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 1998-2005 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
  25 #include "../../libraries/liblber/lber-int.h"
  26
  27 static SLAP_CTRL_PARSE_FN parseAssert;
  28 static SLAP_CTRL_PARSE_FN parsePreRead;
  29 static SLAP_CTRL_PARSE_FN parsePostRead;
  30 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  31 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  32 static SLAP_CTRL_PARSE_FN parseModifyIncrement;
  33 static SLAP_CTRL_PARSE_FN parseNoOp;
  34 static SLAP_CTRL_PARSE_FN parsePagedResults;
  35 #ifdef LDAP_DEVEL
  36 static SLAP_CTRL_PARSE_FN parseSortedResults;
  37 #endif
  38 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  39 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  40 static SLAP_CTRL_PARSE_FN parseDomainScope;
  41 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  42 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  43 static SLAP_CTRL_PARSE_FN parseSubentries;
  44
  45 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  46
  47 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  48 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  49
  50 struct slap_control_ids slap_cids;
  51
  52 struct slap_control {
  53         /* Control OID */
  54         char *sc_oid;
  55
  56         /* The controlID for this control */
  57         int sc_cid;
  58
  59         /* Operations supported by control */
  60         slap_mask_t sc_mask;
  61
  62         /* Extended operations supported by control */
  63         char **sc_extendedops;
  64
  65         /* Control parsing callback */
  66         SLAP_CTRL_PARSE_FN *sc_parse;
  67
  68         LDAP_SLIST_ENTRY(slap_control) sc_next;
  69 };
  70
  71 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  72         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  73
  74 /*
  75  * all known request control OIDs should be added to this list
  76  */
  77 /*
  78  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  79  * addresses an undefined control; this allows to safely test for
  80  * well known controls even if they are not registered, e.g. if
  81  * they get moved to modules.  An example is sc_LDAPsync, which
  82  * is implemented in the syncprov overlay and thus, if configured
  83  * as dynamic module, may not be registered.  One side effect is that
  84  * slap_known_controls[0] == NULL, so it should always be used
  85  * starting from 1.
  86  * FIXME: should we define the "undefined control" oid?
  87  */
  88 char *slap_known_controls[SLAP_MAX_CIDS+1];
  89 static int num_known_controls = 1;
  90
  91 static char *proxy_authz_extops[] = {
  92         LDAP_EXOP_MODIFY_PASSWD,
  93         LDAP_EXOP_X_WHO_AM_I,
  94         NULL
  95 };
  96
  97 static struct slap_control control_defs[] = {
  98         {  LDAP_CONTROL_ASSERT,
  99                 (int)offsetof(struct slap_control_ids, sc_assert),
 100                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 101                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 102         { LDAP_CONTROL_PRE_READ,
 103                 (int)offsetof(struct slap_control_ids, sc_preRead),
 104                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 105                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 106         { LDAP_CONTROL_POST_READ,
 107                 (int)offsetof(struct slap_control_ids, sc_postRead),
 108                 SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 109                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 110         { LDAP_CONTROL_VALUESRETURNFILTER,
 111                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 112                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 113                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 114         { LDAP_CONTROL_PAGEDRESULTS,
 115                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 116                 SLAP_CTRL_SEARCH, NULL,
 117                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 118 #ifdef LDAP_DEVEL
 119         { LDAP_CONTROL_SORTREQUEST,
 120                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 121                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 122                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 123 #endif
 124 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 125         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 126                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 127                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 128                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 129 #endif
 130 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 131         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 132                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 133                 SLAP_CTRL_MODIFY, NULL,
 134                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 135 #endif
 136 #ifdef SLAP_CONTROL_X_TREE_DELETE
 137         { LDAP_CONTROL_X_TREE_DELETE,
 138                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 139                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE, NULL,
 140                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 141 #endif
 142 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
 143         { LDAP_CONTORL_X_SEARCH_OPTIONS,
 144                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 145                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 146                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 147 #endif
 148 #ifdef LDAP_CONTROL_SUBENTRIES
 149         { LDAP_CONTROL_SUBENTRIES,
 150                 (int)offsetof(struct slap_control_ids, sc_subentries),
 151                 SLAP_CTRL_SEARCH, NULL,
 152                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 153 #endif
 154         { LDAP_CONTROL_NOOP,
 155                 (int)offsetof(struct slap_control_ids, sc_noOp),
 156                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 157                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 158 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 159         { LDAP_CONTROL_MODIFY_INCREMENT,
 160                 (int)offsetof(struct slap_control_ids, sc_modifyIncrement),
 161                 SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
 162                 parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 163 #endif
 164         { LDAP_CONTROL_MANAGEDSAIT,
 165                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 166                 SLAP_CTRL_ACCESS, NULL,
 167                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 168         { LDAP_CONTROL_PROXY_AUTHZ,
 169                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 170                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
 171                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 172         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 173 };
 174
 175 /*
 176  * Register a supported control.
 177  *
 178  * This can be called by an OpenLDAP plugin or, indirectly, by a
 179  * SLAPI plugin calling slapi_register_supported_control().
