git.sur5r.net Git - openldap/blob - servers/slapd/backend.c

   1 /* backend.c - routines for dealing with back-end databases */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31
  32 #include <ac/string.h>
  33 #include <ac/socket.h>
  34 #include <sys/stat.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38 #include "lber_pvt.h"
  39
  40 #include "ldap_rq.h"
  41
  42 #ifdef LDAP_SLAPI
  43 #include "slapi/slapi.h"
  44
  45 static void init_group_pblock( Operation *op, Entry *target,
  46         Entry *e, struct berval *op_ndn, AttributeDescription *group_at );
  47 static int call_group_preop_plugins( Operation *op );
  48 static void call_group_postop_plugins( Operation *op );
  49 #endif /* LDAP_SLAPI */
  50
  51 /*
  52  * If a module is configured as dynamic, its header should not
  53  * get included into slapd. While this is a general rule and does
  54  * not have much of an effect in UNIX, this rule should be adhered
  55  * to for Windows, where dynamic object code should not be implicitly
  56  * imported into slapd without appropriate __declspec(dllimport) directives.
  57  */
  58
  59 #if SLAPD_BDB == SLAPD_MOD_STATIC
  60 #include "back-bdb/external.h"
  61 #endif
  62 #if SLAPD_DNSSRV == SLAPD_MOD_STATIC
  63 #include "back-dnssrv/external.h"
  64 #endif
  65 #if SLAPD_HDB == SLAPD_MOD_STATIC
  66 #include "back-hdb/external.h"
  67 #endif
  68 #if SLAPD_LDAP == SLAPD_MOD_STATIC
  69 #include "back-ldap/external.h"
  70 #endif
  71 #if SLAPD_LDBM == SLAPD_MOD_STATIC
  72 #include "back-ldbm/external.h"
  73 #endif
  74 #if SLAPD_META == SLAPD_MOD_STATIC
  75 #include "back-meta/external.h"
  76 #endif
  77 #if SLAPD_MONITOR == SLAPD_MOD_STATIC
  78 #include "back-monitor/external.h"
  79 #endif
  80 #if SLAPD_NULL == SLAPD_MOD_STATIC
  81 #include "back-null/external.h"
  82 #endif
  83 #if SLAPD_PASSWD == SLAPD_MOD_STATIC
  84 #include "back-passwd/external.h"
  85 #endif
  86 #if SLAPD_PERL == SLAPD_MOD_STATIC
  87 #include "back-perl/external.h"
  88 #endif
  89 #if SLAPD_RELAY == SLAPD_MOD_STATIC
  90 #include "back-relay/external.h"
  91 #endif
  92 #if SLAPD_SHELL == SLAPD_MOD_STATIC
  93 #include "back-shell/external.h"
  94 #endif
  95 #if SLAPD_TCL == SLAPD_MOD_STATIC
  96 #include "back-tcl/external.h"
  97 #endif
  98 #if SLAPD_SQL == SLAPD_MOD_STATIC
  99 #include "back-sql/external.h"
 100 #endif
 101 #if SLAPD_PRIVATE == SLAPD_MOD_STATIC
 102 #include "private/external.h"
 103 #endif
 104
 105 static BackendInfo binfo[] = {
 106 #if SLAPD_BDB == SLAPD_MOD_STATIC
 107         {"bdb", bdb_initialize},
 108 #endif
 109 #if SLAPD_DNSSRV == SLAPD_MOD_STATIC
 110         {"dnssrv",      dnssrv_back_initialize},
 111 #endif
 112 #if SLAPD_HDB == SLAPD_MOD_STATIC
 113         {"hdb", hdb_initialize},
 114 #endif
 115 #if SLAPD_LDAP == SLAPD_MOD_STATIC
 116         {"ldap",        ldap_back_initialize},
 117 #endif
 118 #if SLAPD_LDBM == SLAPD_MOD_STATIC
 119         {"ldbm",        ldbm_back_initialize},
 120 #endif
 121 #if SLAPD_META == SLAPD_MOD_STATIC
 122         {"meta",        meta_back_initialize},
 123 #endif
 124 #if SLAPD_MONITOR == SLAPD_MOD_STATIC
 125         {"monitor",     monitor_back_initialize},
 126 #endif
 127 #if SLAPD_NULL == SLAPD_MOD_STATIC
 128         {"null",        null_back_initialize},
 129 #endif
 130 #if SLAPD_PASSWD == SLAPD_MOD_STATIC
 131         {"passwd",      passwd_back_initialize},
 132 #endif
 133 #if SLAPD_PERL == SLAPD_MOD_STATIC
 134         {"perl",        perl_back_initialize},
 135 #endif
 136 #if SLAPD_RELAY == SLAPD_MOD_STATIC
 137         {"relay",       relay_back_initialize},
 138 #endif
 139 #if SLAPD_SHELL == SLAPD_MOD_STATIC
 140         {"shell",       shell_back_initialize},
 141 #endif
 142 #if SLAPD_TCL == SLAPD_MOD_STATIC
 143         {"tcl",         tcl_back_initialize},
 144 #endif
 145 #if SLAPD_SQL == SLAPD_MOD_STATIC
 146         {"sql",         backsql_initialize},
 147 #endif
 148         /* for any private backend */
 149 #if SLAPD_PRIVATE == SLAPD_MOD_STATIC
 150         {"private",     private_back_initialize},
 151 #endif
 152         {NULL}
 153 };
 154
 155 int                     nBackendInfo = 0;
 156 BackendInfo     *backendInfo = NULL;
 157
 158 int                     nBackendDB = 0;
 159 BackendDB       *backendDB = NULL;
 160
 161 ldap_pvt_thread_pool_t  syncrepl_pool;
 162 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 163
 164 int backend_init(void)
 165 {
 166         int rc = -1;
 167
 168         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 169
 170         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 171                 /* already initialized */
 172                 Debug( LDAP_DEBUG_ANY,
 173                         "backend_init: already initialized.\n", 0, 0, 0 );
 174                 return -1;
 175         }
 176
 177         for( ;
 178                 binfo[nBackendInfo].bi_type != NULL;
 179                 nBackendInfo++ )
 180         {
 181                 assert( binfo[nBackendInfo].bi_init );
 182
 183                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 184
 185                 if(rc != 0) {
 186                         Debug( LDAP_DEBUG_ANY,
 187                                 "backend_init: initialized for type \"%s\"\n",
 188                                 binfo[nBackendInfo].bi_type, 0, 0 );
 189                         /* destroy those we've already inited */
 190                         for( nBackendInfo--;
 191                                 nBackendInfo >= 0 ;
 192                                 nBackendInfo-- )
 193                         {
 194                                 if ( binfo[nBackendInfo].bi_destroy ) {
 195                                         binfo[nBackendInfo].bi_destroy(
 196                                                 &binfo[nBackendInfo] );
 197                                 }
 198                         }
 199                         return rc;
 200                 }
 201         }
 202
 203         if ( nBackendInfo > 0) {
 204                 backendInfo = binfo;
 205                 return 0;
 206         }
 207
 208 #ifdef SLAPD_MODULES
 209         return 0;
 210 #else
 211
 212         Debug( LDAP_DEBUG_ANY,
 213                 "backend_init: failed\n",
 214                 0, 0, 0 );
 215
 216         return rc;
 217 #endif /* SLAPD_MODULES */
 218 }
 219
 220 int backend_add(BackendInfo *aBackendInfo)
 221 {
 222         int rc = 0;
 223
 224         if ( aBackendInfo->bi_init == NULL ) {
 225                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 226                         "backend type \"%s\" does not have the (mandatory)init function\n",
 227                         aBackendInfo->bi_type, 0, 0 );
 228                 return -1;
 229         }
 230
