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( Backend *be,
 635         Connection *conn,
 636         struct berval *ndn,
 637         struct berval *cred )
 638 {
 639         int result;
 640
 641         if ( ! be_isroot( be, ndn ) ) {
 642                 return 0;
 643         }
 644
 645         if( be->be_rootpw.bv_len == 0 ) {
 646                 return 0;
 647         }
 648
 649 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 650         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 651 #ifdef SLAPD_SPASSWD
 652         lutil_passwd_sasl_conn = conn->c_sasl_context;
 653 #endif
 654 #endif
 655
 656         result = lutil_passwd( &be->be_rootpw, cred, NULL );
 657
 658 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 659 #ifdef SLAPD_SPASSWD
 660         lutil_passwd_sasl_conn = NULL;
 661 #endif
 662         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 663 #endif
 664
 665         return result == 0;
 666 }
 667
 668 int
 669 be_entry_release_rw(
 670         BackendDB *be,
 671         Connection *conn,
 672         Operation *op,
 673         Entry *e,
 674         int rw )
 675 {
 676         if ( be->be_release ) {
 677                 /* free and release entry from backend */
 678                 return be->be_release( be, conn, op, e, rw );
 679         } else {
 680                 /* free entry */
 681                 entry_free( e );
 682                 return 0;
 683         }
 684 }
 685
 686 int
 687 backend_unbind(
 688         Connection   *conn,
 689         Operation    *op
 690 )
 691 {
 692         int             i;
 693 #if defined( LDAP_SLAPI )
 694         Slapi_PBlock *pb = op->o_pb;
 695
 696         int     rc;
 697         slapi_x_connection_set_pb( pb, conn );
 698         slapi_x_operation_set_pb( pb, op );
 699 #endif /* defined( LDAP_SLAPI ) */
 700
 701         for ( i = 0; i < nbackends; i++ ) {
 702 #if defined( LDAP_SLAPI )
 703                 slapi_pblock_set( pb, SLAPI_BACKEND, (void *)&backends[i] );
 704                 rc = doPluginFNs( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN,
 705                                 (Slapi_PBlock *)pb );
 706                 if ( rc != 0 ) {
 707                         /*
 708                          * A preoperation plugin failure will abort the
 709                          * entire operation.
 710                          */
 711 #ifdef NEW_LOGGING
 712                         LDAP_LOG( OPERATION, INFO, "do_bind: Unbind preoperation plugin "
 713                                         "failed\n", 0, 0, 0);
 714 #else
 715                         Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin "
 716                                         "failed.\n", 0, 0, 0);
 717 #endif
 718                         return 0;
 719                 }
 720 #endif /* defined( LDAP_SLAPI ) */
 721
 722                 if ( backends[i].be_unbind ) {
 723                         (*backends[i].be_unbind)( &backends[i], conn, op );
 724                 }
 725
 726 #if defined( LDAP_SLAPI )
 727                 if ( doPluginFNs( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN,
 728                                 (Slapi_PBlock *)pb ) != 0 ) {
 729 #ifdef NEW_LOGGING
 730                         LDAP_LOG( OPERATION, INFO, "do_unbind: Unbind postoperation plugins "
 731                                         "failed\n", 0, 0, 0);
 732 #else
 733                         Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins "
 734                                         "failed.\n", 0, 0, 0);
 735 #endif
 736                 }
 737 #endif /* defined( LDAP_SLAPI ) */
 738         }
 739
 740         return 0;
 741 }
 742
 743 int
 744 backend_connection_init(
 745         Connection   *conn
 746 )
 747 {
 748         int     i;
 749
 750         for ( i = 0; i < nbackends; i++ ) {
 751                 if ( backends[i].be_connection_init ) {
 752                         (*backends[i].be_connection_init)( &backends[i], conn);
 753                 }
 754         }
 755
 756         return 0;
 757 }
 758
 759 int
 760 backend_connection_destroy(
 761         Connection   *conn
 762 )
 763 {
 764         int     i;
 765
 766         for ( i = 0; i < nbackends; i++ ) {
 767                 if ( backends[i].be_connection_destroy ) {
 768                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 769                 }
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int
 776 backend_check_controls(
 777         Backend *be,
 778         Connection *conn,
 779         Operation *op,
 780         const char **text )
 781 {
 782         LDAPControl **ctrls = op->o_ctrls;
 783
 784         if( ctrls == NULL ) return LDAP_SUCCESS;
 785
 786         for( ; *ctrls != NULL ; ctrls++ ) {
 787                 if( (*ctrls)->ldctl_iscritical &&
 788                         !ldap_charray_inlist( be->be_controls, (*ctrls)->ldctl_oid ) )
 789                 {
 790                         *text = "control unavailable in context";
 791                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 792                 }
 793         }
 794
 795         return LDAP_SUCCESS;
 796 }
 797
 798 int
 799 backend_check_restrictions(
 800         Backend *be,
