Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

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

1 files changed, 2869 insertions, 0 deletions

diff --git a/servers/slapd/aclparse.c b/servers/slapd/aclparse.c
new file mode 100644
index 0000000..abb6ae0
--- /dev/null
+++ b/servers/slapd/aclparse.c
@@ -0,0 +1,2869 @@
+/* aclparse.c - routines to parse and check acl's */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 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>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/regex.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/unistd.h>
+
+#include "slap.h"
+#include "lber_pvt.h"
+#include "lutil.h"
+
+static const char style_base[] = "base";
+const char *style_strings[] = {
+	"regex",
+	"expand",
+	"exact",
+	"one",
+	"subtree",
+	"children",
+	"level",
+	"attrof",
+	"anonymous",
+	"users",
+	"self",
+	"ip",
+	"ipv6",
+	"path",
+	NULL
+};
+
+#define ACLBUF_CHUNKSIZE	8192
+static struct berval aclbuf;
+
+static void		split(char *line, int splitchar, char **left, char **right);
+static void		access_append(Access **l, Access *a);
+static void		access_free( Access *a );
+static int		acl_usage(void);
+
+static void		acl_regex_normalized_dn(const char *src, struct berval *pat);
+
+#ifdef LDAP_DEBUG
+static void		print_acl(Backend *be, AccessControl *a);
+#endif
+
+static int		check_scope( BackendDB *be, AccessControl *a );
+
+#ifdef SLAP_DYNACL
+static int
+slap_dynacl_config(
+	const char *fname,
+	int lineno,
+	Access *b,
+	const char *name,
+	const char *opts,
+	slap_style_t sty,
+	const char *right )
+{
+	slap_dynacl_t	*da, *tmp;
+	int		rc = 0;
+
+	for ( da = b->a_dynacl; da; da = da->da_next ) {
+		if ( strcasecmp( da->da_name, name ) == 0 ) {
+			Debug( LDAP_DEBUG_ANY,
+				"%s: line %d: dynacl \"%s\" already specified.\n",
+				fname, lineno, name );
+			return acl_usage();
+		}
+	}
+
+	da = slap_dynacl_get( name );
+	if ( da == NULL ) {
+		return -1;
+	}
+
+	tmp = ch_malloc( sizeof( slap_dynacl_t ) );
+	*tmp = *da;
+
+	if ( tmp->da_parse ) {
+		rc = ( *tmp->da_parse )( fname, lineno, opts, sty, right, &tmp->da_private );
+		if ( rc ) {
+			ch_free( tmp );
+			return rc;
+		}
+	}
+
+	tmp->da_next = b->a_dynacl;
+	b->a_dynacl = tmp;
+
+	return 0;
+}
+#endif /* SLAP_DYNACL */
+
+static void
+regtest(const char *fname, int lineno, char *pat) {
+	int e;
+	regex_t re;
+
+	char		buf[ SLAP_TEXT_BUFLEN ];
+	unsigned	size;
+
+	char *sp;
+	char *dp;
+	int  flag;
+
+	sp = pat;
+	dp = buf;
+	size = 0;
+	buf[0] = '\0';
+
+	for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
+		if (flag) {
+			if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
+				*dp++ = *sp;
+				size++;
+			}
+			flag = 0;
+
+		} else {
+			if (*sp == '$') {
+				flag = 1;
+			} else {
+				*dp++ = *sp;
+				size++;
+			}
+		}
+	}
+
+	*dp = '\0';
+	if ( size >= (sizeof(buf) - 1) ) {
+		Debug( LDAP_DEBUG_ANY,
+			"%s: line %d: regular expression \"%s\" too large\n",
+			fname, lineno, pat );
+		(void)acl_usage();
+		exit( EXIT_FAILURE );
+	}
+
+	if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
+		char error[ SLAP_TEXT_BUFLEN ];
+
+		regerror(e, &re, error, sizeof(error));
+
+		snprintf( buf, sizeof( buf ),
+			"regular expression \"%s\" bad because of %s",
+			pat, error );
+		Debug( LDAP_DEBUG_ANY,
+			"%s: line %d: %s\n",
+			fname, lineno, buf );
+		acl_usage();
+		exit( EXIT_FAILURE );
+	}
+	regfree(&re);
+}
+
+/*
+ * Experimental
+ *
+ * Check if the pattern of an ACL, if any, matches the scope
+ * of the backend it is defined within.
+ */
+#define	ACL_SCOPE_UNKNOWN	(-2)
+#define	ACL_SCOPE_ERR		(-1)
+#define	ACL_SCOPE_OK		(0)
+#define	ACL_SCOPE_PARTIAL	(1)
+#define	ACL_SCOPE_WARN		(2)
+
+static int
+check_scope( BackendDB *be, AccessControl *a )
+{
+	ber_len_t	patlen;
+	struct berval	dn;
+
+	dn = be->be_nsuffix[0];
+
+	if ( BER_BVISEMPTY( &dn ) ) {
+		return ACL_SCOPE_OK;
+	}
+
+	if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
+			a->acl_dn_style != ACL_STYLE_REGEX )
+	{
+		slap_style_t	style = a->acl_dn_style;
+
+		if ( style == ACL_STYLE_REGEX ) {
+			char		dnbuf[SLAP_LDAPDN_MAXLEN + 2];
+			char		rebuf[SLAP_LDAPDN_MAXLEN + 1];
+			ber_len_t	rebuflen;
+			regex_t		re;
+			int		rc;
+			
+			/* add trailing '$' to database suffix to form
+			 * a simple trial regex pattern "<suffix>$" */
+			AC_MEMCPY( dnbuf, be->be_nsuffix[0].bv_val,
+				be->be_nsuffix[0].bv_len );
+			dnbuf[be->be_nsuffix[0].bv_len] = '$';
+			dnbuf[be->be_nsuffix[0].bv_len + 1] = '\0';
+
+			if ( regcomp( &re, dnbuf, REG_EXTENDED|REG_ICASE ) ) {
+				return ACL_SCOPE_WARN;
+			}
+
+			/* remove trailing ')$', if any, from original
+			 * regex pattern */
+			rebuflen = a->acl_dn_pat.bv_len;
+			AC_MEMCPY( rebuf, a->acl_dn_pat.bv_val, rebuflen + 1 );
+			if ( rebuf[rebuflen - 1] == '$' ) {
+				rebuf[--rebuflen] = '\0';
+			}
+			while ( rebuflen > be->be_nsuffix[0].bv_len && rebuf[rebuflen - 1] == ')' ) {
+				rebuf[--rebuflen] = '\0';
+			}
+			if ( rebuflen == be->be_nsuffix[0].bv_len ) {
+				rc = ACL_SCOPE_WARN;
+				goto regex_done;
+			}
+
+			/* not a clear indication of scoping error, though */
+			rc = regexec( &re, rebuf, 0, NULL, 0 )
+				? ACL_SCOPE_WARN : ACL_SCOPE_OK;
+
+regex_done:;
+			regfree( &re );
+			return rc;
+		}
+
+		patlen = a->acl_dn_pat.bv_len;
+		/* If backend suffix is longer than pattern,
+		 * it is a potential mismatch (in the sense
+		 * that a superior naming context could
+		 * match */
+		if ( dn.bv_len > patlen ) {
+			/* base is blatantly wrong */
+			if ( style == ACL_STYLE_BASE ) return ACL_SCOPE_ERR;
+
+			/* a style of one can be wrong if there is
+			 * more than one level between the suffix
+			 * and the pattern */
+			if ( style == ACL_STYLE_ONE ) {
+				ber_len_t	rdnlen = 0;
+				int		sep = 0;
+
+				if ( patlen > 0 ) {
+					if ( !DN_SEPARATOR( dn.bv_val[dn.bv_len - patlen - 1] )) {
+						return ACL_SCOPE_ERR;
+					}
+					sep = 1;
+				}
+
+				rdnlen = dn_rdnlen( NULL, &dn );
+				if ( rdnlen != dn.bv_len - patlen - sep )
+					return ACL_SCOPE_ERR;
+			}
+
+			/* if the trailing part doesn't match,
+			 * then it's an error */
+			if ( strcmp( a->acl_dn_pat.bv_val,
+				&dn.bv_val[dn.bv_len - patlen] ) != 0 )
+			{
+				return ACL_SCOPE_ERR;
+			}
+
+			return ACL_SCOPE_PARTIAL;
+		}
+
+		switch ( style ) {
+		case ACL_STYLE_BASE:
+		case ACL_STYLE_ONE:
+		case ACL_STYLE_CHILDREN:
+		case ACL_STYLE_SUBTREE:
+			break;
+
+		default:
+			assert( 0 );
+			break;
+		}
+
+		if ( dn.bv_len < patlen &&
+			!DN_SEPARATOR( a->acl_dn_pat.bv_val[patlen - dn.bv_len - 1] ))
+		{
+			return ACL_SCOPE_ERR;
+		}
+
+		if ( strcmp( &a->acl_dn_pat.bv_val[patlen - dn.bv_len], dn.bv_val )
+			!= 0 )
+		{
+			return ACL_SCOPE_ERR;
+		}
+
+		return ACL_SCOPE_OK;
+	}
+
+	return ACL_SCOPE_UNKNOWN;
+}
+
+int
+parse_acl(
+	Backend	*be,
+	const char	*fname,
+	int		lineno,
+	int		argc,
+	char		**argv,
+	int		pos )
+{
+	int		i;
+	char		*left, *right, *style;
+	struct berval	bv;
+	AccessControl	*a = NULL;
+	Access	*b = NULL;
+	int rc;
+	const char *text;
+
+	for ( i = 1; i < argc; i++ ) {
+		/* to clause - select which entries are protected */
+		if ( strcasecmp( argv[i], "to" ) == 0 ) {
+			if ( a != NULL ) {
+				Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+					"only one to clause allowed in access line\n",
+				    fname, lineno, 0 );
+				goto fail;
+			}
+			a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
+			a->acl_attrval_style = ACL_STYLE_NONE;
+			for ( ++i; i < argc; i++ ) {
+				if ( strcasecmp( argv[i], "by" ) == 0 ) {
+					i--;
+					break;
+				}
+
+				if ( strcasecmp( argv[i], "*" ) == 0 ) {
+					if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
+						a->acl_dn_style != ACL_STYLE_REGEX )
+					{
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: dn pattern"
+							" already specified in to clause.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
+					continue;
+				}
+
+				split( argv[i], '=', &left, &right );
+				split( left, '.', &left, &style );
+
+				if ( right == NULL ) {
+					Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+						"missing \"=\" in \"%s\" in to clause\n",
+					    fname, lineno, left );
+					goto fail;
+				}
+
+				if ( strcasecmp( left, "dn" ) == 0 ) {
+					if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
+						a->acl_dn_style != ACL_STYLE_REGEX )
+					{
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: dn pattern"
+							" already specified in to clause.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( style == NULL || *style == '\0' ||
+						strcasecmp( style, "baseObject" ) == 0 ||
+						strcasecmp( style, "base" ) == 0 ||
+						strcasecmp( style, "exact" ) == 0 )
+					{
+						a->acl_dn_style = ACL_STYLE_BASE;
+						ber_str2bv( right, 0, 1, &a->acl_dn_pat );
+
+					} else if ( strcasecmp( style, "oneLevel" ) == 0 ||
+						strcasecmp( style, "one" ) == 0 )
+					{
+						a->acl_dn_style = ACL_STYLE_ONE;
+						ber_str2bv( right, 0, 1, &a->acl_dn_pat );
+
+					} else if ( strcasecmp( style, "subtree" ) == 0 ||
+						strcasecmp( style, "sub" ) == 0 )
+					{
+						if( *right == '\0' ) {
+							ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
+
+						} else {
+							a->acl_dn_style = ACL_STYLE_SUBTREE;
+							ber_str2bv( right, 0, 1, &a->acl_dn_pat );
+						}
+
+					} else if ( strcasecmp( style, "children" ) == 0 ) {
+						a->acl_dn_style = ACL_STYLE_CHILDREN;
+						ber_str2bv( right, 0, 1, &a->acl_dn_pat );
+
+					} else if ( strcasecmp( style, "regex" ) == 0 ) {
+						a->acl_dn_style = ACL_STYLE_REGEX;
+
+						if ( *right == '\0' ) {
+							/* empty regex should match empty DN */
+							a->acl_dn_style = ACL_STYLE_BASE;
