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

   1 /* backend.c - routines for dealing with back-end databases */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2006 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31
  32 #include <ac/string.h>
  33 #include <ac/socket.h>
  34 #include <sys/stat.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38 #include "lber_pvt.h"
  39
  40 /*
  41  * If a module is configured as dynamic, its header should not
  42  * get included into slapd. While this is a general rule and does
  43  * not have much of an effect in UNIX, this rule should be adhered
  44  * to for Windows, where dynamic object code should not be implicitly
  45  * imported into slapd without appropriate __declspec(dllimport) directives.
  46  */
  47
  48 int                     nBackendInfo = 0;
  49 slap_bi_head backendInfo = LDAP_STAILQ_HEAD_INITIALIZER(backendInfo);
  50
  51 int                     nBackendDB = 0;
  52 slap_be_head backendDB = LDAP_STAILQ_HEAD_INITIALIZER(backendDB);
  53
  54 static int
  55 backend_init_controls( BackendInfo *bi )
  56 {
  57         if ( bi->bi_controls ) {
  58                 int     i;
  59
  60                 for ( i = 0; bi->bi_controls[ i ]; i++ ) {
  61                         int     cid;
  62
  63                         if ( slap_find_control_id( bi->bi_controls[ i ], &cid )
  64                                         == LDAP_CONTROL_NOT_FOUND )
  65                         {
  66                                 if ( !( slapMode & SLAP_TOOL_MODE ) ) {
  67                                         assert( 0 );
  68                                 }
  69
  70                                 return -1;
  71                         }
  72
  73                         bi->bi_ctrls[ cid ] = 1;
  74                 }
  75         }
  76
  77         return 0;
  78 }
  79
  80 int backend_init(void)
  81 {
  82         int rc = -1;
  83         BackendInfo *bi;
  84
  85         if((nBackendInfo != 0) || !LDAP_STAILQ_EMPTY(&backendInfo)) {
  86                 /* already initialized */
  87                 Debug( LDAP_DEBUG_ANY,
  88                         "backend_init: already initialized\n", 0, 0, 0 );
  89                 return -1;
  90         }
  91
  92         for( bi=slap_binfo; bi->bi_type != NULL; bi++,nBackendInfo++ ) {
  93                 assert( bi->bi_init != 0 );
  94
  95                 rc = bi->bi_init( bi );
  96
  97                 if(rc != 0) {
  98                         Debug( LDAP_DEBUG_ANY,
  99                                 "backend_init: initialized for type \"%s\"\n",
 100                                 bi->bi_type, 0, 0 );
 101                         /* destroy those we've already inited */
 102                         for( nBackendInfo--;
 103                                 nBackendInfo >= 0 ;
 104                                 nBackendInfo-- )
 105                         {
 106                                 if ( slap_binfo[nBackendInfo].bi_destroy ) {
 107                                         slap_binfo[nBackendInfo].bi_destroy(
 108                                                 &slap_binfo[nBackendInfo] );
 109                                 }
 110                         }
 111                         return rc;
 112                 }
 113
 114                 LDAP_STAILQ_INSERT_TAIL(&backendInfo, bi, bi_next);
 115         }
 116
 117         if ( nBackendInfo > 0) {
 118                 return 0;
 119         }
 120
 121 #ifdef SLAPD_MODULES
 122         return 0;
 123 #else
 124
 125         Debug( LDAP_DEBUG_ANY,
 126                 "backend_init: failed\n",
 127                 0, 0, 0 );
 128
 129         return rc;
 130 #endif /* SLAPD_MODULES */
 131 }
 132
 133 int backend_add(BackendInfo *aBackendInfo)
 134 {
 135         int rc = 0;
 136
 137         if ( aBackendInfo->bi_init == NULL ) {
 138                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 139                         "backend type \"%s\" does not have the (mandatory)init function\n",
 140                         aBackendInfo->bi_type, 0, 0 );
 141                 return -1;
 142         }
 143
 144         rc = aBackendInfo->bi_init(aBackendInfo);
 145         if ( rc != 0) {
 146                 Debug( LDAP_DEBUG_ANY,
 147                         "backend_add:  initialization for type \"%s\" failed\n",
 148                         aBackendInfo->bi_type, 0, 0 );
 149                 return rc;
 150         }
 151
 152         (void)backend_init_controls( aBackendInfo );
 153
 154         /* now add the backend type to the Backend Info List */
 155         LDAP_STAILQ_INSERT_TAIL( &backendInfo, aBackendInfo, bi_next );
 156         nBackendInfo++;
 157         return 0;
 158 }
 159
 160 static int
 161 backend_set_controls( BackendDB *be )
 162 {
 163         BackendInfo     *bi = be->bd_info;
 164
 165         /* back-relay takes care of itself; so may do other */
 166         if ( overlay_is_over( be ) ) {
 167                 bi = ((slap_overinfo *)be->bd_info->bi_private)->oi_orig;
 168         }
 169
 170         if ( bi->bi_controls ) {
 171                 if ( be->be_ctrls[ SLAP_MAX_CIDS ] == 0 ) {
 172                         AC_MEMCPY( be->be_ctrls, bi->bi_ctrls,
 173                                         sizeof( be->be_ctrls ) );
 174                         be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
 175
 176                 } else {
 177                         int     i;
 178
 179                         for ( i = 0; i < SLAP_MAX_CIDS; i++ ) {
 180                                 if ( bi->bi_ctrls[ i ] ) {
 181                                         be->be_ctrls[ i ] = bi->bi_ctrls[ i ];
 182                                 }
 183                         }
 184                 }
 185
 186         }
 187
 188         return 0;
 189 }
 190
 191 /* startup a specific backend database */
 192 int backend_startup_one(Backend *be)
 193 {
 194         int             rc = 0;
 195
 196         assert( be != NULL );
 197
 198         be->be_pending_csn_list = (struct be_pcl *)
 199                 ch_calloc( 1, sizeof( struct be_pcl ) );
 200
 201         LDAP_TAILQ_INIT( be->be_pending_csn_list );
 202
 203         Debug( LDAP_DEBUG_TRACE,
 204                 "backend_startup_one: starting \"%s\"\n",
 205                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 206                 0, 0 );
 207
 208         /* set database controls */
 209         (void)backend_set_controls( be );
 210
 211         if ( be->bd_info->bi_db_open ) {
 212                 rc = be->bd_info->bi_db_open( be );
 213                 if ( rc == 0 ) {
 214                         (void)backend_set_controls( be );
 215
 216                 } else {
 217                         Debug( LDAP_DEBUG_ANY,
 218                                 "backend_startup_one: bi_db_open failed! (%d)\n",
 219                                 rc, 0, 0 );
 220                 }
 221         }
 222
 223         return rc;
 224 }
 225
 226 int backend_startup(Backend *be)
 227 {
 228         int i;
 229         int rc = 0;
 230         BackendInfo *bi;
 231
 232         if( ! ( nBackendDB > 0 ) ) {
 233                 /* no databases */
 234                 Debug( LDAP_DEBUG_ANY,
