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_FRONTEND|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_FRONTEND|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_FRONTEND|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 void slap_free_ctrls(
 384         Operation *op,
 385         LDAPControl **ctrls )
 386 {
 387         int i;
 388
 389         for (i=0; ctrls[i]; i++) {
 390                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 391         }
 392         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 393 }
 394
 395 int get_ctrls(
 396         Operation *op,
 397         SlapReply *rs,
 398         int sendres )
 399 {
 400         int nctrls = 0;
 401         ber_tag_t tag;
 402         ber_len_t len;
 403         char *opaque;
 404         BerElement *ber = op->o_ber;
 405         struct slap_control *sc;
 406         struct berval bv;
 407
 408         len = ber_pvt_ber_remaining(ber);
 409
 410         if( len == 0) {
 411                 /* no controls */
 412                 rs->sr_err = LDAP_SUCCESS;
 413                 return rs->sr_err;
 414         }
 415
 416         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 417                 if( tag == LBER_ERROR ) {
 418                         rs->sr_err = SLAPD_DISCONNECT;
 419                         rs->sr_text = "unexpected data in PDU";
 420                 }
 421
 422                 goto return_results;
 423         }
 424
 425         Debug( LDAP_DEBUG_TRACE,
 426                 "=> get_ctrls\n", 0, 0, 0 );
 427
 428         if( op->o_protocol < LDAP_VERSION3 ) {
 429                 rs->sr_err = SLAPD_DISCONNECT;
 430                 rs->sr_text = "controls require LDAPv3";
 431                 goto return_results;
 432         }
 433
 434         /* one for first control, one for termination */
 435         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 436
 437 #if 0
 438         if( op->ctrls == NULL ) {
 439                 rs->sr_err = LDAP_NO_MEMORY;
 440                 rs->sr_text = "no memory";
 441                 goto return_results;
 442         }
 443 #endif
 444
 445         op->o_ctrls[nctrls] = NULL;
 446
 447         /* step through each element */
 448         for( tag = ber_first_element( ber, &len, &opaque );
 449                 tag != LBER_ERROR;
 450                 tag = ber_next_element( ber, &len, opaque ) )
 451         {
 452                 LDAPControl *c;
 453                 LDAPControl **tctrls;
 454
 455                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 456                 memset(c, 0, sizeof(LDAPControl));
 457
 458                 /* allocate pointer space for current controls (nctrls)
 459                  * + this control + extra NULL
 460                  */
 461                 tctrls = op->o_tmprealloc( op->o_ctrls,
 462                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 463
 464 #if 0
 465                 if( tctrls == NULL ) {
 466                         ch_free( c );
 467                         ldap_controls_free(op->o_ctrls);
 468                         op->o_ctrls = NULL;
 469
 470                         rs->sr_err = LDAP_NO_MEMORY;
 471                         rs->sr_text = "no memory";
 472                         goto return_results;
 473                 }
 474 #endif
 475                 op->o_ctrls = tctrls;
 476
 477                 op->o_ctrls[nctrls++] = c;
 478                 op->o_ctrls[nctrls] = NULL;
 479
 480                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 481                 c->ldctl_oid = bv.bv_val;
 482
 483                 if( tag == LBER_ERROR ) {
 484                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 485                                 0, 0, 0 );
 486
 487                         slap_free_ctrls( op, op->o_ctrls );
 488                         op->o_ctrls = NULL;
 489                         rs->sr_err = SLAPD_DISCONNECT;
 490                         rs->sr_text = "decoding controls error";
 491                         goto return_results;
 492
 493                 } else if( c->ldctl_oid == NULL ) {
 494                         Debug( LDAP_DEBUG_TRACE,
 495                                 "get_ctrls: conn %lu got emtpy OID.\n",
 496                                 op->o_connid, 0, 0 );
 497
 498                         slap_free_ctrls( op, op->o_ctrls );
 499                         op->o_ctrls = NULL;
 500                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 501                         rs->sr_text = "OID field is empty";
