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
  45 static void init_group_pblock( Operation *op, Entry *target,
  46         Entry *e, struct berval *op_ndn, AttributeDescription *group_at );
  47 static int call_group_preop_plugins( Operation *op );
  48 static void call_group_postop_plugins( Operation *op );
  49 #endif /* LDAP_SLAPI */
  50
  51 /*
  52  * If a module is configured as dynamic, its header should not
  53  * get included into slapd. While this is a general rule and does
  54  * not have much of an effect in UNIX, this rule should be adhered
  55  * to for Windows, where dynamic object code should not be implicitly
  56  * imported into slapd without appropriate __declspec(dllimport) directives.
  57  */
  58
  59 #if SLAPD_BDB == SLAPD_MOD_STATIC
  60 #include "back-bdb/external.h"
  61 #endif
  62 #if SLAPD_DNSSRV == SLAPD_MOD_STATIC
  63 #include "back-dnssrv/external.h"
  64 #endif
  65 #if SLAPD_HDB == SLAPD_MOD_STATIC
  66 #include "back-hdb/external.h"
  67 #endif
  68 #if SLAPD_LDAP == SLAPD_MOD_STATIC
  69 #include "back-ldap/external.h"
  70 #endif
  71 #if SLAPD_LDBM == SLAPD_MOD_STATIC
  72 #include "back-ldbm/external.h"
  73 #endif
  74 #if SLAPD_META == SLAPD_MOD_STATIC
  75 #include "back-meta/external.h"
  76 #endif
  77 #if SLAPD_MONITOR == SLAPD_MOD_STATIC
  78 #include "back-monitor/external.h"
  79 #endif
  80 #if SLAPD_NULL == SLAPD_MOD_STATIC
  81 #include "back-null/external.h"
  82 #endif
  83 #if SLAPD_PASSWD == SLAPD_MOD_STATIC
  84 #include "back-passwd/external.h"
  85 #endif
  86 #if SLAPD_PERL == SLAPD_MOD_STATIC
  87 #include "back-perl/external.h"
  88 #endif
  89 #if SLAPD_RELAY == SLAPD_MOD_STATIC
  90 #include "back-relay/external.h"
  91 #endif
  92 #if SLAPD_SHELL == SLAPD_MOD_STATIC
  93 #include "back-shell/external.h"
  94 #endif
  95 #if SLAPD_TCL == SLAPD_MOD_STATIC
  96 #include "back-tcl/external.h"
  97 #endif
  98 #if SLAPD_SQL == SLAPD_MOD_STATIC
  99 #include "back-sql/external.h"
 100 #endif
 101 #if SLAPD_PRIVATE == SLAPD_MOD_STATIC
 102 #include "private/external.h"
 103 #endif
 104
 105 static BackendInfo binfo[] = {
 106 #if SLAPD_BDB == SLAPD_MOD_STATIC
 107         {"bdb", bdb_initialize},
 108 #endif
 109 #if SLAPD_DNSSRV == SLAPD_MOD_STATIC
 110         {"dnssrv",      dnssrv_back_initialize},
 111 #endif
 112 #if SLAPD_HDB == SLAPD_MOD_STATIC
 113         {"hdb", hdb_initialize},
 114 #endif
 115 #if SLAPD_LDAP == SLAPD_MOD_STATIC
 116         {"ldap",        ldap_back_initialize},
 117 #endif
 118 #if SLAPD_LDBM == SLAPD_MOD_STATIC
 119         {"ldbm",        ldbm_back_initialize},
 120 #endif
 121 #if SLAPD_META == SLAPD_MOD_STATIC
 122         {"meta",        meta_back_initialize},
 123 #endif
 124 #if SLAPD_MONITOR == SLAPD_MOD_STATIC
 125         {"monitor",     monitor_back_initialize},
 126 #endif
 127 #if SLAPD_NULL == SLAPD_MOD_STATIC
 128         {"null",        null_back_initialize},
 129 #endif
 130 #if SLAPD_PASSWD == SLAPD_MOD_STATIC
 131         {"passwd",      passwd_back_initialize},
 132 #endif
 133 #if SLAPD_PERL == SLAPD_MOD_STATIC
 134         {"perl",        perl_back_initialize},
 135 #endif
 136 #if SLAPD_RELAY == SLAPD_MOD_STATIC
 137         {"relay",       relay_back_initialize},
 138 #endif
 139 #if SLAPD_SHELL == SLAPD_MOD_STATIC
 140         {"shell",       shell_back_initialize},
 141 #endif
 142 #if SLAPD_TCL == SLAPD_MOD_STATIC
 143         {"tcl",         tcl_back_initialize},
 144 #endif
 145 #if SLAPD_SQL == SLAPD_MOD_STATIC
 146         {"sql",         backsql_initialize},
 147 #endif
 148         /* for any private backend */
 149 #if SLAPD_PRIVATE == SLAPD_MOD_STATIC
 150         {"private",     private_back_initialize},
 151 #endif
 152         {NULL}
 153 };
 154
 155 int                     nBackendInfo = 0;
 156 BackendInfo     *backendInfo = NULL;
 157
 158 int                     nBackendDB = 0;
 159 BackendDB       *backendDB = NULL;
 160
 161 ldap_pvt_thread_pool_t  syncrepl_pool;
 162 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 163
 164 int backend_init(void)
 165 {
 166         int rc = -1;
 167
 168         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 169
 170         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 171                 /* already initialized */
 172 #ifdef NEW_LOGGING
 173                 LDAP_LOG( BACKEND, ERR,
 174                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 175 #else
 176                 Debug( LDAP_DEBUG_ANY,
 177                         "backend_init: already initialized.\n", 0, 0, 0 );
 178 #endif
 179                 return -1;
 180         }
 181
 182         for( ;
 183                 binfo[nBackendInfo].bi_type != NULL;
 184                 nBackendInfo++ )
 185         {
 186                 assert( binfo[nBackendInfo].bi_init );
 187
 188                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 189
 190                 if(rc != 0) {
 191 #ifdef NEW_LOGGING
 192                         LDAP_LOG( BACKEND, INFO,
 193                                 "backend_init:  initialized for type \"%s\"\n",
 194                                 binfo[nBackendInfo].bi_type, 0, 0 );
 195 #else
 196                         Debug( LDAP_DEBUG_ANY,
 197                                 "backend_init: initialized for type \"%s\"\n",
 198                                 binfo[nBackendInfo].bi_type, 0, 0 );
 199 #endif
 200                         /* destroy those we've already inited */
 201                         for( nBackendInfo--;
 202                                 nBackendInfo >= 0 ;
 203                                 nBackendInfo-- )
 204                         {
 205                                 if ( binfo[nBackendInfo].bi_destroy ) {
 206                                         binfo[nBackendInfo].bi_destroy(
 207                                                 &binfo[nBackendInfo] );
 208                                 }
 209                         }
 210                         return rc;
 211                 }
 212         }
 213
 214         if ( nBackendInfo > 0) {
 215                 backendInfo = binfo;
 216                 return 0;
 217         }
 218
 219 #ifdef SLAPD_MODULES
 220         return 0;
 221 #else
 222
 223 #ifdef NEW_LOGGING
 224         LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
 225 #else
 226         Debug( LDAP_DEBUG_ANY,
 227                 "backend_init: failed\n",
 228                 0, 0, 0 );
 229 #endif
 230
 231         return rc;
 232 #endif /* SLAPD_MODULES */
 233 }
 234
 235 int backend_add(BackendInfo *aBackendInfo)
 236 {
 237         int rc = 0;
 238
 239         if ( aBackendInfo->bi_init == NULL ) {
 240 #ifdef NEW_LOGGING
 241                 LDAP_LOG( BACKEND, ERR, "backend_add: "
 242                         "backend type \"%s\" does not have the (mandatory)init function\n",
 243                         aBackendInfo->bi_type, 0, 0 );
 244 #else
