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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /* backend.c - routines for dealing with back-end databases */
   7
   8
   9 #include "portable.h"
  10
  11 #include <stdio.h>
  12
  13 #include <ac/string.h>
  14 #include <ac/socket.h>
  15 #include <sys/stat.h>
  16
  17 #include "slap.h"
  18 #include "lutil.h"
  19 #include "lber_pvt.h"
  20
  21 #include "ldap_rq.h"
  22
  23 #ifdef LDAP_SLAPI
  24 #include "slapi.h"
  25 #endif
  26
  27 /*
  28  * If a module is configured as dynamic, its header should not
  29  * get included into slapd. While this is a general rule and does
  30  * not have much of an effect in UNIX, this rule should be adhered
  31  * to for Windows, where dynamic object code should not be implicitly
  32  * imported into slapd without appropriate __declspec(dllimport) directives.
  33  */
  34
  35 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  36 #include "back-bdb/external.h"
  37 #endif
  38 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  39 #include "back-dnssrv/external.h"
  40 #endif
  41 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  42 #include "back-hdb/external.h"
  43 #endif
  44 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  45 #include "back-ldap/external.h"
  46 #endif
  47 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  48 #include "back-ldbm/external.h"
  49 #endif
  50 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  51 #include "back-meta/external.h"
  52 #endif
  53 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  54 #include "back-monitor/external.h"
  55 #endif
  56 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
  57 #include "back-null/external.h"
  58 #endif
  59 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  60 #include "back-passwd/external.h"
  61 #endif
  62 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  63 #include "back-perl/external.h"
  64 #endif
  65 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  66 #include "back-shell/external.h"
  67 #endif
  68 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  69 #include "back-tcl/external.h"
  70 #endif
  71 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  72 #include "back-sql/external.h"
  73 #endif
  74 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
  75 #include "private/external.h"
  76 #endif
  77
  78 static BackendInfo binfo[] = {
  79 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  80         {"bdb", bdb_initialize},
  81 #endif
  82 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  83         {"dnssrv",      dnssrv_back_initialize},
  84 #endif
  85 #if defined(SLAPD_HDB) && !defined(SLAPD_HDB_DYNAMIC)
  86         {"hdb", hdb_initialize},
  87 #endif
  88 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  89         {"ldap",        ldap_back_initialize},
  90 #endif
  91 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  92         {"ldbm",        ldbm_back_initialize},
  93 #endif
  94 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  95         {"meta",        meta_back_initialize},
  96 #endif
  97 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  98         {"monitor",     monitor_back_initialize},
  99 #endif
 100 #if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
 101         {"null",        null_back_initialize},
 102 #endif
 103 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 104         {"passwd",      passwd_back_initialize},
 105 #endif
 106 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 107         {"perl",        perl_back_initialize},
 108 #endif
 109 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 110         {"shell",       shell_back_initialize},
 111 #endif
 112 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 113         {"tcl",         tcl_back_initialize},
 114 #endif
 115 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
 116         {"sql",         sql_back_initialize},
 117 #endif
 118         /* for any private backend */
 119 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
 120         {"private",     private_back_initialize},
 121 #endif
 122         {NULL}
 123 };
 124
 125 int                     nBackendInfo = 0;
 126 BackendInfo     *backendInfo = NULL;
 127
 128 int                     nBackendDB = 0;
 129 BackendDB       *backendDB = NULL;
 130
 131 ldap_pvt_thread_pool_t  syncrepl_pool;
 132 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
 133
 134 int backend_init(void)
 135 {
 136         int rc = -1;
 137
 138         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
 139
 140         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 141                 /* already initialized */
 142 #ifdef NEW_LOGGING
 143                 LDAP_LOG( BACKEND, ERR,
 144                         "backend_init:  backend already initialized\n", 0, 0, 0 );
 145 #else
 146                 Debug( LDAP_DEBUG_ANY,
 147                         "backend_init: already initialized.\n", 0, 0, 0 );
 148 #endif
 149                 return -1;
 150         }
 151
 152         for( ;
 153                 binfo[nBackendInfo].bi_type != NULL;
 154                 nBackendInfo++ )
 155         {
 156                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 157
 158                 if(rc != 0) {
 159 #ifdef NEW_LOGGING
 160                         LDAP_LOG( BACKEND, INFO,
 161                                 "backend_init:  initialized for type \"%s\"\n",
 162                                 binfo[nBackendInfo].bi_type, 0, 0 );
 163 #else
 164                         Debug( LDAP_DEBUG_ANY,
 165                                 "backend_init: initialized for type \"%s\"\n",
 166                                 binfo[nBackendInfo].bi_type, 0, 0 );
 167 #endif
 168                         /* destroy those we've already inited */
 169                         for( nBackendInfo--;
 170                                 nBackendInfo >= 0 ;
 171                                 nBackendInfo-- )
 172                         {
 173                                 if ( binfo[nBackendInfo].bi_destroy ) {
 174                                         binfo[nBackendInfo].bi_destroy(
 175                                                 &binfo[nBackendInfo] );
 176                                 }
 177                         }
