git.sur5r.net Git - openldap/blob - servers/slapd/backend.c

   1 /* backend.c - routines for dealing with back-end databases */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31
  32 #include <ac/string.h>
  33 #include <ac/socket.h>
  34 #include <sys/stat.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38 #include "lber_pvt.h"
  39
  40 #include "ldap_rq.h"
  41
  42 #ifdef LDAP_SLAPI
  43 #include "slapi/slapi.h"
  44 #endif
  45
  46 /*
  47  * If a module is configured as dynamic, its header should not
  48  * get included into slapd. While this is a general rule and does
  49  * not have much of an effect in UNIX, this rule should be adhered
  50  * to for Windows, where dynamic object code should not be implicitly
  51  * imported into slapd without appropriate __declspec(dllimport) directives.
  52  */
  53
  54 #if SLAPD_BDB == SLAPD_MOD_STATIC
  55 #include "back-bdb/external.h"
  56 #endif
  57 #if SLAPD_DNSSRV == SLAPD_MOD_STATIC
  58 #include "back-dnssrv/external.h"
  59 #endif
  60 #if SLAPD_HDB == SLAPD_MOD_STATIC
  61 #include "back-hdb/external.h"
  62 #endif
  63 #if SLAPD_LDAP == SLAPD_MOD_STATIC
  64 #include "back-ldap/external.h"
  65 #endif
  66 #if SLAPD_LDBM == SLAPD_MOD_STATIC
  67 #include "back-ldbm/external.h"
  68 #endif
  69 #if SLAPD_META == SLAPD_MOD_STATIC
  70 #include "back-meta/external.h"
  71 #endif
  72 #if SLAPD_MONITOR == SLAPD_MOD_STATIC
  73 #include "back-monitor/external.h"
  74 #endif
  75 #if SLAPD_NULL == SLAPD_MOD_STATIC
  76 #include "back-null/external.h"
  77 #endif
  78 #if SLAPD_PASSWD == SLAPD_MOD_STATIC
  79 #include "back-passwd/external.h"
  80 #endif
  81 #if SLAPD_PERL == SLAPD_MOD_STATIC
  82 #include "back-perl/external.h"
  83 #endif
  84 #if SLAPD_RELAY == SLAPD_MOD_STATIC
  85 #include "back-relay/external.h"
  86 #endif
  87 #if SLAPD_SHELL == SLAPD_MOD_STATIC
  88 #include "back-shell/external.h"
  89 #endif
  90 #if SLAPD_TCL == SLAPD_MOD_STATIC
  91 #include "back-tcl/external.h"
  92 #endif
  93 #if SLAPD_SQL == SLAPD_MOD_STATIC
  94 #include "back-sql/external.h"
  95 #endif
  96 #if SLAPD_PRIVATE == SLAPD_MOD_STATIC
  97 #include "private/external.h"
  98 #endif
  99
 100 static BackendInfo binfo[] = {
 101 #if SLAPD_BDB == SLAPD_MOD_STATIC
 102         {"bdb", bdb_initialize},
 103 #endif
 104 #if SLAPD_DNSSRV == SLAPD_MOD_STATIC
 105         {"dnssrv",      dnssrv_back_initialize},
 106 #endif
 107 #if SLAPD_HDB == SLAPD_MOD_STATIC
 108         {"hdb", hdb_initialize},
 109 #endif
 110 #if SLAPD_LDAP == SLAPD_MOD_STATIC
 111         {"ldap",        ldap_back_initialize},
 112 #endif
 113 #if SLAPD_LDBM == SLAPD_MOD_STATIC
 114         {"ldbm",        ldbm_back_initialize},
 115 #endif
 116 #if SLAPD_META == SLAPD_MOD_STATIC
 117         {"meta",        meta_back_initialize},
 118 #endif
 119 #if SLAPD_MONITOR == SLAPD_MOD_STATIC
 120         {"monitor",     monitor_back_initialize},
 121 #endif
 122 #if SLAPD_NULL == SLAPD_MOD_STATIC
 123         {"null",        null_back_initialize},
 124 #endif
 125 #if SLAPD_PASSWD == SLAPD_MOD_STATIC
 126         {"passwd",      passwd_back_initialize},
 127 #endif
 128 #if SLAPD_PERL == SLAPD_MOD_STATIC
 129         {"perl",        perl_back_initialize},
 130 #endif
 131 #if SLAPD_RELAY == SLAPD_MOD_STATIC
 132         {"relay",       relay_back_initialize},
 133 #endif
 134 #if SLAPD_SHELL == SLAPD_MOD_STATIC
 135         {"shell",       shell_back_initialize},
 136 #endif
 137 #if SLAPD_TCL == SLAPD_MOD_STATIC
 138         {"tcl",         tcl_back_initialize},
 139 #endif
 140 #if SLAPD_SQL == SLAPD_MOD_STATIC
 141         {"sql",         sql_back_initialize},
 142 #endif
 143         /* for any private backend */
 144 #if SLAPD_PRIVATE == SLAPD_MOD_STATIC
 145         {"private",     private_back_initialize},
 146 #endif
 147         {NULL}
 148 };
 149
 150 int                     nBackendInfo = 0;
 151 BackendInfo     *backendInfo = NULL;
 152
 153 int                     nBackendDB = 0;
 154 BackendDB       *backendDB = NULL;
 155
 156 ldap_pvt_thread_pool_t  syncrepl_pool;
 157 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 158
 159 int backend_init(void)
 160 {
 161         int rc = -1;
 162
 163         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 164
 165         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 166                 /* already initialized */
 167 #ifdef NEW_LOGGING
 168                 LDAP_LOG( BACKEND, ERR,
 169                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 170 #else
 171                 Debug( LDAP_DEBUG_ANY,
 172                         "backend_init: already initialized.\n", 0, 0, 0 );
 173 #endif
 174                 return -1;
 175         }
 176
 177         for( ;
 178                 binfo[nBackendInfo].bi_type != NULL;
 179                 nBackendInfo++ )
 180         {
 181                 assert( binfo[nBackendInfo].bi_init );
 182
 183                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 184
 185                 if(rc != 0) {
 186 #ifdef NEW_LOGGING
 187                         LDAP_LOG( BACKEND, INFO,
 188                                 "backend_init:  initialized for type \"%s\"\n",
 189                                 binfo[nBackendInfo].bi_type, 0, 0 );
 190 #else
 191                         Debug( LDAP_DEBUG_ANY,
 192                                 "backend_init: initialized for type \"%s\"\n",
 193                                 binfo[nBackendInfo].bi_type, 0, 0 );
 194 #endif
 195                         /* destroy those we've already inited */
 196                         for( nBackendInfo--;
 197                                 nBackendInfo >= 0 ;
 198                                 nBackendInfo-- )
 199                         {
 200                                 if ( binfo[nBackendInfo].bi_destroy ) {
 201                                         binfo[nBackendInfo].bi_destroy(
 202                                                 &binfo[nBackendInfo] );
 203                                 }
 204                         }
 205                         return rc;
 206                 }
 207         }
 208
 209         if ( nBackendInfo > 0) {
 210                 backendInfo = binfo;
 211                 return 0;
 212         }
 213
 214 #ifdef SLAPD_MODULES
 215         return 0;
 216 #else
 217
 218 #ifdef NEW_LOGGING
 219         LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
 220 #else
 221         Debug( LDAP_DEBUG_ANY,
 222                 "backend_init: failed\n",
 223                 0, 0, 0 );
 224 #endif
 225
 226         return rc;
 227 #endif /* SLAPD_MODULES */
 228 }
 229
 230 int backend_add(BackendInfo *aBackendInfo)
 231 {
 232    int rc = 0;
 233
 234    if ( aBackendInfo->bi_init == NULL ) {
 235 #ifdef NEW_LOGGING
 236         LDAP_LOG( BACKEND, ERR,
 237                   "backend_add:  backend type \"%s\" does not have the "