 502                         goto return_results;
 503                 }
 504
 505                 tag = ber_peek_tag( ber, &len );
 506
 507                 if( tag == LBER_BOOLEAN ) {
 508                         ber_int_t crit;
 509                         tag = ber_scanf( ber, "b", &crit );
 510
 511                         if( tag == LBER_ERROR ) {
 512                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 513                                         0, 0, 0 );
 514                                 slap_free_ctrls( op, op->o_ctrls );
 515                                 op->o_ctrls = NULL;
 516                                 rs->sr_err = SLAPD_DISCONNECT;
 517                                 rs->sr_text = "decoding controls error";
 518                                 goto return_results;
 519                         }
 520
 521                         c->ldctl_iscritical = (crit != 0);
 522                         tag = ber_peek_tag( ber, &len );
 523                 }
 524
 525                 if( tag == LBER_OCTETSTRING ) {
 526                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 527
 528                         if( tag == LBER_ERROR ) {
 529                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 530                                         "%s (%scritical): get value failed.\n",
 531                                         op->o_connid, c->ldctl_oid,
 532                                         c->ldctl_iscritical ? "" : "non" );
 533                                 slap_free_ctrls( op, op->o_ctrls );
 534                                 op->o_ctrls = NULL;
 535                                 rs->sr_err = SLAPD_DISCONNECT;
 536                                 rs->sr_text = "decoding controls error";
 537                                 goto return_results;
 538                         }
 539                 }
 540
 541                 Debug( LDAP_DEBUG_TRACE,
 542                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 543                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 544
 545                 sc = find_ctrl( c->ldctl_oid );
 546                 if( sc != NULL ) {
 547                         /* recognized control */
 548                         slap_mask_t tagmask;
 549                         switch( op->o_tag ) {
 550                         case LDAP_REQ_ADD:
 551                                 tagmask = SLAP_CTRL_ADD;
 552                                 break;
 553                         case LDAP_REQ_BIND:
 554                                 tagmask = SLAP_CTRL_BIND;
 555                                 break;
 556                         case LDAP_REQ_COMPARE:
 557                                 tagmask = SLAP_CTRL_COMPARE;
 558                                 break;
 559                         case LDAP_REQ_DELETE:
 560                                 tagmask = SLAP_CTRL_DELETE;
 561                                 break;
 562                         case LDAP_REQ_MODIFY:
 563                                 tagmask = SLAP_CTRL_MODIFY;
 564                                 break;
 565                         case LDAP_REQ_RENAME:
 566                                 tagmask = SLAP_CTRL_RENAME;
 567                                 break;
 568                         case LDAP_REQ_SEARCH:
 569                                 tagmask = SLAP_CTRL_SEARCH;
 570                                 break;
 571                         case LDAP_REQ_UNBIND:
 572                                 tagmask = SLAP_CTRL_UNBIND;
 573                                 break;
 574                         case LDAP_REQ_ABANDON:
 575                                 tagmask = SLAP_CTRL_ABANDON;
 576                                 break;
 577                         case LDAP_REQ_EXTENDED:
 578                                 tagmask=~0L;
 579                                 assert( op->ore_reqoid.bv_val != NULL );
 580                                 if( sc->sc_extendedops != NULL ) {
 581                                         int i;
 582                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 583                                                 if( strcmp( op->ore_reqoid.bv_val,
 584                                                         sc->sc_extendedops[i] ) == 0 )
 585                                                 {
 586                                                         tagmask=0L;
 587                                                         break;
 588                                                 }
