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diff --git a/servers/slapd/backend.c b/servers/slapd/backend.c
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+/* backend.c - routines for dealing with back-end databases */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* 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/string.h>
+#include <ac/socket.h>
+#include <sys/stat.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "lutil.h"
+#include "lber_pvt.h"
+
+/*
+ * If a module is configured as dynamic, its header should not
+ * get included into slapd. While this is a general rule and does
+ * not have much of an effect in UNIX, this rule should be adhered
+ * to for Windows, where dynamic object code should not be implicitly
+ * imported into slapd without appropriate __declspec(dllimport) directives.
+ */
+
+int nBackendInfo = 0;
+slap_bi_head backendInfo = LDAP_STAILQ_HEAD_INITIALIZER(backendInfo);
+
+int nBackendDB = 0;
+slap_be_head backendDB = LDAP_STAILQ_HEAD_INITIALIZER(backendDB);
+
+static int
+backend_init_controls( BackendInfo *bi )
+{
+ if ( bi->bi_controls ) {
+ int i;
+
+ for ( i = 0; bi->bi_controls[ i ]; i++ ) {
+ int cid;
+
+ if ( slap_find_control_id( bi->bi_controls[ i ], &cid )
+ == LDAP_CONTROL_NOT_FOUND )
+ {
+ if ( !( slapMode & SLAP_TOOL_MODE ) ) {
+ assert( 0 );
+ }
+
+ return -1;
+ }
+
+ bi->bi_ctrls[ cid ] = 1;
+ }
+ }
+
+ return 0;
+}
+
+extern int syncrepl_monitor_init(void);
+
+int backend_init(void)
+{
+ int rc = -1;
+ BackendInfo *bi;
+
+ if((nBackendInfo != 0) || !LDAP_STAILQ_EMPTY(&backendInfo)) {
+ /* already initialized */
+ Debug( LDAP_DEBUG_ANY,
+ "backend_init: already initialized\n" );
+ return -1;
+ }
+
+ for( bi=slap_binfo; bi->bi_type != NULL; bi++,nBackendInfo++ ) {
+ assert( bi->bi_init != 0 );
+
+ rc = bi->bi_init( bi );
+
+ if(rc != 0) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_init: initialized for type \"%s\"\n",
+ bi->bi_type );
+ /* destroy those we've already inited */
+ for( nBackendInfo--;
+ nBackendInfo >= 0 ;
+ nBackendInfo-- )
+ {
+ if ( slap_binfo[nBackendInfo].bi_destroy ) {
+ slap_binfo[nBackendInfo].bi_destroy(
+ &slap_binfo[nBackendInfo] );
+ }
+ }
+ return rc;
+ }
+
+ LDAP_STAILQ_INSERT_TAIL(&backendInfo, bi, bi_next);
+ }
+ /* HACK: need schema defined in deterministic order */
+ syncrepl_monitor_init();
+
+ if ( nBackendInfo > 0) {
+ return 0;
+ }
+
+#ifdef SLAPD_MODULES
+ return 0;
+#else
+
+ Debug( LDAP_DEBUG_ANY,
+ "backend_init: failed\n" );
+
+ return rc;
+#endif /* SLAPD_MODULES */
+}
+
+int backend_add(BackendInfo *aBackendInfo)
+{
+ int rc = 0;
+
+ if ( aBackendInfo->bi_init == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "backend_add: "
+ "backend type \"%s\" does not have the (mandatory)init function\n",
+ aBackendInfo->bi_type );
+ return -1;
+ }
+
+ rc = aBackendInfo->bi_init(aBackendInfo);
+ if ( rc != 0) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_add: initialization for type \"%s\" failed\n",
+ aBackendInfo->bi_type );
+ return rc;
+ }
+
+ (void)backend_init_controls( aBackendInfo );
+
+ /* now add the backend type to the Backend Info List */
+ LDAP_STAILQ_INSERT_TAIL( &backendInfo, aBackendInfo, bi_next );
+ nBackendInfo++;
+ return 0;
+}
+
+static int
+backend_set_controls( BackendDB *be )
+{
+ BackendInfo *bi = be->bd_info;
+
+ /* back-relay takes care of itself; so may do other */
+ if ( overlay_is_over( be ) ) {
+ bi = ((slap_overinfo *)be->bd_info->bi_private)->oi_orig;
+ }
+
+ if ( bi->bi_controls ) {
+ if ( be->be_ctrls[ SLAP_MAX_CIDS ] == 0 ) {
+ AC_MEMCPY( be->be_ctrls, bi->bi_ctrls,
+ sizeof( be->be_ctrls ) );
+ be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
+
+ } else {
+ int i;
+
+ for ( i = 0; i < SLAP_MAX_CIDS; i++ ) {
+ if ( bi->bi_ctrls[ i ] ) {
+ be->be_ctrls[ i ] = bi->bi_ctrls[ i ];
+ }
+ }
+ }
+
+ }
+
+ return 0;
+}
+
+/* startup a specific backend database */
+int backend_startup_one(Backend *be, ConfigReply *cr)
+{
+ int rc = 0;
+
+ assert( be != NULL );
+
+ LDAP_TAILQ_INIT( &be->be_pcsn_st.be_pcsn_list );
+
+ Debug( LDAP_DEBUG_TRACE,
+ "backend_startup_one: starting \"%s\"\n",
+ be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)" );
+
+ /* set database controls */
+ (void)backend_set_controls( be );
+
+#if 0
+ if ( !BER_BVISEMPTY( &be->be_rootndn )
+ && select_backend( &be->be_rootndn, 0 ) == be
+ && BER_BVISNULL( &be->be_rootpw ) )
+ {
+ /* warning: if rootdn entry is created,
+ * it can take rootdn privileges;
+ * set empty rootpw to prevent */
+ }
+#endif
+
+ if ( be->bd_info->bi_db_open ) {
+ rc = be->bd_info->bi_db_open( be, cr );
+ if ( rc == 0 ) {
+ (void)backend_set_controls( be );
+ be->be_flags |= SLAP_DBFLAG_OPEN;
+
+ } else {
+ char *type = be->bd_info->bi_type;
+ char *suffix = "(null)";
+
+ if ( overlay_is_over( be ) ) {
+ slap_overinfo *oi = (slap_overinfo *)be->bd_info->bi_private;
+ type = oi->oi_orig->bi_type;
+ }
+
+ if ( be->be_suffix != NULL && !BER_BVISNULL( &be->be_suffix[0] ) ) {
+ suffix = be->be_suffix[0].bv_val;
+ }
+
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup_one (type=%s, suffix=\"%s\"): "
+ "bi_db_open failed! (%d)\n",
+ type, suffix, rc );
+ }
+ }
+
+ return rc;
+}
+
+int backend_startup(Backend *be)
+{
+ int i;
+ int rc = 0;
+ BackendInfo *bi;
+ ConfigReply cr={0, ""};
+
+ if( ! ( nBackendDB > 0 ) ) {
+ /* no databases */
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup: %d databases to startup.\n",
+ nBackendDB );
+ return 1;
+ }
+
+ if(be != NULL) {
+ /* silent noop if disabled */
+ if ( SLAP_DBDISABLED( be ))
+ return 0;
+ if ( be->bd_info->bi_open ) {
+ rc = be->bd_info->bi_open( be->bd_info );
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup: bi_open failed!\n" );
+
+ return rc;
+ }
+ }
+
+ return backend_startup_one( be, &cr );
+ }
+
+ /* open frontend, if required */
+ if ( frontendDB->bd_info->bi_db_open ) {
+ rc = frontendDB->bd_info->bi_db_open( frontendDB, &cr );
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup: bi_db_open(frontend) failed! (%d)\n",
+ rc );
+ return rc;
+ }
+ frontendDB->be_flags |= SLAP_DBFLAG_OPEN;
+ }
+
+ /* open each backend type */
+ i = -1;
+ LDAP_STAILQ_FOREACH(bi, &backendInfo, bi_next) {
+ i++;
+ if( bi->bi_nDB == 0) {
+ /* no database of this type, don't open */
+ continue;
+ }
+
+ if( bi->bi_open ) {
+ rc = bi->bi_open( bi );