 238                   "(mandatory)init function\n",
 239                   aBackendInfo->bi_type, 0, 0 );
 240 #else
 241       Debug( LDAP_DEBUG_ANY,
 242                   "backend_add:  backend type \"%s\" does not have the "
 243                   "(mandatory)init function\n",
 244                   aBackendInfo->bi_type, 0, 0 );
 245 #endif
 246       return -1;
 247    }
 248
 249    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 250 #ifdef NEW_LOGGING
 251         LDAP_LOG( BACKEND, ERR,
 252                   "backend_add:  initialization for type \"%s\" failed\n",
 253                   aBackendInfo->bi_type, 0, 0 );
 254 #else
 255       Debug( LDAP_DEBUG_ANY,
 256              "backend_add: initialization for type \"%s\" failed\n",
 257              aBackendInfo->bi_type, 0, 0 );
 258 #endif
 259       return rc;
 260    }
 261
 262    /* now add the backend type to the Backend Info List */
 263    {
 264       BackendInfo *newBackendInfo = 0;
 265
 266       /* if backendInfo == binfo no deallocation of old backendInfo */
 267       if (backendInfo == binfo) {
 268          newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 269          AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
 270                 nBackendInfo);
 271       } else {
 272          newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
 273                                      (nBackendInfo + 1));
 274       }
 275       AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 276              sizeof(BackendInfo));
 277       backendInfo = newBackendInfo;
 278       nBackendInfo++;
 279
 280       return 0;
 281    }
 282 }
 283
 284 int backend_startup(Backend *be)
 285 {
 286         int i;
 287         int rc = 0;
 288
 289         if( ! ( nBackendDB > 0 ) ) {
 290                 /* no databases */
 291 #ifdef NEW_LOGGING
 292                 LDAP_LOG( BACKEND, INFO,
 293                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 294 #else
 295                 Debug( LDAP_DEBUG_ANY,
 296                         "backend_startup: %d databases to startup.\n",
 297                         nBackendDB, 0, 0 );
 298 #endif
 299                 return 1;
 300         }
 301
 302         if(be != NULL) {
 303                 /* startup a specific backend database */
 304
 305                 be->be_pending_csn_list = (struct be_pcl *)
 306                                                                 ch_calloc( 1, sizeof( struct be_pcl ));
 307                 LDAP_TAILQ_INIT( be->be_pending_csn_list );
 308
 309 #ifdef NEW_LOGGING
 310                 LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 311                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 312                         0, 0 );
 313 #else
 314                 Debug( LDAP_DEBUG_TRACE,
 315                         "backend_startup: starting \"%s\"\n",
 316                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 317                         0, 0 );
 318 #endif
 319
 320                 if ( be->bd_info->bi_open ) {
 321                         rc = be->bd_info->bi_open( be->bd_info );
 322                         if ( rc != 0 ) {
 323 #ifdef NEW_LOGGING
 324                                 LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
 325 #else
 326                                 Debug( LDAP_DEBUG_ANY,
 327                                         "backend_startup: bi_open failed!\n",
 328                                         0, 0, 0 );
 329 #endif
 330
 331                                 return rc;
 332                         }
 333                 }
 334
 335                 if ( be->bd_info->bi_db_open ) {
 336                         rc = be->bd_info->bi_db_open( be );
 337                         if ( rc != 0 ) {
 338 #ifdef NEW_LOGGING
 339                                 LDAP_LOG( BACKEND, CRIT,
 340                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 341 #else
 342                                 Debug( LDAP_DEBUG_ANY,
 343                                         "backend_startup: bi_db_open failed! (%d)\n",
 344                                         rc, 0, 0 );
 345 #endif
 346                                 return rc;
 347                         }
 348                 }
 349
 350                 return rc;
 351         }
 352
 353         /* open each backend type */
 354         for( i = 0; i < nBackendInfo; i++ ) {
 355                 if( backendInfo[i].bi_nDB == 0) {
 356                         /* no database of this type, don't open */
 357                         continue;
 358                 }
 359
 360                 if( backendInfo[i].bi_open ) {
 361                         rc = backendInfo[i].bi_open(
 362                                 &backendInfo[i] );
 363                         if ( rc != 0 ) {
 364 #ifdef NEW_LOGGING
 365                                 LDAP_LOG( BACKEND, CRIT,
 366                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 367 #else
 368                                 Debug( LDAP_DEBUG_ANY,
 369                                         "backend_startup: bi_open %d failed!\n",
 370                                         i, 0, 0 );
 371 #endif
 372                                 return rc;
 373                         }
 374                 }
 375         }
 376
 377         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 378         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 379         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 380
 381         /* open each backend database */
 382         for( i = 0; i < nBackendDB; i++ ) {
 383                 /* append global access controls */
 384                 acl_append( &backendDB[i].be_acl, global_acl );
 385
 386                 backendDB[i].be_pending_csn_list = (struct be_pcl *)
 387                                                                 ch_calloc( 1, sizeof( struct be_pcl ));
 388                 LDAP_TAILQ_INIT( backendDB[i].be_pending_csn_list );
 389
 390                 if ( backendDB[i].be_suffix == NULL ) {
 391 #ifdef NEW_LOGGING
 392                         LDAP_LOG( BACKEND, CRIT,
 393                                 "backend_startup: warning, database %d (%s) "
 394                                 "has no suffix\n",
 395                                 i, backendDB[i].bd_info->bi_type, 0 );
 396 #else
 397                         Debug( LDAP_DEBUG_ANY,
 398                                 "backend_startup: warning, database %d (%s) "
 399                                 "has no suffix\n",
 400                                 i, backendDB[i].bd_info->bi_type, 0 );
 401 #endif
 402                 }
 403
 404                 if ( backendDB[i].bd_info->bi_db_open ) {
 405                         rc = backendDB[i].bd_info->bi_db_open(
 406                                 &backendDB[i] );
 407                         if ( rc != 0 ) {
