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

   1 /* backend.c - routines for dealing with back-end databases */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2003 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31
  32 #include <ac/string.h>
  33 #include <ac/socket.h>
  34 #include <sys/stat.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38 #include "lber_pvt.h"
  39
  40 #include "ldap_rq.h"
  41
  42 #ifdef LDAP_SLAPI
  43 #include "slapi.h"
  44 #endif
  45
  46 /*
  47  * If a module is configured as dynamic, its header should not
  48  * get included into slapd. While this is a general rule and does
  49  * not have much of an effect in UNIX, this rule should be adhered
  50  * to for Windows, where dynamic object code should not be implicitly
  51  * imported into slapd without appropriate __declspec(dllimport) directives.
  52  */
  53
  54 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  55 #include "back-bdb/external.h"
  56 #endif
  57 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  58 #include "back-dnssrv/external.h"
  59 #endif
  60 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  61 #include "back-hdb/external.h"
  62 #endif
  63 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  64 #include "back-ldap/external.h"
  65 #endif
  66 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  67 #include "back-ldbm/external.h"
  68 #endif
  69 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  70 #include "back-meta/external.h"
  71 #endif
  72 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  73 #include "back-monitor/external.h"
  74 #endif
  75 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
  76 #include "back-null/external.h"
  77 #endif
  78 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  79 #include "back-passwd/external.h"
  80 #endif
  81 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  82 #include "back-perl/external.h"
  83 #endif
  84 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  85 #include "back-shell/external.h"
  86 #endif
  87 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  88 #include "back-tcl/external.h"
  89 #endif
  90 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  91 #include "back-sql/external.h"
  92 #endif
  93 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
  94 #include "private/external.h"
  95 #endif
  96
  97 static BackendInfo binfo[] = {
  98 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  99         {"bdb", bdb_initialize},
 100 #endif
 101 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
 102         {"dnssrv",      dnssrv_back_initialize},
 103 #endif
 104 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
 105         {"hdb", hdb_initialize},
 106 #endif
 107 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
 108         {"ldap",        ldap_back_initialize},
 109 #endif
 110 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
 111         {"ldbm",        ldbm_back_initialize},
 112 #endif
 113 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
 114         {"meta",        meta_back_initialize},
 115 #endif
 116 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
 117         {"monitor",     monitor_back_initialize},
 118 #endif
 119 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
 120         {"null",        null_back_initialize},
 121 #endif
 122 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 123         {"passwd",      passwd_back_initialize},
 124 #endif
 125 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 126         {"perl",        perl_back_initialize},
 127 #endif
 128 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 129         {"shell",       shell_back_initialize},
 130 #endif
 131 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 132         {"tcl",         tcl_back_initialize},
 133 #endif
 134 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
 135         {"sql",         sql_back_initialize},
 136 #endif
 137         /* for any private backend */
 138 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
 139         {"private",     private_back_initialize},
 140 #endif
 141         {NULL}
 142 };
 143
 144 int                     nBackendInfo = 0;
 145 BackendInfo     *backendInfo = NULL;
 146
 147 int                     nBackendDB = 0;
 148 BackendDB       *backendDB = NULL;
 149
 150 ldap_pvt_thread_pool_t  syncrepl_pool;
 151 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 152
 153 int backend_init(void)
 154 {
 155         int rc = -1;
 156
 157         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 158
 159         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 160                 /* already initialized */
 161 #ifdef NEW_LOGGING
 162                 LDAP_LOG( BACKEND, ERR,
 163                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 164 #else
 165                 Debug( LDAP_DEBUG_ANY,
 166                         "backend_init: already initialized.\n", 0, 0, 0 );
 167 #endif
 168                 return -1;
 169         }
 170
 171         for( ;
 172                 binfo[nBackendInfo].bi_type != NULL;
 173                 nBackendInfo++ )
 174         {
 175                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 176
 177                 if(rc != 0) {
 178 #ifdef NEW_LOGGING
 179                         LDAP_LOG( BACKEND, INFO,
 180                                 "backend_init:  initialized for type \"%s\"\n",
 181                                 binfo[nBackendInfo].bi_type, 0, 0 );
 182 #else
 183                         Debug( LDAP_DEBUG_ANY,
 184                                 "backend_init: initialized for type \"%s\"\n",
 185                                 binfo[nBackendInfo].bi_type, 0, 0 );
 186 #endif
 187                         /* destroy those we've already inited */
 188                         for( nBackendInfo--;
 189                                 nBackendInfo >= 0 ;
 190                                 nBackendInfo-- )
 191                         {
 192                                 if ( binfo[nBackendInfo].bi_destroy ) {
 193                                         binfo[nBackendInfo].bi_destroy(
 194                                                 &binfo[nBackendInfo] );
 195                                 }
 196                         }
 197                         return rc;
