git.sur5r.net Git - openldap/blob - servers/slapd/controls.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2005 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15
  16 #include "portable.h"
  17
  18 #include <stdio.h>
  19
  20 #include <ac/string.h>
  21 #include <ac/socket.h>
  22
  23 #include "slap.h"
  24
  25 #include "../../libraries/liblber/lber-int.h"
  26
  27 static SLAP_CTRL_PARSE_FN parseAssert;
  28 static SLAP_CTRL_PARSE_FN parsePreRead;
  29 static SLAP_CTRL_PARSE_FN parsePostRead;
  30 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  31 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  32 static SLAP_CTRL_PARSE_FN parseModifyIncrement;
  33 static SLAP_CTRL_PARSE_FN parseNoOp;
  34 static SLAP_CTRL_PARSE_FN parsePagedResults;
  35 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  36 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  37 static SLAP_CTRL_PARSE_FN parseDomainScope;
  38 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  39 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  40 static SLAP_CTRL_PARSE_FN parseSubentries;
  41
  42 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  43
  44 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  45 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  46
  47 struct slap_control_ids slap_cids;
  48
  49 struct slap_control {
  50         /* Control OID */
  51         char *sc_oid;
  52
  53         /* The controlID for this control */
  54         int sc_cid;
  55
  56         /* Operations supported by control */
  57         slap_mask_t sc_mask;
  58
  59         /* Extended operations supported by control */
  60         char **sc_extendedops;
  61
  62         /* Control parsing callback */
  63         SLAP_CTRL_PARSE_FN *sc_parse;
  64
  65         LDAP_SLIST_ENTRY(slap_control) sc_next;
  66 };
  67
  68 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  69         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  70
  71 /*
  72  * all known request control OIDs should be added to this list
  73  */
  74 /*
  75  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  76  * addresses an undefined control; this allows to safely test for
  77  * well known controls even if they are not registered, e.g. if
  78  * they get moved to modules.  An example is sc_LDAPsync, which
  79  * is implemented in the syncprov overlay and thus, if configured
  80  * as dynamic module, may not be registered.  One side effect is that
  81  * slap_known_controls[0] == NULL, so it should always be used
  82  * starting from 1.
  83  * FIXME: should we define the "undefined control" oid?
  84  */
  85 char *slap_known_controls[SLAP_MAX_CIDS+1];
  86 static int num_known_controls = 1;
  87
  88 static char *proxy_authz_extops[] = {
  89         LDAP_EXOP_MODIFY_PASSWD,
  90         LDAP_EXOP_X_WHO_AM_I,
  91         NULL
  92 };
  93
  94 static struct slap_control control_defs[] = {
  95         {  LDAP_CONTROL_ASSERT,
  96                 (int)offsetof(struct slap_control_ids, sc_assert),
  97                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
  98                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  99         { LDAP_CONTROL_PRE_READ,
 100                 (int)offsetof(struct slap_control_ids, sc_preRead),
 101                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 102                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 103         { LDAP_CONTROL_POST_READ,
 104                 (int)offsetof(struct slap_control_ids, sc_postRead),
 105                 SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 106                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 107         { LDAP_CONTROL_VALUESRETURNFILTER,
 108                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 109                 SLAP_CTRL_SEARCH, NULL,
 110                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 111         { LDAP_CONTROL_PAGEDRESULTS,
 112                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 113                 SLAP_CTRL_SEARCH, NULL,
 114                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 115 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 116         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 117                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 118                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 119                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 120 #endif
 121 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 122         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 123                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 124                 SLAP_CTRL_MODIFY, NULL,
 125                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 126 #endif
 127 #ifdef SLAP_CONTROL_X_TREE_DELETE
 128         { LDAP_CONTROL_X_TREE_DELETE,
 129                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 130                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE, NULL,
 131                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 132 #endif
 133 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
 134         { LDAP_CONTORL_X_SEARCH_OPTIONS,
 135                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 136                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 137                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 138 #endif
 139 #ifdef LDAP_CONTROL_SUBENTRIES
 140         { LDAP_CONTROL_SUBENTRIES,
 141                 (int)offsetof(struct slap_control_ids, sc_subentries),
 142                 SLAP_CTRL_SEARCH, NULL,
 143                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 144 #endif
 145         { LDAP_CONTROL_NOOP,
 146                 (int)offsetof(struct slap_control_ids, sc_noOp),
 147                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 148                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 149 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 150         { LDAP_CONTROL_MODIFY_INCREMENT,
 151                 (int)offsetof(struct slap_control_ids, sc_modifyIncrement),
 152                 SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
 153                 parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 154 #endif
 155         { LDAP_CONTROL_MANAGEDSAIT,
 156                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 157                 SLAP_CTRL_ACCESS, NULL,
 158                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 159         { LDAP_CONTROL_PROXY_AUTHZ,
 160                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 161                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
 162                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 163         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 164 };
 165
 166 /*
 167  * Register a supported control.
 168  *
 169  * This can be called by an OpenLDAP plugin or, indirectly, by a
 170  * SLAPI plugin calling slapi_register_supported_control().
