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 1998-2004 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                 } else {
 527                         c->ldctl_iscritical = 0;
 528                 }
 529
 530                 if( tag == LBER_OCTETSTRING ) {
 531                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 532
 533                         if( tag == LBER_ERROR ) {
 534                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 535                                         "%s (%scritical): get value failed.\n",
 536                                         op->o_connid, c->ldctl_oid,
 537                                         c->ldctl_iscritical ? "" : "non" );
 538                                 slap_free_ctrls( op, op->o_ctrls );
 539                                 op->o_ctrls = NULL;
 540                                 rs->sr_err = SLAPD_DISCONNECT;
 541                                 rs->sr_text = "decoding controls error";
 542                                 goto return_results;
 543                         }
 544                 } else {
 545                         BER_BVZERO( &c->ldctl_value );
 546                 }
 547
 548                 Debug( LDAP_DEBUG_TRACE,
 549                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 550                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 551
 552                 sc = find_ctrl( c->ldctl_oid );
 553                 if( sc != NULL ) {
 554                         /* recognized control */
 555                         slap_mask_t tagmask;
 556                         switch( op->o_tag ) {
 557                         case LDAP_REQ_ADD:
 558                                 tagmask = SLAP_CTRL_ADD;
 559                                 break;
 560                         case LDAP_REQ_BIND:
 561                                 tagmask = SLAP_CTRL_BIND;
 562                                 break;
 563                         case LDAP_REQ_COMPARE:
 564                                 tagmask = SLAP_CTRL_COMPARE;
 565                                 break;
 566                         case LDAP_REQ_DELETE:
 567                                 tagmask = SLAP_CTRL_DELETE;
 568                                 break;
 569                         case LDAP_REQ_MODIFY:
 570                                 tagmask = SLAP_CTRL_MODIFY;
 571                                 break;
 572                         case LDAP_REQ_RENAME:
 573                                 tagmask = SLAP_CTRL_RENAME;
 574                                 break;
 575                         case LDAP_REQ_SEARCH:
 576                                 tagmask = SLAP_CTRL_SEARCH;
 577                                 break;
 578                         case LDAP_REQ_UNBIND:
 579                                 tagmask = SLAP_CTRL_UNBIND;
 580                                 break;
 581                         case LDAP_REQ_ABANDON:
 582                                 tagmask = SLAP_CTRL_ABANDON;
 583                                 break;
 584                         case LDAP_REQ_EXTENDED:
 585                                 tagmask=~0L;
 586                                 assert( op->ore_reqoid.bv_val != NULL );
 587                                 if( sc->sc_extendedops != NULL ) {
 588                                         int i;
 589                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 590                                                 if( strcmp( op->ore_reqoid.bv_val,
 591                                                         sc->sc_extendedops[i] ) == 0 )
 592                                                 {
 593                                                         tagmask=0L;
 594                                                         break;
 595                                                 }
 596                                         }
 597                                 }
 598                                 break;
 599                         default:
 600                                 rs->sr_err = LDAP_OTHER;
 601                                 rs->sr_text = "controls internal error";
 602                                 goto return_results;
 603                         }
 604
 605                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 606                                 /* available extension */
 607                                 int     rc;
 608
 609                                 if( !sc->sc_parse ) {
 610                                         rs->sr_err = LDAP_OTHER;
 611                                         rs->sr_text = "not yet implemented";
 612                                         goto return_results;
 613                                 }
 614
 615                                 rc = sc->sc_parse( op, rs, c );
 616                                 if ( rc ) {
 617                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 618                                         rs->sr_err = rc;
 619                                         goto return_results;
 620                                 }
 621
 622                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 623                                         /* kludge to disable backend_control() check */
 624                                         c->ldctl_iscritical = 0;
 625
 626                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 627                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 628                                 {
 629                                         /* kludge to disable backend_control() check */
