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 1998-2005 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 int                     nBackendInfo = 0;
  60 BackendInfo             *backendInfo = NULL;
  61
  62 int                     nBackendDB = 0;
  63 BackendDB               *backendDB = NULL;
  64
  65 ldap_pvt_thread_pool_t  syncrepl_pool;
  66 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
  67
  68 int backend_init(void)
  69 {
  70         int rc = -1;
  71
  72         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
  73
  74         if((nBackendInfo != 0) || (backendInfo != NULL)) {
  75                 /* already initialized */
  76                 Debug( LDAP_DEBUG_ANY,
  77                         "backend_init: already initialized.\n", 0, 0, 0 );
  78                 return -1;
  79         }
  80
  81         for( ;
  82                 slap_binfo[nBackendInfo].bi_type != NULL;
  83                 nBackendInfo++ )
  84         {
  85                 assert( slap_binfo[nBackendInfo].bi_init );
  86
  87                 rc = slap_binfo[nBackendInfo].bi_init( &slap_binfo[nBackendInfo] );
  88
  89                 if(rc != 0) {
  90                         Debug( LDAP_DEBUG_ANY,
  91                                 "backend_init: initialized for type \"%s\"\n",
  92                                 slap_binfo[nBackendInfo].bi_type, 0, 0 );
  93                         /* destroy those we've already inited */
  94                         for( nBackendInfo--;
  95                                 nBackendInfo >= 0 ;
  96                                 nBackendInfo-- )
  97                         {
  98                                 if ( slap_binfo[nBackendInfo].bi_destroy ) {
  99                                         slap_binfo[nBackendInfo].bi_destroy(
 100                                                 &slap_binfo[nBackendInfo] );
 101                                 }
 102                         }
 103                         return rc;
 104                 }
 105         }
 106
 107         if ( nBackendInfo > 0) {
 108                 backendInfo = slap_binfo;
 109                 return 0;
 110         }
 111
 112 #ifdef SLAPD_MODULES
 113         return 0;
 114 #else
 115
 116         Debug( LDAP_DEBUG_ANY,
 117                 "backend_init: failed\n",
 118                 0, 0, 0 );
 119
 120         return rc;
 121 #endif /* SLAPD_MODULES */
 122 }
 123
 124 int backend_add(BackendInfo *aBackendInfo)
 125 {
 126         int rc = 0;
 127
 128         if ( aBackendInfo->bi_init == NULL ) {
 129                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 130                         "backend type \"%s\" does not have the (mandatory)init function\n",
 131                         aBackendInfo->bi_type, 0, 0 );
 132                 return -1;
 133         }
 134
 135    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 136                 Debug( LDAP_DEBUG_ANY,
 137                         "backend_add:  initialization for type \"%s\" failed\n",
 138                         aBackendInfo->bi_type, 0, 0 );
 139                 return rc;
 140    }
 141
 142         /* now add the backend type to the Backend Info List */
 143         {
 144                 BackendInfo *newBackendInfo = 0;
 145
 146                 /* if backendInfo == slap_binfo no deallocation of old backendInfo */
 147                 if (backendInfo == slap_binfo) {
 148                         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 149                         AC_MEMCPY(newBackendInfo, backendInfo,
 150                                 sizeof(BackendInfo) * nBackendInfo);
 151                 } else {
 152                         newBackendInfo = ch_realloc(backendInfo,
 153                                 sizeof(BackendInfo) * (nBackendInfo + 1));
 154                 }
 155
 156                 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 157                         sizeof(BackendInfo));
 158                 backendInfo = newBackendInfo;
 159                 nBackendInfo++;
 160                 return 0;
 161         }
 162 }
 163
 164 /* startup a specific backend database */
 165 int backend_startup_one(Backend *be)
 166 {
 167         int rc = 0;
 168
 169         assert(be);
 170
 171         be->be_pending_csn_list = (struct be_pcl *)
 172                 ch_calloc( 1, sizeof( struct be_pcl ));
 173
 174         LDAP_TAILQ_INIT( be->be_pending_csn_list );
 175
 176         Debug( LDAP_DEBUG_TRACE,
 177                 "backend_startup: starting \"%s\"\n",
 178                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 179                 0, 0 );
 180         if ( be->bd_info->bi_db_open ) {
 181                 rc = be->bd_info->bi_db_open( be );
 182                 if ( rc != 0 ) {
 183                         Debug( LDAP_DEBUG_ANY,
 184                                 "backend_startup: bi_db_open failed! (%d)\n",
 185                                 rc, 0, 0 );
 186                 }
 187         }
 188
 189         /* back-relay takes care of itself; so may do other */
 190         if ( be->be_controls == NULL ) {
 191                 BackendInfo     *bi = be->bd_info;
 192
 193                 if ( overlay_is_over( be ) ) {
 194                         bi = ((slap_overinfo *)be->bd_info->bi_private)->oi_orig;
 195                 }
 196
 197                 if ( bi->bi_controls ) {
 198                         be->be_controls = ldap_charray_dup( bi->bi_controls );
 199                 }
 200         }
 201
 202         return rc;
 203 }
 204
 205 int backend_startup(Backend *be)
 206 {
 207         int i;
 208         int rc = 0;
 209
 210         if( ! ( nBackendDB > 0 ) ) {
 211                 /* no databases */
 212                 Debug( LDAP_DEBUG_ANY,
 213                         "backend_startup: %d databases to startup.\n",
 214                         nBackendDB, 0, 0 );
 215                 return 1;
 216         }
 217
 218         if(be != NULL) {
 219                 if ( be->bd_info->bi_open ) {
 220                         rc = be->bd_info->bi_open( be->bd_info );
 221                         if ( rc != 0 ) {
 222                                 Debug( LDAP_DEBUG_ANY,
 223                                         "backend_startup: bi_open failed!\n",
 224                                         0, 0, 0 );
 225
 226                                 return rc;
 227                         }
 228                 }
 229
 230                 return backend_startup_one( be );
 231         }
 232
 233         /* open frontend, if required */
 234         if ( frontendDB->bd_info->bi_db_open ) {
 235                 rc = frontendDB->bd_info->bi_db_open( frontendDB );
 236                 if ( rc != 0 ) {
 237                         Debug( LDAP_DEBUG_ANY,
 238                                 "backend_startup: bi_db_open(frontend) failed! (%d)\n",
 239                                 rc, 0, 0 );
 240                         return rc;
 241                 }
 242         }
 243
 244         /* open each backend type */
 245         for( i = 0; i < nBackendInfo; i++ ) {
 246                 if( backendInfo[i].bi_nDB == 0) {
 247                         /* no database of this type, don't open */
