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, 417 insertions, 0 deletions

diff --git a/servers/slapd/overlays/rwmconf.c b/servers/slapd/overlays/rwmconf.c
new file mode 100644
index 0000000..bb019db
--- /dev/null
+++ b/servers/slapd/overlays/rwmconf.c
@@ -0,0 +1,417 @@
+/* rwmconf.c - rewrite/map configuration file routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2021 The OpenLDAP Foundation.
+ * Portions Copyright 1999-2003 Howard Chu.
+ * Portions Copyright 2000-2003 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 the Howard Chu for inclusion
+ * in OpenLDAP Software and subsequently enhanced by Pierangelo
+ * Masarati.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_RWM
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "rwm.h"
+#include "lutil.h"
+
+int
+rwm_map_config(
+		struct ldapmap	*oc_map,
+		struct ldapmap	*at_map,
+		const char	*fname,
+		int		lineno,
+		int		argc,
+		char		**argv )
+{
+	struct ldapmap		*map;
+	struct ldapmapping	*mapping;
+	char			*src, *dst;
+	int			is_oc = 0;
+	int			rc = 0;
+
+	if ( argc < 3 || argc > 4 ) {
+		Debug( LDAP_DEBUG_ANY,
+	"%s: line %d: syntax is \"map {objectclass | attribute} [<local> | *] {<foreign> | *}\"\n",
+			fname, lineno, 0 );
+		return 1;
+	}
+
+	if ( strcasecmp( argv[1], "objectclass" ) == 0 ) {
+		map = oc_map;
+		is_oc = 1;
+
+	} else if ( strcasecmp( argv[1], "attribute" ) == 0 ) {
+		map = at_map;
+
+	} else {
+		Debug( LDAP_DEBUG_ANY, "%s: line %d: syntax is "
+			"\"map {objectclass | attribute} [<local> | *] "
+			"{<foreign> | *}\"\n",
+			fname, lineno, 0 );
+		return 1;
+	}
+
+	if ( !is_oc && map->map == NULL ) {
+		/* only init if required */
+		if ( rwm_map_init( map, &mapping ) != LDAP_SUCCESS ) {
+			return 1;
+		}
+	}
+
+	if ( strcmp( argv[2], "*" ) == 0 ) {
+		if ( argc < 4 || strcmp( argv[3], "*" ) == 0 ) {
+			map->drop_missing = ( argc < 4 );
+			goto success_return;
+		}
+		src = dst = argv[3];
+
+	} else if ( argc < 4 ) {
+		src = "";
+		dst = argv[2];
+
+	} else {
+		src = argv[2];
+		dst = ( strcmp( argv[3], "*" ) == 0 ? src : argv[3] );
+	}
+
+	if ( ( map == at_map )
+			&& ( strcasecmp( src, "objectclass" ) == 0
+			|| strcasecmp( dst, "objectclass" ) == 0 ) )
+	{
+		Debug( LDAP_DEBUG_ANY,
+			"%s: line %d: objectclass attribute cannot be mapped\n",
+			fname, lineno, 0 );
+		return 1;
+	}
+
+	mapping = (struct ldapmapping *)ch_calloc( 2,
+		sizeof(struct ldapmapping) );
+	if ( mapping == NULL ) {
+		Debug( LDAP_DEBUG_ANY,
+			"%s: line %d: out of memory\n",
+			fname, lineno, 0 );
+		return 1;
+	}
+	ber_str2bv( src, 0, 1, &mapping[0].m_src );
+	ber_str2bv( dst, 0, 1, &mapping[0].m_dst );
+	mapping[1].m_src = mapping[0].m_dst;
+	mapping[1].m_dst = mapping[0].m_src;
+
+	mapping[0].m_flags = RWMMAP_F_NONE;
+	mapping[1].m_flags = RWMMAP_F_NONE;
+
+	/*
+	 * schema check
+	 */
+	if ( is_oc ) {
+		if ( src[0] != '\0' ) {
+			mapping[0].m_src_oc = oc_bvfind( &mapping[0].m_src );
+			if ( mapping[0].m_src_oc == NULL ) {
+				Debug( LDAP_DEBUG_ANY,
+	"%s: line %d: warning, source objectClass '%s' "
+	"should be defined in schema\n",
+					fname, lineno, src );
+
+				/*
+				 * FIXME: this should become an err
+				 */
+				mapping[0].m_src_oc = ch_malloc( sizeof( ObjectClass ) );
+				memset( mapping[0].m_src_oc, 0, sizeof( ObjectClass ) );
+				mapping[0].m_src_oc->soc_cname = mapping[0].m_src;
+				mapping[0].m_flags |= RWMMAP_F_FREE_SRC;
+			}
