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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /* backend.c - routines for dealing with back-end databases */
   7
   8
   9 #include "portable.h"
  10
  11 #include <stdio.h>
  12
  13 #include <ac/string.h>
  14 #include <ac/socket.h>
  15 #include <sys/stat.h>
  16
  17 #include "slap.h"
  18 #include "lutil.h"
  19 #include "lber_pvt.h"
  20
  21 #include "ldap_rq.h"
  22
  23 #ifdef LDAP_SLAPI
  24 #include "slapi.h"
  25 #endif
  26
  27 /*
  28  * If a module is configured as dynamic, its header should not
  29  * get included into slapd. While this is a general rule and does
  30  * not have much of an effect in UNIX, this rule should be adhered
  31  * to for Windows, where dynamic object code should not be implicitly
  32  * imported into slapd without appropriate __declspec(dllimport) directives.
  33  */
  34
  35 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  36 #include "back-bdb/external.h"
  37 #endif
  38 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  39 #include "back-dnssrv/external.h"
  40 #endif
  41 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  42 #include "back-hdb/external.h"
  43 #endif
  44 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  45 #include "back-ldap/external.h"
  46 #endif
  47 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  48 #include "back-ldbm/external.h"
  49 #endif
  50 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  51 #include "back-meta/external.h"
  52 #endif
  53 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  54 #include "back-monitor/external.h"
  55 #endif
  56 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
  57 #include "back-null/external.h"
  58 #endif
  59 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  60 #include "back-passwd/external.h"
  61 #endif
  62 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  63 #include "back-perl/external.h"
  64 #endif
  65 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  66 #include "back-shell/external.h"
  67 #endif
  68 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  69 #include "back-tcl/external.h"
  70 #endif
  71 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  72 #include "back-sql/external.h"
  73 #endif
  74 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
  75 #include "private/external.h"
  76 #endif
  77
  78 static BackendInfo binfo[] = {
  79 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  80         {"bdb", bdb_initialize},
  81 #endif
  82 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  83         {"dnssrv",      dnssrv_back_initialize},
  84 #endif
  85 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  86         {"hdb", hdb_initialize},
  87 #endif
  88 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  89         {"ldap",        ldap_back_initialize},
  90 #endif
  91 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  92         {"ldbm",        ldbm_back_initialize},
  93 #endif
  94 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  95         {"meta",        meta_back_initialize},
  96 #endif
  97 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  98         {"monitor",     monitor_back_initialize},
  99 #endif
 100 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
 101         {"null",        null_back_initialize},
 102 #endif
 103 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 104         {"passwd",      passwd_back_initialize},
 105 #endif
 106 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 107         {"perl",        perl_back_initialize},
 108 #endif
 109 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 110         {"shell",       shell_back_initialize},
 111 #endif
 112 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 113         {"tcl",         tcl_back_initialize},
 114 #endif
 115 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
 116         {"sql",         sql_back_initialize},
 117 #endif
 118         /* for any private backend */
 119 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
 120         {"private",     private_back_initialize},
 121 #endif
 122         {NULL}
 123 };
 124
 125 int                     nBackendInfo = 0;
 126 BackendInfo     *backendInfo = NULL;
 127
 128 int                     nBackendDB = 0;
 129 BackendDB       *backendDB = NULL;
 130
 131 ldap_pvt_thread_pool_t  syncrepl_pool;
 132 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 133
 134 int backend_init(void)
 135 {
 136         int rc = -1;
 137
 138         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 139
 140         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 141                 /* already initialized */
 142 #ifdef NEW_LOGGING
 143                 LDAP_LOG( BACKEND, ERR,
 144                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 145 #else
 146                 Debug( LDAP_DEBUG_ANY,
 147                         "backend_init: already initialized.\n", 0, 0, 0 );
 148 #endif
 149                 return -1;
 150         }
 151
 152         for( ;
 153                 binfo[nBackendInfo].bi_type != NULL;
 154                 nBackendInfo++ )
 155         {
 156                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 157
 158                 if(rc != 0) {
 159 #ifdef NEW_LOGGING
 160                         LDAP_LOG( BACKEND, INFO,
 161                                 "backend_init:  initialized for type \"%s\"\n",
 162                                 binfo[nBackendInfo].bi_type, 0, 0 );
 163 #else
 164                         Debug( LDAP_DEBUG_ANY,
 165                                 "backend_init: initialized for type \"%s\"\n",
 166                                 binfo[nBackendInfo].bi_type, 0, 0 );
 167 #endif
 168                         /* destroy those we've already inited */
 169                         for( nBackendInfo--;
 170                                 nBackendInfo >= 0 ;
 171                                 nBackendInfo-- )
 172                         {
 173                                 if ( binfo[nBackendInfo].bi_destroy ) {
 174                                         binfo[nBackendInfo].bi_destroy(