 178                         return rc;
 179                 }
 180         }
 181
 182         if ( nBackendInfo > 0) {
 183                 backendInfo = binfo;
 184                 return 0;
 185         }
 186
 187 #ifdef SLAPD_MODULES
 188         return 0;
 189 #else
 190
 191 #ifdef NEW_LOGGING
 192         LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
 193 #else
 194         Debug( LDAP_DEBUG_ANY,
 195                 "backend_init: failed\n",
 196                 0, 0, 0 );
 197 #endif
 198
 199         return rc;
 200 #endif /* SLAPD_MODULES */
 201 }
 202
 203 int backend_add(BackendInfo *aBackendInfo)
 204 {
 205    int rc = 0;
 206
 207    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 208 #ifdef NEW_LOGGING
 209         LDAP_LOG( BACKEND, ERR,
 210                   "backend_add:  initialization for type \"%s\" failed\n",
 211                   aBackendInfo->bi_type, 0, 0 );
 212 #else
 213       Debug( LDAP_DEBUG_ANY,
 214              "backend_add: initialization for type \"%s\" failed\n",
 215              aBackendInfo->bi_type, 0, 0 );
 216 #endif
 217       return rc;
 218    }
 219
 220    /* now add the backend type to the Backend Info List */
 221    {
 222       BackendInfo *newBackendInfo = 0;
 223
 224       /* if backendInfo == binfo no deallocation of old backendInfo */
 225       if (backendInfo == binfo) {
 226          newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 227          AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
 228                 nBackendInfo);
 229       } else {
 230          newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
 231                                      (nBackendInfo + 1));
 232       }
 233       AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 234              sizeof(BackendInfo));
 235       backendInfo = newBackendInfo;
 236       nBackendInfo++;
 237
 238       return 0;
 239    }
 240 }
 241
 242 int backend_startup(Backend *be)
 243 {
 244         int i;
 245         int rc = 0;
 246
 247         init_syncrepl();
 248
 249         if( ! ( nBackendDB > 0 ) ) {
 250                 /* no databases */
 251 #ifdef NEW_LOGGING
 252                 LDAP_LOG( BACKEND, INFO,
 253                         "backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
 254 #else
 255                 Debug( LDAP_DEBUG_ANY,
 256                         "backend_startup: %d databases to startup.\n",
 257                         nBackendDB, 0, 0 );
 258 #endif
 259                 return 1;
 260         }
 261
 262         if(be != NULL) {
 263                 /* startup a specific backend database */
 264
 265                 LDAP_TAILQ_INIT( &be->be_pending_csn_list );
 266
 267 #ifdef NEW_LOGGING
 268                 LDAP_LOG( BACKEND, DETAIL1, "backend_startup:  starting \"%s\"\n",
 269                            be->be_suffix[0].bv_val, 0, 0 );
 270 #else
 271                 Debug( LDAP_DEBUG_TRACE,
 272                         "backend_startup: starting \"%s\"\n",
 273                         be->be_suffix[0].bv_val, 0, 0 );
 274 #endif
 275
 276                 if ( be->bd_info->bi_open ) {
 277                         rc = be->bd_info->bi_open( be->bd_info );
 278                         if ( rc != 0 ) {
 279 #ifdef NEW_LOGGING
 280                                 LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
 281 #else
 282                                 Debug( LDAP_DEBUG_ANY,
 283                                         "backend_startup: bi_open failed!\n",
 284                                         0, 0, 0 );
 285 #endif
 286
 287                                 return rc;
 288                         }
 289                 }
 290
 291                 if ( be->bd_info->bi_db_open ) {
 292                         rc = be->bd_info->bi_db_open( be );
 293                         if ( rc != 0 ) {
 294 #ifdef NEW_LOGGING
 295                                 LDAP_LOG( BACKEND, CRIT,
 296                                         "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
 297 #else
 298                                 Debug( LDAP_DEBUG_ANY,
 299                                         "backend_startup: bi_db_open failed! (%d)\n",
 300                                         rc, 0, 0 );
 301 #endif
 302                                 return rc;
 303                         }
 304                 }
 305
 306                 return rc;
 307         }
 308
 309         /* open each backend type */
 310         for( i = 0; i < nBackendInfo; i++ ) {
 311                 if( backendInfo[i].bi_nDB == 0) {
 312                         /* no database of this type, don't open */
 313                         continue;
 314                 }
 315
 316                 if( backendInfo[i].bi_open ) {
 317                         rc = backendInfo[i].bi_open(
 318                                 &backendInfo[i] );
 319                         if ( rc != 0 ) {
 320 #ifdef NEW_LOGGING
 321                                 LDAP_LOG( BACKEND, CRIT,
 322                                         "backend_startup: bi_open %d failed!\n", i, 0, 0 );
 323 #else
 324                                 Debug( LDAP_DEBUG_ANY,
 325                                         "backend_startup: bi_open %d failed!\n",
 326                                         i, 0, 0 );
 327 #endif
 328                                 return rc;
 329                         }
 330                 }
 331         }
 332
 333         ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex );
 334         LDAP_STAILQ_INIT( &syncrepl_rq.task_list );
 335         LDAP_STAILQ_INIT( &syncrepl_rq.run_list );
 336
 337         /* open each backend database */
 338         for( i = 0; i < nBackendDB; i++ ) {
 339                 /* append global access controls */
 340                 acl_append( &backendDB[i].be_acl, global_acl );
 341
 342                 LDAP_TAILQ_INIT( &backendDB[i].be_pending_csn_list );
 343
 344                 if ( backendDB[i].bd_info->bi_db_open ) {
 345                         rc = backendDB[i].bd_info->bi_db_open(
 346                                 &backendDB[i] );
 347                         if ( rc != 0 ) {
 348 #ifdef NEW_LOGGING
 349                                 LDAP_LOG( BACKEND, CRIT,
 350                                         "backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
