]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/backend.c
#include <ac/string.h> to get strcasecmp().
[openldap] / servers / slapd / backend.c
index 7e83933b21f2f0492b086fd3074ae9081951f8d4..d2350bb44b28d73ae082373b78010e235146ff08 100644 (file)
@@ -1,6 +1,6 @@
 /* $OpenLDAP$ */
 /*
- * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
+ * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
  */
 /* backend.c - routines for dealing with back-end databases */
 
 #include <ac/string.h>
 #include <ac/socket.h>
-
 #include <sys/stat.h>
 
 #include "slap.h"
 #include "lutil.h"
+#include "lber_pvt.h"
+
+#include "ldap_rq.h"
 
-#ifdef SLAPD_LDAP
+#ifdef LDAP_SLAPI
+#include "slapi.h"
+#endif
+
+/*
+ * 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.
+ */
+
+#if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
+#include "back-bdb/external.h"
+#endif
+#if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
+#include "back-dnssrv/external.h"
+#endif
+#if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
+#include "back-hdb/external.h"
+#endif
+#if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
 #include "back-ldap/external.h"
 #endif
-#ifdef SLAPD_LDBM
+#if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
 #include "back-ldbm/external.h"
 #endif
-#ifdef SLAPD_BDB2
-#include "back-bdb2/external.h"
+#if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
+#include "back-meta/external.h"
+#endif
+#if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
+#include "back-monitor/external.h"
+#endif
+#if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
+#include "back-null/external.h"
 #endif
-#ifdef SLAPD_PASSWD
+#if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 #include "back-passwd/external.h"
 #endif
-#ifdef SLAPD_PERL
+#if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 #include "back-perl/external.h"
 #endif
-#ifdef SLAPD_SHELL
+#if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 #include "back-shell/external.h"
 #endif
-#ifdef SLAPD_TCL
+#if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 #include "back-tcl/external.h"
 #endif
+#if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
+#include "back-sql/external.h"
+#endif
+#if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
+#include "private/external.h"
+#endif
 
 static BackendInfo binfo[] = {
+#if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
+       {"bdb", bdb_initialize},
+#endif
+#if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
+       {"dnssrv",      dnssrv_back_initialize},
+#endif
+#if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
+       {"hdb", hdb_initialize},
+#endif
 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
        {"ldap",        ldap_back_initialize},
 #endif
 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
        {"ldbm",        ldbm_back_initialize},
 #endif
-#if defined(SLAPD_BDB2) && !defined(SLAPD_BDB2_DYNAMIC)
-       {"bdb2",        bdb2_back_initialize},
+#if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
+       {"meta",        meta_back_initialize},
+#endif
+#if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
+       {"monitor",     monitor_back_initialize},
+#endif
+#if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
+       {"null",        null_back_initialize},
 #endif
 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
        {"passwd",      passwd_back_initialize},
@@ -61,6 +111,13 @@ static BackendInfo binfo[] = {
 #endif
 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
        {"tcl",         tcl_back_initialize},
+#endif
+#if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
+       {"sql",         sql_back_initialize},
+#endif
+       /* for any private backend */
+#if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
+       {"private",     private_back_initialize},
 #endif
        {NULL}
 };
@@ -71,14 +128,28 @@ BackendInfo        *backendInfo = NULL;
 int                    nBackendDB = 0; 
 BackendDB      *backendDB = NULL;
 
+#ifdef LDAP_SYNCREPL
+ldap_pvt_thread_pool_t syncrepl_pool;
+int                    syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
+#endif
+
 int backend_init(void)
 {
        int rc = -1;
 
+#ifdef LDAP_SYNCREPL
+        ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
+#endif
+
        if((nBackendInfo != 0) || (backendInfo != NULL)) {
                /* already initialized */
+#ifdef NEW_LOGGING
+               LDAP_LOG( BACKEND, ERR, 
+                       "backend_init:  backend already initialized\n", 0, 0, 0 );
+#else
                Debug( LDAP_DEBUG_ANY,
                        "backend_init: already initialized.\n", 0, 0, 0 );
+#endif
                return -1;
        }
 