 235                         "backend_startup: %d databases to startup.\n",
 236                         nBackendDB, 0, 0 );
 237                 return 1;
 238         }
 239
 240         if(be != NULL) {
 241                 if ( be->bd_info->bi_open ) {
 242                         rc = be->bd_info->bi_open( be->bd_info );
 243                         if ( rc != 0 ) {
 244                                 Debug( LDAP_DEBUG_ANY,
 245                                         "backend_startup: bi_open failed!\n",
 246                                         0, 0, 0 );
 247
 248                                 return rc;
 249                         }
 250                 }
 251
 252                 return backend_startup_one( be );
 253         }
 254
 255         /* open frontend, if required */
 256         if ( frontendDB->bd_info->bi_db_open ) {
 257                 rc = frontendDB->bd_info->bi_db_open( frontendDB );
 258                 if ( rc != 0 ) {
 259                         Debug( LDAP_DEBUG_ANY,
 260                                 "backend_startup: bi_db_open(frontend) failed! (%d)\n",
 261                                 rc, 0, 0 );
 262                         return rc;
 263                 }
 264         }
 265
 266         /* open each backend type */
 267         i = -1;
 268         LDAP_STAILQ_FOREACH(bi, &backendInfo, bi_next) {
 269                 i++;
 270                 if( bi->bi_nDB == 0) {
 271                         /* no database of this type, don't open */
 272                         continue;
 273                 }
 274
 275                 if( bi->bi_open ) {
 276                         rc = bi->bi_open( bi );
 277                         if ( rc != 0 ) {
 278                                 Debug( LDAP_DEBUG_ANY,
 279                                         "backend_startup: bi_open %d (%s) failed!\n",
 280                                         i, bi->bi_type, 0 );
 281                                 return rc;
 282                         }
 283                 }
 284
 285                 (void)backend_init_controls( bi );
 286         }
 287
 288         /* open each backend database */
 289         i = -1;
 290         LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
 291                 i++;
 292                 if ( be->be_suffix == NULL ) {
 293                         Debug( LDAP_DEBUG_ANY,
 294                                 "backend_startup: warning, database %d (%s) "
 295                                 "has no suffix\n",
 296                                 i, be->bd_info->bi_type, 0 );
 297                 }
 298                 /* append global access controls */
 299                 acl_append( &be->be_acl, frontendDB->be_acl, -1 );
 300
 301                 rc = backend_startup_one( be );
 302
 303                 if ( rc ) return rc;
 304         }
 305
 306         return rc;
 307 }
 308
 309 int backend_num( Backend *be )
 310 {
 311         int i = 0;
 312         BackendDB *b2;
 313
 314         if( be == NULL ) return -1;
 315
 316         LDAP_STAILQ_FOREACH( b2, &backendDB, be_next ) {
 317                 if( be == b2 ) return i;
 318                 i++;
 319         }
 320         return -1;
 321 }
 322
 323 int backend_shutdown( Backend *be )
 324 {
 325         int rc = 0;
 326         BackendInfo *bi;
 327
 328         if( be != NULL ) {
 329                 /* shutdown a specific backend database */
 330
 331                 if ( be->bd_info->bi_nDB == 0 ) {
 332                         /* no database of this type, we never opened it */
 333                         return 0;
 334                 }
 335
 336                 if ( be->bd_info->bi_db_close ) {
 337                         be->bd_info->bi_db_close( be );
 338                 }
 339
 340                 if( be->bd_info->bi_close ) {
 341                         be->bd_info->bi_close( be->bd_info );
 342                 }
 343
 344                 return 0;
 345         }
 346
 347         /* close each backend database */
 348         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 349                 if ( be->bd_info->bi_db_close ) {
 350                         be->bd_info->bi_db_close( be );
 351                 }
 352
 353                 if(rc != 0) {
 354                         Debug( LDAP_DEBUG_ANY,
 355                                 "backend_close: bi_db_close %s failed!\n",
 356                                 be->be_type, 0, 0 );
 357                 }
 358         }
 359
 360         /* close each backend type */
 361         LDAP_STAILQ_FOREACH( bi, &backendInfo, bi_next ) {
 362                 if( bi->bi_nDB == 0 ) {
 363                         /* no database of this type */
 364                         continue;
 365                 }
 366
 367                 if( bi->bi_close ) {
 368                         bi->bi_close( bi );
 369                 }
 370         }
 371
 372         /* close frontend, if required */
 373         if ( frontendDB->bd_info->bi_db_close ) {
 374                 rc = frontendDB->bd_info->bi_db_close ( frontendDB );
 375                 if ( rc != 0 ) {
 376                         Debug( LDAP_DEBUG_ANY,
 377                                 "backend_startup: bi_db_close(frontend) failed! (%d)\n",
 378                                 rc, 0, 0 );
 379                 }
 380         }
 381
 382         return 0;
 383 }
 384
 385 void backend_destroy_one( BackendDB *bd, int dynamic )
 386 {
 387         if ( dynamic ) {
 388                 LDAP_STAILQ_REMOVE(&backendDB, bd, slap_backend_db, be_next );
 389         }
 390
 391         if ( bd->be_syncinfo ) {
 392                 syncinfo_free( bd->be_syncinfo );
 393         }
 394
 395         if ( bd->be_pending_csn_list ) {
 396                 struct slap_csn_entry *csne;
 397                 csne = LDAP_TAILQ_FIRST( bd->be_pending_csn_list );
 398                 while ( csne ) {
 399                         struct slap_csn_entry *tmp_csne = csne;
 400
 401                         LDAP_TAILQ_REMOVE( bd->be_pending_csn_list, csne, ce_csn_link );
 402                         ch_free( csne->ce_csn.bv_val );
 403                         csne = LDAP_TAILQ_NEXT( csne, ce_csn_link );
 404                         ch_free( tmp_csne );
 405                 }
 406                 ch_free( bd->be_pending_csn_list );
 407         }
 408
 409         if ( bd->bd_info->bi_db_destroy ) {
 410                 bd->bd_info->bi_db_destroy( bd );
 411         }
 412         ber_bvarray_free( bd->be_suffix );
 413         ber_bvarray_free( bd->be_nsuffix );
 414         if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
 415                 free( bd->be_rootdn.bv_val );
 416         }
 417         if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
 418                 free( bd->be_rootndn.bv_val );
 419         }
 420         if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
 421                 free( bd->be_rootpw.bv_val );
 422         }
 423         acl_destroy( bd->be_acl, frontendDB->be_acl );
 424         limits_destroy( bd->be_limits );
 425         if ( bd->be_replogfile ) {
 426                 ch_free( bd->be_replogfile );
 427         }
 428         if ( bd->be_replica_argsfile ) {
 429                 ch_free( bd->be_replica_argsfile );
 430         }
 431         if ( bd->be_replica_pidfile ) {