 589                                         }
 590                                 }
 591                                 break;
 592                         default:
 593                                 rs->sr_err = LDAP_OTHER;
 594                                 rs->sr_text = "controls internal error";
 595                                 goto return_results;
 596                         }
 597
 598                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 599                                 /* available extension */
 600                                 int     rc;
 601
 602                                 if( !sc->sc_parse ) {
 603                                         rs->sr_err = LDAP_OTHER;
 604                                         rs->sr_text = "not yet implemented";
 605                                         goto return_results;
 606                                 }
 607
 608                                 rc = sc->sc_parse( op, rs, c );
 609                                 if ( rc ) {
 610                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 611                                         rs->sr_err = rc;
 612                                         goto return_results;
 613                                 }
 614
 615                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 616                                         /* kludge to disable backend_control() check */
 617                                         c->ldctl_iscritical = 0;
 618
 619                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 620                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 621                                 {
 622                                         /* kludge to disable backend_control() check */
 623                                         c->ldctl_iscritical = 0;
 624                                 }
 625
 626                         } else if( c->ldctl_iscritical ) {
 627                                 /* unavailable CRITICAL control */
 628                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 629                                 rs->sr_text = "critical extension is unavailable";
 630                                 goto return_results;
 631                         }
 632
 633                 } else if( c->ldctl_iscritical ) {
 634                         /* unrecognized CRITICAL control */
 635                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 636                         rs->sr_text = "critical extension is not recognized";
 637                         goto return_results;
 638                 }
 639 next_ctrl:;
 640         }
 641
 642 return_results:
 643         Debug( LDAP_DEBUG_TRACE,
 644                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 645                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 646
 647         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 648                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 649                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 650                         send_ldap_disconnect( op, rs );
 651                         rs->sr_err = SLAPD_DISCONNECT;
 652                 } else {
 653                         send_ldap_result( op, rs );
 654                 }
 655         }
 656
 657         return rs->sr_err;
 658 }
 659
 660 static int parseModifyIncrement (
 661         Operation *op,
 662         SlapReply *rs,
 663         LDAPControl *ctrl )
 664 {
 665 #if 0
 666         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 667                 rs->sr_text = "modifyIncrement control specified multiple times";
 668                 return LDAP_PROTOCOL_ERROR;
 669         }
 670 #endif
 671
 672         if ( ctrl->ldctl_value.bv_len ) {
 673                 rs->sr_text = "modifyIncrement control value not empty";
 674                 return LDAP_PROTOCOL_ERROR;
 675         }
 676
 677 #if 0
 678         op->o_modifyIncrement = ctrl->ldctl_iscritical
 679                 ? SLAP_CONTROL_CRITICAL
 680                 : SLAP_CONTROL_NONCRITICAL;
 681 #endif
 682
 683         return LDAP_SUCCESS;
 684 }
 685
 686 static int parseManageDSAit (
 687         Operation *op,
 688         SlapReply *rs,
 689         LDAPControl *ctrl )
 690 {
 691         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 692                 rs->sr_text = "manageDSAit control specified multiple times";
 693                 return LDAP_PROTOCOL_ERROR;
 694         }
 695
 696         if ( ctrl->ldctl_value.bv_len ) {
