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

   1 /* backend.c - routines for dealing with back-end databases */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31
  32 #include <ac/string.h>
  33 #include <ac/socket.h>
  34 #include <sys/stat.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38 #include "lber_pvt.h"
  39
  40 #include "ldap_rq.h"
  41
  42 #ifdef LDAP_SLAPI
  43 #include "slapi/slapi.h"
  44 #endif
  45
  46 /*
  47  * If a module is configured as dynamic, its header should not
  48  * get included into slapd. While this is a general rule and does
  49  * not have much of an effect in UNIX, this rule should be adhered
  50  * to for Windows, where dynamic object code should not be implicitly
  51  * imported into slapd without appropriate __declspec(dllimport) directives.
  52  */
  53
  54 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  55 #include "back-bdb/external.h"
  56 #endif
  57 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  58 #include "back-dnssrv/external.h"
  59 #endif
  60 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  61 #include "back-hdb/external.h"
  62 #endif
  63 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  64 #include "back-ldap/external.h"
  65 #endif
  66 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  67 #include "back-ldbm/external.h"
  68 #endif
  69 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  70 #include "back-meta/external.h"
  71 #endif
  72 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  73 #include "back-monitor/external.h"
  74 #endif
  75 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
  76 #include "back-null/external.h"
  77 #endif
  78 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  79 #include "back-passwd/external.h"
  80 #endif
  81 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  82 #include "back-perl/external.h"
  83 #endif
  84 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  85 #include "back-shell/external.h"
  86 #endif
  87 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  88 #include "back-tcl/external.h"
  89 #endif
  90 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  91 #include "back-sql/external.h"
  92 #endif
  93 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
  94 #include "private/external.h"
  95 #endif
  96
  97 static BackendInfo binfo[] = {
  98 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  99         {"bdb", bdb_initialize},
 100 #endif
 101 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
 102         {"dnssrv",      dnssrv_back_initialize},
 103 #endif
 104 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
 105         {"hdb", hdb_initialize},
 106 #endif
 107 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
 108         {"ldap",        ldap_back_initialize},
 109 #endif
 110 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
 111         {"ldbm",        ldbm_back_initialize},
 112 #endif
 113 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
 114         {"meta",        meta_back_initialize},
 115 #endif
 116 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
 117         {"monitor",     monitor_back_initialize},
 118 #endif
 119 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
 120         {"null",        null_back_initialize},
 121 #endif
 122 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 123         {"passwd",      passwd_back_initialize},
 124 #endif
 125 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 126         {"perl",        perl_back_initialize},
 127 #endif
 128 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 129         {"shell",       shell_back_initialize},
 130 #endif
 131 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 132         {"tcl",         tcl_back_initialize},
 133 #endif
 134 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
 135         {"sql",         sql_back_initialize},
 136 #endif
 137         /* for any private backend */
 138 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
 139         {"private",     private_back_initialize},
 140 #endif
 141         {NULL}
 142 };
 143
 144 int                     nBackendInfo = 0;
 145 BackendInfo     *backendInfo = NULL;
 146
 147 int                     nBackendDB = 0;
 148 BackendDB       *backendDB = NULL;
 149
 150 ldap_pvt_thread_pool_t  syncrepl_pool;
 151 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 152
 153 int backend_init(void)
 154 {
 155         int rc = -1;
 156
 157         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 158
 159         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 160                 /* already initialized */
 161 #ifdef NEW_LOGGING
 162                 LDAP_LOG( BACKEND, ERR,
 163                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 164 #else
 165                 Debug( LDAP_DEBUG_ANY,
 166                         "backend_init: already initialized.\n", 0, 0, 0 );
 167 #endif
 168                 return -1;
 169         }
 170
 171         for( ;
 172                 binfo[nBackendInfo].bi_type != NULL;
 173                 nBackendInfo++ )
 174         {
 175                 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 ? be->be_suffix[0].bv_val : "(unknown)",
 287                         0, 0 );
 288 #else
 289                 Debug( LDAP_DEBUG_TRACE,
 290                         "backend_startup: starting \"%s\"\n",
