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 void slap_free_ctrls(
 352         Operation *op,
 353         LDAPControl **ctrls )
 354 {
 355         int i;
 356
 357         for (i=0; ctrls[i]; i++) {
 358                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 359         }
 360         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 361 }
 362
 363 int get_ctrls(
 364         Operation *op,
 365         SlapReply *rs,
 366         int sendres )
 367 {
 368         int nctrls = 0;
 369         ber_tag_t tag;
 370         ber_len_t len;
 371         char *opaque;
 372         BerElement *ber = op->o_ber;
 373         struct slap_control *sc;
 374         struct berval bv;
 375
 376         len = ber_pvt_ber_remaining(ber);
 377
 378         if( len == 0) {
 379                 /* no controls */
 380                 rs->sr_err = LDAP_SUCCESS;
 381                 return rs->sr_err;
 382         }
 383
 384         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 385                 if( tag == LBER_ERROR ) {
 386                         rs->sr_err = SLAPD_DISCONNECT;
 387                         rs->sr_text = "unexpected data in PDU";
 388                 }
 389
 390                 goto return_results;
 391         }
 392
 393         Debug( LDAP_DEBUG_TRACE,
 394                 "=> get_ctrls\n", 0, 0, 0 );
 395
 396         if( op->o_protocol < LDAP_VERSION3 ) {
 397                 rs->sr_err = SLAPD_DISCONNECT;
 398                 rs->sr_text = "controls require LDAPv3";
 399                 goto return_results;
 400         }
 401
 402         /* one for first control, one for termination */
 403         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 404
 405 #if 0
 406         if( op->ctrls == NULL ) {
 407                 rs->sr_err = LDAP_NO_MEMORY;
 408                 rs->sr_text = "no memory";
 409                 goto return_results;
 410         }
 411 #endif
 412
 413         op->o_ctrls[nctrls] = NULL;
 414
 415         /* step through each element */
 416         for( tag = ber_first_element( ber, &len, &opaque );
 417                 tag != LBER_ERROR;
 418                 tag = ber_next_element( ber, &len, opaque ) )
 419         {
 420                 LDAPControl *c;
 421                 LDAPControl **tctrls;
 422
 423                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 424                 memset(c, 0, sizeof(LDAPControl));
 425
 426                 /* allocate pointer space for current controls (nctrls)
 427                  * + this control + extra NULL
 428                  */
 429                 tctrls = op->o_tmprealloc( op->o_ctrls,
 430                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 431
 432 #if 0
 433                 if( tctrls == NULL ) {
 434                         ch_free( c );
 435                         ldap_controls_free(op->o_ctrls);
 436                         op->o_ctrls = NULL;
 437
 438                         rs->sr_err = LDAP_NO_MEMORY;
 439                         rs->sr_text = "no memory";
 440                         goto return_results;
 441                 }
 442 #endif
 443                 op->o_ctrls = tctrls;
 444
 445                 op->o_ctrls[nctrls++] = c;
 446                 op->o_ctrls[nctrls] = NULL;
 447
 448                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 449                 c->ldctl_oid = bv.bv_val;
 450
 451                 if( tag == LBER_ERROR ) {
 452                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 453                                 0, 0, 0 );
 454
 455                         slap_free_ctrls( op, op->o_ctrls );
 456                         op->o_ctrls = NULL;
 457                         rs->sr_err = SLAPD_DISCONNECT;
 458                         rs->sr_text = "decoding controls error";
 459                         goto return_results;
 460
 461                 } else if( c->ldctl_oid == NULL ) {
 462                         Debug( LDAP_DEBUG_TRACE,
 463                                 "get_ctrls: conn %lu got emtpy OID.\n",
 464                                 op->o_connid, 0, 0 );
 465
 466                         slap_free_ctrls( op, op->o_ctrls );
 467                         op->o_ctrls = NULL;
 468                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 469                         rs->sr_text = "OID field is empty";
 470                         goto return_results;