+			mapping[1].m_dst_oc = mapping[0].m_src_oc;
+		}
+
+		mapping[0].m_dst_oc = oc_bvfind( &mapping[0].m_dst );
+		if ( mapping[0].m_dst_oc == NULL ) {
+			Debug( LDAP_DEBUG_ANY,
+	"%s: line %d: warning, destination objectClass '%s' "
+	"is not defined in schema\n",
+				fname, lineno, dst );
+
+			mapping[0].m_dst_oc = oc_bvfind_undef( &mapping[0].m_dst );
+			if ( mapping[0].m_dst_oc == NULL ) {
+				Debug( LDAP_DEBUG_ANY, "%s: line %d: unable to mimic destination objectClass '%s'\n",
+					fname, lineno, dst );
+				goto error_return;
+			}
+		}
+		mapping[1].m_src_oc = mapping[0].m_dst_oc;
+
+		mapping[0].m_flags |= RWMMAP_F_IS_OC;
+		mapping[1].m_flags |= RWMMAP_F_IS_OC;
+
+	} else {
+		int			rc;
+		const char		*text = NULL;
+
+		if ( src[0] != '\0' ) {
+			rc = slap_bv2ad( &mapping[0].m_src,
+					&mapping[0].m_src_ad, &text );
+			if ( rc != LDAP_SUCCESS ) {
+				Debug( LDAP_DEBUG_ANY,
+	"%s: line %d: warning, source attributeType '%s' "
+	"should be defined in schema\n",
+					fname, lineno, src );
+
+				/*
+				 * we create a fake "proxied" ad 
+				 * and add it here.
+				 */
+
+				rc = slap_bv2undef_ad( &mapping[0].m_src,
+						&mapping[0].m_src_ad, &text,
+						SLAP_AD_PROXIED );
+				if ( rc != LDAP_SUCCESS ) {
+					char prefix[1024];
+					snprintf( prefix, sizeof(prefix),
+	"%s: line %d: source attributeType '%s': %d",
+						fname, lineno, src, rc );
+					Debug( LDAP_DEBUG_ANY, "%s (%s)\n",
+						prefix, text ? text : "null", 0 );
+					goto error_return;
+				}
+
+			}
+			mapping[1].m_dst_ad = mapping[0].m_src_ad;
+		}
+
+		rc = slap_bv2ad( &mapping[0].m_dst, &mapping[0].m_dst_ad, &text );
+		if ( rc != LDAP_SUCCESS ) {
+			Debug( LDAP_DEBUG_ANY,
+	"%s: line %d: warning, destination attributeType '%s' "
+	"is not defined in schema\n",
+				fname, lineno, dst );
+
+			rc = slap_bv2undef_ad( &mapping[0].m_dst,
+					&mapping[0].m_dst_ad, &text,
+					SLAP_AD_PROXIED );
+			if ( rc != LDAP_SUCCESS ) {
+				char prefix[1024];
+				snprintf( prefix, sizeof(prefix), 
+	"%s: line %d: destination attributeType '%s': %d",
+					fname, lineno, dst, rc );
+				Debug( LDAP_DEBUG_ANY, "%s (%s)\n",
+					prefix, text ? text : "null", 0 );
+				goto error_return;
+			}
+		}
+		mapping[1].m_src_ad = mapping[0].m_dst_ad;
+	}
+
+	if ( ( src[0] != '\0' && avl_find( map->map, (caddr_t)mapping, rwm_mapping_cmp ) != NULL)
+			|| avl_find( map->remap, (caddr_t)&mapping[1], rwm_mapping_cmp ) != NULL)
+	{
+		Debug( LDAP_DEBUG_ANY,
+			"%s: line %d: duplicate mapping found.\n",
+			fname, lineno, 0 );
+		/* FIXME: free stuff */
+		goto error_return;
+	}
+
+	if ( src[0] != '\0' ) {
+		avl_insert( &map->map, (caddr_t)&mapping[0],
+					rwm_mapping_cmp, rwm_mapping_dup );
+	}
+	avl_insert( &map->remap, (caddr_t)&mapping[1],
+				rwm_mapping_cmp, rwm_mapping_dup );
+
+success_return:;
+	return rc;
+
+error_return:;
+	if ( mapping ) {
+		rwm_mapping_free( mapping );
+	}
+
+	return 1;
+}
+
+static char *
+rwm_suffix_massage_regexize( const char *s )
+{
+	char *res, *ptr;
+	const char *p, *r;
+	int i;
+
+	if ( s[0] == '\0' ) {
+		return ch_strdup( "^(.+)$" );
+	}
+
+	for ( i = 0, p = s; 
+			( r = strchr( p, ',' ) ) != NULL; 
+			p = r + 1, i++ )
+		;
+
+	res = ch_calloc( sizeof( char ), strlen( s )
+			+ STRLENOF( "((.+),)?" )
+			+ STRLENOF( "[ ]?" ) * i
+			+ STRLENOF( "$" ) + 1 );
+
+	ptr = lutil_strcopy( res, "((.+),)?" );
+	for ( i = 0, p = s;