 175                                                 &binfo[nBackendInfo] );
 176                                 }
 177                         }
 178                         return rc;
 179                 }
 180         }
 181
 182         if ( nBackendInfo > 0) {
 183                 backendInfo = binfo;
 184                 return 0;
 185         }
 186
 187 #ifdef SLAPD_MODULES
 188         return 0;
 189 #else
 190
 191 #ifdef NEW_LOGGING
 192         LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
 193 #else
 194         Debug( LDAP_DEBUG_ANY,
 195                 "backend_init: failed\n",
 196                 0, 0, 0 );
 197 #endif
 198
 199         return rc;
 200 #endif /* SLAPD_MODULES */
 201 }
 202
 203 int backend_add(BackendInfo *aBackendInfo)
 204 {
 205    int rc = 0;
 206
 207    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 208 #ifdef NEW_LOGGING
 209         LDAP_LOG( BACKEND, ERR,
 210                   "backend_add:  initialization for type \"%s\" failed\n",
 211                   aBackendInfo->bi_type, 0, 0 );
 212 #else
 213       Debug( LDAP_DEBUG_ANY,
 214              "backend_add: initialization for type \"%s\" failed\n",
 215              aBackendInfo->bi_type, 0, 0 );
 216 #endif
 217       return rc;
 218    }
 219
 220    /* now add the backend type to the Backend Info List */
 221    {
 222       BackendInfo *newBackendInfo = 0;
 223
 224       /* if backendInfo == binfo no deallocation of old backendInfo */
 225       if (backendInfo == binfo) {
 226          newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 227          AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
 228                 nBackendInfo);
 229       } else {
 230          newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
 231                                      (nBackendInfo + 1));
 232       }
 233       AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 234              sizeof(BackendInfo));
 235       backendInfo = newBackendInfo;
 236       nBackendInfo++;
 237
 238       return 0;
 239    }
 240 }
 241
 242 int backend_startup(Backend *be)
 243 {
 244         int i;
 245         int rc = 0;
 246
 247         if( ! ( nBackendDB > 0 ) ) {
 248                 /* no databases */
 249 #ifdef NEW_LOGGING
 250                 LDAP_LOG( BACKEND, INFO,
 251                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 252 #else
 253                 Debug( LDAP_DEBUG_ANY,
 254                         "backend_startup: %d databases to startup.\n",
 255                         nBackendDB, 0, 0 );
 256 #endif
 257                 return 1;
 258         }
 259
 260         if(be != NULL) {
 261                 /* startup a specific backend database */
 262
 263                 LDAP_TAILQ_INIT( &be->be_pending_csn_list );
 264
 265 #ifdef NEW_LOGGING
 266                 LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 267                            be->be_suffix[0].bv_val, 0, 0 );
 268 #else
 269                 Debug( LDAP_DEBUG_TRACE,
 270                         "backend_startup: starting \"%s\"\n",
 271                         be->be_suffix[0].bv_val, 0, 0 );
 272 #endif
 273
 274                 if ( be->bd_info->bi_open ) {
 275                         rc = be->bd_info->bi_open( be->bd_info );
 276                         if ( rc != 0 ) {
 277 #ifdef NEW_LOGGING
 278                                 LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
 279 #else
 280                                 Debug( LDAP_DEBUG_ANY,
 281                                         "backend_startup: bi_open failed!\n",
 282                                         0, 0, 0 );
 283 #endif
 284
 285                                 return rc;
 286                         }
 287                 }
 288
 289                 if ( be->bd_info->bi_db_open ) {
 290                         rc = be->bd_info->bi_db_open( be );
 291                         if ( rc != 0 ) {
 292 #ifdef NEW_LOGGING
 293                                 LDAP_LOG( BACKEND, CRIT,
 294                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 295 #else
 296                                 Debug( LDAP_DEBUG_ANY,
 297                                         "backend_startup: bi_db_open failed! (%d)\n",
 298                                         rc, 0, 0 );
 299 #endif
 300                                 return rc;
 301                         }
 302                 }
 303
 304                 return rc;
 305         }
 306
 307         /* open each backend type */
 308         for( i = 0; i < nBackendInfo; i++ ) {
 309                 if( backendInfo[i].bi_nDB == 0) {
 310                         /* no database of this type, don't open */
 311                         continue;
 312                 }
 313
 314                 if( backendInfo[i].bi_open ) {
 315                         rc = backendInfo[i].bi_open(
 316                                 &backendInfo[i] );
 317                         if ( rc != 0 ) {
 318 #ifdef NEW_LOGGING
 319                                 LDAP_LOG( BACKEND, CRIT,
 320                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 321 #else
 322                                 Debug( LDAP_DEBUG_ANY,
 323                                         "backend_startup: bi_open %d failed!\n",
 324                                         i, 0, 0 );
 325 #endif
 326                                 return rc;
 327                         }
 328                 }
 329         }
 330
 331         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 332         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 333         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 334
 335         /* open each backend database */
 336         for( i = 0; i < nBackendDB; i++ ) {
 337 #ifndef SLAPD_MULTIMASTER
 338                 if ( backendDB[i].be_update_ndn.bv_val && (
 339                         !backendDB[i].be_update_refs &&
 340                         !backendDB[i].be_syncinfo &&
 341                         !default_referral ) )
 342                 {
 343 #ifdef NEW_LOGGING
 344                         LDAP_LOG( BACKEND, CRIT,
 345                                 "backend_startup: slave \"%s\" updateref missing\n",