 198                 }
 199         }
 200
 201         if ( nBackendInfo > 0) {
 202                 backendInfo = binfo;
 203                 return 0;
 204         }
 205
 206 #ifdef SLAPD_MODULES
 207         return 0;
 208 #else
 209
 210 #ifdef NEW_LOGGING
 211         LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
 212 #else
 213         Debug( LDAP_DEBUG_ANY,
 214                 "backend_init: failed\n",
 215                 0, 0, 0 );
 216 #endif
 217
 218         return rc;
 219 #endif /* SLAPD_MODULES */
 220 }
 221
 222 int backend_add(BackendInfo *aBackendInfo)
 223 {
 224    int rc = 0;
 225
 226    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 227 #ifdef NEW_LOGGING
 228         LDAP_LOG( BACKEND, ERR,
 229                   "backend_add:  initialization for type \"%s\" failed\n",
 230                   aBackendInfo->bi_type, 0, 0 );
 231 #else
 232       Debug( LDAP_DEBUG_ANY,
 233              "backend_add: initialization for type \"%s\" failed\n",
 234              aBackendInfo->bi_type, 0, 0 );
 235 #endif
 236       return rc;
 237    }
 238
 239    /* now add the backend type to the Backend Info List */
 240    {
 241       BackendInfo *newBackendInfo = 0;
 242
 243       /* if backendInfo == binfo no deallocation of old backendInfo */
 244       if (backendInfo == binfo) {
 245          newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 246          AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
 247                 nBackendInfo);
 248       } else {
 249          newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
 250                                      (nBackendInfo + 1));
 251       }
 252       AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 253              sizeof(BackendInfo));
 254       backendInfo = newBackendInfo;
 255       nBackendInfo++;
 256
 257       return 0;
 258    }
 259 }
 260
 261 int backend_startup(Backend *be)
 262 {
 263         int i;
 264         int rc = 0;
 265
 266         if( ! ( nBackendDB > 0 ) ) {
 267                 /* no databases */
 268 #ifdef NEW_LOGGING
 269                 LDAP_LOG( BACKEND, INFO,
 270                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 271 #else
 272                 Debug( LDAP_DEBUG_ANY,
 273                         "backend_startup: %d databases to startup.\n",
 274                         nBackendDB, 0, 0 );
 275 #endif
 276                 return 1;
 277         }
 278
 279         if(be != NULL) {
 280                 /* startup a specific backend database */
 281
 282                 LDAP_TAILQ_INIT( &be->be_pending_csn_list );
 283
 284 #ifdef NEW_LOGGING
 285                 LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 286                            be->be_suffix[0].bv_val, 0, 0 );
 287 #else
 288                 Debug( LDAP_DEBUG_TRACE,
 289                         "backend_startup: starting \"%s\"\n",
 290                         be->be_suffix[0].bv_val, 0, 0 );
 291 #endif
 292
 293                 if ( be->bd_info->bi_open ) {
 294                         rc = be->bd_info->bi_open( be->bd_info );
 295                         if ( rc != 0 ) {
 296 #ifdef NEW_LOGGING
 297                                 LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
 298 #else
 299                                 Debug( LDAP_DEBUG_ANY,
 300                                         "backend_startup: bi_open failed!\n",
 301                                         0, 0, 0 );
 302 #endif
 303
 304                                 return rc;
 305                         }
 306                 }
 307
 308                 if ( be->bd_info->bi_db_open ) {
 309                         rc = be->bd_info->bi_db_open( be );
 310                         if ( rc != 0 ) {
 311 #ifdef NEW_LOGGING
 312                                 LDAP_LOG( BACKEND, CRIT,
 313                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 314 #else
 315                                 Debug( LDAP_DEBUG_ANY,
 316                                         "backend_startup: bi_db_open failed! (%d)\n",
 317                                         rc, 0, 0 );
 318 #endif
 319                                 return rc;
 320                         }
 321                 }
 322
 323                 return rc;
 324         }
 325
 326         /* open each backend type */
 327         for( i = 0; i < nBackendInfo; i++ ) {
 328                 if( backendInfo[i].bi_nDB == 0) {
 329                         /* no database of this type, don't open */
 330                         continue;
 331                 }
 332
 333                 if( backendInfo[i].bi_open ) {
 334                         rc = backendInfo[i].bi_open(
 335                                 &backendInfo[i] );
 336                         if ( rc != 0 ) {
 337 #ifdef NEW_LOGGING
 338                                 LDAP_LOG( BACKEND, CRIT,
 339                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 340 #else
 341                                 Debug( LDAP_DEBUG_ANY,
 342                                         "backend_startup: bi_open %d failed!\n",
 343                                         i, 0, 0 );
 344 #endif
 345                                 return rc;
 346                         }
 347                 }
 348         }
 349
 350         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 351         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 352         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 353
 354         /* open each backend database */
 355         for( i = 0; i < nBackendDB; i++ ) {
 356                 /* append global access controls */
 357                 acl_append( &backendDB[i].be_acl, global_acl );
 358
 359                 LDAP_TAILQ_INIT( &backendDB[i].be_pending_csn_list );
 360
 361                 if ( backendDB[i].bd_info->bi_db_open ) {
 362                         rc = backendDB[i].bd_info->bi_db_open(
 363                                 &backendDB[i] );
 364                         if ( rc != 0 ) {
 365 #ifdef NEW_LOGGING
 366                                 LDAP_LOG( BACKEND, CRIT,
 367                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 368 #else
 369                                 Debug( LDAP_DEBUG_ANY,
 370                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 371                                         i, rc, 0 );