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup: bi_open %d (%s) failed!\n",
+ i, bi->bi_type );
+ return rc;
+ }
+ }
+
+ (void)backend_init_controls( bi );
+ }
+
+ /* open each backend database */
+ i = -1;
+ LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
+ i++;
+ if ( SLAP_DBDISABLED( be ))
+ continue;
+ if ( be->be_suffix == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup: warning, database %d (%s) "
+ "has no suffix\n",
+ i, be->bd_info->bi_type );
+ }
+
+ rc = backend_startup_one( be, &cr );
+
+ if ( rc ) return rc;
+ }
+
+ return rc;
+}
+
+int backend_num( Backend *be )
+{
+ int i = 0;
+ BackendDB *b2;
+
+ if( be == NULL ) return -1;
+
+ LDAP_STAILQ_FOREACH( b2, &backendDB, be_next ) {
+ if( be == b2 ) return i;
+ i++;
+ }
+ return -1;
+}
+
+int backend_shutdown( Backend *be )
+{
+ int rc = 0;
+ BackendInfo *bi;
+
+ if( be != NULL ) {
+ /* shutdown a specific backend database */
+
+ if ( be->bd_info->bi_nDB == 0 ) {
+ /* no database of this type, we never opened it */
+ return 0;
+ }
+
+ if ( be->bd_info->bi_db_close ) {
+ rc = be->bd_info->bi_db_close( be, NULL );
+ be->be_flags &= ~SLAP_DBFLAG_OPEN;
+ if ( rc ) return rc;
+ }
+
+ if( be->bd_info->bi_close ) {
+ rc = be->bd_info->bi_close( be->bd_info );
+ if ( rc ) return rc;
+ }
+
+ return 0;
+ }
+
+ /* close each backend database */
+ LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+ if ( SLAP_DBDISABLED( be ))
+ continue;
+ if ( be->bd_info->bi_db_close ) {
+ be->bd_info->bi_db_close( be, NULL );
+ be->be_flags &= ~SLAP_DBFLAG_OPEN;
+ }
+
+ if(rc != 0) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_close: bi_db_close %s failed!\n",
+ be->be_type );
+ }
+ }
+
+ /* close each backend type */
+ LDAP_STAILQ_FOREACH( bi, &backendInfo, bi_next ) {
+ if( bi->bi_nDB == 0 ) {
+ /* no database of this type */
+ continue;
+ }
+
+ if( bi->bi_close ) {
+ bi->bi_close( bi );
+ }
+ }
+
+ /* close frontend, if required */
+ if ( frontendDB->bd_info->bi_db_close ) {
+ rc = frontendDB->bd_info->bi_db_close ( frontendDB, NULL );
+ frontendDB->be_flags &= ~SLAP_DBFLAG_OPEN;
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "backend_startup: bi_db_close(frontend) failed! (%d)\n",
+ rc );
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * This function is supposed to be the exact counterpart
+ * of backend_startup_one(), although this one calls bi_db_destroy()
+ * while backend_startup_one() calls bi_db_open().
+ *
+ * Make sure backend_stopdown_one() destroys resources allocated
+ * by backend_startup_one(); only call backend_destroy_one() when
+ * all stuff in a BackendDB needs to be destroyed
+ */
+void
+backend_stopdown_one( BackendDB *bd )
+{
+ struct slap_csn_entry *csne;
+ csne = LDAP_TAILQ_FIRST( &bd->be_pcsn_st.be_pcsn_list );
+ while ( csne ) {
+ struct slap_csn_entry *tmp_csne = csne;
+
+ LDAP_TAILQ_REMOVE( &bd->be_pcsn_st.be_pcsn_list, csne, ce_csn_link );
+ ch_free( csne->ce_csn.bv_val );
+ csne = LDAP_TAILQ_NEXT( csne, ce_csn_link );
+ ch_free( tmp_csne );
+ }
+
+ if ( bd->bd_info->bi_db_destroy ) {
+ bd->bd_info->bi_db_destroy( bd, NULL );
+ }
+}
+
+void backend_destroy_one( BackendDB *bd, int dynamic )
+{
+ if ( dynamic ) {
+ LDAP_STAILQ_REMOVE(&backendDB, bd, BackendDB, be_next );
+ }
+
+ if ( bd->be_syncinfo ) {
+ syncinfo_free( bd->be_syncinfo, 1 );
+ }
+
+ backend_stopdown_one( bd );
+
+ ber_bvarray_free( bd->be_suffix );
+ ber_bvarray_free( bd->be_nsuffix );
+ if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
+ free( bd->be_rootdn.bv_val );
+ }
+ if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
+ free( bd->be_rootndn.bv_val );
+ }
+ if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
+ free( bd->be_rootpw.bv_val );
+ }
+ acl_destroy( bd->be_acl );
+ limits_destroy( bd->be_limits );
+ if ( bd->be_extra_anlist ) {
+ anlist_free( bd->be_extra_anlist, 1, NULL );
+ }
+ if ( !BER_BVISNULL( &bd->be_update_ndn ) ) {
+ ch_free( bd->be_update_ndn.bv_val );
+ }
+ if ( bd->be_update_refs ) {
+ ber_bvarray_free( bd->be_update_refs );
+ }
+
+ ldap_pvt_thread_mutex_destroy( &bd->be_pcsn_st.be_pcsn_mutex );
+
+ if ( dynamic ) {
+ free( bd );
+ }
+}
+
+int backend_destroy(void)
+{
+ BackendDB *bd;
+ BackendInfo *bi;
+
+ /* destroy each backend database */
+ while (( bd = LDAP_STAILQ_FIRST(&backendDB))) {
+ backend_destroy_one( bd, 1 );
+ }
+
+ /* destroy each backend type */
+ LDAP_STAILQ_FOREACH( bi, &backendInfo, bi_next ) {
+ if( bi->bi_destroy ) {
+ bi->bi_destroy( bi );
+ }
+ }
+
+ nBackendInfo = 0;
+ LDAP_STAILQ_INIT(&backendInfo);
+
+ /* destroy frontend database */
+ bd = frontendDB;
+ if ( bd ) {
+ if ( bd->bd_info->bi_db_destroy ) {
+ bd->bd_info->bi_db_destroy( bd, NULL );
+ }
+ ber_bvarray_free( bd->be_suffix );
+ ber_bvarray_free( bd->be_nsuffix );
+ if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
+ free( bd->be_rootdn.bv_val );
+ }
+ if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
+ free( bd->be_rootndn.bv_val );
+ }
+ if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
+ free( bd->be_rootpw.bv_val );
+ }
+ acl_destroy( bd->be_acl );
+ frontendDB = NULL;
+ }
+
+ return 0;
+}
+
+BackendInfo* backend_info(const char *type)
+{
+ BackendInfo *bi;
+
+ /* search for the backend type */
+ LDAP_STAILQ_FOREACH(bi,&backendInfo,bi_next) {
+ if( strcasecmp(bi->bi_type, type) == 0 ) {
+ return bi;
+ }
+ }
+
+ return NULL;
+}
+
+void
+backend_db_insert(
+ BackendDB *be,
+ int idx
+)
+{
+ /* If idx < 0, just add to end of list */
+ if ( idx < 0 ) {
+ LDAP_STAILQ_INSERT_TAIL(&backendDB, be, be_next);
+ } else if ( idx == 0 ) {
+ LDAP_STAILQ_INSERT_HEAD(&backendDB, be, be_next);
+ } else {
+ int i;
+ BackendDB *b2;
+
+ b2 = LDAP_STAILQ_FIRST(&backendDB);
+ idx--;
+ for (i=0; i<idx; i++) {
+ b2 = LDAP_STAILQ_NEXT(b2, be_next);
+ }
+ LDAP_STAILQ_INSERT_AFTER(&backendDB, b2, be, be_next);
+ }
+}
+
+void
+backend_db_move(
+ BackendDB *be,
+ int idx
+)
+{
+ LDAP_STAILQ_REMOVE(&backendDB, be, BackendDB, be_next);
+ backend_db_insert(be, idx);
+}
+
+BackendDB *
+backend_db_init(
+ const char *type,
+ BackendDB *b0,
+ int idx,
+ ConfigReply *cr)
+{
+ BackendInfo *bi = backend_info(type);
+ BackendDB *be = b0;
+ int rc = 0;
+
+ if( bi == NULL ) {
+ fprintf( stderr, "Unrecognized database type (%s)\n", type );
+ return NULL;
+ }
+
+ /* If be is provided, treat it as private. Otherwise allocate
+ * one and add it to the global list.
