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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2007 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15
  16 #include "portable.h"
  17
  18 #include <stdio.h>
  19
  20 #include <ac/string.h>
  21 #include <ac/socket.h>
  22
  23 #include "slap.h"
  24 #include "lutil.h"
  25
  26 #include "../../libraries/liblber/lber-int.h"
  27
  28 static SLAP_CTRL_PARSE_FN parseAssert;
  29 static SLAP_CTRL_PARSE_FN parseDomainScope;
  30 static SLAP_CTRL_PARSE_FN parseDontUseCopy;
  31 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  32 static SLAP_CTRL_PARSE_FN parseNoOp;
  33 static SLAP_CTRL_PARSE_FN parsePagedResults;
  34 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  35 static SLAP_CTRL_PARSE_FN parsePreRead, parsePostRead;
  36 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  37 static SLAP_CTRL_PARSE_FN parseRelax;
  38 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  39 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
  40 static SLAP_CTRL_PARSE_FN parseSortedResults;
  41 #endif
  42 static SLAP_CTRL_PARSE_FN parseSubentries;
  43 #ifdef SLAP_CONTROL_X_TREE_DELETE
  44 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  45 #endif
  46 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  47 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  48 static SLAP_CTRL_PARSE_FN parseSessionTracking;
  49 #endif
  50
  51 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  52
  53 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  54 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  55
  56 struct slap_control_ids slap_cids;
  57
  58 struct slap_control {
  59         /* Control OID */
  60         char *sc_oid;
  61
  62         /* The controlID for this control */
  63         int sc_cid;
  64
  65         /* Operations supported by control */
  66         slap_mask_t sc_mask;
  67
  68         /* Extended operations supported by control */
  69         char **sc_extendedops;          /* input */
  70         BerVarray sc_extendedopsbv;     /* run-time use */
  71
  72         /* Control parsing callback */
  73         SLAP_CTRL_PARSE_FN *sc_parse;
  74
  75         LDAP_SLIST_ENTRY(slap_control) sc_next;
  76 };
  77
  78 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  79         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  80
  81 /*
  82  * all known request control OIDs should be added to this list
  83  */
  84 /*
  85  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  86  * addresses an undefined control; this allows to safely test for
  87  * well known controls even if they are not registered, e.g. if
  88  * they get moved to modules.  An example is sc_LDAPsync, which
  89  * is implemented in the syncprov overlay and thus, if configured
  90  * as dynamic module, may not be registered.  One side effect is that
  91  * slap_known_controls[0] == NULL, so it should always be used
  92  * starting from 1.
  93  * FIXME: should we define the "undefined control" oid?
  94  */
  95 char *slap_known_controls[SLAP_MAX_CIDS+1];
  96 static int num_known_controls = 1;
  97
  98 static char *proxy_authz_extops[] = {
  99         LDAP_EXOP_MODIFY_PASSWD,
 100         LDAP_EXOP_WHO_AM_I,
 101         LDAP_EXOP_REFRESH,
 102         NULL
 103 };
 104
 105 static char *manageDSAit_extops[] = {
 106         LDAP_EXOP_REFRESH,
 107         NULL
 108 };
 109
 110 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 111 static char *session_tracking_extops[] = {
 112         LDAP_EXOP_MODIFY_PASSWD,
 113         LDAP_EXOP_WHO_AM_I,
 114         LDAP_EXOP_REFRESH,
 115         NULL
 116 };
 117 #endif
 118
 119 static struct slap_control control_defs[] = {
 120         {  LDAP_CONTROL_ASSERT,
 121                 (int)offsetof(struct slap_control_ids, sc_assert),
 122                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME|
 123                         SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH,
 124                 NULL, NULL,
 125                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 126         { LDAP_CONTROL_PRE_READ,
 127                 (int)offsetof(struct slap_control_ids, sc_preRead),
 128                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 129                 NULL, NULL,
 130                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 131         { LDAP_CONTROL_POST_READ,
 132                 (int)offsetof(struct slap_control_ids, sc_postRead),
 133                 SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 134                 NULL, NULL,
 135                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 136         { LDAP_CONTROL_VALUESRETURNFILTER,
 137                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 138                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH,
 139                 NULL, NULL,
 140                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 141         { LDAP_CONTROL_PAGEDRESULTS,
 142                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 143                 SLAP_CTRL_SEARCH,
 144                 NULL, NULL,
 145                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 146 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 147         { LDAP_CONTROL_SORTREQUEST,
 148                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 149                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 150                 NULL, NULL,
 151                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 152 #endif
 153         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 154                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 155                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 156                 NULL, NULL,
 157                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 158         { LDAP_CONTROL_DONTUSECOPY,
 159                 (int)offsetof(struct slap_control_ids, sc_dontUseCopy),
 160                 SLAP_CTRL_GLOBAL|SLAP_CTRL_INTROGATE|SLAP_CTRL_HIDE,
 161                 NULL, NULL,
 162                 parseDontUseCopy, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 163         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 164                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 165                 SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE,
 166                 NULL, NULL,
 167                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 168 #ifdef SLAP_CONTROL_X_TREE_DELETE
 169         { LDAP_CONTROL_X_TREE_DELETE,
 170                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 171                 SLAP_CTRL_DELETE|SLAP_CTRL_HIDE,
 172                 NULL, NULL,
 173                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 174 #endif
 175         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 176                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 177                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 178                 NULL, NULL,
 179                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 180         { LDAP_CONTROL_SUBENTRIES,
 181                 (int)offsetof(struct slap_control_ids, sc_subentries),
 182                 SLAP_CTRL_SEARCH,
 183                 NULL, NULL,
 184                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 185         { LDAP_CONTROL_NOOP,
 186                 (int)offsetof(struct slap_control_ids, sc_noOp),
 187                 SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE,
 188                 NULL, NULL,
 189                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 190         { LDAP_CONTROL_RELAX,
 191                 (int)offsetof(struct slap_control_ids, sc_relax),
 192                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 193                 NULL, NULL,
 194                 parseRelax, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 195 #ifdef LDAP_X_TXN
 196         { LDAP_CONTROL_X_TXN_SPEC,
 197                 (int)offsetof(struct slap_control_ids, sc_txnSpec),
 198                 SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 199                 NULL, NULL,
 200                 txn_spec_ctrl, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 201 #endif
 202         { LDAP_CONTROL_MANAGEDSAIT,
 203                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 204                 SLAP_CTRL_ACCESS,
 205                 manageDSAit_extops, NULL,
 206                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 207         { LDAP_CONTROL_PROXY_AUTHZ,
 208                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 209                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS,
 210                 proxy_authz_extops, NULL,
 211                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 212 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 213         { LDAP_CONTROL_X_SESSION_TRACKING,
 214                 (int)offsetof(struct slap_control_ids, sc_sessionTracking),
 215                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS|SLAP_CTRL_BIND|SLAP_CTRL_HIDE,
 216                 session_tracking_extops, NULL,
 217                 parseSessionTracking, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 218 #endif
 219         { NULL, 0, 0, NULL, 0, NULL, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 220 };
 221
 222 static struct slap_control *
 223 find_ctrl( const char *oid );
 224
 225 /*
 226  * Register a supported control.
 227  *
 228  * This can be called by an OpenLDAP plugin or, indirectly, by a
 229  * SLAPI plugin calling slapi_register_supported_control().
