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, "backend_add: "
 237                         "backend type \"%s\" does not have the (mandatory)init function\n",
 238                         aBackendInfo->bi_type, 0, 0 );
 239 #else
 240                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 241                         "backend type \"%s\" does not have the (mandatory)init function\n",
 242                         aBackendInfo->bi_type, 0, 0 );
 243 #endif
 244                 return -1;
 245         }
 246
 247    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 248 #ifdef NEW_LOGGING
 249                 LDAP_LOG( BACKEND, ERR,
 250                         "backend_add:  initialization for type \"%s\" failed\n",
 251                         aBackendInfo->bi_type, 0, 0 );
 252 #else
 253                 Debug( LDAP_DEBUG_ANY,
 254                         "backend_add:  initialization for type \"%s\" failed\n",
 255                         aBackendInfo->bi_type, 0, 0 );
 256 #endif
 257                 return rc;
 258    }
 259
 260         /* now add the backend type to the Backend Info List */
 261         {
 262                 BackendInfo *newBackendInfo = 0;
 263
 264                 /* if backendInfo == binfo no deallocation of old backendInfo */
 265                 if (backendInfo == binfo) {
 266                         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 267                         AC_MEMCPY(newBackendInfo, backendInfo,
 268                                 sizeof(BackendInfo) * nBackendInfo);
 269                 } else {
 270                         newBackendInfo = ch_realloc(backendInfo,
 271                                 sizeof(BackendInfo) * (nBackendInfo + 1));
 272                 }
 273
 274                 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 275                         sizeof(BackendInfo));
 276                 backendInfo = newBackendInfo;
 277                 nBackendInfo++;
 278                 return 0;
 279         }
 280 }
 281
 282 /* startup a specific backend database */
 283 int backend_startup_one(Backend *be)
 284 {
 285         int rc = 0;
 286
 287         assert(be);
 288
 289         be->be_pending_csn_list = (struct be_pcl *)
 290                 ch_calloc( 1, sizeof( struct be_pcl ));
 291         build_new_dn( &be->be_context_csn, be->be_nsuffix,
 292                 (struct berval *)&slap_ldapsync_cn_bv, NULL );
 293
 294         LDAP_TAILQ_INIT( be->be_pending_csn_list );
 295
 296 #ifdef NEW_LOGGING
 297         LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 298                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 299                 0, 0 );
 300 #else
 301         Debug( LDAP_DEBUG_TRACE,
 302                 "backend_startup: starting \"%s\"\n",
 303                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 304                 0, 0 );
 305 #endif
 306         if ( be->bd_info->bi_db_open ) {
 307                 rc = be->bd_info->bi_db_open( be );
 308                 if ( rc != 0 ) {
 309 #ifdef NEW_LOGGING
 310                         LDAP_LOG( BACKEND, CRIT,
 311                                 "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 312 #else
 313                         Debug( LDAP_DEBUG_ANY,
 314                                 "backend_startup: bi_db_open failed! (%d)\n",
 315                                 rc, 0, 0 );
 316 #endif
 317                 }
 318         }
 319         return rc;
 320 }
 321
 322 int backend_startup(Backend *be)
 323 {
 324         int i;
 325         int rc = 0;
 326
 327         if( ! ( nBackendDB > 0 ) ) {
 328                 /* no databases */
 329 #ifdef NEW_LOGGING
 330                 LDAP_LOG( BACKEND, INFO,
 331                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 332 #else
 333                 Debug( LDAP_DEBUG_ANY,
 334                         "backend_startup: %d databases to startup.\n",
 335                         nBackendDB, 0, 0 );
 336 #endif
 337                 return 1;
 338         }
 339
 340         if(be != NULL) {
 341                 if ( be->bd_info->bi_open ) {
 342                         rc = be->bd_info->bi_open( be->bd_info );
 343                         if ( rc != 0 ) {
 344 #ifdef NEW_LOGGING
 345                                 LDAP_LOG( BACKEND, CRIT,
 346                                         "backend_startup: bi_open failed!\n", 0, 0, 0 );
 347 #else
 348                                 Debug( LDAP_DEBUG_ANY,
 349                                         "backend_startup: bi_open failed!\n",
 350                                         0, 0, 0 );
 351 #endif
 352
 353                                 return rc;
 354                         }
 355                 }
 356
 357                 return backend_startup_one( be );
 358         }
 359
 360         /* open each backend type */
 361         for( i = 0; i < nBackendInfo; i++ ) {
 362                 if( backendInfo[i].bi_nDB == 0) {
 363                         /* no database of this type, don't open */
 364                         continue;
 365                 }
 366
 367                 if( backendInfo[i].bi_open ) {
 368                         rc = backendInfo[i].bi_open(
 369                                 &backendInfo[i] );
 370                         if ( rc != 0 ) {
 371 #ifdef NEW_LOGGING
 372                                 LDAP_LOG( BACKEND, CRIT,
 373                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 374 #else
 375                                 Debug( LDAP_DEBUG_ANY,
 376                                         "backend_startup: bi_open %d failed!\n",
 377                                         i, 0, 0 );
 378 #endif
 379                                 return rc;
 380                         }
 381                 }
 382         }
 383
 384         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 385         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 386         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 387
 388         /* open each backend database */
 389         for( i = 0; i < nBackendDB; i++ ) {
 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                 /* append global access controls */