 471                 }
 472
 473                 tag = ber_peek_tag( ber, &len );
 474
 475                 if( tag == LBER_BOOLEAN ) {
 476                         ber_int_t crit;
 477                         tag = ber_scanf( ber, "b", &crit );
 478
 479                         if( tag == LBER_ERROR ) {
 480                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 481                                         0, 0, 0 );
 482                                 slap_free_ctrls( op, op->o_ctrls );
 483                                 op->o_ctrls = NULL;
 484                                 rs->sr_err = SLAPD_DISCONNECT;
 485                                 rs->sr_text = "decoding controls error";
 486                                 goto return_results;
 487                         }
 488
 489                         c->ldctl_iscritical = (crit != 0);
 490                         tag = ber_peek_tag( ber, &len );
 491                 }
 492
 493                 if( tag == LBER_OCTETSTRING ) {
 494                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 495
 496                         if( tag == LBER_ERROR ) {
 497                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 498                                         "%s (%scritical): get value failed.\n",
 499                                         op->o_connid, c->ldctl_oid,
 500                                         c->ldctl_iscritical ? "" : "non" );
 501                                 slap_free_ctrls( op, op->o_ctrls );
 502                                 op->o_ctrls = NULL;
 503                                 rs->sr_err = SLAPD_DISCONNECT;
 504                                 rs->sr_text = "decoding controls error";
 505                                 goto return_results;
 506                         }
 507                 }
 508
 509                 Debug( LDAP_DEBUG_TRACE,
 510                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 511                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 512
 513                 sc = find_ctrl( c->ldctl_oid );
 514                 if( sc != NULL ) {
 515                         /* recognized control */
 516                         slap_mask_t tagmask;
 517                         switch( op->o_tag ) {
 518                         case LDAP_REQ_ADD:
 519                                 tagmask = SLAP_CTRL_ADD;
 520                                 break;
 521                         case LDAP_REQ_BIND:
 522                                 tagmask = SLAP_CTRL_BIND;
 523                                 break;
 524                         case LDAP_REQ_COMPARE:
 525                                 tagmask = SLAP_CTRL_COMPARE;
 526                                 break;
 527                         case LDAP_REQ_DELETE:
 528                                 tagmask = SLAP_CTRL_DELETE;
 529                                 break;
 530                         case LDAP_REQ_MODIFY:
 531                                 tagmask = SLAP_CTRL_MODIFY;
 532                                 break;
 533                         case LDAP_REQ_RENAME:
 534                                 tagmask = SLAP_CTRL_RENAME;
 535                                 break;
 536                         case LDAP_REQ_SEARCH:
 537                                 tagmask = SLAP_CTRL_SEARCH;
 538                                 break;
 539                         case LDAP_REQ_UNBIND:
 540                                 tagmask = SLAP_CTRL_UNBIND;
 541                                 break;
 542                         case LDAP_REQ_ABANDON:
 543                                 tagmask = SLAP_CTRL_ABANDON;
 544                                 break;
 545                         case LDAP_REQ_EXTENDED:
 546                                 tagmask=~0L;
 547                                 assert( op->ore_reqoid.bv_val != NULL );
 548                                 if( sc->sc_extendedops != NULL ) {
 549                                         int i;
 550                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 551                                                 if( strcmp( op->ore_reqoid.bv_val,
 552                                                         sc->sc_extendedops[i] ) == 0 )
 553                                                 {
 554                                                         tagmask=0L;
 555                                                         break;
