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 #ifdef LDAP_DEVEL
  32 static SLAP_CTRL_PARSE_FN parseManageDIT;
  33 #endif
  34 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  35 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
  36 static SLAP_CTRL_PARSE_FN parseModifyIncrement;
  37 #endif
  38 static SLAP_CTRL_PARSE_FN parseNoOp;
  39 static SLAP_CTRL_PARSE_FN parsePagedResults;
  40 #ifdef LDAP_DEVEL
  41 static SLAP_CTRL_PARSE_FN parseSortedResults;
  42 #endif
  43 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  44 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  45 static SLAP_CTRL_PARSE_FN parseDomainScope;
  46 #ifdef SLAP_CONTROL_X_TREE_DELETE
  47 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  48 #endif
  49 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  50 static SLAP_CTRL_PARSE_FN parseSubentries;
  51
  52 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  53
  54 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  55 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  56
  57 struct slap_control_ids slap_cids;
  58
  59 struct slap_control {
  60         /* Control OID */
  61         char *sc_oid;
  62
  63         /* The controlID for this control */
  64         int sc_cid;
  65
  66         /* Operations supported by control */
  67         slap_mask_t sc_mask;
  68
  69         /* Extended operations supported by control */
  70         char **sc_extendedops;
  71
  72         /* Control parsing callback */
  73         SLAP_CTRL_PARSE_FN *sc_parse;
  74
  75         LDAP_SLIST_ENTRY(slap_control) sc_next;
  76 };
  77
  78 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  79         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  80
  81 /*
  82  * all known request control OIDs should be added to this list
  83  */
  84 /*
  85  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  86  * addresses an undefined control; this allows to safely test for
  87  * well known controls even if they are not registered, e.g. if
  88  * they get moved to modules.  An example is sc_LDAPsync, which
  89  * is implemented in the syncprov overlay and thus, if configured
  90  * as dynamic module, may not be registered.  One side effect is that
  91  * slap_known_controls[0] == NULL, so it should always be used
  92  * starting from 1.
  93  * FIXME: should we define the "undefined control" oid?
  94  */
  95 char *slap_known_controls[SLAP_MAX_CIDS+1];
  96 static int num_known_controls = 1;
  97
  98 static char *proxy_authz_extops[] = {
  99         LDAP_EXOP_MODIFY_PASSWD,
 100         LDAP_EXOP_X_WHO_AM_I,
 101         NULL
 102 };
 103
 104 static struct slap_control control_defs[] = {
 105         {  LDAP_CONTROL_ASSERT,
 106                 (int)offsetof(struct slap_control_ids, sc_assert),
 107                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 108                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 109         { LDAP_CONTROL_PRE_READ,
 110                 (int)offsetof(struct slap_control_ids, sc_preRead),
 111                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 112                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 113         { LDAP_CONTROL_POST_READ,
 114                 (int)offsetof(struct slap_control_ids, sc_postRead),
 115                 SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 116                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 117         { LDAP_CONTROL_VALUESRETURNFILTER,
 118                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 119                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 120                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 121         { LDAP_CONTROL_PAGEDRESULTS,
 122                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 123                 SLAP_CTRL_SEARCH, NULL,
 124                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 125 #ifdef LDAP_DEVEL
 126         { LDAP_CONTROL_SORTREQUEST,
 127                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 128                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 129                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 130 #endif
 131 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 132         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 133                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 134                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 135                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 136 #endif
 137 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 138         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 139                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 140                 SLAP_CTRL_MODIFY, NULL,
 141                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 142 #endif
 143 #ifdef SLAP_CONTROL_X_TREE_DELETE
 144         { LDAP_CONTROL_X_TREE_DELETE,
 145                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 146                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE, NULL,
 147                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 148 #endif
 149 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
 150         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 151                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 152                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 153                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 154 #endif
 155 #ifdef LDAP_CONTROL_SUBENTRIES
 156         { LDAP_CONTROL_SUBENTRIES,
 157                 (int)offsetof(struct slap_control_ids, sc_subentries),
 158                 SLAP_CTRL_SEARCH, NULL,
 159                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 160 #endif
 161         { LDAP_CONTROL_NOOP,
 162                 (int)offsetof(struct slap_control_ids, sc_noOp),
 163                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 164                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 165 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 166         { LDAP_CONTROL_MODIFY_INCREMENT,
 167                 (int)offsetof(struct slap_control_ids, sc_modifyIncrement),
 168                 SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
 169                 parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 170 #endif
 171 #ifdef LDAP_DEVEL
 172         { LDAP_CONTROL_MANAGEDIT,
 173                 (int)offsetof(struct slap_control_ids, sc_manageDIT),
 174                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE, NULL,
 175                 parseManageDIT, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 176 #endif
 177         { LDAP_CONTROL_MANAGEDSAIT,
 178                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 179                 SLAP_CTRL_ACCESS, NULL,
 180                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 181         { LDAP_CONTROL_PROXY_AUTHZ,
 182                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 183                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
 184                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 185         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 186 };
 187
 188 /*
 189  * Register a supported control.