 404                 acl_append( &backendDB[i].be_acl, global_acl );
 405
 406                 rc = backend_startup_one( &backendDB[i] );
 407
 408                 if ( rc ) return rc;
 409
 410
 411                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 412                         syncinfo_t *si;
 413
 414                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 415                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 416 #ifdef NEW_LOGGING
 417                                 LDAP_LOG( BACKEND, CRIT,
 418                                         "backend_startup: database(%d) does not support "
 419                                         "operations required for syncrepl", i, 0, 0 );
 420 #else
 421                                 Debug( LDAP_DEBUG_ANY,
 422                                         "backend_startup: database(%d) does not support "
 423                                         "operations required for syncrepl", i, 0, 0 );
 424 #endif
 425                                 continue;
 426                         }
 427
 428                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 429                                 si->si_be = &backendDB[i];
 430                                 init_syncrepl( si );
 431                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 432                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 433                                                 si->si_interval, do_syncrepl, (void *) si );
 434                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 435                         }
 436                 }
 437         }
 438
 439         return rc;
 440 }
 441
 442 int backend_num( Backend *be )
 443 {
 444         int i;
 445
 446         if( be == NULL ) return -1;
 447
 448         for( i = 0; i < nBackendDB; i++ ) {
 449                 if( be == &backendDB[i] ) return i;
 450         }
 451         return -1;
 452 }
 453
 454 int backend_shutdown( Backend *be )
 455 {
 456         int i;
 457         int rc = 0;
 458
 459         if( be != NULL ) {
 460                 /* shutdown a specific backend database */
 461
 462                 if ( be->bd_info->bi_nDB == 0 ) {
 463                         /* no database of this type, we never opened it */
 464                         return 0;
 465                 }
 466
 467                 if ( be->bd_info->bi_db_close ) {
 468                         be->bd_info->bi_db_close( be );
 469                 }
 470
 471                 if( be->bd_info->bi_close ) {
 472                         be->bd_info->bi_close( be->bd_info );
 473                 }
 474
 475                 return 0;
 476         }
 477
 478         /* close each backend database */
 479         for( i = 0; i < nBackendDB; i++ ) {
 480                 if ( backendDB[i].bd_info->bi_db_close ) {
 481                         backendDB[i].bd_info->bi_db_close(
 482                                 &backendDB[i] );
 483                 }
 484
 485                 if(rc != 0) {
 486 #ifdef NEW_LOGGING
 487                         LDAP_LOG( BACKEND, NOTICE,
 488                                 "backend_shutdown: bi_close %s failed!\n",
 489                                 backendDB[i].be_type, 0, 0 );
 490 #else
 491                         Debug( LDAP_DEBUG_ANY,
 492                                 "backend_close: bi_close %s failed!\n",
 493                                 backendDB[i].be_type, 0, 0 );
 494 #endif
 495                 }
 496         }
 497
 498         /* close each backend type */
 499         for( i = 0; i < nBackendInfo; i++ ) {
 500                 if( backendInfo[i].bi_nDB == 0 ) {
 501                         /* no database of this type */
 502                         continue;
 503                 }
 504
 505                 if( backendInfo[i].bi_close ) {
 506                         backendInfo[i].bi_close(
 507                                 &backendInfo[i] );
 508                 }
 509         }
 510
 511         return 0;
 512 }
 513
 514 int backend_destroy(void)
 515 {
 516         int i;
 517         BackendDB *bd;
 518
 519         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 520
 521         /* destroy each backend database */
 522         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 523                 if ( bd->bd_info->bi_db_destroy ) {
 524                         bd->bd_info->bi_db_destroy( bd );
 525                 }
 526                 ber_bvarray_free( bd->be_suffix );
 527                 ber_bvarray_free( bd->be_nsuffix );
 528                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 529                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 530                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 531                 if ( bd->be_context_csn.bv_val ) free( bd->be_context_csn.bv_val );
 532                 acl_destroy( bd->be_acl, global_acl );
 533         }
 534         free( backendDB );
 535
 536         /* destroy each backend type */
 537         for( i = 0; i < nBackendInfo; i++ ) {
 538                 if( backendInfo[i].bi_destroy ) {
 539                         backendInfo[i].bi_destroy(
 540                                 &backendInfo[i] );
 541                 }
 542         }
 543
 544 #ifdef SLAPD_MODULES
 545         if (backendInfo != binfo) {
 546            free(backendInfo);
 547         }
 548 #endif /* SLAPD_MODULES */
 549
 550         nBackendInfo = 0;
 551         backendInfo = NULL;
 552
 553         return 0;
 554 }
 555
 556 BackendInfo* backend_info(const char *type)
 557 {
 558         int i;
 559
 560         /* search for the backend type */
 561         for( i = 0; i < nBackendInfo; i++ ) {
 562                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 563                         return &backendInfo[i];
 564                 }
 565         }
 566
 567         return NULL;
 568 }
 569
 570
 571 BackendDB *
 572 backend_db_init(
 573     const char  *type )
 574 {
 575         Backend *be;
 576         BackendInfo *bi = backend_info(type);
 577         int     rc = 0;
 578
 579         if( bi == NULL ) {
 580                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 581                 return NULL;
 582         }
 583