 230  *
 231  * NOTE: if flags == 1 the control is replaced if already registered;
 232  * otherwise registering an already registered control is not allowed.
 233  */
 234 int
 235 register_supported_control2(const char *controloid,
 236         slap_mask_t controlmask,
 237         char **controlexops,
 238         SLAP_CTRL_PARSE_FN *controlparsefn,
 239         unsigned flags,
 240         int *controlcid)
 241 {
 242         struct slap_control *sc = NULL;
 243         int i;
 244         BerVarray extendedopsbv = NULL;
 245
 246         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 247                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 248                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 249                 SLAP_MAX_CIDS, 0, 0 );
 250                 return LDAP_OTHER;
 251         }
 252
 253         if ( controloid == NULL ) {
 254                 return LDAP_PARAM_ERROR;
 255         }
 256
 257         /* check if already registered */
 258         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 259                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 260                         if ( flags == 1 ) {
 261                                 Debug( LDAP_DEBUG_TRACE,
 262                                         "Control %s already registered; replacing.\n",
 263                                         controloid, 0, 0 );
 264                                 /* (find and) replace existing handler */
 265                                 sc = find_ctrl( controloid );
 266                                 assert( sc != NULL );
 267                                 break;
 268                         }
 269
 270                         Debug( LDAP_DEBUG_ANY,
 271                                 "Control %s already registered.\n",
 272                                 controloid, 0, 0 );
 273                         return LDAP_PARAM_ERROR;
 274                 }
 275         }
 276
 277         /* turn compatible extended operations into bervals */
 278         if ( controlexops != NULL ) {
 279                 int i;
 280
 281                 for ( i = 0; controlexops[ i ]; i++ );
 282
 283                 extendedopsbv = ber_memcalloc( i + 1, sizeof( struct berval ) );
 284                 if ( extendedopsbv == NULL ) {
 285                         return LDAP_NO_MEMORY;
 286                 }
 287
 288                 for ( i = 0; controlexops[ i ]; i++ ) {
 289                         ber_str2bv( controlexops[ i ], 0, 1, &extendedopsbv[ i ] );
 290                 }
 291         }
 292
 293         if ( sc == NULL ) {
 294                 sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 295                 if ( sc == NULL ) {
 296                         return LDAP_NO_MEMORY;
 297                 }
 298
 299                 sc->sc_oid = ch_strdup( controloid );
 300                 sc->sc_cid = num_known_controls;
 301
 302                 /* Update slap_known_controls, too. */
 303                 slap_known_controls[num_known_controls - 1] = sc->sc_oid;
 304                 slap_known_controls[num_known_controls++] = NULL;
 305
 306                 LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 307                 LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 308
 309         } else {
 310                 if ( sc->sc_extendedopsbv ) {
 311                         /* FIXME: in principle, we should rather merge
 312                          * existing extops with those supported by the
 313                          * new control handling implementation.
 314                          * In fact, whether a control is compatible with
 315                          * an extop should not be a matter of implementation.
 316                          * We likely also need a means for a newly
 317                          * registered extop to declare that it is
 318                          * comptible with an already registered control.
 319                          */
 320                         ber_bvarray_free( sc->sc_extendedopsbv );
 321                         sc->sc_extendedopsbv = NULL;
 322                         sc->sc_extendedops = NULL;
 323                 }
 324         }
 325
 326         sc->sc_extendedopsbv = extendedopsbv;
 327         sc->sc_mask = controlmask;
 328         sc->sc_parse = controlparsefn;
 329         if ( controlcid ) {
 330                 *controlcid = sc->sc_cid;
 331         }
 332
 333         return LDAP_SUCCESS;
 334 }
 335
 336 /*
 337  * One-time initialization of internal controls.
 338  */
 339 int
 340 slap_controls_init( void )
 341 {
 342         int i, rc;
 343
 344         rc = LDAP_SUCCESS;
 345
 346         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 347                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 348                 rc = register_supported_control( control_defs[i].sc_oid,
 349                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 350                         control_defs[i].sc_parse, cid );
 351                 if ( rc != LDAP_SUCCESS ) break;
 352         }
 353
 354         return rc;
 355 }
 356
 357 /*
 358  * Free memory associated with list of supported controls.
 359  */
 360 void
 361 controls_destroy( void )
 362 {
 363         struct slap_control *sc;
 364
 365         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 366                 sc = LDAP_SLIST_FIRST(&controls_list);
 367                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 368
 369                 ch_free( sc->sc_oid );
 370                 if ( sc->sc_extendedopsbv != NULL ) {
 371                         ber_bvarray_free( sc->sc_extendedopsbv );
 372                 }
 373                 ch_free( sc );
 374         }
 375 }
 376
 377 /*
 378  * Format the supportedControl attribute of the root DSE,
 379  * detailing which controls are supported by the directory
 380  * server.
 381  */
 382 int
 383 controls_root_dse_info( Entry *e )
 384 {
 385         AttributeDescription *ad_supportedControl
 386                 = slap_schema.si_ad_supportedControl;
 387         struct berval vals[2];
 388         struct slap_control *sc;
 389
 390         vals[1].bv_val = NULL;
 391         vals[1].bv_len = 0;
 392
 393         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 394                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 395
 396                 vals[0].bv_val = sc->sc_oid;
 397                 vals[0].bv_len = strlen( sc->sc_oid );
 398
 399                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 400                         return -1;
 401                 }
 402         }
 403
 404         return 0;
 405 }
 406
 407 /*
 408  * Return a list of OIDs and operation masks for supported
 409  * controls. Used by SLAPI.
 410  */
 411 int
 412 get_supported_controls(char ***ctrloidsp,
 413         slap_mask_t **ctrlmasks)
 414 {
 415         int n;
 416         char **oids;
 417         slap_mask_t *masks;
 418         struct slap_control *sc;
 419
 420         n = 0;
 421
 422         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 423                 n++;
 424         }
 425
 426         if ( n == 0 ) {
 427                 *ctrloidsp = NULL;
 428                 *ctrlmasks = NULL;
 429                 return LDAP_SUCCESS;
 430         }
 431
 432         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 433         if ( oids == NULL ) {
 434                 return LDAP_NO_MEMORY;
 435         }
 436         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 437         if  ( masks == NULL ) {
 438                 SLAP_FREE( oids );
 439                 return LDAP_NO_MEMORY;
 440         }
 441
 442         n = 0;
 443
 444         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 445                 oids[n] = ch_strdup( sc->sc_oid );
 446                 masks[n] = sc->sc_mask;
 447                 n++;
 448         }
 449         oids[n] = NULL;
 450         masks[n] = 0;
 451
 452         *ctrloidsp = oids;
 453         *ctrlmasks = masks;
 454
 455         return LDAP_SUCCESS;
 456 }
 457
 458 /*
 459  * Find a control given its OID.