 351 #else
 352                                 Debug( LDAP_DEBUG_ANY,
 353                                         "backend_startup: bi_db_open(%d) failed! (%d)\n",
 354                                         i, rc, 0 );
 355 #endif
 356                                 return rc;
 357                         }
 358                 }
 359
 360                 if ( backendDB[i].syncinfo != NULL ) {
 361                         syncinfo_t *si = ( syncinfo_t * ) backendDB[i].syncinfo;
 362                         si->be = &backendDB[i];
 363                         ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
 364                         ldap_pvt_runqueue_insert( &syncrepl_rq, si->interval,
 365                                                         do_syncrepl, (void *) backendDB[i].syncinfo );
 366                         ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 367                 }
 368         }
 369
 370         return rc;
 371 }
 372
 373 int backend_num( Backend *be )
 374 {
 375         int i;
 376
 377         if( be == NULL ) return -1;
 378
 379         for( i = 0; i < nBackendDB; i++ ) {
 380                 if( be == &backendDB[i] ) return i;
 381         }
 382         return -1;
 383 }
 384
 385 int backend_shutdown( Backend *be )
 386 {
 387         int i;
 388         int rc = 0;
 389
 390         if( be != NULL ) {
 391                 /* shutdown a specific backend database */
 392
 393                 if ( be->bd_info->bi_nDB == 0 ) {
 394                         /* no database of this type, we never opened it */
 395                         return 0;
 396                 }
 397
 398                 if ( be->bd_info->bi_db_close ) {
 399                         be->bd_info->bi_db_close( be );
 400                 }
 401
 402                 if( be->bd_info->bi_close ) {
 403                         be->bd_info->bi_close( be->bd_info );
 404                 }
 405
 406                 return 0;
 407         }
 408
 409         /* close each backend database */
 410         for( i = 0; i < nBackendDB; i++ ) {
 411                 if ( backendDB[i].bd_info->bi_db_close ) {
 412                         backendDB[i].bd_info->bi_db_close(
 413                                 &backendDB[i] );
 414                 }
 415
 416                 if(rc != 0) {
 417 #ifdef NEW_LOGGING
 418                         LDAP_LOG( BACKEND, NOTICE,
 419                                 "backend_shutdown: bi_close %s failed!\n",
 420                                 backendDB[i].be_type, 0, 0 );
 421 #else
 422                         Debug( LDAP_DEBUG_ANY,
 423                                 "backend_close: bi_close %s failed!\n",
 424                                 backendDB[i].be_type, 0, 0 );
 425 #endif
 426                 }
 427         }
 428
 429         /* close each backend type */
 430         for( i = 0; i < nBackendInfo; i++ ) {
 431                 if( backendInfo[i].bi_nDB == 0 ) {
 432                         /* no database of this type */
 433                         continue;
 434                 }
 435
 436                 if( backendInfo[i].bi_close ) {
 437                         backendInfo[i].bi_close(
 438                                 &backendInfo[i] );
 439                 }
 440         }
 441
 442         return 0;
 443 }
 444
 445 int backend_destroy(void)
 446 {
 447         int i;
 448         BackendDB *bd;
 449
 450         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 451
 452         /* destroy each backend database */
 453         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 454                 if ( bd->bd_info->bi_db_destroy ) {
 455                         bd->bd_info->bi_db_destroy( bd );
 456                 }
 457                 ber_bvarray_free( bd->be_suffix );
 458                 ber_bvarray_free( bd->be_nsuffix );
 459                 if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
 460                 if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
 461                 if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
 462                 acl_destroy( bd->be_acl, global_acl );
 463         }
 464         free( backendDB );
 465
 466         /* destroy each backend type */
 467         for( i = 0; i < nBackendInfo; i++ ) {
 468                 if( backendInfo[i].bi_destroy ) {
 469                         backendInfo[i].bi_destroy(
 470                                 &backendInfo[i] );
 471                 }
 472         }
 473
 474 #ifdef SLAPD_MODULES
 475         if (backendInfo != binfo) {
 476            free(backendInfo);
 477         }
 478 #endif /* SLAPD_MODULES */
 479
 480         nBackendInfo = 0;
 481         backendInfo = NULL;
 482
 483         return 0;
 484 }
 485
 486 BackendInfo* backend_info(const char *type)
 487 {
 488         int i;
 489
 490         /* search for the backend type */
 491         for( i = 0; i < nBackendInfo; i++ ) {
 492                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 493                         return &backendInfo[i];
 494                 }
 495         }
 496
 497         return NULL;
 498 }
 499
 500
 501 BackendDB *
 502 backend_db_init(
 503     const char  *type
 504 )
 505 {
 506         Backend *be;
 507         BackendInfo *bi = backend_info(type);
 508         int     rc = 0;
 509
 510         if( bi == NULL ) {
 511                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 512                 return NULL;
 513         }
 514
 515         backendDB = (BackendDB *) ch_realloc(
 516                         (char *) backendDB,
 517                     (nBackendDB + 1) * sizeof(Backend) );
 518
 519         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 520
 521         be = &backends[nbackends++];
 522
 523         be->bd_info = bi;
 524         be->be_def_limit = deflimit;
 525         be->be_dfltaccess = global_default_access;
 526
 527         be->be_restrictops = global_restrictops;
 528         be->be_requires = global_requires;
 529         be->be_ssf_set = global_ssf_set;
 530
 531         be->be_context_csn.bv_len = 0;
 532         be->be_context_csn.bv_val = NULL;
 533         ldap_pvt_thread_mutex_init( &be->be_pcl_mutex );
 534         ldap_pvt_thread_mutex_init( &be->be_context_csn_mutex );
 535