 231    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 232                 Debug( LDAP_DEBUG_ANY,
 233                         "backend_add:  initialization for type \"%s\" failed\n",
 234                         aBackendInfo->bi_type, 0, 0 );
 235                 return rc;
 236    }
 237
 238         /* now add the backend type to the Backend Info List */
 239         {
 240                 BackendInfo *newBackendInfo = 0;
 241
 242                 /* if backendInfo == binfo no deallocation of old backendInfo */
 243                 if (backendInfo == binfo) {
 244                         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 245                         AC_MEMCPY(newBackendInfo, backendInfo,
 246                                 sizeof(BackendInfo) * nBackendInfo);
 247                 } else {
 248                         newBackendInfo = ch_realloc(backendInfo,
 249                                 sizeof(BackendInfo) * (nBackendInfo + 1));
 250                 }
 251
 252                 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 253                         sizeof(BackendInfo));
 254                 backendInfo = newBackendInfo;
 255                 nBackendInfo++;
 256                 return 0;
 257         }
 258 }
 259
 260 /* startup a specific backend database */
 261 int backend_startup_one(Backend *be)
 262 {
 263         int rc = 0;
 264
 265         assert(be);
 266
 267         be->be_pending_csn_list = (struct be_pcl *)
 268                 ch_calloc( 1, sizeof( struct be_pcl ));
 269         build_new_dn( &be->be_context_csn, be->be_nsuffix,
 270                 (struct berval *)&slap_ldapsync_cn_bv, NULL );
 271
 272         LDAP_TAILQ_INIT( be->be_pending_csn_list );
 273
 274         Debug( LDAP_DEBUG_TRACE,
 275                 "backend_startup: starting \"%s\"\n",
 276                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 277                 0, 0 );
 278         if ( be->bd_info->bi_db_open ) {
 279                 rc = be->bd_info->bi_db_open( be );
 280                 if ( rc != 0 ) {
 281                         Debug( LDAP_DEBUG_ANY,
 282                                 "backend_startup: bi_db_open failed! (%d)\n",
 283                                 rc, 0, 0 );
 284                 }
 285         }
 286         return rc;
 287 }
 288
 289 int backend_startup(Backend *be)
 290 {
 291         int i;
 292         int rc = 0;
 293
 294         if( ! ( nBackendDB > 0 ) ) {
 295                 /* no databases */
 296                 Debug( LDAP_DEBUG_ANY,
 297                         "backend_startup: %d databases to startup.\n",
 298                         nBackendDB, 0, 0 );
 299                 return 1;
 300         }
 301
 302         if(be != NULL) {
 303                 if ( be->bd_info->bi_open ) {
 304                         rc = be->bd_info->bi_open( be->bd_info );
 305                         if ( rc != 0 ) {
 306                                 Debug( LDAP_DEBUG_ANY,
 307                                         "backend_startup: bi_open failed!\n",
 308                                         0, 0, 0 );
 309
 310                                 return rc;
 311                         }
 312                 }
 313
 314                 return backend_startup_one( be );
 315         }
 316
 317         /* open frontend, if required */
 318         if ( frontendDB->bd_info->bi_db_open ) {
 319                 rc = frontendDB->bd_info->bi_db_open( frontendDB );
 320                 if ( rc != 0 ) {
 321                         Debug( LDAP_DEBUG_ANY,
 322                                 "backend_startup: bi_db_open(frontend) failed! (%d)\n",
 323                                 rc, 0, 0 );
 324                         return rc;
 325                 }
 326         }
 327
 328         /* open each backend type */
 329         for( i = 0; i < nBackendInfo; i++ ) {
 330                 if( backendInfo[i].bi_nDB == 0) {
 331                         /* no database of this type, don't open */
 332                         continue;
 333                 }
 334
 335                 if( backendInfo[i].bi_open ) {
 336                         rc = backendInfo[i].bi_open(
 337                                 &backendInfo[i] );
 338                         if ( rc != 0 ) {
 339                                 Debug( LDAP_DEBUG_ANY,
 340                                         "backend_startup: bi_open %d failed!\n",
 341                                         i, 0, 0 );
 342                                 return rc;
 343                         }
 344                 }
 345         }
 346
 347         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 348         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 349         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 350
 351         /* open each backend database */
 352         for( i = 0; i < nBackendDB; i++ ) {
 353                 if ( backendDB[i].be_suffix == NULL ) {
 354                         Debug( LDAP_DEBUG_ANY,
 355                                 "backend_startup: warning, database %d (%s) "
 356                                 "has no suffix\n",
 357                                 i, backendDB[i].bd_info->bi_type, 0 );
 358                 }
 359                 /* append global access controls */
 360                 acl_append( &backendDB[i].be_acl, frontendDB->be_acl );
 361
 362                 rc = backend_startup_one( &backendDB[i] );
 363
 364                 if ( rc ) return rc;
 365
 366
 367                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 368                         syncinfo_t *si;
 369
 370                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 371                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 372                                 Debug( LDAP_DEBUG_ANY,
 373                                         "backend_startup: database(%d) does not support "
 374                                         "operations required for syncrepl", i, 0, 0 );
 375                                 continue;
 376                         }
 377
 378                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 379                                 si->si_be = &backendDB[i];
 380                                 init_syncrepl( si );
 381                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 382                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 383                                                 si->si_interval, do_syncrepl, (void *) si );
 384                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 385                         }
 386                 }
 387         }
 388
 389         return rc;
 390 }
 391
 392 int backend_num( Backend *be )
 393 {
 394         int i;
 395
 396         if( be == NULL ) return -1;