 245                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 246                         "backend type \"%s\" does not have the (mandatory)init function\n",
 247                         aBackendInfo->bi_type, 0, 0 );
 248 #endif
 249                 return -1;
 250         }
 251
 252    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 253 #ifdef NEW_LOGGING
 254                 LDAP_LOG( BACKEND, ERR,
 255                         "backend_add:  initialization for type \"%s\" failed\n",
 256                         aBackendInfo->bi_type, 0, 0 );
 257 #else
 258                 Debug( LDAP_DEBUG_ANY,
 259                         "backend_add:  initialization for type \"%s\" failed\n",
 260                         aBackendInfo->bi_type, 0, 0 );
 261 #endif
 262                 return rc;
 263    }
 264
 265         /* now add the backend type to the Backend Info List */
 266         {
 267                 BackendInfo *newBackendInfo = 0;
 268
 269                 /* if backendInfo == binfo no deallocation of old backendInfo */
 270                 if (backendInfo == binfo) {
 271                         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 272                         AC_MEMCPY(newBackendInfo, backendInfo,
 273                                 sizeof(BackendInfo) * nBackendInfo);
 274                 } else {
 275                         newBackendInfo = ch_realloc(backendInfo,
 276                                 sizeof(BackendInfo) * (nBackendInfo + 1));
 277                 }
 278
 279                 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 280                         sizeof(BackendInfo));
 281                 backendInfo = newBackendInfo;
 282                 nBackendInfo++;
 283                 return 0;
 284         }
 285 }
 286
 287 /* startup a specific backend database */
 288 int backend_startup_one(Backend *be)
 289 {
 290         int rc = 0;
 291
 292         assert(be);
 293
 294         be->be_pending_csn_list = (struct be_pcl *)
 295                 ch_calloc( 1, sizeof( struct be_pcl ));
 296         build_new_dn( &be->be_context_csn, be->be_nsuffix,
 297                 (struct berval *)&slap_ldapsync_cn_bv, NULL );
 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         if ( be->bd_info->bi_db_open ) {
 312                 rc = be->bd_info->bi_db_open( be );
 313                 if ( rc != 0 ) {
 314 #ifdef NEW_LOGGING
 315                         LDAP_LOG( BACKEND, CRIT,
 316                                 "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 317 #else
 318                         Debug( LDAP_DEBUG_ANY,
 319                                 "backend_startup: bi_db_open failed! (%d)\n",
 320                                 rc, 0, 0 );
 321 #endif
 322                 }
 323         }
 324         return rc;
 325 }
 326
 327 int backend_startup(Backend *be)
 328 {
 329         int i;
 330         int rc = 0;
 331
 332         if( ! ( nBackendDB > 0 ) ) {
 333                 /* no databases */
 334 #ifdef NEW_LOGGING
 335                 LDAP_LOG( BACKEND, INFO,
 336                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 337 #else
 338                 Debug( LDAP_DEBUG_ANY,
 339                         "backend_startup: %d databases to startup.\n",
 340                         nBackendDB, 0, 0 );
 341 #endif
 342                 return 1;
 343         }
 344
 345         if(be != NULL) {
 346                 if ( be->bd_info->bi_open ) {
 347                         rc = be->bd_info->bi_open( be->bd_info );
 348                         if ( rc != 0 ) {
 349 #ifdef NEW_LOGGING
 350                                 LDAP_LOG( BACKEND, CRIT,
 351                                         "backend_startup: bi_open failed!\n", 0, 0, 0 );
 352 #else
 353                                 Debug( LDAP_DEBUG_ANY,
 354                                         "backend_startup: bi_open failed!\n",
 355                                         0, 0, 0 );
 356 #endif
 357
 358                                 return rc;
 359                         }
 360                 }
 361
 362                 return backend_startup_one( be );
 363         }
 364
 365         /* open each backend type */
 366         for( i = 0; i < nBackendInfo; i++ ) {
 367                 if( backendInfo[i].bi_nDB == 0) {
 368                         /* no database of this type, don't open */
 369                         continue;
 370                 }
 371
 372                 if( backendInfo[i].bi_open ) {
 373                         rc = backendInfo[i].bi_open(
 374                                 &backendInfo[i] );
 375                         if ( rc != 0 ) {
 376 #ifdef NEW_LOGGING
 377                                 LDAP_LOG( BACKEND, CRIT,
 378                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 379 #else
 380                                 Debug( LDAP_DEBUG_ANY,
 381                                         "backend_startup: bi_open %d failed!\n",
 382                                         i, 0, 0 );
 383 #endif
 384                                 return rc;
 385                         }
 386                 }
 387         }
 388
 389         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 390         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 391         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 392
 393         /* open each backend database */
 394         for( i = 0; i < nBackendDB; i++ ) {
 395                 if ( backendDB[i].be_suffix == NULL ) {
 396 #ifdef NEW_LOGGING
 397                         LDAP_LOG( BACKEND, CRIT,
 398                                 "backend_startup: warning, database %d (%s) "
 399                                 "has no suffix\n",
 400                                 i, backendDB[i].bd_info->bi_type, 0 );
 401 #else
 402                         Debug( LDAP_DEBUG_ANY,
 403                                 "backend_startup: warning, database %d (%s) "
 404                                 "has no suffix\n",
 405                                 i, backendDB[i].bd_info->bi_type, 0 );
 406 #endif
 407                 }
 408                 /* append global access controls */
 409                 acl_append( &backendDB[i].be_acl, global_acl );
 410
 411                 rc = backend_startup_one( &backendDB[i] );
 412
 413                 if ( rc ) return rc;
 414
 415
 416                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 417                         syncinfo_t *si;
 418
 419                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 420                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 421 #ifdef NEW_LOGGING
 422                                 LDAP_LOG( BACKEND, CRIT,
 423                                         "backend_startup: database(%d) does not support "
 424                                         "operations required for syncrepl", i, 0, 0 );
 425 #else
 426                                 Debug( LDAP_DEBUG_ANY,
 427                                         "backend_startup: database(%d) does not support "
