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