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 1998-2006 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 #ifdef LDAP_DEVEL
  32 static SLAP_CTRL_PARSE_FN parseDontUseCopy;
  33 static SLAP_CTRL_PARSE_FN parseManageDIT;
  34 #endif
  35 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  36 static SLAP_CTRL_PARSE_FN parseNoOp;
  37 static SLAP_CTRL_PARSE_FN parsePagedResults;
  38 #ifdef LDAP_DEVEL
  39 static SLAP_CTRL_PARSE_FN parseSortedResults;
  40 #endif
  41 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  42 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  43 static SLAP_CTRL_PARSE_FN parseDomainScope;
  44 #ifdef SLAP_CONTROL_X_TREE_DELETE
  45 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  46 #endif
  47 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  48 static SLAP_CTRL_PARSE_FN parseSubentries;
  49
  50 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  51
  52 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  53 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  54
  55 struct slap_control_ids slap_cids;
  56
  57 struct slap_control {
  58         /* Control OID */
  59         char *sc_oid;
  60
  61         /* The controlID for this control */
  62         int sc_cid;
  63
  64         /* Operations supported by control */
  65         slap_mask_t sc_mask;
  66
  67         /* Extended operations supported by control */
  68         char **sc_extendedops;
  69
  70         /* Control parsing callback */
  71         SLAP_CTRL_PARSE_FN *sc_parse;
  72
  73         LDAP_SLIST_ENTRY(slap_control) sc_next;
  74 };
  75
  76 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  77         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  78
  79 /*
  80  * all known request control OIDs should be added to this list
  81  */
  82 /*
  83  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  84  * addresses an undefined control; this allows to safely test for
  85  * well known controls even if they are not registered, e.g. if
  86  * they get moved to modules.  An example is sc_LDAPsync, which
  87  * is implemented in the syncprov overlay and thus, if configured
  88  * as dynamic module, may not be registered.  One side effect is that
  89  * slap_known_controls[0] == NULL, so it should always be used
  90  * starting from 1.
  91  * FIXME: should we define the "undefined control" oid?
  92  */
  93 char *slap_known_controls[SLAP_MAX_CIDS+1];
  94 static int num_known_controls = 1;
  95
  96 static char *proxy_authz_extops[] = {
  97         LDAP_EXOP_MODIFY_PASSWD,
  98         LDAP_EXOP_X_WHO_AM_I,
  99         NULL
 100 };
 101
 102 static struct slap_control control_defs[] = {
 103         {  LDAP_CONTROL_ASSERT,
 104                 (int)offsetof(struct slap_control_ids, sc_assert),
 105                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME|
 106                         SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH, NULL,
 107                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 108         { LDAP_CONTROL_PRE_READ,
 109                 (int)offsetof(struct slap_control_ids, sc_preRead),
 110                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 111                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 112         { LDAP_CONTROL_POST_READ,
 113                 (int)offsetof(struct slap_control_ids, sc_postRead),
 114                 SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 115                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 116         { LDAP_CONTROL_VALUESRETURNFILTER,
 117                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 118                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 119                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 120         { LDAP_CONTROL_PAGEDRESULTS,
 121                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 122                 SLAP_CTRL_SEARCH, NULL,
 123                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 124 #ifdef LDAP_DEVEL
 125         { LDAP_CONTROL_SORTREQUEST,
 126                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 127                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 128                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 129 #endif
 130         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 131                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 132                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 133                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 134         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 135                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 136                 SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE, NULL,
 137                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 138 #ifdef SLAP_CONTROL_X_TREE_DELETE
 139         { LDAP_CONTROL_X_TREE_DELETE,
 140                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 141                 SLAP_CTRL_DELETE|SLAP_CTRL_HIDE, NULL,
 142                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 143 #endif
 144         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 145                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 146                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 147                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 148         { LDAP_CONTROL_SUBENTRIES,
 149                 (int)offsetof(struct slap_control_ids, sc_subentries),
 150                 SLAP_CTRL_SEARCH, NULL,
 151                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 152         { LDAP_CONTROL_NOOP,
 153                 (int)offsetof(struct slap_control_ids, sc_noOp),
 154                 SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE, NULL,
 155                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 156 #ifdef LDAP_DEVEL
 157         { LDAP_CONTROL_DONTUSECOPY,
 158                 (int)offsetof(struct slap_control_ids, sc_dontUseCopy),
 159                 SLAP_CTRL_INTROGATE|SLAP_CTRL_HIDE, NULL,
 160                 parseDontUseCopy, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 161         { LDAP_CONTROL_MANAGEDIT,
 162                 (int)offsetof(struct slap_control_ids, sc_manageDIT),
 163                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE, NULL,
 164                 parseManageDIT, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 165 #endif
 166         { LDAP_CONTROL_MANAGEDSAIT,
 167                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 168                 SLAP_CTRL_ACCESS, NULL,
 169                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 170         { LDAP_CONTROL_PROXY_AUTHZ,
 171                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 172                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
 173                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 174         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 175 };
 176
 177 /*
 178  * Register a supported control.
 179  *
 180  * This can be called by an OpenLDAP plugin or, indirectly, by a
 181  * SLAPI plugin calling slapi_register_supported_control().
