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 int backend_startup(Backend *be)
 283 {
 284         int i;
 285         int rc = 0;
 286
 287         if( ! ( nBackendDB > 0 ) ) {
 288                 /* no databases */
 289 #ifdef NEW_LOGGING
 290                 LDAP_LOG( BACKEND, INFO,
 291                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 292 #else
 293                 Debug( LDAP_DEBUG_ANY,
 294                         "backend_startup: %d databases to startup.\n",
 295                         nBackendDB, 0, 0 );
 296 #endif
 297                 return 1;
 298         }
 299
 300         if(be != NULL) {
 301                 /* startup a specific backend database */
 302                 be->be_pending_csn_list = (struct be_pcl *)
 303                         ch_calloc( 1, sizeof( struct be_pcl ));
 304                 build_new_dn( &be->be_context_csn, be->be_nsuffix,
 305                         &slap_ldapsync_cn_bv, NULL );
 306
 307                 LDAP_TAILQ_INIT( be->be_pending_csn_list );
 308
 309 #ifdef NEW_LOGGING
 310                 LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 311                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 312                         0, 0 );
 313 #else
 314                 Debug( LDAP_DEBUG_TRACE,
 315                         "backend_startup: starting \"%s\"\n",
 316                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 317                         0, 0 );
 318 #endif
 319
 320                 if ( be->bd_info->bi_open ) {
 321                         rc = be->bd_info->bi_open( be->bd_info );
 322                         if ( rc != 0 ) {
 323 #ifdef NEW_LOGGING
 324                                 LDAP_LOG( BACKEND, CRIT,
 325                                         "backend_startup: bi_open failed!\n", 0, 0, 0 );
 326 #else
 327                                 Debug( LDAP_DEBUG_ANY,
 328                                         "backend_startup: bi_open failed!\n",
 329                                         0, 0, 0 );
 330 #endif
 331
 332                                 return rc;
 333                         }
 334                 }
 335
 336                 if ( be->bd_info->bi_db_open ) {
 337                         rc = be->bd_info->bi_db_open( be );
 338                         if ( rc != 0 ) {
 339 #ifdef NEW_LOGGING
 340                                 LDAP_LOG( BACKEND, CRIT,
 341                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 342 #else
 343                                 Debug( LDAP_DEBUG_ANY,
 344                                         "backend_startup: bi_db_open failed! (%d)\n",
 345                                         rc, 0, 0 );
 346 #endif
 347                                 return rc;
 348                         }
 349                 }
 350
 351                 return rc;
 352         }
 353
 354         /* open each backend type */
 355         for( i = 0; i < nBackendInfo; i++ ) {
 356                 if( backendInfo[i].bi_nDB == 0) {
 357                         /* no database of this type, don't open */
 358                         continue;
 359                 }
 360
 361                 if( backendInfo[i].bi_open ) {
 362                         rc = backendInfo[i].bi_open(
 363                                 &backendInfo[i] );
 364                         if ( rc != 0 ) {
 365 #ifdef NEW_LOGGING
 366                                 LDAP_LOG( BACKEND, CRIT,
 367                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 368 #else
 369                                 Debug( LDAP_DEBUG_ANY,
 370                                         "backend_startup: bi_open %d failed!\n",
 371                                         i, 0, 0 );
 372 #endif
 373                                 return rc;
 374                         }
 375                 }
 376         }
 377
 378         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 379         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 380         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 381
 382         /* open each backend database */
 383         for( i = 0; i < nBackendDB; i++ ) {
 384                 /* append global access controls */
 385                 acl_append( &backendDB[i].be_acl, global_acl );
 386
 387                 backendDB[i].be_pending_csn_list = (struct be_pcl *)
 388                                                                 ch_calloc( 1, sizeof( struct be_pcl ));
 389                 LDAP_TAILQ_INIT( backendDB[i].be_pending_csn_list );
 390
 391                 if ( backendDB[i].be_suffix == NULL ) {
 392 #ifdef NEW_LOGGING
 393                         LDAP_LOG( BACKEND, CRIT,
 394                                 "backend_startup: warning, database %d (%s) "
 395                                 "has no suffix\n",
 396                                 i, backendDB[i].bd_info->bi_type, 0 );
 397 #else
 398                         Debug( LDAP_DEBUG_ANY,
 399                                 "backend_startup: warning, database %d (%s) "
 400                                 "has no suffix\n",
 401                                 i, backendDB[i].bd_info->bi_type, 0 );
 402 #endif
 403                 }
 404                 build_new_dn( &be->be_context_csn, be->be_nsuffix,
 405                         &slap_ldapsync_cn_bv, NULL );
 406
 407                 if ( backendDB[i].bd_info->bi_db_open ) {
 408                         rc = backendDB[i].bd_info->bi_db_open(
 409                                 &backendDB[i] );
 410                         if ( rc != 0 ) {
 411 #ifdef NEW_LOGGING
 412                                 LDAP_LOG( BACKEND, CRIT,
 413                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 414                                         i, rc, 0 );
 415 #else
 416                                 Debug( LDAP_DEBUG_ANY,
 417                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 418                                         i, rc, 0 );
 419 #endif
 420                                 return rc;
 421                         }
 422                 }
 423
 424                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 425                         syncinfo_t *si;
