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 1998-2005 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 #include "ldap_rq.h"
  41
  42 #ifdef LDAP_SLAPI
  43 #include "slapi/slapi.h"
  44
  45 static void init_group_pblock( Operation *op, Entry *target,
  46         Entry *e, struct berval *op_ndn, AttributeDescription *group_at );
  47 static int call_group_preop_plugins( Operation *op );
  48 static void call_group_postop_plugins( Operation *op );
  49 #endif /* LDAP_SLAPI */
  50
  51 /*
  52  * If a module is configured as dynamic, its header should not
  53  * get included into slapd. While this is a general rule and does
  54  * not have much of an effect in UNIX, this rule should be adhered
  55  * to for Windows, where dynamic object code should not be implicitly
  56  * imported into slapd without appropriate __declspec(dllimport) directives.
  57  */
  58
  59 int                     nBackendInfo = 0;
  60 BackendInfo             *backendInfo = NULL;
  61
  62 int                     nBackendDB = 0;
  63 BackendDB               *backendDB = NULL;
  64
  65 ldap_pvt_thread_pool_t  syncrepl_pool;
  66 int                     syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS;
  67
  68 static int
  69 backend_init_controls( BackendInfo *bi )
  70 {
  71         if ( bi->bi_controls ) {
  72                 int     i;
  73
  74                 for ( i = 0; bi->bi_controls[ i ]; i++ ) {
  75                         int     cid;
  76
  77                         if ( slap_find_control_id( bi->bi_controls[ i ], &cid )
  78                                         == LDAP_CONTROL_NOT_FOUND )
  79                         {
  80                                 if ( !( slapMode & SLAP_TOOL_MODE ) ) {
  81                                         assert( 0 );
  82                                 }
  83
  84                                 return -1;
  85                         }
  86
  87                         bi->bi_ctrls[ cid ] = 1;
  88                 }
  89         }
  90
  91         return 0;
  92 }
  93
  94 int backend_init(void)
  95 {
  96         int rc = -1;
  97
  98         ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 );
  99
 100         if((nBackendInfo != 0) || (backendInfo != NULL)) {
 101                 /* already initialized */
 102                 Debug( LDAP_DEBUG_ANY,
 103                         "backend_init: already initialized\n", 0, 0, 0 );
 104                 return -1;
 105         }
 106
 107         for( ;
 108                 slap_binfo[nBackendInfo].bi_type != NULL;
 109                 nBackendInfo++ )
 110         {
 111                 assert( slap_binfo[nBackendInfo].bi_init );
 112
 113                 rc = slap_binfo[nBackendInfo].bi_init( &slap_binfo[nBackendInfo] );
 114
 115                 if(rc != 0) {
 116                         Debug( LDAP_DEBUG_ANY,
 117                                 "backend_init: initialized for type \"%s\"\n",
 118                                 slap_binfo[nBackendInfo].bi_type, 0, 0 );
 119                         /* destroy those we've already inited */
 120                         for( nBackendInfo--;
 121                                 nBackendInfo >= 0 ;
 122                                 nBackendInfo-- )
 123                         {
 124                                 if ( slap_binfo[nBackendInfo].bi_destroy ) {
 125                                         slap_binfo[nBackendInfo].bi_destroy(
 126                                                 &slap_binfo[nBackendInfo] );
 127                                 }
 128                         }
 129                         return rc;
 130                 }
 131         }
 132
 133         if ( nBackendInfo > 0) {
 134                 backendInfo = slap_binfo;
 135                 return 0;
 136         }
 137
 138 #ifdef SLAPD_MODULES
 139         return 0;
 140 #else
 141
 142         Debug( LDAP_DEBUG_ANY,
 143                 "backend_init: failed\n",
 144                 0, 0, 0 );
 145
 146         return rc;
 147 #endif /* SLAPD_MODULES */
 148 }
 149
 150 int backend_add(BackendInfo *aBackendInfo)
 151 {
 152         int rc = 0;
 153
 154         if ( aBackendInfo->bi_init == NULL ) {
 155                 Debug( LDAP_DEBUG_ANY, "backend_add: "
 156                         "backend type \"%s\" does not have the (mandatory)init function\n",
 157                         aBackendInfo->bi_type, 0, 0 );
 158                 return -1;
 159         }
 160
 161         rc = aBackendInfo->bi_init(aBackendInfo);
 162         if ( rc != 0) {
 163                 Debug( LDAP_DEBUG_ANY,
 164                         "backend_add:  initialization for type \"%s\" failed\n",
 165                         aBackendInfo->bi_type, 0, 0 );
 166                 return rc;
 167         }
 168
 169         (void)backend_init_controls( aBackendInfo );
 170
 171         /* now add the backend type to the Backend Info List */
 172         {
 173                 BackendInfo *newBackendInfo = 0;
 174
 175                 /* if backendInfo == slap_binfo no deallocation of old backendInfo */
 176                 if (backendInfo == slap_binfo) {
 177                         newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
 178                         AC_MEMCPY(newBackendInfo, backendInfo,
 179                                 sizeof(BackendInfo) * nBackendInfo);
 180                 } else {
 181                         newBackendInfo = ch_realloc(backendInfo,
 182                                 sizeof(BackendInfo) * (nBackendInfo + 1));
 183                 }
 184
 185                 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
 186                         sizeof(BackendInfo));
 187                 backendInfo = newBackendInfo;
 188                 nBackendInfo++;
 189                 return 0;
 190         }
 191 }
 192
 193 /* startup a specific backend database */
 194 int backend_startup_one(Backend *be)
 195 {
 196         int             rc = 0;
 197         BackendInfo     *bi = be->bd_info;
 198
 199         assert(be);
 200
 201         be->be_pending_csn_list = (struct be_pcl *)
 202                 ch_calloc( 1, sizeof( struct be_pcl ));
 203
 204         LDAP_TAILQ_INIT( be->be_pending_csn_list );
 205
 206         /* back-relay takes care of itself; so may do other */
 207         if ( be->be_ctrls[ SLAP_MAX_CIDS ] == 0 ) {
 208                 if ( overlay_is_over( be ) ) {
 209                         bi = ((slap_overinfo *)be->bd_info->bi_private)->oi_orig;
 210                 }
 211
 212                 if ( bi->bi_controls ) {
 213                         AC_MEMCPY( be->be_ctrls, bi->bi_ctrls, sizeof( be->be_ctrls ) );
 214                 }
 215
 216                 be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
 217         }
 218
 219         Debug( LDAP_DEBUG_TRACE,
 220                 "backend_startup_one: starting \"%s\"\n",
 221                 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
 222                 0, 0 );
 223         if ( be->bd_info->bi_db_open ) {
 224                 rc = be->bd_info->bi_db_open( be );
 225                 if ( rc != 0 ) {
 226                         Debug( LDAP_DEBUG_ANY,
 227                                 "backend_startup_one: bi_db_open failed! (%d)\n",
 228                                 rc, 0, 0 );
 229                 }
 230         }
 231
 232         /* back-relay takes care of itself; so may do other */
 233         bi = be->bd_info;
 234         if ( overlay_is_over( be ) ) {
 235                 bi = ((slap_overinfo *)be->bd_info->bi_private)->oi_orig;
 236         }
 237
 238         if ( bi->bi_controls ) {
 239                 if ( be->be_ctrls[ SLAP_MAX_CIDS ] == 0 ) {
 240                         AC_MEMCPY( be->be_ctrls, bi->bi_ctrls, sizeof( be->be_ctrls ) );
 241                         be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
 242
 243                 } else {
 244                         int     i;
 245
 246                         for ( i = 0; i < SLAP_MAX_CIDS; i++ ) {
 247                                 if ( bi->bi_ctrls[ i ] ) {
 248                                         be->be_ctrls[ i ] = 1;
 249                                 }
 250                         }
 251                 }
 252         }
 253
 254         return rc;
 255 }
 256
 257 int backend_startup(Backend *be)
 258 {
 259         int i;
 260         int rc = 0;
 261
 262         if( ! ( nBackendDB > 0 ) ) {
 263                 /* no databases */
 264                 Debug( LDAP_DEBUG_ANY,
 265                         "backend_startup: %d databases to startup.\n",
 266                         nBackendDB, 0, 0 );
 267                 return 1;
 268         }
 269
 270         if(be != NULL) {
 271                 if ( be->bd_info->bi_open ) {
 272                         rc = be->bd_info->bi_open( be->bd_info );
 273                         if ( rc != 0 ) {
 274                                 Debug( LDAP_DEBUG_ANY,