 372 #endif
 373                                 return rc;
 374                         }
 375                 }
 376
 377                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 378                         syncinfo_t *si;
 379                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 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,
 384                                                 si->si_interval, do_syncrepl, (void *) si );
 385                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 386                         }
 387                 }
 388         }
 389
 390         return rc;
 391 }
 392
 393 int backend_num( Backend *be )
 394 {
 395         int i;
 396
 397         if( be == NULL ) return -1;
 398
 399         for( i = 0; i < nBackendDB; i++ ) {
 400                 if( be == &backendDB[i] ) return i;
 401         }
 402         return -1;
 403 }
 404
 405 int backend_shutdown( Backend *be )
 406 {
 407         int i;
 408         int rc = 0;
 409
 410         if( be != NULL ) {
 411                 /* shutdown a specific backend database */
 412
 413                 if ( be->bd_info->bi_nDB == 0 ) {
 414                         /* no database of this type, we never opened it */
 415                         return 0;
 416                 }
 417
 418                 if ( be->bd_info->bi_db_close ) {
 419                         be->bd_info->bi_db_close( be );
 420                 }
 421
 422                 if( be->bd_info->bi_close ) {
 423                         be->bd_info->bi_close( be->bd_info );
 424                 }
 425
 426                 return 0;
 427         }
 428
 429         /* close each backend database */
 430         for( i = 0; i < nBackendDB; i++ ) {
 431                 if ( backendDB[i].bd_info->bi_db_close ) {
 432                         backendDB[i].bd_info->bi_db_close(
 433                                 &backendDB[i] );
 434                 }
 435
 436                 if(rc != 0) {
 437 #ifdef NEW_LOGGING
 438                         LDAP_LOG( BACKEND, NOTICE,
 439                                 "backend_shutdown: bi_close %s failed!\n",
 440                                 backendDB[i].be_type, 0, 0 );
 441 #else
 442                         Debug( LDAP_DEBUG_ANY,
 443                                 "backend_close: bi_close %s failed!\n",
 444                                 backendDB[i].be_type, 0, 0 );
 445 #endif
 446                 }
 447         }
 448
 449         /* close each backend type */
 450         for( i = 0; i < nBackendInfo; i++ ) {
 451                 if( backendInfo[i].bi_nDB == 0 ) {
 452                         /* no database of this type */
 453                         continue;
 454                 }
 455
 456                 if( backendInfo[i].bi_close ) {
 457                         backendInfo[i].bi_close(
 458                                 &backendInfo[i] );
 459                 }
 460         }
 461
 462         return 0;
 463 }
 464
 465 int backend_destroy(void)
 466 {
 467         int i;
 468         BackendDB *bd;
 469
 470         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 471
 472         /* destroy each backend database */
 473         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 474                 if ( bd->bd_info->bi_db_destroy ) {
 475                         bd->bd_info->bi_db_destroy( bd );
 476                 }
 477                 ber_bvarray_free( bd->be_suffix );
 478                 ber_bvarray_free( bd->be_nsuffix );
 479                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 480                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 481                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 482                 acl_destroy( bd->be_acl, global_acl );
 483         }
 484         free( backendDB );
 485
 486         /* destroy each backend type */
 487         for( i = 0; i < nBackendInfo; i++ ) {
 488                 if( backendInfo[i].bi_destroy ) {
 489                         backendInfo[i].bi_destroy(
 490                                 &backendInfo[i] );
 491                 }
 492         }
 493
 494 #ifdef SLAPD_MODULES
 495         if (backendInfo != binfo) {
 496            free(backendInfo);
 497         }
 498 #endif /* SLAPD_MODULES */
 499
 500         nBackendInfo = 0;
 501         backendInfo = NULL;
 502
 503         return 0;
 504 }
 505
 506 BackendInfo* backend_info(const char *type)
 507 {
 508         int i;
 509
 510         /* search for the backend type */
 511         for( i = 0; i < nBackendInfo; i++ ) {
 512                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 513                         return &backendInfo[i];
 514                 }
 515         }
 516
 517         return NULL;
 518 }
 519
 520
 521 BackendDB *
 522 backend_db_init(
 523     const char  *type
 524 )
 525 {
 526         Backend *be;
 527         BackendInfo *bi = backend_info(type);
 528         int     rc = 0;
 529
 530         if( bi == NULL ) {
 531                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 532                 return NULL;
 533         }
 534
 535         backendDB = (BackendDB *) ch_realloc(
 536                         (char *) backendDB,
 537                     (nBackendDB + 1) * sizeof(Backend) );
 538
 539         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 540
 541         be = &backends[nbackends++];
 542
 543         be->bd_info = bi;
 544         be->be_def_limit = deflimit;
 545         be->be_dfltaccess = global_default_access;
 546
 547         be->be_restrictops = global_restrictops;
 548         be->be_requires = global_requires;
 549         be->be_ssf_set = global_ssf_set;
 550
 551         be->be_context_csn.bv_len = 0;
 552         be->be_context_csn.bv_val = NULL;
 553         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 554         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 555
 556         LDAP_STAILQ_INIT( &be->be_syncinfo );
 557
 558         /* assign a default depth limit for alias deref */
 559         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 560
 561         if(bi->bi_db_init) {
 562                 rc = bi->bi_db_init( be );
 563         }
 564
 565         if(rc != 0) {
 566                 fprintf( stderr, "database init failed (%s)\n", type );
