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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 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
  16 #include <sys/stat.h>
  17
  18 #include "slap.h"
  19 #include "lutil.h"
  20
  21 /*
  22  * If a module is configured as dynamic, its header should not
  23  * get included into slapd. While this is a general rule and does
  24  * not have much of an effect in UNIX, this rule should be adhered
  25  * to for Windows, where dynamic object code should not be implicitly
  26  * imported into slapd without appropriate __declspec(dllimport) directives.
  27  */
  28
  29 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  30 #include "back-bdb/external.h"
  31 #endif
  32 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  33 #include "back-dnssrv/external.h"
  34 #endif
  35 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  36 #include "back-ldap/external.h"
  37 #endif
  38 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  39 #include "back-ldbm/external.h"
  40 #endif
  41 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  42 #include "back-meta/external.h"
  43 #endif
  44 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  45 #include "back-monitor/external.h"
  46 #endif
  47 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  48 #include "back-passwd/external.h"
  49 #endif
  50 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  51 #include "back-perl/external.h"
  52 #endif
  53 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  54 #include "back-shell/external.h"
  55 #endif
  56 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  57 #include "back-tcl/external.h"
  58 #endif
  59 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  60 #include "back-sql/external.h"
  61 #endif
  62 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
  63 #include "private/external.h"
  64 #endif
  65
  66 static BackendInfo binfo[] = {
  67 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
  68         {"bdb", bdb_initialize},
  69 #endif
  70 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
  71         {"dnssrv",      dnssrv_back_initialize},
  72 #endif
  73 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
  74         {"ldap",        ldap_back_initialize},
  75 #endif
  76 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
  77         {"ldbm",        ldbm_back_initialize},
  78 #endif
  79 #if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
  80         {"meta",        meta_back_initialize},
  81 #endif
  82 #if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
  83         {"monitor",     monitor_back_initialize},
  84 #endif
  85 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
  86         {"passwd",      passwd_back_initialize},
  87 #endif
  88 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
  89         {"perl",        perl_back_initialize},
  90 #endif
  91 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
  92         {"shell",       shell_back_initialize},
  93 #endif
  94 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
  95         {"tcl",         tcl_back_initialize},
  96 #endif
  97 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
  98         {"sql",         sql_back_initialize},
  99 #endif
 100         /* for any private backend */
 101 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
 102         {"private",     private_back_initialize},
 103 #endif
 104         {"glue",        glue_back_initialize},
 105         {NULL}
 106 };
 107
 108 int                     nBackendInfo = 0;
 109 BackendInfo     *backendInfo = NULL;
 110
 111 int                     nBackendDB = 0;
 112 BackendDB       *backendDB = NULL;
 113
 114 int backend_init(void)
 115 {
 116         int rc = -1;
 117
 118         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 119                 /* already initialized */
 120 #ifdef NEW_LOGGING
 121                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 122                            "backend_init:  backend already initialized\n" ));
 123 #else
 124                 Debug( LDAP_DEBUG_ANY,
 125                         "backend_init: already initialized.\n", 0, 0, 0 );
 126 #endif
 127                 return -1;
 128         }
 129
 130         for( ;
 131                 binfo[nBackendInfo].bi_type != NULL;
 132                 nBackendInfo++ )
 133         {
 134                 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 135
 136                 if(rc != 0) {
 137 #ifdef NEW_LOGGING
