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