 460  */
 461 static struct slap_control *
 462 find_ctrl( const char *oid )
 463 {
 464         struct slap_control *sc;
 465
 466         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 467                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 468                         return sc;
 469                 }
 470         }
 471
 472         return NULL;
 473 }
 474
 475 int
 476 slap_find_control_id(
 477         const char *oid,
 478         int *cid )
 479 {
 480         struct slap_control *ctrl = find_ctrl( oid );
 481         if ( ctrl ) {
 482                 if ( cid ) *cid = ctrl->sc_cid;
 483                 return LDAP_SUCCESS;
 484         }
 485         return LDAP_CONTROL_NOT_FOUND;
 486 }
 487
 488 int
 489 slap_global_control( Operation *op, const char *oid, int *cid )
 490 {
 491         struct slap_control *ctrl = find_ctrl( oid );
 492
 493         if ( ctrl == NULL ) {
 494                 /* should not be reachable */
 495                 Debug( LDAP_DEBUG_ANY,
 496                         "slap_global_control: unrecognized control: %s\n",
 497                         oid, 0, 0 );
 498                 return LDAP_CONTROL_NOT_FOUND;
 499         }
 500
 501         if ( cid ) *cid = ctrl->sc_cid;
 502
 503         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 504                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 505                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 506         {
 507                 return LDAP_COMPARE_TRUE;
 508         }
 509
 510 #if 0
 511         Debug( LDAP_DEBUG_TRACE,
 512                 "slap_global_control: unavailable control: %s\n",
 513                 oid, 0, 0 );
 514 #endif
 515
 516         return LDAP_COMPARE_FALSE;
 517 }
 518
 519 void slap_free_ctrls(
 520         Operation *op,
 521         LDAPControl **ctrls )
 522 {
 523         int i;
 524
 525         for (i=0; ctrls[i]; i++) {
 526                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 527         }
 528         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 529 }
 530
 531 int slap_parse_ctrl(
 532         Operation *op,
 533         SlapReply *rs,
 534         LDAPControl *control,
 535         const char **text )
 536 {
 537         struct slap_control *sc;
 538
 539         sc = find_ctrl( control->ldctl_oid );
 540         if( sc != NULL ) {
 541                 /* recognized control */
 542                 slap_mask_t tagmask;
 543                 switch( op->o_tag ) {
 544                 case LDAP_REQ_ADD:
 545                         tagmask = SLAP_CTRL_ADD;
 546                         break;
 547                 case LDAP_REQ_BIND:
 548                         tagmask = SLAP_CTRL_BIND;
 549                         break;
 550                 case LDAP_REQ_COMPARE:
 551                         tagmask = SLAP_CTRL_COMPARE;
 552                         break;
 553                 case LDAP_REQ_DELETE:
 554                         tagmask = SLAP_CTRL_DELETE;
 555                         break;
 556                 case LDAP_REQ_MODIFY:
 557                         tagmask = SLAP_CTRL_MODIFY;
 558                         break;
 559                 case LDAP_REQ_RENAME:
 560                         tagmask = SLAP_CTRL_RENAME;
 561                         break;
 562                 case LDAP_REQ_SEARCH:
 563                         tagmask = SLAP_CTRL_SEARCH;
 564                         break;
 565                 case LDAP_REQ_UNBIND:
 566                         tagmask = SLAP_CTRL_UNBIND;
 567                         break;
 568                 case LDAP_REQ_ABANDON:
 569                         tagmask = SLAP_CTRL_ABANDON;
 570                         break;
 571                 case LDAP_REQ_EXTENDED:
 572                         tagmask=~0L;
 573                         assert( op->ore_reqoid.bv_val != NULL );
 574                         if( sc->sc_extendedopsbv != NULL ) {
 575                                 int i;
 576                                 for( i=0; !BER_BVISNULL( &sc->sc_extendedopsbv[i] ); i++ ) {
 577                                         if( bvmatch( &op->ore_reqoid,
 578                                                 &sc->sc_extendedopsbv[i] ) )
 579                                         {
 580                                                 tagmask=0L;
 581                                                 break;
 582                                         }
 583                                 }
 584                         }
 585                         break;
 586                 default:
 587                         *text = "controls internal error";
 588                         return LDAP_OTHER;
 589                 }
 590
 591                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 592                         /* available extension */
 593                         int     rc;
 594
 595                         if( !sc->sc_parse ) {
 596                                 *text = "not yet implemented";
 597                                 return LDAP_OTHER;
 598                         }
 599
 600                         rc = sc->sc_parse( op, rs, control );
 601                         if ( rc ) {
 602                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 603                                 return rc;
 604                         }
 605
 606                 } else if( control->ldctl_iscritical ) {
 607                         /* unavailable CRITICAL control */
 608                         *text = "critical extension is unavailable";
 609                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 610                 }
 611         } else if( control->ldctl_iscritical ) {
 612                 /* unrecognized CRITICAL control */
 613                 *text = "critical extension is not recognized";
 614                 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 615         }
 616
 617         return LDAP_SUCCESS;
 618 }
 619
 620 int get_ctrls(
 621         Operation *op,
 622         SlapReply *rs,
 623         int sendres )
 624 {
 625         int nctrls = 0;
 626         ber_tag_t tag;
 627         ber_len_t len;
 628         char *opaque;
 629         BerElement *ber = op->o_ber;
 630         struct berval bv;
 631
 632         len = ber_pvt_ber_remaining(ber);
 633
 634         if( len == 0) {
 635                 /* no controls */
 636                 rs->sr_err = LDAP_SUCCESS;
 637                 return rs->sr_err;
 638         }
 639
 640         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 641                 if( tag == LBER_ERROR ) {
 642                         rs->sr_err = SLAPD_DISCONNECT;
 643                         rs->sr_text = "unexpected data in PDU";
 644                 }
 645
 646                 goto return_results;
 647         }
 648
 649         Debug( LDAP_DEBUG_TRACE,
 650                 "=> get_ctrls\n", 0, 0, 0 );
 651
 652         if( op->o_protocol < LDAP_VERSION3 ) {
 653                 rs->sr_err = SLAPD_DISCONNECT;
 654                 rs->sr_text = "controls require LDAPv3";
 655                 goto return_results;
 656         }
 657
 658         /* one for first control, one for termination */
 659         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 660
 661 #if 0
 662         if( op->ctrls == NULL ) {
 663                 rs->sr_err = LDAP_NO_MEMORY;
 664                 rs->sr_text = "no memory";
 665                 goto return_results;
 666         }
 667 #endif
 668
 669         op->o_ctrls[nctrls] = NULL;
 670
 671         /* step through each element */
 672         for( tag = ber_first_element( ber, &len, &opaque );
 673                 tag != LBER_ERROR;
 674                 tag = ber_next_element( ber, &len, opaque ) )
 675         {
 676                 LDAPControl *c;
 677                 LDAPControl **tctrls;
 678
 679                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 680                 memset(c, 0, sizeof(LDAPControl));
 681
 682                 /* allocate pointer space for current controls (nctrls)
 683                  * + this control + extra NULL
 684                  */
 685                 tctrls = op->o_tmprealloc( op->o_ctrls,
 686                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 687