 584         backendDB = (BackendDB *) ch_realloc(
 585                         (char *) backendDB,
 586                     (nBackendDB + 1) * sizeof(Backend) );
 587
 588         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 589
 590         be = &backends[nbackends++];
 591
 592         be->bd_info = bi;
 593         be->be_def_limit = deflimit;
 594         be->be_dfltaccess = global_default_access;
 595
 596         be->be_restrictops = global_restrictops;
 597         be->be_requires = global_requires;
 598         be->be_ssf_set = global_ssf_set;
 599
 600         be->be_context_csn.bv_len = 0;
 601         be->be_context_csn.bv_val = NULL;
 602         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 603         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 604
 605         LDAP_STAILQ_INIT( &be->be_syncinfo );
 606
 607         /* assign a default depth limit for alias deref */
 608         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 609
 610         if(bi->bi_db_init) {
 611                 rc = bi->bi_db_init( be );
 612         }
 613
 614         if(rc != 0) {
 615                 fprintf( stderr, "database init failed (%s)\n", type );
 616                 nbackends--;
 617                 return NULL;
 618         }
 619
 620         bi->bi_nDB++;
 621         return( be );
 622 }
 623
 624 void
 625 be_db_close( void )
 626 {
 627         int     i;
 628
 629         for ( i = 0; i < nbackends; i++ ) {
 630                 if ( backends[i].bd_info->bi_db_close ) {
 631                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 632                 }
 633         }
 634 }
 635
 636 Backend *
 637 select_backend(
 638         struct berval * dn,
 639         int manageDSAit,
 640         int noSubs )
 641 {
 642         int     i, j;
 643         ber_len_t len, dnlen = dn->bv_len;
 644         Backend *be = NULL;
 645
 646         for ( i = 0; i < nbackends; i++ ) {
 647                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 648                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 649                 {
 650                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 651                                 && noSubs )
 652                         {
 653                                 continue;
 654                         }
 655
 656                         len = backends[i].be_nsuffix[j].bv_len;
 657
 658                         if ( len > dnlen ) {
 659                                 /* suffix is longer than DN */
 660                                 continue;
 661                         }
 662
 663                         /*
 664                          * input DN is normalized, so the separator check
 665                          * need not look at escaping
 666                          */
 667                         if ( len && len < dnlen &&
 668                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 669                         {
 670                                 continue;
 671                         }
 672
 673                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 674                                 &dn->bv_val[dnlen-len] ) == 0 )
 675                         {
 676                                 if( be == NULL ) {
 677                                         be = &backends[i];
 678
 679                                         if( manageDSAit && len == dnlen &&
 680                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 681                                                 continue;
 682                                         }
 683                                 } else {
 684                                         be = &backends[i];
 685                                 }
 686                                 return be;
 687                         }
 688                 }
 689         }
 690
 691         return be;
 692 }
 693
 694 int
 695 be_issuffix(
 696     Backend *be,
 697     struct berval *bvsuffix )
 698 {
 699         int     i;
 700
 701         for ( i = 0;
 702                 be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL;
 703                 i++ )
 704         {
 705                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 706                         return( 1 );
 707                 }
 708         }
 709
 710         return( 0 );
 711 }
 712
 713 int
 714 be_isroot_dn( Backend *be, struct berval *ndn )
 715 {
 716         if ( !ndn->bv_len ) {
 717                 return( 0 );
 718         }
 719
 720         if ( !be->be_rootndn.bv_len ) {
 721                 return( 0 );
 722         }
 723
 724         return dn_match( &be->be_rootndn, ndn );
 725 }
 726
 727 int
 728 be_sync_update( Operation *op )
 729 {
 730         return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) );
 731 }
 732
 733 int
 734 be_slurp_update( Operation *op )
 735 {
 736         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 737                 be_isupdate_dn( op->o_bd, &op->o_ndn ));
 738 }
 739
 740 int
 741 be_shadow_update( Operation *op )
 742 {
 743         return ( SLAP_SHADOW( op->o_bd ) &&
 744                 ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn )));
 745 }
 746
 747 int
 748 be_isupdate_dn( Backend *be, struct berval *ndn )
 749 {
 750         if ( !ndn->bv_len ) return( 0 );
 751
 752         if ( !be->be_update_ndn.bv_len ) return( 0 );
 753
 754         return dn_match( &be->be_update_ndn, ndn );
 755 }
 756
 757 struct berval *
 758 be_root_dn( Backend *be )
 759 {
 760         return &be->be_rootdn;
 761 }
 762
 763 int
 764 be_isroot( Operation *op )
 765 {
 766         return be_isroot_dn( op->o_bd, &op->o_ndn );
 767 }
 768
 769 int
 770 be_isroot_pw( Operation *op )
 771 {
 772         int result;
 773
 774         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 775                 return 0;
 776         }
 777
 778         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 779                 return 0;
 780         }
 781
 782 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 783         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 784 #ifdef SLAPD_SPASSWD
 785         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 786 #endif
 787 #endif
 788
 789         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 790
