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