 171  */
 172 int
 173 register_supported_control(const char *controloid,
 174         slap_mask_t controlmask,
 175         char **controlexops,
 176         SLAP_CTRL_PARSE_FN *controlparsefn,
 177         int *controlcid)
 178 {
 179         struct slap_control *sc;
 180         int i;
 181
 182         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 183                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 184                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 185                 SLAP_MAX_CIDS, 0, 0 );
 186                 return LDAP_OTHER;
 187         }
 188
 189         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 190
 191         /* sanity check - should never happen */
 192         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 193                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 194                         Debug( LDAP_DEBUG_ANY,
 195                                 "Control %s already registered.\n",
 196                                 controloid, 0, 0 );
 197                         return LDAP_PARAM_ERROR;
 198                 }
 199         }
 200
 201         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 202         if ( sc == NULL ) return LDAP_NO_MEMORY;
 203
 204         sc->sc_oid = ch_strdup( controloid );
 205         sc->sc_mask = controlmask;
 206         if ( controlexops != NULL ) {
 207                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 208                 if ( sc->sc_extendedops == NULL ) {
 209                         ch_free( sc );
 210                         return LDAP_NO_MEMORY;
 211                 }
 212         } else {
 213                 sc->sc_extendedops = NULL;
 214         }
 215         sc->sc_parse = controlparsefn;
 216
 217         if ( controlcid ) *controlcid = num_known_controls;
 218         sc->sc_cid = num_known_controls;
 219
 220         /* Update slap_known_controls, too. */
 221         slap_known_controls[num_known_controls-1] = sc->sc_oid;
 222         slap_known_controls[num_known_controls++] = NULL;
 223
 224         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 225         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 226         return LDAP_SUCCESS;
 227 }
 228
 229 /*
 230  * One-time initialization of internal controls.
 231  */
 232 int
 233 slap_controls_init( void )
 234 {
 235         int i, rc;
 236         struct slap_control *sc;
 237
 238         rc = LDAP_SUCCESS;
 239
 240         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 241                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 242                 rc = register_supported_control( control_defs[i].sc_oid,
 243                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 244                         control_defs[i].sc_parse, cid );
 245                 if ( rc != LDAP_SUCCESS ) break;
 246         }
 247
 248         return rc;
 249 }
 250
 251 /*
 252  * Free memory associated with list of supported controls.
 253  */
 254 void
 255 controls_destroy( void )
 256 {
 257         struct slap_control *sc;
 258
 259         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 260                 sc = LDAP_SLIST_FIRST(&controls_list);
 261                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 262
 263                 ch_free( sc->sc_oid );
 264                 if ( sc->sc_extendedops != NULL ) {
 265                         ldap_charray_free( sc->sc_extendedops );
 266                 }
 267                 ch_free( sc );
 268         }
 269 }
 270
 271 /*
 272  * Format the supportedControl attribute of the root DSE,
 273  * detailing which controls are supported by the directory
 274  * server.
 275  */
 276 int
 277 controls_root_dse_info( Entry *e )
 278 {
 279         AttributeDescription *ad_supportedControl
 280                 = slap_schema.si_ad_supportedControl;
 281         struct berval vals[2];
 282         struct slap_control *sc;
 283
 284         vals[1].bv_val = NULL;
 285         vals[1].bv_len = 0;
 286
 287         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 288                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 289
 290                 vals[0].bv_val = sc->sc_oid;
 291                 vals[0].bv_len = strlen( sc->sc_oid );
 292
 293                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 294                         return -1;
 295                 }
 296         }
 297
 298         return 0;
 299 }
 300
 301 /*
 302  * Return a list of OIDs and operation masks for supported
 303  * controls. Used by SLAPI.
 304  */
 305 int
 306 get_supported_controls(char ***ctrloidsp,
 307         slap_mask_t **ctrlmasks)
 308 {
 309         int i, n;
 310         char **oids;
 311         slap_mask_t *masks;
 312         int rc;
 313         struct slap_control *sc;
 314
 315         n = 0;
 316
 317         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 318                 n++;
 319         }
 320
 321         if ( n == 0 ) {
 322                 *ctrloidsp = NULL;
 323                 *ctrlmasks = NULL;
 324                 return LDAP_SUCCESS;
 325         }
 326
 327         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 328         if ( oids == NULL ) {
 329                 return LDAP_NO_MEMORY;
 330         }
 331         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 332         if  ( masks == NULL ) {
 333                 ch_free( oids );
 334                 return LDAP_NO_MEMORY;
 335         }
 336
 337         n = 0;
 338
 339         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 340                 oids[n] = ch_strdup( sc->sc_oid );
 341                 masks[n] = sc->sc_mask;
 342                 n++;
 343         }
 344         oids[n] = NULL;
 345         masks[n] = 0;
 346
 347         *ctrloidsp = oids;
 348         *ctrlmasks = masks;
 349
 350         return LDAP_SUCCESS;
 351 }
 352
 353 /*
 354  * Find a control given its OID.