 291                         be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 292                         0, 0 );
 293 #endif
 294
 295                 if ( be->bd_info->bi_open ) {
 296                         rc = be->bd_info->bi_open( be->bd_info );
 297                         if ( rc != 0 ) {
 298 #ifdef NEW_LOGGING
 299                                 LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
 300 #else
 301                                 Debug( LDAP_DEBUG_ANY,
 302                                         "backend_startup: bi_open failed!\n",
 303                                         0, 0, 0 );
 304 #endif
 305
 306                                 return rc;
 307                         }
 308                 }
 309
 310                 if ( be->bd_info->bi_db_open ) {
 311                         rc = be->bd_info->bi_db_open( be );
 312                         if ( rc != 0 ) {
 313 #ifdef NEW_LOGGING
 314                                 LDAP_LOG( BACKEND, CRIT,
 315                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 316 #else
 317                                 Debug( LDAP_DEBUG_ANY,
 318                                         "backend_startup: bi_db_open failed! (%d)\n",
 319                                         rc, 0, 0 );
 320 #endif
 321                                 return rc;
 322                         }
 323                 }
 324
 325                 return rc;
 326         }
 327
 328         /* open each backend type */
 329         for( i = 0; i < nBackendInfo; i++ ) {
 330                 if( backendInfo[i].bi_nDB == 0) {
 331                         /* no database of this type, don't open */
 332                         continue;
 333                 }
 334
 335                 if( backendInfo[i].bi_open ) {
 336                         rc = backendInfo[i].bi_open(
 337                                 &backendInfo[i] );
 338                         if ( rc != 0 ) {
 339 #ifdef NEW_LOGGING
 340                                 LDAP_LOG( BACKEND, CRIT,
 341                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 342 #else
 343                                 Debug( LDAP_DEBUG_ANY,
 344                                         "backend_startup: bi_open %d failed!\n",
 345                                         i, 0, 0 );
 346 #endif
 347                                 return rc;
 348                         }
 349                 }
 350         }
 351
 352         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 353         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 354         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 355
 356         /* open each backend database */
 357         for( i = 0; i < nBackendDB; i++ ) {
 358                 /* append global access controls */
 359                 acl_append( &backendDB[i].be_acl, global_acl );
 360
 361                 LDAP_TAILQ_INIT( &backendDB[i].be_pending_csn_list );
 362
 363                 if ( backendDB[i].bd_info->bi_db_open ) {
 364                         rc = backendDB[i].bd_info->bi_db_open(
 365                                 &backendDB[i] );
 366                         if ( rc != 0 ) {
 367 #ifdef NEW_LOGGING
 368                                 LDAP_LOG( BACKEND, CRIT,
 369                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 370 #else
 371                                 Debug( LDAP_DEBUG_ANY,
 372                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 373                                         i, rc, 0 );
 374 #endif
 375                                 return rc;
 376                         }
 377                 }
 378
 379                 if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) {
 380                         syncinfo_t *si;
 381                         LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) {
 382                                 si->si_be = &backendDB[i];
 383                                 init_syncrepl( si );
 384                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 385                                 ldap_pvt_runqueue_insert( &syncrepl_rq,
 386                                                 si->si_interval, do_syncrepl, (void *) si );
 387                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 388                         }
 389                 }
 390         }
 391
 392         return rc;
 393 }
 394
 395 int backend_num( Backend *be )
 396 {
 397         int i;
 398
 399         if( be == NULL ) return -1;
 400
 401         for( i = 0; i < nBackendDB; i++ ) {
 402                 if( be == &backendDB[i] ) return i;
 403         }
 404         return -1;
 405 }
 406
 407 int backend_shutdown( Backend *be )
 408 {
 409         int i;
 410         int rc = 0;
 411
 412         if( be != NULL ) {
 413                 /* shutdown a specific backend database */
 414
 415                 if ( be->bd_info->bi_nDB == 0 ) {
 416                         /* no database of this type, we never opened it */
 417                         return 0;
 418                 }
 419
 420                 if ( be->bd_info->bi_db_close ) {
 421                         be->bd_info->bi_db_close( be );
 422                 }
 423
 424                 if( be->bd_info->bi_close ) {
 425                         be->bd_info->bi_close( be->bd_info );
 426                 }