 536         be->syncinfo = NULL;
 537
 538         /* assign a default depth limit for alias deref */
 539         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 540
 541         if(bi->bi_db_init) {
 542                 rc = bi->bi_db_init( be );
 543         }
 544
 545         if(rc != 0) {
 546                 fprintf( stderr, "database init failed (%s)\n", type );
 547                 nbackends--;
 548                 return NULL;
 549         }
 550
 551         bi->bi_nDB++;
 552         return( be );
 553 }
 554
 555 void
 556 be_db_close( void )
 557 {
 558         int     i;
 559
 560         for ( i = 0; i < nbackends; i++ ) {
 561                 if ( backends[i].bd_info->bi_db_close ) {
 562                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 563                 }
 564         }
 565 }
 566
 567 Backend *
 568 select_backend(
 569         struct berval * dn,
 570         int manageDSAit,
 571         int noSubs )
 572 {
 573         int     i, j;
 574         ber_len_t len, dnlen = dn->bv_len;
 575         Backend *be = NULL;
 576
 577         for ( i = 0; i < nbackends; i++ ) {
 578                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 579                     backends[i].be_nsuffix[j].bv_val != NULL; j++ )
 580                 {
 581                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 582                                 && noSubs )
 583                         {
 584                                 continue;
 585                         }
 586
 587                         len = backends[i].be_nsuffix[j].bv_len;
 588
 589                         if ( len > dnlen ) {
 590                                 /* suffix is longer than DN */
 591                                 continue;
 592                         }
 593
 594                         /*
 595                          * input DN is normalized, so the separator check
 596                          * need not look at escaping
 597                          */
 598                         if ( len && len < dnlen &&
 599                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 600                         {
 601                                 continue;
 602                         }
 603
 604                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 605                                 &dn->bv_val[dnlen-len] ) == 0 )
 606                         {
 607                                 if( be == NULL ) {
 608                                         be = &backends[i];
 609
 610                                         if( manageDSAit && len == dnlen ) {
 611                                                 continue;
 612                                         }
 613                                 } else {
 614                                         be = &backends[i];
 615                                 }
 616                                 return be;
 617                         }
 618                 }
 619         }
 620
 621         return be;
 622 }
 623
 624 int
 625 be_issuffix(
 626     Backend     *be,
 627     struct berval       *bvsuffix
 628 )
 629 {
 630         int     i;
 631
 632         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
 633                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 634                         return( 1 );
 635                 }
 636         }
 637
 638         return( 0 );
 639 }
 640
 641 int
 642 be_isroot( Backend *be, struct berval *ndn )
 643 {
 644         if ( !ndn->bv_len ) {
 645                 return( 0 );
 646         }
 647
 648         if ( !be->be_rootndn.bv_len ) {
 649                 return( 0 );
 650         }
 651
 652         return dn_match( &be->be_rootndn, ndn );
 653 }
 654
 655 int
 656 be_isupdate( Backend *be, struct berval *ndn )
 657 {
 658         if ( !ndn->bv_len ) {
 659                 return( 0 );
 660         }
 661
 662         if ( !be->be_update_ndn.bv_len ) {
 663                 return( 0 );
 664         }
 665
 666         return dn_match( &be->be_update_ndn, ndn );
 667 }
 668
 669 struct berval *
 670 be_root_dn( Backend *be )
 671 {
 672         return &be->be_rootdn;
 673 }
 674
 675 int
 676 be_isroot_pw( Operation *op )
 677 {
 678         int result;
 679         char *errmsg;
 680
 681         if ( ! be_isroot( op->o_bd, &op->o_req_ndn ) ) {
 682                 return 0;
 683         }
 684
 685         if( op->o_bd->be_rootpw.bv_len == 0 ) {
 686                 return 0;
 687         }
 688
 689 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 690         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 691 #ifdef SLAPD_SPASSWD
 692         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 693 #endif
 694 #endif
 695
 696         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 697
 698 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 699 #ifdef SLAPD_SPASSWD
 700         lutil_passwd_sasl_conn = NULL;
 701 #endif
 702         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 703 #endif
 704
 705         return result == 0;
 706 }
 707
 708 int
 709 be_entry_release_rw(
 710         Operation *op,
 711         Entry *e,
 712         int rw )
 713 {
 714         if ( op->o_bd->be_release ) {
 715                 /* free and release entry from backend */
 716                 return op->o_bd->be_release( op, e, rw );
 717         } else {
 718                 /* free entry */
 719                 entry_free( e );
 720                 return 0;
 721         }
 722 }
 723
 724 int
 725 backend_unbind( Operation *op, SlapReply *rs )
 726 {
 727         int             i;
 728 #if defined( LDAP_SLAPI )
 729         Slapi_PBlock *pb = op->o_pb;
 730
 731         int     rc;
 732         slapi_x_pblock_set_operation( pb, op );
 733 #endif /* defined( LDAP_SLAPI ) */
 734
 735         for ( i = 0; i < nbackends; i++ ) {
 736 #if defined( LDAP_SLAPI )
 737                 slapi_pblock_set( pb, SLAPI_BACKEND, (void *)&backends[i] );
 738                 rc = doPluginFNs( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 739                                 (Slapi_PBlock *)pb );
 740                 if ( rc < 0 ) {
 741                         /*
 742                          * A preoperation plugin failure will abort the
 743                          * entire operation.