 397
 398         for( i = 0; i < nBackendDB; i++ ) {
 399                 if( be == &backendDB[i] ) return i;
 400         }
 401         return -1;
 402 }
 403
 404 int backend_shutdown( Backend *be )
 405 {
 406         int i;
 407         int rc = 0;
 408
 409         if( be != NULL ) {
 410                 /* shutdown a specific backend database */
 411
 412                 if ( be->bd_info->bi_nDB == 0 ) {
 413                         /* no database of this type, we never opened it */
 414                         return 0;
 415                 }
 416
 417                 if ( be->bd_info->bi_db_close ) {
 418                         be->bd_info->bi_db_close( be );
 419                 }
 420
 421                 if( be->bd_info->bi_close ) {
 422                         be->bd_info->bi_close( be->bd_info );
 423                 }
 424
 425                 return 0;
 426         }
 427
 428         /* close each backend database */
 429         for( i = 0; i < nBackendDB; i++ ) {
 430                 if ( backendDB[i].bd_info->bi_db_close ) {
 431                         backendDB[i].bd_info->bi_db_close(
 432                                 &backendDB[i] );
 433                 }
 434
 435                 if(rc != 0) {
 436                         Debug( LDAP_DEBUG_ANY,
 437                                 "backend_close: bi_db_close %s failed!\n",
 438                                 backendDB[i].be_type, 0, 0 );
 439                 }
 440         }
 441
 442         /* close each backend type */
 443         for( i = 0; i < nBackendInfo; i++ ) {
 444                 if( backendInfo[i].bi_nDB == 0 ) {
 445                         /* no database of this type */
 446                         continue;
 447                 }
 448
 449                 if( backendInfo[i].bi_close ) {
 450                         backendInfo[i].bi_close(
 451                                 &backendInfo[i] );
 452                 }
 453         }
 454
 455         /* close frontend, if required */
 456         if ( frontendDB->bd_info->bi_db_close ) {
 457                 rc = frontendDB->bd_info->bi_db_close ( frontendDB );
 458                 if ( rc != 0 ) {
 459                         Debug( LDAP_DEBUG_ANY,
 460                                 "backend_startup: bi_db_close(frontend) failed! (%d)\n",
 461                                 rc, 0, 0 );
 462                 }
 463         }
 464
 465         return 0;
 466 }
 467
 468 int backend_destroy(void)
 469 {
 470         int i;
 471         BackendDB *bd;
 472
 473         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 474
 475         /* destroy each backend database */
 476         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 477                 if ( bd->bd_info->bi_db_destroy ) {
 478                         bd->bd_info->bi_db_destroy( bd );
 479                 }
 480                 ber_bvarray_free( bd->be_suffix );
 481                 ber_bvarray_free( bd->be_nsuffix );
 482                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 483                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 484                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 485                 if ( bd->be_context_csn.bv_val ) free( bd->be_context_csn.bv_val );
 486                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 487         }
 488         free( backendDB );
 489
 490         /* destroy each backend type */
 491         for( i = 0; i < nBackendInfo; i++ ) {
 492                 if( backendInfo[i].bi_destroy ) {
 493                         backendInfo[i].bi_destroy(
 494                                 &backendInfo[i] );
 495                 }
 496         }
 497
 498 #ifdef SLAPD_MODULES
 499         if (backendInfo != binfo) {
 500            free(backendInfo);
 501         }
 502 #endif /* SLAPD_MODULES */
 503
 504         nBackendInfo = 0;
 505         backendInfo = NULL;
 506
 507         /* destroy frontend database */
 508         bd = frontendDB;
 509         if ( bd->bd_info->bi_db_destroy ) {
 510                 bd->bd_info->bi_db_destroy( bd );
 511         }
 512         ber_bvarray_free( bd->be_suffix );
 513         ber_bvarray_free( bd->be_nsuffix );
 514         if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 515         if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 516         if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 517         acl_destroy( bd->be_acl, frontendDB->be_acl );
 518
 519         return 0;
 520 }
 521
 522 BackendInfo* backend_info(const char *type)
 523 {
 524         int i;
 525
 526         /* search for the backend type */
 527         for( i = 0; i < nBackendInfo; i++ ) {
 528                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 529                         return &backendInfo[i];
 530                 }
 531         }
 532
 533         return NULL;
 534 }
 535
 536
 537 BackendDB *
 538 backend_db_init(
 539     const char  *type )
 540 {
 541         Backend *be;
 542         BackendInfo *bi = backend_info(type);
 543         int     rc = 0;
 544
 545         if( bi == NULL ) {
 546                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 547                 return NULL;
 548         }
 549
 550         be = backendDB;
 551
 552         backendDB = (BackendDB *) ch_realloc(
 553                         (char *) backendDB,
 554                     (nBackendDB + 1) * sizeof(Backend) );
 555
 556         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 557
 558         /* did realloc move our table? if so, fix up dependent pointers */
 559         if ( be != backendDB ) {
 560                 int i;
 561                 for ( i=0, be=backendDB; i<nbackends; i++, be++ ) {
 562                         be->be_pcl_mutexp = &be->be_pcl_mutex;
 563                 }
 564         }
 565
 566         be = &backends[nbackends++];
 567
 568         be->bd_info = bi;
 569         be->be_def_limit = frontendDB->be_def_limit;
 570         be->be_dfltaccess = frontendDB->be_dfltaccess;
 571
 572         be->be_restrictops = frontendDB->be_restrictops;
 573         be->be_requires = frontendDB->be_requires;
 574         be->be_ssf_set = frontendDB->be_ssf_set;
 575
 576         be->be_context_csn.bv_len = 0;
 577         be->be_context_csn.bv_val = NULL;
 578         be->be_pcl_mutexp = &be->be_pcl_mutex;
 579         ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
 580
 581         LDAP_STAILQ_INIT( &be->be_syncinfo );
 582
 583         /* assign a default depth limit for alias deref */
 584         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 585
 586         if(bi->bi_db_init) {
 587                 rc = bi->bi_db_init( be );
 588         }
 589
 590         if(rc != 0) {
 591                 fprintf( stderr, "database init failed (%s)\n", type );