 791 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 792 #ifdef SLAPD_SPASSWD
 793         lutil_passwd_sasl_conn = NULL;
 794 #endif
 795         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 796 #endif
 797
 798         return result == 0;
 799 }
 800
 801 int
 802 be_entry_release_rw(
 803         Operation *op,
 804         Entry *e,
 805         int rw )
 806 {
 807         if ( op->o_bd->be_release ) {
 808                 /* free and release entry from backend */
 809                 return op->o_bd->be_release( op, e, rw );
 810         } else {
 811                 /* free entry */
 812                 entry_free( e );
 813                 return 0;
 814         }
 815 }
 816
 817 int
 818 backend_unbind( Operation *op, SlapReply *rs )
 819 {
 820         int             i;
 821
 822         for ( i = 0; i < nbackends; i++ ) {
 823 #if defined( LDAP_SLAPI )
 824                 if ( op->o_pb ) {
 825                         int rc;
 826                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 827                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 828                         rc = slapi_int_call_plugins( &backends[i],
 829                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 830                         if ( rc < 0 ) {
 831                                 /*
 832                                  * A preoperation plugin failure will abort the
 833                                  * entire operation.
 834                                  */
 835 #ifdef NEW_LOGGING
 836                                 LDAP_LOG( OPERATION, INFO,
 837                                         "do_bind: Unbind preoperation plugin failed\n",
 838                                         0, 0, 0);
 839 #else
 840                                 Debug(LDAP_DEBUG_TRACE,
 841                                         "do_bind: Unbind preoperation plugin failed\n",
 842                                         0, 0, 0);
 843 #endif
 844                                 return 0;
 845                         }
 846                 }
 847 #endif /* defined( LDAP_SLAPI ) */
 848
 849                 if ( backends[i].be_unbind ) {
 850                         op->o_bd = &backends[i];
 851                         (*backends[i].be_unbind)( op, rs );
 852                 }
 853
 854 #if defined( LDAP_SLAPI )
 855                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 856                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 857                 {
 858 #ifdef NEW_LOGGING
 859                         LDAP_LOG( OPERATION, INFO,
 860                                 "do_unbind: Unbind postoperation plugins failed\n",
 861                                 0, 0, 0);
 862 #else
 863                         Debug(LDAP_DEBUG_TRACE,
 864                                 "do_unbind: Unbind postoperation plugins failed\n",
 865                                 0, 0, 0);
 866 #endif
 867                 }
 868 #endif /* defined( LDAP_SLAPI ) */
 869         }
 870
 871         return 0;
 872 }
 873
 874 int
 875 backend_connection_init(
 876         Connection   *conn )
 877 {
 878         int     i;
 879
 880         for ( i = 0; i < nbackends; i++ ) {
 881                 if ( backends[i].be_connection_init ) {
 882                         (*backends[i].be_connection_init)( &backends[i], conn);
 883                 }
 884         }
 885
 886         return 0;
 887 }
 888
 889 int
 890 backend_connection_destroy(
 891         Connection   *conn )
 892 {
 893         int     i;
 894
 895         for ( i = 0; i < nbackends; i++ ) {
 896                 if ( backends[i].be_connection_destroy ) {
 897                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 898                 }
 899         }
 900
 901         return 0;
 902 }
 903
 904 static int
 905 backend_check_controls(
 906         Operation *op,
 907         SlapReply *rs )
 908 {
 909         LDAPControl **ctrls = op->o_ctrls;
 910         rs->sr_err = LDAP_SUCCESS;
 911
 912         if( ctrls ) {
 913                 for( ; *ctrls != NULL ; ctrls++ ) {
 914                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 915                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 916                         {
 917                                 rs->sr_text = "control unavailable in context";
 918                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 919                                 break;
 920                         }
 921                 }
 922         }
 923
 924         return rs->sr_err;
 925 }
 926
 927 int
 928 backend_check_restrictions(
 929         Operation *op,
 930         SlapReply *rs,
 931         struct berval *opdata )
 932 {
 933         slap_mask_t restrictops;
 934         slap_mask_t requires;
 935         slap_mask_t opflag;
 936         slap_mask_t exopflag = 0;
 937         slap_ssf_set_t *ssf;
 938         int updateop = 0;
 939         int starttls = 0;
 940         int session = 0;
 941
 942         if( op->o_bd ) {
 943                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 944                         return rs->sr_err;
 945                 }
 946
 947                 restrictops = op->o_bd->be_restrictops;
 948                 requires = op->o_bd->be_requires;
 949                 ssf = &op->o_bd->be_ssf_set;
 950
 951         } else {
 952                 restrictops = global_restrictops;
 953                 requires = global_requires;
 954                 ssf = &global_ssf_set;
 955         }
 956
 957         switch( op->o_tag ) {
 958         case LDAP_REQ_ADD:
 959                 opflag = SLAP_RESTRICT_OP_ADD;
 960                 updateop++;
 961                 break;
 962         case LDAP_REQ_BIND:
 963                 opflag = SLAP_RESTRICT_OP_BIND;
 964                 session++;
 965                 break;
 966         case LDAP_REQ_COMPARE:
 967                 opflag = SLAP_RESTRICT_OP_COMPARE;
 968                 break;
 969         case LDAP_REQ_DELETE:
 970                 updateop++;
 971                 opflag = SLAP_RESTRICT_OP_DELETE;
 972                 break;
 973         case LDAP_REQ_EXTENDED:
 974                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 975