 744                          */
 745 #ifdef NEW_LOGGING
 746                         LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 747                                         "failed\n", 0, 0, 0);
 748 #else
 749                         Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 750                                         "failed.\n", 0, 0, 0);
 751 #endif
 752                         return 0;
 753                 }
 754 #endif /* defined( LDAP_SLAPI ) */
 755
 756                 if ( backends[i].be_unbind ) {
 757                         op->o_bd = &backends[i];
 758                         (*backends[i].be_unbind)( op, rs );
 759                 }
 760
 761 #if defined( LDAP_SLAPI )
 762                 if ( doPluginFNs( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 763                                 (Slapi_PBlock *)pb ) < 0 ) {
 764 #ifdef NEW_LOGGING
 765                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 766                                         "failed\n", 0, 0, 0);
 767 #else
 768                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 769                                         "failed.\n", 0, 0, 0);
 770 #endif
 771                 }
 772 #endif /* defined( LDAP_SLAPI ) */
 773         }
 774
 775         return 0;
 776 }
 777
 778 int
 779 backend_connection_init(
 780         Connection   *conn
 781 )
 782 {
 783         int     i;
 784
 785         for ( i = 0; i < nbackends; i++ ) {
 786                 if ( backends[i].be_connection_init ) {
 787                         (*backends[i].be_connection_init)( &backends[i], conn);
 788                 }
 789         }
 790
 791         return 0;
 792 }
 793
 794 int
 795 backend_connection_destroy(
 796         Connection   *conn
 797 )
 798 {
 799         int     i;
 800
 801         for ( i = 0; i < nbackends; i++ ) {
 802                 if ( backends[i].be_connection_destroy ) {
 803                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 804                 }
 805         }
 806
 807         return 0;
 808 }
 809
 810 static int
 811 backend_check_controls(
 812         Operation *op,
 813         SlapReply *rs )
 814 {
 815         LDAPControl **ctrls = op->o_ctrls;
 816         rs->sr_err = LDAP_SUCCESS;
 817
 818         if( ctrls ) {
 819                 for( ; *ctrls != NULL ; ctrls++ ) {
 820                         if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist(
 821                                 op->o_bd->be_controls, (*ctrls)->ldctl_oid ) )
 822                         {
 823                                 rs->sr_text = "control unavailable in context";
 824                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 825                                 break;
 826                         }
 827                 }
 828         }
 829
 830         return rs->sr_err;
 831 }
 832
 833 int
 834 backend_check_restrictions(
 835         Operation *op,
 836         SlapReply *rs,
 837         struct berval *opdata )
 838 {
 839         slap_mask_t restrictops;
 840         slap_mask_t requires;
 841         slap_mask_t opflag;
 842         slap_ssf_set_t *ssf;
 843         int updateop = 0;
 844         int starttls = 0;
 845         int session = 0;
 846
 847         if( op->o_bd ) {
 848                 if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) {
 849                         return rs->sr_err;
 850                 }
 851
 852                 restrictops = op->o_bd->be_restrictops;
 853                 requires = op->o_bd->be_requires;
 854                 ssf = &op->o_bd->be_ssf_set;
 855
 856         } else {
 857                 restrictops = global_restrictops;
 858                 requires = global_requires;
 859                 ssf = &global_ssf_set;
 860         }
 861
 862         switch( op->o_tag ) {
 863         case LDAP_REQ_ADD:
 864                 opflag = SLAP_RESTRICT_OP_ADD;
 865                 updateop++;
 866                 break;
 867         case LDAP_REQ_BIND:
 868                 opflag = SLAP_RESTRICT_OP_BIND;
 869                 session++;
 870                 break;
 871         case LDAP_REQ_COMPARE:
 872                 opflag = SLAP_RESTRICT_OP_COMPARE;
 873                 break;
 874         case LDAP_REQ_DELETE:
 875                 updateop++;
 876                 opflag = SLAP_RESTRICT_OP_DELETE;
 877                 break;
 878         case LDAP_REQ_EXTENDED:
 879                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 880
 881                 if( !opdata ) {
 882                         /* treat unspecified as a modify */
 883                         opflag = SLAP_RESTRICT_OP_MODIFY;
 884                         updateop++;
 885                         break;
 886                 }
 887
 888                 {
 889                         if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 890                                 session++;
 891                                 starttls++;
 892                                 break;
 893                         }
 894                 }
 895
 896                 {
 897                         if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 898                                 break;
 899                         }
 900                 }
 901
 902 #ifdef LDAP_EXOP_X_CANCEL
 903                 {
 904                         if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 905                                 break;
 906                         }
 907                 }
 908 #endif
 909
 910                 /* treat everything else as a modify */
 911                 opflag = SLAP_RESTRICT_OP_MODIFY;
 912                 updateop++;
 913                 break;
 914
 915         case LDAP_REQ_MODIFY:
 916                 updateop++;
 917                 opflag = SLAP_RESTRICT_OP_MODIFY;
 918                 break;
 919         case LDAP_REQ_RENAME:
 920                 updateop++;
 921                 opflag = SLAP_RESTRICT_OP_RENAME;
 922                 break;
 923         case LDAP_REQ_SEARCH:
 924                 opflag = SLAP_RESTRICT_OP_SEARCH;
 925                 break;
 926         case LDAP_REQ_UNBIND:
 927                 session++;
 928                 opflag = 0;
 929                 break;
 930         default:
 931                 rs->sr_text = "restrict operations internal error";
 932                 rs->sr_err = LDAP_OTHER;
 933                 return rs->sr_err;
 934         }
 935
 936         if ( !starttls ) {
 937                 /* these checks don't apply to StartTLS */
 938