 592                 nbackends--;
 593                 return NULL;
 594         }
 595
 596         bi->bi_nDB++;
 597         return( be );
 598 }
 599
 600 void
 601 be_db_close( void )
 602 {
 603         int     i;
 604
 605         for ( i = 0; i < nbackends; i++ ) {
 606                 if ( backends[i].bd_info->bi_db_close ) {
 607                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 608                 }
 609         }
 610
 611         if ( frontendDB->bd_info->bi_db_close ) {
 612                 (*frontendDB->bd_info->bi_db_close)( frontendDB );
 613         }
 614 }
 615
 616 Backend *
 617 select_backend(
 618         struct berval * dn,
 619         int manageDSAit,
 620         int noSubs )
 621 {
 622         int     i, j;
 623         ber_len_t len, dnlen = dn->bv_len;
 624         Backend *be = NULL;
 625
 626         for ( i = 0; i < nbackends; i++ ) {
 627                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 628                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 629                 {
 630                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 631                                 && noSubs )
 632                         {
 633                                 continue;
 634                         }
 635
 636                         len = backends[i].be_nsuffix[j].bv_len;
 637
 638                         if ( len > dnlen ) {
 639                                 /* suffix is longer than DN */
 640                                 continue;
 641                         }
 642
 643                         /*
 644                          * input DN is normalized, so the separator check
 645                          * need not look at escaping
 646                          */
 647                         if ( len && len < dnlen &&
 648                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 649                         {
 650                                 continue;
 651                         }
 652
 653                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 654                                 &dn->bv_val[dnlen-len] ) == 0 )
 655                         {
 656                                 if( be == NULL ) {
 657                                         be = &backends[i];
 658
 659                                         if( manageDSAit && len == dnlen &&
 660                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 661                                                 continue;
 662                                         }
 663                                 } else {
 664                                         be = &backends[i];
 665                                 }
 666                                 return be;
 667                         }
 668                 }
 669         }
 670
 671         return be;
 672 }
 673
 674 int
 675 be_issuffix(
 676     Backend *be,
 677     struct berval *bvsuffix )
 678 {
 679         int     i;
 680
 681         for ( i = 0;
 682                 be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL;
 683                 i++ )
 684         {
 685                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 686                         return( 1 );
 687                 }
 688         }
 689
 690         return( 0 );
 691 }
 692
 693 int
 694 be_isroot_dn( Backend *be, struct berval *ndn )
 695 {
 696         if ( !ndn->bv_len ) {
 697                 return( 0 );
 698         }
 699
 700         if ( !be->be_rootndn.bv_len ) {
 701                 return( 0 );
 702         }
 703
 704         return dn_match( &be->be_rootndn, ndn );
 705 }
 706
 707 int
 708 be_sync_update( Operation *op )
 709 {
 710         return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) );
 711 }
 712
 713 int
 714 be_slurp_update( Operation *op )
 715 {
 716         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 717                 be_isupdate_dn( op->o_bd, &op->o_ndn ));
 718 }
 719
 720 int
 721 be_shadow_update( Operation *op )
 722 {
 723         return ( SLAP_SHADOW( op->o_bd ) &&
 724                 ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn )));
 725 }
 726
 727 int
 728 be_isupdate_dn( Backend *be, struct berval *ndn )
 729 {
 730         if ( !ndn->bv_len ) return( 0 );
 731
 732         if ( !be->be_update_ndn.bv_len ) return( 0 );
 733
 734         return dn_match( &be->be_update_ndn, ndn );
 735 }
 736
 737 struct berval *
 738 be_root_dn( Backend *be )
 739 {
 740         return &be->be_rootdn;
 741 }
 742
 743 int
 744 be_isroot( Operation *op )
 745 {
 746         return be_isroot_dn( op->o_bd, &op->o_ndn );
 747 }
 748
 749 int
 750 be_isroot_pw( Operation *op )
 751 {
 752         int result;
 753
 754         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 755                 return 0;
 756         }
 757
 758         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 759                 return 0;
 760         }
 761
 762 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 763         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 764 #ifdef SLAPD_SPASSWD
 765         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 766 #endif
 767 #endif
 768
 769         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 770
 771 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 772 #ifdef SLAPD_SPASSWD
 773         lutil_passwd_sasl_conn = NULL;
 774 #endif
 775         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 776 #endif
 777
 778         return result == 0;
 779 }
 780
 781 int
 782 be_entry_release_rw(
 783         Operation *op,
 784         Entry *e,
 785         int rw )
 786 {
 787         if ( op->o_bd->be_release ) {
 788                 /* free and release entry from backend */
 789                 return op->o_bd->be_release( op, e, rw );
 790         } else {
 791                 /* free entry */
 792                 entry_free( e );
 793                 return 0;
 794         }
 795 }
 796
 797 int
 798 backend_unbind( Operation *op, SlapReply *rs )
 799 {
 800         int             i;
 801
 802         for ( i = 0; i < nbackends; i++ ) {
 803 #if defined( LDAP_SLAPI )
 804                 if ( op->o_pb ) {
 805                         int rc;
 806                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 807                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 808                         rc = slapi_int_call_plugins( &backends[i],
 809                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 810                         if ( rc < 0 ) {
 811                                 /*
 812                                  * A preoperation plugin failure will abort the
 813                                  * entire operation.
