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