 275                                         "backend_startup: bi_open failed!\n",
 276                                         0, 0, 0 );
 277
 278                                 return rc;
 279                         }
 280                 }
 281
 282                 return backend_startup_one( be );
 283         }
 284
 285         /* open frontend, if required */
 286         if ( frontendDB->bd_info->bi_db_open ) {
 287                 rc = frontendDB->bd_info->bi_db_open( frontendDB );
 288                 if ( rc != 0 ) {
 289                         Debug( LDAP_DEBUG_ANY,
 290                                 "backend_startup: bi_db_open(frontend) failed! (%d)\n",
 291                                 rc, 0, 0 );
 292                         return rc;
 293                 }
 294         }
 295
 296         /* open each backend type */
 297         for( i = 0; i < nBackendInfo; i++ ) {
 298                 if( backendInfo[i].bi_nDB == 0) {
 299                         /* no database of this type, don't open */
 300                         continue;
 301                 }
 302
 303                 if( backendInfo[i].bi_open ) {
 304                         rc = backendInfo[i].bi_open( &backendInfo[i] );
 305                         if ( rc != 0 ) {
 306                                 Debug( LDAP_DEBUG_ANY,
 307                                         "backend_startup: bi_open %d failed!\n",
 308                                         i, 0, 0 );
 309                                 return rc;
 310                         }
 311                 }
 312
 313                 (void)backend_init_controls( &backendInfo[i] );
 314         }
 315
 316         ldap_pvt_thread_mutex_init( &slapd_rq.rq_mutex );
 317         LDAP_STAILQ_INIT( &slapd_rq.task_list );
 318         LDAP_STAILQ_INIT( &slapd_rq.run_list );
 319
 320         /* open each backend database */
 321         for( i = 0; i < nBackendDB; i++ ) {
 322                 if ( backendDB[i].be_suffix == NULL ) {
 323                         Debug( LDAP_DEBUG_ANY,
 324                                 "backend_startup: warning, database %d (%s) "
 325                                 "has no suffix\n",
 326                                 i, backendDB[i].bd_info->bi_type, 0 );
 327                 }
 328                 /* append global access controls */
 329                 acl_append( &backendDB[i].be_acl, frontendDB->be_acl );
 330
 331                 rc = backend_startup_one( &backendDB[i] );
 332
 333                 if ( rc ) return rc;
 334
 335
 336                 if ( backendDB[i].be_syncinfo ) {
 337                         syncinfo_t *si;
 338
 339                         if ( !( backendDB[i].be_search && backendDB[i].be_add &&
 340                                 backendDB[i].be_modify && backendDB[i].be_delete )) {
 341                                 Debug( LDAP_DEBUG_ANY,
 342                                         "backend_startup: database(%d) does not support "
 343                                         "operations required for syncrepl", i, 0, 0 );
 344                                 continue;
 345                         }
 346
 347                         {
 348                                 si = backendDB[i].be_syncinfo;
 349                                 si->si_be = &backendDB[i];
 350                                 init_syncrepl( si );
 351                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 352                                 ldap_pvt_runqueue_insert( &slapd_rq,
 353                                                 si->si_interval, do_syncrepl, (void *) si );
 354                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 355                         }
 356                 }
 357         }
 358
 359         return rc;
 360 }
 361
 362 int backend_num( Backend *be )
 363 {
 364         int i;
 365
 366         if( be == NULL ) return -1;
 367
 368         for( i = 0; i < nBackendDB; i++ ) {
 369                 if( be == &backendDB[i] ) return i;
 370         }
 371         return -1;
 372 }
 373
 374 int backend_shutdown( Backend *be )
 375 {
 376         int i;
 377         int rc = 0;
 378
 379         if( be != NULL ) {
 380                 /* shutdown a specific backend database */
 381
 382                 if ( be->bd_info->bi_nDB == 0 ) {
 383                         /* no database of this type, we never opened it */
 384                         return 0;
 385                 }
 386
 387                 if ( be->bd_info->bi_db_close ) {
 388                         be->bd_info->bi_db_close( be );
 389                 }
 390
 391                 if( be->bd_info->bi_close ) {
 392                         be->bd_info->bi_close( be->bd_info );
 393                 }
 394
 395                 return 0;
 396         }
 397
 398         /* close each backend database */
 399         for( i = 0; i < nBackendDB; i++ ) {
 400                 if ( backendDB[i].bd_info->bi_db_close ) {
 401                         backendDB[i].bd_info->bi_db_close(
 402                                 &backendDB[i] );
 403                 }
 404
 405                 if(rc != 0) {
 406                         Debug( LDAP_DEBUG_ANY,
 407                                 "backend_close: bi_db_close %s failed!\n",
 408                                 backendDB[i].be_type, 0, 0 );
 409                 }
 410         }
 411
 412         /* close each backend type */
 413         for( i = 0; i < nBackendInfo; i++ ) {
 414                 if( backendInfo[i].bi_nDB == 0 ) {
 415                         /* no database of this type */
 416                         continue;
 417                 }
 418
 419                 if( backendInfo[i].bi_close ) {
 420                         backendInfo[i].bi_close(
 421                                 &backendInfo[i] );
 422                 }
 423         }
 424
 425         /* close frontend, if required */
 426         if ( frontendDB->bd_info->bi_db_close ) {
 427                 rc = frontendDB->bd_info->bi_db_close ( frontendDB );
 428                 if ( rc != 0 ) {
 429                         Debug( LDAP_DEBUG_ANY,
 430                                 "backend_startup: bi_db_close(frontend) failed! (%d)\n",
 431                                 rc, 0, 0 );
 432                 }
 433         }
 434
 435         return 0;
 436 }
 437
 438 int backend_destroy(void)
 439 {
 440         int i;
 441         BackendDB *bd;
 442         struct slap_csn_entry *csne;
 443
 444         ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 );
 445
 446         /* destroy each backend database */
 447         for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
 448
 449                 if ( bd->be_syncinfo ) {
 450                         syncinfo_free( bd->be_syncinfo );
 451                 }
 452
 453                 if ( bd->be_pending_csn_list ) {
 454                         csne = LDAP_TAILQ_FIRST( bd->be_pending_csn_list );
 455                         while ( csne ) {
 456                                 struct slap_csn_entry *tmp_csne = csne;
 457
 458                                 LDAP_TAILQ_REMOVE( bd->be_pending_csn_list, csne, ce_csn_link );
 459                                 ch_free( csne->ce_csn.bv_val );
 460                                 csne = LDAP_TAILQ_NEXT( csne, ce_csn_link );
 461                                 ch_free( tmp_csne );
 462                         }
 463                 }
 464
 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         free( backendDB );
 482
 483         /* destroy each backend type */
 484         for( i = 0; i < nBackendInfo; i++ ) {
 485                 if( backendInfo[i].bi_destroy ) {
 486                         backendInfo[i].bi_destroy(
 487                                 &backendInfo[i] );
 488                 }
 489         }
 490
 491 #ifdef SLAPD_MODULES
 492         if (backendInfo != slap_binfo) {
 493            free(backendInfo);
 494         }
 495 #endif /* SLAPD_MODULES */
 496
 497         nBackendInfo = 0;
 498         backendInfo = NULL;
 499
 500         /* destroy frontend database */
 501         bd = frontendDB;
 502         if ( bd ) {
 503                 if ( bd->bd_info->bi_db_destroy ) {
 504                         bd->bd_info->bi_db_destroy( bd );
 505                 }
 506                 ber_bvarray_free( bd->be_suffix );
 507                 ber_bvarray_free( bd->be_nsuffix );
 508                 if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
 509                         free( bd->be_rootdn.bv_val );
 510                 }
 511                 if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
 512                         free( bd->be_rootndn.bv_val );
 513                 }
 514                 if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
 515                         free( bd->be_rootpw.bv_val );
 516                 }
 517                 acl_destroy( bd->be_acl, frontendDB->be_acl );
 518         }
 519
 520         return 0;
 521 }
 522
 523 BackendInfo* backend_info(const char *type)
