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