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 parseManageDIT;
  32 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  33 static SLAP_CTRL_PARSE_FN parseModifyIncrement;
  34 static SLAP_CTRL_PARSE_FN parseNoOp;
  35 static SLAP_CTRL_PARSE_FN parsePagedResults;
  36 #ifdef LDAP_DEVEL
  37 static SLAP_CTRL_PARSE_FN parseSortedResults;
  38 #endif
  39 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  40 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  41 static SLAP_CTRL_PARSE_FN parseDomainScope;
  42 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  43 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  44 static SLAP_CTRL_PARSE_FN parseSubentries;
  45
  46 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  47
  48 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  49 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  50
  51 struct slap_control_ids slap_cids;
  52
  53 struct slap_control {
  54         /* Control OID */
  55         char *sc_oid;
  56
  57         /* The controlID for this control */
  58         int sc_cid;
  59
  60         /* Operations supported by control */
  61         slap_mask_t sc_mask;
  62
  63         /* Extended operations supported by control */
  64         char **sc_extendedops;
  65
  66         /* Control parsing callback */
  67         SLAP_CTRL_PARSE_FN *sc_parse;
  68
  69         LDAP_SLIST_ENTRY(slap_control) sc_next;
  70 };
  71
  72 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  73         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  74
  75 /*
  76  * all known request control OIDs should be added to this list
  77  */
  78 /*
  79  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  80  * addresses an undefined control; this allows to safely test for
  81  * well known controls even if they are not registered, e.g. if
  82  * they get moved to modules.  An example is sc_LDAPsync, which
  83  * is implemented in the syncprov overlay and thus, if configured
  84  * as dynamic module, may not be registered.  One side effect is that
  85  * slap_known_controls[0] == NULL, so it should always be used
  86  * starting from 1.
  87  * FIXME: should we define the "undefined control" oid?
  88  */
  89 char *slap_known_controls[SLAP_MAX_CIDS+1];
  90 static int num_known_controls = 1;
  91
  92 static char *proxy_authz_extops[] = {
  93         LDAP_EXOP_MODIFY_PASSWD,
  94         LDAP_EXOP_X_WHO_AM_I,
  95         NULL
  96 };
  97
  98 static struct slap_control control_defs[] = {
  99         {  LDAP_CONTROL_ASSERT,
 100                 (int)offsetof(struct slap_control_ids, sc_assert),
 101                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 102                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 103         { LDAP_CONTROL_PRE_READ,
 104                 (int)offsetof(struct slap_control_ids, sc_preRead),
 105                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 106                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 107         { LDAP_CONTROL_POST_READ,
 108                 (int)offsetof(struct slap_control_ids, sc_postRead),
 109                 SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 110                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 111         { LDAP_CONTROL_VALUESRETURNFILTER,
 112                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 113                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 114                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 115         { LDAP_CONTROL_PAGEDRESULTS,
 116                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 117                 SLAP_CTRL_SEARCH, NULL,
 118                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 119 #ifdef LDAP_DEVEL
 120         { LDAP_CONTROL_SORTREQUEST,
 121                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 122                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 123                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 124 #endif
 125 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 126         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 127                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 128                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 129                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 130 #endif
 131 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 132         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 133                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 134                 SLAP_CTRL_MODIFY, NULL,
 135                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 136 #endif
 137 #ifdef SLAP_CONTROL_X_TREE_DELETE
 138         { LDAP_CONTROL_X_TREE_DELETE,
 139                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 140                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE, NULL,
 141                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 142 #endif
 143 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
 144         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 145                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 146                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 147                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 148 #endif
 149 #ifdef LDAP_CONTROL_SUBENTRIES
 150         { LDAP_CONTROL_SUBENTRIES,
 151                 (int)offsetof(struct slap_control_ids, sc_subentries),
 152                 SLAP_CTRL_SEARCH, NULL,
 153                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 154 #endif
 155         { LDAP_CONTROL_NOOP,
 156                 (int)offsetof(struct slap_control_ids, sc_noOp),
 157                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 158                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 159 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 160         { LDAP_CONTROL_MODIFY_INCREMENT,
 161                 (int)offsetof(struct slap_control_ids, sc_modifyIncrement),
 162                 SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
 163                 parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 164 #endif
 165         { LDAP_CONTROL_MANAGEDIT,
 166                 (int)offsetof(struct slap_control_ids, sc_manageDIT),
 167                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE, NULL,
 168                 parseManageDIT, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 169         { LDAP_CONTROL_MANAGEDSAIT,
 170                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 171                 SLAP_CTRL_ACCESS, NULL,
 172                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 173         { LDAP_CONTROL_PROXY_AUTHZ,
 174                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 175                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
 176                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 177         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 178 };
 179
 180 /*
 181  * Register a supported control.
 182  *
 183  * This can be called by an OpenLDAP plugin or, indirectly, by a
 184  * SLAPI plugin calling slapi_register_supported_control().