 408 #ifdef NEW_LOGGING
 409                                 LDAP_LOG( BACKEND, CRIT,
 410                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 411 #else
 412                                 Debug( LDAP_DEBUG_ANY,
 413                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 414                                         i, rc, 0 );
 415 #endif
 416                                 return rc;
 417                         }
 418                 }
 419
 420                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 421                         syncinfo_t *si;
 422
 423                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 424                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 425 #ifdef NEW_LOGGING
 426                                 LDAP_LOG( BACKEND, CRIT,
 427                                         "backend_startup: database(%d) does not support "
 428                                         "operations required for syncrepl", i, 0, 0 );
 429 #else
 430                                 Debug( LDAP_DEBUG_ANY,
 431                                         "backend_startup: database(%d) does not support "
 432                                         "operations required for syncrepl", i, 0, 0 );
 433 #endif
 434                                 continue;
 435                         }
 436
 437                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 438                                 si->si_be = &backendDB[i];
 439                                 init_syncrepl( si );
 440                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 441                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 442                                                 si->si_interval, do_syncrepl, (void *) si );
 443                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 444                         }
 445                 }
 446         }
 447
 448         return rc;
 449 }
 450
 451 int backend_num( Backend *be )
 452 {
 453         int i;
 454
 455         if( be == NULL ) return -1;
 456
 457         for( i = 0; i < nBackendDB; i++ ) {
 458                 if( be == &backendDB[i] ) return i;
 459         }
 460         return -1;
 461 }
 462
 463 int backend_shutdown( Backend *be )
 464 {
 465         int i;
 466         int rc = 0;
 467
 468         if( be != NULL ) {
 469                 /* shutdown a specific backend database */
 470
 471                 if ( be->bd_info->bi_nDB == 0 ) {
 472                         /* no database of this type, we never opened it */
 473                         return 0;
 474                 }
 475
 476                 if ( be->bd_info->bi_db_close ) {
 477                         be->bd_info->bi_db_close( be );
 478                 }
 479
 480                 if( be->bd_info->bi_close ) {
 481                         be->bd_info->bi_close( be->bd_info );
 482                 }
 483
 484                 return 0;
 485         }
 486
 487         /* close each backend database */
 488         for( i = 0; i < nBackendDB; i++ ) {
 489                 if ( backendDB[i].bd_info->bi_db_close ) {
 490                         backendDB[i].bd_info->bi_db_close(
 491                                 &backendDB[i] );
 492                 }
 493
 494                 if(rc != 0) {
 495 #ifdef NEW_LOGGING
 496                         LDAP_LOG( BACKEND, NOTICE,
 497                                 "backend_shutdown: bi_close %s failed!\n",
 498                                 backendDB[i].be_type, 0, 0 );
 499 #else
 500                         Debug( LDAP_DEBUG_ANY,
 501                                 "backend_close: bi_close %s failed!\n",
 502                                 backendDB[i].be_type, 0, 0 );
 503 #endif
 504                 }
 505         }
 506
 507         /* close each backend type */
 508         for( i = 0; i < nBackendInfo; i++ ) {
 509                 if( backendInfo[i].bi_nDB == 0 ) {
 510                         /* no database of this type */
 511                         continue;
 512                 }
 513
 514                 if( backendInfo[i].bi_close ) {
 515                         backendInfo[i].bi_close(
 516                                 &backendInfo[i] );
 517                 }
 518         }
 519
 520         return 0;
 521 }
 522
 523 int backend_destroy(void)
 524 {
 525         int i;
 526         BackendDB *bd;
 527
 528         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 529
 530         /* destroy each backend database */
 531         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 532                 if ( bd->bd_info->bi_db_destroy ) {
 533                         bd->bd_info->bi_db_destroy( bd );
 534                 }
 535                 ber_bvarray_free( bd->be_suffix );
 536                 ber_bvarray_free( bd->be_nsuffix );
 537                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 538                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 539                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 540                 acl_destroy( bd->be_acl, global_acl );
 541         }
 542         free( backendDB );
 543
 544         /* destroy each backend type */
 545         for( i = 0; i < nBackendInfo; i++ ) {
 546                 if( backendInfo[i].bi_destroy ) {
 547                         backendInfo[i].bi_destroy(
 548                                 &backendInfo[i] );
 549                 }
 550         }
 551
 552 #ifdef SLAPD_MODULES
 553         if (backendInfo != binfo) {
 554            free(backendInfo);
 555         }
 556 #endif /* SLAPD_MODULES */
 557
 558         nBackendInfo = 0;
 559         backendInfo = NULL;
 560
 561         return 0;
 562 }
 563
 564 BackendInfo* backend_info(const char *type)
 565 {
 566         int i;
 567
 568         /* search for the backend type */
 569         for( i = 0; i < nBackendInfo; i++ ) {
 570                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 571                         return &backendInfo[i];
 572                 }
 573         }
 574
 575         return NULL;
 576 }
 577
 578
 579 BackendDB *
 580 backend_db_init(
 581     const char  *type
 582 )
 583 {
 584         Backend *be;
 585         BackendInfo *bi = backend_info(type);
 586         int     rc = 0;
 587
 588         if( bi == NULL ) {
 589                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 590                 return NULL;
 591         }
 592
 593         backendDB = (BackendDB *) ch_realloc(
 594                         (char *) backendDB,
 595                     (nBackendDB + 1) * sizeof(Backend) );
 596
 597         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 598
 599         be = &backends[nbackends++];
 600
 601         be->bd_info = bi;
 602         be->be_def_limit = deflimit;