 428                                         "operations required for syncrepl", i, 0, 0 );
 429 #endif
 430                                 continue;
 431                         }
 432
 433                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 434                                 si->si_be = &backendDB[i];
 435                                 init_syncrepl( si );
 436                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 437                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 438                                                 si->si_interval, do_syncrepl, (void *) si );
 439                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 440                         }
 441                 }
 442         }
 443
 444         return rc;
 445 }
 446
 447 int backend_num( Backend *be )
 448 {
 449         int i;
 450
 451         if( be == NULL ) return -1;
 452
 453         for( i = 0; i < nBackendDB; i++ ) {
 454                 if( be == &backendDB[i] ) return i;
 455         }
 456         return -1;
 457 }
 458
 459 int backend_shutdown( Backend *be )
 460 {
 461         int i;
 462         int rc = 0;
 463
 464         if( be != NULL ) {
 465                 /* shutdown a specific backend database */
 466
 467                 if ( be->bd_info->bi_nDB == 0 ) {
 468                         /* no database of this type, we never opened it */
 469                         return 0;
 470                 }
 471
 472                 if ( be->bd_info->bi_db_close ) {
 473                         be->bd_info->bi_db_close( be );
 474                 }
 475
 476                 if( be->bd_info->bi_close ) {
 477                         be->bd_info->bi_close( be->bd_info );
 478                 }
 479
 480                 return 0;
 481         }
 482
 483         /* close each backend database */
 484         for( i = 0; i < nBackendDB; i++ ) {
 485                 if ( backendDB[i].bd_info->bi_db_close ) {
 486                         backendDB[i].bd_info->bi_db_close(
 487                                 &backendDB[i] );
 488                 }
 489
 490                 if(rc != 0) {
 491 #ifdef NEW_LOGGING
 492                         LDAP_LOG( BACKEND, NOTICE,
 493                                 "backend_shutdown: bi_close %s failed!\n",
 494                                 backendDB[i].be_type, 0, 0 );
 495 #else
 496                         Debug( LDAP_DEBUG_ANY,
 497                                 "backend_close: bi_close %s failed!\n",
 498                                 backendDB[i].be_type, 0, 0 );
 499 #endif
 500                 }
 501         }
 502
 503         /* close each backend type */
 504         for( i = 0; i < nBackendInfo; i++ ) {
 505                 if( backendInfo[i].bi_nDB == 0 ) {
 506                         /* no database of this type */
 507                         continue;
 508                 }
 509
 510                 if( backendInfo[i].bi_close ) {
 511                         backendInfo[i].bi_close(
 512                                 &backendInfo[i] );
 513                 }
 514         }
 515
 516         return 0;
 517 }
 518
 519 int backend_destroy(void)
 520 {
 521         int i;
 522         BackendDB *bd;
 523         syncinfo_t *si_entry;
 524
 525         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 526
 527         /* destroy each backend database */
 528         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 529
 530                 while ( !LDAP_STAILQ_EMPTY( &bd->be_syncinfo )) {
 531                         si_entry = LDAP_STAILQ_FIRST( &bd->be_syncinfo );
 532                         LDAP_STAILQ_REMOVE_HEAD( &bd->be_syncinfo, si_next );
 533                         syncinfo_free( si_entry );
 534                 }
 535
 536                 if ( bd->bd_info->bi_db_destroy ) {
 537                         bd->bd_info->bi_db_destroy( bd );
 538                 }
 539                 ber_bvarray_free( bd->be_suffix );
 540                 ber_bvarray_free( bd->be_nsuffix );
 541                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 542                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 543                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 544                 if ( bd->be_context_csn.bv_val ) free( bd->be_context_csn.bv_val );
 545                 acl_destroy( bd->be_acl, global_acl );
 546         }
 547         free( backendDB );
 548
 549         /* destroy each backend type */
 550         for( i = 0; i < nBackendInfo; i++ ) {
 551                 if( backendInfo[i].bi_destroy ) {
 552                         backendInfo[i].bi_destroy(
 553                                 &backendInfo[i] );
 554                 }
 555         }
 556
 557 #ifdef SLAPD_MODULES
 558         if (backendInfo != binfo) {
 559            free(backendInfo);
 560         }
 561 #endif /* SLAPD_MODULES */
 562
 563         nBackendInfo = 0;
 564         backendInfo = NULL;
 565
 566         return 0;
 567 }
 568
 569 BackendInfo* backend_info(const char *type)
 570 {
 571         int i;
 572
 573         /* search for the backend type */
 574         for( i = 0; i < nBackendInfo; i++ ) {
 575                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 576                         return &backendInfo[i];
 577                 }
 578         }
 579
 580         return NULL;
 581 }
 582
 583
 584 BackendDB *
 585 backend_db_init(
 586     const char  *type )
 587 {
 588         Backend *be;
 589         BackendInfo *bi = backend_info(type);
 590         int     rc = 0;
 591
 592         if( bi == NULL ) {
 593                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 594                 return NULL;
 595         }
 596
 597         be = backendDB;
 598
 599         backendDB = (BackendDB *) ch_realloc(
 600                         (char *) backendDB,
 601                     (nBackendDB + 1) * sizeof(Backend) );
 602
 603         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 604
 605         /* did realloc move our table? if so, fix up dependent pointers */
 606         if ( be != backendDB ) {
 607                 int i;
 608                 for ( i=0, be=backendDB; i<nbackends; i++, be++ ) {
 609                         be->be_pcl_mutexp = &be->be_pcl_mutex;
 610                 }
 611         }
 612
 613         be = &backends[nbackends++];
 614
 615         be->bd_info = bi;
 616         be->be_def_limit = deflimit;
 617         be->be_dfltaccess = global_default_access;
 618
 619         be->be_restrictops = global_restrictops;
 620         be->be_requires = global_requires;
 621         be->be_ssf_set = global_ssf_set;
 622
 623         be->be_context_csn.bv_len = 0;
 624         be->be_context_csn.bv_val = NULL;
 625         be->be_pcl_mutexp = &be->be_pcl_mutex;
 626         ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
 627
 628         LDAP_STAILQ_INIT( &be->be_syncinfo );
 629