 138                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 139                                 "backend_init:  initialized for type \"%s\"\n",
 140                                 binfo[nBackendInfo].bi_type ));
 141 #else
 142                         Debug( LDAP_DEBUG_ANY,
 143                                 "backend_init: initialized for type \"%s\"\n",
 144                                 binfo[nBackendInfo].bi_type, 0, 0 );
 145 #endif
 146                         /* destroy those we've already inited */
 147                         for( nBackendInfo--;
 148                                 nBackendInfo >= 0 ;
 149                                 nBackendInfo-- )
 150                         {
 151                                 if ( binfo[nBackendInfo].bi_destroy ) {
 152                                         binfo[nBackendInfo].bi_destroy(
 153                                                 &binfo[nBackendInfo] );
 154                                 }
 155                         }
 156                         return rc;
 157                 }
 158         }
 159
 160         if ( nBackendInfo > 0) {
 161                 backendInfo = binfo;
 162                 return 0;
 163         }
 164
 165 #ifdef SLAPD_MODULES
 166         return 0;
 167 #else
 168
 169 #ifdef NEW_LOGGING
 170         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 171                 "backend_init: failed\n" ));
 172 #else
 173         Debug( LDAP_DEBUG_ANY,
 174                 "backend_init: failed\n",
 175                 0, 0, 0 );
 176 #endif
 177
 178         return rc;
 179 #endif /* SLAPD_MODULES */
 180 }
 181
 182 int backend_add(BackendInfo *aBackendInfo)
 183 {
 184    int rc = 0;
 185
 186    if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
 187 #ifdef NEW_LOGGING
 188        LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 189                   "backend_add:  initialization for type \"%s\" failed\n",
 190                   aBackendInfo->bi_type ));
 191 #else
 192       Debug( LDAP_DEBUG_ANY,
 193              "backend_add: initialization for type \"%s\" failed\n",
 194              aBackendInfo->bi_type, 0, 0 );
 195 #endif
 196       return rc;
 197    }
 198
 199    /* now add the backend type to the Backend Info List */
 200    {
 201       BackendInfo *newBackendInfo = 0;
 202
 203       /* if backendInfo == binfo no deallocation of old backendInfo */
 204       if (backendInfo == binfo) {
 205          newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 206          AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
 207                 nBackendInfo);
 208       } else {
 209          newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
 210                                      (nBackendInfo + 1));
 211       }
 212       AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 213              sizeof(BackendInfo));
 214       backendInfo = newBackendInfo;
 215       nBackendInfo++;
 216
 217       return 0;
 218    }
 219 }
 220
 221 int backend_startup(Backend *be)
 222 {
 223         int i;
 224         int rc = 0;
 225
 226         if( ! ( nBackendDB > 0 ) ) {
 227                 /* no databases */
 228 #ifdef NEW_LOGGING
 229                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 230                            "backend_startup: %d databases to startup. \n",
 231                            nBackendDB ));
 232 #else
 233                 Debug( LDAP_DEBUG_ANY,
 234                         "backend_startup: %d databases to startup.\n",
 235                         nBackendDB, 0, 0 );
 236 #endif
 237                 return 1;
 238         }
 239
 240         if(be != NULL) {
 241                 /* startup a specific backend database */
 242 #ifdef NEW_LOGGING
 243                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
 244                            "backend_startup:  starting \"%s\"\n",
 245                            be->be_suffix[0] ));
 246 #else
 247                 Debug( LDAP_DEBUG_TRACE,
 248                         "backend_startup: starting \"%s\"\n",
 249                         be->be_suffix[0], 0, 0 );
 250 #endif
 251
 252                 if ( be->bd_info->bi_open ) {
 253                         rc = be->bd_info->bi_open( be->bd_info );
 254                 }
 255
 256                 if(rc != 0) {
 257 #ifdef NEW_LOGGING
 258                         LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
 259                                    "backend_startup: bi_open failed!\n" ));
 260 #else
 261                         Debug( LDAP_DEBUG_ANY,
 262                                 "backend_startup: bi_open failed!\n",