+ */
+ if ( !be ) {
+ be = ch_calloc( 1, sizeof(Backend) );
+ /* Just append */
+ if ( idx >= nbackends )
+ idx = -1;
+ nbackends++;
+ backend_db_insert( be, idx );
+ }
+
+ be->bd_info = bi;
+ be->bd_self = be;
+
+ be->be_def_limit = frontendDB->be_def_limit;
+ be->be_dfltaccess = frontendDB->be_dfltaccess;
+
+ be->be_restrictops = frontendDB->be_restrictops;
+ be->be_requires = frontendDB->be_requires;
+ be->be_ssf_set = frontendDB->be_ssf_set;
+
+ ldap_pvt_thread_mutex_init( &be->be_pcsn_st.be_pcsn_mutex );
+ be->be_pcsn_p = &be->be_pcsn_st;
+
+ /* assign a default depth limit for alias deref */
+ be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
+
+ if ( bi->bi_db_init ) {
+ rc = bi->bi_db_init( be, cr );
+ }
+
+ if ( rc != 0 ) {
+ fprintf( stderr, "database init failed (%s)\n", type );
+ /* If we created and linked this be, remove it and free it */
+ if ( !b0 ) {
+ LDAP_STAILQ_REMOVE(&backendDB, be, BackendDB, be_next);
+ ldap_pvt_thread_mutex_destroy( &be->be_pcsn_st.be_pcsn_mutex );
+ ch_free( be );
+ be = NULL;
+ nbackends--;
+ }
+ } else {
+ if ( !bi->bi_nDB ) {
+ backend_init_controls( bi );
+ }
+ bi->bi_nDB++;
+ }
+ return( be );
+}
+
+void
+be_db_close( void )
+{
+ BackendDB *be;
+
+ LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+ if ( be->bd_info->bi_db_close ) {
+ be->bd_info->bi_db_close( be, NULL );
+ be->be_flags &= ~SLAP_DBFLAG_OPEN;
+ }
+ }
+
+ if ( frontendDB->bd_info->bi_db_close ) {
+ frontendDB->bd_info->bi_db_close( frontendDB, NULL );
+ }
+
+}
+
+Backend *
+select_backend(
+ struct berval * dn,
+ int noSubs )
+{
+ int j;
+ ber_len_t len, dnlen = dn->bv_len;
+ Backend *be;
+
+ LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+ if ( be->be_nsuffix == NULL || SLAP_DBHIDDEN( be ) || SLAP_DBDISABLED( be )) {
+ continue;
+ }
+
+ for ( j = 0; !BER_BVISNULL( &be->be_nsuffix[j] ); j++ )
+ {
+ if ( ( SLAP_GLUE_SUBORDINATE( be ) ) && noSubs )
+ {
+ continue;
+ }
+
+ len = be->be_nsuffix[j].bv_len;
+
+ if ( len > dnlen ) {
+ /* suffix is longer than DN */
+ continue;
+ }
+
+ /*
+ * input DN is normalized, so the separator check
+ * need not look at escaping
+ */
+ if ( len && len < dnlen &&
+ !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
+ {
+ continue;
+ }
+
+ if ( strcmp( be->be_nsuffix[j].bv_val,
+ &dn->bv_val[dnlen-len] ) == 0 )
+ {
+ return be;
+ }
+ }
+ }
+
+ return be;
+}
+
+int
+be_issuffix(
+ Backend *be,
+ struct berval *bvsuffix )
+{
+ int i;
+
+ if ( be->be_nsuffix == NULL ) {
+ return 0;
+ }
+
+ for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
+ if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int
+be_issubordinate(
+ Backend *be,
+ struct berval *bvsubordinate )
+{
+ int i;
+
+ if ( be->be_nsuffix == NULL ) {
+ return 0;
+ }
+
+ for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
+ if ( dnIsSuffix( bvsubordinate, &be->be_nsuffix[i] ) ) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int
+be_isroot_dn( Backend *be, struct berval *ndn )
+{
+ if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
+ return 0;
+ }
+
+ return dn_match( &be->be_rootndn, ndn );
+}
+
+int
+be_slurp_update( Operation *op )
+{
+ return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
+ be_isupdate_dn( op->o_bd, &op->o_ndn ) );
+}
+
+int
+be_shadow_update( Operation *op )
+{
+ /* This assumes that all internal ops (connid <= -1000) on a syncrepl
+ * database are syncrepl operations.