 630         /* assign a default depth limit for alias deref */
 631         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 632
 633         if(bi->bi_db_init) {
 634                 rc = bi->bi_db_init( be );
 635         }
 636
 637         if(rc != 0) {
 638                 fprintf( stderr, "database init failed (%s)\n", type );
 639                 nbackends--;
 640                 return NULL;
 641         }
 642
 643         bi->bi_nDB++;
 644         return( be );
 645 }
 646
 647 void
 648 be_db_close( void )
 649 {
 650         int     i;
 651
 652         for ( i = 0; i < nbackends; i++ ) {
 653                 if ( backends[i].bd_info->bi_db_close ) {
 654                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 655                 }
 656         }
 657 }
 658
 659 Backend *
 660 select_backend(
 661         struct berval * dn,
 662         int manageDSAit,
 663         int noSubs )
 664 {
 665         int     i, j;
 666         ber_len_t len, dnlen = dn->bv_len;
 667         Backend *be = NULL;
 668
 669         for ( i = 0; i < nbackends; i++ ) {
 670                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 671                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 672                 {
 673                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 674                                 && noSubs )
 675                         {
 676                                 continue;
 677                         }
 678
 679                         len = backends[i].be_nsuffix[j].bv_len;
 680
 681                         if ( len > dnlen ) {
 682                                 /* suffix is longer than DN */
 683                                 continue;
 684                         }
 685
 686                         /*
 687                          * input DN is normalized, so the separator check
 688                          * need not look at escaping
 689                          */
 690                         if ( len && len < dnlen &&
 691                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 692                         {
 693                                 continue;
 694                         }
 695
 696                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 697                                 &dn->bv_val[dnlen-len] ) == 0 )
 698                         {
 699                                 if( be == NULL ) {
 700                                         be = &backends[i];
 701
 702                                         if( manageDSAit && len == dnlen &&
 703                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 704                                                 continue;
 705                                         }
 706                                 } else {
 707                                         be = &backends[i];
 708                                 }
 709                                 return be;
 710                         }
 711                 }
 712         }
 713
 714         return be;
 715 }
 716
 717 int
 718 be_issuffix(
 719     Backend *be,
 720     struct berval *bvsuffix )
 721 {
 722         int     i;
 723
 724         for ( i = 0;
 725                 be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL;
 726                 i++ )
 727         {
 728                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 729                         return( 1 );
 730                 }
 731         }
 732
 733         return( 0 );
 734 }
 735
 736 int
 737 be_isroot_dn( Backend *be, struct berval *ndn )
 738 {
 739         if ( !ndn->bv_len ) {
 740                 return( 0 );
 741         }
 742
 743         if ( !be->be_rootndn.bv_len ) {
 744                 return( 0 );
 745         }
 746
 747         return dn_match( &be->be_rootndn, ndn );
 748 }
 749
 750 int
 751 be_sync_update( Operation *op )
 752 {
 753         return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) );
 754 }
 755
 756 int
 757 be_slurp_update( Operation *op )
 758 {
 759         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 760                 be_isupdate_dn( op->o_bd, &op->o_ndn ));
 761 }
 762
 763 int
 764 be_shadow_update( Operation *op )
 765 {
 766         return ( SLAP_SHADOW( op->o_bd ) &&
 767                 ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn )));
 768 }
 769
 770 int
 771 be_isupdate_dn( Backend *be, struct berval *ndn )
 772 {
 773         if ( !ndn->bv_len ) return( 0 );
 774
 775         if ( !be->be_update_ndn.bv_len ) return( 0 );
 776
 777         return dn_match( &be->be_update_ndn, ndn );
 778 }
 779
 780 struct berval *
 781 be_root_dn( Backend *be )
 782 {
 783         return &be->be_rootdn;
 784 }
 785
 786 int
 787 be_isroot( Operation *op )
 788 {
 789         return be_isroot_dn( op->o_bd, &op->o_ndn );
 790 }
 791
 792 int
 793 be_isroot_pw( Operation *op )
 794 {
 795         int result;
 796         char *errmsg;
 797
 798         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 799                 return 0;
 800         }
 801
 802         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 803                 return 0;
 804         }
 805
 806 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 807         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 808 #ifdef SLAPD_SPASSWD
 809         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 810 #endif
 811 #endif
 812
 813         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 814
 815 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 816 #ifdef SLAPD_SPASSWD
 817         lutil_passwd_sasl_conn = NULL;
 818 #endif
 819         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 820 #endif
 821
 822         return result == 0;
 823 }
 824
 825 int
 826 be_entry_release_rw(
 827         Operation *op,
 828         Entry *e,
 829         int rw )
 830 {
 831         if ( op->o_bd->be_release ) {
 832                 /* free and release entry from backend */
 833                 return op->o_bd->be_release( op, e, rw );
 834         } else {
 835                 /* free entry */
 836                 entry_free( e );
 837                 return 0;
 838         }
 839 }
 840
 841 int
 842 backend_unbind( Operation *op, SlapReply *rs )
 843 {
 844         int             i;
 845
 846         for ( i = 0; i < nbackends; i++ ) {
 847 #if defined( LDAP_SLAPI )
 848                 if ( op->o_pb ) {
 849                         int rc;
 850                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 851                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 852                         rc = slapi_int_call_plugins( &backends[i],
 853                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 854                         if ( rc < 0 ) {
 855                                 /*
 856                                  * A preoperation plugin failure will abort the
 857                                  * entire operation.