@@ -89,10 +160,15 @@ int backend_init(void)
                rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 
                if(rc != 0) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( BACKEND, INFO, 
+                               "backend_init:  initialized for type \"%s\"\n",
+                               binfo[nBackendInfo].bi_type, 0, 0 );
+#else
                        Debug( LDAP_DEBUG_ANY,
                                "backend_init: initialized for type \"%s\"\n",
-                                       binfo[nBackendInfo].bi_type, 0, 0 );
-
+                               binfo[nBackendInfo].bi_type, 0, 0 );
+#endif
                        /* destroy those we've already inited */
                        for( nBackendInfo--;
                                nBackendInfo >= 0 ;
@@ -115,9 +191,14 @@ int backend_init(void)
 #ifdef SLAPD_MODULES   
        return 0;
 #else
+
+#ifdef NEW_LOGGING
+       LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
+#else
        Debug( LDAP_DEBUG_ANY,
                "backend_init: failed\n",
                0, 0, 0 );
+#endif
 
        return rc;
 #endif /* SLAPD_MODULES */
@@ -128,9 +209,15 @@ int backend_add(BackendInfo *aBackendInfo)
    int rc = 0;
 
    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( BACKEND, ERR, 
+                  "backend_add:  initialization for type \"%s\" failed\n",
+                  aBackendInfo->bi_type, 0, 0 );
+#else
       Debug( LDAP_DEBUG_ANY,
             "backend_add: initialization for type \"%s\" failed\n",
             aBackendInfo->bi_type, 0, 0 );
+#endif
       return rc;
    }
 
@@ -141,13 +228,13 @@ int backend_add(BackendInfo *aBackendInfo)
       /* if backendInfo == binfo no deallocation of old backendInfo */
       if (backendInfo == binfo) {
         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
-        memcpy(newBackendInfo, backendInfo, sizeof(BackendInfo) * 
+        AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) * 
                nBackendInfo);
       } else {
         newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) * 
                                     (nBackendInfo + 1));
       }
-      memcpy(&newBackendInfo[nBackendInfo], aBackendInfo, 
+      AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo, 
             sizeof(BackendInfo));
       backendInfo = newBackendInfo;
       nBackendInfo++;
@@ -161,40 +248,62 @@ int backend_startup(Backend *be)
        int i;
        int rc = 0;
 
+#ifdef LDAP_SYNCREPL
+       init_syncrepl();
+#endif
+
        if( ! ( nBackendDB > 0 ) ) {
                /* no databases */
+#ifdef NEW_LOGGING
+               LDAP_LOG( BACKEND, INFO, 
+                       "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
+#else
                Debug( LDAP_DEBUG_ANY,
                        "backend_startup: %d databases to startup.\n",
                        nBackendDB, 0, 0 );
+#endif
                return 1;
        }
 
        if(be != NULL) {
                /* startup a specific backend database */
+#ifdef NEW_LOGGING
+               LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
+                          be->be_suffix[0].bv_val, 0, 0 );
+#else
                Debug( LDAP_DEBUG_TRACE,
-                       "backend_startup: starting database\n",
-                       0, 0, 0 );
+                       "backend_startup: starting \"%s\"\n",
+                       be->be_suffix[0].bv_val, 0, 0 );
+#endif
 
                if ( be->bd_info->bi_open ) {
                        rc = be->bd_info->bi_open( be->bd_info );
-               }
+                       if ( rc != 0 ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                       "backend_startup: bi_open failed!\n",
+                                       0, 0, 0 );
+#endif
 
-               if(rc != 0) {
-                       Debug( LDAP_DEBUG_ANY,
-                               "backend_startup: bi_open failed!\n",
-                               0, 0, 0 );
-                       return rc;
+                               return rc;
+                       }
                }
 
                if ( be->bd_info->bi_db_open ) {
                        rc = be->bd_info->bi_db_open( be );
-               }
-
-               if(rc != 0) {
-                       Debug( LDAP_DEBUG_ANY,
-                               "backend_startup: bi_db_open failed!\n",
-                               0, 0, 0 );
-                       return rc;
+                       if ( rc != 0 ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG( BACKEND, CRIT, 
+                                       "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                       "backend_startup: bi_db_open failed! (%d)\n",
+                                       rc, 0, 0 );
+#endif
+                               return rc;
+                       }
                }
 