 603         be->be_dfltaccess = global_default_access;
 604
 605         be->be_restrictops = global_restrictops;
 606         be->be_requires = global_requires;
 607         be->be_ssf_set = global_ssf_set;
 608
 609         be->be_context_csn.bv_len = 0;
 610         be->be_context_csn.bv_val = NULL;
 611         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 612         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 613
 614         LDAP_STAILQ_INIT( &be->be_syncinfo );
 615
 616         /* assign a default depth limit for alias deref */
 617         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 618
 619         if(bi->bi_db_init) {
 620                 rc = bi->bi_db_init( be );
 621         }
 622
 623         if(rc != 0) {
 624                 fprintf( stderr, "database init failed (%s)\n", type );
 625                 nbackends--;
 626                 return NULL;
 627         }
 628
 629         bi->bi_nDB++;
 630         return( be );
 631 }
 632
 633 void
 634 be_db_close( void )
 635 {
 636         int     i;
 637
 638         for ( i = 0; i < nbackends; i++ ) {
 639                 if ( backends[i].bd_info->bi_db_close ) {
 640                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 641                 }
 642         }
 643 }
 644
 645 Backend *
 646 select_backend(
 647         struct berval * dn,
 648         int manageDSAit,
 649         int noSubs )
 650 {
 651         int     i, j;
 652         ber_len_t len, dnlen = dn->bv_len;
 653         Backend *be = NULL;
 654
 655         for ( i = 0; i < nbackends; i++ ) {
 656                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 657                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 658                 {
 659                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 660                                 && noSubs )
 661                         {
 662                                 continue;
 663                         }
 664
 665                         len = backends[i].be_nsuffix[j].bv_len;
 666
 667                         if ( len > dnlen ) {
 668                                 /* suffix is longer than DN */
 669                                 continue;
 670                         }
 671
 672                         /*
 673                          * input DN is normalized, so the separator check
 674                          * need not look at escaping
 675                          */
 676                         if ( len && len < dnlen &&
 677                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 678                         {
 679                                 continue;
 680                         }
 681
 682                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 683                                 &dn->bv_val[dnlen-len] ) == 0 )
 684                         {
 685                                 if( be == NULL ) {
 686                                         be = &backends[i];
 687
 688                                         if( manageDSAit && len == dnlen &&
 689                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 690                                                 continue;
 691                                         }
 692                                 } else {
 693                                         be = &backends[i];
 694                                 }
 695                                 return be;
 696                         }
 697                 }
 698         }
 699
 700         return be;
 701 }
 702
 703 int
 704 be_issuffix(
 705     Backend     *be,
 706     struct berval       *bvsuffix
 707 )
 708 {
 709         int     i;
 710
 711         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 712                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 713                         return( 1 );
 714                 }
 715         }
 716
 717         return( 0 );
 718 }
 719
 720 int
 721 be_isroot_dn( Backend *be, struct berval *ndn )
 722 {
 723         if ( !ndn->bv_len ) {
 724                 return( 0 );
 725         }
 726
 727         if ( !be->be_rootndn.bv_len ) {
 728                 return( 0 );
 729         }
 730
 731         return dn_match( &be->be_rootndn, ndn );
 732 }
 733
 734 int
 735 be_sync_update( Operation *op )
 736 {
 737         return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) );
 738 }
 739
 740 int
 741 be_slurp_update( Operation *op )
 742 {
 743         return ( SLAP_SLURP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn ));
 744 }
 745
 746 int
 747 be_shadow_update( Operation *op )
 748 {
 749 #if 0
 750         return ( be_sync_update( op ) || be_slurp_update( op ) );
 751 #endif
 752         /* NOTE: this is slightly more efficient */
 753         return ( SLAP_SHADOW( op->o_bd ) && ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn ) ) );
 754 }
 755
 756 int
 757 be_isupdate_dn( Backend *be, struct berval *ndn )
 758 {
 759         if ( !ndn->bv_len ) {
 760                 return( 0 );
 761         }
 762
 763         if ( !be->be_update_ndn.bv_len ) {
 764                 return( 0 );
 765         }
 766
 767         return dn_match( &be->be_update_ndn, ndn );
 768 }
 769
 770 struct berval *
 771 be_root_dn( Backend *be )
 772 {
 773         return &be->be_rootdn;
 774 }
 775
 776 int
 777 be_isroot( Operation *op )
 778 {
 779         return be_isroot_dn( op->o_bd, &op->o_ndn );
 780 }
 781
 782 int
 783 be_isroot_pw( Operation *op )
 784 {
 785         int result;
 786         char *errmsg;
 787
 788         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 789                 return 0;
 790         }
 791
 792         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 793                 return 0;
 794         }
 795
 796 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 797         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 798 #ifdef SLAPD_SPASSWD
 799         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 800 #endif
 801 #endif
 802
 803         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 804
 805 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 806 #ifdef SLAPD_SPASSWD
 807         lutil_passwd_sasl_conn = NULL;
 808 #endif
 809         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 810 #endif
 811
 812         return result == 0;
 813 }
 814
 815 int
 816 be_entry_release_rw(
 817         Operation *op,
 818         Entry *e,
 819         int rw )
 820 {
 821         if ( op->o_bd->be_release ) {
 822                 /* free and release entry from backend */
 823                 return op->o_bd->be_release( op, e, rw );
 824         } else {
 825                 /* free entry */
 826                 entry_free( e );
 827                 return 0;
 828         }
 829 }
 830
 831 int
 832 backend_unbind( Operation *op, SlapReply *rs )
 833 {
 834         int             i;