 858                                  */
 859 #ifdef NEW_LOGGING
 860                                 LDAP_LOG( OPERATION, INFO,
 861                                         "do_bind: Unbind preoperation plugin failed\n",
 862                                         0, 0, 0);
 863 #else
 864                                 Debug(LDAP_DEBUG_TRACE,
 865                                         "do_bind: Unbind preoperation plugin failed\n",
 866                                         0, 0, 0);
 867 #endif
 868                                 return 0;
 869                         }
 870                 }
 871 #endif /* defined( LDAP_SLAPI ) */
 872
 873                 if ( backends[i].be_unbind ) {
 874                         op->o_bd = &backends[i];
 875                         (*backends[i].be_unbind)( op, rs );
 876                 }
 877
 878 #if defined( LDAP_SLAPI )
 879                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 880                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 881                 {
 882 #ifdef NEW_LOGGING
 883                         LDAP_LOG( OPERATION, INFO,
 884                                 "do_unbind: Unbind postoperation plugins failed\n",
 885                                 0, 0, 0);
 886 #else
 887                         Debug(LDAP_DEBUG_TRACE,
 888                                 "do_unbind: Unbind postoperation plugins failed\n",
 889                                 0, 0, 0);
 890 #endif
 891                 }
 892 #endif /* defined( LDAP_SLAPI ) */
 893         }
 894
 895         return 0;
 896 }
 897
 898 int
 899 backend_connection_init(
 900         Connection   *conn )
 901 {
 902         int     i;
 903
 904         for ( i = 0; i < nbackends; i++ ) {
 905                 if ( backends[i].be_connection_init ) {
 906                         (*backends[i].be_connection_init)( &backends[i], conn);
 907                 }
 908         }
 909
 910         return 0;
 911 }
 912
 913 int
 914 backend_connection_destroy(
 915         Connection   *conn )
 916 {
 917         int     i;
 918
 919         for ( i = 0; i < nbackends; i++ ) {
 920                 if ( backends[i].be_connection_destroy ) {
 921                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 922                 }
 923         }
 924
 925         return 0;
 926 }
 927
 928 static int
 929 backend_check_controls(
 930         Operation *op,
 931         SlapReply *rs )
 932 {
 933         LDAPControl **ctrls = op->o_ctrls;
 934         rs->sr_err = LDAP_SUCCESS;
 935
 936         if( ctrls ) {
 937                 for( ; *ctrls != NULL ; ctrls++ ) {
 938                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 939                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 940                         {
 941                                 rs->sr_text = "control unavailable in context";
 942                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 943                                 break;
 944                         }
 945                 }
 946         }
 947
 948         return rs->sr_err;
 949 }
 950
 951 int
 952 backend_check_restrictions(
 953         Operation *op,
 954         SlapReply *rs,
 955         struct berval *opdata )
 956 {
 957         slap_mask_t restrictops;
 958         slap_mask_t requires;
 959         slap_mask_t opflag;
 960         slap_ssf_set_t *ssf;
 961         int updateop = 0;
 962         int starttls = 0;
 963         int session = 0;
 964
 965         if( op->o_bd ) {
 966                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 967                         return rs->sr_err;
 968                 }
 969
 970                 restrictops = op->o_bd->be_restrictops;
 971                 requires = op->o_bd->be_requires;
 972                 ssf = &op->o_bd->be_ssf_set;
 973
 974         } else {
 975                 restrictops = global_restrictops;
 976                 requires = global_requires;
 977                 ssf = &global_ssf_set;
 978         }
 979
 980         switch( op->o_tag ) {
 981         case LDAP_REQ_ADD:
 982                 opflag = SLAP_RESTRICT_OP_ADD;
 983                 updateop++;
 984                 break;
 985         case LDAP_REQ_BIND:
 986                 opflag = SLAP_RESTRICT_OP_BIND;
 987                 session++;
 988                 break;
 989         case LDAP_REQ_COMPARE:
 990                 opflag = SLAP_RESTRICT_OP_COMPARE;
 991                 break;
 992         case LDAP_REQ_DELETE:
 993                 updateop++;
 994                 opflag = SLAP_RESTRICT_OP_DELETE;
 995                 break;
 996         case LDAP_REQ_EXTENDED:
 997                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 998
 999                 if( !opdata ) {
1000                         /* treat unspecified as a modify */
1001                         opflag = SLAP_RESTRICT_OP_MODIFY;
1002                         updateop++;
1003                         break;
1004                 }
1005
1006                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
1007                         session++;
1008                         starttls++;
1009                         break;
1010                 }
1011
1012                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
1013                         break;
1014                 }
1015
1016                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
1017                         break;
1018                 }
1019
1020                 /* treat everything else as a modify */
1021                 opflag = SLAP_RESTRICT_OP_MODIFY;
1022                 updateop++;
1023                 break;
1024
1025         case LDAP_REQ_MODIFY:
1026                 updateop++;
1027                 opflag = SLAP_RESTRICT_OP_MODIFY;
1028                 break;
1029         case LDAP_REQ_RENAME:
1030                 updateop++;
1031                 opflag = SLAP_RESTRICT_OP_RENAME;
1032                 break;
1033         case LDAP_REQ_SEARCH:
1034                 opflag = SLAP_RESTRICT_OP_SEARCH;
1035                 break;
1036         case LDAP_REQ_UNBIND:
1037                 session++;
1038                 opflag = 0;
1039                 break;
1040         default:
1041                 rs->sr_text = "restrict operations internal error";
1042                 rs->sr_err = LDAP_OTHER;
1043                 return rs->sr_err;
1044         }
1045
1046         if ( !starttls ) {
1047                 /* these checks don't apply to StartTLS */
1048
1049                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1050                 if( op->o_transport_ssf < ssf->sss_transport ) {
1051                         rs->sr_text = op->o_transport_ssf
1052                                 ? "stronger transport confidentiality required"
1053                                 : "transport confidentiality required";
1054                         return rs->sr_err;
1055                 }
1056
1057                 if( op->o_tls_ssf < ssf->sss_tls ) {
1058                         rs->sr_text = op->o_tls_ssf
1059                                 ? "stronger TLS confidentiality required"
1060                                 : "TLS confidentiality required";
1061                         return rs->sr_err;
1062                 }
1063
1064
1065                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1066                         /* simple bind specific check */
1067                         if( op->o_ssf < ssf->sss_simple_bind ) {
1068                                 rs->sr_text = op->o_ssf
1069                                         ? "stronger confidentiality required"
1070                                         : "confidentiality required";
1071                                 return rs->sr_err;
1072                         }
1073                 }
1074
1075                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1076                         /* these checks don't apply to SASL bind */
1077
1078                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1079                                 rs->sr_text = op->o_sasl_ssf
1080                                         ? "stronger SASL confidentiality required"
1081                                         : "SASL confidentiality required";
1082                                 return rs->sr_err;
1083                         }
1084
1085                         if( op->o_ssf < ssf->sss_ssf ) {
1086                                 rs->sr_text = op->o_ssf