 346                                 backendDB[i].be_suffix[0].bv_val, 0, 0 );
 347
 348 #else
 349                         Debug( LDAP_DEBUG_ANY,
 350                                 "backend_startup: slave \"%s\" updateref missing\n",
 351                                 backendDB[i].be_suffix[0].bv_val, 0, 0 );
 352 #endif
 353                         return -1;
 354                 }
 355 #endif
 356
 357                 /* append global access controls */
 358                 acl_append( &backendDB[i].be_acl, global_acl );
 359
 360                 LDAP_TAILQ_INIT( &backendDB[i].be_pending_csn_list );
 361
 362                 if ( backendDB[i].bd_info->bi_db_open ) {
 363                         rc = backendDB[i].bd_info->bi_db_open(
 364                                 &backendDB[i] );
 365                         if ( rc != 0 ) {
 366 #ifdef NEW_LOGGING
 367                                 LDAP_LOG( BACKEND, CRIT,
 368                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 369 #else
 370                                 Debug( LDAP_DEBUG_ANY,
 371                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 372                                         i, rc, 0 );
 373 #endif
 374                                 return rc;
 375                         }
 376                 }
 377
 378                 if ( backendDB[i].be_syncinfo != NULL ) {
 379                         syncinfo_t *si = ( syncinfo_t * ) backendDB[i].be_syncinfo;
 380                         si->si_be = &backendDB[i];
 381                         init_syncrepl(si);
 382                         ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 383                         ldap_pvt_runqueue_insert( &syncrepl_rq, si->si_interval,
 384                                 do_syncrepl, (void *) backendDB[i].be_syncinfo );
 385                         ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 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 #ifdef NEW_LOGGING
 437                         LDAP_LOG( BACKEND, NOTICE,
 438                                 "backend_shutdown: bi_close %s failed!\n",
 439                                 backendDB[i].be_type, 0, 0 );
 440 #else
 441                         Debug( LDAP_DEBUG_ANY,
 442                                 "backend_close: bi_close %s failed!\n",
 443                                 backendDB[i].be_type, 0, 0 );
 444 #endif
 445                 }
 446         }
 447
 448         /* close each backend type */
 449         for( i = 0; i < nBackendInfo; i++ ) {
 450                 if( backendInfo[i].bi_nDB == 0 ) {
 451                         /* no database of this type */
 452                         continue;
 453                 }
 454
 455                 if( backendInfo[i].bi_close ) {
 456                         backendInfo[i].bi_close(
 457                                 &backendInfo[i] );
 458                 }
 459         }
 460
 461         return 0;
 462 }
 463
 464 int backend_destroy(void)
 465 {
 466         int i;
 467         BackendDB *bd;
 468
 469         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 470
 471         /* destroy each backend database */
 472         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 473                 if ( bd->bd_info->bi_db_destroy ) {
 474                         bd->bd_info->bi_db_destroy( bd );
 475                 }
 476                 ber_bvarray_free( bd->be_suffix );
 477                 ber_bvarray_free( bd->be_nsuffix );
 478                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 479                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 480                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 481                 acl_destroy( bd->be_acl, global_acl );
 482         }
 483         free( backendDB );
 484
 485         /* destroy each backend type */
 486         for( i = 0; i < nBackendInfo; i++ ) {
 487                 if( backendInfo[i].bi_destroy ) {
 488                         backendInfo[i].bi_destroy(
 489                                 &backendInfo[i] );
 490                 }
 491         }
 492
 493 #ifdef SLAPD_MODULES
 494         if (backendInfo != binfo) {
 495            free(backendInfo);
 496         }
 497 #endif /* SLAPD_MODULES */
 498
 499         nBackendInfo = 0;
 500         backendInfo = NULL;
 501
 502         return 0;
 503 }
 504
 505 BackendInfo* backend_info(const char *type)
 506 {
 507         int i;
 508
 509         /* search for the backend type */
 510         for( i = 0; i < nBackendInfo; i++ ) {
 511                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 512                         return &backendInfo[i];
 513                 }
 514         }
 515
 516         return NULL;
 517 }
 518
 519
 520 BackendDB *
 521 backend_db_init(
 522     const char  *type
 523 )
 524 {
 525         Backend *be;
 526         BackendInfo *bi = backend_info(type);
 527         int     rc = 0;
 528
 529         if( bi == NULL ) {
 530                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 531                 return NULL;
 532         }
 533
 534         backendDB = (BackendDB *) ch_realloc(
 535                         (char *) backendDB,
 536                     (nBackendDB + 1) * sizeof(Backend) );
 537
 538         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 539
 540         be = &backends[nbackends++];
 541
 542         be->bd_info = bi;
 543         be->be_def_limit = deflimit;
 544         be->be_dfltaccess = global_default_access;
 545
 546         be->be_restrictops = global_restrictops;
 547         be->be_requires = global_requires;
 548         be->be_ssf_set = global_ssf_set;
 549
 550         be->be_context_csn.bv_len = 0;
 551         be->be_context_csn.bv_val = NULL;
 552         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 553         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 554
 555         be->be_syncinfo = NULL;
 556
 557         /* assign a default depth limit for alias deref */
 558         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 559
 560         if(bi->bi_db_init) {
 561                 rc = bi->bi_db_init( be );