 976                 if( !opdata ) {
 977                         /* treat unspecified as a modify */
 978                         opflag = SLAP_RESTRICT_OP_MODIFY;
 979                         updateop++;
 980                         break;
 981                 }
 982
 983                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 984                         session++;
 985                         starttls++;
 986                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 987                         break;
 988                 }
 989
 990                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 991                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
 992                         break;
 993                 }
 994
 995                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 996                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
 997                         break;
 998                 }
 999
1000                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
1001                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
1002                         updateop++;
1003                         break;
1004                 }
1005
1006                 /* treat everything else as a modify */
1007                 opflag = SLAP_RESTRICT_OP_MODIFY;
1008                 updateop++;
1009                 break;
1010
1011         case LDAP_REQ_MODIFY:
1012                 updateop++;
1013                 opflag = SLAP_RESTRICT_OP_MODIFY;
1014                 break;
1015         case LDAP_REQ_RENAME:
1016                 updateop++;
1017                 opflag = SLAP_RESTRICT_OP_RENAME;
1018                 break;
1019         case LDAP_REQ_SEARCH:
1020                 opflag = SLAP_RESTRICT_OP_SEARCH;
1021                 break;
1022         case LDAP_REQ_UNBIND:
1023                 session++;
1024                 opflag = 0;
1025                 break;
1026         default:
1027                 rs->sr_text = "restrict operations internal error";
1028                 rs->sr_err = LDAP_OTHER;
1029                 return rs->sr_err;
1030         }
1031
1032         if ( !starttls ) {
1033                 /* these checks don't apply to StartTLS */
1034
1035                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1036                 if( op->o_transport_ssf < ssf->sss_transport ) {
1037                         rs->sr_text = op->o_transport_ssf
1038                                 ? "stronger transport confidentiality required"
1039                                 : "transport confidentiality required";
1040                         return rs->sr_err;
1041                 }
1042
1043                 if( op->o_tls_ssf < ssf->sss_tls ) {
1044                         rs->sr_text = op->o_tls_ssf
1045                                 ? "stronger TLS confidentiality required"
1046                                 : "TLS confidentiality required";
1047                         return rs->sr_err;
1048                 }
1049
1050
1051                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1052                         /* simple bind specific check */
1053                         if( op->o_ssf < ssf->sss_simple_bind ) {
1054                                 rs->sr_text = op->o_ssf
1055                                         ? "stronger confidentiality required"
1056                                         : "confidentiality required";
1057                                 return rs->sr_err;
1058                         }
1059                 }
1060
1061                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1062                         /* these checks don't apply to SASL bind */
1063
1064                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1065                                 rs->sr_text = op->o_sasl_ssf
1066                                         ? "stronger SASL confidentiality required"
1067                                         : "SASL confidentiality required";
1068                                 return rs->sr_err;
1069                         }
1070
1071                         if( op->o_ssf < ssf->sss_ssf ) {
1072                                 rs->sr_text = op->o_ssf
1073                                         ? "stronger confidentiality required"
1074                                         : "confidentiality required";
1075                                 return rs->sr_err;
1076                         }
1077                 }
1078
1079                 if( updateop ) {
1080                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1081                                 rs->sr_text = op->o_transport_ssf
1082                                         ? "stronger transport confidentiality required for update"
1083                                         : "transport confidentiality required for update";
1084                                 return rs->sr_err;
1085                         }
1086
1087                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1088                                 rs->sr_text = op->o_tls_ssf
1089                                         ? "stronger TLS confidentiality required for update"
1090                                         : "TLS confidentiality required for update";
1091                                 return rs->sr_err;
1092                         }
1093
1094                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1095                                 rs->sr_text = op->o_sasl_ssf
1096                                         ? "stronger SASL confidentiality required for update"
1097                                         : "SASL confidentiality required for update";
1098                                 return rs->sr_err;
1099                         }
1100
1101                         if( op->o_ssf < ssf->sss_update_ssf ) {
1102                                 rs->sr_text = op->o_ssf
1103                                         ? "stronger confidentiality required for update"
1104                                         : "confidentiality required for update";
1105                                 return rs->sr_err;
1106                         }
1107