 801         Connection *conn,
 802         Operation *op,
 803         struct berval *opdata,
 804         const char **text )
 805 {
 806         int rc;
 807         slap_mask_t restrictops;
 808         slap_mask_t requires;
 809         slap_mask_t opflag;
 810         slap_ssf_set_t *ssf;
 811         int updateop = 0;
 812         int starttls = 0;
 813         int session = 0;
 814
 815         if( be ) {
 816                 rc = backend_check_controls( be, conn, op, text );
 817
 818                 if( rc != LDAP_SUCCESS ) {
 819                         return rc;
 820                 }
 821
 822                 restrictops = be->be_restrictops;
 823                 requires = be->be_requires;
 824                 ssf = &be->be_ssf_set;
 825
 826         } else {
 827                 restrictops = global_restrictops;
 828                 requires = global_requires;
 829                 ssf = &global_ssf_set;
 830         }
 831
 832         switch( op->o_tag ) {
 833         case LDAP_REQ_ADD:
 834                 opflag = SLAP_RESTRICT_OP_ADD;
 835                 updateop++;
 836                 break;
 837         case LDAP_REQ_BIND:
 838                 opflag = SLAP_RESTRICT_OP_BIND;
 839                 session++;
 840                 break;
 841         case LDAP_REQ_COMPARE:
 842                 opflag = SLAP_RESTRICT_OP_COMPARE;
 843                 break;
 844         case LDAP_REQ_DELETE:
 845                 updateop++;
 846                 opflag = SLAP_RESTRICT_OP_DELETE;
 847                 break;
 848         case LDAP_REQ_EXTENDED:
 849                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 850
 851                 if( !opdata ) {
 852                         /* treat unspecified as a modify */
 853                         opflag = SLAP_RESTRICT_OP_MODIFY;
 854                         updateop++;
 855                         break;
 856                 }
 857
 858                 {
 859                         if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 860                                 session++;
 861                                 starttls++;
 862                                 break;
 863                         }
 864                 }
 865
 866                 {
 867                         if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 868                                 break;
 869                         }
 870                 }
 871
 872 #ifdef LDAP_EXOP_X_CANCEL
 873                 {
 874                         if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 875                                 break;
 876                         }
 877                 }
 878 #endif
 879
 880                 /* treat everything else as a modify */
 881                 opflag = SLAP_RESTRICT_OP_MODIFY;
 882                 updateop++;
 883                 break;
 884
 885         case LDAP_REQ_MODIFY:
 886                 updateop++;
 887                 opflag = SLAP_RESTRICT_OP_MODIFY;
 888                 break;
 889         case LDAP_REQ_RENAME:
 890                 updateop++;
 891                 opflag = SLAP_RESTRICT_OP_RENAME;
 892                 break;
 893         case LDAP_REQ_SEARCH:
 894                 opflag = SLAP_RESTRICT_OP_SEARCH;
 895                 break;
 896         case LDAP_REQ_UNBIND:
 897                 session++;
 898                 opflag = 0;
 899                 break;
 900         default:
 901                 *text = "restrict operations internal error";
 902                 return LDAP_OTHER;
 903         }
 904
 905         if ( !starttls ) {
 906                 /* these checks don't apply to StartTLS */
 907
 908                 if( op->o_transport_ssf < ssf->sss_transport ) {
 909                         *text = "transport confidentiality required";
 910                         return LDAP_CONFIDENTIALITY_REQUIRED;
 911                 }
 912
 913                 if( op->o_tls_ssf < ssf->sss_tls ) {
 914                         *text = "TLS confidentiality required";
 915                         return LDAP_CONFIDENTIALITY_REQUIRED;
 916                 }
 917
 918
 919                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
 920                         /* simple bind specific check */
 921                         if( op->o_ssf < ssf->sss_simple_bind ) {
 922                                 *text = "confidentiality required";
 923                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 924                         }
 925                 }
 926
 927                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 928                         /* these checks don't apply to SASL bind */
 929
 930                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 931                                 *text = "SASL confidentiality required";
 932                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 933                         }
 934
 935                         if( op->o_ssf < ssf->sss_ssf ) {
 936                                 *text = "confidentiality required";
 937                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 938                         }
 939                 }
 940
 941                 if( updateop ) {
