Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

246 files changed, 59053 insertions, 0 deletions

diff --git a/contrib/slapd-modules/README b/contrib/slapd-modules/README
new file mode 100644
index 0000000..136f720
--- /dev/null
+++ b/contrib/slapd-modules/README
@@ -0,0 +1,64 @@
+Copyright 2008-2022 The OpenLDAP Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+This directory contains native-API slapd modules (overlays etc):
+
+acl (plugins)
+	Plugins implementing access rules.  Currently one plugin
+	which implements access control based on posixGroup membership.
+
+addpartial (overlay)
+	Treat Add requests as Modify requests if the entry exists.
+
+allop (overlay)
+	Return operational attributes for root DSE even when not
+	requested, since some clients expect this.
+
+autogroup (overlay)
+	Automated updates of group memberships.
+
+cloak (overlay)
+	Hide specific attributes unless explicitly requested
+
+comp_match (plugin)
+	Component Matching rules (RFC 3687).
+
+denyop (overlay)
+	Deny selected operations, returning unwillingToPerform.
+
+dsaschema (plugin)
+	Permit loading DSA-specific schema, including operational attrs.
+
+lastbind (overlay)
+	Record the last successful authentication on an entry.
+
+lastmod (overlay)
+	Track the time of the last write operation to a database.
+
+nops (overlay)
+	Remove null operations, e.g. changing a value to same as before.
+
+nssov (listener overlay)
+	Handle NSS lookup requests through a local Unix Domain socket.
+
+passwd (plugins)
+	Support additional password mechanisms.
+	Currently Kerberos, Netscape MTA-MD5 and RADIUS.
+
+proxyOld (plugin)
+	Proxy Authorization compatibility with obsolete internet-draft.
+
+smbk5pwd (overlay)
+	Make the PasswordModify Extended Operation update Kerberos
+	keys and Samba password hashes as well as userPassword.
+
+trace (overlay)
+	Trace overlay invocation.
+
+usn (overlay)
+	Maintain usnCreated and usnChanged attrs similar to Microsoft AD.
+
+$OpenLDAP$
diff --git a/contrib/slapd-modules/acl/Makefile b/contrib/slapd-modules/acl/Makefile
new file mode 100644
index 0000000..090575d
--- /dev/null
+++ b/contrib/slapd-modules/acl/Makefile
@@ -0,0 +1,50 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = posixgroup.la gssacl.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+posixgroup.la: posixgroup.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+gssacl.la: gssacl.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/acl/README.gssacl b/contrib/slapd-modules/acl/README.gssacl
new file mode 100644
index 0000000..368b178
--- /dev/null
+++ b/contrib/slapd-modules/acl/README.gssacl
@@ -0,0 +1,32 @@
+This directory contains native slapd plugins that implement access rules.
+
+gssacl.c contains a simple example that implements access control
+based on GSS naming extensions attributes.
+
+To use the acl-gssacl plugin, add:
+
+moduleload acl-gssacl.so
+
+to your slapd configuration file.
+It is configured using
+
+access to <what>
+        by dynacl/gss/<attribute>.[.{base,regex,expand}]=<valpat> {<level>|<priv(s)>}
+
+The default is "exact"; in case of "expand", "<valpat>" results from
+the expansion of submatches in the "<what>" portion.  "<level>|<priv(s)>"
+describe the level of privilege this rule can assume.
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+gcc -shared -I../../../include -I../../../servers/slapd -Wall -g \
+	-o acl-gssacl.so gssacl.c
+
+
+---
+Copyright 2011 PADL Software Pty Ltd. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
diff --git a/contrib/slapd-modules/acl/README.posixgroup b/contrib/slapd-modules/acl/README.posixgroup
new file mode 100644
index 0000000..5e0460d
--- /dev/null
+++ b/contrib/slapd-modules/acl/README.posixgroup
@@ -0,0 +1,35 @@
+This directory contains native slapd plugins that implement access rules.
+
+posixgroup.c contains a simple example that implements access control
+based on posixGroup membership, loosely inspired by ITS#3849.  It should
+be made clear that this access control policy does not reflect any
+standard track model of handling access control, and should be 
+essentially viewed as an illustration of the use of the dynamic 
+extension of access control within slapd.
+
+To use the acl-posixgroup plugin, add:
+
+moduleload acl-posixgroup.so
+
+to your slapd configuration file; it requires "nis.schema" to be loaded.
+It is configured using
+
+access to <what>
+	by dynacl/posixGroup[.{exact,expand}]=<dnpat> {<level>|<priv(s)}
+
+The default is "exact"; in case of "expand", "<dnpat>" results from
+the expansion of submatches in the "<what>" portion.  "<level>|<priv(s)>"
+describe the level of privilege this rule can assume.
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+gcc -shared -I../../../include -I../../../servers/slapd -Wall -g \
+	-o acl-posixgroup.so posixgroup.c
+
+---
+Copyright 2005-2022 The OpenLDAP Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
diff --git a/contrib/slapd-modules/acl/gssacl.c b/contrib/slapd-modules/acl/gssacl.c
new file mode 100644
index 0000000..12d3b9a
--- /dev/null
+++ b/contrib/slapd-modules/acl/gssacl.c
@@ -0,0 +1,316 @@
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2011 PADL Software Pty Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include <portable.h>
+
+#include <ac/string.h>
+#include <slap.h>
+#include <lutil.h>
+
+#include <sasl/sasl.h>
+#include <gssapi/gssapi.h>
+#include <gssapi/gssapi_ext.h>
+
+#define ACL_BUF_SIZE 1024
+
+typedef struct gssattr_t {
+	slap_style_t		gssattr_style;
+	struct berval		gssattr_name;		/* asserted name */
+	struct berval		gssattr_value;		/* asserted value */
+} gssattr_t;
+
+static int gssattr_dynacl_destroy( void *priv );
+
+static int
+regex_matches(
+	struct berval	*pat,		/* pattern to expand and match against */
+	char		*str,		/* string to match against pattern */
+	struct berval	*dn_matches,	/* buffer with $N expansion variables from DN */
+	struct berval	*val_matches,	/* buffer with $N expansion variables from val */
+	AclRegexMatches	*matches	/* offsets in buffer for $N expansion variables */
+);
+
+static int
+gssattr_dynacl_parse(
+	const char	*fname,
+	int 		lineno,
+	const char	*opts,
+	slap_style_t	style,
+	const char	*pattern,
+	void		**privp )
+{
+	gssattr_t	*gssattr;
+
+	gssattr = (gssattr_t *)ch_calloc( 1, sizeof( gssattr_t ) );
+
+	if ( opts == NULL || opts[0] == '\0' ) {
+		fprintf( stderr, "%s line %d: GSS ACL: no attribute specified.\n",
+			 fname, lineno );
+		goto cleanup;
+	}
+
+	if ( pattern == NULL || pattern[0] == '\0' ) {
+		fprintf( stderr, "%s line %d: GSS ACL: no attribute value specified.\n",
+			 fname, lineno );
+		goto cleanup;
+	}
+
+	gssattr->gssattr_style = style;
+
+	switch ( gssattr->gssattr_style ) {
+	case ACL_STYLE_BASE:
+	case ACL_STYLE_REGEX:
+	case ACL_STYLE_EXPAND:
+		break;
+	default:
+		fprintf( stderr, "%s line %d: GSS ACL: unsupported style \"%s\".\n",
+			 fname, lineno, style_strings[style] );
+		goto cleanup;
+		break;
+	}
+
+	ber_str2bv( opts,    0, 1, &gssattr->gssattr_name );
+	ber_str2bv( pattern, 0, 1, &gssattr->gssattr_value );
+
+	*privp = (void *)gssattr;
+	return 0;
+
+cleanup:
+	(void)gssattr_dynacl_destroy( (void *)gssattr );
+
+	return 1;
+}
+
+static int
+gssattr_dynacl_unparse(
+	void		*priv,
+	struct berval	*bv )
+{
+	gssattr_t	*gssattr = (gssattr_t *)priv;
+	char		*ptr;
+
+	bv->bv_len = STRLENOF( " dynacl/gss/.expand=" ) +
+		     gssattr->gssattr_name.bv_len +
+		     gssattr->gssattr_value.bv_len;
+	bv->bv_val = ch_malloc( bv->bv_len + 1 );
+
+	ptr = lutil_strcopy( bv->bv_val, " dynacl/gss/" );
+	ptr = lutil_strncopy( ptr, gssattr->gssattr_name.bv_val,
+			      gssattr->gssattr_name.bv_len );
+	switch ( gssattr->gssattr_style ) {
+	case ACL_STYLE_BASE:
+		ptr = lutil_strcopy( ptr, ".exact=" );
+		break;
+	case ACL_STYLE_REGEX:
+		ptr = lutil_strcopy( ptr, ".regex=" );
+		break;
+	case ACL_STYLE_EXPAND:
+		ptr = lutil_strcopy( ptr, ".expand=" );
+		break;
+	default:
+		assert( 0 );
+		break;
+	}
+
+	ptr = lutil_strncopy( ptr, gssattr->gssattr_value.bv_val,
+			      gssattr->gssattr_value.bv_len );
+
+	ptr[ 0 ] = '\0';
+
+	bv->bv_len = ptr - bv->bv_val;
+
+	return 0;
+}
+
+static int
+gssattr_dynacl_mask(
+	void			*priv,
+	Operation		*op,
+	Entry			*target,
+	AttributeDescription	*desc,
+	struct berval		*val,
+	int			nmatch,
+	regmatch_t		*matches,
+	slap_access_t		*grant,
+	slap_access_t		*deny )
+{
+	gssattr_t	*gssattr = (gssattr_t *)priv;
+	sasl_conn_t	*sasl_ctx = op->o_conn->c_sasl_authctx;
+	gss_name_t	gss_name = GSS_C_NO_NAME;
+	OM_uint32	major, minor;
+	int		more = -1;
+	int		authenticated, complete;
+	gss_buffer_desc	attr = GSS_C_EMPTY_BUFFER;
+	int		granted = 0;
+
+	ACL_INVALIDATE( *deny );
+
+	if ( sasl_ctx == NULL ||
+	     sasl_getprop( sasl_ctx, SASL_GSS_PEER_NAME, (const void **)&gss_name) != 0 ||
+	     gss_name == GSS_C_NO_NAME ) {
+		return 0;
+	}
+
+	attr.length = gssattr->gssattr_name.bv_len;
+	attr.value = gssattr->gssattr_name.bv_val;
+
+	while ( more != 0 ) {
+		AclRegexMatches amatches = { 0 };
+		gss_buffer_desc	gss_value = GSS_C_EMPTY_BUFFER;
+		gss_buffer_desc	gss_display_value = GSS_C_EMPTY_BUFFER;
+		struct berval bv_value;
+
+		major = gss_get_name_attribute( &minor, gss_name, &attr,
+						&authenticated, &complete,
+						&gss_value, &gss_display_value, &more );
+		if ( GSS_ERROR( major ) ) {
+			break;
+		} else if ( authenticated == 0 ) {
+			gss_release_buffer( &minor, &gss_value );
+			gss_release_buffer( &minor, &gss_display_value );
+			continue;
+		}
+
+		bv_value.bv_len = gss_value.length;
+		bv_value.bv_val = (char *)gss_value.value;
+
+		if ( !ber_bvccmp( &gssattr->gssattr_value, '*' ) ) {
+			if ( gssattr->gssattr_style != ACL_STYLE_BASE ) {
+				amatches.dn_count = nmatch;
+				AC_MEMCPY( amatches.dn_data, matches, sizeof( amatches.dn_data ) );
+			}
+
+			switch ( gssattr->gssattr_style ) {
+			case ACL_STYLE_REGEX:
+				/* XXX assumes value NUL terminated */
+				granted = regex_matches( &gssattr->gssattr_value, bv_value.bv_val,
+							  &target->e_nname, val, &amatches );
+				break;
+			case ACL_STYLE_EXPAND: {
+				struct berval bv;
+				char buf[ACL_BUF_SIZE];
+
+				bv.bv_len = sizeof( buf ) - 1;
+				bv.bv_val = buf;
+
+				granted = ( acl_string_expand( &bv, &gssattr->gssattr_value,
+							       &target->e_nname, val,
+							       &amatches ) == 0 ) &&
+					  ( ber_bvstrcmp( &bv, &bv_value) == 0 );
+				break;
+			}
+			case ACL_STYLE_BASE:
+				granted = ( ber_bvstrcmp( &gssattr->gssattr_value, &bv_value ) == 0 );
+				break;
+			default:
+				assert(0);
+				break;
+			}
+		} else {
+			granted = 1;
+		}
+
+		gss_release_buffer( &minor, &gss_value );
+		gss_release_buffer( &minor, &gss_display_value );
+
+		if ( granted ) {
+			break;
+		}
+	}
+
+	if ( granted ) {
+		ACL_LVL_ASSIGN_WRITE( *grant );
+	}
+
+	return 0;
+}
+
+static int
+gssattr_dynacl_destroy(
+	void		*priv )
+{
+	gssattr_t		*gssattr = (gssattr_t *)priv;
+
+	if ( gssattr != NULL ) {
+		if ( !BER_BVISNULL( &gssattr->gssattr_name ) ) {
+			ber_memfree( gssattr->gssattr_name.bv_val );
+		}
+		if ( !BER_BVISNULL( &gssattr->gssattr_value ) ) {
+			ber_memfree( gssattr->gssattr_value.bv_val );
+		}
+		ch_free( gssattr );
+	}
+
+	return 0;
+}
+
+static struct slap_dynacl_t gssattr_dynacl = {
+	"gss",
+	gssattr_dynacl_parse,
+	gssattr_dynacl_unparse,
+	gssattr_dynacl_mask,
+	gssattr_dynacl_destroy
+};
+
+int
+init_module( int argc, char *argv[] )
+{
+	return slap_dynacl_register( &gssattr_dynacl );
+}
+
+
+static int
+regex_matches(
+	struct berval	*pat,		/* pattern to expand and match against */
+	char		*str,		/* string to match against pattern */
+	struct berval	*dn_matches,	/* buffer with $N expansion variables from DN */
+	struct berval	*val_matches,	/* buffer with $N expansion variables from val */
+	AclRegexMatches	*matches	/* offsets in buffer for $N expansion variables */
+)
+{
+	regex_t re;
+	char newbuf[ACL_BUF_SIZE];
+	struct berval bv;
+	int	rc;
+
+	bv.bv_len = sizeof( newbuf ) - 1;
+	bv.bv_val = newbuf;
+
+	if (str == NULL) {
+		str = "";
+	};
+
+	acl_string_expand( &bv, pat, dn_matches, val_matches, matches );
+	rc = regcomp( &re, newbuf, REG_EXTENDED|REG_ICASE );
+	if ( rc ) {
+		char error[ACL_BUF_SIZE];
+		regerror( rc, &re, error, sizeof( error ) );
+
+		Debug( LDAP_DEBUG_TRACE,
+		    "compile( \"%s\", \"%s\") failed %s\n",
+			pat->bv_val, str, error );
+		return( 0 );
+	}
+
+	rc = regexec( &re, str, 0, NULL, 0 );
+	regfree( &re );
+
+	Debug( LDAP_DEBUG_TRACE,
+	    "=> regex_matches: string:	 %s\n", str );
+	Debug( LDAP_DEBUG_TRACE,
+	    "=> regex_matches: rc: %d %s\n",
+		rc, !rc ? "matches" : "no matches" );
+	return( !rc );
+}
+
diff --git a/contrib/slapd-modules/acl/posixgroup.c b/contrib/slapd-modules/acl/posixgroup.c
new file mode 100644
index 0000000..9a9a5a8
--- /dev/null
+++ b/contrib/slapd-modules/acl/posixgroup.c
@@ -0,0 +1,329 @@
+/* posixgroup.c */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include <portable.h>
+
+#include <ac/string.h>
+#include <slap.h>
+#include <lutil.h>
+
+/* Need dynacl... */
+
+#ifdef SLAP_DYNACL
+
+typedef struct pg_t {
+	slap_style_t		pg_style;
+	struct berval		pg_pat;
+} pg_t;
+
+static ObjectClass		*pg_posixGroup;
+static AttributeDescription	*pg_memberUid;
+static ObjectClass		*pg_posixAccount;
+static AttributeDescription	*pg_uidNumber;
+
+static int pg_dynacl_destroy( void *priv );
+
+static int
+pg_dynacl_parse(
+	const char	*fname,
+	int 		lineno,
+	const char	*opts,
+	slap_style_t	style,
+	const char	*pattern,
+	void		**privp )
+{
+	pg_t		*pg;
+	int		rc;
+	const char	*text = NULL;
+	struct berval	pat;
+
+	ber_str2bv( pattern, 0, 0, &pat );
+
+	pg = ch_calloc( 1, sizeof( pg_t ) );
+
+	pg->pg_style = style;
+
+	switch ( pg->pg_style ) {
+	case ACL_STYLE_BASE:
+		rc = dnNormalize( 0, NULL, NULL, &pat, &pg->pg_pat, NULL );
+		if ( rc != LDAP_SUCCESS ) {
+			fprintf( stderr, "%s line %d: posixGroup ACL: "
+				"unable to normalize DN \"%s\".\n",
+				fname, lineno, pattern );
+			goto cleanup;
+		}
+		break;
+
+	case ACL_STYLE_EXPAND:
+		ber_dupbv( &pg->pg_pat, &pat );
+		break;
+
+	default:
+		fprintf( stderr, "%s line %d: posixGroup ACL: "
+			"unsupported style \"%s\".\n",
+			fname, lineno, style_strings[ pg->pg_style ] );
+		goto cleanup;
+	}
+
+	/* TODO: use opts to allow the use of different
+	 * group objects and member attributes */
+	if ( pg_posixGroup == NULL ) {
+		pg_posixGroup = oc_find( "posixGroup" );
+		if ( pg_posixGroup == NULL ) {
+			fprintf( stderr, "%s line %d: posixGroup ACL: "
+				"unable to lookup \"posixGroup\" "
+				"objectClass.\n",
+				fname, lineno );
+			goto cleanup;
+		}
+
+		pg_posixAccount = oc_find( "posixAccount" );
+		if ( pg_posixGroup == NULL ) {
+			fprintf( stderr, "%s line %d: posixGroup ACL: "
+				"unable to lookup \"posixAccount\" "
+				"objectClass.\n",
+				fname, lineno );
+			goto cleanup;
+		}
+
+		rc = slap_str2ad( "memberUid", &pg_memberUid, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			fprintf( stderr, "%s line %d: posixGroup ACL: "
+				"unable to lookup \"memberUid\" "
+				"attributeDescription (%d: %s).\n",
+				fname, lineno, rc, text );
+			goto cleanup;
+		}
+
+		rc = slap_str2ad( "uidNumber", &pg_uidNumber, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			fprintf( stderr, "%s line %d: posixGroup ACL: "
+				"unable to lookup \"uidNumber\" "
+				"attributeDescription (%d: %s).\n",
+				fname, lineno, rc, text );
+			goto cleanup;
+		}
+	}
+
+	*privp = (void *)pg;
+	return 0;
+
+cleanup:
+	(void)pg_dynacl_destroy( (void *)pg );
+
+	return 1;
+}
+
+static int
+pg_dynacl_unparse(
+	void		*priv,
+	struct berval	*bv )
+{
+	pg_t		*pg = (pg_t *)priv;
+	char		*ptr;
+
+	bv->bv_len = STRLENOF( " dynacl/posixGroup.expand=" ) + pg->pg_pat.bv_len;
+	bv->bv_val = ch_malloc( bv->bv_len + 1 );
+
+	ptr = lutil_strcopy( bv->bv_val, " dynacl/posixGroup" );
+
+	switch ( pg->pg_style ) {
+	case ACL_STYLE_BASE:
+		ptr = lutil_strcopy( ptr, ".exact=" );
+		break;
+
+	case ACL_STYLE_EXPAND:
+		ptr = lutil_strcopy( ptr, ".expand=" );
+		break;
+
+	default:
+		assert( 0 );
+	}
+
+	ptr = lutil_strncopy( ptr, pg->pg_pat.bv_val, pg->pg_pat.bv_len );
+	ptr[ 0 ] = '\0';
+
+	bv->bv_len = ptr - bv->bv_val;
+
+	return 0;
+}
+
+static int
+pg_dynacl_mask(
+	void			*priv,
+	Operation		*op,
+	Entry			*target,
+	AttributeDescription	*desc,
+	struct berval		*val,
+	int			nmatch,
+	regmatch_t		*matches,
+	slap_access_t		*grant,
+	slap_access_t		*deny )
+{
+	pg_t		*pg = (pg_t *)priv;
+	Entry		*group = NULL,
+			*user = NULL;
+	int		rc;
+	Backend		*be = op->o_bd,
+			*group_be = NULL,
+			*user_be = NULL;
+	struct berval	group_ndn;
+
+	ACL_INVALIDATE( *deny );
+
+	/* get user */
+	if ( target && dn_match( &target->e_nname, &op->o_ndn ) ) {
+		user = target;
+		rc = LDAP_SUCCESS;
+
+	} else {
+		user_be = op->o_bd = select_backend( &op->o_ndn, 0 );
+		if ( op->o_bd == NULL ) {
+			op->o_bd = be;
+			return 0;
+		}
+		rc = be_entry_get_rw( op, &op->o_ndn, pg_posixAccount, pg_uidNumber, 0, &user );
+	}
+
+	if ( rc != LDAP_SUCCESS || user == NULL ) {
+		op->o_bd = be;
+		return 0;
+	}
+
+	/* get target */
+	if ( pg->pg_style == ACL_STYLE_EXPAND ) {
+		char		buf[ 1024 ];
+		struct berval	bv;
+		AclRegexMatches amatches = { 0 };
+
+		amatches.dn_count = nmatch;
+		AC_MEMCPY( amatches.dn_data, matches, sizeof( amatches.dn_data ) );
+
+		bv.bv_len = sizeof( buf ) - 1;
+		bv.bv_val = buf;
+
+		if ( acl_string_expand( &bv, &pg->pg_pat,
+				&target->e_nname,
+				NULL, &amatches ) )
+		{
+			goto cleanup;
+		}
+
+		if ( dnNormalize( 0, NULL, NULL, &bv, &group_ndn,
+				op->o_tmpmemctx ) != LDAP_SUCCESS )
+		{
+			/* did not expand to a valid dn */
+			goto cleanup;
+		}
+		
+	} else {
+		group_ndn = pg->pg_pat;
+	}
+
+	if ( target && dn_match( &target->e_nname, &group_ndn ) ) {
+		group = target;
+		rc = LDAP_SUCCESS;
+
+	} else {
+		group_be = op->o_bd = select_backend( &group_ndn, 0 );
+		if ( op->o_bd == NULL ) {
+			goto cleanup;
+		}
+		rc = be_entry_get_rw( op, &group_ndn, pg_posixGroup, pg_memberUid, 0, &group );
+	}
+
+	if ( group_ndn.bv_val != pg->pg_pat.bv_val ) {
+		op->o_tmpfree( group_ndn.bv_val, op->o_tmpmemctx );
+	}
+
+	if ( rc == LDAP_SUCCESS && group != NULL ) {
+		Attribute	*a_uid,
+				*a_member;
+
+		a_uid = attr_find( user->e_attrs, pg_uidNumber );
+		if ( !a_uid || !BER_BVISNULL( &a_uid->a_nvals[ 1 ] ) ) {
+			rc = LDAP_NO_SUCH_ATTRIBUTE;
+
+		} else {
+			a_member = attr_find( group->e_attrs, pg_memberUid );
+			if ( !a_member ) {
+				rc = LDAP_NO_SUCH_ATTRIBUTE;
+
+			} else {
+				rc = value_find_ex( pg_memberUid,
+					SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+					SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+					a_member->a_nvals, &a_uid->a_nvals[ 0 ],
+					op->o_tmpmemctx );
+			}
+		}
+
+	} else {
+		rc = LDAP_NO_SUCH_OBJECT;
+	}
+
+
+	if ( rc == LDAP_SUCCESS ) {
+		ACL_LVL_ASSIGN_WRITE( *grant );
+	}
+
+cleanup:;
+	if ( group != NULL && group != target ) {
+		op->o_bd = group_be;
+		be_entry_release_r( op, group );
+		op->o_bd = be;
+	}
+
+	if ( user != NULL && user != target ) {
+		op->o_bd = user_be;
+		be_entry_release_r( op, user );
+		op->o_bd = be;
+	}
+
+	return 0;
+}
+
+static int
+pg_dynacl_destroy(
+	void		*priv )
+{
+	pg_t		*pg = (pg_t *)priv;
+
+	if ( pg != NULL ) {
+		if ( !BER_BVISNULL( &pg->pg_pat ) ) {
+			ber_memfree( pg->pg_pat.bv_val );
+		}
+		ch_free( pg );
+	}
+
+	return 0;
+}
+
+static struct slap_dynacl_t pg_dynacl = {
+	"posixGroup",
+	pg_dynacl_parse,
+	pg_dynacl_unparse,
+	pg_dynacl_mask,
+	pg_dynacl_destroy
+};
+
+int
+init_module( int argc, char *argv[] )
+{
+	return slap_dynacl_register( &pg_dynacl );
+}
+
+#endif /* SLAP_DYNACL */
diff --git a/contrib/slapd-modules/addpartial/Makefile b/contrib/slapd-modules/addpartial/Makefile
new file mode 100644
index 0000000..ecb7cd0
--- /dev/null
+++ b/contrib/slapd-modules/addpartial/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = addpartial.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+addpartial.la: addpartial-overlay.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/addpartial/README b/contrib/slapd-modules/addpartial/README
new file mode 100644
index 0000000..968cdd8
--- /dev/null
+++ b/contrib/slapd-modules/addpartial/README
@@ -0,0 +1,72 @@
+addpartial Overlay README
+
+DESCRIPTION
+    This package contains an OpenLDAP overlay called "addpartial" that 
+    intercepts add requests, determines if the entry exists, determines what 
+    attributes, if any, have changed, and modifies those attributes.  If the
+    entry does not exist, the add request falls through and proceeds normally.
+    If the entry exists but no changes have been detected, the client receives
+    LDAP_SUCCESS (I suppose it is debatable what to do in this case, but this is
+    the most clean for my use.  The LDAP_SUCCESS lets me know that the entry I
+    sent slapd == the entry already in my slapd DB.  Perhaps this behavior
+    should be configurable in the future).
+
+    When a change is found, the addpartial overlay will replace all values for
+    the attribute (if an attribute does not exist in the new entry but exists
+    in the entry in the slapd DB, a replace will be done with an empty list of
+    values).
+
+    Once a modify takes place, the syncprov overlay will properly process the
+    change, provided that addpartial is the first overlay to run.  Please see
+    the CAVEATS for more specifics about this.
+
+    The addpartial overlay makes it easy to replicate full entries to a slapd 
+    instance without worrying about the differences between entries or even if
+    the entry exists.  Using ldapadd to add entries, the addpartial overlay can
+    compare about 500 records per second.  The intent of the addpartial overlay
+    is to make it easy to replicate records from a source that is not an LDAP
+    instance, such as a database.  The overlay is also useful in places where it
+    is easier to create full entries rather than comparing an entry with an
+    entry that must be retrieved (with ldapsearch or similar) from an existing
+    slapd DB to find changes. 
+
+    The addpartial overlay has been used in production since August 2004 and has
+    processed millions of records without incident.
+
+BUILDING
+    A Makefile is included, please set your LDAP_SRC directory properly.
+
+INSTALLATION
+    After compiling the addpartial overlay, add the following to your 
+    slapd.conf:
+
+    ### slapd.conf
+    ...
+    moduleload addpartial.so
+    ...
+    # after database directive...
+    # this overlay should be the last overlay in the config file to ensure that
+    # it properly intercepts the add request
+    overlay addpartial
+    ...
+    ### end slapd.conf
+
+CAVEATS
+    - In order to ensure that addpartial does what it needs to do, it should be
+      the last overlay configured so it will run before the other overlays.
+      This is especially important if you are using syncrepl, as the modify that
+      addpartial does will muck with the locking that takes place in the
+      syncprov overlay.
+
+---
+Copyright 2004-2022 The OpenLDAP Foundation.
+Portions Copyright (C) Virginia Tech, David Hawes.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+http://www.OpenLDAP.org/license.html.
diff --git a/contrib/slapd-modules/addpartial/addpartial-overlay.c b/contrib/slapd-modules/addpartial/addpartial-overlay.c
new file mode 100644
index 0000000..b1d637b
--- /dev/null
+++ b/contrib/slapd-modules/addpartial/addpartial-overlay.c
@@ -0,0 +1,349 @@
+/* addpartial-overlay.c */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2022 The OpenLDAP Foundation.
+ * Portions Copyright (C) 2004 Virginia Tech, David Hawes.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * http://www.OpenLDAP.org/license.html.
+ */
+/* ACKNOLEDGEDMENTS:
+ * This work was initially developed by David Hawes of Virginia Tech
+ * for inclusion in OpenLDAP Software.
+ */
+/* addpartial-overlay
+ *
+ * This is an OpenLDAP overlay that intercepts ADD requests, determines if a
+ * change has actually taken place for that record, and then performs a modify
+ * request for those values that have changed (modified, added, deleted).  If
+ * the record has not changed in any way, it is ignored.  If the record does not
+ * exist, the record falls through to the normal add mechanism.  This overlay is
+ * useful for replicating from sources that are not LDAPs where it is easier to
+ * build entire records than to determine the changes (i.e. a database). 
+ */
+
+#include "portable.h" 
+#include "slap.h"
+
+static int collect_error_msg_cb( Operation *op, SlapReply *rs);
+
+static slap_overinst addpartial;
+
+/**
+ *  The meat of the overlay.  Search for the record, determine changes, take
+ *  action or fall through.
+ */
+static int addpartial_add( Operation *op, SlapReply *rs)
+{
+    Operation nop = *op;
+    Entry *toAdd = NULL;
+    Entry *found = NULL;
+    slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+    int rc;
+
+    toAdd = op->oq_add.rs_e;
+
+    Debug(LDAP_DEBUG_TRACE, "%s: toAdd->e_nname.bv_val: %s\n",
+          addpartial.on_bi.bi_type, toAdd->e_nname.bv_val );
+
+    /* if the user doesn't have access, fall through to the normal ADD */
+    if(!access_allowed(op, toAdd, slap_schema.si_ad_entry,
+                       NULL, ACL_WRITE, NULL))
+    {
+        return SLAP_CB_CONTINUE;
+    }
+
+    rc = overlay_entry_get_ov(&nop, &nop.o_req_ndn, NULL, NULL, 0, &found, on);
+
+    if(rc != LDAP_SUCCESS)
+    {
+        Debug(LDAP_DEBUG_TRACE,
+              "%s: no entry found, falling through to normal add\n",
+              addpartial.on_bi.bi_type );
+        return SLAP_CB_CONTINUE;
+    }
+    else
+    { 
+        Debug(LDAP_DEBUG_TRACE, "%s: found the dn\n", addpartial.on_bi.bi_type );
+
+        if(found)
+        {
+            Attribute *attr = NULL;
+            Attribute *at = NULL;
+            int ret;
+            Modifications *mods = NULL;
+            Modifications **modtail = &mods;
+            Modifications *mod = NULL;
+
+            Debug(LDAP_DEBUG_TRACE, "%s: have an entry!\n",
+                  addpartial.on_bi.bi_type );
+
+           /* determine if the changes are in the found entry */ 
+            for(attr = toAdd->e_attrs; attr; attr = attr->a_next)
+            {
+                if(attr->a_desc->ad_type->sat_atype.at_usage != 0) continue;
+
+                at = attr_find(found->e_attrs, attr->a_desc);
+                if(!at)
+                {
+                    Debug(LDAP_DEBUG_TRACE, "%s: Attribute %s not found!\n",
+                          addpartial.on_bi.bi_type,
+                          attr->a_desc->ad_cname.bv_val );
+                    mod = (Modifications *) ch_malloc(sizeof(
+                                                            Modifications));
+                    mod->sml_flags = 0;
+                    mod->sml_op = LDAP_MOD_REPLACE | LDAP_MOD_BVALUES;
+                    mod->sml_op &= LDAP_MOD_OP;
+                    mod->sml_next = NULL;
+                    mod->sml_desc = attr->a_desc;
+                    mod->sml_type = attr->a_desc->ad_cname;
+                    mod->sml_values = attr->a_vals;
+                    mod->sml_nvalues = attr->a_nvals;
+                    mod->sml_numvals = attr->a_numvals;
+                    *modtail = mod;
+                    modtail = &mod->sml_next;
+                }
+                else
+                {
+                    MatchingRule *mr = attr->a_desc->ad_type->sat_equality;
+                    struct berval *bv;
+                    const char *text;
+                    int acount , bcount;
+                    Debug(LDAP_DEBUG_TRACE, "%s: Attribute %s found\n",
+                          addpartial.on_bi.bi_type,
+                          attr->a_desc->ad_cname.bv_val );
+
+                    for(bv = attr->a_vals, acount = 0; bv->bv_val != NULL; 
+                        bv++, acount++)
+                    {
+                        /* count num values for attr */
+                    }
+                    for(bv = at->a_vals, bcount = 0; bv->bv_val != NULL; 
+                        bv++, bcount++)
+                    {
+                        /* count num values for attr */
+                    }
+                    if(acount != bcount)
+                    {
+                        Debug(LDAP_DEBUG_TRACE, "%s: acount != bcount, %s\n",
+                              addpartial.on_bi.bi_type,
+                              "replace all" );
+                        mod = (Modifications *) ch_malloc(sizeof(
+                                                                Modifications));
+                        mod->sml_flags = 0;
+                        mod->sml_op = LDAP_MOD_REPLACE | LDAP_MOD_BVALUES;
+                        mod->sml_op &= LDAP_MOD_OP;
+                        mod->sml_next = NULL;
+                        mod->sml_desc = attr->a_desc;
+                        mod->sml_type = attr->a_desc->ad_cname;
+                        mod->sml_values = attr->a_vals;
+                        mod->sml_nvalues = attr->a_nvals;
+                        mod->sml_numvals = attr->a_numvals;
+                        *modtail = mod;
+                        modtail = &mod->sml_next;
+                        continue;
+                    }
+                    
+                    for(bv = attr->a_vals; bv->bv_val != NULL; bv++)
+                    {
+                        struct berval *v;
+                        ret = -1;
+                        
+                        for(v = at->a_vals; v->bv_val != NULL; v++)
+                        {
+                            int r;
+                            if(mr && ((r = value_match(&ret, attr->a_desc, mr,
+                                           SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
+                                           bv, v, &text)) == 0))
+                            {
+                                if(ret == 0)
+                                    break;
+                            }
+                            else
+                            {
+                                Debug(LDAP_DEBUG_TRACE,
+                                      "%s: \tvalue DNE, r: %d \n",
+                                      addpartial.on_bi.bi_type,
+                                      r );
+                                ret = strcmp(bv->bv_val, v->bv_val);
+                                if(ret == 0)
+                                    break;
+                            }
+                        }
+
+                        if(ret == 0)
+                        {
+                            Debug(LDAP_DEBUG_TRACE,
+                                  "%s: \tvalue %s exists, ret: %d\n",
+                                  addpartial.on_bi.bi_type, bv->bv_val, ret);
+                        }
+                        else
+                        {
+                            Debug(LDAP_DEBUG_TRACE,
+                                  "%s: \tvalue %s DNE, ret: %d\n",
+                                  addpartial.on_bi.bi_type, bv->bv_val, ret);
+                            mod = (Modifications *) ch_malloc(sizeof(
+                                                                Modifications));
+                            mod->sml_flags = 0;
+                            mod->sml_op = LDAP_MOD_REPLACE | LDAP_MOD_BVALUES;
+                            mod->sml_op &= LDAP_MOD_OP;
+                            mod->sml_next = NULL;
+                            mod->sml_desc = attr->a_desc;
+                            mod->sml_type = attr->a_desc->ad_cname;
+                            mod->sml_values = attr->a_vals;
+                            mod->sml_nvalues = attr->a_nvals;
+                            mod->sml_numvals = attr->a_numvals;
+                            *modtail = mod;
+                            modtail = &mod->sml_next;
+                            break;
+                        }
+                    }
+                }
+            }
+
+            /* determine if any attributes were deleted */
+            for(attr = found->e_attrs; attr; attr = attr->a_next)
+            {
+                if(attr->a_desc->ad_type->sat_atype.at_usage != 0) continue;
+
+                at = NULL;
+                at = attr_find(toAdd->e_attrs, attr->a_desc);
+                if(!at)
+                {
+                    Debug(LDAP_DEBUG_TRACE,
+                          "%s: Attribute %s not found in new entry!!!\n",
+                          addpartial.on_bi.bi_type,
+                          attr->a_desc->ad_cname.bv_val );
+                    mod = (Modifications *) ch_malloc(sizeof(
+                                                        Modifications));
+                    mod->sml_flags = 0;
+                    mod->sml_op = LDAP_MOD_REPLACE;
+                    mod->sml_next = NULL;
+                    mod->sml_desc = attr->a_desc;
+                    mod->sml_type = attr->a_desc->ad_cname;
+                    mod->sml_values = NULL;
+                    mod->sml_nvalues = NULL;
+                    mod->sml_numvals = 0;
+                    *modtail = mod;
+                    modtail = &mod->sml_next;
+                }
+                else
+                {
+                    Debug(LDAP_DEBUG_TRACE,
+                          "%s: Attribute %s found in new entry\n",
+                          addpartial.on_bi.bi_type,
+                          at->a_desc->ad_cname.bv_val );
+                }
+            }
+
+            overlay_entry_release_ov(&nop, found, 0, on);
+
+            if(mods)
+            {
+                Modifications *m = NULL;
+                Modifications *toDel;
+                int modcount;
+                slap_callback nullcb = { NULL, collect_error_msg_cb, 
+                                         NULL, NULL };
+
+                Debug(LDAP_DEBUG_TRACE, "%s: mods to do...\n",
+                      addpartial.on_bi.bi_type );
+
+                nop.o_tag = LDAP_REQ_MODIFY;
+                nop.orm_modlist = mods;
+                nop.orm_no_opattrs = 0;
+                nop.o_callback = &nullcb;
+                nop.o_bd->bd_info = (BackendInfo *) on->on_info;
+
+                for(m = mods, modcount = 0; m; m = m->sml_next, 
+                    modcount++)
+                {
+                    /* count number of mods */
+                }
+
+                Debug(LDAP_DEBUG_TRACE, "%s: number of mods: %d\n",
+                      addpartial.on_bi.bi_type, modcount );
+
+                if(nop.o_bd->be_modify)
+                {
+                    SlapReply nrs = { REP_RESULT };
+                    rc = (nop.o_bd->be_modify)(&nop, &nrs);
+                }
+
+                if(rc == LDAP_SUCCESS)
+                {
+                    Debug(LDAP_DEBUG_TRACE,
+                          "%s: modify successful\n",
+                          addpartial.on_bi.bi_type );
+                }
+                else
+                {
+                    Debug(LDAP_DEBUG_TRACE, "%s: modify unsuccessful: %d\n",
+                          addpartial.on_bi.bi_type, rc );
+                    rs->sr_err = rc;
+                    if(nullcb.sc_private)
+                    {
+                        rs->sr_text = nullcb.sc_private;
+                    }
+                }
+
+                Debug(LDAP_DEBUG_TRACE, "%s: freeing mods...\n",
+                      addpartial.on_bi.bi_type );
+
+                for(toDel = mods; toDel; toDel = mods)
+                {
+                    mods = mods->sml_next;
+                    ch_free(toDel);
+                }
+            }
+            else
+            {
+                Debug(LDAP_DEBUG_TRACE, "%s: no mods to process\n",
+                      addpartial.on_bi.bi_type );
+            }
+        }
+        else
+        {
+            Debug(LDAP_DEBUG_TRACE, "%s: no entry!\n",
+                  addpartial.on_bi.bi_type );
+        }
+
+        op->o_callback = NULL;
+        send_ldap_result( op, rs );
+        ch_free((void *)rs->sr_text);
+        rs->sr_text = NULL;
+
+        return LDAP_SUCCESS;
+    }
+}
+
+static int collect_error_msg_cb( Operation *op, SlapReply *rs)
+{
+    if(rs->sr_text)
+    {
+        op->o_callback->sc_private = (void *) ch_strdup(rs->sr_text);
+    }
+
+    return LDAP_SUCCESS;
+}
+
+int addpartial_init() 
+{
+    addpartial.on_bi.bi_type = "addpartial";
+	addpartial.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+    addpartial.on_bi.bi_op_add = addpartial_add;
+
+    return (overlay_register(&addpartial));
+}
+
+int init_module(int argc, char *argv[]) 
+{
+    return addpartial_init();
+}
diff --git a/contrib/slapd-modules/adremap/Makefile b/contrib/slapd-modules/adremap/Makefile
new file mode 100644
index 0000000..b008eab
--- /dev/null
+++ b/contrib/slapd-modules/adremap/Makefile
@@ -0,0 +1,68 @@
+# $OpenLDAP$
+# Copyright 2015 Howard Chu <hyc@symas.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_ADREMAP=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = adremap.la
+MANPAGES = slapo-adremap.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+adremap.la: adremap.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/adremap/adremap.c b/contrib/slapd-modules/adremap/adremap.c
new file mode 100644
index 0000000..5a7b8f1
--- /dev/null
+++ b/contrib/slapd-modules/adremap/adremap.c
@@ -0,0 +1,652 @@
+/* adremap.c - Case-folding and DN-value remapping for AD proxies */
+/* $OpenLDAP$ */
+/*
+ * Copyright 2015 Howard Chu <hyc@symas.com>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+/*
+ * This file implements an overlay that performs two remapping functions
+ * to allow older POSIX clients to use Microsoft AD:
+ * 1: downcase the values of a configurable list of attributes
+ * 2: dereference some DN-valued attributes and convert to their simple names
+ *	   e.g. generate memberUid based on member
+ */
+
+#ifdef SLAPD_OVER_ADREMAP
+
+#include <ldap.h>
+#include "lutil.h"
+#include "slap.h"
+#include <ac/errno.h>
+#include <ac/time.h>
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include "slap-config.h"
+
+typedef struct adremap_dnv {
+	struct adremap_dnv *ad_next;
+	AttributeDescription *ad_dnattr;	/* DN-valued attr to deref */
+	AttributeDescription *ad_deref;		/* target attr's value to retrieve */
+	AttributeDescription *ad_newattr;	/* New attr to collect new values */
+	ObjectClass *ad_group;		/* group objectclass on target */
+	ObjectClass *ad_mapgrp;		/* group objectclass to map */
+	ObjectClass *ad_refgrp;		/* objectclass of target DN */
+	struct berval ad_refbase;	/* base DN of target entries */
+} adremap_dnv;
+/* example: member uid memberUid */
+
+typedef struct adremap_case {
+	struct adremap_case *ac_next;
+	AttributeDescription *ac_attr;
+} adremap_case;
+
+/* Per-instance configuration information */
+typedef struct adremap_info {
+	adremap_case *ai_case;	/* attrs to downcase */
+	adremap_dnv *ai_dnv;	/* DN attrs to remap */
+} adremap_info;
+
+enum {
+	ADREMAP_CASE = 1,
+	ADREMAP_DNV
+};
+
+static ConfigDriver adremap_cf_case;
+static ConfigDriver adremap_cf_dnv;
+
+/* configuration attribute and objectclass */
+static ConfigTable adremapcfg[] = {
+	{ "adremap-downcase", "attrs", 2, 0, 0,
+	  ARG_MAGIC|ADREMAP_CASE, adremap_cf_case,
+	  "( OLcfgCtAt:6.1 "
+	  "NAME 'olcADremapDowncase' "
+	  "DESC 'List of attributes to casefold to lower case' "
+	  "EQUALITY caseIgnoreMatch "
+	  "SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ "adremap-dnmap", "dnattr targetattr newattr remoteOC localOC targetOC baseDN", 8, 8, 0,
+	  ARG_MAGIC|ADREMAP_DNV, adremap_cf_dnv,
+	  "( OLcfgCtAt:6.2 "
+	  "NAME 'olcADremapDNmap' "
+	  "DESC 'DN attr to map, attr from target to use, attr to generate, objectclass of remote"
+	   " group, objectclass mapped group, objectclass of target entry, base DN of target entry' "
+	  "EQUALITY caseIgnoreMatch "
+	  "SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs adremapocs[] = {
+	{ "( OLcfgCtOc:6.1 "
+	  "NAME 'olcADremapConfig' "
+	  "DESC 'AD remap configuration' "
+	  "SUP olcOverlayConfig "
+	  "MAY ( olcADremapDowncase $ olcADremapDNmap ) )",
+	  Cft_Overlay, adremapcfg, NULL, NULL },
+	{ NULL, 0, NULL }
+};
+
+static int
+adremap_cf_case(ConfigArgs *c)
+{
+	BackendDB *be = (BackendDB *)c->be;
+	slap_overinst *on = (slap_overinst *)c->bi;
+	adremap_info *ai = on->on_bi.bi_private;
+	adremap_case *ac, **a2;
+	int rc = ARG_BAD_CONF;
+
+	switch(c->op) {
+	case SLAP_CONFIG_EMIT:
+		for (ac = ai->ai_case; ac; ac=ac->ac_next) {
+			rc = value_add_one(&c->rvalue_vals, &ac->ac_attr->ad_cname);
+			if (rc) break;
+		}
+		break;
+	case LDAP_MOD_DELETE:
+		if (c->valx < 0) {
+			for (ac = ai->ai_case; ac; ac=ai->ai_case) {
+				ai->ai_case = ac->ac_next;
+				ch_free(ac);
+			}
+		} else {
+			int i;
+			for (i=0, a2 = &ai->ai_case; i<c->valx; i++, a2 = &(*a2)->ac_next);
+			ac = *a2;
+			*a2 = ac->ac_next;
+			ch_free(ac);
+		}
+		rc = 0;
+		break;
+	default: {
+		const char *text;
+		adremap_case ad;
+		ad.ac_attr = NULL;
+		rc = slap_str2ad(c->argv[1], &ad.ac_attr, &text);
+		if (rc) break;
+		for (a2 = &ai->ai_case; *a2; a2 = &(*a2)->ac_next);
+		ac = ch_malloc(sizeof(adremap_case));
+		ac->ac_next = NULL;
+		ac->ac_attr = ad.ac_attr;
+		*a2 = ac;
+		break;
+		}
+	}
+	return rc;
+}
+
+static int
+adremap_cf_dnv(ConfigArgs *c)
+{
+	BackendDB *be = (BackendDB *)c->be;
+	slap_overinst *on = (slap_overinst *)c->bi;
+	adremap_info *ai = on->on_bi.bi_private;
+	adremap_dnv *ad, **a2;
+	int rc = ARG_BAD_CONF;
+
+	switch(c->op) {
+	case SLAP_CONFIG_EMIT:
+		for (ad = ai->ai_dnv; ad; ad=ad->ad_next) {
+			char *ptr;
+			struct berval bv;
+			bv.bv_len = ad->ad_dnattr->ad_cname.bv_len + ad->ad_deref->ad_cname.bv_len + ad->ad_newattr->ad_cname.bv_len + 2;
+			bv.bv_len += ad->ad_group->soc_cname.bv_len + ad->ad_mapgrp->soc_cname.bv_len + ad->ad_refgrp->soc_cname.bv_len + 3;
+			bv.bv_len += ad->ad_refbase.bv_len + 3;
+			bv.bv_val = ch_malloc(bv.bv_len + 1);
+			ptr = lutil_strcopy(bv.bv_val, ad->ad_dnattr->ad_cname.bv_val);
+			*ptr++ = ' ';
+			ptr = lutil_strcopy(ptr, ad->ad_deref->ad_cname.bv_val);
+			*ptr++ = ' ';
+			ptr = lutil_strcopy(ptr, ad->ad_newattr->ad_cname.bv_val);
+			*ptr++ = ' ';
+			ptr = lutil_strcopy(ptr, ad->ad_group->soc_cname.bv_val);
+			*ptr++ = ' ';
+			ptr = lutil_strcopy(ptr, ad->ad_mapgrp->soc_cname.bv_val);
+			*ptr++ = ' ';
+			ptr = lutil_strcopy(ptr, ad->ad_refgrp->soc_cname.bv_val);
+			*ptr++ = ' ';
+			*ptr++ = '"';
+			ptr = lutil_strcopy(ptr, ad->ad_refbase.bv_val);
+			*ptr++ = '"';
+			*ptr = '\0';
+			ber_bvarray_add(&c->rvalue_vals, &bv);
+		}
+		if (ai->ai_dnv) rc = 0;
+		break;
+	case LDAP_MOD_DELETE:
+		if (c->valx < 0) {
+			for (ad = ai->ai_dnv; ad; ad=ai->ai_dnv) {
+				ai->ai_dnv = ad->ad_next;
+				ch_free(ad);
+			}
+		} else {
+			int i;
+			for (i=0, a2 = &ai->ai_dnv; i<c->valx; i++, a2 = &(*a2)->ad_next);
+			ad = *a2;
+			*a2 = ad->ad_next;
+			ch_free(ad);
+		}
+		rc = 0;
+		break;
+	default: {
+		const char *text;
+		adremap_dnv av = {0};
+		struct berval dn;
+		rc = slap_str2ad(c->argv[1], &av.ad_dnattr, &text);
+		if (rc) break;
+		if (av.ad_dnattr->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName) {
+			rc = 1;
+			snprintf(c->cr_msg, sizeof(c->cr_msg), "<%s> not a DN-valued attribute",
+				c->argv[0]);
+			Debug(LDAP_DEBUG_ANY, "%s: %s(%s)\n", c->log, c->cr_msg, c->argv[1]);
+			break;
+		}
+		rc = slap_str2ad(c->argv[2], &av.ad_deref, &text);
+		if (rc) break;
+		rc = slap_str2ad(c->argv[3], &av.ad_newattr, &text);
+		if (rc) break;
+		av.ad_group = oc_find(c->argv[4]);
+		if (!av.ad_group) {
+			rc = 1;
+			break;
+		}
+		av.ad_mapgrp = oc_find(c->argv[5]);
+		if (!av.ad_mapgrp) {
+			rc = 1;
+			break;
+		}
+		av.ad_refgrp = oc_find(c->argv[6]);
+		if (!av.ad_refgrp) {
+			rc = 1;
+			break;
+		}
+		ber_str2bv(c->argv[7], 0, 0, &dn);
+		rc = dnNormalize(0, NULL, NULL, &dn, &av.ad_refbase, NULL);
+		if (rc) break;
+
+		for (a2 = &ai->ai_dnv; *a2; a2 = &(*a2)->ad_next);
+		ad = ch_malloc(sizeof(adremap_dnv));
+		ad->ad_next = NULL;
+		ad->ad_dnattr = av.ad_dnattr;
+		ad->ad_deref = av.ad_deref;
+		ad->ad_newattr = av.ad_newattr;
+		ad->ad_group = av.ad_group;
+		ad->ad_mapgrp = av.ad_mapgrp;
+		ad->ad_refgrp = av.ad_refgrp;
+		ad->ad_refbase = av.ad_refbase;
+		*a2 = ad;
+		break;
+		}
+	}
+	return rc;
+}
+
+typedef struct adremap_ctx {
+	slap_overinst *on;
+	AttributeName an;
+	AttributeDescription *ad;
+	int an_swap;
+} adremap_ctx;
+
+static int
+adremap_search_resp(
+	Operation *op,
+	SlapReply *rs
+)
+{
+	adremap_ctx *ctx = op->o_callback->sc_private;
+	slap_overinst *on = ctx->on;
+	adremap_info *ai = on->on_bi.bi_private;
+	adremap_case *ac;
+	adremap_dnv *ad;
+	Attribute *a;
+	Entry *e;
+
+	if (rs->sr_type != REP_SEARCH)
+		return SLAP_CB_CONTINUE;
+
+	/* we munged the attr list, restore it to original */
+	if (ctx->an_swap) {
+		int i;
+		ctx->an_swap = 0;
+		for (i=0; rs->sr_attrs[i].an_name.bv_val; i++) {
+			if (rs->sr_attrs[i].an_desc == ctx->ad) {
+				rs->sr_attrs[i] = ctx->an;
+				break;
+			}
+		}
+		/* Usually rs->sr_attrs is just op->ors_attrs, but
+		 * overlays like rwm may make a new copy. Fix both
+		 * if needed.
+		 */
+		if (op->ors_attrs != rs->sr_attrs) {
+			for (i=0; op->ors_attrs[i].an_name.bv_val; i++) {
+				if (op->ors_attrs[i].an_desc == ctx->ad) {
+					op->ors_attrs[i] = ctx->an;
+					break;
+				}
+			}
+		}
+	}
+	e = rs->sr_entry;
+	for (ac = ai->ai_case; ac; ac = ac->ac_next) {
+		a = attr_find(e->e_attrs, ac->ac_attr);
+		if (a) {
+			int i, j;
+			if (!(rs->sr_flags & REP_ENTRY_MODIFIABLE)) {
+				e = entry_dup(e);
+				rs_replace_entry(op, rs, on, e);
+				rs->sr_flags |= REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
+				a = attr_find(e->e_attrs, ac->ac_attr);
+			}
+			for (i=0; i<a->a_numvals; i++) {
+				unsigned char *c = a->a_vals[i].bv_val;
+				for (j=0; j<a->a_vals[i].bv_len; j++)
+					if (isupper(c[j]))
+						c[j] = tolower(c[j]);
+			}
+		}
+	}
+	for (ad = ai->ai_dnv; ad; ad = ad->ad_next) {
+		a = attr_find(e->e_attrs, ad->ad_dnattr);
+		if (a) {
+			Entry *n;
+			Attribute *dr;
+			int i, rc;
+			if (!(rs->sr_flags & REP_ENTRY_MODIFIABLE)) {
+				e = entry_dup(e);
+				rs_replace_entry(op, rs, on, e);
+				rs->sr_flags |= REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
+				a = attr_find(e->e_attrs, ad->ad_dnattr);
+			}
+			for (i=0; i<a->a_numvals; i++) {
+				struct berval dv;
+				dv = ad->ad_deref->ad_cname;
+					/* If the RDN uses the deref attr, just use it directly */
+				if (a->a_nvals[i].bv_val[dv.bv_len] == '=' &&
+					!memcmp(a->a_nvals[i].bv_val, dv.bv_val, dv.bv_len)) {
+					struct berval bv, nv;
+					char *ptr;
+					bv = a->a_vals[i];
+					nv = a->a_nvals[i];
+					bv.bv_val += dv.bv_len + 1;
+					ptr = strchr(bv.bv_val, ',');
+					if (ptr)
+						bv.bv_len = ptr - bv.bv_val;
+					else
+						bv.bv_len -= dv.bv_len+1;
+					nv.bv_val += dv.bv_len + 1;
+					ptr = strchr(nv.bv_val, ',');
+					if (ptr)
+						nv.bv_len = ptr - nv.bv_val;
+					else
+						nv.bv_len -= dv.bv_len+1;
+					attr_merge_one(e, ad->ad_newattr, &bv, &nv);
+				} else {
+					/* otherwise look up the deref attr */
+					n = NULL;
+					rc = be_entry_get_rw(op, &a->a_nvals[i], NULL, ad->ad_deref, 0, &n);
+					if (!rc && n) {
+						dr = attr_find(n->e_attrs, ad->ad_deref);
+						if (dr)
+							attr_merge_one(e, ad->ad_newattr, dr->a_vals, dr->a_nvals);
+						be_entry_release_r(op, n);
+					}
+				}
+			}
+		}
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static int adremap_refsearch(
+	Operation *op,
+	SlapReply *rs
+)
+{
+	if (rs->sr_type == REP_SEARCH) {
+		slap_callback *sc = op->o_callback;
+		struct berval *dn = sc->sc_private;
+		ber_dupbv_x(dn, &rs->sr_entry->e_nname, op->o_tmpmemctx);
+		return LDAP_SUCCESS;
+	}
+	return rs->sr_err;
+}
+
+static adremap_dnv *adremap_filter(
+	Operation *op,
+	adremap_info *ai
+)
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	Filter *f = op->ors_filter, *fn = NULL;
+	adremap_dnv *ad = NULL;
+	struct berval bv;
+	int fextra = 0;
+
+	/* Do we need to munge the filter? First see if it's of
+	 * the form (objectClass=<mapgrp>)
+	 * or form (&(objectClass=<mapgrp>)...)
+	 * or form (&(&(objectClass=<mapgrp>)...)...)
+	 */
+	if (f->f_choice == LDAP_FILTER_AND && f->f_and) {
+		fextra = 1;
+		f = f->f_and;
+		fn = f->f_next;
+	}
+	if (f->f_choice == LDAP_FILTER_AND && f->f_and) {
+		fextra = 2;
+		f = f->f_and;
+	}
+	if (f->f_choice == LDAP_FILTER_EQUALITY &&
+		f->f_av_desc == slap_schema.si_ad_objectClass) {
+		struct berval bv = f->f_av_value;
+
+		for (ad = ai->ai_dnv; ad; ad = ad->ad_next) {
+			if (!ber_bvstrcasecmp( &bv, &ad->ad_mapgrp->soc_cname )) {
+			/* Now check to see if next element is (<newattr>=foo) */
+				Filter *fnew;
+				if (fn && fn->f_choice == LDAP_FILTER_EQUALITY &&
+					fn->f_av_desc == ad->ad_newattr) {
+					Filter fr[3];
+					AttributeAssertion aa[2] = {0};
+					Operation op2;
+					slap_callback cb = {0};
+					SlapReply rs = {REP_RESULT};
+					struct berval dn = BER_BVNULL;
+
+					/* It's a match, setup a search with filter
+					 * (&(objectclass=<refgrp>)(<deref>=foo))
+					 */
+					fr[0].f_choice = LDAP_FILTER_AND;
+					fr[0].f_and = &fr[1];
+					fr[0].f_next = NULL;
+
+					fr[1].f_choice = LDAP_FILTER_EQUALITY;
+					fr[1].f_ava = &aa[0];
+					fr[1].f_av_desc = slap_schema.si_ad_objectClass;
+					fr[1].f_av_value = ad->ad_refgrp->soc_cname;
+					fr[1].f_next = &fr[2];
+
+					fr[2].f_choice = LDAP_FILTER_EQUALITY;
+					fr[2].f_ava = &aa[1];
+					fr[2].f_av_desc = ad->ad_deref;
+					fr[2].f_av_value = fn->f_av_value;
+					fr[2].f_next = NULL;
+
+					/* Search with this filter to retrieve target DN */
+					op2 = *op;
+					op2.o_callback = &cb;
+					cb.sc_response = adremap_refsearch;
+					cb.sc_private = &dn;
+					op2.o_req_dn = ad->ad_refbase;
+					op2.o_req_ndn = ad->ad_refbase;
+					op2.ors_filter = fr;
+					filter2bv_x(op, fr, &op2.ors_filterstr);
+					op2.ors_deref = LDAP_DEREF_NEVER;
+					op2.ors_slimit = 1;
+					op2.ors_tlimit = SLAP_NO_LIMIT;
+					op2.ors_attrs = slap_anlist_no_attrs;
+					op2.ors_attrsonly = 1;
+					op2.o_no_schema_check = 1;
+					op2.o_bd->bd_info = (BackendInfo *)on->on_info;
+					op2.o_bd->be_search(&op2, &rs);
+					op2.o_bd->bd_info = (BackendInfo *)on;
+					op->o_tmpfree(op2.ors_filterstr.bv_val, op->o_tmpmemctx);
+
+					if (!dn.bv_len) {	/* no match was found */
+						ad = NULL;
+						break;
+					}
+
+					if (rs.sr_err) {	/* sizelimit exceeded, etc.: invalid name */
+						op->o_tmpfree(dn.bv_val, op->o_tmpmemctx);
+						ad = NULL;
+						break;
+					}
+
+					/* Build a new filter of form
+					 * (&(objectclass=<group>)(<dnattr>=foo-DN)...)
+					 */
+					f = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
+					f->f_choice = LDAP_FILTER_AND;
+					fnew = f;
+					f->f_next = NULL;
+
+					f->f_and = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
+					f = f->f_and;
+					f->f_choice = LDAP_FILTER_EQUALITY;
+					f->f_ava = op->o_tmpcalloc(1, sizeof(AttributeAssertion), op->o_tmpmemctx);
+					f->f_av_desc = slap_schema.si_ad_objectClass;
+					ber_dupbv_x(&f->f_av_value, &ad->ad_group->soc_cname, op->o_tmpmemctx);
+
+					f->f_next = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
+					f = f->f_next;
+					f->f_choice = LDAP_FILTER_EQUALITY;
+					f->f_ava = op->o_tmpcalloc(1, sizeof(AttributeAssertion), op->o_tmpmemctx);
+					f->f_av_desc = ad->ad_dnattr;
+					f->f_av_value = dn;
+
+					f->f_next = fn->f_next;
+					fn->f_next = NULL;
+				} else {
+					/* Build a new filter of form
+					 * (objectclass=<group>)
+					 */
+					f->f_next = NULL;	/* disconnect old chain */
+
+					f = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
+					f->f_choice = LDAP_FILTER_EQUALITY;
+					f->f_ava = op->o_tmpcalloc(1, sizeof(AttributeAssertion), op->o_tmpmemctx);
+					f->f_av_desc = slap_schema.si_ad_objectClass;
+					ber_dupbv_x(&f->f_av_value, &ad->ad_group->soc_cname, op->o_tmpmemctx);
+
+					/* If there was a wrapping (&), attach it. */
+					if (fextra) {
+						fnew = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
+						fnew->f_choice = LDAP_FILTER_AND;
+						fnew->f_and = f;
+						fnew->f_next = NULL;
+						f->f_next = fn;
+					} else {
+						fnew = f;
+						f->f_next = NULL;
+					}
+				}
+				if (fextra > 1) {
+					f = op->o_tmpalloc(sizeof(Filter), op->o_tmpmemctx);
+					f->f_choice = LDAP_FILTER_AND;
+					f->f_and = fnew->f_and;
+					f->f_next = f->f_and->f_next;
+					f->f_and->f_next = op->ors_filter->f_and->f_and->f_next;
+					op->ors_filter->f_and->f_and->f_next = NULL;
+					fnew->f_and = f;
+				}
+				filter_free_x(op, op->ors_filter, 1);
+				op->o_tmpfree(op->ors_filterstr.bv_val, op->o_tmpmemctx);
+				op->ors_filter = fnew;
+				filter2bv_x(op, op->ors_filter, &op->ors_filterstr);
+				break;
+			}
+		}
+	}
+	return ad;
+}
+
+static int
+adremap_search(
+	Operation *op,
+	SlapReply *rs
+)
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	adremap_info *ai = (adremap_info *) on->on_bi.bi_private;
+	adremap_ctx *ctx;
+	adremap_dnv *ad = NULL;
+	slap_callback *cb;
+
+	/* Is this our own internal search? Ignore it */
+	if (op->o_no_schema_check)
+		return SLAP_CB_CONTINUE;
+
+	if (ai->ai_dnv)
+		/* check for filter match, fallthru if none */
+		ad = adremap_filter(op, ai);
+
+	cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(adremap_ctx), op->o_tmpmemctx);
+	cb->sc_response = adremap_search_resp;
+	cb->sc_private = cb+1;
+	cb->sc_next = op->o_callback;
+	op->o_callback = cb;
+	ctx = cb->sc_private;
+	ctx->on = on;
+	if (ad && op->ors_attrs) {	/* see if we need to remap a search attr */
+		int i;
+		for (i=0; op->ors_attrs[i].an_name.bv_val; i++) {
+			if (op->ors_attrs[i].an_desc == ad->ad_newattr) {
+				ctx->an_swap = 1;
+				ctx->ad = ad->ad_dnattr;
+				ctx->an = op->ors_attrs[i];
+				op->ors_attrs[i].an_desc = ad->ad_dnattr;
+				op->ors_attrs[i].an_name = ad->ad_dnattr->ad_cname;
+				break;
+			}
+		}
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+adremap_db_init(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst *on = (slap_overinst *) be->bd_info;
+
+	/* initialize private structure to store configuration */
+	on->on_bi.bi_private = ch_calloc( 1, sizeof(adremap_info) );
+
+	return 0;
+}
+
+static int
+adremap_db_destroy(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst *on = (slap_overinst *) be->bd_info;
+	adremap_info *ai = (adremap_info *) on->on_bi.bi_private;
+	adremap_case *ac;
+	adremap_dnv *ad;
+
+	/* free config */
+	for (ac = ai->ai_case; ac; ac = ai->ai_case) {
+		ai->ai_case = ac->ac_next;
+		ch_free(ac);
+	}
+	for (ad = ai->ai_dnv; ad; ad = ai->ai_dnv) {
+		ai->ai_dnv = ad->ad_next;
+		ch_free(ad);
+	}
+	free( ai );
+
+	return 0;
+}
+
+static slap_overinst adremap;
+
+int adremap_initialize()
+{
+	int i, code;
+
+	adremap.on_bi.bi_type = "adremap";
+	adremap.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	adremap.on_bi.bi_db_init = adremap_db_init;
+	adremap.on_bi.bi_db_destroy = adremap_db_destroy;
+	adremap.on_bi.bi_op_search = adremap_search;
+
+	/* register configuration directives */
+	adremap.on_bi.bi_cf_ocs = adremapocs;
+	code = config_register_schema( adremapcfg, adremapocs );
+	if ( code ) return code;
+
+	return overlay_register( &adremap );
+}
+
+#if SLAPD_OVER_ADREMAP == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	return adremap_initialize();
+}
+#endif
+
+#endif	/* defined(SLAPD_OVER_ADREMAP) */
diff --git a/contrib/slapd-modules/adremap/slapo-adremap.5 b/contrib/slapd-modules/adremap/slapo-adremap.5
new file mode 100644
index 0000000..8b1fa45
--- /dev/null
+++ b/contrib/slapd-modules/adremap/slapo-adremap.5
@@ -0,0 +1,104 @@
+.TH SLAPO-ADREMAP 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2015 Howard Chu, All Rights Reserved.
+.\" $OpenLDAP$
+.SH NAME
+slapo-adremap \- AD Remap overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+The
+.B adremap
+overlay to
+.BR slapd (8)
+remaps some attribute values for compatibility between Microsoft AD
+and older POSIX systems' PAM/NSS clients. It can be configured to
+convert values of given attributes to lower case, and it can be
+configured to generate RFC2307-compliant group memberships based
+on RFC2307bis groups. All mapping is only performed on entries
+returned as search responses.
+
+.SH CONFIGURATION
+The config directives that are specific to the
+.B adremap
+overlay must be prefixed by
+.BR adremap\- ,
+to avoid potential conflicts with directives specific to the underlying 
+database or to other stacked overlays.
+
+.TP
+.B overlay adremap
+This directive adds the
+.B adremap
+overlay to the current database, see
+.BR slapd.conf (5)
+for details.
+
+.LP
+These
+.B slapd.conf
+configuration options are defined for the adremap overlay. They must
+appear after the
+.B overlay
+directive. They can each be specified multiple times:
+.TP
+.B adremap-downcase <attr>
+Specify an attributeType whose values will all be mapped to lowercase
+when returned in search responses.
+.TP
+.B adremap-dnmap <dnattr> <targetattr> <newattr> <remoteOC> <localOC> <targetOC> <baseDN>
+Specify a DN-valued attributeType whose values will be dereferenced. The
+.B <targetattr>
+of the target entry will be retrieved and its value will be added to the
+.B <newattr>
+in the entry. In addition, searches using a filter of the form
+.B (&(objectClass=<localOC>)(<newattr>=xxx))
+will be rewritten into the form
+.BR (&(objectClass=<remoteOC>)(<dnattr>=xxx-DN)) .
+This rewrite will accomplished by performing an additional internal search,
+with subtree scope, using the specified baseDN and a filter of the form
+.BR (&(objectClass=<targetOC>)(<targetattr>=xxx)) .
+
+
+.SH EXAMPLE
+This example configures the
+.B adremap
+overlay to map all
+.B uid
+attributes to lowercase, and create
+.B memberUid
+values for group entries. The mapping will turn requests for posixGroup
+entries into requests for groupOfNames entries, and the internal search
+will use inetOrgPerson entries under the ou=People,dc=example,dc=com subtree.
+
+Add the following to
+.BR slapd.conf (5):
+
+.LP
+.nf
+    database <database>
+    # ...
+
+    overlay adremap
+    adremap-downcase uid
+    adremap-dnmap member uid memberUid groupOfNames posixGroup inetOrgPerson ou=people,dc=example,dc=com
+.fi
+.LP
+.B slapd
+must also load
+.B adremap.la,
+if compiled as a run-time module;
+
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR slapd (8).
+The
+.BR slapo-adremap (5)
+overlay supports dynamic configuration via
+.BR back-config.
+.SH ACKNOWLEDGEMENTS
+.P
+This module was written in 2015 by Howard Chu.
diff --git a/contrib/slapd-modules/allop/Makefile b/contrib/slapd-modules/allop/Makefile
new file mode 100644
index 0000000..053f377
--- /dev/null
+++ b/contrib/slapd-modules/allop/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = allop.la
+MANPAGES = slapo-allop.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+allop.la: allop.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/allop/README b/contrib/slapd-modules/allop/README
new file mode 100644
index 0000000..3768e6a
--- /dev/null
+++ b/contrib/slapd-modules/allop/README
@@ -0,0 +1,26 @@
+This directory contains a slapd overlay, allop.
+The intended usage is as a global overlay for use with those clients
+that do not make use of the RFC3673 allOp ("+") in the requested 
+attribute list, but expect all operational attributes to be returned.
+Usage: add to slapd.conf(5)
+
+moduleload	path/to/allop.so
+
+overlay		allop
+allop-URI	<ldapURI>
+
+if the allop-URI is not given, the rootDSE, i.e. "ldap:///??base",
+is assumed.
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+gcc -shared -I../../../include -I../../../servers/slapd -Wall -g \
+	-o allop.so allop.c
+
+---
+Copyright 2004-2022 The OpenLDAP Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
diff --git a/contrib/slapd-modules/allop/allop.c b/contrib/slapd-modules/allop/allop.c
new file mode 100644
index 0000000..52fab3a
--- /dev/null
+++ b/contrib/slapd-modules/allop/allop.c
@@ -0,0 +1,262 @@
+/* allop.c - returns all operational attributes when appropriate */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2005-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion in
+ * OpenLDAP Software.
+ */
+
+/*
+ * The intended usage is as a global overlay for use with those clients
+ * that do not make use of the RFC3673 allOp ("+") in the requested 
+ * attribute list, but expect all operational attributes to be returned.
+ * Usage: add
+ *
+
+overlay		allop
+allop-URI	<ldapURI>
+
+ *
+ * if the allop-URI is not given, the rootDSE, i.e. "ldap:///??base",
+ * is assumed.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+
+#define	SLAP_OVER_VERSION_REQUIRE(major,minor,patch) \
+	( \
+		( LDAP_VENDOR_VERSION_MAJOR == X || LDAP_VENDOR_VERSION_MAJOR >= (major) ) \
+		&& ( LDAP_VENDOR_VERSION_MINOR == X || LDAP_VENDOR_VERSION_MINOR >= (minor) ) \
+		&& ( LDAP_VENDOR_VERSION_PATCH == X || LDAP_VENDOR_VERSION_PATCH >= (patch) ) \
+	)
+
+#if !SLAP_OVER_VERSION_REQUIRE(2,3,0)
+#error "version mismatch"
+#endif
+
+typedef struct allop_t {
+	struct berval	ao_ndn;
+	int		ao_scope;
+} allop_t;
+
+static int
+allop_db_config(
+	BackendDB	*be,
+	const char	*fname,
+	int		lineno,
+	int		argc,
+	char		**argv )
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	allop_t		*ao = (allop_t *)on->on_bi.bi_private;
+
+	if ( strcasecmp( argv[ 0 ], "allop-uri" ) == 0 ) {
+		LDAPURLDesc	*lud;
+		struct berval	dn,
+				ndn;
+		int		scope,
+				rc = LDAP_SUCCESS;
+
+		if ( argc != 2 ) {
+			fprintf( stderr, "%s line %d: "
+				"need exactly 1 arg "
+				"in \"allop-uri <ldapURI>\" "
+				"directive.\n",
+				fname, lineno );
+			return 1;
+		}
+
+		if ( ldap_url_parse( argv[ 1 ], &lud ) != LDAP_URL_SUCCESS ) {
+			return -1;
+		}
+
+		scope = lud->lud_scope;
+		if ( scope == LDAP_SCOPE_DEFAULT ) {
+			scope = LDAP_SCOPE_BASE;
+		}
+
+		if ( lud->lud_dn == NULL || lud->lud_dn[ 0 ] == '\0' ) {
+			if ( scope == LDAP_SCOPE_BASE ) {
+				BER_BVZERO( &ndn );
+
+			} else {
+				ber_str2bv( "", 0, 1, &ndn );
+			}
+
+		} else {
+
+			ber_str2bv( lud->lud_dn, 0, 0, &dn );
+			rc = dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL );
+		}
+
+		ldap_free_urldesc( lud );
+		if ( rc != LDAP_SUCCESS ) {
+			return -1;
+		}
+
+		if ( BER_BVISNULL( &ndn ) ) {
+			/* rootDSE */
+			if ( ao != NULL ) {
+				ch_free( ao->ao_ndn.bv_val );
+				ch_free( ao );
+				on->on_bi.bi_private = NULL;
+			}
+
+		} else {
+			if ( ao == NULL ) {
+				ao = ch_calloc( 1, sizeof( allop_t ) );
+				on->on_bi.bi_private = (void *)ao;
+
+			} else {
+				ch_free( ao->ao_ndn.bv_val );
+			}
+
+			ao->ao_ndn = ndn;
+			ao->ao_scope = scope;
+		}
+
+	} else {
+		return SLAP_CONF_UNKNOWN;
+	}
+
+	return 0;
+}
+
+static int
+allop_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	allop_t		*ao = (allop_t *)on->on_bi.bi_private;
+
+	if ( ao != NULL ) {
+		assert( !BER_BVISNULL( &ao->ao_ndn ) );
+
+		ch_free( ao->ao_ndn.bv_val );
+		ch_free( ao );
+		on->on_bi.bi_private = NULL;
+	}
+
+	return 0;
+}
+
+static int
+allop_op_search( Operation *op, SlapReply *rs )
+{
+	slap_overinst	*on = (slap_overinst *)op->o_bd->bd_info;
+	allop_t		*ao = (allop_t *)on->on_bi.bi_private;
+
+	slap_mask_t	mask;
+	int		i,
+			add_allUser = 0;
+
+	if ( ao == NULL ) {
+		if ( !BER_BVISEMPTY( &op->o_req_ndn )
+			|| op->ors_scope != LDAP_SCOPE_BASE )
+		{
+			return SLAP_CB_CONTINUE;
+		}
+
+	} else {
+		if ( !dnIsSuffix( &op->o_req_ndn, &ao->ao_ndn ) ) {
+			return SLAP_CB_CONTINUE;
+		}
+
+		switch ( ao->ao_scope ) {
+		case LDAP_SCOPE_BASE:
+			if ( op->o_req_ndn.bv_len != ao->ao_ndn.bv_len ) {
+				return SLAP_CB_CONTINUE;
+			}
+			break;
+
+		case LDAP_SCOPE_ONELEVEL:
+			if ( op->ors_scope == LDAP_SCOPE_BASE ) {
+				struct berval	rdn = op->o_req_ndn;
+
+				rdn.bv_len -= ao->ao_ndn.bv_len + STRLENOF( "," );
+				if ( !dnIsOneLevelRDN( &rdn ) ) {
+					return SLAP_CB_CONTINUE;
+				}
+
+				break;
+			}
+			return SLAP_CB_CONTINUE;
+
+		case LDAP_SCOPE_SUBTREE:
+			break;
+		}
+	}
+
+	mask = slap_attr_flags( op->ors_attrs );
+	if ( SLAP_OPATTRS( mask ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	if ( !SLAP_USERATTRS( mask ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	i = 0;
+	if ( op->ors_attrs == NULL ) {
+		add_allUser = 1;
+
+	} else {
+		for ( ; !BER_BVISNULL( &op->ors_attrs[ i ].an_name ); i++ )
+			;
+	}
+
+	op->ors_attrs = op->o_tmprealloc( op->ors_attrs,
+		sizeof( AttributeName ) * ( i + add_allUser + 2 ),
+		op->o_tmpmemctx );
+
+	if ( add_allUser ) {
+		op->ors_attrs[ i ] = slap_anlist_all_user_attributes[ 0 ];
+		i++;
+	}
+
+	op->ors_attrs[ i ] = slap_anlist_all_operational_attributes[ 0 ];
+
+	BER_BVZERO( &op->ors_attrs[ i + 1 ].an_name );
+
+	return SLAP_CB_CONTINUE;
+}
+
+static slap_overinst 		allop;
+
+int
+allop_init()
+{
+	allop.on_bi.bi_type = "allop";
+
+	allop.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	allop.on_bi.bi_db_config = allop_db_config;
+	allop.on_bi.bi_db_destroy = allop_db_destroy;
+
+	allop.on_bi.bi_op_search = allop_op_search;
+
+	return overlay_register( &allop );
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	return allop_init();
+}
+
diff --git a/contrib/slapd-modules/allop/slapo-allop.5 b/contrib/slapd-modules/allop/slapo-allop.5
new file mode 100644
index 0000000..9e7fdc9
--- /dev/null
+++ b/contrib/slapd-modules/allop/slapo-allop.5
@@ -0,0 +1,63 @@
+.TH SLAPO-ALLOP 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2005-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapo-allop \- All Operational Attributes overlay
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+The All Operational Attributes overlay is designed to allow slapd to
+interoperate with dumb clients that expect all attributes, including
+operational ones, to be returned when "*" or an empty attribute list
+is requested, as opposed to RFC2251 and RFC3673.
+.SH CONFIGURATION
+These
+.B slapd.conf
+options apply to the All Operational overlay.
+They should appear after the
+.B overlay
+directive and before any subsequent
+.B database
+directive.
+.TP
+.B allop-URI <ldapURI>
+Specify the base and the scope of search operations that trigger the overlay.
+By default, it is "ldap:///??base", i.e. it only applies to the rootDSE.
+This requires the overlay to be instantiated as global.
+
+.SH EXAMPLES
+.LP
+default behavior: only affects requests to the rootDSE
+.nf
+        # global
+        overlay         allop
+.fi
+.LP
+affects all requests
+.nf
+        # global
+        overlay         allop
+        allop-URI       "ldap:///??sub"
+.fi
+.LP
+affects only requests directed to the suffix of a database
+.nf
+        # per database
+        database        mdb
+        suffix          "dc=example,dc=com"
+        # database specific directives ...
+        overlay         allop
+        allop-URI       "ldap:///dc=example,dc=com??base"
+.fi
+
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5).
+
+.SH ACKNOWLEDGEMENTS
+.P
+This module was written in 2005 by Pierangelo Masarati for SysNet s.n.c.
diff --git a/contrib/slapd-modules/allowed/Makefile b/contrib/slapd-modules/allowed/Makefile
new file mode 100644
index 0000000..32cb432
--- /dev/null
+++ b/contrib/slapd-modules/allowed/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_ALLOWED=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = allowed.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+allowed.la: allowed.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/allowed/README b/contrib/slapd-modules/allowed/README
new file mode 100644
index 0000000..a1267cf
--- /dev/null
+++ b/contrib/slapd-modules/allowed/README
@@ -0,0 +1,73 @@
+This directory contains a slapd overlay, "allowed".
+
+    --- o --- o --- o ---
+
+It adds to entries returned by search operations the value of attributes
+
+"allowedAttributes"
+	<http://msdn.microsoft.com/en-us/library/ms675217(VS.85).aspx>
+
+"allowedAttributesEffective"
+	<http://msdn.microsoft.com/en-us/library/ms675218(VS.85).aspx>
+
+"allowedChildClasses"
+	<http://msdn.microsoft.com/en-us/library/ms675219(VS.85).aspx>
+
+"allowedChildClassesEffective"
+	<http://msdn.microsoft.com/en-us/library/ms675220(VS.85).aspx>
+
+No other use is made of those attributes: they cannot be compared,
+they cannot be used in search filters, they cannot be used in ACLs, ...
+
+    --- o --- o --- o ---
+
+Usage: add to slapd.conf(5)
+
+
+moduleload	path/to/allowed.so
+overlay		allowed
+
+or add
+
+dn: olcOverlay={0}allowed,olcDatabase={1}bdb,cn=config
+objectClass: olcOverlayConfig
+olcOverlay: {0}allowed
+
+as a child of the database that's intended to support this feature
+(replace "olcDatabase={1}bdb,cn=config" with the appropriate parent);
+or use
+
+dn: olcOverlay={0}allowed,olcDatabase={-1}frontend,cn=config
+objectClass: olcOverlayConfig
+olcOverlay: {0}allowed
+
+if it's supposed to be global.
+
+    --- o --- o --- o ---
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+gcc -shared -I../../../include -I../../../servers/slapd -Wall -g \
+	-o allowed.so allowed.c
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2006-2022 The OpenLDAP Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
+ACKNOWLEDGEMENTS:
+This work was initially developed by Pierangelo Masarati for inclusion in
+OpenLDAP Software.
+
diff --git a/contrib/slapd-modules/allowed/allowed.c b/contrib/slapd-modules/allowed/allowed.c
new file mode 100644
index 0000000..26e3106
--- /dev/null
+++ b/contrib/slapd-modules/allowed/allowed.c
@@ -0,0 +1,504 @@
+/* allowed.c - add allowed attributes based on ACL */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2006-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion in
+ * OpenLDAP Software.
+ */
+
+/*
+ * Rationale: return in allowedAttributes the attributes required/allowed
+ * by the objectClasses that are currently present in an object; return
+ * in allowedAttributesEffective the subset of the above that can be written
+ * by the identity that performs the search.
+ *
+ * Caveats:
+ * - right now, the overlay assumes that all values of the objectClass
+ *   attribute will be returned in rs->sr_entry; this may not be true
+ *   in general, but it usually is for back-mdb.  To generalize,
+ *   the search request should be analyzed, and if allowedAttributes or
+ *   allowedAttributesEffective are requested, add objectClass to the
+ *   requested attributes
+ * - it assumes that there is no difference between write-add and 
+ *   write-delete
+ * - it assumes that access rules do not depend on the values of the 
+ *   attributes or on the contents of the entry (attr/val, filter, ...)
+ *   allowedAttributes and allowedAttributesEffective cannot be used
+ *   in filters or in compare
+ */
+
+#include "portable.h"
+
+/* define SLAPD_OVER_ALLOWED=2 to build as run-time loadable module */
+#ifdef SLAPD_OVER_ALLOWED
+
+#include "slap.h"
+
+/*
+ * NOTE: part of the schema definition reported below is taken
+ * from Microsoft schema definitions (OID, NAME, SYNTAX);
+ *
+ * EQUALITY is taken from
+ * <http://www.redhat.com/archives/fedora-directory-devel/2006-August/msg00007.html>
+ * (posted by Andrew Bartlett)
+ *
+ * The rest is guessed.  Specifically
+ *
+ * DESC briefly describes the purpose
+ *
+ * NO-USER-MODIFICATION is added to make attributes operational
+ *
+ * USAGE is set to "dSAOperation" as per ITS#7493,
+ * to prevent replication, since this information
+ * is generated (based on ACL and identity of request)
+ * and not stored.
+ */
+
+#define AA_SCHEMA_AT "1.2.840.113556.1.4"
+
+static AttributeDescription
+		*ad_allowedChildClasses,
+		*ad_allowedChildClassesEffective,
+		*ad_allowedAttributes,
+		*ad_allowedAttributesEffective;
+
+static struct {
+	char *at;
+	AttributeDescription **ad;
+} aa_attrs[] = {
+	{ "( " AA_SCHEMA_AT ".911 "
+		"NAME 'allowedChildClasses' "
+		"EQUALITY objectIdentifierMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.38 "
+		/* added by me :) */
+		"DESC 'Child classes allowed for a given object' "
+		"NO-USER-MODIFICATION "
+		"USAGE dSAOperation )", &ad_allowedChildClasses },
+	{ "( " AA_SCHEMA_AT ".912 "
+		"NAME 'allowedChildClassesEffective' "
+		"EQUALITY objectIdentifierMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.38 "
+		/* added by me :) */
+		"DESC 'Child classes allowed for a given object according to ACLs' "
+		"NO-USER-MODIFICATION "
+		"USAGE dSAOperation )", &ad_allowedChildClassesEffective },
+	{ "( " AA_SCHEMA_AT ".913 "
+		"NAME 'allowedAttributes' "
+		"EQUALITY objectIdentifierMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.38 "
+		/* added by me :) */
+		"DESC 'Attributes allowed for a given object' "
+		"NO-USER-MODIFICATION "
+		"USAGE dSAOperation )", &ad_allowedAttributes },
+	{ "( " AA_SCHEMA_AT ".914 "
+		"NAME 'allowedAttributesEffective' "
+		"EQUALITY objectIdentifierMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.38 "
+		/* added by me :) */
+		"DESC 'Attributes allowed for a given object according to ACLs' "
+		"NO-USER-MODIFICATION "
+		"USAGE dSAOperation )", &ad_allowedAttributesEffective },
+
+	/* TODO: add objectClass stuff? */
+
+	{ NULL, NULL }
+};
+
+static int
+aa_add_at( AttributeType *at, AttributeType ***atpp )
+{
+	int		i = 0;
+
+	if ( *atpp ) {
+		for ( i = 0; (*atpp)[ i ] != NULL; i++ ) {
+			if ( (*atpp)[ i ] == at ) {
+				break;
+			}
+		}
+	
+		if ( (*atpp)[ i ] != NULL ) {
+			return 0;
+		}
+	}
+
+	*atpp = ch_realloc( *atpp, sizeof( AttributeType * ) * ( i + 2 ) );
+	(*atpp)[ i ] = at;
+	(*atpp)[ i + 1 ] = NULL;
+
+	return 0;
+}
+
+static int
+aa_add_oc( ObjectClass *oc, ObjectClass ***ocpp, AttributeType ***atpp )
+{
+	int		i = 0;
+
+	if ( *ocpp ) {
+		for ( ; (*ocpp)[ i ] != NULL; i++ ) {
+			if ( (*ocpp)[ i ] == oc ) {
+				break;
+			}
+		}
+
+		if ( (*ocpp)[ i ] != NULL ) {
+			return 0;
+		}
+	}
+
+	*ocpp = ch_realloc( *ocpp, sizeof( ObjectClass * ) * ( i + 2 ) );
+	(*ocpp)[ i ] = oc;
+	(*ocpp)[ i + 1 ] = NULL;
+
+	if ( oc->soc_required ) {
+		int		i;
+
+		for ( i = 0; oc->soc_required[ i ] != NULL; i++ ) {
+			aa_add_at( oc->soc_required[ i ], atpp );
+		}
+	}
+
+	if ( oc->soc_allowed ) {
+		int		i;
+
+		for ( i = 0; oc->soc_allowed[ i ] != NULL; i++ ) {
+			aa_add_at( oc->soc_allowed[ i ], atpp );
+		}
+	}
+
+	return 0;
+}
+
+static int
+aa_operational( Operation *op, SlapReply *rs )
+{
+	Attribute		*a, **ap;
+	AccessControlState	acl_state = ACL_STATE_INIT;
+	struct berval		*v;
+	AttributeType		**atp = NULL;
+	ObjectClass		**ocp = NULL;
+
+#define	GOT_NONE	(0x0U)
+#define	GOT_C		(0x1U)
+#define	GOT_CE		(0x2U)
+#define	GOT_A		(0x4U)
+#define	GOT_AE		(0x8U)
+#define	GOT_ALL		(GOT_C|GOT_CE|GOT_A|GOT_AE)
+	int		got = GOT_NONE;
+
+	/* only add if requested */
+	if ( SLAP_OPATTRS( rs->sr_attr_flags ) ) {
+		got = GOT_ALL;
+
+	} else {
+		if ( ad_inlist( ad_allowedChildClasses, rs->sr_attrs ) ) {
+			got |= GOT_C;
+		}
+
+		if ( ad_inlist( ad_allowedChildClassesEffective, rs->sr_attrs ) ) {
+			got |= GOT_CE;
+		}
+
+		if ( ad_inlist( ad_allowedAttributes, rs->sr_attrs ) ) {
+			got |= GOT_A;
+		}
+
+		if ( ad_inlist( ad_allowedAttributesEffective, rs->sr_attrs ) ) {
+			got |= GOT_AE;
+		}
+	}
+
+	if ( got == GOT_NONE ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	/* shouldn't be called without an entry; please check */
+	assert( rs->sr_entry != NULL );
+
+	for ( ap = &rs->sr_operational_attrs; *ap != NULL; ap = &(*ap)->a_next )
+		/* go to last */ ;
+
+	/* see caveats; this is not guaranteed for all backends */
+	a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
+	if ( a == NULL ) {
+		goto do_oc;
+	}
+
+	/* if client has no access to objectClass attribute; don't compute */
+	if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_objectClass,
+				NULL, ACL_READ, &acl_state ) )
+	{
+		return SLAP_CB_CONTINUE;
+	}
+
+	for ( v = a->a_nvals; !BER_BVISNULL( v ); v++ ) {
+		ObjectClass	*oc = oc_bvfind( v );
+
+		assert( oc != NULL );
+
+		/* if client has no access to specific value, don't compute */
+		if ( !access_allowed( op, rs->sr_entry,
+			slap_schema.si_ad_objectClass,
+			&oc->soc_cname, ACL_READ, &acl_state ) )
+		{
+			continue;
+		}
+
+		aa_add_oc( oc, &ocp, &atp );
+
+		if ( oc->soc_sups ) {
+			int i;
+
+			for ( i = 0; oc->soc_sups[ i ] != NULL; i++ ) {
+				aa_add_oc( oc->soc_sups[ i ], &ocp, &atp );
+			}
+		}
+	}
+
+	ch_free( ocp );
+
+	if ( atp != NULL ) {
+		BerVarray	bv_allowed = NULL,
+				bv_effective = NULL;
+		int		i, ja = 0, je = 0;
+
+		for ( i = 0; atp[ i ] != NULL; i++ )
+			/* just count */ ;
+	
+		if ( got & GOT_A ) {
+			bv_allowed = ch_calloc( i + 1,  sizeof( struct berval ) );
+		}
+		if ( got & GOT_AE ) {
+			bv_effective = ch_calloc( i + 1, sizeof( struct berval ) );
+		}
+
+		for ( i = 0, ja = 0, je = 0; atp[ i ] != NULL; i++ ) {
+			if ( got & GOT_A ) {
+				ber_dupbv( &bv_allowed[ ja ], &atp[ i ]->sat_cname );
+				ja++;
+			}
+
+			if ( got & GOT_AE ) {
+				AttributeDescription	*ad = NULL;
+				const char		*text = NULL;
+	
+				if ( slap_bv2ad( &atp[ i ]->sat_cname, &ad, &text ) ) {
+					/* log? */
+					continue;
+				}
+
+				if ( access_allowed( op, rs->sr_entry,
+					ad, NULL, ACL_WRITE, NULL ) )
+				{
+					ber_dupbv( &bv_effective[ je ], &atp[ i ]->sat_cname );
+					je++;
+				}
+			}
+		}
+
+		ch_free( atp );
+
+		if ( ( got & GOT_A ) && ja > 0 ) {
+			*ap = attr_alloc( ad_allowedAttributes );
+			(*ap)->a_vals = bv_allowed;
+			(*ap)->a_nvals = bv_allowed;
+			(*ap)->a_numvals = ja;
+			ap = &(*ap)->a_next;
+		}
+
+		if ( ( got & GOT_AE ) && je > 0 ) {
+			*ap = attr_alloc( ad_allowedAttributesEffective );
+			(*ap)->a_vals = bv_effective;
+			(*ap)->a_nvals = bv_effective;
+			(*ap)->a_numvals = je;
+			ap = &(*ap)->a_next;
+		}
+
+		*ap = NULL;
+	}
+
+do_oc:;
+	if ( ( got & GOT_C ) || ( got & GOT_CE ) ) {
+		BerVarray	bv_allowed = NULL,
+				bv_effective = NULL;
+		int		i, ja = 0, je = 0;
+
+		ObjectClass	*oc;
+
+		for ( i = 0, oc_start( &oc ); oc != NULL; oc_next( &oc ) ) {
+			/* we can only add AUXILIARY objectClasses */
+			if ( oc->soc_kind != LDAP_SCHEMA_AUXILIARY ) {
+				continue;
+			}
+
+			i++;
+		}
+
+		if ( got & GOT_C ) {
+			bv_allowed = ch_calloc( i + 1,  sizeof( struct berval ) );
+		}
+		if ( got & GOT_CE ) {
+			bv_effective = ch_calloc( i + 1, sizeof( struct berval ) );
+		}
+
+		for ( oc_start( &oc ); oc != NULL; oc_next( &oc ) ) {
+			/* we can only add AUXILIARY objectClasses */
+			if ( oc->soc_kind != LDAP_SCHEMA_AUXILIARY ) {
+				continue;
+			}
+
+			if ( got & GOT_C ) {
+				ber_dupbv( &bv_allowed[ ja ], &oc->soc_cname );
+				ja++;
+			}
+
+			if ( got & GOT_CE ) {
+				if ( !access_allowed( op, rs->sr_entry,
+					slap_schema.si_ad_objectClass,
+					&oc->soc_cname, ACL_WRITE, NULL ) )
+				{
+					goto done_ce;
+				}
+
+				if ( oc->soc_required ) {
+					for ( i = 0; oc->soc_required[ i ] != NULL; i++ ) {
+						AttributeDescription	*ad = NULL;
+						const char		*text = NULL;
+	
+						if ( slap_bv2ad( &oc->soc_required[ i ]->sat_cname, &ad, &text ) ) {
+							/* log? */
+							continue;
+						}
+
+						if ( !access_allowed( op, rs->sr_entry,
+							ad, NULL, ACL_WRITE, NULL ) )
+						{
+							goto done_ce;
+						}
+					}
+				}
+
+				ber_dupbv( &bv_effective[ je ], &oc->soc_cname );
+				je++;
+			}
+done_ce:;
+		}
+
+		if ( ( got & GOT_C ) && ja > 0 ) {
+			*ap = attr_alloc( ad_allowedChildClasses );
+			(*ap)->a_vals = bv_allowed;
+			(*ap)->a_nvals = bv_allowed;
+			(*ap)->a_numvals = ja;
+			ap = &(*ap)->a_next;
+		}
+
+		if ( ( got & GOT_CE ) && je > 0 ) {
+			*ap = attr_alloc( ad_allowedChildClassesEffective );
+			(*ap)->a_vals = bv_effective;
+			(*ap)->a_nvals = bv_effective;
+			(*ap)->a_numvals = je;
+			ap = &(*ap)->a_next;
+		}
+
+		*ap = NULL;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static slap_overinst aa;
+
+#if LDAP_VENDOR_VERSION_MINOR != X && LDAP_VENDOR_VERSION_MINOR <= 3
+/* backport register_at() from HEAD, to allow building with OL <= 2.3 */
+static int
+register_at( char *def, AttributeDescription **rad, int dupok )
+{
+	LDAPAttributeType *at;
+	int code, freeit = 0;
+	const char *err;
+	AttributeDescription *ad = NULL;
+
+	at = ldap_str2attributetype( def, &code, &err, LDAP_SCHEMA_ALLOW_ALL );
+	if ( !at ) {
+		Debug( LDAP_DEBUG_ANY,
+			"register_at: AttributeType \"%s\": %s, %s\n",
+				def, ldap_scherr2str(code), err );
+		return code;
+	}
+
+	code = at_add( at, 0, NULL, &err );
+	if ( code ) {
+		if ( code == SLAP_SCHERR_ATTR_DUP && dupok ) {
+			freeit = 1;
+
+		} else {
+			ldap_attributetype_free( at );
+			Debug( LDAP_DEBUG_ANY,
+				"register_at: AttributeType \"%s\": %s, %s\n",
+				def, scherr2str(code), err );
+			return code;
+		}
+	}
+	code = slap_str2ad( at->at_names[0], &ad, &err );
+	if ( freeit || code ) {
+		ldap_attributetype_free( at );
+	} else {
+		ldap_memfree( at );
+	}
+	if ( code ) {
+		Debug( LDAP_DEBUG_ANY, "register_at: AttributeType \"%s\": %s\n",
+			def, err );
+	}
+	if ( rad ) *rad = ad;
+	return code;
+}
+#endif
+
+#if SLAPD_OVER_ALLOWED == SLAPD_MOD_DYNAMIC
+static
+#endif /* SLAPD_OVER_ALLOWED == SLAPD_MOD_DYNAMIC */
+int
+aa_initialize( void )
+{
+	int i;
+
+	aa.on_bi.bi_type = "allowed";
+
+	aa.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	aa.on_bi.bi_operational = aa_operational;
+
+	/* aa schema integration */
+	for ( i = 0; aa_attrs[i].at; i++ ) {
+		int code;
+
+		code = register_at( aa_attrs[i].at, aa_attrs[i].ad, 0 );
+		if ( code ) {
+			Debug( LDAP_DEBUG_ANY,
+				"aa_initialize: register_at failed\n" );
+			return -1;
+		}
+	}
+
+	return overlay_register( &aa );
+}
+
+#if SLAPD_OVER_ALLOWED == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return aa_initialize();
+}
+#endif /* SLAPD_OVER_ALLOWED == SLAPD_MOD_DYNAMIC */
+
+#endif /* SLAPD_OVER_ALLOWED */
diff --git a/contrib/slapd-modules/authzid/Makefile b/contrib/slapd-modules/authzid/Makefile
new file mode 100644
index 0000000..ef9c4bc
--- /dev/null
+++ b/contrib/slapd-modules/authzid/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = authzid.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+authzid.la: authzid.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/authzid/authzid.c b/contrib/slapd-modules/authzid/authzid.c
new file mode 100644
index 0000000..37264bf
--- /dev/null
+++ b/contrib/slapd-modules/authzid/authzid.c
@@ -0,0 +1,390 @@
+/* authzid.c - RFC 3829 Authzid Control */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2010-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion
+ * in OpenLDAP Software.
+ */
+
+/*
+ * RFC 3829 Authzid
+ *
+ * must be instantiated as a global overlay
+ */
+
+#include "portable.h"
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+#include "ac/string.h"
+
+typedef struct authzid_conn_t {
+	Connection *conn;
+	int refcnt;
+	char authzid_flag;
+} authzid_conn_t;
+
+static ldap_pvt_thread_mutex_t authzid_mutex;
+static Avlnode *authzid_tree;
+
+static int
+authzid_conn_cmp( const void *c1, const void *c2 )
+{
+	const authzid_conn_t *ac1 = (const authzid_conn_t *)c1;
+	const authzid_conn_t *ac2 = (const authzid_conn_t *)c2;
+
+	return SLAP_PTRCMP( ac1->conn, ac2->conn );
+}
+
+static int
+authzid_conn_dup( void *c1, void *c2 )
+{
+	authzid_conn_t *ac1 = (authzid_conn_t *)c1;
+	authzid_conn_t *ac2 = (authzid_conn_t *)c2;
+
+	if ( ac1->conn == ac2->conn ) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int authzid_cid;
+static slap_overinst authzid;
+
+static authzid_conn_t *
+authzid_conn_find( Connection *c )
+{
+	authzid_conn_t *ac = NULL, tmp = { 0 };
+
+	tmp.conn = c;
+	ac = (authzid_conn_t *)ldap_avl_find( authzid_tree, (caddr_t)&tmp, authzid_conn_cmp );
+	if ( ac == NULL || ( ac != NULL && ac->refcnt != 0 ) ) {
+		ac = NULL;
+	}
+	if ( ac ) {
+		ac->refcnt++;
+	}
+
+	return ac;
+}
+
+static authzid_conn_t *
+authzid_conn_get( Connection *c )
+{
+	authzid_conn_t *ac = NULL;
+
+	ldap_pvt_thread_mutex_lock( &authzid_mutex );
+	ac = authzid_conn_find( c );
+	if ( ac && ac->refcnt ) ac = NULL;
+	if ( ac ) ac->refcnt++;
+	ldap_pvt_thread_mutex_unlock( &authzid_mutex );
+
+	return ac;
+}
+
+static void
+authzid_conn_release( authzid_conn_t *ac )
+{
+	ldap_pvt_thread_mutex_lock( &authzid_mutex );
+	ac->refcnt--;
+	ldap_pvt_thread_mutex_unlock( &authzid_mutex );
+}
+
+static int
+authzid_conn_insert( Connection *c, char flag )
+{
+	authzid_conn_t *ac;
+	int rc;
+
+	ldap_pvt_thread_mutex_lock( &authzid_mutex );
+	ac = authzid_conn_find( c );
+	if ( ac ) {
+		ldap_pvt_thread_mutex_unlock( &authzid_mutex );
+		return -1;
+	}
+
+	ac = ch_malloc( sizeof( authzid_conn_t ) );
+	ac->conn = c;
+	ac->refcnt = 0;
+	ac->authzid_flag = flag;
+	rc = ldap_avl_insert( &authzid_tree, (caddr_t)ac,
+		authzid_conn_cmp, authzid_conn_dup );
+	ldap_pvt_thread_mutex_unlock( &authzid_mutex );
+
+	return rc;
+}
+
+static int
+authzid_conn_remove( Connection *c )
+{
+	authzid_conn_t *ac, *tmp;
+
+	ldap_pvt_thread_mutex_lock( &authzid_mutex );
+	ac = authzid_conn_find( c );
+	if ( !ac ) {
+		ldap_pvt_thread_mutex_unlock( &authzid_mutex );
+		return -1;
+	}
+	tmp = ldap_avl_delete( &authzid_tree, (caddr_t)ac, authzid_conn_cmp );
+	ldap_pvt_thread_mutex_unlock( &authzid_mutex );
+
+	assert( tmp == ac );
+	ch_free( ac );
+
+	return 0;
+}
+
+static int
+authzid_response(
+	Operation *op,
+	SlapReply *rs )
+{
+	LDAPControl **ctrls;
+	struct berval edn = BER_BVNULL;
+	ber_len_t len = 0;
+	int n = 0;
+
+	assert( rs->sr_tag = LDAP_RES_BIND );
+
+	if ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS ) {
+		authzid_conn_t *ac = op->o_controls[ authzid_cid ];
+		if ( ac ) {
+			authzid_conn_release( ac );
+		} else {
+			(void)authzid_conn_insert( op->o_conn, op->o_ctrlflag[ authzid_cid ] );
+		}
+		return SLAP_CB_CONTINUE;
+	}
+
+	(void)authzid_conn_remove( op->o_conn );
+
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	if ( !BER_BVISEMPTY( &op->orb_edn ) ) {
+		edn = op->orb_edn;
+
+	} else if ( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
+		edn = op->o_conn->c_dn;
+	}
+
+	if ( !BER_BVISEMPTY( &edn ) ) {
+		ber_tag_t save_tag = op->o_tag;
+		struct berval save_dn = op->o_dn;
+		struct berval save_ndn = op->o_ndn;
+		int rc;
+
+		/* pretend it's an extop without data,
+		 * so it is treated as a generic write
+		 */
+		op->o_tag = LDAP_REQ_EXTENDED;
+		op->o_dn = edn;
+		op->o_ndn = edn;
+		rc = backend_check_restrictions( op, rs, NULL );
+		op->o_tag = save_tag;
+		op->o_dn = save_dn;
+		op->o_ndn = save_ndn;
+		if ( rc != LDAP_SUCCESS ) {
+			rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
+			return SLAP_CB_CONTINUE;
+		}
+
+		len = STRLENOF("dn:") + edn.bv_len;
+	}
+
+	/* save original controls in sc_private;
+	 * will be restored by sc_cleanup
+	 */
+	if ( rs->sr_ctrls != NULL ) {
+		op->o_callback->sc_private = rs->sr_ctrls;
+		for ( ; rs->sr_ctrls[n] != NULL; n++ )
+			;
+	}
+
+	ctrls = op->o_tmpalloc( sizeof( LDAPControl * )*( n + 2 ), op->o_tmpmemctx );
+	n = 0;
+	if ( rs->sr_ctrls ) {
+		for ( ; rs->sr_ctrls[n] != NULL; n++ ) {
+			ctrls[n] = rs->sr_ctrls[n];
+		}
+	}
+
+	/* anonymous: "", otherwise "dn:<dn>" */
+	ctrls[n] = op->o_tmpalloc( sizeof( LDAPControl ) + len + 1, op->o_tmpmemctx );
+	ctrls[n]->ldctl_oid = LDAP_CONTROL_AUTHZID_RESPONSE;
+	ctrls[n]->ldctl_iscritical = 0;
+	ctrls[n]->ldctl_value.bv_len = len;
+	ctrls[n]->ldctl_value.bv_val = (char *)&ctrls[n][1];
+	if ( len ) {
+		char *ptr;
+
+		ptr = lutil_strcopy( ctrls[n]->ldctl_value.bv_val, "dn:" );
+		ptr = lutil_strncopy( ptr, edn.bv_val, edn.bv_len );
+	}
+	ctrls[n]->ldctl_value.bv_val[len] = '\0';
+	ctrls[n + 1] = NULL;
+
+	rs->sr_ctrls = ctrls;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+authzid_cleanup(
+	Operation *op,
+	SlapReply *rs )
+{
+	if ( rs->sr_ctrls ) {
+		LDAPControl *ctrl;
+
+		/* if ours, cleanup */
+		ctrl = ldap_control_find( LDAP_CONTROL_AUTHZID_RESPONSE, rs->sr_ctrls, NULL );
+		if ( ctrl ) {
+			op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
+			rs->sr_ctrls = NULL;
+		}
+
+		if ( op->o_callback->sc_private != NULL ) {
+			rs->sr_ctrls = (LDAPControl **)op->o_callback->sc_private;
+			op->o_callback->sc_private = NULL;
+		}
+	}
+
+	op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
+	op->o_callback = NULL;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+authzid_op_bind(
+	Operation *op,
+	SlapReply *rs )
+{
+	slap_callback *sc;
+
+	if ( op->o_ctrlflag[ authzid_cid ] <= SLAP_CONTROL_IGNORED ) {
+		authzid_conn_t *ac = authzid_conn_get( op->o_conn );
+		if ( ac ) {
+			op->o_ctrlflag[ authzid_cid ] = ac->authzid_flag;
+			op->o_controls[ authzid_cid] = ac;
+		}
+	}
+
+	if ( op->o_ctrlflag[ authzid_cid ] > SLAP_CONTROL_IGNORED ) {
+		sc = op->o_callback;
+		op->o_callback = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
+		op->o_callback->sc_response = authzid_response;
+		op->o_callback->sc_cleanup = authzid_cleanup;
+		op->o_callback->sc_private = NULL;
+		op->o_callback->sc_writewait = NULL;
+		op->o_callback->sc_next = sc;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+parse_authzid_ctrl(
+	Operation	*op,
+	SlapReply	*rs,
+	LDAPControl	*ctrl )
+{
+	if ( op->o_ctrlflag[ authzid_cid ] != SLAP_CONTROL_NONE ) {
+		rs->sr_text = "authzid control specified multiple times";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
+		rs->sr_text = "authzid control value not absent";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	/* drop ongoing requests */
+	(void)authzid_conn_remove( op->o_conn );
+
+	op->o_ctrlflag[ authzid_cid ] = ctrl->ldctl_iscritical ?  SLAP_CONTROL_CRITICAL : SLAP_CONTROL_NONCRITICAL;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+authzid_db_init( BackendDB *be, ConfigReply *cr )
+{
+	if ( !SLAP_ISGLOBALOVERLAY( be ) ) {
+		/* do not allow slapo-ppolicy to be global by now (ITS#5858) */
+		if ( cr ) {
+			snprintf( cr->msg, sizeof(cr->msg), 
+				"slapo-authzid must be global" );
+			Debug( LDAP_DEBUG_ANY, "%s\n", cr->msg );
+		}
+		return 1;
+	}
+		
+	int rc;
+
+	rc = register_supported_control( LDAP_CONTROL_AUTHZID_REQUEST,
+		SLAP_CTRL_GLOBAL|SLAP_CTRL_BIND|SLAP_CTRL_HIDE, NULL,
+		parse_authzid_ctrl, &authzid_cid );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY,
+			"authzid_initialize: Failed to register control '%s' (%d)\n",
+			LDAP_CONTROL_AUTHZID_REQUEST, rc );
+		return rc;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Almost pointless, by now, since this overlay needs to be global,
+ * and global overlays deletion is not supported yet.
+ */
+static int
+authzid_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+#ifdef SLAP_CONFIG_DELETE
+	overlay_unregister_control( be, LDAP_CONTROL_AUTHZID_REQUEST );
+#endif /* SLAP_CONFIG_DELETE */
+
+	unregister_supported_control( LDAP_CONTROL_AUTHZID_REQUEST );
+
+	return 0;
+}
+
+static int
+authzid_initialize( void )
+{
+	ldap_pvt_thread_mutex_init( &authzid_mutex );
+
+	authzid.on_bi.bi_type = "authzid";
+
+	authzid.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	authzid.on_bi.bi_db_init = authzid_db_init;
+	authzid.on_bi.bi_db_destroy = authzid_db_destroy;
+	authzid.on_bi.bi_op_bind = authzid_op_bind;
+
+	return overlay_register( &authzid );
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	return authzid_initialize();
+}
+
diff --git a/contrib/slapd-modules/autogroup/Makefile b/contrib/slapd-modules/autogroup/Makefile
new file mode 100644
index 0000000..7dd6613
--- /dev/null
+++ b/contrib/slapd-modules/autogroup/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = autogroup.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+autogroup.la: autogroup.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/autogroup/README b/contrib/slapd-modules/autogroup/README
new file mode 100644
index 0000000..b68dd75
--- /dev/null
+++ b/contrib/slapd-modules/autogroup/README
@@ -0,0 +1,120 @@
+autogroup overlay Readme
+
+DESCRIPTION
+    The autogroup overlay allows automated updates of group memberships which
+    meet the requirements of any filter contained in the group definition.
+    The filters are built from LDAP URI-valued attributes. Any time an object
+    is added/deleted/updated, it is tested for compliance with the filters,
+    and its membership is accordingly updated. For searches and compares
+    it behaves like a static group.
+    If the attribute part of the URI is filled, the group entry is populated
+    by the values of this attribute in the entries resulting from the search.
+
+BUILDING
+    A Makefile is included.
+
+CONFIGURATION
+    # dyngroup.schema:
+        The dyngroup schema must be modified, adding the 'member' attribute
+        to the MAY clause of the groupOfURLs object class, i.e.:
+
+        objectClass ( NetscapeLDAPobjectClass:33
+        NAME 'groupOfURLs'
+        SUP top STRUCTURAL
+        MUST cn
+        MAY ( memberURL $ businessCategory $ description $ o $ ou $
+                owner $ seeAlso $ member) )
+
+
+    # slapd.conf:
+
+    moduleload /path/to/autogroup.so
+        Loads the overlay (OpenLDAP must be built with --enable-modules).
+
+    overlay autogroup
+        This directive adds the autogroup overlay to the current database.
+
+    autogroup-attrset <group-oc> <URL-ad> <member-ad>
+        This configuration option is defined for the autogroup overlay.
+        It may have multiple occurrences, and it must appear after the
+        overlay directive.
+
+        The value <group-oc> is the name of the objectClass that represents 
+        the group.
+
+        The value <URL-ad> is the name of the attributeDescription that 
+        contains the URI that is converted to the filters. If no URI is 
+        present, there will be no members in that group. It must be a subtype
+        of labeledURI.
+
+        The value <member-ad> is the name of the attributeDescription that
+        specifies the member attribute. User modification of this attribute 
+        is disabled for consistency.
+
+    autogroup-memberof-ad <memberof-ad>
+        This configuration option is defined for the autogroup overlay.
+
+        It defines the attribute that is used by the memberOf overlay
+        to store the names of groups that an entry is member of; it must be
+        DN-valued. It should be set to the same value as
+        memberof-memberof-ad. It defaults to 'memberOf'.
+
+
+EXAMPLE
+    ### slapd.conf
+    include /path/to/dyngroup.schema
+    # ...
+    moduleload /path/to/autogroup.so
+    # ...
+
+    database <database>
+    # ...
+
+    overlay autogroup
+    autogroup-attrset groupOfURLs memberURL member
+    ### end slapd.conf
+
+    ### slapd.conf
+    include /path/to/dyngroup.schema
+    # ...
+    moduleload /path/to/autogroup.so
+    moduleload /path/to/memberof.so
+    # ...
+
+    database <database>
+    #...
+
+    overlay memberof
+    memberof-memberof-ad foo
+
+    overlay autogroup
+    autogroup-attrset groupOfURLs memberURL member
+    autogroup-memberof-ad foo
+    ### end slapd.conf
+
+CAVEATS
+    As with static groups, update operations on groups with a large number
+    of members may be slow.
+    If the attribute part of the URI is specified, modify and delete operations
+    are more difficult to handle. In these cases the overlay will try to detect
+    if groups have been modified and then simply refresh them. This can cause
+    performance hits if the search specified by the URI deals with a significant
+    number of entries.
+
+ACKNOWLEDGEMENTS
+    This module was originally written in 2007 by Michał Szulczyński. Further
+	enhancements were contributed by Howard Chu, Raphael Ouazana,
+	Norbert Pueschel, and Christian Manal.
+
+---
+Copyright 1998-2022 The OpenLDAP Foundation.
+Portions Copyright (C) 2007 Michał Szulczyński.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+http://www.OpenLDAP.org/license.html.
diff --git a/contrib/slapd-modules/autogroup/autogroup.c b/contrib/slapd-modules/autogroup/autogroup.c
new file mode 100644
index 0000000..cbcedfe
--- /dev/null
+++ b/contrib/slapd-modules/autogroup/autogroup.c
@@ -0,0 +1,2236 @@
+/* autogroup.c - automatic group overlay */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2007-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2007 Michał Szulczyński.
+ * Portions Copyright 2009 Howard Chu.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Michał Szulczyński for inclusion in
+ * OpenLDAP Software.  Additional significant contributors include:
+ *   Howard Chu
+ *   Raphael Ouazana
+ *   Norbert Pueschel
+ *   Christian Manal
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#ifndef SLAPD_MEMBEROF_ATTR
+#define	SLAPD_MEMBEROF_ATTR	"memberOf"
+#endif
+
+static slap_overinst	autogroup;
+
+/* Filter represents the memberURL of a group. */
+typedef struct autogroup_filter_t {
+	struct berval			agf_dn;	/* The base DN in memberURL */
+	struct berval			agf_ndn;
+	struct berval			agf_filterstr;
+	Filter				*agf_filter;
+	int				agf_scope;
+	AttributeName			*agf_anlist;
+	struct autogroup_filter_t	*agf_next;
+} autogroup_filter_t;
+
+/* Description of group attributes. */
+typedef struct autogroup_def_t {
+	ObjectClass		*agd_oc;
+	AttributeDescription	*agd_member_url_ad;
+	AttributeDescription	*agd_member_ad;
+	struct autogroup_def_t	*agd_next;
+} autogroup_def_t;
+
+/* Represents the group entry. */
+typedef struct autogroup_entry_t {
+	BerValue		age_dn;
+	BerValue		age_ndn;
+	autogroup_filter_t	*age_filter; /* List of filters made from memberURLs */
+	autogroup_def_t		*age_def; /* Attribute definition */
+	ldap_pvt_thread_mutex_t age_mutex;
+	int			age_mustrefresh; /* Defined in request to refresh in response */
+	int			age_modrdn_olddnmodified; /* Defined in request to refresh in response */
+	struct autogroup_entry_t	*age_next;
+} autogroup_entry_t;
+
+/* Holds pointers to attribute definitions and groups. */
+typedef struct autogroup_info_t {
+	autogroup_def_t		*agi_def;	/* Group attributes definitions. */
+	autogroup_entry_t	*agi_entry;	/* Group entries.  */
+	AttributeDescription	*agi_memberof_ad;	/* memberOf attribute description  */
+	ldap_pvt_thread_mutex_t agi_mutex;
+} autogroup_info_t;
+
+/* Search callback for adding groups initially. */
+typedef struct autogroup_sc_t {
+	autogroup_info_t		*ags_info;	/* Group definitions and entries.  */
+	autogroup_def_t		*ags_def;	/* Attributes definition of the group being added. */
+} autogroup_sc_t;
+
+/* Used for adding members, found when searching, to a group. */
+typedef struct autogroup_ga_t {
+	autogroup_entry_t	*agg_group;	/* The group to which the members will be added. */
+	autogroup_filter_t	*agg_filter;	/* Current filter */
+	Entry			*agg_entry;	/* Used in autogroup_member_search_cb to modify 
+						this entry with the search results. */
+
+	Modifications		*agg_mod;	/* Used in autogroup_member_search_modify_cb to hold the 
+						search results which will be added to the group. */
+
+	Modifications		*agg_mod_last; /* Used in autogroup_member_search_modify_cb so we don't 
+						have to search for the last mod added. */
+} autogroup_ga_t;
+
+
+/* 
+**	dn, ndn	- the DN of the member to add
+**	age	- the group to which the member DN will be added
+*/
+static int
+autogroup_add_member_to_group( Operation *op, BerValue *dn, BerValue *ndn, autogroup_entry_t *age )
+{
+	slap_overinst	*on = (slap_overinst *)op->o_bd->bd_info;
+	Modifications	*modlist = (Modifications *)ch_calloc( 1, sizeof( Modifications ) );
+	SlapReply	sreply = {REP_RESULT};
+	BerValue	*vals, *nvals;
+	slap_callback	cb = { NULL, slap_null_cb, NULL, NULL };
+	Operation	o = *op;
+	unsigned long opid = op->o_opid;
+	OpExtra oex;
+
+	assert( dn != NULL );
+	assert( ndn != NULL );
+	Debug(LDAP_DEBUG_TRACE, "==> autogroup_add_member_to_group adding <%s> to <%s>\n",
+		dn->bv_val, age->age_dn.bv_val );
+
+	vals = (BerValue *)ch_calloc( 2, sizeof( BerValue ) );
+	nvals = (BerValue *)ch_calloc( 2, sizeof( BerValue ) );
+	ber_dupbv( vals, dn );
+	BER_BVZERO( &vals[ 1 ] );
+	ber_dupbv( nvals, ndn );
+	BER_BVZERO( &nvals[ 1 ] );
+
+	modlist->sml_op = LDAP_MOD_ADD;
+	modlist->sml_desc = age->age_def->agd_member_ad;
+	modlist->sml_type = age->age_def->agd_member_ad->ad_cname;
+	modlist->sml_values = vals;
+	modlist->sml_nvalues = nvals;
+	modlist->sml_numvals = 1;
+	modlist->sml_flags = SLAP_MOD_INTERNAL;
+	modlist->sml_next = NULL;
+
+	o.o_opid = 0;	/* shared with op, saved above */
+	o.o_tag = LDAP_REQ_MODIFY;
+	o.o_callback = &cb;
+	o.orm_modlist = modlist;
+	o.o_dn = op->o_bd->be_rootdn;
+	o.o_ndn = op->o_bd->be_rootndn;
+	o.o_req_dn = age->age_dn;
+	o.o_req_ndn = age->age_ndn;
+	o.o_permissive_modify = 1;
+	o.o_dont_replicate = 1;
+	o.orm_no_opattrs = 1;
+	o.o_managedsait = SLAP_CONTROL_CRITICAL;
+	o.o_relax = SLAP_CONTROL_CRITICAL;
+
+	oex.oe_key = (void *)&autogroup;
+	LDAP_SLIST_INSERT_HEAD( &o.o_extra, &oex, oe_next );
+
+	o.o_bd->bd_info = (BackendInfo *)on->on_info;
+	(void)op->o_bd->be_modify( &o, &sreply );
+	o.o_bd->bd_info = (BackendInfo *)on;
+
+	LDAP_SLIST_REMOVE( &o.o_extra, &oex, OpExtra, oe_next );
+
+	slap_mods_free( modlist, 1 );
+	op->o_opid = opid;
+
+	return sreply.sr_err;
+}
+
+/* 
+**	e	- the entry where to get the attribute values
+**	age	- the group to which the values will be added
+*/
+static int
+autogroup_add_member_values_to_group( Operation *op, struct berval *dn, autogroup_entry_t *age, Attribute *attr )
+{
+	slap_overinst	*on = (slap_overinst *)op->o_bd->bd_info;
+	Modifications	modlist;
+	SlapReply	sreply = {REP_RESULT};
+	slap_callback	cb = { NULL, slap_null_cb, NULL, NULL };
+	Operation	o = *op;
+	unsigned long opid = op->o_opid;
+	OpExtra oex;
+
+	Debug(LDAP_DEBUG_TRACE, "==> autogroup_add_member_values_to_group adding <%s> to <%s>\n",
+		dn->bv_val, age->age_dn.bv_val );
+
+	modlist.sml_op = LDAP_MOD_ADD;
+	modlist.sml_desc = age->age_def->agd_member_ad;
+	modlist.sml_type = age->age_def->agd_member_ad->ad_cname;
+	modlist.sml_values = attr->a_vals;
+	modlist.sml_nvalues = attr->a_nvals;
+	modlist.sml_numvals = attr->a_numvals;
+	modlist.sml_flags = SLAP_MOD_INTERNAL;
+	modlist.sml_next = NULL;
+
+	o.o_opid = 0;
+	o.o_tag = LDAP_REQ_MODIFY;
+	o.o_callback = &cb;
+	o.orm_modlist = &modlist;
+	o.o_dn = op->o_bd->be_rootdn;
+	o.o_ndn = op->o_bd->be_rootndn;
+	o.o_req_dn = age->age_dn;
+	o.o_req_ndn = age->age_ndn;
+	o.o_permissive_modify = 1;
+	o.o_dont_replicate = 1;
+	o.orm_no_opattrs = 1;
+	o.o_managedsait = SLAP_CONTROL_CRITICAL;
+	o.o_relax = SLAP_CONTROL_CRITICAL;
+
+	oex.oe_key = (void *)&autogroup;
+	LDAP_SLIST_INSERT_HEAD( &o.o_extra, &oex, oe_next );
+
+	o.o_bd->bd_info = (BackendInfo *)on->on_info;
+	(void)op->o_bd->be_modify( &o, &sreply );
+	o.o_bd->bd_info = (BackendInfo *)on;
+	op->o_opid = opid;
+	LDAP_SLIST_REMOVE( &o.o_extra, &oex, OpExtra, oe_next );
+
+	return sreply.sr_err;
+}
+
+/*
+** dn,ndn	- the DN to be deleted
+** age		- the group from which the DN will be deleted
+** If we pass a NULL dn and ndn, all members are deleted from the group. 
+*/
+static int
+autogroup_delete_member_from_group( Operation *op, BerValue *dn, BerValue *ndn, autogroup_entry_t *age )
+{
+	slap_overinst	*on = (slap_overinst *)op->o_bd->bd_info;
+	Modifications	*modlist = (Modifications *)ch_calloc( 1, sizeof( Modifications ) );
+	SlapReply	sreply = {REP_RESULT};
+	BerValue	*vals, *nvals;
+	slap_callback	cb = { NULL, slap_null_cb, NULL, NULL };
+	Operation	o = *op;
+	unsigned long opid = op->o_opid;
+	OpExtra oex;
+
+	if ( dn == NULL || ndn == NULL ) {
+		Debug(LDAP_DEBUG_TRACE, "==> autogroup_delete_member_from_group removing all members from <%s>\n",
+			age->age_dn.bv_val );
+
+		modlist->sml_values = NULL;
+		modlist->sml_nvalues = NULL;
+		modlist->sml_numvals = 0;
+	} else {
+		Debug(LDAP_DEBUG_TRACE, "==> autogroup_delete_member_from_group removing <%s> from <%s>\n",
+			dn->bv_val, age->age_dn.bv_val );
+
+		vals = (BerValue *)ch_calloc( 2, sizeof( BerValue ) );
+		nvals = (BerValue *)ch_calloc( 2, sizeof( BerValue ) );
+		ber_dupbv( vals, dn );
+		BER_BVZERO( &vals[ 1 ] );
+		ber_dupbv( nvals, ndn );
+		BER_BVZERO( &nvals[ 1 ] );
+
+		modlist->sml_values = vals;
+		modlist->sml_nvalues = nvals;
+		modlist->sml_numvals = 1;
+	}
+
+
+	modlist->sml_op = LDAP_MOD_DELETE;
+	modlist->sml_desc = age->age_def->agd_member_ad;
+	modlist->sml_type = age->age_def->agd_member_ad->ad_cname;
+	modlist->sml_flags = SLAP_MOD_INTERNAL;
+	modlist->sml_next = NULL;
+
+	o.o_opid = 0;
+	o.o_callback = &cb;
+	o.o_tag = LDAP_REQ_MODIFY;
+	o.orm_modlist = modlist;
+	o.o_dn = op->o_bd->be_rootdn;
+	o.o_ndn = op->o_bd->be_rootndn;
+	o.o_req_dn = age->age_dn;
+	o.o_req_ndn = age->age_ndn;
+	o.o_relax = SLAP_CONTROL_CRITICAL;
+	o.o_managedsait = SLAP_CONTROL_CRITICAL;
+	o.o_permissive_modify = 1;
+	o.o_dont_replicate = 1;
+	o.orm_no_opattrs = 1;
+
+	oex.oe_key = (void *)&autogroup;
+	LDAP_SLIST_INSERT_HEAD( &o.o_extra, &oex, oe_next );
+
+	o.o_bd->bd_info = (BackendInfo *)on->on_info;
+	(void)op->o_bd->be_modify( &o, &sreply );
+	o.o_bd->bd_info = (BackendInfo *)on;
+
+	LDAP_SLIST_REMOVE( &o.o_extra, &oex, OpExtra, oe_next );
+
+	slap_mods_free( modlist, 1 );
+
+	op->o_opid = opid;
+	return sreply.sr_err;
+}
+
+/*
+**      e       - the entry where to get the attribute values
+**      age     - the group from which the values will be deleted
+*/
+static int
+autogroup_delete_member_values_from_group( Operation *op, struct berval *dn, autogroup_entry_t *age, Attribute *attr )
+{
+        slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
+        Modifications   modlist;
+        SlapReply       sreply = {REP_RESULT};
+        slap_callback   cb = { NULL, slap_null_cb, NULL, NULL };
+        Operation       o = *op;
+	unsigned long opid = op->o_opid;
+	OpExtra oex;
+
+        Debug(LDAP_DEBUG_TRACE, "==> autogroup_delete_member_values_from_group removing <%s> from <%s>\n",
+			dn->bv_val, age->age_dn.bv_val );
+
+        modlist.sml_op = LDAP_MOD_DELETE;
+        modlist.sml_desc = age->age_def->agd_member_ad;
+        modlist.sml_type = age->age_def->agd_member_ad->ad_cname;
+        modlist.sml_values = attr->a_vals;
+        modlist.sml_nvalues = attr->a_nvals;
+        modlist.sml_numvals = attr->a_numvals;
+        modlist.sml_flags = SLAP_MOD_INTERNAL;
+        modlist.sml_next = NULL;
+
+	o.o_opid = 0;
+        o.o_tag = LDAP_REQ_MODIFY;
+        o.o_callback = &cb;
+        o.orm_modlist = &modlist;
+		o.o_dn = op->o_bd->be_rootdn;
+		o.o_ndn = op->o_bd->be_rootndn;
+        o.o_req_dn = age->age_dn;
+        o.o_req_ndn = age->age_ndn;
+        o.o_permissive_modify = 1;
+	o.o_dont_replicate = 1;
+	o.orm_no_opattrs = 1;
+        o.o_managedsait = SLAP_CONTROL_CRITICAL;
+        o.o_relax = SLAP_CONTROL_CRITICAL;
+
+	oex.oe_key = (void *)&autogroup;
+	LDAP_SLIST_INSERT_HEAD( &o.o_extra, &oex, oe_next );
+
+        o.o_bd->bd_info = (BackendInfo *)on->on_info;
+        (void)op->o_bd->be_modify( &o, &sreply );
+        o.o_bd->bd_info = (BackendInfo *)on;
+	op->o_opid = opid;
+
+	LDAP_SLIST_REMOVE( &o.o_extra, &oex, OpExtra, oe_next );
+
+        return sreply.sr_err;
+}
+
+/* 
+** Callback used to add entries to a group, 
+** which are going to be written in the database
+** (used in bi_op_add)
+** The group is passed in autogroup_ga_t->agg_group
+*/
+static int
+autogroup_member_search_cb( Operation *op, SlapReply *rs )
+{
+	assert( op->o_tag == LDAP_REQ_SEARCH );
+
+	if ( rs->sr_type == REP_SEARCH ) {
+		autogroup_ga_t		*agg = (autogroup_ga_t *)op->o_callback->sc_private;
+		autogroup_entry_t	*age = agg->agg_group;
+		autogroup_filter_t	*agf = agg->agg_filter;
+		Modification		mod;
+		const char		*text = NULL;
+		char			textbuf[1024];
+		struct berval		*vals, *nvals;
+		struct berval		lvals[ 2 ], lnvals[ 2 ];
+		int			numvals;
+
+		Debug(LDAP_DEBUG_TRACE, "==> autogroup_member_search_cb <%s>\n",
+			rs->sr_entry ? rs->sr_entry->e_name.bv_val : "UNKNOWN_DN" );
+
+		if ( agf->agf_anlist ) {
+			Attribute *attr = attrs_find( rs->sr_entry->e_attrs, agf->agf_anlist[0].an_desc );
+			if (attr) {
+				vals = attr->a_vals;
+				nvals = attr->a_nvals;
+				numvals = attr->a_numvals;
+			} else {
+				// Nothing to add
+				return 0;
+			}
+		} else {
+			lvals[ 0 ] = rs->sr_entry->e_name;
+			BER_BVZERO( &lvals[ 1 ] );
+			lnvals[ 0 ] = rs->sr_entry->e_nname;
+			BER_BVZERO( &lnvals[ 1 ] );
+			vals = lvals;
+			nvals = lnvals;
+			numvals = 1;
+		}
+
+		mod.sm_op = LDAP_MOD_ADD;
+		mod.sm_desc = age->age_def->agd_member_ad;
+		mod.sm_type = age->age_def->agd_member_ad->ad_cname;
+		mod.sm_values = vals;
+		mod.sm_nvalues = nvals;
+		mod.sm_numvals = numvals;
+
+		modify_add_values( agg->agg_entry, &mod, /* permissive */ 1, &text, textbuf, sizeof( textbuf ) );
+	}
+
+	return 0;
+}
+
+/* 
+** Callback used to add entries to a group, which is already in the database.
+** (used in on_response)
+** The group is passed in autogroup_ga_t->agg_group
+** NOTE: Very slow.
+*/
+static int
+autogroup_member_search_modify_cb( Operation *op, SlapReply *rs )
+{
+	assert( op->o_tag == LDAP_REQ_SEARCH );
+
+	if ( rs->sr_type == REP_SEARCH ) {
+		autogroup_ga_t		*agg = (autogroup_ga_t *)op->o_callback->sc_private;
+		autogroup_entry_t	*age = agg->agg_group;
+		autogroup_filter_t	*agf = agg->agg_filter;
+		Modifications		*modlist;
+		struct berval		*vals, *nvals;
+		struct berval		lvals[ 2 ], lnvals[ 2 ];
+		int			numvals;
+
+		Debug(LDAP_DEBUG_TRACE, "==> autogroup_member_search_modify_cb <%s>\n",
+			rs->sr_entry ? rs->sr_entry->e_name.bv_val : "UNKNOWN_DN" );
+
+		if ( agf->agf_anlist ) {
+			Attribute *attr = attrs_find( rs->sr_entry->e_attrs, agf->agf_anlist[0].an_desc );
+			if (attr) {
+				vals = attr->a_vals;
+				nvals = attr->a_nvals;
+				numvals = attr->a_numvals;
+			} else {
+				// Nothing to add
+				return 0;
+			}
+		} else {
+			lvals[ 0 ] = rs->sr_entry->e_name;
+			BER_BVZERO( &lvals[ 1 ] );
+			lnvals[ 0 ] = rs->sr_entry->e_nname;
+			BER_BVZERO( &lnvals[ 1 ] );
+			vals = lvals;
+			nvals = lnvals;
+			numvals = 1;
+		}
+
+		if ( numvals ) {
+			modlist = (Modifications *)ch_calloc( 1, sizeof( Modifications ) );
+
+			modlist->sml_op = LDAP_MOD_ADD;
+			modlist->sml_desc = age->age_def->agd_member_ad;
+			modlist->sml_type = age->age_def->agd_member_ad->ad_cname;
+
+			ber_bvarray_dup_x( &modlist->sml_values, vals, NULL );
+			ber_bvarray_dup_x( &modlist->sml_nvalues, nvals, NULL );
+			modlist->sml_numvals = numvals;
+
+			modlist->sml_flags = SLAP_MOD_INTERNAL;
+			modlist->sml_next = NULL;
+
+			if ( agg->agg_mod == NULL ) {
+				agg->agg_mod = modlist;
+				agg->agg_mod_last = modlist;
+			} else {
+				agg->agg_mod_last->sml_next = modlist;
+				agg->agg_mod_last = modlist;
+			}
+		}
+
+	}
+
+	return 0;
+}
+
+
+/*
+** Adds all entries matching the passed filter to the specified group.
+** If modify == 1, then we modify the group's entry in the database using be_modify.
+** If modify == 0, then, we must supply a rw entry for the group, 
+**	because we only modify the entry, without calling be_modify.
+** e	- the group entry, to which the members will be added
+** age	- the group
+** agf	- the filter
+*/
+static int
+autogroup_add_members_from_filter( Operation *op, Entry *e, autogroup_entry_t *age, autogroup_filter_t *agf, int modify)
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	Operation		o = *op;
+	SlapReply		rs = { REP_SEARCH };
+	slap_callback		cb = { 0 };
+	slap_callback		null_cb = { NULL, slap_null_cb, NULL, NULL };
+	autogroup_ga_t		agg;
+	OpExtra oex;
+
+	Debug(LDAP_DEBUG_TRACE, "==> autogroup_add_members_from_filter <%s>\n",
+		age->age_dn.bv_val );
+
+	o.ors_attrsonly = 0;
+	o.o_tag = LDAP_REQ_SEARCH;
+
+	o.o_dn = op->o_bd->be_rootdn;
+	o.o_ndn = op->o_bd->be_rootndn;
+	o.o_req_dn = agf->agf_dn;
+	o.o_req_ndn = agf->agf_ndn;
+
+	o.ors_filterstr = agf->agf_filterstr;
+	o.ors_filter = agf->agf_filter;
+
+	o.ors_scope = agf->agf_scope;
+	o.ors_deref = LDAP_DEREF_NEVER;
+	o.ors_limit = NULL;
+	o.ors_tlimit = SLAP_NO_LIMIT;
+	o.ors_slimit = SLAP_NO_LIMIT;
+	o.ors_attrs =  agf->agf_anlist ? agf->agf_anlist : slap_anlist_no_attrs;
+	o.o_do_not_cache = 1;
+
+	agg.agg_group = age;
+	agg.agg_filter = agf;
+	agg.agg_mod = NULL;
+	agg.agg_mod_last = NULL;
+	agg.agg_entry = e;
+	cb.sc_private = &agg;
+
+	if ( modify == 1 ) {
+		cb.sc_response = autogroup_member_search_modify_cb;
+	} else {
+		cb.sc_response = autogroup_member_search_cb;
+	}
+
+	cb.sc_cleanup = NULL;
+	cb.sc_next = NULL;
+
+	o.o_callback = &cb;
+
+	o.o_bd->bd_info = (BackendInfo *)on->on_info;
+	op->o_bd->be_search( &o, &rs );
+	o.o_bd->bd_info = (BackendInfo *)on;	
+
+	if ( modify == 1 && agg.agg_mod ) {
+		unsigned long opid = op->o_opid;
+
+		rs_reinit( &rs, REP_RESULT );
+
+		o = *op;
+		o.o_opid = 0;
+		o.o_callback = &null_cb;
+		o.o_tag = LDAP_REQ_MODIFY;
+		o.orm_modlist = agg.agg_mod;
+		o.o_dn = op->o_bd->be_rootdn;
+		o.o_ndn = op->o_bd->be_rootndn;
+		o.o_req_dn = age->age_dn;
+		o.o_req_ndn = age->age_ndn;
+		o.o_relax = SLAP_CONTROL_CRITICAL;
+		o.o_managedsait = SLAP_CONTROL_NONCRITICAL;
+		o.o_permissive_modify = 1;
+		o.o_dont_replicate = 1;
+		o.orm_no_opattrs = 1;
+
+	oex.oe_key = (void *)&autogroup;
+	LDAP_SLIST_INSERT_HEAD( &o.o_extra, &oex, oe_next );
+
+		o.o_bd->bd_info = (BackendInfo *)on->on_info;
+		(void)op->o_bd->be_modify( &o, &rs );
+		o.o_bd->bd_info = (BackendInfo *)on;	
+
+	LDAP_SLIST_REMOVE( &o.o_extra, &oex, OpExtra, oe_next );
+
+		slap_mods_free(agg.agg_mod, 1);
+		op->o_opid = opid;
+	}
+
+	return 0;
+}
+
+/* 
+** Adds a group to the internal list from the passed entry.
+** scan specifies whether to add all matching members to the group.
+** modify specifies whether to modify the given group entry (when modify == 0),
+**	or to modify the group entry in the database (when modify == 1 and e = NULL and ndn != NULL).
+** agi	- pointer to the groups and the attribute definitions
+** agd - the attribute definition of the added group
+** e	- the entry representing the group, can be NULL if the ndn is specified, and modify == 1
+** ndn	- the DN of the group, can be NULL if we give a non-NULL e
+*/
+static int
+autogroup_add_group( Operation *op, autogroup_info_t *agi, autogroup_def_t *agd, Entry *e, BerValue *ndn, int scan, int modify)
+{
+	autogroup_entry_t	**agep = &agi->agi_entry;
+	autogroup_filter_t	*agf, *agf_prev = NULL;
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	LDAPURLDesc		*lud = NULL;
+	Attribute		*a;
+	BerValue		*bv, dn;
+	int			rc = 0, match = 1, null_entry = 0;
+
+	if ( e == NULL ) {
+		if ( overlay_entry_get_ov( op, ndn, NULL, NULL, 0, &e, on ) !=
+			LDAP_SUCCESS || e == NULL ) {
+			Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: cannot get entry for <%s>\n", ndn->bv_val );
+			return 1;
+		}
+
+		null_entry = 1;
+	}
+
+	Debug(LDAP_DEBUG_TRACE, "==> autogroup_add_group <%s>\n",
+		e->e_name.bv_val );
+
+	if ( agi->agi_entry != NULL ) {
+		for ( ; *agep ; agep = &(*agep)->age_next ) {
+			dnMatch( &match, 0, NULL, NULL, &e->e_nname, &(*agep)->age_ndn );
+			if ( match == 0 ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: group already exists: <%s>\n", e->e_name.bv_val );
+				return 1;
+			}
+			/* goto last */;
+		}
+	}
+
+
+	*agep = (autogroup_entry_t *)ch_calloc( 1, sizeof( autogroup_entry_t ) );
+	ldap_pvt_thread_mutex_init( &(*agep)->age_mutex );
+	(*agep)->age_def = agd;
+	(*agep)->age_filter = NULL;
+	(*agep)->age_mustrefresh = 0;
+	(*agep)->age_modrdn_olddnmodified = 0;
+
+	ber_dupbv( &(*agep)->age_dn, &e->e_name );
+	ber_dupbv( &(*agep)->age_ndn, &e->e_nname );
+
+	a = attrs_find( e->e_attrs, agd->agd_member_url_ad );
+
+	if ( null_entry == 1 ) {
+		a = attrs_dup( a );
+		overlay_entry_release_ov( op, e, 0, on );
+	}
+
+	if( a == NULL ) {
+		Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: group has no memberURL\n" );
+	} else {
+		for ( bv = a->a_nvals; !BER_BVISNULL( bv ); bv++ ) {
+
+			agf = (autogroup_filter_t*)ch_calloc( 1, sizeof( autogroup_filter_t ) );
+
+			if ( ldap_url_parse( bv->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: cannot parse url <%s>\n", bv->bv_val );
+				/* FIXME: error? */
+				ch_free( agf ); 
+				continue;
+			}
+
+			agf->agf_scope = lud->lud_scope;
+
+			if ( lud->lud_dn == NULL ) {
+				BER_BVSTR( &dn, "" );
+			} else {
+				ber_str2bv( lud->lud_dn, 0, 0, &dn );
+			}
+
+			rc = dnPrettyNormal( NULL, &dn, &agf->agf_dn, &agf->agf_ndn, NULL );
+			if ( rc != LDAP_SUCCESS ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: cannot normalize DN <%s>\n", dn.bv_val );
+				/* FIXME: error? */
+				goto cleanup;
+			}
+
+			if ( lud->lud_filter != NULL ) {
+				ber_str2bv( lud->lud_filter, 0, 1, &agf->agf_filterstr);
+				agf->agf_filter = str2filter( lud->lud_filter );
+			} else {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: URL filter is missing <%s>\n", bv->bv_val );
+				/* FIXME: error? */
+				goto cleanup;
+			}
+
+			if ( lud->lud_attrs != NULL ) {
+				int i;
+
+				for ( i=0 ; lud->lud_attrs[i]!=NULL ; i++) {
+					/* Just counting */;
+				}
+
+				if ( i > 1 ) {
+					Debug( LDAP_DEBUG_ANY, "autogroup_add_group: too many attributes specified in url <%s>\n",
+						bv->bv_val );
+					/* FIXME: error? */
+					filter_free( agf->agf_filter );
+					ch_free( agf->agf_filterstr.bv_val );
+					ch_free( agf->agf_dn.bv_val );
+					ch_free( agf->agf_ndn.bv_val );
+					ldap_free_urldesc( lud );
+					ch_free( agf );
+					continue;
+				}
+
+				agf->agf_anlist = str2anlist( NULL, lud->lud_attrs[0], "," );
+
+				if ( agf->agf_anlist == NULL ) {
+					Debug( LDAP_DEBUG_ANY, "autogroup_add_group: unable to find AttributeDescription \"%s\".\n",
+						lud->lud_attrs[0] );
+					/* FIXME: error? */
+					filter_free( agf->agf_filter );
+					ch_free( agf->agf_filterstr.bv_val );
+					ch_free( agf->agf_dn.bv_val );
+					ch_free( agf->agf_ndn.bv_val );
+					ldap_free_urldesc( lud );
+					ch_free( agf );
+					continue;
+				}
+			}
+
+			agf->agf_next = NULL;
+
+			if( (*agep)->age_filter == NULL ) {
+				(*agep)->age_filter = agf;
+			}
+
+			if( agf_prev != NULL ) {
+				agf_prev->agf_next = agf;
+			}
+
+			agf_prev = agf;
+
+			if ( scan == 1 ){
+				autogroup_add_members_from_filter( op, e, (*agep), agf, modify );
+			}
+
+			Debug( LDAP_DEBUG_TRACE, "autogroup_add_group: added memberURL DN <%s> with filter <%s>\n",
+				agf->agf_ndn.bv_val, agf->agf_filterstr.bv_val );
+
+			ldap_free_urldesc( lud );
+
+			continue;
+
+
+cleanup:;
+
+			ch_free( agf->agf_ndn.bv_val );
+			ch_free( agf->agf_dn.bv_val );
+			ldap_free_urldesc( lud );				
+			ch_free( agf ); 
+		}
+	}
+
+	if ( null_entry == 1 ) {
+		attrs_free( a );
+	}
+	return rc;
+}
+
+/* 
+** Used when opening the database to add all existing 
+** groups from the database to our internal list.
+*/
+static int
+autogroup_group_add_cb( Operation *op, SlapReply *rs )
+{
+	assert( op->o_tag == LDAP_REQ_SEARCH );
+
+	if ( rs->sr_type == REP_SEARCH ) {
+		autogroup_sc_t		*ags = (autogroup_sc_t *)op->o_callback->sc_private;
+
+		Debug(LDAP_DEBUG_TRACE, "==> autogroup_group_add_cb <%s>\n",
+			rs->sr_entry ? rs->sr_entry->e_name.bv_val : "UNKNOWN_DN" );
+
+		autogroup_add_group( op, ags->ags_info, ags->ags_def, rs->sr_entry, NULL, 0, 0);
+	}
+
+	return 0;
+}
+
+typedef struct ag_addinfo {
+	slap_overinst *on;
+	Entry *e;
+	autogroup_def_t		*agd;
+} ag_addinfo;
+
+static int
+autogroup_add_entry_cb( Operation *op, SlapReply *rs )
+{
+	slap_callback *sc = op->o_callback;
+	ag_addinfo *aa = sc->sc_private;
+	slap_overinst *on = aa->on;
+	autogroup_info_t	*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	BackendInfo *bi = op->o_bd->bd_info;
+
+	if ( rs->sr_err != LDAP_SUCCESS )
+		goto done;
+
+	op->o_bd->bd_info = (BackendInfo *)on;
+	ldap_pvt_thread_mutex_lock( &agi->agi_mutex );
+	if ( aa->agd ) {
+		autogroup_add_group( op, agi, aa->agd, aa->e, NULL, 1 , 0);
+	} else {
+		autogroup_entry_t	*age;
+		autogroup_filter_t	*agf;
+		struct berval odn, ondn;
+		int rc;
+
+		/* must use rootdn when calling test_filter */
+		odn = op->o_dn;
+		ondn = op->o_ndn;
+		op->o_dn = op->o_bd->be_rootdn;
+		op->o_ndn = op->o_bd->be_rootndn;
+
+		for ( age = agi->agi_entry; age ; age = age->age_next ) {
+			ldap_pvt_thread_mutex_lock( &age->age_mutex );
+
+			/* Check if any of the filters are the suffix to the entry DN.
+			   If yes, we can test that filter against the entry. */
+
+			for ( agf = age->age_filter; agf ; agf = agf->agf_next ) {
+				if ( dnIsSuffix( &op->o_req_ndn, &agf->agf_ndn ) ) {
+					rc = test_filter( op, aa->e, agf->agf_filter );
+					if ( rc == LDAP_COMPARE_TRUE ) {
+						if ( agf->agf_anlist ) {
+							Attribute *a = attr_find( aa->e->e_attrs, agf->agf_anlist[0].an_desc );
+							if ( a )
+								autogroup_add_member_values_to_group( op, &op->o_req_dn, age, a );
+						} else {
+							autogroup_add_member_to_group( op, &aa->e->e_name, &aa->e->e_nname, age );
+						}
+						break;
+					}
+				}
+			}
+			ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+		}
+		op->o_dn = odn;
+		op->o_ndn = ondn;
+	}
+	ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+
+	op->o_bd->bd_info = bi;
+
+done:
+	op->o_callback = sc->sc_next;
+	op->o_tmpfree( sc, op->o_tmpmemctx );
+
+	return SLAP_CB_CONTINUE;
+}
+
+/*
+** When adding a group, we first strip any existing members,
+** and add all which match the filters ourselves.
+*/
+static int
+autogroup_add_entry( Operation *op, SlapReply *rs)
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	autogroup_info_t	*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	autogroup_def_t		*agd = agi->agi_def;
+	slap_callback	*sc = NULL;
+	ag_addinfo	*aa = NULL;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_add_entry <%s>\n", 
+		op->ora_e->e_name.bv_val );
+
+	sc = op->o_tmpcalloc( sizeof(slap_callback) + sizeof(ag_addinfo), 1, op->o_tmpmemctx );
+	sc->sc_private = (sc+1);
+	sc->sc_response = autogroup_add_entry_cb;
+	aa = sc->sc_private;
+	aa->on = on;
+	aa->e = op->ora_e;
+	sc->sc_next = op->o_callback;
+	op->o_callback = sc;
+
+	/* Check if it's a group. */
+	for ( ; agd ; agd = agd->agd_next ) {
+		if ( is_entry_objectclass_or_sub( op->ora_e, agd->agd_oc ) ) {
+			Modification		mod;
+			const char		*text = NULL;
+			char			textbuf[1024];
+
+			mod.sm_op = LDAP_MOD_DELETE;
+			mod.sm_desc = agd->agd_member_ad;
+			mod.sm_type = agd->agd_member_ad->ad_cname;
+			mod.sm_values = NULL;
+			mod.sm_nvalues = NULL;
+
+			/* We don't want any member attributes added by the user. */
+			modify_delete_values( op->ora_e, &mod, /* permissive */ 1, &text, textbuf, sizeof( textbuf ) );
+
+			aa->agd = agd;
+
+			break;
+		}
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+/*
+** agi	- internal group and attribute definitions list
+** e	- the group to remove from the internal list
+*/
+static int
+autogroup_delete_group( autogroup_info_t *agi, autogroup_entry_t *e )
+{
+	autogroup_entry_t	*age = agi->agi_entry,
+				*age_prev = NULL,
+				*age_next;
+	int			rc = 1;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_delete_group <%s>\n", 
+		age->age_dn.bv_val );
+
+	for ( age_next = age ; age_next ; age_prev = age, age = age_next ) {
+		age_next = age->age_next;
+
+		if ( age == e ) {
+			autogroup_filter_t	*agf = age->age_filter,
+							*agf_next;
+
+			if ( age_prev != NULL ) {
+				age_prev->age_next = age_next;
+			} else {
+				agi->agi_entry = NULL;
+			}
+
+			ch_free( age->age_dn.bv_val );
+			ch_free( age->age_ndn.bv_val );
+
+			for( agf_next = agf ; agf_next ; agf = agf_next ){
+				agf_next = agf->agf_next;
+
+				filter_free( agf->agf_filter );
+				ch_free( agf->agf_filterstr.bv_val );
+				ch_free( agf->agf_dn.bv_val );
+				ch_free( agf->agf_ndn.bv_val );
+				anlist_free( agf->agf_anlist, 1, NULL );
+				ch_free( agf );
+			}
+
+			ldap_pvt_thread_mutex_unlock( &age->age_mutex );		
+			ldap_pvt_thread_mutex_destroy( &age->age_mutex );
+			ch_free( age );
+
+			rc = 0;	
+			return rc;
+
+		}
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "autogroup_delete_group: group <%s> not found, should not happen\n", age->age_dn.bv_val );
+
+	return rc;
+
+}
+
+static int
+autogroup_delete_entry( Operation *op, SlapReply *rs)
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	autogroup_info_t	*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	autogroup_entry_t	*age, *age_prev, *age_next;
+	autogroup_filter_t	*agf;
+	Entry			*e;
+	int			matched_group = 0, rc = 0;
+	struct berval odn, ondn;
+	OpExtra *oex;
+
+	LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
+		if ( oex->oe_key == (void *)&autogroup )
+			return SLAP_CB_CONTINUE;
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_delete_entry <%s>\n", op->o_req_dn.bv_val );
+
+	ldap_pvt_thread_mutex_lock( &agi->agi_mutex );
+
+	if ( overlay_entry_get_ov( op, &op->o_req_ndn, NULL, NULL, 0, &e, on ) !=
+		LDAP_SUCCESS || e == NULL ) {
+		Debug( LDAP_DEBUG_TRACE, "autogroup_delete_entry: cannot get entry for <%s>\n", op->o_req_dn.bv_val );
+		ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );			
+		return SLAP_CB_CONTINUE;
+	}
+
+	/* Check if the entry to be deleted is one of our groups. */
+	for ( age_next = agi->agi_entry ; age_next ; age_prev = age ) {
+		age = age_next;
+		ldap_pvt_thread_mutex_lock( &age->age_mutex );
+		age_next = age->age_next;
+
+		if ( is_entry_objectclass_or_sub( e, age->age_def->agd_oc ) ) {
+			int match = 1;
+
+			matched_group = 1;
+
+			dnMatch( &match, 0, NULL, NULL, &e->e_nname, &age->age_ndn );
+
+			if ( match == 0 ) {
+				autogroup_delete_group( agi, age );
+				break;
+			}
+		}
+
+		ldap_pvt_thread_mutex_unlock( &age->age_mutex );			
+	}
+
+	if ( matched_group == 1 ) {
+		overlay_entry_release_ov( op, e, 0, on );
+		ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );		
+		return SLAP_CB_CONTINUE;
+	}
+
+	/* Check if the entry matches any of the groups.
+	   If yes, we can delete the entry from that group. */
+
+	odn = op->o_dn;
+	ondn = op->o_ndn;
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+
+	for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+		ldap_pvt_thread_mutex_lock( &age->age_mutex );		
+
+		for ( agf = age->age_filter; agf ; agf = agf->agf_next ) {
+			if ( dnIsSuffix( &op->o_req_ndn, &agf->agf_ndn ) ) {
+				rc = test_filter( op, e, agf->agf_filter );
+				if ( rc == LDAP_COMPARE_TRUE ) {
+					/* If the attribute is retrieved from the entry, we don't know what to delete
+					** So the group must be entirely refreshed
+					** But the refresh can't be done now because the entry is not deleted
+					** So the group is marked as mustrefresh
+					*/
+					if ( agf->agf_anlist ) {
+						age->age_mustrefresh = 1;
+					} else {
+						autogroup_delete_member_from_group( op, &e->e_name, &e->e_nname, age );
+					}
+					break;
+				}
+			}
+		}
+		ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+	}
+	op->o_dn = odn;
+	op->o_ndn = ondn;
+
+	overlay_entry_release_ov( op, e, 0, on );
+	ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );		
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+autogroup_response( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	autogroup_info_t	*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	autogroup_def_t		*agd = agi->agi_def;
+	autogroup_entry_t	*age;
+	autogroup_filter_t	*agf;
+	BerValue		new_dn, new_ndn, pdn;
+	Entry			*e, *group;
+	Attribute		*a, *ea, *attrs;
+	int			is_olddn, is_newdn, is_value_refresh, dn_equal;
+	OpExtra *oex;
+
+	LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
+		if ( oex->oe_key == (void *)&autogroup )
+			break;
+	}
+
+	/* Handle all cases where a refresh of the group is needed */
+	if ( op->o_tag == LDAP_REQ_DELETE || op->o_tag == LDAP_REQ_MODIFY ) {
+		if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS && !oex ) {
+
+			ldap_pvt_thread_mutex_lock( &agi->agi_mutex );
+
+			for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+				/* Request detected that the group must be refreshed */
+
+				ldap_pvt_thread_mutex_lock( &age->age_mutex );
+
+				if ( age->age_mustrefresh ) {
+					autogroup_delete_member_from_group( op, NULL, NULL, age) ;
+
+					for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+						autogroup_add_members_from_filter( op, NULL, age, agf, 1 );
+					}
+				}
+
+				ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+			}
+
+			ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+		}
+	} else if ( op->o_tag == LDAP_REQ_MODRDN ) {
+		if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS && !oex ) {
+
+			Debug( LDAP_DEBUG_TRACE, "==> autogroup_response MODRDN from <%s>\n", op->o_req_dn.bv_val );
+
+			ldap_pvt_thread_mutex_lock( &agi->agi_mutex );			
+
+			if ( op->oq_modrdn.rs_newSup ) {
+				pdn = *op->oq_modrdn.rs_newSup;
+			} else {
+				dnParent( &op->o_req_dn, &pdn );
+			}
+			build_new_dn( &new_dn, &pdn, &op->orr_newrdn, op->o_tmpmemctx );
+
+			if ( op->oq_modrdn.rs_nnewSup ) {
+				pdn = *op->oq_modrdn.rs_nnewSup;
+			} else {
+				dnParent( &op->o_req_ndn, &pdn );
+			}
+			build_new_dn( &new_ndn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
+
+			Debug( LDAP_DEBUG_TRACE, "autogroup_response MODRDN to <%s>\n", new_dn.bv_val );
+
+			dnMatch( &dn_equal, 0, NULL, NULL, &op->o_req_ndn, &new_ndn );
+
+			if ( overlay_entry_get_ov( op, &new_ndn, NULL, NULL, 0, &e, on ) !=
+				LDAP_SUCCESS || e == NULL ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_response MODRDN cannot get entry for <%s>\n", new_dn.bv_val );
+				ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+				return SLAP_CB_CONTINUE;
+			}
+
+			a = attrs_find( e->e_attrs, slap_schema.si_ad_objectClass );
+
+
+			if ( a == NULL ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_response MODRDN entry <%s> has no objectClass\n", new_dn.bv_val );
+				overlay_entry_release_ov( op, e, 0, on );
+				ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );		
+				return SLAP_CB_CONTINUE;
+			}
+
+
+			/* If a groups DN is modified, just update age_dn/ndn of that group with the new DN. */
+			for ( ; agd; agd = agd->agd_next ) {
+
+				if ( value_find_ex( slap_schema.si_ad_objectClass,
+						SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+						SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+						a->a_nvals, &agd->agd_oc->soc_cname,
+						op->o_tmpmemctx ) == 0 )
+				{		
+					for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+						int match = 1;
+
+						dnMatch( &match, 0, NULL, NULL, &age->age_ndn, &op->o_req_ndn );
+						if ( match == 0 ) {
+							Debug( LDAP_DEBUG_TRACE, "autogroup_response MODRDN updating group's DN to <%s>\n", new_dn.bv_val );
+							ber_dupbv( &age->age_dn, &new_dn );
+							ber_dupbv( &age->age_ndn, &new_ndn );
+
+							op->o_tmpfree( new_dn.bv_val, op->o_tmpmemctx  );
+							op->o_tmpfree( new_ndn.bv_val, op->o_tmpmemctx );
+							overlay_entry_release_ov( op, e, 0, on );
+							ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );		
+							return SLAP_CB_CONTINUE;
+						}
+					}
+
+				}
+			}
+
+			/* For each group: 
+			   1. check if the original entry's DN is in the group.
+			   2. check if the any of the group filter's base DN is a suffix of the new DN
+
+			   If 1 and 2 are both false, we do nothing.
+			   If 1 and 2 is true, we remove the old DN from the group, and add the new DN.
+			   If 1 is false, and 2 is true, we check the entry against the group's filters,
+				and add it's DN to the group.
+			   If 1 is true, and 2 is false, we delete the entry's DN from the group.
+			*/
+			attrs = attrs_dup( e->e_attrs );
+			overlay_entry_release_ov( op, e, 0, on );
+			for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+				is_olddn = 0;
+				is_newdn = 0;
+				is_value_refresh = 0;
+
+				ldap_pvt_thread_mutex_lock( &age->age_mutex );
+
+				if ( age->age_filter && age->age_filter->agf_anlist ) {
+					ea = attrs_find( attrs, age->age_filter->agf_anlist[0].an_desc );
+				}
+				else {
+					ea = NULL;
+				}
+
+				if ( age->age_modrdn_olddnmodified ) {
+					/* Request already marked this group to be updated */
+					is_olddn = 1;
+					is_value_refresh = 1;
+					age->age_modrdn_olddnmodified = 0;
+				} else {
+
+					if ( overlay_entry_get_ov( op, &age->age_ndn, NULL, NULL, 0, &group, on ) !=
+						LDAP_SUCCESS || group == NULL ) {
+						Debug( LDAP_DEBUG_TRACE, "autogroup_response MODRDN cannot get group entry <%s>\n", age->age_dn.bv_val );
+
+						op->o_tmpfree( new_dn.bv_val, op->o_tmpmemctx );
+						op->o_tmpfree( new_ndn.bv_val, op->o_tmpmemctx );
+
+						attrs_free( attrs );
+						ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+						ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+						return SLAP_CB_CONTINUE;
+					}
+
+					a = attrs_find( group->e_attrs, age->age_def->agd_member_ad );
+
+					if ( a != NULL ) {
+						if ( value_find_ex( age->age_def->agd_member_ad,
+								SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+								SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+								a->a_nvals, ea ? ea->a_nvals : &op->o_req_ndn, op->o_tmpmemctx ) == 0 ) 
+						{
+							is_olddn = 1;
+						}
+
+					}
+
+					overlay_entry_release_ov( op, group, 0, on );
+
+				}
+
+				for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+					if ( dnIsSuffix( &new_ndn, &agf->agf_ndn ) ) {
+						/* TODO: should retest filter as it could imply conditions on the dn */
+						is_newdn = 1;
+						break;
+					}
+				}
+
+
+				if ( is_value_refresh ) {
+					if ( is_olddn != is_newdn ) {
+						/* group refresh */
+						autogroup_delete_member_from_group( op, NULL, NULL, age) ;
+
+						for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+							autogroup_add_members_from_filter( op, NULL, age, agf, 1 );
+						}
+					}
+					ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+					continue;
+				}
+				if ( is_olddn == 1 && is_newdn == 0 ) {
+					if ( ea )
+						autogroup_delete_member_values_from_group( op, &new_dn, age, ea );
+					else
+						autogroup_delete_member_from_group( op, &op->o_req_dn, &op->o_req_ndn, age );
+				} else
+				if ( is_olddn == 0 && is_newdn == 1 ) {
+					Entry etmp;
+					struct berval odn, ondn;
+					etmp.e_name = op->o_req_dn;
+					etmp.e_nname = op->o_req_ndn;
+					etmp.e_attrs = attrs;
+					odn = op->o_dn;
+					ondn = op->o_ndn;
+					op->o_dn = op->o_bd->be_rootdn;
+					op->o_ndn = op->o_bd->be_rootndn;
+
+					for ( agf = age->age_filter; agf; agf = agf->agf_next ) {
+						if ( test_filter( op, &etmp, agf->agf_filter ) == LDAP_COMPARE_TRUE ) {
+							if ( ea ) {
+								autogroup_add_member_values_to_group( op, &new_dn, age, ea );
+							} else
+								autogroup_add_member_to_group( op, &new_dn, &new_ndn, age );
+							break;
+						}
+					}
+					op->o_dn = odn;
+					op->o_ndn = ondn;
+				} else
+				if ( is_olddn == 1 && is_newdn == 1 && dn_equal != 0 ) {
+					if ( ea ) {
+						/* group refresh */
+						autogroup_delete_member_from_group( op, NULL, NULL, age) ;
+
+						for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+							autogroup_add_members_from_filter( op, NULL, age, agf, 1 );
+						}
+					}
+					else {
+						autogroup_delete_member_from_group( op, &op->o_req_dn, &op->o_req_ndn, age );
+						autogroup_add_member_to_group( op, &new_dn, &new_ndn, age );
+					}
+				}
+
+				ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+			}
+
+			op->o_tmpfree( new_dn.bv_val, op->o_tmpmemctx );
+			op->o_tmpfree( new_ndn.bv_val, op->o_tmpmemctx );
+
+			attrs_free( attrs );
+
+			ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );			
+		}
+	}
+
+	if ( op->o_tag == LDAP_REQ_MODIFY ) {
+		if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS  && !oex ) {
+			Entry etmp;
+			struct berval odn, ondn;
+			Debug( LDAP_DEBUG_TRACE, "==> autogroup_response MODIFY <%s>\n", op->o_req_dn.bv_val );
+
+			ldap_pvt_thread_mutex_lock( &agi->agi_mutex );			
+
+			if ( overlay_entry_get_ov( op, &op->o_req_ndn, NULL, NULL, 0, &e, on ) !=
+				LDAP_SUCCESS || e == NULL ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_response MODIFY cannot get entry for <%s>\n", op->o_req_dn.bv_val );
+				ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+				return SLAP_CB_CONTINUE;
+			}
+
+			a = attrs_find( e->e_attrs, slap_schema.si_ad_objectClass );
+
+
+			if ( a == NULL ) {
+				Debug( LDAP_DEBUG_TRACE, "autogroup_response MODIFY entry <%s> has no objectClass\n", op->o_req_dn.bv_val );
+				overlay_entry_release_ov( op, e, 0, on );
+				ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );		
+				return SLAP_CB_CONTINUE;
+			}
+
+			/* If we modify a group's memberURL, we have to delete all of it's members,
+			   and add them anew, because we cannot tell from which memberURL a member was added. */
+			for ( ; agd; agd = agd->agd_next ) {
+
+				if ( value_find_ex( slap_schema.si_ad_objectClass,
+						SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+						SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+						a->a_nvals, &agd->agd_oc->soc_cname,
+						op->o_tmpmemctx ) == 0 )
+				{
+					Modifications	*m;
+					int		match = 1;
+
+					m = op->orm_modlist;
+
+					for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+						ldap_pvt_thread_mutex_lock( &age->age_mutex );
+
+						dnMatch( &match, 0, NULL, NULL, &op->o_req_ndn, &age->age_ndn );
+
+						if ( match == 0 ) {
+							for ( ; m ; m = m->sml_next ) {
+								if ( m->sml_desc == age->age_def->agd_member_url_ad ) {
+									autogroup_def_t	*group_agd = age->age_def;
+									Debug( LDAP_DEBUG_TRACE, "autogroup_response MODIFY changing memberURL for group <%s>\n", 
+										op->o_req_dn.bv_val );
+
+									overlay_entry_release_ov( op, e, 0, on );
+
+									autogroup_delete_member_from_group( op, NULL, NULL, age );
+									autogroup_delete_group( agi, age );
+
+									autogroup_add_group( op, agi, group_agd, NULL, &op->o_req_ndn, 1, 1);
+
+									ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+									return SLAP_CB_CONTINUE;
+								}
+							}
+
+							ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+							break;
+						}
+
+						ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+					}
+
+					overlay_entry_release_ov( op, e, 0, on );
+					ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+					return SLAP_CB_CONTINUE;
+				}
+			}
+
+			/* When modifying any of the attributes of an entry, we must
+			   check if the entry is in any of our groups, and if
+			   the modified entry matches any of the filters of that group.
+
+			   If the entry exists in a group, but the modified attributes do
+				not match any of the group's filters, we delete the entry from that group.
+			   If the entry doesn't exist in a group, but matches a filter, 
+				we add it to that group.
+			*/
+			attrs = attrs_dup( e->e_attrs );
+			overlay_entry_release_ov( op, e, 0, on );
+			etmp.e_name = op->o_req_dn;
+			etmp.e_nname = op->o_req_ndn;
+			etmp.e_attrs = attrs;
+			odn = op->o_dn;
+			ondn = op->o_ndn;
+			op->o_dn = op->o_bd->be_rootdn;
+			op->o_ndn = op->o_bd->be_rootndn;
+
+			for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+				is_olddn = 0;
+				is_newdn = 0;
+
+				ldap_pvt_thread_mutex_lock( &age->age_mutex );
+
+				if ( age->age_filter && age->age_filter->agf_anlist ) {
+					ea = attrs_find( attrs, age->age_filter->agf_anlist[0].an_desc );
+				}
+				else {
+					ea = NULL;
+				}
+
+				if ( overlay_entry_get_ov( op, &age->age_ndn, NULL, NULL, 0, &group, on ) !=
+					LDAP_SUCCESS || group == NULL ) {
+					Debug( LDAP_DEBUG_TRACE, "autogroup_response MODIFY cannot get entry for <%s>\n", 
+						age->age_dn.bv_val );
+
+					attrs_free( attrs );
+					ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+					ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+					op->o_dn = odn;
+					op->o_ndn = ondn;
+					return SLAP_CB_CONTINUE;
+				}
+
+				a = attrs_find( group->e_attrs, age->age_def->agd_member_ad );
+
+				if ( a != NULL ) {
+					if ( value_find_ex( age->age_def->agd_member_ad,
+							SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+							SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+							a->a_nvals, ea ? ea->a_nvals : &op->o_req_ndn, op->o_tmpmemctx ) == 0 ) 
+					{
+						is_olddn = 1;
+					}
+
+				}
+
+				overlay_entry_release_ov( op, group, 0, on );
+
+				for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+					if ( dnIsSuffix( &op->o_req_ndn, &agf->agf_ndn ) ) {
+						if ( test_filter( op, &etmp, agf->agf_filter ) == LDAP_COMPARE_TRUE ) {
+							is_newdn = 1;
+							break;
+						}
+					}
+				}
+
+				if ( is_olddn == 1 && is_newdn == 0 ) {
+					if(ea)
+						autogroup_delete_member_values_from_group( op, &op->o_req_dn, age, ea );
+					else
+						autogroup_delete_member_from_group( op, &op->o_req_dn, &op->o_req_ndn, age );
+				} else
+				if ( is_olddn == 0 && is_newdn == 1 ) {
+					if(ea)
+						autogroup_add_member_values_to_group( op, &op->o_req_dn, age, ea );
+					else
+						autogroup_add_member_to_group( op, &op->o_req_dn, &op->o_req_ndn, age );
+				} 
+
+				ldap_pvt_thread_mutex_unlock( &age->age_mutex );
+			}
+
+			op->o_dn = odn;
+			op->o_ndn = ondn;
+			attrs_free( attrs );
+
+			ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+		}
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+/*
+** Detect if filter contains a memberOf check for dn
+*/
+static int
+autogroup_memberOf_filter( Filter *f, BerValue *dn, AttributeDescription *memberof_ad )
+{
+	int result = 0;
+	if ( f == NULL ) return 0;
+
+  	switch ( f->f_choice & SLAPD_FILTER_MASK ) {
+		case LDAP_FILTER_AND:
+		case LDAP_FILTER_OR:
+		case LDAP_FILTER_NOT:
+			for ( f = f->f_un.f_un_complex; f && !result; f = f->f_next ) {
+				result = result || autogroup_memberOf_filter( f, dn, memberof_ad );
+			}
+			break;
+		case LDAP_FILTER_EQUALITY:
+			result = ( f->f_ava->aa_desc == memberof_ad &&
+			           ber_bvcmp( &f->f_ava->aa_value, dn ) == 0 );
+			break;
+		default:
+			break;
+	}
+
+	return result;
+}
+
+/*
+** When modifying a group, we must deny any modifications to the member attribute,
+** because the group would be inconsistent.
+*/
+static int
+autogroup_modify_entry( Operation *op, SlapReply *rs)
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	autogroup_info_t		*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	autogroup_def_t		*agd = agi->agi_def;
+	autogroup_entry_t	*age;
+	Entry			*e;
+	Attribute		*a;
+	struct berval odn, ondn;
+	OpExtra *oex;
+
+	LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
+		if ( oex->oe_key == (void *)&autogroup )
+			return SLAP_CB_CONTINUE;
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_modify_entry <%s>\n", op->o_req_dn.bv_val );
+	ldap_pvt_thread_mutex_lock( &agi->agi_mutex );			
+
+	if ( overlay_entry_get_ov( op, &op->o_req_ndn, NULL, NULL, 0, &e, on ) !=
+		LDAP_SUCCESS || e == NULL ) {
+		Debug( LDAP_DEBUG_TRACE, "autogroup_modify_entry cannot get entry for <%s>\n", op->o_req_dn.bv_val );
+		ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+		return SLAP_CB_CONTINUE;
+	}
+
+	odn = op->o_dn;
+	ondn = op->o_ndn;
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+
+	/* Must refresh groups if a matching member value is modified OR filter contains memberOf=DN */
+	for ( age = agi->agi_entry; age ; age = age->age_next ) {
+		autogroup_filter_t	*agf;
+		for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+			if ( agf->agf_anlist ) {
+				Modifications	*m;
+				for ( m = op->orm_modlist ; m ; m = m->sml_next ) {
+					if ( m->sml_desc == agf->agf_anlist[0].an_desc ) {
+						if ( dnIsSuffix( &op->o_req_ndn, &agf->agf_ndn ) ) {
+							int rc = test_filter( op, e, agf->agf_filter );
+							if ( rc == LDAP_COMPARE_TRUE ) {
+								age->age_mustrefresh = 1;
+							}
+						}
+					}
+				}
+			}
+
+			if ( autogroup_memberOf_filter( agf->agf_filter, &op->o_req_ndn, agi->agi_memberof_ad ) ) {
+				age->age_mustrefresh = 1;
+			}
+		}
+	}
+	op->o_dn = odn;
+	op->o_ndn = ondn;
+
+	a = attrs_find( e->e_attrs, slap_schema.si_ad_objectClass );
+
+	if ( a == NULL ) {
+		Debug( LDAP_DEBUG_TRACE, "autogroup_modify_entry entry <%s> has no objectClass\n", op->o_req_dn.bv_val );
+		ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );		
+		return SLAP_CB_CONTINUE;
+	}
+
+
+	for ( ; agd; agd = agd->agd_next ) {
+
+		if ( value_find_ex( slap_schema.si_ad_objectClass,
+				SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+				SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+				a->a_nvals, &agd->agd_oc->soc_cname,
+				op->o_tmpmemctx ) == 0 )
+		{
+			Modifications	*m;
+			int		match = 1;
+
+			m = op->orm_modlist;
+
+			for ( age = agi->agi_entry ; age ; age = age->age_next ) {
+				dnMatch( &match, 0, NULL, NULL, &op->o_req_ndn, &age->age_ndn );
+
+				if ( match == 0 ) {
+					for ( ; m ; m = m->sml_next ) {
+						if ( m->sml_desc == age->age_def->agd_member_ad ) {
+							overlay_entry_release_ov( op, e, 0, on );
+							ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+							Debug( LDAP_DEBUG_TRACE, "autogroup_modify_entry attempted to modify group's <%s> member attribute\n", op->o_req_dn.bv_val );
+							send_ldap_error(op, rs, LDAP_CONSTRAINT_VIOLATION, "attempt to modify dynamic group member attribute");
+							return LDAP_CONSTRAINT_VIOLATION;
+						}
+					}
+					break;
+				}
+			}
+
+			/* an entry may only have one dynamic group class */
+			break;
+		}
+	}
+
+	overlay_entry_release_ov( op, e, 0, on );
+	ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );			
+	return SLAP_CB_CONTINUE;
+}
+
+/*
+** Detect if the olddn is part of a group and so if the group should be refreshed
+*/
+static int
+autogroup_modrdn_entry( Operation *op, SlapReply *rs)
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	autogroup_info_t	*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	autogroup_entry_t	*age;
+	Entry			*e;
+	struct berval odn, ondn;
+	OpExtra *oex;
+
+	LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
+		if ( oex->oe_key == (void *)&autogroup )
+			return SLAP_CB_CONTINUE;
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_modrdn_entry <%s>\n", op->o_req_dn.bv_val );
+	ldap_pvt_thread_mutex_lock( &agi->agi_mutex );			
+
+	if ( overlay_entry_get_ov( op, &op->o_req_ndn, NULL, NULL, 0, &e, on ) !=
+		LDAP_SUCCESS || e == NULL ) {
+		Debug( LDAP_DEBUG_TRACE, "autogroup_modrdn_entry cannot get entry for <%s>\n", op->o_req_dn.bv_val );
+		ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );
+		return SLAP_CB_CONTINUE;
+	}
+
+	odn = op->o_dn;
+	ondn = op->o_ndn;
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+
+	/* Must check if a dn is modified */
+	for ( age = agi->agi_entry; age ; age = age->age_next ) {
+		autogroup_filter_t	*agf;
+		for ( agf = age->age_filter ; agf ; agf = agf->agf_next ) {
+			if ( agf->agf_anlist ) {
+				if ( dnIsSuffix( &op->o_req_ndn, &agf->agf_ndn ) ) {
+					int rc = test_filter( op, e, agf->agf_filter );
+					if ( rc == LDAP_COMPARE_TRUE ) {
+						age->age_modrdn_olddnmodified = 1;
+					}
+				}
+			}
+		}
+	}
+	op->o_dn = odn;
+	op->o_ndn = ondn;
+
+	overlay_entry_release_ov( op, e, 0, on );
+	ldap_pvt_thread_mutex_unlock( &agi->agi_mutex );			
+	return SLAP_CB_CONTINUE;
+}
+
+/* 
+** Builds a filter for searching for the 
+** group entries, according to the objectClass. 
+*/
+static int
+autogroup_build_def_filter( autogroup_def_t *agd, Operation *op )
+{
+	char	*ptr;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_build_def_filter\n" );
+
+	op->ors_filterstr.bv_len = STRLENOF( "(=)" ) 
+			+ slap_schema.si_ad_objectClass->ad_cname.bv_len
+			+ agd->agd_oc->soc_cname.bv_len;
+	ptr = op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
+	*ptr++ = '(';
+	ptr = lutil_strcopy( ptr, slap_schema.si_ad_objectClass->ad_cname.bv_val );
+	*ptr++ = '=';
+	ptr = lutil_strcopy( ptr, agd->agd_oc->soc_cname.bv_val );
+	*ptr++ = ')';
+	*ptr = '\0';
+
+	op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
+
+	assert( op->ors_filterstr.bv_len == ptr - op->ors_filterstr.bv_val );
+
+	return 0;
+}
+
+enum {
+	AG_ATTRSET = 1,
+	AG_MEMBER_OF_AD,
+	AG_LAST
+};
+
+static ConfigDriver	ag_cfgen;
+
+static ConfigTable agcfg[] = {
+	{ "autogroup-attrset", "group-oc> <URL-ad> <member-ad",
+		4, 4, 0, ARG_MAGIC|AG_ATTRSET, ag_cfgen,
+		"( OLcfgCtAt:2.1 NAME ( 'olcAutoGroupAttrSet' 'olcAGattrSet' ) "
+			"DESC 'Automatic groups: <group objectClass>, <URL attributeDescription>, <member attributeDescription>' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString "
+			"X-ORDERED 'VALUES' )",
+			NULL, NULL },
+	
+	{ "autogroup-memberof-ad", "memberOf attribute",
+		2, 2, 0, ARG_MAGIC|AG_MEMBER_OF_AD, ag_cfgen,
+		"( OLcfgCtAt:2.2 NAME ( 'olcAutoGroupMemberOfAd' 'olcAGmemberOfAd' ) "
+			"DESC 'memberOf attribute' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )",
+			NULL, NULL },
+
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs agocs[] = {
+	{ "( OLcfgCtOc:2.1 "
+		"NAME ( 'olcAutoGroupConfig' 'olcAutomaticGroups' ) "
+		"DESC 'Automatic groups configuration' "
+		"SUP olcOverlayConfig "
+		"MAY ( "
+			"olcAutoGroupAttrSet "
+			"$ olcAutoGroupMemberOfAd "
+		    ")"
+	  ")",
+		Cft_Overlay, agcfg, NULL, NULL },
+	{ NULL, 0, NULL }
+};
+
+
+static int
+ag_cfgen( ConfigArgs *c )
+{
+	slap_overinst		*on = (slap_overinst *)c->bi;
+	autogroup_info_t		*agi = (autogroup_info_t *)on->on_bi.bi_private;
+	autogroup_def_t		*agd;
+	autogroup_entry_t	*age;
+
+	int rc = 0, i;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_cfgen\n" );
+
+	if( agi == NULL ) {
+		agi = (autogroup_info_t*)ch_calloc( 1, sizeof(autogroup_info_t) );
+		ldap_pvt_thread_mutex_init( &agi->agi_mutex );
+		agi->agi_def = NULL;
+		agi->agi_entry = NULL;
+		on->on_bi.bi_private = (void *)agi;
+	}
+
+	agd = agi->agi_def;
+	age = agi->agi_entry;
+
+	if ( c->op == SLAP_CONFIG_EMIT ) {
+
+		switch( c->type ){
+		case AG_ATTRSET:
+			for ( i = 0 ; agd ; i++, agd = agd->agd_next ) {
+				struct berval	bv;
+				char		*ptr = c->cr_msg;
+	
+				assert(agd->agd_oc != NULL);
+				assert(agd->agd_member_url_ad != NULL);
+				assert(agd->agd_member_ad != NULL);
+	
+				ptr += snprintf( c->cr_msg, sizeof( c->cr_msg ),
+					SLAP_X_ORDERED_FMT "%s %s %s", i,
+					agd->agd_oc->soc_cname.bv_val,
+					agd->agd_member_url_ad->ad_cname.bv_val,
+					agd->agd_member_ad->ad_cname.bv_val );
+	
+				bv.bv_val = c->cr_msg;
+				bv.bv_len = ptr - bv.bv_val;
+				value_add_one ( &c->rvalue_vals, &bv );
+	
+			}
+			break;
+
+		case AG_MEMBER_OF_AD:
+			if ( agi->agi_memberof_ad != NULL ){
+				value_add_one( &c->rvalue_vals, &agi->agi_memberof_ad->ad_cname );
+			}
+			break;
+
+		default:
+			assert( 0 );
+			return 1;
+      }
+
+		return rc;
+
+	}else if ( c->op == LDAP_MOD_DELETE ) {
+		if ( c->valx < 0) {
+			autogroup_def_t 		*agd_next;
+			autogroup_entry_t	*age_next;
+			autogroup_filter_t	*agf = age->age_filter,
+						*agf_next;
+
+			for ( agd_next = agd; agd_next; agd = agd_next ) {
+				agd_next = agd->agd_next;
+
+				ch_free( agd );
+			}
+
+			for ( age_next = age ; age_next ; age = age_next ) {
+				age_next = age->age_next;
+
+				ch_free( age->age_dn.bv_val );
+				ch_free( age->age_ndn.bv_val );
+
+				for( agf_next = agf ; agf_next ; agf = agf_next ){
+					agf_next = agf->agf_next;
+
+					filter_free( agf->agf_filter );
+					ch_free( agf->agf_filterstr.bv_val );
+					ch_free( agf->agf_dn.bv_val );
+					ch_free( agf->agf_ndn.bv_val );
+					anlist_free( agf->agf_anlist, 1, NULL );
+					ch_free( agf );
+				}
+
+				ldap_pvt_thread_mutex_init( &age->age_mutex );
+				ch_free( age );
+			}
+
+			ch_free( agi );
+			on->on_bi.bi_private = NULL;
+
+		} else {
+			autogroup_def_t		**agdp;
+			autogroup_entry_t	*age_next, *age_prev;
+			autogroup_filter_t	*agf,
+						*agf_next;
+
+			for ( i = 0, agdp = &agi->agi_def;
+				i < c->valx; i++ ) 
+			{
+				if ( *agdp == NULL) {
+					return 1;
+				}
+				agdp = &(*agdp)->agd_next;
+			}
+
+			agd = *agdp;
+			*agdp = agd->agd_next;
+
+			for ( age_next = age , age_prev = NULL ; age_next ; age_prev = age, age = age_next ) {
+				age_next = age->age_next;
+
+				if( age->age_def == agd ) {
+					agf = age->age_filter;
+
+					ch_free( age->age_dn.bv_val );
+					ch_free( age->age_ndn.bv_val );
+
+					for ( agf_next = agf; agf_next ; agf = agf_next ) {
+						agf_next = agf->agf_next;
+						filter_free( agf->agf_filter );
+						ch_free( agf->agf_filterstr.bv_val );
+						ch_free( agf->agf_dn.bv_val );
+						ch_free( agf->agf_ndn.bv_val );
+						anlist_free( agf->agf_anlist, 1, NULL );
+						ch_free( agf );
+					}
+
+					ldap_pvt_thread_mutex_destroy( &age->age_mutex );
+					ch_free( age );
+
+					age = age_prev;
+
+					if( age_prev != NULL ) {
+						age_prev->age_next = age_next;
+					}
+				}
+			}
+
+			ch_free( agd );
+			agd = agi->agi_def;
+
+		}
+
+		return rc;
+	}
+
+	switch(c->type){
+	case AG_ATTRSET: {
+		autogroup_def_t		**agdp,
+					*agd_next = NULL;
+		ObjectClass		*oc = NULL;
+		AttributeDescription	*member_url_ad = NULL,
+					*member_ad = NULL;
+		const char		*text;
+
+
+		oc = oc_find( c->argv[ 1 ] );
+		if( oc == NULL ){
+			snprintf( c->cr_msg, sizeof( c->cr_msg ),
+				"\"autogroup-attrset <oc> <URL-ad> <member-ad>\": "
+				"unable to find ObjectClass \"%s\"",
+				c->argv[ 1 ] );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+
+		rc = slap_str2ad( c->argv[ 2 ], &member_url_ad, &text );
+		if( rc != LDAP_SUCCESS ) {
+			snprintf( c->cr_msg, sizeof( c->cr_msg ),
+				"\"autogroup-attrset <oc> <URL-ad> <member-ad>\": "
+				"unable to find AttributeDescription \"%s\"",
+				c->argv[ 2 ] );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+		if( !is_at_subtype( member_url_ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
+			snprintf( c->cr_msg, sizeof( c->cr_msg ),
+				"\"autogroup-attrset <oc> <URL-ad> <member-ad>\": "
+				"AttributeDescription \"%s\" ",
+				"must be of a subtype \"labeledURI\"",
+				c->argv[ 2 ] );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+		rc = slap_str2ad( c->argv[3], &member_ad, &text );
+		if( rc != LDAP_SUCCESS ) {
+			snprintf( c->cr_msg, sizeof( c->cr_msg ),
+				"\"autogroup-attrset <oc> <URL-ad> <member-ad>\": "
+				"unable to find AttributeDescription \"%s\"",
+				c->argv[ 3 ] );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+		for ( agdp = &agi->agi_def ; *agdp ; agdp = &(*agdp)->agd_next ) {
+			/* The same URL attribute / member attribute pair
+			* cannot be repeated */
+
+			if ( (*agdp)->agd_member_url_ad == member_url_ad && (*agdp)->agd_member_ad == member_ad ) {
+				snprintf( c->cr_msg, sizeof( c->cr_msg ),
+					"\"autogroup-attrset <oc> <URL-ad> <member-ad>\": "
+					"URL attributeDescription \"%s\" already mapped",
+					member_ad->ad_cname.bv_val );
+				Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+					c->log, c->cr_msg );
+/*				return 1; //warning*/
+			}
+		}
+
+		if ( c->valx >= 0 ) {
+			int	i;
+
+			for ( i = 0, agdp = &agi->agi_def ;
+				i < c->valx; i++ )
+			{
+				if ( *agdp == NULL ) {
+					snprintf( c->cr_msg, sizeof( c->cr_msg ),
+						"\"autogroup-attrset <oc> <URL-ad> <member-ad>\": "
+						"invalid index {%d}",
+						c->valx );
+					Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+						c->log, c->cr_msg );
+
+					return 1;
+				}
+				agdp = &(*agdp)->agd_next;
+			}
+			agd_next = *agdp;
+
+		} else {
+			for ( agdp = &agi->agi_def; *agdp;
+				agdp = &(*agdp)->agd_next )
+				/* goto last */;
+		}
+
+		*agdp = (autogroup_def_t *)ch_calloc( 1, sizeof(autogroup_info_t));
+
+		(*agdp)->agd_oc = oc;
+		(*agdp)->agd_member_url_ad = member_url_ad;
+		(*agdp)->agd_member_ad = member_ad;
+		(*agdp)->agd_next = agd_next;
+
+		} break;
+	
+	case AG_MEMBER_OF_AD: {
+		AttributeDescription *memberof_ad = NULL;
+		const char     *text;
+
+		rc = slap_str2ad( c->argv[ 1 ], &memberof_ad, &text );
+		if( rc != LDAP_SUCCESS ) {
+			snprintf( c->cr_msg, sizeof( c->cr_msg ),
+				"\"autogroup-memberof-ad <memberof-ad>\": "
+				"unable to find AttributeDescription \"%s\"",
+				c->argv[ 1 ] );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+		if ( !is_at_syntax( memberof_ad->ad_type, SLAPD_DN_SYNTAX )    /* e.g. "member" */
+		     && !is_at_syntax( memberof_ad->ad_type, SLAPD_NAMEUID_SYNTAX ) )  /* e.g. "uniqueMember" */
+		{
+			snprintf( c->cr_msg, sizeof( c->cr_msg ),
+				"memberof attribute=\"%s\" must either "
+				"have DN (%s) or nameUID (%s) syntax",
+				c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+		agi->agi_memberof_ad = memberof_ad;
+
+		} break;
+
+	default:
+		rc = 1;
+		break;
+	}
+
+	return rc;
+}
+
+extern int slapMode;
+
+/* 
+** Do a search for all the groups in the
+** database, and add them to out internal list.
+*/
+static int
+autogroup_db_open(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	slap_overinst			*on = (slap_overinst *) be->bd_info;
+	autogroup_info_t		*agi = on->on_bi.bi_private;
+	autogroup_def_t		*agd;
+	autogroup_sc_t		ags;
+	Operation		*op;
+	slap_callback		cb = { 0 };
+
+	void				*thrctx = ldap_pvt_thread_pool_context();
+	Connection			conn = { 0 };
+	OperationBuffer 	opbuf;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_db_open\n" );
+
+	if ( agi == NULL || !( slapMode & SLAP_SERVER_MODE )) {
+		return 0;
+	}
+
+	connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+	op = &opbuf.ob_op;
+
+	op->ors_attrsonly = 0;
+	op->o_tag = LDAP_REQ_SEARCH;
+	op->o_dn = be->be_rootdn;
+	op->o_ndn = be->be_rootndn;
+
+	op->o_req_dn = be->be_suffix[0];
+	op->o_req_ndn = be->be_nsuffix[0];
+
+	op->ors_scope = LDAP_SCOPE_SUBTREE;
+	op->ors_deref = LDAP_DEREF_NEVER;
+	op->ors_limit = NULL;
+	op->ors_tlimit = SLAP_NO_LIMIT;
+	op->ors_slimit = SLAP_NO_LIMIT;
+	op->ors_attrs =  slap_anlist_no_attrs;
+	op->o_do_not_cache = 1;
+
+	op->o_bd = be;
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+
+	ags.ags_info = agi;
+	cb.sc_private = &ags;
+	cb.sc_response = autogroup_group_add_cb;
+	cb.sc_cleanup = NULL;
+	cb.sc_next = NULL;
+
+	op->o_callback = &cb;
+
+	for (agd = agi->agi_def ; agd ; agd = agd->agd_next) {
+		SlapReply	rs = { REP_RESULT };
+
+		autogroup_build_def_filter(agd, op);
+
+		ags.ags_def = agd;
+
+		op->o_bd->be_search( op, &rs );
+
+		filter_free_x( op, op->ors_filter, 1 );
+		op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+	}		
+
+	if( ! agi->agi_memberof_ad ){
+		int			rc;
+		const char		*text = NULL;
+		
+		rc = slap_str2ad( SLAPD_MEMBEROF_ATTR, &agi->agi_memberof_ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY, "autogroup_db_open: "
+			"unable to find attribute=\"%s\": %s (%d)\n",
+			SLAPD_MEMBEROF_ATTR, text, rc );
+			return rc;
+		}
+	}
+
+	return 0;
+}
+
+static int
+autogroup_db_close(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	slap_overinst			*on = (slap_overinst *) be->bd_info;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_db_close\n" );
+
+	if ( on->on_bi.bi_private ) {
+		autogroup_info_t		*agi = on->on_bi.bi_private;
+		autogroup_entry_t	*age = agi->agi_entry,
+					*age_next;
+		autogroup_filter_t	*agf, *agf_next;
+
+		for ( age_next = age; age_next; age = age_next ) {
+			age_next = age->age_next;
+
+			ch_free( age->age_dn.bv_val );
+			ch_free( age->age_ndn.bv_val );
+
+			agf = age->age_filter;
+
+			for ( agf_next = agf; agf_next; agf = agf_next ) {
+				agf_next = agf->agf_next;
+
+				filter_free( agf->agf_filter );
+				ch_free( agf->agf_filterstr.bv_val );
+				ch_free( agf->agf_dn.bv_val );
+				ch_free( agf->agf_ndn.bv_val );	
+				anlist_free( agf->agf_anlist, 1, NULL );
+				ch_free( agf );
+			}
+
+			ldap_pvt_thread_mutex_destroy( &age->age_mutex );
+			ch_free( age );
+		}
+	}
+
+	return 0;
+}
+
+static int
+autogroup_db_destroy(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	slap_overinst			*on = (slap_overinst *) be->bd_info;
+
+	Debug( LDAP_DEBUG_TRACE, "==> autogroup_db_destroy\n" );
+
+	if ( on->on_bi.bi_private ) {
+		autogroup_info_t		*agi = on->on_bi.bi_private;
+		autogroup_def_t		*agd = agi->agi_def,
+					*agd_next;
+
+		for ( agd_next = agd; agd_next; agd = agd_next ) {
+			agd_next = agd->agd_next;
+
+			ch_free( agd );
+		}
+
+		ldap_pvt_thread_mutex_destroy( &agi->agi_mutex );
+		ch_free( agi );
+	}
+
+	return 0;
+}
+
+static
+int
+autogroup_initialize(void)
+{
+	int		rc = 0;
+	autogroup.on_bi.bi_type = "autogroup";
+
+	autogroup.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	autogroup.on_bi.bi_db_open = autogroup_db_open;
+	autogroup.on_bi.bi_db_close = autogroup_db_close;
+	autogroup.on_bi.bi_db_destroy = autogroup_db_destroy;
+
+	autogroup.on_bi.bi_op_add = autogroup_add_entry;
+	autogroup.on_bi.bi_op_delete = autogroup_delete_entry;
+	autogroup.on_bi.bi_op_modify = autogroup_modify_entry;
+	autogroup.on_bi.bi_op_modrdn = autogroup_modrdn_entry;
+
+	autogroup.on_response = autogroup_response;
+
+	autogroup.on_bi.bi_cf_ocs = agocs;
+
+	rc = config_register_schema( agcfg, agocs );
+	if ( rc ) {
+		return rc;
+	}
+
+	return overlay_register( &autogroup );
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	return autogroup_initialize();
+}
diff --git a/contrib/slapd-modules/autogroup/slapo-autogroup.5 b/contrib/slapd-modules/autogroup/slapo-autogroup.5
new file mode 100644
index 0000000..4c6414d
--- /dev/null
+++ b/contrib/slapd-modules/autogroup/slapo-autogroup.5
@@ -0,0 +1,116 @@
+.TH SLAPO-AUTOGROUP 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 1998-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Portions Copyright \[u00A9] 2007 Michał Szulczyński.
+.\" Copying restrictions apply.  See the COPYRIGHT file.
+.\" $OpenLDAP$
+.SH NAME
+\FCslapo-autogroup\FT \- automatic updates of group memberships which meet the
+requirements of any filter contained in the group definition.
+.SH SYNOPSIS
+In \FCslapd.conf\FT:
+ ...
+ \FCinclude ETCDIR/schema/dyngroup.schema\FT
+ ...
+ \FCmoduleload autogroup.so\FT
+ ...
+ \FCdatabase\FT ...
+ ...
+ \FCoverlay autogroup\FT
+ \FCautogroup-attrset groupOfURLs memberURL member\FT
+.SH DESCRIPTION
+The
+.B autogroup
+overlay to
+.BR slapd (8)
+allows automated updates of group memberships which meet the requirements
+of any filter contained in the group definition. The filters are built from
+LDAP URI-valued attributes. Any time an object is added/deleted/updated, it is
+tested for compliance with the filters, and its membership is accordingly
+updated. For searches and compares, it behaves like a static group.
+If the attribute part of the URI is filled, the group entry is populated by
+the values of this attribute in the entries resulting from the search.
+.SH CONFIGURATION
+Either
+.BR \FCslapd.conf\FT (5)
+or the \FCcn=config\FT methodology of
+.BR \FCslapd-config\FT (5)
+may be used for configuring autogroup.  Both syntaxes are provided
+here for convenience:
+.TP
+.B \FCautogroup-attrset\FT <group-oc> <URL-ad> <member-ad>
+.TP
+.B \FColcAutoGroupAttrSet:\FT <group-oc> <URL-ad> <member-ad>
+This defines the objectclass-attribute-URI mappings defining the
+automatically managed groups, and may appear multiple times.
+
+The value <group-oc> is the name of the objectClass that represents
+the group.
+
+The value <URL-ad> is the name of the attributeDescription that
+contains the URI that is converted to the filters. If no URI is
+present, there will be no members in that group. It must be a subtype
+of labeledURI.
+
+The value <member-ad> is the name of the attributeDescription that
+specifies the member attribute. User modification of this attribute is
+disabled for consistency.
+.TP
+.B \FCautogroup-memberof-ad\FT <memberof-ad>
+.TP
+.B \FColcAutoGroupMemberOfAd\FT <memberof-ad>
+This defines the attribute that is used by the memberOf overlay to
+store the names of groups that an entry is member of; it must be
+DN-valued. It should be set to the same value as
+memberof-memberof-ad. It defaults to 'memberOf'.
+.SH EXAMPLES
+As above in SYNOPSIS, or with memberof:
+
+ ...
+ \FCinclude ETCDIR/schema/dyngroup.schema\FT
+ \FCinclude ETCDIR/schema/memberof.schema\FT
+ ...
+ \FCmoduleload autogroup.so\FT
+ \FCmoduleload memberof.so\FT
+ ...
+ \FCdatabase\FT ...
+ ...
+ \FCoverlay memberof\FT
+ \FCmemberof-memberof-ad\FT foo
+ ...
+ \FCoverlay autogroup\FT
+ \FCautogroup-attrset groupOfURLs memberURL member\FT
+ \FCautogroup-memberof-ad\FT foo
+.SH CAVEATS
+As with static groups, update operations on groups with a large number
+of members may be slow. If the attribute part of the URI is specified,
+modify and delete operations are more difficult to handle. In these
+cases the overlay will try to detect if groups have been modified and
+then simply refresh them. This can cause performance hits if the
+search specified by the URI deals with a significant number of
+entries.
+.SH BACKWARD COMPATIBILITY
+The autogroup overlay has been reworked with the 2.5 release to use
+a consistent namespace as with other overlays. As a side-effect the
+following cn=config parameters are deprecated and will be removed in
+a future release:
+.IP \[bu] 2
+.B olcAGattrSet
+is replaced with olcAutoGroupAttrSet
+.IP \[bu]
+.B olcAGmemberOfAd
+is replaced with olcAutoGroupMemberOfAd
+.IP \[bu]
+.B olcAutomaticGroups
+is replaced with olcAutoGroupConfig
+.SH ACKNOWLEDGEMENTS
+This module was originally written in 2007 by Michał
+Szulczyński.  Further enhancements were contributed by Howard
+Chu, Raphael Ouazana, Norbert Pueschel, and Christian Manal.  Manpage
+updates provided by Emily Backes.
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR slapd (8).
+.SH Copyrights
+Copyright 1998-2022 The OpenLDAP Foundation.
+Portions Copyright \[u00A9] 2007 Michał Szulczyński.
+All rights reserved.
diff --git a/contrib/slapd-modules/cloak/Makefile b/contrib/slapd-modules/cloak/Makefile
new file mode 100644
index 0000000..c54e6b1
--- /dev/null
+++ b/contrib/slapd-modules/cloak/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_CLOAK=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = cloak.la
+MANPAGES = slapo-cloak.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+cloak.la: cloak.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/cloak/cloak.c b/contrib/slapd-modules/cloak/cloak.c
new file mode 100644
index 0000000..ced7a80
--- /dev/null
+++ b/contrib/slapd-modules/cloak/cloak.c
@@ -0,0 +1,354 @@
+/* cloak.c - Overlay to hide some attribute except if explicitly requested */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 Emmanuel Dreyfus
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was originally developed by the Emmanuel Dreyfus for
+ * inclusion in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_CLOAK
+
+#include <stdio.h>
+
+#include "ac/string.h"
+#include "ac/socket.h"
+
+#include "lutil.h"
+#include "slap.h"
+#include "slap-config.h"
+
+enum { CLOAK_ATTR = 1 };
+
+typedef struct cloak_info_t {
+	ObjectClass 		*ci_oc;	
+	AttributeDescription	*ci_ad;
+	struct cloak_info_t	*ci_next;
+} cloak_info_t;
+
+#define CLOAK_USAGE "\"cloak-attr <attr> [<class>]\": "
+
+static int
+cloak_cfgen( ConfigArgs *c )
+{
+	slap_overinst	*on = (slap_overinst *)c->bi;
+	cloak_info_t	*ci = (cloak_info_t *)on->on_bi.bi_private;
+
+	int		rc = 0, i;
+
+	if ( c->op == SLAP_CONFIG_EMIT ) {
+		switch( c->type ) {
+		case CLOAK_ATTR:
+			for ( i = 0; ci; i++, ci = ci->ci_next ) {
+				struct berval	bv;
+				int len;
+
+				assert( ci->ci_ad != NULL );
+
+				if ( ci->ci_oc != NULL )
+					len = snprintf( c->cr_msg, 
+					sizeof( c->cr_msg ),
+					SLAP_X_ORDERED_FMT "%s %s", i,
+					ci->ci_ad->ad_cname.bv_val,
+					ci->ci_oc->soc_cname.bv_val );
+				else
+					len = snprintf( c->cr_msg, 
+					sizeof( c->cr_msg ),
+					SLAP_X_ORDERED_FMT "%s", i,
+					ci->ci_ad->ad_cname.bv_val );
+
+				bv.bv_val = c->cr_msg;
+				bv.bv_len = len;
+				value_add_one( &c->rvalue_vals, &bv );
+			}
+			break;
+
+		default:
+			rc = 1;
+			break;
+		}
+
+		return rc;
+
+	} else if ( c->op == LDAP_MOD_DELETE ) {
+		cloak_info_t	*ci_next;
+
+		switch( c->type ) {
+		case CLOAK_ATTR:
+			for ( ci_next = ci, i = 0; 
+			      ci_next, c->valx < 0 || i < c->valx; 
+			      ci = ci_next, i++ ){
+
+				ci_next = ci->ci_next;
+
+				ch_free ( ci->ci_ad );
+				if ( ci->ci_oc != NULL )
+					ch_free ( ci->ci_oc );
+
+				ch_free( ci );
+			}
+			ci = (cloak_info_t *)on->on_bi.bi_private;
+			break;
+
+		default:
+			rc = 1;
+			break;
+		}
+
+		return rc;
+	}
+
+	switch( c->type ) {
+	case CLOAK_ATTR: {
+		ObjectClass		*oc = NULL;
+		AttributeDescription	*ad = NULL;
+		const char		*text;
+		cloak_info_t 	       **cip = NULL;
+		cloak_info_t 	        *ci_next = NULL;
+
+		if ( c->argc == 3 ) {
+			oc = oc_find( c->argv[ 2 ] );
+			if ( oc == NULL ) {
+				snprintf( c->cr_msg, 
+					  sizeof( c->cr_msg ), 
+					  CLOAK_USAGE
+					  "unable to find ObjectClass \"%s\"",
+					  c->argv[ 2 ] );
+				Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				       c->log, c->cr_msg );
+				return 1;
+			}
+		}
+
+		rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			snprintf( c->cr_msg, sizeof( c->cr_msg ), CLOAK_USAGE
+				"unable to find AttributeDescription \"%s\"",
+				c->argv[ 1 ] );
+			Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+				c->log, c->cr_msg );
+			return 1;
+		}
+
+		for ( i = 0, cip = (cloak_info_t **)&on->on_bi.bi_private;
+		      c->valx < 0 || i < c->valx, *cip;
+		      i++, cip = &(*cip)->ci_next ) {
+			if ( c->valx >= 0 && *cip == NULL ) {
+				snprintf( c->cr_msg, sizeof( c->cr_msg ),
+					CLOAK_USAGE
+					"invalid index {%d}\n",
+					c->valx );
+				Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
+					c->log, c->cr_msg );
+				return 1;
+			}
+			ci_next = *cip;
+		}
+
+		*cip = (cloak_info_t *)SLAP_CALLOC( 1, sizeof( cloak_info_t ) );
+		(*cip)->ci_oc = oc;
+		(*cip)->ci_ad = ad;
+		(*cip)->ci_next = ci_next;
+
+		rc = 0;
+		break;
+	}
+
+	default:
+		rc = 1;
+		break;
+	}
+
+	return rc;
+}
+
+static int
+cloak_search_response_cb( Operation *op, SlapReply *rs )
+{
+	slap_callback   *sc;
+	cloak_info_t	*ci;
+	Entry		*e = NULL;
+	Entry		*me = NULL;
+
+	assert( op && op->o_callback && rs );
+
+	if ( rs->sr_type != REP_SEARCH || !rs->sr_entry ) {
+		return ( SLAP_CB_CONTINUE );
+	}
+
+	sc = op->o_callback;
+	e = rs->sr_entry;
+
+	/* 
+	 * First perform a quick scan for an attribute to cloak
+	 */
+	for ( ci = (cloak_info_t *)sc->sc_private; ci; ci = ci->ci_next ) {
+		Attribute *a;
+
+		if ( ci->ci_oc != NULL &&
+		     !is_entry_objectclass_or_sub( e, ci->ci_oc ) )
+			continue;
+
+		for ( a = e->e_attrs; a; a = a->a_next )
+			if ( a->a_desc == ci->ci_ad )
+				break;
+
+		if ( a != NULL )
+			break;
+	}
+
+	/*
+	 * Nothing found to cloak
+	 */
+	if ( ci == NULL )
+		return ( SLAP_CB_CONTINUE );
+
+	/*
+	 * We are now committed to cloak an attribute.
+	 */
+	rs_entry2modifiable( op, rs, (slap_overinst *) op->o_bd->bd_info );
+	me = rs->sr_entry;
+		
+	for ( ci = (cloak_info_t *)sc->sc_private; ci; ci = ci->ci_next ) {
+		Attribute *a;
+		Attribute *pa;
+
+		for ( pa = NULL, a = me->e_attrs;
+		      a; 
+		      pa = a, a = a->a_next ) {
+
+			if ( a->a_desc != ci->ci_ad )
+				continue;
+
+			Debug( LDAP_DEBUG_TRACE, "cloak_search_response_cb: cloak %s\n", 
+			       a->a_desc->ad_cname.bv_val );
+
+			if ( pa != NULL ) 
+				pa->a_next = a->a_next;
+			else
+				me->e_attrs = a->a_next;
+
+			attr_clean( a );
+		}
+
+	}
+
+	return ( SLAP_CB_CONTINUE );
+}
+
+static int
+cloak_search_cleanup_cb( Operation *op, SlapReply *rs )
+{
+	if ( rs->sr_type == REP_RESULT || rs->sr_err != LDAP_SUCCESS ) {
+		slap_freeself_cb( op, rs );
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+cloak_search( Operation *op, SlapReply *rs )
+{
+	slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
+	cloak_info_t    *ci = (cloak_info_t *)on->on_bi.bi_private; 
+	slap_callback	*sc;
+
+	if ( op->ors_attrsonly ||
+	     op->ors_attrs ||
+	     get_manageDSAit( op ) )
+		return SLAP_CB_CONTINUE;
+
+	sc = op->o_tmpcalloc( 1, sizeof( *sc ), op->o_tmpmemctx );
+	sc->sc_response = cloak_search_response_cb;
+	sc->sc_cleanup = cloak_search_cleanup_cb;
+	sc->sc_next = op->o_callback;
+	sc->sc_private = ci;
+	op->o_callback = sc;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static slap_overinst cloak_ovl;
+
+static ConfigTable cloakcfg[] = {
+	{ "cloak-attr", "attribute [class]",
+		2, 3, 0, ARG_MAGIC|CLOAK_ATTR, cloak_cfgen,
+		"( OLcfgCtAt:4.1 NAME 'olcCloakAttribute' "
+			"DESC 'Cloaked attribute: attribute [class]' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString "
+			"X-ORDERED 'VALUES' )",
+			NULL, NULL },
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static int
+cloak_db_destroy(
+	BackendDB *be,
+	ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	cloak_info_t	*ci = (cloak_info_t *)on->on_bi.bi_private;
+
+	for ( ; ci; ) {
+		cloak_info_t *tmp = ci;
+		ci = ci->ci_next;
+		SLAP_FREE( tmp );
+	}
+
+	on->on_bi.bi_private = NULL;
+
+	return 0;
+}
+
+static ConfigOCs cloakocs[] = {
+	{ "( OLcfgCtOc:4.1 "
+	  "NAME 'olcCloakConfig' "
+	  "DESC 'Attribute cloak configuration' "
+	  "SUP olcOverlayConfig "
+	  "MAY ( olcCloakAttribute ) )", 
+	  Cft_Overlay, cloakcfg },
+	{ NULL, 0, NULL }
+};
+
+#if SLAPD_OVER_CLOAK == SLAPD_MOD_DYNAMIC
+static
+#endif
+int
+cloak_initialize( void ) {
+	int rc;
+	cloak_ovl.on_bi.bi_type = "cloak";
+	cloak_ovl.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	cloak_ovl.on_bi.bi_db_destroy = cloak_db_destroy;
+	cloak_ovl.on_bi.bi_op_search = cloak_search;
+        cloak_ovl.on_bi.bi_cf_ocs = cloakocs;
+
+	rc = config_register_schema ( cloakcfg, cloakocs );
+	if ( rc ) 
+		return rc;
+
+	return overlay_register( &cloak_ovl );
+}
+
+#if SLAPD_OVER_CLOAK == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	return cloak_initialize();
+}
+#endif
+
+#endif /* defined(SLAPD_OVER_CLOAK) */
+
diff --git a/contrib/slapd-modules/cloak/slapo-cloak.5 b/contrib/slapd-modules/cloak/slapo-cloak.5
new file mode 100644
index 0000000..2655d2e
--- /dev/null
+++ b/contrib/slapd-modules/cloak/slapo-cloak.5
@@ -0,0 +1,82 @@
+.TH SLAPO-CLOAK 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 1998-2022 The OpenLDAP Foundation, All Rights Reserved.
+.\" Copying restrictions apply.  See the COPYRIGHT file.
+.\" $OpenLDAP$
+.SH NAME
+slapo-cloak \- Attribute cloak overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+The
+.B cloak
+overlay to
+.BR slapd (8)
+allows the server to hide specific attributes, unless explicitly requested
+by the client. This improve performance when a client requests all attributes
+and get a huge binary attribute that is of no interest for it.
+This behavior is disabled when the \fImanageDSAit\fP
+control (RFC 3296) is used.
+
+.SH CONFIGURATION
+The config directives that are specific to the
+.B cloak
+overlay must be prefixed by
+.BR cloak\- ,
+to avoid potential conflicts with directives specific to the underlying 
+database or to other stacked overlays.
+
+.TP
+.B overlay cloak
+This directive adds the cloak overlay to the current database,
+or to the frontend, if used before any database instantiation; see
+.BR slapd.conf (5)
+for details.
+
+.LP
+This
+.B slapd.conf
+configuration option is defined for the cloak overlay. It may have multiple 
+occurrences, and it must appear after the
+.B overlay
+directive:
+.TP
+.B cloak-attr <attribute> [<class>]
+The value 
+.B <attribute>
+is the name of the attribute that will be cloaked.
+
+The optional
+.B <class>
+restricts cloaking only to entries of the named 
+.B <class>.
+
+.SH EXAMPLE
+This example hide the
+.B jpegPhoto
+attribute. Add the following to slapd.conf:
+
+.LP
+.nf
+    database <database>
+    # ...
+
+    overlay cloak
+    cloak-attr jpegPhoto
+.fi
+.LP
+and that slapd loads cloak.la, if compiled as a run-time module;
+
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR slapd (8).
+The
+.BR slapo-cloak (5)
+overlay supports dynamic configuration via
+.BR back-config .
+.SH ACKNOWLEDGEMENTS
+.P
+This module was originally written in 2008 by Emmanuel Dreyfus.
diff --git a/contrib/slapd-modules/comp_match/Makefile b/contrib/slapd-modules/comp_match/Makefile
new file mode 100644
index 0000000..9b78c5c
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/Makefile
@@ -0,0 +1,69 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 2003-2022 The OpenLDAP Foundation.
+# Portions Copyright 2004 by IBM Corporation.
+# All rights reserved.
+
+# Copyright 2004 Sang Seok Lim, IBM Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+SNACC_DIR = ../$(LDAP_SRC)/snacc
+SNACC_INC = -I$(SNACC_DIR) -I$(SNACC_DIR)/c-lib/inc
+SNACC_LIB = $(SNACC_DIR)/c-lib/libcasn1.a
+
+SSL_DIR = /usr/local
+SSL_INC = -I$(SSL_DIR)/include/openssl
+SSL_LIB = -lcrypto -L$(SSL_DIR)/lib
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DLDAP_COMPONENT
+INCS = $(LDAP_INC) $(SNACC_INC) $(SSL_INC)
+LIBS = $(LDAP_LIB) $(SNACC_LIB) $(SSL_LIB)
+
+PROGRAMS = compmatch.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+compmatch.la: componentlib.lo init.lo certificate.lo asn_to_syn_mr.lo authorityKeyIdentifier.lo crl.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/comp_match/README b/contrib/slapd-modules/comp_match/README
new file mode 100644
index 0000000..133757c
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/README
@@ -0,0 +1,127 @@
+Copyright 2004 Sang Seok Lim, IBM . All rights reserved.
+
+Redistribution and use in source and binary forms, with
+or without modification, are permitted only as authorized
+by the OpenLDAP Public License.
+
+A copy of this license is available in the file LICENSE in
+the top-level directory of the distribution or, alternatively,
+at <http://www.OpenLDAP.org/license.html>.
+
+This directory contains a Component Matching module and
+a X.509 Certificate example.  In order to understand Component
+Matching, see RFC 3687 and
+http://www.openldap.org/conf/odd-sandiego-2004/Sangseok.pdf
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+A) Brief introduction about files in this directory
+%%%%%%%%%%55%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+1) init.c
+module_init() and functions which are dynamically linked
+into the main slapd codes.
+
+2) componentlib.c and componentlib.h
+GSER and BER decoder library of each primitive ASN.1 type.
+They use component representation to store ASN.1 values.
+
+3) certificate.c/.h authorityKeyIdentifier.c/.h
+eSNACC generated BER and GSER decoder routines of the X.509
+certificate specification and one of its extensions,
+authorityKeyIdentifier.
+
+4) asn_to_syn_mr.c asn.h
+An mapping table from ASN.1 types to corresponding Syntaxes,
+matching rules, and component description in slapd.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+B) How to use Component Matching on X.509 certificates
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+1) be sure to configure slapd with enable-modules on.
+2) install the GSER-support eSNACC compiler. You can find
+only in www.openldap.org. At least, you need the library
+(libcasn1.a) and header files for compiling this module.
+3) modify Makefile accordingly. then run make.
+you will get compmatch.la and other necessary files in ./libs
+4) modify slapd.conf to include the following module command
+	moduleload <path to>compmatch.la
+5) run slapd and perform search operations against
+the attribute, userCertificate. You need to read through
+RFC 3687 in order to understand how to compose component
+filters.
+Ex) component search filter examples
+"(userCertificate:componentFilterMatch:=item:{ component
+\"toBeSigned.serialNumber\", rule integerMatch, value 2 })"
+You can find more examples in "test031-component-filter"
+in the OpenLDAP source directory.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+C) How to add a new ASN.1 syntax
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+1) download and install the eSNACC compiler supporting
+Component Matching. You can find the compiler only in
+www.openldap.org.  Before compiling, be sure to define
+the "LDAP_COMPONENT" macro to obtain component
+supported version of C library and back-ends of eSNACC.
+Otherwise compiled library will fail to be linked to
+the module.
+2) using eSNACC, compile your ASN.1 specifications and
+copy the generated .c and .h files to this directory
+Ex)
+$ esnacc -E BER_COMP -E GSER -t -d -f example.asn 
+For Component Matching, set BOTH BER_COMP and GSER on.
+After compiling, you will get example.c and example.h
+3) modify example.c accordingly, seeing certificate.c
+and certificate.asn as a reference.
+- add init_module_xxx() located in generated .c file
+into init_module() in init.c.
+- modify the arguments of InstallOidDecoderMapping(...)
+accordingly
+- in the generated .c file, you need to write
+"DecComponentxxxTop(...)" function for yourself.
+You can copy BDecComponentCertificateTop in the 
+generated .c file and modify it accordingly.
+4) register a new attribute syntax with a new OID
+in a schema file
+5) then goto 3) of B) section.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+D) How to configure Component Indexing
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+You can generate indices on each component of
+a given attribute whose values are in either GSER or
+BER. Currently primitive ASN.1 types, DN, and RDN
+can be indexed for equality matching in BDB.
+In order to generate indices, put following line
+in the slapd configuration file, slapd.conf.
+
+index [attribute name].[component reference] eq
+
+Ex)
+index userCertificate eq
+index userCertificate.toBeSigned.issuer.rdnSequence eq
+index userCertificate.toBeSigned.serialNumber eq
+index userCertificate.toBeSigned.version eq
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+D) How to configure Attribute Alias
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+If your client is unable to use component filters,
+attribute aliasing can be used instead. Attribute
+Alias maps a virtual attribute type to an attribute
+component and a component matching rule.
+You can create your own aliases by following steps.
+
+1) register aliasing attributes in the schema file.
+Sample aliasing attributes are in test.schema.
+2) compose component filters for aliasing attributes
+and put them in "preprocessed_comp_filter" array
+in "init.c".
+3) add "add_aa_entry" function calls in
+"init_attribute_aliasing_table()" in "init.c"
+4) perform searching against the aliasing attribute
+Ex)
+"(x509CertificateIssuer:distinguishedNameMatch=
+cn=ray,L=yorktown,o=ibm,c=us)"
diff --git a/contrib/slapd-modules/comp_match/asn.h b/contrib/slapd-modules/comp_match/asn.h
new file mode 100644
index 0000000..a7d5b16
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/asn.h
@@ -0,0 +1,57 @@
+/* Copyright 2004 IBM Corporation
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ */
+/* ACKNOWLEDGEMENTS
+ * This work originally developed by Sang Seok Lim
+ * 2004/06/18	03:20:00	slim@OpenLDAP.org
+ */
+#ifndef _H_ASN_MODULE
+#define _H_ASN_MODULE
+
+typedef enum { BER, GSER } EncRulesType;
+
+typedef enum AsnTypeId {
+	BASICTYPE_BOOLEAN = 0,
+	BASICTYPE_INTEGER, 
+	BASICTYPE_BITSTRING,
+	BASICTYPE_OCTETSTRING,
+	BASICTYPE_NULL,
+	BASICTYPE_OID,
+	BASICTYPE_REAL,
+	BASICTYPE_ENUMERATED,
+	BASICTYPE_NUMERIC_STR,
+	BASICTYPE_PRINTABLE_STR,
+	BASICTYPE_UNIVERSAL_STR,
+	BASICTYPE_IA5_STR,
+	BASICTYPE_BMP_STR,
+	BASICTYPE_UTF8_STR,
+	BASICTYPE_UTCTIME,
+	BASICTYPE_GENERALIZEDTIME,
+	BASICTYPE_GRAPHIC_STR,
+	BASICTYPE_VISIBLE_STR,
+	BASICTYPE_GENERAL_STR,
+	BASICTYPE_OBJECTDESCRIPTOR,
+	BASICTYPE_VIDEOTEX_STR,
+	BASICTYPE_T61_STR,
+	BASICTYPE_OCTETCONTAINING,
+	BASICTYPE_BITCONTAINING,
+	BASICTYPE_RELATIVE_OID,	/* 25 */
+	BASICTYPE_ANY,
+	/* Embedded Composite Types*/
+	COMPOSITE_ASN1_TYPE,
+	/* A New ASN.1 types including type reference */
+	RDNSequence,
+	RelativeDistinguishedName,
+	TelephoneNumber,
+	FacsimileTelephoneNumber__telephoneNumber,
+	DirectoryString,
+	/* Newly Defined ASN.1 Type, Manually registered */
+	ASN_COMP_CERTIFICATE,
+	/* ASN.1 Type End */
+	ASNTYPE_END
+} AsnTypeId;
+
+#endif
diff --git a/contrib/slapd-modules/comp_match/asn_to_syn_mr.c b/contrib/slapd-modules/comp_match/asn_to_syn_mr.c
new file mode 100644
index 0000000..9c3f7e7
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/asn_to_syn_mr.c
@@ -0,0 +1,282 @@
+#include <component.h>
+#include "asn.h"
+#include "componentlib.h"
+#include "certificate.h"
+
+AsnTypetoMatchingRuleTable directory_component_matching_table[] = {
+	"1.2.36.79672281.1.13.7",
+{
+	{ BASICTYPE_BOOLEAN,NULL,"1.3.6.1.4.1.1466.115.121.1.7", NULL },
+        { BASICTYPE_INTEGER,NULL ,"1.3.6.1.4.1.1466.115.121.1.27", NULL },
+        { BASICTYPE_BITSTRING,NULL ,"1.3.6.1.4.1.1466.115.121.1.6", NULL },
+        { BASICTYPE_OCTETSTRING,NULL , "1.3.6.1.4.1.1466.115.121.1.40", NULL },
+        { BASICTYPE_NULL,NULL , NULL, NULL },
+        { BASICTYPE_OID,NULL ,"1.3.6.1.4.1.1466.115.121.1.38", NULL },
+        { BASICTYPE_REAL,NULL , NULL, NULL },
+        { BASICTYPE_ENUMERATED,NULL , NULL, NULL },
+        { BASICTYPE_NUMERIC_STR, "numericStringMatch", "1.3.6.1.4.1.1466.115.121.1.36", NULL },
+        { BASICTYPE_PRINTABLE_STR, "caseIgnoreMatch", "1.3.6.1.4.1.1466.115.121.1.44", NULL },
+        { BASICTYPE_UNIVERSAL_STR, "caseIgnoreMatch" , NULL, NULL },
+        { BASICTYPE_IA5_STR, "caseIgnoreMatch", "1.3.6.1.4.1.1466.115.121.1.26", NULL },
+        { BASICTYPE_BMP_STR, "caseIgnoreMatch" , NULL, NULL },
+        { BASICTYPE_UTF8_STR, "caseIgnoreMatch" , NULL, NULL },
+        { BASICTYPE_UTCTIME, "uTCTimeMatch" , "1.3.6.1.4.1.1466.115.121.1.53", NULL },
+        { BASICTYPE_GENERALIZEDTIME, "generalizedTimeMatch" ,"1.3.6.1.4.1.1466.115.121.1.24", NULL },
+        { BASICTYPE_GRAPHIC_STR, "caseIgnoreMatch", NULL, NULL },
+        { BASICTYPE_VISIBLE_STR, "caseIgnoreMatch", NULL, NULL },
+        { BASICTYPE_GENERAL_STR, "caseIgnoreMatch", NULL, NULL },
+        { BASICTYPE_OBJECTDESCRIPTOR, NULL , NULL, NULL },
+        { BASICTYPE_VIDEOTEX_STR, "caseIgnoreMatch", NULL, NULL },
+        { BASICTYPE_T61_STR, "caseIgnoreMatch", NULL, NULL },
+        { BASICTYPE_OCTETCONTAINING, NULL , NULL, NULL },
+        { BASICTYPE_BITCONTAINING, NULL , NULL, NULL },
+        { BASICTYPE_RELATIVE_OID, NULL, "1.2.36.79672281.1.5.0", NULL },
+        { RDNSequence, "distinguishedNameMatch" , NULL, NULL },
+        { RelativeDistinguishedName, NULL , NULL, NULL },
+        { TelephoneNumber, "telephoneNumberMatch" , "1.3.6.1.4.1.1466.115.121.1.50", NULL },
+        { FacsimileTelephoneNumber__telephoneNumber, "telephoneNumberMatch","1.3.6.1.4.1.1466.115.121.1.22", NULL },
+        { DirectoryString, "caseIgnoreMatch" ,"1.3.6.1.4.1.1466.115.121.1.15", NULL },
+        { ASN_COMP_CERTIFICATE, NULL , "1.2.36.79672281.1.5.2" , NULL },
+        { ASNTYPE_END , NULL , NULL, NULL }
+},
+	NULL
+}; 
+
+AsnTypetoSyntax asn_to_syntax_mapping_tbl[] = {
+{ BASICTYPE_BOOLEAN,"Boolean","1.3.6.1.4.1.1466.115.121.1.7", NULL },
+{ BASICTYPE_INTEGER,"Integer","1.3.6.1.4.1.1466.115.121.1.27", NULL },
+{ BASICTYPE_BITSTRING,"Bit String","1.3.6.1.4.1.1466.115.121.1.6", NULL },
+{ BASICTYPE_OCTETSTRING,"Octet String", "1.3.6.1.4.1.1466.115.121.1.40", NULL },
+{ BASICTYPE_NULL,NULL, NULL, NULL },
+{ BASICTYPE_OID,"OID","1.3.6.1.4.1.1466.115.121.1.38", NULL },
+{ BASICTYPE_REAL,NULL, NULL, NULL },
+{ BASICTYPE_ENUMERATED,"Integer", "1.3.6.1.4.1.1466.115.121.1.27", NULL },
+{ BASICTYPE_NUMERIC_STR, "Numeric String", "1.3.6.1.4.1.1466.115.121.1.36", NULL },
+{ BASICTYPE_PRINTABLE_STR, "Printable String", "1.3.6.1.4.1.1466.115.121.1.44", NULL },
+{ BASICTYPE_UNIVERSAL_STR, NULL , NULL, NULL },
+{ BASICTYPE_IA5_STR, "IA5 String", "1.3.6.1.4.1.1466.115.121.1.26", NULL },
+{ BASICTYPE_BMP_STR, NULL , NULL, NULL },
+{ BASICTYPE_UTF8_STR, "Directory String" , "1.3.6.1.4.1.1466.115.121.1.15", NULL },
+{ BASICTYPE_UTCTIME, "UTC Time" , "1.3.6.1.4.1.1466.115.121.1.53", NULL },
+{ BASICTYPE_GENERALIZEDTIME, "Generalized Time" ,"1.3.6.1.4.1.1466.115.121.1.24", NULL },
+{ BASICTYPE_GRAPHIC_STR, NULL, NULL, NULL },
+{ BASICTYPE_VISIBLE_STR, "Directory String", "1.3.6.1.4.1.1466.115.121.1.15", NULL },
+{ BASICTYPE_GENERAL_STR, NULL, NULL, NULL },
+{ BASICTYPE_OBJECTDESCRIPTOR, "Object Class Description", "1.3.6.1.4.1.1466.115.121.1.37", NULL },
+{ BASICTYPE_VIDEOTEX_STR, NULL, NULL, NULL },
+{ BASICTYPE_T61_STR, NULL, NULL, NULL },
+{ BASICTYPE_OCTETCONTAINING, NULL , NULL, NULL },
+{ BASICTYPE_BITCONTAINING, NULL , NULL, NULL },
+{ BASICTYPE_RELATIVE_OID, "OID", "1.3.6.1.4.1.1466.115.121.1.38", NULL },
+{ BASICTYPE_ANY, NULL, NULL, NULL },
+{ COMPOSITE_ASN1_TYPE, NULL , NULL, NULL },
+{ RDNSequence, "Distinguished Name" , "1.3.6.1.4.1.1466.115.121.1.12", NULL },
+{ RelativeDistinguishedName, "RDN", "1.2.36.79672281.1.5.0", NULL },
+{ TelephoneNumber, "Telephone Number" , "1.3.6.1.4.1.1466.115.121.1.50", NULL },
+{ FacsimileTelephoneNumber__telephoneNumber, "Facsimile Telephone Number","1.3.6.1.4.1.1466.115.121.1.22", NULL },
+{ DirectoryString, "Directory String" ,"1.3.6.1.4.1.1466.115.121.1.15", NULL },
+{ ASN_COMP_CERTIFICATE, "componentCertificate", "1.2.36.79672281.1.5.2" , NULL },
+{ ASNTYPE_END , NULL , NULL, NULL }
+}; 
+
+/*
+ * This table describes relationship between an ASN.1 type and its
+ * potential matching rules such as equality, approx, ordering, and substring
+ * Based on the description of this table, the following ComponentType
+ * table is initialized
+ */
+AsnTypetoCompMatchingRule asntype_to_compMR_mapping_tbl[] = {
+{ BASICTYPE_BOOLEAN, "booleanMatch", NULL, NULL, NULL },
+{ BASICTYPE_INTEGER, "integerMatch", NULL, "integerOrderingMatch", NULL },
+{ BASICTYPE_BITSTRING, "bitStringMatch", NULL, NULL, NULL },
+{ BASICTYPE_OCTETSTRING, "octetStringMatch", NULL, "octetStringOrderingMatch", NULL },
+{ BASICTYPE_NULL, NULL, NULL, NULL, NULL },
+{ BASICTYPE_OID, "objectIdentifierMatch", NULL, NULL, NULL },
+{ BASICTYPE_REAL,  NULL, NULL, NULL, NULL },
+{ BASICTYPE_ENUMERATED,  "integerMatch", NULL, "integerOrderingMatch", NULL },
+{ BASICTYPE_NUMERIC_STR,  "numericStringMatch", NULL, "numericStringOrderingMatch", "numericStringSubstringsMatch"},
+{ BASICTYPE_PRINTABLE_STR, "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ BASICTYPE_UNIVERSAL_STR, "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ BASICTYPE_IA5_STR, "caseIgnoreMatch", "IA5StringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ BASICTYPE_BMP_STR, "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ BASICTYPE_UTF8_STR, "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ BASICTYPE_UTCTIME, NULL, NULL, NULL, NULL },
+{ BASICTYPE_GENERALIZEDTIME,  NULL, NULL, NULL, NULL },
+{ BASICTYPE_GRAPHIC_STR, NULL, NULL, NULL, NULL },
+{ BASICTYPE_VISIBLE_STR, "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ BASICTYPE_GENERAL_STR, NULL, NULL, NULL, NULL },
+{ BASICTYPE_OBJECTDESCRIPTOR, "objectIdentifierFirstComponentMatch", NULL, NULL, NULL },
+{ BASICTYPE_VIDEOTEX_STR, NULL, NULL, NULL, NULL },
+{ BASICTYPE_T61_STR, NULL, NULL, NULL, NULL },
+{ BASICTYPE_OCTETCONTAINING,  NULL, NULL, NULL, NULL },
+{ BASICTYPE_BITCONTAINING,  NULL, NULL, NULL, NULL },
+{ BASICTYPE_RELATIVE_OID,  "objectIdentifierFirstComponentMatch", NULL, NULL, NULL },
+{ BASICTYPE_ANY, NULL, NULL, NULL, NULL },
+{ COMPOSITE_ASN1_TYPE,  NULL, NULL, NULL, NULL },
+{ RDNSequence,  "distinguishedNameMatch", NULL, NULL, NULL },
+{ RelativeDistinguishedName, "rdnMatch" , NULL, NULL, NULL },
+{ TelephoneNumber, NULL, NULL, NULL, NULL },
+{ FacsimileTelephoneNumber__telephoneNumber,  "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch" },
+{ DirectoryString, "caseIgnoreMatch", "directoryStringApproxMatch", "caseIgnoreOrderingMatch", "caseIgnoreSubstringsMatch"},
+{ ASN_COMP_CERTIFICATE, "componentFilterMatch", NULL, NULL, NULL },
+{ ASNTYPE_END, NULL, NULL, NULL, NULL }
+};
+
+/*
+ * This table maps an ASN type to a corresponding ComponentType which has
+ * equivalent contents of an existing AttributeType
+ */
+AsnTypetoCompType asntype_to_compType_mapping_tbl[] = {
+{ BASICTYPE_BOOLEAN,{}},
+{ BASICTYPE_INTEGER, {}},
+{ BASICTYPE_BITSTRING, {}},
+{ BASICTYPE_OCTETSTRING, {}},
+{ BASICTYPE_NULL, {}},
+{ BASICTYPE_OID, {}},
+{ BASICTYPE_REAL, {}},
+{ BASICTYPE_ENUMERATED, {}},
+{ BASICTYPE_NUMERIC_STR, {}},
+{ BASICTYPE_PRINTABLE_STR, {}},
+{ BASICTYPE_UNIVERSAL_STR, {}},
+{ BASICTYPE_IA5_STR, {}},
+{ BASICTYPE_BMP_STR, {}},
+{ BASICTYPE_UTF8_STR, {}},
+{ BASICTYPE_UTCTIME, {}},
+{ BASICTYPE_GENERALIZEDTIME, {}},
+{ BASICTYPE_GRAPHIC_STR, {}},
+{ BASICTYPE_VISIBLE_STR, {}},
+{ BASICTYPE_GENERAL_STR,{}},
+{ BASICTYPE_OBJECTDESCRIPTOR, {}},
+{ BASICTYPE_VIDEOTEX_STR, {}},
+{ BASICTYPE_T61_STR, {}},
+{ BASICTYPE_OCTETCONTAINING, {}},
+{ BASICTYPE_BITCONTAINING, {}},
+{ BASICTYPE_RELATIVE_OID, {}},
+{ BASICTYPE_ANY, {}},
+{ COMPOSITE_ASN1_TYPE, {}},
+{ RDNSequence, {}},
+{ RelativeDistinguishedName, {}}, 
+{ TelephoneNumber, {}},
+{ FacsimileTelephoneNumber__telephoneNumber, {}},
+{ DirectoryString, {}},
+{ ASN_COMP_CERTIFICATE, {}},
+{ ASNTYPE_END , {}}
+};
+
+AsnTypetoCompDesc asntype_to_compdesc_mapping_tbl[] = {
+{ BASICTYPE_BOOLEAN, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_BOOLEAN,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentBool,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentBool,(ber_decoder_func*)BDecComponentBool,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentBool}},
+{ BASICTYPE_INTEGER, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_INTEGER,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentInt,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentInt,(ber_decoder_func*)BDecComponentInt,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentInt}},
+{ BASICTYPE_BITSTRING, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_BITSTRING,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentBits,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentBits,(ber_decoder_func*)BDecComponentBits,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentBits}},
+{ BASICTYPE_OCTETSTRING, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_OCTETSTRING,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentOcts,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentOcts,(ber_decoder_func*)BDecComponentOcts,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentOcts}},
+{ BASICTYPE_NULL, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_NULL,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentNull,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentNull,(ber_decoder_func*)BDecComponentNull,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentNull}},
+{ BASICTYPE_OID, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_OID,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentOid,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentOid,(ber_decoder_func*)BDecComponentOid,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentOid}},
+{ BASICTYPE_REAL, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_REAL,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentReal,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentReal,(ber_decoder_func*)BDecComponentReal,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentReal}},
+{ BASICTYPE_ENUMERATED, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_ENUMERATED,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentEnum,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentEnum,(ber_decoder_func*)BDecComponentEnum,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentEnum}},
+{ BASICTYPE_NUMERIC_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_NUMERIC_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentNumericString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentNumericString,(ber_decoder_func*)BDecComponentNumericString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentNumericString}},
+{ BASICTYPE_PRINTABLE_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_PRINTABLE_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentPrintableString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentPrintableString,(ber_decoder_func*)BDecComponentPrintableString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentPrintableString}},
+{ BASICTYPE_UNIVERSAL_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_UNIVERSAL_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUniversalString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUniversalString,(ber_decoder_func*)BDecComponentUniversalString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUniversalString}},
+{ BASICTYPE_IA5_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_IA5_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentIA5String,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentIA5String,(ber_decoder_func*)BDecComponentIA5String,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentIA5String}},
+{ BASICTYPE_BMP_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_BMP_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentBMPString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentBMPString,(ber_decoder_func*)BDecComponentBMPString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentBMPString}},
+{ BASICTYPE_UTF8_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_UTF8_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUTF8String,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUTF8String,(ber_decoder_func*)BDecComponentUTF8String,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUTF8String}},
+{ BASICTYPE_UTCTIME, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_UTCTIME,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUTCTime,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUTCTime,(ber_decoder_func*)BDecComponentUTCTime,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUTCTime}},
+{ BASICTYPE_GENERALIZEDTIME, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_GENERALIZEDTIME,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUTCTime,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUTCTime,(ber_decoder_func*)BDecComponentUTCTime,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUTCTime}},
+{ BASICTYPE_GRAPHIC_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_GRAPHIC_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentPrintableString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentPrintableString,(ber_decoder_func*)BDecComponentPrintableString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentPrintableString}},
+{ BASICTYPE_VISIBLE_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_VISIBLE_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentVisibleString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentVisibleString,(ber_decoder_func*)BDecComponentVisibleString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentVisibleString}},
+{ BASICTYPE_GENERAL_STR,{ -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_GENERAL_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUTF8String,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUTF8String,(ber_decoder_func*)BDecComponentUTF8String,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUTF8String}},
+{ BASICTYPE_OBJECTDESCRIPTOR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_OBJECTDESCRIPTOR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUTF8String,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUTF8String,(ber_decoder_func*)BDecComponentUTF8String,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUTF8String}},
+{ BASICTYPE_VIDEOTEX_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_VIDEOTEX_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentTeletexString,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentTeletexString,(ber_decoder_func*)BDecComponentTeletexString,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentTeletexString}},
+{ BASICTYPE_T61_STR, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_T61_STR,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentUTF8String,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentUTF8String,(ber_decoder_func*)BDecComponentUTF8String,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentUTF8String}},
+{ BASICTYPE_OCTETCONTAINING, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_OCTETCONTAINING,
+	(encoder_func*)NULL,(encoder_func*)NULL,(encoder_func*)NULL,
+	(gser_decoder_func*)NULL,(ber_decoder_func*)NULL,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,NULL}},
+{ BASICTYPE_BITCONTAINING, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_BITCONTAINING,
+	(encoder_func*)NULL,(encoder_func*)NULL,(encoder_func*)NULL,
+	(gser_decoder_func*)NULL,(ber_decoder_func*)NULL,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,NULL}},
+{ BASICTYPE_RELATIVE_OID, { -1, NULL, {},{},0,ASN_BASIC,BASICTYPE_RELATIVE_OID,
+	(encoder_func*)NULL,(encoder_func*)GEncComponentRelativeOid,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentRelativeOid,(ber_decoder_func*)BDecComponentRelativeOid,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentRelativeOid}},
+{ BASICTYPE_ANY, {}},
+{ COMPOSITE_ASN1_TYPE, {}},
+{ RDNSequence, { -1, NULL, {},{},0,ASN_COMPOSITE,RDNSequence,
+	(encoder_func*)ConvertRDNSequence2RFC2253,(encoder_func*)NULL,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentRDNSequence,(ber_decoder_func*)BDecComponentRDNSequence,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentRDNSequence}},
+{ RelativeDistinguishedName, { -1, NULL, {},{},0,ASN_COMPOSITE,RDNSequence,
+	(encoder_func*)ConvertRDNSequence2RFC2253,(encoder_func*)NULL,(encoder_func*)NULL,
+	(gser_decoder_func*)GDecComponentRDNSequence,(ber_decoder_func*)BDecComponentRDNSequence,
+	(comp_free_func*)NULL,(extract_component_from_id_func*)NULL,MatchingComponentRDNSequence}}, 
+{ TelephoneNumber, {}},
+{ FacsimileTelephoneNumber__telephoneNumber, {}},
+{ DirectoryString, {}},
+{ ASN_COMP_CERTIFICATE, {}},
+{ ASNTYPE_END , {}}
+};
diff --git a/contrib/slapd-modules/comp_match/authorityKeyIdentifier.asn b/contrib/slapd-modules/comp_match/authorityKeyIdentifier.asn
new file mode 100644
index 0000000..85ac92d
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/authorityKeyIdentifier.asn
@@ -0,0 +1,65 @@
+AuthorityKeyIdentifierDefinition DEFINITIONS ::=