+ */
+ return ( ( SLAP_SYNC_SHADOW( op->o_bd ) && SLAPD_SYNC_IS_SYNCCONN( op->o_connid ) ) ||
+ ( SLAP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn ) ) );
+}
+
+int
+be_isupdate_dn( Backend *be, struct berval *ndn )
+{
+ if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_update_ndn ) ) {
+ return 0;
+ }
+
+ return dn_match( &be->be_update_ndn, ndn );
+}
+
+struct berval *
+be_root_dn( Backend *be )
+{
+ return &be->be_rootdn;
+}
+
+int
+be_isroot( Operation *op )
+{
+ return be_isroot_dn( op->o_bd, &op->o_ndn );
+}
+
+int
+be_isroot_pw( Operation *op )
+{
+ return be_rootdn_bind( op, NULL ) == LDAP_SUCCESS;
+}
+
+/*
+ * checks if binding as rootdn
+ *
+ * return value:
+ * SLAP_CB_CONTINUE if not the rootdn, or if rootpw is null
+ * LDAP_SUCCESS if rootdn & rootpw
+ * LDAP_INVALID_CREDENTIALS if rootdn & !rootpw
+ *
+ * if rs != NULL
+ * if LDAP_SUCCESS, op->orb_edn is set
+ * if LDAP_INVALID_CREDENTIALS, response is sent to client
+ */
+int
+be_rootdn_bind( Operation *op, SlapReply *rs )
+{
+ int rc;
+#ifdef SLAPD_SPASSWD
+ void *old_authctx = NULL;
+#endif
+
+ assert( op->o_tag == LDAP_REQ_BIND );
+ assert( op->orb_method == LDAP_AUTH_SIMPLE );
+
+ if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
+ return SLAP_CB_CONTINUE;
+ }
+
+ if ( BER_BVISNULL( &op->o_bd->be_rootpw ) ) {
+ /* give the database a chance */
+ return SLAP_CB_CONTINUE;
+ }
+
+ if ( BER_BVISEMPTY( &op->o_bd->be_rootpw ) ) {
+ /* rootdn bind explicitly disallowed */
+ rc = LDAP_INVALID_CREDENTIALS;
+ if ( rs ) {
+ goto send_result;
+ }
+
+ return rc;
+ }
+
+#ifdef SLAPD_SPASSWD
+ ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)slap_sasl_bind,
+ op->o_conn->c_sasl_authctx, 0, &old_authctx, NULL );
+#endif
+
+ rc = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
+
+#ifdef SLAPD_SPASSWD
+ ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)slap_sasl_bind,
+ old_authctx, 0, NULL, NULL );
+#endif
+
+ rc = ( rc == 0 ? LDAP_SUCCESS : LDAP_INVALID_CREDENTIALS );
+ if ( rs ) {
+send_result:;
+ rs->sr_err = rc;
+
+ Debug( LDAP_DEBUG_TRACE, "%s: rootdn=\"%s\" bind%s\n",
+ op->o_log_prefix, op->o_bd->be_rootdn.bv_val,
+ rc == LDAP_SUCCESS ? " succeeded" : " failed" );
+
+ if ( rc == LDAP_SUCCESS ) {
+ /* Set to the pretty rootdn */
+ ber_dupbv( &op->orb_edn, &op->o_bd->be_rootdn );
+
+ } else {
+ send_ldap_result( op, rs );
+ }
+ }
+
+ return rc;
+}
+
+/* Inlined in proto-slap.h, sans assertions, when !(USE_RS_ASSERT) */
+int
+(slap_bi_op)(
+ BackendInfo *bi,
+ slap_operation_t which,
+ Operation *op,
+ SlapReply *rs )
+{
+ int rc;
+#ifndef slap_bi_op
+ void (*rsCheck)( const SlapReply *rs ) =
+ which < op_aux_operational ? rs_assert_ready : rs_assert_ok;
+#else
+# define rsCheck(rs) ((void) 0)
+#endif
+ BI_op_func *fn;
+
+ assert( bi != NULL );
+ assert( (unsigned) which < (unsigned) op_last );
+
+ fn = (&bi->bi_op_bind)[ which ];
+
+ assert( op != NULL );
+ assert( rs != NULL );
+ assert( fn != 0 );
+ rsCheck( rs );
+
+ rc = fn( op, rs );
+
+#ifndef slap_bi_op
+ if ( rc != SLAP_CB_CONTINUE && rc != SLAP_CB_BYPASS ) {
+ int err = rs->sr_err;
+
+ if ( 0 ) /* TODO */
+ if ( err == LDAP_COMPARE_TRUE || err == LDAP_COMPARE_FALSE ) {
+ assert( which == op_compare );
+ assert( rc == LDAP_SUCCESS );
+ }
+
+ rsCheck = which < op_extended ? rs_assert_done : rs_assert_ok;
+ if ( which == op_aux_chk_referrals ) {
+ if ( rc == LDAP_SUCCESS ) rsCheck = rs_assert_ready;
+ else if ( rc == LDAP_REFERRAL ) rsCheck = rs_assert_done;
+ } else if ( which == op_bind ) {
+ if ( rc == LDAP_SUCCESS ) rsCheck = rs_assert_ok;
+ }
+
+ /* TODO: Just what is the relation between rc and rs->sr_err? */
+ if ( rc != err &&
+ (rc != LDAP_SUCCESS ||
+ (err != LDAP_COMPARE_TRUE && err != LDAP_COMPARE_FALSE)) )
+ {
+ rs->sr_err = rc;
+ rsCheck( rs );
+ rs->sr_err = err;
+ }
+ }
+ rsCheck( rs );
+#endif
+
+ return rc;
+}
+
+int
+be_entry_release_rw(
+ Operation *op,
+ Entry *e,
+ int rw )
+{
+ if ( op->o_bd->be_release ) {
+ /* free and release entry from backend */
+ return op->o_bd->be_release( op, e, rw );
+ } else {
+ /* free entry */
+ entry_free( e );
+ return 0;
+ }
+}
+
+int
+backend_unbind( Operation *op, SlapReply *rs )
+{
+ BackendDB *be;
+
+ LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+ if ( be->be_unbind ) {
+ op->o_bd = be;
+ be->be_unbind( op, rs );
+ }
+ }
+
+ return 0;
+}
+
+int
+backend_connection_init(
+ Connection *conn )
+{
+ BackendDB *be;
+
+ LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+ if ( be->be_connection_init ) {
+ be->be_connection_init( be, conn );
+ }
+ }
+
+ return 0;
+}
+
+int
+backend_connection_destroy(
+ Connection *conn )
+{
+ BackendDB *be;
+
+ LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+ if ( be->be_connection_destroy ) {
+ be->be_connection_destroy( be, conn);
+ }
+ }
+
+ return 0;
+}
+
+int
+backend_check_controls(
+ Operation *op,
+ SlapReply *rs )
+{
+ LDAPControl **ctrls = op->o_ctrls;
+ rs->sr_err = LDAP_SUCCESS;
+
+ if( ctrls ) {
+ for( ; *ctrls != NULL ; ctrls++ ) {
+ int cid;
+
+ switch ( slap_global_control( op, (*ctrls)->ldctl_oid, &cid ) ) {
+ case LDAP_CONTROL_NOT_FOUND:
+ /* unrecognized control */
+ if ( (*ctrls)->ldctl_iscritical ) {
+ /* should not be reachable */
+ Debug( LDAP_DEBUG_ANY, "backend_check_controls: "
+ "unrecognized critical control: %s\n",
+ (*ctrls)->ldctl_oid );
+ assert( 0 );
+ } else {
+ Debug( LDAP_DEBUG_TRACE, "backend_check_controls: "
+ "unrecognized non-critical control: %s\n",
+ (*ctrls)->ldctl_oid );
+ }
+ break;
+
+ case LDAP_COMPARE_FALSE:
+ if ( !op->o_bd->be_ctrls[cid] && (*ctrls)->ldctl_iscritical ) {
+#ifdef SLAP_CONTROL_X_WHATFAILED
+ if ( get_whatFailed( op ) ) {
+ char *oids[ 2 ];
+ oids[ 0 ] = (*ctrls)->ldctl_oid;
+ oids[ 1 ] = NULL;
+ slap_ctrl_whatFailed_add( op, rs, oids );
+ }
+#endif
+ /* RFC 4511 allows unavailableCriticalExtension to be
+ * returned when the server is unwilling to perform
+ * an operation extended by a recognized critical
+ * control.