 688 #if 0
 689                 if( tctrls == NULL ) {
 690                         ch_free( c );
 691                         ldap_controls_free(op->o_ctrls);
 692                         op->o_ctrls = NULL;
 693
 694                         rs->sr_err = LDAP_NO_MEMORY;
 695                         rs->sr_text = "no memory";
 696                         goto return_results;
 697                 }
 698 #endif
 699                 op->o_ctrls = tctrls;
 700
 701                 op->o_ctrls[nctrls++] = c;
 702                 op->o_ctrls[nctrls] = NULL;
 703
 704                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 705                 c->ldctl_oid = bv.bv_val;
 706
 707                 if( tag == LBER_ERROR ) {
 708                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 709                                 0, 0, 0 );
 710
 711                         slap_free_ctrls( op, op->o_ctrls );
 712                         op->o_ctrls = NULL;
 713                         rs->sr_err = SLAPD_DISCONNECT;
 714                         rs->sr_text = "decoding controls error";
 715                         goto return_results;
 716
 717                 } else if( c->ldctl_oid == NULL ) {
 718                         Debug( LDAP_DEBUG_TRACE,
 719                                 "get_ctrls: conn %lu got emtpy OID.\n",
 720                                 op->o_connid, 0, 0 );
 721
 722                         slap_free_ctrls( op, op->o_ctrls );
 723                         op->o_ctrls = NULL;
 724                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 725                         rs->sr_text = "OID field is empty";
 726                         goto return_results;
 727                 }
 728
 729                 tag = ber_peek_tag( ber, &len );
 730
 731                 if( tag == LBER_BOOLEAN ) {
 732                         ber_int_t crit;
 733                         tag = ber_scanf( ber, "b", &crit );
 734
 735                         if( tag == LBER_ERROR ) {
 736                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 737                                         0, 0, 0 );
 738                                 slap_free_ctrls( op, op->o_ctrls );
 739                                 op->o_ctrls = NULL;
 740                                 rs->sr_err = SLAPD_DISCONNECT;
 741                                 rs->sr_text = "decoding controls error";
 742                                 goto return_results;
 743                         }
 744
 745                         c->ldctl_iscritical = (crit != 0);
 746                         tag = ber_peek_tag( ber, &len );
 747                 }
 748
 749                 if( tag == LBER_OCTETSTRING ) {
 750                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 751
 752                         if( tag == LBER_ERROR ) {
 753                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 754                                         "%s (%scritical): get value failed.\n",
 755                                         op->o_connid, c->ldctl_oid,
 756                                         c->ldctl_iscritical ? "" : "non" );
 757                                 slap_free_ctrls( op, op->o_ctrls );
 758                                 op->o_ctrls = NULL;
 759                                 rs->sr_err = SLAPD_DISCONNECT;
 760                                 rs->sr_text = "decoding controls error";
 761                                 goto return_results;
 762                         }
 763                 }
 764
 765                 Debug( LDAP_DEBUG_TRACE,
 766                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 767                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 768
 769                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 770                 if ( rs->sr_err != LDAP_SUCCESS ) {
 771                         goto return_results;
 772                 }
 773         }
 774
 775 return_results:
 776         Debug( LDAP_DEBUG_TRACE,
 777                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 778                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 779
 780         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 781                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 782                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 783                         send_ldap_disconnect( op, rs );
 784                         rs->sr_err = SLAPD_DISCONNECT;
 785                 } else {
 786                         send_ldap_result( op, rs );
 787                 }
 788         }
 789
 790         return rs->sr_err;
 791 }
 792
 793 int
 794 slap_remove_control(
 795         Operation       *op,
 796         SlapReply       *rs,
 797         int             ctrl,
 798         BI_chk_controls fnc )
 799 {
 800         int             i, j;
 801
 802         switch ( op->o_ctrlflag[ ctrl ] ) {
 803         case SLAP_CONTROL_NONCRITICAL:
 804                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 805                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 806                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 807                         {
 808                                 j = i;
 809                         }
 810                 }
 811
 812                 if ( j == -1 ) {
 813                         rs->sr_err = LDAP_OTHER;
 814                         break;
 815                 }
 816
 817                 if ( fnc ) {
 818                         (void)fnc( op, rs );
 819                 }
 820
 821                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 822
 823                 if ( i > 1 ) {
 824                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 825                                 ( i - j ) * sizeof( LDAPControl * ) );
 826
 827                 } else {
 828                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
 829                         op->o_ctrls = NULL;
 830                 }
 831
 832                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
 833
 834                 Debug( LDAP_DEBUG_ANY, "%s: "
 835                         "non-critical control \"%s\" not supported; stripped.\n",
 836                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 837                 /* fall thru */
 838
 839         case SLAP_CONTROL_IGNORED:
 840         case SLAP_CONTROL_NONE:
 841                 rs->sr_err = SLAP_CB_CONTINUE;
 842                 break;
 843
 844         case SLAP_CONTROL_CRITICAL:
 845                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 846                 if ( fnc ) {
 847                         (void)fnc( op, rs );
 848                 }
 849                 Debug( LDAP_DEBUG_ANY, "%s: "
 850                         "critical control \"%s\" not supported.\n",
 851                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 852                 break;
 853
 854         default:
 855                 /* handle all cases! */
 856                 assert( 0 );
 857         }
 858
 859         return rs->sr_err;
 860 }
 861
 862 static int parseDontUseCopy (
 863         Operation *op,
 864         SlapReply *rs,
 865         LDAPControl *ctrl )
 866 {
 867         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
 868                 rs->sr_text = "dontUseCopy control specified multiple times";
 869                 return LDAP_PROTOCOL_ERROR;
 870         }
 871
 872         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 873                 rs->sr_text = "dontUseCopy control value not absent";
 874                 return LDAP_PROTOCOL_ERROR;
 875         }
 876
 877         if ( !ctrl->ldctl_iscritical ) {
 878                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
 879                 return LDAP_PROTOCOL_ERROR;
 880         }
 881
 882         op->o_dontUseCopy = SLAP_CONTROL_CRITICAL;
 883         return LDAP_SUCCESS;
 884 }
 885
 886 static int parseRelax (
 887         Operation *op,
 888         SlapReply *rs,
 889         LDAPControl *ctrl )
 890 {
 891         if ( op->o_relax != SLAP_CONTROL_NONE ) {
 892                 rs->sr_text = "relax control specified multiple times";