 355  */
 356 static struct slap_control *
 357 find_ctrl( const char *oid )
 358 {
 359         struct slap_control *sc;
 360
 361         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 362                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 363                         return sc;
 364                 }
 365         }
 366
 367         return NULL;
 368 }
 369
 370 int
 371 slap_find_control_id(
 372         const char *oid,
 373         int *cid )
 374 {
 375         struct slap_control *ctrl = find_ctrl( oid );
 376         if ( ctrl ) {
 377                 if ( cid ) *cid = ctrl->sc_cid;
 378                 return LDAP_SUCCESS;
 379         }
 380         return LDAP_CONTROL_NOT_FOUND;
 381 }
 382
 383 int
 384 slap_global_control( Operation *op, const char *oid )
 385 {
 386         struct slap_control *ctrl = find_ctrl( oid );
 387
 388         if ( ctrl == NULL ) {
 389                 /* should not be reachable */
 390                 Debug( LDAP_DEBUG_ANY,
 391                         "slap_global_control: unrecognized control: %s\n",
 392                         oid, 0, 0 );
 393                 assert( 0 );
 394                 return 0;
 395         }
 396
 397         if ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) return 1;
 398
 399         if (( op->o_tag & LDAP_REQ_SEARCH ) &&
 400                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ))
 401         {
 402                 return 1;
 403         }
 404
 405         Debug( LDAP_DEBUG_ANY,
 406                 "slap_global_control: unavailable control: %s\n",
 407                 oid, 0, 0 );
 408         return 0;
 409 }
 410
 411 void slap_free_ctrls(
 412         Operation *op,
 413         LDAPControl **ctrls )
 414 {
 415         int i;
 416
 417         for (i=0; ctrls[i]; i++) {
 418                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 419         }
 420         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 421 }
 422
 423 int get_ctrls(
 424         Operation *op,
 425         SlapReply *rs,
 426         int sendres )
 427 {
 428         int nctrls = 0;
 429         ber_tag_t tag;
 430         ber_len_t len;
 431         char *opaque;
 432         BerElement *ber = op->o_ber;
 433         struct slap_control *sc;
 434         struct berval bv;
 435
 436         len = ber_pvt_ber_remaining(ber);
 437
 438         if( len == 0) {
 439                 /* no controls */
 440                 rs->sr_err = LDAP_SUCCESS;
 441                 return rs->sr_err;
 442         }
 443
 444         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 445                 if( tag == LBER_ERROR ) {
 446                         rs->sr_err = SLAPD_DISCONNECT;
 447                         rs->sr_text = "unexpected data in PDU";
 448                 }
 449
 450                 goto return_results;
 451         }
 452
 453         Debug( LDAP_DEBUG_TRACE,
 454                 "=> get_ctrls\n", 0, 0, 0 );
 455
 456         if( op->o_protocol < LDAP_VERSION3 ) {
 457                 rs->sr_err = SLAPD_DISCONNECT;
 458                 rs->sr_text = "controls require LDAPv3";
 459                 goto return_results;
 460         }
 461
 462         /* one for first control, one for termination */
 463         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 464
 465 #if 0
 466         if( op->ctrls == NULL ) {
 467                 rs->sr_err = LDAP_NO_MEMORY;
 468                 rs->sr_text = "no memory";
 469                 goto return_results;
 470         }
 471 #endif
 472
 473         op->o_ctrls[nctrls] = NULL;
 474
 475         /* step through each element */
 476         for( tag = ber_first_element( ber, &len, &opaque );
 477                 tag != LBER_ERROR;
 478                 tag = ber_next_element( ber, &len, opaque ) )
 479         {
 480                 LDAPControl *c;
 481                 LDAPControl **tctrls;
 482
 483                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 484                 memset(c, 0, sizeof(LDAPControl));
 485
 486                 /* allocate pointer space for current controls (nctrls)
 487                  * + this control + extra NULL
 488                  */
 489                 tctrls = op->o_tmprealloc( op->o_ctrls,
 490                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 491
 492 #if 0
 493                 if( tctrls == NULL ) {
 494                         ch_free( c );
 495                         ldap_controls_free(op->o_ctrls);
 496                         op->o_ctrls = NULL;
 497
 498                         rs->sr_err = LDAP_NO_MEMORY;
 499                         rs->sr_text = "no memory";
 500                         goto return_results;
 501                 }
 502 #endif
 503                 op->o_ctrls = tctrls;
 504
 505                 op->o_ctrls[nctrls++] = c;
 506                 op->o_ctrls[nctrls] = NULL;
 507
 508                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 509                 c->ldctl_oid = bv.bv_val;
 510
 511                 if( tag == LBER_ERROR ) {
 512                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 513                                 0, 0, 0 );
 514
 515                         slap_free_ctrls( op, op->o_ctrls );
 516                         op->o_ctrls = NULL;
 517                         rs->sr_err = SLAPD_DISCONNECT;
 518                         rs->sr_text = "decoding controls error";
 519                         goto return_results;
 520
 521                 } else if( c->ldctl_oid == NULL ) {
 522                         Debug( LDAP_DEBUG_TRACE,
 523                                 "get_ctrls: conn %lu got emtpy OID.\n",
 524                                 op->o_connid, 0, 0 );
 525
 526                         slap_free_ctrls( op, op->o_ctrls );
 527                         op->o_ctrls = NULL;
 528                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 529                         rs->sr_text = "OID field is empty";
 530                         goto return_results;
 531                 }
 532
 533                 tag = ber_peek_tag( ber, &len );
 534
 535                 if( tag == LBER_BOOLEAN ) {
 536                         ber_int_t crit;