 567                 nbackends--;
 568                 return NULL;
 569         }
 570
 571         bi->bi_nDB++;
 572         return( be );
 573 }
 574
 575 void
 576 be_db_close( void )
 577 {
 578         int     i;
 579
 580         for ( i = 0; i < nbackends; i++ ) {
 581                 if ( backends[i].bd_info->bi_db_close ) {
 582                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 583                 }
 584         }
 585 }
 586
 587 Backend *
 588 select_backend(
 589         struct berval * dn,
 590         int manageDSAit,
 591         int noSubs )
 592 {
 593         int     i, j;
 594         ber_len_t len, dnlen = dn->bv_len;
 595         Backend *be = NULL;
 596
 597         for ( i = 0; i < nbackends; i++ ) {
 598                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 599                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 600                 {
 601                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 602                                 && noSubs )
 603                         {
 604                                 continue;
 605                         }
 606
 607                         len = backends[i].be_nsuffix[j].bv_len;
 608
 609                         if ( len > dnlen ) {
 610                                 /* suffix is longer than DN */
 611                                 continue;
 612                         }
 613
 614                         /*
 615                          * input DN is normalized, so the separator check
 616                          * need not look at escaping
 617                          */
 618                         if ( len && len < dnlen &&
 619                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 620                         {
 621                                 continue;
 622                         }
 623
 624                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 625                                 &dn->bv_val[dnlen-len] ) == 0 )
 626                         {
 627                                 if( be == NULL ) {
 628                                         be = &backends[i];
 629
 630                                         if( manageDSAit && len == dnlen &&
 631                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 632                                                 continue;
 633                                         }
 634                                 } else {
 635                                         be = &backends[i];
 636                                 }
 637                                 return be;
 638                         }
 639                 }
 640         }
 641
 642         return be;
 643 }
 644
 645 int
 646 be_issuffix(
 647     Backend     *be,
 648     struct berval       *bvsuffix
 649 )
 650 {
 651         int     i;
 652
 653         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 654                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 655                         return( 1 );
 656                 }
 657         }
 658
 659         return( 0 );
 660 }
 661
 662 int
 663 be_isroot( Backend *be, struct berval *ndn )
 664 {
 665         if ( !ndn->bv_len ) {
 666                 return( 0 );
 667         }
 668
 669         if ( !be->be_rootndn.bv_len ) {
 670                 return( 0 );
 671         }
 672
 673         return dn_match( &be->be_rootndn, ndn );
 674 }
 675
 676 int
 677 be_isupdate( Backend *be, struct berval *ndn )
 678 {
 679         if ( !ndn->bv_len ) {
 680                 return( 0 );
 681         }
 682
 683         if ( !be->be_update_ndn.bv_len ) {
 684                 return( 0 );
 685         }
 686
 687         return dn_match( &be->be_update_ndn, ndn );
 688 }
 689
 690 struct berval *
 691 be_root_dn( Backend *be )
 692 {
 693         return &be->be_rootdn;
 694 }
 695
 696 int
 697 be_isroot_pw( Operation *op )
 698 {
 699         int result;
 700         char *errmsg;
 701
 702         if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
 703                 return 0;
 704         }
 705
 706         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 707                 return 0;
 708         }
 709
 710 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 711         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 712 #ifdef SLAPD_SPASSWD
 713         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 714 #endif
 715 #endif
 716
 717         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 718
 719 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 720 #ifdef SLAPD_SPASSWD
 721         lutil_passwd_sasl_conn = NULL;
 722 #endif
 723         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 724 #endif
 725
 726         return result == 0;
 727 }
 728
 729 int
 730 be_entry_release_rw(
 731         Operation *op,
 732         Entry *e,
 733         int rw )
 734 {
 735         if ( op->o_bd->be_release ) {
 736                 /* free and release entry from backend */
 737                 return op->o_bd->be_release( op, e, rw );
 738         } else {
 739                 /* free entry */
 740                 entry_free( e );
 741                 return 0;
 742         }
 743 }
 744
 745 int
 746 backend_unbind( Operation *op, SlapReply *rs )
 747 {
 748         int             i;
 749
 750         for ( i = 0; i < nbackends; i++ ) {
 751 #if defined( LDAP_SLAPI )
 752                 if ( op->o_pb ) {
 753                         int rc;
 754                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 755                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 756                         rc = doPluginFNs( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 757                                         (Slapi_PBlock *)op->o_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                 }
 773 #endif /* defined( LDAP_SLAPI ) */
 774
 775                 if ( backends[i].be_unbind ) {
 776                         op->o_bd = &backends[i];
 777                         (*backends[i].be_unbind)( op, rs );
 778                 }
 779
 780 #if defined( LDAP_SLAPI )
 781                 if ( op->o_pb && doPluginFNs( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 782                                 (Slapi_PBlock *)op->o_pb ) < 0 ) {