 426
 427                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 428                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 429 #ifdef NEW_LOGGING
 430                                 LDAP_LOG( BACKEND, CRIT,
 431                                         "backend_startup: database(%d) does not support "
 432                                         "operations required for syncrepl", i, 0, 0 );
 433 #else
 434                                 Debug( LDAP_DEBUG_ANY,
 435                                         "backend_startup: database(%d) does not support "
 436                                         "operations required for syncrepl", i, 0, 0 );
 437 #endif
 438                                 continue;
 439                         }
 440
 441                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 442                                 si->si_be = &backendDB[i];
 443                                 init_syncrepl( si );
 444                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 445                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 446                                                 si->si_interval, do_syncrepl, (void *) si );
 447                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 448                         }
 449                 }
 450         }
 451
 452         return rc;
 453 }
 454
 455 int backend_num( Backend *be )
 456 {
 457         int i;
 458
 459         if( be == NULL ) return -1;
 460
 461         for( i = 0; i < nBackendDB; i++ ) {
 462                 if( be == &backendDB[i] ) return i;
 463         }
 464         return -1;
 465 }
 466
 467 int backend_shutdown( Backend *be )
 468 {
 469         int i;
 470         int rc = 0;
 471
 472         if( be != NULL ) {
 473                 /* shutdown a specific backend database */
 474
 475                 if ( be->bd_info->bi_nDB == 0 ) {
 476                         /* no database of this type, we never opened it */
 477                         return 0;
 478                 }
 479
 480                 if ( be->bd_info->bi_db_close ) {
 481                         be->bd_info->bi_db_close( be );
 482                 }
 483
 484                 if( be->bd_info->bi_close ) {
 485                         be->bd_info->bi_close( be->bd_info );
 486                 }
 487
 488                 return 0;
 489         }
 490
 491         /* close each backend database */
 492         for( i = 0; i < nBackendDB; i++ ) {
 493                 if ( backendDB[i].bd_info->bi_db_close ) {
 494                         backendDB[i].bd_info->bi_db_close(
 495                                 &backendDB[i] );
 496                 }
 497
 498                 if(rc != 0) {
 499 #ifdef NEW_LOGGING
 500                         LDAP_LOG( BACKEND, NOTICE,
 501                                 "backend_shutdown: bi_close %s failed!\n",
 502                                 backendDB[i].be_type, 0, 0 );
 503 #else
 504                         Debug( LDAP_DEBUG_ANY,
 505                                 "backend_close: bi_close %s failed!\n",
 506                                 backendDB[i].be_type, 0, 0 );
 507 #endif
 508                 }
 509         }
 510
 511         /* close each backend type */
 512         for( i = 0; i < nBackendInfo; i++ ) {
 513                 if( backendInfo[i].bi_nDB == 0 ) {
 514                         /* no database of this type */
 515                         continue;
 516                 }
 517
 518                 if( backendInfo[i].bi_close ) {
 519                         backendInfo[i].bi_close(
 520                                 &backendInfo[i] );
 521                 }
 522         }
 523
 524         return 0;
 525 }
 526
 527 int backend_destroy(void)
 528 {
 529         int i;
 530         BackendDB *bd;
 531
 532         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 533
 534         /* destroy each backend database */
 535         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 536                 if ( bd->bd_info->bi_db_destroy ) {
 537                         bd->bd_info->bi_db_destroy( bd );
 538                 }
 539                 ber_bvarray_free( bd->be_suffix );
 540                 ber_bvarray_free( bd->be_nsuffix );
 541                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 542                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 543                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 544                 acl_destroy( bd->be_acl, global_acl );
 545         }
 546         free( backendDB );
 547
 548         /* destroy each backend type */
 549         for( i = 0; i < nBackendInfo; i++ ) {
 550                 if( backendInfo[i].bi_destroy ) {
 551                         backendInfo[i].bi_destroy(
 552                                 &backendInfo[i] );
 553                 }
 554         }
 555
 556 #ifdef SLAPD_MODULES
 557         if (backendInfo != binfo) {
 558            free(backendInfo);
 559         }
 560 #endif /* SLAPD_MODULES */
 561
 562         nBackendInfo = 0;
 563         backendInfo = NULL;
 564
 565         return 0;
 566 }
 567
 568 BackendInfo* backend_info(const char *type)
 569 {
 570         int i;
 571
 572         /* search for the backend type */
 573         for( i = 0; i < nBackendInfo; i++ ) {
 574                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 575                         return &backendInfo[i];
 576                 }
 577         }
 578
 579         return NULL;
 580 }
 581
 582
 583 BackendDB *
 584 backend_db_init(
 585     const char  *type )
 586 {
 587         Backend *be;
 588         BackendInfo *bi = backend_info(type);
 589         int     rc = 0;
 590
 591         if( bi == NULL ) {
 592                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 593                 return NULL;
 594         }
 595
 596         backendDB = (BackendDB *) ch_realloc(
 597                         (char *) backendDB,
 598                     (nBackendDB + 1) * sizeof(Backend) );
 599
 600         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 601