 814                                  */
 815                                 Debug(LDAP_DEBUG_TRACE,
 816                                         "do_bind: Unbind preoperation plugin failed\n",
 817                                         0, 0, 0);
 818                                 return 0;
 819                         }
 820                 }
 821 #endif /* defined( LDAP_SLAPI ) */
 822
 823                 if ( backends[i].be_unbind ) {
 824                         op->o_bd = &backends[i];
 825                         (*backends[i].be_unbind)( op, rs );
 826                 }
 827
 828 #if defined( LDAP_SLAPI )
 829                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 830                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 831                 {
 832                         Debug(LDAP_DEBUG_TRACE,
 833                                 "do_unbind: Unbind postoperation plugins failed\n",
 834                                 0, 0, 0);
 835                 }
 836 #endif /* defined( LDAP_SLAPI ) */
 837         }
 838
 839         return 0;
 840 }
 841
 842 int
 843 backend_connection_init(
 844         Connection   *conn )
 845 {
 846         int     i;
 847
 848         for ( i = 0; i < nbackends; i++ ) {
 849                 if ( backends[i].be_connection_init ) {
 850                         (*backends[i].be_connection_init)( &backends[i], conn);
 851                 }
 852         }
 853
 854         return 0;
 855 }
 856
 857 int
 858 backend_connection_destroy(
 859         Connection   *conn )
 860 {
 861         int     i;
 862
 863         for ( i = 0; i < nbackends; i++ ) {
 864                 if ( backends[i].be_connection_destroy ) {
 865                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 866                 }
 867         }
 868
 869         return 0;
 870 }
 871
 872 static int
 873 backend_check_controls(
 874         Operation *op,
 875         SlapReply *rs )
 876 {
 877         LDAPControl **ctrls = op->o_ctrls;
 878         rs->sr_err = LDAP_SUCCESS;
 879
 880         if( ctrls ) {
 881                 for( ; *ctrls != NULL ; ctrls++ ) {
 882                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 883                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 884                         {
 885                                 /* FIXME: standards compliance issue
 886                                  *
 887                                  * Per RFC 2251 (and LDAPBIS discussions), if the control
 888                                  * is recognized and appropriate for the operation (which
 889                                  * we've already verified), then the server should make
 890                                  * use of the control when performing the operation
 891                                  * (without regard to criticality).  This code is incorrect
 892                                  * on two counts.
 893                                  * 1) a service error (e.g., unwillingToPerform) should be
 894                                  * returned where a particular backend cannot service the
 895                                  * operation,
 896                                  * 2) this error should be returned irregardless of the
 897                                  * criticality of the control.
 898                                  */
 899                                 rs->sr_text = "control unavailable in context";
 900                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 901                                 break;
 902                         }
 903                 }
 904         }
 905
 906         return rs->sr_err;
 907 }
 908
 909 int
 910 backend_check_restrictions(
 911         Operation *op,
 912         SlapReply *rs,
 913         struct berval *opdata )
 914 {
 915         slap_mask_t restrictops;
 916         slap_mask_t requires;
 917         slap_mask_t opflag;
 918         slap_mask_t exopflag = 0;
 919         slap_ssf_set_t *ssf;
 920         int updateop = 0;
 921         int starttls = 0;
 922         int session = 0;
 923
 924         if( op->o_bd ) {
 925                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 926                         return rs->sr_err;
 927                 }
 928
 929                 restrictops = op->o_bd->be_restrictops;
 930                 requires = op->o_bd->be_requires;
 931                 ssf = &op->o_bd->be_ssf_set;
 932
 933         } else {
 934                 restrictops = frontendDB->be_restrictops;
 935                 requires = frontendDB->be_requires;
 936                 ssf = &frontendDB->be_ssf_set;
 937         }
 938
 939         switch( op->o_tag ) {
 940         case LDAP_REQ_ADD:
 941                 opflag = SLAP_RESTRICT_OP_ADD;
 942                 updateop++;
 943                 break;
 944         case LDAP_REQ_BIND:
 945                 opflag = SLAP_RESTRICT_OP_BIND;
 946                 session++;
 947                 break;
 948         case LDAP_REQ_COMPARE:
 949                 opflag = SLAP_RESTRICT_OP_COMPARE;
 950                 break;
 951         case LDAP_REQ_DELETE:
 952                 updateop++;
 953                 opflag = SLAP_RESTRICT_OP_DELETE;
 954                 break;
 955         case LDAP_REQ_EXTENDED:
 956                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 957
 958                 if( !opdata ) {
 959                         /* treat unspecified as a modify */
 960                         opflag = SLAP_RESTRICT_OP_MODIFY;
 961                         updateop++;
 962                         break;
 963                 }
 964
 965                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 966                         session++;
 967                         starttls++;
 968                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 969                         break;
 970                 }
 971
 972                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 973                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
 974                         break;
 975                 }
 976
 977                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 978                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
 979                         break;
 980                 }
 981
 982                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
 983                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
 984                         updateop++;
 985                         break;
 986                 }
 987
 988                 /* treat everything else as a modify */
 989                 opflag = SLAP_RESTRICT_OP_MODIFY;
 990                 updateop++;
 991                 break;
 992
 993         case LDAP_REQ_MODIFY:
 994                 updateop++;
 995                 opflag = SLAP_RESTRICT_OP_MODIFY;
 996                 break;
 997         case LDAP_REQ_RENAME:
 998                 updateop++;
 999                 opflag = SLAP_RESTRICT_OP_RENAME;
1000                 break;
1001         case LDAP_REQ_SEARCH:
1002                 opflag = SLAP_RESTRICT_OP_SEARCH;
1003                 break;
1004         case LDAP_REQ_UNBIND:
1005                 session++;
1006                 opflag = 0;
1007                 break;
1008         default:
1009                 rs->sr_text = "restrict operations internal error";
1010                 rs->sr_err = LDAP_OTHER;
1011                 return rs->sr_err;
1012         }
1013
1014         if ( !starttls ) {
1015                 /* these checks don't apply to StartTLS */
1016
1017                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1018                 if( op->o_transport_ssf < ssf->sss_transport ) {
1019                         rs->sr_text = op->o_transport_ssf
1020                                 ? "stronger transport confidentiality required"
1021                                 : "transport confidentiality required";
1022                         return rs->sr_err;
1023                 }
1024
1025                 if( op->o_tls_ssf < ssf->sss_tls ) {
1026                         rs->sr_text = op->o_tls_ssf
1027                                 ? "stronger TLS confidentiality required"
1028                                 : "TLS confidentiality required";
1029                         return rs->sr_err;
1030                 }
1031
1032
1033                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1034                         /* simple bind specific check */
1035                         if( op->o_ssf < ssf->sss_simple_bind ) {
1036                                 rs->sr_text = op->o_ssf
1037                                         ? "stronger confidentiality required"
1038                                         : "confidentiality required";
1039                                 return rs->sr_err;
1040                         }
1041                 }
1042