 783 #ifdef NEW_LOGGING
 784                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 785                                         "failed\n", 0, 0, 0);
 786 #else
 787                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 788                                         "failed.\n", 0, 0, 0);
 789 #endif
 790                 }
 791 #endif /* defined( LDAP_SLAPI ) */
 792         }
 793
 794         return 0;
 795 }
 796
 797 int
 798 backend_connection_init(
 799         Connection   *conn
 800 )
 801 {
 802         int     i;
 803
 804         for ( i = 0; i < nbackends; i++ ) {
 805                 if ( backends[i].be_connection_init ) {
 806                         (*backends[i].be_connection_init)( &backends[i], conn);
 807                 }
 808         }
 809
 810         return 0;
 811 }
 812
 813 int
 814 backend_connection_destroy(
 815         Connection   *conn
 816 )
 817 {
 818         int     i;
 819
 820         for ( i = 0; i < nbackends; i++ ) {
 821                 if ( backends[i].be_connection_destroy ) {
 822                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 823                 }
 824         }
 825
 826         return 0;
 827 }
 828
 829 static int
 830 backend_check_controls(
 831         Operation *op,
 832         SlapReply *rs )
 833 {
 834         LDAPControl **ctrls = op->o_ctrls;
 835         rs->sr_err = LDAP_SUCCESS;
 836
 837         if( ctrls ) {
 838                 for( ; *ctrls != NULL ; ctrls++ ) {
 839                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 840                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 841                         {
 842                                 rs->sr_text = "control unavailable in context";
 843                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 844                                 break;
 845                         }
 846                 }
 847         }
 848
 849         return rs->sr_err;
 850 }
 851
 852 int
 853 backend_check_restrictions(
 854         Operation *op,
 855         SlapReply *rs,
 856         struct berval *opdata )
 857 {
 858         slap_mask_t restrictops;
 859         slap_mask_t requires;
 860         slap_mask_t opflag;
 861         slap_ssf_set_t *ssf;
 862         int updateop = 0;
 863         int starttls = 0;
 864         int session = 0;
 865
 866         if( op->o_bd ) {
 867                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 868                         return rs->sr_err;
 869                 }
 870
 871                 restrictops = op->o_bd->be_restrictops;
 872                 requires = op->o_bd->be_requires;
 873                 ssf = &op->o_bd->be_ssf_set;
 874
 875         } else {
 876                 restrictops = global_restrictops;
 877                 requires = global_requires;
 878                 ssf = &global_ssf_set;
 879         }
 880
 881         switch( op->o_tag ) {
 882         case LDAP_REQ_ADD:
 883                 opflag = SLAP_RESTRICT_OP_ADD;
 884                 updateop++;
 885                 break;
 886         case LDAP_REQ_BIND:
 887                 opflag = SLAP_RESTRICT_OP_BIND;
 888                 session++;
 889                 break;
 890         case LDAP_REQ_COMPARE:
 891                 opflag = SLAP_RESTRICT_OP_COMPARE;
 892                 break;
 893         case LDAP_REQ_DELETE:
 894                 updateop++;
 895                 opflag = SLAP_RESTRICT_OP_DELETE;
 896                 break;
 897         case LDAP_REQ_EXTENDED:
 898                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 899
 900                 if( !opdata ) {
 901                         /* treat unspecified as a modify */
 902                         opflag = SLAP_RESTRICT_OP_MODIFY;
 903                         updateop++;
 904                         break;
 905                 }
 906
 907                 {
 908                         if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 909                                 session++;
 910                                 starttls++;
 911                                 break;
 912                         }
 913                 }
 914
 915                 {
 916                         if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 917                                 break;
 918                         }
 919                 }
 920
 921 #ifdef LDAP_EXOP_X_CANCEL
 922                 {
 923                         if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 924                                 break;
 925                         }
 926                 }
 927 #endif
 928
 929                 /* treat everything else as a modify */
 930                 opflag = SLAP_RESTRICT_OP_MODIFY;
 931                 updateop++;
 932                 break;
 933
 934         case LDAP_REQ_MODIFY:
 935                 updateop++;
 936                 opflag = SLAP_RESTRICT_OP_MODIFY;
 937                 break;
 938         case LDAP_REQ_RENAME:
 939                 updateop++;
 940                 opflag = SLAP_RESTRICT_OP_RENAME;
 941                 break;
 942         case LDAP_REQ_SEARCH:
 943                 opflag = SLAP_RESTRICT_OP_SEARCH;
 944                 break;
 945         case LDAP_REQ_UNBIND:
 946                 session++;
 947                 opflag = 0;
 948                 break;
 949         default:
 950                 rs->sr_text = "restrict operations internal error";
 951                 rs->sr_err = LDAP_OTHER;
 952                 return rs->sr_err;
 953         }
 954
 955         if ( !starttls ) {
 956                 /* these checks don't apply to StartTLS */
 957
 958                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 959                 if( op->o_transport_ssf < ssf->sss_transport ) {
 960                         rs->sr_text = "transport confidentiality required";
 961                         return rs->sr_err;
 962                 }
 963
 964                 if( op->o_tls_ssf < ssf->sss_tls ) {
 965                         rs->sr_text = "TLS confidentiality required";
 966                         return rs->sr_err;
 967                 }
 968
 969
 970                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 971                         /* simple bind specific check */
 972                         if( op->o_ssf < ssf->sss_simple_bind ) {