 180  */
 181 int
 182 register_supported_control(const char *controloid,
 183         slap_mask_t controlmask,
 184         char **controlexops,
 185         SLAP_CTRL_PARSE_FN *controlparsefn,
 186         int *controlcid)
 187 {
 188         struct slap_control *sc;
 189         int i;
 190
 191         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 192                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 193                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 194                 SLAP_MAX_CIDS, 0, 0 );
 195                 return LDAP_OTHER;
 196         }
 197
 198         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 199
 200         /* sanity check - should never happen */
 201         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 202                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 203                         Debug( LDAP_DEBUG_ANY,
 204                                 "Control %s already registered.\n",
 205                                 controloid, 0, 0 );
 206                         return LDAP_PARAM_ERROR;
 207                 }
 208         }
 209
 210         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 211         if ( sc == NULL ) return LDAP_NO_MEMORY;
 212
 213         sc->sc_oid = ch_strdup( controloid );
 214         sc->sc_mask = controlmask;
 215         if ( controlexops != NULL ) {
 216                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 217                 if ( sc->sc_extendedops == NULL ) {
 218                         ch_free( sc );
 219                         return LDAP_NO_MEMORY;
 220                 }
 221         } else {
 222                 sc->sc_extendedops = NULL;
 223         }
 224         sc->sc_parse = controlparsefn;
 225
 226         if ( controlcid ) *controlcid = num_known_controls;
 227         sc->sc_cid = num_known_controls;
 228
 229         /* Update slap_known_controls, too. */
 230         slap_known_controls[num_known_controls-1] = sc->sc_oid;
 231         slap_known_controls[num_known_controls++] = NULL;
 232
 233         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 234         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 235         return LDAP_SUCCESS;
 236 }
 237
 238 /*
 239  * One-time initialization of internal controls.
 240  */
 241 int
 242 slap_controls_init( void )
 243 {
 244         int i, rc;
 245         struct slap_control *sc;
 246
 247         rc = LDAP_SUCCESS;
 248
 249         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 250                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 251                 rc = register_supported_control( control_defs[i].sc_oid,
 252                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 253                         control_defs[i].sc_parse, cid );
 254                 if ( rc != LDAP_SUCCESS ) break;
 255         }
 256
 257         return rc;
 258 }
 259
 260 /*
 261  * Free memory associated with list of supported controls.
 262  */
 263 void
 264 controls_destroy( void )
 265 {
 266         struct slap_control *sc;
 267
 268         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 269                 sc = LDAP_SLIST_FIRST(&controls_list);
 270                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 271
 272                 ch_free( sc->sc_oid );
 273                 if ( sc->sc_extendedops != NULL ) {
 274                         ldap_charray_free( sc->sc_extendedops );
 275                 }
 276                 ch_free( sc );
 277         }
 278 }
 279
 280 /*
 281  * Format the supportedControl attribute of the root DSE,
 282  * detailing which controls are supported by the directory
 283  * server.
 284  */
 285 int
 286 controls_root_dse_info( Entry *e )
 287 {
 288         AttributeDescription *ad_supportedControl
 289                 = slap_schema.si_ad_supportedControl;
 290         struct berval vals[2];
 291         struct slap_control *sc;
 292
 293         vals[1].bv_val = NULL;
 294         vals[1].bv_len = 0;
 295
 296         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 297                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 298
 299                 vals[0].bv_val = sc->sc_oid;
 300                 vals[0].bv_len = strlen( sc->sc_oid );
 301
 302                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 303                         return -1;
 304                 }
 305         }
 306
 307         return 0;
 308 }
 309
 310 /*
 311  * Return a list of OIDs and operation masks for supported
 312  * controls. Used by SLAPI.
 313  */
 314 int
 315 get_supported_controls(char ***ctrloidsp,
 316         slap_mask_t **ctrlmasks)
 317 {
 318         int i, n;
 319         char **oids;
 320         slap_mask_t *masks;
 321         int rc;
 322         struct slap_control *sc;
 323
 324         n = 0;
 325
 326         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 327                 n++;
 328         }
 329
 330         if ( n == 0 ) {
 331                 *ctrloidsp = NULL;
 332                 *ctrlmasks = NULL;
 333                 return LDAP_SUCCESS;
 334         }
 335
 336         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 337         if ( oids == NULL ) {
 338                 return LDAP_NO_MEMORY;
 339         }
 340         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 341         if  ( masks == NULL ) {
 342                 ch_free( oids );
 343                 return LDAP_NO_MEMORY;
 344         }
 345
 346         n = 0;
 347
 348         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 349                 oids[n] = ch_strdup( sc->sc_oid );
 350                 masks[n] = sc->sc_mask;
 351                 n++;
 352         }
 353         oids[n] = NULL;
 354         masks[n] = 0;
 355
 356         *ctrloidsp = oids;
 357         *ctrlmasks = masks;
 358
 359         return LDAP_SUCCESS;
 360 }
 361
 362 /*
 363  * Find a control given its OID.