1087                                         ? "stronger confidentiality required"
1088                                         : "confidentiality required";
1089                                 return rs->sr_err;
1090                         }
1091                 }
1092
1093                 if( updateop ) {
1094                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1095                                 rs->sr_text = op->o_transport_ssf
1096                                         ? "stronger transport confidentiality required for update"
1097                                         : "transport confidentiality required for update";
1098                                 return rs->sr_err;
1099                         }
1100
1101                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1102                                 rs->sr_text = op->o_tls_ssf
1103                                         ? "stronger TLS confidentiality required for update"
1104                                         : "TLS confidentiality required for update";
1105                                 return rs->sr_err;
1106                         }
1107
1108                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1109                                 rs->sr_text = op->o_sasl_ssf
1110                                         ? "stronger SASL confidentiality required for update"
1111                                         : "SASL confidentiality required for update";
1112                                 return rs->sr_err;
1113                         }
1114
1115                         if( op->o_ssf < ssf->sss_update_ssf ) {
1116                                 rs->sr_text = op->o_ssf
1117                                         ? "stronger confidentiality required for update"
1118                                         : "confidentiality required for update";
1119                                 return rs->sr_err;
1120                         }
1121
1122                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1123                                 op->o_ndn.bv_len == 0 )
1124                         {
1125                                 rs->sr_text = "modifications require authentication";
1126                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1127                                 return rs->sr_err;
1128                         }
1129
1130 #ifdef SLAP_X_LISTENER_MOD
1131                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1132                                 /* no "w" mode means readonly */
1133                                 rs->sr_text = "modifications not allowed on this listener";
1134                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1135                                 return rs->sr_err;
1136                         }
1137 #endif /* SLAP_X_LISTENER_MOD */
1138                 }
1139         }
1140
1141         if ( !session ) {
1142                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1143
1144                 if( requires & SLAP_REQUIRE_STRONG ) {
1145                         /* should check mechanism */
1146                         if( ( op->o_transport_ssf < ssf->sss_transport
1147                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1148                                 || op->o_dn.bv_len == 0 )
1149                         {
1150                                 rs->sr_text = "strong(er) authentication required";
1151                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1152                                 return rs->sr_err;
1153                         }
1154                 }
1155
1156                 if( requires & SLAP_REQUIRE_SASL ) {
1157                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1158                                 rs->sr_text = "SASL authentication required";
1159                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1160                                 return rs->sr_err;
1161                         }
1162                 }
1163
1164                 if( requires & SLAP_REQUIRE_AUTHC ) {
1165                         if( op->o_dn.bv_len == 0 ) {
1166                                 rs->sr_text = "authentication required";
1167                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1168                                 return rs->sr_err;
1169                         }
1170                 }
1171
1172                 if( requires & SLAP_REQUIRE_BIND ) {
1173                         int version;
1174                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1175                         version = op->o_conn->c_protocol;
1176                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1177
1178                         if( !version ) {
1179                                 /* no bind has occurred */
1180                                 rs->sr_text = "BIND required";
1181                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1182                                 return rs->sr_err;
1183                         }
1184                 }
1185
1186                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1187                         if( op->o_protocol < LDAP_VERSION3 ) {
1188                                 /* no bind has occurred */
1189                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1190                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1191                                 return rs->sr_err;
1192                         }
1193                 }
1194
1195 #ifdef SLAP_X_LISTENER_MOD
1196                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1197                         if ( op->o_conn->c_listener &&
1198                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1199                 {
1200                                 /* no "x" mode means bind required */
1201                                 rs->sr_text = "bind required on this listener";
1202                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1203                                 return rs->sr_err;
1204                         }
1205                 }
1206
1207                 if ( !starttls && !updateop ) {
1208                         if ( op->o_conn->c_listener &&
1209                                 !( op->o_conn->c_listener->sl_perms &
1210                                         ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH )))
1211                         {
1212                                 /* no "r" mode means no read */
1213                                 rs->sr_text = "read not allowed on this listener";
1214                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1215                                 return rs->sr_err;
1216                         }
1217                 }
1218 #endif /* SLAP_X_LISTENER_MOD */
1219
1220         }
1221
1222         if( restrictops & opflag ) {
1223                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1224                         rs->sr_text = "read operations restricted";
1225                 } else {
1226                         rs->sr_text = "operation restricted";
1227                 }
1228                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1229                 return rs->sr_err;
1230         }
1231
1232         rs->sr_err = LDAP_SUCCESS;
1233         return rs->sr_err;
1234 }
1235
1236 int backend_check_referrals( Operation *op, SlapReply *rs )
1237 {
1238         rs->sr_err = LDAP_SUCCESS;
1239
1240         if( op->o_bd->be_chk_referrals ) {
1241                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1242
1243                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1244                         send_ldap_result( op, rs );
1245                 }
1246         }
1247
1248         return rs->sr_err;
1249 }
1250
1251 int
1252 be_entry_get_rw(
1253         Operation *op,
1254         struct berval *ndn,
1255         ObjectClass *oc,
1256         AttributeDescription *at,
1257         int rw,
1258         Entry **e )
1259 {
1260         int rc;
1261
1262         *e = NULL;
1263
1264         if (op->o_bd == NULL) {
1265                 rc = LDAP_NO_SUCH_OBJECT;
1266         } else if ( op->o_bd->be_fetch ) {
1267                 rc = ( op->o_bd->be_fetch )( op, ndn,
1268                         oc, at, rw, e );
1269         } else {
1270                 rc = LDAP_UNWILLING_TO_PERFORM;
1271         }
1272         return rc;
1273 }
1274
1275 int
1276 backend_group(