 556                                                 }
 557                                         }
 558                                 }
 559                                 break;
 560                         default:
 561                                 rs->sr_err = LDAP_OTHER;
 562                                 rs->sr_text = "controls internal error";
 563                                 goto return_results;
 564                         }
 565
 566                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 567                                 /* available extension */
 568                                 int     rc;
 569
 570                                 if( !sc->sc_parse ) {
 571                                         rs->sr_err = LDAP_OTHER;
 572                                         rs->sr_text = "not yet implemented";
 573                                         goto return_results;
 574                                 }
 575
 576                                 rc = sc->sc_parse( op, rs, c );
 577                                 if ( rc ) {
 578                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 579                                         rs->sr_err = rc;
 580                                         goto return_results;
 581                                 }
 582
 583                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 584                                         /* kludge to disable backend_control() check */
 585                                         c->ldctl_iscritical = 0;
 586
 587                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 588                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 589                                 {
 590                                         /* kludge to disable backend_control() check */
 591                                         c->ldctl_iscritical = 0;
 592                                 }
 593
 594                         } else if( c->ldctl_iscritical ) {
 595                                 /* unavailable CRITICAL control */
 596                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 597                                 rs->sr_text = "critical extension is unavailable";
 598                                 goto return_results;
 599                         }
 600
 601                 } else if( c->ldctl_iscritical ) {
 602                         /* unrecognized CRITICAL control */
 603                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 604                         rs->sr_text = "critical extension is not recognized";
 605                         goto return_results;
 606                 }
 607 next_ctrl:;
 608         }
 609
 610 return_results:
 611         Debug( LDAP_DEBUG_TRACE,
 612                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 613                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 614
 615         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 616                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 617                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 618                         send_ldap_disconnect( op, rs );
 619                         rs->sr_err = SLAPD_DISCONNECT;
 620                 } else {
 621                         send_ldap_result( op, rs );
 622                 }
 623         }
 624
 625         return rs->sr_err;
 626 }
 627
 628 static int parseModifyIncrement (
 629         Operation *op,
 630         SlapReply *rs,
 631         LDAPControl *ctrl )
 632 {
 633 #if 0
 634         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 635                 rs->sr_text = "modifyIncrement control specified multiple times";
 636                 return LDAP_PROTOCOL_ERROR;
 637         }
 638 #endif
 639
 640         if ( ctrl->ldctl_value.bv_len ) {
 641                 rs->sr_text = "modifyIncrement control value not empty";
 642                 return LDAP_PROTOCOL_ERROR;
 643         }
 644
 645 #if 0
 646         op->o_modifyIncrement = ctrl->ldctl_iscritical
 647                 ? SLAP_CONTROL_CRITICAL
 648                 : SLAP_CONTROL_NONCRITICAL;
 649 #endif
 650
 651         return LDAP_SUCCESS;
 652 }
 653
 654 static int parseManageDSAit (
 655         Operation *op,
 656         SlapReply *rs,
 657         LDAPControl *ctrl )
 658 {