 427
 428                 return 0;
 429         }
 430
 431         /* close each backend database */
 432         for( i = 0; i < nBackendDB; i++ ) {
 433                 if ( backendDB[i].bd_info->bi_db_close ) {
 434                         backendDB[i].bd_info->bi_db_close(
 435                                 &backendDB[i] );
 436                 }
 437
 438                 if(rc != 0) {
 439 #ifdef NEW_LOGGING
 440                         LDAP_LOG( BACKEND, NOTICE,
 441                                 "backend_shutdown: bi_close %s failed!\n",
 442                                 backendDB[i].be_type, 0, 0 );
 443 #else
 444                         Debug( LDAP_DEBUG_ANY,
 445                                 "backend_close: bi_close %s failed!\n",
 446                                 backendDB[i].be_type, 0, 0 );
 447 #endif
 448                 }
 449         }
 450
 451         /* close each backend type */
 452         for( i = 0; i < nBackendInfo; i++ ) {
 453                 if( backendInfo[i].bi_nDB == 0 ) {
 454                         /* no database of this type */
 455                         continue;
 456                 }
 457
 458                 if( backendInfo[i].bi_close ) {
 459                         backendInfo[i].bi_close(
 460                                 &backendInfo[i] );
 461                 }
 462         }
 463
 464         return 0;
 465 }
 466
 467 int backend_destroy(void)
 468 {
 469         int i;
 470         BackendDB *bd;
 471
 472         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 473
 474         /* destroy each backend database */
 475         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 476                 if ( bd->bd_info->bi_db_destroy ) {
 477                         bd->bd_info->bi_db_destroy( bd );
 478                 }
 479                 ber_bvarray_free( bd->be_suffix );
 480                 ber_bvarray_free( bd->be_nsuffix );
 481                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 482                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 483                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 484                 acl_destroy( bd->be_acl, global_acl );
 485         }
 486         free( backendDB );
 487
 488         /* destroy each backend type */
 489         for( i = 0; i < nBackendInfo; i++ ) {
 490                 if( backendInfo[i].bi_destroy ) {
 491                         backendInfo[i].bi_destroy(
 492                                 &backendInfo[i] );
 493                 }
 494         }
 495
 496 #ifdef SLAPD_MODULES
 497         if (backendInfo != binfo) {
 498            free(backendInfo);
 499         }
 500 #endif /* SLAPD_MODULES */
 501
 502         nBackendInfo = 0;
 503         backendInfo = NULL;
 504
 505         return 0;
 506 }
 507
 508 BackendInfo* backend_info(const char *type)
 509 {
 510         int i;
 511
 512         /* search for the backend type */
 513         for( i = 0; i < nBackendInfo; i++ ) {
 514                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 515                         return &backendInfo[i];
 516                 }
 517         }
 518
 519         return NULL;
 520 }
 521
 522
 523 BackendDB *
 524 backend_db_init(
 525     const char  *type
 526 )
 527 {
 528         Backend *be;
 529         BackendInfo *bi = backend_info(type);
 530         int     rc = 0;
 531
 532         if( bi == NULL ) {
 533                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 534                 return NULL;
 535         }
 536
 537         backendDB = (BackendDB *) ch_realloc(
 538                         (char *) backendDB,
 539                     (nBackendDB + 1) * sizeof(Backend) );
 540
 541         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 542
 543         be = &backends[nbackends++];
 544
 545         be->bd_info = bi;
 546         be->be_def_limit = deflimit;
 547         be->be_dfltaccess = global_default_access;
 548
 549         be->be_restrictops = global_restrictops;
 550         be->be_requires = global_requires;
 551         be->be_ssf_set = global_ssf_set;
 552
 553         be->be_context_csn.bv_len = 0;
 554         be->be_context_csn.bv_val = NULL;
 555         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 556         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 557
 558         LDAP_STAILQ_INIT( &be->be_syncinfo );
 559
 560         /* assign a default depth limit for alias deref */
 561         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 562
 563         if(bi->bi_db_init) {
 564                 rc = bi->bi_db_init( be );
 565         }
 566
 567         if(rc != 0) {
 568                 fprintf( stderr, "database init failed (%s)\n", type );
 569                 nbackends--;
 570                 return NULL;
 571         }
 572
 573         bi->bi_nDB++;
 574         return( be );
 575 }
 576
 577 void
 578 be_db_close( void )
 579 {
 580         int     i;
 581
 582         for ( i = 0; i < nbackends; i++ ) {
 583                 if ( backends[i].bd_info->bi_db_close ) {
 584                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 585                 }
 586         }
 587 }
 588
 589 Backend *
 590 select_backend(
 591         struct berval * dn,
 592         int manageDSAit,
 593         int noSubs )
 594 {
 595         int     i, j;
