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                 if ( backendDB[i].be_update_ndn.bv_val && (
 338                         !backendDB[i].be_update_refs &&
 339                         !backendDB[i].be_syncinfo &&
 340                         !default_referral ) )
 341                 {
 342 #ifdef NEW_LOGGING
 343                         LDAP_LOG( BACKEND, CRIT,
 344                                 "backend_startup: slave \"%s\" updateref missing\n",
 345                                 backendDB[i].be_suffix[0].bv_val, 0, 0 );
 346
 347 #else
 348                         Debug( LDAP_DEBUG_ANY,
 349                                 "backend_startup: slave \"%s\" updateref missing\n",
 350                                 backendDB[i].be_suffix[0].bv_val, 0, 0 );
 351 #endif
 352                         return -1;
 353                 }
 354
 355                 /* append global access controls */
 356                 acl_append( &backendDB[i].be_acl, global_acl );
 357
 358                 LDAP_TAILQ_INIT( &backendDB[i].be_pending_csn_list );
 359
 360                 if ( backendDB[i].bd_info->bi_db_open ) {
 361                         rc = backendDB[i].bd_info->bi_db_open(
 362                                 &backendDB[i] );
 363                         if ( rc != 0 ) {
 364 #ifdef NEW_LOGGING
 365                                 LDAP_LOG( BACKEND, CRIT,
 366                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 367 #else
 368                                 Debug( LDAP_DEBUG_ANY,
 369                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 370                                         i, rc, 0 );
 371 #endif
 372                                 return rc;
 373                         }
 374                 }
 375
 376                 if ( backendDB[i].be_syncinfo != NULL ) {
 377                         syncinfo_t *si = ( syncinfo_t * ) backendDB[i].be_syncinfo;
 378                         si->si_be = &backendDB[i];
 379                         init_syncrepl(si);
 380                         ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 381                         ldap_pvt_runqueue_insert( &syncrepl_rq, si->si_interval,
 382                                 do_syncrepl, (void *) backendDB[i].be_syncinfo );
 383                         ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 384                 }
 385         }
 386
 387         return rc;
 388 }
 389
 390 int backend_num( Backend *be )
 391 {
 392         int i;
 393
 394         if( be == NULL ) return -1;
 395
 396         for( i = 0; i < nBackendDB; i++ ) {
 397                 if( be == &backendDB[i] ) return i;
 398         }
 399         return -1;
 400 }
 401
 402 int backend_shutdown( Backend *be )
 403 {
 404         int i;
 405         int rc = 0;
 406
 407         if( be != NULL ) {
 408                 /* shutdown a specific backend database */
 409
 410                 if ( be->bd_info->bi_nDB == 0 ) {
 411                         /* no database of this type, we never opened it */
 412                         return 0;
 413                 }
 414
 415                 if ( be->bd_info->bi_db_close ) {
 416                         be->bd_info->bi_db_close( be );
 417                 }
 418
 419                 if( be->bd_info->bi_close ) {
 420                         be->bd_info->bi_close( be->bd_info );
 421                 }
 422
 423                 return 0;
 424         }
 425
 426         /* close each backend database */
 427         for( i = 0; i < nBackendDB; i++ ) {
 428                 if ( backendDB[i].bd_info->bi_db_close ) {
 429                         backendDB[i].bd_info->bi_db_close(
 430                                 &backendDB[i] );
 431                 }
 432
 433                 if(rc != 0) {
 434 #ifdef NEW_LOGGING
 435                         LDAP_LOG( BACKEND, NOTICE,
 436                                 "backend_shutdown: bi_close %s failed!\n",
 437                                 backendDB[i].be_type, 0, 0 );
 438 #else
 439                         Debug( LDAP_DEBUG_ANY,
 440                                 "backend_close: bi_close %s failed!\n",
 441                                 backendDB[i].be_type, 0, 0 );
 442 #endif
 443                 }
 444         }
 445
 446         /* close each backend type */
 447         for( i = 0; i < nBackendInfo; i++ ) {
 448                 if( backendInfo[i].bi_nDB == 0 ) {
 449                         /* no database of this type */
 450                         continue;
 451                 }
 452
 453                 if( backendInfo[i].bi_close ) {
 454                         backendInfo[i].bi_close(
 455                                 &backendInfo[i] );