+BEGIN

+AuthorityKeyIdentifier ::= SEQUENCE {

+    keyIdentifier             [0] IMPLICIT KeyIdentifier            OPTIONAL,

+    authorityCertIssuer       [1] IMPLICIT GeneralNames             OPTIONAL,

+    authorityCertSerialNumber [2] IMPLICIT CertificateSerialNumber  OPTIONAL }

+    -- authorityCertIssuer and authorityCertSerialNumber MUST both

+    -- be present or both be absent

+

+KeyIdentifier ::= OCTET STRING

+

+CertificateSerialNumber ::= INTEGER

+

+GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName

+

+GeneralName ::= CHOICE {

+        otherName                       [0]     OtherName,

+        rfc822Name                      [1]     IA5String,

+        dNSName                         [2]     IA5String,

+        x400Address                     [3]     ORAddress,

+        directoryName                   [4]     Name,

+        ediPartyName                    [5]     EDIPartyName,

+        uniformResourceIdentifier       [6]     IA5String,

+        iPAddress                       [7]     OCTET STRING,

+        registeredID                    [8]     OBJECT IDENTIFIER }

+

+OtherName ::= SEQUENCE {

+        type-id    OBJECT IDENTIFIER,

+        value      [0] EXPLICIT ANY DEFINED BY type-id }

+

+EDIPartyName ::= SEQUENCE {

+        nameAssigner            [0]     DirectoryString OPTIONAL,

+        partyName               [1]     DirectoryString }

+

+-- following ORAddress may not conform original def. in ASN.1

+ORAddress ::= SEQUENCE {

+-- built-in-standard-attributes BuiltInStandardAttributes,

+	type-id	OBJECT IDENTIFIER,

+-- built-in-domain-defined-attributes

+	value	ANY DEFINED BY type-id,

+-- BuiltInDomainDefinedAttributes OPTIONAL,

+-- see also teletex-domain-defined-attributes

+--extension-attributes ExtensionAttributes OPTIONAL }

+	extension	OCTET STRING OPTIONAL }

+

+

+Name ::= CHOICE {

+     rdnSequence	RDNSequence }

+

+RDNSequence ::= SEQUENCE OF RelativeDistinguishedName

+

+RelativeDistinguishedName ::= SET OF AttributeTypeAndValue

+

+AttributeTypeAndValue ::= SEQUENCE {

+     type     OBJECT IDENTIFIER,

+     value    ANY DEFINED BY type}

+

+DirectoryString ::= CHOICE {

+	teletexString	TeletexString (SIZE (1..MAX)),

+	printableString	PrintableString (SIZE (1..MAX)),

+	universalString	UniversalString (SIZE (1..MAX)),

+	utf8String	UTF8String (SIZE (1..MAX)),

+	bmpString	BMPString (SIZE (1..MAX)) }

+

+END

diff --git a/contrib/slapd-modules/comp_match/authorityKeyIdentifier.c b/contrib/slapd-modules/comp_match/authorityKeyIdentifier.c
new file mode 100644
index 0000000..84e83b8
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/authorityKeyIdentifier.c
@@ -0,0 +1,2058 @@
+/*
+ *    authorityKeyIdentifier.c
+ *    "AuthorityKeyIdentifierDefinition" ASN.1 module encode/decode/extracting/matching/free C src.
+ *    This file was generated by modified eSMACC compiler Wed Dec  8 22:22:49 2004
+ *    The generated files are supposed to be compiled as a module for OpenLDAP Software
+ */
+
+#include "authorityKeyIdentifier.h"
+
+BDecComponentAuthorityKeyIdentifierTop( void* mem_op, GenBuf* b, void *v, AsnLen* bytesDecoded,int mode) {
+	AsnTag tag;
+	AsnLen elmtLen;
+
+	tag = BDecTag ( b, bytesDecoded );
+	elmtLen = BDecLen ( b, bytesDecoded );
+	if ( elmtLen <= 0 ) return (-1);
+	if ( tag != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE) ) {
+		return (-1);
+	}
+		
+	return BDecComponentAuthorityKeyIdentifier( mem_op, b, tag, elmtLen, ( ComponentAuthorityKeyIdentifier**)v, (AsnLen*)bytesDecoded, mode );
+}
+
+
+void init_module_AuthorityKeyIdentifierDefinition() {
+	InstallOidDecoderMapping( "2.5.29.35", NULL,
+				GDecComponentAuthorityKeyIdentifier,
+				BDecComponentAuthorityKeyIdentifierTop,
+				ExtractingComponentAuthorityKeyIdentifier,
+				MatchingComponentAuthorityKeyIdentifier	);
+}
+
+int
+MatchingComponentOtherName ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentOid ( oid, (ComponentSyntaxInfo*)&((ComponentOtherName*)csi_attr)->type_id, (ComponentSyntaxInfo*)&((ComponentOtherName*)csi_assert)->type_id );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	SetAnyTypeByComponentOid ((ComponentSyntaxInfo*)&((ComponentOtherName*)csi_attr)->value, (&((ComponentOtherName*)csi_attr)->type_id));
+	rc = MatchingComponentAnyDefinedBy ( oid, (ComponentAny*)&((ComponentOtherName*)csi_attr)->value, (ComponentAny*)&((ComponentOtherName*)csi_assert)->value);
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentOtherName */
+
+void*
+ExtractingComponentOtherName ( void* mem_op, ComponentReference* cr, ComponentOtherName *comp )
+{
+
+	if ( ( comp->type_id.identifier.bv_val && strncmp(comp->type_id.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->type_id.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->type_id;
+		else
+		return NULL;
+	}
+	if ( ( comp->value.identifier.bv_val && strncmp(comp->value.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->value.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->value;
+		else
+		return NULL;
+	}
+	return NULL;
+}  /* ExtractingComponentOtherName */
+
+int
+BDecComponentOtherName PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentOtherName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	int old_mode = mode;
+	int rc;
+	ComponentOtherName *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OID_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+		rc = 	BDecComponentOid (mem_op, b, tagId1, elmtLen1, (&k->type_id), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->type_id)->identifier.bv_val = (&k->type_id)->id_buf;
+		(&k->type_id)->identifier.bv_len = strlen("type_id");
+		strcpy( (&k->type_id)->identifier.bv_val, "type_id");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (CNTX, CONS, 0))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+		rc = SetAnyTypeByComponentOid ((&k->value), (&k->type_id));
+ 	rc = BDecComponentAnyDefinedBy (mem_op,b, (&k->value), &totalElmtsLen1, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->value)->identifier.bv_val = (&k->value)->id_buf;
+		(&k->value)->identifier.bv_len = strlen("value");
+		strcpy( (&k->value)->identifier.bv_val, "value");
+	if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentOtherName*) CompAlloc( mem_op, sizeof(ComponentOtherName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentOtherName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentOtherName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentOtherName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentOtherName;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecOtherName*/
+
+int
+GDecComponentOtherName PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentOtherName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentOtherName *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "type_id", strlen("type_id") ) == 0 ) {
+		rc = 	GDecComponentOid (mem_op, b, (&k->type_id), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->type_id)->identifier.bv_val = peek_head;
+	(&k->type_id)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "value", strlen("value") ) == 0 ) {
+		rc = SetAnyTypeByComponentOid ((&k->value), (&k->type_id));
+	rc = GDecComponentAnyDefinedBy (mem_op, b, (&k->value), bytesDecoded, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->value)->identifier.bv_val = peek_head;
+	(&k->value)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentOtherName*) CompAlloc( mem_op, sizeof(ComponentOtherName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentOtherName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentOtherName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentOtherName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentOtherName;
+	return LDAP_SUCCESS;
+}  /* GDecOtherName*/
+
+
+int
+MatchingComponentORAddress ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentOid ( oid, (ComponentSyntaxInfo*)&((ComponentORAddress*)csi_attr)->type_id, (ComponentSyntaxInfo*)&((ComponentORAddress*)csi_assert)->type_id );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	SetAnyTypeByComponentOid ((ComponentSyntaxInfo*)&((ComponentORAddress*)csi_attr)->value, (&((ComponentORAddress*)csi_attr)->type_id));
+	rc = MatchingComponentAnyDefinedBy ( oid, (ComponentAny*)&((ComponentORAddress*)csi_attr)->value, (ComponentAny*)&((ComponentORAddress*)csi_assert)->value);
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentOcts ( oid, (ComponentSyntaxInfo*)&((ComponentORAddress*)csi_attr)->extension, (ComponentSyntaxInfo*)&((ComponentORAddress*)csi_assert)->extension );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentORAddress */
+
+void*
+ExtractingComponentORAddress ( void* mem_op, ComponentReference* cr, ComponentORAddress *comp )
+{
+
+	if ( ( comp->type_id.identifier.bv_val && strncmp(comp->type_id.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->type_id.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->type_id;
+		else
+		return NULL;
+	}
+	if ( ( comp->value.identifier.bv_val && strncmp(comp->value.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->value.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->value;
+		else
+		return NULL;
+	}
+	if ( ( comp->extension.identifier.bv_val && strncmp(comp->extension.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->extension.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->extension;
+		else
+		return NULL;
+	}
+	return NULL;
+}  /* ExtractingComponentORAddress */
+
+int
+BDecComponentORAddress PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentORAddress **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentORAddress *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OID_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+		rc = 	BDecComponentOid (mem_op, b, tagId1, elmtLen1, (&k->type_id), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->type_id)->identifier.bv_val = (&k->type_id)->id_buf;
+		(&k->type_id)->identifier.bv_len = strlen("type_id");
+		strcpy( (&k->type_id)->identifier.bv_val, "type_id");
+    }
+    else
+        return -1;
+
+
+
+    {
+		rc = SetAnyTypeByComponentOid ((&k->value), (&k->type_id));
+ 	rc = BDecComponentAnyDefinedBy (mem_op,b, (&k->value), &totalElmtsLen1, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->value)->identifier.bv_val = (&k->value)->id_buf;
+		(&k->value)->identifier.bv_len = strlen("value");
+		strcpy( (&k->value)->identifier.bv_val, "value");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OCTETSTRING_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, OCTETSTRING_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+		rc = 	BDecComponentOcts (mem_op, b, tagId1, elmtLen1, (&k->extension), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->extension)->identifier.bv_val = (&k->extension)->id_buf;
+		(&k->extension)->identifier.bv_len = strlen("extension");
+		strcpy( (&k->extension)->identifier.bv_val, "extension");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentORAddress*) CompAlloc( mem_op, sizeof(ComponentORAddress) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentORAddress ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentORAddress ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentORAddress;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentORAddress;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecORAddress*/
+
+int
+GDecComponentORAddress PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentORAddress **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentORAddress *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "type_id", strlen("type_id") ) == 0 ) {
+		rc = 	GDecComponentOid (mem_op, b, (&k->type_id), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->type_id)->identifier.bv_val = peek_head;
+	(&k->type_id)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "value", strlen("value") ) == 0 ) {
+		rc = SetAnyTypeByComponentOid ((&k->value), (&k->type_id));
+	rc = GDecComponentAnyDefinedBy (mem_op, b, (&k->value), bytesDecoded, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->value)->identifier.bv_val = peek_head;
+	(&k->value)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "extension", strlen("extension") ) == 0 ) {
+		rc = 	GDecComponentOcts (mem_op, b, (&k->extension), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->extension)->identifier.bv_val = peek_head;
+	(&k->extension)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentORAddress*) CompAlloc( mem_op, sizeof(ComponentORAddress) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentORAddress ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentORAddress ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentORAddress;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentORAddress;
+	return LDAP_SUCCESS;
+}  /* GDecORAddress*/
+
+
+int
+MatchingComponentDirectoryString ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	ComponentDirectoryString *v1, *v2;
+
+
+	v1 = (ComponentDirectoryString*)csi_attr;
+	v2 = (ComponentDirectoryString*)csi_assert;
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	if( (v1->choiceId != v2->choiceId ) )
+		return LDAP_COMPARE_FALSE;
+	switch( v1->choiceId )
+	{
+	   case DIRECTORYSTRING_TELETEXSTRING :
+		rc = 	MatchingComponentTeletexString ( oid, (ComponentSyntaxInfo*)(v1->a.teletexString), (ComponentSyntaxInfo*)(v2->a.teletexString) );
+		break;
+	   case DIRECTORYSTRING_PRINTABLESTRING :
+		rc = 	MatchingComponentPrintableString ( oid, (ComponentSyntaxInfo*)(v1->a.printableString), (ComponentSyntaxInfo*)(v2->a.printableString) );
+		break;
+	   case DIRECTORYSTRING_UNIVERSALSTRING :
+		rc = 	MatchingComponentUniversalString ( oid, (ComponentSyntaxInfo*)(v1->a.universalString), (ComponentSyntaxInfo*)(v2->a.universalString) );
+		break;
+	   case DIRECTORYSTRING_UTF8STRING :
+		rc = 	MatchingComponentUTF8String ( oid, (ComponentSyntaxInfo*)(v1->a.utf8String), (ComponentSyntaxInfo*)(v2->a.utf8String) );
+		break;
+	   case DIRECTORYSTRING_BMPSTRING :
+		rc = 	MatchingComponentBMPString ( oid, (ComponentSyntaxInfo*)(v1->a.bmpString), (ComponentSyntaxInfo*)(v2->a.bmpString) );
+		break;
+	default : 
+		 return LDAP_PROTOCOL_ERROR;
+	}
+	return rc;
+}  /* BMatchingComponentDirectoryStringContent */
+
+void*
+ExtractingComponentDirectoryString ( void* mem_op, ComponentReference* cr, ComponentDirectoryString *comp )
+{
+
+
+	if( (comp->choiceId) ==  DIRECTORYSTRING_TELETEXSTRING &&
+		 (( comp->a.teletexString->identifier.bv_val && strncmp(comp->a.teletexString->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.teletexString->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.teletexString);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTeletexString ( mem_op, cr, (comp->a.teletexString) );
+		};
+	}
+	if( (comp->choiceId) ==  DIRECTORYSTRING_PRINTABLESTRING &&
+		 (( comp->a.printableString->identifier.bv_val && strncmp(comp->a.printableString->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.printableString->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.printableString);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentPrintableString ( mem_op, cr, (comp->a.printableString) );
+		};
+	}
+	if( (comp->choiceId) ==  DIRECTORYSTRING_UNIVERSALSTRING &&
+		 (( comp->a.universalString->identifier.bv_val && strncmp(comp->a.universalString->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.universalString->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.universalString);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentUniversalString ( mem_op, cr, (comp->a.universalString) );
+		};
+	}
+	if( (comp->choiceId) ==  DIRECTORYSTRING_UTF8STRING &&
+		 (( comp->a.utf8String->identifier.bv_val && strncmp(comp->a.utf8String->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.utf8String->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.utf8String);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentUTF8String ( mem_op, cr, (comp->a.utf8String) );
+		};
+	}
+	if( (comp->choiceId) ==  DIRECTORYSTRING_BMPSTRING &&
+		 (( comp->a.bmpString->identifier.bv_val && strncmp(comp->a.bmpString->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.bmpString->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.bmpString);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentBMPString ( mem_op, cr, (comp->a.bmpString) );
+		};
+	}
+	return NULL;
+}  /* ExtractingComponentDirectoryString */
+
+int
+BDecComponentDirectoryString PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentDirectoryString **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentDirectoryString *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    switch (tagId0)
+    {
+       case MAKE_TAG_ID (UNIV, PRIM, TELETEXSTRING_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, TELETEXSTRING_TAG_CODE):
+        (k->choiceId) = DIRECTORYSTRING_TELETEXSTRING;
+		rc = 	BDecComponentTeletexString (mem_op, b, tagId0, elmtLen0, (&k->a.teletexString), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.teletexString)->identifier.bv_val = (k->a.teletexString)->id_buf;
+		(k->a.teletexString)->identifier.bv_len = strlen("teletexString");
+		strcpy( (k->a.teletexString)->identifier.bv_val, "teletexString");
+    break;
+
+       case MAKE_TAG_ID (UNIV, PRIM, PRINTABLESTRING_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, PRINTABLESTRING_TAG_CODE):
+        (k->choiceId) = DIRECTORYSTRING_PRINTABLESTRING;
+		rc = 	BDecComponentPrintableString (mem_op, b, tagId0, elmtLen0, (&k->a.printableString), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.printableString)->identifier.bv_val = (k->a.printableString)->id_buf;
+		(k->a.printableString)->identifier.bv_len = strlen("printableString");
+		strcpy( (k->a.printableString)->identifier.bv_val, "printableString");
+    break;
+
+       case MAKE_TAG_ID (UNIV, PRIM, UNIVERSALSTRING_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, UNIVERSALSTRING_TAG_CODE):
+        (k->choiceId) = DIRECTORYSTRING_UNIVERSALSTRING;
+		rc = 	BDecComponentUniversalString (mem_op, b, tagId0, elmtLen0, (&k->a.universalString), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.universalString)->identifier.bv_val = (k->a.universalString)->id_buf;
+		(k->a.universalString)->identifier.bv_len = strlen("universalString");
+		strcpy( (k->a.universalString)->identifier.bv_val, "universalString");
+    break;
+
+       case MAKE_TAG_ID (UNIV, PRIM, UTF8STRING_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, UTF8STRING_TAG_CODE):
+        (k->choiceId) = DIRECTORYSTRING_UTF8STRING;
+		rc = 	BDecComponentUTF8String (mem_op, b, tagId0, elmtLen0, (&k->a.utf8String), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.utf8String)->identifier.bv_val = (k->a.utf8String)->id_buf;
+		(k->a.utf8String)->identifier.bv_len = strlen("utf8String");
+		strcpy( (k->a.utf8String)->identifier.bv_val, "utf8String");
+    break;
+
+       case MAKE_TAG_ID (UNIV, PRIM, BMPSTRING_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, BMPSTRING_TAG_CODE):
+        (k->choiceId) = DIRECTORYSTRING_BMPSTRING;
+		rc = 	BDecComponentBMPString (mem_op, b, tagId0, elmtLen0, (&k->a.bmpString), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.bmpString)->identifier.bv_val = (k->a.bmpString)->id_buf;
+		(k->a.bmpString)->identifier.bv_len = strlen("bmpString");
+		strcpy( (k->a.bmpString)->identifier.bv_val, "bmpString");
+    break;
+
+    default:
+        Asn1Error ("ERROR - unexpected tag in CHOICE\n");
+        return -1;
+        break;
+    } /* end switch */
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentDirectoryString*) CompAlloc( mem_op, sizeof(ComponentDirectoryString) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentDirectoryString ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentDirectoryString ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentDirectoryString;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentDirectoryString;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecDirectoryStringContent */
+
+int
+GDecComponentDirectoryString PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentDirectoryString **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentDirectoryString *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen2 = LocateNextGSERToken(mem_op,b,&peek_head2,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head2 != ':'){
+		Asn1Error("Missing : in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( strncmp("teletexString",peek_head, strlen("teletexString")) == 0){
+		(k->choiceId) = DIRECTORYSTRING_TELETEXSTRING;
+		rc = 	GDecComponentTeletexString (mem_op, b, (&k->a.teletexString), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.teletexString)->identifier.bv_val = peek_head;
+		(k->a.teletexString)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("printableString",peek_head,strlen("printableString")) == 0){
+		(k->choiceId) = DIRECTORYSTRING_PRINTABLESTRING;
+		rc = 	GDecComponentPrintableString (mem_op, b, (&k->a.printableString), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.printableString)->identifier.bv_val = peek_head;
+		(k->a.printableString)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("universalString",peek_head,strlen("universalString")) == 0){
+		(k->choiceId) = DIRECTORYSTRING_UNIVERSALSTRING;
+		rc = 	GDecComponentUniversalString (mem_op, b, (&k->a.universalString), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.universalString)->identifier.bv_val = peek_head;
+		(k->a.universalString)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("utf8String",peek_head,strlen("utf8String")) == 0){
+		(k->choiceId) = DIRECTORYSTRING_UTF8STRING;
+		rc = 	GDecComponentUTF8String (mem_op, b, (&k->a.utf8String), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.utf8String)->identifier.bv_val = peek_head;
+		(k->a.utf8String)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("bmpString",peek_head,strlen("bmpString")) == 0){
+		(k->choiceId) = DIRECTORYSTRING_BMPSTRING;
+		rc = 	GDecComponentBMPString (mem_op, b, (&k->a.bmpString), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.bmpString)->identifier.bv_val = peek_head;
+		(k->a.bmpString)->identifier.bv_len = strLen;
+	}
+	else {
+		Asn1Error("Undefined Identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentDirectoryString*) CompAlloc( mem_op, sizeof(ComponentDirectoryString) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentDirectoryString ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentDirectoryString ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentDirectoryString;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentDirectoryString;
+	return LDAP_SUCCESS;
+}  /* GDecDirectoryStringContent */
+
+
+int
+MatchingComponentEDIPartyName ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	if(COMPONENTNOT_NULL( ((ComponentEDIPartyName*)csi_attr)->nameAssigner ) ) {
+	rc =	MatchingComponentDirectoryString ( oid, (ComponentSyntaxInfo*)((ComponentEDIPartyName*)csi_attr)->nameAssigner, (ComponentSyntaxInfo*)((ComponentEDIPartyName*)csi_assert)->nameAssigner );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	rc =	MatchingComponentDirectoryString ( oid, (ComponentSyntaxInfo*)((ComponentEDIPartyName*)csi_attr)->partyName, (ComponentSyntaxInfo*)((ComponentEDIPartyName*)csi_assert)->partyName );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentEDIPartyName */
+
+void*
+ExtractingComponentEDIPartyName ( void* mem_op, ComponentReference* cr, ComponentEDIPartyName *comp )
+{
+
+	if ( ( comp->nameAssigner->identifier.bv_val && strncmp(comp->nameAssigner->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->nameAssigner->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->nameAssigner;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentDirectoryString ( mem_op, cr, comp->nameAssigner );
+		}
+	}
+	if ( ( comp->partyName->identifier.bv_val && strncmp(comp->partyName->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->partyName->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->partyName;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentDirectoryString ( mem_op, cr, comp->partyName );
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentEDIPartyName */
+
+int
+BDecComponentEDIPartyName PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentEDIPartyName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	AsnLen totalElmtsLen3 = 0;
+	AsnLen elmtLen3;
+	AsnTag tagId3;
+	int old_mode = mode;
+	int rc;
+	ComponentEDIPartyName *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (CNTX, CONS, 0))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+		rc =     tagId2 = BDecTag (b, &totalElmtsLen1 );
+    elmtLen2 = BDecLen (b, &totalElmtsLen1 );
+	BDecComponentDirectoryString (mem_op, b, tagId2, elmtLen2, (&k->nameAssigner), &totalElmtsLen1, mode);
+    if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc(b, &totalElmtsLen1 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->nameAssigner)->identifier.bv_val = (k->nameAssigner)->id_buf;
+		(k->nameAssigner)->identifier.bv_len = strlen("nameAssigner");
+		strcpy( (k->nameAssigner)->identifier.bv_val, "nameAssigner");
+	if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+
+
+    if (((tagId1 == MAKE_TAG_ID (CNTX, CONS, 1))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+		rc =     tagId2 = BDecTag (b, &totalElmtsLen1 );
+    elmtLen2 = BDecLen (b, &totalElmtsLen1 );
+	BDecComponentDirectoryString (mem_op, b, tagId2, elmtLen2, (&k->partyName), &totalElmtsLen1, mode);
+    if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc(b, &totalElmtsLen1 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->partyName)->identifier.bv_val = (k->partyName)->id_buf;
+		(k->partyName)->identifier.bv_len = strlen("partyName");
+		strcpy( (k->partyName)->identifier.bv_val, "partyName");
+	if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentEDIPartyName*) CompAlloc( mem_op, sizeof(ComponentEDIPartyName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentEDIPartyName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentEDIPartyName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentEDIPartyName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentEDIPartyName;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecEDIPartyName*/
+
+int
+GDecComponentEDIPartyName PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentEDIPartyName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentEDIPartyName *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "nameAssigner", strlen("nameAssigner") ) == 0 ) {
+		rc = 	GDecComponentDirectoryString (mem_op, b, (&k->nameAssigner), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->nameAssigner)->identifier.bv_val = peek_head;
+	( k->nameAssigner)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "partyName", strlen("partyName") ) == 0 ) {
+		rc = 	GDecComponentDirectoryString (mem_op, b, (&k->partyName), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->partyName)->identifier.bv_val = peek_head;
+	( k->partyName)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentEDIPartyName*) CompAlloc( mem_op, sizeof(ComponentEDIPartyName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentEDIPartyName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentEDIPartyName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentEDIPartyName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentEDIPartyName;
+	return LDAP_SUCCESS;
+}  /* GDecEDIPartyName*/
+
+
+
+int
+MatchingComponentGeneralName ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	ComponentGeneralName *v1, *v2;
+
+
+	v1 = (ComponentGeneralName*)csi_attr;
+	v2 = (ComponentGeneralName*)csi_assert;
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	if( (v1->choiceId != v2->choiceId ) )
+		return LDAP_COMPARE_FALSE;
+	switch( v1->choiceId )
+	{
+	   case GENERALNAME_OTHERNAME :
+		rc = 	MatchingComponentOtherName ( oid, (ComponentSyntaxInfo*)(v1->a.otherName), (ComponentSyntaxInfo*)(v2->a.otherName) );
+		break;
+	   case GENERALNAME_RFC822NAME :
+		rc = 	MatchingComponentIA5String ( oid, (ComponentSyntaxInfo*)(v1->a.rfc822Name), (ComponentSyntaxInfo*)(v2->a.rfc822Name) );
+		break;
+	   case GENERALNAME_DNSNAME :
+		rc = 	MatchingComponentIA5String ( oid, (ComponentSyntaxInfo*)(v1->a.dNSName), (ComponentSyntaxInfo*)(v2->a.dNSName) );
+		break;
+	   case GENERALNAME_X400ADDRESS :
+		rc = 	MatchingComponentORAddress ( oid, (ComponentSyntaxInfo*)(v1->a.x400Address), (ComponentSyntaxInfo*)(v2->a.x400Address) );
+		break;
+	   case GENERALNAME_DIRECTORYNAME :
+		rc = 	MatchingComponentName ( oid, (ComponentSyntaxInfo*)(v1->a.directoryName), (ComponentSyntaxInfo*)(v2->a.directoryName) );
+		break;
+	   case GENERALNAME_EDIPARTYNAME :
+		rc = 	MatchingComponentEDIPartyName ( oid, (ComponentSyntaxInfo*)(v1->a.ediPartyName), (ComponentSyntaxInfo*)(v2->a.ediPartyName) );
+		break;
+	   case GENERALNAME_UNIFORMRESOURCEIDENTIFIER :
+		rc = 	MatchingComponentIA5String ( oid, (ComponentSyntaxInfo*)(v1->a.uniformResourceIdentifier), (ComponentSyntaxInfo*)(v2->a.uniformResourceIdentifier) );
+		break;
+	   case GENERALNAME_IPADDRESS :
+		rc = 	MatchingComponentOcts ( oid, (ComponentSyntaxInfo*)(v1->a.iPAddress), (ComponentSyntaxInfo*)(v2->a.iPAddress) );
+		break;
+	   case GENERALNAME_REGISTEREDID :
+		rc = 	MatchingComponentOid ( oid, (ComponentSyntaxInfo*)(v1->a.registeredID), (ComponentSyntaxInfo*)(v2->a.registeredID) );
+		break;
+	default : 
+		 return LDAP_PROTOCOL_ERROR;
+	}
+	return rc;
+}  /* BMatchingComponentGeneralNameContent */
+
+void*
+ExtractingComponentGeneralName ( void* mem_op, ComponentReference* cr, ComponentGeneralName *comp )
+{
+
+
+	if( (comp->choiceId) ==  GENERALNAME_OTHERNAME &&
+		 (( comp->a.otherName->identifier.bv_val && strncmp(comp->a.otherName->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.otherName->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.otherName);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentOtherName ( mem_op, cr, (comp->a.otherName) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_RFC822NAME &&
+		 (( comp->a.rfc822Name->identifier.bv_val && strncmp(comp->a.rfc822Name->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.rfc822Name->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.rfc822Name);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentIA5String ( mem_op, cr, (comp->a.rfc822Name) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_DNSNAME &&
+		 (( comp->a.dNSName->identifier.bv_val && strncmp(comp->a.dNSName->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.dNSName->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.dNSName);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentIA5String ( mem_op, cr, (comp->a.dNSName) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_X400ADDRESS &&
+		 (( comp->a.x400Address->identifier.bv_val && strncmp(comp->a.x400Address->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.x400Address->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.x400Address);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentORAddress ( mem_op, cr, (comp->a.x400Address) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_DIRECTORYNAME &&
+		 (( comp->a.directoryName->identifier.bv_val && strncmp(comp->a.directoryName->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.directoryName->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.directoryName);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentName ( mem_op, cr, (comp->a.directoryName) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_EDIPARTYNAME &&
+		 (( comp->a.ediPartyName->identifier.bv_val && strncmp(comp->a.ediPartyName->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.ediPartyName->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.ediPartyName);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentEDIPartyName ( mem_op, cr, (comp->a.ediPartyName) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_UNIFORMRESOURCEIDENTIFIER &&
+		 (( comp->a.uniformResourceIdentifier->identifier.bv_val && strncmp(comp->a.uniformResourceIdentifier->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.uniformResourceIdentifier->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.uniformResourceIdentifier);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentIA5String ( mem_op, cr, (comp->a.uniformResourceIdentifier) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_IPADDRESS &&
+		 (( comp->a.iPAddress->identifier.bv_val && strncmp(comp->a.iPAddress->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.iPAddress->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.iPAddress);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentOcts ( mem_op, cr, (comp->a.iPAddress) );
+		};
+	}
+	if( (comp->choiceId) ==  GENERALNAME_REGISTEREDID &&
+		 (( comp->a.registeredID->identifier.bv_val && strncmp(comp->a.registeredID->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.registeredID->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.registeredID);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentOid ( mem_op, cr, (comp->a.registeredID) );
+		};
+	}
+	return NULL;
+}  /* ExtractingComponentGeneralName */
+
+int
+BDecComponentGeneralName PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentGeneralName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	AsnLen totalElmtsLen3 = 0;
+	AsnLen elmtLen3;
+	AsnTag tagId3;
+	int old_mode = mode;
+	int rc;
+	ComponentGeneralName *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    switch (tagId0)
+    {
+       case MAKE_TAG_ID (CNTX, CONS, 0):
+if (BDecTag (b, &totalElmtsLen1 ) != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_OTHERNAME;
+		rc = 	BDecComponentOtherName (mem_op, b, tagId1, elmtLen1, (&k->a.otherName), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.otherName)->identifier.bv_val = (k->a.otherName)->id_buf;
+		(k->a.otherName)->identifier.bv_len = strlen("otherName");
+		strcpy( (k->a.otherName)->identifier.bv_val, "otherName");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 1):
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+if ((tagId1 != MAKE_TAG_ID (UNIV, PRIM, IA5STRING_TAG_CODE)) &&
+   (tagId1 != MAKE_TAG_ID (UNIV, CONS, IA5STRING_TAG_CODE)))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_RFC822NAME;
+		rc = 	BDecComponentIA5String (mem_op, b, tagId1, elmtLen1, (&k->a.rfc822Name), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.rfc822Name)->identifier.bv_val = (k->a.rfc822Name)->id_buf;
+		(k->a.rfc822Name)->identifier.bv_len = strlen("rfc822Name");
+		strcpy( (k->a.rfc822Name)->identifier.bv_val, "rfc822Name");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 2):
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+if ((tagId1 != MAKE_TAG_ID (UNIV, PRIM, IA5STRING_TAG_CODE)) &&
+   (tagId1 != MAKE_TAG_ID (UNIV, CONS, IA5STRING_TAG_CODE)))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_DNSNAME;
+		rc = 	BDecComponentIA5String (mem_op, b, tagId1, elmtLen1, (&k->a.dNSName), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.dNSName)->identifier.bv_val = (k->a.dNSName)->id_buf;
+		(k->a.dNSName)->identifier.bv_len = strlen("dNSName");
+		strcpy( (k->a.dNSName)->identifier.bv_val, "dNSName");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 3):
+if (BDecTag (b, &totalElmtsLen1 ) != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_X400ADDRESS;
+		rc = 	BDecComponentORAddress (mem_op, b, tagId1, elmtLen1, (&k->a.x400Address), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.x400Address)->identifier.bv_val = (k->a.x400Address)->id_buf;
+		(k->a.x400Address)->identifier.bv_len = strlen("x400Address");
+		strcpy( (k->a.x400Address)->identifier.bv_val, "x400Address");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 4):
+        (k->choiceId) = GENERALNAME_DIRECTORYNAME;
+		tagId1 = BDecTag (b, &totalElmtsLen1 );
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentName (mem_op, b, tagId1, elmtLen1, (&k->a.directoryName), &totalElmtsLen1, mode);
+    if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc(b, &totalElmtsLen1 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.directoryName)->identifier.bv_val = (k->a.directoryName)->id_buf;
+		(k->a.directoryName)->identifier.bv_len = strlen("directoryName");
+		strcpy( (k->a.directoryName)->identifier.bv_val, "directoryName");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 5):
+if (BDecTag (b, &totalElmtsLen1 ) != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_EDIPARTYNAME;
+		rc = 	BDecComponentEDIPartyName (mem_op, b, tagId1, elmtLen1, (&k->a.ediPartyName), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.ediPartyName)->identifier.bv_val = (k->a.ediPartyName)->id_buf;
+		(k->a.ediPartyName)->identifier.bv_len = strlen("ediPartyName");
+		strcpy( (k->a.ediPartyName)->identifier.bv_val, "ediPartyName");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 6):
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+if ((tagId1 != MAKE_TAG_ID (UNIV, PRIM, IA5STRING_TAG_CODE)) &&
+   (tagId1 != MAKE_TAG_ID (UNIV, CONS, IA5STRING_TAG_CODE)))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_UNIFORMRESOURCEIDENTIFIER;
+		rc = 	BDecComponentIA5String (mem_op, b, tagId1, elmtLen1, (&k->a.uniformResourceIdentifier), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.uniformResourceIdentifier)->identifier.bv_val = (k->a.uniformResourceIdentifier)->id_buf;
+		(k->a.uniformResourceIdentifier)->identifier.bv_len = strlen("uniformResourceIdentifier");
+		strcpy( (k->a.uniformResourceIdentifier)->identifier.bv_val, "uniformResourceIdentifier");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 7):
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+if ((tagId1 != MAKE_TAG_ID (UNIV, PRIM, OCTETSTRING_TAG_CODE)) &&
+   (tagId1 != MAKE_TAG_ID (UNIV, CONS, OCTETSTRING_TAG_CODE)))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_IPADDRESS;
+		rc = 	BDecComponentOcts (mem_op, b, tagId1, elmtLen1, (&k->a.iPAddress), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.iPAddress)->identifier.bv_val = (k->a.iPAddress)->id_buf;
+		(k->a.iPAddress)->identifier.bv_len = strlen("iPAddress");
+		strcpy( (k->a.iPAddress)->identifier.bv_val, "iPAddress");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+       case MAKE_TAG_ID (CNTX, CONS, 8):
+if (BDecTag (b, &totalElmtsLen1 ) != MAKE_TAG_ID (UNIV, PRIM, OID_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        (k->choiceId) = GENERALNAME_REGISTEREDID;
+		rc = 	BDecComponentOid (mem_op, b, tagId1, elmtLen1, (&k->a.registeredID), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.registeredID)->identifier.bv_val = (k->a.registeredID)->id_buf;
+		(k->a.registeredID)->identifier.bv_len = strlen("registeredID");
+		strcpy( (k->a.registeredID)->identifier.bv_val, "registeredID");
+	if (elmtLen0 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    break;
+
+    default:
+        Asn1Error ("ERROR - unexpected tag in CHOICE\n");
+        return -1;
+        break;
+    } /* end switch */
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentGeneralName*) CompAlloc( mem_op, sizeof(ComponentGeneralName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentGeneralName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentGeneralName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentGeneralName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentGeneralName;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecGeneralNameContent */
+
+int
+GDecComponentGeneralName PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentGeneralName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentGeneralName *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen2 = LocateNextGSERToken(mem_op,b,&peek_head2,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head2 != ':'){
+		Asn1Error("Missing : in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( strncmp("otherName",peek_head, strlen("otherName")) == 0){
+		(k->choiceId) = GENERALNAME_OTHERNAME;
+		rc = 	GDecComponentOtherName (mem_op, b, (&k->a.otherName), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.otherName)->identifier.bv_val = peek_head;
+		(k->a.otherName)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("rfc822Name",peek_head,strlen("rfc822Name")) == 0){
+		(k->choiceId) = GENERALNAME_RFC822NAME;
+		rc = 	GDecComponentIA5String (mem_op, b, (&k->a.rfc822Name), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.rfc822Name)->identifier.bv_val = peek_head;
+		(k->a.rfc822Name)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("dNSName",peek_head,strlen("dNSName")) == 0){
+		(k->choiceId) = GENERALNAME_DNSNAME;
+		rc = 	GDecComponentIA5String (mem_op, b, (&k->a.dNSName), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.dNSName)->identifier.bv_val = peek_head;
+		(k->a.dNSName)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("x400Address",peek_head,strlen("x400Address")) == 0){
+		(k->choiceId) = GENERALNAME_X400ADDRESS;
+		rc = 	GDecComponentORAddress (mem_op, b, (&k->a.x400Address), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.x400Address)->identifier.bv_val = peek_head;
+		(k->a.x400Address)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("directoryName",peek_head,strlen("directoryName")) == 0){
+		(k->choiceId) = GENERALNAME_DIRECTORYNAME;
+		rc = 	GDecComponentName (mem_op, b, (&k->a.directoryName), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.directoryName)->identifier.bv_val = peek_head;
+		(k->a.directoryName)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("ediPartyName",peek_head,strlen("ediPartyName")) == 0){
+		(k->choiceId) = GENERALNAME_EDIPARTYNAME;
+		rc = 	GDecComponentEDIPartyName (mem_op, b, (&k->a.ediPartyName), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.ediPartyName)->identifier.bv_val = peek_head;
+		(k->a.ediPartyName)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("uniformResourceIdentifier",peek_head,strlen("uniformResourceIdentifier")) == 0){
+		(k->choiceId) = GENERALNAME_UNIFORMRESOURCEIDENTIFIER;
+		rc = 	GDecComponentIA5String (mem_op, b, (&k->a.uniformResourceIdentifier), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.uniformResourceIdentifier)->identifier.bv_val = peek_head;
+		(k->a.uniformResourceIdentifier)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("iPAddress",peek_head,strlen("iPAddress")) == 0){
+		(k->choiceId) = GENERALNAME_IPADDRESS;
+		rc = 	GDecComponentOcts (mem_op, b, (&k->a.iPAddress), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.iPAddress)->identifier.bv_val = peek_head;
+		(k->a.iPAddress)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("registeredID",peek_head,strlen("registeredID")) == 0){
+		(k->choiceId) = GENERALNAME_REGISTEREDID;
+		rc = 	GDecComponentOid (mem_op, b, (&k->a.registeredID), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.registeredID)->identifier.bv_val = peek_head;
+		(k->a.registeredID)->identifier.bv_len = strLen;
+	}
+	else {
+		Asn1Error("Undefined Identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentGeneralName*) CompAlloc( mem_op, sizeof(ComponentGeneralName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentGeneralName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentGeneralName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentGeneralName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentGeneralName;
+	return LDAP_SUCCESS;
+}  /* GDecGeneralNameContent */
+
+
+int
+MatchingComponentGeneralNames ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	void* component1, *component2;
+	AsnList *v1, *v2, t_list;
+
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	v1 = &((ComponentGeneralNames*)csi_attr)->comp_list;
+	v2 = &((ComponentGeneralNames*)csi_assert)->comp_list;
+	FOR_EACH_LIST_PAIR_ELMT(component1, component2, v1, v2)
+	{
+		if( MatchingComponentGeneralName(oid, (ComponentSyntaxInfo*)component1, (ComponentSyntaxInfo*)component2) == LDAP_COMPARE_FALSE) {
+			return LDAP_COMPARE_FALSE;
+		}
+	} /* end of for */
+
+	AsnListFirst( v1 );
+	AsnListFirst( v2 );
+	if( (!component1 && component2) || (component1 && !component2))
+		return LDAP_COMPARE_FALSE;
+	else
+		return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentGeneralNamesContent */
+
+void*
+ExtractingComponentGeneralNames ( void* mem_op, ComponentReference* cr, ComponentGeneralNames *comp )
+{
+	int count = 0;
+	int total;
+	AsnList *v = &comp->comp_list;
+	ComponentInt *k;
+	ComponentGeneralName *component;
+
+
+	switch ( cr->cr_curr->ci_type ) {
+	case LDAP_COMPREF_FROM_BEGINNING :
+		count = cr->cr_curr->ci_val.ci_from_beginning;
+		FOR_EACH_LIST_ELMT( component , v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL )
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentGeneralName ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_FROM_END :
+		total = AsnListCount ( v );
+		count = cr->cr_curr->ci_val.ci_from_end;
+		count = total + count +1;
+		FOR_EACH_LIST_ELMT ( component, v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL ) 
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentGeneralName ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_ALL :
+		return comp;
+	case LDAP_COMPREF_COUNT :
+		k = (ComponentInt*)CompAlloc( mem_op, sizeof(ComponentInt));
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		k->comp_desc->cd_tag = (-1);
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentInt;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentInt;
+		k->comp_desc->cd_extract_i = (extract_component_from_id_func*)NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_INTEGER;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentInt;
+		k->value = AsnListCount(v);
+		return k;
+	default :
+		return NULL;
+	}
+}  /* ExtractingComponentGeneralNames */
+
+int
+BDecComponentGeneralNames PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentGeneralNames **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentGeneralNames *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit(&k->comp_list,sizeof(ComponentGeneralName));
+    for (totalElmtsLen1 = 0; (totalElmtsLen1 < elmtLen0) || (elmtLen0 == INDEFINITE_LEN);)
+    {
+        ComponentGeneralName **tmpVar;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if ((tagId1 == EOC_TAG_ID) && (elmtLen0 == INDEFINITE_LEN))
+    {
+        BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+        break; /* got EOC so can exit this SET OF/SEQ OF's for loop*/
+    }
+        elmtLen1 = BDecLen (b, &totalElmtsLen1);
+    tmpVar = (ComponentGeneralName**) CompAsnListAppend (mem_op,&k->comp_list);
+		rc = 	BDecComponentGeneralName (mem_op, b, tagId1, elmtLen1, tmpVar, &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+    } /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentGeneralNames*) CompAlloc( mem_op, sizeof(ComponentGeneralNames) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentGeneralNames ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentGeneralNames ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentGeneralNames;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentGeneralNames;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecGeneralNamesContent */
+
+int
+GDecComponentGeneralNames PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentGeneralNames **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentGeneralNames *k,*t, c_temp;
+
+
+	int ElmtsLen1;
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit( &k->comp_list, sizeof( ComponentGeneralName ) );
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_PEEK)) ){
+		Asn1Error("Error during Reading { in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	for (ElmtsLen1 = 0; ElmtsLen1 >= INDEFINITE_LEN; ElmtsLen1++)
+	{
+		ComponentGeneralName **tmpVar;
+		if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_NO_COPY)) ){
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		if(*peek_head == '}') break;
+		if( !(*peek_head == '{' || *peek_head ==',') ) {
+			return LDAP_PROTOCOL_ERROR;
+		}
+		tmpVar = (ComponentGeneralName**) CompAsnListAppend (mem_op, &k->comp_list);
+		if ( tmpVar == NULL ) {
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		rc = 	GDecComponentGeneralName (mem_op, b, tmpVar, bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	} /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentGeneralNames*) CompAlloc( mem_op, sizeof(ComponentGeneralNames) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentGeneralNames ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentGeneralNames ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentGeneralNames;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentGeneralNames;
+	return LDAP_SUCCESS;
+}  /* GDecGeneralNamesContent */
+
+
+int
+MatchingComponentAuthorityKeyIdentifier ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentKeyIdentifier ( oid, (ComponentSyntaxInfo*)&((ComponentAuthorityKeyIdentifier*)csi_attr)->keyIdentifier, (ComponentSyntaxInfo*)&((ComponentAuthorityKeyIdentifier*)csi_assert)->keyIdentifier );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	if(COMPONENTNOT_NULL( ((ComponentAuthorityKeyIdentifier*)csi_attr)->authorityCertIssuer ) ) {
+	rc =	MatchingComponentGeneralNames ( oid, (ComponentSyntaxInfo*)((ComponentAuthorityKeyIdentifier*)csi_attr)->authorityCertIssuer, (ComponentSyntaxInfo*)((ComponentAuthorityKeyIdentifier*)csi_assert)->authorityCertIssuer );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	if(COMPONENTNOT_NULL( ((ComponentAuthorityKeyIdentifier*)csi_attr)->authorityCertSerialNumber ) ) {
+	rc =	MatchingComponentCertificateSerialNumber ( oid, (ComponentSyntaxInfo*)((ComponentAuthorityKeyIdentifier*)csi_attr)->authorityCertSerialNumber, (ComponentSyntaxInfo*)((ComponentAuthorityKeyIdentifier*)csi_assert)->authorityCertSerialNumber );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentAuthorityKeyIdentifier */
+
+void*
+ExtractingComponentAuthorityKeyIdentifier ( void* mem_op, ComponentReference* cr, ComponentAuthorityKeyIdentifier *comp )
+{
+
+	if ( ( comp->keyIdentifier.identifier.bv_val && strncmp(comp->keyIdentifier.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->keyIdentifier.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->keyIdentifier;
+		else
+		return NULL;
+	}
+	if ( ( comp->authorityCertIssuer->identifier.bv_val && strncmp(comp->authorityCertIssuer->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->authorityCertIssuer->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->authorityCertIssuer;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentGeneralNames ( mem_op, cr, comp->authorityCertIssuer );
+		}
+	}
+	if ( ( comp->authorityCertSerialNumber->identifier.bv_val && strncmp(comp->authorityCertSerialNumber->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->authorityCertSerialNumber->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->authorityCertSerialNumber;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentCertificateSerialNumber ( mem_op, cr, comp->authorityCertSerialNumber );
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentAuthorityKeyIdentifier */
+
+int
+BDecComponentAuthorityKeyIdentifier PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentAuthorityKeyIdentifier **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	int old_mode = mode;
+	int rc;
+	ComponentAuthorityKeyIdentifier *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, PRIM, 0)) ||
+(tagId1 == MAKE_TAG_ID (CNTX, CONS, 0))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+                rc =    BDecComponentKeyIdentifier (mem_op, b, tagId1, elmtLen1, (&k->keyIdentifier), &totalElmtsLen1, mode);
+                if ( rc != LDAP_SUCCESS ) return rc;
+                (&k->keyIdentifier)->identifier.bv_val = (&k->keyIdentifier)->id_buf;
+                (&k->keyIdentifier)->identifier.bv_len = strlen("keyIdentifier");
+                strcpy( (&k->keyIdentifier)->identifier.bv_val, "keyIdentifier");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+                                                                                
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, CONS, 1))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+                rc =    BDecComponentGeneralNames (mem_op, b, tagId1, elmtLen1,
+(&k->authorityCertIssuer), &totalElmtsLen1, mode);
+                if ( rc != LDAP_SUCCESS ) return rc;
+                (k->authorityCertIssuer)->identifier.bv_val = (k->authorityCertIssuer)->id_buf;
+                (k->authorityCertIssuer)->identifier.bv_len = strlen("authorityCertIssuer");
+                strcpy( (k->authorityCertIssuer)->identifier.bv_val, "authorityCertIssuer");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+                                                                                
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, PRIM, 2))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+                rc =    BDecComponentCertificateSerialNumber (mem_op, b, tagId1, elmtLen1, (&k->authorityCertSerialNumber), &totalElmtsLen1, DEC_ALLOC_MODE_0 );                if ( rc != LDAP_SUCCESS ) return rc;
+                (k->authorityCertSerialNumber)->identifier.bv_val = (k->authorityCertSerialNumber)->id_buf;
+                (k->authorityCertSerialNumber)->identifier.bv_len = strlen("authorityCertSerialNumber");
+                strcpy( (k->authorityCertSerialNumber)->identifier.bv_val, "authorityCertSerialNumber");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+                                                                                
+    }
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentAuthorityKeyIdentifier*) CompAlloc( mem_op, sizeof(ComponentAuthorityKeyIdentifier) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAuthorityKeyIdentifier ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAuthorityKeyIdentifier ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentAuthorityKeyIdentifier;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAuthorityKeyIdentifier;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecAuthorityKeyIdentifier*/
+
+int
+GDecComponentAuthorityKeyIdentifier PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentAuthorityKeyIdentifier **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentAuthorityKeyIdentifier *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "keyIdentifier", strlen("keyIdentifier") ) == 0 ) {
+		rc = 	GDecComponentKeyIdentifier (mem_op, b, (&k->keyIdentifier), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->keyIdentifier)->identifier.bv_val = peek_head;
+	(&k->keyIdentifier)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "authorityCertIssuer", strlen("authorityCertIssuer") ) == 0 ) {
+		rc = 	GDecComponentGeneralNames (mem_op, b, (&k->authorityCertIssuer), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->authorityCertIssuer)->identifier.bv_val = peek_head;
+	( k->authorityCertIssuer)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "authorityCertSerialNumber", strlen("authorityCertSerialNumber") ) == 0 ) {
+		rc = 	GDecComponentCertificateSerialNumber (mem_op, b, (&k->authorityCertSerialNumber), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->authorityCertSerialNumber)->identifier.bv_val = peek_head;
+	( k->authorityCertSerialNumber)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentAuthorityKeyIdentifier*) CompAlloc( mem_op, sizeof(ComponentAuthorityKeyIdentifier) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAuthorityKeyIdentifier ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAuthorityKeyIdentifier ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentAuthorityKeyIdentifier;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAuthorityKeyIdentifier;
+	return LDAP_SUCCESS;
+}  /* GDecAuthorityKeyIdentifier*/
+
+
diff --git a/contrib/slapd-modules/comp_match/authorityKeyIdentifier.h b/contrib/slapd-modules/comp_match/authorityKeyIdentifier.h
new file mode 100644
index 0000000..5fa4ab5
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/authorityKeyIdentifier.h
@@ -0,0 +1,327 @@
+
+#include "asn-incl.h"
+/*
+ *    authorityKeyIdentifier.h
+ *    "AuthorityKeyIdentifierDefinition" ASN.1 module encode/decode/extracting/matching/free C src.
+ *    This file was generated by modified eSMACC compiler Sat Dec 11 10:15:39 2004
+ *    The generated files are strongly encouraged to be
+ *    compiled as a module for OpenLDAP Software
+ */
+
+#ifndef _authorityKeyIdentifier_h_
+#define _authorityKeyIdentifier_h_
+
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifdef _WIN32
+#pragma warning( disable : 4101 )
+#endif
+#include "componentlib.h"
+typedef ComponentOcts ComponentKeyIdentifier; /* OCTET STRING */
+
+#define MatchingComponentKeyIdentifier MatchingComponentOcts
+
+#define ExtractingComponentKeyIdentifier ExtractingComponentOcts
+
+#define BDecComponentKeyIdentifier BDecComponentOcts
+
+#define GDecComponentKeyIdentifier GDecComponentOcts
+
+
+typedef ComponentInt ComponentCertificateSerialNumber; /* INTEGER */
+
+#define MatchingComponentCertificateSerialNumber MatchingComponentInt
+
+#define ExtractingComponentCertificateSerialNumber ExtractingComponentInt
+
+#define BDecComponentCertificateSerialNumber BDecComponentInt
+
+#define GDecComponentCertificateSerialNumber GDecComponentInt
+
+
+typedef struct OtherName /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid type_id; /* OBJECT IDENTIFIER */
+	ComponentAnyDefinedBy value; /* [0] EXPLICIT ANY DEFINED BY type-id */
+} ComponentOtherName;
+
+int MatchingComponentOtherName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentOtherName PROTO (( void* mem_op, ComponentReference *cr, ComponentOtherName *comp ));
+
+
+int BDecComponentOtherName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentOtherName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentOtherName PROTO (( void* mem_op, GenBuf * b, ComponentOtherName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct ORAddress /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid type_id; /* OBJECT IDENTIFIER */
+	ComponentAnyDefinedBy value; /* ANY DEFINED BY type-id */
+	ComponentOcts extension; /* OCTET STRING OPTIONAL */
+} ComponentORAddress;
+
+int MatchingComponentORAddress PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentORAddress PROTO (( void* mem_op, ComponentReference *cr, ComponentORAddress *comp ));
+
+
+int BDecComponentORAddress PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentORAddress **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentORAddress PROTO (( void* mem_op, GenBuf * b, ComponentORAddress **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct AttributeTypeAndValue /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid type; /* OBJECT IDENTIFIER */
+	ComponentAnyDefinedBy value; /* ANY DEFINED BY type */
+} ComponentAttributeTypeAndValue;
+
+int MatchingComponentAttributeTypeAndValue PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentAttributeTypeAndValue PROTO (( void* mem_op, ComponentReference *cr, ComponentAttributeTypeAndValue *comp ));
+
+
+int BDecComponentAttributeTypeAndValue PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentAttributeTypeAndValue **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentAttributeTypeAndValue PROTO (( void* mem_op, GenBuf * b, ComponentAttributeTypeAndValue **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct DirectoryString /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum DirectoryStringChoiceId
+    {
+        DIRECTORYSTRING_TELETEXSTRING,
+        DIRECTORYSTRING_PRINTABLESTRING,
+        DIRECTORYSTRING_UNIVERSALSTRING,
+        DIRECTORYSTRING_UTF8STRING,
+        DIRECTORYSTRING_BMPSTRING
+    } choiceId;
+    union DirectoryStringChoiceUnion
+    {
+	ComponentTeletexString* teletexString; /* TeletexString SIZE 1..MAX */
+	ComponentPrintableString* printableString; /* PrintableString SIZE 1..MAX */
+	ComponentUniversalString* universalString; /* UniversalString SIZE 1..MAX */
+	ComponentUTF8String* utf8String; /* UTF8String SIZE 1..MAX */
+	ComponentBMPString* bmpString; /* BMPString SIZE 1..MAX */
+    } a;
+} ComponentDirectoryString;
+
+int MatchingComponentDirectoryString PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentDirectoryString PROTO (( void* mem_op, ComponentReference *cr, ComponentDirectoryString *comp ));
+
+
+int BDecComponentDirectoryString PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentDirectoryString **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentDirectoryString PROTO (( void* mem_op, GenBuf * b, ComponentDirectoryString **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct EDIPartyName /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentDirectoryString* nameAssigner; /* [0] DirectoryString OPTIONAL */
+	ComponentDirectoryString* partyName; /* [1] DirectoryString */
+} ComponentEDIPartyName;
+
+int MatchingComponentEDIPartyName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentEDIPartyName PROTO (( void* mem_op, ComponentReference *cr, ComponentEDIPartyName *comp ));
+
+
+int BDecComponentEDIPartyName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentEDIPartyName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentEDIPartyName PROTO (( void* mem_op, GenBuf * b, ComponentEDIPartyName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentRelativeDistinguishedName; /* SET OF AttributeTypeAndValue */
+
+int MatchingComponentRelativeDistinguishedName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentRelativeDistinguishedName PROTO (( void* mem_op, ComponentReference *cr, ComponentRelativeDistinguishedName *comp ));
+
+
+int BDecComponentRelativeDistinguishedName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentRelativeDistinguishedName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentRelativeDistinguishedName PROTO (( void* mem_op, GenBuf * b, ComponentRelativeDistinguishedName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentRDNSequence; /* SEQUENCE OF RelativeDistinguishedName */
+
+int MatchingComponentRDNSequence PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentRDNSequence PROTO (( void* mem_op, ComponentReference *cr, ComponentRDNSequence *comp ));
+
+
+int BDecComponentRDNSequence PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentRDNSequence **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentRDNSequence PROTO (( void* mem_op, GenBuf * b, ComponentRDNSequence **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Name /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum NameChoiceId
+    {
+        NAME_RDNSEQUENCE
+    } choiceId;
+    union NameChoiceUnion
+    {
+	ComponentRDNSequence* rdnSequence; /* RDNSequence */
+    } a;
+} ComponentName;
+
+int MatchingComponentName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentName PROTO (( void* mem_op, ComponentReference *cr, ComponentName *comp ));
+
+
+int BDecComponentName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentName PROTO (( void* mem_op, GenBuf * b, ComponentName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct GeneralName /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum GeneralNameChoiceId
+    {
+        GENERALNAME_OTHERNAME,
+        GENERALNAME_RFC822NAME,
+        GENERALNAME_DNSNAME,
+        GENERALNAME_X400ADDRESS,
+        GENERALNAME_DIRECTORYNAME,
+        GENERALNAME_EDIPARTYNAME,
+        GENERALNAME_UNIFORMRESOURCEIDENTIFIER,
+        GENERALNAME_IPADDRESS,
+        GENERALNAME_REGISTEREDID
+    } choiceId;
+    union GeneralNameChoiceUnion
+    {
+	ComponentOtherName* otherName; /* [0] OtherName */
+	ComponentIA5String* rfc822Name; /* [1] IA5String */
+	ComponentIA5String* dNSName; /* [2] IA5String */
+	ComponentORAddress* x400Address; /* [3] ORAddress */
+	ComponentName* directoryName; /* [4] Name */
+	ComponentEDIPartyName* ediPartyName; /* [5] EDIPartyName */
+	ComponentIA5String* uniformResourceIdentifier; /* [6] IA5String */
+	ComponentOcts* iPAddress; /* [7] OCTET STRING */
+	ComponentOid* registeredID; /* [8] OBJECT IDENTIFIER */
+    } a;
+} ComponentGeneralName;
+
+int MatchingComponentGeneralName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentGeneralName PROTO (( void* mem_op, ComponentReference *cr, ComponentGeneralName *comp ));
+
+
+int BDecComponentGeneralName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentGeneralName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentGeneralName PROTO (( void* mem_op, GenBuf * b, ComponentGeneralName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentGeneralNames; /* SEQUENCE SIZE 1..MAX OF GeneralName */
+
+int MatchingComponentGeneralNames PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentGeneralNames PROTO (( void* mem_op, ComponentReference *cr, ComponentGeneralNames *comp ));
+
+
+int BDecComponentGeneralNames PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentGeneralNames **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentGeneralNames PROTO (( void* mem_op, GenBuf * b, ComponentGeneralNames **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct AuthorityKeyIdentifier /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentKeyIdentifier keyIdentifier; /* [0] KeyIdentifier OPTIONAL */
+	ComponentGeneralNames* authorityCertIssuer; /* [1] GeneralNames OPTIONAL */
+	ComponentCertificateSerialNumber* authorityCertSerialNumber; /* [2] CertificateSerialNumber OPTIONAL */
+} ComponentAuthorityKeyIdentifier;
+
+int MatchingComponentAuthorityKeyIdentifier PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentAuthorityKeyIdentifier PROTO (( void* mem_op, ComponentReference *cr, ComponentAuthorityKeyIdentifier *comp ));
+
+
+int BDecComponentAuthorityKeyIdentifier PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentAuthorityKeyIdentifier **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentAuthorityKeyIdentifier PROTO (( void* mem_op, GenBuf * b, ComponentAuthorityKeyIdentifier **v, AsnLen *bytesDecoded, int mode));
+
+
+
+/* ========== Object Declarations ========== */
+
+
+/* ========== Object Set Declarations ========== */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#endif /* conditional include of authorityKeyIdentifier.h */
diff --git a/contrib/slapd-modules/comp_match/certificate.asn1 b/contrib/slapd-modules/comp_match/certificate.asn1
new file mode 100644
index 0000000..db81897
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/certificate.asn1
@@ -0,0 +1,175 @@
+AuthenticationFramework {joint-iso-itu-t ds(5) module(1) authenticationFramework(7) 4} DEFINITIONS ::=
+BEGIN
+-- based on RFC 3280 and X.509
+
+Certificate ::=	SEQUENCE {
+	toBeSigned TBSCertificate,
+	signatureAlgorithm AlgorithmIdentifier,
+	signature BIT STRING
+}
+
+TBSCertificate ::= SEQUENCE {
+		version [0] Version DEFAULT v1,
+		serialNumber CertificateSerialNumber,
+		signature AlgorithmIdentifier,
+		issuer Name,
+		validity Validity,
+		subject Name,
+		subjectPublicKeyInfo SubjectPublicKeyInfo,
+		issuerUniqueIdentifier [1] IMPLICIT UniqueIdentifier OPTIONAL,
+		-- if present, version shall be v2 or v3
+		subjectUniqueIdentifier [2] IMPLICIT UniqueIdentifier OPTIONAL,
+		-- if present, version shall be v2 or v3
+		extensions [3] Extensions OPTIONAL
+		-- If present, version shall be v3 -- }
+
+Version ::= INTEGER { v1(0), v2(1), v3(2) }
+
+CertificateSerialNumber ::= INTEGER
+
+AlgorithmIdentifier ::= SEQUENCE {
+	algorithm	OBJECT IDENTIFIER,
+	parameters	ANY DEFINED BY algorithm OPTIONAL -- DSA, SHA-1--
+}
+
+Name ::= CHOICE {
+	rdnSequence RDNSequence }
+
+RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
+
+RelativeDistinguishedName ::= SET OF AttributeTypeAndValue
+
+AttributeTypeAndValue ::= SEQUENCE {
+	type     AttributeType,
+	value    ANY DEFINED BY type}
+
+AttributeType ::= OBJECT IDENTIFIER
+
+Validity ::= SEQUENCE {
+	notBefore Time,
+	notAfter Time }
+
+UniqueIdentifier  ::=  BIT STRING
+
+SubjectPublicKeyInfo ::= SEQUENCE {
+	algorithm AlgorithmIdentifier,
+	subjectPublicKey BIT STRING }
+
+Time ::= CHOICE {
+	utcTime UTCTime,
+	generalizedTime GeneralizedTime }
+
+Extensions ::= SEQUENCE SIZE(1..MAX) OF Extension
+
+Extension ::= SEQUENCE {
+	extnID	OBJECT IDENTIFIER,
+	critical BOOLEAN DEFAULT FALSE,
+	extnValue OCTET STRING
+-- contains a DER encoding of a value of type &ExtnType
+-- for the extension object identified by extnId --
+}
+
+nullOid OBJECT-TYPE
+	SYNTAX	NULL
+	ACCESS read-write
+	STATUS mandatory
+	::= { 1 2 840 113549 1 1 4 }
+
+nullOid2 OBJECT-TYPE
+	SYNTAX	NULL
+	ACCESS read-write
+	STATUS mandatory
+	::= { 1 2 840 113549 1 1 1 }
+
+nullOid3 OBJECT-TYPE
+	SYNTAX	NULL
+	ACCESS read-write
+	STATUS mandatory
+	::= { 1 2 840 113549 1 1 5 }
+
+printableStringOid OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 4 3 }
+
+printableStringOid2 OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 4 6 }    
+
+printableStringOid3 OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 4 7 }
+
+printableStringOid4 OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 4 8 }    
+
+printableStringOid5 OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 4 10 }    
+
+printableStringOid6 OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 4 11 }
+
+printableStringOid7 OBJECT-TYPE
+	SYNTAX PrintableString
+	ACCESS read-write
+	STATUS mandatory
+	::= { 0 9 2342 19200300 100 1 3 }
+
+
+iA5StringOid OBJECT-TYPE
+	SYNTAX IA5String
+	ACCESS read-write
+	STATUS mandatory
+	::= { 1 2 840 113549 1 9 1 }
+
+octetStringOid OBJECT-TYPE
+	SYNTAX OCTET STRING
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 29 19 }
+
+octetStringOid2 OBJECT-TYPE
+	SYNTAX OCTET STRING
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 16 840 1 113730 1 13 }
+
+octetStringOid3 OBJECT-TYPE
+	SYNTAX OCTET STRING
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 29 14 }
+
+octetStringOid4 OBJECT-TYPE
+	SYNTAX OCTET STRING
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 29 21 }
+
+octetStringOid5 OBJECT-TYPE
+	SYNTAX OCTET STRING
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 29 20 }
+
+octetStringOid7 OBJECT-TYPE
+	SYNTAX OCTET STRING
+	ACCESS read-write
+	STATUS mandatory
+	::= { 2 5 29 28 }
+
+END
diff --git a/contrib/slapd-modules/comp_match/certificate.c b/contrib/slapd-modules/comp_match/certificate.c
new file mode 100644
index 0000000..8b58bdb
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/certificate.c
@@ -0,0 +1,3249 @@
+/*
+ *    certificate.c
+ *    "AuthenticationFramework" ASN.1 module encode/decode/extracting/matching/free C src.
+ *    This file was generated by modified eSMACC compiler Sat Dec 11 11:22:49 2004
+ *    The generated files are supposed to be compiled as a module for OpenLDAP Software
+ */
+
+#include "certificate.h"
+
+BDecComponentCertificateTop( void* mem_op, GenBuf* b, void **v, AsnLen* bytesDecoded,int mode) {
+	AsnTag tag;
+	AsnLen elmtLen;
+
+	tag = BDecTag ( b, bytesDecoded );
+	elmtLen = BDecLen ( b, bytesDecoded );
+	if ( elmtLen <= 0 ) return (-1);
+	if ( tag != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE) ) {
+		return (-1);
+	}
+		
+	return BDecComponentCertificate( mem_op, b, tag, elmtLen, (ComponentCertificate**)v,(AsnLen*)bytesDecoded, mode );
+}
+
+void init_module_AuthenticationFramework() {
+	/* Register Certificate OID and its decoder */
+	InstallOidDecoderMapping( "2.5.4.36", NULL,
+				GDecComponentCertificate,
+				BDecComponentCertificateTop,
+				ExtractingComponentCertificate,
+				MatchingComponentCertificate );
+	InitAnyAuthenticationFramework();
+}
+
+void InitAnyAuthenticationFramework()
+{
+    AsnOid oid0 ={ 9, "\52\206\110\206\367\15\1\1\4" };
+    AsnOid oid1 ={ 9, "\52\206\110\206\367\15\1\1\1" };
+    AsnOid oid2 ={ 9, "\52\206\110\206\367\15\1\1\5" };
+    AsnOid oid3 ={ 3, "\125\4\3" };
+    AsnOid oid4 ={ 3, "\125\4\6" };
+    AsnOid oid5 ={ 3, "\125\4\7" };
+    AsnOid oid6 ={ 3, "\125\4\10" };
+    AsnOid oid7 ={ 3, "\125\4\12" };
+    AsnOid oid8 ={ 3, "\125\4\13" };
+    AsnOid oid9 ={ 10, "\11\222\46\211\223\362\54\144\1\3" };
+    AsnOid oid10 ={ 9, "\52\206\110\206\367\15\1\11\1" };
+    AsnOid oid11 ={ 3, "\125\35\23" };
+    AsnOid oid12 ={ 9, "\140\206\110\1\206\370\102\1\15" };
+    AsnOid oid13 ={ 3, "\125\35\16" };
+    AsnOid oid14 ={ 3, "\125\35\25" };
+    AsnOid oid15 ={ 3, "\125\35\24" };
+    AsnOid oid17 ={ 3, "\125\35\34" };
+
+
+    InstallAnyByComponentOid (nullOid_ANY_ID, &oid0, sizeof (ComponentNull), (EncodeFcn)BEncAsnNull, (gser_decoder_func*)GDecComponentNull, (ber_tag_decoder_func*)BDecComponentNullTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentNull,(FreeFcn)FreeComponentNull, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (nullOid2_ANY_ID, &oid1, sizeof (ComponentNull), (EncodeFcn)BEncAsnNull, (gser_decoder_func*)GDecComponentNull, (ber_tag_decoder_func*)BDecComponentNullTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentNull,(FreeFcn)FreeComponentNull, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (nullOid3_ANY_ID, &oid2, sizeof (ComponentNull), (EncodeFcn)BEncAsnNull, (gser_decoder_func*)GDecComponentNull, (ber_tag_decoder_func*)BDecComponentNullTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentNull,(FreeFcn)FreeComponentNull, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid_ANY_ID, &oid3, sizeof (ComponentPrintableString), (EncodeFcn)BEncPrintableString, (gser_decoder_func*)GDecComponentPrintableString, (ber_tag_decoder_func*)BDecComponentPrintableStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentPrintableString,(FreeFcn)FreeComponentPrintableString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid2_ANY_ID, &oid4, sizeof (ComponentPrintableString), (EncodeFcn)BEncPrintableString, (gser_decoder_func*)GDecComponentPrintableString, (ber_tag_decoder_func*)BDecComponentPrintableStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentPrintableString,(FreeFcn)FreeComponentPrintableString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid3_ANY_ID, &oid5, sizeof (ComponentPrintableString), (EncodeFcn)BEncPrintableString, (gser_decoder_func*)GDecComponentPrintableString, (ber_tag_decoder_func*)BDecComponentPrintableStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentPrintableString,(FreeFcn)FreeComponentPrintableString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid4_ANY_ID, &oid6, sizeof (ComponentPrintableString), (EncodeFcn)BEncPrintableString, (gser_decoder_func*)GDecComponentPrintableString, (ber_tag_decoder_func*)BDecComponentPrintableStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentPrintableString,(FreeFcn)FreeComponentPrintableString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid5_ANY_ID, &oid7, sizeof (ComponentPrintableString), (EncodeFcn)BEncPrintableString, (gser_decoder_func*)GDecComponentPrintableString, (ber_tag_decoder_func*)BDecComponentPrintableStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentPrintableString,(FreeFcn)FreeComponentPrintableString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid6_ANY_ID, &oid8, sizeof (ComponentPrintableString), (EncodeFcn)BEncPrintableString, (gser_decoder_func*)GDecComponentPrintableString, (ber_tag_decoder_func*)BDecComponentPrintableStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentPrintableString,(FreeFcn)FreeComponentPrintableString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (printableStringOid7_ANY_ID, &oid9, sizeof (ComponentTeletexString), (EncodeFcn)BEncTeletexString, (gser_decoder_func*)GDecComponentTeletexString, (ber_tag_decoder_func*)BDecComponentTeletexStringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentTeletexString,(FreeFcn)FreeComponentTeletexString, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (iA5StringOid_ANY_ID, &oid10, sizeof (ComponentIA5String), (EncodeFcn)BEncIA5String, (gser_decoder_func*)GDecComponentIA5String, (ber_tag_decoder_func*)BDecComponentIA5StringTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentIA5String,(FreeFcn)FreeComponentIA5String, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (octetStringOid_ANY_ID, &oid11, sizeof (ComponentOcts), (EncodeFcn)BEncAsnOcts, (gser_decoder_func*)GDecComponentOcts, (ber_tag_decoder_func*)BDecComponentOctsTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentOcts,(FreeFcn)FreeComponentOcts, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (octetStringOid2_ANY_ID, &oid12, sizeof (ComponentOcts), (EncodeFcn)BEncAsnOcts, (gser_decoder_func*)GDecComponentOcts, (ber_tag_decoder_func*)BDecComponentOctsTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentOcts,(FreeFcn)FreeComponentOcts, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (octetStringOid3_ANY_ID, &oid13, sizeof (ComponentOcts), (EncodeFcn)BEncAsnOcts, (gser_decoder_func*)GDecComponentOcts, (ber_tag_decoder_func*)BDecComponentOctsTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentOcts,(FreeFcn)FreeComponentOcts, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (octetStringOid4_ANY_ID, &oid14, sizeof (ComponentOcts), (EncodeFcn)BEncAsnOcts, (gser_decoder_func*)GDecComponentOcts, (ber_tag_decoder_func*)BDecComponentOctsTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentOcts,(FreeFcn)FreeComponentOcts, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (octetStringOid5_ANY_ID, &oid15, sizeof (ComponentOcts), (EncodeFcn)BEncAsnOcts, (gser_decoder_func*)GDecComponentOcts, (ber_tag_decoder_func*)BDecComponentOctsTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentOcts,(FreeFcn)FreeComponentOcts, (PrintFcn)NULL);
+
+    InstallAnyByComponentOid (octetStringOid7_ANY_ID, &oid17, sizeof (ComponentOcts), (EncodeFcn)BEncAsnOcts, (gser_decoder_func*)GDecComponentOcts, (ber_tag_decoder_func*)BDecComponentOctsTag, (ExtractFcn)NULL,(MatchFcn)MatchingComponentOcts,(FreeFcn)FreeComponentOcts, (PrintFcn)NULL);
+
+}  /* InitAnyAuthenticationFramework */
+
+int
+MatchingComponentAlgorithmIdentifier ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentOid ( oid, (ComponentSyntaxInfo*)&((ComponentAlgorithmIdentifier*)csi_attr)->algorithm, (ComponentSyntaxInfo*)&((ComponentAlgorithmIdentifier*)csi_assert)->algorithm );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	SetAnyTypeByComponentOid ((ComponentSyntaxInfo*)&((ComponentAlgorithmIdentifier*)csi_attr)->parameters, (&((ComponentAlgorithmIdentifier*)csi_attr)->algorithm));
+	rc = MatchingComponentAnyDefinedBy ( oid, (ComponentAny*)&((ComponentAlgorithmIdentifier*)csi_attr)->parameters, (ComponentAny*)&((ComponentAlgorithmIdentifier*)csi_assert)->parameters);
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentAlgorithmIdentifier */
+
+void*
+ExtractingComponentAlgorithmIdentifier ( void* mem_op, ComponentReference* cr, ComponentAlgorithmIdentifier *comp )
+{
+
+	if ( ( comp->algorithm.identifier.bv_val && strncmp(comp->algorithm.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->algorithm.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->algorithm;
+		else
+		return NULL;
+	}
+	if ( ( comp->parameters.identifier.bv_val && strncmp(comp->parameters.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->parameters.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->parameters;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->parameters;
+	 } else {
+		return NULL;
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentAlgorithmIdentifier */
+
+int
+BDecComponentAlgorithmIdentifier PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentAlgorithmIdentifier **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentAlgorithmIdentifier *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OID_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentOid (mem_op, b, tagId1, elmtLen1, (&k->algorithm), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->algorithm)->identifier.bv_val = (&k->algorithm)->id_buf;
+		(&k->algorithm)->identifier.bv_len = strlen("algorithm");
+		strcpy( (&k->algorithm)->identifier.bv_val, "algorithm");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+         tagId1 = BufPeekByte (b);
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDecEoc (b, &totalElmtsLen1 );
+            seqDone = TRUE;
+        }
+    }
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)    {
+	rc = SetAnyTypeByComponentOid ((&k->parameters), (&k->algorithm));
+ 	rc = BDecComponentAnyDefinedBy (mem_op,b, (&k->parameters), &totalElmtsLen1, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->parameters)->identifier.bv_val = (&k->parameters)->id_buf;
+		(&k->parameters)->identifier.bv_len = strlen("parameters");
+		strcpy( (&k->parameters)->identifier.bv_val, "parameters");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentAlgorithmIdentifier*) CompAlloc( mem_op, sizeof(ComponentAlgorithmIdentifier) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAlgorithmIdentifier ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAlgorithmIdentifier ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentAlgorithmIdentifier;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAlgorithmIdentifier;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecAlgorithmIdentifier*/
+
+int
+GDecComponentAlgorithmIdentifier PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentAlgorithmIdentifier **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentAlgorithmIdentifier *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "algorithm", strlen("algorithm") ) == 0 ) {
+		rc = 	GDecComponentOid (mem_op, b, (&k->algorithm), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->algorithm)->identifier.bv_val = peek_head;
+	(&k->algorithm)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "parameters", strlen("parameters") ) == 0 ) {
+		rc = 	rc = SetAnyTypeByComponentOid ((&k->parameters), (&k->algorithm));
+	rc = GDecComponentAnyDefinedBy (mem_op, b, (&k->parameters), bytesDecoded, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->parameters)->identifier.bv_val = peek_head;
+	(&k->parameters)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentAlgorithmIdentifier*) CompAlloc( mem_op, sizeof(ComponentAlgorithmIdentifier) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAlgorithmIdentifier ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAlgorithmIdentifier ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentAlgorithmIdentifier;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAlgorithmIdentifier;
+	return LDAP_SUCCESS;
+}  /* GDecAlgorithmIdentifier*/
+
+
+int
+MatchingComponentTime ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	ComponentTime *v1, *v2;
+
+
+	v1 = (ComponentTime*)csi_attr;
+	v2 = (ComponentTime*)csi_assert;
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	if( (v1->choiceId != v2->choiceId ) )
+		return LDAP_COMPARE_FALSE;
+	switch( v1->choiceId )
+	{
+	   case TIME_UTCTIME :
+		rc = 	MatchingComponentUTCTime ( oid, (ComponentSyntaxInfo*)(v1->a.utcTime), (ComponentSyntaxInfo*)(v2->a.utcTime) );
+		break;
+	   case TIME_GENERALIZEDTIME :
+		rc = 	MatchingComponentGeneralizedTime ( oid, (ComponentSyntaxInfo*)(v1->a.generalizedTime), (ComponentSyntaxInfo*)(v2->a.generalizedTime) );
+		break;
+	default : 
+		 return LDAP_PROTOCOL_ERROR;
+	}
+	return rc;
+}  /* BMatchingComponentTimeContent */
+
+void*
+ExtractingComponentTime ( void* mem_op, ComponentReference* cr, ComponentTime *comp )
+{
+
+
+	if( (comp->choiceId) ==  TIME_UTCTIME &&
+		 (( comp->a.utcTime->identifier.bv_val && strncmp(comp->a.utcTime->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.utcTime->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.utcTime);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentUTCTime ( mem_op, cr, (comp->a.utcTime) );
+		};
+	}
+	if( (comp->choiceId) ==  TIME_GENERALIZEDTIME &&
+		 (( comp->a.generalizedTime->identifier.bv_val && strncmp(comp->a.generalizedTime->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.generalizedTime->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.generalizedTime);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentGeneralizedTime ( mem_op, cr, (comp->a.generalizedTime) );
+		};
+	}
+	return NULL;
+}  /* ExtractingComponentTime */
+
+int
+BDecComponentTime PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentTime **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentTime *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    switch (tagId0)
+    {
+       case MAKE_TAG_ID (UNIV, PRIM, UTCTIME_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, UTCTIME_TAG_CODE):
+        (k->choiceId) = TIME_UTCTIME;
+	rc = BDecComponentUTCTime (mem_op, b, tagId0, elmtLen0, (&k->a.utcTime), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.utcTime)->identifier.bv_val = (k->a.utcTime)->id_buf;
+		(k->a.utcTime)->identifier.bv_len = strlen("utcTime");
+		strcpy( (k->a.utcTime)->identifier.bv_val, "utcTime");
+    break;
+
+       case MAKE_TAG_ID (UNIV, PRIM, GENERALIZEDTIME_TAG_CODE):
+       case MAKE_TAG_ID (UNIV, CONS, GENERALIZEDTIME_TAG_CODE):
+        (k->choiceId) = TIME_GENERALIZEDTIME;
+	rc = BDecComponentGeneralizedTime (mem_op, b, tagId0, elmtLen0, (&k->a.generalizedTime), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.generalizedTime)->identifier.bv_val = (k->a.generalizedTime)->id_buf;
+		(k->a.generalizedTime)->identifier.bv_len = strlen("generalizedTime");
+		strcpy( (k->a.generalizedTime)->identifier.bv_val, "generalizedTime");
+    break;
+
+    default:
+        Asn1Error ("ERROR - unexpected tag in CHOICE\n");
+        return -1;
+        break;
+    } /* end switch */
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTime*) CompAlloc( mem_op, sizeof(ComponentTime) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTime ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTime ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTime;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTime;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecTimeContent */
+
+int
+GDecComponentTime PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentTime **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentTime *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen2 = LocateNextGSERToken(mem_op,b,&peek_head2,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head2 != ':'){
+		Asn1Error("Missing : in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( strncmp("utcTime",peek_head, strlen("utcTime")) == 0){
+		(k->choiceId) = TIME_UTCTIME;
+		rc = 	GDecComponentUTCTime (mem_op, b, (&k->a.utcTime), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.utcTime)->identifier.bv_val = peek_head;
+		(k->a.utcTime)->identifier.bv_len = strLen;
+	}
+	else if( strncmp("generalizedTime",peek_head,strlen("generalizedTime")) == 0){
+		(k->choiceId) = TIME_GENERALIZEDTIME;
+		rc = 	GDecComponentGeneralizedTime (mem_op, b, (&k->a.generalizedTime), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.generalizedTime)->identifier.bv_val = peek_head;
+		(k->a.generalizedTime)->identifier.bv_len = strLen;
+	}
+	else {
+		Asn1Error("Undefined Identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTime*) CompAlloc( mem_op, sizeof(ComponentTime) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTime ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTime ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTime;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTime;
+	return LDAP_SUCCESS;
+}  /* GDecTimeContent */
+
+
+int
+MatchingComponentExtension ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentOid ( oid, (ComponentSyntaxInfo*)&((ComponentExtension*)csi_attr)->extnID, (ComponentSyntaxInfo*)&((ComponentExtension*)csi_assert)->extnID );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentBool ( oid, (ComponentSyntaxInfo*)((ComponentExtension*)csi_attr)->critical, (ComponentSyntaxInfo*)((ComponentExtension*)csi_assert)->critical );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentOcts ( oid, (ComponentSyntaxInfo*)&((ComponentExtension*)csi_attr)->extnValue, (ComponentSyntaxInfo*)&((ComponentExtension*)csi_assert)->extnValue );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentExtension */
+
+void*
+ExtractingComponentExtension ( void* mem_op, ComponentReference* cr, ComponentExtension *comp )
+{
+
+	if ( ( comp->extnID.identifier.bv_val && strncmp(comp->extnID.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->extnID.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->extnID;
+		else
+		return NULL;
+	}
+	if ( ( comp->critical->identifier.bv_val && strncmp(comp->critical->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->critical->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->critical;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentBool ( mem_op, cr, comp->critical );
+		}
+	}
+	if ( ( comp->extnValue.identifier.bv_val && strncmp(comp->extnValue.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->extnValue.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->extnValue;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->extnValue;
+	 } else {
+		return NULL;
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentExtension */
+
+int
+BDecComponentExtension PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentExtension **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentExtension *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OID_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentOid (mem_op, b, tagId1, elmtLen1, (&k->extnID), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->extnID)->identifier.bv_val = (&k->extnID)->id_buf;
+		(&k->extnID)->identifier.bv_len = strlen("extnID");
+		strcpy( (&k->extnID)->identifier.bv_val, "extnID");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, BOOLEAN_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentBool (mem_op, b, tagId1, elmtLen1, (&k->critical), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->critical)->identifier.bv_val = (k->critical)->id_buf;
+		(k->critical)->identifier.bv_len = strlen("critical");
+		strcpy( (k->critical)->identifier.bv_val, "critical");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OCTETSTRING_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, OCTETSTRING_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentOcts (mem_op, b, tagId1, elmtLen1, (&k->extnValue), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->extnValue)->identifier.bv_val = (&k->extnValue)->id_buf;
+		(&k->extnValue)->identifier.bv_len = strlen("extnValue");
+		strcpy( (&k->extnValue)->identifier.bv_val, "extnValue");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if(!COMPONENTNOT_NULL ((k->critical)))
+	{
+(k->critical) = CompAlloc( mem_op, sizeof(ComponentBool));
+		(k->critical)->identifier.bv_val = (k->critical)->id_buf;
+		(k->critical)->identifier.bv_len = strlen("critical");
+		strcpy( (k->critical)->identifier.bv_val, "critical");
+	(k->critical)->value = 0;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentExtension*) CompAlloc( mem_op, sizeof(ComponentExtension) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentExtension ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentExtension ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentExtension;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentExtension;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecExtension*/
+
+int
+GDecComponentExtension PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentExtension **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentExtension *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "extnID", strlen("extnID") ) == 0 ) {
+		rc = 	GDecComponentOid (mem_op, b, (&k->extnID), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->extnID)->identifier.bv_val = peek_head;
+	(&k->extnID)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "critical", strlen("critical") ) == 0 ) {
+		rc = 	GDecComponentBool (mem_op, b, (&k->critical), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->critical)->identifier.bv_val = peek_head;
+	( k->critical)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	else {
+(k->critical) = CompAlloc( mem_op, sizeof(ComponentBool));
+			(k->critical)->value = 0;
+	}
+	if ( strncmp( peek_head, "extnValue", strlen("extnValue") ) == 0 ) {
+		rc = 	GDecComponentOcts (mem_op, b, (&k->extnValue), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->extnValue)->identifier.bv_val = peek_head;
+	(&k->extnValue)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentExtension*) CompAlloc( mem_op, sizeof(ComponentExtension) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentExtension ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentExtension ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentExtension;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentExtension;
+	return LDAP_SUCCESS;
+}  /* GDecExtension*/
+
+
+int
+MatchingComponentAttributeTypeAndValue ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentAttributeType ( oid, (ComponentSyntaxInfo*)&((ComponentAttributeTypeAndValue*)csi_attr)->type, (ComponentSyntaxInfo*)&((ComponentAttributeTypeAndValue*)csi_assert)->type );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	SetAnyTypeByComponentOid ((ComponentSyntaxInfo*)&((ComponentAttributeTypeAndValue*)csi_attr)->value, (&((ComponentAttributeTypeAndValue*)csi_attr)->type));
+	rc = MatchingComponentAnyDefinedBy ( oid, (ComponentAny*)&((ComponentAttributeTypeAndValue*)csi_attr)->value, (ComponentAny*)&((ComponentAttributeTypeAndValue*)csi_assert)->value);
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentAttributeTypeAndValue */
+
+void*
+ExtractingComponentAttributeTypeAndValue ( void* mem_op, ComponentReference* cr, ComponentAttributeTypeAndValue *comp )
+{
+
+	if ( ( comp->type.identifier.bv_val && strncmp(comp->type.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->type.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->type;
+		else
+		return NULL;
+	}
+	if ( ( comp->value.identifier.bv_val && strncmp(comp->value.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->value.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->value;
+		else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_SELECT ) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return &comp->value;
+	 } else {
+		return NULL;
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentAttributeTypeAndValue */
+
+int
+BDecComponentAttributeTypeAndValue PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentAttributeTypeAndValue **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentAttributeTypeAndValue *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, OID_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentAttributeType (mem_op, b, tagId1, elmtLen1, (&k->type), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->type)->identifier.bv_val = (&k->type)->id_buf;
+		(&k->type)->identifier.bv_len = strlen("type");
+		strcpy( (&k->type)->identifier.bv_val, "type");
+    }
+    else
+        return -1;
+
+
+
+    {
+	rc = SetAnyTypeByComponentOid ((&k->value), (&k->type));
+ 	rc = BDecComponentAnyDefinedBy (mem_op,b, (&k->value), &totalElmtsLen1, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->value)->identifier.bv_val = (&k->value)->id_buf;
+		(&k->value)->identifier.bv_len = strlen("value");
+		strcpy( (&k->value)->identifier.bv_val, "value");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentAttributeTypeAndValue*) CompAlloc( mem_op, sizeof(ComponentAttributeTypeAndValue) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAttributeTypeAndValue ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAttributeTypeAndValue ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentAttributeTypeAndValue;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAttributeTypeAndValue;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecAttributeTypeAndValue*/
+
+int
+GDecComponentAttributeTypeAndValue PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentAttributeTypeAndValue **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentAttributeTypeAndValue *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "type", strlen("type") ) == 0 ) {
+		rc = 	GDecComponentAttributeType (mem_op, b, (&k->type), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->type)->identifier.bv_val = peek_head;
+	(&k->type)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "value", strlen("value") ) == 0 ) {
+		rc = 	rc = SetAnyTypeByComponentOid ((&k->value), (&k->type));
+	rc = GDecComponentAnyDefinedBy (mem_op, b, (&k->value), bytesDecoded, mode );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->value)->identifier.bv_val = peek_head;
+	(&k->value)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentAttributeTypeAndValue*) CompAlloc( mem_op, sizeof(ComponentAttributeTypeAndValue) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAttributeTypeAndValue ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAttributeTypeAndValue ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentAttributeTypeAndValue;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAttributeTypeAndValue;
+	return LDAP_SUCCESS;
+}  /* GDecAttributeTypeAndValue*/
+
+
+int
+MatchingComponentValidity ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentTime ( oid, (ComponentSyntaxInfo*)((ComponentValidity*)csi_attr)->notBefore, (ComponentSyntaxInfo*)((ComponentValidity*)csi_assert)->notBefore );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentTime ( oid, (ComponentSyntaxInfo*)((ComponentValidity*)csi_attr)->notAfter, (ComponentSyntaxInfo*)((ComponentValidity*)csi_assert)->notAfter );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentValidity */
+
+void*
+ExtractingComponentValidity ( void* mem_op, ComponentReference* cr, ComponentValidity *comp )
+{
+
+	if ( ( comp->notBefore->identifier.bv_val && strncmp(comp->notBefore->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->notBefore->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->notBefore;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTime ( mem_op, cr, comp->notBefore );
+		}
+	}
+	if ( ( comp->notAfter->identifier.bv_val && strncmp(comp->notAfter->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->notAfter->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->notAfter;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTime ( mem_op, cr, comp->notAfter );
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentValidity */
+
+int
+BDecComponentValidity PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentValidity **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	int old_mode = mode;
+	int rc;
+	ComponentValidity *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, UTCTIME_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, UTCTIME_TAG_CODE)) ||
+     (tagId1 ==MAKE_TAG_ID (UNIV, PRIM, GENERALIZEDTIME_TAG_CODE))||
+    (tagId1 == MAKE_TAG_ID (UNIV, CONS, GENERALIZEDTIME_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTime (mem_op, b, tagId1, elmtLen1, (&k->notBefore), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->notBefore)->identifier.bv_val = (k->notBefore)->id_buf;
+		(k->notBefore)->identifier.bv_len = strlen("notBefore");
+		strcpy( (k->notBefore)->identifier.bv_val, "notBefore");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, UTCTIME_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, UTCTIME_TAG_CODE)) ||
+     (tagId1 ==MAKE_TAG_ID (UNIV, PRIM, GENERALIZEDTIME_TAG_CODE))||
+    (tagId1 == MAKE_TAG_ID (UNIV, CONS, GENERALIZEDTIME_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTime (mem_op, b, tagId1, elmtLen1, (&k->notAfter), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->notAfter)->identifier.bv_val = (k->notAfter)->id_buf;
+		(k->notAfter)->identifier.bv_len = strlen("notAfter");
+		strcpy( (k->notAfter)->identifier.bv_val, "notAfter");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentValidity*) CompAlloc( mem_op, sizeof(ComponentValidity) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentValidity ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentValidity ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentValidity;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentValidity;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecValidity*/
+
+int
+GDecComponentValidity PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentValidity **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentValidity *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "notBefore", strlen("notBefore") ) == 0 ) {
+		rc = 	GDecComponentTime (mem_op, b, (&k->notBefore), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->notBefore)->identifier.bv_val = peek_head;
+	( k->notBefore)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "notAfter", strlen("notAfter") ) == 0 ) {
+		rc = 	GDecComponentTime (mem_op, b, (&k->notAfter), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->notAfter)->identifier.bv_val = peek_head;
+	( k->notAfter)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentValidity*) CompAlloc( mem_op, sizeof(ComponentValidity) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentValidity ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentValidity ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentValidity;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentValidity;
+	return LDAP_SUCCESS;
+}  /* GDecValidity*/
+
+
+int
+MatchingComponentSubjectPublicKeyInfo ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentAlgorithmIdentifier ( oid, (ComponentSyntaxInfo*)((ComponentSubjectPublicKeyInfo*)csi_attr)->algorithm, (ComponentSyntaxInfo*)((ComponentSubjectPublicKeyInfo*)csi_assert)->algorithm );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentBits ( oid, (ComponentSyntaxInfo*)&((ComponentSubjectPublicKeyInfo*)csi_attr)->subjectPublicKey, (ComponentSyntaxInfo*)&((ComponentSubjectPublicKeyInfo*)csi_assert)->subjectPublicKey );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentSubjectPublicKeyInfo */
+
+void*
+ExtractingComponentSubjectPublicKeyInfo ( void* mem_op, ComponentReference* cr, ComponentSubjectPublicKeyInfo *comp )
+{
+
+	if ( ( comp->algorithm->identifier.bv_val && strncmp(comp->algorithm->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->algorithm->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->algorithm;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentAlgorithmIdentifier ( mem_op, cr, comp->algorithm );
+		}
+	}
+	if ( ( comp->subjectPublicKey.identifier.bv_val && strncmp(comp->subjectPublicKey.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->subjectPublicKey.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->subjectPublicKey;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->subjectPublicKey;
+	 } else {
+		return NULL;
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentSubjectPublicKeyInfo */
+
+int
+BDecComponentSubjectPublicKeyInfo PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentSubjectPublicKeyInfo **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentSubjectPublicKeyInfo *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentAlgorithmIdentifier (mem_op, b, tagId1, elmtLen1, (&k->algorithm), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->algorithm)->identifier.bv_val = (k->algorithm)->id_buf;
+		(k->algorithm)->identifier.bv_len = strlen("algorithm");
+		strcpy( (k->algorithm)->identifier.bv_val, "algorithm");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, BITSTRING_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, BITSTRING_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentBits (mem_op, b, tagId1, elmtLen1, (&k->subjectPublicKey), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->subjectPublicKey)->identifier.bv_val = (&k->subjectPublicKey)->id_buf;
+		(&k->subjectPublicKey)->identifier.bv_len = strlen("subjectPublicKey");
+		strcpy( (&k->subjectPublicKey)->identifier.bv_val, "subjectPublicKey");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentSubjectPublicKeyInfo*) CompAlloc( mem_op, sizeof(ComponentSubjectPublicKeyInfo) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentSubjectPublicKeyInfo ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentSubjectPublicKeyInfo ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentSubjectPublicKeyInfo;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentSubjectPublicKeyInfo;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecSubjectPublicKeyInfo*/
+
+int
+GDecComponentSubjectPublicKeyInfo PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentSubjectPublicKeyInfo **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentSubjectPublicKeyInfo *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "algorithm", strlen("algorithm") ) == 0 ) {
+		rc = 	GDecComponentAlgorithmIdentifier (mem_op, b, (&k->algorithm), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->algorithm)->identifier.bv_val = peek_head;
+	( k->algorithm)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "subjectPublicKey", strlen("subjectPublicKey") ) == 0 ) {
+		rc = 	GDecComponentBits (mem_op, b, (&k->subjectPublicKey), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->subjectPublicKey)->identifier.bv_val = peek_head;
+	(&k->subjectPublicKey)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentSubjectPublicKeyInfo*) CompAlloc( mem_op, sizeof(ComponentSubjectPublicKeyInfo) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentSubjectPublicKeyInfo ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentSubjectPublicKeyInfo ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentSubjectPublicKeyInfo;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentSubjectPublicKeyInfo;
+	return LDAP_SUCCESS;
+}  /* GDecSubjectPublicKeyInfo*/
+
+
+int
+MatchingComponentExtensions ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	void* component1, *component2;
+	AsnList *v1, *v2, t_list;
+
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	v1 = &((ComponentExtensions*)csi_attr)->comp_list;
+	v2 = &((ComponentExtensions*)csi_assert)->comp_list;
+	FOR_EACH_LIST_PAIR_ELMT(component1, component2, v1, v2)
+	{
+		if( MatchingComponentExtension(oid, (ComponentSyntaxInfo*)component1, (ComponentSyntaxInfo*)component2) == LDAP_COMPARE_FALSE) {
+			return LDAP_COMPARE_FALSE;
+		}
+	} /* end of for */
+
+	AsnListFirst( v1 );
+	AsnListFirst( v2 );
+	if( (!component1 && component2) || (component1 && !component2))
+		return LDAP_COMPARE_FALSE;
+	else
+		return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentExtensionsContent */
+
+void*
+ExtractingComponentExtensions ( void* mem_op, ComponentReference* cr, ComponentExtensions *comp )
+{
+	int count = 0;
+	int total;
+	AsnList *v = &comp->comp_list;
+	ComponentInt *k;
+	ComponentExtension *component;
+
+
+	switch ( cr->cr_curr->ci_type ) {
+	case LDAP_COMPREF_FROM_BEGINNING :
+		count = cr->cr_curr->ci_val.ci_from_beginning;
+		FOR_EACH_LIST_ELMT( component , v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL )
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentExtension ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_FROM_END :
+		total = AsnListCount ( v );
+		count = cr->cr_curr->ci_val.ci_from_end;
+		count = total + count +1;
+		FOR_EACH_LIST_ELMT ( component, v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL ) 
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentExtension ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_ALL :
+		return comp;
+	case LDAP_COMPREF_COUNT :
+		k = (ComponentInt*)CompAlloc( mem_op, sizeof(ComponentInt));
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		k->comp_desc->cd_tag = (-1);
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentInt;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentInt;
+		k->comp_desc->cd_extract_i = (extract_component_from_id_func*)NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_INTEGER;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentInt;
+		k->value = AsnListCount(v);
+		return k;
+	default :
+		return NULL;
+	}
+}  /* ExtractingComponentExtensions */
+
+int
+BDecComponentExtensions PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentExtensions **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentExtensions *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit(&k->comp_list,sizeof(ComponentExtension));
+    for (totalElmtsLen1 = 0; (totalElmtsLen1 < elmtLen0) || (elmtLen0 == INDEFINITE_LEN);)
+    {
+        ComponentExtension **tmpVar;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if ((tagId1 == EOC_TAG_ID) && (elmtLen0 == INDEFINITE_LEN))
+    {
+        BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+        break; /* got EOC so can exit this SET OF/SEQ OF's for loop*/
+    }
+    if ((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE)))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+    tmpVar = (ComponentExtension**) CompAsnListAppend (mem_op,&k->comp_list);
+	rc = BDecComponentExtension (mem_op, b, tagId1, elmtLen1, tmpVar, &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+    }  /* end of tag check if */
+    else  /* wrong tag */
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+    } /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentExtensions*) CompAlloc( mem_op, sizeof(ComponentExtensions) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentExtensions ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentExtensions ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentExtensions;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentExtensions;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecExtensionsContent */
+
+int
+GDecComponentExtensions PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentExtensions **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentExtensions *k,*t, c_temp;
+
+
+	int ElmtsLen1;
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit( &k->comp_list, sizeof( ComponentExtension ) );
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_PEEK)) ){
+		Asn1Error("Error during Reading { in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	for (ElmtsLen1 = 0; ElmtsLen1 >= INDEFINITE_LEN; ElmtsLen1++)
+	{
+		ComponentExtension **tmpVar;
+		if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_NO_COPY)) ){
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		if(*peek_head == '}') break;
+		if( !(*peek_head == '{' || *peek_head ==',') ) {
+			return LDAP_PROTOCOL_ERROR;
+		}
+		tmpVar = (ComponentExtension**) CompAsnListAppend (mem_op, &k->comp_list);
+		if ( tmpVar == NULL ) {
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		rc = 	GDecComponentExtension (mem_op, b, tmpVar, bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	} /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentExtensions*) CompAlloc( mem_op, sizeof(ComponentExtensions) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentExtensions ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentExtensions ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentExtensions;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentExtensions;
+	return LDAP_SUCCESS;
+}  /* GDecExtensionsContent */
+
+
+int
+MatchingComponentRelativeDistinguishedName ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	void* component1, *component2;
+	AsnList *v1, *v2, t_list;
+
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	v1 = &((ComponentRelativeDistinguishedName*)csi_attr)->comp_list;
+	v2 = &((ComponentRelativeDistinguishedName*)csi_assert)->comp_list;
+	AsnListInit( &t_list, 0 );
+	if( AsnListCount( v1 ) != AsnListCount( v2 ) )
+		return LDAP_COMPARE_FALSE;
+	FOR_EACH_LIST_ELMT (component1, v1)
+	{
+		FOR_EACH_LIST_ELMT(component2, v2)
+		{
+			if( MatchingComponentAttributeTypeAndValue(oid, (ComponentSyntaxInfo*)component1,(ComponentSyntaxInfo*)component2) == LDAP_COMPARE_TRUE ) {
+			AsnElmtMove( v2, &t_list );
+			   break;
+			}
+		} /* end of inner for */
+	} /* end of outer for */
+
+	if( AsnListCount( v2 ) == 0 )
+		 rc = LDAP_COMPARE_TRUE;
+	else
+		 rc = LDAP_COMPARE_FALSE;
+	AsnListMove( &t_list, v2 );
+	AsnListFirst( v1 );
+	AsnListFirst( v2 );
+	return rc;
+}  /* BMatchingComponentRelativeDistinguishedNameContent */
+
+void*
+ExtractingComponentRelativeDistinguishedName ( void* mem_op, ComponentReference* cr, ComponentRelativeDistinguishedName *comp )
+{
+	int count = 0;
+	int total;
+	AsnList *v = &comp->comp_list;
+	ComponentInt *k;
+	ComponentAttributeTypeAndValue *component;
+
+
+	switch ( cr->cr_curr->ci_type ) {
+	case LDAP_COMPREF_FROM_BEGINNING :
+		count = cr->cr_curr->ci_val.ci_from_beginning;
+		FOR_EACH_LIST_ELMT( component , v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL )
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentAttributeTypeAndValue ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_FROM_END :
+		total = AsnListCount ( v );
+		count = cr->cr_curr->ci_val.ci_from_end;
+		count = total + count +1;
+		FOR_EACH_LIST_ELMT ( component, v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL )
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentAttributeTypeAndValue ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_ALL :
+		return comp;
+	case LDAP_COMPREF_COUNT :
+		k = (ComponentInt*)CompAlloc( mem_op, sizeof(ComponentInt));
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		k->comp_desc->cd_tag = (-1);
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentInt;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentInt;
+		k->comp_desc->cd_extract_i = (extract_component_from_id_func*)NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_INTEGER;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentInt;
+		k->value = AsnListCount(v);
+		return k;
+	default :
+		return NULL;
+	}
+}  /* ExtractingComponentRelativeDistinguishedName */
+
+int
+BDecComponentRelativeDistinguishedName PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentRelativeDistinguishedName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentRelativeDistinguishedName *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit(&k->comp_list,sizeof(ComponentAttributeTypeAndValue));
+    for (totalElmtsLen1 = 0; (totalElmtsLen1 < elmtLen0) || (elmtLen0 == INDEFINITE_LEN);)
+    {
+        ComponentAttributeTypeAndValue **tmpVar;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if ((tagId1 == EOC_TAG_ID) && (elmtLen0 == INDEFINITE_LEN))
+    {
+        BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+        break; /* got EOC so can exit this SET OF/SEQ OF's for loop*/
+    }
+    if ((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE)))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+    tmpVar = (ComponentAttributeTypeAndValue**) CompAsnListAppend (mem_op,&k->comp_list);
+	rc = BDecComponentAttributeTypeAndValue (mem_op, b, tagId1, elmtLen1, tmpVar, &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+    }  /* end of tag check if */
+    else  /* wrong tag */
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+    } /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentRelativeDistinguishedName*) CompAlloc( mem_op, sizeof(ComponentRelativeDistinguishedName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)ConvertRDN2RFC2253;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentRelativeDistinguishedName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentRelativeDistinguishedName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentRelativeDistinguishedName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = RelativeDistinguishedName;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentRelativeDistinguishedName;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecRelativeDistinguishedNameContent */
+
+int
+GDecComponentRelativeDistinguishedName PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentRelativeDistinguishedName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentRelativeDistinguishedName *k,*t, c_temp;
+
+
+	int ElmtsLen1;
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit( &k->comp_list, sizeof( ComponentAttributeTypeAndValue ) );
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_PEEK)) ){
+		Asn1Error("Error during Reading { in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	for (ElmtsLen1 = 0; ElmtsLen1 >= INDEFINITE_LEN; ElmtsLen1++)
+	{
+		ComponentAttributeTypeAndValue **tmpVar;
+		if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_NO_COPY)) ){
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		if(*peek_head == '}') break;
+		if( !(*peek_head == '{' || *peek_head ==',') ) {
+			return LDAP_PROTOCOL_ERROR;
+		}
+		tmpVar = (ComponentAttributeTypeAndValue**) CompAsnListAppend (mem_op, &k->comp_list);
+		if ( tmpVar == NULL ) {
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		rc = 	GDecComponentAttributeTypeAndValue (mem_op, b, tmpVar, bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	} /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentRelativeDistinguishedName*) CompAlloc( mem_op, sizeof(ComponentRelativeDistinguishedName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentRelativeDistinguishedName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentRelativeDistinguishedName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentRelativeDistinguishedName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = RelativeDistinguishedName;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentRelativeDistinguishedName;
+	return LDAP_SUCCESS;
+}  /* GDecRelativeDistinguishedNameContent */
+
+
+int
+MatchingComponentRDNSequence ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	void* component1, *component2;
+	AsnList *v1, *v2, t_list;
+
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	v1 = &((ComponentRDNSequence*)csi_attr)->comp_list;
+	v2 = &((ComponentRDNSequence*)csi_assert)->comp_list;
+	FOR_EACH_LIST_PAIR_ELMT(component1, component2, v1, v2)
+	{
+		if( MatchingComponentRelativeDistinguishedName(oid, (ComponentSyntaxInfo*)component1, (ComponentSyntaxInfo*)component2) == LDAP_COMPARE_FALSE) {
+			return LDAP_COMPARE_FALSE;
+		}
+	} /* end of for */
+
+	AsnListFirst( v1 );
+	AsnListFirst( v2 );
+	if( (!component1 && component2) || (component1 && !component2))
+		return LDAP_COMPARE_FALSE;
+	else
+		return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentRDNSequenceContent */
+
+void*
+ExtractingComponentRDNSequence ( void* mem_op, ComponentReference* cr, ComponentRDNSequence *comp )
+{
+	int count = 0;
+	int total;
+	AsnList *v = &comp->comp_list;
+	ComponentInt *k;
+	ComponentRelativeDistinguishedName *component;
+
+
+	switch ( cr->cr_curr->ci_type ) {
+	case LDAP_COMPREF_FROM_BEGINNING :
+		count = cr->cr_curr->ci_val.ci_from_beginning;
+		FOR_EACH_LIST_ELMT( component , v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL )
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentRelativeDistinguishedName ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_FROM_END :
+		total = AsnListCount ( v );
+		count = cr->cr_curr->ci_val.ci_from_end;
+		count = total + count +1;
+		FOR_EACH_LIST_ELMT ( component, v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL ) 
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentRelativeDistinguishedName ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_ALL :
+		return comp;
+	case LDAP_COMPREF_COUNT :
+		k = (ComponentInt*)CompAlloc( mem_op, sizeof(ComponentInt));
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		k->comp_desc->cd_tag = (-1);
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentInt;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentInt;
+		k->comp_desc->cd_extract_i = (extract_component_from_id_func*)NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_INTEGER;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentInt;
+		k->value = AsnListCount(v);
+		return k;
+	default :
+		return NULL;
+	}
+}  /* ExtractingComponentRDNSequence */
+
+int
+BDecComponentRDNSequence PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentRDNSequence **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentRDNSequence *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit(&k->comp_list,sizeof(ComponentRelativeDistinguishedName));
+    for (totalElmtsLen1 = 0; (totalElmtsLen1 < elmtLen0) || (elmtLen0 == INDEFINITE_LEN);)
+    {
+        ComponentRelativeDistinguishedName **tmpVar;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if ((tagId1 == EOC_TAG_ID) && (elmtLen0 == INDEFINITE_LEN))
+    {
+        BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+        break; /* got EOC so can exit this SET OF/SEQ OF's for loop*/
+    }
+    if ((tagId1 == MAKE_TAG_ID (UNIV, CONS, SET_TAG_CODE)))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+    tmpVar = (ComponentRelativeDistinguishedName**) CompAsnListAppend (mem_op,&k->comp_list);
+	rc = BDecComponentRelativeDistinguishedName (mem_op, b, tagId1, elmtLen1, tmpVar, &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+    }  /* end of tag check if */
+    else  /* wrong tag */
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+    } /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentRDNSequence*) CompAlloc( mem_op, sizeof(ComponentRDNSequence) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ldap_encoder = (encoder_func*) ConvertRDNSequence2RFC2253;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentRDNSequence ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentRDNSequence ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentRDNSequence;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = RDNSequence;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentRDNSequence;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecRDNSequenceContent */
+
+int
+GDecComponentRDNSequence PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentRDNSequence **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentRDNSequence *k,*t, c_temp;
+
+
+	int ElmtsLen1;
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit( &k->comp_list, sizeof( ComponentRelativeDistinguishedName ) );
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_PEEK)) ){
+		Asn1Error("Error during Reading { in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	for (ElmtsLen1 = 0; ElmtsLen1 >= INDEFINITE_LEN; ElmtsLen1++)
+	{
+		ComponentRelativeDistinguishedName **tmpVar;
+		if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_NO_COPY)) ){
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		if(*peek_head == '}') break;
+		if( !(*peek_head == '{' || *peek_head ==',') ) {
+			return LDAP_PROTOCOL_ERROR;
+		}
+		tmpVar = (ComponentRelativeDistinguishedName**) CompAsnListAppend (mem_op, &k->comp_list);
+		if ( tmpVar == NULL ) {
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		rc = 	GDecComponentRelativeDistinguishedName (mem_op, b, tmpVar, bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	} /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentRDNSequence*) CompAlloc( mem_op, sizeof(ComponentRDNSequence) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)ConvertRDNSequence2RFC2253;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentRDNSequence ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentRDNSequence ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentRDNSequence;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = RDNSequence ;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentRDNSequence;
+	return LDAP_SUCCESS;
+}  /* GDecRDNSequenceContent */
+
+
+int
+MatchingComponentName ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	ComponentName *v1, *v2;
+
+
+	v1 = (ComponentName*)csi_attr;
+	v2 = (ComponentName*)csi_assert;
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	if( (v1->choiceId != v2->choiceId ) )
+		return LDAP_COMPARE_FALSE;
+	switch( v1->choiceId )
+	{
+	   case NAME_RDNSEQUENCE :
+		rc = 	MatchingComponentRDNSequence ( oid, (ComponentSyntaxInfo*)(v1->a.rdnSequence), (ComponentSyntaxInfo*)(v2->a.rdnSequence) );
+		break;
+	default : 
+		 return LDAP_PROTOCOL_ERROR;
+	}
+	return rc;
+}  /* BMatchingComponentNameContent */
+
+void*
+ExtractingComponentName ( void* mem_op, ComponentReference* cr, ComponentName *comp )
+{
+
+
+	if( (comp->choiceId) ==  NAME_RDNSEQUENCE &&
+		 (( comp->a.rdnSequence->identifier.bv_val && strncmp(comp->a.rdnSequence->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0) ||
+		 ( strncmp(comp->a.rdnSequence->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0))) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return (comp->a.rdnSequence);
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentRDNSequence ( mem_op, cr, (comp->a.rdnSequence) );
+		};
+	}
+	return NULL;
+}  /* ExtractingComponentName */
+
+int
+BDecComponentName PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentName *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    switch (tagId0)
+    {
+       case MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE):
+        (k->choiceId) = NAME_RDNSEQUENCE;
+	rc = BDecComponentRDNSequence (mem_op, b, tagId0, elmtLen0, (&k->a.rdnSequence), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.rdnSequence)->identifier.bv_val = (k->a.rdnSequence)->id_buf;
+		(k->a.rdnSequence)->identifier.bv_len = strlen("rdnSequence");
+		strcpy( (k->a.rdnSequence)->identifier.bv_val, "rdnSequence");
+    break;
+
+    default:
+        Asn1Error ("ERROR - unexpected tag in CHOICE\n");
+        return -1;
+        break;
+    } /* end switch */
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentName*) CompAlloc( mem_op, sizeof(ComponentName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentName;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecNameContent */
+
+int
+GDecComponentName PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentName **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentName *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen2 = LocateNextGSERToken(mem_op,b,&peek_head2,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head2 != ':'){
+		Asn1Error("Missing : in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( strncmp("rdnSequence",peek_head, strlen("rdnSequence")) == 0){
+		(k->choiceId) = NAME_RDNSEQUENCE;
+		rc = 	GDecComponentRDNSequence (mem_op, b, (&k->a.rdnSequence), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->a.rdnSequence)->identifier.bv_val = peek_head;
+		(k->a.rdnSequence)->identifier.bv_len = strLen;
+	}
+	else {
+		Asn1Error("Undefined Identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentName*) CompAlloc( mem_op, sizeof(ComponentName) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentName ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentName ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentName;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentName;
+	return LDAP_SUCCESS;
+}  /* GDecNameContent */
+
+
+int
+MatchingComponentTBSCertificate ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentVersion ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->version, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->version );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentCertificateSerialNumber ( oid, (ComponentSyntaxInfo*)&((ComponentTBSCertificate*)csi_attr)->serialNumber, (ComponentSyntaxInfo*)&((ComponentTBSCertificate*)csi_assert)->serialNumber );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentAlgorithmIdentifier ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->signature, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->signature );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentName ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->issuer, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->issuer );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentValidity ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->validity, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->validity );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentName ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->subject, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->subject );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentSubjectPublicKeyInfo ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->subjectPublicKeyInfo, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->subjectPublicKeyInfo );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentUniqueIdentifier ( oid, (ComponentSyntaxInfo*)&((ComponentTBSCertificate*)csi_attr)->issuerUniqueIdentifier, (ComponentSyntaxInfo*)&((ComponentTBSCertificate*)csi_assert)->issuerUniqueIdentifier );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentUniqueIdentifier ( oid, (ComponentSyntaxInfo*)&((ComponentTBSCertificate*)csi_attr)->subjectUniqueIdentifier, (ComponentSyntaxInfo*)&((ComponentTBSCertificate*)csi_assert)->subjectUniqueIdentifier );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	if(COMPONENTNOT_NULL( ((ComponentTBSCertificate*)csi_attr)->extensions ) ) {
+	rc =	MatchingComponentExtensions ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_attr)->extensions, (ComponentSyntaxInfo*)((ComponentTBSCertificate*)csi_assert)->extensions );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentTBSCertificate */
+
+void*
+ExtractingComponentTBSCertificate ( void* mem_op, ComponentReference* cr, ComponentTBSCertificate *comp )
+{
+
+	if ( ( comp->version->identifier.bv_val && strncmp(comp->version->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->version->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->version;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentVersion ( mem_op, cr, comp->version );
+		}
+	}
+	if ( ( comp->serialNumber.identifier.bv_val && strncmp(comp->serialNumber.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->serialNumber.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->serialNumber;
+		else
+		return NULL;
+	}
+	if ( ( comp->signature->identifier.bv_val && strncmp(comp->signature->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->signature->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->signature;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentAlgorithmIdentifier ( mem_op, cr, comp->signature );
+		}
+	}
+	if ( ( comp->issuer->identifier.bv_val && strncmp(comp->issuer->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->issuer->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->issuer;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentName ( mem_op, cr, comp->issuer );
+		}
+	}
+	if ( ( comp->validity->identifier.bv_val && strncmp(comp->validity->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->validity->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->validity;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentValidity ( mem_op, cr, comp->validity );
+		}
+	}
+	if ( ( comp->subject->identifier.bv_val && strncmp(comp->subject->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->subject->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->subject;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentName ( mem_op, cr, comp->subject );
+		}
+	}
+	if ( ( comp->subjectPublicKeyInfo->identifier.bv_val && strncmp(comp->subjectPublicKeyInfo->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->subjectPublicKeyInfo->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->subjectPublicKeyInfo;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentSubjectPublicKeyInfo ( mem_op, cr, comp->subjectPublicKeyInfo );
+		}
+	}
+	if ( ( comp->issuerUniqueIdentifier.identifier.bv_val && strncmp(comp->issuerUniqueIdentifier.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->issuerUniqueIdentifier.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->issuerUniqueIdentifier;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->issuerUniqueIdentifier;
+	 } else {
+		return NULL;
+		}
+	}
+	if ( ( comp->subjectUniqueIdentifier.identifier.bv_val && strncmp(comp->subjectUniqueIdentifier.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->subjectUniqueIdentifier.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->subjectUniqueIdentifier;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->subjectUniqueIdentifier;
+	 } else {
+		return NULL;
+		}
+	}
+	if ( ( comp->extensions->identifier.bv_val && strncmp(comp->extensions->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->extensions->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->extensions;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentExtensions ( mem_op, cr, comp->extensions );
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentTBSCertificate */
+
+int
+BDecComponentTBSCertificate PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentTBSCertificate **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	int old_mode = mode;
+	int rc;
+	ComponentTBSCertificate *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (CNTX, CONS, 0))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        tagId2 = BDecTag (b, &totalElmtsLen1 );
+
+    if (tagId2 != MAKE_TAG_ID (UNIV, PRIM, INTEGER_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen2 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentVersion (mem_op, b, tagId2, elmtLen2, (&k->version), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->version)->identifier.bv_val = (k->version)->id_buf;
+		(k->version)->identifier.bv_len = strlen("version");
+		strcpy( (k->version)->identifier.bv_val, "version");
+	if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, INTEGER_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentCertificateSerialNumber (mem_op, b, tagId1, elmtLen1, (&k->serialNumber), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->serialNumber)->identifier.bv_val = (&k->serialNumber)->id_buf;
+		(&k->serialNumber)->identifier.bv_len = strlen("serialNumber");
+		strcpy( (&k->serialNumber)->identifier.bv_val, "serialNumber");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentAlgorithmIdentifier (mem_op, b, tagId1, elmtLen1, (&k->signature), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->signature)->identifier.bv_val = (k->signature)->id_buf;
+		(k->signature)->identifier.bv_len = strlen("signature");
+		strcpy( (k->signature)->identifier.bv_val, "signature");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentName (mem_op, b, tagId1, elmtLen1, (&k->issuer), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->issuer)->identifier.bv_val = (k->issuer)->id_buf;
+		(k->issuer)->identifier.bv_len = strlen("issuer");
+		strcpy( (k->issuer)->identifier.bv_val, "issuer");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentValidity (mem_op, b, tagId1, elmtLen1, (&k->validity), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->validity)->identifier.bv_val = (k->validity)->id_buf;
+		(k->validity)->identifier.bv_len = strlen("validity");
+		strcpy( (k->validity)->identifier.bv_val, "validity");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentName (mem_op, b, tagId1, elmtLen1, (&k->subject), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->subject)->identifier.bv_val = (k->subject)->id_buf;
+		(k->subject)->identifier.bv_len = strlen("subject");
+		strcpy( (k->subject)->identifier.bv_val, "subject");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentSubjectPublicKeyInfo (mem_op, b, tagId1, elmtLen1, (&k->subjectPublicKeyInfo), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->subjectPublicKeyInfo)->identifier.bv_val = (k->subjectPublicKeyInfo)->id_buf;
+		(k->subjectPublicKeyInfo)->identifier.bv_len = strlen("subjectPublicKeyInfo");
+		strcpy( (k->subjectPublicKeyInfo)->identifier.bv_val, "subjectPublicKeyInfo");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+    else
+        return -1;
+
+
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, PRIM, 1)) ||
+(tagId1 == MAKE_TAG_ID (CNTX, CONS, 1))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentUniqueIdentifier (mem_op, b, tagId1, elmtLen1, (&k->issuerUniqueIdentifier), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->issuerUniqueIdentifier)->identifier.bv_val = (&k->issuerUniqueIdentifier)->id_buf;
+		(&k->issuerUniqueIdentifier)->identifier.bv_len = strlen("issuerUniqueIdentifier");
+		strcpy( (&k->issuerUniqueIdentifier)->identifier.bv_val, "issuerUniqueIdentifier");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, PRIM, 2)) ||
+(tagId1 == MAKE_TAG_ID (CNTX, CONS, 2))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentUniqueIdentifier (mem_op, b, tagId1, elmtLen1, (&k->subjectUniqueIdentifier), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->subjectUniqueIdentifier)->identifier.bv_val = (&k->subjectUniqueIdentifier)->id_buf;
+		(&k->subjectUniqueIdentifier)->identifier.bv_len = strlen("subjectUniqueIdentifier");
+		strcpy( (&k->subjectUniqueIdentifier)->identifier.bv_val, "subjectUniqueIdentifier");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, CONS, 3))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        tagId2 = BDecTag (b, &totalElmtsLen1 );
+
+    if (tagId2 != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen2 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentExtensions (mem_op, b, tagId2, elmtLen2, (&k->extensions), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->extensions)->identifier.bv_val = (k->extensions)->id_buf;
+		(k->extensions)->identifier.bv_len = strlen("extensions");
+		strcpy( (k->extensions)->identifier.bv_val, "extensions");
+	if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+
+
+    if (!seqDone)
+        return -1;
+
+	if(!COMPONENTNOT_NULL ((k->version)))
+	{
+(k->version) = CompAlloc( mem_op, sizeof(ComponentVersion));
+		(k->version)->identifier.bv_val = (k->version)->id_buf;
+		(k->version)->identifier.bv_len = strlen("version");
+		strcpy( (k->version)->identifier.bv_val, "version");
+	(k->version)->value = 0;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertificate*) CompAlloc( mem_op, sizeof(ComponentTBSCertificate) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertificate ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertificate ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertificate;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertificate;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecTBSCertificate*/
+
+int
+GDecComponentTBSCertificate PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentTBSCertificate **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentTBSCertificate *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "version", strlen("version") ) == 0 ) {
+		rc = 	GDecComponentVersion (mem_op, b, (&k->version), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->version)->identifier.bv_val = peek_head;
+	( k->version)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	else {
+(k->version) = CompAlloc( mem_op, sizeof(ComponentVersion));
+			(k->version)->value = 0;
+	}
+	if ( strncmp( peek_head, "serialNumber", strlen("serialNumber") ) == 0 ) {
+		rc = 	GDecComponentCertificateSerialNumber (mem_op, b, (&k->serialNumber), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->serialNumber)->identifier.bv_val = peek_head;
+	(&k->serialNumber)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "signature", strlen("signature") ) == 0 ) {
+		rc = 	GDecComponentAlgorithmIdentifier (mem_op, b, (&k->signature), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->signature)->identifier.bv_val = peek_head;
+	( k->signature)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "issuer", strlen("issuer") ) == 0 ) {
+		rc = 	GDecComponentName (mem_op, b, (&k->issuer), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->issuer)->identifier.bv_val = peek_head;
+	( k->issuer)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "validity", strlen("validity") ) == 0 ) {
+		rc = 	GDecComponentValidity (mem_op, b, (&k->validity), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->validity)->identifier.bv_val = peek_head;
+	( k->validity)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "subject", strlen("subject") ) == 0 ) {
+		rc = 	GDecComponentName (mem_op, b, (&k->subject), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->subject)->identifier.bv_val = peek_head;
+	( k->subject)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "subjectPublicKeyInfo", strlen("subjectPublicKeyInfo") ) == 0 ) {
+		rc = 	GDecComponentSubjectPublicKeyInfo (mem_op, b, (&k->subjectPublicKeyInfo), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->subjectPublicKeyInfo)->identifier.bv_val = peek_head;
+	( k->subjectPublicKeyInfo)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "issuerUniqueIdentifier", strlen("issuerUniqueIdentifier") ) == 0 ) {
+		rc = 	GDecComponentUniqueIdentifier (mem_op, b, (&k->issuerUniqueIdentifier), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->issuerUniqueIdentifier)->identifier.bv_val = peek_head;
+	(&k->issuerUniqueIdentifier)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "subjectUniqueIdentifier", strlen("subjectUniqueIdentifier") ) == 0 ) {
+		rc = 	GDecComponentUniqueIdentifier (mem_op, b, (&k->subjectUniqueIdentifier), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->subjectUniqueIdentifier)->identifier.bv_val = peek_head;
+	(&k->subjectUniqueIdentifier)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "extensions", strlen("extensions") ) == 0 ) {
+		rc = 	GDecComponentExtensions (mem_op, b, (&k->extensions), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->extensions)->identifier.bv_val = peek_head;
+	( k->extensions)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertificate*) CompAlloc( mem_op, sizeof(ComponentTBSCertificate) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertificate ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertificate ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertificate;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertificate;
+	return LDAP_SUCCESS;
+}  /* GDecTBSCertificate*/
+
+
+int
+MatchingComponentCertificate ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentTBSCertificate ( oid, (ComponentSyntaxInfo*)((ComponentCertificate*)csi_attr)->toBeSigned, (ComponentSyntaxInfo*)((ComponentCertificate*)csi_assert)->toBeSigned );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentAlgorithmIdentifier ( oid, (ComponentSyntaxInfo*)((ComponentCertificate*)csi_attr)->signatureAlgorithm, (ComponentSyntaxInfo*)((ComponentCertificate*)csi_assert)->signatureAlgorithm );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentBits ( oid, (ComponentSyntaxInfo*)&((ComponentCertificate*)csi_attr)->signature, (ComponentSyntaxInfo*)&((ComponentCertificate*)csi_assert)->signature );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentCertificate */
+
+void*
+ExtractingComponentCertificate ( void* mem_op, ComponentReference* cr, ComponentCertificate *comp )
+{
+
+	if ( ( comp->toBeSigned->identifier.bv_val && strncmp(comp->toBeSigned->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->toBeSigned->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->toBeSigned;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTBSCertificate ( mem_op, cr, comp->toBeSigned );
+		}
+	}
+	if ( ( comp->signatureAlgorithm->identifier.bv_val && strncmp(comp->signatureAlgorithm->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->signatureAlgorithm->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->signatureAlgorithm;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentAlgorithmIdentifier ( mem_op, cr, comp->signatureAlgorithm );
+		}
+	}
+	if ( ( comp->signature.identifier.bv_val && strncmp(comp->signature.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->signature.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->signature;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->signature;
+	 } else {
+		return NULL;
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentCertificate */
+
+int
+BDecComponentCertificate PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentCertificate **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentCertificate *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTBSCertificate (mem_op, b, tagId1, elmtLen1, (&k->toBeSigned), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->toBeSigned)->identifier.bv_val = (k->toBeSigned)->id_buf;
+		(k->toBeSigned)->identifier.bv_len = strlen("toBeSigned");
+		strcpy( (k->toBeSigned)->identifier.bv_val, "toBeSigned");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentAlgorithmIdentifier (mem_op, b, tagId1, elmtLen1, (&k->signatureAlgorithm), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->signatureAlgorithm)->identifier.bv_val = (k->signatureAlgorithm)->id_buf;
+		(k->signatureAlgorithm)->identifier.bv_len = strlen("signatureAlgorithm");
+		strcpy( (k->signatureAlgorithm)->identifier.bv_val, "signatureAlgorithm");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, BITSTRING_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, BITSTRING_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentBits (mem_op, b, tagId1, elmtLen1, (&k->signature), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->signature)->identifier.bv_val = (&k->signature)->id_buf;
+		(&k->signature)->identifier.bv_len = strlen("signature");
+		strcpy( (&k->signature)->identifier.bv_val, "signature");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentCertificate*) CompAlloc( mem_op, sizeof(ComponentCertificate) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentCertificate ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentCertificate ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentCertificate;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentCertificate;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecCertificate*/
+
+int
+GDecComponentCertificate PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentCertificate **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentCertificate *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "toBeSigned", strlen("toBeSigned") ) == 0 ) {
+		rc = 	GDecComponentTBSCertificate (mem_op, b, (&k->toBeSigned), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->toBeSigned)->identifier.bv_val = peek_head;
+	( k->toBeSigned)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "signatureAlgorithm", strlen("signatureAlgorithm") ) == 0 ) {
+		rc = 	GDecComponentAlgorithmIdentifier (mem_op, b, (&k->signatureAlgorithm), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->signatureAlgorithm)->identifier.bv_val = peek_head;
+	( k->signatureAlgorithm)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "signature", strlen("signature") ) == 0 ) {
+		rc = 	GDecComponentBits (mem_op, b, (&k->signature), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->signature)->identifier.bv_val = peek_head;
+	(&k->signature)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentCertificate*) CompAlloc( mem_op, sizeof(ComponentCertificate) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentCertificate ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentCertificate ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentCertificate;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentCertificate;
+	return LDAP_SUCCESS;
+}  /* GDecCertificate*/
+
+
diff --git a/contrib/slapd-modules/comp_match/certificate.h b/contrib/slapd-modules/comp_match/certificate.h
new file mode 100644
index 0000000..d1df75f
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/certificate.h
@@ -0,0 +1,379 @@
+
+#include "asn-incl.h"
+/*
+ *    certificate.h
+ *    "AuthenticationFramework" ASN.1 module encode/decode/extracting/matching/free C src.
+ *    This file was generated by modified eSMACC compiler Sat Dec 11 11:22:49 2004
+ *    The generated files are strongly encouraged to be
+ *    compiled as a module for OpenLDAP Software
+ */
+
+#ifndef _certificate_h_
+#define _certificate_h_
+
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifdef _WIN32
+#pragma warning( disable : 4101 )
+#endif
+#include "componentlib.h"
+typedef enum AuthenticationFrameworkAnyId
+{
+    nullOid_ANY_ID = 0,
+    nullOid2_ANY_ID = 1,
+    nullOid3_ANY_ID = 2,
+    printableStringOid_ANY_ID = 3,
+    printableStringOid2_ANY_ID = 4,
+    printableStringOid3_ANY_ID = 5,
+    printableStringOid4_ANY_ID = 6,
+    printableStringOid5_ANY_ID = 7,
+    printableStringOid6_ANY_ID = 8,
+    printableStringOid7_ANY_ID = 9,
+    iA5StringOid_ANY_ID = 10,
+    octetStringOid_ANY_ID = 11,
+    octetStringOid2_ANY_ID = 12,
+    octetStringOid3_ANY_ID = 13,
+    octetStringOid4_ANY_ID = 14,
+    octetStringOid5_ANY_ID = 15,
+    octetStringOid7_ANY_ID = 17} AuthenticationFrameworkAnyId;
+
+void InitAnyAuthenticationFramework();
+
+
+#define V1 0
+#define V2 1
+#define V3 2
+
+typedef ComponentInt ComponentVersion; /* INTEGER { V1 (0), V2 (1), V3 (2) }  */
+
+#define MatchingComponentVersion MatchingComponentInt
+
+#define ExtractingComponentVersion ExtractingComponentInt
+
+#define BDecComponentVersion BDecComponentInt
+
+#define GDecComponentVersion GDecComponentInt
+
+
+typedef ComponentInt ComponentCertificateSerialNumber; /* INTEGER */
+
+#define MatchingComponentCertificateSerialNumber MatchingComponentInt
+
+#define ExtractingComponentCertificateSerialNumber ExtractingComponentInt
+
+#define BDecComponentCertificateSerialNumber BDecComponentInt
+
+#define GDecComponentCertificateSerialNumber GDecComponentInt
+
+
+typedef ComponentOid ComponentAttributeType; /* OBJECT IDENTIFIER */
+
+#define MatchingComponentAttributeType MatchingComponentOid
+
+#define ExtractingComponentAttributeType ExtractingComponentOid
+
+#define BDecComponentAttributeType BDecComponentOid
+
+#define GDecComponentAttributeType GDecComponentOid
+
+
+typedef ComponentBits ComponentUniqueIdentifier; /* BIT STRING */
+
+#define MatchingComponentUniqueIdentifier MatchingComponentBits
+
+#define ExtractingComponentUniqueIdentifier ExtractingComponentBits
+
+#define BDecComponentUniqueIdentifier BDecComponentBits
+
+#define GDecComponentUniqueIdentifier GDecComponentBits
+
+
+typedef struct AlgorithmIdentifier /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid algorithm; /* OBJECT IDENTIFIER */
+	ComponentAnyDefinedBy parameters; /* ANY DEFINED BY algorithm OPTIONAL */
+} ComponentAlgorithmIdentifier;
+
+int MatchingComponentAlgorithmIdentifier PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentAlgorithmIdentifier PROTO (( void* mem_op, ComponentReference *cr, ComponentAlgorithmIdentifier *comp ));
+
+
+int BDecComponentAlgorithmIdentifier PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentAlgorithmIdentifier **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentAlgorithmIdentifier PROTO (( void* mem_op, GenBuf * b, ComponentAlgorithmIdentifier **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Time /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum TimeChoiceId
+    {
+        TIME_UTCTIME,
+        TIME_GENERALIZEDTIME
+    } choiceId;
+    union TimeChoiceUnion
+    {
+	ComponentUTCTime* utcTime; /* < unknown type id ?! > */
+	ComponentGeneralizedTime* generalizedTime; /* < unknown type id ?! > */
+    } a;
+} ComponentTime;
+
+int MatchingComponentTime PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentTime PROTO (( void* mem_op, ComponentReference *cr, ComponentTime *comp ));
+
+
+int BDecComponentTime PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentTime **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentTime PROTO (( void* mem_op, GenBuf * b, ComponentTime **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Extension /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid extnID; /* OBJECT IDENTIFIER */
+	ComponentBool* critical; /* BOOLEAN DEFAULT FALSE */
+	ComponentOcts extnValue; /* OCTET STRING */
+} ComponentExtension;
+
+int MatchingComponentExtension PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentExtension PROTO (( void* mem_op, ComponentReference *cr, ComponentExtension *comp ));
+
+
+int BDecComponentExtension PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentExtension **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentExtension PROTO (( void* mem_op, GenBuf * b, ComponentExtension **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct AttributeTypeAndValue /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentAttributeType type; /* AttributeType */
+	ComponentAnyDefinedBy value; /* ANY DEFINED BY type */
+} ComponentAttributeTypeAndValue;
+
+int MatchingComponentAttributeTypeAndValue PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentAttributeTypeAndValue PROTO (( void* mem_op, ComponentReference *cr, ComponentAttributeTypeAndValue *comp ));
+
+
+int BDecComponentAttributeTypeAndValue PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentAttributeTypeAndValue **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentAttributeTypeAndValue PROTO (( void* mem_op, GenBuf * b, ComponentAttributeTypeAndValue **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Validity /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentTime* notBefore; /* Time */
+	ComponentTime* notAfter; /* Time */
+} ComponentValidity;
+
+int MatchingComponentValidity PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentValidity PROTO (( void* mem_op, ComponentReference *cr, ComponentValidity *comp ));
+
+
+int BDecComponentValidity PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentValidity **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentValidity PROTO (( void* mem_op, GenBuf * b, ComponentValidity **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct SubjectPublicKeyInfo /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentAlgorithmIdentifier* algorithm; /* AlgorithmIdentifier */
+	ComponentBits subjectPublicKey; /* BIT STRING */
+} ComponentSubjectPublicKeyInfo;
+
+int MatchingComponentSubjectPublicKeyInfo PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentSubjectPublicKeyInfo PROTO (( void* mem_op, ComponentReference *cr, ComponentSubjectPublicKeyInfo *comp ));
+
+
+int BDecComponentSubjectPublicKeyInfo PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentSubjectPublicKeyInfo **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentSubjectPublicKeyInfo PROTO (( void* mem_op, GenBuf * b, ComponentSubjectPublicKeyInfo **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentExtensions; /* SEQUENCE SIZE 1..MAX OF Extension */
+
+int MatchingComponentExtensions PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentExtensions PROTO (( void* mem_op, ComponentReference *cr, ComponentExtensions *comp ));
+
+
+int BDecComponentExtensions PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentExtensions **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentExtensions PROTO (( void* mem_op, GenBuf * b, ComponentExtensions **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentRelativeDistinguishedName; /* SET OF AttributeTypeAndValue */
+
+int MatchingComponentRelativeDistinguishedName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentRelativeDistinguishedName PROTO (( void* mem_op, ComponentReference *cr, ComponentRelativeDistinguishedName *comp ));
+
+
+int BDecComponentRelativeDistinguishedName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentRelativeDistinguishedName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentRelativeDistinguishedName PROTO (( void* mem_op, GenBuf * b, ComponentRelativeDistinguishedName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentRDNSequence; /* SEQUENCE OF RelativeDistinguishedName */
+
+int MatchingComponentRDNSequence PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentRDNSequence PROTO (( void* mem_op, ComponentReference *cr, ComponentRDNSequence *comp ));
+
+
+int BDecComponentRDNSequence PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentRDNSequence **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentRDNSequence PROTO (( void* mem_op, GenBuf * b, ComponentRDNSequence **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Name /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum NameChoiceId
+    {
+        NAME_RDNSEQUENCE
+    } choiceId;
+    union NameChoiceUnion
+    {
+	ComponentRDNSequence* rdnSequence; /* RDNSequence */
+    } a;
+} ComponentName;
+
+int MatchingComponentName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentName PROTO (( void* mem_op, ComponentReference *cr, ComponentName *comp ));
+
+
+int BDecComponentName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentName PROTO (( void* mem_op, GenBuf * b, ComponentName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct TBSCertificate /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentVersion* version; /* [0] Version DEFAULT v1 */
+	ComponentCertificateSerialNumber serialNumber; /* CertificateSerialNumber */
+	ComponentAlgorithmIdentifier* signature; /* AlgorithmIdentifier */
+	ComponentName* issuer; /* Name */
+	ComponentValidity* validity; /* Validity */
+	ComponentName* subject; /* Name */
+	ComponentSubjectPublicKeyInfo* subjectPublicKeyInfo; /* SubjectPublicKeyInfo */
+	ComponentUniqueIdentifier issuerUniqueIdentifier; /* [1] IMPLICIT UniqueIdentifier OPTIONAL */
+	ComponentUniqueIdentifier subjectUniqueIdentifier; /* [2] IMPLICIT UniqueIdentifier OPTIONAL */
+	ComponentExtensions* extensions; /* [3] Extensions OPTIONAL */
+} ComponentTBSCertificate;
+
+int MatchingComponentTBSCertificate PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentTBSCertificate PROTO (( void* mem_op, ComponentReference *cr, ComponentTBSCertificate *comp ));
+
+
+int BDecComponentTBSCertificate PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentTBSCertificate **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentTBSCertificate PROTO (( void* mem_op, GenBuf * b, ComponentTBSCertificate **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Certificate /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentTBSCertificate* toBeSigned; /* TBSCertificate */
+	ComponentAlgorithmIdentifier* signatureAlgorithm; /* AlgorithmIdentifier */
+	ComponentBits signature; /* BIT STRING */
+} ComponentCertificate;
+
+int MatchingComponentCertificate PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentCertificate PROTO (( void* mem_op, ComponentReference *cr, ComponentCertificate *comp ));
+
+
+int BDecComponentCertificate PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentCertificate **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentCertificate PROTO (( void* mem_op, GenBuf * b, ComponentCertificate **v, AsnLen *bytesDecoded, int mode));
+
+
+
+/* ========== Object Declarations ========== */
+
+
+/* ========== Object Set Declarations ========== */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#endif /* conditional include of certificate.h */
diff --git a/contrib/slapd-modules/comp_match/componentlib.c b/contrib/slapd-modules/comp_match/componentlib.c
new file mode 100644
index 0000000..6f5460a
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/componentlib.c
@@ -0,0 +1,2370 @@
+/* Copyright 2004 IBM Corporation
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ */
+/* ACKNOWLEDGEMENTS
+ * This work originally developed by Sang Seok Lim
+ * 2004/06/18	03:20:00	slim@OpenLDAP.org
+ */
+
+#include "portable.h"
+#include <ac/string.h>
+#include <ac/socket.h>
+#include <ldap_pvt.h>
+#include "lutil.h"
+#include <ldap.h>
+#include "slap.h"
+#include "component.h"
+
+#include "componentlib.h"
+#include "asn.h"
+#include <asn-gser.h>
+#include <stdlib.h>
+
+#include <string.h>
+
+#ifndef SLAPD_COMP_MATCH
+#define SLAPD_COMP_MATCH SLAPD_MOD_DYNAMIC
+#endif
+
+#ifdef SLAPD_COMP_MATCH
+/*
+ * Matching function : BIT STRING
+ */
+int
+MatchingComponentBits ( char* oid, ComponentSyntaxInfo *csi_attr,
+			ComponentSyntaxInfo *csi_assert )
+{
+	int rc;
+        MatchingRule* mr;
+        ComponentBits *a, *b;
+                                                                          
+        if ( oid ) {
+                mr = retrieve_matching_rule(oid, (AsnTypeId)csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+        a = ((ComponentBits*)csi_attr);
+        b = ((ComponentBits*)csi_assert);
+	rc = ( a->value.bitLen == b->value.bitLen && 
+		strncmp( a->value.bits,b->value.bits,a->value.bitLen ) == 0 );
+        return rc ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * Free function: BIT STRING
+ */
+void
+FreeComponentBits ( ComponentBits* v ) {
+	FreeAsnBits( &v->value );
+}
+
+/*
+ * GSER Encoder : BIT STRING
+ */
+int
+GEncComponentBits ( GenBuf *b, ComponentBits *in )
+{
+	GAsnBits bits = {0};
+
+	bits.value = in->value;
+	if ( !in )
+		return (-1);
+	return GEncAsnBitsContent ( b, &bits);
+}
+
+
+/*
+ * GSER Decoder : BIT STRING
+ */
+int
+GDecComponentBits ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentBits* k, **k2;
+	GAsnBits result;
+
+        k = (ComponentBits*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentBits**) v;
+                *k2 = (ComponentBits*) CompAlloc( mem_op, sizeof( ComponentBits ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+        
+	if ( GDecAsnBitsContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree( mem_op,  k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_BITSTRING);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : BIT STRING
+ */
+int
+BDecComponentBitsTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentBits ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentBits ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentBits* k, **k2;
+	AsnBits result;
+                                                                          
+        k = (ComponentBits*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentBits**) v;
+                *k2 = (ComponentBits*) CompAlloc( mem_op, sizeof( ComponentBits ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+        
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnBits ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnBitsContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+
+	if ( rc < 0 ) {
+		if ( k ) CompFree( mem_op,  k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_BITSTRING);
+ 
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component GSER BMPString Encoder
+ */
+int
+GEncComponentBMPString ( GenBuf *b, ComponentBMPString *in )
+{
+	GBMPString t = {0};
+
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+	t.value = in->value;
+	return GEncBMPStringContent ( b, &t );
+}
+
+/*
+ * Component GSER BMPString Decoder
+ */
+int
+GDecComponentBMPString ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode)
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentBMPString* k, **k2;
+	GBMPString result;
+                                                                          
+        k = (ComponentBMPString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentBMPString**) v;
+                *k2 = (ComponentBMPString*) CompAlloc( mem_op, sizeof( ComponentBMPString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+        *bytesDecoded = 0;
+
+	if ( GDecBMPStringContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_BMP_STR);
+ 
+	return LDAP_SUCCESS;
+
+}
+
+/*
+ * Component BER BMPString Decoder
+ */
+int
+BDecComponentBMPStringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentBMPString ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentBMPString ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentBMPString* k, **k2;
+	BMPString result;
+                                                                          
+        k = (ComponentBMPString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentBMPString**) v;
+                *k2 = (ComponentBMPString*) CompAlloc( mem_op, sizeof( ComponentBMPString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecBMPString ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecBMPStringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+
+	if ( rc < 0 ) {
+		if ( k ) CompFree( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_BMP_STR);
+ 
+	return LDAP_SUCCESS;
+
+}
+
+/*
+ * Component GSER Encoder : UTF8 String
+ */
+int
+GEncComponentUTF8String ( GenBuf *b, ComponentUTF8String *in )
+{
+	GUTF8String t = {0};
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+	t.value = in->value;
+	return GEncUTF8StringContent ( b, &t );
+}
+
+/*
+ * Component GSER Decoder :  UTF8 String
+ */
+int
+GDecComponentUTF8String ( void* mem_op, GenBuf *b, void *v,
+				AsnLen *bytesDecoded, int mode) {
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentUTF8String* k, **k2;
+	GUTF8String result;
+                                                                          
+        k = (ComponentUTF8String*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentUTF8String**) v;
+                *k2 = (ComponentUTF8String*)CompAlloc( mem_op, sizeof( ComponentUTF8String ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+        *bytesDecoded = 0;
+
+	if ( GDecUTF8StringContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree( mem_op,  k );
+		return LDAP_DECODING_ERROR;
+	}
+	
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_UTF8_STR);
+ 
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : UTF8String
+ */
+int
+BDecComponentUTF8StringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentUTF8String ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentUTF8String ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len,
+				void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentUTF8String* k, **k2;
+	UTF8String result;
+                                                                          
+        k = (ComponentUTF8String*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentUTF8String**) v;
+                *k2 = (ComponentUTF8String*) CompAlloc( mem_op, sizeof( ComponentUTF8String ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecUTF8String ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecUTF8StringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree( mem_op,  k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_UTF8_STR);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component GSER Encoder :  Teletex String
+ */
+int
+GEncComponentTeletexString ( GenBuf *b, ComponentTeletexString *in )
+{
+	GTeletexString t = {0};
+
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+	t.value = in->value;
+	return GEncTeletexStringContent ( b, &t );
+}
+
+/*
+ * Component GSER Decoder :  Teletex String
+ */
+int
+GDecComponentTeletexString  ( void* mem_op, GenBuf *b, void *v,
+					AsnLen *bytesDecoded, int mode) {
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentTeletexString* k, **k2;
+	GTeletexString result;
+                                                                          
+        k = (ComponentTeletexString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentTeletexString**) v;
+                *k2 = (ComponentTeletexString*)CompAlloc( mem_op, sizeof( ComponentTeletexString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+        *bytesDecoded = 0;
+
+	if ( GDecTeletexStringContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree( mem_op,  k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_VIDEOTEX_STR);
+ 
+	return LDAP_SUCCESS;
+}
+
+
+/*
+ * Matching function : BOOLEAN
+ */
+int
+MatchingComponentBool(char* oid, ComponentSyntaxInfo* csi_attr,
+                        ComponentSyntaxInfo* csi_assert )
+{
+        MatchingRule* mr;
+        ComponentBool *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+
+        a = ((ComponentBool*)csi_attr);
+        b = ((ComponentBool*)csi_assert);
+
+        return (a->value == b->value) ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : BOOLEAN
+ */
+int
+GEncComponentBool ( GenBuf *b, ComponentBool *in )
+{
+	GAsnBool t = {0};
+
+	if ( !in )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnBoolContent ( b, &t );
+}
+
+/*
+ * GSER Decoder : BOOLEAN
+ */
+int
+GDecComponentBool ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen;
+        ComponentBool* k, **k2;
+	GAsnBool result;
+                                                                          
+        k = (ComponentBool*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentBool**) v;
+                *k2 = (ComponentBool*) CompAlloc( mem_op, sizeof( ComponentBool ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( GDecAsnBoolContent( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_BOOLEAN);
+ 
+        return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : BOOLEAN
+ */
+int
+BDecComponentBoolTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentBool ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentBool ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        ComponentBool* k, **k2;
+	AsnBool result;
+                                                                          
+        k = (ComponentBool*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentBool**) v;
+                *k2 = (ComponentBool*) CompAlloc( mem_op, sizeof( ComponentBool ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnBool ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnBoolContent( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_BOOLEAN);
+
+        return LDAP_SUCCESS;
+}
+
+/*
+ * Matching function : ENUMERATE
+ */
+int
+MatchingComponentEnum ( char* oid, ComponentSyntaxInfo *csi_attr,
+			ComponentSyntaxInfo *csi_assert )
+{
+        int rc;
+        MatchingRule* mr;
+        ComponentEnum *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+        a = ((ComponentEnum*)csi_attr);
+        b = ((ComponentEnum*)csi_assert);
+        rc = (a->value == b->value);
+                                                                          
+        return rc ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : ENUMERATE
+ */
+int
+GEncComponentEnum ( GenBuf *b, ComponentEnum *in )
+{
+	GAsnEnum t = {0};
+
+	if ( !in )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnEnumContent ( b, &t );
+}
+
+/*
+ * GSER Decoder : ENUMERATE
+ */
+int
+GDecComponentEnum ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentEnum* k, **k2;
+	GAsnEnum result;
+                                                                          
+        k = (ComponentEnum*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentEnum**) v;
+                *k2 = (ComponentEnum*) CompAlloc( mem_op, sizeof( ComponentEnum ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( GDecAsnEnumContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value_identifier.bv_val = result.value_identifier;
+	k->value_identifier.bv_len = result.len;
+
+	k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentEnum;
+	k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentEnum;
+	k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentEnum;
+	k->comp_desc->cd_free = (comp_free_func*)NULL;
+	k->comp_desc->cd_extract_i = NULL;
+	k->comp_desc->cd_type = ASN_BASIC;
+	k->comp_desc->cd_type_id = BASICTYPE_ENUMERATED;
+	k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentEnum;
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : ENUMERATE
+ */
+int
+BDecComponentEnumTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentEnum ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentEnum ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentEnum* k, **k2;
+	AsnEnum result;
+                                                                          
+        k = (ComponentEnum*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentEnum**) v;
+                *k2 = (ComponentEnum*) CompAlloc( mem_op, sizeof( ComponentEnum ) );
+		if ( k ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnEnum ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnEnumContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result;
+
+        k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k  ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentEnum;
+        k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentEnum;
+        k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentEnum;
+	k->comp_desc->cd_free = (comp_free_func*)NULL;
+        k->comp_desc->cd_extract_i = NULL;
+        k->comp_desc->cd_type = ASN_BASIC;
+        k->comp_desc->cd_type_id = BASICTYPE_ENUMERATED;
+        k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentEnum;
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component GSER Encoder : IA5String
+ */
+int
+GEncComponentIA5Stirng ( GenBuf *b, ComponentIA5String* in )
+{
+	GIA5String t = {0};
+	t.value = in->value;
+	if ( !in || in->value.octetLen <= 0 ) return (-1);
+	return GEncIA5StringContent( b, &t );
+}
+
+/*
+ * Component BER Decoder : IA5String
+ */
+int
+BDecComponentIA5StringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentIA5String ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentIA5String ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentIA5String* k, **k2;
+	IA5String result;
+                                                                          
+        k = (ComponentIA5String*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentIA5String**) v;
+                *k2 = (ComponentIA5String*) CompAlloc( mem_op, sizeof( ComponentIA5String ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecIA5String ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecIA5StringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+
+	k->value = result;
+
+        k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentIA5String;
+        k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentIA5String;
+        k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentIA5String;
+	k->comp_desc->cd_free = (comp_free_func*)FreeComponentIA5String;
+        k->comp_desc->cd_extract_i = NULL;
+        k->comp_desc->cd_type = ASN_BASIC;
+        k->comp_desc->cd_type_id = BASICTYPE_IA5_STR;
+        k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentIA5String;
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Matching function : INTEGER
+ */
+int
+MatchingComponentInt(char* oid, ComponentSyntaxInfo* csi_attr,
+                        ComponentSyntaxInfo* csi_assert )
+{
+        MatchingRule* mr;
+        ComponentInt *a, *b;
+                                                                          
+        if( oid ) {
+                /* check if this ASN type's matching rule is overridden */
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                /* if existing function is overridden, call the overriding
+function*/
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+        a = ((ComponentInt*)csi_attr);
+        b = ((ComponentInt*)csi_assert);
+                                                                          
+        return ( a->value == b->value ) ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : INTEGER
+ */
+int
+GEncComponentInt ( GenBuf *b, ComponentInt* in )
+{
+	GAsnInt t = {0};
+
+	if ( !in )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnIntContent ( b, &t );
+}
+
+/*
+ * GSER Decoder : INTEGER 
+ */
+int
+GDecComponentInt( void* mem_op, GenBuf * b, void *v, AsnLen *bytesDecoded, int mode)
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentInt* k, **k2;
+	GAsnInt result;
+                                                                          
+        k = (ComponentInt*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentInt**) v;
+                *k2 = (ComponentInt*) CompAlloc( mem_op, sizeof( ComponentInt ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( GDecAsnIntContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_INTEGER );
+
+        return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : INTEGER 
+ */
+int
+BDecComponentIntTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentInt ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentInt ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentInt* k, **k2;
+	AsnInt result;
+                                                                          
+        k = (ComponentInt*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentInt**) v;
+                *k2 = (ComponentInt*) CompAlloc( mem_op, sizeof( ComponentInt ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnInt ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnIntContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	k->value = result;
+
+	k->comp_desc = get_component_description (BASICTYPE_INTEGER );
+        
+        return LDAP_SUCCESS;
+}
+
+/*
+ * Matching function : NULL
+ */
+int
+MatchingComponentNull ( char *oid, ComponentSyntaxInfo *csi_attr,
+			ComponentSyntaxInfo *csi_assert )
+{
+        MatchingRule* mr;
+        ComponentNull *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+        a = ((ComponentNull*)csi_attr);
+        b = ((ComponentNull*)csi_assert);
+                                                                          
+        return (a->value == b->value) ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : NULL
+ */
+int
+GEncComponentNull ( GenBuf *b, ComponentNull *in )
+{
+	GAsnNull t = {0};
+
+	if ( !in )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnNullContent ( b, &t );
+}
+
+/*
+ * GSER Decoder : NULL
+ */
+int
+GDecComponentNull ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentNull* k, **k2;
+	GAsnNull result;
+                                                                          
+        k = (ComponentNull*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentNull**) v;
+                *k2 = (ComponentNull*) CompAlloc( mem_op, sizeof( ComponentNull ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( GDecAsnNullContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result.value;
+
+	k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentNull;
+	k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentNull;
+	k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentNull;
+	k->comp_desc->cd_free = (comp_free_func*)FreeComponentNull;
+	k->comp_desc->cd_extract_i = NULL;
+	k->comp_desc->cd_type = ASN_BASIC;
+	k->comp_desc->cd_type_id = BASICTYPE_NULL;
+	k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentNull;
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : NULL
+ */
+int
+BDecComponentNullTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+	return BDecComponentNull ( mem_op, b, 0, 0, v,bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentNull ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentNull* k, **k2;
+	AsnNull result;
+
+        k = (ComponentNull*) v;
+                                                                         
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentNull**) v;
+                *k2 = (ComponentNull*) CompAlloc( mem_op, sizeof( ComponentNull ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnNull ( mem_op, b, &result, bytesDecoded );
+	}
+	else {
+		rc = BDecAsnNullContent ( mem_op, b, tagId, len, &result, bytesDecoded);
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+
+	k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentNull;
+	k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentNull;
+	k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentNull;
+	k->comp_desc->cd_free = (comp_free_func*)FreeComponentNull;
+	k->comp_desc->cd_extract_i = NULL;
+	k->comp_desc->cd_type = ASN_BASIC;
+	k->comp_desc->cd_type_id = BASICTYPE_NULL;
+	k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentNull;
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : NumericString
+ */
+int
+BDecComponentNumericStringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentNumericString ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentNumericString ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentNumericString* k, **k2;
+	NumericString result;
+
+        k = (ComponentNumericString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentNumericString**) v;
+                *k2 = (ComponentNumericString*) CompAlloc( mem_op, sizeof( ComponentNumericString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecNumericString ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecNumericStringContent ( mem_op, b, tagId, len, &result, bytesDecoded);
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+
+        k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentNumericString;
+        k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentNumericString;
+        k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentNumericString;
+	k->comp_desc->cd_free = (comp_free_func*)FreeComponentNumericString;
+        k->comp_desc->cd_extract_i = NULL;
+        k->comp_desc->cd_type = ASN_BASIC;
+        k->comp_desc->cd_type_id = BASICTYPE_NUMERIC_STR;
+        k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentNumericString;
+
+	return LDAP_SUCCESS;
+}
+
+
+/*
+ * Free function : OCTET STRING
+ */
+void
+FreeComponentOcts ( ComponentOcts* v) {
+	FreeAsnOcts( &v->value );
+}
+
+/*
+ * Matching function : OCTET STRING
+ */
+int
+MatchingComponentOcts ( char* oid, ComponentSyntaxInfo* csi_attr,
+			ComponentSyntaxInfo* csi_assert )
+{
+        int rc;
+        MatchingRule* mr;
+        ComponentOcts *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+        a = (ComponentOcts*) csi_attr;
+        b = (ComponentOcts*) csi_assert;
+	/* Assume that both of OCTET string has end of string character */
+	if ( (a->value.octetLen == b->value.octetLen) &&
+		strncmp ( a->value.octs, b->value.octs, a->value.octetLen ) == 0 )
+        	return LDAP_COMPARE_TRUE;
+	else
+		return LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : OCTET STRING
+ */
+int
+GEncComponentOcts ( GenBuf* b, ComponentOcts *in )
+{
+	GAsnOcts t = {0};
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+
+	t.value = in->value;
+	return GEncAsnOctsContent ( b, &t );
+}
+
+/*
+ * GSER Decoder : OCTET STRING
+ */
+int
+GDecComponentOcts ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char *peek_head, *data;
+        int i, j, strLen;
+        void* component_values;
+        ComponentOcts* k, **k2;
+	GAsnOcts result;
+                                                                          
+        k = (ComponentOcts*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentOcts**) v;
+                *k2 = (ComponentOcts*) CompAlloc( mem_op, sizeof( ComponentOcts ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( GDecAsnOctsContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result.value;
+
+	k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentOcts;
+	k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentOcts;
+	k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentOcts;
+	k->comp_desc->cd_free = (comp_free_func*)FreeComponentOcts;
+	k->comp_desc->cd_extract_i = NULL;
+	k->comp_desc->cd_type = ASN_BASIC;
+	k->comp_desc->cd_type_id = BASICTYPE_OCTETSTRING;
+	k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentOcts;
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : OCTET STRING
+ */
+int
+BDecComponentOctsTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentOcts ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentOcts ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char *peek_head, *data;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentOcts* k, **k2;
+	AsnOcts result;
+                                                                          
+        k = (ComponentOcts*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentOcts**) v;
+                *k2 = (ComponentOcts*) CompAlloc( mem_op, sizeof( ComponentOcts ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnOcts ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnOctsContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+
+        k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !k->comp_desc )  {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentOcts;
+        k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentOcts;
+        k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentOcts;
+	k->comp_desc->cd_free = (comp_free_func*)FreeComponentOcts;
+        k->comp_desc->cd_extract_i = NULL;
+        k->comp_desc->cd_type = ASN_BASIC;
+        k->comp_desc->cd_type_id = BASICTYPE_OCTETSTRING;
+        k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentOcts;
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Matching function : OBJECT IDENTIFIER
+ */
+int
+MatchingComponentOid ( char *oid, ComponentSyntaxInfo *csi_attr ,
+			ComponentSyntaxInfo *csi_assert )
+{
+        int rc;
+        MatchingRule* mr;
+        ComponentOid *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+
+        a = (ComponentOid*)csi_attr;
+        b = (ComponentOid*)csi_assert;
+	if ( a->value.octetLen != b->value.octetLen )
+		return LDAP_COMPARE_FALSE;
+        rc = ( strncmp( a->value.octs, b->value.octs, a->value.octetLen ) == 0 );
+                                                                          
+        return rc ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : OID
+ */
+GEncComponentOid ( GenBuf *b, ComponentOid *in )
+{
+	GAsnOid t = {0};
+
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnOidContent( b, (GAsnOcts*)&t );
+}
+
+/*
+ * GSER Decoder : OID
+ */
+int
+GDecAsnDescOidContent ( void* mem_op, GenBuf *b, GAsnOid *result, AsnLen *bytesDecoded ){
+	AttributeType *ad_type;
+	struct berval name;
+	char* peek_head;
+	int strLen;
+
+	strLen = LocateNextGSERToken ( mem_op, b, &peek_head, GSER_NO_COPY );
+	name.bv_val = peek_head;
+	name.bv_len = strLen;
+
+	ad_type = at_bvfind( &name );
+
+	if ( !ad_type )
+		return LDAP_DECODING_ERROR;
+
+	peek_head = ad_type->sat_atype.at_oid;
+	strLen = strlen ( peek_head );
+
+	result->value.octs = (char*)EncodeComponentOid ( mem_op, peek_head , &strLen );
+	result->value.octetLen = strLen;
+	return LDAP_SUCCESS;
+}
+
+int
+IsNumericOid ( char* peek_head , int strLen ) {
+	int i;
+	int num_dot;
+	for ( i = 0, num_dot = 0 ; i < strLen ; i++ ) {
+		if ( peek_head[i] == '.' ) num_dot++;
+		else if ( peek_head[i] > '9' || peek_head[i] < '0' )
+			return (-1);
+	}
+	if ( num_dot )
+		return (1);
+	else
+		return (-1);
+}
+
+int
+GDecComponentOid ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentOid* k, **k2;
+	GAsnOid result;
+                                                                          
+        k = (ComponentOid*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentOid**) v;
+                *k2 = (ComponentOid*) CompAlloc( mem_op, sizeof( ComponentOid ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	strLen = LocateNextGSERToken ( mem_op, b, &peek_head, GSER_PEEK );
+	if ( IsNumericOid ( peek_head , strLen ) >= 1 ) {
+		/* numeric-oid */
+		if ( GDecAsnOidContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+			if ( k ) CompFree ( mem_op, k );
+			return LDAP_DECODING_ERROR;
+		}
+	}
+	else {
+		/*descr*/
+		if ( GDecAsnDescOidContent ( mem_op, b, &result, bytesDecoded ) < 0 ){
+			if ( k ) CompFree ( mem_op, k );
+			return LDAP_DECODING_ERROR;
+		}
+	}
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_OID);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : OID
+ */
+int
+BDecComponentOidTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentOid ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentOid ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v,
+			AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentOid* k, **k2;
+	AsnOid result;
+                                                                          
+        k = (ComponentOid*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentOid**) v;
+                *k2 = (ComponentOid*) CompAlloc( mem_op, sizeof( ComponentOid ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnOid ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnOidContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+
+	k->comp_desc = get_component_description (BASICTYPE_OID);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : PrintableString
+ */
+
+int
+BDecComponentPrintableStringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+	return BDecComponentPrintableString ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentPrintableString( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentPrintableString* k, **k2;
+	AsnOid result;
+                                                                          
+        k = (ComponentPrintableString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentPrintableString**) v;
+                *k2 = (ComponentPrintableString*) CompAlloc( mem_op, sizeof( ComponentPrintableString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ) {
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecPrintableString ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecPrintableStringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+
+	k->comp_desc = get_component_description (BASICTYPE_PRINTABLE_STR);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : TeletexString
+ */
+
+int
+BDecComponentTeletexStringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+	return BDecComponentTeletexString ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentTeletexString( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentTeletexString* k, **k2;
+	AsnOid result;
+                                                                          
+        k = (ComponentTeletexString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentTeletexString**) v;
+                *k2 = (ComponentTeletexString*) CompAlloc( mem_op, sizeof( ComponentTeletexString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ) {
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecTeletexString ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecTeletexStringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+
+	k->comp_desc = get_component_description (BASICTYPE_T61_STR);
+
+	return LDAP_SUCCESS;
+}
+
+
+/*
+ * Matching function : Real
+ */
+int
+MatchingComponentReal (char* oid, ComponentSyntaxInfo *csi_attr,
+			ComponentSyntaxInfo *csi_assert )
+{
+        int rc;
+        MatchingRule* mr;
+        ComponentReal *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+        a = (ComponentReal*)csi_attr;
+        b = (ComponentReal*)csi_assert;
+        rc = (a->value == b->value);
+                                                                          
+        return rc ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : Real
+ */
+int
+GEncComponentReal ( GenBuf *b, ComponentReal *in )
+{
+	GAsnReal t = {0};
+	if ( !in )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnRealContent ( b, &t );
+}
+
+/*
+ * GSER Decoder : Real
+ */
+int
+GDecComponentReal ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentReal* k, **k2;
+	GAsnReal result;
+                                                                          
+        k = (ComponentReal*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentReal**) v;
+                *k2 = (ComponentReal*) CompAlloc( mem_op, sizeof( ComponentReal ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( GDecAsnRealContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_REAL);
+
+        return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : Real
+ */
+int
+BDecComponentRealTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentReal ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentReal ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentReal* k, **k2;
+	AsnReal result;
+                                                                          
+        k = (ComponentReal*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentReal**) v;
+                *k2 = (ComponentReal*) CompAlloc( mem_op, sizeof( ComponentReal ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnReal ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnRealContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_REAL);
+
+        return LDAP_SUCCESS;
+}
+
+/*
+ * Matching function : Relative OID
+ */
+int
+MatchingComponentRelativeOid ( char* oid, ComponentSyntaxInfo *csi_attr,
+					ComponentSyntaxInfo *csi_assert )
+{
+        int rc;
+        MatchingRule* mr;
+        ComponentRelativeOid *a, *b;
+                                                                          
+        if( oid ) {
+                mr = retrieve_matching_rule(oid, csi_attr->csi_comp_desc->cd_type_id );
+                if ( mr )
+                        return component_value_match( mr, csi_attr , csi_assert );
+        }
+
+        a = (ComponentRelativeOid*)csi_attr;
+        b = (ComponentRelativeOid*)csi_assert;
+
+	if ( a->value.octetLen != b->value.octetLen )
+		return LDAP_COMPARE_FALSE;
+        rc = ( strncmp( a->value.octs, b->value.octs, a->value.octetLen ) == 0 );
+                                                                          
+        return rc ? LDAP_COMPARE_TRUE:LDAP_COMPARE_FALSE;
+}
+
+/*
+ * GSER Encoder : RELATIVE_OID.
+ */
+int
+GEncComponentRelativeOid ( GenBuf *b, ComponentRelativeOid *in )
+{
+	GAsnRelativeOid t = {0};
+
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+	t.value = in->value;
+	return GEncAsnRelativeOidContent ( b , (GAsnOcts*)&t );
+}
+
+/*
+ * GSER Decoder : RELATIVE_OID.
+ */
+int
+GDecComponentRelativeOid ( void* mem_op, GenBuf *b,void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen;
+        void* component_values;
+        ComponentRelativeOid* k, **k2;
+	GAsnRelativeOid result;
+                                                                          
+        k = (ComponentRelativeOid*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentRelativeOid**) v;
+                *k2 = (ComponentRelativeOid*) CompAlloc( mem_op, sizeof( ComponentRelativeOid ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ( GDecAsnRelativeOidContent ( mem_op, b, &result, bytesDecoded ) < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result.value;
+	k->comp_desc = get_component_description (BASICTYPE_OID);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : RELATIVE_OID.
+ */
+int
+BDecComponentRelativeOidTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentRelativeOid ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentRelativeOid ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentRelativeOid* k, **k2;
+	AsnRelativeOid result;
+                                                                          
+        k = (ComponentRelativeOid*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentRelativeOid**) v;
+                *k2 = (ComponentRelativeOid*) CompAlloc( mem_op, sizeof( ComponentRelativeOid ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecAsnRelativeOid ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecAsnRelativeOidContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_OID);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * GSER Encoder : UniversalString
+ */
+int
+GEncComponentUniversalString ( GenBuf *b, ComponentUniversalString *in )
+{
+	GUniversalString t = {0};
+	if ( !in || in->value.octetLen <= 0 )
+		return (-1);
+	t.value = in->value;
+	return GEncUniversalStringContent( b, &t );
+}
+
+/*
+ * GSER Decoder : UniversalString
+ */
+static int
+UTF8toUniversalString( char* octs, int len){
+	/* Need to be Implemented */
+	return LDAP_SUCCESS;
+}
+
+int
+GDecComponentUniversalString ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode )
+{
+	if ( GDecComponentUTF8String ( mem_op, b, v, bytesDecoded, mode) < 0 )
+	UTF8toUniversalString( ((ComponentUniversalString*)v)->value.octs, ((ComponentUniversalString*)v)->value.octetLen );
+		return LDAP_DECODING_ERROR;
+}
+
+/*
+ * Component BER Decoder : UniverseString
+ */
+int
+BDecComponentUniversalStringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentUniversalString ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentUniversalString ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentUniversalString* k, **k2;
+	UniversalString result;
+
+        k = (ComponentUniversalString*) v;
+
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentUniversalString**) v;
+                *k2 = (ComponentUniversalString*) CompAlloc( mem_op, sizeof( ComponentUniversalString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecUniversalString ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecUniversalStringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	if ( rc < 0 ) {
+		if ( k ) CompFree ( mem_op, k );
+		return LDAP_DECODING_ERROR;
+	}
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_UNIVERSAL_STR);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Component BER Decoder : VisibleString
+ */
+int
+BDecComponentVisibleStringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode ) {
+	return BDecComponentVisibleString ( mem_op, b, 0, 0, v, bytesDecoded, mode|CALL_TAG_DECODER );
+}
+
+int
+BDecComponentVisibleString ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode )
+{
+        char* peek_head;
+        int i, strLen, rc;
+        void* component_values;
+        ComponentVisibleString* k, **k2;
+	VisibleString result;
+                                                                          
+        k = (ComponentVisibleString*) v;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentVisibleString**) v;
+                *k2 = (ComponentVisibleString*) CompAlloc( mem_op, sizeof( ComponentVisibleString ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ( mode & CALL_TAG_DECODER ){
+		mode = mode & CALL_CONTENT_DECODER;
+		rc = BDecVisibleString ( mem_op, b, &result, bytesDecoded );
+	} else {
+		rc = BDecVisibleStringContent ( mem_op, b, tagId, len, &result, bytesDecoded );
+	}
+	k->value = result;
+	k->comp_desc = get_component_description (BASICTYPE_VISIBLE_STR);
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * Routines for handling an ANY DEFINED Type
+ */
+
+/* Check if the <select> type CR and the OID of the given ANY type */
+int
+CheckSelectTypeCorrect ( void* mem_op, ComponentAnyInfo* cai, struct berval* select ) {
+	int strLen;
+	AttributeType* ad_type;
+	char* oid;
+	char* result;
+
+	if ( IsNumericOid ( select->bv_val , select->bv_len ) ) {
+		oid = select->bv_val;
+		strLen = select->bv_len;
+	} else {
+		ad_type = at_bvfind( select );
+
+		if ( !ad_type )
+			return LDAP_DECODING_ERROR;
+
+		oid = ad_type->sat_atype.at_oid;
+		strLen = strlen ( oid );
+	}
+	result = EncodeComponentOid ( mem_op, oid , &strLen );
+	if ( !result || strLen <= 0 ) return (-1);
+
+	if ( cai->oid.octetLen == strLen &&
+		strncmp ( cai->oid.octs, result, strLen ) == 0 )
+		return (1);
+	else
+		return (-1);
+}
+
+int
+SetAnyTypeByComponentOid ( ComponentAny *v, ComponentOid *id ) {
+	Hash hash;
+	void *anyInfo;
+
+	/* use encoded oid as hash string */
+	hash = MakeHash (id->value.octs, id->value.octetLen);
+	if (CheckForAndReturnValue (anyOidHashTblG, hash, &anyInfo))
+		v->cai = (ComponentAnyInfo*) anyInfo;
+	else
+		v->cai = NULL;
+
+	if ( !v->cai ) {
+	/*
+	 * If not found, the data considered as octet chunk
+	 * Yet-to-be-Implemented
+	 */
+	}
+	return LDAP_SUCCESS;
+}
+
+void
+SetAnyTypeByComponentInt( ComponentAny *v, ComponentInt id) {
+	Hash hash;
+	void *anyInfo;
+
+	hash = MakeHash ((char*)&id, sizeof (id));
+	if (CheckForAndReturnValue (anyIntHashTblG, hash, &anyInfo))
+		v->cai = (ComponentAnyInfo*) anyInfo;
+	else
+		v->cai = NULL;
+}
+
+int
+GEncComponentAny ( GenBuf *b, ComponentAny *in )
+{
+	if ( in->cai != NULL  && in->cai->Encode != NULL )
+		return in->cai->Encode(b, &in->value );
+	else
+		return (-1);
+}
+
+int
+BEncComponentAny ( void* mem_op, GenBuf *b, ComponentAny *result, AsnLen *bytesDecoded, int mode)
+{
+        ComponentAny *k, **k2;
+                                                                          
+        k = (ComponentAny*) result;
+
+	if ( !k ) return (-1);
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentAny**) result;
+                *k2 = (ComponentAny*) CompAlloc( mem_op, sizeof( ComponentAny ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ((result->cai != NULL) && (result->cai->BER_Decode != NULL)) {
+		result->value = (void*) CompAlloc ( mem_op, result->cai->size );
+		if ( !result->value ) return 0;
+		result->cai->BER_Decode ( mem_op, b, result->value, (int*)bytesDecoded, DEC_ALLOC_MODE_1);
+
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		if ( !k->comp_desc )  {
+			if ( k ) CompFree ( mem_op, k );
+			return LDAP_DECODING_ERROR;
+		}
+		k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentAny;
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAny;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAny;
+		k->comp_desc->cd_free = (comp_free_func*)FreeComponentAny;
+		k->comp_desc->cd_extract_i = NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_ANY;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAny;
+		return LDAP_SUCCESS;
+	}
+	else {
+		Asn1Error ("ERROR - Component ANY Decode routine is NULL\n");
+		return 0;
+	}
+}
+
+int
+BDecComponentAny ( void* mem_op, GenBuf *b, ComponentAny *result, AsnLen *bytesDecoded, int mode) {
+	int rc;
+        ComponentAny *k, **k2;
+                                                                          
+        k = (ComponentAny*) result;
+
+	if ( !k ) return (-1);
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentAny**) result;
+                *k2 = (ComponentAny*) CompAlloc( mem_op, sizeof( ComponentAny ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	
+	if ((result->cai != NULL) && (result->cai->BER_Decode != NULL)) {
+		result->cai->BER_Decode ( mem_op, b, (ComponentSyntaxInfo*)&result->value, (int*)bytesDecoded, DEC_ALLOC_MODE_0 );
+
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		if ( !k->comp_desc )  {
+			if ( k ) CompFree ( mem_op, k );
+			return LDAP_DECODING_ERROR;
+		}
+		k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentAny;
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAny;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAny;
+		k->comp_desc->cd_free = (comp_free_func*)FreeComponentAny;
+		k->comp_desc->cd_extract_i = NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_ANY;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAny;
+		return LDAP_SUCCESS;
+	}
+	else {
+		Asn1Error ("ERROR - Component ANY Decode routine is NULL\n");
+		return 0;
+	}
+}
+
+int
+GDecComponentAny ( void* mem_op, GenBuf *b, ComponentAny *result, AsnLen *bytesDecoded, int mode) {
+        ComponentAny *k, **k2;
+                                                                          
+        k = (ComponentAny*) result;
+                                                                          
+        if ( mode & DEC_ALLOC_MODE_0 ) {
+                k2 = (ComponentAny**) result;
+                *k2 = (ComponentAny*) CompAlloc( mem_op, sizeof( ComponentAny ) );
+		if ( !*k2 ) return LDAP_DECODING_ERROR;
+                k = *k2;
+        }
+	if ((result->cai != NULL) && (result->cai->GSER_Decode != NULL)) {
+		result->value = (void*) CompAlloc ( mem_op, result->cai->size );
+		if ( !result->value ) return 0;
+		result->cai->GSER_Decode ( mem_op, b, result->value, (int*)bytesDecoded, DEC_ALLOC_MODE_1);
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		if ( !k->comp_desc )  {
+			if ( k ) CompFree ( mem_op, k );
+			return LDAP_DECODING_ERROR;
+		}
+		k->comp_desc->cd_gser_encoder = (encoder_func*)GEncComponentAny;
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentAny;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentAny;
+		k->comp_desc->cd_free = (comp_free_func*)FreeComponentAny;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_extract_i = NULL;
+		k->comp_desc->cd_type_id = BASICTYPE_ANY;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentAny;
+		return LDAP_SUCCESS;
+	}
+	else {
+		Asn1Error ("ERROR - ANY Decode routine is NULL\n");
+		return 0;
+	}
+}
+
+int
+MatchingComponentAny (char* oid, ComponentAny *result, ComponentAny *result2) {
+	void *comp1, *comp2;
+
+	if ( result->comp_desc->cd_type_id == BASICTYPE_ANY )
+		comp1 = result->value;
+	else
+		comp1 = result;
+
+	if ( result2->comp_desc->cd_type_id == BASICTYPE_ANY )
+		comp2 = result2->value;
+	else
+		comp2 = result2;
+		
+	if ((result->cai != NULL) && (result->cai->Match != NULL)) {
+		if ( result->comp_desc->cd_type_id == BASICTYPE_ANY )
+			return result->cai->Match(oid, comp1, comp2 );
+		else if ( result2->comp_desc->cd_type_id == BASICTYPE_ANY )
+			return result2->cai->Match(oid, comp1, comp2);
+		else 
+			return LDAP_INVALID_SYNTAX;
+	}
+	else {
+		Asn1Error ("ERROR - ANY Matching routine is NULL\n");
+		return LDAP_INVALID_SYNTAX;
+	}
+}
+
+void*
+ExtractingComponentAny ( void* mem_op, ComponentReference* cr,  ComponentAny *result ) {
+	if ((result->cai != NULL) && (result->cai->Extract != NULL)) {
+		return (void*) result->cai->Extract( mem_op, cr , result->value );
+	}
+	else {
+		Asn1Error ("ERROR - ANY Extracting routine is NULL\n");
+		return (void*)NULL;
+	}
+}
+
+void
+FreeComponentAny (ComponentAny* any) {
+	if ( any->cai != NULL && any->cai->Free != NULL ) {
+		any->cai->Free( any->value );
+		free ( ((ComponentSyntaxInfo*)any->value)->csi_comp_desc );
+		free ( any->value );
+	}
+	else
+		Asn1Error ("ERROR - ANY Free routine is NULL\n");
+}
+
+void
+InstallAnyByComponentInt (int anyId, ComponentInt intId, unsigned int size,
+			EncodeFcn encode, gser_decoder_func* G_decode,
+			ber_tag_decoder_func* B_decode, ExtractFcn extract,
+			MatchFcn match, FreeFcn free,
+			PrintFcn print)
+{
+	ComponentAnyInfo *a;
+	Hash h;
+
+	a = (ComponentAnyInfo*) malloc(sizeof (ComponentAnyInfo));
+	a->anyId = anyId;
+	a->oid.octs = NULL;
+	a->oid.octetLen = 0;
+	a->intId = intId;
+	a->size = size;
+	a->Encode = encode;
+	a->GSER_Decode = G_decode;
+	a->BER_Decode = B_decode;
+	a->Match = match;
+	a->Extract = extract;
+	a->Free = free;
+	a->Print = print;
+
+	if (anyIntHashTblG == NULL)
+		anyIntHashTblG = InitHash();
+
+	h = MakeHash ((char*)&intId, sizeof (intId));
+
+	if(anyIntHashTblG != NULL)
+		Insert(anyIntHashTblG, a, h);
+}
+
+
+/*
+ * OID and its corresponding decoder can be registered with this func.
+ * If contained types constrained by <select> are used,
+ * their OID and decoder MUST be registered, otherwise it will return no entry.
+ * An open type(ANY type) also need be registered.
+ */
+void
+InstallOidDecoderMapping ( char* ch_oid, EncodeFcn encode, gser_decoder_func* G_decode, ber_tag_decoder_func* B_decode, ExtractFcn extract, MatchFcn match ) {
+	AsnOid oid;
+	int strLen;
+	void* mem_op;
+
+	strLen = strlen( ch_oid );
+	if( strLen <= 0 ) return;
+	mem_op = comp_nibble_memory_allocator ( 128, 16 );
+	oid.octs = EncodeComponentOid ( mem_op, ch_oid, &strLen );
+	oid.octetLen = strLen;
+	if( strLen <= 0 ) return;
+	
+
+	InstallAnyByComponentOid ( 0, &oid, 0, encode, G_decode, B_decode,
+						extract, match, NULL, NULL);
+	comp_nibble_memory_free(mem_op);
+}
+
+/*
+ * Look up Oid-decoder mapping table by berval have either
+ * oid or description
+ */
+OidDecoderMapping*
+RetrieveOidDecoderMappingbyBV( struct berval* in ) {
+	if ( IsNumericOid ( in->bv_val, in->bv_len ) )
+		return RetrieveOidDecoderMappingbyOid( in->bv_val, in->bv_len );
+	else
+		return RetrieveOidDecoderMappingbyDesc( in->bv_val, in->bv_len );
+}
+
+/*
+ * Look up Oid-decoder mapping table by dotted OID
+ */
+OidDecoderMapping*
+RetrieveOidDecoderMappingbyOid( char* ch_oid, int oid_len ) {
+	Hash hash;
+	void *anyInfo;
+	AsnOid oid;
+	int strLen;
+	void* mem_op;
+
+	mem_op = comp_nibble_memory_allocator ( 128, 16 );
+	oid.octs = EncodeComponentOid ( mem_op, ch_oid, &oid_len);
+	oid.octetLen = oid_len;
+	if( oid_len <= 0 ) {
+		comp_nibble_memory_free( mem_op );
+		return NULL;
+	}
+	
+	/* use encoded oid as hash string */
+	hash = MakeHash ( oid.octs, oid.octetLen);
+	comp_nibble_memory_free( mem_op );
+	if (CheckForAndReturnValue (anyOidHashTblG, hash, &anyInfo))
+		return (OidDecoderMapping*) anyInfo;
+	else
+		return (OidDecoderMapping*) NULL;
+
+}
+
+/*
+ * Look up Oid-decoder mapping table by description
+ */
+OidDecoderMapping*
+RetrieveOidDecoderMappingbyDesc( char* desc, int desc_len ) {
+	Hash hash;
+	void *anyInfo;
+	AsnOid oid;
+	AttributeType* ad_type;
+	struct berval bv;
+	void* mem_op;
+
+	bv.bv_val = desc;
+	bv.bv_len = desc_len;
+	ad_type = at_bvfind( &bv );
+
+	oid.octs = ad_type->sat_atype.at_oid;
+	oid.octetLen = strlen ( oid.octs );
+
+	if ( !ad_type )
+		return (OidDecoderMapping*) NULL;
+
+	mem_op = comp_nibble_memory_allocator ( 128, 16 );
+
+	oid.octs = EncodeComponentOid ( mem_op, oid.octs , (int*)&oid.octetLen );
+	if( oid.octetLen <= 0 ) {
+		comp_nibble_memory_free( mem_op );
+		return (OidDecoderMapping*) NULL;
+	}
+	
+	/* use encoded oid as hash string */
+	hash = MakeHash ( oid.octs, oid.octetLen);
+	comp_nibble_memory_free( mem_op );
+	if (CheckForAndReturnValue (anyOidHashTblG, hash, &anyInfo))
+		return (OidDecoderMapping*) anyInfo;
+	else
+		return (OidDecoderMapping*) NULL;
+
+}
+void
+InstallAnyByComponentOid (int anyId, AsnOid *oid, unsigned int size,
+			EncodeFcn encode, gser_decoder_func* G_decode,
+			ber_tag_decoder_func* B_decode, ExtractFcn extract,
+			 MatchFcn match, FreeFcn free, PrintFcn print)
+{
+	ComponentAnyInfo *a;
+	Hash h;
+
+	a = (ComponentAnyInfo*) malloc (sizeof (ComponentAnyInfo));
+	a->anyId = anyId;
+	if ( oid ) {
+		a->oid.octs = malloc( oid->octetLen );
+		memcpy ( a->oid.octs, oid->octs, oid->octetLen );
+		a->oid.octetLen = oid->octetLen;
+	}
+	a->size = size;
+	a->Encode = encode;
+	a->GSER_Decode = G_decode;
+	a->BER_Decode = B_decode;
+	a->Match = match;
+	a->Extract = extract;
+	a->Free = free;
+	a->Print = print;
+
+	h = MakeHash (oid->octs, oid->octetLen);
+
+	if (anyOidHashTblG == NULL)
+		anyOidHashTblG = InitHash();
+
+	if(anyOidHashTblG != NULL)
+		Insert(anyOidHashTblG, a, h);
+}
+
+int
+BDecComponentTop  (
+ber_decoder_func *decoder _AND_
+void* mem_op _AND_
+GenBuf *b _AND_
+AsnTag tag _AND_
+AsnLen elmtLen _AND_
+void **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode) {
+	tag = BDecTag ( b, bytesDecoded );
+	elmtLen = BDecLen ( b, bytesDecoded );
+	if ( elmtLen <= 0 ) return (-1);
+	if ( tag != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE) ) {
+		return (-1);
+	}
+		
+	return (*decoder)( mem_op, b, tag, elmtLen, (ComponentSyntaxInfo*)v,(int*)bytesDecoded, mode );
+}
+
+/*
+ * ASN.1 specification of a distinguished name
+ * DistinguishedName ::= RDNSequence
+ * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
+ * RelativeDistinguishedName ::= SET SIZE(1..MAX) OF AttributeTypeandValue
+ * AttributeTypeandValue ::= SEQUENCE {
+ * 	type	AttributeType
+ *	value	AttributeValue
+ * }
+ * When dnMatch/rdnMatch is used in a component assertion value
+ * the component in DistinguishedName/RelativeDistinguishedName
+ * need to be converted to the LDAP encodings in RFC2253
+ * in order to be matched against the assertion value
+ * If allComponentMatch is used, the assertion value may be
+ * decoded into the Internal Representation(Component Tree)
+ * by the corresponding GSER or BER decoder
+ * Following routine converts a component tree(DistinguishedName) into
+ * LDAP encodings in RFC2253
+ * Example)
+ * IR : ComponentRDNSequence
+ * GSER : { { type cn, value sang },{ type o, value ibm}, {type c, value us} }
+ * LDAP Encodings : cn=sang,o=ibm,c=us 
+ */
+
+increment_bv_mem_by_size ( struct berval* in, int size ) {
+	int new_size = in->bv_len + size;
+	in->bv_val = realloc( in->bv_val, new_size );
+	in->bv_len = new_size;
+}
+
+int
+ConvertBER2Desc( char* in, int size, struct berval* out, int* pos ) {
+	int desc_size;
+	char* desc_ptr;
+	unsigned int firstArcNum;
+	unsigned int arcNum;
+	int i, rc, start_pos = *pos;
+	char buf[MAX_OID_LEN];
+	AttributeType *at;
+	struct berval bv_name;
+
+	/*convert BER oid to desc*/
+	for ( i = 0, arcNum = 0; (i < size) && (in[i] & 0x80 ); i++ )
+		arcNum = (arcNum << 7) + (in[i] & 0x7f);
+	arcNum = (arcNum << 7) + (in[i] & 0x7f);
+	i++;
+	firstArcNum = (unsigned short)(arcNum/40);
+	if ( firstArcNum > 2 )
+		firstArcNum = 2;
+	
+	arcNum = arcNum - (firstArcNum * 40 );
+
+	rc = intToAscii ( arcNum, buf );
+
+	/*check if the buffer can store the first/second arc and two dots*/
+	if ( out->bv_len < *pos + 2 + 1 + rc )
+		increment_bv_mem_by_size ( out, INCREMENT_SIZE );
+
+	if ( firstArcNum == 1)
+		out->bv_val[*pos] = '1';
+	else
+		out->bv_val[*pos] = '2';
+	(*pos)++;
+	out->bv_val[*pos] = '.';
+	(*pos)++;
+
+	memcpy( out->bv_val + *pos, buf, rc );
+	*pos += rc;
+	out->bv_val[*pos] = '.';
+	(*pos)++;
+
+	for ( ; i < size ; ) {
+		for ( arcNum=0; (i < size) && (in[i] & 0x80) ; i++ )
+			arcNum = (arcNum << 7) + (in[i] & 0x7f);
+		arcNum = (arcNum << 7) + (in[i] & 0x7f);
+		i++;
+
+		rc = intToAscii ( arcNum, buf );
+
+		if ( out->bv_len < *pos + rc + 1 )
+			increment_bv_mem_by_size ( out, INCREMENT_SIZE );
+
+		memcpy( out->bv_val + *pos, buf, rc );
+		*pos += rc;
+		out->bv_val[*pos] = '.';
+		(*pos)++;
+	}
+	(*pos)--;/*remove the last '.'*/
+
+	/*
+	 * lookup OID database to locate desc
+	 * then overwrite OID with desc in *out
+	 * If failed to look up desc, OID form is used
+	 */
+	bv_name.bv_val = out->bv_val + start_pos;
+	bv_name.bv_len = *pos - start_pos;
+	at = at_bvfind( &bv_name );
+	if ( !at )
+		return LDAP_SUCCESS;
+	desc_size = at->sat_cname.bv_len;
+	memcpy( out->bv_val + start_pos, at->sat_cname.bv_val, desc_size );
+	*pos = start_pos + desc_size;
+	return LDAP_SUCCESS;
+}
+
+int
+ConvertComponentAttributeTypeAndValue2RFC2253 ( irAttributeTypeAndValue* in, struct berval* out, int *pos ) {
+	int rc;
+	int value_size = ((ComponentUTF8String*)in->value.value)->value.octetLen;
+	char* value_ptr =  ((ComponentUTF8String*)in->value.value)->value.octs;
+
+	rc = ConvertBER2Desc( in->type.value.octs, in->type.value.octetLen, out, pos );
+	if ( rc != LDAP_SUCCESS ) return rc;
+	if ( out->bv_len < *pos + 1/*for '='*/  )
+		increment_bv_mem_by_size ( out, INCREMENT_SIZE );
+	/*Between type and value, put '='*/
+	out->bv_val[*pos] = '=';
+	(*pos)++;
+
+	/*Assume it is string*/		
+	if ( out->bv_len < *pos + value_size )
+		increment_bv_mem_by_size ( out, INCREMENT_SIZE );
+	memcpy( out->bv_val + *pos, value_ptr, value_size );
+	out->bv_len += value_size;
+	*pos += value_size;
+	
+	return LDAP_SUCCESS;
+}
+
+int
+ConvertRelativeDistinguishedName2RFC2253 ( irRelativeDistinguishedName* in, struct berval *out , int* pos) {
+	irAttributeTypeAndValue* attr_typeNvalue;
+	int rc;
+
+
+	FOR_EACH_LIST_ELMT( attr_typeNvalue, &in->comp_list)
+	{
+		rc = ConvertComponentAttributeTypeAndValue2RFC2253( attr_typeNvalue, out, pos );
+		if ( rc != LDAP_SUCCESS ) return LDAP_INVALID_SYNTAX;
+
+		if ( out->bv_len < *pos + 1/*for '+'*/  )
+			increment_bv_mem_by_size ( out, INCREMENT_SIZE );
+		/*between multivalued RDNs, put comma*/
+		out->bv_val[(*pos)++] = '+';
+	}
+	(*pos)--;/*remove the last '+'*/
+	return LDAP_SUCCESS;
+}
+
+int 
+ConvertRDN2RFC2253 ( irRelativeDistinguishedName* in, struct berval *out ) {
+	int rc, pos = 0;
+	out->bv_val = (char*)malloc( INITIAL_DN_SIZE );
+	out->bv_len = INITIAL_DN_SIZE;
+
+	rc = ConvertRelativeDistinguishedName2RFC2253 ( in, out , &pos);
+	if ( rc != LDAP_SUCCESS ) return rc;
+	out->bv_val[pos] = '\0';
+	out->bv_len = pos;
+	return LDAP_SUCCESS;
+}
+
+int
+ConvertRDNSequence2RFC2253( irRDNSequence *in, struct berval* out ) {
+	irRelativeDistinguishedName* rdn_seq;
+	AsnList* seq = &in->comp_list;
+	int pos = 0, rc ;
+
+	out->bv_val = (char*)malloc( INITIAL_DN_SIZE );
+	out->bv_len = INITIAL_DN_SIZE;
+
+	FOR_EACH_LIST_ELMT( rdn_seq, seq )
+	{
+		rc = ConvertRelativeDistinguishedName2RFC2253( rdn_seq, out, &pos );
+		if ( rc != LDAP_SUCCESS ) return LDAP_INVALID_SYNTAX;
+
+		if ( out->bv_len < pos + 1/*for ','*/ )
+			increment_bv_mem_by_size ( out, INCREMENT_SIZE );
+		/*Between RDN, put comma*/
+		out->bv_val[pos++] = ',';
+	}
+	pos--;/*remove the last '+'*/
+	out->bv_val[pos] = '\0';
+	out->bv_len =pos;
+	return LDAP_SUCCESS;
+}
+
+#endif
diff --git a/contrib/slapd-modules/comp_match/componentlib.h b/contrib/slapd-modules/comp_match/componentlib.h
new file mode 100644
index 0000000..1ebd11e
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/componentlib.h
@@ -0,0 +1,593 @@
+/* Copyright 2004 IBM Corporation
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ */
+/* ACKNOWLEDGEMENTS
+ * This work originally developed by Sang Seok Lim
+ * 2004/06/18	03:20:00	slim@OpenLDAP.org
+ */
+
+#ifndef _H_COMPONENT_MODULE
+#define _H_COMPONENT_MODULE
+
+#include "portable.h"
+#include <ac/string.h>
+#include <ac/socket.h>
+#include <ldap_pvt.h>
+#include "lutil.h"
+#include <ldap.h>
+#include <slap.h>
+#include <component.h>
+
+#include <asn-incl.h>
+#include "asn.h"
+#include <asn-gser.h>
+#include <string.h>
+
+#define MAX_IDENTIFIER_LEN	32
+#define COMPONENTNOT_NULL(ptr)  ((ptr) != NULL)
+
+typedef struct slap_component_type {
+        /*
+         * Don't change the order of following fields
+         * They are identical the first 9 fields of
+         * AttributeType
+         */
+        LDAPAttributeType               ct_atype;
+        struct berval                   ct_cname;
+        struct slap_attribute_type      *ct_sup;
+        struct slap_attribute_type      **ct_subtypes;
+        MatchingRule                    *ct_equality;
+        MatchingRule                    *ct_approx;
+        MatchingRule                    *ct_ordering;
+        MatchingRule                    *ct_substr;
+        Syntax                          *ct_syntax;
+} ComponentType;
+
+
+/*
+ * BIT STRING
+ */
+typedef struct ComponentBits {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnBits value;
+} ComponentBits;
+
+#define GASNBITS_PRESENT(abits) ((abits)->value.bits != NULL)
+#define COMPONENTBITS_PRESENT(abits) ((abits)->value.bits != NULL)
+int GEncComponentBits (GenBuf *b, ComponentBits* bits);
+int GDecComponentBits (void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentBits (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentBits (char* oid, ComponentSyntaxInfo *bits1 , ComponentSyntaxInfo* bits2);
+#define ExtractingComponentBits( mem_op, cr,data ) NULL
+
+/*
+ * BMP String
+ */
+typedef struct ComponentBMPString {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	BMPString value;
+} ComponentBMPString;
+
+int GEncComponentBMPString (GenBuf *b, ComponentBMPString* bmp);
+int GDecComponentBMPString (void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentBMPString (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+#define MatchingComponentBMPString MatchingComponentOcts
+#define ExtractingComponentBMPString( mem_op, cr, data ) NULL
+#define FreeComponentBMPString FreeComponentOcts
+
+/*
+ * BOOLEAN
+ */
+typedef struct ComponentBool {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnBool value;
+} ComponentBool;
+
+int GEncComponentBool (GenBuf *b, ComponentBool * bool );
+int GDecComponentBool ( void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentBool ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentBool (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentBool( mem_op, cr, data ) NULL
+#define FreeComponentBool(v) NULL
+
+/*
+ * ENUMERATED
+ */
+typedef struct ComponentEnum {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnEnum value;
+	struct berval value_identifier;/*Why this value is defined here?*/
+} ComponentEnum;
+
+int GEncComponentEnum (GenBuf *b, ComponentEnum* comp_enum);
+int GDecComponentEnum ( void* mem_op, GenBuf *a, void *result, AsnLen *bytesDecoded,int mode);
+int BDecComponentEnum ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentEnum (char *oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo * b);
+#define ExtractingComponentEnum( mem_op, cr, data ) NULL
+#define FreeComponentEnum FreeComponentInt
+
+/*
+ * IA5 String
+ */
+typedef struct ComponentIA5String {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	IA5String value;
+} ComponentIA5String;
+
+#define GEncComponentIA5String GEncComponentUTF8String
+#define GDecComponentIA5String GDecComponentUTF8String
+int
+BDecComponentIA5StringTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode );
+int BDecComponentIA5String ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+#define MatchingComponentIA5String MatchingComponentOcts
+#define ExtractingComponentIA5String(mem_op, cr,data)	NULL
+#define FreeComponentIA5String FreeComponentOcts
+
+
+/*
+ * INTEGER
+ */
+typedef struct ComponentInt {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	int value;
+} ComponentInt;
+
+#define GNOT_NULL(ptr) ((ptr) != NULL)
+int GEncComponentInt (GenBuf *b, ComponentInt *comp_int);
+int GDecComponentInt ( void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode );
+int BDecComponentInt ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentInt (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentInt(mem_op, cr,data)	NULL
+#define FreeComponentInt(v) NULL
+
+/*
+ * LIST Data Structure for C_LIST
+ */
+typedef struct ComponentList {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnList comp_list;
+} ComponentList;
+
+/*
+ * NULL
+ */
+typedef struct ComponentNull {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnNull value;
+} ComponentNull;
+
+int GEncComponentNull (GenBuf *b, ComponentNull* comp_null);
+int GDecComponentNull ( void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentNull ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentNullTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode );
+int MatchingComponentNull (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentNull(mem_op, cr, data)	NULL
+#define FreeComponentNull NULL
+
+/*
+ * Numeric String
+ */
+typedef struct ComponentNumericString {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	NumericString value;
+} ComponentNumericString;
+
+#define GEncComponentNumericString GEncComponentUTF8String
+#define GDecComponentNumericString GDecComponentUTF8String
+int BDecComponentNumericString ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+#define MatchingComponentNumericString MatchingComponentOcts
+#define ExtractingComponentNumericString(mem_op, cr,data)	NULL
+#define FreeComponentNumericString FreeComponentOcts
+
+/*
+ * OCTETS STRING
+ */
+typedef struct ComponentOcts {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnOcts value;
+} ComponentOcts;
+
+#define GASNOCTS_PRESENT(aocts) ((aocts)->value.octs != NULL)
+int GEncComponentOcts (GenBuf *b, ComponentOcts *octs);
+int GDecComponentOcts (void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentOctsTag ( void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode );
+int BDecComponentOcts (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentOcts (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentOcts(mem_op,cr,data)	NULL
+void FreeComponentOcts( ComponentOcts* octs );
+
+/*
+ * OID (Object Identifier)
+ */
+typedef struct ComponentOid {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnOid value;
+} ComponentOid;
+
+#define GASNOID_PRESENT(aoid) ASNOCTS_PRESENT(aoid)
+int GEncComponentOid (GenBuf *b, ComponentOid *oid);
+int GDecComponentOid (void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentOid (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentOid (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentOid(mem_op, cr, data)	NULL
+#define FreeComponentOid FreeComponentOcts
+
+/*
+ * Printable String
+ */
+typedef struct ComponentPrintableString{
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	PrintableString value;
+} ComponentPrintableString;
+#define GEncComponentPrintableString GEncComponentUTF8String
+#define GDecComponentPrintableString GDecComponentUTF8String
+int BDecComponentPrintableString (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentPrintableStringTag (void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode );
+#define MatchingComponentPrintableString MatchingComponentOcts
+#define ExtractingComponentPrintableString(mem_op, cr, data)	NULL
+#define FreeComponentPrintableString FreeComponentOcts
+
+/*
+ * REAL
+ */
+typedef struct ComponentReal{
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnReal value;
+} ComponentReal;
+
+int GEncComponentReal (GenBuf *b, ComponentReal* comp_real);
+int GDecComponentReal (void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentReal (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentReal (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentReal( mem_op, cr, data )	NULL
+#define FreeComponentReal(v) NULL
+
+/*
+ * Relative OID
+ */
+
+typedef struct ComponentRelativeOid {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	AsnRelativeOid value;
+} ComponentRelativeOid;
+
+int GEncComponentRelativeOid (GenBuf *b, ComponentRelativeOid *r_oid);
+int GDecComponentRelativeOid ( void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentRelativeOid ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentRelativeOid (char* oid, ComponentSyntaxInfo *a, ComponentSyntaxInfo *b);
+#define ExtractingComponentRelativeOid( mem_op, cr, data ) NULL
+#define FreeComponentRelativeOid FreeComponentOid
+
+/*
+ * Teletex String
+ */
+typedef struct ComponentTeletexString {
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	TeletexString value;
+} ComponentTeletexString;
+
+int GEncComponentTeletexString (GenBuf *b, ComponentTeletexString * tel_str);
+int GDecComponentTeletexString ( void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode );
+int BDecComponentTeletexStringTag (void* mem_op, GenBuf *b, void *v, AsnLen *bytesDecoded, int mode );
+int BDecComponentTeletexString( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *v, AsnLen *bytesDecoded, int mode );
+#define MatchingComponentTeletexString MatchingComponentOcts
+#define ExtractingComponentTeletexString(mem_op,cr,data)
+#define FreeComponentTeletexString FreeComponentOcts
+
+
+/*
+ * Universal String
+ */
+typedef struct ComponentUniversalString{
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	UniversalString value;
+} ComponentUniversalString;
+
+int GEncComponentUniversalString (GenBuf *b, ComponentUniversalString* uni_str);
+int GDecComponentUniversalString ( void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentUniversalString ( void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+#define MatchingComponentUniversalString MatchingComponentOcts
+#define ExtractingComponentUniversalString(mem_op,cr,data)
+#define FreeComponentUniversalString FreeComponentOcts
+
+/*
+ * UTF8 String
+ */
+typedef struct ComponentUTF8String{
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	UTF8String value;
+} ComponentUTF8String;
+
+int GEncComponentUTF8String (GenBuf *b, ComponentUTF8String * utf_str);
+int GDecComponentUTF8String (void* mem_op, GenBuf *b, void *result, AsnLen *bytesDecoded, int mode);
+int BDecComponentUTF8String (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+#define MatchingComponentUTF8String MatchingComponentOcts
+#define ExtractingComponentUTF8String(mem_op,cr,data)
+#define FreeComponentUTF8String FreeComponentOcts
+
+/*
+ * Visible String
+ */
+typedef struct ComponentVisibleString{
+	void* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	VisibleString value;
+} ComponentVisibleString;
+
+#define GEncComponentVisibleString GEncComponentUTF8String
+#define GDecComponentVisibleString GDecComponentUTF8String
+int BDecComponentVisibleString (void* mem_op, GenBuf *b, AsnTag tagId, AsnLen len, void *result, AsnLen *bytesDecoded, int mode);
+#define MatchingComponentVisibleString MatchingComponentOcts
+#define ExtractingComponentVisibleString(mem_op,cr,data)
+#define FreeComponentVisibleString FreeComponentOcts
+
+/*
+ * ANY and ANY DEFINED BY
+ */
+
+typedef int (*MatchFcn) (char*, void*, void*);
+typedef void* (*ExtractFcn) (void*, ComponentReference*, void * );
+
+typedef struct ComponentAnyInfo
+{
+	int		anyId;
+	AsnOid		oid;
+	ComponentInt	intId;
+	unsigned int	size;
+	EncodeFcn	Encode;
+	gser_decoder_func* GSER_Decode;
+	ber_tag_decoder_func* BER_Decode;
+	ExtractFcn	Extract;
+	MatchFcn	Match;
+	FreeFcn		Free;
+	PrintFcn	Print;
+} ComponentAnyInfo;
+
+typedef struct ComponentAnyInfo OidDecoderMapping ;
+
+typedef struct ComponentAny{
+	void*		syntax;
+	ComponentDesc	*comp_desc;
+	struct berval	identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentAnyInfo	*cai;
+	void		*value;
+} ComponentAny;
+
+typedef ComponentAny ComponentAnyDefinedBy;
+
+#define BDecComponentAnyDefinedBy BDecComponentAny
+#define GDecComponentAnyDefinedBy GDecComponentAny
+#define MatchingComponentAnyDefinedBy MatchingComponentAny
+#define FreeComponentAnyDefinedBy FreeComponentAny
+
+int GEncComponentAny (GenBuf *b, ComponentAny *comp_any);
+int BDecComponentAny ( void* mem_op, GenBuf *b, ComponentAny *result, AsnLen *bytesDecoded, int mode);
+int GDecComponentAny ( void* mem_op, GenBuf *b, ComponentAny *result, AsnLen *bytesDecoded, int mode);
+int MatchingComponentAny (char* oid, ComponentAny *a, ComponentAny *b);
+void FreeComponentAny ( ComponentAny*);
+
+void InstallAnyByComponentInt (int anyId, ComponentInt intId, unsigned int size, EncodeFcn encode, gser_decoder_func* G_decode, ber_tag_decoder_func B_decode, ExtractFcn extract, MatchFcn match, FreeFcn free, PrintFcn print);
+
+void InstallAnyByComponentOid (int anyId, AsnOid *oid, unsigned int size, EncodeFcn encode, gser_decoder_func* G_decode, ber_tag_decoder_func* B_decode, ExtractFcn extract, MatchFcn match, FreeFcn free, PrintFcn print);
+
+int CheckSelectTypeCorrect ( void* mem_op, ComponentAnyInfo *v, struct berval* select );
+
+OidDecoderMapping* RetrieveOidDecoderMappingbyBV( struct berval* in );
+OidDecoderMapping* RetrieveOidDecoderMappingbyOid( char* ch_oid, int oid_len );
+OidDecoderMapping* RetrieveOidDecoderMappingbyDesc( char* desc, int desc_len );
+/*
+ * UTCTime
+ */
+typedef ComponentVisibleString ComponentUTCTime;
+#define GEncComponentUTCTime GEncComponentUTF8String 
+#define GDecComponentUTCTime GDecComponentVisibleString
+#define BDecComponentUTCTime BDecComponentOcts
+#define MatchingComponentUTCTime MatchingComponentOcts
+#define ExtractingComponentUTCTime(mem_op,cr,data) NULL
+#define FreeComponentUTCTime FreeComponentOcts
+
+/*
+ * GeneralizedTime
+ */
+typedef ComponentVisibleString ComponentGeneralizedTime;
+int GEncComponentGeneralizedTime (GenBuf *b, ComponentGeneralizedTime *gen_time);
+#define GDecComponentGeneralizedTime GDecComponentVisibleString
+#define BDecComponentGeneralizedTime BDecComponentOcts
+#define MatchingComponentGeneralizedTime MatchingComponentOcts
+#define ExtractingComponentGeneralizedTime(mem_op,cr,data) NULL
+#define FreeComponentGeneralizedTime FreeComponentOcts
+
+typedef int converter_func LDAP_P ((
+	struct berval* in ));
+
+typedef struct asntype_to_syntax {
+	AsnTypeId	ats_typeId;
+	/* Syntax Descriptor */
+	char		*ats_syn_name;
+	/* Syntax OID */
+	char		*ats_syn_oid;
+	Syntax		*ats_syn;
+} AsnTypetoSyntax;
+
+typedef struct asntype_to_comp_matchingrule {
+	AsnTypeId	atc_typeId;
+	char*	atc_equality;
+	char*	atc_approx;
+	char*	atc_ordering;
+	char*	atc_substr;
+} AsnTypetoCompMatchingRule;
+
+typedef struct asntype_to_comp_desc {
+	AsnTypeId	atcd_typeId;
+	ComponentDesc	atcd_cd;
+} AsnTypetoCompDesc;
+
+typedef struct asntype_to_comp_type {
+	AsnTypeId	ac_asn_id;
+	ComponentType   ac_comp_type;
+} AsnTypetoCompType;
+
+/* refined matching purpose */
+typedef struct asntype_to_matchingrule {
+	AsnTypeId	atmr_typeId;
+	char*		atmr_mr_name;
+	/*Implicitly corresponding LDAP syntax OID*/
+	char*		atmr_syn_oid;
+	MatchingRule	*atmr_mr;
+} AsnTypetoMatchingRule;
+
+typedef struct asntype_to_matchingrule_table {
+	char*	atmr_oid;
+	struct asntype_to_matchingrule atmr_table[ASNTYPE_END];
+	struct asntype_to_matchingrule_table* atmr_table_next;
+} AsnTypetoMatchingRuleTable;
+
+#define MAX_OID_LEN 256
+#define MAX_OD_ENTRY 8
+
+/*
+ * Object Identifier and corresponding Syntax Decoder Table
+ */
+typedef struct OID_Decoder_entry {
+        char            oe_oid[MAX_OID_LEN];
+        gser_decoder_func*   oe_gser_decoder;
+        ber_decoder_func*   oe_ber_decoder;
+	converter_func* oe_converter;
+        struct OID_Decoder_entry*       oe_next;
+        struct OID_Decoder_entry*       oe_prev;
+} OD_entry;
+
+void
+m_convert_asn_to_ldap ( ComponentSyntaxInfo* csi, struct berval* bv);
+int
+m_convert_assert_to_comp ( gser_decoder_func* decoder, struct berval* bv,
+                        ComponentSyntaxInfo** csi, int len, int mode );
+void*
+m_convert_attr_to_comp ( Attribute* a, struct berval* bv );
+
+/*
+ * Decoder Modes
+ * Different operation is required to handle Decoding(2), Extracted Component
+ * decoding(0), ANY DEFINED TYPe(2)
+ * b0 : Component Alloc(yes)
+ *	Constructed type : Component Alloc (Yes)
+ *	Primitive type : Component Alloc (Yes)
+ * 	set to mode 2 in inner decoders
+ * b1 : Component Alloc (No)
+ *	Constructed type : Component Alloc (No)
+ *	Primitive type : Component Alloc (No)
+ *	set to mode 2 in inner decoders
+ * b2 : Default Mode
+ *	Constructed type : Component Alloc (Yes)
+ *	Primitive type : Component Alloc (No)
+ * in addition to above modes, the 4th bit has special meaning,
+ * b4 : if the 4th bit is clear, DecxxxContent is called
+ * b4 : if the 4th bit is set, Decxxx is called, then it is cleared.
+ */
+#define DEC_ALLOC_MODE_0	0x01
+#define DEC_ALLOC_MODE_1	0x02
+#define DEC_ALLOC_MODE_2	0x04
+#define CALL_TAG_DECODER	0x08
+#define CALL_CONTENT_DECODER	~0x08
+
+#define OID_ALL_COMP_MATCH "1.2.36.79672281.1.13.6"
+#define OID_COMP_FILTER_MATCH "1.2.36.79672281.1.13.2"
+#define MAX_LDAP_STR_LEN 128
+
+MatchingRule*
+retrieve_matching_rule( char* mr_oid, AsnTypeId type );
+
+#define INITIAL_DN_SIZE 128
+#define INITIAL_ATTR_SIZE 256
+#define INCREMENT_SIZE 32
+/*
+ * The following are for conversion from ASN.1 RDN and DN to
+ * LDAP encodings
+ */
+#define MAX_ALIASING_ENTRY 128
+int increment_bv_mem ( struct berval* in );
+int intToAscii ( int value, char* buf );
+typedef ComponentList irRDNSequence;
+typedef ComponentList irRelativeDistinguishedName;
+typedef ComponentOid irAttributeType;
+typedef struct comp_irAttributeTypeAndValue /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	irAttributeType type; /* AttributeType */
+	ComponentAnyDefinedBy value; /* ANY DEFINED BY type */
+} irAttributeTypeAndValue;
+#define RDN_MATCH_OID "1.2.36.79672281.1.13.3"
+#define DN_MATCH_OID "2.5.13.1"
+
+extern AsnTypetoSyntax asn_to_syntax_mapping_tbl[];
+extern AsnTypetoCompMatchingRule asntype_to_compMR_mapping_tbl[];
+extern AsnTypetoCompType asntype_to_compType_mapping_tbl[];
+extern AsnTypetoCompDesc asntype_to_compdesc_mapping_tbl[];
+
+int ConvertRDN2RFC2253 ( irRelativeDistinguishedName* in, struct berval *out );
+int ConvertRDNSequence2RFC2253( irRDNSequence *in, struct berval* out );
+	
+void* comp_nibble_memory_allocator ( int init_mem, int inc_mem );
+
+ComponentDesc* get_ComponentDesc( int id );
+#endif
diff --git a/contrib/slapd-modules/comp_match/crl.c b/contrib/slapd-modules/comp_match/crl.c
new file mode 100644
index 0000000..abd82cd
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/crl.c
@@ -0,0 +1,1294 @@
+/*
+ *    crl.c
+ *    "CertificateRevokationList" ASN.1 module encode/decode/extracting/matching/free C src.
+ *    This file was generated by modified eSMACC compiler Fri Jan 21 11:25:24 2005
+ *    The generated files are supposed to be compiled as a module for OpenLDAP Software
+ */
+
+#include "crl.h"
+
+BDecComponentCertificateListTop( void* mem_op, GenBuf* b, void *v, AsnLen* bytesDecoded,int mode) {
+	AsnTag tag;
+	AsnLen elmtLen;
+
+	tag = BDecTag ( b, bytesDecoded );
+	elmtLen = BDecLen ( b, bytesDecoded );
+	if ( elmtLen <= 0 ) return (-1);
+	if ( tag != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE) ) {
+		return (-1);
+	}
+		
+	return BDecComponentCertificateList( mem_op, b, tag, elmtLen, ( ComponentCertificateList**)v, (AsnLen*)bytesDecoded, mode );
+}
+
+
+void init_module_CertificateRevokationList() {
+	InstallOidDecoderMapping( "2.5.4.39", NULL,
+		GDecComponentCertificateList,
+		BDecComponentCertificateListTop,
+		ExtractingComponentCertificateList,
+		MatchingComponentCertificateList);
+}
+
+int
+MatchingComponentTBSCertListSeqOfSeq ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentCertificateSerialNumber ( oid, (ComponentSyntaxInfo*)&((ComponentTBSCertListSeqOfSeq*)csi_attr)->userCertificate, (ComponentSyntaxInfo*)&((ComponentTBSCertListSeqOfSeq*)csi_assert)->userCertificate );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentTime ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertListSeqOfSeq*)csi_attr)->revocationDate, (ComponentSyntaxInfo*)((ComponentTBSCertListSeqOfSeq*)csi_assert)->revocationDate );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	if(COMPONENTNOT_NULL( ((ComponentTBSCertListSeqOfSeq*)csi_attr)->crlEntryExtensions ) ) {
+	rc =	MatchingComponentExtensions ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertListSeqOfSeq*)csi_attr)->crlEntryExtensions, (ComponentSyntaxInfo*)((ComponentTBSCertListSeqOfSeq*)csi_assert)->crlEntryExtensions );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentTBSCertListSeqOfSeq */
+
+void*
+ExtractingComponentTBSCertListSeqOfSeq ( void* mem_op, ComponentReference* cr, ComponentTBSCertListSeqOfSeq *comp )
+{
+
+	if ( ( comp->userCertificate.identifier.bv_val && strncmp(comp->userCertificate.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->userCertificate.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->userCertificate;
+		else
+		return NULL;
+	}
+	if ( ( comp->revocationDate->identifier.bv_val && strncmp(comp->revocationDate->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->revocationDate->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->revocationDate;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTime ( mem_op, cr, comp->revocationDate );
+		}
+	}
+	if ( ( comp->crlEntryExtensions->identifier.bv_val && strncmp(comp->crlEntryExtensions->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->crlEntryExtensions->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->crlEntryExtensions;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentExtensions ( mem_op, cr, comp->crlEntryExtensions );
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentTBSCertListSeqOfSeq */
+
+int
+BDecComponentTBSCertListSeqOfSeq PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentTBSCertListSeqOfSeq **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	int old_mode = mode;
+	int rc;
+	ComponentTBSCertListSeqOfSeq *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, INTEGER_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentCertificateSerialNumber (mem_op, b, tagId1, elmtLen1, (&k->userCertificate), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->userCertificate)->identifier.bv_val = (&k->userCertificate)->id_buf;
+		(&k->userCertificate)->identifier.bv_len = strlen("userCertificate");
+		strcpy( (&k->userCertificate)->identifier.bv_val, "userCertificate");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, UTCTIME_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, UTCTIME_TAG_CODE)) ||
+     (tagId1 ==MAKE_TAG_ID (UNIV, PRIM, GENERALIZEDTIME_TAG_CODE))||
+    (tagId1 == MAKE_TAG_ID (UNIV, CONS, GENERALIZEDTIME_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTime (mem_op, b, tagId1, elmtLen1, (&k->revocationDate), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->revocationDate)->identifier.bv_val = (k->revocationDate)->id_buf;
+		(k->revocationDate)->identifier.bv_len = strlen("revocationDate");
+		strcpy( (k->revocationDate)->identifier.bv_val, "revocationDate");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+    else
+        return -1;
+
+
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentExtensions (mem_op, b, tagId1, elmtLen1, (&k->crlEntryExtensions), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->crlEntryExtensions)->identifier.bv_val = (k->crlEntryExtensions)->id_buf;
+		(k->crlEntryExtensions)->identifier.bv_len = strlen("crlEntryExtensions");
+		strcpy( (k->crlEntryExtensions)->identifier.bv_val, "crlEntryExtensions");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertListSeqOfSeq*) CompAlloc( mem_op, sizeof(ComponentTBSCertListSeqOfSeq) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertListSeqOfSeq ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertListSeqOfSeq ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertListSeqOfSeq;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertListSeqOfSeq;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecTBSCertListSeqOfSeq*/
+
+int
+GDecComponentTBSCertListSeqOfSeq PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentTBSCertListSeqOfSeq **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentTBSCertListSeqOfSeq *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "userCertificate", strlen("userCertificate") ) == 0 ) {
+		rc = 	GDecComponentCertificateSerialNumber (mem_op, b, (&k->userCertificate), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->userCertificate)->identifier.bv_val = peek_head;
+	(&k->userCertificate)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "revocationDate", strlen("revocationDate") ) == 0 ) {
+		rc = 	GDecComponentTime (mem_op, b, (&k->revocationDate), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->revocationDate)->identifier.bv_val = peek_head;
+	( k->revocationDate)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "crlEntryExtensions", strlen("crlEntryExtensions") ) == 0 ) {
+		rc = 	GDecComponentExtensions (mem_op, b, (&k->crlEntryExtensions), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->crlEntryExtensions)->identifier.bv_val = peek_head;
+	( k->crlEntryExtensions)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertListSeqOfSeq*) CompAlloc( mem_op, sizeof(ComponentTBSCertListSeqOfSeq) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertListSeqOfSeq ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertListSeqOfSeq ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertListSeqOfSeq;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertListSeqOfSeq;
+	return LDAP_SUCCESS;
+}  /* GDecTBSCertListSeqOfSeq*/
+
+
+int
+MatchingComponentTBSCertListSeqOf ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+	void* component1, *component2;
+	AsnList *v1, *v2, t_list;
+
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	v1 = &((ComponentTBSCertListSeqOf*)csi_attr)->comp_list;
+	v2 = &((ComponentTBSCertListSeqOf*)csi_assert)->comp_list;
+	FOR_EACH_LIST_PAIR_ELMT(component1, component2, v1, v2)
+	{
+		if( MatchingComponentTBSCertListSeqOfSeq(oid, (ComponentSyntaxInfo*)component1, (ComponentSyntaxInfo*)component2) == LDAP_COMPARE_FALSE) {
+			return LDAP_COMPARE_FALSE;
+		}
+	} /* end of for */
+
+	AsnListFirst( v1 );
+	AsnListFirst( v2 );
+	if( (!component1 && component2) || (component1 && !component2))
+		return LDAP_COMPARE_FALSE;
+	else
+		return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentTBSCertListSeqOfContent */
+
+void*
+ExtractingComponentTBSCertListSeqOf ( void* mem_op, ComponentReference* cr, ComponentTBSCertListSeqOf *comp )
+{
+	int count = 0;
+	int total;
+	AsnList *v = &comp->comp_list;
+	ComponentInt *k;
+	ComponentTBSCertListSeqOfSeq *component;
+
+
+	switch ( cr->cr_curr->ci_type ) {
+	case LDAP_COMPREF_FROM_BEGINNING :
+		count = cr->cr_curr->ci_val.ci_from_beginning;
+		FOR_EACH_LIST_ELMT( component , v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL )
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentTBSCertListSeqOfSeq ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_FROM_END :
+		total = AsnListCount ( v );
+		count = cr->cr_curr->ci_val.ci_from_end;
+		count = total + count +1;
+		FOR_EACH_LIST_ELMT ( component, v ) {
+			if( --count == 0 ) {
+				if( cr->cr_curr->ci_next == NULL ) 
+					return component;
+				else {
+					cr->cr_curr = cr->cr_curr->ci_next;
+					return 	ExtractingComponentTBSCertListSeqOfSeq ( mem_op, cr, component );
+				}
+			}
+		}
+		break;
+	case LDAP_COMPREF_ALL :
+		return comp;
+	case LDAP_COMPREF_COUNT :
+		k = (ComponentInt*)CompAlloc( mem_op, sizeof(ComponentInt));
+		k->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+		k->comp_desc->cd_tag = (-1);
+		k->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentInt;
+		k->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentInt;
+		k->comp_desc->cd_extract_i = (extract_component_from_id_func*)NULL;
+		k->comp_desc->cd_type = ASN_BASIC;
+		k->comp_desc->cd_type_id = BASICTYPE_INTEGER;
+		k->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentInt;
+		k->value = AsnListCount(v);
+		return k;
+	default :
+		return NULL;
+	}
+}  /* ExtractingComponentTBSCertListSeqOf */
+
+int
+BDecComponentTBSCertListSeqOf PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentTBSCertListSeqOf **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentTBSCertListSeqOf *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit(&k->comp_list,sizeof(ComponentTBSCertListSeqOfSeq));
+    for (totalElmtsLen1 = 0; (totalElmtsLen1 < elmtLen0) || (elmtLen0 == INDEFINITE_LEN);)
+    {
+        ComponentTBSCertListSeqOfSeq **tmpVar;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if ((tagId1 == EOC_TAG_ID) && (elmtLen0 == INDEFINITE_LEN))
+    {
+        BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+        break; /* got EOC so can exit this SET OF/SEQ OF's for loop*/
+    }
+    if ((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE)))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+    tmpVar = (ComponentTBSCertListSeqOfSeq**) CompAsnListAppend (mem_op,&k->comp_list);
+	rc = BDecComponentTBSCertListSeqOfSeq (mem_op, b, tagId1, elmtLen1, tmpVar, &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+    }  /* end of tag check if */
+    else  /* wrong tag */
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+    } /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertListSeqOf*) CompAlloc( mem_op, sizeof(ComponentTBSCertListSeqOf) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertListSeqOf ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertListSeqOf ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertListSeqOf;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertListSeqOf;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecTBSCertListSeqOfContent */
+
+int
+GDecComponentTBSCertListSeqOf PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentTBSCertListSeqOf **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentTBSCertListSeqOf *k,*t, c_temp;
+
+
+	int ElmtsLen1;
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	AsnListInit( &k->comp_list, sizeof( ComponentTBSCertListSeqOfSeq ) );
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_PEEK)) ){
+		Asn1Error("Error during Reading { in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	for (ElmtsLen1 = 0; ElmtsLen1 >= INDEFINITE_LEN; ElmtsLen1++)
+	{
+		ComponentTBSCertListSeqOfSeq **tmpVar;
+		if( !(strLen = LocateNextGSERToken(mem_op,b, &peek_head, GSER_NO_COPY)) ){
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		if(*peek_head == '}') break;
+		if( !(*peek_head == '{' || *peek_head ==',') ) {
+			return LDAP_PROTOCOL_ERROR;
+		}
+		tmpVar = (ComponentTBSCertListSeqOfSeq**) CompAsnListAppend (mem_op, &k->comp_list);
+		if ( tmpVar == NULL ) {
+			Asn1Error("Error during Reading{ in encoding");
+			return LDAP_PROTOCOL_ERROR;
+		}
+		rc = 	GDecComponentTBSCertListSeqOfSeq (mem_op, b, tmpVar, bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	} /* end of for */
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertListSeqOf*) CompAlloc( mem_op, sizeof(ComponentTBSCertListSeqOf) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertListSeqOf ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertListSeqOf ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertListSeqOf;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertListSeqOf;
+	return LDAP_SUCCESS;
+}  /* GDecTBSCertListSeqOfContent */
+
+int
+MatchingComponentTBSCertList ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	if(COMPONENTNOT_NULL( ((ComponentTBSCertList*)csi_attr)->version ) ) {
+	rc =	MatchingComponentVersion ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->version, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->version );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	rc =	MatchingComponentAlgorithmIdentifier ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->signature, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->signature );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentName ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->issuer, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->issuer );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentTime ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->thisUpdate, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->thisUpdate );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	if(COMPONENTNOT_NULL( ((ComponentTBSCertList*)csi_attr)->nextUpdate ) ) {
+	rc =	MatchingComponentTime ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->nextUpdate, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->nextUpdate );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	rc =	MatchingComponentTBSCertListSeqOf ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->revokedCertificates, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->revokedCertificates );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	if(COMPONENTNOT_NULL( ((ComponentTBSCertList*)csi_attr)->crlExtensions ) ) {
+	rc =	MatchingComponentExtensions ( oid, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_attr)->crlExtensions, (ComponentSyntaxInfo*)((ComponentTBSCertList*)csi_assert)->crlExtensions );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	}
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentTBSCertList */
+
+void*
+ExtractingComponentTBSCertList ( void* mem_op, ComponentReference* cr, ComponentTBSCertList *comp )
+{
+
+	if ( ( comp->version->identifier.bv_val && strncmp(comp->version->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->version->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->version;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentVersion ( mem_op, cr, comp->version );
+		}
+	}
+	if ( ( comp->signature->identifier.bv_val && strncmp(comp->signature->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->signature->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->signature;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentAlgorithmIdentifier ( mem_op, cr, comp->signature );
+		}
+	}
+	if ( ( comp->issuer->identifier.bv_val && strncmp(comp->issuer->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->issuer->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->issuer;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentName ( mem_op, cr, comp->issuer );
+		}
+	}
+	if ( ( comp->thisUpdate->identifier.bv_val && strncmp(comp->thisUpdate->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->thisUpdate->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->thisUpdate;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTime ( mem_op, cr, comp->thisUpdate );
+		}
+	}
+	if ( ( comp->nextUpdate->identifier.bv_val && strncmp(comp->nextUpdate->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->nextUpdate->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->nextUpdate;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTime ( mem_op, cr, comp->nextUpdate );
+		}
+	}
+	if ( ( comp->revokedCertificates->identifier.bv_val && strncmp(comp->revokedCertificates->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->revokedCertificates->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->revokedCertificates;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTBSCertListSeqOf ( mem_op, cr, comp->revokedCertificates );
+		}
+	}
+	if ( ( comp->crlExtensions->identifier.bv_val && strncmp(comp->crlExtensions->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->crlExtensions->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->crlExtensions;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentExtensions ( mem_op, cr, comp->crlExtensions );
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentTBSCertList */
+
+int
+BDecComponentTBSCertList PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentTBSCertList **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	AsnLen totalElmtsLen2 = 0;
+	AsnLen elmtLen2;
+	AsnTag tagId2;
+	int old_mode = mode;
+	int rc;
+	ComponentTBSCertList *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, INTEGER_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentVersion (mem_op, b, tagId1, elmtLen1, (&k->version), &totalElmtsLen1, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->version)->identifier.bv_val = (k->version)->id_buf;
+		(k->version)->identifier.bv_len = strlen("version");
+		strcpy( (k->version)->identifier.bv_val, "version");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentAlgorithmIdentifier (mem_op, b, tagId1, elmtLen1, (&k->signature), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->signature)->identifier.bv_val = (k->signature)->id_buf;
+		(k->signature)->identifier.bv_len = strlen("signature");
+		strcpy( (k->signature)->identifier.bv_val, "signature");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentName (mem_op, b, tagId1, elmtLen1, (&k->issuer), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->issuer)->identifier.bv_val = (k->issuer)->id_buf;