 182  */
 183 int
 184 register_supported_control(const char *controloid,
 185         slap_mask_t controlmask,
 186         char **controlexops,
 187         SLAP_CTRL_PARSE_FN *controlparsefn,
 188         int *controlcid)
 189 {
 190         struct slap_control *sc;
 191         int i;
 192
 193         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 194                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 195                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 196                 SLAP_MAX_CIDS, 0, 0 );
 197                 return LDAP_OTHER;
 198         }
 199
 200         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 201
 202         /* sanity check - should never happen */
 203         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 204                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 205                         Debug( LDAP_DEBUG_ANY,
 206                                 "Control %s already registered.\n",
 207                                 controloid, 0, 0 );
 208                         return LDAP_PARAM_ERROR;
 209                 }
 210         }
 211
 212         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 213         if ( sc == NULL ) return LDAP_NO_MEMORY;
 214
 215         sc->sc_oid = ch_strdup( controloid );
 216         sc->sc_mask = controlmask;
 217         if ( controlexops != NULL ) {
 218                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 219                 if ( sc->sc_extendedops == NULL ) {
 220                         ch_free( sc );
 221                         return LDAP_NO_MEMORY;
 222                 }
 223         } else {
 224                 sc->sc_extendedops = NULL;
 225         }
 226         sc->sc_parse = controlparsefn;
 227
 228         if ( controlcid ) *controlcid = num_known_controls;
 229         sc->sc_cid = num_known_controls;
 230
 231         /* Update slap_known_controls, too. */
 232         slap_known_controls[num_known_controls-1] = sc->sc_oid;
 233         slap_known_controls[num_known_controls++] = NULL;
 234
 235         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 236         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 237         return LDAP_SUCCESS;
 238 }
 239
 240 /*
 241  * One-time initialization of internal controls.
 242  */
 243 int
 244 slap_controls_init( void )
 245 {
 246         int i, rc;
 247
 248         rc = LDAP_SUCCESS;
 249
 250         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 251                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 252                 rc = register_supported_control( control_defs[i].sc_oid,
 253                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 254                         control_defs[i].sc_parse, cid );
 255                 if ( rc != LDAP_SUCCESS ) break;
 256         }
 257
 258         return rc;
 259 }
 260
 261 /*
 262  * Free memory associated with list of supported controls.
 263  */
 264 void
 265 controls_destroy( void )
 266 {
 267         struct slap_control *sc;
 268
 269         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 270                 sc = LDAP_SLIST_FIRST(&controls_list);
 271                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 272
 273                 ch_free( sc->sc_oid );
 274                 if ( sc->sc_extendedops != NULL ) {
 275                         ldap_charray_free( sc->sc_extendedops );
 276                 }
 277                 ch_free( sc );
 278         }
 279 }
 280
 281 /*
 282  * Format the supportedControl attribute of the root DSE,
 283  * detailing which controls are supported by the directory
 284  * server.
 285  */
 286 int
 287 controls_root_dse_info( Entry *e )
 288 {
 289         AttributeDescription *ad_supportedControl
 290                 = slap_schema.si_ad_supportedControl;
 291         struct berval vals[2];
 292         struct slap_control *sc;
 293
 294         vals[1].bv_val = NULL;
 295         vals[1].bv_len = 0;
 296
 297         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 298                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 299
 300                 vals[0].bv_val = sc->sc_oid;
 301                 vals[0].bv_len = strlen( sc->sc_oid );
 302
 303                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 304                         return -1;
 305                 }
 306         }
 307
 308         return 0;
 309 }
 310
 311 /*
 312  * Return a list of OIDs and operation masks for supported
 313  * controls. Used by SLAPI.
 314  */
 315 int
 316 get_supported_controls(char ***ctrloidsp,
 317         slap_mask_t **ctrlmasks)
 318 {
 319         int n;
 320         char **oids;
 321         slap_mask_t *masks;
 322         struct slap_control *sc;
 323
 324         n = 0;
 325
 326         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 327                 n++;
 328         }
 329
 330         if ( n == 0 ) {
 331                 *ctrloidsp = NULL;
 332                 *ctrlmasks = NULL;
 333                 return LDAP_SUCCESS;
 334         }
 335
 336         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 337         if ( oids == NULL ) {
 338                 return LDAP_NO_MEMORY;
 339         }
 340         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 341         if  ( masks == NULL ) {
 342                 ch_free( oids );
 343                 return LDAP_NO_MEMORY;
 344         }
 345
 346         n = 0;
 347
 348         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 349                 oids[n] = ch_strdup( sc->sc_oid );
 350                 masks[n] = sc->sc_mask;
 351                 n++;
 352         }
 353         oids[n] = NULL;
 354         masks[n] = 0;
 355
 356         *ctrloidsp = oids;
 357         *ctrlmasks = masks;
 358
 359         return LDAP_SUCCESS;
 360 }
 361
 362 /*
 363  * Find a control given its OID.