+							ber_str2bv( right, 0, 1, &a->acl_dn_pat );
+
+						} else if ( strcmp(right, "*") == 0 
+							|| strcmp(right, ".*") == 0 
+							|| strcmp(right, ".*$") == 0 
+							|| strcmp(right, "^.*") == 0 
+							|| strcmp(right, "^.*$") == 0
+							|| strcmp(right, ".*$$") == 0 
+							|| strcmp(right, "^.*$$") == 0 )
+						{
+							ber_str2bv( "*", STRLENOF("*"), 1, &a->acl_dn_pat );
+
+						} else {
+							acl_regex_normalized_dn( right, &a->acl_dn_pat );
+						}
+
+					} else {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"unknown dn style \"%s\" in to clause\n",
+						    fname, lineno, style );
+						goto fail;
+					}
+
+					continue;
+				}
+
+				if ( strcasecmp( left, "filter" ) == 0 ) {
+					if ( (a->acl_filter = str2filter( right )) == NULL ) {
+						Debug( LDAP_DEBUG_ANY,
+				"%s: line %d: bad filter \"%s\" in to clause\n",
+						    fname, lineno, right );
+						goto fail;
+					}
+
+				} else if ( strcasecmp( left, "attr" ) == 0		/* TOLERATED */
+						|| strcasecmp( left, "attrs" ) == 0 )	/* DOCUMENTED */
+				{
+					if ( strcasecmp( left, "attr" ) == 0 ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: \"attr\" "
+							"is deprecated (and undocumented); "
+							"use \"attrs\" instead.\n",
+							fname, lineno, 0 );
+					}
+
+					a->acl_attrs = str2anlist( a->acl_attrs,
+						right, "," );
+					if ( a->acl_attrs == NULL ) {
+						Debug( LDAP_DEBUG_ANY,
+				"%s: line %d: unknown attr \"%s\" in to clause\n",
+						    fname, lineno, right );
+						goto fail;
+					}
+
+				} else if ( strncasecmp( left, "val", 3 ) == 0 ) {
+					struct berval	bv;
+					char		*mr;
+					
+					if ( !BER_BVISEMPTY( &a->acl_attrval ) ) {
+						Debug( LDAP_DEBUG_ANY,
+				"%s: line %d: attr val already specified in to clause.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+					if ( a->acl_attrs == NULL || !BER_BVISEMPTY( &a->acl_attrs[1].an_name ) )
+					{
+						Debug( LDAP_DEBUG_ANY,
+				"%s: line %d: attr val requires a single attribute.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					ber_str2bv( right, 0, 0, &bv );
+					a->acl_attrval_style = ACL_STYLE_BASE;
+
+					mr = strchr( left, '/' );
+					if ( mr != NULL ) {
+						mr[ 0 ] = '\0';
+						mr++;
+
+						a->acl_attrval_mr = mr_find( mr );
+						if ( a->acl_attrval_mr == NULL ) {
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+								"invalid matching rule \"%s\".\n",
+								fname, lineno, mr );
+							goto fail;
+						}
+
+						if( !mr_usable_with_at( a->acl_attrval_mr, a->acl_attrs[ 0 ].an_desc->ad_type ) )
+						{
+							char	buf[ SLAP_TEXT_BUFLEN ];
+
+							snprintf( buf, sizeof( buf ),
+								"matching rule \"%s\" use "
+								"with attr \"%s\" not appropriate.",
+								mr, a->acl_attrs[ 0 ].an_name.bv_val );
+								
+
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
+								fname, lineno, buf );
+							goto fail;
+						}
+					}
+					
+					if ( style != NULL ) {
+						if ( strcasecmp( style, "regex" ) == 0 ) {
+							int e = regcomp( &a->acl_attrval_re, bv.bv_val,
+								REG_EXTENDED | REG_ICASE );
+							if ( e ) {
+								char	err[SLAP_TEXT_BUFLEN],
+									buf[ SLAP_TEXT_BUFLEN ];
+
+								regerror( e, &a->acl_attrval_re, err, sizeof( err ) );
+
+								snprintf( buf, sizeof( buf ),
+									"regular expression \"%s\" bad because of %s",
+									right, err );
+
+								Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
+									fname, lineno, buf );
+								goto fail;
+							}
+							a->acl_attrval_style = ACL_STYLE_REGEX;
+
+						} else {
+							/* FIXME: if the attribute has DN syntax, we might
+							 * allow one, subtree and children styles as well */
+							if ( !strcasecmp( style, "base" ) ||
+								!strcasecmp( style, "exact" ) ) {
+								a->acl_attrval_style = ACL_STYLE_BASE;
+
+							} else if ( a->acl_attrs[0].an_desc->ad_type->
+								sat_syntax == slap_schema.si_syn_distinguishedName )
+							{
+								if ( !strcasecmp( style, "baseObject" ) ||
+									!strcasecmp( style, "base" ) )
+								{
+									a->acl_attrval_style = ACL_STYLE_BASE;
+								} else if ( !strcasecmp( style, "onelevel" ) ||
+									!strcasecmp( style, "one" ) )
+								{
+									a->acl_attrval_style = ACL_STYLE_ONE;
+								} else if ( !strcasecmp( style, "subtree" ) ||
+									!strcasecmp( style, "sub" ) )
+								{
+									a->acl_attrval_style = ACL_STYLE_SUBTREE;
+								} else if ( !strcasecmp( style, "children" ) ) {
+									a->acl_attrval_style = ACL_STYLE_CHILDREN;
+								} else {
+									char	buf[ SLAP_TEXT_BUFLEN ];
+
+									snprintf( buf, sizeof( buf ),
+										"unknown val.<style> \"%s\" for attributeType \"%s\" "
+											"with DN syntax.",
+										style,
+										a->acl_attrs[0].an_desc->ad_cname.bv_val );
+
+									Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL, 
+										"%s: line %d: %s\n",
+										fname, lineno, buf );
+									goto fail;
+								}
+
+								rc = dnNormalize( 0, NULL, NULL, &bv, &a->acl_attrval, NULL );
+								if ( rc != LDAP_SUCCESS ) {
+									char	buf[ SLAP_TEXT_BUFLEN ];
+
+									snprintf( buf, sizeof( buf ),
+										"unable to normalize DN \"%s\" "
+										"for attributeType \"%s\" (%d).",
+										bv.bv_val,
+										a->acl_attrs[0].an_desc->ad_cname.bv_val,
+										rc );
+									Debug( LDAP_DEBUG_ANY, 
+										"%s: line %d: %s\n",
+										fname, lineno, buf );
+									goto fail;
+								}
+
+							} else {
+								char	buf[ SLAP_TEXT_BUFLEN ];
+
+								snprintf( buf, sizeof( buf ),
+									"unknown val.<style> \"%s\" for attributeType \"%s\".",
+									style, a->acl_attrs[0].an_desc->ad_cname.bv_val );
+								Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL, 
+									"%s: line %d: %s\n",
+									fname, lineno, buf );
+								goto fail;
+							}
+						}
+					}
+
+					/* Check for appropriate matching rule */
+					if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
+						ber_dupbv( &a->acl_attrval, &bv );
+
+					} else if ( BER_BVISNULL( &a->acl_attrval ) ) {
+						int		rc;
+						const char	*text;
+
+						if ( a->acl_attrval_mr == NULL ) {
+							a->acl_attrval_mr = a->acl_attrs[ 0 ].an_desc->ad_type->sat_equality;
+						}
+
+						if ( a->acl_attrval_mr == NULL ) {
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+								"attr \"%s\" does not have an EQUALITY matching rule.\n",
+								fname, lineno, a->acl_attrs[ 0 ].an_name.bv_val );
+							goto fail;
+						}
+
+						rc = asserted_value_validate_normalize(
+							a->acl_attrs[ 0 ].an_desc,
+							a->acl_attrval_mr,
+							SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
+							&bv,
+							&a->acl_attrval,
+							&text,
+							NULL );
+						if ( rc != LDAP_SUCCESS ) {
+							char	buf[ SLAP_TEXT_BUFLEN ];
+
+							snprintf( buf, sizeof( buf ), "%s: line %d: "
+								" attr \"%s\" normalization failed (%d: %s)",
+								fname, lineno,
+								a->acl_attrs[ 0 ].an_name.bv_val, rc, text );
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: %s.\n",
+								fname, lineno, buf );
+							goto fail;
+						}
+					}
+
+				} else {
+					Debug( LDAP_DEBUG_ANY,
+						"%s: line %d: expecting <what> got \"%s\"\n",
+					    fname, lineno, left );
+					goto fail;
+				}
+			}
+
+			if ( !BER_BVISNULL( &a->acl_dn_pat ) && 
+					ber_bvccmp( &a->acl_dn_pat, '*' ) )
+			{
+				free( a->acl_dn_pat.bv_val );
+				BER_BVZERO( &a->acl_dn_pat );
+				a->acl_dn_style = ACL_STYLE_REGEX;
+			}
+			
+			if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
+					a->acl_dn_style != ACL_STYLE_REGEX ) 
+			{
+				if ( a->acl_dn_style != ACL_STYLE_REGEX ) {
+					struct berval bv;
+					rc = dnNormalize( 0, NULL, NULL, &a->acl_dn_pat, &bv, NULL);
+					if ( rc != LDAP_SUCCESS ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: bad DN \"%s\" in to DN clause\n",
+							fname, lineno, a->acl_dn_pat.bv_val );
+						goto fail;
+					}
+					free( a->acl_dn_pat.bv_val );
+					a->acl_dn_pat = bv;
+
+				} else {
+					int e = regcomp( &a->acl_dn_re, a->acl_dn_pat.bv_val,
+						REG_EXTENDED | REG_ICASE );
+					if ( e ) {
+						char	err[ SLAP_TEXT_BUFLEN ],
+							buf[ SLAP_TEXT_BUFLEN ];
+
+						regerror( e, &a->acl_dn_re, err, sizeof( err ) );
+						snprintf( buf, sizeof( buf ),
+							"regular expression \"%s\" bad because of %s",
+							right, err );
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
+							fname, lineno, buf );
+						goto fail;
+					}
+				}
+			}
+
+		/* by clause - select who has what access to entries */
+		} else if ( strcasecmp( argv[i], "by" ) == 0 ) {
+			if ( a == NULL ) {
+				Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+					"to clause required before by clause in access line\n",
+					fname, lineno, 0 );
+				goto fail;
+			}
+
+			/*
+			 * by clause consists of <who> and <access>
+			 */
+
+			if ( ++i == argc ) {
+				Debug( LDAP_DEBUG_ANY,
+					"%s: line %d: premature EOL: expecting <who>\n",
+					fname, lineno, 0 );
+				goto fail;
+			}
+
+			b = (Access *) ch_calloc( 1, sizeof(Access) );
+
+			ACL_INVALIDATE( b->a_access_mask );
+
+			/* get <who> */
+			for ( ; i < argc; i++ ) {
+				slap_style_t	sty = ACL_STYLE_REGEX;
+				char		*style_modifier = NULL;
+				char		*style_level = NULL;
+				int		level = 0;
+				int		expand = 0;
+				slap_dn_access	*bdn = &b->a_dn;
+				int		is_realdn = 0;
+
+				split( argv[i], '=', &left, &right );
+				split( left, '.', &left, &style );
+				if ( style ) {
+					split( style, ',', &style, &style_modifier );
+
+					if ( strncasecmp( style, "level", STRLENOF( "level" ) ) == 0 ) {
+						split( style, '{', &style, &style_level );
