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 1998-2008 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 "ldif.h"
  25 #include "lutil.h"
  26
  27 #include "../../libraries/liblber/lber-int.h"
  28
  29 static SLAP_CTRL_PARSE_FN parseAssert;
  30 static SLAP_CTRL_PARSE_FN parseDomainScope;
  31 static SLAP_CTRL_PARSE_FN parseDontUseCopy;
  32 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  33 static SLAP_CTRL_PARSE_FN parseNoOp;
  34 static SLAP_CTRL_PARSE_FN parsePagedResults;
  35 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  36 static SLAP_CTRL_PARSE_FN parsePreRead, parsePostRead;
  37 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  38 static SLAP_CTRL_PARSE_FN parseRelax;
  39 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  40 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
  41 static SLAP_CTRL_PARSE_FN parseSortedResults;
  42 #endif
  43 static SLAP_CTRL_PARSE_FN parseSubentries;
  44 #ifdef SLAP_CONTROL_X_TREE_DELETE
  45 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  46 #endif
  47 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  48 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  49 static SLAP_CTRL_PARSE_FN parseSessionTracking;
  50 #endif
  51
  52 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  53
  54 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  55 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  56
  57 struct slap_control_ids slap_cids;
  58
  59 struct slap_control {
  60         /* Control OID */
  61         char *sc_oid;
  62
  63         /* The controlID for this control */
  64         int sc_cid;
  65
  66         /* Operations supported by control */
  67         slap_mask_t sc_mask;
  68
  69         /* Extended operations supported by control */
  70         char **sc_extendedops;          /* input */
  71         BerVarray sc_extendedopsbv;     /* run-time use */
  72
  73         /* Control parsing callback */
  74         SLAP_CTRL_PARSE_FN *sc_parse;
  75
  76         LDAP_SLIST_ENTRY(slap_control) sc_next;
  77 };
  78
  79 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  80         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  81
  82 /*
  83  * all known request control OIDs should be added to this list
  84  */
  85 /*
  86  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  87  * addresses an undefined control; this allows to safely test for
  88  * well known controls even if they are not registered, e.g. if
  89  * they get moved to modules.  An example is sc_LDAPsync, which
  90  * is implemented in the syncprov overlay and thus, if configured
  91  * as dynamic module, may not be registered.  One side effect is that
  92  * slap_known_controls[0] == NULL, so it should always be used
  93  * starting from 1.
  94  * FIXME: should we define the "undefined control" oid?
  95  */
  96 char *slap_known_controls[SLAP_MAX_CIDS+1];
  97 static int num_known_controls = 1;
  98
  99 static char *proxy_authz_extops[] = {
 100         LDAP_EXOP_MODIFY_PASSWD,
 101         LDAP_EXOP_WHO_AM_I,
 102         LDAP_EXOP_REFRESH,
 103         NULL
 104 };
 105
 106 static char *manageDSAit_extops[] = {
 107         LDAP_EXOP_REFRESH,
 108         NULL
 109 };
 110
 111 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 112 static char *session_tracking_extops[] = {
 113         LDAP_EXOP_MODIFY_PASSWD,
 114         LDAP_EXOP_WHO_AM_I,
 115         LDAP_EXOP_REFRESH,
 116         NULL
 117 };
 118 #endif
 119
 120 static struct slap_control control_defs[] = {
 121         {  LDAP_CONTROL_ASSERT,
 122                 (int)offsetof(struct slap_control_ids, sc_assert),
 123                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME|
 124                         SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH,
 125                 NULL, NULL,
 126                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 127         { LDAP_CONTROL_PRE_READ,
 128                 (int)offsetof(struct slap_control_ids, sc_preRead),
 129                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 130                 NULL, NULL,
 131                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 132         { LDAP_CONTROL_POST_READ,
 133                 (int)offsetof(struct slap_control_ids, sc_postRead),
 134                 SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 135                 NULL, NULL,
 136                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 137         { LDAP_CONTROL_VALUESRETURNFILTER,
 138                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 139                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH,
 140                 NULL, NULL,
 141                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 142         { LDAP_CONTROL_PAGEDRESULTS,
 143                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 144                 SLAP_CTRL_SEARCH,
 145                 NULL, NULL,
 146                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 147 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 148         { LDAP_CONTROL_SORTREQUEST,
 149                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 150                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 151                 NULL, NULL,
 152                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 153 #endif
 154         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 155                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 156                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 157                 NULL, NULL,
 158                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 159         { LDAP_CONTROL_DONTUSECOPY,
 160                 (int)offsetof(struct slap_control_ids, sc_dontUseCopy),
 161                 SLAP_CTRL_GLOBAL|SLAP_CTRL_INTROGATE|SLAP_CTRL_HIDE,
 162                 NULL, NULL,
 163                 parseDontUseCopy, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 164         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 165                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 166                 SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE,
 167                 NULL, NULL,
 168                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 169 #ifdef SLAP_CONTROL_X_TREE_DELETE
 170         { LDAP_CONTROL_X_TREE_DELETE,
 171                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 172                 SLAP_CTRL_DELETE|SLAP_CTRL_HIDE,
 173                 NULL, NULL,
 174                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 175 #endif
 176         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 177                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 178                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 179                 NULL, NULL,
 180                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 181         { LDAP_CONTROL_SUBENTRIES,
 182                 (int)offsetof(struct slap_control_ids, sc_subentries),
 183                 SLAP_CTRL_SEARCH,
 184                 NULL, NULL,
 185                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 186         { LDAP_CONTROL_NOOP,
 187                 (int)offsetof(struct slap_control_ids, sc_noOp),
 188                 SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE,
 189                 NULL, NULL,
 190                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 191         { LDAP_CONTROL_RELAX,
 192                 (int)offsetof(struct slap_control_ids, sc_relax),
 193                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 194                 NULL, NULL,
 195                 parseRelax, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 196 #ifdef LDAP_X_TXN
 197         { LDAP_CONTROL_X_TXN_SPEC,
 198                 (int)offsetof(struct slap_control_ids, sc_txnSpec),
 199                 SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 200                 NULL, NULL,
 201                 txn_spec_ctrl, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 202 #endif
 203         { LDAP_CONTROL_MANAGEDSAIT,
 204                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 205                 SLAP_CTRL_ACCESS,
 206                 manageDSAit_extops, NULL,
 207                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 208         { LDAP_CONTROL_PROXY_AUTHZ,
 209                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 210                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS,
 211                 proxy_authz_extops, NULL,
 212                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 213 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 214         { LDAP_CONTROL_X_SESSION_TRACKING,
 215                 (int)offsetof(struct slap_control_ids, sc_sessionTracking),
 216                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS|SLAP_CTRL_BIND|SLAP_CTRL_HIDE,
 217                 session_tracking_extops, NULL,
 218                 parseSessionTracking, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 219 #endif
 220         { NULL, 0, 0, NULL, 0, NULL, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 221 };
 222
 223 static struct slap_control *
 224 find_ctrl( const char *oid );
 225
 226 /*
 227  * Register a supported control.
 228  *
 229  * This can be called by an OpenLDAP plugin or, indirectly, by a
 230  * SLAPI plugin calling slapi_register_supported_control().
 231  *
 232  * NOTE: if flags == 1 the control is replaced if already registered;
 233  * otherwise registering an already registered control is not allowed.