 562         }
 563
 564         if(rc != 0) {
 565                 fprintf( stderr, "database init failed (%s)\n", type );
 566                 nbackends--;
 567                 return NULL;
 568         }
 569
 570         bi->bi_nDB++;
 571         return( be );
 572 }
 573
 574 void
 575 be_db_close( void )
 576 {
 577         int     i;
 578
 579         for ( i = 0; i < nbackends; i++ ) {
 580                 if ( backends[i].bd_info->bi_db_close ) {
 581                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 582                 }
 583         }
 584 }
 585
 586 Backend *
 587 select_backend(
 588         struct berval * dn,
 589         int manageDSAit,
 590         int noSubs )
 591 {
 592         int     i, j;
 593         ber_len_t len, dnlen = dn->bv_len;
 594         Backend *be = NULL;
 595
 596         for ( i = 0; i < nbackends; i++ ) {
 597                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 598                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 599                 {
 600                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 601                                 && noSubs )
 602                         {
 603                                 continue;
 604                         }
 605
 606                         len = backends[i].be_nsuffix[j].bv_len;
 607
 608                         if ( len > dnlen ) {
 609                                 /* suffix is longer than DN */
 610                                 continue;
 611                         }
 612
 613                         /*
 614                          * input DN is normalized, so the separator check
 615                          * need not look at escaping
 616                          */
 617                         if ( len && len < dnlen &&
 618                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 619                         {
 620                                 continue;
 621                         }
 622
 623                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 624                                 &dn->bv_val[dnlen-len] ) == 0 )
 625                         {
 626                                 if( be == NULL ) {
 627                                         be = &backends[i];
 628
 629                                         if( manageDSAit && len == dnlen &&
 630                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 631                                                 continue;
 632                                         }
 633                                 } else {
 634                                         be = &backends[i];
 635                                 }
 636                                 return be;
 637                         }
 638                 }
 639         }
 640
 641         return be;
 642 }
 643
 644 int
 645 be_issuffix(
 646     Backend     *be,
 647     struct berval       *bvsuffix
 648 )
 649 {
 650         int     i;
 651
 652         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 653                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 654                         return( 1 );
 655                 }
 656         }
 657
 658         return( 0 );
 659 }
 660
 661 int
 662 be_isroot( Backend *be, struct berval *ndn )
 663 {
 664         if ( !ndn->bv_len ) {
 665                 return( 0 );
 666         }
 667
 668         if ( !be->be_rootndn.bv_len ) {
 669                 return( 0 );
 670         }
 671
 672         return dn_match( &be->be_rootndn, ndn );
 673 }
 674
 675 int
 676 be_isupdate( Backend *be, struct berval *ndn )
 677 {
 678         if ( !ndn->bv_len ) {
 679                 return( 0 );
 680         }
 681
 682         if ( !be->be_update_ndn.bv_len ) {
 683                 return( 0 );
 684         }
 685
 686         return dn_match( &be->be_update_ndn, ndn );
 687 }
 688
 689 struct berval *
 690 be_root_dn( Backend *be )
 691 {
 692         return &be->be_rootdn;
 693 }
 694
 695 int
 696 be_isroot_pw( Operation *op )
 697 {
 698         int result;
 699         char *errmsg;
 700
 701         if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
 702                 return 0;
 703         }
 704
 705         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 706                 return 0;
 707         }
 708
 709 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 710         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 711 #ifdef SLAPD_SPASSWD
 712         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 713 #endif
 714 #endif
 715
 716         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 717
 718 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 719 #ifdef SLAPD_SPASSWD
 720         lutil_passwd_sasl_conn = NULL;
 721 #endif
 722         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 723 #endif
 724
 725         return result == 0;
 726 }
 727
 728 int
 729 be_entry_release_rw(
 730         Operation *op,
 731         Entry *e,
 732         int rw )
 733 {
 734         if ( op->o_bd->be_release ) {
 735                 /* free and release entry from backend */
 736                 return op->o_bd->be_release( op, e, rw );
 737         } else {
 738                 /* free entry */
 739                 entry_free( e );
 740                 return 0;
 741         }
 742 }
 743
 744 int
 745 backend_unbind( Operation *op, SlapReply *rs )
 746 {
 747         int             i;
 748 #if defined( LDAP_SLAPI )
 749         Slapi_PBlock *pb = op->o_pb;
 750
 751         int     rc;
 752         slapi_x_pblock_set_operation( pb, op );
 753 #endif /* defined( LDAP_SLAPI ) */
 754
 755         for ( i = 0; i < nbackends; i++ ) {
 756 #if defined( LDAP_SLAPI )
 757                 slapi_pblock_set( pb, SLAPI_BACKEND, (void *)&backends[i] );
 758                 rc = doPluginFNs( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 759                                 (Slapi_PBlock *)pb );
 760                 if ( rc < 0 ) {
 761                         /*
 762                          * A preoperation plugin failure will abort the
 763                          * entire operation.