 893                 return LDAP_PROTOCOL_ERROR;
 894         }
 895
 896         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 897                 rs->sr_text = "relax control value not absent";
 898                 return LDAP_PROTOCOL_ERROR;
 899         }
 900
 901         op->o_relax = ctrl->ldctl_iscritical
 902                 ? SLAP_CONTROL_CRITICAL
 903                 : SLAP_CONTROL_NONCRITICAL;
 904
 905         return LDAP_SUCCESS;
 906 }
 907
 908 static int parseManageDSAit (
 909         Operation *op,
 910         SlapReply *rs,
 911         LDAPControl *ctrl )
 912 {
 913         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 914                 rs->sr_text = "manageDSAit control specified multiple times";
 915                 return LDAP_PROTOCOL_ERROR;
 916         }
 917
 918         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 919                 rs->sr_text = "manageDSAit control value not absent";
 920                 return LDAP_PROTOCOL_ERROR;
 921         }
 922
 923         op->o_managedsait = ctrl->ldctl_iscritical
 924                 ? SLAP_CONTROL_CRITICAL
 925                 : SLAP_CONTROL_NONCRITICAL;
 926
 927         return LDAP_SUCCESS;
 928 }
 929
 930 static int parseProxyAuthz (
 931         Operation *op,
 932         SlapReply *rs,
 933         LDAPControl *ctrl )
 934 {
 935         int             rc;
 936         struct berval   dn = BER_BVNULL;
 937
 938         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 939                 rs->sr_text = "proxy authorization control specified multiple times";
 940                 return LDAP_PROTOCOL_ERROR;
 941         }
 942
 943         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
 944                 rs->sr_text = "proxy authorization control value absent";
 945                 return LDAP_PROTOCOL_ERROR;
 946         }
 947
 948         if ( !( global_allows & SLAP_ALLOW_PROXY_AUTHZ_ANON )
 949                 && BER_BVISEMPTY( &op->o_ndn ) )
 950         {
 951                 rs->sr_text = "anonymous proxied authorization not allowed";
 952                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 953         }
 954
 955         op->o_proxy_authz = ctrl->ldctl_iscritical
 956                 ? SLAP_CONTROL_CRITICAL
 957                 : SLAP_CONTROL_NONCRITICAL;
 958
 959         Debug( LDAP_DEBUG_ARGS,
 960                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 961                 op->o_connid,
 962                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 963                 0 );
 964
 965         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
 966                 Debug( LDAP_DEBUG_TRACE,
 967                         "parseProxyAuthz: conn=%lu anonymous\n",
 968                         op->o_connid, 0, 0 );
 969
 970                 /* anonymous */
 971                 if ( !BER_BVISNULL( &op->o_ndn ) ) {
 972                         op->o_ndn.bv_val[ 0 ] = '\0';
 973                 }
 974                 op->o_ndn.bv_len = 0;
 975
 976                 if ( !BER_BVISNULL( &op->o_dn ) ) {
 977                         op->o_dn.bv_val[ 0 ] = '\0';
 978                 }
 979                 op->o_dn.bv_len = 0;
 980
 981                 return LDAP_SUCCESS;
 982         }
 983
 984         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 985                         NULL, &dn, SLAP_GETDN_AUTHZID );
 986
 987         /* FIXME: empty DN in proxyAuthz control should be legal... */
 988         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 989                 if ( dn.bv_val ) {
 990                         ch_free( dn.bv_val );
 991                 }
 992                 rs->sr_text = "authzId mapping failed";
 993                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 994         }
 995
 996         Debug( LDAP_DEBUG_TRACE,
 997                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 998                 op->o_connid,
 999                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
1000
1001         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
1002
1003         if ( rc ) {
1004                 ch_free( dn.bv_val );
1005                 rs->sr_text = "not authorized to assume identity";
1006                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1007         }
1008
1009         ch_free( op->o_ndn.bv_val );
1010         ch_free( op->o_dn.bv_val );
1011
1012         /*
1013          * NOTE: since slap_sasl_getdn() returns a normalized dn,
1014          * from now on op->o_dn is normalized
1015          */
1016         op->o_ndn = dn;
1017         ber_dupbv( &op->o_dn, &dn );
1018
1019         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
1020             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
1021
1022         return LDAP_SUCCESS;
1023 }
1024
1025 static int parseNoOp (
1026         Operation *op,
1027         SlapReply *rs,
1028         LDAPControl *ctrl )
1029 {
1030         if ( op->o_noop != SLAP_CONTROL_NONE ) {
1031                 rs->sr_text = "noop control specified multiple times";
1032                 return LDAP_PROTOCOL_ERROR;
1033         }
1034
1035         if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
1036                 rs->sr_text = "noop control value not empty";
1037                 return LDAP_PROTOCOL_ERROR;
1038         }
1039
1040         op->o_noop = ctrl->ldctl_iscritical
1041                 ? SLAP_CONTROL_CRITICAL
1042                 : SLAP_CONTROL_NONCRITICAL;
1043
1044         return LDAP_SUCCESS;
1045 }
1046
1047 static int parsePagedResults (
1048         Operation *op,
1049         SlapReply *rs,
1050         LDAPControl *ctrl )
1051 {
1052         int             rc = LDAP_SUCCESS;
1053         ber_tag_t       tag;
1054         ber_int_t       size;
1055         BerElement      *ber;
1056         struct berval   cookie = BER_BVNULL;
1057         PagedResultsState       *ps;
1058
1059         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1060                 rs->sr_text = "paged results control specified multiple times";
1061                 return LDAP_PROTOCOL_ERROR;
1062         }
1063
1064         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1065                 rs->sr_text = "paged results control value is absent";
1066                 return LDAP_PROTOCOL_ERROR;
1067         }
1068
1069         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1070                 rs->sr_text = "paged results control value is empty";
1071                 return LDAP_PROTOCOL_ERROR;
1072         }
1073
1074         /* Parse the control value
1075          *      realSearchControlValue ::= SEQUENCE {
1076          *              size    INTEGER (0..maxInt),
1077          *                              -- requested page size from client
1078          *                              -- result set size estimate from server
1079          *              cookie  OCTET STRING
1080          * }
1081          */
1082         ber = ber_init( &ctrl->ldctl_value );
1083         if ( ber == NULL ) {
1084                 rs->sr_text = "internal error";
1085                 return LDAP_OTHER;
1086         }
1087
1088         tag = ber_scanf( ber, "{im}", &size, &cookie );
1089
1090         if ( tag == LBER_ERROR ) {
1091                 rs->sr_text = "paged results control could not be decoded";
1092                 rc = LDAP_PROTOCOL_ERROR;
1093                 goto done;
1094         }
1095
1096         if ( size < 0 ) {
1097                 rs->sr_text = "paged results control size invalid";
1098                 rc = LDAP_PROTOCOL_ERROR;
1099                 goto done;
1100         }
1101
1102         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
1103         *ps = op->o_conn->c_pagedresults_state;
1104         ps->ps_size = size;
1105         op->o_pagedresults_state = ps;
1106
1107         /* NOTE: according to RFC 2696 3.:
1108
1109     If the page size is greater than or equal to the sizeLimit value, the
1110     server should ignore the control as the request can be satisfied in a
1111     single page.
1112
1113          * NOTE: this assumes that the op->ors_slimit be set
1114          * before the controls are parsed.