 364  */
 365 static struct slap_control *
 366 find_ctrl( const char *oid )
 367 {
 368         struct slap_control *sc;
 369
 370         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 371                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 372                         return sc;
 373                 }
 374         }
 375
 376         return NULL;
 377 }
 378
 379 int
 380 slap_find_control_id(
 381         const char *oid,
 382         int *cid )
 383 {
 384         struct slap_control *ctrl = find_ctrl( oid );
 385         if ( ctrl ) {
 386                 if ( cid ) *cid = ctrl->sc_cid;
 387                 return LDAP_SUCCESS;
 388         }
 389         return LDAP_CONTROL_NOT_FOUND;
 390 }
 391
 392 int
 393 slap_global_control( Operation *op, const char *oid, int *cid )
 394 {
 395         struct slap_control *ctrl = find_ctrl( oid );
 396
 397         if ( ctrl == NULL ) {
 398                 /* should not be reachable */
 399                 Debug( LDAP_DEBUG_ANY,
 400                         "slap_global_control: unrecognized control: %s\n",
 401                         oid, 0, 0 );
 402                 return LDAP_CONTROL_NOT_FOUND;
 403         }
 404
 405         if ( cid ) *cid = ctrl->sc_cid;
 406
 407         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 408                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 409                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 410         {
 411                 return LDAP_COMPARE_TRUE;
 412         }
 413
 414         Debug( LDAP_DEBUG_TRACE,
 415                 "slap_global_control: unavailable control: %s\n",
 416                 oid, 0, 0 );
 417
 418         return LDAP_COMPARE_FALSE;
 419 }
 420
 421 void slap_free_ctrls(
 422         Operation *op,
 423         LDAPControl **ctrls )
 424 {
 425         int i;
 426
 427         for (i=0; ctrls[i]; i++) {
 428                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 429         }
 430         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 431 }
 432
 433 int slap_parse_ctrl(
 434         Operation *op,
 435         SlapReply *rs,
 436         LDAPControl *control,
 437         const char **text )
 438 {
 439         struct slap_control *sc;
 440
 441         sc = find_ctrl( control->ldctl_oid );
 442         if( sc != NULL ) {
 443                 /* recognized control */
 444                 slap_mask_t tagmask;
 445                 switch( op->o_tag ) {
 446                 case LDAP_REQ_ADD:
 447                         tagmask = SLAP_CTRL_ADD;
 448                         break;
 449                 case LDAP_REQ_BIND:
 450                         tagmask = SLAP_CTRL_BIND;
 451                         break;
 452                 case LDAP_REQ_COMPARE:
 453                         tagmask = SLAP_CTRL_COMPARE;
 454                         break;
 455                 case LDAP_REQ_DELETE:
 456                         tagmask = SLAP_CTRL_DELETE;
 457                         break;
 458                 case LDAP_REQ_MODIFY:
 459                         tagmask = SLAP_CTRL_MODIFY;
 460                         break;
 461                 case LDAP_REQ_RENAME:
 462                         tagmask = SLAP_CTRL_RENAME;
 463                         break;
 464                 case LDAP_REQ_SEARCH:
 465                         tagmask = SLAP_CTRL_SEARCH;
 466                         break;
 467                 case LDAP_REQ_UNBIND:
 468                         tagmask = SLAP_CTRL_UNBIND;
 469                         break;
 470                 case LDAP_REQ_ABANDON:
 471                         tagmask = SLAP_CTRL_ABANDON;
 472                         break;
 473                 case LDAP_REQ_EXTENDED:
 474                         tagmask=~0L;
 475                         assert( op->ore_reqoid.bv_val != NULL );
 476                         if( sc->sc_extendedops != NULL ) {
 477                                 int i;
 478                                 for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 479                                         if( strcmp( op->ore_reqoid.bv_val,
 480                                                 sc->sc_extendedops[i] ) == 0 )
 481                                         {
 482                                                 tagmask=0L;
 483                                                 break;
 484                                         }
 485                                 }
 486                         }
 487                         break;
 488                 default:
 489                         *text = "controls internal error";
 490                         return LDAP_OTHER;
 491                 }
 492
 493                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 494                         /* available extension */
 495                         int     rc;
 496
 497                         if( !sc->sc_parse ) {
 498                                 *text = "not yet implemented";
 499                                 return LDAP_OTHER;
 500                         }
 501
 502                         rc = sc->sc_parse( op, rs, control );
 503                         if ( rc ) {
 504                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 505                                 return rc;
 506                         }
 507
 508                 } else if( control->ldctl_iscritical ) {
 509                         /* unavailable CRITICAL control */
 510                         *text = "critical extension is unavailable";
 511                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 512                 }
 513         } else if( control->ldctl_iscritical ) {
 514                 /* unrecognized CRITICAL control */
 515                 *text = "critical extension is not recognized";
 516                 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 517         }
 518
 519         return LDAP_SUCCESS;
 520 }
 521
 522 int get_ctrls(
 523         Operation *op,
 524         SlapReply *rs,
 525         int sendres )
 526 {
 527         int nctrls = 0;
 528         ber_tag_t tag;
 529         ber_len_t len;
 530         char *opaque;
 531         BerElement *ber = op->o_ber;
 532         struct berval bv;
 533
 534         len = ber_pvt_ber_remaining(ber);
 535
 536         if( len == 0) {
 537                 /* no controls */
 538                 rs->sr_err = LDAP_SUCCESS;
 539                 return rs->sr_err;
 540         }
 541