 602         be = &backends[nbackends++];
 603
 604         be->bd_info = bi;
 605         be->be_def_limit = deflimit;
 606         be->be_dfltaccess = global_default_access;
 607
 608         be->be_restrictops = global_restrictops;
 609         be->be_requires = global_requires;
 610         be->be_ssf_set = global_ssf_set;
 611
 612         be->be_context_csn.bv_len = 0;
 613         be->be_context_csn.bv_val = NULL;
 614         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 615         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 616
 617         LDAP_STAILQ_INIT( &be->be_syncinfo );
 618
 619         /* assign a default depth limit for alias deref */
 620         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 621
 622         if(bi->bi_db_init) {
 623                 rc = bi->bi_db_init( be );
 624         }
 625
 626         if(rc != 0) {
 627                 fprintf( stderr, "database init failed (%s)\n", type );
 628                 nbackends--;
 629                 return NULL;
 630         }
 631
 632         bi->bi_nDB++;
 633         return( be );
 634 }
 635
 636 void
 637 be_db_close( void )
 638 {
 639         int     i;
 640
 641         for ( i = 0; i < nbackends; i++ ) {
 642                 if ( backends[i].bd_info->bi_db_close ) {
 643                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 644                 }
 645         }
 646 }
 647
 648 Backend *
 649 select_backend(
 650         struct berval * dn,
 651         int manageDSAit,
 652         int noSubs )
 653 {
 654         int     i, j;
 655         ber_len_t len, dnlen = dn->bv_len;
 656         Backend *be = NULL;
 657
 658         for ( i = 0; i < nbackends; i++ ) {
 659                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 660                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 661                 {
 662                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 663                                 && noSubs )
 664                         {
 665                                 continue;
 666                         }
 667
 668                         len = backends[i].be_nsuffix[j].bv_len;
 669
 670                         if ( len > dnlen ) {
 671                                 /* suffix is longer than DN */
 672                                 continue;
 673                         }
 674
 675                         /*
 676                          * input DN is normalized, so the separator check
 677                          * need not look at escaping
 678                          */
 679                         if ( len && len < dnlen &&
 680                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 681                         {
 682                                 continue;
 683                         }
 684
 685                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 686                                 &dn->bv_val[dnlen-len] ) == 0 )
 687                         {
 688                                 if( be == NULL ) {
 689                                         be = &backends[i];
 690
 691                                         if( manageDSAit && len == dnlen &&
 692                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 693                                                 continue;
 694                                         }
 695                                 } else {
 696                                         be = &backends[i];
 697                                 }
 698                                 return be;
 699                         }
 700                 }
 701         }
 702
 703         return be;
 704 }
 705
 706 int
 707 be_issuffix(
 708     Backend *be,
 709     struct berval *bvsuffix )
 710 {
 711         int     i;
 712
 713         for ( i = 0;
 714                 be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL;
 715                 i++ )
 716         {
 717                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 718                         return( 1 );
 719                 }
 720         }
 721
 722         return( 0 );
 723 }
 724
 725 int
 726 be_isroot_dn( Backend *be, struct berval *ndn )
 727 {
 728         if ( !ndn->bv_len ) {
 729                 return( 0 );
 730         }
 731
 732         if ( !be->be_rootndn.bv_len ) {
 733                 return( 0 );
 734         }
 735
 736         return dn_match( &be->be_rootndn, ndn );
 737 }
 738
 739 int
 740 be_sync_update( Operation *op )
 741 {
 742         return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) );
 743 }
 744
 745 int
 746 be_slurp_update( Operation *op )
 747 {
 748         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 749                 be_isupdate_dn( op->o_bd, &op->o_ndn ));
 750 }
 751
 752 int
 753 be_shadow_update( Operation *op )
 754 {
 755         return ( SLAP_SHADOW( op->o_bd ) &&
 756                 ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn )));
 757 }
 758
 759 int
 760 be_isupdate_dn( Backend *be, struct berval *ndn )
 761 {
 762         if ( !ndn->bv_len ) return( 0 );
 763
 764         if ( !be->be_update_ndn.bv_len ) return( 0 );
 765
 766         return dn_match( &be->be_update_ndn, ndn );
 767 }
 768
 769 struct berval *
 770 be_root_dn( Backend *be )
 771 {
 772         return &be->be_rootdn;
 773 }
 774
 775 int
 776 be_isroot( Operation *op )
 777 {
 778         return be_isroot_dn( op->o_bd, &op->o_ndn );
 779 }
 780
 781 int
 782 be_isroot_pw( Operation *op )
 783 {
 784         int result;
 785         char *errmsg;
 786
 787         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 788                 return 0;
 789         }
 790
 791         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 792                 return 0;
 793         }
 794
 795 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 796         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 797 #ifdef SLAPD_SPASSWD
 798         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 799 #endif
 800 #endif
 801
 802         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 803
 804 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 805 #ifdef SLAPD_SPASSWD