 659         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 660                 rs->sr_text = "manageDSAit control specified multiple times";
 661                 return LDAP_PROTOCOL_ERROR;
 662         }
 663
 664         if ( ctrl->ldctl_value.bv_len ) {
 665                 rs->sr_text = "manageDSAit control value not empty";
 666                 return LDAP_PROTOCOL_ERROR;
 667         }
 668
 669         op->o_managedsait = ctrl->ldctl_iscritical
 670                 ? SLAP_CONTROL_CRITICAL
 671                 : SLAP_CONTROL_NONCRITICAL;
 672
 673         return LDAP_SUCCESS;
 674 }
 675
 676 static int parseProxyAuthz (
 677         Operation *op,
 678         SlapReply *rs,
 679         LDAPControl *ctrl )
 680 {
 681         int             rc;
 682         struct berval   dn = BER_BVNULL;
 683
 684         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 685                 rs->sr_text = "proxy authorization control specified multiple times";
 686                 return LDAP_PROTOCOL_ERROR;
 687         }
 688
 689         op->o_proxy_authz = ctrl->ldctl_iscritical
 690                 ? SLAP_CONTROL_CRITICAL
 691                 : SLAP_CONTROL_NONCRITICAL;
 692
 693         Debug( LDAP_DEBUG_ARGS,
 694                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 695                 op->o_connid,
 696                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 697                 0 );
 698
 699         if( ctrl->ldctl_value.bv_len == 0 ) {
 700                 Debug( LDAP_DEBUG_TRACE,
 701                         "parseProxyAuthz: conn=%lu anonymous\n",
 702                         op->o_connid, 0, 0 );
 703
 704                 /* anonymous */
 705                 free( op->o_dn.bv_val );
 706                 op->o_dn.bv_len = 0;
 707                 op->o_dn.bv_val = ch_strdup( "" );
 708
 709                 free( op->o_ndn.bv_val );
 710                 op->o_ndn.bv_len = 0;
 711                 op->o_ndn.bv_val = ch_strdup( "" );
 712
 713                 return LDAP_SUCCESS;
 714         }
 715
 716         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 717                         NULL, &dn, SLAP_GETDN_AUTHZID );
 718
 719         /* FIXME: empty DN in proxyAuthz control should be legal... */
 720         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 721                 if ( dn.bv_val ) {
 722                         ch_free( dn.bv_val );
 723                 }
 724                 rs->sr_text = "authzId mapping failed";
 725                 return LDAP_PROXY_AUTHZ_FAILURE;
 726         }
 727
 728         Debug( LDAP_DEBUG_TRACE,
 729                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 730                 op->o_connid,
 731                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 732
 733         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 734
 735         if( rc ) {
 736                 ch_free( dn.bv_val );
 737                 rs->sr_text = "not authorized to assume identity";
 738                 return LDAP_PROXY_AUTHZ_FAILURE;
 739         }
 740
 741         ch_free( op->o_dn.bv_val );
 742         ch_free( op->o_ndn.bv_val );
 743
 744         op->o_dn.bv_val = NULL;
 745         op->o_ndn = dn;
 746
 747         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 748             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 749
 750         /*
 751          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 752          * from now on op->o_dn is normalized
 753          */
 754         ber_dupbv( &op->o_dn, &dn );
 755
 756         return LDAP_SUCCESS;
 757 }
 758
 759 static int parseNoOp (
 760         Operation *op,
 761         SlapReply *rs,
 762         LDAPControl *ctrl )
 763 {
 764         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 765                 rs->sr_text = "noop control specified multiple times";
 766                 return LDAP_PROTOCOL_ERROR;
 767         }
 768
 769         if ( ctrl->ldctl_value.bv_len ) {
 770                 rs->sr_text = "noop control value not empty";
 771                 return LDAP_PROTOCOL_ERROR;
 772         }
 773
 774         op->o_noop = ctrl->ldctl_iscritical
 775                 ? SLAP_CONTROL_CRITICAL
 776                 : SLAP_CONTROL_NONCRITICAL;
 777
 778         return LDAP_SUCCESS;
 779 }
 780
 781 static int parsePagedResults (
 782         Operation *op,
 783         SlapReply *rs,
 784         LDAPControl *ctrl )
 785 {
 786         int             rc = LDAP_SUCCESS;