 432                 ch_free( bd->be_replica_pidfile );
 433         }
 434         destroy_replica_info( bd );
 435         if ( !BER_BVISNULL( &bd->be_update_ndn ) ) {
 436                 ch_free( bd->be_update_ndn.bv_val );
 437         }
 438         if ( bd->be_update_refs ) {
 439                 ber_bvarray_free( bd->be_update_refs );
 440         }
 441
 442         if ( dynamic ) {
 443                 free( bd );
 444         }
 445 }
 446
 447 int backend_destroy(void)
 448 {
 449         BackendDB *bd;
 450         BackendInfo *bi;
 451
 452         /* destroy each backend database */
 453         while (( bd = LDAP_STAILQ_FIRST(&backendDB))) {
 454                 backend_destroy_one( bd, 1 );
 455         }
 456
 457         /* destroy each backend type */
 458         LDAP_STAILQ_FOREACH( bi, &backendInfo, bi_next ) {
 459                 if( bi->bi_destroy ) {
 460                         bi->bi_destroy( bi );
 461                 }
 462         }
 463
 464         nBackendInfo = 0;
 465         LDAP_STAILQ_INIT(&backendInfo);
 466
 467         /* destroy frontend database */
 468         bd = frontendDB;
 469         if ( bd ) {
 470                 if ( bd->bd_info->bi_db_destroy ) {
 471                         bd->bd_info->bi_db_destroy( bd );
 472                 }
 473                 ber_bvarray_free( bd->be_suffix );
 474                 ber_bvarray_free( bd->be_nsuffix );
 475                 if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
 476                         free( bd->be_rootdn.bv_val );
 477                 }
 478                 if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
 479                         free( bd->be_rootndn.bv_val );
 480                 }
 481                 if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
 482                         free( bd->be_rootpw.bv_val );
 483                 }
 484                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 485
 486                 if ( bd->be_replogfile != NULL ) {
 487                         free( bd->be_replogfile );
 488                 }
 489                 if ( bd->be_replica_argsfile ) {
 490                         ch_free( bd->be_replica_argsfile );
 491                 }
 492                 if ( bd->be_replica_pidfile ) {
 493                         ch_free( bd->be_replica_pidfile );
 494                 }
 495                 assert( bd->be_replica == NULL );
 496         }
 497
 498         return 0;
 499 }
 500
 501 BackendInfo* backend_info(const char *type)
 502 {
 503         BackendInfo *bi;
 504
 505         /* search for the backend type */
 506         LDAP_STAILQ_FOREACH(bi,&backendInfo,bi_next) {
 507                 if( strcasecmp(bi->bi_type, type) == 0 ) {
 508                         return bi;
 509                 }
 510         }
 511
 512         return NULL;
 513 }
 514
 515
 516 BackendDB *
 517 backend_db_init(
 518     const char  *type,
 519         BackendDB *be )
 520 {
 521         BackendInfo *bi = backend_info(type);
 522         int     rc = 0;
 523
 524         if( bi == NULL ) {
 525                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 526                 return NULL;
 527         }
 528
 529         /* If be is provided, treat it as private. Otherwise allocate
 530          * one and add it to the global list.
 531          */
 532         if ( !be ) {
 533                 be = ch_calloc( 1, sizeof(Backend) );
 534                 nbackends++;
 535                 LDAP_STAILQ_INSERT_TAIL(&backendDB, be, be_next);
 536         }
 537
 538         be->bd_info = bi;
 539
 540         be->be_def_limit = frontendDB->be_def_limit;
 541         be->be_dfltaccess = frontendDB->be_dfltaccess;
 542
 543         be->be_restrictops = frontendDB->be_restrictops;
 544         be->be_requires = frontendDB->be_requires;
 545         be->be_ssf_set = frontendDB->be_ssf_set;
 546
 547         be->be_pcl_mutexp = &be->be_pcl_mutex;
 548         ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
 549
 550         /* assign a default depth limit for alias deref */
 551         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 552
 553         if ( bi->bi_db_init ) {
 554                 rc = bi->bi_db_init( be );
 555         }
 556
 557         if ( rc != 0 ) {
 558                 fprintf( stderr, "database init failed (%s)\n", type );
 559                 nbackends--;
 560                 return NULL;
 561         }
 562
 563         bi->bi_nDB++;
 564         return( be );
 565 }
 566
 567 void
 568 be_db_close( void )
 569 {
 570         BackendDB *be;
 571
 572         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 573                 if ( be->bd_info->bi_db_close ) {
 574                         be->bd_info->bi_db_close( be );
 575                 }
 576         }
 577
 578         if ( frontendDB->bd_info->bi_db_close ) {
 579                 (*frontendDB->bd_info->bi_db_close)( frontendDB );
 580         }
 581
 582 }
 583
 584 Backend *
 585 select_backend(
 586         struct berval * dn,
 587         int manageDSAit,
 588         int noSubs )
 589 {
 590         int             j;
 591         ber_len_t       len, dnlen = dn->bv_len;
 592         Backend         *be, *b2 = NULL;
 593
 594         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 595                 if ( be->be_nsuffix == NULL ) {
 596                         continue;
 597                 }
 598
 599                 for ( j = 0; !BER_BVISNULL( &be->be_nsuffix[j] ); j++ )
 600                 {
 601                         if ( ( SLAP_GLUE_SUBORDINATE( be ) ) && noSubs )
 602                         {
 603                                 continue;
 604                         }
 605
 606                         len = be->be_nsuffix[j].bv_len;
 607
 608                         if ( len > dnlen ) {
 609                                 /* suffix is longer than DN */
 610                                 continue;
 611                         }
 612
 613                         /*
 614                          * input DN is normalized, so the separator check
 615                          * need not look at escaping
 616                          */
 617                         if ( len && len < dnlen &&
 618                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 619                         {
 620                                 continue;
 621                         }
 622
 623                         if ( strcmp( be->be_nsuffix[j].bv_val,
 624                                 &dn->bv_val[dnlen-len] ) == 0 )
 625                         {
 626                                 if( b2 == NULL ) {
 627                                         b2 = be;
 628
 629                                         if( manageDSAit && len == dnlen &&
 630                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 631                                                 continue;
 632                                         }
 633                                 } else {
 634                                         /* If any parts of the tree are glued, use the first
 635                                          * match regardless of manageDSAit. Otherwise use the
 636                                          * last match.