 806         lutil_passwd_sasl_conn = NULL;
 807 #endif
 808         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 809 #endif
 810
 811         return result == 0;
 812 }
 813
 814 int
 815 be_entry_release_rw(
 816         Operation *op,
 817         Entry *e,
 818         int rw )
 819 {
 820         if ( op->o_bd->be_release ) {
 821                 /* free and release entry from backend */
 822                 return op->o_bd->be_release( op, e, rw );
 823         } else {
 824                 /* free entry */
 825                 entry_free( e );
 826                 return 0;
 827         }
 828 }
 829
 830 int
 831 backend_unbind( Operation *op, SlapReply *rs )
 832 {
 833         int             i;
 834
 835         for ( i = 0; i < nbackends; i++ ) {
 836 #if defined( LDAP_SLAPI )
 837                 if ( op->o_pb ) {
 838                         int rc;
 839                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 840                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 841                         rc = slapi_int_call_plugins( &backends[i],
 842                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 843                         if ( rc < 0 ) {
 844                                 /*
 845                                  * A preoperation plugin failure will abort the
 846                                  * entire operation.
 847                                  */
 848 #ifdef NEW_LOGGING
 849                                 LDAP_LOG( OPERATION, INFO,
 850                                         "do_bind: Unbind preoperation plugin failed\n",
 851                                         0, 0, 0);
 852 #else
 853                                 Debug(LDAP_DEBUG_TRACE,
 854                                         "do_bind: Unbind preoperation plugin failed\n",
 855                                         0, 0, 0);
 856 #endif
 857                                 return 0;
 858                         }
 859                 }
 860 #endif /* defined( LDAP_SLAPI ) */
 861
 862                 if ( backends[i].be_unbind ) {
 863                         op->o_bd = &backends[i];
 864                         (*backends[i].be_unbind)( op, rs );
 865                 }
 866
 867 #if defined( LDAP_SLAPI )
 868                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 869                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 870                 {
 871 #ifdef NEW_LOGGING
 872                         LDAP_LOG( OPERATION, INFO,
 873                                 "do_unbind: Unbind postoperation plugins failed\n",
 874                                 0, 0, 0);
 875 #else
 876                         Debug(LDAP_DEBUG_TRACE,
 877                                 "do_unbind: Unbind postoperation plugins failed\n",
 878                                 0, 0, 0);
 879 #endif
 880                 }
 881 #endif /* defined( LDAP_SLAPI ) */
 882         }
 883
 884         return 0;
 885 }
 886
 887 int
 888 backend_connection_init(
 889         Connection   *conn )
 890 {
 891         int     i;
 892
 893         for ( i = 0; i < nbackends; i++ ) {
 894                 if ( backends[i].be_connection_init ) {
 895                         (*backends[i].be_connection_init)( &backends[i], conn);
 896                 }
 897         }
 898
 899         return 0;
 900 }
 901
 902 int
 903 backend_connection_destroy(
 904         Connection   *conn )
 905 {
 906         int     i;
 907
 908         for ( i = 0; i < nbackends; i++ ) {
 909                 if ( backends[i].be_connection_destroy ) {
 910                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 911                 }
 912         }
 913
 914         return 0;
 915 }
 916
 917 static int
 918 backend_check_controls(
 919         Operation *op,
 920         SlapReply *rs )
 921 {
 922         LDAPControl **ctrls = op->o_ctrls;
 923         rs->sr_err = LDAP_SUCCESS;
 924
 925         if( ctrls ) {
 926                 for( ; *ctrls != NULL ; ctrls++ ) {
 927                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 928                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 929                         {
 930                                 rs->sr_text = "control unavailable in context";
 931                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 932                                 break;
 933                         }
 934                 }
 935         }
 936
 937         return rs->sr_err;
 938 }
 939
 940 int
 941 backend_check_restrictions(
 942         Operation *op,
 943         SlapReply *rs,
 944         struct berval *opdata )
 945 {
 946         slap_mask_t restrictops;
 947         slap_mask_t requires;
 948         slap_mask_t opflag;
 949         slap_mask_t exopflag = 0;
 950         slap_ssf_set_t *ssf;
 951         int updateop = 0;
 952         int starttls = 0;
 953         int session = 0;
 954
 955         if( op->o_bd ) {
 956                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 957                         return rs->sr_err;
 958                 }
 959
 960                 restrictops = op->o_bd->be_restrictops;
 961                 requires = op->o_bd->be_requires;
 962                 ssf = &op->o_bd->be_ssf_set;
 963
 964         } else {
 965                 restrictops = global_restrictops;
 966                 requires = global_requires;
 967                 ssf = &global_ssf_set;
 968         }
 969
 970         switch( op->o_tag ) {
 971         case LDAP_REQ_ADD:
 972                 opflag = SLAP_RESTRICT_OP_ADD;
 973                 updateop++;
 974                 break;
 975         case LDAP_REQ_BIND:
 976                 opflag = SLAP_RESTRICT_OP_BIND;
 977                 session++;
 978                 break;
 979         case LDAP_REQ_COMPARE:
 980                 opflag = SLAP_RESTRICT_OP_COMPARE;
 981                 break;
 982         case LDAP_REQ_DELETE:
 983                 updateop++;
 984                 opflag = SLAP_RESTRICT_OP_DELETE;
 985                 break;
 986         case LDAP_REQ_EXTENDED:
 987                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 988