 234  */
 235 int
 236 register_supported_control2(const char *controloid,
 237         slap_mask_t controlmask,
 238         char **controlexops,
 239         SLAP_CTRL_PARSE_FN *controlparsefn,
 240         unsigned flags,
 241         int *controlcid)
 242 {
 243         struct slap_control *sc = NULL;
 244         int i;
 245         BerVarray extendedopsbv = NULL;
 246
 247         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 248                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 249                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 250                 SLAP_MAX_CIDS, 0, 0 );
 251                 return LDAP_OTHER;
 252         }
 253
 254         if ( controloid == NULL ) {
 255                 return LDAP_PARAM_ERROR;
 256         }
 257
 258         /* check if already registered */
 259         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 260                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 261                         if ( flags == 1 ) {
 262                                 Debug( LDAP_DEBUG_TRACE,
 263                                         "Control %s already registered; replacing.\n",
 264                                         controloid, 0, 0 );
 265                                 /* (find and) replace existing handler */
 266                                 sc = find_ctrl( controloid );
 267                                 assert( sc != NULL );
 268                                 break;
 269                         }
 270
 271                         Debug( LDAP_DEBUG_ANY,
 272                                 "Control %s already registered.\n",
 273                                 controloid, 0, 0 );
 274                         return LDAP_PARAM_ERROR;
 275                 }
 276         }
 277
 278         /* turn compatible extended operations into bervals */
 279         if ( controlexops != NULL ) {
 280                 int i;
 281
 282                 for ( i = 0; controlexops[ i ]; i++ );
 283
 284                 extendedopsbv = ber_memcalloc( i + 1, sizeof( struct berval ) );
 285                 if ( extendedopsbv == NULL ) {
 286                         return LDAP_NO_MEMORY;
 287                 }
 288
 289                 for ( i = 0; controlexops[ i ]; i++ ) {
 290                         ber_str2bv( controlexops[ i ], 0, 1, &extendedopsbv[ i ] );
 291                 }
 292         }
 293
 294         if ( sc == NULL ) {
 295                 sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 296                 if ( sc == NULL ) {
 297                         return LDAP_NO_MEMORY;
 298                 }
 299
 300                 sc->sc_oid = ch_strdup( controloid );
 301                 sc->sc_cid = num_known_controls;
 302
 303                 /* Update slap_known_controls, too. */
 304                 slap_known_controls[num_known_controls - 1] = sc->sc_oid;
 305                 slap_known_controls[num_known_controls++] = NULL;
 306
 307                 LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 308                 LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 309
 310         } else {
 311                 if ( sc->sc_extendedopsbv ) {
 312                         /* FIXME: in principle, we should rather merge
 313                          * existing extops with those supported by the
 314                          * new control handling implementation.
 315                          * In fact, whether a control is compatible with
 316                          * an extop should not be a matter of implementation.
 317                          * We likely also need a means for a newly
 318                          * registered extop to declare that it is
 319                          * comptible with an already registered control.
 320                          */
 321                         ber_bvarray_free( sc->sc_extendedopsbv );
 322                         sc->sc_extendedopsbv = NULL;
 323                         sc->sc_extendedops = NULL;
 324                 }
 325         }
 326
 327         sc->sc_extendedopsbv = extendedopsbv;
 328         sc->sc_mask = controlmask;
 329         sc->sc_parse = controlparsefn;
 330         if ( controlcid ) {
 331                 *controlcid = sc->sc_cid;
 332         }
 333
 334         return LDAP_SUCCESS;
 335 }
 336
 337 /*
 338  * One-time initialization of internal controls.
 339  */
 340 int
 341 slap_controls_init( void )
 342 {
 343         int i, rc;
 344
 345         rc = LDAP_SUCCESS;
 346
 347         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 348                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 349                 rc = register_supported_control( control_defs[i].sc_oid,
 350                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 351                         control_defs[i].sc_parse, cid );
 352                 if ( rc != LDAP_SUCCESS ) break;
 353         }
 354
 355         return rc;
 356 }
 357
 358 /*
 359  * Free memory associated with list of supported controls.
 360  */
 361 void
 362 controls_destroy( void )
 363 {
 364         struct slap_control *sc;
 365
 366         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 367                 sc = LDAP_SLIST_FIRST(&controls_list);
 368                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 369
 370                 ch_free( sc->sc_oid );
 371                 if ( sc->sc_extendedopsbv != NULL ) {
 372                         ber_bvarray_free( sc->sc_extendedopsbv );
 373                 }
 374                 ch_free( sc );
 375         }
 376 }
 377
 378 /*
 379  * Format the supportedControl attribute of the root DSE,
 380  * detailing which controls are supported by the directory
 381  * server.
 382  */
 383 int
 384 controls_root_dse_info( Entry *e )
 385 {
 386         AttributeDescription *ad_supportedControl
 387                 = slap_schema.si_ad_supportedControl;
 388         struct berval vals[2];
 389         struct slap_control *sc;
 390
 391         vals[1].bv_val = NULL;
 392         vals[1].bv_len = 0;
 393
 394         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 395                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 396
 397                 vals[0].bv_val = sc->sc_oid;
 398                 vals[0].bv_len = strlen( sc->sc_oid );
 399
 400                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 401                         return -1;
 402                 }
 403         }
 404
 405         return 0;
 406 }
 407
 408 /*
 409  * Return a list of OIDs and operation masks for supported
 410  * controls. Used by SLAPI.
 411  */
 412 int
 413 get_supported_controls(char ***ctrloidsp,
 414         slap_mask_t **ctrlmasks)
 415 {
 416         int n;
 417         char **oids;
 418         slap_mask_t *masks;
 419         struct slap_control *sc;
 420
 421         n = 0;
 422
 423         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 424                 n++;
 425         }
 426
 427         if ( n == 0 ) {
 428                 *ctrloidsp = NULL;
 429                 *ctrlmasks = NULL;
 430                 return LDAP_SUCCESS;
 431         }
 432
 433         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 434         if ( oids == NULL ) {
 435                 return LDAP_NO_MEMORY;
 436         }
 437         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 438         if  ( masks == NULL ) {
 439                 SLAP_FREE( oids );
 440                 return LDAP_NO_MEMORY;
 441         }
 442
 443         n = 0;
 444
 445         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 446                 oids[n] = ch_strdup( sc->sc_oid );
 447                 masks[n] = sc->sc_mask;
 448                 n++;
 449         }
 450         oids[n] = NULL;
 451         masks[n] = 0;
 452
 453         *ctrloidsp = oids;
 454         *ctrlmasks = masks;
 455
 456         return LDAP_SUCCESS;
 457 }
 458
 459 /*
 460  * Find a control given its OID.