 637                                          */
 638                                         if( !( SLAP_DBFLAGS( be ) & ( SLAP_DBFLAG_GLUE_INSTANCE |
 639                                                 SLAP_DBFLAG_GLUE_SUBORDINATE )))
 640                                                 b2 = be;
 641                                 }
 642                                 return b2;
 643                         }
 644                 }
 645         }
 646
 647         return b2;
 648 }
 649
 650 int
 651 be_issuffix(
 652     Backend *be,
 653     struct berval *bvsuffix )
 654 {
 655         int     i;
 656
 657         if ( be->be_nsuffix == NULL ) {
 658                 return 0;
 659         }
 660
 661         for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
 662                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 663                         return 1;
 664                 }
 665         }
 666
 667         return 0;
 668 }
 669
 670 int
 671 be_isroot_dn( Backend *be, struct berval *ndn )
 672 {
 673         if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
 674                 return 0;
 675         }
 676
 677         return dn_match( &be->be_rootndn, ndn );
 678 }
 679
 680 int
 681 be_slurp_update( Operation *op )
 682 {
 683         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 684                 be_isupdate_dn( op->o_bd, &op->o_ndn ) );
 685 }
 686
 687 int
 688 be_shadow_update( Operation *op )
 689 {
 690         return ( SLAP_SYNC_SHADOW( op->o_bd ) ||
 691                 ( SLAP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn ) ) );
 692 }
 693
 694 int
 695 be_isupdate_dn( Backend *be, struct berval *ndn )
 696 {
 697         if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_update_ndn ) ) {
 698                 return 0;
 699         }
 700
 701         return dn_match( &be->be_update_ndn, ndn );
 702 }
 703
 704 struct berval *
 705 be_root_dn( Backend *be )
 706 {
 707         return &be->be_rootdn;
 708 }
 709
 710 int
 711 be_isroot( Operation *op )
 712 {
 713         return be_isroot_dn( op->o_bd, &op->o_ndn );
 714 }
 715
 716 int
 717 be_isroot_pw( Operation *op )
 718 {
 719         int result;
 720
 721         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 722                 return 0;
 723         }
 724
 725         if ( BER_BVISEMPTY( &op->o_bd->be_rootpw ) ) {
 726                 return 0;
 727         }
 728
 729 #ifdef SLAPD_SPASSWD
 730         ldap_pvt_thread_pool_setkey( op->o_threadctx, slap_sasl_bind,
 731                 op->o_conn->c_sasl_authctx, NULL );
 732 #endif
 733
 734         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 735
 736 #ifdef SLAPD_SPASSWD
 737         ldap_pvt_thread_pool_setkey( op->o_threadctx, slap_sasl_bind, NULL, NULL );
 738 #endif
 739
 740         return result == 0;
 741 }
 742
 743 int
 744 be_entry_release_rw(
 745         Operation *op,
 746         Entry *e,
 747         int rw )
 748 {
 749         if ( op->o_bd->be_release ) {
 750                 /* free and release entry from backend */
 751                 return op->o_bd->be_release( op, e, rw );
 752         } else {
 753                 /* free entry */
 754                 entry_free( e );
 755                 return 0;
 756         }
 757 }
 758
 759 int
 760 backend_unbind( Operation *op, SlapReply *rs )
 761 {
 762         BackendDB *be;
 763
 764         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 765                 if ( be->be_unbind ) {
 766                         op->o_bd = be;
 767                         be->be_unbind( op, rs );
 768                 }
 769         }
 770
 771         return 0;
 772 }
 773
 774 int
 775 backend_connection_init(
 776         Connection   *conn )
 777 {
 778         BackendDB *be;
 779
 780         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 781                 if ( be->be_connection_init ) {
 782                         be->be_connection_init( be, conn );
 783                 }
 784         }
 785
 786         return 0;
 787 }
 788
 789 int
 790 backend_connection_destroy(
 791         Connection   *conn )
 792 {
 793         BackendDB *be;
 794
 795         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 796                 if ( be->be_connection_destroy ) {
 797                         be->be_connection_destroy( be, conn);
 798                 }
 799         }
 800
 801         return 0;
 802 }
 803
 804 int
 805 backend_check_controls(
 806         Operation *op,
 807         SlapReply *rs )
 808 {
 809         LDAPControl **ctrls = op->o_ctrls;
 810         rs->sr_err = LDAP_SUCCESS;
 811
 812         if( ctrls ) {
 813                 for( ; *ctrls != NULL ; ctrls++ ) {
 814                         int cid;
 815
 816                         switch ( slap_global_control( op, (*ctrls)->ldctl_oid, &cid ) ) {
 817                         case LDAP_CONTROL_NOT_FOUND:
 818                                 /* unrecognized control */
 819                                 if ( (*ctrls)->ldctl_iscritical ) {
 820                                         /* should not be reachable */
 821                                         Debug( LDAP_DEBUG_ANY,
 822                                                 "backend_check_controls: unrecognized control: %s\n",
 823                                                 (*ctrls)->ldctl_oid, 0, 0 );
 824                                         assert( 0 );
 825                                 }
 826                                 break;
 827
 828                         case LDAP_COMPARE_FALSE:
 829                                 if ( !op->o_bd->be_ctrls[cid] && (*ctrls)->ldctl_iscritical ) {
 830                                         /* Per RFC 2251 (and LDAPBIS discussions), if the control
 831                                          * is recognized and appropriate for the operation (which
 832                                          * we've already verified), then the server should make
 833                                          * use of the control when performing the operation.
 834                                          *
 835                                          * Here we find that operation extended by the control
 836                                          * is unavailable in a particular context, and the control
 837                                          * is marked Critical, hence the return of
 838                                          * unwillingToPerform.
 839                                          */
 840                                         rs->sr_text = "critical control unavailable in context";
 841                                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 842                                         goto done;
 843                                 }
 844                                 break;
 845
 846                         case LDAP_COMPARE_TRUE:
 847                                 break;
 848
 849                         default:
 850                                 /* unreachable */
 851                                 Debug( LDAP_DEBUG_ANY,
 852                                         "backend_check_controls: unable to check control: %s\n",
 853                                         (*ctrls)->ldctl_oid, 0, 0 );
 854                                 assert( 0 );
 855
 856                                 rs->sr_text = "unable to check control";
 857                                 rs->sr_err = LDAP_OTHER;
 858                                 goto done;
 859                         }
 860                 }
 861         }
 862
 863         /* temporarily removed */
 864 #if 0
 865         /* check should be generalized */
 866         if( get_manageDIT(op) && !be_isroot(op)) {
 867                 rs->sr_text = "requires manager authorization";
 868                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 869         }
 870 #endif
 871
 872 done:;
 873         return rs->sr_err;
 874 }
 875
 876 int
 877 backend_check_restrictions(
 878         Operation *op,
 879         SlapReply *rs,
 880         struct berval *opdata )
 881 {
 882         slap_mask_t restrictops;
 883         slap_mask_t requires;
 884         slap_mask_t opflag;
 885         slap_mask_t exopflag = 0;
 886         slap_ssf_set_t *ssf;
 887         int updateop = 0;
 888         int starttls = 0;
 889         int session = 0;
 890
 891         if ( op->o_bd ) {
 892                 int     rc = SLAP_CB_CONTINUE;
 893
 894                 if ( op->o_bd->be_chk_controls ) {
 895                         rc = ( *op->o_bd->be_chk_controls )( op, rs );
 896                 }
 897
 898                 if ( rc == SLAP_CB_CONTINUE ) {
 899                         rc = backend_check_controls( op, rs );
 900                 }
 901
 902                 if ( rc != LDAP_SUCCESS ) {
 903                         return rs->sr_err;
 904                 }
 905
 906                 restrictops = op->o_bd->be_restrictops;
 907                 requires = op->o_bd->be_requires;
 908                 ssf = &op->o_bd->be_ssf_set;
 909
 910         } else {
 911                 restrictops = frontendDB->be_restrictops;
 912                 requires = frontendDB->be_requires;
 913                 ssf = &frontendDB->be_ssf_set;
 914         }
 915
 916         switch( op->o_tag ) {
 917         case LDAP_REQ_ADD:
 918                 opflag = SLAP_RESTRICT_OP_ADD;
 919                 updateop++;
 920                 break;
 921         case LDAP_REQ_BIND:
 922                 opflag = SLAP_RESTRICT_OP_BIND;
 923                 session++;
 924                 break;
 925         case LDAP_REQ_COMPARE:
 926                 opflag = SLAP_RESTRICT_OP_COMPARE;
 927                 break;
 928         case LDAP_REQ_DELETE:
 929                 updateop++;
 930                 opflag = SLAP_RESTRICT_OP_DELETE;
 931                 break;
 932         case LDAP_REQ_EXTENDED:
 933                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 934
 935                 if( !opdata ) {
 936                         /* treat unspecified as a modify */
 937                         opflag = SLAP_RESTRICT_OP_MODIFY;
 938                         updateop++;
 939                         break;
 940                 }
 941
 942                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 943                         session++;
 944                         starttls++;
 945                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 946                         break;
 947                 }
 948
 949                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 950                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
 951                         break;
 952                 }
 953
 954                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
 955                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
 956                         break;
 957                 }
 958
 959                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
 960                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
 961                         updateop++;
 962                         break;
 963                 }
 964
 965                 /* treat everything else as a modify */
 966                 opflag = SLAP_RESTRICT_OP_MODIFY;
 967                 updateop++;
 968                 break;
 969
 970         case LDAP_REQ_MODIFY:
 971                 updateop++;
 972                 opflag = SLAP_RESTRICT_OP_MODIFY;
 973                 break;
 974         case LDAP_REQ_RENAME:
 975                 updateop++;
 976                 opflag = SLAP_RESTRICT_OP_RENAME;
 977                 break;
 978         case LDAP_REQ_SEARCH:
 979                 opflag = SLAP_RESTRICT_OP_SEARCH;
 980                 break;
 981         case LDAP_REQ_UNBIND:
 982                 session++;
 983                 opflag = 0;
 984                 break;
 985         default:
 986                 rs->sr_text = "restrict operations internal error";
 987                 rs->sr_err = LDAP_OTHER;
 988                 return rs->sr_err;
 989         }
 990
 991         if ( !starttls ) {
 992                 /* these checks don't apply to StartTLS */
 993
 994                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
 995                 if( op->o_transport_ssf < ssf->sss_transport ) {
 996                         rs->sr_text = op->o_transport_ssf
 997                                 ? "stronger transport confidentiality required"
 998                                 : "transport confidentiality required";
 999                         return rs->sr_err;
1000                 }
1001
1002                 if( op->o_tls_ssf < ssf->sss_tls ) {
1003                         rs->sr_text = op->o_tls_ssf
1004                                 ? "stronger TLS confidentiality required"
1005                                 : "TLS confidentiality required";
1006                         return rs->sr_err;
1007                 }
1008
1009
1010                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1011                         /* simple bind specific check */
1012                         if( op->o_ssf < ssf->sss_simple_bind ) {
1013                                 rs->sr_text = op->o_ssf
1014                                         ? "stronger confidentiality required"
1015                                         : "confidentiality required";
1016                                 return rs->sr_err;
1017                         }
1018                 }
1019
1020                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1021                         /* these checks don't apply to SASL bind */
1022
1023                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1024                                 rs->sr_text = op->o_sasl_ssf
1025                                         ? "stronger SASL confidentiality required"
1026                                         : "SASL confidentiality required";
1027                                 return rs->sr_err;
1028                         }
1029
1030                         if( op->o_ssf < ssf->sss_ssf ) {
1031                                 rs->sr_text = op->o_ssf
1032                                         ? "stronger confidentiality required"
1033                                         : "confidentiality required";
1034                                 return rs->sr_err;
1035                         }
1036                 }
1037
1038                 if( updateop ) {
1039                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1040                                 rs->sr_text = op->o_transport_ssf
1041                                         ? "stronger transport confidentiality required for update"
1042                                         : "transport confidentiality required for update";
1043                                 return rs->sr_err;
1044                         }
1045
1046                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1047                                 rs->sr_text = op->o_tls_ssf
1048                                         ? "stronger TLS confidentiality required for update"
1049                                         : "TLS confidentiality required for update";
1050                                 return rs->sr_err;
1051                         }
1052
1053                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1054                                 rs->sr_text = op->o_sasl_ssf
1055                                         ? "stronger SASL confidentiality required for update"
1056                                         : "SASL confidentiality required for update";
1057                                 return rs->sr_err;
1058                         }
1059
1060                         if( op->o_ssf < ssf->sss_update_ssf ) {
1061                                 rs->sr_text = op->o_ssf
1062                                         ? "stronger confidentiality required for update"
1063                                         : "confidentiality required for update";
1064                                 return rs->sr_err;
1065                         }
1066
1067                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1068                                 BER_BVISEMPTY( &op->o_ndn ) )
1069                         {
1070                                 rs->sr_text = "modifications require authentication";
1071                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1072                                 return rs->sr_err;
1073                         }
1074
1075 #ifdef SLAP_X_LISTENER_MOD
1076                         if ( op->o_conn->c_listener &&
1077                                 ! ( op->o_conn->c_listener->sl_perms & ( !BER_BVISEMPTY( &op->o_ndn )
1078                                         ? (S_IWUSR|S_IWOTH) : S_IWOTH ) ) )
1079                         {
1080                                 /* no "w" mode means readonly */
1081                                 rs->sr_text = "modifications not allowed on this listener";
1082                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1083                                 return rs->sr_err;
1084                         }
1085 #endif /* SLAP_X_LISTENER_MOD */
1086                 }
1087         }
1088
1089         if ( !session ) {
1090                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1091
1092                 if( requires & SLAP_REQUIRE_STRONG ) {
1093                         /* should check mechanism */
1094                         if( ( op->o_transport_ssf < ssf->sss_transport
1095                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1096                                 || BER_BVISEMPTY( &op->o_dn ) )
1097                         {
1098                                 rs->sr_text = "strong(er) authentication required";
1099                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1100                                 return rs->sr_err;
1101                         }
1102                 }
1103
1104                 if( requires & SLAP_REQUIRE_SASL ) {
1105                         if( op->o_authtype != LDAP_AUTH_SASL || BER_BVISEMPTY( &op->o_dn ) ) {
1106                                 rs->sr_text = "SASL authentication required";
1107                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1108                                 return rs->sr_err;
1109                         }
1110                 }
1111
1112                 if( requires & SLAP_REQUIRE_AUTHC ) {
1113                         if( BER_BVISEMPTY( &op->o_dn ) ) {
1114                                 rs->sr_text = "authentication required";
