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 /*
  60  * This file is automatically generated by configure; it defines
  61  * the BackendInfo binfo[] structure with the configured static
  62  * backend info.  It assumes that every backend of type <name>
  63  * provides an initialization function
  64  *
  65  *      int name_back_initialize( BackendInfo *bi )
  66  *
  67  * that populates the rest of the structure.
  68  */
  69
  70 #include "backend.h"
  71
  72 int                     nBackendInfo = 0;
  73 BackendInfo             *backendInfo = NULL;
  74
  75 int                     nBackendDB = 0;
  76 BackendDB               *backendDB = NULL;
  77
  78 ldap_pvt_thread_pool_t  syncrepl_pool;
  79 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
  80
  81 int backend_init(void)
  82 {
  83         int rc = -1;
  84
  85         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
  86
  87         if((nBackendInfo != 0) || (backendInfo != NULL)) {
  88                 /* already initialized */
  89                 Debug( LDAP_DEBUG_ANY,
  90                         "backend_init: already initialized.\n", 0, 0, 0 );
  91                 return -1;
  92         }
  93
  94         for( ;
  95                 binfo[nBackendInfo].bi_type != NULL;
  96                 nBackendInfo++ )
  97         {
  98                 assert( binfo[nBackendInfo].bi_init );
  99
 100                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 101
 102                 if(rc != 0) {
 103                         Debug( LDAP_DEBUG_ANY,
 104                                 "backend_init: initialized for type \"%s\"\n",
 105                                 binfo[nBackendInfo].bi_type, 0, 0 );
 106                         /* destroy those we've already inited */
 107                         for( nBackendInfo--;
 108                                 nBackendInfo >= 0 ;
 109                                 nBackendInfo-- )
 110                         {
 111                                 if ( binfo[nBackendInfo].bi_destroy ) {
 112                                         binfo[nBackendInfo].bi_destroy(
 113                                                 &binfo[nBackendInfo] );
 114                                 }
 115                         }
 116                         return rc;
 117                 }
 118         }
 119
 120         if ( nBackendInfo > 0) {
 121                 backendInfo = binfo;
 122                 return 0;
 123         }
 124
 125 #ifdef SLAPD_MODULES
 126         return 0;
 127 #else
 128
 129         Debug( LDAP_DEBUG_ANY,
 130                 "backend_init: failed\n",
 131                 0, 0, 0 );
 132
 133         return rc;
 134 #endif /* SLAPD_MODULES */
 135 }
 136
 137 int backend_add(BackendInfo *aBackendInfo)
 138 {
 139         int rc = 0;
 140
 141         if ( aBackendInfo->bi_init == NULL ) {
 142                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 143                         "backend type \"%s\" does not have the (mandatory)init function\n",
 144                         aBackendInfo->bi_type, 0, 0 );
 145                 return -1;
 146         }
 147
 148    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 149                 Debug( LDAP_DEBUG_ANY,
 150                         "backend_add:  initialization for type \"%s\" failed\n",
 151                         aBackendInfo->bi_type, 0, 0 );
 152                 return rc;
 153    }
 154
 155         /* now add the backend type to the Backend Info List */
 156         {
 157                 BackendInfo *newBackendInfo = 0;
 158
 159                 /* if backendInfo == binfo no deallocation of old backendInfo */
 160                 if (backendInfo == binfo) {
 161                         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 162                         AC_MEMCPY(newBackendInfo, backendInfo,
 163                                 sizeof(BackendInfo) * nBackendInfo);
 164                 } else {
 165                         newBackendInfo = ch_realloc(backendInfo,
 166                                 sizeof(BackendInfo) * (nBackendInfo + 1));
 167                 }
 168
 169                 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 170                         sizeof(BackendInfo));
 171                 backendInfo = newBackendInfo;
 172                 nBackendInfo++;
 173                 return 0;
 174         }
 175 }
 176
 177 /* startup a specific backend database */
 178 int backend_startup_one(Backend *be)
 179 {
 180         int rc = 0;
 181
 182         assert(be);
 183
 184         be->be_pending_csn_list = (struct be_pcl *)
 185                 ch_calloc( 1, sizeof( struct be_pcl ));
 186         build_new_dn( &be->be_context_csn, be->be_nsuffix,
 187                 (struct berval *)&slap_ldapsync_cn_bv, NULL );
 188
 189         LDAP_TAILQ_INIT( be->be_pending_csn_list );
 190
 191         Debug( LDAP_DEBUG_TRACE,
 192                 "backend_startup: starting \"%s\"\n",
 193                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 194                 0, 0 );
 195         if ( be->bd_info->bi_db_open ) {
 196                 rc = be->bd_info->bi_db_open( be );
 197                 if ( rc != 0 ) {
 198                         Debug( LDAP_DEBUG_ANY,
 199                                 "backend_startup: bi_db_open failed! (%d)\n",
 200                                 rc, 0, 0 );
 201                 }
 202         }
 203         return rc;
 204 }
 205
 206 int backend_startup(Backend *be)
 207 {
 208         int i;
 209         int rc = 0;
 210
 211         if( ! ( nBackendDB > 0 ) ) {
 212                 /* no databases */
 213                 Debug( LDAP_DEBUG_ANY,
 214                         "backend_startup: %d databases to startup.\n",
 215                         nBackendDB, 0, 0 );
 216                 return 1;
 217         }
 218
 219         if(be != NULL) {
 220                 if ( be->bd_info->bi_open ) {
 221                         rc = be->bd_info->bi_open( be->bd_info );
 222                         if ( rc != 0 ) {
 223                                 Debug( LDAP_DEBUG_ANY,
 224                                         "backend_startup: bi_open failed!\n",
 225                                         0, 0, 0 );
 226
 227                                 return rc;
 228                         }
 229                 }
 230
 231                 return backend_startup_one( be );
 232         }
 233
 234         /* open frontend, if required */
 235         if ( frontendDB->bd_info->bi_db_open ) {
 236                 rc = frontendDB->bd_info->bi_db_open( frontendDB );
 237                 if ( rc != 0 ) {
 238                         Debug( LDAP_DEBUG_ANY,
 239                                 "backend_startup: bi_db_open(frontend) failed! (%d)\n",
 240                                 rc, 0, 0 );
 241                         return rc;
 242                 }
 243         }
 244
 245         /* open each backend type */
 246         for( i = 0; i < nBackendInfo; i++ ) {