+ */
+ rs->sr_text = "critical control unavailable in context";
+ rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
+ goto done;
+ }
+ break;
+
+ case LDAP_COMPARE_TRUE:
+ break;
+
+ default:
+ /* unreachable */
+ Debug( LDAP_DEBUG_ANY,
+ "backend_check_controls: unable to check control: %s\n",
+ (*ctrls)->ldctl_oid );
+ assert( 0 );
+
+ rs->sr_text = "unable to check control";
+ rs->sr_err = LDAP_OTHER;
+ goto done;
+ }
+ }
+ }
+
+#if 0 /* temporarily removed */
+ /* check should be generalized */
+ if( get_relax(op) && !be_isroot(op)) {
+ rs->sr_text = "requires manager authorization";
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ }
+#endif
+
+done:;
+ return rs->sr_err;
+}
+
+int
+backend_check_restrictions(
+ Operation *op,
+ SlapReply *rs,
+ struct berval *opdata )
+{
+ slap_mask_t restrictops;
+ slap_mask_t requires;
+ slap_mask_t opflag;
+ slap_mask_t exopflag = 0;
+ slap_ssf_set_t ssfs, *ssf;
+ int updateop = 0;
+ int starttls = 0;
+ int session = 0;
+
+ restrictops = frontendDB->be_restrictops;
+ requires = frontendDB->be_requires;
+ ssfs = frontendDB->be_ssf_set;
+ ssf = &ssfs;
+
+ if ( op->o_bd ) {
+ slap_ssf_t *fssf, *bssf;
+ int rc = SLAP_CB_CONTINUE, i;
+
+ if ( op->o_bd->be_chk_controls ) {
+ rc = ( *op->o_bd->be_chk_controls )( op, rs );
+ }
+
+ if ( rc == SLAP_CB_CONTINUE ) {
+ rc = backend_check_controls( op, rs );
+ }
+
+ if ( rc != LDAP_SUCCESS ) {
+ return rs->sr_err;
+ }
+
+ restrictops |= op->o_bd->be_restrictops;
+ requires |= op->o_bd->be_requires;
+ bssf = &op->o_bd->be_ssf_set.sss_ssf;
+ fssf = &ssfs.sss_ssf;
+ for ( i=0; i < (int)(sizeof(ssfs)/sizeof(slap_ssf_t)); i++ ) {
+ if ( bssf[i] ) fssf[i] = bssf[i];
+ }
+ }
+
+ switch( op->o_tag ) {
+ case LDAP_REQ_ADD:
+ opflag = SLAP_RESTRICT_OP_ADD;
+ updateop++;
+ break;
+ case LDAP_REQ_BIND:
+ opflag = SLAP_RESTRICT_OP_BIND;
+ session++;
+ break;
+ case LDAP_REQ_COMPARE:
+ opflag = SLAP_RESTRICT_OP_COMPARE;
+ break;
+ case LDAP_REQ_DELETE:
+ updateop++;
+ opflag = SLAP_RESTRICT_OP_DELETE;
+ break;
+ case LDAP_REQ_EXTENDED:
+ opflag = SLAP_RESTRICT_OP_EXTENDED;
+
+ if( !opdata ) {
+ /* treat unspecified as a modify */
+ opflag = SLAP_RESTRICT_OP_MODIFY;
+ updateop++;
+ break;
+ }
+
+ if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
+ session++;
+ starttls++;
+ exopflag = SLAP_RESTRICT_EXOP_START_TLS;
+ break;
+ }
+
+ if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
+ exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
+ break;
+ }
+
+ if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
+ exopflag = SLAP_RESTRICT_EXOP_CANCEL;
+ break;
+ }
+
+ if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
+ exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
+ updateop++;
+ break;
+ }
+
+ /* treat everything else as a modify */
+ opflag = SLAP_RESTRICT_OP_MODIFY;
+ updateop++;
+ break;
+
+ case LDAP_REQ_MODIFY:
+ updateop++;
+ opflag = SLAP_RESTRICT_OP_MODIFY;
+ break;
+ case LDAP_REQ_RENAME:
+ updateop++;
+ opflag = SLAP_RESTRICT_OP_RENAME;
+ break;
+ case LDAP_REQ_SEARCH:
+ opflag = SLAP_RESTRICT_OP_SEARCH;
+ break;
+ case LDAP_REQ_UNBIND:
+ session++;
+ opflag = 0;
+ break;
+ default:
+ rs->sr_text = "restrict operations internal error";
+ rs->sr_err = LDAP_OTHER;
+ return rs->sr_err;
+ }
+
+ if ( !starttls ) {
+ /* these checks don't apply to StartTLS */
+
+ rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
+ if( op->o_transport_ssf < ssf->sss_transport ) {
+ rs->sr_text = op->o_transport_ssf
+ ? "stronger transport confidentiality required"
+ : "transport confidentiality required";
+ return rs->sr_err;
+ }
+
+ if( op->o_tls_ssf < ssf->sss_tls ) {
+ rs->sr_text = op->o_tls_ssf
+ ? "stronger TLS confidentiality required"
+ : "TLS confidentiality required";
+ return rs->sr_err;
+ }
+
+
+ if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
+ /* simple bind specific check */
+ if( op->o_ssf < ssf->sss_simple_bind ) {
+ rs->sr_text = op->o_ssf
+ ? "stronger confidentiality required"
+ : "confidentiality required";
+ return rs->sr_err;
+ }
+ }
+
+ if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
+ /* these checks don't apply to SASL bind */
+
+ if( op->o_sasl_ssf < ssf->sss_sasl ) {
+ rs->sr_text = op->o_sasl_ssf
+ ? "stronger SASL confidentiality required"
+ : "SASL confidentiality required";
+ return rs->sr_err;
+ }
+
+ if( op->o_ssf < ssf->sss_ssf ) {
+ rs->sr_text = op->o_ssf
+ ? "stronger confidentiality required"
+ : "confidentiality required";
+ return rs->sr_err;
+ }
+ }
+
+ if( updateop ) {
+ if( op->o_transport_ssf < ssf->sss_update_transport ) {
+ rs->sr_text = op->o_transport_ssf
+ ? "stronger transport confidentiality required for update"
+ : "transport confidentiality required for update";
+ return rs->sr_err;
+ }
+
+ if( op->o_tls_ssf < ssf->sss_update_tls ) {
+ rs->sr_text = op->o_tls_ssf
+ ? "stronger TLS confidentiality required for update"
+ : "TLS confidentiality required for update";
+ return rs->sr_err;
+ }
+
+ if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
+ rs->sr_text = op->o_sasl_ssf
+ ? "stronger SASL confidentiality required for update"
+ : "SASL confidentiality required for update";
+ return rs->sr_err;
+ }
+
+ if( op->o_ssf < ssf->sss_update_ssf ) {
+ rs->sr_text = op->o_ssf
+ ? "stronger confidentiality required for update"
+ : "confidentiality required for update";
+ return rs->sr_err;
+ }
+
+ if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
+ BER_BVISEMPTY( &op->o_ndn ) )
+ {
+ rs->sr_text = "modifications require authentication";
+ rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
+ return rs->sr_err;
+ }
+
+#ifdef SLAP_X_LISTENER_MOD
+ if ( op->o_conn->c_listener &&
+ ! ( op->o_conn->c_listener->sl_perms & ( !BER_BVISEMPTY( &op->o_ndn )
+ ? (S_IWUSR|S_IWOTH) : S_IWOTH ) ) )
+ {
+ /* no "w" mode means readonly */
+ rs->sr_text = "modifications not allowed on this listener";
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ return rs->sr_err;
+ }
+#endif /* SLAP_X_LISTENER_MOD */
+ }
+ }
+
+ if ( !session ) {
+ /* these checks don't apply to Bind, StartTLS, or Unbind */
+