1115                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1116                                 return rs->sr_err;
1117                         }
1118                 }
1119
1120                 if( requires & SLAP_REQUIRE_BIND ) {
1121                         int version;
1122                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1123                         version = op->o_conn->c_protocol;
1124                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1125
1126                         if( !version ) {
1127                                 /* no bind has occurred */
1128                                 rs->sr_text = "BIND required";
1129                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1130                                 return rs->sr_err;
1131                         }
1132                 }
1133
1134                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1135                         if( op->o_protocol < LDAP_VERSION3 ) {
1136                                 /* no bind has occurred */
1137                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1138                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1139                                 return rs->sr_err;
1140                         }
1141                 }
1142
1143 #ifdef SLAP_X_LISTENER_MOD
1144                 if ( !starttls && BER_BVISEMPTY( &op->o_dn ) ) {
1145                         if ( op->o_conn->c_listener &&
1146                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1147                 {
1148                                 /* no "x" mode means bind required */
1149                                 rs->sr_text = "bind required on this listener";
1150                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1151                                 return rs->sr_err;
1152                         }
1153                 }
1154
1155                 if ( !starttls && !updateop ) {
1156                         if ( op->o_conn->c_listener &&
1157                                 !( op->o_conn->c_listener->sl_perms &
1158                                         ( !BER_BVISEMPTY( &op->o_dn )
1159                                                 ? (S_IRUSR|S_IROTH) : S_IROTH )))
1160                         {
1161                                 /* no "r" mode means no read */
1162                                 rs->sr_text = "read not allowed on this listener";
1163                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1164                                 return rs->sr_err;
1165                         }
1166                 }
1167 #endif /* SLAP_X_LISTENER_MOD */
1168
1169         }
1170
1171         if( ( restrictops & opflag )
1172                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1173                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1174                         rs->sr_text = "read operations restricted";
1175                 } else if ( restrictops & exopflag ) {
1176                         rs->sr_text = "extended operation restricted";
1177                 } else {
1178                         rs->sr_text = "operation restricted";
1179                 }
1180                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1181                 return rs->sr_err;
1182         }
1183
1184         rs->sr_err = LDAP_SUCCESS;
1185         return rs->sr_err;
1186 }
1187
1188 int backend_check_referrals( Operation *op, SlapReply *rs )
1189 {
1190         rs->sr_err = LDAP_SUCCESS;
1191
1192         if( op->o_bd->be_chk_referrals ) {
1193                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1194
1195                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1196                         send_ldap_result( op, rs );
1197                 }
1198         }
1199
1200         return rs->sr_err;
1201 }
1202
1203 int
1204 be_entry_get_rw(
1205         Operation *op,
1206         struct berval *ndn,
1207         ObjectClass *oc,
1208         AttributeDescription *at,
1209         int rw,
1210         Entry **e )
1211 {
1212         *e = NULL;
1213
1214         if ( op->o_bd == NULL ) {
1215                 return LDAP_NO_SUCH_OBJECT;
1216         }
1217
1218         if ( op->o_bd->be_fetch ) {
1219                 return op->o_bd->be_fetch( op, ndn, oc, at, rw, e );
1220         }
1221
1222         return LDAP_UNWILLING_TO_PERFORM;
1223 }
1224
1225 int
1226 fe_acl_group(
1227         Operation *op,
1228         Entry   *target,
1229         struct berval *gr_ndn,
1230         struct berval *op_ndn,
1231         ObjectClass *group_oc,
1232         AttributeDescription *group_at )
1233 {
1234         Entry *e;
1235         void *o_priv = op->o_private, *e_priv = NULL;
1236         Attribute *a;
1237         int rc;
1238         GroupAssertion *g;
1239         Backend *be = op->o_bd;
1240
1241         op->o_bd = select_backend( gr_ndn, 0, 0 );
1242
1243         for ( g = op->o_groups; g; g = g->ga_next ) {
1244                 if ( g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1245                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len )
1246                 {
1247                         continue;
1248                 }
1249                 if ( strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0 ) {
1250                         break;
1251                 }
1252         }
1253
1254         if ( g ) {
1255                 rc = g->ga_res;
1256                 goto done;
1257         }
1258
1259         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1260                 e = target;
1261                 rc = 0;
1262         } else {
1263                 op->o_private = NULL;
1264                 rc = be_entry_get_rw( op, gr_ndn, group_oc, group_at, 0, &e );
1265                 e_priv = op->o_private;
1266                 op->o_private = o_priv;
1267         }
1268         if ( e ) {
1269                 a = attr_find( e->e_attrs, group_at );
1270                 if ( a ) {
1271                         /* If the attribute is a subtype of labeledURI, treat this as
1272                          * a dynamic group ala groupOfURLs
1273                          */
1274                         if (is_at_subtype( group_at->ad_type,
1275                                 slap_schema.si_ad_labeledURI->ad_type ) )
1276                         {
1277                                 int i;
1278                                 LDAPURLDesc *ludp;
1279                                 struct berval bv, nbase;
1280                                 Filter *filter;
1281                                 Entry *user;
1282                                 void *user_priv = NULL;
1283                                 Backend *b2 = op->o_bd;
1284
1285                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1286                                         user = target;
1287                                 } else {
1288                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1289                                         op->o_private = NULL;
1290                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1291                                         user_priv = op->o_private;
1292                                         op->o_private = o_priv;
1293                                 }
1294
1295                                 if ( rc == 0 ) {
1296                                         rc = LDAP_COMPARE_FALSE;
1297                                         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
1298                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1299                                                         LDAP_URL_SUCCESS )
1300                                                 {
1301                                                         continue;
1302                                                 }
1303                                                 BER_BVZERO( &nbase );
1304                                                 /* host part must be empty */
1305                                                 /* attrs and extensions parts must be empty */
1306                                                 if ( ( ludp->lud_host && *ludp->lud_host ) ||
1307                                                         ludp->lud_attrs || ludp->lud_exts )
1308                                                 {
1309                                                         goto loopit;
1310                                                 }
1311                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1312                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1313                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1314                                                 {
1315                                                         goto loopit;
1316                                                 }
1317                                                 switch ( ludp->lud_scope ) {
1318                                                 case LDAP_SCOPE_BASE:
1319                                                         if ( !dn_match( &nbase, op_ndn ) ) {
1320                                                                 goto loopit;
1321                                                         }
