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