 973                                 rs->sr_text = "confidentiality required";
 974                                 return rs->sr_err;
 975                         }
 976                 }
 977
 978                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 979                         /* these checks don't apply to SASL bind */
 980
 981                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 982                                 rs->sr_text = "SASL confidentiality required";
 983                                 return rs->sr_err;
 984                         }
 985
 986                         if( op->o_ssf < ssf->sss_ssf ) {
 987                                 rs->sr_text = "confidentiality required";
 988                                 return rs->sr_err;
 989                         }
 990                 }
 991
 992                 if( updateop ) {
 993                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 994                                 rs->sr_text = "transport update confidentiality required";
 995                                 return rs->sr_err;
 996                         }
 997
 998                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
 999                                 rs->sr_text = "TLS update confidentiality required";
1000                                 return rs->sr_err;
1001                         }
1002
1003                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1004                                 rs->sr_text = "SASL update confidentiality required";
1005                                 return rs->sr_err;
1006                         }
1007
1008                         if( op->o_ssf < ssf->sss_update_ssf ) {
1009                                 rs->sr_text = "update confidentiality required";
1010                                 return rs->sr_err;
1011                         }
1012
1013                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1014                                 op->o_ndn.bv_len == 0 )
1015                         {
1016                                 rs->sr_text = "modifications require authentication";
1017                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1018                                 return rs->sr_err;
1019                         }
1020
1021 #ifdef SLAP_X_LISTENER_MOD
1022                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1023                                 /* no "w" mode means readonly */
1024                                 rs->sr_text = "modifications not allowed on this listener";
1025                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1026                                 return rs->sr_err;
1027                         }
1028 #endif /* SLAP_X_LISTENER_MOD */
1029                 }
1030         }
1031
1032         if ( !session ) {
1033                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1034
1035                 if( requires & SLAP_REQUIRE_STRONG ) {
1036                         /* should check mechanism */
1037                         if( ( op->o_transport_ssf < ssf->sss_transport
1038                                 && op->o_authtype == LDAP_AUTH_SIMPLE ) || op->o_dn.bv_len == 0 )
1039                         {
1040                                 rs->sr_text = "strong authentication required";
1041                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1042                                 return rs->sr_err;
1043                         }
1044                 }
1045
1046                 if( requires & SLAP_REQUIRE_SASL ) {
1047                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1048                                 rs->sr_text = "SASL authentication required";
1049                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1050                                 return rs->sr_err;
1051                         }
1052                 }
1053
1054                 if( requires & SLAP_REQUIRE_AUTHC ) {
1055                         if( op->o_dn.bv_len == 0 ) {
1056                                 rs->sr_text = "authentication required";
1057                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1058                                 return rs->sr_err;
1059                         }
1060                 }
1061
1062                 if( requires & SLAP_REQUIRE_BIND ) {
1063                         int version;
1064                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1065                         version = op->o_conn->c_protocol;
1066                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1067
1068                         if( !version ) {
1069                                 /* no bind has occurred */
1070                                 rs->sr_text = "BIND required";
1071                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1072                                 return rs->sr_err;
1073                         }
1074                 }
1075
1076                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1077                         if( op->o_protocol < LDAP_VERSION3 ) {
1078                                 /* no bind has occurred */
1079                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1080                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1081                                 return rs->sr_err;
1082                         }
1083                 }
1084
1085 #ifdef SLAP_X_LISTENER_MOD
1086                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1087                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1088                                 /* no "x" mode means bind required */
1089                                 rs->sr_text = "bind required on this listener";
1090                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1091                                 return rs->sr_err;
1092                         }
1093                 }
1094
1095                 if ( !starttls && !updateop ) {
1096                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1097                                 /* no "r" mode means no read */
1098                                 rs->sr_text = "read not allowed on this listener";
1099                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1100                                 return rs->sr_err;