+ if( requires & SLAP_REQUIRE_STRONG ) {
+ /* should check mechanism */
+ if( ( op->o_transport_ssf < ssf->sss_transport
+ && op->o_authtype == LDAP_AUTH_SIMPLE )
+ || BER_BVISEMPTY( &op->o_dn ) )
+ {
+ rs->sr_text = "strong(er) authentication required";
+ rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
+ return rs->sr_err;
+ }
+ }
+
+ if( requires & SLAP_REQUIRE_SASL ) {
+ if( op->o_authtype != LDAP_AUTH_SASL || BER_BVISEMPTY( &op->o_dn ) ) {
+ rs->sr_text = "SASL authentication required";
+ rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
+ return rs->sr_err;
+ }
+ }
+
+ if( requires & SLAP_REQUIRE_AUTHC ) {
+ if( BER_BVISEMPTY( &op->o_dn ) ) {
+ rs->sr_text = "authentication required";
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ return rs->sr_err;
+ }
+ }
+
+ if( requires & SLAP_REQUIRE_BIND ) {
+ int version;
+ ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+ version = op->o_conn->c_protocol;
+ ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+
+ if( !version ) {
+ /* no bind has occurred */
+ rs->sr_text = "BIND required";
+ rs->sr_err = LDAP_OPERATIONS_ERROR;
+ return rs->sr_err;
+ }
+ }
+
+ if( requires & SLAP_REQUIRE_LDAP_V3 ) {
+ if( op->o_protocol < LDAP_VERSION3 ) {
+ /* no bind has occurred */
+ rs->sr_text = "operation restricted to LDAPv3 clients";
+ rs->sr_err = LDAP_OPERATIONS_ERROR;
+ return rs->sr_err;
+ }
+ }
+
+#ifdef SLAP_X_LISTENER_MOD
+ if ( !starttls && BER_BVISEMPTY( &op->o_dn ) ) {
+ if ( op->o_conn->c_listener &&
+ !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
+ {
+ /* no "x" mode means bind required */
+ rs->sr_text = "bind required on this listener";
+ rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
+ return rs->sr_err;
+ }
+ }
+
+ if ( !starttls && !updateop ) {
+ if ( op->o_conn->c_listener &&
+ !( op->o_conn->c_listener->sl_perms &
+ ( !BER_BVISEMPTY( &op->o_dn )
+ ? (S_IRUSR|S_IROTH) : S_IROTH )))
+ {
+ /* no "r" mode means no read */
+ rs->sr_text = "read not allowed on this listener";
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ return rs->sr_err;
+ }
+ }
+#endif /* SLAP_X_LISTENER_MOD */
+
+ }
+
+ if( ( restrictops & opflag )
+ || ( exopflag && ( restrictops & exopflag ) )
+ || (( restrictops & SLAP_RESTRICT_READONLY ) && updateop )) {
+ if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
+ rs->sr_text = "read operations restricted";
+ } else if ( restrictops & exopflag ) {
+ rs->sr_text = "extended operation restricted";
+ } else {
+ rs->sr_text = "operation restricted";
+ }
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ return rs->sr_err;
+ }
+
+ rs->sr_err = LDAP_SUCCESS;
+ return rs->sr_err;
+}
+
+int backend_check_referrals( Operation *op, SlapReply *rs )
+{
+ rs->sr_err = LDAP_SUCCESS;
+
+ if( op->o_bd->be_chk_referrals ) {
+ rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
+
+ if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
+ send_ldap_result( op, rs );
+ }
+ }
+
+ return rs->sr_err;
+}
+
+int
+be_entry_get_rw(
+ Operation *op,
+ struct berval *ndn,
+ ObjectClass *oc,
+ AttributeDescription *at,
+ int rw,
+ Entry **e )
+{
+ *e = NULL;
+
+ if ( op->o_bd == NULL ) {
+ return LDAP_NO_SUCH_OBJECT;
+ }
+
+ if ( op->o_bd->be_fetch ) {
+ return op->o_bd->be_fetch( op, ndn, oc, at, rw, e );
+ }
+
+ return LDAP_UNWILLING_TO_PERFORM;
+}
+
+int
+fe_acl_group(
+ Operation *op,
+ Entry *target,
+ struct berval *gr_ndn,
+ struct berval *op_ndn,
+ ObjectClass *group_oc,
+ AttributeDescription *group_at )
+{
+ Entry *e;
+ void *o_priv = op->o_private, *e_priv = NULL;
+ Attribute *a;
+ int rc;
+ GroupAssertion *g;
+ Backend *be = op->o_bd;
+ OpExtra *oex;
+
+ LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) {
+ if ( oex->oe_key == (void *)backend_group )
+ break;
+ }
+
+ if ( oex && ((OpExtraDB *)oex)->oe_db )
+ op->o_bd = ((OpExtraDB *)oex)->oe_db;
+
+ if ( !op->o_bd || !SLAP_DBHIDDEN( op->o_bd ))
+ op->o_bd = select_backend( gr_ndn, 0 );
+
+ for ( g = op->o_groups; g; g = g->ga_next ) {
+ if ( g->ga_be != op->o_bd || g->ga_oc != group_oc ||
+ g->ga_at != group_at || g->ga_len != gr_ndn->bv_len )
+ {
+ continue;
+ }
+ if ( strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0 ) {
+ break;
+ }
+ }
+
+ if ( g ) {
+ rc = g->ga_res;
+ goto done;
+ }
+
+ if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
+ e = target;
+ rc = 0;
+
+ } else {
+ op->o_private = NULL;
+ rc = be_entry_get_rw( op, gr_ndn, group_oc, group_at, 0, &e );
+ e_priv = op->o_private;
+ op->o_private = o_priv;
+ }
+
+ if ( e ) {
+ a = attr_find( e->e_attrs, group_at );
+ if ( a ) {
+ /* If the attribute is a subtype of labeledURI,
+ * treat this as a dynamic group ala groupOfURLs
+ */
+ if ( is_at_subtype( group_at->ad_type,
+ slap_schema.si_ad_labeledURI->ad_type ) )
+ {
+ int i;
+ LDAPURLDesc *ludp;
+ struct berval bv, nbase;
+ Filter *filter;
+ Entry *user = NULL;
+ void *user_priv = NULL;
+ Backend *b2 = op->o_bd;
+
+ if ( target && dn_match( &target->e_nname, op_ndn ) ) {
+ user = target;
+ }
+
+ rc = LDAP_COMPARE_FALSE;
+ for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
+ if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
+ LDAP_URL_SUCCESS )
+ {
+ continue;
+ }
+
+ BER_BVZERO( &nbase );
+
+ /* host, attrs and extensions parts must be empty */
+ if ( ( ludp->lud_host && *ludp->lud_host )
+ || ludp->lud_attrs
+ || ludp->lud_exts )
+ {
+ goto loopit;
+ }
+
+ ber_str2bv( ludp->lud_dn, 0, 0, &bv );
+ if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
+ op->o_tmpmemctx ) != LDAP_SUCCESS )
+ {
+ goto loopit;
+ }
+
+ switch ( ludp->lud_scope ) {
+ case LDAP_SCOPE_BASE:
+ if ( !dn_match( &nbase, op_ndn ) ) {
+ goto loopit;
+ }
+ break;
+ case LDAP_SCOPE_ONELEVEL:
+ dnParent( op_ndn, &bv );
+ if ( !dn_match( &nbase, &bv ) ) {
+ goto loopit;
+ }
+ break;
+ case LDAP_SCOPE_SUBTREE:
+ if ( !dnIsSuffix( op_ndn, &nbase ) ) {
+ goto loopit;
+ }
+ break;
+ case LDAP_SCOPE_SUBORDINATE:
+ if ( dn_match( &nbase, op_ndn ) ||
+ !dnIsSuffix( op_ndn, &nbase ) )
+ {
+ goto loopit;
+ }
+ }
+
+ /* NOTE: this could be NULL
+ * if no filter is provided,
+ * or if filter parsing fails.