 630                                         c->ldctl_iscritical = 0;
 631                                 }
 632
 633                         } else if( c->ldctl_iscritical ) {
 634                                 /* unavailable CRITICAL control */
 635                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 636                                 rs->sr_text = "critical extension is unavailable";
 637                                 goto return_results;
 638                         }
 639
 640                 } else if( c->ldctl_iscritical ) {
 641                         /* unrecognized CRITICAL control */
 642                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 643                         rs->sr_text = "critical extension is not recognized";
 644                         goto return_results;
 645                 }
 646 next_ctrl:;
 647         }
 648
 649 return_results:
 650         Debug( LDAP_DEBUG_TRACE,
 651                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 652                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 653
 654         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 655                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 656                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 657                         send_ldap_disconnect( op, rs );
 658                         rs->sr_err = SLAPD_DISCONNECT;
 659                 } else {
 660                         send_ldap_result( op, rs );
 661                 }
 662         }
 663
 664         return rs->sr_err;
 665 }
 666
 667 static int parseModifyIncrement (
 668         Operation *op,
 669         SlapReply *rs,
 670         LDAPControl *ctrl )
 671 {
 672 #if 0
 673         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 674                 rs->sr_text = "modifyIncrement control specified multiple times";
 675                 return LDAP_PROTOCOL_ERROR;
 676         }
 677 #endif
 678
 679         if ( ctrl->ldctl_value.bv_len ) {
 680                 rs->sr_text = "modifyIncrement control value not empty";
 681                 return LDAP_PROTOCOL_ERROR;
 682         }
 683
 684 #if 0
 685         op->o_modifyIncrement = ctrl->ldctl_iscritical
 686                 ? SLAP_CONTROL_CRITICAL
 687                 : SLAP_CONTROL_NONCRITICAL;
 688 #endif
 689
 690         return LDAP_SUCCESS;
 691 }
 692
 693 static int parseManageDSAit (
 694         Operation *op,
 695         SlapReply *rs,
 696         LDAPControl *ctrl )
 697 {
 698         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 699                 rs->sr_text = "manageDSAit control specified multiple times";
 700                 return LDAP_PROTOCOL_ERROR;
 701         }
 702
 703         if ( ctrl->ldctl_value.bv_len ) {
 704                 rs->sr_text = "manageDSAit control value not empty";
 705                 return LDAP_PROTOCOL_ERROR;
 706         }
 707
 708         op->o_managedsait = ctrl->ldctl_iscritical
 709                 ? SLAP_CONTROL_CRITICAL
 710                 : SLAP_CONTROL_NONCRITICAL;
 711
 712         return LDAP_SUCCESS;
 713 }
 714
 715 static int parseProxyAuthz (
 716         Operation *op,
 717         SlapReply *rs,
 718         LDAPControl *ctrl )
 719 {
 720         int             rc;
 721         struct berval   dn = BER_BVNULL;
 722
 723         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 724                 rs->sr_text = "proxy authorization control specified multiple times";
 725                 return LDAP_PROTOCOL_ERROR;
 726         }
 727
 728         op->o_proxy_authz = ctrl->ldctl_iscritical
 729                 ? SLAP_CONTROL_CRITICAL
 730                 : SLAP_CONTROL_NONCRITICAL;
 731
 732         Debug( LDAP_DEBUG_ARGS,
 733                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 734                 op->o_connid,
 735                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 736                 0 );
 737
 738         if( ctrl->ldctl_value.bv_len == 0 ) {
 739                 Debug( LDAP_DEBUG_TRACE,
 740                         "parseProxyAuthz: conn=%lu anonymous\n",
 741                         op->o_connid, 0, 0 );
 742
 743                 /* anonymous */
 744                 free( op->o_dn.bv_val );
 745                 op->o_dn.bv_len = 0;
 746                 op->o_dn.bv_val = ch_strdup( "" );
 747
 748                 free( op->o_ndn.bv_val );
 749                 op->o_ndn.bv_len = 0;
 750                 op->o_ndn.bv_val = ch_strdup( "" );
 751
 752                 return LDAP_SUCCESS;
 753         }
 754
 755         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 756                         NULL, &dn, SLAP_GETDN_AUTHZID );
 757
 758         /* FIXME: empty DN in proxyAuthz control should be legal... */
 759         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 760                 if ( dn.bv_val ) {
 761                         ch_free( dn.bv_val );
 762                 }
 763                 rs->sr_text = "authzId mapping failed";
 764                 return LDAP_PROXY_AUTHZ_FAILURE;
 765         }
 766
 767         Debug( LDAP_DEBUG_TRACE,
 768                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 769                 op->o_connid,
 770                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 771
 772         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 773
 774         if( rc ) {
 775                 ch_free( dn.bv_val );
 776                 rs->sr_text = "not authorized to assume identity";
 777                 return LDAP_PROXY_AUTHZ_FAILURE;
 778         }
 779
 780         ch_free( op->o_dn.bv_val );
 781         ch_free( op->o_ndn.bv_val );