 247                 if( backendInfo[i].bi_nDB == 0) {
 248                         /* no database of this type, don't open */
 249                         continue;
 250                 }
 251
 252                 if( backendInfo[i].bi_open ) {
 253                         rc = backendInfo[i].bi_open(
 254                                 &backendInfo[i] );
 255                         if ( rc != 0 ) {
 256                                 Debug( LDAP_DEBUG_ANY,
 257                                         "backend_startup: bi_open %d failed!\n",
 258                                         i, 0, 0 );
 259                                 return rc;
 260                         }
 261                 }
 262         }
 263
 264         ldap_pvt_thread_mutex_init( &slapd_rq.rq_mutex );
 265         LDAP_STAILQ_INIT( &slapd_rq.task_list );
 266         LDAP_STAILQ_INIT( &slapd_rq.run_list );
 267
 268         /* open each backend database */
 269         for( i = 0; i < nBackendDB; i++ ) {
 270                 if ( backendDB[i].be_suffix == NULL ) {
 271                         Debug( LDAP_DEBUG_ANY,
 272                                 "backend_startup: warning, database %d (%s) "
 273                                 "has no suffix\n",
 274                                 i, backendDB[i].bd_info->bi_type, 0 );
 275                 }
 276                 /* append global access controls */
 277                 acl_append( &backendDB[i].be_acl, frontendDB->be_acl );
 278
 279                 rc = backend_startup_one( &backendDB[i] );
 280
 281                 if ( rc ) return rc;
 282
 283
 284                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 285                         syncinfo_t *si;
 286
 287                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 288                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 289                                 Debug( LDAP_DEBUG_ANY,
 290                                         "backend_startup: database(%d) does not support "
 291                                         "operations required for syncrepl", i, 0, 0 );
 292                                 continue;
 293                         }
 294
 295                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 296                                 si->si_be = &backendDB[i];
 297                                 init_syncrepl( si );
 298                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 299                                 ldap_pvt_runqueue_insert( &slapd_rq,
 300                                                 si->si_interval, do_syncrepl, (void *) si );
 301                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 302                         }
 303                 }
 304         }
 305
 306         return rc;
 307 }
 308
 309 int backend_num( Backend *be )
 310 {
 311         int i;
 312
 313         if( be == NULL ) return -1;
 314
 315         for( i = 0; i < nBackendDB; i++ ) {
 316                 if( be == &backendDB[i] ) return i;
 317         }
 318         return -1;
 319 }
 320
 321 int backend_shutdown( Backend *be )
 322 {
 323         int i;
 324         int rc = 0;
 325
 326         if( be != NULL ) {
 327                 /* shutdown a specific backend database */
 328
 329                 if ( be->bd_info->bi_nDB == 0 ) {
 330                         /* no database of this type, we never opened it */
 331                         return 0;
 332                 }
 333
 334                 if ( be->bd_info->bi_db_close ) {
 335                         be->bd_info->bi_db_close( be );
 336                 }
 337
 338                 if( be->bd_info->bi_close ) {
 339                         be->bd_info->bi_close( be->bd_info );
 340                 }
 341
 342                 return 0;
 343         }
 344
 345         /* close each backend database */
 346         for( i = 0; i < nBackendDB; i++ ) {
 347                 if ( backendDB[i].bd_info->bi_db_close ) {
 348                         backendDB[i].bd_info->bi_db_close(
 349                                 &backendDB[i] );
 350                 }
 351
 352                 if(rc != 0) {
 353                         Debug( LDAP_DEBUG_ANY,
 354                                 "backend_close: bi_db_close %s failed!\n",
 355                                 backendDB[i].be_type, 0, 0 );
 356                 }
 357         }
 358
 359         /* close each backend type */
 360         for( i = 0; i < nBackendInfo; i++ ) {
 361                 if( backendInfo[i].bi_nDB == 0 ) {
 362                         /* no database of this type */
 363                         continue;
 364                 }
 365
 366                 if( backendInfo[i].bi_close ) {
 367                         backendInfo[i].bi_close(
 368                                 &backendInfo[i] );
 369                 }
 370         }
 371
 372         /* close frontend, if required */
 373         if ( frontendDB->bd_info->bi_db_close ) {
 374                 rc = frontendDB->bd_info->bi_db_close ( frontendDB );
 375                 if ( rc != 0 ) {
 376                         Debug( LDAP_DEBUG_ANY,
 377                                 "backend_startup: bi_db_close(frontend) failed! (%d)\n",
 378                                 rc, 0, 0 );
 379                 }
 380         }
 381
 382         return 0;
 383 }
 384
 385 int backend_destroy(void)
 386 {
 387         int i;
 388         BackendDB *bd;
 389         syncinfo_t *si_entry;
 390         struct slap_csn_entry *csne;
 391
 392         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 393
 394         /* destroy each backend database */
 395         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 396
 397                 while ( !LDAP_STAILQ_EMPTY( &bd->be_syncinfo )) {
 398                         si_entry = LDAP_STAILQ_FIRST( &bd->be_syncinfo );
 399                         LDAP_STAILQ_REMOVE_HEAD( &bd->be_syncinfo, si_next );
 400                         syncinfo_free( si_entry );
 401                 }
 402
 403                 if ( bd->be_pending_csn_list ) {
 404                         csne = LDAP_TAILQ_FIRST( bd->be_pending_csn_list );
 405                         while ( csne ) {
 406                                 struct slap_csn_entry *tmp_csne = csne;
 407
 408                                 LDAP_TAILQ_REMOVE( bd->be_pending_csn_list, csne, ce_csn_link );
 409                                 ch_free( csne->ce_csn->bv_val );
 410                                 ch_free( csne->ce_csn );
 411                                 csne = LDAP_TAILQ_NEXT( csne, ce_csn_link );
 412                                 ch_free( tmp_csne );
 413                         }
 414                 }
 415
 416                 if ( bd->bd_info->bi_db_destroy ) {
 417                         bd->bd_info->bi_db_destroy( bd );
 418                 }
 419                 ber_bvarray_free( bd->be_suffix );
 420                 ber_bvarray_free( bd->be_nsuffix );