1108                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1109                                 op->o_ndn.bv_len == 0 )
1110                         {
1111                                 rs->sr_text = "modifications require authentication";
1112                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1113                                 return rs->sr_err;
1114                         }
1115
1116 #ifdef SLAP_X_LISTENER_MOD
1117                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1118                                 /* no "w" mode means readonly */
1119                                 rs->sr_text = "modifications not allowed on this listener";
1120                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1121                                 return rs->sr_err;
1122                         }
1123 #endif /* SLAP_X_LISTENER_MOD */
1124                 }
1125         }
1126
1127         if ( !session ) {
1128                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1129
1130                 if( requires & SLAP_REQUIRE_STRONG ) {
1131                         /* should check mechanism */
1132                         if( ( op->o_transport_ssf < ssf->sss_transport
1133                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1134                                 || op->o_dn.bv_len == 0 )
1135                         {
1136                                 rs->sr_text = "strong(er) authentication required";
1137                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1138                                 return rs->sr_err;
1139                         }
1140                 }
1141
1142                 if( requires & SLAP_REQUIRE_SASL ) {
1143                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1144                                 rs->sr_text = "SASL authentication required";
1145                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1146                                 return rs->sr_err;
1147                         }
1148                 }
1149
1150                 if( requires & SLAP_REQUIRE_AUTHC ) {
1151                         if( op->o_dn.bv_len == 0 ) {
1152                                 rs->sr_text = "authentication required";
1153                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1154                                 return rs->sr_err;
1155                         }
1156                 }
1157
1158                 if( requires & SLAP_REQUIRE_BIND ) {
1159                         int version;
1160                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1161                         version = op->o_conn->c_protocol;
1162                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1163
1164                         if( !version ) {
1165                                 /* no bind has occurred */
1166                                 rs->sr_text = "BIND required";
1167                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1168                                 return rs->sr_err;
1169                         }
1170                 }
1171
1172                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1173                         if( op->o_protocol < LDAP_VERSION3 ) {
1174                                 /* no bind has occurred */
1175                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1176                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1177                                 return rs->sr_err;
1178                         }
1179                 }
1180
1181 #ifdef SLAP_X_LISTENER_MOD
1182                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1183                         if ( op->o_conn->c_listener &&
1184                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1185                 {
1186                                 /* no "x" mode means bind required */
1187                                 rs->sr_text = "bind required on this listener";
1188                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1189                                 return rs->sr_err;
1190                         }
1191                 }
1192
1193                 if ( !starttls && !updateop ) {
1194                         if ( op->o_conn->c_listener &&
1195                                 !( op->o_conn->c_listener->sl_perms &
1196                                         ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH )))
1197                         {
1198                                 /* no "r" mode means no read */
1199                                 rs->sr_text = "read not allowed on this listener";
1200                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1201                                 return rs->sr_err;
1202                         }
1203                 }
1204 #endif /* SLAP_X_LISTENER_MOD */
1205
1206         }
1207
1208         if( ( restrictops & opflag )
1209                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1210                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1211                         rs->sr_text = "read operations restricted";
1212                 } else if ( restrictops & exopflag ) {
1213                         rs->sr_text = "extended operation restricted";
1214                 } else {
1215                         rs->sr_text = "operation restricted";
1216                 }
1217                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1218                 return rs->sr_err;
1219         }
1220
1221         rs->sr_err = LDAP_SUCCESS;
1222         return rs->sr_err;
1223 }
1224
1225 int backend_check_referrals( Operation *op, SlapReply *rs )
1226 {
1227         rs->sr_err = LDAP_SUCCESS;
1228
1229         if( op->o_bd->be_chk_referrals ) {
1230                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1231
1232                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1233                         send_ldap_result( op, rs );
1234                 }
1235         }
1236
1237         return rs->sr_err;
1238 }
1239
1240 int
1241 be_entry_get_rw(
1242         Operation *op,
1243         struct berval *ndn,
1244         ObjectClass *oc,
1245         AttributeDescription *at,
1246         int rw,
1247         Entry **e )
1248 {
1249         int rc;
