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 #endif
  45
  46 /*
  47  * If a module is configured as dynamic, its header should not
  48  * get included into slapd. While this is a general rule and does
  49  * not have much of an effect in UNIX, this rule should be adhered
  50  * to for Windows, where dynamic object code should not be implicitly
  51  * imported into slapd without appropriate __declspec(dllimport) directives.
  52  */
  53
  54 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  55 #include "back-bdb/external.h"
  56 #endif
  57 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  58 #include "back-dnssrv/external.h"
  59 #endif
  60 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  61 #include "back-hdb/external.h"
  62 #endif
  63 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  64 #include "back-ldap/external.h"
  65 #endif
  66 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  67 #include "back-ldbm/external.h"
  68 #endif
  69 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  70 #include "back-meta/external.h"
  71 #endif
  72 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  73 #include "back-monitor/external.h"
  74 #endif
  75 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
  76 #include "back-null/external.h"
  77 #endif
  78 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  79 #include "back-passwd/external.h"
  80 #endif
  81 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  82 #include "back-perl/external.h"
  83 #endif
  84 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  85 #include "back-shell/external.h"
  86 #endif
  87 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  88 #include "back-tcl/external.h"
  89 #endif
  90 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  91 #include "back-sql/external.h"
  92 #endif
  93 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
  94 #include "private/external.h"
  95 #endif
  96
  97 static BackendInfo binfo[] = {
  98 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  99         {"bdb", bdb_initialize},
 100 #endif
 101 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
 102         {"dnssrv",      dnssrv_back_initialize},
 103 #endif
 104 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
 105         {"hdb", hdb_initialize},
 106 #endif
 107 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
 108         {"ldap",        ldap_back_initialize},
 109 #endif
 110 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
 111         {"ldbm",        ldbm_back_initialize},
 112 #endif
 113 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
 114         {"meta",        meta_back_initialize},
 115 #endif
 116 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
 117         {"monitor",     monitor_back_initialize},
 118 #endif
 119 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
 120         {"null",        null_back_initialize},
 121 #endif
 122 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 123         {"passwd",      passwd_back_initialize},
 124 #endif
 125 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 126         {"perl",        perl_back_initialize},
 127 #endif
 128 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 129         {"shell",       shell_back_initialize},
 130 #endif
 131 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 132         {"tcl",         tcl_back_initialize},
 133 #endif
 134 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
 135         {"sql",         sql_back_initialize},
 136 #endif
 137         /* for any private backend */
 138 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
 139         {"private",     private_back_initialize},
 140 #endif
 141         {NULL}
 142 };
 143
 144 int                     nBackendInfo = 0;
 145 BackendInfo     *backendInfo = NULL;
 146
 147 int                     nBackendDB = 0;
 148 BackendDB       *backendDB = NULL;
 149
 150 ldap_pvt_thread_pool_t  syncrepl_pool;
 151 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 152
 153 int backend_init(void)
 154 {
 155         int rc = -1;
 156
 157         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 158
 159         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 160                 /* already initialized */
 161 #ifdef NEW_LOGGING
 162                 LDAP_LOG( BACKEND, ERR,
 163                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 164 #else
 165                 Debug( LDAP_DEBUG_ANY,
 166                         "backend_init: already initialized.\n", 0, 0, 0 );
 167 #endif
 168                 return -1;
 169         }
 170
 171         for( ;
 172                 binfo[nBackendInfo].bi_type != NULL;
 173                 nBackendInfo++ )
 174         {
 175                 assert( binfo[nBackendInfo].bi_init );
 176
 177                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 178
 179                 if(rc != 0) {
 180 #ifdef NEW_LOGGING
 181                         LDAP_LOG( BACKEND, INFO,
 182                                 "backend_init:  initialized for type \"%s\"\n",
 183                                 binfo[nBackendInfo].bi_type, 0, 0 );
 184 #else
 185                         Debug( LDAP_DEBUG_ANY,
 186                                 "backend_init: initialized for type \"%s\"\n",
 187                                 binfo[nBackendInfo].bi_type, 0, 0 );
 188 #endif
 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 #ifdef NEW_LOGGING
 213         LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
 214 #else
 215         Debug( LDAP_DEBUG_ANY,
 216                 "backend_init: failed\n",
 217                 0, 0, 0 );
 218 #endif
 219
 220         return rc;
 221 #endif /* SLAPD_MODULES */
 222 }
 223
 224 int backend_add(BackendInfo *aBackendInfo)
 225 {
 226    int rc = 0;
 227
 228    if ( aBackendInfo->bi_init == NULL ) {
 229 #ifdef NEW_LOGGING
 230         LDAP_LOG( BACKEND, ERR,
 231                   "backend_add:  backend type \"%s\" does not have the "
 232                   "(mandatory)init function\n",
 233                   aBackendInfo->bi_type, 0, 0 );
 234 #else
 235       Debug( LDAP_DEBUG_ANY,
 236                   "backend_add:  backend type \"%s\" does not have the "
 237                   "(mandatory)init function\n",
 238                   aBackendInfo->bi_type, 0, 0 );
 239 #endif
 240       return -1;