+		(k->issuer)->identifier.bv_len = strlen("issuer");
+		strcpy( (k->issuer)->identifier.bv_val, "issuer");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, UTCTIME_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, UTCTIME_TAG_CODE)) ||
+     (tagId1 ==MAKE_TAG_ID (UNIV, PRIM, GENERALIZEDTIME_TAG_CODE))||
+    (tagId1 == MAKE_TAG_ID (UNIV, CONS, GENERALIZEDTIME_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTime (mem_op, b, tagId1, elmtLen1, (&k->thisUpdate), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->thisUpdate)->identifier.bv_val = (k->thisUpdate)->id_buf;
+		(k->thisUpdate)->identifier.bv_len = strlen("thisUpdate");
+		strcpy( (k->thisUpdate)->identifier.bv_val, "thisUpdate");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, UTCTIME_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, UTCTIME_TAG_CODE)) ||
+     (tagId1 ==MAKE_TAG_ID (UNIV, PRIM, GENERALIZEDTIME_TAG_CODE))||
+    (tagId1 == MAKE_TAG_ID (UNIV, CONS, GENERALIZEDTIME_TAG_CODE))))
+    {
+        elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTime (mem_op, b, tagId1, elmtLen1, (&k->nextUpdate), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->nextUpdate)->identifier.bv_val = (k->nextUpdate)->id_buf;
+		(k->nextUpdate)->identifier.bv_len = strlen("nextUpdate");
+		strcpy( (k->nextUpdate)->identifier.bv_val, "nextUpdate");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTBSCertListSeqOf (mem_op, b, tagId1, elmtLen1, (&k->revokedCertificates), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->revokedCertificates)->identifier.bv_val = (k->revokedCertificates)->id_buf;
+		(k->revokedCertificates)->identifier.bv_len = strlen("revokedCertificates");
+		strcpy( (k->revokedCertificates)->identifier.bv_val, "revokedCertificates");
+    if ((elmtLen0 != INDEFINITE_LEN) && (totalElmtsLen1 == elmtLen0))
+        seqDone = TRUE;
+    else
+    {
+        tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+         if ((elmtLen0 == INDEFINITE_LEN) && (tagId1 == EOC_TAG_ID))
+        {
+            BDEC_2ND_EOC_OCTET (b, &totalElmtsLen1 )
+            seqDone = TRUE;
+        }
+    }
+    }
+    else
+        return -1;
+
+
+
+    if ((!seqDone) && ((tagId1 == MAKE_TAG_ID (CNTX, CONS, 0))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+        tagId2 = BDecTag (b, &totalElmtsLen1 );
+
+    if (tagId2 != MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))
+    {
+         Asn1Error ("Unexpected Tag\n");
+         return -1;
+    }
+
+    elmtLen2 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentExtensions (mem_op, b, tagId2, elmtLen2, (&k->crlExtensions), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->crlExtensions)->identifier.bv_val = (k->crlExtensions)->id_buf;
+		(k->crlExtensions)->identifier.bv_len = strlen("crlExtensions");
+		strcpy( (k->crlExtensions)->identifier.bv_val, "crlExtensions");
+	if (elmtLen1 == INDEFINITE_LEN)
+        BDecEoc (b, &totalElmtsLen1 );
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertList*) CompAlloc( mem_op, sizeof(ComponentTBSCertList) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertList ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertList ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertList;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertList;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecTBSCertList*/
+
+int
+GDecComponentTBSCertList PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentTBSCertList **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentTBSCertList *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "version", strlen("version") ) == 0 ) {
+		rc = 	GDecComponentVersion (mem_op, b, (&k->version), bytesDecoded, DEC_ALLOC_MODE_0 );
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->version)->identifier.bv_val = peek_head;
+	( k->version)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "signature", strlen("signature") ) == 0 ) {
+		rc = 	GDecComponentAlgorithmIdentifier (mem_op, b, (&k->signature), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->signature)->identifier.bv_val = peek_head;
+	( k->signature)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "issuer", strlen("issuer") ) == 0 ) {
+		rc = 	GDecComponentName (mem_op, b, (&k->issuer), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->issuer)->identifier.bv_val = peek_head;
+	( k->issuer)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "thisUpdate", strlen("thisUpdate") ) == 0 ) {
+		rc = 	GDecComponentTime (mem_op, b, (&k->thisUpdate), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->thisUpdate)->identifier.bv_val = peek_head;
+	( k->thisUpdate)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "nextUpdate", strlen("nextUpdate") ) == 0 ) {
+		rc = 	GDecComponentTime (mem_op, b, (&k->nextUpdate), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->nextUpdate)->identifier.bv_val = peek_head;
+	( k->nextUpdate)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "revokedCertificates", strlen("revokedCertificates") ) == 0 ) {
+		rc = 	GDecComponentTBSCertListSeqOf (mem_op, b, (&k->revokedCertificates), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->revokedCertificates)->identifier.bv_val = peek_head;
+	( k->revokedCertificates)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "crlExtensions", strlen("crlExtensions") ) == 0 ) {
+		rc = 	GDecComponentExtensions (mem_op, b, (&k->crlExtensions), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->crlExtensions)->identifier.bv_val = peek_head;
+	( k->crlExtensions)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentTBSCertList*) CompAlloc( mem_op, sizeof(ComponentTBSCertList) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentTBSCertList ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentTBSCertList ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentTBSCertList;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentTBSCertList;
+	return LDAP_SUCCESS;
+}  /* GDecTBSCertList*/
+
+
+int
+MatchingComponentCertificateList ( char* oid, ComponentSyntaxInfo* csi_attr, ComponentSyntaxInfo* csi_assert ) {
+	int rc;
+	MatchingRule* mr;
+
+	if ( oid ) {
+		mr = retrieve_matching_rule( oid, csi_attr->csi_comp_desc->cd_type_id);
+		if ( mr ) return component_value_match( mr, csi_attr, csi_assert );
+	}
+
+	rc = 1;
+	rc =	MatchingComponentTBSCertList ( oid, (ComponentSyntaxInfo*)((ComponentCertificateList*)csi_attr)->tbsCertList, (ComponentSyntaxInfo*)((ComponentCertificateList*)csi_assert)->tbsCertList );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentAlgorithmIdentifier ( oid, (ComponentSyntaxInfo*)((ComponentCertificateList*)csi_attr)->signatureAlgorithm, (ComponentSyntaxInfo*)((ComponentCertificateList*)csi_assert)->signatureAlgorithm );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	rc =	MatchingComponentBits ( oid, (ComponentSyntaxInfo*)&((ComponentCertificateList*)csi_attr)->signature, (ComponentSyntaxInfo*)&((ComponentCertificateList*)csi_assert)->signature );
+	if ( rc != LDAP_COMPARE_TRUE )
+		return rc;
+	return LDAP_COMPARE_TRUE;
+}  /* BMatchingComponentCertificateList */
+
+void*
+ExtractingComponentCertificateList ( void* mem_op, ComponentReference* cr, ComponentCertificateList *comp )
+{
+
+	if ( ( comp->tbsCertList->identifier.bv_val && strncmp(comp->tbsCertList->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->tbsCertList->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->tbsCertList;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentTBSCertList ( mem_op, cr, comp->tbsCertList );
+		}
+	}
+	if ( ( comp->signatureAlgorithm->identifier.bv_val && strncmp(comp->signatureAlgorithm->identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->signatureAlgorithm->id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+			return comp->signatureAlgorithm;
+		else {
+			cr->cr_curr = cr->cr_curr->ci_next;
+			return 	ExtractingComponentAlgorithmIdentifier ( mem_op, cr, comp->signatureAlgorithm );
+		}
+	}
+	if ( ( comp->signature.identifier.bv_val && strncmp(comp->signature.identifier.bv_val, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) || ( strncmp(comp->signature.id_buf, cr->cr_curr->ci_val.ci_identifier.bv_val,cr->cr_curr->ci_val.ci_identifier.bv_len) == 0 ) ) {
+		if ( cr->cr_curr->ci_next == NULL )
+		return &comp->signature;
+	else if ( cr->cr_curr->ci_next->ci_type == LDAP_COMPREF_CONTENT) {
+			cr->cr_curr = cr->cr_curr->ci_next;
+		return &comp->signature;
+	 } else {
+		return NULL;
+		}
+	}
+	return NULL;
+}  /* ExtractingComponentCertificateList */
+
+int
+BDecComponentCertificateList PARAMS ((b, tagId0, elmtLen0, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+AsnTag tagId0 _AND_
+AsnLen elmtLen0 _AND_
+ComponentCertificateList **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	int seqDone = FALSE;
+	AsnLen totalElmtsLen1 = 0;
+	AsnLen elmtLen1;
+	AsnTag tagId1;
+	int mandatoryElmtCount1 = 0;
+	int old_mode = mode;
+	int rc;
+	ComponentCertificateList *k, *t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+    tagId1 = BDecTag (b, &totalElmtsLen1 );
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentTBSCertList (mem_op, b, tagId1, elmtLen1, (&k->tbsCertList), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->tbsCertList)->identifier.bv_val = (k->tbsCertList)->id_buf;
+		(k->tbsCertList)->identifier.bv_len = strlen("tbsCertList");
+		strcpy( (k->tbsCertList)->identifier.bv_val, "tbsCertList");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, CONS, SEQ_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentAlgorithmIdentifier (mem_op, b, tagId1, elmtLen1, (&k->signatureAlgorithm), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(k->signatureAlgorithm)->identifier.bv_val = (k->signatureAlgorithm)->id_buf;
+		(k->signatureAlgorithm)->identifier.bv_len = strlen("signatureAlgorithm");
+		strcpy( (k->signatureAlgorithm)->identifier.bv_val, "signatureAlgorithm");
+    tagId1 = BDecTag (b, &totalElmtsLen1);
+    }
+    else
+        return -1;
+
+
+
+    if (((tagId1 == MAKE_TAG_ID (UNIV, PRIM, BITSTRING_TAG_CODE)) ||
+(tagId1 == MAKE_TAG_ID (UNIV, CONS, BITSTRING_TAG_CODE))))
+    {
+    elmtLen1 = BDecLen (b, &totalElmtsLen1 );
+	rc = BDecComponentBits (mem_op, b, tagId1, elmtLen1, (&k->signature), &totalElmtsLen1, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		(&k->signature)->identifier.bv_val = (&k->signature)->id_buf;
+		(&k->signature)->identifier.bv_len = strlen("signature");
+		strcpy( (&k->signature)->identifier.bv_val, "signature");
+        seqDone = TRUE;
+        if (elmtLen0 == INDEFINITE_LEN)
+            BDecEoc (b, &totalElmtsLen1 );
+        else if (totalElmtsLen1 != elmtLen0)
+        return -1;
+
+    }
+    else
+        return -1;
+
+
+
+    if (!seqDone)
+        return -1;
+
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentCertificateList*) CompAlloc( mem_op, sizeof(ComponentCertificateList) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentCertificateList ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentCertificateList ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentCertificateList;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentCertificateList;
+    (*bytesDecoded) += totalElmtsLen1;
+	return LDAP_SUCCESS;
+}  /* BDecCertificateList*/
+
+int
+GDecComponentCertificateList PARAMS (( mem_op,b, v, bytesDecoded, mode),
+void* mem_op _AND_
+GenBuf * b _AND_
+ComponentCertificateList **v _AND_
+AsnLen *bytesDecoded _AND_
+int mode)
+{
+	char* peek_head,*peek_head2;
+	int i, strLen,strLen2, rc, old_mode = mode;
+	ComponentCertificateList *k,*t, c_temp;
+
+
+	if ( !(mode & DEC_ALLOC_MODE_1) ) {
+		memset(&c_temp,0,sizeof(c_temp));
+		 k = &c_temp;
+	} else
+		 k = t = *v;
+	mode = DEC_ALLOC_MODE_2;
+	*bytesDecoded = 0;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '{'){
+		Asn1Error("Missing { in encoded data");
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if ( strncmp( peek_head, "tbsCertList", strlen("tbsCertList") ) == 0 ) {
+		rc = 	GDecComponentTBSCertList (mem_op, b, (&k->tbsCertList), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->tbsCertList)->identifier.bv_val = peek_head;
+	( k->tbsCertList)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "signatureAlgorithm", strlen("signatureAlgorithm") ) == 0 ) {
+		rc = 	GDecComponentAlgorithmIdentifier (mem_op, b, (&k->signatureAlgorithm), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	( k->signatureAlgorithm)->identifier.bv_val = peek_head;
+	( k->signatureAlgorithm)->identifier.bv_len = strLen;
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+		Asn1Error("Error during Reading , ");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != ','){
+		Asn1Error("Missing , in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ){
+	  Asn1Error("Error during Reading identifier");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	}
+	if ( strncmp( peek_head, "signature", strlen("signature") ) == 0 ) {
+		rc = 	GDecComponentBits (mem_op, b, (&k->signature), bytesDecoded, mode);
+		if ( rc != LDAP_SUCCESS ) return rc;
+	(&k->signature)->identifier.bv_val = peek_head;
+	(&k->signature)->identifier.bv_len = strLen;
+	}
+	if( !(strLen = LocateNextGSERToken(mem_op,b,&peek_head,GSER_NO_COPY)) ) {
+		Asn1Error("Error during Reading } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if(*peek_head != '}'){
+		Asn1Error("Missing } in encoding");
+		return LDAP_PROTOCOL_ERROR;
+	}
+	if( !(old_mode & DEC_ALLOC_MODE_1) ) {
+	*v = t = (ComponentCertificateList*) CompAlloc( mem_op, sizeof(ComponentCertificateList) );
+	if ( !t ) return -1;
+	*t = *k;
+	}
+	t->syntax = (Syntax*)NULL;
+	t->comp_desc = CompAlloc( mem_op, sizeof( ComponentDesc ) );
+	if ( !t->comp_desc ) {
+		free ( t );
+		return -1;
+	}
+	t->comp_desc->cd_ldap_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_ber_encoder = (encoder_func*)NULL;
+	t->comp_desc->cd_gser_decoder = (gser_decoder_func*)GDecComponentCertificateList ;
+	t->comp_desc->cd_ber_decoder = (ber_decoder_func*)BDecComponentCertificateList ;
+	t->comp_desc->cd_free = (comp_free_func*)NULL;
+	t->comp_desc->cd_extract_i = (extract_component_from_id_func*)ExtractingComponentCertificateList;
+	t->comp_desc->cd_type = ASN_COMPOSITE;
+	t->comp_desc->cd_type_id = COMPOSITE_ASN1_TYPE;
+	t->comp_desc->cd_all_match = (allcomponent_matching_func*)MatchingComponentCertificateList;
+	return LDAP_SUCCESS;
+}  /* GDecCertificateList*/
diff --git a/contrib/slapd-modules/comp_match/crl.h b/contrib/slapd-modules/comp_match/crl.h
new file mode 100644
index 0000000..f2b4a24
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/crl.h
@@ -0,0 +1,359 @@
+
+#include "asn-incl.h"
+/*
+ *    crl.h
+ *    "CertificateRevokationList" ASN.1 module encode/decode/extracting/matching/free C src.
+ *    This file was generated by modified eSMACC compiler Fri Jan 21 11:25:24 2005
+ *    The generated files are strongly encouraged to be
+ *    compiled as a module for OpenLDAP Software
+ */
+
+#ifndef _crl_h_
+#define _crl_h_
+
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifdef _WIN32
+#pragma warning( disable : 4101 )
+#endif
+#include "componentlib.h"
+
+#define V1 0
+#define V2 1
+#define V3 2
+
+typedef ComponentInt ComponentVersion; /* INTEGER { V1 (0), V2 (1), V3 (2) }  */
+
+#define MatchingComponentVersion MatchingComponentInt
+
+#define ExtractingComponentVersion ExtractingComponentInt
+
+#define BDecComponentVersion BDecComponentInt
+
+#define GDecComponentVersion GDecComponentInt
+
+
+typedef ComponentInt ComponentCertificateSerialNumber; /* INTEGER */
+
+#define MatchingComponentCertificateSerialNumber MatchingComponentInt
+
+#define ExtractingComponentCertificateSerialNumber ExtractingComponentInt
+
+#define BDecComponentCertificateSerialNumber BDecComponentInt
+
+#define GDecComponentCertificateSerialNumber GDecComponentInt
+
+
+typedef ComponentOid ComponentAttributeType; /* OBJECT IDENTIFIER */
+
+#define MatchingComponentAttributeType MatchingComponentOid
+
+#define ExtractingComponentAttributeType ExtractingComponentOid
+
+#define BDecComponentAttributeType BDecComponentOid
+
+#define GDecComponentAttributeType GDecComponentOid
+
+
+typedef struct AlgorithmIdentifier /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid algorithm; /* OBJECT IDENTIFIER */
+	ComponentAnyDefinedBy parameters; /* ANY DEFINED BY algorithm OPTIONAL */
+} ComponentAlgorithmIdentifier;
+
+int MatchingComponentAlgorithmIdentifier PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentAlgorithmIdentifier PROTO (( void* mem_op, ComponentReference *cr, ComponentAlgorithmIdentifier *comp ));
+
+
+int BDecComponentAlgorithmIdentifier PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentAlgorithmIdentifier **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentAlgorithmIdentifier PROTO (( void* mem_op, GenBuf * b, ComponentAlgorithmIdentifier **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Time /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum TimeChoiceId
+    {
+        TIME_UTCTIME,
+        TIME_GENERALIZEDTIME
+    } choiceId;
+    union TimeChoiceUnion
+    {
+	ComponentUTCTime* utcTime; /* < unknown type id ?! > */
+	ComponentGeneralizedTime* generalizedTime; /* < unknown type id ?! > */
+    } a;
+} ComponentTime;
+
+int MatchingComponentTime PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentTime PROTO (( void* mem_op, ComponentReference *cr, ComponentTime *comp ));
+
+
+int BDecComponentTime PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentTime **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentTime PROTO (( void* mem_op, GenBuf * b, ComponentTime **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Extension /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentOid extnID; /* OBJECT IDENTIFIER */
+	ComponentBool* critical; /* BOOLEAN DEFAULT FALSE */
+	ComponentOcts extnValue; /* OCTET STRING */
+} ComponentExtension;
+
+int MatchingComponentExtension PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentExtension PROTO (( void* mem_op, ComponentReference *cr, ComponentExtension *comp ));
+
+
+int BDecComponentExtension PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentExtension **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentExtension PROTO (( void* mem_op, GenBuf * b, ComponentExtension **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct AttributeTypeAndValue /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentAttributeType type; /* AttributeType */
+	ComponentAnyDefinedBy value; /* ANY DEFINED BY type */
+} ComponentAttributeTypeAndValue;
+
+int MatchingComponentAttributeTypeAndValue PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentAttributeTypeAndValue PROTO (( void* mem_op, ComponentReference *cr, ComponentAttributeTypeAndValue *comp ));
+
+
+int BDecComponentAttributeTypeAndValue PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentAttributeTypeAndValue **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentAttributeTypeAndValue PROTO (( void* mem_op, GenBuf * b, ComponentAttributeTypeAndValue **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentExtensions; /* SEQUENCE SIZE 1..MAX OF Extension */
+
+int MatchingComponentExtensions PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentExtensions PROTO (( void* mem_op, ComponentReference *cr, ComponentExtensions *comp ));
+
+
+int BDecComponentExtensions PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentExtensions **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentExtensions PROTO (( void* mem_op, GenBuf * b, ComponentExtensions **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct TBSCertListSeqOfSeq /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentCertificateSerialNumber userCertificate; /* CertificateSerialNumber */
+	ComponentTime* revocationDate; /* Time */
+	ComponentExtensions* crlEntryExtensions; /* Extensions OPTIONAL */
+} ComponentTBSCertListSeqOfSeq;
+
+int MatchingComponentTBSCertListSeqOfSeq PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentTBSCertListSeqOfSeq PROTO (( void* mem_op, ComponentReference *cr, ComponentTBSCertListSeqOfSeq *comp ));
+
+
+int BDecComponentTBSCertListSeqOfSeq PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentTBSCertListSeqOfSeq **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentTBSCertListSeqOfSeq PROTO (( void* mem_op, GenBuf * b, ComponentTBSCertListSeqOfSeq **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentTBSCertListSeqOf; /* SEQUENCE OF TBSCertListSeqOfSeq */
+
+int MatchingComponentTBSCertListSeqOf PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentTBSCertListSeqOf PROTO (( void* mem_op, ComponentReference *cr, ComponentTBSCertListSeqOf *comp ));
+
+
+int BDecComponentTBSCertListSeqOf PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentTBSCertListSeqOf **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentTBSCertListSeqOf PROTO (( void* mem_op, GenBuf * b, ComponentTBSCertListSeqOf **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentRelativeDistinguishedName; /* SET OF AttributeTypeAndValue */
+
+int MatchingComponentRelativeDistinguishedName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentRelativeDistinguishedName PROTO (( void* mem_op, ComponentReference *cr, ComponentRelativeDistinguishedName *comp ));
+
+
+int BDecComponentRelativeDistinguishedName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentRelativeDistinguishedName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentRelativeDistinguishedName PROTO (( void* mem_op, GenBuf * b, ComponentRelativeDistinguishedName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef ComponentList ComponentRDNSequence; /* SEQUENCE OF RelativeDistinguishedName */
+
+int MatchingComponentRDNSequence PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentRDNSequence PROTO (( void* mem_op, ComponentReference *cr, ComponentRDNSequence *comp ));
+
+
+int BDecComponentRDNSequence PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentRDNSequence **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentRDNSequence PROTO (( void* mem_op, GenBuf * b, ComponentRDNSequence **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Name /* CHOICE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+    enum NameChoiceId
+    {
+        NAME_RDNSEQUENCE
+    } choiceId;
+    union NameChoiceUnion
+    {
+	ComponentRDNSequence* rdnSequence; /* RDNSequence */
+    } a;
+} ComponentName;
+
+int MatchingComponentName PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentName PROTO (( void* mem_op, ComponentReference *cr, ComponentName *comp ));
+
+
+int BDecComponentName PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentName **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentName PROTO (( void* mem_op, GenBuf * b, ComponentName **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct TBSCertList /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentVersion* version; /* Version OPTIONAL */
+	ComponentAlgorithmIdentifier* signature; /* AlgorithmIdentifier */
+	ComponentName* issuer; /* Name */
+	ComponentTime* thisUpdate; /* Time */
+	ComponentTime* nextUpdate; /* Time OPTIONAL */
+	ComponentTBSCertListSeqOf* revokedCertificates; /* TBSCertListSeqOf */
+	ComponentExtensions* crlExtensions; /* [0] EXPLICIT Extensions OPTIONAL */
+} ComponentTBSCertList;
+
+int MatchingComponentTBSCertList PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentTBSCertList PROTO (( void* mem_op, ComponentReference *cr, ComponentTBSCertList *comp ));
+
+
+int BDecComponentTBSCertList PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentTBSCertList **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentTBSCertList PROTO (( void* mem_op, GenBuf * b, ComponentTBSCertList **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct CertificateList /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentTBSCertList* tbsCertList; /* TBSCertList */
+	ComponentAlgorithmIdentifier* signatureAlgorithm; /* AlgorithmIdentifier */
+	ComponentBits signature; /* BIT STRING */
+} ComponentCertificateList;
+
+int MatchingComponentCertificateList PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentCertificateList PROTO (( void* mem_op, ComponentReference *cr, ComponentCertificateList *comp ));
+
+
+int BDecComponentCertificateList PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentCertificateList **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentCertificateList PROTO (( void* mem_op, GenBuf * b, ComponentCertificateList **v, AsnLen *bytesDecoded, int mode));
+
+
+
+typedef struct Validity /* SEQUENCE */
+{
+	Syntax* syntax;
+	ComponentDesc* comp_desc;
+	struct berval identifier;
+	char id_buf[MAX_IDENTIFIER_LEN];
+	ComponentTime* notBefore; /* Time */
+	ComponentTime* notAfter; /* Time */
+} ComponentValidity;
+
+int MatchingComponentValidity PROTO (( char *oid, ComponentSyntaxInfo *, ComponentSyntaxInfo *v2 ));
+
+
+void* ExtractingComponentValidity PROTO (( void* mem_op, ComponentReference *cr, ComponentValidity *comp ));
+
+
+int BDecComponentValidity PROTO ((void* mem_op, GenBuf * b, AsnTag tagId0, AsnLen elmtLen0, ComponentValidity **v, AsnLen *bytesDecoded, int mode));
+
+
+int GDecComponentValidity PROTO (( void* mem_op, GenBuf * b, ComponentValidity **v, AsnLen *bytesDecoded, int mode));
+
+
+
+/* ========== Object Declarations ========== */
+
+
+/* ========== Object Set Declarations ========== */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#endif /* conditional include of crl.h */
diff --git a/contrib/slapd-modules/comp_match/init.c b/contrib/slapd-modules/comp_match/init.c
new file mode 100644
index 0000000..c3ab83c
--- /dev/null
+++ b/contrib/slapd-modules/comp_match/init.c
@@ -0,0 +1,839 @@
+/* Copyright 2004 IBM Corporation
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ */
+/* ACKNOWLEDGEMENTS
+ * This work originally developed by Sang Seok Lim
+ * 2004/06/18	03:20:00	slim@OpenLDAP.org
+ */
+
+#include "portable.h"
+#include <ac/string.h>
+#include <ac/socket.h>
+#include <ldap_pvt.h>
+#include "lutil.h"
+#include <ldap.h>
+#include "slap.h"
+#include "component.h"
+
+#include "componentlib.h"
+#include "asn.h"
+#include <asn-gser.h>
+
+#include <string.h>
+
+#ifndef SLAPD_COMP_MATCH
+#define SLAPD_COMP_MATCH SLAPD_MOD_DYNAMIC
+#endif
+
+/*
+ * Attribute and MatchingRule aliasing table
+ */
+AttributeAliasing aa_table [ MAX_ALIASING_ENTRY ];
+MatchingRuleAliasing mra_table [ MAX_ALIASING_ENTRY ];
+
+OD_entry* gOD_table = NULL;
+AsnTypetoMatchingRuleTable* gATMR_table = NULL;
+
+int
+load_derived_matching_rule ( char* cfg_path ){
+}
+
+AttributeAliasing*
+comp_is_aliased_attribute( void *in  )
+{
+	AttributeAliasing* curr_aa;
+	int i;
+	AttributeDescription *ad = (AttributeDescription*)in;
+
+	for ( i = 0; aa_table[i].aa_aliasing_ad && i < MAX_ALIASING_ENTRY; i++ ) {
+		if ( strncmp(aa_table[i].aa_aliasing_ad->ad_cname.bv_val , ad->ad_cname.bv_val, ad->ad_cname.bv_len) == 0 )
+			return &aa_table[i];
+	}
+	return NULL;
+}
+
+static int
+add_aa_entry( int index, char* aliasing_at_name, char* aliased_at_name, char* mr_name, char* component_filter )
+{
+	char text[1][128];
+	int rc;
+	struct berval type;
+
+	/* get and store aliasing AttributeDescription */
+	type.bv_val = aliasing_at_name;
+	type.bv_len = strlen ( aliasing_at_name );
+	rc = slap_bv2ad ( &type, &aa_table[index].aa_aliasing_ad,(const char**)text );
+	if ( rc != LDAP_SUCCESS ) return rc;
+
+	/* get and store aliased AttributeDescription */
+	type.bv_val = aliased_at_name;
+	type.bv_len = strlen ( aliased_at_name );
+	rc = slap_bv2ad ( &type, &aa_table[index].aa_aliased_ad,(const char**)text );
+	if ( rc != LDAP_SUCCESS ) return rc;
+
+	/* get and store componentFilterMatch */
+	type.bv_val = mr_name;
+	type.bv_len = strlen ( mr_name);
+	aa_table[index].aa_mr = mr_bvfind ( &type );
+
+	/* get and store a component filter */
+	type.bv_val = component_filter;
+	type.bv_len = strlen ( component_filter );
+	rc = get_comp_filter( NULL, &type, &aa_table[index].aa_cf,(const char**)text);
+
+	aa_table[index].aa_cf_str = component_filter;
+
+	return rc;
+}
+
+/*
+ * Initialize attribute aliasing table when this module is loaded
+ * add_aa_entry ( index for the global table,
+ *                name of the aliasing attribute,
+ *                component filter with filling value parts "xxx"
+ *              )
+ * "xxx" will be replaced with effective values later.
+ * See RFC3687 to understand the content of a component filter.
+ */
+char* pre_processed_comp_filter[] = {
+/*1*/"item:{ component \"toBeSigned.issuer.rdnSequence\", rule distinguishedNameMatch, value xxx }",
+/*2*/"item:{ component \"toBeSigned.serialNumber\", rule integerMatch, value xxx }",
+/*3*/"and:{ item:{ component \"toBeSigned.serialNumber\", rule integerMatch, value xxx }, item:{ component \"toBeSigned.issuer.rdnSequence\", rule distinguishedNameMatch, value xxx } }"
+};
+
+static int
+init_attribute_aliasing_table ()
+{
+	int rc;
+	int index = 0 ;
+
+	rc = add_aa_entry ( index, "x509CertificateIssuer", "userCertificate","componentFilterMatch", pre_processed_comp_filter[index] );
+	if ( rc != LDAP_SUCCESS ) return LDAP_PARAM_ERROR;
+	index++;
+
+	rc = add_aa_entry ( index, "x509CertificateSerial","userCertificate", "componentFilterMatch", pre_processed_comp_filter[index] );
+	if ( rc != LDAP_SUCCESS ) return LDAP_PARAM_ERROR;
+	index++;
+
+	rc = add_aa_entry ( index, "x509CertificateSerialAndIssuer", "userCertificate", "componentFilterMatch", pre_processed_comp_filter[index] );
+	if ( rc != LDAP_SUCCESS ) return LDAP_PARAM_ERROR;
+	index++;
+
+	return LDAP_SUCCESS;
+}
+
+void
+init_component_description_table () {
+	AsnTypeId id;
+	struct berval mr;
+	AsnTypetoSyntax* asn_to_syn;
+	Syntax* syn;
+
+	for ( id = BASICTYPE_BOOLEAN; id != ASNTYPE_END ; id++ ) {
+		asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_subtypes = NULL;
+		asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_syntax =  NULL;
+
+		/* Equality Matching Rule */
+		if ( asntype_to_compMR_mapping_tbl[id].atc_equality ) {
+			mr.bv_val = asntype_to_compMR_mapping_tbl[id].atc_equality;
+			mr.bv_len = strlen(asntype_to_compMR_mapping_tbl[id].atc_equality);
+			asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_equality = mr_bvfind( &mr );
+		}
+		/* Approx Matching Rule */
+		if ( asntype_to_compMR_mapping_tbl[id].atc_approx ) {
+			mr.bv_val = asntype_to_compMR_mapping_tbl[id].atc_approx;
+			mr.bv_len = strlen(asntype_to_compMR_mapping_tbl[id].atc_approx);
+			asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_approx = mr_bvfind( &mr );
+		}
+
+		/* Ordering Matching Rule */
+		if ( asntype_to_compMR_mapping_tbl[id].atc_ordering ) {
+			mr.bv_val = asntype_to_compMR_mapping_tbl[id].atc_ordering;
+			mr.bv_len = strlen(asntype_to_compMR_mapping_tbl[id].atc_ordering);
+			asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_ordering= mr_bvfind( &mr );
+		}
+
+		/* Substr Matching Rule */
+		if ( asntype_to_compMR_mapping_tbl[id].atc_substr ) {
+			mr.bv_val = asntype_to_compMR_mapping_tbl[id].atc_substr;
+			mr.bv_len = strlen(asntype_to_compMR_mapping_tbl[id].atc_substr);
+			asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_substr = mr_bvfind( &mr );
+		}
+		/* Syntax */
+
+		asn_to_syn = &asn_to_syntax_mapping_tbl[ id ];
+		if ( asn_to_syn->ats_syn_oid )
+			syn = syn_find ( asn_to_syn->ats_syn_oid );
+		else 
+			syn = NULL;
+		asntype_to_compType_mapping_tbl[id].ac_comp_type.ct_syntax = syn;
+
+		/* Initialize Component Descriptions of primitive ASN.1 types */
+		asntype_to_compdesc_mapping_tbl[id].atcd_cd.cd_comp_type = (AttributeType*)&asntype_to_compType_mapping_tbl[id].ac_comp_type;
+	}
+}
+
+MatchingRule*
+retrieve_matching_rule( char* mr_oid, AsnTypeId type ) {
+	char* tmp;
+	struct berval mr_name = BER_BVNULL;
+	AsnTypetoMatchingRuleTable* atmr;
+
+	for ( atmr = gATMR_table ; atmr ; atmr = atmr->atmr_table_next ) {
+		if ( strcmp( atmr->atmr_oid, mr_oid ) == 0 ) {
+			tmp = atmr->atmr_table[type].atmr_mr_name;
+			if ( tmp ) {
+				mr_name.bv_val = tmp;
+				mr_name.bv_len = strlen( tmp );
+				return mr_bvfind ( &mr_name );
+			}
+		}
+	}
+	return (MatchingRule*)NULL;
+}
+
+void* 
+comp_convert_attr_to_comp LDAP_P (( Attribute* a, Syntax *syn, struct berval* bv ))
+{
+	char* peek_head;
+        int mode, bytesDecoded, size, rc;
+        void* component;
+	char* oid = a->a_desc->ad_type->sat_atype.at_oid ;
+        GenBuf* b = NULL;
+        ExpBuf* buf = NULL;
+	OidDecoderMapping* odm;
+	
+	/* look for the decoder registered for the given attribute */
+	odm = RetrieveOidDecoderMappingbyOid( oid, strlen(oid) );
+
+	if ( !odm || (!odm->BER_Decode && !odm->GSER_Decode) )
+		return (void*)NULL;
+
+	buf = ExpBufAllocBuf();
+	ExpBuftoGenBuf( buf, &b );
+	ExpBufInstallDataInBuf ( buf, bv->bv_val, bv->bv_len );
+	BufResetInReadMode( b );
+
+	mode = DEC_ALLOC_MODE_2;
+	/*
+	 * How can we decide which decoder will be called, GSER or BER?
+	 * Currently BER decoder is called for a certificate.
+	 * The flag of Attribute will say something about it in the future
+	 */
+	if ( syn && slap_syntax_is_ber ( syn ) ) {
+#if 0
+		rc =BDecComponentTop(odm->BER_Decode, a->a_comp_data->cd_mem_op, b, 0,0, &component,&bytesDecoded,mode ) ;
+#endif
+		rc = odm->BER_Decode ( a->a_comp_data->cd_mem_op, b, (ComponentSyntaxInfo*)&component, &bytesDecoded, mode );
+	}
+	else {
+		rc = odm->GSER_Decode( a->a_comp_data->cd_mem_op, b, (ComponentSyntaxInfo**)component, &bytesDecoded, mode);
+	}
+
+	ExpBufFreeBuf( buf );
+	GenBufFreeBuf( b );
+	if ( rc == -1 ) {
+#if 0
+		ShutdownNibbleMemLocal ( a->a_comp_data->cd_mem_op );
+		free ( a->a_comp_data );
+		a->a_comp_data = NULL;
+#endif
+		return (void*)NULL;
+	}
+	else {
+		return component;
+	}
+}
+
+#include <nibble-alloc.h>
+void
+comp_free_component ( void* mem_op ) {
+	ShutdownNibbleMemLocal( (NibbleMem*)mem_op );
+	return;
+}
+
+void
+comp_convert_assert_to_comp (
+	void* mem_op,
+	ComponentSyntaxInfo *csi_attr,
+	struct berval* bv,
+	ComponentSyntaxInfo** csi, int* len, int mode )
+{
+	int rc;
+	GenBuf* genBuf;
+	ExpBuf* buf;
+	gser_decoder_func *decoder = csi_attr->csi_comp_desc->cd_gser_decoder;
+
+	buf = ExpBufAllocBuf();
+	ExpBuftoGenBuf( buf, &genBuf );
+	ExpBufInstallDataInBuf ( buf, bv->bv_val, bv->bv_len );
+	BufResetInReadMode( genBuf );
+
+	if ( csi_attr->csi_comp_desc->cd_type_id == BASICTYPE_ANY )
+		decoder = ((ComponentAny*)csi_attr)->cai->GSER_Decode;
+
+	rc = (*decoder)( mem_op, genBuf, csi, len, mode );
+	ExpBufFreeBuf ( buf );
+	GenBufFreeBuf( genBuf );
+}
+
+int intToAscii( int value, char* buf ) {
+	int minus=0,i,temp;
+	int total_num_digits;
+
+	if ( value == 0 ){
+		buf[0] = '0';
+		return 1;
+	}
+
+	if ( value < 0 ){
+		minus = 1;
+		value = value*(-1);
+		buf[0] = '-';
+	}
+	
+	/* How many digits */
+	for ( temp = value, total_num_digits=0 ; temp ; total_num_digits++ )
+		temp = temp/10;
+
+	total_num_digits += minus;
+
+	for ( i = minus ; value ; i++ ) {
+		buf[ total_num_digits - i - 1 ]= (char)(value%10 + '0');
+		value = value/10;
+	}
+	return i;
+}
+
+int
+comp_convert_asn_to_ldap ( MatchingRule* mr, ComponentSyntaxInfo* csi, struct berval* bv, int *allocated )
+{
+	int rc;
+	struct berval prettied;
+	Syntax* syn;
+
+	AsnTypetoSyntax* asn_to_syn =
+		&asn_to_syntax_mapping_tbl[csi->csi_comp_desc->cd_type_id];
+	if ( asn_to_syn->ats_syn_oid )
+		csi->csi_syntax = syn_find ( asn_to_syn->ats_syn_oid );
+	else 
+		csi->csi_syntax = NULL;
+
+
+        switch ( csi->csi_comp_desc->cd_type_id ) {
+          case BASICTYPE_BOOLEAN :
+		bv->bv_val = (char*)malloc( 5 );
+		*allocated = 1;
+		bv->bv_len = 5;
+		if ( ((ComponentBool*)csi)->value > 0 ) {
+			strcpy ( bv->bv_val , "TRUE" );
+			bv->bv_len = 4;
+		}
+		else {
+			strcpy ( bv->bv_val , "FALSE" );
+			bv->bv_len = 5;
+		}
+                break ;
+          case BASICTYPE_NULL :
+                bv->bv_len = 0;
+                break;
+          case BASICTYPE_INTEGER :
+		bv->bv_val = (char*)malloc( INITIAL_ATTR_SIZE );
+		*allocated = 1;
+		bv->bv_len = INITIAL_ATTR_SIZE;
+		bv->bv_len = intToAscii(((ComponentInt*)csi)->value, bv->bv_val );
+		if ( bv->bv_len <= 0 )
+			return LDAP_INVALID_SYNTAX;
+                break;
+          case BASICTYPE_REAL :
+		return LDAP_INVALID_SYNTAX;
+          case BASICTYPE_ENUMERATED :
+		bv->bv_val = (char*)malloc( INITIAL_ATTR_SIZE );
+		*allocated = 1;
+		bv->bv_len = INITIAL_ATTR_SIZE;
+		bv->bv_len = intToAscii(((ComponentEnum*)csi)->value, bv->bv_val );
+		if ( bv->bv_len <= 0 )
+			return LDAP_INVALID_SYNTAX;
+                break;
+          case BASICTYPE_OID :
+          case BASICTYPE_OCTETSTRING :
+          case BASICTYPE_BITSTRING :
+          case BASICTYPE_NUMERIC_STR :
+          case BASICTYPE_PRINTABLE_STR :
+          case BASICTYPE_UNIVERSAL_STR :
+          case BASICTYPE_IA5_STR :
+          case BASICTYPE_BMP_STR :
+          case BASICTYPE_UTF8_STR :
+          case BASICTYPE_UTCTIME :
+          case BASICTYPE_GENERALIZEDTIME :
+          case BASICTYPE_GRAPHIC_STR :
+          case BASICTYPE_VISIBLE_STR :
+          case BASICTYPE_GENERAL_STR :
+          case BASICTYPE_OBJECTDESCRIPTOR :
+          case BASICTYPE_VIDEOTEX_STR :
+          case BASICTYPE_T61_STR :
+          case BASICTYPE_OCTETCONTAINING :
+          case BASICTYPE_BITCONTAINING :
+          case BASICTYPE_RELATIVE_OID :
+		bv->bv_val = ((ComponentOcts*)csi)->value.octs;
+		bv->bv_len = ((ComponentOcts*)csi)->value.octetLen;
+                break;
+	  case BASICTYPE_ANY :
+		csi = ((ComponentAny*)csi)->value;
+		if ( csi->csi_comp_desc->cd_type != ASN_BASIC ||
+			csi->csi_comp_desc->cd_type_id == BASICTYPE_ANY )
+			return LDAP_INVALID_SYNTAX;
+		return comp_convert_asn_to_ldap( mr, csi, bv, allocated );
+          case COMPOSITE_ASN1_TYPE :
+		break;
+          case RDNSequence :
+		/*dnMatch*/
+		if( strncmp( mr->smr_mrule.mr_oid, DN_MATCH_OID, strlen(DN_MATCH_OID) ) != 0 )
+			return LDAP_INVALID_SYNTAX;
+		*allocated = 1;
+		rc = ConvertRDNSequence2RFC2253( (irRDNSequence*)csi, bv );
+		if ( rc != LDAP_SUCCESS ) return rc;
+		break;
+          case RelativeDistinguishedName :
+		/*rdnMatch*/
+		if( strncmp( mr->smr_mrule.mr_oid, RDN_MATCH_OID, strlen(RDN_MATCH_OID) ) != 0 )
+			return LDAP_INVALID_SYNTAX;
+		*allocated = 1;
+		rc = ConvertRDN2RFC2253((irRelativeDistinguishedName*)csi,bv);
+		if ( rc != LDAP_SUCCESS ) return rc;
+		break;
+          case TelephoneNumber :
+          case FacsimileTelephoneNumber__telephoneNumber :
+		break;
+          case DirectoryString :
+		return LDAP_INVALID_SYNTAX;
+          case ASN_COMP_CERTIFICATE :
+          case ASNTYPE_END :
+		break;
+          default :
+                /*Only ASN Basic Type can be converted into LDAP string*/
+		return LDAP_INVALID_SYNTAX;
+        }
+
+	if ( csi->csi_syntax ) {
+		if ( csi->csi_syntax->ssyn_validate ) {
+ 			rc = csi->csi_syntax->ssyn_validate(csi->csi_syntax, bv);
+			if ( rc != LDAP_SUCCESS )
+				return LDAP_INVALID_SYNTAX;
+		}
+		if ( csi->csi_syntax->ssyn_pretty ) {
+			rc = csi->csi_syntax->ssyn_pretty(csi->csi_syntax, bv, &prettied , NULL );
+			if ( rc != LDAP_SUCCESS )
+				return LDAP_INVALID_SYNTAX;
+#if 0
+			free ( bv->bv_val );/*potential memory leak?*/
+#endif
+			bv->bv_val = prettied.bv_val;
+			bv->bv_len = prettied.bv_len;
+		}
+	}
+
+	return LDAP_SUCCESS;
+}
+
+/*
+ * If <all> type component referenced is used
+ * more than one component will be tested
+ */
+#define IS_TERMINAL_COMPREF(cr) (cr->cr_curr->ci_next == NULL)
+int
+comp_test_all_components (
+	void* attr_mem_op,
+	void* assert_mem_op,
+	ComponentSyntaxInfo *csi_attr,
+	ComponentAssertion* ca )
+{
+	int rc;
+	ComponentSyntaxInfo *csi_temp = NULL, *csi_assert = NULL, *comp_elmt = NULL;
+	ComponentReference *cr = ca->ca_comp_ref;
+	struct berval *ca_val = &ca->ca_ma_value;
+
+	switch ( cr->cr_curr->ci_type ) {
+	    case LDAP_COMPREF_ALL:
+		if ( IS_TERMINAL_COMPREF(cr) ) {
+			FOR_EACH_LIST_ELMT( comp_elmt, &((ComponentList*)csi_attr)->comp_list )
+			{
+				rc = comp_test_one_component( attr_mem_op, assert_mem_op, comp_elmt, ca );
+				if ( rc == LDAP_COMPARE_TRUE ) {
+					break;
+				}
+			}
+		} else {
+			ComponentId *start_compid = ca->ca_comp_ref->cr_curr->ci_next;
+			FOR_EACH_LIST_ELMT( comp_elmt, &((ComponentList*)csi_attr)->comp_list )
+			{
+				cr->cr_curr = start_compid;
+				rc = comp_test_components ( attr_mem_op, assert_mem_op, comp_elmt, ca );
+				if ( rc != LDAP_COMPARE_FALSE ) {
+					break;
+				}
+#if 0				
+				if ( rc == LDAP_COMPARE_TRUE ) {
+					break;
+				}
+#endif
+			}
+		}
+		break;
+	    case LDAP_COMPREF_CONTENT:
+	    case LDAP_COMPREF_SELECT:
+	    case LDAP_COMPREF_DEFINED:
+	    case LDAP_COMPREF_UNDEFINED:
+	    case LDAP_COMPREF_IDENTIFIER:
+	    case LDAP_COMPREF_FROM_BEGINNING:
+	    case LDAP_COMPREF_FROM_END:
+	    case LDAP_COMPREF_COUNT:
+		rc = LDAP_OPERATIONS_ERROR;
+		break;
+	    default:
+		rc = LDAP_OPERATIONS_ERROR;
+	}
+	return rc;
+}
+
+void
+eat_bv_whsp ( struct berval* in )
+{
+	char* end = in->bv_val + in->bv_len;
+        for ( ; ( *in->bv_val == ' ' ) && ( in->bv_val < end ) ; ) {
+                in->bv_val++;
+        }
+}
+
+/*
+ * Perform matching one referenced component against assertion
+ * If the matching rule in a component filter is allComponentsMatch
+ * or its derivatives the extracted component's ASN.1 specification
+ * is applied to the assertion value as its syntax
+ * Otherwise, the matching rule's syntax is applied to the assertion value
+ * By RFC 3687
+ */
+int
+comp_test_one_component (
+	void* attr_mem_op,
+	void* assert_mem_op,
+	ComponentSyntaxInfo *csi_attr,
+	ComponentAssertion *ca )
+{
+	int len, rc;
+	ComponentSyntaxInfo *csi_assert = NULL;
+	char* oid = NULL;
+	MatchingRule* mr = ca->ca_ma_rule;
+
+	if ( mr->smr_usage & SLAP_MR_COMPONENT ) {
+		/* If allComponentsMatch or its derivatives */
+		if ( !ca->ca_comp_data.cd_tree ) {
+			comp_convert_assert_to_comp( assert_mem_op, csi_attr, &ca->ca_ma_value, &csi_assert, &len, DEC_ALLOC_MODE_0 );
+			ca->ca_comp_data.cd_tree = (void*)csi_assert;
+		} else {
+			csi_assert = ca->ca_comp_data.cd_tree;
+		}
+
+		if ( !csi_assert )
+			return LDAP_PROTOCOL_ERROR;
+
+		if ( strcmp( mr->smr_mrule.mr_oid, OID_ALL_COMP_MATCH ) != 0 )
+                {
+                        /* allComponentMatch's derivatives */
+			oid =  mr->smr_mrule.mr_oid;
+                }
+                        return csi_attr->csi_comp_desc->cd_all_match(
+                               			 oid, csi_attr, csi_assert );
+
+	} else {
+		/* LDAP existing matching rules */
+		struct berval attr_bv = BER_BVNULL;
+		struct berval n_attr_bv = BER_BVNULL;
+		struct berval* assert_bv = &ca->ca_ma_value;
+		int allocated = 0;
+		/*Attribute is converted to compatible LDAP encodings*/
+		if ( comp_convert_asn_to_ldap( mr, csi_attr, &attr_bv, &allocated ) != LDAP_SUCCESS )
+			return LDAP_INAPPROPRIATE_MATCHING;
+		/* extracted component value is not normalized */
+		if ( ca->ca_ma_rule->smr_normalize ) {
+			rc = ca->ca_ma_rule->smr_normalize (
+				SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
+				NULL, ca->ca_ma_rule,
+				&attr_bv, &n_attr_bv, NULL );
+			if ( rc != LDAP_SUCCESS )
+				return rc;
+			if ( allocated && attr_bv.bv_val )
+				free (attr_bv.bv_val);
+		} else {
+			n_attr_bv = attr_bv;
+		}
+#if 0
+		/*Assertion value is validated by MR's syntax*/
+		if ( !ca->ca_comp_data.cd_tree ) {
+			ca->ca_comp_data.cd_tree = assert_bv;
+		}
+		else {
+			assert_bv = ca->ca_comp_data.cd_tree;
+		}
+#endif
+		if ( !n_attr_bv.bv_val )
+			return LDAP_COMPARE_FALSE;
+		rc = csi_value_match( mr, &n_attr_bv, assert_bv );
+		if ( n_attr_bv.bv_val )
+			free ( n_attr_bv.bv_val );
+		return rc;
+	}
+}
+
+int
+comp_test_components( void* attr_nm, void* assert_nm, ComponentSyntaxInfo* csi_attr, ComponentAssertion* ca) {
+	char* peek_head;
+	int mode, bytesDecoded = 0, rc;
+	GenBuf* b;
+	ExpBuf* buf;
+	OidDecoderMapping* odm;
+	struct berval bv;
+	char oid[MAX_OID_LEN];
+	void* contained_comp, *anytype_comp;
+	ComponentReference* cr = ca->ca_comp_ref;
+
+	if ( !cr )
+		return comp_test_one_component ( attr_nm, assert_nm, csi_attr, ca );
+	/* Extracting the component referenced by ca->ca_comp_ref */
+	csi_attr = (ComponentSyntaxInfo*)csi_attr->csi_comp_desc->cd_extract_i( attr_nm, cr, csi_attr );
+	if ( !csi_attr ) return LDAP_INVALID_SYNTAX;
+	/* perform matching, considering the type of a Component Reference(CR)*/
+	switch( cr->cr_curr->ci_type ) {
+	   case LDAP_COMPREF_IDENTIFIER:
+	   case LDAP_COMPREF_FROM_BEGINNING:
+	   case LDAP_COMPREF_FROM_END:
+	   case LDAP_COMPREF_COUNT:
+		/*
+		 * Exactly one component is referenced
+		 * Fast Path for matching for this case
+		 */
+		rc = comp_test_one_component ( attr_nm, assert_nm, csi_attr, ca );
+		break;
+	   case LDAP_COMPREF_ALL:
+		/*
+		 * If <all> type CR is used
+		 * more than one component will be tested
+		 */
+		rc = comp_test_all_components ( attr_nm, assert_nm, csi_attr, ca );
+		break;
+
+	   case LDAP_COMPREF_CONTENT:
+		/*
+		 * <content> type CR is used
+		 * check if it is followed by <select> type CR.
+		 * 1) If so, look up the corresponding decoder  in the mapping
+		 * table(OID to decoder) by <select>
+		 * and then decode the OCTET/BIT STRING with the decoder
+		 * Finally, extract the target component with the remaining CR.
+		 * 2) If not, just return the current component, It SHOULD not be
+		 * extracted further, because the component MUST be BIT/OCTET
+                 * string.
+                 */
+
+		cr->cr_curr = cr->cr_curr->ci_next;
+		if ( !cr->cr_curr ) {
+			/* case 2) in above description */
+			rc = comp_test_one_component ( attr_nm, assert_nm, csi_attr, ca );
+			break;
+		}
+
+		if ( cr->cr_curr->ci_type == LDAP_COMPREF_SELECT ) {
+			/* Look up OID mapping table */	
+			odm = RetrieveOidDecoderMappingbyBV( &cr->cr_curr->ci_val.ci_select_value );
+			
+			if ( !odm || !odm->BER_Decode )
+				return  LDAP_PROTOCOL_ERROR;
+
+			/* current component MUST be either BIT or OCTET STRING */
+			if ( csi_attr->csi_comp_desc->cd_type_id != BASICTYPE_BITSTRING ) {
+				bv.bv_val = ((ComponentBits*)csi_attr)->value.bits;
+				bv.bv_len = ((ComponentBits*)csi_attr)->value.bitLen;
+			}
+			else if ( csi_attr->csi_comp_desc->cd_type_id != BASICTYPE_BITSTRING ) {
+				bv.bv_val = ((ComponentOcts*)csi_attr)->value.octs;
+				bv.bv_len = ((ComponentOcts*)csi_attr)->value.octetLen;
+			}
+			else
+				return LDAP_PROTOCOL_ERROR;
+
+			buf = ExpBufAllocBuf();
+			ExpBuftoGenBuf( buf, &b );
+			ExpBufInstallDataInBuf ( buf, bv.bv_val, bv.bv_len );
+			BufResetInReadMode( b );
+			mode = DEC_ALLOC_MODE_2;
+
+			/* Try to decode with BER/DER decoder */
+			rc = odm->BER_Decode ( attr_nm, b, (ComponentSyntaxInfo*)&contained_comp, &bytesDecoded, mode );
+
+			ExpBufFreeBuf( buf );
+			GenBufFreeBuf( b );
+
+			if ( rc != LDAP_SUCCESS ) return LDAP_PROTOCOL_ERROR;
+
+			/* xxx.content.(x.xy.xyz).rfc822Name */
+			/* In the aboe Ex. move CR to the right to (x.xy.xyz)*/
+			cr->cr_curr = cr->cr_curr->ci_next;
+			if (!cr->cr_curr )
+				rc = comp_test_one_component ( attr_nm, assert_nm, csi_attr, ca );
+			else
+				rc = comp_test_components( attr_nm, assert_nm, contained_comp, ca );
+		}
+		else {
+			/* Invalid Component reference */
+			rc = LDAP_PROTOCOL_ERROR;
+		}
+		break;
+	   case LDAP_COMPREF_SELECT:
+		if (csi_attr->csi_comp_desc->cd_type_id != BASICTYPE_ANY )
+			return LDAP_INVALID_SYNTAX;
+		rc = CheckSelectTypeCorrect( attr_nm, ((ComponentAny*)csi_attr)->cai, &cr->cr_curr->ci_val.ci_select_value );
+		if ( rc < 0 ) return LDAP_INVALID_SYNTAX;
+
+		/* point to the real component, not any type component */
+		csi_attr = ((ComponentAny*)csi_attr)->value;
+		cr->cr_curr = cr->cr_curr->ci_next;
+		if ( cr->cr_curr )
+			rc =  comp_test_components( attr_nm, assert_nm, csi_attr, ca);
+		else
+			rc =  comp_test_one_component( attr_nm, assert_nm, csi_attr, ca);
+		break;
+	   default:
+		rc = LDAP_INVALID_SYNTAX;
+	}
+	return rc;
+}
+
+
+void*
+comp_nibble_memory_allocator ( int init_mem, int inc_mem ) {
+	void* nm;
+	nm = (void*)InitNibbleMemLocal( (unsigned long)init_mem, (unsigned long)inc_mem );
+	if ( !nm ) return NULL;
+	else return (void*)nm;
+}
+
+void
+comp_nibble_memory_free ( void* nm ) {
+	ShutdownNibbleMemLocal( nm );
+}
+
+void*
+comp_get_component_description ( int id ) {
+	if ( asntype_to_compdesc_mapping_tbl[id].atcd_typeId == id )
+		return &asntype_to_compdesc_mapping_tbl[id].atcd_cd;
+	else
+		return NULL;
+}
+
+int
+comp_component_encoder ( void* mem_op, ComponentSyntaxInfo* csi , struct berval* nval ) {
+        int size, rc;
+        GenBuf* b;
+        ExpBuf* buf;
+	struct berval bv;
+	
+	buf = ExpBufAllocBufAndData();
+	ExpBufResetInWriteRvsMode(buf);
+	ExpBuftoGenBuf( buf, &b );
+
+	if ( !csi->csi_comp_desc->cd_gser_encoder && !csi->csi_comp_desc->cd_ldap_encoder )
+		return (-1);
+
+	/*
+	 * if an LDAP specific encoder is provided :
+	 * dn and rdn have their LDAP specific encoder
+	 */
+	if ( csi->csi_comp_desc->cd_ldap_encoder ) {
+		rc = csi->csi_comp_desc->cd_ldap_encoder( csi, &bv );
+		if ( rc != LDAP_SUCCESS )
+			return rc;
+		if ( mem_op )
+			nval->bv_val = CompAlloc( mem_op, bv.bv_len );
+		else
+			nval->bv_val = malloc( size );
+		memcpy( nval->bv_val, bv.bv_val, bv.bv_len );
+		nval->bv_len = bv.bv_len;
+		/*
+		 * This free will be eliminated by making ldap_encoder
+		 * use nibble memory in it 
+		 */
+		free ( bv.bv_val );
+		GenBufFreeBuf( b );
+		BufFreeBuf( buf );
+		return LDAP_SUCCESS;
+	}
+
+	rc = csi->csi_comp_desc->cd_gser_encoder( b, csi );
+	if ( rc < 0 ) {
+		GenBufFreeBuf( b );
+		BufFreeBuf( buf );
+		return rc;
+	}
+
+	size = ExpBufDataSize( buf );
+	if ( size > 0 ) {
+		if ( mem_op )
+			nval->bv_val = CompAlloc ( mem_op, size );
+		else
+			nval->bv_val = malloc( size );
+		nval->bv_len = size;
+		BufResetInReadMode(b);
+		BufCopy( nval->bv_val, b, size );
+	}
+	ExpBufFreeBuf( buf );
+	GenBufFreeBuf( b );
+
+	return LDAP_SUCCESS;
+}
+
+#if SLAPD_COMP_MATCH == SLAPD_MOD_DYNAMIC
+
+#include "certificate.h"
+
+extern convert_attr_to_comp_func* attr_converter;
+extern convert_assert_to_comp_func* assert_converter;
+extern convert_asn_to_ldap_func* csi_converter;
+extern free_component_func* component_destructor;
+extern test_component_func* test_components;
+extern alloc_nibble_func* nibble_mem_allocator;
+extern free_nibble_func* nibble_mem_free;
+extern test_membership_func* is_aliased_attribute;
+extern get_component_info_func* get_component_description;
+extern component_encoder_func* component_encoder;
+
+
+int init_module(int argc, char *argv[]) {
+	/*
+	 * Initialize function pointers in slapd
+	 */
+	attr_converter = (convert_attr_to_comp_func*)comp_convert_attr_to_comp;
+	assert_converter = (convert_assert_to_comp_func*)comp_convert_assert_to_comp;
+	component_destructor = (free_component_func*)comp_free_component;
+	test_components = (test_component_func*)comp_test_components;
+	nibble_mem_allocator = (free_nibble_func*)comp_nibble_memory_allocator;
+	nibble_mem_free = (free_nibble_func*)comp_nibble_memory_free;
+	is_aliased_attribute = (test_membership_func*)comp_is_aliased_attribute;
+	get_component_description = (get_component_info_func*)comp_get_component_description;
+	component_encoder = (component_encoder_func*)comp_component_encoder;
+
+	/* file path needs to be */
+	load_derived_matching_rule ("derived_mr.cfg");
+
+	/* the initialization for example X.509 certificate */
+	init_module_AuthenticationFramework();
+	init_module_AuthorityKeyIdentifierDefinition();
+	init_module_CertificateRevokationList();
+	init_attribute_aliasing_table ();
+	init_component_description_table ();
+	return 0;
+}
+
+#endif /* SLAPD_PASSWD */
diff --git a/contrib/slapd-modules/datamorph/Makefile b/contrib/slapd-modules/datamorph/Makefile
new file mode 100644
index 0000000..82bce49
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/Makefile
@@ -0,0 +1,77 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2017 Ondřej Kuzník, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+SRCDIR = ./
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_DATAMORPH=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = datamorph.la
+MANPAGES = slapo-datamorph.5
+CLEAN = *.o *.lo *.la .libs
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+all: $(PROGRAMS)
+
+d :=
+sp :=
+dir := tests
+include $(dir)/Rules.mk
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+datamorph.la: datamorph.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+		-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf $(CLEAN)
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/datamorph/datamorph.c b/contrib/slapd-modules/datamorph/datamorph.c
new file mode 100644
index 0000000..7767586
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/datamorph.c
@@ -0,0 +1,2091 @@
+/* datamorph.c - enumerated and native integer value support */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2016-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was developed in 2016 by Ondřej Kuzník for Symas Corp.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_DATAMORPH
+
+#include <inttypes.h>
+#include <ac/stdlib.h>
+
+#if defined(__linux__)
+#include <endian.h>
+
+#elif defined(sun)
+
+#define be16toh(x) BE_16(x)
+#define le16toh(x) LE_16(x)
+#define htobe16(x) BE_16(x)
+#define htole16(x) LE_16(x)
+
+#define be32toh(x) BE_32(x)
+#define le32toh(x) LE_32(x)
+#define htobe32(x) BE_32(x)
+#define htole32(x) LE_32(x)
+
+#define be64toh(x) BE_64(x)
+#define le64toh(x) LE_64(x)
+#define htobe64(x) BE_64(x)
+#define htole64(x) LE_64(x)
+
+#elif defined(__NetBSD__) || defined(__FreeBSD__)
+#include <sys/endian.h>
+
+#elif defined(__OpenBSD__)
+#include <sys/endian.h>
+
+#define be16toh(x) betoh16(x)
+#define le16toh(x) letoh16(x)
+
+#define be32toh(x) betoh32(x)
+#define le32toh(x) letoh32(x)
+
+#define be64toh(x) betoh64(x)
+#define le64toh(x) letoh64(x)
+
+#elif defined(__BYTE_ORDER__) && \
+		( defined(__GNUC__) || defined(__clang__) )
+
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define be16toh(x) __builtin_bswap16(x)
+#define le16toh(x) (x)
+#define htobe16(x) __builtin_bswap16(x)
+#define htole16(x) (x)
+
+#define be32toh(x) __builtin_bswap32(x)
+#define le32toh(x) (x)
+#define htobe32(x) __builtin_bswap32(x)
+#define htole32(x) (x)
+
+#define be64toh(x) __builtin_bswap64(x)
+#define le64toh(x) (x)
+#define htobe64(x) __builtin_bswap64(x)
+#define htole64(x) (x)
+
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define be16toh(x) (x)
+#define le16toh(x) __builtin_bswap16(x)
+#define htobe16(x) (x)
+#define htole16(x) __builtin_bswap16(x)
+
+#define be32toh(x) (x)
+#define le32toh(x) __builtin_bswap32(x)
+#define htobe32(x) (x)
+#define htole32(x) __builtin_bswap32(x)
+
+#define be64toh(x) (x)
+#define le64toh(x) __builtin_bswap64(x)
+#define htobe64(x) (x)
+#define htole64(x) __builtin_bswap64(x)
+
+#else
+#error "Only support pure big and little endian at the moment"
+#endif
+
+#else
+#error "I lack the way to check my endianness and convert to/from big-endian"
+#endif
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+#include "ldap_queue.h"
+
+typedef enum datamorph_type_t {
+	DATAMORPH_UNSET,
+	DATAMORPH_ENUM,
+	DATAMORPH_INT,
+} datamorph_type;
+
+typedef enum datamorph_flags_t {
+	DATAMORPH_FLAG_SIGNED = 1 << 0,
+	DATAMORPH_FLAG_LOWER = 1 << 1,
+	DATAMORPH_FLAG_UPPER = 1 << 2,
+} datamorph_flags;
+
+typedef union datamorph_interval_bound_t {
+	int64_t i;
+	uint64_t u;
+} datamorph_interval_bound;
+
+typedef struct transformation_info_t {
+	AttributeDescription *attr;
+	datamorph_type type;
+	union {
+		struct {
+			Avlnode *to_db;
+			struct berval from_db[256];
+		} maps;
+#define ti_enum info.maps
+		struct {
+			datamorph_flags flags;
+			unsigned int size;
+			datamorph_interval_bound lower, upper;
+		} interval;
+#define ti_int info.interval
+	} info;
+} transformation_info;
+
+typedef struct datamorph_enum_mapping_t {
+	struct berval wire_value;
+	uint8_t db_value;
+	transformation_info *transformation;
+} datamorph_enum_mapping;
+
+typedef struct datamorph_info_t {
+	Avlnode *transformations;
+	transformation_info *wip_transformation;
+} datamorph_info;
+
+static int
+transformation_mapping_cmp( const void *l, const void *r )
+{
+	const datamorph_enum_mapping *left = l, *right = r;
+
+	return ber_bvcmp( &left->wire_value, &right->wire_value );
+}
+
+static int
+transformation_info_cmp( const void *l, const void *r )
+{
+	const transformation_info *left = l, *right = r;
+
+	return ( left->attr == right->attr ) ? 0 :
+			( left->attr < right->attr ) ? -1 :
+											1;
+}
+
+static int
+transform_to_db_format_one(
+		Operation *op,
+		transformation_info *definition,
+		struct berval *value,
+		struct berval *outval )
+{
+	switch ( definition->type ) {
+		case DATAMORPH_ENUM: {
+			datamorph_enum_mapping *mapping, needle = { .wire_value = *value };
+			struct berval db_value = { .bv_len = 1 };
+
+			mapping = ldap_avl_find( definition->ti_enum.to_db, &needle,
+					transformation_mapping_cmp );
+			if ( !mapping ) {
+				Debug( LDAP_DEBUG_ANY, "transform_to_db_format_one: "
+						"value '%s' not mapped\n",
+						value->bv_val );
+				return LDAP_CONSTRAINT_VIOLATION;
+			}
+
+			db_value.bv_val = (char *)&mapping->db_value;
+			ber_dupbv( outval, &db_value );
+			assert( outval->bv_val );
+			break;
+		}
+
+		case DATAMORPH_INT: {
+			union {
+				char s[8];
+				uint8_t be8;
+				uint16_t be16;
+				uint32_t be32;
+				uint64_t be64;
+			} buf;
+			struct berval db_value = { .bv_val = buf.s };
+			char *ptr = value->bv_val + value->bv_len;
+			uint64_t unsigned_value;
+			int64_t signed_value;
+
+			assert( definition->ti_int.size == 1 ||
+					definition->ti_int.size == 2 ||
+					definition->ti_int.size == 4 ||
+					definition->ti_int.size == 8 );
+
+			/* Read number */
+			if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+				signed_value = strtoll( value->bv_val, &ptr, 10 );
+			} else {
+				unsigned_value = strtoull( value->bv_val, &ptr, 10 );
+			}
+			if ( *value->bv_val == '\0' || *ptr != '\0' ) {
+				Debug( LDAP_DEBUG_ANY, "transform_to_db_format_one: "
+						"value '%s' not an integer\n",
+						value->bv_val );
+				return LDAP_CONSTRAINT_VIOLATION;
+			}
+			/* Check it's within configured bounds */
+			if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+				if ( signed_value < definition->ti_int.lower.i ||
+						signed_value > definition->ti_int.upper.i ) {
+					Debug( LDAP_DEBUG_ANY, "transform_to_db_format_one: "
+							"value '%s' doesn't fit configured constraints\n",
+							value->bv_val );
+					return LDAP_CONSTRAINT_VIOLATION;
+				}
+			} else {
+				if ( unsigned_value < definition->ti_int.lower.u ||
+						unsigned_value > definition->ti_int.upper.u ) {
+					Debug( LDAP_DEBUG_ANY, "transform_to_db_format_one: "
+							"value '%s' doesn't fit configured constraints\n",
+							value->bv_val );
+					return LDAP_CONSTRAINT_VIOLATION;
+				}
+			}
+
+			db_value.bv_len = definition->ti_int.size;
+			switch ( definition->ti_int.size ) {
+				case 1: {
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						buf.be8 = (unsigned char)((char)signed_value);
+					} else {
+						buf.be8 = unsigned_value;
+					}
+					break;
+				}
+				case 2: {
+					uint16_t h16;
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						h16 = signed_value;
+					} else {
+						h16 = unsigned_value;
+					}
+					buf.be16 = htobe16( h16 );
+					break;
+				}
+				case 4: {
+					uint32_t h32;
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						h32 = signed_value;
+					} else {
+						h32 = unsigned_value;
+					}
+					buf.be32 = htobe32( h32 );
+					break;
+				}
+				case 8: {
+					uint64_t h64;
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						h64 = signed_value;
+					} else {
+						h64 = unsigned_value;
+					}
+					buf.be64 = htobe64( h64 );
+					break;
+				}
+			}
+			ber_dupbv( outval, &db_value );
+			assert( outval->bv_val );
+			break;
+		}
+
+		default:
+			assert(0);
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+transform_to_db_format(
+		Operation *op,
+		transformation_info *definition,
+		BerVarray values,
+		int numvals,
+		BerVarray *out )
+{
+	struct berval *value;
+	int i, rc = LDAP_SUCCESS;
+
+	if ( numvals == 0 ) {
+		for ( value = values; value; value++, numvals++ )
+			; /* Count them */
+	}
+
+	assert( out );
+	*out = ch_calloc( numvals + 1, sizeof(struct berval) );
+
+	for ( i = 0; i < numvals; i++ ) {
+		rc = transform_to_db_format_one(
+				op, definition, &values[i], &(*out)[i] );
+		if ( rc ) {
+			break;
+		}
+	}
+
+	if ( rc ) {
+		for ( ; i >= 0; i-- ) {
+			ch_free((*out)[i].bv_val);
+		}
+		ch_free(*out);
+	}
+
+	return rc;
+}
+
+static int
+transform_from_db_format_one(
+		Operation *op,
+		transformation_info *definition,
+		struct berval *value,
+		struct berval *outval )
+{
+	switch ( definition->type ) {
+		case DATAMORPH_ENUM: {
+			uint8_t index = value->bv_val[0];
+			struct berval *val = &definition->info.maps.from_db[index];
+
+			if ( !BER_BVISNULL( val ) ) {
+				ber_dupbv( outval, val );
+				assert( outval->bv_val );
+			} else {
+				Debug( LDAP_DEBUG_ANY, "transform_from_db_format_one: "
+						"DB value %d has no mapping!\n",
+						index );
+				/* FIXME: probably still need to return an error */
+				BER_BVZERO( outval );
+			}
+			break;
+		}
+
+		case DATAMORPH_INT: {
+			char buf[24];
+			struct berval wire_value = { .bv_val = buf };
+			union lens_t {
+				uint8_t be8;
+				uint16_t be16;
+				uint32_t be32;
+				uint64_t be64;
+			} *lens = (union lens_t *)value->bv_val;
+			uint64_t unsigned_value;
+			int64_t signed_value;
+
+			if ( value->bv_len != definition->ti_int.size ) {
+				Debug( LDAP_DEBUG_ANY, "transform_from_db_format_one(%s): "
+						"unexpected DB value of length %lu when configured "
+						"for %u!\n",
+						definition->attr->ad_cname.bv_val, value->bv_len,
+						definition->ti_int.size );
+				/* FIXME: probably still need to return an error */
+				BER_BVZERO( outval );
+				break;
+			}
+
+			assert( definition->ti_int.size == 1 ||
+					definition->ti_int.size == 2 ||
+					definition->ti_int.size == 4 ||
+					definition->ti_int.size == 8 );
+
+			switch ( definition->ti_int.size ) {
+				case 1: {
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						signed_value = (int8_t)lens->be8;
+					} else {
+						unsigned_value = (uint8_t)lens->be8;
+					}
+					break;
+				}
+				case 2: {
+					uint16_t h16 = be16toh( lens->be16 );
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						signed_value = (int16_t)h16;
+					} else {
+						unsigned_value = (uint16_t)h16;
+					}
+					break;
+				}
+				case 4: {
+					uint32_t h32 = be32toh( lens->be32 );
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						signed_value = (int32_t)h32;
+					} else {
+						unsigned_value = (uint32_t)h32;
+					}
+					break;
+				}
+				case 8: {
+					uint64_t h64 = be64toh( lens->be64 );
+					if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+						signed_value = (int64_t)h64;
+					} else {
+						unsigned_value = (uint64_t)h64;
+					}
+					break;
+				}
+			}
+			if ( definition->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+				wire_value.bv_len = sprintf( buf, "%" PRId64, signed_value );
+			} else {
+				wire_value.bv_len = sprintf( buf, "%" PRIu64, unsigned_value );
+			}
+			ber_dupbv( outval, &wire_value );
+			assert( outval->bv_val );
+			break;
+		}
+
+		default:
+			assert(0);
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+transform_from_db_format(
+		Operation *op,
+		transformation_info *definition,
+		BerVarray values,
+		int numvals,
+		BerVarray *out )
+{
+	struct berval *value;
+	int i, rc = LDAP_SUCCESS;
+
+	if ( numvals == 0 ) {
+		for ( value = values; value; value++, numvals++ )
+			; /* Count them */
+	}
+
+	assert( out );
+	*out = ch_calloc( numvals + 1, sizeof(struct berval) );
+
+	for ( i = 0; i < numvals; i++ ) {
+		struct berval bv;
+		rc = transform_from_db_format_one( op, definition, &values[i], &bv );
+		if ( !BER_BVISNULL( &bv ) ) {
+			ber_bvarray_add( out, &bv );
+		}
+		if ( rc ) {
+			break;
+		}
+	}
+
+	if ( rc ) {
+		for ( ; i >= 0; i-- ) {
+			ch_free( (*out)[i].bv_val );
+		}
+		ch_free( *out );
+	}
+
+	return rc;
+}
+
+static int
+datamorph_filter( Operation *op, datamorph_info *ov, Filter *f )
+{
+	switch ( f->f_choice ) {
+		case LDAP_FILTER_PRESENT:
+		/* The matching rules are not in place,
+		 * so the filter will be ignored */
+		case LDAP_FILTER_APPROX:
+		case LDAP_FILTER_SUBSTRINGS:
+		default:
+			break;
+			return LDAP_SUCCESS;
+
+		case LDAP_FILTER_AND:
+		case LDAP_FILTER_OR: {
+			for ( f = f->f_and; f; f = f->f_next ) {
+				int rc = datamorph_filter( op, ov, f );
+				if ( rc != LDAP_SUCCESS ) {
+					return rc;
+				}
+			}
+		} break;
+
+		case LDAP_FILTER_NOT:
+			return datamorph_filter( op, ov, f->f_not );
+
+		case LDAP_FILTER_EQUALITY:
+		case LDAP_FILTER_GE:
+		case LDAP_FILTER_LE: {
+			transformation_info *t, needle = { .attr = f->f_ava->aa_desc };
+
+			t = ldap_avl_find(
+					ov->transformations, &needle, transformation_info_cmp );
+			if ( t ) {
+				struct berval new_val;
+				int rc = transform_to_db_format_one(
+						op, t, &f->f_ava->aa_value, &new_val );
+				ch_free( f->f_ava->aa_value.bv_val );
+
+				if ( rc != LDAP_SUCCESS ) {
+					f->f_choice = SLAPD_FILTER_COMPUTED;
+					f->f_result = SLAPD_COMPARE_UNDEFINED;
+				} else {
+					f->f_ava->aa_value = new_val;
+				}
+			}
+		} break;
+	}
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_op_add( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	Entry *e = op->ora_e;
+	Attribute *a, *next;
+	AttributeDescription *stop = NULL;
+	int rc = LDAP_SUCCESS;
+
+	if ( !BER_BVISNULL( &e->e_nname ) && !BER_BVISEMPTY( &e->e_nname ) ) {
+		LDAPRDN rDN;
+		const char *p;
+		int i;
+
+		rc = ldap_bv2rdn_x( &e->e_nname, &rDN, (char **)&p, LDAP_DN_FORMAT_LDAP,
+				op->o_tmpmemctx );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY, "datamorph_op_add: "
+					"can't parse rdn: dn=%s\n",
+					op->o_req_ndn.bv_val );
+			return SLAP_CB_CONTINUE;
+		}
+
+		for ( i = 0; rDN[i]; i++ ) {
+			transformation_info needle = {};
+
+			/* If we can't resolve the attribute, ignore it */
+			if ( slap_bv2ad( &rDN[i]->la_attr, &needle.attr, &p ) ) {
+				continue;
+			}
+
+			if ( ldap_avl_find( ov->transformations, &needle,
+						 transformation_info_cmp ) ) {
+				rc = LDAP_CONSTRAINT_VIOLATION;
+				Debug( LDAP_DEBUG_TRACE, "datamorph_op_add: "
+						"attempted to add transformed attribute in RDN\n" );
+				break;
+			}
+		}
+
+		ldap_rdnfree_x( rDN, op->o_tmpmemctx );
+		if ( rc != LDAP_SUCCESS ) {
+			send_ldap_error( op, rs, rc,
+					"datamorph: trying to add transformed attribute in RDN" );
+			return rc;
+		}
+	}
+
+	for ( a = e->e_attrs; a && a->a_desc != stop; a = next ) {
+		transformation_info *t, needle = { .attr = a->a_desc };
+		BerVarray new_vals;
+
+		next = a->a_next;
+
+		t = ldap_avl_find( ov->transformations, &needle, transformation_info_cmp );
+		if ( !t ) continue;
+
+		rc = transform_to_db_format(
+				op, t, a->a_vals, a->a_numvals, &new_vals );
+		if ( rc != LDAP_SUCCESS ) {
+			goto fail;
+		}
+
+		(void)attr_delete( &e->e_attrs, needle.attr );
+
+		rc = attr_merge( e, needle.attr, new_vals, NULL );
+		ber_bvarray_free( new_vals );
+		if ( rc != LDAP_SUCCESS ) {
+			goto fail;
+		}
+		if ( !stop ) {
+			stop = needle.attr;
+		}
+	}
+
+	return SLAP_CB_CONTINUE;
+
+fail:
+	send_ldap_error(
+			op, rs, rc, "datamorph: trying to add values outside definitions" );
+	return rc;
+}
+
+static int
+datamorph_op_compare( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	transformation_info *t, needle = { .attr = op->orc_ava->aa_desc };
+	int rc = SLAP_CB_CONTINUE;
+
+	t = ldap_avl_find( ov->transformations, &needle, transformation_info_cmp );
+	if ( t ) {
+		struct berval new_val;
+
+		rc = transform_to_db_format_one(
+				op, t, &op->orc_ava->aa_value, &new_val );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE, "datamorph_op_compare: "
+					"transformation failed for '%s', rc=%d\n",
+					op->orc_ava->aa_value.bv_val, rc );
+			rs->sr_err = rc = LDAP_COMPARE_FALSE;
+			send_ldap_result( op, rs );
+			return rc;
+		}
+		ch_free( op->orc_ava->aa_value.bv_val );
+		op->orc_ava->aa_value = new_val;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+datamorph_op_mod( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	Modifications *mod;
+	int rc = SLAP_CB_CONTINUE;
+
+	for ( mod = op->orm_modlist; mod; mod = mod->sml_next ) {
+		transformation_info *t, needle = { .attr = mod->sml_desc };
+		BerVarray new_vals = NULL;
+
+		if ( mod->sml_numvals == 0 ) continue; /* Nothing to transform */
+
+		t = ldap_avl_find( ov->transformations, &needle, transformation_info_cmp );
+		if ( !t ) continue;
+
+		assert( !mod->sml_nvalues );
+		rc = transform_to_db_format(
+				op, t, mod->sml_values, mod->sml_numvals, &new_vals );
+		if ( rc != LDAP_SUCCESS ) {
+			goto fail;
+		}
+		ber_bvarray_free( mod->sml_values );
+		mod->sml_values = new_vals;
+	}
+
+	return SLAP_CB_CONTINUE;
+
+fail:
+	Debug( LDAP_DEBUG_TRACE, "datamorph_op_mod: "
+			"dn=%s failed rc=%d\n",
+			op->o_req_ndn.bv_val, rc );
+	send_ldap_error( op, rs, rc,
+			"datamorph: trying to operate on values outside definitions" );
+	return rc;
+}
+
+static int
+datamorph_op_modrdn( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	LDAPRDN rDN;
+	const char *p;
+	int i, rc;
+
+	rc = ldap_bv2rdn_x( &op->orr_nnewrdn, &rDN, (char **)&p,
+			LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "datamorph_op_modrdn: "
+				"can't parse rdn for dn=%s\n",
+				op->o_req_ndn.bv_val );
+		return SLAP_CB_CONTINUE;
+	}
+
+	for ( i = 0; rDN[i]; i++ ) {
+		transformation_info needle = {};
+
+		/* If we can't resolve the attribute, ignore it */
+		if ( slap_bv2ad( &rDN[i]->la_attr, &needle.attr, &p ) ) {
+			continue;
+		}
+
+		if ( ldap_avl_find(
+					 ov->transformations, &needle, transformation_info_cmp ) ) {
+			rc = LDAP_CONSTRAINT_VIOLATION;
+			Debug( LDAP_DEBUG_TRACE, "datamorph_op_modrdn: "
+					"attempted to add transformed values in RDN\n" );
+			break;
+		}
+	}
+
+	ldap_rdnfree_x( rDN, op->o_tmpmemctx );
+	if ( rc != LDAP_SUCCESS ) {
+		send_ldap_error( op, rs, rc,
+				"datamorph: trying to put transformed values in RDN" );
+		return rc;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+datamorph_response( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	Entry *e = NULL, *e_orig = rs->sr_entry;
+	AttributeDescription *stop = NULL;
+	Attribute *a, *next = NULL;
+	int rc = SLAP_CB_CONTINUE;
+
+	if ( rs->sr_type != REP_SEARCH ) {
+		return rc;
+	}
+
+	for ( a = e_orig->e_attrs; a && a->a_desc != stop; a = next ) {
+		transformation_info *t, needle = { .attr = a->a_desc };
+		BerVarray new_vals;
+
+		next = a->a_next;
+
+		t = ldap_avl_find( ov->transformations, &needle, transformation_info_cmp );
+		if ( !t ) continue;
+
+		rc = transform_from_db_format(
+				op, t, a->a_vals, a->a_numvals, &new_vals );
+		if ( rc != LDAP_SUCCESS ) {
+			break;
+		}
+		if ( !e ) {
+			if ( rs->sr_flags & REP_ENTRY_MODIFIABLE ) {
+				e = e_orig;
+			} else {
+				e = entry_dup( e_orig );
+			}
+		}
+
+		(void)attr_delete( &e->e_attrs, needle.attr );
+
+		rc = attr_merge( e, needle.attr, new_vals, NULL );
+		ber_bvarray_free( new_vals );
+		if ( rc != LDAP_SUCCESS ) {
+			break;
+		}
+		if ( !stop ) {
+			stop = needle.attr;
+		}
+	}
+
+	if ( rc == LDAP_SUCCESS ) {
+		rc = SLAP_CB_CONTINUE;
+		if ( e && e != e_orig ) {
+			rs_replace_entry( op, rs, on, e );
+			rs->sr_flags &= ~REP_ENTRY_MASK;
+			rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
+		}
+	} else if ( e && e != e_orig ) {
+		entry_free( e );
+	}
+
+	return rc;
+}
+
+static int
+datamorph_op_search( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	int rc = SLAP_CB_CONTINUE;
+
+	/*
+	 * 1. check all requested attributes -> register callback if one matches
+	 * 2. check filter: parse filter, traverse, for configured attributes:
+	 *    - presence -> do not touch
+	 *    - ava -> replace assertion value with db value if possible, assertion with undefined otherwise 
+	 *    - inequality -> ???
+	 *    - anything else -> undefined
+	 *    - might just check for equality and leave the rest to syntax?
+	 * 3. unparse filter
+	 */
+	if ( datamorph_filter( op, ov, op->ors_filter ) ) {
+		send_ldap_error(
+				op, rs, LDAP_OTHER, "datamorph: failed to process filter" );
+		return LDAP_OTHER;
+	}
+
+	return rc;
+}
+
+static int
+datamorph_entry_release_rw( Operation *op, Entry *e, int rw )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	int rc = LDAP_SUCCESS;
+
+	if ( on->on_next ) {
+		rc = overlay_entry_release_ov( op, e, rw, on->on_next );
+	} else if ( on->on_info->oi_orig->bi_entry_release_rw ) {
+		/* FIXME: there should be a better way */
+		rc = on->on_info->oi_orig->bi_entry_release_rw( op, e, rw );
+	} else {
+		entry_free( e );
+	}
+
+	return rc;
+}
+
+static int
+datamorph_entry_get_rw(
+		Operation *op,
+		struct berval *ndn,
+		ObjectClass *oc,
+		AttributeDescription *at,
+		int rw,
+		Entry **ep )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+	Entry *e_orig, *e = NULL;
+	int rc;
+
+	if ( on->on_next ) {
+		rc = overlay_entry_get_ov( op, ndn, oc, at, rw, ep, on->on_next );
+	} else {
+		/* FIXME: there should be a better way */
+		rc = on->on_info->oi_orig->bi_entry_get_rw( op, ndn, oc, at, rw, ep );
+	}
+	e_orig = *ep;
+
+	if ( rc == LDAP_SUCCESS && e_orig ) {
+		AttributeDescription *stop = NULL;
+		Attribute *a;
+
+		for ( a = e_orig->e_attrs; a; a = a->a_next ) {
+			transformation_info *t, needle = { .attr = a->a_desc };
+			BerVarray new_vals;
+
+			t = ldap_avl_find(
+					ov->transformations, &needle, transformation_info_cmp );
+			if ( !t ) continue;
+
+			rc = transform_from_db_format(
+					op, t, a->a_vals, a->a_numvals, &new_vals );
+			if ( rc != LDAP_SUCCESS ) {
+				goto fail;
+			}
+			if ( !e ) {
+				e = entry_dup( e_orig );
+			}
+
+			(void)attr_delete( &e->e_attrs, needle.attr );
+
+			rc = attr_merge( e, needle.attr, new_vals, NULL );
+			ber_bvarray_free( new_vals );
+			if ( rc != LDAP_SUCCESS ) {
+				goto fail;
+			}
+			if ( !stop ) {
+				stop = needle.attr;
+			}
+		}
+	}
+	if ( e ) {
+		datamorph_entry_release_rw( op, e_orig, rw );
+		*ep = e;
+	}
+
+	return rc;
+
+fail:
+	if ( e ) {
+		entry_free( e );
+	}
+	(void)datamorph_entry_release_rw( op, *ep, rw );
+	return rc;
+}
+
+/* Schema */
+
+static int
+datamorphBlobValidate( Syntax *syntax, struct berval *in )
+{
+	/* any value allowed */
+	return LDAP_SUCCESS;
+}
+
+int
+datamorphBinarySignedOrderingMatch( int *matchp,
+		slap_mask_t flags,
+		Syntax *syntax,
+		MatchingRule *mr,
+		struct berval *value,
+		void *assertedValue )
+{
+	struct berval *asserted = assertedValue;
+	ber_len_t v_len = value->bv_len;
+	ber_len_t av_len = asserted->bv_len;
+
+	/* Ordering:
+	 * 1. Negative always before non-negative
+	 * 2. Shorter before longer
+	 * 3. Rest ordered by memory contents (they are big-endian numbers)
+	 */
+	int match = ( *value->bv_val >= 0 ) - ( *asserted->bv_val >= 0 );
+
+	if ( match == 0 ) match = (int)v_len - (int)av_len;
+
+	if ( match == 0 ) match = memcmp( value->bv_val, asserted->bv_val, v_len );
+
+	/* If used in extensible match filter, match if value < asserted */
+	if ( flags & SLAP_MR_EXT ) match = ( match >= 0 );
+
+	*matchp = match;
+	return LDAP_SUCCESS;
+}
+
+/* Index generation function: Ordered index */
+int
+datamorphUnsignedIndexer( slap_mask_t use,
+		slap_mask_t flags,
+		Syntax *syntax,
+		MatchingRule *mr,
+		struct berval *prefix,
+		BerVarray values,
+		BerVarray *keysp,
+		void *ctx )
+{
+	int i;
+	BerVarray keys;
+
+	for ( i = 0; values[i].bv_val != NULL; i++ ) {
+		/* just count them */
+	}
+
+	/* we should have at least one value at this point */
+	assert( i > 0 );
+
+	keys = slap_sl_malloc( sizeof(struct berval) * ( i + 1 ), ctx );
+
+	for ( i = 0; values[i].bv_val != NULL; i++ ) {
+		ber_dupbv_x( &keys[i], &values[i], ctx );
+	}
+
+	BER_BVZERO( &keys[i] );
+
+	*keysp = keys;
+
+	return LDAP_SUCCESS;
+}
+
+/* Index generation function: Ordered index */
+int
+datamorphUnsignedFilter(
+		slap_mask_t use,
+		slap_mask_t flags,
+		Syntax *syntax,
+		MatchingRule *mr,
+		struct berval *prefix,
+		void *assertedValue,
+		BerVarray *keysp,
+		void *ctx )
+{
+	BerVarray keys;
+	BerValue *value = assertedValue;
+
+	keys = slap_sl_malloc( sizeof(struct berval) * 2, ctx );
+	ber_dupbv_x( &keys[0], value, ctx );
+
+	BER_BVZERO( &keys[1] );
+
+	*keysp = keys;
+
+	return LDAP_SUCCESS;
+}
+
+/* Index generation function: Ordered index */
+int
+datamorphSignedIndexer(
+		slap_mask_t use,
+		slap_mask_t flags,
+		Syntax *syntax,
+		MatchingRule *mr,
+		struct berval *prefix,
+		BerVarray values,
+		BerVarray *keysp,
+		void *ctx )
+{
+	int i;
+	BerVarray keys;
+
+	for ( i = 0; values[i].bv_val != NULL; i++ ) {
+		/* just count them */
+	}
+
+	/* we should have at least one value at this point */
+	assert( i > 0 );
+
+	keys = slap_sl_malloc( sizeof(struct berval) * ( i + 1 ), ctx );
+
+	for ( i = 0; values[i].bv_val != NULL; i++ ) {
+		keys[i].bv_len = values[i].bv_len + 1;
+		keys[i].bv_val = slap_sl_malloc( keys[i].bv_len, ctx );
+
+		/* if positive (highest bit is not set), note that in the first byte */
+		*keys[i].bv_val = ~( *values[i].bv_val & 0x80 );
+		AC_MEMCPY( keys[i].bv_val + 1, values[i].bv_val, values[i].bv_len );
+	}
+
+	BER_BVZERO( &keys[i] );
+
+	*keysp = keys;
+
+	return LDAP_SUCCESS;
+}
+
+/* Index generation function: Ordered index */
+int
+datamorphSignedFilter(
+		slap_mask_t use,
+		slap_mask_t flags,
+		Syntax *syntax,
+		MatchingRule *mr,
+		struct berval *prefix,
+		void *assertedValue,
+		BerVarray *keysp,
+		void *ctx )
+{
+	BerVarray keys;
+	BerValue *value = assertedValue;
+
+	keys = slap_sl_malloc( sizeof(struct berval) * 2, ctx );
+
+	keys[0].bv_len = value->bv_len + 1;
+	keys[0].bv_val = slap_sl_malloc( keys[0].bv_len, ctx );
+
+	/* if positive (highest bit is not set), note that in the first byte */
+	*keys[0].bv_val = ~( *value->bv_val & 0x80 );
+	AC_MEMCPY( keys[0].bv_val + 1, value->bv_val, value->bv_len );
+
+	BER_BVZERO( &keys[1] );
+
+	*keysp = keys;
+
+	return LDAP_SUCCESS;
+}
+
+#define DATAMORPH_ARC "1.3.6.1.4.1.4203.666.11.12"
+
+#define DATAMORPH_SYNTAXES DATAMORPH_ARC ".1"
+#define DATAMORPH_SYNTAX_BASE DATAMORPH_SYNTAXES ".1"
+#define DATAMORPH_SYNTAX_ENUM DATAMORPH_SYNTAXES ".2"
+#define DATAMORPH_SYNTAX_INT DATAMORPH_SYNTAXES ".3"
+#define DATAMORPH_SYNTAX_SIGNED_INT DATAMORPH_SYNTAXES ".4"
+
+#define DATAMORPH_MATCHES DATAMORPH_ARC ".2"
+#define DATAMORPH_MATCH_EQUALITY DATAMORPH_MATCHES ".1"
+#define DATAMORPH_MATCH_SIGNED_EQUALITY DATAMORPH_MATCHES ".2"
+#define DATAMORPH_MATCH_ORDERING DATAMORPH_MATCHES ".3"
+#define DATAMORPH_MATCH_SIGNED_ORDERING DATAMORPH_MATCHES ".4"
+
+static char *datamorph_sups[] = {
+	DATAMORPH_SYNTAX_BASE,
+	NULL
+};
+
+static char *datamorphSyntaxes[] = {
+	DATAMORPH_SYNTAX_SIGNED_INT,
+	DATAMORPH_SYNTAX_ENUM,
+	DATAMORPH_SYNTAX_INT,
+
+	NULL
+};
+
+static slap_syntax_defs_rec datamorph_syntax_defs[] = {
+	{ "( " DATAMORPH_SYNTAX_BASE " DESC 'Fixed size value' )",
+		0, NULL, NULL, NULL
+	},
+	{ "( " DATAMORPH_SYNTAX_ENUM " DESC 'Enumerated value' )",
+		0, datamorph_sups, datamorphBlobValidate, NULL
+	},
+	{ "( " DATAMORPH_SYNTAX_INT " DESC 'Fixed-size integer' )",
+		0, datamorph_sups, datamorphBlobValidate, NULL
+	},
+	{ "( " DATAMORPH_SYNTAX_SIGNED_INT " DESC 'Fixed-size signed integer' )",
+		0, datamorph_sups, datamorphBlobValidate, NULL
+	},
+
+	{ NULL, 0, NULL, NULL, NULL }
+};
+
+static Syntax *datamorph_base_syntax;
+
+static slap_mrule_defs_rec datamorph_mrule_defs[] = {
+	{ "( " DATAMORPH_MATCH_EQUALITY
+		" NAME 'fixedSizeIntegerMatch'"
+		" SYNTAX " DATAMORPH_SYNTAX_INT " )",
+		SLAP_MR_EQUALITY|SLAP_MR_EXT|SLAP_MR_ORDERED_INDEX,
+		datamorphSyntaxes + 1,
+		NULL, NULL, octetStringOrderingMatch,
+		datamorphUnsignedIndexer, datamorphUnsignedFilter,
+		NULL
+	},
+
+	{ "( " DATAMORPH_MATCH_SIGNED_EQUALITY
+		" NAME 'fixedSizeSignedIntegerMatch'"
+		" SYNTAX " DATAMORPH_SYNTAX_SIGNED_INT " )",
+		SLAP_MR_EQUALITY|SLAP_MR_EXT|SLAP_MR_ORDERED_INDEX,
+		NULL,
+		NULL, NULL, datamorphBinarySignedOrderingMatch,
+		datamorphSignedIndexer, datamorphSignedFilter,
+		NULL
+	},
+
+	{ "( " DATAMORPH_MATCH_ORDERING
+		" NAME 'fixedSizeIntegerOrderingMatch'"
+		" SYNTAX " DATAMORPH_SYNTAX_INT " )",
+		SLAP_MR_ORDERING|SLAP_MR_EXT|SLAP_MR_ORDERED_INDEX,
+		datamorphSyntaxes + 1,
+		NULL, NULL, octetStringOrderingMatch,
+		datamorphUnsignedIndexer, datamorphUnsignedFilter,
+		"octetStringMatch" },
+
+	{ "( " DATAMORPH_MATCH_SIGNED_ORDERING
+		" NAME 'fixedSizeSignedIntegerOrderingMatch'"
+		" SYNTAX " DATAMORPH_SYNTAX_SIGNED_INT " )",
+		SLAP_MR_ORDERING|SLAP_MR_EXT|SLAP_MR_ORDERED_INDEX,
+		NULL,
+		NULL, NULL, datamorphBinarySignedOrderingMatch,
+		datamorphSignedIndexer, datamorphSignedFilter,
+		"octetStringMatch" },
+
+	{ NULL, SLAP_MR_NONE, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
+};
+
+/* Configuration */
+
+static ConfigLDAPadd datamorph_ldadd_enum;
+static ConfigLDAPadd datamorph_ldadd_interval;
+static ConfigLDAPadd datamorph_ldadd_mapping;
+
+static ConfigDriver datamorph_set_attribute;
+static ConfigDriver datamorph_set_size;
+static ConfigDriver datamorph_set_signed;
+static ConfigDriver datamorph_set_bounds;
+static ConfigDriver datamorph_set_index;
+static ConfigDriver datamorph_set_value;
+static ConfigDriver datamorph_add_mapping;
+static ConfigDriver datamorph_add_transformation;
+
+static ConfigCfAdd datamorph_cfadd;
+
+enum {
+	DATAMORPH_INT_SIZE = 1,
+	DATAMORPH_INT_SIGNED,
+	DATAMORPH_INT_LOWER,
+	DATAMORPH_INT_UPPER,
+
+	DATAMORPH_INT_LAST,
+};
+
+static ConfigTable datamorph_cfg[] = {
+	{ "datamorph_attribute", "attr", 2, 2, 0,
+		ARG_STRING|ARG_QUOTE|ARG_MAGIC,
+		datamorph_set_attribute,
+		"( OLcfgCtAt:7.1 NAME 'olcDatamorphAttribute' "
+			"DESC 'Attribute to transform' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "datamorph_size", "<1|2|4|8>", 2, 2, 0,
+		ARG_INT|ARG_MAGIC|DATAMORPH_INT_SIZE,
+		datamorph_set_size,
+		"( OLcfgCtAt:7.2 NAME 'olcDatamorphIntegerBytes' "
+			"DESC 'Integer size in bytes' "
+			"EQUALITY integerMatch "
+			"SYNTAX OMsInteger "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "datamorph_signed", "TRUE|FALSE", 2, 2, 0,
+		ARG_ON_OFF|ARG_MAGIC|DATAMORPH_INT_SIGNED,
+		datamorph_set_signed,
+		"( OLcfgCtAt:7.3 NAME 'olcDatamorphIntegerSigned' "
+			"DESC 'Whether integers maintain sign' "
+			"EQUALITY booleanMatch "
+			"SYNTAX OMsBoolean "
+				"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	{ "datamorph_lower_bound", "int", 2, 2, 0,
+		ARG_BERVAL|ARG_MAGIC|DATAMORPH_INT_LOWER,
+		datamorph_set_bounds,
+		"( OLcfgCtAt:7.4 NAME 'olcDatamorphIntegerLowerBound' "
+			"DESC 'Lowest valid value for the attribute' "
+			"EQUALITY integerMatch "
+			"SYNTAX OMsInteger "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "datamorph_upper_bound", "int", 2, 2, 0,
+		ARG_BERVAL|ARG_MAGIC|DATAMORPH_INT_UPPER,
+		datamorph_set_bounds,
+		"( OLcfgCtAt:7.5 NAME 'olcDatamorphIntegerUpperBound' "
+			"DESC 'Highest valid value for the attribute' "
+			"EQUALITY integerMatch "
+			"SYNTAX OMsInteger "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+
+	/* These have no equivalent in slapd.conf */
+	{ "", NULL, 2, 2, 0,
+		ARG_INT|ARG_MAGIC,
+		datamorph_set_index,
+		"( OLcfgCtAt:7.6 NAME 'olcDatamorphIndex' "
+			"DESC 'Internal DB value' "
+			"EQUALITY integerMatch "
+			"SYNTAX OMsInteger "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "", NULL, 2, 2, 0,
+		ARG_BERVAL|ARG_QUOTE|ARG_MAGIC,
+		datamorph_set_value,
+		"( OLcfgCtAt:7.7 NAME 'olcDatamorphValue' "
+			"DESC 'Wire value' "
+			"EQUALITY caseExactMatch "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+
+	/* slapd.conf alternative for the two above */
+	{ "datamorph_value", "int> <name", 3, 3, 0,
+		ARG_QUOTE|ARG_MAGIC,
+		datamorph_add_mapping,
+		NULL, NULL, NULL
+	},
+
+	/* slapd.conf alternative for objectclasses below */
+	{ "datamorph", "enum|int> <attr", 3, 3, 0,
+		ARG_QUOTE|ARG_MAGIC,
+		datamorph_add_transformation,
+		NULL, NULL, NULL
+	},
+
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs datamorph_ocs[] = {
+	{ "( OLcfgCtOc:7.1 "
+		"NAME 'olcDatamorphConfig' "
+		"DESC 'Datamorph overlay configuration' "
+		"SUP olcOverlayConfig )",
+		Cft_Overlay, datamorph_cfg, NULL, datamorph_cfadd },
+	{ "( OLcfgCtOc:7.2 "
+		"NAME 'olcTransformation' "
+		"DESC 'Transformation configuration' "
+		"MUST ( olcDatamorphAttribute ) "
+		"SUP top "
+		"ABSTRACT )",
+		Cft_Misc, datamorph_cfg, NULL },
+	{ "( OLcfgCtOc:7.3 "
+		"NAME 'olcDatamorphEnum' "
+		"DESC 'Configuration for an enumerated attribute' "
+		"SUP olcTransformation "
+		"STRUCTURAL )",
+		Cft_Misc, datamorph_cfg, datamorph_ldadd_enum },
+	{ "( OLcfgCtOc:7.4 "
+		"NAME 'olcDatamorphInteger' "
+		"DESC 'Configuration for a compact integer attribute' "
+		"MUST ( olcDatamorphIntegerBytes ) "
+		"MAY ( olcDatamorphIntegerLowerBound $ "
+			"olcDatamorphIntegerUpperBound $ "
+			"olcDatamorphIntegerSigned "
+		") "
+		"SUP olcTransformation "
+		"STRUCTURAL )",
+		Cft_Misc, datamorph_cfg, datamorph_ldadd_interval },
+	{ "( OLcfgCtOc:7.5 "
+		"NAME 'olcDatamorphEnumValue' "
+		"DESC 'Configuration for an enumerated attribute' "
+		"MUST ( olcDatamorphIndex $ "
+			"olcDatamorphValue "
+		") "
+		"STRUCTURAL )",
+		Cft_Misc, datamorph_cfg, datamorph_ldadd_mapping },
+
+	{ NULL, 0, NULL }
+};
+
+static void
+datamorph_mapping_free( void *arg )
+{
+	datamorph_enum_mapping *mapping = arg;
+
+	ch_free( mapping->wire_value.bv_val );
+	ch_free( mapping );
+}
+
+static void
+datamorph_info_free( void *arg )
+{
+	transformation_info *info = arg;
+
+	if ( info->type == DATAMORPH_ENUM ) {
+		ldap_avl_free( info->ti_enum.to_db, datamorph_mapping_free );
+	}
+	ch_free( info );
+}
+
+static int
+datamorph_set_attribute( ConfigArgs *ca )
+{
+	transformation_info needle = {}, *info = ca->ca_private;
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	datamorph_info *ov = on->on_bi.bi_private;
+	char *s = ca->value_string;
+	const char *text;
+	int rc = LDAP_SUCCESS;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_string = info->attr->ad_cname.bv_val;
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		info = ldap_avl_delete( &ov->transformations, info,
+				transformation_info_cmp );
+		assert( info );
+
+		info->attr = NULL;
+		return LDAP_SUCCESS;
+	}
+
+	if ( *s == '{' ) {
+		s = strchr( s, '}' );
+		if ( !s ) {
+			rc = LDAP_UNDEFINED_TYPE;
+			goto done;
+		}
+		s += 1;
+	}
+
+	rc = slap_str2ad( s, &info->attr, &text );
+	ch_free( ca->value_string );
+	if ( rc ) {
+		goto done;
+	}
+
+	/* The type has to be set appropriately */
+	if ( !info->attr->ad_type->sat_syntax->ssyn_sups ||
+			info->attr->ad_type->sat_syntax->ssyn_sups[0] !=
+					datamorph_base_syntax ) {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg),
+				"improper syntax for attribute %s",
+				info->attr->ad_cname.bv_val );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		rc = LDAP_CONSTRAINT_VIOLATION;
+		goto done;
+	}
+
+	needle.attr = info->attr;
+	if ( ldap_avl_find( ov->transformations, &needle, transformation_info_cmp ) ) {
+		rc = LDAP_CONSTRAINT_VIOLATION;
+		goto done;
+	}
+
+done:
+	if ( rc ) {
+		ca->reply.err = rc;
+	}
+	return rc;
+}
+
+static int
+datamorph_set_size( ConfigArgs *ca )
+{
+	transformation_info *info = ca->ca_private;
+
+	if ( !info ) {
+		slap_overinst *on = (slap_overinst *)ca->bi;
+		datamorph_info *ov = on->on_bi.bi_private;
+		info = ov->wip_transformation;
+		assert( ca->op == SLAP_CONFIG_ADD );
+	}
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_int = info->ti_int.size;
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		info->ti_int.size = 0;
+		return LDAP_SUCCESS;
+	}
+
+	if ( ca->value_int != 1 &&
+			ca->value_int != 2 &&
+			ca->value_int != 4 &&
+			ca->value_int != 8 ) {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg), "invalid size %d",
+				ca->value_int );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	}
+	info->ti_int.size = ca->value_int;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_set_signed( ConfigArgs *ca )
+{
+	transformation_info *info = ca->ca_private;
+
+	if ( !info ) {
+		slap_overinst *on = (slap_overinst *)ca->bi;
+		datamorph_info *ov = on->on_bi.bi_private;
+		info = ov->wip_transformation;
+		assert( ca->op == SLAP_CONFIG_ADD );
+	}
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_int = info->ti_int.flags & DATAMORPH_FLAG_SIGNED;
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		info->ti_int.flags &= ~DATAMORPH_FLAG_SIGNED;
+		return LDAP_SUCCESS;
+	}
+
+	info->ti_int.flags &= ~DATAMORPH_FLAG_SIGNED;
+	if ( ca->value_int ) {
+		info->ti_int.flags |= DATAMORPH_FLAG_SIGNED;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_set_bounds( ConfigArgs *ca )
+{
+	transformation_info *info = ca->ca_private;
+	datamorph_interval_bound *bound;
+	uint64_t unsigned_bound;
+	int64_t signed_bound;
+	char *ptr = ca->value_bv.bv_val + ca->value_bv.bv_len;
+	int flag;
+
+	if ( !info ) {
+		slap_overinst *on = (slap_overinst *)ca->bi;
+		datamorph_info *ov = on->on_bi.bi_private;
+		info = ov->wip_transformation;
+		assert( ca->op == SLAP_CONFIG_ADD );
+	}
+
+	switch ( ca->type ) {
+		case DATAMORPH_INT_LOWER:
+			bound = &info->ti_int.lower;
+			flag = DATAMORPH_FLAG_LOWER;
+			break;
+		case DATAMORPH_INT_UPPER:
+			bound = &info->ti_int.upper;
+			flag = DATAMORPH_FLAG_UPPER;
+			break;
+		default:
+			assert(0);
+	}
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		char buf[24];
+		struct berval bv = { .bv_val = buf };
+
+		if ( !(info->ti_int.flags & flag) ) {
+			/* Bound not set, do not emit */
+			return LDAP_SUCCESS;
+		}
+		if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+			bv.bv_len = sprintf( buf, "%" PRId64, bound->i );
+		} else {
+			bv.bv_len = sprintf( buf, "%" PRIu64, bound->u );
+		}
+		ber_dupbv_x( &ca->value_bv, &bv, ca->ca_op->o_tmpmemctx );
+
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		info->ti_int.flags &= ~flag;
+		if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+			bound->i = (flag == DATAMORPH_FLAG_LOWER) ? INT64_MIN : INT64_MAX;
+		} else {
+			bound->u = (flag == DATAMORPH_FLAG_LOWER) ? 0 : UINT64_MAX;
+		}
+		return LDAP_SUCCESS;
+	}
+
+	/* FIXME: if attributes in the Add operation come in the wrong order
+	 * (signed=true after the bound definition), we can't check the interval
+	 * sanity. */
+	/*
+	if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+		signed_bound = strtoll( ca->value_bv.bv_val, &ptr, 10 );
+	} else {
+		unsigned_bound = strtoull( ca->value_bv.bv_val, &ptr, 10 );
+	}
+	*/
+	/* Also, no idea what happens in the case of big-endian, hopefully,
+	 * it behaves the same */
+	unsigned_bound = strtoull( ca->value_bv.bv_val, &ptr, 10 );
+	signed_bound = (int64_t)unsigned_bound;
+
+	if ( *ca->value_bv.bv_val == '\0' || *ptr != '\0' ) {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg),
+				"failed to parse '%s' as integer",
+				ca->value_bv.bv_val );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	}
+	ch_free( ca->value_bv.bv_val );
+
+	info->ti_int.flags |= flag;
+	switch ( info->ti_int.size ) {
+		case 1:
+			if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+				/* See FIXME above
+				if ( signed_bound < INT8_MIN || signed_bound > INT8_MAX ) {
+					goto fail;
+				}
+				*/
+			} else {
+				/* See FIXME above
+				if ( unsigned_bound > UINT8_MAX ) {
+					goto fail;
+				}
+				*/
+			}
+			break;
+		case 2:
+			if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+				/* See FIXME above
+				if ( signed_bound < INT16_MIN || signed_bound > INT16_MAX ) {
+					goto fail;
+				}
+				*/
+			} else {
+				/* See FIXME above
+				if ( unsigned_bound > UINT16_MAX ) {
+					goto fail;
+				}
+				*/
+			}
+			break;
+		case 4:
+			if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+				/* See FIXME above
+				if ( signed_bound < INT32_MIN || signed_bound > INT32_MAX ) {
+					goto fail;
+				}
+				*/
+			} else {
+				/* See FIXME above
+				if ( unsigned_bound > UINT32_MAX ) {
+					goto fail;
+				}
+				*/
+			}
+			break;
+		case 8:
+			break;
+		default:
+			/* Should only happen in these two cases:
+			 * 1. datamorph_size not yet encountered for this one (when
+			 *    processing slapd.conf)
+			 * 2. When someone runs a fun modification on the config entry
+			 *    messing with more attributes at once
+			 *
+			 * The error message is expected to be helpful only for the former,
+			 * so use the slapd.conf name.
+			 */
+			snprintf( ca->cr_msg, sizeof(ca->cr_msg),
+					"datamorph_size has to be set first!" );
+			Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+			ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+			return ca->reply.err;
+	}
+	if ( info->ti_int.flags & DATAMORPH_FLAG_SIGNED ) {
+		bound->i = signed_bound;
+	} else {
+		bound->u = unsigned_bound;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_set_value( ConfigArgs *ca )
+{
+	datamorph_enum_mapping *mapping = ca->ca_private;
+	char *s = ca->value_bv.bv_val;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		/* We generate the value as part of the RDN, don't add anything */
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		ch_free( mapping->wire_value.bv_val );
+		BER_BVZERO( &mapping->wire_value );
+		/* TODO: remove from info->ti_enum.to_db? */
+		return LDAP_SUCCESS;
+	}
+
+	/* As long as this attribute can be in the RDN,
+	 * we have to expect the '{n}' prefix */
+	if ( *s == '{' ) {
+		ber_len_t len;
+		s = memchr( s, '}', ca->value_bv.bv_len );
+		if ( !s ) {
+			ca->reply.err = LDAP_UNDEFINED_TYPE;
+			return ca->reply.err;
+		}
+		s += 1;
+
+		len = ca->value_bv.bv_len - ( s - ca->value_bv.bv_val );
+		ber_str2bv( s, len, 1, &mapping->wire_value );
+		ch_free( ca->value_bv.bv_val );
+	} else {
+		mapping->wire_value = ca->value_bv;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_set_index( ConfigArgs *ca )
+{
+	datamorph_enum_mapping *mapping = ca->ca_private;
+	struct berval *from_db = mapping->transformation->ti_enum.from_db;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_int = mapping->db_value;
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		BER_BVZERO( &from_db[mapping->db_value] );
+		return LDAP_SUCCESS;
+	}
+
+	if ( ca->value_int < 0 || ca->value_int >= 256 ) {
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	} else if ( !BER_BVISNULL( &from_db[ca->value_int] ) ) {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg), "duplicate index %d",
+				ca->value_int );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	}
+	mapping->db_value = ca->value_int;
+	from_db[ca->value_int] = mapping->wire_value;
+
+	return LDAP_SUCCESS;
+}
+
+/* Called when processing slapd.conf only,
+ * cn=config uses the objectclass to decide which type we're dealing with.
+ */
+static int
+datamorph_add_transformation( ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	datamorph_info *ov = on->on_bi.bi_private;
+	transformation_info *info;
+
+	if ( ov->wip_transformation ) {
+		/* We checked everything as were processing the lines */
+		int rc = ldap_avl_insert( &ov->transformations, ov->wip_transformation,
+				transformation_info_cmp, ldap_avl_dup_error );
+		assert( rc == LDAP_SUCCESS );
+	}
+
+	info = ch_calloc( 1, sizeof(transformation_info) );
+	ov->wip_transformation = ca->ca_private = info;
+
+	if ( !strcasecmp( ca->argv[1], "enum" ) ) {
+		info->type = DATAMORPH_ENUM;
+	} else if ( !strcasecmp( ca->argv[1], "int" ) ) {
+		info->type = DATAMORPH_INT;
+	} else {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg),
+				"unknown transformation type '%s'", ca->argv[1] );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	}
+
+	ca->value_string = strdup( ca->argv[2] );
+
+	return datamorph_set_attribute( ca );
+}
+
+static int
+datamorph_add_mapping( ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	datamorph_info *ov = on->on_bi.bi_private;
+	transformation_info *info = ov->wip_transformation;
+	datamorph_enum_mapping *mapping;
+	int rc = LDAP_CONSTRAINT_VIOLATION;
+
+	if ( !info ) {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg), "no attribute configured" );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		goto done;
+	}
+
+	mapping = ch_calloc( 1, sizeof(datamorph_enum_mapping) );
+	mapping->transformation = info;
+	ca->ca_private = mapping;
+
+	ber_str2bv( ca->argv[2], 0, 1, &ca->value_bv );
+	rc = datamorph_set_value( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	rc = lutil_atoix( &ca->value_int, ca->argv[1], 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		snprintf( ca->cr_msg, sizeof(ca->cr_msg), "invalid integer %s",
+				ca->argv[1] );
+		Debug( LDAP_DEBUG_ANY, "%s: %s\n", ca->log, ca->cr_msg );
+		goto done;
+	}
+
+	rc = datamorph_set_index( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+done:
+	if ( rc == LDAP_SUCCESS ) {
+		rc = ldap_avl_insert( &info->ti_enum.to_db, mapping,
+				transformation_mapping_cmp, ldap_avl_dup_error );
+	}
+	if ( rc ) {
+		ca->reply.err = rc;
+	}
+
+	return rc;
+}
+
+static int
+datamorph_ldadd_info_cleanup( ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	datamorph_info *ov = on->on_bi.bi_private;
+	transformation_info *info = ca->ca_private;
+
+	if ( ca->reply.err != LDAP_SUCCESS ) {
+		/* Not reached since cleanup is only called on success */
+fail:
+		ch_free( info );
+		return LDAP_SUCCESS;
+	}
+
+	if ( ldap_avl_insert( &ov->transformations, info, transformation_info_cmp,
+			ldap_avl_dup_error ) ) {
+		goto fail;
+	}
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_ldadd_transformation(
+		CfEntryInfo *cei,
+		Entry *e,
+		ConfigArgs *ca,
+		datamorph_type type )
+{
+	transformation_info *info;
+
+	if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
+			cei->ce_bi->bi_cf_ocs != datamorph_ocs )
+		return LDAP_CONSTRAINT_VIOLATION;
+
+	info = ch_calloc( 1, sizeof(transformation_info) );
+	info->type = type;
+
+	ca->bi = cei->ce_bi;
+	ca->ca_private = info;
+	config_push_cleanup( ca, datamorph_ldadd_info_cleanup );
+	/* config_push_cleanup is only run in the case of online config but we use it to
+	 * enable the new config when done with the entry */
+	ca->lineno = 0;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_ldadd_enum( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+	return datamorph_ldadd_transformation( cei, e, ca, DATAMORPH_ENUM );
+}
+
+static int
+datamorph_ldadd_interval( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+	return datamorph_ldadd_transformation( cei, e, ca, DATAMORPH_INT );
+}
+
+static int
+datamorph_ldadd_mapping_cleanup( ConfigArgs *ca )
+{
+	datamorph_enum_mapping *mapping = ca->ca_private;
+	transformation_info *info = mapping->transformation;
+
+	if ( ca->reply.err != LDAP_SUCCESS ) {
+		/* Not reached since cleanup is only called on success */
+fail:
+		datamorph_mapping_free( mapping );
+		return LDAP_SUCCESS;
+	}
+
+	if ( ldap_avl_insert( &info->ti_enum.to_db, mapping, transformation_mapping_cmp,
+			ldap_avl_dup_error ) ) {
+		goto fail;
+	}
+	info->ti_enum.from_db[mapping->db_value] = mapping->wire_value;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_ldadd_mapping( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+	transformation_info *info;
+	datamorph_enum_mapping *mapping;
+	CfEntryInfo *parent = cei->ce_parent;
+
+	if ( cei->ce_type != Cft_Misc || !parent || !parent->ce_bi ||
+			parent->ce_bi->bi_cf_ocs != datamorph_ocs )
+		return LDAP_CONSTRAINT_VIOLATION;
+
+	info = cei->ce_private;
+
+	mapping = ch_calloc( 1, sizeof(datamorph_enum_mapping) );
+	mapping->transformation = info;
+
+	ca->ca_private = mapping;
+	config_push_cleanup( ca, datamorph_ldadd_mapping_cleanup );
+	/* config_push_cleanup is only run in the case of online config but we use it to
+	 * enable the new config when done with the entry */
+	ca->lineno = 0;
+
+	return LDAP_SUCCESS;
+}
+
+struct datamorph_cfadd_args {
+	Operation *op;
+	SlapReply *rs;
+	Entry *p;
+	ConfigArgs *ca;
+	int index;
+};
+
+static int
+datamorph_config_build_enum( void *item, void *arg )
+{
+	datamorph_enum_mapping *mapping = item;
+	struct datamorph_cfadd_args *args = arg;
+	struct berval rdn;
+	Entry *e;
+	char *p;
+	ber_len_t index;
+
+	rdn.bv_len = snprintf( args->ca->cr_msg, sizeof(args->ca->cr_msg),
+			"olcDatamorphValue={%d}", args->index++ );
+	rdn.bv_val = args->ca->cr_msg;
+	p = rdn.bv_val + rdn.bv_len;
+
+	rdn.bv_len += mapping->wire_value.bv_len;
+	for ( index = 0; index < mapping->wire_value.bv_len; index++ ) {
+		if ( RDN_NEEDSESCAPE(mapping->wire_value.bv_val[index]) ) {
+			rdn.bv_len++;
+			*p++ = '\\';
+		}
+		*p++ = mapping->wire_value.bv_val[index];
+	}
+	*p = '\0';
+
+	args->ca->ca_private = mapping;
+	args->ca->ca_op = args->op;
+	e = config_build_entry( args->op, args->rs, args->p->e_private, args->ca,
+			&rdn, &datamorph_ocs[4], NULL );
+	assert( e );
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_config_build_attr( void *item, void *arg )
+{
+	transformation_info *info = item;
+	struct datamorph_cfadd_args *args = arg;
+	struct berval rdn;
+	ConfigOCs *oc;
+	Entry *e;
+
+	rdn.bv_len = snprintf( args->ca->cr_msg, sizeof(args->ca->cr_msg),
+			"olcDatamorphAttribute={%d}%s", args->index++,
+			info->attr->ad_cname.bv_val );
+	rdn.bv_val = args->ca->cr_msg;
+
+	switch ( info->type ) {
+		case DATAMORPH_ENUM:
+			oc = &datamorph_ocs[2];
+			break;
+		case DATAMORPH_INT:
+			oc = &datamorph_ocs[3];
+			break;
+		default:
+			assert(0);
+			break;
+	}
+
+	args->ca->ca_private = info;
+	args->ca->ca_op = args->op;
+	e = config_build_entry(
+			args->op, args->rs, args->p->e_private, args->ca, &rdn, oc, NULL );
+	assert( e );
+
+	if ( info->type == DATAMORPH_ENUM ) {
+		struct datamorph_cfadd_args new_args = *args;
+		new_args.p = e;
+		new_args.index = 0;
+
+		return ldap_avl_apply( info->ti_enum.to_db, datamorph_config_build_enum,
+				&new_args, 1, AVL_PREORDER );
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	datamorph_info *ov = on->on_bi.bi_private;
+	struct datamorph_cfadd_args args = {
+			.op = op,
+			.rs = rs,
+			.p = p,
+			.ca = ca,
+			.index = 0,
+	};
+
+	if ( ov->wip_transformation ) {
+		/* There is one last item that is unfinished */
+		int rc = ldap_avl_insert( &ov->transformations, ov->wip_transformation,
+				transformation_info_cmp, ldap_avl_dup_error );
+		assert( rc == LDAP_SUCCESS );
+	}
+
+	return ldap_avl_apply( ov->transformations, &datamorph_config_build_attr, &args,
+			1, AVL_PREORDER );
+}
+
+static slap_overinst datamorph;
+
+static int
+datamorph_db_init( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	datamorph_info *ov;
+
+	/* TODO: can this be global? */
+	if ( SLAP_ISGLOBALOVERLAY(be) ) {
+		Debug( LDAP_DEBUG_ANY, "datamorph overlay must be instantiated "
+				"within a database.\n" );
+		return 1;
+	}
+
+	ov = ch_calloc( 1, sizeof(datamorph_info) );
+	on->on_bi.bi_private = ov;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+datamorph_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	datamorph_info *ov = on->on_bi.bi_private;
+
+	if ( ov ) {
+		ldap_avl_free( ov->transformations, datamorph_info_free );
+	}
+	ch_free( ov );
+
+	return LDAP_SUCCESS;
+}
+
+int
+datamorph_initialize()
+{
+	int rc, i;
+
+	datamorph.on_bi.bi_type = "datamorph";
+	datamorph.on_bi.bi_db_init = datamorph_db_init;
+	datamorph.on_bi.bi_db_destroy = datamorph_db_destroy;
+
+	datamorph.on_bi.bi_op_add = datamorph_op_add;
+	datamorph.on_bi.bi_op_compare = datamorph_op_compare;
+	datamorph.on_bi.bi_op_modify = datamorph_op_mod;
+	datamorph.on_bi.bi_op_modrdn = datamorph_op_modrdn;
+	datamorph.on_bi.bi_op_search = datamorph_op_search;
+	datamorph.on_response = datamorph_response;
+
+	datamorph.on_bi.bi_entry_release_rw = datamorph_entry_release_rw;
+	datamorph.on_bi.bi_entry_get_rw = datamorph_entry_get_rw;
+
+	datamorph.on_bi.bi_cf_ocs = datamorph_ocs;
+
+	for ( i = 0; datamorph_syntax_defs[i].sd_desc != NULL; i++ ) {
+		rc = register_syntax( &datamorph_syntax_defs[i] );
+
+		if ( rc ) {
+			Debug( LDAP_DEBUG_ANY, "datamorph_initialize: "
+					"error registering syntax %s\n",
+					datamorph_syntax_defs[i].sd_desc );
+			return rc;
+		}
+	}
+
+	datamorph_base_syntax = syn_find( DATAMORPH_SYNTAX_BASE );
+	assert( datamorph_base_syntax );
+
+	for ( i = 0; datamorph_mrule_defs[i].mrd_desc != NULL; i++ ) {
+		rc = register_matching_rule( &datamorph_mrule_defs[i] );
+
+		if ( rc ) {
+			Debug( LDAP_DEBUG_ANY, "datamorph_initialize: "
+					"error registering matching rule %s\n",
+					datamorph_mrule_defs[i].mrd_desc );
+			return rc;
+		}
+	}
+
+	rc = config_register_schema( datamorph_cfg, datamorph_ocs );
+	if ( rc ) return rc;
+
+	return overlay_register( &datamorph );
+}
+
+#if SLAPD_OVER_DATAMORPH == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return datamorph_initialize();
+}
+#endif
+
+#endif /* SLAPD_OVER_DATAMORPH */
diff --git a/contrib/slapd-modules/datamorph/slapo-datamorph.5 b/contrib/slapd-modules/datamorph/slapo-datamorph.5
new file mode 100644
index 0000000..0ce0c6a
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/slapo-datamorph.5
@@ -0,0 +1,338 @@
+.TH SLAPO-DATAMORPH 5 "RELEASEDATE" "OpenLDAP"
+.\" Copyright 2016-2017 Symas Corp. All Rights Reserved.
+.\" Copying restrictions apply.  See LICENSE.
+.SH NAME
+slapo\-datamorph \- store enumerated values and fixed size integers
+.SH SYNOPSIS
+olcOverlay=datamorph
+.SH DESCRIPTION
+The
+.B datamorph
+overlay to
+.BR slapd (8)
+allows attributes with a few pre-defined values to be saved more
+space-efficiently as well as signed or unsigned integer attributes.
+
+.LP
+The overlay operates on configured attributes that must have their syntax
+compatible with
+.BR 1.3.6.1.4.1.4203.666.11.12.1.1 ,
+there are three such syntaxes defined by the overlay:
+.B 1.3.6.1.4.1.4203.666.11.12.1.2
+(Enumerated value),
+.B 1.3.6.1.4.1.4203.666.11.12.1.3
+(Fixed-size integer), and
+.B 1.3.6.1.4.1.4203.666.11.12.1.4
+(Fixed-size signed integer).
+.LP
+
+While transforming the request, if a value for an attribute is not permitted by the configuration, the behaviour depends on the operation:
+
+.RS
+.TP
+.B Search
+The affected value assertions in a
+.B Search
+request filter are replaced by a filter returning
+.B Undefined .
+.TP
+.B Compare
+Request returns
+.B Compare
+.BR False .
+.TP
+.B Add, Modify
+Requests are rejected with a
+.B Constraint
+.BR Violation .
+.RE
+
+The supported allowed matching rules for the attribute types above are:
+
+.RS
+.TP
+.B EQUALITY fixedSizeIntegerMatch
+Appropriate for syntaxes
+.B 1.3.6.1.4.1.4203.666.11.12.1.2
+(Enumerated value), and
+.B 1.3.6.1.4.1.4203.666.11.12.1.3
+(Fixed-size integer).
+.TP
+.B EQUALITY fixedSizeSignedIntegerMatch
+Appropriate for syntax
+.B 1.3.6.1.4.1.4203.666.11.12.1.4
+(Fixed-size signed integer) only.
+.TP
+.B ORDERING fixedSizeIntegerOrderingMatch
+Appropriate for syntaxes
+.B 1.3.6.1.4.1.4203.666.11.12.1.2
+(Enumerated value), and
+.B 1.3.6.1.4.1.4203.666.11.12.1.3
+(Fixed-size integer). Enumerated value attributes are compared according to
+their stored database value.
+.TP
+.B ORDERING fixedSizeSignedIntegerOrderingMatch
+Appropriate for syntax
+.B 1.3.6.1.4.1.4203.666.11.12.1.4
+(Fixed-size signed integer) only.
+
+
+.SH CONFIGURATION LAYOUT
+
+The overlay has to be instantiated under a database adding an entry of
+.B olcOverlay=datamorph
+with objectClass of
+.BR olcDatamorphConfig.
+
+The overlay configuration subtree consists of the following levels:
+.RS
+.TP
+.B objectClass=olcDatamorphConfig
+Main overlay configuration. Created directly under the database
+configuration entry.
+.TP
+.B objectClass=olcDatamorphInteger
+Specifies a
+.B fixed-size integer
+attribute and must be a child of an entry with
+.BR objectClass=olcDatamorphConfig .
+There may be as many such entries as necessary provided they all specify a
+different attribute in the
+.B olcDatamorphAttribute
+attribute.
+.TP
+.B objectClass=olcDatamorphEnum
+Specifies an
+.B enumerated
+attribute and must be a child of an entry with
+.BR objectClass=olcDatamorphConfig .
+There may be as many such entries as necessary provided they all specify a
+different attribute in the
+.B olcDatamorphAttribute
+attribute.
+.TP
+.B objectClass=olcDatamorphEnumValue
+Specifies a permitted value for the enumerated attribute and its database
+representation. Must be a child of an entry with
+.BR objectClass=olcDatamorphEnum .
+There may be as many such entries as necessary provided they all specify a
+different value and index in the corresponding fields.
+.RE
+
+In the case of
+.BR slapd.conf (5),
+the attribute definition is delimited by the keyword
+.B datamorph
+to define an integer or enumerated attribute followed by an arbitrary number of
+.B datamorph_value
+lines in the case of an enumerated one. Each new
+.B datamorph
+line starts configuring a new attribute.
+
+.SH ENUMERATED ATTRIBUTE CONFIGURATION ENTRY
+
+The enumerated attribute entry configuration
+.RB ( olcDatamorphEnum )
+only has the following option available:
+
+.RS
+.TP
+.B olcDatamorphAttribute: <attribute>
+Mandatory attribute, indicates that the named attribute is to be handled by the
+overlay. The
+.BR slapd.conf (5)
+equivalent is
+.B datamorph "int"
+.BR <attribute> .
+.RE
+
+The children of this entry then define how the string values map to the
+database values. They use the objectclass
+.BR olcDatamorphEnumValue ,
+which asks for the following attributes:
+
+.RS
+.TP
+.B olcDatamorphValue: <value>
+A permitted value for the attribute being configured.
+.TP
+.B olcDatamorphIndex: <0-255>
+The corresponding database value.
+.RE
+
+The
+.BR slapd.conf (5)
+equivalent of the above two is
+.B datamorph_value <0-255> <value>
+.RB .
+
+.SH FIXED-WIDTH INTEGER CONFIGURATION ENTRY
+
+The fixed-width integer configuration entry
+.RB ( olcDatamorphInteger )
+has the following options available:
+
+.RS
+.TP
+.B olcDatamorphAttribute: <attribute>
+Mandatory attribute, indicates that the named attribute is to be handled by the
+overlay. The
+.BR slapd.conf (5)
+equivalent is
+.B datamorph "int"
+.BR <attribute> .
+.TP
+.B olcDatamorphIntegerBytes: <1|2|4|8>
+Size of the integer as stored in the backend. The
+.BR slapd.conf (5)
+equivalent is
+.B datamorph_size
+.BR <1|2|4|8> .
+.TP
+.B olcDatamorphIntegerSigned: <TRUE|FALSE>
+Whether the integer is to be treated as signed. Note that the overlay will not
+enforce consistency between this option and the attribute's syntax. The
+.BR slapd.conf (5)
+equivalent is
+.B datamorph_signed
+.BR <TRUE|FALSE> .
+.TP
+.B olcDatamorphIntegerLowerBound: <number>
+The lowest value that the configured attribute will be allowed to have. This
+affects all operations where values are mentioned. The
+.BR slapd.conf (5)
+equivalent is
+.B datamorph_lower_bound
+.BR <number> .
+.TP
+.B olcDatamorphIntegerUpperBound: <number>
+The highest value that the configured attribute will be allowed to have. This
+affects all operations where values are mentioned. The
+.BR slapd.conf (5)
+equivalent is
+.B datamorph_upper_bound
+.BR <number> .
+.RE
+
+.SH EXAMPLE
+
+The following is an example of a configured overlay, substitute
+.B $DATABASE
+for the DN of the database it is attached to and
+.B {x}
+with the desired position of the overlay in the overlay stack.
+
+.nf
+dn: olcOverlay={x}datamorph,$DATABASE
+objectClass: olcDatamorphConfig
+olcOverlay: datamorph
+
+# to handle attribute 'enumeratedAttribute'
+dn: olcDatamorphAttribute=enumeratedAttribute,olcOverlay={x}datamorph,$DATABASE
+objectClass: olcDatamorphEnum
+
+# value 'value1' corresponds to 'AQ==' (0x01)
+dn: olcDatamorphValue=value1,olcDatamorphAttribute={0}enumeratedAttribute,olcOv
+ erlay={x}datamorph,$DATABASE
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 1
+
+# value 'value11' corresponds to 'Cw==' (0x0B)
+dn: olcDatamorphValue=value11,olcDatamorphAttribute={0}enumeratedAttribute,olcO
+ verlay={x}datamorph,$DATABASE
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 11
+
+# handle attribute 'signedInteger' as a 2-byte signed integer with values
+# between -20000 and 30000 (inclusive on both sides)
+dn: olcDatamorphAttribute=signedInteger,olcOverlay={x}datamorph,$DATABASE
+objectclass: olcDatamorphInteger
+olcDatamorphIntegerBytes: 2
+olcDatamorphIntegerSigned: TRUE
+olcDatamorphIntegerLowerBound: -20000
+olcDatamorphIntegerUpperBound: 30000
+
+# handle attribute 'shortInteger' as a 1-byte unsigned integer with only values
+# 0 and 1 allowed (effectively a true/false)
+dn: olcDatamorphAttribute=shortInteger,olcOverlay={x}datamorph,$DATABASE
+objectclass: olcDatamorphInteger
+olcDatamorphIntegerBytes: 1
+olcDatamorphIntegerUpperBound: 1
+olcDatamorphIntegerSigned: FALSE
+.fi
+
+The
+.BR slapd.conf (5)
+equivalent of the above follows:
+
+.nf
+overlay datamorph
+
+datamorph enum enumeratedAttribute
+datamorph_value 1 value1
+datamorph_value 11 value11
+
+datamorph int signedInteger
+datamorph_size 2
+datamorph_signed TRUE
+datamorph_lower_bound -20000
+datamorph_upper_bound 30000
+
+datamorph int shortInteger
+datamorph_size 1
+datamorph_signed no
+datamorph_upper_bound 1
+.fi
+
+.SH REPLICATION
+
+Given that there are syntaxes and matching rules provided by the overlay, it
+should be configured on each replica to guarantee consistency.
+
+.SH BUGS AND LIMITATIONS
+Due to the fact that overlays are not active in the
+.BR slapcat (8)
+nor
+.BR slapadd (8)
+processes, backups of the database will be made exactly as stored. This means
+that backups made using
+.BR ldapsearch (1)
+cannot be used by
+.BR slapadd (8)
+nor can backups made using
+.BR slapcat (8)
+be loaded using
+.BR ldapadd (8).
+
+Value based ACLs that involve values of the transformed attributes are not
+supported.
+
+The overlay will refuse operations that add or rename entries with any of the
+configured attributes in their RDN.
+
+No controls are explicitly handled in the overlay, attaching any controls that
+reference configured attributes might lead to unexpected behaviour and is
+therefore discouraged.
+
+Increment modification of the configured attributes is not supported either.
+
+If a transformation is configured to be signed yet the attribute's schema uses the
+unsigned syntax and matching rules, inequality matching will not work as
+intended and will treat negative numbers as higher than positive numbers.
+
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.TP
+ETCDIR/slapd.d
+default slapd configuration directory
+.SH SEE ALSO
+.BR slapd-config (5),
+.BR slapd.conf (5),
+.BR slapd.overlays (5),
+.BR slapd (8),
+.BR slapcat (8),
+.BR slapadd (8)
+.SH ACKNOWLEDGEMENTS
+This module was developed in 2016 by Ondřej Kuzník for Symas Corp.
diff --git a/contrib/slapd-modules/datamorph/tests/Rules.mk b/contrib/slapd-modules/datamorph/tests/Rules.mk
new file mode 100644
index 0000000..c25c1d2
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/Rules.mk
@@ -0,0 +1,23 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+.PHONY: test
+
+CLEAN += clients servers tests/progs tests/schema tests/testdata tests/testrun
+
+test: all clients servers tests/progs
+
+test:
+	cd tests; \
+		SRCDIR=$(abspath $(LDAP_SRC)) \
+		LDAP_BUILD=$(abspath $(LDAP_BUILD)) \
+		TOPDIR=$(abspath $(SRCDIR)) \
+		LIBTOOL=$(abspath $(LIBTOOL)) \
+			$(abspath $(SRCDIR))/tests/run all
+
+servers clients tests/progs:
+	ln -s $(abspath $(LDAP_BUILD))/$@ $@
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))
diff --git a/contrib/slapd-modules/datamorph/tests/data/config.ldif b/contrib/slapd-modules/datamorph/tests/data/config.ldif
new file mode 100644
index 0000000..91f2e60
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/config.ldif
@@ -0,0 +1,108 @@
+dn: cn=datamorph,cn=schema,cn=config
+changetype: add
+objectClass: olcSchemaConfig
+olcAttributeTypes: ( 1.3.6.1.4.1.4203.666.11.12.123.1
+  NAME 'enumerated'
+  DESC 'Enumerated attribute'
+  EQUALITY fixedSizeIntegerMatch
+  ORDERING fixedSizeIntegerOrderingMatch
+  SYNTAX 1.3.6.1.4.1.4203.666.11.12.1.2 )
+olcAttributeTypes: ( 1.3.6.1.4.1.4203.666.11.12.123.2
+  NAME 'number'
+  DESC 'Integer attribute'
+  EQUALITY fixedSizeIntegerMatch
+  ORDERING fixedSizeIntegerOrderingMatch
+  SYNTAX 1.3.6.1.4.1.4203.666.11.12.1.3 )
+olcAttributeTypes: ( 1.3.6.1.4.1.4203.666.11.12.123.3
+  NAME 'signed'
+  DESC 'Signed integer attribute'
+  EQUALITY fixedSizeSignedIntegerMatch
+  ORDERING fixedSizeSignedIntegerOrderingMatch
+  SYNTAX 1.3.6.1.4.1.4203.666.11.12.1.4 )
+olcObjectClasses: ( 1.3.6.1.4.1.4203.666.11.12.123.4
+  NAME 'transformedObject'
+  DESC 'Testing objectclass'
+  SUP top AUXILIARY
+  MAY ( enumerated $ number $ signed ) )
+
+dn: olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectClass: olcOverlayConfig
+objectclass: olcDatamorphConfig
+
+# a basic enum
+dn: olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnum
+
+dn: olcDatamorphValue=bjensen,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 1
+
+dn: olcDatamorphValue=bjorn,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 11
+
+dn: olcDatamorphValue=dots,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 12
+
+dn: olcDatamorphValue=jaj,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 13
+
+dn: olcDatamorphValue=jjones,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 14
+
+dn: olcDatamorphValue=jdoe,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 10
+
+dn: olcDatamorphValue=jen,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 101
+
+dn: olcDatamorphValue=johnd,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 20
+
+dn: olcDatamorphValue=melliot,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 51
+
+dn: olcDatamorphValue=uham,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 31
+
+dn: olcDatamorphValue=\5Cno \22name\22,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 200
+
+# an interval
+dn: olcDatamorphAttribute=signed,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphInteger
+olcDatamorphIntegerBytes: 2
+olcDatamorphIntegerSigned: TRUE
+olcDatamorphIntegerLowerBound: -20000
+olcDatamorphIntegerUpperBound: 30000
+
+# an number interval (essentially TRUE/FALSE)
+dn: olcDatamorphAttribute=number,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphInteger
+olcDatamorphIntegerBytes: 1
+olcDatamorphIntegerUpperBound: 1
+olcDatamorphIntegerSigned: FALSE
diff --git a/contrib/slapd-modules/datamorph/tests/data/datamorph.conf b/contrib/slapd-modules/datamorph/tests/data/datamorph.conf
new file mode 100644
index 0000000..7cc4899
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/datamorph.conf
@@ -0,0 +1,49 @@
+overlay datamorph
+
+# they depend on the syntaxes defined by the overlay
+attributetype ( 1.3.6.1.4.1.4203.666.11.12.123.1 NAME 'enumerated'
+    DESC 'Enumerated attribute'
+    EQUALITY fixedSizeIntegerMatch
+    ORDERING fixedSizeIntegerOrderingMatch
+    SYNTAX 1.3.6.1.4.1.4203.666.11.12.1.2 )
+
+attributetype ( 1.3.6.1.4.1.4203.666.11.12.123.2 NAME 'number'
+    DESC 'Integer attribute'
+    EQUALITY fixedSizeIntegerMatch
+    ORDERING fixedSizeIntegerOrderingMatch
+    SYNTAX 1.3.6.1.4.1.4203.666.11.12.1.3 )
+
+attributetype ( 1.3.6.1.4.1.4203.666.11.12.123.3 NAME 'signed'
+    DESC 'Signed integer attribute'
+    EQUALITY fixedSizeSignedIntegerMatch
+    ORDERING fixedSizeSignedIntegerOrderingMatch
+    SYNTAX 1.3.6.1.4.1.4203.666.11.12.1.4 )
+
+objectclass ( 1.3.6.1.4.1.4203.666.11.12.123.4 NAME 'transformedObject'
+    DESC 'Testing objectclass'
+    SUP top AUXILIARY
+    MAY ( enumerated $ number $ signed ) )
+
+datamorph eNuM enumerated
+datamorph_value 1 bjensen
+datamorph_value 11 bjorn
+datamorph_value 12 dots
+datamorph_value "13" jaj
+datamorph_value 14 jjones
+datamorph_value 10 jdoe
+datamorph_value 101 jen
+datamorph_value 20 johnd
+datamorph_value 51 "melliot"
+datamorph_value 31 uham
+datamorph_value 200 "\\no \"name\""
+
+datamorph int signed
+datamorph_size 2
+datamorph_signed TRUE
+datamorph_lower_bound -20000
+datamorph_upper_bound 30000
+
+datamorph iNT number
+datamorph_size 1
+datamorph_signed no
+datamorph_upper_bound 1
diff --git a/contrib/slapd-modules/datamorph/tests/data/test.ldif b/contrib/slapd-modules/datamorph/tests/data/test.ldif
new file mode 100644
index 0000000..67971f3
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test.ldif
@@ -0,0 +1,434 @@
+#LEAD COMMENT
+dn: dc=example,dc=com
+#EMBEDDED COMMENT
+objectClass: top
+objectClass: organization
+objectClass: domainRelatedObject
+objectClass: dcobject
+dc: example
+l: Anytown, Michigan
+st: Michigan
+o: Example, Inc.
+o: EX
+o: Ex.
+description: The Example, Inc. at Anytown
+postalAddress: Example, Inc. $ 535 W. William St. $ Anytown, MI 48109 $ US
+telephoneNumber: +1 313 555 1817
+associatedDomain: example.com
+
+dn: ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+objectClass: extensibleObject
+ou: People
+uidNumber: 0
+gidNumber: 0
+signed:: sm4=
+number:: AA==
+
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+
+dn: ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Alumni Association
+
+dn: ou=Information Technology Division,ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Information Technology Division
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+ ODwoPDgsKDw4PCgsOCwo3Dg8KDw4LCg8ODwoLDgsKow4PCg8OCwoLDg8KCw4LCnw==
+
+dn: cn=All Staff,ou=Groups,dc=example,dc=com
+member: cn=Manager,dc=example,dc=com
+member: cn=Barbara Jensen,ou=Information Technology Division,ou=People,dc=exam
+ ple,dc=com
+member: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=John Doe,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+member: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=James A Jones 2,ou=Information Technology Division,ou=People,dc=exa
+ mple,dc=com
+member: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=exampl
+ e,dc=com
+owner: cn=Manager,dc=example,dc=com
+cn: All Staff
+description: Everyone in the sample data
+objectClass: groupofnames
+
+dn: cn=Alumni Assoc Staff,ou=Groups,dc=example,dc=com
+member: cn=Manager,dc=example,dc=com
+member: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+member: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+owner: cn=Manager,dc=example,dc=com
+description: All Alumni Assoc Staff
+cn: Alumni Assoc Staff
+objectClass: groupofnames
+
+dn: cn=Barbara Jensen,ou=Information Technology Division,ou=People,dc=example,
+ dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Barbara Jensen
+cn: Babs Jensen
+sn:: IEplbnNlbiA=
+uid: bjensen
+title: Mythical Manager, Research Systems
+postalAddress: ITD Prod Dev & Deployment $ 535 W. William St. Room 4212 $ Anyt
+ own, MI 48103-4943
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: YmplbnNlbg==
+mail: bjensen@mailgw.example.com
+homePostalAddress: 123 Wesley $ Anytown, MI 48103
+description: Mythical manager of the rsdd unix project
+drink: water
+homePhone: +1 313 555 2333
+pager: +1 313 555 3233
+facsimileTelephoneNumber: +1 313 555 2274
+telephoneNumber: +1 313 555 9022
+enumerated:: AQ==
+
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+title: Director, Embedded Systems
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+enumerated:: Cw==
+
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Dorothy Stevens
+cn: Dot Stevens
+sn: Stevens
+uid: dots
+title: Secretary, UM Alumni Association
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Lemonade
+homePostalAddress: 377 White St. Apt. 3 $ Anytown, MI 48104
+description: Very tall
+facsimileTelephoneNumber: +1 313 555 3223
+telephoneNumber: +1 313 555 3664
+mail: dots@mail.alumni.example.com
+homePhone: +1 313 555 0454
+enumerated:: DA==
+
+dn: cn=ITD Staff,ou=Groups,dc=example,dc=com
+owner: cn=Manager,dc=example,dc=com
+description: All ITD Staff
+cn: ITD Staff
+objectClass: groupofuniquenames
+uniqueMember: cn=Manager,dc=example,dc=com
+uniqueMember: cn=Bjorn Jensen,OU=Information Technology Division,ou=People,dc=
+ example,dc=com
+uniqueMember: cn=James A Jones 2,ou=Information Technology Division,ou=People,
+ dc=example,dc=com
+uniqueMember: cn=John Doe,ou=Information Technology Division,ou=People,dc=exam
+ ple,dc=com
+
+dn: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: James A Jones 1
+cn: James Jones
+cn: Jim Jones
+sn: Jones
+uid: jaj
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: amFq
+homePostalAddress: 3882 Beverly Rd. $ Anytown, MI 48105
+homePhone: +1 313 555 4772
+description: Outstanding
+title: Mad Cow Researcher, UM Alumni Association
+pager: +1 313 555 3923
+mail: jaj@mail.alumni.example.com
+facsimileTelephoneNumber: +1 313 555 4332
+telephoneNumber: +1 313 555 0895
+enumerated:: DQ==
+
+dn: cn=James A Jones 2,ou=Information Technology Division,ou=People,dc=example
+ ,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: James A Jones 2
+cn: James Jones
+cn: Jim Jones
+sn: Doe
+uid: jjones
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 933 Brooks $ Anytown, MI 48104
+homePhone: +1 313 555 8838
+title: Senior Manager, Information Technology Division
+description: Not around very much
+mail: jjones@mailgw.example.com
+postalAddress: Info Tech Division $ 535 W William $ Anytown, MI 48103
+pager: +1 313 555 2833
+facsimileTelephoneNumber: +1 313 555 8688
+telephoneNumber: +1 313 555 7334
+enumerated:: Dg==
+
+dn: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Jane Doe
+cn: Jane Alverson
+sn: Doe
+uid: jdoe
+title: Programmer Analyst, UM Alumni Association
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 123 Anystreet $ Anytown, MI 48104
+drink: diet coke
+description: Enthusiastic
+mail: jdoe@woof.net
+homePhone: +1 313 555 5445
+pager: +1 313 555 1220
+facsimileTelephoneNumber: +1 313 555 2311
+telephoneNumber: +1 313 555 4774
+enumerated:: Cg==
+
+dn: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Jennifer Smith
+cn: Jen Smith
+sn: Smith
+uid: jen
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Sam Adams
+homePostalAddress: 1000 Maple #44 $ Anytown, MI 48103
+title: Telemarketer, UM Alumni Association
+mail: jen@mail.alumni.example.com
+homePhone: +1 313 555 2333
+pager: +1 313 555 6442
+facsimileTelephoneNumber: +1 313 555 2756
+telephoneNumber: +1 313 555 8232
+enumerated:: ZQ==
+
+dn: cn=John Doe,ou=Information Technology Division,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: John Doe
+cn: Jonathon Doe
+sn: Doe
+uid: johnd
+postalAddress: ITD $ 535 W. William $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 912 East Bllvd $ Anytown, MI 48104
+title: System Administrator, Information Technology Division
+description: overworked!
+mail: johnd@mailgw.example.com
+homePhone: +1 313 555 3774
+pager: +1 313 555 6573
+facsimileTelephoneNumber: +1 313 555 4544
+telephoneNumber: +1 313 555 9394
+enumerated:: FA==
+
+dn: cn=Manager,dc=example,dc=com
+objectClass: person
+cn: Manager
+cn: Directory Manager
+cn: Dir Man
+sn: Manager
+description: Manager of the directory
+userPassword:: c2VjcmV0
+
+dn: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Mark Elliot
+cn: Mark A Elliot
+sn: Elliot
+uid: melliot
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 199 Outer Drive $ Ypsilanti, MI 48198
+homePhone: +1 313 555 0388
+drink: Gasoline
+title: Director, UM Alumni Association
+mail: melliot@mail.alumni.example.com
+pager: +1 313 555 7671
+facsimileTelephoneNumber: +1 313 555 7762
+telephoneNumber: +1 313 555 4177
+enumerated:: Mw==
+
+dn: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Ursula Hampster
+sn: Hampster
+uid: uham
+title: Secretary, UM Alumni Association
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 123 Anystreet $ Anytown, MI 48104
+mail: uham@mail.alumni.example.com
+homePhone: +1 313 555 8421
+pager: +1 313 555 2844
+facsimileTelephoneNumber: +1 313 555 9700
+telephoneNumber: +1 313 555 5331
+enumerated:: Hw==
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test001-01-same-attr.ldif b/contrib/slapd-modules/datamorph/tests/data/test001-01-same-attr.ldif
new file mode 100644
index 0000000..b9ba88f
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test001-01-same-attr.ldif
@@ -0,0 +1,3 @@
+dn: olcDatamorphAttribute=enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnum
diff --git a/contrib/slapd-modules/datamorph/tests/data/test001-02-same-index.ldif b/contrib/slapd-modules/datamorph/tests/data/test001-02-same-index.ldif
new file mode 100644
index 0000000..1dac5dc
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test001-02-same-index.ldif
@@ -0,0 +1,4 @@
+dn: olcDatamorphValue=nope,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 1
diff --git a/contrib/slapd-modules/datamorph/tests/data/test001-02a-same-index.ldif b/contrib/slapd-modules/datamorph/tests/data/test001-02a-same-index.ldif
new file mode 100644
index 0000000..f31ab0a
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test001-02a-same-index.ldif
@@ -0,0 +1,4 @@
+dn: olcDatamorphValue={0}bjensen,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 11
diff --git a/contrib/slapd-modules/datamorph/tests/data/test001-03-invalid-attr.ldif b/contrib/slapd-modules/datamorph/tests/data/test001-03-invalid-attr.ldif
new file mode 100644
index 0000000..01f21c2
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test001-03-invalid-attr.ldif
@@ -0,0 +1,3 @@
+dn: olcDatamorphAttribute=uid,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnum
diff --git a/contrib/slapd-modules/datamorph/tests/data/test002-config.ldif b/contrib/slapd-modules/datamorph/tests/data/test002-config.ldif
new file mode 100644
index 0000000..2aed906
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test002-config.ldif
@@ -0,0 +1,9 @@
+dn: olcDatamorphValue=gjensen,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcDatamorphEnumValue
+olcDatamorphIndex: 55
+
+dn: olcDatamorphAttribute={1}signed,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+delete: olcDatamorphIntegerUpperBound
+olcDatamorphIntegerUpperBound: 30000
diff --git a/contrib/slapd-modules/datamorph/tests/data/test002-entry.ldif b/contrib/slapd-modules/datamorph/tests/data/test002-entry.ldif
new file mode 100644
index 0000000..0df14c4
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test002-entry.ldif
@@ -0,0 +1,31 @@
+dn: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=
+ com
+changetype: add
+objectClass: testPerson
+objectClass: transformedObject
+cn: Gern Jensen
+sn: Jensen
+uid: gjensen
+title: Chief Investigator, ITD
+postalAddress: ITD $ 535 W. William St $ Anytown, MI 48103
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Coffee
+homePostalAddress: 844 Brown St. Apt. 4 $ Anytown, MI 48104
+description: Very odd
+facsimileTelephonenumber: +1 313 555 7557
+telephoneNumber: +1 313 555 8343
+mail: gjensen@mailgw.example.com
+homePhone: +1 313 555 8844
+testTime: 20050304001801.234Z
+enumerated: gjensen
+
+dn: ou=New Unit,dc=example,dc=com
+changetype: add
+objectClass: organizationalUnit
+objectClass: extensibleObject
+ou: New Unit
+uidNumber: 32345
+gidNumber: 1
+signed: 32345
+number: 1
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test002-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test002-fail.ldif
new file mode 100644
index 0000000..f834997
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test002-fail.ldif
@@ -0,0 +1,23 @@
+dn: uid=bjensen+cn=Barbara Jensen+enumerated=bjensen,ou=Information Technology Division,ou=People,dc=example,
+ dc=com
+changetype: add
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Barbara Jensen
+cn: Babs Jensen
+sn:: IEplbnNlbiA=
+uid: bjensen
+title: Mythical Manager, Research Systems
+postalAddress: ITD Prod Dev & Deployment $ 535 W. William St. Room 4212 $ Anyt
+ own, MI 48103-4943
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: YmplbnNlbg==
+mail: bjensen@mailgw.example.com
+homePostalAddress: 123 Wesley $ Anytown, MI 48103
+description: Mythical manager of the rsdd unix project
+drink: water
+homePhone: +1 313 555 2333
+pager: +1 313 555 3233
+facsimileTelephoneNumber: +1 313 555 2274
+telephoneNumber: +1 313 555 9022
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test002-transformed-rdn.ldif b/contrib/slapd-modules/datamorph/tests/data/test002-transformed-rdn.ldif
new file mode 100644
index 0000000..cbcb14a
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test002-transformed-rdn.ldif
@@ -0,0 +1,5 @@
+dn: ou=New Unit,dc=www+number=1,dc=example,dc=com
+changetype: add
+objectClass: organizationalUnit
+ou: New Unit
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test003-config.ldif b/contrib/slapd-modules/datamorph/tests/data/test003-config.ldif
new file mode 100644
index 0000000..f74717c
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test003-config.ldif
@@ -0,0 +1,30 @@
+dn: olcDatamorphValue={2}dots,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 110
+
+dn: olcDatamorphValue={3}jaj,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 12
+
+dn: olcDatamorphValue={4}jjones,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 13
+
+dn: olcDatamorphValue={2}dots,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 14
+
+dn: olcDatamorphAttribute={1}signed,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIntegerSigned
+olcDatamorphIntegerSigned: FALSE
+-
+replace: olcDatamorphIntegerUpperBound
+olcDatamorphIntegerUpperBound: 50000
+-
+replace: olcDatamorphIntegerLowerBound
+olcDatamorphIntegerLowerBound: 50
diff --git a/contrib/slapd-modules/datamorph/tests/data/test003-out.ldif b/contrib/slapd-modules/datamorph/tests/data/test003-out.ldif
new file mode 100644
index 0000000..3dbd8bc
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test003-out.ldif
@@ -0,0 +1,125 @@
+# List regular entries
+dn: dc=example,dc=com
+objectClass: top
+objectClass: organization
+objectClass: domainRelatedObject
+objectClass: dcobject
+dc: example
+l: Anytown, Michigan
+st: Michigan
+o: Example, Inc.
+o: EX
+o: Ex.
+description: The Example, Inc. at Anytown
+postalAddress: Example, Inc. $ 535 W. William St. $ Anytown, MI 48109 $ US
+telephoneNumber: +1 313 555 1817
+associatedDomain: example.com
+
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+
+
+# List entries with transformed attributes
+dn: cn=John Doe,ou=Information Technology Division,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: John Doe
+cn: Jonathon Doe
+sn: Doe
+uid: johnd
+postalAddress: ITD $ 535 W. William $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 912 East Bllvd $ Anytown, MI 48104
+title: System Administrator, Information Technology Division
+description: overworked!
+mail: johnd@mailgw.example.com
+homePhone: +1 313 555 3774
+pager: +1 313 555 6573
+facsimileTelephoneNumber: +1 313 555 4544
+telephoneNumber: +1 313 555 9394
+enumerated: johnd
+
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+title: Director, Embedded Systems
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+enumerated: bjorn
+
+dn: cn=Barbara Jensen,ou=Information Technology Division,ou=People,dc=example,
+ dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Barbara Jensen
+cn: Babs Jensen
+sn:: IEplbnNlbiA=
+uid: bjensen
+title: Mythical Manager, Research Systems
+postalAddress: ITD Prod Dev & Deployment $ 535 W. William St. Room 4212 $ Anyt
+ own, MI 48103-4943
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: YmplbnNlbg==
+mail: bjensen@mailgw.example.com
+homePostalAddress: 123 Wesley $ Anytown, MI 48103
+description: Mythical manager of the rsdd unix project
+drink: water
+homePhone: +1 313 555 2333
+pager: +1 313 555 3233
+facsimileTelephoneNumber: +1 313 555 2274
+telephoneNumber: +1 313 555 9022
+enumerated: bjensen
+
+dn: cn=James A Jones 2,ou=Information Technology Division,ou=People,dc=example
+ ,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: James A Jones 2
+cn: James Jones
+cn: Jim Jones
+sn: Doe
+uid: jjones
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 933 Brooks $ Anytown, MI 48104
+homePhone: +1 313 555 8838
+title: Senior Manager, Information Technology Division
+description: Not around very much
+mail: jjones@mailgw.example.com
+postalAddress: Info Tech Division $ 535 W William $ Anytown, MI 48103
+pager: +1 313 555 2833
+facsimileTelephoneNumber: +1 313 555 8688
+telephoneNumber: +1 313 555 7334
+enumerated: jjones
+
+
+# Search for transformed attributes listing only those
+dn: ou=People,dc=example,dc=com
+signed: -19858
+
+dn: cn=Barbara Jensen,ou=Information Technology Division,ou=People,dc=example,
+ dc=com
+enumerated: bjensen
+
+
+# Search for transformed attributes after reconfiguring mapping
+dn: ou=People,dc=example,dc=com
+signed: 45678
+
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+enumerated: jaj
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-01-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-01-fail.ldif
new file mode 100644
index 0000000..694aacc
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-01-fail.ldif
@@ -0,0 +1,5 @@
+# invalid enum value
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+replace: enumerated
+enumerated: 2dots
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-02-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-02-fail.ldif
new file mode 100644
index 0000000..1ce687f
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-02-fail.ldif
@@ -0,0 +1,5 @@
+# enums are case sensitive
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+replace: enumerated
+enumerated: Dots
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-03-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-03-fail.ldif
new file mode 100644
index 0000000..54bb9b5
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-03-fail.ldif
@@ -0,0 +1,5 @@
+# value does not exist in entry
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+delete: enumerated
+enumerated: uham
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-03a-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-03a-fail.ldif
new file mode 100644
index 0000000..601d895
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-03a-fail.ldif
@@ -0,0 +1,5 @@
+# value does not exist in entry
+dn: ou=People,dc=example,dc=com
+changetype: modify
+delete: signed
+signed: 2
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-04-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-04-fail.ldif
new file mode 100644
index 0000000..d97effc
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-04-fail.ldif
@@ -0,0 +1,10 @@
+# a value outside the bounds
+dn: ou=People,dc=example,dc=com
+changetype: modify
+replace: signed
+signed: 2
+-
+replace: number
+number: -1
+-
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-04a-fail.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-04a-fail.ldif
new file mode 100644
index 0000000..63b3263
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-04a-fail.ldif
@@ -0,0 +1,6 @@
+# a value outside the bounds
+dn: ou=People,dc=example,dc=com
+changetype: modify
+replace: signed
+signed: 32000
+-
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-changes.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-changes.ldif
new file mode 100644
index 0000000..17a72da
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-changes.ldif
@@ -0,0 +1,30 @@
+dn: ou=People,dc=example,dc=com
+changetype: modify
+replace: signed
+signed: -1
+-
+replace: number
+number: 1
+-
+
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+replace: enumerated
+enumerated: jaj
+-
+
+dn: cn=Barbara Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+changetype: modify
+add: enumerated
+enumerated: bjorn
+enumerated: uham
+-
+
+dn: cn=John Doe,ou=Information Technology Division,ou=People,dc=example,dc=com
+changetype: modify
+delete: enumerated
+enumerated: johnd
+-
+add: enumerated
+enumerated: melliot
+-
diff --git a/contrib/slapd-modules/datamorph/tests/data/test005-out.ldif b/contrib/slapd-modules/datamorph/tests/data/test005-out.ldif
new file mode 100644
index 0000000..4c8c360
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test005-out.ldif
@@ -0,0 +1,212 @@
+# Test1: list entries that should have been changed by ldapmodify
+dn: ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+objectClass: extensibleObject
+ou: People
+uidNumber: 0
+gidNumber: 0
+signed: -1
+number: 1
+
+dn: cn=Barbara Jensen,ou=Information Technology Division,ou=People,dc=example,
+ dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Barbara Jensen
+cn: Babs Jensen
+sn:: IEplbnNlbiA=
+uid: bjensen
+title: Mythical Manager, Research Systems
+postalAddress: ITD Prod Dev & Deployment $ 535 W. William St. Room 4212 $ Anyt
+ own, MI 48103-4943
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: YmplbnNlbg==
+mail: bjensen@mailgw.example.com
+homePostalAddress: 123 Wesley $ Anytown, MI 48103
+description: Mythical manager of the rsdd unix project
+drink: water
+homePhone: +1 313 555 2333
+pager: +1 313 555 3233
+facsimileTelephoneNumber: +1 313 555 2274
+telephoneNumber: +1 313 555 9022
+enumerated: bjensen
+enumerated: bjorn
+enumerated: uham
+
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+title: Director, Embedded Systems
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+enumerated: bjorn
+
+dn: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Dorothy Stevens
+cn: Dot Stevens
+sn: Stevens
+uid: dots
+title: Secretary, UM Alumni Association
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Lemonade
+homePostalAddress: 377 White St. Apt. 3 $ Anytown, MI 48104
+description: Very tall
+facsimileTelephoneNumber: +1 313 555 3223
+telephoneNumber: +1 313 555 3664
+mail: dots@mail.alumni.example.com
+homePhone: +1 313 555 0454
+enumerated: jaj
+
+dn: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: James A Jones 1
+cn: James Jones
+cn: Jim Jones
+sn: Jones
+uid: jaj
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: amFq
+homePostalAddress: 3882 Beverly Rd. $ Anytown, MI 48105
+homePhone: +1 313 555 4772
+description: Outstanding
+title: Mad Cow Researcher, UM Alumni Association
+pager: +1 313 555 3923
+mail: jaj@mail.alumni.example.com
+facsimileTelephoneNumber: +1 313 555 4332
+telephoneNumber: +1 313 555 0895
+enumerated: jaj
+
+dn: cn=James A Jones 2,ou=Information Technology Division,ou=People,dc=example
+ ,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: James A Jones 2
+cn: James Jones
+cn: Jim Jones
+sn: Doe
+uid: jjones
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 933 Brooks $ Anytown, MI 48104
+homePhone: +1 313 555 8838
+title: Senior Manager, Information Technology Division
+description: Not around very much
+mail: jjones@mailgw.example.com
+postalAddress: Info Tech Division $ 535 W William $ Anytown, MI 48103
+pager: +1 313 555 2833
+facsimileTelephoneNumber: +1 313 555 8688
+telephoneNumber: +1 313 555 7334
+enumerated: jjones
+
+dn: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Jane Doe
+cn: Jane Alverson
+sn: Doe
+uid: jdoe
+title: Programmer Analyst, UM Alumni Association
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 123 Anystreet $ Anytown, MI 48104
+drink: diet coke
+description: Enthusiastic
+mail: jdoe@woof.net
+homePhone: +1 313 555 5445
+pager: +1 313 555 1220
+facsimileTelephoneNumber: +1 313 555 2311
+telephoneNumber: +1 313 555 4774
+enumerated: jdoe
+
+dn: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Jennifer Smith
+cn: Jen Smith
+sn: Smith
+uid: jen
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Sam Adams
+homePostalAddress: 1000 Maple #44 $ Anytown, MI 48103
+title: Telemarketer, UM Alumni Association
+mail: jen@mail.alumni.example.com
+homePhone: +1 313 555 2333
+pager: +1 313 555 6442
+facsimileTelephoneNumber: +1 313 555 2756
+telephoneNumber: +1 313 555 8232
+enumerated: jen
+
+dn: cn=John Doe,ou=Information Technology Division,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: John Doe
+cn: Jonathon Doe
+sn: Doe
+uid: johnd
+postalAddress: ITD $ 535 W. William $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 912 East Bllvd $ Anytown, MI 48104
+title: System Administrator, Information Technology Division
+description: overworked!
+mail: johnd@mailgw.example.com
+homePhone: +1 313 555 3774
+pager: +1 313 555 6573
+facsimileTelephoneNumber: +1 313 555 4544
+telephoneNumber: +1 313 555 9394
+enumerated: melliot
+
+dn: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Mark Elliot
+cn: Mark A Elliot
+sn: Elliot
+uid: melliot
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 199 Outer Drive $ Ypsilanti, MI 48198
+homePhone: +1 313 555 0388
+drink: Gasoline
+title: Director, UM Alumni Association
+mail: melliot@mail.alumni.example.com
+pager: +1 313 555 7671
+facsimileTelephoneNumber: +1 313 555 7762
+telephoneNumber: +1 313 555 4177
+enumerated: melliot
+
+dn: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+objectClass: transformedObject
+cn: Ursula Hampster
+sn: Hampster
+uid: uham
+title: Secretary, UM Alumni Association
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 123 Anystreet $ Anytown, MI 48104
+mail: uham@mail.alumni.example.com
+homePhone: +1 313 555 8421
+pager: +1 313 555 2844
+facsimileTelephoneNumber: +1 313 555 9700
+telephoneNumber: +1 313 555 5331
+enumerated: uham
+
diff --git a/contrib/slapd-modules/datamorph/tests/data/test007-config.ldif b/contrib/slapd-modules/datamorph/tests/data/test007-config.ldif
new file mode 100644
index 0000000..3820831
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/data/test007-config.ldif
@@ -0,0 +1,30 @@
+dn: olcDatamorphValue={2}dots,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 110
+
+dn: olcDatamorphValue={4}jjones,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 14
+
+dn: olcDatamorphValue={3}jaj,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 13
+
+dn: olcDatamorphValue={2}dots,olcDatamorphAttribute={0}enumerated,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIndex
+olcDatamorphIndex: 12
+
+dn: olcDatamorphAttribute={1}signed,olcOverlay={0}datamorph,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcDatamorphIntegerSigned
+olcDatamorphIntegerSigned: TRUE
+-
+replace: olcDatamorphIntegerLowerBound
+olcDatamorphIntegerLowerBound: -20000
+-
+replace: olcDatamorphIntegerUpperBound
+olcDatamorphIntegerUpperBound: 30000
diff --git a/contrib/slapd-modules/datamorph/tests/run b/contrib/slapd-modules/datamorph/tests/run
new file mode 100755
index 0000000..6a38431
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/run
@@ -0,0 +1,229 @@
+#!/bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+USAGE="$0 [-b <backend>] [-c] [-k] [-l #] [-p] [-s {ro|rp}] [-u] [-w] <script>"
+
+TOPSRCDIR="${SRCDIR-$LDAP_SRC}"
+SRCDIR="${TOPSRCDIR}/tests"
+eval `grep EGREP_CMD= ${LDAP_BUILD}/tests/run`
+eval `$EGREP_CMD -e '^LN_S=' ${LDAP_BUILD}/tests/run`
+
+export SRCDIR TOPSRCDIR LN_S EGREP_CMD
+
+. "${SRCDIR}/scripts/defines.sh"
+
+BACKEND=
+CLEAN=no
+WAIT=0
+KILLSERVERS=yes
+PRESERVE=${PRESERVE-no}
+SYNCMODE=${SYNCMODE-rp}
+USERDATA=no
+LOOP=1
+COUNTER=1
+
+while test $# -gt 0 ; do
+	case "$1" in
+		-b | -backend)
+			BACKEND="$2"
+			shift; shift ;;
+
+		-c | -clean)
+			CLEAN=yes
+			shift ;;
+
+		-k | -kill)
+			KILLSERVERS=no
+			shift ;;
+		-l | -loop)
+			NUM="`echo $2 | sed 's/[0-9]//g'`"
+			if [ -z "$NUM" ]; then
+				LOOP=$2
+			else
+				echo "Loop variable not an int: $2"
+				echo "$USAGE"; exit 1
+			fi
+			shift ;
+			shift ;;
+
+		-p | -preserve)
+			PRESERVE=yes
+			shift ;;
+
+		-s | -syncmode)
+			case "$2" in
+				ro | rp)
+					SYNCMODE="$2"
+					;;
+				*)
+					echo "unknown sync mode $2"
+					echo "$USAGE"; exit 1
+					;;
+			esac
+			shift; shift ;;
+
+		-u | -userdata)
+			USERDATA=yes
+			shift ;;
+
+		-w | -wait)
+			WAIT=1
+			shift ;;
+
+		-)
+			shift
+			break ;;
+
+		-*)
+			echo "$USAGE"; exit 1
+			;;
+
+		*)
+			break ;;
+	esac
+done
+
+eval `$EGREP_CMD -e '^AC' ${LDAP_BUILD}/tests/run`
+export `$EGREP_CMD -e '^AC' ${LDAP_BUILD}/tests/run | sed 's/=.*//'`
+
+if test -z "$BACKEND" ; then
+	for b in mdb ; do
+		if eval "test \"\$AC_$b\" != no" ; then
+			BACKEND=$b
+			break
+		fi
+	done
+	if test -z "$BACKEND" ; then
+		echo "No suitable default database backend configured" >&2
+		exit 1
+	fi
+fi
+
+BACKENDTYPE=`eval 'echo $AC_'$BACKEND`
+if test "x$BACKENDTYPE" = "x" ; then
+	BACKENDTYPE="unknown"
+fi
+
+# Backend features.  indexdb: indexing and unchecked limit.
+# maindb: main storage backend.  Currently index,limits,mode,paged results.
+INDEXDB=noindexdb MAINDB=nomaindb
+case $BACKEND in
+	mdb) INDEXDB=indexdb MAINDB=maindb ;;
+	ndb) INDEXDB=indexdb ;;
+esac
+
+export	BACKEND BACKENDTYPE INDEXDB MAINDB \
+	WAIT KILLSERVERS PRESERVE SYNCMODE USERDATA \
+	SRCDIR
+
+if test $# = 0 ; then
+	echo "$USAGE"; exit 1
+fi
+
+# need defines.sh for the definitions of the directories
+. $SRCDIR/scripts/defines.sh
+
+SCRIPTDIR="${TOPDIR}/tests/scripts"
+
+export SCRIPTDIR
+
+SCRIPTNAME="$1"
+shift
+
+if test -x "${SCRIPTDIR}/${SCRIPTNAME}" ; then
+	SCRIPT="${SCRIPTDIR}/${SCRIPTNAME}"
+elif test -x "`echo ${SCRIPTDIR}/test*-${SCRIPTNAME}`"; then
+	SCRIPT="`echo ${SCRIPTDIR}/test*-${SCRIPTNAME}`"
+elif test -x "`echo ${SCRIPTDIR}/${SCRIPTNAME}-*`"; then
+	SCRIPT="`echo ${SCRIPTDIR}/${SCRIPTNAME}-*`"
+else
+	echo "run: ${SCRIPTNAME} not found (or not executable)"
+	exit 1;
+fi
+
+if test ! -r ${DATADIR}/test.ldif ; then
+	${LN_S} ${SRCDIR}/data ${DATADIR}
+fi
+if test ! -r ${SCHEMADIR}/core.schema ; then
+	${LN_S} ${TOPSRCDIR}/servers/slapd/schema ${SCHEMADIR}
+fi
+if test ! -r ./data; then
+	${LN_S} ${TOPDIR}/tests/data ./
+fi
+
+if test -d ${TESTDIR} ; then
+	if test $PRESERVE = no ; then
+		echo "Cleaning up test run directory leftover from previous run."
+		/bin/rm -rf ${TESTDIR}
+	elif test $PRESERVE = yes ; then
+		echo "Cleaning up only database directories leftover from previous run."
+		/bin/rm -rf ${TESTDIR}/db.*
+	fi
+fi
+if test $BACKEND = ndb ; then
+	mysql --user root <<EOF
+	drop database if exists db_1;
+	drop database if exists db_2;
+	drop database if exists db_3;
+	drop database if exists db_4;
+	drop database if exists db_5;
+	drop database if exists db_6;
+EOF
+fi
+mkdir -p ${TESTDIR}
+
+if test $USERDATA = yes ; then
+	if test ! -d userdata ; then
+		echo "User data directory (userdata) does not exist."
+		exit 1
+	fi
+	cp -R userdata/* ${TESTDIR}
+fi
+
+# disable LDAP initialization
+LDAPNOINIT=true; export LDAPNOINIT
+
+echo "Running ${SCRIPT} for ${BACKEND}..."
+while [ $COUNTER -le $LOOP ]; do
+	if [ $LOOP -gt 1 ]; then
+		echo "Running $COUNTER of $LOOP iterations"
+	fi
+	$SCRIPT $*
+	RC=$?
+
+	if test $CLEAN = yes ; then
+		echo "Cleaning up test run directory from this run."
+		/bin/rm -rf ${TESTDIR}
+		echo "Cleaning up symlinks."
+		/bin/rm -f ${DATADIR} ${SCHEMADIR}
+	fi
+
+	if [ $RC -ne 0 ]; then
+		if [ $LOOP -gt 1 ]; then
+			echo "Failed after $COUNTER of $LOOP iterations"
+		fi
+		exit $RC
+	else
+		COUNTER=`expr $COUNTER + 1`
+		if [ $COUNTER -le $LOOP ]; then
+			echo "Cleaning up test run directory from this run."
+			/bin/rm -rf ${TESTDIR}
+		fi
+	fi
+done
+exit $RC
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/all b/contrib/slapd-modules/datamorph/tests/scripts/all
new file mode 100755
index 0000000..d6d6dc7
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/all
@@ -0,0 +1,102 @@
+#! /bin/sh
+# $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+
+. $SRCDIR/scripts/defines.sh
+
+TB="" TN=""
+if test -t 1 ; then
+	TB=`$SHTOOL echo -e "%B" 2>/dev/null`
+	TN=`$SHTOOL echo -e "%b" 2>/dev/null`
+fi
+
+FAILCOUNT=0
+SKIPCOUNT=0
+SLEEPTIME=10
+
+echo ">>>>> Executing all LDAP tests for $BACKEND"
+
+if [ -n "$NOEXIT" ]; then
+	echo "Result	Test" > $TESTWD/results
+fi
+
+for CMD in ${SCRIPTDIR}/test*; do
+	case "$CMD" in
+		*~)		continue;;
+		*.bak)	continue;;
+		*.orig)	continue;;
+		*.sav)	continue;;
+		*)		test -f "$CMD" || continue;;
+	esac
+
+	# remove cruft from prior test
+	if test $PRESERVE = yes ; then
+		/bin/rm -rf $TESTDIR/db.*
+	else
+		/bin/rm -rf $TESTDIR
+	fi
+	if test $BACKEND = ndb ; then
+		mysql --user root <<EOF
+		drop database if exists db_1;
+		drop database if exists db_2;
+		drop database if exists db_3;
+		drop database if exists db_4;
+		drop database if exists db_5;
+		drop database if exists db_6;
+EOF
+	fi
+
+	BCMD=`basename $CMD`
+	if [ -x "$CMD" ]; then
+		echo ">>>>> Starting ${TB}$BCMD${TN} for $BACKEND..."
+		$CMD
+		RC=$?
+		if test $RC -eq 0 ; then
+			echo ">>>>> $BCMD completed ${TB}OK${TN} for $BACKEND."
+		else
+			echo ">>>>> $BCMD ${TB}failed${TN} for $BACKEND"
+			FAILCOUNT=`expr $FAILCOUNT + 1`
+
+			if [ -n "$NOEXIT" ]; then
+				echo "Continuing."
+			else
+				echo "(exit $RC)"
+				exit $RC
+			fi
+		fi
+	else
+		echo ">>>>> Skipping ${TB}$BCMD${TN} for $BACKEND."
+		SKIPCOUNT=`expr $SKIPCOUNT + 1`
+		RC="-"
+	fi
+
+	if [ -n "$NOEXIT" ]; then
+		echo "$RC	$BCMD" >> $TESTWD/results
+	fi
+
+#	echo ">>>>> waiting $SLEEPTIME seconds for things to exit"
+#	sleep $SLEEPTIME
+	echo ""
+done
+
+if [ -n "$NOEXIT" ]; then
+	if [ "$FAILCOUNT" -gt 0 ]; then
+		cat $TESTWD/results
+		echo "$FAILCOUNT tests for $BACKEND ${TB}failed${TN}. Please review the test log."
+	else
+		echo "All executed tests for $BACKEND ${TB}succeeded${TN}."
+	fi
+fi
+
+echo "$SKIPCOUNT tests for $BACKEND were ${TB}skipped${TN}."
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/common.sh b/contrib/slapd-modules/datamorph/tests/scripts/common.sh
new file mode 100755
index 0000000..a468732
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/common.sh
@@ -0,0 +1,152 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+OVERLAY_CONFIG=${OVERLAY_CONFIG-data/config.ldif}
+
+mkdir -p $TESTDIR $DBDIR1
+
+mkdir $TESTDIR/confdir
+. $CONFFILTER $BACKEND $MONITORDB < $CONF > $CONF1
+
+$SLAPPASSWD -g -n >$CONFIGPWF
+echo "database config" >>$CONF1
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF1
+
+echo "Starting slapd on TCP/IP port $PORT1 for configuration..."
+$SLAPD -f $CONF1 -F $TESTDIR/confdir -h $URI1 -d $LVL > $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+$LDAPSEARCH -D cn=config -H $URI1 -y $CONFIGPWF \
+	-s base -b 'cn=module{0},cn=config' 1.1 >$TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module{0},cn=config
+changetype: modify
+add: olcModuleLoad
+olcModuleLoad: `pwd`/../datamorph.la
+EOMOD
+	;;
+32)
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: `pwd`/../datamorph.la
+EOMOD
+	;;
+*)
+	echo "Failed testing for module load entry"
+	exit $RC;
+	;;
+esac
+
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Loading test datamorph configuration..."
+. $CONFFILTER $BACKEND $MONITORDB < $OVERLAY_CONFIG | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+if test $INDEXDB = indexdb ; then
+	echo "Configure indexing for transformed attributes..."
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+		>> $TESTOUT 2>&1 <<EOMOD
+dn: olcDatabase={1}$BACKEND,cn=config
+changetype: modify
+add: olcDbIndex
+olcDbIndex: enumerated pres,eq
+olcDbIndex: number pres,eq
+olcDbIndex: signed pres,eq
+EOMOD
+	RC=$?
+	if test $RC != 0 ; then
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+	fi
+else
+	echo "Skipping indexing setup for this database"
+fi
+
+echo "Stopping slapd on TCP/IP port $PORT1..."
+kill -HUP $KILLPIDS
+KILLPIDS=""
+sleep $SLEEP0
+
+echo "Running slapadd to build slapd database..."
+$SLAPADD -F $TESTDIR/confdir -l data/test.ldif
+RC=$?
+if test $RC != 0 ; then
+	echo "slapadd failed ($RC)!"
+	exit $RC
+fi
+
+echo "Starting slapd on TCP/IP port $PORT1..."
+$SLAPD -F $TESTDIR/confdir -h $URI1 -d $LVL >> $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test001-config b/contrib/slapd-modules/datamorph/tests/scripts/test001-config
new file mode 100755
index 0000000..c4bfdf0
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test001-config
@@ -0,0 +1,248 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Applying invalid changes to config (should fail)..."
+for CHANGE in data/test001-*.ldif; do
+	echo "... $CHANGE"
+	. $CONFFILTER $BACKEND $MONITORDB < $CHANGE | \
+	$LDAPMODIFY -D cn=config -H $URI1 -y $CONFIGPWF \
+		>> $TESTOUT 2>&1
+	RC=$?
+	case $RC in
+	0)
+		echo "ldapmodify should have failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit 1
+		;;
+	80)
+		echo "ldapmodify failed ($RC)"
+		;;
+	*)
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+		;;
+	esac
+done
+
+# We run this search after the changes above and before restart so we can also
+# check the reconfiguration attempts actually had no side effects
+echo "Saving search output before server restart..."
+echo "# search output from dynamically configured server..." >> $SERVER6OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	>> $SERVER6OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Stopping slapd on TCP/IP port $PORT1..."
+kill -HUP $KILLPIDS
+KILLPIDS=""
+sleep $SLEEP0
+echo "Starting slapd on TCP/IP port $PORT1..."
+$SLAPD -F $TESTDIR/confdir -h $URI1 -d $LVL >> $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "Testing slapd.conf support..."
+mkdir $TESTDIR/conftest $DBDIR2
+. $CONFFILTER $BACKEND $MONITORDB < $CONFTWO \
+	| sed -e '/^argsfile.*/a\
+moduleload ../datamorph.la' \
+		-e '/database.*monitor/i\
+include data/datamorph.conf' \
+	> $CONF2
+echo "database config" >>$CONF2
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF2
+
+$SLAPADD -f $CONF2 -l data/test.ldif
+RC=$?
+if test $RC != 0 ; then
+	echo "slapadd failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Starting slapd on TCP/IP port $PORT2..."
+$SLAPD -f $CONF2 -h $URI2 -d $LVL >> $LOG2 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI2 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "# search output from server running from slapd.conf..." >> $SERVER2OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI2 \
+	>> $SERVER2OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Stopping slapd on TCP/IP port $PORT2..."
+kill -HUP $PID
+
+$SLAPD -Tt -f $CONF2 -F $TESTDIR/conftest -d $LVL >> $LOG3 2>&1
+
+echo "Starting slapd on TCP/IP port $PORT2..."
+$SLAPD -F $TESTDIR/conftest -h $URI2 -d $LVL >> $LOG3 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$KILLPIDS $PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI2 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "Gathering overlay configuration from both servers..."
+echo "# overlay configuration from dynamically configured server..." >> $SERVER1OUT
+$LDAPSEARCH -D cn=config -H $URI1 -y $CONFIGPWF \
+	-b "olcOverlay={0}datamorph,olcDatabase={1}$BACKEND,cn=config" \
+	| sed -e "s/ {[0-9]*}/ /" -e "s/={[0-9]*}/=/g" \
+	>> $SERVER1OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "# overlay configuration from server configured from slapd.conf..." >> $SERVER3OUT
+$LDAPSEARCH -D cn=config -H $URI2 -y $CONFIGPWF \
+	-b "olcOverlay={0}datamorph,olcDatabase={1}$BACKEND,cn=config" \
+	| sed -e "s/ {[0-9]*}/ /" -e "s/={[0-9]*}/=/g" \
+	>> $SERVER3OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+# We've already filtered out the ordering markers, now sort the entries
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SERVER3OUT > $SERVER3FLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $SERVER1OUT > $SERVER1FLT
+echo "Comparing filter output..."
+$CMP $SERVER3FLT $SERVER1FLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+rm $SERVER1OUT $SERVER3OUT
+
+echo "Comparing search output on both servers..."
+echo "# search output from dynamically configured server..." >> $SERVER1OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	>> $SERVER1OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "# search output from server configured from slapd.conf..." >> $SERVER3OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI2 \
+	>> $SERVER3OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SERVER1OUT > $SERVER1FLT
+$LDIFFILTER -s e < $SERVER2OUT > $SERVER2FLT
+$LDIFFILTER -s e < $SERVER3OUT > $SERVER3FLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $SERVER6OUT > $SERVER6FLT
+echo "Comparing filter output..."
+$CMP $SERVER6FLT $SERVER1FLT > $CMPOUT && \
+$CMP $SERVER6FLT $SERVER2FLT > $CMPOUT && \
+$CMP $SERVER6FLT $SERVER3FLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test002-add-delete b/contrib/slapd-modules/datamorph/tests/scripts/test002-add-delete
new file mode 100755
index 0000000..f947d09
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test002-add-delete
@@ -0,0 +1,147 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Adding entries (should fail this time)..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-c -f data/test002-entry.ldif >> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+19)
+	echo "ldapmodify failed ($RC)"
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Adding other entries (should fail)..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test002-fail.ldif >> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+19)
+	echo "ldapmodify failed ($RC)"
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test002-transformed-rdn.ldif >> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+32)
+	echo "ldapmodify failed ($RC)"
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Configuring new value..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test002-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Adding some of the entries again..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test002-entry.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Saving search output..."
+$LDAPSEARCH -H $URI1 -b "$BASEDN" \
+	"(|(cn=Gern Jensen)(ou=New Unit))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Removing entry..."
+$LDAPDELETE -D $MANAGERDN -H $URI1 -w $PASSWD \
+	"cn=Gern Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	"ou=New Unit,$BASEDN" \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapdelete failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test002-entry.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s ae < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s ae < $LDIF | grep -v '^changetype:' > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test003-search b/contrib/slapd-modules/datamorph/tests/scripts/test003-search
new file mode 100755
index 0000000..9afe677
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test003-search
@@ -0,0 +1,106 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Testing searches against regular entries..."
+echo "# Testing searches against regular entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 "(|(ou=Groups)(st=*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches listing transformed attributes..."
+echo >> $SEARCHOUT
+echo "# Testing searches listing transformed attributes..." >> $SEARCHOUT
+$LDAPSEARCH -b "ou=Information Technology Division,ou=People,$BASEDN" -s one \
+	-H $URI1 >> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on transformed attributes..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on transformed attributes..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	"(|(enumerated=bjensen)(&(signed=-19858)(signed<=0)(signed>=-20000)))" \
+	enumerated signed \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Reconfiguring transformation definition..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test003-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on the new values..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on the new values..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	"(|(enumerated=not a value)(enumerated=jaj)(&(signed=45678)(!(signed>=50000))(signed>=44444)))" \
+	enumerated signed \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test003-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test004-compare b/contrib/slapd-modules/datamorph/tests/scripts/test004-compare
new file mode 100755
index 0000000..d4b535b
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test004-compare
@@ -0,0 +1,62 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Comparing a regular entry..."
+$LDAPCOMPARE -H $URI1 \
+	"cn=Mark Elliot,ou=Alumni Association,ou=People,$BASEDN" \
+	"cn:Mark Elliot" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+echo "Comparing a transformed enum entry..."
+$LDAPCOMPARE -H $URI1 \
+	"cn=Jane Doe,ou=Alumni Association,ou=People,$BASEDN" \
+	"enumerated:jdoe" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+echo "Comparing a transformed interval entry..."
+$LDAPCOMPARE -H $URI1 "ou=People,$BASEDN" \
+	"signed:-19858" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test005-modify b/contrib/slapd-modules/datamorph/tests/scripts/test005-modify
new file mode 100755
index 0000000..94cf1c0
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test005-modify
@@ -0,0 +1,89 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Modifying entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test005-changes.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Applying invalid changes (should fail)..."
+for CHANGE in data/test005-*fail.ldif; do
+	echo "... $CHANGE"
+	$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+		-f $CHANGE >> $TESTOUT 2>&1
+	RC=$?
+	case $RC in
+	0)
+		echo "ldapmodify should have failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit 1
+		;;
+	16|19)
+		echo "ldapmodify failed ($RC)"
+		;;
+	*)
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+		;;
+	esac
+done
+
+echo "Reading affected entries back..."
+echo "# Reading affected entries back..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	'(|(objectClass=OpenLDAPperson)(ou=people))' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test005-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test006-modrdn b/contrib/slapd-modules/datamorph/tests/scripts/test006-modrdn
new file mode 100755
index 0000000..56e2f2a
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test006-modrdn
@@ -0,0 +1,52 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Renaming an entry to add new value (should fail)..."
+$LDAPMODRDN -D $MANAGERDN -H $URI1 -w $PASSWD \
+	"cn=Mark Elliot,ou=Alumni Association,ou=People,$BASEDN" \
+	"cn=Mark Elliot+enumerated=melliot" \
+	>> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodrdn should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+19)
+	echo "ldapmodrdn failed ($RC)"
+	;;
+*)
+	echo "ldapmodrdn failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test007-transformed-replication b/contrib/slapd-modules/datamorph/tests/scripts/test007-transformed-replication
new file mode 100755
index 0000000..5b2ea4d
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test007-transformed-replication
@@ -0,0 +1,296 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+if test "$SYNCPROV" = syncprovno; then
+	echo "Syncrepl provider overlay not available, test skipped"
+	exit 0
+fi
+
+. ${SCRIPTDIR}/common.sh
+
+if test "$SYNCPROV" = syncprovmod; then
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: $LDAP_BUILD/servers/slapd/overlays/syncprov.la
+EOMOD
+
+	RC=$?
+	if test $RC != 0 ; then
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+	fi
+fi
+
+mkdir $DBDIR4 $TESTDIR/confdir-consumer
+
+echo "Starting consumer slapd on TCP/IP port $PORT4..."
+. $CONFFILTER $BACKEND $MONITORDB < $P1SRCONSUMERCONF > $CONF4
+
+echo "database config" >>$CONF4
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF4
+
+$SLAPD -f $CONF4 -F $TESTDIR/confdir-consumer -h $URI4 -d $LVL > $LOG4 2>&1 &
+CONSUMERPID=$!
+if test $WAIT != 0 ; then
+	echo CONSUMERPID $CONSUMERPID
+	read foo
+fi
+KILLPIDS="$KILLPIDS $CONSUMERPID"
+
+sleep $SLEEP0
+
+echo "Setting up overlay on consumer..."
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: `pwd`/../datamorph.la
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Configuring syncprov on provider..."
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: olcOverlay=syncprov,olcDatabase={1}$BACKEND,cn=config
+changetype: add
+objectclass: olcSyncProvConfig
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < $OVERLAY_CONFIG | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$BASEDN" -H $URI4 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for consumer to start replication..."
+	sleep ${SLEEP1}
+done
+
+echo "Waiting ${SLEEP1} seconds for consumer to finish replicating..."
+sleep ${SLEEP1}
+
+echo "Testing searches against regular replicated entries..."
+echo "# Testing searches against regular replicated entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 "(|(ou=Groups)(st=*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches listing replicated transformed attributes..."
+echo >> $SEARCHOUT
+echo "# Testing searches listing replicated transformed attributes..." >> $SEARCHOUT
+$LDAPSEARCH -b "ou=Information Technology Division,ou=People,$BASEDN" \
+	-s one -H $URI4 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on replicated transformed attributes..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on replicated transformed attributes..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(|(enumerated=bjensen)(&(signed=-19858)(signed<=0)(signed>=-20000)))" \
+	enumerated signed \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Reconfiguring transformation definition..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test003-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < data/test003-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on the new replicated values..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on the new replicated values..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(|(enumerated=not a value)(enumerated=jaj)(&(signed=45678)(!(signed>=50000))(signed>=44444)))" \
+	enumerated signed \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+LDIF=data/test003-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+rm $SEARCHOUT
+
+echo "Reverting part of the above configuration for remainder of the test..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test007-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < data/test007-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Modifying entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test005-changes.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Applying invalid changes (should fail)..."
+for CHANGE in data/test005-*fail.ldif; do
+	echo "... $CHANGE"
+	$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+		-f $CHANGE >> $TESTOUT 2>&1
+	RC=$?
+	case $RC in
+	0)
+		echo "ldapmodify should have failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit 1
+		;;
+	16|19)
+		echo "ldapmodify failed ($RC)"
+		;;
+	*)
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+		;;
+	esac
+done
+
+echo "Waiting ${SLEEP1} seconds for consumer to finish replicating..."
+sleep ${SLEEP1}
+
+echo "Reading affected entries back..."
+echo "# Reading affected entries back..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	'(|(objectClass=OpenLDAPperson)(ou=people))' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test005-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/datamorph/tests/scripts/test008-ignored-replication b/contrib/slapd-modules/datamorph/tests/scripts/test008-ignored-replication
new file mode 100755
index 0000000..a1fcb71
--- /dev/null
+++ b/contrib/slapd-modules/datamorph/tests/scripts/test008-ignored-replication
@@ -0,0 +1,299 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+if test "$SYNCPROV" = syncprovno; then
+	echo "Syncrepl provider overlay not available, test skipped"
+	exit 0
+fi
+
+. ${SCRIPTDIR}/common.sh
+
+if test "$SYNCPROV" = syncprovmod; then
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: $LDAP_BUILD/servers/slapd/overlays/syncprov.la
+EOMOD
+
+	RC=$?
+	if test $RC != 0 ; then
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+	fi
+fi
+
+mkdir $DBDIR4 $TESTDIR/confdir-consumer
+
+echo "Starting consumer slapd on TCP/IP port $PORT4..."
+. $CONFFILTER $BACKEND $MONITORDB < $P1SRCONSUMERCONF > $CONF4
+
+echo "database config" >>$CONF4
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF4
+
+$SLAPD -f $CONF4 -F $TESTDIR/confdir-consumer -h $URI4 -d $LVL > $LOG4 2>&1 &
+CONSUMERPID=$!
+if test $WAIT != 0 ; then
+	echo CONSUMERPID $CONSUMERPID
+	read foo
+fi
+KILLPIDS="$KILLPIDS $CONSUMERPID"
+
+sleep $SLEEP0
+
+echo "Setting up overlay on consumer..."
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: `pwd`/../datamorph.la
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Configuring syncprov on provider..."
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: olcOverlay={0}syncprov,olcDatabase={1}$BACKEND,cn=config
+changetype: add
+objectclass: olcSyncProvConfig
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < $OVERLAY_CONFIG | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$BASEDN" -H $URI4 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for consumer to start replication..."
+	sleep ${SLEEP1}
+done
+
+echo "Waiting ${SLEEP1} seconds for consumer to finish replicating..."
+sleep ${SLEEP1}
+
+echo "Testing searches against regular replicated entries..."
+echo "# Testing searches against regular replicated entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 "(|(ou=Groups)(st=*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches listing replicated transformed attributes..."
+echo >> $SEARCHOUT
+echo "# Testing searches listing replicated transformed attributes..." >> $SEARCHOUT
+$LDAPSEARCH -b "ou=Information Technology Division,ou=People,$BASEDN" -s one \
+	-H $URI4 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on replicated transformed attributes..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on replicated transformed attributes..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(|(enumerated=bjensen)(&(signed=-19858)(signed<=0)(signed>=-20000)))" \
+	enumerated signed \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Reconfiguring transformation definition..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test003-config.ldif | \
+sed 's/{0}datamorph/{1}datamorph/' | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < data/test003-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on the new replicated values..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on the new replicated values..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(|(enumerated=not a value)(enumerated=jaj)(&(signed=45678)(!(signed>=50000))(signed>=44444)))" \
+	enumerated signed \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+LDIF=data/test003-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+rm $SEARCHOUT
+
+echo "Reverting part of the above configuration for remainder of the test..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test007-config.ldif | \
+sed 's/{0}datamorph/{1}datamorph/' | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < data/test007-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Modifying entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test005-changes.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Applying invalid changes (should fail)..."
+for CHANGE in data/test005-*fail.ldif; do
+	echo "... $CHANGE"
+	$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+		-f $CHANGE >> $TESTOUT 2>&1
+	RC=$?
+	case $RC in
+	0)
+		echo "ldapmodify should have failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit 1
+		;;
+	16|19)
+		echo "ldapmodify failed ($RC)"
+		;;
+	*)
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+		;;
+	esac
+done
+
+echo "Waiting ${SLEEP1} seconds for consumer to finish replicating..."
+sleep ${SLEEP1}
+
+echo "Reading affected entries back..."
+echo "# Reading affected entries back..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	'(|(objectClass=OpenLDAPperson)(ou=people))' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test005-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/denyop/Makefile b/contrib/slapd-modules/denyop/Makefile
new file mode 100644
index 0000000..2cea18b
--- /dev/null
+++ b/contrib/slapd-modules/denyop/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_DENYOP=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = denyop.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+denyop.la: denyop.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/denyop/denyop.c b/contrib/slapd-modules/denyop/denyop.c
new file mode 100644
index 0000000..dd3e13c
--- /dev/null
+++ b/contrib/slapd-modules/denyop/denyop.c
@@ -0,0 +1,260 @@
+/* denyop.c - Denies operations */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion in
+ * OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_DENYOP
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+
+/* This overlay provides a quick'n'easy way to deny selected operations
+ * for a database whose backend implements the operations.  It is intended
+ * to be less expensive than ACLs because its evaluation occurs before
+ * any backend specific operation is actually even initiated.
+ */
+
+enum {
+	denyop_add = 0,
+	denyop_bind,
+	denyop_compare,
+	denyop_delete,
+	denyop_extended,
+	denyop_modify,
+	denyop_modrdn,
+	denyop_search,
+	denyop_unbind
+} denyop_e;
+
+typedef struct denyop_info {
+	int do_op[denyop_unbind + 1];
+} denyop_info;
+
+static int
+denyop_func( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *) op->o_bd->bd_info;
+	denyop_info		*oi = (denyop_info *)on->on_bi.bi_private;
+	int			deny = 0;
+
+	switch( op->o_tag ) {
+	case LDAP_REQ_BIND:
+		deny = oi->do_op[denyop_bind];
+		break;
+
+	case LDAP_REQ_ADD:
+		deny = oi->do_op[denyop_add];
+		break;
+
+	case LDAP_REQ_DELETE:
+		deny = oi->do_op[denyop_delete];
+		break;
+
+	case LDAP_REQ_MODRDN:
+		deny = oi->do_op[denyop_modrdn];
+		break;
+
+	case LDAP_REQ_MODIFY:
+		deny = oi->do_op[denyop_modify];
+		break;
+
+	case LDAP_REQ_COMPARE:
+		deny = oi->do_op[denyop_compare];
+		break;
+
+	case LDAP_REQ_SEARCH:
+		deny = oi->do_op[denyop_search];
+		break;
+
+	case LDAP_REQ_EXTENDED:
+		deny = oi->do_op[denyop_extended];
+		break;
+
+	case LDAP_REQ_UNBIND:
+		deny = oi->do_op[denyop_unbind];
+		break;
+	}
+
+	if ( !deny ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+	send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+			"operation not allowed within namingContext" );
+
+	return 0;
+}
+
+static int
+denyop_over_init(
+	BackendDB *be, ConfigReply *cr
+)
+{
+	slap_overinst		*on = (slap_overinst *) be->bd_info;
+	denyop_info		*oi;
+
+	oi = (denyop_info *)ch_malloc(sizeof(denyop_info));
+	memset(oi, 0, sizeof(denyop_info));
+	on->on_bi.bi_private = oi;
+
+	return 0;
+}
+
+static int
+denyop_config(
+    BackendDB	*be,
+    const char	*fname,
+    int		lineno,
+    int		argc,
+    char	**argv
+)
+{
+	slap_overinst		*on = (slap_overinst *) be->bd_info;
+	denyop_info		*oi = (denyop_info *)on->on_bi.bi_private;
+
+	if ( strcasecmp( argv[0], "denyop" ) == 0 ) {
+		char *op;
+
+		if ( argc != 2 ) {
+			Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+				"operation list missing in "
+				"\"denyop <op-list>\" line.\n",
+				fname, lineno );
+			return( 1 );
+		}
+
+		/* The on->on_bi.bi_private pointer can be used for
+		 * anything this instance of the overlay needs.
+		 */
+
+		op = argv[1];
+		do {
+			char	*next = strchr( op, ',' );
+
+			if ( next ) {
+				next[0] = '\0';
+				next++;
+			}
+
+			if ( strcmp( op, "add" ) == 0 ) {
+				oi->do_op[denyop_add] = 1;
+
+			} else if ( strcmp( op, "bind" ) == 0 ) {
+				oi->do_op[denyop_bind] = 1;
+
+			} else if ( strcmp( op, "compare" ) == 0 ) {
+				oi->do_op[denyop_compare] = 1;
+
+			} else if ( strcmp( op, "delete" ) == 0 ) {
+				oi->do_op[denyop_delete] = 1;
+
+			} else if ( strcmp( op, "extended" ) == 0 ) {
+				oi->do_op[denyop_extended] = 1;
+
+			} else if ( strcmp( op, "modify" ) == 0 ) {
+				oi->do_op[denyop_modify] = 1;
+
+			} else if ( strcmp( op, "modrdn" ) == 0 ) {
+				oi->do_op[denyop_modrdn] = 1;
+
+			} else if ( strcmp( op, "search" ) == 0 ) {
+				oi->do_op[denyop_search] = 1;
+
+			} else if ( strcmp( op, "unbind" ) == 0 ) {
+				oi->do_op[denyop_unbind] = 1;
+
+			} else {
+				Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+					"unknown operation \"%s\" at "
+					"\"denyop <op-list>\" line.\n",
+					fname, lineno, op );
+				return( 1 );
+			}
+
+			op = next;
+		} while ( op );
+
+	} else {
+		return SLAP_CONF_UNKNOWN;
+	}
+	return 0;
+}
+
+static int
+denyop_destroy(
+	BackendDB *be, ConfigReply *cr
+)
+{
+	slap_overinst	*on = (slap_overinst *) be->bd_info;
+	denyop_info	*oi = (denyop_info *)on->on_bi.bi_private;
+
+	if ( oi ) {
+		ch_free( oi );
+	}
+
+	return 0;
+}
+
+/* This overlay is set up for dynamic loading via moduleload. For static
+ * configuration, you'll need to arrange for the slap_overinst to be
+ * initialized and registered by some other function inside slapd.
+ */
+
+static slap_overinst denyop;
+
+int
+denyop_initialize( void )
+{
+	memset( &denyop, 0, sizeof( slap_overinst ) );
+	denyop.on_bi.bi_type = "denyop";
+	denyop.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	denyop.on_bi.bi_db_init = denyop_over_init;
+	denyop.on_bi.bi_db_config = denyop_config;
+	denyop.on_bi.bi_db_destroy = denyop_destroy;
+
+	denyop.on_bi.bi_op_bind = denyop_func;
+	denyop.on_bi.bi_op_search = denyop_func;
+	denyop.on_bi.bi_op_compare = denyop_func;
+	denyop.on_bi.bi_op_modify = denyop_func;
+	denyop.on_bi.bi_op_modrdn = denyop_func;
+	denyop.on_bi.bi_op_add = denyop_func;
+	denyop.on_bi.bi_op_delete = denyop_func;
+	denyop.on_bi.bi_extended = denyop_func;
+	denyop.on_bi.bi_op_unbind = denyop_func;
+
+	denyop.on_response = NULL /* denyop_response */ ;
+
+	return overlay_register( &denyop );
+}
+
+#if SLAPD_OVER_DENYOP == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return denyop_initialize();
+}
+#endif /* SLAPD_OVER_DENYOP == SLAPD_MOD_DYNAMIC */
+
+#endif /* defined(SLAPD_OVER_DENYOP) */
diff --git a/contrib/slapd-modules/dsaschema/Makefile b/contrib/slapd-modules/dsaschema/Makefile
new file mode 100644
index 0000000..3a88fc0
--- /dev/null
+++ b/contrib/slapd-modules/dsaschema/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = dsaschema.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+dsaschema.la: dsaschema.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/dsaschema/README b/contrib/slapd-modules/dsaschema/README
new file mode 100644
index 0000000..fdf932e
--- /dev/null
+++ b/contrib/slapd-modules/dsaschema/README
@@ -0,0 +1,23 @@
+Copyright 2004-2022 The OpenLDAP Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+This directory contains a native slapd plugin, dsaschema, that permits the
+loading of DSA-specific schema from configuration files (including operational
+attributes).
+
+To use the plugin, add:
+
+moduleload dsaschema.so
+	/etc/openldap/schema/foo1.schema
+	...etc...
+	/etc/openldap/schema/fooN.schema
+
+to your slapd configuration file.
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+gcc -shared -I../../../include -Wall -g -o dsaschema.so dsaschema.c
+
diff --git a/contrib/slapd-modules/dsaschema/dsaschema.c b/contrib/slapd-modules/dsaschema/dsaschema.c
new file mode 100644
index 0000000..31defae
--- /dev/null
+++ b/contrib/slapd-modules/dsaschema/dsaschema.c
@@ -0,0 +1,369 @@
+/* dsaschema.c */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include <portable.h>
+
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include <ac/signal.h>
+#include <ac/errno.h>
+#include <ac/stdlib.h>
+#include <ac/ctype.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+
+#include <stdio.h>
+
+/*
+ * Schema reader that allows us to define DSA schema (including
+ * operational attributes and non-user object classes)
+ *
+ * A kludge, at best, and in order to avoid including slapd
+ * headers we use fprintf() rather than slapd's native logging,
+ * which may confuse users...
+ *
+ */
+
+#include <ldap.h>
+#include <ldap_schema.h>
+
+#include <slap.h>
+#include <slap-config.h>
+
+#define ARGS_STEP 512
+
+static char *fp_getline(FILE *fp, int *lineno);
+static void fp_getline_init(int *lineno);
+static int fp_parse_line(int lineno, char *line);
+static char *strtok_quote( char *line, char *sep );
+
+static char **cargv = NULL;
+static int cargv_size = 0;
+static int cargc = 0;
+static char *strtok_quote_ptr;
+
+int init_module(int argc, char *argv[]);
+
+static int dsaschema_parse_cr(const char *fname, int lineno, char *line, char **argv)
+{
+	struct config_args_s c = { .line = line };
+
+	if ( parse_cr( &c, NULL ) ) {
+		Debug( LDAP_DEBUG_ANY, "dsaschema_parse_cr: "
+				"ditcontentrule definition invalid at %s:%d\n",
+				fname, lineno );
+		return 1;
+	}
+
+	return 0;
+}
+
+static int dsaschema_read_config(const char *fname, int depth)
+{
+	FILE *fp;
+	char *line, *savefname, *saveline = NULL;
+	int savelineno, lineno;
+	int rc;
+
+	if (depth == 0) {
+		cargv = ch_calloc(ARGS_STEP + 1, sizeof(*cargv));
+		cargv_size = ARGS_STEP + 1;
+	}
+
+	fp = fopen(fname, "r");
+	if (fp == NULL) {
+		char ebuf[128];
+		int saved_errno = errno;
+		fprintf(stderr, "could not open config file \"%s\": %s (%d)\n",
+			fname, AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)), saved_errno);
+		return 1;
+	}
+	fp_getline_init(&lineno);
+
+	while ((line = fp_getline(fp, &lineno)) != NULL) {
+		/* skip comments and blank lines */
+		if (line[0] == '#' || line[0] == '\0') {
+			continue;
+		}
+
+		saveline = ch_strdup(line);
+
+		if (fp_parse_line(lineno, line) != 0) {
+			rc = 1;
+			break;
+		}
+
+		if (cargc < 1) {
+			continue;
+		}
+
+		if (strcasecmp(cargv[0], "attributetype") == 0 ||
+		    strcasecmp(cargv[0], "attribute") == 0) {
+			if (cargc < 2) {
+				fprintf(stderr, "%s: line %d: illegal attribute type format\n",
+					fname, lineno);
+				rc = 1;
+				break;
+			} else if (*cargv[1] == '(' /*')'*/) {
+				char *p;
+	
+				p = strchr(saveline, '(' /*')'*/);
+				rc = register_at(p, NULL, 0);
+				if (rc != 0) {
+					Debug( LDAP_DEBUG_ANY, "dsaschema_read_config: "
+							"attribute definition invalid at %s:%d\n",
+							fname, lineno );
+					break;
+				}
+			} else {
+				fprintf(stderr, "%s: line %d: old attribute type format not supported\n",
+					fname, lineno);
+			}
+		} else if (strcasecmp(cargv[0], "ditcontentrule") == 0) {
+			char *p;
+			p = strchr(saveline, '(' /*')'*/);
+			rc = dsaschema_parse_cr(fname, lineno, p, cargv);
+			if (rc != 0)
+				break;
+		} else if (strcasecmp(cargv[0], "objectclass") == 0) {
+			if (cargc < 2) {
+				fprintf(stderr, "%s: line %d: illegal objectclass format\n",
+					fname, lineno);
+				rc = 1;
+				break;
+			} else if (*cargv[1] == '(' /*')'*/) {
+				char *p;
+
+				p = strchr(saveline, '(' /*')'*/);
+				rc = register_oc(p, NULL, 0);
+				if (rc != 0) {
+					Debug( LDAP_DEBUG_ANY, "dsaschema_read_config: "
+							"objectclass definition invalid at %s:%d\n",
+							fname, lineno );
+					break;
+				}
+			} else {
+				fprintf(stderr, "%s: line %d: object class format not supported\n",
+					fname, lineno);
+			}
+		} else if (strcasecmp(cargv[0], "include") == 0) {
+			if (cargc < 2) {
+				fprintf(stderr, "%s: line %d: missing file name in \"include <filename>\" line",
+					fname, lineno);
+				rc = 1;
+				break;
+			}
+			savelineno = lineno;
+			savefname = ch_strdup(cargv[1]);
+
+			rc = dsaschema_read_config(savefname, depth + 1);
+			ch_free(savefname);
+			lineno = savelineno - 1;
+			if (rc != 0) {
+				break;
+			}
+		} else {
+			fprintf(stderr, "%s: line %d: unknown directive \"%s\" (ignored)\n",
+				fname, lineno, cargv[0]);
+		}
+
+		ch_free(saveline);
+		saveline = NULL;
+	}
+
+	fclose(fp);
+
+	if (depth == 0)
+		ch_free(cargv);
+
+	if (saveline != NULL)
+		ch_free(saveline);
+
+	return rc;
+}
+
+int init_module(int argc, char *argv[])
+{
+	int i;
+	int rc;
+
+	for (i = 0; i < argc; i++) {
+		rc = dsaschema_read_config(argv[i], 0);
+		if (rc != 0) {
+			break;
+		}
+	}
+
+	return rc;
+}
+
+
+static int
+fp_parse_line(
+    int		lineno,
+    char	*line
+)
+{
+	char *	token;
+
+	cargc = 0;
+	token = strtok_quote( line, " \t" );
+
+	if ( strtok_quote_ptr ) {
+		*strtok_quote_ptr = ' ';
+	}
+
+	if ( strtok_quote_ptr ) {
+		*strtok_quote_ptr = '\0';
+	}
+
+	for ( ; token != NULL; token = strtok_quote( NULL, " \t" ) ) {
+		if ( cargc == cargv_size - 1 ) {
+			char **tmp;
+			tmp = ch_realloc( cargv, (cargv_size + ARGS_STEP) *
+					    sizeof(*cargv) );
+			cargv = tmp;
+			cargv_size += ARGS_STEP;
+		}
+		cargv[cargc++] = token;
+	}
+	cargv[cargc] = NULL;
+	return 0;
+}
+
+static char *
+strtok_quote( char *line, char *sep )
+{
+	int		inquote;
+	char		*tmp;
+	static char	*next;
+
+	strtok_quote_ptr = NULL;
+	if ( line != NULL ) {
+		next = line;
+	}
+	while ( *next && strchr( sep, *next ) ) {
+		next++;
+	}
+
+	if ( *next == '\0' ) {
+		next = NULL;
+		return( NULL );
+	}
+	tmp = next;
+
+	for ( inquote = 0; *next; ) {
+		switch ( *next ) {
+		case '"':
+			if ( inquote ) {
+				inquote = 0;
+			} else {
+				inquote = 1;
+			}
+			AC_MEMCPY( next, next + 1, strlen( next + 1 ) + 1 );
+			break;
+
+		case '\\':
+			if ( next[1] )
+				AC_MEMCPY( next,
+					    next + 1, strlen( next + 1 ) + 1 );
+			next++;		/* dont parse the escaped character */
+			break;
+
+		default:
+			if ( ! inquote ) {
+				if ( strchr( sep, *next ) != NULL ) {
+					strtok_quote_ptr = next;
+					*next++ = '\0';
+					return( tmp );
+				}
+			}
+			next++;
+			break;
+		}
+	}
+
+	return( tmp );
+}
+
+static char	buf[BUFSIZ];
+static char	*line;
+static size_t lmax, lcur;
+
+#define CATLINE( buf ) \
+	do { \
+		size_t len = strlen( buf ); \
+		while ( lcur + len + 1 > lmax ) { \
+			lmax += BUFSIZ; \
+			line = (char *) ch_realloc( line, lmax ); \
+		} \
+		strcpy( line + lcur, buf ); \
+		lcur += len; \
+	} while( 0 )
+
+static char *
+fp_getline( FILE *fp, int *lineno )
+{
+	char		*p;
+
+	lcur = 0;
+	CATLINE( buf );
+	(*lineno)++;
+
+	/* hack attack - keeps us from having to keep a stack of bufs... */
+	if ( strncasecmp( line, "include", 7 ) == 0 ) {
+		buf[0] = '\0';
+		return( line );
+	}
+
+	while ( fgets( buf, sizeof(buf), fp ) != NULL ) {
+		/* trim off \r\n or \n */
+		if ( (p = strchr( buf, '\n' )) != NULL ) {
+			if( p > buf && p[-1] == '\r' ) --p;
+			*p = '\0';
+		}
+		
+		/* trim off trailing \ and append the next line */
+		if ( line[ 0 ] != '\0' 
+				&& (p = line + strlen( line ) - 1)[ 0 ] == '\\'
+				&& p[ -1 ] != '\\' ) {
+			p[ 0 ] = '\0';
+			lcur--;
+
+		} else {
+			if ( ! isspace( (unsigned char) buf[0] ) ) {
+				return( line );
+			}
+
+			/* change leading whitespace to a space */
+			buf[0] = ' ';
+		}
+
+		CATLINE( buf );
+		(*lineno)++;
+	}
+	buf[0] = '\0';
+
+	return( line[0] ? line : NULL );
+}
+
+static void
+fp_getline_init( int *lineno )
+{
+	*lineno = -1;
+	buf[0] = '\0';
+}
+
diff --git a/contrib/slapd-modules/dupent/Makefile b/contrib/slapd-modules/dupent/Makefile
new file mode 100644
index 0000000..6b35438
--- /dev/null
+++ b/contrib/slapd-modules/dupent/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_DUPENT=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = dupent.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+dupent.la: dupent.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/dupent/dupent.c b/contrib/slapd-modules/dupent/dupent.c
new file mode 100644
index 0000000..89ad622
--- /dev/null
+++ b/contrib/slapd-modules/dupent/dupent.c
@@ -0,0 +1,558 @@
+/* dupent.c - LDAP Control for a Duplicate Entry Representation of Search Results */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2006-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion
+ * in OpenLDAP Software.
+ */
+
+/*
+ * LDAP Control for a Duplicate Entry Representation of Search Results
+ * <draft-ietf-ldapext-ldapv3-dupent-08.txt> (EXPIRED)
+ * <http://tools.ietf.org/id/draft-ietf-ldapext-ldapv3-dupent-08.txt>
+ */
+
+#include "portable.h"
+
+/* define SLAPD_OVER_DUPENT=2 to build as run-time loadable module */
+#ifdef SLAPD_OVER_DUPENT
+
+/*
+ * The macros
+ *
+ * LDAP_CONTROL_DUPENT_REQUEST		"2.16.840.1.113719.1.27.101.1"
+ * LDAP_CONTROL_DUPENT_RESPONSE		"2.16.840.1.113719.1.27.101.2"
+ * LDAP_CONTROL_DUPENT_ENTRY		"2.16.840.1.113719.1.27.101.3"
+ *
+ * are already defined in <ldap.h>
+ */
+
+/*
+ * support for no attrs and "*" in AttributeDescriptionList is missing
+ */
+
+#include "slap.h"
+#include "ac/string.h"
+
+#define o_dupent			o_ctrlflag[dupent_cid]
+#define o_ctrldupent		o_controls[dupent_cid]
+
+static int dupent_cid;
+static slap_overinst dupent;
+
+typedef struct dupent_t {
+	AttributeName	*ds_an;
+	ber_len_t		ds_nattrs;
+	slap_mask_t		ds_flags;
+	ber_int_t		ds_paa;
+} dupent_t;
+
+static int
+dupent_parseCtrl (
+	Operation *op,
+	SlapReply *rs,
+	LDAPControl *ctrl )
+{
+	ber_tag_t tag;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_len_t len;
+	BerVarray AttributeDescriptionList = NULL;
+	ber_len_t cnt = sizeof(struct berval);
+	ber_len_t off = 0;
+	ber_int_t PartialApplicationAllowed = 1;
+	dupent_t *ds = NULL;
+	int i;
+
+	if ( op->o_dupent != SLAP_CONTROL_NONE ) {
+		rs->sr_text = "Dupent control specified multiple times";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
+		rs->sr_text = "Dupent control value is absent";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
+		rs->sr_text = "Dupent control value is empty";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	ber_init2( ber, &ctrl->ldctl_value, 0 );
+
+	/*
+
+   DuplicateEntryRequest ::= SEQUENCE { 
+        AttributeDescriptionList, -- from [RFC2251] 
+        PartialApplicationAllowed BOOLEAN DEFAULT TRUE } 
+
+        AttributeDescriptionList ::= SEQUENCE OF 
+                AttributeDescription 
+    
+        AttributeDescription ::= LDAPString 
+    
+        attributeDescription = AttributeType [ ";" <options> ] 
+
+	 */
+
+	tag = ber_skip_tag( ber, &len );
+	if ( tag != LBER_SEQUENCE ) return LDAP_INVALID_SYNTAX;
+	if ( ber_scanf( ber, "{M}", &AttributeDescriptionList, &cnt, off )
+		== LBER_ERROR )
+	{
+		rs->sr_text = "Dupent control: dupentSpec decoding error";
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+	tag = ber_skip_tag( ber, &len );
+	if ( tag == LBER_BOOLEAN ) {
+		/* NOTE: PartialApplicationAllowed is ignored, since the control
+		 * can always be honored
+		 */
+		if ( ber_scanf( ber, "b", &PartialApplicationAllowed ) == LBER_ERROR )
+		{
+			rs->sr_text = "Dupent control: dupentSpec decoding error";
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+		tag = ber_skip_tag( ber, &len );
+	}
+	if ( len || tag != LBER_DEFAULT ) {
+		rs->sr_text = "Dupent control: dupentSpec decoding error";
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+
+	ds = (dupent_t *)op->o_tmpcalloc( 1,
+		sizeof(dupent_t) + sizeof(AttributeName)*cnt,
+		op->o_tmpmemctx );
+
+	ds->ds_paa = PartialApplicationAllowed;
+
+	if ( cnt == 0 ) {
+		ds->ds_flags |= SLAP_USERATTRS_YES;
+
+	} else {
+		int c;
+
+		ds->ds_an = (AttributeName *)&ds[ 1 ];
+
+		for ( i = 0, c = 0; i < cnt; i++ ) {
+			const char *text;
+			int j;
+			int rc;
+			AttributeDescription *ad = NULL;
+
+			if ( bvmatch( &AttributeDescriptionList[i],
+				slap_bv_all_user_attrs ) )
+			{
+				if ( ds->ds_flags & SLAP_USERATTRS_YES ) {
+					rs->sr_text = "Dupent control: AttributeDescription decoding error";
+					rs->sr_err = LDAP_PROTOCOL_ERROR;
+					goto done;
+				}
+
+				ds->ds_flags |= SLAP_USERATTRS_YES;
+				continue;
+			}
+
+			rc = slap_bv2ad( &AttributeDescriptionList[i], &ad, &text );
+			if ( rc != LDAP_SUCCESS ) {
+				continue;
+			}
+
+			ds->ds_an[c].an_desc = ad;
+			ds->ds_an[c].an_name = ad->ad_cname;
+
+			/* FIXME: not specified; consider this an error, just in case */
+			for ( j = 0; j < c; j++ ) {
+				if ( ds->ds_an[c].an_desc == ds->ds_an[j].an_desc ) {
+					rs->sr_text = "Dupent control: AttributeDescription must be unique within AttributeDescriptionList";
+					rs->sr_err = LDAP_PROTOCOL_ERROR;
+					goto done;
+				}
+			}
+
+			c++;
+		}
+
+		ds->ds_nattrs = c;
+
+		if ( ds->ds_flags & SLAP_USERATTRS_YES ) {
+			/* purge user attrs */
+			for ( i = 0; i < ds->ds_nattrs;  ) {
+				if ( is_at_operational( ds->ds_an[i].an_desc->ad_type ) ) {
+					i++;
+					continue;
+				}
+
+				ds->ds_nattrs--;
+				if ( i < ds->ds_nattrs ) {
+					ds->ds_an[i] = ds->ds_an[ds->ds_nattrs];
+				}
+			}
+		}
+	}
+
+	op->o_ctrldupent = (void *)ds;
+
+	op->o_dupent = ctrl->ldctl_iscritical
+		? SLAP_CONTROL_CRITICAL
+		: SLAP_CONTROL_NONCRITICAL;
+
+	rs->sr_err = LDAP_SUCCESS;
+
+done:;
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		op->o_tmpfree( ds, op->o_tmpmemctx );
+	}
+
+	if ( AttributeDescriptionList != NULL ) {
+		ber_memfree_x( AttributeDescriptionList, op->o_tmpmemctx );
+	}
+
+	return rs->sr_err;
+}
+
+typedef struct dupent_cb_t {
+	slap_overinst	*dc_on;
+	dupent_t		*dc_ds;
+	int		dc_skip;
+} dupent_cb_t;
+
+typedef struct valnum_t {
+	Attribute *ap;
+	Attribute a;
+	struct berval vals[2];
+	struct berval nvals[2];
+	int cnt;
+} valnum_t;
+
+static int
+dupent_response_done( Operation *op, SlapReply *rs )
+{
+	BerElementBuffer	berbuf;
+	BerElement			*ber = (BerElement *) &berbuf;
+	struct berval		ctrlval;
+	LDAPControl			*ctrl, *ctrlsp[2];
+
+	ber_init2( ber, NULL, LBER_USE_DER );
+
+	/*
+
+      DuplicateEntryResponseDone ::= SEQUENCE { 
+         resultCode,     -- From [RFC2251] 
+         errorMessage    [0] LDAPString OPTIONAL, 
+         attribute       [1] AttributeDescription OPTIONAL } 
+
+	 */
+
+	ber_printf( ber, "{i}", rs->sr_err );
+	if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
+		ber_free_buf( ber );
+		if ( op->o_dupent == SLAP_CONTROL_CRITICAL ) {
+			return LDAP_CONSTRAINT_VIOLATION;
+		}
+		return SLAP_CB_CONTINUE;
+	}
+
+	ctrl = op->o_tmpcalloc( 1,
+		sizeof( LDAPControl ) + ctrlval.bv_len + 1,
+		op->o_tmpmemctx );
+	ctrl->ldctl_value.bv_val = (char *)&ctrl[ 1 ];
+	ctrl->ldctl_oid = LDAP_CONTROL_DUPENT_RESPONSE;
+	ctrl->ldctl_iscritical = 0;
+	ctrl->ldctl_value.bv_len = ctrlval.bv_len;
+	AC_MEMCPY( ctrl->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len );
+	ctrl->ldctl_value.bv_val[ ctrl->ldctl_value.bv_len ] = '\0';
+
+	ber_free_buf( ber );
+
+	ctrlsp[0] = ctrl;
+	ctrlsp[1] = NULL;
+	slap_add_ctrls( op, rs, ctrlsp );
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+dupent_response_entry_1level(
+	Operation *op,
+	SlapReply *rs,
+	Entry *e,
+	valnum_t *valnum,
+	int nattrs,
+	int level )
+{
+	int i, rc = LDAP_SUCCESS;
+
+	for ( i = 0; i < valnum[level].ap->a_numvals; i++ ) {
+		LDAPControl	*ctrl = NULL, *ctrlsp[2];
+
+		valnum[level].a.a_vals[0] = valnum[level].ap->a_vals[i];
+		if ( valnum[level].ap->a_nvals != valnum[level].ap->a_vals ) {
+			valnum[level].a.a_nvals[0] = valnum[level].ap->a_nvals[i];
+		}
+
+		if ( level < nattrs - 1 ) {
+			rc = dupent_response_entry_1level( op, rs,
+				e, valnum, nattrs, level + 1 );
+			if ( rc != LDAP_SUCCESS ) {
+				break;
+			}
+
+			continue;
+		}
+
+		/* NOTE: add the control all times, under the assumption
+		 * send_search_entry() honors the REP_CTRLS_MUSTBEFREED
+		 * set by slap_add_ctrls(); this is not true (ITS#6629)
+		 */
+		ctrl = op->o_tmpcalloc( 1, sizeof( LDAPControl ), op->o_tmpmemctx );
+		ctrl->ldctl_oid = LDAP_CONTROL_DUPENT_ENTRY;
+		ctrl->ldctl_iscritical = 0;
+
+		ctrlsp[0] = ctrl;
+		ctrlsp[1] = NULL;
+		slap_add_ctrls( op, rs, ctrlsp );
+
+		/* do the real send */
+		rs->sr_entry = e;
+		rc = send_search_entry( op, rs );
+		if ( rc != LDAP_SUCCESS ) {
+			break;
+		}
+	}
+
+	return rc;
+}
+
+static void
+dupent_attr_prepare( dupent_t *ds, Entry *e, valnum_t *valnum, int nattrs, int c, Attribute **app, Attribute **ap_listp )
+{
+	valnum[c].ap = *app;
+	*app = (*app)->a_next;
+
+	valnum[c].ap->a_next = *ap_listp;
+	*ap_listp = valnum[c].ap;
+
+	valnum[c].a = *valnum[c].ap;
+	if ( c < nattrs - 1 ) {
+		valnum[c].a.a_next = &valnum[c + 1].a;
+	} else {
+		valnum[c].a.a_next = NULL;
+	}
+	valnum[c].a.a_numvals = 1;
+	valnum[c].a.a_vals = valnum[c].vals;
+	BER_BVZERO( &valnum[c].vals[1] );
+	if ( valnum[c].ap->a_nvals != valnum[c].ap->a_vals ) {
+		valnum[c].a.a_nvals = valnum[c].nvals;
+		BER_BVZERO( &valnum[c].nvals[1] );
+	} else {
+		valnum[c].a.a_nvals = valnum[c].a.a_vals;
+	}
+}
+
+static int
+dupent_response_entry( Operation *op, SlapReply *rs )
+{
+	dupent_cb_t	*dc = (dupent_cb_t *)op->o_callback->sc_private;
+	int			nattrs = 0;
+	valnum_t	*valnum = NULL;
+	Attribute	**app, *ap_list = NULL;
+	int			i, c;
+	Entry		*e = NULL;
+	int			rc;
+
+	assert( rs->sr_type == REP_SEARCH );
+
+	for ( i = 0; i < dc->dc_ds->ds_nattrs; i++ ) {
+		Attribute *ap;
+
+		ap = attr_find( rs->sr_entry->e_attrs,
+			dc->dc_ds->ds_an[ i ].an_desc );
+		if ( ap && ap->a_numvals > 1 ) {
+			nattrs++;
+		}
+	}
+
+	if ( dc->dc_ds->ds_flags & SLAP_USERATTRS_YES ) {
+		Attribute *ap;
+
+		for ( ap = rs->sr_entry->e_attrs; ap != NULL; ap = ap->a_next ) {
+			if ( !is_at_operational( ap->a_desc->ad_type ) && ap->a_numvals > 1 ) {
+				nattrs++;
+			}
+		}
+	}
+
+	if ( !nattrs ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	rs_entry2modifiable( op, rs, dc->dc_on );
+	rs->sr_flags &= ~(REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED);
+	e = rs->sr_entry;
+
+	valnum = op->o_tmpcalloc( sizeof(valnum_t), nattrs, op->o_tmpmemctx );
+
+	for ( c = 0, i = 0; i < dc->dc_ds->ds_nattrs; i++ ) {
+		for ( app = &e->e_attrs; *app != NULL; app = &(*app)->a_next ) {
+			if ( (*app)->a_desc == dc->dc_ds->ds_an[ i ].an_desc ) {
+				break;
+			}
+		}
+
+		if ( *app != NULL && (*app)->a_numvals > 1 ) {
+			assert( c < nattrs );
+			dupent_attr_prepare( dc->dc_ds, e, valnum, nattrs, c, app, &ap_list );
+			c++;
+		}
+	}
+
+	if ( dc->dc_ds->ds_flags & SLAP_USERATTRS_YES ) {
+		for ( app = &e->e_attrs; *app != NULL; app = &(*app)->a_next ) {
+			if ( !is_at_operational( (*app)->a_desc->ad_type ) && (*app)->a_numvals > 1 ) {
+				assert( c < nattrs );
+				dupent_attr_prepare( dc->dc_ds, e, valnum, nattrs, c, app, &ap_list );
+				c++;
+			}
+		}
+	}
+
+	for ( app = &e->e_attrs; *app != NULL; app = &(*app)->a_next )
+		/* goto tail */ ;
+
+	*app = &valnum[0].a;
+
+	/* NOTE: since send_search_entry() does not honor the
+	 * REP_CTRLS_MUSTBEFREED flag set by slap_add_ctrls(),
+	 * the control could be added here once for all (ITS#6629)
+	 */
+
+	dc->dc_skip = 1;
+	rc = dupent_response_entry_1level( op, rs, e, valnum, nattrs, 0 );
+	dc->dc_skip = 0;
+
+	*app = ap_list;
+
+	entry_free( e );
+
+	op->o_tmpfree( valnum, op->o_tmpmemctx );
+
+	return rc;
+}
+
+static int
+dupent_response( Operation *op, SlapReply *rs )
+{
+	dupent_cb_t	*dc = (dupent_cb_t *)op->o_callback->sc_private;
+
+	if ( dc->dc_skip ) {
+		return SLAP_CB_CONTINUE;
+	}
+	
+	switch ( rs->sr_type ) {
+	case REP_RESULT:
+		return dupent_response_done( op, rs );
+
+	case REP_SEARCH:
+		return dupent_response_entry( op, rs );
+
+	case REP_SEARCHREF:
+		break;
+
+	default:
+		assert( 0 );
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+dupent_cleanup( Operation *op, SlapReply *rs )
+{
+	if ( rs->sr_type == REP_RESULT || rs->sr_err == SLAPD_ABANDON ) {
+		op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
+		op->o_callback = NULL;
+
+		op->o_tmpfree( op->o_ctrldupent, op->o_tmpmemctx );
+		op->o_ctrldupent = NULL;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+dupent_op_search( Operation *op, SlapReply *rs )
+{
+	if ( op->o_dupent != SLAP_CONTROL_NONE ) {
+		slap_callback *sc;
+		dupent_cb_t *dc;
+
+		sc = op->o_tmpcalloc( 1, sizeof( slap_callback ) + sizeof( dupent_cb_t ), op->o_tmpmemctx );
+
+		dc = (dupent_cb_t *)&sc[ 1 ];
+		dc->dc_on = (slap_overinst *)op->o_bd->bd_info;
+		dc->dc_ds = (dupent_t *)op->o_ctrldupent;
+		dc->dc_skip = 0;
+
+		sc->sc_response = dupent_response;
+		sc->sc_cleanup = dupent_cleanup;
+		sc->sc_private = (void *)dc;
+
+		sc->sc_next = op->o_callback->sc_next;
+                op->o_callback->sc_next = sc;
+	}
+	
+	return SLAP_CB_CONTINUE;
+}
+
+#if SLAPD_OVER_DUPENT == SLAPD_MOD_DYNAMIC
+static
+#endif /* SLAPD_OVER_DUPENT == SLAPD_MOD_DYNAMIC */
+int
+dupent_initialize( void )
+{
+	int rc;
+
+	rc = register_supported_control( LDAP_CONTROL_DUPENT,
+		SLAP_CTRL_SEARCH, NULL,
+		dupent_parseCtrl, &dupent_cid );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY,
+			"dupent_initialize: Failed to register control (%d)\n",
+			rc );
+		return -1;
+	}
+
+	dupent.on_bi.bi_type = "dupent";
+
+	dupent.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	dupent.on_bi.bi_op_search = dupent_op_search;
+
+	return overlay_register( &dupent );
+}
+
+#if SLAPD_OVER_DUPENT == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return dupent_initialize();
+}
+#endif /* SLAPD_OVER_DUPENT == SLAPD_MOD_DYNAMIC */
+
+#endif /* SLAPD_OVER_DUPENT */
diff --git a/contrib/slapd-modules/emptyds/Makefile b/contrib/slapd-modules/emptyds/Makefile
new file mode 100644
index 0000000..654f856
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/Makefile
@@ -0,0 +1,78 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+SRCDIR = ./
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_EDS=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = emptyds.la
+MANPAGES = slapo-emptyds.5
+CLEAN = *.o *.lo *.la .libs
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+all: $(PROGRAMS)
+
+d :=
+sp :=
+dir := tests
+include $(dir)/Rules.mk
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+emptyds.la: emptyds.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+		-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf $(CLEAN)
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/emptyds/README b/contrib/slapd-modules/emptyds/README
new file mode 100644
index 0000000..914d4e7
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/README
@@ -0,0 +1,66 @@
+emptyds Overlay README
+
+DESCRIPTION
+    This package contains an OpenLDAP overlay called "emptyds" (empty
+    directory string) that eliminates empty values of type directory string
+    (OID 1.3.6.1.4.1.1466.115.121.1.15) from the list of the values in the
+    following manner:
+    
+    - add: All empty attribute values will be removed before the add request
+      is executed
+    - mod-replace: A replace with empty values will be modified to a replace
+      without values. As result the attribute will be deleted
+    - mod-add: All empty attribute values will be removed before the mod-add
+      request is executed
+    - mod-delete: All empty attribute values will be removed before the
+      mod-delete request is executed
+    
+    If removing all empty values from a modification makes it a no-op, that
+    modification is removed from the list.
+    
+    At module load time the emptyds overlay manipulates the syntax checking
+    so that it intercepts the syntax check and allows empty values for
+    attributes of type directory string only. Non-empty values continue to
+    go through the normal check routines. It is therefore very important to
+    configure the overlays in a way that ensures that the emptyds overlay gets
+    the control over the operation before any other overlay. Otherwise it
+    could come to the situation with empty attribute values in the data base.
+    
+    David Hawes' addpartial overlay has been used as starting point for this
+    overlay.
+     
+BUILDING
+    A Makefile is included, please set your LDAP_SRC directory properly.
+
+INSTALLATION
+    After compiling the emptyds overlay, add the following to your
+    slapd.conf:
+
+    ### slapd.conf
+    ...
+    moduleload emptyds.la
+    ...
+    overlay emptyds
+    ...
+    # before database directive...
+    # this overlay must be the last overlay in the config file to ensure that
+    # requests are modified before other overlays get them.
+    ...
+    ### end slapd.conf
+
+CAVEATS
+    - In order to ensure that emptyds does what it needs to do, it must be
+      the last overlay configured so it will run before the other overlays.
+
+---
+Copyright 2014-2022 The OpenLDAP Foundation.
+Portions Copyright (C) DAASI International GmbH, Tamim Ziai.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+http://www.OpenLDAP.org/license.html.
diff --git a/contrib/slapd-modules/emptyds/emptyds.c b/contrib/slapd-modules/emptyds/emptyds.c
new file mode 100644
index 0000000..bb3202e
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/emptyds.c
@@ -0,0 +1,325 @@
+/* emptyds.c */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2014-2022 The OpenLDAP Foundation.
+ * Portions Copyright (C) 2014 DAASI International GmbH, Tamim Ziai.
+ * Portions Copyright (C) 2022 Ondřej Kuzník, Symas Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * http://www.OpenLDAP.org/license.html.
+ */
+/* ACKNOLEDGEDMENTS:
+ * This work was initially developed by Tamim Ziai of DAASI International GmbH
+ * for inclusion in OpenLDAP Software.
+ */
+/* slapo-emptyds
+ *
+ * This is an OpenLDAP overlay that accepts empty strings as attribute values
+ * without syntax violation but never actually stores them. This allows
+ * applications that used to work with LDAP implementations allowing empty
+ * strings (such as Novel eDirectory) to continue to work with OpenLDAP without
+ * any modifications. Add and modify change types will be proceeded as follows,
+ * other operations will be forwarded without modifications:
+ *
+ * changeType: add                  changeType: add
+ * sn: <empty>              -->     sn: blah
+ * sn: blah
+ *
+ * changeType: modify               changeType: modify
+ * add: sn                  -->     add: sn
+ * sn: <empty>                      sn: blah
+ * sn: blah
+ *
+ * changeType: modify               changeType: modify
+ * delete: sn               -->     delete: sn
+ * sn: <empty>                      sn: blah
+ * sn: blah
+ *
+ * changeType: modify               changeType: modify
+ * replace: sn              -->     replace: sn
+ * sn: <empty>
+ *
+ */
+
+#include "portable.h"
+#include "slap.h"
+
+static slap_overinst emptyds;
+
+static const char ds_oid[] = "1.3.6.1.4.1.1466.115.121.1.15";
+
+static slap_syntax_validate_func *ssyn_validate_original = NULL;
+static slap_syntax_transform_func *ssyn_pretty_original = NULL;
+static int emptyds_instances = 0;
+
+static unsigned int
+remove_empty_values( Modification *m, Attribute *a )
+{
+	BerVarray vals = m ? m->sm_values : a->a_vals,
+			  nvals = m ? m->sm_nvalues : a->a_nvals;
+	unsigned int i, j, numvals = m ? m->sm_numvals : a->a_numvals;
+
+	for ( i = 0; i < numvals && !BER_BVISEMPTY( &vals[i] ); i++ )
+		/* Find first empty */;
+
+	if ( i == numvals ) return i;
+
+	/*
+	 * We have an empty value at index i, move all of them to the end of the
+	 * list, preserving the order of non-empty values.
+	 */
+	j = i + 1;
+	for ( j = i + 1; j < numvals; j++ ) {
+		struct berval tmp;
+
+		if ( BER_BVISEMPTY( &vals[j] ) ) continue;
+
+		tmp = vals[i];
+		vals[i] = vals[j];
+		vals[j] = tmp;
+
+		if ( nvals && vals != nvals ) {
+			tmp = nvals[i];
+			nvals[i] = nvals[j];
+			nvals[j] = tmp;
+		}
+
+		if ( m && a && m->sm_values != a->a_vals ) {
+			tmp = a->a_vals[i];
+			a->a_vals[i] = a->a_vals[j];
+			a->a_vals[j] = tmp;
+
+			if ( a->a_nvals && a->a_vals != a->a_nvals ) {
+				tmp = a->a_nvals[i];
+				a->a_nvals[i] = a->a_nvals[j];
+				a->a_nvals[j] = tmp;
+			}
+		}
+		i++;
+	}
+
+	/* Free empty vals */
+	for ( ; j && i < j--; ) {
+		ber_memfree( vals[j].bv_val );
+		if ( nvals && vals != nvals ) {
+			ber_memfree( nvals[j].bv_val );
+			BER_BVZERO( &nvals[j] );
+		}
+
+		if ( m && a && m->sm_values != a->a_vals ) {
+			if ( m->sm_values[j].bv_val != a->a_vals[j].bv_val ) {
+				ber_memfree( a->a_vals[j].bv_val );
+				BER_BVZERO( &a->a_vals[j] );
+
+				if ( a->a_nvals && a->a_vals != a->a_nvals ) {
+					ber_memfree( a->a_nvals[j].bv_val );
+					BER_BVZERO( &a->a_nvals[j] );
+				}
+			}
+		}
+		BER_BVZERO( &vals[j] );
+	}
+
+	return i;
+}
+
+/**
+ *  Remove all operations with empty strings.
+ */
+static int
+emptyds_op_add( Operation *op, SlapReply *rs )
+{
+	Attribute **ap, **nexta, *a;
+	Modifications **mlp, **nextp = NULL, *ml;
+	Entry *e = op->ora_e;
+
+	/*
+	 * op->ora_modlist can be NULL, at least accesslog doesn't always populate
+	 * it on an add.
+	 */
+	for ( ap = &e->e_attrs, a = e->e_attrs, mlp = &op->ora_modlist,
+		  ml = op->ora_modlist;
+			a != NULL;
+			ap = nexta, a = *ap, mlp = nextp, ml = ml ? *mlp : NULL ) {
+		AttributeType *at = a->a_desc->ad_type;
+		unsigned int remaining;
+
+		nexta = &a->a_next;
+		if ( ml ) {
+			nextp = &ml->sml_next;
+		}
+
+		if ( at->sat_syntax != slap_schema.si_syn_directoryString ||
+				at->sat_atype.at_usage != LDAP_SCHEMA_USER_APPLICATIONS )
+			continue;
+
+		remaining = remove_empty_values( &ml->sml_mod, a );
+		if ( remaining == a->a_numvals ) continue;
+		/* Empty values found */
+
+		if ( !remaining ) {
+			/* All values are empty */
+			*ap = a->a_next;
+			a->a_next = NULL;
+			nexta = ap;
+
+			if ( ml ) {
+				*mlp = ml->sml_next;
+				ml->sml_next = NULL;
+				nextp = mlp;
+				/* Values are generally shared with attribute */
+				slap_mods_free( ml, ml->sml_values != a->a_vals );
+			}
+			attr_free( a );
+		} else {
+			a->a_numvals = remaining;
+			if ( ml ) {
+				ml->sml_mod.sm_numvals = remaining;
+			}
+		}
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+emptyds_op_modify( Operation *op, SlapReply *rs )
+{
+	Modifications **mlp, **nextp, *ml;
+
+	for ( mlp = &op->orm_modlist, ml = op->orm_modlist; ml != NULL;
+			mlp = nextp, ml = *mlp ) {
+		AttributeType *at = ml->sml_desc->ad_type;
+		unsigned int remaining;
+
+		nextp = &ml->sml_next;
+
+		if ( at->sat_syntax != slap_schema.si_syn_directoryString ||
+				at->sat_atype.at_usage != LDAP_SCHEMA_USER_APPLICATIONS )
+			continue;
+
+		remaining = remove_empty_values( &ml->sml_mod, NULL );
+		if ( remaining == ml->sml_numvals ) continue;
+
+		if ( !remaining ) {
+			/* All values are empty */
+			if ( ml->sml_op == LDAP_MOD_REPLACE ) {
+				/* Replace is kept */
+				if ( ml->sml_nvalues && ml->sml_nvalues != ml->sml_values ) {
+					ber_bvarray_free( ml->sml_nvalues );
+				}
+				if ( ml->sml_values ) {
+					ber_bvarray_free( ml->sml_values );
+				}
+
+				ml->sml_numvals = 0;
+				ml->sml_values = NULL;
+				ml->sml_nvalues = NULL;
+			} else {
+				/* Remove modification */
+				*mlp = ml->sml_next;
+				ml->sml_next = NULL;
+				nextp = mlp;
+				slap_mods_free( ml, 1 );
+			}
+		} else {
+			ml->sml_numvals = remaining;
+		}
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+emptyds_ssyn_validate( Syntax *syntax, struct berval *in )
+{
+	if ( BER_BVISEMPTY( in ) && syntax == slap_schema.si_syn_directoryString ) {
+		return LDAP_SUCCESS;
+	}
+	return ssyn_validate_original( syntax, in );
+}
+
+static int
+emptyds_ssyn_pretty( Syntax *syntax,
+		struct berval *in,
+		struct berval *out,
+		void *memctx )
+{
+	if ( BER_BVISEMPTY( in ) && syntax == slap_schema.si_syn_directoryString ) {
+		return LDAP_SUCCESS;
+	}
+	return ssyn_pretty_original( syntax, in, out, memctx );
+}
+
+static int
+emptyds_db_init( BackendDB *be, ConfigReply *cr )
+{
+	Syntax *syntax = syn_find( ds_oid );
+
+	if ( syntax == NULL ) {
+		Debug( LDAP_DEBUG_TRACE, "emptyds_db_init: "
+				"Syntax %s not found\n",
+				ds_oid );
+	} else {
+		Debug( LDAP_DEBUG_TRACE, "emptyds_db_init: "
+				"Found syntax: %s\n",
+				syntax->ssyn_bvoid.bv_val );
+		if ( ssyn_validate_original == NULL && syntax->ssyn_validate != NULL ) {
+			ssyn_validate_original = syntax->ssyn_validate;
+			syntax->ssyn_validate = emptyds_ssyn_validate;
+		}
+		if ( ssyn_pretty_original == NULL && syntax->ssyn_pretty != NULL ) {
+			ssyn_pretty_original = syntax->ssyn_pretty;
+			syntax->ssyn_pretty = &emptyds_ssyn_pretty;
+		}
+	}
+
+	emptyds_instances++;
+	return LDAP_SUCCESS;
+}
+
+static int
+emptyds_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	Syntax *syntax = syn_find( ds_oid );
+
+	if ( --emptyds_instances == 0 && syntax != NULL ) {
+		if ( syntax->ssyn_validate == emptyds_ssyn_validate ) {
+			syntax->ssyn_validate = ssyn_validate_original;
+		}
+		ssyn_validate_original = NULL;
+
+		if ( syntax->ssyn_pretty == emptyds_ssyn_pretty ) {
+			syntax->ssyn_pretty = ssyn_pretty_original;
+		}
+		ssyn_pretty_original = NULL;
+	}
+
+	assert( emptyds_instances >= 0 );
+	return LDAP_SUCCESS;
+}
+
+int
+emptyds_init()
+{
+	emptyds.on_bi.bi_type = "emptyds";
+	emptyds.on_bi.bi_op_add = emptyds_op_add;
+	emptyds.on_bi.bi_op_modify = emptyds_op_modify;
+	emptyds.on_bi.bi_db_init = emptyds_db_init;
+	emptyds.on_bi.bi_db_destroy = emptyds_db_destroy;
+
+	return overlay_register( &emptyds );
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	return emptyds_init();
+}
diff --git a/contrib/slapd-modules/emptyds/slapo-emptyds.5 b/contrib/slapd-modules/emptyds/slapo-emptyds.5
new file mode 100644
index 0000000..75b1059
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/slapo-emptyds.5
@@ -0,0 +1,68 @@
+.TH SLAPO-EDS 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2022 The OpenLDAP Foundation, All Rights Reserved.
+.\" Copyright 2018 Tamim Ziai 
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapo-emptyds \- Remove Empty values from Directory String attributes
+Overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+Some non-conformant clients will provide empty values for Directory String
+attributes with certain operations. This overlay makes empty values acceptable
+for the Directory String syntax and will adjust all operations to make sure
+these values are never actually stored in the database.
+.LP
+.nf
+.ft tt
+	dn: cn=alex,cn=people,dc=example,dc=org
+	changeType: add                  changeType: add
+	sn: <empty>              -->     sn: blah
+	sn: blah
+
+	dn: cn=alex,cn=people,dc=example,dc=org
+	changeType: modify               changeType: modify
+	add: sn                  -->     add: sn
+	sn: <empty>                      sn: blah
+	sn: blah
+
+	dn: cn=alex,cn=people,dc=example,dc=org
+	changeType: modify               changeType: modify
+	delete: sn               -->     delete: sn
+	sn: <empty>                      sn: blah
+	sn: blah
+
+	dn: cn=alex,cn=people,dc=example,dc=org
+	changeType: modify               changeType: modify
+	replace: sn              -->     replace: sn
+	sn: <empty>
+
+	dn: cn=alex,cn=people,dc=example,dc=org
+	changeType: modify               changeType: modify
+	replace: sn              -->     replace: sn
+	sn: <empty>                      sn: blah
+	sn: blah
+.ft
+.fi
+.LP
+.SH CONFIGURATION
+This overlay has no specific configuration, however in order to ensure that it
+does what it needs to do, it should be the last overlay configured so it will
+run before the other overlays.
+.SH EXAMPLES
+.LP
+.RS
+.nf
+overlay emptyds
+.RE
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5).
+.SH ACKNOWLEDGEMENTS
+This module was written in 2014 by Tamim Ziai for DAASI International and
+updated in 2022 by Ondřej Kuzník for inclusion in the OpenLDAP project.
+.so ../Project
diff --git a/contrib/slapd-modules/emptyds/tests/Rules.mk b/contrib/slapd-modules/emptyds/tests/Rules.mk
new file mode 100644
index 0000000..c25c1d2
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/Rules.mk
@@ -0,0 +1,23 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+.PHONY: test
+
+CLEAN += clients servers tests/progs tests/schema tests/testdata tests/testrun
+
+test: all clients servers tests/progs
+
+test:
+	cd tests; \
+		SRCDIR=$(abspath $(LDAP_SRC)) \
+		LDAP_BUILD=$(abspath $(LDAP_BUILD)) \
+		TOPDIR=$(abspath $(SRCDIR)) \
+		LIBTOOL=$(abspath $(LIBTOOL)) \
+			$(abspath $(SRCDIR))/tests/run all
+
+servers clients tests/progs:
+	ln -s $(abspath $(LDAP_BUILD))/$@ $@
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))
diff --git a/contrib/slapd-modules/emptyds/tests/data/emptyds.conf b/contrib/slapd-modules/emptyds/tests/data/emptyds.conf
new file mode 100644
index 0000000..221fe81
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/data/emptyds.conf
@@ -0,0 +1,54 @@
+# basic slapd config -- for testing of slapo-emptyds
+# $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+
+include		@SCHEMADIR@/core.schema
+include		@SCHEMADIR@/cosine.schema
+include		@SCHEMADIR@/inetorgperson.schema
+include		@SCHEMADIR@/openldap.schema
+include		@SCHEMADIR@/nis.schema
+include		@DATADIR@/test.schema
+#
+pidfile		@TESTDIR@/slapd.1.pid
+argsfile	@TESTDIR@/slapd.1.args
+
+#mod#modulepath	../servers/slapd/back-@BACKEND@/
+#mod#moduleload	back_@BACKEND@.la
+#accesslogmod#modulepath ../servers/slapd/overlays/
+#accesslogmod#moduleload accesslog.la
+moduleload ../emptyds.la
+
+database	@BACKEND@
+suffix		"dc=example,dc=com"
+rootdn		"cn=Manager,dc=example,dc=com"
+rootpw		secret
+#~null~#directory	@TESTDIR@/db.1.a
+
+overlay accesslog
+logdb cn=log
+logops writes
+logsuccess true
+
+overlay emptyds
+
+database	@BACKEND@
+suffix		"cn=log"
+rootdn		"cn=Manager,dc=example,dc=com"
+#~null~#directory	@TESTDIR@/db.1.b
+
+## This one makes no difference except we want to make sure we can
+## safely instantiate the overlay on multiple databases
+overlay emptyds
+
+database	monitor
diff --git a/contrib/slapd-modules/emptyds/tests/data/test001.ldif b/contrib/slapd-modules/emptyds/tests/data/test001.ldif
new file mode 100644
index 0000000..b7f289a
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/data/test001.ldif
@@ -0,0 +1,71 @@
+# slapd prevents us from adding the same value multiple times
+dn: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+add: description
+description: one
+description: 
+description: two
+description: three
+description: four
+# a space is distinct from an empty value
+description:: ICAg
+-
+replace: drink
+drink: Earl Grey, hot
+-
+delete: description
+description: 
+-
+replace: drink
+drink: Earl Grey, hot
+
+# there is no such restriction on deletes, so we exercise this part of the overlay here
+dn: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+delete: description
+description: 
+description: four
+description: 
+description: three
+description: two
+description: 
+description: 
+description: one
+description: 
+-
+add: description
+description: 
+
+dn: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modify
+replace: drink
+drink: 
+
+dn: cn=All Staff,ou=Groups,dc=example,dc=com
+changetype: modify
+delete: member
+-
+add: member
+# an empty DN should not be stripped
+member: 
+member: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+
+dn: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+changetype: add
+objectclass: testPerson
+cn: Gern Jensen
+sn: Jensen
+uid: gjensen
+title: 
+postaladdress: ITD $ 535 W. William St $ Anytown, MI 48103
+seealso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Coffee
+homepostaladdress: 844 Brown St. Apt. 4 $ Anytown, MI 48104
+description: Very odd
+description: 
+description: More than you think
+facsimiletelephonenumber: +1 313 555 7557
+telephonenumber: +1 313 555 8343
+mail: gjensen@mailgw.example.com
+homephone: +1 313 555 8844
+testTime: 20050304001801.234Z
diff --git a/contrib/slapd-modules/emptyds/tests/data/test001.out b/contrib/slapd-modules/emptyds/tests/data/test001.out
new file mode 100644
index 0000000..6f41247
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/data/test001.out
@@ -0,0 +1,54 @@
+dn: reqStart=timestamp,cn=log
+reqDN: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+reqMod: description:+ one
+reqMod: description:+ two
+reqMod: description:+ three
+reqMod: description:+ four
+# "description:+    " that's a space, then 3 spaces for value
+reqMod:: ZGVzY3JpcHRpb246KyAgICA=
+reqMod: drink:= Earl Grey, hot
+# second mod was removed, so we have two replaces in succession now and need
+# to separate them (":")
+reqMod:: Og==
+reqMod: drink:= Earl Grey, hot
+
+dn: reqStart=timestamp,cn=log
+reqDN: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+reqMod: description:- four
+reqMod: description:- three
+reqMod: description:- two
+reqMod: description:- one
+# second mod is removed
+
+dn: reqStart=timestamp,cn=log
+reqDN: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+reqMod: drink:=
+
+dn: reqStart=timestamp,cn=log
+reqDN: cn=All Staff,ou=Groups,dc=example,dc=com
+reqMod: member:-
+# "member:+ " adding an empty DN
+reqMod:: bWVtYmVyOisg
+reqMod: member:+ cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example
+ ,dc=com
+
+dn: reqStart=timestamp,cn=log
+reqDN: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,
+ dc=com
+reqMod: objectClass:+ testPerson
+reqMod: cn:+ Gern Jensen
+reqMod: sn:+ Jensen
+reqMod: uid:+ gjensen
+reqMod: postalAddress:+ ITD $ 535 W. William St $ Anytown, MI 48103
+reqMod: seeAlso:+ cn=All Staff,ou=Groups,dc=example,dc=com
+reqMod: drink:+ Coffee
+reqMod: homePostalAddress:+ 844 Brown St. Apt. 4 $ Anytown, MI 48104
+reqMod: description:+ Very odd
+reqMod: description:+ More than you think
+reqMod: facsimileTelephoneNumber:+ +1 313 555 7557
+reqMod: telephoneNumber:+ +1 313 555 8343
+reqMod: mail:+ gjensen@mailgw.example.com
+reqMod: homePhone:+ +1 313 555 8844
+reqMod: testTime:+ 20050304001801.234Z
+reqMod: structuralObjectClass:+ testPerson
+
diff --git a/contrib/slapd-modules/emptyds/tests/run b/contrib/slapd-modules/emptyds/tests/run
new file mode 100755
index 0000000..e28820c
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/run
@@ -0,0 +1,218 @@
+#!/bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+USAGE="$0 [-b <backend>] [-c] [-k] [-l #] [-p] [-s {ro|rp}] [-u] [-w] <script>"
+
+TOPSRCDIR="${SRCDIR-$LDAP_SRC}"
+SRCDIR="${TOPSRCDIR}/tests"
+eval `grep EGREP_CMD= ${LDAP_BUILD}/tests/run`
+eval `$EGREP_CMD -e '^LN_S=' ${LDAP_BUILD}/tests/run`
+
+export SRCDIR TOPSRCDIR LN_S EGREP_CMD
+
+. "${SRCDIR}/scripts/defines.sh"
+
+BACKEND=
+CLEAN=no
+WAIT=0
+KILLSERVERS=yes
+PRESERVE=${PRESERVE-no}
+SYNCMODE=${SYNCMODE-rp}
+USERDATA=no
+LOOP=1
+COUNTER=1
+
+while test $# -gt 0 ; do
+	case "$1" in
+		-b | -backend)
+			BACKEND="$2"
+			shift; shift ;;
+
+		-c | -clean)
+			CLEAN=yes
+			shift ;;
+
+		-k | -kill)
+			KILLSERVERS=no
+			shift ;;
+		-l | -loop)
+			NUM="`echo $2 | sed 's/[0-9]//g'`"
+			if [ -z "$NUM" ]; then
+				LOOP=$2
+			else
+				echo "Loop variable not an int: $2"
+				echo "$USAGE"; exit 1
+			fi
+			shift ;
+			shift ;;
+
+		-p | -preserve)
+			PRESERVE=yes
+			shift ;;
+
+		-s | -syncmode)
+			case "$2" in
+				ro | rp)
+					SYNCMODE="$2"
+					;;
+				*)
+					echo "unknown sync mode $2"
+					echo "$USAGE"; exit 1
+					;;
+			esac
+			shift; shift ;;
+
+		-u | -userdata)
+			USERDATA=yes
+			shift ;;
+
+		-w | -wait)
+			WAIT=1
+			shift ;;
+
+		-)
+			shift
+			break ;;
+
+		-*)
+			echo "$USAGE"; exit 1
+			;;
+
+		*)
+			break ;;
+	esac
+done
+
+eval `$EGREP_CMD -e '^AC' ${LDAP_BUILD}/tests/run`
+export `$EGREP_CMD -e '^AC' ${LDAP_BUILD}/tests/run | sed 's/=.*//'`
+
+if test -z "$BACKEND" ; then
+	for b in mdb ; do
+		if eval "test \"\$AC_$b\" != no" ; then
+			BACKEND=$b
+			break
+		fi
+	done
+	if test -z "$BACKEND" ; then
+		echo "No suitable default database backend configured" >&2
+		exit 1
+	fi
+fi
+
+BACKENDTYPE=`eval 'echo $AC_'$BACKEND`
+if test "x$BACKENDTYPE" = "x" ; then
+	BACKENDTYPE="unknown"
+fi
+
+# Backend features.  indexdb: indexing and unchecked limit.
+# maindb: main storage backend.  Currently index,limits,mode,paged results.
+INDEXDB=noindexdb MAINDB=nomaindb
+case $BACKEND in
+	mdb) INDEXDB=indexdb MAINDB=maindb ;;
+esac
+
+export	BACKEND BACKENDTYPE INDEXDB MAINDB \
+	WAIT KILLSERVERS PRESERVE SYNCMODE USERDATA \
+	SRCDIR
+
+if test $# = 0 ; then
+	echo "$USAGE"; exit 1
+fi
+
+# need defines.sh for the definitions of the directories
+. $SRCDIR/scripts/defines.sh
+
+SCRIPTDIR="${TOPDIR}/tests/scripts"
+
+export SCRIPTDIR
+
+SCRIPTNAME="$1"
+shift
+
+if test -x "${SCRIPTDIR}/${SCRIPTNAME}" ; then
+	SCRIPT="${SCRIPTDIR}/${SCRIPTNAME}"
+elif test -x "`echo ${SCRIPTDIR}/test*-${SCRIPTNAME}`"; then
+	SCRIPT="`echo ${SCRIPTDIR}/test*-${SCRIPTNAME}`"
+elif test -x "`echo ${SCRIPTDIR}/${SCRIPTNAME}-*`"; then
+	SCRIPT="`echo ${SCRIPTDIR}/${SCRIPTNAME}-*`"
+else
+	echo "run: ${SCRIPTNAME} not found (or not executable)"
+	exit 1;
+fi
+
+if test ! -r ${DATADIR}/test.ldif ; then
+	${LN_S} ${SRCDIR}/data ${DATADIR}
+fi
+if test ! -r ${SCHEMADIR}/core.schema ; then
+	${LN_S} ${TOPSRCDIR}/servers/slapd/schema ${SCHEMADIR}
+fi
+if test ! -r ./data; then
+	${LN_S} ${TOPDIR}/tests/data ./
+fi
+
+if test -d ${TESTDIR} ; then
+	if test $PRESERVE = no ; then
+		echo "Cleaning up test run directory leftover from previous run."
+		/bin/rm -rf ${TESTDIR}
+	elif test $PRESERVE = yes ; then
+		echo "Cleaning up only database directories leftover from previous run."
+		/bin/rm -rf ${TESTDIR}/db.*
+	fi
+fi
+mkdir -p ${TESTDIR}
+
+if test $USERDATA = yes ; then
+	if test ! -d userdata ; then
+		echo "User data directory (userdata) does not exist."
+		exit 1
+	fi
+	cp -R userdata/* ${TESTDIR}
+fi
+
+# disable LDAP initialization
+LDAPNOINIT=true; export LDAPNOINIT
+
+echo "Running ${SCRIPT} for ${BACKEND}..."
+while [ $COUNTER -le $LOOP ]; do
+	if [ $LOOP -gt 1 ]; then
+		echo "Running $COUNTER of $LOOP iterations"
+	fi
+	$SCRIPT $*
+	RC=$?
+
+	if test $CLEAN = yes ; then
+		echo "Cleaning up test run directory from this run."
+		/bin/rm -rf ${TESTDIR}
+		echo "Cleaning up symlinks."
+		/bin/rm -f ${DATADIR} ${SCHEMADIR}
+	fi
+
+	if [ $RC -ne 0 ]; then
+		if [ $LOOP -gt 1 ]; then
+			echo "Failed after $COUNTER of $LOOP iterations"
+		fi
+		exit $RC
+	else
+		COUNTER=`expr $COUNTER + 1`
+		if [ $COUNTER -le $LOOP ]; then
+			echo "Cleaning up test run directory from this run."
+			/bin/rm -rf ${TESTDIR}
+		fi
+	fi
+done
+exit $RC
diff --git a/contrib/slapd-modules/emptyds/tests/scripts/all b/contrib/slapd-modules/emptyds/tests/scripts/all
new file mode 100755
index 0000000..a5c1774
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/scripts/all
@@ -0,0 +1,92 @@
+#! /bin/sh
+# $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+
+. $SRCDIR/scripts/defines.sh
+
+TB="" TN=""
+if test -t 1 ; then
+	TB=`$SHTOOL echo -e "%B" 2>/dev/null`
+	TN=`$SHTOOL echo -e "%b" 2>/dev/null`
+fi
+
+FAILCOUNT=0
+SKIPCOUNT=0
+SLEEPTIME=10
+
+echo ">>>>> Executing all LDAP tests for $BACKEND"
+
+if [ -n "$NOEXIT" ]; then
+	echo "Result	Test" > $TESTWD/results
+fi
+
+for CMD in ${SCRIPTDIR}/test*; do
+	case "$CMD" in
+		*~)		continue;;
+		*.bak)	continue;;
+		*.orig)	continue;;
+		*.sav)	continue;;
+		*)		test -f "$CMD" || continue;;
+	esac
+
+	# remove cruft from prior test
+	if test $PRESERVE = yes ; then
+		/bin/rm -rf $TESTDIR/db.*
+	else
+		/bin/rm -rf $TESTDIR
+	fi
+
+	BCMD=`basename $CMD`
+	if [ -x "$CMD" ]; then
+		echo ">>>>> Starting ${TB}$BCMD${TN} for $BACKEND..."
+		$CMD
+		RC=$?
+		if test $RC -eq 0 ; then
+			echo ">>>>> $BCMD completed ${TB}OK${TN} for $BACKEND."
+		else
+			echo ">>>>> $BCMD ${TB}failed${TN} for $BACKEND"
+			FAILCOUNT=`expr $FAILCOUNT + 1`
+
+			if [ -n "$NOEXIT" ]; then
+				echo "Continuing."
+			else
+				echo "(exit $RC)"
+				exit $RC
+			fi
+		fi
+	else
+		echo ">>>>> Skipping ${TB}$BCMD${TN} for $BACKEND."
+		SKIPCOUNT=`expr $SKIPCOUNT + 1`
+		RC="-"
+	fi
+
+	if [ -n "$NOEXIT" ]; then
+		echo "$RC	$BCMD" >> $TESTWD/results
+	fi
+
+#	echo ">>>>> waiting $SLEEPTIME seconds for things to exit"
+#	sleep $SLEEPTIME
+	echo ""
+done
+
+if [ -n "$NOEXIT" ]; then
+	if [ "$FAILCOUNT" -gt 0 ]; then
+		cat $TESTWD/results
+		echo "$FAILCOUNT tests for $BACKEND ${TB}failed${TN}. Please review the test log."
+	else
+		echo "All executed tests for $BACKEND ${TB}succeeded${TN}."
+	fi
+fi
+
+echo "$SKIPCOUNT tests for $BACKEND were ${TB}skipped${TN}."
diff --git a/contrib/slapd-modules/emptyds/tests/scripts/test001-emptyds b/contrib/slapd-modules/emptyds/tests/scripts/test001-emptyds
new file mode 100755
index 0000000..b8d715a
--- /dev/null
+++ b/contrib/slapd-modules/emptyds/tests/scripts/test001-emptyds
@@ -0,0 +1,137 @@
+#! /bin/sh
+# $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2019 by Tamim Ziai for DAASI International
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+LDIF=${TOPDIR}/tests/data/test001.out
+
+if test $ACCESSLOG = accesslogno; then
+	echo "Accesslog overlay not available, test skipped"
+	exit 0
+fi
+
+mkdir -p $TESTDIR $DBDIR1A $DBDIR1B
+
+. $CONFFILTER $BACKEND < "${TOPDIR}/tests/data/emptyds.conf" > $CONF1
+
+echo "Running slapadd to build slapd database... "
+$SLAPADD -f $CONF1 -l $LDIFORDERED
+RC=$?
+if test $RC != 0 ; then
+	echo "slapadd failed ($RC)!"
+	exit $RC
+fi
+
+echo "Starting slapd on TCP/IP port $PORT1..."
+$SLAPD -f $CONF1 -h $URI1 -d $LVL >> $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "Checking add/modify handling... "
+
+$LDAPMODIFY -D "$MANAGERDN" -H $URI1 -w $PASSWD \
+	> $TESTOUT -f "${TOPDIR}/tests/data/test001.ldif"
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Checking modrdn handling (should still fail with invalidDNSyntax)... "
+
+$LDAPMODIFY -D "$MANAGERDN" -H $URI1 -w $PASSWD \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+changetype: modrdn
+newrdn: cn=
+deleteoldrdn: 0
+EOMOD
+RC=$?
+case $RC in
+34)
+	echo "	ldapmodify failed ($RC)"
+	;;
+0)
+	echo "	ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+*)
+	echo "	ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Dumping accesslog..."
+
+$LDAPSEARCH -b "cn=log" -H $URI1 \
+	'objectClass=auditWriteObject' reqDN reqMod | \
+	grep -v -e 'entryCSN' -e '\(create\|modify\)Timestamp' \
+		-e '\(modifier\|creator\)sName' -e 'entryUUID' | \
+	sed -e 's/reqStart=[^,]*,/reqStart=timestamp,/' \
+	> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+# Expectations:
+# - all empty values for directoryString pruned
+# - empty adds/deletes removed, empty replaces kept
+# - remaining values keep the same order as submitted
+# - other syntaxes (especially DNs) are kept intact
+echo "Filtering ldapsearch results..."
+$LDIFFILTER < $SEARCHOUT > $SEARCHFLT
+$LDIFFILTER < $LDIF > $LDIFFLT
+
+echo "Comparing filter output..."
+$CMP $LDIFFLT $SEARCHFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/kinit/Makefile b/contrib/slapd-modules/kinit/Makefile
new file mode 100644
index 0000000..7b25ced
--- /dev/null
+++ b/contrib/slapd-modules/kinit/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB) -lkrb5
+
+PROGRAMS = kinit.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+kinit.la: kinit.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/kinit/README b/contrib/slapd-modules/kinit/README
new file mode 100644
index 0000000..7e3ebe8
--- /dev/null
+++ b/contrib/slapd-modules/kinit/README
@@ -0,0 +1,36 @@
+This directory contains the "kinit" slapd module. It is a simple plugin to
+have slapd request a Kerberos TGT and keep it renewed as long as slapd is
+running.
+
+The current implementation has only been tested against the MIT variant of
+the Kerberos libraries. (Heimdal support might come later)
+
+To use the overlay just load it into the slapd process:
+
+    moduleload </path/to>/kinit.so <principal> </path/to/key.tab>
+
+The module accepts two arguments. The first one being the principal for which
+to request the TGT (it defaults to "ldap/<your hostname>@<DEFAULTREALM>")
+and the second one is the path to the keytab file to use for
+authentication, defaulting to whatever your system wide kerberos settings
+default to).
+
+Use Makefile or the following commands should work to
+build it from inside the unpacked slapd sources, provided the required KRB5
+header files and libraries are installed on your system:
+
+    gcc -fPIC -c -I ../../../include/ -I ../../../servers/slapd kinit.c
+    gcc -shared -o kinit.so kinit.o -lkrb5
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2010-2022 The OpenLDAP Foundation.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
diff --git a/contrib/slapd-modules/kinit/kinit.c b/contrib/slapd-modules/kinit/kinit.c
new file mode 100644
index 0000000..630b6bf
--- /dev/null
+++ b/contrib/slapd-modules/kinit/kinit.c
@@ -0,0 +1,295 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2010-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include <portable.h>
+
+#ifndef SLAPD_MOD_KINIT
+#define SLAPD_MOD_KINIT SLAPD_MOD_DYNAMIC
+#endif
+
+#ifdef SLAPD_MOD_KINIT
+
+#include <slap.h>
+#include "ldap_rq.h"
+#include <ac/errno.h>
+#include <ac/string.h>
+#include <krb5/krb5.h>
+
+typedef struct kinit_data {
+	krb5_context ctx;
+	krb5_ccache ccache;
+	krb5_keytab keytab;
+	krb5_principal princ;
+	krb5_get_init_creds_opt *opts;
+} kinit_data;
+
+static char* principal;
+static char* kt_name;
+static kinit_data *kid;
+
+static void
+log_krb5_errmsg( krb5_context ctx, const char* func, krb5_error_code rc )
+{
+	const char* errmsg = krb5_get_error_message(ctx, rc);
+	Log(LDAP_DEBUG_ANY, LDAP_LEVEL_ERR, "slapd-kinit: %s: %s\n", func, errmsg );
+	krb5_free_error_message(ctx, errmsg);
+	return;
+}
+
+static int
+kinit_check_tgt(kinit_data *kid, int *remaining)
+{
+	int ret=3;
+	krb5_principal princ;
+	krb5_error_code rc;
+	krb5_cc_cursor cursor;
+	krb5_creds creds;
+	char *name;
+	time_t now=time(NULL);
+
+	rc = krb5_cc_get_principal(kid->ctx, kid->ccache, &princ);
+	if (rc) {
+		log_krb5_errmsg(kid->ctx, "krb5_cc_get_principal", rc);
+		return 2;
+	} else {
+		if (!krb5_principal_compare(kid->ctx, kid->princ, princ)) {
+			Log(LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+					"Principal in ccache does not match requested principal\n");
+			krb5_free_principal(kid->ctx, princ);
+			return 2;
+		}
+	}
+
+	rc = krb5_cc_start_seq_get(kid->ctx, kid->ccache, &cursor);
+	if (rc) {
+		log_krb5_errmsg(kid->ctx, "krb5_cc_start_seq_get", rc);
+		krb5_free_principal(kid->ctx, princ);
+		return -1;
+	}
+
+	while (!(rc = krb5_cc_next_cred(kid->ctx, kid->ccache, &cursor, &creds))) {
+		if (krb5_is_config_principal(kid->ctx, creds.server)) {
+			krb5_free_cred_contents(kid->ctx, &creds);
+			continue;
+		}
+
+		if (creds.server->length==2 &&
+				(!strcmp(creds.server->data[0].data, "krbtgt")) &&
+				(!strcmp(creds.server->data[1].data, princ->realm.data))) {
+
+			krb5_unparse_name(kid->ctx, creds.server, &name);
+
+			*remaining = (time_t)creds.times.endtime-now;
+			if ( *remaining <= 0) {
+				Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+						"kinit_qtask: TGT (%s) expired\n", name);
+			} else {
+				Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+						"kinit_qtask: TGT (%s) expires in %dh:%02dm:%02ds\n",
+						name, *remaining/3600, (*remaining%3600)/60, *remaining%60);
+			}
+			free(name);
+
+			if (*remaining <= 30) {
+				if (creds.times.renew_till-60 > now) {
+					int renewal=creds.times.renew_till-now;
+					Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+							"kinit_qtask: Time remaining for renewal: %dh:%02dm:%02ds\n",
+							renewal/3600, (renewal%3600)/60,  renewal%60);
+					ret = 1;
+				} else {
+					Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+							"kinit_qtask: Only short time left for renewal. "
+							"Trying to re-init.\n");
+					ret = 2;
+				}
+			} else {
+				ret=0;
+			}
+			krb5_free_cred_contents(kid->ctx, &creds);
+			break;
+		}
+		krb5_free_cred_contents(kid->ctx, &creds);
+
+	}
+	krb5_cc_end_seq_get(kid->ctx, kid->ccache, &cursor);
+	krb5_free_principal(kid->ctx, princ);
+	return ret;
+}
+
+void*
+kinit_qtask( void *ctx, void *arg )
+{
+	struct re_s     *rtask = arg;
+	kinit_data	*kid = (kinit_data*)rtask->arg;
+	krb5_error_code rc;
+	krb5_creds creds;
+	int nextcheck, remaining, renew=0;
+	Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "kinit_qtask: running TGT check\n" );
+
+	memset(&creds, 0, sizeof(creds));
+
+	renew = kinit_check_tgt(kid, &remaining);
+
+	if (renew > 0) {
+		if (renew==1) {
+			Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+					"kinit_qtask: Trying to renew TGT: ");
+			rc = krb5_get_renewed_creds(kid->ctx, &creds, kid->princ, kid->ccache, NULL);
+			if (rc!=0) {
+				Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "Failed\n" );
+				log_krb5_errmsg( kid->ctx,
+						"kinit_qtask, Renewal failed: krb5_get_renewed_creds", rc );
+				renew++;
+			} else {
+				Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "Success\n" );
+				krb5_cc_initialize(kid->ctx, kid->ccache, creds.client);
+				krb5_cc_store_cred(kid->ctx, kid->ccache, &creds);
+				krb5_free_cred_contents(kid->ctx, &creds);
+				renew=kinit_check_tgt(kid, &remaining);
+			}
+		}
+		if (renew > 1) {
+			Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+					"kinit_qtask: Trying to get new TGT: ");
+			rc = krb5_get_init_creds_keytab( kid->ctx, &creds, kid->princ,
+					kid->keytab, 0, NULL, kid->opts);
+			if (rc) {
+				Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "Failed\n" );
+				log_krb5_errmsg(kid->ctx, "krb5_get_init_creds_keytab", rc);
+			} else {
+				Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "Success\n" );
+				renew=kinit_check_tgt(kid, &remaining);
+			}
+			krb5_free_cred_contents(kid->ctx, &creds);
+		}
+	}
+	if (renew == 0) {
+		nextcheck = remaining-30;
+	} else {
+		nextcheck = 60;
+	}
+
+	ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
+	if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
+		ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
+	}
+	Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG,
+			"kinit_qtask: Next TGT check in %dh:%02dm:%02ds\n",
+			nextcheck/3600, (nextcheck%3600)/60,  nextcheck%60);
+	rtask->interval.tv_sec = nextcheck;
+	ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
+	slap_wake_listener();
+	ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+	return NULL;
+}
+
+int
+kinit_initialize(void)
+{
+	Log( LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "kinit_initialize\n" );
+	krb5_error_code rc;
+	struct re_s *task = NULL;
+
+	kid = ch_calloc(1, sizeof(kinit_data) );
+
+	rc = krb5_init_context( &kid->ctx );
+	if ( !rc )
+		rc = krb5_cc_default(kid->ctx, &kid->ccache );
+
+	if ( !rc ) {
+		if (!principal) {
+			int len=STRLENOF("ldap/")+global_host_bv.bv_len+1;
+			principal=ch_calloc(len, 1);
+			snprintf(principal, len, "ldap/%s", global_host_bv.bv_val);
+			Log(LDAP_DEBUG_TRACE, LDAP_LEVEL_DEBUG, "Principal <%s>\n", principal );
+
+		}
+		rc = krb5_parse_name(kid->ctx, principal, &kid->princ);
+	}
+
+	if ( !rc && kt_name) {
+		rc = krb5_kt_resolve(kid->ctx, kt_name, &kid->keytab);
+	}
+
+	if ( !rc )
+		rc = krb5_get_init_creds_opt_alloc(kid->ctx, &kid->opts);
+
+	if ( !rc )
+		rc = krb5_get_init_creds_opt_set_out_ccache( kid->ctx, kid->opts, kid->ccache);
+
+	if ( !rc ) {
+		ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
+		task = ldap_pvt_runqueue_insert( &slapd_rq, 10, kinit_qtask, (void*)kid,
+				"kinit_qtask", "ldap/bronsted.g17.lan@G17.LAN" );
+		ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+	}
+
+	if (rc) {
+		log_krb5_errmsg(kid->ctx, "kinit_initialize", rc);
+		rc = -1;
+	}
+	return rc;
+}
+
+#if SLAPD_MOD_KINIT == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	if (argc > 0) {
+		principal = ch_strdup(argv[0]);
+	}
+	if (argc > 1) {
+		kt_name = ch_strdup(argv[1]);
+	}
+	if (argc > 2) {
+		return -1;
+	}
+	return kinit_initialize();
+}
+
+int
+term_module() {
+	if (principal)
+		ch_free(principal);
+	if (kt_name)
+		ch_free(kt_name);
+	if (kid) {
+		struct re_s *task;
+
+		task=ldap_pvt_runqueue_find( &slapd_rq, kinit_qtask, (void*)kid);
+		if (task) {
+			if ( ldap_pvt_runqueue_isrunning(&slapd_rq, task) ) {
+				ldap_pvt_runqueue_stoptask(&slapd_rq, task);
+			}
+			ldap_pvt_runqueue_remove(&slapd_rq, task);
+		}
+		if ( kid->ctx ) {
+			if ( kid->princ )
+				krb5_free_principal(kid->ctx, kid->princ);
+			if ( kid->ccache )
+				krb5_cc_close(kid->ctx, kid->ccache);
+			if ( kid->keytab )
+				krb5_kt_close(kid->ctx, kid->keytab);
+			if ( kid->opts )
+				krb5_get_init_creds_opt_free(kid->ctx, kid->opts);
+			krb5_free_context(kid->ctx);
+		}
+		ch_free(kid);
+	}
+	return 0;
+}
+#endif
+
+#endif /* SLAPD_MOD_KINIT */
+
diff --git a/contrib/slapd-modules/lastbind/Makefile b/contrib/slapd-modules/lastbind/Makefile
new file mode 100644
index 0000000..c273cd3
--- /dev/null
+++ b/contrib/slapd-modules/lastbind/Makefile
@@ -0,0 +1,68 @@
+# $OpenLDAP$
+# Copyright 2009 Jonathan Clarke <jonathan@phillipoux.net>.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_LASTBIND=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = lastbind.la
+MANPAGES = slapo-lastbind.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+lastbind.la: lastbind.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/lastbind/lastbind.c b/contrib/slapd-modules/lastbind/lastbind.c
new file mode 100644
index 0000000..bd8e782
--- /dev/null
+++ b/contrib/slapd-modules/lastbind/lastbind.c
@@ -0,0 +1,320 @@
+/* lastbind.c - Record timestamp of the last successful bind to entries */
+/* $OpenLDAP$ */
+/*
+ * Copyright 2009 Jonathan Clarke <jonathan@phillipoux.net>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work is loosely derived from the ppolicy overlay.
+ */
+
+#include "portable.h"
+
+/*
+ * This file implements an overlay that stores the timestamp of the
+ * last successful bind operation in a directory entry.
+ *
+ * Optimization: to avoid performing a write on each bind,
+ * a precision for this timestamp may be configured, causing it to
+ * only be updated if it is older than a given number of seconds.
+ */
+
+#ifdef SLAPD_OVER_LASTBIND
+
+#include <ldap.h>
+#include "lutil.h"
+#include "slap.h"
+#include <ac/errno.h>
+#include <ac/time.h>
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include "slap-config.h"
+
+/* Per-instance configuration information */
+typedef struct lastbind_info {
+	/* precision to update timestamp in authTimestamp attribute */
+	int timestamp_precision;
+	int forward_updates;	/* use frontend for authTimestamp updates */
+} lastbind_info;
+
+/* Operational attributes */
+static AttributeDescription *ad_authTimestamp;
+
+/* This is the definition used by ISODE, as supplied to us in
+ * ITS#6238 Followup #9
+ */
+static struct schema_info {
+	char *def;
+	AttributeDescription **ad;
+} lastBind_OpSchema[] = {
+	{	"( 1.3.6.1.4.1.453.16.2.188 "
+		"NAME 'authTimestamp' "
+		"DESC 'last successful authentication using any method/mech' "
+		"EQUALITY generalizedTimeMatch "
+		"ORDERING generalizedTimeOrderingMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
+		"SINGLE-VALUE NO-USER-MODIFICATION USAGE dsaOperation )",
+		&ad_authTimestamp},
+	{ NULL, NULL }
+};
+
+/* configuration attribute and objectclass */
+static ConfigTable lastbindcfg[] = {
+	{ "lastbind-precision", "seconds", 2, 2, 0,
+	  ARG_INT|ARG_OFFSET,
+	  (void *)offsetof(lastbind_info, timestamp_precision),
+	  "( OLcfgCtAt:5.1 "
+	  "NAME 'olcLastBindPrecision' "
+	  "DESC 'Precision of authTimestamp attribute' "
+	  "EQUALITY integerMatch "
+	  "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
+	{ "lastbind_forward_updates", "on|off", 1, 2, 0,
+	  ARG_ON_OFF|ARG_OFFSET,
+	  (void *)offsetof(lastbind_info,forward_updates),
+	  "( OLcfgAt:5.2 NAME 'olcLastBindForwardUpdates' "
+	  "DESC 'Allow authTimestamp updates to be forwarded via updateref' "
+	  "EQUALITY booleanMatch "
+	  "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs lastbindocs[] = {
+	{ "( OLcfgCtOc:5.1 "
+	  "NAME 'olcLastBindConfig' "
+	  "DESC 'Last Bind configuration' "
+	  "SUP olcOverlayConfig "
+	  "MAY ( olcLastBindPrecision $ olcLastBindForwardUpdates) )",
+	  Cft_Overlay, lastbindcfg, NULL, NULL },
+	{ NULL, 0, NULL }
+};
+
+static time_t
+parse_time( char *atm )
+{
+	struct lutil_tm tm;
+	struct lutil_timet tt;
+	time_t ret = (time_t)-1;
+
+	if ( lutil_parsetime( atm, &tm ) == 0) {
+		lutil_tm2time( &tm, &tt );
+		ret = tt.tt_sec;
+	}
+	return ret;
+}
+
+static int
+lastbind_bind_response( Operation *op, SlapReply *rs )
+{
+	Modifications *mod = NULL;
+	BackendInfo *bi = op->o_bd->bd_info;
+	Entry *e;
+	int rc;
+
+	/* we're only interested if the bind was successful */
+	if ( rs->sr_err != LDAP_SUCCESS )
+		return SLAP_CB_CONTINUE;
+
+	rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
+	op->o_bd->bd_info = bi;
+
+	if ( rc != LDAP_SUCCESS ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	{
+		lastbind_info *lbi = (lastbind_info *) op->o_callback->sc_private;
+
+		time_t now, bindtime = (time_t)-1;
+		Attribute *a;
+		Modifications *m;
+		char nowstr[ LDAP_LUTIL_GENTIME_BUFSIZE ];
+		struct berval timestamp;
+
+		/* get the current time */
+		now = slap_get_time();
+
+		/* get authTimestamp attribute, if it exists */
+		if ((a = attr_find( e->e_attrs, ad_authTimestamp)) != NULL) {
+			bindtime = parse_time( a->a_nvals[0].bv_val );
+
+			if (bindtime != (time_t)-1) {
+				/* if the recorded bind time is within our precision, we're done
+				 * it doesn't need to be updated (save a write for nothing) */
+				if ((now - bindtime) < lbi->timestamp_precision) {
+					goto done;
+				}
+			}
+		}
+
+		/* update the authTimestamp in the user's entry with the current time */
+		timestamp.bv_val = nowstr;
+		timestamp.bv_len = sizeof(nowstr);
+		slap_timestamp( &now, &timestamp );
+
+		m = ch_calloc( sizeof(Modifications), 1 );
+		m->sml_op = LDAP_MOD_REPLACE;
+		m->sml_flags = 0;
+		m->sml_type = ad_authTimestamp->ad_cname;
+		m->sml_desc = ad_authTimestamp;
+		m->sml_numvals = 1;
+		m->sml_values = ch_calloc( sizeof(struct berval), 2 );
+		m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
+
+		ber_dupbv( &m->sml_values[0], &timestamp );
+		ber_dupbv( &m->sml_nvalues[0], &timestamp );
+		m->sml_next = mod;
+		mod = m;
+	}
+
+done:
+	be_entry_release_r( op, e );
+
+	/* perform the update, if necessary */
+	if ( mod ) {
+		Operation op2 = *op;
+		SlapReply r2 = { REP_RESULT };
+		slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
+		LDAPControl c, *ca[2];
+		lastbind_info *lbi = (lastbind_info *) op->o_callback->sc_private;
+
+		/* This is a DSA-specific opattr, it never gets replicated. */
+		op2.o_tag = LDAP_REQ_MODIFY;
+		op2.o_callback = &cb;
+		op2.orm_modlist = mod;
+		op2.orm_no_opattrs = 0;
+		op2.o_dn = op->o_bd->be_rootdn;
+		op2.o_ndn = op->o_bd->be_rootndn;
+
+		/*
+		 * Code for forwarding of updates adapted from ppolicy.c of slapo-ppolicy
+		 *
+		 * If this server is a shadow and forward_updates is true,
+		 * use the frontend to perform this modify. That will trigger
+		 * the update referral, which can then be forwarded by the
+		 * chain overlay. Obviously the updateref and chain overlay
+		 * must be configured appropriately for this to be useful.
+		 */
+		if ( SLAP_SHADOW( op->o_bd ) && lbi->forward_updates ) {
+			op2.o_bd = frontendDB;
+
+			/* Must use Relax control since these are no-user-mod */
+			op2.o_relax = SLAP_CONTROL_CRITICAL;
+			op2.o_ctrls = ca;
+			ca[0] = &c;
+			ca[1] = NULL;
+			BER_BVZERO( &c.ldctl_value );
+			c.ldctl_iscritical = 1;
+			c.ldctl_oid = LDAP_CONTROL_RELAX;
+		} else {
+			/* If not forwarding, don't update opattrs and don't replicate */
+			if ( SLAP_SINGLE_SHADOW( op->o_bd )) {
+				op2.orm_no_opattrs = 1;
+				op2.o_dont_replicate = 1;
+			}
+			/* TODO: not sure what this does in slapo-ppolicy */
+			/*
+			op2.o_bd->bd_info = (BackendInfo *)on->on_info;
+			*/
+		}
+
+		rc = op2.o_bd->be_modify( &op2, &r2 );
+		slap_mods_free( mod, 1 );
+	}
+
+	op->o_bd->bd_info = bi;
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+lastbind_bind( Operation *op, SlapReply *rs )
+{
+	slap_callback *cb;
+	slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+
+	/* setup a callback to intercept result of this bind operation
+	 * and pass along the lastbind_info struct */
+	cb = op->o_tmpcalloc( sizeof(slap_callback), 1, op->o_tmpmemctx );
+	cb->sc_response = lastbind_bind_response;
+	cb->sc_next = op->o_callback->sc_next;
+	cb->sc_private = on->on_bi.bi_private;
+	op->o_callback->sc_next = cb;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+lastbind_db_init(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst *on = (slap_overinst *) be->bd_info;
+
+	/* initialize private structure to store configuration */
+	on->on_bi.bi_private = ch_calloc( 1, sizeof(lastbind_info) );
+
+	return 0;
+}
+
+static int
+lastbind_db_close(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst *on = (slap_overinst *) be->bd_info;
+	lastbind_info *lbi = (lastbind_info *) on->on_bi.bi_private;
+
+	/* free private structure to store configuration */
+	free( lbi );
+
+	return 0;
+}
+
+static slap_overinst lastbind;
+
+int lastbind_initialize()
+{
+	int i, code;
+
+	/* register operational schema for this overlay (authTimestamp attribute) */
+	for (i=0; lastBind_OpSchema[i].def; i++) {
+		code = register_at( lastBind_OpSchema[i].def, lastBind_OpSchema[i].ad, 0 );
+		if ( code ) {
+			Debug( LDAP_DEBUG_ANY,
+				"lastbind_initialize: register_at failed\n" );
+			return code;
+		}
+	}
+
+	ad_authTimestamp->ad_type->sat_flags |= SLAP_AT_MANAGEABLE;
+
+	lastbind.on_bi.bi_type = "lastbind";
+	lastbind.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	lastbind.on_bi.bi_db_init = lastbind_db_init;
+	lastbind.on_bi.bi_db_close = lastbind_db_close;
+	lastbind.on_bi.bi_op_bind = lastbind_bind;
+
+	/* register configuration directives */
+	lastbind.on_bi.bi_cf_ocs = lastbindocs;
+	code = config_register_schema( lastbindcfg, lastbindocs );
+	if ( code ) return code;
+
+	return overlay_register( &lastbind );
+}
+
+#if SLAPD_OVER_LASTBIND == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	return lastbind_initialize();
+}
+#endif
+
+#endif	/* defined(SLAPD_OVER_LASTBIND) */
diff --git a/contrib/slapd-modules/lastbind/slapo-lastbind.5 b/contrib/slapd-modules/lastbind/slapo-lastbind.5
new file mode 100644
index 0000000..d0da8b8
--- /dev/null
+++ b/contrib/slapd-modules/lastbind/slapo-lastbind.5
@@ -0,0 +1,108 @@
+.TH SLAPO-LASTBIND 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2009 Jonathan Clarke, All Rights Reserved.
+.\" $OpenLDAP$