 263                                 0, 0, 0 );
 264 #endif
 265
 266                         return rc;
 267                 }
 268
 269                 if ( be->bd_info->bi_db_open ) {
 270                         rc = be->bd_info->bi_db_open( be );
 271                 }
 272
 273                 if(rc != 0) {
 274 #ifdef NEW_LOGGING
 275                         LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
 276                                    "backend_startup: bi_db_open failed!\n" ));
 277 #else
 278                         Debug( LDAP_DEBUG_ANY,
 279                                 "backend_startup: bi_db_open failed!\n",
 280                                 0, 0, 0 );
 281 #endif
 282                         return rc;
 283                 }
 284
 285                 return rc;
 286         }
 287
 288         /* open each backend type */
 289         for( i = 0; i < nBackendInfo; i++ ) {
 290                 if( backendInfo[i].bi_nDB == 0) {
 291                         /* no database of this type, don't open */
 292                         continue;
 293                 }
 294
 295                 if( backendInfo[i].bi_open ) {
 296                         rc = backendInfo[i].bi_open(
 297                                 &backendInfo[i] );
 298                 }
 299
 300                 if(rc != 0) {
 301 #ifdef NEW_LOGGING
 302                         LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
 303                                    "backend_startup: bi_open %d failed!\n", i ));
 304 #else
 305                         Debug( LDAP_DEBUG_ANY,
 306                                 "backend_startup: bi_open %d failed!\n",
 307                                 i, 0, 0 );
 308 #endif
 309                         return rc;
 310                 }
 311         }
 312
 313         /* open each backend database */
 314         for( i = 0; i < nBackendDB; i++ ) {
 315                 /* append global access controls */
 316                 acl_append( &backendDB[i].be_acl, global_acl );
 317
 318                 if ( backendDB[i].bd_info->bi_db_open ) {
 319                         rc = backendDB[i].bd_info->bi_db_open(
 320                                 &backendDB[i] );
 321                 }
 322
 323                 if(rc != 0) {
 324 #ifdef NEW_LOGGING
 325                         LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
 326                                    "backend_startup: bi_db_open %d failed!\n", i ));
 327 #else
 328                         Debug( LDAP_DEBUG_ANY,
 329                                 "backend_startup: bi_db_open %d failed!\n",
 330                                 i, 0, 0 );
 331 #endif
 332                         return rc;
 333                 }
 334         }
 335
 336         return rc;
 337 }
 338
 339 int backend_num( Backend *be )
 340 {
 341         int i;
 342
 343         if( be == NULL ) return -1;
 344
 345         for( i = 0; i < nBackendDB; i++ ) {
 346                 if( be == &backendDB[i] ) return i;
 347         }
 348         return -1;
 349 }
 350
 351 int backend_shutdown( Backend *be )
 352 {
 353         int i;
 354         int rc = 0;
 355
 356         if( be != NULL ) {
 357                 /* shutdown a specific backend database */
 358
 359                 if ( be->bd_info->bi_nDB == 0 ) {
 360                         /* no database of this type, we never opened it */
 361                         return 0;
 362                 }
 363
 364                 if ( be->bd_info->bi_db_close ) {
 365                         be->bd_info->bi_db_close( be );
 366                 }
 367
 368                 if( be->bd_info->bi_close ) {
 369                         be->bd_info->bi_close( be->bd_info );
 370                 }
 371
 372                 return 0;
 373         }
 374
 375         /* close each backend database */
 376         for( i = 0; i < nBackendDB; i++ ) {
 377                 if ( backendDB[i].bd_info->bi_db_close ) {
 378                         backendDB[i].bd_info->bi_db_close(
 379                                 &backendDB[i] );
 380                 }
 381
 382                 if(rc != 0) {
 383 #ifdef NEW_LOGGING
 384                         LDAP_LOG(( "backend", LDAP_LEVEL_NOTICE,
 385                                    "backend_shutdown: bi_close %s failed!\n",
 386                                    backendDB[i].be_type ));
 387 #else
 388                         Debug( LDAP_DEBUG_ANY,
 389                                 "backend_close: bi_close %s failed!\n",
 390                                 backendDB[i].be_type, 0, 0 );
 391 #endif
 392                 }
 393         }