 241    }
 242
 243    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 244 #ifdef NEW_LOGGING
 245         LDAP_LOG( BACKEND, ERR,
 246                   "backend_add:  initialization for type \"%s\" failed\n",
 247                   aBackendInfo->bi_type, 0, 0 );
 248 #else
 249       Debug( LDAP_DEBUG_ANY,
 250              "backend_add: initialization for type \"%s\" failed\n",
 251              aBackendInfo->bi_type, 0, 0 );
 252 #endif
 253       return rc;
 254    }
 255
 256    /* now add the backend type to the Backend Info List */
 257    {
 258       BackendInfo *newBackendInfo = 0;
 259
 260       /* if backendInfo == binfo no deallocation of old backendInfo */
 261       if (backendInfo == binfo) {
 262          newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 263          AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
 264                 nBackendInfo);
 265       } else {
 266          newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
 267                                      (nBackendInfo + 1));
 268       }
 269       AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 270              sizeof(BackendInfo));
 271       backendInfo = newBackendInfo;
 272       nBackendInfo++;
 273
 274       return 0;
 275    }
 276 }
 277
 278 int backend_startup(Backend *be)
 279 {
 280         int i;
 281         int rc = 0;
 282
 283         if( ! ( nBackendDB > 0 ) ) {
 284                 /* no databases */
 285 #ifdef NEW_LOGGING
 286                 LDAP_LOG( BACKEND, INFO,
 287                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 288 #else
 289                 Debug( LDAP_DEBUG_ANY,
 290                         "backend_startup: %d databases to startup.\n",
 291                         nBackendDB, 0, 0 );
 292 #endif
 293                 return 1;
 294         }
 295
 296         if(be != NULL) {
 297                 /* startup a specific backend database */
 298
 299                 LDAP_TAILQ_INIT( &be->be_pending_csn_list );
 300
 301 #ifdef NEW_LOGGING
 302                 LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 303                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 304                         0, 0 );
 305 #else
 306                 Debug( LDAP_DEBUG_TRACE,
 307                         "backend_startup: starting \"%s\"\n",
 308                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 309                         0, 0 );
 310 #endif
 311
 312                 if ( be->bd_info->bi_open ) {
 313                         rc = be->bd_info->bi_open( be->bd_info );
 314                         if ( rc != 0 ) {
 315 #ifdef NEW_LOGGING
 316                                 LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
 317 #else
 318                                 Debug( LDAP_DEBUG_ANY,
 319                                         "backend_startup: bi_open failed!\n",
 320                                         0, 0, 0 );
 321 #endif
 322
 323                                 return rc;
 324                         }
 325                 }
 326
 327                 if ( be->bd_info->bi_db_open ) {
 328                         rc = be->bd_info->bi_db_open( be );
 329                         if ( rc != 0 ) {
 330 #ifdef NEW_LOGGING
 331                                 LDAP_LOG( BACKEND, CRIT,
 332                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 333 #else
 334                                 Debug( LDAP_DEBUG_ANY,
 335                                         "backend_startup: bi_db_open failed! (%d)\n",
 336                                         rc, 0, 0 );
 337 #endif
 338                                 return rc;
 339                         }
 340                 }
 341
 342                 return rc;
 343         }
 344
 345         /* open each backend type */
 346         for( i = 0; i < nBackendInfo; i++ ) {
 347                 if( backendInfo[i].bi_nDB == 0) {
 348                         /* no database of this type, don't open */
 349                         continue;
 350                 }
 351
 352                 if( backendInfo[i].bi_open ) {
 353                         rc = backendInfo[i].bi_open(
 354                                 &backendInfo[i] );
 355                         if ( rc != 0 ) {
 356 #ifdef NEW_LOGGING
 357                                 LDAP_LOG( BACKEND, CRIT,
 358                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 359 #else
 360                                 Debug( LDAP_DEBUG_ANY,
 361                                         "backend_startup: bi_open %d failed!\n",
 362                                         i, 0, 0 );
 363 #endif
 364                                 return rc;
 365                         }
 366                 }
 367         }
 368
 369         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 370         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 371         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 372
 373         /* open each backend database */
 374         for( i = 0; i < nBackendDB; i++ ) {
 375                 /* append global access controls */
 376                 acl_append( &backendDB[i].be_acl, global_acl );
 377
 378                 LDAP_TAILQ_INIT( &backendDB[i].be_pending_csn_list );
 379
 380                 if ( backendDB[i].be_suffix == NULL ) {
 381 #ifdef NEW_LOGGING
 382                         LDAP_LOG( BACKEND, CRIT,
 383                                 "backend_startup: warning, database %d (%s) "
 384                                 "has no suffix\n",
 385                                 i, backendDB[i].bd_info->bi_type, 0 );
 386 #else
 387                         Debug( LDAP_DEBUG_ANY,
 388                                 "backend_startup: warning, database %d (%s) "
 389                                 "has no suffix\n",
 390                                 i, backendDB[i].bd_info->bi_type, 0 );
 391 #endif
 392                 }
 393
 394                 if ( backendDB[i].bd_info->bi_db_open ) {
 395                         rc = backendDB[i].bd_info->bi_db_open(
 396                                 &backendDB[i] );
 397                         if ( rc != 0 ) {
 398 #ifdef NEW_LOGGING
 399                                 LDAP_LOG( BACKEND, CRIT,
 400                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 401 #else