+						if ( style_level != NULL ) {
+							char *p = strchr( style_level, '}' );
+							if ( p == NULL ) {
+								Debug( LDAP_DEBUG_ANY,
+									"%s: line %d: premature eol: "
+									"expecting closing '}' in \"level{n}\"\n",
+									fname, lineno, 0 );
+								goto fail;
+							} else if ( p == style_level ) {
+								Debug( LDAP_DEBUG_ANY,
+									"%s: line %d: empty level "
+									"in \"level{n}\"\n",
+									fname, lineno, 0 );
+								goto fail;
+							}
+							p[0] = '\0';
+						}
+					}
+				}
+
+				if ( style == NULL || *style == '\0' ||
+					strcasecmp( style, "exact" ) == 0 ||
+					strcasecmp( style, "baseObject" ) == 0 ||
+					strcasecmp( style, "base" ) == 0 )
+				{
+					sty = ACL_STYLE_BASE;
+
+				} else if ( strcasecmp( style, "onelevel" ) == 0 ||
+					strcasecmp( style, "one" ) == 0 )
+				{
+					sty = ACL_STYLE_ONE;
+
+				} else if ( strcasecmp( style, "subtree" ) == 0 ||
+					strcasecmp( style, "sub" ) == 0 )
+				{
+					sty = ACL_STYLE_SUBTREE;
+
+				} else if ( strcasecmp( style, "children" ) == 0 ) {
+					sty = ACL_STYLE_CHILDREN;
+
+				} else if ( strcasecmp( style, "level" ) == 0 )
+				{
+					if ( lutil_atoi( &level, style_level ) != 0 ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: unable to parse level "
+							"in \"level{n}\"\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					sty = ACL_STYLE_LEVEL;
+
+				} else if ( strcasecmp( style, "regex" ) == 0 ) {
+					sty = ACL_STYLE_REGEX;
+
+				} else if ( strcasecmp( style, "expand" ) == 0 ) {
+					sty = ACL_STYLE_EXPAND;
+
+				} else if ( strcasecmp( style, "ip" ) == 0 ) {
+					sty = ACL_STYLE_IP;
+
+				} else if ( strcasecmp( style, "ipv6" ) == 0 ) {
+#ifndef LDAP_PF_INET6
+					Debug( LDAP_DEBUG_ANY,
+						"%s: line %d: IPv6 not supported\n",
+						fname, lineno, 0 );
+#endif /* ! LDAP_PF_INET6 */
+					sty = ACL_STYLE_IPV6;
+
+				} else if ( strcasecmp( style, "path" ) == 0 ) {
+					sty = ACL_STYLE_PATH;
+#ifndef LDAP_PF_LOCAL
+					Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
+						"%s: line %d: "
+						"\"path\" style modifier is useless without local.\n",
+						fname, lineno, 0 );
+					goto fail;
+#endif /* LDAP_PF_LOCAL */
+
+				} else {
+					Debug( LDAP_DEBUG_ANY,
+						"%s: line %d: unknown style \"%s\" in by clause\n",
+						fname, lineno, style );
+					goto fail;
+				}
+
+				if ( style_modifier &&
+					strcasecmp( style_modifier, "expand" ) == 0 )
+				{
+					switch ( sty ) {
+					case ACL_STYLE_REGEX:
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"\"regex\" style implies \"expand\" modifier.\n",
+							fname, lineno, 0 );
+						goto fail;
+						break;
+
+					case ACL_STYLE_EXPAND:
+						break;
+
+					default:
+						/* we'll see later if it's pertinent */
+						expand = 1;
+						break;
+					}
+				}
+
+				if ( strncasecmp( left, "real", STRLENOF( "real" ) ) == 0 ) {
+					is_realdn = 1;
+					bdn = &b->a_realdn;
+					left += STRLENOF( "real" );
+				}
+
+				if ( strcasecmp( left, "*" ) == 0 ) {
+					if ( is_realdn ) {
+						goto fail;
+					}
+
+					ber_str2bv( "*", STRLENOF( "*" ), 1, &bv );
+					sty = ACL_STYLE_REGEX;
+
+				} else if ( strcasecmp( left, "anonymous" ) == 0 ) {
+					ber_str2bv("anonymous", STRLENOF( "anonymous" ), 1, &bv);
+					sty = ACL_STYLE_ANONYMOUS;
+
+				} else if ( strcasecmp( left, "users" ) == 0 ) {
+					ber_str2bv("users", STRLENOF( "users" ), 1, &bv);
+					sty = ACL_STYLE_USERS;
+
+				} else if ( strcasecmp( left, "self" ) == 0 ) {
+					ber_str2bv("self", STRLENOF( "self" ), 1, &bv);
+					sty = ACL_STYLE_SELF;
+
+				} else if ( strcasecmp( left, "dn" ) == 0 ) {
+					if ( sty == ACL_STYLE_REGEX ) {
+						bdn->a_style = ACL_STYLE_REGEX;
+						if ( right == NULL ) {
+							/* no '=' */
+							ber_str2bv("users",
+								STRLENOF( "users" ),
+								1, &bv);
+							bdn->a_style = ACL_STYLE_USERS;
+
+						} else if (*right == '\0' ) {
+							/* dn="" */
+							ber_str2bv("anonymous",
+								STRLENOF( "anonymous" ),
+								1, &bv);
+							bdn->a_style = ACL_STYLE_ANONYMOUS;
+
+						} else if ( strcmp( right, "*" ) == 0 ) {
+							/* dn=* */
+							/* any or users?  users for now */
+							ber_str2bv("users",
+								STRLENOF( "users" ),
+								1, &bv);
+							bdn->a_style = ACL_STYLE_USERS;
+
+						} else if ( strcmp( right, ".+" ) == 0
+							|| strcmp( right, "^.+" ) == 0
+							|| strcmp( right, ".+$" ) == 0
+							|| strcmp( right, "^.+$" ) == 0
+							|| strcmp( right, ".+$$" ) == 0
+							|| strcmp( right, "^.+$$" ) == 0 )
+						{
+							ber_str2bv("users",
+								STRLENOF( "users" ),
+								1, &bv);
+							bdn->a_style = ACL_STYLE_USERS;
+
+						} else if ( strcmp( right, ".*" ) == 0
+							|| strcmp( right, "^.*" ) == 0
+							|| strcmp( right, ".*$" ) == 0
+							|| strcmp( right, "^.*$" ) == 0
+							|| strcmp( right, ".*$$" ) == 0
+							|| strcmp( right, "^.*$$" ) == 0 )
+						{
+							ber_str2bv("*",
+								STRLENOF( "*" ),
+								1, &bv);
+
+						} else {
+							acl_regex_normalized_dn( right, &bv );
+							if ( !ber_bvccmp( &bv, '*' ) ) {
+								regtest( fname, lineno, bv.bv_val );
+							}
+						}
+
+					} else if ( right == NULL || *right == '\0' ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause\n",
+							fname, lineno, left );
+						goto fail;
+
+					} else {
+						ber_str2bv( right, 0, 1, &bv );
+					}
+
+				} else {
+					BER_BVZERO( &bv );
+				}
+
+				if ( !BER_BVISNULL( &bv ) ) {
+					if ( !BER_BVISEMPTY( &bdn->a_pat ) ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: dn pattern already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( sty != ACL_STYLE_REGEX &&
+							sty != ACL_STYLE_ANONYMOUS &&
+							sty != ACL_STYLE_USERS &&
+							sty != ACL_STYLE_SELF &&
+							expand == 0 )
+					{
+						rc = dnNormalize(0, NULL, NULL,
+							&bv, &bdn->a_pat, NULL);
+						if ( rc != LDAP_SUCCESS ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: bad DN \"%s\" in by DN clause\n",
+								fname, lineno, bv.bv_val );
+							goto fail;
+						}
+						free( bv.bv_val );
+						if ( sty == ACL_STYLE_BASE
+							&& be != NULL
+							&& !BER_BVISNULL( &be->be_rootndn )
+							&& dn_match( &bdn->a_pat, &be->be_rootndn ) )
+						{
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: rootdn is always granted "
+								"unlimited privileges.\n",
+								fname, lineno, 0 );
+						}
+
+					} else {
+						bdn->a_pat = bv;
+					}
+					bdn->a_style = sty;
+					if ( expand ) {
+						char	*exp;
+						int	gotit = 0;
+
+						for ( exp = strchr( bdn->a_pat.bv_val, '$' );
+							exp && (ber_len_t)(exp - bdn->a_pat.bv_val)
+								< bdn->a_pat.bv_len;
+							exp = strchr( exp, '$' ) )
+						{
+							if ( ( isdigit( (unsigned char) exp[ 1 ] ) ||
+								    exp[ 1 ] == '{' ) ) {
+								gotit = 1;
+								break;
+							}
+						}
+
+						if ( gotit == 1 ) {
+							bdn->a_expand = expand;
+
+						} else {
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+								"\"expand\" used with no expansions in \"pattern\".\n",
+								fname, lineno, 0 );
+							goto fail;
+						} 
+					}
+					if ( sty == ACL_STYLE_SELF ) {
+						bdn->a_self_level = level;
+
+					} else {
+						if ( level < 0 ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: bad negative level \"%d\" "
+								"in by DN clause\n",
+								fname, lineno, level );
+							goto fail;
+						} else if ( level == 1 ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: \"onelevel\" should be used "
+								"instead of \"level{1}\" in by DN clause\n",
+								fname, lineno, 0 );
+						} else if ( level == 0 && sty == ACL_STYLE_LEVEL ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: \"base\" should be used "
+								"instead of \"level{0}\" in by DN clause\n",
+								fname, lineno, 0 );
+						}
+
+						bdn->a_level = level;
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "dnattr" ) == 0 ) {
+					if ( right == NULL || right[0] == '\0' ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause\n",
+							fname, lineno, left );
+						goto fail;
+					}
+
+					if( bdn->a_at != NULL ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: dnattr already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					rc = slap_str2ad( right, &bdn->a_at, &text );
+
+					if( rc != LDAP_SUCCESS ) {
+						char	buf[ SLAP_TEXT_BUFLEN ];
+
+						snprintf( buf, sizeof( buf ),
+							"dnattr \"%s\": %s",
+							right, text );
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: %s\n",
+							fname, lineno, buf );
+						goto fail;
+					}
+
+
+					if( !is_at_syntax( bdn->a_at->ad_type,
+						SLAPD_DN_SYNTAX ) &&
+						!is_at_syntax( bdn->a_at->ad_type,
+						SLAPD_NAMEUID_SYNTAX ))
+					{
+						char	buf[ SLAP_TEXT_BUFLEN ];
+
+						snprintf( buf, sizeof( buf ),
+							"dnattr \"%s\": "
+							"inappropriate syntax: %s\n",
+							right,
+							bdn->a_at->ad_type->sat_syntax_oid );
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: %s\n",
+							fname, lineno, buf );
+						goto fail;
+					}
+
+					if( bdn->a_at->ad_type->sat_equality == NULL ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: dnattr \"%s\": "
+							"inappropriate matching (no EQUALITY)\n",
+							fname, lineno, right );
+						goto fail;
+					}
+
+					continue;
+				}
+
+				if ( strncasecmp( left, "group", STRLENOF( "group" ) ) == 0 ) {
+					char *name = NULL;
+					char *value = NULL;
+					char *attr_name = SLAPD_GROUP_ATTR;
+
+					switch ( sty ) {
+					case ACL_STYLE_REGEX:
+						/* legacy, tolerated */
+						Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
+							"%s: line %d: "