 394
 395         /* close each backend type */
 396         for( i = 0; i < nBackendInfo; i++ ) {
 397                 if( backendInfo[i].bi_nDB == 0 ) {
 398                         /* no database of this type */
 399                         continue;
 400                 }
 401
 402                 if( backendInfo[i].bi_close ) {
 403                         backendInfo[i].bi_close(
 404                                 &backendInfo[i] );
 405                 }
 406         }
 407
 408         return 0;
 409 }
 410
 411 int backend_destroy(void)
 412 {
 413         int i;
 414
 415         /* destroy each backend database */
 416         for( i = 0; i < nBackendDB; i++ ) {
 417                 if ( backendDB[i].bd_info->bi_db_destroy ) {
 418                         backendDB[i].bd_info->bi_db_destroy(
 419                                 &backendDB[i] );
 420                 }
 421         }
 422
 423         /* destroy each backend type */
 424         for( i = 0; i < nBackendInfo; i++ ) {
 425                 if( backendInfo[i].bi_destroy ) {
 426                         backendInfo[i].bi_destroy(
 427                                 &backendInfo[i] );
 428                 }
 429         }
 430
 431 #ifdef SLAPD_MODULES
 432         if (backendInfo != binfo) {
 433            free(backendInfo);
 434         }
 435 #endif /* SLAPD_MODULES */
 436
 437         nBackendInfo = 0;
 438         backendInfo = NULL;
 439
 440         return 0;
 441 }
 442
 443 BackendInfo* backend_info(const char *type)
 444 {
 445         int i;
 446
 447         /* search for the backend type */
 448         for( i = 0; i < nBackendInfo; i++ ) {
 449                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 450                         return &backendInfo[i];
 451                 }
 452         }
 453
 454         return NULL;
 455 }
 456
 457
 458 BackendDB *
 459 backend_db_init(
 460     const char  *type
 461 )
 462 {
 463         Backend *be;
 464         BackendInfo *bi = backend_info(type);
 465         int     rc = 0;
 466
 467         if( bi == NULL ) {
 468                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 469                 return NULL;
 470         }
 471
 472         backendDB = (BackendDB *) ch_realloc(
 473                         (char *) backendDB,
 474                     (nBackendDB + 1) * sizeof(Backend) );
 475
 476         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 477
 478         be = &backends[nbackends++];
 479
 480         be->bd_info = bi;
 481         be->be_def_limit = deflimit;
 482         be->be_dfltaccess = global_default_access;
 483
 484         be->be_restrictops = global_restrictops;
 485         be->be_requires = global_requires;
 486
 487         /* assign a default depth limit for alias deref */
 488         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 489
 490         if(bi->bi_db_init) {
 491                 rc = bi->bi_db_init( be );
 492         }
 493
 494         if(rc != 0) {
 495                 fprintf( stderr, "database init failed (%s)\n", type );
 496                 nbackends--;
 497                 return NULL;
 498         }
 499
 500         bi->bi_nDB++;
 501         return( be );
 502 }
 503
 504 void
 505 be_db_close( void )
 506 {
 507         int     i;
 508
 509         for ( i = 0; i < nbackends; i++ ) {
 510                 if ( backends[i].bd_info->bi_db_close ) {
 511                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 512                 }
 513         }
 514 }
 515
 516 Backend *
 517 select_backend(
 518         const char * dn,
 519         int manageDSAit )
 520 {
 521         int     i, j, len, dnlen;
 522         Backend *be = NULL;
 523
 524         dnlen = strlen( dn );
 525         for ( i = 0; i < nbackends; i++ ) {
 526                 for ( j = 0; backends[i].be_nsuffix != NULL &&
 527                     backends[i].be_nsuffix[j] != NULL; j++ )
 528                 {
 529                         len = backends[i].be_nsuffix[j]->bv_len;
 530
 531                         if ( len > dnlen ) {
 532                                 /* suffix is longer than DN */
 533                                 continue;
 534                         }
 535
 536
 537                         if ( len && len < dnlen && ( !DN_SEPARATOR( dn[(dnlen-len)-1] ) || DN_ESCAPE( dn[(dnlen-len)-2] ) ) ) {
 538                                 /* make sure we have a separator */
 539                                 continue;
 540                         }
 541
 542
 543                         if ( strcmp( backends[i].be_nsuffix[j]->bv_val, &dn[dnlen-len] ) == 0 ) {