 364  */
 365 static struct slap_control *
 366 find_ctrl( const char *oid )
 367 {
 368         struct slap_control *sc;
 369
 370         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 371                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 372                         return sc;
 373                 }
 374         }
 375
 376         return NULL;
 377 }
 378
 379 int
 380 slap_find_control_id(
 381         const char *oid,
 382         int *cid )
 383 {
 384         struct slap_control *ctrl = find_ctrl( oid );
 385         if ( ctrl ) {
 386                 if ( cid ) *cid = ctrl->sc_cid;
 387                 return LDAP_SUCCESS;
 388         }
 389         return LDAP_CONTROL_NOT_FOUND;
 390 }
 391
 392 int
 393 slap_global_control( Operation *op, const char *oid, int *cid )
 394 {
 395         struct slap_control *ctrl = find_ctrl( oid );
 396
 397         if ( ctrl == NULL ) {
 398                 /* should not be reachable */
 399                 Debug( LDAP_DEBUG_ANY,
 400                         "slap_global_control: unrecognized control: %s\n",
 401                         oid, 0, 0 );
 402                 return LDAP_CONTROL_NOT_FOUND;
 403         }
 404
 405         if ( cid ) *cid = ctrl->sc_cid;
 406
 407         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 408                         ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 409                         ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 410         {
 411                 return LDAP_COMPARE_TRUE;
 412         }
 413
 414         Debug( LDAP_DEBUG_TRACE,
 415                 "slap_global_control: unavailable control: %s\n",
 416                 oid, 0, 0 );
 417
 418         return LDAP_COMPARE_FALSE;
 419 }
 420
 421 void slap_free_ctrls(
 422         Operation *op,
 423         LDAPControl **ctrls )
 424 {
 425         int i;
 426
 427         for (i=0; ctrls[i]; i++) {
 428                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 429         }
 430         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 431 }
 432
 433 int get_ctrls(
 434         Operation *op,
 435         SlapReply *rs,
 436         int sendres )
 437 {
 438         int nctrls = 0;
 439         ber_tag_t tag;
 440         ber_len_t len;
 441         char *opaque;
 442         BerElement *ber = op->o_ber;
 443         struct slap_control *sc;
 444         struct berval bv;
 445
 446         len = ber_pvt_ber_remaining(ber);
 447
 448         if( len == 0) {
 449                 /* no controls */
 450                 rs->sr_err = LDAP_SUCCESS;
 451                 return rs->sr_err;
 452         }
 453
 454         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 455                 if( tag == LBER_ERROR ) {
 456                         rs->sr_err = SLAPD_DISCONNECT;
 457                         rs->sr_text = "unexpected data in PDU";
 458                 }
 459
 460                 goto return_results;
 461         }
 462
 463         Debug( LDAP_DEBUG_TRACE,
 464                 "=> get_ctrls\n", 0, 0, 0 );
 465
 466         if( op->o_protocol < LDAP_VERSION3 ) {
 467                 rs->sr_err = SLAPD_DISCONNECT;
 468                 rs->sr_text = "controls require LDAPv3";
 469                 goto return_results;
 470         }
 471
 472         /* one for first control, one for termination */
 473         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 474
 475 #if 0
 476         if( op->ctrls == NULL ) {
 477                 rs->sr_err = LDAP_NO_MEMORY;
 478                 rs->sr_text = "no memory";
 479                 goto return_results;
 480         }
 481 #endif
 482
 483         op->o_ctrls[nctrls] = NULL;
 484
 485         /* step through each element */
 486         for( tag = ber_first_element( ber, &len, &opaque );
 487                 tag != LBER_ERROR;
 488                 tag = ber_next_element( ber, &len, opaque ) )
 489         {
 490                 LDAPControl *c;
 491                 LDAPControl **tctrls;
 492
 493                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 494                 memset(c, 0, sizeof(LDAPControl));
 495
 496                 /* allocate pointer space for current controls (nctrls)
 497                  * + this control + extra NULL
 498                  */
 499                 tctrls = op->o_tmprealloc( op->o_ctrls,
 500                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 501
 502 #if 0
 503                 if( tctrls == NULL ) {
 504                         ch_free( c );
 505                         ldap_controls_free(op->o_ctrls);
 506                         op->o_ctrls = NULL;
 507
 508                         rs->sr_err = LDAP_NO_MEMORY;
 509                         rs->sr_text = "no memory";
 510                         goto return_results;
 511                 }
 512 #endif
 513                 op->o_ctrls = tctrls;
 514
 515                 op->o_ctrls[nctrls++] = c;
 516                 op->o_ctrls[nctrls] = NULL;
 517
 518                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 519                 c->ldctl_oid = bv.bv_val;
 520
 521                 if( tag == LBER_ERROR ) {
 522                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 523                                 0, 0, 0 );
 524
 525                         slap_free_ctrls( op, op->o_ctrls );
 526                         op->o_ctrls = NULL;
 527                         rs->sr_err = SLAPD_DISCONNECT;
 528                         rs->sr_text = "decoding controls error";
 529                         goto return_results;
 530
 531                 } else if( c->ldctl_oid == NULL ) {
 532                         Debug( LDAP_DEBUG_TRACE,
 533                                 "get_ctrls: conn %lu got emtpy OID.\n",
 534                                 op->o_connid, 0, 0 );
 535
 536                         slap_free_ctrls( op, op->o_ctrls );
 537                         op->o_ctrls = NULL;
 538                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 539                         rs->sr_text = "OID field is empty";
 540                         goto return_results;
 541                 }
 542
 543                 tag = ber_peek_tag( ber, &len );
 544
 545                 if( tag == LBER_BOOLEAN ) {
 546                         ber_int_t crit;
 547                         tag = ber_scanf( ber, "b", &crit );
 548