 596         ber_len_t len, dnlen = dn->bv_len;
 597         Backend *be = NULL;
 598
 599         for ( i = 0; i < nbackends; i++ ) {
 600                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 601                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 602                 {
 603                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 604                                 && noSubs )
 605                         {
 606                                 continue;
 607                         }
 608
 609                         len = backends[i].be_nsuffix[j].bv_len;
 610
 611                         if ( len > dnlen ) {
 612                                 /* suffix is longer than DN */
 613                                 continue;
 614                         }
 615
 616                         /*
 617                          * input DN is normalized, so the separator check
 618                          * need not look at escaping
 619                          */
 620                         if ( len && len < dnlen &&
 621                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 622                         {
 623                                 continue;
 624                         }
 625
 626                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 627                                 &dn->bv_val[dnlen-len] ) == 0 )
 628                         {
 629                                 if( be == NULL ) {
 630                                         be = &backends[i];
 631
 632                                         if( manageDSAit && len == dnlen &&
 633                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 634                                                 continue;
 635                                         }
 636                                 } else {
 637                                         be = &backends[i];
 638                                 }
 639                                 return be;
 640                         }
 641                 }
 642         }
 643
 644         return be;
 645 }
 646
 647 int
 648 be_issuffix(
 649     Backend     *be,
 650     struct berval       *bvsuffix
 651 )
 652 {
 653         int     i;
 654
 655         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 656                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 657                         return( 1 );
 658                 }
 659         }
 660
 661         return( 0 );
 662 }
 663
 664 int
 665 be_isroot( Backend *be, struct berval *ndn )
 666 {
 667         if ( !ndn->bv_len ) {
 668                 return( 0 );
 669         }
 670
 671         if ( !be->be_rootndn.bv_len ) {
 672                 return( 0 );
 673         }
 674
 675         return dn_match( &be->be_rootndn, ndn );
 676 }
 677
 678 int
 679 be_isupdate( Backend *be, struct berval *ndn )
 680 {
 681         if ( !ndn->bv_len ) {
 682                 return( 0 );
 683         }
 684
 685         if ( !be->be_update_ndn.bv_len ) {
 686                 return( 0 );
 687         }
 688
 689         return dn_match( &be->be_update_ndn, ndn );
 690 }
 691
 692 struct berval *
 693 be_root_dn( Backend *be )
 694 {
 695         return &be->be_rootdn;
 696 }
 697
 698 int
 699 be_isroot_pw( Operation *op )
 700 {
 701         int result;
 702         char *errmsg;
 703
 704         if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
 705                 return 0;
 706         }
 707
 708         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 709                 return 0;
 710         }
 711
 712 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 713         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 714 #ifdef SLAPD_SPASSWD
 715         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 716 #endif
 717 #endif
 718
 719         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 720
 721 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 722 #ifdef SLAPD_SPASSWD
 723         lutil_passwd_sasl_conn = NULL;
 724 #endif
 725         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 726 #endif
 727
 728         return result == 0;
 729 }
 730
 731 int
 732 be_entry_release_rw(
 733         Operation *op,
 734         Entry *e,
 735         int rw )
 736 {
 737         if ( op->o_bd->be_release ) {
 738                 /* free and release entry from backend */
 739                 return op->o_bd->be_release( op, e, rw );
 740         } else {
 741                 /* free entry */
 742                 entry_free( e );
 743                 return 0;
 744         }
 745 }
 746
 747 int
 748 backend_unbind( Operation *op, SlapReply *rs )
 749 {
 750         int             i;
 751
 752         for ( i = 0; i < nbackends; i++ ) {
 753 #if defined( LDAP_SLAPI )
 754                 if ( op->o_pb ) {
 755                         int rc;
 756                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 757                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 758                         rc = slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 759                                         (Slapi_PBlock *)op->o_pb );
 760                         if ( rc < 0 ) {
 761                                 /*
 762                                  * A preoperation plugin failure will abort the
 763                                  * entire operation.