+.SH NAME
+slapo-lastbind \- lastbind overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+The
+.B lastbind
+overlay to
+.BR slapd (8)
+allows recording the timestamp of the last successful bind to entries
+in the directory, in the
+.B authTimestamp
+attribute.
+The overlay can be configured to update this timestamp only if it is
+older than a given value, thus avoiding large numbers of write
+operations penalizing performance.
+One sample use for this overlay would be to detect unused accounts.
+
+.SH CONFIGURATION
+The config directives that are specific to the
+.B lastbind
+overlay must be prefixed by
+.BR lastbind\- ,
+to avoid potential conflicts with directives specific to the underlying 
+database or to other stacked overlays.
+
+.TP
+.B overlay lastbind
+This directive adds the
+.B lastbind
+overlay to the current database, see
+.BR slapd.conf (5)
+for details.
+
+.LP
+This
+.B slapd.conf
+configuration option is defined for the lastbind overlay. It must
+appear after the
+.B overlay
+directive:
+.TP
+.B lastbind-precision <seconds>
+The value 
+.B <seconds>
+is the number of seconds after which to update the
+.B authTimestamp
+attribute in an entry. If the existing value of
+.B authTimestamp
+is less than 
+.B <seconds>
+old, it will not be changed. 
+If this configuration option is omitted, the
+.B authTimestamp
+attribute is updated on each successful bind operation.
+.TP
+.B lastbind_forward_updates
+Specify that updates of the authTimestamp attribute
+on a consumer should be forwarded
+to a provider instead of being written directly into the consumer's local
+database. This setting is only useful on a replication consumer, and
+also requires the
+.B updateref
+setting and
+.B chain
+overlay to be appropriately configured.
+
+.SH EXAMPLE
+This example configures the
+.B lastbind
+overlay to store
+.B authTimestamp
+in all entries in a database, with a 1 week precision.
+Add the following to
+.BR slapd.conf (5):
+
+.LP
+.nf
+    database <database>
+    # ...
+
+    overlay lastbind
+    lastbind-precision 604800
+.fi
+.LP
+.B slapd
+must also load
+.B lastbind.la,
+if compiled as a run-time module;
+
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR slapd (8).
+The
+.BR slapo-lastbind (5)
+overlay supports dynamic configuration via
+.BR back-config.
+.SH ACKNOWLEDGEMENTS
+.P
+This module was written in 2009 by Jonathan Clarke. It is loosely
+derived from the password policy overlay.
diff --git a/contrib/slapd-modules/lastmod/Makefile b/contrib/slapd-modules/lastmod/Makefile
new file mode 100644
index 0000000..9b06c28
--- /dev/null
+++ b/contrib/slapd-modules/lastmod/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_LASTMOD=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = lastmod.la
+MANPAGES = slapo-lastmod.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+lastmod.la: lastmod.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/lastmod/lastmod.c b/contrib/slapd-modules/lastmod/lastmod.c
new file mode 100644
index 0000000..116b9ae
--- /dev/null
+++ b/contrib/slapd-modules/lastmod/lastmod.c
@@ -0,0 +1,963 @@
+/* lastmod.c - returns last modification info */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion in
+ * OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_LASTMOD
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "lutil.h"
+
+typedef struct lastmod_info_t {
+	struct berval		lmi_rdnvalue;
+	Entry			*lmi_e;
+	ldap_pvt_thread_mutex_t	lmi_entry_mutex;
+	int			lmi_enabled;
+} lastmod_info_t;
+
+struct lastmod_schema_t {
+	ObjectClass		*lms_oc_lastmod;
+	AttributeDescription	*lms_ad_lastmodDN;
+	AttributeDescription	*lms_ad_lastmodType;
+	AttributeDescription	*lms_ad_lastmodEnabled;
+} lastmod_schema;
+
+enum lastmodType_e {
+	LASTMOD_ADD = 0,
+	LASTMOD_DELETE,
+	LASTMOD_EXOP,
+	LASTMOD_MODIFY,
+	LASTMOD_MODRDN,
+	LASTMOD_UNKNOWN
+};
+
+struct berval lastmodType[] = {
+	BER_BVC( "add" ),
+	BER_BVC( "delete" ),
+	BER_BVC( "exop" ),
+	BER_BVC( "modify" ),
+	BER_BVC( "modrdn" ),
+	BER_BVC( "unknown" ),
+	BER_BVNULL
+};
+
+static struct m_s {
+	char			*schema;
+	slap_mask_t 		flags;
+	int			offset;
+} moc[] = {
+	{ "( 1.3.6.1.4.1.4203.666.3.13"
+		"NAME 'lastmod' "
+		"DESC 'OpenLDAP per-database last modification monitoring' "
+		"STRUCTURAL "
+		"SUP top "
+		"MUST cn "
+		"MAY ( "
+			"lastmodDN "
+			"$ lastmodType "
+			"$ description "
+			"$ seeAlso "
+		") )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
+		offsetof( struct lastmod_schema_t, lms_oc_lastmod ) },
+	{ NULL }
+}, mat[] = {
+	{ "( 1.3.6.1.4.1.4203.666.1.28"
+		"NAME 'lastmodDN' "
+		"DESC 'DN of last modification' "
+		"EQUALITY distinguishedNameMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
+		"NO-USER-MODIFICATION "
+		"USAGE directoryOperation )", SLAP_AT_HIDE,
+		offsetof( struct lastmod_schema_t, lms_ad_lastmodDN ) },
+	{ "( 1.3.6.1.4.1.4203.666.1.29"
+		"NAME 'lastmodType' "
+		"DESC 'Type of last modification' "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 "
+		"EQUALITY caseIgnoreMatch "
+		"SINGLE-VALUE "
+		"NO-USER-MODIFICATION "
+		"USAGE directoryOperation )", SLAP_AT_HIDE,
+		offsetof( struct lastmod_schema_t, lms_ad_lastmodType ) },
+	{ "( 1.3.6.1.4.1.4203.666.1.30"
+		"NAME 'lastmodEnabled' "
+		"DESC 'Lastmod overlay state' "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
+		"EQUALITY booleanMatch "
+		"SINGLE-VALUE )", 0,
+		offsetof( struct lastmod_schema_t, lms_ad_lastmodEnabled ) },
+	{ NULL }
+
+	/* FIXME: what about UUID of last modified entry? */
+};
+
+static int
+lastmod_search( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+	int			rc;
+
+	/* if we get here, it must be a success */
+	rs->sr_err = LDAP_SUCCESS;
+
+	ldap_pvt_thread_mutex_lock( &lmi->lmi_entry_mutex );
+
+	rc = test_filter( op, lmi->lmi_e, op->oq_search.rs_filter );
+	if ( rc == LDAP_COMPARE_TRUE ) {
+		rs->sr_attrs = op->ors_attrs;
+		rs->sr_flags = 0;
+		rs->sr_entry = lmi->lmi_e;
+		rs->sr_err = send_search_entry( op, rs );
+		rs->sr_entry = NULL;
+		rs->sr_flags = 0;
+		rs->sr_attrs = NULL;
+	}
+
+	ldap_pvt_thread_mutex_unlock( &lmi->lmi_entry_mutex );
+
+	send_ldap_result( op, rs );
+
+	return 0;
+}
+
+static int
+lastmod_compare( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+	Attribute		*a;
+
+	ldap_pvt_thread_mutex_lock( &lmi->lmi_entry_mutex );
+
+	if ( get_assert( op ) &&
+		( test_filter( op, lmi->lmi_e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
+	{
+		rs->sr_err = LDAP_ASSERTION_FAILED;
+		goto return_results;
+	}
+
+	rs->sr_err = access_allowed( op, lmi->lmi_e, op->oq_compare.rs_ava->aa_desc,
+		&op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
+	if ( ! rs->sr_err ) {
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		goto return_results;
+	}
+
+	rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
+
+	for ( a = attr_find( lmi->lmi_e->e_attrs, op->oq_compare.rs_ava->aa_desc );
+		a != NULL;
+		a = attr_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) )
+	{
+		rs->sr_err = LDAP_COMPARE_FALSE;
+
+		if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
+			SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+				SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+			a->a_nvals, &op->oq_compare.rs_ava->aa_value, op->o_tmpmemctx ) == 0 )
+		{
+			rs->sr_err = LDAP_COMPARE_TRUE;
+			break;
+		}
+	}
+
+return_results:;
+
+	ldap_pvt_thread_mutex_unlock( &lmi->lmi_entry_mutex );
+
+	send_ldap_result( op, rs );
+
+	if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
+		rs->sr_err = LDAP_SUCCESS;
+	}
+
+	return rs->sr_err;
+}
+
+static int
+lastmod_exop( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+
+	/* Temporary */
+
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+	rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+	rs->sr_text = "not allowed within namingContext";
+	send_ldap_result( op, rs );
+	rs->sr_text = NULL;
+	
+	return -1;
+}
+
+static int
+lastmod_modify( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+	Modifications		*ml;
+
+	ldap_pvt_thread_mutex_lock( &lmi->lmi_entry_mutex );
+
+	if ( !acl_check_modlist( op, lmi->lmi_e, op->orm_modlist ) ) {
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		goto cleanup;
+	}
+
+	for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
+		Attribute	*a;
+
+		if ( ml->sml_desc != lastmod_schema.lms_ad_lastmodEnabled ) {
+			continue;
+		}
+
+		if ( ml->sml_op != LDAP_MOD_REPLACE ) {
+			rs->sr_text = "unsupported mod type";
+			rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+			goto cleanup;
+		}
+		
+		a = attr_find( lmi->lmi_e->e_attrs, ml->sml_desc );
+
+		if ( a == NULL ) {
+			rs->sr_text = "lastmod overlay internal error";
+			rs->sr_err = LDAP_OTHER;
+			goto cleanup;
+		}
+
+		ch_free( a->a_vals[ 0 ].bv_val );
+		ber_dupbv( &a->a_vals[ 0 ], &ml->sml_values[ 0 ] );
+		if ( a->a_nvals ) {
+			ch_free( a->a_nvals[ 0 ].bv_val );
+			if ( ml->sml_nvalues && !BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
+				ber_dupbv( &a->a_nvals[ 0 ], &ml->sml_nvalues[ 0 ] );
+			} else {
+				ber_dupbv( &a->a_nvals[ 0 ], &ml->sml_values[ 0 ] );
+			}
+		}
+
+		if ( strcmp( ml->sml_values[ 0 ].bv_val, "TRUE" ) == 0 ) {
+			lmi->lmi_enabled = 1;
+		} else if ( strcmp( ml->sml_values[ 0 ].bv_val, "FALSE" ) == 0 ) {
+			lmi->lmi_enabled = 0;
+		} else {
+			assert( 0 );
+		}
+	}
+
+	rs->sr_err = LDAP_SUCCESS;
+
+cleanup:;
+	ldap_pvt_thread_mutex_unlock( &lmi->lmi_entry_mutex );
+
+	send_ldap_result( op, rs );
+	rs->sr_text = NULL;
+
+	return rs->sr_err;
+}
+
+static int
+lastmod_op_func( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+	Modifications		*ml;
+
+	if ( dn_match( &op->o_req_ndn, &lmi->lmi_e->e_nname ) ) {
+		switch ( op->o_tag ) {
+		case LDAP_REQ_SEARCH:
+			if ( op->ors_scope != LDAP_SCOPE_BASE ) {
+				goto return_referral;
+			}
+			/* process */
+			return lastmod_search( op, rs );
+
+		case LDAP_REQ_COMPARE:
+			return lastmod_compare( op, rs );
+
+		case LDAP_REQ_EXTENDED:
+			/* if write, reject; otherwise process */
+			if ( exop_is_write( op )) {
+				rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+				rs->sr_text = "not allowed within namingContext";
+				goto return_error;
+			}
+			return lastmod_exop( op, rs );
+
+		case LDAP_REQ_MODIFY:
+			/* allow only changes to overlay status */
+			for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
+				if ( ad_cmp( ml->sml_desc, slap_schema.si_ad_modifiersName ) != 0
+						&& ad_cmp( ml->sml_desc, slap_schema.si_ad_modifyTimestamp ) != 0
+						&& ad_cmp( ml->sml_desc, slap_schema.si_ad_entryCSN ) != 0
+						&& ad_cmp( ml->sml_desc, lastmod_schema.lms_ad_lastmodEnabled ) != 0 )
+				{
+					rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+					rs->sr_text = "not allowed within namingContext";
+					goto return_error;
+				}
+			}
+			return lastmod_modify( op, rs );
+
+		default:
+			rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+			rs->sr_text = "not allowed within namingContext";
+			goto return_error;
+		}
+	}
+
+	if ( dnIsSuffix( &op->o_req_ndn, &lmi->lmi_e->e_nname ) ) {
+		goto return_referral;
+	}
+
+	return SLAP_CB_CONTINUE;
+
+return_referral:;
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+	rs->sr_ref = referral_rewrite( default_referral,
+			NULL, &op->o_req_dn, op->ors_scope );
+
+	if ( !rs->sr_ref ) {
+		rs->sr_ref = default_referral;
+	}
+	rs->sr_err = LDAP_REFERRAL;
+	send_ldap_result( op, rs );
+
+	if ( rs->sr_ref != default_referral ) {
+		ber_bvarray_free( rs->sr_ref );
+	}
+	rs->sr_ref = NULL;
+
+	return -1;
+
+return_error:;
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+	send_ldap_result( op, rs );
+	rs->sr_text = NULL;
+
+	return -1;
+}
+
+static int
+best_guess( Operation *op,
+		struct berval *bv_entryCSN, struct berval *bv_nentryCSN,
+		struct berval *bv_modifyTimestamp, struct berval *bv_nmodifyTimestamp,
+		struct berval *bv_modifiersName, struct berval *bv_nmodifiersName )
+{
+	if ( bv_entryCSN ) {
+		char		csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
+		struct berval	entryCSN;
+	
+		entryCSN.bv_val = csnbuf;
+		entryCSN.bv_len = sizeof( csnbuf );
+		slap_get_csn( NULL, &entryCSN, 0 );
+
+		ber_dupbv( bv_entryCSN, &entryCSN );
+		ber_dupbv( bv_nentryCSN, &entryCSN );
+	}
+
+	if ( bv_modifyTimestamp ) {
+		char		tmbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
+		struct berval timestamp;
+		time_t		currtime;
+
+		/* best guess */
+#if 0
+		currtime = slap_get_time();
+#endif
+		/* maybe we better use the time the operation was initiated */
+		currtime = op->o_time;
+
+		timestamp.bv_val = tmbuf;
+		timestamp.bv_len = sizeof(tmbuf);
+		slap_timestamp( &currtime, &timestamp );
+
+		ber_dupbv( bv_modifyTimestamp, &timestamp );
+		ber_dupbv( bv_nmodifyTimestamp, bv_modifyTimestamp );
+	}
+
+	if ( bv_modifiersName ) {
+		/* best guess */
+		ber_dupbv( bv_modifiersName, &op->o_dn );
+		ber_dupbv( bv_nmodifiersName, &op->o_ndn );
+	}
+
+	return 0;
+}
+
+static int
+lastmod_update( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+	Attribute		*a;
+	Modifications		*ml = NULL;
+	struct berval		bv_entryCSN = BER_BVNULL,
+				bv_nentryCSN = BER_BVNULL,
+				bv_modifyTimestamp = BER_BVNULL,
+				bv_nmodifyTimestamp = BER_BVNULL,
+				bv_modifiersName = BER_BVNULL,
+				bv_nmodifiersName = BER_BVNULL,
+				bv_name = BER_BVNULL,
+				bv_nname = BER_BVNULL;
+	enum lastmodType_e	lmt = LASTMOD_UNKNOWN;
+	Entry			*e = NULL;
+	int			rc = -1;
+
+	/* FIXME: timestamp? modifier? */
+	switch ( op->o_tag ) {
+	case LDAP_REQ_ADD:
+		lmt = LASTMOD_ADD;
+		e = op->ora_e;
+		a = attr_find( e->e_attrs, slap_schema.si_ad_entryCSN );
+		if ( a != NULL ) {
+			ber_dupbv( &bv_entryCSN, &a->a_vals[0] );
+			if ( a->a_nvals && !BER_BVISNULL( &a->a_nvals[0] ) ) {
+				ber_dupbv( &bv_nentryCSN, &a->a_nvals[0] );
+			} else {
+				ber_dupbv( &bv_nentryCSN, &a->a_vals[0] );
+			}
+		}
+		a = attr_find( e->e_attrs, slap_schema.si_ad_modifyTimestamp );
+		if ( a != NULL ) {
+			ber_dupbv( &bv_modifyTimestamp, &a->a_vals[0] );
+			if ( a->a_nvals && !BER_BVISNULL( &a->a_nvals[0] ) ) {
+				ber_dupbv( &bv_nmodifyTimestamp, &a->a_nvals[0] );
+			} else {
+				ber_dupbv( &bv_nmodifyTimestamp, &a->a_vals[0] );
+			}
+		}
+		a = attr_find( e->e_attrs, slap_schema.si_ad_modifiersName );
+		if ( a != NULL ) {
+			ber_dupbv( &bv_modifiersName, &a->a_vals[0] );
+			ber_dupbv( &bv_nmodifiersName, &a->a_nvals[0] );
+		}
+		ber_dupbv( &bv_name, &e->e_name );
+		ber_dupbv( &bv_nname, &e->e_nname );
+		break;
+
+	case LDAP_REQ_DELETE:
+		lmt = LASTMOD_DELETE;
+
+		best_guess( op, &bv_entryCSN, &bv_nentryCSN,
+				&bv_modifyTimestamp, &bv_nmodifyTimestamp,
+				&bv_modifiersName, &bv_nmodifiersName );
+
+		ber_dupbv( &bv_name, &op->o_req_dn );
+		ber_dupbv( &bv_nname, &op->o_req_ndn );
+		break;
+
+	case LDAP_REQ_EXTENDED:
+		lmt = LASTMOD_EXOP;
+
+		/* actually, password change is wrapped around a backend 
+		 * call to modify, so it never shows up as an exop... */
+		best_guess( op, &bv_entryCSN, &bv_nentryCSN,
+				&bv_modifyTimestamp, &bv_nmodifyTimestamp,
+				&bv_modifiersName, &bv_nmodifiersName );
+
+		ber_dupbv( &bv_name, &op->o_req_dn );
+		ber_dupbv( &bv_nname, &op->o_req_ndn );
+		break;
+
+	case LDAP_REQ_MODIFY:
+		lmt = LASTMOD_MODIFY;
+		rc = 3;
+
+		for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
+			if ( ad_cmp( ml->sml_desc , slap_schema.si_ad_modifiersName ) == 0 ) {
+				ber_dupbv( &bv_modifiersName, &ml->sml_values[0] );
+				ber_dupbv( &bv_nmodifiersName, &ml->sml_nvalues[0] );
+
+				rc--;
+				if ( !rc ) {
+					break;
+				}
+
+			} else if ( ad_cmp( ml->sml_desc, slap_schema.si_ad_entryCSN ) == 0 ) {
+				ber_dupbv( &bv_entryCSN, &ml->sml_values[0] );
+				if ( ml->sml_nvalues && !BER_BVISNULL( &ml->sml_nvalues[0] ) ) {
+					ber_dupbv( &bv_nentryCSN, &ml->sml_nvalues[0] );
+				} else {
+					ber_dupbv( &bv_nentryCSN, &ml->sml_values[0] );
+				}
+
+				rc --;
+				if ( !rc ) {
+					break;
+				}
+
+			} else if ( ad_cmp( ml->sml_desc, slap_schema.si_ad_modifyTimestamp ) == 0 ) {
+				ber_dupbv( &bv_modifyTimestamp, &ml->sml_values[0] );
+				if ( ml->sml_nvalues && !BER_BVISNULL( &ml->sml_nvalues[0] ) ) {
+					ber_dupbv( &bv_nmodifyTimestamp, &ml->sml_nvalues[0] );
+				} else {
+					ber_dupbv( &bv_nmodifyTimestamp, &ml->sml_values[0] );
+				}
+
+				rc --;
+				if ( !rc ) {
+					break;
+				}
+			}
+		}
+
+		/* if rooted at global overlay, opattrs are not yet in place */
+		if ( BER_BVISNULL( &bv_modifiersName ) ) {
+			best_guess( op, NULL, NULL, NULL, NULL, &bv_modifiersName, &bv_nmodifiersName );
+		}
+
+		if ( BER_BVISNULL( &bv_entryCSN ) ) {
+			best_guess( op, &bv_entryCSN, &bv_nentryCSN, NULL, NULL, NULL, NULL );
+		}
+
+		if ( BER_BVISNULL( &bv_modifyTimestamp ) ) {
+			best_guess( op, NULL, NULL, &bv_modifyTimestamp, &bv_nmodifyTimestamp, NULL, NULL );
+		}
+
+		ber_dupbv( &bv_name, &op->o_req_dn );
+		ber_dupbv( &bv_nname, &op->o_req_ndn );
+		break;
+
+	case LDAP_REQ_MODRDN:
+		lmt = LASTMOD_MODRDN;
+		e = NULL;
+
+		if ( op->orr_newSup && !BER_BVISNULL( op->orr_newSup ) ) {
+			build_new_dn( &bv_name, op->orr_newSup, &op->orr_newrdn, NULL );
+			build_new_dn( &bv_nname, op->orr_nnewSup, &op->orr_nnewrdn, NULL );
+
+		} else {
+			struct berval	pdn;
+
+			dnParent( &op->o_req_dn, &pdn );
+			build_new_dn( &bv_name, &pdn, &op->orr_newrdn, NULL );
+
+			dnParent( &op->o_req_ndn, &pdn );
+			build_new_dn( &bv_nname, &pdn, &op->orr_nnewrdn, NULL );
+		}
+
+		if ( on->on_info->oi_orig->bi_entry_get_rw ) {
+			BackendInfo	*bi = op->o_bd->bd_info;
+			int		rc;
+
+			op->o_bd->bd_info = (BackendInfo *)on->on_info->oi_orig;
+			rc = op->o_bd->bd_info->bi_entry_get_rw( op, &bv_name, NULL, NULL, 0, &e );
+			if ( rc == LDAP_SUCCESS ) {
+				a = attr_find( e->e_attrs, slap_schema.si_ad_modifiersName );
+				if ( a != NULL ) {
+					ber_dupbv( &bv_modifiersName, &a->a_vals[0] );
+					ber_dupbv( &bv_nmodifiersName, &a->a_nvals[0] );
+				}
+				a = attr_find( e->e_attrs, slap_schema.si_ad_entryCSN );
+				if ( a != NULL ) {
+					ber_dupbv( &bv_entryCSN, &a->a_vals[0] );
+					if ( a->a_nvals && !BER_BVISNULL( &a->a_nvals[0] ) ) {
+						ber_dupbv( &bv_nentryCSN, &a->a_nvals[0] );
+					} else {
+						ber_dupbv( &bv_nentryCSN, &a->a_vals[0] );
+					}
+				}
+				a = attr_find( e->e_attrs, slap_schema.si_ad_modifyTimestamp );
+				if ( a != NULL ) {
+					ber_dupbv( &bv_modifyTimestamp, &a->a_vals[0] );
+					if ( a->a_nvals && !BER_BVISNULL( &a->a_nvals[0] ) ) {
+						ber_dupbv( &bv_nmodifyTimestamp, &a->a_nvals[0] );
+					} else {
+						ber_dupbv( &bv_nmodifyTimestamp, &a->a_vals[0] );
+					}
+				}
+
+				assert( dn_match( &bv_name, &e->e_name ) );
+				assert( dn_match( &bv_nname, &e->e_nname ) );
+
+				op->o_bd->bd_info->bi_entry_release_rw( op, e, 0 );
+			}
+
+			op->o_bd->bd_info = bi;
+
+		}
+
+		/* if !bi_entry_get_rw || bi_entry_get_rw failed for any reason... */
+		if ( e == NULL ) {
+			best_guess( op, &bv_entryCSN, &bv_nentryCSN,
+					&bv_modifyTimestamp, &bv_nmodifyTimestamp,
+					&bv_modifiersName, &bv_nmodifiersName );
+		}
+
+		break;
+
+	default:
+		return -1;
+	}
+	
+	ldap_pvt_thread_mutex_lock( &lmi->lmi_entry_mutex );
+
+#if 0
+	fprintf( stderr, "### lastmodDN: %s %s\n", bv_name.bv_val, bv_nname.bv_val );
+#endif
+
+	a = attr_find( lmi->lmi_e->e_attrs, lastmod_schema.lms_ad_lastmodDN );
+	if ( a == NULL ) {
+		goto error_return;
+	}
+	ch_free( a->a_vals[0].bv_val );
+	a->a_vals[0] = bv_name;
+	ch_free( a->a_nvals[0].bv_val );
+	a->a_nvals[0] = bv_nname;
+
+#if 0
+	fprintf( stderr, "### lastmodType: %s %s\n", lastmodType[ lmt ].bv_val, lastmodType[ lmt ].bv_val );
+#endif
+
+	a = attr_find( lmi->lmi_e->e_attrs, lastmod_schema.lms_ad_lastmodType );
+	if ( a == NULL ) {
+		goto error_return;
+	} 
+	ch_free( a->a_vals[0].bv_val );
+	ber_dupbv( &a->a_vals[0], &lastmodType[ lmt ] );
+	ch_free( a->a_nvals[0].bv_val );
+	ber_dupbv( &a->a_nvals[0], &lastmodType[ lmt ] );
+
+#if 0
+	fprintf( stderr, "### modifiersName: %s %s\n", bv_modifiersName.bv_val, bv_nmodifiersName.bv_val );
+#endif
+
+	a = attr_find( lmi->lmi_e->e_attrs, slap_schema.si_ad_modifiersName );
+	if ( a == NULL ) {
+		goto error_return;
+	} 
+	ch_free( a->a_vals[0].bv_val );
+	a->a_vals[0] = bv_modifiersName;
+	ch_free( a->a_nvals[0].bv_val );
+	a->a_nvals[0] = bv_nmodifiersName;
+
+#if 0
+	fprintf( stderr, "### modifyTimestamp: %s %s\n", bv_nmodifyTimestamp.bv_val, bv_modifyTimestamp.bv_val );
+#endif
+
+	a = attr_find( lmi->lmi_e->e_attrs, slap_schema.si_ad_modifyTimestamp );
+	if ( a == NULL ) {
+		goto error_return;
+	} 
+	ch_free( a->a_vals[0].bv_val );
+	a->a_vals[0] = bv_modifyTimestamp;
+	ch_free( a->a_nvals[0].bv_val );
+	a->a_nvals[0] = bv_nmodifyTimestamp;
+
+#if 0
+	fprintf( stderr, "### entryCSN: %s %s\n", bv_nentryCSN.bv_val, bv_entryCSN.bv_val );
+#endif
+
+	a = attr_find( lmi->lmi_e->e_attrs, slap_schema.si_ad_entryCSN );
+	if ( a == NULL ) {
+		goto error_return;
+	} 
+	ch_free( a->a_vals[0].bv_val );
+	a->a_vals[0] = bv_entryCSN;
+	ch_free( a->a_nvals[0].bv_val );
+	a->a_nvals[0] = bv_nentryCSN;
+
+	rc = 0;
+
+error_return:;
+	ldap_pvt_thread_mutex_unlock( &lmi->lmi_entry_mutex );
+	
+	return rc;
+}
+
+static int
+lastmod_response( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+
+	/* don't record failed operations */
+	switch ( rs->sr_err ) {
+	case LDAP_SUCCESS:
+		/* FIXME: other cases? */
+		break;
+
+	default:
+		return SLAP_CB_CONTINUE;
+	}
+
+	/* record only write operations */
+	switch ( op->o_tag ) {
+	case LDAP_REQ_ADD:
+	case LDAP_REQ_MODIFY:
+	case LDAP_REQ_MODRDN:
+	case LDAP_REQ_DELETE:
+		break;
+
+	case LDAP_REQ_EXTENDED:
+		/* if write, process */
+		if ( exop_is_write( op ))
+			break;
+
+		/* fall thru */
+	default:
+		return SLAP_CB_CONTINUE;
+	}
+
+	/* skip if disabled */
+	ldap_pvt_thread_mutex_lock( &lmi->lmi_entry_mutex );
+	if ( !lmi->lmi_enabled ) {
+		ldap_pvt_thread_mutex_unlock( &lmi->lmi_entry_mutex );
+		return SLAP_CB_CONTINUE;
+	}
+	ldap_pvt_thread_mutex_unlock( &lmi->lmi_entry_mutex );
+
+	(void)lastmod_update( op, rs );
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+lastmod_db_init( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst		*on = (slap_overinst *)be->bd_info;
+	lastmod_info_t		*lmi;
+
+	if ( lastmod_schema.lms_oc_lastmod == NULL ) {
+		int		i;
+		const char 	*text;
+
+		/* schema integration */
+		for ( i = 0; mat[i].schema; i++ ) {
+			int			code;
+			AttributeDescription	**ad =
+				((AttributeDescription **)&(((char *)&lastmod_schema)[mat[i].offset]));
+			ad[0] = NULL;
+
+			code = register_at( mat[i].schema, ad, 0 );
+			if ( code ) {
+				Debug( LDAP_DEBUG_ANY,
+					"lastmod_init: register_at failed\n" );
+				return -1;
+			}
+			(*ad)->ad_type->sat_flags |= mat[i].flags;
+		}
+
+		for ( i = 0; moc[i].schema; i++ ) {
+			int			code;
+			ObjectClass		**Oc =
+				((ObjectClass **)&(((char *)&lastmod_schema)[moc[i].offset]));
+	
+			code = register_oc( moc[i].schema, Oc, 0 );
+			if ( code ) {
+				Debug( LDAP_DEBUG_ANY,
+					"lastmod_init: register_oc failed\n" );
+				return -1;
+			}
+			(*Oc)->soc_flags |= moc[i].flags;
+		}
+	}
+
+	lmi = (lastmod_info_t *)ch_malloc( sizeof( lastmod_info_t ) );
+
+	memset( lmi, 0, sizeof( lastmod_info_t ) );
+	lmi->lmi_enabled = 1;
+	
+	on->on_bi.bi_private = lmi;
+
+	return 0;
+}
+
+static int
+lastmod_db_config(
+	BackendDB	*be,
+	const char	*fname,
+	int		lineno,
+	int		argc,
+	char	**argv
+)
+{
+	slap_overinst		*on = (slap_overinst *)be->bd_info;
+	lastmod_info_t		*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+
+	if ( strcasecmp( argv[ 0 ], "lastmod-rdnvalue" ) == 0 ) {
+		if ( lmi->lmi_rdnvalue.bv_val ) {
+			/* already defined! */
+			ch_free( lmi->lmi_rdnvalue.bv_val );
+		}
+
+		ber_str2bv( argv[ 1 ], 0, 1, &lmi->lmi_rdnvalue );
+
+	} else if ( strcasecmp( argv[ 0 ], "lastmod-enabled" ) == 0 ) {
+		if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
+			lmi->lmi_enabled = 1;
+
+		} else if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
+			lmi->lmi_enabled = 0;
+
+		} else {
+			return -1;
+		}
+
+	} else {
+		return SLAP_CONF_UNKNOWN;
+	}
+
+	return 0;
+}
+
+static int
+lastmod_db_open( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst	*on = (slap_overinst *) be->bd_info;
+	lastmod_info_t	*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+	char		buf[ 8192 ];
+	static char		tmbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
+
+	char			csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
+	struct berval		entryCSN;
+	struct berval timestamp;
+
+	if ( !SLAP_LASTMOD( be ) ) {
+		fprintf( stderr, "set \"lastmod on\" to make this overlay effective\n" );
+		return -1;
+	}
+
+	/*
+	 * Start
+	 */
+	timestamp.bv_val = tmbuf;
+	timestamp.bv_len = sizeof(tmbuf);
+	slap_timestamp( &starttime, &timestamp );
+
+	entryCSN.bv_val = csnbuf;
+	entryCSN.bv_len = sizeof( csnbuf );
+	slap_get_csn( NULL, &entryCSN, 0 );
+
+	if ( BER_BVISNULL( &lmi->lmi_rdnvalue ) ) {
+		ber_str2bv( "Lastmod", 0, 1, &lmi->lmi_rdnvalue );
+	}
+
+	snprintf( buf, sizeof( buf ),
+			"dn: cn=%s%s%s\n"
+			"objectClass: %s\n"
+			"structuralObjectClass: %s\n"
+			"cn: %s\n"
+			"description: This object contains the last modification to this database\n"
+			"%s: cn=%s%s%s\n"
+			"%s: %s\n"
+			"%s: %s\n"
+			"createTimestamp: %s\n"
+			"creatorsName: %s\n"
+			"entryCSN: %s\n"
+			"modifyTimestamp: %s\n"
+			"modifiersName: %s\n"
+			"hasSubordinates: FALSE\n",
+			lmi->lmi_rdnvalue.bv_val, BER_BVISEMPTY( &be->be_suffix[ 0 ] ) ? "" : ",", be->be_suffix[ 0 ].bv_val,
+			lastmod_schema.lms_oc_lastmod->soc_cname.bv_val,
+			lastmod_schema.lms_oc_lastmod->soc_cname.bv_val,
+			lmi->lmi_rdnvalue.bv_val,
+			lastmod_schema.lms_ad_lastmodDN->ad_cname.bv_val,
+				lmi->lmi_rdnvalue.bv_val, BER_BVISEMPTY( &be->be_suffix[ 0 ] ) ? "" : ",", be->be_suffix[ 0 ].bv_val,
+			lastmod_schema.lms_ad_lastmodType->ad_cname.bv_val, lastmodType[ LASTMOD_ADD ].bv_val,
+			lastmod_schema.lms_ad_lastmodEnabled->ad_cname.bv_val, lmi->lmi_enabled ? "TRUE" : "FALSE",
+			tmbuf,
+			BER_BVISNULL( &be->be_rootdn ) ? SLAPD_ANONYMOUS : be->be_rootdn.bv_val,
+			entryCSN.bv_val,
+			tmbuf,
+			BER_BVISNULL( &be->be_rootdn ) ? SLAPD_ANONYMOUS : be->be_rootdn.bv_val );
+
+#if 0
+	fprintf( stderr, "# entry:\n%s\n", buf );
+#endif
+
+	lmi->lmi_e = str2entry( buf );
+	if ( lmi->lmi_e == NULL ) {
+		return -1;
+	}
+
+	ldap_pvt_thread_mutex_init( &lmi->lmi_entry_mutex );
+
+	return 0;
+}
+
+static int
+lastmod_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	lastmod_info_t	*lmi = (lastmod_info_t *)on->on_bi.bi_private;
+
+	if ( lmi ) {
+		if ( !BER_BVISNULL( &lmi->lmi_rdnvalue ) ) {
+			ch_free( lmi->lmi_rdnvalue.bv_val );
+		}
+
+		if ( lmi->lmi_e ) {
+			entry_free( lmi->lmi_e );
+
+			ldap_pvt_thread_mutex_destroy( &lmi->lmi_entry_mutex );
+		}
+
+		ch_free( lmi );
+	}
+
+	return 0;
+}
+
+/* This overlay is set up for dynamic loading via moduleload. For static
+ * configuration, you'll need to arrange for the slap_overinst to be
+ * initialized and registered by some other function inside slapd.
+ */
+
+static slap_overinst 		lastmod;
+
+int
+lastmod_initialize()
+{
+	lastmod.on_bi.bi_type = "lastmod";
+	lastmod.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	lastmod.on_bi.bi_db_init = lastmod_db_init;
+	lastmod.on_bi.bi_db_config = lastmod_db_config;
+	lastmod.on_bi.bi_db_destroy = lastmod_db_destroy;
+	lastmod.on_bi.bi_db_open = lastmod_db_open;
+
+	lastmod.on_bi.bi_op_add = lastmod_op_func;
+	lastmod.on_bi.bi_op_compare = lastmod_op_func;
+	lastmod.on_bi.bi_op_delete = lastmod_op_func;
+	lastmod.on_bi.bi_op_modify = lastmod_op_func;
+	lastmod.on_bi.bi_op_modrdn = lastmod_op_func;
+	lastmod.on_bi.bi_op_search = lastmod_op_func;
+	lastmod.on_bi.bi_extended = lastmod_op_func;
+
+	lastmod.on_response = lastmod_response;
+
+	return overlay_register( &lastmod );
+}
+
+#if SLAPD_OVER_LASTMOD == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return lastmod_initialize();
+}
+#endif /* SLAPD_OVER_LASTMOD == SLAPD_MOD_DYNAMIC */
+
+#endif /* defined(SLAPD_OVER_LASTMOD) */
diff --git a/contrib/slapd-modules/lastmod/slapo-lastmod.5 b/contrib/slapd-modules/lastmod/slapo-lastmod.5
new file mode 100644
index 0000000..ea0ca23
--- /dev/null
+++ b/contrib/slapd-modules/lastmod/slapo-lastmod.5
@@ -0,0 +1,185 @@
+.\" Copyright 2004-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.TH SLAPO_LASTMOD 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.SH NAME
+slapo-lastmod \- Last Modification overlay
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+.LP
+The 
+.B lastmod
+overlay creates a service entry rooted at the suffix of the database
+it's stacked onto, which holds the DN, the modification type,
+the modifiersName and the modifyTimestamp of the last write operation
+performed on that database.
+The lastmod overlay cannot be used when the "lastmod" feature
+is disabled, i.e. "lastmod off" is used.
+.P
+All operations targeted at the DN of the lastmod entry are rejected,
+except reads, i.e. searches with 
+.B base
+scope.
+Regular operations are ignored, unless they result in writing; then,
+in case of success, the lastmod entry is updated accordingly,
+if possible.
+
+.SH CONFIGURATION
+These 
+.B slapd.conf
+configuration options apply to the lastmod overlay. They must appear
+after the
+.B overlay
+directive.
+.TP
+.B lastmod-rdnvalue <RDN value>
+Specify the value of the RDN used for the service entry.  By default
+.I Lastmod
+is used.
+.TP
+.B lastmod-enabled {yes|no}
+Specify whether the overlay must be enabled or not at startup.
+By default, the overlay is enabled; however, by changing the boolean
+value of the attribute
+.IR lastmodEnabled ,
+one can affect the status of the overlay.
+This is useful, for instance, to inhibit the overlay from keeping track
+of large bulk loads or deletions.
+
+.SH OBJECT CLASS
+The 
+.B lastmod
+overlay depends on the
+.B lastmod
+objectClass.  The definition of that class is as follows:
+.LP
+.RS 4
+( 1.3.6.1.4.1.4203.666.3.13 "
+    NAME 'lastmod'
+    DESC 'OpenLDAP per-database last modification monitoring'
+    STRUCTURAL
+    SUP top
+    MUST ( cn $ lastmodDN $ lastmodType )
+    MAY ( description $ seeAlso ) )
+.RE
+
+.SH ATTRIBUTES
+.P
+Each one of the sections below details the meaning and use of a particular
+attribute of this
+.B lastmod
+objectClass.
+Most of the attributes that are specific to the lastmod objectClass are
+operational, since they can logically be altered only by the DSA.
+The most notable exception is the
+.I lastmodEnabled
+attributeType, which can be altered via protocol to change the status
+of the overlay.
+.P
+
+.B lastmodEnabled
+.P
+This attribute contains a boolean flag that determines the status
+of the overlay.  It can be altered via protocol by issuing a modify
+operation that replaces the value of the attribute.
+.LP
+.RS 4
+(  1.3.6.1.4.1.4203.666.1.30
+   NAME 'lastmodEnabled'
+   DESC 'Lastmod overlay state'
+   SYNTAX 1.3.6.1.4.1.1466.115.121.1.7
+   EQUALITY booleanMatch
+   SINGLE-VALUE )
+.RE
+
+.SH OPERATIONAL ATTRIBUTES
+.P
+Each one of the sections below details the meaning and use of a particular
+attribute of this
+.B lastmod
+objectClass.
+Most of the attributes that are specific to the lastmod objectClass are
+operational, since they can logically be altered only by the DSA.
+.P
+
+.B lastmodDN
+.P
+This attribute contains the distinguished name of the entry
+that was last modified within the naming context of a database.
+.LP
+.RS 4
+(  1.3.6.1.4.1.4203.666.1.28
+   NAME 'lastmodDN'
+   DESC 'DN of last modification'
+   EQUALITY distinguishedNameMatch
+   SYNTAX 1.3.6.1.4.1.1466.115.121.1.12
+   NO-USER-MODIFICATION
+   USAGE directoryOperation )
+.RE
+
+.B lastmodType
+.P
+This attribute contains the type of the modification that occurred
+to the last modified entry.  Legal values are
+.BR add ,
+.BR delete ,
+.BR exop ,
+.BR modify ,
+.B modrdn
+and
+.BR unknown .
+The latter should only be used as a fall-thru in case of unhandled
+request types that are considered equivalent to a write operation.
+.LP
+.RS 4
+(  1.3.6.1.4.1.4203.666.1.29
+   NAME 'lastmodType'
+   DESC 'Type of last modification'
+   SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
+   EQUALITY caseIgnoreMatch
+   SINGLE-VALUE
+   NO-USER-MODIFICATION
+   USAGE directoryOperation )
+.RE
+
+
+.SH EXAMPLES
+.LP
+.RS
+.nf
+database    mdb
+suffix      dc=example,dc=com
+\...
+overlay     lastmod
+lastmod-rdnvalue "Last Modification"
+.fi
+.RE
+
+.SH SEE ALSO
+.BR ldap (3),
+.BR slapd.conf (5),
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.SH BUGS
+It is unclear whether this overlay can safely interoperate 
+with other overlays.
+If the underlying backend does not implement entry_get/entry_release
+handlers, modrdn update can become tricky.
+The code needs some cleanup and more consistent error handling.
+So far, the OIDs for the schema haven't been assigned yet.
+
+.SH ACKNOWLEDGEMENTS
+.P
+This module was written in 2004 by Pierangelo Masarati in fulfillment
+of requirements from SysNet s.n.c.; this man page has been copied
+from 
+.BR slapo-ppolicy (5),
+and most of the overlays ever written are copied from Howard Chu's
+first overlays.
+.P
+.B OpenLDAP
+is developed and maintained by The OpenLDAP Project (http://www.openldap.org/).
+.B OpenLDAP
+is derived from University of Michigan LDAP 3.3 Release.  
diff --git a/contrib/slapd-modules/noopsrch/Makefile b/contrib/slapd-modules/noopsrch/Makefile
new file mode 100644
index 0000000..2934a32
--- /dev/null
+++ b/contrib/slapd-modules/noopsrch/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2 -Wall
+DEFS = -DSLAPD_OVER_NOOPSRCH=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = noopsrch.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+noopsrch.la: noopsrch.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/noopsrch/noopsrch.c b/contrib/slapd-modules/noopsrch/noopsrch.c
new file mode 100644
index 0000000..24f0f53
--- /dev/null
+++ b/contrib/slapd-modules/noopsrch/noopsrch.c
@@ -0,0 +1,255 @@
+/* noopsrch.c - LDAP Control that counts entries a search would return */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2010-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion
+ * in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+/* define SLAPD_OVER_NOOPSRCH=2 to build as run-time loadable module */
+#ifdef SLAPD_OVER_NOOPSRCH
+
+/*
+ * Control OID
+ */
+#define	LDAP_CONTROL_X_NOOPSRCH		"1.3.6.1.4.1.4203.666.5.18"
+
+#include "slap.h"
+#include "ac/string.h"
+
+#define o_noopsrch			o_ctrlflag[noopsrch_cid]
+#define o_ctrlnoopsrch		o_controls[noopsrch_cid]
+
+static int noopsrch_cid;
+static slap_overinst noopsrch;
+
+static int
+noopsrch_parseCtrl (
+	Operation *op,
+	SlapReply *rs,
+	LDAPControl *ctrl )
+{
+	if ( op->o_noopsrch != SLAP_CONTROL_NONE ) {
+		rs->sr_text = "No-op Search control specified multiple times";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
+		rs->sr_text = "No-op Search control value is present";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	op->o_ctrlnoopsrch = (void *)NULL;
+
+	op->o_noopsrch = ctrl->ldctl_iscritical
+		? SLAP_CONTROL_CRITICAL
+		: SLAP_CONTROL_NONCRITICAL;
+
+	rs->sr_err = LDAP_SUCCESS;
+
+	return rs->sr_err;
+}
+
+int dummy;
+
+typedef struct noopsrch_cb_t {
+	slap_overinst	*nc_on;
+	ber_int_t		nc_nentries;
+	ber_int_t		nc_nsearchref;
+	AttributeName	*nc_save_attrs;
+	int				*nc_pdummy;
+	int				nc_save_slimit;
+} noopsrch_cb_t;
+
+static int
+noopsrch_response( Operation *op, SlapReply *rs )
+{
+	noopsrch_cb_t		*nc = (noopsrch_cb_t *)op->o_callback->sc_private;
+
+	/* if the control is global, limits are not computed yet  */
+	if ( nc->nc_pdummy == &dummy ) {	
+		nc->nc_save_slimit = op->ors_slimit;
+		op->ors_slimit = SLAP_NO_LIMIT;
+		nc->nc_pdummy = NULL;
+	}
+
+	if ( rs->sr_type == REP_SEARCH ) {
+		nc->nc_nentries++;
+#ifdef NOOPSRCH_DEBUG
+		Debug( LDAP_DEBUG_TRACE, "noopsrch_response(REP_SEARCH): nentries=%d\n", nc->nc_nentries );
+#endif
+		return 0;
+
+	} else if ( rs->sr_type == REP_SEARCHREF ) {
+		nc->nc_nsearchref++;
+		return 0;
+
+	} else if ( rs->sr_type == REP_RESULT ) {
+		BerElementBuffer	berbuf;
+		BerElement			*ber = (BerElement *) &berbuf;
+		struct berval		ctrlval;
+		LDAPControl			*ctrl, *ctrlsp[2];
+		int					rc = rs->sr_err;
+
+		if ( nc->nc_save_slimit >= 0 && nc->nc_nentries >= nc->nc_save_slimit ) {
+			rc = LDAP_SIZELIMIT_EXCEEDED;
+		}
+
+#ifdef NOOPSRCH_DEBUG
+		Debug( LDAP_DEBUG_TRACE, "noopsrch_response(REP_RESULT): err=%d nentries=%d nref=%d\n", rc, nc->nc_nentries, nc->nc_nsearchref );
+#endif
+
+		ber_init2( ber, NULL, LBER_USE_DER );
+
+		ber_printf( ber, "{iii}", rc, nc->nc_nentries, nc->nc_nsearchref );
+		if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
+			ber_free_buf( ber );
+			if ( op->o_noopsrch == SLAP_CONTROL_CRITICAL ) {
+				return LDAP_CONSTRAINT_VIOLATION;
+			}
+			return SLAP_CB_CONTINUE;
+		}
+
+		ctrl = op->o_tmpcalloc( 1,
+			sizeof( LDAPControl ) + ctrlval.bv_len + 1,
+			op->o_tmpmemctx );
+		ctrl->ldctl_value.bv_val = (char *)&ctrl[ 1 ];
+		ctrl->ldctl_oid = LDAP_CONTROL_X_NOOPSRCH;
+		ctrl->ldctl_iscritical = 0;
+		ctrl->ldctl_value.bv_len = ctrlval.bv_len;
+		AC_MEMCPY( ctrl->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len );
+		ctrl->ldctl_value.bv_val[ ctrl->ldctl_value.bv_len ] = '\0';
+
+		ber_free_buf( ber );
+
+		ctrlsp[0] = ctrl;
+		ctrlsp[1] = NULL;
+		slap_add_ctrls( op, rs, ctrlsp );
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+noopsrch_cleanup( Operation *op, SlapReply *rs )
+{
+	if ( rs->sr_type == REP_RESULT || rs->sr_err == SLAPD_ABANDON ) {
+		noopsrch_cb_t		*nc = (noopsrch_cb_t *)op->o_callback->sc_private;
+		op->ors_attrs = nc->nc_save_attrs;
+		if ( nc->nc_pdummy == NULL ) {
+			op->ors_slimit = nc->nc_save_slimit;
+		}
+
+		op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
+		op->o_callback = NULL;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+noopsrch_op_search( Operation *op, SlapReply *rs )
+{
+	if ( op->o_noopsrch != SLAP_CONTROL_NONE ) {
+		slap_callback *sc;
+		noopsrch_cb_t *nc;
+
+		sc = op->o_tmpcalloc( 1, sizeof( slap_callback ) + sizeof( noopsrch_cb_t ), op->o_tmpmemctx );
+
+		nc = (noopsrch_cb_t *)&sc[ 1 ];
+		nc->nc_on = (slap_overinst *)op->o_bd->bd_info;
+		nc->nc_nentries = 0;
+		nc->nc_nsearchref = 0;
+		nc->nc_save_attrs = op->ors_attrs;
+		nc->nc_pdummy = &dummy;
+
+		sc->sc_response = noopsrch_response;
+		sc->sc_cleanup = noopsrch_cleanup;
+		sc->sc_private = (void *)nc;
+
+		op->ors_attrs = slap_anlist_no_attrs;
+
+		sc->sc_next = op->o_callback->sc_next;
+                op->o_callback->sc_next = sc;
+	}
+	
+	return SLAP_CB_CONTINUE;
+}
+
+static int noopsrch_cnt;
+
+static int
+noopsrch_db_init( BackendDB *be, ConfigReply *cr)
+{
+	if ( noopsrch_cnt++ == 0 ) {
+		int rc;
+
+		rc = register_supported_control( LDAP_CONTROL_X_NOOPSRCH,
+			SLAP_CTRL_SEARCH | SLAP_CTRL_GLOBAL_SEARCH, NULL,
+			noopsrch_parseCtrl, &noopsrch_cid );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY,
+				"noopsrch_initialize: Failed to register control '%s' (%d)\n",
+				LDAP_CONTROL_X_NOOPSRCH, rc );
+			return rc;
+		}
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+noopsrch_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	assert( noopsrch_cnt > 0 );
+
+#ifdef SLAP_CONFIG_DELETE
+	overlay_unregister_control( be, LDAP_CONTROL_X_NOOPSRCH );
+	if ( --noopsrch_cnt == 0 ) {
+		unregister_supported_control( LDAP_CONTROL_X_NOOPSRCH );
+	}
+
+#endif /* SLAP_CONFIG_DELETE */
+
+	return 0;
+}
+
+#if SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC
+static
+#endif /* SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC */
+int
+noopsrch_initialize( void )
+{
+
+	noopsrch.on_bi.bi_type = "noopsrch";
+
+	noopsrch.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	noopsrch.on_bi.bi_db_init = noopsrch_db_init;
+	noopsrch.on_bi.bi_db_destroy = noopsrch_db_destroy;
+	noopsrch.on_bi.bi_op_search = noopsrch_op_search;
+
+	return overlay_register( &noopsrch );
+}
+
+#if SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return noopsrch_initialize();
+}
+#endif /* SLAPD_OVER_NOOPSRCH == SLAPD_MOD_DYNAMIC */
+
+#endif /* SLAPD_OVER_NOOPSRCH */
diff --git a/contrib/slapd-modules/nops/Makefile b/contrib/slapd-modules/nops/Makefile
new file mode 100644
index 0000000..94a5bcd
--- /dev/null
+++ b/contrib/slapd-modules/nops/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_NOPS=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = nops.la
+MANPAGES = slapo-nops.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+nops.la: nops.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/nops/nops.c b/contrib/slapd-modules/nops/nops.c
new file mode 100644
index 0000000..6dffb6b
--- /dev/null
+++ b/contrib/slapd-modules/nops/nops.c
@@ -0,0 +1,178 @@
+/* nops.c - Overlay to filter idempotent operations */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Copyright 2008 Emmanuel Dreyfus.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was originally developed by the Emmanuel Dreyfus for
+ * inclusion in OpenLDAP Software.
+ */
+#include "portable.h"
+
+#ifdef SLAPD_OVER_NOPS
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "lutil.h"
+#include "slap.h"
+#include "slap-config.h"
+
+static ConfigDriver nops_cf_gen;
+
+static int nops_cf_gen( ConfigArgs *c ) { return 0; }
+
+static void
+nops_rm_mod( Modifications **mods, Modifications *mod ) {
+	Modifications *next, *m;
+
+	next = mod->sml_next;
+	if (*mods == mod) {
+		*mods = next;
+	} else {
+		Modifications *m;
+
+		for (m = *mods; m; m = m->sml_next) {
+			if (m->sml_next == mod) {
+				m->sml_next = next;
+				break;
+			}
+		}
+	}
+
+	mod->sml_next = NULL;
+	slap_mods_free(mod, 1);
+
+	return;
+}
+
+static int
+nops_modify( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
+	Backend *be = op->o_bd;
+	Entry *target_entry = NULL;
+	Modifications *m;
+	int rc;
+	
+	if ((m = op->orm_modlist) == NULL) {
+		op->o_bd->bd_info = (BackendInfo *)(on->on_info);
+		send_ldap_error(op, rs, LDAP_INVALID_SYNTAX,
+				"nops() got null orm_modlist");
+		return(rs->sr_err);
+	}
+
+	op->o_bd = on->on_info->oi_origdb;
+	rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0,  &target_entry);
+	op->o_bd = be;
+
+	if (rc != 0 || target_entry == NULL)
+		return 0;
+        
+	/* 
+	 * For each attribute modification, check if the 
+	 * modification and the old entry are the same.
+	 */
+	while (m) {
+		int i, j;
+		int found;
+		Attribute *a;
+		BerVarray bm;
+		BerVarray bt;
+		Modifications *mc;
+
+		mc = m;
+		m = m->sml_next;
+
+		/* Check only replace sub-operations */
+		if ((mc->sml_op & LDAP_MOD_OP) != LDAP_MOD_REPLACE)
+			continue;
+
+		/* If there is no values, skip */
+		if (((bm = mc->sml_values ) == NULL ) || (bm[0].bv_val == NULL))
+			continue;
+
+		/* If the attribute does not exist in old entry, skip */
+		if ((a = attr_find(target_entry->e_attrs, mc->sml_desc)) == NULL)
+			continue;
+		if ((bt = a->a_vals) == NULL)
+			continue;
+
+		/* For each value replaced, do we find it in old entry? */
+		found = 0;
+		for (i = 0; bm[i].bv_val; i++) {
+			for (j = 0; bt[j].bv_val; j++) {
+				if (bm[i].bv_len != bt[j].bv_len)
+					continue;
+				if (memcmp(bm[i].bv_val, bt[j].bv_val, bt[j].bv_len) != 0)
+					continue;
+
+				found++;
+				break;
+			}
+		}
+
+		/* Did we find as many values as we had in old entry? */
+		if (i != a->a_numvals || found != a->a_numvals)
+			continue;
+
+		/* This is a nop, remove it */
+		Debug(LDAP_DEBUG_TRACE, "removing nop on %s",
+			a->a_desc->ad_cname.bv_val );
+
+		nops_rm_mod(&op->orm_modlist, mc);
+	}
+	if (target_entry) {
+		op->o_bd = on->on_info->oi_origdb;
+		be_entry_release_r(op, target_entry);
+		op->o_bd = be;
+	}
+
+	if ((m = op->orm_modlist) == NULL) {
+		slap_callback *cb = op->o_callback;
+
+		op->o_bd->bd_info = (BackendInfo *)(on->on_info);
+		op->o_callback = NULL;
+                send_ldap_error(op, rs, LDAP_SUCCESS, "");
+		op->o_callback = cb;
+
+		return (rs->sr_err);
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static slap_overinst nops_ovl;
+
+#if SLAPD_OVER_NOPS == SLAPD_MOD_DYNAMIC
+static
+#endif
+int
+nops_initialize( void ) {
+	nops_ovl.on_bi.bi_type = "nops";
+	nops_ovl.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	nops_ovl.on_bi.bi_op_modify = nops_modify;
+	return overlay_register( &nops_ovl );
+}
+
+#if SLAPD_OVER_NOPS == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	return nops_initialize();
+}
+#endif
+
+#endif /* defined(SLAPD_OVER_NOPS) */
+
diff --git a/contrib/slapd-modules/nops/slapo-nops.5 b/contrib/slapd-modules/nops/slapo-nops.5
new file mode 100644
index 0000000..c27915e
--- /dev/null
+++ b/contrib/slapd-modules/nops/slapo-nops.5
@@ -0,0 +1,32 @@
+.TH SLAPO-NOPS 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2008 Emmanuel Dreyfus
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapo-nops \- Remove Null Operations Overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+Some broken client tend to implement modifications as replace operations
+where all attributes are replaced, most of the time by the same values
+they had before. This can cause undesirable load on logs, ACL evaluation, 
+or replication traffic.
+
+This overlay detects idempotent replace operations and filter them out.
+.SH CONFIGURATION
+This overlay had no specific configuration.
+.SH EXAMPLES
+.LP
+.RS
+.nf
+overlay nops
+.RE
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5).
+.SH ACKNOWLEDGEMENTS
+This module was written in 2008 by Emmanuel Dreyfus.
+.so ../Project
diff --git a/contrib/slapd-modules/nssov/Makefile b/contrib/slapd-modules/nssov/Makefile
new file mode 100644
index 0000000..13987c2
--- /dev/null
+++ b/contrib/slapd-modules/nssov/Makefile
@@ -0,0 +1,86 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 2008-2022 The OpenLDAP Foundation.
+# Portions Copyright 2008 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+# Path to the OpenLDAP source tree
+LDAP_SRC=../../..
+
+# Path to the OpenLDAP object tree - same as above unless
+# you're doing out-of-tree builds.
+LDAP_BUILD=$(LDAP_SRC)
+
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+NLDAPD_INC=-Inss-pam-ldapd
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+OPT = -g -O2
+CC = gcc
+DEFS =
+INCS = $(LDAP_INC) $(NLDAPD_INC)
+LIBS = $(LDAP_LIB)
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+sysconfdir = $(prefix)/etc$(ldap_subdir)
+schemadir = $(sysconfdir)/schema
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+all:	nssov.la
+
+XOBJS = tio.lo
+
+OBJS = alias.lo ether.lo group.lo host.lo netgroup.lo network.lo \
+	nssov.lo passwd.lo protocol.lo rpc.lo service.lo shadow.lo pam.lo
+
+MANPAGES = slapo-nssov.5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+tio.lo:	nss-pam-ldapd/tio.c
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $?
+
+$(OBJS):	nssov.h
+
+nssov.la:	$(OBJS) $(XOBJS)
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info 0:0:0 \
+	-rpath $(moduledir) -module -o $@ $(OBJS) $(XOBJS) $(LIBS)
+
+install: install-lib install-man FORCE
+
+install-lib: nssov.la
+	mkdir -p $(DESTDIR)$(moduledir)
+	$(LIBTOOL) --mode=install cp nssov.la $(DESTDIR)$(moduledir)
+	cp ldapns.schema $(DESTDIR)$(schemadir)
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
+clean:
+	rm -f *.*o *.la .libs/*
+	rm -rf .libs
diff --git a/contrib/slapd-modules/nssov/README b/contrib/slapd-modules/nssov/README
new file mode 100644
index 0000000..af8631e
--- /dev/null
+++ b/contrib/slapd-modules/nssov/README
@@ -0,0 +1,134 @@
+This directory contains a slapd overlay, nssov, that handles
+NSS lookup requests through a local Unix Domain socket. It uses the
+same IPC protocol as Arthur de Jong's nss-ldapd, and a complete
+copy of the nss-ldapd source is included here. It also handles
+PAM requests.
+
+To use this code, you will need the client-side stuf library from
+nss-pam-ldapd.  You can get it from:
+http://arthurdejong.org/nss-pam-ldapd
+You will not need the nslcd daemon; this overlay replaces that part.
+To disable building of the nslcd daemon in nss-pam-ldapd, add the
+--disable-nslcd option to the nss-pam-ldapd configure script. You
+should already be familiar with the RFC2307 and RFC2307bis schema
+to use this overlay.  See the nss-pam-ldapd README for more information
+on the schema and which features are supported.
+
+To use the overlay, add:
+
+	include <path to>nis.schema
+
+	moduleload <path to>nssov.so
+	...
+
+	database mdb
+	...
+	overlay nssov
+
+to your slapd configuration file. (The nis.schema file contains
+the original RFC2307 schema. Some modifications will be needed to
+use RFC2307bis.)
+
+The overlay may be configured with Service Search Descriptors (SSDs)
+for each NSS service that will be used. SSDs are configured using
+
+	nssov-ssd <service> <url>
+
+where the <service> may be one of
+	aliases
+	ethers
+	group
+	hosts
+	netgroup
+	networks
+	passwd
+	protocols
+	rpc
+	services
+	shadow
+
+and the <url> must be of the form
+	ldap:///[<basedn>][??[<scope>][?<filter>]]
+
+The <basedn> will default to the first suffix of the current database.
+The <scope> defaults to "subtree". The default <filter> depends on which
+service is being used.
+
+If the local database is actually a proxy to a foreign LDAP server, some
+mapping of schema may be needed. Some simple attribute substitutions may
+be performed using
+
+	nssov-map <service> <orig> <new>
+
+See the nss-ldapd/README for the original attribute names used in this code.
+
+The overlay also supports dynamic configuration in cn=config. The layout
+of the config entry is
+
+	dn: olcOverlay={0}nssov,olcDatabase={1}mdb,cn=config
+	objectClass: olcOverlayConfig
+	objectClass: olcNssOvConfig
+	olcOverlay: {0}nssov
+	olcNssSsd: passwd ldap:///ou=users,dc=example,dc=com??one
+	olcNssMap: passwd uid accountName
+
+which enables the passwd service, and uses the accountName attribute to
+fetch what is usually retrieved from the uid attribute.
+
+PAM authentication, account management, session management, and password
+management are supported.
+
+Authentication is performed using Simple Binds. Since all operations occur
+inside the slapd overlay, "fake" connections are used and they are
+inherently secure. Two methods of mapping the PAM username to an LDAP DN
+are provided:
+  the mapping can be accomplished using slapd's authz-regexp facility. In
+this case, a DN of the form
+	cn=<service>+uid=<user>,cn=<hostname>,cn=pam,cn=auth
+is fed into the regexp matcher. If a match is produced, the resulting DN
+is used.
+  otherwise, the NSS passwd map is invoked (which means it must already
+be configured).
+
+If no DN is found, the overlay returns PAM_USER_UNKNOWN. If the DN is
+found, and Password Policy is supported, then the Bind will use the
+Password Policy control and return expiration information to PAM.
+
+Account management also uses two methods. These methods depend on the
+ldapns.schema included with the nssov source.
+  The first is identical to the method used in PADL's pam_ldap module:
+host and authorizedService attributes may be looked up in the user's entry,
+and checked to determine access. Also a check may be performed to see if
+the user is a member of a particular group. This method is pretty
+inflexible and doesn't scale well to large networks of users, hosts,
+and services.
+  The second uses slapd's ACL engine to check if the user has "compare"
+privilege on an ipHost object whose name matches the current hostname, and
+whose authorizedService attribute matches the current service name. This
+method is preferred, since it allows authorization to be centralized in
+the ipHost entries instead of scattered across the entire user population.
+The ipHost entries must have an authorizedService attribute (e.g. by way
+of the authorizedServiceObject auxiliary class) to use this method.
+
+Session management: the overlay may optionally add a "logged in" attribute
+to a user's entry for successful logins, and delete the corresponding
+value upon logout. The attribute value is of the form
+	<generalizedTime> <host> <service> <tty> (<ruser@rhost>)
+
+Password management: the overlay will perform a PasswordModify exop
+in the server for the given user.
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 1998-2022 The OpenLDAP Foundation.
+Portions Copyright 2008-2009 Howard Chu, Symas Corp. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/nssov/alias.c b/contrib/slapd-modules/nssov/alias.c
new file mode 100644
index 0000000..ae131db
--- /dev/null
+++ b/contrib/slapd-modules/nssov/alias.c
@@ -0,0 +1,116 @@
+/* alias.c - mail alias lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* Vendor-specific attributes and object classes.
+ * (Mainly from Sun.)
+ * ( 1.3.6.1.4.1.42.2.27.1.2.5 NAME 'nisMailAlias' SUP top STRUCTURAL
+ *   DESC 'NIS mail alias'
+ *   MUST cn
+ *   MAY rfc822MailMember )
+ */
+
+/* the basic search filter for searches */
+static struct berval alias_filter = BER_BVC("(objectClass=nisMailAlias)");
+
+/* the attributes to request with searches */
+static struct berval alias_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("rfc822MailMember"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(alias)
+
+NSSOV_CBPRIV(alias,
+	struct berval name;
+	char buf[256];);
+
+static int write_alias(nssov_alias_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32,tmp2int32,tmp3int32;
+	struct berval tmparr[2], empty;
+	struct berval *names, *members;
+	Attribute *a;
+	int i;
+
+	/* get the name of the alias */
+	if (BER_BVISNULL(&cbp->name))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[0].an_desc);
+		if ( !a )
+		{
+			Debug(LDAP_DEBUG_ANY,"alias entry %s does not contain %s value\n",
+				entry->e_name.bv_val,cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		names = a->a_vals;
+	}
+	else
+	{
+		names=tmparr;
+		names[0]=cbp->name;
+		BER_BVZERO(&names[1]);
+	}
+	/* get the members of the alias */
+ 	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[1].an_desc);
+	if ( !a ) {
+		BER_BVZERO( &empty );
+		members = &empty;
+	} else {
+		members = a->a_vals;
+	}
+	/* for each name, write an entry */
+	for (i=0;!BER_BVISNULL(&names[i]);i++)
+	{
+		WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+		WRITE_BERVAL(cbp->fp,&names[i]);
+		WRITE_BVARRAY(cbp->fp,members);
+	}
+	return 0;
+}
+
+NSSOV_CB(alias)
+
+NSSOV_HANDLE(
+	alias,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_alias_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_ALIAS_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	alias,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.name);,
+	Debug(LDAP_DEBUG,"nssov_alias_all()\n");,
+	NSLCD_ACTION_ALIAS_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/ether.c b/contrib/slapd-modules/nssov/ether.c
new file mode 100644
index 0000000..cb18f1b
--- /dev/null
+++ b/contrib/slapd-modules/nssov/ether.c
@@ -0,0 +1,167 @@
+/* ether.c - ethernet address lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+struct ether_addr {
+  uint8_t ether_addr_octet[6];
+};
+
+/* ( nisSchema.2.11 NAME 'ieee802Device' SUP top AUXILIARY
+ *   DESC 'A device with a MAC address; device SHOULD be
+ *         used as a structural class'
+ *   MAY macAddress )
+ */
+
+/* the basic search filter for searches */
+static struct berval ether_filter = BER_BVC("(objectClass=ieee802Device)");
+
+/* the attributes to request with searches */
+static struct berval ether_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("macAddress"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(ether)
+
+NSSOV_CBPRIV(ether,
+	char buf[256];
+	struct berval name;
+	struct berval addr;);
+
+#define WRITE_ETHER(fp,addr) \
+  {int ao[6]; \
+  sscanf(addr.bv_val,"%02x:%02x:%02x:%02x:%02x:%02x", \
+  	&ao[0], &ao[1], &ao[2], &ao[3], &ao[4], &ao[5] );\
+	tmpaddr.ether_addr_octet[0] = ao[0]; \
+	tmpaddr.ether_addr_octet[1] = ao[1]; \
+	tmpaddr.ether_addr_octet[2] = ao[2]; \
+	tmpaddr.ether_addr_octet[3] = ao[3]; \
+	tmpaddr.ether_addr_octet[4] = ao[4]; \
+	tmpaddr.ether_addr_octet[5] = ao[5]; } \
+  WRITE(fp,&tmpaddr,sizeof(uint8_t[6]));
+
+static int write_ether(nssov_ether_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	struct ether_addr tmpaddr;
+	struct berval tmparr[2];
+	struct berval *names,*ethers;
+	Attribute *a;
+	int i,j;
+
+	/* get the name of the ether entry */
+	if (BER_BVISNULL(&cbp->name))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[0].an_desc);
+		if ( !a )
+		{
+			Debug(LDAP_DEBUG_ANY,"ether entry %s does not contain %s value\n",
+							entry->e_name.bv_val,cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		names = a->a_vals;
+	}
+	else
+	{
+		names=tmparr;
+		names[0]=cbp->name;
+		BER_BVZERO(&names[1]);
+	}
+	/* get the addresses */
+	if (BER_BVISNULL(&cbp->addr))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[1].an_desc);
+		if ( !a )
+		{
+			Debug(LDAP_DEBUG_ANY,"ether entry %s does not contain %s value\n",
+							entry->e_name.bv_val,cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		ethers = a->a_vals;
+		/* TODO: move parsing of addresses up here */
+	}
+	else
+	{
+		ethers=tmparr;
+		ethers[0]=cbp->addr;
+		BER_BVZERO(&ethers[1]);
+	}
+	/* write entries for all names and addresses */
+	for (i=0;!BER_BVISNULL(&names[i]);i++)
+		for (j=0;!BER_BVISNULL(&ethers[j]);j++)
+		{
+			WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+			WRITE_BERVAL(cbp->fp,&names[i]);
+			WRITE_ETHER(cbp->fp,ethers[j]);
+		}
+	return 0;
+}
+
+NSSOV_CB(ether)
+
+NSSOV_HANDLE(
+	ether,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.addr);
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_ether_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_ETHER_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	ether,byether,
+	struct ether_addr addr;
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.name);
+	READ(fp,&addr,sizeof(uint8_t[6]));
+	cbp.addr.bv_len = snprintf(cbp.buf,sizeof(cbp.buf), "%x:%x:%x:%x:%x:%x",
+		addr.ether_addr_octet[0],
+		addr.ether_addr_octet[1],
+		addr.ether_addr_octet[2],
+		addr.ether_addr_octet[3],
+		addr.ether_addr_octet[4],
+		addr.ether_addr_octet[5]);
+	cbp.addr.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_ether_byether(%s)\n",cbp.addr.bv_val);,
+	NSLCD_ACTION_ETHER_BYETHER,
+	nssov_filter_byid(cbp.mi,1,&cbp.addr,&filter)
+)
+
+NSSOV_HANDLE(
+	ether,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.addr);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_ether_all()\n");,
+	NSLCD_ACTION_ETHER_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/group.c b/contrib/slapd-modules/nssov/group.c
new file mode 100644
index 0000000..1d93451
--- /dev/null
+++ b/contrib/slapd-modules/nssov/group.c
@@ -0,0 +1,346 @@
+/* group.c - group lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008-2009 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* for gid_t */
+#include <grp.h>
+
+/* ( nisSchema.2.2 NAME 'posixGroup' SUP top STRUCTURAL
+ *   DESC 'Abstraction of a group of accounts'
+ *   MUST ( cn $ gidNumber )
+ *   MAY ( userPassword $ memberUid $ description ) )
+ *
+ * apart from that the above the uniqueMember attributes may be
+ * supported in a coming release (they map to DNs, which is an extra
+ * lookup step)
+ *
+ * using nested groups (groups that are member of a group) is currently
+ * not supported, this may be added in a later release
+ */
+
+/* the basic search filter for searches */
+static struct berval group_filter = BER_BVC("(objectClass=posixGroup)");
+
+/* the attributes to request with searches */
+static struct berval group_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("userPassword"),
+	BER_BVC("gidNumber"),
+	BER_BVC("memberUid"),
+	BER_BVC("uniqueMember"),
+	BER_BVNULL
+};
+
+#define	CN_KEY	0
+#define	PWD_KEY	1
+#define	GID_KEY	2
+#define	UID_KEY	3
+#define	MEM_KEY	4
+
+/* default values for attributes */
+static struct berval default_group_userPassword     = BER_BVC("*"); /* unmatchable */
+
+NSSOV_CBPRIV(group,
+	nssov_info *ni;
+	char buf[256];
+	struct berval name;
+	struct berval gidnum;
+	struct berval user;
+	int wantmembers;);
+
+/* create a search filter for searching a group entry
+	 by member uid, return -1 on errors */
+static int mkfilter_group_bymember(nssov_group_cbp *cbp,struct berval *buf)
+{
+	struct berval dn;
+	/* try to translate uid to DN */
+	nssov_uid2dn(cbp->op,cbp->ni,&cbp->user,&dn);
+	if (BER_BVISNULL(&dn)) {
+		if (cbp->user.bv_len + cbp->mi->mi_filter.bv_len + cbp->mi->mi_attrs[UID_KEY].an_desc->ad_cname.bv_len + 6 >
+			buf->bv_len )
+			return -1;
+		buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
+			cbp->mi->mi_filter.bv_val, cbp->mi->mi_attrs[UID_KEY].an_desc->ad_cname.bv_val,
+			cbp->user.bv_val );
+	} else { /* also lookup using user DN */
+		if (cbp->user.bv_len + cbp->mi->mi_filter.bv_len + cbp->mi->mi_attrs[UID_KEY].an_desc->ad_cname.bv_len +
+			dn.bv_len + cbp->mi->mi_attrs[MEM_KEY].an_desc->ad_cname.bv_len + 12 > buf->bv_len )
+			return -1;
+		buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(|(%s=%s)(%s=%s)))",
+			cbp->mi->mi_filter.bv_val,
+			cbp->mi->mi_attrs[UID_KEY].an_desc->ad_cname.bv_val, cbp->user.bv_val,
+			cbp->mi->mi_attrs[MEM_KEY].an_desc->ad_cname.bv_val, dn.bv_val );
+	}
+	return 0;
+}
+
+NSSOV_INIT(group)
+
+/*
+	 Checks to see if the specified name is a valid group name.
+
+	 This test is based on the definition from POSIX (IEEE Std 1003.1, 2004,
+	 3.189 Group Name and 3.276 Portable Filename Character Set):
+	 http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_189
+	 http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_276
+
+	 The standard defines group names valid if they only contain characters from
+	 the set [A-Za-z0-9._-] where the hyphen should not be used as first
+	 character.
+*/
+static int isvalidgroupname(struct berval *name)
+{
+	int i;
+
+	if ( !name->bv_val || !name->bv_len )
+		return 0;
+	/* check first character */
+	if ( ! ( (name->bv_val[0]>='A' && name->bv_val[0] <= 'Z') ||
+					 (name->bv_val[0]>='a' && name->bv_val[0] <= 'z') ||
+					 (name->bv_val[0]>='0' && name->bv_val[0] <= '9') ||
+					 name->bv_val[0]=='.' || name->bv_val[0]=='_' ) )
+		return 0;
+	/* check other characters */
+	for (i=1;i<name->bv_len;i++)
+	{
+#ifndef STRICT_GROUPS
+		/* allow spaces too */
+		if (name->bv_val[i] == ' ') continue;
+#endif
+		if ( ! ( (name->bv_val[i]>='A' && name->bv_val[i] <= 'Z') ||
+						 (name->bv_val[i]>='a' && name->bv_val[i] <= 'z') ||
+						 (name->bv_val[i]>='0' && name->bv_val[i] <= '9') ||
+						 name->bv_val[i]=='.' || name->bv_val[i]=='_' || name->bv_val[i]=='-') )
+			return 0;
+	}
+	/* no test failed so it must be good */
+	return -1;
+}
+
+static int write_group(nssov_group_cbp *cbp,Entry *entry)
+{
+	struct berval tmparr[2], tmpgid[2];
+	struct berval *names,*gids,*members;
+	struct berval passwd = {0};
+	Attribute *a;
+	int i,j,nummembers,rc = 0;
+
+	/* get group name (cn) */
+	if (BER_BVISNULL(&cbp->name))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[CN_KEY].an_desc);
+		if ( !a )
+		{
+			Debug(LDAP_DEBUG_ANY,"group entry %s does not contain %s value\n",
+					entry->e_name.bv_val, cbp->mi->mi_attrs[CN_KEY].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		names = a->a_vals;
+	}
+	else
+	{
+		names=tmparr;
+		names[0]=cbp->name;
+		BER_BVZERO(&names[1]);
+	}
+	/* get the group id(s) */
+	if (BER_BVISNULL(&cbp->gidnum))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[GID_KEY].an_desc);
+		if ( !a )
+		{
+			Debug(LDAP_DEBUG_ANY,"group entry %s does not contain %s value\n",
+					entry->e_name.bv_val, cbp->mi->mi_attrs[GID_KEY].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		gids = a->a_vals;
+	}
+	else
+	{
+		gids=tmpgid;
+		gids[0]=cbp->gidnum;
+		BER_BVZERO(&gids[1]);
+	}
+	/* get group passwd (userPassword) (use only first entry) */
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[PWD_KEY].an_desc);
+	if (a)
+		get_userpassword(&a->a_vals[0], &passwd);
+	if (BER_BVISNULL(&passwd))
+		passwd=default_group_userPassword;
+	/* get group members (memberUid&uniqueMember) */
+	if (cbp->wantmembers) {
+		Attribute *b;
+		i = 0; j = 0;
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[UID_KEY].an_desc);
+		b = attr_find(entry->e_attrs, cbp->mi->mi_attrs[MEM_KEY].an_desc);
+		if ( a )
+			i += a->a_numvals;
+		if ( b )
+			i += b->a_numvals;
+		if ( i ) {
+			members = cbp->op->o_tmpalloc( (i+1) * sizeof(struct berval), cbp->op->o_tmpmemctx );
+			
+			if ( a ) {
+				for (i=0; i<a->a_numvals; i++) {
+					if (isvalidusername(&a->a_vals[i])) {
+						ber_dupbv_x(&members[j],&a->a_vals[i],cbp->op->o_tmpmemctx);
+						j++;
+					}
+				}
+			}
+			a = b;
+			if ( a ) {
+				for (i=0; i<a->a_numvals; i++) {
+					if (nssov_dn2uid(cbp->op,cbp->ni,&a->a_nvals[i],&members[j]))
+						j++;
+				}
+			}
+			nummembers = j;
+			BER_BVZERO(&members[j]);
+		} else {
+			members=NULL;
+			nummembers = 0;
+		}
+
+	} else {
+		members=NULL;
+		nummembers = 0;
+	}
+	/* write entries for all names and gids */
+	for (i=0;!BER_BVISNULL(&names[i]);i++)
+	{
+		if (!isvalidgroupname(&names[i]))
+		{
+			Debug(LDAP_DEBUG_ANY,"nssov: group entry %s contains invalid group name: \"%s\"\n",
+													entry->e_name.bv_val,names[i].bv_val );
+		}
+		else
+		{
+			for (j=0;!BER_BVISNULL(&gids[j]);j++)
+			{
+				char *tmp;
+				int tmpint32;
+				gid_t gid;
+				gid = strtol(gids[j].bv_val, &tmp, 0);
+				if ( *tmp ) {
+					Debug(LDAP_DEBUG_ANY,"nssov: group entry %s contains non-numeric %s value: \"%s\"\n",
+						entry->e_name.bv_val, cbp->mi->mi_attrs[GID_KEY].an_desc->ad_cname.bv_val,
+						names[i].bv_val);
+					continue;
+				}
+				WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+				WRITE_BERVAL(cbp->fp,&names[i]);
+				WRITE_BERVAL(cbp->fp,&passwd);
+				WRITE_INT32(cbp->fp,gid);
+				/* write a list of values */
+				WRITE_INT32(cbp->fp,nummembers);
+				if (nummembers)
+				{
+					int k;
+					for (k=0;k<nummembers;k++) {
+						WRITE_BERVAL(cbp->fp,&members[k]);
+					}
+				}
+			}
+		}
+	}
+	/* free and return */
+	if (members!=NULL)
+		ber_bvarray_free_x( members, cbp->op->o_tmpmemctx );
+	return rc;
+}
+
+NSSOV_CB(group)
+
+NSSOV_HANDLE(
+	group,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;
+	if (!isvalidgroupname(&cbp.name)) {
+		Debug(LDAP_DEBUG_ANY,"nssov_group_byname(%s): invalid group name\n",cbp.name.bv_val);
+		return -1;
+	}
+	cbp.wantmembers = 1;
+	cbp.ni = ni;
+	BER_BVZERO(&cbp.gidnum);
+	BER_BVZERO(&cbp.user);,
+	Debug(LDAP_DEBUG_TRACE,"nslcd_group_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_GROUP_BYNAME,
+	nssov_filter_byname(cbp.mi,CN_KEY,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	group,bygid,
+	gid_t gid;
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_INT32(fp,gid);
+	cbp.gidnum.bv_val = cbp.buf;
+	cbp.gidnum.bv_len = snprintf(cbp.buf,sizeof(cbp.buf),"%d",gid);
+	cbp.wantmembers = 1;
+	cbp.ni = ni;
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.user);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_group_bygid(%s)\n",cbp.gidnum.bv_val);,
+	NSLCD_ACTION_GROUP_BYGID,
+	nssov_filter_byid(cbp.mi,GID_KEY,&cbp.gidnum,&filter)
+)
+
+NSSOV_HANDLE(
+	group,bymember,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.buf);
+	cbp.user.bv_len = tmpint32;
+	cbp.user.bv_val = cbp.buf;
+	if (!isvalidusername(&cbp.user)) {
+		Debug(LDAP_DEBUG_ANY,"nssov_group_bymember(%s): invalid user name\n",cbp.user.bv_val);
+		return -1;
+	}
+	cbp.wantmembers = 0;
+	cbp.ni = ni;
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.gidnum);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_group_bymember(%s)\n",cbp.user.bv_val);,
+	NSLCD_ACTION_GROUP_BYMEMBER,
+	mkfilter_group_bymember(&cbp,&filter)
+)
+
+NSSOV_HANDLE(
+	group,all,
+	struct berval filter;
+	/* no parameters to read */
+	cbp.wantmembers = 1;
+	cbp.ni = ni;
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.gidnum);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_group_all()\n");,
+	NSLCD_ACTION_GROUP_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/host.c b/contrib/slapd-modules/nssov/host.c
new file mode 100644
index 0000000..008b454
--- /dev/null
+++ b/contrib/slapd-modules/nssov/host.c
@@ -0,0 +1,161 @@
+/* host.c - host lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* ( nisSchema.2.6 NAME 'ipHost' SUP top AUXILIARY
+ *	 DESC 'Abstraction of a host, an IP device. The distinguished
+ *				 value of the cn attribute denotes the host's canonical
+ *				 name. Device SHOULD be used as a structural class'
+ *	 MUST ( cn $ ipHostNumber )
+ *	 MAY ( l $ description $ manager ) )
+ */
+
+/* the basic search filter for searches */
+static struct berval host_filter = BER_BVC("(objectClass=ipHost)");
+
+/* the attributes to request with searches */
+static struct berval host_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("ipHostNumber"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(host)
+
+NSSOV_CBPRIV(host,
+	char buf[1024];
+	struct berval name;
+	struct berval addr;);
+
+/* write a single host entry to the stream */
+static int write_host(nssov_host_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	int numaddr,i,numname,dupname;
+	struct berval name,*names,*addrs;
+	Attribute *a;
+
+	/* get the most canonical name */
+	nssov_find_rdnval( &entry->e_nname, cbp->mi->mi_attrs[0].an_desc, &name );
+	/* get the other names for the host */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[0].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"host entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	names = a->a_vals;
+	numname = a->a_numvals;
+	/* if the name is not yet found, get the first entry from names */
+	if (BER_BVISNULL(&name)) {
+		name=names[0];
+		dupname = 0;
+	} else {
+		dupname = -1;
+		for (i=0; i<numname; i++) {
+			if ( bvmatch(&name, &a->a_nvals[i])) {
+				dupname = i;
+				break;
+			}
+		}
+	}
+	/* get the addresses */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[1].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"host entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	addrs = a->a_vals;
+	numaddr = a->a_numvals;
+	/* write the entry */
+	WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+	WRITE_BERVAL(cbp->fp,&name);
+	if ( dupname >= 0 ) {
+		WRITE_INT32(cbp->fp,numname-1);
+	} else {
+		WRITE_INT32(cbp->fp,numname);
+	}
+	for (i=0;i<numname;i++) {
+		if (i == dupname) continue;
+		WRITE_BERVAL(cbp->fp,&names[i]);
+	}
+	WRITE_INT32(cbp->fp,numaddr);
+	for (i=0;i<numaddr;i++)
+	{
+		WRITE_ADDRESS(cbp->fp,&addrs[i]);
+	}
+	return 0;
+}
+
+NSSOV_CB(host)
+
+NSSOV_HANDLE(
+	host,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.addr);
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_host_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_HOST_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	host,byaddr,
+	int af;
+	char addr[64];
+	int len=sizeof(addr);
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.name);
+	READ_ADDRESS(fp,addr,len,af);
+	/* translate the address to a string */
+	if (inet_ntop(af,addr,cbp.buf,sizeof(cbp.buf))==NULL)
+	{
+		Debug(LDAP_DEBUG_ANY,"nssov: unable to convert address to string\n");
+		return -1;
+	}
+	cbp.addr.bv_val = cbp.buf;
+	cbp.addr.bv_len = strlen(cbp.buf);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_host_byaddr(%s)\n",cbp.addr.bv_val);,
+	NSLCD_ACTION_HOST_BYADDR,
+	nssov_filter_byid(cbp.mi,1,&cbp.addr,&filter)
+)
+
+NSSOV_HANDLE(
+	host,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.addr);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_host_all()\n");,
+	NSLCD_ACTION_HOST_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/ldapns.schema b/contrib/slapd-modules/nssov/ldapns.schema
new file mode 100644
index 0000000..f6f7c9f
--- /dev/null
+++ b/contrib/slapd-modules/nssov/ldapns.schema
@@ -0,0 +1,38 @@
+# $OpenLDAP$
+# $Id: ldapns.schema,v 1.3 2009-10-01 19:17:20 tedcheng Exp $
+# LDAP Name Service Additional Schema
+# http://www.iana.org/assignments/gssapi-service-names
+
+#
+# Not part of the distribution: this is a workaround!
+#
+
+attributetype ( 1.3.6.1.4.1.5322.17.2.1 NAME 'authorizedService'
+          DESC 'IANA GSS-API authorized service name'
+          EQUALITY caseIgnoreMatch
+          SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} )
+
+attributetype ( 1.3.6.1.4.1.5322.17.2.2 NAME 'loginStatus'
+          DESC 'Currently logged in sessions for a user'
+          EQUALITY caseIgnoreMatch
+          SUBSTR caseIgnoreSubstringsMatch
+          ORDERING caseIgnoreOrderingMatch
+          SYNTAX OMsDirectoryString )
+
+objectclass ( 1.3.6.1.4.1.5322.17.1.1 NAME 'authorizedServiceObject'
+          DESC 'Auxiliary object class for adding authorizedService attribute'
+          SUP top
+          AUXILIARY
+          MAY authorizedService )
+
+objectclass ( 1.3.6.1.4.1.5322.17.1.2 NAME 'hostObject'
+          DESC 'Auxiliary object class for adding host attribute'
+          SUP top
+          AUXILIARY
+          MAY host )
+
+objectclass ( 1.3.6.1.4.1.5322.17.1.3 NAME 'loginStatusObject'
+          DESC 'Auxiliary object class for login status attribute'
+          SUP top
+          AUXILIARY
+          MAY loginStatus )
diff --git a/contrib/slapd-modules/nssov/netgroup.c b/contrib/slapd-modules/nssov/netgroup.c
new file mode 100644
index 0000000..7211a9a
--- /dev/null
+++ b/contrib/slapd-modules/nssov/netgroup.c
@@ -0,0 +1,199 @@
+/* netgroup.c - netgroup lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+#include <ac/ctype.h>
+
+/* ( nisSchema.2.8 NAME 'nisNetgroup' SUP top STRUCTURAL
+ *   DESC 'Abstraction of a netgroup. May refer to other netgroups'
+ *   MUST cn
+ *   MAY ( nisNetgroupTriple $ memberNisNetgroup $ description ) )
+ */
+
+/* the basic search filter for searches */
+static struct berval netgroup_filter = BER_BVC("(objectClass=nisNetgroup)");
+
+/* the attributes to request with searches */
+static struct berval netgroup_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("nisNetgroupTriple"),
+	BER_BVC("memberNisNetgroup"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(netgroup)
+
+NSSOV_CBPRIV(netgroup,
+	char buf[256];
+	struct berval name;);
+
+static int write_string_stripspace_len(TFILE *fp,const char *str,int len)
+{
+	int32_t tmpint32;
+	int i,j;
+	DEBUG_PRINT("WRITE_STRING: var="__STRING(str)" string=\"%s\"",str);
+	if (str==NULL)
+	{
+		WRITE_INT32(fp,0);
+	}
+	else
+	{
+		/* skip leading spaces */
+		for (i=0;(str[i]!='\0')&&(isspace(str[i]));i++)
+			/* nothing else to do */ ;
+		/* skip trailing spaces */
+		for (j=len;(j>i)&&(isspace(str[j-1]));j--)
+			/* nothing else to do */ ;
+		/* write length of string */
+		WRITE_INT32(fp,j-i);
+		/* write string itself */
+		if (j>i)
+		{
+			WRITE(fp,str+i,j-i);
+		}
+	}
+	/* we're done */
+	return 0;
+}
+
+#define WRITE_STRING_STRIPSPACE_LEN(fp,str,len) \
+	if (write_string_stripspace_len(fp,str,len)) \
+		return -1;
+
+#define WRITE_STRING_STRIPSPACE(fp,str) \
+	WRITE_STRING_STRIPSPACE_LEN(fp,str,strlen(str))
+
+static int write_netgroup_triple(TFILE *fp,const char *triple)
+{
+	int32_t tmpint32;
+	int i;
+	int hostb,hoste,userb,usere,domainb,domaine;
+	/* skip leading spaces */
+	for (i=0;(triple[i]!='\0')&&(isspace(triple[i]));i++)
+		/* nothing else to do */ ;
+	/* we should have a bracket now */
+	if (triple[i]!='(')
+	{
+		Debug(LDAP_DEBUG_ANY,"write_netgroup_triple(): entry does not begin with '(' (entry skipped)\n" );
+		return 0;
+	}
+	i++;
+	hostb=i;
+	/* find comma (end of host string) */
+	for (;(triple[i]!='\0')&&(triple[i]!=',');i++)
+		/* nothing else to do */ ;
+	if (triple[i]!=',')
+	{
+		Debug(LDAP_DEBUG_ANY,"write_netgroup_triple(): missing ',' (entry skipped)\n" );
+		return 0;
+	}
+	hoste=i;
+	i++;
+	userb=i;
+	/* find comma (end of user string) */
+	for (;(triple[i]!='\0')&&(triple[i]!=',');i++)
+		/* nothing else to do */ ;
+	if (triple[i]!=',')
+	{
+		Debug(LDAP_DEBUG_ANY,"write_netgroup_triple(): missing ',' (entry skipped)\n" );
+		return 0;
+	}
+	usere=i;
+	i++;
+	domainb=i;
+	/* find closing bracket (end of domain string) */
+	for (;(triple[i]!='\0')&&(triple[i]!=')');i++)
+		/* nothing else to do */ ;
+	if (triple[i]!=')')
+	{
+		Debug(LDAP_DEBUG_ANY,"write_netgroup_triple(): missing ')' (entry skipped)\n" );
+		return 0;
+	}
+	domaine=i;
+	i++;
+	/* skip trailing spaces */
+	for (;(triple[i]!='\0')&&(isspace(triple[i]));i++)
+		/* nothing else to do */ ;
+	/* if anything is left in the string we have a problem */
+	if (triple[i]!='\0')
+	{
+		Debug(LDAP_DEBUG_ANY,"write_netgroup_triple(): string contains trailing data (entry skipped)\n" );
+		return 0;
+	}
+	/* write strings */
+	WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
+	WRITE_INT32(fp,NSLCD_NETGROUP_TYPE_TRIPLE);
+	WRITE_STRING_STRIPSPACE_LEN(fp,triple+hostb,hoste-hostb)
+	WRITE_STRING_STRIPSPACE_LEN(fp,triple+userb,usere-userb)
+	WRITE_STRING_STRIPSPACE_LEN(fp,triple+domainb,domaine-domainb)
+	/* we're done */
+	return 0;
+}
+
+static int write_netgroup(nssov_netgroup_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	int i;
+	Attribute *a;
+
+	/* get the netgroup triples and member */
+	a = attr_find(entry->e_attrs,cbp->mi->mi_attrs[1].an_desc);
+	if ( a ) {
+	/* write the netgroup triples */
+		for (i=0;i<a->a_numvals;i++)
+		{
+			if (write_netgroup_triple(cbp->fp, a->a_vals[i].bv_val))
+				return -1;
+		}
+	}
+	a = attr_find(entry->e_attrs,cbp->mi->mi_attrs[2].an_desc);
+	if ( a ) {
+	/* write netgroup members */
+		for (i=0;i<a->a_numvals;i++)
+		{
+			/* write the result code */
+			WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+			/* write triple indicator */
+			WRITE_INT32(cbp->fp,NSLCD_NETGROUP_TYPE_NETGROUP);
+			/* write netgroup name */
+			if (write_string_stripspace_len(cbp->fp,a->a_vals[i].bv_val,a->a_vals[i].bv_len))
+				return -1;
+		}
+	}
+	/* we're done */
+	return 0;
+}
+
+NSSOV_CB(netgroup)
+
+NSSOV_HANDLE(
+	netgroup,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.buf);,
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;
+	Debug(LDAP_DEBUG_TRACE,"nssov_netgroup_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_NETGROUP_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
diff --git a/contrib/slapd-modules/nssov/network.c b/contrib/slapd-modules/nssov/network.c
new file mode 100644
index 0000000..0f67fa8
--- /dev/null
+++ b/contrib/slapd-modules/nssov/network.c
@@ -0,0 +1,161 @@
+/* network.c - network address lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+#include <ac/socket.h>
+
+/* ( nisSchema.2.7 NAME 'ipNetwork' SUP top STRUCTURAL
+ *   DESC 'Abstraction of a network. The distinguished value of
+ *   MUST ( cn $ ipNetworkNumber )
+ *   MAY ( ipNetmaskNumber $ l $ description $ manager ) )
+ */
+
+/* the basic search filter for searches */
+static struct berval network_filter = BER_BVC("(objectClass=ipNetwork)");
+
+/* the attributes used in searches */
+static struct berval network_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("ipNetworkNumber"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(network)
+
+NSSOV_CBPRIV(network,
+	char buf[1024];
+	struct berval name;
+	struct berval addr;);
+
+/* write a single network entry to the stream */
+static int write_network(nssov_network_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	int numaddr,i,numname,dupname;
+	struct berval name, *names, *addrs;
+	Attribute *a;
+
+	/* get the most canonical name */
+	nssov_find_rdnval( &entry->e_nname, cbp->mi->mi_attrs[0].an_desc, &name);
+	/* get the other names for the network */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[0].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"network entry %s does not contain %s value\n",
+			entry->e_name.bv_val,cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	names = a->a_vals;
+	numname = a->a_numvals;
+	/* if the name is not yet found, get the first entry from names */
+	if (BER_BVISNULL(&name)) {
+		name=names[0];
+		dupname = 0;
+	} else {
+		dupname = -1;
+        for (i=0; i<numname; i++) {
+            if ( bvmatch(&name, &a->a_nvals[i])) {
+                dupname = i;
+                break;
+            }
+        }
+	}
+	/* get the addresses */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[1].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"network entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	addrs = a->a_vals;
+	numaddr = a->a_numvals;
+	/* write the entry */
+	WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+	WRITE_BERVAL(cbp->fp,&name);
+	if ( dupname >= 0 ) {
+		WRITE_INT32(cbp->fp,numname-1);
+	} else {
+		WRITE_INT32(cbp->fp,numname);
+	}
+	for (i=0;i<numname;i++) {
+		if (i == dupname) continue;
+		WRITE_BERVAL(cbp->fp,&names[i]);
+	}
+	WRITE_INT32(cbp->fp,numaddr);
+	for (i=0;i<numaddr;i++)
+	{
+		WRITE_ADDRESS(cbp->fp,&addrs[i]);
+	}
+	return 0;
+}
+
+NSSOV_CB(network)
+
+NSSOV_HANDLE(
+	network,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.addr);
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_network_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_NETWORK_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	network,byaddr,
+	int af;
+	char addr[64];
+	int len=sizeof(addr);
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.name);
+	READ_ADDRESS(fp,addr,len,af);
+	/* translate the address to a string */
+	if (inet_ntop(af,addr,cbp.buf,sizeof(cbp.buf))==NULL)
+	{
+		Debug(LDAP_DEBUG_ANY,"nssov: unable to convert address to string\n");
+		return -1;
+	}
+	cbp.addr.bv_val = cbp.buf;
+	cbp.addr.bv_len = strlen(cbp.buf);,
+	Debug(LDAP_DEBUG_TRACE,"nslcd_network_byaddr(%s)\n",cbp.addr.bv_val);,
+	NSLCD_ACTION_NETWORK_BYADDR,
+	nssov_filter_byid(cbp.mi,1,&cbp.addr,&filter)
+)
+
+NSSOV_HANDLE(
+	network,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.addr);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_network_all()\n");,
+	NSLCD_ACTION_NETWORK_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/nss-pam-ldapd/README b/contrib/slapd-modules/nssov/nss-pam-ldapd/README
new file mode 100644
index 0000000..4176ad7
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nss-pam-ldapd/README
@@ -0,0 +1,15 @@
+These files were pulled from the nss-pam-ldapd project version 0.9.4.
+Copyright notices are in the individual files.
+
+This is not the full distribution of nss-pam-ldapd, and does not
+include the client-side stub libraries.  Get the latest release of
+nss-pam-ldapd from http://arthurdejong.org/nss-pam-ldapd/ to use
+this overlay.
+
+If your system already has the nss-pam-ldapd stub libraries
+installed, make sure the versions match the version number
+shown above. Otherwise, there may be incompatible differences in
+the protocols being used. Currently nssov requires at least
+version 0.9.0. If your system's version is older, you will need
+to install the client-side stubs from source.
+
diff --git a/contrib/slapd-modules/nssov/nss-pam-ldapd/attrs.h b/contrib/slapd-modules/nssov/nss-pam-ldapd/attrs.h
new file mode 100644
index 0000000..2efedc6
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nss-pam-ldapd/attrs.h
@@ -0,0 +1,91 @@
+/*
+   attrs.h - wrapper macros for the gcc __attribute__(()) directive
+
+   Copyright (C) 2007, 2008, 2012 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+#ifndef COMPAT__ATTRS_H
+#define COMPAT__ATTRS_H 1
+
+/* macro for testing the version of GCC */
+#define GCC_VERSION(major, minor)                                           \
+  ((__GNUC__ > (major)) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
+
+/* These are macros to use some gcc-specific flags in case they're available
+   and otherwise define them to empty strings. This allows us to give
+   the compiler some extra information.
+   See http://gcc.gnu.org/onlinedocs/gcc/Attribute-Syntax.html
+   for a list of attributes supported by gcc */
+
+/* this is used to flag function parameters that are not used in the function
+   body. */
+#if GCC_VERSION(3, 0)
+#define UNUSED(x)   x __attribute__((__unused__))
+#else
+#define UNUSED(x)   x
+#endif
+
+/* this is used to add extra format checking to the function calls as if this
+   was a printf()-like function */
+#if GCC_VERSION(3, 0)
+#define LIKE_PRINTF(format_idx, arg_idx)                                    \
+                    __attribute__((__format__(__printf__, format_idx, arg_idx)))
+#else
+#define LIKE_PRINTF(format_idx, arg_idx) /* no attribute */
+#endif
+
+/* indicates that the function is "pure": its result is purely based on
+   the parameters and has no side effects or used static data */
+#if GCC_VERSION(3, 0)
+#define PURE        __attribute__((__pure__))
+#else
+#define PURE        /* no attribute */
+#endif
+
+/* the function returns a new data structure that has been freshly
+   allocated */
+#if GCC_VERSION(3, 0)
+#define LIKE_MALLOC __attribute__((__malloc__))
+#else
+#define LIKE_MALLOC /* no attribute */
+#endif
+
+/* the function's return value should be used by the caller */
+#if GCC_VERSION(3, 4)
+#define MUST_USE    __attribute__((__warn_unused_result__))
+#else
+#define MUST_USE    /* no attribute */
+#endif
+
+/* the function's return value should be used by the caller */
+#if GCC_VERSION(2, 5)
+#define NORETURN    __attribute__((__noreturn__))
+#else
+#define NORETURN    /* no attribute */
+#endif
+
+/* define __STRING if it's not yet defined */
+#ifndef __STRING
+#ifdef __STDC__
+#define __STRING(x) #x
+#else /* __STDC__ */
+#define __STRING(x) "x"
+#endif /* not __STDC__ */
+#endif /* not __STRING */
+
+#endif /* not COMPAT__ATTRS_H */
diff --git a/contrib/slapd-modules/nssov/nss-pam-ldapd/nslcd-prot.h b/contrib/slapd-modules/nssov/nss-pam-ldapd/nslcd-prot.h
new file mode 100644
index 0000000..21ec7c2
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nss-pam-ldapd/nslcd-prot.h
@@ -0,0 +1,391 @@
+/*
+   nslcd-prot.h - helper macros for reading and writing in protocol streams
+
+   Copyright (C) 2006 West Consulting
+   Copyright (C) 2006-2014 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+#ifndef COMMON__NSLCD_PROT_H
+#define COMMON__NSLCD_PROT_H 1
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+#include "tio.h"
+
+/* If you use these macros you should define the following macros to
+   handle error conditions (these marcos should clean up and return from the
+   function):
+     ERROR_OUT_WRITEERROR(fp)
+     ERROR_OUT_READERROR(fp)
+     ERROR_OUT_BUFERROR(fp)
+     ERROR_OUT_NOSUCCESS(fp) */
+
+
+/* Debugging marcos that can be used to enable detailed protocol logging,
+   pass -DDEBUG_PROT to do overall protocol debugging, and -DDEBUG_PROT_DUMP
+   to dump the actual bytestream. */
+
+#ifdef DEBUG_PROT
+/* define a debugging macro to output logging */
+#include <string.h>
+#include <errno.h>
+#define DEBUG_PRINT(fmt, arg)                                               \
+  fprintf(stderr, "%s:%d:%s: " fmt "\n", __FILE__, __LINE__,                \
+          __PRETTY_FUNCTION__, arg);
+#else /* DEBUG_PROT */
+/* define an empty debug macro to disable logging */
+#define DEBUG_PRINT(fmt, arg)
+#endif /* not DEBUG_PROT */
+
+#ifdef DEBUG_PROT_DUMP
+/* define a debugging macro to output detailed logging */
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif /* HAVE_STDINT_H */
+static void debug_dump(const void *ptr, size_t size)
+{
+  int i;
+  for (i = 0; i < size; i++)
+    fprintf(stderr, " %02x", ((const uint8_t *)ptr)[i]);
+  fprintf(stderr, "\n");
+}
+#define DEBUG_DUMP(ptr, size)                                               \
+  fprintf(stderr, "%s:%d:%s:", __FILE__, __LINE__, __PRETTY_FUNCTION__);    \
+  debug_dump(ptr, size);
+#else /* DEBUG_PROT_DUMP */
+/* define an empty debug macro to disable logging */
+#define DEBUG_DUMP(ptr, size)
+#endif /* not DEBUG_PROT_DUMP */
+
+
+/* WRITE marcos, used for writing data, on write error they will
+   call the ERROR_OUT_WRITEERROR macro
+   these macros may require the availability of the following
+   variables:
+   int32_t tmpint32; - temporary variable
+   */
+
+#define WRITE(fp, ptr, size)                                                \
+  DEBUG_PRINT("WRITE       : var="__STRING(ptr)" size=%d", (int)size);      \
+  DEBUG_DUMP(ptr, size);                                                    \
+  if (tio_write(fp, ptr, (size_t)size))                                     \
+  {                                                                         \
+    char ebuf[128];                                                         \
+    int saved_errno = errno;                                                \
+    DEBUG_PRINT("WRITE       : var="__STRING(ptr)" error: %s",              \
+                AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)));            \
+    ERROR_OUT_WRITEERROR(fp);                                               \
+  }
+
+#define WRITE_INT32(fp, i)                                                  \
+  DEBUG_PRINT("WRITE_INT32 : var="__STRING(i)" int32=%08x", (int)i);        \
+  tmpint32 = htonl((int32_t)(i));                                           \
+  WRITE(fp, &tmpint32, sizeof(int32_t))
+
+#define WRITE_STRING(fp, str)                                               \
+  DEBUG_PRINT("WRITE_STRING: var="__STRING(str)" string=\"%s\"", (str));    \
+  if ((str) == NULL)                                                        \
+  {                                                                         \
+    WRITE_INT32(fp, 0);                                                     \
+  }                                                                         \
+  else                                                                      \
+  {                                                                         \
+    WRITE_INT32(fp, strlen(str));                                           \
+    tmpint32 = ntohl(tmpint32);                                             \
+    if (tmpint32 > 0)                                                       \
+    {                                                                       \
+      WRITE(fp, (str), tmpint32);                                           \
+    }                                                                       \
+  }
+
+#define WRITE_STRINGLIST(fp, arr)                                           \
+  if ((arr) == NULL)                                                        \
+  {                                                                         \
+    DEBUG_PRINT("WRITE_STRLST: var="__STRING(arr)" num=%d", 0);             \
+    WRITE_INT32(fp, 0);                                                     \
+  }                                                                         \
+  else                                                                      \
+  {                                                                         \
+    /* first determine length of array */                                   \
+    for (tmp3int32 = 0; (arr)[tmp3int32] != NULL; tmp3int32++)              \
+      /* noting */ ;                                                        \
+    /* write number of strings */                                           \
+    DEBUG_PRINT("WRITE_STRLST: var="__STRING(arr)" num=%d", (int)tmp3int32); \
+    WRITE_INT32(fp, tmp3int32);                                             \
+    /* write strings */                                                     \
+    for (tmp2int32 = 0; tmp2int32 < tmp3int32; tmp2int32++)                 \
+    {                                                                       \
+      WRITE_STRING(fp, (arr)[tmp2int32]);                                   \
+    }                                                                       \
+  }
+
+#define WRITE_STRINGLIST_EXCEPT(fp, arr, not)                               \
+  /* first determine length of array */                                     \
+  tmp3int32 = 0;                                                            \
+  for (tmp2int32 = 0; (arr)[tmp2int32] != NULL; tmp2int32++)                \
+    if (strcmp((arr)[tmp2int32], (not)) != 0)                               \
+      tmp3int32++;                                                          \
+  /* write number of strings (mius one because we intend to skip one) */    \
+  DEBUG_PRINT("WRITE_STRLST: var="__STRING(arr)" num=%d", (int)tmp3int32);  \
+  WRITE_INT32(fp, tmp3int32);                                               \
+  /* write strings */                                                       \
+  for (tmp2int32 = 0; (arr)[tmp2int32] != NULL; tmp2int32++)                \
+  {                                                                         \
+    if (strcmp((arr)[tmp2int32], (not)) != 0)                               \
+    {                                                                       \
+      WRITE_STRING(fp, (arr)[tmp2int32]);                                   \
+    }                                                                       \
+  }
+
+/* READ macros, used for reading data, on read error they will
+   call the ERROR_OUT_READERROR or ERROR_OUT_BUFERROR macro
+   these macros may require the availability of the following
+   variables:
+   int32_t tmpint32; - temporary variable
+   */
+
+#define READ(fp, ptr, size)                                                 \
+  if (tio_read(fp, ptr, (size_t)size))                                      \
+  {                                                                         \
+    char ebuf[128];                                                         \
+    int saved_errno = errno;                                                \
+    DEBUG_PRINT("READ       : var="__STRING(ptr)" error: %s",               \
+                AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)));            \
+    ERROR_OUT_READERROR(fp);                                                \
+  }                                                                         \
+  DEBUG_PRINT("READ       : var="__STRING(ptr)" size=%d", (int)(size));     \
+  DEBUG_DUMP(ptr, size);
+
+#define READ_INT32(fp, i)                                                   \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  (i) = (int32_t)ntohl(tmpint32);                                           \
+  DEBUG_PRINT("READ_INT32 : var="__STRING(i)" int32==%08x", (int)(i));
+
+/* read a string in a fixed-size "normal" buffer */
+#define READ_STRING(fp, buffer)                                             \
+  /* read the size of the string */                                         \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  tmpint32 = ntohl(tmpint32);                                               \
+  DEBUG_PRINT("READ_STRING: var="__STRING(buffer)" strlen=%d", tmpint32);   \
+  /* check if read would fit */                                             \
+  if (((size_t)tmpint32) >= sizeof(buffer))                                 \
+  {                                                                         \
+    /* will not fit */                                                      \
+    tmpint32 = (tmpint32 - sizeof(buffer)) + 1;                             \
+    DEBUG_PRINT("READ       : buffer %d bytes too small", tmpint32);        \
+    ERROR_OUT_BUFERROR(fp);                                                 \
+  }                                                                         \
+  /* read string from the stream */                                         \
+  if (tmpint32 > 0)                                                         \
+  {                                                                         \
+    READ(fp, buffer, (size_t)tmpint32);                                     \
+  }                                                                         \
+  /* null-terminate string in buffer */                                     \
+  buffer[tmpint32] = '\0';                                                  \
+  DEBUG_PRINT("READ_STRING: var="__STRING(buffer)" string=\"%s\"", buffer);
+
+
+/* READ BUF macros that read data into a pre-allocated buffer.
+   these macros may require the availability of the following
+   variables:
+   int32_t tmpint32; - temporary variable
+   char *buffer;     - pointer to a buffer for reading strings
+   size_t buflen;    - the size of the buffer
+   size_t bufptr;    - the current position in the buffer
+   */
+
+/* current position in the buffer */
+#define BUF_CUR                                                             \
+  (buffer + bufptr)
+
+/* check that the buffer has sz bytes left in it */
+#define BUF_CHECK(fp, sz)                                                   \
+  if ((bufptr + (size_t)(sz)) > buflen)                                     \
+  {                                                                         \
+    /* will not fit */                                                      \
+    tmpint32 = bufptr + (sz) - (buflen);                                    \
+    DEBUG_PRINT("READ       : buffer %d bytes too small", tmpint32);        \
+    ERROR_OUT_BUFERROR(fp);                                                 \
+  }
+
+/* move the buffer pointer */
+#define BUF_SKIP(sz)                                                        \
+  bufptr += (size_t)(sz);
+
+/* move BUF_CUR forward so that it is aligned to the specified
+   type width */
+#define BUF_ALIGN(fp, type)                                                 \
+  /* figure out number of bytes to skip forward */                         \
+  tmp2int32 = (sizeof(type) - ((BUF_CUR - (char *)NULL) % sizeof(type)))    \
+              % sizeof(type);                                               \
+  /* check and skip */                                                      \
+  BUF_CHECK(fp, tmp2int32);                                                 \
+  BUF_SKIP(tmp2int32);
+
+/* allocate a piece of the buffer to store an array in */
+#define BUF_ALLOC(fp, ptr, type, num)                                       \
+  /* align to the specified type width */                                   \
+  BUF_ALIGN(fp, type);                                                      \
+  /* check that we have enough room */                                      \
+  BUF_CHECK(fp, (size_t)(num) * sizeof(type));                              \
+  /* store the pointer */                                                   \
+  (ptr) = (type *)BUF_CUR;                                                  \
+  /* reserve the space */                                                   \
+  BUF_SKIP((size_t)(num) * sizeof(type));
+
+/* read a binary blob into the buffer */
+#define READ_BUF(fp, ptr, sz)                                               \
+  /* check that there is enough room and read */                            \
+  BUF_CHECK(fp, sz);                                                        \
+  READ(fp, BUF_CUR, (size_t)sz);                                            \
+  /* store pointer and skip */                                              \
+  (ptr) = BUF_CUR;                                                          \
+  BUF_SKIP(sz);
+
+/* read string in the buffer (using buffer, buflen and bufptr)
+   and store the actual location of the string in field */
+#define READ_BUF_STRING(fp, field)                                          \
+  /* read the size of the string */                                         \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  tmpint32 = ntohl(tmpint32);                                               \
+  DEBUG_PRINT("READ_BUF_STRING: var="__STRING(field)" strlen=%d", tmpint32); \
+  /* check if read would fit */                                             \
+  BUF_CHECK(fp, tmpint32 + 1);                                              \
+  /* read string from the stream */                                         \
+  if (tmpint32 > 0)                                                         \
+  {                                                                         \
+    READ(fp, BUF_CUR, (size_t)tmpint32);                                    \
+  }                                                                         \
+  /* null-terminate string in buffer */                                     \
+  BUF_CUR[tmpint32] = '\0';                                                 \
+  DEBUG_PRINT("READ_BUF_STRING: var="__STRING(field)" string=\"%s\"", BUF_CUR); \
+  /* prepare result */                                                      \
+  (field) = BUF_CUR;                                                        \
+  BUF_SKIP(tmpint32 + 1);
+
+/* read an array from a stream and store it as a null-terminated
+   array list (size for the array is allocated) */
+#define READ_BUF_STRINGLIST(fp, arr)                                        \
+  /* read the number of entries */                                          \
+  READ(fp, &tmp3int32, sizeof(int32_t));                                    \
+  tmp3int32 = ntohl(tmp3int32);                                             \
+  DEBUG_PRINT("READ_STRLST: var="__STRING(arr)" num=%d", (int)tmp3int32);   \
+  /* allocate room for *char[num + 1] */                                      \
+  BUF_ALLOC(fp, arr, char *, tmp3int32 + 1);                                \
+  /* read all entries */                                                    \
+  for (tmp2int32 = 0; tmp2int32 < tmp3int32; tmp2int32++)                   \
+  {                                                                         \
+    READ_BUF_STRING(fp, (arr)[tmp2int32]);                                  \
+  }                                                                         \
+  /* set last entry to NULL */                                              \
+  (arr)[tmp2int32] = NULL;
+
+
+/* SKIP macros for skipping over certain parts of the protocol stream. */
+
+/* skip a number of bytes forward */
+#define SKIP(fp, sz)                                                        \
+  DEBUG_PRINT("READ       : skip %d bytes", (int)(sz));                     \
+  /* read (skip) the specified number of bytes */                           \
+  if (tio_skip(fp, sz))                                                     \
+  {                                                                         \
+    char ebuf[128];                                                         \
+    int saved_errno = errno;                                                \
+    DEBUG_PRINT("READ       : skip error: %s",                              \
+                AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)));            \
+    ERROR_OUT_READERROR(fp);                                                \
+  }
+
+/* read a string from the stream but don't do anything with the result */
+#define SKIP_STRING(fp)                                                     \
+  /* read the size of the string */                                         \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  tmpint32 = ntohl(tmpint32);                                               \
+  DEBUG_PRINT("READ_STRING: skip %d bytes", (int)tmpint32);                 \
+  /* read (skip) the specified number of bytes */                           \
+  SKIP(fp, tmpint32);
+
+/* skip a list of strings */
+#define SKIP_STRINGLIST(fp)                                                 \
+  /* read the number of entries */                                          \
+  READ(fp, &tmp3int32, sizeof(int32_t));                                    \
+  tmp3int32 = ntohl(tmp3int32);                                             \
+  DEBUG_PRINT("READ_STRLST: skip %d strings", (int)tmp3int32);              \
+  /* read all entries */                                                    \
+  for (tmp2int32 = 0; tmp2int32 < tmp3int32; tmp2int32++)                   \
+  {                                                                         \
+    SKIP_STRING(fp);                                                        \
+  }
+
+
+/* These are functions and macros for performing common operations in
+   the nslcd request/response protocol. */
+
+/* returns a socket to the server or NULL on error (see errno),
+   socket should be closed with tio_close() */
+TFILE *nslcd_client_open(void)
+  MUST_USE;
+
+/* generic request code */
+#define NSLCD_REQUEST(fp, action, writefn)                                  \
+  /* open a client socket */                                                \
+  if ((fp = nslcd_client_open()) == NULL)                                   \
+  {                                                                         \
+    ERROR_OUT_OPENERROR;                                                    \
+  }                                                                         \
+  /* write a request header with a request code */                          \
+  WRITE_INT32(fp, (int32_t)NSLCD_VERSION)                                   \
+  WRITE_INT32(fp, (int32_t)action)                                          \
+  /* write the request parameters (if any) */                               \
+  writefn;                                                                  \
+  /* flush the stream */                                                    \
+  if (tio_flush(fp) < 0)                                                    \
+  {                                                                         \
+    char ebuf[128];                                                         \
+    int saved_errno = errno;                                                \
+    DEBUG_PRINT("WRITE_FLUSH : error: %s",                                  \
+                AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)));            \
+    ERROR_OUT_WRITEERROR(fp);                                               \
+  }                                                                         \
+  /* read and check response version number */                              \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  tmpint32 = ntohl(tmpint32);                                               \
+  if (tmpint32 != (int32_t)NSLCD_VERSION)                                   \
+  {                                                                         \
+    ERROR_OUT_READERROR(fp);                                                \
+  }                                                                         \
+  /* read and check response request number */                              \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  tmpint32 = ntohl(tmpint32);                                               \
+  if (tmpint32 != (int32_t)(action))                                        \
+  {                                                                         \
+    ERROR_OUT_READERROR(fp);                                                \
+  }
+
+/* Read the response code (the result code of the query) from
+   the stream. */
+#define READ_RESPONSE_CODE(fp)                                              \
+  READ(fp, &tmpint32, sizeof(int32_t));                                     \
+  tmpint32 = ntohl(tmpint32);                                               \
+  if (tmpint32 != (int32_t)NSLCD_RESULT_BEGIN)                              \
+  {                                                                         \
+    ERROR_OUT_NOSUCCESS(fp);                                                \
+  }
+
+#endif /* not COMMON__NSLCD_PROT_H */
diff --git a/contrib/slapd-modules/nssov/nss-pam-ldapd/nslcd.h b/contrib/slapd-modules/nssov/nss-pam-ldapd/nslcd.h
new file mode 100644
index 0000000..c7dc013
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nss-pam-ldapd/nslcd.h
@@ -0,0 +1,305 @@
+/*
+   nslcd.h - file describing client/server protocol
+
+   Copyright (C) 2006 West Consulting
+   Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012, 2013 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+#ifndef _NSLCD_H
+#define _NSLCD_H 1
+
+/*
+   The protocol used between the nslcd client and server is a simple binary
+   protocol. It is request/response based where the client initiates a
+   connection, does a single request and closes the connection again. Any
+   mangled or not understood messages will be silently ignored by the server.
+
+   A request looks like:
+     INT32  NSLCD_VERSION
+     INT32  NSLCD_ACTION_*
+     [request parameters if any]
+   A response looks like:
+     INT32  NSLCD_VERSION
+     INT32  NSLCD_ACTION_* (the original request type)
+     [result(s)]
+     INT32  NSLCD_RESULT_END
+   A single result entry looks like:
+     INT32  NSLCD_RESULT_BEGIN
+     [result value(s)]
+   If a response would return multiple values (e.g. for NSLCD_ACTION_*_ALL
+   functions) each return value will be preceded by a NSLCD_RESULT_BEGIN
+   value. After the last returned result the server sends
+   NSLCD_RESULT_END. If some error occurs (e.g. LDAP server unavailable,
+   error in the request, etc) the server terminates the connection to signal
+   an error condition (breaking the protocol).
+
+   These are the available basic data types:
+     INT32  - 32-bit integer value
+     TYPE   - a typed field that is transferred using sizeof()
+     STRING - a string length (32bit) followed by the string value (not
+              null-terminated) the string itself is assumed to be UTF-8
+     STRINGLIST - a 32-bit number noting the number of strings followed by
+                  the strings one at a time
+
+   Furthermore the ADDRESS compound data type is defined as:
+     INT32  type of address: e.g. AF_INET or AF_INET6
+     INT32  length of address
+     RAW    the address itself
+   With the ADDRESSLIST using the same construct as with STRINGLIST.
+
+   The protocol uses network byte order for all types.
+*/
+
+/* The current version of the protocol. This protocol should only be
+   updated with major backwards-incompatible changes. */
+#define NSLCD_VERSION 0x00000002
+
+/* Get a NSLCD configuration option. There is one request parameter:
+    INT32   NSLCD_CONFIG_*
+  the result value is:
+    STRING  value, interpretation depending on request */
+#define NSLCD_ACTION_CONFIG_GET        0x00010001
+
+/* return the message, if any, that is presented to the user when password
+   modification through PAM is prohibited */
+#define NSLCD_CONFIG_PAM_PASSWORD_PROHIBIT_MESSAGE 1
+
+/* Email alias (/etc/aliases) NSS requests. The result values for a
+   single entry are:
+     STRING      alias name
+     STRINGLIST  alias rcpts */
+#define NSLCD_ACTION_ALIAS_BYNAME      0x00020001
+#define NSLCD_ACTION_ALIAS_ALL         0x00020008
+
+/* Ethernet address/name mapping NSS requests. The result values for a
+   single entry are:
+     STRING            ether name
+     TYPE(uint8_t[6])  ether address */
+#define NSLCD_ACTION_ETHER_BYNAME      0x00030001
+#define NSLCD_ACTION_ETHER_BYETHER     0x00030002
+#define NSLCD_ACTION_ETHER_ALL         0x00030008
+
+/* Group and group membership related NSS requests. The result values
+   for a single entry are:
+     STRING       group name
+     STRING       group password
+     INT32        group id
+     STRINGLIST   members (usernames) of the group
+     (not that the BYMEMER call returns an empty members list) */
+#define NSLCD_ACTION_GROUP_BYNAME      0x00040001
+#define NSLCD_ACTION_GROUP_BYGID       0x00040002
+#define NSLCD_ACTION_GROUP_BYMEMBER    0x00040006
+#define NSLCD_ACTION_GROUP_ALL         0x00040008
+
+/* Hostname (/etc/hosts) lookup NSS requests. The result values
+   for an entry are:
+     STRING       host name
+     STRINGLIST   host aliases
+     ADDRESSLIST  host addresses */
+#define NSLCD_ACTION_HOST_BYNAME       0x00050001
+#define NSLCD_ACTION_HOST_BYADDR       0x00050002
+#define NSLCD_ACTION_HOST_ALL          0x00050008
+
+/* Netgroup NSS result entries contain a number of parts. A result entry
+   starts with:
+     STRING  netgroup name
+   followed by zero or more references to other netgroups or netgroup
+   triples. A reference to another netgroup looks like:
+     INT32   NSLCD_NETGROUP_TYPE_NETGROUP
+     STRING  other netgroup name
+   A a netgroup triple looks like:
+     INT32   NSLCD_NETGROUP_TYPE_TRIPLE
+     STRING  host
+     STRING  user
+     STRING  domain
+   A netgroup result entry is terminated by:
+     INT32   NSLCD_NETGROUP_TYPE_END
+   */
+#define NSLCD_ACTION_NETGROUP_BYNAME   0x00060001
+#define NSLCD_ACTION_NETGROUP_ALL      0x00060008
+#define NSLCD_NETGROUP_TYPE_NETGROUP 1
+#define NSLCD_NETGROUP_TYPE_TRIPLE   2
+#define NSLCD_NETGROUP_TYPE_END      3
+
+/* Network name (/etc/networks) NSS requests. Result values for a single
+   entry are:
+     STRING       network name
+     STRINGLIST   network aliases
+     ADDRESSLIST  network addresses */
+#define NSLCD_ACTION_NETWORK_BYNAME    0x00070001
+#define NSLCD_ACTION_NETWORK_BYADDR    0x00070002
+#define NSLCD_ACTION_NETWORK_ALL       0x00070008
+
+/* User account (/etc/passwd) NSS requests. Result values are:
+     STRING       user name
+     STRING       user password
+     INT32        user id
+     INT32        group id
+     STRING       gecos information
+     STRING       home directory
+     STRING       login shell */
+#define NSLCD_ACTION_PASSWD_BYNAME     0x00080001
+#define NSLCD_ACTION_PASSWD_BYUID      0x00080002
+#define NSLCD_ACTION_PASSWD_ALL        0x00080008
+
+/* Protocol information requests. Result values are:
+     STRING      protocol name
+     STRINGLIST  protocol aliases
+     INT32       protocol number */
+#define NSLCD_ACTION_PROTOCOL_BYNAME   0x00090001
+#define NSLCD_ACTION_PROTOCOL_BYNUMBER 0x00090002
+#define NSLCD_ACTION_PROTOCOL_ALL      0x00090008
+
+/* RPC information requests. Result values are:
+     STRING      rpc name
+     STRINGLIST  rpc aliases
+     INT32       rpc number */
+#define NSLCD_ACTION_RPC_BYNAME        0x000a0001
+#define NSLCD_ACTION_RPC_BYNUMBER      0x000a0002
+#define NSLCD_ACTION_RPC_ALL           0x000a0008
+
+/* Service (/etc/services) information requests. The BYNAME and BYNUMBER
+   requests contain an extra protocol string in the request which, if not
+   blank, will filter the services by this protocol. Result values are:
+     STRING      service name
+     STRINGLIST  service aliases
+     INT32       service (port) number
+     STRING      service protocol */
+#define NSLCD_ACTION_SERVICE_BYNAME    0x000b0001
+#define NSLCD_ACTION_SERVICE_BYNUMBER  0x000b0002
+#define NSLCD_ACTION_SERVICE_ALL       0x000b0008
+
+/* Extended user account (/etc/shadow) information requests. Result
+   values for a single entry are:
+     STRING  user name
+     STRING  user password
+     INT32   last password change
+     INT32   mindays
+     INT32   maxdays
+     INT32   warn
+     INT32   inact
+     INT32   expire
+     INT32   flag */
+#define NSLCD_ACTION_SHADOW_BYNAME     0x000c0001
+#define NSLCD_ACTION_SHADOW_ALL        0x000c0008
+
+/* PAM-related requests. The request parameters for all these requests
+   begin with:
+     STRING  user name
+     STRING  service name
+     STRING  ruser
+     STRING  rhost
+     STRING  tty
+   If the user is not known in LDAP no result may be returned (immediately
+   return NSLCD_RESULT_END instead of a PAM error code). */
+
+/* PAM authentication check request. The extra request values are:
+     STRING  password
+   and the result value consists of:
+     INT32   authc NSLCD_PAM_* result code
+     STRING  user name (the canonical user name)
+     INT32   authz NSLCD_PAM_* result code
+     STRING  authorisation error message
+   If the username is empty in this request an attempt is made to
+   authenticate as the administrator (set using rootpwmoddn).
+   Some authorisation checks are already done during authentication so the
+   response also includes authorisation information. */
+#define NSLCD_ACTION_PAM_AUTHC         0x000d0001
+
+/* PAM authorisation check request. The result value consists of:
+     INT32   authz NSLCD_PAM_* result code
+     STRING  authorisation error message
+   The authentication check may have already returned some authorisation
+   information. The authorisation error message, if supplied, will be used
+   by the PAM module instead of a message that is generated by the PAM
+   module itself. */
+#define NSLCD_ACTION_PAM_AUTHZ         0x000d0002
+
+/* PAM session open request. The result value consists of:
+     STRING   session id
+   This session id may be used to close this session with. */
+#define NSLCD_ACTION_PAM_SESS_O        0x000d0003
+
+/* PAM session close request. This request has the following
+   extra request value:
+     STRING   session id
+   and this calls only returns an empty response value. */
+#define NSLCD_ACTION_PAM_SESS_C        0x000d0004
+
+/* PAM password modification request. This requests has the following extra
+   request values:
+     INT32   asroot: 0=oldpasswd is user passwd, 1=oldpasswd is root passwd
+     STRING  old password
+     STRING  new password
+   and returns there extra result values:
+     INT32   NSLCD_PAM_* result code
+     STRING  error message */
+#define NSLCD_ACTION_PAM_PWMOD         0x000d0005
+
+/* User information change request. This request allows one to change
+   their full name and other information. The request parameters for this
+   request are:
+     STRING  user name
+     INT32   asroot: 0=passwd is user passwd, 1=passwd is root passwd
+     STRING  password
+   followed by one or more of the below, terminated by NSLCD_USERMOD_END
+     INT32   NSLCD_USERMOD_*
+     STRING  new value
+   the response consists of one or more of the entries below, terminated
+   by NSLCD_USERMOD_END:
+     INT32   NSLCD_USERMOD_*
+     STRING  response
+   (if the response is blank, the change went OK, otherwise the string
+   contains an error message)
+   */
+#define NSLCD_ACTION_USERMOD           0x000e0001
+
+/* These are the possible values for the NSLCD_ACTION_USERMOD operation
+   above. */
+#define NSLCD_USERMOD_END        0 /* end of change values */
+#define NSLCD_USERMOD_RESULT     1 /* global result value */
+#define NSLCD_USERMOD_FULLNAME   2 /* full name */
+#define NSLCD_USERMOD_ROOMNUMBER 3 /* room number */
+#define NSLCD_USERMOD_WORKPHONE  4 /* office phone number */
+#define NSLCD_USERMOD_HOMEPHONE  5 /* home phone number */
+#define NSLCD_USERMOD_OTHER      6 /* other info */
+#define NSLCD_USERMOD_HOMEDIR    7 /* home directory */
+#define NSLCD_USERMOD_SHELL      8 /* login shell */
+
+/* Request result codes. */
+#define NSLCD_RESULT_BEGIN 1
+#define NSLCD_RESULT_END   2
+
+/* Partial list of PAM result codes. */
+#define NSLCD_PAM_SUCCESS             0 /* everything ok */
+#define NSLCD_PAM_PERM_DENIED         6 /* Permission denied */
+#define NSLCD_PAM_AUTH_ERR            7 /* Authc failure */
+#define NSLCD_PAM_CRED_INSUFFICIENT   8 /* Cannot access authc data */
+#define NSLCD_PAM_AUTHINFO_UNAVAIL    9 /* Cannot retrieve authc info */
+#define NSLCD_PAM_USER_UNKNOWN       10 /* User not known */
+#define NSLCD_PAM_MAXTRIES           11 /* Retry limit reached */
+#define NSLCD_PAM_NEW_AUTHTOK_REQD   12 /* Password expired */
+#define NSLCD_PAM_ACCT_EXPIRED       13 /* Account expired */
+#define NSLCD_PAM_SESSION_ERR        14 /* Cannot make/remove session record */
+#define NSLCD_PAM_AUTHTOK_ERR        20 /* Authentication token manipulation error */
+#define NSLCD_PAM_AUTHTOK_DISABLE_AGING 23 /* Password aging disabled */
+#define NSLCD_PAM_IGNORE             25 /* Ignore module */
+#define NSLCD_PAM_ABORT              26 /* Fatal error */
+#define NSLCD_PAM_AUTHTOK_EXPIRED    27 /* authentication token has expired */
+
+#endif /* not _NSLCD_H */
diff --git a/contrib/slapd-modules/nssov/nss-pam-ldapd/tio.c b/contrib/slapd-modules/nssov/nss-pam-ldapd/tio.c
new file mode 100644
index 0000000..012e680
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nss-pam-ldapd/tio.c
@@ -0,0 +1,520 @@
+/*
+   tio.c - timed io functions
+   This file is part of the nss-pam-ldapd library.
+
+   Copyright (C) 2007-2014 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+#include "portable.h"
+
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif /* HAVE_STDINT_H */
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <errno.h>
+#include <string.h>
+#include <signal.h>
+#include <stdio.h>
+#include <limits.h>
+#include <poll.h>
+#include <time.h>
+
+#include "tio.h"
+
+/* for platforms that don't have ETIME use ETIMEDOUT */
+#ifndef ETIME
+#define ETIME ETIMEDOUT
+#endif /* ETIME */
+
+/* structure that holds a buffer
+   the buffer contains the data that is between the application and the
+   file descriptor that is used for efficient transfer
+   the buffer is built up as follows:
+   |.....********......|
+         ^start        ^size
+         ^--len--^           */
+struct tio_buffer {
+  uint8_t *buffer;
+  size_t size;      /* the size of the buffer */
+  size_t maxsize;   /* the maximum size of the buffer */
+  size_t start;     /* the start of the data (before start is unused) */
+  size_t len;       /* size of the data (from the start) */
+};
+
+/* structure that holds all the state for files */
+struct tio_fileinfo {
+  int fd;
+  struct tio_buffer readbuffer;
+  struct tio_buffer writebuffer;
+  int readtimeout;
+  int writetimeout;
+  int read_resettable; /* whether the tio_reset() function can be called */
+#ifdef DEBUG_TIO_STATS
+  /* this is used to collect statistics on the use of the streams
+     and can be used to tune the buffer sizes */
+  size_t byteswritten;
+  size_t bytesread;
+#endif /* DEBUG_TIO_STATS */
+};
+
+/* some older versions of Solaris don't provide CLOCK_MONOTONIC but do have
+   a CLOCK_HIGHRES that has the same properties we need */
+#ifndef CLOCK_MONOTONIC
+#ifdef CLOCK_HIGHRES
+#define CLOCK_MONOTONIC CLOCK_HIGHRES
+#endif /* CLOCK_HIGHRES */
+#endif /* not CLOCK_MONOTONIC */
+
+/* update the timeout to the value that is remaining before the deadline
+   returns the number of milliseconds before the deadline (or a negative
+   value of the deadline has expired) */
+static inline int tio_time_remaining(struct timespec *deadline, int timeout)
+{
+  struct timespec tv;
+  /* if this is the first call, set the deadline and return the full time */
+  if ((deadline->tv_sec == 0) && (deadline->tv_nsec == 0))
+  {
+    if (clock_gettime(CLOCK_MONOTONIC, deadline) == 0)
+    {
+      deadline->tv_sec += timeout / 1000;
+      deadline->tv_nsec += (timeout % 1000) * 1000000;
+    }
+    return timeout;
+  }
+  /* get the current time (fall back to full time on error) */
+  if (clock_gettime(CLOCK_MONOTONIC, &tv))
+    return timeout;
+  /* calculate time remaining in milliseconds */
+  return (deadline->tv_sec - tv.tv_sec) * 1000 +
+         (deadline->tv_nsec - tv.tv_nsec) / 1000000;
+}
+
+/* open a new TFILE based on the file descriptor */
+TFILE *tio_fdopen(int fd, int readtimeout, int writetimeout,
+                  size_t initreadsize, size_t maxreadsize,
+                  size_t initwritesize, size_t maxwritesize)
+{
+  struct tio_fileinfo *fp;
+  fp = (struct tio_fileinfo *)malloc(sizeof(struct tio_fileinfo));
+  if (fp == NULL)
+    return NULL;
+  fp->fd = fd;
+  /* initialize read buffer */
+  fp->readbuffer.buffer = (uint8_t *)malloc(initreadsize);
+  if (fp->readbuffer.buffer == NULL)
+  {
+    free(fp);
+    return NULL;
+  }
+  fp->readbuffer.size = initreadsize;
+  fp->readbuffer.maxsize = maxreadsize;
+  fp->readbuffer.start = 0;
+  fp->readbuffer.len = 0;
+  /* initialize write buffer */
+  fp->writebuffer.buffer = (uint8_t *)malloc(initwritesize);
+  if (fp->writebuffer.buffer == NULL)
+  {
+    free(fp->readbuffer.buffer);
+    free(fp);
+    return NULL;
+  }
+  fp->writebuffer.size = initwritesize;
+  fp->writebuffer.maxsize = maxwritesize;
+  fp->writebuffer.start = 0;
+  fp->writebuffer.len = 0;
+  /* initialize other attributes */
+  fp->readtimeout = readtimeout;
+  fp->writetimeout = writetimeout;
+  fp->read_resettable = 0;
+#ifdef DEBUG_TIO_STATS
+  fp->byteswritten = 0;
+  fp->bytesread = 0;
+#endif /* DEBUG_TIO_STATS */
+  return fp;
+}
+
+/* wait for any activity on the specified file descriptor using
+   the specified deadline */
+static int tio_wait(int fd, short events, int timeout,
+                    struct timespec *deadline)
+{
+  int t;
+  struct pollfd fds[1];
+  int rv;
+  while (1)
+  {
+    fds[0].fd = fd;
+    fds[0].events = events;
+    /* figure out the time we need to wait */
+    if ((t = tio_time_remaining(deadline, timeout)) < 0)
+    {
+      errno = ETIME;
+      return -1;
+    }
+    /* sanity check for moving clock */
+    if (t > timeout)
+      t = timeout;
+    /* wait for activity */
+    rv = poll(fds, 1, t);
+    if (rv > 0)
+      return 0; /* we have activity */
+    else if (rv == 0)
+    {
+      /* no file descriptors were available within the specified time */
+      errno = ETIME;
+      return -1;
+    }
+    else if ((errno != EINTR) && (errno != EAGAIN))
+      /* some error occurred */
+      return -1;
+    /* we just try again on EINTR or EAGAIN */
+  }
+}
+
+/* do a read on the file descriptor, returning the data in the buffer
+   if no data was read in the specified time an error is returned */
+int tio_read(TFILE *fp, void *buf, size_t count)
+{
+  struct timespec deadline = {0, 0};
+  int rv;
+  uint8_t *tmp;
+  size_t newsz;
+  size_t len;
+  /* have a more convenient storage type for the buffer */
+  uint8_t *ptr = (uint8_t *)buf;
+  /* loop until we have returned all the needed data */
+  while (1)
+  {
+    /* check if we have enough data in the buffer */
+    if (fp->readbuffer.len >= count)
+    {
+      if (count > 0)
+      {
+        if (ptr != NULL)
+          memcpy(ptr, fp->readbuffer.buffer + fp->readbuffer.start, count);
+        /* adjust buffer position */
+        fp->readbuffer.start += count;
+        fp->readbuffer.len -= count;
+      }
+      return 0;
+    }
+    /* empty what we have and continue from there */
+    if (fp->readbuffer.len > 0)
+    {
+      if (ptr != NULL)
+      {
+        memcpy(ptr, fp->readbuffer.buffer + fp->readbuffer.start,
+               fp->readbuffer.len);
+        ptr += fp->readbuffer.len;
+      }
+      count -= fp->readbuffer.len;
+      fp->readbuffer.start += fp->readbuffer.len;
+      fp->readbuffer.len = 0;
+    }
+    /* after this point until the read fp->readbuffer.len is 0 */
+    if (!fp->read_resettable)
+    {
+      /* the stream is not resettable, re-use the buffer */
+      fp->readbuffer.start = 0;
+    }
+    else if (fp->readbuffer.start >= (fp->readbuffer.size - 4))
+    {
+      /* buffer is running empty, try to grow buffer */
+      if (fp->readbuffer.size < fp->readbuffer.maxsize)
+      {
+        newsz = fp->readbuffer.size * 2;
+        if (newsz > fp->readbuffer.maxsize)
+          newsz = fp->readbuffer.maxsize;
+        tmp = realloc(fp->readbuffer.buffer, newsz);
+        if (tmp != NULL)
+        {
+          fp->readbuffer.buffer = tmp;
+          fp->readbuffer.size = newsz;
+        }
+      }
+      /* if buffer still does not contain enough room, clear resettable */
+      if (fp->readbuffer.start >= (fp->readbuffer.size - 4))
+      {
+        fp->readbuffer.start = 0;
+        fp->read_resettable = 0;
+      }
+    }
+    /* wait until we have input */
+    if (tio_wait(fp->fd, POLLIN, fp->readtimeout, &deadline))
+      return -1;
+    /* read the input in the buffer */
+    len = fp->readbuffer.size - fp->readbuffer.start;
+#ifdef SSIZE_MAX
+    if (len > SSIZE_MAX)
+      len = SSIZE_MAX;
+#endif /* SSIZE_MAX */
+    rv = read(fp->fd, fp->readbuffer.buffer + fp->readbuffer.start, len);
+    /* check for errors */
+    if (rv == 0)
+    {
+      errno = ECONNRESET;
+      return -1;
+    }
+    else if ((rv < 0) && (errno != EINTR) && (errno != EAGAIN))
+      return -1;        /* something went wrong with the read */
+    else if (rv > 0)
+      fp->readbuffer.len = rv;  /* skip the read part in the buffer */
+#ifdef DEBUG_TIO_STATS
+    fp->bytesread += rv;
+#endif /* DEBUG_TIO_STATS */
+  }
+}
+
+/* Read and discard the specified number of bytes from the stream. */
+int tio_skip(TFILE *fp, size_t count)
+{
+  return tio_read(fp, NULL, count);
+}
+
+/* Read all available data from the stream and empty the read buffer. */
+int tio_skipall(TFILE *fp, int timeout)
+{
+  struct timespec deadline = {0, 0};
+  int rv;
+  size_t len;
+  /* clear the read buffer */
+  fp->readbuffer.start = 0;
+  fp->readbuffer.len = 0;
+  fp->read_resettable = 0;
+  /* read until we can't read no more */
+  len = fp->readbuffer.size;
+#ifdef SSIZE_MAX
+  if (len > SSIZE_MAX)
+    len = SSIZE_MAX;
+#endif /* SSIZE_MAX */
+  while (1)
+  {
+    /* wait until we have input */
+    if (tio_wait(fp->fd, POLLIN, timeout, &deadline))
+      return -1;
+    /* read data from the stream */
+    rv = read(fp->fd, fp->readbuffer.buffer, len);
+    if (rv == 0)
+      return 0; /* end-of-file */
+    if ((rv < 0) && (errno == EWOULDBLOCK))
+      return 0; /* we've ready everything we can without blocking */
+    if ((rv < 0) && (errno != EINTR) && (errno != EAGAIN))
+      return -1; /* something went wrong with the read */
+  }
+}
+
+/* the caller has assured us that we can write to the file descriptor
+   and we give it a shot */
+static int tio_writebuf(TFILE *fp)
+{
+  int rv;
+  /* write the buffer */
+#ifdef MSG_NOSIGNAL
+  rv = send(fp->fd, fp->writebuffer.buffer + fp->writebuffer.start,
+            fp->writebuffer.len, MSG_NOSIGNAL);
+#else /* not MSG_NOSIGNAL */
+  /* on platforms that cannot use send() with masked signals, we change the
+     signal mask and change it back after the write (note that there is a
+     race condition here) */
+  struct sigaction act, oldact;
+  /* set up sigaction */
+  memset(&act, 0, sizeof(struct sigaction));
+  act.sa_sigaction = NULL;
+  act.sa_handler = SIG_IGN;
+  sigemptyset(&act.sa_mask);
+  act.sa_flags = SA_RESTART;
+  /* ignore SIGPIPE */
+  if (sigaction(SIGPIPE, &act, &oldact) != 0)
+    return -1; /* error setting signal handler */
+  /* write the buffer */
+  rv = write(fp->fd, fp->writebuffer.buffer + fp->writebuffer.start,
+             fp->writebuffer.len);
+  /* restore the old handler for SIGPIPE */
+  if (sigaction(SIGPIPE, &oldact, NULL) != 0)
+    return -1; /* error restoring signal handler */
+#endif
+  /* check for errors */
+  if ((rv == 0) || ((rv < 0) && (errno != EINTR) && (errno != EAGAIN)))
+    return -1; /* something went wrong with the write */
+  /* skip the written part in the buffer */
+  if (rv > 0)
+  {
+    fp->writebuffer.start += rv;
+    fp->writebuffer.len -= rv;
+#ifdef DEBUG_TIO_STATS
+    fp->byteswritten += rv;
+#endif /* DEBUG_TIO_STATS */
+    /* reset start if len is 0 */
+    if (fp->writebuffer.len == 0)
+      fp->writebuffer.start = 0;
+    /* move contents of the buffer to the front if it will save enough room */
+    if (fp->writebuffer.start >= (fp->writebuffer.size / 4))
+    {
+      memmove(fp->writebuffer.buffer,
+              fp->writebuffer.buffer + fp->writebuffer.start,
+              fp->writebuffer.len);
+      fp->writebuffer.start = 0;
+    }
+  }
+  return 0;
+}
+
+/* write all the data in the buffer to the stream */
+int tio_flush(TFILE *fp)
+{
+  struct timespec deadline = {0, 0};
+  /* loop until we have written our buffer */
+  while (fp->writebuffer.len > 0)
+  {
+    /* wait until we can write */
+    if (tio_wait(fp->fd, POLLOUT, fp->writetimeout, &deadline))
+      return -1;
+    /* write one block */
+    if (tio_writebuf(fp))
+      return -1;
+  }
+  return 0;
+}
+
+/* try a single write of data in the buffer if the file descriptor
+   will accept data */
+static int tio_flush_nonblock(TFILE *fp)
+{
+  struct pollfd fds[1];
+  int rv;
+  /* see if we can write without blocking */
+  fds[0].fd = fp->fd;
+  fds[0].events = POLLOUT;
+  rv = poll(fds, 1, 0);
+  /* check if any file descriptors were ready (timeout) or we were
+     interrupted */
+  if ((rv == 0) || ((rv < 0) && ((errno == EINTR) || (errno == EAGAIN))))
+    return 0;
+  /* any other errors? */
+  if (rv < 0)
+    return -1;
+  /* so file descriptor will accept writes */
+  return tio_writebuf(fp);
+}
+
+int tio_write(TFILE *fp, const void *buf, size_t count)
+{
+  size_t fr;
+  uint8_t *tmp;
+  size_t newsz;
+  const uint8_t *ptr = (const uint8_t *)buf;
+  /* keep filling the buffer until we have buffered everything */
+  while (count > 0)
+  {
+    /* figure out free size in buffer */
+    fr = fp->writebuffer.size - (fp->writebuffer.start + fp->writebuffer.len);
+    if (count <= fr)
+    {
+      /* the data fits in the buffer */
+      memcpy(fp->writebuffer.buffer + fp->writebuffer.start +
+             fp->writebuffer.len, ptr, count);
+      fp->writebuffer.len += count;
+      return 0;
+    }
+    else if (fr > 0)
+    {
+      /* fill the buffer with data that will fit */
+      memcpy(fp->writebuffer.buffer + fp->writebuffer.start +
+             fp->writebuffer.len, ptr, fr);
+      fp->writebuffer.len += fr;
+      ptr += fr;
+      count -= fr;
+    }
+    /* try to flush some of the data that is in the buffer */
+    if (tio_flush_nonblock(fp))
+      return -1;
+    /* if we have room now, try again */
+    if (fp->writebuffer.size > (fp->writebuffer.start + fp->writebuffer.len))
+      continue;
+    /* try to grow the buffer */
+    if (fp->writebuffer.size < fp->writebuffer.maxsize)
+    {
+      newsz = fp->writebuffer.size * 2;
+      if (newsz > fp->writebuffer.maxsize)
+        newsz = fp->writebuffer.maxsize;
+      tmp = realloc(fp->writebuffer.buffer, newsz);
+      if (tmp != NULL)
+      {
+        fp->writebuffer.buffer = tmp;
+        fp->writebuffer.size = newsz;
+        continue; /* try again */
+      }
+    }
+    /* write the buffer to the stream */
+    if (tio_flush(fp))
+      return -1;
+  }
+  return 0;
+}
+
+int tio_close(TFILE *fp)
+{
+  int retv;
+  /* write any buffered data */
+  retv = tio_flush(fp);
+#ifdef DEBUG_TIO_STATS
+  /* dump statistics to stderr */
+  fprintf(stderr, "DEBUG_TIO_STATS READ=%d WRITTEN=%d\n", fp->bytesread,
+          fp->byteswritten);
+#endif /* DEBUG_TIO_STATS */
+  /* close file descriptor */
+  if (close(fp->fd))
+    retv = -1;
+  /* free any allocated buffers */
+  memset(fp->readbuffer.buffer, 0, fp->readbuffer.size);
+  memset(fp->writebuffer.buffer, 0, fp->writebuffer.size);
+  free(fp->readbuffer.buffer);
+  free(fp->writebuffer.buffer);
+  /* free the tio struct itself */
+  free(fp);
+  /* return the result of the earlier operations */
+  return retv;
+}
+
+void tio_mark(TFILE *fp)
+{
+  /* move any data in the buffer to the start of the buffer */
+  if ((fp->readbuffer.start > 0) && (fp->readbuffer.len > 0))
+  {
+    memmove(fp->readbuffer.buffer,
+            fp->readbuffer.buffer + fp->readbuffer.start, fp->readbuffer.len);
+    fp->readbuffer.start = 0;
+  }
+  /* mark the stream as resettable */
+  fp->read_resettable = 1;
+}
+
+int tio_reset(TFILE *fp)
+{
+  /* check if the stream is (still) resettable */
+  if (!fp->read_resettable)
+    return -1;
+  /* reset the buffer */
+  fp->readbuffer.len += fp->readbuffer.start;
+  fp->readbuffer.start = 0;
+  return 0;
+}
diff --git a/contrib/slapd-modules/nssov/nss-pam-ldapd/tio.h b/contrib/slapd-modules/nssov/nss-pam-ldapd/tio.h
new file mode 100644
index 0000000..95f9812
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nss-pam-ldapd/tio.h
@@ -0,0 +1,83 @@
+/*
+   tio.h - timed io functions
+   This file is part of the nss-pam-ldapd library.
+
+   Copyright (C) 2007, 2008, 2010, 2012, 2013 Arthur de Jong
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301 USA
+*/
+
+/*
+
+   TODO: Add some documentation here.
+
+   the SIGPIPE signal should be ignored (is ignored in this code)
+
+   This library is not thread safe. You cannot share TFILE objects between
+   threads and expect to be able to read and write from them in different
+   threads. All the state is in the TFILE object so calls to this library on
+   different objects can be done in parallel.
+
+*/
+
+#ifndef COMMON__TIO_H
+#define COMMON__TIO_H
+
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include "attrs.h"
+
+/* This is a generic file handle used for reading and writing
+   (something like FILE from stdio.h). */
+typedef struct tio_fileinfo TFILE;
+
+/* Open a new TFILE based on the file descriptor. The timeout is set for any
+   operation (value in milliseconds). */
+TFILE *tio_fdopen(int fd, int readtimeout, int writetimeout,
+                  size_t initreadsize, size_t maxreadsize,
+                  size_t initwritesize, size_t maxwritesize)
+  LIKE_MALLOC MUST_USE;
+
+/* Read the specified number of bytes from the stream. */
+int tio_read(TFILE *fp, void *buf, size_t count);
+
+/* Read and discard the specified number of bytes from the stream. */
+int tio_skip(TFILE *fp, size_t count);
+
+/* Read all available data from the stream and empty the read buffer. */
+int tio_skipall(TFILE *fp, int timeout);
+
+/* Write the specified buffer to the stream. */
+int tio_write(TFILE *fp, const void *buf, size_t count);
+
+/* Write out all buffered data to the stream. */
+int tio_flush(TFILE *fp);
+
+/* Flush the streams and closes the underlying file descriptor. */
+int tio_close(TFILE *fp);
+
+/* Store the current position in the stream so that we can jump back to it
+   with the tio_reset() function. */
+void tio_mark(TFILE *fp);
+
+/* Rewinds the stream to the point set by tio_mark(). Note that this only
+   resets the read stream and not the write stream. This function returns
+   whether the reset was successful (this function may fail if the buffers
+   were full). */
+int tio_reset(TFILE *fp);
+
+#endif /* COMMON__TIO_H */
diff --git a/contrib/slapd-modules/nssov/nssov.c b/contrib/slapd-modules/nssov/nssov.c
new file mode 100644
index 0000000..c8e4187
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nssov.c
@@ -0,0 +1,1045 @@
+/* nssov.c - nss-ldap overlay for slapd */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * Portions Copyright 2013 by Ted C. Cheng, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+#ifndef SLAPD_OVER_NSSOV
+#define SLAPD_OVER_NSSOV SLAPD_MOD_DYNAMIC
+#endif
+
+#include "slap-config.h"
+
+#include "lutil.h"
+
+#include <ac/errno.h>
+#include <ac/unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+AttributeDescription *nssov_pam_host_ad;
+AttributeDescription *nssov_pam_svc_ad;
+
+/* buffer sizes for I/O */
+#define READBUFFER_MINSIZE 32
+#define READBUFFER_MAXSIZE 64
+#define WRITEBUFFER_MINSIZE 64
+#define WRITEBUFFER_MAXSIZE 64*1024
+
+/* Find the given attribute's value in the RDN of the DN */
+void nssov_find_rdnval(struct berval *dn, AttributeDescription *ad, struct berval *value)
+{
+	struct berval rdn;
+	char *next;
+
+	BER_BVZERO(value);
+	dnRdn( dn, &rdn );
+	do {
+		next = ber_bvchr( &rdn, '+' );
+		if ( rdn.bv_val[ad->ad_cname.bv_len] == '=' &&
+			!ber_bvcmp( &rdn, &ad->ad_cname )) {
+			if ( next )
+				rdn.bv_len = next - rdn.bv_val;
+			value->bv_val = rdn.bv_val + ad->ad_cname.bv_len + 1;
+			value->bv_len = rdn.bv_len - ad->ad_cname.bv_len - 1;
+			break;
+		}
+		if ( !next )
+			break;
+		next++;
+		rdn.bv_len -= next - rdn.bv_val;
+		rdn.bv_val = next;
+	} while (1);
+}
+
+/* create a search filter using a name that requires escaping */
+int nssov_filter_byname(nssov_mapinfo *mi,int key,struct berval *name,struct berval *buf)
+{
+	char buf2[1024];
+	struct berval bv2 = {sizeof(buf2),buf2};
+
+	/* escape attribute */
+	if (nssov_escape(name,&bv2))
+		return -1;
+	/* build filter */
+	if (bv2.bv_len + mi->mi_filter.bv_len + mi->mi_attrs[key].an_desc->ad_cname.bv_len + 6 >
+		buf->bv_len )
+		return -1;
+	buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
+		mi->mi_filter.bv_val, mi->mi_attrs[key].an_desc->ad_cname.bv_val,
+		bv2.bv_val );
+	return 0;
+}
+
+/* create a search filter using a string converted from an int */
+int nssov_filter_byid(nssov_mapinfo *mi,int key,struct berval *id,struct berval *buf)
+{
+	/* build filter */
+	if (id->bv_len + mi->mi_filter.bv_len + mi->mi_attrs[key].an_desc->ad_cname.bv_len + 6 >
+		buf->bv_len )
+		return -1;
+	buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
+		mi->mi_filter.bv_val, mi->mi_attrs[key].an_desc->ad_cname.bv_val,
+		id->bv_val );
+	return 0;
+}
+
+void get_userpassword(struct berval *attr,struct berval *pw)
+{
+	int i;
+	/* go over the entries and return the remainder of the value if it
+		 starts with {crypt} or crypt$ */
+	for (i=0;!BER_BVISNULL(&attr[i]);i++)
+	{
+		if (strncasecmp(attr[i].bv_val,"{crypt}",7)==0) {
+			pw->bv_val = attr[i].bv_val + 7;
+			pw->bv_len = attr[i].bv_len - 7;
+			return;
+		}
+		if (strncasecmp(attr[i].bv_val,"crypt$",6)==0) {
+			pw->bv_val = attr[i].bv_val + 6;
+			pw->bv_len = attr[i].bv_len - 6;
+			return;
+		}
+	}
+	/* just return the first value completely */
+	*pw = *attr;
+	/* TODO: support more password formats e.g. SMD5
+		(which is $1$ but in a different format)
+		(any code for this is more than welcome) */
+}
+
+/* this writes a single address to the stream */
+int write_address(TFILE *fp,struct berval *addr)
+{
+	int32_t tmpint32;
+	struct in_addr ipv4addr;
+	struct in6_addr ipv6addr;
+	/* try to parse the address as IPv4 first, fall back to IPv6 */
+	if (inet_pton(AF_INET,addr->bv_val,&ipv4addr)>0)
+	{
+		/* write address type */
+		WRITE_INT32(fp,AF_INET);
+		/* write the address length */
+		WRITE_INT32(fp,sizeof(struct in_addr));
+		/* write the address itself (in network byte order) */
+		WRITE(fp,&ipv4addr,sizeof(struct in_addr));
+	}
+	else if (inet_pton(AF_INET6,addr->bv_val,&ipv6addr)>0)
+	{
+		/* write address type */
+		WRITE_INT32(fp,AF_INET6);
+		/* write the address length */
+		WRITE_INT32(fp,sizeof(struct in6_addr));
+		/* write the address itself (in network byte order) */
+		WRITE(fp,&ipv6addr,sizeof(struct in6_addr));
+	}
+	else
+	{
+		/* failure, log but write simple invalid address
+			 (otherwise the address list is messed up) */
+		/* TODO: have error message in correct format */
+		Debug(LDAP_DEBUG_ANY,"nssov: unparsable address: %s\n",addr->bv_val );
+		/* write an illegal address type */
+		WRITE_INT32(fp,-1);
+		/* write an empty address */
+		WRITE_INT32(fp,0);
+	}
+	/* we're done */
+	return 0;
+}
+
+int read_address(TFILE *fp,char *addr,int *addrlen,int *af)
+{
+	int32_t tmpint32;
+	int len;
+	/* read address family */
+	READ_INT32(fp,*af);
+	if ((*af!=AF_INET)&&(*af!=AF_INET6))
+	{
+		Debug(LDAP_DEBUG_ANY,"nssov: incorrect address family specified: %d\n",*af );
+		return -1;
+	}
+	/* read address length */
+	READ_INT32(fp,len);
+	if ((len>*addrlen)||(len<=0))
+	{
+		Debug(LDAP_DEBUG_ANY,"nssov: address length incorrect: %d\n",len );
+		return -1;
+	}
+	*addrlen=len;
+	/* read address */
+	READ(fp,addr,len);
+	/* we're done */
+	return 0;
+}
+
+int nssov_escape(struct berval *src,struct berval *dst)
+{
+	size_t pos=0;
+	int i;
+	/* go over all characters in source string */
+	for (i=0;i<src->bv_len;i++)
+	{
+		/* check if char will fit */
+		if (pos>=(dst->bv_len-4))
+			return -1;
+		/* do escaping for some characters */
+		switch (src->bv_val[i])
+		{
+			case '*':
+				strcpy(dst->bv_val+pos,"\\2a");
+				pos+=3;
+				break;
+			case '(':
+				strcpy(dst->bv_val+pos,"\\28");
+				pos+=3;
+				break;
+			case ')':
+				strcpy(dst->bv_val+pos,"\\29");
+				pos+=3;
+				break;
+			case '\\':
+				strcpy(dst->bv_val+pos,"\\5c");
+				pos+=3;
+				break;
+			default:
+				/* just copy character */
+				dst->bv_val[pos++]=src->bv_val[i];
+				break;
+		}
+	}
+	/* terminate destination string */
+	dst->bv_val[pos]='\0';
+	dst->bv_len = pos;
+	return 0;
+}
+
+/* read the version information and action from the stream
+   this function returns the read action in location pointer to by action */
+static int read_header(TFILE *fp,int32_t *action)
+{
+  int32_t tmpint32;
+  /* read the protocol version */
+  READ_INT32(fp,tmpint32);
+  if (tmpint32 != (int32_t)NSLCD_VERSION)
+  {
+    Debug( LDAP_DEBUG_TRACE,"nssov: wrong nslcd version id (%d)\n",(int)tmpint32 );
+    return -1;
+  }
+  /* read the request type */
+  READ_INT32(fp,*action);
+  return 0;
+}
+
+int nssov_config(nssov_info *ni,TFILE *fp,Operation *op)
+{
+	int opt;
+	int32_t tmpint32;
+
+	READ_INT32(fp,opt);
+
+	Debug(LDAP_DEBUG_TRACE, "nssov_config (%d)\n",opt );
+
+	WRITE_INT32(fp,NSLCD_VERSION);
+	WRITE_INT32(fp,NSLCD_ACTION_CONFIG_GET);
+	WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
+
+	switch (opt) {
+	case NSLCD_CONFIG_PAM_PASSWORD_PROHIBIT_MESSAGE:
+		/* request for pam password_prohibit_message */
+		/* nssov_pam prohibits password  */
+		if (!BER_BVISEMPTY(&ni->ni_pam_password_prohibit_message)) {
+			Debug(LDAP_DEBUG_TRACE,"nssov_config(): %s (%s)\n",
+				"password_prohibit_message",
+				ni->ni_pam_password_prohibit_message.bv_val );
+			WRITE_STRING(fp,ni->ni_pam_password_prohibit_message.bv_val);
+		}
+	default:
+		/* all other config options are ignored */
+		break;
+	}
+
+	WRITE_INT32(fp,NSLCD_RESULT_END);
+	return 0;
+}
+
+
+/* read a request message, returns <0 in case of errors,
+   this function closes the socket */
+static void handleconnection(nssov_info *ni,int sock,Operation *op)
+{
+  TFILE *fp;
+  int32_t action;
+  int readtimeout,writetimeout;
+  uid_t uid;
+  gid_t gid;
+  char authid[sizeof("gidNumber=4294967295+uidNumber=424967295,cn=peercred,cn=external,cn=auth")];
+  char peerbuf[8];
+  struct berval peerbv = { sizeof(peerbuf), peerbuf };
+
+  /* log connection */
+  if (LUTIL_GETPEEREID(sock,&uid,&gid,&peerbv)) {
+    char ebuf[128];
+    int saved_errno = errno;
+    Debug( LDAP_DEBUG_TRACE,"nssov: connection from unknown client: %s\n",
+                      AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+  } else {
+    Debug( LDAP_DEBUG_TRACE,"nssov: connection from uid=%d gid=%d\n",
+                      (int)uid,(int)gid );
+  }
+
+  /* Should do authid mapping too */
+  op->o_dn.bv_len = sprintf(authid,"gidNumber=%d+uidNumber=%d,cn=peercred,cn=external,cn=auth",
+	(int)gid, (int)uid );
+  op->o_dn.bv_val = authid;
+  op->o_ndn = op->o_dn;
+
+  /* set the timeouts:
+   * read timeout is half a second because clients should send their request
+   * quickly, write timeout is 60 seconds because clients could be taking some
+   * time to process the results
+   */
+  readtimeout = 500;
+  writetimeout = 60000;
+  /* create a stream object */
+  if ((fp=tio_fdopen(sock,readtimeout,writetimeout,
+                     READBUFFER_MINSIZE,READBUFFER_MAXSIZE,
+                     WRITEBUFFER_MINSIZE,WRITEBUFFER_MAXSIZE))==NULL)
+  {
+    char ebuf[128];
+    int saved_errno = errno;
+    Debug( LDAP_DEBUG_ANY,"nssov: cannot create stream for writing: %s",
+                      AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+    (void)close(sock);
+    return;
+  }
+  /* read request */
+  if (read_header(fp,&action))
+  {
+    (void)tio_close(fp);
+    return;
+  }
+  /* handle request */
+  switch (action)
+  {
+    case NSLCD_ACTION_ALIAS_BYNAME:     (void)nssov_alias_byname(ni,fp,op); break;
+    case NSLCD_ACTION_ALIAS_ALL:        (void)nssov_alias_all(ni,fp,op); break;
+    case NSLCD_ACTION_ETHER_BYNAME:     (void)nssov_ether_byname(ni,fp,op); break;
+    case NSLCD_ACTION_ETHER_BYETHER:    (void)nssov_ether_byether(ni,fp,op); break;
+    case NSLCD_ACTION_ETHER_ALL:        (void)nssov_ether_all(ni,fp,op); break;
+    case NSLCD_ACTION_GROUP_BYNAME:     (void)nssov_group_byname(ni,fp,op); break;
+    case NSLCD_ACTION_GROUP_BYGID:      (void)nssov_group_bygid(ni,fp,op); break;
+    case NSLCD_ACTION_GROUP_BYMEMBER:   (void)nssov_group_bymember(ni,fp,op); break;
+    case NSLCD_ACTION_GROUP_ALL:        (void)nssov_group_all(ni,fp,op); break;
+    case NSLCD_ACTION_HOST_BYNAME:      (void)nssov_host_byname(ni,fp,op); break;
+    case NSLCD_ACTION_HOST_BYADDR:      (void)nssov_host_byaddr(ni,fp,op); break;
+    case NSLCD_ACTION_HOST_ALL:         (void)nssov_host_all(ni,fp,op); break;
+    case NSLCD_ACTION_NETGROUP_BYNAME:  (void)nssov_netgroup_byname(ni,fp,op); break;
+    case NSLCD_ACTION_NETWORK_BYNAME:   (void)nssov_network_byname(ni,fp,op); break;
+    case NSLCD_ACTION_NETWORK_BYADDR:   (void)nssov_network_byaddr(ni,fp,op); break;
+    case NSLCD_ACTION_NETWORK_ALL:      (void)nssov_network_all(ni,fp,op); break;
+    case NSLCD_ACTION_PASSWD_BYNAME:    (void)nssov_passwd_byname(ni,fp,op); break;
+    case NSLCD_ACTION_PASSWD_BYUID:     (void)nssov_passwd_byuid(ni,fp,op); break;
+    case NSLCD_ACTION_PASSWD_ALL:       (void)nssov_passwd_all(ni,fp,op); break;
+    case NSLCD_ACTION_PROTOCOL_BYNAME:  (void)nssov_protocol_byname(ni,fp,op); break;
+    case NSLCD_ACTION_PROTOCOL_BYNUMBER:(void)nssov_protocol_bynumber(ni,fp,op); break;
+    case NSLCD_ACTION_PROTOCOL_ALL:     (void)nssov_protocol_all(ni,fp,op); break;
+    case NSLCD_ACTION_RPC_BYNAME:       (void)nssov_rpc_byname(ni,fp,op); break;
+    case NSLCD_ACTION_RPC_BYNUMBER:     (void)nssov_rpc_bynumber(ni,fp,op); break;
+    case NSLCD_ACTION_RPC_ALL:          (void)nssov_rpc_all(ni,fp,op); break;
+    case NSLCD_ACTION_SERVICE_BYNAME:   (void)nssov_service_byname(ni,fp,op); break;
+    case NSLCD_ACTION_SERVICE_BYNUMBER: (void)nssov_service_bynumber(ni,fp,op); break;
+    case NSLCD_ACTION_SERVICE_ALL:      (void)nssov_service_all(ni,fp,op); break;
+    case NSLCD_ACTION_SHADOW_BYNAME:    if (uid==0) (void)nssov_shadow_byname(ni,fp,op); break;
+    case NSLCD_ACTION_SHADOW_ALL:       if (uid==0) (void)nssov_shadow_all(ni,fp,op); break;
+	case NSLCD_ACTION_PAM_AUTHC:		(void)pam_authc(ni,fp,op,uid); break;
+	case NSLCD_ACTION_PAM_AUTHZ:		(void)pam_authz(ni,fp,op); break;
+	case NSLCD_ACTION_PAM_SESS_O:		if (uid==0) (void)pam_sess_o(ni,fp,op); break;
+	case NSLCD_ACTION_PAM_SESS_C:		if (uid==0) (void)pam_sess_c(ni,fp,op); break;
+	case NSLCD_ACTION_PAM_PWMOD:		(void)pam_pwmod(ni,fp,op,uid); break;
+	case NSLCD_ACTION_CONFIG_GET:			(void)nssov_config(ni,fp,op); break;
+    default:
+      Debug( LDAP_DEBUG_ANY,"nssov: invalid request id: %d",(int)action );
+      break;
+  }
+  /* we're done with the request */
+  (void)tio_close(fp);
+  return;
+}
+
+/* accept a connection on the socket */
+static void *acceptconn(void *ctx, void *arg)
+{
+	nssov_info *ni = arg;
+	Connection conn = {0};
+	OperationBuffer opbuf;
+	Operation *op;
+	int csock;
+
+	if ( slapd_shutdown )
+		return NULL;
+
+	{
+		struct sockaddr_storage addr;
+		socklen_t alen;
+		int j;
+
+		/* accept a new connection */
+		alen=(socklen_t)sizeof(struct sockaddr_storage);
+		csock=accept(ni->ni_socket,(struct sockaddr *)&addr,&alen);
+		connection_client_enable(ni->ni_conn);
+		if (csock<0)
+		{
+			char ebuf[128];
+			int saved_errno = errno;
+			if ((errno==EINTR)||(errno==EAGAIN)||(errno==EWOULDBLOCK))
+			{
+				Debug( LDAP_DEBUG_TRACE,"nssov: accept() failed (ignored): %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+				return NULL;
+			}
+			Debug( LDAP_DEBUG_ANY,"nssov: accept() failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			return NULL;
+		}
+		/* make sure O_NONBLOCK is not inherited */
+		if ((j=fcntl(csock,F_GETFL,0))<0)
+		{
+			char ebuf[128];
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_GETFL) failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			if (close(csock)) {
+				saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			return NULL;
+		}
+		if (fcntl(csock,F_SETFL,j&~O_NONBLOCK)<0)
+		{
+			char ebuf[128];
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_SETFL,~O_NONBLOCK) failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			if (close(csock)) {
+				saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			return NULL;
+		}
+	}
+	connection_fake_init( &conn, &opbuf, ctx );
+	op=&opbuf.ob_op;
+	conn.c_ssf = conn.c_transport_ssf = local_ssf;
+	op->o_bd = ni->ni_db;
+	op->o_tag = LDAP_REQ_SEARCH;
+
+	/* handle the connection */
+	handleconnection(ni,csock,op);
+
+	return NULL;
+}
+
+static slap_verbmasks nss_svcs[] = {
+	{ BER_BVC("aliases"), NM_alias },
+	{ BER_BVC("ethers"), NM_ether },
+	{ BER_BVC("group"), NM_group },
+	{ BER_BVC("hosts"), NM_host },
+	{ BER_BVC("netgroup"), NM_netgroup },
+	{ BER_BVC("networks"), NM_network },
+	{ BER_BVC("passwd"), NM_passwd },
+	{ BER_BVC("protocols"), NM_protocol },
+	{ BER_BVC("rpc"), NM_rpc },
+	{ BER_BVC("services"), NM_service },
+	{ BER_BVC("shadow"), NM_shadow },
+	{ BER_BVNULL, 0 }
+};
+
+static slap_verbmasks pam_opts[] = {
+	{ BER_BVC("userhost"), NI_PAM_USERHOST },
+	{ BER_BVC("userservice"), NI_PAM_USERSVC },
+	{ BER_BVC("usergroup"), NI_PAM_USERGRP },
+	{ BER_BVC("hostservice"), NI_PAM_HOSTSVC },
+	{ BER_BVC("authz2dn"), NI_PAM_SASL2DN },
+	{ BER_BVC("uid2dn"), NI_PAM_UID2DN },
+	{ BER_BVNULL, 0 }
+};
+
+enum {
+	NSS_SSD=1,
+	NSS_MAP,
+	NSS_PAM,
+	NSS_PAMGROUP,
+	NSS_PAMSESS
+};
+
+static ConfigDriver nss_cf_gen;
+
+static ConfigTable nsscfg[] = {
+	{ "nssov-ssd", "service> <url", 3, 3, 0, ARG_MAGIC|NSS_SSD,
+		nss_cf_gen, "(OLcfgCtAt:3.1 NAME 'olcNssSsd' "
+			"DESC 'URL for searches in a given service' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ "nssov-map", "service> <orig> <new", 4, 4, 0, ARG_MAGIC|NSS_MAP,
+		nss_cf_gen, "(OLcfgCtAt:3.2 NAME 'olcNssMap' "
+			"DESC 'Map <service> lookups of <orig> attr to <new> attr' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ "nssov-pam", "options", 2, 0, 0, ARG_MAGIC|NSS_PAM,
+		nss_cf_gen, "(OLcfgCtAt:3.3 NAME 'olcNssPam' "
+			"DESC 'PAM authentication and authorization options' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ "nssov-pam-defhost", "hostname", 2, 2, 0, ARG_OFFSET|ARG_BERVAL,
+		(void *)offsetof(struct nssov_info, ni_pam_defhost),
+		"(OLcfgCtAt:3.4 NAME 'olcNssPamDefHost' "
+			"DESC 'Default hostname for service checks' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-group-dn", "DN", 2, 2, 0, ARG_MAGIC|ARG_DN|NSS_PAMGROUP,
+		nss_cf_gen, "(OLcfgCtAt:3.5 NAME 'olcNssPamGroupDN' "
+			"DESC 'DN of group in which membership is required' "
+			"EQUALITY distinguishedNameMatch "
+			"SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-group-ad", "attr", 2, 2, 0, ARG_OFFSET|ARG_ATDESC,
+		(void *)offsetof(struct nssov_info, ni_pam_group_ad),
+		"(OLcfgCtAt:3.6 NAME 'olcNssPamGroupAD' "
+			"DESC 'Member attribute to use for group check' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-min-uid", "uid", 2, 2, 0, ARG_OFFSET|ARG_INT,
+		(void *)offsetof(struct nssov_info, ni_pam_min_uid),
+		"(OLcfgCtAt:3.7 NAME 'olcNssPamMinUid' "
+			"DESC 'Minimum UID allowed to login' "
+			"EQUALITY integerMatch "
+			"SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-max-uid", "uid", 2, 2, 0, ARG_OFFSET|ARG_INT,
+		(void *)offsetof(struct nssov_info, ni_pam_max_uid),
+		"(OLcfgCtAt:3.8 NAME 'olcNssPamMaxUid' "
+			"DESC 'Maximum UID allowed to login' "
+			"EQUALITY integerMatch "
+			"SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-template-ad", "attr", 2, 2, 0, ARG_OFFSET|ARG_ATDESC,
+		(void *)offsetof(struct nssov_info, ni_pam_template_ad),
+		"(OLcfgCtAt:3.9 NAME 'olcNssPamTemplateAD' "
+			"DESC 'Attribute to use for template login name' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-template", "name", 2, 2, 0, ARG_OFFSET|ARG_BERVAL,
+		(void *)offsetof(struct nssov_info, ni_pam_template),
+		"(OLcfgCtAt:3.10 NAME 'olcNssPamTemplate' "
+			"DESC 'Default template login name' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-session", "service", 2, 2, 0, ARG_MAGIC|NSS_PAMSESS,
+		nss_cf_gen, "(OLcfgCtAt:3.11 NAME 'olcNssPamSession' "
+			"DESC 'Services for which sessions will be recorded' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ "nssov-pam-password-prohibit-message",
+		"password_prohibit_message", 2, 2, 0,
+		ARG_OFFSET|ARG_BERVAL,
+		(void *)offsetof(struct nssov_info, ni_pam_password_prohibit_message),
+		"(OLcfgCtAt:3.12 NAME 'olcNssPamPwdProhibitMsg' "
+			"DESC 'Prohibit password modification message' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-pwdmgr-dn",
+		"pwdmgr_dn", 2, 2, 0,
+		ARG_OFFSET|ARG_BERVAL,
+		(void *)offsetof(struct nssov_info, ni_pam_pwdmgr_dn),
+		"(OLcfgCtAt:3.13 NAME 'olcPamPwdmgrDn' "
+			"DESC 'Password Manager DN' "
+			"EQUALITY distinguishedNameMatch "
+			"SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
+	{ "nssov-pam-pwdmgr-pwd",
+		"pwdmgr_pwd", 2, 2, 0,
+		ARG_OFFSET|ARG_BERVAL,
+		(void *)offsetof(struct nssov_info, ni_pam_pwdmgr_pwd),
+		"(OLcfgCtAt:3.14 NAME 'olcPamPwdmgrPwd' "
+			"DESC 'Password Manager Pwd' "
+			"EQUALITY octetStringMatch "
+			"SYNTAX OMsOctetString SINGLE-VALUE )", NULL, NULL },
+	{ NULL, NULL, 0,0,0, ARG_IGNORED }
+};
+
+static ConfigOCs nssocs[] = {
+	{ "( OLcfgCtOc:3.1 "
+		"NAME 'olcNssOvConfig' "
+		"DESC 'NSS lookup configuration' "
+		"SUP olcOverlayConfig "
+		"MAY ( olcNssSsd $ olcNssMap $ olcNssPam $ olcNssPamDefHost $ "
+			"olcNssPamGroupDN $ olcNssPamGroupAD $ "
+			"olcNssPamMinUid $ olcNssPamMaxUid $ olcNssPamSession $ "
+			"olcNssPamTemplateAD $ olcNssPamTemplate ) )",
+		Cft_Overlay, nsscfg },
+	{ NULL, 0, NULL }
+};
+
+static int
+nss_cf_gen(ConfigArgs *c)
+{
+	slap_overinst *on = (slap_overinst *)c->bi;
+	nssov_info *ni = on->on_bi.bi_private;
+	nssov_mapinfo *mi;
+	int i, j, rc = 0;
+	slap_mask_t m;
+
+	if ( c->op == SLAP_CONFIG_EMIT ) {
+		switch(c->type) {
+		case NSS_SSD:
+			rc = 1;
+			for (i=NM_alias;i<NM_NONE;i++) {
+				struct berval scope;
+				struct berval ssd;
+				struct berval base;
+
+				mi = &ni->ni_maps[i];
+
+				/* ignore all-default services */
+				if ( mi->mi_scope == LDAP_SCOPE_DEFAULT &&
+					bvmatch( &mi->mi_filter, &mi->mi_filter0 ) &&
+					BER_BVISNULL( &mi->mi_base ))
+					continue;
+
+				if ( BER_BVISNULL( &mi->mi_base ))
+					base = ni->ni_db->be_nsuffix[0];
+				else
+					base = mi->mi_base;
+				ldap_pvt_scope2bv(mi->mi_scope == LDAP_SCOPE_DEFAULT ?
+					LDAP_SCOPE_SUBTREE : mi->mi_scope, &scope);
+				ssd.bv_len = STRLENOF(" ldap:///???") + nss_svcs[i].word.bv_len +
+					base.bv_len + scope.bv_len + mi->mi_filter.bv_len;
+				ssd.bv_val = ch_malloc( ssd.bv_len + 1 );
+				sprintf(ssd.bv_val, "%s ldap:///%s??%s?%s", nss_svcs[i].word.bv_val,
+					base.bv_val, scope.bv_val, mi->mi_filter.bv_val );
+				ber_bvarray_add( &c->rvalue_vals, &ssd );
+				rc = 0;
+			}
+			break;
+		case NSS_MAP:
+			rc = 1;
+			for (i=NM_alias;i<NM_NONE;i++) {
+
+				mi = &ni->ni_maps[i];
+				for (j=0;!BER_BVISNULL(&mi->mi_attrkeys[j]);j++) {
+					if ( ber_bvstrcasecmp(&mi->mi_attrkeys[j],
+						&mi->mi_attrs[j].an_name)) {
+						struct berval map;
+
+						map.bv_len = nss_svcs[i].word.bv_len +
+							mi->mi_attrkeys[j].bv_len +
+							mi->mi_attrs[j].an_desc->ad_cname.bv_len + 2;
+						map.bv_val = ch_malloc(map.bv_len + 1);
+						sprintf(map.bv_val, "%s %s %s", nss_svcs[i].word.bv_val,
+							mi->mi_attrkeys[j].bv_val, mi->mi_attrs[j].an_desc->ad_cname.bv_val );
+						ber_bvarray_add( &c->rvalue_vals, &map );
+						rc = 0;
+					}
+				}
+			}
+			break;
+		case NSS_PAM:
+			rc = mask_to_verbs( pam_opts, ni->ni_pam_opts, &c->rvalue_vals );
+			break;
+		case NSS_PAMGROUP:
+			if (!BER_BVISEMPTY( &ni->ni_pam_group_dn )) {
+				value_add_one( &c->rvalue_vals, &ni->ni_pam_group_dn );
+				value_add_one( &c->rvalue_nvals, &ni->ni_pam_group_dn );
+			} else {
+				rc = 1;
+			}
+			break;
+		case NSS_PAMSESS:
+			if (ni->ni_pam_sessions) {
+				ber_bvarray_dup_x( &c->rvalue_vals, ni->ni_pam_sessions, NULL );
+			} else {
+				rc = 1;
+			}
+			break;
+		}
+		return rc;
+	} else if ( c->op == LDAP_MOD_DELETE ) {
+		/* FIXME */
+		return 1;
+	}
+	switch( c->type ) {
+	case NSS_SSD: {
+		LDAPURLDesc *lud;
+
+		i = verb_to_mask(c->argv[1], nss_svcs);
+		if ( i == NM_NONE )
+			return 1;
+
+		mi = &ni->ni_maps[i];
+		rc = ldap_url_parse(c->argv[2], &lud);
+		if ( rc )
+			return 1;
+		do {
+			struct berval base;
+			/* Must be LDAP scheme */
+			if (strcasecmp(lud->lud_scheme,"ldap")) {
+				rc = 1;
+				break;
+			}
+			/* Host part, attrs, and extensions must be empty */
+			if (( lud->lud_host && *lud->lud_host ) ||
+				lud->lud_attrs || lud->lud_exts ) {
+				rc = 1;
+				break;
+			}
+			ber_str2bv( lud->lud_dn,0,0,&base);
+			rc = dnNormalize( 0,NULL,NULL,&base,&mi->mi_base,NULL);
+			if ( rc )
+				break;
+			if ( lud->lud_filter ) {
+				/* steal this */
+				ber_str2bv( lud->lud_filter,0,0,&mi->mi_filter);
+				lud->lud_filter = NULL;
+			}
+			mi->mi_scope = lud->lud_scope;
+		} while(0);
+		ldap_free_urldesc( lud );
+		}
+		break;
+	case NSS_MAP:
+		i = verb_to_mask(c->argv[1], nss_svcs);
+		if ( i == NM_NONE )
+			return 1;
+		rc = 1;
+		mi = &ni->ni_maps[i];
+		for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
+			if (!strcasecmp(c->argv[2],mi->mi_attrkeys[j].bv_val)) {
+				AttributeDescription *ad = NULL;
+				const char *text;
+				rc = slap_str2ad( c->argv[3], &ad, &text);
+				if ( rc == 0 ) {
+					mi->mi_attrs[j].an_desc = ad;
+					mi->mi_attrs[j].an_name = ad->ad_cname;
+				}
+				break;
+			}
+		}
+		break;
+	case NSS_PAM:
+		m = ni->ni_pam_opts;
+		i = verbs_to_mask(c->argc, c->argv, pam_opts, &m);
+		if (i == 0) {
+			ni->ni_pam_opts = m;
+			if ((m & NI_PAM_USERHOST) && !nssov_pam_host_ad) {
+				const char *text;
+				i = slap_str2ad("host", &nssov_pam_host_ad, &text);
+				if (i != LDAP_SUCCESS) {
+					snprintf(c->cr_msg, sizeof(c->cr_msg),
+						"nssov: host attr unknown: %s", text);
+					Debug(LDAP_DEBUG_ANY,"%s\n",c->cr_msg );
+					rc = 1;
+					break;
+				}
+			}
+			if ((m & (NI_PAM_USERSVC|NI_PAM_HOSTSVC)) && !nssov_pam_svc_ad) {
+				const char *text;
+				i = slap_str2ad("authorizedService", &nssov_pam_svc_ad, &text);
+				if (i != LDAP_SUCCESS) {
+					snprintf(c->cr_msg, sizeof(c->cr_msg),
+						"nssov: authorizedService attr unknown: %s", text);
+					Debug(LDAP_DEBUG_ANY,"%s\n",c->cr_msg );
+					rc = 1;
+					break;
+				}
+			}
+		} else {
+			rc = 1;
+		}
+		break;
+	case NSS_PAMGROUP:
+		ni->ni_pam_group_dn = c->value_ndn;
+		ch_free( c->value_dn.bv_val );
+		break;
+	case NSS_PAMSESS:
+		ber_str2bv( c->argv[1], 0, 1, &c->value_bv );
+		ber_bvarray_add( &ni->ni_pam_sessions, &c->value_bv );
+		break;
+	}
+	return rc;
+}
+
+static int
+nssov_db_init(
+	BackendDB *be,
+	ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	nssov_info *ni;
+	int rc;
+
+	rc = nssov_pam_init();
+	if (rc) return rc;
+
+	ni = ch_calloc( 1, sizeof(nssov_info) );
+	on->on_bi.bi_private = ni;
+
+	/* set up map keys */
+	nssov_alias_init(ni);
+	nssov_ether_init(ni);
+	nssov_group_init(ni);
+	nssov_host_init(ni);
+	nssov_netgroup_init(ni);
+	nssov_network_init(ni);
+	nssov_passwd_init(ni);
+	nssov_protocol_init(ni);
+	nssov_rpc_init(ni);
+	nssov_service_init(ni);
+	nssov_shadow_init(ni);
+
+	ni->ni_db = be->bd_self;
+	ni->ni_pam_opts = NI_PAM_UID2DN;
+
+	return 0;
+}
+
+static int
+nssov_db_destroy(
+	BackendDB *be,
+	ConfigReply *cr )
+{
+	return 0;
+}
+
+static int
+nssov_db_open(
+	BackendDB *be,
+	ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	nssov_info *ni = on->on_bi.bi_private;
+	nssov_mapinfo *mi;
+
+	int i, sock;
+	struct sockaddr_un addr;
+
+	/* Set default bases */
+	for (i=0; i<NM_NONE; i++) {
+		if ( BER_BVISNULL( &ni->ni_maps[i].mi_base )) {
+			ber_dupbv( &ni->ni_maps[i].mi_base, &be->be_nsuffix[0] );
+		}
+		if ( ni->ni_maps[i].mi_scope == LDAP_SCOPE_DEFAULT )
+			ni->ni_maps[i].mi_scope = LDAP_SCOPE_SUBTREE;
+	}
+	/* validate attribute maps */
+	mi = ni->ni_maps;
+	for ( i=0; i<NM_NONE; i++,mi++) {
+		const char *text;
+		int j;
+		for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
+			/* skip attrs we already validated */
+			if ( mi->mi_attrs[j].an_desc ) continue;
+			if ( slap_bv2ad( &mi->mi_attrs[j].an_name,
+				&mi->mi_attrs[j].an_desc, &text )) {
+				Debug(LDAP_DEBUG_ANY,"nssov: invalid attr \"%s\": %s\n",
+					mi->mi_attrs[j].an_name.bv_val, text );
+				return -1;
+			}
+		}
+		BER_BVZERO(&mi->mi_attrs[j].an_name);
+		mi->mi_attrs[j].an_desc = NULL;
+	}
+
+	/* Find host and authorizedService definitions */
+	if ((ni->ni_pam_opts & NI_PAM_USERHOST) && !nssov_pam_host_ad)
+	{
+		const char *text;
+		i = slap_str2ad("host", &nssov_pam_host_ad, &text);
+		if (i != LDAP_SUCCESS) {
+			Debug(LDAP_DEBUG_ANY,"nssov: host attr unknown: %s\n",
+				text );
+			return -1;
+		}
+	}
+	if ((ni->ni_pam_opts & (NI_PAM_USERSVC|NI_PAM_HOSTSVC)) &&
+		!nssov_pam_svc_ad)
+	{
+		const char *text;
+		i = slap_str2ad("authorizedService", &nssov_pam_svc_ad, &text);
+		if (i != LDAP_SUCCESS) {
+			Debug(LDAP_DEBUG_ANY,"nssov: authorizedService attr unknown: %s\n",
+				text );
+			return -1;
+		}
+	}
+	if ( slapMode & SLAP_SERVER_MODE ) {
+		char ebuf[128];
+		/* make sure /var/run/nslcd exists */
+		if (mkdir(NSLCD_PATH, (mode_t) 0555)) {
+			int saved_errno = errno;
+			Debug(LDAP_DEBUG_TRACE,"nssov: mkdir(%s) failed (ignored): %s\n",
+					NSLCD_PATH, AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+		} else {
+			Debug(LDAP_DEBUG_TRACE,"nssov: created %s\n",NSLCD_PATH );
+		}
+
+		/* create a socket */
+		if ( (sock=socket(PF_UNIX,SOCK_STREAM,0))<0 )
+		{
+			int saved_errno = errno;
+			Debug(LDAP_DEBUG_ANY,"nssov: cannot create socket: %s\n",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			return -1;
+		}
+		/* remove existing named socket */
+		if (unlink(NSLCD_SOCKET)<0)
+		{
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_TRACE,"nssov: unlink() of "NSLCD_SOCKET" failed (ignored): %s\n",
+							AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+		}
+		/* create socket address structure */
+		memset(&addr,0,sizeof(struct sockaddr_un));
+		addr.sun_family=AF_UNIX;
+		strncpy(addr.sun_path,NSLCD_SOCKET,sizeof(addr.sun_path));
+		addr.sun_path[sizeof(addr.sun_path)-1]='\0';
+		/* bind to the named socket */
+		if (bind(sock,(struct sockaddr *)&addr,sizeof(struct sockaddr_un)))
+		{
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_ANY,"nssov: bind() to "NSLCD_SOCKET" failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			if (close(sock)) {
+				saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			return -1;
+		}
+		/* close the file descriptor on exit */
+		if (fcntl(sock,F_SETFD,FD_CLOEXEC)<0)
+		{
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_SETFL,O_NONBLOCK) failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			if (close(sock)) {
+				saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			return -1;
+		}
+		/* set permissions of socket so anybody can do requests */
+		/* Note: we use chmod() here instead of fchmod() because
+			 fchmod does not work on sockets
+			 http://www.opengroup.org/onlinepubs/009695399/functions/fchmod.html
+			 http://lkml.org/lkml/2005/5/16/11 */
+		if (chmod(NSLCD_SOCKET,(mode_t)0666))
+		{
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_ANY,"nssov: chmod(0666) failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			if (close(sock)) {
+				saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			return -1;
+		}
+		/* start listening for connections */
+		if (listen(sock,SOMAXCONN)<0)
+		{
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_ANY,"nssov: listen() failed: %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			if (close(sock)) {
+				saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			return -1;
+		}
+		ni->ni_socket = sock;
+		ni->ni_conn = connection_client_setup( sock, acceptconn, ni );
+	}
+
+	return 0;
+}
+
+static int
+nssov_db_close(
+	BackendDB *be,
+	ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	nssov_info *ni = on->on_bi.bi_private;
+
+	if ( slapMode & SLAP_SERVER_MODE ) {
+		char ebuf[128];
+		/* close socket if it's still in use */
+		if (ni->ni_socket >= 0)
+		{
+			if (close(ni->ni_socket)) {
+				int saved_errno = errno;
+				Debug( LDAP_DEBUG_ANY,"problem closing server socket (ignored): %s",
+					AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+			}
+			ni->ni_socket = -1;
+		}
+		/* remove existing named socket */
+		if (unlink(NSLCD_SOCKET)<0)
+		{
+			int saved_errno = errno;
+			Debug( LDAP_DEBUG_TRACE,"unlink() of "NSLCD_SOCKET" failed (ignored): %s",
+				AC_STRERROR_R(saved_errno, ebuf, sizeof(ebuf)) );
+		}
+	}
+	return 0;
+}
+
+static slap_overinst nssov;
+
+int
+nssov_initialize( void )
+{
+	int rc;
+
+	nssov.on_bi.bi_type = "nssov";
+	nssov.on_bi.bi_db_init = nssov_db_init;
+	nssov.on_bi.bi_db_destroy = nssov_db_destroy;
+	nssov.on_bi.bi_db_open = nssov_db_open;
+	nssov.on_bi.bi_db_close = nssov_db_close;
+
+	nssov.on_bi.bi_cf_ocs = nssocs;
+
+	rc = config_register_schema( nsscfg, nssocs );
+	if ( rc ) return rc;
+
+	return overlay_register(&nssov);
+}
+
+#if SLAPD_OVER_NSSOV == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return nssov_initialize();
+}
+#endif
diff --git a/contrib/slapd-modules/nssov/nssov.h b/contrib/slapd-modules/nssov/nssov.h
new file mode 100644
index 0000000..ce1ecd7
--- /dev/null
+++ b/contrib/slapd-modules/nssov/nssov.h
@@ -0,0 +1,348 @@
+/* nssov.h - NSS overlay header file */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 Howard Chu.
+ * Portions Copyright 2013 Ted C. Cheng, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#ifndef NSSOV_H
+#define NSSOV_H
+
+#ifndef NSLCD_PATH
+#define	NSLCD_PATH	"/var/run/nslcd"
+#endif
+
+#ifndef NSLCD_SOCKET
+#define NSLCD_SOCKET	NSLCD_PATH "/socket"
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "nslcd.h"
+#include "nslcd-prot.h"
+#include "tio.h"
+#include "attrs.h"
+
+#undef PACKAGE_BUGREPORT
+#undef PACKAGE_NAME
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+#undef PACKAGE_VERSION
+
+#include "portable.h"
+#include "slap.h"
+#include <ac/string.h>
+
+/* selectors for different maps */
+enum nssov_map_selector
+{
+  NM_alias,
+  NM_ether,
+  NM_group,
+  NM_host,
+  NM_netgroup,
+  NM_network,
+  NM_passwd,
+  NM_protocol,
+  NM_rpc,
+  NM_service,
+  NM_shadow,
+  NM_NONE
+};
+
+typedef struct nssov_mapinfo {
+	struct berval mi_base;
+	int mi_scope;
+	struct berval mi_filter0;
+	struct berval mi_filter;
+	struct berval *mi_attrkeys;
+	AttributeName *mi_attrs;
+} nssov_mapinfo;
+
+typedef struct nssov_info
+{
+	/* search timelimit */
+	int ni_timelimit;
+	struct nssov_mapinfo ni_maps[NM_NONE];
+	int ni_socket;
+	Connection *ni_conn;
+	BackendDB *ni_db;
+
+	/* PAM authz support... */
+	slap_mask_t ni_pam_opts;
+	struct berval ni_pam_group_dn;
+	AttributeDescription *ni_pam_group_ad;
+	int ni_pam_min_uid;
+	int ni_pam_max_uid;
+	AttributeDescription *ni_pam_template_ad;
+	struct berval ni_pam_template;
+	struct berval ni_pam_defhost;
+	struct berval *ni_pam_sessions;
+	struct berval ni_pam_password_prohibit_message;
+	struct berval ni_pam_pwdmgr_dn;
+	struct berval ni_pam_pwdmgr_pwd;
+} nssov_info;
+
+#define NI_PAM_USERHOST		1	/* old style host checking */
+#define NI_PAM_USERSVC		2	/* old style service checking */
+#define NI_PAM_USERGRP		4	/* old style group checking */
+#define NI_PAM_HOSTSVC		8	/* new style authz checking */
+#define NI_PAM_SASL2DN		0x10	/* use sasl2dn */
+#define NI_PAM_UID2DN		0x20	/* use uid2dn */
+
+#define	NI_PAM_OLD	(NI_PAM_USERHOST|NI_PAM_USERSVC|NI_PAM_USERGRP)
+#define	NI_PAM_NEW	NI_PAM_HOSTSVC
+
+extern AttributeDescription *nssov_pam_host_ad;
+extern AttributeDescription *nssov_pam_svc_ad;
+
+/* Read the default configuration file. */
+void nssov_cfg_init(nssov_info *ni,const char *fname);
+
+/* macros for basic read and write operations, the following
+   ERROR_OUT* marcos define the action taken on errors
+   the stream is not closed because the caller closes the
+   stream */
+
+#define ERROR_OUT_WRITEERROR(fp) \
+  Debug(LDAP_DEBUG_ANY,"nssov: error writing to client\n"); \
+  return -1;
+
+#define ERROR_OUT_READERROR(fp) \
+  Debug(LDAP_DEBUG_ANY,"nssov: error reading from client\n"); \
+  return -1;
+
+#define ERROR_OUT_BUFERROR(fp) \
+  Debug(LDAP_DEBUG_ANY,"nssov: client supplied argument too large\n"); \
+  return -1;
+
+#define WRITE_BERVAL(fp, bv)                                                   \
+  DEBUG_PRINT("WRITE_BERVAL: var="__STRING(bv)" bv_val=\"%s\"", (bv)->bv_val); \
+  if ((bv) == NULL)                                                            \
+  {                                                                            \
+    WRITE_INT32(fp, 0);                                                        \
+  }                                                                            \
+  else                                                                         \
+  {                                                                            \
+    WRITE_INT32(fp, (bv)->bv_len);                                             \
+    tmpint32 = ntohl(tmpint32);                                                \
+    if (tmpint32 > 0)                                                          \
+    {                                                                          \
+      WRITE(fp, (bv)->bv_val, tmpint32);                                       \
+    }                                                                          \
+  }                                                                            \
+
+#define WRITE_BVARRAY(fp, arr)                                                 \
+  if ((arr) == NULL)                                                           \
+  {                                                                            \
+    DEBUG_PRINT("WRITE_BVARRAY: var="__STRING(arr)" num=%d", 0);               \
+    WRITE_INT32(fp, 0);                                                        \
+  }                                                                            \
+  else                                                                         \
+  {                                                                            \
+    /* first determine length of array */                                      \
+    for (tmp3int32 = 0; (arr)[tmp3int32].bv_val != NULL; tmp3int32++)          \
+      /* nothing */ ;                                                          \
+    /* write number of strings */                                              \
+    DEBUG_PRINT("WRITE_BVARRAY: var="__STRING(arr)" num=%d", (int)tmp3int32);  \
+    WRITE_INT32(fp, tmp3int32);                                                \
+    /* write strings */                                                        \
+    for (tmp2int32 = 0; tmp2int32 < tmp3int32; tmp2int32++)                    \
+    {                                                                          \
+      WRITE_BERVAL(fp, &(arr)[tmp2int32]);                                     \
+    }                                                                          \
+  }                                                                            \
+
+/* Find the given attribute's value in the RDN of the DN. */
+void nssov_find_rdnval(struct berval *dn,AttributeDescription *ad,struct berval *value);
+
+/* This tries to get the user password attribute from the entry.
+   It will try to return an encrypted password as it is used in /etc/passwd,
+   /etc/group or /etc/shadow depending upon what is in the directory.
+   This function will return NULL if no passwd is found and will return the
+   literal value in the directory if conversion is not possible. */
+void get_userpassword(struct berval *attr, struct berval *pw);
+
+/* write out an address, parsing the addr value */
+int write_address(TFILE *fp,struct berval *addr);
+
+/* a helper macro to write out addresses and bail out on errors */
+#define WRITE_ADDRESS(fp,addr) \
+  if (write_address(fp,addr)) \
+    return -1;
+
+/* read an address from the stream */
+int read_address(TFILE *fp,char *addr,int *addrlen,int *af);
+
+/* helper macro to read an address from the stream */
+#define READ_ADDRESS(fp,addr,len,af) \
+  len=(int)sizeof(addr); \
+  if (read_address(fp,addr,&(len),&(af))) \
+    return -1;
+
+/* checks to see if the specified string is a valid username */
+int isvalidusername(struct berval *name);
+
+/* transforms the DN into a uid doing an LDAP lookup if needed */
+int nssov_dn2uid(Operation *op,nssov_info *ni,struct berval *dn,struct berval *uid);
+
+/* transforms the uid into a DN by doing an LDAP lookup */
+int nssov_uid2dn(Operation *op,nssov_info *ni,struct berval *uid,struct berval *dn);
+int nssov_name2dn_cb(Operation *op, SlapReply *rs);
+
+/* Escapes characters in a string for use in a search filter. */
+int nssov_escape(struct berval *src,struct berval *dst);
+
+int nssov_filter_byname(nssov_mapinfo *mi,int key,struct berval *name,struct berval *buf);
+int nssov_filter_byid(nssov_mapinfo *mi,int key,struct berval *id,struct berval *buf);
+
+void nssov_alias_init(nssov_info *ni);
+void nssov_ether_init(nssov_info *ni);
+void nssov_group_init(nssov_info *ni);
+void nssov_host_init(nssov_info *ni);
+void nssov_netgroup_init(nssov_info *ni);
+void nssov_network_init(nssov_info *ni);
+void nssov_passwd_init(nssov_info *ni);
+void nssov_protocol_init(nssov_info *ni);
+void nssov_rpc_init(nssov_info *ni);
+void nssov_service_init(nssov_info *ni);
+void nssov_shadow_init(nssov_info *ni);
+
+int nssov_pam_init(void);
+
+/* these are the different functions that handle the database
+   specific actions, see nslcd.h for the action descriptions */
+int nssov_alias_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_alias_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_ether_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_ether_byether(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_ether_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_bygid(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_bymember(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_group_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_host_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_host_byaddr(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_host_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_netgroup_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_network_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_network_byaddr(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_network_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_passwd_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_passwd_byuid(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_passwd_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_protocol_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_protocol_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_protocol_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_rpc_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_rpc_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_rpc_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_service_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_service_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_service_all(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_shadow_byname(nssov_info *ni,TFILE *fp,Operation *op);
+int nssov_shadow_all(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_authc(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid);
+int pam_authz(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_sess_o(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op);
+int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid);
+
+/* config initialization */
+#define NSSOV_INIT(db) \
+ void nssov_##db##_init(nssov_info *ni) \
+ { \
+	nssov_mapinfo *mi = &ni->ni_maps[NM_##db]; \
+	int i; \
+	for (i=0;!BER_BVISNULL(&db##_keys[i]);i++); \
+	i++; \
+	mi->mi_attrs = ch_malloc( i*sizeof(AttributeName)); \
+	for (i=0;!BER_BVISNULL(&db##_keys[i]);i++) { \
+		mi->mi_attrs[i].an_name = db##_keys[i]; \
+		mi->mi_attrs[i].an_desc = NULL; \
+	} \
+	mi->mi_scope = LDAP_SCOPE_DEFAULT; \
+	mi->mi_filter0 = db##_filter; \
+	ber_dupbv( &mi->mi_filter, &mi->mi_filter0 ); \
+	mi->mi_filter = db##_filter; \
+	mi->mi_attrkeys = db##_keys; \
+	BER_BVZERO(&mi->mi_base); \
+ }
+
+/* param structure for search callback */
+#define NSSOV_CBPRIV(db,parms) \
+  typedef struct nssov_##db##_cbp { \
+  	nssov_mapinfo *mi; \
+	TFILE *fp; \
+	Operation *op; \
+	parms \
+  } nssov_##db##_cbp
+
+/* callback for writing search results */
+#define NSSOV_CB(db) \
+  static int nssov_##db##_cb(Operation *op, SlapReply *rs) \
+  { \
+    if ( rs->sr_type == REP_SEARCH ) { \
+    nssov_##db##_cbp *cbp = op->o_callback->sc_private; \
+  	if (write_##db(cbp,rs->sr_entry)) return LDAP_OTHER; \
+  } \
+  return LDAP_SUCCESS; \
+  } \
+
+/* macro for generating service handling code */
+#define NSSOV_HANDLE(db,fn,readfn,logcall,action,mkfilter) \
+  int nssov_##db##_##fn(nssov_info *ni,TFILE *fp,Operation *op) \
+  { \
+    /* define common variables */ \
+    int32_t tmpint32; \
+	nssov_##db##_cbp cbp; \
+	slap_callback cb = {0}; \
+	SlapReply rs = {REP_RESULT}; \
+	cbp.mi = &ni->ni_maps[NM_##db]; \
+	cbp.fp = fp; \
+	cbp.op = op; \
+    /* read request parameters */ \
+    readfn; \
+    /* log call */ \
+    logcall; \
+    /* write the response header */ \
+    WRITE_INT32(fp,NSLCD_VERSION); \
+    WRITE_INT32(fp,action); \
+    /* prepare the search filter */ \
+    if (mkfilter) \
+    { \
+      Debug(LDAP_DEBUG_ANY,"nssov_" __STRING(db) "_" __STRING(fn) "(): filter buffer too small"); \
+      return -1; \
+    } \
+	cb.sc_private = &cbp; \
+	op->o_callback = &cb; \
+	cb.sc_response = nssov_##db##_cb; \
+	slap_op_time( &op->o_time, &op->o_tincr ); \
+	op->o_req_dn = cbp.mi->mi_base; \
+	op->o_req_ndn = cbp.mi->mi_base; \
+	op->ors_scope = cbp.mi->mi_scope; \
+	op->ors_filterstr = filter; \
+	op->ors_filter = str2filter_x( op, filter.bv_val ); \
+	op->ors_attrs = cbp.mi->mi_attrs; \
+	op->ors_tlimit = SLAP_NO_LIMIT; \
+	op->ors_slimit = SLAP_NO_LIMIT; \
+    /* do the internal search */ \
+	op->o_bd->be_search( op, &rs ); \
+	filter_free_x( op, op->ors_filter, 1 ); \
+	WRITE_INT32(fp,NSLCD_RESULT_END); \
+    return 0; \
+  }
+
+#endif /* NSSOV_H */
diff --git a/contrib/slapd-modules/nssov/pam.c b/contrib/slapd-modules/nssov/pam.c
new file mode 100644
index 0000000..1d416c7
--- /dev/null
+++ b/contrib/slapd-modules/nssov/pam.c
@@ -0,0 +1,862 @@
+/* pam.c - pam processing routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * Portions Copyright 2013 by Ted C. Cheng, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "nssov.h"
+#include "lutil.h"
+
+#undef ldap_debug	/* silence a warning in ldap-int.h */
+#include "../../../libraries/libldap/ldap-int.h"	/* for ldap_ld_free */
+
+static int ppolicy_cid;
+static AttributeDescription *ad_loginStatus;
+
+struct paminfo {
+	struct berval uid;
+	struct berval dn;
+	struct berval svc;
+	struct berval ruser;
+	struct berval rhost;
+	struct berval tty;
+	struct berval pwd;
+	int authz;
+	struct berval msg;
+	int ispwdmgr;
+};
+
+static int pam_bindcb(
+	Operation *op, SlapReply *rs)
+{
+	struct paminfo *pi = op->o_callback->sc_private;
+	LDAPControl *ctrl = ldap_control_find(LDAP_CONTROL_PASSWORDPOLICYRESPONSE,
+		rs->sr_ctrls, NULL);
+	if (ctrl) {
+		LDAP *ld;
+		ber_int_t expire, grace;
+		LDAPPasswordPolicyError error;
+
+		ldap_create(&ld);
+		if (ld) {
+			int rc = ldap_parse_passwordpolicy_control(ld,ctrl,
+				&expire,&grace,&error);
+			if (rc == LDAP_SUCCESS) {
+				if (expire >= 0) {
+					char *unit = "seconds";
+					if (expire > 60) {
+						expire /= 60;
+						unit = "minutes";
+					}
+					if (expire > 60) {
+						expire /= 60;
+						unit = "hours";
+					}
+					if (expire > 24) {
+						expire /= 24;
+						unit = "days";
+					}
+#if 0	/* Who warns about expiration so far in advance? */
+					if (expire > 7) {
+						expire /= 7;
+						unit = "weeks";
+					}
+					if (expire > 4) {
+						expire /= 4;
+						unit = "months";
+					}
+					if (expire > 12) {
+						expire /= 12;
+						unit = "years";
+					}
+#endif
+					pi->msg.bv_len = sprintf(pi->msg.bv_val,
+						"\nWARNING: Password expires in %d %s\n", expire, unit);
+				} else if (grace > 0) {
+					pi->msg.bv_len = sprintf(pi->msg.bv_val,
+						"Password expired; %d grace logins remaining",
+						grace);
+					pi->authz = NSLCD_PAM_NEW_AUTHTOK_REQD;
+				} else if (error != PP_noError) {
+					ber_str2bv(ldap_passwordpolicy_err2txt(error), 0, 0,
+						&pi->msg);
+					switch (error) {
+					case PP_passwordExpired:
+						/* report this during authz */
+						rs->sr_err = LDAP_SUCCESS;
+						/* fallthru */
+					case PP_changeAfterReset:
+						pi->authz = NSLCD_PAM_NEW_AUTHTOK_REQD;
+					}
+				}
+			}
+			ldap_ld_free(ld,0,NULL,NULL);
+		}
+	}
+	return LDAP_SUCCESS;
+}
+
+static int pam_uid2dn(nssov_info *ni, Operation *op,
+	struct paminfo *pi)
+{
+	struct berval sdn;
+
+	BER_BVZERO(&pi->dn);
+
+	if (!isvalidusername(&pi->uid)) {
+		Debug(LDAP_DEBUG_ANY,"nssov_pam_uid2dn(%s): invalid user name\n",
+			pi->uid.bv_val ? pi->uid.bv_val : "NULL" );
+		return NSLCD_PAM_USER_UNKNOWN;
+	}
+
+	if (ni->ni_pam_opts & NI_PAM_SASL2DN) {
+		int hlen = global_host_bv.bv_len;
+
+		/* cn=<service>+uid=<user>,cn=<host>,cn=pam,cn=auth */
+		sdn.bv_len = pi->uid.bv_len + pi->svc.bv_len + hlen +
+			STRLENOF( "cn=+uid=,cn=,cn=pam,cn=auth" );
+		sdn.bv_val = op->o_tmpalloc( sdn.bv_len + 1, op->o_tmpmemctx );
+		sprintf(sdn.bv_val, "cn=%s+uid=%s,cn=%s,cn=pam,cn=auth",
+			pi->svc.bv_val, pi->uid.bv_val, global_host_bv.bv_val);
+		slap_sasl2dn(op, &sdn, &pi->dn, 0);
+		op->o_tmpfree( sdn.bv_val, op->o_tmpmemctx );
+	}
+
+	/* If no luck, do a basic uid search */
+	if (BER_BVISEMPTY(&pi->dn) && (ni->ni_pam_opts & NI_PAM_UID2DN)) {
+		nssov_uid2dn(op, ni, &pi->uid, &pi->dn);
+		if (!BER_BVISEMPTY(&pi->dn)) {
+			sdn = pi->dn;
+			dnNormalize( 0, NULL, NULL, &sdn, &pi->dn, op->o_tmpmemctx );
+		}
+	}
+	if (BER_BVISEMPTY(&pi->dn)) {
+		return NSLCD_PAM_USER_UNKNOWN;
+	}
+	return 0;
+}
+
+int pam_do_bind(nssov_info *ni,TFILE *fp,Operation *op,
+	struct paminfo *pi)
+{
+	int rc;
+	slap_callback cb = {0};
+	SlapReply rs = {REP_RESULT};
+
+	pi->msg.bv_val = pi->pwd.bv_val;
+	pi->msg.bv_len = 0;
+	pi->authz = NSLCD_PAM_SUCCESS;
+
+	if (!pi->ispwdmgr) {
+
+		rc = pam_uid2dn(ni, op, pi);
+		if (rc) goto finish;
+
+		if (BER_BVISEMPTY(&pi->pwd)) {
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto finish;
+		}
+
+		/* Should only need to do this once at open time, but there's always
+		 * the possibility that ppolicy will get loaded later.
+		 */
+		if (!ppolicy_cid) {
+			rc = slap_find_control_id(LDAP_CONTROL_PASSWORDPOLICYREQUEST,
+				&ppolicy_cid);
+		}
+		/* of course, 0 is a valid cid, but it won't be ppolicy... */
+		if (ppolicy_cid) {
+			op->o_ctrlflag[ppolicy_cid] = SLAP_CONTROL_NONCRITICAL;
+		}
+	}
+
+	cb.sc_response = pam_bindcb;
+	cb.sc_private = pi;
+	op->o_callback = &cb;
+	op->o_dn.bv_val[0] = 0;
+	op->o_dn.bv_len = 0;
+	op->o_ndn.bv_val[0] = 0;
+	op->o_ndn.bv_len = 0;
+	op->o_tag = LDAP_REQ_BIND;
+	op->o_protocol = LDAP_VERSION3;
+	op->orb_method = LDAP_AUTH_SIMPLE;
+	op->orb_cred = pi->pwd;
+	op->o_req_dn = pi->dn;
+	op->o_req_ndn = pi->dn;
+	slap_op_time( &op->o_time, &op->o_tincr );
+	rc = op->o_bd->be_bind( op, &rs );
+	memset(pi->pwd.bv_val,0,pi->pwd.bv_len);
+	/* quirk: on successful bind, caller has to send result. we need
+	 * to make sure callbacks run.
+	 */
+	if (rc == LDAP_SUCCESS)
+		send_ldap_result(op, &rs);
+	switch(rs.sr_err) {
+	case LDAP_SUCCESS: rc = NSLCD_PAM_SUCCESS; break;
+	case LDAP_INVALID_CREDENTIALS: rc = NSLCD_PAM_AUTH_ERR; break;
+	default: rc = NSLCD_PAM_AUTH_ERR; break;
+	}
+finish:
+	Debug(LDAP_DEBUG_ANY,"pam_do_bind (%s): rc (%d)\n",
+		pi->dn.bv_val ? pi->dn.bv_val : "NULL", rc );
+	return rc;
+}
+
+int pam_authc(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid)
+{
+	int32_t tmpint32;
+	int rc;
+	char uidc[32];
+	char svcc[256];
+	char ruserc[32];
+	char rhostc[256];
+	char ttyc[256];
+	char pwdc[256];
+	struct paminfo pi;
+
+
+	READ_STRING(fp,uidc);
+	pi.uid.bv_val = uidc;
+	pi.uid.bv_len = tmpint32;
+	READ_STRING(fp,svcc);
+	pi.svc.bv_val = svcc;
+	pi.svc.bv_len = tmpint32;
+	READ_STRING(fp,ruserc);
+	pi.ruser.bv_val = ruserc;
+	pi.ruser.bv_len = tmpint32;
+	READ_STRING(fp,rhostc);
+	pi.rhost.bv_val = rhostc;
+	pi.rhost.bv_len = tmpint32;
+	READ_STRING(fp,ttyc);
+	pi.tty.bv_val = ttyc;
+	pi.tty.bv_len = tmpint32;
+	READ_STRING(fp,pwdc);
+	pi.pwd.bv_val = pwdc;
+	pi.pwd.bv_len = tmpint32;
+
+	Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(%s)\n",
+			pi.uid.bv_val ? pi.uid.bv_val : "NULL" );
+
+	BER_BVZERO(&pi.msg);
+	pi.ispwdmgr = 0;
+
+	/* if service is "passwd" and "nssov-pam-password-prohibit-message */
+	/* is set, deny the auth request */
+	if (!strcmp(svcc, "passwd") &&
+		!BER_BVISEMPTY(&ni->ni_pam_password_prohibit_message)) {
+		Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(): %s (%s)\n",
+			"password_prohibit_message for passwd",
+			ni->ni_pam_password_prohibit_message.bv_val );
+		ber_str2bv(ni->ni_pam_password_prohibit_message.bv_val, 0, 0, &pi.msg);
+		pi.authz = NSLCD_PAM_PERM_DENIED;
+		rc = NSLCD_PAM_PERM_DENIED;
+		goto finish;
+	}
+
+	/* if username is null, pwdmgr password preliminary check */
+	if (BER_BVISEMPTY(&pi.uid)) {
+		if (BER_BVISEMPTY(&ni->ni_pam_pwdmgr_dn)) {
+			/* pwdmgr dn not configured */
+			Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(prelim check): %s\n",
+				"pwdmgr dn not configured" );
+			ber_str2bv("pwdmgr dn not configured", 0, 0, &pi.msg);
+			pi.authz = NSLCD_PAM_PERM_DENIED;
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto finish;
+		} else if (calleruid != 0) {
+			Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(prelim check): %s\n",
+				"caller is not root" );
+			ber_str2bv("only root may do that", 0, 0, &pi.msg);
+			pi.authz = NSLCD_PAM_PERM_DENIED;
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto finish;
+		} else {
+			/* use pwdmgr dn */
+			ber_str2bv(ni->ni_pam_pwdmgr_dn.bv_val, 0, 0, &pi.dn);
+		}
+
+		/* use pwdmgr pwd if configured */
+		if (BER_BVISEMPTY(&pi.pwd)) {
+			if (BER_BVISEMPTY(&ni->ni_pam_pwdmgr_pwd)) {
+				Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(prelim check): %s\n",
+					"no pwdmgr pwd" );
+				ber_str2bv("pwdmgr pwd not configured", 0, 0, &pi.msg);
+				pi.authz = NSLCD_PAM_PERM_DENIED;
+				rc = NSLCD_PAM_PERM_DENIED;
+				goto finish;
+			}
+			/* use configured pwdmgr pwd */
+			memset((void *) pwdc, 0, 256);
+			strncpy(pi.pwd.bv_val, ni->ni_pam_pwdmgr_pwd.bv_val,
+					ni->ni_pam_pwdmgr_pwd.bv_len);
+			pi.pwd.bv_len = ni->ni_pam_pwdmgr_pwd.bv_len;
+		}
+		pi.ispwdmgr = 1;
+	}
+
+
+	rc = pam_do_bind(ni, fp, op, &pi);
+
+finish:
+	Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(%s): rc (%d)\n",
+		pi.dn.bv_val ? pi.dn.bv_val : "NULL",rc );
+	WRITE_INT32(fp,NSLCD_VERSION);
+	WRITE_INT32(fp,NSLCD_ACTION_PAM_AUTHC);
+	WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
+	WRITE_INT32(fp,rc);
+	WRITE_BERVAL(fp,&pi.uid);
+	WRITE_INT32(fp,pi.authz);	/* authz */
+	WRITE_BERVAL(fp,&pi.msg);	/* authzmsg */
+	WRITE_INT32(fp,NSLCD_RESULT_END);
+	return 0;
+}
+
+static struct berval grpmsg =
+	BER_BVC("Access denied by group check");
+static struct berval hostmsg =
+	BER_BVC("Access denied for this host");
+static struct berval svcmsg =
+	BER_BVC("Access denied for this service");
+static struct berval uidmsg =
+	BER_BVC("Access denied by UID check");
+
+static int pam_compare_cb(Operation *op, SlapReply *rs)
+{
+	if (rs->sr_err == LDAP_COMPARE_TRUE)
+		op->o_callback->sc_private = (void *)1;
+	return LDAP_SUCCESS;
+}
+
+int pam_authz(nssov_info *ni,TFILE *fp,Operation *op)
+{
+	struct berval authzmsg = BER_BVNULL;
+	int32_t tmpint32;
+	char uidc[32];
+	char svcc[256];
+	char ruserc[32];
+	char rhostc[256];
+	char ttyc[256];
+	int rc;
+	struct paminfo pi;
+	Entry *e = NULL;
+	Attribute *a;
+	slap_callback cb = {0};
+
+	READ_STRING(fp,uidc);
+	pi.uid.bv_val = uidc;
+	pi.uid.bv_len = tmpint32;
+	READ_STRING(fp,svcc);
+	pi.svc.bv_val = svcc;
+	pi.svc.bv_len = tmpint32;
+	READ_STRING(fp,ruserc);
+	pi.ruser.bv_val = ruserc;
+	pi.ruser.bv_len = tmpint32;
+	READ_STRING(fp,rhostc);
+	pi.rhost.bv_val = rhostc;
+	pi.rhost.bv_len = tmpint32;
+	READ_STRING(fp,ttyc);
+	pi.tty.bv_val = ttyc;
+	pi.tty.bv_len = tmpint32;
+
+	rc = pam_uid2dn(ni, op, &pi);
+	if (rc) goto finish;
+
+	Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(%s)\n",
+			pi.dn.bv_val ? pi.dn.bv_val : "NULL" );
+
+	/* See if they have access to the host and service */
+	if ((ni->ni_pam_opts & NI_PAM_HOSTSVC) && nssov_pam_svc_ad) {
+		AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
+		struct berval hostdn = BER_BVNULL;
+		struct berval odn = op->o_ndn;
+		SlapReply rs = {REP_RESULT};
+		op->o_dn = pi.dn;
+		op->o_ndn = pi.dn;
+		{
+			nssov_mapinfo *mi = &ni->ni_maps[NM_host];
+			char fbuf[1024];
+			struct berval filter = {sizeof(fbuf),fbuf};
+			SlapReply rs2 = {REP_RESULT};
+
+			/* Lookup the host entry */
+			nssov_filter_byname(mi,0,&global_host_bv,&filter);
+			cb.sc_private = &hostdn;
+			cb.sc_response = nssov_name2dn_cb;
+			op->o_callback = &cb;
+			op->o_req_dn = mi->mi_base;
+			op->o_req_ndn = mi->mi_base;
+			op->ors_scope = mi->mi_scope;
+			op->ors_filterstr = filter;
+			op->ors_filter = str2filter_x(op, filter.bv_val);
+			op->ors_attrs = slap_anlist_no_attrs;
+			op->ors_tlimit = SLAP_NO_LIMIT;
+			op->ors_slimit = 2;
+			rc = op->o_bd->be_search(op, &rs2);
+			filter_free_x(op, op->ors_filter, 1);
+
+			if (BER_BVISEMPTY(&hostdn) &&
+				!BER_BVISEMPTY(&ni->ni_pam_defhost)) {
+				filter.bv_len = sizeof(fbuf);
+				filter.bv_val = fbuf;
+				rs_reinit(&rs2, REP_RESULT);
+				nssov_filter_byname(mi,0,&ni->ni_pam_defhost,&filter);
+				op->ors_filterstr = filter;
+				op->ors_filter = str2filter_x(op, filter.bv_val);
+				rc = op->o_bd->be_search(op, &rs2);
+				filter_free_x(op, op->ors_filter, 1);
+			}
+
+			/* no host entry, no default host -> deny */
+			if (BER_BVISEMPTY(&hostdn)) {
+				rc = NSLCD_PAM_PERM_DENIED;
+				authzmsg = hostmsg;
+				goto finish;
+			}
+		}
+
+		cb.sc_response = pam_compare_cb;
+		cb.sc_private = NULL;
+		op->o_tag = LDAP_REQ_COMPARE;
+		op->o_req_dn = hostdn;
+		op->o_req_ndn = hostdn;
+		ava.aa_desc = nssov_pam_svc_ad;
+		ava.aa_value = pi.svc;
+		op->orc_ava = &ava;
+		rc = op->o_bd->be_compare( op, &rs );
+		if ( cb.sc_private == NULL ) {
+			authzmsg = svcmsg;
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto finish;
+		}
+		op->o_dn = odn;
+		op->o_ndn = odn;
+	}
+
+	/* See if they're a member of the group */
+	if ((ni->ni_pam_opts & NI_PAM_USERGRP) &&
+		!BER_BVISEMPTY(&ni->ni_pam_group_dn) &&
+		ni->ni_pam_group_ad) {
+		AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
+		SlapReply rs = {REP_RESULT};
+		op->o_callback = &cb;
+		cb.sc_response = pam_compare_cb;
+		cb.sc_private = NULL;
+		op->o_tag = LDAP_REQ_COMPARE;
+		op->o_req_dn = ni->ni_pam_group_dn;
+		op->o_req_ndn = ni->ni_pam_group_dn;
+		ava.aa_desc = ni->ni_pam_group_ad;
+		ava.aa_value = pi.dn;
+		op->orc_ava = &ava;
+		rc = op->o_bd->be_compare( op, &rs );
+		if ( cb.sc_private == NULL ) {
+			authzmsg = grpmsg;
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto finish;
+		}
+	}
+
+	/* We need to check the user's entry for these bits */
+	if ((ni->ni_pam_opts & (NI_PAM_USERHOST|NI_PAM_USERSVC)) ||
+		ni->ni_pam_template_ad ||
+		ni->ni_pam_min_uid || ni->ni_pam_max_uid ) {
+		rc = be_entry_get_rw( op, &pi.dn, NULL, NULL, 0, &e );
+		if (rc != LDAP_SUCCESS) {
+			rc = NSLCD_PAM_USER_UNKNOWN;
+			goto finish;
+		}
+	}
+	if ((ni->ni_pam_opts & NI_PAM_USERHOST) && nssov_pam_host_ad) {
+		a = attr_find(e->e_attrs, nssov_pam_host_ad);
+		if (!a || attr_valfind( a,
+			SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+			SLAP_MR_VALUE_OF_SYNTAX,
+			&global_host_bv, NULL, op->o_tmpmemctx )) {
+			rc = NSLCD_PAM_PERM_DENIED;
+			authzmsg = hostmsg;
+			goto finish;
+		}
+	}
+	if ((ni->ni_pam_opts & NI_PAM_USERSVC) && nssov_pam_svc_ad) {
+		a = attr_find(e->e_attrs, nssov_pam_svc_ad);
+		if (!a || attr_valfind( a,
+			SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+			SLAP_MR_VALUE_OF_SYNTAX,
+			&pi.svc, NULL, op->o_tmpmemctx )) {
+			rc = NSLCD_PAM_PERM_DENIED;
+			authzmsg = svcmsg;
+			goto finish;
+		}
+	}
+
+/* from passwd.c */
+#define UIDN_KEY	2
+
+	if (ni->ni_pam_min_uid || ni->ni_pam_max_uid) {
+		int id;
+		char *tmp;
+		nssov_mapinfo *mi = &ni->ni_maps[NM_passwd];
+		a = attr_find(e->e_attrs, mi->mi_attrs[UIDN_KEY].an_desc);
+		if (!a) {
+			rc = NSLCD_PAM_PERM_DENIED;
+			authzmsg = uidmsg;
+			goto finish;
+		}
+		id = (int)strtol(a->a_vals[0].bv_val,&tmp,0);
+		if (a->a_vals[0].bv_val[0] == '\0' || *tmp != '\0') {
+			rc = NSLCD_PAM_PERM_DENIED;
+			authzmsg = uidmsg;
+			goto finish;
+		}
+		if ((ni->ni_pam_min_uid && id < ni->ni_pam_min_uid) ||
+			(ni->ni_pam_max_uid && id > ni->ni_pam_max_uid)) {
+			rc = NSLCD_PAM_PERM_DENIED;
+			authzmsg = uidmsg;
+			goto finish;
+		}
+	}
+
+	if (ni->ni_pam_template_ad) {
+		a = attr_find(e->e_attrs, ni->ni_pam_template_ad);
+		if (a)
+			pi.uid = a->a_vals[0];
+		else if (!BER_BVISEMPTY(&ni->ni_pam_template))
+			pi.uid = ni->ni_pam_template;
+	}
+	rc = NSLCD_PAM_SUCCESS;
+
+finish:
+	WRITE_INT32(fp,NSLCD_VERSION);
+	WRITE_INT32(fp,NSLCD_ACTION_PAM_AUTHZ);
+	WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
+	WRITE_INT32(fp,rc);
+	WRITE_BERVAL(fp,&authzmsg);
+	WRITE_INT32(fp,NSLCD_RESULT_END);
+	if (e) {
+		be_entry_release_r(op, e);
+	}
+	switch (rc) {
+	case NSLCD_PAM_SUCCESS:
+		Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(): success\n" );
+		break;
+	case NSLCD_PAM_PERM_DENIED:
+		Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(): %s\n",
+			authzmsg.bv_val ? authzmsg.bv_val : "NULL" );
+		break;
+	default:
+		Debug(LDAP_DEBUG_TRACE,
+			"nssov_pam_authz(): permission denied, rc (%d)\n",
+			rc );
+	}
+	return 0;
+}
+
+static int pam_sess(nssov_info *ni,TFILE *fp,Operation *op,int action)
+{
+	int32_t tmpint32;
+	char svcc[256];
+	char uidc[32];
+	char ttyc[32];
+	char rhostc[256];
+	char ruserc[32];
+	char sessionID[64];
+	struct paminfo pi;
+	slap_callback cb = {0};
+	SlapReply rs = {REP_RESULT};
+	char timebuf[LDAP_LUTIL_GENTIME_BUFSIZE];
+	struct berval timestamp, bv[2], *nbv;
+	time_t stamp;
+	Modifications mod;
+	int rc = 0;
+
+	READ_STRING(fp,uidc);
+	pi.uid.bv_val = uidc;
+	pi.uid.bv_len = tmpint32;
+	READ_STRING(fp,svcc);
+	pi.svc.bv_val = svcc;
+	pi.svc.bv_len = tmpint32;
+	READ_STRING(fp,ruserc);
+	pi.ruser.bv_val = ruserc;
+	pi.ruser.bv_len = tmpint32;
+	READ_STRING(fp,rhostc);
+	pi.rhost.bv_val = rhostc;
+	pi.rhost.bv_len = tmpint32;
+	READ_STRING(fp,ttyc);
+	pi.tty.bv_val = ttyc;
+	pi.tty.bv_len = tmpint32;
+
+	if (action==NSLCD_ACTION_PAM_SESS_O) {
+		slap_op_time( &op->o_time, &op->o_tincr );
+		timestamp.bv_len = sizeof(timebuf);
+		timestamp.bv_val = timebuf;
+		stamp = op->o_time;
+		slap_timestamp( &stamp, &timestamp );
+	} else {
+		READ_STRING(fp,sessionID);
+		timestamp.bv_val = sessionID;
+		timestamp.bv_len = tmpint32;
+	}
+
+	rc = pam_uid2dn(ni, op, &pi);
+	if (rc) goto done;
+
+	Debug(LDAP_DEBUG_TRACE,"nssov_pam_sess_%c(%s)\n",
+		action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c', pi.dn.bv_val );
+
+	if (!ni->ni_pam_sessions) {
+		Debug(LDAP_DEBUG_TRACE,"nssov_pam_sess_%c(): %s\n",
+			action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c',
+			"pam session(s) not configured, ignored" );
+		rc = -1;
+		goto done;
+	}
+
+	{
+		int i, found=0;
+		for (i=0; !BER_BVISNULL(&ni->ni_pam_sessions[i]); i++) {
+			if (ni->ni_pam_sessions[i].bv_len != pi.svc.bv_len)
+				continue;
+			if (!strcasecmp(ni->ni_pam_sessions[i].bv_val, pi.svc.bv_val)) {
+				found = 1;
+				break;
+			}
+		}
+		if (!found) {
+			Debug(LDAP_DEBUG_TRACE,
+				"nssov_pam_sess_%c(): service(%s) not configured, ignored\n",
+				action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c',
+				pi.svc.bv_val );
+			rc = -1;
+			goto done;
+		}
+	}
+
+	bv[0].bv_len = timestamp.bv_len + global_host_bv.bv_len + pi.svc.bv_len +
+		pi.tty.bv_len + pi.ruser.bv_len + pi.rhost.bv_len + STRLENOF("    (@)");
+	bv[0].bv_val = op->o_tmpalloc( bv[0].bv_len+1, op->o_tmpmemctx );
+	sprintf(bv[0].bv_val, "%s %s %s %s (%s@%s)",
+		timestamp.bv_val, global_host_bv.bv_val, pi.svc.bv_val, pi.tty.bv_val,
+		pi.ruser.bv_val, pi.rhost.bv_val);
+
+	Debug(LDAP_DEBUG_TRACE, "nssov_pam_sess_%c(): loginStatus (%s) \n",
+			action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c', bv[0].bv_val );
+	
+	mod.sml_numvals = 1;
+	mod.sml_values = bv;
+	BER_BVZERO(&bv[1]);
+	attr_normalize( ad_loginStatus, bv, &nbv, op->o_tmpmemctx );
+	mod.sml_nvalues = nbv;
+	mod.sml_desc = ad_loginStatus;
+	mod.sml_op = action == NSLCD_ACTION_PAM_SESS_O ? LDAP_MOD_ADD :
+		LDAP_MOD_DELETE;
+	mod.sml_flags = SLAP_MOD_INTERNAL;
+	mod.sml_next = NULL;
+
+	cb.sc_response = slap_null_cb;
+	op->o_callback = &cb;
+	op->o_tag = LDAP_REQ_MODIFY;
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+	op->orm_modlist = &mod;
+	op->orm_no_opattrs = 1;
+	op->o_req_dn = pi.dn;
+	op->o_req_ndn = pi.dn;
+	if (op->o_bd->be_modify( op, &rs ) != LDAP_SUCCESS) {
+		Debug(LDAP_DEBUG_TRACE,
+			"nssov_pam_sess_%c(): modify op failed\n",
+			action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c' );
+		rc = -1;
+	}
+
+	if ( mod.sml_next ) {
+		slap_mods_free( mod.sml_next, 1 );
+	}
+	ber_bvarray_free_x( nbv, op->o_tmpmemctx );
+
+done:;
+
+	if (rc == 0) {
+		Debug(LDAP_DEBUG_TRACE,
+			"nssov_pam_sess_%c(): success\n",
+			action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c' );
+	}
+	WRITE_INT32(fp,NSLCD_VERSION);
+	WRITE_INT32(fp,action);
+	WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
+	if (action==NSLCD_ACTION_PAM_SESS_O)
+		WRITE_STRING(fp,timestamp.bv_val);
+	WRITE_INT32(fp,NSLCD_RESULT_END);
+	return 0;
+}
+
+int pam_sess_o(nssov_info *ni,TFILE *fp,Operation *op)
+{
+	return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_O);
+}
+
+int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op)
+{
+	return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_C);
+}
+
+int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid)
+{
+	struct berval npw;
+	int32_t tmpint32;
+	char uidc[32];
+	char svcc[256];
+	char ruserc[32];
+	char rhostc[256];
+	char ttyc[256];
+	int asroot;
+	char opwc[256];
+	char npwc[256];
+	struct paminfo pi;
+	int rc;
+
+	READ_STRING(fp,uidc);
+	pi.uid.bv_val = uidc;
+	pi.uid.bv_len = tmpint32;
+	READ_STRING(fp,svcc);
+	pi.svc.bv_val = svcc;
+	pi.svc.bv_len = tmpint32;
+	READ_STRING(fp,ruserc);
+	pi.ruser.bv_val = svcc;
+	pi.ruser.bv_len = tmpint32;
+	READ_STRING(fp,rhostc);
+	pi.rhost.bv_val = svcc;
+	pi.rhost.bv_len = tmpint32;
+	READ_STRING(fp,ttyc);
+	pi.tty.bv_val = svcc;
+	pi.tty.bv_len = tmpint32;
+	READ_INT32(fp, asroot);
+	READ_STRING(fp,opwc);
+	pi.pwd.bv_val = opwc;
+	pi.pwd.bv_len = tmpint32;
+	READ_STRING(fp,npwc);
+	npw.bv_val = npwc;
+	npw.bv_len = tmpint32;
+
+	rc = pam_uid2dn(ni, op, &pi);
+	if (rc) goto done;
+
+	Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(%s), %s %s\n",
+		pi.dn.bv_val ? pi.dn.bv_val : "NULL",
+		pi.uid.bv_val ? pi.uid.bv_val : "NULL",
+		asroot ? "as root" : "as user");
+
+	BER_BVZERO(&pi.msg);
+	pi.ispwdmgr = 0;
+
+	/* nssov_pam prohibits password mod */
+	if (!BER_BVISEMPTY(&ni->ni_pam_password_prohibit_message)) {
+		Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(): %s (%s)\n",
+			"password_prohibit_message",
+			ni->ni_pam_password_prohibit_message.bv_val );
+		ber_str2bv(ni->ni_pam_password_prohibit_message.bv_val, 0, 0, &pi.msg);
+		rc = NSLCD_PAM_PERM_DENIED;
+		goto done;
+	}
+
+	if (asroot) {
+		if (BER_BVISEMPTY(&ni->ni_pam_pwdmgr_dn)) {
+			Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(), %s\n",
+				"pwdmgr not configured" );
+			ber_str2bv("pwdmgr not configured", 0, 0, &pi.msg);
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto done;
+		}
+		if (calleruid != 0) {
+			Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(): %s\n",
+				"caller is not root" );
+			ber_str2bv("only root may do that", 0, 0, &pi.msg);
+			rc = NSLCD_PAM_PERM_DENIED;
+			goto done;
+		}
+		/* root user requesting pwmod */
+		pi.ispwdmgr = 1;
+	}
+
+	if (!pi.ispwdmgr && BER_BVISEMPTY(&pi.pwd)) {
+		Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(), %s\n",
+			"not pwdmgr and old pwd empty" );
+		ber_str2bv("must provide old password", 0, 0, &pi.msg);
+		rc = NSLCD_PAM_PERM_DENIED;
+		goto done;
+	}
+
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	struct berval bv;
+	SlapReply rs = {REP_RESULT};
+	slap_callback cb = {0};
+
+	ber_init_w_nullc(ber, LBER_USE_DER);
+	ber_printf(ber, "{");
+	if (!BER_BVISEMPTY(&pi.dn))
+		ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_ID,
+			&pi.dn);
+	/* supply old pwd whenever it's given */
+	if (!BER_BVISEMPTY(&pi.pwd))
+		ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD,
+			&pi.pwd);
+	if (!BER_BVISEMPTY(&npw))
+		ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW,
+			&npw);
+	ber_printf(ber, "N}");
+	ber_flatten2(ber, &bv, 0);
+	op->o_tag = LDAP_REQ_EXTENDED;
+	op->ore_reqoid = slap_EXOP_MODIFY_PASSWD;
+	op->ore_reqdata = &bv;
+
+	if (pi.ispwdmgr) {
+		/* root user changing end-user passwords */
+		op->o_dn = ni->ni_pam_pwdmgr_dn;
+		op->o_ndn = ni->ni_pam_pwdmgr_dn;
+	} else {
+		/* end-user self-pwd-mod */
+		op->o_dn = pi.dn;
+		op->o_ndn = pi.dn;
+	}
+	op->o_callback = &cb;
+	op->o_conn->c_authz_backend = op->o_bd;
+	cb.sc_response = slap_null_cb;
+	op->o_bd = frontendDB;
+	rc = op->o_bd->be_extended(op, &rs);
+	if (rs.sr_text)
+		ber_str2bv(rs.sr_text, 0, 0, &pi.msg);
+	if (rc == LDAP_SUCCESS)
+		rc = NSLCD_PAM_SUCCESS;
+	else
+		rc = NSLCD_PAM_PERM_DENIED;
+
+done:;
+	Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(), rc (%d)\n", rc );
+	WRITE_INT32(fp,NSLCD_VERSION);
+	WRITE_INT32(fp,NSLCD_ACTION_PAM_PWMOD);
+	WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
+	WRITE_INT32(fp,rc);
+	WRITE_BERVAL(fp,&pi.msg);
+	return 0;
+}
+
+int nssov_pam_init()
+{
+	int code = 0;
+	const char *text;
+	if (!ad_loginStatus)
+		code = slap_str2ad("loginStatus", &ad_loginStatus, &text);
+
+	return code;
+}
diff --git a/contrib/slapd-modules/nssov/passwd.c b/contrib/slapd-modules/nssov/passwd.c
new file mode 100644
index 0000000..137106d
--- /dev/null
+++ b/contrib/slapd-modules/nssov/passwd.c
@@ -0,0 +1,435 @@
+/* passwd.c - password lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* ( nisSchema.2.0 NAME 'posixAccount' SUP top AUXILIARY
+ *	 DESC 'Abstraction of an account with POSIX attributes'
+ *	 MUST ( cn $ uid $ uidNumber $ gidNumber $ homeDirectory )
+ *	 MAY ( userPassword $ loginShell $ gecos $ description ) )
+ */
+
+/* the basic search filter for searches */
+static struct berval passwd_filter = BER_BVC("(objectClass=posixAccount)");
+
+/* the attributes used in searches */
+static struct berval passwd_keys[] = {
+	BER_BVC("uid"),
+	BER_BVC("userPassword"),
+	BER_BVC("uidNumber"),
+	BER_BVC("gidNumber"),
+	BER_BVC("gecos"),
+	BER_BVC("cn"),
+	BER_BVC("homeDirectory"),
+	BER_BVC("loginShell"),
+	BER_BVC("objectClass"),
+	BER_BVNULL
+};
+
+#define UID_KEY	0
+#define	PWD_KEY	1
+#define UIDN_KEY	2
+#define GIDN_KEY	3
+#define GEC_KEY	4
+#define CN_KEY	5
+#define DIR_KEY	6
+#define SHL_KEY	7
+
+/* default values for attributes */
+static struct berval default_passwd_userPassword	= BER_BVC("*"); /* unmatchable */
+static struct berval default_passwd_homeDirectory	= BER_BVC("");
+static struct berval default_passwd_loginShell		= BER_BVC("");
+
+static struct berval shadow_passwd = BER_BVC("x");
+
+NSSOV_INIT(passwd)
+
+/*
+	 Checks to see if the specified name is a valid user name.
+
+	 This test is based on the definition from POSIX (IEEE Std 1003.1, 2004, 3.426 User Name
+	 and 3.276 Portable Filename Character Set):
+	 http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_426
+	 http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_276
+
+	 The standard defines user names valid if they contain characters from
+	 the set [A-Za-z0-9._-] where the hyphen should not be used as first
+	 character. As an extension this test allows the dolar '$' sign as the last
+	 character to support Samba special accounts.
+*/
+int isvalidusername(struct berval *bv)
+{
+	int i;
+	char *name = bv->bv_val;
+	if ((name==NULL)||(name[0]=='\0'))
+		return 0;
+	/* check first character */
+	if ( ! ( (name[0]>='A' && name[0] <= 'Z') ||
+					 (name[0]>='a' && name[0] <= 'z') ||
+					 (name[0]>='0' && name[0] <= '9') ||
+					 name[0]=='.' || name[0]=='_' ) )
+		return 0;
+	/* check other characters */
+	for (i=1;i<bv->bv_len;i++)
+	{
+		if ( name[i]=='$' )
+		{
+			/* if the char is $ we require it to be the last char */
+			if (name[i+1]!='\0')
+				return 0;
+		}
+		else if ( ! ( (name[i]>='A' && name[i] <= 'Z') ||
+									(name[i]>='a' && name[i] <= 'z') ||
+									(name[i]>='0' && name[i] <= '9') ||
+									name[i]=='.' || name[i]=='_'	|| name[i]=='-') )
+			return 0;
+	}
+	/* no test failed so it must be good */
+	return -1;
+}
+
+/* return 1 on success */
+int nssov_dn2uid(Operation *op,nssov_info *ni,struct berval *dn,struct berval *uid)
+{
+	nssov_mapinfo *mi = &ni->ni_maps[NM_passwd];
+	AttributeDescription *ad = mi->mi_attrs[UID_KEY].an_desc;
+	Entry *e;
+
+	/* check for empty string */
+	if (!dn->bv_len)
+		return 0;
+	/* try to look up uid within DN string */
+	if (!strncmp(dn->bv_val,ad->ad_cname.bv_val,ad->ad_cname.bv_len) &&
+		dn->bv_val[ad->ad_cname.bv_len] == '=')
+	{
+		struct berval bv, rdn;
+		dnRdn(dn, &rdn);
+		/* check if it is valid */
+		bv.bv_val = dn->bv_val + ad->ad_cname.bv_len + 1;
+		bv.bv_len = rdn.bv_len - ad->ad_cname.bv_len - 1;
+		if (!isvalidusername(&bv))
+			return 0;
+		ber_dupbv_x( uid, &bv, op->o_tmpmemctx );
+		return 1;
+	}
+	/* look up the uid from the entry itself */
+	if (be_entry_get_rw( op, dn, NULL, ad, 0, &e) == LDAP_SUCCESS)
+	{
+		Attribute *a = attr_find(e->e_attrs, ad);
+		if (a) {
+			ber_dupbv_x(uid, &a->a_vals[0], op->o_tmpmemctx);
+		}
+		be_entry_release_r(op, e);
+		if (a)
+			return 1;
+	}
+	return 0;
+}
+
+int nssov_name2dn_cb(Operation *op,SlapReply *rs)
+{
+	if ( rs->sr_type == REP_SEARCH )
+	{
+		struct berval *bv = op->o_callback->sc_private;
+		if ( !BER_BVISNULL(bv)) {
+			op->o_tmpfree( bv->bv_val, op->o_tmpmemctx );
+			BER_BVZERO(bv);
+			return LDAP_ALREADY_EXISTS;
+		}
+		ber_dupbv_x(bv, &rs->sr_entry->e_name, op->o_tmpmemctx);
+	}
+	return LDAP_SUCCESS;
+}
+
+int nssov_uid2dn(Operation *op,nssov_info *ni,struct berval *uid,struct berval *dn)
+{
+	nssov_mapinfo *mi = &ni->ni_maps[NM_passwd];
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf),fbuf};
+	slap_callback cb = {0};
+	SlapReply rs = {REP_RESULT};
+	Operation op2;
+	int rc;
+
+	/* if it isn't a valid username, just bail out now */
+	if (!isvalidusername(uid))
+		return 0;
+	/* we have to look up the entry */
+	nssov_filter_byid(mi,UID_KEY,uid,&filter);
+	BER_BVZERO(dn);
+	cb.sc_private = dn;
+	cb.sc_response = nssov_name2dn_cb;
+	op2 = *op;
+	op2.o_callback = &cb;
+	op2.o_req_dn = mi->mi_base;
+	op2.o_req_ndn = mi->mi_base;
+	op2.ors_scope = mi->mi_scope;
+	op2.ors_filterstr = filter;
+	op2.ors_filter = str2filter_x( op, filter.bv_val );
+	op2.ors_attrs = slap_anlist_no_attrs;
+	op2.ors_tlimit = SLAP_NO_LIMIT;
+	op2.ors_slimit = SLAP_NO_LIMIT;
+	rc = op2.o_bd->be_search( &op2, &rs );
+	filter_free_x( op, op2.ors_filter, 1 );
+	return rc == LDAP_SUCCESS && !BER_BVISNULL(dn);
+}
+
+/* the maximum number of uidNumber attributes per entry */
+#define MAXUIDS_PER_ENTRY 5
+
+NSSOV_CBPRIV(passwd,
+	char buf[256];
+	struct berval name;
+	struct berval id;);
+
+static struct berval shadowclass = BER_BVC("shadowAccount");
+
+static int write_passwd(nssov_passwd_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	struct berval tmparr[2], tmpuid[2];
+	char *tmp;
+	struct berval *names;
+	struct berval *uids;
+	struct berval passwd = {0};
+	gid_t gid;
+	struct berval gecos;
+	struct berval homedir;
+	struct berval shell;
+	Attribute *a;
+	int i,j;
+	int use_shadow = 0;
+	/* get the usernames for this entry */
+	if (BER_BVISNULL(&cbp->name))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[UID_KEY].an_desc);
+		if (!a)
+		{
+			Debug(LDAP_DEBUG_ANY,"passwd entry %s does not contain %s value\n",
+				entry->e_name.bv_val, cbp->mi->mi_attrs[UID_KEY].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		names = a->a_vals;
+	}
+	else
+	{
+		names=tmparr;
+		names[0]=cbp->name;
+		BER_BVZERO(&names[1]);
+	}
+	/* get the password for this entry */
+	a = attr_find(entry->e_attrs, slap_schema.si_ad_objectClass);
+	if ( a ) {
+		for ( i=0; i<a->a_numvals; i++) {
+			if ( bvmatch( &shadowclass, &a->a_nvals[i] )) {
+				use_shadow = 1;
+				break;
+			}
+		}
+	}
+	if ( use_shadow )
+	{
+		/* if the entry has a shadowAccount entry, point to that instead */
+		passwd = shadow_passwd;
+	}
+	else
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[PWD_KEY].an_desc);
+		if (a)
+			get_userpassword(&a->a_vals[0], &passwd);
+		if (BER_BVISNULL(&passwd))
+			passwd=default_passwd_userPassword;
+	}
+	/* get the uids for this entry */
+	if (BER_BVISNULL(&cbp->id))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[UIDN_KEY].an_desc);
+        if ( !a )
+		{
+			Debug(LDAP_DEBUG_ANY,"passwd entry %s does not contain %s value\n",
+				entry->e_name.bv_val, cbp->mi->mi_attrs[UIDN_KEY].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		uids = a->a_vals;
+	}
+	else
+	{
+		uids = tmpuid;
+		uids[0] = cbp->id;
+		BER_BVZERO(&uids[1]);
+	}
+	/* get the gid for this entry */
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[GIDN_KEY].an_desc);
+	if (!a)
+	{
+		Debug(LDAP_DEBUG_ANY,"passwd entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[GIDN_KEY].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	else if (a->a_numvals != 1)
+	{
+		Debug(LDAP_DEBUG_ANY,"passwd entry %s contains multiple %s values\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[GIDN_KEY].an_desc->ad_cname.bv_val );
+	}
+	gid=(gid_t)strtol(a->a_vals[0].bv_val,&tmp,0);
+	if ((a->a_vals[0].bv_val[0]=='\0')||(*tmp!='\0'))
+	{
+		Debug(LDAP_DEBUG_ANY,"passwd entry %s contains non-numeric %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[GIDN_KEY].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	/* get the gecos for this entry (fall back to cn) */
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[GEC_KEY].an_desc);
+	if (!a)
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[CN_KEY].an_desc);
+	if (!a || !a->a_numvals)
+	{
+		Debug(LDAP_DEBUG_ANY,"passwd entry %s does not contain %s or %s value\n",
+			entry->e_name.bv_val,
+			cbp->mi->mi_attrs[GEC_KEY].an_desc->ad_cname.bv_val,
+			cbp->mi->mi_attrs[CN_KEY].an_desc->ad_cname.bv_val);
+		return 0;
+	}
+	else if (a->a_numvals > 1)
+	{
+		Debug(LDAP_DEBUG_ANY,"passwd entry %s contains multiple %s or %s values\n",
+			entry->e_name.bv_val,
+			cbp->mi->mi_attrs[GEC_KEY].an_desc->ad_cname.bv_val,
+			cbp->mi->mi_attrs[CN_KEY].an_desc->ad_cname.bv_val);
+	}
+	gecos=a->a_vals[0];
+	/* get the home directory for this entry */
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[DIR_KEY].an_desc);
+	if (!a)
+	{
+		Debug(LDAP_DEBUG_ANY,"passwd entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[DIR_KEY].an_desc->ad_cname.bv_val );
+		homedir=default_passwd_homeDirectory;
+	}
+	else
+	{
+		if (a->a_numvals > 1)
+		{
+			Debug(LDAP_DEBUG_ANY,"passwd entry %s contains multiple %s values\n",
+				entry->e_name.bv_val, cbp->mi->mi_attrs[DIR_KEY].an_desc->ad_cname.bv_val );
+		}
+		homedir=a->a_vals[0];
+		if (homedir.bv_val[0]=='\0')
+			homedir=default_passwd_homeDirectory;
+	}
+	/* get the shell for this entry */
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[SHL_KEY].an_desc);
+	if (!a)
+	{
+		shell=default_passwd_loginShell;
+	}
+	else
+	{
+		if (a->a_numvals > 1)
+		{
+			Debug(LDAP_DEBUG_ANY,"passwd entry %s contains multiple %s values\n",
+				entry->e_name.bv_val, cbp->mi->mi_attrs[SHL_KEY].an_desc->ad_cname.bv_val );
+		}
+		shell=a->a_vals[0];
+		if (shell.bv_val[0]=='\0')
+			shell=default_passwd_loginShell;
+	}
+	/* write the entries */
+	for (i=0;!BER_BVISNULL(&names[i]);i++)
+	{
+		if (!isvalidusername(&names[i]))
+		{
+			Debug(LDAP_DEBUG_ANY,"nssov: passwd entry %s contains invalid user name: \"%s\"\n",
+				entry->e_name.bv_val,names[i].bv_val );
+		}
+		else
+		{
+			for (j=0;!BER_BVISNULL(&uids[j]);j++)
+			{
+				char *tmp;
+				uid_t uid;
+				uid = strtol(uids[j].bv_val, &tmp, 0);
+				if ( *tmp ) {
+					Debug(LDAP_DEBUG_ANY,"nssov: passwd entry %s contains non-numeric %s value: \"%s\"\n",
+						entry->e_name.bv_val, cbp->mi->mi_attrs[UIDN_KEY].an_desc->ad_cname.bv_val,
+						names[i].bv_val);
+					continue;
+				}
+				WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+				WRITE_BERVAL(cbp->fp,&names[i]);
+				WRITE_BERVAL(cbp->fp,&passwd);
+				WRITE_INT32(cbp->fp,uid);
+				WRITE_INT32(cbp->fp,gid);
+				WRITE_BERVAL(cbp->fp,&gecos);
+				WRITE_BERVAL(cbp->fp,&homedir);
+				WRITE_BERVAL(cbp->fp,&shell);
+			}
+		}
+	}
+	return 0;
+}
+
+NSSOV_CB(passwd)
+
+NSSOV_HANDLE(
+	passwd,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;
+	if (!isvalidusername(&cbp.name)) {
+		Debug(LDAP_DEBUG_ANY,"nssov_passwd_byname(%s): invalid user name\n",cbp.name.bv_val);
+		return -1;
+	}
+	BER_BVZERO(&cbp.id); ,
+	Debug(LDAP_DEBUG_TRACE,"nssov_passwd_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_PASSWD_BYNAME,
+	nssov_filter_byname(cbp.mi,UID_KEY,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	passwd,byuid,
+	uid_t uid;
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_INT32(fp,uid);
+	cbp.id.bv_val = cbp.buf;
+	cbp.id.bv_len = snprintf(cbp.buf,sizeof(cbp.buf),"%d",uid);
+	BER_BVZERO(&cbp.name);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_passwd_byuid(%s)\n",cbp.id.bv_val);,
+	NSLCD_ACTION_PASSWD_BYUID,
+	nssov_filter_byid(cbp.mi,UIDN_KEY,&cbp.id,&filter)
+)
+
+NSSOV_HANDLE(
+	passwd,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.name);
+	BER_BVZERO(&cbp.id);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_passwd_all()\n");,
+	NSLCD_ACTION_PASSWD_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/protocol.c b/contrib/slapd-modules/nssov/protocol.c
new file mode 100644
index 0000000..1d131ca
--- /dev/null
+++ b/contrib/slapd-modules/nssov/protocol.c
@@ -0,0 +1,156 @@
+/* protocol.c - network protocol lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/*
+ * ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* ( nisSchema.2.4 NAME 'ipProtocol' SUP top STRUCTURAL
+ *   DESC 'Abstraction of an IP protocol. Maps a protocol number
+ *         to one or more names. The distinguished value of the cn
+ *         attribute denotes the protocol's canonical name'
+ *   MUST ( cn $ ipProtocolNumber )
+ *    MAY description )
+ */
+
+/* the basic search filter for searches */
+static struct berval protocol_filter = BER_BVC("(objectClass=ipProtocol)");
+
+/* the attributes used in searches */
+static struct berval protocol_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("ipProtocolNumber"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(protocol)
+
+NSSOV_CBPRIV(protocol,
+	char buf[256];
+	struct berval name;
+	struct berval numb;);
+
+static int write_protocol(nssov_protocol_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	int i,numname,dupname,proto;
+	struct berval name,*names;
+	Attribute *a;
+	char *tmp;
+
+	/* get the most canonical name */
+	nssov_find_rdnval( &entry->e_nname, cbp->mi->mi_attrs[0].an_desc, &name );
+	/* get the other names for the protocol */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[0].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"protocol entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	names = a->a_vals;
+	numname = a->a_numvals;
+	/* if the name is not yet found, get the first entry from names */
+	if (BER_BVISNULL(&name)) {
+		name=names[0];
+		dupname = 0;
+	} else {
+		dupname = -1;
+		for (i=0; i<numname; i++) {
+			if ( bvmatch(&name, &a->a_nvals[i])) {
+				dupname = i;
+				break;
+			}
+		}
+	}
+	/* get the protocol number */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[1].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"protocol entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	} else if ( a->a_numvals > 1 ) {
+		Debug(LDAP_DEBUG_ANY,"protocol entry %s contains multiple %s values\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+	}
+	proto=(int)strtol(a->a_vals[0].bv_val,&tmp,0);
+	if (*tmp)
+	{
+		Debug(LDAP_DEBUG_ANY,"protocol entry %s contains non-numeric %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	/* write the entry */
+	WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+	WRITE_BERVAL(cbp->fp,&name);
+	if ( dupname >= 0 ) {
+		WRITE_INT32(cbp->fp,numname-1);
+	} else {
+		WRITE_INT32(cbp->fp,numname);
+	}
+	for (i=0;i<numname;i++) {
+		if (i == dupname) continue;
+		WRITE_BERVAL(cbp->fp,&names[i]);
+	}
+	WRITE_INT32(cbp->fp,proto);
+	return 0;
+}
+
+NSSOV_CB(protocol)
+
+NSSOV_HANDLE(
+	protocol,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	BER_BVZERO(&cbp.numb);
+	READ_STRING(fp,cbp.buf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_protocol_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_PROTOCOL_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	protocol,bynumber,
+	int protocol;
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_INT32(fp,protocol);
+	cbp.numb.bv_val = cbp.buf;
+	cbp.numb.bv_len = snprintf(cbp.buf,sizeof(cbp.buf),"%d",protocol);
+	BER_BVZERO(&cbp.name);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_protocol_bynumber(%s)\n",cbp.numb.bv_val);,
+	NSLCD_ACTION_PROTOCOL_BYNUMBER,
+	nssov_filter_byid(cbp.mi,1,&cbp.numb,&filter)
+)
+
+NSSOV_HANDLE(
+	protocol,all,
+	struct berval filter;
+	/* no parameters to read */,
+	Debug(LDAP_DEBUG_TRACE,"nssov_protocol_all()\n");,
+	NSLCD_ACTION_PROTOCOL_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/rpc.c b/contrib/slapd-modules/nssov/rpc.c
new file mode 100644
index 0000000..7d2045f
--- /dev/null
+++ b/contrib/slapd-modules/nssov/rpc.c
@@ -0,0 +1,158 @@
+/* rpc.c - rpc lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* ( nisSchema.2.5 NAME 'oncRpc' SUP top STRUCTURAL
+ *	 DESC 'Abstraction of an Open Network Computing (ONC)
+ *				 [RFC1057] Remote Procedure Call (RPC) binding.
+ *				 This class maps an ONC RPC number to a name.
+ *				 The distinguished value of the cn attribute denotes
+ *				 the RPC service's canonical name'
+ *	 MUST ( cn $ oncRpcNumber )
+ *	 MAY description )
+ */
+
+/* the basic search filter for searches */
+static struct berval rpc_filter = BER_BVC("(objectClass=oncRpc)");
+
+/* the attributes to request with searches */
+static struct berval rpc_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("oncRpcNumber"),
+	BER_BVNULL
+};
+
+NSSOV_INIT(rpc)
+
+NSSOV_CBPRIV(rpc,
+	char buf[256];
+	struct berval name;
+	struct berval numb;);
+
+/* write a single rpc entry to the stream */
+static int write_rpc(nssov_rpc_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	int i,numname,dupname,number;
+	struct berval name,*names;
+	Attribute *a;
+	char *tmp;
+
+	/* get the most canonical name */
+	nssov_find_rdnval( &entry->e_nname, cbp->mi->mi_attrs[0].an_desc, &name );
+	/* get the other names for the rpc */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[0].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"rpc entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	names = a->a_vals;
+	numname = a->a_numvals;
+	/* if the name is not yet found, get the first entry from names */
+	if (BER_BVISNULL(&name)) {
+		name=names[0];
+		dupname = 0;
+	} else {
+		dupname = -1;
+		for (i=0; i<numname; i++) {
+			if ( bvmatch(&name, &a->a_nvals[i])) {
+				dupname = i;
+				break;
+			}
+		}
+	}
+	/* get the rpc number */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[1].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"rpc entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	} else if ( a->a_numvals > 1 ) {
+		Debug(LDAP_DEBUG_ANY,"rpc entry %s contains multiple %s values\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+	}
+	number=(int)strtol(a->a_vals[0].bv_val,&tmp,0);
+	if (*tmp)
+	{
+		Debug(LDAP_DEBUG_ANY,"rpc entry %s contains non-numeric %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	/* write the entry */
+	WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+	WRITE_BERVAL(cbp->fp,&name);
+	if ( dupname >= 0 ) {
+		WRITE_INT32(cbp->fp,numname-1);
+	} else {
+		WRITE_INT32(cbp->fp,numname);
+	}
+	for (i=0;i<numname;i++) {
+		if (i == dupname) continue;
+		WRITE_BERVAL(cbp->fp,&names[i]);
+	}
+	WRITE_INT32(cbp->fp,number);
+	return 0;
+}
+
+NSSOV_CB(rpc)
+
+NSSOV_HANDLE(
+	rpc,byname,
+	char fbuf[1024];
+    struct berval filter = {sizeof(fbuf)};
+    filter.bv_val = fbuf;
+    BER_BVZERO(&cbp.numb);
+    READ_STRING(fp,cbp.buf);
+    cbp.name.bv_len = tmpint32;
+    cbp.name.bv_val = cbp.buf;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_rpc_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_RPC_BYNAME,
+	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	rpc,bynumber,
+	int number;
+	char fbuf[1024];
+    struct berval filter = {sizeof(fbuf)};
+    filter.bv_val = fbuf;
+	READ_INT32(fp,number);
+	cbp.numb.bv_val = cbp.buf;
+	cbp.numb.bv_len = snprintf(cbp.buf,sizeof(cbp.buf),"%d",number);
+	BER_BVZERO(&cbp.name);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_rpc_bynumber(%s)\n",cbp.numb.bv_val);,
+	NSLCD_ACTION_RPC_BYNUMBER,
+	nssov_filter_byid(cbp.mi,1,&cbp.numb,&filter)
+)
+
+NSSOV_HANDLE(
+	rpc,all,
+	struct berval filter;
+	/* no parameters to read */,
+	Debug(LDAP_DEBUG_TRACE,"nssov_rpc_all()\n");,
+	NSLCD_ACTION_RPC_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/service.c b/contrib/slapd-modules/nssov/service.c
new file mode 100644
index 0000000..d3704e4
--- /dev/null
+++ b/contrib/slapd-modules/nssov/service.c
@@ -0,0 +1,250 @@
+/* service.c - service lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* ( nisSchema.2.3 NAME 'ipService' SUP top STRUCTURAL
+ *	 DESC 'Abstraction an Internet Protocol service.
+ *				 Maps an IP port and protocol (such as tcp or udp)
+ *				 to one or more names; the distinguished value of
+ *				 the cn attribute denotes the service's canonical
+ *				 name'
+ *	 MUST ( cn $ ipServicePort $ ipServiceProtocol )
+ *	 MAY ( description ) )
+ */
+
+/* the basic search filter for searches */
+static struct berval service_filter = BER_BVC("(objectClass=ipService)");
+
+/* the attributes to request with searches */
+static struct berval service_keys[] = {
+	BER_BVC("cn"),
+	BER_BVC("ipServicePort"),
+	BER_BVC("ipServiceProtocol"),
+	BER_BVNULL
+};
+
+static int mkfilter_service_byname(nssov_mapinfo *mi,struct berval *name,
+								 struct berval *protocol,struct berval *buf)
+{
+	char buf2[1024],buf3[1024];
+	struct berval bv2 = {sizeof(buf2),buf2};
+	struct berval bv3 = {sizeof(buf3),buf3};
+
+	/* escape attributes */
+	if (nssov_escape(name,&bv2))
+		return -1;
+	if (!BER_BVISNULL(protocol)) {
+		if (nssov_escape(protocol,&bv3))
+			return -1;
+		if (bv2.bv_len + mi->mi_filter.bv_len + mi->mi_attrs[0].an_desc->ad_cname.bv_len +
+			bv3.bv_len + mi->mi_attrs[2].an_desc->ad_cname.bv_len + 9 > buf->bv_len )
+			return -1;
+		buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s)(%s=%s))",
+			mi->mi_filter.bv_val,
+			mi->mi_attrs[0].an_desc->ad_cname.bv_val, bv2.bv_val,
+			mi->mi_attrs[2].an_desc->ad_cname.bv_val, bv3.bv_val );
+	} else {
+		if (bv2.bv_len + mi->mi_filter.bv_len + mi->mi_attrs[0].an_desc->ad_cname.bv_len + 6 >
+			buf->bv_len )
+			return -1;
+		buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
+			mi->mi_filter.bv_val, mi->mi_attrs[0].an_desc->ad_cname.bv_val,
+			bv2.bv_val );
+	}
+	return 0;
+}
+
+static int mkfilter_service_bynumber(nssov_mapinfo *mi,struct berval *numb,
+								 struct berval *protocol,struct berval *buf)
+{
+	char buf2[1024];
+	struct berval bv2 = {sizeof(buf2),buf2};
+
+	/* escape attribute */
+	if (!BER_BVISNULL(protocol)) {
+		if (nssov_escape(protocol,&bv2))
+			return -1;
+		if (numb->bv_len + mi->mi_filter.bv_len + mi->mi_attrs[1].an_desc->ad_cname.bv_len +
+			bv2.bv_len + mi->mi_attrs[2].an_desc->ad_cname.bv_len + 9 > buf->bv_len )
+			return -1;
+		buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s)(%s=%s))",
+			mi->mi_filter.bv_val,
+			mi->mi_attrs[1].an_desc->ad_cname.bv_val, numb->bv_val,
+			mi->mi_attrs[2].an_desc->ad_cname.bv_val, bv2.bv_val );
+	} else {
+		if (numb->bv_len + mi->mi_filter.bv_len + mi->mi_attrs[1].an_desc->ad_cname.bv_len + 6 >
+			buf->bv_len )
+			return -1;
+		buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
+			mi->mi_filter.bv_val, mi->mi_attrs[1].an_desc->ad_cname.bv_val,
+			numb->bv_val );
+	}
+	return 0;
+}
+
+NSSOV_INIT(service)
+
+NSSOV_CBPRIV(service,
+	char nbuf[256];
+	char pbuf[256];
+	struct berval name;
+	struct berval prot;);
+
+static int write_service(nssov_service_cbp *cbp,Entry *entry)
+{
+	int32_t tmpint32;
+	struct berval name,*names,*protos;
+	struct berval tmparr[2];
+	Attribute *a;
+	char *tmp;
+	int port;
+	int i,numname,dupname,numprot;
+
+	/* get the most canonical name */
+	nssov_find_rdnval( &entry->e_nname, cbp->mi->mi_attrs[0].an_desc, &name );
+	/* get the other names for the rpc */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[0].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"service entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	names = a->a_vals;
+	numname = a->a_numvals;
+	/* if the name is not yet found, get the first entry from names */
+	if (BER_BVISNULL(&name)) {
+		name=names[0];
+		dupname = 0;
+	} else {
+		dupname = -1;
+		for (i=0; i<numname; i++) {
+			if ( bvmatch(&name, &a->a_nvals[i])) {
+				dupname = i;
+				break;
+			}
+		}
+	}
+	/* get the service number */
+	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[1].an_desc );
+	if ( !a || !a->a_vals )
+	{
+		Debug(LDAP_DEBUG_ANY,"service entry %s does not contain %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	} else if ( a->a_numvals > 1 ) {
+		Debug(LDAP_DEBUG_ANY,"service entry %s contains multiple %s values\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+	}
+	port=(int)strtol(a->a_vals[0].bv_val,&tmp,0);
+	if (*tmp)
+	{
+		Debug(LDAP_DEBUG_ANY,"service entry %s contains non-numeric %s value\n",
+			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
+		return 0;
+	}
+	/* get protocols */
+	if (BER_BVISNULL(&cbp->prot))
+	{
+		a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[2].an_desc );
+		if ( !a || !a->a_vals )
+		{
+			Debug(LDAP_DEBUG_ANY,"service entry %s does not contain %s value\n",
+				entry->e_name.bv_val, cbp->mi->mi_attrs[2].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		protos = a->a_vals;
+		numprot = a->a_numvals;
+	}
+	else
+	{
+		protos=tmparr;
+		protos[0]=cbp->prot;
+		BER_BVZERO(&protos[1]);
+		numprot = 1;
+	}
+	/* write the entries */
+	for (i=0;i<numprot;i++)
+	{
+		int j;
+		WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+		WRITE_BERVAL(cbp->fp,&name);
+		if ( dupname >= 0 ) {
+			WRITE_INT32(cbp->fp,numname-1);
+		} else {
+			WRITE_INT32(cbp->fp,numname);
+		}
+		for (j=0;j<numname;j++) {
+			if (j == dupname) continue;
+			WRITE_BERVAL(cbp->fp,&names[j]);
+		}
+		WRITE_INT32(cbp->fp,port);
+		WRITE_BERVAL(cbp->fp,&protos[i]);
+	}
+	return 0;
+}
+
+NSSOV_CB(service)
+
+NSSOV_HANDLE(
+	service,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.nbuf);
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.nbuf;
+	READ_STRING(fp,cbp.pbuf);
+	cbp.prot.bv_len = tmpint32;
+	cbp.prot.bv_val = tmpint32 ? cbp.pbuf : NULL;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_service_byname(%s,%s)\n",cbp.name.bv_val,cbp.prot.bv_val ? cbp.prot.bv_val : "");,
+	NSLCD_ACTION_SERVICE_BYNAME,
+	mkfilter_service_byname(cbp.mi,&cbp.name,&cbp.prot,&filter)
+)
+
+NSSOV_HANDLE(
+	service,bynumber,
+	int number;
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_INT32(fp,number);
+	cbp.name.bv_val = cbp.nbuf;
+	cbp.name.bv_len = snprintf(cbp.nbuf,sizeof(cbp.nbuf),"%d",number);
+	READ_STRING(fp,cbp.pbuf);
+	cbp.prot.bv_len = tmpint32;
+	cbp.prot.bv_val = tmpint32 ? cbp.pbuf : NULL;,
+	Debug(LDAP_DEBUG_TRACE,"nssov_service_bynumber(%s,%s)\n",cbp.name.bv_val,cbp.prot.bv_val);,
+	NSLCD_ACTION_SERVICE_BYNUMBER,
+	mkfilter_service_bynumber(cbp.mi,&cbp.name,&cbp.prot,&filter)
+)
+
+NSSOV_HANDLE(
+	service,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.prot);,
+	Debug(LDAP_DEBUG_TRACE,"nssov_service_all()\n");,
+	NSLCD_ACTION_SERVICE_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/shadow.c b/contrib/slapd-modules/nssov/shadow.c
new file mode 100644
index 0000000..477ce50
--- /dev/null
+++ b/contrib/slapd-modules/nssov/shadow.c
@@ -0,0 +1,257 @@
+/* shadow.c - shadow account lookup routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 
+ *
+ * Copyright 2008-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This code references portions of the nss-ldapd package
+ * written by Arthur de Jong. The nss-ldapd code was forked
+ * from the nss-ldap library written by Luke Howard.
+ */
+
+#include "nssov.h"
+
+/* ( nisSchema.2.1 NAME 'shadowAccount' SUP top AUXILIARY
+ *	 DESC 'Additional attributes for shadow passwords'
+ *	 MUST uid
+ *	 MAY ( userPassword $ shadowLastChange $ shadowMin
+ *				 shadowMax $ shadowWarning $ shadowInactive $
+ *				 shadowExpire $ shadowFlag $ description ) )
+ */
+
+/* the basic search filter for searches */
+static struct berval shadow_filter = BER_BVC("(objectClass=shadowAccount)");
+
+/* the attributes to request with searches */
+static struct berval shadow_keys[] = {
+	BER_BVC("uid"),
+	BER_BVC("userPassword"),
+	BER_BVC("shadowLastChange"),
+	BER_BVC("shadowMin"),
+	BER_BVC("shadowMax"),
+	BER_BVC("shadowWarning"),
+	BER_BVC("shadowInactive"),
+	BER_BVC("shadowExpire"),
+	BER_BVC("shadowFlag"),
+	BER_BVNULL
+};
+
+#define UID_KEY	0
+#define PWD_KEY	1
+#define CHG_KEY	2
+#define MIN_KEY	3
+#define MAX_KEY 4
+#define WRN_KEY 5
+#define INA_KEY 6
+#define EXP_KEY 7
+#define FLG_KEY 8
+
+/* default values for attributes */
+static struct berval default_shadow_userPassword		 = BER_BVC("*"); /* unmatchable */
+static int default_nums[] = { 0,0,
+	-1, /* LastChange */
+	-1, /* Min */
+	-1, /* Max */
+	-1, /* Warning */
+	-1, /* Inactive */
+	-1, /* Expire */
+	0 /* Flag */
+};
+
+NSSOV_INIT(shadow)
+
+static long to_date(struct berval *date,AttributeDescription *attr)
+{
+	long value;
+	char *tmp;
+	/* do some special handling for date values on AD */
+	if (strcasecmp(attr->ad_cname.bv_val,"pwdLastSet")==0)
+	{
+		char buffer[8];
+		size_t l;
+		/* we expect an AD 64-bit datetime value;
+			 we should do date=date/864000000000-134774
+			 but that causes problems on 32-bit platforms,
+			 first we divide by 1000000000 by stripping the
+			 last 9 digits from the string and going from there */
+		l=date->bv_len-9;
+		if (l<1 || l>(sizeof(buffer)-1))
+			return 0; /* error */
+		strncpy(buffer,date->bv_val,l);
+		buffer[l]='\0';
+		value=strtol(buffer,&tmp,0);
+		if ((buffer[0]=='\0')||(*tmp!='\0'))
+		{
+			Debug(LDAP_DEBUG_ANY,"shadow entry contains non-numeric %s value\n",
+				attr->ad_cname.bv_val );
+			return 0;
+		}
+		return value/864-134774;
+		/* note that AD does not have expiry dates but a lastchangeddate
+			 and some value that needs to be added */
+	}
+	value=strtol(date->bv_val,&tmp,0);
+	if ((date->bv_val[0]=='\0')||(*tmp!='\0'))
+	{
+		Debug(LDAP_DEBUG_ANY,"shadow entry contains non-numeric %s value\n",
+			attr->ad_cname.bv_val );
+		return 0;
+	}
+	return value;
+}
+
+#ifndef UF_DONT_EXPIRE_PASSWD
+#define UF_DONT_EXPIRE_PASSWD 0x10000
+#endif
+
+#define GET_OPTIONAL_LONG(var,key) \
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[key].an_desc); \
+	if ( !a || BER_BVISNULL(&a->a_vals[0])) \
+		var = default_nums[key]; \
+	else \
+	{ \
+		if (a->a_numvals > 1) \
+		{ \
+			Debug(LDAP_DEBUG_ANY,"shadow entry %s contains multiple %s values\n", \
+				entry->e_name.bv_val, cbp->mi->mi_attrs[key].an_desc->ad_cname.bv_val); \
+		} \
+		var=strtol(a->a_vals[0].bv_val,&tmp,0); \
+		if ((a->a_vals[0].bv_val[0]=='\0')||(*tmp!='\0')) \
+		{ \
+			Debug(LDAP_DEBUG_ANY,"shadow entry %s contains non-numeric %s value\n", \
+				entry->e_name.bv_val, cbp->mi->mi_attrs[key].an_desc->ad_cname.bv_val); \
+			return 0; \
+		} \
+	}
+
+#define GET_OPTIONAL_DATE(var,key) \
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[key].an_desc); \
+	if ( !a || BER_BVISNULL(&a->a_vals[0])) \
+		var = default_nums[key]; \
+	else \
+	{ \
+		if (a->a_numvals > 1) \
+		{ \
+			Debug(LDAP_DEBUG_ANY,"shadow entry %s contains multiple %s values\n", \
+				entry->e_name.bv_val, cbp->mi->mi_attrs[key].an_desc->ad_cname.bv_val); \
+		} \
+		var=to_date(&a->a_vals[0],cbp->mi->mi_attrs[key].an_desc); \
+	}
+
+NSSOV_CBPRIV(shadow,
+	char buf[256];
+	struct berval name;);
+
+static int write_shadow(nssov_shadow_cbp *cbp,Entry *entry)
+{
+	struct berval tmparr[2];
+	struct berval *names;
+	Attribute *a;
+	char *tmp;
+	struct berval passwd = {0};
+	long lastchangedate;
+	long mindays;
+	long maxdays;
+	long warndays;
+	long inactdays;
+	long expiredate;
+	unsigned long flag;
+	int i;
+	int32_t tmpint32;
+	/* get username */
+	if (BER_BVISNULL(&cbp->name))
+	{
+		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[UID_KEY].an_desc);
+		if (!a)
+		{
+			Debug(LDAP_DEBUG_ANY,"shadow entry %s does not contain %s value\n",
+				entry->e_name.bv_val, cbp->mi->mi_attrs[UID_KEY].an_desc->ad_cname.bv_val );
+			return 0;
+		}
+		names = a->a_vals;
+	}
+	else
+	{
+		names=tmparr;
+		names[0]=cbp->name;
+		BER_BVZERO(&names[1]);
+	}
+	/* get password */
+	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[PWD_KEY].an_desc);
+	if ( a )
+		get_userpassword(&a->a_vals[0], &passwd);
+	if (BER_BVISNULL(&passwd))
+		passwd=default_shadow_userPassword;
+	/* get lastchange date */
+	GET_OPTIONAL_DATE(lastchangedate,CHG_KEY);
+	/* get mindays */
+	GET_OPTIONAL_LONG(mindays,MIN_KEY);
+	/* get maxdays */
+	GET_OPTIONAL_LONG(maxdays,MAX_KEY);
+	/* get warndays */
+	GET_OPTIONAL_LONG(warndays,WRN_KEY);
+	/* get inactdays */
+	GET_OPTIONAL_LONG(inactdays,INA_KEY);
+	/* get expire date */
+	GET_OPTIONAL_LONG(expiredate,EXP_KEY);
+	/* get flag */
+	GET_OPTIONAL_LONG(flag,FLG_KEY);
+	/* if we're using AD handle the flag specially */
+	if (strcasecmp(cbp->mi->mi_attrs[CHG_KEY].an_desc->ad_cname.bv_val,"pwdLastSet")==0)
+	{
+		if (flag&UF_DONT_EXPIRE_PASSWD)
+			maxdays=99999;
+		flag=0;
+	}
+	/* write the entries */
+	for (i=0;!BER_BVISNULL(&names[i]);i++)
+	{
+		WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
+		WRITE_BERVAL(cbp->fp,&names[i]);
+		WRITE_BERVAL(cbp->fp,&passwd);
+		WRITE_INT32(cbp->fp,lastchangedate);
+		WRITE_INT32(cbp->fp,mindays);
+		WRITE_INT32(cbp->fp,maxdays);
+		WRITE_INT32(cbp->fp,warndays);
+		WRITE_INT32(cbp->fp,inactdays);
+		WRITE_INT32(cbp->fp,expiredate);
+		WRITE_INT32(cbp->fp,flag);
+	}
+	return 0;
+}
+
+NSSOV_CB(shadow)
+
+NSSOV_HANDLE(
+	shadow,byname,
+	char fbuf[1024];
+	struct berval filter = {sizeof(fbuf)};
+	filter.bv_val = fbuf;
+	READ_STRING(fp,cbp.buf);,
+	cbp.name.bv_len = tmpint32;
+	cbp.name.bv_val = cbp.buf;
+	Debug(LDAP_DEBUG_ANY,"nssov_shadow_byname(%s)\n",cbp.name.bv_val);,
+	NSLCD_ACTION_SHADOW_BYNAME,
+	nssov_filter_byname(cbp.mi,UID_KEY,&cbp.name,&filter)
+)
+
+NSSOV_HANDLE(
+	shadow,all,
+	struct berval filter;
+	/* no parameters to read */
+	BER_BVZERO(&cbp.name);,
+	Debug(LDAP_DEBUG_ANY,"nssov_shadow_all()\n");,
+	NSLCD_ACTION_SHADOW_ALL,
+	(filter=cbp.mi->mi_filter,0)
+)
diff --git a/contrib/slapd-modules/nssov/slapo-nssov.5 b/contrib/slapd-modules/nssov/slapo-nssov.5
new file mode 100644
index 0000000..6128de9
--- /dev/null
+++ b/contrib/slapd-modules/nssov/slapo-nssov.5
@@ -0,0 +1,316 @@
+.TH SLAPO-NSSOV 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 1998-2022 The OpenLDAP Foundation, All Rights Reserved.
+.\" Copying restrictions apply.  See the COPYRIGHT file.
+.\" $OpenLDAP$
+.SH NAME
+slapo-nssov \- NSS and PAM requests through a local Unix Domain socket
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+The
+.B nssov 
+overlay to
+.BR slapd (8)
+services NSS and PAM requests through a local Unix Domain socket. 
+It uses the same IPC protocol as Arthur de Jong's nss-pam-ldapd.
+An extract of the nss-ldapd source is included along with the
+nssov source code to allow the overlay to communicate with the
+nss-pam-ldapd client stubs.
+.LP
+Using a separate IPC protocol for NSS and PAM requests eliminates the
+libldap dependencies/clashes that the current pam_ldap/nss_ldap solutions
+all suffer from. Both the original nss-ldapd and this nssov solution
+are free from these library issues.
+.LP
+Unlike nss-pam-ldapd, since this overlay executes inside slapd it allows for
+the possibility of sophisticated caching, without any of the weaknesses of
+nscd and other related caching solutions. E.g., a remote LDAP database can
+be accessed using back-ldap with proxy caching (see
+.BR slapd-ldap (5)
+and
+.BR slapo-pcache (5)
+) to leverage back-ldap's
+connection pooling as well as pcache's persistent caching, to provide
+high performance and a measure of support for disconnected operation.
+Alternatively, cache considerations can be completely eliminated by running
+a regular database with syncrepl to maintain synchronization with a remote
+LDAP database.
+.LP
+Another major benefit of nssov is that it allows all security policy to be 
+administered centrally via LDAP, instead of having fragile rules scattered 
+across multiple flat files. As such, there is no client-side configuration at 
+all for the NSS/PAM stub libraries. (The stubs talk to the server via a Unix
+domain socket whose path is hardcoded to NSLCDPATH). As a side benefit,
+this can finally eliminate the perpetual confusion between OpenLDAP's
+ldap.conf file in ETCDIR/ldap.conf and the similarly named files typically
+used by pam_ldap and nss_ldap.
+.LP
+User authentication is performed by internal simple Binds. User authorization 
+leverages the slapd ACL engine, which offers much more power and flexibility 
+than the simple group/hostname checks in the old pam_ldap code.
+.LP
+To use this code, you will need the client-side stub library from
+nss-pam-ldapd.  You can get it from:
+http://arthurdejong.org/nss-pam-ldapd
+You will not need the nslcd daemon; this overlay replaces that part.
+To disable building of the nslcd daemon in nss-pam-ldapd, add the
+--disable-nslcd option to the nss-pam-ldapd configure script. You
+should already be familiar with the RFC2307 and RFC2307bis schema
+to use this overlay.  See the nss-pam-ldapd README for more information
+on the schema and which features are supported.
+.LP
+You will also need to include the nis.schema in your slapd configuration
+for RFC2307 support. If you wish to use RFC2307bis you will need a slightly
+different schema. You will also need the ldapns.schema for PAM authorization
+management.
+.LP
+You must select
+.B ldap
+in the appropriate services in
+.I /etc/nsswitch.conf
+in order for these NSS features to take effect. Likewise, you must
+enable
+.B pam_ldap
+for the authenticate, account, session, and password services in
+.I /etc/pam.conf
+or
+.I /etc/pam.d
+for these PAM features to take effect.
+
+.TP
+.B overlay nssov
+This directive adds the nssov overlay to the current backend.
+.TP
+.B nssov-ssd <service> <url>
+This directive configures a Service Search Descriptor (SSD) for each NSS
+service that will be used.  The <service> may be one of
+.RS
+.nf
+    aliases
+    ethers
+    group
+    hosts
+    netgroup
+    networks
+    passwd
+    protocols
+    rpc
+    services
+    shadow
+.fi
+.RE
+and the <url> must be of the form
+.RS
+.TP
+.B ldap:///[<basedn>][??[<scope>][?<filter>]]
+.RE
+The 
+.B <basedn> 
+will default to the first suffix of the current database.
+The 
+.B <scope> 
+defaults to "subtree". The default 
+.B <filter> 
+depends on which service is being used.
+.TP
+.B nssov-map <service> <orig> <new>
+If the local database is actually a proxy to a foreign LDAP server, some
+mapping of schema may be needed. This directive allows some simple attribute
+substitutions to be performed. See the 
+.B nss-ldapd/README 
+for the original attribute names used in this code.
+.TP
+.B nssov-pam <option> [...]
+This directive determines a number of PAM behaviors. Multiple options may
+be used at once, and available levels are:
+.RS
+.RS
+.PD 0
+.TP
+.B userhost
+check host attribute in user entry for authorization
+.TP
+.B userservice
+check authorizedService attribute in user entry for authorization
+.TP
+.B usergroup
+check that user is a member of specific group for authorization
+.TP
+.B hostservice
+check authorizedService attribute in host entry for authorization
+.TP
+.B authz2dn
+use authz-regexp mapping to map uid to LDAP DN
+.TP
+.B uid2dn
+use NSS passwd SSD to map uid to LDAP DN
+.PD
+.RE
+
+Setting the
+.BR userhost ,
+.BR userservice ,
+and
+.B usergroup
+options duplicates the original pam_ldap authorization behavior.
+
+The recommended approach is to use
+.B hostservice
+instead. In this case, ipHost entries must be created for all hosts
+being managed, and they must also have the authorizedServiceObject
+class to allow authorizedService attributes to be used. Also the
+NSS host SSD must be configured so that ipHost entries can be found.
+Authorization is checked by performing an LDAP Compare operation
+looking for the PAM service name in the authorizedService attribute.
+.B slapd
+ACLs should be set to grant or deny
+.B Compare
+privilege to the appropriate users or groups as desired.
+
+If the
+.B authz2dn
+option is set then authz-regexp mappings will be used to map the
+PAM username to an LDAP DN. The authentication DN will be of the
+form
+.RS
+.B cn=<service>+uid=<user>,cn=<hostname>,cn=pam,cn=auth
+.RE
+
+If no mapping is found for this authentication DN, then this
+mapping will be ignored.
+
+If the
+.B uid2dn
+option is set then the NSS passwd SSD will be used to map the
+PAM username to an LDAP DN. The passwd SSD must have already been
+configured for this mapping to succeed.
+
+If neither the authz2dn nor the uid2dn mapping succeeds, the module
+will return a PAM_USER_UNKNOWN failure code. If both options are set,
+the authz mapping is attempted first; if it succeeds the uid2dn mapping
+will be skipped.
+
+By default only the
+.B uid2dn
+option is set.
+.RE
+.TP
+.B nssov-pam-defhost <hostname>
+Specify a default hostname to check if an ipHost entry for the current
+hostname cannot be found. This setting is only relevant if the 
+.B hostservice
+option has been set.
+.TP
+.B nssov-pam-group-dn <DN>
+Specify the DN of an LDAP group to check for authorization. The LDAP user
+must be a member of this group for the login to be allowed. There is no
+default value. This setting is only relevant if the
+.B usergroup
+option has been set.
+.TP
+.B nssov-pam-group-ad <attribute>
+Specify the attribute to use for group membership checks.
+There is no default value.  This setting is only relevant if the
+.B usergroup
+option has been set.
+.TP
+.B nssov-pam-min-uid <integer>
+Specify a minimum uid that is allowed to login. Users with a uidNumber
+lower than this value will be denied access. The default is zero, which
+disables this setting.
+.TP
+.B nssov-pam-max-uid <integer>
+Specify a maximum uid that is allowed to login. Users with a uidNumber
+higher than this value will be denied access. The default is zero, which
+disables this setting.
+.TP
+.B nssov-pam-template-ad <attribute>
+Specify an attribute to check in a user's entry for a template login name.
+The template login feature is used by FreeBSD's PAM framework. It can be
+viewed as a form of proxying, where a user can authenticate with one
+username/password pair, but is assigned the identity and credentials of
+the template user. This setting is disabled by default.
+.TP
+.B nssov-pam-template <name>
+Specify a default username to be used if no template attribute is found
+in the user's entry. The
+.B nssov-pam-template-ad
+directive must be configured for this setting to have any effect.
+.TP
+.B nssov-pam-session <service>
+Specify a PAM service name whose sessions will be recorded. For the
+configured services, logins will be recorded in the
+.TP
+.B nssov-pam-password-prohibit-message <message>
+Disable password change service and return the specified message to
+users.
+.TP
+.B nssov-pam-pwdmgr-dn <dn>
+Specify the dn of the password manager.
+.TP
+.B nssov-pam-pwdmgr-pwd <pwd>
+Specify the pwd of the password manager.
+.TP
+.B loginStatus
+operational attribute of the user's entry. The attribute's values are
+of the form
+.RS
+.RS
+.B <generalizedTime> <host> <service> <tty> (<ruser@rhost>)
+.RE
+.RE
+Upon logout the corresponding value will be deleted. This feature allows
+a single LDAP Search to be used to check which users are logged in across
+all the hosts of a network. The rootdn of the database is used to perform
+the updates of the loginStatus attribute, so a rootdn must already be
+configured for this feature to work. By default no services are configured.
+.LP
+The PAM functions support LDAP Password Policy as well. If the password
+policy overlay is in use (see
+.BR slapo-ppolicy (5)),
+policy
+information (e.g. password expiration, password quality, etc.)
+may be returned to the PAM client as a result of authentication,
+account management, and password modification requests.
+
+The overlay also supports dynamic configuration in cn=config. An example
+of the config entry is
+.LP 
+.RS
+.nf
+    dn: olcOverlay={0}nssov,ocDatabase={1}mdb,cn=config
+    objectClass: olcOverlayConfig
+    objectClass: olcNssOvConfig
+    olcOverlay: {0}nssov
+    olcNssSsd: passwd ldap:///ou=users,dc=example,dc=com??one
+    olcNssMap: passwd uid accountName
+    olcNssPam: hostservice uid2dn
+    olcNssPamDefHost: defaulthost
+    olcNssPamMinUid: 500
+    olcNssPamMaxUid: 32000
+    olcNssPamSession: login
+    olcNssPamSession: sshd
+.fi
+.RE
+.LP
+which enables the passwd service, and uses the accountName attribute to
+fetch what is usually retrieved from the uid attribute. It also enables
+some PAM authorization controls, and specifies that the PAM
+.B login
+and
+.B sshd
+services should have their logins recorded.
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR slapd\-config (5),
+.BR slapd\-ldap (5),
+.BR slapo\-pcache (5),
+.BR slapo\-ppolicy (5),
+.BR slapd (8).
+.SH AUTHOR
+Howard Chu, inspired by nss-ldapd by Arthur de Jong and pam_ldap by Luke Howard
+Enhancements by Ted C. Cheng, Symas Corp.
diff --git a/contrib/slapd-modules/passwd/Makefile b/contrib/slapd-modules/passwd/Makefile
new file mode 100644
index 0000000..6346496
--- /dev/null
+++ b/contrib/slapd-modules/passwd/Makefile
@@ -0,0 +1,70 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = pw-kerberos.la pw-netscape.la pw-radius.la pw-apr1.la
+MANPAGES = slapd-pw-radius.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+pw-kerberos.la:	kerberos.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? -lkrb5
+
+pw-netscape.la:	netscape.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $?
+
+pw-radius.la:	radius.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? -lradius
+
+pw-apr1.la:	apr1.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $?
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/passwd/README b/contrib/slapd-modules/passwd/README
new file mode 100644
index 0000000..069555f
--- /dev/null
+++ b/contrib/slapd-modules/passwd/README
@@ -0,0 +1,69 @@
+This directory contains native slapd plugins for password mechanisms that
+are not actively supported by the project. Currently this includes the
+Kerberos, Netscape MTA-MD5 and RADIUS password mechanisms. The Apache
+APR1 MD5 and BSD/Paul Henning Kamp MD5 mechanisms are also included.
+
+To use the Kerberos plugin, add:
+
+moduleload pw-kerberos.so
+
+to your slapd configuration file.
+
+To use the Netscape plugin, add:
+
+moduleload pw-netscape.so
+
+to your slapd configuration file.
+
+To use the APR1/BSD/MD5 plugin, add:
+
+moduleload pw-apr1.so
+
+to your slapd configuration file.
+
+To use the RADIUS plugin, add:
+
+moduleload pw-radius.so
+
+to your slapd configuration file; optionally, the path to a configuration
+file can be appended in the form
+
+moduleload pw-radius.so config="/etc/radius.conf"
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+gcc -shared -I../../../include -Wall -g -DHAVE_KRB5 -o pw-kerberos.so kerberos.c
+
+Replace HAVE_KRB5 with HAVE_KRB4 if you want to use Kerberos IV.
+If your Kerberos header files are not in the C compiler's
+default path, you will need to add a "-I" directive for that as well.
+
+The corresponding command for the Netscape plugin would be:
+
+gcc -shared -I../../../include -Wall -g -o pw-netscape.so netscape.c
+
+The corresponding command for the RADIUS plugin would be:
+
+gcc -shared -I../../../include -Wall -g -o pw-radius.so radius.c -lradius
+
+(Actually, you might want to statically link the RADIUS client library
+libradius.a into the module).
+
+The corresponding command for the APR1 plugin would be:
+
+gcc -shared -I../../../include -Wall -g -o pw-apr1.so apr1.c
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2004-2022 The OpenLDAP Foundation.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/passwd/apr1-atol.pl b/contrib/slapd-modules/passwd/apr1-atol.pl
new file mode 100644
index 0000000..d6eaee7
--- /dev/null
+++ b/contrib/slapd-modules/passwd/apr1-atol.pl
@@ -0,0 +1,29 @@
+#!/usr/bin/perl -w