 549                         if( tag == LBER_ERROR ) {
 550                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 551                                         0, 0, 0 );
 552                                 slap_free_ctrls( op, op->o_ctrls );
 553                                 op->o_ctrls = NULL;
 554                                 rs->sr_err = SLAPD_DISCONNECT;
 555                                 rs->sr_text = "decoding controls error";
 556                                 goto return_results;
 557                         }
 558
 559                         c->ldctl_iscritical = (crit != 0);
 560                         tag = ber_peek_tag( ber, &len );
 561                 }
 562
 563                 if( tag == LBER_OCTETSTRING ) {
 564                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 565
 566                         if( tag == LBER_ERROR ) {
 567                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 568                                         "%s (%scritical): get value failed.\n",
 569                                         op->o_connid, c->ldctl_oid,
 570                                         c->ldctl_iscritical ? "" : "non" );
 571                                 slap_free_ctrls( op, op->o_ctrls );
 572                                 op->o_ctrls = NULL;
 573                                 rs->sr_err = SLAPD_DISCONNECT;
 574                                 rs->sr_text = "decoding controls error";
 575                                 goto return_results;
 576                         }
 577                 }
 578
 579                 Debug( LDAP_DEBUG_TRACE,
 580                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 581                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 582
 583                 sc = find_ctrl( c->ldctl_oid );
 584                 if( sc != NULL ) {
 585                         /* recognized control */
 586                         slap_mask_t tagmask;
 587                         switch( op->o_tag ) {
 588                         case LDAP_REQ_ADD:
 589                                 tagmask = SLAP_CTRL_ADD;
 590                                 break;
 591                         case LDAP_REQ_BIND:
 592                                 tagmask = SLAP_CTRL_BIND;
 593                                 break;
 594                         case LDAP_REQ_COMPARE:
 595                                 tagmask = SLAP_CTRL_COMPARE;
 596                                 break;
 597                         case LDAP_REQ_DELETE:
 598                                 tagmask = SLAP_CTRL_DELETE;
 599                                 break;
 600                         case LDAP_REQ_MODIFY:
 601                                 tagmask = SLAP_CTRL_MODIFY;
 602                                 break;
 603                         case LDAP_REQ_RENAME:
 604                                 tagmask = SLAP_CTRL_RENAME;
 605                                 break;
 606                         case LDAP_REQ_SEARCH:
 607                                 tagmask = SLAP_CTRL_SEARCH;
 608                                 break;
 609                         case LDAP_REQ_UNBIND:
 610                                 tagmask = SLAP_CTRL_UNBIND;
 611                                 break;
 612                         case LDAP_REQ_ABANDON:
 613                                 tagmask = SLAP_CTRL_ABANDON;
 614                                 break;
 615                         case LDAP_REQ_EXTENDED:
 616                                 tagmask=~0L;
 617                                 assert( op->ore_reqoid.bv_val != NULL );
 618                                 if( sc->sc_extendedops != NULL ) {
 619                                         int i;
 620                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 621                                                 if( strcmp( op->ore_reqoid.bv_val,
 622                                                         sc->sc_extendedops[i] ) == 0 )
 623                                                 {
 624                                                         tagmask=0L;
 625                                                         break;
 626                                                 }
 627                                         }
 628                                 }
 629                                 break;
 630                         default:
 631                                 rs->sr_err = LDAP_OTHER;
 632                                 rs->sr_text = "controls internal error";
 633                                 goto return_results;
 634                         }
 635
 636                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 637                                 /* available extension */
 638                                 int     rc;
 639
 640                                 if( !sc->sc_parse ) {
 641                                         rs->sr_err = LDAP_OTHER;
 642                                         rs->sr_text = "not yet implemented";
 643                                         goto return_results;
 644                                 }
 645
 646                                 rc = sc->sc_parse( op, rs, c );
 647                                 if ( rc ) {
 648                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 649                                         rs->sr_err = rc;
 650                                         goto return_results;
 651                                 }
 652
 653                         } else if( c->ldctl_iscritical ) {
 654                                 /* unavailable CRITICAL control */
 655                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 656                                 rs->sr_text = "critical extension is unavailable";
 657                                 goto return_results;
 658                         }
 659
 660                 } else if( c->ldctl_iscritical ) {
 661                         /* unrecognized CRITICAL control */
 662                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 663                         rs->sr_text = "critical extension is not recognized";
 664                         goto return_results;
 665                 }
 666 next_ctrl:;
 667         }
 668
 669 return_results:
 670         Debug( LDAP_DEBUG_TRACE,