 782
 783         op->o_dn.bv_val = NULL;
 784         op->o_ndn = dn;
 785
 786         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 787             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 788
 789         /*
 790          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 791          * from now on op->o_dn is normalized
 792          */
 793         ber_dupbv( &op->o_dn, &dn );
 794
 795         return LDAP_SUCCESS;
 796 }
 797
 798 static int parseNoOp (
 799         Operation *op,
 800         SlapReply *rs,
 801         LDAPControl *ctrl )
 802 {
 803         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 804                 rs->sr_text = "noop control specified multiple times";
 805                 return LDAP_PROTOCOL_ERROR;
 806         }
 807
 808         if ( ctrl->ldctl_value.bv_len ) {
 809                 rs->sr_text = "noop control value not empty";
 810                 return LDAP_PROTOCOL_ERROR;
 811         }
 812
 813         op->o_noop = ctrl->ldctl_iscritical
 814                 ? SLAP_CONTROL_CRITICAL
 815                 : SLAP_CONTROL_NONCRITICAL;
 816
 817         return LDAP_SUCCESS;
 818 }
 819
 820 static int parsePagedResults (
 821         Operation *op,
 822         SlapReply *rs,
 823         LDAPControl *ctrl )
 824 {
 825         int             rc = LDAP_SUCCESS;
 826         ber_tag_t       tag;
 827         ber_int_t       size;
 828         BerElement      *ber;
 829         struct berval   cookie = BER_BVNULL;
 830         PagedResultsState       *ps;
 831
 832         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 833                 rs->sr_text = "paged results control specified multiple times";
 834                 return LDAP_PROTOCOL_ERROR;
 835         }
 836
 837 #if 0   /* DELETE ME */
 838         if ( op->o_sync != SLAP_CONTROL_NONE ) {
 839                 rs->sr_text = "paged results control specified with sync control";
 840                 return LDAP_PROTOCOL_ERROR;
 841         }
 842 #endif
 843
 844         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 845                 rs->sr_text = "paged results control value is empty (or absent)";
 846                 return LDAP_PROTOCOL_ERROR;
 847         }
 848
 849         /* Parse the control value
 850          *      realSearchControlValue ::= SEQUENCE {
 851          *              size    INTEGER (0..maxInt),
 852          *                              -- requested page size from client
 853          *                              -- result set size estimate from server
 854          *              cookie  OCTET STRING
 855          * }
 856          */
 857         ber = ber_init( &ctrl->ldctl_value );
 858         if ( ber == NULL ) {
 859                 rs->sr_text = "internal error";
 860                 return LDAP_OTHER;
 861         }
 862
 863         tag = ber_scanf( ber, "{im}", &size, &cookie );
 864
 865         if ( tag == LBER_ERROR ) {
 866                 rs->sr_text = "paged results control could not be decoded";
 867                 rc = LDAP_PROTOCOL_ERROR;
 868                 goto done;
 869         }
 870
 871         if ( size < 0 ) {
 872                 rs->sr_text = "paged results control size invalid";
 873                 rc = LDAP_PROTOCOL_ERROR;
 874                 goto done;
 875         }
 876
 877 #if 0
 878         /* defer cookie decoding/checks to backend... */
 879         if ( cookie.bv_len ) {
 880                 PagedResultsCookie reqcookie;
 881                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 882                         /* bad cookie */
 883                         rs->sr_text = "paged results cookie is invalid";
 884                         rc = LDAP_PROTOCOL_ERROR;
 885                         goto done;
 886                 }
 887
 888                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 889
 890                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 891                         /* bad cookie */
 892                         rs->sr_text = "paged results cookie is invalid";
 893                         rc = LDAP_PROTOCOL_ERROR;
 894                         goto done;
 895
 896                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 897                         rs->sr_text = "paged results cookie is invalid or old";
 898                         rc = LDAP_UNWILLING_TO_PERFORM;
 899                         goto done;
 900                 }
 901
 902         } else {
 903                 /* Initial request.  Initialize state. */
 904 #if 0
 905                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 906                         /* There's another pagedResults control on the
 907                          * same connection; reject new pagedResults controls
 908                          * (allowed by RFC2696) */
 909                         rs->sr_text = "paged results cookie unavailable; try later";
 910                         rc = LDAP_UNWILLING_TO_PERFORM;
 911                         goto done;
 912                 }
 913 #endif
 914                 op->o_pagedresults_state.ps_cookie = 0;
 915                 op->o_pagedresults_state.ps_count = 0;
 916         }
 917 #endif
 918
 919         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 920         *ps = op->o_conn->c_pagedresults_state;
 921         ps->ps_size = size;
 922         op->o_pagedresults_state = ps;
 923
 924         /* NOTE: according to RFC 2696 3.:
 925
 926     If the page size is greater than or equal to the sizeLimit value, the
 927     server should ignore the control as the request can be satisfied in a
 928     single page.
