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