+ * In the latter case,
+ * we should give up. */
+ if ( ludp->lud_filter != NULL && *ludp->lud_filter != '\0') {
+ filter = str2filter_x( op, ludp->lud_filter );
+ if ( filter == NULL ) {
+ /* give up... */
+ rc = LDAP_OTHER;
+ goto loopit;
+ }
+
+ /* only get user if required
+ * and not available yet */
+ if ( user == NULL ) {
+ int rc2;
+
+ op->o_bd = select_backend( op_ndn, 0 );
+ op->o_private = NULL;
+ rc2 = be_entry_get_rw( op, op_ndn, NULL, NULL, 0, &user );
+ user_priv = op->o_private;
+ op->o_private = o_priv;
+ if ( rc2 != 0 ) {
+ /* give up... */
+ rc = (rc2 == LDAP_NO_SUCH_OBJECT) ? rc2 : LDAP_OTHER;
+ goto nouser;
+ }
+ }
+
+ if ( test_filter( NULL, user, filter ) ==
+ LDAP_COMPARE_TRUE )
+ {
+ rc = 0;
+ }
+nouser:
+ filter_free_x( op, filter, 1 );
+ }
+loopit:
+ ldap_free_urldesc( ludp );
+ if ( !BER_BVISNULL( &nbase ) ) {
+ op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
+ }
+ if ( rc != LDAP_COMPARE_FALSE ) {
+ break;
+ }
+ }
+
+ if ( user != NULL && user != target ) {
+ op->o_private = user_priv;
+ be_entry_release_r( op, user );
+ op->o_private = o_priv;
+ }
+ op->o_bd = b2;
+
+ } else {
+ rc = attr_valfind( a,
+ SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+ SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+ op_ndn, NULL, op->o_tmpmemctx );
+ if ( rc == LDAP_NO_SUCH_ATTRIBUTE ) {
+ rc = LDAP_COMPARE_FALSE;
+ }
+ }
+
+ } else {
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+ }
+
+ if ( e != target ) {
+ op->o_private = e_priv;
+ be_entry_release_r( op, e );
+ op->o_private = o_priv;
+ }
+
+ } else {
+ rc = LDAP_NO_SUCH_OBJECT;
+ }
+
+ if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
+ g = op->o_tmpalloc( sizeof( GroupAssertion ) + gr_ndn->bv_len,
+ op->o_tmpmemctx );
+ g->ga_be = op->o_bd;
+ g->ga_oc = group_oc;
+ g->ga_at = group_at;
+ g->ga_res = rc;
+ g->ga_len = gr_ndn->bv_len;
+ strcpy( g->ga_ndn, gr_ndn->bv_val );
+ g->ga_next = op->o_groups;
+ op->o_groups = g;
+ }
+
+done:
+ op->o_bd = be;
+ return rc;
+}
+
+int
+backend_group(
+ Operation *op,
+ Entry *target,
+ struct berval *gr_ndn,
+ struct berval *op_ndn,
+ ObjectClass *group_oc,
+ AttributeDescription *group_at )
+{
+ int rc;
+ BackendDB *be_orig;
+ OpExtraDB oex;
+
+ if ( op->o_abandon ) {
+ return SLAPD_ABANDON;
+ }
+
+ oex.oe_db = op->o_bd;
+ oex.oe.oe_key = (void *)backend_group;
+ LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex.oe, oe_next);
+
+ be_orig = op->o_bd;
+ op->o_bd = frontendDB;
+ rc = frontendDB->be_group( op, target, gr_ndn,
+ op_ndn, group_oc, group_at );
+ op->o_bd = be_orig;
+ LDAP_SLIST_REMOVE(&op->o_extra, &oex.oe, OpExtra, oe_next);
+
+ return rc;
+}
+
+int
+fe_acl_attribute(
+ Operation *op,
+ Entry *target,
+ struct berval *edn,
+ AttributeDescription *entry_at,
+ BerVarray *vals,
+ slap_access_t access )
+{
+ Entry *e = NULL;
+ void *o_priv = op->o_private, *e_priv = NULL;
+ Attribute *a = NULL;
+ int freeattr = 0, i, j, rc = LDAP_SUCCESS;
+ AccessControlState acl_state = ACL_STATE_INIT;
+ Backend *be = op->o_bd;
+ OpExtra *oex;
+
+ LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) {
+ if ( oex->oe_key == (void *)backend_attribute )
+ break;
+ }
+
+ if ( oex && ((OpExtraDB *)oex)->oe_db )
+ op->o_bd = ((OpExtraDB *)oex)->oe_db;
+
+ if ( !op->o_bd || !SLAP_DBHIDDEN( op->o_bd ))
+ op->o_bd = select_backend( edn, 0 );
+
+ if ( target && dn_match( &target->e_nname, edn ) ) {
+ e = target;
+
+ } else {
+ op->o_private = NULL;
+ rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
+ e_priv = op->o_private;
+ op->o_private = o_priv;
+ }
+
+ if ( e ) {
+ if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children ) {
+ assert( vals == NULL );
+
+ rc = LDAP_SUCCESS;
+ if ( op->o_conn && access > ACL_NONE &&
+ access_allowed( op, e, entry_at, NULL,
+ access, &acl_state ) == 0 )
+ {
+ rc = LDAP_INSUFFICIENT_ACCESS;
+ }
+ goto freeit;
+ }
+
+ a = attr_find( e->e_attrs, entry_at );
+ if ( a == NULL ) {
+ SlapReply rs = { REP_SEARCH };
+ AttributeName anlist[ 2 ];
+
+ anlist[ 0 ].an_name = entry_at->ad_cname;
+ anlist[ 0 ].an_desc = entry_at;
+ BER_BVZERO( &anlist[ 1 ].an_name );
+ rs.sr_attrs = anlist;
+
+ /* NOTE: backend_operational() is also called
+ * when returning results, so it's supposed
+ * to do no harm to entries */
+ rs.sr_entry = e;
+ rc = backend_operational( op, &rs );
+
+ if ( rc == LDAP_SUCCESS ) {
+ if ( rs.sr_operational_attrs ) {
+ freeattr = 1;
+ a = rs.sr_operational_attrs;
+
+ } else {
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+ }
+ }
+ }
+
+ if ( a ) {
+ BerVarray v;
+
+ if ( op->o_conn && access > ACL_NONE &&
+ access_allowed( op, e, entry_at, NULL,
+ access, &acl_state ) == 0 )
+ {
+ rc = LDAP_INSUFFICIENT_ACCESS;
+ goto freeit;
+ }
+
+ i = a->a_numvals;
+ v = op->o_tmpalloc( sizeof(struct berval) * ( i + 1 ),
+ op->o_tmpmemctx );
+ for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
+ {
+ if ( op->o_conn && access > ACL_NONE &&
+ access_allowed( op, e, entry_at,
+ &a->a_nvals[i],
+ access,
+ &acl_state ) == 0 )
+ {
+ continue;
+ }
+ ber_dupbv_x( &v[j], &a->a_nvals[i],
+ op->o_tmpmemctx );
+ if ( !BER_BVISNULL( &v[j] ) ) {
+ j++;
+ }
+ }
+ if ( j == 0 ) {
+ op->o_tmpfree( v, op->o_tmpmemctx );
+ *vals = NULL;
+ rc = LDAP_INSUFFICIENT_ACCESS;
+
+ } else {
+ BER_BVZERO( &v[j] );
+ *vals = v;
+ rc = LDAP_SUCCESS;
+ }