                return rc;
@@ -210,16 +319,26 @@ int backend_startup(Backend *be)
                if( backendInfo[i].bi_open ) {
                        rc = backendInfo[i].bi_open(
                                &backendInfo[i] );
-               }
-
-               if(rc != 0) {
-                       Debug( LDAP_DEBUG_ANY,
-                               "backend_startup: bi_open %d failed!\n",
-                               i, 0, 0 );
-                       return rc;
+                       if ( rc != 0 ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG( BACKEND, CRIT, 
+                                       "backend_startup: bi_open %d failed!\n", i, 0, 0 );
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                       "backend_startup: bi_open %d failed!\n",
+                                       i, 0, 0 );
+#endif
+                               return rc;
+                       }
                }
        }
 
+#ifdef LDAP_SYNCREPL
+       ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
+       LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
+       LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
+#endif
+
        /* open each backend database */
        for( i = 0; i < nBackendDB; i++ ) {
                /* append global access controls */
@@ -228,14 +347,28 @@ int backend_startup(Backend *be)
                if ( backendDB[i].bd_info->bi_db_open ) {
                        rc = backendDB[i].bd_info->bi_db_open(
                                &backendDB[i] );
+                       if ( rc != 0 ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG( BACKEND, CRIT, 
+                                       "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                       "backend_startup: bi_db_open(%d) failed! (%d)\n",
+                                       i, rc, 0 );
+#endif
+                               return rc;
+                       }
                }
 
-               if(rc != 0) {
-                       Debug( LDAP_DEBUG_ANY,
-                               "backend_startup: bi_db_open %d failed!\n",
-                               i, 0, 0 );
-                       return rc;
+#ifdef LDAP_SYNCREPL
+               if ( backendDB[i].syncinfo != NULL ) {
+                       syncinfo_t *si = ( syncinfo_t * ) backendDB[i].syncinfo;
+                       ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
+                       ldap_pvt_runqueue_insert( &syncrepl_rq, si->interval,
+                                                       do_syncrepl, (void *) &backendDB[i] );
+                       ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
                }
+#endif
        }
 
        return rc;
@@ -285,9 +418,15 @@ int backend_shutdown( Backend *be )
                }
 
                if(rc != 0) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( BACKEND, NOTICE, 
+                               "backend_shutdown: bi_close %s failed!\n",
+                               backendDB[i].be_type, 0, 0 );
+#else
                        Debug( LDAP_DEBUG_ANY,
                                "backend_close: bi_close %s failed!\n",
                                backendDB[i].be_type, 0, 0 );
+#endif
                }
        }
 
@@ -310,14 +449,25 @@ int backend_shutdown( Backend *be )
 int backend_destroy(void)
 {
        int i;
+       BackendDB *bd;
+
+#ifdef LDAP_SYNCREPL
+        ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
+#endif
 
        /* destroy each backend database */
-       for( i = 0; i < nBackendDB; i++ ) {
-               if ( backendDB[i].bd_info->bi_db_destroy ) {
-                       backendDB[i].bd_info->bi_db_destroy(
-                               &backendDB[i] );
+       for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
+               if ( bd->bd_info->bi_db_destroy ) {
+                       bd->bd_info->bi_db_destroy( bd );
                }
+               ber_bvarray_free( bd->be_suffix );
+               ber_bvarray_free( bd->be_nsuffix );
+               if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
+               if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
+               if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
+               acl_destroy( bd->be_acl, global_acl );
        }
+       free( backendDB );
 
        /* destroy each backend type */
        for( i = 0; i < nBackendInfo; i++ ) {
@@ -377,16 +527,20 @@ backend_db_init(
        be = &backends[nbackends++];
 
        be->bd_info = bi;
-       be->be_sizelimit = defsize;
-       be->be_timelimit = deftime;
+       be->be_def_limit = deflimit;
        be->be_dfltaccess = global_default_access;
 
+       be->be_restrictops = global_restrictops;
+       be->be_requires = global_requires;
+       be->be_ssf_set = global_ssf_set;
+
+#ifdef LDAP_SYNCREPL
+        be->syncinfo = NULL;
+#endif
+
        /* assign a default depth limit for alias deref */
        be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH; 
 