 524 {
 525         int i;
 526
 527         /* search for the backend type */
 528         for( i = 0; i < nBackendInfo; i++ ) {
 529                 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
 530                         return &backendInfo[i];
 531                 }
 532         }
 533
 534         return NULL;
 535 }
 536
 537
 538 BackendDB *
 539 backend_db_init(
 540     const char  *type )
 541 {
 542         Backend *be;
 543         BackendInfo *bi = backend_info(type);
 544         int     rc = 0;
 545
 546         if( bi == NULL ) {
 547                 fprintf( stderr, "Unrecognized database type (%s)\n", type );
 548                 return NULL;
 549         }
 550
 551         be = backendDB;
 552
 553         backendDB = (BackendDB *) ch_realloc(
 554                         (char *) backendDB,
 555                     (nBackendDB + 1) * sizeof(Backend) );
 556
 557         memset( &backendDB[nbackends], '\0', sizeof(Backend) );
 558
 559         /* did realloc move our table? if so, fix up dependent pointers */
 560         if ( be != backendDB ) {
 561                 int i;
 562                 for ( i=0, be=backendDB; i<nbackends; i++, be++ ) {
 563                         be->be_pcl_mutexp = &be->be_pcl_mutex;
 564                 }
 565         }
 566
 567         be = &backends[nbackends++];
 568
 569         be->bd_info = bi;
 570
 571         be->be_def_limit = frontendDB->be_def_limit;
 572         be->be_dfltaccess = frontendDB->be_dfltaccess;
 573
 574         be->be_restrictops = frontendDB->be_restrictops;
 575         be->be_requires = frontendDB->be_requires;
 576         be->be_ssf_set = frontendDB->be_ssf_set;
 577
 578         be->be_pcl_mutexp = &be->be_pcl_mutex;
 579         ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
 580
 581         /* assign a default depth limit for alias deref */
 582         be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
 583
 584         if ( bi->bi_db_init ) {
 585                 rc = bi->bi_db_init( be );
 586         }
 587
 588         if ( rc != 0 ) {
 589                 fprintf( stderr, "database init failed (%s)\n", type );
 590                 nbackends--;
 591                 return NULL;
 592         }
 593
 594         bi->bi_nDB++;
 595         return( be );
 596 }
 597
 598 void
 599 be_db_close( void )
 600 {
 601         int     i;
 602
 603         for ( i = 0; i < nbackends; i++ ) {
 604                 if ( backends[i].bd_info->bi_db_close ) {
 605                         (*backends[i].bd_info->bi_db_close)( &backends[i] );
 606                 }
 607         }
 608
 609         if ( frontendDB->bd_info->bi_db_close ) {
 610                 (*frontendDB->bd_info->bi_db_close)( frontendDB );
 611         }
 612
 613 }
 614
 615 Backend *
 616 select_backend(
 617         struct berval * dn,
 618         int manageDSAit,
 619         int noSubs )
 620 {
 621         int             i, j;
 622         ber_len_t       len, dnlen = dn->bv_len;
 623         Backend         *be = NULL;
 624
 625         for ( i = 0; i < nbackends; i++ ) {
 626                 if ( backends[i].be_nsuffix == NULL ) {
 627                         continue;
 628                 }
 629
 630                 for ( j = 0; !BER_BVISNULL( &backends[i].be_nsuffix[j] ); j++ )
 631                 {
 632                         if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) )
 633                                 && noSubs )
 634                         {
 635                                 continue;
 636                         }
 637
 638                         len = backends[i].be_nsuffix[j].bv_len;
 639
 640                         if ( len > dnlen ) {
 641                                 /* suffix is longer than DN */
 642                                 continue;
 643                         }
 644
 645                         /*
 646                          * input DN is normalized, so the separator check
 647                          * need not look at escaping
 648                          */
 649                         if ( len && len < dnlen &&
 650                                 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
 651                         {
 652                                 continue;
 653                         }
 654
 655                         if ( strcmp( backends[i].be_nsuffix[j].bv_val,
 656                                 &dn->bv_val[dnlen-len] ) == 0 )
 657                         {
 658                                 if( be == NULL ) {
 659                                         be = &backends[i];
 660
 661                                         if( manageDSAit && len == dnlen &&
 662                                                 !SLAP_GLUE_SUBORDINATE( be ) ) {
 663                                                 continue;
 664                                         }
 665                                 } else {
 666                                         be = &backends[i];
 667                                 }
 668                                 return be;
 669                         }
 670                 }
 671         }
 672
 673         return be;
 674 }
 675
 676 int
 677 be_issuffix(
 678     Backend *be,
 679     struct berval *bvsuffix )
 680 {
 681         int     i;
 682
 683         if ( be->be_nsuffix == NULL ) {
 684                 return 0;
 685         }
 686
 687         for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
 688                 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
 689                         return 1;
 690                 }
 691         }
 692
 693         return 0;
 694 }
 695
 696 int
 697 be_isroot_dn( Backend *be, struct berval *ndn )
 698 {
 699         if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
 700                 return 0;
 701         }
 702
 703         return dn_match( &be->be_rootndn, ndn );
 704 }
 705
 706 int
 707 be_slurp_update( Operation *op )
 708 {
 709         return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
 710                 be_isupdate_dn( op->o_bd, &op->o_ndn ) );
 711 }
 712
 713 int
 714 be_shadow_update( Operation *op )
 715 {
 716         return ( SLAP_SYNC_SHADOW( op->o_bd ) ||
 717                 ( SLAP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn ) ) );
 718 }
 719
 720 int
 721 be_isupdate_dn( Backend *be, struct berval *ndn )
 722 {
 723         if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_update_ndn ) ) {
 724                 return 0;
 725         }
 726
 727         return dn_match( &be->be_update_ndn, ndn );
 728 }
 729
 730 struct berval *
 731 be_root_dn( Backend *be )
 732 {
 733         return &be->be_rootdn;
 734 }
 735
 736 int
 737 be_isroot( Operation *op )
 738 {
 739         return be_isroot_dn( op->o_bd, &op->o_ndn );
 740 }
 741
 742 int
 743 be_isroot_pw( Operation *op )
 744 {
 745         int result;
 746
 747         if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 748                 return 0;
 749         }
 750
 751         if ( BER_BVISEMPTY( &op->o_bd->be_rootpw ) ) {
 752                 return 0;
 753         }
 754
 755 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 756         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 757 #ifdef SLAPD_SPASSWD
 758         lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 759 #endif
 760 #endif
 761
 762         result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
 763
 764 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
 765 #ifdef SLAPD_SPASSWD
 766         lutil_passwd_sasl_conn = NULL;
 767 #endif
 768         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 769 #endif
 770
 771         return result == 0;
 772 }
 773
 774 int
 775 be_entry_release_rw(
 776         Operation *op,
 777         Entry *e,
 778         int rw )
 779 {
 780         if ( op->o_bd->be_release ) {
 781                 /* free and release entry from backend */
 782                 return op->o_bd->be_release( op, e, rw );
 783         } else {
 784                 /* free entry */
 785                 entry_free( e );
 786                 return 0;
 787         }
 788 }
 789
 790 int
 791 backend_unbind( Operation *op, SlapReply *rs )
 792 {
 793         int             i;
 794
 795         for ( i = 0; i < nbackends; i++ ) {
 796 #if defined( LDAP_SLAPI )
 797                 if ( op->o_pb ) {
 798                         int rc;
 799                         if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op );
 800                         slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] );
 801                         rc = slapi_int_call_plugins( &backends[i],
 802                                 SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb );
 803                         if ( rc < 0 ) {
 804                                 /*
 805                                  * A preoperation plugin failure will abort the
 806                                  * entire operation.