 421                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 422                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 423                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 424                 if ( bd->be_context_csn.bv_val ) free( bd->be_context_csn.bv_val );
 425                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 426         }
 427         free( backendDB );
 428
 429         /* destroy each backend type */
 430         for( i = 0; i < nBackendInfo; i++ ) {
 431                 if( backendInfo[i].bi_destroy ) {
 432                         backendInfo[i].bi_destroy(
 433                                 &backendInfo[i] );
 434                 }
 435         }
 436
 437 #ifdef SLAPD_MODULES
 438         if (backendInfo != binfo) {
 439            free(backendInfo);
 440         }
 441 #endif /* SLAPD_MODULES */
 442
 443         nBackendInfo = 0;
 444         backendInfo = NULL;
 445
 446         /* destroy frontend database */
 447         bd = frontendDB;
 448         if ( bd ) {
 449                 if ( bd->bd_info->bi_db_destroy ) {
 450                         bd->bd_info->bi_db_destroy( bd );
 451                 }
 452                 ber_bvarray_free( bd->be_suffix );
 453                 ber_bvarray_free( bd->be_nsuffix );
 454                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 455                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 456                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 457                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 458         }
 459
 460         return 0;
 461 }
 462
 463 BackendInfo* backend_info(const char *type)
 464 {
 465         int i;
 466
 467         /* search for the backend type */
 468         for( i = 0; i < nBackendInfo; i++ ) {
 469                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 470                         return &backendInfo[i];
 471                 }
 472         }
 473
 474         return NULL;
 475 }
 476
 477
 478 BackendDB *
 479 backend_db_init(
 480     const char  *type )
 481 {
 482         Backend *be;
 483         BackendInfo *bi = backend_info(type);
 484         int     rc = 0;
 485
 486         if( bi == NULL ) {
 487                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 488                 return NULL;
 489         }
 490
 491         be = backendDB;
 492
 493         backendDB = (BackendDB *) ch_realloc(
 494                         (char *) backendDB,
 495                     (nBackendDB + 1) * sizeof(Backend) );
 496
 497         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 498
 499         /* did realloc move our table? if so, fix up dependent pointers */
 500         if ( be != backendDB ) {
 501                 int i;
 502                 for ( i=0, be=backendDB; i<nbackends; i++, be++ ) {
 503                         be->be_pcl_mutexp = &be->be_pcl_mutex;
 504                 }
 505         }
 506
 507         be = &backends[nbackends++];
 508
 509         be->bd_info = bi;
 510         be->be_def_limit = frontendDB->be_def_limit;
 511         be->be_dfltaccess = frontendDB->be_dfltaccess;
 512
 513         be->be_restrictops = frontendDB->be_restrictops;
 514         be->be_requires = frontendDB->be_requires;
 515         be->be_ssf_set = frontendDB->be_ssf_set;
 516
 517         be->be_context_csn.bv_len = 0;
 518         be->be_context_csn.bv_val = NULL;
 519         be->be_pcl_mutexp = &be->be_pcl_mutex;
 520         ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
 521
 522         LDAP_STAILQ_INIT( &be->be_syncinfo );
 523
 524         /* assign a default depth limit for alias deref */
 525         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 526
 527         if(bi->bi_db_init) {
 528                 rc = bi->bi_db_init( be );
 529         }
 530
 531         if(rc != 0) {
 532                 fprintf( stderr, "database init failed (%s)\n", type );
 533                 nbackends--;
 534                 return NULL;
 535         }
 536
 537         bi->bi_nDB++;
 538         return( be );
 539 }
 540
 541 void
 542 be_db_close( void )
 543 {
 544         int     i;
 545
 546         for ( i = 0; i < nbackends; i++ ) {
 547                 if ( backends[i].bd_info->bi_db_close ) {
 548                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 549                 }
 550         }
 551
 552         if ( frontendDB->bd_info->bi_db_close ) {
 553                 (*frontendDB->bd_info->bi_db_close)( frontendDB );
 554         }
 555 }
 556
 557 Backend *
 558 select_backend(
 559         struct berval * dn,
 560         int manageDSAit,
 561         int noSubs )
 562 {
 563         int     i, j;
 564         ber_len_t len, dnlen = dn->bv_len;
 565         Backend *be = NULL;
 566
 567         for ( i = 0; i < nbackends; i++ ) {
 568                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 569                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 570                 {
 571                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 572                                 && noSubs )
 573                         {
 574                                 continue;
 575                         }
 576
 577                         len = backends[i].be_nsuffix[j].bv_len;
 578
 579                         if ( len > dnlen ) {
 580                                 /* suffix is longer than DN */
 581                                 continue;
 582                         }
 583
 584                         /*
 585                          * input DN is normalized, so the separator check
 586                          * need not look at escaping
 587                          */
 588                         if ( len && len < dnlen &&
 589                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 590                         {
 591                                 continue;
 592                         }
 593
 594                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 595                                 &dn->bv_val[dnlen-len] ) == 0 )
 596                         {
 597                                 if( be == NULL ) {
 598                                         be = &backends[i];
 599
 600                                         if( manageDSAit && len == dnlen &&
 601                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 602                                                 continue;
 603                                         }
 604                                 } else {
 605                                         be = &backends[i];
 606                                 }
 607                                 return be;
 608                         }
 609                 }
 610         }
 611
 612         return be;
 613 }
 614
 615 int
 616 be_issuffix(
 617     Backend *be,
 618     struct berval *bvsuffix )
 619 {
 620         int     i;
 621
 622         for ( i = 0;
 623                 be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL;