 542         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 543                 if( tag == LBER_ERROR ) {
 544                         rs->sr_err = SLAPD_DISCONNECT;
 545                         rs->sr_text = "unexpected data in PDU";
 546                 }
 547
 548                 goto return_results;
 549         }
 550
 551         Debug( LDAP_DEBUG_TRACE,
 552                 "=> get_ctrls\n", 0, 0, 0 );
 553
 554         if( op->o_protocol < LDAP_VERSION3 ) {
 555                 rs->sr_err = SLAPD_DISCONNECT;
 556                 rs->sr_text = "controls require LDAPv3";
 557                 goto return_results;
 558         }
 559
 560         /* one for first control, one for termination */
 561         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 562
 563 #if 0
 564         if( op->ctrls == NULL ) {
 565                 rs->sr_err = LDAP_NO_MEMORY;
 566                 rs->sr_text = "no memory";
 567                 goto return_results;
 568         }
 569 #endif
 570
 571         op->o_ctrls[nctrls] = NULL;
 572
 573         /* step through each element */
 574         for( tag = ber_first_element( ber, &len, &opaque );
 575                 tag != LBER_ERROR;
 576                 tag = ber_next_element( ber, &len, opaque ) )
 577         {
 578                 LDAPControl *c;
 579                 LDAPControl **tctrls;
 580
 581                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 582                 memset(c, 0, sizeof(LDAPControl));
 583
 584                 /* allocate pointer space for current controls (nctrls)
 585                  * + this control + extra NULL
 586                  */
 587                 tctrls = op->o_tmprealloc( op->o_ctrls,
 588                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 589
 590 #if 0
 591                 if( tctrls == NULL ) {
 592                         ch_free( c );
 593                         ldap_controls_free(op->o_ctrls);
 594                         op->o_ctrls = NULL;
 595
 596                         rs->sr_err = LDAP_NO_MEMORY;
 597                         rs->sr_text = "no memory";
 598                         goto return_results;
 599                 }
 600 #endif
 601                 op->o_ctrls = tctrls;
 602
 603                 op->o_ctrls[nctrls++] = c;
 604                 op->o_ctrls[nctrls] = NULL;
 605
 606                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 607                 c->ldctl_oid = bv.bv_val;
 608
 609                 if( tag == LBER_ERROR ) {
 610                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 611                                 0, 0, 0 );
 612
 613                         slap_free_ctrls( op, op->o_ctrls );
 614                         op->o_ctrls = NULL;
 615                         rs->sr_err = SLAPD_DISCONNECT;
 616                         rs->sr_text = "decoding controls error";
 617                         goto return_results;
 618
 619                 } else if( c->ldctl_oid == NULL ) {
 620                         Debug( LDAP_DEBUG_TRACE,
 621                                 "get_ctrls: conn %lu got emtpy OID.\n",
 622                                 op->o_connid, 0, 0 );
 623
 624                         slap_free_ctrls( op, op->o_ctrls );
 625                         op->o_ctrls = NULL;
 626                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 627                         rs->sr_text = "OID field is empty";
 628                         goto return_results;
 629                 }
 630
 631                 tag = ber_peek_tag( ber, &len );
 632
 633                 if( tag == LBER_BOOLEAN ) {
 634                         ber_int_t crit;
 635                         tag = ber_scanf( ber, "b", &crit );
 636
 637                         if( tag == LBER_ERROR ) {
 638                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 639                                         0, 0, 0 );
 640                                 slap_free_ctrls( op, op->o_ctrls );
 641                                 op->o_ctrls = NULL;
 642                                 rs->sr_err = SLAPD_DISCONNECT;
 643                                 rs->sr_text = "decoding controls error";
 644                                 goto return_results;
 645                         }
 646
 647                         c->ldctl_iscritical = (crit != 0);
 648                         tag = ber_peek_tag( ber, &len );
 649                 }
 650
 651                 if( tag == LBER_OCTETSTRING ) {
 652                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 653
 654                         if( tag == LBER_ERROR ) {
 655                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 656                                         "%s (%scritical): get value failed.\n",
 657                                         op->o_connid, c->ldctl_oid,
 658                                         c->ldctl_iscritical ? "" : "non" );
 659                                 slap_free_ctrls( op, op->o_ctrls );
 660                                 op->o_ctrls = NULL;
 661                                 rs->sr_err = SLAPD_DISCONNECT;
 662                                 rs->sr_text = "decoding controls error";
 663                                 goto return_results;
 664                         }
 665                 }
 666
 667                 Debug( LDAP_DEBUG_TRACE,
 668                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 669                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 670
 671                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 672                 if ( rs->sr_err != LDAP_SUCCESS ) {
 673                         goto return_results;
 674                 }
 675         }
 676
 677 return_results:
 678         Debug( LDAP_DEBUG_TRACE,
 679                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 680                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 681
 682         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 683                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 684                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 685                         send_ldap_disconnect( op, rs );
 686                         rs->sr_err = SLAPD_DISCONNECT;
 687                 } else {
 688                         send_ldap_result( op, rs );
 689                 }
 690         }
 691
 692         return rs->sr_err;
 693 }
 694
 695 int
 696 slap_remove_control(