 456                 }
 457         }
 458
 459         return 0;
 460 }
 461
 462 int backend_destroy(void)
 463 {
 464         int i;
 465         BackendDB *bd;
 466
 467         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 468
 469         /* destroy each backend database */
 470         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 471                 if ( bd->bd_info->bi_db_destroy ) {
 472                         bd->bd_info->bi_db_destroy( bd );
 473                 }
 474                 ber_bvarray_free( bd->be_suffix );
 475                 ber_bvarray_free( bd->be_nsuffix );
 476                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 477                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 478                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 479                 acl_destroy( bd->be_acl, global_acl );
 480         }
 481         free( backendDB );
 482
 483         /* destroy each backend type */
 484         for( i = 0; i < nBackendInfo; i++ ) {
 485                 if( backendInfo[i].bi_destroy ) {
 486                         backendInfo[i].bi_destroy(
 487                                 &backendInfo[i] );
 488                 }
 489         }
 490
 491 #ifdef SLAPD_MODULES
 492         if (backendInfo != binfo) {
 493            free(backendInfo);
 494         }
 495 #endif /* SLAPD_MODULES */
 496
 497         nBackendInfo = 0;
 498         backendInfo = NULL;
 499
 500         return 0;
 501 }
 502
 503 BackendInfo* backend_info(const char *type)
 504 {
 505         int i;
 506
 507         /* search for the backend type */
 508         for( i = 0; i < nBackendInfo; i++ ) {
 509                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 510                         return &backendInfo[i];
 511                 }
 512         }
 513
 514         return NULL;
 515 }
 516
 517
 518 BackendDB *
 519 backend_db_init(
 520     const char  *type
 521 )
 522 {
 523         Backend *be;
 524         BackendInfo *bi = backend_info(type);
 525         int     rc = 0;
 526
 527         if( bi == NULL ) {
 528                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 529                 return NULL;
 530         }
 531
 532         backendDB = (BackendDB *) ch_realloc(
 533                         (char *) backendDB,
 534                     (nBackendDB + 1) * sizeof(Backend) );
 535
 536         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 537
 538         be = &backends[nbackends++];
 539
 540         be->bd_info = bi;
 541         be->be_def_limit = deflimit;
 542         be->be_dfltaccess = global_default_access;
 543
 544         be->be_restrictops = global_restrictops;
 545         be->be_requires = global_requires;
 546         be->be_ssf_set = global_ssf_set;
 547
 548         be->be_context_csn.bv_len = 0;
 549         be->be_context_csn.bv_val = NULL;
 550         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 551         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 552
 553         be->be_syncinfo = NULL;
 554
 555         /* assign a default depth limit for alias deref */
 556         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 557
 558         if(bi->bi_db_init) {
 559                 rc = bi->bi_db_init( be );
 560         }
 561
 562         if(rc != 0) {
 563                 fprintf( stderr, "database init failed (%s)\n", type );
 564                 nbackends--;
 565                 return NULL;
 566         }
 567
 568         bi->bi_nDB++;
 569         return( be );
 570 }
 571
 572 void
 573 be_db_close( void )
 574 {
 575         int     i;
 576
 577         for ( i = 0; i < nbackends; i++ ) {
 578                 if ( backends[i].bd_info->bi_db_close ) {
 579                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 580                 }
 581         }
 582 }
 583
 584 Backend *
 585 select_backend(
 586         struct berval * dn,
 587         int manageDSAit,
 588         int noSubs )
 589 {
 590         int     i, j;
 591         ber_len_t len, dnlen = dn->bv_len;
 592         Backend *be = NULL;
 593
 594         for ( i = 0; i < nbackends; i++ ) {
 595                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 596                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 597                 {
 598                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 599                                 && noSubs )
 600                         {
 601                                 continue;
 602                         }
 603
 604                         len = backends[i].be_nsuffix[j].bv_len;
 605
 606                         if ( len > dnlen ) {
 607                                 /* suffix is longer than DN */
