Resurrect suffix aliasing...

servers/slapd/Makefile.in

@@ -11,7 +11,7 @@ SRCS	= main.c daemon.c connection.c search.c filter.c add.c charray.c \
 		phonetic.c acl.c str2filter.c aclparse.c init.c user.c \
 		repl.c lock.c controls.c extended.c \
 		schema.c schemaparse.c monitor.c configinfo.c \
-		root_dse.c module.c
+		root_dse.c module.c suffixalias.c
 OBJS	= main.o daemon.o connection.o search.o filter.o add.o charray.o \
 		attr.o entry.o config.o backend.o result.o operation.o \
 		dn.o compare.o modify.o delete.o modrdn.o ch_malloc.o \
@@ -19,7 +19,7 @@ OBJS	= main.o daemon.o connection.o search.o filter.o add.o charray.o \
 		phonetic.o acl.o str2filter.o aclparse.o init.o user.o \
 		repl.o lock.o controls.o extended.o \
 		schema.o schemaparse.o monitor.o configinfo.o \
-		root_dse.o module.o
+		root_dse.o module.o suffixalias.o
 
 LDAP_INCDIR= ../../include
 LDAP_LIBDIR= ../../libraries

servers/slapd/bind.c

@@ -281,6 +281,9 @@ do_bind(
 		/* alias suffix */
 		char *edn;
 
+		/* deref suffix alias if appropriate */
+		ndn = suffix_alias( be, ndn );
+
 		if ( (*be->be_bind)( be, conn, op, ndn, method, mech, &cred, &edn ) == 0 ) {
 			ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 

servers/slapd/compare.c

@@ -97,6 +97,9 @@ do_compare(
 		return 1;
 	}
 
+	/* deref suffix alias if appropriate */
+	ndn = suffix_alias( be, ndn );
+
 	if ( be->be_compare ) {
 		(*be->be_compare)( be, conn, op, ndn, &ava );
 	} else {

servers/slapd/config.c

@@ -204,6 +204,7 @@ read_config( char *fname )
 
 		/* set database suffix */
 		} else if ( strcasecmp( cargv[0], "suffix" ) == 0 ) {
+			Backend *tmp_be;
 			if ( cargc < 2 ) {
 				Debug( LDAP_DEBUG_ANY,
 		    "%s: line %d: missing dn in \"suffix <dn>\" line\n",
@@ -218,6 +219,14 @@ read_config( char *fname )
 				Debug( LDAP_DEBUG_ANY,
 "%s: line %d: suffix line must appear inside a database definition (ignored)\n",
 				    fname, lineno, 0 );
+			} else if ( ( tmp_be = select_backend( cargv[1] ) ) == be ) {
+				Debug( LDAP_DEBUG_ANY,
+"%s: line %d: suffix already served by this backend (ignored)\n",
+				    fname, lineno, 0 );
+			} else if ( tmp_be  != NULL ) {
+				Debug( LDAP_DEBUG_ANY,
+"%s: line %d: suffix already served by a preceeding backend \"%s\" (ignored)\n",
+				    fname, lineno, tmp_be->be_suffix[0] );
 			} else {
 				char *dn = ch_strdup( cargv[1] );
 				(void) dn_normalize( dn );
@@ -227,6 +236,60 @@ read_config( char *fname )
 				free( dn );
 			}
 
+		/* set database suffixAlias */
+		} else if ( strcasecmp( cargv[0], "suffixAlias" ) == 0 ) {
+			Backend *tmp_be;
+			if ( cargc < 2 ) {
+				Debug( LDAP_DEBUG_ANY,
+"%s: line %d: missing alias and aliased_dn in \"suffixAlias <alias> <aliased_dn>\" line\n",
+					fname, lineno, 0 );
+				return( 1 );
+			} else if ( cargc < 3 ) {
+				Debug( LDAP_DEBUG_ANY,
+"%s: line %d: missing aliased_dn in \"suffixAlias <alias> <aliased_dn>\" line\n",
+				fname, lineno, 0 );
+				return( 1 );
+			} else if ( cargc > 3 ) {
+				Debug( LDAP_DEBUG_ANY,
+					"%s: line %d: extra cruft in suffixAlias line (ignored)\n",
+				fname, lineno, 0 );
+			}
+
+			if ( be == NULL ) {
+				Debug( LDAP_DEBUG_ANY,
+					"%s: line %d: suffixAlias line"
+					" must appear inside a database definition (ignored)\n",
+					fname, lineno, 0 );
+			} else if ( (tmp_be = select_backend( cargv[1] )) != NULL ) {
+				Debug( LDAP_DEBUG_ANY,
+					"%s: line %d: suffixAlias served by"
+					"  a preceeding backend \"%s\" (ignored)\n",
+					fname, lineno, tmp_be->be_suffix[0] );
+
+			} else if ( (tmp_be = select_backend( cargv[2] )) != NULL ) {
+				Debug( LDAP_DEBUG_ANY,
+					"%s: line %d: suffixAlias derefs to differnet backend"
+					"  a preceeding backend \"%s\" (ignored)\n",
+					fname, lineno, tmp_be->be_suffix[0] );
+
+			} else {
+				char *alias, *aliased_dn;
+
+				alias = ch_strdup( cargv[1] );
+				(void) dn_normalize( alias );
+
+				aliased_dn = ch_strdup( cargv[2] );
+				(void) dn_normalize( aliased_dn );
+
+				(void) dn_normalize_case( alias );
+				(void) dn_normalize_case( aliased_dn );
+				charray_add( &be->be_suffixAlias, alias );
+				charray_add( &be->be_suffixAlias, aliased_dn );
+
+				free(alias);
+				free(aliased_dn);
+			}
+
                /* set max deref depth */
                } else if ( strcasecmp( cargv[0], "maxDerefDepth" ) == 0 ) {
 					int i;