 185  */
 186 int
 187 register_supported_control(const char *controloid,
 188         slap_mask_t controlmask,
 189         char **controlexops,
 190         SLAP_CTRL_PARSE_FN *controlparsefn,
 191         int *controlcid)
 192 {
 193         struct slap_control *sc;
 194         int i;
 195
 196         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 197                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 198                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 199                 SLAP_MAX_CIDS, 0, 0 );
 200                 return LDAP_OTHER;
 201         }
 202
 203         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 204
 205         /* sanity check - should never happen */
 206         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 207                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 208                         Debug( LDAP_DEBUG_ANY,
 209                                 "Control %s already registered.\n",
 210                                 controloid, 0, 0 );
 211                         return LDAP_PARAM_ERROR;
 212                 }
 213         }
 214
 215         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 216         if ( sc == NULL ) return LDAP_NO_MEMORY;
 217
 218         sc->sc_oid = ch_strdup( controloid );
 219         sc->sc_mask = controlmask;
 220         if ( controlexops != NULL ) {
 221                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 222                 if ( sc->sc_extendedops == NULL ) {
 223                         ch_free( sc );
 224                         return LDAP_NO_MEMORY;
 225                 }
 226         } else {
 227                 sc->sc_extendedops = NULL;
 228         }
 229         sc->sc_parse = controlparsefn;
 230
 231         if ( controlcid ) *controlcid = num_known_controls;
 232         sc->sc_cid = num_known_controls;
 233
 234         /* Update slap_known_controls, too. */
 235         slap_known_controls[num_known_controls-1] = sc->sc_oid;
 236         slap_known_controls[num_known_controls++] = NULL;
 237
 238         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 239         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 240         return LDAP_SUCCESS;
 241 }
 242
 243 /*
 244  * One-time initialization of internal controls.
 245  */
 246 int
 247 slap_controls_init( void )
 248 {
 249         int i, rc;
 250         struct slap_control *sc;
 251
 252         rc = LDAP_SUCCESS;
 253
 254         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 255                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 256                 rc = register_supported_control( control_defs[i].sc_oid,
 257                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 258                         control_defs[i].sc_parse, cid );
 259                 if ( rc != LDAP_SUCCESS ) break;
 260         }
 261
 262         return rc;
 263 }
 264
 265 /*
 266  * Free memory associated with list of supported controls.
 267  */
 268 void
 269 controls_destroy( void )
 270 {
 271         struct slap_control *sc;
 272
 273         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 274                 sc = LDAP_SLIST_FIRST(&controls_list);
 275                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 276
 277                 ch_free( sc->sc_oid );
 278                 if ( sc->sc_extendedops != NULL ) {
 279                         ldap_charray_free( sc->sc_extendedops );
 280                 }
 281                 ch_free( sc );
 282         }
 283 }
 284
 285 /*
 286  * Format the supportedControl attribute of the root DSE,
 287  * detailing which controls are supported by the directory
 288  * server.
 289  */
 290 int
 291 controls_root_dse_info( Entry *e )
 292 {
 293         AttributeDescription *ad_supportedControl
 294                 = slap_schema.si_ad_supportedControl;
 295         struct berval vals[2];
 296         struct slap_control *sc;
 297
 298         vals[1].bv_val = NULL;
 299         vals[1].bv_len = 0;
 300
 301         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 302                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 303
 304                 vals[0].bv_val = sc->sc_oid;
 305                 vals[0].bv_len = strlen( sc->sc_oid );
 306
 307                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 308                         return -1;
 309                 }
 310         }
 311
 312         return 0;
 313 }
 314
 315 /*
 316  * Return a list of OIDs and operation masks for supported
 317  * controls. Used by SLAPI.
 318  */
 319 int
 320 get_supported_controls(char ***ctrloidsp,
 321         slap_mask_t **ctrlmasks)
 322 {
 323         int i, n;
 324         char **oids;
 325         slap_mask_t *masks;
 326         int rc;
 327         struct slap_control *sc;
 328
 329         n = 0;
 330
 331         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 332                 n++;
 333         }
 334
 335         if ( n == 0 ) {
 336                 *ctrloidsp = NULL;
 337                 *ctrlmasks = NULL;
 338                 return LDAP_SUCCESS;
 339         }
 340
 341         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 342         if ( oids == NULL ) {
 343                 return LDAP_NO_MEMORY;
 344         }
 345         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 346         if  ( masks == NULL ) {
 347                 ch_free( oids );
 348                 return LDAP_NO_MEMORY;
 349         }
 350
 351         n = 0;
 352
 353         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 354                 oids[n] = ch_strdup( sc->sc_oid );
 355                 masks[n] = sc->sc_mask;
 356                 n++;
 357         }
 358         oids[n] = NULL;
 359         masks[n] = 0;
 360
 361         *ctrloidsp = oids;
 362         *ctrlmasks = masks;
 363
 364         return LDAP_SUCCESS;
 365 }
 366
 367 /*
 368  * Find a control given its OID.