 697                 rs->sr_text = "manageDSAit control value not empty";
 698                 return LDAP_PROTOCOL_ERROR;
 699         }
 700
 701         op->o_managedsait = ctrl->ldctl_iscritical
 702                 ? SLAP_CONTROL_CRITICAL
 703                 : SLAP_CONTROL_NONCRITICAL;
 704
 705         return LDAP_SUCCESS;
 706 }
 707
 708 static int parseProxyAuthz (
 709         Operation *op,
 710         SlapReply *rs,
 711         LDAPControl *ctrl )
 712 {
 713         int             rc;
 714         struct berval   dn = BER_BVNULL;
 715
 716         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 717                 rs->sr_text = "proxy authorization control specified multiple times";
 718                 return LDAP_PROTOCOL_ERROR;
 719         }
 720
 721         op->o_proxy_authz = ctrl->ldctl_iscritical
 722                 ? SLAP_CONTROL_CRITICAL
 723                 : SLAP_CONTROL_NONCRITICAL;
 724
 725         Debug( LDAP_DEBUG_ARGS,
 726                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 727                 op->o_connid,
 728                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 729                 0 );
 730
 731         if( ctrl->ldctl_value.bv_len == 0 ) {
 732                 Debug( LDAP_DEBUG_TRACE,
 733                         "parseProxyAuthz: conn=%lu anonymous\n",
 734                         op->o_connid, 0, 0 );
 735
 736                 /* anonymous */
 737                 free( op->o_dn.bv_val );
 738                 op->o_dn.bv_len = 0;
 739                 op->o_dn.bv_val = ch_strdup( "" );
 740
 741                 free( op->o_ndn.bv_val );
 742                 op->o_ndn.bv_len = 0;
 743                 op->o_ndn.bv_val = ch_strdup( "" );
 744
 745                 return LDAP_SUCCESS;
 746         }
 747
 748         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 749                         NULL, &dn, SLAP_GETDN_AUTHZID );
 750
 751         /* FIXME: empty DN in proxyAuthz control should be legal... */
 752         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 753                 if ( dn.bv_val ) {
 754                         ch_free( dn.bv_val );
 755                 }
 756                 rs->sr_text = "authzId mapping failed";
 757                 return LDAP_PROXY_AUTHZ_FAILURE;
 758         }
 759
 760         Debug( LDAP_DEBUG_TRACE,
 761                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 762                 op->o_connid,
 763                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 764
 765         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 766
 767         if( rc ) {
 768                 ch_free( dn.bv_val );
 769                 rs->sr_text = "not authorized to assume identity";
 770                 return LDAP_PROXY_AUTHZ_FAILURE;
 771         }
 772
 773         ch_free( op->o_dn.bv_val );
 774         ch_free( op->o_ndn.bv_val );
 775
 776         op->o_dn.bv_val = NULL;
 777         op->o_ndn = dn;
 778
 779         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 780             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 781
 782         /*
 783          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 784          * from now on op->o_dn is normalized
 785          */
 786         ber_dupbv( &op->o_dn, &dn );
 787
 788         return LDAP_SUCCESS;
 789 }
 790
 791 static int parseNoOp (
 792         Operation *op,
 793         SlapReply *rs,
 794         LDAPControl *ctrl )
 795 {
 796         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 797                 rs->sr_text = "noop control specified multiple times";
 798                 return LDAP_PROTOCOL_ERROR;
 799         }
 800
 801         if ( ctrl->ldctl_value.bv_len ) {
 802                 rs->sr_text = "noop control value not empty";
 803                 return LDAP_PROTOCOL_ERROR;
 804         }
 805
 806         op->o_noop = ctrl->ldctl_iscritical
 807                 ? SLAP_CONTROL_CRITICAL
 808                 : SLAP_CONTROL_NONCRITICAL;
 809
 810         return LDAP_SUCCESS;
 811 }
 812
 813 static int parsePagedResults (
 814         Operation *op,
 815         SlapReply *rs,
 816         LDAPControl *ctrl )
 817 {
 818         int             rc = LDAP_SUCCESS;
 819         ber_tag_t       tag;
 820         ber_int_t       size;
 821         BerElement      *ber;
 822         struct berval   cookie = BER_BVNULL;
 823         PagedResultsState       *ps;
 824
 825         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 826                 rs->sr_text = "paged results control specified multiple times";