+

+# Apache $apr1$ to OpenLDAP {APR1} hash converter

+# (C) 2011 Devin J. Pohly

+# You may use this code freely.  It would be nice to be credited.

+

+use MIME::Base64;

+

+while (<>) {

+	($user, $hash) = split(/:/, $_);

+	unless ($hash =~ /^\$apr1\$/) {

+		print STDERR "Not an Apache MD5 hash\n";

+		exit 1;

+	}

+

+	chomp $hash;

+	($_,$_,$salt,$hash) = split(/\$/, $hash);

+

+	$hash =~ tr|./0-9A-Za-z|A-Za-z0-9+/|;

+	$hash .= "AA";

+	$hash =~ s/(.)(.)(.)(.)/$4$3$2$1/gs;

+	$hash = decode_base64($hash);

+	$hash =~ s/(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)..(.)/$1$4$7$10$13$15$2$5$8$11$14$16$3$6$9$12/s;

+	$hash .= $salt;

+	$hash = encode_base64($hash);

+	chop $hash;

+

+	print "$user:{APR1}$hash\n";

+}
\ No newline at end of file
diff --git a/contrib/slapd-modules/passwd/apr1-ltoa.pl b/contrib/slapd-modules/passwd/apr1-ltoa.pl
new file mode 100644
index 0000000..ee628ec
--- /dev/null
+++ b/contrib/slapd-modules/passwd/apr1-ltoa.pl
@@ -0,0 +1,31 @@
+#!/usr/bin/perl -w

+

+# OpenLDAP {APR1} to Apache $apr1$ hash converter

+# (C) 2011 Devin J. Pohly

+# You may use this code freely.  It would be nice to be credited.