 764                                  */
 765 #ifdef NEW_LOGGING
 766                                 LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 767                                                 "failed\n", 0, 0, 0);
 768 #else
 769                                 Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 770                                                 "failed.\n", 0, 0, 0);
 771 #endif
 772                                 return 0;
 773                         }
 774                 }
 775 #endif /* defined( LDAP_SLAPI ) */
 776
 777                 if ( backends[i].be_unbind ) {
 778                         op->o_bd = &backends[i];
 779                         (*backends[i].be_unbind)( op, rs );
 780                 }
 781
 782 #if defined( LDAP_SLAPI )
 783                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 784                                 (Slapi_PBlock *)op->o_pb ) < 0 ) {
 785 #ifdef NEW_LOGGING
 786                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 787                                         "failed\n", 0, 0, 0);
 788 #else
 789                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 790                                         "failed.\n", 0, 0, 0);
 791 #endif
 792                 }
 793 #endif /* defined( LDAP_SLAPI ) */
 794         }
 795
 796         return 0;
 797 }
 798
 799 int
 800 backend_connection_init(
 801         Connection   *conn
 802 )
 803 {
 804         int     i;
 805
 806         for ( i = 0; i < nbackends; i++ ) {
 807                 if ( backends[i].be_connection_init ) {
 808                         (*backends[i].be_connection_init)( &backends[i], conn);
 809                 }
 810         }
 811
 812         return 0;
 813 }
 814
 815 int
 816 backend_connection_destroy(
 817         Connection   *conn
 818 )
 819 {
 820         int     i;
 821
 822         for ( i = 0; i < nbackends; i++ ) {
 823                 if ( backends[i].be_connection_destroy ) {
 824                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 825                 }
 826         }
 827
 828         return 0;
 829 }
 830
 831 static int
 832 backend_check_controls(
 833         Operation *op,
 834         SlapReply *rs )
 835 {
 836         LDAPControl **ctrls = op->o_ctrls;
 837         rs->sr_err = LDAP_SUCCESS;
 838
 839         if( ctrls ) {
 840                 for( ; *ctrls != NULL ; ctrls++ ) {
 841                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 842                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 843                         {
 844                                 rs->sr_text = "control unavailable in context";
 845                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 846                                 break;
 847                         }
 848                 }
 849         }
 850
 851         return rs->sr_err;
 852 }
 853
 854 int
 855 backend_check_restrictions(
 856         Operation *op,
 857         SlapReply *rs,
 858         struct berval *opdata )
 859 {
 860         slap_mask_t restrictops;
 861         slap_mask_t requires;
 862         slap_mask_t opflag;
 863         slap_ssf_set_t *ssf;
 864         int updateop = 0;
 865         int starttls = 0;
 866         int session = 0;
 867
 868         if( op->o_bd ) {
 869                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 870                         return rs->sr_err;
 871                 }
 872
 873                 restrictops = op->o_bd->be_restrictops;
 874                 requires = op->o_bd->be_requires;
 875                 ssf = &op->o_bd->be_ssf_set;
 876
 877         } else {
 878                 restrictops = global_restrictops;
 879                 requires = global_requires;
 880                 ssf = &global_ssf_set;
 881         }
 882
 883         switch( op->o_tag ) {
 884         case LDAP_REQ_ADD:
 885                 opflag = SLAP_RESTRICT_OP_ADD;
 886                 updateop++;
 887                 break;
 888         case LDAP_REQ_BIND:
 889                 opflag = SLAP_RESTRICT_OP_BIND;
 890                 session++;
 891                 break;
 892         case LDAP_REQ_COMPARE:
 893                 opflag = SLAP_RESTRICT_OP_COMPARE;
 894                 break;
 895         case LDAP_REQ_DELETE:
 896                 updateop++;
 897                 opflag = SLAP_RESTRICT_OP_DELETE;
 898                 break;
 899         case LDAP_REQ_EXTENDED:
 900                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 901
 902                 if( !opdata ) {
 903                         /* treat unspecified as a modify */
 904                         opflag = SLAP_RESTRICT_OP_MODIFY;
 905                         updateop++;
 906                         break;
 907                 }
 908
 909                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 910                         session++;
 911                         starttls++;
 912                         break;
 913                 }
 914
 915                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 916                         break;
 917                 }
 918
 919                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 920                         break;
 921                 }
 922
 923                 /* treat everything else as a modify */
 924                 opflag = SLAP_RESTRICT_OP_MODIFY;
 925                 updateop++;
 926                 break;
 927
 928         case LDAP_REQ_MODIFY:
 929                 updateop++;
 930                 opflag = SLAP_RESTRICT_OP_MODIFY;
 931                 break;
 932         case LDAP_REQ_RENAME:
 933                 updateop++;
 934                 opflag = SLAP_RESTRICT_OP_RENAME;
 935                 break;
 936         case LDAP_REQ_SEARCH:
 937                 opflag = SLAP_RESTRICT_OP_SEARCH;
 938                 break;
 939         case LDAP_REQ_UNBIND:
 940                 session++;
 941                 opflag = 0;
 942                 break;
 943         default:
 944                 rs->sr_text = "restrict operations internal error";
 945                 rs->sr_err = LDAP_OTHER;
 946                 return rs->sr_err;
 947         }
 948
 949         if ( !starttls ) {
 950                 /* these checks don't apply to StartTLS */
 951
 952                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 953                 if( op->o_transport_ssf < ssf->sss_transport ) {
 954                         rs->sr_text = "transport confidentiality required";