 807                                  */
 808                                 Debug(LDAP_DEBUG_TRACE,
 809                                         "do_bind: Unbind preoperation plugin failed\n",
 810                                         0, 0, 0);
 811                                 return 0;
 812                         }
 813                 }
 814 #endif /* defined( LDAP_SLAPI ) */
 815
 816                 if ( backends[i].be_unbind ) {
 817                         op->o_bd = &backends[i];
 818                         (*backends[i].be_unbind)( op, rs );
 819                 }
 820
 821 #if defined( LDAP_SLAPI )
 822                 if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i],
 823                         SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 )
 824                 {
 825                         Debug(LDAP_DEBUG_TRACE,
 826                                 "do_unbind: Unbind postoperation plugins failed\n",
 827                                 0, 0, 0);
 828                 }
 829 #endif /* defined( LDAP_SLAPI ) */
 830         }
 831
 832         return 0;
 833 }
 834
 835 int
 836 backend_connection_init(
 837         Connection   *conn )
 838 {
 839         int     i;
 840
 841         for ( i = 0; i < nbackends; i++ ) {
 842                 if ( backends[i].be_connection_init ) {
 843                         (*backends[i].be_connection_init)( &backends[i], conn);
 844                 }
 845         }
 846
 847         return 0;
 848 }
 849
 850 int
 851 backend_connection_destroy(
 852         Connection   *conn )
 853 {
 854         int     i;
 855
 856         for ( i = 0; i < nbackends; i++ ) {
 857                 if ( backends[i].be_connection_destroy ) {
 858                         (*backends[i].be_connection_destroy)( &backends[i], conn);
 859                 }
 860         }
 861
 862         return 0;
 863 }
 864
 865 static int
 866 backend_check_controls(
 867         Operation *op,
 868         SlapReply *rs )
 869 {
 870         LDAPControl **ctrls = op->o_ctrls;
 871         rs->sr_err = LDAP_SUCCESS;
 872
 873         if( ctrls ) {
 874                 for( ; *ctrls != NULL ; ctrls++ ) {
 875                         int cid;
 876
 877                         switch ( slap_global_control( op, (*ctrls)->ldctl_oid, &cid ) ) {
 878                         case LDAP_CONTROL_NOT_FOUND:
 879                                 /* unrecognized control */
 880                                 if ( (*ctrls)->ldctl_iscritical ) {
 881                                         /* should not be reachable */
 882                                         Debug( LDAP_DEBUG_ANY,
 883                                                 "backend_check_controls: unrecognized control: %s\n",
 884                                                 (*ctrls)->ldctl_oid, 0, 0 );
 885                                         assert( 0 );
 886                                 }
 887                                 break;
 888
 889                         case LDAP_COMPARE_FALSE:
 890                                 if ( !op->o_bd->be_ctrls[ cid ] )
 891                                 {
 892                                         /* Per RFC 2251 (and LDAPBIS discussions), if the control
 893                                          * is recognized and appropriate for the operation (which
 894                                          * we've already verified), then the server should make
 895                                          * use of the control when performing the operation.
 896                                          *
 897                                          * Here we find that operation extended by the control
 898                                          * is not unavailable in a particular context, hence the
 899                                          * return of unwillingToPerform.
 900                                          */
 901                                         rs->sr_text = "control unavailable in context";
 902                                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 903                                         goto done;
 904                                 }
 905                                 break;
 906
 907                         case LDAP_COMPARE_TRUE:
 908                                 break;
 909
 910                         default:
 911                                 /* unreachable */
 912                                 rs->sr_err = "unable to check control";
 913                                 rs->sr_err = LDAP_OTHER;
 914                                 goto done;
 915                         }
 916                 }
 917         }
 918
 919 done:;
 920         return rs->sr_err;
 921 }
 922
 923 int
 924 backend_check_restrictions(
 925         Operation *op,
 926         SlapReply *rs,
 927         struct berval *opdata )
 928 {
 929         slap_mask_t restrictops;
 930         slap_mask_t requires;
 931         slap_mask_t opflag;
 932         slap_mask_t exopflag = 0;
 933         slap_ssf_set_t *ssf;
 934         int updateop = 0;
 935         int starttls = 0;
 936         int session = 0;
 937
 938         if ( op->o_bd ) {
 939                 int     rc = SLAP_CB_CONTINUE;
 940
 941                 if ( op->o_bd->be_chk_controls ) {
 942                         rc = ( *op->o_bd->be_chk_controls )( op, rs );
 943                 }
 944
 945                 if ( rc == SLAP_CB_CONTINUE ) {
 946                         rc = backend_check_controls( op, rs );
 947                 }
 948
 949                 if ( rc != LDAP_SUCCESS ) {
 950                         return rs->sr_err;
 951                 }
 952
 953                 restrictops = op->o_bd->be_restrictops;
 954                 requires = op->o_bd->be_requires;
 955                 ssf = &op->o_bd->be_ssf_set;
 956
 957         } else {
 958                 restrictops = frontendDB->be_restrictops;
 959                 requires = frontendDB->be_requires;
 960                 ssf = &frontendDB->be_ssf_set;
 961         }
 962
 963         switch( op->o_tag ) {
 964         case LDAP_REQ_ADD:
 965                 opflag = SLAP_RESTRICT_OP_ADD;
 966                 updateop++;
 967                 break;
 968         case LDAP_REQ_BIND:
 969                 opflag = SLAP_RESTRICT_OP_BIND;
 970                 session++;
 971                 break;
 972         case LDAP_REQ_COMPARE:
 973                 opflag = SLAP_RESTRICT_OP_COMPARE;
 974                 break;
 975         case LDAP_REQ_DELETE:
 976                 updateop++;
 977                 opflag = SLAP_RESTRICT_OP_DELETE;
 978                 break;
 979         case LDAP_REQ_EXTENDED:
 980                 opflag = SLAP_RESTRICT_OP_EXTENDED;
 981
 982                 if( !opdata ) {
 983                         /* treat unspecified as a modify */
 984                         opflag = SLAP_RESTRICT_OP_MODIFY;
 985                         updateop++;
 986                         break;
 987                 }
 988
 989                 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
 990                         session++;
 991                         starttls++;
 992                         exopflag = SLAP_RESTRICT_EXOP_START_TLS;
 993                         break;
 994                 }
 995
 996                 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
 997                         exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
 998                         break;
 999                 }
1000
1001                 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
1002                         exopflag = SLAP_RESTRICT_EXOP_CANCEL;
1003                         break;
1004                 }
1005
1006                 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
1007                         exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
1008                         updateop++;
1009                         break;
1010                 }
1011
1012                 /* treat everything else as a modify */
1013                 opflag = SLAP_RESTRICT_OP_MODIFY;
1014                 updateop++;
1015                 break;
1016
1017         case LDAP_REQ_MODIFY:
1018                 updateop++;
1019                 opflag = SLAP_RESTRICT_OP_MODIFY;
1020                 break;
1021         case LDAP_REQ_RENAME:
1022                 updateop++;
1023                 opflag = SLAP_RESTRICT_OP_RENAME;
1024                 break;
1025         case LDAP_REQ_SEARCH:
1026                 opflag = SLAP_RESTRICT_OP_SEARCH;
1027                 break;
1028         case LDAP_REQ_UNBIND:
1029                 session++;
1030                 opflag = 0;
1031                 break;
1032         default:
1033                 rs->sr_text = "restrict operations internal error";
1034                 rs->sr_err = LDAP_OTHER;
1035                 return rs->sr_err;
1036         }
1037
1038         if ( !starttls ) {
1039                 /* these checks don't apply to StartTLS */
1040
1041                 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1042                 if( op->o_transport_ssf < ssf->sss_transport ) {
1043                         rs->sr_text = op->o_transport_ssf