 827                 return LDAP_PROTOCOL_ERROR;
 828         }
 829
 830         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 831                 rs->sr_text = "paged results control value is empty (or absent)";
 832                 return LDAP_PROTOCOL_ERROR;
 833         }
 834
 835         /* Parse the control value
 836          *      realSearchControlValue ::= SEQUENCE {
 837          *              size    INTEGER (0..maxInt),
 838          *                              -- requested page size from client
 839          *                              -- result set size estimate from server
 840          *              cookie  OCTET STRING
 841          * }
 842          */
 843         ber = ber_init( &ctrl->ldctl_value );
 844         if ( ber == NULL ) {
 845                 rs->sr_text = "internal error";
 846                 return LDAP_OTHER;
 847         }
 848
 849         tag = ber_scanf( ber, "{im}", &size, &cookie );
 850
 851         if ( tag == LBER_ERROR ) {
 852                 rs->sr_text = "paged results control could not be decoded";
 853                 rc = LDAP_PROTOCOL_ERROR;
 854                 goto done;
 855         }
 856
 857         if ( size < 0 ) {
 858                 rs->sr_text = "paged results control size invalid";
 859                 rc = LDAP_PROTOCOL_ERROR;
 860                 goto done;
 861         }
 862
 863 #if 0
 864         /* defer cookie decoding/checks to backend... */
 865         if ( cookie.bv_len ) {
 866                 PagedResultsCookie reqcookie;
 867                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 868                         /* bad cookie */
 869                         rs->sr_text = "paged results cookie is invalid";
 870                         rc = LDAP_PROTOCOL_ERROR;
 871                         goto done;
 872                 }
 873
 874                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 875
 876                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 877                         /* bad cookie */
 878                         rs->sr_text = "paged results cookie is invalid";
 879                         rc = LDAP_PROTOCOL_ERROR;
 880                         goto done;
 881
 882                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 883                         rs->sr_text = "paged results cookie is invalid or old";
 884                         rc = LDAP_UNWILLING_TO_PERFORM;
 885                         goto done;
 886                 }
 887
 888         } else {
 889                 /* Initial request.  Initialize state. */
 890 #if 0
 891                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 892                         /* There's another pagedResults control on the
 893                          * same connection; reject new pagedResults controls
 894                          * (allowed by RFC2696) */
 895                         rs->sr_text = "paged results cookie unavailable; try later";
 896                         rc = LDAP_UNWILLING_TO_PERFORM;
 897                         goto done;
 898                 }
 899 #endif
 900                 op->o_pagedresults_state.ps_cookie = 0;
 901                 op->o_pagedresults_state.ps_count = 0;
 902         }
 903 #endif
 904
 905         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 906         *ps = op->o_conn->c_pagedresults_state;
 907         ps->ps_size = size;
 908         op->o_pagedresults_state = ps;
 909
 910         /* NOTE: according to RFC 2696 3.:
 911
 912     If the page size is greater than or equal to the sizeLimit value, the
 913     server should ignore the control as the request can be satisfied in a
 914     single page.
 915
 916          * NOTE: this assumes that the op->ors_slimit be set
 917          * before the controls are parsed.
 918          */
 919
 920         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 921                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 922
 923         } else if ( ctrl->ldctl_iscritical ) {
 924                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 925
 926         } else {
 927                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 928         }
 929
 930 done:;
 931         (void)ber_free( ber, 1 );
 932         return rc;
 933 }
 934
 935 static int parseAssert (
 936         Operation *op,
 937         SlapReply *rs,
 938         LDAPControl *ctrl )
 939 {
 940         BerElement      *ber;
 941         struct berval   fstr = BER_BVNULL;