 402                                 Debug( LDAP_DEBUG_ANY,
 403                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 404                                         i, rc, 0 );
 405 #endif
 406                                 return rc;
 407                         }
 408                 }
 409
 410                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 411                         syncinfo_t *si;
 412                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 413                                 si->si_be = &backendDB[i];
 414                                 init_syncrepl( si );
 415                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 416                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 417                                                 si->si_interval, do_syncrepl, (void *) si );
 418                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 419                         }
 420                 }
 421         }
 422
 423         return rc;
 424 }
 425
 426 int backend_num( Backend *be )
 427 {
 428         int i;
 429
 430         if( be == NULL ) return -1;
 431
 432         for( i = 0; i < nBackendDB; i++ ) {
 433                 if( be == &backendDB[i] ) return i;
 434         }
 435         return -1;
 436 }
 437
 438 int backend_shutdown( Backend *be )
 439 {
 440         int i;
 441         int rc = 0;
 442
 443         if( be != NULL ) {
 444                 /* shutdown a specific backend database */
 445
 446                 if ( be->bd_info->bi_nDB == 0 ) {
 447                         /* no database of this type, we never opened it */
 448                         return 0;
 449                 }
 450
 451                 if ( be->bd_info->bi_db_close ) {
 452                         be->bd_info->bi_db_close( be );
 453                 }
 454
 455                 if( be->bd_info->bi_close ) {
 456                         be->bd_info->bi_close( be->bd_info );
 457                 }
 458
 459                 return 0;
 460         }
 461
 462         /* close each backend database */
 463         for( i = 0; i < nBackendDB; i++ ) {
 464                 if ( backendDB[i].bd_info->bi_db_close ) {
 465                         backendDB[i].bd_info->bi_db_close(
 466                                 &backendDB[i] );
 467                 }
 468
 469                 if(rc != 0) {
 470 #ifdef NEW_LOGGING
 471                         LDAP_LOG( BACKEND, NOTICE,
 472                                 "backend_shutdown: bi_close %s failed!\n",
 473                                 backendDB[i].be_type, 0, 0 );
 474 #else
 475                         Debug( LDAP_DEBUG_ANY,
 476                                 "backend_close: bi_close %s failed!\n",
 477                                 backendDB[i].be_type, 0, 0 );
 478 #endif
 479                 }
 480         }
 481
 482         /* close each backend type */
 483         for( i = 0; i < nBackendInfo; i++ ) {
 484                 if( backendInfo[i].bi_nDB == 0 ) {
 485                         /* no database of this type */
 486                         continue;
 487                 }
 488
 489                 if( backendInfo[i].bi_close ) {
 490                         backendInfo[i].bi_close(
 491                                 &backendInfo[i] );
 492                 }
 493         }
 494
 495         return 0;
 496 }
 497
 498 int backend_destroy(void)
 499 {
 500         int i;
 501         BackendDB *bd;
 502
 503         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 504
 505         /* destroy each backend database */
 506         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 507                 if ( bd->bd_info->bi_db_destroy ) {
 508                         bd->bd_info->bi_db_destroy( bd );
 509                 }
 510                 ber_bvarray_free( bd->be_suffix );
 511                 ber_bvarray_free( bd->be_nsuffix );
 512                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 513                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 514                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 515                 acl_destroy( bd->be_acl, global_acl );
 516         }
 517         free( backendDB );
 518
 519         /* destroy each backend type */
 520         for( i = 0; i < nBackendInfo; i++ ) {
 521                 if( backendInfo[i].bi_destroy ) {
 522                         backendInfo[i].bi_destroy(
 523                                 &backendInfo[i] );
 524                 }
 525         }
 526
 527 #ifdef SLAPD_MODULES
 528         if (backendInfo != binfo) {
 529            free(backendInfo);
 530         }
 531 #endif /* SLAPD_MODULES */
 532
 533         nBackendInfo = 0;
 534         backendInfo = NULL;
 535
 536         return 0;
 537 }
 538
 539 BackendInfo* backend_info(const char *type)
 540 {
 541         int i;
 542
 543         /* search for the backend type */
 544         for( i = 0; i < nBackendInfo; i++ ) {
 545                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 546                         return &backendInfo[i];
 547                 }
 548         }
 549
 550         return NULL;
 551 }
 552
 553
 554 BackendDB *
 555 backend_db_init(
 556     const char  *type
 557 )
 558 {
 559         Backend *be;
 560         BackendInfo *bi = backend_info(type);
 561         int     rc = 0;
 562
 563         if( bi == NULL ) {
 564                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 565                 return NULL;
 566         }
 567
 568         backendDB = (BackendDB *) ch_realloc(
 569                         (char *) backendDB,
 570                     (nBackendDB + 1) * sizeof(Backend) );
 571
 572         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 573
 574         be = &backends[nbackends++];
 575
 576         be->bd_info = bi;
 577         be->be_def_limit = deflimit;
 578         be->be_dfltaccess = global_default_access;
 579
 580         be->be_restrictops = global_restrictops;
 581         be->be_requires = global_requires;
 582         be->be_ssf_set = global_ssf_set;
 583
 584         be->be_context_csn.bv_len = 0;
 585         be->be_context_csn.bv_val = NULL;
 586         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 587         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 588
 589         LDAP_STAILQ_INIT( &be->be_syncinfo );