1101                         }
1102                 }
1103 #endif /* SLAP_X_LISTENER_MOD */
1104
1105         }
1106
1107         if( restrictops & opflag ) {
1108                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1109                         rs->sr_text = "read operations restricted";
1110                 } else {
1111                         rs->sr_text = "operation restricted";
1112                 }
1113                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1114                 return rs->sr_err;
1115         }
1116
1117         rs->sr_err = LDAP_SUCCESS;
1118         return rs->sr_err;
1119 }
1120
1121 int backend_check_referrals( Operation *op, SlapReply *rs )
1122 {
1123         rs->sr_err = LDAP_SUCCESS;
1124
1125         if( op->o_bd->be_chk_referrals ) {
1126                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1127
1128                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1129                         send_ldap_result( op, rs );
1130                 }
1131         }
1132
1133         return rs->sr_err;
1134 }
1135
1136 int
1137 be_entry_get_rw(
1138         Operation *op,
1139         struct berval *ndn,
1140         ObjectClass *oc,
1141         AttributeDescription *at,
1142         int rw,
1143         Entry **e )
1144 {
1145         int rc;
1146
1147         *e = NULL;
1148
1149         if (op->o_bd == NULL) {
1150                 rc = LDAP_NO_SUCH_OBJECT;
1151         } else if ( op->o_bd->be_fetch ) {
1152                 rc = ( op->o_bd->be_fetch )( op, ndn,
1153                         oc, at, rw, e );
1154         } else {
1155                 rc = LDAP_UNWILLING_TO_PERFORM;
1156         }
1157         return rc;
1158 }
1159
1160 int
1161 backend_group(
1162         Operation *op,
1163         Entry   *target,
1164         struct berval *gr_ndn,
1165         struct berval *op_ndn,
1166         ObjectClass *group_oc,
1167         AttributeDescription *group_at
1168 )
1169 {
1170         Entry *e;
1171         Attribute *a;
1172         int rc;
1173         GroupAssertion *g;
1174         Backend *be = op->o_bd;
1175
1176         if ( op->o_abandon ) return SLAPD_ABANDON;
1177
1178         op->o_bd = select_backend( gr_ndn, 0, 0 );
1179
1180         for (g = op->o_groups; g; g=g->ga_next) {
1181                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1182                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1183                         continue;
1184                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1185                         break;
1186         }
1187
1188         if (g) {
1189                 rc = g->ga_res;
1190                 goto done;
1191         }
1192
1193         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1194                 e = target;
1195                 rc = 0;
1196         } else {
1197                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1198         }
1199         if ( e ) {
1200                 a = attr_find( e->e_attrs, group_at );
1201                 if ( a ) {
1202                         /* If the attribute is a subtype of labeledURI, treat this as
1203                          * a dynamic group ala groupOfURLs
1204                          */
1205                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1206                                 int i;
1207                                 LDAPURLDesc *ludp;
1208                                 struct berval bv, nbase;
1209                                 Filter *filter;
1210                                 Entry *user;
1211                                 Backend *b2 = op->o_bd;
1212
1213                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1214                                         user = target;
1215                                 } else {
1216                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1217                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1218                                 }
1219
1220                                 if ( rc == 0 ) {
1221                                         rc = 1;
1222                                         for (i=0; a->a_vals[i].bv_val; i++) {
1223                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1224                                                         continue;
1225                                                 nbase.bv_val = NULL;
1226                                                 /* host part must be empty */
1227                                                 /* attrs and extensions parts must be empty */
1228                                                 if (( ludp->lud_host && *ludp->lud_host )
1229                                                         || ludp->lud_attrs || ludp->lud_exts )
1230                                                         goto loopit;
1231                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1232                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1233                                                         goto loopit;
1234                                                 switch(ludp->lud_scope) {
1235                                                 case LDAP_SCOPE_BASE:
1236                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1237                                                         break;
1238                                                 case LDAP_SCOPE_ONELEVEL:
1239                                                         dnParent(op_ndn, &bv );
1240                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1241                                                         break;
1242                                                 case LDAP_SCOPE_SUBTREE:
1243                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1244                                                         break;
1245                                                 case LDAP_SCOPE_SUBORDINATE:
1246                                                         if ( dn_match( &nbase, op_ndn ) &&
1247                                                                 !dnIsSuffix(op_ndn, &nbase ))
1248                                                         {
1249                                                                 goto loopit;