1277         Operation *op,
1278         Entry   *target,
1279         struct berval *gr_ndn,
1280         struct berval *op_ndn,
1281         ObjectClass *group_oc,
1282         AttributeDescription *group_at )
1283 {
1284         Entry *e;
1285         Attribute *a;
1286         int rc;
1287         GroupAssertion *g;
1288         Backend *be = op->o_bd;
1289
1290         if ( op->o_abandon ) return SLAPD_ABANDON;
1291
1292         op->o_bd = select_backend( gr_ndn, 0, 0 );
1293
1294         for (g = op->o_groups; g; g=g->ga_next) {
1295                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1296                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1297                         continue;
1298                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1299                         break;
1300         }
1301
1302         if (g) {
1303                 rc = g->ga_res;
1304                 goto done;
1305         }
1306
1307         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1308                 e = target;
1309                 rc = 0;
1310         } else {
1311                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1312         }
1313         if ( e ) {
1314 #ifdef LDAP_SLAPI
1315                 if ( op->o_pb != NULL ) {
1316                         init_group_pblock( op, target, e, op_ndn, group_at );
1317
1318                         rc = call_group_preop_plugins( op );
1319                         if ( rc == LDAP_SUCCESS ) {
1320                                 goto done;
1321                         }
1322                 }
1323 #endif /* LDAP_SLAPI */
1324
1325                 a = attr_find( e->e_attrs, group_at );
1326                 if ( a ) {
1327                         /* If the attribute is a subtype of labeledURI, treat this as
1328                          * a dynamic group ala groupOfURLs
1329                          */
1330                         if (is_at_subtype( group_at->ad_type,
1331                                 slap_schema.si_ad_labeledURI->ad_type ) )
1332                         {
1333                                 int i;
1334                                 LDAPURLDesc *ludp;
1335                                 struct berval bv, nbase;
1336                                 Filter *filter;
1337                                 Entry *user;
1338                                 Backend *b2 = op->o_bd;
1339                                 void *o_private = op->o_private;
1340
1341                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1342                                         user = target;
1343                                 } else {
1344                                         /* back-bdb stored lockinfo here, we saved it
1345                                          * above. Clear it out so that a new lock can be used.
1346                                          */
1347                                         op->o_private = NULL;
1348                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1349                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1350                                 }
1351
1352                                 if ( rc == 0 ) {
1353                                         rc = 1;
1354                                         for (i=0; a->a_vals[i].bv_val; i++) {
1355                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1356                                                         LDAP_SUCCESS )
1357                                                 {
1358                                                         continue;
1359                                                 }
1360                                                 nbase.bv_val = NULL;
1361                                                 /* host part must be empty */
1362                                                 /* attrs and extensions parts must be empty */
1363                                                 if (( ludp->lud_host && *ludp->lud_host ) ||
1364                                                         ludp->lud_attrs || ludp->lud_exts )
1365                                                 {
1366                                                         goto loopit;
1367                                                 }
1368                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1369                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1370                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1371                                                 {
1372                                                         goto loopit;
1373                                                 }
1374                                                 switch(ludp->lud_scope) {
1375                                                 case LDAP_SCOPE_BASE:
1376                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1377                                                         break;
1378                                                 case LDAP_SCOPE_ONELEVEL:
1379                                                         dnParent(op_ndn, &bv );
1380                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1381                                                         break;
1382                                                 case LDAP_SCOPE_SUBTREE:
1383                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1384                                                         break;
1385 #ifdef LDAP_SCOPE_SUBORDINATE
1386                                                 case LDAP_SCOPE_SUBORDINATE:
1387                                                         if ( dn_match( &nbase, op_ndn ) &&
1388                                                                 !dnIsSuffix(op_ndn, &nbase ))
1389                                                         {
1390                                                                 goto loopit;
1391                                                         }
1392 #endif
1393                                                 }
1394                                                 filter = str2filter_x( op, ludp->lud_filter );
1395                                                 if ( filter ) {
1396                                                         if ( test_filter( NULL, user, filter ) ==
1397                                                                 LDAP_COMPARE_TRUE )
1398                                                         {
1399                                                                 rc = 0;
1400                                                         }
1401                                                         filter_free_x( op, filter );
1402                                                 }
1403 loopit:
1404                                                 ldap_free_urldesc( ludp );
1405                                                 if ( nbase.bv_val ) {
1406                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1407                                                 }
1408                                                 if ( rc == 0 ) break;
1409                                         }
1410                                         if ( user != target ) {
1411                                                 be_entry_release_r( op, user );
1412                                                 /* restore previous lockinfo, if any */
1413                                                 op->o_private = o_private;
1414                                         }
1415                                 }
1416                                 op->o_bd = b2;
1417                         } else {
1418                                 rc = value_find_ex( group_at,
1419                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1420                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1421                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1422                         }
1423                 } else {
1424                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1425                 }
1426                 if (e != target ) {
1427                         be_entry_release_r( op, e );
1428                 }
1429         } else {
1430                 rc = LDAP_NO_SUCH_OBJECT;
1431         }
1432
1433 #ifdef LDAP_SLAPI
1434         if ( op->o_pb ) call_group_postop_plugins( op );
1435 #endif /* LDAP_SLAPI */
1436