 590
 591         /* assign a default depth limit for alias deref */
 592         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 593
 594         if(bi->bi_db_init) {
 595                 rc = bi->bi_db_init( be );
 596         }
 597
 598         if(rc != 0) {
 599                 fprintf( stderr, "database init failed (%s)\n", type );
 600                 nbackends--;
 601                 return NULL;
 602         }
 603
 604         bi->bi_nDB++;
 605         return( be );
 606 }
 607
 608 void
 609 be_db_close( void )
 610 {
 611         int     i;
 612
 613         for ( i = 0; i < nbackends; i++ ) {
 614                 if ( backends[i].bd_info->bi_db_close ) {
 615                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 616                 }
 617         }
 618 }
 619
 620 Backend *
 621 select_backend(
 622         struct berval * dn,
 623         int manageDSAit,
 624         int noSubs )
 625 {
 626         int     i, j;
 627         ber_len_t len, dnlen = dn->bv_len;
 628         Backend *be = NULL;
 629
 630         for ( i = 0; i < nbackends; i++ ) {
 631                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 632                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 633                 {
 634                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 635                                 && noSubs )
 636                         {
 637                                 continue;
 638                         }
 639
 640                         len = backends[i].be_nsuffix[j].bv_len;
 641
 642                         if ( len > dnlen ) {
 643                                 /* suffix is longer than DN */
 644                                 continue;
 645                         }
 646
 647                         /*
 648                          * input DN is normalized, so the separator check
 649                          * need not look at escaping
 650                          */
 651                         if ( len && len < dnlen &&
 652                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 653                         {
 654                                 continue;
 655                         }
 656
 657                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 658                                 &dn->bv_val[dnlen-len] ) == 0 )
 659                         {
 660                                 if( be == NULL ) {
 661                                         be = &backends[i];
 662
 663                                         if( manageDSAit && len == dnlen &&
 664                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 665                                                 continue;
 666                                         }
 667                                 } else {
 668                                         be = &backends[i];
 669                                 }
 670                                 return be;
 671                         }
 672                 }
 673         }
 674
 675         return be;
 676 }
 677
 678 int
 679 be_issuffix(
 680     Backend     *be,
 681     struct berval       *bvsuffix
 682 )
 683 {
 684         int     i;
 685
 686         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 687                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 688                         return( 1 );
 689                 }
 690         }
 691
 692         return( 0 );
 693 }
 694
 695 int
 696 be_isroot( Backend *be, struct berval *ndn )
 697 {
 698         if ( !ndn->bv_len ) {
 699                 return( 0 );
 700         }
 701
 702         if ( !be->be_rootndn.bv_len ) {
 703                 return( 0 );
 704         }
 705
 706         return dn_match( &be->be_rootndn, ndn );
 707 }
 708
 709 int
 710 be_isupdate( Backend *be, struct berval *ndn )
 711 {
 712         if ( !ndn->bv_len ) {
 713                 return( 0 );
 714         }
 715
 716         if ( !be->be_update_ndn.bv_len ) {
 717                 return( 0 );
 718         }
 719
 720         return dn_match( &be->be_update_ndn, ndn );
 721 }
 722
 723 struct berval *
 724 be_root_dn( Backend *be )
 725 {
 726         return &be->be_rootdn;
 727 }
 728
 729 int
 730 be_isroot_pw( Operation *op )
 731 {
 732         int result;
 733         char *errmsg;
 734
 735         if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
 736                 return 0;
 737         }
 738
 739         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 740                 return 0;
 741         }
 742
 743 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 744         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 745 #ifdef SLAPD_SPASSWD
 746         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 747 #endif
 748 #endif
 749
 750         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 751
 752 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 753 #ifdef SLAPD_SPASSWD
 754         lutil_passwd_sasl_conn = NULL;
 755 #endif
 756         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 757 #endif
 758
 759         return result == 0;
 760 }
 761
 762 int
 763 be_entry_release_rw(
 764         Operation *op,
 765         Entry *e,
 766         int rw )
 767 {
 768         if ( op->o_bd->be_release ) {
 769                 /* free and release entry from backend */
 770                 return op->o_bd->be_release( op, e, rw );
 771         } else {
 772                 /* free entry */
 773                 entry_free( e );
 774                 return 0;
 775         }
 776 }
 777
 778 int
 779 backend_unbind( Operation *op, SlapReply *rs )
 780 {
 781         int             i;
 782
 783         for ( i = 0; i < nbackends; i++ ) {
 784 #if defined( LDAP_SLAPI )
 785                 if ( op->o_pb ) {
 786                         int rc;
 787                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 788                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 789                         rc = slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 790                                         (Slapi_PBlock *)op->o_pb );
 791                         if ( rc < 0 ) {
 792                                 /*
 793                                  * A preoperation plugin failure will abort the
 794                                  * entire operation.