 624                 i++ )
 625         {
 626                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 627                         return( 1 );
 628                 }
 629         }
 630
 631         return( 0 );
 632 }
 633
 634 int
 635 be_isroot_dn( Backend *be, struct berval *ndn )
 636 {
 637         if ( !ndn->bv_len ) {
 638                 return( 0 );
 639         }
 640
 641         if ( !be->be_rootndn.bv_len ) {
 642                 return( 0 );
 643         }
 644
 645         return dn_match( &be->be_rootndn, ndn );
 646 }
 647
 648 int
 649 be_sync_update( Operation *op )
 650 {
 651         return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) );
 652 }
 653
 654 int
 655 be_slurp_update( Operation *op )
 656 {
 657         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 658                 be_isupdate_dn( op->o_bd, &op->o_ndn ));
 659 }
 660
 661 int
 662 be_shadow_update( Operation *op )
 663 {
 664         return ( SLAP_SHADOW( op->o_bd ) &&
 665                 ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn )));
 666 }
 667
 668 int
 669 be_isupdate_dn( Backend *be, struct berval *ndn )
 670 {
 671         if ( !ndn->bv_len ) return( 0 );
 672
 673         if ( !be->be_update_ndn.bv_len ) return( 0 );
 674
 675         return dn_match( &be->be_update_ndn, ndn );
 676 }
 677
 678 struct berval *
 679 be_root_dn( Backend *be )
 680 {
 681         return &be->be_rootdn;
 682 }
 683
 684 int
 685 be_isroot( Operation *op )
 686 {
 687         return be_isroot_dn( op->o_bd, &op->o_ndn );
 688 }
 689
 690 int
 691 be_isroot_pw( Operation *op )
 692 {
 693         int result;
 694
 695         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 696                 return 0;
 697         }
 698
 699         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 700                 return 0;
 701         }
 702
 703 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 704         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 705 #ifdef SLAPD_SPASSWD
 706         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 707 #endif
 708 #endif
 709
 710         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 711
 712 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 713 #ifdef SLAPD_SPASSWD
 714         lutil_passwd_sasl_conn = NULL;
 715 #endif
 716         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 717 #endif
 718
 719         return result == 0;
 720 }
 721
 722 int
 723 be_entry_release_rw(
 724         Operation *op,
 725         Entry *e,
 726         int rw )
 727 {
 728         if ( op->o_bd->be_release ) {
 729                 /* free and release entry from backend */
 730                 return op->o_bd->be_release( op, e, rw );
 731         } else {
 732                 /* free entry */
 733                 entry_free( e );
 734                 return 0;
 735         }
 736 }
 737
 738 int
 739 backend_unbind( Operation *op, SlapReply *rs )
 740 {
 741         int             i;
 742
 743         for ( i = 0; i < nbackends; i++ ) {
 744 #if defined( LDAP_SLAPI )
 745                 if ( op->o_pb ) {
 746                         int rc;
 747                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 748                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 749                         rc = slapi_int_call_plugins( &backends[i],
 750                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 751                         if ( rc < 0 ) {
 752                                 /*
 753                                  * A preoperation plugin failure will abort the
 754                                  * entire operation.
 755                                  */
 756                                 Debug(LDAP_DEBUG_TRACE,
 757                                         "do_bind: Unbind preoperation plugin failed\n",
 758                                         0, 0, 0);
 759                                 return 0;
 760                         }
 761                 }
 762 #endif /* defined( LDAP_SLAPI ) */
 763
 764                 if ( backends[i].be_unbind ) {
 765                         op->o_bd = &backends[i];
 766                         (*backends[i].be_unbind)( op, rs );
 767                 }
 768
 769 #if defined( LDAP_SLAPI )
 770                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 771                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 772                 {
 773                         Debug(LDAP_DEBUG_TRACE,
 774                                 "do_unbind: Unbind postoperation plugins failed\n",
 775                                 0, 0, 0);
 776                 }
 777 #endif /* defined( LDAP_SLAPI ) */
 778         }
 779
 780         return 0;
 781 }
 782
 783 int
 784 backend_connection_init(
 785         Connection   *conn )
 786 {
 787         int     i;
 788
 789         for ( i = 0; i < nbackends; i++ ) {
 790                 if ( backends[i].be_connection_init ) {
 791                         (*backends[i].be_connection_init)( &backends[i], conn);
 792                 }
 793         }
 794
 795         return 0;
 796 }
 797
 798 int
 799 backend_connection_destroy(
 800         Connection   *conn )
 801 {
 802         int     i;
 803
 804         for ( i = 0; i < nbackends; i++ ) {
 805                 if ( backends[i].be_connection_destroy ) {
 806                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 807                 }
 808         }
 809
 810         return 0;
 811 }
 812
 813 static int
 814 backend_check_controls(
 815         Operation *op,
 816         SlapReply *rs )
 817 {
 818         LDAPControl **ctrls = op->o_ctrls;
 819         rs->sr_err = LDAP_SUCCESS;
 820
 821         if( ctrls ) {
 822                 for( ; *ctrls != NULL ; ctrls++ ) {
 823                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 824                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 825                         {
 826                                 /* FIXME: standards compliance issue
 827                                  *
 828                                  * Per RFC 2251 (and LDAPBIS discussions), if the control
 829                                  * is recognized and appropriate for the operation (which
 830                                  * we've already verified), then the server should make
 831                                  * use of the control when performing the operation
 832                                  * (without regard to criticality).  This code is incorrect
 833                                  * on two counts.
 834                                  * 1) a service error (e.g., unwillingToPerform) should be
 835                                  * returned where a particular backend cannot service the
 836                                  * operation,
 837                                  * 2) this error should be returned irregardless of the
 838                                  * criticality of the control.