 697         Operation       *op,
 698         SlapReply       *rs,
 699         int             ctrl,
 700         BI_chk_controls fnc )
 701 {
 702         int             i, j;
 703
 704         switch ( op->o_ctrlflag[ ctrl ] ) {
 705         case SLAP_CONTROL_NONCRITICAL:
 706                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 707                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 708                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 709                         {
 710                                 j = i;
 711                         }
 712                 }
 713
 714                 if ( j == -1 ) {
 715                         rs->sr_err = LDAP_OTHER;
 716                         break;
 717                 }
 718
 719                 if ( fnc ) {
 720                         (void)fnc( op, rs );
 721                 }
 722
 723                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 724
 725                 if ( i > 1 ) {
 726                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 727                                 ( i - j ) * sizeof( LDAPControl * ) );
 728
 729                 } else {
 730                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
 731                         op->o_ctrls = NULL;
 732                 }
 733
 734                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
 735
 736                 Debug( LDAP_DEBUG_ANY, "%s: "
 737                         "non-critical control \"%s\" not supported; stripped.\n",
 738                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 739                 /* fall thru */
 740
 741         case SLAP_CONTROL_IGNORED:
 742         case SLAP_CONTROL_NONE:
 743                 rs->sr_err = SLAP_CB_CONTINUE;
 744                 break;
 745
 746         case SLAP_CONTROL_CRITICAL:
 747                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 748                 if ( fnc ) {
 749                         (void)fnc( op, rs );
 750                 }
 751                 Debug( LDAP_DEBUG_ANY, "%s: "
 752                         "critical control \"%s\" not supported.\n",
 753                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 754                 break;
 755
 756         default:
 757                 /* handle all cases! */
 758                 assert( 0 );
 759         }
 760
 761         return rs->sr_err;
 762 }
 763
 764 #ifdef LDAP_DEVEL
 765 static int parseDontUseCopy (
 766         Operation *op,
 767         SlapReply *rs,
 768         LDAPControl *ctrl )
 769 {
 770         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
 771                 rs->sr_text = "dontUseCopy control specified multiple times";
 772                 return LDAP_PROTOCOL_ERROR;
 773         }
 774
 775         if ( ctrl->ldctl_value.bv_len ) {
 776                 rs->sr_text = "dontUseCopy control value not empty";
 777                 return LDAP_PROTOCOL_ERROR;
 778         }
 779
 780         if ( ctrl->ldctl_iscritical != SLAP_CONTROL_CRITICAL ) {
 781                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
 782                 return LDAP_PROTOCOL_ERROR;
 783         }
 784
 785         op->o_dontUseCopy = SLAP_CONTROL_CRITICAL;
 786         return LDAP_SUCCESS;
 787 }
 788
 789 static int parseManageDIT (
 790         Operation *op,
 791         SlapReply *rs,
 792         LDAPControl *ctrl )
 793 {
 794         if ( op->o_managedit != SLAP_CONTROL_NONE ) {
 795                 rs->sr_text = "manageDIT control specified multiple times";
 796                 return LDAP_PROTOCOL_ERROR;
 797         }
 798
 799         if ( ctrl->ldctl_value.bv_len ) {
 800                 rs->sr_text = "manageDIT control value not empty";
 801                 return LDAP_PROTOCOL_ERROR;
 802         }
 803
 804         op->o_managedit = ctrl->ldctl_iscritical
 805                 ? SLAP_CONTROL_CRITICAL
 806                 : SLAP_CONTROL_NONCRITICAL;
 807
 808         return LDAP_SUCCESS;
 809 }
 810 #endif
 811
 812 static int parseManageDSAit (
 813         Operation *op,
 814         SlapReply *rs,
 815         LDAPControl *ctrl )
 816 {
 817         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 818                 rs->sr_text = "manageDSAit control specified multiple times";
 819                 return LDAP_PROTOCOL_ERROR;
 820         }
 821
 822         if ( ctrl->ldctl_value.bv_len ) {
 823                 rs->sr_text = "manageDSAit control value not empty";
 824                 return LDAP_PROTOCOL_ERROR;
 825         }
 826
 827         op->o_managedsait = ctrl->ldctl_iscritical
 828                 ? SLAP_CONTROL_CRITICAL
 829                 : SLAP_CONTROL_NONCRITICAL;
 830
 831         return LDAP_SUCCESS;
 832 }
 833
 834 static int parseProxyAuthz (
 835         Operation *op,
 836         SlapReply *rs,
 837         LDAPControl *ctrl )
 838 {
 839         int             rc;
 840         struct berval   dn = BER_BVNULL;
 841
 842         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 843                 rs->sr_text = "proxy authorization control specified multiple times";
 844                 return LDAP_PROTOCOL_ERROR;
 845         }
 846
 847         op->o_proxy_authz = ctrl->ldctl_iscritical
 848                 ? SLAP_CONTROL_CRITICAL
 849                 : SLAP_CONTROL_NONCRITICAL;
 850
 851         Debug( LDAP_DEBUG_ARGS,
 852                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 853                 op->o_connid,
 854                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 855                 0 );
 856
 857         if ( ctrl->ldctl_value.bv_len == 0 ) {
 858                 Debug( LDAP_DEBUG_TRACE,
 859                         "parseProxyAuthz: conn=%lu anonymous\n",
 860                         op->o_connid, 0, 0 );
 861
 862                 /* anonymous */
 863                 op->o_ndn.bv_val[ 0 ] = '\0';
 864                 op->o_ndn.bv_len = 0;
 865
 866                 op->o_dn.bv_val[ 0 ] = '\0';
 867                 op->o_dn.bv_len = 0;
 868
 869                 return LDAP_SUCCESS;
 870         }
 871
 872         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 873                         NULL, &dn, SLAP_GETDN_AUTHZID );
 874
 875         /* FIXME: empty DN in proxyAuthz control should be legal... */
 876         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 877                 if ( dn.bv_val ) {
 878                         ch_free( dn.bv_val );