 939                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 940                 if( op->o_transport_ssf < ssf->sss_transport ) {
 941                         rs->sr_text = "transport confidentiality required";
 942                         return rs->sr_err;
 943                 }
 944
 945                 if( op->o_tls_ssf < ssf->sss_tls ) {
 946                         rs->sr_text = "TLS confidentiality required";
 947                         return rs->sr_err;
 948                 }
 949
 950
 951                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 952                         /* simple bind specific check */
 953                         if( op->o_ssf < ssf->sss_simple_bind ) {
 954                                 rs->sr_text = "confidentiality required";
 955                                 return rs->sr_err;
 956                         }
 957                 }
 958
 959                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 960                         /* these checks don't apply to SASL bind */
 961
 962                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 963                                 rs->sr_text = "SASL confidentiality required";
 964                                 return rs->sr_err;
 965                         }
 966
 967                         if( op->o_ssf < ssf->sss_ssf ) {
 968                                 rs->sr_text = "confidentiality required";
 969                                 return rs->sr_err;
 970                         }
 971                 }
 972
 973                 if( updateop ) {
 974                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 975                                 rs->sr_text = "transport update confidentiality required";
 976                                 return rs->sr_err;
 977                         }
 978
 979                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
 980                                 rs->sr_text = "TLS update confidentiality required";
 981                                 return rs->sr_err;
 982                         }
 983
 984                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
 985                                 rs->sr_text = "SASL update confidentiality required";
 986                                 return rs->sr_err;
 987                         }
 988
 989                         if( op->o_ssf < ssf->sss_update_ssf ) {
 990                                 rs->sr_text = "update confidentiality required";
 991                                 return rs->sr_err;
 992                         }
 993
 994                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
 995                                 op->o_ndn.bv_len == 0 )
 996                         {
 997                                 rs->sr_text = "modifications require authentication";
 998                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
 999                                 return rs->sr_err;
1000                         }
1001
1002 #ifdef SLAP_X_LISTENER_MOD
1003                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) {
1004                                 /* no "w" mode means readonly */
1005                                 rs->sr_text = "modifications not allowed on this listener";
1006                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1007                                 return rs->sr_err;
1008                         }
1009 #endif /* SLAP_X_LISTENER_MOD */
1010                 }
1011         }
1012
1013         if ( !session ) {
1014                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1015
1016                 if( requires & SLAP_REQUIRE_STRONG ) {
1017                         /* should check mechanism */
1018                         if( ( op->o_transport_ssf < ssf->sss_transport
1019                                 && op->o_authmech.bv_len == 0 ) || op->o_dn.bv_len == 0 )
1020                         {
1021                                 rs->sr_text = "strong authentication required";
1022                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1023                                 return rs->sr_err;
1024                         }
1025                 }
1026
1027                 if( requires & SLAP_REQUIRE_SASL ) {
1028                         if( op->o_authmech.bv_len == 0 || op->o_dn.bv_len == 0 ) {
1029                                 rs->sr_text = "SASL authentication required";
1030                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1031                                 return rs->sr_err;
1032                         }
1033                 }
1034
1035                 if( requires & SLAP_REQUIRE_AUTHC ) {
1036                         if( op->o_dn.bv_len == 0 ) {
1037                                 rs->sr_text = "authentication required";
1038                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1039                                 return rs->sr_err;
1040                         }
1041                 }
1042
1043                 if( requires & SLAP_REQUIRE_BIND ) {
1044                         int version;
1045                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1046                         version = op->o_conn->c_protocol;
1047                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1048
1049                         if( !version ) {
1050                                 /* no bind has occurred */
1051                                 rs->sr_text = "BIND required";
1052                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1053                                 return rs->sr_err;
1054                         }
1055                 }
1056
1057                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1058                         if( op->o_protocol < LDAP_VERSION3 ) {
1059                                 /* no bind has occurred */
1060                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1061                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1062                                 return rs->sr_err;
1063                         }
1064                 }
1065
1066 #ifdef SLAP_X_LISTENER_MOD
1067                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1068                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & S_IXOTH ) ) {
1069                                 /* no "x" mode means bind required */
1070                                 rs->sr_text = "bind required on this listener";
1071                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1072                                 return rs->sr_err;