 544                                 if( be == NULL ) {
 545                                         be = &backends[i];
 546
 547                                         if( manageDSAit && len == dnlen ) {
 548                                                 continue;
 549                                         }
 550                                 } else {
 551                                         be = &backends[i];
 552                                 }
 553                                 return be;
 554                         }
 555                 }
 556         }
 557
 558         return be;
 559 }
 560
 561 int
 562 be_issuffix(
 563     Backend     *be,
 564     const char  *suffix
 565 )
 566 {
 567         int     i;
 568         int     len = strlen(suffix);
 569
 570         for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i] != NULL; i++ ) {
 571                 if ( len != be->be_nsuffix[i]->bv_len ) {
 572                         continue;
 573                 }
 574                 if ( strcmp( be->be_nsuffix[i]->bv_val, suffix ) == 0 ) {
 575                         return( 1 );
 576                 }
 577         }
 578
 579         return( 0 );
 580 }
 581
 582 int
 583 be_isroot( Backend *be, const char *ndn )
 584 {
 585         int rc;
 586
 587         if ( ndn == NULL || *ndn == '\0' ) {
 588                 return( 0 );
 589         }
 590
 591         if ( be->be_root_ndn == NULL || *be->be_root_ndn == '\0' ) {
 592                 return( 0 );
 593         }
 594
 595         rc = strcmp( be->be_root_ndn, ndn ) ? 0 : 1;
 596
 597         return(rc);
 598 }
 599
 600 int
 601 be_isupdate( Backend *be, const char *ndn )
 602 {
 603         int rc;
 604
 605         if ( ndn == NULL || *ndn == '\0' ) {
 606                 return( 0 );
 607         }
 608
 609         if ( be->be_update_ndn == NULL || *be->be_update_ndn == '\0' ) {
 610                 return( 0 );
 611         }
 612
 613         rc = strcmp( be->be_update_ndn, ndn ) ? 0 : 1;
 614
 615         return(rc);
 616 }
 617
 618 char *
 619 be_root_dn( Backend *be )
 620 {
 621         if ( be->be_root_dn == NULL ) {
 622                 return( "" );
 623         }
 624
 625         return be->be_root_dn;
 626 }
 627
 628 int
 629 be_isroot_pw( Backend *be,
 630         Connection *conn,
 631         const char *ndn,
 632         struct berval *cred )
 633 {
 634         int result;
 635
 636         if ( ! be_isroot( be, ndn ) ) {
 637                 return 0;
 638         }
 639
 640         if( be->be_root_pw.bv_len == 0 ) {
 641                 return 0;
 642         }
 643
 644 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 645         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 646 #ifdef SLAPD_SPASSWD
 647         lutil_passwd_sasl_conn = conn->c_sasl_context;
 648 #endif
 649 #endif
 650
 651         result = lutil_passwd( &be->be_root_pw, cred, NULL );
 652
 653 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 654 #ifdef SLAPD_SPASSWD
 655         lutil_passwd_sasl_conn = NULL;
 656 #endif
 657         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 658 #endif
 659
 660         return result == 0;
 661 }
 662
 663 int
 664 be_entry_release_rw(
 665         BackendDB *be,
 666         Connection *conn,
 667         Operation *op,
 668         Entry *e,
 669         int rw )
 670 {
 671         if ( be->be_release ) {
 672                 /* free and release entry from backend */
 673                 return be->be_release( be, conn, op, e, rw );
 674         } else {
 675                 /* free entry */
 676                 entry_free( e );
 677                 return 0;
 678         }
 679 }
 680
 681 int
 682 backend_unbind(
 683         Connection   *conn,
 684         Operation    *op
 685 )
 686 {
 687         int     i;
 688
 689         for ( i = 0; i < nbackends; i++ ) {
 690                 if ( backends[i].be_unbind ) {
 691                         (*backends[i].be_unbind)( &backends[i], conn, op );
 692                 }
 693         }
 694
 695         return 0;
 696 }
 697
 698 int
 699 backend_connection_init(
 700         Connection   *conn
 701 )
 702 {
 703         int     i;
 704
 705         for ( i = 0; i < nbackends; i++ ) {
 706                 if ( backends[i].be_connection_init ) {
 707                         (*backends[i].be_connection_init)( &backends[i], conn);
 708                 }
 709         }
 710
 711         return 0;
 712 }
 713
 714 int
 715 backend_connection_destroy(
 716         Connection   *conn
 717 )
 718 {
 719         int     i;
 720
 721         for ( i = 0; i < nbackends; i++ ) {