 608                                 continue;
 609                         }
 610
 611                         /*
 612                          * input DN is normalized, so the separator check
 613                          * need not look at escaping
 614                          */
 615                         if ( len && len < dnlen &&
 616                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 617                         {
 618                                 continue;
 619                         }
 620
 621                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 622                                 &dn->bv_val[dnlen-len] ) == 0 )
 623                         {
 624                                 if( be == NULL ) {
 625                                         be = &backends[i];
 626
 627                                         if( manageDSAit && len == dnlen &&
 628                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 629                                                 continue;
 630                                         }
 631                                 } else {
 632                                         be = &backends[i];
 633                                 }
 634                                 return be;
 635                         }
 636                 }
 637         }
 638
 639         return be;
 640 }
 641
 642 int
 643 be_issuffix(
 644     Backend     *be,
 645     struct berval       *bvsuffix
 646 )
 647 {
 648         int     i;
 649
 650         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 651                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 652                         return( 1 );
 653                 }
 654         }
 655
 656         return( 0 );
 657 }
 658
 659 int
 660 be_isroot( Backend *be, struct berval *ndn )
 661 {
 662         if ( !ndn->bv_len ) {
 663                 return( 0 );
 664         }
 665
 666         if ( !be->be_rootndn.bv_len ) {
 667                 return( 0 );
 668         }
 669
 670         return dn_match( &be->be_rootndn, ndn );
 671 }
 672
 673 int
 674 be_isupdate( Backend *be, struct berval *ndn )
 675 {
 676         if ( !ndn->bv_len ) {
 677                 return( 0 );
 678         }
 679
 680         if ( !be->be_update_ndn.bv_len ) {
 681                 return( 0 );
 682         }
 683
 684         return dn_match( &be->be_update_ndn, ndn );
 685 }
 686
 687 struct berval *
 688 be_root_dn( Backend *be )
 689 {
 690         return &be->be_rootdn;
 691 }
 692
 693 int
 694 be_isroot_pw( Operation *op )
 695 {
 696         int result;
 697         char *errmsg;
 698
 699         if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
 700                 return 0;
 701         }
 702
 703         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 704                 return 0;
 705         }
 706
 707 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 708         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 709 #ifdef SLAPD_SPASSWD
 710         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 711 #endif
 712 #endif
 713
 714         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 715
 716 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 717 #ifdef SLAPD_SPASSWD
 718         lutil_passwd_sasl_conn = NULL;
 719 #endif
 720         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 721 #endif
 722
 723         return result == 0;
 724 }
 725
 726 int
 727 be_entry_release_rw(
 728         Operation *op,
 729         Entry *e,
 730         int rw )
 731 {
 732         if ( op->o_bd->be_release ) {
 733                 /* free and release entry from backend */
 734                 return op->o_bd->be_release( op, e, rw );
 735         } else {
 736                 /* free entry */
 737                 entry_free( e );
 738                 return 0;
 739         }
 740 }
 741
 742 int
 743 backend_unbind( Operation *op, SlapReply *rs )
 744 {
 745         int             i;
 746 #if defined( LDAP_SLAPI )
 747         Slapi_PBlock *pb = op->o_pb;
 748
 749         int     rc;
 750         slapi_x_pblock_set_operation( pb, op );
 751 #endif /* defined( LDAP_SLAPI ) */
 752
 753         for ( i = 0; i < nbackends; i++ ) {
 754 #if defined( LDAP_SLAPI )
 755                 slapi_pblock_set( pb, SLAPI_BACKEND, (void *)&backends[i] );
 756                 rc = doPluginFNs( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 757                                 (Slapi_PBlock *)pb );
 758                 if ( rc < 0 ) {
 759                         /*
 760                          * A preoperation plugin failure will abort the
 761                          * entire operation.