 461  */
 462 static struct slap_control *
 463 find_ctrl( const char *oid )
 464 {
 465         struct slap_control *sc;
 466
 467         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 468                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 469                         return sc;
 470                 }
 471         }
 472
 473         return NULL;
 474 }
 475
 476 int
 477 slap_find_control_id(
 478         const char *oid,
 479         int *cid )
 480 {
 481         struct slap_control *ctrl = find_ctrl( oid );
 482         if ( ctrl ) {
 483                 if ( cid ) *cid = ctrl->sc_cid;
 484                 return LDAP_SUCCESS;
 485         }
 486         return LDAP_CONTROL_NOT_FOUND;
 487 }
 488
 489 int
 490 slap_global_control( Operation *op, const char *oid, int *cid )
 491 {
 492         struct slap_control *ctrl = find_ctrl( oid );
 493
 494         if ( ctrl == NULL ) {
 495                 /* should not be reachable */
 496                 Debug( LDAP_DEBUG_ANY,
 497                         "slap_global_control: unrecognized control: %s\n",
 498                         oid, 0, 0 );
 499                 return LDAP_CONTROL_NOT_FOUND;
 500         }
 501
 502         if ( cid ) *cid = ctrl->sc_cid;
 503
 504         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 505                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 506                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 507         {
 508                 return LDAP_COMPARE_TRUE;
 509         }
 510
 511 #if 0
 512         Debug( LDAP_DEBUG_TRACE,
 513                 "slap_global_control: unavailable control: %s\n",
 514                 oid, 0, 0 );
 515 #endif
 516
 517         return LDAP_COMPARE_FALSE;
 518 }
 519
 520 void slap_free_ctrls(
 521         Operation *op,
 522         LDAPControl **ctrls )
 523 {
 524         int i;
 525
 526         for (i=0; ctrls[i]; i++) {
 527                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 528         }
 529         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 530 }
 531
 532 int slap_parse_ctrl(
 533         Operation *op,
 534         SlapReply *rs,
 535         LDAPControl *control,
 536         const char **text )
 537 {
 538         struct slap_control *sc;
 539
 540         sc = find_ctrl( control->ldctl_oid );
 541         if( sc != NULL ) {
 542                 /* recognized control */
 543                 slap_mask_t tagmask;
 544                 switch( op->o_tag ) {
 545                 case LDAP_REQ_ADD:
 546                         tagmask = SLAP_CTRL_ADD;
 547                         break;
 548                 case LDAP_REQ_BIND:
 549                         tagmask = SLAP_CTRL_BIND;
 550                         break;
 551                 case LDAP_REQ_COMPARE:
 552                         tagmask = SLAP_CTRL_COMPARE;
 553                         break;
 554                 case LDAP_REQ_DELETE:
 555                         tagmask = SLAP_CTRL_DELETE;
 556                         break;
 557                 case LDAP_REQ_MODIFY:
 558                         tagmask = SLAP_CTRL_MODIFY;
 559                         break;
 560                 case LDAP_REQ_RENAME:
 561                         tagmask = SLAP_CTRL_RENAME;
 562                         break;
 563                 case LDAP_REQ_SEARCH:
 564                         tagmask = SLAP_CTRL_SEARCH;
 565                         break;
 566                 case LDAP_REQ_UNBIND:
 567                         tagmask = SLAP_CTRL_UNBIND;
 568                         break;
 569                 case LDAP_REQ_ABANDON:
 570                         tagmask = SLAP_CTRL_ABANDON;
 571                         break;
 572                 case LDAP_REQ_EXTENDED:
 573                         tagmask=~0L;
 574                         assert( op->ore_reqoid.bv_val != NULL );
 575                         if( sc->sc_extendedopsbv != NULL ) {
 576                                 int i;
 577                                 for( i=0; !BER_BVISNULL( &sc->sc_extendedopsbv[i] ); i++ ) {
 578                                         if( bvmatch( &op->ore_reqoid,
 579                                                 &sc->sc_extendedopsbv[i] ) )
 580                                         {
 581                                                 tagmask=0L;
 582                                                 break;
 583                                         }
 584                                 }
 585                         }
 586                         break;
 587                 default:
 588                         *text = "controls internal error";
 589                         return LDAP_OTHER;
 590                 }
 591
 592                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 593                         /* available extension */
 594                         int     rc;
 595
 596                         if( !sc->sc_parse ) {
 597                                 *text = "not yet implemented";
 598                                 return LDAP_OTHER;
 599                         }
 600
 601                         rc = sc->sc_parse( op, rs, control );
 602                         if ( rc ) {
 603                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 604                                 return rc;
 605                         }
 606
 607                 } else if( control->ldctl_iscritical ) {
 608                         /* unavailable CRITICAL control */
 609                         *text = "critical extension is unavailable";
 610                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 611                 }
 612         } else if( control->ldctl_iscritical ) {
 613                 /* unrecognized CRITICAL control */
 614                 *text = "critical extension is not recognized";
 615                 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 616         }
 617
 618         return LDAP_SUCCESS;
 619 }
 620
 621 int get_ctrls(
 622         Operation *op,
 623         SlapReply *rs,
 624         int sendres )
 625 {
 626         int nctrls = 0;
 627         ber_tag_t tag;
 628         ber_len_t len;
 629         char *opaque;
 630         BerElement *ber = op->o_ber;
 631         struct berval bv;
 632
 633         len = ber_pvt_ber_remaining(ber);
 634
 635         if( len == 0) {
 636                 /* no controls */
 637                 rs->sr_err = LDAP_SUCCESS;
 638                 return rs->sr_err;
 639         }
 640
 641         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 642                 if( tag == LBER_ERROR ) {
 643                         rs->sr_err = SLAPD_DISCONNECT;
 644                         rs->sr_text = "unexpected data in PDU";
 645                 }
 646
 647                 goto return_results;
 648         }
 649
 650         Debug( LDAP_DEBUG_TRACE,
 651                 "=> get_ctrls\n", 0, 0, 0 );
 652
 653         if( op->o_protocol < LDAP_VERSION3 ) {
 654                 rs->sr_err = SLAPD_DISCONNECT;
 655                 rs->sr_text = "controls require LDAPv3";
 656                 goto return_results;
 657         }
 658
 659         /* one for first control, one for termination */
 660         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 661
 662 #if 0
 663         if( op->ctrls == NULL ) {
 664                 rs->sr_err = LDAP_NO_MEMORY;
 665                 rs->sr_text = "no memory";
 666                 goto return_results;
 667         }
 668 #endif
 669
 670         op->o_ctrls[nctrls] = NULL;
 671
 672         /* step through each element */
 673         for( tag = ber_first_element( ber, &len, &opaque );
 674                 tag != LBER_ERROR;
 675                 tag = ber_next_element( ber, &len, opaque ) )
 676         {
 677                 LDAPControl *c;
 678                 LDAPControl **tctrls;
 679
 680                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 681                 memset(c, 0, sizeof(LDAPControl));
 682
 683                 /* allocate pointer space for current controls (nctrls)
 684                  * + this control + extra NULL
 685                  */
 686                 tctrls = op->o_tmprealloc( op->o_ctrls,
 687                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 688
 689 #if 0
 690                 if( tctrls == NULL ) {
 691                         ch_free( c );
 692                         ldap_controls_free(op->o_ctrls);
 693                         op->o_ctrls = NULL;
 694
 695                         rs->sr_err = LDAP_NO_MEMORY;
 696                         rs->sr_text = "no memory";
 697                         goto return_results;
 698                 }
 699 #endif
 700                 op->o_ctrls = tctrls;
 701
 702                 op->o_ctrls[nctrls++] = c;
 703                 op->o_ctrls[nctrls] = NULL;
 704
 705                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 706                 c->ldctl_oid = bv.bv_val;
 707
 708                 if( tag == LBER_ERROR ) {