 795                                  */
 796 #ifdef NEW_LOGGING
 797                                 LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 798                                                 "failed\n", 0, 0, 0);
 799 #else
 800                                 Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 801                                                 "failed.\n", 0, 0, 0);
 802 #endif
 803                                 return 0;
 804                         }
 805                 }
 806 #endif /* defined( LDAP_SLAPI ) */
 807
 808                 if ( backends[i].be_unbind ) {
 809                         op->o_bd = &backends[i];
 810                         (*backends[i].be_unbind)( op, rs );
 811                 }
 812
 813 #if defined( LDAP_SLAPI )
 814                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 815                                 (Slapi_PBlock *)op->o_pb ) < 0 ) {
 816 #ifdef NEW_LOGGING
 817                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 818                                         "failed\n", 0, 0, 0);
 819 #else
 820                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 821                                         "failed.\n", 0, 0, 0);
 822 #endif
 823                 }
 824 #endif /* defined( LDAP_SLAPI ) */
 825         }
 826
 827         return 0;
 828 }
 829
 830 int
 831 backend_connection_init(
 832         Connection   *conn
 833 )
 834 {
 835         int     i;
 836
 837         for ( i = 0; i < nbackends; i++ ) {
 838                 if ( backends[i].be_connection_init ) {
 839                         (*backends[i].be_connection_init)( &backends[i], conn);
 840                 }
 841         }
 842
 843         return 0;
 844 }
 845
 846 int
 847 backend_connection_destroy(
 848         Connection   *conn
 849 )
 850 {
 851         int     i;
 852
 853         for ( i = 0; i < nbackends; i++ ) {
 854                 if ( backends[i].be_connection_destroy ) {
 855                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 856                 }
 857         }
 858
 859         return 0;
 860 }
 861
 862 static int
 863 backend_check_controls(
 864         Operation *op,
 865         SlapReply *rs )
 866 {
 867         LDAPControl **ctrls = op->o_ctrls;
 868         rs->sr_err = LDAP_SUCCESS;
 869
 870         if( ctrls ) {
 871                 for( ; *ctrls != NULL ; ctrls++ ) {
 872                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 873                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 874                         {
 875                                 rs->sr_text = "control unavailable in context";
 876                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 877                                 break;
 878                         }
 879                 }
 880         }
 881
 882         return rs->sr_err;
 883 }
 884
 885 int
 886 backend_check_restrictions(
 887         Operation *op,
 888         SlapReply *rs,
 889         struct berval *opdata )
 890 {
 891         slap_mask_t restrictops;
 892         slap_mask_t requires;
 893         slap_mask_t opflag;
 894         slap_ssf_set_t *ssf;
 895         int updateop = 0;
 896         int starttls = 0;
 897         int session = 0;
 898
 899         if( op->o_bd ) {
 900                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 901                         return rs->sr_err;
 902                 }
 903
 904                 restrictops = op->o_bd->be_restrictops;
 905                 requires = op->o_bd->be_requires;
 906                 ssf = &op->o_bd->be_ssf_set;
 907
 908         } else {
 909                 restrictops = global_restrictops;
 910                 requires = global_requires;
 911                 ssf = &global_ssf_set;
 912         }
 913
 914         switch( op->o_tag ) {
 915         case LDAP_REQ_ADD:
 916                 opflag = SLAP_RESTRICT_OP_ADD;
 917                 updateop++;
 918                 break;
 919         case LDAP_REQ_BIND:
 920                 opflag = SLAP_RESTRICT_OP_BIND;
 921                 session++;
 922                 break;
 923         case LDAP_REQ_COMPARE:
 924                 opflag = SLAP_RESTRICT_OP_COMPARE;
 925                 break;
 926         case LDAP_REQ_DELETE:
 927                 updateop++;
 928                 opflag = SLAP_RESTRICT_OP_DELETE;
 929                 break;
 930         case LDAP_REQ_EXTENDED:
 931                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 932
 933                 if( !opdata ) {
 934                         /* treat unspecified as a modify */
 935                         opflag = SLAP_RESTRICT_OP_MODIFY;
 936                         updateop++;
 937                         break;
 938                 }
 939
 940                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 941                         session++;
 942                         starttls++;
 943                         break;
 944                 }
 945
 946                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 947                         break;
 948                 }
 949
 950                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 951                         break;
 952                 }
 953
 954                 /* treat everything else as a modify */
 955                 opflag = SLAP_RESTRICT_OP_MODIFY;
 956                 updateop++;
 957                 break;
 958
 959         case LDAP_REQ_MODIFY:
 960                 updateop++;
 961                 opflag = SLAP_RESTRICT_OP_MODIFY;
 962                 break;
 963         case LDAP_REQ_RENAME:
 964                 updateop++;
 965                 opflag = SLAP_RESTRICT_OP_RENAME;
 966                 break;
 967         case LDAP_REQ_SEARCH:
 968                 opflag = SLAP_RESTRICT_OP_SEARCH;
 969                 break;
 970         case LDAP_REQ_UNBIND:
 971                 session++;
 972                 opflag = 0;
 973                 break;
 974         default:
 975                 rs->sr_text = "restrict operations internal error";
 976                 rs->sr_err = LDAP_OTHER;
 977                 return rs->sr_err;
 978         }
 979
 980         if ( !starttls ) {
 981                 /* these checks don't apply to StartTLS */
 982
 983                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 984                 if( op->o_transport_ssf < ssf->sss_transport ) {