 369  */
 370 static struct slap_control *
 371 find_ctrl( const char *oid )
 372 {
 373         struct slap_control *sc;
 374
 375         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 376                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 377                         return sc;
 378                 }
 379         }
 380
 381         return NULL;
 382 }
 383
 384 int
 385 slap_find_control_id(
 386         const char *oid,
 387         int *cid )
 388 {
 389         struct slap_control *ctrl = find_ctrl( oid );
 390         if ( ctrl ) {
 391                 if ( cid ) *cid = ctrl->sc_cid;
 392                 return LDAP_SUCCESS;
 393         }
 394         return LDAP_CONTROL_NOT_FOUND;
 395 }
 396
 397 int
 398 slap_global_control( Operation *op, const char *oid, int *cid )
 399 {
 400         struct slap_control *ctrl = find_ctrl( oid );
 401
 402         if ( ctrl == NULL ) {
 403                 /* should not be reachable */
 404                 Debug( LDAP_DEBUG_ANY,
 405                         "slap_global_control: unrecognized control: %s\n",
 406                         oid, 0, 0 );
 407                 return LDAP_CONTROL_NOT_FOUND;
 408         }
 409
 410         if ( cid ) *cid = ctrl->sc_cid;
 411
 412         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 413                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 414                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 415         {
 416                 return LDAP_COMPARE_TRUE;
 417         }
 418
 419         Debug( LDAP_DEBUG_TRACE,
 420                 "slap_global_control: unavailable control: %s\n",
 421                 oid, 0, 0 );
 422
 423         return LDAP_COMPARE_FALSE;
 424 }
 425
 426 void slap_free_ctrls(
 427         Operation *op,
 428         LDAPControl **ctrls )
 429 {
 430         int i;
 431
 432         for (i=0; ctrls[i]; i++) {
 433                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 434         }
 435         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 436 }
 437
 438 int get_ctrls(
 439         Operation *op,
 440         SlapReply *rs,
 441         int sendres )
 442 {
 443         int nctrls = 0;
 444         ber_tag_t tag;
 445         ber_len_t len;
 446         char *opaque;
 447         BerElement *ber = op->o_ber;
 448         struct slap_control *sc;
 449         struct berval bv;
 450
 451         len = ber_pvt_ber_remaining(ber);
 452
 453         if( len == 0) {
 454                 /* no controls */
 455                 rs->sr_err = LDAP_SUCCESS;
 456                 return rs->sr_err;
 457         }
 458
 459         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 460                 if( tag == LBER_ERROR ) {
 461                         rs->sr_err = SLAPD_DISCONNECT;
 462                         rs->sr_text = "unexpected data in PDU";
 463                 }
 464
 465                 goto return_results;
 466         }
 467
 468         Debug( LDAP_DEBUG_TRACE,
 469                 "=> get_ctrls\n", 0, 0, 0 );
 470
 471         if( op->o_protocol < LDAP_VERSION3 ) {
 472                 rs->sr_err = SLAPD_DISCONNECT;
 473                 rs->sr_text = "controls require LDAPv3";
 474                 goto return_results;
 475         }
 476
 477         /* one for first control, one for termination */
 478         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 479
 480 #if 0
 481         if( op->ctrls == NULL ) {
 482                 rs->sr_err = LDAP_NO_MEMORY;
 483                 rs->sr_text = "no memory";
 484                 goto return_results;
 485         }
 486 #endif
 487
 488         op->o_ctrls[nctrls] = NULL;
 489
 490         /* step through each element */
 491         for( tag = ber_first_element( ber, &len, &opaque );
 492                 tag != LBER_ERROR;
 493                 tag = ber_next_element( ber, &len, opaque ) )
 494         {
 495                 LDAPControl *c;
 496                 LDAPControl **tctrls;
 497
 498                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 499                 memset(c, 0, sizeof(LDAPControl));
 500
 501                 /* allocate pointer space for current controls (nctrls)
 502                  * + this control + extra NULL
 503                  */
 504                 tctrls = op->o_tmprealloc( op->o_ctrls,
 505                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 506
 507 #if 0
 508                 if( tctrls == NULL ) {
 509                         ch_free( c );
 510                         ldap_controls_free(op->o_ctrls);
 511                         op->o_ctrls = NULL;
 512
 513                         rs->sr_err = LDAP_NO_MEMORY;
 514                         rs->sr_text = "no memory";
 515                         goto return_results;
 516                 }
 517 #endif
 518                 op->o_ctrls = tctrls;
 519
 520                 op->o_ctrls[nctrls++] = c;
 521                 op->o_ctrls[nctrls] = NULL;
 522
 523                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 524                 c->ldctl_oid = bv.bv_val;
 525
 526                 if( tag == LBER_ERROR ) {
 527                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 528                                 0, 0, 0 );
 529
 530                         slap_free_ctrls( op, op->o_ctrls );
 531                         op->o_ctrls = NULL;
 532                         rs->sr_err = SLAPD_DISCONNECT;
 533                         rs->sr_text = "decoding controls error";
 534                         goto return_results;
 535
 536                 } else if( c->ldctl_oid == NULL ) {
 537                         Debug( LDAP_DEBUG_TRACE,
 538                                 "get_ctrls: conn %lu got emtpy OID.\n",
 539                                 op->o_connid, 0, 0 );
 540
 541                         slap_free_ctrls( op, op->o_ctrls );
 542                         op->o_ctrls = NULL;
 543                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 544                         rs->sr_text = "OID field is empty";
 545                         goto return_results;
 546                 }
 547
 548                 tag = ber_peek_tag( ber, &len );
 549
 550                 if( tag == LBER_BOOLEAN ) {
 551                         ber_int_t crit;
 552                         tag = ber_scanf( ber, "b", &crit );
 553
 554                         if( tag == LBER_ERROR ) {