 879                 }
 880                 rs->sr_text = "authzId mapping failed";
 881                 return LDAP_PROXY_AUTHZ_FAILURE;
 882         }
 883
 884         Debug( LDAP_DEBUG_TRACE,
 885                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 886                 op->o_connid,
 887                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 888
 889         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 890
 891         if ( rc ) {
 892                 ch_free( dn.bv_val );
 893                 rs->sr_text = "not authorized to assume identity";
 894                 return LDAP_PROXY_AUTHZ_FAILURE;
 895         }
 896
 897         ch_free( op->o_ndn.bv_val );
 898         ch_free( op->o_dn.bv_val );
 899
 900         /*
 901          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 902          * from now on op->o_dn is normalized
 903          */
 904         op->o_ndn = dn;
 905         ber_dupbv( &op->o_dn, &dn );
 906
 907
 908         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 909             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 910
 911         return LDAP_SUCCESS;
 912 }
 913
 914 static int parseNoOp (
 915         Operation *op,
 916         SlapReply *rs,
 917         LDAPControl *ctrl )
 918 {
 919         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 920                 rs->sr_text = "noop control specified multiple times";
 921                 return LDAP_PROTOCOL_ERROR;
 922         }
 923
 924         if ( ctrl->ldctl_value.bv_len ) {
 925                 rs->sr_text = "noop control value not empty";
 926                 return LDAP_PROTOCOL_ERROR;
 927         }
 928
 929         op->o_noop = ctrl->ldctl_iscritical
 930                 ? SLAP_CONTROL_CRITICAL
 931                 : SLAP_CONTROL_NONCRITICAL;
 932
 933         return LDAP_SUCCESS;
 934 }
 935
 936 static int parsePagedResults (
 937         Operation *op,
 938         SlapReply *rs,
 939         LDAPControl *ctrl )
 940 {
 941         int             rc = LDAP_SUCCESS;
 942         ber_tag_t       tag;
 943         ber_int_t       size;
 944         BerElement      *ber;
 945         struct berval   cookie = BER_BVNULL;
 946         PagedResultsState       *ps;
 947
 948         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 949                 rs->sr_text = "paged results control specified multiple times";
 950                 return LDAP_PROTOCOL_ERROR;
 951         }
 952
 953         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 954                 rs->sr_text = "paged results control value is empty (or absent)";
 955                 return LDAP_PROTOCOL_ERROR;
 956         }
 957
 958         /* Parse the control value
 959          *      realSearchControlValue ::= SEQUENCE {
 960          *              size    INTEGER (0..maxInt),
 961          *                              -- requested page size from client
 962          *                              -- result set size estimate from server
 963          *              cookie  OCTET STRING
 964          * }
 965          */
 966         ber = ber_init( &ctrl->ldctl_value );
 967         if ( ber == NULL ) {
 968                 rs->sr_text = "internal error";
 969                 return LDAP_OTHER;
 970         }
 971
 972         tag = ber_scanf( ber, "{im}", &size, &cookie );
 973
 974         if ( tag == LBER_ERROR ) {
 975                 rs->sr_text = "paged results control could not be decoded";
 976                 rc = LDAP_PROTOCOL_ERROR;
 977                 goto done;
 978         }
 979
 980         if ( size < 0 ) {
 981                 rs->sr_text = "paged results control size invalid";
 982                 rc = LDAP_PROTOCOL_ERROR;
 983                 goto done;
 984         }
 985
 986         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 987         *ps = op->o_conn->c_pagedresults_state;
 988         ps->ps_size = size;
 989         op->o_pagedresults_state = ps;
 990
 991         /* NOTE: according to RFC 2696 3.:
 992
 993     If the page size is greater than or equal to the sizeLimit value, the
 994     server should ignore the control as the request can be satisfied in a
 995     single page.
 996
 997          * NOTE: this assumes that the op->ors_slimit be set
 998          * before the controls are parsed.
 999          */
1000
1001         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1002                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1003
1004         } else if ( ctrl->ldctl_iscritical ) {
1005                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1006
1007         } else {
1008                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1009         }
1010
1011 done:;
1012         (void)ber_free( ber, 1 );
1013         return rc;
1014 }
1015
1016 #ifdef LDAP_DEVEL
1017 static int parseSortedResults (
1018         Operation *op,
1019         SlapReply *rs,
1020         LDAPControl *ctrl )
1021 {
1022         int             rc = LDAP_SUCCESS;
1023
1024         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1025                 rs->sr_text = "sorted results control specified multiple times";
1026                 return LDAP_PROTOCOL_ERROR;
1027         }
1028
1029         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1030                 rs->sr_text = "sorted results control value is empty (or absent)";
1031                 return LDAP_PROTOCOL_ERROR;
1032         }
1033
1034         /* blow off parsing the value */
1035
1036         op->o_sortedresults = ctrl->ldctl_iscritical
1037                 ? SLAP_CONTROL_CRITICAL
1038                 : SLAP_CONTROL_NONCRITICAL;
1039
1040         return rc;
1041 }
1042 #endif
1043
1044 static int parseAssert (
1045         Operation *op,
1046         SlapReply *rs,
1047         LDAPControl *ctrl )
1048 {
1049         BerElement      *ber;
1050         struct berval   fstr = BER_BVNULL;
1051
1052         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1053                 rs->sr_text = "assert control specified multiple times";
1054                 return LDAP_PROTOCOL_ERROR;
1055         }
1056
1057         if ( ctrl->ldctl_value.bv_len == 0 ) {
1058                 rs->sr_text = "assert control value is empty (or absent)";
1059                 return LDAP_PROTOCOL_ERROR;
1060         }
1061
1062         ber = ber_init( &(ctrl->ldctl_value) );
1063         if (ber == NULL) {