 709                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 710                                 0, 0, 0 );
 711
 712                         slap_free_ctrls( op, op->o_ctrls );
 713                         op->o_ctrls = NULL;
 714                         rs->sr_err = SLAPD_DISCONNECT;
 715                         rs->sr_text = "decoding controls error";
 716                         goto return_results;
 717
 718                 } else if( c->ldctl_oid == NULL ) {
 719                         Debug( LDAP_DEBUG_TRACE,
 720                                 "get_ctrls: conn %lu got emtpy OID.\n",
 721                                 op->o_connid, 0, 0 );
 722
 723                         slap_free_ctrls( op, op->o_ctrls );
 724                         op->o_ctrls = NULL;
 725                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 726                         rs->sr_text = "OID field is empty";
 727                         goto return_results;
 728                 }
 729
 730                 tag = ber_peek_tag( ber, &len );
 731
 732                 if( tag == LBER_BOOLEAN ) {
 733                         ber_int_t crit;
 734                         tag = ber_scanf( ber, "b", &crit );
 735
 736                         if( tag == LBER_ERROR ) {
 737                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 738                                         0, 0, 0 );
 739                                 slap_free_ctrls( op, op->o_ctrls );
 740                                 op->o_ctrls = NULL;
 741                                 rs->sr_err = SLAPD_DISCONNECT;
 742                                 rs->sr_text = "decoding controls error";
 743                                 goto return_results;
 744                         }
 745
 746                         c->ldctl_iscritical = (crit != 0);
 747                         tag = ber_peek_tag( ber, &len );
 748                 }
 749
 750                 if( tag == LBER_OCTETSTRING ) {
 751                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 752
 753                         if( tag == LBER_ERROR ) {
 754                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 755                                         "%s (%scritical): get value failed.\n",
 756                                         op->o_connid, c->ldctl_oid,
 757                                         c->ldctl_iscritical ? "" : "non" );
 758                                 slap_free_ctrls( op, op->o_ctrls );
 759                                 op->o_ctrls = NULL;
 760                                 rs->sr_err = SLAPD_DISCONNECT;
 761                                 rs->sr_text = "decoding controls error";
 762                                 goto return_results;
 763                         }
 764                 }
 765
 766                 Debug( LDAP_DEBUG_TRACE,
 767                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 768                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 769
 770                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 771                 if ( rs->sr_err != LDAP_SUCCESS ) {
 772                         goto return_results;
 773                 }
 774         }
 775
 776 return_results:
 777         Debug( LDAP_DEBUG_TRACE,
 778                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 779                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 780
 781         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 782                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 783                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 784                         send_ldap_disconnect( op, rs );
 785                         rs->sr_err = SLAPD_DISCONNECT;
 786                 } else {
 787                         send_ldap_result( op, rs );
 788                 }
 789         }
 790
 791         return rs->sr_err;
 792 }
 793
 794 int
 795 slap_remove_control(
 796         Operation       *op,
 797         SlapReply       *rs,
 798         int             ctrl,
 799         BI_chk_controls fnc )
 800 {
 801         int             i, j;
 802
 803         switch ( op->o_ctrlflag[ ctrl ] ) {
 804         case SLAP_CONTROL_NONCRITICAL:
 805                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 806                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 807                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 808                         {
 809                                 j = i;
 810                         }
 811                 }
 812
 813                 if ( j == -1 ) {
 814                         rs->sr_err = LDAP_OTHER;
 815                         break;
 816                 }
 817
 818                 if ( fnc ) {
 819                         (void)fnc( op, rs );
 820                 }
 821
 822                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 823
 824                 if ( i > 1 ) {
 825                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 826                                 ( i - j ) * sizeof( LDAPControl * ) );
 827
 828                 } else {
 829                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
 830                         op->o_ctrls = NULL;
 831                 }
 832
 833                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
 834
 835                 Debug( LDAP_DEBUG_ANY, "%s: "
 836                         "non-critical control \"%s\" not supported; stripped.\n",
 837                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 838                 /* fall thru */
 839
 840         case SLAP_CONTROL_IGNORED:
 841         case SLAP_CONTROL_NONE:
 842                 rs->sr_err = SLAP_CB_CONTINUE;
 843                 break;
 844
 845         case SLAP_CONTROL_CRITICAL:
 846                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 847                 if ( fnc ) {
 848                         (void)fnc( op, rs );
 849                 }
 850                 Debug( LDAP_DEBUG_ANY, "%s: "
 851                         "critical control \"%s\" not supported.\n",
 852                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 853                 break;
 854
 855         default:
 856                 /* handle all cases! */
 857                 assert( 0 );
 858         }
 859
 860         return rs->sr_err;
 861 }
 862
 863 static int parseDontUseCopy (
 864         Operation *op,
 865         SlapReply *rs,
 866         LDAPControl *ctrl )
 867 {
 868         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
 869                 rs->sr_text = "dontUseCopy control specified multiple times";
 870                 return LDAP_PROTOCOL_ERROR;
 871         }
 872
 873         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 874                 rs->sr_text = "dontUseCopy control value not absent";
 875                 return LDAP_PROTOCOL_ERROR;
 876         }
 877
 878         if ( !ctrl->ldctl_iscritical ) {
 879                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
 880                 return LDAP_PROTOCOL_ERROR;
 881         }
 882
 883         op->o_dontUseCopy = SLAP_CONTROL_CRITICAL;
 884         return LDAP_SUCCESS;
 885 }
 886
 887 static int parseRelax (
 888         Operation *op,
 889         SlapReply *rs,
 890         LDAPControl *ctrl )
 891 {
 892         if ( op->o_relax != SLAP_CONTROL_NONE ) {
 893                 rs->sr_text = "relax control specified multiple times";
 894                 return LDAP_PROTOCOL_ERROR;
 895         }
 896
 897         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 898                 rs->sr_text = "relax control value not absent";
 899                 return LDAP_PROTOCOL_ERROR;
 900         }
 901
 902         op->o_relax = ctrl->ldctl_iscritical
 903                 ? SLAP_CONTROL_CRITICAL
 904                 : SLAP_CONTROL_NONCRITICAL;
 905
 906         return LDAP_SUCCESS;
 907 }
 908
 909 static int parseManageDSAit (
 910         Operation *op,
 911         SlapReply *rs,
 912         LDAPControl *ctrl )
 913 {
 914         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 915                 rs->sr_text = "manageDSAit control specified multiple times";
 916                 return LDAP_PROTOCOL_ERROR;
 917         }
 918
 919         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 920                 rs->sr_text = "manageDSAit control value not absent";
 921                 return LDAP_PROTOCOL_ERROR;
 922         }
 923
 924         op->o_managedsait = ctrl->ldctl_iscritical
 925                 ? SLAP_CONTROL_CRITICAL
 926                 : SLAP_CONTROL_NONCRITICAL;
 927
 928         return LDAP_SUCCESS;
 929 }
 930
 931 static int parseProxyAuthz (
 932         Operation *op,
 933         SlapReply *rs,
 934         LDAPControl *ctrl )
 935 {
 936         int             rc;
 937         struct berval   dn = BER_BVNULL;
 938