1043                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1044                         /* these checks don't apply to SASL bind */
1045
1046                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1047                                 rs->sr_text = op->o_sasl_ssf
1048                                         ? "stronger SASL confidentiality required"
1049                                         : "SASL confidentiality required";
1050                                 return rs->sr_err;
1051                         }
1052
1053                         if( op->o_ssf < ssf->sss_ssf ) {
1054                                 rs->sr_text = op->o_ssf
1055                                         ? "stronger confidentiality required"
1056                                         : "confidentiality required";
1057                                 return rs->sr_err;
1058                         }
1059                 }
1060
1061                 if( updateop ) {
1062                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1063                                 rs->sr_text = op->o_transport_ssf
1064                                         ? "stronger transport confidentiality required for update"
1065                                         : "transport confidentiality required for update";
1066                                 return rs->sr_err;
1067                         }
1068
1069                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1070                                 rs->sr_text = op->o_tls_ssf
1071                                         ? "stronger TLS confidentiality required for update"
1072                                         : "TLS confidentiality required for update";
1073                                 return rs->sr_err;
1074                         }
1075
1076                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1077                                 rs->sr_text = op->o_sasl_ssf
1078                                         ? "stronger SASL confidentiality required for update"
1079                                         : "SASL confidentiality required for update";
1080                                 return rs->sr_err;
1081                         }
1082
1083                         if( op->o_ssf < ssf->sss_update_ssf ) {
1084                                 rs->sr_text = op->o_ssf
1085                                         ? "stronger confidentiality required for update"
1086                                         : "confidentiality required for update";
1087                                 return rs->sr_err;
1088                         }
1089
1090                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1091                                 op->o_ndn.bv_len == 0 )
1092                         {
1093                                 rs->sr_text = "modifications require authentication";
1094                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1095                                 return rs->sr_err;
1096                         }
1097
1098 #ifdef SLAP_X_LISTENER_MOD
1099                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1100                                 /* no "w" mode means readonly */
1101                                 rs->sr_text = "modifications not allowed on this listener";
1102                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1103                                 return rs->sr_err;
1104                         }
1105 #endif /* SLAP_X_LISTENER_MOD */
1106                 }
1107         }
1108
1109         if ( !session ) {
1110                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1111
1112                 if( requires & SLAP_REQUIRE_STRONG ) {
1113                         /* should check mechanism */
1114                         if( ( op->o_transport_ssf < ssf->sss_transport
1115                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1116                                 || op->o_dn.bv_len == 0 )
1117                         {
1118                                 rs->sr_text = "strong(er) authentication required";
1119                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1120                                 return rs->sr_err;
1121                         }
1122                 }
1123
1124                 if( requires & SLAP_REQUIRE_SASL ) {
1125                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1126                                 rs->sr_text = "SASL authentication required";
1127                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1128                                 return rs->sr_err;
1129                         }
1130                 }
1131
1132                 if( requires & SLAP_REQUIRE_AUTHC ) {
1133                         if( op->o_dn.bv_len == 0 ) {
1134                                 rs->sr_text = "authentication required";
1135                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1136                                 return rs->sr_err;
1137                         }
1138                 }
1139
1140                 if( requires & SLAP_REQUIRE_BIND ) {
1141                         int version;
1142                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1143                         version = op->o_conn->c_protocol;
1144                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1145
1146                         if( !version ) {
1147                                 /* no bind has occurred */
1148                                 rs->sr_text = "BIND required";
1149                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1150                                 return rs->sr_err;
1151                         }
1152                 }
1153
1154                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1155                         if( op->o_protocol < LDAP_VERSION3 ) {
1156                                 /* no bind has occurred */
1157                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1158                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1159                                 return rs->sr_err;
1160                         }
1161                 }
1162
1163 #ifdef SLAP_X_LISTENER_MOD
1164                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1165                         if ( op->o_conn->c_listener &&
1166                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1167                 {
1168                                 /* no "x" mode means bind required */
1169                                 rs->sr_text = "bind required on this listener";
1170                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1171                                 return rs->sr_err;
1172                         }
1173                 }
1174
1175                 if ( !starttls && !updateop ) {
1176                         if ( op->o_conn->c_listener &&
1177                                 !( op->o_conn->c_listener->sl_perms &
1178                                         ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH )))
1179                         {
1180                                 /* no "r" mode means no read */
1181                                 rs->sr_text = "read not allowed on this listener";
1182                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1183                                 return rs->sr_err;
1184                         }
1185                 }
1186 #endif /* SLAP_X_LISTENER_MOD */
1187
1188         }
1189
1190         if( ( restrictops & opflag )
1191                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1192                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1193                         rs->sr_text = "read operations restricted";
1194                 } else if ( restrictops & exopflag ) {
1195                         rs->sr_text = "extended operation restricted";
1196                 } else {
1197                         rs->sr_text = "operation restricted";
1198                 }
1199                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1200                 return rs->sr_err;
1201         }
1202
1203         rs->sr_err = LDAP_SUCCESS;
1204         return rs->sr_err;
1205 }
1206
1207 int backend_check_referrals( Operation *op, SlapReply *rs )
1208 {
1209         rs->sr_err = LDAP_SUCCESS;
1210
1211         if( op->o_bd->be_chk_referrals ) {
1212                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1213
1214                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1215                         send_ldap_result( op, rs );
1216                 }
1217         }
1218
1219         return rs->sr_err;
1220 }
1221
1222 int
1223 be_entry_get_rw(
1224         Operation *op,
1225         struct berval *ndn,
1226         ObjectClass *oc,
1227         AttributeDescription *at,
1228         int rw,
1229         Entry **e )
1230 {