 248                         continue;
 249                 }
 250
 251                 if( backendInfo[i].bi_open ) {
 252                         rc = backendInfo[i].bi_open(
 253                                 &backendInfo[i] );
 254                         if ( rc != 0 ) {
 255                                 Debug( LDAP_DEBUG_ANY,
 256                                         "backend_startup: bi_open %d failed!\n",
 257                                         i, 0, 0 );
 258                                 return rc;
 259                         }
 260                 }
 261         }
 262
 263         ldap_pvt_thread_mutex_init( &slapd_rq.rq_mutex );
 264         LDAP_STAILQ_INIT( &slapd_rq.task_list );
 265         LDAP_STAILQ_INIT( &slapd_rq.run_list );
 266
 267         /* open each backend database */
 268         for( i = 0; i < nBackendDB; i++ ) {
 269                 if ( backendDB[i].be_suffix == NULL ) {
 270                         Debug( LDAP_DEBUG_ANY,
 271                                 "backend_startup: warning, database %d (%s) "
 272                                 "has no suffix\n",
 273                                 i, backendDB[i].bd_info->bi_type, 0 );
 274                 }
 275                 /* append global access controls */
 276                 acl_append( &backendDB[i].be_acl, frontendDB->be_acl );
 277
 278                 rc = backend_startup_one( &backendDB[i] );
 279
 280                 if ( rc ) return rc;
 281
 282
 283                 if ( backendDB[i].be_syncinfo ) {
 284                         syncinfo_t *si;
 285
 286                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 287                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 288                                 Debug( LDAP_DEBUG_ANY,
 289                                         "backend_startup: database(%d) does not support "
 290                                         "operations required for syncrepl", i, 0, 0 );
 291                                 continue;
 292                         }
 293
 294                         {
 295                                 si = backendDB[i].be_syncinfo;
 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         struct slap_csn_entry *csne;
 390
 391         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 392
 393         /* destroy each backend database */
 394         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 395
 396                 if ( bd->be_syncinfo ) {
 397                         syncinfo_free( bd->be_syncinfo );
 398                 }
 399
 400                 if ( bd->be_pending_csn_list ) {
 401                         csne = LDAP_TAILQ_FIRST( bd->be_pending_csn_list );
 402                         while ( csne ) {
 403                                 struct slap_csn_entry *tmp_csne = csne;
 404
 405                                 LDAP_TAILQ_REMOVE( bd->be_pending_csn_list, csne, ce_csn_link );
 406                                 ch_free( csne->ce_csn.bv_val );
 407                                 csne = LDAP_TAILQ_NEXT( csne, ce_csn_link );
 408                                 ch_free( tmp_csne );
 409                         }
 410                 }
 411
 412                 if ( bd->bd_info->bi_db_destroy ) {
 413                         bd->bd_info->bi_db_destroy( bd );
 414                 }
 415                 ber_bvarray_free( bd->be_suffix );
 416                 ber_bvarray_free( bd->be_nsuffix );
 417                 if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
 418                         free( bd->be_rootdn.bv_val );
 419                 }
 420                 if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
 421                         free( bd->be_rootndn.bv_val );
 422                 }
 423                 if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
 424                         free( bd->be_rootpw.bv_val );
 425                 }
 426                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 427                 if ( bd->be_controls ) {
 428                         ldap_charray_free( bd->be_controls );
 429                 }
 430         }
 431         free( backendDB );
 432
 433         /* destroy each backend type */
 434         for( i = 0; i < nBackendInfo; i++ ) {
 435                 if( backendInfo[i].bi_destroy ) {
 436                         backendInfo[i].bi_destroy(
 437                                 &backendInfo[i] );
 438                 }
 439         }
 440
 441 #ifdef SLAPD_MODULES
 442         if (backendInfo != slap_binfo) {
 443            free(backendInfo);
 444         }
 445 #endif /* SLAPD_MODULES */
 446
 447         nBackendInfo = 0;
 448         backendInfo = NULL;
 449
 450         /* destroy frontend database */
 451         bd = frontendDB;
 452         if ( bd ) {
 453                 if ( bd->bd_info->bi_db_destroy ) {
 454                         bd->bd_info->bi_db_destroy( bd );
 455                 }
 456                 ber_bvarray_free( bd->be_suffix );
 457                 ber_bvarray_free( bd->be_nsuffix );
 458                 if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
 459                         free( bd->be_rootdn.bv_val );
 460                 }
 461                 if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
 462                         free( bd->be_rootndn.bv_val );
 463                 }
 464                 if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
 465                         free( bd->be_rootpw.bv_val );
 466                 }
 467                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 468         }
 469
 470         return 0;
 471 }
 472
 473 BackendInfo* backend_info(const char *type)
 474 {
 475         int i;
 476
 477         /* search for the backend type */
 478         for( i = 0; i < nBackendInfo; i++ ) {
 479                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 480                         return &backendInfo[i];
 481                 }
 482         }
 483
 484         return NULL;
 485 }
 486
 487
 488 BackendDB *
 489 backend_db_init(
 490     const char  *type )
 491 {
 492         Backend *be;
 493         BackendInfo *bi = backend_info(type);
 494         int     rc = 0;
 495
 496         if( bi == NULL ) {
 497                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 498                 return NULL;
 499         }
 500
 501         be = backendDB;
 502
 503         backendDB = (BackendDB *) ch_realloc(
 504                         (char *) backendDB,
 505                     (nBackendDB + 1) * sizeof(Backend) );
 506
 507         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 508
 509         /* did realloc move our table? if so, fix up dependent pointers */
 510         if ( be != backendDB ) {
 511                 int i;
 512                 for ( i=0, be=backendDB; i<nbackends; i++, be++ ) {
 513                         be->be_pcl_mutexp = &be->be_pcl_mutex;
 514                 }
 515         }
 516
 517         be = &backends[nbackends++];
 518
 519         be->bd_info = bi;
 520
 521         be->be_def_limit = frontendDB->be_def_limit;
 522         be->be_dfltaccess = frontendDB->be_dfltaccess;
 523
 524         be->be_restrictops = frontendDB->be_restrictops;