1044                                 ? "stronger transport confidentiality required"
1045                                 : "transport confidentiality required";
1046                         return rs->sr_err;
1047                 }
1048
1049                 if( op->o_tls_ssf < ssf->sss_tls ) {
1050                         rs->sr_text = op->o_tls_ssf
1051                                 ? "stronger TLS confidentiality required"
1052                                 : "TLS confidentiality required";
1053                         return rs->sr_err;
1054                 }
1055
1056
1057                 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1058                         /* simple bind specific check */
1059                         if( op->o_ssf < ssf->sss_simple_bind ) {
1060                                 rs->sr_text = op->o_ssf
1061                                         ? "stronger confidentiality required"
1062                                         : "confidentiality required";
1063                                 return rs->sr_err;
1064                         }
1065                 }
1066
1067                 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1068                         /* these checks don't apply to SASL bind */
1069
1070                         if( op->o_sasl_ssf < ssf->sss_sasl ) {
1071                                 rs->sr_text = op->o_sasl_ssf
1072                                         ? "stronger SASL confidentiality required"
1073                                         : "SASL confidentiality required";
1074                                 return rs->sr_err;
1075                         }
1076
1077                         if( op->o_ssf < ssf->sss_ssf ) {
1078                                 rs->sr_text = op->o_ssf
1079                                         ? "stronger confidentiality required"
1080                                         : "confidentiality required";
1081                                 return rs->sr_err;
1082                         }
1083                 }
1084
1085                 if( updateop ) {
1086                         if( op->o_transport_ssf < ssf->sss_update_transport ) {
1087                                 rs->sr_text = op->o_transport_ssf
1088                                         ? "stronger transport confidentiality required for update"
1089                                         : "transport confidentiality required for update";
1090                                 return rs->sr_err;
1091                         }
1092
1093                         if( op->o_tls_ssf < ssf->sss_update_tls ) {
1094                                 rs->sr_text = op->o_tls_ssf
1095                                         ? "stronger TLS confidentiality required for update"
1096                                         : "TLS confidentiality required for update";
1097                                 return rs->sr_err;
1098                         }
1099
1100                         if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1101                                 rs->sr_text = op->o_sasl_ssf
1102                                         ? "stronger SASL confidentiality required for update"
1103                                         : "SASL confidentiality required for update";
1104                                 return rs->sr_err;
1105                         }
1106
1107                         if( op->o_ssf < ssf->sss_update_ssf ) {
1108                                 rs->sr_text = op->o_ssf
1109                                         ? "stronger confidentiality required for update"
1110                                         : "confidentiality required for update";
1111                                 return rs->sr_err;
1112                         }
1113
1114                         if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1115                                 BER_BVISEMPTY( &op->o_ndn ) )
1116                         {
1117                                 rs->sr_text = "modifications require authentication";
1118                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1119                                 return rs->sr_err;
1120                         }
1121
1122 #ifdef SLAP_X_LISTENER_MOD
1123                         if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( !BER_BVISEMPTY( &op->o_ndn ) ? S_IWUSR : S_IWOTH ) ) ) {
1124                                 /* no "w" mode means readonly */
1125                                 rs->sr_text = "modifications not allowed on this listener";
1126                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1127                                 return rs->sr_err;
1128                         }
1129 #endif /* SLAP_X_LISTENER_MOD */
1130                 }
1131         }
1132
1133         if ( !session ) {
1134                 /* these checks don't apply to Bind, StartTLS, or Unbind */
1135
1136                 if( requires & SLAP_REQUIRE_STRONG ) {
1137                         /* should check mechanism */
1138                         if( ( op->o_transport_ssf < ssf->sss_transport
1139                                 && op->o_authtype == LDAP_AUTH_SIMPLE )
1140                                 || BER_BVISEMPTY( &op->o_dn ) )
1141                         {
1142                                 rs->sr_text = "strong(er) authentication required";
1143                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1144                                 return rs->sr_err;
1145                         }
1146                 }
1147
1148                 if( requires & SLAP_REQUIRE_SASL ) {
1149                         if( op->o_authtype != LDAP_AUTH_SASL || BER_BVISEMPTY( &op->o_dn ) ) {
1150                                 rs->sr_text = "SASL authentication required";
1151                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1152                                 return rs->sr_err;
1153                         }
1154                 }
1155
1156                 if( requires & SLAP_REQUIRE_AUTHC ) {
1157                         if( BER_BVISEMPTY( &op->o_dn ) ) {
1158                                 rs->sr_text = "authentication required";
1159                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1160                                 return rs->sr_err;
1161                         }
1162                 }
1163
1164                 if( requires & SLAP_REQUIRE_BIND ) {
1165                         int version;
1166                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1167                         version = op->o_conn->c_protocol;
1168                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1169
1170                         if( !version ) {
1171                                 /* no bind has occurred */
1172                                 rs->sr_text = "BIND required";
1173                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1174                                 return rs->sr_err;
1175                         }
1176                 }
1177
1178                 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1179                         if( op->o_protocol < LDAP_VERSION3 ) {
1180                                 /* no bind has occurred */
1181                                 rs->sr_text = "operation restricted to LDAPv3 clients";
1182                                 rs->sr_err = LDAP_OPERATIONS_ERROR;
1183                                 return rs->sr_err;
1184                         }
1185                 }
1186
1187 #ifdef SLAP_X_LISTENER_MOD
1188                 if ( !starttls && BER_BVISEMPTY( &op->o_dn ) ) {
1189                         if ( op->o_conn->c_listener &&
1190                                 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1191                 {
1192                                 /* no "x" mode means bind required */
1193                                 rs->sr_text = "bind required on this listener";
1194                                 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1195                                 return rs->sr_err;
1196                         }
1197                 }
1198
1199                 if ( !starttls && !updateop ) {
1200                         if ( op->o_conn->c_listener &&
1201                                 !( op->o_conn->c_listener->sl_perms &
1202                                         ( !BER_BVISEMPTY( &op->o_dn ) ? S_IRUSR : S_IROTH )))
1203                         {
1204                                 /* no "r" mode means no read */
1205                                 rs->sr_text = "read not allowed on this listener";
1206                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1207                                 return rs->sr_err;
1208                         }
1209                 }
1210 #endif /* SLAP_X_LISTENER_MOD */
1211
1212         }
1213
1214         if( ( restrictops & opflag )
1215                         || ( exopflag && ( restrictops & exopflag ) ) ) {
1216                 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1217                         rs->sr_text = "read operations restricted";
1218                 } else if ( restrictops & exopflag ) {
1219                         rs->sr_text = "extended operation restricted";