1231         int rc;
1232
1233         *e = NULL;
1234
1235         if (op->o_bd == NULL) {
1236                 rc = LDAP_NO_SUCH_OBJECT;
1237         } else if ( op->o_bd->be_fetch ) {
1238                 rc = ( op->o_bd->be_fetch )( op, ndn,
1239                         oc, at, rw, e );
1240         } else {
1241                 rc = LDAP_UNWILLING_TO_PERFORM;
1242         }
1243         return rc;
1244 }
1245
1246 int
1247 backend_group(
1248         Operation *op,
1249         Entry   *target,
1250         struct berval *gr_ndn,
1251         struct berval *op_ndn,
1252         ObjectClass *group_oc,
1253         AttributeDescription *group_at )
1254 {
1255         Entry *e;
1256         Attribute *a;
1257         int rc;
1258         GroupAssertion *g;
1259         Backend *be = op->o_bd;
1260
1261         if ( op->o_abandon ) return SLAPD_ABANDON;
1262
1263         op->o_bd = select_backend( gr_ndn, 0, 0 );
1264
1265         for (g = op->o_groups; g; g=g->ga_next) {
1266                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1267                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1268                         continue;
1269                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1270                         break;
1271         }
1272
1273         if (g) {
1274                 rc = g->ga_res;
1275                 goto done;
1276         }
1277
1278         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1279                 e = target;
1280                 rc = 0;
1281         } else {
1282                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1283         }
1284         if ( e ) {
1285 #ifdef LDAP_SLAPI
1286                 if ( op->o_pb != NULL ) {
1287                         init_group_pblock( op, target, e, op_ndn, group_at );
1288
1289                         rc = call_group_preop_plugins( op );
1290                         if ( rc == LDAP_SUCCESS ) {
1291                                 goto done;
1292                         }
1293                 }
1294 #endif /* LDAP_SLAPI */
1295
1296                 a = attr_find( e->e_attrs, group_at );
1297                 if ( a ) {
1298                         /* If the attribute is a subtype of labeledURI, treat this as
1299                          * a dynamic group ala groupOfURLs
1300                          */
1301                         if (is_at_subtype( group_at->ad_type,
1302                                 slap_schema.si_ad_labeledURI->ad_type ) )
1303                         {
1304                                 int i;
1305                                 LDAPURLDesc *ludp;
1306                                 struct berval bv, nbase;
1307                                 Filter *filter;
1308                                 Entry *user;
1309                                 Backend *b2 = op->o_bd;
1310
1311                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1312                                         user = target;
1313                                 } else {
1314                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1315                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1316                                 }
1317
1318                                 if ( rc == 0 ) {
1319                                         rc = 1;
1320                                         for (i=0; a->a_vals[i].bv_val; i++) {
1321                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1322                                                         LDAP_SUCCESS )
1323                                                 {
1324                                                         continue;
1325                                                 }
1326                                                 nbase.bv_val = NULL;
1327                                                 /* host part must be empty */
1328                                                 /* attrs and extensions parts must be empty */
1329                                                 if (( ludp->lud_host && *ludp->lud_host ) ||
1330                                                         ludp->lud_attrs || ludp->lud_exts )
1331                                                 {
1332                                                         goto loopit;
1333                                                 }
1334                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1335                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1336                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1337                                                 {
1338                                                         goto loopit;
1339                                                 }
1340                                                 switch(ludp->lud_scope) {
1341                                                 case LDAP_SCOPE_BASE:
1342                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1343                                                         break;
1344                                                 case LDAP_SCOPE_ONELEVEL:
1345                                                         dnParent(op_ndn, &bv );
1346                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1347                                                         break;
1348                                                 case LDAP_SCOPE_SUBTREE:
1349                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1350                                                         break;
1351 #ifdef LDAP_SCOPE_SUBORDINATE
1352                                                 case LDAP_SCOPE_SUBORDINATE:
1353                                                         if ( dn_match( &nbase, op_ndn ) &&
1354                                                                 !dnIsSuffix(op_ndn, &nbase ))
1355                                                         {
1356                                                                 goto loopit;
1357                                                         }
1358 #endif
1359                                                 }
1360                                                 filter = str2filter_x( op, ludp->lud_filter );
1361                                                 if ( filter ) {
1362                                                         if ( test_filter( NULL, user, filter ) ==
1363                                                                 LDAP_COMPARE_TRUE )
1364                                                         {
1365                                                                 rc = 0;
1366                                                         }
1367                                                         filter_free_x( op, filter );
1368                                                 }
1369 loopit:
1370                                                 ldap_free_urldesc( ludp );
1371                                                 if ( nbase.bv_val ) {
1372                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1373                                                 }
1374                                                 if ( rc == 0 ) break;
1375                                         }
1376                                         if ( user != target ) {
1377                                                 be_entry_release_r( op, user );
1378                                         }
1379                                 }
1380                                 op->o_bd = b2;
1381                         } else {
1382                                 rc = value_find_ex( group_at,
1383                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1384                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1385                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1386                         }
1387                 } else {
1388                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1389                 }
1390                 if (e != target ) {
1391                         be_entry_release_r( op, e );
1392                 }
1393         } else {
1394                 rc = LDAP_NO_SUCH_OBJECT;
1395         }
1396
1397 #ifdef LDAP_SLAPI
1398         if ( op->o_pb ) call_group_postop_plugins( op );
1399 #endif /* LDAP_SLAPI */
1400
1401         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1402                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len,
1403                         op->o_tmpmemctx);
1404                 g->ga_be = op->o_bd;
1405                 g->ga_oc = group_oc;
1406                 g->ga_at = group_at;
1407                 g->ga_res = rc;
1408                 g->ga_len = gr_ndn->bv_len;
1409                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1410                 g->ga_next = op->o_groups;
1411                 op->o_groups = g;
1412         }
