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