 942                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 943                                 *text = "transport update confidentiality required";
 944                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 945                         }
 946
 947                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
 948                                 *text = "TLS update confidentiality required";
 949                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 950                         }
 951
 952                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
 953                                 *text = "SASL update confidentiality required";
 954                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 955                         }
 956
 957                         if( op->o_ssf < ssf->sss_update_ssf ) {
 958                                 *text = "update confidentiality required";
 959                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 960                         }
 961
 962                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
 963                                 op->o_ndn.bv_len == 0 )
 964                         {
 965                                 *text = "modifications require authentication";
 966                                 return LDAP_STRONG_AUTH_REQUIRED;
 967                         }
 968
 969 #ifdef SLAP_X_LISTENER_MOD
 970                         if ( ! ( conn->c_listener->sl_perms & S_IWUSR ) ) {
 971                                 /* no "w" mode means readonly */
 972                                 *text = "modifications not allowed on this listener";
 973                                 return LDAP_UNWILLING_TO_PERFORM;
 974                         }
 975 #endif /* SLAP_X_LISTENER_MOD */
 976                 }
 977         }
 978
 979         if ( !session ) {
 980                 /* these checks don't apply to Bind, StartTLS, or Unbind */
 981
 982                 if( requires & SLAP_REQUIRE_STRONG ) {
 983                         /* should check mechanism */
 984                         if( ( op->o_transport_ssf < ssf->sss_transport
 985                                 && op->o_authmech.bv_len == 0 ) || op->o_dn.bv_len == 0 )
 986                         {
 987                                 *text = "strong authentication required";
 988                                 return LDAP_STRONG_AUTH_REQUIRED;
 989                         }
 990                 }
 991
 992                 if( requires & SLAP_REQUIRE_SASL ) {
 993                         if( op->o_authmech.bv_len == 0 || op->o_dn.bv_len == 0 ) {
 994                                 *text = "SASL authentication required";
 995                                 return LDAP_STRONG_AUTH_REQUIRED;
 996                         }
 997                 }
 998
 999                 if( requires & SLAP_REQUIRE_AUTHC ) {
1000                         if( op->o_dn.bv_len == 0 ) {
1001                                 *text = "authentication required";
1002                                 return LDAP_UNWILLING_TO_PERFORM;
1003                         }
1004                 }
1005
1006                 if( requires & SLAP_REQUIRE_BIND ) {
1007                         int version;
1008                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1009                         version = conn->c_protocol;
1010                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1011
1012                         if( !version ) {
1013                                 /* no bind has occurred */
1014                                 *text = "BIND required";
1015                                 return LDAP_OPERATIONS_ERROR;
1016                         }
1017                 }
1018
1019                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1020                         if( op->o_protocol < LDAP_VERSION3 ) {
1021                                 /* no bind has occurred */
1022                                 *text = "operation restricted to LDAPv3 clients";
1023                                 return LDAP_OPERATIONS_ERROR;
1024                         }
1025                 }
1026
1027 #ifdef SLAP_X_LISTENER_MOD
1028                 if ( !starttls && op->o_dn.bv_len == 0 ) {
1029                         if ( ! ( conn->c_listener->sl_perms & S_IXUSR ) ) {
1030                                 /* no "x" mode means bind required */
1031                                 *text = "bind required on this listener";
1032                                 return LDAP_STRONG_AUTH_REQUIRED;
1033                         }
1034                 }
1035
1036                 if ( !starttls && !updateop ) {
1037                         if ( ! ( conn->c_listener->sl_perms & S_IRUSR ) ) {
1038                                 /* no "r" mode means no read */
1039                                 *text = "read not allowed on this listener";
1040                                 return LDAP_UNWILLING_TO_PERFORM;
1041                         }
1042                 }
1043 #endif /* SLAP_X_LISTENER_MOD */
1044
1045         }
1046
1047         if( restrictops & opflag ) {
1048                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