 989                 if( !opdata ) {
 990                         /* treat unspecified as a modify */
 991                         opflag = SLAP_RESTRICT_OP_MODIFY;
 992                         updateop++;
 993                         break;
 994                 }
 995
 996                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 997                         session++;
 998                         starttls++;
 999                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
1000                         break;
1001                 }
1002
1003                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
1004                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
1005                         break;
1006                 }
1007
1008                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
1009                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
1010                         break;
1011                 }
1012
1013                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
1014                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
1015                         updateop++;
1016                         break;
1017                 }
1018
1019                 /* treat everything else as a modify */
1020                 opflag = SLAP_RESTRICT_OP_MODIFY;
1021                 updateop++;
1022                 break;
1023
1024         case LDAP_REQ_MODIFY:
1025                 updateop++;
1026                 opflag = SLAP_RESTRICT_OP_MODIFY;
1027                 break;
1028         case LDAP_REQ_RENAME:
1029                 updateop++;
1030                 opflag = SLAP_RESTRICT_OP_RENAME;
1031                 break;
1032         case LDAP_REQ_SEARCH:
1033                 opflag = SLAP_RESTRICT_OP_SEARCH;
1034                 break;
1035         case LDAP_REQ_UNBIND:
1036                 session++;
1037                 opflag = 0;
1038                 break;
1039         default:
1040                 rs->sr_text = "restrict operations internal error";
1041                 rs->sr_err = LDAP_OTHER;
1042                 return rs->sr_err;
1043         }
1044
1045         if ( !starttls ) {
1046                 /* these checks don't apply to StartTLS */
1047
1048                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1049                 if( op->o_transport_ssf < ssf->sss_transport ) {
1050                         rs->sr_text = op->o_transport_ssf
1051                                 ? "stronger transport confidentiality required"
1052                                 : "transport confidentiality required";
1053                         return rs->sr_err;
1054                 }
1055
1056                 if( op->o_tls_ssf < ssf->sss_tls ) {
1057                         rs->sr_text = op->o_tls_ssf
1058                                 ? "stronger TLS confidentiality required"
1059                                 : "TLS confidentiality required";
1060                         return rs->sr_err;
1061                 }
1062
1063
1064                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1065                         /* simple bind specific check */
1066                         if( op->o_ssf < ssf->sss_simple_bind ) {
1067                                 rs->sr_text = op->o_ssf
1068                                         ? "stronger confidentiality required"
1069                                         : "confidentiality required";
1070                                 return rs->sr_err;
1071                         }
1072                 }
1073
1074                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1075                         /* these checks don't apply to SASL bind */
1076
1077                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1078                                 rs->sr_text = op->o_sasl_ssf
1079                                         ? "stronger SASL confidentiality required"
1080                                         : "SASL confidentiality required";
1081                                 return rs->sr_err;
1082                         }
1083
1084                         if( op->o_ssf < ssf->sss_ssf ) {
1085                                 rs->sr_text = op->o_ssf
1086                                         ? "stronger confidentiality required"
1087                                         : "confidentiality required";
1088                                 return rs->sr_err;
1089                         }
1090                 }
1091
1092                 if( updateop ) {
1093                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1094                                 rs->sr_text = op->o_transport_ssf
1095                                         ? "stronger transport confidentiality required for update"
1096                                         : "transport confidentiality required for update";
1097                                 return rs->sr_err;
1098                         }
1099
1100                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1101                                 rs->sr_text = op->o_tls_ssf
1102                                         ? "stronger TLS confidentiality required for update"
1103                                         : "TLS confidentiality required for update";
1104                                 return rs->sr_err;
1105                         }
1106
1107                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1108                                 rs->sr_text = op->o_sasl_ssf
1109                                         ? "stronger SASL confidentiality required for update"
1110                                         : "SASL confidentiality required for update";
1111                                 return rs->sr_err;
1112                         }
1113
1114                         if( op->o_ssf < ssf->sss_update_ssf ) {
1115                                 rs->sr_text = op->o_ssf
1116                                         ? "stronger confidentiality required for update"
1117                                         : "confidentiality required for update";
1118                                 return rs->sr_err;