 190  *
 191  * This can be called by an OpenLDAP plugin or, indirectly, by a
 192  * SLAPI plugin calling slapi_register_supported_control().
 193  */
 194 int
 195 register_supported_control(const char *controloid,
 196         slap_mask_t controlmask,
 197         char **controlexops,
 198         SLAP_CTRL_PARSE_FN *controlparsefn,
 199         int *controlcid)
 200 {
 201         struct slap_control *sc;
 202         int i;
 203
 204         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 205                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 206                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 207                 SLAP_MAX_CIDS, 0, 0 );
 208                 return LDAP_OTHER;
 209         }
 210
 211         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 212
 213         /* sanity check - should never happen */
 214         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 215                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 216                         Debug( LDAP_DEBUG_ANY,
 217                                 "Control %s already registered.\n",
 218                                 controloid, 0, 0 );
 219                         return LDAP_PARAM_ERROR;
 220                 }
 221         }
 222
 223         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 224         if ( sc == NULL ) return LDAP_NO_MEMORY;
 225
 226         sc->sc_oid = ch_strdup( controloid );
 227         sc->sc_mask = controlmask;
 228         if ( controlexops != NULL ) {
 229                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 230                 if ( sc->sc_extendedops == NULL ) {
 231                         ch_free( sc );
 232                         return LDAP_NO_MEMORY;
 233                 }
 234         } else {
 235                 sc->sc_extendedops = NULL;
 236         }
 237         sc->sc_parse = controlparsefn;
 238
 239         if ( controlcid ) *controlcid = num_known_controls;
 240         sc->sc_cid = num_known_controls;
 241
 242         /* Update slap_known_controls, too. */
 243         slap_known_controls[num_known_controls-1] = sc->sc_oid;
 244         slap_known_controls[num_known_controls++] = NULL;
 245
 246         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 247         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 248         return LDAP_SUCCESS;
 249 }
 250
 251 /*
 252  * One-time initialization of internal controls.
 253  */
 254 int
 255 slap_controls_init( void )
 256 {
 257         int i, rc;
 258
 259         rc = LDAP_SUCCESS;
 260
 261         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 262                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 263                 rc = register_supported_control( control_defs[i].sc_oid,
 264                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 265                         control_defs[i].sc_parse, cid );
 266                 if ( rc != LDAP_SUCCESS ) break;
 267         }
 268
 269         return rc;
 270 }
 271
 272 /*
 273  * Free memory associated with list of supported controls.
 274  */
 275 void
 276 controls_destroy( void )
 277 {
 278         struct slap_control *sc;
 279
 280         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 281                 sc = LDAP_SLIST_FIRST(&controls_list);
 282                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 283
 284                 ch_free( sc->sc_oid );
 285                 if ( sc->sc_extendedops != NULL ) {
 286                         ldap_charray_free( sc->sc_extendedops );
 287                 }
 288                 ch_free( sc );
 289         }
 290 }
 291
 292 /*
 293  * Format the supportedControl attribute of the root DSE,
 294  * detailing which controls are supported by the directory
 295  * server.
 296  */
 297 int
 298 controls_root_dse_info( Entry *e )
 299 {
 300         AttributeDescription *ad_supportedControl
 301                 = slap_schema.si_ad_supportedControl;
 302         struct berval vals[2];
 303         struct slap_control *sc;
 304
 305         vals[1].bv_val = NULL;
 306         vals[1].bv_len = 0;
 307
 308         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 309                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 310
 311                 vals[0].bv_val = sc->sc_oid;
 312                 vals[0].bv_len = strlen( sc->sc_oid );
 313
 314                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 315                         return -1;
 316                 }
 317         }
 318
 319         return 0;
 320 }
 321
 322 /*
 323  * Return a list of OIDs and operation masks for supported
 324  * controls. Used by SLAPI.
