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