 939         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 940                 rs->sr_text = "proxy authorization control specified multiple times";
 941                 return LDAP_PROTOCOL_ERROR;
 942         }
 943
 944         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
 945                 rs->sr_text = "proxy authorization control value absent";
 946                 return LDAP_PROTOCOL_ERROR;
 947         }
 948
 949         if ( !( global_allows & SLAP_ALLOW_PROXY_AUTHZ_ANON )
 950                 && BER_BVISEMPTY( &op->o_ndn ) )
 951         {
 952                 rs->sr_text = "anonymous proxied authorization not allowed";
 953                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 954         }
 955
 956         op->o_proxy_authz = ctrl->ldctl_iscritical
 957                 ? SLAP_CONTROL_CRITICAL
 958                 : SLAP_CONTROL_NONCRITICAL;
 959
 960         Debug( LDAP_DEBUG_ARGS,
 961                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 962                 op->o_connid,
 963                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 964                 0 );
 965
 966         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
 967                 Debug( LDAP_DEBUG_TRACE,
 968                         "parseProxyAuthz: conn=%lu anonymous\n",
 969                         op->o_connid, 0, 0 );
 970
 971                 /* anonymous */
 972                 if ( !BER_BVISNULL( &op->o_ndn ) ) {
 973                         op->o_ndn.bv_val[ 0 ] = '\0';
 974                 }
 975                 op->o_ndn.bv_len = 0;
 976
 977                 if ( !BER_BVISNULL( &op->o_dn ) ) {
 978                         op->o_dn.bv_val[ 0 ] = '\0';
 979                 }
 980                 op->o_dn.bv_len = 0;
 981
 982                 return LDAP_SUCCESS;
 983         }
 984
 985         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 986                         NULL, &dn, SLAP_GETDN_AUTHZID );
 987
 988         /* FIXME: empty DN in proxyAuthz control should be legal... */
 989         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 990                 if ( dn.bv_val ) {
 991                         ch_free( dn.bv_val );
 992                 }
 993                 rs->sr_text = "authzId mapping failed";
 994                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 995         }
 996
 997         Debug( LDAP_DEBUG_TRACE,
 998                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 999                 op->o_connid,
1000                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
1001
1002         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
1003
1004         if ( rc ) {
1005                 ch_free( dn.bv_val );
1006                 rs->sr_text = "not authorized to assume identity";
1007                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1008         }
1009
1010         ch_free( op->o_ndn.bv_val );
1011         ch_free( op->o_dn.bv_val );
1012
1013         /*
1014          * NOTE: since slap_sasl_getdn() returns a normalized dn,
1015          * from now on op->o_dn is normalized
1016          */
1017         op->o_ndn = dn;
1018         ber_dupbv( &op->o_dn, &dn );
1019
1020         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
1021             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
1022
1023         return LDAP_SUCCESS;
1024 }
1025
1026 static int parseNoOp (
1027         Operation *op,
1028         SlapReply *rs,
1029         LDAPControl *ctrl )
1030 {
1031         if ( op->o_noop != SLAP_CONTROL_NONE ) {
1032                 rs->sr_text = "noop control specified multiple times";
1033                 return LDAP_PROTOCOL_ERROR;
1034         }
1035
1036         if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
1037                 rs->sr_text = "noop control value not empty";
1038                 return LDAP_PROTOCOL_ERROR;
1039         }
1040
1041         op->o_noop = ctrl->ldctl_iscritical
1042                 ? SLAP_CONTROL_CRITICAL
1043                 : SLAP_CONTROL_NONCRITICAL;
1044
1045         return LDAP_SUCCESS;
1046 }
1047
1048 static int parsePagedResults (
1049         Operation *op,
1050         SlapReply *rs,
1051         LDAPControl *ctrl )
1052 {
1053         BerElementBuffer berbuf;
1054         BerElement      *ber = (BerElement *)&berbuf;
1055         struct berval   cookie;
1056         PagedResultsState       *ps;
1057         int             rc = LDAP_SUCCESS;
1058         ber_tag_t       tag;
1059         ber_int_t       size;
1060
1061         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1062                 rs->sr_text = "paged results control specified multiple times";
1063                 return LDAP_PROTOCOL_ERROR;
1064         }
1065
1066         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1067                 rs->sr_text = "paged results control value is absent";
1068                 return LDAP_PROTOCOL_ERROR;
1069         }
1070
1071         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1072                 rs->sr_text = "paged results control value is empty";
1073                 return LDAP_PROTOCOL_ERROR;
1074         }
1075
1076         /* Parse the control value
1077          *      realSearchControlValue ::= SEQUENCE {
1078          *              size    INTEGER (0..maxInt),
1079          *                              -- requested page size from client
1080          *                              -- result set size estimate from server
1081          *              cookie  OCTET STRING
1082          * }
1083          */
1084         ber_init2( ber, &ctrl->ldctl_value, LBER_USE_DER );
1085
1086         tag = ber_scanf( ber, "{im}", &size, &cookie );
1087
1088         if ( tag == LBER_ERROR ) {
1089                 rs->sr_text = "paged results control could not be decoded";
1090                 rc = LDAP_PROTOCOL_ERROR;
1091                 goto done;
1092         }
1093
1094         if ( size < 0 ) {
1095                 rs->sr_text = "paged results control size invalid";
1096                 rc = LDAP_PROTOCOL_ERROR;
1097                 goto done;
1098         }
1099
1100         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
1101         *ps = op->o_conn->c_pagedresults_state;
1102         ps->ps_size = size;
1103         ps->ps_cookieval = cookie;
1104         op->o_pagedresults_state = ps;
1105
1106         /* NOTE: according to RFC 2696 3.:
1107
1108     If the page size is greater than or equal to the sizeLimit value, the
1109     server should ignore the control as the request can be satisfied in a
1110     single page.
1111
1112          * NOTE: this assumes that the op->ors_slimit be set
1113          * before the controls are parsed.
1114          */
1115
1116         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1117                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1118
1119         } else if ( ctrl->ldctl_iscritical ) {
1120                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1121
1122         } else {
1123                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1124         }
1125
1126 done:;
1127         return rc;
1128 }
1129
1130 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
1131 static int parseSortedResults (
1132         Operation *op,
1133         SlapReply *rs,
1134         LDAPControl *ctrl )
1135 {
1136         int             rc = LDAP_SUCCESS;
1137
1138         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1139                 rs->sr_text = "sorted results control specified multiple times";
1140                 return LDAP_PROTOCOL_ERROR;
1141         }
1142
1143         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1144                 rs->sr_text = "sorted results control value is absent";
1145                 return LDAP_PROTOCOL_ERROR;
1146         }
1147
1148         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1149                 rs->sr_text = "sorted results control value is empty";
1150                 return LDAP_PROTOCOL_ERROR;
1151         }
1152
1153         /* blow off parsing the value */
1154
1155         op->o_sortedresults = ctrl->ldctl_iscritical
1156                 ? SLAP_CONTROL_CRITICAL
1157                 : SLAP_CONTROL_NONCRITICAL;
1158
1159         return rc;
1160 }
1161 #endif
1162
1163 static int parseAssert (
1164         Operation *op,
1165         SlapReply *rs,
1166         LDAPControl *ctrl )
1167 {
1168         BerElement      *ber;
1169         struct berval   fstr = BER_BVNULL;
1170
1171         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1172                 rs->sr_text = "assert control specified multiple times";
1173                 return LDAP_PROTOCOL_ERROR;
1174         }
1175
1176         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1177                 rs->sr_text = "assert control value is absent";
1178                 return LDAP_PROTOCOL_ERROR;
1179         }
1180
1181         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1182                 rs->sr_text = "assert control value is empty";