-       be->be_realm = global_realm != NULL
-               ? ch_strdup( global_realm ) : NULL;
-
        if(bi->bi_db_init) {
                rc = bi->bi_db_init( be );
        }
@@ -414,55 +568,72 @@ be_db_close( void )
 }
 
 Backend *
-select_backend( const char * dn )
+select_backend(
+       struct berval * dn,
+       int manageDSAit,
+       int noSubs )
 {
-       int     i, j, len, dnlen;
+       int     i, j;
+       ber_len_t len, dnlen = dn->bv_len;
+       Backend *be = NULL;
 
-       dnlen = strlen( dn );
        for ( i = 0; i < nbackends; i++ ) {
                for ( j = 0; backends[i].be_nsuffix != NULL &&
-                   backends[i].be_nsuffix[j] != NULL; j++ )
+                   backends[i].be_nsuffix[j].bv_val != NULL; j++ )
                {
-                       len = strlen( backends[i].be_nsuffix[j] );
+                       if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
+                               && noSubs )
+                       {
+                               continue;
+                       }
+
+                       len = backends[i].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( backends[i].be_nsuffix[j],
-                           dn + (dnlen - len) ) == 0 ) {
-                               return( &backends[i] );
+                       if ( strcmp( backends[i].be_nsuffix[j].bv_val,
+                               &dn->bv_val[dnlen-len] ) == 0 )
+                       {
+                               if( be == NULL ) {
+                                       be = &backends[i];
+
+                                       if( manageDSAit && len == dnlen ) {
+                                               continue;
+                                       }
+                               } else {
+                                       be = &backends[i];
+                               }
+                               return be;
                        }
                }
        }
 
-#ifdef LDAP_ALLOW_NULL_SEARCH_BASE
-       /* Add greg@greg.rim.or.jp
-        * It's quick hack for cheap client
-        * Some browser offer a NULL base at ldap_search
-        *
-        * Should only be used as a last resort. -Kdz
-        */
-       if(dnlen == 0) {
-               Debug( LDAP_DEBUG_TRACE,
-                       "select_backend: use default backend\n", 0, 0, 0 );
-               return( &backends[0] );
-       }
-#endif /* LDAP_ALLOW_NULL_SEARCH_BASE */
-
-       return( NULL );
+       return be;
 }
 
 int
 be_issuffix(
     Backend    *be,
-    const char *suffix
+    struct berval      *bvsuffix
 )
 {
        int     i;
 
-       for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i] != NULL; i++ ) {
-               if ( strcmp( be->be_nsuffix[i], suffix ) == 0 ) {
+       for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
+               if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
                        return( 1 );
                }
        }
@@ -471,57 +642,81 @@ be_issuffix(
 }
 
 int
-be_isroot( Backend *be, const char *ndn )
+be_isroot( Backend *be, struct berval *ndn )
 {
-       int rc;
-
-       if ( ndn == NULL || be->be_root_ndn == NULL ) {
+       if ( !ndn->bv_len ) {
                return( 0 );
        }
 
-       rc = strcmp( be->be_root_ndn, ndn ) ? 0 : 1;
+       if ( !be->be_rootndn.bv_len ) {
+               return( 0 );
+       }
 
-       return(rc);
+       return dn_match( &be->be_rootndn, ndn );
 }
 
-char *
-be_root_dn( Backend *be )
+int
+be_isupdate( Backend *be, struct berval *ndn )
 {
-       if ( be->be_root_dn == NULL ) {
-               return( "" );
+       if ( !ndn->bv_len ) {
+               return( 0 );
        }
 
-       return be->be_root_dn;
+       if ( !be->be_update_ndn.bv_len ) {
+               return( 0 );
+       }
+
+       return dn_match( &be->be_update_ndn, ndn );
+}
+
+struct berval *
+be_root_dn( Backend *be )
+{
+       return &be->be_rootdn;
 }
 
 int
-be_isroot_pw( Backend *be, const char *ndn, struct berval *cred )
+be_isroot_pw( Operation *op )
 {
        int result;
+       char *errmsg;
 