1437         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1438                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len,
1439                         op->o_tmpmemctx);
1440                 g->ga_be = op->o_bd;
1441                 g->ga_oc = group_oc;
1442                 g->ga_at = group_at;
1443                 g->ga_res = rc;
1444                 g->ga_len = gr_ndn->bv_len;
1445                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1446                 g->ga_next = op->o_groups;
1447                 op->o_groups = g;
1448         }
1449 done:
1450         op->o_bd = be;
1451         return rc;
1452 }
1453
1454 #ifdef LDAP_SLAPI
1455 static int backend_compute_output_attr(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e)
1456 {
1457         BerVarray v;
1458         int rc;
1459         BerVarray *vals = (BerVarray *)c->cac_private;
1460         Operation *op = NULL;
1461         int i, j;
1462
1463         slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op );
1464         if ( op == NULL ) {
1465                 return 1;
1466         }
1467
1468         if ( op->o_conn && access_allowed( op,
1469                 e, a->a_desc, NULL, ACL_AUTH,
1470                 &c->cac_acl_state ) == 0 ) {
1471                 return 1;
1472         }
1473
1474         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1475
1476         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1477                 op->o_tmpmemctx );
1478         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1479                 if ( op->o_conn && access_allowed( op,
1480                         e, a->a_desc,
1481                         &a->a_nvals[i],
1482                         ACL_AUTH, &c->cac_acl_state ) == 0 ) {
1483                         continue;
1484                 }
1485                 ber_dupbv_x( &v[j],
1486                         &a->a_nvals[i], op->o_tmpmemctx );
1487                 if (v[j].bv_val ) j++;
1488         }
1489
1490         if (j == 0) {
1491                 op->o_tmpfree( v, op->o_tmpmemctx );
1492                 *vals = NULL;
1493                 rc = 1;
1494         } else {
1495                 v[j].bv_val = NULL;
1496                 v[j].bv_len = 0;
1497                 *vals = v;
1498                 rc = 0;
1499         }
1500
1501         return rc;
1502 }
1503 #endif /* LDAP_SLAPI */
1504
1505 int
1506 backend_attribute(
1507         Operation *op,
1508         Entry   *target,
1509         struct berval   *edn,
1510         AttributeDescription *entry_at,
1511         BerVarray *vals,
1512         slap_access_t access )
1513 {
1514         Entry *e;
1515         Attribute *a;
1516         int i, j, rc = LDAP_SUCCESS;
1517         AccessControlState acl_state = ACL_STATE_INIT;
1518         Backend *be = op->o_bd;
1519
1520         op->o_bd = select_backend( edn, 0, 0 );
1521
1522         if ( target && dn_match( &target->e_nname, edn ) ) {
1523                 e = target;
1524         } else {
1525                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1526         }
1527
1528         if ( e ) {
1529                 a = attr_find( e->e_attrs, entry_at );
1530                 if ( a ) {
1531                         BerVarray v;
1532
1533                         if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1534                                 e, entry_at, NULL, access,
1535                                 &acl_state ) == 0 ) {
1536                                 rc = LDAP_INSUFFICIENT_ACCESS;
1537                                 goto freeit;
1538                         }
1539
1540                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1541
1542                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1543                                 op->o_tmpmemctx );
1544                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1545                                 if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1546                                         e, entry_at,
1547                                         &a->a_nvals[i],
1548                                         access, &acl_state ) == 0 ) {
1549                                         continue;
1550                                 }
1551                                 ber_dupbv_x( &v[j],
1552                                         &a->a_nvals[i], op->o_tmpmemctx );
1553                                 if (v[j].bv_val ) j++;
1554                         }
1555                         if (j == 0) {
1556                                 op->o_tmpfree( v, op->o_tmpmemctx );
1557                                 *vals = NULL;
1558                                 rc = LDAP_INSUFFICIENT_ACCESS;
1559                         } else {
1560                                 v[j].bv_val = NULL;
1561                                 v[j].bv_len = 0;
1562                                 *vals = v;
1563                                 rc = LDAP_SUCCESS;
1564                         }
1565                 }
1566 #ifdef LDAP_SLAPI
1567                 else if ( op->o_pb ) {
1568                         /* try any computed attributes */
1569                         computed_attr_context ctx;
1570                         AttributeName aname;
1571
1572                         slapi_int_pblock_set_operation( op->o_pb, op );
1573
1574                         ctx.cac_pb = op->o_pb;
1575                         ctx.cac_attrs = NULL;
1576                         ctx.cac_userattrs = 0;
1577                         ctx.cac_opattrs = 0;
1578                         ctx.cac_acl_state = acl_state;
1579                         ctx.cac_private = (void *)vals;
1580
1581                         if ( compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr ) == 1)
1582                                 rc = LDAP_INSUFFICIENT_ACCESS;
1583                         else
1584                                 rc = LDAP_SUCCESS;
1585                 }
1586 #endif /* LDAP_SLAPI */
1587 freeit:         if (e != target ) {
1588                         be_entry_release_r( op, e );
1589                 }
1590         }
1591
1592         op->o_bd = be;
1593         return rc;
1594 }
1595
1596 Attribute *backend_operational(
1597         Operation *op,
1598         SlapReply *rs,
1599         int opattrs     )
1600 {
1601         Attribute *a = NULL, **ap = &a;
1602
1603         /*
1604          * If operational attributes (allegedly) are required,
1605          * and the backend supports specific operational attributes,
1606          * add them to the attribute list
1607          */
1608         if ( opattrs || ( op->ors_attrs &&
1609                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1610                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1611                 ap = &(*ap)->a_next;
1612         }
1613
1614         if ( ( opattrs || op->ors_attrs ) && op->o_bd &&
1615                 op->o_bd->be_operational != NULL )
1616         {
1617                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1618         }
1619
1620         return a;
1621 }
1622
1623 #ifdef LDAP_SLAPI
1624 static void init_group_pblock( Operation *op, Entry *target,
1625         Entry *e, struct berval *op_ndn, AttributeDescription *group_at )
1626 {
1627         slapi_int_pblock_set_operation( op->o_pb, op );
1628         slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_ENTRY, (void *)e );
1629         slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val );
1630         slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_ATTRIBUTE, (void *)group_at->ad_cname.bv_val );
1631         slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_TARGET_ENTRY, (void *)target );
1632 }
1633
1634 static int call_group_preop_plugins( Operation *op )
1635 {
1636         int rc;
1637
1638         rc = slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_PRE_GROUP_FN, op->o_pb );
1639         if ( rc < 0 ) {
1640                 if (( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
1641                         (void *)&rc ) != 0 ) || rc == LDAP_SUCCESS )
1642                 {
1643                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1644                 }
1645         } else {
1646                 rc = LDAP_SUCCESS;
1647         }
1648
1649         return rc;
1650 }
1651
1652 static void call_group_postop_plugins( Operation *op )
1653 {
1654         (void) slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_POST_GROUP_FN, op->o_pb );
1655 }
1656 #endif /* LDAP_SLAPI */
1657