 787         ber_tag_t       tag;
 788         ber_int_t       size;
 789         BerElement      *ber;
 790         struct berval   cookie = BER_BVNULL;
 791         PagedResultsState       *ps;
 792
 793         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 794                 rs->sr_text = "paged results control specified multiple times";
 795                 return LDAP_PROTOCOL_ERROR;
 796         }
 797
 798 #if 0   /* DELETE ME */
 799         if ( op->o_sync != SLAP_CONTROL_NONE ) {
 800                 rs->sr_text = "paged results control specified with sync control";
 801                 return LDAP_PROTOCOL_ERROR;
 802         }
 803 #endif
 804
 805         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 806                 rs->sr_text = "paged results control value is empty (or absent)";
 807                 return LDAP_PROTOCOL_ERROR;
 808         }
 809
 810         /* Parse the control value
 811          *      realSearchControlValue ::= SEQUENCE {
 812          *              size    INTEGER (0..maxInt),
 813          *                              -- requested page size from client
 814          *                              -- result set size estimate from server
 815          *              cookie  OCTET STRING
 816          * }
 817          */
 818         ber = ber_init( &ctrl->ldctl_value );
 819         if ( ber == NULL ) {
 820                 rs->sr_text = "internal error";
 821                 return LDAP_OTHER;
 822         }
 823
 824         tag = ber_scanf( ber, "{im}", &size, &cookie );
 825
 826         if ( tag == LBER_ERROR ) {
 827                 rs->sr_text = "paged results control could not be decoded";
 828                 rc = LDAP_PROTOCOL_ERROR;
 829                 goto done;
 830         }
 831
 832         if ( size < 0 ) {
 833                 rs->sr_text = "paged results control size invalid";
 834                 rc = LDAP_PROTOCOL_ERROR;
 835                 goto done;
 836         }
 837
 838 #if 0
 839         /* defer cookie decoding/checks to backend... */
 840         if ( cookie.bv_len ) {
 841                 PagedResultsCookie reqcookie;
 842                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 843                         /* bad cookie */
 844                         rs->sr_text = "paged results cookie is invalid";
 845                         rc = LDAP_PROTOCOL_ERROR;
 846                         goto done;
 847                 }
 848
 849                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 850
 851                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 852                         /* bad cookie */
 853                         rs->sr_text = "paged results cookie is invalid";
 854                         rc = LDAP_PROTOCOL_ERROR;
 855                         goto done;
 856
 857                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 858                         rs->sr_text = "paged results cookie is invalid or old";
 859                         rc = LDAP_UNWILLING_TO_PERFORM;
 860                         goto done;
 861                 }
 862
 863         } else {
 864                 /* Initial request.  Initialize state. */
 865 #if 0
 866                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 867                         /* There's another pagedResults control on the
 868                          * same connection; reject new pagedResults controls
 869                          * (allowed by RFC2696) */
 870                         rs->sr_text = "paged results cookie unavailable; try later";
 871                         rc = LDAP_UNWILLING_TO_PERFORM;
 872                         goto done;
 873                 }
 874 #endif
 875                 op->o_pagedresults_state.ps_cookie = 0;
 876                 op->o_pagedresults_state.ps_count = 0;
 877         }
 878 #endif
 879
 880         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 881         *ps = op->o_conn->c_pagedresults_state;
 882         ps->ps_size = size;
 883         op->o_pagedresults_state = ps;
 884
 885         /* NOTE: according to RFC 2696 3.:
 886
 887     If the page size is greater than or equal to the sizeLimit value, the
 888     server should ignore the control as the request can be satisfied in a
 889     single page.
 890
 891          * NOTE: this assumes that the op->ors_slimit be set
 892          * before the controls are parsed.