1322                                                         break;
1323                                                 case LDAP_SCOPE_ONELEVEL:
1324                                                         dnParent( op_ndn, &bv );
1325                                                         if ( !dn_match( &nbase, &bv ) ) {
1326                                                                 goto loopit;
1327                                                         }
1328                                                         break;
1329                                                 case LDAP_SCOPE_SUBTREE:
1330                                                         if ( !dnIsSuffix( op_ndn, &nbase ) ) {
1331                                                                 goto loopit;
1332                                                         }
1333                                                         break;
1334                                                 case LDAP_SCOPE_SUBORDINATE:
1335                                                         if ( dn_match( &nbase, op_ndn ) ||
1336                                                                 !dnIsSuffix( op_ndn, &nbase ) )
1337                                                         {
1338                                                                 goto loopit;
1339                                                         }
1340                                                 }
1341                                                 filter = str2filter_x( op, ludp->lud_filter );
1342                                                 if ( filter ) {
1343                                                         if ( test_filter( NULL, user, filter ) ==
1344                                                                 LDAP_COMPARE_TRUE )
1345                                                         {
1346                                                                 rc = 0;
1347                                                         }
1348                                                         filter_free_x( op, filter );
1349                                                 }
1350 loopit:
1351                                                 ldap_free_urldesc( ludp );
1352                                                 if ( !BER_BVISNULL( &nbase ) ) {
1353                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1354                                                 }
1355                                                 if ( rc == 0 ) break;
1356                                         }
1357                                         if ( user != target ) {
1358                                                 op->o_private = user_priv;
1359                                                 be_entry_release_r( op, user );
1360                                                 op->o_private = o_priv;
1361                                         }
1362                                 }
1363                                 op->o_bd = b2;
1364                         } else {
1365                                 rc = value_find_ex( group_at,
1366                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1367                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1368                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1369                                 if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
1370                                         rc = LDAP_COMPARE_FALSE;
1371                         }
1372                 } else {
1373                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1374                 }
1375                 if ( e != target ) {
1376                         op->o_private = e_priv;
1377                         be_entry_release_r( op, e );
1378                         op->o_private = o_priv;
1379                 }
1380         } else {
1381                 rc = LDAP_NO_SUCH_OBJECT;
1382         }
1383
1384         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1385                 g = op->o_tmpalloc( sizeof( GroupAssertion ) + gr_ndn->bv_len,
1386                         op->o_tmpmemctx );
1387                 g->ga_be = op->o_bd;
1388                 g->ga_oc = group_oc;
1389                 g->ga_at = group_at;
1390                 g->ga_res = rc;
1391                 g->ga_len = gr_ndn->bv_len;
1392                 strcpy( g->ga_ndn, gr_ndn->bv_val );
1393                 g->ga_next = op->o_groups;
1394                 op->o_groups = g;
1395         }
1396 done:
1397         op->o_bd = be;
1398         return rc;
1399 }
1400
1401 int
1402 backend_group(
1403         Operation *op,
1404         Entry   *target,
1405         struct berval *gr_ndn,
1406         struct berval *op_ndn,
1407         ObjectClass *group_oc,
1408         AttributeDescription *group_at )
1409 {
1410         int                     rc;
1411         BackendDB               *be_orig;
1412
1413         if ( op->o_abandon ) {
1414                 return SLAPD_ABANDON;
1415         }
1416
1417         be_orig = op->o_bd;
1418         op->o_bd = frontendDB;
1419 #ifdef SLAP_OVERLAY_ACCESS
1420         rc = frontendDB->be_group( op, target, gr_ndn,
1421                 op_ndn, group_oc, group_at );
1422 #else /* ! SLAP_OVERLAY_ACCESS */
1423         rc = fe_acl_group( op, target, gr_ndn,
1424                 op_ndn, group_oc, group_at );
1425 #endif /* ! SLAP_OVERLAY_ACCESS */
1426         op->o_bd = be_orig;
1427
1428         return rc;
1429 }
1430
1431 int
1432 fe_acl_attribute(
1433         Operation *op,
1434         Entry   *target,
1435         struct berval   *edn,
1436         AttributeDescription *entry_at,
1437         BerVarray *vals,
1438         slap_access_t access )
1439 {
1440         Entry                   *e = NULL;
1441         void                    *o_priv = op->o_private, *e_priv = NULL;
1442         Attribute               *a = NULL;
1443         int                     freeattr = 0, i, j, rc = LDAP_SUCCESS;
1444         AccessControlState      acl_state = ACL_STATE_INIT;
1445         Backend                 *be = op->o_bd;
1446
1447         op->o_bd = select_backend( edn, 0, 0 );
1448
1449         if ( target && dn_match( &target->e_nname, edn ) ) {
1450                 e = target;
1451
1452         } else {
1453                 op->o_private = NULL;
1454                 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1455                 e_priv = op->o_private;
1456                 op->o_private = o_priv;
1457         }
1458
1459         if ( e ) {
1460                 if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children ) {
1461                         assert( vals == NULL );
1462
1463                         rc = LDAP_SUCCESS;
1464                         if ( op->o_conn && access > ACL_NONE &&
1465                                 access_allowed( op, e, entry_at, NULL,
1466                                                 access, &acl_state ) == 0 )
1467                         {
1468                                 rc = LDAP_INSUFFICIENT_ACCESS;
1469                         }
1470                         goto freeit;
1471                 }
1472
1473                 a = attr_find( e->e_attrs, entry_at );
1474                 if ( a == NULL ) {
1475                         SlapReply       rs = { 0 };
1476                         AttributeName   anlist[ 2 ];
1477
1478                         anlist[ 0 ].an_name = entry_at->ad_cname;
1479                         anlist[ 0 ].an_desc = entry_at;
1480                         BER_BVZERO( &anlist[ 1 ].an_name );
1481                         rs.sr_attrs = anlist;
1482
1483                         /* NOTE: backend_operational() is also called
1484                          * when returning results, so it's supposed
1485                          * to do no harm to entries */
1486                         rs.sr_entry = e;
1487                         rc = backend_operational( op, &rs );
1488                         rs.sr_entry = NULL;
1489
1490                         if ( rc == LDAP_SUCCESS ) {
1491                                 if ( rs.sr_operational_attrs ) {
1492                                         freeattr = 1;
1493                                         a = rs.sr_operational_attrs;
1494
1495                                 } else {
1496                                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1497                                 }
1498                         }
1499                 }
1500
1501                 if ( a ) {
1502                         BerVarray v;
1503
1504                         if ( op->o_conn && access > ACL_NONE &&
1505                                 access_allowed( op, e, entry_at, NULL,
1506                                                 access, &acl_state ) == 0 )
1507                         {
1508                                 rc = LDAP_INSUFFICIENT_ACCESS;
1509                                 goto freeit;
1510                         }
1511
1512                         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1513                                 ;
1514
1515                         v = op->o_tmpalloc( sizeof(struct berval) * ( i + 1 ),
1516                                 op->o_tmpmemctx );