 955                         return rs->sr_err;
 956                 }
 957
 958                 if( op->o_tls_ssf < ssf->sss_tls ) {
 959                         rs->sr_text = "TLS confidentiality required";
 960                         return rs->sr_err;
 961                 }
 962
 963
 964                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 965                         /* simple bind specific check */
 966                         if( op->o_ssf < ssf->sss_simple_bind ) {
 967                                 rs->sr_text = "confidentiality required";
 968                                 return rs->sr_err;
 969                         }
 970                 }
 971
 972                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 973                         /* these checks don't apply to SASL bind */
 974
 975                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 976                                 rs->sr_text = "SASL confidentiality required";
 977                                 return rs->sr_err;
 978                         }
 979
 980                         if( op->o_ssf < ssf->sss_ssf ) {
 981                                 rs->sr_text = "confidentiality required";
 982                                 return rs->sr_err;
 983                         }
 984                 }
 985
 986                 if( updateop ) {
 987                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 988                                 rs->sr_text = "transport update confidentiality required";
 989                                 return rs->sr_err;
 990                         }
 991
 992                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
 993                                 rs->sr_text = "TLS update confidentiality required";
 994                                 return rs->sr_err;
 995                         }
 996
 997                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
 998                                 rs->sr_text = "SASL update confidentiality required";
 999                                 return rs->sr_err;
1000                         }
1001
1002                         if( op->o_ssf < ssf->sss_update_ssf ) {
1003                                 rs->sr_text = "update confidentiality required";
1004                                 return rs->sr_err;
1005                         }
1006
1007                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1008                                 op->o_ndn.bv_len == 0 )
1009                         {
1010                                 rs->sr_text = "modifications require authentication";
1011                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1012                                 return rs->sr_err;
1013                         }
1014
1015 #ifdef SLAP_X_LISTENER_MOD
1016                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1017                                 /* no "w" mode means readonly */
1018                                 rs->sr_text = "modifications not allowed on this listener";
1019                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1020                                 return rs->sr_err;
1021                         }
1022 #endif /* SLAP_X_LISTENER_MOD */
1023                 }
1024         }
1025
1026         if ( !session ) {
1027                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1028
1029                 if( requires & SLAP_REQUIRE_STRONG ) {
1030                         /* should check mechanism */
1031                         if( ( op->o_transport_ssf < ssf->sss_transport
1032                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1033                                 || op->o_dn.bv_len == 0 )
1034                         {
1035                                 rs->sr_text = "strong(er) authentication required";
1036                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1037                                 return rs->sr_err;
1038                         }
1039                 }
1040
1041                 if( requires & SLAP_REQUIRE_SASL ) {
1042                         if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) {
1043                                 rs->sr_text = "SASL authentication required";
1044                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1045                                 return rs->sr_err;
1046                         }
1047                 }
1048
1049                 if( requires & SLAP_REQUIRE_AUTHC ) {
1050                         if( op->o_dn.bv_len == 0 ) {
1051                                 rs->sr_text = "authentication required";
1052                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1053                                 return rs->sr_err;
1054                         }
1055                 }
1056
1057                 if( requires & SLAP_REQUIRE_BIND ) {
1058                         int version;
1059                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1060                         version = op->o_conn->c_protocol;
1061                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1062
1063                         if( !version ) {
1064                                 /* no bind has occurred */
1065                                 rs->sr_text = "BIND required";
1066                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1067                                 return rs->sr_err;
1068                         }
1069                 }
1070
1071                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1072                         if( op->o_protocol < LDAP_VERSION3 ) {
1073                                 /* no bind has occurred */
1074                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1075                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1076                                 return rs->sr_err;
1077                         }
1078                 }
1079
1080 #ifdef SLAP_X_LISTENER_MOD
1081                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1082                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1083                                 /* no "x" mode means bind required */
1084                                 rs->sr_text = "bind required on this listener";
1085                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1086                                 return rs->sr_err;
1087                         }
1088                 }
1089
1090                 if ( !starttls && !updateop ) {