 985                         rs->sr_text = "transport confidentiality required";
 986                         return rs->sr_err;
 987                 }
 988
 989                 if( op->o_tls_ssf < ssf->sss_tls ) {
 990                         rs->sr_text = "TLS confidentiality required";
 991                         return rs->sr_err;
 992                 }
 993
 994
 995                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 996                         /* simple bind specific check */
 997                         if( op->o_ssf < ssf->sss_simple_bind ) {
 998                                 rs->sr_text = "confidentiality required";
 999                                 return rs->sr_err;
1000                         }
1001                 }
1002
1003                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1004                         /* these checks don't apply to SASL bind */
1005
1006                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1007                                 rs->sr_text = "SASL confidentiality required";
1008                                 return rs->sr_err;
1009                         }
1010
1011                         if( op->o_ssf < ssf->sss_ssf ) {
1012                                 rs->sr_text = "confidentiality required";
1013                                 return rs->sr_err;
1014                         }
1015                 }
1016
1017                 if( updateop ) {
1018                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1019                                 rs->sr_text = "transport update confidentiality required";
1020                                 return rs->sr_err;
1021                         }
1022
1023                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1024                                 rs->sr_text = "TLS update confidentiality required";
1025                                 return rs->sr_err;
1026                         }
1027
1028                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1029                                 rs->sr_text = "SASL update confidentiality required";
1030                                 return rs->sr_err;
1031                         }
1032
1033                         if( op->o_ssf < ssf->sss_update_ssf ) {
1034                                 rs->sr_text = "update confidentiality required";
1035                                 return rs->sr_err;
1036                         }
1037
1038                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1039                                 op->o_ndn.bv_len == 0 )
1040                         {
1041                                 rs->sr_text = "modifications require authentication";
1042                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1043                                 return rs->sr_err;
1044                         }
1045
1046 #ifdef SLAP_X_LISTENER_MOD
1047                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1048                                 /* no "w" mode means readonly */
1049                                 rs->sr_text = "modifications not allowed on this listener";
1050                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1051                                 return rs->sr_err;
1052                         }
1053 #endif /* SLAP_X_LISTENER_MOD */
1054                 }
1055         }
1056
1057         if ( !session ) {
1058                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1059
1060                 if( requires & SLAP_REQUIRE_STRONG ) {
1061                         /* should check mechanism */
1062                         if( ( op->o_transport_ssf < ssf->sss_transport
1063                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1064                                 || op->o_dn.bv_len == 0 )
1065                         {
1066                                 rs->sr_text = "strong(er) authentication required";
1067                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1068                                 return rs->sr_err;
1069                         }
1070                 }
1071
1072                 if( requires & SLAP_REQUIRE_SASL ) {
1073                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1074                                 rs->sr_text = "SASL authentication required";
1075                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1076                                 return rs->sr_err;
1077                         }
1078                 }
1079
1080                 if( requires & SLAP_REQUIRE_AUTHC ) {
1081                         if( op->o_dn.bv_len == 0 ) {
1082                                 rs->sr_text = "authentication required";
1083                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1084                                 return rs->sr_err;
1085                         }
1086                 }
1087
1088                 if( requires & SLAP_REQUIRE_BIND ) {
1089                         int version;
1090                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1091                         version = op->o_conn->c_protocol;
1092                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1093
1094                         if( !version ) {
1095                                 /* no bind has occurred */
1096                                 rs->sr_text = "BIND required";
1097                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1098                                 return rs->sr_err;
1099                         }
1100                 }
1101
1102                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1103                         if( op->o_protocol < LDAP_VERSION3 ) {
1104                                 /* no bind has occurred */
1105                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1106                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1107                                 return rs->sr_err;
1108                         }
1109                 }
1110
1111 #ifdef SLAP_X_LISTENER_MOD
1112                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1113                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1114                                 /* no "x" mode means bind required */
1115                                 rs->sr_text = "bind required on this listener";