 671                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 672                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 673
 674         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 675                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 676                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 677                         send_ldap_disconnect( op, rs );
 678                         rs->sr_err = SLAPD_DISCONNECT;
 679                 } else {
 680                         send_ldap_result( op, rs );
 681                 }
 682         }
 683
 684         return rs->sr_err;
 685 }
 686
 687 static int parseModifyIncrement (
 688         Operation *op,
 689         SlapReply *rs,
 690         LDAPControl *ctrl )
 691 {
 692 #if 0
 693         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 694                 rs->sr_text = "modifyIncrement control specified multiple times";
 695                 return LDAP_PROTOCOL_ERROR;
 696         }
 697 #endif
 698
 699         if ( ctrl->ldctl_value.bv_len ) {
 700                 rs->sr_text = "modifyIncrement control value not empty";
 701                 return LDAP_PROTOCOL_ERROR;
 702         }
 703
 704 #if 0
 705         op->o_modifyIncrement = ctrl->ldctl_iscritical
 706                 ? SLAP_CONTROL_CRITICAL
 707                 : SLAP_CONTROL_NONCRITICAL;
 708 #endif
 709
 710         return LDAP_SUCCESS;
 711 }
 712
 713 static int parseManageDSAit (
 714         Operation *op,
 715         SlapReply *rs,
 716         LDAPControl *ctrl )
 717 {
 718         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 719                 rs->sr_text = "manageDSAit control specified multiple times";
 720                 return LDAP_PROTOCOL_ERROR;
 721         }
 722
 723         if ( ctrl->ldctl_value.bv_len ) {
 724                 rs->sr_text = "manageDSAit control value not empty";
 725                 return LDAP_PROTOCOL_ERROR;
 726         }
 727
 728         op->o_managedsait = ctrl->ldctl_iscritical
 729                 ? SLAP_CONTROL_CRITICAL
 730                 : SLAP_CONTROL_NONCRITICAL;
 731
 732         return LDAP_SUCCESS;
 733 }
 734
 735 static int parseProxyAuthz (
 736         Operation *op,
 737         SlapReply *rs,
 738         LDAPControl *ctrl )
 739 {
 740         int             rc;
 741         struct berval   dn = BER_BVNULL;
 742
 743         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 744                 rs->sr_text = "proxy authorization control specified multiple times";
 745                 return LDAP_PROTOCOL_ERROR;
 746         }
 747
 748         op->o_proxy_authz = ctrl->ldctl_iscritical
 749                 ? SLAP_CONTROL_CRITICAL
 750                 : SLAP_CONTROL_NONCRITICAL;
 751
 752         Debug( LDAP_DEBUG_ARGS,
 753                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 754                 op->o_connid,
 755                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 756                 0 );
 757
 758         if( ctrl->ldctl_value.bv_len == 0 ) {
 759                 Debug( LDAP_DEBUG_TRACE,
 760                         "parseProxyAuthz: conn=%lu anonymous\n",
 761                         op->o_connid, 0, 0 );
 762
 763                 /* anonymous */
 764                 free( op->o_dn.bv_val );
 765                 op->o_dn.bv_len = 0;
 766                 op->o_dn.bv_val = ch_strdup( "" );
 767
 768                 free( op->o_ndn.bv_val );
 769                 op->o_ndn.bv_len = 0;
 770                 op->o_ndn.bv_val = ch_strdup( "" );
 771
 772                 return LDAP_SUCCESS;
 773         }
 774
 775         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 776                         NULL, &dn, SLAP_GETDN_AUTHZID );
 777
 778         /* FIXME: empty DN in proxyAuthz control should be legal... */
 779         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 780                 if ( dn.bv_val ) {
 781                         ch_free( dn.bv_val );
 782                 }
 783                 rs->sr_text = "authzId mapping failed";
 784                 return LDAP_PROXY_AUTHZ_FAILURE;
 785         }
 786
 787         Debug( LDAP_DEBUG_TRACE,
 788                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 789                 op->o_connid,
 790                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 791
 792         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 793
 794         if( rc ) {
 795                 ch_free( dn.bv_val );
 796                 rs->sr_text = "not authorized to assume identity";
 797                 return LDAP_PROXY_AUTHZ_FAILURE;
 798         }
 799
 800         ch_free( op->o_dn.bv_val );
 801         ch_free( op->o_ndn.bv_val );
 802
 803         op->o_dn.bv_val = NULL;
 804         op->o_ndn = dn;
 805
 806         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 807             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 808
 809         /*
 810          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 811          * from now on op->o_dn is normalized
 812          */
 813         ber_dupbv( &op->o_dn, &dn );
 814
 815         return LDAP_SUCCESS;
 816 }
 817
 818 static int parseNoOp (
 819         Operation *op,
 820         SlapReply *rs,
 821         LDAPControl *ctrl )
 822 {
 823         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 824                 rs->sr_text = "noop control specified multiple times";
 825                 return LDAP_PROTOCOL_ERROR;
 826         }
 827
 828         if ( ctrl->ldctl_value.bv_len ) {
 829                 rs->sr_text = "noop control value not empty";
 830                 return LDAP_PROTOCOL_ERROR;
 831         }
 832
 833         op->o_noop = ctrl->ldctl_iscritical
 834                 ? SLAP_CONTROL_CRITICAL
 835                 : SLAP_CONTROL_NONCRITICAL;
 836
 837         return LDAP_SUCCESS;
 838 }
 839
 840 static int parsePagedResults (
 841         Operation *op,
 842         SlapReply *rs,
 843         LDAPControl *ctrl )
 844 {
 845         int             rc = LDAP_SUCCESS;
 846         ber_tag_t       tag;
 847         ber_int_t       size;
 848         BerElement      *ber;
 849         struct berval   cookie = BER_BVNULL;
 850         PagedResultsState       *ps;
 851
 852         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 853                 rs->sr_text = "paged results control specified multiple times";