 525         be->be_requires = frontendDB->be_requires;
 526         be->be_ssf_set = frontendDB->be_ssf_set;
 527
 528         be->be_pcl_mutexp = &be->be_pcl_mutex;
 529         ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
 530
 531         /* assign a default depth limit for alias deref */
 532         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 533
 534         if(bi->bi_db_init) {
 535                 rc = bi->bi_db_init( be );
 536         }
 537
 538         if(rc != 0) {
 539                 fprintf( stderr, "database init failed (%s)\n", type );
 540                 nbackends--;
 541                 return NULL;
 542         }
 543
 544         bi->bi_nDB++;
 545         return( be );
 546 }
 547
 548 void
 549 be_db_close( void )
 550 {
 551         int     i;
 552
 553         for ( i = 0; i < nbackends; i++ ) {
 554                 if ( backends[i].bd_info->bi_db_close ) {
 555                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 556                 }
 557         }
 558
 559         if ( frontendDB->bd_info->bi_db_close ) {
 560                 (*frontendDB->bd_info->bi_db_close)( frontendDB );
 561         }
 562 }
 563
 564 Backend *
 565 select_backend(
 566         struct berval * dn,
 567         int manageDSAit,
 568         int noSubs )
 569 {
 570         int             i, j;
 571         ber_len_t       len, dnlen = dn->bv_len;
 572         Backend         *be = NULL;
 573
 574         for ( i = 0; i < nbackends; i++ ) {
 575                 if ( backends[i].be_nsuffix == NULL ) {
 576                         continue;
 577                 }
 578
 579                 for ( j = 0; !BER_BVISNULL( &backends[i].be_nsuffix[j] ); j++ )
 580                 {
 581                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 582                                 && noSubs )
 583                         {
 584                                 continue;
 585                         }
 586
 587                         len = backends[i].be_nsuffix[j].bv_len;
 588
 589                         if ( len > dnlen ) {
 590                                 /* suffix is longer than DN */
 591                                 continue;
 592                         }
 593
 594                         /*
 595                          * input DN is normalized, so the separator check
 596                          * need not look at escaping
 597                          */
 598                         if ( len && len < dnlen &&
 599                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 600                         {
 601                                 continue;
 602                         }
 603
 604                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 605                                 &dn->bv_val[dnlen-len] ) == 0 )
 606                         {
 607                                 if( be == NULL ) {
 608                                         be = &backends[i];
 609
 610                                         if( manageDSAit && len == dnlen &&
 611                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 612                                                 continue;
 613                                         }
 614                                 } else {
 615                                         be = &backends[i];
 616                                 }
 617                                 return be;
 618                         }
 619                 }
 620         }
 621
 622         return be;
 623 }
 624
 625 int
 626 be_issuffix(
 627     Backend *be,
 628     struct berval *bvsuffix )
 629 {
 630         int     i;
 631
 632         if ( be->be_nsuffix == NULL ) {
 633                 return 0;
 634         }
 635
 636         for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
 637                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 638                         return 1;
 639                 }
 640         }
 641
 642         return 0;
 643 }
 644
 645 int
 646 be_isroot_dn( Backend *be, struct berval *ndn )
 647 {
 648         if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
 649                 return 0;
 650         }
 651
 652         return dn_match( &be->be_rootndn, ndn );
 653 }
 654
 655 int
 656 be_slurp_update( Operation *op )
 657 {
 658         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 659                 be_isupdate_dn( op->o_bd, &op->o_ndn ) );
 660 }
 661
 662 int
 663 be_shadow_update( Operation *op )
 664 {
 665         return ( SLAP_SYNC_SHADOW( op->o_bd ) ||
 666                 ( SLAP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn ) ) );
 667 }
 668
 669 int
 670 be_isupdate_dn( Backend *be, struct berval *ndn )
 671 {
 672         if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_update_ndn ) ) {
 673                 return 0;
 674         }
 675
 676         return dn_match( &be->be_update_ndn, ndn );
 677 }
 678
 679 struct berval *
 680 be_root_dn( Backend *be )
 681 {
 682         return &be->be_rootdn;
 683 }
 684
 685 int
 686 be_isroot( Operation *op )
 687 {
 688         return be_isroot_dn( op->o_bd, &op->o_ndn );
 689 }
 690
 691 int
 692 be_isroot_pw( Operation *op )
 693 {
 694         int result;
 695
 696         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 697                 return 0;
 698         }
 699
 700         if ( BER_BVISEMPTY( &op->o_bd->be_rootpw ) ) {
 701                 return 0;
 702         }
 703
 704 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 705         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 706 #ifdef SLAPD_SPASSWD
 707         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 708 #endif
 709 #endif
 710
 711         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 712
 713 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 714 #ifdef SLAPD_SPASSWD
 715         lutil_passwd_sasl_conn = NULL;
 716 #endif
 717         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 718 #endif
 719
 720         return result == 0;
 721 }
 722
 723 int
 724 be_entry_release_rw(
 725         Operation *op,
 726         Entry *e,
 727         int rw )
 728 {
 729         if ( op->o_bd->be_release ) {
 730                 /* free and release entry from backend */
 731                 return op->o_bd->be_release( op, e, rw );
 732         } else {
 733                 /* free entry */
 734                 entry_free( e );
 735                 return 0;
 736         }
 737 }
 738
 739 int
 740 backend_unbind( Operation *op, SlapReply *rs )
 741 {
 742         int             i;
 743
 744         for ( i = 0; i < nbackends; i++ ) {
 745 #if defined( LDAP_SLAPI )
 746                 if ( op->o_pb ) {
 747                         int rc;
 748                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 749                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 750                         rc = slapi_int_call_plugins( &backends[i],
 751                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 752                         if ( rc < 0 ) {
 753                                 /*
 754                                  * A preoperation plugin failure will abort the
 755                                  * entire operation.