+							"deprecated group style \"regex\"; "
+							"use \"expand\" instead.\n",
+							fname, lineno, 0 );
+						sty = ACL_STYLE_EXPAND;
+						break;
+
+					case ACL_STYLE_BASE:
+						/* legal, traditional */
+					case ACL_STYLE_EXPAND:
+						/* legal, substring expansion; supersedes regex */
+						break;
+
+					default:
+						/* unknown */
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+							fname, lineno, style );
+						goto fail;
+					}
+
+					if ( right == NULL || right[0] == '\0' ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause.\n",
+							fname, lineno, left );
+						goto fail;
+					}
+
+					if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: group pattern already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					/* format of string is
+						"group/objectClassValue/groupAttrName" */
+					if ( ( value = strchr(left, '/') ) != NULL ) {
+						*value++ = '\0';
+						if ( *value && ( name = strchr( value, '/' ) ) != NULL ) {
+							*name++ = '\0';
+						}
+					}
+
+					b->a_group_style = sty;
+					if ( sty == ACL_STYLE_EXPAND ) {
+						acl_regex_normalized_dn( right, &bv );
+						if ( !ber_bvccmp( &bv, '*' ) ) {
+							regtest( fname, lineno, bv.bv_val );
+						}
+						b->a_group_pat = bv;
+
+					} else {
+						ber_str2bv( right, 0, 0, &bv );
+						rc = dnNormalize( 0, NULL, NULL, &bv,
+							&b->a_group_pat, NULL );
+						if ( rc != LDAP_SUCCESS ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: bad DN \"%s\".\n",
+								fname, lineno, right );
+							goto fail;
+						}
+					}
+
+					if ( value && *value ) {
+						b->a_group_oc = oc_find( value );
+						*--value = '/';
+
+						if ( b->a_group_oc == NULL ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: group objectclass "
+								"\"%s\" unknown.\n",
+								fname, lineno, value );
+							goto fail;
+						}
+
+					} else {
+						b->a_group_oc = oc_find( SLAPD_GROUP_CLASS );
+
+						if( b->a_group_oc == NULL ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: group default objectclass "
+								"\"%s\" unknown.\n",
+								fname, lineno, SLAPD_GROUP_CLASS );
+							goto fail;
+						}
+					}
+
+					if ( is_object_subclass( slap_schema.si_oc_referral,
+						b->a_group_oc ) )
+					{
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: group objectclass \"%s\" "
+							"is subclass of referral.\n",
+							fname, lineno, value );
+						goto fail;
+					}
+
+					if ( is_object_subclass( slap_schema.si_oc_alias,
+						b->a_group_oc ) )
+					{
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: group objectclass \"%s\" "
+							"is subclass of alias.\n",
+							fname, lineno, value );
+						goto fail;
+					}
+
+					if ( name && *name ) {
+						attr_name = name;
+						*--name = '/';
+
+					}
+
+					rc = slap_str2ad( attr_name, &b->a_group_at, &text );
+					if ( rc != LDAP_SUCCESS ) {
+						char	buf[ SLAP_TEXT_BUFLEN ];
+
+						snprintf( buf, sizeof( buf ),
+							"group \"%s\": %s.",
+							right, text );
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: %s\n",
+							fname, lineno, buf );
+						goto fail;
+					}
+
+					if ( !is_at_syntax( b->a_group_at->ad_type,
+							SLAPD_DN_SYNTAX ) /* e.g. "member" */
+						&& !is_at_syntax( b->a_group_at->ad_type,
+							SLAPD_NAMEUID_SYNTAX ) /* e.g. memberUID */
+						&& !is_at_subtype( b->a_group_at->ad_type,
+							slap_schema.si_ad_labeledURI->ad_type ) /* e.g. memberURL */ )
+					{
+						char	buf[ SLAP_TEXT_BUFLEN ];
+
+						snprintf( buf, sizeof( buf ),
+							"group \"%s\" attr \"%s\": inappropriate syntax: %s; "
+							"must be " SLAPD_DN_SYNTAX " (DN), "
+							SLAPD_NAMEUID_SYNTAX " (NameUID) "
+							"or a subtype of labeledURI.",
+							right,
+							attr_name,
+							at_syntax( b->a_group_at->ad_type ) );
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: %s\n",
+							fname, lineno, buf );
+						goto fail;
+					}
+
+
+					{
+						int rc;
+						ObjectClass *ocs[2];
+
+						ocs[0] = b->a_group_oc;
+						ocs[1] = NULL;
+
+						rc = oc_check_allowed( b->a_group_at->ad_type,
+							ocs, NULL );
+
+						if( rc != 0 ) {
+							char	buf[ SLAP_TEXT_BUFLEN ];
+
+							snprintf( buf, sizeof( buf ),
+								"group: \"%s\" not allowed by \"%s\".",
+								b->a_group_at->ad_cname.bv_val,
+								b->a_group_oc->soc_oid );
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
+								fname, lineno, buf );
+							goto fail;
+						}
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "peername" ) == 0 ) {
+					switch ( sty ) {
+					case ACL_STYLE_REGEX:
+					case ACL_STYLE_BASE:
+						/* legal, traditional */
+					case ACL_STYLE_EXPAND:
+						/* cheap replacement to regex for simple expansion */
+					case ACL_STYLE_IP:
+					case ACL_STYLE_IPV6:
+					case ACL_STYLE_PATH:
+						/* legal, peername specific */
+						break;
+
+					default:
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+						    fname, lineno, style );
+						goto fail;
+					}
+
+					if ( right == NULL || right[0] == '\0' ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause.\n",
+							fname, lineno, left );
+						goto fail;
+					}
+
+					if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"peername pattern already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					b->a_peername_style = sty;
+					if ( sty == ACL_STYLE_REGEX ) {
+						acl_regex_normalized_dn( right, &bv );
+						if ( !ber_bvccmp( &bv, '*' ) ) {
+							regtest( fname, lineno, bv.bv_val );
+						}
+						b->a_peername_pat = bv;
+
+					} else {
+						ber_str2bv( right, 0, 1, &b->a_peername_pat );
+
+						if ( sty == ACL_STYLE_IP ) {
+							char		*addr = NULL,
+									*mask = NULL,
+									*port = NULL;
+
+							split( right, '{', &addr, &port );
+							split( addr, '%', &addr, &mask );
+
+							b->a_peername_addr = inet_addr( addr );
+							if ( b->a_peername_addr == (unsigned long)(-1) ) {
+								/* illegal address */
+								Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+									"illegal peername address \"%s\".\n",
+									fname, lineno, addr );
+								goto fail;
+							}
+
+							b->a_peername_mask = (unsigned long)(-1);
+							if ( mask != NULL ) {
+								b->a_peername_mask = inet_addr( mask );
+								if ( b->a_peername_mask ==
+									(unsigned long)(-1) )
+								{
+									/* illegal mask */
+									Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+										"illegal peername address mask "
+										"\"%s\".\n",
+										fname, lineno, mask );
+									goto fail;
+								}
+							} 
+
+							b->a_peername_port = -1;
+							if ( port ) {
+								char	*end = NULL;
+
+								b->a_peername_port = strtol( port, &end, 10 );
+								if ( end == port || end[0] != '}' ) {
+									/* illegal port */
+									Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+										"illegal peername port specification "
+										"\"{%s}\".\n",
+										fname, lineno, port );
+									goto fail;
+								}
+							}
+
+#ifdef LDAP_PF_INET6
+						} else if ( sty == ACL_STYLE_IPV6 ) {
+							char		*addr = NULL,
+									*mask = NULL,
+									*port = NULL;
+
+							split( right, '{', &addr, &port );
+							split( addr, '%', &addr, &mask );
+
+							if ( inet_pton( AF_INET6, addr, &b->a_peername_addr6 ) != 1 ) {
+								/* illegal address */
+								Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+									"illegal peername address \"%s\".\n",
+									fname, lineno, addr );
+								goto fail;
+							}
+
+							if ( mask == NULL ) {
+								mask = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF";
+							}
+
+							if ( inet_pton( AF_INET6, mask, &b->a_peername_mask6 ) != 1 ) {
+								/* illegal mask */
+								Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+									"illegal peername address mask "
+									"\"%s\".\n",
+									fname, lineno, mask );
+								goto fail;
+							}
+
+							b->a_peername_port = -1;
+							if ( port ) {
+								char	*end = NULL;
+
+								b->a_peername_port = strtol( port, &end, 10 );
+								if ( end == port || end[0] != '}' ) {
+									/* illegal port */
+									Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+										"illegal peername port specification "
+										"\"{%s}\".\n",
+										fname, lineno, port );
+									goto fail;
+								}
+							}
+#endif /* LDAP_PF_INET6 */
+						}
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "sockname" ) == 0 ) {
+					switch ( sty ) {
+					case ACL_STYLE_REGEX:
+					case ACL_STYLE_BASE:
+						/* legal, traditional */
+					case ACL_STYLE_EXPAND:
+						/* cheap replacement to regex for simple expansion */
+						break;
+
+					default:
+						/* unknown */
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause\n",
+						    fname, lineno, style );
+						goto fail;
+					}
+
+					if ( right == NULL || right[0] == '\0' ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause\n",
+							fname, lineno, left );
+						goto fail;
+					}
+
+					if ( !BER_BVISNULL( &b->a_sockname_pat ) ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"sockname pattern already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					b->a_sockname_style = sty;
+					if ( sty == ACL_STYLE_REGEX ) {
+						acl_regex_normalized_dn( right, &bv );
+						if ( !ber_bvccmp( &bv, '*' ) ) {
+							regtest( fname, lineno, bv.bv_val );
+						}
+						b->a_sockname_pat = bv;
+						
+					} else {
+						ber_str2bv( right, 0, 1, &b->a_sockname_pat );
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "domain" ) == 0 ) {
+					switch ( sty ) {
+					case ACL_STYLE_REGEX:
+					case ACL_STYLE_BASE:
+					case ACL_STYLE_SUBTREE:
+						/* legal, traditional */