1119                         }
1120
1121                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1122                                 op->o_ndn.bv_len == 0 )
1123                         {
1124                                 rs->sr_text = "modifications require authentication";
1125                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1126                                 return rs->sr_err;
1127                         }
1128
1129 #ifdef SLAP_X_LISTENER_MOD
1130                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1131                                 /* no "w" mode means readonly */
1132                                 rs->sr_text = "modifications not allowed on this listener";
1133                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1134                                 return rs->sr_err;
1135                         }
1136 #endif /* SLAP_X_LISTENER_MOD */
1137                 }
1138         }
1139
1140         if ( !session ) {
1141                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1142
1143                 if( requires & SLAP_REQUIRE_STRONG ) {
1144                         /* should check mechanism */
1145                         if( ( op->o_transport_ssf < ssf->sss_transport
1146                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1147                                 || op->o_dn.bv_len == 0 )
1148                         {
1149                                 rs->sr_text = "strong(er) authentication required";
1150                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1151                                 return rs->sr_err;
1152                         }
1153                 }
1154
1155                 if( requires & SLAP_REQUIRE_SASL ) {
1156                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1157                                 rs->sr_text = "SASL authentication required";
1158                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1159                                 return rs->sr_err;
1160                         }
1161                 }
1162
1163                 if( requires & SLAP_REQUIRE_AUTHC ) {
1164                         if( op->o_dn.bv_len == 0 ) {
1165                                 rs->sr_text = "authentication required";
1166                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1167                                 return rs->sr_err;
1168                         }
1169                 }
1170
1171                 if( requires & SLAP_REQUIRE_BIND ) {
1172                         int version;
1173                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1174                         version = op->o_conn->c_protocol;
1175                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1176
1177                         if( !version ) {
1178                                 /* no bind has occurred */
1179                                 rs->sr_text = "BIND required";
1180                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1181                                 return rs->sr_err;
1182                         }
1183                 }
1184
1185                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1186                         if( op->o_protocol < LDAP_VERSION3 ) {
1187                                 /* no bind has occurred */
1188                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1189                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1190                                 return rs->sr_err;
1191                         }
1192                 }
1193
1194 #ifdef SLAP_X_LISTENER_MOD
1195                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1196                         if ( op->o_conn->c_listener &&
1197                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1198                 {
1199                                 /* no "x" mode means bind required */
1200                                 rs->sr_text = "bind required on this listener";
1201                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1202                                 return rs->sr_err;
1203                         }
1204                 }
1205
1206                 if ( !starttls && !updateop ) {
1207                         if ( op->o_conn->c_listener &&
1208                                 !( op->o_conn->c_listener->sl_perms &
1209                                         ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH )))
1210                         {
1211                                 /* no "r" mode means no read */
1212                                 rs->sr_text = "read not allowed on this listener";
1213                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1214                                 return rs->sr_err;
1215                         }
1216                 }
1217 #endif /* SLAP_X_LISTENER_MOD */
1218
1219         }
1220
1221         if( ( restrictops & opflag )
1222                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1223                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1224                         rs->sr_text = "read operations restricted";
1225                 } else if ( restrictops & exopflag ) {
1226                         rs->sr_text = "extended operation restricted";
1227                 } else {
1228                         rs->sr_text = "operation restricted";
1229                 }
1230                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1231                 return rs->sr_err;
1232         }
1233
1234         rs->sr_err = LDAP_SUCCESS;
1235         return rs->sr_err;
1236 }
1237
1238 int backend_check_referrals( Operation *op, SlapReply *rs )
1239 {
1240         rs->sr_err = LDAP_SUCCESS;
1241
1242         if( op->o_bd->be_chk_referrals ) {
1243                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1244
1245                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1246                         send_ldap_result( op, rs );
1247                 }
1248         }
1249
1250         return rs->sr_err;
1251 }
1252
1253 int
1254 be_entry_get_rw(
1255         Operation *op,