1073                         }
1074                 }
1075
1076                 if ( !starttls && !updateop ) {
1077                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ) ) ) {
1078                                 /* no "r" mode means no read */
1079                                 rs->sr_text = "read not allowed on this listener";
1080                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1081                                 return rs->sr_err;
1082                         }
1083                 }
1084 #endif /* SLAP_X_LISTENER_MOD */
1085
1086         }
1087
1088         if( restrictops & opflag ) {
1089                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1090                         rs->sr_text = "read operations restricted";
1091                 } else {
1092                         rs->sr_text = "operation restricted";
1093                 }
1094                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1095                 return rs->sr_err;
1096         }
1097
1098         rs->sr_err = LDAP_SUCCESS;
1099         return rs->sr_err;
1100 }
1101
1102 int backend_check_referrals( Operation *op, SlapReply *rs )
1103 {
1104         rs->sr_err = LDAP_SUCCESS;
1105
1106         if( op->o_bd->be_chk_referrals ) {
1107                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1108
1109                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1110                         send_ldap_result( op, rs );
1111                 }
1112         }
1113
1114         return rs->sr_err;
1115 }
1116
1117 int
1118 be_entry_get_rw(
1119         Operation *op,
1120         struct berval *ndn,
1121         ObjectClass *oc,
1122         AttributeDescription *at,
1123         int rw,
1124         Entry **e )
1125 {
1126         int rc;
1127
1128         *e = NULL;
1129
1130         if (op->o_bd == NULL) {
1131                 rc = LDAP_NO_SUCH_OBJECT;
1132         } else if ( op->o_bd->be_fetch ) {
1133                 rc = ( op->o_bd->be_fetch )( op, ndn,
1134                         oc, at, rw, e );
1135         } else {
1136                 rc = LDAP_UNWILLING_TO_PERFORM;
1137         }
1138         return rc;
1139 }
1140
1141 int
1142 backend_group(
1143         Operation *op,
1144         Entry   *target,
1145         struct berval *gr_ndn,
1146         struct berval *op_ndn,
1147         ObjectClass *group_oc,
1148         AttributeDescription *group_at
1149 )
1150 {
1151         Entry *e;
1152         Attribute *a;
1153         int rc;
1154         GroupAssertion *g;
1155         Backend *be = op->o_bd;
1156
1157         if ( op->o_abandon ) return SLAPD_ABANDON;
1158
1159         op->o_bd = select_backend( gr_ndn, 0, 0 );
1160
1161         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1162
1163         for (g = op->o_conn->c_groups; g; g=g->ga_next) {
1164                 if (g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1165                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1166                         continue;
1167                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1168                         break;
1169         }
1170
1171         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1172
1173         if (g) {
1174                 rc = g->ga_res;
1175                 goto done;
1176         }
1177
1178         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1179                 e = target;
1180         } else {
1181                 rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e );
1182         }
1183         if ( e ) {
1184                 a = attr_find( e->e_attrs, group_at );
1185                 if ( a ) {
1186                         /* If the attribute is a subtype of labeledURI, treat this as
1187                          * a dynamic group ala groupOfURLs
1188                          */
1189                         if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1190                                 int i;
1191                                 LDAPURLDesc *ludp;
1192                                 struct berval bv, nbase;
1193                                 Filter *filter;
1194                                 Entry *user;
1195                                 Backend *b2 = op->o_bd;
1196
1197                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1198                                         user = target;
1199                                 } else {
1200                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1201                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1202                                 }
1203
1204                                 if ( rc == 0 ) {
1205                                         rc = 1;
1206                                         for (i=0; a->a_vals[i].bv_val; i++) {
1207                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS )
1208                                                         continue;
1209                                                 nbase.bv_val = NULL;
1210                                                 /* host part must be empty */
1211                                                 /* attrs and extensions parts must be empty */
1212                                                 if (( ludp->lud_host && *ludp->lud_host )
1213                                                         || ludp->lud_attrs || ludp->lud_exts )
1214                                                         goto loopit;
1215                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1216                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS )
1217                                                         goto loopit;
1218                                                 switch(ludp->lud_scope) {
1219                                                 case LDAP_SCOPE_BASE:
1220                                                         if ( !dn_match(&nbase, op_ndn)) goto loopit;
1221                                                         break;
1222                                                 case LDAP_SCOPE_ONELEVEL:
1223                                                         dnParent(op_ndn, &bv );
1224                                                         if ( !dn_match(&nbase, &bv)) goto loopit;
1225                                                         break;
1226                                                 case LDAP_SCOPE_SUBTREE:
1227                                                         if ( !dnIsSuffix(op_ndn, &nbase)) goto loopit;