 722                 if ( backends[i].be_connection_destroy ) {
 723                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 724                 }
 725         }
 726
 727         return 0;
 728 }
 729
 730 static int
 731 backend_check_controls(
 732         Backend *be,
 733         Connection *conn,
 734         Operation *op,
 735         const char **text )
 736 {
 737         LDAPControl **ctrls;
 738         ctrls = op->o_ctrls;
 739         if( ctrls == NULL ) {
 740                 return LDAP_SUCCESS;
 741         }
 742
 743         for( ; *ctrls != NULL ; ctrls++ ) {
 744                 if( (*ctrls)->ldctl_iscritical &&
 745                         !charray_inlist( be->be_controls, (*ctrls)->ldctl_oid ) )
 746                 {
 747                         *text = "control unavailable in NamingContext";
 748                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 749                 }
 750         }
 751
 752         return LDAP_SUCCESS;
 753 }
 754
 755 int
 756 backend_check_restrictions(
 757         Backend *be,
 758         Connection *conn,
 759         Operation *op,
 760         const void *opdata,
 761         const char **text )
 762 {
 763         int rc;
 764         slap_mask_t restrictops;
 765         slap_mask_t requires;
 766         slap_mask_t opflag;
 767         slap_ssf_set_t *ssf;
 768         int updateop = 0;
 769
 770         if( be ) {
 771                 rc = backend_check_controls( be, conn, op, text );
 772
 773                 if( rc != LDAP_SUCCESS ) {
 774                         return rc;
 775                 }
 776
 777                 restrictops = be->be_restrictops;
 778                 requires = be->be_requires;
 779                 ssf = &be->be_ssf_set;
 780
 781         } else {
 782                 restrictops = global_restrictops;
 783                 requires = global_requires;
 784                 ssf = &global_ssf_set;
 785         }
 786
 787         switch( op->o_tag ) {
 788         case LDAP_REQ_ADD:
 789                 opflag = SLAP_RESTRICT_OP_ADD;
 790                 updateop++;
 791                 break;
 792         case LDAP_REQ_BIND:
 793                 opflag = SLAP_RESTRICT_OP_BIND;
 794                 break;
 795         case LDAP_REQ_COMPARE:
 796                 opflag = SLAP_RESTRICT_OP_COMPARE;
 797                 break;
 798         case LDAP_REQ_DELETE:
 799                 updateop++;
 800                 opflag = SLAP_RESTRICT_OP_DELETE;
 801                 break;
 802         case LDAP_REQ_EXTENDED:
 803                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 804                 break;
 805         case LDAP_REQ_MODIFY:
 806                 updateop++;
 807                 opflag = SLAP_RESTRICT_OP_MODIFY;
 808                 break;
 809         case LDAP_REQ_RENAME:
 810                 updateop++;
 811                 opflag = SLAP_RESTRICT_OP_RENAME;
 812                 break;
 813         case LDAP_REQ_SEARCH:
 814                 opflag = SLAP_RESTRICT_OP_SEARCH;
 815                 break;
 816         case LDAP_REQ_UNBIND:
 817                 opflag = 0;
 818                 break;
 819         default:
 820                 *text = "restrict operations internal error";
 821                 return LDAP_OTHER;
 822         }
 823
 824         if ( op->o_tag != LDAP_REQ_EXTENDED
 825                 || strcmp( (const char *) opdata, LDAP_EXOP_START_TLS ) )
 826         {
 827                 /* these checks don't apply to StartTLS */
 828
 829                 if( op->o_tag == LDAP_REQ_EXTENDED ) {
 830                         /* threat other extended operations as update ops */
 831                         updateop++;
 832                 }
 833
 834                 if( op->o_transport_ssf < ssf->sss_transport ) {
 835                         *text = "transport confidentiality required";
 836                         return LDAP_CONFIDENTIALITY_REQUIRED;
 837                 }
 838
 839                 if( op->o_tls_ssf < ssf->sss_tls ) {
 840                         *text = "TLS confidentiality required";
 841                         return LDAP_CONFIDENTIALITY_REQUIRED;
 842                 }
 843
 844                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
 845                         /* these checks don't apply to SASL bind */
 846
 847                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
 848                                 *text = "SASL confidentiality required";
 849                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 850                         }
 851