1250
1251         *e = NULL;
1252
1253         if (op->o_bd == NULL) {
1254                 rc = LDAP_NO_SUCH_OBJECT;
1255         } else if ( op->o_bd->be_fetch ) {
1256                 rc = ( op->o_bd->be_fetch )( op, ndn,
1257                         oc, at, rw, e );
1258         } else {
1259                 rc = LDAP_UNWILLING_TO_PERFORM;
1260         }
1261         return rc;
1262 }
1263
1264 int
1265 backend_group(
1266         Operation *op,
1267         Entry   *target,
1268         struct berval *gr_ndn,
1269         struct berval *op_ndn,
1270         ObjectClass *group_oc,
1271         AttributeDescription *group_at )
1272 {
1273         Entry *e;
1274         Attribute *a;
1275         int rc;
1276         GroupAssertion *g;
1277         Backend *be = op->o_bd;
1278
1279         if ( op->o_abandon ) return SLAPD_ABANDON;
1280
1281         op->o_bd = select_backend( gr_ndn, 0, 0 );
1282
1283         for (g = op->o_groups; g; g=g->ga_next) {
1284                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1285                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1286                         continue;
1287                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1288                         break;
1289         }
1290
1291         if (g) {
1292                 rc = g->ga_res;
1293                 goto done;
1294         }
1295
1296         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1297                 e = target;
1298                 rc = 0;
1299         } else {
1300                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1301         }
1302         if ( e ) {
1303                 a = attr_find( e->e_attrs, group_at );
1304                 if ( a ) {
1305                         /* If the attribute is a subtype of labeledURI, treat this as
1306                          * a dynamic group ala groupOfURLs
1307                          */
1308                         if (is_at_subtype( group_at->ad_type,
1309                                 slap_schema.si_ad_labeledURI->ad_type ) )
1310                         {
1311                                 int i;
1312                                 LDAPURLDesc *ludp;
1313                                 struct berval bv, nbase;
1314                                 Filter *filter;
1315                                 Entry *user;
1316                                 Backend *b2 = op->o_bd;
1317
1318                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1319                                         user = target;
1320                                 } else {
1321                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1322                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1323                                 }
1324
1325                                 if ( rc == 0 ) {
1326                                         rc = 1;
1327                                         for (i=0; a->a_vals[i].bv_val; i++) {
1328                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1329                                                         LDAP_SUCCESS )
1330                                                 {
1331                                                         continue;
1332                                                 }
1333                                                 nbase.bv_val = NULL;
1334                                                 /* host part must be empty */
1335                                                 /* attrs and extensions parts must be empty */
1336                                                 if (( ludp->lud_host && *ludp->lud_host ) ||
1337                                                         ludp->lud_attrs || ludp->lud_exts )
1338                                                 {
1339                                                         goto loopit;
1340                                                 }
1341                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1342                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1343                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1344                                                 {
1345                                                         goto loopit;
1346                                                 }
1347                                                 switch(ludp->lud_scope) {
1348                                                 case LDAP_SCOPE_BASE:
1349                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1350                                                         break;
1351                                                 case LDAP_SCOPE_ONELEVEL:
1352                                                         dnParent(op_ndn, &bv );
1353                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1354                                                         break;
1355                                                 case LDAP_SCOPE_SUBTREE:
1356                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1357                                                         break;
1358 #ifdef LDAP_SCOPE_SUBORDINATE
1359                                                 case LDAP_SCOPE_SUBORDINATE:
1360                                                         if ( dn_match( &nbase, op_ndn ) &&
1361                                                                 !dnIsSuffix(op_ndn, &nbase ))
1362                                                         {
1363                                                                 goto loopit;
1364                                                         }
1365 #endif
1366                                                 }
1367                                                 filter = str2filter_x( op, ludp->lud_filter );
1368                                                 if ( filter ) {
1369                                                         if ( test_filter( NULL, user, filter ) ==
1370                                                                 LDAP_COMPARE_TRUE )
1371                                                         {
1372                                                                 rc = 0;
1373                                                         }