 854                 return LDAP_PROTOCOL_ERROR;
 855         }
 856
 857         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 858                 rs->sr_text = "paged results control value is empty (or absent)";
 859                 return LDAP_PROTOCOL_ERROR;
 860         }
 861
 862         /* Parse the control value
 863          *      realSearchControlValue ::= SEQUENCE {
 864          *              size    INTEGER (0..maxInt),
 865          *                              -- requested page size from client
 866          *                              -- result set size estimate from server
 867          *              cookie  OCTET STRING
 868          * }
 869          */
 870         ber = ber_init( &ctrl->ldctl_value );
 871         if ( ber == NULL ) {
 872                 rs->sr_text = "internal error";
 873                 return LDAP_OTHER;
 874         }
 875
 876         tag = ber_scanf( ber, "{im}", &size, &cookie );
 877
 878         if ( tag == LBER_ERROR ) {
 879                 rs->sr_text = "paged results control could not be decoded";
 880                 rc = LDAP_PROTOCOL_ERROR;
 881                 goto done;
 882         }
 883
 884         if ( size < 0 ) {
 885                 rs->sr_text = "paged results control size invalid";
 886                 rc = LDAP_PROTOCOL_ERROR;
 887                 goto done;
 888         }
 889
 890 #if 0
 891         /* defer cookie decoding/checks to backend... */
 892         if ( cookie.bv_len ) {
 893                 PagedResultsCookie reqcookie;
 894                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 895                         /* bad cookie */
 896                         rs->sr_text = "paged results cookie is invalid";
 897                         rc = LDAP_PROTOCOL_ERROR;
 898                         goto done;
 899                 }
 900
 901                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 902
 903                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 904                         /* bad cookie */
 905                         rs->sr_text = "paged results cookie is invalid";
 906                         rc = LDAP_PROTOCOL_ERROR;
 907                         goto done;
 908
 909                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 910                         rs->sr_text = "paged results cookie is invalid or old";
 911                         rc = LDAP_UNWILLING_TO_PERFORM;
 912                         goto done;
 913                 }
 914
 915         } else {
 916                 /* Initial request.  Initialize state. */
 917 #if 0
 918                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 919                         /* There's another pagedResults control on the
 920                          * same connection; reject new pagedResults controls
 921                          * (allowed by RFC2696) */
 922                         rs->sr_text = "paged results cookie unavailable; try later";
 923                         rc = LDAP_UNWILLING_TO_PERFORM;
 924                         goto done;
 925                 }
 926 #endif
 927                 op->o_pagedresults_state.ps_cookie = 0;
 928                 op->o_pagedresults_state.ps_count = 0;
 929         }
 930 #endif
 931
 932         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 933         *ps = op->o_conn->c_pagedresults_state;
 934         ps->ps_size = size;
 935         op->o_pagedresults_state = ps;
 936
 937         /* NOTE: according to RFC 2696 3.:
 938
 939     If the page size is greater than or equal to the sizeLimit value, the
 940     server should ignore the control as the request can be satisfied in a
 941     single page.
 942
 943          * NOTE: this assumes that the op->ors_slimit be set
 944          * before the controls are parsed.
 945          */
 946
 947         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 948                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 949
 950         } else if ( ctrl->ldctl_iscritical ) {
 951                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 952
 953         } else {
 954                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 955         }
 956
 957 done:;
 958         (void)ber_free( ber, 1 );
 959         return rc;
 960 }
 961
 962 #ifdef LDAP_DEVEL
 963 static int parseSortedResults (
 964         Operation *op,
 965         SlapReply *rs,
 966         LDAPControl *ctrl )
 967 {
 968         int             rc = LDAP_SUCCESS;
 969
 970         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
 971                 rs->sr_text = "sorted results control specified multiple times";
 972                 return LDAP_PROTOCOL_ERROR;
 973         }
 974
 975         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 976                 rs->sr_text = "sorted results control value is empty (or absent)";
 977                 return LDAP_PROTOCOL_ERROR;
 978         }
 979
 980         /* blow off parsing the value */
 981
 982         op->o_sortedresults = ctrl->ldctl_iscritical
 983                 ? SLAP_CONTROL_CRITICAL
 984                 : SLAP_CONTROL_NONCRITICAL;
 985
 986         return rc;
 987 }
 988 #endif
 989
 990 static int parseAssert (
 991         Operation *op,
 992         SlapReply *rs,
 993         LDAPControl *ctrl )
 994 {
 995         BerElement      *ber;
 996         struct berval   fstr = BER_BVNULL;
 997         const char *err_msg = "";
 998
 999         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1000                 rs->sr_text = "assert control specified multiple times";
1001                 return LDAP_PROTOCOL_ERROR;
1002         }
1003
1004         if ( ctrl->ldctl_value.bv_len == 0 ) {
1005                 rs->sr_text = "assert control value is empty (or absent)";
1006                 return LDAP_PROTOCOL_ERROR;
1007         }
1008
1009         ber = ber_init( &(ctrl->ldctl_value) );
1010         if (ber == NULL) {
1011                 rs->sr_text = "assert control: internal error";
1012                 return LDAP_OTHER;
1013         }
1014
1015         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
1016
1017         if( rs->sr_err != LDAP_SUCCESS ) {
1018                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1019                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1020                         send_ldap_disconnect( op, rs );