 756                                  */
 757                                 Debug(LDAP_DEBUG_TRACE,
 758                                         "do_bind: Unbind preoperation plugin failed\n",
 759                                         0, 0, 0);
 760                                 return 0;
 761                         }
 762                 }
 763 #endif /* defined( LDAP_SLAPI ) */
 764
 765                 if ( backends[i].be_unbind ) {
 766                         op->o_bd = &backends[i];
 767                         (*backends[i].be_unbind)( op, rs );
 768                 }
 769
 770 #if defined( LDAP_SLAPI )
 771                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 772                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 773                 {
 774                         Debug(LDAP_DEBUG_TRACE,
 775                                 "do_unbind: Unbind postoperation plugins failed\n",
 776                                 0, 0, 0);
 777                 }
 778 #endif /* defined( LDAP_SLAPI ) */
 779         }
 780
 781         return 0;
 782 }
 783
 784 int
 785 backend_connection_init(
 786         Connection   *conn )
 787 {
 788         int     i;
 789
 790         for ( i = 0; i < nbackends; i++ ) {
 791                 if ( backends[i].be_connection_init ) {
 792                         (*backends[i].be_connection_init)( &backends[i], conn);
 793                 }
 794         }
 795
 796         return 0;
 797 }
 798
 799 int
 800 backend_connection_destroy(
 801         Connection   *conn )
 802 {
 803         int     i;
 804
 805         for ( i = 0; i < nbackends; i++ ) {
 806                 if ( backends[i].be_connection_destroy ) {
 807                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 808                 }
 809         }
 810
 811         return 0;
 812 }
 813
 814 static int
 815 backend_check_controls(
 816         Operation *op,
 817         SlapReply *rs )
 818 {
 819         LDAPControl **ctrls = op->o_ctrls;
 820         rs->sr_err = LDAP_SUCCESS;
 821
 822         if( ctrls ) {
 823                 for( ; *ctrls != NULL ; ctrls++ ) {
 824                         /* KLUDGE: ldctl_iscritical munged by controls.c:get_ctrls()
 825                          * to ensure this check is enabled/disabled appropriately.
 826                          */
 827                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 828                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 829                         {
 830                                 /* Per RFC 2251 (and LDAPBIS discussions), if the control
 831                                  * is recognized and appropriate for the operation (which
 832                                  * we've already verified), then the server should make
 833                                  * use of the control when performing the operation.
 834                                  *
 835                                  * Here we find that operation extended by the control
 836                                  * is not unavailable in a particular context, hence the
 837                                  * return of unwillingToPerform.
 838                                  */
 839                                 rs->sr_text = "control unavailable in context";
 840                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 841                                 break;
 842                         }
 843                 }
 844         }
 845
 846         return rs->sr_err;
 847 }
 848
 849 int
 850 backend_check_restrictions(
 851         Operation *op,
 852         SlapReply *rs,
 853         struct berval *opdata )
 854 {
 855         slap_mask_t restrictops;
 856         slap_mask_t requires;
 857         slap_mask_t opflag;
 858         slap_mask_t exopflag = 0;
 859         slap_ssf_set_t *ssf;
 860         int updateop = 0;
 861         int starttls = 0;
 862         int session = 0;
 863
 864         if( op->o_bd ) {
 865                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 866                         return rs->sr_err;
 867                 }
 868
 869                 restrictops = op->o_bd->be_restrictops;
 870                 requires = op->o_bd->be_requires;
 871                 ssf = &op->o_bd->be_ssf_set;
 872
 873         } else {
 874                 restrictops = frontendDB->be_restrictops;
 875                 requires = frontendDB->be_requires;
 876                 ssf = &frontendDB->be_ssf_set;
 877         }
 878
 879         switch( op->o_tag ) {
 880         case LDAP_REQ_ADD:
 881                 opflag = SLAP_RESTRICT_OP_ADD;
 882                 updateop++;
 883                 break;
 884         case LDAP_REQ_BIND:
 885                 opflag = SLAP_RESTRICT_OP_BIND;
 886                 session++;
 887                 break;
 888         case LDAP_REQ_COMPARE:
 889                 opflag = SLAP_RESTRICT_OP_COMPARE;
 890                 break;
 891         case LDAP_REQ_DELETE:
 892                 updateop++;
 893                 opflag = SLAP_RESTRICT_OP_DELETE;
 894                 break;
 895         case LDAP_REQ_EXTENDED:
 896                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 897
 898                 if( !opdata ) {
 899                         /* treat unspecified as a modify */
 900                         opflag = SLAP_RESTRICT_OP_MODIFY;
 901                         updateop++;
 902                         break;
 903                 }
 904
 905                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 906                         session++;
 907                         starttls++;
 908                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 909                         break;
 910                 }
 911
 912                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 913                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
 914                         break;
 915                 }
 916
 917                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 918                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
 919                         break;
 920                 }
 921
 922                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
 923                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
 924                         updateop++;
 925                         break;
 926                 }
 927
 928                 /* treat everything else as a modify */
 929                 opflag = SLAP_RESTRICT_OP_MODIFY;
 930                 updateop++;
 931                 break;
 932
 933         case LDAP_REQ_MODIFY:
 934                 updateop++;
 935                 opflag = SLAP_RESTRICT_OP_MODIFY;
 936                 break;
 937         case LDAP_REQ_RENAME:
 938                 updateop++;
 939                 opflag = SLAP_RESTRICT_OP_RENAME;
 940                 break;
 941         case LDAP_REQ_SEARCH:
 942                 opflag = SLAP_RESTRICT_OP_SEARCH;
 943                 break;
 944         case LDAP_REQ_UNBIND:
 945                 session++;
 946                 opflag = 0;
 947                 break;
 948         default:
 949                 rs->sr_text = "restrict operations internal error";
 950                 rs->sr_err = LDAP_OTHER;
 951                 return rs->sr_err;
 952         }
 953
 954         if ( !starttls ) {
 955                 /* these checks don't apply to StartTLS */
 956
 957                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 958                 if( op->o_transport_ssf < ssf->sss_transport ) {