 537                         tag = ber_scanf( ber, "b", &crit );
 538
 539                         if( tag == LBER_ERROR ) {
 540                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 541                                         0, 0, 0 );
 542                                 slap_free_ctrls( op, op->o_ctrls );
 543                                 op->o_ctrls = NULL;
 544                                 rs->sr_err = SLAPD_DISCONNECT;
 545                                 rs->sr_text = "decoding controls error";
 546                                 goto return_results;
 547                         }
 548
 549                         c->ldctl_iscritical = (crit != 0);
 550                         tag = ber_peek_tag( ber, &len );
 551                 }
 552
 553                 if( tag == LBER_OCTETSTRING ) {
 554                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 555
 556                         if( tag == LBER_ERROR ) {
 557                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 558                                         "%s (%scritical): get value failed.\n",
 559                                         op->o_connid, c->ldctl_oid,
 560                                         c->ldctl_iscritical ? "" : "non" );
 561                                 slap_free_ctrls( op, op->o_ctrls );
 562                                 op->o_ctrls = NULL;
 563                                 rs->sr_err = SLAPD_DISCONNECT;
 564                                 rs->sr_text = "decoding controls error";
 565                                 goto return_results;
 566                         }
 567                 }
 568
 569                 Debug( LDAP_DEBUG_TRACE,
 570                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 571                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 572
 573                 sc = find_ctrl( c->ldctl_oid );
 574                 if( sc != NULL ) {
 575                         /* recognized control */
 576                         slap_mask_t tagmask;
 577                         switch( op->o_tag ) {
 578                         case LDAP_REQ_ADD:
 579                                 tagmask = SLAP_CTRL_ADD;
 580                                 break;
 581                         case LDAP_REQ_BIND:
 582                                 tagmask = SLAP_CTRL_BIND;
 583                                 break;
 584                         case LDAP_REQ_COMPARE:
 585                                 tagmask = SLAP_CTRL_COMPARE;
 586                                 break;
 587                         case LDAP_REQ_DELETE:
 588                                 tagmask = SLAP_CTRL_DELETE;
 589                                 break;
 590                         case LDAP_REQ_MODIFY:
 591                                 tagmask = SLAP_CTRL_MODIFY;
 592                                 break;
 593                         case LDAP_REQ_RENAME:
 594                                 tagmask = SLAP_CTRL_RENAME;
 595                                 break;
 596                         case LDAP_REQ_SEARCH:
 597                                 tagmask = SLAP_CTRL_SEARCH;
 598                                 break;
 599                         case LDAP_REQ_UNBIND:
 600                                 tagmask = SLAP_CTRL_UNBIND;
 601                                 break;
 602                         case LDAP_REQ_ABANDON:
 603                                 tagmask = SLAP_CTRL_ABANDON;
 604                                 break;
 605                         case LDAP_REQ_EXTENDED:
 606                                 tagmask=~0L;
 607                                 assert( op->ore_reqoid.bv_val != NULL );
 608                                 if( sc->sc_extendedops != NULL ) {
 609                                         int i;
 610                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 611                                                 if( strcmp( op->ore_reqoid.bv_val,
 612                                                         sc->sc_extendedops[i] ) == 0 )
 613                                                 {
 614                                                         tagmask=0L;
 615                                                         break;
 616                                                 }
 617                                         }
 618                                 }
 619                                 break;
 620                         default:
 621                                 rs->sr_err = LDAP_OTHER;
 622                                 rs->sr_text = "controls internal error";
 623                                 goto return_results;
 624                         }
 625
 626                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 627                                 /* available extension */
 628                                 int     rc;
 629
 630                                 if( !sc->sc_parse ) {
 631                                         rs->sr_err = LDAP_OTHER;
 632                                         rs->sr_text = "not yet implemented";
 633                                         goto return_results;
 634                                 }
 635
 636                                 rc = sc->sc_parse( op, rs, c );
 637                                 if ( rc ) {
 638                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 639                                         rs->sr_err = rc;
 640                                         goto return_results;
 641                                 }
 642
 643                         } else if( c->ldctl_iscritical ) {
 644                                 /* unavailable CRITICAL control */
 645                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 646                                 rs->sr_text = "critical extension is unavailable";
 647                                 goto return_results;
 648                         }
 649
 650                 } else if( c->ldctl_iscritical ) {
 651                         /* unrecognized CRITICAL control */
 652                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 653                         rs->sr_text = "critical extension is not recognized";
