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