+

+use MIME::Base64;

+

+while (<>) {

+	($user, $hash) = split(/:/, $_);

+	unless ($hash =~ /^{APR1}/) {

+		print STDERR "Not an Apache MD5 hash\n";

+		next;

+	}

+

+	chomp $hash;

+	$hash = decode_base64(substr($hash, 6));

+	($hash, $salt) = (substr($hash, 0, 16), substr($hash, 16));

+	$hash = $hash;

+	$hash =~ s/(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)/$1$7$13$2$8$14$3$9$15$4$10$16$5$11$6\0\0$12/s;

+	$hash = encode_base64($hash);

+	chomp $hash;

+	$hash =~ s/(.)(.)(.)(.)/$4$3$2$1/gs;

+	unless ($hash =~ /AA$/) {

+		#print "Problem with hash\n";

+		next;

+	}

+	$hash =~ s/AA$//;

+	$hash =~ tr|A-Za-z0-9+/|./0-9A-Za-z|;

+	print "$user:\$apr1\$$salt\$$hash\n"

+}
\ No newline at end of file
diff --git a/contrib/slapd-modules/passwd/apr1.c b/contrib/slapd-modules/passwd/apr1.c
new file mode 100644
index 0000000..36880f3
--- /dev/null
+++ b/contrib/slapd-modules/passwd/apr1.c
@@ -0,0 +1,236 @@
+/* $OpenLDAP$ */
+/*
+ * This file is derived from OpenLDAP Software. All of the modifications to
+ * OpenLDAP Software represented in the following file were developed by
+ * Devin J. Pohly <djpohly@gmail.com>. I have not assigned rights and/or
+ * interest in this work to any party.
+ *
+ * The extensions to OpenLDAP Software herein are subject to the following
+ * notice:
+ *
+ * Copyright 2011 Devin J. Pohly
+ * Portions Copyright 2011 Howard Chu
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP Public
+ * License.
+ *
+ * A portion of this code is used in accordance with the Beer-ware License,
+ * revision 42, as noted.
+ *
+ */
+
+#include "portable.h"
+
+#include <lber.h>
+#include <lber_pvt.h>
+#include "lutil.h"
+#include "lutil_md5.h"
+#include <ac/string.h>
+
+#include <assert.h>
+
+/* the only difference between this and straight PHK is the magic */
+static LUTIL_PASSWD_CHK_FUNC chk_apr1;
+static LUTIL_PASSWD_HASH_FUNC hash_apr1;
+static const struct berval scheme_apr1 = BER_BVC("{APR1}");
+static const struct berval magic_apr1 = BER_BVC("$apr1$");
+
+static LUTIL_PASSWD_CHK_FUNC chk_bsdmd5;
+static LUTIL_PASSWD_HASH_FUNC hash_bsdmd5;
+static const struct berval scheme_bsdmd5 = BER_BVC("{BSDMD5}");
+static const struct berval magic_bsdmd5 = BER_BVC("$1$");
+
+static const unsigned char apr64[] =
+	"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+#define APR_SALT_SIZE	8
+
+/* The algorithm implemented in this function was created by Poul-Henning
+ * Kamp and released under the following license:
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ */
+static void do_phk_hash(
+	const struct berval *passwd,
+	const struct berval *salt,
+	const struct berval *magic,
+	unsigned char *digest)
+{
+	lutil_MD5_CTX ctx, ctx1;
+	int n;
+
+	/* Start hashing */
+	lutil_MD5Init(&ctx);
+	lutil_MD5Update(&ctx, (const unsigned char *) passwd->bv_val, passwd->bv_len);
+	lutil_MD5Update(&ctx, (const unsigned char *) magic->bv_val, magic->bv_len);
+	lutil_MD5Update(&ctx, (const unsigned char *) salt->bv_val, salt->bv_len);
+	/* Inner hash */
+	lutil_MD5Init(&ctx1);
+	lutil_MD5Update(&ctx1, (const unsigned char *) passwd->bv_val, passwd->bv_len);
+	lutil_MD5Update(&ctx1, (const unsigned char *) salt->bv_val, salt->bv_len);
+	lutil_MD5Update(&ctx1, (const unsigned char *) passwd->bv_val, passwd->bv_len);
+	lutil_MD5Final(digest, &ctx1);
+	/* Nom start mixing things up */
+	for (n = passwd->bv_len; n > 0; n -= LUTIL_MD5_BYTES)
+		lutil_MD5Update(&ctx, digest,
+				(n > LUTIL_MD5_BYTES ? LUTIL_MD5_BYTES : n));
+	memset(digest, 0, LUTIL_MD5_BYTES);
+	/* Curiouser and curiouser... */
+	for (n = passwd->bv_len; n; n >>= 1)
+		if (n & 1)
+			lutil_MD5Update(&ctx, digest, 1);
+		else
+			lutil_MD5Update(&ctx, (const unsigned char *) passwd->bv_val, 1);
+	lutil_MD5Final(digest, &ctx);
+	/*
+	 * Repeatedly hash things into the final value. This was originally
+	 * intended to slow the algorithm down.
+	 */
+	for (n = 0; n < 1000; n++) {
+		lutil_MD5Init(&ctx1);
+		if (n & 1)
+			lutil_MD5Update(&ctx1,
+				(const unsigned char *) passwd->bv_val, passwd->bv_len);
+		else
+			lutil_MD5Update(&ctx1, digest, LUTIL_MD5_BYTES);
+
+		if (n % 3)
+			lutil_MD5Update(&ctx1,
+				(const unsigned char *) salt->bv_val, salt->bv_len);
+		if (n % 7)
+			lutil_MD5Update(&ctx1,
+				(const unsigned char *) passwd->bv_val, passwd->bv_len);
+
+		if (n & 1)
+			lutil_MD5Update(&ctx1, digest, LUTIL_MD5_BYTES);
+		else
+			lutil_MD5Update(&ctx1,
+				(const unsigned char *) passwd->bv_val, passwd->bv_len);
+		lutil_MD5Final(digest, &ctx1);
+	}
+}
+
+static int chk_phk(
+	const struct berval *magic,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	unsigned char digest[LUTIL_MD5_BYTES];
+	unsigned char *orig_pass;
+	int rc;
+	struct berval salt;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len <= sizeof(digest))
+		return LUTIL_PASSWD_ERR;
+
+	/* base64 un-encode password hash */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if (orig_pass == NULL)
+		return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if (rc <= (int) sizeof(digest)) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	salt.bv_val = (char *) &orig_pass[sizeof(digest)];
+	salt.bv_len = rc - sizeof(digest);
+
+	do_phk_hash(cred, &salt, magic, digest);
+
+	if (text)
+		*text = NULL;
+
+	/* compare */
+	rc = memcmp((char *) orig_pass, (char *) digest, sizeof(digest));
+	ber_memfree(orig_pass);
+	return rc ?  LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+static int chk_apr1(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_phk(&magic_apr1, passwd, cred, text);
+}
+
+static int chk_bsdmd5(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_phk(&magic_bsdmd5, passwd, cred, text);
+}
+
+static int hash_phk(
+	const struct berval *scheme,
+	const struct berval *magic,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+	unsigned char digest_buf[LUTIL_MD5_BYTES];
+	char salt_buf[APR_SALT_SIZE];
+	struct berval digest;
+	struct berval salt;
+	int n;
+
+	digest.bv_val = (char *) digest_buf;
+	digest.bv_len = sizeof(digest_buf);
+	salt.bv_val = salt_buf;
+	salt.bv_len = APR_SALT_SIZE;
+
+	/* generate random salt */
+	if (lutil_entropy( (unsigned char *) salt.bv_val, salt.bv_len) < 0)
+		return LUTIL_PASSWD_ERR;
+	/* limit it to characters in the 64-char set */
+	for (n = 0; n < salt.bv_len; n++)
+		salt.bv_val[n] = apr64[salt.bv_val[n] % (sizeof(apr64) - 1)];
+
+	do_phk_hash(passwd, &salt, magic, digest_buf);
+
+	if (text)
+		*text = NULL;
+
+	return lutil_passwd_string64(scheme, &digest, hash, &salt);
+}
+
+static int hash_apr1(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+	return hash_phk(scheme, &magic_apr1, passwd, hash, text);
+}
+
+static int hash_bsdmd5(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+	return hash_phk(scheme, &magic_bsdmd5, passwd, hash, text);
+}
+
+int init_module(int argc, char *argv[]) {
+	int rc;
+	rc = lutil_passwd_add((struct berval *) &scheme_apr1, chk_apr1, hash_apr1);
+	if ( !rc )
+		rc = lutil_passwd_add((struct berval *) &scheme_bsdmd5,
+			chk_bsdmd5, hash_bsdmd5);
+	return rc;
+}
diff --git a/contrib/slapd-modules/passwd/kerberos.c b/contrib/slapd-modules/passwd/kerberos.c
new file mode 100644
index 0000000..bebcbd0
--- /dev/null
+++ b/contrib/slapd-modules/passwd/kerberos.c
@@ -0,0 +1,211 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <unistd.h>
+
+#include <lber.h>
+#include <lber_pvt.h>	/* BER_BVC definition */
+#include "lutil.h"
+#include <ac/string.h>
+
+#ifdef HAVE_KRB5
+#include <krb5.h>
+#elif defined(HAVE_KRB4)
+#include <krb.h>
+#endif
+
+/* From <ldap_pvt.h> */
+LDAP_F( char *) ldap_pvt_get_fqdn LDAP_P(( char * ));
+
+static LUTIL_PASSWD_CHK_FUNC chk_kerberos;
+static const struct berval scheme = BER_BVC("{KERBEROS}");
+
+static int chk_kerberos(
+	const struct berval *sc,
+	const struct berval * passwd,
+	const struct berval * cred,
+	const char **text )
+{
+	unsigned int i;
+	int rtn;
+
+	for( i=0; i<cred->bv_len; i++) {
+		if(cred->bv_val[i] == '\0') {
+			return LUTIL_PASSWD_ERR;	/* NUL character in password */
+		}
+	}
+
+	if( cred->bv_val[i] != '\0' ) {
+		return LUTIL_PASSWD_ERR;	/* cred must behave like a string */
+	}
+
+	for( i=0; i<passwd->bv_len; i++) {
+		if(passwd->bv_val[i] == '\0') {
+			return LUTIL_PASSWD_ERR;	/* NUL character in password */
+		}
+	}
+
+	if( passwd->bv_val[i] != '\0' ) {
+		return LUTIL_PASSWD_ERR;	/* passwd must behave like a string */
+	}
+
+	rtn = LUTIL_PASSWD_ERR;
+
+#ifdef HAVE_KRB5 /* HAVE_HEIMDAL_KRB5 */
+	{
+/* Portions:
+ * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska H\xf6gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+		krb5_context context;
+   		krb5_error_code ret;
+   		krb5_creds creds;
+   		krb5_get_init_creds_opt get_options;
+   		krb5_verify_init_creds_opt verify_options;
+		krb5_principal client, server;
+#ifdef notdef
+		krb5_preauthtype pre_auth_types[] = {KRB5_PADATA_ENC_TIMESTAMP};
+#endif
+
+		ret = krb5_init_context( &context );
+		if (ret) {
+			return LUTIL_PASSWD_ERR;
+		}
+
+#ifdef notdef
+		krb5_get_init_creds_opt_set_preauth_list(&get_options,
+			pre_auth_types, 1);
+#endif
+
+   		krb5_get_init_creds_opt_init( &get_options );
+
+		krb5_verify_init_creds_opt_init( &verify_options );
+	
+		ret = krb5_parse_name( context, passwd->bv_val, &client );
+
+		if (ret) {
+			krb5_free_context( context );
+			return LUTIL_PASSWD_ERR;
+		}
+
+		ret = krb5_get_init_creds_password( context,
+			&creds, client, cred->bv_val, NULL,
+			NULL, 0, NULL, &get_options );
+
+		if (ret) {
+			krb5_free_principal( context, client );
+			krb5_free_context( context );
+			return LUTIL_PASSWD_ERR;
+		}
+
+		{
+			char *host = ldap_pvt_get_fqdn( NULL );
+
+			if( host == NULL ) {
+				krb5_free_principal( context, client );
+				krb5_free_context( context );
+				return LUTIL_PASSWD_ERR;
+			}
+
+			ret = krb5_sname_to_principal( context,
+				host, "ldap", KRB5_NT_SRV_HST, &server );
+
+			ber_memfree( host );
+		}
+
+		if (ret) {
+			krb5_free_principal( context, client );
+			krb5_free_context( context );
+			return LUTIL_PASSWD_ERR;
+		}
+
+		ret = krb5_verify_init_creds( context,
+			&creds, server, NULL, NULL, &verify_options );
+
+		krb5_free_principal( context, client );
+		krb5_free_principal( context, server );
+		krb5_free_cred_contents( context, &creds );
+		krb5_free_context( context );
+
+		rtn = ret ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+	}
+#elif	defined(HAVE_KRB4)
+	{
+		/* Borrowed from Heimdal kpopper */
+/* Portions:
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+		int status;
+		char lrealm[REALM_SZ];
+		char tkt[MAXHOSTNAMELEN];
+
+		status = krb_get_lrealm(lrealm,1);
+		if (status == KFAILURE) {
+			return LUTIL_PASSWD_ERR;
+		}
+
+		snprintf(tkt, sizeof(tkt), "%s_slapd.%u",
+			TKT_ROOT, (unsigned)getpid());
+		krb_set_tkt_string (tkt);
+
+		status = krb_verify_user( passwd->bv_val, "", lrealm,
+			cred->bv_val, 1, "ldap");
+
+		dest_tkt(); /* no point in keeping the tickets */
+
+		return status == KFAILURE ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+	}
+#endif
+
+	return rtn;
+}
+
+int init_module(int argc, char *argv[]) {
+	return lutil_passwd_add( (struct berval *)&scheme, chk_kerberos, NULL );
+}
diff --git a/contrib/slapd-modules/passwd/netscape.c b/contrib/slapd-modules/passwd/netscape.c
new file mode 100644
index 0000000..8e2de7b
--- /dev/null
+++ b/contrib/slapd-modules/passwd/netscape.c
@@ -0,0 +1,83 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <unistd.h>
+
+#include <lber.h>
+#include <lber_pvt.h>
+#include "lutil.h"
+#include "lutil_md5.h"
+#include <ac/string.h>
+
+static LUTIL_PASSWD_CHK_FUNC chk_ns_mta_md5;
+static const struct berval scheme = BER_BVC("{NS-MTA-MD5}");
+
+#define NS_MTA_MD5_PASSLEN	64
+static int chk_ns_mta_md5(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text )
+{
+	lutil_MD5_CTX MD5context;
+	unsigned char MD5digest[LUTIL_MD5_BYTES], c;
+	char buffer[LUTIL_MD5_BYTES*2];
+	int i;
+
+	if( passwd->bv_len != NS_MTA_MD5_PASSLEN ) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	lutil_MD5Init(&MD5context);
+	lutil_MD5Update(&MD5context,
+		(const unsigned char *) &passwd->bv_val[32],
+		32 );
+
+	c = 0x59;
+	lutil_MD5Update(&MD5context,
+		(const unsigned char *) &c,
+		1 );
+
+	lutil_MD5Update(&MD5context,
+		(const unsigned char *) cred->bv_val,
+		cred->bv_len );
+
+	c = 0xF7;
+	lutil_MD5Update(&MD5context,
+		(const unsigned char *) &c,
+		1 );
+
+	lutil_MD5Update(&MD5context,
+		(const unsigned char *) &passwd->bv_val[32],
+		32 );
+
+	lutil_MD5Final(MD5digest, &MD5context);
+
+	for( i=0; i < sizeof( MD5digest ); i++ ) {
+		buffer[i+i]   = "0123456789abcdef"[(MD5digest[i]>>4) & 0x0F]; 
+		buffer[i+i+1] = "0123456789abcdef"[ MD5digest[i] & 0x0F]; 
+	}
+
+	/* compare */
+	return memcmp((char *)passwd->bv_val,
+		(char *)buffer, sizeof(buffer)) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+int init_module(int argc, char *argv[]) {
+	return lutil_passwd_add( (struct berval *)&scheme, chk_ns_mta_md5, NULL );
+}
diff --git a/contrib/slapd-modules/passwd/pbkdf2/Makefile b/contrib/slapd-modules/passwd/pbkdf2/Makefile
new file mode 100644
index 0000000..6279f50
--- /dev/null
+++ b/contrib/slapd-modules/passwd/pbkdf2/Makefile
@@ -0,0 +1,62 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../../..
+LDAP_BUILD = ../../../..
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+#DEFS = -DSLAPD_PBKDF2_DEBUG
+
+SSL_INC =
+SSL_LIB = -lcrypto
+
+INCS = $(LDAP_INC) $(SSL_INC)
+LIBS = $(LDAP_LIB) $(SSL_LIB)
+
+PROGRAMS = pw-pbkdf2.la
+MANPAGES = slapd-pw-pbkdf2.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all:		$(PROGRAMS)
+
+pw-pbkdf2.la: pw-pbkdf2.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/passwd/pbkdf2/README b/contrib/slapd-modules/passwd/pbkdf2/README
new file mode 100644
index 0000000..d4d99d2
--- /dev/null
+++ b/contrib/slapd-modules/passwd/pbkdf2/README
@@ -0,0 +1,99 @@
+PBKDF2 for OpenLDAP
+=======================
+
+pw-pbkdf2.c provides PBKDF2 key derivation functions in OpenLDAP.
+
+Schemes:
+
+ * {PBKDF2} -  alias to {PBKDF2-SHA1}
+ * {PBKDF2-SHA1}
+ * {PBKDF2-SHA256}
+ * {PBKDF2-SHA512}
+
+# Requirements
+
+  * OpenSSL 1.0.0 or later
+
+# Installations
+
+First, You need to configure and build OpenLDAP.
+
+    $ cd <OPENLDAP_BUILD_DIR>/contrib/slapd-modules/passwd/
+    $ git clone https://github.com/hamano/openldap-pbkdf2.git
+    $ cd openldap-pbkdf2/
+    $ make
+    # make install
+
+# Configuration
+
+In slapd.conf:
+
+    moduleload pw-pbkdf2.so
+
+You can also tell OpenLDAP to use the schemes when processing LDAP
+Password Modify Extended Operations, thanks to the password-hash
+option in slapd.conf. For example:
+
+    password-hash {PBKDF2}
+or
+    password-hash {PBKDF2-SHA256}
+or
+    password-hash {PBKDF2-SHA512}
+
+# Testing
+
+You can get hash to use slappasswd.
+
+    $ slappasswd -o module-load=pw-pbkdf2.la -h {PBKDF2} -s secret
+    {PBKDF2}60000$Y6ZHtTTbeUgpIbIW0QDmDA$j/aU7jFKUSbH4UobNQDm9OEIwuw
+
+A quick way to test whether it's working is to customize the rootdn and
+rootpw in slapd.conf, eg:
+
+    rootdn "cn=Manager,dc=example,dc=com"
+    rootpw {PBKDF2}60000$Y6ZHtTTbeUgpIbIW0QDmDA$j/aU7jFKUSbH4UobNQDm9OEIwuw
+
+Then to test, run something like:
+
+    $ ldapsearch -x -b "dc=example,dc=com" -D "cn=Manager,dc=example,dc=com" -w secret
+
+# Debugging
+You can specify -DSLAPD_PBKDF2_DEBUG flag for debugging.
+
+# Message Format
+
+    {PBKDF2}<Iteration>$<Adapted Base64 Salt>$<Adapted Base64 DK>
+
+# References
+
+* [RFC 2898 Password-Based Cryptography][^1]
+[^1]: http://tools.ietf.org/html/rfc2898
+
+* [PKCS #5 PBKDF2 Test Vectors][^2]
+[^2]: http://tools.ietf.org/html/draft-josefsson-pbkdf2-test-vectors-06
+
+* [RFC 2307 Using LDAP as a Network Information Service][^3]
+[^3]: http://tools.ietf.org/html/rfc2307
+
+* [Python Passlib][^4]
+[^4]: http://pythonhosted.org/passlib/
+
+* [Adapted Base64 Encoding][^5]
+[^5]: http://pythonhosted.org/passlib/lib/passlib.utils.html#passlib.utils.ab64_encode
+
+# License
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2009-2022 The OpenLDAP Foundation.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
+# ACKNOWLEDGEMENT
+This work was initially developed by HAMANO Tsukasa <hamano@osstech.co.jp>
diff --git a/contrib/slapd-modules/passwd/pbkdf2/pw-pbkdf2.c b/contrib/slapd-modules/passwd/pbkdf2/pw-pbkdf2.c
new file mode 100644
index 0000000..1cc2770
--- /dev/null
+++ b/contrib/slapd-modules/passwd/pbkdf2/pw-pbkdf2.c
@@ -0,0 +1,451 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2009-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENT:
+ * This work was initially developed by HAMANO Tsukasa <hamano@osstech.co.jp>
+ */
+
+#define _GNU_SOURCE
+
+#include "portable.h"
+#include <ac/string.h>
+#include "lber_pvt.h"
+#include "lutil.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef HAVE_OPENSSL
+#include <openssl/evp.h>
+#elif HAVE_GNUTLS
+#include <nettle/pbkdf2.h>
+#include <nettle/hmac.h>
+typedef void (*pbkdf2_hmac_update)(void *, unsigned, const uint8_t *);
+typedef void (*pbkdf2_hmac_digest)(void *, unsigned, uint8_t *);
+#else
+#error Unsupported crypto backend.
+#endif
+
+#define PBKDF2_ITERATION 10000
+#define PBKDF2_SALT_SIZE 16
+#define PBKDF2_SHA1_DK_SIZE 20
+#define PBKDF2_SHA256_DK_SIZE 32
+#define PBKDF2_SHA512_DK_SIZE 64
+#define PBKDF2_MAX_DK_SIZE 64
+
+const struct berval pbkdf2_scheme = BER_BVC("{PBKDF2}");
+const struct berval pbkdf2_sha1_scheme = BER_BVC("{PBKDF2-SHA1}");
+const struct berval pbkdf2_sha256_scheme = BER_BVC("{PBKDF2-SHA256}");
+const struct berval pbkdf2_sha512_scheme = BER_BVC("{PBKDF2-SHA512}");
+
+/*
+ * Converting base64 string to adapted base64 string.
+ * Adapted base64 encode is identical to general base64 encode except
+ * that it uses '.' instead of '+', and omits trailing padding '=' and
+ * whitespace.
+ * see http://pythonhosted.org/passlib/lib/passlib.utils.html
+ * This is destructive function.
+ */
+static int b64_to_ab64(char *str)
+{
+	char *p = str;
+	do {
+		if(*p == '+'){
+			*p = '.';
+		}
+		if(*p == '='){
+			*p = '\0';
+		}
+	} while(*p++);
+	return 0;
+}
+
+/*
+ * Converting adapted base64 string to base64 string.
+ * dstsize will require src length + 2, due to output string have
+ * potential to append "=" or "==".
+ * return -1 if few output buffer.
+ */
+static int ab64_to_b64(char *src, char *dst, size_t dstsize){
+	int i;
+	char *p = src;
+	for(i=0; p[i] && p[i] != '$'; i++){
+		if(i >= dstsize){
+			dst[0] = '\0';
+			return -1;
+		}
+		if(p[i] == '.'){
+			dst[i] = '+';
+		}else{
+			dst[i] = p[i];
+		}
+	}
+	for(;i%4;i++){
+		if(i >= dstsize){
+			dst[0] = '\0';
+			return -1;
+		}
+		dst[i] = '=';
+	}
+	dst[i] = '\0';
+	return 0;
+}
+
+static int pbkdf2_format(
+	const struct berval *sc,
+	int iteration,
+	const struct berval *salt,
+	const struct berval *dk,
+	struct berval *msg)
+{
+
+	int rc, msg_len;
+	char salt_b64[LUTIL_BASE64_ENCODE_LEN(PBKDF2_SALT_SIZE) + 1];
+	char dk_b64[LUTIL_BASE64_ENCODE_LEN(PBKDF2_MAX_DK_SIZE) + 1];
+
+	rc = lutil_b64_ntop((unsigned char *)salt->bv_val, salt->bv_len,
+						salt_b64, sizeof(salt_b64));
+	if(rc < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+	b64_to_ab64(salt_b64);
+	rc = lutil_b64_ntop((unsigned char *)dk->bv_val, dk->bv_len,
+						dk_b64, sizeof(dk_b64));
+	if(rc < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+	b64_to_ab64(dk_b64);
+	msg_len = asprintf(&msg->bv_val, "%s%d$%s$%s",
+						   sc->bv_val, iteration,
+						   salt_b64, dk_b64);
+	if(msg_len < 0){
+		msg->bv_len = 0;
+		return LUTIL_PASSWD_ERR;
+	}
+
+	msg->bv_len = msg_len;
+	return LUTIL_PASSWD_OK;
+}
+
+static int pbkdf2_encrypt(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *msg,
+	const char **text)
+{
+	unsigned char salt_value[PBKDF2_SALT_SIZE];
+	struct berval salt;
+	unsigned char dk_value[PBKDF2_MAX_DK_SIZE];
+	struct berval dk;
+	int iteration = PBKDF2_ITERATION;
+	int rc;
+#ifdef HAVE_OPENSSL
+	const EVP_MD *md;
+#elif HAVE_GNUTLS
+	struct hmac_sha1_ctx sha1_ctx;
+	struct hmac_sha256_ctx sha256_ctx;
+	struct hmac_sha512_ctx sha512_ctx;
+	void * current_ctx = NULL;
+	pbkdf2_hmac_update current_hmac_update = NULL;
+	pbkdf2_hmac_digest current_hmac_digest = NULL;
+#endif
+
+	salt.bv_val = (char *)salt_value;
+	salt.bv_len = sizeof(salt_value);
+	dk.bv_val = (char *)dk_value;
+
+#ifdef HAVE_OPENSSL
+	if(!ber_bvcmp(scheme, &pbkdf2_scheme)){
+		dk.bv_len = PBKDF2_SHA1_DK_SIZE;
+		md = EVP_sha1();
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha1_scheme)){
+		dk.bv_len = PBKDF2_SHA1_DK_SIZE;
+		md = EVP_sha1();
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha256_scheme)){
+		dk.bv_len = PBKDF2_SHA256_DK_SIZE;
+		md = EVP_sha256();
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha512_scheme)){
+		dk.bv_len = PBKDF2_SHA512_DK_SIZE;
+		md = EVP_sha512();
+	}else{
+		return LUTIL_PASSWD_ERR;
+	}
+#elif HAVE_GNUTLS
+	if(!ber_bvcmp(scheme, &pbkdf2_scheme)){
+		dk.bv_len = PBKDF2_SHA1_DK_SIZE;
+		current_ctx = &sha1_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha1_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha1_digest;
+		hmac_sha1_set_key(current_ctx, passwd->bv_len, (const uint8_t *) passwd->bv_val);
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha1_scheme)){
+		dk.bv_len = PBKDF2_SHA1_DK_SIZE;
+		current_ctx = &sha1_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha1_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha1_digest;
+		hmac_sha1_set_key(current_ctx, passwd->bv_len, (const uint8_t *) passwd->bv_val);
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha256_scheme)){
+		dk.bv_len = PBKDF2_SHA256_DK_SIZE;
+		current_ctx = &sha256_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha256_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha256_digest;
+		hmac_sha256_set_key(current_ctx, passwd->bv_len, (const uint8_t *) passwd->bv_val);
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha512_scheme)){
+		dk.bv_len = PBKDF2_SHA512_DK_SIZE;
+		current_ctx = &sha512_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha512_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha512_digest;
+		hmac_sha512_set_key(current_ctx, passwd->bv_len, (const uint8_t *) passwd->bv_val);
+	}else{
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+
+	if(lutil_entropy((unsigned char *)salt.bv_val, salt.bv_len) < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+
+#ifdef HAVE_OPENSSL
+	if(!PKCS5_PBKDF2_HMAC(passwd->bv_val, passwd->bv_len,
+						  (unsigned char *)salt.bv_val, salt.bv_len,
+						  iteration, md, dk.bv_len, dk_value)){
+		return LUTIL_PASSWD_ERR;
+	}
+#elif HAVE_GNUTLS
+	PBKDF2(current_ctx, current_hmac_update, current_hmac_digest,
+						  dk.bv_len, iteration,
+						  salt.bv_len, (const uint8_t *) salt.bv_val,
+						  dk.bv_len, dk_value);
+#endif
+
+#ifdef SLAPD_PBKDF2_DEBUG
+	printf("Encrypt for %s\n", scheme->bv_val);
+	printf("  Password:\t%s\n", passwd->bv_val);
+
+	printf("  Salt:\t\t");
+	int i;
+	for(i=0; i<salt.bv_len; i++){
+		printf("%02x", salt_value[i]);
+	}
+	printf("\n");
+	printf("  Iteration:\t%d\n", iteration);
+
+	printf("  DK:\t\t");
+	for(i=0; i<dk.bv_len; i++){
+		printf("%02x", dk_value[i]);
+	}
+	printf("\n");
+#endif
+
+	rc = pbkdf2_format(scheme, iteration, &salt, &dk, msg);
+
+#ifdef SLAPD_PBKDF2_DEBUG
+	printf("  Output:\t%s\n", msg->bv_val);
+#endif
+
+	return rc;
+}
+
+static int pbkdf2_check(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	int rc;
+	int iteration;
+
+	/* salt_value require PBKDF2_SALT_SIZE + 1 in lutil_b64_pton. */
+	unsigned char salt_value[PBKDF2_SALT_SIZE + 1];
+	char salt_b64[LUTIL_BASE64_ENCODE_LEN(PBKDF2_SALT_SIZE) + 1];
+	/* dk_value require PBKDF2_MAX_DK_SIZE + 1 in lutil_b64_pton. */
+	unsigned char dk_value[PBKDF2_MAX_DK_SIZE + 1];
+	char dk_b64[LUTIL_BASE64_ENCODE_LEN(PBKDF2_MAX_DK_SIZE) + 1];
+	unsigned char input_dk_value[PBKDF2_MAX_DK_SIZE];
+	size_t dk_len;
+#ifdef HAVE_OPENSSL
+	const EVP_MD *md;
+#elif HAVE_GNUTLS
+	struct hmac_sha1_ctx sha1_ctx;
+	struct hmac_sha256_ctx sha256_ctx;
+	struct hmac_sha512_ctx sha512_ctx;
+	void * current_ctx = NULL;
+	pbkdf2_hmac_update current_hmac_update = NULL;
+	pbkdf2_hmac_digest current_hmac_digest = NULL;
+#endif
+
+#ifdef SLAPD_PBKDF2_DEBUG
+	printf("Checking for %s\n", scheme->bv_val);
+	printf("  Stored Value:\t%s\n", passwd->bv_val);
+	printf("  Input Cred:\t%s\n", cred->bv_val);
+#endif
+
+#ifdef HAVE_OPENSSL
+	if(!ber_bvcmp(scheme, &pbkdf2_scheme)){
+		dk_len = PBKDF2_SHA1_DK_SIZE;
+		md = EVP_sha1();
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha1_scheme)){
+		dk_len = PBKDF2_SHA1_DK_SIZE;
+		md = EVP_sha1();
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha256_scheme)){
+		dk_len = PBKDF2_SHA256_DK_SIZE;
+		md = EVP_sha256();
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha512_scheme)){
+		dk_len = PBKDF2_SHA512_DK_SIZE;
+		md = EVP_sha512();
+	}else{
+		return LUTIL_PASSWD_ERR;
+	}
+#elif HAVE_GNUTLS
+	if(!ber_bvcmp(scheme, &pbkdf2_scheme)){
+		dk_len = PBKDF2_SHA1_DK_SIZE;
+		current_ctx = &sha1_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha1_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha1_digest;
+		hmac_sha1_set_key(current_ctx, cred->bv_len, (const uint8_t *) cred->bv_val);
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha1_scheme)){
+		dk_len = PBKDF2_SHA1_DK_SIZE;
+		current_ctx = &sha1_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha1_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha1_digest;
+		hmac_sha1_set_key(current_ctx, cred->bv_len, (const uint8_t *) cred->bv_val);
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha256_scheme)){
+		dk_len = PBKDF2_SHA256_DK_SIZE;
+		current_ctx = &sha256_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha256_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha256_digest;
+		hmac_sha256_set_key(current_ctx, cred->bv_len, (const uint8_t *) cred->bv_val);
+	}else if(!ber_bvcmp(scheme, &pbkdf2_sha512_scheme)){
+		dk_len = PBKDF2_SHA512_DK_SIZE;
+		current_ctx = &sha512_ctx;
+		current_hmac_update = (pbkdf2_hmac_update) &hmac_sha512_update;
+		current_hmac_digest = (pbkdf2_hmac_digest) &hmac_sha512_digest;
+		hmac_sha512_set_key(current_ctx, cred->bv_len, (const uint8_t *) cred->bv_val);
+	}else{
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+
+	iteration = atoi(passwd->bv_val);
+	if(iteration < 1){
+		return LUTIL_PASSWD_ERR;
+	}
+
+	char *ptr;
+	ptr = strchr(passwd->bv_val, '$');
+	if(!ptr){
+		return LUTIL_PASSWD_ERR;
+	}
+	ptr++; /* skip '$' */
+	rc = ab64_to_b64(ptr, salt_b64, sizeof(salt_b64));
+	if(rc < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+
+	ptr = strchr(ptr, '$');
+	if(!ptr){
+		return LUTIL_PASSWD_ERR;
+	}
+	ptr++; /* skip '$' */
+	rc = ab64_to_b64(ptr, dk_b64, sizeof(dk_b64));
+	if(rc < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* The targetsize require PBKDF2_SALT_SIZE + 1 in lutil_b64_pton. */
+	rc = lutil_b64_pton(salt_b64, salt_value, PBKDF2_SALT_SIZE + 1);
+	if(rc < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* consistency check */
+	if(rc != PBKDF2_SALT_SIZE){
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* The targetsize require PBKDF2_MAX_DK_SIZE + 1 in lutil_b64_pton. */
+	rc = lutil_b64_pton(dk_b64, dk_value, sizeof(dk_value));
+	if(rc < 0){
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* consistency check */
+	if(rc != dk_len){
+		return LUTIL_PASSWD_ERR;
+	}
+
+#ifdef HAVE_OPENSSL
+	if(!PKCS5_PBKDF2_HMAC(cred->bv_val, cred->bv_len,
+						  salt_value, PBKDF2_SALT_SIZE,
+						  iteration, md, dk_len, input_dk_value)){
+		return LUTIL_PASSWD_ERR;
+	}
+#elif HAVE_GNUTLS
+	PBKDF2(current_ctx, current_hmac_update, current_hmac_digest,
+						  dk_len, iteration,
+						  PBKDF2_SALT_SIZE, salt_value,
+						  dk_len, input_dk_value);
+#endif
+
+	rc = memcmp(dk_value, input_dk_value, dk_len);
+#ifdef SLAPD_PBKDF2_DEBUG
+	printf("  Iteration:\t%d\n", iteration);
+	printf("  Base64 Salt:\t%s\n", salt_b64);
+	printf("  Base64 DK:\t%s\n", dk_b64);
+	int i;
+	printf("  Stored Salt:\t");
+	for(i=0; i<PBKDF2_SALT_SIZE; i++){
+		printf("%02x", salt_value[i]);
+	}
+	printf("\n");
+
+	printf("  Stored DK:\t");
+	for(i=0; i<dk_len; i++){
+		printf("%02x", dk_value[i]);
+	}
+	printf("\n");
+
+	printf("  Input DK:\t");
+	for(i=0; i<dk_len; i++){
+		printf("%02x", input_dk_value[i]);
+	}
+	printf("\n");
+	printf("  Result:\t%d\n", rc);
+#endif
+	return rc?LUTIL_PASSWD_ERR:LUTIL_PASSWD_OK;
+}
+
+int init_module(int argc, char *argv[]) {
+	int rc;
+	rc = lutil_passwd_add((struct berval *)&pbkdf2_scheme,
+						  pbkdf2_check, pbkdf2_encrypt);
+	if(rc) return rc;
+	rc = lutil_passwd_add((struct berval *)&pbkdf2_sha1_scheme,
+						  pbkdf2_check, pbkdf2_encrypt);
+	if(rc) return rc;
+
+	rc = lutil_passwd_add((struct berval *)&pbkdf2_sha256_scheme,
+						  pbkdf2_check, pbkdf2_encrypt);
+	if(rc) return rc;
+
+	rc = lutil_passwd_add((struct berval *)&pbkdf2_sha512_scheme,
+						  pbkdf2_check, pbkdf2_encrypt);
+	return rc;
+}
+
+/*
+ * Local variables:
+ * indent-tabs-mode: t
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
diff --git a/contrib/slapd-modules/passwd/pbkdf2/slapd-pw-pbkdf2.5 b/contrib/slapd-modules/passwd/pbkdf2/slapd-pw-pbkdf2.5
new file mode 100644
index 0000000..3bacf62
--- /dev/null
+++ b/contrib/slapd-modules/passwd/pbkdf2/slapd-pw-pbkdf2.5
@@ -0,0 +1,112 @@
+.TH SLAPD-PW-PBKDF2 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2015-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapd-pw-pbkdf2 \- PBKDF2 password module to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.RS
+.LP
+.B moduleload
+.B pw-pbkdf2
+.RE
+.SH DESCRIPTION
+.LP
+The
+.B pw-pbkdf2
+module to
+.BR slapd (8)
+provides support for the use of the key stretching function
+PBKDF2 (Password-Based Key Derivation Function 2) following RFC 2898
+in hashed passwords in OpenLDAP.
+.LP
+It does so by providing the following additional password schemes for use in slapd:
+.RS
+.TP
+.B {PBKDF2}
+alias to {PBKDF2-SHA1}
+.TP
+.B {PBKDF2-SHA1}
+PBKDF2 using HMAC-SHA-1 as the underlying pseudorandom function
+.TP
+.B {PBKDF2-SHA256}
+PBKDF2 using HMAC-SHA-256 as the underlying pseudorandom function
+.TP
+.B {PBKDF2-SHA512}
+PBKDF2 using HMAC-SHA-512 as the underlying pseudorandom function
+.RE
+
+.SH CONFIGURATION
+The
+.B pw-pbkdf2
+module does not need any configuration.
+.LP
+After loading the module, the password schemes
+{PBKDF2}, {PBKDF2-SHA1}, {PBKDF2-SHA256}, and {PBKDF2-SHA512}
+will be recognised in values of the
+.I userPassword
+attribute.
+.LP
+You can then instruct OpenLDAP to use these schemes when processing
+the LDAPv3 Password Modify (RFC 3062) extended operations by using the
+.BR password-hash
+option in
+.BR slapd.conf (5).
+
+.SH NOTES
+If you want to use the schemes described here with
+.BR slappasswd (8),
+remember to load the module using its command line options.
+The relevant option/value is:
+.RS
+.LP
+.B \-o
+.BR module\-load = pw-pbkdf2
+.LP
+.RE
+Depending on
+.BR pw-pbkdf2 's
+location, you may also need:
+.RS
+.LP
+.B \-o
+.BR module\-path = \fIpathspec\fP
+.RE
+
+.SH EXAMPLES
+All of the userPassword LDAP attributes below encode the password
+.RI ' secret '.
+.EX
+.LP
+userPassword: {PBKDF2-SHA512}10000$/oQ4xZi382mk7kvCd3ZdkA$2wqjpuyV2l0U/a1QwoQPOtlQL.UcJGNACj1O24balruqQb/NgPW6OCvvrrJP8.SzA3/5iYvLnwWPzeX8IK/bEQ
+.LP
+userPassword: {PBKDF2-SHA256}10000$jq40ImWtmpTE.aYDYV1GfQ$mpiL4ui02ACmYOAnCjp/MI1gQk50xLbZ54RZneU0fCg
+.LP
+userPassword: {PBKDF2-SHA1}10000$QJTEclnXgh9Cz3ChCWpdAg$9.s98jwFJM.NXJK9ca/oJ5AyoAQ
+.EE
+.LP
+To make {PBKDF2-SHA512} the password hash used in Password Modify extended operations,
+simply set this line in slapd.conf(5):
+.EX
+.LP
+password-hash   {PBKDF2-SHA512}
+.EX
+
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR ldappasswd (1),
+.BR slappasswd (8),
+.BR ldap (3),
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.SH ACKNOWLEDGEMENTS
+This manual page has been written by Peter Marschall based on the
+module's README file written by HAMANO Tsukasa <hamano@osstech.co.jp>
+.LP
+.B OpenLDAP
+is developed and maintained by The OpenLDAP Project (http://www.openldap.org/).
+.B OpenLDAP
+is derived from University of Michigan LDAP 3.3 Release.
diff --git a/contrib/slapd-modules/passwd/radius.c b/contrib/slapd-modules/passwd/radius.c
new file mode 100644
index 0000000..8474bf5
--- /dev/null
+++ b/contrib/slapd-modules/passwd/radius.c
@@ -0,0 +1,149 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <lber.h>
+#include <lber_pvt.h>	/* BER_BVC definition */
+#include "lutil.h"
+#include <ldap_pvt_thread.h>
+#include <ac/string.h>
+#include <ac/unistd.h>
+
+#include <radlib.h>
+
+extern char *global_host;	/* from slapd */
+static LUTIL_PASSWD_CHK_FUNC chk_radius;
+static const struct berval scheme = BER_BVC("{RADIUS}");
+static char *config_filename;
+static ldap_pvt_thread_mutex_t libradius_mutex;
+
+static int
+chk_radius(
+	const struct berval	*sc,
+	const struct berval	*passwd,
+	const struct berval	*cred,
+	const char		**text )
+{
+	unsigned int		i;
+	int			rc = LUTIL_PASSWD_ERR;
+
+	struct rad_handle	*h = NULL;
+
+	for ( i = 0; i < cred->bv_len; i++ ) {
+		if ( cred->bv_val[ i ] == '\0' ) {
+			return LUTIL_PASSWD_ERR;	/* NUL character in cred */
+		}
+	}
+
+	if ( cred->bv_val[ i ] != '\0' ) {
+		return LUTIL_PASSWD_ERR;	/* cred must behave like a string */
+	}
+
+	for ( i = 0; i < passwd->bv_len; i++ ) {
+		if ( passwd->bv_val[ i ] == '\0' ) {
+			return LUTIL_PASSWD_ERR;	/* NUL character in password */
+		}
+	}
+
+	if ( passwd->bv_val[ i ] != '\0' ) {
+		return LUTIL_PASSWD_ERR;	/* passwd must behave like a string */
+	}
+
+	ldap_pvt_thread_mutex_lock( &libradius_mutex );
+
+	h = rad_auth_open();
+	if ( h == NULL ) {
+		ldap_pvt_thread_mutex_unlock( &libradius_mutex );
+		return LUTIL_PASSWD_ERR;
+	}
+
+	if ( rad_config( h, config_filename ) != 0 ) {
+		goto done;
+	}
+
+	if ( rad_create_request( h, RAD_ACCESS_REQUEST ) ) {
+		goto done;
+	}
+
+	if ( rad_put_string( h, RAD_USER_NAME, passwd->bv_val ) != 0 ) {
+		goto done;
+	}
+
+	if ( rad_put_string( h, RAD_USER_PASSWORD, cred->bv_val ) != 0 ) {
+		goto done;
+	}
+
+	if ( rad_put_string( h, RAD_NAS_IDENTIFIER, global_host ) != 0 ) {
+		goto done;
+	}
+
+	switch ( rad_send_request( h ) ) {
+	case RAD_ACCESS_ACCEPT:
+		rc = LUTIL_PASSWD_OK;
+		break;
+
+	case RAD_ACCESS_REJECT:
+		rc = LUTIL_PASSWD_ERR;
+		break;
+
+	case RAD_ACCESS_CHALLENGE:
+		rc = LUTIL_PASSWD_ERR;
+		break;
+
+	case -1:
+		/* no valid response is received */
+		break;
+	}
+
+done:;
+	rad_close( h );
+
+	ldap_pvt_thread_mutex_unlock( &libradius_mutex );
+	return rc;
+}
+
+int
+term_module()
+{
+	return ldap_pvt_thread_mutex_destroy( &libradius_mutex );
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	int	i;
+
+	for ( i = 0; i < argc; i++ ) {
+		if ( strncasecmp( argv[ i ], "config=", STRLENOF( "config=" ) ) == 0 ) {
+			/* FIXME: what if multiple loads of same module?
+			 * does it make sense (e.g. override an existing one)? */
+			if ( config_filename == NULL ) {
+				config_filename = ber_strdup( &argv[ i ][ STRLENOF( "config=" ) ] );
+			}
+
+		} else {
+			fprintf( stderr, "init_module(radius): unknown arg#%d=\"%s\".\n",
+				i, argv[ i ] );
+			return 1;
+		}
+	}
+
+	ldap_pvt_thread_mutex_init( &libradius_mutex );
+
+	return lutil_passwd_add( (struct berval *)&scheme, chk_radius, NULL );
+}
diff --git a/contrib/slapd-modules/passwd/sha2/Makefile b/contrib/slapd-modules/passwd/sha2/Makefile
new file mode 100644
index 0000000..2d20756
--- /dev/null
+++ b/contrib/slapd-modules/passwd/sha2/Makefile
@@ -0,0 +1,59 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = 
+#DEFS = -DSLAPD_SHA2_DEBUG
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = pw-sha2.la
+MANPAGES = slapd-pw-sha2.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all:		$(PROGRAMS)
+
+pw-sha2.la:	slapd-sha2.lo sha2.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/passwd/sha2/README b/contrib/slapd-modules/passwd/sha2/README
new file mode 100644
index 0000000..bab1dcd
--- /dev/null
+++ b/contrib/slapd-modules/passwd/sha2/README
@@ -0,0 +1,144 @@
+SHA-2 OpenLDAP support
+----------------------
+
+slapd-sha2.c provides support for SSHA-512, SSHA-384, SSHA-256,
+SHA-512, SHA-384 and SHA-256 hashed passwords in OpenLDAP. For
+instance, one could have the LDAP attribute:
+
+userPassword: {SHA512}vSsar3708Jvp9Szi2NWZZ02Bqp1qRCFpbcTZPdBhnWgs5WtNZKnvCXdhztmeD2cmW192CF5bDufKRpayrW/isg==
+
+or:
+
+userPassword: {SHA384}WKd1ukESvjAFrkQHznV9iP2nHUBJe7gCbsrFTU4//HIyzo3jq1rLMK45dg/ufFPt
+
+or:
+
+userPassword: {SHA256}K7gNU3sdo+OL0wNhqoVWhr3g6s1xYv72ol/pe/Unols=
+
+all of which encode the password 'secret'.
+
+
+Building
+--------
+
+1) Customize the OPENLDAP variable in Makefile to point to the OpenLDAP
+source root.
+
+For initial testing you might also want to edit DEFS to define
+SLAPD_SHA2_DEBUG, which enables logging to stderr (don't leave this on
+in production, as it prints passwords in cleartext).
+
+2) Run 'make' to produce slapd-sha2.so
+
+3) Copy slapd-sha2.so somewhere permanent.
+
+4) Edit your slapd.conf (eg. /etc/ldap/slapd.conf), and add:
+
+moduleload ...path/to/slapd-sha2.so
+
+5) Restart slapd.
+
+
+Configuring
+-----------
+
+The {SSHA256}, {SSHA384}, {SSHA512}, {SSHA256}, {SHA384} and {SHA512}
+password schemes should now be recognised.
+
+You can also tell OpenLDAP to use one of these new schemes when processing LDAP
+Password Modify Extended Operations, thanks to the password-hash option in
+slapd.conf. For example:
+
+password-hash	{SSHA512}
+
+
+Testing
+-------
+
+A quick way to test whether it's working is to customize the rootdn and
+rootpw in slapd.conf, eg:
+
+rootdn          "cn=admin,dc=example,dc=com"
+# This encrypts the string 'secret'
+
+rootpw  {SHA256}K7gNU3sdo+OL0wNhqoVWhr3g6s1xYv72ol/pe/Unols=
+
+Then to test, run something like:
+
+ldapsearch -b "dc=example,dc=com" -D "cn=admin,dc=example,dc=com" -x -w secret
+
+
+-- Test hashes:
+
+Test hashes can be generated with openssl:
+
+$ echo -n "secret" | openssl dgst -sha256 -binary | openssl enc -base64
+K7gNU3sdo+OL0wNhqoVWhr3g6s1xYv72ol/pe/Unols=
+$ echo -n "secret" | openssl dgst -sha384 -binary | openssl enc -base64
+WKd1ukESvjAFrkQHznV9iP2nHUBJe7gCbsrFTU4//HIyzo3jq1rLMK45dg/ufFPt
+$ echo -n "secret" | openssl dgst -sha512 -binary | openssl enc -base64
+vSsar3708Jvp9Szi2NWZZ02Bqp1qRCFpbcTZPdBhnWgs5WtNZKnvCXdhztmeD2cm
+W192CF5bDufKRpayrW/isg==
+
+(join those lines up to form the full hash)
+
+
+
+Alternatively we could modify an existing user's password with
+ldappasswd, and then test binding as that user:
+
+$ ldappasswd -D "cn=admin,dc=example,dc=com" -x -W -S uid=jturner,ou=People,dc=example,dc=com
+New password: secret
+Re-enter new password: secret
+Enter LDAP Password: <cn=admin's password>
+
+$ ldapsearch -b "dc=example,dc=com" -D "uid=jturner,ou=People,dc=example,dc=com" -x -w secret
+
+
+Debugging (SHA-512, SHA-384 and SHA-256 only)
+---------------------------------------------
+
+To see what's going on, recompile with SLAPD_SHA2_DEBUG (use the
+commented-out DEFS in Makefile), and then run slapd from the console
+to see stderr:
+
+$ sudo /etc/init.d/slapd stop
+Stopping OpenLDAP: slapd.
+$ sudo /usr/sbin/slapd -f /etc/ldap/slapd.conf -h ldap://localhost:389 -d stats
+@(#) $OpenLDAP$
+        buildd@palmer:/build/buildd/openldap2.3-2.4.9/debian/build/servers/slapd
+slapd starting
+...
+Validating password
+  Hash scheme:		{SHA256}
+  Password to validate:	secret
+  Password hash:	K7gNU3sdo+OL0wNhqoVWhr3g6s1xYv72ol/pe/Unols=
+  Stored password hash: K7gNU3sdo+OL0wNhqoVWhr3g6s1xYv72ol/pe/Unols=
+  Result:		match
+conn=0 op=0 BIND dn="cn=admin,dc=example,dc=com" mech=SIMPLE ssf=0
+conn=0 op=0 RESULT tag=97 err=0 text=
+conn=0 op=1 SRCH base="dc=example,dc=com" scope=2 deref=0 filter="(objectClass=*)"
+conn=0 fd=12 closed (connection lost)
+
+---
+
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2009-2022 The OpenLDAP Foundation.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
+---
+
+ACKNOWLEDGEMENT:
+This work was initially developed by Jeff Turner for inclusion in
+OpenLDAP Software, based upon the SHA-2 implementation independently
+developed by Aaron Gifford.
+
diff --git a/contrib/slapd-modules/passwd/sha2/sha2.c b/contrib/slapd-modules/passwd/sha2/sha2.c
new file mode 100644
index 0000000..047741a
--- /dev/null
+++ b/contrib/slapd-modules/passwd/sha2/sha2.c
@@ -0,0 +1,1070 @@
+/* $OpenLDAP$ */
+/*
+ * FILE:	sha2.c
+ * AUTHOR:	Aaron D. Gifford - http://www.aarongifford.com/
+ * 
+ * Copyright (c) 2000-2001, Aaron D. Gifford
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: sha2.c,v 1.1 2001/11/08 00:01:51 adg Exp adg $
+ */
+
+#include <string.h>	/* memcpy()/memset() or bcopy()/bzero() */
+#include <assert.h>	/* assert() */
+#include "sha2.h"
+
+/*
+ * ASSERT NOTE:
+ * Some sanity checking code is included using assert().  On my FreeBSD
+ * system, this additional code can be removed by compiling with NDEBUG
+ * defined.  Check your own systems manpage on assert() to see how to
+ * compile WITHOUT the sanity checking code on your system.
+ *
+ * UNROLLED TRANSFORM LOOP NOTE:
+ * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform
+ * loop version for the hash transform rounds (defined using macros
+ * later in this file).  Either define on the command line, for example:
+ *
+ *   cc -DSHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c
+ *
+ * or define below:
+ *
+ *   #define SHA2_UNROLL_TRANSFORM
+ *
+ */
+
+
+/*** SHA-256/384/512 Machine Architecture Definitions *****************/
+/*
+ * BYTE_ORDER NOTE:
+ *
+ * Please make sure that your system defines BYTE_ORDER.  If your
+ * architecture is little-endian, make sure it also defines
+ * LITTLE_ENDIAN and that the two (BYTE_ORDER and LITTLE_ENDIAN) are
+ * equivalent.
+ *
+ * If your system does not define the above, then you can do so by
+ * hand like this:
+ *
+ *   #define LITTLE_ENDIAN 1234
+ *   #define BIG_ENDIAN    4321
+ *
+ * And for little-endian machines, add:
+ *
+ *   #define BYTE_ORDER LITTLE_ENDIAN 
+ *
+ * Or for big-endian machines:
+ *
+ *   #define BYTE_ORDER BIG_ENDIAN
+ *
+ * The FreeBSD machine this was written on defines BYTE_ORDER
+ * appropriately by including <sys/types.h> (which in turn includes
+ * <machine/endian.h> where the appropriate definitions are actually
+ * made).
+ */
+#if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
+#error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
+#endif
+
+/*
+ * Define the followingsha2_* types to types of the correct length on
+ * the native architecture.   Most BSD systems and Linux define u_intXX_t
+ * types.  Machines with very recent ANSI C headers, can use the
+ * uintXX_t definitions from inttypes.h by defining SHA2_USE_INTTYPES_H
+ * during compile or in the sha.h header file.
+ *
+ * Machines that support neither u_intXX_t nor inttypes.h's uintXX_t
+ * will need to define these three typedefs below (and the appropriate
+ * ones in sha.h too) by hand according to their system architecture.
+ *
+ * Thank you, Jun-ichiro itojun Hagino, for suggesting using u_intXX_t
+ * types and pointing out recent ANSI C support for uintXX_t in inttypes.h.
+ */
+#ifdef SHA2_USE_INTTYPES_H
+
+typedef uint8_t  sha2_byte;	/* Exactly 1 byte */
+typedef uint32_t sha2_word32;	/* Exactly 4 bytes */
+typedef uint64_t sha2_word64;	/* Exactly 8 bytes */
+
+#else /* SHA2_USE_INTTYPES_H */
+
+typedef u_int8_t  sha2_byte;	/* Exactly 1 byte */
+typedef u_int32_t sha2_word32;	/* Exactly 4 bytes */
+typedef u_int64_t sha2_word64;	/* Exactly 8 bytes */
+
+#endif /* SHA2_USE_INTTYPES_H */
+
+
+/*** SHA-256/384/512 Various Length Definitions ***********************/
+/* NOTE: Most of these are in sha2.h */
+#define SHA256_SHORT_BLOCK_LENGTH	(SHA256_BLOCK_LENGTH - 8)
+#define SHA384_SHORT_BLOCK_LENGTH	(SHA384_BLOCK_LENGTH - 16)
+#define SHA512_SHORT_BLOCK_LENGTH	(SHA512_BLOCK_LENGTH - 16)
+
+
+/*** ENDIAN REVERSAL MACROS *******************************************/
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define REVERSE32(w,x)	{ \
+	sha2_word32 tmp = (w); \
+	tmp = (tmp >> 16) | (tmp << 16); \
+	(x) = ((tmp & 0xff00ff00UL) >> 8) | ((tmp & 0x00ff00ffUL) << 8); \
+}
+#define REVERSE64(w,x)	{ \
+	sha2_word64 tmp = (w); \
+	tmp = (tmp >> 32) | (tmp << 32); \
+	tmp = ((tmp & 0xff00ff00ff00ff00ULL) >> 8) | \
+	      ((tmp & 0x00ff00ff00ff00ffULL) << 8); \
+	(x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \
+	      ((tmp & 0x0000ffff0000ffffULL) << 16); \
+}
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+
+/*
+ * Macro for incrementally adding the unsigned 64-bit integer n to the
+ * unsigned 128-bit integer (represented using a two-element array of
+ * 64-bit words):
+ */
+#define ADDINC128(w,n)	{ \
+	(w)[0] += (sha2_word64)(n); \
+	if ((w)[0] < (n)) { \
+		(w)[1]++; \
+	} \
+}
+
+/*
+ * Macros for copying blocks of memory and for zeroing out ranges
+ * of memory.  Using these macros makes it easy to switch from
+ * using memset()/memcpy() and using bzero()/bcopy().
+ *
+ * Please define either SHA2_USE_MEMSET_MEMCPY or define
+ * SHA2_USE_BZERO_BCOPY depending on which function set you
+ * choose to use:
+ */
+#if !defined(SHA2_USE_MEMSET_MEMCPY) && !defined(SHA2_USE_BZERO_BCOPY)
+/* Default to memset()/memcpy() if no option is specified */
+#define	SHA2_USE_MEMSET_MEMCPY	1
+#endif
+#if defined(SHA2_USE_MEMSET_MEMCPY) && defined(SHA2_USE_BZERO_BCOPY)
+/* Abort with an error if BOTH options are defined */
+#error Define either SHA2_USE_MEMSET_MEMCPY or SHA2_USE_BZERO_BCOPY, not both!
+#endif
+
+#ifdef SHA2_USE_MEMSET_MEMCPY
+#define MEMSET_BZERO(p,l)	memset((p), 0, (l))
+#define MEMCPY_BCOPY(d,s,l)	memcpy((d), (s), (l))
+#endif
+#ifdef SHA2_USE_BZERO_BCOPY
+#define MEMSET_BZERO(p,l)	bzero((p), (l))
+#define MEMCPY_BCOPY(d,s,l)	bcopy((s), (d), (l))
+#endif
+
+
+/*** THE SIX LOGICAL FUNCTIONS ****************************************/
+/*
+ * Bit shifting and rotation (used by the six SHA-XYZ logical functions:
+ *
+ *   NOTE:  The naming of R and S appears backwards here (R is a SHIFT and
+ *   S is a ROTATION) because the SHA-256/384/512 description document
+ *   (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this
+ *   same "backwards" definition.
+ */
+/* Shift-right (used in SHA-256, SHA-384, and SHA-512): */
+#define R(b,x) 		((x) >> (b))
+/* 32-bit Rotate-right (used in SHA-256): */
+#define S32(b,x)	(((x) >> (b)) | ((x) << (32 - (b))))
+/* 64-bit Rotate-right (used in SHA-384 and SHA-512): */
+#define S64(b,x)	(((x) >> (b)) | ((x) << (64 - (b))))
+
+/* Two of six logical functions used in SHA-256, SHA-384, and SHA-512: */
+#define Ch(x,y,z)	(((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x,y,z)	(((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+/* Four of six logical functions used in SHA-256: */
+#define Sigma0_256(x)	(S32(2,  (x)) ^ S32(13, (x)) ^ S32(22, (x)))
+#define Sigma1_256(x)	(S32(6,  (x)) ^ S32(11, (x)) ^ S32(25, (x)))
+#define sigma0_256(x)	(S32(7,  (x)) ^ S32(18, (x)) ^ R(3 ,   (x)))
+#define sigma1_256(x)	(S32(17, (x)) ^ S32(19, (x)) ^ R(10,   (x)))
+
+/* Four of six logical functions used in SHA-384 and SHA-512: */
+#define Sigma0_512(x)	(S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))
+#define Sigma1_512(x)	(S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))
+#define sigma0_512(x)	(S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7,   (x)))
+#define sigma1_512(x)	(S64(19, (x)) ^ S64(61, (x)) ^ R( 6,   (x)))
+
+/*** INTERNAL FUNCTION PROTOTYPES *************************************/
+/* NOTE: These should not be accessed directly from outside this
+ * library -- they are intended for private internal visibility/use
+ * only.
+ */
+static void SHA512_Last(SHA512_CTX*);
+static void SHA256_Transform(SHA256_CTX*, const sha2_word32*);
+static void SHA512_Transform(SHA512_CTX*, const sha2_word64*);
+
+
+/*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/
+/* Hash constant words K for SHA-256: */
+const static sha2_word32 K256[64] = {
+	0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
+	0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
+	0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
+	0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
+	0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+	0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
+	0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
+	0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
+	0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
+	0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+	0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
+	0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
+	0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
+	0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
+	0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+	0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+};
+
+/* Initial hash value H for SHA-256: */
+const static sha2_word32 sha256_initial_hash_value[8] = {
+	0x6a09e667UL,
+	0xbb67ae85UL,
+	0x3c6ef372UL,
+	0xa54ff53aUL,
+	0x510e527fUL,
+	0x9b05688cUL,
+	0x1f83d9abUL,
+	0x5be0cd19UL
+};
+
+/* Hash constant words K for SHA-384 and SHA-512: */
+const static sha2_word64 K512[80] = {
+	0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
+	0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
+	0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+	0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
+	0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
+	0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+	0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
+	0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
+	0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+	0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
+	0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
+	0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+	0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
+	0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
+	0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+	0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
+	0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
+	0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+	0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
+	0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
+	0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+	0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
+	0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
+	0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+	0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
+	0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
+	0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+	0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
+	0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
+	0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+	0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
+	0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
+	0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+	0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
+	0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
+	0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+	0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
+	0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
+	0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+	0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
+};
+
+/* Initial hash value H for SHA-384 */
+const static sha2_word64 sha384_initial_hash_value[8] = {
+	0xcbbb9d5dc1059ed8ULL,
+	0x629a292a367cd507ULL,
+	0x9159015a3070dd17ULL,
+	0x152fecd8f70e5939ULL,
+	0x67332667ffc00b31ULL,
+	0x8eb44a8768581511ULL,
+	0xdb0c2e0d64f98fa7ULL,
+	0x47b5481dbefa4fa4ULL
+};
+
+/* Initial hash value H for SHA-512 */
+const static sha2_word64 sha512_initial_hash_value[8] = {
+	0x6a09e667f3bcc908ULL,
+	0xbb67ae8584caa73bULL,
+	0x3c6ef372fe94f82bULL,
+	0xa54ff53a5f1d36f1ULL,
+	0x510e527fade682d1ULL,
+	0x9b05688c2b3e6c1fULL,
+	0x1f83d9abfb41bd6bULL,
+	0x5be0cd19137e2179ULL
+};
+
+/*
+ * Constant used by SHA256/384/512_End() functions for converting the
+ * digest to a readable hexadecimal character string:
+ */
+static const char *sha2_hex_digits = "0123456789abcdef";
+
+
+/*** SHA-256: *********************************************************/
+void SHA256_Init(SHA256_CTX* context) {
+	if (context == (SHA256_CTX*)0) {
+		return;
+	}
+	MEMCPY_BCOPY(context->state, sha256_initial_hash_value, SHA256_DIGEST_LENGTH);
+	MEMSET_BZERO(context->buffer, SHA256_BLOCK_LENGTH);
+	context->bitcount = 0;
+}
+
+#ifdef SHA2_UNROLL_TRANSFORM
+
+/* Unrolled SHA-256 round macros: */
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+
+#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h)	\
+	REVERSE32(*data++, W256[j]); \
+	T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
+             K256[j] + W256[j]; \
+	(d) += T1; \
+	(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
+	j++
+
+
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h)	\
+	T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
+	     K256[j] + (W256[j] = *data++); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
+	j++
+
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND256(a,b,c,d,e,f,g,h)	\
+	s0 = W256[(j+1)&0x0f]; \
+	s0 = sigma0_256(s0); \
+	s1 = W256[(j+14)&0x0f]; \
+	s1 = sigma1_256(s1); \
+	T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + \
+	     (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
+	j++
+
+void SHA256_Transform(SHA256_CTX* context, const sha2_word32* data) {
+	sha2_word32	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word32	T1, *W256;
+	int		j;
+
+	W256 = (sha2_word32*)context->buffer;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+		/* Rounds 0 to 15 (unrolled): */
+		ROUND256_0_TO_15(a,b,c,d,e,f,g,h);
+		ROUND256_0_TO_15(h,a,b,c,d,e,f,g);
+		ROUND256_0_TO_15(g,h,a,b,c,d,e,f);
+		ROUND256_0_TO_15(f,g,h,a,b,c,d,e);
+		ROUND256_0_TO_15(e,f,g,h,a,b,c,d);
+		ROUND256_0_TO_15(d,e,f,g,h,a,b,c);
+		ROUND256_0_TO_15(c,d,e,f,g,h,a,b);
+		ROUND256_0_TO_15(b,c,d,e,f,g,h,a);
+	} while (j < 16);
+
+	/* Now for the remaining rounds to 64: */
+	do {
+		ROUND256(a,b,c,d,e,f,g,h);
+		ROUND256(h,a,b,c,d,e,f,g);
+		ROUND256(g,h,a,b,c,d,e,f);
+		ROUND256(f,g,h,a,b,c,d,e);
+		ROUND256(e,f,g,h,a,b,c,d);
+		ROUND256(d,e,f,g,h,a,b,c);
+		ROUND256(c,d,e,f,g,h,a,b);
+		ROUND256(b,c,d,e,f,g,h,a);
+	} while (j < 64);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = 0;
+}
+
+#else /* SHA2_UNROLL_TRANSFORM */
+
+void SHA256_Transform(SHA256_CTX* context, const sha2_word32* data) {
+	sha2_word32	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word32	T1, T2, *W256;
+	int		j;
+
+	W256 = (sha2_word32*)context->buffer;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+#if BYTE_ORDER == LITTLE_ENDIAN
+		/* Copy data while converting to host byte order */
+		REVERSE32(*data++,W256[j]);
+		/* Apply the SHA-256 compression function to update a..h */
+		T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+		/* Apply the SHA-256 compression function to update a..h with copy */
+		T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = *data++);
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+		T2 = Sigma0_256(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 16);
+
+	do {
+		/* Part of the message block expansion: */
+		s0 = W256[(j+1)&0x0f];
+		s0 = sigma0_256(s0);
+		s1 = W256[(j+14)&0x0f];	
+		s1 = sigma1_256(s1);
+
+		/* Apply the SHA-256 compression function to update a..h */
+		T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + 
+		     (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0);
+		T2 = Sigma0_256(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 64);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = T2 = 0;
+}
+
+#endif /* SHA2_UNROLL_TRANSFORM */
+
+void SHA256_Update(SHA256_CTX* context, const sha2_byte *data, size_t len) {
+	unsigned int	freespace, usedspace;
+
+	if (len == 0) {
+		/* Calling with no data is valid - we do nothing */
+		return;
+	}
+
+	/* Sanity check: */
+	assert(context != (SHA256_CTX*)0 && data != (sha2_byte*)0);
+
+	usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
+	if (usedspace > 0) {
+		/* Calculate how much free space is available in the buffer */
+		freespace = SHA256_BLOCK_LENGTH - usedspace;
+
+		if (len >= freespace) {
+			/* Fill the buffer completely and process it */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace);
+			context->bitcount += freespace << 3;
+			len -= freespace;
+			data += freespace;
+			SHA256_Transform(context, (sha2_word32*)context->buffer);
+		} else {
+			/* The buffer is not yet full */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, len);
+			context->bitcount += len << 3;
+			/* Clean up: */
+			usedspace = freespace = 0;
+			return;
+		}
+	}
+	while (len >= SHA256_BLOCK_LENGTH) {
+		/* Process as many complete blocks as we can */
+		SHA256_Transform(context, (sha2_word32*)data);
+		context->bitcount += SHA256_BLOCK_LENGTH << 3;
+		len -= SHA256_BLOCK_LENGTH;
+		data += SHA256_BLOCK_LENGTH;
+	}
+	if (len > 0) {
+		/* There's left-overs, so save 'em */
+		MEMCPY_BCOPY(context->buffer, data, len);
+		context->bitcount += len << 3;
+	}
+	/* Clean up: */
+	usedspace = freespace = 0;
+}
+
+void SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
+	sha2_word32	*d = (sha2_word32*)digest;
+	sha2_word64 *p;
+	unsigned int	usedspace;
+
+	/* Sanity check: */
+	assert(context != (SHA256_CTX*)0);
+
+	/* If no digest buffer is passed, we don't bother doing this: */
+	if (digest != (sha2_byte*)0) {
+		usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
+#if BYTE_ORDER == LITTLE_ENDIAN
+		/* Convert FROM host byte order */
+		REVERSE64(context->bitcount,context->bitcount);
+#endif
+		if (usedspace > 0) {
+			/* Begin padding with a 1 bit: */
+			context->buffer[usedspace++] = 0x80;
+
+			if (usedspace <= SHA256_SHORT_BLOCK_LENGTH) {
+				/* Set-up for the last transform: */
+				MEMSET_BZERO(&context->buffer[usedspace], SHA256_SHORT_BLOCK_LENGTH - usedspace);
+			} else {
+				if (usedspace < SHA256_BLOCK_LENGTH) {
+					MEMSET_BZERO(&context->buffer[usedspace], SHA256_BLOCK_LENGTH - usedspace);
+				}
+				/* Do second-to-last transform: */
+				SHA256_Transform(context, (sha2_word32*)context->buffer);
+
+				/* And set-up for the last transform: */
+				MEMSET_BZERO(context->buffer, SHA256_SHORT_BLOCK_LENGTH);
+			}
+		} else {
+			/* Set-up for the last transform: */
+			MEMSET_BZERO(context->buffer, SHA256_SHORT_BLOCK_LENGTH);
+
+			/* Begin padding with a 1 bit: */
+			*context->buffer = 0x80;
+		}
+		/* Set the bit count: */
+		p = (sha2_word64 *)&context->buffer[SHA256_SHORT_BLOCK_LENGTH];
+		*p = context->bitcount;
+
+		/* Final transform: */
+		SHA256_Transform(context, (sha2_word32*)context->buffer);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+		{
+			/* Convert TO host byte order */
+			int	j;
+			for (j = 0; j < 8; j++) {
+				REVERSE32(context->state[j],context->state[j]);
+				*d++ = context->state[j];
+			}
+		}
+#else
+		MEMCPY_BCOPY(d, context->state, SHA256_DIGEST_LENGTH);
+#endif
+	}
+
+	/* Clean up state data: */
+	MEMSET_BZERO(context, sizeof(*context));
+	usedspace = 0;
+}
+
+char *SHA256_End(SHA256_CTX* context, char buffer[]) {
+	sha2_byte	digest[SHA256_DIGEST_LENGTH], *d = digest;
+	int		i;
+
+	/* Sanity check: */
+	assert(context != (SHA256_CTX*)0);
+
+	if (buffer != (char*)0) {
+		SHA256_Final(digest, context);
+
+		for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {
+			*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
+			*buffer++ = sha2_hex_digits[*d & 0x0f];
+			d++;
+		}
+		*buffer = (char)0;
+	} else {
+		MEMSET_BZERO(context, sizeof(*context));
+	}
+	MEMSET_BZERO(digest, SHA256_DIGEST_LENGTH);
+	return buffer;
+}
+
+char* SHA256_Data(const sha2_byte* data, size_t len, char digest[SHA256_DIGEST_STRING_LENGTH]) {
+	SHA256_CTX	context;
+
+	SHA256_Init(&context);
+	SHA256_Update(&context, data, len);
+	return SHA256_End(&context, digest);
+}
+
+
+/*** SHA-512: *********************************************************/
+void SHA512_Init(SHA512_CTX* context) {
+	if (context == (SHA512_CTX*)0) {
+		return;
+	}
+	MEMCPY_BCOPY(context->state, sha512_initial_hash_value, SHA512_DIGEST_LENGTH);
+	MEMSET_BZERO(context->buffer, SHA512_BLOCK_LENGTH);
+	context->bitcount[0] = context->bitcount[1] =  0;
+}
+
+#ifdef SHA2_UNROLL_TRANSFORM
+
+/* Unrolled SHA-512 round macros: */
+#if BYTE_ORDER == LITTLE_ENDIAN
+
+#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h)	\
+	REVERSE64(*data++, W512[j]); \
+	T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
+             K512[j] + W512[j]; \
+	(d) += T1, \
+	(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)), \
+	j++
+
+
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h)	\
+	T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
+             K512[j] + (W512[j] = *data++); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
+	j++
+
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+
+#define ROUND512(a,b,c,d,e,f,g,h)	\
+	s0 = W512[(j+1)&0x0f]; \
+	s0 = sigma0_512(s0); \
+	s1 = W512[(j+14)&0x0f]; \
+	s1 = sigma1_512(s1); \
+	T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + \
+             (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \
+	(d) += T1; \
+	(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
+	j++
+
+void SHA512_Transform(SHA512_CTX* context, const sha2_word64* data) {
+	sha2_word64	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word64	T1, *W512 = (sha2_word64*)context->buffer;
+	int		j;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+		ROUND512_0_TO_15(a,b,c,d,e,f,g,h);
+		ROUND512_0_TO_15(h,a,b,c,d,e,f,g);
+		ROUND512_0_TO_15(g,h,a,b,c,d,e,f);
+		ROUND512_0_TO_15(f,g,h,a,b,c,d,e);
+		ROUND512_0_TO_15(e,f,g,h,a,b,c,d);
+		ROUND512_0_TO_15(d,e,f,g,h,a,b,c);
+		ROUND512_0_TO_15(c,d,e,f,g,h,a,b);
+		ROUND512_0_TO_15(b,c,d,e,f,g,h,a);
+	} while (j < 16);
+
+	/* Now for the remaining rounds up to 79: */
+	do {
+		ROUND512(a,b,c,d,e,f,g,h);
+		ROUND512(h,a,b,c,d,e,f,g);
+		ROUND512(g,h,a,b,c,d,e,f);
+		ROUND512(f,g,h,a,b,c,d,e);
+		ROUND512(e,f,g,h,a,b,c,d);
+		ROUND512(d,e,f,g,h,a,b,c);
+		ROUND512(c,d,e,f,g,h,a,b);
+		ROUND512(b,c,d,e,f,g,h,a);
+	} while (j < 80);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = 0;
+}
+
+#else /* SHA2_UNROLL_TRANSFORM */
+
+void SHA512_Transform(SHA512_CTX* context, const sha2_word64* data) {
+	sha2_word64	a, b, c, d, e, f, g, h, s0, s1;
+	sha2_word64	T1, T2, *W512 = (sha2_word64*)context->buffer;
+	int		j;
+
+	/* Initialize registers with the prev. intermediate value */
+	a = context->state[0];
+	b = context->state[1];
+	c = context->state[2];
+	d = context->state[3];
+	e = context->state[4];
+	f = context->state[5];
+	g = context->state[6];
+	h = context->state[7];
+
+	j = 0;
+	do {
+#if BYTE_ORDER == LITTLE_ENDIAN
+		/* Convert TO host byte order */
+		REVERSE64(*data++, W512[j]);
+		/* Apply the SHA-512 compression function to update a..h */
+		T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
+#else /* BYTE_ORDER == LITTLE_ENDIAN */
+		/* Apply the SHA-512 compression function to update a..h with copy */
+		T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = *data++);
+#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+		T2 = Sigma0_512(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 16);
+
+	do {
+		/* Part of the message block expansion: */
+		s0 = W512[(j+1)&0x0f];
+		s0 = sigma0_512(s0);
+		s1 = W512[(j+14)&0x0f];
+		s1 =  sigma1_512(s1);
+
+		/* Apply the SHA-512 compression function to update a..h */
+		T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
+		     (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0);
+		T2 = Sigma0_512(a) + Maj(a, b, c);
+		h = g;
+		g = f;
+		f = e;
+		e = d + T1;
+		d = c;
+		c = b;
+		b = a;
+		a = T1 + T2;
+
+		j++;
+	} while (j < 80);
+
+	/* Compute the current intermediate hash value */
+	context->state[0] += a;
+	context->state[1] += b;
+	context->state[2] += c;
+	context->state[3] += d;
+	context->state[4] += e;
+	context->state[5] += f;
+	context->state[6] += g;
+	context->state[7] += h;
+
+	/* Clean up */
+	a = b = c = d = e = f = g = h = T1 = T2 = 0;
+}
+
+#endif /* SHA2_UNROLL_TRANSFORM */
+
+void SHA512_Update(SHA512_CTX* context, const sha2_byte *data, size_t len) {
+	unsigned int	freespace, usedspace;
+
+	if (len == 0) {
+		/* Calling with no data is valid - we do nothing */
+		return;
+	}
+
+	/* Sanity check: */
+	assert(context != (SHA512_CTX*)0 && data != (sha2_byte*)0);
+
+	usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
+	if (usedspace > 0) {
+		/* Calculate how much free space is available in the buffer */
+		freespace = SHA512_BLOCK_LENGTH - usedspace;
+
+		if (len >= freespace) {
+			/* Fill the buffer completely and process it */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace);
+			ADDINC128(context->bitcount, freespace << 3);
+			len -= freespace;
+			data += freespace;
+			SHA512_Transform(context, (sha2_word64*)context->buffer);
+		} else {
+			/* The buffer is not yet full */
+			MEMCPY_BCOPY(&context->buffer[usedspace], data, len);
+			ADDINC128(context->bitcount, len << 3);
+			/* Clean up: */
+			usedspace = freespace = 0;
+			return;
+		}
+	}
+	while (len >= SHA512_BLOCK_LENGTH) {
+		/* Process as many complete blocks as we can */
+		SHA512_Transform(context, (sha2_word64*)data);
+		ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
+		len -= SHA512_BLOCK_LENGTH;
+		data += SHA512_BLOCK_LENGTH;
+	}
+	if (len > 0) {
+		/* There's left-overs, so save 'em */
+		MEMCPY_BCOPY(context->buffer, data, len);
+		ADDINC128(context->bitcount, len << 3);
+	}
+	/* Clean up: */
+	usedspace = freespace = 0;
+}
+
+void SHA512_Last(SHA512_CTX* context) {
+	sha2_word64 *p;
+	unsigned int	usedspace;
+
+	usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
+#if BYTE_ORDER == LITTLE_ENDIAN
+	/* Convert FROM host byte order */
+	REVERSE64(context->bitcount[0],context->bitcount[0]);
+	REVERSE64(context->bitcount[1],context->bitcount[1]);
+#endif
+	if (usedspace > 0) {
+		/* Begin padding with a 1 bit: */
+		context->buffer[usedspace++] = 0x80;
+
+		if (usedspace <= SHA512_SHORT_BLOCK_LENGTH) {
+			/* Set-up for the last transform: */
+			MEMSET_BZERO(&context->buffer[usedspace], SHA512_SHORT_BLOCK_LENGTH - usedspace);
+		} else {
+			if (usedspace < SHA512_BLOCK_LENGTH) {
+				MEMSET_BZERO(&context->buffer[usedspace], SHA512_BLOCK_LENGTH - usedspace);
+			}
+			/* Do second-to-last transform: */
+			SHA512_Transform(context, (sha2_word64*)context->buffer);
+
+			/* And set-up for the last transform: */
+			MEMSET_BZERO(context->buffer, SHA512_BLOCK_LENGTH - 2);
+		}
+	} else {
+		/* Prepare for final transform: */
+		MEMSET_BZERO(context->buffer, SHA512_SHORT_BLOCK_LENGTH);
+
+		/* Begin padding with a 1 bit: */
+		*context->buffer = 0x80;
+	}
+	/* Store the length of input data (in bits): */
+	p = (sha2_word64 *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH];
+	p[0] = context->bitcount[1];
+	p[1] = context->bitcount[0];
+
+	/* Final transform: */
+	SHA512_Transform(context, (sha2_word64*)context->buffer);
+}
+
+void SHA512_Final(sha2_byte digest[], SHA512_CTX* context) {
+	sha2_word64	*d = (sha2_word64*)digest;
+
+	/* Sanity check: */
+	assert(context != (SHA512_CTX*)0);
+
+	/* If no digest buffer is passed, we don't bother doing this: */
+	if (digest != (sha2_byte*)0) {
+		SHA512_Last(context);
+
+		/* Save the hash data for output: */
+#if BYTE_ORDER == LITTLE_ENDIAN
+		{
+			/* Convert TO host byte order */
+			int	j;
+			for (j = 0; j < 8; j++) {
+				REVERSE64(context->state[j],context->state[j]);
+				*d++ = context->state[j];
+			}
+		}
+#else
+		MEMCPY_BCOPY(d, context->state, SHA512_DIGEST_LENGTH);
+#endif
+	}
+
+	/* Zero out state data */
+	MEMSET_BZERO(context, sizeof(*context));
+}
+
+char *SHA512_End(SHA512_CTX* context, char buffer[]) {
+	sha2_byte	digest[SHA512_DIGEST_LENGTH], *d = digest;
+	int		i;
+
+	/* Sanity check: */
+	assert(context != (SHA512_CTX*)0);
+
+	if (buffer != (char*)0) {
+		SHA512_Final(digest, context);
+
+		for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
+			*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
+			*buffer++ = sha2_hex_digits[*d & 0x0f];
+			d++;
+		}
+		*buffer = (char)0;
+	} else {
+		MEMSET_BZERO(context, sizeof(*context));
+	}
+	MEMSET_BZERO(digest, SHA512_DIGEST_LENGTH);
+	return buffer;
+}
+
+char* SHA512_Data(const sha2_byte* data, size_t len, char digest[SHA512_DIGEST_STRING_LENGTH]) {
+	SHA512_CTX	context;
+
+	SHA512_Init(&context);
+	SHA512_Update(&context, data, len);
+	return SHA512_End(&context, digest);
+}
+
+
+/*** SHA-384: *********************************************************/
+void SHA384_Init(SHA384_CTX* context) {
+	if (context == (SHA384_CTX*)0) {
+		return;
+	}
+	MEMCPY_BCOPY(context->state, sha384_initial_hash_value, SHA512_DIGEST_LENGTH);
+	MEMSET_BZERO(context->buffer, SHA384_BLOCK_LENGTH);
+	context->bitcount[0] = context->bitcount[1] = 0;
+}
+
+void SHA384_Update(SHA384_CTX* context, const sha2_byte* data, size_t len) {
+	SHA512_Update((SHA512_CTX*)context, data, len);
+}
+
+void SHA384_Final(sha2_byte digest[], SHA384_CTX* context) {
+	sha2_word64	*d = (sha2_word64*)digest;
+
+	/* Sanity check: */
+	assert(context != (SHA384_CTX*)0);
+
+	/* If no digest buffer is passed, we don't bother doing this: */
+	if (digest != (sha2_byte*)0) {
+		SHA512_Last((SHA512_CTX*)context);
+
+		/* Save the hash data for output: */
+#if BYTE_ORDER == LITTLE_ENDIAN
+		{
+			/* Convert TO host byte order */
+			int	j;
+			for (j = 0; j < 6; j++) {
+				REVERSE64(context->state[j],context->state[j]);
+				*d++ = context->state[j];
+			}
+		}
+#else
+		MEMCPY_BCOPY(d, context->state, SHA384_DIGEST_LENGTH);
+#endif
+	}
+
+	/* Zero out state data */
+	MEMSET_BZERO(context, sizeof(*context));
+}
+
+char *SHA384_End(SHA384_CTX* context, char buffer[]) {
+	sha2_byte	digest[SHA384_DIGEST_LENGTH], *d = digest;
+	int		i;
+
+	/* Sanity check: */
+	assert(context != (SHA384_CTX*)0);
+
+	if (buffer != (char*)0) {
+		SHA384_Final(digest, context);
+
+		for (i = 0; i < SHA384_DIGEST_LENGTH; i++) {
+			*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
+			*buffer++ = sha2_hex_digits[*d & 0x0f];
+			d++;
+		}
+		*buffer = (char)0;
+	} else {
+		MEMSET_BZERO(context, sizeof(*context));
+	}
+	MEMSET_BZERO(digest, SHA384_DIGEST_LENGTH);
+	return buffer;
+}
+
+char* SHA384_Data(const sha2_byte* data, size_t len, char digest[SHA384_DIGEST_STRING_LENGTH]) {
+	SHA384_CTX	context;
+
+	SHA384_Init(&context);
+	SHA384_Update(&context, data, len);
+	return SHA384_End(&context, digest);
+}
+
diff --git a/contrib/slapd-modules/passwd/sha2/sha2.h b/contrib/slapd-modules/passwd/sha2/sha2.h
new file mode 100644
index 0000000..7fff142
--- /dev/null
+++ b/contrib/slapd-modules/passwd/sha2/sha2.h
@@ -0,0 +1,236 @@
+/* $OpenLDAP$ */
+/*
+ * FILE:	sha2.h
+ * AUTHOR:	Aaron D. Gifford - http://www.aarongifford.com/
+ * 
+ * Copyright (c) 2000-2001, Aaron D. Gifford
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
+ */
+
+#ifndef __SHA2_H__
+#define __SHA2_H__
+
+#include "portable.h"
+
+#ifdef HAVE_INTTYPES_H
+#  define SHA2_USE_INTTYPES_H 1
+#endif
+
+#ifndef LITTLE_ENDIAN
+#  define LITTLE_ENDIAN 1234
+#endif
+#ifndef BIG_ENDIAN
+#  define BIG_ENDIAN    4321
+#endif
+#ifndef BYTE_ORDER
+#  ifdef WORDS_BIGENDIAN
+#    define BYTE_ORDER BIG_ENDIAN
+#  else
+#    define BYTE_ORDER LITTLE_ENDIAN
+#  endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Import u_intXX_t size_t type definitions from system headers.  You
+ * may need to change this, or define these things yourself in this
+ * file.
+ */
+#include <sys/types.h>
+
+#ifdef SHA2_USE_INTTYPES_H
+
+#include <inttypes.h>
+
+#endif /* SHA2_USE_INTTYPES_H */
+
+
+/*** SHA-256/384/512 Various Length Definitions ***********************/
+#define SHA256_BLOCK_LENGTH		64
+#define SHA256_DIGEST_LENGTH		32
+#define SHA256_DIGEST_STRING_LENGTH	(SHA256_DIGEST_LENGTH * 2 + 1)
+#define SHA384_BLOCK_LENGTH		128
+#define SHA384_DIGEST_LENGTH		48
+#define SHA384_DIGEST_STRING_LENGTH	(SHA384_DIGEST_LENGTH * 2 + 1)
+#define SHA512_BLOCK_LENGTH		128
+#define SHA512_DIGEST_LENGTH		64
+#define SHA512_DIGEST_STRING_LENGTH	(SHA512_DIGEST_LENGTH * 2 + 1)
+
+
+/*** SHA-256/384/512 Context Structures *******************************/
+/* NOTE: If your architecture does not define either u_intXX_t types or
+ * uintXX_t (from inttypes.h), you may need to define things by hand
+ * for your system:
+ */
+#if 0
+typedef unsigned char u_int8_t;		/* 1-byte  (8-bits)  */
+typedef unsigned int u_int32_t;		/* 4-bytes (32-bits) */
+typedef unsigned long long u_int64_t;	/* 8-bytes (64-bits) */
+#endif
+/*
+ * Most BSD systems already define u_intXX_t types, as does Linux.
+ * Some systems, however, like Compaq's Tru64 Unix instead can use
+ * uintXX_t types defined by very recent ANSI C standards and included
+ * in the file:
+ *
+ *   #include <inttypes.h>
+ *
+ * If you choose to use <inttypes.h> then please define: 
+ *
+ *   #define SHA2_USE_INTTYPES_H
+ *
+ * Or on the command line during compile:
+ *
+ *   cc -DSHA2_USE_INTTYPES_H ...
+ */
+#ifdef SHA2_USE_INTTYPES_H
+
+typedef struct _SHA256_CTX {
+	uint32_t	state[8];
+	uint64_t	bitcount;
+	uint8_t	buffer[SHA256_BLOCK_LENGTH];
+} SHA256_CTX;
+typedef struct _SHA512_CTX {
+	uint64_t	state[8];
+	uint64_t	bitcount[2];
+	uint8_t	buffer[SHA512_BLOCK_LENGTH];
+} SHA512_CTX;
+
+#else /* SHA2_USE_INTTYPES_H */
+
+typedef struct _SHA256_CTX {
+	u_int32_t	state[8];
+	u_int64_t	bitcount;
+	u_int8_t	buffer[SHA256_BLOCK_LENGTH];
+} SHA256_CTX;
+typedef struct _SHA512_CTX {
+	u_int64_t	state[8];
+	u_int64_t	bitcount[2];
+	u_int8_t	buffer[SHA512_BLOCK_LENGTH];
+} SHA512_CTX;
+
+#endif /* SHA2_USE_INTTYPES_H */
+
+typedef SHA512_CTX SHA384_CTX;
+
+
+/*** SHA-256/384/512 Function Prototypes ******************************/
+/* avoid symbol clash with other crypto libs */
+#define SHA256_Init		pw_SHA256_Init
+#define SHA256_Update	pw_SHA256_Update
+#define SHA256_Final	pw_SHA256_Final
+#define SHA256_End		pw_SHA256_End
+#define SHA256_Data		pw_SHA256_Data
+
+#define SHA384_Init		pw_SHA384_Init
+#define SHA384_Update	pw_SHA384_Update
+#define SHA384_Final	pw_SHA384_Final
+#define SHA384_End		pw_SHA384_End
+#define SHA384_Data		pw_SHA384_Data
+
+#define SHA512_Init		pw_SHA512_Init
+#define SHA512_Update	pw_SHA512_Update
+#define SHA512_Final	pw_SHA512_Final
+#define SHA512_End		pw_SHA512_End
+#define SHA512_Data		pw_SHA512_Data
+
+#ifndef NOPROTO
+#ifdef SHA2_USE_INTTYPES_H
+
+void SHA256_Init(SHA256_CTX *);
+void SHA256_Update(SHA256_CTX*, const uint8_t*, size_t);
+void SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
+char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
+char* SHA256_Data(const uint8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
+
+void SHA384_Init(SHA384_CTX*);
+void SHA384_Update(SHA384_CTX*, const uint8_t*, size_t);
+void SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
+char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
+char* SHA384_Data(const uint8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
+
+void SHA512_Init(SHA512_CTX*);
+void SHA512_Update(SHA512_CTX*, const uint8_t*, size_t);
+void SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
+char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
+char* SHA512_Data(const uint8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
+
+#else /* SHA2_USE_INTTYPES_H */
+
+void SHA256_Init(SHA256_CTX *);
+void SHA256_Update(SHA256_CTX*, const u_int8_t*, size_t);
+void SHA256_Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
+char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
+char* SHA256_Data(const u_int8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
+
+void SHA384_Init(SHA384_CTX*);
+void SHA384_Update(SHA384_CTX*, const u_int8_t*, size_t);
+void SHA384_Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
+char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
+char* SHA384_Data(const u_int8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
+
+void SHA512_Init(SHA512_CTX*);
+void SHA512_Update(SHA512_CTX*, const u_int8_t*, size_t);
+void SHA512_Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
+char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
+char* SHA512_Data(const u_int8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
+
+#endif /* SHA2_USE_INTTYPES_H */
+
+#else /* NOPROTO */
+
+void SHA256_Init();
+void SHA256_Update();
+void SHA256_Final();
+char* SHA256_End();
+char* SHA256_Data();
+
+void SHA384_Init();
+void SHA384_Update();
+void SHA384_Final();
+char* SHA384_End();
+char* SHA384_Data();
+
+void SHA512_Init();
+void SHA512_Update();
+void SHA512_Final();
+char* SHA512_End();
+char* SHA512_Data();
+
+#endif /* NOPROTO */
+
+#ifdef	__cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __SHA2_H__ */
+
diff --git a/contrib/slapd-modules/passwd/sha2/slapd-pw-sha2.5 b/contrib/slapd-modules/passwd/sha2/slapd-pw-sha2.5
new file mode 100644
index 0000000..f700b52
--- /dev/null
+++ b/contrib/slapd-modules/passwd/sha2/slapd-pw-sha2.5
@@ -0,0 +1,118 @@
+.TH SLAPD-PW-SHA2 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2015-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapd-pw-sha2 \- SHA-2 password module to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.RS
+.LP
+.B moduleload
+.B pw-sha2
+.RE
+.SH DESCRIPTION
+.LP
+The
+.B pw-sha2
+module to
+.BR slapd (8)
+provides support for the use of SSHA-512, SSHA-384, SSHA-256, SHA-512,
+SHA-384 and SHA-256 from the SHA-2 family (FIPS 180-2) of hash functions
+in hashed passwords in OpenLDAP.
+.LP
+It does so by providing the following additional password schemes for use in slapd:
+.RS
+.TP
+.B {SSHA256}
+SHA-256 with salt, giving hash values of 256 bits length
+.TP
+.B {SHA256}
+plain SHA-256 giving hash values of 256 bits length
+.TP
+.B {SSHA384}
+SHA-384 with salt, giving hash values of 384 bits length
+.TP
+.B {SHA384}
+plain SHA-384 giving hash values of 384 bits length
+.TP
+.B {SSHA512}
+SHA-512 with salt, giving hash values of 512 bits length
+.TP
+.B {SHA512}
+plain SHA-512 giving hash values of 512 bits length
+.RE
+
+.SH CONFIGURATION
+The
+.B pw-sha2
+module does not need any configuration.
+.LP
+After loading the module, the password schemes
+{SSHA256}, {SSHA384}, {SSHA512}, {SSHA256}, {SHA384}, and {SHA512}
+will be recognised in values of the
+.I userPassword
+attribute.
+.LP
+You can then instruct OpenLDAP to use these schemes when processing
+the LDAPv3 Password Modify (RFC 3062) extended operations by using the
+.BR password-hash
+option in
+.BR slapd.conf (5).
+
+.SH NOTES
+If you want to use the schemes described here with
+.BR slappasswd (8),
+don't forget to load the module using its command line options.
+The relevant option/value is:
+.RS
+.LP
+.B \-o
+.BR module\-load = pw-sha2
+.LP
+.RE
+Depending on
+.BR pw-sha2 's
+location, you may also need:
+.RS
+.LP
+.B \-o
+.BR module\-path = \fIpathspec\fP
+.RE
+
+.SH EXAMPLES
+All of the userPassword LDAP attributes below encode the password
+.RI ' secret '.
+.EX
+.LP
+userPassword: {SHA512}vSsar3708Jvp9Szi2NWZZ02Bqp1qRCFpbcTZPdBhnWgs5WtNZKnvCXdhztmeD2cmW192CF5bDufKRpayrW/isg==
+.LP
+userPassword: {SHA384}WKd1ukESvjAFrkQHznV9iP2nHUBJe7gCbsrFTU4//HIyzo3jq1rLMK45dg/ufFPt
+.LP
+userPassword: {SHA256}K7gNU3sdo+OL0wNhqoVWhr3g6s1xYv72ol/pe/Unols=
+.EE
+.LP
+To make {SSHA512} the password hash used in Password Modify extended operations,
+simply set this line in slapd.conf(5):
+.EX
+.LP
+password-hash   {SSHA512}
+.EX
+
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR ldappasswd (1),
+.BR slappasswd (8),
+.BR ldap (3),
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.SH ACKNOWLEDGEMENTS
+This manual page has been written by Peter Marschall based on the
+module's README file written by Jeff Turner.
+.LP
+.B OpenLDAP
+is developed and maintained by The OpenLDAP Project (http://www.openldap.org/).
+.B OpenLDAP
+is derived from University of Michigan LDAP 3.3 Release.
diff --git a/contrib/slapd-modules/passwd/sha2/slapd-sha2.c b/contrib/slapd-modules/passwd/sha2/slapd-sha2.c
new file mode 100644
index 0000000..d67afda
--- /dev/null
+++ b/contrib/slapd-modules/passwd/sha2/slapd-sha2.c
@@ -0,0 +1,508 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2009-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENT:
+ * This work was initially developed by Jeff Turner for inclusion
+ * in OpenLDAP Software.
+ *
+ * Hash methods for passwords generation added by Cédric Delfosse.
+ *
+ * SSHA256 / SSHA384 / SSHA512 support added, and chk_sha*() replaced
+ * with libraries/liblutil/passwd.c:chk_sha1() implementation to
+ * fix a race by SATOH Fumiyasu @ OSS Technology, Inc.
+ */
+
+#include "portable.h"
+
+#include <ac/string.h>
+
+#include "lber_pvt.h"
+#include "lutil.h"
+#include "sha2.h"
+
+#ifdef SLAPD_SHA2_DEBUG
+#include <stdio.h>
+#endif
+
+#define SHA2_SALT_SIZE 8
+
+static int hash_ssha256(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	SHA256_CTX ct;
+	unsigned char hash256[SHA256_DIGEST_LENGTH];
+	char          saltdata[SHA2_SALT_SIZE];
+	struct berval digest;
+	struct berval salt;
+
+	digest.bv_val = (char *) hash256;
+	digest.bv_len = sizeof(hash256);
+	salt.bv_val = saltdata;
+	salt.bv_len = sizeof(saltdata);
+
+	if (lutil_entropy((unsigned char *)salt.bv_val, salt.bv_len) < 0) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	SHA256_Init(&ct);
+	SHA256_Update(&ct, (const uint8_t*)passwd->bv_val, passwd->bv_len);
+	SHA256_Update(&ct, (const uint8_t*)salt.bv_val, salt.bv_len);
+	SHA256_Final(hash256, &ct);
+
+	return lutil_passwd_string64(scheme, &digest, hash, &salt);
+}
+
+static int hash_sha256(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	SHA256_CTX ct;
+	unsigned char hash256[SHA256_DIGEST_LENGTH];
+	struct berval digest;
+	digest.bv_val = (char *) hash256;
+	digest.bv_len = sizeof(hash256);
+
+	SHA256_Init(&ct);
+	SHA256_Update(&ct, (const uint8_t*)passwd->bv_val, passwd->bv_len);
+	SHA256_Final(hash256, &ct);
+
+	return lutil_passwd_string64(scheme, &digest, hash, NULL);
+}
+
+static int hash_ssha384(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	SHA384_CTX ct;
+	unsigned char hash384[SHA384_DIGEST_LENGTH];
+	char          saltdata[SHA2_SALT_SIZE];
+	struct berval digest;
+	struct berval salt;
+
+	digest.bv_val = (char *) hash384;
+	digest.bv_len = sizeof(hash384);
+	salt.bv_val = saltdata;
+	salt.bv_len = sizeof(saltdata);
+
+	if (lutil_entropy((unsigned char *)salt.bv_val, salt.bv_len) < 0) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	SHA384_Init(&ct);
+	SHA384_Update(&ct, (const uint8_t*)passwd->bv_val, passwd->bv_len);
+	SHA384_Update(&ct, (const uint8_t*)salt.bv_val, salt.bv_len);
+	SHA384_Final(hash384, &ct);
+
+	return lutil_passwd_string64(scheme, &digest, hash, &salt);
+}
+
+static int hash_sha384(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	SHA384_CTX ct;
+	unsigned char hash384[SHA384_DIGEST_LENGTH];
+	struct berval digest;
+	digest.bv_val = (char *) hash384;
+	digest.bv_len = sizeof(hash384);
+
+	SHA384_Init(&ct);
+	SHA384_Update(&ct, (const uint8_t*)passwd->bv_val, passwd->bv_len);
+	SHA384_Final(hash384, &ct);
+
+	return lutil_passwd_string64(scheme, &digest, hash, NULL);
+}
+
+static int hash_ssha512(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	SHA512_CTX ct;
+	unsigned char hash512[SHA512_DIGEST_LENGTH];
+	char          saltdata[SHA2_SALT_SIZE];
+	struct berval digest;
+	struct berval salt;
+
+	digest.bv_val = (char *) hash512;
+	digest.bv_len = sizeof(hash512);
+	salt.bv_val = saltdata;
+	salt.bv_len = sizeof(saltdata);
+
+	if (lutil_entropy((unsigned char *)salt.bv_val, salt.bv_len) < 0) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	SHA512_Init(&ct);
+	SHA512_Update(&ct, (const uint8_t*)passwd->bv_val, passwd->bv_len);
+	SHA512_Update(&ct, (const uint8_t*)salt.bv_val, salt.bv_len);
+	SHA512_Final(hash512, &ct);
+
+	return lutil_passwd_string64(scheme, &digest, hash, &salt);
+}
+
+static int hash_sha512(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	SHA512_CTX ct;
+	unsigned char hash512[SHA512_DIGEST_LENGTH];
+	struct berval digest;
+	digest.bv_val = (char *) hash512;
+	digest.bv_len = sizeof(hash512);
+
+	SHA512_Init(&ct);
+	SHA512_Update(&ct, (const uint8_t*)passwd->bv_val, passwd->bv_len);
+	SHA512_Final(hash512, &ct);
+
+	return lutil_passwd_string64(scheme, &digest, hash, NULL);
+}
+
+#ifdef SLAPD_SHA2_DEBUG
+static void chk_sha_debug(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char *cred_hash,
+	size_t cred_len,
+	int cmp_rc)
+{
+	int rc;
+	struct berval cred_b64;
+
+	cred_b64.bv_len = LUTIL_BASE64_ENCODE_LEN(cred_len) + 1;
+	cred_b64.bv_val = ber_memalloc(cred_b64.bv_len + 1);
+
+	if( cred_b64.bv_val == NULL ) {
+		return;
+	}
+
+	rc = lutil_b64_ntop(
+		(unsigned char *) cred_hash, cred_len,
+		cred_b64.bv_val, cred_b64.bv_len );
+
+	if( rc < 0 ) {
+		ber_memfree(cred_b64.bv_val);
+		return;
+	}
+
+	fprintf(stderr, "Validating password\n");
+	fprintf(stderr, "  Hash scheme:\t\t%s\n", scheme->bv_val);
+	fprintf(stderr, "  Password to validate: %s\n", cred->bv_val);
+	fprintf(stderr, "  Password hash:\t%s\n", cred_b64.bv_val);
+	fprintf(stderr, "  Stored password hash:\t%s\n", passwd->bv_val);
+	fprintf(stderr, "  Result:\t\t%s\n", cmp_rc ?  "do not match" : "match");
+
+	ber_memfree(cred_b64.bv_val);
+}
+#endif
+
+static int chk_ssha256(
+	const struct berval *scheme, /* Scheme of hashed reference password */
+	const struct berval *passwd, /* Hashed reference password to check against */
+	const struct berval *cred, /* user-supplied password to check */
+	const char **text )
+{
+	SHA256_CTX SHAcontext;
+	unsigned char SHAdigest[SHA256_DIGEST_LENGTH];
+	int rc;
+	unsigned char *orig_pass = NULL;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len <= sizeof(SHAdigest)) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* base64 un-encode password */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if( rc <= (int)(sizeof(SHAdigest)) ) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	SHA256_Init(&SHAcontext);
+	SHA256_Update(&SHAcontext,
+		(const unsigned char *) cred->bv_val, cred->bv_len);
+	SHA256_Update(&SHAcontext,
+		(const unsigned char *) &orig_pass[sizeof(SHAdigest)],
+		rc - sizeof(SHAdigest));
+	SHA256_Final(SHAdigest, &SHAcontext);
+
+	/* compare */
+	rc = memcmp((char *)orig_pass, (char *)SHAdigest, sizeof(SHAdigest));
+	ber_memfree(orig_pass);
+	return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+static int chk_sha256(
+	const struct berval *scheme, /* Scheme of hashed reference password */
+	const struct berval *passwd, /* Hashed reference password to check against */
+	const struct berval *cred, /* user-supplied password to check */
+	const char **text )
+{
+	SHA256_CTX SHAcontext;
+	unsigned char SHAdigest[SHA256_DIGEST_LENGTH];
+	int rc;
+	unsigned char *orig_pass = NULL;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len < sizeof(SHAdigest)) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* base64 un-encode password */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if( rc != sizeof(SHAdigest) ) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	SHA256_Init(&SHAcontext);
+	SHA256_Update(&SHAcontext,
+		(const unsigned char *) cred->bv_val, cred->bv_len);
+	SHA256_Final(SHAdigest, &SHAcontext);
+
+	/* compare */
+	rc = memcmp((char *)orig_pass, (char *)SHAdigest, sizeof(SHAdigest));
+#ifdef SLAPD_SHA2_DEBUG
+	chk_sha_debug(scheme, passwd, cred, (char *)SHAdigest, sizeof(SHAdigest), rc);
+#endif
+	ber_memfree(orig_pass);
+	return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+static int chk_ssha384(
+	const struct berval *scheme, /* Scheme of hashed reference password */
+	const struct berval *passwd, /* Hashed reference password to check against */
+	const struct berval *cred, /* user-supplied password to check */
+	const char **text )
+{
+	SHA384_CTX SHAcontext;
+	unsigned char SHAdigest[SHA384_DIGEST_LENGTH];
+	int rc;
+	unsigned char *orig_pass = NULL;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len <= sizeof(SHAdigest)) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* base64 un-encode password */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if( rc <= (int)(sizeof(SHAdigest)) ) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	SHA384_Init(&SHAcontext);
+	SHA384_Update(&SHAcontext,
+		(const unsigned char *) cred->bv_val, cred->bv_len);
+	SHA384_Update(&SHAcontext,
+		(const unsigned char *) &orig_pass[sizeof(SHAdigest)],
+		rc - sizeof(SHAdigest));
+	SHA384_Final(SHAdigest, &SHAcontext);
+
+	/* compare */
+	rc = memcmp((char *)orig_pass, (char *)SHAdigest, sizeof(SHAdigest));
+	ber_memfree(orig_pass);
+	return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+static int chk_sha384(
+	const struct berval *scheme, /* Scheme of hashed reference password */
+	const struct berval *passwd, /* Hashed reference password to check against */
+	const struct berval *cred, /* user-supplied password to check */
+	const char **text )
+{
+	SHA384_CTX SHAcontext;
+	unsigned char SHAdigest[SHA384_DIGEST_LENGTH];
+	int rc;
+	unsigned char *orig_pass = NULL;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len < sizeof(SHAdigest)) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* base64 un-encode password */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if( rc != sizeof(SHAdigest) ) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	SHA384_Init(&SHAcontext);
+	SHA384_Update(&SHAcontext,
+		(const unsigned char *) cred->bv_val, cred->bv_len);
+	SHA384_Final(SHAdigest, &SHAcontext);
+
+	/* compare */
+	rc = memcmp((char *)orig_pass, (char *)SHAdigest, sizeof(SHAdigest));
+#ifdef SLAPD_SHA2_DEBUG
+	chk_sha_debug(scheme, passwd, cred, (char *)SHAdigest, sizeof(SHAdigest), rc);
+#endif
+	ber_memfree(orig_pass);
+	return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+static int chk_ssha512(
+	const struct berval *scheme, /* Scheme of hashed reference password */
+	const struct berval *passwd, /* Hashed reference password to check against */
+	const struct berval *cred, /* user-supplied password to check */
+	const char **text )
+{
+	SHA512_CTX SHAcontext;
+	unsigned char SHAdigest[SHA512_DIGEST_LENGTH];
+	int rc;
+	unsigned char *orig_pass = NULL;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len <= sizeof(SHAdigest)) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* base64 un-encode password */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if( rc <= (int)(sizeof(SHAdigest)) ) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	SHA512_Init(&SHAcontext);
+	SHA512_Update(&SHAcontext,
+		(const unsigned char *) cred->bv_val, cred->bv_len);
+	SHA512_Update(&SHAcontext,
+		(const unsigned char *) &orig_pass[sizeof(SHAdigest)],
+		rc - sizeof(SHAdigest));
+	SHA512_Final(SHAdigest, &SHAcontext);
+
+	/* compare */
+	rc = memcmp((char *)orig_pass, (char *)SHAdigest, sizeof(SHAdigest));
+	ber_memfree(orig_pass);
+	return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+static int chk_sha512(
+	const struct berval *scheme, /* Scheme of hashed reference password */
+	const struct berval *passwd, /* Hashed reference password to check against */
+	const struct berval *cred, /* user-supplied password to check */
+	const char **text )
+{
+	SHA512_CTX SHAcontext;
+	unsigned char SHAdigest[SHA512_DIGEST_LENGTH];
+	int rc;
+	unsigned char *orig_pass = NULL;
+	size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
+
+	/* safety check */
+	if (decode_len < sizeof(SHAdigest)) {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* base64 un-encode password */
+	orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
+
+	if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
+
+	rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
+
+	if( rc != sizeof(SHAdigest) ) {
+		ber_memfree(orig_pass);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* hash credentials with salt */
+	SHA512_Init(&SHAcontext);
+	SHA512_Update(&SHAcontext,
+		(const unsigned char *) cred->bv_val, cred->bv_len);
+	SHA512_Final(SHAdigest, &SHAcontext);
+
+	/* compare */
+	rc = memcmp((char *)orig_pass, (char *)SHAdigest, sizeof(SHAdigest));
+#ifdef SLAPD_SHA2_DEBUG
+	chk_sha_debug(scheme, passwd, cred, (char *)SHAdigest, sizeof(SHAdigest), rc);
+#endif
+	ber_memfree(orig_pass);
+	return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+}
+
+const struct berval ssha256scheme = BER_BVC("{SSHA256}");
+const struct berval sha256scheme = BER_BVC("{SHA256}");
+const struct berval ssha384scheme = BER_BVC("{SSHA384}");
+const struct berval sha384scheme = BER_BVC("{SHA384}");
+const struct berval ssha512scheme = BER_BVC("{SSHA512}");
+const struct berval sha512scheme = BER_BVC("{SHA512}");
+
+int init_module(int argc, char *argv[]) {
+	int result = 0;
+	result = lutil_passwd_add( (struct berval *)&ssha256scheme, chk_ssha256, hash_ssha256 );
+	if (result != 0) return result;
+	result = lutil_passwd_add( (struct berval *)&sha256scheme, chk_sha256, hash_sha256 );
+	if (result != 0) return result;
+	result = lutil_passwd_add( (struct berval *)&ssha384scheme, chk_ssha384, hash_ssha384 );
+	if (result != 0) return result;
+	result = lutil_passwd_add( (struct berval *)&sha384scheme, chk_sha384, hash_sha384 );
+	if (result != 0) return result;
+	result = lutil_passwd_add( (struct berval *)&ssha512scheme, chk_ssha512, hash_ssha512 );
+	if (result != 0) return result;
+	result = lutil_passwd_add( (struct berval *)&sha512scheme, chk_sha512, hash_sha512 );
+	return result;
+}
diff --git a/contrib/slapd-modules/passwd/slapd-pw-radius.5 b/contrib/slapd-modules/passwd/slapd-pw-radius.5
new file mode 100644
index 0000000..9a74847
--- /dev/null
+++ b/contrib/slapd-modules/passwd/slapd-pw-radius.5
@@ -0,0 +1,110 @@
+.TH SLAPD-PW-RADIUS 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2015-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapd-pw-radius \- Radius backend password module to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.RS
+.LP
+.B moduleload
+.B pw-radius
+.I /path/to/radius.conf
+.RE
+.SH DESCRIPTION
+.LP
+The
+.B pw-radius
+module to
+.BR slapd (8)
+provides support for using a RADIUS infrastructure as backend to
+verify the password provided in Simple Bind operations to OpenLDAP.
+.LP
+It does so by providing an additional password scheme for use in slapd:
+.RS
+.TP
+.B {RADIUS}
+RADIUS password scheme
+.RE
+.LP
+Unlike in other password schemes, the value following the scheme is not
+a - potentially hashed - password, but the name of the corresponding
+RADIUS user in the RADIUS infrastructure.
+.LP
+This value, together with the password used in the Simple Bind operation,
+will be sent to the RADIUS server for authentication.
+.LP
+If the RADIUS server successfully authenticates the user,
+then the password verification succeeds, resulting in the LDAP Bind
+operation's success.
+.LP
+Conversely, failed RADIUS authentications leads to failing LDAP Binds.
+
+.SH CONFIGURATION
+The
+.B pw-radius
+module needs no configuration beyond the additional
+.I filename
+argument to
+.BR slapd.conf (5)'s
+.B moduleload
+directive.
+This filename is expected to point to a valid
+.BR radius.conf (5).
+file adhering to
+.BR libradius (3).
+.LP
+After loading the module, the password scheme
+.B {RADIUS}
+will be recognised in values of the
+.I userPassword
+attribute.
+
+.SH NOTES
+Owing to its construction, using the
+.B {RADIUS}
+scheme as argument to the
+.BR password-hash
+option in
+.BR slapd.conf (5)
+does not make much sense, because of the scheme's construction.
+.LP
+This also applies to the use of the
+.B {RADIUS}
+scheme in
+.B slappasswd
+or
+.BR ldappasswd .
+
+
+.SH EXAMPLES
+To indicate that Simple Bind operations shall use the RADIUS user
+.B johndoe
+when validating passwords against the RADIUS infrastructure,
+set a user's LDAP attribute userPassword to:
+.EX
+.LP
+userPassword: {RADIUS}johndoe
+.EE
+
+.SH LIMITATIONS
+Due to the way the configuration is loaded (additional argument
+to slapd.conf's moduleload directive), this module cannot be used
+with table-driven configuration.
+
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR libradius (3)
+.BR ldap (3),
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.SH ACKNOWLEDGEMENTS
+This manual page has been written by Peter Marschall.
+.LP
+.B OpenLDAP
+is developed and maintained by The OpenLDAP Project (http://www.openldap.org/).
+.B OpenLDAP
+is derived from University of Michigan LDAP 3.3 Release.
diff --git a/contrib/slapd-modules/passwd/totp/Makefile b/contrib/slapd-modules/passwd/totp/Makefile
new file mode 100644
index 0000000..f7dff4b
--- /dev/null
+++ b/contrib/slapd-modules/passwd/totp/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = pw-totp.la
+MANPAGES = slapo-totp.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all:		$(PROGRAMS)
+
+pw-totp.la:	slapd-totp.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/passwd/totp/README b/contrib/slapd-modules/passwd/totp/README
new file mode 100644
index 0000000..e6867f2
--- /dev/null
+++ b/contrib/slapd-modules/passwd/totp/README
@@ -0,0 +1,87 @@
+TOTP OpenLDAP support
+----------------------
+
+slapd-totp.c provides support for RFC 6238 TOTP Time-based One
+Time Passwords in OpenLDAP using SHA-1, SHA-256, and SHA-512.
+For instance, one could have the LDAP attribute:
+
+userPassword: {TOTP1}GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ
+
+which encodes the key '12345678901234567890'.
+
+It can also encode credentials consisting of a TOTP and a static
+password.  The format for this is:
+
+userPassword: {TOTP1ANDPW}GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ|<some_other_passwd>
+
+where <some_other_passwd> can be any scheme currently understood
+by OpenLDAP.  For example, using '{SHA}5en6G6MezRroT3XKqkdPOmY/BfQ='
+would encode the above TOTP with a static password of 'secret'.  To
+authenticate using this scheme, enter the static password immediately
+followed by the TOTP, for example 'secret123456'.
+
+
+Building
+--------
+
+1) Customize the LDAP_SRC variable in Makefile to point to the OpenLDAP
+source root.
+
+2) Run 'make' to produce slapd-totp.so
+
+3) Copy slapd-totp.so somewhere permanent.
+
+4) Edit your slapd.conf (eg. /etc/ldap/slapd.conf), and add:
+
+moduleload ...path/to/slapd-totp.so
+
+5) This module replaces the function of the slapo-lastbind overlay. You
+cannot use that overlay on the same database as this one.
+
+6) Restart slapd.
+
+
+Configuring
+-----------
+
+The {TOTP1}, {TOTP256}, {TOTP512}, {TOTP1ANDPW}, {TOTP256ANDPW},
+and {TOTP512ANDPW} password schemes should now be recognised.
+
+You can also tell OpenLDAP to use one of these new schemes when processing LDAP
+Password Modify Extended Operations, thanks to the password-hash option in
+slapd.conf. For example:
+
+password-hash	{TOTP1}
+
+TOTP password schemes will only work on databases that have a rootdn and the
+totp overlay configured:
+
+database mdb
+rootdn "..."
+...
+
+overlay totp
+
+
+
+Testing
+-------
+
+The TOTP1 algorithm is compatible with Google Authenticator.
+
+---
+
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2015-2022 The OpenLDAP Foundation.
+Portions Copyright 2015 by Howard Chu, Symas Corp.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/passwd/totp/slapd-totp.c b/contrib/slapd-modules/passwd/totp/slapd-totp.c
new file mode 100644
index 0000000..25081e1
--- /dev/null
+++ b/contrib/slapd-modules/passwd/totp/slapd-totp.c
@@ -0,0 +1,1000 @@
+/* slapd-totp.c - Password module and overlay for TOTP */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2015-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2015 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work includes code from the lastbind overlay.
+ */
+
+#include <portable.h>
+
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
+#include <lber.h>
+#include <lber_pvt.h>
+#include "lutil.h"
+#include <ac/stdlib.h>
+#include <ac/ctype.h>
+#include <ac/string.h>
+/* include socket.h to get sys/types.h and/or winsock2.h */
+#include <ac/socket.h>
+
+#if HAVE_OPENSSL
+#include <openssl/sha.h>
+#include <openssl/hmac.h>
+
+#define TOTP_SHA512_DIGEST_LENGTH	SHA512_DIGEST_LENGTH
+#define TOTP_SHA1	EVP_sha1()
+#define TOTP_SHA256	EVP_sha256()
+#define TOTP_SHA512	EVP_sha512()
+#define TOTP_HMAC_CTX	HMAC_CTX *
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+static HMAC_CTX *HMAC_CTX_new(void)
+{
+	HMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
+	if (ctx != NULL) {
+		HMAC_CTX_init(ctx);
+	}
+	return ctx;
+}
+
+static void HMAC_CTX_free(HMAC_CTX *ctx)
+{
+	if (ctx != NULL) {
+		HMAC_CTX_cleanup(ctx);
+		OPENSSL_free(ctx);
+	}
+}
+#endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */
+
+#define HMAC_setup(ctx, key, len, hash) \
+	ctx = HMAC_CTX_new(); \
+	HMAC_Init_ex(ctx, key, len, hash, 0)
+#define HMAC_crunch(ctx, buf, len)	HMAC_Update(ctx, buf, len)
+#define HMAC_finish(ctx, dig, dlen) \
+	HMAC_Final(ctx, dig, &dlen); \
+	HMAC_CTX_free(ctx)
+
+#elif HAVE_GNUTLS
+#include <nettle/hmac.h>
+
+#define TOTP_SHA512_DIGEST_LENGTH	SHA512_DIGEST_SIZE
+#define TOTP_SHA1	&nettle_sha1
+#define TOTP_SHA256	&nettle_sha256
+#define TOTP_SHA512	&nettle_sha512
+#define TOTP_HMAC_CTX	struct hmac_sha512_ctx
+
+#define HMAC_setup(ctx, key, len, hash)	\
+	const struct nettle_hash *h=hash;\
+	hmac_set_key(&ctx.outer, &ctx.inner, &ctx.state, h, len, key)
+#define HMAC_crunch(ctx, buf, len)	hmac_update(&ctx.state, h, len, buf)
+#define HMAC_finish(ctx, dig, dlen) \
+	hmac_digest(&ctx.outer, &ctx.inner, &ctx.state, h, h->digest_size, dig);\
+	dlen = h->digest_size
+
+#else
+# error Unsupported crypto backend.
+#endif
+
+#include "slap.h"
+#include "slap-config.h"
+
+static LUTIL_PASSWD_CHK_FUNC chk_totp1, chk_totp256, chk_totp512,
+	chk_totp1andpw, chk_totp256andpw, chk_totp512andpw;
+static LUTIL_PASSWD_HASH_FUNC hash_totp1, hash_totp256, hash_totp512,
+	hash_totp1andpw, hash_totp256andpw, hash_totp512andpw;
+static const struct berval scheme_totp1 = BER_BVC("{TOTP1}");
+static const struct berval scheme_totp256 = BER_BVC("{TOTP256}");
+static const struct berval scheme_totp512 = BER_BVC("{TOTP512}");
+static const struct berval scheme_totp1andpw = BER_BVC("{TOTP1ANDPW}");
+static const struct berval scheme_totp256andpw = BER_BVC("{TOTP256ANDPW}");
+static const struct berval scheme_totp512andpw = BER_BVC("{TOTP512ANDPW}");
+
+static AttributeDescription *ad_authTimestamp;
+
+/* This is the definition used by ISODE, as supplied to us in
+ * ITS#6238 Followup #9
+ */
+static struct schema_info {
+	char *def;
+	AttributeDescription **ad;
+} totp_OpSchema[] = {
+	{	"( 1.3.6.1.4.1.453.16.2.188 "
+		"NAME 'authTimestamp' "
+		"DESC 'last successful authentication using any method/mech' "
+		"EQUALITY generalizedTimeMatch "
+		"ORDERING generalizedTimeOrderingMatch "
+		"SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
+		"SINGLE-VALUE NO-USER-MODIFICATION USAGE dsaOperation )",
+		&ad_authTimestamp},
+	{ NULL, NULL }
+};
+
+/* RFC3548 base32 encoding/decoding */
+
+static const char Base32[] =
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
+static const char Pad32 = '=';
+
+static int
+totp_b32_ntop(
+	u_char const *src,
+	size_t srclength,
+	char *target,
+	size_t targsize)
+{
+	size_t datalength = 0;
+	u_char input0;
+	u_int input1;	/* assumed to be at least 32 bits */
+	u_char output[8];
+	int i;
+
+	while (4 < srclength) {
+		if (datalength + 8 > targsize)
+			return (-1);
+		input0 = *src++;
+		input1 = *src++;
+		input1 <<= 8;
+		input1 |= *src++;
+		input1 <<= 8;
+		input1 |= *src++;
+		input1 <<= 8;
+		input1 |= *src++;
+		srclength -= 5;
+
+		for (i=7; i>1; i--) {
+			output[i] = input1 & 0x1f;
+			input1 >>= 5;
+		}
+		output[0] = input0 >> 3;
+		output[1] = (input0 & 0x07) << 2 | input1;
+
+		for (i=0; i<8; i++)
+			target[datalength++] = Base32[output[i]];
+	}
+    
+	/* Now we worry about padding. */
+	if (0 != srclength) {
+		static const int outlen[] = { 2,4,5,7 };
+		int n;
+		if (datalength + 8 > targsize)
+			return (-1);
+
+		/* Get what's left. */
+		input1 = *src++;
+		for (i = 1; i < srclength; i++) {
+			input1 <<= 8;
+			input1 |= *src++;
+		}
+		input1 <<= 8 * (4-srclength);
+		n = outlen[srclength-1];
+		for (i=0; i<n; i++) {
+			target[datalength++] = Base32[(input1 & 0xf8000000) >> 27];
+			input1 <<= 5;
+		}
+		for (; i<8; i++)
+			target[datalength++] = Pad32;
+	}
+	if (datalength >= targsize)
+		return (-1);
+	target[datalength] = '\0';	/* Returned value doesn't count \0. */
+	return (datalength);
+}
+
+/* converts characters, eight at a time, starting at src
+   from base - 32 numbers into five 8 bit bytes in the target area.
+   it returns the number of data bytes stored at the target, or -1 on error.
+ */
+
+static int
+totp_b32_pton(
+	char const *src,
+	u_char *target, 
+	size_t targsize)
+{
+	int tarindex, state, ch;
+	char *pos;
+
+	state = 0;
+	tarindex = 0;
+
+	while ((ch = *src++) != '\0') {
+		if (ch == Pad32)
+			break;
+
+		pos = strchr(Base32, ch);
+		if (pos == 0) 		/* A non-base32 character. */
+			return (-1);
+
+		switch (state) {
+		case 0:
+			if (target) {
+				if ((size_t)tarindex >= targsize)
+					return (-1);
+				target[tarindex] = (pos - Base32) << 3;
+			}
+			state = 1;
+			break;
+		case 1:
+			if (target) {
+				if ((size_t)tarindex + 1 >= targsize)
+					return (-1);
+				target[tarindex]   |=  (pos - Base32) >> 2;
+				target[tarindex+1]  = ((pos - Base32) & 0x3)
+							<< 6 ;
+			}
+			tarindex++;
+			state = 2;
+			break;
+		case 2:
+			if (target) {
+				target[tarindex]   |=  (pos - Base32) << 1;
+			}
+			state = 3;
+			break;
+		case 3:
+			if (target) {
+				if ((size_t)tarindex + 1 >= targsize)
+					return (-1);
+				target[tarindex] |= (pos - Base32) >> 4;
+				target[tarindex+1]  = ((pos - Base32) & 0xf)
+							<< 4 ;
+			}
+			tarindex++;
+			state = 4;
+			break;
+		case 4:
+			if (target) {
+				if ((size_t)tarindex + 1 >= targsize)
+					return (-1);
+				target[tarindex] |= (pos - Base32) >> 1;
+				target[tarindex+1]  = ((pos - Base32) & 0x1)
+							<< 7 ;
+			}
+			tarindex++;
+			state = 5;
+			break;
+		case 5:
+			if (target) {
+				target[tarindex]   |=  (pos - Base32) << 2;
+			}
+			state = 6;
+			break;
+		case 6:
+			if (target) {
+				if ((size_t)tarindex + 1 >= targsize)
+					return (-1);
+				target[tarindex] |= (pos - Base32) >> 3;
+				target[tarindex+1]  = ((pos - Base32) & 0x7)
+							<< 5 ;
+			}
+			tarindex++;
+			state = 7;
+			break;
+		case 7:
+			if (target) {
+				target[tarindex]   |=  (pos - Base32);
+			}
+			state = 0;
+			tarindex++;
+			break;
+
+		default:
+			abort();
+		}
+	}
+
+	/*
+	 * We are done decoding Base-32 chars.  Let's see if we ended
+	 * on a byte boundary, and/or with erroneous trailing characters.
+	 */
+
+	if (ch == Pad32) {		/* We got a pad char. */
+		int i = 0;
+
+		/* count pad chars */
+		for (; ch; ch = *src++) {
+			if (ch != Pad32)
+				return (-1);
+			i++;
+		}
+		/* there are only 4 valid ending states with a
+		 * pad character, make sure the number of pads is valid.
+		 */
+		switch(state) {
+		case 2:	if (i != 6) return -1;
+			break;
+		case 4: if (i != 4) return -1;
+			break;
+		case 5: if (i != 3) return -1;
+			break;
+		case 7: if (i != 1) return -1;
+			break;
+		default:
+			return -1;
+		}
+		/*
+		 * Now make sure that the "extra" bits that slopped past
+		 * the last full byte were zeros.  If we don't check them,
+		 * they become a subliminal channel.
+		 */
+		if (target && target[tarindex] != 0)
+			return (-1);
+	} else {
+		/*
+		 * We ended by seeing the end of the string.  Make sure we
+		 * have no partial bytes lying around.
+		 */
+		if (state != 0)
+			return (-1);
+	}
+
+	return (tarindex);
+}
+
+/* RFC6238 TOTP */
+
+
+typedef struct myval {
+	ber_len_t mv_len;
+	void *mv_val;
+} myval;
+
+static void do_hmac(
+	const void *hash,
+	myval *key,
+	myval *data,
+	myval *out)
+{
+	TOTP_HMAC_CTX ctx;
+	unsigned int digestLen;
+
+	HMAC_setup(ctx, key->mv_val, key->mv_len, hash);
+	HMAC_crunch(ctx, data->mv_val, data->mv_len);
+	HMAC_finish(ctx, out->mv_val, digestLen);
+	out->mv_len = digestLen;
+}
+
+static const int DIGITS_POWER[] = {
+	1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000 };
+
+static void generate(
+	myval *key,
+	uint64_t tval,
+	int digits,
+	myval *out,
+	const void *mech)
+{
+	unsigned char digest[TOTP_SHA512_DIGEST_LENGTH];
+	myval digval;
+	myval data;
+	unsigned char msg[8];
+	int i, offset, res, otp;
+
+#if WORDS_BIGENDIAN
+	*(uint64_t *)msg = tval;
+#else
+	for (i=7; i>=0; i--) {
+		msg[i] = tval & 0xff;
+		tval >>= 8;
+	}
+#endif
+
+	data.mv_val = msg;
+	data.mv_len = sizeof(msg);
+
+	digval.mv_val = digest;
+	digval.mv_len = sizeof(digest);
+	do_hmac(mech, key, &data, &digval);
+
+	offset = digest[digval.mv_len-1] & 0xf;
+	res = ((digest[offset] & 0x7f) << 24) |
+			((digest[offset+1] & 0xff) << 16) |
+			((digest[offset+2] & 0xff) << 8) |
+			(digest[offset+3] & 0xff);
+
+	otp = res % DIGITS_POWER[digits];
+	out->mv_len = snprintf(out->mv_val, out->mv_len, "%0*d", digits, otp);
+}
+
+static int totp_op_cleanup( Operation *op, SlapReply *rs );
+static int totp_bind_response( Operation *op, SlapReply *rs );
+
+#define TIME_STEP	30
+#define DIGITS	6
+#define DELIM	'|'	/* a single character */
+#define TOTP_AND_PW_HASH_SCHEME	"{SSHA}"
+
+static int chk_totp(
+	const struct berval *passwd,
+	const struct berval *cred,
+	const void *mech,
+	const char **text)
+{
+	void *ctx, *op_tmp;
+	Operation *op;
+	Entry *e;
+	Attribute *a;
+	long t, told = 0;
+	int rc;
+	myval out, key;
+	char outbuf[32];
+
+	/* Find our thread context, find our Operation */
+	ctx = ldap_pvt_thread_pool_context();
+	if (ldap_pvt_thread_pool_getkey(ctx, totp_op_cleanup, &op_tmp, NULL) ||
+		!op_tmp)
+		return LUTIL_PASSWD_ERR;
+	op = op_tmp;
+
+	rc = be_entry_get_rw(op, &op->o_req_ndn, NULL, NULL, 0, &e);
+	if (rc != LDAP_SUCCESS) return LUTIL_PASSWD_ERR;
+
+	/* Make sure previous login is older than current time */
+	t = op->o_time / TIME_STEP;
+	a = attr_find(e->e_attrs, ad_authTimestamp);
+	if (a) {
+		struct lutil_tm tm;
+		struct lutil_timet tt;
+		if (lutil_parsetime(a->a_vals[0].bv_val, &tm) == 0 &&
+			lutil_tm2time(&tm, &tt) == 0) {
+			told = tt.tt_sec / TIME_STEP;
+			if (told >= t)
+				rc = LUTIL_PASSWD_ERR;
+		}
+		if (!rc) {	/* seems OK, remember old stamp */
+			slap_callback *sc;
+			for (sc = op->o_callback; sc; sc = sc->sc_next) {
+				if (sc->sc_response == totp_bind_response) {
+					sc->sc_private = ber_dupbv_x(NULL, &a->a_vals[0], op->o_tmpmemctx);
+					break;
+				}
+			}
+		}
+	}	/* else no previous login, 1st use is OK */
+
+	be_entry_release_r(op, e);
+	if (rc) return rc;
+
+	/* Key is stored in base32 */
+	key.mv_len = passwd->bv_len * 5 / 8;
+	key.mv_val = ber_memalloc(key.mv_len+1);
+
+	if (!key.mv_val)
+		return LUTIL_PASSWD_ERR;
+
+	rc = totp_b32_pton(passwd->bv_val, key.mv_val, key.mv_len);
+	if (rc < 1) {
+		rc = LUTIL_PASSWD_ERR;
+		goto out;
+	}
+
+	out.mv_val = outbuf;
+	out.mv_len = sizeof(outbuf);
+	generate(&key, t, DIGITS, &out, mech);
+
+	/* compare */
+	if (out.mv_len != cred->bv_len) {
+		rc = LUTIL_PASSWD_ERR;
+		goto out;
+	}
+
+	rc = memcmp(out.mv_val, cred->bv_val, out.mv_len) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+
+	/* If current value doesn't match, try again with previous value
+	 * but only if the most recent login is older than the previous
+	 * time step but still set */
+	if (rc == LUTIL_PASSWD_ERR && told < t - 1 && told > 0) {
+		out.mv_val = outbuf;
+		out.mv_len = sizeof(outbuf);
+		generate(&key, t - 1, DIGITS, &out, mech);
+		/* compare */
+		if (out.mv_len != cred->bv_len)
+			goto out;
+		rc = memcmp(out.mv_val, cred->bv_val, out.mv_len) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
+	}
+
+out:
+	memset(key.mv_val, 0, key.mv_len);
+	ber_memfree(key.mv_val);
+	return rc;
+}
+
+static int chk_totp_and_pw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text,
+	const void *mech)
+{
+	char *s;
+	int rc = LUTIL_PASSWD_ERR, rc_pass, rc_otp;
+	ber_len_t len;
+	struct berval cred_pass, cred_otp, passwd_pass, passwd_otp;
+
+	/* Check credential length, no point to continue if too short */
+	if (cred->bv_len <= DIGITS)
+		return rc;
+
+	/* The OTP seed of the stored password */
+	s = strchr(passwd->bv_val, DELIM);
+	if (s) {
+		len = s - passwd->bv_val;
+	} else {
+		return rc;
+	}
+	if (!ber_str2bv(passwd->bv_val, len, 1, &passwd_otp))
+		return rc;
+
+	/* The password part of the stored password */
+	s++;
+	ber_str2bv(s, 0, 0, &passwd_pass);
+
+	/* The OTP part of the entered credential */
+	ber_str2bv(&cred->bv_val[cred->bv_len - DIGITS], DIGITS, 0, &cred_otp);
+
+	/* The password part of the entered credential */
+	if (!ber_str2bv(cred->bv_val, cred->bv_len - DIGITS, 0, &cred_pass)) {
+		/* Cleanup */
+		memset(passwd_otp.bv_val, 0, passwd_otp.bv_len);
+		ber_memfree(passwd_otp.bv_val);
+		return rc;
+	}
+
+	rc_otp = chk_totp(&passwd_otp, &cred_otp, mech, text);
+	rc_pass = lutil_passwd(&passwd_pass, &cred_pass, NULL, text);
+	if (rc_otp == LUTIL_PASSWD_OK && rc_pass == LUTIL_PASSWD_OK)
+		rc = LUTIL_PASSWD_OK;
+
+	/* Cleanup and return */
+	memset(passwd_otp.bv_val, 0, passwd_otp.bv_len);
+	ber_memfree(passwd_otp.bv_val);
+
+	return rc;
+}
+
+static int chk_totp1(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_totp(passwd, cred, TOTP_SHA1, text);
+}
+
+static int chk_totp256(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_totp(passwd, cred, TOTP_SHA256, text);
+}
+
+static int chk_totp512(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_totp(passwd, cred, TOTP_SHA512, text);
+}
+
+static int chk_totp1andpw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_totp_and_pw(scheme, passwd, cred, text, TOTP_SHA1);
+}
+
+static int chk_totp256andpw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_totp_and_pw(scheme, passwd, cred, text, TOTP_SHA256);
+}
+
+static int chk_totp512andpw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text)
+{
+	return chk_totp_and_pw(scheme, passwd, cred, text, TOTP_SHA512);
+}
+
+static int passwd_string32(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash)
+{
+	int b32len = (passwd->bv_len + 4)/5 * 8;
+	int rc;
+	hash->bv_len = scheme->bv_len + b32len;
+	hash->bv_val = ber_memalloc(hash->bv_len + 1);
+	AC_MEMCPY(hash->bv_val, scheme->bv_val, scheme->bv_len);
+	rc = totp_b32_ntop((unsigned char *)passwd->bv_val, passwd->bv_len,
+		hash->bv_val + scheme->bv_len, b32len+1);
+	if (rc < 0) {
+		ber_memfree(hash->bv_val);
+		hash->bv_val = NULL;
+		return LUTIL_PASSWD_ERR;
+	}
+	return LUTIL_PASSWD_OK;
+}
+
+static int hash_totp_and_pw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+	struct berval otp, pass, hash_otp, hash_pass;
+	ber_len_t len;
+	char *s;
+	int rc = LUTIL_PASSWD_ERR;
+
+	/* The OTP seed part */
+	s = strchr(passwd->bv_val, DELIM);
+	if (s) {
+		len = s - passwd->bv_val;
+	} else {
+		return rc;
+	}
+	if (!ber_str2bv(passwd->bv_val, len, 0, &otp))
+		return rc;
+
+	/* The static password part */
+	s++;
+	ber_str2bv(s, 0, 0, &pass);
+
+	/* Hash the OTP seed */
+	rc = passwd_string32(scheme, &otp, &hash_otp);
+
+	/* If successful, hash the static password, else cleanup and return */
+	if (rc == LUTIL_PASSWD_OK) {
+		rc = lutil_passwd_hash(&pass, TOTP_AND_PW_HASH_SCHEME,
+			&hash_pass, text);
+	} else {
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* If successful, allocate memory to combine them, else cleanup
+	 *  and return */
+	if (rc == LUTIL_PASSWD_OK) {
+		/* Add 1 character to bv_len to hold DELIM */
+		hash->bv_len = hash_pass.bv_len + hash_otp.bv_len + 1;
+		hash->bv_val = ber_memalloc(hash->bv_len + 1);
+		if (!hash->bv_val)
+			rc = LUTIL_PASSWD_ERR;
+	} else {
+		memset(hash_otp.bv_val, 0, hash_otp.bv_len);
+		ber_memfree(hash_otp.bv_val);
+		return LUTIL_PASSWD_ERR;
+	}
+
+	/* If successful, combine the two hashes with the delimiter */
+	if (rc == LUTIL_PASSWD_OK) {
+		AC_MEMCPY(hash->bv_val, hash_otp.bv_val, hash_otp.bv_len);
+		hash->bv_val[hash_otp.bv_len] = DELIM;
+		AC_MEMCPY(hash->bv_val + hash_otp.bv_len + 1,
+			hash_pass.bv_val, hash_pass.bv_len);
+		hash->bv_val[hash->bv_len] = '\0';
+	}
+
+	/* Cleanup and return */
+	memset(hash_otp.bv_val, 0, hash_otp.bv_len);
+	memset(hash_pass.bv_val, 0, hash_pass.bv_len);
+	ber_memfree(hash_otp.bv_val);
+	ber_memfree(hash_pass.bv_val);
+
+	return rc;
+}
+
+static int hash_totp1(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+#if 0
+	if (passwd->bv_len != SHA_DIGEST_LENGTH) {
+		*text = "invalid key length";
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+	return passwd_string32(scheme, passwd, hash);
+}
+
+static int hash_totp256(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+#if 0
+	if (passwd->bv_len != SHA256_DIGEST_LENGTH) {
+		*text = "invalid key length";
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+	return passwd_string32(scheme, passwd, hash);
+}
+
+static int hash_totp512(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+#if 0
+	if (passwd->bv_len != SHA512_DIGEST_LENGTH) {
+		*text = "invalid key length";
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+	return passwd_string32(scheme, passwd, hash);
+}
+
+static int hash_totp1andpw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+#if 0
+	if (passwd->bv_len != SHA_DIGEST_LENGTH) {
+		*text = "invalid key length";
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+	return hash_totp_and_pw(scheme, passwd, hash, text);
+}
+
+static int hash_totp256andpw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+#if 0
+	if (passwd->bv_len != SHA256_DIGEST_LENGTH) {
+		*text = "invalid key length";
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+	return hash_totp_and_pw(scheme, passwd, hash, text);
+}
+
+static int hash_totp512andpw(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text)
+{
+#if 0
+	if (passwd->bv_len != SHA512_DIGEST_LENGTH) {
+		*text = "invalid key length";
+		return LUTIL_PASSWD_ERR;
+	}
+#endif
+	return hash_totp_and_pw(scheme, passwd, hash, text);
+}
+
+static int totp_op_cleanup(
+	Operation *op,
+	SlapReply *rs )
+{
+	slap_callback *cb;
+
+	/* clear out the current key */
+	ldap_pvt_thread_pool_setkey( op->o_threadctx, totp_op_cleanup,
+		NULL, 0, NULL, NULL );
+
+	/* free the callback */
+	cb = op->o_callback;
+	op->o_callback = cb->sc_next;
+	if (cb->sc_private)
+		ber_bvfree_x(cb->sc_private, op->o_tmpmemctx);
+	op->o_tmpfree( cb, op->o_tmpmemctx );
+	return 0;
+}
+
+static int
+totp_bind_response( Operation *op, SlapReply *rs )
+{
+	Modifications *mod = NULL;
+	BackendInfo *bi = op->o_bd->bd_info;
+	Entry *e;
+	int rc;
+
+	/* we're only interested if the bind was successful */
+	if ( rs->sr_err != LDAP_SUCCESS )
+		return SLAP_CB_CONTINUE;
+
+	rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
+	op->o_bd->bd_info = bi;
+
+	if ( rc != LDAP_SUCCESS ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	{
+		time_t now;
+		Attribute *a;
+		Modifications *m;
+		char nowstr[ LDAP_LUTIL_GENTIME_BUFSIZE ];
+		struct berval timestamp;
+
+		/* get the current time */
+		now = op->o_time;
+
+		/* update the authTimestamp in the user's entry with the current time */
+		timestamp.bv_val = nowstr;
+		timestamp.bv_len = sizeof(nowstr);
+		slap_timestamp( &now, &timestamp );
+
+		m = ch_calloc( sizeof(Modifications), 1 );
+		m->sml_op = LDAP_MOD_REPLACE;
+		m->sml_flags = 0;
+		m->sml_type = ad_authTimestamp->ad_cname;
+		m->sml_desc = ad_authTimestamp;
+		m->sml_numvals = 1;
+		m->sml_values = ch_calloc( sizeof(struct berval), 2 );
+		m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
+
+		ber_dupbv( &m->sml_values[0], &timestamp );
+		ber_dupbv( &m->sml_nvalues[0], &timestamp );
+		m->sml_next = mod;
+		mod = m;
+
+		/* get authTimestamp attribute, if it exists */
+		if ((a = attr_find( e->e_attrs, ad_authTimestamp)) != NULL && op->o_callback->sc_private) {
+			struct berval *bv = op->o_callback->sc_private;
+			m = ch_calloc( sizeof(Modifications), 1 );
+			m->sml_op = LDAP_MOD_DELETE;
+			m->sml_flags = 0;
+			m->sml_type = ad_authTimestamp->ad_cname;
+			m->sml_desc = ad_authTimestamp;
+			m->sml_numvals = 1;
+			m->sml_values = ch_calloc( sizeof(struct berval), 2 );
+			m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
+
+			ber_dupbv( &m->sml_values[0], bv );
+			ber_dupbv( &m->sml_nvalues[0], bv );
+			m->sml_next = mod;
+			mod = m;
+		}
+	}
+
+	be_entry_release_r( op, e );
+
+	/* perform the update */
+	if ( mod ) {
+		Operation op2 = *op;
+		SlapReply r2 = { REP_RESULT };
+		slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
+
+		/* This is a DSA-specific opattr, it never gets replicated. */
+		op2.o_tag = LDAP_REQ_MODIFY;
+		op2.o_callback = &cb;
+		op2.orm_modlist = mod;
+		op2.o_dn = op->o_bd->be_rootdn;
+		op2.o_ndn = op->o_bd->be_rootndn;
+		op2.o_dont_replicate = 1;
+		rc = op->o_bd->be_modify( &op2, &r2 );
+		slap_mods_free( mod, 1 );
+		if (rc != LDAP_SUCCESS) {
+			/* slapd has logged this as a success already, but we
+			 * need to fail it because the authTimestamp changed
+			 * out from under us.
+			 */
+			rs->sr_err = LDAP_INVALID_CREDENTIALS;
+			connection2anonymous(op->o_conn);
+			op2 = *op;
+			op2.o_callback = NULL;
+			send_ldap_result(&op2, rs);
+			op->o_bd->bd_info = bi;
+			return rs->sr_err;
+		}
+	}
+
+	op->o_bd->bd_info = bi;
+	return SLAP_CB_CONTINUE;
+}
+
+static int totp_op_bind(
+	Operation *op,
+	SlapReply *rs )
+{
+	/* If this is a simple Bind, stash the Op pointer so our chk
+	 * function can find it. Set a cleanup callback to clear it
+	 * out when the Bind completes.
+	 */
+	if ( op->oq_bind.rb_method == LDAP_AUTH_SIMPLE ) {
+		slap_callback *cb;
+		ldap_pvt_thread_pool_setkey( op->o_threadctx,
+			totp_op_cleanup, op, 0, NULL, NULL );
+		cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
+		cb->sc_response = totp_bind_response;
+		cb->sc_cleanup = totp_op_cleanup;
+		cb->sc_next = op->o_callback;
+		op->o_callback = cb;
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static int totp_db_open(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	int rc = 0;
+
+	if (!ad_authTimestamp) {
+		const char *text = NULL;
+		rc = slap_str2ad("authTimestamp", &ad_authTimestamp, &text);
+		if (rc) {
+			rc = register_at(totp_OpSchema[0].def, totp_OpSchema[0].ad, 0 );
+			if (rc) {
+				snprintf(cr->msg, sizeof(cr->msg), "unable to find or register authTimestamp attribute: %s (%d)",
+					text, rc);
+				Debug(LDAP_DEBUG_ANY, "totp: %s.\n", cr->msg );
+			}
+			ad_authTimestamp->ad_type->sat_flags |= SLAP_AT_MANAGEABLE;
+		}
+	}
+	return rc;
+}
+
+static slap_overinst totp;
+
+int
+totp_initialize(void)
+{
+	int rc;
+
+	totp.on_bi.bi_type = "totp";
+
+	totp.on_bi.bi_db_open = totp_db_open;
+	totp.on_bi.bi_op_bind = totp_op_bind;
+
+	rc = lutil_passwd_add((struct berval *) &scheme_totp1, chk_totp1, hash_totp1);
+	if (!rc)
+		rc = lutil_passwd_add((struct berval *) &scheme_totp256, chk_totp256, hash_totp256);
+	if (!rc)
+		rc = lutil_passwd_add((struct berval *) &scheme_totp512, chk_totp512, hash_totp512);
+	if (!rc)
+		rc = lutil_passwd_add((struct berval *) &scheme_totp1andpw, chk_totp1andpw, hash_totp1andpw);
+	if (!rc)
+		rc = lutil_passwd_add((struct berval *) &scheme_totp256andpw, chk_totp256andpw, hash_totp256andpw);
+	if (!rc)
+		rc = lutil_passwd_add((struct berval *) &scheme_totp512andpw, chk_totp512andpw, hash_totp512andpw);
+	if (rc)
+		return rc;
+
+	return overlay_register(&totp);
+}
+
+int init_module(int argc, char *argv[]) {
+	return totp_initialize();
+}
diff --git a/contrib/slapd-modules/passwd/totp/slapo-totp.5 b/contrib/slapd-modules/passwd/totp/slapo-totp.5
new file mode 100644
index 0000000..7c99bf1
--- /dev/null
+++ b/contrib/slapd-modules/passwd/totp/slapo-totp.5
@@ -0,0 +1,109 @@
+.TH PW-TOTP 5 "2015/7/2" "PW-TOTP"
+.\" Copyright 2015-2022 The OpenLDAP Foundation.
+.\" Portions Copyright 2015 by Howard Chu, Symas Corp. All rights reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.SH NAME
+pw-totp \- TOTP Password handling module
+.SH SYNOPSIS
+.B moduleload
+.I pw-totp.la
+.SH DESCRIPTION
+The
+.B pw-totp
+module allows time-based one-time password, AKA "authenticator-style",
+authentication to be added to applications that use LDAP for
+authentication. In most cases no changes to the applications are needed to switch
+to this type of authentication.
+
+With this module, the password needed for a user to authenticate is calculated
+based on the current time and a key that is stored in the user's LDAP entry. Since
+the password is based on the time, it changes periodically. Once used, it cannot be
+used again so keyloggers and shoulder-surfers are thwarted. A mobile
+phone application, such as the Google Authenticator (a 'prover'), can be used
+to calculate the user's current password, which is expressed as a six-digit
+number.
+Alternatively, the value can be calculated by some other application with access
+to the user's key and delivered to the user through SMS or some other channel.
+When prompted to authenticate, the user merely enters the six-digit code provided by
+the prover.
+
+Additionally, the overlay can also authenticate TOTP passwords
+combined with a static password.  To do this, utilize one of the
+{TOTP1ANDPW}, {TOTP256ANDPW}, or {TOTP512ANDPW} password schemes
+and append the static password scheme value to the end of the
+userPassword attribute, separated by a pipe (|) character.
+
+This implementation complies with 
+.B RFC 6238 TOTP Time-based One Time Passwords
+and includes support for the SHA-1, SHA-256, and SHA-512 HMAC
+algorithms.
+
+The HMAC key used in the TOTP computation is stored in the userPassword attribute
+of the user's LDAP entry and the LDAP Password Modify Extended Operation is used to
+set and change the value. The
+value should correspond to that used by the the prover (authenticator). 
+
+.SH CONFIGURATION
+Once the module is loaded with the moduleload command from the synopsis, 
+the {TOTP1}, {TOTP256}, {TOTP512}
+{TOTP1ANDPW}, {TOTP256ANDPW}, and {TOTP512ANDPW}
+password schemes will be recognized.
+
+On the databases where your users reside you must configure the
+totp overlay:
+
+.nf
+	database mdb
+	\...
+	overlay totp
+	\...
+.fi
+
+You can tell OpenLDAP to use one of these new schemes when processing LDAP
+Password Modify Extended Operations, thanks to the password-hash option in
+slapd.conf. For example:
+
+.nf
+	password-hash   {TOTP256}
+.fi
+
+.SH NOTES
+This module includes functionality implemented by the slapo-lastbind overlay
+and cannot coexist with it in the same database. Also note
+that since the time that the last bind occurred
+is needed to properly implement TOTP, provisions need to be made to propagate
+the authTimestamp attribute to other servers that are providing authentication
+services.
+
+The hash functions for the {TOTP1ANDPW}, {TOTP256ANDPW}, and {TOTP512ANDPW}
+schemes expect the secret to be entered in the form:
+<OTP seed><DELIM><static password>, where DELIM is currently defined
+as the pipe character (|).
+
+.SH BUGS
+The time step is hard-coded to thirty seconds. This should be OK for many use cases,
+but it would be nice if the value
+could be changed with a configuration keyword or in an attribute value.
+However, after one successful initial authentication (to verify
+the clocks on the server and the user's prover are in sync) the TOTP
+value of the previous time window may also be used to successfully
+authenticate, provided no successful bind has been performed already
+in the current or previous time window.  This eliminates false
+negatives caused by user or network delays
+entering or transmitting the TOTP value.
+
+The authenticator code that is generated is hard-coded to a length of six digits.
+While in most cases
+this is probably better than the alternative length of four digits, there may be
+cases where a four-digit value is preferred.
+
+In cases where password-hash lists multiple mechanisms, the TOTP key will also
+be changed at the same time. This is likely to be undesirable behavior.
+
+.SH "SEE ALSO"
+.BR slapd.conf (5) ldappasswd (1) 
+.SH ACKNOWLEDGEMENT
+This work was developed by Howard Chu of Symas Corporation for inclusion in
+OpenLDAP Software.
+
+Password + TOTP support added by Greg Veldman on behalf of SCinet.
diff --git a/contrib/slapd-modules/ppm/CHANGELOG.md b/contrib/slapd-modules/ppm/CHANGELOG.md
new file mode 100644
index 0000000..d0e4ed7
--- /dev/null
+++ b/contrib/slapd-modules/ppm/CHANGELOG.md
@@ -0,0 +1,38 @@
+# CHANGELOG
+
+* 2021-02-23 David Coutadeur <david.coutadeur@gmail.com>
+  remove maxLength attribute (#21)
+  adapt the readme and documentation of ppm (#22)
+  prepare ppolicy10 in OpenLDAP 2.5 (#20, #23 and #24)
+  add pwdCheckModuleArg feature
+  Version 2.0
+* 2019-08-20 David Coutadeur <david.coutadeur@gmail.com>
+  adding debug symbols for ppm_test,
+  improve tests with the possibility to add username,
+  fix openldap crash when checkRDN=1 and username contains too short parts
+  Version 1.8
+* 2018-03-30 David Coutadeur <david.coutadeur@gmail.com>
+  various minor improvements provided by Tim Bishop (tdb) (compilation, test program,
+  imprvts in Makefile: new OLDAP_SOURCES variable pointing to OLDAP install. directory
+  Version 1.7
+* 2017-05-19 David Coutadeur <david.coutadeur@gmail.com>
+  Adds cracklib support
+  Readme adaptations and cleaning
+  Version 1.6
+* 2017-02-07 David Coutadeur <david.coutadeur@gmail.com>
+  Adds maxConsecutivePerClass (idea from Trevor Vaughan / tvaughan@onyxpoint.com)
+  Version 1.5
+* 2016-08-22 David Coutadeur <david.coutadeur@gmail.com>
+  Get config file from environment variable
+  Version 1.4
+* 2014-12-20 Daly Chikhaoui <dchikhaoui@janua.fr>
+  Adding checkRDN parameter
+  Version 1.3
+* 2014-10-28 David Coutadeur <david.coutadeur@gmail.com>
+  Adding maxLength parameter
+  Version 1.2
+* 2014-07-27 David Coutadeur <david.coutadeur@gmail.com>
+  Changing the configuration file and the configuration data structure
+  Version 1.1
+* 2014-04-04 David Coutadeur <david.coutadeur@gmail.com>
+  Version 1.0
diff --git a/contrib/slapd-modules/ppm/CONTRIBUTIONS.md b/contrib/slapd-modules/ppm/CONTRIBUTIONS.md
new file mode 100644
index 0000000..0d563d8
--- /dev/null
+++ b/contrib/slapd-modules/ppm/CONTRIBUTIONS.md
@@ -0,0 +1,5 @@
+# CONTRIBUTIONS
+
+* 2014 - 2021 - David Coutadeur <david.coutadeur@gmail.com> - maintainer
+* 2015 - Daly Chikhaoui - Janua <dchikhaoui@janua.fr> - contribution on RDN checks
+* 2017 - tdb - Tim Bishop - contribution on some compilation improvements
diff --git a/contrib/slapd-modules/ppm/INSTALL.md b/contrib/slapd-modules/ppm/INSTALL.md
new file mode 100644
index 0000000..6052dc6
--- /dev/null
+++ b/contrib/slapd-modules/ppm/INSTALL.md
@@ -0,0 +1,51 @@
+INSTALLATION
+============
+
+Dependencies
+------------------
+ppm is provided along with OpenLDAP sources. By default, it is available into contrib/slapd-modules.
+ - make sure both OpenLDAP sources and ppm are available for building.
+ - install cracklib development files if you want to test passwords against cracklib
+ - install pandoc if you want to build the man page
+
+
+Build
+-----
+Enter contrib/slapd-modules/ppm directory
+
+You can optionally customize some variables if you don't want the default ones:
+- prefix: prefix of the path where ppm is to be installed (defaults to /usr/local)
+- ldap_subdir: OpenLDAP specific subdirectory for modules and configurations (defaults to  openldap )
+- moduledir: where the ppm module is to be deployed (defaults to $prefix/$libexecdir/$ldap_subdir)
+- etcdir: used to compose default sysconfdir location (defaults to $prefix/etc)
+- sysconfdir: where the ppm example policy is to be deployed (defaults to $prefix/$etcdir/$ldap_subdir)
+- LDAP_SRC: path to OpenLDAP source directory
+- Options in OPTS variable:
+    CONFIG_FILE: (DEPRECATED) path to a ppm configuration file (see PPM_READ_FILE in ppm.h)
+        note: ppm configuration now lies into pwdCheckModuleArg password policy attribute
+              provided example file is only helpful as an example or for testing
+    CRACKLIB: if defined, link against cracklib
+    DEBUG: If defined, ppm logs its actions with syslog
+
+
+To build ppm, simply run these commands:
+(based upon the default prefix /usr/local of OpenLDAP)
+
+```
+make clean
+make
+make test
+make doc
+make install
+```
+
+Here is an illustrative example showing how to overload some options:
+
+```
+make clean
+make LDAP_SRC=../../.. prefix=/usr/local libdir=/usr/local/lib 
+make test LDAP_SRC=../../..
+make doc prefix=/usr/local
+make install prefix=/usr/local libdir=/usr/local/lib
+```
+
diff --git a/contrib/slapd-modules/ppm/LICENSE b/contrib/slapd-modules/ppm/LICENSE
new file mode 100644
index 0000000..03f692b
--- /dev/null
+++ b/contrib/slapd-modules/ppm/LICENSE
@@ -0,0 +1,50 @@
+OpenLDAP Public License
+
+The OpenLDAP Public License
+  Version 2.8.1, 25 November 2003
+
+Redistribution and use of this software and associated documentation
+("Software"), with or without modification, are permitted provided
+that the following conditions are met:
+
+1. Redistributions in source form must retain copyright statements
+   and notices,
+
+2. Redistributions in binary form must reproduce applicable copyright
+   statements and notices, this list of conditions, and the following
+   disclaimer in the documentation and/or other materials provided
+   with the distribution, and
+
+3. Redistributions must contain a verbatim copy of this document.
+
+The OpenLDAP Foundation may revise this license from time to time.
+Each revision is distinguished by a version number.  You may use
+this Software under terms of this license revision or under the
+terms of any subsequent revision of the license.
+
+THIS SOFTWARE IS PROVIDED BY THE OPENLDAP FOUNDATION AND ITS
+CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT
+SHALL THE OPENLDAP FOUNDATION, ITS CONTRIBUTORS, OR THE AUTHOR(S)
+OR OWNER(S) OF THE SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+The names of the authors and copyright holders must not be used in
+advertising or otherwise to promote the sale, use or other dealing
+in this Software without specific, written prior permission.  Title
+to copyright in this Software shall at all times remain with copyright
+holders.
+
+OpenLDAP is a registered trademark of the OpenLDAP Foundation.
+
+Copyright 1999-2003 The OpenLDAP Foundation, Redwood City,
+California, USA.  All rights reserved.  Permission to copy and
+distribute verbatim copies of this document is granted.
+
diff --git a/contrib/slapd-modules/ppm/Makefile b/contrib/slapd-modules/ppm/Makefile
new file mode 100644
index 0000000..7b6efad
--- /dev/null
+++ b/contrib/slapd-modules/ppm/Makefile
@@ -0,0 +1,97 @@
+# $OpenLDAP$
+# Copyright 2014 David Coutadeur, Paris.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/liblber/liblber.la $(LDAP_BUILD)/libraries/libldap/libldap.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2 -fpic
+
+# To skip linking against CRACKLIB make CRACK=no
+CRACK=yes
+CRACKDEF_yes= -DCRACKLIB
+CRACKDEF_no=
+
+CRACKLIB_yes= -lcrack
+CRACKLIB_no=
+
+CRACKDEF=$(CRACKDEF_$(CRACK))
+CRACKLIB=$(CRACKLIB_$(CRACK))
+
+DEFS = -DDEBUG $(CRACKDEF)
+# Define if using a config file:
+# -DCONFIG_FILE="\"$(sysconfdir)/$(EXAMPLE)\""
+
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS=ppm.so
+LTVER = 0:0:0
+
+LDAP_LIBS = -L$(LDAP_BUILD)/libraries/liblber/.libs -L$(LDAP_BUILD)/libraries/libldap/.libs -lldap -llber
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+etcdir = $(exec_prefix)/etc
+sysconfdir = $(etcdir)$(ldap_subdir)
+
+TEST=ppm_test
+EXAMPLE=ppm.example
+TESTS=./unit_tests.sh
+
+MANDOC=slapm-ppm.5
+MDDOC=ppm.md
+
+all: 	ppm $(TEST)
+
+$(TEST): ppm
+	$(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(LDFLAGS) $(INCS) $(LDAP_LIBS) -Wl,-rpath=. -o $(TEST) ppm_test.c $(PROGRAMS) $(LDAP_LIBS) $(CRACKLIB)
+
+ppm.o:
+	$(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) -c $(INCS) ppm.c
+
+ppm: ppm.o
+	$(CC) $(LDFLAGS) $(INCS) -shared -o $(PROGRAMS) ppm.o $(CRACKLIB)
+
+install: ppm
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS); do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)/$(moduledir) ; \
+	done
+	$(INSTALL) -m 644 $(EXAMPLE) $(DESTDIR)$(sysconfdir)/
+	$(INSTALL) -m 644 $(MANDOC) $(DESTDIR)$(man5dir)/
+#	$(INSTALL) -m 755 $(TEST) $(libdir)
+
+.PHONY: clean
+
+clean:
+	$(RM) -f ppm.o $(PROGRAMS) ppm.lo $(TEST)
+	$(RM) -rf .libs
+
+test: ppm $(TEST)
+	LDAP_SRC=$(LDAP_SRC) $(TESTS)
+
+doc:
+	pandoc $(MDDOC) -s -t man -o $(MANDOC)
+	sed -i -e 's#ETCDIR#$(DESTDIR)$(sysconfdir)#g' $(MANDOC)
+
diff --git a/contrib/slapd-modules/ppm/README.md b/contrib/slapd-modules/ppm/README.md
new file mode 100644
index 0000000..129f788
--- /dev/null
+++ b/contrib/slapd-modules/ppm/README.md
@@ -0,0 +1 @@
+See ppm.md manual and INSTALL.md
diff --git a/contrib/slapd-modules/ppm/ppm.c b/contrib/slapd-modules/ppm/ppm.c
new file mode 100644
index 0000000..801ab6c
--- /dev/null
+++ b/contrib/slapd-modules/ppm/ppm.c
@@ -0,0 +1,684 @@
+/*
+ * ppm.c for OpenLDAP
+ *
+ * See LICENSE, README and INSTALL files
+ */
+
+
+/*
+  password policy module is called with:
+  int check_password (char *pPasswd, char **ppErrStr, Entry *e, void *pArg)
+
+  *pPasswd: new password
+  **ppErrStr: pointer to the string containing the error message
+  *e: pointer to the current user entry
+  *pArg: pointer to a struct berval holding the value of pwdCheckModuleArg attr
+*/
+
+#include <stdlib.h>             // for type conversion, such as atoi...
+#include <regex.h>              // for matching allowedParameters / conf file
+#include <string.h>
+#include <ctype.h>
+#include <portable.h>
+#include <slap.h>
+#include <stdarg.h>             // for variable nb of arguments functions
+#include "ppm.h"
+
+#ifdef CRACKLIB
+#include "crack.h"              // use cracklib to check password
+#endif
+
+void
+ppm_log(int priority, const char *format, ...)
+{
+  // if DEBUG flag is set
+  // logs into syslog (for OpenLDAP) or to stdout (for tests)
+#if defined(DEBUG)
+  if(ppm_test != 1)
+  {
+    va_list syslog_args;
+    va_start(syslog_args, format);
+    vsyslog(priority, format, syslog_args);
+    va_end(syslog_args);
+  }
+  else
+  {
+    va_list stdout_args;
+    va_start(stdout_args, format);
+    vprintf(format, stdout_args);
+    printf("\n");
+    fflush(stdout);
+    va_end(stdout_args);
+  }
+#endif
+}
+
+void
+strcpy_safe(char *dest, char *src, int length_dest)
+{
+    if(src == NULL)
+    {
+        dest[0] = '\0';
+    }
+    else
+    {
+        int length_src = strlen(src);
+        int n = (length_dest < length_src) ? length_dest : length_src;
+        // Copy the string — don’t copy too many bytes.
+        strncpy(dest, src, n);
+        // Ensure null-termination.
+        dest[n] = '\0';
+    }
+}
+
+genValue*
+getValue(conf *fileConf, int numParam, char* param)
+{
+    int i = 0;
+
+    // First scan parameters
+    for (i = 0; i < numParam; i++) {
+        if ((strlen(param) == strlen(fileConf[i].param))
+            && (strncmp(param, fileConf[i].param, strlen(fileConf[i].param))
+                == 0)) {
+            return &(fileConf[i].value);
+        }
+    }
+    return NULL;
+}
+
+int maxConsPerClass(char *password, char *charClass)
+{
+  // find maximum number of consecutive class characters in the password
+
+  int bestMax = 0;
+  int max = 0;
+  int i;
+
+  for(i=0 ; i<strlen(password) ; i++)
+  {
+    if(strchr(charClass,password[i]) != NULL)
+    {
+      // current character is in class
+      max++;
+      // is the new max a better candidate to maxConsecutivePerClass?
+      if(max > bestMax)
+      {
+        // found a better maxConsecutivePerClass
+        bestMax = max;
+      }
+    }
+    else
+    {
+      // current character is not in class
+      // reinitialize max
+      max=0;
+    }
+  }
+  return bestMax;
+}
+
+void
+storeEntry(char *param, char *value, valueType valType, 
+           char *min, char *minForPoint, conf * fileConf, int *numParam)
+{
+    int i = 0;
+    int iMin;
+    int iMinForPoint;
+    if (min == NULL || strcmp(min,"") == 0)
+      iMin = 0;
+    else
+      iMin = atoi(min);
+
+    if (minForPoint == NULL || strcmp(minForPoint,"") == 0)
+      iMinForPoint = 0;
+    else
+      iMinForPoint = atoi(minForPoint);
+
+    // First scan parameters
+    for (i = 0; i < *numParam; i++) {
+        if ((strlen(param) == strlen(fileConf[i].param))
+            && (strncmp(param, fileConf[i].param, strlen(fileConf[i].param))
+                == 0)) {
+            // entry found, replace values
+            if(valType == typeInt)
+                fileConf[i].value.iVal = atoi(value);
+            else
+                strcpy_safe(fileConf[i].value.sVal, value, VALUE_MAX_LEN);
+            fileConf[i].min = iMin;
+            fileConf[i].minForPoint = iMinForPoint;
+            if(valType == typeInt)
+                ppm_log(LOG_NOTICE, "ppm:  Accepted replaced value: %d",
+                               fileConf[i].value.iVal);
+            else
+                ppm_log(LOG_NOTICE, "ppm:  Accepted replaced value: %s",
+                               fileConf[i].value.sVal);
+            return;
+        }
+    }
+    // entry not found, add values
+    strcpy_safe(fileConf[*numParam].param, param, PARAM_MAX_LEN);
+    fileConf[*numParam].iType = valType;
+    if(valType == typeInt)
+        fileConf[i].value.iVal = atoi(value);
+    else
+        strcpy_safe(fileConf[i].value.sVal, value, VALUE_MAX_LEN);
+    fileConf[*numParam].min = iMin;
+    fileConf[*numParam].minForPoint = iMinForPoint;
+    ++(*numParam);
+            if(valType == typeInt)
+                ppm_log(LOG_NOTICE, "ppm:  Accepted new value: %d",
+                               fileConf[*numParam].value.iVal);
+            else
+                ppm_log(LOG_NOTICE, "ppm:  Accepted new value: %s",
+                               fileConf[*numParam].value.sVal);
+}
+
+int
+typeParam(char* param)
+{
+    int i;
+    int n = sizeof(allowedParameters)/sizeof(params);
+
+    regex_t regex;
+    int reti;
+
+    for(i = 0 ; i < n ; i++ )
+    {
+        // Compile regular expression
+        reti = regcomp(&regex, allowedParameters[i].param, 0);
+        if (reti) {
+            ppm_log(LOG_ERR, "ppm: Cannot compile regex: %s",
+                   allowedParameters[i].param);
+            return n;
+        }
+        
+        // Execute regular expression
+        reti = regexec(&regex, param, 0, NULL, 0);
+        if (!reti)
+        {
+            regfree(&regex);
+            return i;
+        } 
+        regfree(&regex);
+    }
+    return n;
+}
+
+#ifndef PPM_READ_FILE
+
+  /*
+   * read configuration into pwdCheckModuleArg attribute
+   * */
+  static void
+  read_config_attr(conf * fileConf, int *numParam, char *ppm_config_attr)
+  {
+    int nParam = 0;       // position of found parameter in allowedParameters
+    int sAllowedParameters = sizeof(allowedParameters)/sizeof(params);
+    char arg[260*256];
+    char *token;
+    char *saveptr1;
+    char *saveptr2;
+  
+    strcpy_safe(arg, ppm_config_attr, 260*256);
+    ppm_log(LOG_NOTICE, "ppm: Parsing pwdCheckModuleArg attribute");
+    token = strtok_r(arg, "\n", &saveptr1);
+  
+    while (token != NULL) {
+        ppm_log(LOG_NOTICE, "ppm: get line: %s",token);
+        char *start = token;
+        char *word, *value;
+        char *min, *minForPoint;;
+  
+        while (isspace(*start) && isascii(*start))
+            start++;
+  
+        if (!isascii(*start))
+        {
+            token = strtok_r(NULL, "\n", &saveptr1);
+            continue;
+        }
+        if (start[0] == '#')
+        {
+            token = strtok_r(NULL, "\n", &saveptr1);
+            continue;
+        }
+  
+        if ((word = strtok_r(start, " \t", &saveptr2))) {
+            if ((value = strtok_r(NULL, " \t", &saveptr2)) == NULL)
+            {
+                saveptr2 = NULL;
+                ppm_log(LOG_NOTICE, "ppm: No value, goto next parameter");
+                token = strtok_r(NULL, "\n", &saveptr1);
+                continue;
+            }
+            if (strchr(value, '\n') != NULL)
+                strchr(value, '\n')[0] = '\0';
+            min = strtok_r(NULL, " \t", &saveptr2);
+            if (min != NULL)
+                if (strchr(min, '\n') != NULL)
+                    strchr(min, '\n')[0] = '\0';
+            minForPoint = strtok_r(NULL, " \t", &saveptr2);
+            if (minForPoint != NULL)
+                if (strchr(minForPoint, '\n') != NULL)
+                    strchr(minForPoint, '\n')[0] = '\0';
+  
+  
+            nParam = typeParam(word); // search for param in allowedParameters
+            if (nParam != sAllowedParameters) // param has been found
+            {
+                ppm_log(LOG_NOTICE,
+                   "ppm: Param = %s, value = %s, min = %s, minForPoint= %s",
+                   word, value, min, minForPoint);
+  
+                storeEntry(word, value, allowedParameters[nParam].iType,
+                           min, minForPoint, fileConf, numParam);
+            }
+            else
+            {
+                ppm_log(LOG_NOTICE,
+                   "ppm: Parameter '%s' rejected", word);
+            }
+  
+        }
+        token = strtok_r(NULL, "\n", &saveptr1);
+    }
+  
+  }
+
+#endif
+
+#ifdef PPM_READ_FILE
+
+  /*
+   * read configuration file (DEPRECATED)
+   * */
+  static void
+  read_config_file(conf * fileConf, int *numParam, char *ppm_config_file)
+  {
+    FILE *config;
+    char line[260] = "";
+    int nParam = 0;       // position of found parameter in allowedParameters
+    int sAllowedParameters = sizeof(allowedParameters)/sizeof(params);
+  
+    ppm_log(LOG_NOTICE, "ppm: Opening file %s", ppm_config_file);
+    if ((config = fopen(ppm_config_file, "r")) == NULL) {
+        ppm_log(LOG_ERR, "ppm: Opening file %s failed", ppm_config_file);
+        exit(EXIT_FAILURE);
+    }
+  
+    while (fgets(line, 256, config) != NULL) {
+        char *start = line;
+        char *word, *value;
+        char *min, *minForPoint;;
+  
+        while (isspace(*start) && isascii(*start))
+            start++;
+  
+        if (!isascii(*start))
+            continue;
+        if (start[0] == '#')
+            continue;
+  
+        if ((word = strtok(start, " \t"))) {
+            if ((value = strtok(NULL, " \t")) == NULL)
+                continue;
+            if (strchr(value, '\n') != NULL)
+                strchr(value, '\n')[0] = '\0';
+            min = strtok(NULL, " \t");
+            if (min != NULL)
+                if (strchr(min, '\n') != NULL)
+                    strchr(min, '\n')[0] = '\0';
+            minForPoint = strtok(NULL, " \t");
+            if (minForPoint != NULL)
+                if (strchr(minForPoint, '\n') != NULL)
+                    strchr(minForPoint, '\n')[0] = '\0';
+  
+  
+            nParam = typeParam(word); // search for param in allowedParameters
+            if (nParam != sAllowedParameters) // param has been found
+            {
+                ppm_log(LOG_NOTICE,
+                   "ppm: Param = %s, value = %s, min = %s, minForPoint= %s",
+                   word, value, min, minForPoint);
+  
+                storeEntry(word, value, allowedParameters[nParam].iType,
+                           min, minForPoint, fileConf, numParam);
+            }
+            else
+            {
+                ppm_log(LOG_NOTICE,
+                   "ppm: Parameter '%s' rejected", word);
+            }
+  
+        }
+    }
+  
+    fclose(config);
+  }
+
+#endif
+
+static int
+realloc_error_message(char **target, int curlen, int nextlen)
+{
+    if (curlen < nextlen + MEMORY_MARGIN) {
+        ppm_log(LOG_WARNING,
+               "ppm: Reallocating szErrStr from %d to %d", curlen,
+               nextlen + MEMORY_MARGIN);
+        ber_memfree(*target);
+        curlen = nextlen + MEMORY_MARGIN;
+        *target = (char *) ber_memalloc(curlen);
+    }
+
+    return curlen;
+}
+
+// Does the password contains a token from the RDN ?
+int
+containsRDN(char* passwd, char* DN)
+{
+    char lDN[DN_MAX_LEN];
+    char * tmpToken;
+    char * token;
+    regex_t regex;
+    int reti;
+ 
+    strcpy_safe(lDN, DN, DN_MAX_LEN);
+ 
+    // Extract the RDN from the DN
+    tmpToken = strtok(lDN, ",+");
+    tmpToken = strtok(tmpToken, "=");
+    tmpToken = strtok(NULL, "=");
+ 
+    // Search for each token in the password */
+    token = strtok(tmpToken, TOKENS_DELIMITERS);
+ 
+    while (token != NULL)
+    {
+      if (strlen(token) > 2)
+      {
+        ppm_log(LOG_NOTICE, "ppm: Checking if %s part of RDN matches the password", token);
+        // Compile regular expression
+        reti = regcomp(&regex, token, REG_ICASE);
+        if (reti) {
+          ppm_log(LOG_ERR, "ppm: Cannot compile regex: %s", token);
+          return 0;
+        }
+ 
+        // Execute regular expression
+        reti = regexec(&regex, passwd, 0, NULL, 0);
+        if (!reti)
+        {
+          regfree(&regex);
+          return 1;
+        }
+ 
+        regfree(&regex);
+      }
+      else
+      {
+        ppm_log(LOG_NOTICE, "ppm: %s part of RDN is too short to be checked", token);
+      }
+      token = strtok(NULL, TOKENS_DELIMITERS);
+    }
+ 
+    return 0;
+}
+
+
+int
+check_password(char *pPasswd, char **ppErrStr, Entry *e, void *pArg)
+{
+
+    Entry *pEntry = e;
+    struct berval *pwdCheckModuleArg = pArg;
+    char *szErrStr = (char *) ber_memalloc(MEM_INIT_SZ);
+    int mem_len = MEM_INIT_SZ;
+    int numParam = 0; // Number of params in current configuration
+
+    int useCracklib;
+    char cracklibDict[VALUE_MAX_LEN];
+    char cracklibDictFiles[3][(VALUE_MAX_LEN+5)];
+    char const* cracklibExt[] = { ".hwm", ".pwd", ".pwi" };
+    FILE* fd;
+    char* res;
+    int minQuality;
+    int checkRDN;
+    char forbiddenChars[VALUE_MAX_LEN];
+    int nForbiddenChars = 0;
+    int nQuality = 0;
+    int maxConsecutivePerClass;
+    int nbInClass[CONF_MAX_SIZE];
+    int i,j;
+
+    ppm_log(LOG_NOTICE, "ppm: entry %s", pEntry->e_nname.bv_val);
+
+#ifdef PPM_READ_FILE
+    /* Determine if config file is to be read (DEPRECATED) */
+    char ppm_config_file[FILENAME_MAX_LEN];
+
+    ppm_log(LOG_NOTICE, "ppm: Not reading pwdCheckModuleArg attribute");
+    ppm_log(LOG_NOTICE, "ppm: instead, read configuration file (deprecated)");
+
+    strcpy_safe(ppm_config_file, getenv("PPM_CONFIG_FILE"), FILENAME_MAX_LEN);
+    if (ppm_config_file[0] == '\0') {
+        strcpy_safe(ppm_config_file, CONFIG_FILE, FILENAME_MAX_LEN);
+    }
+    ppm_log(LOG_NOTICE, "ppm: reading config file from %s", ppm_config_file);
+#else
+    if ( !pwdCheckModuleArg || !pwdCheckModuleArg->bv_val ) {
+        ppm_log(LOG_ERR, "ppm: No config provided in pwdCheckModuleArg");
+        mem_len = realloc_error_message(&szErrStr, mem_len,
+                        strlen(GENERIC_ERROR));
+        sprintf(szErrStr, GENERIC_ERROR);
+        goto fail;
+    }
+
+    ppm_log(LOG_NOTICE, "ppm: Reading pwdCheckModuleArg attribute");
+    ppm_log(LOG_NOTICE, "ppm: RAW configuration: %s", pwdCheckModuleArg->bv_val);
+#endif
+
+    for (i = 0; i < CONF_MAX_SIZE; i++)
+        nbInClass[i] = 0;
+
+    /* Set default values */
+    conf fileConf[CONF_MAX_SIZE] = {
+        {"minQuality", typeInt, {.iVal = DEFAULT_QUALITY}, 0, 0
+         }
+        ,
+        {"checkRDN", typeInt, {.iVal = 0}, 0, 0
+         }
+        ,
+        {"forbiddenChars", typeStr, {.sVal = ""}, 0, 0
+         }
+        ,
+        {"maxConsecutivePerClass", typeInt, {.iVal = 0}, 0, 0
+         }
+        ,
+        {"useCracklib", typeInt, {.iVal = 0}, 0, 0
+         }
+        ,
+        {"cracklibDict", typeStr, {.sVal = "/var/cache/cracklib/cracklib_dict"}, 0, 0
+         }
+        ,
+        {"class-upperCase", typeStr, {.sVal = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"}, 0, 1
+         }
+        ,
+        {"class-lowerCase", typeStr, {.sVal = "abcdefghijklmnopqrstuvwxyz"}, 0, 1
+         }
+        ,
+        {"class-digit", typeStr, {.sVal = "0123456789"}, 0, 1
+         }
+        ,
+        {"class-special", typeStr,
+         {.sVal = "<>,?;.:/!§ù%*µ^¨$£²&é~\"#'{([-|è`_\\ç^à@)]°=}+"}, 0, 1
+         }
+    };
+    numParam = 10;
+
+    #ifdef PPM_READ_FILE
+      /* Read configuration file (DEPRECATED) */
+      read_config_file(fileConf, &numParam, ppm_config_file);
+    #else
+      /* Read configuration attribute (pwdCheckModuleArg) */
+      read_config_attr(fileConf, &numParam, (*(struct berval*)pwdCheckModuleArg).bv_val);
+    #endif
+
+    minQuality = getValue(fileConf, numParam, "minQuality")->iVal;
+    checkRDN = getValue(fileConf, numParam, "checkRDN")->iVal;
+    strcpy_safe(forbiddenChars,
+                getValue(fileConf, numParam, "forbiddenChars")->sVal,
+                VALUE_MAX_LEN);
+    maxConsecutivePerClass = getValue(fileConf, numParam, "maxConsecutivePerClass")->iVal;
+    useCracklib = getValue(fileConf, numParam, "useCracklib")->iVal;
+    strcpy_safe(cracklibDict,
+                getValue(fileConf, numParam, "cracklibDict")->sVal,
+                VALUE_MAX_LEN);
+
+
+    /*The password must have at least minQuality strength points with one
+     * point granted if the password contains at least minForPoint characters for each class
+     * It must contains at least min chars of each class
+     * It must not contain any char in forbiddenChar */
+
+    for (i = 0; i < strlen(pPasswd); i++) {
+
+        int n;
+        for (n = 0; n < numParam; n++) {
+            if (strstr(fileConf[n].param, "class-") != NULL) {
+                if (strchr(fileConf[n].value.sVal, pPasswd[i]) != NULL) {
+                    ++(nbInClass[n]);
+                }
+            }
+        }
+        if (strchr(forbiddenChars, pPasswd[i]) != NULL) {
+            nForbiddenChars++;
+        }
+    }
+
+    // Password checking done, now loocking for minForPoint criteria
+    for (i = 0; i < CONF_MAX_SIZE; i++) {
+        if (strstr(fileConf[i].param, "class-") != NULL) {
+            if ((nbInClass[i] >= fileConf[i].minForPoint)
+                && strlen(fileConf[i].value.sVal) != 0) {
+                // 1 point granted
+                ++nQuality;
+                ppm_log(LOG_NOTICE, "ppm: 1 point granted for class %s",
+                       fileConf[i].param);
+            }
+        }
+    }
+
+    if (nQuality < minQuality) {
+        mem_len = realloc_error_message(&szErrStr, mem_len,
+                                        strlen(PASSWORD_QUALITY_SZ) +
+                                        strlen(pEntry->e_nname.bv_val) + 4);
+        sprintf(szErrStr, PASSWORD_QUALITY_SZ, pEntry->e_nname.bv_val,
+                nQuality, minQuality);
+        goto fail;
+    }
+    // Password checking done, now loocking for constraintClass criteria
+    for (i = 0; i < CONF_MAX_SIZE; i++) {
+        if (strstr(fileConf[i].param, "class-") != NULL) {
+            if ((nbInClass[i] < fileConf[i].min) &&
+                 strlen(fileConf[i].value.sVal) != 0) {
+                // constraint is not satisfied... goto fail
+                mem_len = realloc_error_message(&szErrStr, mem_len,
+                                                strlen(PASSWORD_CRITERIA) +
+                                                strlen(pEntry->e_nname.bv_val) + 
+                                                2 + PARAM_MAX_LEN);
+                sprintf(szErrStr, PASSWORD_CRITERIA, pEntry->e_nname.bv_val,
+                        fileConf[i].min, fileConf[i].param);
+                goto fail;
+            }
+        }
+    }
+
+    // Password checking done, now loocking for forbiddenChars criteria
+    if (nForbiddenChars > 0) {  // at least 1 forbidden char... goto fail
+        mem_len = realloc_error_message(&szErrStr, mem_len,
+                                        strlen(PASSWORD_FORBIDDENCHARS) +
+                                        strlen(pEntry->e_nname.bv_val) + 2 +
+                                        VALUE_MAX_LEN);
+        sprintf(szErrStr, PASSWORD_FORBIDDENCHARS, pEntry->e_nname.bv_val,
+                nForbiddenChars, forbiddenChars);
+        goto fail;
+    }
+
+    // Password checking done, now loocking for maxConsecutivePerClass criteria
+    for (i = 0; i < CONF_MAX_SIZE; i++) {
+        if (strstr(fileConf[i].param, "class-") != NULL) {
+            if ( maxConsecutivePerClass != 0 &&
+                (maxConsPerClass(pPasswd,fileConf[i].value.sVal)
+                                                 > maxConsecutivePerClass)) {
+                // Too much consecutive characters of the same class
+                ppm_log(LOG_NOTICE, "ppm: Too much consecutive chars for class %s",
+                       fileConf[i].param);
+                mem_len = realloc_error_message(&szErrStr, mem_len,
+                                        strlen(PASSWORD_MAXCONSECUTIVEPERCLASS) +
+                                        strlen(pEntry->e_nname.bv_val) + 2 +
+                                        PARAM_MAX_LEN);
+                sprintf(szErrStr, PASSWORD_MAXCONSECUTIVEPERCLASS, pEntry->e_nname.bv_val,
+                        maxConsecutivePerClass, fileConf[i].param);
+                goto fail;
+            }
+        }
+    }
+#ifdef CRACKLIB
+    // Password checking done, now loocking for cracklib criteria
+    if ( useCracklib > 0 ) {
+
+        for( j = 0 ; j < 3 ; j++) {
+            strcpy_safe(cracklibDictFiles[j], cracklibDict, VALUE_MAX_LEN);
+            strcat(cracklibDictFiles[j], cracklibExt[j]);
+            if (( fd = fopen ( cracklibDictFiles[j], "r")) == NULL ) {
+                ppm_log(LOG_NOTICE, "ppm: Error while reading %s file",
+                       cracklibDictFiles[j]);
+                mem_len = realloc_error_message(&szErrStr, mem_len,
+                                strlen(GENERIC_ERROR));
+                sprintf(szErrStr, GENERIC_ERROR);
+                goto fail;
+
+            }
+            else {
+                fclose (fd);
+            }
+        }
+        res = (char *) FascistCheck (pPasswd, cracklibDict);
+        if ( res != NULL ) {
+                ppm_log(LOG_NOTICE, "ppm: cracklib does not validate password for entry %s",
+                       pEntry->e_nname.bv_val);
+                mem_len = realloc_error_message(&szErrStr, mem_len,
+                                        strlen(PASSWORD_CRACKLIB) +
+                                        strlen(pEntry->e_nname.bv_val));
+                sprintf(szErrStr, PASSWORD_CRACKLIB, pEntry->e_nname.bv_val);
+                goto fail;
+        
+        }
+
+    }
+#endif
+
+    // Password checking done, now looking for checkRDN criteria
+    if (checkRDN == 1 && containsRDN(pPasswd, pEntry->e_nname.bv_val))
+    // RDN check enabled and a token from RDN is found in password: goto fail
+    {
+        mem_len = realloc_error_message(&szErrStr, mem_len,
+                                        strlen(RDN_TOKEN_FOUND) +
+                                        strlen(pEntry->e_nname.bv_val));
+        sprintf(szErrStr, RDN_TOKEN_FOUND, pEntry->e_nname.bv_val);
+
+        goto fail;
+    }
+
+    *ppErrStr = strdup("");
+    ber_memfree(szErrStr);
+    return (LDAP_SUCCESS);
+
+  fail:
+    *ppErrStr = strdup(szErrStr);
+    ber_memfree(szErrStr);
+    return (EXIT_FAILURE);
+
+}
diff --git a/contrib/slapd-modules/ppm/ppm.example b/contrib/slapd-modules/ppm/ppm.example
new file mode 100644
index 0000000..10cf132
--- /dev/null
+++ b/contrib/slapd-modules/ppm/ppm.example
@@ -0,0 +1,85 @@
+# Example of ppm configuration
+
+# Such configuration must be stored into pwdCheckModuleArg attribute
+# of a password policy entry
+# See slapo-ppolicy for more details
+# Here is an example of such password policy:
+#   dn: cn=default,ou=policies,dc=my-domain,dc=com
+#   objectClass: pwdPolicy
+#   objectClass: top
+#   objectClass: pwdPolicyChecker
+#   objectClass: person
+#   pwdCheckQuality: 2
+#   pwdAttribute: userPassword
+#   sn: default
+#   cn: default
+#   pwdMinLength: 6
+#   pwdCheckModule: /usr/local/lib/ppm.so
+#   pwdCheckModuleArg:: bWluUXVhbGl0eSAzCmNoZWNrUkROIDAKZm9yYmlkZGVuQ2hhcnMKbWF4Q29uc2VjdXRpdmVQZXJDbGFzcyAwCnVzZUNyYWNrbGliIDAKY3JhY2tsaWJEaWN0IC92YXIvY2FjaGUvY3JhY2tsaWIvY3JhY2tsaWJfZGljdApjbGFzcy11cHBlckNhc2UgQUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVogMCAxCmNsYXNzLWxvd2VyQ2FzZSBhYmNkZWZnaGlqa2xtbm9wcXJzdHV2d3h5eiAwIDEKY2xhc3MtZGlnaXQgMDEyMzQ1Njc4OSAwIDEKY2xhc3Mtc3BlY2lhbCA8Piw/Oy46LyHCp8O5JSrCtV7CqCTCo8KyJsOpfiIjJ3soWy18w6hgX1zDp17DoEApXcKwPX0rIDAgMQ==
+#
+# Different parameters are separated by a linefeed (\n)
+# Parameters starting with a # are ignored
+# Use a base64 tool to code / decode the content of pwdCheckModuleArg
+
+
+
+# Parameters
+
+# minQuality parameter
+# Format:
+# minQuality [NUMBER]
+# Description:
+# One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.
+# defines the minimum point numbers for the password to be accepted.
+minQuality 3
+
+# checkRDN parameter
+# Format:
+# checkRDN [0 | 1]
+# Description:
+# If set to 1, password must not contain a token from the RDN.
+# Tokens are separated by these delimiters : space tabulation _ - , ; £
+checkRDN 0
+
+# forbiddenChars parameter
+# Format:
+# forbiddenChars [CHARACTERS_FORBIDDEN]
+# Description:
+# Defines the forbidden characters list (no separator).
+# If one of them is found in the password, then it is rejected.
+forbiddenChars 
+
+# maxConsecutivePerClass parameter
+# Format:
+# maxConsecutivePerClass [NUMBER]
+# Description:
+# Defines the maximum number of consecutive character allowed for any class
+maxConsecutivePerClass 0
+
+# useCracklib parameter
+# Format:
+# useCracklib [0 | 1]
+# Description:
+# If set to 1, the password must pass the cracklib check
+useCracklib 0
+
+# cracklibDict parameter
+# Format:
+# cracklibDict [path_to_cracklib_dictionary]
+# Description:
+# directory+filename-prefix that your version of CrackLib will go hunting for
+# For example, /var/pw_dict resolves as /var/pw_dict.pwd,
+# /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files
+cracklibDict /var/cache/cracklib/cracklib_dict
+
+# classes parameter
+# Format:
+# class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]
+# Description:
+# [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)
+# [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected
+# [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+class-digit 0123456789 0 1
+class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+ 0 1
diff --git a/contrib/slapd-modules/ppm/ppm.h b/contrib/slapd-modules/ppm/ppm.h
new file mode 100644
index 0000000..25b360d
--- /dev/null
+++ b/contrib/slapd-modules/ppm/ppm.h
@@ -0,0 +1,125 @@
+/*
+ * ppm.h for OpenLDAP
+ *
+ * See LICENSE, README and INSTALL files
+ */
+
+#ifndef PPM_H_
+#define PPM_H_
+
+#include <stdlib.h>             // for type conversion, such as atoi...
+#include <regex.h>              // for matching allowedParameters / conf file
+#include <string.h>
+#include <ctype.h>
+#include <portable.h>
+#include <slap.h>
+
+#if defined(DEBUG)
+#include <syslog.h>
+#endif
+
+//#define PPM_READ_FILE 1       // old deprecated configuration mode
+                                // 1: (deprecated) don't read pwdCheckModuleArg
+                                //    attribute, instead read config file
+                                // 0: read pwdCheckModuleArg attribute
+
+/* config file parameters (DEPRECATED) */
+#ifndef CONFIG_FILE
+#define CONFIG_FILE                       "/etc/openldap/ppm.example"
+#endif
+#define FILENAME_MAX_LEN                  512
+
+#define DEFAULT_QUALITY                   3
+#define MEMORY_MARGIN                     50
+#define MEM_INIT_SZ                       64
+#define DN_MAX_LEN                        512
+
+#define CONF_MAX_SIZE                      50
+#define PARAM_MAX_LEN                      32
+#define VALUE_MAX_LEN                      128
+#define ATTR_NAME_MAX_LEN                  150
+
+#define PARAM_PREFIX_CLASS                "class-"
+#define TOKENS_DELIMITERS                 " ,;-_£\t"
+
+
+#define DEBUG_MSG_MAX_LEN                 256
+
+#define PASSWORD_QUALITY_SZ \
+  "Password for dn=\"%s\" does not pass required number of strength checks (%d of %d)"
+#define PASSWORD_CRITERIA \
+  "Password for dn=\"%s\" has not reached the minimum number of characters (%d) for class %s"
+#define PASSWORD_MAXCONSECUTIVEPERCLASS \
+  "Password for dn=\"%s\" has reached the maximum number of characters (%d) for class %s"
+#define PASSWORD_FORBIDDENCHARS \
+  "Password for dn=\"%s\" contains %d forbidden characters in %s"
+#define RDN_TOKEN_FOUND \
+  "Password for dn=\"%s\" contains tokens from the RDN"
+#define GENERIC_ERROR \
+  "Error while checking password"
+#define PASSWORD_CRACKLIB \
+  "Password for dn=\"%s\" is too weak"
+#define BAD_PASSWORD_SZ \
+  "Bad password for dn=\"%s\" because %s"
+
+
+
+typedef union genValue {
+    int iVal;
+    char sVal[VALUE_MAX_LEN];
+} genValue;
+
+typedef enum {
+    typeInt,
+    typeStr
+} valueType;
+
+typedef struct params {
+    char param[PARAM_MAX_LEN];
+    valueType iType;
+} params;
+
+// allowed parameters loaded into configuration structure
+// it also contains the type of the corresponding value
+params allowedParameters[7] = {
+    {"^minQuality", typeInt},
+    {"^checkRDN", typeInt},
+    {"^forbiddenChars", typeStr},
+    {"^maxConsecutivePerClass", typeInt},
+    {"^useCracklib", typeInt},
+    {"^cracklibDict", typeStr},
+    {"^class-.*", typeStr}
+};
+
+
+// configuration structure, containing a parameter, a value,
+// a corresponding min and minForPoint indicators if necessary
+// and a type for the value (typeInt or typeStr)
+typedef struct conf {
+    char param[PARAM_MAX_LEN];
+    valueType iType;
+    genValue value;
+    int min;
+    int minForPoint;
+} conf;
+
+void ppm_log(int priority, const char *format, ...);
+int min(char *str1, char *str2);
+#ifndef PPM_READ_FILE
+  static void read_config_attr(conf * fileConf, int *numParam, char *ppm_config_attr);
+#endif
+#ifdef PPM_READ_FILE
+  static void read_config_file(conf * fileConf, int *numParam, char *ppm_config_file);
+#endif
+int check_password(char *pPasswd, char **ppErrStr, Entry *e, void *pArg);
+int maxConsPerClass(char *password, char *charClass);
+void storeEntry(char *param, char *value, valueType valType, 
+           char *min, char *minForPoint, conf * fileConf, int *numParam);
+int typeParam(char* param);
+genValue* getValue(conf *fileConf, int numParam, char* param);
+void strcpy_safe(char *dest, char *src, int length_dest);
+
+
+int ppm_test = 0;
+
+#endif
diff --git a/contrib/slapd-modules/ppm/ppm.md b/contrib/slapd-modules/ppm/ppm.md
new file mode 100644
index 0000000..5b1accb
--- /dev/null
+++ b/contrib/slapd-modules/ppm/ppm.md
@@ -0,0 +1,343 @@
+---
+title: ppm
+section: 5
+header: File Formats Manual
+footer: ppm
+date: August 24, 2021
+---
+
+# NAME
+
+ppm (Password Policy Module) - extension of the password policy overlay
+
+# SYNOPSIS
+
+ETCDIR/ppm.example
+
+# DESCRIPTION
+
+**ppm** is an OpenLDAP module for checking password quality when they are modified.
+Passwords are checked against the presence or absence of certain character classes.
+
+This module is used as an extension of the OpenLDAP password policy controls,
+see slapo-ppolicy(5) section **pwdCheckModule**.
+
+
+# USAGE
+
+Create a password policy entry and indicate the path of the ppm.so library
+and the content of the desired policy.
+Use a base64 tool to code / decode the content of the policy stored into
+**pwdCheckModuleArg**. Here is an example:
+
+```
+dn: cn=default,ou=policies,dc=my-domain,dc=com
+objectClass: pwdPolicy
+objectClass: top
+objectClass: pwdPolicyChecker
+objectClass: person
+pwdCheckQuality: 2
+pwdAttribute: userPassword
+sn: default
+cn: default
+pwdMinLength: 6
+pwdCheckModule: /usr/local/lib/ppm.so
+pwdCheckModuleArg:: bWluUXVhbGl0eSAzCmNoZWNrUkROIDAKZm9yYmlkZGVuQ2hhcnMKbWF4Q29uc2VjdXRpdmVQZXJDbGFzcyAwCnVzZUNyYWNrbGliIDAKY3JhY2tsaWJEaWN0IC92YXIvY2FjaGUvY3JhY2tsaWIvY3JhY2tsaWJfZGljdApjbGFzcy11cHBlckNhc2UgQUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVogMCAxCmNsYXNzLWxvd2VyQ2FzZSBhYmNkZWZnaGlqa2xtbm9wcXJzdHV2d3h5eiAwIDEKY2xhc3MtZGlnaXQgMDEyMzQ1Njc4OSAwIDEKY2xhc3Mtc3BlY2lhbCA8Piw/Oy46LyHCp8O5JSrCtV7CqCTCo8KyJsOpfiIjJ3soWy18w6hgX1zDp17DoEApXcKwPX0rIDAgMQ==
+```
+
+
+See **slapo-ppolicy** for more information, but to sum up:
+
+- enable ppolicy overlay in your database.
+- define a default password policy in OpenLDAP configuration or use pwdPolicySubentry attribute to point to the given policy.
+
+This example show the activation for a **slapd.conf** file
+(see **slapd-config** and **slapo-ppolicy** for more information for
+ **cn=config** configuration)
+
+```
+overlay ppolicy
+ppolicy_default "cn=default,ou=policies,dc=my-domain,dc=com"
+#ppolicy_use_lockout   # for having more infos about the lockout
+```
+
+
+# FEATURES
+
+Here are the main features:
+
+- 4 character classes are defined by default:
+upper case, lower case, digits and special characters.
+
+- more character classes can be defined, just write your own.
+
+- passwords must match the amount of quality points.
+A point is validated when at least m characters of the corresponding
+character class are present in the password.
+
+- passwords must have at least n of the corresponding character class
+present, else they are rejected.
+
+- the two previous criteria are checked against any specific character class
+defined.
+
+- if a password contains any of the forbidden characters, then it is
+rejected.
+
+- if a password contains tokens from the RDN, then it is rejected.
+
+- if a password does not pass cracklib check, then it is rejected.
+
+
+# CONFIGURATION
+
+Since OpenLDAP 2.5 version, ppm configuration is held in a binary
+attribute of the password policy: **pwdCheckModuleArg**
+
+The example file (**ETCDIR/ppm.example** by default) is to be
+considered as an example configuration, to import in the **pwdCheckModuleArg**
+attribute. It is also used for testing passwords with the test program
+provided.
+
+If for some reasons, any parameter is not found, it will be given its
+default value.
+
+Note: you can still compile ppm to use the configuration file, by enabling
+**PPM_READ_FILE** in **ppm.h** (but this is deprecated now). If you decide to do so,
+you can use the **PPM_CONFIG_FILE** environment variable for overloading the
+configuration file path.
+
+The syntax of a configuration line is:
+
+```
+parameter value [min] [minForPoint]
+```
+
+with spaces being delimiters and Line Feed (LF) ending the line.
+
+Parameter names **are** case sensitive.
+
+Lines beginning by a **#** are considered as comments.
+
+The default configuration is the following:
+
+```
+# minQuality parameter
+# Format:
+# minQuality [NUMBER]
+# Description:
+# One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.
+# defines the minimum point numbers for the password to be accepted.
+minQuality 3
+
+# checkRDN parameter
+# Format:
+# checkRDN [0 | 1]
+# Description:
+# If set to 1, password must not contain a token from the RDN.
+# Tokens are separated by the following delimiters : space tabulation _ - , ; £
+checkRDN 0
+
+# forbiddenChars parameter
+# Format:
+# forbiddenChars [CHARACTERS_FORBIDDEN]
+# Description:
+# Defines the forbidden characters list (no separator).
+# If one of them is found in the password, then it is rejected.
+forbiddenChars
+
+# maxConsecutivePerClass parameter
+# Format:
+# maxConsecutivePerClass [NUMBER]
+# Description:
+# Defines the maximum number of consecutive character allowed for any class
+maxConsecutivePerClass 0
+
+# useCracklib parameter
+# Format:
+# useCracklib [0 | 1]
+# Description:
+# If set to 1, the password must pass the cracklib check
+useCracklib 0
+
+# cracklibDict parameter
+# Format:
+# cracklibDict [path_to_cracklib_dictionary]
+# Description:
+# directory+filename-prefix that your version of CrackLib will go hunting for
+# For example, /var/pw_dict resolves as /var/pw_dict.pwd,
+# /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files
+cracklibDict /var/cache/cracklib/cracklib_dict
+
+# classes parameter
+# Format:
+# class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]
+# Description:
+# [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)
+# [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected
+# [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+class-digit 0123456789 0 1
+class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+ 0 1
+```
+
+# EXAMPLE
+
+With this policy:
+```
+minQuality 4
+forbiddenChars .?,
+checkRDN 1
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 5
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 12
+class-digit 0123456789 0 1
+class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+ 0 1
+class-myClass :) 1 1``
+```
+
+the password **ThereIsNoCowLevel)** is working, because:
+
+- it has 4 character classes validated : upper, lower, special, and myClass
+- it has no character among .?,
+- it has at least one character among : or )
+
+but it won't work for the user uid=John Cowlevel,ou=people,cn=example,cn=com,
+because the token "Cowlevel" from his RDN exists in the password (case insensitive).
+
+
+# LOGS
+
+If a user password is rejected by **ppm**, the user will get this type of message:
+
+Typical user message from ldappasswd(5):
+
+```
+  Result: Constraint violation (19)
+  Additional info: Password for dn=\"%s\" does not pass required number of strength checks (2 of 3)
+```
+
+A more detailed message is written to the server log.
+
+Server log:
+
+```
+Feb 26 14:46:10 debian-11-64 slapd[1981]: conn=1000 op=16 MOD dn="uid=user,ou=persons,dc=my-domain,dc=com"
+Feb 26 14:46:10 debian-11-64 slapd[1981]: conn=1000 op=16 MOD attr=userPassword
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: entry uid=user,ou=persons,dc=my-domain,dc=com
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Reading pwdCheckModuleArg attribute
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: RAW configuration: # minQuality parameter#012# Format:#012# minQuality [NUMBER]#012# Description:#012# One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.#012# defines the minimum point numbers for the password to be accepted.#012minQuality 3#012#012# checkRDN parameter#012# Format:#012# checkRDN [0 | 1]#012# Description:#012# If set to 1, password must not contain a token from the RDN.#012# Tokens are separated by the following delimiters : space tabulation _ - , ; £#012checkRDN 0#012#012# forbiddenChars parameter#012# Format:#012# forbiddenChars [CHARACTERS_FORBIDDEN]#012# Description:#012# Defines the forbidden characters list (no separator).#012# If one of them is found in the password, then it is rejected.#012forbiddenChars#012#012# maxConsecutivePerClass parameter#012# Format:#012# maxConsecutivePerClass [NUMBER]#012# Description:#012# Defines the maximum number of consecutive character allowed for any class#012maxConsecutivePerClass 0#012#012# useCracklib parameter#012# Format:#012# useCracklib [0 | 1]#012# Description:#012# If set to 1, the password must pass the cracklib check#012useCracklib 0#012#012# cracklibDict parameter#012# Format:#012# cracklibDict [path_to_cracklib_dictionary]#012# Description:#012# directory+filename-prefix that your version of CrackLib will go hunting for#012# For example, /var/pw_dict resolves as /var/pw_dict.pwd,#012# /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files#012cracklibDict /var/cache/cracklib/cracklib_dict#012#012# classes parameter#012# Format:#012# class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]#012# Description:#012# [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)#012# [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected#012# [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class#012class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1#012class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1#012class-digit 0123456789 0 1#012class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+ 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Parsing pwdCheckModuleArg attribute
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # minQuality parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # minQuality [NUMBER]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # defines the minimum point numbers for the password to be accepted.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: minQuality 3
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = minQuality, value = 3, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 3
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # checkRDN parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # checkRDN [0 | 1]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # If set to 1, password must not contain a token from the RDN.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Tokens are separated by the following delimiters : space tabulation _ - , ; £
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: checkRDN 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = checkRDN, value = 0, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # forbiddenChars parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # forbiddenChars [CHARACTERS_FORBIDDEN]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Defines the forbidden characters list (no separator).
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # If one of them is found in the password, then it is rejected.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: forbiddenChars
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: No value, goto next parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # maxConsecutivePerClass parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # maxConsecutivePerClass [NUMBER]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Defines the maximum number of consecutive character allowed for any class
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: maxConsecutivePerClass 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = maxConsecutivePerClass, value = 0, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # useCracklib parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # useCracklib [0 | 1]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # If set to 1, the password must pass the cracklib check
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: useCracklib 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = useCracklib, value = 0, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # cracklibDict parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # cracklibDict [path_to_cracklib_dictionary]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # directory+filename-prefix that your version of CrackLib will go hunting for
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # For example, /var/pw_dict resolves as /var/pw_dict.pwd,
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: cracklibDict /var/cache/cracklib/cracklib_dict
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = cracklibDict, value = /var/cache/cracklib/cracklib_dict, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: /var/cache/cracklib/cracklib_dict
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # classes parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-upperCase, value = ABCDEFGHIJKLMNOPQRSTUVWXYZ, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: ABCDEFGHIJKLMNOPQRSTUVWXYZ
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-lowerCase, value = abcdefghijklmnopqrstuvwxyz, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: abcdefghijklmnopqrstuvwxyz
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-digit 0123456789 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-digit, value = 0123456789, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0123456789
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+ 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-special, value = <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: <>,?;.:/!§ù%*µ^¨$£²&é~"#'{([-|è`_\ç^à@)]°=}+
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: 1 point granted for class class-lowerCase
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: 1 point granted for class class-digit
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Reallocating szErrStr from 64 to 173
+Feb 26 14:46:10 debian-11-64 slapd[1981]: check_password_quality: module error: (/usr/local/lib/ppm.so) Password for dn="uid=user,ou=persons,dc=my-domain,dc=com" does not pass required number of strength checks (2 of 3).[1]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: conn=1000 op=16 RESULT tag=103 err=19 qtime=0.000020 etime=0.001496 text=Password for dn="uid=user,ou=persons,dc=my-domain,dc=com" does not pass required number of strength checks (2 of 3)
+```
+
+
+# TESTS
+
+There is a unit test script: **unit_tests.sh** that illustrates checking some passwords.
+
+It is possible to test one particular password using directly the test program:
+
+```
+cd /usr/local/lib
+LD_LIBRARY_PATH=. ./ppm_test "uid=test,ou=users,dc=my-domain,dc=com" "my_password" "/usr/local/etc/openldap/ppm.example" && echo OK
+```
+
+
+# FILES
+
+**ETCDIR/ppm.example**
+
+> example of ppm configuration to be inserted in **pwdCheckModuleArg** attribute of given password policy
+
+**ppm.so**
+
+> ppm library, loaded by the **pwdCheckModule** attribute of given password policy
+
+**ppm_test**
+
+> small test program for checking password in a command-line
+
+
+# SEE ALSO
+
+**slapo-ppolicy**(5), **slapd-config**(5), **slapd.conf**(5)
+
+# ACKNOWLEDGEMENTS
+
+This module was developed in 2014-2021 by David Coutadeur.
diff --git a/contrib/slapd-modules/ppm/ppm_test.c b/contrib/slapd-modules/ppm/ppm_test.c
new file mode 100644
index 0000000..520aa0a
--- /dev/null
+++ b/contrib/slapd-modules/ppm/ppm_test.c
@@ -0,0 +1,66 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "ppm.h"
+
+int main(int argc, char *argv[])
+{
+  /*
+   * argv[1]: user
+   * argv[2]: password
+   * argv[3]: configuration file
+   */
+
+  int ret = 1;
+
+  if(argc > 2)
+  {
+    printf("Testing user %s password: '%s' against %s policy config file \n",
+            argv[1], argv[2], argv[3]
+          );
+
+    /* format user entry */
+    char *errmsg = NULL;
+    Entry pEntry;
+    pEntry.e_nname.bv_val=argv[1];
+    pEntry.e_name.bv_val=argv[1];
+
+    /* get configuration file content */
+    struct berval pArg;
+    FILE *fp;
+    if ((fp = fopen(argv[3],"r")) == NULL)
+    {
+      fprintf(stderr,"Unable to open config file for reading\n");
+      return ret;
+    }
+    char *fcontent = NULL;
+    fseek(fp, 0, SEEK_END);
+    long fsize = ftell(fp);
+    fseek(fp, 0, SEEK_SET);
+    fcontent = malloc(fsize);
+    fread(fcontent, 1, fsize, fp);
+    fclose(fp);
+    pArg.bv_val = fcontent;
+  
+    ppm_test=1; // enable ppm_test for informing ppm not to use syslog
+
+    ret = check_password(argv[2], &errmsg, &pEntry, &pArg);
+
+    if(ret == 0)
+    {
+      printf("Password is OK!\n");
+    }
+    else
+    {
+      printf("Password failed checks : %s\n", errmsg);
+    }
+
+    ber_memfree(errmsg);
+    return ret;
+
+  }
+
+  return ret;
+}
+
+
+
diff --git a/contrib/slapd-modules/ppm/slapm-ppm.5 b/contrib/slapd-modules/ppm/slapm-ppm.5
new file mode 100644
index 0000000..10e9c8d
--- /dev/null
+++ b/contrib/slapd-modules/ppm/slapm-ppm.5
@@ -0,0 +1,360 @@
+.\" Automatically generated by Pandoc 2.9.2.1
+.\"
+.TH "ppm" "5" "August 24, 2021" "ppm" "File Formats Manual"
+.hy
+.SH NAME
+.PP
+ppm (Password Policy Module) - extension of the password policy overlay
+.SH SYNOPSIS
+.PP
+ETCDIR/ppm.example
+.SH DESCRIPTION
+.PP
+\f[B]ppm\f[R] is an OpenLDAP module for checking password quality when
+they are modified.
+Passwords are checked against the presence or absence of certain
+character classes.
+.PP
+This module is used as an extension of the OpenLDAP password policy
+controls, see slapo-ppolicy(5) section \f[B]pwdCheckModule\f[R].
+.SH USAGE
+.PP
+Create a password policy entry and indicate the path of the ppm.so
+library and the content of the desired policy.
+Use a base64 tool to code / decode the content of the policy stored into
+\f[B]pwdCheckModuleArg\f[R].
+Here is an example:
+.IP
+.nf
+\f[C]
+dn: cn=default,ou=policies,dc=my-domain,dc=com
+objectClass: pwdPolicy
+objectClass: top
+objectClass: pwdPolicyChecker
+objectClass: person
+pwdCheckQuality: 2
+pwdAttribute: userPassword
+sn: default
+cn: default
+pwdMinLength: 6
+pwdCheckModule: /usr/local/lib/ppm.so
+pwdCheckModuleArg:: bWluUXVhbGl0eSAzCmNoZWNrUkROIDAKZm9yYmlkZGVuQ2hhcnMKbWF4Q29uc2VjdXRpdmVQZXJDbGFzcyAwCnVzZUNyYWNrbGliIDAKY3JhY2tsaWJEaWN0IC92YXIvY2FjaGUvY3JhY2tsaWIvY3JhY2tsaWJfZGljdApjbGFzcy11cHBlckNhc2UgQUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVogMCAxCmNsYXNzLWxvd2VyQ2FzZSBhYmNkZWZnaGlqa2xtbm9wcXJzdHV2d3h5eiAwIDEKY2xhc3MtZGlnaXQgMDEyMzQ1Njc4OSAwIDEKY2xhc3Mtc3BlY2lhbCA8Piw/Oy46LyHCp8O5JSrCtV7CqCTCo8KyJsOpfiIjJ3soWy18w6hgX1zDp17DoEApXcKwPX0rIDAgMQ==
+\f[R]
+.fi
+.PP
+See \f[B]slapo-ppolicy\f[R] for more information, but to sum up:
+.IP \[bu] 2
+enable ppolicy overlay in your database.
+.IP \[bu] 2
+define a default password policy in OpenLDAP configuration or use
+pwdPolicySubentry attribute to point to the given policy.
+.PP
+This example show the activation for a \f[B]slapd.conf\f[R] file (see
+\f[B]slapd-config\f[R] and \f[B]slapo-ppolicy\f[R] for more information
+for \f[B]cn=config\f[R] configuration)
+.IP
+.nf
+\f[C]
+overlay ppolicy
+ppolicy_default \[dq]cn=default,ou=policies,dc=my-domain,dc=com\[dq]
+#ppolicy_use_lockout   # for having more infos about the lockout
+\f[R]
+.fi
+.SH FEATURES
+.PP
+Here are the main features:
+.IP \[bu] 2
+4 character classes are defined by default: upper case, lower case,
+digits and special characters.
+.IP \[bu] 2
+more character classes can be defined, just write your own.
+.IP \[bu] 2
+passwords must match the amount of quality points.
+A point is validated when at least m characters of the corresponding
+character class are present in the password.
+.IP \[bu] 2
+passwords must have at least n of the corresponding character class
+present, else they are rejected.
+.IP \[bu] 2
+the two previous criteria are checked against any specific character
+class defined.
+.IP \[bu] 2
+if a password contains any of the forbidden characters, then it is
+rejected.
+.IP \[bu] 2
+if a password contains tokens from the RDN, then it is rejected.
+.IP \[bu] 2
+if a password does not pass cracklib check, then it is rejected.
+.SH CONFIGURATION
+.PP
+Since OpenLDAP 2.5 version, ppm configuration is held in a binary
+attribute of the password policy: \f[B]pwdCheckModuleArg\f[R]
+.PP
+The example file (\f[B]ETCDIR/ppm.example\f[R] by default) is to be
+considered as an example configuration, to import in the
+\f[B]pwdCheckModuleArg\f[R] attribute.
+It is also used for testing passwords with the test program provided.
+.PP
+If for some reasons, any parameter is not found, it will be given its
+default value.
+.PP
+Note: you can still compile ppm to use the configuration file, by
+enabling \f[B]PPM_READ_FILE\f[R] in \f[B]ppm.h\f[R] (but this is
+deprecated now).
+If you decide to do so, you can use the \f[B]PPM_CONFIG_FILE\f[R]
+environment variable for overloading the configuration file path.
+.PP
+The syntax of a configuration line is:
+.IP
+.nf
+\f[C]
+parameter value [min] [minForPoint]
+\f[R]
+.fi
+.PP
+with spaces being delimiters and Line Feed (LF) ending the line.
+.PP
+Parameter names \f[B]are\f[R] case sensitive.
+.PP
+Lines beginning by a \f[B]#\f[R] are considered as comments.
+.PP
+The default configuration is the following:
+.IP
+.nf
+\f[C]
+# minQuality parameter
+# Format:
+# minQuality [NUMBER]
+# Description:
+# One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.
+# defines the minimum point numbers for the password to be accepted.
+minQuality 3
+
+# checkRDN parameter
+# Format:
+# checkRDN [0 | 1]
+# Description:
+# If set to 1, password must not contain a token from the RDN.
+# Tokens are separated by the following delimiters : space tabulation _ - , ; \[Po]
+checkRDN 0
+
+# forbiddenChars parameter
+# Format:
+# forbiddenChars [CHARACTERS_FORBIDDEN]
+# Description:
+# Defines the forbidden characters list (no separator).
+# If one of them is found in the password, then it is rejected.
+forbiddenChars
+
+# maxConsecutivePerClass parameter
+# Format:
+# maxConsecutivePerClass [NUMBER]
+# Description:
+# Defines the maximum number of consecutive character allowed for any class
+maxConsecutivePerClass 0
+
+# useCracklib parameter
+# Format:
+# useCracklib [0 | 1]
+# Description:
+# If set to 1, the password must pass the cracklib check
+useCracklib 0
+
+# cracklibDict parameter
+# Format:
+# cracklibDict [path_to_cracklib_dictionary]
+# Description:
+# directory+filename-prefix that your version of CrackLib will go hunting for
+# For example, /var/pw_dict resolves as /var/pw_dict.pwd,
+# /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files
+cracklibDict /var/cache/cracklib/cracklib_dict
+
+# classes parameter
+# Format:
+# class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]
+# Description:
+# [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)
+# [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected
+# [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+class-digit 0123456789 0 1
+class-special <>,?;.:/!\[sc]\[`u]%*\[mc]\[ha]\[ad]$\[Po]\[S2]&\['e]\[ti]\[dq]#\[aq]{([-|\[`e]\[ga]_\[rs]\[,c]\[ha]\[`a]\[at])]\[de]=}+ 0 1
+\f[R]
+.fi
+.SH EXAMPLE
+.PP
+With this policy:
+.IP
+.nf
+\f[C]
+minQuality 4
+forbiddenChars .?,
+checkRDN 1
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 5
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 12
+class-digit 0123456789 0 1
+class-special <>,?;.:/!\[sc]\[`u]%*\[mc]\[ha]\[ad]$\[Po]\[S2]&\['e]\[ti]\[dq]#\[aq]{([-|\[`e]\[ga]_\[rs]\[,c]\[ha]\[`a]\[at])]\[de]=}+ 0 1
+class-myClass :) 1 1\[ga]\[ga]
+\f[R]
+.fi
+.PP
+the password \f[B]ThereIsNoCowLevel)\f[R] is working, because:
+.IP \[bu] 2
+it has 4 character classes validated : upper, lower, special, and
+myClass
+.IP \[bu] 2
+it has no character among .?,
+.IP \[bu] 2
+it has at least one character among : or )
+.PP
+but it won\[cq]t work for the user uid=John
+Cowlevel,ou=people,cn=example,cn=com, because the token
+\[lq]Cowlevel\[rq] from his RDN exists in the password (case
+insensitive).
+.SH LOGS
+.PP
+If a user password is rejected by \f[B]ppm\f[R], the user will get this
+type of message:
+.PP
+Typical user message from ldappasswd(5):
+.IP
+.nf
+\f[C]
+  Result: Constraint violation (19)
+  Additional info: Password for dn=\[rs]\[dq]%s\[rs]\[dq] does not pass required number of strength checks (2 of 3)
+\f[R]
+.fi
+.PP
+A more detailed message is written to the server log.
+.PP
+Server log:
+.IP
+.nf
+\f[C]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: conn=1000 op=16 MOD dn=\[dq]uid=user,ou=persons,dc=my-domain,dc=com\[dq]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: conn=1000 op=16 MOD attr=userPassword
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: entry uid=user,ou=persons,dc=my-domain,dc=com
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Reading pwdCheckModuleArg attribute
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: RAW configuration: # minQuality parameter#012# Format:#012# minQuality [NUMBER]#012# Description:#012# One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.#012# defines the minimum point numbers for the password to be accepted.#012minQuality 3#012#012# checkRDN parameter#012# Format:#012# checkRDN [0 | 1]#012# Description:#012# If set to 1, password must not contain a token from the RDN.#012# Tokens are separated by the following delimiters : space tabulation _ - , ; \[Po]#012checkRDN 0#012#012# forbiddenChars parameter#012# Format:#012# forbiddenChars [CHARACTERS_FORBIDDEN]#012# Description:#012# Defines the forbidden characters list (no separator).#012# If one of them is found in the password, then it is rejected.#012forbiddenChars#012#012# maxConsecutivePerClass parameter#012# Format:#012# maxConsecutivePerClass [NUMBER]#012# Description:#012# Defines the maximum number of consecutive character allowed for any class#012maxConsecutivePerClass 0#012#012# useCracklib parameter#012# Format:#012# useCracklib [0 | 1]#012# Description:#012# If set to 1, the password must pass the cracklib check#012useCracklib 0#012#012# cracklibDict parameter#012# Format:#012# cracklibDict [path_to_cracklib_dictionary]#012# Description:#012# directory+filename-prefix that your version of CrackLib will go hunting for#012# For example, /var/pw_dict resolves as /var/pw_dict.pwd,#012# /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files#012cracklibDict /var/cache/cracklib/cracklib_dict#012#012# classes parameter#012# Format:#012# class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]#012# Description:#012# [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)#012# [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected#012# [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class#012class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1#012class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1#012class-digit 0123456789 0 1#012class-special <>,?;.:/!\[sc]\[`u]%*\[mc]\[ha]\[ad]$\[Po]\[S2]&\['e]\[ti]\[dq]#\[aq]{([-|\[`e]\[ga]_\[rs]\[,c]\[ha]\[`a]\[at])]\[de]=}+ 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Parsing pwdCheckModuleArg attribute