 762                          */
 763 #ifdef NEW_LOGGING
 764                         LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 765                                         "failed\n", 0, 0, 0);
 766 #else
 767                         Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 768                                         "failed.\n", 0, 0, 0);
 769 #endif
 770                         return 0;
 771                 }
 772 #endif /* defined( LDAP_SLAPI ) */
 773
 774                 if ( backends[i].be_unbind ) {
 775                         op->o_bd = &backends[i];
 776                         (*backends[i].be_unbind)( op, rs );
 777                 }
 778
 779 #if defined( LDAP_SLAPI )
 780                 if ( doPluginFNs( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 781                                 (Slapi_PBlock *)pb ) < 0 ) {
 782 #ifdef NEW_LOGGING
 783                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 784                                         "failed\n", 0, 0, 0);
 785 #else
 786                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 787                                         "failed.\n", 0, 0, 0);
 788 #endif
 789                 }
 790 #endif /* defined( LDAP_SLAPI ) */
 791         }
 792
 793         return 0;
 794 }
 795
 796 int
 797 backend_connection_init(
 798         Connection   *conn
 799 )
 800 {
 801         int     i;
 802
 803         for ( i = 0; i < nbackends; i++ ) {
 804                 if ( backends[i].be_connection_init ) {
 805                         (*backends[i].be_connection_init)( &backends[i], conn);
 806                 }
 807         }
 808
 809         return 0;
 810 }
 811
 812 int
 813 backend_connection_destroy(
 814         Connection   *conn
 815 )
 816 {
 817         int     i;
 818
 819         for ( i = 0; i < nbackends; i++ ) {
 820                 if ( backends[i].be_connection_destroy ) {
 821                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 822                 }
 823         }
 824
 825         return 0;
 826 }
 827
 828 static int
 829 backend_check_controls(
 830         Operation *op,
 831         SlapReply *rs )
 832 {
 833         LDAPControl **ctrls = op->o_ctrls;
 834         rs->sr_err = LDAP_SUCCESS;
 835
 836         if( ctrls ) {
 837                 for( ; *ctrls != NULL ; ctrls++ ) {
 838                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 839                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 840                         {
 841                                 rs->sr_text = "control unavailable in context";
 842                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 843                                 break;
 844                         }
 845                 }
 846         }
 847
 848         return rs->sr_err;
 849 }
 850
 851 int
 852 backend_check_restrictions(
 853         Operation *op,
 854         SlapReply *rs,
 855         struct berval *opdata )
 856 {
 857         slap_mask_t restrictops;
 858         slap_mask_t requires;
 859         slap_mask_t opflag;
 860         slap_ssf_set_t *ssf;
 861         int updateop = 0;
 862         int starttls = 0;
 863         int session = 0;
 864
 865         if( op->o_bd ) {
 866                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 867                         return rs->sr_err;
 868                 }
 869
 870                 restrictops = op->o_bd->be_restrictops;
 871                 requires = op->o_bd->be_requires;
 872                 ssf = &op->o_bd->be_ssf_set;
 873
 874         } else {
 875                 restrictops = global_restrictops;
 876                 requires = global_requires;
 877                 ssf = &global_ssf_set;
 878         }
 879
 880         switch( op->o_tag ) {
 881         case LDAP_REQ_ADD:
 882                 opflag = SLAP_RESTRICT_OP_ADD;
 883                 updateop++;
 884                 break;
 885         case LDAP_REQ_BIND:
 886                 opflag = SLAP_RESTRICT_OP_BIND;
 887                 session++;
 888                 break;
 889         case LDAP_REQ_COMPARE:
 890                 opflag = SLAP_RESTRICT_OP_COMPARE;
 891                 break;
 892         case LDAP_REQ_DELETE:
 893                 updateop++;
 894                 opflag = SLAP_RESTRICT_OP_DELETE;
 895                 break;
 896         case LDAP_REQ_EXTENDED:
 897                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 898
 899                 if( !opdata ) {
 900                         /* treat unspecified as a modify */
 901                         opflag = SLAP_RESTRICT_OP_MODIFY;
 902                         updateop++;
 903                         break;
 904                 }
 905
 906                 {
 907                         if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 908                                 session++;
 909                                 starttls++;
 910                                 break;
 911                         }
 912                 }
 913
 914                 {
 915                         if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 916                                 break;
 917                         }
 918                 }
 919
 920 #ifdef LDAP_EXOP_X_CANCEL
 921                 {
 922                         if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 923                                 break;
 924                         }
 925                 }
 926 #endif
 927
 928                 /* treat everything else as a modify */
 929                 opflag = SLAP_RESTRICT_OP_MODIFY;
 930                 updateop++;
 931                 break;
 932
 933         case LDAP_REQ_MODIFY:
 934                 updateop++;
 935                 opflag = SLAP_RESTRICT_OP_MODIFY;
 936                 break;
 937         case LDAP_REQ_RENAME:
 938                 updateop++;
 939                 opflag = SLAP_RESTRICT_OP_RENAME;
 940                 break;
 941         case LDAP_REQ_SEARCH:
 942                 opflag = SLAP_RESTRICT_OP_SEARCH;
 943                 break;
 944         case LDAP_REQ_UNBIND:
 945                 session++;
 946                 opflag = 0;
 947                 break;
 948         default:
 949                 rs->sr_text = "restrict operations internal error";
 950                 rs->sr_err = LDAP_OTHER;
 951                 return rs->sr_err;
 952         }
 953
 954         if ( !starttls ) {