 852                         if( op->o_ssf < ssf->sss_ssf ) {
 853                                 *text = "confidentiality required";
 854                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 855                         }
 856                 }
 857
 858                 if( updateop ) {
 859                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
 860                                 *text = "transport update confidentiality required";
 861                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 862                         }
 863
 864                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
 865                                 *text = "TLS update confidentiality required";
 866                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 867                         }
 868
 869                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
 870                                 *text = "SASL update confidentiality required";
 871                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 872                         }
 873
 874                         if( op->o_ssf < ssf->sss_update_ssf ) {
 875                                 *text = "update confidentiality required";
 876                                 return LDAP_CONFIDENTIALITY_REQUIRED;
 877                         }
 878
 879                         if( op->o_ndn == NULL ) {
 880                                 *text = "modifications require authentication";
 881                                 return LDAP_OPERATIONS_ERROR;
 882                         }
 883                 }
 884         }
 885
 886         if ( op->o_tag != LDAP_REQ_BIND && ( op->o_tag != LDAP_REQ_EXTENDED ||
 887                 strcmp( (const char *) opdata, LDAP_EXOP_START_TLS ) ) )
 888         {
 889                 /* these checks don't apply to Bind or StartTLS */
 890
 891                 if( requires & SLAP_REQUIRE_STRONG ) {
 892                         /* should check mechanism */
 893                         if( op->o_authmech == NULL ||
 894                                 op->o_dn == NULL || *op->o_dn == '\0' )
 895                         {
 896                                 *text = "strong authentication required";
 897                                 return LDAP_STRONG_AUTH_REQUIRED;
 898                         }
 899                 }
 900
 901                 if( requires & SLAP_REQUIRE_SASL ) {
 902                         if( op->o_authmech == NULL ||
 903                                 op->o_dn == NULL || *op->o_dn == '\0' )
 904                         {
 905                                 *text = "SASL authentication required";
 906                                 return LDAP_STRONG_AUTH_REQUIRED;
 907                         }
 908                 }
 909
 910                 if( requires & SLAP_REQUIRE_AUTHC ) {
 911                         if( op->o_dn == NULL || *op->o_dn == '\0' ) {
 912                                 *text = "authentication required";
 913                                 return LDAP_UNWILLING_TO_PERFORM;
 914                         }
 915                 }
 916
 917                 if( requires & SLAP_REQUIRE_BIND ) {
 918                         int version;
 919                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 920                         version = conn->c_protocol;
 921                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 922
 923                         if( !version ) {
 924                                 /* no bind has occurred */
 925                                 *text = "BIND required";
 926                                 return LDAP_OPERATIONS_ERROR;
 927                         }
 928                 }
 929
 930                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
 931                         if( op->o_protocol < LDAP_VERSION3 ) {
 932                                 /* no bind has occurred */
 933                                 *text = "operation restricted to LDAPv3 clients";
 934                                 return LDAP_OPERATIONS_ERROR;
 935                         }
 936                 }
 937         }
 938
 939         if( restrictops & opflag ) {
 940                 if( restrictops == SLAP_RESTRICT_OP_READS ) {
 941                         *text = "read operations restricted";
 942                 } else {
 943                         *text = "operation restricted";
 944                 }
 945                 return LDAP_UNWILLING_TO_PERFORM;
 946         }
 947
 948         return LDAP_SUCCESS;
 949 }
 950
 951 int backend_check_referrals(