 555                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 556                                         0, 0, 0 );
 557                                 slap_free_ctrls( op, op->o_ctrls );
 558                                 op->o_ctrls = NULL;
 559                                 rs->sr_err = SLAPD_DISCONNECT;
 560                                 rs->sr_text = "decoding controls error";
 561                                 goto return_results;
 562                         }
 563
 564                         c->ldctl_iscritical = (crit != 0);
 565                         tag = ber_peek_tag( ber, &len );
 566                 }
 567
 568                 if( tag == LBER_OCTETSTRING ) {
 569                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 570
 571                         if( tag == LBER_ERROR ) {
 572                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 573                                         "%s (%scritical): get value failed.\n",
 574                                         op->o_connid, c->ldctl_oid,
 575                                         c->ldctl_iscritical ? "" : "non" );
 576                                 slap_free_ctrls( op, op->o_ctrls );
 577                                 op->o_ctrls = NULL;
 578                                 rs->sr_err = SLAPD_DISCONNECT;
 579                                 rs->sr_text = "decoding controls error";
 580                                 goto return_results;
 581                         }
 582                 }
 583
 584                 Debug( LDAP_DEBUG_TRACE,
 585                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 586                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 587
 588                 sc = find_ctrl( c->ldctl_oid );
 589                 if( sc != NULL ) {
 590                         /* recognized control */
 591                         slap_mask_t tagmask;
 592                         switch( op->o_tag ) {
 593                         case LDAP_REQ_ADD:
 594                                 tagmask = SLAP_CTRL_ADD;
 595                                 break;
 596                         case LDAP_REQ_BIND:
 597                                 tagmask = SLAP_CTRL_BIND;
 598                                 break;
 599                         case LDAP_REQ_COMPARE:
 600                                 tagmask = SLAP_CTRL_COMPARE;
 601                                 break;
 602                         case LDAP_REQ_DELETE:
 603                                 tagmask = SLAP_CTRL_DELETE;
 604                                 break;
 605                         case LDAP_REQ_MODIFY:
 606                                 tagmask = SLAP_CTRL_MODIFY;
 607                                 break;
 608                         case LDAP_REQ_RENAME:
 609                                 tagmask = SLAP_CTRL_RENAME;
 610                                 break;
 611                         case LDAP_REQ_SEARCH:
 612                                 tagmask = SLAP_CTRL_SEARCH;
 613                                 break;
 614                         case LDAP_REQ_UNBIND:
 615                                 tagmask = SLAP_CTRL_UNBIND;
 616                                 break;
 617                         case LDAP_REQ_ABANDON:
 618                                 tagmask = SLAP_CTRL_ABANDON;
 619                                 break;
 620                         case LDAP_REQ_EXTENDED:
 621                                 tagmask=~0L;
 622                                 assert( op->ore_reqoid.bv_val != NULL );
 623                                 if( sc->sc_extendedops != NULL ) {
 624                                         int i;
 625                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 626                                                 if( strcmp( op->ore_reqoid.bv_val,
 627                                                         sc->sc_extendedops[i] ) == 0 )
 628                                                 {
 629                                                         tagmask=0L;
 630                                                         break;
 631                                                 }
 632                                         }
 633                                 }
 634                                 break;
 635                         default:
 636                                 rs->sr_err = LDAP_OTHER;
 637                                 rs->sr_text = "controls internal error";
 638                                 goto return_results;
 639                         }
 640
 641                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 642                                 /* available extension */
 643                                 int     rc;
 644
 645                                 if( !sc->sc_parse ) {
 646                                         rs->sr_err = LDAP_OTHER;
 647                                         rs->sr_text = "not yet implemented";
 648                                         goto return_results;
 649                                 }
 650
 651                                 rc = sc->sc_parse( op, rs, c );
 652                                 if ( rc ) {
 653                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 654                                         rs->sr_err = rc;
 655                                         goto return_results;
 656                                 }
 657
 658                         } else if( c->ldctl_iscritical ) {
 659                                 /* unavailable CRITICAL control */
 660                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 661                                 rs->sr_text = "critical extension is unavailable";
 662                                 goto return_results;
 663                         }
 664
 665                 } else if( c->ldctl_iscritical ) {
 666                         /* unrecognized CRITICAL control */
 667                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 668                         rs->sr_text = "critical extension is not recognized";
 669                         goto return_results;
 670                 }
 671 next_ctrl:;
 672         }
 673
 674 return_results:
 675         Debug( LDAP_DEBUG_TRACE,
 676                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 677                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 678