+						break;
+
+					case ACL_STYLE_EXPAND:
+						/* tolerated: means exact,expand */
+						if ( expand ) {
+							Debug( LDAP_DEBUG_ANY,
+								"%s: line %d: "
+								"\"expand\" modifier "
+								"with \"expand\" style.\n",
+								fname, lineno, 0 );
+						}
+						sty = ACL_STYLE_BASE;
+						expand = 1;
+						break;
+
+					default:
+						/* unknown */
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+						    fname, lineno, style );
+						goto fail;
+					}
+
+					if ( right == NULL || right[0] == '\0' ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause.\n",
+							fname, lineno, left );
+						goto fail;
+					}
+
+					if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: domain pattern already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					b->a_domain_style = sty;
+					b->a_domain_expand = expand;
+					if ( sty == ACL_STYLE_REGEX ) {
+						acl_regex_normalized_dn( right, &bv );
+						if ( !ber_bvccmp( &bv, '*' ) ) {
+							regtest( fname, lineno, bv.bv_val );
+						}
+						b->a_domain_pat = bv;
+
+					} else {
+						ber_str2bv( right, 0, 1, &b->a_domain_pat );
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "sockurl" ) == 0 ) {
+					switch ( sty ) {
+					case ACL_STYLE_REGEX:
+					case ACL_STYLE_BASE:
+						/* legal, traditional */
+					case ACL_STYLE_EXPAND:
+						/* cheap replacement to regex for simple expansion */
+						break;
+
+					default:
+						/* unknown */
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+						    fname, lineno, style );
+						goto fail;
+					}
+
+					if ( right == NULL || right[0] == '\0' ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"missing \"=\" in (or value after) \"%s\" "
+							"in by clause.\n",
+							fname, lineno, left );
+						goto fail;
+					}
+
+					if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: sockurl pattern already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					b->a_sockurl_style = sty;
+					if ( sty == ACL_STYLE_REGEX ) {
+						acl_regex_normalized_dn( right, &bv );
+						if ( !ber_bvccmp( &bv, '*' ) ) {
+							regtest( fname, lineno, bv.bv_val );
+						}
+						b->a_sockurl_pat = bv;
+						
+					} else {
+						ber_str2bv( right, 0, 1, &b->a_sockurl_pat );
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "set" ) == 0 ) {
+					switch ( sty ) {
+						/* deprecated */
+					case ACL_STYLE_REGEX:
+						Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
+							"%s: line %d: "
+							"deprecated set style "
+							"\"regex\" in <by> clause; "
+							"use \"expand\" instead.\n",
+							fname, lineno, 0 );
+						sty = ACL_STYLE_EXPAND;
+						/* FALLTHRU */
+						
+					case ACL_STYLE_BASE:
+					case ACL_STYLE_EXPAND:
+						break;
+
+					default:
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+							fname, lineno, style );
+						goto fail;
+					}
+
+					if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: set attribute already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( right == NULL || *right == '\0' ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: no set is defined.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					b->a_set_style = sty;
+					ber_str2bv( right, 0, 1, &b->a_set_pat );
+
+					continue;
+				}
+
+#ifdef SLAP_DYNACL
+				{
+					char		*name = NULL,
+							*opts = NULL;
+
+#if 1 /* tolerate legacy "aci" <who> */
+					if ( strcasecmp( left, "aci" ) == 0 ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"undocumented deprecated \"aci\" directive "
+							"is superseded by \"dynacl/aci\".\n",
+							fname, lineno, 0 );
+						name = "aci";
+						
+					} else
+#endif /* tolerate legacy "aci" <who> */
+					if ( strncasecmp( left, "dynacl/", STRLENOF( "dynacl/" ) ) == 0 ) {
+						name = &left[ STRLENOF( "dynacl/" ) ];
+						opts = strchr( name, '/' );
+						if ( opts ) {
+							opts[ 0 ] = '\0';
+							opts++;
+						}
+					}
+
+					if ( name ) {
+						if ( slap_dynacl_config( fname, lineno, b, name, opts, sty, right ) ) {
+							Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+								"unable to configure dynacl \"%s\".\n",
+								fname, lineno, name );
+							goto fail;
+						}
+
+						continue;
+					}
+				}
+#endif /* SLAP_DYNACL */
+
+				if ( strcasecmp( left, "ssf" ) == 0 ) {
+					if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+						    fname, lineno, style );
+						goto fail;
+					}
+
+					if ( b->a_authz.sai_ssf ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: ssf attribute already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( right == NULL || *right == '\0' ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: no ssf is defined.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( lutil_atou( &b->a_authz.sai_ssf, right ) != 0 ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: unable to parse ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+
+					if ( !b->a_authz.sai_ssf ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: invalid ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "transport_ssf" ) == 0 ) {
+					if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+							fname, lineno, style );
+						goto fail;
+					}
+
+					if ( b->a_authz.sai_transport_ssf ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"transport_ssf attribute already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( right == NULL || *right == '\0' ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: no transport_ssf is defined.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( lutil_atou( &b->a_authz.sai_transport_ssf, right ) != 0 ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"unable to parse transport_ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+
+					if ( !b->a_authz.sai_transport_ssf ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: invalid transport_ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "tls_ssf" ) == 0 ) {
+					if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+							fname, lineno, style );
+						goto fail;
+					}
+
+					if ( b->a_authz.sai_tls_ssf ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"tls_ssf attribute already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( right == NULL || *right == '\0' ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: no tls_ssf is defined\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( lutil_atou( &b->a_authz.sai_tls_ssf, right ) != 0 ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"unable to parse tls_ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+
+					if ( !b->a_authz.sai_tls_ssf ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: invalid tls_ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+					continue;
+				}
+
+				if ( strcasecmp( left, "sasl_ssf" ) == 0 ) {
+					if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"inappropriate style \"%s\" in by clause.\n",
+							fname, lineno, style );
+						goto fail;
+					}
+
+					if ( b->a_authz.sai_sasl_ssf ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"sasl_ssf attribute already specified.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( right == NULL || *right == '\0' ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: no sasl_ssf is defined.\n",
+							fname, lineno, 0 );
+						goto fail;
+					}
+
+					if ( lutil_atou( &b->a_authz.sai_sasl_ssf, right ) != 0 ) {
+						Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+							"unable to parse sasl_ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+
+					if ( !b->a_authz.sai_sasl_ssf ) {
+						Debug( LDAP_DEBUG_ANY,
+							"%s: line %d: invalid sasl_ssf value (%s).\n",
+							fname, lineno, right );
+						goto fail;
+					}
+					continue;
+				}
+
+				if ( right != NULL ) {
+					/* unsplit */
+					right[-1] = '=';
+				}
+				break;
+			}
+
+			if ( i == argc || ( strcasecmp( left, "stop" ) == 0 ) ) { 
+				/* out of arguments or plain stop */
+
+				ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
+				ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
+				b->a_type = ACL_STOP;
+
+				access_append( &a->acl_access, b );
+				continue;
+			}
+
+			if ( strcasecmp( left, "continue" ) == 0 ) {
+				/* plain continue */
+
+				ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
+				ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
+				b->a_type = ACL_CONTINUE;
+
+				access_append( &a->acl_access, b );
+				continue;
+			}
+
+			if ( strcasecmp( left, "break" ) == 0 ) {
+				/* plain continue */
+
+				ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
+				ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
+				b->a_type = ACL_BREAK;
+
+				access_append( &a->acl_access, b );
+				continue;
+			}
+
+			if ( strcasecmp( left, "by" ) == 0 ) {
+				/* we've gone too far */
+				--i;
+				ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
+				ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
+				b->a_type = ACL_STOP;
+
+				access_append( &a->acl_access, b );
+				continue;
+			}
+
+			/* get <access> */
+			{
+				char	*lleft = left;
+
+				if ( strncasecmp( left, "self", STRLENOF( "self" ) ) == 0 ) {
+					b->a_dn_self = 1;
+					lleft = &left[ STRLENOF( "self" ) ];
+
+				} else if ( strncasecmp( left, "realself", STRLENOF( "realself" ) ) == 0 ) {
+					b->a_realdn_self = 1;
+					lleft = &left[ STRLENOF( "realself" ) ];
+				}
+
+				ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( lleft ) );
+			}
+
+			if ( ACL_IS_INVALID( b->a_access_mask ) ) {
+				Debug( LDAP_DEBUG_ANY,
+					"%s: line %d: expecting <access> got \"%s\".\n",
+					fname, lineno, left );
+				goto fail;
+			}
+
+			b->a_type = ACL_STOP;
+