 654                         goto return_results;
 655                 }
 656 next_ctrl:;
 657         }
 658
 659 return_results:
 660         Debug( LDAP_DEBUG_TRACE,
 661                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 662                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 663
 664         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 665                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 666                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 667                         send_ldap_disconnect( op, rs );
 668                         rs->sr_err = SLAPD_DISCONNECT;
 669                 } else {
 670                         send_ldap_result( op, rs );
 671                 }
 672         }
 673
 674         return rs->sr_err;
 675 }
 676
 677 static int parseModifyIncrement (
 678         Operation *op,
 679         SlapReply *rs,
 680         LDAPControl *ctrl )
 681 {
 682 #if 0
 683         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 684                 rs->sr_text = "modifyIncrement control specified multiple times";
 685                 return LDAP_PROTOCOL_ERROR;
 686         }
 687 #endif
 688
 689         if ( ctrl->ldctl_value.bv_len ) {
 690                 rs->sr_text = "modifyIncrement control value not empty";
 691                 return LDAP_PROTOCOL_ERROR;
 692         }
 693
 694 #if 0
 695         op->o_modifyIncrement = ctrl->ldctl_iscritical
 696                 ? SLAP_CONTROL_CRITICAL
 697                 : SLAP_CONTROL_NONCRITICAL;
 698 #endif
 699
 700         return LDAP_SUCCESS;
 701 }
 702
 703 static int parseManageDSAit (
 704         Operation *op,
 705         SlapReply *rs,
 706         LDAPControl *ctrl )
 707 {
 708         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 709                 rs->sr_text = "manageDSAit control specified multiple times";
 710                 return LDAP_PROTOCOL_ERROR;
 711         }
 712
 713         if ( ctrl->ldctl_value.bv_len ) {
 714                 rs->sr_text = "manageDSAit control value not empty";
 715                 return LDAP_PROTOCOL_ERROR;
 716         }
 717
 718         op->o_managedsait = ctrl->ldctl_iscritical
 719                 ? SLAP_CONTROL_CRITICAL
 720                 : SLAP_CONTROL_NONCRITICAL;
 721
 722         return LDAP_SUCCESS;
 723 }
 724
 725 static int parseProxyAuthz (
 726         Operation *op,
 727         SlapReply *rs,
 728         LDAPControl *ctrl )
 729 {
 730         int             rc;
 731         struct berval   dn = BER_BVNULL;
 732
 733         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 734                 rs->sr_text = "proxy authorization control specified multiple times";
 735                 return LDAP_PROTOCOL_ERROR;
 736         }
 737
 738         op->o_proxy_authz = ctrl->ldctl_iscritical
 739                 ? SLAP_CONTROL_CRITICAL
 740                 : SLAP_CONTROL_NONCRITICAL;
 741
 742         Debug( LDAP_DEBUG_ARGS,
 743                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 744                 op->o_connid,
 745                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 746                 0 );
 747
 748         if( ctrl->ldctl_value.bv_len == 0 ) {
 749                 Debug( LDAP_DEBUG_TRACE,
 750                         "parseProxyAuthz: conn=%lu anonymous\n",
 751                         op->o_connid, 0, 0 );
 752
 753                 /* anonymous */
 754                 free( op->o_dn.bv_val );
 755                 op->o_dn.bv_len = 0;
 756                 op->o_dn.bv_val = ch_strdup( "" );
 757
 758                 free( op->o_ndn.bv_val );
 759                 op->o_ndn.bv_len = 0;
 760                 op->o_ndn.bv_val = ch_strdup( "" );
 761
 762                 return LDAP_SUCCESS;
 763         }
 764
 765         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 766                         NULL, &dn, SLAP_GETDN_AUTHZID );
 767
 768         /* FIXME: empty DN in proxyAuthz control should be legal... */
 769         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 770                 if ( dn.bv_val ) {
 771                         ch_free( dn.bv_val );
 772                 }
 773                 rs->sr_text = "authzId mapping failed";
 774                 return LDAP_PROXY_AUTHZ_FAILURE;
 775         }
 776
 777         Debug( LDAP_DEBUG_TRACE,
 778                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 779                 op->o_connid,
 780                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 781
 782         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 783
 784         if( rc ) {
 785                 ch_free( dn.bv_val );
 786                 rs->sr_text = "not authorized to assume identity";
 787                 return LDAP_PROXY_AUTHZ_FAILURE;
 788         }
 789
 790         ch_free( op->o_dn.bv_val );
 791         ch_free( op->o_ndn.bv_val );
 792
 793         op->o_dn.bv_val = NULL;
 794         op->o_ndn = dn;
 795
 796         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 797             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 798
 799         /*
 800          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 801          * from now on op->o_dn is normalized
 802          */
 803         ber_dupbv( &op->o_dn, &dn );
 804
 805         return LDAP_SUCCESS;
 806 }
 807
 808 static int parseNoOp (
 809         Operation *op,
 810         SlapReply *rs,
 811         LDAPControl *ctrl )
 812 {
 813         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 814                 rs->sr_text = "noop control specified multiple times";
 815                 return LDAP_PROTOCOL_ERROR;
 816         }
 817
 818         if ( ctrl->ldctl_value.bv_len ) {
 819                 rs->sr_text = "noop control value not empty";
 820                 return LDAP_PROTOCOL_ERROR;
 821         }
 822
 823         op->o_noop = ctrl->ldctl_iscritical
 824                 ? SLAP_CONTROL_CRITICAL
 825                 : SLAP_CONTROL_NONCRITICAL;
 826
 827         return LDAP_SUCCESS;
 828 }
 829
 830 static int parsePagedResults (
 831         Operation *op,
 832         SlapReply *rs,