 959                         rs->sr_text = op->o_transport_ssf
 960                                 ? "stronger transport confidentiality required"
 961                                 : "transport confidentiality required";
 962                         return rs->sr_err;
 963                 }
 964
 965                 if( op->o_tls_ssf < ssf->sss_tls ) {
 966                         rs->sr_text = op->o_tls_ssf
 967                                 ? "stronger TLS confidentiality required"
 968                                 : "TLS confidentiality required";
 969                         return rs->sr_err;
 970                 }
 971
 972
 973                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 974                         /* simple bind specific check */
 975                         if( op->o_ssf < ssf->sss_simple_bind ) {
 976                                 rs->sr_text = op->o_ssf
 977                                         ? "stronger confidentiality required"
 978                                         : "confidentiality required";
 979                                 return rs->sr_err;
 980                         }
 981                 }
 982
 983                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 984                         /* these checks don't apply to SASL bind */
 985
 986                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 987                                 rs->sr_text = op->o_sasl_ssf
 988                                         ? "stronger SASL confidentiality required"
 989                                         : "SASL confidentiality required";
 990                                 return rs->sr_err;
 991                         }
 992
 993                         if( op->o_ssf < ssf->sss_ssf ) {
 994                                 rs->sr_text = op->o_ssf
 995                                         ? "stronger confidentiality required"
 996                                         : "confidentiality required";
 997                                 return rs->sr_err;
 998                         }
 999                 }
1000
1001                 if( updateop ) {
1002                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1003                                 rs->sr_text = op->o_transport_ssf
1004                                         ? "stronger transport confidentiality required for update"
1005                                         : "transport confidentiality required for update";
1006                                 return rs->sr_err;
1007                         }
1008
1009                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1010                                 rs->sr_text = op->o_tls_ssf
1011                                         ? "stronger TLS confidentiality required for update"
1012                                         : "TLS confidentiality required for update";
1013                                 return rs->sr_err;
1014                         }
1015
1016                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1017                                 rs->sr_text = op->o_sasl_ssf
1018                                         ? "stronger SASL confidentiality required for update"
1019                                         : "SASL confidentiality required for update";
1020                                 return rs->sr_err;
1021                         }
1022
1023                         if( op->o_ssf < ssf->sss_update_ssf ) {
1024                                 rs->sr_text = op->o_ssf
1025                                         ? "stronger confidentiality required for update"
1026                                         : "confidentiality required for update";
1027                                 return rs->sr_err;
1028                         }
1029
1030                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1031                                 BER_BVISEMPTY( &op->o_ndn ) )
1032                         {
1033                                 rs->sr_text = "modifications require authentication";
1034                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1035                                 return rs->sr_err;
1036                         }
1037
1038 #ifdef SLAP_X_LISTENER_MOD
1039                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( !BER_BVISEMPTY( &op->o_ndn ) ? S_IWUSR : S_IWOTH ) ) ) {
1040                                 /* no "w" mode means readonly */
1041                                 rs->sr_text = "modifications not allowed on this listener";
1042                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1043                                 return rs->sr_err;
1044                         }
1045 #endif /* SLAP_X_LISTENER_MOD */
1046                 }
1047         }
1048
1049         if ( !session ) {
1050                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1051
1052                 if( requires & SLAP_REQUIRE_STRONG ) {
1053                         /* should check mechanism */
1054                         if( ( op->o_transport_ssf < ssf->sss_transport
1055                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1056                                 || BER_BVISEMPTY( &op->o_dn ) )
1057                         {
1058                                 rs->sr_text = "strong(er) authentication required";
1059                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1060                                 return rs->sr_err;
1061                         }
1062                 }
1063
1064                 if( requires & SLAP_REQUIRE_SASL ) {
1065                         if( op->o_authtype != LDAP_AUTH_SASL || BER_BVISEMPTY( &op->o_dn ) ) {
1066                                 rs->sr_text = "SASL authentication required";
1067                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1068                                 return rs->sr_err;
1069                         }
1070                 }
1071
1072                 if( requires & SLAP_REQUIRE_AUTHC ) {
1073                         if( BER_BVISEMPTY( &op->o_dn ) ) {
1074                                 rs->sr_text = "authentication required";
1075                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1076                                 return rs->sr_err;
1077                         }
1078                 }
1079
1080                 if( requires & SLAP_REQUIRE_BIND ) {
1081                         int version;
1082                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1083                         version = op->o_conn->c_protocol;
1084                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1085
1086                         if( !version ) {
1087                                 /* no bind has occurred */
1088                                 rs->sr_text = "BIND required";
1089                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1090                                 return rs->sr_err;
1091                         }
1092                 }
1093
1094                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1095                         if( op->o_protocol < LDAP_VERSION3 ) {
1096                                 /* no bind has occurred */
1097                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1098                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1099                                 return rs->sr_err;
1100                         }
1101                 }
1102
1103 #ifdef SLAP_X_LISTENER_MOD
1104                 if ( !starttls && BER_BVISEMPTY( &op->o_dn ) ) {
1105                         if ( op->o_conn->c_listener &&