+			if ( ++i == argc ) {
+				/* out of arguments or plain stop */
+				access_append( &a->acl_access, b );
+				continue;
+			}
+
+			if ( strcasecmp( argv[i], "continue" ) == 0 ) {
+				/* plain continue */
+				b->a_type = ACL_CONTINUE;
+
+			} else if ( strcasecmp( argv[i], "break" ) == 0 ) {
+				/* plain continue */
+				b->a_type = ACL_BREAK;
+
+			} else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
+				/* gone to far */
+				i--;
+			}
+
+			access_append( &a->acl_access, b );
+			b = NULL;
+
+		} else {
+			Debug( LDAP_DEBUG_ANY,
+				"%s: line %d: expecting \"to\" "
+				"or \"by\" got \"%s\"\n",
+				fname, lineno, argv[i] );
+			goto fail;
+		}
+	}
+
+	/* if we have no real access clause, complain and do nothing */
+	if ( a == NULL ) {
+		Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+			"warning: no access clause(s) specified in access line.\n",
+			fname, lineno, 0 );
+		goto fail;
+
+	} else {
+#ifdef LDAP_DEBUG
+		if ( slap_debug & LDAP_DEBUG_ACL ) {
+			print_acl( be, a );
+		}
+#endif
+	
+		if ( a->acl_access == NULL ) {
+			Debug( LDAP_DEBUG_ANY, "%s: line %d: "
+				"warning: no by clause(s) specified in access line.\n",
+				fname, lineno, 0 );
+			goto fail;
+		}
+
+		if ( be != NULL ) {
+			if ( be->be_nsuffix == NULL ) {
+				Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
+					"scope checking needs suffix before ACLs.\n",
+					fname, lineno, 0 );
+				/* go ahead, since checking is not authoritative */
+			} else if ( !BER_BVISNULL( &be->be_nsuffix[ 1 ] ) ) {
+				Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
+					"scope checking only applies to single-valued "
+					"suffix databases\n",
+					fname, lineno, 0 );
+				/* go ahead, since checking is not authoritative */
+			} else {
+				switch ( check_scope( be, a ) ) {
+				case ACL_SCOPE_UNKNOWN:
+					Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
+						"cannot assess the validity of the ACL scope within "
+						"backend naming context\n",
+						fname, lineno, 0 );
+					break;
+
+				case ACL_SCOPE_WARN:
+					Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
+						"ACL could be out of scope within backend naming context\n",
+						fname, lineno, 0 );
+					break;
+
+				case ACL_SCOPE_PARTIAL:
+					Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
+						"ACL appears to be partially out of scope within "
+						"backend naming context\n",
+						fname, lineno, 0 );
+					break;
+	
+				case ACL_SCOPE_ERR:
+					Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
+						"ACL appears to be out of scope within "
+						"backend naming context\n",
+						fname, lineno, 0 );
+					break;
+
+				default:
+					break;
+				}
+			}
+			acl_append( &be->be_acl, a, pos );
+
+		} else {
+			acl_append( &frontendDB->be_acl, a, pos );
+		}
+	}
+
+	return 0;
+
+fail:
+	if ( b ) access_free( b );
+	if ( a ) acl_free( a );
+	return acl_usage();
+}
+
+char *
+accessmask2str( slap_mask_t mask, char *buf, int debug )
+{
+	int	none = 1;
+	char	*ptr = buf;
+
+	assert( buf != NULL );
+
+	if ( ACL_IS_INVALID( mask ) ) {
+		return "invalid";
+	}
+
+	buf[0] = '\0';
+
+	if ( ACL_IS_LEVEL( mask ) ) {
+		if ( ACL_LVL_IS_NONE(mask) ) {
+			ptr = lutil_strcopy( ptr, "none" );
+
+		} else if ( ACL_LVL_IS_DISCLOSE(mask) ) {
+			ptr = lutil_strcopy( ptr, "disclose" );
+
+		} else if ( ACL_LVL_IS_AUTH(mask) ) {
+			ptr = lutil_strcopy( ptr, "auth" );
+
+		} else if ( ACL_LVL_IS_COMPARE(mask) ) {
+			ptr = lutil_strcopy( ptr, "compare" );
+
+		} else if ( ACL_LVL_IS_SEARCH(mask) ) {
+			ptr = lutil_strcopy( ptr, "search" );
+
+		} else if ( ACL_LVL_IS_READ(mask) ) {
+			ptr = lutil_strcopy( ptr, "read" );
+
+		} else if ( ACL_LVL_IS_WRITE(mask) ) {
+			ptr = lutil_strcopy( ptr, "write" );
+
+		} else if ( ACL_LVL_IS_WADD(mask) ) {
+			ptr = lutil_strcopy( ptr, "add" );
+
+		} else if ( ACL_LVL_IS_WDEL(mask) ) {
+			ptr = lutil_strcopy( ptr, "delete" );
+
+		} else if ( ACL_LVL_IS_MANAGE(mask) ) {
+			ptr = lutil_strcopy( ptr, "manage" );
+
+		} else {
+			ptr = lutil_strcopy( ptr, "unknown" );
+		}
+		
+		if ( !debug ) {
+			*ptr = '\0';
+			return buf;
+		}
+		*ptr++ = '(';
+	}
+
+	if( ACL_IS_ADDITIVE( mask ) ) {
+		*ptr++ = '+';
+
+	} else if( ACL_IS_SUBTRACTIVE( mask ) ) {
+		*ptr++ = '-';
+
+	} else {
+		*ptr++ = '=';
+	}
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_MANAGE) ) {
+		none = 0;
+		*ptr++ = 'm';
+	} 
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
+		none = 0;
+		*ptr++ = 'w';
+
+	} else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WADD) ) {
+		none = 0;
+		*ptr++ = 'a';
+
+	} else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WDEL) ) {
+		none = 0;
+		*ptr++ = 'z';
+	} 
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
+		none = 0;
+		*ptr++ = 'r';
+	} 
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
+		none = 0;
+		*ptr++ = 's';
+	} 
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
+		none = 0;
+		*ptr++ = 'c';
+	} 
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
+		none = 0;
+		*ptr++ = 'x';
+	} 
+
+	if ( ACL_PRIV_ISSET(mask, ACL_PRIV_DISCLOSE) ) {
+		none = 0;
+		*ptr++ = 'd';
+	} 
+
+	if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
+		none = 0;
+		*ptr++ = '0';
+	} 
+
+	if ( none ) {
+		ptr = buf;
+	}
+
+	if ( ACL_IS_LEVEL( mask ) ) {
+		*ptr++ = ')';
+	}
+
+	*ptr = '\0';
+
+	return buf;
+}
+
+slap_mask_t
+str2accessmask( const char *str )
+{
+	slap_mask_t	mask;
+
+	if( !ASCII_ALPHA(str[0]) ) {
+		int i;
+
+		if ( str[0] == '=' ) {
+			ACL_INIT(mask);
+
+		} else if( str[0] == '+' ) {
+			ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
+
+		} else if( str[0] == '-' ) {
+			ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
+
+		} else {
+			ACL_INVALIDATE(mask);
+			return mask;
+		}
+
+		for( i=1; str[i] != '\0'; i++ ) {
+			if( TOLOWER((unsigned char) str[i]) == 'm' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_MANAGE);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'w' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'a' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_WADD);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'z' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_WDEL);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'r' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_READ);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 's' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'c' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'x' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
+
+			} else if( TOLOWER((unsigned char) str[i]) == 'd' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_DISCLOSE);
+
+			} else if( str[i] == '0' ) {
+				ACL_PRIV_SET(mask, ACL_PRIV_NONE);
+
+			} else {
+				ACL_INVALIDATE(mask);
+				return mask;
+			}
+		}
+
+		return mask;
+	}
+
+	if ( strcasecmp( str, "none" ) == 0 ) {
+		ACL_LVL_ASSIGN_NONE(mask);
+
+	} else if ( strcasecmp( str, "disclose" ) == 0 ) {
+		ACL_LVL_ASSIGN_DISCLOSE(mask);
+
+	} else if ( strcasecmp( str, "auth" ) == 0 ) {
+		ACL_LVL_ASSIGN_AUTH(mask);
+
+	} else if ( strcasecmp( str, "compare" ) == 0 ) {
+		ACL_LVL_ASSIGN_COMPARE(mask);
+
+	} else if ( strcasecmp( str, "search" ) == 0 ) {
+		ACL_LVL_ASSIGN_SEARCH(mask);
+
+	} else if ( strcasecmp( str, "read" ) == 0 ) {
+		ACL_LVL_ASSIGN_READ(mask);
+
+	} else if ( strcasecmp( str, "add" ) == 0 ) {
+		ACL_LVL_ASSIGN_WADD(mask);
+
+	} else if ( strcasecmp( str, "delete" ) == 0 ) {
+		ACL_LVL_ASSIGN_WDEL(mask);
+
+	} else if ( strcasecmp( str, "write" ) == 0 ) {
+		ACL_LVL_ASSIGN_WRITE(mask);
+
+	} else if ( strcasecmp( str, "manage" ) == 0 ) {
+		ACL_LVL_ASSIGN_MANAGE(mask);
+
+	} else {
+		ACL_INVALIDATE( mask );
+	}
+
+	return mask;
+}
+
+static int
+acl_usage( void )
+{
+	char *access =
+		"<access clause> ::= access to <what> "
+				"[ by <who> [ <access> ] [ <control> ] ]+ \n";
+	char *what =
+		"<what> ::= * | dn[.<dnstyle>=<DN>] [filter=<filter>] [attrs=<attrspec>]\n"
+		"<attrspec> ::= <attrname> [val[/<matchingRule>][.<attrstyle>]=<value>] | <attrlist>\n"
+		"<attrlist> ::= <attr> [ , <attrlist> ]\n"
+		"<attr> ::= <attrname> | @<objectClass> | !<objectClass> | entry | children\n";
+
+	char *who =
+		"<who> ::= [ * | anonymous | users | self | dn[.<dnstyle>]=<DN> ]\n"
+			"\t[ realanonymous | realusers | realself | realdn[.<dnstyle>]=<DN> ]\n"
+			"\t[dnattr=<attrname>]\n"
+			"\t[realdnattr=<attrname>]\n"
+			"\t[group[/<objectclass>[/<attrname>]][.<style>]=<group>]\n"
+			"\t[peername[.<peernamestyle>]=<peer>] [sockname[.<style>]=<name>]\n"
+			"\t[domain[.<domainstyle>]=<domain>] [sockurl[.<style>]=<url>]\n"
+#ifdef SLAP_DYNACL
+			"\t[dynacl/<name>[/<options>][.<dynstyle>][=<pattern>]]\n"
+#endif /* SLAP_DYNACL */
+			"\t[ssf=<n>] [transport_ssf=<n>] [tls_ssf=<n>] [sasl_ssf=<n>]\n"
+		"<style> ::= exact | regex | base(Object)\n"
+		"<dnstyle> ::= base(Object) | one(level) | sub(tree) | children | "
+			"exact | regex\n"
+		"<attrstyle> ::= exact | regex | base(Object) | one(level) | "
+			"sub(tree) | children\n"
+		"<peernamestyle> ::= exact | regex | ip | ipv6 | path\n"
+		"<domainstyle> ::= exact | regex | base(Object) | sub(tree)\n"
+		"<access> ::= [[real]self]{<level>|<priv>}\n"
+		"<level> ::= none|disclose|auth|compare|search|read|{write|add|delete}|manage\n"
+		"<priv> ::= {=|+|-}{0|d|x|c|s|r|{w|a|z}|m}+\n"
+		"<control> ::= [ stop | continue | break ]\n"
+#ifdef SLAP_DYNACL
+#ifdef SLAPD_ACI_ENABLED
+		"dynacl:\n"
+		"\t<name>=ACI\t<pattern>=<attrname>\n"
+#endif /* SLAPD_ACI_ENABLED */
+#endif /* ! SLAP_DYNACL */
+		"";
+
+	Debug( LDAP_DEBUG_ANY, "%s%s%s\n", access, what, who );
+
+	return 1;
+}
+
+/*
+ * Set pattern to a "normalized" DN from src.