 325  */
 326 int
 327 get_supported_controls(char ***ctrloidsp,
 328         slap_mask_t **ctrlmasks)
 329 {
 330         int n;
 331         char **oids;
 332         slap_mask_t *masks;
 333         struct slap_control *sc;
 334
 335         n = 0;
 336
 337         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 338                 n++;
 339         }
 340
 341         if ( n == 0 ) {
 342                 *ctrloidsp = NULL;
 343                 *ctrlmasks = NULL;
 344                 return LDAP_SUCCESS;
 345         }
 346
 347         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 348         if ( oids == NULL ) {
 349                 return LDAP_NO_MEMORY;
 350         }
 351         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 352         if  ( masks == NULL ) {
 353                 ch_free( oids );
 354                 return LDAP_NO_MEMORY;
 355         }
 356
 357         n = 0;
 358
 359         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 360                 oids[n] = ch_strdup( sc->sc_oid );
 361                 masks[n] = sc->sc_mask;
 362                 n++;
 363         }
 364         oids[n] = NULL;
 365         masks[n] = 0;
 366
 367         *ctrloidsp = oids;
 368         *ctrlmasks = masks;
 369
 370         return LDAP_SUCCESS;
 371 }
 372
 373 /*
 374  * Find a control given its OID.
 375  */
 376 static struct slap_control *
 377 find_ctrl( const char *oid )
 378 {
 379         struct slap_control *sc;
 380
 381         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 382                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 383                         return sc;
 384                 }
 385         }
 386
 387         return NULL;
 388 }
 389
 390 int
 391 slap_find_control_id(
 392         const char *oid,
 393         int *cid )
 394 {
 395         struct slap_control *ctrl = find_ctrl( oid );
 396         if ( ctrl ) {
 397                 if ( cid ) *cid = ctrl->sc_cid;
 398                 return LDAP_SUCCESS;
 399         }
 400         return LDAP_CONTROL_NOT_FOUND;
 401 }
 402
 403 int
 404 slap_global_control( Operation *op, const char *oid, int *cid )
 405 {
 406         struct slap_control *ctrl = find_ctrl( oid );
 407
 408         if ( ctrl == NULL ) {
 409                 /* should not be reachable */
 410                 Debug( LDAP_DEBUG_ANY,
 411                         "slap_global_control: unrecognized control: %s\n",
 412                         oid, 0, 0 );
 413                 return LDAP_CONTROL_NOT_FOUND;
 414         }
 415
 416         if ( cid ) *cid = ctrl->sc_cid;
 417
 418         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 419                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 420                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 421         {
 422                 return LDAP_COMPARE_TRUE;
 423         }
 424
 425         Debug( LDAP_DEBUG_TRACE,
 426                 "slap_global_control: unavailable control: %s\n",
 427                 oid, 0, 0 );
 428
 429         return LDAP_COMPARE_FALSE;
 430 }
 431
 432 void slap_free_ctrls(
 433         Operation *op,
 434         LDAPControl **ctrls )
 435 {
 436         int i;
 437
 438         for (i=0; ctrls[i]; i++) {
 439                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 440         }
 441         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 442 }
 443
 444 int slap_parse_ctrl(
 445         Operation *op,
 446         SlapReply *rs,
 447         LDAPControl *control,
 448         const char **text )
 449 {
 450         struct slap_control *sc;
 451
 452         sc = find_ctrl( control->ldctl_oid );
 453         if( sc != NULL ) {
 454                 /* recognized control */
 455                 slap_mask_t tagmask;
 456                 switch( op->o_tag ) {
 457                 case LDAP_REQ_ADD:
 458                         tagmask = SLAP_CTRL_ADD;
 459                         break;
 460                 case LDAP_REQ_BIND:
 461                         tagmask = SLAP_CTRL_BIND;
 462                         break;
 463                 case LDAP_REQ_COMPARE:
 464                         tagmask = SLAP_CTRL_COMPARE;
 465                         break;
 466                 case LDAP_REQ_DELETE:
 467                         tagmask = SLAP_CTRL_DELETE;
 468                         break;
 469                 case LDAP_REQ_MODIFY:
 470                         tagmask = SLAP_CTRL_MODIFY;
 471                         break;
 472                 case LDAP_REQ_RENAME:
 473                         tagmask = SLAP_CTRL_RENAME;
 474                         break;
 475                 case LDAP_REQ_SEARCH:
 476                         tagmask = SLAP_CTRL_SEARCH;
 477                         break;
 478                 case LDAP_REQ_UNBIND:
 479                         tagmask = SLAP_CTRL_UNBIND;
 480                         break;
 481                 case LDAP_REQ_ABANDON:
 482                         tagmask = SLAP_CTRL_ABANDON;
 483                         break;