 679         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 680                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 681                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 682                         send_ldap_disconnect( op, rs );
 683                         rs->sr_err = SLAPD_DISCONNECT;
 684                 } else {
 685                         send_ldap_result( op, rs );
 686                 }
 687         }
 688
 689         return rs->sr_err;
 690 }
 691
 692 static int parseModifyIncrement (
 693         Operation *op,
 694         SlapReply *rs,
 695         LDAPControl *ctrl )
 696 {
 697 #if 0
 698         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 699                 rs->sr_text = "modifyIncrement control specified multiple times";
 700                 return LDAP_PROTOCOL_ERROR;
 701         }
 702 #endif
 703
 704         if ( ctrl->ldctl_value.bv_len ) {
 705                 rs->sr_text = "modifyIncrement control value not empty";
 706                 return LDAP_PROTOCOL_ERROR;
 707         }
 708
 709 #if 0
 710         op->o_modifyIncrement = ctrl->ldctl_iscritical
 711                 ? SLAP_CONTROL_CRITICAL
 712                 : SLAP_CONTROL_NONCRITICAL;
 713 #endif
 714
 715         return LDAP_SUCCESS;
 716 }
 717
 718 static int parseManageDIT (
 719         Operation *op,
 720         SlapReply *rs,
 721         LDAPControl *ctrl )
 722 {
 723         if ( op->o_managedit != SLAP_CONTROL_NONE ) {
 724                 rs->sr_text = "manageDIT control specified multiple times";
 725                 return LDAP_PROTOCOL_ERROR;
 726         }
 727
 728         if ( ctrl->ldctl_value.bv_len ) {
 729                 rs->sr_text = "manageDIT control value not empty";
 730                 return LDAP_PROTOCOL_ERROR;
 731         }
 732
 733         op->o_managedit = ctrl->ldctl_iscritical
 734                 ? SLAP_CONTROL_CRITICAL
 735                 : SLAP_CONTROL_NONCRITICAL;
 736
 737         return LDAP_SUCCESS;
 738 }
 739
 740 static int parseManageDSAit (
 741         Operation *op,
 742         SlapReply *rs,
 743         LDAPControl *ctrl )
 744 {
 745         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 746                 rs->sr_text = "manageDSAit control specified multiple times";
 747                 return LDAP_PROTOCOL_ERROR;
 748         }
 749
 750         if ( ctrl->ldctl_value.bv_len ) {
 751                 rs->sr_text = "manageDSAit control value not empty";
 752                 return LDAP_PROTOCOL_ERROR;
 753         }
 754
 755         op->o_managedsait = ctrl->ldctl_iscritical
 756                 ? SLAP_CONTROL_CRITICAL
 757                 : SLAP_CONTROL_NONCRITICAL;
 758
 759         return LDAP_SUCCESS;
 760 }
 761
 762 static int parseProxyAuthz (
 763         Operation *op,
 764         SlapReply *rs,
 765         LDAPControl *ctrl )
 766 {
 767         int             rc;
 768         struct berval   dn = BER_BVNULL;
 769
 770         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 771                 rs->sr_text = "proxy authorization control specified multiple times";
 772                 return LDAP_PROTOCOL_ERROR;
 773         }
 774
 775         op->o_proxy_authz = ctrl->ldctl_iscritical
 776                 ? SLAP_CONTROL_CRITICAL
 777                 : SLAP_CONTROL_NONCRITICAL;
 778
 779         Debug( LDAP_DEBUG_ARGS,
 780                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 781                 op->o_connid,
 782                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 783                 0 );
 784
 785         if ( ctrl->ldctl_value.bv_len == 0 ) {
 786                 Debug( LDAP_DEBUG_TRACE,
 787                         "parseProxyAuthz: conn=%lu anonymous\n",
 788                         op->o_connid, 0, 0 );
 789
 790                 /* anonymous */
 791                 op->o_ndn.bv_val[ 0 ] = '\0';
 792                 op->o_ndn.bv_len = 0;
 793
 794                 op->o_dn.bv_val[ 0 ] = '\0';
 795                 op->o_dn.bv_len = 0;
 796
 797                 return LDAP_SUCCESS;
 798         }
 799
 800         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 801                         NULL, &dn, SLAP_GETDN_AUTHZID );
 802
 803         /* FIXME: empty DN in proxyAuthz control should be legal... */
 804         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 805                 if ( dn.bv_val ) {
 806                         ch_free( dn.bv_val );
 807                 }
 808                 rs->sr_text = "authzId mapping failed";
 809                 return LDAP_PROXY_AUTHZ_FAILURE;
 810         }
 811
 812         Debug( LDAP_DEBUG_TRACE,
 813                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 814                 op->o_connid,
 815                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 816
 817         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 818
 819         if ( rc ) {
 820                 ch_free( dn.bv_val );
 821                 rs->sr_text = "not authorized to assume identity";
 822                 return LDAP_PROXY_AUTHZ_FAILURE;
 823         }
 824
 825         ch_free( op->o_ndn.bv_val );
 826         ch_free( op->o_dn.bv_val );
 827
 828         /*
 829          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 830          * from now on op->o_dn is normalized
 831          */
 832         op->o_ndn = dn;
 833         ber_dupbv( &op->o_dn, &dn );
 834
 835
 836         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 837             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 838
 839         return LDAP_SUCCESS;
 840 }
 841
 842 static int parseNoOp (
 843         Operation *op,
 844         SlapReply *rs,
 845         LDAPControl *ctrl )
 846 {
 847         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 848                 rs->sr_text = "noop control specified multiple times";
 849                 return LDAP_PROTOCOL_ERROR;
 850         }
 851
 852         if ( ctrl->ldctl_value.bv_len ) {
 853                 rs->sr_text = "noop control value not empty";
 854                 return LDAP_PROTOCOL_ERROR;
 855         }
 856
 857         op->o_noop = ctrl->ldctl_iscritical
 858                 ? SLAP_CONTROL_CRITICAL
 859                 : SLAP_CONTROL_NONCRITICAL;
 860
 861         return LDAP_SUCCESS;
 862 }
 863
 864 static int parsePagedResults (
 865         Operation *op,
 866         SlapReply *rs,
 867         LDAPControl *ctrl )
 868 {
 869         int             rc = LDAP_SUCCESS;
 870         ber_tag_t       tag;