1115          */
1116
1117         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1118                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1119
1120         } else if ( ctrl->ldctl_iscritical ) {
1121                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1122
1123         } else {
1124                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1125         }
1126
1127 done:;
1128         (void)ber_free( ber, 1 );
1129         return rc;
1130 }
1131
1132 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
1133 static int parseSortedResults (
1134         Operation *op,
1135         SlapReply *rs,
1136         LDAPControl *ctrl )
1137 {
1138         int             rc = LDAP_SUCCESS;
1139
1140         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1141                 rs->sr_text = "sorted results control specified multiple times";
1142                 return LDAP_PROTOCOL_ERROR;
1143         }
1144
1145         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1146                 rs->sr_text = "sorted results control value is absent";
1147                 return LDAP_PROTOCOL_ERROR;
1148         }
1149
1150         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1151                 rs->sr_text = "sorted results control value is empty";
1152                 return LDAP_PROTOCOL_ERROR;
1153         }
1154
1155         /* blow off parsing the value */
1156
1157         op->o_sortedresults = ctrl->ldctl_iscritical
1158                 ? SLAP_CONTROL_CRITICAL
1159                 : SLAP_CONTROL_NONCRITICAL;
1160
1161         return rc;
1162 }
1163 #endif
1164
1165 static int parseAssert (
1166         Operation *op,
1167         SlapReply *rs,
1168         LDAPControl *ctrl )
1169 {
1170         BerElement      *ber;
1171         struct berval   fstr = BER_BVNULL;
1172
1173         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1174                 rs->sr_text = "assert control specified multiple times";
1175                 return LDAP_PROTOCOL_ERROR;
1176         }
1177
1178         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1179                 rs->sr_text = "assert control value is absent";
1180                 return LDAP_PROTOCOL_ERROR;
1181         }
1182
1183         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1184                 rs->sr_text = "assert control value is empty";
1185                 return LDAP_PROTOCOL_ERROR;
1186         }
1187
1188         ber = ber_init( &(ctrl->ldctl_value) );
1189         if (ber == NULL) {
1190                 rs->sr_text = "assert control: internal error";
1191                 return LDAP_OTHER;
1192         }
1193
1194         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1195                 &rs->sr_text);
1196         (void) ber_free( ber, 1 );
1197         if( rs->sr_err != LDAP_SUCCESS ) {
1198                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1199                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1200                         send_ldap_disconnect( op, rs );
1201                         rs->sr_err = SLAPD_DISCONNECT;
1202                 } else {
1203                         send_ldap_result( op, rs );
1204                 }
1205                 if( op->o_assertion != NULL ) {
1206                         filter_free_x( op, op->o_assertion );
1207                 }
1208                 return rs->sr_err;
1209         }
1210
1211 #ifdef LDAP_DEBUG
1212         filter2bv_x( op, op->o_assertion, &fstr );
1213
1214         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1215                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1216         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1217 #endif
1218
1219         op->o_assert = ctrl->ldctl_iscritical
1220                 ? SLAP_CONTROL_CRITICAL
1221                 : SLAP_CONTROL_NONCRITICAL;
1222
1223         rs->sr_err = LDAP_SUCCESS;
1224         return LDAP_SUCCESS;
1225 }
1226
1227 static int parsePreRead (
1228         Operation *op,
1229         SlapReply *rs,
1230         LDAPControl *ctrl )
1231 {
1232         ber_len_t siz, off, i;
1233         AttributeName *an = NULL;
1234         BerElement      *ber;
1235
1236         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1237                 rs->sr_text = "preread control specified multiple times";
1238                 return LDAP_PROTOCOL_ERROR;
1239         }
1240
1241         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1242                 rs->sr_text = "preread control value is absent";
1243                 return LDAP_PROTOCOL_ERROR;
1244         }
1245
1246         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1247                 rs->sr_text = "preread control value is empty";
1248                 return LDAP_PROTOCOL_ERROR;
1249         }
1250
1251 #ifdef LDAP_X_TXN
1252         if ( op->o_txnSpec ) { /* temporary limitation */
1253                 rs->sr_text = "cannot perform pre-read in transaction";
1254                 return LDAP_UNWILLING_TO_PERFORM;
1255         }
1256 #endif
1257
1258         ber = ber_init( &(ctrl->ldctl_value) );
1259         if (ber == NULL) {
1260                 rs->sr_text = "preread control: internal error";
1261                 return LDAP_OTHER;
1262         }
1263
1264         rs->sr_err = LDAP_SUCCESS;
1265
1266         siz = sizeof( AttributeName );
1267         off = offsetof( AttributeName, an_name );
1268         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1269                 rs->sr_text = "preread control: decoding error";
1270                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1271                 goto done;
1272         }
1273
1274         for( i=0; i<siz; i++ ) {
1275                 const char      *dummy = NULL;
1276
1277                 an[i].an_desc = NULL;
1278                 an[i].an_oc = NULL;
1279                 an[i].an_oc_exclude = 0;
1280                 rs->sr_err = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1281                 if ( rs->sr_err != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1282                         rs->sr_text = dummy
1283                                 ? dummy
1284                                 : "postread control: unknown attributeType";
1285                         goto done;
1286                 }
1287         }
1288
1289         op->o_preread = ctrl->ldctl_iscritical
1290                 ? SLAP_CONTROL_CRITICAL
1291                 : SLAP_CONTROL_NONCRITICAL;
1292
1293         op->o_preread_attrs = an;
1294
1295 done:
1296         (void) ber_free( ber, 1 );
1297         return rs->sr_err;
1298 }
1299
1300 static int parsePostRead (
1301         Operation *op,
1302         SlapReply *rs,
1303         LDAPControl *ctrl )
1304 {
1305         ber_len_t siz, off, i;
1306         AttributeName *an = NULL;
1307         BerElement      *ber;
1308
1309         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1310                 rs->sr_text = "postread control specified multiple times";
1311                 return LDAP_PROTOCOL_ERROR;
1312         }
1313
1314         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1315                 rs->sr_text = "postread control value is absent";
1316                 return LDAP_PROTOCOL_ERROR;
1317         }
1318
1319         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1320                 rs->sr_text = "postread control value is empty";
1321                 return LDAP_PROTOCOL_ERROR;
1322         }
1323
1324 #ifdef LDAP_X_TXN
1325         if ( op->o_txnSpec ) { /* temporary limitation */
1326                 rs->sr_text = "cannot perform post-read in transaction";
1327                 return LDAP_UNWILLING_TO_PERFORM;
1328         }
1329 #endif
1330
1331         ber = ber_init( &(ctrl->ldctl_value) );
1332         if (ber == NULL) {
1333                 rs->sr_text = "postread control: internal error";
1334                 return LDAP_OTHER;
1335         }
1336
1337         rs->sr_err = LDAP_SUCCESS;
1338         siz = sizeof( AttributeName );
1339         off = offsetof( AttributeName, an_name );
1340         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1341                 rs->sr_text = "postread control: decoding error";
1342                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1343                 goto done;
1344         }
1345
1346         for ( i = 0; i < siz; i++ ) {
1347                 const char      *dummy = NULL;
1348                 int             rc;
1349
1350                 an[i].an_desc = NULL;
1351                 an[i].an_oc = NULL;
1352                 an[i].an_oc_exclude = 0;
1353                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1354                 if ( rc != LDAP_SUCCESS ) {
1355                         int                     i;
1356                         static struct berval    special_attrs[] = {