1183                 return LDAP_PROTOCOL_ERROR;
1184         }
1185
1186         ber = ber_init( &(ctrl->ldctl_value) );
1187         if (ber == NULL) {
1188                 rs->sr_text = "assert control: internal error";
1189                 return LDAP_OTHER;
1190         }
1191
1192         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1193                 &rs->sr_text);
1194         (void) ber_free( ber, 1 );
1195         if( rs->sr_err != LDAP_SUCCESS ) {
1196                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1197                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1198                         send_ldap_disconnect( op, rs );
1199                         rs->sr_err = SLAPD_DISCONNECT;
1200                 } else {
1201                         send_ldap_result( op, rs );
1202                 }
1203                 if( op->o_assertion != NULL ) {
1204                         filter_free_x( op, op->o_assertion );
1205                 }
1206                 return rs->sr_err;
1207         }
1208
1209 #ifdef LDAP_DEBUG
1210         filter2bv_x( op, op->o_assertion, &fstr );
1211
1212         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1213                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1214         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1215 #endif
1216
1217         op->o_assert = ctrl->ldctl_iscritical
1218                 ? SLAP_CONTROL_CRITICAL
1219                 : SLAP_CONTROL_NONCRITICAL;
1220
1221         rs->sr_err = LDAP_SUCCESS;
1222         return LDAP_SUCCESS;
1223 }
1224
1225 static int parsePreRead (
1226         Operation *op,
1227         SlapReply *rs,
1228         LDAPControl *ctrl )
1229 {
1230         ber_len_t siz, off, i;
1231         AttributeName *an = NULL;
1232         BerElement      *ber;
1233
1234         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1235                 rs->sr_text = "preread control specified multiple times";
1236                 return LDAP_PROTOCOL_ERROR;
1237         }
1238
1239         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1240                 rs->sr_text = "preread control value is absent";
1241                 return LDAP_PROTOCOL_ERROR;
1242         }
1243
1244         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1245                 rs->sr_text = "preread control value is empty";
1246                 return LDAP_PROTOCOL_ERROR;
1247         }
1248
1249 #ifdef LDAP_X_TXN
1250         if ( op->o_txnSpec ) { /* temporary limitation */
1251                 rs->sr_text = "cannot perform pre-read in transaction";
1252                 return LDAP_UNWILLING_TO_PERFORM;
1253         }
1254 #endif
1255
1256         ber = ber_init( &(ctrl->ldctl_value) );
1257         if (ber == NULL) {
1258                 rs->sr_text = "preread control: internal error";
1259                 return LDAP_OTHER;
1260         }
1261
1262         rs->sr_err = LDAP_SUCCESS;
1263
1264         siz = sizeof( AttributeName );
1265         off = offsetof( AttributeName, an_name );
1266         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1267                 rs->sr_text = "preread control: decoding error";
1268                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1269                 goto done;
1270         }
1271
1272         for( i=0; i<siz; i++ ) {
1273                 const char      *dummy = NULL;
1274
1275                 an[i].an_desc = NULL;
1276                 an[i].an_oc = NULL;
1277                 an[i].an_oc_exclude = 0;
1278                 rs->sr_err = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1279                 if ( rs->sr_err != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1280                         rs->sr_text = dummy
1281                                 ? dummy
1282                                 : "postread control: unknown attributeType";
1283                         goto done;
1284                 }
1285         }
1286
1287         op->o_preread = ctrl->ldctl_iscritical
1288                 ? SLAP_CONTROL_CRITICAL
1289                 : SLAP_CONTROL_NONCRITICAL;
1290
1291         op->o_preread_attrs = an;
1292
1293 done:
1294         (void) ber_free( ber, 1 );
1295         return rs->sr_err;
1296 }
1297
1298 static int parsePostRead (
1299         Operation *op,
1300         SlapReply *rs,
1301         LDAPControl *ctrl )
1302 {
1303         ber_len_t siz, off, i;
1304         AttributeName *an = NULL;
1305         BerElement      *ber;
1306
1307         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1308                 rs->sr_text = "postread control specified multiple times";
1309                 return LDAP_PROTOCOL_ERROR;
1310         }
1311
1312         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1313                 rs->sr_text = "postread control value is absent";
1314                 return LDAP_PROTOCOL_ERROR;
1315         }
1316
1317         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1318                 rs->sr_text = "postread control value is empty";
1319                 return LDAP_PROTOCOL_ERROR;
1320         }
1321
1322 #ifdef LDAP_X_TXN
1323         if ( op->o_txnSpec ) { /* temporary limitation */
1324                 rs->sr_text = "cannot perform post-read in transaction";
1325                 return LDAP_UNWILLING_TO_PERFORM;
1326         }
1327 #endif
1328
1329         ber = ber_init( &(ctrl->ldctl_value) );
1330         if (ber == NULL) {
1331                 rs->sr_text = "postread control: internal error";
1332                 return LDAP_OTHER;
1333         }
1334
1335         rs->sr_err = LDAP_SUCCESS;
1336         siz = sizeof( AttributeName );
1337         off = offsetof( AttributeName, an_name );
1338         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1339                 rs->sr_text = "postread control: decoding error";
1340                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1341                 goto done;
1342         }
1343
1344         for ( i = 0; i < siz; i++ ) {
1345                 const char      *dummy = NULL;
1346                 int             rc;
1347
1348                 an[i].an_desc = NULL;
1349                 an[i].an_oc = NULL;
1350                 an[i].an_oc_exclude = 0;
1351                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1352                 if ( rc != LDAP_SUCCESS ) {
1353                         int                     i;
1354                         static struct berval    special_attrs[] = {
1355                                 BER_BVC( LDAP_NO_ATTRS ),
1356                                 BER_BVC( LDAP_ALL_USER_ATTRIBUTES ),
1357                                 BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ),
1358                                 BER_BVNULL
1359                         };
1360
1361                         /* deal with special attribute types */
1362                         for ( i = 0; !BER_BVISNULL( &special_attrs[ i ] ); i++ ) {
1363                                 if ( bvmatch( &an[i].an_name, &special_attrs[ i ] ) ) {
1364                                         break;
1365                                 }
1366                         }
1367
1368                         if ( BER_BVISNULL( &special_attrs[ i ] ) && ctrl->ldctl_iscritical ) {
1369                                 rs->sr_err = rc;
1370                                 rs->sr_text = dummy
1371                                         ? dummy
1372                                         : "postread control: unknown attributeType";
1373                                 goto done;
1374                         }
1375                 }
1376         }
1377
1378         op->o_postread = ctrl->ldctl_iscritical
1379                 ? SLAP_CONTROL_CRITICAL
1380                 : SLAP_CONTROL_NONCRITICAL;
1381
1382         op->o_postread_attrs = an;
1383
1384 done:
1385         (void) ber_free( ber, 1 );
1386         return rs->sr_err;
1387 }
1388
1389 static int parseValuesReturnFilter (
1390         Operation *op,
1391         SlapReply *rs,
1392         LDAPControl *ctrl )
1393 {
1394         BerElement      *ber;
1395         struct berval   fstr = BER_BVNULL;
1396
1397         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1398                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1399                 return LDAP_PROTOCOL_ERROR;
1400         }
1401
1402         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1403                 rs->sr_text = "valuesReturnFilter control value is absent";
1404                 return LDAP_PROTOCOL_ERROR;
1405         }
1406
1407         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1408                 rs->sr_text = "valuesReturnFilter control value is empty";
1409                 return LDAP_PROTOCOL_ERROR;
1410         }
1411
1412         ber = ber_init( &(ctrl->ldctl_value) );
1413         if (ber == NULL) {
1414                 rs->sr_text = "internal error";