1413 done:
1414         op->o_bd = be;
1415         return rc;
1416 }
1417
1418 #ifdef LDAP_SLAPI
1419 static int backend_compute_output_attr(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e)
1420 {
1421         BerVarray v;
1422         int rc;
1423         BerVarray *vals = (BerVarray *)c->cac_private;
1424         Operation *op = NULL;
1425         int i, j;
1426
1427         slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op );
1428         if ( op == NULL ) {
1429                 return 1;
1430         }
1431
1432         if ( op->o_conn && access_allowed( op,
1433                 e, a->a_desc, NULL, ACL_AUTH,
1434                 &c->cac_acl_state ) == 0 ) {
1435                 return 1;
1436         }
1437
1438         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1439
1440         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1441                 op->o_tmpmemctx );
1442         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1443                 if ( op->o_conn && access_allowed( op,
1444                         e, a->a_desc,
1445                         &a->a_nvals[i],
1446                         ACL_AUTH, &c->cac_acl_state ) == 0 ) {
1447                         continue;
1448                 }
1449                 ber_dupbv_x( &v[j],
1450                         &a->a_nvals[i], op->o_tmpmemctx );
1451                 if (v[j].bv_val ) j++;
1452         }
1453
1454         if (j == 0) {
1455                 op->o_tmpfree( v, op->o_tmpmemctx );
1456                 *vals = NULL;
1457                 rc = 1;
1458         } else {
1459                 v[j].bv_val = NULL;
1460                 v[j].bv_len = 0;
1461                 *vals = v;
1462                 rc = 0;
1463         }
1464
1465         return rc;
1466 }
1467 #endif /* LDAP_SLAPI */
1468
1469 int
1470 backend_attribute(
1471         Operation *op,
1472         Entry   *target,
1473         struct berval   *edn,
1474         AttributeDescription *entry_at,
1475         BerVarray *vals,
1476         slap_access_t access )
1477 {
1478         Entry *e;
1479         Attribute *a;
1480         int i, j, rc = LDAP_SUCCESS;
1481         AccessControlState acl_state = ACL_STATE_INIT;
1482         Backend *be = op->o_bd;
1483
1484         op->o_bd = select_backend( edn, 0, 0 );
1485
1486         if ( target && dn_match( &target->e_nname, edn ) ) {
1487                 e = target;
1488         } else {
1489                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1490         }
1491
1492         if ( e ) {
1493                 a = attr_find( e->e_attrs, entry_at );
1494                 if ( a ) {
1495                         BerVarray v;
1496
1497                         if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1498                                 e, entry_at, NULL, access,
1499                                 &acl_state ) == 0 ) {
1500                                 rc = LDAP_INSUFFICIENT_ACCESS;
1501                                 goto freeit;
1502                         }
1503
1504                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1505
1506                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1507                                 op->o_tmpmemctx );
1508                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1509                                 if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1510                                         e, entry_at,
1511                                         &a->a_nvals[i],
1512                                         access, &acl_state ) == 0 ) {
1513                                         continue;
1514                                 }
1515                                 ber_dupbv_x( &v[j],
1516                                         &a->a_nvals[i], op->o_tmpmemctx );
1517                                 if (v[j].bv_val ) j++;
1518                         }
1519                         if (j == 0) {
1520                                 op->o_tmpfree( v, op->o_tmpmemctx );
1521                                 *vals = NULL;
1522                                 rc = LDAP_INSUFFICIENT_ACCESS;
1523                         } else {
1524                                 v[j].bv_val = NULL;
1525                                 v[j].bv_len = 0;
1526                                 *vals = v;
1527                                 rc = LDAP_SUCCESS;
1528                         }
1529                 }
1530 #ifdef LDAP_SLAPI
1531                 else if ( op->o_pb ) {
1532                         /* try any computed attributes */
1533                         computed_attr_context ctx;
1534                         AttributeName aname;
1535
1536                         slapi_int_pblock_set_operation( op->o_pb, op );
1537
1538                         ctx.cac_pb = op->o_pb;
1539                         ctx.cac_attrs = NULL;
1540                         ctx.cac_userattrs = 0;
1541                         ctx.cac_opattrs = 0;
1542                         ctx.cac_acl_state = acl_state;
1543                         ctx.cac_private = (void *)vals;
1544
1545                         if ( compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr ) == 1)
1546                                 rc = LDAP_INSUFFICIENT_ACCESS;
1547                         else
1548                                 rc = LDAP_SUCCESS;
1549                 }
1550 #endif /* LDAP_SLAPI */
1551 freeit:         if (e != target ) {
1552                         be_entry_release_r( op, e );
1553                 }
1554         }
1555
1556         op->o_bd = be;
1557         return rc;
1558 }
1559
1560 int backend_operational(
1561         Operation *op,
1562         SlapReply *rs )
1563 {
1564         Attribute       **ap;
1565         int             rc = 0;
1566
1567         for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1568                 /* just count them */ ;
1569
1570         /*
1571          * If operational attributes (allegedly) are required,
1572          * and the backend supports specific operational attributes,
1573          * add them to the attribute list
1574          */
1575         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs &&
1576                 ad_inlist( slap_schema.si_ad_entryDN, op->ors_attrs )))
1577         {
1578                 *ap = slap_operational_entryDN( rs->sr_entry );
1579                 ap = &(*ap)->a_next;
1580         }
1581
1582         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs &&
1583                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )))
1584         {
1585                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1586                 ap = &(*ap)->a_next;
1587         }
1588
1589         if (( SLAP_OPATTRS( rs->sr_attr_flags ) || op->ors_attrs ) &&
1590                 op->o_bd && op->o_bd->be_operational != NULL )
1591         {
1592                 Attribute       *a;
1593
1594                 a = rs->sr_operational_attrs;
1595                 rs->sr_operational_attrs = NULL;
1596                 rc = op->o_bd->be_operational( op, rs );
1597                 *ap = rs->sr_operational_attrs;
1598                 if ( a != NULL ) {
1599                         rs->sr_operational_attrs = a;
1600                 }
1601
1602                 for ( ; *ap; ap = &(*ap)->a_next )
1603                         /* just count them */ ;
1604         }
1605
1606         return rc;
1607 }
1608
1609 #ifdef LDAP_SLAPI
1610 static void init_group_pblock( Operation *op, Entry *target,
1611         Entry *e, struct berval *op_ndn, AttributeDescription *group_at )
1612 {
1613         slapi_int_pblock_set_operation( op->o_pb, op );
1614
1615         slapi_pblock_set( op->o_pb,
1616                 SLAPI_X_GROUP_ENTRY, (void *)e );
1617         slapi_pblock_set( op->o_pb,
1618                 SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val );
1619         slapi_pblock_set( op->o_pb,
1620                 SLAPI_X_GROUP_ATTRIBUTE, (void *)group_at->ad_cname.bv_val );
1621         slapi_pblock_set( op->o_pb,
1622                 SLAPI_X_GROUP_TARGET_ENTRY, (void *)target );
1623 }
1624
1625 static int call_group_preop_plugins( Operation *op )
1626 {
1627         int rc;
1628
1629         rc = slapi_int_call_plugins( op->o_bd,
1630                 SLAPI_X_PLUGIN_PRE_GROUP_FN, op->o_pb );
1631         if ( rc < 0 ) {
1632                 if (( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
1633                         (void *)&rc ) != 0 ) || rc == LDAP_SUCCESS )
1634                 {
1635                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1636                 }
1637         } else {
1638                 rc = LDAP_SUCCESS;
1639         }
1640
1641         return rc;
1642 }
1643
1644 static void call_group_postop_plugins( Operation *op )
1645 {
1646         (void) slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_POST_GROUP_FN, op->o_pb );
1647 }
1648 #endif /* LDAP_SLAPI */
1649