 835
 836         for ( i = 0; i < nbackends; i++ ) {
 837 #if defined( LDAP_SLAPI )
 838                 if ( op->o_pb ) {
 839                         int rc;
 840                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 841                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 842                         rc = slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 843                                         (Slapi_PBlock *)op->o_pb );
 844                         if ( rc < 0 ) {
 845                                 /*
 846                                  * A preoperation plugin failure will abort the
 847                                  * entire operation.
 848                                  */
 849 #ifdef NEW_LOGGING
 850                                 LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 851                                                 "failed\n", 0, 0, 0);
 852 #else
 853                                 Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 854                                                 "failed.\n", 0, 0, 0);
 855 #endif
 856                                 return 0;
 857                         }
 858                 }
 859 #endif /* defined( LDAP_SLAPI ) */
 860
 861                 if ( backends[i].be_unbind ) {
 862                         op->o_bd = &backends[i];
 863                         (*backends[i].be_unbind)( op, rs );
 864                 }
 865
 866 #if defined( LDAP_SLAPI )
 867                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 868                                 (Slapi_PBlock *)op->o_pb ) < 0 ) {
 869 #ifdef NEW_LOGGING
 870                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 871                                         "failed\n", 0, 0, 0);
 872 #else
 873                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 874                                         "failed.\n", 0, 0, 0);
 875 #endif
 876                 }
 877 #endif /* defined( LDAP_SLAPI ) */
 878         }
 879
 880         return 0;
 881 }
 882
 883 int
 884 backend_connection_init(
 885         Connection   *conn
 886 )
 887 {
 888         int     i;
 889
 890         for ( i = 0; i < nbackends; i++ ) {
 891                 if ( backends[i].be_connection_init ) {
 892                         (*backends[i].be_connection_init)( &backends[i], conn);
 893                 }
 894         }
 895
 896         return 0;
 897 }
 898
 899 int
 900 backend_connection_destroy(
 901         Connection   *conn
 902 )
 903 {
 904         int     i;
 905
 906         for ( i = 0; i < nbackends; i++ ) {
 907                 if ( backends[i].be_connection_destroy ) {
 908                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 909                 }
 910         }
 911
 912         return 0;
 913 }
 914
 915 static int
 916 backend_check_controls(
 917         Operation *op,
 918         SlapReply *rs )
 919 {
 920         LDAPControl **ctrls = op->o_ctrls;
 921         rs->sr_err = LDAP_SUCCESS;
 922
 923         if( ctrls ) {
 924                 for( ; *ctrls != NULL ; ctrls++ ) {
 925                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 926                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 927                         {
 928                                 rs->sr_text = "control unavailable in context";
 929                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 930                                 break;
 931                         }
 932                 }
 933         }
 934
 935         return rs->sr_err;
 936 }
 937
 938 int
 939 backend_check_restrictions(
 940         Operation *op,
 941         SlapReply *rs,
 942         struct berval *opdata )
 943 {
 944         slap_mask_t restrictops;
 945         slap_mask_t requires;
 946         slap_mask_t opflag;
 947         slap_mask_t exopflag;
 948         slap_ssf_set_t *ssf;
 949         int updateop = 0;
 950         int starttls = 0;
 951         int session = 0;
 952
 953         if( op->o_bd ) {
 954                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 955                         return rs->sr_err;
 956                 }
 957
 958                 restrictops = op->o_bd->be_restrictops;
 959                 requires = op->o_bd->be_requires;
 960                 ssf = &op->o_bd->be_ssf_set;
 961
 962         } else {
 963                 restrictops = global_restrictops;
 964                 requires = global_requires;
 965                 ssf = &global_ssf_set;
 966         }
 967
 968         switch( op->o_tag ) {
 969         case LDAP_REQ_ADD:
 970                 opflag = SLAP_RESTRICT_OP_ADD;
 971                 updateop++;
 972                 break;
 973         case LDAP_REQ_BIND:
 974                 opflag = SLAP_RESTRICT_OP_BIND;
 975                 session++;
 976                 break;
 977         case LDAP_REQ_COMPARE:
 978                 opflag = SLAP_RESTRICT_OP_COMPARE;
 979                 break;
 980         case LDAP_REQ_DELETE:
 981                 updateop++;
 982                 opflag = SLAP_RESTRICT_OP_DELETE;
 983                 break;
 984         case LDAP_REQ_EXTENDED:
 985                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 986
 987                 if( !opdata ) {
 988                         /* treat unspecified as a modify */
 989                         opflag = SLAP_RESTRICT_OP_MODIFY;
 990                         updateop++;
 991                         break;
 992                 }
 993
 994                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 995                         session++;
 996                         starttls++;
 997                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 998                         break;
 999                 }
1000
1001                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
1002                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
1003                         break;
1004                 }
1005
1006                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
1007                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
1008                         break;
1009                 }
1010
1011                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
1012                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
1013                         updateop++;
1014                         break;
1015                 }
1016
1017                 /* treat everything else as a modify */
1018                 opflag = SLAP_RESTRICT_OP_MODIFY;
1019                 updateop++;
1020                 break;
1021
1022         case LDAP_REQ_MODIFY:
1023                 updateop++;
1024                 opflag = SLAP_RESTRICT_OP_MODIFY;
1025                 break;
1026         case LDAP_REQ_RENAME:
1027                 updateop++;