1357                                 BER_BVC( LDAP_NO_ATTRS ),
1358                                 BER_BVC( LDAP_ALL_USER_ATTRIBUTES ),
1359                                 BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ),
1360                                 BER_BVNULL
1361                         };
1362
1363                         /* deal with special attribute types */
1364                         for ( i = 0; !BER_BVISNULL( &special_attrs[ i ] ); i++ ) {
1365                                 if ( bvmatch( &an[i].an_name, &special_attrs[ i ] ) ) {
1366                                         break;
1367                                 }
1368                         }
1369
1370                         if ( BER_BVISNULL( &special_attrs[ i ] ) && ctrl->ldctl_iscritical ) {
1371                                 rs->sr_err = rc;
1372                                 rs->sr_text = dummy
1373                                         ? dummy
1374                                         : "postread control: unknown attributeType";
1375                                 goto done;
1376                         }
1377                 }
1378         }
1379
1380         op->o_postread = ctrl->ldctl_iscritical
1381                 ? SLAP_CONTROL_CRITICAL
1382                 : SLAP_CONTROL_NONCRITICAL;
1383
1384         op->o_postread_attrs = an;
1385
1386 done:
1387         (void) ber_free( ber, 1 );
1388         return rs->sr_err;
1389 }
1390
1391 static int parseValuesReturnFilter (
1392         Operation *op,
1393         SlapReply *rs,
1394         LDAPControl *ctrl )
1395 {
1396         BerElement      *ber;
1397         struct berval   fstr = BER_BVNULL;
1398
1399         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1400                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1401                 return LDAP_PROTOCOL_ERROR;
1402         }
1403
1404         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1405                 rs->sr_text = "valuesReturnFilter control value is absent";
1406                 return LDAP_PROTOCOL_ERROR;
1407         }
1408
1409         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1410                 rs->sr_text = "valuesReturnFilter control value is empty";
1411                 return LDAP_PROTOCOL_ERROR;
1412         }
1413
1414         ber = ber_init( &(ctrl->ldctl_value) );
1415         if (ber == NULL) {
1416                 rs->sr_text = "internal error";
1417                 return LDAP_OTHER;
1418         }
1419
1420         rs->sr_err = get_vrFilter( op, ber,
1421                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1422
1423         (void) ber_free( ber, 1 );
1424
1425         if( rs->sr_err != LDAP_SUCCESS ) {
1426                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1427                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1428                         send_ldap_disconnect( op, rs );
1429                         rs->sr_err = SLAPD_DISCONNECT;
1430                 } else {
1431                         send_ldap_result( op, rs );
1432                 }
1433                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1434         }
1435 #ifdef LDAP_DEBUG
1436         else {
1437                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1438         }
1439
1440         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1441                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1442         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1443 #endif
1444
1445         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1446                 ? SLAP_CONTROL_CRITICAL
1447                 : SLAP_CONTROL_NONCRITICAL;
1448
1449         rs->sr_err = LDAP_SUCCESS;
1450         return LDAP_SUCCESS;
1451 }
1452
1453 static int parseSubentries (
1454         Operation *op,
1455         SlapReply *rs,
1456         LDAPControl *ctrl )
1457 {
1458         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1459                 rs->sr_text = "subentries control specified multiple times";
1460                 return LDAP_PROTOCOL_ERROR;
1461         }
1462
1463         /* FIXME: should use BER library */
1464         if( ( ctrl->ldctl_value.bv_len != 3 )
1465                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1466                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1467         {
1468                 rs->sr_text = "subentries control value encoding is bogus";
1469                 return LDAP_PROTOCOL_ERROR;
1470         }
1471
1472         op->o_subentries = ctrl->ldctl_iscritical
1473                 ? SLAP_CONTROL_CRITICAL
1474                 : SLAP_CONTROL_NONCRITICAL;
1475
1476         if (ctrl->ldctl_value.bv_val[2]) {
1477                 set_subentries_visibility( op );
1478         }
1479
1480         return LDAP_SUCCESS;
1481 }
1482
1483 static int parsePermissiveModify (
1484         Operation *op,
1485         SlapReply *rs,
1486         LDAPControl *ctrl )
1487 {
1488         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1489                 rs->sr_text = "permissiveModify control specified multiple times";
1490                 return LDAP_PROTOCOL_ERROR;
1491         }
1492
1493         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1494                 rs->sr_text = "permissiveModify control value not absent";
1495                 return LDAP_PROTOCOL_ERROR;
1496         }
1497
1498         op->o_permissive_modify = ctrl->ldctl_iscritical
1499                 ? SLAP_CONTROL_CRITICAL
1500                 : SLAP_CONTROL_NONCRITICAL;
1501
1502         return LDAP_SUCCESS;
1503 }
1504
1505 static int parseDomainScope (
1506         Operation *op,
1507         SlapReply *rs,
1508         LDAPControl *ctrl )
1509 {
1510         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1511                 rs->sr_text = "domainScope control specified multiple times";
1512                 return LDAP_PROTOCOL_ERROR;
1513         }
1514
1515         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1516                 rs->sr_text = "domainScope control value not empty";
1517                 return LDAP_PROTOCOL_ERROR;
1518         }
1519
1520         op->o_domain_scope = ctrl->ldctl_iscritical
1521                 ? SLAP_CONTROL_CRITICAL
1522                 : SLAP_CONTROL_NONCRITICAL;
1523
1524         return LDAP_SUCCESS;
1525 }
1526
1527 #ifdef SLAP_CONTROL_X_TREE_DELETE
1528 static int parseTreeDelete (
1529         Operation *op,
1530         SlapReply *rs,
1531         LDAPControl *ctrl )
1532 {
1533         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1534                 rs->sr_text = "treeDelete control specified multiple times";
1535                 return LDAP_PROTOCOL_ERROR;
1536         }
1537
1538         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1539                 rs->sr_text = "treeDelete control value not absent";
1540                 return LDAP_PROTOCOL_ERROR;
1541         }
1542
1543         op->o_tree_delete = ctrl->ldctl_iscritical
1544                 ? SLAP_CONTROL_CRITICAL
1545                 : SLAP_CONTROL_NONCRITICAL;
1546
1547         return LDAP_SUCCESS;
1548 }
1549 #endif
1550
1551 static int parseSearchOptions (
1552         Operation *op,
1553         SlapReply *rs,
1554         LDAPControl *ctrl )
1555 {
1556         BerElement *ber;
1557         ber_int_t search_flags;
1558         ber_tag_t tag;
1559
1560         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1561                 rs->sr_text = "searchOptions control value is absent";
1562                 return LDAP_PROTOCOL_ERROR;
1563         }
1564
1565         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1566                 rs->sr_text = "searchOptions control value is empty";
1567                 return LDAP_PROTOCOL_ERROR;
1568         }
1569
1570         ber = ber_init( &ctrl->ldctl_value );
1571         if( ber == NULL ) {
1572                 rs->sr_text = "internal error";
1573                 return LDAP_OTHER;
1574         }
1575
1576         tag = ber_scanf( ber, "{i}", &search_flags );
1577         (void) ber_free( ber, 1 );
1578
1579         if ( tag == LBER_ERROR ) {
1580                 rs->sr_text = "searchOptions control decoding error";
1581                 return LDAP_PROTOCOL_ERROR;
1582         }
1583
1584         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1585                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1586                         rs->sr_text = "searchOptions control specified multiple times "
1587                                 "or with domainScope control";
1588                         return LDAP_PROTOCOL_ERROR;
1589                 }
1590
1591                 op->o_domain_scope = ctrl->ldctl_iscritical
1592                         ? SLAP_CONTROL_CRITICAL
1593                         : SLAP_CONTROL_NONCRITICAL;
1594         }
1595