+ * At present it simply eats the (optional) space after 
+ * a RDN separator (,)
+ * Eventually will evolve in a more complete normalization
+ */
+static void
+acl_regex_normalized_dn(
+	const char *src,
+	struct berval *pattern )
+{
+	char *str, *p;
+	ber_len_t len;
+
+	str = ch_strdup( src );
+	len = strlen( src );
+
+	for ( p = str; p && p[0]; p++ ) {
+		/* escape */
+		if ( p[0] == '\\' && p[1] ) {
+			/* 
+			 * if escaping a hex pair we should
+			 * increment p twice; however, in that 
+			 * case the second hex number does 
+			 * no harm
+			 */
+			p++;
+		}
+
+		if ( p[0] == ',' && p[1] == ' ' ) {
+			char *q;
+			
+			/*
+			 * too much space should be an error if we are pedantic
+			 */
+			for ( q = &p[2]; q[0] == ' '; q++ ) {
+				/* DO NOTHING */ ;
+			}
+			AC_MEMCPY( p+1, q, len-(q-str)+1);
+		}
+	}
+	pattern->bv_val = str;
+	pattern->bv_len = p - str;
+
+	return;
+}
+
+static void
+split(
+    char	*line,
+    int		splitchar,
+    char	**left,
+    char	**right )
+{
+	*left = line;
+	if ( (*right = strchr( line, splitchar )) != NULL ) {
+		*((*right)++) = '\0';
+	}
+}
+
+static void
+access_append( Access **l, Access *a )
+{
+	for ( ; *l != NULL; l = &(*l)->a_next ) {
+		;	/* Empty */
+	}
+
+	*l = a;
+}
+
+void
+acl_append( AccessControl **l, AccessControl *a, int pos )
+{
+	int i;
+
+	for (i=0 ; i != pos && *l != NULL; l = &(*l)->acl_next, i++ ) {
+		;	/* Empty */
+	}
+	if ( *l && a )
+		a->acl_next = *l;
+	*l = a;
+}
+
+static void
+access_free( Access *a )
+{
+	if ( !BER_BVISNULL( &a->a_dn_pat ) ) {
+		free( a->a_dn_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_realdn_pat ) ) {
+		free( a->a_realdn_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_peername_pat ) ) {
+		free( a->a_peername_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_sockname_pat ) ) {
+		free( a->a_sockname_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_domain_pat ) ) {
+		free( a->a_domain_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_sockurl_pat ) ) {
+		free( a->a_sockurl_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_set_pat ) ) {
+		free( a->a_set_pat.bv_val );
+	}
+	if ( !BER_BVISNULL( &a->a_group_pat ) ) {
+		free( a->a_group_pat.bv_val );
+	}
+#ifdef SLAP_DYNACL
+	if ( a->a_dynacl != NULL ) {
+		slap_dynacl_t	*da;
+		for ( da = a->a_dynacl; da; ) {
+			slap_dynacl_t	*tmp = da;
+
+			da = da->da_next;
+
+			if ( tmp->da_destroy ) {
+				tmp->da_destroy( tmp->da_private );
+			}
+
+			ch_free( tmp );
+		}
+	}
+#endif /* SLAP_DYNACL */
+	free( a );
+}
+
+void
+acl_free( AccessControl *a )
+{
+	Access *n;
+	AttributeName *an;
+
+	if ( a->acl_filter ) {
+		filter_free( a->acl_filter );
+	}
+	if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
+		if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
+			regfree( &a->acl_dn_re );
+		}
+		free ( a->acl_dn_pat.bv_val );
+	}
+	if ( a->acl_attrs ) {
+		for ( an = a->acl_attrs; !BER_BVISNULL( &an->an_name ); an++ ) {
+			free( an->an_name.bv_val );
+		}
+		free( a->acl_attrs );
+
+		if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
+			regfree( &a->acl_attrval_re );
+		}
+
+		if ( !BER_BVISNULL( &a->acl_attrval ) ) {
+			ber_memfree( a->acl_attrval.bv_val );
+		}
+	}
+	for ( ; a->acl_access; a->acl_access = n ) {
+		n = a->acl_access->a_next;
+		access_free( a->acl_access );
+	}
+	free( a );
+}
+
+void
+acl_destroy( AccessControl *a )
+{
+	AccessControl *n;
+
+	for ( ; a; a = n ) {
+		n = a->acl_next;
+		acl_free( a );
+	}
+
+	if ( !BER_BVISNULL( &aclbuf ) ) {
+		ch_free( aclbuf.bv_val );
+		BER_BVZERO( &aclbuf );
+	}
+}
+
+char *
+access2str( slap_access_t access )
+{
+	if ( access == ACL_NONE ) {
+		return "none";
+
+	} else if ( access == ACL_DISCLOSE ) {
+		return "disclose";
+
+	} else if ( access == ACL_AUTH ) {
+		return "auth";
+
+	} else if ( access == ACL_COMPARE ) {
+		return "compare";
+
+	} else if ( access == ACL_SEARCH ) {
+		return "search";
+
+	} else if ( access == ACL_READ ) {
+		return "read";
+
+	} else if ( access == ACL_WRITE ) {
+		return "write";
+
+	} else if ( access == ACL_WADD ) {
+		return "add";
+
+	} else if ( access == ACL_WDEL ) {
+		return "delete";
+
+	} else if ( access == ACL_MANAGE ) {
+		return "manage";
+
+	}
+
+	return "unknown";
+}
+
+slap_access_t
+str2access( const char *str )
+{
+	if ( strcasecmp( str, "none" ) == 0 ) {
+		return ACL_NONE;
+
+	} else if ( strcasecmp( str, "disclose" ) == 0 ) {
+		return ACL_DISCLOSE;
+
+	} else if ( strcasecmp( str, "auth" ) == 0 ) {
+		return ACL_AUTH;
+
+	} else if ( strcasecmp( str, "compare" ) == 0 ) {
+		return ACL_COMPARE;
+
+	} else if ( strcasecmp( str, "search" ) == 0 ) {
+		return ACL_SEARCH;
+
+	} else if ( strcasecmp( str, "read" ) == 0 ) {
+		return ACL_READ;
+
+	} else if ( strcasecmp( str, "write" ) == 0 ) {
+		return ACL_WRITE;
+
+	} else if ( strcasecmp( str, "add" ) == 0 ) {
+		return ACL_WADD;
+
+	} else if ( strcasecmp( str, "delete" ) == 0 ) {
+		return ACL_WDEL;
+
+	} else if ( strcasecmp( str, "manage" ) == 0 ) {
+		return ACL_MANAGE;
+	}
+
+	return( ACL_INVALID_ACCESS );
+}
+
+static char *
+safe_strncopy( char *ptr, const char *src, size_t n, struct berval *buf )
+{
+	while ( ptr + n >= buf->bv_val + buf->bv_len ) {
+		char *tmp = ch_realloc( buf->bv_val, 2*buf->bv_len );
+		if ( tmp == NULL ) {
+			return NULL;
+		}
+		ptr = tmp + (ptr - buf->bv_val);
+		buf->bv_val = tmp;
+		buf->bv_len *= 2;
+	}
+
+	return lutil_strncopy( ptr, src, n );
+}
+
+static char *
+safe_strcopy( char *ptr, const char *s, struct berval *buf )
+{
+	size_t n = strlen( s );
+
+	return safe_strncopy( ptr, s, n, buf );
+}
+
+static char *
+safe_strbvcopy( char *ptr, const struct berval *bv, struct berval *buf )
+{
+	return safe_strncopy( ptr, bv->bv_val, bv->bv_len, buf );
+}
+
+#define acl_safe_strcopy( ptr, s ) safe_strcopy( (ptr), (s), &aclbuf )
+#define acl_safe_strncopy( ptr, s, n ) safe_strncopy( (ptr), (s), (n), &aclbuf )
+#define acl_safe_strbvcopy( ptr, bv ) safe_strbvcopy( (ptr), (bv), &aclbuf )
+
+static char *
+dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
+{
+	*ptr++ = ' ';
+
+	if ( is_realdn ) {
+		ptr = acl_safe_strcopy( ptr, "real" );
+	}
+
+	if ( ber_bvccmp( &bdn->a_pat, '*' ) ||
+		bdn->a_style == ACL_STYLE_ANONYMOUS ||
+		bdn->a_style == ACL_STYLE_USERS ||
+		bdn->a_style == ACL_STYLE_SELF )
+	{
+		if ( is_realdn ) {
+			assert( ! ber_bvccmp( &bdn->a_pat, '*' ) );
+		}
+			
+		ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
+		if ( bdn->a_style == ACL_STYLE_SELF && bdn->a_self_level != 0 ) {
+			char buf[SLAP_TEXT_BUFLEN];
+			int n = snprintf( buf, sizeof(buf), ".level{%d}", bdn->a_self_level );
+			if ( n > 0 ) {
+				ptr = acl_safe_strncopy( ptr, buf, n );
+			} /* else ? */
+		}
+
+	} else {
+		ptr = acl_safe_strcopy( ptr, "dn." );
+		if ( bdn->a_style == ACL_STYLE_BASE )
+			ptr = acl_safe_strcopy( ptr, style_base );
+		else 
+			ptr = acl_safe_strcopy( ptr, style_strings[bdn->a_style] );
+		if ( bdn->a_style == ACL_STYLE_LEVEL ) {
+			char buf[SLAP_TEXT_BUFLEN];
+			int n = snprintf( buf, sizeof(buf), "{%d}", bdn->a_level );
+			if ( n > 0 ) {
+				ptr = acl_safe_strncopy( ptr, buf, n );
+			} /* else ? */
+		}
+		if ( bdn->a_expand ) {
+			ptr = acl_safe_strcopy( ptr, ",expand" );
+		}
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
+		ptr = acl_safe_strcopy( ptr, "\"" );
+	}
+	return ptr;
+}
+
+static char *
+access2text( Access *b, char *ptr )
+{
+	char maskbuf[ACCESSMASK_MAXLEN];
+
+	ptr = acl_safe_strcopy( ptr, "\tby" );
+
+	if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
+		ptr = dnaccess2text( &b->a_dn, ptr, 0 );
+	}
+	if ( b->a_dn_at ) {
+		ptr = acl_safe_strcopy( ptr, " dnattr=" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_dn_at->ad_cname );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
+		ptr = dnaccess2text( &b->a_realdn, ptr, 1 );
+	}
+	if ( b->a_realdn_at ) {
+		ptr = acl_safe_strcopy( ptr, " realdnattr=" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_realdn_at->ad_cname );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
+		ptr = acl_safe_strcopy( ptr, " group/" );
+		ptr = acl_safe_strcopy( ptr, b->a_group_oc ?