 839                                  */
 840                                 rs->sr_text = "control unavailable in context";
 841                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 842                                 break;
 843                         }
 844                 }
 845         }
 846
 847         return rs->sr_err;
 848 }
 849
 850 int
 851 backend_check_restrictions(
 852         Operation *op,
 853         SlapReply *rs,
 854         struct berval *opdata )
 855 {
 856         slap_mask_t restrictops;
 857         slap_mask_t requires;
 858         slap_mask_t opflag;
 859         slap_mask_t exopflag = 0;
 860         slap_ssf_set_t *ssf;
 861         int updateop = 0;
 862         int starttls = 0;
 863         int session = 0;
 864
 865         if( op->o_bd ) {
 866                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 867                         return rs->sr_err;
 868                 }
 869
 870                 restrictops = op->o_bd->be_restrictops;
 871                 requires = op->o_bd->be_requires;
 872                 ssf = &op->o_bd->be_ssf_set;
 873
 874         } else {
 875                 restrictops = frontendDB->be_restrictops;
 876                 requires = frontendDB->be_requires;
 877                 ssf = &frontendDB->be_ssf_set;
 878         }
 879
 880         switch( op->o_tag ) {
 881         case LDAP_REQ_ADD:
 882                 opflag = SLAP_RESTRICT_OP_ADD;
 883                 updateop++;
 884                 break;
 885         case LDAP_REQ_BIND:
 886                 opflag = SLAP_RESTRICT_OP_BIND;
 887                 session++;
 888                 break;
 889         case LDAP_REQ_COMPARE:
 890                 opflag = SLAP_RESTRICT_OP_COMPARE;
 891                 break;
 892         case LDAP_REQ_DELETE:
 893                 updateop++;
 894                 opflag = SLAP_RESTRICT_OP_DELETE;
 895                 break;
 896         case LDAP_REQ_EXTENDED:
 897                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 898
 899                 if( !opdata ) {
 900                         /* treat unspecified as a modify */
 901                         opflag = SLAP_RESTRICT_OP_MODIFY;
 902                         updateop++;
 903                         break;
 904                 }
 905
 906                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 907                         session++;
 908                         starttls++;
 909                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 910                         break;
 911                 }
 912
 913                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 914                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
 915                         break;
 916                 }
 917
 918                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 919                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
 920                         break;
 921                 }
 922
 923                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
 924                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
 925                         updateop++;
 926                         break;
 927                 }
 928
 929                 /* treat everything else as a modify */
 930                 opflag = SLAP_RESTRICT_OP_MODIFY;
 931                 updateop++;
 932                 break;
 933
 934         case LDAP_REQ_MODIFY:
 935                 updateop++;
 936                 opflag = SLAP_RESTRICT_OP_MODIFY;
 937                 break;
 938         case LDAP_REQ_RENAME:
 939                 updateop++;
 940                 opflag = SLAP_RESTRICT_OP_RENAME;
 941                 break;
 942         case LDAP_REQ_SEARCH:
 943                 opflag = SLAP_RESTRICT_OP_SEARCH;
 944                 break;
 945         case LDAP_REQ_UNBIND:
 946                 session++;
 947                 opflag = 0;
 948                 break;
 949         default:
 950                 rs->sr_text = "restrict operations internal error";
 951                 rs->sr_err = LDAP_OTHER;
 952                 return rs->sr_err;
 953         }
 954
 955         if ( !starttls ) {
 956                 /* these checks don't apply to StartTLS */
 957
 958                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 959                 if( op->o_transport_ssf < ssf->sss_transport ) {
 960                         rs->sr_text = op->o_transport_ssf
 961                                 ? "stronger transport confidentiality required"
 962                                 : "transport confidentiality required";
 963                         return rs->sr_err;
 964                 }
 965
 966                 if( op->o_tls_ssf < ssf->sss_tls ) {
 967                         rs->sr_text = op->o_tls_ssf
 968                                 ? "stronger TLS confidentiality required"
 969                                 : "TLS confidentiality required";
 970                         return rs->sr_err;
 971                 }
 972
 973
 974                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 975                         /* simple bind specific check */
 976                         if( op->o_ssf < ssf->sss_simple_bind ) {
 977                                 rs->sr_text = op->o_ssf
 978                                         ? "stronger confidentiality required"
 979                                         : "confidentiality required";
 980                                 return rs->sr_err;
 981                         }
 982                 }
 983
 984                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 985                         /* these checks don't apply to SASL bind */
 986
 987                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 988                                 rs->sr_text = op->o_sasl_ssf
 989                                         ? "stronger SASL confidentiality required"
 990                                         : "SASL confidentiality required";
 991                                 return rs->sr_err;
 992                         }
 993
 994                         if( op->o_ssf < ssf->sss_ssf ) {
 995                                 rs->sr_text = op->o_ssf
 996                                         ? "stronger confidentiality required"
 997                                         : "confidentiality required";
 998                                 return rs->sr_err;
 999                         }
1000                 }
1001
1002                 if( updateop ) {
1003                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1004                                 rs->sr_text = op->o_transport_ssf
1005                                         ? "stronger transport confidentiality required for update"
1006                                         : "transport confidentiality required for update";
1007                                 return rs->sr_err;
1008                         }
1009
1010                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1011                                 rs->sr_text = op->o_tls_ssf
1012                                         ? "stronger TLS confidentiality required for update"
1013                                         : "TLS confidentiality required for update";
1014                                 return rs->sr_err;
1015                         }
1016
1017                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1018                                 rs->sr_text = op->o_sasl_ssf
1019                                         ? "stronger SASL confidentiality required for update"
1020                                         : "SASL confidentiality required for update";
1021                                 return rs->sr_err;
1022                         }
1023
1024                         if( op->o_ssf < ssf->sss_update_ssf ) {
1025                                 rs->sr_text = op->o_ssf
1026                                         ? "stronger confidentiality required for update"
1027                                         : "confidentiality required for update";
1028                                 return rs->sr_err;
1029                         }
1030
1031                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1032                                 op->o_ndn.bv_len == 0 )
1033                         {
1034                                 rs->sr_text = "modifications require authentication";
1035                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1036                                 return rs->sr_err;
1037                         }
1038
1039 #ifdef SLAP_X_LISTENER_MOD
1040                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1041                                 /* no "w" mode means readonly */
1042                                 rs->sr_text = "modifications not allowed on this listener";