1064                 rs->sr_text = "assert control: internal error";
1065                 return LDAP_OTHER;
1066         }
1067
1068         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1069                 &rs->sr_text);
1070         if( rs->sr_err != LDAP_SUCCESS ) {
1071                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1072                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1073                         send_ldap_disconnect( op, rs );
1074                         rs->sr_err = SLAPD_DISCONNECT;
1075                 } else {
1076                         send_ldap_result( op, rs );
1077                 }
1078                 if( op->o_assertion != NULL ) {
1079                         filter_free_x( op, op->o_assertion );
1080                 }
1081                 return rs->sr_err;
1082         }
1083
1084 #ifdef LDAP_DEBUG
1085         filter2bv_x( op, op->o_assertion, &fstr );
1086
1087         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1088                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1089         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1090 #endif
1091
1092         op->o_assert = ctrl->ldctl_iscritical
1093                 ? SLAP_CONTROL_CRITICAL
1094                 : SLAP_CONTROL_NONCRITICAL;
1095
1096         rs->sr_err = LDAP_SUCCESS;
1097         return LDAP_SUCCESS;
1098 }
1099
1100 static int parsePreRead (
1101         Operation *op,
1102         SlapReply *rs,
1103         LDAPControl *ctrl )
1104 {
1105         ber_len_t siz, off, i;
1106         AttributeName *an = NULL;
1107         BerElement      *ber;
1108
1109         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1110                 rs->sr_text = "preread control specified multiple times";
1111                 return LDAP_PROTOCOL_ERROR;
1112         }
1113
1114         if ( ctrl->ldctl_value.bv_len == 0 ) {
1115                 rs->sr_text = "preread control value is empty (or absent)";
1116                 return LDAP_PROTOCOL_ERROR;
1117         }
1118
1119         ber = ber_init( &(ctrl->ldctl_value) );
1120         if (ber == NULL) {
1121                 rs->sr_text = "preread control: internal error";
1122                 return LDAP_OTHER;
1123         }
1124
1125         siz = sizeof( AttributeName );
1126         off = offsetof( AttributeName, an_name );
1127         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1128                 rs->sr_text = "preread control: decoding error";
1129                 return LDAP_PROTOCOL_ERROR;
1130         }
1131
1132         for( i=0; i<siz; i++ ) {
1133                 int             rc = LDAP_SUCCESS;
1134                 const char      *dummy = NULL;
1135
1136                 an[i].an_desc = NULL;
1137                 an[i].an_oc = NULL;
1138                 an[i].an_oc_exclude = 0;
1139                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1140                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1141                         rs->sr_text = dummy
1142                                 ? dummy
1143                                 : "postread control: unknown attributeType";
1144                         return rc;
1145                 }
1146         }
1147
1148         op->o_preread = ctrl->ldctl_iscritical
1149                 ? SLAP_CONTROL_CRITICAL
1150                 : SLAP_CONTROL_NONCRITICAL;
1151
1152         op->o_preread_attrs = an;
1153
1154         rs->sr_err = LDAP_SUCCESS;
1155         return LDAP_SUCCESS;
1156 }
1157
1158 static int parsePostRead (
1159         Operation *op,
1160         SlapReply *rs,
1161         LDAPControl *ctrl )
1162 {
1163         ber_len_t siz, off, i;
1164         AttributeName *an = NULL;
1165         BerElement      *ber;
1166
1167         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1168                 rs->sr_text = "postread control specified multiple times";
1169                 return LDAP_PROTOCOL_ERROR;
1170         }
1171
1172         if ( ctrl->ldctl_value.bv_len == 0 ) {
1173                 rs->sr_text = "postread control value is empty (or absent)";
1174                 return LDAP_PROTOCOL_ERROR;
1175         }
1176
1177         ber = ber_init( &(ctrl->ldctl_value) );
1178         if (ber == NULL) {
1179                 rs->sr_text = "postread control: internal error";
1180                 return LDAP_OTHER;
1181         }
1182
1183         siz = sizeof( AttributeName );
1184         off = offsetof( AttributeName, an_name );
1185         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1186                 rs->sr_text = "postread control: decoding error";
1187                 return LDAP_PROTOCOL_ERROR;
1188         }
1189
1190         for( i=0; i<siz; i++ ) {
1191                 int             rc = LDAP_SUCCESS;
1192                 const char      *dummy = NULL;
1193
1194                 an[i].an_desc = NULL;
1195                 an[i].an_oc = NULL;
1196                 an[i].an_oc_exclude = 0;
1197                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1198                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1199                         rs->sr_text = dummy
1200                                 ? dummy
1201                                 : "postread control: unknown attributeType";
1202                         return rc;
1203                 }
1204         }
1205
1206         op->o_postread = ctrl->ldctl_iscritical
1207                 ? SLAP_CONTROL_CRITICAL
1208                 : SLAP_CONTROL_NONCRITICAL;
1209
1210         op->o_postread_attrs = an;
1211
1212         rs->sr_err = LDAP_SUCCESS;
1213         return LDAP_SUCCESS;
1214 }
1215
1216 static int parseValuesReturnFilter (
1217         Operation *op,
1218         SlapReply *rs,
1219         LDAPControl *ctrl )
1220 {
1221         BerElement      *ber;
1222         struct berval   fstr = BER_BVNULL;
1223
1224         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1225                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1226                 return LDAP_PROTOCOL_ERROR;
1227         }
1228
1229         if ( ctrl->ldctl_value.bv_len == 0 ) {
1230                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1231                 return LDAP_PROTOCOL_ERROR;
1232         }
1233
1234         ber = ber_init( &(ctrl->ldctl_value) );
1235         if (ber == NULL) {
1236                 rs->sr_text = "internal error";
1237                 return LDAP_OTHER;
1238         }
1239
1240         rs->sr_err = get_vrFilter( op, ber,