1049                         *text = "read operations restricted";
1050                 } else {
1051                         *text = "operation restricted";
1052                 }
1053                 return LDAP_UNWILLING_TO_PERFORM;
1054         }
1055
1056         return LDAP_SUCCESS;
1057 }
1058
1059 int backend_check_referrals(
1060         Backend *be,
1061         Connection *conn,
1062         Operation *op,
1063         struct berval *dn,
1064         struct berval *ndn )
1065 {
1066         int rc = LDAP_SUCCESS;
1067
1068         if( be->be_chk_referrals ) {
1069                 const char *text;
1070
1071                 rc = be->be_chk_referrals( be,
1072                         conn, op, dn, ndn, &text );
1073
1074                 if( rc != LDAP_SUCCESS && rc != LDAP_REFERRAL ) {
1075                         send_ldap_result( conn, op, rc,
1076                                 NULL, text, NULL, NULL );
1077                 }
1078         }
1079
1080         return rc;
1081 }
1082
1083 int
1084 backend_group(
1085         Backend *be,
1086         Connection *conn,
1087         Operation *op,
1088         Entry   *target,
1089         struct berval *gr_ndn,
1090         struct berval *op_ndn,
1091         ObjectClass *group_oc,
1092         AttributeDescription *group_at
1093 )
1094 {
1095         GroupAssertion *g;
1096
1097         if ( op->o_abandon ) return SLAPD_ABANDON;
1098
1099         if ( !dn_match( &target->e_nname, gr_ndn ) ) {
1100                 /* we won't attempt to send it to a different backend */
1101
1102                 be = select_backend( gr_ndn, 0, 0 );
1103
1104                 if (be == NULL) {
1105                         return LDAP_NO_SUCH_OBJECT;
1106                 }
1107         }
1108
1109         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1110
1111         for (g = conn->c_groups; g; g=g->ga_next) {
1112                 if (g->ga_be != be || g->ga_oc != group_oc ||
1113                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
1114                         continue;
1115                 if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
1116                         break;
1117         }
1118
1119         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1120
1121         if (g) {
1122                 return g->ga_res;
1123         }
1124
1125         if( be->be_group ) {
1126                 int res = be->be_group( be, conn, op,
1127                         target, gr_ndn, op_ndn,
1128                         group_oc, group_at );
1129
1130                 if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1131                         g = ch_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len);
1132                         g->ga_be = be;
1133                         g->ga_oc = group_oc;
1134                         g->ga_at = group_at;
1135                         g->ga_res = res;
1136                         g->ga_len = gr_ndn->bv_len;
1137                         strcpy(g->ga_ndn, gr_ndn->bv_val);
1138                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1139                         g->ga_next = conn->c_groups;
1140                         conn->c_groups = g;
1141                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1142                 }
1143
1144                 return res;
1145         }
1146
1147         return LDAP_UNWILLING_TO_PERFORM;
1148 }
1149
1150 int
1151 backend_attribute(
1152         Backend *be,
1153         Connection *conn,
1154         Operation *op,
1155         Entry   *target,
1156         struct berval   *edn,
1157         AttributeDescription *entry_at,
1158         BerVarray *vals
1159 )
1160 {
1161         if ( target == NULL || !dn_match( &target->e_nname, edn ) ) {
1162                 /* we won't attempt to send it to a different backend */
1163
1164                 be = select_backend( edn, 0, 0 );
1165
1166                 if (be == NULL) {
1167                         return LDAP_NO_SUCH_OBJECT;
1168                 }
1169         }
1170
1171         if( be->be_attribute ) {
1172                 return be->be_attribute( be, conn, op, target, edn,
1173                         entry_at, vals );
1174         }
1175
1176         return LDAP_UNWILLING_TO_PERFORM;
1177 }
1178
1179 Attribute *backend_operational(
1180         Backend *be,
1181         Connection *conn,
1182         Operation *op,
1183         Entry *e,
1184         AttributeName *attrs,
1185         int opattrs     )
1186 {
1187         Attribute *a = NULL, **ap = &a;
1188
1189         /*
1190          * If operational attributes (allegedly) are required,
1191          * and the backend supports specific operational attributes,
1192          * add them to the attribute list
1193          */
1194         if ( opattrs || ( attrs &&
1195                 ad_inlist( slap_schema.si_ad_subschemaSubentry, attrs )) ) {
1196                 *ap = slap_operational_subschemaSubentry( be );
1197                 ap = &(*ap)->a_next;
1198         }
1199
1200         if ( ( opattrs || attrs ) && be && be->be_operational != NULL ) {
1201                 ( void )be->be_operational( be, conn, op, e, attrs, opattrs, ap );
1202         }
1203
1204         return a;
1205 }
1206