1256         struct berval *ndn,
1257         ObjectClass *oc,
1258         AttributeDescription *at,
1259         int rw,
1260         Entry **e )
1261 {
1262         int rc;
1263
1264         *e = NULL;
1265
1266         if (op->o_bd == NULL) {
1267                 rc = LDAP_NO_SUCH_OBJECT;
1268         } else if ( op->o_bd->be_fetch ) {
1269                 rc = ( op->o_bd->be_fetch )( op, ndn,
1270                         oc, at, rw, e );
1271         } else {
1272                 rc = LDAP_UNWILLING_TO_PERFORM;
1273         }
1274         return rc;
1275 }
1276
1277 int
1278 backend_group(
1279         Operation *op,
1280         Entry   *target,
1281         struct berval *gr_ndn,
1282         struct berval *op_ndn,
1283         ObjectClass *group_oc,
1284         AttributeDescription *group_at )
1285 {
1286         Entry *e;
1287         Attribute *a;
1288         int rc;
1289         GroupAssertion *g;
1290         Backend *be = op->o_bd;
1291
1292         if ( op->o_abandon ) return SLAPD_ABANDON;
1293
1294         op->o_bd = select_backend( gr_ndn, 0, 0 );
1295
1296         for (g = op->o_groups; g; g=g->ga_next) {
1297                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1298                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1299                         continue;
1300                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1301                         break;
1302         }
1303
1304         if (g) {
1305                 rc = g->ga_res;
1306                 goto done;
1307         }
1308
1309         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1310                 e = target;
1311                 rc = 0;
1312         } else {
1313                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1314         }
1315         if ( e ) {
1316                 a = attr_find( e->e_attrs, group_at );
1317                 if ( a ) {
1318                         /* If the attribute is a subtype of labeledURI, treat this as
1319                          * a dynamic group ala groupOfURLs
1320                          */
1321                         if (is_at_subtype( group_at->ad_type,
1322                                 slap_schema.si_ad_labeledURI->ad_type ) )
1323                         {
1324                                 int i;
1325                                 LDAPURLDesc *ludp;
1326                                 struct berval bv, nbase;
1327                                 Filter *filter;
1328                                 Entry *user;
1329                                 Backend *b2 = op->o_bd;
1330
1331                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1332                                         user = target;
1333                                 } else {
1334                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1335                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1336                                 }
1337
1338                                 if ( rc == 0 ) {
1339                                         rc = 1;
1340                                         for (i=0; a->a_vals[i].bv_val; i++) {
1341                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1342                                                         LDAP_SUCCESS )
1343                                                 {
1344                                                         continue;
1345                                                 }
1346                                                 nbase.bv_val = NULL;
1347                                                 /* host part must be empty */
1348                                                 /* attrs and extensions parts must be empty */
1349                                                 if (( ludp->lud_host && *ludp->lud_host ) ||
1350                                                         ludp->lud_attrs || ludp->lud_exts )
1351                                                 {
1352                                                         goto loopit;
1353                                                 }
1354                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1355                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1356                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1357                                                 {
1358                                                         goto loopit;
1359                                                 }
1360                                                 switch(ludp->lud_scope) {
1361                                                 case LDAP_SCOPE_BASE:
1362                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1363                                                         break;
1364                                                 case LDAP_SCOPE_ONELEVEL:
1365                                                         dnParent(op_ndn, &bv );
1366                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1367                                                         break;
1368                                                 case LDAP_SCOPE_SUBTREE:
1369                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1370                                                         break;
1371 #ifdef LDAP_SCOPE_SUBORDINATE
1372                                                 case LDAP_SCOPE_SUBORDINATE:
1373                                                         if ( dn_match( &nbase, op_ndn ) &&
1374                                                                 !dnIsSuffix(op_ndn, &nbase ))
1375                                                         {
1376                                                                 goto loopit;
1377                                                         }
1378 #endif
1379                                                 }
1380                                                 filter = str2filter_x( op, ludp->lud_filter );
1381                                                 if ( filter ) {
1382                                                         if ( test_filter( NULL, user, filter ) ==