 955                 /* these checks don't apply to StartTLS */
 956
 957                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 958                 if( op->o_transport_ssf < ssf->sss_transport ) {
 959                         rs->sr_text = "transport confidentiality required";
 960                         return rs->sr_err;
 961                 }
 962
 963                 if( op->o_tls_ssf < ssf->sss_tls ) {
 964                         rs->sr_text = "TLS confidentiality required";
 965                         return rs->sr_err;
 966                 }
 967
 968
 969                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 970                         /* simple bind specific check */
 971                         if( op->o_ssf < ssf->sss_simple_bind ) {
 972                                 rs->sr_text = "confidentiality required";
 973                                 return rs->sr_err;
 974                         }
 975                 }
 976
 977                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 978                         /* these checks don't apply to SASL bind */
 979
 980                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 981                                 rs->sr_text = "SASL confidentiality required";
 982                                 return rs->sr_err;
 983                         }
 984
 985                         if( op->o_ssf < ssf->sss_ssf ) {
 986                                 rs->sr_text = "confidentiality required";
 987                                 return rs->sr_err;
 988                         }
 989                 }
 990
 991                 if( updateop ) {
 992                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 993                                 rs->sr_text = "transport update confidentiality required";
 994                                 return rs->sr_err;
 995                         }
 996
 997                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
 998                                 rs->sr_text = "TLS update confidentiality required";
 999                                 return rs->sr_err;
1000                         }
1001
1002                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1003                                 rs->sr_text = "SASL update confidentiality required";
1004                                 return rs->sr_err;
1005                         }
1006
1007                         if( op->o_ssf < ssf->sss_update_ssf ) {
1008                                 rs->sr_text = "update confidentiality required";
1009                                 return rs->sr_err;
1010                         }
1011
1012                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1013                                 op->o_ndn.bv_len == 0 )
1014                         {
1015                                 rs->sr_text = "modifications require authentication";
1016                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1017                                 return rs->sr_err;
1018                         }
1019
1020 #ifdef SLAP_X_LISTENER_MOD
1021                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1022                                 /* no "w" mode means readonly */
1023                                 rs->sr_text = "modifications not allowed on this listener";
1024                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1025                                 return rs->sr_err;
1026                         }
1027 #endif /* SLAP_X_LISTENER_MOD */
1028                 }
1029         }
1030
1031         if ( !session ) {
1032                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1033
1034                 if( requires & SLAP_REQUIRE_STRONG ) {
1035                         /* should check mechanism */
1036                         if( ( op->o_transport_ssf < ssf->sss_transport
1037                                 && op->o_authmech.bv_len == 0 ) || op->o_dn.bv_len == 0 )
1038                         {
1039                                 rs->sr_text = "strong authentication required";
1040                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1041                                 return rs->sr_err;
1042                         }
1043                 }
1044
1045                 if( requires & SLAP_REQUIRE_SASL ) {
1046                         if( op->o_authmech.bv_len == 0 || op->o_dn.bv_len == 0 ) {
1047                                 rs->sr_text = "SASL authentication required";
1048                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1049                                 return rs->sr_err;
1050                         }
1051                 }
1052
1053                 if( requires & SLAP_REQUIRE_AUTHC ) {
1054                         if( op->o_dn.bv_len == 0 ) {
1055                                 rs->sr_text = "authentication required";
1056                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1057                                 return rs->sr_err;
1058                         }
1059                 }
1060
1061                 if( requires & SLAP_REQUIRE_BIND ) {
1062                         int version;
1063                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1064                         version = op->o_conn->c_protocol;
1065                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1066
1067                         if( !version ) {
1068                                 /* no bind has occurred */
1069                                 rs->sr_text = "BIND required";
1070                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1071                                 return rs->sr_err;
1072                         }
1073                 }
1074
1075                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1076                         if( op->o_protocol < LDAP_VERSION3 ) {
1077                                 /* no bind has occurred */
1078                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1079                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1080                                 return rs->sr_err;
1081                         }
1082                 }
1083
1084 #ifdef SLAP_X_LISTENER_MOD
1085                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1086                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1087                                 /* no "x" mode means bind required */