 484                 case LDAP_REQ_EXTENDED:
 485                         tagmask=~0L;
 486                         assert( op->ore_reqoid.bv_val != NULL );
 487                         if( sc->sc_extendedops != NULL ) {
 488                                 int i;
 489                                 for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 490                                         if( strcmp( op->ore_reqoid.bv_val,
 491                                                 sc->sc_extendedops[i] ) == 0 )
 492                                         {
 493                                                 tagmask=0L;
 494                                                 break;
 495                                         }
 496                                 }
 497                         }
 498                         break;
 499                 default:
 500                         *text = "controls internal error";
 501                         return LDAP_OTHER;
 502                 }
 503
 504                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 505                         /* available extension */
 506                         int     rc;
 507
 508                         if( !sc->sc_parse ) {
 509                                 *text = "not yet implemented";
 510                                 return LDAP_OTHER;
 511                         }
 512
 513                         rc = sc->sc_parse( op, rs, control );
 514                         if ( rc ) {
 515                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 516                                 return rc;
 517                         }
 518
 519                 } else if( control->ldctl_iscritical ) {
 520                         /* unavailable CRITICAL control */
 521                         *text = "critical extension is unavailable";
 522                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 523                 }
 524         } else if( control->ldctl_iscritical ) {
 525                 /* unrecognized CRITICAL control */
 526                 *text = "critical extension is not recognized";
 527                 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 528         }
 529
 530         return LDAP_SUCCESS;
 531 }
 532
 533 int get_ctrls(
 534         Operation *op,
 535         SlapReply *rs,
 536         int sendres )
 537 {
 538         int nctrls = 0;
 539         ber_tag_t tag;
 540         ber_len_t len;
 541         char *opaque;
 542         BerElement *ber = op->o_ber;
 543         struct berval bv;
 544
 545         len = ber_pvt_ber_remaining(ber);
 546
 547         if( len == 0) {
 548                 /* no controls */
 549                 rs->sr_err = LDAP_SUCCESS;
 550                 return rs->sr_err;
 551         }
 552
 553         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 554                 if( tag == LBER_ERROR ) {
 555                         rs->sr_err = SLAPD_DISCONNECT;
 556                         rs->sr_text = "unexpected data in PDU";
 557                 }
 558
 559                 goto return_results;
 560         }
 561
 562         Debug( LDAP_DEBUG_TRACE,
 563                 "=> get_ctrls\n", 0, 0, 0 );
 564
 565         if( op->o_protocol < LDAP_VERSION3 ) {
 566                 rs->sr_err = SLAPD_DISCONNECT;
 567                 rs->sr_text = "controls require LDAPv3";
 568                 goto return_results;
 569         }
 570
 571         /* one for first control, one for termination */
 572         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 573
 574 #if 0
 575         if( op->ctrls == NULL ) {
 576                 rs->sr_err = LDAP_NO_MEMORY;
 577                 rs->sr_text = "no memory";
 578                 goto return_results;
 579         }
 580 #endif
 581
 582         op->o_ctrls[nctrls] = NULL;
 583
 584         /* step through each element */
 585         for( tag = ber_first_element( ber, &len, &opaque );
 586                 tag != LBER_ERROR;
 587                 tag = ber_next_element( ber, &len, opaque ) )
 588         {
 589                 LDAPControl *c;
 590                 LDAPControl **tctrls;
 591
 592                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 593                 memset(c, 0, sizeof(LDAPControl));
 594
 595                 /* allocate pointer space for current controls (nctrls)
 596                  * + this control + extra NULL
 597                  */
 598                 tctrls = op->o_tmprealloc( op->o_ctrls,
 599                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 600
 601 #if 0
 602                 if( tctrls == NULL ) {
 603                         ch_free( c );
 604                         ldap_controls_free(op->o_ctrls);
 605                         op->o_ctrls = NULL;
 606
 607                         rs->sr_err = LDAP_NO_MEMORY;
 608                         rs->sr_text = "no memory";
 609                         goto return_results;
 610                 }
 611 #endif
 612                 op->o_ctrls = tctrls;