1106                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1107                 {
1108                                 /* no "x" mode means bind required */
1109                                 rs->sr_text = "bind required on this listener";
1110                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1111                                 return rs->sr_err;
1112                         }
1113                 }
1114
1115                 if ( !starttls && !updateop ) {
1116                         if ( op->o_conn->c_listener &&
1117                                 !( op->o_conn->c_listener->sl_perms &
1118                                         ( !BER_BVISEMPTY( &op->o_dn ) ? S_IRUSR : S_IROTH )))
1119                         {
1120                                 /* no "r" mode means no read */
1121                                 rs->sr_text = "read not allowed on this listener";
1122                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1123                                 return rs->sr_err;
1124                         }
1125                 }
1126 #endif /* SLAP_X_LISTENER_MOD */
1127
1128         }
1129
1130         if( ( restrictops & opflag )
1131                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1132                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1133                         rs->sr_text = "read operations restricted";
1134                 } else if ( restrictops & exopflag ) {
1135                         rs->sr_text = "extended operation restricted";
1136                 } else {
1137                         rs->sr_text = "operation restricted";
1138                 }
1139                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1140                 return rs->sr_err;
1141         }
1142
1143         rs->sr_err = LDAP_SUCCESS;
1144         return rs->sr_err;
1145 }
1146
1147 int backend_check_referrals( Operation *op, SlapReply *rs )
1148 {
1149         rs->sr_err = LDAP_SUCCESS;
1150
1151         if( op->o_bd->be_chk_referrals ) {
1152                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1153
1154                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1155                         send_ldap_result( op, rs );
1156                 }
1157         }
1158
1159         return rs->sr_err;
1160 }
1161
1162 int
1163 be_entry_get_rw(
1164         Operation *op,
1165         struct berval *ndn,
1166         ObjectClass *oc,
1167         AttributeDescription *at,
1168         int rw,
1169         Entry **e )
1170 {
1171         int rc;
1172
1173         *e = NULL;
1174
1175         if (op->o_bd == NULL) {
1176                 rc = LDAP_NO_SUCH_OBJECT;
1177         } else if ( op->o_bd->be_fetch ) {
1178                 rc = ( op->o_bd->be_fetch )( op, ndn,
1179                         oc, at, rw, e );
1180         } else {
1181                 rc = LDAP_UNWILLING_TO_PERFORM;
1182         }
1183         return rc;
1184 }
1185
1186 int
1187 backend_group(
1188         Operation *op,
1189         Entry   *target,
1190         struct berval *gr_ndn,
1191         struct berval *op_ndn,
1192         ObjectClass *group_oc,
1193         AttributeDescription *group_at )
1194 {
1195         Entry *e;
1196         Attribute *a;
1197         int rc;
1198         GroupAssertion *g;
1199         Backend *be = op->o_bd;
1200
1201         if ( op->o_abandon ) return SLAPD_ABANDON;
1202
1203         op->o_bd = select_backend( gr_ndn, 0, 0 );
1204
1205         for ( g = op->o_groups; g; g = g->ga_next ) {
1206                 if ( g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1207                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len )
1208                 {
1209                         continue;
1210                 }
1211                 if ( strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0 ) {
1212                         break;
1213                 }
1214         }
1215
1216         if ( g ) {
1217                 rc = g->ga_res;
1218                 goto done;
1219         }
1220
1221         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1222                 e = target;
1223                 rc = 0;
1224         } else {
1225                 rc = be_entry_get_rw( op, gr_ndn, group_oc, group_at, 0, &e );
1226         }
1227         if ( e ) {
1228 #ifdef LDAP_SLAPI
1229                 if ( op->o_pb != NULL ) {
1230                         init_group_pblock( op, target, e, op_ndn, group_at );
1231
1232                         rc = call_group_preop_plugins( op );
1233                         if ( rc == LDAP_SUCCESS ) {
1234                                 goto done;
1235                         }
1236                 }
1237 #endif /* LDAP_SLAPI */
1238
1239                 a = attr_find( e->e_attrs, group_at );
1240                 if ( a ) {
1241                         /* If the attribute is a subtype of labeledURI, treat this as
1242                          * a dynamic group ala groupOfURLs
1243                          */
1244                         if (is_at_subtype( group_at->ad_type,
1245                                 slap_schema.si_ad_labeledURI->ad_type ) )
1246                         {
1247                                 int i;
1248                                 LDAPURLDesc *ludp;
1249                                 struct berval bv, nbase;
1250                                 Filter *filter;
1251                                 Entry *user;
1252                                 Backend *b2 = op->o_bd;
1253
1254                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1255                                         user = target;
1256                                 } else {
1257                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1258                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1259                                 }
1260
1261                                 if ( rc == 0 ) {
1262                                         rc = 1;
1263                                         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
1264                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1265                                                         LDAP_URL_SUCCESS )
1266                                                 {
1267                                                         continue;
1268                                                 }
1269                                                 BER_BVZERO( &nbase );
1270                                                 /* host part must be empty */
1271                                                 /* attrs and extensions parts must be empty */
1272                                                 if ( ( ludp->lud_host && *ludp->lud_host ) ||
1273                                                         ludp->lud_attrs || ludp->lud_exts )
1274                                                 {
1275                                                         goto loopit;
1276                                                 }
1277                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1278                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1279                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1280                                                 {
1281                                                         goto loopit;
1282                                                 }
1283                                                 switch ( ludp->lud_scope ) {
1284                                                 case LDAP_SCOPE_BASE:
1285                                                         if ( !dn_match( &nbase, op_ndn ) ) {
1286                                                                 goto loopit;
1287                                                         }
1288                                                         break;
1289                                                 case LDAP_SCOPE_ONELEVEL:
1290                                                         dnParent( op_ndn, &bv );
1291                                                         if ( !dn_match( &nbase, &bv ) ) {
1292                                                                 goto loopit;
1293                                                         }
1294                                                         break;
1295                                                 case LDAP_SCOPE_SUBTREE:
1296                                                         if ( !dnIsSuffix( op_ndn, &nbase ) ) {
1297                                                                 goto loopit;
1298                                                         }
1299                                                         break;
1300 #ifdef LDAP_SCOPE_SUBORDINATE
1301                                                 case LDAP_SCOPE_SUBORDINATE:
1302                                                         if ( dn_match( &nbase, op_ndn ) ||
1303                                                                 !dnIsSuffix( op_ndn, &nbase ) )
1304                                                         {
1305                                                                 goto loopit;
1306                                                         }
1307 #endif
1308                                                 }
1309                                                 filter = str2filter_x( op, ludp->lud_filter );
1310                                                 if ( filter ) {
1311                                                         if ( test_filter( NULL, user, filter ) ==
1312                                                                 LDAP_COMPARE_TRUE )
1313                                                         {
1314                                                                 rc = 0;
1315                                                         }
1316                                                         filter_free_x( op, filter );
1317                                                 }
1318 loopit:
1319                                                 ldap_free_urldesc( ludp );
1320                                                 if ( !BER_BVISNULL( &nbase ) ) {
1321                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1322                                                 }
1323                                                 if ( rc == 0 ) break;
1324                                         }
1325                                         if ( user != target ) {
1326                                                 be_entry_release_r( op, user );
1327                                         }
1328                                 }
1329                                 op->o_bd = b2;
1330                         } else {
1331                                 rc = value_find_ex( group_at,
1332                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1333                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1334                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1335                         }
1336                 } else {
1337                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1338                 }
1339                 if (e != target ) {
1340                         be_entry_release_r( op, e );
1341                 }
1342         } else {
1343                 rc = LDAP_NO_SUCH_OBJECT;
1344         }
1345
1346 #ifdef LDAP_SLAPI
1347         if ( op->o_pb ) call_group_postop_plugins( op );
1348 #endif /* LDAP_SLAPI */
1349
1350         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1351                 g = op->o_tmpalloc( sizeof( GroupAssertion ) + gr_ndn->bv_len,
1352                         op->o_tmpmemctx );
1353                 g->ga_be = op->o_bd;
1354                 g->ga_oc = group_oc;
1355                 g->ga_at = group_at;
1356                 g->ga_res = rc;
1357                 g->ga_len = gr_ndn->bv_len;
1358                 strcpy( g->ga_ndn, gr_ndn->bv_val );
1359                 g->ga_next = op->o_groups;
1360                 op->o_groups = g;
1361         }
1362 done:
1363         op->o_bd = be;
1364         return rc;
1365 }
1366
1367 #ifdef LDAP_SLAPI
1368 static int backend_compute_output_attr(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e)
1369 {
1370         BerVarray v;
1371         int rc;
1372         BerVarray *vals = (BerVarray *)c->cac_private;
1373         Operation *op = NULL;
1374         int i, j;
1375
1376         slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op );
1377         if ( op == NULL ) {
1378                 return 1;
1379         }
1380
1381         if ( op->o_conn && access_allowed( op,
1382                 e, a->a_desc, NULL, ACL_AUTH,
1383                 &c->cac_acl_state ) == 0 ) {
1384                 return 1;
1385         }
1386
1387         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) ;
1388
1389         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1390                 op->o_tmpmemctx );
1391         for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
1392                 if ( op->o_conn && access_allowed( op,
1393                         e, a->a_desc,
1394                         &a->a_nvals[i],
1395                         ACL_AUTH, &c->cac_acl_state ) == 0 ) {
1396                         continue;
1397                 }
1398                 ber_dupbv_x( &v[j],
1399                         &a->a_nvals[i], op->o_tmpmemctx );
1400                 if ( !BER_BVISNULL( &v[j] ) ) {
1401                         j++;
1402                 }
1403         }
1404
1405         if ( j == 0 ) {
1406                 op->o_tmpfree( v, op->o_tmpmemctx );
1407                 *vals = NULL;
1408                 rc = 1;
1409         } else {
1410                 BER_BVZERO( &v[j] );
1411                 *vals = v;
1412                 rc = 0;
1413         }
1414
1415         return rc;
1416 }
1417 #endif /* LDAP_SLAPI */
1418
1419 int
1420 backend_attribute(
1421         Operation *op,
1422         Entry   *target,
1423         struct berval   *edn,
1424         AttributeDescription *entry_at,
1425         BerVarray *vals,
1426         slap_access_t access )
1427 {
1428         Entry                   *e = NULL;
1429         Attribute               *a = NULL;
1430         int                     freeattr = 0, i, j, rc = LDAP_SUCCESS;
1431         AccessControlState      acl_state = ACL_STATE_INIT;
1432         Backend                 *be = op->o_bd;
1433
1434         op->o_bd = select_backend( edn, 0, 0 );
1435
1436         if ( target && dn_match( &target->e_nname, edn ) ) {
1437                 e = target;
1438
1439         } else {
1440                 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1441         }
1442
1443         if ( e ) {
1444                 a = attr_find( e->e_attrs, entry_at );
1445                 if ( a == NULL ) {
1446                         SlapReply       rs = { 0 };
1447                         AttributeName   anlist[ 2 ];
1448
1449                         anlist[ 0 ].an_name = entry_at->ad_cname;
1450                         anlist[ 0 ].an_desc = entry_at;
1451                         BER_BVZERO( &anlist[ 1 ].an_name );