 952         Backend *be,
 953         Connection *conn,
 954         Operation *op,
 955         const char *dn,
 956         const char *ndn )
 957 {
 958         int rc = LDAP_SUCCESS;
 959
 960         if( be->be_chk_referrals ) {
 961                 const char *text;
 962
 963                 rc = be->be_chk_referrals( be,
 964                         conn, op, dn, ndn, &text );
 965
 966                 if( rc != LDAP_SUCCESS && rc != LDAP_REFERRAL ) {
 967                         send_ldap_result( conn, op, rc,
 968                                 NULL, text, NULL, NULL );
 969                 }
 970         }
 971
 972         return rc;
 973 }
 974
 975 int
 976 backend_group(
 977         Backend *be,
 978         Connection *conn,
 979         Operation *op,
 980         Entry   *target,
 981         const char      *gr_ndn,
 982         const char      *op_ndn,
 983         ObjectClass *group_oc,
 984         AttributeDescription *group_at
 985 )
 986 {
 987         GroupAssertion *g;
 988         int len = strlen(gr_ndn);
 989         int i;
 990
 991         ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 992         i = op->o_abandon;
 993         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 994         if (i)
 995                 return SLAPD_ABANDON;
 996
 997         if( strcmp( target->e_ndn, gr_ndn ) != 0 ) {
 998                 /* we won't attempt to send it to a different backend */
 999
1000                 be = select_backend(gr_ndn, 0);
1001
1002                 if (be == NULL) {
1003                         return LDAP_NO_SUCH_OBJECT;
1004                 }
1005         }
1006
1007         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1008         for (g = conn->c_groups; g; g=g->next) {
1009                 if (g->be != be || g->oc != group_oc || g->at != group_at ||
1010                     g->len != len)
1011                         continue;
1012                 if (strcmp( g->ndn, gr_ndn ) == 0)
1013                         break;
1014         }
1015         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1016         if (g)
1017                 return g->res;
1018
1019         if( be->be_group ) {
1020                 int res = be->be_group( be, conn, op,
1021                         target, gr_ndn, op_ndn,
1022                         group_oc, group_at );
1023
1024                 if (op->o_tag != LDAP_REQ_BIND) {
1025                         g = ch_malloc(sizeof(GroupAssertion) + len);
1026                         g->be = be;
1027                         g->oc = group_oc;
1028                         g->at = group_at;
1029                         g->res = res;
1030                         g->len = len;
1031                         strcpy(g->ndn, gr_ndn);
1032                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1033                         g->next = conn->c_groups;
1034                         conn->c_groups = g;
1035                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1036                 }
1037
1038                 return res;
1039         }
1040
1041         return LDAP_UNWILLING_TO_PERFORM;
1042 }
1043
1044 int
1045 backend_attribute(
1046         Backend *be,
1047         Connection *conn,
1048         Operation *op,
1049         Entry   *target,
1050         const char      *e_ndn,
1051         AttributeDescription *entry_at,
1052         struct berval ***vals
1053 )
1054 {
1055         if( target == NULL || strcmp( target->e_ndn, e_ndn ) != 0 ) {
1056                 /* we won't attempt to send it to a different backend */
1057
1058                 be = select_backend(e_ndn, 0);
1059
1060                 if (be == NULL) {
1061                         return LDAP_NO_SUCH_OBJECT;
1062                 }
1063         }
1064
1065         if( be->be_attribute ) {
1066                 return be->be_attribute( be, conn, op, target, e_ndn,
1067                         entry_at, vals );
1068         }
1069
1070         return LDAP_UNWILLING_TO_PERFORM;
1071 }
1072
1073 Attribute *backend_operational(
1074         Backend *be,
1075         Connection *conn,
1076         Operation *op,
1077         Entry *e )
1078 {
1079         Attribute *a = NULL;
1080
1081 #ifdef SLAPD_SCHEMA_DN
1082         a = ch_malloc( sizeof( Attribute ) );
1083         a->a_desc = slap_schema.si_ad_subschemaSubentry;
1084
1085         /* Should be backend specific */
1086         a->a_vals = ch_malloc( 2 * sizeof( struct berval * ) );
1087         a->a_vals[0] = ber_bvstrdup( SLAPD_SCHEMA_DN );
1088         a->a_vals[1] = NULL;
1089
1090         a->a_next = NULL;
1091 #endif
1092
1093         return a;
1094 }