 893          */
 894
 895         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 896                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 897
 898         } else if ( ctrl->ldctl_iscritical ) {
 899                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 900
 901         } else {
 902                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 903         }
 904
 905 done:;
 906         (void)ber_free( ber, 1 );
 907         return rc;
 908 }
 909
 910 static int parseAssert (
 911         Operation *op,
 912         SlapReply *rs,
 913         LDAPControl *ctrl )
 914 {
 915         BerElement      *ber;
 916         struct berval   fstr = BER_BVNULL;
 917         const char *err_msg = "";
 918
 919         if ( op->o_assert != SLAP_CONTROL_NONE ) {
 920                 rs->sr_text = "assert control specified multiple times";
 921                 return LDAP_PROTOCOL_ERROR;
 922         }
 923
 924         if ( ctrl->ldctl_value.bv_len == 0 ) {
 925                 rs->sr_text = "assert control value is empty (or absent)";
 926                 return LDAP_PROTOCOL_ERROR;
 927         }
 928
 929         ber = ber_init( &(ctrl->ldctl_value) );
 930         if (ber == NULL) {
 931                 rs->sr_text = "assert control: internal error";
 932                 return LDAP_OTHER;
 933         }
 934
 935         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
 936
 937         if( rs->sr_err != LDAP_SUCCESS ) {
 938                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 939                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 940                         send_ldap_disconnect( op, rs );
 941                         rs->sr_err = SLAPD_DISCONNECT;
 942                 } else {
 943                         send_ldap_result( op, rs );
 944                 }
 945                 if( op->o_assertion != NULL ) {
 946                         filter_free_x( op, op->o_assertion );
 947                 }
 948                 return rs->sr_err;
 949         }
 950
 951 #ifdef LDAP_DEBUG
 952         filter2bv_x( op, op->o_assertion, &fstr );
 953
 954         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 955                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 956         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 957 #endif
 958
 959         op->o_assert = ctrl->ldctl_iscritical
 960                 ? SLAP_CONTROL_CRITICAL
 961                 : SLAP_CONTROL_NONCRITICAL;
 962
 963         rs->sr_err = LDAP_SUCCESS;
 964         return LDAP_SUCCESS;
 965 }
 966
 967 static int parsePreRead (
 968         Operation *op,
 969         SlapReply *rs,
 970         LDAPControl *ctrl )
 971 {
 972         ber_len_t siz, off, i;
 973         AttributeName *an = NULL;
 974         BerElement      *ber;
 975
 976         if ( op->o_preread != SLAP_CONTROL_NONE ) {
 977                 rs->sr_text = "preread control specified multiple times";
 978                 return LDAP_PROTOCOL_ERROR;
 979         }
 980
 981         if ( ctrl->ldctl_value.bv_len == 0 ) {
 982                 rs->sr_text = "preread control value is empty (or absent)";
 983                 return LDAP_PROTOCOL_ERROR;
 984         }
 985
 986         ber = ber_init( &(ctrl->ldctl_value) );
 987         if (ber == NULL) {
 988                 rs->sr_text = "preread control: internal error";
 989                 return LDAP_OTHER;
 990         }
 991
 992         siz = sizeof( AttributeName );
 993         off = offsetof( AttributeName, an_name );
 994         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
 995                 rs->sr_text = "preread control: decoding error";
 996                 return LDAP_PROTOCOL_ERROR;
 997         }
 998
 999         for( i=0; i<siz; i++ ) {
1000                 int             rc = LDAP_SUCCESS;
1001                 const char      *dummy = NULL;
1002
1003                 an[i].an_desc = NULL;
1004                 an[i].an_oc = NULL;
1005                 an[i].an_oc_exclude = 0;
1006                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1007                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1008                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1009                         return rc;
1010                 }
1011         }
1012
1013         op->o_preread = ctrl->ldctl_iscritical
1014                 ? SLAP_CONTROL_CRITICAL
1015                 : SLAP_CONTROL_NONCRITICAL;
1016
1017         op->o_preread_attrs = an;
1018
1019         rs->sr_err = LDAP_SUCCESS;
1020         return LDAP_SUCCESS;
1021 }
1022
1023 static int parsePostRead (
1024         Operation *op,