1021                         rs->sr_err = SLAPD_DISCONNECT;
1022                 } else {
1023                         send_ldap_result( op, rs );
1024                 }
1025                 if( op->o_assertion != NULL ) {
1026                         filter_free_x( op, op->o_assertion );
1027                 }
1028                 return rs->sr_err;
1029         }
1030
1031 #ifdef LDAP_DEBUG
1032         filter2bv_x( op, op->o_assertion, &fstr );
1033
1034         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1035                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1036         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1037 #endif
1038
1039         op->o_assert = ctrl->ldctl_iscritical
1040                 ? SLAP_CONTROL_CRITICAL
1041                 : SLAP_CONTROL_NONCRITICAL;
1042
1043         rs->sr_err = LDAP_SUCCESS;
1044         return LDAP_SUCCESS;
1045 }
1046
1047 static int parsePreRead (
1048         Operation *op,
1049         SlapReply *rs,
1050         LDAPControl *ctrl )
1051 {
1052         ber_len_t siz, off, i;
1053         AttributeName *an = NULL;
1054         BerElement      *ber;
1055
1056         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1057                 rs->sr_text = "preread control specified multiple times";
1058                 return LDAP_PROTOCOL_ERROR;
1059         }
1060
1061         if ( ctrl->ldctl_value.bv_len == 0 ) {
1062                 rs->sr_text = "preread control value is empty (or absent)";
1063                 return LDAP_PROTOCOL_ERROR;
1064         }
1065
1066         ber = ber_init( &(ctrl->ldctl_value) );
1067         if (ber == NULL) {
1068                 rs->sr_text = "preread control: internal error";
1069                 return LDAP_OTHER;
1070         }
1071
1072         siz = sizeof( AttributeName );
1073         off = offsetof( AttributeName, an_name );
1074         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1075                 rs->sr_text = "preread control: decoding error";
1076                 return LDAP_PROTOCOL_ERROR;
1077         }
1078
1079         for( i=0; i<siz; i++ ) {
1080                 int             rc = LDAP_SUCCESS;
1081                 const char      *dummy = NULL;
1082
1083                 an[i].an_desc = NULL;
1084                 an[i].an_oc = NULL;
1085                 an[i].an_oc_exclude = 0;
1086                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1087                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1088                         rs->sr_text = dummy
1089                                 ? dummy
1090                                 : "postread control: unknown attributeType";
1091                         return rc;
1092                 }
1093         }
1094
1095         op->o_preread = ctrl->ldctl_iscritical
1096                 ? SLAP_CONTROL_CRITICAL
1097                 : SLAP_CONTROL_NONCRITICAL;
1098
1099         op->o_preread_attrs = an;
1100
1101         rs->sr_err = LDAP_SUCCESS;
1102         return LDAP_SUCCESS;
1103 }
1104
1105 static int parsePostRead (
1106         Operation *op,
1107         SlapReply *rs,
1108         LDAPControl *ctrl )
1109 {
1110         ber_len_t siz, off, i;
1111         AttributeName *an = NULL;
1112         BerElement      *ber;
1113
1114         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1115                 rs->sr_text = "postread control specified multiple times";
1116                 return LDAP_PROTOCOL_ERROR;
1117         }
1118
1119         if ( ctrl->ldctl_value.bv_len == 0 ) {
1120                 rs->sr_text = "postread control value is empty (or absent)";
1121                 return LDAP_PROTOCOL_ERROR;
1122         }
1123
1124         ber = ber_init( &(ctrl->ldctl_value) );
1125         if (ber == NULL) {
1126                 rs->sr_text = "postread control: internal error";
1127                 return LDAP_OTHER;
1128         }
1129
1130         siz = sizeof( AttributeName );
1131         off = offsetof( AttributeName, an_name );
1132         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1133                 rs->sr_text = "postread control: decoding error";
1134                 return LDAP_PROTOCOL_ERROR;
1135         }
1136
1137         for( i=0; i<siz; i++ ) {
1138                 int             rc = LDAP_SUCCESS;
1139                 const char      *dummy = NULL;
1140
1141                 an[i].an_desc = NULL;
1142                 an[i].an_oc = NULL;
1143                 an[i].an_oc_exclude = 0;
1144                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1145                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1146                         rs->sr_text = dummy
1147                                 ? dummy
1148                                 : "postread control: unknown attributeType";
1149                         return rc;
1150                 }
1151         }
1152
1153         op->o_postread = ctrl->ldctl_iscritical
1154                 ? SLAP_CONTROL_CRITICAL
1155                 : SLAP_CONTROL_NONCRITICAL;
1156
1157         op->o_postread_attrs = an;
1158
1159         rs->sr_err = LDAP_SUCCESS;
1160         return LDAP_SUCCESS;
1161 }
1162
1163 int parseValuesReturnFilter (
1164         Operation *op,
1165         SlapReply *rs,
1166         LDAPControl *ctrl )
1167 {
1168         BerElement      *ber;
1169         struct berval   fstr = BER_BVNULL;
1170         const char *err_msg = "";
1171
1172         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1173                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1174                 return LDAP_PROTOCOL_ERROR;
1175         }
1176
1177         if ( ctrl->ldctl_value.bv_len == 0 ) {
1178                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1179                 return LDAP_PROTOCOL_ERROR;
1180         }
1181
1182         ber = ber_init( &(ctrl->ldctl_value) );
1183         if (ber == NULL) {
1184                 rs->sr_text = "internal error";
1185                 return LDAP_OTHER;
1186         }
1187
1188         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1189
1190         if( rs->sr_err != LDAP_SUCCESS ) {
1191                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1192                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1193                         send_ldap_disconnect( op, rs );