1220                 } else {
1221                         rs->sr_text = "operation restricted";
1222                 }
1223                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1224                 return rs->sr_err;
1225         }
1226
1227         rs->sr_err = LDAP_SUCCESS;
1228         return rs->sr_err;
1229 }
1230
1231 int backend_check_referrals( Operation *op, SlapReply *rs )
1232 {
1233         rs->sr_err = LDAP_SUCCESS;
1234
1235         if( op->o_bd->be_chk_referrals ) {
1236                 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1237
1238                 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1239                         send_ldap_result( op, rs );
1240                 }
1241         }
1242
1243         return rs->sr_err;
1244 }
1245
1246 int
1247 be_entry_get_rw(
1248         Operation *op,
1249         struct berval *ndn,
1250         ObjectClass *oc,
1251         AttributeDescription *at,
1252         int rw,
1253         Entry **e )
1254 {
1255         int rc;
1256
1257         *e = NULL;
1258
1259         if (op->o_bd == NULL) {
1260                 rc = LDAP_NO_SUCH_OBJECT;
1261         } else if ( op->o_bd->be_fetch ) {
1262                 rc = ( op->o_bd->be_fetch )( op, ndn,
1263                         oc, at, rw, e );
1264         } else {
1265                 rc = LDAP_UNWILLING_TO_PERFORM;
1266         }
1267         return rc;
1268 }
1269
1270 int
1271 backend_group(
1272         Operation *op,
1273         Entry   *target,
1274         struct berval *gr_ndn,
1275         struct berval *op_ndn,
1276         ObjectClass *group_oc,
1277         AttributeDescription *group_at )
1278 {
1279         Entry *e;
1280         Attribute *a;
1281         int rc;
1282         GroupAssertion *g;
1283         Backend *be = op->o_bd;
1284
1285         if ( op->o_abandon ) return SLAPD_ABANDON;
1286
1287         op->o_bd = select_backend( gr_ndn, 0, 0 );
1288
1289         for ( g = op->o_groups; g; g = g->ga_next ) {
1290                 if ( g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1291                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len )
1292                 {
1293                         continue;
1294                 }
1295                 if ( strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0 ) {
1296                         break;
1297                 }
1298         }
1299
1300         if ( g ) {
1301                 rc = g->ga_res;
1302                 goto done;
1303         }
1304
1305         if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1306                 e = target;
1307                 rc = 0;
1308         } else {
1309                 rc = be_entry_get_rw( op, gr_ndn, group_oc, group_at, 0, &e );
1310         }
1311         if ( e ) {
1312 #ifdef LDAP_SLAPI
1313                 if ( op->o_pb != NULL ) {
1314                         init_group_pblock( op, target, e, op_ndn, group_at );
1315
1316                         rc = call_group_preop_plugins( op );
1317                         if ( rc == LDAP_SUCCESS ) {
1318                                 goto done;
1319                         }
1320                 }
1321 #endif /* LDAP_SLAPI */
1322
1323                 a = attr_find( e->e_attrs, group_at );
1324                 if ( a ) {
1325                         /* If the attribute is a subtype of labeledURI, treat this as
1326                          * a dynamic group ala groupOfURLs
1327                          */
1328                         if (is_at_subtype( group_at->ad_type,
1329                                 slap_schema.si_ad_labeledURI->ad_type ) )
1330                         {
1331                                 int i;
1332                                 LDAPURLDesc *ludp;
1333                                 struct berval bv, nbase;
1334                                 Filter *filter;
1335                                 Entry *user;
1336                                 Backend *b2 = op->o_bd;
1337
1338                                 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1339                                         user = target;
1340                                 } else {
1341                                         op->o_bd = select_backend( op_ndn, 0, 0 );
1342                                         rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user );
1343                                 }
1344
1345                                 if ( rc == 0 ) {
1346                                         rc = 1;
1347                                         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
1348                                                 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1349                                                         LDAP_URL_SUCCESS )
1350                                                 {
1351                                                         continue;
1352                                                 }
1353                                                 BER_BVZERO( &nbase );
1354                                                 /* host part must be empty */
1355                                                 /* attrs and extensions parts must be empty */
1356                                                 if ( ( ludp->lud_host && *ludp->lud_host ) ||
1357                                                         ludp->lud_attrs || ludp->lud_exts )
1358                                                 {
1359                                                         goto loopit;
1360                                                 }
1361                                                 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1362                                                 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1363                                                         op->o_tmpmemctx ) != LDAP_SUCCESS )
1364                                                 {
1365                                                         goto loopit;
1366                                                 }
1367                                                 switch ( ludp->lud_scope ) {
1368                                                 case LDAP_SCOPE_BASE:
1369                                                         if ( !dn_match( &nbase, op_ndn ) ) {
1370                                                                 goto loopit;
1371                                                         }
1372                                                         break;
1373                                                 case LDAP_SCOPE_ONELEVEL:
1374                                                         dnParent( op_ndn, &bv );
1375                                                         if ( !dn_match( &nbase, &bv ) ) {
1376                                                                 goto loopit;
1377                                                         }
1378                                                         break;
1379                                                 case LDAP_SCOPE_SUBTREE:
1380                                                         if ( !dnIsSuffix( op_ndn, &nbase ) ) {
1381                                                                 goto loopit;
1382                                                         }
1383                                                         break;
1384 #ifdef LDAP_SCOPE_SUBORDINATE
1385                                                 case LDAP_SCOPE_SUBORDINATE:
1386                                                         if ( dn_match( &nbase, op_ndn ) ||
1387                                                                 !dnIsSuffix( op_ndn, &nbase ) )
1388                                                         {
1389                                                                 goto loopit;
1390                                                         }
1391 #endif
1392                                                 }
1393                                                 filter = str2filter_x( op, ludp->lud_filter );
1394                                                 if ( filter ) {
1395                                                         if ( test_filter( NULL, user, filter ) ==
1396                                                                 LDAP_COMPARE_TRUE )
1397                                                         {
1398                                                                 rc = 0;
1399                                                         }
1400                                                         filter_free_x( op, filter );
1401                                                 }
1402 loopit:
1403                                                 ldap_free_urldesc( ludp );
1404                                                 if ( !BER_BVISNULL( &nbase ) ) {
1405                                                         op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1406                                                 }
1407                                                 if ( rc == 0 ) break;
1408                                         }
1409                                         if ( user != target ) {