1025         SlapReply *rs,
1026         LDAPControl *ctrl )
1027 {
1028         ber_len_t siz, off, i;
1029         AttributeName *an = NULL;
1030         BerElement      *ber;
1031
1032         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1033                 rs->sr_text = "postread control specified multiple times";
1034                 return LDAP_PROTOCOL_ERROR;
1035         }
1036
1037         if ( ctrl->ldctl_value.bv_len == 0 ) {
1038                 rs->sr_text = "postread control value is empty (or absent)";
1039                 return LDAP_PROTOCOL_ERROR;
1040         }
1041
1042         ber = ber_init( &(ctrl->ldctl_value) );
1043         if (ber == NULL) {
1044                 rs->sr_text = "postread control: internal error";
1045                 return LDAP_OTHER;
1046         }
1047
1048         siz = sizeof( AttributeName );
1049         off = offsetof( AttributeName, an_name );
1050         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1051                 rs->sr_text = "postread control: decoding error";
1052                 return LDAP_PROTOCOL_ERROR;
1053         }
1054
1055         for( i=0; i<siz; i++ ) {
1056                 int             rc = LDAP_SUCCESS;
1057                 const char      *dummy = NULL;
1058
1059                 an[i].an_desc = NULL;
1060                 an[i].an_oc = NULL;
1061                 an[i].an_oc_exclude = 0;
1062                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1063                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1064                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1065                         return rc;
1066                 }
1067         }
1068
1069         op->o_postread = ctrl->ldctl_iscritical
1070                 ? SLAP_CONTROL_CRITICAL
1071                 : SLAP_CONTROL_NONCRITICAL;
1072
1073         op->o_postread_attrs = an;
1074
1075         rs->sr_err = LDAP_SUCCESS;
1076         return LDAP_SUCCESS;
1077 }
1078
1079 int parseValuesReturnFilter (
1080         Operation *op,
1081         SlapReply *rs,
1082         LDAPControl *ctrl )
1083 {
1084         BerElement      *ber;
1085         struct berval   fstr = BER_BVNULL;
1086         const char *err_msg = "";
1087
1088         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1089                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1090                 return LDAP_PROTOCOL_ERROR;
1091         }
1092
1093         if ( ctrl->ldctl_value.bv_len == 0 ) {
1094                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1095                 return LDAP_PROTOCOL_ERROR;
1096         }
1097
1098         ber = ber_init( &(ctrl->ldctl_value) );
1099         if (ber == NULL) {
1100                 rs->sr_text = "internal error";
1101                 return LDAP_OTHER;
1102         }
1103
1104         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1105
1106         if( rs->sr_err != LDAP_SUCCESS ) {
1107                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1108                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1109                         send_ldap_disconnect( op, rs );
1110                         rs->sr_err = SLAPD_DISCONNECT;
1111                 } else {
1112                         send_ldap_result( op, rs );
1113                 }
1114                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1115         }
1116 #ifdef LDAP_DEBUG
1117         else {
1118                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1119         }
1120
1121         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1122                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1123         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1124 #endif
1125
1126         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1127                 ? SLAP_CONTROL_CRITICAL
1128                 : SLAP_CONTROL_NONCRITICAL;
1129
1130         rs->sr_err = LDAP_SUCCESS;
1131         return LDAP_SUCCESS;
1132 }
1133
1134 #ifdef LDAP_CONTROL_SUBENTRIES
1135 static int parseSubentries (
1136         Operation *op,
1137         SlapReply *rs,
1138         LDAPControl *ctrl )
1139 {
1140         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1141                 rs->sr_text = "subentries control specified multiple times";
1142                 return LDAP_PROTOCOL_ERROR;
1143         }
1144
1145         /* FIXME: should use BER library */
1146         if( ( ctrl->ldctl_value.bv_len != 3 )
1147                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1148                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1149         {