+			b->a_group_oc->soc_cname.bv_val : SLAPD_GROUP_CLASS );
+		ptr = acl_safe_strcopy( ptr, "/" );
+		ptr = acl_safe_strcopy( ptr, b->a_group_at ?
+			b->a_group_at->ad_cname.bv_val : SLAPD_GROUP_ATTR );
+		ptr = acl_safe_strcopy( ptr, "." );
+		ptr = acl_safe_strcopy( ptr, style_strings[b->a_group_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_group_pat );
+		ptr = acl_safe_strcopy( ptr, "\"" );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
+		ptr = acl_safe_strcopy( ptr, " peername" );
+		ptr = acl_safe_strcopy( ptr, "." );
+		ptr = acl_safe_strcopy( ptr, style_strings[b->a_peername_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_peername_pat );
+		ptr = acl_safe_strcopy( ptr, "\"" );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
+		ptr = acl_safe_strcopy( ptr, " sockname" );
+		ptr = acl_safe_strcopy( ptr, "." );
+		ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockname_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_sockname_pat );
+		ptr = acl_safe_strcopy( ptr, "\"" );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
+		ptr = acl_safe_strcopy( ptr, " domain" );
+		ptr = acl_safe_strcopy( ptr, "." );
+		ptr = acl_safe_strcopy( ptr, style_strings[b->a_domain_style] );
+		if ( b->a_domain_expand ) {
+			ptr = acl_safe_strcopy( ptr, ",expand" );
+		}
+		ptr = acl_safe_strcopy( ptr, "=" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_domain_pat );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
+		ptr = acl_safe_strcopy( ptr, " sockurl" );
+		ptr = acl_safe_strcopy( ptr, "." );
+		ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockurl_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_sockurl_pat );
+		ptr = acl_safe_strcopy( ptr, "\"" );
+	}
+
+	if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
+		ptr = acl_safe_strcopy( ptr, " set" );
+		ptr = acl_safe_strcopy( ptr, "." );
+		ptr = acl_safe_strcopy( ptr, style_strings[b->a_set_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &b->a_set_pat );
+		ptr = acl_safe_strcopy( ptr, "\"" );
+	}
+
+#ifdef SLAP_DYNACL
+	if ( b->a_dynacl ) {
+		slap_dynacl_t	*da;
+
+		for ( da = b->a_dynacl; da; da = da->da_next ) {
+			if ( da->da_unparse ) {
+				struct berval bv = BER_BVNULL;
+				(void)( *da->da_unparse )( da->da_private, &bv );
+				assert( !BER_BVISNULL( &bv ) );
+				ptr = acl_safe_strbvcopy( ptr, &bv );
+				ch_free( bv.bv_val );
+			}
+		}
+	}
+#endif /* SLAP_DYNACL */
+
+	/* Security Strength Factors */
+	if ( b->a_authz.sai_ssf ) {
+		char buf[SLAP_TEXT_BUFLEN];
+		int n = snprintf( buf, sizeof(buf), " ssf=%u", 
+			b->a_authz.sai_ssf );
+		ptr = acl_safe_strncopy( ptr, buf, n );
+	}
+	if ( b->a_authz.sai_transport_ssf ) {
+		char buf[SLAP_TEXT_BUFLEN];
+		int n = snprintf( buf, sizeof(buf), " transport_ssf=%u",
+			b->a_authz.sai_transport_ssf );
+		ptr = acl_safe_strncopy( ptr, buf, n );
+	}
+	if ( b->a_authz.sai_tls_ssf ) {
+		char buf[SLAP_TEXT_BUFLEN];
+		int n = snprintf( buf, sizeof(buf), " tls_ssf=%u",
+			b->a_authz.sai_tls_ssf );
+		ptr = acl_safe_strncopy( ptr, buf, n );
+	}
+	if ( b->a_authz.sai_sasl_ssf ) {
+		char buf[SLAP_TEXT_BUFLEN];
+		int n = snprintf( buf, sizeof(buf), " sasl_ssf=%u",
+			b->a_authz.sai_sasl_ssf );
+		ptr = acl_safe_strncopy( ptr, buf, n );
+	}
+
+	ptr = acl_safe_strcopy( ptr, " " );
+	if ( b->a_dn_self ) {
+		ptr = acl_safe_strcopy( ptr, "self" );
+	} else if ( b->a_realdn_self ) {
+		ptr = acl_safe_strcopy( ptr, "realself" );
+	}
+	ptr = acl_safe_strcopy( ptr, accessmask2str( b->a_access_mask, maskbuf, 0 ));
+	if ( !maskbuf[0] ) ptr--;
+
+	if( b->a_type == ACL_BREAK ) {
+		ptr = acl_safe_strcopy( ptr, " break" );
+
+	} else if( b->a_type == ACL_CONTINUE ) {
+		ptr = acl_safe_strcopy( ptr, " continue" );
+
+	} else if( b->a_type != ACL_STOP ) {
+		ptr = acl_safe_strcopy( ptr, " unknown-control" );
+	} else {
+		if ( !maskbuf[0] ) ptr = acl_safe_strcopy( ptr, " stop" );
+	}
+	ptr = acl_safe_strcopy( ptr, "\n" );
+
+	return ptr;
+}
+
+void
+acl_unparse( AccessControl *a, struct berval *bv )
+{
+	Access	*b;
+	char	*ptr;
+	int	to = 0;
+
+	if ( BER_BVISNULL( &aclbuf ) ) {
+		aclbuf.bv_val = ch_malloc( ACLBUF_CHUNKSIZE );
+		aclbuf.bv_len = ACLBUF_CHUNKSIZE;
+	}
+
+	bv->bv_len = 0;
+
+	ptr = aclbuf.bv_val;
+
+	ptr = acl_safe_strcopy( ptr, "to" );
+	if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
+		to++;
+		ptr = acl_safe_strcopy( ptr, " dn." );
+		if ( a->acl_dn_style == ACL_STYLE_BASE )
+			ptr = acl_safe_strcopy( ptr, style_base );
+		else
+			ptr = acl_safe_strcopy( ptr, style_strings[a->acl_dn_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &a->acl_dn_pat );
+		ptr = acl_safe_strcopy( ptr, "\"\n" );
+	}
+
+	if ( a->acl_filter != NULL ) {
+		struct berval	fbv = BER_BVNULL;
+
+		to++;
+		filter2bv( a->acl_filter, &fbv );
+		ptr = acl_safe_strcopy( ptr, " filter=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &fbv );
+		ptr = acl_safe_strcopy( ptr, "\"\n" );
+		ch_free( fbv.bv_val );
+	}
+
+	if ( a->acl_attrs != NULL ) {
+		int	first = 1;
+		AttributeName *an;
+		to++;
+
+		ptr = acl_safe_strcopy( ptr, " attrs=" );
+		for ( an = a->acl_attrs; an && !BER_BVISNULL( &an->an_name ); an++ ) {
+			if ( ! first ) ptr = acl_safe_strcopy( ptr, ",");
+			if (an->an_oc) {
+				ptr = acl_safe_strcopy( ptr, ( an->an_flags & SLAP_AN_OCEXCLUDE ) ? "!" : "@" );
+				ptr = acl_safe_strbvcopy( ptr, &an->an_oc->soc_cname );
+
+			} else {
+				ptr = acl_safe_strbvcopy( ptr, &an->an_name );
+			}
+			first = 0;
+		}
+		ptr = acl_safe_strcopy( ptr, "\n" );
+	}
+
+	if ( !BER_BVISNULL( &a->acl_attrval ) ) {
+		to++;
+		ptr = acl_safe_strcopy( ptr, " val." );
+		if ( a->acl_attrval_style == ACL_STYLE_BASE &&
+			a->acl_attrs[0].an_desc->ad_type->sat_syntax ==
+				slap_schema.si_syn_distinguishedName )
+			ptr = acl_safe_strcopy( ptr, style_base );
+		else
+			ptr = acl_safe_strcopy( ptr, style_strings[a->acl_attrval_style] );
+		ptr = acl_safe_strcopy( ptr, "=\"" );
+		ptr = acl_safe_strbvcopy( ptr, &a->acl_attrval );
+		ptr = acl_safe_strcopy( ptr, "\"\n" );
+	}
+
+	if ( !to ) {
+		ptr = acl_safe_strcopy( ptr, " *\n" );
+	}
+
+	for ( b = a->acl_access; b != NULL; b = b->a_next ) {
+		ptr = access2text( b, ptr );
+	}
+	*ptr = '\0';
+	bv->bv_val = aclbuf.bv_val;
+	bv->bv_len = ptr - bv->bv_val;
+}
+
+#ifdef LDAP_DEBUG
+static void
+print_acl( Backend *be, AccessControl *a )
+{
+	struct berval bv;
+
+	acl_unparse( a, &bv );
+	fprintf( stderr, "%s ACL: access %s\n",
+		be == NULL ? "Global" : "Backend", bv.bv_val );
+}
+#endif /* LDAP_DEBUG */