 764                          */
 765 #ifdef NEW_LOGGING
 766                         LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 767                                         "failed\n", 0, 0, 0);
 768 #else
 769                         Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 770                                         "failed.\n", 0, 0, 0);
 771 #endif
 772                         return 0;
 773                 }
 774 #endif /* defined( LDAP_SLAPI ) */
 775
 776                 if ( backends[i].be_unbind ) {
 777                         op->o_bd = &backends[i];
 778                         (*backends[i].be_unbind)( op, rs );
 779                 }
 780
 781 #if defined( LDAP_SLAPI )
 782                 if ( doPluginFNs( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 783                                 (Slapi_PBlock *)pb ) < 0 ) {
 784 #ifdef NEW_LOGGING
 785                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 786                                         "failed\n", 0, 0, 0);
 787 #else
 788                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 789                                         "failed.\n", 0, 0, 0);
 790 #endif
 791                 }
 792 #endif /* defined( LDAP_SLAPI ) */
 793         }
 794
 795         return 0;
 796 }
 797
 798 int
 799 backend_connection_init(
 800         Connection   *conn
 801 )
 802 {
 803         int     i;
 804
 805         for ( i = 0; i < nbackends; i++ ) {
 806                 if ( backends[i].be_connection_init ) {
 807                         (*backends[i].be_connection_init)( &backends[i], conn);
 808                 }
 809         }
 810
 811         return 0;
 812 }
 813
 814 int
 815 backend_connection_destroy(
 816         Connection   *conn
 817 )
 818 {
 819         int     i;
 820
 821         for ( i = 0; i < nbackends; i++ ) {
 822                 if ( backends[i].be_connection_destroy ) {
 823                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 824                 }
 825         }
 826
 827         return 0;
 828 }
 829
 830 static int
 831 backend_check_controls(
 832         Operation *op,
 833         SlapReply *rs )
 834 {
 835         LDAPControl **ctrls = op->o_ctrls;
 836         rs->sr_err = LDAP_SUCCESS;
 837
 838         if( ctrls ) {
 839                 for( ; *ctrls != NULL ; ctrls++ ) {
 840                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 841                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 842                         {
 843                                 rs->sr_text = "control unavailable in context";
 844                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 845                                 break;
 846                         }
 847                 }
 848         }
 849
 850         return rs->sr_err;
 851 }
 852
 853 int
 854 backend_check_restrictions(
 855         Operation *op,
 856         SlapReply *rs,
 857         struct berval *opdata )
 858 {
 859         slap_mask_t restrictops;
 860         slap_mask_t requires;
 861         slap_mask_t opflag;
 862         slap_ssf_set_t *ssf;
 863         int updateop = 0;
 864         int starttls = 0;
 865         int session = 0;
 866
 867         if( op->o_bd ) {
 868                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 869                         return rs->sr_err;
 870                 }
 871
 872                 restrictops = op->o_bd->be_restrictops;
 873                 requires = op->o_bd->be_requires;
 874                 ssf = &op->o_bd->be_ssf_set;
 875
 876         } else {
 877                 restrictops = global_restrictops;
 878                 requires = global_requires;
 879                 ssf = &global_ssf_set;
 880         }
 881
 882         switch( op->o_tag ) {
 883         case LDAP_REQ_ADD:
 884                 opflag = SLAP_RESTRICT_OP_ADD;
 885                 updateop++;
 886                 break;
 887         case LDAP_REQ_BIND:
 888                 opflag = SLAP_RESTRICT_OP_BIND;
 889                 session++;
 890                 break;
 891         case LDAP_REQ_COMPARE:
 892                 opflag = SLAP_RESTRICT_OP_COMPARE;
 893                 break;
 894         case LDAP_REQ_DELETE:
 895                 updateop++;
 896                 opflag = SLAP_RESTRICT_OP_DELETE;
 897                 break;
 898         case LDAP_REQ_EXTENDED:
 899                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 900
 901                 if( !opdata ) {
 902                         /* treat unspecified as a modify */
 903                         opflag = SLAP_RESTRICT_OP_MODIFY;
 904                         updateop++;
 905                         break;
 906                 }
 907
 908                 {
 909                         if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 910                                 session++;
 911                                 starttls++;
 912                                 break;
 913                         }
 914                 }
 915
 916                 {
 917                         if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 918                                 break;
 919                         }
 920                 }
 921
 922 #ifdef LDAP_EXOP_X_CANCEL
 923                 {
 924                         if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 925                                 break;
 926                         }
 927                 }
 928 #endif
 929
 930                 /* treat everything else as a modify */
 931                 opflag = SLAP_RESTRICT_OP_MODIFY;
 932                 updateop++;
 933                 break;
 934
 935         case LDAP_REQ_MODIFY:
 936                 updateop++;
 937                 opflag = SLAP_RESTRICT_OP_MODIFY;
 938                 break;
 939         case LDAP_REQ_RENAME:
 940                 updateop++;
 941                 opflag = SLAP_RESTRICT_OP_RENAME;
 942                 break;
 943         case LDAP_REQ_SEARCH:
 944                 opflag = SLAP_RESTRICT_OP_SEARCH;
 945                 break;
 946         case LDAP_REQ_UNBIND:
 947                 session++;
 948                 opflag = 0;
 949                 break;
 950         default:
 951                 rs->sr_text = "restrict operations internal error";
 952                 rs->sr_err = LDAP_OTHER;
 953                 return rs->sr_err;
 954         }
 955
 956         if ( !starttls ) {