1091                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1092                                 /* no "r" mode means no read */
1093                                 rs->sr_text = "read not allowed on this listener";
1094                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1095                                 return rs->sr_err;
1096                         }
1097                 }
1098 #endif /* SLAP_X_LISTENER_MOD */
1099
1100         }
1101
1102         if( restrictops & opflag ) {
1103                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1104                         rs->sr_text = "read operations restricted";
1105                 } else {
1106                         rs->sr_text = "operation restricted";
1107                 }
1108                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1109                 return rs->sr_err;
1110         }
1111
1112         rs->sr_err = LDAP_SUCCESS;
1113         return rs->sr_err;
1114 }
1115
1116 int backend_check_referrals( Operation *op, SlapReply *rs )
1117 {
1118         rs->sr_err = LDAP_SUCCESS;
1119
1120         if( op->o_bd->be_chk_referrals ) {
1121                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1122
1123                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1124                         send_ldap_result( op, rs );
1125                 }
1126         }
1127
1128         return rs->sr_err;
1129 }
1130
1131 int
1132 be_entry_get_rw(
1133         Operation *op,
1134         struct berval *ndn,
1135         ObjectClass *oc,
1136         AttributeDescription *at,
1137         int rw,
1138         Entry **e )
1139 {
1140         int rc;
1141
1142         *e = NULL;
1143
1144         if (op->o_bd == NULL) {
1145                 rc = LDAP_NO_SUCH_OBJECT;
1146         } else if ( op->o_bd->be_fetch ) {
1147                 rc = ( op->o_bd->be_fetch )( op, ndn,
1148                         oc, at, rw, e );
1149         } else {
1150                 rc = LDAP_UNWILLING_TO_PERFORM;
1151         }
1152         return rc;
1153 }
1154
1155 int
1156 backend_group(
1157         Operation *op,
1158         Entry   *target,
1159         struct berval *gr_ndn,
1160         struct berval *op_ndn,
1161         ObjectClass *group_oc,
1162         AttributeDescription *group_at
1163 )
1164 {
1165         Entry *e;
1166         Attribute *a;
1167         int rc;
1168         GroupAssertion *g;
1169         Backend *be = op->o_bd;
1170
1171         if ( op->o_abandon ) return SLAPD_ABANDON;
1172
1173         op->o_bd = select_backend( gr_ndn, 0, 0 );
1174
1175         for (g = op->o_groups; g; g=g->ga_next) {
1176                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1177                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1178                         continue;
1179                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1180                         break;
1181         }
1182
1183         if (g) {
1184                 rc = g->ga_res;
1185                 goto done;
1186         }
1187
1188         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1189                 e = target;
1190                 rc = 0;
1191         } else {
1192                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1193         }
1194         if ( e ) {
1195                 a = attr_find( e->e_attrs, group_at );
1196                 if ( a ) {
1197                         /* If the attribute is a subtype of labeledURI, treat this as
1198                          * a dynamic group ala groupOfURLs
1199                          */
1200                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1201                                 int i;
1202                                 LDAPURLDesc *ludp;
1203                                 struct berval bv, nbase;
1204                                 Filter *filter;
1205                                 Entry *user;
1206                                 Backend *b2 = op->o_bd;
1207
1208                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1209                                         user = target;
1210                                 } else {
1211                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1212                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1213                                 }
1214
1215                                 if ( rc == 0 ) {
1216                                         rc = 1;
1217                                         for (i=0; a->a_vals[i].bv_val; i++) {
1218                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1219                                                         continue;
1220                                                 nbase.bv_val = NULL;
1221                                                 /* host part must be empty */
1222                                                 /* attrs and extensions parts must be empty */
1223                                                 if (( ludp->lud_host && *ludp->lud_host )
1224                                                         || ludp->lud_attrs || ludp->lud_exts )
1225                                                         goto loopit;
1226                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1227                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1228                                                         goto loopit;
1229                                                 switch(ludp->lud_scope) {
1230                                                 case LDAP_SCOPE_BASE:
1231                                                         if ( !dn_match( &nbase, op_ndn )) goto loopit;
1232                                                         break;
1233                                                 case LDAP_SCOPE_ONELEVEL:
1234                                                         dnParent(op_ndn, &bv );
1235                                                         if ( !dn_match( &nbase, &bv )) goto loopit;
1236                                                         break;
1237                                                 case LDAP_SCOPE_SUBTREE:
1238                                                         if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit;
1239                                                         break;
1240                                                 case LDAP_SCOPE_SUBORDINATE:
1241                                                         if ( dn_match( &nbase, op_ndn ) &&