1415                 return LDAP_OTHER;
1416         }
1417
1418         rs->sr_err = get_vrFilter( op, ber,
1419                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1420
1421         (void) ber_free( ber, 1 );
1422
1423         if( rs->sr_err != LDAP_SUCCESS ) {
1424                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1425                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1426                         send_ldap_disconnect( op, rs );
1427                         rs->sr_err = SLAPD_DISCONNECT;
1428                 } else {
1429                         send_ldap_result( op, rs );
1430                 }
1431                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1432         }
1433 #ifdef LDAP_DEBUG
1434         else {
1435                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1436         }
1437
1438         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1439                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1440         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1441 #endif
1442
1443         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1444                 ? SLAP_CONTROL_CRITICAL
1445                 : SLAP_CONTROL_NONCRITICAL;
1446
1447         rs->sr_err = LDAP_SUCCESS;
1448         return LDAP_SUCCESS;
1449 }
1450
1451 static int parseSubentries (
1452         Operation *op,
1453         SlapReply *rs,
1454         LDAPControl *ctrl )
1455 {
1456         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1457                 rs->sr_text = "subentries control specified multiple times";
1458                 return LDAP_PROTOCOL_ERROR;
1459         }
1460
1461         /* FIXME: should use BER library */
1462         if( ( ctrl->ldctl_value.bv_len != 3 )
1463                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1464                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1465         {
1466                 rs->sr_text = "subentries control value encoding is bogus";
1467                 return LDAP_PROTOCOL_ERROR;
1468         }
1469
1470         op->o_subentries = ctrl->ldctl_iscritical
1471                 ? SLAP_CONTROL_CRITICAL
1472                 : SLAP_CONTROL_NONCRITICAL;
1473
1474         if (ctrl->ldctl_value.bv_val[2]) {
1475                 set_subentries_visibility( op );
1476         }
1477
1478         return LDAP_SUCCESS;
1479 }
1480
1481 static int parsePermissiveModify (
1482         Operation *op,
1483         SlapReply *rs,
1484         LDAPControl *ctrl )
1485 {
1486         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1487                 rs->sr_text = "permissiveModify control specified multiple times";
1488                 return LDAP_PROTOCOL_ERROR;
1489         }
1490
1491         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1492                 rs->sr_text = "permissiveModify control value not absent";
1493                 return LDAP_PROTOCOL_ERROR;
1494         }
1495
1496         op->o_permissive_modify = ctrl->ldctl_iscritical
1497                 ? SLAP_CONTROL_CRITICAL
1498                 : SLAP_CONTROL_NONCRITICAL;
1499
1500         return LDAP_SUCCESS;
1501 }
1502
1503 static int parseDomainScope (
1504         Operation *op,
1505         SlapReply *rs,
1506         LDAPControl *ctrl )
1507 {
1508         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1509                 rs->sr_text = "domainScope control specified multiple times";
1510                 return LDAP_PROTOCOL_ERROR;
1511         }
1512
1513         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1514                 rs->sr_text = "domainScope control value not empty";
1515                 return LDAP_PROTOCOL_ERROR;
1516         }
1517
1518         op->o_domain_scope = ctrl->ldctl_iscritical
1519                 ? SLAP_CONTROL_CRITICAL
1520                 : SLAP_CONTROL_NONCRITICAL;
1521
1522         return LDAP_SUCCESS;
1523 }
1524
1525 #ifdef SLAP_CONTROL_X_TREE_DELETE
1526 static int parseTreeDelete (
1527         Operation *op,
1528         SlapReply *rs,
1529         LDAPControl *ctrl )
1530 {
1531         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1532                 rs->sr_text = "treeDelete control specified multiple times";
1533                 return LDAP_PROTOCOL_ERROR;
1534         }
1535
1536         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1537                 rs->sr_text = "treeDelete control value not absent";
1538                 return LDAP_PROTOCOL_ERROR;
1539         }
1540
1541         op->o_tree_delete = ctrl->ldctl_iscritical
1542                 ? SLAP_CONTROL_CRITICAL
1543                 : SLAP_CONTROL_NONCRITICAL;
1544
1545         return LDAP_SUCCESS;
1546 }
1547 #endif
1548
1549 static int parseSearchOptions (
1550         Operation *op,
1551         SlapReply *rs,
1552         LDAPControl *ctrl )
1553 {
1554         BerElement *ber;
1555         ber_int_t search_flags;
1556         ber_tag_t tag;
1557
1558         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1559                 rs->sr_text = "searchOptions control value is absent";
1560                 return LDAP_PROTOCOL_ERROR;
1561         }
1562
1563         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1564                 rs->sr_text = "searchOptions control value is empty";
1565                 return LDAP_PROTOCOL_ERROR;
1566         }
1567
1568         ber = ber_init( &ctrl->ldctl_value );
1569         if( ber == NULL ) {
1570                 rs->sr_text = "internal error";
1571                 return LDAP_OTHER;
1572         }
1573
1574         tag = ber_scanf( ber, "{i}", &search_flags );
1575         (void) ber_free( ber, 1 );
1576
1577         if ( tag == LBER_ERROR ) {
1578                 rs->sr_text = "searchOptions control decoding error";
1579                 return LDAP_PROTOCOL_ERROR;
1580         }
1581
1582         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1583                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1584                         rs->sr_text = "searchOptions control specified multiple times "
1585                                 "or with domainScope control";
1586                         return LDAP_PROTOCOL_ERROR;
1587                 }
1588
1589                 op->o_domain_scope = ctrl->ldctl_iscritical
1590                         ? SLAP_CONTROL_CRITICAL
1591                         : SLAP_CONTROL_NONCRITICAL;
1592         }
1593
1594         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1595                 /* Other search flags not recognised so far,
1596                  * including:
1597                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1598                  */
1599                 rs->sr_text = "searchOptions contained unrecognized flag";
1600                 return LDAP_UNWILLING_TO_PERFORM;
1601         }
1602
1603         return LDAP_SUCCESS;
1604 }
1605
1606 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
1607 struct berval session_tracking_formats[] = {
1608         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_SESSION_ID ),
1609                 BER_BVC( "RADIUS-Acct-Session-Id" ),
1610         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_MULTI_SESSION_ID ),
1611                 BER_BVC( "RADIUS-Acct-Multi-Session-Id" ),
1612         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME ),
1613                 BER_BVC( "USERNAME" ),
1614
1615         BER_BVNULL
1616 };
1617
1618 static int parseSessionTracking(
1619         Operation *op,
1620         SlapReply *rs,
1621         LDAPControl *ctrl )
1622 {
1623         BerElement              *ber;
1624         ber_tag_t               tag;
1625         ber_len_t               len;
1626         int                     i, rc;
1627
1628         struct berval           sessionSourceIp = BER_BVNULL,
1629                                 sessionSourceName = BER_BVNULL,
1630                                 formatOID = BER_BVNULL,
1631                                 sessionTrackingIdentifier = BER_BVNULL;
1632
1633         size_t                  st_len, st_pos;
1634
1635         if ( ctrl->ldctl_iscritical ) {
1636                 rs->sr_text = "sessionTracking criticality is TRUE";
1637                 return LDAP_PROTOCOL_ERROR;
1638         }
1639
1640         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1641                 rs->sr_text = "sessionTracking control value is absent";
1642                 return LDAP_PROTOCOL_ERROR;
1643         }
1644
1645         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1646                 rs->sr_text = "sessionTracking control value is empty";
1647                 return LDAP_PROTOCOL_ERROR;
1648         }
1649
1650         /* TODO: add the capability to determine if a client is allowed
1651          * to use this control, based on identity, ip and so */
1652
1653         ber = ber_init( &ctrl->ldctl_value );
1654         if ( ber == NULL ) {
1655                 rs->sr_text = "internal error";