-       if ( ! be_isroot( be, ndn ) ) {
-               return( 0 );
+       if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
+               return 0;
+       }
+
+       if( op->o_bd->be_rootpw.bv_len == 0 ) {
+               return 0;
        }
 
-#ifdef SLAPD_CRYPT
-       ldap_pvt_thread_mutex_lock( &crypt_mutex );
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+       ldap_pvt_thread_mutex_lock( &passwd_mutex );
+#ifdef SLAPD_SPASSWD
+       lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
+#endif
 #endif
 
-       result = lutil_passwd( cred->bv_val, be->be_root_pw, NULL );
+       result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 
-#ifdef SLAPD_CRYPT
-       ldap_pvt_thread_mutex_unlock( &crypt_mutex );
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+#ifdef SLAPD_SPASSWD
+       lutil_passwd_sasl_conn = NULL;
+#endif
+       ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 #endif
 
        return result == 0;
 }
 
 int
-be_entry_release_rw( Backend *be, Entry *e, int rw )
+be_entry_release_rw(
+       Operation *op,
+       Entry *e,
+       int rw )
 {
-       if ( be->be_release ) {
+       if ( op->o_bd->be_release ) {
                /* free and release entry from backend */
-               return be->be_release( be, e, rw );
+               return op->o_bd->be_release( op, e, rw );
        } else {
                /* free entry */
                entry_free( e );
@@ -530,17 +725,54 @@ be_entry_release_rw( Backend *be, Entry *e, int rw )
 }
 
 int
-backend_unbind(
-       Connection   *conn,
-       Operation    *op
-)
+backend_unbind( Operation *op, SlapReply *rs )
 {
-       int     i;
+       int             i;
+#if defined( LDAP_SLAPI )
+       Slapi_PBlock *pb = op->o_pb;
+
+       int     rc;
+       slapi_x_pblock_set_operation( pb, op );
+#endif /* defined( LDAP_SLAPI ) */
 
        for ( i = 0; i < nbackends; i++ ) {
+#if defined( LDAP_SLAPI )
+               slapi_pblock_set( pb, SLAPI_BACKEND, (void *)&backends[i] );
+               rc = doPluginFNs( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
+                               (Slapi_PBlock *)pb );
+               if ( rc < 0 ) {
+                       /*
+                        * A preoperation plugin failure will abort the
+                        * entire operation.
+                        */
+#ifdef NEW_LOGGING
+                       LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
+                                       "failed\n", 0, 0, 0);
+#else
+                       Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
+                                       "failed.\n", 0, 0, 0);
+#endif
+                       return 0;
+               }
+#endif /* defined( LDAP_SLAPI ) */
+
                if ( backends[i].be_unbind ) {
-                       (*backends[i].be_unbind)( &backends[i], conn, op );
+                       op->o_bd = &backends[i];
+                       (*backends[i].be_unbind)( op, rs );
                }
+
+#if defined( LDAP_SLAPI )
+               if ( doPluginFNs( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
+                               (Slapi_PBlock *)pb ) < 0 ) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
+                                       "failed\n", 0, 0, 0);
+#else
+                       Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
+                                       "failed.\n", 0, 0, 0);
+#endif
+               }
+#endif /* defined( LDAP_SLAPI ) */
        }
 
        return 0;
@@ -578,38 +810,501 @@ backend_connection_destroy(
        return 0;
 }
 