1088                                 rs->sr_text = "bind required on this listener";
1089                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1090                                 return rs->sr_err;
1091                         }
1092                 }
1093
1094                 if ( !starttls && !updateop ) {
1095                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1096                                 /* no "r" mode means no read */
1097                                 rs->sr_text = "read not allowed on this listener";
1098                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1099                                 return rs->sr_err;
1100                         }
1101                 }
1102 #endif /* SLAP_X_LISTENER_MOD */
1103
1104         }
1105
1106         if( restrictops & opflag ) {
1107                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1108                         rs->sr_text = "read operations restricted";
1109                 } else {
1110                         rs->sr_text = "operation restricted";
1111                 }
1112                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1113                 return rs->sr_err;
1114         }
1115
1116         rs->sr_err = LDAP_SUCCESS;
1117         return rs->sr_err;
1118 }
1119
1120 int backend_check_referrals( Operation *op, SlapReply *rs )
1121 {
1122         rs->sr_err = LDAP_SUCCESS;
1123
1124         if( op->o_bd->be_chk_referrals ) {
1125                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1126
1127                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1128                         send_ldap_result( op, rs );
1129                 }
1130         }
1131
1132         return rs->sr_err;
1133 }
1134
1135 int
1136 be_entry_get_rw(
1137         Operation *op,
1138         struct berval *ndn,
1139         ObjectClass *oc,
1140         AttributeDescription *at,
1141         int rw,
1142         Entry **e )
1143 {
1144         int rc;
1145
1146         *e = NULL;
1147
1148         if (op->o_bd == NULL) {
1149                 rc = LDAP_NO_SUCH_OBJECT;
1150         } else if ( op->o_bd->be_fetch ) {
1151                 rc = ( op->o_bd->be_fetch )( op, ndn,
1152                         oc, at, rw, e );
1153         } else {
1154                 rc = LDAP_UNWILLING_TO_PERFORM;
1155         }
1156         return rc;
1157 }
1158
1159 int
1160 backend_group(
1161         Operation *op,
1162         Entry   *target,
1163         struct berval *gr_ndn,
1164         struct berval *op_ndn,
1165         ObjectClass *group_oc,
1166         AttributeDescription *group_at
1167 )
1168 {
1169         Entry *e;
1170         Attribute *a;
1171         int rc;
1172         GroupAssertion *g;
1173         Backend *be = op->o_bd;
1174
1175         if ( op->o_abandon ) return SLAPD_ABANDON;
1176
1177         op->o_bd = select_backend( gr_ndn, 0, 0 );
1178
1179         for (g = op->o_groups; g; g=g->ga_next) {
1180                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1181                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1182                         continue;
1183                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1184                         break;
1185         }
1186
1187         if (g) {
1188                 rc = g->ga_res;
1189                 goto done;
1190         }
1191
1192         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1193                 e = target;
1194                 rc = 0;
1195         } else {
1196                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1197         }
1198         if ( e ) {
1199                 a = attr_find( e->e_attrs, group_at );
1200                 if ( a ) {
1201                         /* If the attribute is a subtype of labeledURI, treat this as
1202                          * a dynamic group ala groupOfURLs
1203                          */
1204                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1205                                 int i;
1206                                 LDAPURLDesc *ludp;
1207                                 struct berval bv, nbase;
1208                                 Filter *filter;
1209                                 Entry *user;
1210                                 Backend *b2 = op->o_bd;
1211
1212                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1213                                         user = target;
1214                                 } else {
1215                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1216                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1217                                 }
1218
1219                                 if ( rc == 0 ) {
1220                                         rc = 1;
1221                                         for (i=0; a->a_vals[i].bv_val; i++) {
1222                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1223                                                         continue;
1224                                                 nbase.bv_val = NULL;
1225                                                 /* host part must be empty */
1226                                                 /* attrs and extensions parts must be empty */
1227                                                 if (( ludp->lud_host && *ludp->lud_host )
1228                                                         || ludp->lud_attrs || ludp->lud_exts )
1229                                                         goto loopit;
1230                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1231                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1232                                                         goto loopit;
1233                                                 switch(ludp->lud_scope) {
1234                                                 case LDAP_SCOPE_BASE:
1235                                                         if ( !dn_match(&nbase, op_ndn)) goto loopit;
1236                                                         break;
1237                                                 case LDAP_SCOPE_ONELEVEL:
1238                                                         dnParent(op_ndn, &bv );
1239                                                         if ( !dn_match(&nbase, &bv)) goto loopit;
1240                                                         break;