 833         LDAPControl *ctrl )
 834 {
 835         int             rc = LDAP_SUCCESS;
 836         ber_tag_t       tag;
 837         ber_int_t       size;
 838         BerElement      *ber;
 839         struct berval   cookie = BER_BVNULL;
 840         PagedResultsState       *ps;
 841
 842         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 843                 rs->sr_text = "paged results control specified multiple times";
 844                 return LDAP_PROTOCOL_ERROR;
 845         }
 846
 847         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 848                 rs->sr_text = "paged results control value is empty (or absent)";
 849                 return LDAP_PROTOCOL_ERROR;
 850         }
 851
 852         /* Parse the control value
 853          *      realSearchControlValue ::= SEQUENCE {
 854          *              size    INTEGER (0..maxInt),
 855          *                              -- requested page size from client
 856          *                              -- result set size estimate from server
 857          *              cookie  OCTET STRING
 858          * }
 859          */
 860         ber = ber_init( &ctrl->ldctl_value );
 861         if ( ber == NULL ) {
 862                 rs->sr_text = "internal error";
 863                 return LDAP_OTHER;
 864         }
 865
 866         tag = ber_scanf( ber, "{im}", &size, &cookie );
 867
 868         if ( tag == LBER_ERROR ) {
 869                 rs->sr_text = "paged results control could not be decoded";
 870                 rc = LDAP_PROTOCOL_ERROR;
 871                 goto done;
 872         }
 873
 874         if ( size < 0 ) {
 875                 rs->sr_text = "paged results control size invalid";
 876                 rc = LDAP_PROTOCOL_ERROR;
 877                 goto done;
 878         }
 879
 880 #if 0
 881         /* defer cookie decoding/checks to backend... */
 882         if ( cookie.bv_len ) {
 883                 PagedResultsCookie reqcookie;
 884                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 885                         /* bad cookie */
 886                         rs->sr_text = "paged results cookie is invalid";
 887                         rc = LDAP_PROTOCOL_ERROR;
 888                         goto done;
 889                 }
 890
 891                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 892
 893                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 894                         /* bad cookie */
 895                         rs->sr_text = "paged results cookie is invalid";
 896                         rc = LDAP_PROTOCOL_ERROR;
 897                         goto done;
 898
 899                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 900                         rs->sr_text = "paged results cookie is invalid or old";
 901                         rc = LDAP_UNWILLING_TO_PERFORM;
 902                         goto done;
 903                 }
 904
 905         } else {
 906                 /* Initial request.  Initialize state. */
 907 #if 0
 908                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 909                         /* There's another pagedResults control on the
 910                          * same connection; reject new pagedResults controls
 911                          * (allowed by RFC2696) */
 912                         rs->sr_text = "paged results cookie unavailable; try later";
 913                         rc = LDAP_UNWILLING_TO_PERFORM;
 914                         goto done;
 915                 }
 916 #endif
 917                 op->o_pagedresults_state.ps_cookie = 0;
 918                 op->o_pagedresults_state.ps_count = 0;
 919         }
 920 #endif
 921
 922         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 923         *ps = op->o_conn->c_pagedresults_state;
 924         ps->ps_size = size;
 925         op->o_pagedresults_state = ps;
 926
 927         /* NOTE: according to RFC 2696 3.:
 928
 929     If the page size is greater than or equal to the sizeLimit value, the
 930     server should ignore the control as the request can be satisfied in a
 931     single page.
 932
 933          * NOTE: this assumes that the op->ors_slimit be set
 934          * before the controls are parsed.
 935          */
 936
 937         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 938                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 939
 940         } else if ( ctrl->ldctl_iscritical ) {
 941                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 942
 943         } else {
 944                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 945         }
 946
 947 done:;
 948         (void)ber_free( ber, 1 );
 949         return rc;
 950 }
 951
 952 static int parseAssert (
 953         Operation *op,
 954         SlapReply *rs,
 955         LDAPControl *ctrl )
 956 {
 957         BerElement      *ber;
 958         struct berval   fstr = BER_BVNULL;
 959         const char *err_msg = "";
 960
 961         if ( op->o_assert != SLAP_CONTROL_NONE ) {
 962                 rs->sr_text = "assert control specified multiple times";
 963                 return LDAP_PROTOCOL_ERROR;
 964         }
 965
 966         if ( ctrl->ldctl_value.bv_len == 0 ) {
 967                 rs->sr_text = "assert control value is empty (or absent)";
 968                 return LDAP_PROTOCOL_ERROR;
 969         }
 970
 971         ber = ber_init( &(ctrl->ldctl_value) );
 972         if (ber == NULL) {
 973                 rs->sr_text = "assert control: internal error";
 974                 return LDAP_OTHER;
 975         }
 976
 977         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
 978
 979         if( rs->sr_err != LDAP_SUCCESS ) {
 980                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 981                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 982                         send_ldap_disconnect( op, rs );
 983                         rs->sr_err = SLAPD_DISCONNECT;
 984                 } else {
 985                         send_ldap_result( op, rs );
 986                 }
 987                 if( op->o_assertion != NULL ) {
 988                         filter_free_x( op, op->o_assertion );