 929
 930          * NOTE: this assumes that the op->ors_slimit be set
 931          * before the controls are parsed.
 932          */
 933
 934         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 935                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 936
 937         } else if ( ctrl->ldctl_iscritical ) {
 938                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 939
 940         } else {
 941                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 942         }
 943
 944 done:;
 945         (void)ber_free( ber, 1 );
 946         return rc;
 947 }
 948
 949 static int parseAssert (
 950         Operation *op,
 951         SlapReply *rs,
 952         LDAPControl *ctrl )
 953 {
 954         BerElement      *ber;
 955         struct berval   fstr = BER_BVNULL;
 956         const char *err_msg = "";
 957
 958         if ( op->o_assert != SLAP_CONTROL_NONE ) {
 959                 rs->sr_text = "assert control specified multiple times";
 960                 return LDAP_PROTOCOL_ERROR;
 961         }
 962
 963         if ( ctrl->ldctl_value.bv_len == 0 ) {
 964                 rs->sr_text = "assert control value is empty (or absent)";
 965                 return LDAP_PROTOCOL_ERROR;
 966         }
 967
 968         ber = ber_init( &(ctrl->ldctl_value) );
 969         if (ber == NULL) {
 970                 rs->sr_text = "assert control: internal error";
 971                 return LDAP_OTHER;
 972         }
 973
 974         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
 975
 976         if( rs->sr_err != LDAP_SUCCESS ) {
 977                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 978                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 979                         send_ldap_disconnect( op, rs );
 980                         rs->sr_err = SLAPD_DISCONNECT;
 981                 } else {
 982                         send_ldap_result( op, rs );
 983                 }
 984                 if( op->o_assertion != NULL ) {
 985                         filter_free_x( op, op->o_assertion );
 986                 }
 987                 return rs->sr_err;
 988         }
 989
 990 #ifdef LDAP_DEBUG
 991         filter2bv_x( op, op->o_assertion, &fstr );
 992
 993         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 994                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 995         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 996 #endif
 997
 998         op->o_assert = ctrl->ldctl_iscritical
 999                 ? SLAP_CONTROL_CRITICAL
1000                 : SLAP_CONTROL_NONCRITICAL;
1001
1002         rs->sr_err = LDAP_SUCCESS;
1003         return LDAP_SUCCESS;
1004 }
1005
1006 static int parsePreRead (
1007         Operation *op,
1008         SlapReply *rs,
1009         LDAPControl *ctrl )
1010 {
1011         ber_len_t siz, off, i;
1012         AttributeName *an = NULL;
1013         BerElement      *ber;
1014
1015         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1016                 rs->sr_text = "preread control specified multiple times";
1017                 return LDAP_PROTOCOL_ERROR;
1018         }
1019
1020         if ( ctrl->ldctl_value.bv_len == 0 ) {
1021                 rs->sr_text = "preread control value is empty (or absent)";
1022                 return LDAP_PROTOCOL_ERROR;
1023         }
1024
1025         ber = ber_init( &(ctrl->ldctl_value) );
1026         if (ber == NULL) {
1027                 rs->sr_text = "preread control: internal error";
1028                 return LDAP_OTHER;
1029         }
1030
1031         siz = sizeof( AttributeName );
1032         off = offsetof( AttributeName, an_name );
1033         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1034                 rs->sr_text = "preread control: decoding error";
1035                 return LDAP_PROTOCOL_ERROR;
1036         }
1037
1038         for( i=0; i<siz; i++ ) {
1039                 int             rc = LDAP_SUCCESS;
1040                 const char      *dummy = NULL;
1041
1042                 an[i].an_desc = NULL;
1043                 an[i].an_oc = NULL;
1044                 an[i].an_oc_exclude = 0;
1045                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1046                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1047                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1048                         return rc;
1049                 }
1050         }
1051
1052         op->o_preread = ctrl->ldctl_iscritical
1053                 ? SLAP_CONTROL_CRITICAL
1054                 : SLAP_CONTROL_NONCRITICAL;
1055
1056         op->o_preread_attrs = an;
1057
1058         rs->sr_err = LDAP_SUCCESS;
1059         return LDAP_SUCCESS;