1116                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1117                                 return rs->sr_err;
1118                         }
1119                 }
1120
1121                 if ( !starttls && !updateop ) {
1122                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1123                                 /* no "r" mode means no read */
1124                                 rs->sr_text = "read not allowed on this listener";
1125                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1126                                 return rs->sr_err;
1127                         }
1128                 }
1129 #endif /* SLAP_X_LISTENER_MOD */
1130
1131         }
1132
1133         if( restrictops & opflag ) {
1134                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1135                         rs->sr_text = "read operations restricted";
1136                 } else {
1137                         rs->sr_text = "operation restricted";
1138                 }
1139                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1140                 return rs->sr_err;
1141         }
1142
1143         rs->sr_err = LDAP_SUCCESS;
1144         return rs->sr_err;
1145 }
1146
1147 int backend_check_referrals( Operation *op, SlapReply *rs )
1148 {
1149         rs->sr_err = LDAP_SUCCESS;
1150
1151         if( op->o_bd->be_chk_referrals ) {
1152                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1153
1154                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1155                         send_ldap_result( op, rs );
1156                 }
1157         }
1158
1159         return rs->sr_err;
1160 }
1161
1162 int
1163 be_entry_get_rw(
1164         Operation *op,
1165         struct berval *ndn,
1166         ObjectClass *oc,
1167         AttributeDescription *at,
1168         int rw,
1169         Entry **e )
1170 {
1171         int rc;
1172
1173         *e = NULL;
1174
1175         if (op->o_bd == NULL) {
1176                 rc = LDAP_NO_SUCH_OBJECT;
1177         } else if ( op->o_bd->be_fetch ) {
1178                 rc = ( op->o_bd->be_fetch )( op, ndn,
1179                         oc, at, rw, e );
1180         } else {
1181                 rc = LDAP_UNWILLING_TO_PERFORM;
1182         }
1183         return rc;
1184 }
1185
1186 int
1187 backend_group(
1188         Operation *op,
1189         Entry   *target,
1190         struct berval *gr_ndn,
1191         struct berval *op_ndn,
1192         ObjectClass *group_oc,
1193         AttributeDescription *group_at
1194 )
1195 {
1196         Entry *e;
1197         Attribute *a;
1198         int rc;
1199         GroupAssertion *g;
1200         Backend *be = op->o_bd;
1201
1202         if ( op->o_abandon ) return SLAPD_ABANDON;
1203
1204         op->o_bd = select_backend( gr_ndn, 0, 0 );
1205
1206         for (g = op->o_groups; g; g=g->ga_next) {
1207                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1208                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1209                         continue;
1210                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1211                         break;
1212         }
1213
1214         if (g) {
1215                 rc = g->ga_res;
1216                 goto done;
1217         }
1218
1219         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1220                 e = target;
1221                 rc = 0;
1222         } else {
1223                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1224         }
1225         if ( e ) {
1226                 a = attr_find( e->e_attrs, group_at );
1227                 if ( a ) {
1228                         /* If the attribute is a subtype of labeledURI, treat this as
1229                          * a dynamic group ala groupOfURLs
1230                          */
1231                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1232                                 int i;
1233                                 LDAPURLDesc *ludp;
1234                                 struct berval bv, nbase;
1235                                 Filter *filter;
1236                                 Entry *user;
1237                                 Backend *b2 = op->o_bd;
1238
1239                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1240                                         user = target;
1241                                 } else {
1242                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1243                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1244                                 }
1245
1246                                 if ( rc == 0 ) {
1247                                         rc = 1;
1248                                         for (i=0; a->a_vals[i].bv_val; i++) {
1249                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1250                                                         continue;
1251                                                 nbase.bv_val = NULL;
1252                                                 /* host part must be empty */
1253                                                 /* attrs and extensions parts must be empty */
1254                                                 if (( ludp->lud_host && *ludp->lud_host )
1255                                                         || ludp->lud_attrs || ludp->lud_exts )
1256                                                         goto loopit;
1257                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1258                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1259                                                         goto loopit;
1260                                                 switch(ludp->lud_scope) {
1261                                                 case LDAP_SCOPE_BASE:
1262                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1263                                                         break;
1264                                                 case LDAP_SCOPE_ONELEVEL:
1265                                                         dnParent(op_ndn, &bv );
1266                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1267                                                         break;
1268                                                 case LDAP_SCOPE_SUBTREE:
1269                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1270                                                         break;
1271                                                 case LDAP_SCOPE_SUBORDINATE:
1272                                                         if ( dn_match( &nbase, op_ndn ) &&
1273                                                                 !dnIsSuffix(op_ndn, &nbase ))
1274                                                         {
1275                                                                 goto loopit;
1276                                                         }
1277                                                 }
1278                                                 filter = str2filter_x( op, ludp->lud_filter );
1279                                                 if ( filter ) {
1280                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1281                                                         {
1282                                                                 rc = 0;
1283                                                         }
1284                                                         filter_free_x( op, filter );
1285                                                 }
1286         loopit:
1287                                                 ldap_free_urldesc( ludp );
1288                                                 if ( nbase.bv_val ) {
1289                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1290                                                 }
1291                                                 if ( rc == 0 ) break;
1292                                         }
1293                                         if ( user != target ) {
1294                                                 be_entry_release_r( op, user );
1295                                         }
1296                                 }
1297                                 op->o_bd = b2;
1298                         } else {
1299                                 rc = value_find_ex( group_at,
1300                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1301                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1302                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1303                         }
1304                 } else {
1305                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1306                 }
1307                 if (e != target ) {
1308                         be_entry_release_r( op, e );
1309                 }
1310         } else {
1311                 rc = LDAP_NO_SUCH_OBJECT;
1312         }
1313
1314         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1315                 g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len, 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 int
1331 backend_attribute(
1332         Operation *op,
1333         Entry   *target,
1334         struct berval   *edn,
1335         AttributeDescription *entry_at,
1336         BerVarray *vals
1337 )
1338 {
1339         Entry *e;
1340         Attribute *a;
1341         int i, j, rc = LDAP_SUCCESS;
1342         AccessControlState acl_state = ACL_STATE_INIT;
1343         Backend *be = op->o_bd;
1344
1345         op->o_bd = select_backend( edn, 0, 0 );
1346
1347         if ( target && dn_match( &target->e_nname, edn ) ) {
1348                 e = target;
1349         } else {
1350                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1351         }
1352
1353         if ( e ) {
1354                 a = attr_find( e->e_attrs, entry_at );
1355                 if ( a ) {
1356                         BerVarray v;
1357
1358                         if ( op->o_conn && access_allowed( op,
1359                                 e, entry_at, NULL, ACL_AUTH,
1360                                 &acl_state ) == 0 ) {
1361                                 rc = LDAP_INSUFFICIENT_ACCESS;
1362                                 goto freeit;
1363                         }
1364
1365                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1366
1367                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1368                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1369                                 if ( op->o_conn && access_allowed( op,
1370                                         e, entry_at,
1371                                         &a->a_nvals[i],
1372                                         ACL_AUTH, &acl_state ) == 0 ) {
1373                                         continue;
1374                                 }
1375                                 ber_dupbv_x( &v[j],
1376                                         &a->a_nvals[i], op->o_tmpmemctx );
1377                                 if (v[j].bv_val ) j++;
1378                         }
1379                         if (j == 0) {
1380                                 op->o_tmpfree( v, op->o_tmpmemctx );
1381                                 *vals = NULL;
1382                                 rc = LDAP_INSUFFICIENT_ACCESS;
1383                         } else {
1384                                 v[j].bv_val = NULL;
1385                                 v[j].bv_len = 0;
1386                                 *vals = v;
1387                                 rc = LDAP_SUCCESS;
1388                         }
1389                 }
1390 freeit:         if (e != target ) {
1391                         be_entry_release_r( op, e );
1392                 }
1393         }
1394
1395         op->o_bd = be;
1396         return rc;
1397 }
1398
1399 Attribute *backend_operational(
1400         Operation *op,
1401         SlapReply *rs,
1402         int opattrs     )
1403 {
1404         Attribute *a = NULL, **ap = &a;
1405
1406         /*
1407          * If operational attributes (allegedly) are required,
1408          * and the backend supports specific operational attributes,
1409          * add them to the attribute list
1410          */
1411         if ( opattrs || ( op->ors_attrs &&
1412                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1413                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1414                 ap = &(*ap)->a_next;
1415         }
1416
1417         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1418                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1419         }
1420
1421         return a;
1422 }
1423