 957                 /* these checks don't apply to StartTLS */
 958
 959                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 960                 if( op->o_transport_ssf < ssf->sss_transport ) {
 961                         rs->sr_text = "transport confidentiality required";
 962                         return rs->sr_err;
 963                 }
 964
 965                 if( op->o_tls_ssf < ssf->sss_tls ) {
 966                         rs->sr_text = "TLS confidentiality required";
 967                         return rs->sr_err;
 968                 }
 969
 970
 971                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 972                         /* simple bind specific check */
 973                         if( op->o_ssf < ssf->sss_simple_bind ) {
 974                                 rs->sr_text = "confidentiality required";
 975                                 return rs->sr_err;
 976                         }
 977                 }
 978
 979                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 980                         /* these checks don't apply to SASL bind */
 981
 982                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 983                                 rs->sr_text = "SASL confidentiality required";
 984                                 return rs->sr_err;
 985                         }
 986
 987                         if( op->o_ssf < ssf->sss_ssf ) {
 988                                 rs->sr_text = "confidentiality required";
 989                                 return rs->sr_err;
 990                         }
 991                 }
 992
 993                 if( updateop ) {
 994                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 995                                 rs->sr_text = "transport update confidentiality required";
 996                                 return rs->sr_err;
 997                         }
 998
 999                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1000                                 rs->sr_text = "TLS update confidentiality required";
1001                                 return rs->sr_err;
1002                         }
1003
1004                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1005                                 rs->sr_text = "SASL update confidentiality required";
1006                                 return rs->sr_err;
1007                         }
1008
1009                         if( op->o_ssf < ssf->sss_update_ssf ) {
1010                                 rs->sr_text = "update confidentiality required";
1011                                 return rs->sr_err;
1012                         }
1013
1014                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1015                                 op->o_ndn.bv_len == 0 )
1016                         {
1017                                 rs->sr_text = "modifications require authentication";
1018                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1019                                 return rs->sr_err;
1020                         }
1021
1022 #ifdef SLAP_X_LISTENER_MOD
1023                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1024                                 /* no "w" mode means readonly */
1025                                 rs->sr_text = "modifications not allowed on this listener";
1026                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1027                                 return rs->sr_err;
1028                         }
1029 #endif /* SLAP_X_LISTENER_MOD */
1030                 }
1031         }
1032
1033         if ( !session ) {
1034                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1035
1036                 if( requires & SLAP_REQUIRE_STRONG ) {
1037                         /* should check mechanism */
1038                         if( ( op->o_transport_ssf < ssf->sss_transport
1039                                 && op->o_authmech.bv_len == 0 ) || op->o_dn.bv_len == 0 )
1040                         {
1041                                 rs->sr_text = "strong authentication required";
1042                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1043                                 return rs->sr_err;
1044                         }
1045                 }
1046
1047                 if( requires & SLAP_REQUIRE_SASL ) {
1048                         if( op->o_authmech.bv_len == 0 || op->o_dn.bv_len == 0 ) {
1049                                 rs->sr_text = "SASL authentication required";
1050                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1051                                 return rs->sr_err;
1052                         }
1053                 }
1054
1055                 if( requires & SLAP_REQUIRE_AUTHC ) {
1056                         if( op->o_dn.bv_len == 0 ) {
1057                                 rs->sr_text = "authentication required";
1058                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1059                                 return rs->sr_err;
1060                         }
1061                 }
1062
1063                 if( requires & SLAP_REQUIRE_BIND ) {
1064                         int version;
1065                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1066                         version = op->o_conn->c_protocol;
1067                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1068
1069                         if( !version ) {
1070                                 /* no bind has occurred */
1071                                 rs->sr_text = "BIND required";
1072                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1073                                 return rs->sr_err;
1074                         }
1075                 }
1076
1077                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1078                         if( op->o_protocol < LDAP_VERSION3 ) {
1079                                 /* no bind has occurred */
1080                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1081                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1082                                 return rs->sr_err;
1083                         }
1084                 }
1085
1086 #ifdef SLAP_X_LISTENER_MOD
1087                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1088                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1089                                 /* no "x" mode means bind required */