 871         ber_int_t       size;
 872         BerElement      *ber;
 873         struct berval   cookie = BER_BVNULL;
 874         PagedResultsState       *ps;
 875
 876         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 877                 rs->sr_text = "paged results control specified multiple times";
 878                 return LDAP_PROTOCOL_ERROR;
 879         }
 880
 881         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 882                 rs->sr_text = "paged results control value is empty (or absent)";
 883                 return LDAP_PROTOCOL_ERROR;
 884         }
 885
 886         /* Parse the control value
 887          *      realSearchControlValue ::= SEQUENCE {
 888          *              size    INTEGER (0..maxInt),
 889          *                              -- requested page size from client
 890          *                              -- result set size estimate from server
 891          *              cookie  OCTET STRING
 892          * }
 893          */
 894         ber = ber_init( &ctrl->ldctl_value );
 895         if ( ber == NULL ) {
 896                 rs->sr_text = "internal error";
 897                 return LDAP_OTHER;
 898         }
 899
 900         tag = ber_scanf( ber, "{im}", &size, &cookie );
 901
 902         if ( tag == LBER_ERROR ) {
 903                 rs->sr_text = "paged results control could not be decoded";
 904                 rc = LDAP_PROTOCOL_ERROR;
 905                 goto done;
 906         }
 907
 908         if ( size < 0 ) {
 909                 rs->sr_text = "paged results control size invalid";
 910                 rc = LDAP_PROTOCOL_ERROR;
 911                 goto done;
 912         }
 913
 914 #if 0
 915         /* defer cookie decoding/checks to backend... */
 916         if ( cookie.bv_len ) {
 917                 PagedResultsCookie reqcookie;
 918                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 919                         /* bad cookie */
 920                         rs->sr_text = "paged results cookie is invalid";
 921                         rc = LDAP_PROTOCOL_ERROR;
 922                         goto done;
 923                 }
 924
 925                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 926
 927                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 928                         /* bad cookie */
 929                         rs->sr_text = "paged results cookie is invalid";
 930                         rc = LDAP_PROTOCOL_ERROR;
 931                         goto done;
 932
 933                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 934                         rs->sr_text = "paged results cookie is invalid or old";
 935                         rc = LDAP_UNWILLING_TO_PERFORM;
 936                         goto done;
 937                 }
 938
 939         } else {
 940                 /* Initial request.  Initialize state. */
 941 #if 0
 942                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 943                         /* There's another pagedResults control on the
 944                          * same connection; reject new pagedResults controls
 945                          * (allowed by RFC2696) */
 946                         rs->sr_text = "paged results cookie unavailable; try later";
 947                         rc = LDAP_UNWILLING_TO_PERFORM;
 948                         goto done;
 949                 }
 950 #endif
 951                 op->o_pagedresults_state.ps_cookie = 0;
 952                 op->o_pagedresults_state.ps_count = 0;
 953         }
 954 #endif
 955
 956         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 957         *ps = op->o_conn->c_pagedresults_state;
 958         ps->ps_size = size;
 959         op->o_pagedresults_state = ps;
 960
 961         /* NOTE: according to RFC 2696 3.:
 962
 963     If the page size is greater than or equal to the sizeLimit value, the
 964     server should ignore the control as the request can be satisfied in a
 965     single page.
 966
 967          * NOTE: this assumes that the op->ors_slimit be set
 968          * before the controls are parsed.
 969          */
 970
 971         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 972                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 973
 974         } else if ( ctrl->ldctl_iscritical ) {
 975                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 976
 977         } else {
 978                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 979         }
 980
 981 done:;
 982         (void)ber_free( ber, 1 );
 983         return rc;
 984 }
 985
 986 #ifdef LDAP_DEVEL
 987 static int parseSortedResults (
 988         Operation *op,
 989         SlapReply *rs,
 990         LDAPControl *ctrl )
 991 {
 992         int             rc = LDAP_SUCCESS;
 993
 994         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
 995                 rs->sr_text = "sorted results control specified multiple times";
 996                 return LDAP_PROTOCOL_ERROR;
 997         }
 998
 999         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1000                 rs->sr_text = "sorted results control value is empty (or absent)";
1001                 return LDAP_PROTOCOL_ERROR;
1002         }
1003
1004         /* blow off parsing the value */
1005
1006         op->o_sortedresults = ctrl->ldctl_iscritical
1007                 ? SLAP_CONTROL_CRITICAL
1008                 : SLAP_CONTROL_NONCRITICAL;
1009
1010         return rc;
1011 }
1012 #endif
1013
1014 static int parseAssert (
1015         Operation *op,
1016         SlapReply *rs,
1017         LDAPControl *ctrl )
1018 {
1019         BerElement      *ber;
1020         struct berval   fstr = BER_BVNULL;
1021         const char *err_msg = "";
1022
1023         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1024                 rs->sr_text = "assert control specified multiple times";
1025                 return LDAP_PROTOCOL_ERROR;
1026         }
1027
1028         if ( ctrl->ldctl_value.bv_len == 0 ) {
1029                 rs->sr_text = "assert control value is empty (or absent)";
1030                 return LDAP_PROTOCOL_ERROR;
1031         }
1032
1033         ber = ber_init( &(ctrl->ldctl_value) );
1034         if (ber == NULL) {
1035                 rs->sr_text = "assert control: internal error";
1036                 return LDAP_OTHER;
1037         }
1038
1039         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
1040