 989                 }
 990                 return rs->sr_err;
 991         }
 992
 993 #ifdef LDAP_DEBUG
 994         filter2bv_x( op, op->o_assertion, &fstr );
 995
 996         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 997                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 998         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 999 #endif
1000
1001         op->o_assert = ctrl->ldctl_iscritical
1002                 ? SLAP_CONTROL_CRITICAL
1003                 : SLAP_CONTROL_NONCRITICAL;
1004
1005         rs->sr_err = LDAP_SUCCESS;
1006         return LDAP_SUCCESS;
1007 }
1008
1009 static int parsePreRead (
1010         Operation *op,
1011         SlapReply *rs,
1012         LDAPControl *ctrl )
1013 {
1014         ber_len_t siz, off, i;
1015         AttributeName *an = NULL;
1016         BerElement      *ber;
1017
1018         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1019                 rs->sr_text = "preread control specified multiple times";
1020                 return LDAP_PROTOCOL_ERROR;
1021         }
1022
1023         if ( ctrl->ldctl_value.bv_len == 0 ) {
1024                 rs->sr_text = "preread control value is empty (or absent)";
1025                 return LDAP_PROTOCOL_ERROR;
1026         }
1027
1028         ber = ber_init( &(ctrl->ldctl_value) );
1029         if (ber == NULL) {
1030                 rs->sr_text = "preread control: internal error";
1031                 return LDAP_OTHER;
1032         }
1033
1034         siz = sizeof( AttributeName );
1035         off = offsetof( AttributeName, an_name );
1036         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1037                 rs->sr_text = "preread control: decoding error";
1038                 return LDAP_PROTOCOL_ERROR;
1039         }
1040
1041         for( i=0; i<siz; i++ ) {
1042                 int             rc = LDAP_SUCCESS;
1043                 const char      *dummy = NULL;
1044
1045                 an[i].an_desc = NULL;
1046                 an[i].an_oc = NULL;
1047                 an[i].an_oc_exclude = 0;
1048                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1049                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1050                         rs->sr_text = dummy
1051                                 ? dummy
1052                                 : "postread control: unknown attributeType";
1053                         return rc;
1054                 }
1055         }
1056
1057         op->o_preread = ctrl->ldctl_iscritical
1058                 ? SLAP_CONTROL_CRITICAL
1059                 : SLAP_CONTROL_NONCRITICAL;
1060
1061         op->o_preread_attrs = an;
1062
1063         rs->sr_err = LDAP_SUCCESS;
1064         return LDAP_SUCCESS;
1065 }
1066
1067 static int parsePostRead (
1068         Operation *op,
1069         SlapReply *rs,
1070         LDAPControl *ctrl )
1071 {
1072         ber_len_t siz, off, i;
1073         AttributeName *an = NULL;
1074         BerElement      *ber;
1075
1076         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1077                 rs->sr_text = "postread control specified multiple times";
1078                 return LDAP_PROTOCOL_ERROR;
1079         }
1080
1081         if ( ctrl->ldctl_value.bv_len == 0 ) {
1082                 rs->sr_text = "postread control value is empty (or absent)";
1083                 return LDAP_PROTOCOL_ERROR;
1084         }
1085
1086         ber = ber_init( &(ctrl->ldctl_value) );
1087         if (ber == NULL) {
1088                 rs->sr_text = "postread control: internal error";
1089                 return LDAP_OTHER;
1090         }
1091
1092         siz = sizeof( AttributeName );
1093         off = offsetof( AttributeName, an_name );
1094         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1095                 rs->sr_text = "postread control: decoding error";
1096                 return LDAP_PROTOCOL_ERROR;
1097         }
1098
1099         for( i=0; i<siz; i++ ) {
1100                 int             rc = LDAP_SUCCESS;
1101                 const char      *dummy = NULL;
1102
1103                 an[i].an_desc = NULL;
1104                 an[i].an_oc = NULL;
1105                 an[i].an_oc_exclude = 0;
1106                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1107                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1108                         rs->sr_text = dummy
1109                                 ? dummy
1110                                 : "postread control: unknown attributeType";
1111                         return rc;
1112                 }
1113         }
1114
1115         op->o_postread = ctrl->ldctl_iscritical
1116                 ? SLAP_CONTROL_CRITICAL
1117                 : SLAP_CONTROL_NONCRITICAL;
1118
1119         op->o_postread_attrs = an;
1120
1121         rs->sr_err = LDAP_SUCCESS;
1122         return LDAP_SUCCESS;
1123 }
1124
1125 int parseValuesReturnFilter (
1126         Operation *op,
1127         SlapReply *rs,
1128         LDAPControl *ctrl )
1129 {
1130         BerElement      *ber;
1131         struct berval   fstr = BER_BVNULL;
1132         const char *err_msg = "";
1133
1134         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1135                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1136                 return LDAP_PROTOCOL_ERROR;
1137         }
1138
1139         if ( ctrl->ldctl_value.bv_len == 0 ) {
1140                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1141                 return LDAP_PROTOCOL_ERROR;
1142         }
1143
1144         ber = ber_init( &(ctrl->ldctl_value) );
1145         if (ber == NULL) {
1146                 rs->sr_text = "internal error";
1147                 return LDAP_OTHER;
1148         }
1149
1150         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1151
1152         if( rs->sr_err != LDAP_SUCCESS ) {
1153                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1154                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1155                         send_ldap_disconnect( op, rs );
1156                         rs->sr_err = SLAPD_DISCONNECT;
1157                 } else {
1158                         send_ldap_result( op, rs );