 942         const char *err_msg = "";
 943
 944         if ( op->o_assert != SLAP_CONTROL_NONE ) {
 945                 rs->sr_text = "assert control specified multiple times";
 946                 return LDAP_PROTOCOL_ERROR;
 947         }
 948
 949         if ( ctrl->ldctl_value.bv_len == 0 ) {
 950                 rs->sr_text = "assert control value is empty (or absent)";
 951                 return LDAP_PROTOCOL_ERROR;
 952         }
 953
 954         ber = ber_init( &(ctrl->ldctl_value) );
 955         if (ber == NULL) {
 956                 rs->sr_text = "assert control: internal error";
 957                 return LDAP_OTHER;
 958         }
 959
 960         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
 961
 962         if( rs->sr_err != LDAP_SUCCESS ) {
 963                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 964                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 965                         send_ldap_disconnect( op, rs );
 966                         rs->sr_err = SLAPD_DISCONNECT;
 967                 } else {
 968                         send_ldap_result( op, rs );
 969                 }
 970                 if( op->o_assertion != NULL ) {
 971                         filter_free_x( op, op->o_assertion );
 972                 }
 973                 return rs->sr_err;
 974         }
 975
 976 #ifdef LDAP_DEBUG
 977         filter2bv_x( op, op->o_assertion, &fstr );
 978
 979         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 980                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 981         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 982 #endif
 983
 984         op->o_assert = ctrl->ldctl_iscritical
 985                 ? SLAP_CONTROL_CRITICAL
 986                 : SLAP_CONTROL_NONCRITICAL;
 987
 988         rs->sr_err = LDAP_SUCCESS;
 989         return LDAP_SUCCESS;
 990 }
 991
 992 static int parsePreRead (
 993         Operation *op,
 994         SlapReply *rs,
 995         LDAPControl *ctrl )
 996 {
 997         ber_len_t siz, off, i;
 998         AttributeName *an = NULL;
 999         BerElement      *ber;
1000
1001         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1002                 rs->sr_text = "preread control specified multiple times";
1003                 return LDAP_PROTOCOL_ERROR;
1004         }
1005
1006         if ( ctrl->ldctl_value.bv_len == 0 ) {
1007                 rs->sr_text = "preread control value is empty (or absent)";
1008                 return LDAP_PROTOCOL_ERROR;
1009         }
1010
1011         ber = ber_init( &(ctrl->ldctl_value) );
1012         if (ber == NULL) {
1013                 rs->sr_text = "preread control: internal error";
1014                 return LDAP_OTHER;
1015         }
1016
1017         siz = sizeof( AttributeName );
1018         off = offsetof( AttributeName, an_name );
1019         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1020                 rs->sr_text = "preread control: decoding error";
1021                 return LDAP_PROTOCOL_ERROR;
1022         }
1023
1024         for( i=0; i<siz; i++ ) {
1025                 int             rc = LDAP_SUCCESS;
1026                 const char      *dummy = NULL;
1027
1028                 an[i].an_desc = NULL;
1029                 an[i].an_oc = NULL;
1030                 an[i].an_oc_exclude = 0;
1031                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1032                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1033                         rs->sr_text = dummy
1034                                 ? dummy
1035                                 : "postread control: unknown attributeType";
1036                         return rc;
1037                 }
1038         }
1039
1040         op->o_preread = ctrl->ldctl_iscritical
1041                 ? SLAP_CONTROL_CRITICAL
1042                 : SLAP_CONTROL_NONCRITICAL;
1043
1044         op->o_preread_attrs = an;
1045
1046         rs->sr_err = LDAP_SUCCESS;
1047         return LDAP_SUCCESS;
1048 }
1049
1050 static int parsePostRead (
1051         Operation *op,
1052         SlapReply *rs,
1053         LDAPControl *ctrl )
1054 {
1055         ber_len_t siz, off, i;
1056         AttributeName *an = NULL;
1057         BerElement      *ber;
1058
1059         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1060                 rs->sr_text = "postread control specified multiple times";
1061                 return LDAP_PROTOCOL_ERROR;
1062         }
1063
1064         if ( ctrl->ldctl_value.bv_len == 0 ) {