+static int
+backend_check_controls(
+       Operation *op,
+       SlapReply *rs )
+{
+       LDAPControl **ctrls = op->o_ctrls;
+       rs->sr_err = LDAP_SUCCESS;
+
+       if( ctrls ) {
+               for( ; *ctrls != NULL ; ctrls++ ) {
+                       if( (*ctrls)->ldctl_iscritical &&
+                               !ldap_charray_inlist( op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
+                       {
+                               rs->sr_text = "control unavailable in context";
+                               rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
+                               break;
+                       }
+               }
+       }
+
+       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_ssf_set_t *ssf;
+       int updateop = 0;
+       int starttls = 0;
+       int session = 0;
+
+       if( op->o_bd ) {
+               if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
+                       return rs->sr_err;
+               }
+
+               restrictops = op->o_bd->be_restrictops;
+               requires = op->o_bd->be_requires;
+               ssf = &op->o_bd->be_ssf_set;
+
+       } else {
+               restrictops = global_restrictops;
+               requires = global_requires;
+               ssf = &global_ssf_set;
+       }
+
+       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++;
+                               break;
+                       }
+               }
+
+               {
+                       if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
+                               break;
+                       }
+               }
+
+#ifdef LDAP_EXOP_X_CANCEL
+               {
+                       if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
+                               break;
+                       }
+               }
+#endif
+
+               /* 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 = "transport confidentiality required";
+                       return rs->sr_err;
+               }
+
+               if( op->o_tls_ssf < ssf->sss_tls ) {
+                       rs->sr_text = "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 = "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 = "SASL confidentiality required";
+                               return rs->sr_err;
+                       }
+
+                       if( op->o_ssf < ssf->sss_ssf ) {
+                               rs->sr_text = "confidentiality required";
+                               return rs->sr_err;
+                       }
+               }
+
+               if( updateop ) {
+                       if( op->o_transport_ssf < ssf->sss_update_transport ) {
+                               rs->sr_text = "transport update confidentiality required";
+                               return rs->sr_err;
+                       }
+
+                       if( op->o_tls_ssf < ssf->sss_update_tls ) {
+                               rs->sr_text = "TLS update confidentiality required";
+                               return rs->sr_err;
+                       }
+
+                       if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
+                               rs->sr_text = "SASL update confidentiality required";
+                               return rs->sr_err;
+                       }
+
+                       if( op->o_ssf < ssf->sss_update_ssf ) {
+                               rs->sr_text = "update confidentiality required";
+                               return rs->sr_err;
+                       }
+
+                       if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
+                               op->o_ndn.bv_len == 0 )
+                       {
+                               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 & ( op->o_ndn.bv_len > 0 ? S_IWUSR : 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_authmech.bv_len == 0 ) || op->o_dn.bv_len == 0 )
+                       {
+                               rs->sr_text = "strong authentication required";
+                               rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
+                               return rs->sr_err;
+                       }
+               }
+
+               if( requires & SLAP_REQUIRE_SASL ) {
+                       if( op->o_authmech.bv_len == 0 || op->o_dn.bv_len == 0 ) {
+                               rs->sr_text = "SASL authentication required";
+                               rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
+                               return rs->sr_err;
+                       }
+               }
+                       
+               if( requires & SLAP_REQUIRE_AUTHC ) {
+                       if( op->o_dn.bv_len == 0 ) {
+                               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 && op->o_dn.bv_len == 0 ) {
+                       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 & ( op->o_dn.bv_len > 0 ? S_IRUSR : 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 ) {
+               if( restrictops == SLAP_RESTRICT_OP_READS ) {
+                       rs->sr_text = "read operations 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 )
+{
+       Backend *be = op->o_bd;
+       int rc;
+
+       *e = NULL;
+
+       op->o_bd = select_backend( ndn, 0, 0 );
+
+       if (op->o_bd == NULL) {
+               rc = LDAP_NO_SUCH_OBJECT;
+       } else if ( op->o_bd->be_fetch ) {
+               rc = ( op->o_bd->be_fetch )( op, ndn,
+                       oc, at, rw, e );
+       } else {
+               rc = LDAP_UNWILLING_TO_PERFORM;
+       }
+       op->o_bd = be;
+       return rc;
+}
+
 int 
 backend_group(
-       Backend *be,
+       Operation *op,
        Entry   *target,
-       const char      *gr_ndn,
-       const char      *op_ndn,
-       const char      *objectclassValue,
-       const char      *groupattrName
+       struct berval *gr_ndn,
+       struct berval *op_ndn,
+       ObjectClass *group_oc,
+       AttributeDescription *group_at
 )
 {
-       if (be->be_group)
-               return( be->be_group(be, target, gr_ndn, op_ndn,
-                       objectclassValue, groupattrName) );
-       else
-               return(1);
+       Entry *e;
+       Attribute *a;
+       int rc;
+       GroupAssertion *g;
+
+       if ( op->o_abandon ) return SLAPD_ABANDON;
+
+       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+
+       for (g = op->o_conn->c_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;
+       }
+
+       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+
+       if (g) {
+               return g->ga_res;
+       }
+
+       if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
+               e = target;
+       } else {
+               rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
+       }
+       if ( e ) {
+               a = attr_find( e->e_attrs, group_at );
+               if ( a ) {
+                       rc = value_find_ex( group_at,
+                               SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+                               SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+                               a->a_nvals, op_ndn, op->o_tmpmemctx );
+               } else {
+                       rc = LDAP_NO_SUCH_ATTRIBUTE;
+               }
+               if (e != target ) {
+                       be_entry_release_r( op, e );
+               }
+       } else {
+               rc = LDAP_NO_SUCH_OBJECT;
+       }
+
+       if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
+               g = ch_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len);
+               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);
+               ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+               g->ga_next = op->o_conn->c_groups;
+               op->o_conn->c_groups = g;
+               ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+       }
+
+       return rc;
 }
 