1043                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1044                                 return rs->sr_err;
1045                         }
1046 #endif /* SLAP_X_LISTENER_MOD */
1047                 }
1048         }
1049
1050         if ( !session ) {
1051                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1052
1053                 if( requires & SLAP_REQUIRE_STRONG ) {
1054                         /* should check mechanism */
1055                         if( ( op->o_transport_ssf < ssf->sss_transport
1056                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1057                                 || op->o_dn.bv_len == 0 )
1058                         {
1059                                 rs->sr_text = "strong(er) authentication required";
1060                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1061                                 return rs->sr_err;
1062                         }
1063                 }
1064
1065                 if( requires & SLAP_REQUIRE_SASL ) {
1066                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1067                                 rs->sr_text = "SASL authentication required";
1068                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1069                                 return rs->sr_err;
1070                         }
1071                 }
1072
1073                 if( requires & SLAP_REQUIRE_AUTHC ) {
1074                         if( op->o_dn.bv_len == 0 ) {
1075                                 rs->sr_text = "authentication required";
1076                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1077                                 return rs->sr_err;
1078                         }
1079                 }
1080
1081                 if( requires & SLAP_REQUIRE_BIND ) {
1082                         int version;
1083                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1084                         version = op->o_conn->c_protocol;
1085                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1086
1087                         if( !version ) {
1088                                 /* no bind has occurred */
1089                                 rs->sr_text = "BIND required";
1090                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1091                                 return rs->sr_err;
1092                         }
1093                 }
1094
1095                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1096                         if( op->o_protocol < LDAP_VERSION3 ) {
1097                                 /* no bind has occurred */
1098                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1099                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1100                                 return rs->sr_err;
1101                         }
1102                 }
1103
1104 #ifdef SLAP_X_LISTENER_MOD
1105                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1106                         if ( op->o_conn->c_listener &&
1107                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1108                 {
1109                                 /* no "x" mode means bind required */
1110                                 rs->sr_text = "bind required on this listener";
1111                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1112                                 return rs->sr_err;
1113                         }
1114                 }
1115
1116                 if ( !starttls && !updateop ) {
1117                         if ( op->o_conn->c_listener &&
1118                                 !( op->o_conn->c_listener->sl_perms &
1119                                         ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH )))
1120                         {
1121                                 /* no "r" mode means no read */
1122                                 rs->sr_text = "read not allowed on this listener";
1123                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1124                                 return rs->sr_err;
1125                         }
1126                 }
1127 #endif /* SLAP_X_LISTENER_MOD */
1128
1129         }
1130
1131         if( ( restrictops & opflag )
1132                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1133                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1134                         rs->sr_text = "read operations restricted";
1135                 } else if ( restrictops & exopflag ) {
1136                         rs->sr_text = "extended operation restricted";
1137                 } else {
1138                         rs->sr_text = "operation restricted";
1139                 }
1140                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1141                 return rs->sr_err;
1142         }
1143
1144         rs->sr_err = LDAP_SUCCESS;
1145         return rs->sr_err;
1146 }
1147
1148 int backend_check_referrals( Operation *op, SlapReply *rs )
1149 {
1150         rs->sr_err = LDAP_SUCCESS;
1151
1152         if( op->o_bd->be_chk_referrals ) {
1153                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1154
1155                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1156                         send_ldap_result( op, rs );
1157                 }
1158         }
1159
1160         return rs->sr_err;
1161 }
1162
1163 int
1164 be_entry_get_rw(
1165         Operation *op,
1166         struct berval *ndn,
1167         ObjectClass *oc,
1168         AttributeDescription *at,
1169         int rw,
1170         Entry **e )
1171 {
1172         int rc;
1173
1174         *e = NULL;
1175
1176         if (op->o_bd == NULL) {
1177                 rc = LDAP_NO_SUCH_OBJECT;
1178         } else if ( op->o_bd->be_fetch ) {
1179                 rc = ( op->o_bd->be_fetch )( op, ndn,
1180                         oc, at, rw, e );
1181         } else {
1182                 rc = LDAP_UNWILLING_TO_PERFORM;
1183         }
1184         return rc;
1185 }
1186
1187 int
1188 backend_group(
1189         Operation *op,
1190         Entry   *target,
1191         struct berval *gr_ndn,
1192         struct berval *op_ndn,
1193         ObjectClass *group_oc,
1194         AttributeDescription *group_at )
1195 {
1196         Entry *e;
1197         Attribute *a;
1198         int rc;
1199         GroupAssertion *g;
1200         Backend *be = op->o_bd;
1201
1202         if ( op->o_abandon ) return SLAPD_ABANDON;
1203
1204         op->o_bd = select_backend( gr_ndn, 0, 0 );
1205
1206         for (g = op->o_groups; g; g=g->ga_next) {
1207                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1208                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1209                         continue;
1210                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1211                         break;
1212         }
1213
1214         if (g) {
1215                 rc = g->ga_res;
1216                 goto done;
1217         }
1218
1219         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1220                 e = target;
1221                 rc = 0;
1222         } else {
1223                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1224         }
1225         if ( e ) {
1226 #ifdef LDAP_SLAPI
1227                 if ( op->o_pb != NULL ) {
1228                         init_group_pblock( op, target, e, op_ndn, group_at );
1229
1230                         rc = call_group_preop_plugins( op );
1231                         if ( rc == LDAP_SUCCESS ) {
1232                                 goto done;
1233                         }
1234                 }
1235 #endif /* LDAP_SLAPI */
1236
1237                 a = attr_find( e->e_attrs, group_at );
1238                 if ( a ) {
1239                         /* If the attribute is a subtype of labeledURI, treat this as
1240                          * a dynamic group ala groupOfURLs
1241                          */
1242                         if (is_at_subtype( group_at->ad_type,
1243                                 slap_schema.si_ad_labeledURI->ad_type ) )
1244                         {
1245                                 int i;
1246                                 LDAPURLDesc *ludp;
1247                                 struct berval bv, nbase;
1248                                 Filter *filter;
1249                                 Entry *user;
1250                                 Backend *b2 = op->o_bd;
1251                                 void *o_private = op->o_private;
1252
1253                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1254                                         user = target;
1255                                 } else {
1256                                         /* back-bdb stored lockinfo here, we saved it
1257                                          * above. Clear it out so that a new lock can be used.