1452                         rs.sr_attrs = anlist;
1453
1454                         rs.sr_attr_flags = slap_attr_flags( rs.sr_attrs );
1455
1456                         rc = backend_operational( op, &rs );
1457
1458                         if ( rc == LDAP_SUCCESS && rs.sr_operational_attrs ) {
1459                                 freeattr = 1;
1460                                 a = rs.sr_operational_attrs;
1461                         }
1462                 }
1463
1464                 if ( a ) {
1465                         BerVarray v;
1466
1467                         if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1468                                 e, entry_at, NULL, access,
1469                                 &acl_state ) == 0 ) {
1470                                 rc = LDAP_INSUFFICIENT_ACCESS;
1471                                 goto freeit;
1472                         }
1473
1474                         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1475                                 ;
1476
1477                         v = op->o_tmpalloc( sizeof(struct berval) * ( i + 1 ),
1478                                 op->o_tmpmemctx );
1479                         for ( i = 0,j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1480                         {
1481                                 if ( op->o_conn && access > ACL_NONE &&
1482                                                 access_allowed( op, e,
1483                                                         entry_at,
1484                                                         &a->a_nvals[i],
1485                                                         access,
1486                                                         &acl_state ) == 0 )
1487                                 {
1488                                         continue;
1489                                 }
1490                                 ber_dupbv_x( &v[j], &a->a_nvals[i],
1491                                                 op->o_tmpmemctx );
1492                                 if ( !BER_BVISNULL( &v[j] ) ) {
1493                                         j++;
1494                                 }
1495                         }
1496                         if ( j == 0 ) {
1497                                 op->o_tmpfree( v, op->o_tmpmemctx );
1498                                 *vals = NULL;
1499                                 rc = LDAP_INSUFFICIENT_ACCESS;
1500
1501                         } else {
1502                                 BER_BVZERO( &v[j] );
1503                                 *vals = v;
1504                                 rc = LDAP_SUCCESS;
1505                         }
1506                 }
1507 #ifdef LDAP_SLAPI
1508                 else if ( op->o_pb ) {
1509                         /* try any computed attributes */
1510                         computed_attr_context   ctx;
1511
1512                         slapi_int_pblock_set_operation( op->o_pb, op );
1513
1514                         ctx.cac_pb = op->o_pb;
1515                         ctx.cac_attrs = NULL;
1516                         ctx.cac_userattrs = 0;
1517                         ctx.cac_opattrs = 0;
1518                         ctx.cac_acl_state = acl_state;
1519                         ctx.cac_private = (void *)vals;
1520
1521                         rc = compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr );
1522                         if ( rc == 1 ) {
1523                                 rc = LDAP_INSUFFICIENT_ACCESS;
1524
1525                         } else {
1526                                 rc = LDAP_SUCCESS;
1527                         }
1528                 }
1529 #endif /* LDAP_SLAPI */
1530 freeit:         if ( e != target ) {
1531                         be_entry_release_r( op, e );
1532                 }
1533                 if ( freeattr ) {
1534                         attr_free( a );
1535                 }
1536         }
1537
1538         op->o_bd = be;
1539         return rc;
1540 }
1541
1542 int backend_operational(
1543         Operation *op,
1544         SlapReply *rs )
1545 {
1546         Attribute       **ap;
1547         int             rc = 0;
1548         BackendDB       *be_orig;
1549
1550         for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1551                 /* just count them */ ;
1552
1553         /*
1554          * If operational attributes (allegedly) are required,
1555          * and the backend supports specific operational attributes,
1556          * add them to the attribute list
1557          */
1558         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs &&
1559                 ad_inlist( slap_schema.si_ad_entryDN, op->ors_attrs )))
1560         {
1561                 *ap = slap_operational_entryDN( rs->sr_entry );
1562                 ap = &(*ap)->a_next;
1563         }
1564
1565         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs &&
1566                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )))
1567         {
1568                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1569                 ap = &(*ap)->a_next;
1570         }
1571
1572         /* Let the overlays have a chance at this */
1573         be_orig = op->o_bd;
1574         if ( SLAP_ISOVERLAY( be_orig ))
1575                 op->o_bd = select_backend( be_orig->be_nsuffix, 0, 0 );
1576
1577         if (( SLAP_OPATTRS( rs->sr_attr_flags ) || op->ors_attrs ) &&
1578                 op->o_bd && op->o_bd->be_operational != NULL )
1579         {
1580                 Attribute       *a;
1581
1582                 a = rs->sr_operational_attrs;
1583                 rs->sr_operational_attrs = NULL;
1584                 rc = op->o_bd->be_operational( op, rs );
1585                 *ap = rs->sr_operational_attrs;
1586                 if ( a != NULL ) {
1587                         rs->sr_operational_attrs = a;
1588                 }
1589
1590                 for ( ; *ap; ap = &(*ap)->a_next )
1591                         /* just count them */ ;
1592         }
1593         op->o_bd = be_orig;
1594
1595         return rc;
1596 }
1597
1598 #ifdef LDAP_SLAPI
1599 static void init_group_pblock( Operation *op, Entry *target,
1600         Entry *e, struct berval *op_ndn, AttributeDescription *group_at )
1601 {
1602         slapi_int_pblock_set_operation( op->o_pb, op );
1603
1604         slapi_pblock_set( op->o_pb,
1605                 SLAPI_X_GROUP_ENTRY, (void *)e );
1606         slapi_pblock_set( op->o_pb,
1607                 SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val );
1608         slapi_pblock_set( op->o_pb,
1609                 SLAPI_X_GROUP_ATTRIBUTE, (void *)group_at->ad_cname.bv_val );
1610         slapi_pblock_set( op->o_pb,
1611                 SLAPI_X_GROUP_TARGET_ENTRY, (void *)target );
1612 }
1613
1614 static int call_group_preop_plugins( Operation *op )
1615 {
1616         int rc;
1617
1618         rc = slapi_int_call_plugins( op->o_bd,
1619                 SLAPI_X_PLUGIN_PRE_GROUP_FN, op->o_pb );
1620         if ( rc < 0 ) {
1621                 if (( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
1622                         (void *)&rc ) != 0 ) || rc == LDAP_SUCCESS )
1623                 {
1624                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1625                 }
1626         } else {
1627                 rc = LDAP_SUCCESS;
1628         }
1629
1630         return rc;
1631 }
1632
1633 static void call_group_postop_plugins( Operation *op )
1634 {
1635         (void) slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_POST_GROUP_FN, op->o_pb );
1636 }
1637 #endif /* LDAP_SLAPI */
1638