1150                 rs->sr_text = "subentries control value encoding is bogus";
1151                 return LDAP_PROTOCOL_ERROR;
1152         }
1153
1154         op->o_subentries = ctrl->ldctl_iscritical
1155                 ? SLAP_CONTROL_CRITICAL
1156                 : SLAP_CONTROL_NONCRITICAL;
1157
1158         if ( (void *)(ctrl->ldctl_value.bv_val[2] != 0x00))
1159                 set_subentries_visibility( op );
1160
1161         return LDAP_SUCCESS;
1162 }
1163 #endif
1164
1165 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1166 static int parsePermissiveModify (
1167         Operation *op,
1168         SlapReply *rs,
1169         LDAPControl *ctrl )
1170 {
1171         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1172                 rs->sr_text = "permissiveModify control specified multiple times";
1173                 return LDAP_PROTOCOL_ERROR;
1174         }
1175
1176         if ( ctrl->ldctl_value.bv_len ) {
1177                 rs->sr_text = "permissiveModify control value not empty";
1178                 return LDAP_PROTOCOL_ERROR;
1179         }
1180
1181         op->o_permissive_modify = ctrl->ldctl_iscritical
1182                 ? SLAP_CONTROL_CRITICAL
1183                 : SLAP_CONTROL_NONCRITICAL;
1184
1185         return LDAP_SUCCESS;
1186 }
1187 #endif
1188
1189 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1190 static int parseDomainScope (
1191         Operation *op,
1192         SlapReply *rs,
1193         LDAPControl *ctrl )
1194 {
1195         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1196                 rs->sr_text = "domainScope control specified multiple times";
1197                 return LDAP_PROTOCOL_ERROR;
1198         }
1199
1200         if ( ctrl->ldctl_value.bv_len ) {
1201                 rs->sr_text = "domainScope control value not empty";
1202                 return LDAP_PROTOCOL_ERROR;
1203         }
1204
1205         op->o_domain_scope = ctrl->ldctl_iscritical
1206                 ? SLAP_CONTROL_CRITICAL
1207                 : SLAP_CONTROL_NONCRITICAL;
1208
1209         return LDAP_SUCCESS;
1210 }
1211 #endif
1212
1213 #ifdef LDAP_CONTROL_X_TREE_DELETE
1214 static int parseTreeDelete (
1215         Operation *op,
1216         SlapReply *rs,
1217         LDAPControl *ctrl )
1218 {
1219         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1220                 rs->sr_text = "treeDelete control specified multiple times";
1221                 return LDAP_PROTOCOL_ERROR;
1222         }
1223
1224         if ( ctrl->ldctl_value.bv_len ) {
1225                 rs->sr_text = "treeDelete control value not empty";
1226                 return LDAP_PROTOCOL_ERROR;
1227         }
1228
1229         op->o_tree_delete = ctrl->ldctl_iscritical
1230                 ? SLAP_CONTROL_CRITICAL
1231                 : SLAP_CONTROL_NONCRITICAL;
1232
1233         return LDAP_SUCCESS;
1234 }
1235 #endif
1236
1237 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1238 static int parseSearchOptions (
1239         Operation *op,
1240         SlapReply *rs,
1241         LDAPControl *ctrl )
1242 {
1243         BerElement *ber;
1244         ber_int_t search_flags;
1245
1246         if ( ctrl->ldctl_value.bv_len == 0 ) {
1247                 rs->sr_text = "searchOptions control value not empty";
1248                 return LDAP_PROTOCOL_ERROR;
1249         }
1250
1251         ber = ber_init( &ctrl->ldctl_value );
1252         if( ber == NULL ) {
1253                 rs->sr_text = "internal error";
1254                 return LDAP_OTHER;
1255         }
1256
1257         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1258                 rs->sr_text = "searchOptions control decoding error";
1259                 return LDAP_PROTOCOL_ERROR;
1260         }
1261
1262         (void) ber_free( ber, 1 );
1263
1264         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1265                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1266                         rs->sr_text = "searchOptions control specified multiple times "
1267                                 "or with domainScope control";
1268                         return LDAP_PROTOCOL_ERROR;
1269                 }
1270
1271                 op->o_domain_scope = ctrl->ldctl_iscritical
1272                         ? SLAP_CONTROL_CRITICAL
1273                         : SLAP_CONTROL_NONCRITICAL;
1274         }
1275
1276         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1277                 /* Other search flags not recognised so far */
1278                 rs->sr_text = "searchOptions contained unrecongized flag";
1279                 return LDAP_UNWILLING_TO_PERFORM;
1280         }
1281
1282         return LDAP_SUCCESS;
1283 }
1284 #endif
1285