1241                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1242
1243         if( rs->sr_err != LDAP_SUCCESS ) {
1244                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1245                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1246                         send_ldap_disconnect( op, rs );
1247                         rs->sr_err = SLAPD_DISCONNECT;
1248                 } else {
1249                         send_ldap_result( op, rs );
1250                 }
1251                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1252         }
1253 #ifdef LDAP_DEBUG
1254         else {
1255                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1256         }
1257
1258         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1259                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1260         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1261 #endif
1262
1263         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1264                 ? SLAP_CONTROL_CRITICAL
1265                 : SLAP_CONTROL_NONCRITICAL;
1266
1267         rs->sr_err = LDAP_SUCCESS;
1268         return LDAP_SUCCESS;
1269 }
1270
1271 static int parseSubentries (
1272         Operation *op,
1273         SlapReply *rs,
1274         LDAPControl *ctrl )
1275 {
1276         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1277                 rs->sr_text = "subentries control specified multiple times";
1278                 return LDAP_PROTOCOL_ERROR;
1279         }
1280
1281         /* FIXME: should use BER library */
1282         if( ( ctrl->ldctl_value.bv_len != 3 )
1283                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1284                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1285         {
1286                 rs->sr_text = "subentries control value encoding is bogus";
1287                 return LDAP_PROTOCOL_ERROR;
1288         }
1289
1290         op->o_subentries = ctrl->ldctl_iscritical
1291                 ? SLAP_CONTROL_CRITICAL
1292                 : SLAP_CONTROL_NONCRITICAL;
1293
1294         if (ctrl->ldctl_value.bv_val[2]) {
1295                 set_subentries_visibility( op );
1296         }
1297
1298         return LDAP_SUCCESS;
1299 }
1300
1301 static int parsePermissiveModify (
1302         Operation *op,
1303         SlapReply *rs,
1304         LDAPControl *ctrl )
1305 {
1306         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1307                 rs->sr_text = "permissiveModify control specified multiple times";
1308                 return LDAP_PROTOCOL_ERROR;
1309         }
1310
1311         if ( ctrl->ldctl_value.bv_len ) {
1312                 rs->sr_text = "permissiveModify control value not empty";
1313                 return LDAP_PROTOCOL_ERROR;
1314         }
1315
1316         op->o_permissive_modify = ctrl->ldctl_iscritical
1317                 ? SLAP_CONTROL_CRITICAL
1318                 : SLAP_CONTROL_NONCRITICAL;
1319
1320         return LDAP_SUCCESS;
1321 }
1322
1323 static int parseDomainScope (
1324         Operation *op,
1325         SlapReply *rs,
1326         LDAPControl *ctrl )
1327 {
1328         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1329                 rs->sr_text = "domainScope control specified multiple times";
1330                 return LDAP_PROTOCOL_ERROR;
1331         }
1332
1333         if ( ctrl->ldctl_value.bv_len ) {
1334                 rs->sr_text = "domainScope control value not empty";
1335                 return LDAP_PROTOCOL_ERROR;
1336         }
1337
1338         op->o_domain_scope = ctrl->ldctl_iscritical
1339                 ? SLAP_CONTROL_CRITICAL
1340                 : SLAP_CONTROL_NONCRITICAL;
1341
1342         return LDAP_SUCCESS;
1343 }
1344
1345 #ifdef SLAP_CONTROL_X_TREE_DELETE
1346 static int parseTreeDelete (
1347         Operation *op,
1348         SlapReply *rs,
1349         LDAPControl *ctrl )
1350 {
1351         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1352                 rs->sr_text = "treeDelete control specified multiple times";
1353                 return LDAP_PROTOCOL_ERROR;
1354         }
1355
1356         if ( ctrl->ldctl_value.bv_len ) {
1357                 rs->sr_text = "treeDelete control value not empty";
1358                 return LDAP_PROTOCOL_ERROR;
1359         }
1360
1361         op->o_tree_delete = ctrl->ldctl_iscritical
1362                 ? SLAP_CONTROL_CRITICAL
1363                 : SLAP_CONTROL_NONCRITICAL;
1364
1365         return LDAP_SUCCESS;
1366 }
1367 #endif
1368
1369 static int parseSearchOptions (
1370         Operation *op,
1371         SlapReply *rs,
1372         LDAPControl *ctrl )
1373 {
1374         BerElement *ber;
1375         ber_int_t search_flags;
1376         ber_tag_t tag;
1377
1378         if ( ctrl->ldctl_value.bv_len == 0 ) {
1379                 rs->sr_text = "searchOptions control value is empty (or absent)";
1380                 return LDAP_PROTOCOL_ERROR;
1381         }
1382
1383         ber = ber_init( &ctrl->ldctl_value );
1384         if( ber == NULL ) {
1385                 rs->sr_text = "internal error";
1386                 return LDAP_OTHER;
1387         }
1388
1389         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1390                 rs->sr_text = "searchOptions control decoding error";
1391                 return LDAP_PROTOCOL_ERROR;
1392         }
1393
1394         (void) ber_free( ber, 1 );
1395
1396         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1397                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1398                         rs->sr_text = "searchOptions control specified multiple times "
1399                                 "or with domainScope control";
1400                         return LDAP_PROTOCOL_ERROR;
1401                 }
1402
1403                 op->o_domain_scope = ctrl->ldctl_iscritical
1404                         ? SLAP_CONTROL_CRITICAL
1405                         : SLAP_CONTROL_NONCRITICAL;
1406         }
1407
1408         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1409                 /* Other search flags not recognised so far,
1410                  * including:
1411                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1412                  */
1413                 rs->sr_text = "searchOptions contained unrecognized flag";
1414                 return LDAP_UNWILLING_TO_PERFORM;
1415         }
1416
1417         return LDAP_SUCCESS;
1418 }
1419