1383                                                                 LDAP_COMPARE_TRUE )
1384                                                         {
1385                                                                 rc = 0;
1386                                                         }
1387                                                         filter_free_x( op, filter );
1388                                                 }
1389 loopit:
1390                                                 ldap_free_urldesc( ludp );
1391                                                 if ( nbase.bv_val ) {
1392                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1393                                                 }
1394                                                 if ( rc == 0 ) break;
1395                                         }
1396                                         if ( user != target ) {
1397                                                 be_entry_release_r( op, user );
1398                                         }
1399                                 }
1400                                 op->o_bd = b2;
1401                         } else {
1402                                 rc = value_find_ex( group_at,
1403                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1404                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1405                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1406                         }
1407                 } else {
1408                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1409                 }
1410                 if (e != target ) {
1411                         be_entry_release_r( op, e );
1412                 }
1413         } else {
1414                 rc = LDAP_NO_SUCH_OBJECT;
1415         }
1416
1417         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1418                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len,
1419                         op->o_tmpmemctx);
1420                 g->ga_be = op->o_bd;
1421                 g->ga_oc = group_oc;
1422                 g->ga_at = group_at;
1423                 g->ga_res = rc;
1424                 g->ga_len = gr_ndn->bv_len;
1425                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1426                 g->ga_next = op->o_groups;
1427                 op->o_groups = g;
1428         }
1429 done:
1430         op->o_bd = be;
1431         return rc;
1432 }
1433
1434 int
1435 backend_attribute(
1436         Operation *op,
1437         Entry   *target,
1438         struct berval   *edn,
1439         AttributeDescription *entry_at,
1440         BerVarray *vals )
1441 {
1442         Entry *e;
1443         Attribute *a;
1444         int i, j, rc = LDAP_SUCCESS;
1445         AccessControlState acl_state = ACL_STATE_INIT;
1446         Backend *be = op->o_bd;
1447
1448         op->o_bd = select_backend( edn, 0, 0 );
1449
1450         if ( target && dn_match( &target->e_nname, edn ) ) {
1451                 e = target;
1452         } else {
1453                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1454         }
1455
1456         if ( e ) {
1457                 a = attr_find( e->e_attrs, entry_at );
1458                 if ( a ) {
1459                         BerVarray v;
1460
1461                         if ( op->o_conn && access_allowed( op,
1462                                 e, entry_at, NULL, ACL_AUTH,
1463                                 &acl_state ) == 0 ) {
1464                                 rc = LDAP_INSUFFICIENT_ACCESS;
1465                                 goto freeit;
1466                         }
1467
1468                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1469
1470                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1471                                 op->o_tmpmemctx );
1472                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1473                                 if ( op->o_conn && access_allowed( op,
1474                                         e, entry_at,
1475                                         &a->a_nvals[i],
1476                                         ACL_AUTH, &acl_state ) == 0 ) {
1477                                         continue;
1478                                 }
1479                                 ber_dupbv_x( &v[j],
1480                                         &a->a_nvals[i], op->o_tmpmemctx );
1481                                 if (v[j].bv_val ) j++;
1482                         }
1483                         if (j == 0) {
1484                                 op->o_tmpfree( v, op->o_tmpmemctx );
1485                                 *vals = NULL;
1486                                 rc = LDAP_INSUFFICIENT_ACCESS;
1487                         } else {
1488                                 v[j].bv_val = NULL;
1489                                 v[j].bv_len = 0;
1490                                 *vals = v;
1491                                 rc = LDAP_SUCCESS;
1492                         }
1493                 }
1494 freeit:         if (e != target ) {
1495                         be_entry_release_r( op, e );
1496                 }
1497         }
1498
1499         op->o_bd = be;
1500         return rc;
1501 }
1502
1503 Attribute *backend_operational(
1504         Operation *op,
1505         SlapReply *rs,
1506         int opattrs     )
1507 {
1508         Attribute *a = NULL, **ap = &a;
1509
1510         /*
1511          * If operational attributes (allegedly) are required,
1512          * and the backend supports specific operational attributes,
1513          * add them to the attribute list
1514          */
1515         if ( opattrs || ( op->ors_attrs &&
1516                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1517                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1518                 ap = &(*ap)->a_next;
1519         }
1520
1521         if ( ( opattrs || op->ors_attrs ) && op->o_bd &&
1522                 op->o_bd->be_operational != NULL )
1523         {
1524                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1525         }
1526
1527         return a;
1528 }
1529