1596         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1597                 /* Other search flags not recognised so far,
1598                  * including:
1599                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1600                  */
1601                 rs->sr_text = "searchOptions contained unrecognized flag";
1602                 return LDAP_UNWILLING_TO_PERFORM;
1603         }
1604
1605         return LDAP_SUCCESS;
1606 }
1607
1608 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
1609 struct berval session_tracking_formats[] = {
1610         BER_BVC( "LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_SESSION_ID" ),
1611                 BER_BVC( "RADIUS-Acct-Session-Id" ),
1612         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_MULTI_SESSION_ID ),
1613                 BER_BVC( "RADIUS-Acct-Multi-Session-Id" ),
1614         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME ),
1615                 BER_BVC( "USERNAME" ),
1616
1617         BER_BVNULL
1618 };
1619
1620 static int parseSessionTracking(
1621         Operation *op,
1622         SlapReply *rs,
1623         LDAPControl *ctrl )
1624 {
1625         BerElement              *ber;
1626         ber_tag_t               tag;
1627         ber_len_t               len;
1628         int                     i, rc;
1629
1630         struct berval           sessionSourceIp = BER_BVNULL,
1631                                 sessionSourceName = BER_BVNULL,
1632                                 formatOID = BER_BVNULL,
1633                                 sessionTrackingIdentifier = BER_BVNULL;
1634
1635         size_t                  st_len, st_pos;
1636
1637         if ( ctrl->ldctl_iscritical ) {
1638                 rs->sr_text = "sessionTracking criticality is TRUE";
1639                 return LDAP_PROTOCOL_ERROR;
1640         }
1641
1642         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1643                 rs->sr_text = "sessionTracking control value is absent";
1644                 return LDAP_PROTOCOL_ERROR;
1645         }
1646
1647         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1648                 rs->sr_text = "sessionTracking control value is empty";
1649                 return LDAP_PROTOCOL_ERROR;
1650         }
1651
1652         ber = ber_init( &ctrl->ldctl_value );
1653         if ( ber == NULL ) {
1654                 rs->sr_text = "internal error";
1655                 return LDAP_OTHER;
1656         }
1657
1658         tag = ber_skip_tag( ber, &len );
1659         if ( tag != LBER_SEQUENCE ) {
1660                 tag = LBER_ERROR;
1661                 goto error;
1662         }
1663
1664         /* sessionSourceIp */
1665         tag = ber_peek_tag( ber, &len );
1666         if ( tag == LBER_DEFAULT ) {
1667                 tag = LBER_ERROR;
1668                 goto error;
1669         }
1670
1671         if ( len == 0 ) {
1672                 tag = ber_skip_tag( ber, &len );
1673
1674         } else if ( len > 128 ) {
1675                 rs->sr_text = "sessionTracking.sessionSourceIp too long";
1676                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1677                 goto error;
1678
1679         } else {
1680                 tag = ber_scanf( ber, "m", &sessionSourceIp );
1681         }
1682
1683         if ( ldif_is_not_printable( sessionSourceIp.bv_val, sessionSourceIp.bv_len ) ) {
1684                 BER_BVZERO( &sessionSourceIp );
1685         }
1686
1687         /* sessionSourceName */
1688         tag = ber_peek_tag( ber, &len );
1689         if ( tag == LBER_DEFAULT ) {
1690                 tag = LBER_ERROR;
1691                 goto error;
1692         }
1693
1694         if ( len == 0 ) {
1695                 tag = ber_skip_tag( ber, &len );
1696
1697         } else if ( len > 65536 ) {
1698                 rs->sr_text = "sessionTracking.sessionSourceName too long";
1699                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1700                 goto error;
1701
1702         } else {
1703                 tag = ber_scanf( ber, "m", &sessionSourceName );
1704         }
1705
1706         if ( ldif_is_not_printable( sessionSourceName.bv_val, sessionSourceName.bv_len ) ) {
1707                 BER_BVZERO( &sessionSourceName );
1708         }
1709
1710         /* formatOID */
1711         tag = ber_peek_tag( ber, &len );
1712         if ( tag == LBER_DEFAULT ) {
1713                 tag = LBER_ERROR;
1714                 goto error;
1715         }
1716
1717         if ( len == 0 ) {
1718                 rs->sr_text = "sessionTracking.formatOID empty";
1719                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1720                 goto error;
1721
1722         } else if ( len > 1024 ) {
1723                 rs->sr_text = "sessionTracking.formatOID too long";
1724                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1725                 goto error;
1726
1727         } else {
1728                 tag = ber_scanf( ber, "m", &formatOID );
1729         }
1730
1731         rc = numericoidValidate( NULL, &formatOID );
1732         if ( rc != LDAP_SUCCESS ) {
1733                 rs->sr_text = "sessionTracking.formatOID invalid";
1734                 goto error;
1735         }
1736
1737         for ( i = 0; !BER_BVISNULL( &session_tracking_formats[ i ] ); i += 2 )
1738         {
1739                 if ( bvmatch( &formatOID, &session_tracking_formats[ i ] ) ) {
1740                         formatOID = session_tracking_formats[ i + 1 ];
1741                         break;
1742                 }
1743         }
1744
1745         /* sessionTrackingIdentifier */
1746         tag = ber_peek_tag( ber, &len );
1747         if ( tag == LBER_DEFAULT ) {
1748                 tag = LBER_ERROR;
1749                 goto error;
1750         }
1751
1752         if ( len == 0 ) {
1753                 tag = ber_skip_tag( ber, &len );
1754
1755         } else {
1756                 /* note: should not be more than 65536... */
1757                 tag = ber_scanf( ber, "m", &sessionTrackingIdentifier );
1758         }
1759
1760         if ( ldif_is_not_printable( sessionTrackingIdentifier.bv_val, sessionTrackingIdentifier.bv_len ) ) {
1761                 /* we want the OID printed, at least */
1762                 BER_BVSTR( &sessionTrackingIdentifier, "" );
1763         }
1764
1765         /* closure */
1766         tag = ber_skip_tag( ber, &len );
1767         if ( tag == LBER_DEFAULT && len == 0 ) {
1768                 tag = 0;
1769         }
1770
1771         st_len = 0;
1772         if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1773                 st_len += STRLENOF( "IP=" ) + sessionSourceIp.bv_len;
1774         }
1775         if ( !BER_BVISNULL( &sessionSourceName ) ) {
1776                 if ( st_len ) st_len++;
1777                 st_len += STRLENOF( "NAME=" ) + sessionSourceName.bv_len;
1778         }
1779         if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1780                 if ( st_len ) st_len++;
1781                 st_len += formatOID.bv_len + STRLENOF( "=" )
1782                         + sessionTrackingIdentifier.bv_len;
1783         }
1784
1785         if ( st_len == 0 ) {
1786                 goto error;
1787         }
1788
1789         st_len += STRLENOF( " []" );
1790         st_pos = strlen( op->o_log_prefix );
1791
1792         if ( sizeof( op->o_log_prefix ) - st_pos > st_len ) {
1793                 char    *ptr = &op->o_log_prefix[ st_pos ];
1794
1795                 ptr = lutil_strcopy( ptr, " [" /*]*/ );
1796
1797                 st_len = 0;
1798                 if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1799                         ptr = lutil_strcopy( ptr, "IP=" );
1800                         ptr = lutil_strcopy( ptr, sessionSourceIp.bv_val );
1801                         st_len++;
1802                 }
1803
1804                 if ( !BER_BVISNULL( &sessionSourceName ) ) {
1805                         if ( st_len ) *ptr++ = ' ';
1806                         ptr = lutil_strcopy( ptr, "NAME=" );
1807                         ptr = lutil_strcopy( ptr, sessionSourceName.bv_val );
1808                         st_len++;
1809                 }
1810
1811                 if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1812                         if ( st_len ) *ptr++ = ' ';
1813                         ptr = lutil_strcopy( ptr, formatOID.bv_val );
1814                         *ptr++ = '=';
1815                         ptr = lutil_strcopy( ptr, sessionTrackingIdentifier.bv_val );
1816                 }
1817
1818                 *ptr++ = /*[*/ ']';
1819                 *ptr = '\0';
1820         }
1821
1822 error:;
1823         (void)ber_free( ber, 1 );
1824
1825         if ( tag == LBER_ERROR ) {
1826                 rs->sr_text = "sessionTracking control decoding error";
1827                 return LDAP_PROTOCOL_ERROR;
1828         }
1829
1830
1831         return rs->sr_err;
1832 }
1833 #endif