1060 }
1061
1062 static int parsePostRead (
1063         Operation *op,
1064         SlapReply *rs,
1065         LDAPControl *ctrl )
1066 {
1067         ber_len_t siz, off, i;
1068         AttributeName *an = NULL;
1069         BerElement      *ber;
1070
1071         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1072                 rs->sr_text = "postread control specified multiple times";
1073                 return LDAP_PROTOCOL_ERROR;
1074         }
1075
1076         if ( ctrl->ldctl_value.bv_len == 0 ) {
1077                 rs->sr_text = "postread control value is empty (or absent)";
1078                 return LDAP_PROTOCOL_ERROR;
1079         }
1080
1081         ber = ber_init( &(ctrl->ldctl_value) );
1082         if (ber == NULL) {
1083                 rs->sr_text = "postread control: internal error";
1084                 return LDAP_OTHER;
1085         }
1086
1087         siz = sizeof( AttributeName );
1088         off = offsetof( AttributeName, an_name );
1089         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1090                 rs->sr_text = "postread control: decoding error";
1091                 return LDAP_PROTOCOL_ERROR;
1092         }
1093
1094         for( i=0; i<siz; i++ ) {
1095                 int             rc = LDAP_SUCCESS;
1096                 const char      *dummy = NULL;
1097
1098                 an[i].an_desc = NULL;
1099                 an[i].an_oc = NULL;
1100                 an[i].an_oc_exclude = 0;
1101                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1102                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1103                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1104                         return rc;
1105                 }
1106         }
1107
1108         op->o_postread = ctrl->ldctl_iscritical
1109                 ? SLAP_CONTROL_CRITICAL
1110                 : SLAP_CONTROL_NONCRITICAL;
1111
1112         op->o_postread_attrs = an;
1113
1114         rs->sr_err = LDAP_SUCCESS;
1115         return LDAP_SUCCESS;
1116 }
1117
1118 int parseValuesReturnFilter (
1119         Operation *op,
1120         SlapReply *rs,
1121         LDAPControl *ctrl )
1122 {
1123         BerElement      *ber;
1124         struct berval   fstr = BER_BVNULL;
1125         const char *err_msg = "";
1126
1127         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1128                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1129                 return LDAP_PROTOCOL_ERROR;
1130         }
1131
1132         if ( ctrl->ldctl_value.bv_len == 0 ) {
1133                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1134                 return LDAP_PROTOCOL_ERROR;
1135         }
1136
1137         ber = ber_init( &(ctrl->ldctl_value) );
1138         if (ber == NULL) {
1139                 rs->sr_text = "internal error";
1140                 return LDAP_OTHER;
1141         }
1142
1143         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1144
1145         if( rs->sr_err != LDAP_SUCCESS ) {
1146                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1147                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1148                         send_ldap_disconnect( op, rs );
1149                         rs->sr_err = SLAPD_DISCONNECT;
1150                 } else {
1151                         send_ldap_result( op, rs );
1152                 }
1153                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1154         }
1155 #ifdef LDAP_DEBUG
1156         else {
1157                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1158         }
1159
1160         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1161                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1162         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1163 #endif
1164
1165         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1166                 ? SLAP_CONTROL_CRITICAL
1167                 : SLAP_CONTROL_NONCRITICAL;
1168
1169         rs->sr_err = LDAP_SUCCESS;
1170         return LDAP_SUCCESS;
1171 }
1172
1173 #ifdef LDAP_CONTROL_SUBENTRIES
1174 static int parseSubentries (
1175         Operation *op,
1176         SlapReply *rs,
1177         LDAPControl *ctrl )
1178 {
1179         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1180                 rs->sr_text = "subentries control specified multiple times";
1181                 return LDAP_PROTOCOL_ERROR;
1182         }
1183
1184         /* FIXME: should use BER library */
1185         if( ( ctrl->ldctl_value.bv_len != 3 )
1186                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1187                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1188         {