1090                                 rs->sr_text = "bind required on this listener";
1091                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1092                                 return rs->sr_err;
1093                         }
1094                 }
1095
1096                 if ( !starttls && !updateop ) {
1097                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1098                                 /* no "r" mode means no read */
1099                                 rs->sr_text = "read not allowed on this listener";
1100                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1101                                 return rs->sr_err;
1102                         }
1103                 }
1104 #endif /* SLAP_X_LISTENER_MOD */
1105
1106         }
1107
1108         if( restrictops & opflag ) {
1109                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1110                         rs->sr_text = "read operations restricted";
1111                 } else {
1112                         rs->sr_text = "operation restricted";
1113                 }
1114                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1115                 return rs->sr_err;
1116         }
1117
1118         rs->sr_err = LDAP_SUCCESS;
1119         return rs->sr_err;
1120 }
1121
1122 int backend_check_referrals( Operation *op, SlapReply *rs )
1123 {
1124         rs->sr_err = LDAP_SUCCESS;
1125
1126         if( op->o_bd->be_chk_referrals ) {
1127                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1128
1129                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1130                         send_ldap_result( op, rs );
1131                 }
1132         }
1133
1134         return rs->sr_err;
1135 }
1136
1137 int
1138 be_entry_get_rw(
1139         Operation *op,
1140         struct berval *ndn,
1141         ObjectClass *oc,
1142         AttributeDescription *at,
1143         int rw,
1144         Entry **e )
1145 {
1146         int rc;
1147
1148         *e = NULL;
1149
1150         if (op->o_bd == NULL) {
1151                 rc = LDAP_NO_SUCH_OBJECT;
1152         } else if ( op->o_bd->be_fetch ) {
1153                 rc = ( op->o_bd->be_fetch )( op, ndn,
1154                         oc, at, rw, e );
1155         } else {
1156                 rc = LDAP_UNWILLING_TO_PERFORM;
1157         }
1158         return rc;
1159 }
1160
1161 int
1162 backend_group(
1163         Operation *op,
1164         Entry   *target,
1165         struct berval *gr_ndn,
1166         struct berval *op_ndn,
1167         ObjectClass *group_oc,
1168         AttributeDescription *group_at
1169 )
1170 {
1171         Entry *e;
1172         Attribute *a;
1173         int rc;
1174         GroupAssertion *g;
1175         Backend *be = op->o_bd;
1176
1177         if ( op->o_abandon ) return SLAPD_ABANDON;
1178
1179         op->o_bd = select_backend( gr_ndn, 0, 0 );
1180
1181         for (g = op->o_groups; g; g=g->ga_next) {
1182                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1183                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1184                         continue;
1185                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1186                         break;
1187         }
1188
1189         if (g) {
1190                 rc = g->ga_res;
1191                 goto done;
1192         }
1193
1194         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1195                 e = target;
1196                 rc = 0;
1197         } else {
1198                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1199         }
1200         if ( e ) {
1201                 a = attr_find( e->e_attrs, group_at );
1202                 if ( a ) {
1203                         /* If the attribute is a subtype of labeledURI, treat this as
1204                          * a dynamic group ala groupOfURLs
1205                          */
1206                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1207                                 int i;
1208                                 LDAPURLDesc *ludp;
1209                                 struct berval bv, nbase;
1210                                 Filter *filter;
1211                                 Entry *user;
1212                                 Backend *b2 = op->o_bd;
1213
1214                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1215                                         user = target;
1216                                 } else {
1217                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1218                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1219                                 }
1220
1221                                 if ( rc == 0 ) {
1222                                         rc = 1;
1223                                         for (i=0; a->a_vals[i].bv_val; i++) {
1224                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1225                                                         continue;
1226                                                 nbase.bv_val = NULL;
1227                                                 /* host part must be empty */
1228                                                 /* attrs and extensions parts must be empty */
1229                                                 if (( ludp->lud_host && *ludp->lud_host )
1230                                                         || ludp->lud_attrs || ludp->lud_exts )
1231                                                         goto loopit;
1232                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1233                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1234                                                         goto loopit;
1235                                                 switch(ludp->lud_scope) {
1236                                                 case LDAP_SCOPE_BASE:
1237                                                         if ( !dn_match(&nbase, op_ndn)) goto loopit;
1238                                                         break;
1239                                                 case LDAP_SCOPE_ONELEVEL:
1240                                                         dnParent(op_ndn, &bv );
1241                                                         if ( !dn_match(&nbase, &bv)) goto loopit;
1242                                                         break;