1065                 rs->sr_text = "postread control value is empty (or absent)";
1066                 return LDAP_PROTOCOL_ERROR;
1067         }
1068
1069         ber = ber_init( &(ctrl->ldctl_value) );
1070         if (ber == NULL) {
1071                 rs->sr_text = "postread control: internal error";
1072                 return LDAP_OTHER;
1073         }
1074
1075         siz = sizeof( AttributeName );
1076         off = offsetof( AttributeName, an_name );
1077         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1078                 rs->sr_text = "postread control: decoding error";
1079                 return LDAP_PROTOCOL_ERROR;
1080         }
1081
1082         for( i=0; i<siz; i++ ) {
1083                 int             rc = LDAP_SUCCESS;
1084                 const char      *dummy = NULL;
1085
1086                 an[i].an_desc = NULL;
1087                 an[i].an_oc = NULL;
1088                 an[i].an_oc_exclude = 0;
1089                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1090                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1091                         rs->sr_text = dummy
1092                                 ? dummy
1093                                 : "postread control: unknown attributeType";
1094                         return rc;
1095                 }
1096         }
1097
1098         op->o_postread = ctrl->ldctl_iscritical
1099                 ? SLAP_CONTROL_CRITICAL
1100                 : SLAP_CONTROL_NONCRITICAL;
1101
1102         op->o_postread_attrs = an;
1103
1104         rs->sr_err = LDAP_SUCCESS;
1105         return LDAP_SUCCESS;
1106 }
1107
1108 int parseValuesReturnFilter (
1109         Operation *op,
1110         SlapReply *rs,
1111         LDAPControl *ctrl )
1112 {
1113         BerElement      *ber;
1114         struct berval   fstr = BER_BVNULL;
1115         const char *err_msg = "";
1116
1117         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1118                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1119                 return LDAP_PROTOCOL_ERROR;
1120         }
1121
1122         if ( ctrl->ldctl_value.bv_len == 0 ) {
1123                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1124                 return LDAP_PROTOCOL_ERROR;
1125         }
1126
1127         ber = ber_init( &(ctrl->ldctl_value) );
1128         if (ber == NULL) {
1129                 rs->sr_text = "internal error";
1130                 return LDAP_OTHER;
1131         }
1132
1133         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1134
1135         if( rs->sr_err != LDAP_SUCCESS ) {
1136                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1137                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1138                         send_ldap_disconnect( op, rs );
1139                         rs->sr_err = SLAPD_DISCONNECT;
1140                 } else {
1141                         send_ldap_result( op, rs );
1142                 }
1143                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1144         }
1145 #ifdef LDAP_DEBUG
1146         else {
1147                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1148         }
1149
1150         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1151                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1152         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1153 #endif
1154
1155         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1156                 ? SLAP_CONTROL_CRITICAL
1157                 : SLAP_CONTROL_NONCRITICAL;
1158
1159         rs->sr_err = LDAP_SUCCESS;
1160         return LDAP_SUCCESS;
1161 }
1162
1163 #ifdef LDAP_CONTROL_SUBENTRIES
1164 static int parseSubentries (
1165         Operation *op,
1166         SlapReply *rs,
1167         LDAPControl *ctrl )
1168 {
1169         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1170                 rs->sr_text = "subentries control specified multiple times";
1171                 return LDAP_PROTOCOL_ERROR;
1172         }
1173
1174         /* FIXME: should use BER library */
1175         if( ( ctrl->ldctl_value.bv_len != 3 )
1176                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1177                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1178         {
1179                 rs->sr_text = "subentries control value encoding is bogus";
1180                 return LDAP_PROTOCOL_ERROR;
1181         }
1182
1183         op->o_subentries = ctrl->ldctl_iscritical
1184                 ? SLAP_CONTROL_CRITICAL
1185                 : SLAP_CONTROL_NONCRITICAL;