+			( r = strchr( p, ',' ) ) != NULL;
+			p = r + 1 , i++ ) {
+		ptr = lutil_strncopy( ptr, p, r - p + 1 );
+		ptr = lutil_strcopy( ptr, "[ ]?" );
+
+		if ( r[ 1 ] == ' ' ) {
+			r++;
+		}
+	}
+	ptr = lutil_strcopy( ptr, p );
+	ptr[0] = '$';
+	ptr[1] = '\0';
+
+	return res;
+}
+
+static char *
+rwm_suffix_massage_patternize( const char *s, const char *p )
+{
+	ber_len_t	len;
+	char		*res, *ptr;
+
+	len = strlen( p );
+
+	if ( s[ 0 ] == '\0' ) {
+		len++;
+	}
+
+	res = ch_calloc( sizeof( char ), len + STRLENOF( "%1" ) + 1 );
+	if ( res == NULL ) {
+		return NULL;
+	}
+
+	ptr = lutil_strcopy( res, ( p[0] == '\0' ? "%2" : "%1" ) );
+	if ( s[ 0 ] == '\0' ) {
+		ptr[ 0 ] = ',';
+		ptr++;
+	}
+	lutil_strcopy( ptr, p );
+
+	return res;
+}
+
+int
+rwm_suffix_massage_config( 
+		struct rewrite_info *info,
+		struct berval *pvnc,
+		struct berval *nvnc,
+		struct berval *prnc,
+		struct berval *nrnc
+)
+{
+	char *rargv[ 5 ];
+	int line = 0;
+
+	rargv[ 0 ] = "rewriteEngine";
+	rargv[ 1 ] = "on";
+	rargv[ 2 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
+
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "default";
+	rargv[ 2 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
+
+	rargv[ 0 ] = "rewriteRule";
+	rargv[ 1 ] = rwm_suffix_massage_regexize( pvnc->bv_val );
+	rargv[ 2 ] = rwm_suffix_massage_patternize( pvnc->bv_val, prnc->bv_val );
+	rargv[ 3 ] = ":";
+	rargv[ 4 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+	ch_free( rargv[ 1 ] );
+	ch_free( rargv[ 2 ] );
+	
+	if ( BER_BVISEMPTY( pvnc ) ) {
+		rargv[ 0 ] = "rewriteRule";
+		rargv[ 1 ] = "^$";
+		rargv[ 2 ] = prnc->bv_val;
+		rargv[ 3 ] = ":";
+		rargv[ 4 ] = NULL;
+		rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+	}
+
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "searchEntryDN";
+	rargv[ 2 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
+	
+	rargv[ 0 ] = "rewriteRule";
+	rargv[ 1 ] = rwm_suffix_massage_regexize( prnc->bv_val );
+	rargv[ 2 ] = rwm_suffix_massage_patternize( prnc->bv_val, pvnc->bv_val );
+	rargv[ 3 ] = ":";
+	rargv[ 4 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+	ch_free( rargv[ 1 ] );
+	ch_free( rargv[ 2 ] );
+
+	if ( BER_BVISEMPTY( prnc ) ) {
+		rargv[ 0 ] = "rewriteRule";
+		rargv[ 1 ] = "^$";
+		rargv[ 2 ] = pvnc->bv_val;
+		rargv[ 3 ] = ":";
+		rargv[ 4 ] = NULL;
+		rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+	}
+
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "matchedDN";
+	rargv[ 2 ] = "alias";
+	rargv[ 3 ] = "searchEntryDN";
+	rargv[ 4 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+
+#ifdef RWM_REFERRAL_REWRITE
+	/* FIXME: we don't want this on by default, do we? */
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "referralDN";
+	rargv[ 2 ] = "alias";
+	rargv[ 3 ] = "searchEntryDN";
+	rargv[ 4 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+#else /* ! RWM_REFERRAL_REWRITE */
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "referralAttrDN";
+	rargv[ 2 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
+
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "referralDN";
+	rargv[ 2 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
+#endif /* ! RWM_REFERRAL_REWRITE */
+
+	rargv[ 0 ] = "rewriteContext";
+	rargv[ 1 ] = "searchAttrDN";
+	rargv[ 2 ] = "alias";
+	rargv[ 3 ] = "searchEntryDN";
+	rargv[ 4 ] = NULL;
+	rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
+
+	return 0;
+}
+
+#endif /* SLAPD_OVER_RWM */