1243                                                 case LDAP_SCOPE_SUBTREE:
1244                                                         if ( !dnIsSuffix(op_ndn, &nbase)) goto loopit;
1245                                                         break;
1246                                                 }
1247                                                 filter = str2filter_x( op, ludp->lud_filter );
1248                                                 if ( filter ) {
1249                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1250                                                         {
1251                                                                 rc = 0;
1252                                                         }
1253                                                         filter_free_x( op, filter );
1254                                                 }
1255         loopit:
1256                                                 ldap_free_urldesc( ludp );
1257                                                 if ( nbase.bv_val ) {
1258                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1259                                                 }
1260                                                 if ( rc == 0 ) break;
1261                                         }
1262                                         if ( user != target ) {
1263                                                 be_entry_release_r( op, user );
1264                                         }
1265                                 }
1266                                 op->o_bd = b2;
1267                         } else {
1268                                 rc = value_find_ex( group_at,
1269                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1270                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1271                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1272                         }
1273                 } else {
1274                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1275                 }
1276                 if (e != target ) {
1277                         be_entry_release_r( op, e );
1278                 }
1279         } else {
1280                 rc = LDAP_NO_SUCH_OBJECT;
1281         }
1282
1283         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1284                 g = sl_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len, op->o_tmpmemctx);
1285                 g->ga_be = op->o_bd;
1286                 g->ga_oc = group_oc;
1287                 g->ga_at = group_at;
1288                 g->ga_res = rc;
1289                 g->ga_len = gr_ndn->bv_len;
1290                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1291                 g->ga_next = op->o_groups;
1292                 op->o_groups = g;
1293         }
1294 done:
1295         op->o_bd = be;
1296         return rc;
1297 }
1298
1299 int
1300 backend_attribute(
1301         Operation *op,
1302         Entry   *target,
1303         struct berval   *edn,
1304         AttributeDescription *entry_at,
1305         BerVarray *vals
1306 )
1307 {
1308         Entry *e;
1309         Attribute *a;
1310         int i, j, rc = LDAP_SUCCESS;
1311         AccessControlState acl_state = ACL_STATE_INIT;
1312         Backend *be = op->o_bd;
1313
1314         op->o_bd = select_backend( edn, 0, 0 );
1315
1316         if ( target && dn_match( &target->e_nname, edn ) ) {
1317                 e = target;
1318         } else {
1319                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1320         }
1321
1322         if ( e ) {
1323                 a = attr_find( e->e_attrs, entry_at );
1324                 if ( a ) {
1325                         BerVarray v;
1326
1327                         if ( op->o_conn && access_allowed( op,
1328                                 e, entry_at, NULL, ACL_AUTH,
1329                                 &acl_state ) == 0 ) {
1330                                 rc = LDAP_INSUFFICIENT_ACCESS;
1331                                 goto freeit;
1332                         }
1333
1334                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1335
1336                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1337                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1338                                 if ( op->o_conn && access_allowed( op,
1339                                         e, entry_at,
1340                                         &a->a_nvals[i],
1341                                         ACL_AUTH, &acl_state ) == 0 ) {
1342                                         continue;
1343                                 }
1344                                 ber_dupbv_x( &v[j],
1345                                         &a->a_nvals[i], op->o_tmpmemctx );
1346                                 if (v[j].bv_val ) j++;
1347                         }
1348                         if (j == 0) {
1349                                 op->o_tmpfree( v, op->o_tmpmemctx );
1350                                 *vals = NULL;
1351                                 rc = LDAP_INSUFFICIENT_ACCESS;
1352                         } else {
1353                                 v[j].bv_val = NULL;
1354                                 v[j].bv_len = 0;
1355                                 *vals = v;
1356                                 rc = LDAP_SUCCESS;
1357                         }
1358                 }
1359 freeit:         if (e != target ) {
1360                         be_entry_release_r( op, e );
1361                 }
1362         }
1363
1364         op->o_bd = be;
1365         return rc;
1366 }
1367
1368 Attribute *backend_operational(
1369         Operation *op,
1370         SlapReply *rs,
1371         int opattrs     )
1372 {
1373         Attribute *a = NULL, **ap = &a;
1374
1375         /*
1376          * If operational attributes (allegedly) are required,
1377          * and the backend supports specific operational attributes,
1378          * add them to the attribute list
1379          */
1380         if ( opattrs || ( op->ors_attrs &&
1381                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1382                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1383                 ap = &(*ap)->a_next;
1384         }
1385
1386         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1387                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1388         }
1389
1390         return a;
1391 }
1392