1656                 return LDAP_OTHER;
1657         }
1658
1659         tag = ber_skip_tag( ber, &len );
1660         if ( tag != LBER_SEQUENCE ) {
1661                 tag = LBER_ERROR;
1662                 goto error;
1663         }
1664
1665         /* sessionSourceIp */
1666         tag = ber_peek_tag( ber, &len );
1667         if ( tag == LBER_DEFAULT ) {
1668                 tag = LBER_ERROR;
1669                 goto error;
1670         }
1671
1672         if ( len == 0 ) {
1673                 tag = ber_skip_tag( ber, &len );
1674
1675         } else if ( len > 128 ) {
1676                 rs->sr_text = "sessionTracking.sessionSourceIp too long";
1677                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1678                 goto error;
1679
1680         } else {
1681                 tag = ber_scanf( ber, "m", &sessionSourceIp );
1682         }
1683
1684         if ( ldif_is_not_printable( sessionSourceIp.bv_val, sessionSourceIp.bv_len ) ) {
1685                 BER_BVZERO( &sessionSourceIp );
1686         }
1687
1688         /* sessionSourceName */
1689         tag = ber_peek_tag( ber, &len );
1690         if ( tag == LBER_DEFAULT ) {
1691                 tag = LBER_ERROR;
1692                 goto error;
1693         }
1694
1695         if ( len == 0 ) {
1696                 tag = ber_skip_tag( ber, &len );
1697
1698         } else if ( len > 65536 ) {
1699                 rs->sr_text = "sessionTracking.sessionSourceName too long";
1700                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1701                 goto error;
1702
1703         } else {
1704                 tag = ber_scanf( ber, "m", &sessionSourceName );
1705         }
1706
1707         if ( ldif_is_not_printable( sessionSourceName.bv_val, sessionSourceName.bv_len ) ) {
1708                 BER_BVZERO( &sessionSourceName );
1709         }
1710
1711         /* formatOID */
1712         tag = ber_peek_tag( ber, &len );
1713         if ( tag == LBER_DEFAULT ) {
1714                 tag = LBER_ERROR;
1715                 goto error;
1716         }
1717
1718         if ( len == 0 ) {
1719                 rs->sr_text = "sessionTracking.formatOID empty";
1720                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1721                 goto error;
1722
1723         } else if ( len > 1024 ) {
1724                 rs->sr_text = "sessionTracking.formatOID too long";
1725                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1726                 goto error;
1727
1728         } else {
1729                 tag = ber_scanf( ber, "m", &formatOID );
1730         }
1731
1732         rc = numericoidValidate( NULL, &formatOID );
1733         if ( rc != LDAP_SUCCESS ) {
1734                 rs->sr_text = "sessionTracking.formatOID invalid";
1735                 goto error;
1736         }
1737
1738         for ( i = 0; !BER_BVISNULL( &session_tracking_formats[ i ] ); i += 2 )
1739         {
1740                 if ( bvmatch( &formatOID, &session_tracking_formats[ i ] ) ) {
1741                         formatOID = session_tracking_formats[ i + 1 ];
1742                         break;
1743                 }
1744         }
1745
1746         /* sessionTrackingIdentifier */
1747         tag = ber_peek_tag( ber, &len );
1748         if ( tag == LBER_DEFAULT ) {
1749                 tag = LBER_ERROR;
1750                 goto error;
1751         }
1752
1753         if ( len == 0 ) {
1754                 tag = ber_skip_tag( ber, &len );
1755
1756         } else {
1757                 /* note: should not be more than 65536... */
1758                 tag = ber_scanf( ber, "m", &sessionTrackingIdentifier );
1759                 if ( ldif_is_not_printable( sessionTrackingIdentifier.bv_val, sessionTrackingIdentifier.bv_len ) ) {
1760                         /* we want the OID printed, at least */
1761                         BER_BVSTR( &sessionTrackingIdentifier, "" );
1762                 }
1763         }
1764
1765         /* closure */
1766         tag = ber_skip_tag( ber, &len );
1767         if ( tag != LBER_DEFAULT || len != 0 ) {
1768                 tag = LBER_ERROR;
1769                 goto error;
1770         }
1771         tag = 0;
1772
1773         st_len = 0;
1774         if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1775                 st_len += STRLENOF( "IP=" ) + sessionSourceIp.bv_len;
1776         }
1777         if ( !BER_BVISNULL( &sessionSourceName ) ) {
1778                 if ( st_len ) st_len++;
1779                 st_len += STRLENOF( "NAME=" ) + sessionSourceName.bv_len;
1780         }
1781         if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1782                 if ( st_len ) st_len++;
1783                 st_len += formatOID.bv_len + STRLENOF( "=" )
1784                         + sessionTrackingIdentifier.bv_len;
1785         }
1786
1787         if ( st_len == 0 ) {
1788                 goto error;
1789         }
1790
1791         st_len += STRLENOF( " []" );
1792         st_pos = strlen( op->o_log_prefix );
1793
1794         if ( sizeof( op->o_log_prefix ) - st_pos > st_len ) {
1795                 char    *ptr = &op->o_log_prefix[ st_pos ];
1796
1797                 ptr = lutil_strcopy( ptr, " [" /*]*/ );
1798
1799                 st_len = 0;
1800                 if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1801                         ptr = lutil_strcopy( ptr, "IP=" );
1802                         ptr = lutil_strcopy( ptr, sessionSourceIp.bv_val );
1803                         st_len++;
1804                 }
1805
1806                 if ( !BER_BVISNULL( &sessionSourceName ) ) {
1807                         if ( st_len ) *ptr++ = ' ';
1808                         ptr = lutil_strcopy( ptr, "NAME=" );
1809                         ptr = lutil_strcopy( ptr, sessionSourceName.bv_val );
1810                         st_len++;
1811                 }
1812
1813                 if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1814                         if ( st_len ) *ptr++ = ' ';
1815                         ptr = lutil_strcopy( ptr, formatOID.bv_val );
1816                         *ptr++ = '=';
1817                         ptr = lutil_strcopy( ptr, sessionTrackingIdentifier.bv_val );
1818                 }
1819
1820                 *ptr++ = /*[*/ ']';
1821                 *ptr = '\0';
1822         }
1823
1824 error:;
1825         (void)ber_free( ber, 1 );
1826
1827         if ( tag == LBER_ERROR ) {
1828                 rs->sr_text = "sessionTracking control decoding error";
1829                 return LDAP_PROTOCOL_ERROR;
1830         }
1831
1832
1833         return rs->sr_err;
1834 }
1835
1836 int
1837 slap_ctrl_session_tracking_add(
1838         Operation *op,
1839         SlapReply *rs,
1840         struct berval *ip,
1841         struct berval *name,
1842         struct berval *id,
1843         LDAPControl *ctrl )
1844 {
1845         BerElementBuffer berbuf;
1846         BerElement      *ber = (BerElement *)&berbuf;
1847
1848         static struct berval    oid = BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME );
1849
1850         assert( ctrl != NULL );
1851
1852         ber_init2( ber, NULL, LBER_USE_DER );
1853
1854         ber_printf( ber, "{OOOO}", ip, name, &oid, id );
1855
1856         if ( ber_flatten2( ber, &ctrl->ldctl_value, 0 ) == -1 ) {
1857                 rs->sr_err = LDAP_OTHER;
1858                 goto done;
1859         }
1860
1861         ctrl->ldctl_oid = LDAP_CONTROL_X_SESSION_TRACKING;
1862         ctrl->ldctl_iscritical = 0;
1863
1864         rs->sr_err = LDAP_SUCCESS;
1865
1866 done:;
1867         return rs->sr_err;
1868 }
1869
1870 int
1871 slap_ctrl_session_tracking_request_add( Operation *op, SlapReply *rs, LDAPControl *ctrl )
1872 {
1873         static struct berval    bv_unknown = BER_BVC( SLAP_STRING_UNKNOWN );
1874         struct berval           ip = BER_BVNULL,
1875                                 name = BER_BVNULL,
1876                                 id = BER_BVNULL;
1877
1878         if ( !BER_BVISNULL( &op->o_conn->c_peer_name ) &&
1879                 memcmp( op->o_conn->c_peer_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
1880         {
1881                 char    *ptr;
1882
1883                 ip.bv_val = op->o_conn->c_peer_name.bv_val + STRLENOF( "IP=" );
1884                 ip.bv_len = op->o_conn->c_peer_name.bv_len - STRLENOF( "IP=" );
1885
1886                 ptr = ber_bvchr( &ip, ':' );
1887                 if ( ptr ) {
1888                         ip.bv_len = ptr - ip.bv_val;
1889                 }
1890         }
1891
1892         if ( !BER_BVISNULL( &op->o_conn->c_peer_domain ) &&
1893                 !bvmatch( &op->o_conn->c_peer_domain, &bv_unknown ) )
1894         {
1895                 name = op->o_conn->c_peer_domain;
1896         }
1897
1898         if ( !BER_BVISNULL( &op->o_dn ) && !BER_BVISEMPTY( &op->o_dn ) ) {
1899                 id = op->o_dn;
1900         }
1901
1902         return slap_ctrl_session_tracking_add( op, rs, &ip, &name, &id, ctrl );
1903 }
1904 #endif