1250                                                         }
1251                                                 }
1252                                                 filter = str2filter_x( op, ludp->lud_filter );
1253                                                 if ( filter ) {
1254                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1255                                                         {
1256                                                                 rc = 0;
1257                                                         }
1258                                                         filter_free_x( op, filter );
1259                                                 }
1260         loopit:
1261                                                 ldap_free_urldesc( ludp );
1262                                                 if ( nbase.bv_val ) {
1263                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1264                                                 }
1265                                                 if ( rc == 0 ) break;
1266                                         }
1267                                         if ( user != target ) {
1268                                                 be_entry_release_r( op, user );
1269                                         }
1270                                 }
1271                                 op->o_bd = b2;
1272                         } else {
1273                                 rc = value_find_ex( group_at,
1274                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1275                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1276                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1277                         }
1278                 } else {
1279                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1280                 }
1281                 if (e != target ) {
1282                         be_entry_release_r( op, e );
1283                 }
1284         } else {
1285                 rc = LDAP_NO_SUCH_OBJECT;
1286         }
1287
1288         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1289                 g = sl_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len, op->o_tmpmemctx);
1290                 g->ga_be = op->o_bd;
1291                 g->ga_oc = group_oc;
1292                 g->ga_at = group_at;
1293                 g->ga_res = rc;
1294                 g->ga_len = gr_ndn->bv_len;
1295                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1296                 g->ga_next = op->o_groups;
1297                 op->o_groups = g;
1298         }
1299 done:
1300         op->o_bd = be;
1301         return rc;
1302 }
1303
1304 int
1305 backend_attribute(
1306         Operation *op,
1307         Entry   *target,
1308         struct berval   *edn,
1309         AttributeDescription *entry_at,
1310         BerVarray *vals
1311 )
1312 {
1313         Entry *e;
1314         Attribute *a;
1315         int i, j, rc = LDAP_SUCCESS;
1316         AccessControlState acl_state = ACL_STATE_INIT;
1317         Backend *be = op->o_bd;
1318
1319         op->o_bd = select_backend( edn, 0, 0 );
1320
1321         if ( target && dn_match( &target->e_nname, edn ) ) {
1322                 e = target;
1323         } else {
1324                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1325         }
1326
1327         if ( e ) {
1328                 a = attr_find( e->e_attrs, entry_at );
1329                 if ( a ) {
1330                         BerVarray v;
1331
1332                         if ( op->o_conn && access_allowed( op,
1333                                 e, entry_at, NULL, ACL_AUTH,
1334                                 &acl_state ) == 0 ) {
1335                                 rc = LDAP_INSUFFICIENT_ACCESS;
1336                                 goto freeit;
1337                         }
1338
1339                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1340
1341                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1342                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1343                                 if ( op->o_conn && access_allowed( op,
1344                                         e, entry_at,
1345                                         &a->a_nvals[i],
1346                                         ACL_AUTH, &acl_state ) == 0 ) {
1347                                         continue;
1348                                 }
1349                                 ber_dupbv_x( &v[j],
1350                                         &a->a_nvals[i], op->o_tmpmemctx );
1351                                 if (v[j].bv_val ) j++;
1352                         }
1353                         if (j == 0) {
1354                                 op->o_tmpfree( v, op->o_tmpmemctx );
1355                                 *vals = NULL;
1356                                 rc = LDAP_INSUFFICIENT_ACCESS;
1357                         } else {
1358                                 v[j].bv_val = NULL;
1359                                 v[j].bv_len = 0;
1360                                 *vals = v;
1361                                 rc = LDAP_SUCCESS;
1362                         }
1363                 }
1364 freeit:         if (e != target ) {
1365                         be_entry_release_r( op, e );
1366                 }
1367         }
1368
1369         op->o_bd = be;
1370         return rc;
1371 }
1372
1373 Attribute *backend_operational(
1374         Operation *op,
1375         SlapReply *rs,
1376         int opattrs     )
1377 {
1378         Attribute *a = NULL, **ap = &a;
1379
1380         /*
1381          * If operational attributes (allegedly) are required,
1382          * and the backend supports specific operational attributes,
1383          * add them to the attribute list
1384          */
1385         if ( opattrs || ( op->ors_attrs &&
1386                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1387                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1388                 ap = &(*ap)->a_next;
1389         }
1390
1391         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1392                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1393         }
1394
1395         return a;
1396 }
1397