1410                                                 be_entry_release_r( op, user );
1411                                         }
1412                                 }
1413                                 op->o_bd = b2;
1414                         } else {
1415                                 rc = value_find_ex( group_at,
1416                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1417                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1418                                 a->a_nvals, op_ndn, op->o_tmpmemctx );
1419                         }
1420                 } else {
1421                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1422                 }
1423                 if (e != target ) {
1424                         be_entry_release_r( op, e );
1425                 }
1426         } else {
1427                 rc = LDAP_NO_SUCH_OBJECT;
1428         }
1429
1430 #ifdef LDAP_SLAPI
1431         if ( op->o_pb ) call_group_postop_plugins( op );
1432 #endif /* LDAP_SLAPI */
1433
1434         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1435                 g = op->o_tmpalloc( sizeof( GroupAssertion ) + gr_ndn->bv_len,
1436                         op->o_tmpmemctx );
1437                 g->ga_be = op->o_bd;
1438                 g->ga_oc = group_oc;
1439                 g->ga_at = group_at;
1440                 g->ga_res = rc;
1441                 g->ga_len = gr_ndn->bv_len;
1442                 strcpy( g->ga_ndn, gr_ndn->bv_val );
1443                 g->ga_next = op->o_groups;
1444                 op->o_groups = g;
1445         }
1446 done:
1447         op->o_bd = be;
1448         return rc;
1449 }
1450
1451 #ifdef LDAP_SLAPI
1452 static int backend_compute_output_attr(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e)
1453 {
1454         BerVarray v;
1455         int rc;
1456         BerVarray *vals = (BerVarray *)c->cac_private;
1457         Operation *op = NULL;
1458         int i, j;
1459
1460         slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op );
1461         if ( op == NULL ) {
1462                 return 1;
1463         }
1464
1465         if ( op->o_conn && access_allowed( op,
1466                 e, a->a_desc, NULL, ACL_AUTH,
1467                 &c->cac_acl_state ) == 0 ) {
1468                 return 1;
1469         }
1470
1471         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) ;
1472
1473         v = op->o_tmpalloc( sizeof(struct berval) * (i+1),
1474                 op->o_tmpmemctx );
1475         for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
1476                 if ( op->o_conn && access_allowed( op,
1477                         e, a->a_desc,
1478                         &a->a_nvals[i],
1479                         ACL_AUTH, &c->cac_acl_state ) == 0 ) {
1480                         continue;
1481                 }
1482                 ber_dupbv_x( &v[j],
1483                         &a->a_nvals[i], op->o_tmpmemctx );
1484                 if ( !BER_BVISNULL( &v[j] ) ) {
1485                         j++;
1486                 }
1487         }
1488
1489         if ( j == 0 ) {
1490                 op->o_tmpfree( v, op->o_tmpmemctx );
1491                 *vals = NULL;
1492                 rc = 1;
1493         } else {
1494                 BER_BVZERO( &v[j] );
1495                 *vals = v;
1496                 rc = 0;
1497         }
1498
1499         return rc;
1500 }
1501 #endif /* LDAP_SLAPI */
1502
1503 int
1504 backend_attribute(
1505         Operation *op,
1506         Entry   *target,
1507         struct berval   *edn,
1508         AttributeDescription *entry_at,
1509         BerVarray *vals,
1510         slap_access_t access )
1511 {
1512         Entry                   *e = NULL;
1513         Attribute               *a = NULL;
1514         int                     freeattr = 0, i, j, rc = LDAP_SUCCESS;
1515         AccessControlState      acl_state = ACL_STATE_INIT;
1516         Backend                 *be = op->o_bd;
1517
1518         op->o_bd = select_backend( edn, 0, 0 );
1519
1520         if ( target && dn_match( &target->e_nname, edn ) ) {
1521                 e = target;
1522
1523         } else {
1524                 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1525         }
1526
1527         if ( e ) {
1528                 a = attr_find( e->e_attrs, entry_at );
1529                 if ( a == NULL ) {
1530                         SlapReply       rs = { 0 };
1531                         AttributeName   anlist[ 2 ];
1532
1533                         anlist[ 0 ].an_name = entry_at->ad_cname;
1534                         anlist[ 0 ].an_desc = entry_at;
1535                         BER_BVZERO( &anlist[ 1 ].an_name );
1536                         rs.sr_attrs = anlist;
1537
1538                         /* NOTE: backend_operational() is also called
1539                          * when returning results, so it's supposed
1540                          * to do no harm to entries */
1541                         rs.sr_entry = e;
1542                         rc = backend_operational( op, &rs );
1543                         rs.sr_entry = NULL;
1544
1545                         if ( rc == LDAP_SUCCESS ) {
1546                                 if ( rs.sr_operational_attrs ) {
1547                                         freeattr = 1;
1548                                         a = rs.sr_operational_attrs;
1549
1550                                 } else {
1551                                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1552                                 }
1553                         }
1554                 }
1555
1556                 if ( a ) {
1557                         BerVarray v;
1558
1559                         if ( op->o_conn && access > ACL_NONE && access_allowed( op,
1560                                 e, entry_at, NULL, access,
1561                                 &acl_state ) == 0 ) {
1562                                 rc = LDAP_INSUFFICIENT_ACCESS;
1563                                 goto freeit;
1564                         }
1565
1566                         for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1567                                 ;
1568
1569                         v = op->o_tmpalloc( sizeof(struct berval) * ( i + 1 ),
1570                                 op->o_tmpmemctx );
1571                         for ( i = 0,j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1572                         {
1573                                 if ( op->o_conn && access > ACL_NONE &&
1574                                                 access_allowed( op, e,
1575                                                         entry_at,
1576                                                         &a->a_nvals[i],
1577                                                         access,
1578                                                         &acl_state ) == 0 )
1579                                 {
1580                                         continue;
1581                                 }
1582                                 ber_dupbv_x( &v[j], &a->a_nvals[i],
1583                                                 op->o_tmpmemctx );
1584                                 if ( !BER_BVISNULL( &v[j] ) ) {
1585                                         j++;
1586                                 }
1587                         }
1588                         if ( j == 0 ) {
1589                                 op->o_tmpfree( v, op->o_tmpmemctx );
1590                                 *vals = NULL;
1591                                 rc = LDAP_INSUFFICIENT_ACCESS;
1592
1593                         } else {
1594                                 BER_BVZERO( &v[j] );
1595                                 *vals = v;
1596                                 rc = LDAP_SUCCESS;
1597                         }
1598                 }
1599 #ifdef LDAP_SLAPI
1600                 else if ( op->o_pb ) {
1601                         /* try any computed attributes */
1602                         computed_attr_context   ctx;
1603
1604                         slapi_int_pblock_set_operation( op->o_pb, op );
1605
1606                         ctx.cac_pb = op->o_pb;
1607                         ctx.cac_attrs = NULL;
1608                         ctx.cac_userattrs = 0;
1609                         ctx.cac_opattrs = 0;
1610                         ctx.cac_acl_state = acl_state;
1611                         ctx.cac_private = (void *)vals;
1612
1613                         rc = compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr );
1614                         if ( rc == 1 ) {
1615                                 rc = LDAP_INSUFFICIENT_ACCESS;
1616
1617                         } else {
1618                                 rc = LDAP_SUCCESS;
1619                         }
1620                 }
1621 #endif /* LDAP_SLAPI */
1622 freeit:         if ( e != target ) {
1623                         be_entry_release_r( op, e );
1624                 }
1625                 if ( freeattr ) {
1626                         attr_free( a );
1627                 }
1628         }
1629
1630         op->o_bd = be;
1631         return rc;
1632 }
1633
1634 #ifdef LDAP_SLAPI
1635 static int backend_compute_output_attr_access(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e)