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # minQuality parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # minQuality [NUMBER]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # One point is granted for each class for which MIN_FOR_POINT criteria is fulfilled.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # defines the minimum point numbers for the password to be accepted.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: minQuality 3
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = minQuality, value = 3, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 3
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # checkRDN parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # checkRDN [0 | 1]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # If set to 1, password must not contain a token from the RDN.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Tokens are separated by the following delimiters : space tabulation _ - , ; \[Po]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: checkRDN 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = checkRDN, value = 0, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # forbiddenChars parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # forbiddenChars [CHARACTERS_FORBIDDEN]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Defines the forbidden characters list (no separator).
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # If one of them is found in the password, then it is rejected.
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: forbiddenChars
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: No value, goto next parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # maxConsecutivePerClass parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # maxConsecutivePerClass [NUMBER]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Defines the maximum number of consecutive character allowed for any class
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: maxConsecutivePerClass 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = maxConsecutivePerClass, value = 0, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # useCracklib parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # useCracklib [0 | 1]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # If set to 1, the password must pass the cracklib check
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: useCracklib 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = useCracklib, value = 0, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # cracklibDict parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # cracklibDict [path_to_cracklib_dictionary]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # directory+filename-prefix that your version of CrackLib will go hunting for
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # For example, /var/pw_dict resolves as /var/pw_dict.pwd,
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # /var/pw_dict.pwi and /var/pw_dict.hwm dictionary files
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: cracklibDict /var/cache/cracklib/cracklib_dict
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = cracklibDict, value = /var/cache/cracklib/cracklib_dict, min = (null), minForPoint= (null)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: /var/cache/cracklib/cracklib_dict
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # classes parameter
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Format:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # class-[CLASS_NAME] [CHARACTERS_DEFINING_CLASS] [MIN] [MIN_FOR_POINT]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # Description:
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # [CHARACTERS_DEFINING_CLASS]: characters defining the class (no separator)
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # [MIN]: If at least [MIN] characters of this class is not found in the password, then it is rejected
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: # [MIN_FOR_POINT]: one point is granted if password contains at least [MIN_FOR_POINT] character numbers of this class
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-upperCase, value = ABCDEFGHIJKLMNOPQRSTUVWXYZ, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: ABCDEFGHIJKLMNOPQRSTUVWXYZ
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-lowerCase, value = abcdefghijklmnopqrstuvwxyz, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: abcdefghijklmnopqrstuvwxyz
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-digit 0123456789 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-digit, value = 0123456789, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: 0123456789
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: get line: class-special <>,?;.:/!\[sc]\[`u]%*\[mc]\[ha]\[ad]$\[Po]\[S2]&\['e]\[ti]\[dq]#\[aq]{([-|\[`e]\[ga]_\[rs]\[,c]\[ha]\[`a]\[at])]\[de]=}+ 0 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Param = class-special, value = <>,?;.:/!\[sc]\[`u]%*\[mc]\[ha]\[ad]$\[Po]\[S2]&\['e]\[ti]\[dq]#\[aq]{([-|\[`e]\[ga]_\[rs]\[,c]\[ha]\[`a]\[at])]\[de]=}+, min = 0, minForPoint= 1
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm:  Accepted replaced value: <>,?;.:/!\[sc]\[`u]%*\[mc]\[ha]\[ad]$\[Po]\[S2]&\['e]\[ti]\[dq]#\[aq]{([-|\[`e]\[ga]_\[rs]\[,c]\[ha]\[`a]\[at])]\[de]=}+
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: 1 point granted for class class-lowerCase
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: 1 point granted for class class-digit
+Feb 26 14:46:10 debian-11-64 slapd[1981]: ppm: Reallocating szErrStr from 64 to 173
+Feb 26 14:46:10 debian-11-64 slapd[1981]: check_password_quality: module error: (/usr/local/lib/ppm.so) Password for dn=\[dq]uid=user,ou=persons,dc=my-domain,dc=com\[dq] does not pass required number of strength checks (2 of 3).[1]
+Feb 26 14:46:10 debian-11-64 slapd[1981]: conn=1000 op=16 RESULT tag=103 err=19 qtime=0.000020 etime=0.001496 text=Password for dn=\[dq]uid=user,ou=persons,dc=my-domain,dc=com\[dq] does not pass required number of strength checks (2 of 3)
+\f[R]
+.fi
+.SH TESTS
+.PP
+There is a unit test script: \f[B]unit_tests.sh\f[R] that illustrates
+checking some passwords.
+.PP
+It is possible to test one particular password using directly the test
+program:
+.IP
+.nf
+\f[C]
+cd /usr/local/lib
+LD_LIBRARY_PATH=. ./ppm_test \[dq]uid=test,ou=users,dc=my-domain,dc=com\[dq] \[dq]my_password\[dq] \[dq]/usr/local/etc/openldap/ppm.example\[dq] && echo OK
+\f[R]
+.fi
+.SH FILES
+.PP
+\f[B]ETCDIR/ppm.example\f[R]
+.RS
+.PP
+example of ppm configuration to be inserted in
+\f[B]pwdCheckModuleArg\f[R] attribute of given password policy
+.RE
+.PP
+\f[B]ppm.so\f[R]
+.RS
+.PP
+ppm library, loaded by the \f[B]pwdCheckModule\f[R] attribute of given
+password policy
+.RE
+.PP
+\f[B]ppm_test\f[R]
+.RS
+.PP
+small test program for checking password in a command-line
+.RE
+.SH SEE ALSO
+.PP
+\f[B]slapo-ppolicy\f[R](5), \f[B]slapd-config\f[R](5),
+\f[B]slapd.conf\f[R](5)
+.SH ACKNOWLEDGEMENTS
+.PP
+This module was developed in 2014-2021 by David Coutadeur.
diff --git a/contrib/slapd-modules/ppm/unit_tests.sh b/contrib/slapd-modules/ppm/unit_tests.sh
new file mode 100755
index 0000000..c152c96
--- /dev/null
+++ b/contrib/slapd-modules/ppm/unit_tests.sh
@@ -0,0 +1,118 @@
+#!/bin/bash
+
+# Launch unitary tests
+# 
+
+
+CONFIG_FILE="ppm.example"
+
+LDAP_SRC="${LDAP_SRC:-../../..}"
+LDAP_BUILD=${LDAP_BUILD:-${LDAP_SRC}}
+CURRENT_DIR=$( dirname $0 )
+LIB_PATH="${LD_LIBRARY_PATH}:${CURRENT_DIR}:${LDAP_BUILD}/libraries/liblber/.libs:${LDAP_BUILD}/libraries/libldap/.libs"
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+NC='\033[0m'
+
+RESULT=0
+
+PPM_CONF_1='minQuality 3
+checkRDN 0
+forbiddenChars 
+maxConsecutivePerClass 0
+useCracklib 0
+cracklibDict /var/cache/cracklib/cracklib_dict
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+class-digit 0123456789 0 1
+class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'\''{([-|è`_\ç^à@)]°=}+ 0 1'
+
+PPM_CONF_2='minQuality 3
+checkRDN 0
+forbiddenChars à
+maxConsecutivePerClass 5
+useCracklib 0
+cracklibDict /var/cache/cracklib/cracklib_dict
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 2 4
+class-lowerCase abcdefghijklmnopqrstuvwxyz 3 4
+class-digit 0123456789 2 4
+class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'\''{([-|è`_\ç^à@)]°=}+ 0 4'
+
+PPM_CONF_3='minQuality 3
+checkRDN 1
+forbiddenChars 
+maxConsecutivePerClass 0
+useCracklib 0
+cracklibDict /var/cache/cracklib/cracklib_dict
+class-upperCase ABCDEFGHIJKLMNOPQRSTUVWXYZ 0 1
+class-lowerCase abcdefghijklmnopqrstuvwxyz 0 1
+class-digit 0123456789 0 1
+class-special <>,?;.:/!§ù%*µ^¨$£²&é~"#'\''{([-|è`_\ç^à@)]°=}+ 0 1'
+
+
+echo "$PPM_CONF_1" > ppm1.conf
+echo "$PPM_CONF_2" > ppm2.conf
+echo "$PPM_CONF_3" > ppm3.conf
+
+
+launch_test()
+{
+  # launch tests
+  # FORMAT: launch_test [conf_file] [password] [expected_result]
+  # [expected_result] = [PASS|FAIL]
+
+  local CONF="$1"
+  local USER="$2"
+  local PASS="$3"
+  local EXPECT="$4"
+
+  [[ $EXPECT == "PASS" ]] && EXP="0" || EXP="1"
+
+  LD_LIBRARY_PATH="${LIB_PATH}" ./ppm_test "${USER}" "${PASS}" "${CONF}"
+  RES="$?"
+
+  if [ "$RES" -eq "$EXP" ] ; then
+    echo -e "conf=${CONF} user=${USER} pass=${PASS} expect=${EXPECT}... ${GREEN}PASS${NC}"
+  else
+    echo -e "conf=${CONF} user=${USER} pass=${PASS} expect=${EXPECT}... ${RED}FAIL${NC}"
+    ((RESULT+=1))
+  fi
+
+  echo
+}
+
+
+
+
+launch_test "ppm1.conf" "uid=test,ou=users,dc=my-domain,dc=com" "azerty" "FAIL"
+launch_test "ppm1.conf" "uid=test,ou=users,dc=my-domain,dc=com" "azeRTY" "FAIL"
+launch_test "ppm1.conf" "uid=test,ou=users,dc=my-domain,dc=com" "azeRTY123" "PASS"
+launch_test "ppm1.conf" "uid=test,ou=users,dc=my-domain,dc=com" "azeRTY." "PASS"
+
+
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "AAaaa01AAaaa01AAaaa0" "PASS"
+# forbidden char
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "AAaaa01AAaaa01AAaaaà" "FAIL"
+# too much consecutive for upper
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "AAaaa01AAaaa01AAAAAA" "FAIL"
+# not enough upper
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "Aaaaa01aaaaa01aa.;.;" "FAIL"
+# not enough lower
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "aaAAA01BB0123AAA.;.;" "FAIL"
+# not enough digit
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "1AAAA.;BBB.;.;AA.;.;" "FAIL"
+# not enough points (no point for digit)
+launch_test "ppm2.conf" "uid=test,ou=users,dc=my-domain,dc=com" "AAaaaBBBBaaa01AAaaaa" "FAIL"
+
+# password in RDN
+launch_test "ppm3.conf" "uid=User_Password10-test,ou=users,dc=my-domain,dc=com" "Password10" "FAIL"
+launch_test "ppm3.conf" "uid=User_Passw0rd-test,ou=users,dc=my-domain,dc=com" "Password10" "PASS"
+launch_test "ppm3.conf" "uid=User-Pw-Test,ou=users,dc=my-domain,dc=com" "Password10" "PASS"
+
+
+echo "${RESULT} error(s) encountered"
+
+rm ppm1.conf ppm2.conf ppm3.conf
+exit ${RESULT}
+
diff --git a/contrib/slapd-modules/proxyOld/Makefile b/contrib/slapd-modules/proxyOld/Makefile
new file mode 100644
index 0000000..d92967c
--- /dev/null
+++ b/contrib/slapd-modules/proxyOld/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 2005-2022 The OpenLDAP Foundation.
+# Portions Copyright 2005 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = proxyOld.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+proxyOld.la:	proxyOld.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/proxyOld/README b/contrib/slapd-modules/proxyOld/README
new file mode 100644
index 0000000..bc5e4ab
--- /dev/null
+++ b/contrib/slapd-modules/proxyOld/README
@@ -0,0 +1,31 @@
+This directory contains a slapd module proxyOld that provides support
+for the obsolete draft-weltman-ldapb3-proxy-05 revision of the LDAP
+Proxy Authorization control. It is merely intended to provide compatibility
+in environments where other servers only recognize this old control.
+New installations should not use this code.
+
+To use the module, add:
+
+	moduleload <path to>proxyOld.so
+	...
+
+to your slapd configuration file. Since this is an obsolete feature,
+the control is registered with the SLAP_CTRL_HIDE flag so that it will
+not be advertised in the rootDSE's supportedControls attribute.
+
+This code only works as a dynamically loaded module.
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 1998-2022 The OpenLDAP Foundation.
+Portions Copyright 2005 Howard Chu, Symas Corp. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/proxyOld/proxyOld.c b/contrib/slapd-modules/proxyOld/proxyOld.c
new file mode 100644
index 0000000..2da6888
--- /dev/null
+++ b/contrib/slapd-modules/proxyOld/proxyOld.c
@@ -0,0 +1,128 @@
+/* proxyOld.c - module for supporting obsolete (rev 05) proxyAuthz control */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2005-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2005 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include <portable.h>
+
+#include <slap.h>
+
+#include <lber.h>
+/*
+#include <lber_pvt.h>
+#include <lutil.h>
+*/
+
+/* This code is based on draft-weltman-ldapv3-proxy-05. There are a lot
+ * of holes in that draft, it doesn't specify that the control is legal
+ * for Add operations, and it makes no mention of Extended operations.
+ * It also doesn't specify whether an empty LDAPDN is allowed in the
+ * control value.
+ *
+ * For usability purposes, we're copying the op / exop behavior from the
+ * newer -12 draft.
+ */
+#define LDAP_CONTROL_PROXY_AUTHZ05	"2.16.840.1.113730.3.4.12"
+
+static char *proxyOld_extops[] = {
+	LDAP_EXOP_MODIFY_PASSWD,
+	LDAP_EXOP_X_WHO_AM_I,
+	NULL
+};
+
+static int
+proxyOld_parse(
+	Operation *op,
+	SlapReply *rs,
+	LDAPControl *ctrl )
+{
+	int rc;
+	BerElement	*ber;
+	ber_tag_t	tag;
+	struct berval dn = BER_BVNULL;
+	struct berval authzDN = BER_BVNULL;
+
+
+	/* We hijack the flag for the new control. Clearly only one or the
+	 * other can be used at any given time.
+	 */
+	if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
+		rs->sr_text = "proxy authorization control specified multiple times";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	op->o_proxy_authz = ctrl->ldctl_iscritical
+		? SLAP_CONTROL_CRITICAL
+		: SLAP_CONTROL_NONCRITICAL;
+
+	/* Parse the control value
+	 *  proxyAuthzControlValue ::= SEQUENCE {
+	 *		proxyDN	LDAPDN
+	 *	}
+	 */
+	ber = ber_init( &ctrl->ldctl_value );
+	if ( ber == NULL ) {
+		rs->sr_text = "ber_init failed";
+		return LDAP_OTHER;
+	}
+
+	tag = ber_scanf( ber, "{m}", &dn );
+
+	if ( tag == LBER_ERROR ) {
+		rs->sr_text = "proxyOld control could not be decoded";
+		rc = LDAP_OTHER;
+		goto done;
+	}
+	if ( BER_BVISEMPTY( &dn )) {
+		Debug( LDAP_DEBUG_TRACE,
+			"proxyOld_parse: conn=%lu anonymous\n",
+				op->o_connid );
+		authzDN.bv_val = ch_strdup("");
+	} else {
+		Debug( LDAP_DEBUG_ARGS,
+			"proxyOld_parse: conn %lu ctrl DN=\"%s\"\n",
+				op->o_connid, dn.bv_val );
+		rc = dnNormalize( 0, NULL, NULL, &dn, &authzDN, op->o_tmpmemctx );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+		rc = slap_sasl_authorized( op, &op->o_ndn, &authzDN );
+		if ( rc ) {
+			op->o_tmpfree( authzDN.bv_val, op->o_tmpmemctx );
+			rs->sr_text = "not authorized to assume identity";
+			/* new spec uses LDAP_PROXY_AUTHZ_FAILURE */
+			rc = LDAP_INSUFFICIENT_ACCESS;
+			goto done;
+		}
+	}
+	free( op->o_ndn.bv_val );
+	free( op->o_dn.bv_val );
+	op->o_ndn = authzDN;
+	ber_dupbv( &op->o_dn, &authzDN );
+
+	Debug( LDAP_DEBUG_STATS, "conn=%lu op=%lu PROXYOLD dn=\"%s\"\n",
+		op->o_connid, op->o_opid,
+		authzDN.bv_len ? authzDN.bv_val : "anonymous" );
+	rc = LDAP_SUCCESS;
+done:
+	ber_free( ber, 1 );
+	return rc;
+}
+
+int init_module(int argc, char *argv[]) {
+	return register_supported_control( LDAP_CONTROL_PROXY_AUTHZ05,
+		SLAP_CTRL_GLOBAL|SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, proxyOld_extops,
+		proxyOld_parse, NULL );
+}
diff --git a/contrib/slapd-modules/rbac/Makefile b/contrib/slapd-modules/rbac/Makefile
new file mode 100755
index 0000000..1180bd6
--- /dev/null
+++ b/contrib/slapd-modules/rbac/Makefile
@@ -0,0 +1,63 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_RBAC=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = rbac.la
+MANPAGES = slapo-rbac.5
+
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+SRCS = rbac.c rbacperm.c rbacsess.c rbacuser.c rbacreq.c rbacaudit.c init.c rbacacl.c util.c jts.c
+OBJS = $(patsubst %.c,%.o,$(SRCS))
+LOBJS = $(patsubst %.c,%.lo,$(SRCS))
+
+.SUFFIXES: .c .lo
+
+%.lo: %.c rbac.h
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+rbac.la: $(LOBJS)
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+		-rpath $(moduledir) -module -o $@ $^ $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/rbac/init.c b/contrib/slapd-modules/rbac/init.c
new file mode 100644
index 0000000..1925ae5
--- /dev/null
+++ b/contrib/slapd-modules/rbac/init.c
@@ -0,0 +1,324 @@
+/* init.c - RBAC initialization */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+static slap_callback nullsc = { NULL, NULL, NULL, NULL };
+
+struct slap_rbac_internal_schema slap_rbac_schema;
+
+extern rbac_tenant_t rbac_tenants;
+extern int initialize_jts( void );
+
+rbac_ad_t rbac_session_ads[] = {
+	{ RBAC_SESSION_ID,
+		BER_BVC("rbacSessid"), &slap_rbac_schema.ad_session_id },
+	{ RBAC_USER_DN,
+		BER_BVC("rbacUserDN"), &slap_rbac_schema.ad_session_user_dn },
+	{ RBAC_ROLES,
+		BER_BVC("rbacRoles"), &slap_rbac_schema.ad_session_roles },
+	{ RBAC_ROLE_CONSTRAINTS,
+		BER_BVC("rbacRoleConstraints"),
+		&slap_rbac_schema.ad_session_role_constraints },
+	{ RBAC_UID,
+		BER_BVC("uid"), &slap_rbac_schema.ad_uid},
+	{ RBAC_TENANT_ID,
+		BER_BVC("tenantid"), &slap_rbac_schema.ad_tenant_id },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+rbac_ad_t rbac_session_permission_ads[] = {
+	{ RBAC_OP_NAME,
+		BER_BVC("rbacOpName"), &slap_rbac_schema.ad_permission_opname },
+	{ RBAC_OBJ_NAME,
+		BER_BVC("rbacObjName"), &slap_rbac_schema.ad_permission_objname },
+	{ RBAC_ROLE_NAME,
+		BER_BVC("rbacRoleName"), &slap_rbac_schema.ad_permission_rolename },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+rbac_ad_t audit_ads[] = {
+	{ RBAC_AUDIT_OP,
+		BER_BVC("rbacAuditOp"), &slap_rbac_schema.ad_audit_op },
+	{ RBAC_AUDIT_ID,
+		BER_BVC("rbacAuditId"), &slap_rbac_schema.ad_audit_id },
+	{ RBAC_AUDIT_ROLES,
+		BER_BVC("rbacAuditRoles"), &slap_rbac_schema.ad_audit_roles },
+	{ RBAC_AUDIT_REQUESTED_ROLES,
+		BER_BVC("rbacAuditRequestedRoles"),
+		&slap_rbac_schema.ad_audit_requested_roles
+	},
+	{ RBAC_AUDIT_TIMESTAMP,
+		BER_BVC("rbacAuditTimestamp"), &slap_rbac_schema.ad_audit_timestamp },
+	{ RBAC_AUDIT_RESOURCES,
+		BER_BVC("rbacAuditResources"), &slap_rbac_schema.ad_audit_resources },
+	{ RBAC_AUDIT_OBJS,
+		BER_BVC("rbacAuditObjects"), &slap_rbac_schema.ad_audit_objects },
+	{ RBAC_AUDIT_OPS,
+		BER_BVC("rbacAuditOperations"), &slap_rbac_schema.ad_audit_operations },
+	{ RBAC_AUDIT_RESULT,
+		BER_BVC("rbacAuditResult"), &slap_rbac_schema.ad_audit_result },
+	{ RBAC_AUDIT_PROPERTIES,
+		BER_BVC("rbacAuditProperties"), &slap_rbac_schema.ad_audit_properties },
+	{ RBAC_AUDIT_MSGS,
+		BER_BVC("rbacAuditMessages"), &slap_rbac_schema.ad_audit_messages },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+/* initialize repository attribute descriptions */
+
+static int
+initialize_sessions()
+{
+	int i, nattrs, rc = LDAP_SUCCESS;
+	const char *text;
+
+	for ( nattrs = 0; !BER_BVISNULL( &rbac_session_ads[nattrs].attr );
+			nattrs++ )
+		; /* count the number of attrs */
+
+	slap_rbac_schema.session_attrs =
+			slap_sl_calloc( sizeof(AttributeName), nattrs + 1, NULL );
+
+	for ( i = 0; !BER_BVISNULL( &rbac_session_ads[i].attr ); i++ ) {
+		rc = slap_bv2ad(
+				&rbac_session_ads[i].attr, rbac_session_ads[i].ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+		slap_rbac_schema.session_attrs[i].an_name = rbac_session_ads[i].attr;
+		slap_rbac_schema.session_attrs[i].an_desc = *rbac_session_ads[i].ad;
+	}
+
+	BER_BVZERO( &slap_rbac_schema.session_attrs[nattrs].an_name );
+
+done:;
+	return rc;
+}
+
+static int
+initialize_audit()
+{
+	int i, rc = LDAP_SUCCESS;
+	const char *text;
+
+	/* for audit */
+	for ( i = 0; !BER_BVISNULL( &audit_ads[i].attr ); i++ ) {
+		rc = slap_bv2ad( &audit_ads[i].attr, audit_ads[i].ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+	}
+
+done:;
+	return rc;
+}
+
+static int
+initialize_tenant(
+		BackendDB *be,
+		ConfigReply *cr,
+		tenant_info_t *tenantp,
+		int init_op )
+{
+	int rc = LDAP_SUCCESS;
+	Entry *e = NULL;
+	OperationBuffer opbuf;
+	Operation *op2;
+	SlapReply rs2 = { REP_RESULT };
+	Connection conn = { 0 };
+	struct berval rbac_container_oc = BER_BVC("rbacContainer");
+	struct berval rbac_audit_container = BER_BVC("audit");
+	struct berval rbac_session_container = BER_BVC("rbac");
+	void *thrctx = ldap_pvt_thread_pool_context();
+
+	e = entry_alloc();
+
+	switch ( init_op ) {
+		case INIT_AUDIT_CONTAINER:
+			ber_dupbv( &e->e_name, &tenantp->audit_basedn );
+			ber_dupbv( &e->e_nname, &tenantp->audit_basedn );
+
+			/* container cn */
+			attr_merge_one(
+					e, slap_schema.si_ad_cn, &rbac_audit_container, NULL );
+			break;
+		case INIT_SESSION_CONTAINER:
+			ber_dupbv( &e->e_name, &tenantp->sessions_basedn );
+			ber_dupbv( &e->e_nname, &tenantp->sessions_basedn );
+
+			/* rendered dynmaicObject for session */
+			attr_merge_one( e, slap_schema.si_ad_objectClass,
+					&slap_schema.si_oc_dynamicObject->soc_cname, NULL );
+
+			/* container cn */
+			attr_merge_one(
+					e, slap_schema.si_ad_cn, &rbac_session_container, NULL );
+			break;
+		default:
+			break;
+	}
+
+	attr_merge_one(
+			e, slap_schema.si_ad_objectClass, &rbac_container_oc, NULL );
+	attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
+			&rbac_container_oc, NULL );
+
+	/* store RBAC session */
+	connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+	op2 = &opbuf.ob_op;
+	op2->o_callback = &nullsc;
+	op2->o_tag = LDAP_REQ_ADD;
+	op2->o_protocol = LDAP_VERSION3;
+	op2->o_req_dn = e->e_name;
+	op2->o_req_ndn = e->e_nname;
+	op2->ora_e = e;
+	op2->o_bd = select_backend( &op2->o_req_ndn, 0 );
+	op2->o_dn = op2->o_bd->be_rootdn;
+	op2->o_ndn = op2->o_bd->be_rootndn;
+	rc = op2->o_bd->be_add( op2, &rs2 );
+
+	if ( e ) entry_free( e );
+
+	return rc;
+}
+
+int
+rbac_initialize_tenants( BackendDB *be, ConfigReply *cr )
+{
+	int rc = LDAP_SUCCESS;
+	rbac_tenant_t *tenantp = NULL;
+
+	for ( tenantp = &rbac_tenants; tenantp; tenantp = tenantp->next ) {
+		rc = initialize_tenant(
+				be, cr, &tenantp->tenant_info, INIT_AUDIT_CONTAINER );
+		if ( rc != LDAP_SUCCESS ) {
+			if ( rc == LDAP_ALREADY_EXISTS ) {
+				Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+						"audit container exists, tenant (%s)\n",
+						tenantp->tenant_info.tid.bv_val ?
+								tenantp->tenant_info.tid.bv_val :
+								"NULL" );
+				rc = LDAP_SUCCESS;
+			} else {
+				Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+						"failed to initialize (%s): rc (%d)\n",
+						tenantp->tenant_info.tid.bv_val ?
+								tenantp->tenant_info.tid.bv_val :
+								"NULL",
+						rc );
+				goto done;
+			}
+		} else {
+			Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+					"created audit container for tenant (%s):\n",
+					tenantp->tenant_info.tid.bv_val ?
+							tenantp->tenant_info.tid.bv_val :
+							"NULL" );
+		}
+		rc = initialize_tenant(
+				be, cr, &tenantp->tenant_info, INIT_SESSION_CONTAINER );
+		if ( rc != LDAP_SUCCESS ) {
+			if ( rc == LDAP_ALREADY_EXISTS ) {
+				Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+						"session container exists, tenant (%s)\n",
+						tenantp->tenant_info.tid.bv_val ?
+								tenantp->tenant_info.tid.bv_val :
+								"NULL" );
+				rc = LDAP_SUCCESS;
+			} else {
+				Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+						"failed to initialize (%s): rc (%d)\n",
+						tenantp->tenant_info.tid.bv_val ?
+								tenantp->tenant_info.tid.bv_val :
+								"NULL",
+						rc );
+				goto done;
+			}
+		} else {
+			Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+					"created session container for tenant (%s):\n",
+					tenantp->tenant_info.tid.bv_val ?
+							tenantp->tenant_info.tid.bv_val :
+							"NULL" );
+		}
+	}
+
+done:;
+
+	return rc;
+}
+
+static int
+initialize_rbac_session_permissions()
+{
+	int i, rc = LDAP_SUCCESS;
+	const char *text;
+
+	for ( i = 0; !BER_BVISNULL( &rbac_session_permission_ads[i].attr ); i++ ) {
+		rc = slap_bv2ad( &rbac_session_permission_ads[i].attr,
+				rbac_session_permission_ads[i].ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+	}
+
+done:;
+	return rc;
+}
+
+int
+rbac_initialize_repository()
+{
+	int rc = LDAP_SUCCESS;
+
+	rc = initialize_jts();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	rc = initialize_rbac_session_permissions();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	rc = initialize_sessions();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	rc = initialize_audit();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	return rc;
+}
diff --git a/contrib/slapd-modules/rbac/jts.c b/contrib/slapd-modules/rbac/jts.c
new file mode 100644
index 0000000..c7c072b
--- /dev/null
+++ b/contrib/slapd-modules/rbac/jts.c
@@ -0,0 +1,198 @@
+/* jts.c - RBAC JTS initialization */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+struct slap_rbac_tenant_schema slap_rbac_jts_schema;
+
+/* to replace all JTS schema initialization */
+rbac_ad_t ft_ads[] = {
+	{ RBAC_ROLE_ASSIGNMENT,
+		BER_BVC("ftRA"), &slap_rbac_jts_schema.ad_role },
+	{ RBAC_ROLE_CONSTRAINTS,
+		BER_BVC("ftRC"), &slap_rbac_jts_schema.ad_role_constraint },
+	{ RBAC_USER_CONSTRAINTS,
+		BER_BVC("ftCstr"), &slap_rbac_jts_schema.ad_user_constraint },
+	{ RBAC_UID,
+		BER_BVC("uid"), &slap_rbac_jts_schema.ad_uid },
+	{ RBAC_USERS,
+		BER_BVC("ftUsers"), &slap_rbac_jts_schema.ad_permission_users },
+	{ RBAC_ROLES,
+		BER_BVC("ftRoles"), &slap_rbac_jts_schema.ad_permission_roles },
+	{ RBAC_OBJ_NAME,
+		BER_BVC("ftObjNm"), &slap_rbac_jts_schema.ad_permission_objname },
+	{ RBAC_OP_NAME,
+		BER_BVC("ftOpNm"), &slap_rbac_jts_schema.ad_permission_opname },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+rbac_ad_t ft_user_ads[] = {
+	{ RBAC_ROLE_ASSIGNMENT,
+		BER_BVC("ftRA"), &slap_rbac_jts_schema.ad_role },
+	{ RBAC_ROLE_CONSTRAINTS,
+		BER_BVC("ftRC"), &slap_rbac_jts_schema.ad_role_constraint },
+	{ RBAC_USER_CONSTRAINTS,
+		BER_BVC("ftCstr"), &slap_rbac_jts_schema.ad_user_constraint },
+	{ RBAC_UID,
+		BER_BVC("uid"), &slap_rbac_jts_schema.ad_uid },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+rbac_ad_t ft_perm_ads[] = {
+	{ RBAC_USERS,
+		BER_BVC("ftUsers"), &slap_rbac_jts_schema.ad_permission_users },
+	{ RBAC_ROLES,
+		BER_BVC("ftRoles"), &slap_rbac_jts_schema.ad_permission_roles },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+rbac_ad_t ft_session_perm_ads[] = {
+	{ RBAC_USERS,
+		BER_BVC("ftUsers"), &slap_rbac_jts_schema.ad_permission_users },
+	{ RBAC_ROLES,
+		BER_BVC("ftRoles"), &slap_rbac_jts_schema.ad_permission_roles },
+	{ RBAC_OBJ_NAME,
+		BER_BVC("ftObjNm"), &slap_rbac_jts_schema.ad_permission_objname },
+	{ RBAC_OP_NAME,
+		BER_BVC("ftOpNm"), &slap_rbac_jts_schema.ad_permission_opname },
+
+	{ RBAC_NONE, BER_BVNULL, NULL }
+};
+
+static int
+initialize_jts_session_permission_ads()
+{
+	int i, nattrs, rc = LDAP_SUCCESS;
+
+	for ( nattrs = 0; !BER_BVISNULL( &ft_session_perm_ads[nattrs].attr );
+			nattrs++ )
+		; /* count the number of attrs */
+
+	slap_rbac_jts_schema.session_perm_attrs =
+			slap_sl_calloc( sizeof(AttributeName), nattrs + 1, NULL );
+
+	for ( i = 0; !BER_BVISNULL( &ft_session_perm_ads[i].attr ); i++ ) {
+		slap_rbac_jts_schema.session_perm_attrs[i].an_name =
+				ft_session_perm_ads[i].attr;
+		slap_rbac_jts_schema.session_perm_attrs[i].an_desc =
+				*ft_session_perm_ads[i].ad;
+	}
+
+	BER_BVZERO( &slap_rbac_jts_schema.session_perm_attrs[nattrs].an_name );
+
+	slap_rbac_jts_schema.session_permissions_ads = ft_session_perm_ads;
+
+	return rc;
+}
+
+static int
+initialize_jts_permission_ads()
+{
+	int i, nattrs, rc = LDAP_SUCCESS;
+
+	/* jts permissions configuration */
+
+	for ( nattrs = 0; !BER_BVISNULL( &ft_perm_ads[nattrs].attr ); nattrs++ )
+		; /* count the number of attrs */
+
+	slap_rbac_jts_schema.perm_attrs =
+			slap_sl_calloc( sizeof(AttributeName), nattrs + 1, NULL );
+
+	for ( i = 0; !BER_BVISNULL( &ft_perm_ads[i].attr ); i++ ) {
+		slap_rbac_jts_schema.perm_attrs[i].an_name = ft_perm_ads[i].attr;
+		slap_rbac_jts_schema.perm_attrs[i].an_desc = *ft_perm_ads[i].ad;
+	}
+
+	BER_BVZERO( &slap_rbac_jts_schema.perm_attrs[nattrs].an_name );
+
+	slap_rbac_jts_schema.permission_ads = ft_perm_ads;
+
+	return rc;
+}
+
+static int
+initialize_jts_user_ads()
+{
+	int i, nattrs, rc = LDAP_SUCCESS;
+
+	/* jts user attribute descriptions */
+
+	/* jts user attributes */
+	for ( nattrs = 0; !BER_BVISNULL( &ft_user_ads[nattrs].attr ); nattrs++ )
+		; /* count the number of attrs */
+
+	slap_rbac_jts_schema.user_attrs =
+			slap_sl_calloc( sizeof(AttributeName), nattrs + 1, NULL );
+
+	for ( i = 0; !BER_BVISNULL( &ft_user_ads[i].attr ); i++ ) {
+		slap_rbac_jts_schema.user_attrs[i].an_name = ft_user_ads[i].attr;
+		slap_rbac_jts_schema.user_attrs[i].an_desc = *ft_user_ads[i].ad;
+	}
+
+	BER_BVZERO( &slap_rbac_jts_schema.user_attrs[nattrs].an_name );
+
+	slap_rbac_jts_schema.user_ads = ft_user_ads;
+
+	return rc;
+}
+
+int
+initialize_jts()
+{
+	int i, rc;
+	const char *text;
+
+	/* jts attributes */
+	for ( i = 0; !BER_BVISNULL( &ft_ads[i].attr ); i++ ) {
+		rc = slap_bv2ad( &ft_ads[i].attr, ft_ads[i].ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+	}
+
+	rc = initialize_jts_user_ads();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	rc = initialize_jts_permission_ads();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	rc = initialize_jts_session_permission_ads();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+done:;
+	return rc;
+}
diff --git a/contrib/slapd-modules/rbac/ldap_rbac.h b/contrib/slapd-modules/rbac/ldap_rbac.h
new file mode 100644
index 0000000..d57fe6e
--- /dev/null
+++ b/contrib/slapd-modules/rbac/ldap_rbac.h
@@ -0,0 +1,55 @@
+#ifndef LDAP_RBAC_H
+#define LDAP_RBAC_H
+
+/* extended operations for RBAC */
+#define LDAP_RBAC_EXOP_CREATE_SESSION   "1.3.6.1.4.1.4203.555.1" /* RFC xxxx */
+#define LDAP_RBAC_EXOP_CHECK_ACCESS     "1.3.6.1.4.1.4203.555.2"
+#define LDAP_RBAC_EXOP_ADD_ACTIVE_ROLE  "1.3.6.1.4.1.4203.555.3"
+#define LDAP_RBAC_EXOP_DROP_ACTIVE_ROLE "1.3.6.1.4.1.4203.555.4"
+#define LDAP_RBAC_EXOP_DELETE_SESSION   "1.3.6.1.4.1.4203.555.5"
+#define LDAP_RBAC_EXOP_SESSION_ROLES    "1.3.6.1.4.1.4203.555.6"
+#define LDAP_RBAC_EXOP_SESSION_PERMISSIONS "1.3.6.1.4.1.4203.555.7"
+
+#define LDAP_TAG_EXOP_RBAC_SESSION_ID ((ber_tag_t)0x80U)
+#define LDAP_TAG_EXOP_RBAC_TENANT_ID ((ber_tag_t)0x81U)
+#define LDAP_TAG_EXOP_RBAC_USER_ID ((ber_tag_t)0x82U)
+#define LDAP_TAG_EXOP_RBAC_USER ((ber_tag_t)0x80U)
+#define LDAP_TAG_EXOP_RBAC_AUTHTOK ((ber_tag_t)0x83U)
+#define LDAP_TAG_EXOP_RBAC_ACTIVE_ROLE ((ber_tag_t)0xA4U)
+#define LDAP_TAG_EXOP_RBAC_OPNAME ((ber_tag_t)0x81U)
+#define LDAP_TAG_EXOP_RBAC_OBJNAME ((ber_tag_t)0x82U)
+#define LDAP_TAG_EXOP_RBAC_OBJID ((ber_tag_t)0x83U)
+#define LDAP_TAG_EXOP_RBAC_PWPOLICY_STATE ((ber_tag_t)0x85U)
+#define LDAP_TAG_EXOP_RBAC_PWPOLICY_VALUE ((ber_tag_t)0x86U)
+#define LDAP_TAG_EXOP_RBAC_ROLES ((ber_tag_t)0x04U)
+
+#define LDAP_TAG_EXOP_RBAC_USER_ID_SESS	((ber_tag_t)0x80U)
+#define LDAP_TAG_EXOP_RBAC_SESSION_ID_SESS	((ber_tag_t)0x81U)
+#define LDAP_TAG_EXOP_RBAC_ROLE_NM_SESS	((ber_tag_t)0x82U)
+
+#define RBAC_REQ_CREATE_SESSION      0
+#define RBAC_REQ_CHECK_ACCESS        1
+#define RBAC_REQ_ADD_ACTIVE_ROLE     2
+#define RBAC_REQ_DROP_ACTIVE_ROLE    3
+#define RBAC_REQ_DELETE_SESSION      4
+#define RBAC_REQ_SESSION_PERMISSIONS 5
+#define RBAC_REQ_SESSION_ROLES       6
+
+/* defines for password policy */
+#define RBAC_BIND_NEW_AUTHTOK_REQD 1
+
+#define RBAC_PASSWORD_GOOD 0
+#define RBAC_PASSWORD_EXPIRATION_WARNING 11
+#define RBAC_PASSWORD_GRACE_WARNING 12
+#define RBAC_PASSWORD_HAS_EXPIRED 100
+#define RBAC_ACCOUNT_LOCKED 101
+#define RBAC_CHANGE_AFTER_RESET 102
+#define RBAC_NO_MODIFICATIONS 103
+#define RBAC_MUST_SUPPLY_OLD 104
+#define RBAC_INSUFFICIENT_QUALITY 105
+#define RBAC_PASSWORD_TOO_SHORT 106
+#define RBAC_PASSWORD_TOO_YOUNG 107
+#define RBAC_HISTORY_VIOLATION 108
+#define RBAC_ACCOUNT_LOCKED_CONSTRAINTS 109
+
+#endif /* LDAP_RBAC_H */
diff --git a/contrib/slapd-modules/rbac/rbac.c b/contrib/slapd-modules/rbac/rbac.c
new file mode 100644
index 0000000..4d2cff5
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbac.c
@@ -0,0 +1,2169 @@
+/* rbac.c - RBAC main file */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2013-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+#define RBAC_REQ 1
+
+static slap_overinst rbac;
+
+static struct berval slap_EXOP_CREATE_SESSION =
+		BER_BVC(LDAP_RBAC_EXOP_CREATE_SESSION);
+static struct berval slap_EXOP_CHECK_ACCESS =
+		BER_BVC(LDAP_RBAC_EXOP_CHECK_ACCESS);
+static struct berval slap_EXOP_ADD_ACTIVE_ROLE =
+		BER_BVC(LDAP_RBAC_EXOP_ADD_ACTIVE_ROLE);
+static struct berval slap_EXOP_DROP_ACTIVE_ROLE =
+		BER_BVC(LDAP_RBAC_EXOP_DROP_ACTIVE_ROLE);
+static struct berval slap_EXOP_DELETE_SESSION =
+		BER_BVC(LDAP_RBAC_EXOP_DELETE_SESSION);
+static struct berval slap_EXOP_SESSION_ROLES =
+		BER_BVC(LDAP_RBAC_EXOP_SESSION_ROLES);
+
+rbac_tenant_t rbac_tenants = {
+	{
+		.schema = &slap_rbac_jts_schema,
+	},
+	NULL
+};
+
+static ConfigDriver rbac_cf_gen;
+
+static ConfigTable rbaccfg[] = {
+	{ "rbac-default-users-base-dn", "usersDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_DEFAULT_USERS_BASE_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.1 NAME 'olcRBACDefaultUsersBaseDn' "
+			"DESC 'default Base DN for RBAC users ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-default-roles-base-dn", "rolesDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_DEFAULT_ROLES_BASE_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.2 NAME 'olcRBACDefaultRolesBaseDn' "
+			"DESC 'default base DN for RBAC roles ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-default-permissions-base-dn", "permissionsDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_DEFAULT_PERMISSIONS_BASE_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.3 NAME 'olcRBACDefaultPermissionsBaseDn' "
+			"DESC 'default base DN for RBAC permissions ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-default-sessions-base-dn", "sessionsDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_DEFAULT_SESSIONS_BASE_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.4 NAME 'olcRBACDefaultSessionsBaseDn' "
+			"DESC 'default base DN for RBAC permissions ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-admin", "adminDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_ADMIN_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.5 NAME 'olcRBACAdminDn' "
+			"DESC 'default admin DN for RBAC repository ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-pwd", "adminPwd", 2, 2, 0,
+		ARG_MAGIC|RBAC_ADMIN_PWD,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.6 NAME 'olcRBACAdminPwd' "
+			"DESC 'default admin pwd for RBAC repository ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-session-admin", "sessionAdminDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_SESSION_ADMIN_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.7 NAME 'olcRBACSessionAdminDn' "
+			"DESC 'admin DN for RBAC session repository ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-session-admin-pwd", "sessionAdminPwd", 2, 2, 0,
+		ARG_MAGIC|RBAC_SESSION_ADMIN_PWD,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.8 NAME 'olcRBACSessionAdminPwd' "
+			"DESC 'admin pwd for RBAC session repository ' "
+			"SYNTAX OMsDirectoryString SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "tenant", "tenant", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_TENANT,
+		rbac_cf_gen, "(OLcfgCtAt:7.9 NAME 'olcRBACTenant' "
+			"DESC 'RBAC tenant ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-default-audit-base-dn", "auditDN", 2, 2, 0,
+		ARG_MAGIC|ARG_DN|RBAC_DEFAULT_AUDIT_BASE_DN,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.10 NAME 'olcRBACDefaultAuditBaseDn' "
+			"DESC 'default base DN for RBAC audit records ' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+	{ "rbac-default-tenant-id", "tenantId", 2, 2, 0,
+		ARG_MAGIC|RBAC_DEFAULT_TENANT_ID,
+		rbac_cf_gen,
+		"(OLcfgCtAt:7.11 NAME 'olcRBACDefaultTenantId' "
+			"DESC 'default tenant id' "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+		NULL, NULL
+	},
+
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs rbac_ocs[] = {
+	{ "( OLcfgCtOc:7.1 "
+			"NAME 'olcRBACConfig' "
+			"DESC 'RBAC configuration' "
+			"SUP olcOverlayConfig "
+			"MAY ( olcRBACDefaultUsersBaseDn $ olcRBACDefaultRolesBaseDn $ "
+			"olcRBACDefaultPermissionsBaseDn $ olcRBACDefaultSessionsBaseDn $ "
+			"olcRBACAdminDn $  olcRBACAdminPwd $ olcRBACSessionAdminDn $ "
+			"olcRBACSessionAdminPwd) )",
+		Cft_Overlay, rbaccfg },
+
+	{ NULL, 0, NULL }
+};
+
+static slap_verbmasks rbac_keys[] = {
+	{ BER_BVC("default_users_base_dn"), RBAC_DEFAULT_USERS_BASE_DN },
+	{ BER_BVC("default_roles_base_dn"), RBAC_DEFAULT_ROLES_BASE_DN },
+	{ BER_BVC("default_permissions_base_dn"),
+		RBAC_DEFAULT_PERMISSIONS_BASE_DN },
+	{ BER_BVC("tenant"), RBAC_TENANT },
+
+	{ BER_BVNULL, 0 }
+};
+
+static slap_verbmasks rbac_tenant_keys[] = {
+	{ BER_BVC("id"), RBAC_TENANT_ID },
+	{ BER_BVC("users_base_dn"), RBAC_USERS_BASE_DN },
+	{ BER_BVC("roles_base_dn"), RBAC_ROLES_BASE_DN },
+	{ BER_BVC("permissions_base_dn"), RBAC_PERMISSIONS_BASE_DN },
+
+	{ BER_BVNULL, 0 }
+};
+
+static void
+rbac_tenant_parse( char *tenent_info, tenant_info_t *tenants )
+{
+	return;
+}
+
+static int
+rbac_cf_gen( ConfigArgs *c )
+{
+	slap_overinst *on = (slap_overinst *)c->bi;
+	rbac_tenant_t *ri = &rbac_tenants;
+	int rc = 0;
+
+	if ( c->op == SLAP_CONFIG_EMIT ) {
+		switch ( c->type ) {
+			case RBAC_DEFAULT_USERS_BASE_DN:
+				value_add_one( &c->rvalue_vals, &ri->tenant_info.users_basedn );
+				break;
+			case RBAC_DEFAULT_ROLES_BASE_DN:
+				value_add_one( &c->rvalue_vals, &ri->tenant_info.roles_basedn );
+				break;
+			case RBAC_DEFAULT_PERMISSIONS_BASE_DN:
+				value_add_one(
+						&c->rvalue_vals, &ri->tenant_info.permissions_basedn );
+				break;
+			case RBAC_DEFAULT_SESSIONS_BASE_DN:
+				value_add_one(
+						&c->rvalue_vals, &ri->tenant_info.sessions_basedn );
+				break;
+			case RBAC_DEFAULT_AUDIT_BASE_DN:
+				value_add_one( &c->rvalue_vals, &ri->tenant_info.audit_basedn );
+				break;
+			case RBAC_ADMIN_DN:
+				value_add_one( &c->rvalue_vals, &ri->tenant_info.admin );
+				break;
+			case RBAC_ADMIN_PWD:
+				value_add_one( &c->rvalue_vals, &ri->tenant_info.pwd );
+				break;
+			case RBAC_SESSION_ADMIN_DN:
+				value_add_one(
+						&c->rvalue_vals, &ri->tenant_info.session_admin );
+				break;
+			case RBAC_DEFAULT_TENANT_ID:
+				value_add_one( &c->rvalue_vals, &ri->tenant_info.tid );
+				break;
+			default:
+				break;
+		}
+		return rc;
+	} else if ( c->op == LDAP_MOD_DELETE ) {
+		/* FIXME */
+		return 1;
+	}
+	switch ( c->type ) {
+		case RBAC_DEFAULT_USERS_BASE_DN: {
+			struct berval dn = BER_BVNULL;
+			ber_str2bv( c->argv[1], 0, 0, &dn );
+			rc = dnNormalize(
+					0, NULL, NULL, &dn, &ri->tenant_info.users_basedn, NULL );
+			break;
+		}
+		case RBAC_DEFAULT_ROLES_BASE_DN: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.roles_basedn );
+			break;
+		}
+		case RBAC_DEFAULT_PERMISSIONS_BASE_DN: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.permissions_basedn );
+			break;
+		}
+		case RBAC_DEFAULT_SESSIONS_BASE_DN: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.sessions_basedn );
+			break;
+		}
+		case RBAC_DEFAULT_AUDIT_BASE_DN: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.audit_basedn );
+			break;
+		}
+		case RBAC_ADMIN_DN: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.admin );
+			break;
+		}
+		case RBAC_ADMIN_PWD: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.pwd );
+			break;
+		}
+		case RBAC_SESSION_ADMIN_DN: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.session_admin );
+			break;
+		}
+		case RBAC_SESSION_ADMIN_PWD: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.session_admin_pwd );
+			break;
+		}
+		case RBAC_DEFAULT_TENANT_ID: {
+			ber_str2bv( c->argv[1], 0, 1, &ri->tenant_info.tid );
+			break;
+		}
+		case RBAC_TENANT: {
+			rbac_tenant_parse( c->argv[1], &ri->tenant_info );
+			break;
+		}
+		default:
+			break;
+	}
+
+	return rc;
+}
+
+/*
+ * rbac configuration
+ */
+
+tenant_info_t *
+rbac_tid2tenant( struct berval *tid )
+{
+	/* return the only tenant for now */
+	return &rbac_tenants.tenant_info;
+}
+
+//{ BER_BVC(LDAP_RBAC_EXOP_SESSION_ROLES), rbac_session_roles },
+
+static int
+slap_parse_rbac_session_roles(
+		struct berval *in,
+		rbac_req_t **reqpp,
+		const char **text,
+		void *ctx )
+{
+	int rc = LDAP_SUCCESS;
+	struct berval reqdata = BER_BVNULL;
+	rbac_req_t *reqp = NULL;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_tag_t tag;
+	ber_len_t len = -1;
+
+	*text = NULL;
+
+	if ( in == NULL || in->bv_len == 0 ) {
+		*text = "empty request data field in rbac_session_roles exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	reqp = rbac_alloc_req( RBAC_REQ_SESSION_ROLES );
+
+	if ( !reqp ) {
+		*text = "unable to allocate memory for rbac_session_roles exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	ber_dupbv_x( &reqdata, in, ctx );
+
+	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+	ber_init2( ber, &reqdata, 0 );
+
+	tag = ber_scanf( ber, "{" /*}*/ );
+
+	if ( tag == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_session_roles: "
+				"decoding error.\n" );
+		goto decoding_error;
+	}
+
+	tag = ber_peek_tag( ber, &len );
+	if ( tag == LDAP_TAG_EXOP_RBAC_USER_ID_SESS ) {
+		struct berval uid;
+		tag = ber_scanf( ber, "m", &uid );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_session_roles: "
+					"user id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->uid, &uid, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	//tag = ber_peek_tag( ber, &len );
+	if ( tag == LDAP_TAG_EXOP_RBAC_SESSION_ID_SESS ) {
+		struct berval sessid;
+		tag = ber_scanf( ber, "m", &sessid );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_session_roles: "
+					"session id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->sessid, &sessid, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag != LBER_DEFAULT || len != 0 ) {
+decoding_error:;
+
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_session_roles: "
+				"decoding error, len=%ld\n",
+				(long)len );
+		rc = LDAP_PROTOCOL_ERROR;
+		*text = "data decoding error";
+	}
+
+	if ( rc == LDAP_SUCCESS ) {
+		*reqpp = reqp;
+	} else {
+		rbac_free_req( reqp );
+		*reqpp = NULL;
+	}
+
+	if ( !BER_BVISNULL( &reqdata ) ) {
+		ber_memfree_x( reqdata.bv_val, ctx );
+	}
+
+	return rc;
+}
+
+static int
+rbac_session_roles( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	const struct berval rbac_op = BER_BVC("SessionRoles");
+	rbac_req_t *reqp = NULL;
+	rbac_session_t *sessp;
+	int rc;
+
+	rs->sr_err = slap_parse_rbac_session_roles(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_roles: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* checking whether the session is owned by the user */
+	if ( !rbac_is_session_owner( sessp, reqp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_roles: "
+				"session not owned by user\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	rc = rbac_int_delete_session( op, sessp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_roles: "
+				"unable to delete session\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/*
+	 * If we wanted to...
+	 * load these roles into a response with a sequence nested within a
+	 * sequence: (No, we're not actually doing this here.)
+	 *		0x30 LL		ber_printf( ber,  "{" );
+	 *			0x04 L1
+	 *				0x04 L2 a b c d
+	 *				0x04 L3 e f g h
+	 *				0x04 L4 i j k l
+	 * add all three ber_bvarray_add_x( &roles, &tmpbv, NULL );
+	 * close it      ber_printf( ber, "t{W}", LDAP_TAG_EXOP_RBAC_ROLES, roles );
+	 */
+
+	/*
+	 * Instead we are...
+	 * loading these roles into the response within a sequence:  (Yes, we are doing this here.)
+	 *		0x30 LL		ber_printf( ber,  "{" );
+	 *			0x04 L1 a b c d
+	 *			0x04 L2 e f g h
+	 *			0x04 L3 i j k l
+	 *	add all three ber_bvarray_add_x( &roles, &tmpbv, NULL );
+	 *	close it      ber_printf( ber, "tW", LDAP_TAG_EXOP_RBAC_ROLES, roles );
+	 */
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_init_w_nullc( ber, LBER_USE_DER );
+	BerVarray roles = NULL;
+	if ( sessp->roles ) {
+		struct berval tmpbv;
+		// open the sequence:
+		ber_printf( ber, "{" /*}*/ );
+		//char *role;
+		int i = 0;
+		//BerVarray roles = NULL;
+		for ( i = 0; !BER_BVISNULL( &sessp->roles[i] ); i++ ) {
+			tmpbv.bv_val = sessp->roles[i].bv_val;
+			tmpbv.bv_len = sessp->roles[i].bv_len;
+			// add role name:
+			ber_bvarray_add_x( &roles, &tmpbv, NULL );
+
+			//LBER_F( int )
+			//ber_bvecadd_x LDAP_P(( struct berval ***bvec,
+			//	struct berval *bv, void *ctx ));
+
+			// first attempt at sequence within a sequence...
+			// open another sequence:
+			/*
+			ber_printf( ber, "{" } );
+			// add role name (again):
+			ber_bvarray_add_x(&roles, &tmpbv, NULL);
+			// close the nested sequence:
+			ber_printf( ber, { "}" );
+*/
+			// end 2nd sequence
+		}
+		/*
+		 * This is how we add several octet strings at one time. An array of struct berval's is supplied.
+		 * The array is terminated by a struct berval with a NULL bv_val.
+		 * Note that a construct like '{W}' is required to get an actual SEQUENCE OF octet strings.
+		 * But here we are using 'tW' which allows passing a collection of octets w/out a nesting within a sequence.
+         */
+		ber_printf( ber, "tW",
+				LDAP_TAG_EXOP_RBAC_ROLES, roles);
+
+		// TODO: determine why free on roles array causes a seg fault:
+		//ber_bvarray_free_x(roles, NULL);
+
+		// close the sequence:
+		ber_printf( ber, /*{*/ "N}" );
+	}
+
+	if ( rc < 0 ) {
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+	} else {
+		(void)ber_flatten( ber, &rs->sr_rspdata );
+		rs->sr_err = LDAP_SUCCESS;
+	}
+	ber_free_buf( ber );
+	// END LOAD ROLES INTO RESPONSE
+
+done:;
+	rs->sr_err = rc;
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_SESSION_ROLES.bv_val );
+
+	/* generate audit log */
+	rbac_audit(
+			op, SessionRoles, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+	rbac_free_session( sessp );
+	rbac_free_req( reqp );
+	return rs->sr_err;
+}
+
+static int
+rbac_session_rolesx( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	const struct berval rbac_op = BER_BVC("SessionRoles");
+	rbac_session_t *sessp = NULL;
+	rbac_req_t *reqp = NULL;
+	int rc;
+
+	rs->sr_err = slap_parse_rbac_session_roles(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_roles: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* checking whether the session is owned by the user */
+	if ( !rbac_is_session_owner( sessp, reqp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_roles: "
+				"session not owned by user\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	rc = rbac_int_delete_session( op, sessp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_roles: "
+				"unable to delete session\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/*
+	 * If we wanted to...
+	 * load these roles into a response with a sequence nested within a
+	 * sequence: (No, we're not actually doing this here.)
+	 *		0x30 LL		ber_printf( ber,  "{" );
+	 *			0x04 L1
+	 *				0x04 L2 a b c d
+	 *				0x04 L3 e f g h
+	 *				0x04 L4 i j k l
+	 * add all three ber_bvarray_add_x( &roles, &tmpbv, NULL );
+	 * close it      ber_printf( ber, "t{W}", LDAP_TAG_EXOP_RBAC_ROLES, roles );
+	 */
+
+	/*
+	 * Instead we are...
+	 * loading these roles into the response within a sequence:  (Yes, we are doing this here.)
+	 *		0x30 LL		ber_printf( ber,  "{" );
+	 *			0x04 L1 a b c d
+	 *			0x04 L2 e f g h
+	 *			0x04 L3 i j k l
+	 *	add all three ber_bvarray_add_x( &roles, &tmpbv, NULL );
+	 *	close it      ber_printf( ber, "tW", LDAP_TAG_EXOP_RBAC_ROLES, roles );
+	 */
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_init_w_nullc( ber, LBER_USE_DER );
+	BerVarray roles = NULL;
+	if ( sessp->roles ) {
+		struct berval tmpbv;
+		// open the sequence:
+		ber_printf( ber, "{" /*}*/ );
+		//char *role;
+		int i = 0;
+		//BerVarray roles = NULL;
+		for ( i = 0; !BER_BVISNULL( &sessp->roles[i] ); i++ ) {
+			tmpbv.bv_val = sessp->roles[i].bv_val;
+			tmpbv.bv_len = sessp->roles[i].bv_len;
+			// add role name:
+			ber_bvarray_add_x( &roles, &tmpbv, NULL );
+
+			// first attempt at sequence within a sequence...
+			// open another sequence:
+			/*
+			ber_printf( ber, "{" } );
+			// add role name (again):
+			ber_bvarray_add_x(&roles, &tmpbv, NULL);
+			// close the nested sequence:
+			ber_printf( ber, { "}" );
+*/
+			// end 2nd sequence
+		}
+		/*
+		 * This is how we add several octet strings at one time. An array of struct berval's is supplied.
+		 * The array is terminated by a struct berval with a NULL bv_val.
+		 * Note that a construct like '{W}' is required to get an actual SEQUENCE OF octet strings.
+		 * But here we are using 'tW' which allows passing a collection of octets w/out a nesting within a sequence.
+         */
+		ber_printf( ber, "tW",
+				LDAP_TAG_EXOP_RBAC_ROLES, roles);
+
+		// TODO: determine why free on roles array causes a seg fault:
+		//ber_bvarray_free_x(roles, NULL);
+
+		// close the sequence:
+		ber_printf( ber, /*{*/ "N}" );
+	}
+
+	if ( rc < 0 ) {
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+	} else {
+		(void)ber_flatten( ber, &rs->sr_rspdata );
+		rs->sr_err = LDAP_SUCCESS;
+	}
+	ber_free_buf( ber );
+	// END LOAD ROLES INTO RESPONSE
+
+done:;
+	rs->sr_err = rc;
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_SESSION_ROLES.bv_val );
+
+	/* generate audit log */
+	rbac_audit(
+			op, SessionRoles, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+	rbac_free_session( sessp );
+	rbac_free_req( reqp );
+	return rs->sr_err;
+}
+
+/*
+ * slap_parse_rbac_create_session
+ */
+static int
+slap_parse_rbac_create_session(
+		struct berval *in,
+		rbac_req_t **reqpp,
+		const char **text,
+		void *ctx )
+{
+	int rc = LDAP_SUCCESS;
+	struct berval reqdata = BER_BVNULL;
+	rbac_req_t *reqp = NULL;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_tag_t tag;
+	ber_len_t len = -1;
+
+	*text = NULL;
+
+	if ( in == NULL || in->bv_len == 0 ) {
+		*text = "empty request data field in rbac_create_session exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	reqp = rbac_alloc_req( RBAC_REQ_CREATE_SESSION );
+
+	if ( !reqp ) {
+		*text = "unable to allocate memory for bac_create_session exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	ber_dupbv_x( &reqdata, in, ctx );
+
+	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+	ber_init2( ber, &reqdata, 0 );
+
+	tag = ber_scanf( ber, "{" /*}*/ );
+
+	if ( tag == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+				"decoding error.\n" );
+		goto decoding_error;
+	}
+
+	// Order: 1. sessionId, 2. tenantId, 3. userId, 4. password and 5. roles
+	/* must-have */
+	tag = ber_peek_tag( ber, &len );
+
+	// 1. SESSIONID
+	if ( tag == LDAP_TAG_EXOP_RBAC_SESSION_ID ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+					"session id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->sessid, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// 2. TENANT ID
+	if ( tag == LDAP_TAG_EXOP_RBAC_TENANT_ID ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+					"tenant id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->tenantid, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// 3. USERID
+	if ( tag == LDAP_TAG_EXOP_RBAC_USER_ID ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+					"user id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->uid, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// 4. PASSWORD
+	if ( tag == LDAP_TAG_EXOP_RBAC_AUTHTOK ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv);
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+					"authtok parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->authtok, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// 5. ROLES
+	if ( tag == LDAP_TAG_EXOP_RBAC_ACTIVE_ROLE ) {
+		tag = ber_scanf( ber, "W", &reqp->roles);
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+					"role parse failed.\n" );
+			goto decoding_error;
+		}
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag != LBER_DEFAULT || len != 0 ) {
+decoding_error:;
+
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+				"decoding error, len=%ld\n",
+				(long)len );
+		rc = LDAP_PROTOCOL_ERROR;
+		*text = "data decoding error";
+	}
+
+	if ( rc == LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "slap_parse_rbac_create_session: "
+				"SUCCESS\n" );
+
+		*reqpp = reqp;
+	} else {
+		Debug( LDAP_DEBUG_ANY, "slap_parse_rbac_create_session: "
+				"NO SUCCESS RC=%d\n", rc );
+
+		rbac_free_req( reqp );
+		*reqpp = NULL;
+	}
+
+	if ( !BER_BVISNULL( &reqdata ) ) {
+		ber_memfree_x( reqdata.bv_val, ctx );
+	}
+
+	return rc;
+}
+
+/*
+ * rbac_create_session:
+ *     1. authenticate user
+ *     2. evaluate pwd policy
+ *     3. create session
+ */
+static int
+rbac_create_session( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	struct berval rbac_op = BER_BVC("CreateSession");
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	int rc = LDAP_SUCCESS;
+	rbac_session_t *sessp = NULL;
+	rbac_user_t *userp = NULL;
+	rbac_req_t *reqp = NULL;
+
+	rs->sr_err = slap_parse_rbac_create_session(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	/* read user entry */
+	userp = rbac_read_user( op, reqp );
+	if ( !userp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_create_session: "
+				"unable to read user entry\n" );
+		rs->sr_err = LDAP_NO_SUCH_OBJECT;
+		rs->sr_text = "rbac_create_session: unable to read user entry";
+		goto done;
+	}
+
+	if ( !BER_BVISNULL( &userp->password ) ) {
+		/* if request is with pwd, authenticate the user */
+		rc = rbac_authenticate_user( op, userp );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY, "rbac_create_session: "
+					"rbac_authenticate_user failed!\n" );
+			rs->sr_err = LDAP_INVALID_CREDENTIALS;
+			rs->sr_text = "rbac_create_session: invalid credential";
+			goto done;
+		}
+		/*
+		rbac_user_t *ui = op->o_callback->sc_private;
+		int pVal = ui->authz;
+		printf("password reset val=%d", pVal );
+*/
+
+	} else {
+		/* no pwd is provided, check whether the requesting session */
+		/* id has the access privilege to create a session on behalf */
+		/* of the user */
+		rc = rbac_create_session_acl_check( &reqp->sessid, userp );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY, "rbac_create_session: "
+					"rbac_authenticate_user failed!\n" );
+			rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+			rs->sr_text = "rbac_create_session: session permission denied";
+			goto done;
+		}
+	}
+
+	/* check user temporal constraint */
+	rc = rbac_user_temporal_constraint( userp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_create_session: "
+				"rbac_user_temporal_constraint() failed!\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text = "rbac_create_session: temporal constraint violation";
+		goto done;
+	}
+
+	sessp = rbac_alloc_session();
+	if ( !sessp ) {
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text = "rbac_create_session: unable to allocate session";
+		goto done;
+	}
+
+	rc = activate_session_roles( sessp, reqp, userp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_create_session: "
+				"failed to activate roles to session!\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text =
+				"rbac_create_session: failed to activate roles into session";
+		goto done;
+	}
+
+	/* store uid and tenant id in session */
+	ber_dupbv( &sessp->userdn, &userp->dn );
+	ber_dupbv( &sessp->uid, &reqp->uid );
+	ber_dupbv( &sessp->tenantid, &reqp->tenantid );
+
+	/* register RBAC session */
+	rc = rbac_register_session( op, rs, sessp );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	ber_init_w_nullc( ber, LBER_USE_DER );
+	rc = ber_printf( ber, "{tO}", LDAP_TAG_EXOP_RBAC_SESSION_ID,
+			&sessp->sessid );
+	if ( rc < 0 ) {
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+	} else {
+		(void)ber_flatten( ber, &rs->sr_rspdata );
+		rs->sr_rspoid = ch_strdup( slap_EXOP_CREATE_SESSION.bv_val );
+		rs->sr_err = LDAP_SUCCESS;
+	}
+
+	ber_free_buf( ber );
+
+done:;
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CREATE_SESSION.bv_val );
+	/* generate audit log */
+	rbac_audit(
+			op, CreateSession, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+
+	rbac_free_req( reqp );
+	rbac_free_session( sessp );
+
+	//if (rs->sr_err != LDAP_SUCCESS) {
+	//send_ldap_result( op, rs );
+	//}
+
+	return rs->sr_err;
+}
+
+/*
+ * slap_parse_rbac_check_access
+ */
+static int
+slap_parse_rbac_check_access(
+		struct berval *in,
+		rbac_req_t **reqpp,
+		const char **text,
+		void *ctx )
+{
+	int rc = LDAP_SUCCESS;
+	struct berval reqdata = BER_BVNULL;
+	rbac_req_t *reqp = NULL;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_tag_t tag;
+	ber_len_t len;
+
+	*text = NULL;
+	reqp = rbac_alloc_req( RBAC_REQ_CHECK_ACCESS );
+
+	if ( !reqp ) {
+		*text = "unable to allocate memory for slap_parse_rbac_check_access";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	if ( in == NULL || in->bv_len == 0 ) {
+		*text = "empty request data field in rbac_check_access exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	ber_dupbv_x( &reqdata, in, ctx );
+
+	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+	ber_init2( ber, &reqdata, 0 );
+
+	tag = ber_scanf( ber, "{" /*}*/ );
+
+	if ( tag == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+				"decoding error.\n" );
+		goto decoding_error;
+	}
+
+	// sessionId is required:
+	tag = ber_peek_tag( ber, &len );
+	if ( tag != LDAP_TAG_EXOP_RBAC_SESSION_ID ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+				"decoding error.\n" );
+		goto decoding_error;
+	} else {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+					"session id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->sessid, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// operationName is required:
+	if ( tag != LDAP_TAG_EXOP_RBAC_OPNAME ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+				"decoding error.\n" );
+		goto decoding_error;
+	} else {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+					"opname parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->opname, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// objectName is required:
+	if ( tag != LDAP_TAG_EXOP_RBAC_OBJNAME ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+				"decoding error.\n" );
+		goto decoding_error;
+	} else {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+					"objname parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->objname, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	// objectId is optional:
+	if ( tag == LDAP_TAG_EXOP_RBAC_OBJID ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+					"objid parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->objid, &bv, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag != LBER_DEFAULT || len != 0 ) {
+decoding_error:;
+
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_check_access: "
+				"decoding error, len=%ld\n",
+				(long)len );
+		rc = LDAP_PROTOCOL_ERROR;
+		*text = "data decoding error";
+	}
+
+	if ( rc == LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "slap_parse_rbac_check_access: "
+				"SUCCESS\n" );
+		*reqpp = reqp;
+	} else {
+		Debug( LDAP_DEBUG_ANY, "slap_parse_rbac_check_access: "
+				"FAIL\n" );
+		rbac_free_req( reqp );
+	}
+
+	if ( !BER_BVISNULL( &reqdata ) ) {
+		ber_memfree_x( reqdata.bv_val, ctx );
+	}
+
+	return rc;
+}
+
+// checkAcess F  (ALL)
+static int
+rbac_check_access( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_session_t *sessp = NULL;
+	rbac_permission_t *permp = NULL;
+	rbac_constraint_t *cp = NULL;
+	rbac_req_t *reqp = NULL;
+	const struct berval rbac_op = BER_BVC("CheckAccess");
+	int rc = LDAP_SUCCESS;
+	int found = 0;
+
+	rs->sr_err = slap_parse_rbac_check_access(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	BER_BVZERO( &op->o_req_dn );
+	BER_BVZERO( &op->o_req_ndn );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* read the permission using objectName and OpName */
+	permp = rbac_read_permission( op, reqp );
+	if ( !permp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"permission not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	// Convert the user-role constraint data from BerVarray to rbac_constraint_t format
+	cp = rbac_user_role_constraints( sessp->role_constraints );
+
+	// Now do the actual rbac checkAccess:
+	rc = rbac_check_session_permission( sessp, permp, cp );
+
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_user_permission: "
+				"failed\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+done:
+
+	rs->sr_err = rc;
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CHECK_ACCESS.bv_val );
+
+	/* generate audit log */
+	rbac_audit( op, CheckAccess, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+
+	rbac_free_permission( permp );
+	rbac_free_req( reqp );
+	rbac_free_session( sessp );
+	rbac_free_constraints( cp );
+
+	return rs->sr_err;
+}
+
+// checkAcess A loop back
+static int
+rbac_check_accessA( Operation *op, SlapReply *rs )
+{
+	int rc = LDAP_SUCCESS;
+
+	//rs->sr_err = slap_parse_rbac_check_access(op->ore_reqdata,
+	//	&reqp, &rs->sr_text, NULL);
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CHECK_ACCESS.bv_val );
+	rs->sr_err = rc;
+
+	return rc;
+}
+
+// checkAcess B parse
+static int
+rbac_check_accessB( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_req_t *reqp = NULL;
+	const struct berval rbac_op = BER_BVC("CheckAccess");
+	int rc = LDAP_SUCCESS;
+
+	Debug( LDAP_DEBUG_ANY, "rbac_check_access\n" );
+
+	rs->sr_err = slap_parse_rbac_check_access(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	BER_BVZERO( &op->o_req_dn );
+	BER_BVZERO( &op->o_req_ndn );
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CHECK_ACCESS.bv_val );
+	rs->sr_err = rc;
+
+	rbac_free_req( reqp );
+
+	return rc;
+}
+
+// checkAcess C - parse request & read session record
+static int
+rbac_check_accessC( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_session_t *sessp = NULL;
+	rbac_req_t *reqp = NULL;
+	const struct berval rbac_op = BER_BVC("CheckAccess");
+	int rc = LDAP_SUCCESS;
+
+	Debug( LDAP_DEBUG_ANY, "rbac_check_access\n" );
+
+	rs->sr_err = slap_parse_rbac_check_access(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	BER_BVZERO( &op->o_req_dn );
+	BER_BVZERO( &op->o_req_ndn );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+done:
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CHECK_ACCESS.bv_val );
+	rs->sr_err = rc;
+
+	rbac_free_req( reqp );
+	rbac_free_session( sessp );
+	return rc;
+}
+
+// checkAcess D, parse, read perm
+static int
+rbac_check_accessD( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_permission_t *permp = NULL;
+	rbac_req_t *reqp = NULL;
+	const struct berval rbac_op = BER_BVC("CheckAccess");
+	int rc = LDAP_SUCCESS;
+
+	Debug( LDAP_DEBUG_ANY, "rbac_check_access\n" );
+
+	rs->sr_err = slap_parse_rbac_check_access(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	BER_BVZERO( &op->o_req_dn );
+	BER_BVZERO( &op->o_req_ndn );
+
+	/* get the session using the session id */
+	/*
+	sessp = rbac_session_byid(op, reqp);
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+*/
+
+	/* read the permission using objectName and OpName */
+	permp = rbac_read_permission( op, reqp );
+	if ( !permp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"permission not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+done:
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CHECK_ACCESS.bv_val );
+	rs->sr_err = rc;
+
+	rbac_free_permission( permp );
+	rbac_free_req( reqp );
+
+	return rc;
+}
+
+// checkAcess E everything but the audit insert
+static int
+rbac_check_accessE( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_session_t *sessp = NULL;
+	rbac_permission_t *permp = NULL;
+	rbac_constraint_t *cp = NULL;
+	rbac_req_t *reqp = NULL;
+	const struct berval rbac_op = BER_BVC("CheckAccess");
+	int rc = LDAP_SUCCESS;
+
+	Debug( LDAP_DEBUG_ANY, "rbac_check_access\n" );
+
+	rs->sr_err = slap_parse_rbac_check_access(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	BER_BVZERO( &op->o_req_dn );
+	BER_BVZERO( &op->o_req_ndn );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* read the permission using objectName and OpName */
+	permp = rbac_read_permission( op, reqp );
+	if ( !permp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_access: "
+				"permission not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	// Convert the user-role constraint data from BerVarray to rbac_constraint_t format
+	cp = rbac_user_role_constraints( sessp->role_constraints );
+
+	// Now do the actual rbac checkAccess:
+	rc = rbac_check_session_permission( sessp, permp, cp );
+
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_check_user_permission: "
+				"failed\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+done:
+
+	rs->sr_err = rc;
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_CHECK_ACCESS.bv_val );
+
+	/* generate audit log */
+	//rbac_audit(op, CheckAccess, sessp, reqp, rs->sr_err,
+	//	(char *) rs->sr_text);
+
+	rbac_free_permission( permp );
+	rbac_free_req( reqp );
+	rbac_free_session( sessp );
+	rbac_free_constraints( cp );
+
+	return rs->sr_err;
+}
+
+/* check whether role exists and role assigned to the user */
+static int
+rbac_check_user_role(
+		rbac_req_t *reqp,
+		rbac_session_t *sessp,
+		rbac_user_t *userp )
+{
+	int rc = 0;
+	int i;
+
+	//assert(!BER_BVISEMPTY(&reqp->roles[0]));
+	assert( !BER_BVISEMPTY( &reqp->role ) );
+
+	for ( i = 0; !BER_BVISNULL( &userp->roles[i] ); i++ ) {
+		//if (!ber_bvstrcasecmp(&userp->roles[i], &reqp->roles[0])) {
+		if ( !ber_bvstrcasecmp( &userp->roles[i], &reqp->role ) ) {
+			rc = 1; /* found the match */
+			goto done;
+		}
+	}
+
+done:;
+
+	return rc;
+}
+
+/* check whether role exists and role assigned to the session */
+static int
+rbac_check_session_role( rbac_req_t *reqp, rbac_session_t *sessp )
+{
+	int rc = 0;
+	int i;
+
+	for ( i = 0; !BER_BVISNULL( &sessp->roles[i] ); i++ ) {
+		//if (!ber_bvstrcasecmp(&sessp->roles[i], &reqp->roles[0])) {
+		if ( !ber_bvstrcasecmp( &sessp->roles[i], &reqp->role ) ) {
+			rc = 1; /* found the match */
+			goto done;
+		}
+	}
+
+done:;
+
+	return rc;
+}
+
+/* make sure user is the owner of the session */
+static int
+rbac_check_user_session( rbac_session_t *sessp, rbac_req_t *reqp )
+{
+	int rc = 0;
+
+	if ( BER_BVISNULL( &sessp->uid ) || BER_BVISNULL( &reqp->uid ) ||
+			sessp->uid.bv_len != reqp->uid.bv_len ) {
+		goto done;
+	}
+
+	if ( !strncasecmp(
+				sessp->uid.bv_val, reqp->uid.bv_val, reqp->uid.bv_len ) ) {
+		rc = 1;
+		goto done;
+	}
+
+done:;
+
+	return rc;
+}
+
+/*
+ * slap_parse_rbac_active_role
+ */
+static int
+slap_parse_rbac_active_role(
+		struct berval *in,
+		int add_or_drop_role,
+		rbac_req_t **reqpp,
+		const char **text,
+		void *ctx )
+{
+	int rc = LDAP_SUCCESS;
+	struct berval reqdata = BER_BVNULL;
+	rbac_req_t *reqp = NULL;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_tag_t tag;
+	ber_len_t len = -1;
+
+	*text = NULL;
+
+	if ( in == NULL || in->bv_len == 0 ) {
+		*text = "empty request data field in rbac_create_session exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	reqp = rbac_alloc_req( add_or_drop_role );
+
+	if ( !reqp ) {
+		*text = "unable to allocate memory for rbac_add_drop_active_role exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	ber_dupbv_x( &reqdata, in, ctx );
+
+	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+	ber_init2( ber, &reqdata, 0 );
+
+	tag = ber_scanf( ber, "{" /*}*/ );
+
+	if ( tag == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_active_role: "
+				"decoding error.\n" );
+		goto decoding_error;
+	}
+
+	tag = ber_peek_tag( ber, &len );
+	//if ( tag == LDAP_TAG_EXOP_RBAC_USER_ID ) {
+	if ( tag == LDAP_TAG_EXOP_RBAC_USER_ID_SESS ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_active_role: "
+					"user id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv( &reqp->uid, &bv );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag == LDAP_TAG_EXOP_RBAC_SESSION_ID_SESS ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_active_role: "
+					"session id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv( &reqp->sessid, &bv );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag == LDAP_TAG_EXOP_RBAC_ROLE_NM_SESS ) {
+		struct berval bv;
+		tag = ber_scanf( ber, "m", &bv );
+		//tag = ber_scanf( ber, "W", &reqp->roles);
+		//tag = ber_scanf( ber, "m", &reqp->roles);
+		//tag = ber_scanf( ber, "m", &reqp->roles[0]);
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+					"role parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv( &reqp->role, &bv );
+		//ber_dupbv(&reqp->roles[0], &bv);
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag != LBER_DEFAULT || len != 0 ) {
+decoding_error:;
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_create_session: "
+				"decoding error, len=%ld\n",
+				(long)len );
+		rc = LDAP_PROTOCOL_ERROR;
+		*text = "data decoding error";
+	}
+
+	if ( rc == LDAP_SUCCESS ) {
+		*reqpp = reqp;
+	} else {
+		rbac_free_req( reqp );
+		*reqpp = NULL;
+	}
+
+	if ( !BER_BVISNULL( &reqdata ) ) {
+		ber_memfree_x( reqdata.bv_val, ctx );
+	}
+
+	return rc;
+}
+
+static int
+rbac_add_active_role( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	struct berval rbac_op = BER_BVC("AddActiveRole");
+	rbac_req_t *reqp = NULL;
+	rbac_user_t *userp = NULL;
+	rbac_session_t *sessp;
+	int rc = LDAP_SUCCESS;
+
+	rs->sr_err = slap_parse_rbac_active_role( op->ore_reqdata,
+			RBAC_REQ_ADD_ACTIVE_ROLE, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+				"session not found\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text = "rbac_add_active_role: session not found";
+		goto done;
+	}
+
+	/* read user entry */
+	userp = rbac_read_user( op, reqp );
+	if ( !userp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+				"unable to read user entry\n" );
+		rs->sr_err = LDAP_NO_SUCH_OBJECT;
+		rs->sr_text = "rbac_add_active_role: unable to read user entry";
+		goto done;
+	}
+
+	/* make sure role exists and role assigned to the user */
+	if ( !rbac_check_user_role( reqp, sessp, userp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+				"role not assigned to the user\n" );
+		rs->sr_err = LDAP_NO_SUCH_OBJECT;
+		rs->sr_text = "rbac_add_active_role: role not assigned to the user";
+		goto done;
+	}
+
+	/* make sure user is the owner of the session */
+	if ( !rbac_check_user_session( sessp, reqp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+				"user not owner of session\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text = "rbac_add_active_role: user not owner of the session";
+		goto done;
+	}
+
+	/* add the role to the session */
+	rc = rbac_session_add_role( op, sessp, reqp );
+	if ( rc != LDAP_SUCCESS ) {
+		rs->sr_err = rc;
+		if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
+			rs->sr_text =
+					"rbac_add_active_role: role already activated in session";
+			Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+					"role already activated in session\n" );
+		} else {
+			rs->sr_text = "rbac_add_active_role: unable to add role to session";
+			Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+					"unable to add role to session\n" );
+		}
+		goto done;
+	}
+
+done:
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_ADD_ACTIVE_ROLE.bv_val );
+
+	/* generate audit log */
+	rbac_audit(
+			op, AddActiveRole, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+
+	rbac_free_session( sessp );
+	rbac_free_user( userp );
+	rbac_free_req( reqp );
+
+	return rs->sr_err;
+}
+
+static int
+rbac_drop_active_role( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	const struct berval rbac_op = BER_BVC("DropActiveRole");
+	rbac_session_t *sessp;
+	rbac_req_t *reqp = NULL;
+	int rc = LDAP_SUCCESS;
+
+	rs->sr_err = slap_parse_rbac_active_role( op->ore_reqdata,
+			RBAC_REQ_DROP_ACTIVE_ROLE, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_drop_active_role: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	if ( BER_BVISNULL( &reqp->role ) || !sessp->roles ||
+			BER_BVISNULL( &sessp->roles[0] ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_drop_active_role: "
+				"unavailable role\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* make sure role exists and role assigned to the user */
+	if ( !rbac_check_session_role( reqp, sessp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_drop_active_role: "
+				"role not assigned to session\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* make sure user is the owner of the session */
+	if ( !rbac_check_user_session( sessp, reqp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_drop_active_role: "
+				"user not owner of session\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text = "rbac_drop_active_role: user not owner of the session";
+		goto done;
+	}
+
+	/* drop the role to the session */
+	rc = rbac_session_drop_role( op, sessp, reqp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_drop_active_role: "
+				"unable to drop active role from session\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		rs->sr_text = "rbac_drop_active_role: unable to drop role from session";
+		goto done;
+	}
+
+done:
+	rs->sr_err = rc;
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_DROP_ACTIVE_ROLE.bv_val );
+
+	/* generate audit log */
+	rbac_audit(
+			op, DropActiveRole, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+
+	rbac_free_session( sessp );
+	rbac_free_req( reqp );
+
+	return rs->sr_err;
+}
+
+/*
+ * slap_parse_rbac_delete_session
+ */
+static int
+slap_parse_rbac_delete_session(
+		struct berval *in,
+		rbac_req_t **reqpp,
+		const char **text,
+		void *ctx )
+{
+	int rc = LDAP_SUCCESS;
+	struct berval reqdata = BER_BVNULL;
+	rbac_req_t *reqp = NULL;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	ber_tag_t tag;
+	ber_len_t len = -1;
+
+	*text = NULL;
+
+	if ( in == NULL || in->bv_len == 0 ) {
+		*text = "empty request data field in rbac_delete_session exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	reqp = rbac_alloc_req( RBAC_REQ_DELETE_SESSION );
+
+	if ( !reqp ) {
+		*text = "unable to allocate memory for rbac_delete_session exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	ber_dupbv_x( &reqdata, in, ctx );
+
+	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+	ber_init2( ber, &reqdata, 0 );
+
+	tag = ber_scanf( ber, "{" /*}*/ );
+
+	if ( tag == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_delete_session: "
+				"decoding error.\n" );
+		goto decoding_error;
+	}
+
+	tag = ber_peek_tag( ber, &len );
+	if ( tag == LDAP_TAG_EXOP_RBAC_USER_ID_SESS ) {
+		struct berval uid;
+		tag = ber_scanf( ber, "m", &uid );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_delete_session: "
+					"user id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->uid, &uid, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	//tag = ber_peek_tag( ber, &len );
+	if ( tag == LDAP_TAG_EXOP_RBAC_SESSION_ID_SESS ) {
+		struct berval sessid;
+		tag = ber_scanf( ber, "m", &sessid );
+		if ( tag == LBER_ERROR ) {
+			Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_delete_session: "
+					"session id parse failed.\n" );
+			goto decoding_error;
+		}
+		ber_dupbv_x( &reqp->sessid, &sessid, ctx );
+		tag = ber_peek_tag( ber, &len );
+	}
+
+	if ( tag != LBER_DEFAULT || len != 0 ) {
+decoding_error:;
+
+		Debug( LDAP_DEBUG_TRACE, "slap_parse_rbac_delete_session: "
+				"decoding error, len=%ld\n",
+				(long)len );
+		rc = LDAP_PROTOCOL_ERROR;
+		*text = "data decoding error";
+	}
+
+	if ( rc == LDAP_SUCCESS ) {
+		*reqpp = reqp;
+	} else {
+		rbac_free_req( reqp );
+		*reqpp = NULL;
+	}
+
+	if ( !BER_BVISNULL( &reqdata ) ) {
+		ber_memfree_x( reqdata.bv_val, ctx );
+	}
+
+	return rc;
+}
+
+static int
+rbac_delete_session( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	const struct berval rbac_op = BER_BVC("DeleteSession");
+	rbac_session_t *sessp = NULL;
+	rbac_req_t *reqp = NULL;
+	int rc;
+
+	rs->sr_err = slap_parse_rbac_delete_session(
+			op->ore_reqdata, &reqp, &rs->sr_text, NULL );
+
+	assert( rs->sr_err == LDAP_SUCCESS );
+
+	/* get the session using the session id */
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_delete_session: "
+				"session not found\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* checking whether the session is owned by the user */
+	if ( !rbac_is_session_owner( sessp, reqp ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_delete_session: "
+				"session not owned by user\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	rc = rbac_int_delete_session( op, sessp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_int_delete_session: "
+				"unable to delete session\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+done:;
+
+	rs->sr_err = rc;
+
+	// always put the OID in the response:
+	rs->sr_rspoid = ch_strdup( slap_EXOP_DELETE_SESSION.bv_val );
+
+	/* generate audit log */
+	rbac_audit(
+			op, DeleteSession, sessp, reqp, rs->sr_err, (char *)rs->sr_text );
+
+	rbac_free_session( sessp );
+	rbac_free_req( reqp );
+
+	return rs->sr_err;
+}
+
+/* returns the permissions associated with a session */
+static int
+rbac_session_permissions( Operation *op, SlapReply *rs, rbac_req_t *reqp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	const struct berval rbac_op = BER_BVC("SessionPermissions");
+	rbac_session_t *sessp;
+
+	sessp = rbac_session_byid( op, reqp );
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_permissions: "
+				"session id not found\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	rs->sr_err = rbac_int_session_permissions( op, rs, reqp, sessp );
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_permissions: "
+				"permissions not found\n" );
+		goto done;
+	}
+
+done:;
+	return rs->sr_err;
+}
+
+/* extract session permission info from op */
+int
+rbac_search_parse_session_permissions_req(
+		Operation *op,
+		rbac_req_t **reqpp,
+		const char **text,
+		void *ctx )
+{
+	int rc = LDAP_SUCCESS;
+	struct berval *sessid = NULL;
+	rbac_req_t *reqp = NULL;
+	*text = NULL;
+	struct berval rbac_session_id = BER_BVC("sessionID");
+	struct berval rbac_session_permissions_attr =
+			BER_BVC("sessionPermissions");
+	AttributeDescription *ad = NULL;
+	Filter *f;
+
+	/* check simple assertion (sessionID=<session id>) */
+	f = op->ors_filter;
+	ad = f->f_ava->aa_desc;
+	if ( !ad || ber_bvstrcasecmp( &rbac_session_id, &ad->ad_cname ) ) {
+		goto done;
+	}
+	sessid = &f->f_ava->aa_value;
+
+	if ( !rbac_is_valid_session_id( sessid ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_search_parse_session_permissions_req: "
+				"invalid session id\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* check requested attr */
+
+	if ( !op->oq_search.rs_attrs ||
+			BER_BVISNULL( &op->oq_search.rs_attrs[0].an_name ) ||
+			ber_bvstrcasecmp( &op->oq_search.rs_attrs[0].an_name,
+					&rbac_session_permissions_attr ) ||
+			!BER_BVISNULL( &op->oq_search.rs_attrs[1].an_name ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_search_parse_session_permissions_req: "
+				"only sessionPermissions allowed\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	reqp = rbac_alloc_req( RBAC_REQ_SESSION_PERMISSIONS );
+	if ( !reqp ) {
+		*text = "unable to allocate memory for rbac_session_permissions req";
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* retrieve session id from search filter */
+	ber_dupbv_x( &reqp->sessid, sessid, ctx );
+
+done:;
+
+	if ( rc == LDAP_SUCCESS ) {
+		*reqpp = reqp;
+	} else {
+		rbac_free_req( reqp );
+		*reqpp = NULL;
+	}
+
+	return rc;
+}
+
+static int
+rbac_search( Operation *op, SlapReply *rs )
+{
+	Debug( LDAP_DEBUG_ANY, "rbac_search entry\n" );
+
+	return SLAP_CB_CONTINUE;
+}
+
+/*
+static int
+rbac_search( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_req_t *reqp = NULL;
+	int rc = SLAP_CB_CONTINUE;
+
+	 only session_permissions is implemented for now
+	rc = rbac_search_parse_session_permissions_req(
+			op, &reqp, &rs->sr_text, NULL );
+	if ( !reqp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_search: "
+				"invalid search for session permissions\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	rc = rbac_session_permissions( op, rs, reqp );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_search: "
+				"session permissions failed\n" );
+		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	rs->sr_err = LDAP_SUCCESS;
+
+done:;
+	send_ldap_result( op, rs );
+
+	return rc;
+}
+*/
+
+static struct exop {
+	struct berval oid;
+	BI_op_extended *extended;
+} rbac_exop_table[] = {
+	{ BER_BVC(LDAP_RBAC_EXOP_CREATE_SESSION), rbac_create_session },
+	{ BER_BVC(LDAP_RBAC_EXOP_CHECK_ACCESS), rbac_check_access },
+	{ BER_BVC(LDAP_RBAC_EXOP_ADD_ACTIVE_ROLE), rbac_add_active_role },
+	{ BER_BVC(LDAP_RBAC_EXOP_DROP_ACTIVE_ROLE), rbac_drop_active_role },
+	{ BER_BVC(LDAP_RBAC_EXOP_DELETE_SESSION), rbac_delete_session },
+	{ BER_BVC(LDAP_RBAC_EXOP_SESSION_ROLES), rbac_session_roles },
+
+	{ BER_BVNULL, NULL }
+};
+
+static int
+rbac_add( Operation *op, SlapReply *rs )
+{
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rbac_bind( Operation *op, SlapReply *rs )
+{
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rbac_compare( Operation *op, SlapReply *rs )
+{
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rbac_delete( Operation *op, SlapReply *rs )
+{
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rbac_modify( Operation *op, SlapReply *rs )
+{
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rbac_extended( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	int rc = SLAP_CB_CONTINUE;
+	int i;
+
+	for ( i = 0; rbac_exop_table[i].extended != NULL; i++ ) {
+		if ( bvmatch( &rbac_exop_table[i].oid, &op->oq_extended.rs_reqoid ) ) {
+			rc = rbac_exop_table[i].extended( op, rs );
+			switch ( rc ) {
+				case LDAP_SUCCESS:
+					break;
+				case SLAP_CB_CONTINUE:
+				case SLAPD_ABANDON:
+					return rc;
+				default:
+					send_ldap_result( op, rs );
+					return rc;
+			}
+			break;
+		}
+	}
+
+	return rc;
+}
+
+static int
+rbac_db_init( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+
+	return 0;
+}
+
+static int
+rbac_db_open( BackendDB *be, ConfigReply *cr )
+{
+	int rc = LDAP_SUCCESS;
+
+	rc = rbac_initialize_tenants( be, cr );
+
+	return rc;
+}
+
+static int
+rbac_db_close( BackendDB *be, ConfigReply *cr )
+{
+	return 0;
+}
+
+int
+rbac_initialize()
+{
+	int rc;
+
+	rc = load_extop2( (struct berval *)&slap_EXOP_CREATE_SESSION,
+			SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, rbac_create_session, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+				"unable to register rbac_create_session exop: %d\n",
+				rc );
+		return rc;
+	}
+
+	rc = load_extop2( (struct berval *)&slap_EXOP_CHECK_ACCESS,
+			SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, rbac_check_access, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+				"unable to register rbac_check_access exop: %d\n",
+				rc );
+		return rc;
+	}
+
+	rc = load_extop2( (struct berval *)&slap_EXOP_ADD_ACTIVE_ROLE,
+			SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, rbac_add_active_role, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+				"unable to register rbac_add_active_role exop: %d\n",
+				rc );
+		return rc;
+	}
+
+	rc = load_extop2( (struct berval *)&slap_EXOP_DROP_ACTIVE_ROLE,
+			SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, rbac_drop_active_role, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+				"unable to register rbac_drop_active_role exop: %d\n",
+				rc );
+		return rc;
+	}
+
+	rc = load_extop2( (struct berval *)&slap_EXOP_DELETE_SESSION,
+			SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, rbac_delete_session, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+				"unable to register rbac_delete_session exop: %d\n",
+				rc );
+		return rc;
+	}
+
+	rc = load_extop2( (struct berval *)&slap_EXOP_SESSION_ROLES,
+			SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, rbac_session_roles, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_initialize: "
+				"unable to register rbac_session_roles exop: %d\n",
+				rc );
+		return rc;
+	}
+
+	rbac.on_bi.bi_type = "rbac";
+	rbac.on_bi.bi_db_init = rbac_db_init;
+	rbac.on_bi.bi_db_open = rbac_db_open;
+	rbac.on_bi.bi_db_close = rbac_db_close;
+
+	rbac.on_bi.bi_op_add = rbac_add;
+	rbac.on_bi.bi_op_bind = rbac_bind;
+	rbac.on_bi.bi_op_compare = rbac_compare;
+	rbac.on_bi.bi_op_delete = rbac_delete;
+	rbac.on_bi.bi_op_modify = rbac_modify;
+	rbac.on_bi.bi_op_search = rbac_search;
+	rbac.on_bi.bi_extended = rbac_extended;
+	rbac.on_bi.bi_cf_ocs = rbac_ocs;
+
+	/*	rbac.on_bi.bi_connection_destroy = rbac_connection_destroy; */
+
+	rc = config_register_schema( rbaccfg, rbac_ocs );
+	if ( rc ) return rc;
+
+	rc = rbac_initialize_repository();
+	if ( rc != LDAP_SUCCESS ) {
+		return rc;
+	}
+
+	return overlay_register( &rbac );
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	return rbac_initialize();
+}
diff --git a/contrib/slapd-modules/rbac/rbac.h b/contrib/slapd-modules/rbac/rbac.h
new file mode 100644
index 0000000..4461236
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbac.h
@@ -0,0 +1,402 @@
+/* rbac.h -  */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ *
+ */
+
+#ifndef RBAC_H
+#define RBAC_H
+
+LDAP_BEGIN_DECL
+
+#include "ldap_rbac.h"
+
+#define USE_NEW_THREAD_CONTEXT 1
+#define RBAC_BUFLEN 1024
+
+/* tenant initialization op */
+#define INIT_AUDIT_CONTAINER 0x01
+#define INIT_SESSION_CONTAINER 0x02
+
+typedef struct rbac_ad {
+	int type;
+	struct berval attr;
+	AttributeDescription **ad;
+} rbac_ad_t;
+
+/* RBAC AttributeDescriptions */
+struct slap_rbac_internal_schema {
+	/* slapd schema */
+	AttributeDescription *ad_uid;
+
+	/* RBAC tenant */
+	AttributeDescription *ad_tenant_id;
+
+	/* RBAC sessions */
+	AttributeDescription *ad_session_id;
+	AttributeDescription *ad_session_user_dn;
+	AttributeDescription *ad_session_roles;
+	AttributeDescription *ad_session_role_constraints;
+
+	/* RBAC session permissions */
+	AttributeDescription *ad_permission_opname;
+	AttributeDescription *ad_permission_objname;
+	AttributeDescription *ad_permission_rolename;
+
+	/* RBAC audit */
+	AttributeDescription *ad_audit_op; /* rbac op: create_session */
+	AttributeDescription *ad_audit_id;
+	AttributeDescription *ad_audit_roles;
+	AttributeDescription *ad_audit_requested_roles;
+	AttributeDescription *ad_audit_timestamp;
+	AttributeDescription *ad_audit_resources;
+	AttributeDescription *ad_audit_objects;
+	AttributeDescription *ad_audit_operations; /* resource ops */
+	AttributeDescription *ad_audit_result;
+	AttributeDescription *ad_audit_properties;
+	AttributeDescription *ad_audit_messages;
+
+	/* RBAC session attributes */
+	AttributeName *session_attrs;
+};
+
+extern struct slap_rbac_internal_schema slap_rbac_schema;
+
+/* attributes in tenant repository */
+struct slap_rbac_tenant_schema {
+	/* user role assignments, role constraints, and user constraint */
+	AttributeDescription *ad_role;
+	AttributeDescription *ad_role_constraint;
+	AttributeDescription *ad_user_constraint;
+	AttributeDescription *ad_uid;
+
+	/* session permission */
+	AttributeDescription *ad_permission_users;
+	AttributeDescription *ad_permission_roles;
+	AttributeDescription *ad_permission_objname;
+	AttributeDescription *ad_permission_opname;
+
+	/* the list of attributes when doing searches in the jts repo */
+	AttributeName *user_attrs;
+	AttributeName *perm_attrs; /* attrs to retrieve for check access */
+	AttributeName *session_perm_attrs; /* attrs for session permissions */
+
+	/* the corresponding list of attribute description mapping */
+	rbac_ad_t *user_ads;
+	rbac_ad_t *permission_ads;
+	rbac_ad_t *session_permissions_ads;
+};
+
+extern struct slap_rbac_tenant_schema slap_rbac_jts_schema;
+
+/* types of RBAC requests */
+typedef struct rbac_request {
+	int req_type;
+	struct berval sessid;
+	struct berval tenantid;
+
+	/* session creation */
+	struct berval uid;
+	struct berval authtok;
+	BerVarray roles;
+	struct berval role;
+
+	/* check access */
+	struct berval opname;
+	struct berval objname;
+	struct berval objid;
+} rbac_req_t;
+
+typedef struct rbac_constraint {
+	struct berval name; /* user name or role name */
+	int allowed_inactivity; /* secs */
+	int begin_time; /* secs */
+	int end_time; /* secs */
+	lutil_timet begin_date;
+	lutil_timet end_date;
+	lutil_timet begin_lock_date;
+	lutil_timet end_lock_date;
+	int day_mask;
+	struct rbac_constraint *next;
+} rbac_constraint_t;
+
+/* holds RBAC info */
+typedef struct tenant_info {
+	struct berval tid; /* tenant id */
+	struct berval admin;
+	struct berval pwd;
+	struct berval users_basedn;
+	struct berval roles_basedn;
+	struct berval audit_basedn;
+	struct berval permissions_basedn;
+	struct berval sessions_basedn;
+	struct berval session_admin;
+	struct berval session_admin_pwd;
+	struct slap_rbac_tenant_schema *schema;
+} tenant_info_t;
+
+typedef struct rbac_tenant {
+	tenant_info_t tenant_info;
+	struct rbac_tenant *next;
+} rbac_tenant_t;
+
+/* for RBAC callback */
+typedef struct rbac_callback_info {
+	tenant_info_t *tenantp;
+	void *private;
+} rbac_callback_info_t;
+
+/* RBAC user */
+typedef struct rbac_user {
+	struct berval tenantid;
+	struct berval uid;
+	struct berval dn;
+	struct berval constraints;
+	struct berval password;
+	struct berval msg;
+	int authz; /* flag for bind (pwd policy) info */
+	BerVarray roles;
+	BerVarray role_constraints;
+#if 0 /* additional parameters from Fortress */
+	private String userId;
+	@XmlElement(nillable = true)
+		private char[] password;
+	@XmlElement(nillable = true)
+		private char[] newPassword;
+	private String internalId;
+	@XmlElement(nillable = true)
+		private List<UserRole> roles;
+	@XmlElement(nillable = true)
+		private List<UserAdminRole> adminRoles;
+	private String pwPolicy;
+	private String cn;
+	private String sn;
+	private String dn;
+	private String ou;
+	private String description;
+	private String beginTime;
+	private String endTime;
+	private String beginDate;
+	private String endDate;
+	private String beginLockDate;
+	private String endLockDate;
+	private String dayMask;
+	private String name;
+	private int timeout;
+	private boolean reset;
+	private boolean locked;
+	private Boolean system;
+	@XmlElement(nillable = true)
+		private Props props = new Props();
+	@XmlElement(nillable = true)
+		private Address address;
+	@XmlElement(nillable = true)
+		private List<String> phones;
+	@XmlElement(nillable = true)
+		private List<String> mobiles;
+	@XmlElement(nillable = true)
+		private List<String> emails;
+#endif /* 0 */
+} rbac_user_t;
+
+enum {
+	RBAC_NONE = 0,
+	RBAC_TENANT,
+	RBAC_TENANT_ID,
+	RBAC_USERS_BASE_DN,
+	RBAC_ROLES_BASE_DN,
+	RBAC_PERMISSIONS_BASE_DN,
+	RBAC_ADMIN_DN,
+	RBAC_ADMIN_PWD,
+	RBAC_SESSIONS_BASE_DN,
+	RBAC_SESSION_ADMIN_DN,
+	RBAC_SESSION_ADMIN_PWD,
+	RBAC_ROLE_ASSIGNMENT,
+	RBAC_ROLE_CONSTRAINTS,
+	RBAC_USER_CONSTRAINTS,
+	RBAC_UID,
+	RBAC_USERS,
+	RBAC_ROLES,
+	RBAC_OBJ_NAME,
+	RBAC_OP_NAME,
+	RBAC_ROLE_NAME,
+	RBAC_SESSION_ID,
+	RBAC_USER_DN,
+	RBAC_AUDIT_ROLES,
+	RBAC_AUDIT_RESOURCES,
+	RBAC_AUDIT_RESULT,
+	RBAC_AUDIT_TIMESTAMP,
+	RBAC_AUDIT_PROPERTIES,
+	RBAC_AUDIT_OP,
+	RBAC_AUDIT_ID,
+	RBAC_AUDIT_REQUESTED_ROLES,
+	RBAC_AUDIT_OBJS,
+	RBAC_AUDIT_OPS,
+	RBAC_AUDIT_MSGS,
+	RBAC_LAST
+};
+
+enum {
+	RBAC_DEFAULT_TENANT_ID = RBAC_LAST,
+	RBAC_DEFAULT_USERS_BASE_DN,
+	RBAC_DEFAULT_PERMISSIONS_BASE_DN,
+	RBAC_DEFAULT_ROLES_BASE_DN,
+	RBAC_DEFAULT_SESSIONS_BASE_DN,
+	RBAC_DEFAULT_AUDIT_BASE_DN
+};
+
+typedef struct rbac_user_idlist {
+	char *user_id;
+	struct rbac_user_idlist *next;
+} rbac_user_idlist_t;
+
+/* RBAC sessions */
+#define RBAC_SESSION_RDN_EQ "rbacSessid="
+#define RBAC_AUDIT_RDN_EQ "rbacAuditId="
+
+typedef struct rbac_session {
+	rbac_user_t *user;
+	struct berval tenantid;
+	struct berval sessid;
+	struct berval uid;
+	struct berval userdn;
+	char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
+	struct berval sessdn;
+	long last_access;
+	int timeout;
+	int warning_id;
+	int error_id;
+	int grace_logins;
+	int expiration_secs;
+	int is_authenticated; /* boolean */
+	struct berval message;
+	BerVarray roles;
+	BerVarray role_constraints;
+} rbac_session_t;
+
+/* RBAC roles */
+typedef struct rbac_role {
+	char *name;
+	char *description;
+	struct rbac_role *parent;
+	struct rbac_role *next;
+} rbac_role_t;
+
+typedef struct rbac_role_list {
+	char *name;
+	struct rbac_role_list *next;
+} rbac_role_list_t;
+
+/* RBAC permissions */
+typedef struct rbac_permission {
+	struct berval dn;
+	int admin; /* boolean */
+	struct berval internalId;
+	BerVarray opName;
+	BerVarray objName;
+	struct berval objectId;
+	struct berval abstractName;
+	struct berval type;
+	BerVarray roles;
+	BerVarray uids;
+	struct rbac_permission *next;
+} rbac_permission_t;
+
+/* RBAC Audit */
+typedef enum {
+	CreateSession = 0,
+	CheckAccess,
+	AddActiveRole,
+	DropActiveRole,
+	SessionPermissions,
+	DeleteSession,
+	SessionRoles
+} audit_op_t;
+
+/* function prototypes */
+
+int rbac_initialize_repository( void );
+int rbac_initialize_tenants( BackendDB *be, ConfigReply *cr );
+
+/* RBAC tenant information */
+tenant_info_t *rbac_tid2tenant( struct berval *tid );
+
+rbac_req_t *rbac_alloc_req( int type );
+void rbac_free_req( rbac_req_t *reqp );
+
+rbac_user_t *rbac_read_user( Operation *op, rbac_req_t *rabc_reqp );
+int rbac_authenticate_user( Operation *op, rbac_user_t *user );
+int rbac_user_temporal_constraint( rbac_user_t *userp );
+void rbac_free_user( rbac_user_t *user );
+
+rbac_session_t *rbac_alloc_session( void );
+int rbac_is_valid_session_id( struct berval *sessid );
+rbac_session_t *rbac_session_byid( Operation *op, rbac_req_t *reqp );
+int rbac_is_session_owner( rbac_session_t *sessp, rbac_req_t *reqp );
+int rbac_register_session( Operation *op, SlapReply *rs, rbac_session_t *sess );
+int rbac_int_delete_session( Operation *op, rbac_session_t *sessp );
+int rbac_session_add_role(
+	Operation *op,
+	rbac_session_t *sessp,
+	rbac_req_t *reqp );
+int rbac_session_drop_role(
+	Operation *op,
+	rbac_session_t *sessp,
+	rbac_req_t *reqp );
+int rbac_int_session_permissions(
+	Operation *op,
+	SlapReply *rs,
+	rbac_req_t *reqp,
+	rbac_session_t *sessp );
+int activate_session_roles(
+	rbac_session_t *sessp,
+	rbac_req_t *reqp,
+	rbac_user_t *userp );
+void rbac_free_session( rbac_session_t *sessp );
+
+rbac_constraint_t *rbac_user_role_constraints( BerVarray values );
+rbac_constraint_t *rbac_role2constraint(
+	struct berval *role,
+	rbac_constraint_t *role_constraints );
+rbac_constraint_t *rbac_bv2constraint( struct berval *bv );
+int rbac_check_time_constraint( rbac_constraint_t *cp );
+void rbac_free_constraint( rbac_constraint_t *cp );
+void rbac_free_constraints( rbac_constraint_t *constraints );
+
+rbac_permission_t *rbac_read_permission( Operation *op, rbac_req_t *rbac_reqp );
+int rbac_check_session_permission(
+	rbac_session_t *sessp,
+	rbac_permission_t *permp,
+	rbac_constraint_t *role_constraints );
+void rbac_free_permission( rbac_permission_t *permp );
+
+/* audit functions */
+void rbac_audit(
+	Operation *op,
+	audit_op_t rbac_op,
+	rbac_session_t *sessp,
+	rbac_req_t *reqp,
+	int result,
+	char *msg );
+
+/* acl functions */
+int rbac_create_session_acl_check( struct berval *sessid, rbac_user_t *userp );
+
+void rbac_to_lower( struct berval *bv );
+
+LDAP_END_DECL
+
+#endif /* RBAC_H */
diff --git a/contrib/slapd-modules/rbac/rbacacl.c b/contrib/slapd-modules/rbac/rbacacl.c
new file mode 100644
index 0000000..269dcf5
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbacacl.c
@@ -0,0 +1,37 @@
+/* rbacacl.c - RBAC ACL */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+int
+rbac_create_session_acl_check( struct berval *sessid, rbac_user_t *userp )
+{
+	int rc = LDAP_SUCCESS;
+
+	return rc;
+}
diff --git a/contrib/slapd-modules/rbac/rbacaudit.c b/contrib/slapd-modules/rbac/rbacaudit.c
new file mode 100644
index 0000000..ef04ece
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbacaudit.c
@@ -0,0 +1,233 @@
+/* rbacaudit.c - RBAC Audit */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+static struct rbac_audit_op {
+	audit_op_t op;
+	struct berval op_bv;
+} rbac_audit_ops[] = {
+	{ CreateSession, BER_BVC("CreateSession") },
+	{ CheckAccess, BER_BVC("CheckAccess") },
+	{ AddActiveRole, BER_BVC("AddActiveRole") },
+	{ DropActiveRole, BER_BVC("DropActiveRole") },
+	{ SessionPermissions, BER_BVC("SessionPermissions") },
+	{ DeleteSession, BER_BVC("DeleteSession") },
+	{ SessionRoles, BER_BVC("SessionRoles") },
+
+	{ -1, BER_BVNULL }
+};
+
+static int
+rbac_audit_fake_cb( Operation *op, SlapReply *rs )
+{
+	Debug( LDAP_DEBUG_ANY, "rbac_audit_fake_cb\n" );
+
+	return 0;
+}
+
+void
+rbac_audit(
+		Operation *op,
+		audit_op_t rbac_op,
+		rbac_session_t *sessp,
+		rbac_req_t *reqp,
+		int result,
+		char *msg )
+{
+	int op_idx, rc = LDAP_SUCCESS;
+	int found = 0;
+	struct berval timestamp;
+	tenant_info_t *tenantp = rbac_tid2tenant( &sessp->tenantid );
+	slap_callback cb = { 0 };
+	SlapReply rs2 = { REP_RESULT };
+	Entry *e = NULL;
+	struct berval auditObjectClass = BER_BVC("rbacAudit");
+	struct berval auditResultSuccess = BER_BVC("success");
+	struct berval auditResultFailed = BER_BVC("failed");
+	struct berval bv, rdn, nrdn;
+	char rdnbuf[RBAC_BUFLEN];
+	time_t now;
+	char nowstr[LDAP_LUTIL_GENTIME_BUFSIZE];
+
+	for ( op_idx = 0; rbac_audit_ops[op_idx].op != -1; op_idx++ ) {
+		if ( rbac_op == rbac_audit_ops[op_idx].op ) {
+			/* legit audit op */
+			found = 1;
+			break;
+		}
+	}
+
+	if ( !found ) goto done;
+
+	e = entry_alloc();
+
+	/* audit timestamp */
+	now = slap_get_time(); /* stored for later consideration */
+	timestamp.bv_val = nowstr;
+	timestamp.bv_len = sizeof(nowstr);
+	slap_timestamp( &now, &timestamp );
+
+	/* construct audit record DN; FIXME: random() call  */
+	sprintf( rdnbuf, "%s%d", RBAC_AUDIT_RDN_EQ, (int)op->o_tid );
+	strcat( rdnbuf, "-" );
+	strncat( rdnbuf, timestamp.bv_val, timestamp.bv_len );
+	bv.bv_val = &rdnbuf[0];
+	bv.bv_len = strlen( &rdnbuf[0] );
+
+	rc = dnPrettyNormal( NULL, &bv, &rdn, &nrdn, NULL );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_audit: "
+				"unable to normalize audit rDN (rc=%d)\n", rc );
+		goto done;
+	}
+
+	/* FIXME: audit_basedn should have been normalized */
+	build_new_dn( &e->e_name, &tenantp->audit_basedn, &rdn, NULL );
+	build_new_dn( &e->e_nname, &tenantp->audit_basedn, &nrdn, NULL );
+
+	ch_free( rdn.bv_val );
+	ch_free( nrdn.bv_val );
+
+	/* add timestamp */
+	attr_merge_one( e, slap_rbac_schema.ad_audit_timestamp, &timestamp, NULL );
+
+	/* add rbac audit objectClass */
+
+	attr_merge_one( e, slap_schema.si_ad_objectClass, &auditObjectClass, NULL );
+	attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
+			&auditObjectClass, NULL );
+
+	/* audit op */
+	attr_merge_one( e, slap_rbac_schema.ad_audit_op,
+			&rbac_audit_ops[op_idx].op_bv, NULL );
+
+	/* userid */
+	if ( sessp && !BER_BVISNULL( &sessp->uid ) ) {
+		attr_merge_one( e, slap_schema.si_ad_uid, &sessp->uid, NULL );
+	}
+
+	/* session id */
+
+	if ( sessp && !BER_BVISNULL( &sessp->sessid ) ) {
+		AttributeDescription *ad = NULL;
+		const char *text = NULL;
+		struct berval sessid = BER_BVC("rbacSessid");
+
+		rc = slap_bv2ad( &sessid, &ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+		attr_merge_one( e, ad, &sessp->sessid, NULL );
+	}
+
+	/* audit result */
+	attr_merge_one( e, slap_rbac_schema.ad_audit_result,
+			result == LDAP_SUCCESS ? &auditResultSuccess : &auditResultFailed,
+			NULL );
+
+	switch ( rbac_op ) {
+		case CreateSession:
+			/* audit roles */
+			if ( sessp && sessp->roles ) {
+				attr_merge( e, slap_rbac_schema.ad_audit_roles, sessp->roles,
+						NULL );
+			}
+			if ( reqp && reqp->roles ) {
+				attr_merge( e, slap_rbac_schema.ad_audit_requested_roles,
+						reqp->roles, NULL );
+			}
+			break;
+
+		case CheckAccess:
+			if ( sessp && sessp->roles ) {
+				attr_merge( e, slap_rbac_schema.ad_audit_roles, sessp->roles,
+						NULL );
+			}
+			if ( reqp && !BER_BVISEMPTY( &reqp->opname ) ) {
+				attr_merge_one( e, slap_rbac_schema.ad_audit_operations,
+						&reqp->opname, NULL );
+			}
+			if ( reqp && !BER_BVISEMPTY( &reqp->objname ) ) {
+				attr_merge_one( e, slap_rbac_schema.ad_audit_objects,
+						&reqp->objname, NULL );
+			}
+			break;
+
+		case AddActiveRole:
+			if ( reqp && reqp->roles ) {
+				attr_merge( e, slap_rbac_schema.ad_audit_requested_roles,
+						reqp->roles, NULL );
+			}
+			break;
+
+		case DropActiveRole:
+			/* audit roles */
+			if ( reqp && reqp->roles ) {
+				attr_merge( e, slap_rbac_schema.ad_audit_requested_roles,
+						reqp->roles, NULL );
+			}
+			break;
+
+		case SessionPermissions:
+			if ( sessp && sessp->roles ) {
+				attr_merge( e, slap_rbac_schema.ad_audit_roles, sessp->roles,
+						NULL );
+			}
+			break;
+
+		case DeleteSession:
+		case SessionRoles:
+		default:
+			break;
+	}
+
+	/* record the audit record */
+	Operation op2 = *op;
+	rbac_callback_info_t rbac_cb;
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_audit_fake_cb;
+	op2.o_callback = &cb;
+
+	op2.o_tag = LDAP_REQ_ADD;
+	op2.o_protocol = LDAP_VERSION3;
+	op2.o_req_dn = e->e_name;
+	op2.o_req_ndn = e->e_nname;
+	op2.ora_e = e;
+	op2.o_bd = select_backend( &op2.o_req_ndn, 0 );
+	op2.o_dn = op2.o_bd->be_rootdn;
+	op2.o_ndn = op2.o_bd->be_rootndn;
+
+	op2.ors_limit = NULL;
+	rc = op2.o_bd->be_add( &op2, &rs2 );
+
+done:
+	if ( e ) entry_free( e );
+
+	return;
+}
diff --git a/contrib/slapd-modules/rbac/rbacperm.c b/contrib/slapd-modules/rbac/rbacperm.c
new file mode 100644
index 0000000..e1f6d79
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbacperm.c
@@ -0,0 +1,233 @@
+/* rbacperm.c - RBAC permission */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+static int
+rbac_read_permission_cb( Operation *op, SlapReply *rs )
+{
+	rbac_callback_info_t *cbp = op->o_callback->sc_private;
+	rbac_ad_t *permission_ads;
+	rbac_permission_t *permp;
+	int i;
+
+	if ( rs->sr_type != REP_SEARCH ) return 0;
+
+	assert( cbp );
+
+	permp = ch_calloc( 1, sizeof(rbac_permission_t) );
+	permission_ads = cbp->tenantp->schema->permission_ads;
+
+	ber_dupbv( &permp->dn, &rs->sr_entry->e_name );
+	for ( i = 0; !BER_BVISNULL( &permission_ads[i].attr ); i++ ) {
+		Attribute *attr = NULL;
+		attr = attr_find( rs->sr_entry->e_attrs, *permission_ads[i].ad );
+		if ( attr != NULL ) {
+			switch ( permission_ads[i].type ) {
+				case RBAC_USERS:
+					ber_bvarray_dup_x( &permp->uids, attr->a_nvals, NULL );
+					break;
+				case RBAC_ROLES:
+					ber_bvarray_dup_x( &permp->roles, attr->a_nvals, NULL );
+					break;
+				default:
+					break;
+			}
+		}
+	}
+
+	cbp->private = (void *)permp;
+
+	return 0;
+}
+
+/*
+ * check whether roles assigned to a user allows access to roles in
+ * a permission, subject to role constraints
+ */
+int
+rbac_check_session_permission(
+		rbac_session_t *sessp,
+		rbac_permission_t *permp,
+		rbac_constraint_t *role_constraints )
+{
+	int rc = LDAP_INSUFFICIENT_ACCESS;
+	rbac_constraint_t *cp = NULL;
+	int i, j;
+
+	if ( !sessp->roles || !permp->roles ) goto done;
+
+	for ( i = 0; !BER_BVISNULL( &sessp->roles[i] ); i++ ) {
+		for ( j = 0; !BER_BVISNULL( &permp->roles[j] ); j++ ) {
+			if ( ber_bvstrcasecmp( &sessp->roles[i], &permp->roles[j] ) == 0 ) {
+				/* role temporal constraint */
+				cp = rbac_role2constraint( &permp->roles[j], role_constraints );
+				if ( !cp || rbac_check_time_constraint( cp ) == LDAP_SUCCESS ) {
+					rc = LDAP_SUCCESS;
+					goto done;
+				}
+			}
+		}
+	}
+done:;
+	return rc;
+}
+
+rbac_permission_t *
+rbac_read_permission( Operation *op, rbac_req_t *reqp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_callback_info_t rbac_cb;
+	int rc = LDAP_SUCCESS;
+	char fbuf[1024];
+	struct berval filter = { sizeof(fbuf), fbuf };
+	char permbuf[1024];
+	struct berval permdn = { sizeof(permbuf), permbuf };
+	struct berval permndn = BER_BVNULL;
+	char pcls[] = "(objectClass=ftOperation)";
+	SlapReply rs2 = { REP_RESULT };
+	slap_callback cb = { 0 };
+	tenant_info_t *tenantp = rbac_tid2tenant( &reqp->tenantid );
+
+#if 0 /* check valid object name and op name */
+	if ( !is_valid_opname( &reqp->opname ) ||
+			!is_valid_objname( &reqp->objname ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
+				"invalid opname (%s) or objname (%s)\n",
+				reqp->opname.bv_val, reqp->objname.bv_val );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+#endif
+
+	if ( !tenantp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
+				"missing tenant information\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	if ( reqp->objid.bv_val != NULL ) {
+		permdn.bv_len = snprintf( permdn.bv_val, permdn.bv_len,
+				"ftObjId=%s+ftOpNm=%s,ftObjNm=%s,%s", reqp->objid.bv_val,
+				reqp->opname.bv_val, reqp->objname.bv_val,
+				tenantp->permissions_basedn.bv_val );
+	} else {
+		permdn.bv_len = snprintf( permdn.bv_val, permdn.bv_len,
+				"ftOpNm=%s,ftObjNm=%s,%s", reqp->opname.bv_val,
+				reqp->objname.bv_val, tenantp->permissions_basedn.bv_val );
+	}
+
+	rc = dnNormalize( 0, NULL, NULL, &permdn, &permndn, NULL );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
+				"unable to normalize permission DN\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	filter.bv_val = pcls;
+	filter.bv_len = strlen( pcls );
+	rbac_cb.tenantp = tenantp;
+	rbac_cb.private = NULL;
+
+	Operation op2 = *op;
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_read_permission_cb;
+	op2.o_callback = &cb;
+	op2.o_tag = LDAP_REQ_SEARCH;
+	op2.o_dn = tenantp->admin;
+	op2.o_ndn = tenantp->admin;
+	op2.o_req_dn = permdn;
+	op2.o_req_ndn = permndn;
+	op2.ors_filterstr = filter;
+	op2.ors_filter = str2filter_x( &op2, filter.bv_val );
+	op2.ors_scope = LDAP_SCOPE_BASE;
+	op2.ors_attrs = tenantp->schema->perm_attrs;
+	op2.ors_tlimit = SLAP_NO_LIMIT;
+	op2.ors_slimit = SLAP_NO_LIMIT;
+	op2.ors_attrsonly = 0;
+	op2.ors_limit = NULL;
+	op2.o_bd = frontendDB;
+	rc = op2.o_bd->be_search( &op2, &rs2 );
+	filter_free_x( &op2, op2.ors_filter, 1 );
+
+done:;
+	ch_free( permndn.bv_val );
+
+	if ( rc != LDAP_SUCCESS ) {
+		rbac_free_permission((rbac_permission_t *)rbac_cb.private);
+	}
+
+	return (rbac_permission_t *)rbac_cb.private;
+}
+
+void
+rbac_free_permission( rbac_permission_t *permp )
+{
+	if ( !permp ) return;
+
+	if ( !BER_BVISNULL( &permp->dn ) ) {
+		ber_memfree( permp->dn.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &permp->internalId ) ) {
+		ber_memfree( permp->internalId.bv_val );
+	}
+
+	if ( permp->opName ) {
+		ber_bvarray_free( permp->opName );
+	}
+
+	if ( permp->objName ) {
+		ber_bvarray_free( permp->objName );
+	}
+
+	if ( !BER_BVISNULL( &permp->objectId ) ) {
+		ber_memfree( permp->objectId.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &permp->abstractName ) ) {
+		ber_memfree( permp->abstractName.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &permp->type ) ) {
+		ber_memfree( permp->type.bv_val );
+	}
+
+	if ( permp->roles ) {
+		ber_bvarray_free( permp->roles );
+	}
+
+	if ( permp->uids ) {
+		ber_bvarray_free( permp->uids );
+	}
+	ch_free( permp );
+
+	return;
+}
diff --git a/contrib/slapd-modules/rbac/rbacreq.c b/contrib/slapd-modules/rbac/rbacreq.c
new file mode 100644
index 0000000..9942a00
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbacreq.c
@@ -0,0 +1,89 @@
+/* rbacreq.c - RBAC requests */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+rbac_req_t *
+rbac_alloc_req( int type )
+{
+	rbac_req_t *reqp = NULL;
+
+	reqp = ch_calloc( 1, sizeof(rbac_req_t) );
+
+	reqp->req_type = type;
+	BER_BVZERO( &reqp->sessid );
+	BER_BVZERO( &reqp->tenantid );
+	/* session creation */
+	BER_BVZERO( &reqp->uid );
+	BER_BVZERO( &reqp->authtok );
+	reqp->roles = NULL;
+	/* check access  */
+	BER_BVZERO( &reqp->opname );
+	BER_BVZERO( &reqp->objname );
+	BER_BVZERO( &reqp->objid );
+	/* add/drop role */
+	BER_BVZERO( &reqp->role );
+
+	return reqp;
+}
+
+void
+rbac_free_req( rbac_req_t *reqp )
+{
+	if ( !reqp ) return;
+
+	if ( !BER_BVISNULL( &reqp->sessid ) )
+		ber_memfree( reqp->sessid.bv_val );
+
+	if ( !BER_BVISNULL( &reqp->tenantid ) )
+		ber_memfree( reqp->tenantid.bv_val );
+
+	/* session creation */
+	if ( !BER_BVISNULL( &reqp->uid ) )
+		ber_memfree( reqp->uid.bv_val );
+
+	if ( !BER_BVISNULL( &reqp->authtok ) )
+		ber_memfree( reqp->authtok.bv_val );
+
+	if ( reqp->roles )
+		ber_bvarray_free( reqp->roles );
+
+	/* check access  */
+	if ( !BER_BVISNULL( &reqp->opname ) )
+		ber_memfree( reqp->opname.bv_val );
+
+	if ( !BER_BVISNULL( &reqp->objname ) )
+		ber_memfree( reqp->objname.bv_val );
+
+	if ( !BER_BVISNULL( &reqp->objid ) )
+		ber_memfree( reqp->objid.bv_val );
+
+	ch_free( reqp );
+
+	return;
+}
diff --git a/contrib/slapd-modules/rbac/rbacsess.c b/contrib/slapd-modules/rbac/rbacsess.c
new file mode 100644
index 0000000..d18e312
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbacsess.c
@@ -0,0 +1,999 @@
+/* rbacsess.c - RBAC session */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+static slap_callback nullsc = { NULL, NULL, NULL, NULL };
+
+extern rbac_ad_t rbac_session_permission_ads[];
+extern rbac_ad_t rbac_session_ads[];
+
+struct berval slapo_session_oc = BER_BVC("rbacSession");
+
+typedef struct session_perm_req {
+	Operation *op;
+	SlapReply *rs;
+	struct berval *sessid;
+	struct berval permdn;
+	tenant_info_t *tenantp;
+} session_perm_req_t;
+
+static int
+rbac_sess_fake_cb( Operation *op, SlapReply *rs )
+{
+	Debug( LDAP_DEBUG_ANY, "rbac_sess_fake_cb\n" );
+
+	return 0;
+}
+
+static int
+rbac_send_session_permission(
+		session_perm_req_t *sess_perm_reqp,
+		rbac_permission_t *perm )
+{
+	int i, rc = LDAP_SUCCESS;
+	Operation *op = sess_perm_reqp->op;
+	SlapReply *rs = sess_perm_reqp->rs;
+	struct berval *sessidp = sess_perm_reqp->sessid;
+	struct berval *permdnp = &sess_perm_reqp->permdn;
+
+	Entry *e = entry_alloc();
+	e->e_attrs = NULL;
+	ber_dupbv( &e->e_name, permdnp );
+	ber_dupbv( &e->e_nname, permdnp );
+	e->e_private = NULL;
+	attr_merge_one( e, slap_rbac_schema.ad_session_id, sessidp, NULL );
+
+	for ( i = 0; !BER_BVISNULL( &rbac_session_permission_ads[i].attr ); i++ ) {
+		switch ( rbac_session_permission_ads[i].type ) {
+			case RBAC_OP_NAME:
+				attr_merge_one( e, *rbac_session_permission_ads[i].ad,
+						&perm->opName[0], NULL );
+				break;
+			case RBAC_OBJ_NAME:
+				attr_merge_one( e, *rbac_session_permission_ads[i].ad,
+						&perm->objName[0], NULL );
+				break;
+			case RBAC_ROLE_NAME:
+				attr_merge( e, *rbac_session_permission_ads[i].ad, perm->roles,
+						NULL );
+				break;
+			default:
+				break;
+		}
+	}
+
+	rs->sr_entry = e;
+	rs->sr_flags = REP_ENTRY_MUSTRELEASE;
+	rc = send_search_entry( op, rs );
+
+	return rc;
+}
+
+static int
+rbac_session_permissions_cb( Operation *op, SlapReply *rs )
+{
+	session_perm_req_t *sess_perm_reqp = op->o_callback->sc_private;
+	tenant_info_t *tenantp = NULL;
+	rbac_permission_t *permp = NULL;
+	rbac_ad_t *session_permissions_ads;
+	int i;
+
+	if ( rs->sr_type != REP_SEARCH ) return 0;
+
+	assert( sess_perm_reqp );
+
+	tenantp = sess_perm_reqp->tenantp;
+	session_permissions_ads = tenantp->schema->session_permissions_ads;
+
+	permp = ch_calloc( 1, sizeof(rbac_permission_t) );
+
+	for ( i = 0; !BER_BVISNULL( &session_permissions_ads[i].attr ); i++ ) {
+		Attribute *attr = NULL;
+
+		attr = attr_find(
+				rs->sr_entry->e_attrs, *session_permissions_ads[i].ad );
+		if ( attr != NULL ) {
+			switch ( session_permissions_ads[i].type ) {
+				case RBAC_USERS:
+					ber_bvarray_dup_x( &permp->uids, attr->a_nvals, NULL );
+					break;
+				case RBAC_ROLES:
+					ber_bvarray_dup_x( &permp->roles, attr->a_nvals, NULL );
+					break;
+				case RBAC_OBJ_NAME:
+					ber_bvarray_dup_x( &permp->objName, attr->a_nvals, NULL );
+					break;
+				case RBAC_OP_NAME:
+					ber_bvarray_dup_x( &permp->opName, attr->a_nvals, NULL );
+					break;
+			}
+		}
+	}
+
+	rbac_send_session_permission( sess_perm_reqp, permp );
+	rbac_free_permission( permp );
+	permp = NULL;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rbac_read_session_cb( Operation *op, SlapReply *rs )
+{
+	rbac_session_t *sessp = op->o_callback->sc_private;
+	int i;
+
+	if ( rs->sr_type != REP_SEARCH ) return 0;
+
+	ber_dupbv( &sessp->sessdn, &rs->sr_entry->e_name );
+
+	for ( i = 0; !BER_BVISNULL( &rbac_session_ads[i].attr ); i++ ) {
+		Attribute *attr = NULL;
+		attr = attr_find( rs->sr_entry->e_attrs, *rbac_session_ads[i].ad );
+		if ( attr != NULL ) {
+			switch ( rbac_session_ads[i].type ) {
+				case RBAC_SESSION_ID:
+					ber_dupbv( &sessp->sessid, &attr->a_vals[0] );
+					break;
+				case RBAC_USER_DN:
+					ber_dupbv( &sessp->userdn, &attr->a_vals[0] );
+					break;
+				case RBAC_ROLES:
+					ber_bvarray_dup_x( &sessp->roles, attr->a_nvals, NULL );
+					break;
+				case RBAC_ROLE_CONSTRAINTS:
+					ber_bvarray_dup_x(
+							&sessp->role_constraints, attr->a_nvals, NULL );
+					break;
+				case RBAC_UID:
+					ber_dupbv( &sessp->uid, &attr->a_vals[0] );
+					break;
+				case RBAC_TENANT_ID:
+					ber_dupbv( &sessp->tenantid, &attr->a_vals[0] );
+					break;
+				default:
+					break;
+			}
+		}
+	}
+
+	//return SLAP_CB_CONTINUE;
+	return 0;
+}
+
+/* check whether the session is owned by the user */
+int
+rbac_is_session_owner( rbac_session_t *sessp, rbac_req_t *reqp )
+{
+	int rc = 0;
+
+	if ( BER_BVISEMPTY( &sessp->uid ) || BER_BVISEMPTY( &reqp->uid ) ) {
+		Debug( LDAP_DEBUG_ANY, "session not owned by user\n" );
+		rc = 0;
+		goto done;
+	}
+
+	if ( !ber_bvstrcasecmp( &sessp->uid, &reqp->uid ) ) {
+		rc = 1;
+		goto done;
+	}
+
+done:;
+	return rc;
+}
+
+int
+rbac_session_add_role( Operation *op, rbac_session_t *sessp, rbac_req_t *reqp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	slap_callback cb = { 0 };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	rbac_callback_info_t rbac_cb;
+	tenant_info_t *tenantp = NULL;
+	struct berval vals[2];
+	Modifications mod;
+	int rc = LDAP_SUCCESS;
+
+	tenantp = rbac_tid2tenant( &reqp->tenantid );
+	if ( !tenantp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_add_role: "
+				"no tenant info with the req\n" );
+		goto done;
+	}
+
+	// convert the role name to lower case:
+	rbac_to_lower( &reqp->role );
+
+	//ber_dupbv( &vals[0], &reqp->roles[0]);
+	ber_dupbv( &vals[0], &reqp->role );
+	BER_BVZERO( &vals[1] );
+
+	/* create mod list */
+	mod.sml_op = LDAP_MOD_ADD;
+	mod.sml_flags = 0;
+	mod.sml_type = slap_rbac_schema.ad_session_roles->ad_cname;
+	mod.sml_desc = slap_rbac_schema.ad_session_roles;
+	mod.sml_numvals = 1;
+	mod.sml_values = vals;
+	mod.sml_nvalues = NULL;
+	mod.sml_next = NULL;
+
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_sess_fake_cb;
+	op2.o_callback = &cb;
+
+	op2.o_tag = LDAP_REQ_MODIFY;
+	op2.orm_modlist = &mod;
+	op2.o_req_dn = sessp->sessdn;
+	op2.o_req_ndn = sessp->sessdn;
+	op2.o_bd = select_backend( &op2.o_req_ndn, 0 );
+	op2.o_dn = op2.o_bd->be_rootdn;
+	op2.o_ndn = op2.o_bd->be_rootdn;
+	op2.ors_limit = NULL;
+	rc = op2.o_bd->be_modify( &op2, &rs2 );
+	ch_free( vals[0].bv_val );
+
+done:;
+	if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_add_active_role: "
+				"role already activated in session\n" );
+	}
+	return rc;
+}
+
+int
+rbac_session_drop_role( Operation *op, rbac_session_t *sessp, rbac_req_t *reqp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	slap_callback cb = { 0 };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	rbac_callback_info_t rbac_cb;
+	tenant_info_t *tenantp = NULL;
+	Modifications *m = NULL;
+	int rc = LDAP_SUCCESS;
+
+	tenantp = rbac_tid2tenant( &reqp->tenantid );
+	if ( !tenantp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_drop_role: "
+				"no tenant info with the req\n" );
+		goto done;
+	}
+
+	/* create mod list */
+	m = ch_calloc( sizeof(Modifications), 1 );
+	m->sml_op = LDAP_MOD_DELETE;
+	m->sml_flags = 0;
+	m->sml_type = slap_rbac_schema.ad_session_roles->ad_cname;
+	m->sml_desc = slap_rbac_schema.ad_session_roles;
+	m->sml_numvals = 1;
+	m->sml_values = ch_calloc( sizeof(struct berval), 2 );
+	m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
+	//ber_dupbv( &m->sml_values[0], &reqp->roles[0]);
+
+	// convert the role name to lower case:
+	rbac_to_lower( &reqp->role );
+
+	ber_dupbv( &m->sml_values[0], &reqp->role );
+
+	// todo: determine if this needs to be done:
+	//BER_BVZERO(&m->sml_values[1]);
+
+	ber_dupbv( &m->sml_nvalues[0], &reqp->role );
+	BER_BVZERO( &m->sml_nvalues[1] );
+
+	//ber_dupbv( &m->sml_nvalues[0], &reqp->roles[0]);
+	//ber_dupbv( &m->sml_nvalues[0], &reqp->role);
+	//BER_BVZERO(&m->sml_nvalues[1]);
+
+	m->sml_next = NULL;
+
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_sess_fake_cb;
+	op2.o_callback = &cb;
+
+	op2.o_dn = tenantp->session_admin;
+	op2.o_ndn = tenantp->session_admin;
+	op2.o_tag = LDAP_REQ_MODIFY;
+	op2.orm_modlist = m;
+	op2.o_req_dn = sessp->sessdn;
+	op2.o_req_ndn = sessp->sessdn;
+	op2.o_bd = select_backend( &op2.o_req_ndn, 0 );
+
+	op2.ors_limit = NULL;
+	rc = op2.o_bd->be_modify( &op2, &rs2 );
+
+done:;
+	if ( m ) {
+		slap_mods_free( m, 1 );
+	}
+
+	return rc;
+}
+
+/* delete the session */
+int
+rbac_int_delete_session( Operation *op, rbac_session_t *sessp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	slap_callback cb = { 0 };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	rbac_callback_info_t rbac_cb;
+	tenant_info_t *tenantp = NULL;
+	int rc = LDAP_SUCCESS;
+
+	tenantp = rbac_tid2tenant( &sessp->tenantid );
+	if ( !tenantp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_drop_role: "
+				"no tenant info with the req\n" );
+		goto done;
+	}
+
+	/* delete RBAC session */
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_sess_fake_cb;
+	op2.o_callback = &cb;
+
+	op2.o_dn = tenantp->session_admin;
+	op2.o_ndn = tenantp->session_admin;
+	op2.o_tag = LDAP_REQ_DELETE;
+	op2.o_req_dn = sessp->sessdn;
+	op2.o_req_ndn = sessp->sessdn;
+	op2.o_bd = select_backend( &op2.o_req_ndn, 0 );
+	rc = op2.o_bd->be_delete( &op2, &rs2 );
+
+done:;
+	return rc;
+}
+
+rbac_session_t *
+rbac_alloc_session()
+{
+	rbac_session_t *sessp = NULL;
+
+	sessp = ch_malloc( sizeof(rbac_session_t) );
+	sessp->sessid.bv_len =
+			lutil_uuidstr( sessp->uuidbuf, sizeof(sessp->uuidbuf) );
+	sessp->sessid.bv_val = sessp->uuidbuf;
+
+	sessp->user = NULL;
+	BER_BVZERO( &sessp->tenantid );
+	BER_BVZERO( &sessp->uid );
+	BER_BVZERO( &sessp->userdn );
+	BER_BVZERO( &sessp->sessdn );
+	BER_BVZERO( &sessp->message );
+
+	sessp->last_access = 0;
+	sessp->timeout = 0;
+	sessp->warning_id = 0;
+	sessp->error_id = 0;
+	sessp->grace_logins = 0;
+	sessp->expiration_secs = 0;
+	sessp->is_authenticated = 0;
+
+	sessp->roles = NULL;
+	sessp->role_constraints = NULL;
+
+	return sessp;
+}
+
+int
+rbac_register_session( Operation *op, SlapReply *rs, rbac_session_t *sessp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	struct berval rdn, nrdn;
+	SlapReply rs2 = { REP_RESULT };
+	OperationBuffer opbuf;
+	Operation *op2;
+	Connection conn = { 0 };
+	Entry *e = NULL;
+	int rc = LDAP_SUCCESS;
+	char rdnbuf[
+		STRLENOF(RBAC_SESSION_RDN_EQ) + LDAP_LUTIL_UUIDSTR_BUFSIZE + 1];
+	tenant_info_t *tenantp = rbac_tid2tenant( &sessp->tenantid );
+#ifdef USE_NEW_THREAD_CONTEXT
+	void *thrctx = ldap_pvt_thread_pool_context();
+#else
+	void *thrctx = op->o_tmpmemctx;
+#endif
+
+	if ( !sessp ) {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* dynamic objects */
+	e = entry_alloc();
+
+	strcpy( rdnbuf, RBAC_SESSION_RDN_EQ );
+	strncat( rdnbuf, sessp->sessid.bv_val, sessp->sessid.bv_len );
+	rdn.bv_val = rdnbuf;
+	rdn.bv_len = STRLENOF(RBAC_SESSION_RDN_EQ) + sessp->sessid.bv_len;
+	nrdn.bv_val = rdnbuf;
+	nrdn.bv_len = STRLENOF(RBAC_SESSION_RDN_EQ) + sessp->sessid.bv_len;
+
+	build_new_dn( &e->e_name, &tenantp->sessions_basedn, &rdn, NULL );
+	build_new_dn( &e->e_nname, &tenantp->sessions_basedn, &nrdn, NULL );
+
+	attr_merge_one( e, slap_schema.si_ad_objectClass, &slapo_session_oc, NULL );
+	attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
+			&slapo_session_oc, NULL );
+	attr_merge_one( e, slap_rbac_schema.ad_session_id, &sessp->sessid, NULL );
+
+	if ( !BER_BVISNULL( &sessp->uid ) ) {
+		attr_merge_one( e, slap_schema.si_ad_uid, &sessp->uid, NULL );
+	}
+
+	/* add tenant id */
+	if ( !BER_BVISNULL( &sessp->tenantid ) ) {
+		attr_merge_one(
+				e, slap_rbac_schema.ad_tenant_id, &sessp->tenantid, NULL );
+	}
+
+	/* add the userdn */
+	if ( !BER_BVISNULL( &sessp->userdn ) ) {
+		attr_merge_one(
+				e, slap_rbac_schema.ad_session_user_dn, &sessp->userdn, NULL );
+	}
+
+	if ( sessp->roles ) {
+		attr_merge( e, slap_rbac_schema.ad_session_roles, sessp->roles, NULL );
+	}
+
+	// TODO: ensure this is correct way to store constraints in session:
+	if ( sessp->role_constraints ) {
+		attr_merge( e, slap_rbac_schema.ad_session_role_constraints,
+				sessp->role_constraints, NULL );
+	}
+	/* rendered dynmaicObject */
+	attr_merge_one( e, slap_schema.si_ad_objectClass,
+			&slap_schema.si_oc_dynamicObject->soc_cname, NULL );
+
+	/* store RBAC session */
+	connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+	op2 = &opbuf.ob_op;
+	//Operation op2 = *op;
+	//op2.o_callback = &nullsc;
+	//rbac_callback_info_t rbac_cb;
+	//cb.sc_private      = &rbac_cb;
+	//cb.sc_response     = rbac_sess_fake_cb;
+	//op2.o_callback    = &cb;
+	//op2.ors_limit     = NULL;
+	op->o_callback = &nullsc;
+	op2->o_dn = tenantp->session_admin;
+	op2->o_ndn = tenantp->session_admin;
+	op2->o_tag = LDAP_REQ_ADD;
+	op2->o_protocol = LDAP_VERSION3;
+	op2->o_req_dn = e->e_name;
+	op2->o_req_ndn = e->e_nname;
+	op2->ora_e = e;
+	op2->o_bd = frontendDB;
+
+	rc = op2->o_bd->be_add( op2, &rs2 );
+
+done:;
+	if ( e ) entry_free( e );
+	return rc;
+}
+
+int
+rbac_register_session2( Operation *op, SlapReply *rs, rbac_session_t *sessp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	struct berval rdn, nrdn;
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	rbac_callback_info_t rbac_cb;
+	//OperationBuffer opbuf;
+	//Connection conn = {0};
+	Entry *e = NULL;
+	int rc = LDAP_SUCCESS;
+	char rdnbuf[STRLENOF(RBAC_SESSION_RDN_EQ) + LDAP_LUTIL_UUIDSTR_BUFSIZE +
+			1];
+	tenant_info_t *tenantp = rbac_tid2tenant( &sessp->tenantid );
+	slap_callback cb = { 0 };
+	//#ifdef USE_NEW_THREAD_CONTEXT
+	//	void *thrctx = ldap_pvt_thread_pool_context();
+	//#else
+	//	void *thrctx = op->o_tmpmemctx;
+	//#endif
+
+	if ( !sessp ) {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* dynamic objects */
+	e = entry_alloc();
+
+	strcpy( rdnbuf, RBAC_SESSION_RDN_EQ );
+	strncat( rdnbuf, sessp->sessid.bv_val, sessp->sessid.bv_len );
+	rdn.bv_val = rdnbuf;
+	rdn.bv_len = STRLENOF(RBAC_SESSION_RDN_EQ) + sessp->sessid.bv_len;
+	nrdn.bv_val = rdnbuf;
+	nrdn.bv_len = STRLENOF(RBAC_SESSION_RDN_EQ) + sessp->sessid.bv_len;
+
+	build_new_dn( &e->e_name, &tenantp->sessions_basedn, &rdn, NULL );
+	build_new_dn( &e->e_nname, &tenantp->sessions_basedn, &nrdn, NULL );
+
+	attr_merge_one( e, slap_schema.si_ad_objectClass, &slapo_session_oc, NULL );
+	attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
+			&slapo_session_oc, NULL );
+	attr_merge_one( e, slap_rbac_schema.ad_session_id, &sessp->sessid, NULL );
+
+	if ( !BER_BVISNULL( &sessp->uid ) ) {
+		attr_merge_one( e, slap_schema.si_ad_uid, &sessp->uid, NULL );
+	}
+
+	/* add tenant id */
+	if ( !BER_BVISNULL( &sessp->tenantid ) ) {
+		attr_merge_one(
+				e, slap_rbac_schema.ad_tenant_id, &sessp->tenantid, NULL );
+	}
+
+	/* add the userdn */
+	if ( !BER_BVISNULL( &sessp->userdn ) ) {
+		attr_merge_one(
+				e, slap_rbac_schema.ad_session_user_dn, &sessp->userdn, NULL );
+	}
+
+	if ( sessp->roles ) {
+		attr_merge( e, slap_rbac_schema.ad_session_roles, sessp->roles, NULL );
+	}
+
+	// TODO: ensure this is correct way to store constraints in session:
+	if ( sessp->role_constraints ) {
+		attr_merge( e, slap_rbac_schema.ad_session_role_constraints,
+				sessp->role_constraints, NULL );
+	}
+	/* rendered dynmaicObject */
+	attr_merge_one( e, slap_schema.si_ad_objectClass,
+			&slap_schema.si_oc_dynamicObject->soc_cname, NULL );
+
+	/* store RBAC session */
+	//connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+	//op2 = &opbuf.ob_op;
+	//op2.o_ctrlflag = op->o_ctrlflag;
+	// todo this ain't right"
+	//op2.o_ctrlflag = 0;
+	//OperationBuffer *opbuf;
+	//memset( opbuf, 0, sizeof(OperationBuffer));
+	//op2.o_hdr = &opbuf->ob_hdr;
+	//op2.o_controls = opbuf->ob_controls;
+
+	// fails on modify.c:353 with segfault
+
+	//op2.o_callback = &nullsc;
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_sess_fake_cb;
+	op2.o_callback = &cb;
+	op2.o_dn = tenantp->session_admin;
+	op2.o_ndn = tenantp->session_admin;
+	op2.o_tag = LDAP_REQ_ADD;
+	op2.o_protocol = LDAP_VERSION3;
+	op2.o_req_dn = e->e_name;
+	op2.o_req_ndn = e->e_nname;
+	op2.ora_e = e;
+	op2.o_bd = frontendDB;
+	//op2.ors_limit     = NULL;
+
+	rc = op2.o_bd->be_add( &op2, &rs2 );
+
+done:;
+	if ( e ) entry_free( e );
+
+	return rc;
+}
+
+int
+rbac_is_valid_session_id( struct berval *sessid )
+{
+	/* TODO: simple test */
+	if ( !sessid || sessid->bv_len != 36 ) {
+		if ( !sessid ) {
+			Debug( LDAP_DEBUG_ANY, "rbac_is_valid_session_id: "
+					"null sessid\n" );
+		} else {
+			Debug( LDAP_DEBUG_ANY, "rbac_is_valid_session_id: "
+					"len (%lu)\n",
+					sessid->bv_len );
+		}
+		return 0;
+	}
+
+	else {
+		return 1;
+	}
+}
+
+/* create an rbac request with the session ID */
+rbac_req_t *
+rbac_is_search_session_permissions( Operation *op )
+{
+	rbac_req_t *reqp = NULL;
+
+	/* check whether the search for sessionPermissions and *
+	 * with a valid sessionID */
+
+	return reqp;
+}
+
+rbac_session_t *
+rbac_session_byid_fake( Operation *op, rbac_req_t *reqp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_session_t *sessp = NULL;
+	int rc = LDAP_SUCCESS;
+	char fbuf[RBAC_BUFLEN];
+	struct berval filter = { sizeof(fbuf), fbuf };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	rbac_callback_info_t rbac_cb;
+	slap_callback cb = { 0 };
+	tenant_info_t *tenantp = NULL;
+
+	if ( !rbac_is_valid_session_id( &reqp->sessid ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_byid: "
+				"invalid session id (%s)\n",
+				reqp->sessid.bv_val );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	sessp = rbac_alloc_session();
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_byid: "
+				"unable to allocate session memory\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	tenantp = rbac_tid2tenant( &reqp->tenantid );
+
+	/* session id filter */
+	memset( fbuf, 0, sizeof(fbuf) );
+	strcpy( fbuf, RBAC_SESSION_RDN_EQ );
+	strncpy( &fbuf[0] + sizeof(RBAC_SESSION_RDN_EQ) - 1, reqp->sessid.bv_val,
+			reqp->sessid.bv_len );
+	filter.bv_val = fbuf;
+	filter.bv_len = strlen( fbuf );
+
+	//cb.sc_private     = sessp;
+	//cb.sc_response    = rbac_read_session_cb;
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_sess_fake_cb;
+	op2.o_callback = &cb;
+	op2.o_tag = LDAP_REQ_SEARCH;
+	op2.o_dn = tenantp->session_admin;
+	op2.o_ndn = tenantp->session_admin;
+	op2.o_req_dn = tenantp->sessions_basedn;
+	op2.o_req_ndn = tenantp->sessions_basedn;
+	op2.ors_filterstr = filter;
+	op2.ors_filter = str2filter_x( &op2, filter.bv_val );
+	op2.ors_scope = LDAP_SCOPE_SUBTREE;
+	op2.ors_attrs = slap_rbac_schema.session_attrs;
+	op2.ors_tlimit = SLAP_NO_LIMIT;
+	op2.ors_slimit = SLAP_NO_LIMIT;
+	op2.o_bd = frontendDB;
+	// hyc change to fix seg fault:
+	op2.ors_limit = NULL;
+
+	rc = op2.o_bd->be_search( &op2, &rs2 );
+	filter_free_x( &op2, op2.ors_filter, 1 );
+
+done:
+	// TODO: find equivalent way of check nentries (broke with fake connection fix)
+	//if ( rc != LDAP_SUCCESS || rs2.sr_nentries <= 0 ) {
+	if ( rc != LDAP_SUCCESS ) {
+		rbac_free_session( sessp );
+		sessp = NULL;
+	}
+
+	return sessp;
+}
+
+rbac_session_t *
+rbac_session_byid( Operation *op, rbac_req_t *reqp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	rbac_session_t *sessp = NULL;
+	int rc = LDAP_SUCCESS;
+	char fbuf[RBAC_BUFLEN];
+	struct berval filter = { sizeof(fbuf), fbuf };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	slap_callback cb = { 0 };
+	tenant_info_t *tenantp = NULL;
+
+	if ( !rbac_is_valid_session_id( &reqp->sessid ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_byid: "
+				"invalid session id (%s)\n",
+				reqp->sessid.bv_val );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	sessp = rbac_alloc_session();
+	if ( !sessp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_session_byid: "
+				"unable to allocate session memory\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	tenantp = rbac_tid2tenant( &reqp->tenantid );
+
+	/* session id filter */
+	memset( fbuf, 0, sizeof(fbuf) );
+	strcpy( fbuf, RBAC_SESSION_RDN_EQ );
+	strncpy( &fbuf[0] + sizeof(RBAC_SESSION_RDN_EQ) - 1, reqp->sessid.bv_val,
+			reqp->sessid.bv_len );
+	filter.bv_val = fbuf;
+	filter.bv_len = strlen( fbuf );
+
+	cb.sc_private = sessp;
+	cb.sc_response = rbac_read_session_cb;
+	op2.o_callback = &cb;
+	op2.o_tag = LDAP_REQ_SEARCH;
+	op2.o_dn = tenantp->session_admin;
+	op2.o_ndn = tenantp->session_admin;
+	op2.o_req_dn = tenantp->sessions_basedn;
+	op2.o_req_ndn = tenantp->sessions_basedn;
+	op2.ors_filterstr = filter;
+	op2.ors_filter = str2filter_x( &op2, filter.bv_val );
+	op2.ors_scope = LDAP_SCOPE_SUBTREE;
+	op2.ors_attrs = slap_rbac_schema.session_attrs;
+	op2.ors_tlimit = SLAP_NO_LIMIT;
+	op2.ors_slimit = SLAP_NO_LIMIT;
+	op2.o_bd = frontendDB;
+	// hyc change to fix seg fault:
+	op2.ors_limit = NULL;
+
+	rc = op2.o_bd->be_search( &op2, &rs2 );
+	filter_free_x( &op2, op2.ors_filter, 1 );
+
+done:
+	// TODO: find equivalent way of check nentries (broke with fake connection fix)
+	//if ( rc != LDAP_SUCCESS || rs2.sr_nentries <= 0 ) {
+	if ( rc != LDAP_SUCCESS ) {
+		rbac_free_session( sessp );
+		sessp = NULL;
+	}
+
+	return sessp;
+}
+
+static char *
+rbac_int_session_permissions_filterstr( Operation *op, rbac_session_t *sessp )
+{
+	char filterbuf[RBAC_BUFLEN];
+	int i;
+
+	memset( filterbuf, 0, sizeof(filterbuf) );
+
+	strcat( filterbuf, "(&(objectClass=ftOperation)(|" );
+	strcat( filterbuf, "(ftUsers=" );
+	strcat( filterbuf, sessp->uid.bv_val );
+	strcat( filterbuf, ")" );
+
+	/* add ftRoles filters */
+	for ( i = 0; !BER_BVISEMPTY( &sessp->roles[i] ); i++ ) {
+		strcat( filterbuf, "(ftRoles=" );
+		strncat( filterbuf, sessp->roles[i].bv_val, sessp->roles[i].bv_len );
+		strcat( filterbuf, ")" );
+	}
+	strcat( filterbuf, "))" );
+	return strdup( filterbuf );
+}
+
+int
+rbac_int_session_permissions(
+		Operation *op,
+		SlapReply *rs,
+		rbac_req_t *reqp,
+		rbac_session_t *sessp )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	tenant_info_t *tenantp = NULL;
+	int rc;
+	struct berval filter;
+	char *filterstr;
+	struct berval permndn = BER_BVNULL;
+	OperationBuffer opbuf;
+	Connection conn = { 0 };
+	SlapReply rs2 = { REP_RESULT };
+	Operation *op2;
+	slap_callback cb = { 0 };
+	char permbuf[1024];
+	session_perm_req_t sess_perm_req;
+#ifdef USE_NEW_THREAD_CONTEXT
+	void *thrctx = ldap_pvt_thread_pool_context();
+#else
+	void *thrctx = op->o_tmpmemctx;
+#endif
+
+	tenantp = rbac_tid2tenant( &reqp->tenantid );
+
+	/* construct session permissions dn */
+	memset( permbuf, 0, sizeof(permbuf) );
+	strcat( permbuf, "rbacSessid=" );
+	strncat( permbuf, sessp->sessid.bv_val, sessp->sessid.bv_len );
+	strcat( permbuf, ",dc=rbac" );
+	sess_perm_req.op = op;
+	sess_perm_req.rs = rs;
+	sess_perm_req.permdn.bv_val = permbuf;
+	sess_perm_req.permdn.bv_len = strlen( permbuf );
+	sess_perm_req.sessid = &reqp->sessid;
+	sess_perm_req.tenantp = tenantp;
+
+	filterstr = rbac_int_session_permissions_filterstr( op, sessp );
+	if ( !filterstr ) {
+		Debug( LDAP_DEBUG_ANY, "unable to construct filter for session permissions\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+	filter.bv_val = filterstr;
+	filter.bv_len = strlen( filterstr );
+
+	rc = dnNormalize(
+			0, NULL, NULL, &tenantp->permissions_basedn, &permndn, NULL );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
+				"unable to normalize permission DN\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+	op2 = &opbuf.ob_op;
+	//Operation op2 = *op;
+	cb.sc_private = &sess_perm_req;
+	cb.sc_response = rbac_session_permissions_cb;
+	op2->o_callback = &cb;
+	op2->o_tag = LDAP_REQ_SEARCH;
+	op2->o_dn = tenantp->admin;
+	op2->o_ndn = tenantp->admin;
+	op2->o_req_dn = tenantp->permissions_basedn;
+	op2->o_req_ndn = permndn;
+	op2->ors_filterstr = filter;
+	op2->ors_filter = str2filter_x( op, filter.bv_val );
+	op2->ors_scope = LDAP_SCOPE_SUB;
+	op2->ors_attrs = tenantp->schema->session_perm_attrs;
+	op2->ors_tlimit = SLAP_NO_LIMIT;
+	op2->ors_slimit = SLAP_NO_LIMIT;
+	op2->ors_attrsonly = 0;
+	op2->o_bd = frontendDB;
+	//op2.ors_limit     = NULL;
+	rc = op2->o_bd->be_search( op2, &rs2 );
+	filter_free_x( op, op2->ors_filter, 1 );
+
+done:;
+	/* generate audit log */
+	rbac_audit( op, SessionPermissions, sessp, reqp, rc, (char *)rs->sr_text );
+
+	rs->sr_err = rc;
+	return rs->sr_err;
+}
+
+void
+rbac_free_session( rbac_session_t *sessp )
+{
+	if ( !sessp ) return;
+
+	if ( sessp->user ) {
+		rbac_free_user( sessp->user );
+	}
+
+	if ( !BER_BVISNULL( &sessp->uid ) ) {
+		ber_memfree( sessp->uid.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &sessp->tenantid ) ) {
+		ber_memfree( sessp->tenantid.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &sessp->userdn ) ) {
+		ber_memfree( sessp->userdn.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &sessp->sessdn ) ) {
+		ber_memfree( sessp->sessdn.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &sessp->message ) ) {
+		ber_memfree( sessp->message.bv_val );
+	}
+
+	if ( sessp->roles ) {
+		ber_bvarray_free( sessp->roles );
+	}
+
+	if ( sessp->role_constraints ) {
+		ber_bvarray_free( sessp->role_constraints );
+	}
+
+	ch_free( sessp );
+
+	return;
+}
+
+/* roles included from request are activated into a session only when
+ * they exist and have been assigned to the user. If no roles included in request, all
+ * roles assigned to the user are activated into the rbac session.
+ */
+int
+activate_session_roles(
+		rbac_session_t *sessp,
+		rbac_req_t *reqp,
+		rbac_user_t *userp )
+{
+	int i, j, rc = LDAP_UNWILLING_TO_PERFORM;
+	if ( !sessp || !reqp || !userp ) {
+		goto done;
+	}
+
+	/* no role requested, assign all roles from the user to the session. */
+	if ( reqp->roles == NULL || BER_BVISNULL( &reqp->roles[0] ) ) {
+		//if (!reqp->roles || BER_BVISNULL(&reqp->roles[0])) {
+		/* no roles assigned to the user */
+		if ( !userp->roles || BER_BVISNULL( &userp->roles[0] ) ) goto done;
+		for ( i = 0; !BER_BVISNULL( &userp->roles[i] ); i++ ) {
+			struct berval role;
+			ber_dupbv_x( &role, &userp->roles[i], NULL );
+			ber_bvarray_add( &sessp->roles, &role );
+			rc = LDAP_SUCCESS;
+		}
+
+		// TODO: smm 20141218 - make sure this is correct way to add constraints to user session.
+		for ( i = 0; !BER_BVISNULL( &userp->role_constraints[i] ); i++ ) {
+			struct berval roleconstraint;
+			ber_dupbv_x( &roleconstraint, &userp->role_constraints[i], NULL );
+			ber_bvarray_add( &sessp->role_constraints, &roleconstraint );
+			rc = LDAP_SUCCESS;
+		}
+
+	} else {
+		for ( i = 0; !BER_BVISNULL( &reqp->roles[i] ); i++ ) {
+			for ( j = 0; !BER_BVISNULL( &userp->roles[j] ); j++ ) {
+				if ( !ber_bvstrcasecmp( &reqp->roles[i], &userp->roles[j] ) ) {
+					/* requested role is assigned to the user */
+					struct berval role;
+					ber_dupbv_x( &role, &userp->roles[i], NULL );
+					ber_bvarray_add( &sessp->roles, &role );
+					rc = LDAP_SUCCESS;
+				}
+			}
+		}
+	}
+
+done:;
+	return rc;
+}
diff --git a/contrib/slapd-modules/rbac/rbacuser.c b/contrib/slapd-modules/rbac/rbacuser.c
new file mode 100644
index 0000000..59d3c01
--- /dev/null
+++ b/contrib/slapd-modules/rbac/rbacuser.c
@@ -0,0 +1,620 @@
+/* rbacuser.c - RBAC users */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+static int ppolicy_cid = -1;
+
+static rbac_user_t *
+rbac_alloc_user()
+{
+	rbac_user_t *userp = ch_calloc( 1, sizeof(rbac_user_t) );
+
+	BER_BVZERO( &userp->tenantid );
+	BER_BVZERO( &userp->uid );
+	BER_BVZERO( &userp->dn );
+	BER_BVZERO( &userp->password );
+	BER_BVZERO( &userp->constraints );
+	BER_BVZERO( &userp->msg );
+	userp->roles = NULL;
+	userp->role_constraints = NULL;
+
+	return userp;
+}
+
+static int
+rbac_read_user_cb( Operation *op, SlapReply *rs )
+{
+	rbac_callback_info_t *cbp = op->o_callback->sc_private;
+	rbac_ad_t *user_ads;
+	rbac_user_t *userp = NULL;
+	int rc = 0, i;
+
+	Debug( LDAP_DEBUG_ANY, "rbac_read_user_cb\n" );
+
+	if ( rs->sr_type != REP_SEARCH ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_user_cb: "
+				"sr_type != REP_SEARCH\n" );
+		return 0;
+	}
+
+	assert( cbp );
+
+	user_ads = cbp->tenantp->schema->user_ads;
+
+	userp = rbac_alloc_user();
+	if ( !userp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_user_cb: "
+				"rbac_alloc_user failed\n" );
+
+		goto done;
+	}
+
+	ber_dupbv( &userp->dn, &rs->sr_entry->e_name );
+
+	Debug( LDAP_DEBUG_ANY, "DEBUG rbac_read_user_cb (%s): "
+			"rc (%d)\n",
+			userp->dn.bv_val, rc );
+
+	for ( i = 0; !BER_BVISNULL( &user_ads[i].attr ); i++ ) {
+		Attribute *attr = NULL;
+
+		attr = attr_find( rs->sr_entry->e_attrs, *user_ads[i].ad );
+		if ( attr != NULL ) {
+			switch ( user_ads[i].type ) {
+				case RBAC_ROLE_ASSIGNMENT:
+					ber_bvarray_dup_x( &userp->roles, attr->a_nvals, NULL );
+					break;
+				case RBAC_ROLE_CONSTRAINTS:
+					ber_bvarray_dup_x(
+							&userp->role_constraints, attr->a_nvals, NULL );
+					break;
+				case RBAC_USER_CONSTRAINTS:
+					ber_dupbv_x( &userp->constraints, &attr->a_nvals[0], NULL );
+					break;
+				case RBAC_UID:
+					ber_dupbv_x( &userp->uid, &attr->a_nvals[0], NULL );
+					break;
+				default:
+					break;
+			}
+		}
+	}
+
+done:;
+	cbp->private = userp;
+
+	return 0;
+}
+
+static int
+rbac_bind_cb( Operation *op, SlapReply *rs )
+{
+	rbac_user_t *ui = op->o_callback->sc_private;
+
+	LDAPControl *ctrl = ldap_control_find(
+			LDAP_CONTROL_PASSWORDPOLICYRESPONSE, rs->sr_ctrls, NULL );
+	if ( ctrl ) {
+		LDAP *ld;
+		ber_int_t expire, grace;
+		LDAPPasswordPolicyError error;
+
+		ldap_create( &ld );
+		if ( ld ) {
+			int rc = ldap_parse_passwordpolicy_control(
+					ld, ctrl, &expire, &grace, &error );
+			if ( rc == LDAP_SUCCESS ) {
+				ui->authz = RBAC_PASSWORD_GOOD;
+				if ( grace > 0 ) {
+					//ui->msg.bv_len = sprintf(ui->msg.bv_val,
+					//		"Password expired; %d grace logins remaining",
+					//		grace);
+					ui->authz = RBAC_BIND_NEW_AUTHTOK_REQD;
+				} else if ( error != PP_noError ) {
+					ber_str2bv( ldap_passwordpolicy_err2txt( error ), 0, 0,
+							&ui->msg );
+
+					switch ( error ) {
+						case PP_passwordExpired:
+							ui->authz = RBAC_PASSWORD_EXPIRATION_WARNING;
+
+							if ( expire >= 0 ) {
+								char *unit = "seconds";
+								if ( expire > 60 ) {
+									expire /= 60;
+									unit = "minutes";
+								}
+								if ( expire > 60 ) {
+									expire /= 60;
+									unit = "hours";
+								}
+								if ( expire > 24 ) {
+									expire /= 24;
+									unit = "days";
+								}
+#if 0 /* Who warns about expiration so far in advance? */
+								if (expire > 7) {
+									expire /= 7;
+									unit = "weeks";
+								}
+								if (expire > 4) {
+									expire /= 4;
+									unit = "months";
+								}
+								if (expire > 12) {
+									expire /= 12;
+									unit = "years";
+								}
+#endif
+							}
+
+							//rs->sr_err = ;
+							break;
+						case PP_accountLocked:
+							ui->authz = RBAC_ACCOUNT_LOCKED;
+							//rs->sr_err = ;
+							break;
+						case PP_changeAfterReset:
+							ui->authz = RBAC_CHANGE_AFTER_RESET;
+							rs->sr_err = LDAP_SUCCESS;
+							break;
+						case PP_passwordModNotAllowed:
+							ui->authz = RBAC_NO_MODIFICATIONS;
+							//rs->sr_err = ;
+							break;
+						case PP_mustSupplyOldPassword:
+							ui->authz = RBAC_MUST_SUPPLY_OLD;
+							//rs->sr_err = ;
+							break;
+						case PP_insufficientPasswordQuality:
+							ui->authz = RBAC_INSUFFICIENT_QUALITY;
+							//rs->sr_err = ;
+							break;
+						case PP_passwordTooShort:
+							ui->authz = RBAC_PASSWORD_TOO_SHORT;
+							//rs->sr_err = ;
+							break;
+						case PP_passwordTooYoung:
+							ui->authz = RBAC_PASSWORD_TOO_YOUNG;
+							//rs->sr_err = ;
+							break;
+						case PP_passwordInHistory:
+							ui->authz = RBAC_HISTORY_VIOLATION;
+							//rs->sr_err = ;
+							break;
+						case PP_noError:
+						default:
+							// do nothing
+							//ui->authz = RBAC_PASSWORD_GOOD;
+							rs->sr_err = LDAP_SUCCESS;
+							break;
+					}
+
+//					switch (error) {
+//					case PP_passwordExpired:
+						/* report this during authz */
+//						rs->sr_err = LDAP_SUCCESS;
+						/* fallthru */
+//					case PP_changeAfterReset:
+//						ui->authz = RBAC_BIND_NEW_AUTHTOK_REQD;
+//					}
+				}
+			}
+			ldap_unbind_ext( ld, NULL, NULL );
+		}
+	}
+
+	return 0;
+}
+
+/* exported user functions */
+int
+rbac_authenticate_user( Operation *op, rbac_user_t *userp )
+{
+	int rc = LDAP_SUCCESS;
+	slap_callback cb = { 0 };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	LDAPControl *sctrls[4];
+	LDAPControl sctrl[3];
+	int nsctrls = 0;
+	LDAPControl c;
+	struct berval ber_bvnull = BER_BVNULL;
+	struct berval dn, ndn;
+
+	rc = dnPrettyNormal( 0, &userp->dn, &dn, &ndn, NULL );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	cb.sc_response = rbac_bind_cb;
+	cb.sc_private = userp;
+	op2.o_callback = &cb;
+	op2.o_dn = ber_bvnull;
+	op2.o_ndn = ber_bvnull;
+	op2.o_tag = LDAP_REQ_BIND;
+	op2.o_protocol = LDAP_VERSION3;
+	op2.orb_method = LDAP_AUTH_SIMPLE;
+	op2.orb_cred = userp->password;
+	op2.o_req_dn = dn;
+	op2.o_req_ndn = ndn;
+
+	// loading the ldap pw policy controls loaded into here, added by smm:
+	c.ldctl_oid = LDAP_CONTROL_PASSWORDPOLICYREQUEST;
+	c.ldctl_value.bv_val = NULL;
+	c.ldctl_value.bv_len = 0;
+	c.ldctl_iscritical = 0;
+	sctrl[nsctrls] = c;
+	sctrls[nsctrls] = &sctrl[nsctrls];
+	sctrls[++nsctrls] = NULL;
+	op2.o_ctrls = sctrls;
+
+	if ( ppolicy_cid < 0 ) {
+		rc = slap_find_control_id( LDAP_CONTROL_PASSWORDPOLICYREQUEST,
+				&ppolicy_cid );
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+	}
+	// smm - need to set the control flag too:
+	op2.o_ctrlflag[ppolicy_cid] = SLAP_CONTROL_CRITICAL;
+
+	slap_op_time( &op2.o_time, &op2.o_tincr );
+	op2.o_bd = frontendDB;
+	rc = op2.o_bd->be_bind( &op2, &rs2 );
+	if ( userp->authz > 0 ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_authenticate_user (%s): "
+				"password policy violation (%d)\n",
+				userp->dn.bv_val ? userp->dn.bv_val : "NULL", userp->authz );
+	}
+
+done:;
+	ch_free( dn.bv_val );
+	ch_free( ndn.bv_val );
+
+	Debug( LDAP_DEBUG_ANY, "rbac_authenticate_user (%s): "
+			"rc (%d)\n",
+			userp->dn.bv_val ? userp->dn.bv_val : "NULL", rc );
+	return rc;
+}
+
+/*
+	isvalidusername(): from OpenLDAP ~/contrib/slapd-modules/nssov/passwd.c
+	Checks to see if the specified name is a valid user name.
+
+    This test is based on the definition from POSIX (IEEE Std 1003.1, 2004, 3.426 User Name
+	 and 3.276 Portable Filename Character Set):
+	 http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_426
+	 http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_276
+
+	 The standard defines user names valid if they contain characters from
+	 the set [A-Za-z0-9._-] where the hyphen should not be used as first
+	 character. As an extension this test allows the dolar '$' sign as the last
+	 character to support Samba special accounts.
+*/
+static int
+isvalidusername( struct berval *bv )
+{
+	int i;
+	char *name = bv->bv_val;
+	if ( (name == NULL) || ( name[0] == '\0' ) ) return 0;
+	/* check first character */
+	if ( !( ( name[0] >= 'A' && name[0] <= 'Z' ) ||
+				 ( name[0] >= 'a' && name[0] <= 'z' ) ||
+				 ( name[0] >= '0' && name[0] <= '9' ) || name[0] == '.' ||
+				 name[0] == '_' ) )
+		return 0;
+	/* check other characters */
+	for ( i = 1; i < bv->bv_len; i++ ) {
+		if ( name[i] == '$' ) {
+			/* if the char is $ we require it to be the last char */
+			if ( name[i + 1] != '\0' ) return 0;
+		} else if ( !( ( name[i] >= 'A' && name[i] <= 'Z' ) ||
+							( name[i] >= 'a' && name[i] <= 'z' ) ||
+							( name[i] >= '0' && name[i] <= '9' ) ||
+							name[i] == '.' || name[i] == '_' ||
+							name[i] == '-' ) )
+			return 0;
+	}
+	/* no test failed so it must be good */
+	return -1;
+}
+
+rbac_user_t *
+rbac_read_user( Operation *op, rbac_req_t *reqp )
+{
+	int rc = LDAP_SUCCESS;
+	tenant_info_t *tenantp = rbac_tid2tenant( &reqp->tenantid );
+	rbac_user_t *userp = NULL;
+	char fbuf[RBAC_BUFLEN];
+	struct berval filter = { sizeof(fbuf), fbuf };
+	SlapReply rs2 = { REP_RESULT };
+	Operation op2 = *op;
+	slap_callback cb = { 0 };
+	rbac_callback_info_t rbac_cb;
+
+	if ( !tenantp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_user: "
+				"missing tenant information\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* uid is a pre-requisite for reading the user information */
+	if ( BER_BVISNULL( &reqp->uid ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_user: "
+				"missing uid, unable to read user entry\n" );
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	if ( !isvalidusername( &reqp->uid ) ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_read_user: "
+				"invalid user id\n" );
+		rc = LDAP_NO_SUCH_OBJECT;
+		goto done;
+	}
+
+	rbac_cb.tenantp = tenantp;
+	rbac_cb.private = NULL;
+
+	memset( fbuf, 0, sizeof(fbuf) );
+	strcpy( fbuf, "uid=" );
+	strncat( fbuf, reqp->uid.bv_val, reqp->uid.bv_len );
+	filter.bv_val = fbuf;
+	filter.bv_len = strlen( fbuf );
+
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_create_session: "
+				"invalid DN syntax\n" );
+		goto done;
+	}
+
+	cb.sc_private = &rbac_cb;
+	cb.sc_response = rbac_read_user_cb;
+	op2.o_callback = &cb;
+	op2.o_tag = LDAP_REQ_SEARCH;
+	op2.o_dn = tenantp->admin;
+	op2.o_ndn = tenantp->admin;
+	op2.o_req_dn = tenantp->users_basedn;
+	op2.o_req_ndn = tenantp->users_basedn;
+	op2.ors_filterstr = filter;
+	op2.ors_filter = str2filter_x( &op2, filter.bv_val );
+	op2.ors_scope = LDAP_SCOPE_SUBTREE;
+	op2.ors_attrs = tenantp->schema->user_attrs;
+	op2.ors_tlimit = SLAP_NO_LIMIT;
+	op2.ors_slimit = SLAP_NO_LIMIT;
+	op2.ors_attrsonly = 0;
+	op2.o_bd = frontendDB;
+	op2.ors_limit = NULL;
+	rc = op2.o_bd->be_search( &op2, &rs2 );
+	filter_free_x( &op2, op2.ors_filter, 1 );
+
+done:;
+	if ( rc == LDAP_SUCCESS && rbac_cb.private ) {
+		userp = (rbac_user_t *)rbac_cb.private;
+		if ( !BER_BVISNULL( &reqp->authtok ) )
+			ber_dupbv( &userp->password, &reqp->authtok );
+		rbac_cb.private = NULL;
+		return userp;
+	} else {
+		userp = (rbac_user_t *)rbac_cb.private;
+		rbac_free_user( userp );
+		return NULL;
+	}
+}
+
+/* evaluate temporal constraints for the user */
+int
+rbac_user_temporal_constraint( rbac_user_t *userp )
+{
+	int rc = LDAP_SUCCESS;
+	rbac_constraint_t *cp = NULL;
+
+	if ( BER_BVISNULL( &userp->constraints ) ) {
+		/* no temporal constraint */
+		goto done;
+	}
+
+	cp = rbac_bv2constraint( &userp->constraints );
+	if ( !cp ) {
+		Debug( LDAP_DEBUG_ANY, "rbac_user_temporal_constraint: "
+				"invalid user constraint \n" );
+		rc = LDAP_OTHER;
+		goto done;
+	}
+
+	rc = rbac_check_time_constraint( cp );
+
+done:;
+	rbac_free_constraint( cp );
+
+	return rc;
+}
+
+/*
+rbac_constraint_t *
+rbac_user_role_constraintsx(rbac_user_t *userp)
+{
+	rbac_constraint_t *tmp, *cp = NULL;
+	int i = 0;
+
+	if (!userp || !userp->role_constraints)
+		goto done;
+
+	while (!BER_BVISNULL(&userp->role_constraints[i])) {
+		tmp = rbac_bv2constraint(&userp->role_constraints[i++]);
+		if (tmp) {
+			if (!cp) {
+				cp = tmp;
+			} else {
+				tmp->next = cp;
+				cp = tmp;
+			}
+		}
+	}
+
+done:;
+	return cp;
+}
+*/
+
+rbac_constraint_t *
+rbac_user_role_constraints( BerVarray values )
+{
+	rbac_constraint_t *curr, *head = NULL;
+	int i = 0;
+
+	if ( values ) {
+		while ( !BER_BVISNULL( &values[i] ) ) {
+			curr = rbac_bv2constraint( &values[i++] );
+			if ( curr ) {
+				curr->next = head;
+				head = curr;
+			}
+		}
+	}
+
+	return head;
+}
+
+/*
+
+void main() {
+   item * curr, * head;
+   int i;
+
+   head = NULL;
+
+   for(i=1;i<=10;i++) {
+      curr = (item *)malloc(sizeof(item));
+      curr->val = i;
+      curr->next  = head;
+      head = curr;
+   }
+
+   curr = head;
+
+   while(curr) {
+      printf("%d\n", curr->val);
+      curr = curr->next ;
+   }
+}
+
+ */
+
+/*
+ *
+rbac_user_role_constraints2(BerVarray values)
+{
+	rbac_constraint_t *tmp, *cp = NULL;
+	int i = 0;
+
+	if (!values)
+		goto done;
+
+	while (!BER_BVISNULL(&values[i])) {
+		tmp = rbac_bv2constraint(&values[i++]);
+		if (tmp) {
+			if (!cp) {
+				cp = tmp;
+			} else {
+				tmp->next = cp;
+				cp = tmp;
+				//cp->next = tmp;
+				//cp = tmp->next;
+
+			}
+		}
+	}
+
+done:;
+	return cp;
+}
+
+
+rbac_user_role_constraints3(rbac_constraint_t *values)
+{
+	rbac_constraint_t *tmp, *cp = NULL;
+	int i = 0;
+
+	if (!values)
+		goto done;
+
+	while (!BER_BVISNULL(values[i])) {
+		tmp = rbac_bv2constraint(&values[i++]);
+		if (tmp) {
+			if (!cp) {
+				cp = tmp;
+			} else {
+				tmp->next = cp;
+				cp = tmp;
+			}
+		}
+	}
+
+done:;
+	return cp;
+}
+*/
+
+void
+rbac_free_user( rbac_user_t *userp )
+{
+	if ( !userp ) return;
+
+	if ( !BER_BVISNULL( &userp->tenantid ) ) {
+		ber_memfree( userp->tenantid.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &userp->uid ) ) {
+		ber_memfree( userp->uid.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &userp->dn ) ) {
+		ber_memfree( userp->dn.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &userp->constraints ) ) {
+		ber_memfree( userp->constraints.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &userp->password ) ) {
+		ber_memfree( userp->password.bv_val );
+	}
+
+	if ( !BER_BVISNULL( &userp->msg ) ) {
+		ber_memfree( userp->msg.bv_val );
+	}
+
+	if ( userp->roles ) ber_bvarray_free( userp->roles );
+
+	if ( userp->role_constraints ) ber_bvarray_free( userp->role_constraints );
+
+	ch_free( userp );
+}
diff --git a/contrib/slapd-modules/rbac/slapo-rbac.5 b/contrib/slapd-modules/rbac/slapo-rbac.5
new file mode 100644
index 0000000..453bcbc
--- /dev/null
+++ b/contrib/slapd-modules/rbac/slapo-rbac.5
@@ -0,0 +1,157 @@
+.TH SLAPO_RBAC 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 1999-2021 SYMAS Corporation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapo\-rbac \- RBAC0 overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.SH DESCRIPTION
+.LP
+The 
+.B slapo-rbac
+overlay
+is an implementation of the ANSI INCITS 359 Role-Based Access Control (RBAC) Core.
+When instantiated, it intercepts, decodes and enforces specific RBAC policies per the Apache Fortress RBAC data formats.
+.P
+The overlay provides a set of extended operations.
+They include session create/delete, checkAccess, addActiveRole, dropActiveRole and sessionRoles.
+.P
+
+.SH CONFIGURATION
+These 
+.B slapd.conf
+configuration options apply to the slapo-rbac overlay. 
+
+.TP
+.B overlay	rbac
+This tag gets applied to the RBAC configuration db (see example below).
+.TP
+.B rbac-default-users-base-dn "ou=People,dc=example,dc=com"
+Points to the container that contains the Apache Fortress users.
+.TP
+.B rbac-default-roles-base-dn "ou=Roles,ou=RBAC,dc=example,dc=com"
+Points to the container that contains the Apache Fortress roles.
+.TP
+.B rbac-default-permissions-base-dn "ou=Permissions,ou=RBAC,dc=example,dc=com"
+Points to the container that contains the Apache Fortress perms.
+.TP
+.B rbac-default-sessions-base-dn "cn=rbac"
+Points to the suffix of the RBAC sessions.
+.TP
+.B rbac-default-audit-base-dn "cn=audit"
+Points to the suffix where the audit records are stored.
+.TP
+.B rbac-admin "cn=manager,dc=example,dc=com"
+A service account that has read access to the entire Apache Fortress DIT.
+.TP
+.B rbac-pwd "{SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU"
+The password according to the service account.
+.TP
+.B rbac-session-admin "cn=manager,cn=rbac"
+The root dn of the RBAC sessions database.
+.TP
+.B rbac-session-admin-pwd {SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
+The password corresponding with the session database.
+.TP
+.RE
+
+.SH EXAMPLES
+.LP
+.RS
+.nf
+
+This overlay requires the
+.B rbac.schema
+loaded and three additional database config sections, one to store rbac
+sessions, second to store the audit records and third to hold the overlay's
+config parameters. They should appear after the existing Apache Fortress db
+config.
+
+.TP 
+1. Session Database: Used to store the RBAC sessions corresponding to a logged in user.
+.B database	mdb
+.B suffix	"cn=rbac"
+.B rootdn	"cn=manager,cn=rbac"
+.B rootpw	{SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
+.B index	rbacSessid  eq
+.B directory	"/var/openldap/rbacsess"
+.B overlay	dds
+.B dds-default-ttl	3600
+.B dds-max-dynamicObjects	100000
+.B dbnosync
+.B checkpoint	64 5
+.PP
+
+.TP
+2. Audit Database: Stores records that track user's activities.
+.B database	mdb
+.B suffix	"cn=audit"
+.B rootdn	"cn=manager,cn=audit"
+.B rootpw	{SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
+.B directory	"/var/openldap/rbacaudit"
+.B dbnosync
+.B checkpoint    64 5
+
+.PP
+
+.TP
+3. Config Database: Stores the parameters needed for this overlay to work.
+.B database	mdb
+.B suffix		"dc=rbac"
+.B rootdn		"cn=manager,dc=rbac"
+.B rootpw		{SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
+.B directory	"/var/openldap/rbacoverlay"
+.B overlay	rbac
+.B rbac-default-tenant-id "example"
+.B rbac-default-users-base-dn "ou=People,dc=example,dc=com"
+.B rbac-default-roles-base-dn "ou=Roles,ou=RBAC,dc=example,dc=com"
+.B rbac-default-permissions-base-dn "ou=Permissions,ou=RBAC,dc=example,dc=com"
+.B rbac-default-sessions-base-dn "cn=rbac"
+.B rbac-default-audit-base-dn "cn=audit"
+.B rbac-admin "cn=manager,dc=example,dc=com"
+.B rbac-pwd "{SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU"
+.B rbac-session-admin "cn=manager,cn=rbac"
+.B rbac-session-admin-pwd {SSHA}pSOV2TpCxj2NMACijkcMko4fGrFopctU
+
+.fi
+.RE
+
+.SH SEE ALSO
+.BR ldap (3),
+.BR slapd.conf (5),
+.BR slapd\-config (5),
+.BR slapo\-chain (5).
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.BR ldap (3),
+.BR slapd.conf (5),
+.BR slapd\-config (5),
+.BR slapo\-chain (5).
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.UR https://profsandhu.com/journals/tissec/ANSI+INCITS+359-2004.pdf
+.UE ANSI INCITS 359 Role-Based Access Control specification
+
+.UR https://github.com/apache/directory-fortress-core/blob/master/README.md
+.UE Apache Fortress README
+
+.UR https://github.com/apache/directory-fortress-core/blob/master/README-QUICKSTART-SLAPD.md
+.UE Apache Fortress OpenLDAP Quickstart 
+
+.UR https://github.com/apache/directory-fortress-core/blob/master/ldap/schema/fortress.schema
+.UE Apache Fortress RBAC schema
+
+.SH BUGS
+This overlay is experimental.
+
+.SH ACKNOWLEDGEMENTS
+.P
+This module was written in 2013 by Ted Cheng of Symas Corporation
+with a little help from Matt Hardin, Howard Chu, Shawn McKinney.
+.P
+.so ../Project
diff --git a/contrib/slapd-modules/rbac/util.c b/contrib/slapd-modules/rbac/util.c
new file mode 100644
index 0000000..11a5e54
--- /dev/null
+++ b/contrib/slapd-modules/rbac/util.c
@@ -0,0 +1,531 @@
+/* util.c - RBAC utility */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/string.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+
+#include "rbac.h"
+
+#define DELIMITER '$'
+
+#define SUNDAY 0x01
+#define MONDAY 0x02
+#define TUESDAY 0x04
+#define WEDNESDAY 0x08
+#define THURSDAY 0x10
+#define FRIDAY 0x20
+#define SATURDAY 0x40
+
+#define ALL_WEEK "all"
+
+void
+rbac_free_constraint( rbac_constraint_t *cp )
+{
+	if ( !cp ) return;
+
+	if ( !BER_BVISNULL( &cp->name ) ) {
+		ch_free( cp->name.bv_val );
+	}
+
+	ch_free( cp );
+}
+
+void
+rbac_free_constraints( rbac_constraint_t *constraints )
+{
+	rbac_constraint_t *cp, *tmp;
+
+	if ( !constraints ) return;
+
+	tmp = constraints;
+	while ( tmp ) {
+		cp = tmp->next;
+		rbac_free_constraint( tmp );
+		tmp = cp;
+	}
+
+	return;
+}
+
+rbac_constraint_t *
+rbac_alloc_constraint()
+{
+	rbac_constraint_t *cp = NULL;
+
+	cp = ch_calloc( 1, sizeof(rbac_constraint_t) );
+	return cp;
+}
+
+static int
+is_well_formed_constraint( struct berval *bv )
+{
+	int rc = LDAP_SUCCESS;
+
+	/* assume well-formed role/user-constraints, for the moment */
+
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "is_well_formed_constraint: "
+				"rbac role/user constraint not well-formed: %s\n",
+				bv->bv_val );
+	}
+
+	return rc;
+}
+
+/* input contains 4 digits, representing time */
+/* in hhmm format */
+static int
+constraint_parse_time( char *input )
+{
+	int btime;
+	char *ptr = input;
+
+	btime = ( *ptr++ - '0' ) * 12;
+	btime += ( *ptr++ - '0' );
+	btime *= 60; /* turning into mins */
+	btime += ( *ptr++ - '0' ) * 10;
+	btime += ( *ptr++ - '0' );
+	btime *= 60; /* turning into secs */
+
+	return btime;
+}
+
+/* input contains 4 digits, representing year */
+/* in yyyy format */
+static int
+constraint_parse_year( char *input )
+{
+	int i;
+	int year = 0;
+	char *ptr = input;
+
+	for ( i = 0; i <= 3; i++, ptr++ ) {
+		year = year * 10 + *ptr - '0';
+	}
+
+	return year;
+}
+
+/* input contains 2 digits, representing month */
+/* in mm format */
+static int
+constraint_parse_month( char *input )
+{
+	int i;
+	int month = 0;
+	char *ptr = input;
+
+	for ( i = 0; i < 2; i++, ptr++ ) {
+		month = month * 10 + *ptr - '0';
+	}
+
+	return month;
+}
+
+/* input contains 2 digits, representing day in month */
+/* in dd format */
+static int
+constraint_parse_day_in_month( char *input )
+{
+	int i;
+	int day_in_month = 0;
+	char *ptr = input;
+
+	for ( i = 0; i < 2; i++, ptr++ ) {
+		day_in_month = day_in_month * 10 + *ptr - '0';
+	}
+
+	return day_in_month;
+}
+
+rbac_constraint_t *
+rbac_bv2constraint( struct berval *bv )
+{
+	rbac_constraint_t *cp = NULL;
+	int rc = LDAP_SUCCESS;
+	char *ptr, *endp = NULL;
+	int len = 0;
+	int year, month, mday;
+
+	if ( !bv || BER_BVISNULL( bv ) ) goto done;
+
+	rc = is_well_formed_constraint( bv );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	cp = rbac_alloc_constraint();
+	if ( !cp ) {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* constraint name */
+	ptr = bv->bv_val;
+	endp = ptr;
+	while ( *endp != DELIMITER ) {
+		endp++;
+		len++;
+	}
+
+	if ( len > 0 ) {
+		cp->name.bv_val = ch_malloc( len + 1 );
+		strncpy( cp->name.bv_val, ptr, len );
+		cp->name.bv_val[len] = '\0';
+		cp->name.bv_len = len;
+	} else {
+		rc = LDAP_OTHER;
+		goto done;
+	}
+
+	/* allowed inactivity period */
+	ptr = endp;
+	endp++;
+	if ( isdigit( *endp ) ) {
+		int secs = 0;
+		while ( isdigit( *endp ) ) {
+			secs = secs * 10 + *endp - '0';
+			endp++;
+		}
+		cp->allowed_inactivity = secs;
+	} else if ( *endp != DELIMITER ) {
+		rc = LDAP_OTHER;
+		goto done;
+	}
+
+	ptr = endp;
+	endp = ptr + 1;
+
+	/* begin time */
+	if ( isdigit( *endp ) ) {
+		cp->begin_time = constraint_parse_time( endp );
+		while ( isdigit( *endp ) )
+			endp++;
+	}
+
+	ptr = endp;
+	while ( *ptr != DELIMITER )
+		ptr++;
+	endp = ptr + 1;
+
+	/* end time */
+	if ( isdigit( *endp ) ) {
+		cp->end_time = constraint_parse_time( endp );
+		while ( isdigit( *endp ) )
+			endp++;
+	}
+
+	ptr = endp;
+	while ( *ptr != DELIMITER )
+		ptr++;
+	endp = ptr + 1;
+
+	/* begin year/month/day_in_month */
+	if ( isdigit( *endp ) ) {
+		lutil_tm tm;
+		year = constraint_parse_year( endp );
+		endp += 4;
+		month = constraint_parse_month( endp );
+		endp += 2;
+		mday = constraint_parse_day_in_month( endp );
+		endp += 2;
+
+		tm.tm_year = year - 1900;
+		tm.tm_mon = month - 1;
+		tm.tm_mday = mday;
+		tm.tm_sec = 0;
+		tm.tm_min = 0;
+		tm.tm_hour = 0;
+
+		lutil_tm2time( &tm, &cp->begin_date );
+	}
+
+	ptr = endp;
+	while ( *ptr != DELIMITER )
+		ptr++;
+	endp = ptr + 1;
+
+	/* end year/month/day_in_month */
+	if ( isdigit( *endp ) ) {
+		lutil_tm tm;
+		year = constraint_parse_year( endp );
+		endp += 4;
+		month = constraint_parse_month( endp );
+		endp += 2;
+		mday = constraint_parse_day_in_month( endp );
+		endp += 2;
+
+		tm.tm_year = year - 1900;
+		tm.tm_mon = month - 1;
+		tm.tm_mday = mday;
+		tm.tm_sec = 0;
+		tm.tm_min = 0;
+		tm.tm_hour = 0;
+
+		lutil_tm2time( &tm, &cp->end_date );
+	}
+
+	ptr = endp;
+	while ( *ptr != DELIMITER )
+		ptr++;
+	endp = ptr + 1;
+
+	/* begin lock year/month/day_in_month */
+	if ( isdigit( *endp ) ) {
+		lutil_tm tm;
+		year = constraint_parse_year( endp );
+		endp += 4;
+		month = constraint_parse_month( endp );
+		endp += 2;
+		mday = constraint_parse_day_in_month( endp );
+		endp += 2;
+
+		tm.tm_year = year - 1900;
+		tm.tm_mon = month - 1;
+		tm.tm_mday = mday;
+		tm.tm_sec = 0;
+		tm.tm_min = 0;
+		tm.tm_hour = 0;
+
+		lutil_tm2time( &tm, &cp->begin_lock_date );
+	}
+
+	ptr = endp;
+	while ( *ptr != DELIMITER )
+		ptr++;
+	endp = ptr + 1;
+
+	/* end lock year/month/day_in_month */
+	if ( isdigit( *endp ) ) {
+		lutil_tm tm;
+
+		year = constraint_parse_year( endp );
+		endp += 4;
+		month = constraint_parse_month( endp );
+		endp += 2;
+		mday = constraint_parse_day_in_month( endp );
+		endp += 2;
+
+		tm.tm_year = year - 1900;
+		tm.tm_mon = month - 1;
+		tm.tm_mday = mday;
+		tm.tm_sec = 0;
+		tm.tm_min = 0;
+		tm.tm_hour = 0;
+
+		lutil_tm2time( &tm, &cp->end_lock_date );
+	}
+
+	ptr = endp;
+	while ( *ptr != DELIMITER )
+		ptr++;
+	endp = ptr + 1;
+
+	/* dayMask */
+
+	/* allow "all" to mean the entire week */
+	if ( strncasecmp( endp, ALL_WEEK, strlen( ALL_WEEK ) ) == 0 ) {
+		cp->day_mask = SUNDAY | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
+				FRIDAY | SATURDAY;
+	}
+
+	while ( *endp && isdigit( *endp ) ) {
+		switch ( *endp - '0' ) {
+			case 1:
+				cp->day_mask |= SUNDAY;
+				break;
+			case 2:
+				cp->day_mask |= MONDAY;
+				break;
+			case 3:
+				cp->day_mask |= TUESDAY;
+				break;
+			case 4:
+				cp->day_mask |= WEDNESDAY;
+				break;
+			case 5:
+				cp->day_mask |= THURSDAY;
+				break;
+			case 6:
+				cp->day_mask |= FRIDAY;
+				break;
+			case 7:
+				cp->day_mask |= SATURDAY;
+				break;
+			default:
+				/* should not be here */
+				rc = LDAP_OTHER;
+				goto done;
+		}
+		endp++;
+	}
+
+done:;
+	if ( rc != LDAP_SUCCESS ) {
+		rbac_free_constraint( cp );
+		cp = NULL;
+	}
+
+	return cp;
+}
+
+static int
+constraint_day_of_week( rbac_constraint_t *cp, int wday )
+{
+	int rc = LDAP_UNWILLING_TO_PERFORM;
+
+	/* assumption: Monday is 1st day of a week */
+	switch ( wday ) {
+		case 1:
+			if ( !(cp->day_mask & MONDAY) ) goto done;
+			break;
+		case 2:
+			if ( !(cp->day_mask & TUESDAY) ) goto done;
+			break;
+		case 3:
+			if ( !(cp->day_mask & WEDNESDAY) ) goto done;
+			break;
+		case 4:
+			if ( !(cp->day_mask & THURSDAY) ) goto done;
+			break;
+		case 5:
+			if ( !(cp->day_mask & FRIDAY) ) goto done;
+			break;
+		case 6:
+			if ( !(cp->day_mask & SATURDAY) ) goto done;
+			break;
+		case 0:
+		case 7:
+			if ( !(cp->day_mask & SUNDAY) ) goto done;
+			break;
+		default:
+			/* should not be here */
+			goto done;
+	}
+
+	rc = LDAP_SUCCESS;
+
+done:;
+	return rc;
+}
+
+int
+rbac_check_time_constraint( rbac_constraint_t *cp )
+{
+	int rc = LDAP_UNWILLING_TO_PERFORM;
+	time_t now;
+	struct tm result, *resultp;
+
+	now = slap_get_time();
+
+	/*
+	 * does slapd support day-of-week (wday)?
+	 * using native routine for now.
+	 * Win32's gmtime call is already thread-safe, to the _r
+	 * decorator is unneeded.
+	 */
+#ifdef _WIN32
+	resultp = gmtime( &now );
+#else
+	resultp = gmtime_r( &now, &result );
+#endif
+	if ( !resultp ) goto done;
+#if 0
+	timestamp.bv_val = timebuf;
+	timestamp.bv_len = sizeof(timebuf);
+	slap_timestamp(&now, &timestamp);
+	lutil_parsetime(timestamp.bv_val, &now_tm);
+	lutil_tm2time(&now_tm, &now_tt);
+#endif
+
+	if ( ( cp->begin_date.tt_sec > 0 && cp->begin_date.tt_sec > now ) ||
+			( cp->end_date.tt_sec > 0 && cp->end_date.tt_sec < now ) ) {
+		/* not within allowed time period */
+		goto done;
+	}
+
+	/* allowed time period during a day */
+	if ( cp->begin_time > 0 && cp->end_time > 0 ) {
+		int timeofday = ( resultp->tm_hour * 60 + resultp->tm_min ) * 60 +
+				resultp->tm_sec;
+		if ( timeofday < cp->begin_time || timeofday > cp->end_time ) {
+			/* not within allowed time period in a day */
+			goto done;
+		}
+	}
+
+	/* allowed day in a week */
+	if ( cp->day_mask > 0 ) {
+		rc = constraint_day_of_week( cp, resultp->tm_wday );
+		if ( rc != LDAP_SUCCESS ) goto done;
+	}
+
+	/* during lock-out period? */
+	if ( ( cp->begin_lock_date.tt_sec > 0 &&
+				 cp->begin_lock_date.tt_sec < now ) &&
+			( cp->end_lock_date.tt_sec > 0 &&
+					cp->end_lock_date.tt_sec > now ) ) {
+		/* within locked out period */
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		goto done;
+	}
+
+	/* passed all tests */
+	rc = LDAP_SUCCESS;
+
+done:;
+	return rc;
+}
+
+rbac_constraint_t *
+rbac_role2constraint( struct berval *role, rbac_constraint_t *role_constraints )
+{
+	rbac_constraint_t *cp = NULL;
+
+	if ( !role_constraints || !role ) goto done;
+
+	cp = role_constraints;
+	while ( cp ) {
+		if ( ber_bvstrcasecmp( role, &cp->name ) == 0 ) {
+			/* found the role constraint */
+			goto done;
+		}
+		cp = cp->next;
+	}
+
+done:;
+	return cp;
+}
+
+void
+rbac_to_lower( struct berval *bv )
+{
+	// convert the berval to lower case:
+	int i;
+	for ( i = 0; i < bv->bv_len; i++ ) {
+		bv->bv_val[i] = tolower( bv->bv_val[i] );
+	}
+}
diff --git a/contrib/slapd-modules/samba4/Makefile b/contrib/slapd-modules/samba4/Makefile
new file mode 100644
index 0000000..f53d130
--- /dev/null
+++ b/contrib/slapd-modules/samba4/Makefile
@@ -0,0 +1,68 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_RDNVAL=SLAPD_MOD_DYNAMIC \
+	-DSLAPD_OVER_PGUID=SLAPD_MOD_DYNAMIC \
+	-DSLAPD_OVER_VERNUM=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = pguid.la rdnval.la vernum.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+pguid.la: pguid.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+rdnval.la: rdnval.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+vernum.la: vernum.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/samba4/README b/contrib/slapd-modules/samba4/README
new file mode 100644
index 0000000..65745b1
--- /dev/null
+++ b/contrib/slapd-modules/samba4/README
@@ -0,0 +1,72 @@
+# $OpenLDAP$
+
+This directory contains slapd overlays specific to samba4 LDAP backend:
+
+	- pguid (not used)
+	- rdnval (under evaluation)
+	- vernum (under evaluation)
+
+
+  - PGUID
+
+This overlay maintains the operational attribute "parentUUID".  It contains
+the entryUUID of the parent entry.  This overlay is not being considered
+right now.
+
+
+  - RDNVAL
+
+This overlay maintains the operational attribute "rdnValue".  It contains
+the value of the entry's RDN.  This attribute is defined by the overlay
+itself as
+
+	( 1.3.6.1.4.1.4203.666.1.58
+		NAME 'rdnValue'
+		DESC 'the value of the naming attributes'
+		SYNTAX '1.3.6.1.4.1.1466.115.121.1.15'
+		EQUALITY caseIgnoreMatch
+		USAGE dSAOperation
+		NO-USER-MODIFICATION )
+
+under OpenLDAP's development OID arc.  This OID is temporary.
+
+To use the overlay, add:
+
+	moduleload <path to>rdnval.so
+	...
+
+	database <whatever>
+	...
+	overlay rdnval
+
+to your slapd configuration file.  An instance is required for each database
+that needs to maintain this attribute.
+
+
+  - VERNUM
+
+This overlay increments a counter any time an attribute is modified.
+It is intended to increment the counter 'msDS-KeyVersionNumber' when
+the attribute 'unicodePwd' is modified.
+ 
+
+These overlays are only set up to be built as a dynamically loaded modules.
+On most platforms, in order for the modules to be usable, all of the 
+library dependencies must also be available as shared libraries.
+
+If you need to build the overlays statically, you will have to move them
+into the slapd/overlays directory and edit the Makefile and overlays.c
+to reference them. 
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+Copyright 2009-2022 The OpenLDAP Foundation.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/samba4/pguid.c b/contrib/slapd-modules/samba4/pguid.c
new file mode 100644
index 0000000..4b0b066
--- /dev/null
+++ b/contrib/slapd-modules/samba4/pguid.c
@@ -0,0 +1,460 @@
+/* pguid.c - Parent GUID value overlay */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 Pierangelo Masarati.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati
+ * for inclusion in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_PGUID
+
+#include <stdio.h>
+
+#include "ac/string.h"
+#include "ac/socket.h"
+
+#include "slap.h"
+#include "slap-config.h"
+
+#include "lutil.h"
+
+/*
+ * Maintain an attribute (parentUUID) that contains the value
+ * of the entryUUID of the parent entry (used by Samba4)
+ */
+
+static AttributeDescription	*ad_parentUUID;
+
+static slap_overinst 		pguid;
+
+static int
+pguid_op_add( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+
+	struct berval pdn, pndn;
+	Entry *e = NULL;
+	Attribute *a;
+	int rc;
+
+	/* don't care about suffix entry */
+	if ( dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[0] ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	dnParent( &op->o_req_dn, &pdn );
+	dnParent( &op->o_req_ndn, &pndn );
+
+	rc = overlay_entry_get_ov( op, &pndn, NULL, slap_schema.si_ad_entryUUID, 0, &e, on );
+	if ( rc != LDAP_SUCCESS || e == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: pguid_op_add: unable to get parent entry DN=\"%s\" (%d)\n",
+			op->o_log_prefix, pdn.bv_val, rc );
+		return SLAP_CB_CONTINUE;
+	}
+
+	a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
+	if ( a == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: pguid_op_add: unable to find entryUUID of parent entry DN=\"%s\" (%d)\n",
+			op->o_log_prefix, pdn.bv_val, rc );
+		
+	} else {
+		assert( a->a_numvals == 1 );
+
+		if ( op->ora_e != NULL ) {
+			attr_merge_one( op->ora_e, ad_parentUUID, &a->a_vals[0], a->a_nvals == a->a_vals ? NULL : &a->a_nvals[0] );
+		
+		} else {
+			Modifications *ml;
+			Modifications *mod;
+
+			assert( op->ora_modlist != NULL );
+
+			for ( ml = op->ora_modlist; ml != NULL; ml = ml->sml_next ) {
+				if ( ml->sml_mod.sm_desc == slap_schema.si_ad_entryUUID ) {
+					break;
+				}
+			}
+
+			if ( ml == NULL ) {
+				ml = op->ora_modlist;
+			}
+
+			mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
+			mod->sml_flags = SLAP_MOD_INTERNAL;
+			mod->sml_op = LDAP_MOD_ADD;
+			mod->sml_desc = ad_parentUUID;
+			mod->sml_type = ad_parentUUID->ad_cname;
+			mod->sml_values = ch_malloc( sizeof( struct berval ) * 2 );
+			mod->sml_nvalues = NULL;
+			mod->sml_numvals = 1;
+
+			ber_dupbv( &mod->sml_values[0], &a->a_vals[0] );
+			BER_BVZERO( &mod->sml_values[1] );
+
+			mod->sml_next = ml->sml_next;
+			ml->sml_next = mod;
+		}
+	}
+
+	if ( e != NULL ) {
+		(void)overlay_entry_release_ov( op, e, 0, on );
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+pguid_op_rename( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+
+	Entry *e = NULL;
+	Attribute *a;
+	int rc;
+
+	if ( op->orr_nnewSup == NULL ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	rc = overlay_entry_get_ov( op, op->orr_nnewSup, NULL, slap_schema.si_ad_entryUUID, 0, &e, on );
+	if ( rc != LDAP_SUCCESS || e == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: pguid_op_rename: unable to get newSuperior entry DN=\"%s\" (%d)\n",
+			op->o_log_prefix, op->orr_newSup->bv_val, rc );
+		return SLAP_CB_CONTINUE;
+	}
+
+	a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
+	if ( a == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: pguid_op_rename: unable to find entryUUID of newSuperior entry DN=\"%s\" (%d)\n",
+			op->o_log_prefix, op->orr_newSup->bv_val, rc );
+		
+	} else {
+		Modifications *mod;
+
+		assert( a->a_numvals == 1 );
+
+		mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
+		mod->sml_flags = SLAP_MOD_INTERNAL;
+		mod->sml_op = LDAP_MOD_REPLACE;
+		mod->sml_desc = ad_parentUUID;
+		mod->sml_type = ad_parentUUID->ad_cname;
+		mod->sml_values = ch_malloc( sizeof( struct berval ) * 2 );
+		mod->sml_nvalues = NULL;
+		mod->sml_numvals = 1;
+
+		ber_dupbv( &mod->sml_values[0], &a->a_vals[0] );
+		BER_BVZERO( &mod->sml_values[1] );
+
+		mod->sml_next = op->orr_modlist;
+		op->orr_modlist = mod;
+	}
+
+	if ( e != NULL ) {
+		(void)overlay_entry_release_ov( op, e, 0, on );
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+pguid_db_init(
+	BackendDB	*be,
+	ConfigReply	*cr)
+{
+	if ( SLAP_ISGLOBALOVERLAY( be ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"pguid_db_init: pguid cannot be used as global overlay.\n" );
+		return 1;
+	}
+
+	if ( be->be_nsuffix == NULL ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"pguid_db_init: database must have suffix\n" );
+		return 1;
+	}
+
+	if ( BER_BVISNULL( &be->be_rootndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"pguid_db_init: missing rootdn for database DN=\"%s\", YMMV\n",
+			be->be_suffix[ 0 ].bv_val );
+	}
+
+	return 0;
+}
+
+typedef struct pguid_mod_t {
+	struct berval ndn;
+	struct berval pguid;
+	struct pguid_mod_t *next;
+} pguid_mod_t;
+
+typedef struct {
+	slap_overinst *on;
+	pguid_mod_t *mods;
+} pguid_repair_cb_t;
+
+static int
+pguid_repair_cb( Operation *op, SlapReply *rs )
+{
+	int rc;
+	pguid_repair_cb_t *pcb = op->o_callback->sc_private;
+	Entry *e = NULL;
+	Attribute *a;
+	struct berval pdn, pndn;
+
+	switch ( rs->sr_type ) {
+	case REP_SEARCH:
+		break;
+
+	case REP_SEARCHREF:
+	case REP_RESULT:
+		return rs->sr_err;
+
+	default:
+		assert( 0 );
+	}
+
+	assert( rs->sr_entry != NULL );
+
+	dnParent( &rs->sr_entry->e_name, &pdn );
+	dnParent( &rs->sr_entry->e_nname, &pndn );
+
+	rc = overlay_entry_get_ov( op, &pndn, NULL, slap_schema.si_ad_entryUUID, 0, &e, pcb->on );
+	if ( rc != LDAP_SUCCESS || e == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: pguid_repair_cb: unable to get parent entry DN=\"%s\" (%d)\n",
+			op->o_log_prefix, pdn.bv_val, rc );
+		return 0;
+	}
+
+	a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
+	if ( a == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: pguid_repair_cb: unable to find entryUUID of parent entry DN=\"%s\" (%d)\n",
+			op->o_log_prefix, pdn.bv_val, rc );
+		
+	} else {
+		ber_len_t len;
+		pguid_mod_t *mod;
+
+		assert( a->a_numvals == 1 );
+
+		len = sizeof( pguid_mod_t ) + rs->sr_entry->e_nname.bv_len + 1 + a->a_vals[0].bv_len + 1;
+		mod = op->o_tmpalloc( len, op->o_tmpmemctx );
+		mod->ndn.bv_len = rs->sr_entry->e_nname.bv_len;
+		mod->ndn.bv_val = (char *)&mod[1];
+		mod->pguid.bv_len = a->a_vals[0].bv_len;
+		mod->pguid.bv_val = (char *)&mod->ndn.bv_val[mod->ndn.bv_len + 1];
+		lutil_strncopy( mod->ndn.bv_val, rs->sr_entry->e_nname.bv_val, rs->sr_entry->e_nname.bv_len );
+		lutil_strncopy( mod->pguid.bv_val, a->a_vals[0].bv_val, a->a_vals[0].bv_len );
+
+		mod->next = pcb->mods;
+		pcb->mods = mod;
+
+		Debug( LDAP_DEBUG_TRACE, "%s: pguid_repair_cb: scheduling entry DN=\"%s\" for repair\n",
+			op->o_log_prefix, rs->sr_entry->e_name.bv_val );
+	}
+
+	if ( e != NULL ) {
+		(void)overlay_entry_release_ov( op, e, 0, pcb->on );
+	}
+
+	return 0;
+}
+
+static int
+pguid_repair( BackendDB *be )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	void *ctx = ldap_pvt_thread_pool_context();
+	Connection conn = { 0 };
+	OperationBuffer opbuf;
+	Operation *op;
+	slap_callback sc = { 0 };
+	pguid_repair_cb_t pcb = { 0 };
+	SlapReply rs = { REP_RESULT };
+	pguid_mod_t *pmod;
+	int nrepaired = 0;
+
+	connection_fake_init2( &conn, &opbuf, ctx, 0 );
+	op = &opbuf.ob_op;
+
+	op->o_tag = LDAP_REQ_SEARCH;
+	memset( &op->oq_search, 0, sizeof( op->oq_search ) );
+
+	op->o_bd = select_backend( &be->be_nsuffix[ 0 ], 0 );
+
+	op->o_req_dn = op->o_bd->be_suffix[ 0 ];
+	op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
+
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+
+	op->ors_scope = LDAP_SCOPE_SUBORDINATE;
+	op->ors_tlimit = SLAP_NO_LIMIT;
+	op->ors_slimit = SLAP_NO_LIMIT;
+	op->ors_attrs = slap_anlist_no_attrs;
+
+	op->ors_filterstr.bv_len = STRLENOF( "(!(=*))" ) + ad_parentUUID->ad_cname.bv_len;
+	op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
+	snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
+		"(!(%s=*))", ad_parentUUID->ad_cname.bv_val );
+
+	op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
+	if ( op->ors_filter == NULL ) {
+		rs.sr_err = LDAP_OTHER;
+		goto done_search;
+	}
+	
+	op->o_callback = &sc;
+	sc.sc_response = pguid_repair_cb;
+	sc.sc_private = &pcb;
+	pcb.on = on;
+
+	(void)op->o_bd->bd_info->bi_op_search( op, &rs );
+
+	op->o_tag = LDAP_REQ_MODIFY;
+	sc.sc_response = slap_null_cb;
+	sc.sc_private = NULL;
+	memset( &op->oq_modify, 0, sizeof( req_modify_s ) );
+
+	for ( pmod = pcb.mods; pmod != NULL; ) {
+		pguid_mod_t *pnext;
+
+		Modifications *mod;
+		SlapReply rs2 = { REP_RESULT };
+
+		mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
+		mod->sml_flags = SLAP_MOD_INTERNAL;
+		mod->sml_op = LDAP_MOD_REPLACE;
+		mod->sml_desc = ad_parentUUID;
+		mod->sml_type = ad_parentUUID->ad_cname;
+		mod->sml_values = ch_malloc( sizeof( struct berval ) * 2 );
+		mod->sml_nvalues = NULL;
+		mod->sml_numvals = 1;
+		mod->sml_next = NULL;
+
+		ber_dupbv( &mod->sml_values[0], &pmod->pguid );
+		BER_BVZERO( &mod->sml_values[1] );
+
+		op->o_req_dn = pmod->ndn;
+		op->o_req_ndn = pmod->ndn;
+
+		op->orm_modlist = mod;
+		op->o_bd->be_modify( op, &rs2 );
+		slap_mods_free( op->orm_modlist, 1 );
+		if ( rs2.sr_err == LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE, "%s: pguid_repair: entry DN=\"%s\" repaired\n",
+				op->o_log_prefix, pmod->ndn.bv_val );
+			nrepaired++;
+
+		} else {
+			Debug( LDAP_DEBUG_ANY, "%s: pguid_repair: entry DN=\"%s\" repair failed (%d)\n",
+				op->o_log_prefix, pmod->ndn.bv_val, rs2.sr_err );
+		}
+
+		pnext = pmod->next;
+		op->o_tmpfree( pmod, op->o_tmpmemctx );
+		pmod = pnext;
+	}
+
+done_search:;
+	op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+	filter_free_x( op, op->ors_filter, 1 );
+
+	Log( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
+		"pguid: repaired=%d\n", nrepaired );
+
+	return rs.sr_err;
+}
+
+/* search all entries without parentUUID; "repair" them */
+static int
+pguid_db_open(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	if ( SLAP_SINGLE_SHADOW( be ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"pguid incompatible with shadow database \"%s\".\n",
+			be->be_suffix[ 0 ].bv_val );
+		return 1;
+	}
+
+	pguid_repair( be );
+
+	return 0;
+}
+
+static struct {
+	char	*desc;
+	AttributeDescription **adp;
+} as[] = {
+	{ "( 1.3.6.1.4.1.4203.666.1.59 "
+		"NAME 'parentUUID' "
+		"DESC 'the value of the entryUUID of the parent' "
+		"EQUALITY UUIDMatch "
+		"ORDERING UUIDOrderingMatch "
+		"SYNTAX 1.3.6.1.1.16.1 "
+		"USAGE dSAOperation "
+		"SINGLE-VALUE "
+		"NO-USER-MODIFICATION " 
+		")",
+		&ad_parentUUID },
+	{ NULL }
+};
+
+int
+pguid_initialize(void)
+{
+	int code, i;
+
+	for ( i = 0; as[ i ].desc != NULL; i++ ) {
+		code = register_at( as[ i ].desc, as[ i ].adp, 0 );
+		if ( code ) {
+			Debug( LDAP_DEBUG_ANY,
+				"pguid_initialize: register_at #%d failed\n",
+				i );
+			return code;
+		}
+
+		/* Allow Manager to set these as needed */
+		if ( is_at_no_user_mod( (*as[ i ].adp)->ad_type ) ) {
+			(*as[ i ].adp)->ad_type->sat_flags |=
+				SLAP_AT_MANAGEABLE;
+		}
+	}
+
+	pguid.on_bi.bi_type = "pguid";
+
+	pguid.on_bi.bi_op_add = pguid_op_add;
+	pguid.on_bi.bi_op_modrdn = pguid_op_rename;
+
+	pguid.on_bi.bi_db_init = pguid_db_init;
+	pguid.on_bi.bi_db_open = pguid_db_open;
+
+	return overlay_register( &pguid );
+}
+
+#if SLAPD_OVER_PGUID == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return pguid_initialize();
+}
+#endif /* SLAPD_OVER_PGUID == SLAPD_MOD_DYNAMIC */
+
+#endif /* SLAPD_OVER_PGUID */
diff --git a/contrib/slapd-modules/samba4/rdnval.c b/contrib/slapd-modules/samba4/rdnval.c
new file mode 100644
index 0000000..dfe0e47
--- /dev/null
+++ b/contrib/slapd-modules/samba4/rdnval.c
@@ -0,0 +1,657 @@
+/* rdnval.c - RDN value overlay */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 Pierangelo Masarati.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati
+ * for inclusion in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_RDNVAL
+
+#include <stdio.h>
+
+#include "ac/string.h"
+#include "ac/socket.h"
+
+#include "slap.h"
+#include "slap-config.h"
+
+#include "lutil.h"
+
+/*
+ * Maintain an attribute (rdnValue) that contains the values of each AVA
+ * that builds up the RDN of an entry.  This is required for interoperation
+ * with Samba4.  It mimics the "name" attribute provided by Active Directory.
+ * The naming attributes must be directoryString-valued, or compatible.
+ * For example, IA5String values are cast into directoryString unless
+ * consisting of the empty string ("").
+ */
+
+static AttributeDescription	*ad_rdnValue;
+static Syntax			*syn_IA5String;
+
+static slap_overinst 		rdnval;
+
+static int
+rdnval_is_valid( AttributeDescription *desc, struct berval *value )
+{
+	if ( desc->ad_type->sat_syntax == slap_schema.si_syn_directoryString ) {
+		return 1;
+	}
+
+	if ( desc->ad_type->sat_syntax == syn_IA5String
+		&& !BER_BVISEMPTY( value ) )
+	{
+		return 1;
+	}
+
+	return 0;
+}
+
+static int
+rdnval_unique_check_cb( Operation *op, SlapReply *rs )
+{
+	if ( rs->sr_type == REP_SEARCH ) {
+		int *p = (int *)op->o_callback->sc_private;
+		(*p)++;
+	}
+
+	return 0;
+}
+
+static int
+rdnval_unique_check( Operation *op, BerVarray vals )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+
+	BackendDB db = *op->o_bd;
+	Operation op2 = *op;
+	SlapReply rs2 = { 0 };
+	int i;
+	BerVarray fvals;
+	char *ptr;
+	int gotit = 0;
+	slap_callback cb = { 0 };
+
+	/* short-circuit attempts to add suffix entry */
+	if ( op->o_tag == LDAP_REQ_ADD
+		&& be_issuffix( op->o_bd, &op->o_req_ndn ) )
+	{
+		return LDAP_SUCCESS;
+	}
+
+	op2.o_bd = &db;
+	op2.o_bd->bd_info = (BackendInfo *)on->on_info;
+	op2.o_tag = LDAP_REQ_SEARCH;
+	op2.o_dn = op->o_bd->be_rootdn;
+	op2.o_ndn = op->o_bd->be_rootndn;
+	op2.o_callback = &cb;
+	cb.sc_response = rdnval_unique_check_cb;
+	cb.sc_private = (void *)&gotit;
+
+	dnParent( &op->o_req_ndn, &op2.o_req_dn );
+	op2.o_req_ndn = op2.o_req_dn;
+
+	op2.ors_limit = NULL;
+	op2.ors_slimit = 1;
+	op2.ors_tlimit = SLAP_NO_LIMIT;
+	op2.ors_attrs = slap_anlist_no_attrs;
+	op2.ors_attrsonly = 1;
+	op2.ors_deref = LDAP_DEREF_NEVER;
+	op2.ors_scope = LDAP_SCOPE_ONELEVEL;
+
+	for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ )
+		/* just count */ ;
+
+	fvals = op->o_tmpcalloc( sizeof( struct berval ), i + 1,
+		op->o_tmpmemctx );
+
+	op2.ors_filterstr.bv_len = 0;
+	if ( i > 1 ) {
+		op2.ors_filterstr.bv_len = STRLENOF( "(&)" );
+	}
+
+	for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
+		ldap_bv2escaped_filter_value_x( &vals[ i ], &fvals[ i ],
+			1, op->o_tmpmemctx );
+		op2.ors_filterstr.bv_len += ad_rdnValue->ad_cname.bv_len
+			+ fvals[ i ].bv_len + STRLENOF( "(=)" );
+	}
+
+	op2.ors_filterstr.bv_val = op->o_tmpalloc( op2.ors_filterstr.bv_len + 1, op->o_tmpmemctx );
+
+	ptr = op2.ors_filterstr.bv_val;
+	if ( i > 1 ) {
+		ptr = lutil_strcopy( ptr, "(&" );
+	}
+	for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
+		*ptr++ = '(';
+		ptr = lutil_strncopy( ptr, ad_rdnValue->ad_cname.bv_val, ad_rdnValue->ad_cname.bv_len );
+		*ptr++ = '=';
+		ptr = lutil_strncopy( ptr, fvals[ i ].bv_val, fvals[ i ].bv_len );
+		*ptr++ = ')';
+	}
+
+	if ( i > 1 ) {
+		*ptr++ = ')';
+	}
+	*ptr = '\0';
+
+	assert( ptr == op2.ors_filterstr.bv_val + op2.ors_filterstr.bv_len );
+	op2.ors_filter = str2filter_x( op, op2.ors_filterstr.bv_val );
+	assert( op2.ors_filter != NULL );
+
+	(void)op2.o_bd->be_search( &op2, &rs2 );
+
+	filter_free_x( op, op2.ors_filter, 1 );
+	op->o_tmpfree( op2.ors_filterstr.bv_val, op->o_tmpmemctx );
+	for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
+		if ( vals[ i ].bv_val != fvals[ i ].bv_val ) {
+			op->o_tmpfree( fvals[ i ].bv_val, op->o_tmpmemctx );
+		}
+	}
+	op->o_tmpfree( fvals, op->o_tmpmemctx );
+
+	if ( rs2.sr_err != LDAP_SUCCESS || gotit > 0 ) {
+		return LDAP_CONSTRAINT_VIOLATION;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+rdnval_rdn2vals(
+	Operation *op,
+	SlapReply *rs,
+	struct berval *dn,
+	struct berval *ndn,
+	BerVarray *valsp,
+	BerVarray *nvalsp,
+	int *numvalsp )
+{
+	LDAPRDN rdn = NULL, nrdn = NULL;
+	int nAVA, i;
+
+	assert( *valsp == NULL );
+	assert( *nvalsp == NULL );
+
+	*numvalsp = 0;
+
+	if ( ldap_bv2rdn_x( dn, &rdn, (char **)&rs->sr_text,
+		LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) )
+	{
+		Debug( LDAP_DEBUG_TRACE,
+			"%s rdnval: can't figure out "
+			"type(s)/value(s) of rdn DN=\"%s\"\n",
+			op->o_log_prefix, dn->bv_val );
+		rs->sr_err = LDAP_INVALID_DN_SYNTAX;
+		rs->sr_text = "unknown type(s) used in RDN";
+
+		goto done;
+	}
+
+	if ( ldap_bv2rdn_x( ndn, &nrdn,
+		(char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) )
+	{
+		Debug( LDAP_DEBUG_TRACE,
+			"%s rdnval: can't figure out "
+			"type(s)/value(s) of normalized rdn DN=\"%s\"\n",
+			op->o_log_prefix, ndn->bv_val );
+		rs->sr_err = LDAP_INVALID_DN_SYNTAX;
+		rs->sr_text = "unknown type(s) used in RDN";
+
+		goto done;
+	}
+
+	for ( nAVA = 0; rdn[ nAVA ]; nAVA++ )
+		/* count'em */ ;
+
+	/* NOTE: we assume rdn and nrdn contain the same AVAs! */
+
+	*valsp = ch_calloc( sizeof( struct berval ), nAVA + 1 );
+	*nvalsp = ch_calloc( sizeof( struct berval ), nAVA + 1 );
+
+	/* Add new attribute values to the entry */
+	for ( i = 0; rdn[ i ]; i++ ) {
+		AttributeDescription	*desc = NULL;
+
+		rs->sr_err = slap_bv2ad( &rdn[ i ]->la_attr,
+			&desc, &rs->sr_text );
+
+		if ( rs->sr_err != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE,
+				"%s rdnval: %s: %s\n",
+				op->o_log_prefix,
+				rs->sr_text, 
+				rdn[ i ]->la_attr.bv_val );
+			goto done;
+		}
+
+		if ( !rdnval_is_valid( desc, &rdn[ i ]->la_value ) ) {
+			Debug( LDAP_DEBUG_TRACE,
+				"%s rdnval: syntax of naming attribute '%s' "
+				"not compatible with directoryString",
+				op->o_log_prefix, rdn[ i ]->la_attr.bv_val );
+			continue;
+		}
+
+		if ( value_find_ex( desc,
+				SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+					SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+				*nvalsp,
+				&nrdn[ i ]->la_value,
+				op->o_tmpmemctx )
+			== LDAP_NO_SUCH_ATTRIBUTE )
+		{
+			ber_dupbv( &(*valsp)[ *numvalsp ], &rdn[ i ]->la_value );
+			ber_dupbv( &(*nvalsp)[ *numvalsp ], &nrdn[ i ]->la_value );
+
+			(*numvalsp)++;
+		}
+	}
+
+	if ( rdnval_unique_check( op, *valsp ) != LDAP_SUCCESS ) {
+		rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
+		rs->sr_text = "rdnValue not unique within siblings";
+		goto done;
+	}
+
+done:;
+	if ( rdn != NULL ) {
+		ldap_rdnfree_x( rdn, op->o_tmpmemctx );
+	}
+
+	if ( nrdn != NULL ) {
+		ldap_rdnfree_x( nrdn, op->o_tmpmemctx );
+	}
+
+	if ( rs->sr_err != LDAP_SUCCESS ) {
+		if ( *valsp != NULL ) {
+			ber_bvarray_free( *valsp );
+			ber_bvarray_free( *nvalsp );
+			*valsp = NULL;
+			*nvalsp = NULL;
+			*numvalsp = 0;
+		}
+	}
+
+	return rs->sr_err;
+}
+
+static int
+rdnval_op_add( Operation *op, SlapReply *rs )
+{
+	Attribute *a, **ap;
+	int numvals = 0;
+	BerVarray vals = NULL, nvals = NULL;
+	int rc;
+
+	/* NOTE: should we accept an entry still in mods format? */
+	assert( op->ora_e != NULL );
+
+	if ( BER_BVISEMPTY( &op->ora_e->e_nname ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	a = attr_find( op->ora_e->e_attrs, ad_rdnValue );
+	if ( a != NULL ) {
+		/* TODO: check consistency? */
+		return SLAP_CB_CONTINUE;
+	}
+
+	rc = rdnval_rdn2vals( op, rs, &op->ora_e->e_name, &op->ora_e->e_nname,
+		&vals, &nvals, &numvals );
+	if ( rc != LDAP_SUCCESS ) {
+		send_ldap_result( op, rs );
+	}
+
+	a = attr_alloc( ad_rdnValue );
+
+	a->a_vals = vals;
+	a->a_nvals = nvals;
+	a->a_numvals = numvals;
+
+	for ( ap = &op->ora_e->e_attrs; *ap != NULL; ap = &(*ap)->a_next )
+		/* goto tail */ ;
+
+	*ap = a;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rdnval_op_rename( Operation *op, SlapReply *rs )
+{
+	Modifications *ml, **mlp;
+	int numvals = 0;
+	BerVarray vals = NULL, nvals = NULL;
+	struct berval old;
+	int rc;
+
+	dnRdn( &op->o_req_ndn, &old );
+	if ( dn_match( &old, &op->orr_nnewrdn ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	rc = rdnval_rdn2vals( op, rs, &op->orr_newrdn, &op->orr_nnewrdn,
+		&vals, &nvals, &numvals );
+	if ( rc != LDAP_SUCCESS ) {
+		send_ldap_result( op, rs );
+	}
+
+	ml = ch_calloc( sizeof( Modifications ), 1 );
+	ml->sml_values = vals;
+	ml->sml_nvalues = nvals;
+
+	ml->sml_numvals = numvals;
+
+	ml->sml_op = LDAP_MOD_REPLACE;
+	ml->sml_flags = SLAP_MOD_INTERNAL;
+	ml->sml_desc = ad_rdnValue;
+	ml->sml_type = ad_rdnValue->ad_cname;
+
+	for ( mlp = &op->orr_modlist; *mlp != NULL; mlp = &(*mlp)->sml_next )
+		/* goto tail */ ;
+
+	*mlp = ml;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+rdnval_db_init(
+	BackendDB	*be,
+	ConfigReply	*cr)
+{
+	if ( SLAP_ISGLOBALOVERLAY( be ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"rdnval_db_init: rdnval cannot be used as global overlay.\n" );
+		return 1;
+	}
+
+	if ( be->be_nsuffix == NULL ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"rdnval_db_init: database must have suffix\n" );
+		return 1;
+	}
+
+	if ( BER_BVISNULL( &be->be_rootndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"rdnval_db_init: missing rootdn for database DN=\"%s\", YMMV\n",
+			be->be_suffix[ 0 ].bv_val );
+	}
+
+	return 0;
+}
+
+typedef struct rdnval_mod_t {
+	struct berval ndn;
+	BerVarray vals;
+	BerVarray nvals;
+	int numvals;
+	struct rdnval_mod_t *next;
+} rdnval_mod_t;
+
+typedef struct {
+	BackendDB *bd;
+	rdnval_mod_t *mods;
+} rdnval_repair_cb_t;
+
+static int
+rdnval_repair_cb( Operation *op, SlapReply *rs )
+{
+	int rc;
+	rdnval_repair_cb_t *rcb = op->o_callback->sc_private;
+	rdnval_mod_t *mod;
+	BerVarray vals = NULL, nvals = NULL;
+	int numvals = 0;
+	ber_len_t len;
+	BackendDB *save_bd = op->o_bd;
+
+	switch ( rs->sr_type ) {
+	case REP_SEARCH:
+		break;
+
+	case REP_SEARCHREF:
+	case REP_RESULT:
+		return rs->sr_err;
+
+	default:
+		assert( 0 );
+	}
+
+	assert( rs->sr_entry != NULL );
+
+	op->o_bd = rcb->bd;
+	rc = rdnval_rdn2vals( op, rs, &rs->sr_entry->e_name, &rs->sr_entry->e_nname,
+		&vals, &nvals, &numvals );
+	op->o_bd = save_bd;
+	if ( rc != LDAP_SUCCESS ) {
+		return 0;
+	}
+
+	len = sizeof( rdnval_mod_t ) + rs->sr_entry->e_nname.bv_len + 1;
+	mod = op->o_tmpalloc( len, op->o_tmpmemctx );
+	mod->ndn.bv_len = rs->sr_entry->e_nname.bv_len;
+	mod->ndn.bv_val = (char *)&mod[1];
+	lutil_strncopy( mod->ndn.bv_val, rs->sr_entry->e_nname.bv_val, rs->sr_entry->e_nname.bv_len );
+	mod->vals = vals;
+	mod->nvals = nvals;
+	mod->numvals = numvals;
+
+	mod->next = rcb->mods;
+	rcb->mods = mod;
+
+	Debug( LDAP_DEBUG_TRACE, "%s: rdnval_repair_cb: scheduling entry DN=\"%s\" for repair\n",
+		op->o_log_prefix, rs->sr_entry->e_name.bv_val );
+
+	return 0;
+}
+
+static int
+rdnval_repair( BackendDB *be )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	void *ctx = ldap_pvt_thread_pool_context();
+	Connection conn = { 0 };
+	OperationBuffer opbuf;
+	Operation *op;
+	BackendDB db;
+	slap_callback sc = { 0 };
+	rdnval_repair_cb_t rcb = { 0 };
+	SlapReply rs = { REP_RESULT };
+	rdnval_mod_t *rmod;
+	int nrepaired = 0;
+
+	connection_fake_init2( &conn, &opbuf, ctx, 0 );
+	op = &opbuf.ob_op;
+
+	op->o_tag = LDAP_REQ_SEARCH;
+	memset( &op->oq_search, 0, sizeof( op->oq_search ) );
+
+	assert( !BER_BVISNULL( &be->be_nsuffix[ 0 ] ) );
+
+	op->o_bd = select_backend( &be->be_nsuffix[ 0 ], 0 );
+	assert( op->o_bd != NULL );
+	assert( op->o_bd->be_nsuffix != NULL );
+
+	op->o_req_dn = op->o_bd->be_suffix[ 0 ];
+	op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
+
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+
+	op->ors_scope = LDAP_SCOPE_SUBTREE;
+	op->ors_tlimit = SLAP_NO_LIMIT;
+	op->ors_slimit = SLAP_NO_LIMIT;
+	op->ors_attrs = slap_anlist_no_attrs;
+
+	op->ors_filterstr.bv_len = STRLENOF( "(!(=*))" ) + ad_rdnValue->ad_cname.bv_len;
+	op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
+	snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
+		"(!(%s=*))", ad_rdnValue->ad_cname.bv_val );
+
