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