1636 {
1637         struct berval   *nval = (struct berval *)c->cac_private;
1638         Operation       *op = NULL;
1639
1640         slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op );
1641         if ( op == NULL ) {
1642                 return 1;
1643         }
1644
1645         return access_allowed( op, e, a->a_desc, nval, ACL_AUTH, NULL ) == 0;
1646 }
1647 #endif /* LDAP_SLAPI */
1648
1649 int
1650 backend_access(
1651         Operation               *op,
1652         Entry                   *target,
1653         struct berval           *edn,
1654         AttributeDescription    *entry_at,
1655         struct berval           *nval,
1656         slap_access_t           access,
1657         slap_mask_t             *mask )
1658 {
1659         Entry           *e = NULL;
1660         int             rc = LDAP_INSUFFICIENT_ACCESS;
1661         Backend         *be = op->o_bd;
1662
1663         /* pedantic */
1664         assert( op );
1665         assert( op->o_conn );
1666         assert( edn );
1667         assert( access > ACL_NONE );
1668
1669         op->o_bd = select_backend( edn, 0, 0 );
1670
1671         if ( target && dn_match( &target->e_nname, edn ) ) {
1672                 e = target;
1673
1674         } else {
1675                 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1676         }
1677
1678         if ( e ) {
1679                 Attribute       *a = NULL;
1680                 int             freeattr = 0;
1681
1682                 if ( entry_at == NULL ) {
1683                         entry_at = slap_schema.si_ad_entry;
1684                 }
1685
1686                 if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children )
1687                 {
1688                         if ( access_allowed_mask( op, e, entry_at,
1689                                         NULL, access, NULL, mask ) == 0 )
1690                         {
1691                                 rc = LDAP_INSUFFICIENT_ACCESS;
1692
1693                         } else {
1694                                 rc = LDAP_SUCCESS;
1695                         }
1696
1697                 } else {
1698                         a = attr_find( e->e_attrs, entry_at );
1699                         if ( a == NULL ) {
1700                                 SlapReply       rs = { 0 };
1701                                 AttributeName   anlist[ 2 ];
1702
1703                                 anlist[ 0 ].an_name = entry_at->ad_cname;
1704                                 anlist[ 0 ].an_desc = entry_at;
1705                                 BER_BVZERO( &anlist[ 1 ].an_name );
1706                                 rs.sr_attrs = anlist;
1707
1708                                 rs.sr_attr_flags = slap_attr_flags( rs.sr_attrs );
1709
1710                                 /* NOTE: backend_operational() is also called
1711                                  * when returning results, so it's supposed
1712                                  * to do no harm to entries */
1713                                 rs.sr_entry = e;
1714                                 rc = backend_operational( op, &rs );
1715                                 rs.sr_entry = NULL;
1716
1717                                 if ( rc == LDAP_SUCCESS ) {
1718                                         if ( rs.sr_operational_attrs ) {
1719                                                 freeattr = 1;
1720                                                 a = rs.sr_operational_attrs;
1721
1722                                         } else {
1723                                                 rc = LDAP_NO_SUCH_OBJECT;
1724                                         }
1725                                 }
1726                         }
1727
1728                         if ( a ) {
1729                                 if ( access_allowed_mask( op, e, entry_at,
1730                                                 nval, access, NULL, mask ) == 0 )
1731                                 {
1732                                         rc = LDAP_INSUFFICIENT_ACCESS;
1733                                         goto freeit;
1734                                 }
1735                                 rc = LDAP_SUCCESS;
1736                         }
1737 #ifdef LDAP_SLAPI
1738                         else if ( op->o_pb ) {
1739                                 /* try any computed attributes */
1740                                 computed_attr_context   ctx;
1741
1742                                 slapi_int_pblock_set_operation( op->o_pb, op );
1743
1744                                 ctx.cac_pb = op->o_pb;
1745                                 ctx.cac_attrs = NULL;
1746                                 ctx.cac_userattrs = 0;
1747                                 ctx.cac_opattrs = 0;
1748                                 ctx.cac_private = (void *)nval;
1749
1750                                 rc = compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr_access );
1751                                 if ( rc == 1 ) {
1752                                         rc = LDAP_INSUFFICIENT_ACCESS;
1753
1754                                 } else {
1755                                         rc = LDAP_SUCCESS;
1756                                 }
1757                         }
1758 #endif /* LDAP_SLAPI */
1759                 }
1760 freeit:         if ( e != target ) {
1761                         be_entry_release_r( op, e );
1762                 }
1763                 if ( freeattr ) {
1764                         attr_free( a );
1765                 }
1766         }
1767
1768         op->o_bd = be;
1769         return rc;
1770 }
1771
1772 int backend_operational(
1773         Operation *op,
1774         SlapReply *rs )
1775 {
1776         Attribute       **ap;
1777         int             rc = 0;
1778         BackendDB       *be_orig;
1779
1780         for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1781                 /* just count them */ ;
1782
1783         /*
1784          * If operational attributes (allegedly) are required,
1785          * and the backend supports specific operational attributes,
1786          * add them to the attribute list
1787          */
1788         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
1789                 ad_inlist( slap_schema.si_ad_entryDN, rs->sr_attrs )))
1790         {
1791                 *ap = slap_operational_entryDN( rs->sr_entry );
1792                 ap = &(*ap)->a_next;
1793         }
1794
1795         if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
1796                 ad_inlist( slap_schema.si_ad_subschemaSubentry, rs->sr_attrs )))
1797         {
1798                 *ap = slap_operational_subschemaSubentry( op->o_bd );
1799                 ap = &(*ap)->a_next;
1800         }
1801
1802         /* Let the overlays have a chance at this */
1803         be_orig = op->o_bd;
1804         if ( SLAP_ISOVERLAY( be_orig ))
1805                 op->o_bd = select_backend( be_orig->be_nsuffix, 0, 0 );
1806
1807         if (( SLAP_OPATTRS( rs->sr_attr_flags ) || rs->sr_attrs ) &&
1808                 op->o_bd && op->o_bd->be_operational != NULL )
1809         {
1810                 Attribute       *a;
1811
1812                 a = rs->sr_operational_attrs;
1813                 rs->sr_operational_attrs = NULL;
1814                 rc = op->o_bd->be_operational( op, rs );
1815                 *ap = rs->sr_operational_attrs;
1816                 if ( a != NULL ) {
1817                         rs->sr_operational_attrs = a;
1818                 }
1819
1820                 for ( ; *ap; ap = &(*ap)->a_next )
1821                         /* just count them */ ;
1822         }
1823         op->o_bd = be_orig;
1824
1825         return rc;
1826 }
1827
1828 #ifdef LDAP_SLAPI
1829 static void init_group_pblock( Operation *op, Entry *target,
1830         Entry *e, struct berval *op_ndn, AttributeDescription *group_at )
1831 {
1832         slapi_int_pblock_set_operation( op->o_pb, op );
1833
1834         slapi_pblock_set( op->o_pb,
1835                 SLAPI_X_GROUP_ENTRY, (void *)e );
1836         slapi_pblock_set( op->o_pb,
1837                 SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val );
1838         slapi_pblock_set( op->o_pb,
1839                 SLAPI_X_GROUP_ATTRIBUTE, (void *)group_at->ad_cname.bv_val );
1840         slapi_pblock_set( op->o_pb,
1841                 SLAPI_X_GROUP_TARGET_ENTRY, (void *)target );
1842 }
1843
1844 static int call_group_preop_plugins( Operation *op )
1845 {
1846         int rc;
1847
1848         rc = slapi_int_call_plugins( op->o_bd,
1849                 SLAPI_X_PLUGIN_PRE_GROUP_FN, op->o_pb );
1850         if ( rc < 0 ) {
1851                 if (( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
1852                         (void *)&rc ) != 0 ) || rc == LDAP_SUCCESS )
1853                 {
1854                         rc = LDAP_NO_SUCH_ATTRIBUTE;
1855                 }
1856         } else {
1857                 rc = LDAP_SUCCESS;
1858         }
1859
1860         return rc;
1861 }
1862
1863 static void call_group_postop_plugins( Operation *op )
1864 {
1865         (void) slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_POST_GROUP_FN, op->o_pb );
1866 }
1867 #endif /* LDAP_SLAPI */
1868