+	op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
+	if ( op->ors_filter == NULL ) {
+		rs.sr_err = LDAP_OTHER;
+		goto done_search;
+	}
+	
+	op->o_callback = &sc;
+	sc.sc_response = rdnval_repair_cb;
+	sc.sc_private = &rcb;
+	rcb.bd = &db;
+	db = *be;
+	db.bd_info = (BackendInfo *)on;
+
+	(void)op->o_bd->bd_info->bi_op_search( op, &rs );
+
+	op->o_tag = LDAP_REQ_MODIFY;
+	sc.sc_response = slap_null_cb;
+	sc.sc_private = NULL;
+	memset( &op->oq_modify, 0, sizeof( req_modify_s ) );
+
+	for ( rmod = rcb.mods; rmod != NULL; ) {
+		rdnval_mod_t *rnext;
+
+		Modifications *mod;
+		SlapReply rs2 = { REP_RESULT };
+
+		mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
+		mod->sml_flags = SLAP_MOD_INTERNAL;
+		mod->sml_op = LDAP_MOD_REPLACE;
+		mod->sml_desc = ad_rdnValue;
+		mod->sml_type = ad_rdnValue->ad_cname;
+		mod->sml_values = rmod->vals;
+		mod->sml_nvalues = rmod->nvals;
+		mod->sml_numvals = rmod->numvals;
+		mod->sml_next = NULL;
+
+		op->o_req_dn = rmod->ndn;
+		op->o_req_ndn = rmod->ndn;
+
+		op->orm_modlist = mod;
+
+		op->o_bd->be_modify( op, &rs2 );
+
+		slap_mods_free( op->orm_modlist, 1 );
+		if ( rs2.sr_err == LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE, "%s: rdnval_repair: entry DN=\"%s\" repaired\n",
+				op->o_log_prefix, rmod->ndn.bv_val );
+			nrepaired++;
+
+		} else {
+			Debug( LDAP_DEBUG_ANY, "%s: rdnval_repair: entry DN=\"%s\" repair failed (%d)\n",
+				op->o_log_prefix, rmod->ndn.bv_val, rs2.sr_err );
+		}
+
+		rnext = rmod->next;
+		op->o_tmpfree( rmod, op->o_tmpmemctx );
+		rmod = rnext;
+	}
+
+done_search:;
+	op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+	filter_free_x( op, op->ors_filter, 1 );
+
+	Log( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
+		"rdnval: repaired=%d\n", nrepaired );
+
+	return 0;
+}
+
+/* search all entries without parentUUID; "repair" them */
+static int
+rdnval_db_open(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	if ( SLAP_SINGLE_SHADOW( be ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"rdnval incompatible with shadow database \"%s\".\n",
+			be->be_suffix[ 0 ].bv_val );
+		return 1;
+	}
+
+	return rdnval_repair( be );
+}
+
+static struct {
+	char	*desc;
+	AttributeDescription **adp;
+} as[] = {
+	{ "( 1.3.6.1.4.1.4203.666.1.58 "
+		"NAME 'rdnValue' "
+		"DESC 'the value of the naming attributes' "
+		"SYNTAX '1.3.6.1.4.1.1466.115.121.1.15' "
+		"EQUALITY caseIgnoreMatch "
+		"USAGE dSAOperation "
+		"NO-USER-MODIFICATION " 
+		")",
+		&ad_rdnValue },
+	{ NULL }
+};
+
+int
+rdnval_initialize(void)
+{
+	int code, i;
+
+	for ( i = 0; as[ i ].desc != NULL; i++ ) {
+		code = register_at( as[ i ].desc, as[ i ].adp, 0 );
+		if ( code ) {
+			Debug( LDAP_DEBUG_ANY,
+				"rdnval_initialize: register_at #%d failed\n",
+				i );
+			return code;
+		}
+
+		/* Allow Manager to set these as needed */
+		if ( is_at_no_user_mod( (*as[ i ].adp)->ad_type ) ) {
+			(*as[ i ].adp)->ad_type->sat_flags |=
+				SLAP_AT_MANAGEABLE;
+		}
+	}
+
+	syn_IA5String = syn_find( "1.3.6.1.4.1.1466.115.121.1.26" );
+	if ( syn_IA5String == NULL ) {
+		Debug( LDAP_DEBUG_ANY,
+			"rdnval_initialize: unable to find syntax '1.3.6.1.4.1.1466.115.121.1.26' (IA5String)\n" );
+		return LDAP_OTHER;
+	}
+
+	rdnval.on_bi.bi_type = "rdnval";
+
+	rdnval.on_bi.bi_op_add = rdnval_op_add;
+	rdnval.on_bi.bi_op_modrdn = rdnval_op_rename;
+
+	rdnval.on_bi.bi_db_init = rdnval_db_init;
+	rdnval.on_bi.bi_db_open = rdnval_db_open;
+
+	return overlay_register( &rdnval );
+}
+
+#if SLAPD_OVER_RDNVAL == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return rdnval_initialize();
+}
+#endif /* SLAPD_OVER_RDNVAL == SLAPD_MOD_DYNAMIC */
+
+#endif /* SLAPD_OVER_RDNVAL */
diff --git a/contrib/slapd-modules/samba4/vernum.c b/contrib/slapd-modules/samba4/vernum.c
new file mode 100644
index 0000000..d70dc92
--- /dev/null
+++ b/contrib/slapd-modules/samba4/vernum.c
@@ -0,0 +1,459 @@
+/* vernum.c - RDN value overlay */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2008 Pierangelo Masarati.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati
+ * for inclusion in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_VERNUM
+
+#include <stdio.h>
+
+#include "ac/string.h"
+#include "ac/socket.h"
+
+#include "slap.h"
+#include "slap-config.h"
+
+#include "lutil.h"
+
+/*
+ * Maintain an attribute (e.g. msDS-KeyVersionNumber) that consists
+ * in a counter of modifications of another attribute (e.g. unicodePwd).
+ */
+
+typedef struct vernum_t {
+	AttributeDescription	*vn_attr;
+	AttributeDescription	*vn_vernum;
+} vernum_t;
+
+static AttributeDescription	*ad_msDS_KeyVersionNumber;
+
+static struct berval		val_init = BER_BVC( "0" );
+static slap_overinst 		vernum;
+
+static int
+vernum_op_add( Operation *op, SlapReply *rs )
+{
+	slap_overinst	*on = (slap_overinst *) op->o_bd->bd_info;
+	vernum_t	*vn = (vernum_t *)on->on_bi.bi_private;
+
+	Attribute *a, **ap;
+	int rc;
+
+	/* NOTE: should we accept an entry still in mods format? */
+	assert( op->ora_e != NULL );
+
+	if ( BER_BVISEMPTY( &op->ora_e->e_nname ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	a = attr_find( op->ora_e->e_attrs, vn->vn_attr );
+	if ( a == NULL ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	if ( attr_find( op->ora_e->e_attrs, vn->vn_vernum ) != NULL ) {
+		/* already present - leave it alone */
+		return SLAP_CB_CONTINUE;
+	}
+
+	a = attr_alloc( vn->vn_vernum );
+
+	value_add_one( &a->a_vals, &val_init );
+	a->a_nvals = a->a_vals;
+	a->a_numvals = 1;
+
+	for ( ap = &op->ora_e->e_attrs; *ap != NULL; ap = &(*ap)->a_next )
+		/* goto tail */ ;
+
+	*ap = a;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+vernum_op_modify( Operation *op, SlapReply *rs )
+{
+	slap_overinst	*on = (slap_overinst *) op->o_bd->bd_info;
+	vernum_t	*vn = (vernum_t *)on->on_bi.bi_private;
+
+	Modifications *ml, **mlp;
+	struct berval val = BER_BVC( "1" );
+	int rc;
+	unsigned got = 0;
+
+	for ( ml = op->orm_modlist; ml != NULL; ml = ml->sml_next ) {
+		if ( ml->sml_desc == vn->vn_vernum ) {
+			/* already present - leave it alone
+			 * (or should we increment it anyway?) */
+			return SLAP_CB_CONTINUE;
+		}
+
+		if ( ml->sml_desc == vn->vn_attr ) {
+			got = 1;
+		}
+	}
+
+	if ( !got ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	for ( mlp = &op->orm_modlist; *mlp != NULL; mlp = &(*mlp)->sml_next )
+		/* goto tail */ ;
+
+	/* ITS#6561 */
+#ifdef SLAP_MOD_ADD_IF_NOT_PRESENT
+	/* the initial value is only added if the vernum attr is not present */
+	ml = ch_calloc( sizeof( Modifications ), 1 );
+	ml->sml_values = ch_calloc( sizeof( struct berval ) , 2 );
+	value_add_one( &ml->sml_values, &val_init );
+	ml->sml_nvalues = NULL;
+	ml->sml_numvals = 1;
+	ml->sml_op = SLAP_MOD_ADD_IF_NOT_PRESENT;
+	ml->sml_flags = SLAP_MOD_INTERNAL;
+	ml->sml_desc = vn->vn_vernum;
+	ml->sml_type = vn->vn_vernum->ad_cname;
+
+	*mlp = ml;
+	mlp = &ml->sml_next;
+#endif /* SLAP_MOD_ADD_IF_NOT_PRESENT */
+
+	/* this increments by 1 the vernum attr */
+	ml = ch_calloc( sizeof( Modifications ), 1 );
+	ml->sml_values = ch_calloc( sizeof( struct berval ) , 2 );
+	value_add_one( &ml->sml_values, &val );
+	ml->sml_nvalues = NULL;
+	ml->sml_numvals = 1;
+	ml->sml_op = LDAP_MOD_INCREMENT;
+	ml->sml_flags = SLAP_MOD_INTERNAL;
+	ml->sml_desc = vn->vn_vernum;
+	ml->sml_type = vn->vn_vernum->ad_cname;
+
+	*mlp = ml;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+vernum_db_init(
+	BackendDB	*be,
+	ConfigReply	*cr)
+{
+	slap_overinst	*on = (slap_overinst *) be->bd_info;
+	vernum_t	*vn = NULL;
+
+	if ( SLAP_ISGLOBALOVERLAY( be ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"vernum_db_init: vernum cannot be used as global overlay.\n" );
+		return 1;
+	}
+
+	if ( be->be_nsuffix == NULL ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"vernum_db_init: database must have suffix\n" );
+		return 1;
+	}
+
+	if ( BER_BVISNULL( &be->be_rootndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"vernum_db_init: missing rootdn for database DN=\"%s\", YMMV\n",
+			be->be_suffix[ 0 ].bv_val );
+	}
+
+	vn = (vernum_t *)ch_calloc( 1, sizeof( vernum_t ) );
+
+	on->on_bi.bi_private = (void *)vn;
+
+	return 0;
+}
+
+typedef struct vernum_mod_t {
+	struct berval ndn;
+	struct vernum_mod_t *next;
+} vernum_mod_t;
+
+typedef struct {
+	BackendDB *bd;
+	vernum_mod_t *mods;
+} vernum_repair_cb_t;
+
+static int
+vernum_repair_cb( Operation *op, SlapReply *rs )
+{
+	int rc;
+	vernum_repair_cb_t *rcb = op->o_callback->sc_private;
+	vernum_mod_t *mod;
+	ber_len_t len;
+	BackendDB *save_bd = op->o_bd;
+
+	switch ( rs->sr_type ) {
+	case REP_SEARCH:
+		break;
+
+	case REP_SEARCHREF:
+	case REP_RESULT:
+		return rs->sr_err;
+
+	default:
+		assert( 0 );
+	}
+
+	assert( rs->sr_entry != NULL );
+
+	len = sizeof( vernum_mod_t ) + rs->sr_entry->e_nname.bv_len + 1;
+	mod = op->o_tmpalloc( len, op->o_tmpmemctx );
+	mod->ndn.bv_len = rs->sr_entry->e_nname.bv_len;
+	mod->ndn.bv_val = (char *)&mod[1];
+	lutil_strncopy( mod->ndn.bv_val, rs->sr_entry->e_nname.bv_val, rs->sr_entry->e_nname.bv_len );
+
+	mod->next = rcb->mods;
+	rcb->mods = mod;
+
+	Debug( LDAP_DEBUG_TRACE, "%s: vernum_repair_cb: scheduling entry DN=\"%s\" for repair\n",
+		op->o_log_prefix, rs->sr_entry->e_name.bv_val );
+
+	return 0;
+}
+
+static int
+vernum_repair( BackendDB *be )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	vernum_t *vn = (vernum_t *)on->on_bi.bi_private;
+	void *ctx = ldap_pvt_thread_pool_context();
+	Connection conn = { 0 };
+	OperationBuffer opbuf;
+	Operation *op;
+	BackendDB db;
+	slap_callback sc = { 0 };
+	vernum_repair_cb_t rcb = { 0 };
+	SlapReply rs = { REP_RESULT };
+	vernum_mod_t *rmod;
+	int nrepaired = 0;
+
+	connection_fake_init2( &conn, &opbuf, ctx, 0 );
+	op = &opbuf.ob_op;
+
+	op->o_tag = LDAP_REQ_SEARCH;
+	memset( &op->oq_search, 0, sizeof( op->oq_search ) );
+
+	assert( !BER_BVISNULL( &be->be_nsuffix[ 0 ] ) );
+
+	op->o_bd = select_backend( &be->be_nsuffix[ 0 ], 0 );
+	assert( op->o_bd != NULL );
+	assert( op->o_bd->be_nsuffix != NULL );
+
+	op->o_req_dn = op->o_bd->be_suffix[ 0 ];
+	op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
+
+	op->o_dn = op->o_bd->be_rootdn;
+	op->o_ndn = op->o_bd->be_rootndn;
+
+	op->ors_scope = LDAP_SCOPE_SUBTREE;
+	op->ors_tlimit = SLAP_NO_LIMIT;
+	op->ors_slimit = SLAP_NO_LIMIT;
+	op->ors_attrs = slap_anlist_no_attrs;
+
+	op->ors_filterstr.bv_len = STRLENOF( "(&(=*)(!(=*)))" )
+		+ vn->vn_attr->ad_cname.bv_len
+		+ vn->vn_vernum->ad_cname.bv_len;
+	op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
+	snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
+		"(&(%s=*)(!(%s=*)))",
+		vn->vn_attr->ad_cname.bv_val,
+		vn->vn_vernum->ad_cname.bv_val );
+
+	op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
+	if ( op->ors_filter == NULL ) {
+		rs.sr_err = LDAP_OTHER;
+		goto done_search;
+	}
+	
+	op->o_callback = &sc;
+	sc.sc_response = vernum_repair_cb;
+	sc.sc_private = &rcb;
+	rcb.bd = &db;
+	db = *be;
+	db.bd_info = (BackendInfo *)on;
+
+	(void)op->o_bd->bd_info->bi_op_search( op, &rs );
+
+	op->o_tag = LDAP_REQ_MODIFY;
+	sc.sc_response = slap_null_cb;
+	sc.sc_private = NULL;
+	memset( &op->oq_modify, 0, sizeof( req_modify_s ) );
+
+	for ( rmod = rcb.mods; rmod != NULL; ) {
+		vernum_mod_t *rnext;
+		Modifications mod;
+		struct berval vals[2] = { BER_BVNULL };
+		SlapReply rs2 = { REP_RESULT };
+
+		mod.sml_flags = SLAP_MOD_INTERNAL;
+		mod.sml_op = LDAP_MOD_REPLACE;
+		mod.sml_desc = vn->vn_vernum;
+		mod.sml_type = vn->vn_vernum->ad_cname;
+		mod.sml_values = vals;
+		mod.sml_values[0] = val_init;
+		mod.sml_nvalues = NULL;
+		mod.sml_numvals = 1;
+		mod.sml_next = NULL;
+
+		op->o_req_dn = rmod->ndn;
+		op->o_req_ndn = rmod->ndn;
+
+		op->orm_modlist = &mod;
+
+		op->o_bd->be_modify( op, &rs2 );
+
+		slap_mods_free( op->orm_modlist->sml_next, 1 );
+		if ( rs2.sr_err == LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE, "%s: vernum_repair: entry DN=\"%s\" repaired\n",
+				op->o_log_prefix, rmod->ndn.bv_val );
+			nrepaired++;
+
+		} else {
+			Debug( LDAP_DEBUG_ANY, "%s: vernum_repair: entry DN=\"%s\" repair failed (%d)\n",
+				op->o_log_prefix, rmod->ndn.bv_val, rs2.sr_err );
+		}
+
+		rnext = rmod->next;
+		op->o_tmpfree( rmod, op->o_tmpmemctx );
+		rmod = rnext;
+	}
+
+done_search:;
+	op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+	filter_free_x( op, op->ors_filter, 1 );
+
+	Log( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
+		"vernum: repaired=%d\n", nrepaired );
+
+	return 0;
+}
+
+static int
+vernum_db_open(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	vernum_t *vn = (vernum_t *)on->on_bi.bi_private;
+
+	if ( SLAP_SINGLE_SHADOW( be ) ) {
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
+			"vernum incompatible with shadow database \"%s\".\n",
+			be->be_suffix[ 0 ].bv_val );
+		return 1;
+	}
+
+	/* default: unicodePwd & msDS-KeyVersionNumber */
+	if ( vn->vn_attr == NULL ) {
+		const char *text = NULL;
+		int rc;
+
+		rc = slap_str2ad( "unicodePwd", &vn->vn_attr, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY, "vernum: unable to find attribute 'unicodePwd' (%d: %s)\n",
+				rc, text );
+			return 1;
+		}
+
+		vn->vn_vernum = ad_msDS_KeyVersionNumber;
+	}
+
+	return vernum_repair( be );
+}
+
+static int
+vernum_db_destroy(
+	BackendDB	*be,
+	ConfigReply	*cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	vernum_t *vn = (vernum_t *)on->on_bi.bi_private;
+
+	if ( vn ) {
+		ch_free( vn );
+		on->on_bi.bi_private = NULL;
+	}
+
+	return 0;
+}
+
+static struct {
+	char	*desc;
+	AttributeDescription **adp;
+} as[] = {
+	{ "( 1.2.840.113556.1.4.1782 "
+		"NAME 'msDS-KeyVersionNumber' "
+		"DESC 'in the original specification the syntax is 2.5.5.9' "
+		"SYNTAX '1.3.6.1.4.1.1466.115.121.1.27' "
+		"EQUALITY integerMatch "
+		"SINGLE-VALUE "
+		"USAGE dSAOperation "
+		"NO-USER-MODIFICATION " 
+		")",
+		&ad_msDS_KeyVersionNumber },
+	{ NULL }
+};
+
+int
+vernum_initialize(void)
+{
+	int code, i;
+
+	for ( i = 0; as[ i ].desc != NULL; i++ ) {
+		code = register_at( as[ i ].desc, as[ i ].adp, 0 );
+		if ( code ) {
+			Debug( LDAP_DEBUG_ANY,
+				"vernum_initialize: register_at #%d failed\n",
+				i );
+			return code;
+		}
+
+		/* Allow Manager to set these as needed */
+		if ( is_at_no_user_mod( (*as[ i ].adp)->ad_type ) ) {
+			(*as[ i ].adp)->ad_type->sat_flags |=
+				SLAP_AT_MANAGEABLE;
+		}
+	}
+
+	vernum.on_bi.bi_type = "vernum";
+
+	vernum.on_bi.bi_op_add = vernum_op_add;
+	vernum.on_bi.bi_op_modify = vernum_op_modify;
+
+	vernum.on_bi.bi_db_init = vernum_db_init;
+	vernum.on_bi.bi_db_open = vernum_db_open;
+	vernum.on_bi.bi_db_destroy = vernum_db_destroy;
+
+	return overlay_register( &vernum );
+}
+
+#if SLAPD_OVER_VERNUM == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return vernum_initialize();
+}
+#endif /* SLAPD_OVER_VERNUM == SLAPD_MOD_DYNAMIC */
+
+#endif /* SLAPD_OVER_VERNUM */
diff --git a/contrib/slapd-modules/smbk5pwd/Makefile b/contrib/slapd-modules/smbk5pwd/Makefile
new file mode 100644
index 0000000..a1c2c8e
--- /dev/null
+++ b/contrib/slapd-modules/smbk5pwd/Makefile
@@ -0,0 +1,77 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+SSL_INC = 
+SSL_LIB = -lcrypto
+
+HEIMDAL_INC = -I/usr/heimdal/include
+HEIMDAL_LIB = -L/usr/heimdal/lib -lkrb5 -lkadm5srv
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+# Omit DO_KRB5, DO_SAMBA or DO_SHADOW if you don't want to support it.
+DEFS = -DDO_KRB5 -DDO_SAMBA -DDO_SHADOW
+INCS = $(LDAP_INC) $(HEIMDAL_INC) $(SSL_INC)
+LIBS = $(LDAP_LIB) $(HEIMDAL_LIB) $(SSL_LIB)
+
+PROGRAMS = smbk5pwd.la
+MANPAGES = slapo-smbk5pwd.5
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+smbk5pwd.la:	smbk5pwd.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/smbk5pwd/README b/contrib/slapd-modules/smbk5pwd/README
new file mode 100644
index 0000000..2f02195
--- /dev/null
+++ b/contrib/slapd-modules/smbk5pwd/README
@@ -0,0 +1,94 @@
+This directory contains a slapd overlay, smbk5pwd, that extends the
+PasswordModify Extended Operation to update Kerberos keys and Samba
+password hashes for an LDAP user.
+
+The Kerberos support is written for Heimdal using its hdb-ldap backend.
+If a PasswordModify is performed on an entry that has the krb5KDCEntry
+objectclass, then the krb5Key and krb5KeyVersionNumber will be updated
+using the new password in the PasswordModify request. Additionally, a
+new "{K5KEY}" password hash mechanism is provided. For krb5KDCEntries that
+have this hash specifier in their userPassword attribute, Simple Binds
+will be checked against the Kerberos keys of the Entry. No data is
+needed after the "{K5KEY}" hash specifier in the userPassword, it is
+looked up from the Entry directly.
+
+The Samba support is written using the Samba 3.0 LDAP schema. If a
+PasswordModify is performed on an entry that has the sambaSamAccount
+objectclass, then the sambaNTPassword and sambaPwdLastSet attributes
+will be updated accordingly.
+
+To use the overlay, add:
+
+	include <path to>/krb5-kdc.schema
+	include <path to>/samba.schema
+
+	moduleload <path to>smbk5pwd.so
+	...
+
+	database mdb
+	...
+	overlay smbk5pwd
+
+to your slapd configuration file. (You should obtain the necessary schema
+files from the Heimdal and/or Samba distributions. At this time, there
+are several known errors in these schema files that you will have to
+correct before they will load in slapd.  As of Samba 3.0 the schema looks
+fine as shipped.)
+
+All modules compiled in (i.e. krb5 and samba) are enabled; the statement
+
+	smbk5pwd-enable		<module>
+
+can be used to enable only the desired one(s); legal values for <module>
+are "krb5", "samba" and "shadow", if they are respectively enabled by defining
+DO_KRB5, DO_SAMBA and DO_SHADOW.
+
+The samba module also supports the
+
+	smbk5pwd-must-change	<seconds>
+
+which sets the "sambaPwdMustChange" attribute accordingly to force passwd
+expiry.  A value of 0 disables this feature.
+
+The overlay now supports table-driven configuration, and thus can be run-time
+loaded and configured via back-config.  The layout of the entry is
+
+	# {0}smbk5pwd, {1}bdb, config
+	dn: olcOverlay={0}smbk5pwd,olcDatabase={1}bdb,cn=config
+	objectClass: olcOverlayConfig
+	objectClass: olcSmbK5PwdConfig
+	olcOverlay: {0}smbk5pwd
+	olcSmbK5PwdEnable: krb5
+	olcSmbK5PwdEnable: samba
+	olcSmbK5PwdMustChange: 2592000
+
+which enables both krb5 and samba modules with a password expiry time
+of 30 days.
+
+The provided Makefile builds both Kerberos and Samba support by default.
+You must edit the Makefile to insure that the correct include and library
+paths are used. You can change the DEFS macro if you only want one or the
+other of Kerberos or Samba support.
+
+This overlay is only set up to be built as a dynamically loaded module.
+On most platforms, in order for the module to be usable, all of the 
+library dependencies must also be available as shared libraries.
+
+If you need to build the overlay statically, you will have to move it into the
+slapd/overlays directory and edit the Makefile and overlays.c to reference
+it. You will also have to define SLAPD_OVER_SMBK5PWD to SLAPD_MOD_STATIC,
+and add the relevant libraries to the main slapd link command.
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+Copyright 2004-2022 The OpenLDAP Foundation.
+Portions Copyright 2004-2005 Howard Chu, Symas Corp. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/smbk5pwd/slapo-smbk5pwd.5 b/contrib/slapd-modules/smbk5pwd/slapo-smbk5pwd.5
new file mode 100644
index 0000000..c9a0162
--- /dev/null
+++ b/contrib/slapd-modules/smbk5pwd/slapo-smbk5pwd.5
@@ -0,0 +1,177 @@
+.TH SLAPO-SMBK5PWD 5 "RELEASEDATE" "OpenLDAP LDVERSION"
+.\" Copyright 2015-2022 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
+.SH NAME
+slapo-smbk5pwd \- Samba & Kerberos password sync overlay to slapd
+.SH SYNOPSIS
+ETCDIR/slapd.conf
+.RS
+.LP
+include
+.B "<path to>/krb5-kdc.schema"
+.LP
+include
+.B "<path to>/samba.schema"
+.LP
+moduleload
+.B smbk5pwd.so
+.LP
+ ...
+.LP
+database mdb
+.LP
+ ...
+.LP
+overlay
+.B smbk5pwd
+.RE
+
+.SH DESCRIPTION
+.LP
+The
+.B smbk5pwd
+overlay to
+.BR slapd (8)
+overloads the Password Modify Extended Operation (RFC 3062) to update
+Kerberos keys and Samba password hashes for an LDAP user, as well as
+updating password change related attributes for Kerberos, Samba and/or
+UNIX user accounts.
+.LP
+The Samba support is written using the Samba 3.0 LDAP schema;
+Kerberos support is written for Heimdal using its hdb-ldap backend.
+.LP
+Additionally, a new
+.B {K5KEY}
+password hash mechanism is provided.
+For
+.B krb5KDCEntry
+objects that have this scheme specifier in their
+.I userPassword
+attribute, Simple Binds will be checked against the Kerberos keys of the entry.
+No data is needed after the
+.B {K5KEY}
+scheme specifier in the
+.IR userPassword ,
+it is looked up from the entry directly.
+
+.SH CONFIGURATION
+The
+.B smbk5pwd
+overlay supports the following
+.B slapd.conf
+configuration options, which should appear after the
+.B overlay
+directive:
+.TP
+.BI smbk5pwd-enable " <module>"
+can be used to enable only the desired modules.
+Legal values for
+.I <module>
+are
+.LP
+.RS
+.TP
+.B krb5
+If the user has the
+.B krb5KDCEntry
+objectclass, update the
+.B krb5Key
+and
+.B krb5KeyVersionNumber
+attributes using the new password in the Password Modify operation,
+provided the Kerberos account is not expired.
+Exiration is determined by evaluating the
+.B krb5ValidEnd
+attribute.
+.TP
+.B samba
+If the user is a
+.B sambaSamAccount
+object, synchronize the
+.B sambaNTPassword
+to the password entered in the Password Modify operation, and update
+.B sambaPwdLastSet
+accordingly.
+.TP
+.B shadow
+Update the attribute
+.BR shadowLastChange ,
+if the entry has the objectclass
+.BR shadowAccount .
+.LP
+By default all modules compiled in are enabled.
+Setting the config statement restricts the enabled modules to the ones
+explicitly mentioned.
+.RE
+.TP
+.BI smbk5pwd-can-change " <seconds>"
+If the
+.B samba
+module is enabled and the user is a
+.BR sambaSamAccount ,
+update the attribute
+.B sambaPwdCanChange
+to point
+.I <seconds>
+into the future, essentially denying any Samba password change until then.
+A value of
+.B 0
+disables this feature.
+.TP
+.BI smbk5pwd-must-change " <seconds>"
+If the
+.B samba
+module is enabled and the user is a
+.BR sambaSamAccount ,
+update the attribute
+.B sambaPwdMustChange
+to point
+.I <seconds>
+into the future, essentially setting the Samba password expiration time.
+A value of
+.B 0
+disables this feature.
+.LP
+Alternatively, the overlay supports table-driven configuration,
+and thus can be run-time loaded and configured via back-config.
+
+.SH EXAMPLE
+The layout of a slapd.d based, table-driven configuration entry looks like:
+.LP
+.EX
+        # {0}smbk5pwd, {1}mdb, config
+        dn: olcOverlay={0}smbk5pwd,olcDatabase={1}mdb,cn=config
+        objectClass: olcOverlayConfig
+        objectClass: olcSmbK5PwdConfig
+        olcOverlay: {0}smbk5pwd
+        olcSmbK5PwdEnable: krb5
+        olcSmbK5PwdEnable: samba
+        olcSmbK5PwdMustChange: 2592000
+.EE
+.LP
+which enables both
+.B krb5
+and
+.B samba
+modules with a Samba password expiration time of 30 days (=
+.B 2592000
+seconds).
+
+.SH SEE ALSO
+.BR slapd.conf (5),
+.BR ldappasswd (1),
+.BR ldap (3),
+.LP
+"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
+.LP
+
+.SH ACKNOWLEDGEMENTS
+This manual page has been written by Peter Marschall based on the
+module's README file written by Howard Chu.
+.LP
+.B OpenLDAP
+is developed and maintained by The OpenLDAP Project (http://www.openldap.org/).
+.B OpenLDAP
+is derived from University of Michigan LDAP 3.3 Release.
+
diff --git a/contrib/slapd-modules/smbk5pwd/smbk5pwd.c b/contrib/slapd-modules/smbk5pwd/smbk5pwd.c
new file mode 100644
index 0000000..642140d
--- /dev/null
+++ b/contrib/slapd-modules/smbk5pwd/smbk5pwd.c
@@ -0,0 +1,1084 @@
+/* smbk5pwd.c - Overlay for managing Samba and Heimdal passwords */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2004-2005 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * Support for table-driven configuration added by Pierangelo Masarati.
+ * Support for sambaPwdMustChange and sambaPwdCanChange added by Marco D'Ettorre.
+ * Support for shadowLastChange added by SATOH Fumiyasu @ OSS Technology, Inc.
+ */
+
+#include <portable.h>
+
+#ifndef SLAPD_OVER_SMBK5PWD
+#define SLAPD_OVER_SMBK5PWD SLAPD_MOD_DYNAMIC
+#endif
+
+#ifdef SLAPD_OVER_SMBK5PWD
+
+#include <slap.h>
+#include <ac/errno.h>
+#include <ac/string.h>
+
+#include "slap-config.h"
+
+#ifdef DO_KRB5
+#include <lber.h>
+#include <lber_pvt.h>
+#include <lutil.h>
+
+/* make ASN1_MALLOC_ENCODE use our allocator */
+#define malloc	ch_malloc
+
+#include <krb5.h>
+#include <kadm5/admin.h>
+#include <hdb.h>
+
+#ifndef HDB_INTERFACE_VERSION
+#define	HDB_MASTER_KEY_SET	master_key_set
+#else
+#define	HDB_MASTER_KEY_SET	hdb_master_key_set
+#endif
+
+static krb5_context context;
+static void *kadm_context;
+static kadm5_config_params conf;
+static HDB *db;
+
+static AttributeDescription *ad_krb5Key;
+static AttributeDescription *ad_krb5KeyVersionNumber;
+static AttributeDescription *ad_krb5PrincipalName;
+static AttributeDescription *ad_krb5ValidEnd;
+static ObjectClass *oc_krb5KDCEntry;
+#endif
+
+#ifdef DO_SAMBA
+#ifdef HAVE_GNUTLS
+#include <nettle/md4.h>
+#elif HAVE_OPENSSL
+#include <openssl/md4.h>
+#else
+#error Unsupported crypto backend.
+#endif
+#include "ldap_utf8.h"
+
+static AttributeDescription *ad_sambaNTPassword;
+static AttributeDescription *ad_sambaPwdLastSet;
+static AttributeDescription *ad_sambaPwdMustChange;
+static AttributeDescription *ad_sambaPwdCanChange;
+static ObjectClass *oc_sambaSamAccount;
+#endif
+
+#ifdef DO_SHADOW
+static AttributeDescription *ad_shadowLastChange;
+static ObjectClass *oc_shadowAccount;
+#endif
+
+/* Per-instance configuration information */
+typedef struct smbk5pwd_t {
+	unsigned	mode;
+#define	SMBK5PWD_F_KRB5		(0x1U)
+#define	SMBK5PWD_F_SAMBA	(0x2U)
+#define	SMBK5PWD_F_SHADOW	(0x4U)
+
+#define SMBK5PWD_DO_KRB5(pi)	((pi)->mode & SMBK5PWD_F_KRB5)
+#define SMBK5PWD_DO_SAMBA(pi)	((pi)->mode & SMBK5PWD_F_SAMBA)
+#define SMBK5PWD_DO_SHADOW(pi)	((pi)->mode & SMBK5PWD_F_SHADOW)
+
+#ifdef DO_KRB5
+	/* nothing yet */
+#endif
+
+#ifdef DO_SAMBA
+	/* How many seconds before forcing a password change? */
+	time_t	smb_must_change;
+	/* How many seconds after allowing a password change? */
+	time_t  smb_can_change;
+#endif
+
+#ifdef DO_SHADOW
+	/* nothing yet */
+#endif
+} smbk5pwd_t;
+
+static const unsigned SMBK5PWD_F_ALL	=
+	0
+#ifdef DO_KRB5
+	| SMBK5PWD_F_KRB5
+#endif
+#ifdef DO_SAMBA
+	| SMBK5PWD_F_SAMBA
+#endif
+#ifdef DO_SHADOW
+	| SMBK5PWD_F_SHADOW
+#endif
+;
+
+static int smbk5pwd_modules_init( smbk5pwd_t *pi );
+
+#ifdef DO_SAMBA
+static const char hex[] = "0123456789abcdef";
+
+#define MAX_PWLEN 256
+#define	HASHLEN	16
+
+static void hexify(
+	const char in[HASHLEN],
+	struct berval *out
+)
+{
+	int i;
+	char *a;
+	unsigned char *b;
+
+	out->bv_val = ch_malloc(HASHLEN*2 + 1);
+	out->bv_len = HASHLEN*2;
+
+	a = out->bv_val;
+	b = (unsigned char *)in;
+	for (i=0; i<HASHLEN; i++) {
+		*a++ = hex[*b >> 4];
+		*a++ = hex[*b++ & 0x0f];
+	}
+	*a++ = '\0';
+}
+
+static void nthash(
+	struct berval *passwd,
+	struct berval *hash
+)
+{
+	/* Windows currently only allows 14 character passwords, but
+	 * may support up to 256 in the future. We assume this means
+	 * 256 UCS2 characters, not 256 bytes...
+	 */
+	char hbuf[HASHLEN];
+#ifdef HAVE_OPENSSL
+	MD4_CTX ctx;
+#elif defined(HAVE_GNUTLS)
+	struct md4_ctx ctx;
+#endif
+
+	if (passwd->bv_len > MAX_PWLEN*2)
+		passwd->bv_len = MAX_PWLEN*2;
+
+#ifdef HAVE_OPENSSL
+	MD4_Init( &ctx );
+	MD4_Update( &ctx, passwd->bv_val, passwd->bv_len );
+	MD4_Final( (unsigned char *)hbuf, &ctx );
+#elif defined(HAVE_GNUTLS)
+	md4_init( &ctx );
+	md4_update( &ctx, passwd->bv_len, (unsigned char *)passwd->bv_val );
+	md4_digest( &ctx, sizeof(hbuf), (unsigned char *)hbuf );
+#endif
+
+	hexify( hbuf, hash );
+}
+#endif /* DO_SAMBA */
+
+#ifdef DO_KRB5
+
+static int smbk5pwd_op_cleanup(
+	Operation *op,
+	SlapReply *rs )
+{
+	slap_callback *cb;
+
+	/* clear out the current key */
+	ldap_pvt_thread_pool_setkey( op->o_threadctx, smbk5pwd_op_cleanup,
+		NULL, 0, NULL, NULL );
+
+	/* free the callback */
+	cb = op->o_callback;
+	op->o_callback = cb->sc_next;
+	op->o_tmpfree( cb, op->o_tmpmemctx );
+	return 0;
+}
+
+static int smbk5pwd_op_bind(
+	Operation *op,
+	SlapReply *rs )
+{
+	/* If this is a simple Bind, stash the Op pointer so our chk
+	 * function can find it. Set a cleanup callback to clear it
+	 * out when the Bind completes.
+	 */
+	if ( op->oq_bind.rb_method == LDAP_AUTH_SIMPLE ) {
+		slap_callback *cb;
+		ldap_pvt_thread_pool_setkey( op->o_threadctx,
+			smbk5pwd_op_cleanup, op, 0, NULL, NULL );
+		cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
+		cb->sc_cleanup = smbk5pwd_op_cleanup;
+		cb->sc_next = op->o_callback;
+		op->o_callback = cb;
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static LUTIL_PASSWD_CHK_FUNC k5key_chk;
+static LUTIL_PASSWD_HASH_FUNC k5key_hash;
+static const struct berval k5key_scheme = BER_BVC("{K5KEY}");
+
+/* This password scheme stores no data in the userPassword attribute
+ * other than the scheme name. It assumes the invoking entry is a
+ * krb5KDCentry and compares the passed-in credentials against the
+ * krb5Key attribute. The krb5Key may be multi-valued, but they are
+ * simply multiple keytypes generated from the same input string, so
+ * only the first value needs to be compared here.
+ *
+ * Since the lutil_passwd API doesn't pass the Entry object in, we
+ * have to fetch it ourselves in order to get access to the other
+ * attributes. We accomplish this with the help of the overlay's Bind
+ * function, which stores the current Operation pointer in thread-specific
+ * storage so we can retrieve it here. The Operation provides all
+ * the necessary context for us to get Entry from the database.
+ */
+static int k5key_chk(
+	const struct berval *sc,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text )
+{
+	void *ctx, *op_tmp;
+	Operation *op;
+	int rc;
+	Entry *e;
+	Attribute *a;
+	krb5_error_code ret;
+	krb5_keyblock key;
+	krb5_salt salt;
+	hdb_entry ent;
+
+	/* Find our thread context, find our Operation */
+	ctx = ldap_pvt_thread_pool_context();
+
+	if ( ldap_pvt_thread_pool_getkey( ctx, smbk5pwd_op_cleanup, &op_tmp, NULL )
+		 || !op_tmp )
+		return LUTIL_PASSWD_ERR;
+	op = op_tmp;
+
+	rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
+	if ( rc != LDAP_SUCCESS ) return LUTIL_PASSWD_ERR;
+
+	rc = LUTIL_PASSWD_ERR;
+	do {
+		size_t l;
+		Key ekey = {0};
+
+		a = attr_find( e->e_attrs, ad_krb5PrincipalName );
+		if (!a ) break;
+
+		memset( &ent, 0, sizeof(ent) );
+		ret = krb5_parse_name(context, a->a_vals[0].bv_val, &ent.principal);
+		if ( ret ) break;
+
+		a = attr_find( e->e_attrs, ad_krb5ValidEnd );
+		if (a) {
+			struct lutil_tm tm;
+			struct lutil_timet tt;
+			if ( lutil_parsetime( a->a_vals[0].bv_val, &tm ) == 0 &&
+				lutil_tm2time( &tm, &tt ) == 0 && tt.tt_sec < op->o_time ) {
+				/* Account is expired */
+				rc = LUTIL_PASSWD_ERR;
+				break;
+			}
+		}
+
+		krb5_get_pw_salt( context, ent.principal, &salt );
+		krb5_free_principal( context, ent.principal );
+
+		a = attr_find( e->e_attrs, ad_krb5Key );
+		if ( !a ) break;
+
+		ent.keys.len = 1;
+		ent.keys.val = &ekey;
+		decode_Key((unsigned char *) a->a_vals[0].bv_val,
+			(size_t) a->a_vals[0].bv_len, &ent.keys.val[0], &l);
+		if ( db->HDB_MASTER_KEY_SET )
+			hdb_unseal_keys( context, db, &ent );
+
+		krb5_string_to_key_salt( context, ekey.key.keytype, cred->bv_val,
+			salt, &key );
+
+		krb5_free_salt( context, salt );
+
+		if ( memcmp( ekey.key.keyvalue.data, key.keyvalue.data,
+			key.keyvalue.length ) == 0 ) rc = LUTIL_PASSWD_OK;
+
+		krb5_free_keyblock_contents( context, &key );
+		krb5_free_keyblock_contents( context, &ekey.key );
+
+	} while(0);
+	be_entry_release_r( op, e );
+	return rc;
+}
+
+static int k5key_hash(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	ber_dupbv( hash, (struct berval *)&k5key_scheme );
+	return LUTIL_PASSWD_OK;
+}
+#endif /* DO_KRB5 */
+
+static int smbk5pwd_exop_passwd(
+	Operation *op,
+	SlapReply *rs )
+{
+	int rc;
+	req_pwdexop_s *qpw = &op->oq_pwdexop;
+	Entry *e;
+	Modifications *ml;
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	smbk5pwd_t *pi = on->on_bi.bi_private;
+	char term;
+
+	/* Not the operation we expected, pass it on... */
+	if ( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+	rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
+	if ( rc != LDAP_SUCCESS ) return rc;
+
+	term = qpw->rs_new.bv_val[qpw->rs_new.bv_len];
+	qpw->rs_new.bv_val[qpw->rs_new.bv_len] = '\0';
+
+#ifdef DO_KRB5
+	/* Kerberos stuff */
+	do {
+		krb5_error_code ret;
+		hdb_entry ent;
+		struct berval *keys;
+		size_t nkeys;
+		int kvno, i;
+		Attribute *a;
+
+		if ( !SMBK5PWD_DO_KRB5( pi ) ) break;
+
+		if ( !is_entry_objectclass(e, oc_krb5KDCEntry, 0 ) ) break;
+
+		a = attr_find( e->e_attrs, ad_krb5PrincipalName );
+		if ( !a ) break;
+
+		memset( &ent, 0, sizeof(ent) );
+		ret = krb5_parse_name(context, a->a_vals[0].bv_val, &ent.principal);
+		if ( ret ) break;
+
+		a = attr_find( e->e_attrs, ad_krb5KeyVersionNumber );
+		kvno = 0;
+		if ( a ) {
+			if ( lutil_atoi( &kvno, a->a_vals[0].bv_val ) != 0 ) {
+				Debug( LDAP_DEBUG_ANY, "%s smbk5pwd EXOP: "
+					"dn=\"%s\" unable to parse krb5KeyVersionNumber=\"%s\"\n",
+					op->o_log_prefix, e->e_name.bv_val, a->a_vals[0].bv_val );
+			}
+
+		} else {
+			/* shouldn't happen, this is a required attr */
+			Debug( LDAP_DEBUG_ANY, "%s smbk5pwd EXOP: "
+				"dn=\"%s\" missing krb5KeyVersionNumber\n",
+				op->o_log_prefix, e->e_name.bv_val );
+		}
+
+		ret = hdb_generate_key_set_password(context, ent.principal,
+			qpw->rs_new.bv_val, &ent.keys.val, &nkeys);
+		ent.keys.len = nkeys;
+		hdb_seal_keys(context, db, &ent);
+		krb5_free_principal( context, ent.principal );
+
+		keys = ch_malloc( (ent.keys.len + 1) * sizeof(struct berval));
+
+		for (i = 0; i < ent.keys.len; i++) {
+			unsigned char *buf;
+			size_t len;
+
+			ASN1_MALLOC_ENCODE(Key, buf, len, &ent.keys.val[i], &len, ret);
+			if (ret != 0)
+				break;
+			
+			keys[i].bv_val = (char *)buf;
+			keys[i].bv_len = len;
+		}
+		BER_BVZERO( &keys[i] );
+
+		hdb_free_keys(context, ent.keys.len, ent.keys.val);
+
+		if ( i != ent.keys.len ) {
+			ber_bvarray_free( keys );
+			break;
+		}
+
+		ml = ch_malloc(sizeof(Modifications));
+		if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		ml->sml_desc = ad_krb5Key;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_numvals = i;
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+		
+		ml = ch_malloc(sizeof(Modifications));
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+		
+		ml->sml_desc = ad_krb5KeyVersionNumber;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_numvals = 1;
+		ml->sml_values = ch_malloc( 2 * sizeof(struct berval));
+		ml->sml_values[0].bv_val = ch_malloc( 64 );
+		ml->sml_values[0].bv_len = sprintf(ml->sml_values[0].bv_val,
+			"%d", kvno+1 );
+		BER_BVZERO( &ml->sml_values[1] );
+		ml->sml_nvalues = NULL;
+	} while ( 0 );
+#endif /* DO_KRB5 */
+
+#ifdef DO_SAMBA
+	/* Samba stuff */
+	if ( SMBK5PWD_DO_SAMBA( pi ) && is_entry_objectclass(e, oc_sambaSamAccount, 0 ) ) {
+		struct berval *keys;
+		ber_len_t j,l;
+		wchar_t *wcs, wc;
+		char *c;
+		struct berval pwd;
+		
+		/* Expand incoming UTF8 string to UCS4 */
+		l = ldap_utf8_chars(qpw->rs_new.bv_val);
+		wcs = ch_malloc((l+1) * sizeof(wchar_t));
+
+		ldap_x_utf8s_to_wcs( wcs, qpw->rs_new.bv_val, l );
+		
+		/* Truncate UCS4 to UCS2 */
+		c = (char *)wcs;
+		for (j=0; j<l; j++) {
+			wc = wcs[j];
+			*c++ = wc & 0xff;
+			*c++ = (wc >> 8) & 0xff;
+		}
+		*c++ = 0;
+		pwd.bv_val = (char *)wcs;
+		pwd.bv_len = l * 2;
+
+		ml = ch_malloc(sizeof(Modifications));
+		if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		keys = ch_malloc( 2 * sizeof(struct berval) );
+		BER_BVZERO( &keys[1] );
+		nthash( &pwd, keys );
+		
+		ml->sml_desc = ad_sambaNTPassword;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_numvals = 1;
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+
+		ch_free(wcs);
+
+		ml = ch_malloc(sizeof(Modifications));
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		keys = ch_malloc( 2 * sizeof(struct berval) );
+		keys[0].bv_val = ch_malloc( LDAP_PVT_INTTYPE_CHARS(long) );
+		keys[0].bv_len = snprintf(keys[0].bv_val,
+			LDAP_PVT_INTTYPE_CHARS(long),
+			"%ld", slap_get_time());
+		BER_BVZERO( &keys[1] );
+		
+		ml->sml_desc = ad_sambaPwdLastSet;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_numvals = 1;
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+
+		if (pi->smb_must_change)
+		{
+			ml = ch_malloc(sizeof(Modifications));
+			ml->sml_next = qpw->rs_mods;
+			qpw->rs_mods = ml;
+
+			keys = ch_malloc( 2 * sizeof(struct berval) );
+			keys[0].bv_val = ch_malloc( LDAP_PVT_INTTYPE_CHARS(long) );
+			keys[0].bv_len = snprintf(keys[0].bv_val,
+					LDAP_PVT_INTTYPE_CHARS(long),
+					"%ld", slap_get_time() + pi->smb_must_change);
+			BER_BVZERO( &keys[1] );
+
+			ml->sml_desc = ad_sambaPwdMustChange;
+			ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+			ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+			ml->sml_numvals = 1;
+			ml->sml_values = keys;
+			ml->sml_nvalues = NULL;
+		}
+
+		if (pi->smb_can_change)
+		{
+			ml = ch_malloc(sizeof(Modifications));
+			ml->sml_next = qpw->rs_mods;
+			qpw->rs_mods = ml;
+
+			keys = ch_malloc( 2 * sizeof(struct berval) );
+			keys[0].bv_val = ch_malloc( LDAP_PVT_INTTYPE_CHARS(long) );
+			keys[0].bv_len = snprintf(keys[0].bv_val,
+					LDAP_PVT_INTTYPE_CHARS(long),
+					"%ld", slap_get_time() + pi->smb_can_change);
+			BER_BVZERO( &keys[1] );
+
+			ml->sml_desc = ad_sambaPwdCanChange;
+			ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+			ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+			ml->sml_numvals = 1;
+			ml->sml_values = keys;
+			ml->sml_nvalues = NULL;
+		}
+	}
+#endif /* DO_SAMBA */
+
+#ifdef DO_SHADOW
+	/* shadow stuff */
+	if ( SMBK5PWD_DO_SHADOW( pi ) && is_entry_objectclass(e, oc_shadowAccount, 0 ) ) {
+		struct berval *keys;
+
+		ml = ch_malloc(sizeof(Modifications));
+		if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		keys = ch_malloc( sizeof(struct berval) * 2);
+		BER_BVZERO( &keys[1] );
+		keys[0].bv_val = ch_malloc( LDAP_PVT_INTTYPE_CHARS(long) );
+		keys[0].bv_len = snprintf(keys[0].bv_val,
+			LDAP_PVT_INTTYPE_CHARS(long),
+			"%ld", (long)(slap_get_time() / (60 * 60 * 24)));
+
+		ml->sml_desc = ad_shadowLastChange;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_numvals = 1;
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+	}
+#endif /* DO_SHADOW */
+
+	be_entry_release_r( op, e );
+	qpw->rs_new.bv_val[qpw->rs_new.bv_len] = term;
+
+	return SLAP_CB_CONTINUE;
+}
+
+static slap_overinst smbk5pwd;
+
+/* back-config stuff */
+enum {
+	PC_SMB_MUST_CHANGE = 1,
+	PC_SMB_CAN_CHANGE,
+	PC_SMB_ENABLE
+};
+
+static ConfigDriver smbk5pwd_cf_func;
+
+/*
+ * NOTE: uses OID arcs OLcfgCtAt:1 and OLcfgCtOc:1
+ */
+
+static ConfigTable smbk5pwd_cfats[] = {
+	{ "smbk5pwd-enable", "arg",
+		2, 0, 0, ARG_MAGIC|PC_SMB_ENABLE, smbk5pwd_cf_func,
+		"( OLcfgCtAt:1.1 NAME 'olcSmbK5PwdEnable' "
+		"DESC 'Modules to be enabled' "
+		"EQUALITY caseIgnoreMatch "
+		"SYNTAX OMsDirectoryString )", NULL, NULL },
+	{ "smbk5pwd-must-change", "time",
+		2, 2, 0, ARG_MAGIC|ARG_INT|PC_SMB_MUST_CHANGE, smbk5pwd_cf_func,
+		"( OLcfgCtAt:1.2 NAME 'olcSmbK5PwdMustChange' "
+		"DESC 'Credentials validity interval' "
+		"EQUALITY integerMatch "
+		"SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
+	{ "smbk5pwd-can-change", "time",
+		2, 2, 0, ARG_MAGIC|ARG_INT|PC_SMB_CAN_CHANGE, smbk5pwd_cf_func,
+		"( OLcfgCtAt:1.3 NAME 'olcSmbK5PwdCanChange' "
+		"DESC 'Credentials minimum validity interval' "
+		"EQUALITY integerMatch "
+		"SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
+
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs smbk5pwd_cfocs[] = {
+	{ "( OLcfgCtOc:1.1 "
+		"NAME 'olcSmbK5PwdConfig' "
+		"DESC 'smbk5pwd overlay configuration' "
+		"SUP olcOverlayConfig "
+		"MAY ( "
+			"olcSmbK5PwdEnable "
+			"$ olcSmbK5PwdMustChange "
+			"$ olcSmbK5PwdCanChange "
+		") )", Cft_Overlay, smbk5pwd_cfats },
+
+	{ NULL, 0, NULL }
+};
+
+/*
+ * add here other functionalities; handle their initialization
+ * as appropriate in smbk5pwd_modules_init().
+ */
+static slap_verbmasks smbk5pwd_modules[] = {
+	{ BER_BVC( "krb5" ),		SMBK5PWD_F_KRB5	},
+	{ BER_BVC( "samba" ),		SMBK5PWD_F_SAMBA },
+	{ BER_BVC( "shadow" ),		SMBK5PWD_F_SHADOW },
+	{ BER_BVNULL,			-1 }
+};
+
+static int
+smbk5pwd_cf_func( ConfigArgs *c )
+{
+	slap_overinst	*on = (slap_overinst *)c->bi;
+
+	int		rc = 0;
+	smbk5pwd_t	*pi = on->on_bi.bi_private;
+
+	if ( c->op == SLAP_CONFIG_EMIT ) {
+		switch( c->type ) {
+		case PC_SMB_MUST_CHANGE:
+#ifdef DO_SAMBA
+			c->value_int = pi->smb_must_change;
+#else /* ! DO_SAMBA */
+			c->value_int = 0;
+#endif /* ! DO_SAMBA */
+			break;
+
+		case PC_SMB_CAN_CHANGE:
+#ifdef DO_SAMBA
+			c->value_int = pi->smb_can_change;
+#else /* ! DO_SAMBA */
+			c->value_int = 0;
+#endif /* ! DO_SAMBA */
+			break;
+
+		case PC_SMB_ENABLE:
+			c->rvalue_vals = NULL;
+			if ( pi->mode ) {
+				mask_to_verbs( smbk5pwd_modules, pi->mode, &c->rvalue_vals );
+				if ( c->rvalue_vals == NULL ) {
+					rc = 1;
+				}
+			}
+			break;
+
+		default:
+			assert( 0 );
+			rc = 1;
+		}
+		return rc;
+
+	} else if ( c->op == LDAP_MOD_DELETE ) {
+		switch( c->type ) {
+		case PC_SMB_MUST_CHANGE:
+			break;
+
+                case PC_SMB_CAN_CHANGE:
+                        break;
+
+		case PC_SMB_ENABLE:
+			if ( !c->line ) {
+				pi->mode = 0;
+
+			} else {
+				int i;
+
+				i = verb_to_mask( c->line, smbk5pwd_modules );
+				pi->mode &= ~smbk5pwd_modules[i].mask;
+			}
+			break;
+
+		default:
+			assert( 0 );
+			rc = 1;
+		}
+		return rc;
+	}
+
+	switch( c->type ) {
+	case PC_SMB_MUST_CHANGE:
+#ifdef DO_SAMBA
+		if ( c->value_int < 0 ) {
+			Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+				"<%s> invalid negative value \"%d\".",
+				c->log, c->argv[ 0 ], c->value_int );
+			return 1;
+		}
+		pi->smb_must_change = c->value_int;
+#else /* ! DO_SAMBA */
+		Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+			"<%s> only meaningful "
+			"when compiled with -DDO_SAMBA.\n",
+			c->log, c->argv[ 0 ] );
+		return 1;
+#endif /* ! DO_SAMBA */
+		break;
+
+        case PC_SMB_CAN_CHANGE:
+#ifdef DO_SAMBA
+                if ( c->value_int < 0 ) {
+                        Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+                                "<%s> invalid negative value \"%d\".",
+                                c->log, c->argv[ 0 ], c->value_int );
+                        return 1;
+                }
+                pi->smb_can_change = c->value_int;
+#else /* ! DO_SAMBA */
+                Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+                        "<%s> only meaningful "
+                        "when compiled with -DDO_SAMBA.\n",
+                        c->log, c->argv[ 0 ] );
+                return 1;
+#endif /* ! DO_SAMBA */
+                break;
+
+	case PC_SMB_ENABLE: {
+		slap_mask_t	mode = pi->mode, m = 0;
+
+		rc = verbs_to_mask( c->argc, c->argv, smbk5pwd_modules, &m );
+		if ( rc > 0 ) {
+			Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+				"<%s> unknown module \"%s\".\n",
+				c->log, c->argv[ 0 ], c->argv[ rc ] );
+			return 1;
+		}
+
+		/* we can hijack the smbk5pwd_t structure because
+		 * from within the configuration, this is the only
+		 * active thread. */
+		pi->mode |= m;
+
+#ifndef DO_KRB5
+		if ( SMBK5PWD_DO_KRB5( pi ) ) {
+			Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+				"<%s> module \"%s\" only allowed when compiled with -DDO_KRB5.\n",
+				c->log, c->argv[ 0 ], c->argv[ rc ] );
+			pi->mode = mode;
+			return 1;
+		}
+#endif /* ! DO_KRB5 */
+
+#ifndef DO_SAMBA
+		if ( SMBK5PWD_DO_SAMBA( pi ) ) {
+			Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+				"<%s> module \"%s\" only allowed when compiled with -DDO_SAMBA.\n",
+				c->log, c->argv[ 0 ], c->argv[ rc ] );
+			pi->mode = mode;
+			return 1;
+		}
+#endif /* ! DO_SAMBA */
+
+#ifndef DO_SHADOW
+		if ( SMBK5PWD_DO_SHADOW( pi ) ) {
+			Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
+				"<%s> module \"%s\" only allowed when compiled with -DDO_SHADOW.\n",
+				c->log, c->argv[ 0 ], c->argv[ rc ] );
+			pi->mode = mode;
+			return 1;
+		}
+#endif /* ! DO_SHADOW */
+
+		/* Re-initialize the module, because
+		 * the configuration might have changed */
+		rc = smbk5pwd_modules_init( pi );
+		if ( rc ) {
+			pi->mode = mode;
+			return 1;
+		}
+
+		} break;
+
+	default:
+		assert( 0 );
+		return 1;
+	}
+	return rc;
+}
+
+static int
+smbk5pwd_modules_init( smbk5pwd_t *pi )
+{
+	static struct {
+		const char		*name;
+		AttributeDescription	**adp;
+	}
+#ifdef DO_KRB5
+	krb5_ad[] = {
+		{ "krb5Key",			&ad_krb5Key },
+		{ "krb5KeyVersionNumber",	&ad_krb5KeyVersionNumber },
+		{ "krb5PrincipalName",		&ad_krb5PrincipalName },
+		{ "krb5ValidEnd",		&ad_krb5ValidEnd },
+		{ NULL }
+	},
+#endif /* DO_KRB5 */
+#ifdef DO_SAMBA
+	samba_ad[] = {
+		{ "sambaNTPassword",		&ad_sambaNTPassword },
+		{ "sambaPwdLastSet",		&ad_sambaPwdLastSet },
+		{ "sambaPwdMustChange",		&ad_sambaPwdMustChange },
+		{ "sambaPwdCanChange",		&ad_sambaPwdCanChange },
+		{ NULL }
+	},
+#endif /* DO_SAMBA */
+#ifdef DO_SHADOW
+	shadow_ad[] = {
+		{ "shadowLastChange",		&ad_shadowLastChange },
+		{ NULL }
+	},
+#endif /* DO_SHADOW */
+	dummy_ad;
+
+	/* this is to silence the unused var warning */
+	(void) dummy_ad;
+
+#ifdef DO_KRB5
+	if ( SMBK5PWD_DO_KRB5( pi ) && oc_krb5KDCEntry == NULL ) {
+		krb5_error_code	ret;
+		extern HDB 	*_kadm5_s_get_db(void *);
+
+		int		i, rc;
+
+		/* Make sure all of our necessary schema items are loaded */
+		oc_krb5KDCEntry = oc_find( "krb5KDCEntry" );
+		if ( !oc_krb5KDCEntry ) {
+			Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+				"unable to find \"krb5KDCEntry\" objectClass.\n" );
+			return -1;
+		}
+
+		for ( i = 0; krb5_ad[ i ].name != NULL; i++ ) {
+			const char	*text;
+
+			*(krb5_ad[ i ].adp) = NULL;
+
+			rc = slap_str2ad( krb5_ad[ i ].name, krb5_ad[ i ].adp, &text );
+			if ( rc != LDAP_SUCCESS ) {
+				Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+					"unable to find \"%s\" attributeType: %s (%d).\n",
+					krb5_ad[ i ].name, text, rc );
+				oc_krb5KDCEntry = NULL;
+				return rc;
+			}
+		}
+
+		/* Initialize Kerberos context */
+		ret = krb5_init_context(&context);
+		if (ret) {
+			Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+				"unable to initialize krb5 context (%d).\n",
+				ret );
+			oc_krb5KDCEntry = NULL;
+			return -1;
+		}
+
+		ret = kadm5_s_init_with_password_ctx( context,
+			KADM5_ADMIN_SERVICE,
+			NULL,
+			KADM5_ADMIN_SERVICE,
+			&conf, 0, 0, &kadm_context );
+		if (ret) {
+			char *err_str, *err_msg = "<unknown error>";
+			err_str = krb5_get_error_string( context );
+			if (!err_str)
+				err_msg = (char *)krb5_get_err_text( context, ret );
+			Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+				"unable to initialize krb5 admin context: %s (%d).\n",
+				err_str ? err_str : err_msg, ret );
+			if (err_str)
+				krb5_free_error_string( context, err_str );
+			krb5_free_context( context );
+			oc_krb5KDCEntry = NULL;
+			return -1;
+		}
+
+		db = _kadm5_s_get_db( kadm_context );
+	}
+#endif /* DO_KRB5 */
+
+#ifdef DO_SAMBA
+	if ( SMBK5PWD_DO_SAMBA( pi ) && oc_sambaSamAccount == NULL ) {
+		int		i, rc;
+
+		oc_sambaSamAccount = oc_find( "sambaSamAccount" );
+		if ( !oc_sambaSamAccount ) {
+			Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+				"unable to find \"sambaSamAccount\" objectClass.\n" );
+			return -1;
+		}
+
+		for ( i = 0; samba_ad[ i ].name != NULL; i++ ) {
+			const char	*text;
+
+			*(samba_ad[ i ].adp) = NULL;
+
+			rc = slap_str2ad( samba_ad[ i ].name, samba_ad[ i ].adp, &text );
+			if ( rc != LDAP_SUCCESS ) {
+				Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+					"unable to find \"%s\" attributeType: %s (%d).\n",
+					samba_ad[ i ].name, text, rc );
+				oc_sambaSamAccount = NULL;
+				return rc;
+			}
+		}
+	}
+#endif /* DO_SAMBA */
+
+#ifdef DO_SHADOW
+	if ( SMBK5PWD_DO_SHADOW( pi ) && oc_shadowAccount == NULL ) {
+		int		i, rc;
+
+		oc_shadowAccount = oc_find( "shadowAccount" );
+		if ( !oc_shadowAccount ) {
+			Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+				"unable to find \"shadowAccount\" objectClass.\n" );
+			return -1;
+		}
+
+		for ( i = 0; shadow_ad[ i ].name != NULL; i++ ) {
+			const char	*text;
+
+			*(shadow_ad[ i ].adp) = NULL;
+
+			rc = slap_str2ad( shadow_ad[ i ].name, shadow_ad[ i ].adp, &text );
+			if ( rc != LDAP_SUCCESS ) {
+				Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
+					"unable to find \"%s\" attributeType: %s (%d).\n",
+					shadow_ad[ i ].name, text, rc );
+				oc_shadowAccount = NULL;
+				return rc;
+			}
+		}
+	}
+#endif /* DO_SHADOW */
+
+	return 0;
+}
+
+static int
+smbk5pwd_db_init(BackendDB *be, ConfigReply *cr)
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	smbk5pwd_t	*pi;
+
+	pi = ch_calloc( 1, sizeof( smbk5pwd_t ) );
+	if ( pi == NULL ) {
+		return 1;
+	}
+	on->on_bi.bi_private = (void *)pi;
+
+	return 0;
+}
+
+static int
+smbk5pwd_db_open(BackendDB *be, ConfigReply *cr)
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	smbk5pwd_t	*pi = (smbk5pwd_t *)on->on_bi.bi_private;
+
+	int	rc;
+
+	if ( pi->mode == 0 ) {
+		pi->mode = SMBK5PWD_F_ALL;
+	}
+
+	rc = smbk5pwd_modules_init( pi );
+	if ( rc ) {
+		return rc;
+	}
+
+	return 0;
+}
+
+static int
+smbk5pwd_db_destroy(BackendDB *be, ConfigReply *cr)
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	smbk5pwd_t	*pi = (smbk5pwd_t *)on->on_bi.bi_private;
+
+	if ( pi ) {
+		ch_free( pi );
+	}
+
+	return 0;
+}
+
+int
+smbk5pwd_initialize(void)
+{
+	int		rc;
+
+	smbk5pwd.on_bi.bi_type = "smbk5pwd";
+
+	smbk5pwd.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	smbk5pwd.on_bi.bi_db_init = smbk5pwd_db_init;
+	smbk5pwd.on_bi.bi_db_open = smbk5pwd_db_open;
+	smbk5pwd.on_bi.bi_db_destroy = smbk5pwd_db_destroy;
+
+	smbk5pwd.on_bi.bi_extended = smbk5pwd_exop_passwd;
+    
+#ifdef DO_KRB5
+	smbk5pwd.on_bi.bi_op_bind = smbk5pwd_op_bind;
+
+	lutil_passwd_add( (struct berval *)&k5key_scheme, k5key_chk, k5key_hash );
+#endif
+
+	smbk5pwd.on_bi.bi_cf_ocs = smbk5pwd_cfocs;
+
+	rc = config_register_schema( smbk5pwd_cfats, smbk5pwd_cfocs );
+	if ( rc ) {
+		return rc;
+	}
+
+	return overlay_register( &smbk5pwd );
+}
+
+#if SLAPD_OVER_SMBK5PWD == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	return smbk5pwd_initialize();
+}
+#endif
+
+#endif /* defined(SLAPD_OVER_SMBK5PWD) */
diff --git a/contrib/slapd-modules/trace/Makefile b/contrib/slapd-modules/trace/Makefile
new file mode 100644
index 0000000..1bf8a55
--- /dev/null
+++ b/contrib/slapd-modules/trace/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_TRACE=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = trace.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+trace.la: trace.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/trace/trace.c b/contrib/slapd-modules/trace/trace.c
new file mode 100644
index 0000000..1e61025
--- /dev/null
+++ b/contrib/slapd-modules/trace/trace.c
@@ -0,0 +1,256 @@
+/* trace.c - traces overlay invocation */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2006-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion in
+ * OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_TRACE
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "lutil.h"
+
+static int
+trace_op2str( Operation *op, char **op_strp )
+{
+	switch ( op->o_tag ) {
+	case LDAP_REQ_BIND:
+		*op_strp = "BIND";
+		break;
+
+	case LDAP_REQ_UNBIND:
+		*op_strp = "UNBIND";
+		break;
+
+	case LDAP_REQ_SEARCH:
+		*op_strp = "SEARCH";
+		break;
+
+	case LDAP_REQ_MODIFY:
+		*op_strp = "MODIFY";
+		break;
+
+	case LDAP_REQ_ADD:
+		*op_strp = "ADD";
+		break;
+
+	case LDAP_REQ_DELETE:
+		*op_strp = "DELETE";
+		break;
+
+	case LDAP_REQ_MODRDN:
+		*op_strp = "MODRDN";
+		break;
+
+	case LDAP_REQ_COMPARE:
+		*op_strp = "COMPARE";
+		break;
+
+	case LDAP_REQ_ABANDON:
+		*op_strp = "ABANDON";
+		break;
+
+	case LDAP_REQ_EXTENDED:
+		*op_strp = "EXTENDED";
+		break;
+
+	default:
+		assert( 0 );
+	}
+
+	return 0;
+}
+
+static int
+trace_op_func( Operation *op, SlapReply *rs )
+{
+	char	*op_str = NULL;
+
+	(void)trace_op2str( op, &op_str );
+
+	switch ( op->o_tag ) {
+	case LDAP_REQ_EXTENDED:
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+			"%s trace op=EXTENDED dn=\"%s\" reqoid=%s\n",
+			op->o_log_prefix, 
+			BER_BVISNULL( &op->o_req_ndn ) ? "(null)" : op->o_req_ndn.bv_val,
+			BER_BVISNULL( &op->ore_reqoid ) ? "" : op->ore_reqoid.bv_val );
+		break;
+
+	default:
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+			"%s trace op=%s dn=\"%s\"\n",
+			op->o_log_prefix, op_str,
+			BER_BVISNULL( &op->o_req_ndn ) ? "(null)" : op->o_req_ndn.bv_val );
+		break;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+trace_response( Operation *op, SlapReply *rs )
+{
+	char	*op_str = NULL;
+
+	(void)trace_op2str( op, &op_str );
+
+	switch ( op->o_tag ) {
+	case LDAP_REQ_EXTENDED:
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+			"%s trace op=EXTENDED RESPONSE dn=\"%s\" reqoid=%s rspoid=%s err=%d\n",
+			op->o_log_prefix,
+			BER_BVISNULL( &op->o_req_ndn ) ? "(null)" : op->o_req_ndn.bv_val,
+			BER_BVISNULL( &op->ore_reqoid ) ? "" : op->ore_reqoid.bv_val,
+			rs->sr_rspoid == NULL ? "" : rs->sr_rspoid,
+			rs->sr_err );
+		break;
+
+	case LDAP_REQ_SEARCH:
+		switch ( rs->sr_type ) {
+		case REP_SEARCH:
+			Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+				"%s trace op=SEARCH ENTRY dn=\"%s\"\n",
+				op->o_log_prefix,
+				rs->sr_entry->e_name.bv_val );
+			goto done;
+
+		case REP_SEARCHREF:
+			Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+				"%s trace op=SEARCH REFERENCE ref=\"%s\"\n",
+				op->o_log_prefix,
+				rs->sr_ref[ 0 ].bv_val );
+			goto done;
+
+		case REP_RESULT:
+			break;
+
+		default:
+			assert( 0 );
+		}
+		/* fallthru */
+
+	default:
+		Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+			"%s trace op=%s RESPONSE dn=\"%s\" err=%d\n",
+			op->o_log_prefix,
+			op_str,
+			BER_BVISNULL( &op->o_req_ndn ) ? "(null)" : op->o_req_ndn.bv_val,
+			rs->sr_err );
+		break;
+	}
+
+done:;
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+trace_db_init( BackendDB *be, ConfigReply *cr )
+{
+	Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+		"trace DB_INIT\n" );
+
+	return 0;
+}
+
+static int
+trace_db_config(
+	BackendDB	*be,
+	const char	*fname,
+	int		lineno,
+	int		argc,
+	char		**argv )
+{
+	Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+		"trace DB_CONFIG argc=%d argv[0]=\"%s\"\n",
+		argc, argv[ 0 ] );
+
+	return 0;
+}
+
+static int
+trace_db_open( BackendDB *be, ConfigReply *cr )
+{
+	Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+		"trace DB_OPEN\n" );
+
+	return 0;
+}
+
+static int
+trace_db_close( BackendDB *be, ConfigReply *cr )
+{
+	Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+		"trace DB_CLOSE\n" );
+
+	return 0;
+}
+
+static int
+trace_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	Log( LDAP_DEBUG_ANY, LDAP_LEVEL_INFO,
+		"trace DB_DESTROY\n" );
+
+	return 0;
+}
+
+static slap_overinst 		trace;
+
+int
+trace_initialize()
+{
+	trace.on_bi.bi_type = "trace";
+
+	trace.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	trace.on_bi.bi_db_init = trace_db_init;
+	trace.on_bi.bi_db_open = trace_db_open;
+	trace.on_bi.bi_db_config = trace_db_config;
+	trace.on_bi.bi_db_close = trace_db_close;
+	trace.on_bi.bi_db_destroy = trace_db_destroy;
+
+	trace.on_bi.bi_op_add = trace_op_func;
+	trace.on_bi.bi_op_bind = trace_op_func;
+	trace.on_bi.bi_op_unbind = trace_op_func;
+	trace.on_bi.bi_op_compare = trace_op_func;
+	trace.on_bi.bi_op_delete = trace_op_func;
+	trace.on_bi.bi_op_modify = trace_op_func;
+	trace.on_bi.bi_op_modrdn = trace_op_func;
+	trace.on_bi.bi_op_search = trace_op_func;
+	trace.on_bi.bi_op_abandon = trace_op_func;
+	trace.on_bi.bi_extended = trace_op_func;
+
+	trace.on_response = trace_response;
+
+	return overlay_register( &trace );
+}
+
+#if SLAPD_OVER_TRACE == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return trace_initialize();
+}
+#endif /* SLAPD_OVER_TRACE == SLAPD_MOD_DYNAMIC */
+
+#endif /* defined(SLAPD_OVER_TRACE) */
diff --git a/contrib/slapd-modules/usn/Makefile b/contrib/slapd-modules/usn/Makefile
new file mode 100644
index 0000000..d7af04b
--- /dev/null
+++ b/contrib/slapd-modules/usn/Makefile
@@ -0,0 +1,46 @@
+# $OpenLDAP$
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_USN=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = usn.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+usn.la: usn.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/usn/README b/contrib/slapd-modules/usn/README
new file mode 100644
index 0000000..3bfb096
--- /dev/null
+++ b/contrib/slapd-modules/usn/README
@@ -0,0 +1,44 @@
+This directory contains a slapd overlay, usn, that extends slapd
+to maintain the usnCreated and usnChanged operational attributes
+normally used by Microsoft ActiveDirectory.
+
+To use the overlay, add:
+
+	moduleload <path to>usn.so
+	...
+
+	database mdb
+	...
+	overlay usn
+
+to your slapd configuration file. The schema definitions for the
+two USN attributes are hardcoded in this overlay.
+
+Use Makefile to compile this plugin or use a command line similar to:
+
+	gcc -c -I ../../include/ -I ../../servers/slapd -DSLAPD_OVER_USN=SLAPD_MOD_DYNAMIC usn.c
+	gcc -shared -o usn.so usn.o
+
+This overlay is only set up to be built as a dynamically loaded module.
+On most platforms, in order for the module to be usable, all of the 
+library dependencies must also be available as shared libraries.
+
+If you need to build the overlay statically, you will have to move it into the
+slapd/overlays directory and edit the Makefile and overlays.c to reference
+it. You will also have to define SLAPD_OVER_USN to SLAPD_MOD_STATIC,
+and add the relevant libraries to the main slapd link command.
+
+---
+This work is part of OpenLDAP Software <http://www.openldap.org/>.
+
+Copyright 2007-2022 The OpenLDAP Foundation.
+Portions Copyright 2007 Howard Chu, Symas Corp. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
diff --git a/contrib/slapd-modules/usn/usn.c b/contrib/slapd-modules/usn/usn.c
new file mode 100644
index 0000000..abd6d13
--- /dev/null
+++ b/contrib/slapd-modules/usn/usn.c
@@ -0,0 +1,330 @@
+/* usn.c - Maintain Microsoft-style Update Sequence Numbers */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2007-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Howard Chu for inclusion in
+ * OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_USN
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "slap-config.h"
+
+/* This overlay intercepts write operations and adds a Microsoft-style
+ * USN to the target entry.
+ */
+
+typedef struct usn_info {
+	int ui_current;
+	ldap_pvt_thread_mutex_t ui_mutex;
+} usn_info_t;
+
+static AttributeDescription *ad_usnCreated, *ad_usnChanged;
+
+static struct {
+	char *desc;
+	AttributeDescription **adp;
+} as[] = {
+	{ "( 1.2.840.113556.1.2.19 "
+	    "NAME 'uSNCreated' "
+	    "SYNTAX '1.2.840.113556.1.4.906' "
+		"SINGLE-VALUE "
+		"NO-USER-MODIFICATION )",
+		&ad_usnCreated },
+	{ "( 1.2.840.113556.1.2.120 "
+		"NAME 'uSNChanged' "
+		"SYNTAX '1.2.840.113556.1.4.906' "
+		"SINGLE-VALUE "
+		"NO-USER-MODIFICATION )",
+		&ad_usnChanged },
+	{ NULL }
+};
+
+static int
+usn_func( Operation *op, SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *) op->o_bd->bd_info;
+	usn_info_t		*ui = on->on_bi.bi_private;
+	int my_usn;
+	char intbuf[64];
+	struct berval bv[2];
+
+	ldap_pvt_thread_mutex_lock( &ui->ui_mutex );
+	ui->ui_current++;
+	my_usn = ui->ui_current;
+	ldap_pvt_thread_mutex_unlock( &ui->ui_mutex );
+
+	BER_BVZERO(&bv[1]);
+	bv[0].bv_val = intbuf;
+	bv[0].bv_len = snprintf( intbuf, sizeof(intbuf), "%d", my_usn );
+	switch(op->o_tag) {
+	case LDAP_REQ_ADD:
+		attr_merge( op->ora_e, ad_usnCreated, bv, NULL );
+		attr_merge( op->ora_e, ad_usnChanged, bv, NULL );
+		break;
+	case LDAP_REQ_DELETE:
+		/* Probably need to update root usnLastObjRem */
+		break;
+	default: {
+		/* Modify, ModDN */
+		Modifications *ml, *mod = ch_calloc( sizeof( Modifications ), 1 );
+		for ( ml = op->orm_modlist; ml && ml->sml_next; ml = ml->sml_next );
+		ml->sml_next = mod;
+		mod->sml_desc = ad_usnChanged;
+		mod->sml_numvals = 1;
+		value_add_one( &mod->sml_values, &bv[0] );
+		mod->sml_nvalues = NULL;
+		mod->sml_op = LDAP_MOD_REPLACE;
+		mod->sml_flags = 0;
+		mod->sml_next = NULL;
+		break;
+		}
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+usn_operational(
+	Operation *op,
+	SlapReply *rs )
+{
+	slap_overinst		*on = (slap_overinst *)op->o_bd->bd_info;
+	usn_info_t		*ui = (usn_info_t *)on->on_bi.bi_private;
+
+	if ( rs->sr_entry &&
+		dn_match( &rs->sr_entry->e_nname, op->o_bd->be_nsuffix )) {
+
+		if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
+			ad_inlist( ad_usnChanged, rs->sr_attrs )) {
+			Attribute *a, **ap = NULL;
+			char intbuf[64];
+			struct berval bv;
+			int my_usn;
+
+			for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
+				if ( a->a_desc == ad_usnChanged )
+					break;
+			}
+
+			if ( !a ) {
+				for ( ap = &rs->sr_operational_attrs; *ap;
+					ap=&(*ap)->a_next );
+
+					a = attr_alloc( ad_usnChanged );
+					*ap = a;
+				}
+
+			if ( !ap ) {
+				if ( rs_entry2modifiable( op,rs, on )) {
+					a = attr_find( rs->sr_entry->e_attrs,
+						ad_usnChanged );
+				}
+				ber_bvarray_free( a->a_vals );
+				a->a_vals = NULL;
+				a->a_numvals = 0;
+			}
+			ldap_pvt_thread_mutex_lock( &ui->ui_mutex );
+			my_usn = ui->ui_current;
+			ldap_pvt_thread_mutex_unlock( &ui->ui_mutex );
+			bv.bv_len = snprintf( intbuf, sizeof(intbuf), "%d", my_usn );
+			bv.bv_val = intbuf;
+			attr_valadd( a, &bv, NULL, 1 );
+		}
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+/* Read the old USN from the underlying DB. This code is
+ * stolen from the syncprov overlay.
+ */
+static int
+usn_db_open(
+	BackendDB *be,
+	ConfigReply *cr)
+{
+	slap_overinst   *on = (slap_overinst *) be->bd_info;
+	usn_info_t *ui = (usn_info_t *)on->on_bi.bi_private;
+
+	Connection conn = { 0 };
+	OperationBuffer opbuf;
+	Operation *op;
+	Entry *e = NULL;
+	Attribute *a;
+	int rc;
+	void *thrctx = NULL;
+
+	thrctx = ldap_pvt_thread_pool_context();
+	connection_fake_init( &conn, &opbuf, thrctx );
+	op = &opbuf.ob_op;
+	op->o_bd = be;
+	op->o_dn = be->be_rootdn;
+	op->o_ndn = be->be_rootndn;
+
+	rc = overlay_entry_get_ov( op, be->be_nsuffix, NULL,
+		slap_schema.si_ad_contextCSN, 0, &e, on );
+
+	if ( e ) {
+		a = attr_find( e->e_attrs, ad_usnChanged );
+		if ( a ) {
+			ui->ui_current = atoi( a->a_vals[0].bv_val );
+		}
+		overlay_entry_release_ov( op, e, 0, on );
+	}
+	return 0;
+}
+
+static int
+usn_db_init(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	usn_info_t	*ui;
+
+	if ( SLAP_ISGLOBALOVERLAY( be ) ) {
+		Debug( LDAP_DEBUG_ANY,
+			"usn must be instantiated within a database.\n" );
+		return 1;
+	}
+
+	ui = ch_calloc(1, sizeof(usn_info_t));
+	ldap_pvt_thread_mutex_init( &ui->ui_mutex );
+	on->on_bi.bi_private = ui;
+	return 0;
+}
+
+static int
+usn_db_close(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	usn_info_t	*ui = on->on_bi.bi_private;
+	Connection conn = {0};
+	OperationBuffer opbuf;
+	Operation *op;
+	SlapReply rs = {REP_RESULT};
+	void *thrctx;
+
+	Modifications mod;
+	slap_callback cb = {0};
+	char intbuf[64];
+	struct berval bv[2];
+
+	thrctx = ldap_pvt_thread_pool_context();
+	connection_fake_init( &conn, &opbuf, thrctx );
+	op = &opbuf.ob_op;
+	op->o_bd = be;
+	BER_BVZERO( &bv[1] );
+	bv[0].bv_len = snprintf( intbuf, sizeof(intbuf), "%d", ui->ui_current );
+	bv[0].bv_val = intbuf;
+	mod.sml_numvals = 1;
+	mod.sml_values = bv;
+	mod.sml_nvalues = NULL;
+	mod.sml_desc = ad_usnChanged;
+	mod.sml_op = LDAP_MOD_REPLACE;
+	mod.sml_flags = 0;
+	mod.sml_next = NULL;
+
+	cb.sc_response = slap_null_cb;
+	op->o_tag = LDAP_REQ_MODIFY;
+	op->o_callback = &cb;
+	op->orm_modlist = &mod;
+	op->orm_no_opattrs = 1;
+	op->o_dn = be->be_rootdn;
+	op->o_ndn = be->be_rootndn;
+	op->o_req_dn = op->o_bd->be_suffix[0];
+	op->o_req_ndn = op->o_bd->be_nsuffix[0];
+	op->o_bd->bd_info = on->on_info->oi_orig;
+	op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
+	op->o_no_schema_check = 1;
+	op->o_bd->be_modify( op, &rs );
+	if ( mod.sml_next != NULL ) {
+		slap_mods_free( mod.sml_next, 1 );
+	}
+	return 0;
+}
+
+static int
+usn_db_destroy(
+	BackendDB *be,
+	ConfigReply *cr
+)
+{
+	slap_overinst	*on = (slap_overinst *)be->bd_info;
+	usn_info_t	*ui = on->on_bi.bi_private;
+
+	ldap_pvt_thread_mutex_destroy( &ui->ui_mutex );
+	ch_free( ui );
+	on->on_bi.bi_private = NULL;
+	return 0;
+}
+
+/* This overlay is set up for dynamic loading via moduleload. For static
+ * configuration, you'll need to arrange for the slap_overinst to be
+ * initialized and registered by some other function inside slapd.
+ */
+
+static slap_overinst usn;
+
+int
+usn_init( void )
+{
+	int i, code;
+
+	memset( &usn, 0, sizeof( slap_overinst ) );
+	usn.on_bi.bi_type = "usn";
+	usn.on_bi.bi_flags = SLAPO_BFLAG_SINGLE;
+	usn.on_bi.bi_db_init = usn_db_init;
+	usn.on_bi.bi_db_destroy = usn_db_destroy;
+	usn.on_bi.bi_db_open = usn_db_open;
+	usn.on_bi.bi_db_close = usn_db_close;
+
+	usn.on_bi.bi_op_modify = usn_func;
+	usn.on_bi.bi_op_modrdn = usn_func;
+	usn.on_bi.bi_op_add = usn_func;
+	usn.on_bi.bi_op_delete = usn_func;
+	usn.on_bi.bi_operational = usn_operational;
+
+	for ( i = 0; as[i].desc; i++ ) {
+		code = register_at( as[i].desc, as[i].adp, 0 );
+		if ( code ) {
+			Debug( LDAP_DEBUG_ANY,
+				"usn_init: register_at #%d failed\n", i );
+			return code;
+		}
+	}
+	return overlay_register( &usn );
+}
+
+#if SLAPD_OVER_USN == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return usn_init();
+}
+#endif /* SLAPD_OVER_USN == SLAPD_MOD_DYNAMIC */
+
+#endif /* defined(SLAPD_OVER_USN) */
diff --git a/contrib/slapd-modules/variant/Makefile b/contrib/slapd-modules/variant/Makefile
new file mode 100644
index 0000000..07effed
--- /dev/null
+++ b/contrib/slapd-modules/variant/Makefile
@@ -0,0 +1,77 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2017 Ondřej Kuzník, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+SRCDIR = ./
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+INSTALL = /usr/bin/install
+CC = gcc
+OPT = -g -O2
+DEFS = -DSLAPD_OVER_VARIANT=SLAPD_MOD_DYNAMIC
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = variant.la
+MANPAGES = slapo-variant.5
+CLEAN = *.o *.lo *.la .libs
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+mandir = $(exec_prefix)/share/man
+man5dir = $(mandir)/man5
+
+all: $(PROGRAMS)
+
+d :=
+sp :=
+dir := tests
+include $(dir)/Rules.mk
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+variant.la: variant.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+		-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf $(CLEAN)
+
+install: install-lib install-man FORCE
+
+install-lib: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
+install-man: $(MANPAGES)
+	mkdir -p  $(DESTDIR)$(man5dir)
+	$(INSTALL) -m 644 $(MANPAGES) $(DESTDIR)$(man5dir)
+
+FORCE:
+
diff --git a/contrib/slapd-modules/variant/slapo-variant.5 b/contrib/slapd-modules/variant/slapo-variant.5
new file mode 100644
index 0000000..a480744
--- /dev/null
+++ b/contrib/slapd-modules/variant/slapo-variant.5
@@ -0,0 +1,472 @@
+.TH SLAPO-VARIANT 5 "RELEASEDATE" "OpenLDAP"
+.\" Copyright 2016-2017 Symas Corp. All Rights Reserved.
+.\" Copying restrictions apply.  See LICENSE.
+.SH NAME
+slapo\-variant \- share values between entries
+.SH SYNOPSIS
+olcOverlay=variant
+.SH DESCRIPTION
+The
+.B variant
+overlay to
+.BR slapd (8)
+allows attributes/values to be shared between several entries. In some ways
+this is similar to
+.BR slapo-collect (5)
+with the exception that the source and target attributes can be different.
+.LP
+The overlay operates on configured
+.B variant
+entries which can have several
+.B attributes
+each configured to borrow values from an attribute in the
+.B alternate
+entry.
+.LP
+Two types of
+.B variant
+entries can be configured,
+.B regular
+and
+.BR regex ,
+where the latter are configured with a regular expression and patterns to
+locate each alternate entry, with access to the variant DN and first nine
+submatches captured by the regular expression.
+.LP
+For most purposes (see
+.BR LIMITATIONS ,
+especially for
+.B regex
+variants), the resulting entry is completely transparent to the operations
+performed on it, e.g. a modify operation on the
+.B variant
+attribute gets transformed
+into an operation on the
+.B alternate
+entry+attribute. As such, the usual ACL rules apply, appropriate
+access to both the
+.B variant
+and
+.B alternate
+entry is checked.
+.LP
+As a special case,
+.B Add
+and
+.B Delete
+operations will not affect the
+.B alternate
+entries. Should an attempt be made to add a configured
+.B variant
+entry with the
+.B variant
+attributes already populated, the operation will be rejected with a
+.B Constraint
+.BR Violation .
+
+.SH CONFIGURATION LAYOUT
+
+The overlay has to be instantiated under a database adding an entry of
+.B olcOverlay=variant
+with objectClass of
+.BR olcVariantConfig .
+
+The overlay configuration subtree consists of the following levels:
+.RS
+.TP
+.B objectClass=olcVariantConfig
+Main overlay configuration. Created directly under the database
+configuration entry.
+.TP
+.B objectClass=olcVariantVariant
+Specifies a
+.B regular variant
+entry and must be a child of an entry with
+.BR objectClass=olcVariantConfig .
+There may be as many such entries as necessary provided they all specify a
+different DN in the
+.BR olcVariantEntry
+attribute.
+.TP
+.B objectClass=olcVariantAttribute
+Specifies a
+.B regular variant
+attribute together with information where the
+.B alternate
+attribute is stored. Must be a child of an entry with
+.BR objectClass=olcVariantVariant .
+There may be as many such entries as necessary provided they all specify a
+different attribute in
+.BR olcVariantVariantAttribute .
+.TP
+.B objectClass=olcVariantRegex
+Specifies a
+.B regex variant
+entry and must be a child of an entry with
+.BR objectClass=olcVariantConfig .
+There may be as many such entries as necessary provided they all specify a
+different DN in the
+.BR olcVariantEntryRegex
+attribute.
+.TP
+.B objectClass=olcVariantAttributePattern
+Specifies a
+.B regex variant
+attribute together with information where the
+.B alternate
+attribute is stored. Must be a child of an entry with
+.BR objectClass=olcVariantRegex .
+There may be as many such entries as necessary provided they all specify a
+different attribute in
+.BR olcVariantVariantAttribute .
+.RE
+
+In the case of
+.BR slapd.conf (5),
+the variant definition is delimited by the keyword
+.B variantDN
+followed by an arbitrary number of
+.B variantSpec
+providing the attribute definitions following it. Each new
+.B variantDN
+line starts configuring a new variant.
+
+.SH OVERLAY CONFIGURATION ENTRY
+
+The top entry
+.RB ( olcVariantConfig )
+has the following options available:
+
+.RS
+.TP
+.B olcVariantPassReplication: TRUE | FALSE
+If set to
+.BR TRUE ,
+.B search
+operations with the
+.B SyncReplication
+control will be passed unchanged so that replication can be unaffected.
+Defaults to
+.B FALSE
+while unset. The
+.BR slapd.conf (5)
+equivalent is
+.BR passReplication .
+.RE
+
+.SH VARIANT CONFIGURATION ENTRY
+
+The
+.B regular variant entry
+configuration
+.RB ( olcVariantVariant )
+has the following options available:
+
+.RS
+.TP
+.B olcVariantEntry: <dn>
+Mandatory attribute, indicates that the named entry is to be treated as a
+.B variant
+entry. The
+.BR slapd.conf (5)
+equivalent is
+.BR variantDN .
+.TP
+.B name: <reference>
+Name of the entry for reference, usually the attribute present in the
+configuration entry's RDN. There is no
+.BR slapd.conf (5)
+equivalent as this has no effect on the overlay operation.
+.RE
+
+Similarly, the
+.B regex variant entry
+configuration
+.RB ( olcVariantRegex )
+has these options available:
+
+.RS
+.TP
+.B olcVariantRegex: <regex>
+Mandatory attribute, indicates that the entries whose normalised DN matches is
+to be treated as a
+.B regex variant
+entry. The (POSIX.2) regex can use submatches to capture parts of the DN for
+later use in locating the
+.B alternative
+.BR entry .
+The
+.BR slapd.conf (5)
+equivalent is
+.BR variantRegex .
+.TP
+.B name: <reference>
+Name of the entry for reference, usually the attribute present in the
+configuration entry's RDN. There is no
+.BR slapd.conf (5)
+equivalent as this has no effect on the overlay operation.
+.RE
+
+.SH CONFIGURATION PRECEDENCE
+
+While several
+.B regex variants
+can match the same entry, only one can apply at a time. The list of the
+.B regular variants
+is checked first. Should none match, the list of
+.B regex variants
+is checked in the order they have been configured using only the first one that
+matches.
+
+.SH VARIANT ATTRIBUTE CONFIGURATION ENTRY
+
+The
+.B regular variant
+attribute configuration
+.RB ( olcVariantAttribute )
+and
+.B regex variant
+attribute configuration
+.RB ( olcVariantAttributePattern )
+have the following options available:
+
+.RS
+.TP
+.B name: <reference>
+Name of the attribute configuration for reference and/or documentation, if
+present, usually found in the configuration entry's RDN. There is no
+.BR slapd.conf (5)
+equivalent as this has no effect on the overlay operation.
+.TP
+.B olcVariantVariantAttribute: <attr>
+Mandatory attribute, indicates that the named attribute is not present in
+the
+.B variant
+entry but is to be retrieved from the
+.B alternate
+entry.
+.TP
+.B olcVariantAlternativeAttribute: <attr>
+Mandatory attribute, indicates that the values of the named attribute is to
+be retrieved from the
+.B alternate
+entry for use as the values of the
+.B variant
+attribute. The syntaxes of the corresponding
+.B variant
+and
+.B alternate
+attributes have to match or the configuration will be rejected.
+.TP
+.B olcVariantAlternativeEntry: <dn>
+Attribute mandatory for
+.B regular
+.BR variants ,
+indicates the
+.B alternate
+entry to use when retrieving the attribute from.
+.TP
+.B olcVariantAlternativeEntryPattern: <pattern>
+Attribute mandatory for
+.B regex
+.BR variants ,
+indicates the
+.B alternate
+entry to use when retrieving the attribute from. Substitution patterns
+.RB ( $n )
+can be used to insert parts of the variant entry's DN.
+.B $0
+will place the entire variant DN,
+.B $1
+to
+.B $9
+can be used to place respective capture patterns from the
+.B variant
+entry.
+.TP
+.B variantSpec <attr> <attr2> <dn>
+.BR slapd.conf (5)
+only. The equivalent to options above, where
+.B <attr>
+represents the
+.BR olcVariantVariantAttribute ,
+.B <attr2>
+represents the
+.B olcVariantAlternativeAttribute
+and
+.B <dn>
+has the same meaning as the content of
+.BR olcVariantAlternativeEntry .
+Has to follow a
+.B variantDN
+line in the overlay's configuration.
+.TP
+.B variantRegexSpec <attr> <attr2> <pattern>
+.BR slapd.conf (5)
+only. The equivalent to options above, where
+.B <attr>
+represents the
+.BR olcVariantVariantAttribute ,
+.B <attr2>
+represents the
+.B olcVariantAlternativeAttribute
+and
+.B <pattern>
+has the same meaning as the content of
+.BR olcVariantAlternativeEntryPattern .
+Has to follow a
+.B variantRegex
+line in the overlay's configuration.
+.RE
+
+.SH EXAMPLE
+
+The following is an example of a configured overlay, substitute
+.B $DATABASE
+for the DN of the database it is attached to and
+.B {x}
+with the desired position of the overlay in the overlay stack.
+
+.nf
+dn: olcOverlay={x}variant,$DATABASE
+objectClass: olcVariantConfig
+olcOverlay: variant
+# Let replication requests pass through unmodified
+olcVariantPassReplication: TRUE
+
+# when an operation considers dc=example,dc=com
+dn: name=example,olcOverlay={x}variant,$DATABASE
+objectClass: olcVariantVariant
+olcVariantEntry: dc=example,dc=com
+
+# share the Headquarters' address as the company address
+dn: olcVariantVariantAttribute=postaladdress,name={0}example,olcOverlay={x}variant,$DATABASE
+objectClass: olcVariantVariantAttribute
+olcVariantVariantAttribute: postaladdress
+olcVariantAlternativeAttribute: postaladdress
+olcVariantAlternativeEntry: ou=Headquarters,dc=example,dc=com
+
+# populate telephonenumber from CEO's home phone
+dn: name=Take phone from CEO entry,name={0}example,olcOverlay={x}variant,$DATABASE
+objectClass: olcVariantVariantAttribute
+olcVariantVariantAttribute: telephonenumber
+olcVariantAlternativeAttribute: homephone
+olcVariantAlternativeEntry: cn=John Doe,ou=People,dc=example,dc=com
+
+# Match all entries with example in the DN
+#
+# It will not match dc=example,dc=com as that's already configured as a regular
+# variant
+dn: name=example 2,olcOverlay={x}variant,$DATABASE
+objectClass: olcVariantRegex
+olcVariantEntryRegex: .*example[^,]*,(.*)
+
+dn: olcVariantVariantAttribute=location,name={1}example 2,olcOverlay={x}variant,$DATABASE
+objectClass: olcVariantAttributePattern
+olcVariantVariantAttribute: location
+olcVariantAlternativeAttribute: location
+olcVariantAlternativeEntryPattern: ou=object with location,$1
+.fi
+
+The
+.BR slapd.conf (5)
+equivalent of the above follows (note that the converted
+.B cn=config
+will differ in the first variant attribute configuration entry):
+
+.nf
+overlay variant
+passReplication TRUE
+
+variantDN dc=example,dc=com
+variantSpec telephonenumber homephone "cn=John Doe,ou=People,dc=example,dc=com"
+variantSpec postaladdress postaladdress ou=Headquarters,dc=example,dc=com
+
+variantRegex .*example[^,]*,(.*)
+variantRegexSpec location location "ou=object with location,$1"
+.fi
+
+.SH REPLICATION
+
+There are two ways that a database with
+.BR slapo-variant (5)
+might be replicated, either replicating the data as stored in the database,
+or as seen by the clients interacting with the server.
+
+The former can be achieved by setting the overlay option
+.B olcVariantPassReplication
+on the provider and configuring
+.BR slapo-syncprov (5)
+to appear before (with a lower index than)
+.BR slapo-variant (5).
+This is the preferred way and the only to work with
+.B regex variants
+or support multi-provider replication,
+but care must be taken to configure
+.BR slapo-variant (5)
+correctly on each replica.
+
+The latter is mostly possible by keeping the option
+.B olcVariantPassReplication
+set to
+.B FALSE
+on the provider and configuring
+.BR slapo-syncprov (5)
+to appear after (with a higher index than)
+.BR slapo-variant (5).
+However, it will only really work for replication set-ups that do not
+utilise
+.B regex
+.BR variants ,
+delta-replication nor the refresh and persist mode and is therefore
+discouraged.
+
+.SH LIMITATIONS
+For
+.B regex
+.BR variants ,
+the
+.B Search
+operation will only apply if the search scope is set to
+.BR base .
+
+The
+.B ModRDN
+operation is not currently handled and will always modify only the entry in
+question, not the configured
+.B alternate
+entry.
+
+The
+.B Modify
+operation is not atomic with respect to the alternate entries. Currently,
+the overlay processes the operations on the entry, sends the result message
+and, if successful, starts modifying the
+.B alternate
+entries accordingly.
+There is currently no support to indicate whether modifications to the
+.B alternate
+entries have been successful or whether they have finished.
+
+The only control explicitly handled is the
+.B SyncReplication
+control if enabled through the
+.B olcVariantPassReplication
+setting, adding any controls to an operation that is handled by the overlay
+might lead to unexpected behaviour and is therefore discouraged.
+
+.SH FILES
+.TP
+ETCDIR/slapd.conf
+default slapd configuration file
+.TP
+ETCDIR/slapd.d
+default slapd configuration directory
+.SH SEE ALSO
+.BR slapd-config (5),
+.BR slapd.conf (5),
+.BR slapd.overlays (5),
+.BR regex (7),
+.BR slapd (8)
+.SH ACKNOWLEDGEMENTS
+This module was developed in 2016-2017 by Ondřej Kuzník for Symas Corp.
diff --git a/contrib/slapd-modules/variant/tests/Rules.mk b/contrib/slapd-modules/variant/tests/Rules.mk
new file mode 100644
index 0000000..c25c1d2
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/Rules.mk
@@ -0,0 +1,23 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+.PHONY: test
+
+CLEAN += clients servers tests/progs tests/schema tests/testdata tests/testrun
+
+test: all clients servers tests/progs
+
+test:
+	cd tests; \
+		SRCDIR=$(abspath $(LDAP_SRC)) \
+		LDAP_BUILD=$(abspath $(LDAP_BUILD)) \
+		TOPDIR=$(abspath $(SRCDIR)) \
+		LIBTOOL=$(abspath $(LIBTOOL)) \
+			$(abspath $(SRCDIR))/tests/run all
+
+servers clients tests/progs:
+	ln -s $(abspath $(LDAP_BUILD))/$@ $@
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))
diff --git a/contrib/slapd-modules/variant/tests/data/additional-config.ldif b/contrib/slapd-modules/variant/tests/data/additional-config.ldif
new file mode 100644
index 0000000..6a286fe
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/additional-config.ldif
@@ -0,0 +1,23 @@
+dn: name={4}test002,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+
+dn: name=attribute 1,name={4}test002,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantVariantAttribute: cn
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: dc=example,dc=com
+
+dn: name=attribute 2,name={4}test002,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantVariantAttribute: pager
+olcVariantAlternativeAttribute: telephonenumber
+olcVariantAlternativeEntry: dc=example,dc=com
+
+dn: name={0}attribute 1,name={4}test002,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcVariantVariantAttribute
+olcVariantVariantAttribute: description
diff --git a/contrib/slapd-modules/variant/tests/data/config.ldif b/contrib/slapd-modules/variant/tests/data/config.ldif
new file mode 100644
index 0000000..6e323b9
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/config.ldif
@@ -0,0 +1,89 @@
+dn: olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectClass: olcOverlayConfig
+objectclass: olcVariantConfig
+
+dn: olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcVariantPassReplication
+olcVariantPassReplication: TRUE
+
+dn: name={0}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: ou=People,dc=example,dc=com
+
+# a basic variant
+dn: olcVariantVariantAttribute=description,name={0}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: dc=example,dc=com
+
+# a nonexistent alternate
+dn: olcVariantVariantAttribute=seealso,name={0}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: seealso
+olcVariantAlternativeEntry: ou=Societies,dc=example,dc=com
+
+dn: name={1}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: ou=Groups,dc=example,dc=com
+
+# recursive retrieval is not done
+dn: olcVariantVariantAttribute=description,name={1}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: ou=People,dc=example,dc=com
+
+# a variant taking data from a different attribute (after the changes below)
+dn: olcVariantVariantAttribute=st,name={1}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: st
+olcVariantAlternativeEntry: cn=Manager,dc=example,dc=com
+
+# configuration changes
+dn: olcVariantVariantAttribute={1}st,name={1}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcVariantAlternativeAttribute
+olcVariantAlternativeAttribute: ou
+-
+replace: olcVariantAlternativeEntry
+olcVariantAlternativeEntry: ou=Alumni Association,ou=People,dc=example,dc=com
+-
+
+# a regex variant
+dn: name={2}regex,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantRegex
+olcVariantEntryRegex: (.*),(ou=.*technology.*)(,)dc=example,dc=com
+
+dn: olcVariantVariantAttribute=ou,name={2}regex,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttributePattern
+olcVariantAlternativeAttribute: ou
+olcVariantAlternativeEntryPattern: $2$3dc=example$3dc=com
+
+# Duplicate description into title
+dn: olcVariantVariantAttribute=title,name={2}regex,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttributePattern
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntryPattern: $0
+
+# everything
+dn: name={3}regex,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantRegex
+olcVariantEntryRegex: .*
+
+dn: olcVariantVariantAttribute=l,name={3}regex,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttributePattern
+olcVariantAlternativeAttribute: l
+olcVariantAlternativeEntryPattern: dc=example,dc=com
+
diff --git a/contrib/slapd-modules/variant/tests/data/hidden.ldif b/contrib/slapd-modules/variant/tests/data/hidden.ldif
new file mode 100644
index 0000000..d219746
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/hidden.ldif
@@ -0,0 +1,4 @@
+dn: ou=Groups,dc=example,dc=com
+changetype: modify
+add: description
+description: This is hidden by the overlay config
diff --git a/contrib/slapd-modules/variant/tests/data/test001-01-same-dn.ldif b/contrib/slapd-modules/variant/tests/data/test001-01-same-dn.ldif
new file mode 100644
index 0000000..880e035
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test001-01-same-dn.ldif
@@ -0,0 +1,4 @@
+dn: name=variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: ou=Groups,dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/data/test001-01a-same-dn.ldif b/contrib/slapd-modules/variant/tests/data/test001-01a-same-dn.ldif
new file mode 100644
index 0000000..0fb8b2b
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test001-01a-same-dn.ldif
@@ -0,0 +1,4 @@
+dn: name={0}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcVariantEntry
+olcVariantEntry: ou=Groups,dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/data/test001-02-same-attribute.ldif b/contrib/slapd-modules/variant/tests/data/test001-02-same-attribute.ldif
new file mode 100644
index 0000000..8447018
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test001-02-same-attribute.ldif
@@ -0,0 +1,6 @@
+dn: olcVariantAlternativeAttribute=description,name={1}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantVariantAttribute: description
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: ou=People,dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/data/test001-03-different-types.ldif b/contrib/slapd-modules/variant/tests/data/test001-03-different-types.ldif
new file mode 100644
index 0000000..dfbde5b
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test001-03-different-types.ldif
@@ -0,0 +1,4 @@
+dn: olcVariantVariantAttribute={1}st,name={1}variant,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: modify
+replace: olcVariantAlternativeAttribute
+olcVariantAlternativeAttribute: userPassword
diff --git a/contrib/slapd-modules/variant/tests/data/test002-01-entry.ldif b/contrib/slapd-modules/variant/tests/data/test002-01-entry.ldif
new file mode 100644
index 0000000..21b5b14
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test002-01-entry.ldif
@@ -0,0 +1,16 @@
+dn: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+changetype: add
+objectclass: testPerson
+cn: Gern Jensen
+sn: Jensen
+uid: gjensen
+postaladdress: ITD $ 535 W. William St $ Anytown, MI 48103
+seealso: cn=All Staff,ou=Groups,dc=example,dc=com
+drink: Coffee
+homepostaladdress: 844 Brown St. Apt. 4 $ Anytown, MI 48104
+description: Very odd
+facsimiletelephonenumber: +1 313 555 7557
+telephonenumber: +1 313 555 8343
+mail: gjensen@mailgw.example.com
+homephone: +1 313 555 8844
+testTime: 20050304001801.234Z
diff --git a/contrib/slapd-modules/variant/tests/data/test002-02-regex.ldif b/contrib/slapd-modules/variant/tests/data/test002-02-regex.ldif
new file mode 100644
index 0000000..8f0f439
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test002-02-regex.ldif
@@ -0,0 +1,7 @@
+dn: cn=Rosco P. Coltrane, ou=Information Technology Division, ou=People, dc=example,dc=com
+changetype: add
+objectclass: OpenLDAPperson
+cn: Rosco P. Coltrane
+sn: Coltrane
+uid: rosco
+title: Chief Investigator, ITD
diff --git a/contrib/slapd-modules/variant/tests/data/test003-out.ldif b/contrib/slapd-modules/variant/tests/data/test003-out.ldif
new file mode 100644
index 0000000..1c3ca5d
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test003-out.ldif
@@ -0,0 +1,124 @@
+# Test 1, list two unrelated entries
+dn: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: Mark Elliot
+cn: Mark A Elliot
+sn: Elliot
+uid: melliot
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 199 Outer Drive $ Ypsilanti, MI 48198
+homePhone: +1 313 555 0388
+drink: Gasoline
+title: Director, UM Alumni Association
+mail: melliot@mail.alumni.example.com
+pager: +1 313 555 7671
+facsimileTelephoneNumber: +1 313 555 7762
+telephoneNumber: +1 313 555 4177
+
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+title: Director, Embedded Systems
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+
+
+# Test 2, list some of the variant entries, checking that attributes have been populated
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+st: Alumni Association
+
+dn: ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+objectClass: extensibleObject
+ou: People
+uidNumber: 0
+gidNumber: 0
+description: The Example, Inc. at Anytown
+
+dn: cn=Manager,dc=example,dc=com
+objectClass: person
+cn: Manager
+cn: Directory Manager
+cn: Dir Man
+sn: Manager
+description: Manager of the directory
+userPassword:: c2VjcmV0
+
+
+# Return $BASEDN, location is rewritten to end
+dn: dc=example,dc=com
+objectClass: top
+objectClass: organization
+objectClass: domainRelatedObject
+objectClass: dcObject
+dc: example
+st: Michigan
+o: Example, Inc.
+o: EX
+o: Ex.
+description: The Example, Inc. at Anytown
+postalAddress: Example, Inc. $ 535 W. William St. $ Anytown, MI 48109 $ US
+telephoneNumber: +1 313 555 1817
+associatedDomain: example.com
+l: Anytown, Michigan
+
+
+# Make sure only the first regex applies
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+title: Hiker, biker
+ou: Information Technology Division
+
+
+# Exercise the last regex
+dn: cn=ITD Staff,ou=Groups,dc=example,dc=com
+owner: cn=Manager,dc=example,dc=com
+description: All ITD Staff
+cn: ITD Staff
+objectClass: groupOfUniqueNames
+uniqueMember: cn=Manager,dc=example,dc=com
+uniqueMember: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=
+ example,dc=com
+uniqueMember: cn=James A Jones 2,ou=Information Technology Division,ou=People,
+ dc=example,dc=com
+uniqueMember: cn=John Doe,ou=Information Technology Division,ou=People,dc=exam
+ ple,dc=com
+l: Anytown, Michigan
+
+
+# Test 3, check filters pick up the new data
+dn: ou=Groups,dc=example,dc=com
+st: Alumni Association
+
diff --git a/contrib/slapd-modules/variant/tests/data/test005-changes.ldif b/contrib/slapd-modules/variant/tests/data/test005-changes.ldif
new file mode 100644
index 0000000..767f48a
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test005-changes.ldif
@@ -0,0 +1,35 @@
+dn: ou=People,dc=example,dc=com
+changetype: modify
+add: description
+description: Everyone's heard of them
+-
+increment: uidNumber
+uidNumber: 1
+-
+
+dn: ou=Groups,dc=example,dc=com
+changetype: modify
+add: st
+st: Alabama
+-
+
+# check regex
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+changetype: modify
+replace: description
+description: A mouthful
+-
+add: ou
+ou: The IT Crowd
+-
+
+# have the two mods merge
+dn: dc=example,dc=com
+changetype: modify
+add: l
+l: Locally
+-
+replace: st
+st: Antarctica
+-
diff --git a/contrib/slapd-modules/variant/tests/data/test005-modify-missing.ldif b/contrib/slapd-modules/variant/tests/data/test005-modify-missing.ldif
new file mode 100644
index 0000000..ce9c007
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test005-modify-missing.ldif
@@ -0,0 +1,4 @@
+dn: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+changetype: modify
+replace: description
+description: Ghost
diff --git a/contrib/slapd-modules/variant/tests/data/test005-out.ldif b/contrib/slapd-modules/variant/tests/data/test005-out.ldif
new file mode 100644
index 0000000..67e441b
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test005-out.ldif
@@ -0,0 +1,206 @@
+# Test1: list entries that should have been changed by ldapmodify
+dn: dc=example,dc=com
+objectclass: top
+objectclass: organization
+objectclass: domainRelatedObject
+objectclass: dcobject
+dc: example
+l: Anytown, Michigan
+l: Locally
+o: Example, Inc.
+o: EX
+o: Ex.
+description: The Example, Inc. at Anytown
+description: Everyone's heard of them
+postaladdress: Example, Inc. $ 535 W. William St. $ Anytown, MI 48109 $ US
+telephonenumber: +1 313 555 1817
+associateddomain: example.com
+st: Antarctica
+
+dn: ou=People,dc=example,dc=com
+objectclass: organizationalUnit
+objectclass: extensibleObject
+ou: People
+uidNumber: 1
+gidNumber: 0
+description: The Example, Inc. at Anytown
+description: Everyone's heard of them
+
+dn: ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Alumni Association
+ou: Alabama
+
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+st: alumni association
+st: alabama
+
+dn: ou=Information Technology Division,ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Information Technology Division
+ou: The IT Crowd
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+ KDw4PCgsOCwr9TYMODwoPDgsKCw4PCgsOCwovDg8KDw4LCg8ODwoLDgsK4w4PCg8OCwoLDg8KCw4L
+ ChcODwoPDgsKDw4PCgsOCwr/Dg8KDw4LCgsODwoLDgsKEw4PCg8OCwoPDg8KCw4LCkMODwoPDgsKC
+ w4PCgsOCwovDg8KDw4LCgsODwoLDgsKLw4PCg8OCwoPDg8KCw4LCj8ODwoPDgsKDw4PCgsOCwr9Ta
+ MODwoPDgsKCw4PCgsOCwolEJDvDg8KDw4LCg8ODwoLDgsKGw4PCg8OCwoLDg8KCw4LChMODwoPDgs
+ KCw4PCgsOCwr3Dg8KDw4LCgsODwoLDgsKNRCTDg8KDw4LCgsODwoLDgsKLw4PCg8OCwoPDg8KCw4L
+ Cj1DDg8KDw4LCg8ODwoLDgsK/U2zDg8KDw4LCgsODwoLDgsKLw4PCg8OCwoPDg8KCw4LCqMODwoPD
+ gsKCw4PCgsOCwoXDg8KDw4LCg8ODwoLDgsKtw4PCg8OCwoLDg8KCw4LChMODwoPDgsKCw4PCgsOCw
+ p9oMMODwoPDgsKDw4PCgsOCwolMw4PCg8OCwoLDg8KCw4LCi8ODwoPDgsKDw4PCgsOCwo3Dg8KDw4
+ LCg8ODwoLDgsKow4PCg8OCwoPDg8KCw4LCq0vDg8KDw4LCgsODwoLDgsKFw4PCg8OCwoPDg8KCw4L
+ CgMODwoPDgsKCw4PCgsOCwoTDg8KDw4LCgsODwoLDgsKLw4PCg8OCwoLDg8KCw4LCi0QkOcODwoPD
+ gsKCw4PCgsOCwrDDg8KDw4LCg8ODwoLDgsKEdEU5w4PCg8OCwoLDg8KCw4LCtTR0PcODwoPDgsKCw
+ 4PCgsOCwovDg8KDw4LCg8ODwoLDgsKNw4PCg8OCwoPDg8KCw4LCqMODwoPDgsKDw4PCgsOCwo5Lw4
+ PCg8OCwoLDg8KCw4LCi0AgUMODwoPDgsKDw4PCgsOCwr/Dg8KDw4LCgsODwoLDgsKsw4PCg8OCwoL
+ Dg8KCw4LCik/Dg8KDw4LCgsODwoLDgsKFw4PCg8OCwoPDg8KCw4LCgHUow4PCg8OCwoLDg8KCw4LC
+ i8ODwoPDgsKDw4PCgsOCwo3Dg8KDw4LCgsODwoLDgsKJw4PCg8OCwoLDg8KCw4LCtTTDg8KDw4LCg
+ 8ODwoLDgsKow4PCg8OCwoPDg8KCw4LCl8ODwoPDgsKDw4PCgsOCwrtWw4PCg8OCwoLDg8KCw4LCi8
+ ODwoPDgsKDw4PCgsOCwo3Dg8KDw4LCg8ODwoLDgsKow4PCg8OCwoLDg8KCw4LCnw==
+
+
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+title: Hiker, biker
+ou: Information Technology Division
+ou: The IT Crowd
+
diff --git a/contrib/slapd-modules/variant/tests/data/test005-variant-missing.ldif b/contrib/slapd-modules/variant/tests/data/test005-variant-missing.ldif
new file mode 100644
index 0000000..54fd3a5
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test005-variant-missing.ldif
@@ -0,0 +1,4 @@
+dn: ou=People,dc=example,dc=com
+changetype: modify
+replace: seealso
+seealso: dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/data/test006-config.ldif b/contrib/slapd-modules/variant/tests/data/test006-config.ldif
new file mode 100644
index 0000000..c668134
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test006-config.ldif
@@ -0,0 +1,61 @@
+dn: name={4}Mark,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=description,name={4}Mark,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: cn
+olcVariantAlternativeEntry: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+
+dn: name={5}Elliot,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: sn=Elliot,ou=Add & Delete,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=title,name={5}Elliot,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: cn
+olcVariantAlternativeEntry: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=description,name={5}Elliot,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: cn=Added by Bjorn,ou=Add & Delete,dc=example,dc=com
+
+dn: name={6}Doe,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: sn=Doe,ou=Add & Delete,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=title,name={6}Doe,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: cn
+olcVariantAlternativeEntry: cn=John Doe,ou=Information Technology Division,ou=People,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=description,name={6}Doe,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: cn=Added by Bjorn,ou=Add & Delete,dc=example,dc=com
+
+dn: name={7}Group,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantVariant
+olcVariantEntry: cn=Group,ou=Add & Delete,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=seeAlso,name={7}Group,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: member
+olcVariantAlternativeEntry: cn=Alumni Assoc Staff,ou=Groups,dc=example,dc=com
+
+dn: olcVariantVariantAttribute=description,name={7}Group,olcOverlay={0}variant,olcDatabase={1}@BACKEND@,cn=config
+changetype: add
+objectclass: olcVariantAttribute
+olcVariantAlternativeAttribute: description
+olcVariantAlternativeEntry: cn=Alumni Assoc Staff,ou=Groups,dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/data/test006-out.ldif b/contrib/slapd-modules/variant/tests/data/test006-out.ldif
new file mode 100644
index 0000000..03910c0
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test006-out.ldif
@@ -0,0 +1,151 @@
+# reading Mark Elliot as anonymous
+
+# reading the same as various users
+dn: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: Mark A Elliot
+sn: Elliot
+uid: melliot
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 199 Outer Drive $ Ypsilanti, MI 48198
+homePhone: +1 313 555 0388
+drink: Gasoline
+title: Director, UM Alumni Association
+mail: melliot@mail.alumni.example.com
+pager: +1 313 555 7671
+facsimileTelephoneNumber: +1 313 555 7762
+telephoneNumber: +1 313 555 4177
+description: Mark A Elliot
+
+dn: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: Mark Elliot
+sn: Elliot
+uid: melliot
+postalAddress: Alumni Association $ 111 Maple St $ Anytown, MI 48109
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+homePostalAddress: 199 Outer Drive $ Ypsilanti, MI 48198
+homePhone: +1 313 555 0388
+drink: Gasoline
+title: Director, UM Alumni Association
+mail: melliot@mail.alumni.example.com
+pager: +1 313 555 7671
+facsimileTelephoneNumber: +1 313 555 7762
+telephoneNumber: +1 313 555 4177
+description: Mark Elliot
+
+
+# Add & Delete subtree contents as seen by Babs
+dn: ou=Add & Delete,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Add & Delete
+
+dn: sn=Doe,ou=Add & Delete,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: John
+uid: jd
+sn: Doe
+title: John Doe
+
+dn: sn=Elliot,ou=Add & Delete,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: Mark
+uid: me
+sn: Elliot
+title: Mark A Elliot
+
+dn: cn=group,ou=Add & Delete,dc=example,dc=com
+objectClass: groupOfNames
+member: dc=example,dc=com
+cn: group
+description: All Alumni Assoc Staff
+seeAlso: cn=Manager,dc=example,dc=com
+seeAlso: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+
+
+# Add & Delete subtree contents as seen by Bjorn
+dn: ou=Add & Delete,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Add & Delete
+
+dn: sn=Doe,ou=Add & Delete,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: John
+uid: jd
+sn: Doe
+title: Jonathon Doe
+
+dn: sn=Elliot,ou=Add & Delete,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: Mark
+uid: me
+sn: Elliot
+title: Mark Elliot
+
+dn: cn=group,ou=Add & Delete,dc=example,dc=com
+objectClass: groupOfNames
+member: dc=example,dc=com
+cn: group
+description: All Alumni Assoc Staff
+seeAlso: cn=Manager,dc=example,dc=com
+seeAlso: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+
+
+# Final state of ou=Add & Delete,dc=example,dc=com as seen by the Manager
+dn: ou=Add & Delete,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Add & Delete
+
+dn: cn=Added by Bjorn,ou=Add & Delete,dc=example,dc=com
+objectClass: inetOrgPerson
+sn: Jensen
+cn: Added by Bjorn
+description: added by jaj (should succeed)
+
+dn: sn=Doe,ou=Add & Delete,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: John
+uid: jd
+sn: Doe
+description: added by jaj (should succeed)
+title: John Doe
+title: Jonathon Doe
+
+dn: sn=Elliot,ou=Add & Delete,dc=example,dc=com
+objectClass: OpenLDAPperson
+cn: Mark
+uid: me
+sn: Elliot
+description: added by jaj (should succeed)
+title: Mark Elliot
+title: Mark A Elliot
+
+dn: cn=group,ou=Add & Delete,dc=example,dc=com
+objectClass: groupOfNames
+member: dc=example,dc=com
+cn: group
+description: All Alumni Assoc Staff
+description: another one added by bjorn (should succeed)
+seeAlso: cn=Manager,dc=example,dc=com
+seeAlso: cn=Dorothy Stevens,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=James A Jones 1,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Jane Doe,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Jennifer Smith,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Mark Elliot,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Ursula Hampster,ou=Alumni Association,ou=People,dc=example,dc=com
+seeAlso: cn=Bjorn Jensen,ou=Information Technology DivisioN,ou=People,dc=examp
+ le,dc=com
+seeAlso: cn=Barbara Jensen,ou=Information Technology DivisioN,ou=People,dc=exa
+ mple,dc=com
+
diff --git a/contrib/slapd-modules/variant/tests/data/test007-out.ldif b/contrib/slapd-modules/variant/tests/data/test007-out.ldif
new file mode 100644
index 0000000..cf1aac8
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test007-out.ldif
@@ -0,0 +1,6 @@
+# Testing searches against attribute supertypes...
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+st: Alumni Association
+
diff --git a/contrib/slapd-modules/variant/tests/data/test010-out.ldif b/contrib/slapd-modules/variant/tests/data/test010-out.ldif
new file mode 100644
index 0000000..28603e1
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test010-out.ldif
@@ -0,0 +1,52 @@
+# Test 1, trigger sizelimit without overlay interference
+dn: cn=Bjorn Jensen,ou=Information Technology Division,ou=People,dc=example,dc
+ =com
+objectClass: OpenLDAPperson
+cn: Bjorn Jensen
+cn: Biiff Jensen
+sn: Jensen
+uid: bjorn
+seeAlso: cn=All Staff,ou=Groups,dc=example,dc=com
+userPassword:: Ympvcm4=
+homePostalAddress: 19923 Seven Mile Rd. $ South Lyon, MI 49999
+drink: Iced Tea
+description: Hiker, biker
+title: Director, Embedded Systems
+postalAddress: Info Tech Division $ 535 W. William St. $ Anytown, MI 48103
+mail: bjorn@mailgw.example.com
+homePhone: +1 313 555 5444
+pager: +1 313 555 4474
+facsimileTelephoneNumber: +1 313 555 2177
+telephoneNumber: +1 313 555 0355
+Size limit exceeded (4)
+
+# Test 2, check sizelimit is not triggered when it matches the number of entries returned
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+st: Alumni Association
+
+dn: ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+objectClass: extensibleObject
+ou: People
+uidNumber: 0
+gidNumber: 0
+description: The Example, Inc. at Anytown
+
+dn: cn=Manager,dc=example,dc=com
+objectClass: person
+cn: Manager
+cn: Directory Manager
+cn: Dir Man
+sn: Manager
+description: Manager of the directory
+userPassword:: c2VjcmV0
+
+# Test 3, check sizelimit will stop at the right time
+dn: ou=Groups,dc=example,dc=com
+objectClass: organizationalUnit
+ou: Groups
+st: Alumni Association
+Size limit exceeded (4)
+
diff --git a/contrib/slapd-modules/variant/tests/data/test011-out.ldif b/contrib/slapd-modules/variant/tests/data/test011-out.ldif
new file mode 100644
index 0000000..07604f8
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test011-out.ldif
@@ -0,0 +1,10 @@
+# ldapsearch does not return anything tangible in the output if it enounters a referral
+
+# Asking for the referral will return LDAP_REFERRAL
+Referral (10)
+Matched DN: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+Referral: ldap://hostB/cn=Gern%20Jensen,ou=Information%20Technology%20Division,ou=People,dc=example,dc=com??sub
+# Asking for anything under a referral will do the same
+Referral (10)
+Matched DN: cn=Gern Jensen,ou=Information Technology Division,ou=People,dc=example,dc=com
+Referral: ldap://hostB/cn=child,cn=Gern%20Jensen,ou=Information%20Technology%20Division,ou=People,dc=example,dc=com??sub
diff --git a/contrib/slapd-modules/variant/tests/data/test012-data.ldif b/contrib/slapd-modules/variant/tests/data/test012-data.ldif
new file mode 100644
index 0000000..8b8d8b3
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test012-data.ldif
@@ -0,0 +1,13 @@
+dn: dc=demonstration,dc=com
+changetype: add
+objectclass: organization
+objectclass: domainRelatedObject
+objectclass: dcobject
+o: demo
+associateddomain: demonstration.com
+
+dn: ou=Societies,dc=demonstration,dc=com
+changetype: add
+objectclass: organizationalUnit
+ou: Societies
+seealso: dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/data/test012-out.ldif b/contrib/slapd-modules/variant/tests/data/test012-out.ldif
new file mode 100644
index 0000000..bd31fa0
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/test012-out.ldif
@@ -0,0 +1,9 @@
+dn: ou=People,dc=example,dc=com
+objectClass: organizationalUnit
+objectClass: extensibleObject
+ou: People
+uidNumber: 0
+gidNumber: 0
+seealso: dc=example,dc=com
+description: The Example, Inc. at Anytown
+
diff --git a/contrib/slapd-modules/variant/tests/data/variant.conf b/contrib/slapd-modules/variant/tests/data/variant.conf
new file mode 100644
index 0000000..dba6c46
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/data/variant.conf
@@ -0,0 +1,17 @@
+overlay variant
+passReplication TRUE
+
+variantDN ou=People,dc=example,dc=com
+variantSpec seealso seealso ou=Societies,dc=example,dc=com
+variantSpec description description dc=example,dc=com
+
+variantRegex "(.*),(ou=.*technology.*)(,)dc=example,dc=com"
+variantRegexSpec title description $0
+variantRegexSpec ou ou "$2$3dc=example$3dc=com"
+
+variantDN ou=Groups,dc=example,dc=com
+variantSpec st ou "ou=Alumni Association,ou=People,dc=example,dc=com"
+variantSpec description description ou=People,dc=example,dc=com
+
+variantRegex .*
+variantRegexSpec l l dc=example,dc=com
diff --git a/contrib/slapd-modules/variant/tests/run b/contrib/slapd-modules/variant/tests/run
new file mode 100755
index 0000000..6a38431
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/run
@@ -0,0 +1,229 @@
+#!/bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+USAGE="$0 [-b <backend>] [-c] [-k] [-l #] [-p] [-s {ro|rp}] [-u] [-w] <script>"
+
+TOPSRCDIR="${SRCDIR-$LDAP_SRC}"
+SRCDIR="${TOPSRCDIR}/tests"
+eval `grep EGREP_CMD= ${LDAP_BUILD}/tests/run`
+eval `$EGREP_CMD -e '^LN_S=' ${LDAP_BUILD}/tests/run`
+
+export SRCDIR TOPSRCDIR LN_S EGREP_CMD
+
+. "${SRCDIR}/scripts/defines.sh"
+
+BACKEND=
+CLEAN=no
+WAIT=0
+KILLSERVERS=yes
+PRESERVE=${PRESERVE-no}
+SYNCMODE=${SYNCMODE-rp}
+USERDATA=no
+LOOP=1
+COUNTER=1
+
+while test $# -gt 0 ; do
+	case "$1" in
+		-b | -backend)
+			BACKEND="$2"
+			shift; shift ;;
+
+		-c | -clean)
+			CLEAN=yes
+			shift ;;
+
+		-k | -kill)
+			KILLSERVERS=no
+			shift ;;
+		-l | -loop)
+			NUM="`echo $2 | sed 's/[0-9]//g'`"
+			if [ -z "$NUM" ]; then
+				LOOP=$2
+			else
+				echo "Loop variable not an int: $2"
+				echo "$USAGE"; exit 1
+			fi
+			shift ;
+			shift ;;
+
+		-p | -preserve)
+			PRESERVE=yes
+			shift ;;
+
+		-s | -syncmode)
+			case "$2" in
+				ro | rp)
+					SYNCMODE="$2"
+					;;
+				*)
+					echo "unknown sync mode $2"
+					echo "$USAGE"; exit 1
+					;;
+			esac
+			shift; shift ;;
+
+		-u | -userdata)
+			USERDATA=yes
+			shift ;;
+
+		-w | -wait)
+			WAIT=1
+			shift ;;
+
+		-)
+			shift
+			break ;;
+
+		-*)
+			echo "$USAGE"; exit 1
+			;;
+
+		*)
+			break ;;
+	esac
+done
+
+eval `$EGREP_CMD -e '^AC' ${LDAP_BUILD}/tests/run`
+export `$EGREP_CMD -e '^AC' ${LDAP_BUILD}/tests/run | sed 's/=.*//'`
+
+if test -z "$BACKEND" ; then
+	for b in mdb ; do
+		if eval "test \"\$AC_$b\" != no" ; then
+			BACKEND=$b
+			break
+		fi
+	done
+	if test -z "$BACKEND" ; then
+		echo "No suitable default database backend configured" >&2
+		exit 1
+	fi
+fi
+
+BACKENDTYPE=`eval 'echo $AC_'$BACKEND`
+if test "x$BACKENDTYPE" = "x" ; then
+	BACKENDTYPE="unknown"
+fi
+
+# Backend features.  indexdb: indexing and unchecked limit.
+# maindb: main storage backend.  Currently index,limits,mode,paged results.
+INDEXDB=noindexdb MAINDB=nomaindb
+case $BACKEND in
+	mdb) INDEXDB=indexdb MAINDB=maindb ;;
+	ndb) INDEXDB=indexdb ;;
+esac
+
+export	BACKEND BACKENDTYPE INDEXDB MAINDB \
+	WAIT KILLSERVERS PRESERVE SYNCMODE USERDATA \
+	SRCDIR
+
+if test $# = 0 ; then
+	echo "$USAGE"; exit 1
+fi
+
+# need defines.sh for the definitions of the directories
+. $SRCDIR/scripts/defines.sh
+
+SCRIPTDIR="${TOPDIR}/tests/scripts"
+
+export SCRIPTDIR
+
+SCRIPTNAME="$1"
+shift
+
+if test -x "${SCRIPTDIR}/${SCRIPTNAME}" ; then
+	SCRIPT="${SCRIPTDIR}/${SCRIPTNAME}"
+elif test -x "`echo ${SCRIPTDIR}/test*-${SCRIPTNAME}`"; then
+	SCRIPT="`echo ${SCRIPTDIR}/test*-${SCRIPTNAME}`"
+elif test -x "`echo ${SCRIPTDIR}/${SCRIPTNAME}-*`"; then
+	SCRIPT="`echo ${SCRIPTDIR}/${SCRIPTNAME}-*`"
+else
+	echo "run: ${SCRIPTNAME} not found (or not executable)"
+	exit 1;
+fi
+
+if test ! -r ${DATADIR}/test.ldif ; then
+	${LN_S} ${SRCDIR}/data ${DATADIR}
+fi
+if test ! -r ${SCHEMADIR}/core.schema ; then
+	${LN_S} ${TOPSRCDIR}/servers/slapd/schema ${SCHEMADIR}
+fi
+if test ! -r ./data; then
+	${LN_S} ${TOPDIR}/tests/data ./
+fi
+
+if test -d ${TESTDIR} ; then
+	if test $PRESERVE = no ; then
+		echo "Cleaning up test run directory leftover from previous run."
+		/bin/rm -rf ${TESTDIR}
+	elif test $PRESERVE = yes ; then
+		echo "Cleaning up only database directories leftover from previous run."
+		/bin/rm -rf ${TESTDIR}/db.*
+	fi
+fi
+if test $BACKEND = ndb ; then
+	mysql --user root <<EOF
+	drop database if exists db_1;
+	drop database if exists db_2;
+	drop database if exists db_3;
+	drop database if exists db_4;
+	drop database if exists db_5;
+	drop database if exists db_6;
+EOF
+fi
+mkdir -p ${TESTDIR}
+
+if test $USERDATA = yes ; then
+	if test ! -d userdata ; then
+		echo "User data directory (userdata) does not exist."
+		exit 1
+	fi
+	cp -R userdata/* ${TESTDIR}
+fi
+
+# disable LDAP initialization
+LDAPNOINIT=true; export LDAPNOINIT
+
+echo "Running ${SCRIPT} for ${BACKEND}..."
+while [ $COUNTER -le $LOOP ]; do
+	if [ $LOOP -gt 1 ]; then
+		echo "Running $COUNTER of $LOOP iterations"
+	fi
+	$SCRIPT $*
+	RC=$?
+
+	if test $CLEAN = yes ; then
+		echo "Cleaning up test run directory from this run."
+		/bin/rm -rf ${TESTDIR}
+		echo "Cleaning up symlinks."
+		/bin/rm -f ${DATADIR} ${SCHEMADIR}
+	fi
+
+	if [ $RC -ne 0 ]; then
+		if [ $LOOP -gt 1 ]; then
+			echo "Failed after $COUNTER of $LOOP iterations"
+		fi
+		exit $RC
+	else
+		COUNTER=`expr $COUNTER + 1`
+		if [ $COUNTER -le $LOOP ]; then
+			echo "Cleaning up test run directory from this run."
+			/bin/rm -rf ${TESTDIR}
+		fi
+	fi
+done
+exit $RC
diff --git a/contrib/slapd-modules/variant/tests/scripts/all b/contrib/slapd-modules/variant/tests/scripts/all
new file mode 100755
index 0000000..d6d6dc7
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/all
@@ -0,0 +1,102 @@
+#! /bin/sh
+# $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 1998-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+
+. $SRCDIR/scripts/defines.sh
+
+TB="" TN=""
+if test -t 1 ; then
+	TB=`$SHTOOL echo -e "%B" 2>/dev/null`
+	TN=`$SHTOOL echo -e "%b" 2>/dev/null`
+fi
+
+FAILCOUNT=0
+SKIPCOUNT=0
+SLEEPTIME=10
+
+echo ">>>>> Executing all LDAP tests for $BACKEND"
+
+if [ -n "$NOEXIT" ]; then
+	echo "Result	Test" > $TESTWD/results
+fi
+
+for CMD in ${SCRIPTDIR}/test*; do
+	case "$CMD" in
+		*~)		continue;;
+		*.bak)	continue;;
+		*.orig)	continue;;
+		*.sav)	continue;;
+		*)		test -f "$CMD" || continue;;
+	esac
+
+	# remove cruft from prior test
+	if test $PRESERVE = yes ; then
+		/bin/rm -rf $TESTDIR/db.*
+	else
+		/bin/rm -rf $TESTDIR
+	fi
+	if test $BACKEND = ndb ; then
+		mysql --user root <<EOF
+		drop database if exists db_1;
+		drop database if exists db_2;
+		drop database if exists db_3;
+		drop database if exists db_4;
+		drop database if exists db_5;
+		drop database if exists db_6;
+EOF
+	fi
+
+	BCMD=`basename $CMD`
+	if [ -x "$CMD" ]; then
+		echo ">>>>> Starting ${TB}$BCMD${TN} for $BACKEND..."
+		$CMD
+		RC=$?
+		if test $RC -eq 0 ; then
+			echo ">>>>> $BCMD completed ${TB}OK${TN} for $BACKEND."
+		else
+			echo ">>>>> $BCMD ${TB}failed${TN} for $BACKEND"
+			FAILCOUNT=`expr $FAILCOUNT + 1`
+
+			if [ -n "$NOEXIT" ]; then
+				echo "Continuing."
+			else
+				echo "(exit $RC)"
+				exit $RC
+			fi
+		fi
+	else
+		echo ">>>>> Skipping ${TB}$BCMD${TN} for $BACKEND."
+		SKIPCOUNT=`expr $SKIPCOUNT + 1`
+		RC="-"
+	fi
+
+	if [ -n "$NOEXIT" ]; then
+		echo "$RC	$BCMD" >> $TESTWD/results
+	fi
+
+#	echo ">>>>> waiting $SLEEPTIME seconds for things to exit"
+#	sleep $SLEEPTIME
+	echo ""
+done
+
+if [ -n "$NOEXIT" ]; then
+	if [ "$FAILCOUNT" -gt 0 ]; then
+		cat $TESTWD/results
+		echo "$FAILCOUNT tests for $BACKEND ${TB}failed${TN}. Please review the test log."
+	else
+		echo "All executed tests for $BACKEND ${TB}succeeded${TN}."
+	fi
+fi
+
+echo "$SKIPCOUNT tests for $BACKEND were ${TB}skipped${TN}."
diff --git a/contrib/slapd-modules/variant/tests/scripts/common.sh b/contrib/slapd-modules/variant/tests/scripts/common.sh
new file mode 100755
index 0000000..3b155ad
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/common.sh
@@ -0,0 +1,115 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016-2017 by Ondřej Kuzník for Symas Corp.
+
+OVERLAY_CONFIG=${OVERLAY_CONFIG-data/config.ldif}
+
+mkdir -p $TESTDIR $DBDIR1
+
+echo "Running slapadd to build slapd database..."
+. $CONFFILTER $BACKEND $MONITORDB < $CONF > $ADDCONF
+$SLAPADD -f $ADDCONF -l $LDIFORDERED
+RC=$?
+if test $RC != 0 ; then
+	echo "slapadd failed ($RC)!"
+	exit $RC
+fi
+
+mkdir $TESTDIR/confdir
+. $CONFFILTER $BACKEND $MONITORDB < $CONF > $CONF1
+
+$SLAPPASSWD -g -n >$CONFIGPWF
+echo "database config" >>$CONF1
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF1
+
+echo "Starting slapd on TCP/IP port $PORT1 for configuration..."
+$SLAPD -f $CONF1 -F $TESTDIR/confdir -h $URI1 -d $LVL > $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "Making a modification that will be hidden by the test config..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/hidden.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPSEARCH -D cn=config -H $URI1 -y $CONFIGPWF \
+	-s base -b 'cn=module{0},cn=config' 1.1 >$TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module{0},cn=config
+changetype: modify
+add: olcModuleLoad
+olcModuleLoad: `pwd`/../variant.la
+EOMOD
+	;;
+32)
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: `pwd`/../variant.la
+EOMOD
+	;;
+*)
+	echo "Failed testing for module load entry"
+	exit $RC;
+	;;
+esac
+
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Loading test variant configuration..."
+. $CONFFILTER $BACKEND $MONITORDB < $OVERLAY_CONFIG | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
diff --git a/contrib/slapd-modules/variant/tests/scripts/test001-config b/contrib/slapd-modules/variant/tests/scripts/test001-config
new file mode 100755
index 0000000..7a5559f
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test001-config
@@ -0,0 +1,209 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Applying invalid changes to config (should fail)..."
+for CHANGE in data/test001-*.ldif; do
+	echo "... $CHANGE"
+	. $CONFFILTER $BACKEND $MONITORDB < $CHANGE | \
+	$LDAPMODIFY -D cn=config -H $URI1 -y $CONFIGPWF \
+		>> $TESTOUT 2>&1
+	RC=$?
+	case $RC in
+	0)
+		echo "ldapmodify should have failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit 1
+		;;
+	80)
+		echo "ldapmodify failed ($RC)"
+		;;
+	*)
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+		;;
+	esac
+done
+
+# We run this search after the changes above and before restart so we can also
+# check the reconfiguration attempts actually had no side effects
+echo "Saving search output before server restart..."
+echo "# search output from dynamically configured server..." >> $SERVER3OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	>> $SERVER3OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Stopping slapd on TCP/IP port $PORT1..."
+kill -HUP $KILLPIDS
+KILLPIDS=""
+sleep $SLEEP0
+echo "Starting slapd on TCP/IP port $PORT1..."
+$SLAPD -F $TESTDIR/confdir -h $URI1 -d $LVL >> $LOG1 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI1 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "Testing slapd.conf support..."
+mkdir $TESTDIR/conftest $DBDIR2
+. $CONFFILTER $BACKEND $MONITORDB < $CONFTWO \
+	| sed -e '/^argsfile.*/a\
+moduleload ../variant.la' \
+		  -e '/database.*monitor/i\
+include data/variant.conf' \
+	> $CONF2
+echo "database config" >>$CONF2
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF2
+
+$SLAPADD -f $CONF2 -l $LDIFORDERED
+$SLAPD -Tt -f $CONF2 -F $TESTDIR/conftest -d $LVL >> $LOG2 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "slaptest failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Starting slapd on TCP/IP port $PORT2..."
+$SLAPD -F $TESTDIR/conftest -h $URI2 -d $LVL >> $LOG2 2>&1 &
+PID=$!
+if test $WAIT != 0 ; then
+	echo PID $PID
+	read foo
+fi
+KILLPIDS="$KILLPIDS $PID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$MONITOR" -H $URI2 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for slapd to start..."
+	sleep ${SLEEP1}
+done
+
+echo "Gathering overlay configuration from both servers..."
+echo "# overlay configuration from dynamically configured server..." >> $SERVER1OUT
+$LDAPSEARCH -D cn=config -H $URI1 -y $CONFIGPWF \
+	-b "olcOverlay={0}variant,olcDatabase={1}$BACKEND,cn=config" \
+	>> $SERVER1OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "# overlay configuration from server configured from slapd.conf..." >> $SERVER2OUT
+$LDAPSEARCH -D cn=config -H $URI2 -y $CONFIGPWF \
+	-b "olcOverlay={0}variant,olcDatabase={1}$BACKEND,cn=config" \
+	>> $SERVER2OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+# We've already filtered out the ordering markers, now sort the entries
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s a < $SERVER2OUT > $SERVER2FLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s a < $SERVER1OUT > $SERVER1FLT
+echo "Comparing filter output..."
+$CMP $SERVER2FLT $SERVER1FLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+rm $SERVER1OUT $SERVER2OUT
+
+echo "Comparing search output on both servers..."
+echo "# search output from dynamically configured server..." >> $SERVER1OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	>> $SERVER1OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "# search output from server configured from slapd.conf..." >> $SERVER2OUT
+$LDAPSEARCH -b "$BASEDN" -H $URI2 \
+	>> $SERVER2OUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SERVER1OUT > $SERVER1FLT
+$LDIFFILTER -s e < $SERVER2OUT > $SERVER2FLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $SERVER3OUT > $SERVER3FLT
+echo "Comparing filter output..."
+$CMP $SERVER3FLT $SERVER1FLT > $CMPOUT && \
+$CMP $SERVER3FLT $SERVER2FLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test002-add-delete b/contrib/slapd-modules/variant/tests/scripts/test002-add-delete
new file mode 100755
index 0000000..bd316b2
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test002-add-delete
@@ -0,0 +1,113 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Adding entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test002-01-entry.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Configuring entry as variant..."
+. $CONFFILTER $BACKEND $MONITORDB < data/additional-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Removing entry..."
+$LDAPDELETE -D $MANAGERDN -H $URI1 -w $PASSWD \
+	"cn=Gern Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapdelete failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Adding entry again (should fail)..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test002-01-entry.ldif >> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+19)
+	echo "ldapmodify failed ($RC)"
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Adding a regex entry (should fail)..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test002-02-regex.ldif >> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+19)
+	echo "ldapmodify failed ($RC)"
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Adding entry with offending attributes removed..."
+grep -v '^description:' data/test002-01-entry.ldif | \
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test003-search b/contrib/slapd-modules/variant/tests/scripts/test003-search
new file mode 100755
index 0000000..2284ab7
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test003-search
@@ -0,0 +1,113 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Testing searches against regular entries..."
+echo "# Testing searches against regular entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	"(|(name=Elliot)(description=*hiker*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches listing variants..."
+echo >> $SEARCHOUT
+echo "# Testing searches listing variants..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s one -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s base -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >> $SEARCHOUT
+$LDAPSEARCH -s base -H $URI1 \
+	-b "cn=Bjorn Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	'(ou=Information Technology Division)' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >> $SEARCHOUT
+$LDAPSEARCH -b "cn=ITD Staff,ou=Groups,$BASEDN" -s base -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on variants..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on variants..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	"(st=Alumni Association)" st \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test003-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test004-compare b/contrib/slapd-modules/variant/tests/scripts/test004-compare
new file mode 100755
index 0000000..c87d347
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test004-compare
@@ -0,0 +1,63 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Comparing a regular entry..."
+$LDAPCOMPARE -H $URI1 \
+	"cn=Mark Elliot,ou=Alumni Association,ou=People,$BASEDN" \
+	"cn:Mark Elliot" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+echo "Comparing a variant entry..."
+$LDAPCOMPARE -H $URI1 \
+	"ou=People,$BASEDN" \
+	"description:The Example, Inc. at Anytown" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+echo "Comparing a regex entry..."
+$LDAPCOMPARE -H $URI1 \
+	"cn=Barbara Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	"ou:Information Technology Division" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test005-modify b/contrib/slapd-modules/variant/tests/scripts/test005-modify
new file mode 100755
index 0000000..4cbf289
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test005-modify
@@ -0,0 +1,120 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Modifying entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test005-changes.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+# for now, overlay returns success just after the modifications to the main
+# entry succeed, ignoring the rest should they fail
+echo "Modifying a nonexistent variant of an existing entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test005-variant-missing.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Configuring nonexistent entry as variant..."
+. $CONFFILTER $BACKEND $MONITORDB < data/additional-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Modifying an existing variant of above missing entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test005-modify-missing.ldif >> $TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+32)
+	echo "ldapmodify failed ($RC)"
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Reading affected entries back..."
+echo "# Reading affected entries back..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	'(|(description=*heard*)(st=*)(ou=alabama)(ou=*IT*))' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >>$SEARCHOUT
+$LDAPSEARCH -H $URI1 -s base \
+	-b "cn=Bjorn Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test005-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test006-acl b/contrib/slapd-modules/variant/tests/scripts/test006-acl
new file mode 100755
index 0000000..6b34fb8
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test006-acl
@@ -0,0 +1,323 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+case "$BACKEND" in ldif | null)
+	echo "$BACKEND backend does not support access controls, test skipped"
+	exit 0
+esac
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+CONF=$ACLCONF
+. ${SCRIPTDIR}/common.sh
+
+echo "Applying test-specific configuration..."
+. $CONFFILTER $BACKEND $MONITORDB < data/test006-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$MANAGERDN" -H $URI1 -w $PASSWD >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: ou=Add & Delete,dc=example,dc=com
+changetype: add
+objectClass: organizationalUnit
+ou: Add & Delete
+
+dn: cn=group,ou=Add & Delete,dc=example,dc=com
+changetype: add
+objectclass: groupOfNames
+member: dc=example,dc=com
+
+dn: sn=Doe,ou=Add & Delete,dc=example,dc=com
+changetype: add
+objectclass: OpenLDAPperson
+cn: John
+uid: jd
+
+dn: sn=Elliot,ou=Add & Delete,dc=example,dc=com
+changetype: add
+objectclass: OpenLDAPperson
+cn: Mark
+uid: me
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing search ACL processing..."
+
+echo "# Try to read an entry inside the Alumni Association container.
+# It should give us noSuchObject if we're not bound..." \
+>> $SEARCHOUT
+# FIXME: temporarily remove the "No such object" message to make
+# the test succeed even if SLAP_ACL_HONOR_DISCLOSE is not #define'd
+$LDAPSEARCH -b "$MELLIOTDN" -H $URI1 "(objectclass=*)" \
+	2>&1 | grep -v "No such object" >> $SEARCHOUT
+
+echo >>$SEARCHOUT
+echo "# ... and should return appropriate attributes if we're bound as anyone
+# under Example." \
+>> $SEARCHOUT
+$LDAPSEARCH -b "$MELLIOTDN" -H $URI1 \
+	-D "$BABSDN" -w bjensen "(objectclass=*)" >> $SEARCHOUT 2>&1
+
+$LDAPSEARCH -b "$MELLIOTDN" -H $URI1 \
+	-D "$BJORNSDN" -w bjorn "(objectclass=*)" >> $SEARCHOUT 2>&1
+
+echo >>$SEARCHOUT
+echo "# Add & Delete subtree contents as seen by Babs" >> $SEARCHOUT
+$LDAPSEARCH -b "ou=Add & Delete,dc=example,dc=com" -H $URI1 \
+	-D "$BABSDN" -w bjensen "(objectclass=*)" >> $SEARCHOUT 2>&1
+
+echo >>$SEARCHOUT
+echo "# Add & Delete subtree contents as seen by Bjorn" >> $SEARCHOUT
+$LDAPSEARCH -b "ou=Add & Delete,dc=example,dc=com" -H $URI1 \
+	-D "$BJORNSDN" -w bjorn "(objectclass=*)" >> $SEARCHOUT 2>&1
+
+echo "Testing modifications..."
+echo "... ACL on the alternative entry"
+$LDAPMODIFY -D "$BJORNSDN" -H $URI1 -w bjorn >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=group,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+add: seealso
+seealso: $BJORNSDN
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$BABSDN" -H $URI1 -w bjensen >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Alumni Assoc Staff, ou=Groups, dc=example, dc=com
+changetype: modify
+add: description
+description: added by bjensen (should fail)
+EOMODS
+RC=$?
+case $RC in
+50)
+	;;
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit -1
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+$LDAPMODIFY -D "$MANAGERDN" -H $URI1 -w $PASSWD >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=group,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+add: seealso
+seealso: $BABSDN
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$BJORNSDN" -H $URI1 -w bjorn >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Alumni Assoc Staff, ou=Groups, dc=example, dc=com
+changetype: modify
+add: description
+description: added by bjorn (removed later)
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$BABSDN" -H $URI1 -w bjensen >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Group,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+delete: description
+description: added by bjorn (removed later)
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$BJORNSDN" -H $URI1 -w bjorn >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Added by Bjorn,ou=Add & Delete,dc=example,dc=com
+changetype: add
+objectClass: inetOrgPerson
+sn: Jensen
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$BJORNSDN" -H $URI1 -w bjorn >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Group,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+add: description
+description: another one added by bjorn (should succeed)
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "... ACL on the variant entry"
+$LDAPMODIFY -D "$BABSDN" -H $URI1 -w bjensen >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Group,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+add: description
+description: added by bjensen (should fail)
+EOMODS
+RC=$?
+case $RC in
+50)
+	;;
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit -1
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+$LDAPMODIFY -D "$BJORNSDN" -H $URI1 -w bjorn >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: sn=Doe,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+add: description
+description: added by bjorn (will be removed)
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+$LDAPMODIFY -D "$BABSDN" -H $URI1 -w bjensen >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: cn=Added by Bjorn,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+replace: description
+description: added by bjensen (should fail)
+EOMODS
+RC=$?
+case $RC in
+50)
+	;;
+0)
+	echo "ldapmodify should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit -1
+	;;
+*)
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+$LDAPMODIFY -D "$JAJDN" -H $URI1 -w jaj >> \
+	$TESTOUT 2>&1 << EOMODS
+dn: sn=Elliot,ou=Add & Delete,dc=example,dc=com
+changetype: modify
+delete: description
+description: added by bjorn (will be removed)
+-
+add: description
+description: added by jaj (should succeed)
+EOMODS
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+sleep $SLEEP0
+
+echo >>$SEARCHOUT
+echo "Using ldapsearch to retrieve all the entries..."
+echo "# Using ldapsearch to retrieve all the entries..." >> $SEARCHOUT
+$LDAPSEARCH -S "" -b "ou=Add & Delete,dc=example,dc=com" \
+	-D "$MANAGERDN" -H $URI1 -w $PASSWD \
+	'objectClass=*' >> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test006-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "comparison failed - operations did not complete correctly"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test007-subtypes b/contrib/slapd-modules/variant/tests/scripts/test007-subtypes
new file mode 100755
index 0000000..177fc33
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test007-subtypes
@@ -0,0 +1,67 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Comparing supertype of a variant attribute..."
+$LDAPCOMPARE -H $URI1 \
+	"ou=Groups,$BASEDN" \
+	"name:Alumni Association" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 6 && test $RC,$BACKEND != 5,null ; then
+	echo "ldapcompare failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+echo "Testing searches against attribute supertypes..."
+echo "# Testing searches against attribute supertypes..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	"(&(name=groups)(name=Alumni Association))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test007-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test008-variant-replication b/contrib/slapd-modules/variant/tests/scripts/test008-variant-replication
new file mode 100755
index 0000000..63e2d7e
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test008-variant-replication
@@ -0,0 +1,194 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+if test "$SYNCPROV" = syncprovno; then 
+	echo "Syncrepl provider overlay not available, test skipped"
+	exit 0
+fi 
+
+. ${SCRIPTDIR}/common.sh
+
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: olcOverlay={0}variant,olcDatabase={1}$BACKEND,cn=config
+changetype: modify
+replace: olcVariantPassReplication
+olcVariantPassReplication: FALSE
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+if test "$SYNCPROV" = syncprovmod; then
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module{0},cn=config
+changetype: modify
+add: olcModuleLoad
+olcModuleLoad: $LDAP_BUILD/servers/slapd/overlays/syncprov.la
+EOMOD
+
+	RC=$?
+	if test $RC != 0 ; then
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+	fi
+fi
+
+echo "Configuring syncprov on the provider..."
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: olcOverlay=syncprov,olcDatabase={1}$BACKEND,cn=config
+changetype: add
+objectclass: olcSyncProvConfig
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+mkdir $DBDIR4
+
+echo "Starting consumer slapd on TCP/IP port $PORT4..."
+. $CONFFILTER $BACKEND $MONITORDB < $P1SRCONSUMERCONF > $CONF4
+$SLAPD -f $CONF4 -h $URI4 -d $LVL > $LOG4 2>&1 &
+CONSUMERPID=$!
+if test $WAIT != 0 ; then
+	echo CONSUMERPID $CONSUMERPID
+	read foo
+fi
+KILLPIDS="$KILLPIDS $CONSUMERPID"
+
+sleep $SLEEP0
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$BASEDN" -H $URI4 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for consumer to start replication..."
+	sleep ${SLEEP1}
+done
+
+echo "Waiting ${SLEEP1} seconds for consumer to finish replicating..."
+sleep ${SLEEP1}
+
+echo "Testing searches against regular entries..."
+echo "# Testing searches against regular entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(|(name=Elliot)(description=*hiker*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches listing replicated variants..."
+echo >> $SEARCHOUT
+echo "# Testing searches listing replicated variants..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s one -H $URI4 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+# regex variants do not replicate correctly and this is documented
+echo >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s base -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+# regex variants do not replicate correctly and this is documented
+echo >> $SEARCHOUT
+$LDAPSEARCH -s base -H $URI1 \
+	-b "cn=Bjorn Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	'(ou=Information Technology Division)' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+# regex variants do not replicate correctly and this is documented
+echo >> $SEARCHOUT
+$LDAPSEARCH -b "cn=ITD Staff,ou=Groups,$BASEDN" -s base -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on replicated variants..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on replicated variants..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(st=Alumni Association)" st \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test003-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test009-ignored-replication b/contrib/slapd-modules/variant/tests/scripts/test009-ignored-replication
new file mode 100755
index 0000000..aefbfa9
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test009-ignored-replication
@@ -0,0 +1,227 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+if test "$SYNCPROV" = syncprovno; then 
+	echo "Syncrepl provider overlay not available, test skipped"
+	exit 0
+fi 
+
+. ${SCRIPTDIR}/common.sh
+
+if test "$SYNCPROV" = syncprovmod; then
+	$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module{0},cn=config
+changetype: modify
+add: olcModuleLoad
+olcModuleLoad: $LDAP_BUILD/servers/slapd/overlays/syncprov.la
+EOMOD
+
+	RC=$?
+	if test $RC != 0 ; then
+		echo "ldapmodify failed ($RC)!"
+		test $KILLSERVERS != no && kill -HUP $KILLPIDS
+		exit $RC
+	fi
+fi
+
+echo "Configuring syncprov on the provider..."
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	> $TESTOUT 2>&1 <<EOMOD
+dn: olcOverlay={0}syncprov,olcDatabase={1}$BACKEND,cn=config
+changetype: add
+objectclass: olcSyncProvConfig
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+mkdir $DBDIR4 $TESTDIR/confdir-consumer
+
+echo "Starting consumer slapd on TCP/IP port $PORT4..."
+. $CONFFILTER $BACKEND $MONITORDB < $P1SRCONSUMERCONF > $CONF4
+
+echo "database config" >>$CONF4
+echo "rootpw `$SLAPPASSWD -T $CONFIGPWF`" >>$CONF4
+
+$SLAPD -f $CONF4 -F $TESTDIR/confdir-consumer -h $URI4 -d $LVL > $LOG4 2>&1 &
+CONSUMERPID=$!
+if test $WAIT != 0 ; then
+	echo CONSUMERPID $CONSUMERPID
+	read foo
+fi
+KILLPIDS="$KILLPIDS $CONSUMERPID"
+
+sleep $SLEEP0
+
+echo "Setting up variant overlay on consumer..."
+$LDAPSEARCH -D cn=config -H $URI4 -y $CONFIGPWF \
+	-s base -b 'cn=module{0},cn=config' 1.1 >$TESTOUT 2>&1
+RC=$?
+case $RC in
+0)
+	$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module{0},cn=config
+changetype: modify
+add: olcModuleLoad
+olcModuleLoad: `pwd`/../variant.la
+EOMOD
+	;;
+32)
+	$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=module,cn=config
+changetype: add
+objectClass: olcModuleList
+olcModuleLoad: `pwd`/../variant.la
+EOMOD
+	;;
+*)
+	echo "Failed testing for module load entry"
+	exit $RC;
+	;;
+esac
+
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+. $CONFFILTER $BACKEND $MONITORDB < $OVERLAY_CONFIG | \
+$LDAPMODIFY -v -D cn=config -H $URI4 -y $CONFIGPWF \
+	> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+for i in 0 1 2 3 4 5; do
+	$LDAPSEARCH -s base -b "$BASEDN" -H $URI4 \
+		'objectclass=*' > /dev/null 2>&1
+	RC=$?
+	if test $RC = 0 ; then
+		break
+	fi
+	echo "Waiting ${SLEEP1} seconds for consumer to start replication..."
+	sleep ${SLEEP1}
+done
+
+echo "Waiting ${SLEEP1} seconds for consumer to finish replicating..."
+sleep ${SLEEP1}
+
+echo "Testing searches against regular entries..."
+echo "# Testing searches against regular entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(|(name=Elliot)(description=*hiker*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches listing replicated variants..."
+echo >> $SEARCHOUT
+echo "# Testing searches listing replicated variants..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s one -H $URI4 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s base -H $URI4 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >> $SEARCHOUT
+$LDAPSEARCH -s base -H $URI4 \
+	-b "cn=Bjorn Jensen,ou=Information Technology Division,ou=People,$BASEDN" \
+	'(ou=Information Technology Division)' \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo >> $SEARCHOUT
+$LDAPSEARCH -b "cn=ITD Staff,ou=Groups,$BASEDN" -s base -H $URI4 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on replicated variants..."
+echo >> $SEARCHOUT
+echo "# Testing searches filtering on replicated variants..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI4 \
+	"(st=Alumni Association)" st \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test003-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test010-limits b/contrib/slapd-modules/variant/tests/scripts/test010-limits
new file mode 100755
index 0000000..5828922
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test010-limits
@@ -0,0 +1,99 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Testing searches against regular entries..."
+echo "# Testing searches against regular entries..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	-z 1 "(|(name=Elliot)(description=*hiker*))" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapsearch should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+4)
+	echo "sizelimit reached ($RC)"
+	;;
+*)
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+echo "Testing searches listing variants where limits just fit..."
+echo "# Testing searches listing variants where limits just fit..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -s one -H $URI1 \
+	-z 3 >> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Testing searches filtering on variants going over the specified limit..."
+echo "# Testing searches filtering on variants going over the specified limit..." >> $SEARCHOUT
+$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+	-z 1 "(name=Alumni Association)" \
+	>> $SEARCHOUT 2>&1
+RC=$?
+case $RC in
+0)
+	echo "ldapsearch should have failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+	;;
+4)
+	echo "sizelimit reached ($RC)"
+	;;
+*)
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+	;;
+esac
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test010-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER -s e < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER -s e < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test011-referral b/contrib/slapd-modules/variant/tests/scripts/test011-referral
new file mode 100755
index 0000000..37d6d8c
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test011-referral
@@ -0,0 +1,169 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+TESTDN="cn=Gern Jensen,ou=Information Technology Division,ou=People,$BASEDN"
+
+echo "Adding referral..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: $TESTDN
+changetype: add
+objectclass: referral
+objectclass: extensibleObject
+ref: ldap://hostB HostB
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Configuring referral as variant..."
+. $CONFFILTER $BACKEND $MONITORDB < data/additional-config.ldif | \
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Retrieving a referral variant..."
+echo "# Retrieving a referral variant..." >> $SEARCHOUT
+$LDAPSEARCH -LLL -b "$BASEDN" -H $URI1 \
+	'(cn=Gern Jensen)' >> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch: unexpected result ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Retrieving a referral variant (returns a referral)..."
+echo "# Retrieving a referral variant (returns a referral)..." >> $SEARCHOUT
+$LDAPSEARCH -b "$TESTDN" -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 10 ; then
+	echo "ldapsearch: unexpected result ($RC)! (referral expected)"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Modifying a referral variant (returns a referral)..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: $TESTDN
+changetype: modify
+delete: description
+EOMOD
+RC=$?
+if test $RC != 10 ; then
+	echo "ldapmodify: unexpected result ($RC)! (referral expected)"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Comparing a referral variant (returns a referral)..."
+$LDAPCOMPARE -H $URI1 "$TESTDN" \
+	"description:The Example, Inc. at Anytown" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 10; then
+	echo "ldapcompare: unexpected result ($RC)! (referral expected)"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+echo "Reconfiguring variant underneath a referral..."
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: name={4}test002,olcOverlay={0}variant,olcDatabase={1}$BACKEND,cn=config
+changetype: modify
+replace: olcVariantEntry
+olcVariantEntry: cn=child,$TESTDN
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Retrieving a variant under a referral (returns a referral)..."
+echo "# Retrieving a variant under a referral (returns a referral)..." >> $SEARCHOUT
+$LDAPSEARCH -b "cn=child,$TESTDN" -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 10 ; then
+	echo "ldapsearch: unexpected result ($RC)! (referral expected)"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Modifying a variant under a referral (returns a referral)..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	>> $TESTOUT 2>&1 <<EOMOD
+dn: cn=child,$TESTDN
+changetype: modify
+delete: description
+EOMOD
+RC=$?
+if test $RC != 10 ; then
+	echo "ldapmodify: unexpected result ($RC)! (referral expected)"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Comparing a variant under a referral (returns a referral)..."
+$LDAPCOMPARE -H $URI1 "cn=child,$TESTDN" \
+	"description:The Example, Inc. at Anytown" >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 10; then
+	echo "ldapcompare: unexpected result ($RC)! (referral expected)"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit 1
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test011-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/tests/scripts/test012-crossdb b/contrib/slapd-modules/variant/tests/scripts/test012-crossdb
new file mode 100755
index 0000000..8854a1b
--- /dev/null
+++ b/contrib/slapd-modules/variant/tests/scripts/test012-crossdb
@@ -0,0 +1,90 @@
+#! /bin/sh
+## $OpenLDAP$
+## This work is part of OpenLDAP Software <http://www.openldap.org/>.
+##
+## Copyright 2016-2022 The OpenLDAP Foundation.
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted only as authorized by the OpenLDAP
+## Public License.
+##
+## A copy of this license is available in the file LICENSE in the
+## top-level directory of the distribution or, alternatively, at
+## <http://www.OpenLDAP.org/license.html>.
+##
+## ACKNOWLEDGEMENTS:
+## This module was written in 2016 by Ondřej Kuzník for Symas Corp.
+
+echo "running defines.sh"
+. $SRCDIR/scripts/defines.sh
+
+. ${SCRIPTDIR}/common.sh
+
+echo "Setting up another database and variant using an alternate there..."
+mkdir $DBDIR2
+$LDAPMODIFY -v -D cn=config -H $URI1 -y $CONFIGPWF \
+	<<EOMOD >> $TESTOUT 2>&1
+dn: olcDatabase=ldif,cn=config
+changetype: add
+objectclass: olcLdifConfig
+olcSuffix: dc=demonstration,dc=com
+olcDbDirectory: $DBDIR2
+olcRootDn: $MANAGERDN
+
+dn: olcVariantVariantAttribute={1}seealso,name={0}variant,olcOverlay={0}variant,olcDatabase={1}$BACKEND,cn=config
+changetype: modify
+replace: olcVariantAlternativeEntry
+olcVariantAlternativeEntry: ou=Societies,dc=demonstration,dc=com
+EOMOD
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Adding alternate entry..."
+$LDAPMODIFY -D $MANAGERDN -H $URI1 -w $PASSWD \
+	-f data/test012-data.ldif >> $TESTOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapmodify failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+echo "Checking the variant gets resolved correctly..."
+echo "# Testing a search against a variant using another DB..." >> $SEARCHOUT
+#$LDAPSEARCH -b "$BASEDN" -H $URI1 \
+#    "seealso=dc=example,dc=com" \
+$LDAPSEARCH -b "ou=People,$BASEDN" -s base -H $URI1 \
+	>> $SEARCHOUT 2>&1
+RC=$?
+if test $RC != 0 ; then
+	echo "ldapsearch failed ($RC)!"
+	test $KILLSERVERS != no && kill -HUP $KILLPIDS
+	exit $RC
+fi
+
+test $KILLSERVERS != no && kill -HUP $KILLPIDS
+
+LDIF=data/test012-out.ldif
+
+echo "Filtering ldapsearch results..."
+$LDIFFILTER < $SEARCHOUT > $SEARCHFLT
+echo "Filtering expected entries..."
+$LDIFFILTER < $LDIF > $LDIFFLT
+echo "Comparing filter output..."
+$CMP $SEARCHFLT $LDIFFLT > $CMPOUT
+
+if test $? != 0 ; then
+	echo "Comparison failed"
+	exit 1
+fi
+
+echo ">>>>> Test succeeded"
+
+test $KILLSERVERS != no && wait
+
+exit 0
diff --git a/contrib/slapd-modules/variant/variant.c b/contrib/slapd-modules/variant/variant.c
new file mode 100644
index 0000000..edf4832
--- /dev/null
+++ b/contrib/slapd-modules/variant/variant.c
@@ -0,0 +1,1424 @@
+/* variant.c - variant overlay */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2016-2021 Symas Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was developed in 2016-2017 by Ondřej Kuzník for Symas Corp.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_VARIANT
+
+#include "slap.h"
+#include "slap-config.h"
+#include "ldap_queue.h"
+
+typedef enum variant_type_t {
+	VARIANT_INFO_PLAIN = 1 << 0,
+	VARIANT_INFO_REGEX = 1 << 1,
+
+	VARIANT_INFO_ALL = ~0
+} variant_type_t;
+
+typedef struct variant_info_t {
+	int passReplication;
+	LDAP_STAILQ_HEAD(variant_list, variantEntry_info) variants, regex_variants;
+} variant_info_t;
+
+typedef struct variantEntry_info {
+	variant_info_t *ov;
+	struct berval dn;
+	variant_type_t type;
+	regex_t *regex;
+	LDAP_SLIST_HEAD(attribute_list, variantAttr_info) attributes;
+	LDAP_STAILQ_ENTRY(variantEntry_info) next;
+} variantEntry_info;
+
+typedef struct variantAttr_info {
+	variantEntry_info *variant;
+	struct berval dn;
+	AttributeDescription *attr, *alternative;
+	LDAP_SLIST_ENTRY(variantAttr_info) next;
+} variantAttr_info;
+
+static int
+variant_build_dn(
+		Operation *op,
+		variantAttr_info *vai,
+		int nmatch,
+		regmatch_t *pmatch,
+		struct berval *out )
+{
+	struct berval dn, *ndn = &op->o_req_ndn;
+	char *dest, *p, *prev, *end = vai->dn.bv_val + vai->dn.bv_len;
+	size_t len = vai->dn.bv_len;
+	int rc;
+
+	p = vai->dn.bv_val;
+	while ( (p = memchr( p, '$', end - p )) != NULL ) {
+		len -= 1;
+		p += 1;
+
+		if ( ( *p >= '0' ) && ( *p <= '9' ) ) {
+			int i = *p - '0';
+
+			len += ( pmatch[i].rm_eo - pmatch[i].rm_so );
+		} else if ( *p != '$' ) {
+			/* Should have been checked at configuration time */
+			assert(0);
+		}
+		len -= 1;
+		p += 1;
+	}
+
+	dest = dn.bv_val = ch_realloc( out->bv_val, len + 1 );
+	dn.bv_len = len;
+
+	prev = vai->dn.bv_val;
+	while ( (p = memchr( prev, '$', end - prev )) != NULL ) {
+		len = p - prev;
+		AC_MEMCPY( dest, prev, len );
+		dest += len;
+		p += 1;
+
+		if ( ( *p >= '0' ) && ( *p <= '9' ) ) {
+			int i = *p - '0';
+			len = pmatch[i].rm_eo - pmatch[i].rm_so;
+
+			AC_MEMCPY( dest, ndn->bv_val + pmatch[i].rm_so, len );
+			dest += len;
+		} else if ( *p == '$' ) {
+			*dest++ = *p;
+		}
+		prev = p + 1;
+	}
+	len = end - prev;
+	AC_MEMCPY( dest, prev, len );
+	dest += len;
+	*dest = '\0';
+
+	rc = dnNormalize( 0, NULL, NULL, &dn, out, NULL );
+	ch_free( dn.bv_val );
+
+	return rc;
+}
+
+static int
+variant_build_entry(
+		Operation *op,
+		variantEntry_info *vei,
+		struct berval *dn,
+		Entry **ep,
+		int nmatch,
+		regmatch_t *pmatch )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	BackendDB *be_orig = op->o_bd, *db;
+	struct berval ndn = BER_BVNULL;
+	variantAttr_info *vai;
+	Attribute *a;
+	BerVarray nvals;
+	Entry *e;
+	unsigned int i;
+	int rc;
+
+	assert( ep );
+	assert( !*ep );
+
+	rc = overlay_entry_get_ov( op, dn, NULL, NULL, 0, &e, on );
+	if ( rc == LDAP_SUCCESS && is_entry_referral( e ) ) {
+		overlay_entry_release_ov( op, e, 0, on );
+		rc = LDAP_REFERRAL;
+	}
+
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	*ep = entry_dup( e );
+	overlay_entry_release_ov( op, e, 0, on );
+
+	LDAP_SLIST_FOREACH( vai, &vei->attributes, next ) {
+		if ( vei->type == VARIANT_INFO_REGEX ) {
+			rc = variant_build_dn( op, vai, nmatch, pmatch, &ndn );
+			if ( rc != LDAP_SUCCESS ) {
+				goto done;
+			}
+		} else {
+			ndn = vai->dn;
+		}
+
+		(void)attr_delete( &(*ep)->e_attrs, vai->attr );
+		op->o_bd = be_orig;
+
+		/* only select backend if not served by ours, would retrace all
+		 * overlays again */
+		db = select_backend( &ndn, 0 );
+		if ( db && db != be_orig->bd_self ) {
+			op->o_bd = db;
+			rc = be_entry_get_rw( op, &ndn, NULL, vai->alternative, 0, &e );
+		} else {
+			rc = overlay_entry_get_ov(
+					op, &ndn, NULL, vai->alternative, 0, &e, on );
+		}
+
+		switch ( rc ) {
+			case LDAP_SUCCESS:
+				break;
+			case LDAP_INSUFFICIENT_ACCESS:
+			case LDAP_NO_SUCH_ATTRIBUTE:
+			case LDAP_NO_SUCH_OBJECT:
+				rc = LDAP_SUCCESS;
+				continue;
+				break;
+			default:
+				goto done;
+				break;
+		}
+
+		a = attr_find( e->e_attrs, vai->alternative );
+
+		/* back-ldif doesn't check the attribute exists in the entry before
+		 * returning it */
+		if ( a ) {
+			if ( a->a_nvals ) {
+				nvals = a->a_nvals;
+			} else {
+				nvals = a->a_vals;
+			}
+
+			for ( i = 0; i < a->a_numvals; i++ ) {
+				if ( backend_access( op, e, &ndn, vai->alternative, &nvals[i],
+							ACL_READ, NULL ) != LDAP_SUCCESS ) {
+					continue;
+				}
+
+				rc = attr_merge_one( *ep, vai->attr, &a->a_vals[i], &nvals[i] );
+				if ( rc != LDAP_SUCCESS ) {
+					break;
+				}
+			}
+		}
+
+		if ( db && db != be_orig->bd_self ) {
+			be_entry_release_rw( op, e, 0 );
+		} else {
+			overlay_entry_release_ov( op, e, 0, on );
+		}
+		if ( rc != LDAP_SUCCESS ) {
+			goto done;
+		}
+	}
+
+done:
+	op->o_bd = be_orig;
+	if ( rc != LDAP_SUCCESS && *ep ) {
+		entry_free( *ep );
+		*ep = NULL;
+	}
+	if ( vei->type == VARIANT_INFO_REGEX ) {
+		ch_free( ndn.bv_val );
+	}
+
+	return rc;
+}
+
+static int
+variant_find_config(
+		Operation *op,
+		variant_info_t *ov,
+		struct berval *ndn,
+		int which,
+		variantEntry_info **veip,
+		size_t nmatch,
+		regmatch_t *pmatch )
+{
+	variantEntry_info *vei;
+
+	assert( veip );
+
+	if ( which & VARIANT_INFO_PLAIN ) {
+		int diff;
+
+		LDAP_STAILQ_FOREACH( vei, &ov->variants, next ) {
+			dnMatch( &diff, 0, NULL, NULL, ndn, &vei->dn );
+			if ( diff ) continue;
+
+			*veip = vei;
+			return LDAP_SUCCESS;
+		}
+	}
+
+	if ( which & VARIANT_INFO_REGEX ) {
+		LDAP_STAILQ_FOREACH( vei, &ov->regex_variants, next ) {
+			if ( regexec( vei->regex, ndn->bv_val, nmatch, pmatch, 0 ) ) {
+				continue;
+			}
+
+			*veip = vei;
+			return LDAP_SUCCESS;
+		}
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+variant_op_add( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei;
+	int rc;
+
+	/* Replication always uses the rootdn */
+	if ( ov->passReplication && SLAPD_SYNC_IS_SYNCCONN(op->o_connid) &&
+			be_isroot( op ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "variant_op_add: "
+			"dn=%s\n", op->o_req_ndn.bv_val );
+
+	rc = variant_find_config(
+			op, ov, &op->o_req_ndn, VARIANT_INFO_ALL, &vei, 0, NULL );
+	if ( rc == LDAP_SUCCESS ) {
+		variantAttr_info *vai;
+
+		LDAP_SLIST_FOREACH( vai, &vei->attributes, next ) {
+			Attribute *a;
+			for ( a = op->ora_e->e_attrs; a; a = a->a_next ) {
+				if ( a->a_desc == vai->attr ) {
+					rc = LDAP_CONSTRAINT_VIOLATION;
+					send_ldap_error( op, rs, rc,
+							"variant: trying to add variant attributes" );
+					goto done;
+				}
+			}
+		}
+	}
+	rc = SLAP_CB_CONTINUE;
+
+done:
+	Debug( LDAP_DEBUG_TRACE, "variant_op_add: "
+			"finished with %d\n",
+			rc );
+	return rc;
+}
+
+static int
+variant_op_compare( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei;
+	regmatch_t pmatch[10];
+	int rc, nmatch = sizeof(pmatch) / sizeof(regmatch_t);
+
+	Debug( LDAP_DEBUG_TRACE, "variant_op_compare: "
+			"dn=%s\n", op->o_req_ndn.bv_val );
+
+	rc = variant_find_config(
+			op, ov, &op->o_req_ndn, VARIANT_INFO_ALL, &vei, nmatch, pmatch );
+	if ( rc == LDAP_SUCCESS ) {
+		Entry *e = NULL;
+
+		rc = variant_build_entry( op, vei, &op->o_req_ndn, &e, nmatch, pmatch );
+		/* in case of error, just let the backend deal with the mod and the
+		 * client should get a meaningful error back */
+		if ( rc != LDAP_SUCCESS ) {
+			rc = SLAP_CB_CONTINUE;
+		} else {
+			rc = slap_compare_entry( op, e, op->orc_ava );
+
+			entry_free( e );
+			e = NULL;
+		}
+	}
+
+	if ( rc != SLAP_CB_CONTINUE ) {
+		rs->sr_err = rc;
+		send_ldap_result( op, rs );
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "variant_op_compare: "
+			"finished with %d\n", rc );
+	return rc;
+}
+
+static int
+variant_cmp_op( const void *l, const void *r )
+{
+	const Operation *left = l, *right = r;
+	int diff;
+
+	dnMatch( &diff, 0, NULL, NULL, (struct berval *)&left->o_req_ndn,
+			(void *)&right->o_req_ndn );
+
+	return diff;
+}
+
+static int
+variant_run_mod( void *nop, void *arg )
+{
+	SlapReply nrs = { REP_RESULT };
+	slap_callback cb = { 0 };
+	Operation *op = nop;
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	int *rc = arg;
+
+	cb.sc_response = slap_null_cb;
+	op->o_callback = &cb;
+
+	Debug( LDAP_DEBUG_TRACE, "variant_run_mod: "
+			"running mod on dn=%s\n",
+			op->o_req_ndn.bv_val );
+	*rc = on->on_info->oi_orig->bi_op_modify( op, &nrs );
+	Debug( LDAP_DEBUG_TRACE, "variant_run_mod: "
+			"finished with %d\n", *rc );
+
+	return ( *rc != LDAP_SUCCESS );
+}
+
+/** Move the Modifications back to the original Op so that they can be disposed
+ * of by the original creator
+ */
+static int
+variant_reassign_mods( void *nop, void *arg )
+{
+	Operation *op = nop, *orig_op = arg;
+	Modifications *mod;
+
+	assert( op->orm_modlist );
+
+	for ( mod = op->orm_modlist; mod->sml_next; mod = mod->sml_next )
+		/* get the tail mod */;
+
+	mod->sml_next = orig_op->orm_modlist;
+	orig_op->orm_modlist = op->orm_modlist;
+
+	return LDAP_SUCCESS;
+}
+
+void
+variant_free_op( void *op )
+{
+	ch_free( ((Operation *)op)->o_req_ndn.bv_val );
+	ch_free( op );
+}
+
+static int
+variant_op_mod( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei;
+	variantAttr_info *vai;
+	Avlnode *ops = NULL;
+	Entry *e = NULL;
+	Modifications *mod, *nextmod;
+	regmatch_t pmatch[10];
+	int rc, nmatch = sizeof(pmatch) / sizeof(regmatch_t);
+
+	/* Replication always uses the rootdn */
+	if ( ov->passReplication && SLAPD_SYNC_IS_SYNCCONN(op->o_connid) &&
+			be_isroot( op ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "variant_op_mod: "
+			"dn=%s\n", op->o_req_ndn.bv_val );
+
+	rc = variant_find_config(
+			op, ov, &op->o_req_ndn, VARIANT_INFO_ALL, &vei, nmatch, pmatch );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_TRACE, "variant_op_mod: "
+				"not a variant\n" );
+		rc = SLAP_CB_CONTINUE;
+		goto done;
+	}
+
+	rc = variant_build_entry( op, vei, &op->o_req_ndn, &e, nmatch, pmatch );
+	/* in case of error, just let the backend deal with the mod and the client
+	 * should get a meaningful error back */
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_TRACE, "variant_op_mod: "
+				"failed to retrieve entry\n" );
+		rc = SLAP_CB_CONTINUE;
+		goto done;
+	}
+
+	rc = acl_check_modlist( op, e, op->orm_modlist );
+	entry_free( e );
+
+	if ( !rc ) {
+		rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		send_ldap_error( op, rs, rc, "" );
+		return rc;
+	}
+
+	for ( mod = op->orm_modlist; mod; mod = nextmod ) {
+		Operation needle = { .o_req_ndn = BER_BVNULL }, *nop;
+
+		nextmod = mod->sml_next;
+
+		LDAP_SLIST_FOREACH( vai, &vei->attributes, next ) {
+			if ( vai->attr == mod->sml_desc ) {
+				break;
+			}
+		}
+
+		if ( vai ) {
+			if ( vei->type == VARIANT_INFO_REGEX ) {
+				rc = variant_build_dn(
+						op, vai, nmatch, pmatch, &needle.o_req_ndn );
+				if ( rc != LDAP_SUCCESS ) {
+					continue;
+				}
+			} else {
+				needle.o_req_ndn = vai->dn;
+			}
+
+			nop = ldap_avl_find( ops, &needle, variant_cmp_op );
+			if ( nop == NULL ) {
+				nop = ch_calloc( 1, sizeof(Operation) );
+				*nop = *op;
+
+				ber_dupbv( &nop->o_req_ndn, &needle.o_req_ndn );
+				nop->o_req_dn = nop->o_req_ndn;
+				nop->orm_modlist = NULL;
+
+				rc = ldap_avl_insert( &ops, nop, variant_cmp_op, ldap_avl_dup_error );
+				assert( rc == 0 );
+			}
+			mod->sml_desc = vai->alternative;
+
+			op->orm_modlist = nextmod;
+			mod->sml_next = nop->orm_modlist;
+			nop->orm_modlist = mod;
+
+			if ( vei->type == VARIANT_INFO_REGEX ) {
+				ch_free( needle.o_req_ndn.bv_val );
+			}
+		}
+	}
+
+	if ( !ops ) {
+		Debug( LDAP_DEBUG_TRACE, "variant_op_mod: "
+				"no variant attributes in mod\n" );
+		return SLAP_CB_CONTINUE;
+	}
+
+	/*
+	 * First run original Operation
+	 * This will take care of making sure the entry exists as well.
+	 *
+	 * FIXME?
+	 * Since we cannot make the subsequent Ops atomic wrt. this one, we just
+	 * let it send the response as well. After all, the changes on the main DN
+	 * have finished by then
+	 */
+	rc = on->on_info->oi_orig->bi_op_modify( op, rs );
+	if ( rc == LDAP_SUCCESS ) {
+		/* FIXME: if a mod fails, should we attempt to apply the rest? */
+		ldap_avl_apply( ops, variant_run_mod, &rc, -1, AVL_INORDER );
+	}
+
+	ldap_avl_apply( ops, variant_reassign_mods, op, -1, AVL_INORDER );
+	ldap_avl_free( ops, variant_free_op );
+
+done:
+	Debug( LDAP_DEBUG_TRACE, "variant_op_mod: "
+			"finished with %d\n", rc );
+	return rc;
+}
+
+static int
+variant_search_response( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = op->o_callback->sc_private;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei;
+	int rc;
+
+	if ( rs->sr_type == REP_RESULT ) {
+		ch_free( op->o_callback );
+		op->o_callback = NULL;
+	}
+
+	if ( rs->sr_type != REP_SEARCH ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	rc = variant_find_config(
+			op, ov, &rs->sr_entry->e_nname, VARIANT_INFO_PLAIN, &vei, 0, NULL );
+	if ( rc == LDAP_SUCCESS ) {
+		rs->sr_nentries--;
+		return rc;
+	}
+
+	return SLAP_CB_CONTINUE;
+}
+
+static int
+variant_op_search( Operation *op, SlapReply *rs )
+{
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei;
+	slap_callback *cb;
+	Entry *e = NULL;
+	regmatch_t pmatch[10];
+	int variantInScope = 0, rc = SLAP_CB_CONTINUE,
+		nmatch = sizeof(pmatch) / sizeof(regmatch_t);
+
+	if ( ov->passReplication && ( op->o_sync > SLAP_CONTROL_IGNORED ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	Debug( LDAP_DEBUG_TRACE, "variant_op_search: "
+			"dn=%s, scope=%d\n",
+			op->o_req_ndn.bv_val, op->ors_scope );
+
+	LDAP_STAILQ_FOREACH( vei, &ov->variants, next ) {
+		if ( !dnIsSuffixScope( &vei->dn, &op->o_req_ndn, op->ors_scope ) )
+			continue;
+
+		variantInScope = 1;
+
+		rc = variant_build_entry( op, vei, &vei->dn, &e, 0, NULL );
+		if ( rc == LDAP_NO_SUCH_OBJECT || rc == LDAP_REFERRAL ) {
+			rc = SLAP_CB_CONTINUE;
+			continue;
+		} else if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE, "variant_op_search: "
+					"failed to retrieve entry: dn=%s\n",
+					vei->dn.bv_val );
+			goto done;
+		}
+
+		if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
+			Debug( LDAP_DEBUG_TRACE, "variant_op_search: "
+					"entry matched: dn=%s\n",
+					vei->dn.bv_val );
+			rs->sr_entry = e;
+			rs->sr_attrs = op->ors_attrs;
+			rc = send_search_entry( op, rs );
+		}
+		entry_free( e );
+		e = NULL;
+	}
+
+	/* Three options:
+	 * - the entry has been handled above, in that case vei->type is VARIANT_INFO_PLAIN
+	 * - the entry matches a regex, use the first one and we're finished
+	 * - no configuration matches entry - do nothing
+	 */
+	if ( op->ors_scope == LDAP_SCOPE_BASE &&
+			variant_find_config( op, ov, &op->o_req_ndn, VARIANT_INFO_ALL, &vei,
+					nmatch, pmatch ) == LDAP_SUCCESS &&
+			vei->type == VARIANT_INFO_REGEX ) {
+		rc = variant_build_entry( op, vei, &op->o_req_ndn, &e, nmatch, pmatch );
+		if ( rc == LDAP_NO_SUCH_OBJECT || rc == LDAP_REFERRAL ) {
+			rc = SLAP_CB_CONTINUE;
+		} else if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_TRACE, "variant_op_search: "
+					"failed to retrieve entry: dn=%s\n",
+					vei->dn.bv_val );
+			goto done;
+		} else {
+			if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
+				Debug( LDAP_DEBUG_TRACE, "variant_op_search: "
+						"entry matched: dn=%s\n",
+						vei->dn.bv_val );
+				rs->sr_entry = e;
+				rs->sr_attrs = op->ors_attrs;
+				rc = send_search_entry( op, rs );
+			}
+			entry_free( e );
+			e = NULL;
+			goto done;
+		}
+	}
+	rc = SLAP_CB_CONTINUE;
+
+	if ( variantInScope ) {
+		cb = ch_calloc( 1, sizeof(slap_callback) );
+		cb->sc_private = on;
+		cb->sc_response = variant_search_response;
+		cb->sc_next = op->o_callback;
+
+		op->o_callback = cb;
+	}
+
+done:
+	if ( rc != SLAP_CB_CONTINUE ) {
+		rs->sr_err = (rc == LDAP_SUCCESS) ? rc : LDAP_OTHER;
+		send_ldap_result( op, rs );
+	}
+	Debug( LDAP_DEBUG_TRACE, "variant_op_search: "
+			"finished with %d\n", rc );
+	return rc;
+}
+
+/* Configuration */
+
+static ConfigLDAPadd variant_ldadd;
+static ConfigLDAPadd variant_regex_ldadd;
+static ConfigLDAPadd variant_attr_ldadd;
+
+static ConfigDriver variant_set_dn;
+static ConfigDriver variant_set_regex;
+static ConfigDriver variant_set_alt_dn;
+static ConfigDriver variant_set_alt_pattern;
+static ConfigDriver variant_set_attribute;
+static ConfigDriver variant_add_alt_attr;
+static ConfigDriver variant_add_alt_attr_regex;
+
+static ConfigCfAdd variant_cfadd;
+
+enum
+{
+	VARIANT_ATTR = 1,
+	VARIANT_ATTR_ALT,
+
+	VARIANT_LAST,
+};
+
+static ConfigTable variant_cfg[] = {
+	{ "passReplication", "on|off", 2, 2, 0,
+		ARG_ON_OFF|ARG_OFFSET,
+		(void *)offsetof( variant_info_t, passReplication ),
+		"( OLcfgOvAt:FIXME.1 NAME 'olcVariantPassReplication' "
+			"DESC 'Whether to let searches with replication control "
+				"pass unmodified' "
+			"SYNTAX OMsBoolean "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	{ "variantDN", "dn", 2, 2, 0,
+		ARG_DN|ARG_QUOTE|ARG_MAGIC,
+		variant_set_dn,
+		"( OLcfgOvAt:FIXME.2 NAME 'olcVariantEntry' "
+			"DESC 'DN of the variant entry' "
+			"EQUALITY distinguishedNameMatch "
+			"SYNTAX OMsDN "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	{ "variantRegex", "regex", 2, 2, 0,
+		ARG_BERVAL|ARG_QUOTE|ARG_MAGIC,
+		variant_set_regex,
+		"( OLcfgOvAt:FIXME.6 NAME 'olcVariantEntryRegex' "
+			"DESC 'Pattern for the variant entry' "
+			"EQUALITY caseExactMatch "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	/* These have no equivalent in slapd.conf */
+	{ "", NULL, 2, 2, 0,
+		ARG_STRING|ARG_MAGIC|VARIANT_ATTR,
+		variant_set_attribute,
+		"( OLcfgOvAt:FIXME.3 NAME 'olcVariantVariantAttribute' "
+			"DESC 'Attribute to fill in the entry' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	{ "", NULL, 2, 2, 0,
+		ARG_STRING|ARG_MAGIC|VARIANT_ATTR_ALT,
+		variant_set_attribute,
+		"( OLcfgOvAt:FIXME.4 NAME 'olcVariantAlternativeAttribute' "
+			"DESC 'Attribute to take from the alternative entry' "
+			"EQUALITY caseIgnoreMatch "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	{ "", NULL, 2, 2, 0,
+		ARG_DN|ARG_QUOTE|ARG_MAGIC,
+		variant_set_alt_dn,
+		"( OLcfgOvAt:FIXME.5 NAME 'olcVariantAlternativeEntry' "
+			"DESC 'DN of the alternative entry' "
+			"EQUALITY distinguishedNameMatch "
+			"SYNTAX OMsDN "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	{ "", NULL, 2, 2, 0,
+		ARG_BERVAL|ARG_QUOTE|ARG_MAGIC,
+		variant_set_alt_pattern,
+		"( OLcfgOvAt:FIXME.7 NAME 'olcVariantAlternativeEntryPattern' "
+			"DESC 'Replacement pattern to locate the alternative entry' "
+			"EQUALITY caseExactMatch "
+			"SYNTAX OMsDirectoryString "
+			"SINGLE-VALUE )",
+			NULL, NULL
+	},
+	/* slapd.conf alternatives for the four above */
+	{ "variantSpec", "attr attr2 dn", 4, 4, 0,
+		ARG_QUOTE|ARG_MAGIC,
+		variant_add_alt_attr,
+		NULL, NULL, NULL
+	},
+	{ "variantRegexSpec", "attr attr2 pattern", 4, 4, 0,
+		ARG_QUOTE|ARG_MAGIC,
+		variant_add_alt_attr_regex,
+		NULL, NULL, NULL
+	},
+
+	{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs variant_ocs[] = {
+	{ "( OLcfgOvOc:FIXME.1 "
+		"NAME 'olcVariantConfig' "
+		"DESC 'Variant overlay configuration' "
+		"SUP olcOverlayConfig "
+		"MAY ( olcVariantPassReplication ) )",
+		Cft_Overlay, variant_cfg, NULL, variant_cfadd },
+	{ "( OLcfgOvOc:FIXME.2 "
+		"NAME 'olcVariantVariant' "
+		"DESC 'Variant configuration' "
+		"MUST ( olcVariantEntry ) "
+		"MAY ( name ) "
+		"SUP top "
+		"STRUCTURAL )",
+		Cft_Misc, variant_cfg, variant_ldadd },
+	{ "( OLcfgOvOc:FIXME.3 "
+		"NAME 'olcVariantAttribute' "
+		"DESC 'Variant attribute description' "
+		"MUST ( olcVariantVariantAttribute $ "
+			"olcVariantAlternativeAttribute $ "
+			"olcVariantAlternativeEntry "
+		") "
+		"MAY name "
+		"SUP top "
+		"STRUCTURAL )",
+		Cft_Misc, variant_cfg, variant_attr_ldadd },
+	{ "( OLcfgOvOc:FIXME.4 "
+		"NAME 'olcVariantRegex' "
+		"DESC 'Variant configuration' "
+		"MUST ( olcVariantEntryRegex ) "
+		"MAY ( name ) "
+		"SUP top "
+		"STRUCTURAL )",
+		Cft_Misc, variant_cfg, variant_regex_ldadd },
+	{ "( OLcfgOvOc:FIXME.5 "
+		"NAME 'olcVariantAttributePattern' "
+		"DESC 'Variant attribute description' "
+		"MUST ( olcVariantVariantAttribute $ "
+			"olcVariantAlternativeAttribute $ "
+			"olcVariantAlternativeEntryPattern "
+		") "
+		"MAY name "
+		"SUP top "
+		"STRUCTURAL )",
+		Cft_Misc, variant_cfg, variant_attr_ldadd },
+
+	{ NULL, 0, NULL }
+};
+
+static int
+variant_set_dn( ConfigArgs *ca )
+{
+	variantEntry_info *vei2, *vei = ca->ca_private;
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	variant_info_t *ov = on->on_bi.bi_private;
+	int diff;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		value_add_one( &ca->rvalue_vals, &vei->dn );
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		ber_memfree( vei->dn.bv_val );
+		BER_BVZERO( &vei->dn );
+		return LDAP_SUCCESS;
+	}
+
+	if ( !vei ) {
+		vei = ch_calloc( 1, sizeof(variantEntry_info) );
+		vei->ov = ov;
+		vei->type = VARIANT_INFO_PLAIN;
+		LDAP_SLIST_INIT(&vei->attributes);
+		LDAP_STAILQ_ENTRY_INIT(vei, next);
+		LDAP_STAILQ_INSERT_TAIL(&ov->variants, vei, next);
+
+		ca->ca_private = vei;
+	}
+	vei->dn = ca->value_ndn;
+	ber_memfree( ca->value_dn.bv_val );
+
+	/* Each DN should only be listed once */
+	LDAP_STAILQ_FOREACH( vei2, &vei->ov->variants, next ) {
+		if ( vei == vei2 ) continue;
+
+		dnMatch( &diff, 0, NULL, NULL, &vei->dn, &vei2->dn );
+		if ( !diff ) {
+			ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+			return ca->reply.err;
+		}
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_set_regex( ConfigArgs *ca )
+{
+	variantEntry_info *vei2, *vei = ca->ca_private;
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	variant_info_t *ov = on->on_bi.bi_private;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_bv = vei->dn;
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		ber_memfree( vei->dn.bv_val );
+		BER_BVZERO( &vei->dn );
+		regfree( vei->regex );
+		return LDAP_SUCCESS;
+	}
+
+	if ( !vei ) {
+		vei = ch_calloc( 1, sizeof(variantEntry_info) );
+		vei->ov = ov;
+		vei->type = VARIANT_INFO_REGEX;
+		LDAP_SLIST_INIT(&vei->attributes);
+		LDAP_STAILQ_ENTRY_INIT(vei, next);
+		LDAP_STAILQ_INSERT_TAIL(&ov->regex_variants, vei, next);
+
+		ca->ca_private = vei;
+	}
+	vei->dn = ca->value_bv;
+
+	/* Each regex should only be listed once */
+	LDAP_STAILQ_FOREACH( vei2, &vei->ov->regex_variants, next ) {
+		if ( vei == vei2 ) continue;
+
+		if ( !ber_bvcmp( &ca->value_bv, &vei2->dn ) ) {
+			ch_free( vei );
+			ca->ca_private = NULL;
+			ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+			return ca->reply.err;
+		}
+	}
+
+	vei->regex = ch_calloc( 1, sizeof(regex_t) );
+	if ( regcomp( vei->regex, vei->dn.bv_val, REG_EXTENDED ) ) {
+		ch_free( vei->regex );
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_set_alt_dn( ConfigArgs *ca )
+{
+	variantAttr_info *vai = ca->ca_private;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		value_add_one( &ca->rvalue_vals, &vai->dn );
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		ber_memfree( vai->dn.bv_val );
+		BER_BVZERO( &vai->dn );
+		return LDAP_SUCCESS;
+	}
+
+	vai->dn = ca->value_ndn;
+	ber_memfree( ca->value_dn.bv_val );
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_set_alt_pattern( ConfigArgs *ca )
+{
+	variantAttr_info *vai = ca->ca_private;
+	char *p = ca->value_bv.bv_val,
+		 *end = ca->value_bv.bv_val + ca->value_bv.bv_len;
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_bv = vai->dn;
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		ber_memfree( vai->dn.bv_val );
+		BER_BVZERO( &vai->dn );
+		return LDAP_SUCCESS;
+	}
+
+	while ( (p = memchr( p, '$', end - p )) != NULL ) {
+		p += 1;
+
+		if ( ( ( *p >= '0' ) && ( *p <= '9' ) ) || ( *p == '$' ) ) {
+			p += 1;
+		} else {
+			Debug( LDAP_DEBUG_ANY, "variant_set_alt_pattern: "
+					"invalid replacement pattern supplied '%s'\n",
+					ca->value_bv.bv_val );
+			ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+			return ca->reply.err;
+		}
+	}
+
+	vai->dn = ca->value_bv;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_set_attribute( ConfigArgs *ca )
+{
+	variantAttr_info *vai2, *vai = ca->ca_private;
+	char *s = ca->value_string;
+	const char *text;
+	AttributeDescription **ad;
+	int rc;
+
+	if ( ca->type == VARIANT_ATTR ) {
+		ad = &vai->attr;
+	} else {
+		ad = &vai->alternative;
+	}
+
+	if ( ca->op == SLAP_CONFIG_EMIT ) {
+		ca->value_string = ch_strdup( (*ad)->ad_cname.bv_val );
+		return LDAP_SUCCESS;
+	} else if ( ca->op == LDAP_MOD_DELETE ) {
+		*ad = NULL;
+		return LDAP_SUCCESS;
+	}
+
+	if ( *s == '{' ) {
+		s = strchr( s, '}' );
+		if ( !s ) {
+			ca->reply.err = LDAP_UNDEFINED_TYPE;
+			return ca->reply.err;
+		}
+		s += 1;
+	}
+
+	rc = slap_str2ad( s, ad, &text );
+	ber_memfree( ca->value_string );
+	if ( rc ) {
+		return rc;
+	}
+
+	/* Both attributes have to share the same syntax */
+	if ( vai->attr && vai->alternative &&
+			vai->attr->ad_type->sat_syntax !=
+					vai->alternative->ad_type->sat_syntax ) {
+		ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+		return ca->reply.err;
+	}
+
+	if ( ca->type == VARIANT_ATTR ) {
+		/* Each attribute should only be listed once */
+		LDAP_SLIST_FOREACH( vai2, &vai->variant->attributes, next ) {
+			if ( vai == vai2 ) continue;
+			if ( vai->attr == vai2->attr ) {
+				ca->reply.err = LDAP_CONSTRAINT_VIOLATION;
+				return ca->reply.err;
+			}
+		}
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_add_alt_attr( ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei =
+			LDAP_STAILQ_LAST( &ov->variants, variantEntry_info, next );
+	variantAttr_info *vai;
+	struct berval dn, ndn;
+	int rc;
+
+	vai = ch_calloc( 1, sizeof(variantAttr_info) );
+	vai->variant = vei;
+	LDAP_SLIST_ENTRY_INIT( vai, next );
+	ca->ca_private = vai;
+
+	ca->value_string = ch_strdup( ca->argv[1] );
+	ca->type = VARIANT_ATTR;
+	rc = variant_set_attribute( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	ca->value_string = ch_strdup( ca->argv[2] );
+	ca->type = VARIANT_ATTR_ALT;
+	rc = variant_set_attribute( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	dn.bv_val = ca->argv[3];
+	dn.bv_len = strlen( dn.bv_val );
+	rc = dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	ca->type = 0;
+	BER_BVZERO( &ca->value_dn );
+	ca->value_ndn = ndn;
+	rc = variant_set_alt_dn( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		ch_free( ndn.bv_val );
+		goto done;
+	}
+
+done:
+	if ( rc == LDAP_SUCCESS ) {
+		LDAP_SLIST_INSERT_HEAD( &vei->attributes, vai, next );
+	} else {
+		ca->reply.err = rc;
+	}
+
+	return rc;
+}
+
+static int
+variant_add_alt_attr_regex( ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei =
+			LDAP_STAILQ_LAST( &ov->regex_variants, variantEntry_info, next );
+	variantAttr_info *vai;
+	int rc;
+
+	vai = ch_calloc( 1, sizeof(variantAttr_info) );
+	vai->variant = vei;
+	LDAP_SLIST_ENTRY_INIT( vai, next );
+	ca->ca_private = vai;
+
+	ca->value_string = ch_strdup( ca->argv[1] );
+	ca->type = VARIANT_ATTR;
+	rc = variant_set_attribute( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	ca->value_string = ch_strdup( ca->argv[2] );
+	ca->type = VARIANT_ATTR_ALT;
+	rc = variant_set_attribute( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	ca->type = 0;
+	ber_str2bv( ca->argv[3], 0, 1, &ca->value_bv );
+	rc = variant_set_alt_pattern( ca );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+done:
+	if ( rc == LDAP_SUCCESS ) {
+		LDAP_SLIST_INSERT_HEAD( &vei->attributes, vai, next );
+	} else {
+		ca->reply.err = rc;
+	}
+
+	return rc;
+}
+
+static int
+variant_ldadd_cleanup( ConfigArgs *ca )
+{
+	variantEntry_info *vei = ca->ca_private;
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	variant_info_t *ov = on->on_bi.bi_private;
+
+	if ( ca->reply.err != LDAP_SUCCESS ) {
+		assert( LDAP_SLIST_EMPTY(&vei->attributes) );
+		ch_free( vei );
+		return LDAP_SUCCESS;
+	}
+
+	if ( vei->type == VARIANT_INFO_PLAIN ) {
+		LDAP_STAILQ_INSERT_TAIL(&ov->variants, vei, next);
+	} else {
+		LDAP_STAILQ_INSERT_TAIL(&ov->regex_variants, vei, next);
+	}
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+	slap_overinst *on;
+	variant_info_t *ov;
+	variantEntry_info *vei;
+
+	if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
+			cei->ce_bi->bi_cf_ocs != variant_ocs )
+		return LDAP_CONSTRAINT_VIOLATION;
+
+	on = (slap_overinst *)cei->ce_bi;
+	ov = on->on_bi.bi_private;
+
+	vei = ch_calloc( 1, sizeof(variantEntry_info) );
+	vei->ov = ov;
+	vei->type = VARIANT_INFO_PLAIN;
+	LDAP_SLIST_INIT(&vei->attributes);
+	LDAP_STAILQ_ENTRY_INIT(vei, next);
+
+	ca->bi = cei->ce_bi;
+	ca->ca_private = vei;
+	config_push_cleanup( ca, variant_ldadd_cleanup );
+	/* config_push_cleanup is only run in the case of online config but we use it to
+	 * save the new config when done with the entry */
+	ca->lineno = 0;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_regex_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+	slap_overinst *on;
+	variant_info_t *ov;
+	variantEntry_info *vei;
+
+	if ( cei->ce_type != Cft_Overlay || !cei->ce_bi ||
+			cei->ce_bi->bi_cf_ocs != variant_ocs )
+		return LDAP_CONSTRAINT_VIOLATION;
+
+	on = (slap_overinst *)cei->ce_bi;
+	ov = on->on_bi.bi_private;
+
+	vei = ch_calloc( 1, sizeof(variantEntry_info) );
+	vei->ov = ov;
+	vei->type = VARIANT_INFO_REGEX;
+	LDAP_SLIST_INIT(&vei->attributes);
+	LDAP_STAILQ_ENTRY_INIT(vei, next);
+
+	ca->bi = cei->ce_bi;
+	ca->ca_private = vei;
+	config_push_cleanup( ca, variant_ldadd_cleanup );
+	/* config_push_cleanup is only run in the case of online config but we use it to
+	 * save the new config when done with the entry */
+	ca->lineno = 0;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_attr_ldadd_cleanup( ConfigArgs *ca )
+{
+	variantAttr_info *vai = ca->ca_private;
+	variantEntry_info *vei = vai->variant;
+
+	if ( ca->reply.err != LDAP_SUCCESS ) {
+		ch_free( vai );
+		return LDAP_SUCCESS;
+	}
+
+	LDAP_SLIST_INSERT_HEAD(&vei->attributes, vai, next);
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_attr_ldadd( CfEntryInfo *cei, Entry *e, ConfigArgs *ca )
+{
+	variantEntry_info *vei;
+	variantAttr_info *vai;
+	CfEntryInfo *parent = cei->ce_parent;
+
+	if ( cei->ce_type != Cft_Misc || !parent || !parent->ce_bi ||
+			parent->ce_bi->bi_cf_ocs != variant_ocs )
+		return LDAP_CONSTRAINT_VIOLATION;
+
+	vei = (variantEntry_info *)cei->ce_private;
+
+	vai = ch_calloc( 1, sizeof(variantAttr_info) );
+	vai->variant = vei;
+	LDAP_SLIST_ENTRY_INIT(vai, next);
+
+	ca->ca_private = vai;
+	config_push_cleanup( ca, variant_attr_ldadd_cleanup );
+	/* config_push_cleanup is only run in the case of online config but we use it to
+	 * save the new config when done with the entry */
+	ca->lineno = 0;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
+{
+	slap_overinst *on = (slap_overinst *)ca->bi;
+	variant_info_t *ov = on->on_bi.bi_private;
+	variantEntry_info *vei;
+	variantAttr_info *vai;
+	Entry *e;
+	struct berval rdn;
+	int i = 0;
+
+	LDAP_STAILQ_FOREACH( vei, &ov->variants, next ) {
+		int j = 0;
+		rdn.bv_len = snprintf(
+				ca->cr_msg, sizeof(ca->cr_msg), "name={%d}variant", i++ );
+		rdn.bv_val = ca->cr_msg;
+
+		ca->ca_private = vei;
+		e = config_build_entry(
+				op, rs, p->e_private, ca, &rdn, &variant_ocs[1], NULL );
+		assert( e );
+
+		LDAP_SLIST_FOREACH( vai, &vei->attributes, next ) {
+			rdn.bv_len = snprintf( ca->cr_msg, sizeof(ca->cr_msg),
+					"olcVariantVariantAttribute={%d}%s", j++,
+					vai->attr->ad_cname.bv_val );
+			rdn.bv_val = ca->cr_msg;
+
+			ca->ca_private = vai;
+			config_build_entry(
+					op, rs, e->e_private, ca, &rdn, &variant_ocs[2], NULL );
+		}
+	}
+
+	LDAP_STAILQ_FOREACH( vei, &ov->regex_variants, next ) {
+		int j = 0;
+		rdn.bv_len = snprintf(
+				ca->cr_msg, sizeof(ca->cr_msg), "name={%d}regex", i++ );
+		rdn.bv_val = ca->cr_msg;
+
+		ca->ca_private = vei;
+		e = config_build_entry(
+				op, rs, p->e_private, ca, &rdn, &variant_ocs[3], NULL );
+		assert( e );
+
+		LDAP_SLIST_FOREACH( vai, &vei->attributes, next ) {
+			rdn.bv_len = snprintf( ca->cr_msg, sizeof(ca->cr_msg),
+					"olcVariantVariantAttribute={%d}%s", j++,
+					vai->attr->ad_cname.bv_val );
+			rdn.bv_val = ca->cr_msg;
+
+			ca->ca_private = vai;
+			config_build_entry(
+					op, rs, e->e_private, ca, &rdn, &variant_ocs[4], NULL );
+		}
+	}
+	return LDAP_SUCCESS;
+}
+
+static slap_overinst variant;
+
+static int
+variant_db_init( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	variant_info_t *ov;
+
+	if ( SLAP_ISGLOBALOVERLAY(be) ) {
+		Debug( LDAP_DEBUG_ANY, "variant overlay must be instantiated within "
+				"a database.\n" );
+		return 1;
+	}
+
+	ov = ch_calloc( 1, sizeof(variant_info_t) );
+	LDAP_STAILQ_INIT(&ov->variants);
+	LDAP_STAILQ_INIT(&ov->regex_variants);
+
+	on->on_bi.bi_private = ov;
+
+	return LDAP_SUCCESS;
+}
+
+static int
+variant_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+	slap_overinst *on = (slap_overinst *)be->bd_info;
+	variant_info_t *ov = on->on_bi.bi_private;
+
+	if ( ov ) {
+		while ( !LDAP_STAILQ_EMPTY( &ov->variants ) ) {
+			variantEntry_info *vei = LDAP_STAILQ_FIRST( &ov->variants );
+			LDAP_STAILQ_REMOVE_HEAD( &ov->variants, next );
+
+			while ( !LDAP_SLIST_EMPTY( &vei->attributes ) ) {
+				variantAttr_info *vai = LDAP_SLIST_FIRST( &vei->attributes );
+				LDAP_SLIST_REMOVE_HEAD( &vei->attributes, next );
+
+				ber_memfree( vai->dn.bv_val );
+				ch_free( vai );
+			}
+			ber_memfree( vei->dn.bv_val );
+			ch_free( vei );
+		}
+		while ( !LDAP_STAILQ_EMPTY( &ov->regex_variants ) ) {
+			variantEntry_info *vei = LDAP_STAILQ_FIRST( &ov->regex_variants );
+			LDAP_STAILQ_REMOVE_HEAD( &ov->regex_variants, next );
+
+			while ( !LDAP_SLIST_EMPTY( &vei->attributes ) ) {
+				variantAttr_info *vai = LDAP_SLIST_FIRST( &vei->attributes );
+				LDAP_SLIST_REMOVE_HEAD( &vei->attributes, next );
+
+				ber_memfree( vai->dn.bv_val );
+				ch_free( vai );
+			}
+			ber_memfree( vei->dn.bv_val );
+			ch_free( vei );
+		}
+		ch_free( ov );
+	}
+
+	return LDAP_SUCCESS;
+}
+
+int
+variant_initialize()
+{
+	int rc;
+
+	variant.on_bi.bi_type = "variant";
+	variant.on_bi.bi_db_init = variant_db_init;
+	variant.on_bi.bi_db_destroy = variant_db_destroy;
+
+	variant.on_bi.bi_op_add = variant_op_add;
+	variant.on_bi.bi_op_compare = variant_op_compare;
+	variant.on_bi.bi_op_modify = variant_op_mod;
+	variant.on_bi.bi_op_search = variant_op_search;
+
+	variant.on_bi.bi_cf_ocs = variant_ocs;
+
+	rc = config_register_schema( variant_cfg, variant_ocs );
+	if ( rc ) return rc;
+
+	return overlay_register( &variant );
+}
+
+#if SLAPD_OVER_VARIANT == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+	return variant_initialize();
+}
+#endif
+
+#endif /* SLAPD_OVER_VARIANT */
diff --git a/contrib/slapd-modules/vc/Makefile b/contrib/slapd-modules/vc/Makefile
new file mode 100644
index 0000000..9fe67ab
--- /dev/null
+++ b/contrib/slapd-modules/vc/Makefile
@@ -0,0 +1,58 @@
+# $OpenLDAP$
+# This work is part of OpenLDAP Software <http://www.openldap.org/>.
+#
+# Copyright 1998-2022 The OpenLDAP Foundation.
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LDAP_SRC = ../../..
+LDAP_BUILD = $(LDAP_SRC)
+LDAP_INC = -I$(LDAP_BUILD)/include -I$(LDAP_SRC)/include -I$(LDAP_SRC)/servers/slapd
+LDAP_LIB = $(LDAP_BUILD)/libraries/libldap/libldap.la \
+	$(LDAP_BUILD)/libraries/liblber/liblber.la
+
+LIBTOOL = $(LDAP_BUILD)/libtool
+CC = gcc
+OPT = -g -O2
+DEFS = 
+INCS = $(LDAP_INC)
+LIBS = $(LDAP_LIB)
+
+PROGRAMS = vc.la
+LTVER = 0:0:0
+
+prefix=/usr/local
+exec_prefix=$(prefix)
+ldap_subdir=/openldap
+
+libdir=$(exec_prefix)/lib
+libexecdir=$(exec_prefix)/libexec
+moduledir = $(libexecdir)$(ldap_subdir)
+
+.SUFFIXES: .c .o .lo
+
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) $(OPT) $(CPPFLAGS) $(DEFS) $(INCS) -c $<
+
+all: $(PROGRAMS)
+
+vc.la:	vc.lo
+	$(LIBTOOL) --mode=link $(CC) $(LDFLAGS) -version-info $(LTVER) \
+	-rpath $(moduledir) -module -o $@ $? $(LIBS)
+
+clean:
+	rm -rf *.o *.lo *.la .libs
+
+install: $(PROGRAMS)
+	mkdir -p $(DESTDIR)$(moduledir)
+	for p in $(PROGRAMS) ; do \
+		$(LIBTOOL) --mode=install cp $$p $(DESTDIR)$(moduledir) ; \
+	done
+
diff --git a/contrib/slapd-modules/vc/vc.c b/contrib/slapd-modules/vc/vc.c
new file mode 100644
index 0000000..0760af2
--- /dev/null
+++ b/contrib/slapd-modules/vc/vc.c
@@ -0,0 +1,439 @@
+/* vc.c - LDAP Verify Credentials extop (no spec yet) */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2010-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion
+ * in OpenLDAP Software.
+ */
+
+/*
+ * LDAP Verify Credentials: suggested by Kurt Zeilenga
+ * no spec yet
+ */
+
+#include "portable.h"
+
+#include "slap.h"
+#include "ac/string.h"
+
+typedef struct vc_conn_t {
+	struct vc_conn_t *conn;
+	Connection connbuf;
+	OperationBuffer opbuf;
+	Operation *op;
+	int refcnt;
+} vc_conn_t;
+
+static const struct berval vc_exop_oid_bv = BER_BVC(LDAP_EXOP_VERIFY_CREDENTIALS);
+static ldap_pvt_thread_mutex_t vc_mutex;
+static Avlnode *vc_tree;
+
+static int
+vc_conn_cmp( const void *c1, const void *c2 )
+{
+	const vc_conn_t *vc1 = (const vc_conn_t *)c1;
+	const vc_conn_t *vc2 = (const vc_conn_t *)c2;
+
+	return SLAP_PTRCMP( vc1->conn, vc2->conn );
+}
+
+static int
+vc_conn_dup( void *c1, void *c2 )
+{
+	vc_conn_t *vc1 = (vc_conn_t *)c1;
+	vc_conn_t *vc2 = (vc_conn_t *)c2;
+
+	if ( vc1->conn == vc2->conn ) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+vc_create_response(
+	void *conn,
+	int resultCode,
+	const char *diagnosticMessage,
+	struct berval *servercred,
+	struct berval *authzid,
+	LDAPControl **ctrls,
+	struct berval **val )
+{
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	struct berval bv;
+	int rc;
+
+	assert( val != NULL );
+
+	*val = NULL;
+
+	ber_init2( ber, NULL, LBER_USE_DER );
+
+	(void)ber_printf( ber, "{is" /*}*/ , resultCode, diagnosticMessage ? diagnosticMessage : "" );
+
+	if ( conn ) {
+		struct berval cookie;
+
+		cookie.bv_len = sizeof( conn );
+		cookie.bv_val = (char *)&conn;
+		(void)ber_printf( ber, "tO", 0, LDAP_TAG_EXOP_VERIFY_CREDENTIALS_COOKIE, &cookie ); 
+	}
+
+	if ( servercred ) {
+		ber_printf( ber, "tO", LDAP_TAG_EXOP_VERIFY_CREDENTIALS_SCREDS, servercred ); 
+	}
+
+#if 0
+	if ( authzid ) {
+		ber_printf( ber, "tO", LDAP_TAG_EXOP_VERIFY_CREDENTIALS_AUTHZID, authzid ); 
+	}
+#endif
+
+	if ( ctrls ) {
+		int c;
+
+		rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_EXOP_VERIFY_CREDENTIALS_CONTROLS );
+		if ( rc == -1 ) goto done;
+
+		for ( c = 0; ctrls[c] != NULL; c++ ) {
+			rc = ber_printf( ber, "{s" /*}*/, ctrls[c]->ldctl_oid );
+
+			if ( ctrls[c]->ldctl_iscritical ) {
+				rc = ber_printf( ber, "b", (ber_int_t)ctrls[c]->ldctl_iscritical ) ;
+				if ( rc == -1 ) goto done;
+			}
+
+			if ( ctrls[c]->ldctl_value.bv_val != NULL ) {
+				rc = ber_printf( ber, "O", &ctrls[c]->ldctl_value ); 
+				if( rc == -1 ) goto done;
+			}
+
+			rc = ber_printf( ber, /*{*/"N}" );
+			if ( rc == -1 ) goto done;
+		}
+
+		rc = ber_printf( ber, /*{*/"N}" );
+		if ( rc == -1 ) goto done;
+	}
+
+	rc = ber_printf( ber, /*{*/ "}" );
+	if ( rc == -1 ) goto done;
+
+	rc = ber_flatten2( ber, &bv, 0 );
+	if ( rc == 0 ) {
+		*val = ber_bvdup( &bv );
+	}
+
+done:;
+	ber_free_buf( ber );
+
+	return rc;
+}
+
+typedef struct vc_cb_t {
+	struct berval sasldata;
+	LDAPControl **ctrls;
+} vc_cb_t;
+
+static int
+vc_cb(
+	Operation	*op,
+	SlapReply	*rs )
+{
+	vc_cb_t *vc = (vc_cb_t *)op->o_callback->sc_private;
+
+	if ( rs->sr_tag == LDAP_RES_BIND ) {
+		if ( rs->sr_sasldata != NULL ) {
+			ber_dupbv( &vc->sasldata, rs->sr_sasldata );
+		}
+
+		if ( rs->sr_ctrls != NULL ) {
+			vc->ctrls = ldap_controls_dup( rs->sr_ctrls );
+		}
+	}
+
+	return 0;
+}
+
+static int
+vc_exop(
+	Operation	*op,
+	SlapReply	*rs )
+{
+	int rc = LDAP_SUCCESS;
+	ber_tag_t tag;
+	ber_len_t len = -1;
+	BerElementBuffer berbuf;
+	BerElement *ber = (BerElement *)&berbuf;
+	struct berval reqdata = BER_BVNULL;
+
+	struct berval cookie = BER_BVNULL;
+	struct berval bdn = BER_BVNULL;
+	ber_tag_t authtag;
+	struct berval cred = BER_BVNULL;
+	struct berval ndn = BER_BVNULL;
+	struct berval mechanism = BER_BVNULL;
+
+	vc_conn_t *conn = NULL;
+	vc_cb_t vc = { 0 };
+	slap_callback sc = { 0 };
+	SlapReply rs2 = { 0 };
+
+	if ( op->ore_reqdata == NULL || op->ore_reqdata->bv_len == 0 ) {
+		rs->sr_text = "empty request data field in VerifyCredentials exop";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
+	/* optimistic */
+	rs->sr_err = LDAP_SUCCESS;
+
+	ber_dupbv_x( &reqdata, op->ore_reqdata, op->o_tmpmemctx );
+
+	/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+	ber_init2( ber, &reqdata, 0 );
+
+	tag = ber_scanf( ber, "{" /*}*/ );
+	if ( tag != LBER_SEQUENCE ) {
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+
+	tag = ber_peek_tag( ber, &len );
+	if ( tag == LDAP_TAG_EXOP_VERIFY_CREDENTIALS_COOKIE ) {
+		/*
+		 * cookie: the pointer to the connection
+		 * of this operation
+		 */
+
+		ber_scanf( ber, "m", &cookie );
+		if ( cookie.bv_len != sizeof(Connection *) ) {
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+	}
+
+	/* DN, authtag */
+	tag = ber_scanf( ber, "mt", &bdn, &authtag );
+	if ( tag == LBER_ERROR ) {
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+
+	rc = dnNormalize( 0, NULL, NULL, &bdn, &ndn, op->o_tmpmemctx );
+	if ( rc != LDAP_SUCCESS ) {
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+
+	switch ( authtag ) {
+	case LDAP_AUTH_SIMPLE:
+		/* cookie only makes sense for SASL bind (so far) */
+		if ( !BER_BVISNULL( &cookie ) ) {
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+
+		tag = ber_scanf( ber, "m", &cred );
+		if ( tag == LBER_ERROR ) {
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+		break;
+
+	case LDAP_AUTH_SASL:
+		tag = ber_scanf( ber, "{m" /*}*/ , &mechanism );
+		if ( tag == LBER_ERROR || 
+			BER_BVISNULL( &mechanism ) || BER_BVISEMPTY( &mechanism ) )
+		{
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+
+		tag = ber_peek_tag( ber, &len );
+		if ( tag == LBER_OCTETSTRING ) {
+			ber_scanf( ber, "m", &cred );
+		}
+
+		tag = ber_scanf( ber, /*{*/ "}" );
+		break;
+
+	default:
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+
+	if ( !BER_BVISNULL( &cookie ) ) {
+		vc_conn_t tmp = { 0 };
+
+		AC_MEMCPY( (char *)&tmp.conn, (const char *)cookie.bv_val, cookie.bv_len );
+		ldap_pvt_thread_mutex_lock( &vc_mutex );
+		conn = (vc_conn_t *)ldap_avl_find( vc_tree, (caddr_t)&tmp, vc_conn_cmp );
+		if ( conn == NULL || ( conn != NULL && conn->refcnt != 0 ) ) {
+			conn = NULL;
+			ldap_pvt_thread_mutex_unlock( &vc_mutex );
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+		conn->refcnt++;
+		operation_counter_init( conn->op, op->o_threadctx );
+		ldap_pvt_thread_mutex_unlock( &vc_mutex );
+
+	} else {
+		conn = (vc_conn_t *)SLAP_CALLOC( 1, sizeof( vc_conn_t ) );
+		conn->refcnt = 1;
+
+		connection_fake_init2( &conn->connbuf, &conn->opbuf, op->o_threadctx, 0 );
+		conn->op = &conn->opbuf.ob_op;
+		snprintf( conn->op->o_log_prefix, sizeof( conn->op->o_log_prefix ),
+			"%s VERIFYCREDENTIALS", op->o_log_prefix );
+	}
+
+	conn->op->o_tag = LDAP_REQ_BIND;
+	memset( &conn->op->oq_bind, 0, sizeof( conn->op->oq_bind ) );
+	conn->op->o_req_dn = ndn;
+	conn->op->o_req_ndn = ndn;
+	conn->op->o_protocol = LDAP_VERSION3;
+	conn->op->orb_method = authtag;
+	conn->op->o_callback = &sc;
+
+	/* TODO: controls */
+	tag = ber_peek_tag( ber, &len );
+	if ( tag == LDAP_TAG_EXOP_VERIFY_CREDENTIALS_CONTROLS ) {
+		conn->op->o_ber = ber;
+		rc = get_ctrls2( conn->op, &rs2, 0, LDAP_TAG_EXOP_VERIFY_CREDENTIALS_CONTROLS );
+		if ( rc != LDAP_SUCCESS ) {
+			rs->sr_err = LDAP_PROTOCOL_ERROR;
+			goto done;
+		}
+	}
+
+	tag = ber_skip_tag( ber, &len );
+	if ( len || tag != LBER_DEFAULT ) {
+		rs->sr_err = LDAP_PROTOCOL_ERROR;
+		goto done;
+	}
+
+	switch ( authtag ) {
+	case LDAP_AUTH_SIMPLE:
+		break;
+
+	case LDAP_AUTH_SASL:
+		conn->op->orb_mech = mechanism;
+		break;
+	}
+
+	conn->op->orb_cred = cred;
+	sc.sc_response = vc_cb;
+	sc.sc_private = &vc;
+
+	conn->op->o_bd = frontendDB;
+	rs->sr_err = frontendDB->be_bind( conn->op, &rs2 );
+
+	if ( conn->op->o_conn->c_sasl_bind_in_progress ) {
+		rc = vc_create_response( conn, rs2.sr_err, rs2.sr_text,
+			!BER_BVISEMPTY( &vc.sasldata ) ? &vc.sasldata : NULL,
+			NULL,
+			vc.ctrls, &rs->sr_rspdata );
+
+	} else {
+		rc = vc_create_response( NULL, rs2.sr_err, rs2.sr_text,
+			NULL,
+			&conn->op->o_conn->c_dn,
+			vc.ctrls, &rs->sr_rspdata );
+	}
+
+	if ( rc != 0 ) {
+		rs->sr_err = LDAP_OTHER;
+		goto done;
+	}
+
+	if ( !BER_BVISNULL( &conn->op->o_conn->c_dn ) &&
+		conn->op->o_conn->c_dn.bv_val != conn->op->o_conn->c_ndn.bv_val )
+		ber_memfree( conn->op->o_conn->c_dn.bv_val );
+	if ( !BER_BVISNULL( &conn->op->o_conn->c_ndn ) )
+		ber_memfree( conn->op->o_conn->c_ndn.bv_val );
+
+done:;
+	if ( conn ) {
+		if ( conn->op->o_conn->c_sasl_bind_in_progress ) {
+			if ( conn->conn == NULL ) {
+				conn->conn = conn;
+				conn->refcnt--;
+				ldap_pvt_thread_mutex_lock( &vc_mutex );
+				rc = ldap_avl_insert( &vc_tree, (caddr_t)conn,
+					vc_conn_cmp, vc_conn_dup );
+				ldap_pvt_thread_mutex_unlock( &vc_mutex );
+				assert( rc == 0 );
+
+			} else {
+				ldap_pvt_thread_mutex_lock( &vc_mutex );
+				conn->refcnt--;
+				ldap_pvt_thread_mutex_unlock( &vc_mutex );
+			}
+
+		} else {
+			if ( conn->conn != NULL ) {
+				vc_conn_t *tmp;
+
+				ldap_pvt_thread_mutex_lock( &vc_mutex );
+				tmp = ldap_avl_delete( &vc_tree, (caddr_t)conn, vc_conn_cmp );
+				ldap_pvt_thread_mutex_unlock( &vc_mutex );
+			}
+			SLAP_FREE( conn );
+		}
+	}
+
+	if ( vc.ctrls ) {
+		ldap_controls_free( vc.ctrls );
+		vc.ctrls = NULL;
+	}
+
+	if ( !BER_BVISNULL( &ndn ) ) {
+		op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
+		BER_BVZERO( &ndn );
+	}
+
+	op->o_tmpfree( reqdata.bv_val, op->o_tmpmemctx );
+	BER_BVZERO( &reqdata );
+
+        return rs->sr_err;
+}
+
+static int
+vc_initialize( void )
+{
+	int rc;
+
+	rc = load_extop2( (struct berval *)&vc_exop_oid_bv,
+		SLAP_EXOP_HIDE, vc_exop, 0 );
+	if ( rc != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY,
+			"vc_initialize: unable to register VerifyCredentials exop: %d.\n",
+			rc );
+	}
+
+	ldap_pvt_thread_mutex_init( &vc_mutex );
+
+	return rc;
+}
+
+int
+init_module( int argc, char *argv[] )
+{
+	return vc_initialize();
+}
+