1028                 opflag = SLAP_RESTRICT_OP_RENAME;
1029                 break;
1030         case LDAP_REQ_SEARCH:
1031                 opflag = SLAP_RESTRICT_OP_SEARCH;
1032                 break;
1033         case LDAP_REQ_UNBIND:
1034                 session++;
1035                 opflag = 0;
1036                 break;
1037         default:
1038                 rs->sr_text = "restrict operations internal error";
1039                 rs->sr_err = LDAP_OTHER;
1040                 return rs->sr_err;
1041         }
1042
1043         if ( !starttls ) {
1044                 /* these checks don't apply to StartTLS */
1045
1046                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1047                 if( op->o_transport_ssf < ssf->sss_transport ) {
1048                         rs->sr_text = "transport confidentiality required";
1049                         return rs->sr_err;
1050                 }
1051
1052                 if( op->o_tls_ssf < ssf->sss_tls ) {
1053                         rs->sr_text = "TLS confidentiality required";
1054                         return rs->sr_err;
1055                 }
1056
1057
1058                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1059                         /* simple bind specific check */
1060                         if( op->o_ssf < ssf->sss_simple_bind ) {
1061                                 rs->sr_text = "confidentiality required";
1062                                 return rs->sr_err;
1063                         }
1064                 }
1065
1066                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1067                         /* these checks don't apply to SASL bind */
1068
1069                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1070                                 rs->sr_text = "SASL confidentiality required";
1071                                 return rs->sr_err;
1072                         }
1073
1074                         if( op->o_ssf < ssf->sss_ssf ) {
1075                                 rs->sr_text = "confidentiality required";
1076                                 return rs->sr_err;
1077                         }
1078                 }
1079
1080                 if( updateop ) {
1081                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1082                                 rs->sr_text = "transport update confidentiality required";
1083                                 return rs->sr_err;
1084                         }
1085
1086                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1087                                 rs->sr_text = "TLS update confidentiality required";
1088                                 return rs->sr_err;
1089                         }
1090
1091                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1092                                 rs->sr_text = "SASL update confidentiality required";
1093                                 return rs->sr_err;
1094                         }
1095
1096                         if( op->o_ssf < ssf->sss_update_ssf ) {
1097                                 rs->sr_text = "update confidentiality required";
1098                                 return rs->sr_err;
1099                         }
1100
1101                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1102                                 op->o_ndn.bv_len == 0 )
1103                         {
1104                                 rs->sr_text = "modifications require authentication";
1105                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1106                                 return rs->sr_err;
1107                         }
1108
1109 #ifdef SLAP_X_LISTENER_MOD
1110                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1111                                 /* no "w" mode means readonly */
1112                                 rs->sr_text = "modifications not allowed on this listener";
1113                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1114                                 return rs->sr_err;
1115                         }
1116 #endif /* SLAP_X_LISTENER_MOD */
1117                 }
1118         }
1119
1120         if ( !session ) {
1121                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1122
1123                 if( requires & SLAP_REQUIRE_STRONG ) {
1124                         /* should check mechanism */
1125                         if( ( op->o_transport_ssf < ssf->sss_transport
1126                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1127                                 || op->o_dn.bv_len == 0 )
1128                         {
1129                                 rs->sr_text = "strong(er) authentication required";
1130                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1131                                 return rs->sr_err;
1132                         }
1133                 }
1134
1135                 if( requires & SLAP_REQUIRE_SASL ) {
1136                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1137                                 rs->sr_text = "SASL authentication required";
1138                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1139                                 return rs->sr_err;
1140                         }
1141                 }
1142
1143                 if( requires & SLAP_REQUIRE_AUTHC ) {
1144                         if( op->o_dn.bv_len == 0 ) {
1145                                 rs->sr_text = "authentication required";
1146                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1147                                 return rs->sr_err;
1148                         }
1149                 }
1150
1151                 if( requires & SLAP_REQUIRE_BIND ) {
1152                         int version;
1153                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1154                         version = op->o_conn->c_protocol;
1155                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1156
1157                         if( !version ) {
1158                                 /* no bind has occurred */
1159                                 rs->sr_text = "BIND required";
1160                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1161                                 return rs->sr_err;
1162                         }
1163                 }
1164
1165                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1166                         if( op->o_protocol < LDAP_VERSION3 ) {
1167                                 /* no bind has occurred */
1168                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1169                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1170                                 return rs->sr_err;
1171                         }
1172                 }
1173
1174 #ifdef SLAP_X_LISTENER_MOD