1241                                                 case LDAP_SCOPE_SUBTREE:
1242                                                         if ( !dnIsSuffix(op_ndn, &nbase)) goto loopit;
1243                                                         break;
1244                                                 }
1245                                                 filter = str2filter_x( op, ludp->lud_filter );
1246                                                 if ( filter ) {
1247                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1248                                                         {
1249                                                                 rc = 0;
1250                                                         }
1251                                                         filter_free_x( op, filter );
1252                                                 }
1253         loopit:
1254                                                 ldap_free_urldesc( ludp );
1255                                                 if ( nbase.bv_val ) {
1256                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1257                                                 }
1258                                                 if ( rc == 0 ) break;
1259                                         }
1260                                         if ( user != target ) {
1261                                                 be_entry_release_r( op, user );
1262                                         }
1263                                 }
1264                                 op->o_bd = b2;
1265                         } else {
1266                                 rc = value_find_ex( group_at,
1267                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1268                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1269                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1270                         }
1271                 } else {
1272                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1273                 }
1274                 if (e != target ) {
1275                         be_entry_release_r( op, e );
1276                 }
1277         } else {
1278                 rc = LDAP_NO_SUCH_OBJECT;
1279         }
1280
1281         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1282                 g = sl_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len, op->o_tmpmemctx);
1283                 g->ga_be = op->o_bd;
1284                 g->ga_oc = group_oc;
1285                 g->ga_at = group_at;
1286                 g->ga_res = rc;
1287                 g->ga_len = gr_ndn->bv_len;
1288                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1289                 g->ga_next = op->o_groups;
1290                 op->o_groups = g;
1291         }
1292 done:
1293         op->o_bd = be;
1294         return rc;
1295 }
1296
1297 int
1298 backend_attribute(
1299         Operation *op,
1300         Entry   *target,
1301         struct berval   *edn,
1302         AttributeDescription *entry_at,
1303         BerVarray *vals
1304 )
1305 {
1306         Entry *e;
1307         Attribute *a;
1308         int i, j, rc = LDAP_SUCCESS;
1309         AccessControlState acl_state = ACL_STATE_INIT;
1310         Backend *be = op->o_bd;
1311
1312         op->o_bd = select_backend( edn, 0, 0 );
1313
1314         if ( target && dn_match( &target->e_nname, edn ) ) {
1315                 e = target;
1316         } else {
1317                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1318         }
1319
1320         if ( e ) {
1321                 a = attr_find( e->e_attrs, entry_at );
1322                 if ( a ) {
1323                         BerVarray v;
1324
1325                         if ( op->o_conn && access_allowed( op,
1326                                 e, entry_at, NULL, ACL_AUTH,
1327                                 &acl_state ) == 0 ) {
1328                                 rc = LDAP_INSUFFICIENT_ACCESS;
1329                                 goto freeit;
1330                         }
1331
1332                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1333
1334                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1335                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1336                                 if ( op->o_conn && access_allowed( op,
1337                                         e, entry_at,
1338                                         &a->a_nvals[i],
1339                                         ACL_AUTH, &acl_state ) == 0 ) {
1340                                         continue;
1341                                 }
1342                                 ber_dupbv_x( &v[j],
1343                                         &a->a_nvals[i], op->o_tmpmemctx );
1344                                 if (v[j].bv_val ) j++;
1345                         }
1346                         if (j == 0) {
1347                                 op->o_tmpfree( v, op->o_tmpmemctx );
1348                                 *vals = NULL;
1349                                 rc = LDAP_INSUFFICIENT_ACCESS;
1350                         } else {
1351                                 v[j].bv_val = NULL;
1352                                 v[j].bv_len = 0;
1353                                 *vals = v;
1354                                 rc = LDAP_SUCCESS;
1355                         }
1356                 }
1357 freeit:         if (e != target ) {
1358                         be_entry_release_r( op, e );
1359                 }
1360         }
1361
1362         op->o_bd = be;
1363         return rc;
1364 }
1365
1366 Attribute *backend_operational(
1367         Operation *op,
1368         SlapReply *rs,
1369         int opattrs     )
1370 {
1371         Attribute *a = NULL, **ap = &a;
1372
1373         /*
1374          * If operational attributes (allegedly) are required,
1375          * and the backend supports specific operational attributes,
1376          * add them to the attribute list
1377          */
1378         if ( opattrs || ( op->ors_attrs &&
1379                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1380                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1381                 ap = &(*ap)->a_next;
1382         }
1383
1384         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1385                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1386         }
1387
1388         return a;
1389 }
1390