1194                         rs->sr_err = SLAPD_DISCONNECT;
1195                 } else {
1196                         send_ldap_result( op, rs );
1197                 }
1198                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1199         }
1200 #ifdef LDAP_DEBUG
1201         else {
1202                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1203         }
1204
1205         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1206                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1207         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1208 #endif
1209
1210         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1211                 ? SLAP_CONTROL_CRITICAL
1212                 : SLAP_CONTROL_NONCRITICAL;
1213
1214         rs->sr_err = LDAP_SUCCESS;
1215         return LDAP_SUCCESS;
1216 }
1217
1218 #ifdef LDAP_CONTROL_SUBENTRIES
1219 static int parseSubentries (
1220         Operation *op,
1221         SlapReply *rs,
1222         LDAPControl *ctrl )
1223 {
1224         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1225                 rs->sr_text = "subentries control specified multiple times";
1226                 return LDAP_PROTOCOL_ERROR;
1227         }
1228
1229         /* FIXME: should use BER library */
1230         if( ( ctrl->ldctl_value.bv_len != 3 )
1231                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1232                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1233         {
1234                 rs->sr_text = "subentries control value encoding is bogus";
1235                 return LDAP_PROTOCOL_ERROR;
1236         }
1237
1238         op->o_subentries = ctrl->ldctl_iscritical
1239                 ? SLAP_CONTROL_CRITICAL
1240                 : SLAP_CONTROL_NONCRITICAL;
1241
1242         if ( (void *)(ctrl->ldctl_value.bv_val[2] != 0x00)) {
1243                 set_subentries_visibility( op );
1244         }
1245
1246         return LDAP_SUCCESS;
1247 }
1248 #endif
1249
1250 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1251 static int parsePermissiveModify (
1252         Operation *op,
1253         SlapReply *rs,
1254         LDAPControl *ctrl )
1255 {
1256         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1257                 rs->sr_text = "permissiveModify control specified multiple times";
1258                 return LDAP_PROTOCOL_ERROR;
1259         }
1260
1261         if ( ctrl->ldctl_value.bv_len ) {
1262                 rs->sr_text = "permissiveModify control value not empty";
1263                 return LDAP_PROTOCOL_ERROR;
1264         }
1265
1266         op->o_permissive_modify = ctrl->ldctl_iscritical
1267                 ? SLAP_CONTROL_CRITICAL
1268                 : SLAP_CONTROL_NONCRITICAL;
1269
1270         return LDAP_SUCCESS;
1271 }
1272 #endif
1273
1274 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1275 static int parseDomainScope (
1276         Operation *op,
1277         SlapReply *rs,
1278         LDAPControl *ctrl )
1279 {
1280         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1281                 rs->sr_text = "domainScope control specified multiple times";
1282                 return LDAP_PROTOCOL_ERROR;
1283         }
1284
1285         if ( ctrl->ldctl_value.bv_len ) {
1286                 rs->sr_text = "domainScope control value not empty";
1287                 return LDAP_PROTOCOL_ERROR;
1288         }
1289
1290         op->o_domain_scope = ctrl->ldctl_iscritical
1291                 ? SLAP_CONTROL_CRITICAL
1292                 : SLAP_CONTROL_NONCRITICAL;
1293
1294         return LDAP_SUCCESS;
1295 }
1296 #endif
1297
1298 #ifdef LDAP_CONTROL_X_TREE_DELETE
1299 static int parseTreeDelete (
1300         Operation *op,
1301         SlapReply *rs,
1302         LDAPControl *ctrl )
1303 {
1304         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1305                 rs->sr_text = "treeDelete control specified multiple times";
1306                 return LDAP_PROTOCOL_ERROR;
1307         }
1308
1309         if ( ctrl->ldctl_value.bv_len ) {
1310                 rs->sr_text = "treeDelete control value not empty";
1311                 return LDAP_PROTOCOL_ERROR;
1312         }
1313
1314         op->o_tree_delete = ctrl->ldctl_iscritical
1315                 ? SLAP_CONTROL_CRITICAL
1316                 : SLAP_CONTROL_NONCRITICAL;
1317
1318         return LDAP_SUCCESS;
1319 }
1320 #endif
1321
1322 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1323 static int parseSearchOptions (
1324         Operation *op,
1325         SlapReply *rs,
1326         LDAPControl *ctrl )
1327 {
1328         BerElement *ber;
1329         ber_int_t search_flags;
1330
1331         if ( ctrl->ldctl_value.bv_len == 0 ) {
1332                 rs->sr_text = "searchOptions control value not empty";
1333                 return LDAP_PROTOCOL_ERROR;
1334         }
1335
1336         ber = ber_init( &ctrl->ldctl_value );
1337         if( ber == NULL ) {
1338                 rs->sr_text = "internal error";
1339                 return LDAP_OTHER;
1340         }
1341
1342         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1343                 rs->sr_text = "searchOptions control decoding error";
1344                 return LDAP_PROTOCOL_ERROR;
1345         }
1346
1347         (void) ber_free( ber, 1 );
1348
1349         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1350                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1351                         rs->sr_text = "searchOptions control specified multiple times "
1352                                 "or with domainScope control";
1353                         return LDAP_PROTOCOL_ERROR;
1354                 }
1355
1356                 op->o_domain_scope = ctrl->ldctl_iscritical
1357                         ? SLAP_CONTROL_CRITICAL
1358                         : SLAP_CONTROL_NONCRITICAL;
1359         }
1360
1361         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1362                 /* Other search flags not recognised so far,
1363                  * including:
1364                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1365                  */
1366                 rs->sr_text = "searchOptions contained unrecongized flag";
1367                 return LDAP_UNWILLING_TO_PERFORM;
1368         }
1369
1370         return LDAP_SUCCESS;
1371 }
1372 #endif
1373