1258                                          */
1259                                         op->o_private = NULL;
1260                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1261                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1262                                 }
1263
1264                                 if ( rc == 0 ) {
1265                                         rc = 1;
1266                                         for (i=0; a->a_vals[i].bv_val; i++) {
1267                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1268                                                         LDAP_URL_SUCCESS )
1269                                                 {
1270                                                         continue;
1271                                                 }
1272                                                 nbase.bv_val = NULL;
1273                                                 /* host part must be empty */
1274                                                 /* attrs and extensions parts must be empty */
1275                                                 if (( ludp->lud_host && *ludp->lud_host ) ||
1276                                                         ludp->lud_attrs || ludp->lud_exts )
1277                                                 {
1278                                                         goto loopit;
1279                                                 }
1280                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1281                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1282                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1283                                                 {
1284                                                         goto loopit;
1285                                                 }
1286                                                 switch(ludp->lud_scope) {
1287                                                 case LDAP_SCOPE_BASE:
1288                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1289                                                         break;
1290                                                 case LDAP_SCOPE_ONELEVEL:
1291                                                         dnParent(op_ndn, &bv );
1292                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1293                                                         break;
1294                                                 case LDAP_SCOPE_SUBTREE:
1295                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1296                                                         break;
1297 #ifdef LDAP_SCOPE_SUBORDINATE
1298                                                 case LDAP_SCOPE_SUBORDINATE:
1299                                                         if ( dn_match( &nbase, op_ndn ) ||
1300                                                                 !dnIsSuffix( op_ndn, &nbase ) )
1301                                                         {
1302                                                                 goto loopit;
1303                                                         }
1304 #endif
1305                                                 }
1306                                                 filter = str2filter_x( op, ludp->lud_filter );
1307                                                 if ( filter ) {
1308                                                         if ( test_filter( NULL, user, filter ) ==
1309                                                                 LDAP_COMPARE_TRUE )
1310                                                         {
1311                                                                 rc = 0;
1312                                                         }
1313                                                         filter_free_x( op, filter );
1314                                                 }
1315 loopit:
1316                                                 ldap_free_urldesc( ludp );
1317                                                 if ( nbase.bv_val ) {
1318                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1319                                                 }
1320                                                 if ( rc == 0 ) break;
1321                                         }
1322                                         if ( user != target ) {
1323                                                 be_entry_release_r( op, user );
1324                                                 /* restore previous lockinfo, if any */
1325                                                 op->o_private = o_private;
1326                                         }
1327                                 }
1328                                 op->o_bd = b2;
1329                         } else {
1330                                 rc = value_find_ex( group_at,
1331                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1332                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1333                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1334                         }
1335                 } else {
1336                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1337                 }
1338                 if (e != target ) {
1339                         be_entry_release_r( op, e );
1340                 }
1341         } else {
1342                 rc = LDAP_NO_SUCH_OBJECT;
1343         }
1344
1345 #ifdef LDAP_SLAPI
1346         if ( op->o_pb ) call_group_postop_plugins( op );
1347 #endif /* LDAP_SLAPI */
1348
1349         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1350                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len,
1351                         op->o_tmpmemctx);
1352                 g->ga_be = op->o_bd;
1353                 g->ga_oc = group_oc;
1354                 g->ga_at = group_at;
1355                 g->ga_res = rc;
1356                 g->ga_len = gr_ndn->bv_len;
1357                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1358                 g->ga_next = op->o_groups;
1359                 op->o_groups = g;
1360         }
1361 done:
1362         op->o_bd = be;
1363         return rc;
1364 }
1365
1366 #ifdef LDAP_SLAPI
1367 static int backend_compute_output_attr(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e)
1368 {
1369         BerVarray v;
1370         int rc;
1371         BerVarray *vals = (BerVarray *)c->cac_private;
1372         Operation *op = NULL;
1373         int i, j;
1374
1375         slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op );
1376         if ( op == NULL ) {
1377                 return 1;
1378         }
1379
1380         if ( op->o_conn && access_allowed( op,
1381                 e, a->a_desc, NULL, ACL_AUTH,
1382                 &c->cac_acl_state ) == 0 ) {
1383                 return 1;
1384         }
1385
1386         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1387
1388         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1389                 op->o_tmpmemctx );
1390         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1391                 if ( op->o_conn && access_allowed( op,
1392                         e, a->a_desc,
1393                         &a->a_nvals[i],
1394                         ACL_AUTH, &c->cac_acl_state ) == 0 ) {
1395                         continue;
1396                 }
1397                 ber_dupbv_x( &v[j],
1398                         &a->a_nvals[i], op->o_tmpmemctx );
1399                 if (v[j].bv_val ) j++;
1400         }
1401
1402         if (j == 0) {
1403                 op->o_tmpfree( v, op->o_tmpmemctx );