1242                                                                 !dnIsSuffix(op_ndn, &nbase ))
1243                                                         {
1244                                                                 goto loopit;
1245                                                         }
1246                                                 }
1247                                                 filter = str2filter_x( op, ludp->lud_filter );
1248                                                 if ( filter ) {
1249                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1250                                                         {
1251                                                                 rc = 0;
1252                                                         }
1253                                                         filter_free_x( op, filter );
1254                                                 }
1255         loopit:
1256                                                 ldap_free_urldesc( ludp );
1257                                                 if ( nbase.bv_val ) {
1258                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1259                                                 }
1260                                                 if ( rc == 0 ) break;
1261                                         }
1262                                         if ( user != target ) {
1263                                                 be_entry_release_r( op, user );
1264                                         }
1265                                 }
1266                                 op->o_bd = b2;
1267                         } else {
1268                                 rc = value_find_ex( group_at,
1269                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1270                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1271                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1272                         }
1273                 } else {
1274                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1275                 }
1276                 if (e != target ) {
1277                         be_entry_release_r( op, e );
1278                 }
1279         } else {
1280                 rc = LDAP_NO_SUCH_OBJECT;
1281         }
1282
1283         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1284                 g = sl_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len, op->o_tmpmemctx);
1285                 g->ga_be = op->o_bd;
1286                 g->ga_oc = group_oc;
1287                 g->ga_at = group_at;
1288                 g->ga_res = rc;
1289                 g->ga_len = gr_ndn->bv_len;
1290                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1291                 g->ga_next = op->o_groups;
1292                 op->o_groups = g;
1293         }
1294 done:
1295         op->o_bd = be;
1296         return rc;
1297 }
1298
1299 int
1300 backend_attribute(
1301         Operation *op,
1302         Entry   *target,
1303         struct berval   *edn,
1304         AttributeDescription *entry_at,
1305         BerVarray *vals
1306 )
1307 {
1308         Entry *e;
1309         Attribute *a;
1310         int i, j, rc = LDAP_SUCCESS;
1311         AccessControlState acl_state = ACL_STATE_INIT;
1312         Backend *be = op->o_bd;
1313
1314         op->o_bd = select_backend( edn, 0, 0 );
1315
1316         if ( target && dn_match( &target->e_nname, edn ) ) {
1317                 e = target;
1318         } else {
1319                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1320         }
1321
1322         if ( e ) {
1323                 a = attr_find( e->e_attrs, entry_at );
1324                 if ( a ) {
1325                         BerVarray v;
1326
1327                         if ( op->o_conn && access_allowed( op,
1328                                 e, entry_at, NULL, ACL_AUTH,
1329                                 &acl_state ) == 0 ) {
1330                                 rc = LDAP_INSUFFICIENT_ACCESS;
1331                                 goto freeit;
1332                         }
1333
1334                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1335
1336                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1337                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1338                                 if ( op->o_conn && access_allowed( op,
1339                                         e, entry_at,
1340                                         &a->a_nvals[i],
1341                                         ACL_AUTH, &acl_state ) == 0 ) {
1342                                         continue;
1343                                 }
1344                                 ber_dupbv_x( &v[j],
1345                                         &a->a_nvals[i], op->o_tmpmemctx );
1346                                 if (v[j].bv_val ) j++;
1347                         }
1348                         if (j == 0) {
1349                                 op->o_tmpfree( v, op->o_tmpmemctx );
1350                                 *vals = NULL;
1351                                 rc = LDAP_INSUFFICIENT_ACCESS;
1352                         } else {
1353                                 v[j].bv_val = NULL;
1354                                 v[j].bv_len = 0;
1355                                 *vals = v;
1356                                 rc = LDAP_SUCCESS;
1357                         }
1358                 }
1359 freeit:         if (e != target ) {
1360                         be_entry_release_r( op, e );
1361                 }
1362         }
1363
1364         op->o_bd = be;
1365         return rc;
1366 }
1367
1368 Attribute *backend_operational(
1369         Operation *op,
1370         SlapReply *rs,
1371         int opattrs     )
1372 {
1373         Attribute *a = NULL, **ap = &a;
1374
1375         /*
1376          * If operational attributes (allegedly) are required,
1377          * and the backend supports specific operational attributes,
1378          * add them to the attribute list
1379          */
1380         if ( opattrs || ( op->ors_attrs &&
1381                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1382                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1383                 ap = &(*ap)->a_next;
1384         }
1385
1386         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1387                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1388         }
1389
1390         return a;
1391 }
1392