1041         if( rs->sr_err != LDAP_SUCCESS ) {
1042                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1043                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1044                         send_ldap_disconnect( op, rs );
1045                         rs->sr_err = SLAPD_DISCONNECT;
1046                 } else {
1047                         send_ldap_result( op, rs );
1048                 }
1049                 if( op->o_assertion != NULL ) {
1050                         filter_free_x( op, op->o_assertion );
1051                 }
1052                 return rs->sr_err;
1053         }
1054
1055 #ifdef LDAP_DEBUG
1056         filter2bv_x( op, op->o_assertion, &fstr );
1057
1058         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1059                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1060         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1061 #endif
1062
1063         op->o_assert = ctrl->ldctl_iscritical
1064                 ? SLAP_CONTROL_CRITICAL
1065                 : SLAP_CONTROL_NONCRITICAL;
1066
1067         rs->sr_err = LDAP_SUCCESS;
1068         return LDAP_SUCCESS;
1069 }
1070
1071 static int parsePreRead (
1072         Operation *op,
1073         SlapReply *rs,
1074         LDAPControl *ctrl )
1075 {
1076         ber_len_t siz, off, i;
1077         AttributeName *an = NULL;
1078         BerElement      *ber;
1079
1080         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1081                 rs->sr_text = "preread control specified multiple times";
1082                 return LDAP_PROTOCOL_ERROR;
1083         }
1084
1085         if ( ctrl->ldctl_value.bv_len == 0 ) {
1086                 rs->sr_text = "preread control value is empty (or absent)";
1087                 return LDAP_PROTOCOL_ERROR;
1088         }
1089
1090         ber = ber_init( &(ctrl->ldctl_value) );
1091         if (ber == NULL) {
1092                 rs->sr_text = "preread control: internal error";
1093                 return LDAP_OTHER;
1094         }
1095
1096         siz = sizeof( AttributeName );
1097         off = offsetof( AttributeName, an_name );
1098         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1099                 rs->sr_text = "preread control: decoding error";
1100                 return LDAP_PROTOCOL_ERROR;
1101         }
1102
1103         for( i=0; i<siz; i++ ) {
1104                 int             rc = LDAP_SUCCESS;
1105                 const char      *dummy = NULL;
1106
1107                 an[i].an_desc = NULL;
1108                 an[i].an_oc = NULL;
1109                 an[i].an_oc_exclude = 0;
1110                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1111                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1112                         rs->sr_text = dummy
1113                                 ? dummy
1114                                 : "postread control: unknown attributeType";
1115                         return rc;
1116                 }
1117         }
1118
1119         op->o_preread = ctrl->ldctl_iscritical
1120                 ? SLAP_CONTROL_CRITICAL
1121                 : SLAP_CONTROL_NONCRITICAL;
1122
1123         op->o_preread_attrs = an;
1124
1125         rs->sr_err = LDAP_SUCCESS;
1126         return LDAP_SUCCESS;
1127 }
1128
1129 static int parsePostRead (
1130         Operation *op,
1131         SlapReply *rs,
1132         LDAPControl *ctrl )
1133 {
1134         ber_len_t siz, off, i;
1135         AttributeName *an = NULL;
1136         BerElement      *ber;
1137
1138         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1139                 rs->sr_text = "postread control specified multiple times";
1140                 return LDAP_PROTOCOL_ERROR;
1141         }
1142
1143         if ( ctrl->ldctl_value.bv_len == 0 ) {
1144                 rs->sr_text = "postread control value is empty (or absent)";
1145                 return LDAP_PROTOCOL_ERROR;
1146         }
1147
1148         ber = ber_init( &(ctrl->ldctl_value) );
1149         if (ber == NULL) {
1150                 rs->sr_text = "postread control: internal error";
1151                 return LDAP_OTHER;
1152         }
1153
1154         siz = sizeof( AttributeName );
1155         off = offsetof( AttributeName, an_name );
1156         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1157                 rs->sr_text = "postread control: decoding error";
1158                 return LDAP_PROTOCOL_ERROR;
1159         }
1160
1161         for( i=0; i<siz; i++ ) {
1162                 int             rc = LDAP_SUCCESS;
1163                 const char      *dummy = NULL;
1164
1165                 an[i].an_desc = NULL;
1166                 an[i].an_oc = NULL;
1167                 an[i].an_oc_exclude = 0;
1168                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1169                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1170                         rs->sr_text = dummy
1171                                 ? dummy
1172                                 : "postread control: unknown attributeType";
1173                         return rc;
1174                 }
1175         }
1176
1177         op->o_postread = ctrl->ldctl_iscritical
1178                 ? SLAP_CONTROL_CRITICAL
1179                 : SLAP_CONTROL_NONCRITICAL;
1180
1181         op->o_postread_attrs = an;
1182
1183         rs->sr_err = LDAP_SUCCESS;
1184         return LDAP_SUCCESS;
1185 }
1186
1187 int parseValuesReturnFilter (
1188         Operation *op,
1189         SlapReply *rs,
1190         LDAPControl *ctrl )
1191 {
1192         BerElement      *ber;
1193         struct berval   fstr = BER_BVNULL;
1194         const char *err_msg = "";
1195
1196         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1197                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1198                 return LDAP_PROTOCOL_ERROR;
1199         }
1200
1201         if ( ctrl->ldctl_value.bv_len == 0 ) {
1202                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1203                 return LDAP_PROTOCOL_ERROR;
1204         }
1205
1206         ber = ber_init( &(ctrl->ldctl_value) );
1207         if (ber == NULL) {
1208                 rs->sr_text = "internal error";
1209                 return LDAP_OTHER;
1210         }
1211
1212         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1213
1214         if( rs->sr_err != LDAP_SUCCESS ) {
1215                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1216                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1217                         send_ldap_disconnect( op, rs );