1404                 *vals = NULL;
1405                 rc = 1;
1406         } else {
1407                 v[j].bv_val = NULL;
1408                 v[j].bv_len = 0;
1409                 *vals = v;
1410                 rc = 0;
1411         }
1412
1413         return rc;
1414 }
1415 #endif /* LDAP_SLAPI */
1416
1417 int
1418 backend_attribute(
1419         Operation *op,
1420         Entry   *target,
1421         struct berval   *edn,
1422         AttributeDescription *entry_at,
1423         BerVarray *vals,
1424         slap_access_t access )
1425 {
1426         Entry *e;
1427         Attribute *a;
1428         int i, j, rc = LDAP_SUCCESS;
1429         AccessControlState acl_state = ACL_STATE_INIT;
1430         Backend *be = op->o_bd;
1431
1432         op->o_bd = select_backend( edn, 0, 0 );
1433
1434         if ( target && dn_match( &target->e_nname, edn ) ) {
1435                 e = target;
1436         } else {
1437                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1438         }
1439
1440         if ( e ) {
1441                 a = attr_find( e->e_attrs, entry_at );
1442                 if ( a ) {
1443                         BerVarray v;
1444
1445                         if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1446                                 e, entry_at, NULL, access,
1447                                 &acl_state ) == 0 ) {
1448                                 rc = LDAP_INSUFFICIENT_ACCESS;
1449                                 goto freeit;
1450                         }
1451
1452                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1453
1454                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1455                                 op->o_tmpmemctx );
1456                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1457                                 if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1458                                         e, entry_at,
1459                                         &a->a_nvals[i],
1460                                         access, &acl_state ) == 0 ) {
1461                                         continue;
1462                                 }
1463                                 ber_dupbv_x( &v[j],
1464                                         &a->a_nvals[i], op->o_tmpmemctx );
1465                                 if (v[j].bv_val ) j++;
1466                         }
1467                         if (j == 0) {
1468                                 op->o_tmpfree( v, op->o_tmpmemctx );
1469                                 *vals = NULL;
1470                                 rc = LDAP_INSUFFICIENT_ACCESS;
1471                         } else {
1472                                 v[j].bv_val = NULL;
1473                                 v[j].bv_len = 0;
1474                                 *vals = v;
1475                                 rc = LDAP_SUCCESS;
1476                         }
1477                 }
1478 #ifdef LDAP_SLAPI
1479                 else if ( op->o_pb ) {
1480                         /* try any computed attributes */
1481                         computed_attr_context ctx;
1482                         AttributeName aname;
1483
1484                         slapi_int_pblock_set_operation( op->o_pb, op );
1485
1486                         ctx.cac_pb = op->o_pb;
1487                         ctx.cac_attrs = NULL;
1488                         ctx.cac_userattrs = 0;
1489                         ctx.cac_opattrs = 0;
1490                         ctx.cac_acl_state = acl_state;
1491                         ctx.cac_private = (void *)vals;
1492
1493                         if ( compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr ) == 1)
1494                                 rc = LDAP_INSUFFICIENT_ACCESS;
1495                         else
1496                                 rc = LDAP_SUCCESS;
1497                 }
1498 #endif /* LDAP_SLAPI */
1499 freeit:         if (e != target ) {
1500                         be_entry_release_r( op, e );
1501                 }
1502         }
1503
1504         op->o_bd = be;
1505         return rc;
1506 }
1507
1508 int backend_operational(
1509         Operation *op,
1510         SlapReply *rs )
1511 {
1512         Attribute       **ap;
1513         int             rc = 0;
1514         BackendDB *be_orig;
1515
1516         for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1517                 /* just count them */ ;
1518
1519         /*
1520          * If operational attributes (allegedly) are required,
1521          * and the backend supports specific operational attributes,
1522          * add them to the attribute list
1523          */
1524         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs &&
1525                 ad_inlist( slap_schema.si_ad_entryDN, op->ors_attrs )))
1526         {
1527                 *ap = slap_operational_entryDN( rs->sr_entry );
1528                 ap = &(*ap)->a_next;
1529         }
1530
1531         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs &&
1532                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )))
1533         {
1534                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1535                 ap = &(*ap)->a_next;
1536         }
1537
1538         /* Let the overlays have a chance at this */
1539         be_orig = op->o_bd;
1540         if ( SLAP_ISOVERLAY( be_orig ))
1541                 op->o_bd = select_backend( be_orig->be_nsuffix, 0, 0 );
1542
1543         if (( SLAP_OPATTRS( rs->sr_attr_flags ) || op->ors_attrs ) &&
1544                 op->o_bd && op->o_bd->be_operational != NULL )
1545         {
1546                 Attribute       *a;
1547
1548                 a = rs->sr_operational_attrs;
1549                 rs->sr_operational_attrs = NULL;
1550                 rc = op->o_bd->be_operational( op, rs );
1551                 *ap = rs->sr_operational_attrs;
1552                 if ( a != NULL ) {
1553                         rs->sr_operational_attrs = a;
1554                 }
1555
1556                 for ( ; *ap; ap = &(*ap)->a_next )
1557                         /* just count them */ ;
1558         }
1559         op->o_bd = be_orig;
1560
1561         return rc;
1562 }
1563
1564 #ifdef LDAP_SLAPI
1565 static void init_group_pblock( Operation *op, Entry *target,
1566         Entry *e, struct berval *op_ndn, AttributeDescription *group_at )
1567 {
1568         slapi_int_pblock_set_operation( op->o_pb, op );
1569
1570         slapi_pblock_set( op->o_pb,
1571                 SLAPI_X_GROUP_ENTRY, (void *)e );
1572         slapi_pblock_set( op->o_pb,
1573                 SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val );
1574         slapi_pblock_set( op->o_pb,
1575                 SLAPI_X_GROUP_ATTRIBUTE, (void *)group_at->ad_cname.bv_val );
1576         slapi_pblock_set( op->o_pb,
1577                 SLAPI_X_GROUP_TARGET_ENTRY, (void *)target );
1578 }
1579
1580 static int call_group_preop_plugins( Operation *op )
1581 {
1582         int rc;
1583
1584         rc = slapi_int_call_plugins( op->o_bd,
1585                 SLAPI_X_PLUGIN_PRE_GROUP_FN, op->o_pb );
1586         if ( rc < 0 ) {
1587                 if (( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
1588                         (void *)&rc ) != 0 ) || rc == LDAP_SUCCESS )
1589                 {
1590                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1591                 }
1592         } else {
1593                 rc = LDAP_SUCCESS;
1594         }
1595
1596         return rc;
1597 }
1598
1599 static void call_group_postop_plugins( Operation *op )
1600 {
1601         (void) slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_POST_GROUP_FN, op->o_pb );
1602 }
1603 #endif /* LDAP_SLAPI */
1604