+ }
+freeit: if ( e != target ) {
+ op->o_private = e_priv;
+ be_entry_release_r( op, e );
+ op->o_private = o_priv;
+ }
+ if ( freeattr ) {
+ attr_free( a );
+ }
+ }
+
+ op->o_bd = be;
+ return rc;
+}
+
+int
+backend_attribute(
+ Operation *op,
+ Entry *target,
+ struct berval *edn,
+ AttributeDescription *entry_at,
+ BerVarray *vals,
+ slap_access_t access )
+{
+ int rc;
+ BackendDB *be_orig;
+ OpExtraDB oex;
+
+ oex.oe_db = op->o_bd;
+ oex.oe.oe_key = (void *)backend_attribute;
+ LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex.oe, oe_next);
+
+ be_orig = op->o_bd;
+ op->o_bd = frontendDB;
+ rc = frontendDB->be_attribute( op, target, edn,
+ entry_at, vals, access );
+ op->o_bd = be_orig;
+ LDAP_SLIST_REMOVE(&op->o_extra, &oex.oe, OpExtra, oe_next);
+
+ return rc;
+}
+
+int
+backend_access(
+ Operation *op,
+ Entry *target,
+ struct berval *edn,
+ AttributeDescription *entry_at,
+ struct berval *nval,
+ slap_access_t access,
+ slap_mask_t *mask )
+{
+ Entry *e = NULL;
+ void *o_priv, *e_priv = NULL;
+ int rc = LDAP_INSUFFICIENT_ACCESS;
+ Backend *be;
+
+ /* pedantic */
+ assert( op != NULL );
+ assert( op->o_conn != NULL );
+ assert( edn != NULL );
+ assert( access > ACL_NONE );
+
+ be = op->o_bd;
+ o_priv = op->o_private;
+
+ if ( !op->o_bd ) {
+ op->o_bd = select_backend( edn, 0 );
+ }
+
+ if ( target && dn_match( &target->e_nname, edn ) ) {
+ e = target;
+
+ } else {
+ op->o_private = NULL;
+ rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
+ e_priv = op->o_private;
+ op->o_private = o_priv;
+ }
+
+ if ( e ) {
+ Attribute *a = NULL;
+ int freeattr = 0;
+
+ if ( entry_at == NULL ) {
+ entry_at = slap_schema.si_ad_entry;
+ }
+
+ if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children )
+ {
+ if ( access_allowed_mask( op, e, entry_at,
+ NULL, access, NULL, mask ) == 0 )
+ {
+ rc = LDAP_INSUFFICIENT_ACCESS;
+
+ } else {
+ rc = LDAP_SUCCESS;
+ }
+
+ } else {
+ a = attr_find( e->e_attrs, entry_at );
+ if ( a == NULL ) {
+ SlapReply rs = { REP_SEARCH };
+ AttributeName anlist[ 2 ];
+
+ anlist[ 0 ].an_name = entry_at->ad_cname;
+ anlist[ 0 ].an_desc = entry_at;
+ BER_BVZERO( &anlist[ 1 ].an_name );
+ rs.sr_attrs = anlist;
+
+ rs.sr_attr_flags = slap_attr_flags( rs.sr_attrs );
+
+ /* NOTE: backend_operational() is also called
+ * when returning results, so it's supposed
+ * to do no harm to entries */
+ rs.sr_entry = e;
+ rc = backend_operational( op, &rs );
+
+ if ( rc == LDAP_SUCCESS ) {
+ if ( rs.sr_operational_attrs ) {
+ freeattr = 1;
+ a = rs.sr_operational_attrs;
+
+ } else {
+ rc = LDAP_NO_SUCH_OBJECT;
+ }
+ }
+ }
+
+ if ( a ) {
+ if ( access_allowed_mask( op, e, entry_at,
+ nval, access, NULL, mask ) == 0 )
+ {
+ rc = LDAP_INSUFFICIENT_ACCESS;
+ goto freeit;
+ }
+ rc = LDAP_SUCCESS;
+ }
+ }
+freeit: if ( e != target ) {
+ op->o_private = e_priv;
+ be_entry_release_r( op, e );
+ op->o_private = o_priv;
+ }
+ if ( freeattr ) {
+ attr_free( a );
+ }
+ }
+
+ op->o_bd = be;
+ return rc;
+}
+
+int
+fe_aux_operational(
+ Operation *op,
+ SlapReply *rs )
+{
+ Attribute **ap;
+ int rc = LDAP_SUCCESS;
+ BackendDB *be_orig = op->o_bd;
+ OpExtra *oex;
+
+ LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) {
+ if ( oex->oe_key == (void *)backend_operational )
+ break;
+ }
+
+ for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
+ /* just count them */ ;
+
+ /*
+ * If operational attributes (allegedly) are required,
+ * and the backend supports specific operational attributes,
+ * add them to the attribute list
+ */
+ if ( !( rs->sr_flags & REP_NO_ENTRYDN )
+ && ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
+ ad_inlist( slap_schema.si_ad_entryDN, rs->sr_attrs ) ) ) )
+ {
+ *ap = slap_operational_entryDN( rs->sr_entry );
+ ap = &(*ap)->a_next;
+ }
+
+ if ( !( rs->sr_flags & REP_NO_SUBSCHEMA)
+ && ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
+ ad_inlist( slap_schema.si_ad_subschemaSubentry, rs->sr_attrs ) ) ) )
+ {
+ *ap = slap_operational_subschemaSubentry( op->o_bd );
+ ap = &(*ap)->a_next;
+ }
+
+ /* Let the overlays have a chance at this */
+ if ( oex && ((OpExtraDB *)oex)->oe_db )
+ op->o_bd = ((OpExtraDB *)oex)->oe_db;
+
+ if ( !op->o_bd || !SLAP_DBHIDDEN( op->o_bd ))
+ op->o_bd = select_backend( &op->o_req_ndn, 0 );
+
+ if ( op->o_bd != NULL && !be_match( op->o_bd, frontendDB ) &&
+ ( SLAP_OPATTRS( rs->sr_attr_flags ) || rs->sr_attrs ) &&
+ op->o_bd->be_operational != NULL )
+ {
+ rc = op->o_bd->be_operational( op, rs );
+ }
+ op->o_bd = be_orig;
+
+ return rc;
+}
+
+int backend_operational( Operation *op, SlapReply *rs )
+{
+ int rc;
+ BackendDB *be_orig;
+ OpExtraDB oex;
+
+ oex.oe_db = op->o_bd;
+ oex.oe.oe_key = (void *)backend_operational;
+ LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex.oe, oe_next);
+
+ /* Moved this into the frontend so global overlays are called */
+
+ be_orig = op->o_bd;
+ op->o_bd = frontendDB;
+ rc = frontendDB->be_operational( op, rs );
+ op->o_bd = be_orig;
+ LDAP_SLIST_REMOVE(&op->o_extra, &oex.oe, OpExtra, oe_next);
+
+ return rc;
+}
+
+/* helper that calls the bi_tool_entry_first_x() variant with default args;
+ * use to initialize a backend's bi_tool_entry_first() when appropriate
+ */
+ID
+backend_tool_entry_first( BackendDB *be )
+{
+ return be->bd_info->bi_tool_entry_first_x( be,
+ NULL, LDAP_SCOPE_DEFAULT, NULL );
+}