1175                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1176                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1177                                 /* no "x" mode means bind required */
1178                                 rs->sr_text = "bind required on this listener";
1179                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1180                                 return rs->sr_err;
1181                         }
1182                 }
1183
1184                 if ( !starttls && !updateop ) {
1185                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1186                                 /* no "r" mode means no read */
1187                                 rs->sr_text = "read not allowed on this listener";
1188                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1189                                 return rs->sr_err;
1190                         }
1191                 }
1192 #endif /* SLAP_X_LISTENER_MOD */
1193
1194         }
1195
1196         if( ( restrictops & opflag )
1197                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1198                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1199                         rs->sr_text = "read operations restricted";
1200                 } else if ( restrictops & exopflag ) {
1201                         rs->sr_text = "extended operation restricted";
1202                 } else {
1203                         rs->sr_text = "operation restricted";
1204                 }
1205                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1206                 return rs->sr_err;
1207         }
1208
1209         rs->sr_err = LDAP_SUCCESS;
1210         return rs->sr_err;
1211 }
1212
1213 int backend_check_referrals( Operation *op, SlapReply *rs )
1214 {
1215         rs->sr_err = LDAP_SUCCESS;
1216
1217         if( op->o_bd->be_chk_referrals ) {
1218                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1219
1220                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1221                         send_ldap_result( op, rs );
1222                 }
1223         }
1224
1225         return rs->sr_err;
1226 }
1227
1228 int
1229 be_entry_get_rw(
1230         Operation *op,
1231         struct berval *ndn,
1232         ObjectClass *oc,
1233         AttributeDescription *at,
1234         int rw,
1235         Entry **e )
1236 {
1237         int rc;
1238
1239         *e = NULL;
1240
1241         if (op->o_bd == NULL) {
1242                 rc = LDAP_NO_SUCH_OBJECT;
1243         } else if ( op->o_bd->be_fetch ) {
1244                 rc = ( op->o_bd->be_fetch )( op, ndn,
1245                         oc, at, rw, e );
1246         } else {
1247                 rc = LDAP_UNWILLING_TO_PERFORM;
1248         }
1249         return rc;
1250 }
1251
1252 int
1253 backend_group(
1254         Operation *op,
1255         Entry   *target,
1256         struct berval *gr_ndn,
1257         struct berval *op_ndn,
1258         ObjectClass *group_oc,
1259         AttributeDescription *group_at
1260 )
1261 {
1262         Entry *e;
1263         Attribute *a;
1264         int rc;
1265         GroupAssertion *g;
1266         Backend *be = op->o_bd;
1267
1268         if ( op->o_abandon ) return SLAPD_ABANDON;
1269
1270         op->o_bd = select_backend( gr_ndn, 0, 0 );
1271
1272         for (g = op->o_groups; g; g=g->ga_next) {
1273                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1274                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1275                         continue;
1276                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1277                         break;
1278         }
1279
1280         if (g) {
1281                 rc = g->ga_res;
1282                 goto done;
1283         }
1284
1285         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1286                 e = target;
1287                 rc = 0;
1288         } else {
1289                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1290         }
1291         if ( e ) {
1292                 a = attr_find( e->e_attrs, group_at );
1293                 if ( a ) {
1294                         /* If the attribute is a subtype of labeledURI, treat this as
1295                          * a dynamic group ala groupOfURLs
1296                          */
1297                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1298                                 int i;
1299                                 LDAPURLDesc *ludp;
1300                                 struct berval bv, nbase;
1301                                 Filter *filter;
1302                                 Entry *user;
1303                                 Backend *b2 = op->o_bd;
1304
1305                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1306                                         user = target;
1307                                 } else {
1308                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1309                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1310                                 }
1311
1312                                 if ( rc == 0 ) {
1313                                         rc = 1;
1314                                         for (i=0; a->a_vals[i].bv_val; i++) {
1315                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1316                                                         continue;
1317                                                 nbase.bv_val = NULL;
1318                                                 /* host part must be empty */
1319                                                 /* attrs and extensions parts must be empty */
1320                                                 if (( ludp->lud_host && *ludp->lud_host )
1321                                                         || ludp->lud_attrs || ludp->lud_exts )
1322                                                         goto loopit;
1323                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1324                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1325                                                         goto loopit;
1326                                                 switch(ludp->lud_scope) {
1327                                                 case LDAP_SCOPE_BASE:
1328                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1329                                                         break;
1330                                                 case LDAP_SCOPE_ONELEVEL:
1331                                                         dnParent(op_ndn, &bv );
1332                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1333                                                         break;
1334                                                 case LDAP_SCOPE_SUBTREE:
1335                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1336                                                         break;
1337 #ifdef LDAP_SCOPE_SUBORDINATE
1338                                                 case LDAP_SCOPE_SUBORDINATE:
1339                                                         if ( dn_match( &nbase, op_ndn ) &&
1340                                                                 !dnIsSuffix(op_ndn, &nbase ))
1341                                                         {
1342                                                                 goto loopit;
1343                                                         }
1344 #endif
1345                                                 }
1346                                                 filter = str2filter_x( op, ludp->lud_filter );
1347                                                 if ( filter ) {
1348                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1349                                                         {
1350                                                                 rc = 0;
1351                                                         }
1352                                                         filter_free_x( op, filter );
1353                                                 }
1354         loopit:
1355                                                 ldap_free_urldesc( ludp );
1356                                                 if ( nbase.bv_val ) {
1357                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1358                                                 }
1359                                                 if ( rc == 0 ) break;
1360                                         }
1361                                         if ( user != target ) {
1362                                                 be_entry_release_r( op, user );
1363                                         }
1364                                 }
1365                                 op->o_bd = b2;
1366                         } else {
1367                                 rc = value_find_ex( group_at,
1368                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1369                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1370                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1371                         }
1372                 } else {
1373                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1374                 }
1375                 if (e != target ) {
1376                         be_entry_release_r( op, e );
1377                 }
1378         } else {
1379                 rc = LDAP_NO_SUCH_OBJECT;
1380         }
1381
1382         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1383                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len, op->o_tmpmemctx);
1384                 g->ga_be = op->o_bd;
1385                 g->ga_oc = group_oc;
1386                 g->ga_at = group_at;
1387                 g->ga_res = rc;
1388                 g->ga_len = gr_ndn->bv_len;
1389                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1390                 g->ga_next = op->o_groups;
1391                 op->o_groups = g;
1392         }
1393 done:
1394         op->o_bd = be;
1395         return rc;
1396 }
1397
1398 int
1399 backend_attribute(
1400         Operation *op,
1401         Entry   *target,
1402         struct berval   *edn,
1403         AttributeDescription *entry_at,
1404         BerVarray *vals
1405 )
1406 {
1407         Entry *e;
1408         Attribute *a;
1409         int i, j, rc = LDAP_SUCCESS;
1410         AccessControlState acl_state = ACL_STATE_INIT;
1411         Backend *be = op->o_bd;
1412
1413         op->o_bd = select_backend( edn, 0, 0 );
1414
1415         if ( target && dn_match( &target->e_nname, edn ) ) {
1416                 e = target;
1417         } else {
1418                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1419         }
1420
1421         if ( e ) {
1422                 a = attr_find( e->e_attrs, entry_at );
1423                 if ( a ) {
1424                         BerVarray v;
1425
1426                         if ( op->o_conn && access_allowed( op,
1427                                 e, entry_at, NULL, ACL_AUTH,
1428                                 &acl_state ) == 0 ) {
1429                                 rc = LDAP_INSUFFICIENT_ACCESS;
1430                                 goto freeit;
1431                         }
1432
1433                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1434
1435                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1436                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1437                                 if ( op->o_conn && access_allowed( op,
1438                                         e, entry_at,
1439                                         &a->a_nvals[i],
1440                                         ACL_AUTH, &acl_state ) == 0 ) {
1441                                         continue;
1442                                 }
1443                                 ber_dupbv_x( &v[j],
1444                                         &a->a_nvals[i], op->o_tmpmemctx );
1445                                 if (v[j].bv_val ) j++;
1446                         }
1447                         if (j == 0) {
1448                                 op->o_tmpfree( v, op->o_tmpmemctx );
1449                                 *vals = NULL;
1450                                 rc = LDAP_INSUFFICIENT_ACCESS;
1451                         } else {
1452                                 v[j].bv_val = NULL;
1453                                 v[j].bv_len = 0;
1454                                 *vals = v;
1455                                 rc = LDAP_SUCCESS;
1456                         }
1457                 }
1458 freeit:         if (e != target ) {
1459                         be_entry_release_r( op, e );
1460                 }
1461         }
1462
1463         op->o_bd = be;
1464         return rc;
1465 }
1466
1467 Attribute *backend_operational(
1468         Operation *op,
1469         SlapReply *rs,
1470         int opattrs     )
1471 {
1472         Attribute *a = NULL, **ap = &a;
1473
1474         /*
1475          * If operational attributes (allegedly) are required,
1476          * and the backend supports specific operational attributes,
1477          * add them to the attribute list
1478          */
1479         if ( opattrs || ( op->ors_attrs &&
1480                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1481                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1482                 ap = &(*ap)->a_next;
1483         }
1484
1485         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1486                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1487         }
1488
1489         return a;
1490 }
1491