1159                 }
1160                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1161         }
1162 #ifdef LDAP_DEBUG
1163         else {
1164                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1165         }
1166
1167         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1168                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1169         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1170 #endif
1171
1172         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1173                 ? SLAP_CONTROL_CRITICAL
1174                 : SLAP_CONTROL_NONCRITICAL;
1175
1176         rs->sr_err = LDAP_SUCCESS;
1177         return LDAP_SUCCESS;
1178 }
1179
1180 #ifdef LDAP_CONTROL_SUBENTRIES
1181 static int parseSubentries (
1182         Operation *op,
1183         SlapReply *rs,
1184         LDAPControl *ctrl )
1185 {
1186         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1187                 rs->sr_text = "subentries control specified multiple times";
1188                 return LDAP_PROTOCOL_ERROR;
1189         }
1190
1191         /* FIXME: should use BER library */
1192         if( ( ctrl->ldctl_value.bv_len != 3 )
1193                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1194                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1195         {
1196                 rs->sr_text = "subentries control value encoding is bogus";
1197                 return LDAP_PROTOCOL_ERROR;
1198         }
1199
1200         op->o_subentries = ctrl->ldctl_iscritical
1201                 ? SLAP_CONTROL_CRITICAL
1202                 : SLAP_CONTROL_NONCRITICAL;
1203
1204         if ( (void *)(ctrl->ldctl_value.bv_val[2] != 0x00))
1205                 set_subentries_visibility( op );
1206
1207         return LDAP_SUCCESS;
1208 }
1209 #endif
1210
1211 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1212 static int parsePermissiveModify (
1213         Operation *op,
1214         SlapReply *rs,
1215         LDAPControl *ctrl )
1216 {
1217         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1218                 rs->sr_text = "permissiveModify control specified multiple times";
1219                 return LDAP_PROTOCOL_ERROR;
1220         }
1221
1222         if ( ctrl->ldctl_value.bv_len ) {
1223                 rs->sr_text = "permissiveModify control value not empty";
1224                 return LDAP_PROTOCOL_ERROR;
1225         }
1226
1227         op->o_permissive_modify = ctrl->ldctl_iscritical
1228                 ? SLAP_CONTROL_CRITICAL
1229                 : SLAP_CONTROL_NONCRITICAL;
1230
1231         return LDAP_SUCCESS;
1232 }
1233 #endif
1234
1235 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1236 static int parseDomainScope (
1237         Operation *op,
1238         SlapReply *rs,
1239         LDAPControl *ctrl )
1240 {
1241         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1242                 rs->sr_text = "domainScope control specified multiple times";
1243                 return LDAP_PROTOCOL_ERROR;
1244         }
1245
1246         if ( ctrl->ldctl_value.bv_len ) {
1247                 rs->sr_text = "domainScope control value not empty";
1248                 return LDAP_PROTOCOL_ERROR;
1249         }
1250
1251         op->o_domain_scope = ctrl->ldctl_iscritical
1252                 ? SLAP_CONTROL_CRITICAL
1253                 : SLAP_CONTROL_NONCRITICAL;
1254
1255         return LDAP_SUCCESS;
1256 }
1257 #endif
1258
1259 #ifdef LDAP_CONTROL_X_TREE_DELETE
1260 static int parseTreeDelete (
1261         Operation *op,
1262         SlapReply *rs,
1263         LDAPControl *ctrl )
1264 {
1265         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1266                 rs->sr_text = "treeDelete control specified multiple times";
1267                 return LDAP_PROTOCOL_ERROR;
1268         }
1269
1270         if ( ctrl->ldctl_value.bv_len ) {
1271                 rs->sr_text = "treeDelete control value not empty";
1272                 return LDAP_PROTOCOL_ERROR;
1273         }
1274
1275         op->o_tree_delete = ctrl->ldctl_iscritical
1276                 ? SLAP_CONTROL_CRITICAL
1277                 : SLAP_CONTROL_NONCRITICAL;
1278
1279         return LDAP_SUCCESS;
1280 }
1281 #endif
1282
1283 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1284 static int parseSearchOptions (
1285         Operation *op,
1286         SlapReply *rs,
1287         LDAPControl *ctrl )
1288 {
1289         BerElement *ber;
1290         ber_int_t search_flags;
1291
1292         if ( ctrl->ldctl_value.bv_len == 0 ) {
1293                 rs->sr_text = "searchOptions control value not empty";
1294                 return LDAP_PROTOCOL_ERROR;
1295         }
1296
1297         ber = ber_init( &ctrl->ldctl_value );
1298         if( ber == NULL ) {
1299                 rs->sr_text = "internal error";
1300                 return LDAP_OTHER;
1301         }
1302
1303         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1304                 rs->sr_text = "searchOptions control decoding error";
1305                 return LDAP_PROTOCOL_ERROR;
1306         }
1307
1308         (void) ber_free( ber, 1 );
1309
1310         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1311                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1312                         rs->sr_text = "searchOptions control specified multiple times "
1313                                 "or with domainScope control";
1314                         return LDAP_PROTOCOL_ERROR;
1315                 }
1316
1317                 op->o_domain_scope = ctrl->ldctl_iscritical
1318                         ? SLAP_CONTROL_CRITICAL
1319                         : SLAP_CONTROL_NONCRITICAL;
1320         }
1321
1322         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1323                 /* Other search flags not recognised so far,
1324                  * including:
1325                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1326                  */
1327                 rs->sr_text = "searchOptions contained unrecongized flag";
1328                 return LDAP_UNWILLING_TO_PERFORM;
1329         }
1330
1331         return LDAP_SUCCESS;
1332 }
1333 #endif
1334