1189                 rs->sr_text = "subentries control value encoding is bogus";
1190                 return LDAP_PROTOCOL_ERROR;
1191         }
1192
1193         op->o_subentries = ctrl->ldctl_iscritical
1194                 ? SLAP_CONTROL_CRITICAL
1195                 : SLAP_CONTROL_NONCRITICAL;
1196
1197         if ( (void *)(ctrl->ldctl_value.bv_val[2] != 0x00))
1198                 set_subentries_visibility( op );
1199
1200         return LDAP_SUCCESS;
1201 }
1202 #endif
1203
1204 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1205 static int parsePermissiveModify (
1206         Operation *op,
1207         SlapReply *rs,
1208         LDAPControl *ctrl )
1209 {
1210         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1211                 rs->sr_text = "permissiveModify control specified multiple times";
1212                 return LDAP_PROTOCOL_ERROR;
1213         }
1214
1215         if ( ctrl->ldctl_value.bv_len ) {
1216                 rs->sr_text = "permissiveModify control value not empty";
1217                 return LDAP_PROTOCOL_ERROR;
1218         }
1219
1220         op->o_permissive_modify = ctrl->ldctl_iscritical
1221                 ? SLAP_CONTROL_CRITICAL
1222                 : SLAP_CONTROL_NONCRITICAL;
1223
1224         return LDAP_SUCCESS;
1225 }
1226 #endif
1227
1228 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1229 static int parseDomainScope (
1230         Operation *op,
1231         SlapReply *rs,
1232         LDAPControl *ctrl )
1233 {
1234         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1235                 rs->sr_text = "domainScope control specified multiple times";
1236                 return LDAP_PROTOCOL_ERROR;
1237         }
1238
1239         if ( ctrl->ldctl_value.bv_len ) {
1240                 rs->sr_text = "domainScope control value not empty";
1241                 return LDAP_PROTOCOL_ERROR;
1242         }
1243
1244         op->o_domain_scope = ctrl->ldctl_iscritical
1245                 ? SLAP_CONTROL_CRITICAL
1246                 : SLAP_CONTROL_NONCRITICAL;
1247
1248         return LDAP_SUCCESS;
1249 }
1250 #endif
1251
1252 #ifdef LDAP_CONTROL_X_TREE_DELETE
1253 static int parseTreeDelete (
1254         Operation *op,
1255         SlapReply *rs,
1256         LDAPControl *ctrl )
1257 {
1258         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1259                 rs->sr_text = "treeDelete control specified multiple times";
1260                 return LDAP_PROTOCOL_ERROR;
1261         }
1262
1263         if ( ctrl->ldctl_value.bv_len ) {
1264                 rs->sr_text = "treeDelete control value not empty";
1265                 return LDAP_PROTOCOL_ERROR;
1266         }
1267
1268         op->o_tree_delete = ctrl->ldctl_iscritical
1269                 ? SLAP_CONTROL_CRITICAL
1270                 : SLAP_CONTROL_NONCRITICAL;
1271
1272         return LDAP_SUCCESS;
1273 }
1274 #endif
1275
1276 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1277 static int parseSearchOptions (
1278         Operation *op,
1279         SlapReply *rs,
1280         LDAPControl *ctrl )
1281 {
1282         BerElement *ber;
1283         ber_int_t search_flags;
1284
1285         if ( ctrl->ldctl_value.bv_len == 0 ) {
1286                 rs->sr_text = "searchOptions control value not empty";
1287                 return LDAP_PROTOCOL_ERROR;
1288         }
1289
1290         ber = ber_init( &ctrl->ldctl_value );
1291         if( ber == NULL ) {
1292                 rs->sr_text = "internal error";
1293                 return LDAP_OTHER;
1294         }
1295
1296         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1297                 rs->sr_text = "searchOptions control decoding error";
1298                 return LDAP_PROTOCOL_ERROR;
1299         }
1300
1301         (void) ber_free( ber, 1 );
1302
1303         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1304                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1305                         rs->sr_text = "searchOptions control specified multiple times "
1306                                 "or with domainScope control";
1307                         return LDAP_PROTOCOL_ERROR;
1308                 }
1309
1310                 op->o_domain_scope = ctrl->ldctl_iscritical
1311                         ? SLAP_CONTROL_CRITICAL
1312                         : SLAP_CONTROL_NONCRITICAL;
1313         }
1314
1315         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1316                 /* Other search flags not recognised so far */
1317                 rs->sr_text = "searchOptions contained unrecongized flag";
1318                 return LDAP_UNWILLING_TO_PERFORM;
1319         }
1320
1321         return LDAP_SUCCESS;
1322 }
1323 #endif
1324