-#ifdef SLAPD_SCHEMA_DN
-Attribute *backend_subschemasubentry( Backend *be )
+int 
+backend_attribute(
+       Operation *op,
+       Entry   *target,
+       struct berval   *edn,
+       AttributeDescription *entry_at,
+       BerVarray *vals
+)
 {
-       /* should be backend specific */
-       static struct berval ss_val = {
-               sizeof(SLAPD_SCHEMA_DN)-1,
-               SLAPD_SCHEMA_DN };
-       static struct berval *ss_vals[2] = { &ss_val, NULL };
-       static Attribute ss_attr = {
-               "subschemasubentry",
-               ss_vals,
-               SYNTAX_DN | SYNTAX_CIS,
-               NULL
-       };
-
-       return &ss_attr;
+       Entry *e;
+       Attribute *a;
+       int i, j, rc = LDAP_SUCCESS;
+       AccessControlState acl_state = ACL_STATE_INIT;
+
+       if ( target && dn_match( &target->e_nname, edn ) ) {
+               e = target;
+       } else {
+               rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
+               if ( rc != LDAP_SUCCESS ) return rc;
+       } 
+
+       if ( e ) {
+               a = attr_find( e->e_attrs, entry_at );
+               if ( a ) {
+                       BerVarray v;
+
+                       if ( op->o_conn && access_allowed( op,
+                               e, entry_at, NULL, ACL_AUTH,
+                               &acl_state ) == 0 ) {
+                               rc = LDAP_INSUFFICIENT_ACCESS;
+                               goto freeit;
+                       }
+
+                       for ( i=0; a->a_vals[i].bv_val; i++ ) ;
+                       
+                       v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
+                       for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
+                               if ( op->o_conn && access_allowed( op,
+                                       e, entry_at,
+                                       &a->a_nvals[i],
+                                       ACL_AUTH, &acl_state ) == 0 ) {
+                                       continue;
+                               }
+                               ber_dupbv_x( &v[j],
+                                       &a->a_nvals[i], op->o_tmpmemctx );
+                               if (v[j].bv_val ) j++;
+                       }
+                       if (j == 0) {
+                               op->o_tmpfree( v, op->o_tmpmemctx );
+                               *vals = NULL;
+                               rc = LDAP_INSUFFICIENT_ACCESS;
+                       } else {
+                               v[j].bv_val = NULL;
+                               v[j].bv_len = 0;
+                               *vals = v;
+                               rc = LDAP_SUCCESS;
+                       }
+               }
+freeit:                if (e != target ) {
+                       be_entry_release_r( op, e );
+               }
+       }
+
+       return rc;
 }
-#endif
+
+Attribute *backend_operational(
+       Operation *op,
+       SlapReply *rs,
+       int opattrs     )
+{
+       Attribute *a = NULL, **ap = &a;
+
+       /*
+        * If operational attributes (allegedly) are required, 
+        * and the backend supports specific operational attributes, 
+        * add them to the attribute list
+        */
+       if ( opattrs || ( op->ors_attrs &&
+               ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
+               *ap = slap_operational_subschemaSubentry( op->o_bd );
+               ap = &(*ap)->a_next;
+       }
+
+       if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
+               ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
+       }
+
+       return a;
+}
+