1517                         for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1518                         {
1519                                 if ( op->o_conn && access > ACL_NONE &&
1520                                         access_allowed( op, e, entry_at,
1521                                                         &a->a_nvals[i],
1522                                                         access,
1523                                                         &acl_state ) == 0 )
1524                                 {
1525                                         continue;
1526                                 }
1527                                 ber_dupbv_x( &v[j], &a->a_nvals[i],
1528                                                 op->o_tmpmemctx );
1529                                 if ( !BER_BVISNULL( &v[j] ) ) {
1530                                         j++;
1531                                 }
1532                         }
1533                         if ( j == 0 ) {
1534                                 op->o_tmpfree( v, op->o_tmpmemctx );
1535                                 *vals = NULL;
1536                                 rc = LDAP_INSUFFICIENT_ACCESS;
1537
1538                         } else {
1539                                 BER_BVZERO( &v[j] );
1540                                 *vals = v;
1541                                 rc = LDAP_SUCCESS;
1542                         }
1543                 }
1544 freeit:         if ( e != target ) {
1545                         op->o_private = e_priv;
1546                         be_entry_release_r( op, e );
1547                         op->o_private = o_priv;
1548                 }
1549                 if ( freeattr ) {
1550                         attr_free( a );
1551                 }
1552         }
1553
1554         op->o_bd = be;
1555         return rc;
1556 }
1557
1558 int
1559 backend_attribute(
1560         Operation *op,
1561         Entry   *target,
1562         struct berval   *edn,
1563         AttributeDescription *entry_at,
1564         BerVarray *vals,
1565         slap_access_t access )
1566 {
1567         int                     rc;
1568         BackendDB               *be_orig;
1569
1570         be_orig = op->o_bd;
1571         op->o_bd = frontendDB;
1572 #ifdef SLAP_OVERLAY_ACCESS
1573         rc = frontendDB->be_attribute( op, target, edn,
1574                 entry_at, vals, access );
1575 #else /* !SLAP_OVERLAY_ACCESS */
1576         rc = fe_acl_attribute( op, target, edn,
1577                 entry_at, vals, access );
1578 #endif /* !SLAP_OVERLAY_ACCESS */
1579         op->o_bd = be_orig;
1580
1581         return rc;
1582 }
1583
1584 int
1585 backend_access(
1586         Operation               *op,
1587         Entry                   *target,
1588         struct berval           *edn,
1589         AttributeDescription    *entry_at,
1590         struct berval           *nval,
1591         slap_access_t           access,
1592         slap_mask_t             *mask )
1593 {
1594         Entry           *e = NULL;
1595         void            *o_priv = op->o_private, *e_priv = NULL;
1596         int             rc = LDAP_INSUFFICIENT_ACCESS;
1597         Backend         *be = op->o_bd;
1598
1599         /* pedantic */
1600         assert( op != NULL );
1601         assert( op->o_conn != NULL );
1602         assert( edn != NULL );
1603         assert( access > ACL_NONE );
1604
1605         op->o_bd = select_backend( edn, 0, 0 );
1606
1607         if ( target && dn_match( &target->e_nname, edn ) ) {
1608                 e = target;
1609
1610         } else {
1611                 op->o_private = NULL;
1612                 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1613                 e_priv = op->o_private;
1614                 op->o_private = o_priv;
1615         }
1616
1617         if ( e ) {
1618                 Attribute       *a = NULL;
1619                 int             freeattr = 0;
1620
1621                 if ( entry_at == NULL ) {
1622                         entry_at = slap_schema.si_ad_entry;
1623                 }
1624
1625                 if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children )
1626                 {
1627                         if ( access_allowed_mask( op, e, entry_at,
1628                                         NULL, access, NULL, mask ) == 0 )
1629                         {
1630                                 rc = LDAP_INSUFFICIENT_ACCESS;
1631
1632                         } else {
1633                                 rc = LDAP_SUCCESS;
1634                         }
1635
1636                 } else {
1637                         a = attr_find( e->e_attrs, entry_at );
1638                         if ( a == NULL ) {
1639                                 SlapReply       rs = { 0 };
1640                                 AttributeName   anlist[ 2 ];
1641
1642                                 anlist[ 0 ].an_name = entry_at->ad_cname;
1643                                 anlist[ 0 ].an_desc = entry_at;
1644                                 BER_BVZERO( &anlist[ 1 ].an_name );
1645                                 rs.sr_attrs = anlist;
1646
1647                                 rs.sr_attr_flags = slap_attr_flags( rs.sr_attrs );
1648
1649                                 /* NOTE: backend_operational() is also called
1650                                  * when returning results, so it's supposed
1651                                  * to do no harm to entries */
1652                                 rs.sr_entry = e;
1653                                 rc = backend_operational( op, &rs );
1654                                 rs.sr_entry = NULL;
1655
1656                                 if ( rc == LDAP_SUCCESS ) {
1657                                         if ( rs.sr_operational_attrs ) {
1658                                                 freeattr = 1;
1659                                                 a = rs.sr_operational_attrs;
1660
1661                                         } else {
1662                                                 rc = LDAP_NO_SUCH_OBJECT;
1663                                         }
1664                                 }
1665                         }
1666
1667                         if ( a ) {
1668                                 if ( access_allowed_mask( op, e, entry_at,
1669                                                 nval, access, NULL, mask ) == 0 )
1670                                 {
1671                                         rc = LDAP_INSUFFICIENT_ACCESS;
1672                                         goto freeit;
1673                                 }
1674                                 rc = LDAP_SUCCESS;
1675                         }
1676                 }
1677 freeit:         if ( e != target ) {
1678                         op->o_private = e_priv;
1679                         be_entry_release_r( op, e );
1680                         op->o_private = o_priv;
1681                 }
1682                 if ( freeattr ) {
1683                         attr_free( a );
1684                 }
1685         }
1686
1687         op->o_bd = be;
1688         return rc;
1689 }
1690
1691 int
1692 fe_aux_operational(
1693         Operation *op,
1694         SlapReply *rs )
1695 {
1696         Attribute               **ap;
1697         int                     rc = 0;
1698         BackendDB               *be_orig;
1699
1700         for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1701                 /* just count them */ ;
1702
1703         /*
1704          * If operational attributes (allegedly) are required,
1705          * and the backend supports specific operational attributes,
1706          * add them to the attribute list
1707          */
1708         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
1709                 ad_inlist( slap_schema.si_ad_entryDN, rs->sr_attrs ) ) )
1710         {
1711                 *ap = slap_operational_entryDN( rs->sr_entry );
1712                 ap = &(*ap)->a_next;
1713         }
1714
1715         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
1716                 ad_inlist( slap_schema.si_ad_subschemaSubentry, rs->sr_attrs ) ) )
1717         {
1718                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1719                 ap = &(*ap)->a_next;
1720         }
1721
1722         if ( op->o_bd != NULL )
1723         {
1724                 /* Let the overlays have a chance at this */
1725                 be_orig = op->o_bd;
1726                 op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
1727                 if ( !be_match( op->o_bd, frontendDB ) &&
1728                         ( SLAP_OPATTRS( rs->sr_attr_flags ) || rs->sr_attrs ) &&
1729                         op->o_bd != NULL && op->o_bd->be_operational != NULL )
1730                 {
1731                         rc = op->o_bd->be_operational( op, rs );
1732                 }
1733                 op->o_bd = be_orig;
1734         }
1735
1736         return rc;
1737 }
1738
1739 int backend_operational( Operation *op, SlapReply *rs )
1740 {
1741         int rc;
1742         BackendDB *be_orig;
1743
1744         /* Moved this into the frontend so global overlays are called */
1745
1746         be_orig = op->o_bd;
1747         op->o_bd = frontendDB;
1748         rc = frontendDB->be_operational( op, rs );
1749         op->o_bd = be_orig;
1750
1751         return rc;
1752 }
1753