1374                                                         filter_free_x( op, filter );
1375                                                 }
1376 loopit:
1377                                                 ldap_free_urldesc( ludp );
1378                                                 if ( nbase.bv_val ) {
1379                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1380                                                 }
1381                                                 if ( rc == 0 ) break;
1382                                         }
1383                                         if ( user != target ) {
1384                                                 be_entry_release_r( op, user );
1385                                         }
1386                                 }
1387                                 op->o_bd = b2;
1388                         } else {
1389                                 rc = value_find_ex( group_at,
1390                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1391                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1392                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1393                         }
1394                 } else {
1395                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1396                 }
1397                 if (e != target ) {
1398                         be_entry_release_r( op, e );
1399                 }
1400         } else {
1401                 rc = LDAP_NO_SUCH_OBJECT;
1402         }
1403
1404         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1405                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len,
1406                         op->o_tmpmemctx);
1407                 g->ga_be = op->o_bd;
1408                 g->ga_oc = group_oc;
1409                 g->ga_at = group_at;
1410                 g->ga_res = rc;
1411                 g->ga_len = gr_ndn->bv_len;
1412                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1413                 g->ga_next = op->o_groups;
1414                 op->o_groups = g;
1415         }
1416 done:
1417         op->o_bd = be;
1418         return rc;
1419 }
1420
1421 int
1422 backend_attribute(
1423         Operation *op,
1424         Entry   *target,
1425         struct berval   *edn,
1426         AttributeDescription *entry_at,
1427         BerVarray *vals )
1428 {
1429         Entry *e;
1430         Attribute *a;
1431         int i, j, rc = LDAP_SUCCESS;
1432         AccessControlState acl_state = ACL_STATE_INIT;
1433         Backend *be = op->o_bd;
1434
1435         op->o_bd = select_backend( edn, 0, 0 );
1436
1437         if ( target && dn_match( &target->e_nname, edn ) ) {
1438                 e = target;
1439         } else {
1440                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1441         }
1442
1443         if ( e ) {
1444                 a = attr_find( e->e_attrs, entry_at );
1445                 if ( a ) {
1446                         BerVarray v;
1447
1448                         if ( op->o_conn && access_allowed( op,
1449                                 e, entry_at, NULL, ACL_AUTH,
1450                                 &acl_state ) == 0 ) {
1451                                 rc = LDAP_INSUFFICIENT_ACCESS;
1452                                 goto freeit;
1453                         }
1454
1455                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1456
1457                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1458                                 op->o_tmpmemctx );
1459                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1460                                 if ( op->o_conn && access_allowed( op,
1461                                         e, entry_at,
1462                                         &a->a_nvals[i],
1463                                         ACL_AUTH, &acl_state ) == 0 ) {
1464                                         continue;
1465                                 }
1466                                 ber_dupbv_x( &v[j],
1467                                         &a->a_nvals[i], op->o_tmpmemctx );
1468                                 if (v[j].bv_val ) j++;
1469                         }
1470                         if (j == 0) {
1471                                 op->o_tmpfree( v, op->o_tmpmemctx );
1472                                 *vals = NULL;
1473                                 rc = LDAP_INSUFFICIENT_ACCESS;
1474                         } else {
1475                                 v[j].bv_val = NULL;
1476                                 v[j].bv_len = 0;
1477                                 *vals = v;
1478                                 rc = LDAP_SUCCESS;
1479                         }
1480                 }
1481 freeit:         if (e != target ) {
1482                         be_entry_release_r( op, e );
1483                 }
1484         }
1485
1486         op->o_bd = be;
1487         return rc;
1488 }
1489
1490 int backend_operational(
1491         Operation *op,
1492         SlapReply *rs )
1493 {
1494         Attribute       **ap;
1495         int             rc = 0;
1496
1497         for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1498                 /* just count them */ ;
1499
1500         /*
1501          * If operational attributes (allegedly) are required,
1502          * and the backend supports specific operational attributes,
1503          * add them to the attribute list
1504          */
1505         if ( rs->sr_opattrs == SLAP_OPATTRS || ( op->ors_attrs &&
1506                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1507                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1508
1509                 ap = &(*ap)->a_next;
1510         }
1511
1512         if ( ( rs->sr_opattrs == SLAP_OPATTRS || op->ors_attrs ) && op->o_bd &&
1513                 op->o_bd->be_operational != NULL )
1514         {
1515                 rs->sr_operational_attrs = NULL;
1516                 rc = op->o_bd->be_operational( op, rs );
1517                 *ap = rs->sr_operational_attrs;
1518
1519                 for ( ; *ap; ap = &(*ap)->a_next )
1520                         /* just count them */ ;
1521         }
1522
1523         return rc;
1524 }
1525