1218                         rs->sr_err = SLAPD_DISCONNECT;
1219                 } else {
1220                         send_ldap_result( op, rs );
1221                 }
1222                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1223         }
1224 #ifdef LDAP_DEBUG
1225         else {
1226                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1227         }
1228
1229         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1230                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1231         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1232 #endif
1233
1234         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1235                 ? SLAP_CONTROL_CRITICAL
1236                 : SLAP_CONTROL_NONCRITICAL;
1237
1238         rs->sr_err = LDAP_SUCCESS;
1239         return LDAP_SUCCESS;
1240 }
1241
1242 #ifdef LDAP_CONTROL_SUBENTRIES
1243 static int parseSubentries (
1244         Operation *op,
1245         SlapReply *rs,
1246         LDAPControl *ctrl )
1247 {
1248         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1249                 rs->sr_text = "subentries control specified multiple times";
1250                 return LDAP_PROTOCOL_ERROR;
1251         }
1252
1253         /* FIXME: should use BER library */
1254         if( ( ctrl->ldctl_value.bv_len != 3 )
1255                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1256                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1257         {
1258                 rs->sr_text = "subentries control value encoding is bogus";
1259                 return LDAP_PROTOCOL_ERROR;
1260         }
1261
1262         op->o_subentries = ctrl->ldctl_iscritical
1263                 ? SLAP_CONTROL_CRITICAL
1264                 : SLAP_CONTROL_NONCRITICAL;
1265
1266         if (ctrl->ldctl_value.bv_val[2]) {
1267                 set_subentries_visibility( op );
1268         }
1269
1270         return LDAP_SUCCESS;
1271 }
1272 #endif
1273
1274 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1275 static int parsePermissiveModify (
1276         Operation *op,
1277         SlapReply *rs,
1278         LDAPControl *ctrl )
1279 {
1280         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1281                 rs->sr_text = "permissiveModify control specified multiple times";
1282                 return LDAP_PROTOCOL_ERROR;
1283         }
1284
1285         if ( ctrl->ldctl_value.bv_len ) {
1286                 rs->sr_text = "permissiveModify control value not empty";
1287                 return LDAP_PROTOCOL_ERROR;
1288         }
1289
1290         op->o_permissive_modify = ctrl->ldctl_iscritical
1291                 ? SLAP_CONTROL_CRITICAL
1292                 : SLAP_CONTROL_NONCRITICAL;
1293
1294         return LDAP_SUCCESS;
1295 }
1296 #endif
1297
1298 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1299 static int parseDomainScope (
1300         Operation *op,
1301         SlapReply *rs,
1302         LDAPControl *ctrl )
1303 {
1304         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1305                 rs->sr_text = "domainScope control specified multiple times";
1306                 return LDAP_PROTOCOL_ERROR;
1307         }
1308
1309         if ( ctrl->ldctl_value.bv_len ) {
1310                 rs->sr_text = "domainScope control value not empty";
1311                 return LDAP_PROTOCOL_ERROR;
1312         }
1313
1314         op->o_domain_scope = ctrl->ldctl_iscritical
1315                 ? SLAP_CONTROL_CRITICAL
1316                 : SLAP_CONTROL_NONCRITICAL;
1317
1318         return LDAP_SUCCESS;
1319 }
1320 #endif
1321
1322 #ifdef LDAP_CONTROL_X_TREE_DELETE
1323 static int parseTreeDelete (
1324         Operation *op,
1325         SlapReply *rs,
1326         LDAPControl *ctrl )
1327 {
1328         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1329                 rs->sr_text = "treeDelete control specified multiple times";
1330                 return LDAP_PROTOCOL_ERROR;
1331         }
1332
1333         if ( ctrl->ldctl_value.bv_len ) {
1334                 rs->sr_text = "treeDelete control value not empty";
1335                 return LDAP_PROTOCOL_ERROR;
1336         }
1337
1338         op->o_tree_delete = ctrl->ldctl_iscritical
1339                 ? SLAP_CONTROL_CRITICAL
1340                 : SLAP_CONTROL_NONCRITICAL;
1341
1342         return LDAP_SUCCESS;
1343 }
1344 #endif
1345
1346 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
1347 static int parseSearchOptions (
1348         Operation *op,
1349         SlapReply *rs,
1350         LDAPControl *ctrl )
1351 {
1352         BerElement *ber;
1353         ber_int_t search_flags;
1354         ber_tag_t tag;
1355
1356         if ( ctrl->ldctl_value.bv_len == 0 ) {
1357                 rs->sr_text = "searchOptions control value not empty";
1358                 return LDAP_PROTOCOL_ERROR;
1359         }
1360
1361         ber = ber_init( &ctrl->ldctl_value );
1362         if( ber == NULL ) {
1363                 rs->sr_text = "internal error";
1364                 return LDAP_OTHER;
1365         }
1366
1367         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1368                 rs->sr_text = "searchOptions control decoding error";
1369                 return LDAP_PROTOCOL_ERROR;
1370         }
1371
1372         (void) ber_free( ber, 1 );
1373
1374         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1375                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1376                         rs->sr_text = "searchOptions control specified multiple times "
1377                                 "or with domainScope control";
1378                         return LDAP_PROTOCOL_ERROR;
1379                 }
1380
1381                 op->o_domain_scope = ctrl->ldctl_iscritical
1382                         ? SLAP_CONTROL_CRITICAL
1383                         : SLAP_CONTROL_NONCRITICAL;
1384         }
1385
1386         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1387                 /* Other search flags not recognised so far,
1388                  * including:
1389                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1390                  */
1391                 rs->sr_text = "searchOptions contained unrecongized flag";
1392                 return LDAP_UNWILLING_TO_PERFORM;
1393         }
1394
1395         return LDAP_SUCCESS;
1396 }
1397 #endif
1398