servers/slapd/delete.c

@@ -81,6 +81,9 @@ do_delete(
 		return rc;
 	}
 
+	/* deref suffix alias if appropriate */
+	ndn = suffix_alias( be, ndn );
+
 	/*
 	 * do the delete if 1 && (2 || 3)
 	 * 1) there is a delete function implemented in this backend;

servers/slapd/modify.c

@@ -172,6 +172,9 @@ do_modify(
 		return rc;
 	}
 
+	/* deref suffix alias if appropriate */
+	ndn = suffix_alias( be, ndn );
+
 	/*
 	 * do the modify if 1 && (2 || 3)
 	 * 1) there is a modify function implemented in this backend;

servers/slapd/modrdn.c

@@ -187,7 +187,6 @@ do_modrdn(
 		return rc;
 	}
 
-
 	/* Make sure that the entry being changed and the newSuperior are in 
 	 * the same backend, otherwise we return an error.
 	 */
@@ -208,8 +207,14 @@ do_modrdn(
 
 			return rc;
 		}
+
+		/* deref suffix alias if appropriate */
+		nnewSuperior = suffix_alias( be, nnewSuperior );
 	}
 
+	/* deref suffix alias if appropriate */
+	ndn = suffix_alias( be, ndn );
+
 	/*
 	 * do the add if 1 && (2 || 3)
 	 * 1) there is an add function implemented in this backend;

servers/slapd/proto-slap.h

@@ -350,6 +350,11 @@ char *scherr2str LDAP_P((int code));
 
 Filter * str2filter LDAP_P(( char *str ));
 
+/*
+ * suffixalias.c
+ */
+char *suffix_alias LDAP_P(( Backend *be, char *ndn ));
+
 /*
  * value.c
  */

servers/slapd/search.c

@@ -200,6 +200,9 @@ do_search(
 		goto return_results;
 	}
 
+	/* deref the base if needed */
+	base = suffix_alias( be, base );
+
 	/* actually do the search and send the result(s) */
 	if ( be->be_search ) {
 		(*be->be_search)( be, conn, op, base, scope, deref, sizelimit,

servers/slapd/slap.h

@@ -416,6 +416,7 @@ struct slap_backend_db {
 	/* these should be renamed from be_ to bd_ */
 	char	**be_suffix;	/* the DN suffixes of data in this backend */
 	char	**be_nsuffix;	/* the normalized DN suffixes in this backend */
+	char	**be_suffixAlias; /* pairs of DN suffix aliases and deref values */
 	char	*be_root_dn;	/* the magic "root" dn for this db 	*/
 	char	*be_root_ndn;	/* the magic "root" normalized dn for this db	*/
 	char	*be_root_pw;	/* the magic "root" password for this db	*/

servers/slapd/suffixalias.c

@@ -0,0 +1,74 @@
+/*
+ * Copyright 1999 The OpenLDAP Foundation, All Rights Reserved.
+ *
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file in the top level
+ * directory of this package.
+ */
+/* Portions
+ * Copyright (c) 1998 Will Ballantyne, ITSD, Government of BC
+ * 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 ITSD, Government of BC. The name of ITSD
+ * 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/string.h>
+#include <ac/socket.h>
+#include "slap.h"
+
+/* 
+ * given a normalized uppercased dn (or root part),
+ * return an aliased dn if any of the alias suffixes match
+ */
+char *suffix_alias(
+	Backend *be,
+	char *dn )
+{
+	int 	i, dnLength;
+
+	if(dn == NULL) return NULL;
+	if(be == NULL) return dn;
+
+	dnLength = strlen ( dn );
+
+	for ( i = 0;
+		be->be_suffixAlias != NULL && be->be_suffixAlias[i] != NULL;
+		i += 2 )
+	{
+		int aliasLength = strlen (be->be_suffixAlias[i]);
+		int diff = dnLength - aliasLength;
+
+		if ( diff < 0 ) {
+			/* alias is longer than dn */
+			continue;
+		} else if ( diff > 0 ) {
+			if ( ! DNSEPARATOR(dn[diff-1]) ) {
+				/* boundary is not at a DN separator */
+				continue;
+			}
+			/* At a DN Separator */
+			/* XXX or an escaped separator... oh well */
+		}
+
+		if (!strcmp(be->be_suffixAlias[i], &dn[diff])) {
+			char *oldDN = dn;
+			dn = ch_malloc( diff + strlen(be->be_suffixAlias[i+1]) + 1 );
+			strncpy( dn, oldDN, diff );
+			strcpy( &dn[diff], be->be_suffixAlias[i+1] );
+			Debug( LDAP_DEBUG_ARGS,
+				"suffix_alias: converted \"%s\" to \"%s\"\n",
+				oldDN, dn, 0);
+			free (oldDN);
+			break;
+		}
+	}
+
+	return dn;
+}