1186
1187         if ( (void *)(ctrl->ldctl_value.bv_val[2] != 0x00))
1188                 set_subentries_visibility( op );
1189
1190         return LDAP_SUCCESS;
1191 }
1192 #endif
1193
1194 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1195 static int parsePermissiveModify (
1196         Operation *op,
1197         SlapReply *rs,
1198         LDAPControl *ctrl )
1199 {
1200         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1201                 rs->sr_text = "permissiveModify control specified multiple times";
1202                 return LDAP_PROTOCOL_ERROR;
1203         }
1204
1205         if ( ctrl->ldctl_value.bv_len ) {
1206                 rs->sr_text = "permissiveModify control value not empty";
1207                 return LDAP_PROTOCOL_ERROR;
1208         }
1209
1210         op->o_permissive_modify = ctrl->ldctl_iscritical
1211                 ? SLAP_CONTROL_CRITICAL
1212                 : SLAP_CONTROL_NONCRITICAL;
1213
1214         return LDAP_SUCCESS;
1215 }
1216 #endif
1217
1218 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1219 static int parseDomainScope (
1220         Operation *op,
1221         SlapReply *rs,
1222         LDAPControl *ctrl )
1223 {
1224         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1225                 rs->sr_text = "domainScope control specified multiple times";
1226                 return LDAP_PROTOCOL_ERROR;
1227         }
1228
1229         if ( ctrl->ldctl_value.bv_len ) {
1230                 rs->sr_text = "domainScope control value not empty";
1231                 return LDAP_PROTOCOL_ERROR;
1232         }
1233
1234         op->o_domain_scope = ctrl->ldctl_iscritical
1235                 ? SLAP_CONTROL_CRITICAL
1236                 : SLAP_CONTROL_NONCRITICAL;
1237
1238         return LDAP_SUCCESS;
1239 }
1240 #endif
1241
1242 #ifdef LDAP_CONTROL_X_TREE_DELETE
1243 static int parseTreeDelete (
1244         Operation *op,
1245         SlapReply *rs,
1246         LDAPControl *ctrl )
1247 {
1248         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1249                 rs->sr_text = "treeDelete control specified multiple times";
1250                 return LDAP_PROTOCOL_ERROR;
1251         }
1252
1253         if ( ctrl->ldctl_value.bv_len ) {
1254                 rs->sr_text = "treeDelete control value not empty";
1255                 return LDAP_PROTOCOL_ERROR;
1256         }
1257
1258         op->o_tree_delete = ctrl->ldctl_iscritical
1259                 ? SLAP_CONTROL_CRITICAL
1260                 : SLAP_CONTROL_NONCRITICAL;
1261
1262         return LDAP_SUCCESS;
1263 }
1264 #endif
1265
1266 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1267 static int parseSearchOptions (
1268         Operation *op,
1269         SlapReply *rs,
1270         LDAPControl *ctrl )
1271 {
1272         BerElement *ber;
1273         ber_int_t search_flags;
1274
1275         if ( ctrl->ldctl_value.bv_len == 0 ) {
1276                 rs->sr_text = "searchOptions control value not empty";
1277                 return LDAP_PROTOCOL_ERROR;
1278         }
1279
1280         ber = ber_init( &ctrl->ldctl_value );
1281         if( ber == NULL ) {
1282                 rs->sr_text = "internal error";
1283                 return LDAP_OTHER;
1284         }
1285
1286         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1287                 rs->sr_text = "searchOptions control decoding error";
1288                 return LDAP_PROTOCOL_ERROR;
1289         }
1290
1291         (void) ber_free( ber, 1 );
1292
1293         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1294                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1295                         rs->sr_text = "searchOptions control specified multiple times "
1296                                 "or with domainScope control";
1297                         return LDAP_PROTOCOL_ERROR;
1298                 }
1299
1300                 op->o_domain_scope = ctrl->ldctl_iscritical
1301                         ? SLAP_CONTROL_CRITICAL
1302                         : SLAP_CONTROL_NONCRITICAL;
1303         }
1304
1305         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1306                 /* Other search flags not recognised so far,
1307                  * including:
1308                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1309                  */
1310                 rs->sr_text = "searchOptions contained unrecongized flag";
1311                 return LDAP_UNWILLING_TO_PERFORM;
1312         }
1313
1314         return LDAP_SUCCESS;
1315 }
1316 #endif
1317