1228                                                         break;
1229                                                 }
1230                                                 filter = str2filter_x( op, ludp->lud_filter );
1231                                                 if ( filter ) {
1232                                                         if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE )
1233                                                         {
1234                                                                 rc = 0;
1235                                                         }
1236                                                         filter_free_x( op, filter );
1237                                                 }
1238         loopit:
1239                                                 ldap_free_urldesc( ludp );
1240                                                 if ( nbase.bv_val ) {
1241                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1242                                                 }
1243                                                 if ( rc == 0 ) break;
1244                                         }
1245                                         if ( user != target ) {
1246                                                 be_entry_release_r( op, user );
1247                                         }
1248                                 }
1249                                 op->o_bd = b2;
1250                         } else {
1251                                 rc = value_find_ex( group_at,
1252                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1253                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1254                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1255                         }
1256                 } else {
1257                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1258                 }
1259                 if (e != target ) {
1260                         be_entry_release_r( op, e );
1261                 }
1262         } else {
1263                 rc = LDAP_NO_SUCH_OBJECT;
1264         }
1265
1266         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1267                 g = ch_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len);
1268                 g->ga_be = op->o_bd;
1269                 g->ga_oc = group_oc;
1270                 g->ga_at = group_at;
1271                 g->ga_res = rc;
1272                 g->ga_len = gr_ndn->bv_len;
1273                 strcpy(g->ga_ndn, gr_ndn->bv_val);
1274                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1275                 g->ga_next = op->o_conn->c_groups;
1276                 op->o_conn->c_groups = g;
1277                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1278         }
1279 done:
1280         op->o_bd = be;
1281         return rc;
1282 }
1283
1284 int
1285 backend_attribute(
1286         Operation *op,
1287         Entry   *target,
1288         struct berval   *edn,
1289         AttributeDescription *entry_at,
1290         BerVarray *vals
1291 )
1292 {
1293         Entry *e;
1294         Attribute *a;
1295         int i, j, rc = LDAP_SUCCESS;
1296         AccessControlState acl_state = ACL_STATE_INIT;
1297         Backend *be = op->o_bd;
1298
1299         op->o_bd = select_backend( edn, 0, 0 );
1300
1301         if ( target && dn_match( &target->e_nname, edn ) ) {
1302                 e = target;
1303         } else {
1304                 rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e );
1305         }
1306
1307         if ( e ) {
1308                 a = attr_find( e->e_attrs, entry_at );
1309                 if ( a ) {
1310                         BerVarray v;
1311
1312                         if ( op->o_conn && access_allowed( op,
1313                                 e, entry_at, NULL, ACL_AUTH,
1314                                 &acl_state ) == 0 ) {
1315                                 rc = LDAP_INSUFFICIENT_ACCESS;
1316                                 goto freeit;
1317                         }
1318
1319                         for ( i=0; a->a_vals[i].bv_val; i++ ) ;
1320
1321                         v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx );
1322                         for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) {
1323                                 if ( op->o_conn && access_allowed( op,
1324                                         e, entry_at,
1325                                         &a->a_nvals[i],
1326                                         ACL_AUTH, &acl_state ) == 0 ) {
1327                                         continue;
1328                                 }
1329                                 ber_dupbv_x( &v[j],
1330                                         &a->a_nvals[i], op->o_tmpmemctx );
1331                                 if (v[j].bv_val ) j++;
1332                         }
1333                         if (j == 0) {
1334                                 op->o_tmpfree( v, op->o_tmpmemctx );
1335                                 *vals = NULL;
1336                                 rc = LDAP_INSUFFICIENT_ACCESS;
1337                         } else {
1338                                 v[j].bv_val = NULL;
1339                                 v[j].bv_len = 0;
1340                                 *vals = v;
1341                                 rc = LDAP_SUCCESS;
1342                         }
1343                 }
1344 freeit:         if (e != target ) {
1345                         be_entry_release_r( op, e );
1346                 }
1347         }
1348
1349         op->o_bd = be;
1350         return rc;
1351 }
1352
1353 Attribute *backend_operational(
1354         Operation *op,
1355         SlapReply *rs,
1356         int opattrs     )
1357 {
1358         Attribute *a = NULL, **ap = &a;
1359
1360         /*
1361          * If operational attributes (allegedly) are required,
1362          * and the backend supports specific operational attributes,
1363          * add them to the attribute list
1364          */
1365         if ( opattrs || ( op->ors_attrs &&
1366                 ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs )) ) {
1367                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1368                 ap = &(*ap)->a_next;
1369         }
1370
1371         if ( ( opattrs || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) {
1372                 ( void )op->o_bd->be_operational( op, rs, opattrs, ap );
1373         }
1374
1375         return a;
1376 }
1377