 613
 614                 op->o_ctrls[nctrls++] = c;
 615                 op->o_ctrls[nctrls] = NULL;
 616
 617                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 618                 c->ldctl_oid = bv.bv_val;
 619
 620                 if( tag == LBER_ERROR ) {
 621                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 622                                 0, 0, 0 );
 623
 624                         slap_free_ctrls( op, op->o_ctrls );
 625                         op->o_ctrls = NULL;
 626                         rs->sr_err = SLAPD_DISCONNECT;
 627                         rs->sr_text = "decoding controls error";
 628                         goto return_results;
 629
 630                 } else if( c->ldctl_oid == NULL ) {
 631                         Debug( LDAP_DEBUG_TRACE,
 632                                 "get_ctrls: conn %lu got emtpy OID.\n",
 633                                 op->o_connid, 0, 0 );
 634
 635                         slap_free_ctrls( op, op->o_ctrls );
 636                         op->o_ctrls = NULL;
 637                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 638                         rs->sr_text = "OID field is empty";
 639                         goto return_results;
 640                 }
 641
 642                 tag = ber_peek_tag( ber, &len );
 643
 644                 if( tag == LBER_BOOLEAN ) {
 645                         ber_int_t crit;
 646                         tag = ber_scanf( ber, "b", &crit );
 647
 648                         if( tag == LBER_ERROR ) {
 649                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 650                                         0, 0, 0 );
 651                                 slap_free_ctrls( op, op->o_ctrls );
 652                                 op->o_ctrls = NULL;
 653                                 rs->sr_err = SLAPD_DISCONNECT;
 654                                 rs->sr_text = "decoding controls error";
 655                                 goto return_results;
 656                         }
 657
 658                         c->ldctl_iscritical = (crit != 0);
 659                         tag = ber_peek_tag( ber, &len );
 660                 }
 661
 662                 if( tag == LBER_OCTETSTRING ) {
 663                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 664
 665                         if( tag == LBER_ERROR ) {
 666                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 667                                         "%s (%scritical): get value failed.\n",
 668                                         op->o_connid, c->ldctl_oid,
 669                                         c->ldctl_iscritical ? "" : "non" );
 670                                 slap_free_ctrls( op, op->o_ctrls );
 671                                 op->o_ctrls = NULL;
 672                                 rs->sr_err = SLAPD_DISCONNECT;
 673                                 rs->sr_text = "decoding controls error";
 674                                 goto return_results;
 675                         }
 676                 }
 677
 678                 Debug( LDAP_DEBUG_TRACE,
 679                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 680                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 681
 682                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 683                 if ( rs->sr_err != LDAP_SUCCESS ) {
 684                         goto return_results;
 685                 }
 686         }
 687
 688 return_results:
 689         Debug( LDAP_DEBUG_TRACE,
 690                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 691                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 692
 693         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 694                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 695                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 696                         send_ldap_disconnect( op, rs );
 697                         rs->sr_err = SLAPD_DISCONNECT;
 698                 } else {
 699                         send_ldap_result( op, rs );
 700                 }
 701         }
 702
 703         return rs->sr_err;
 704 }
 705
 706 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 707 static int parseModifyIncrement (
 708         Operation *op,
 709         SlapReply *rs,
 710         LDAPControl *ctrl )
 711 {
 712 #if 0
 713         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 714                 rs->sr_text = "modifyIncrement control specified multiple times";
 715                 return LDAP_PROTOCOL_ERROR;
 716         }
 717 #endif
 718
 719         if ( ctrl->ldctl_value.bv_len ) {
 720                 rs->sr_text = "modifyIncrement control value not empty";
 721                 return LDAP_PROTOCOL_ERROR;
 722         }
 723
 724 #if 0
 725         op->o_modifyIncrement = ctrl->ldctl_iscritical
 726                 ? SLAP_CONTROL_CRITICAL
 727                 : SLAP_CONTROL_NONCRITICAL;
 728 #endif
 729
 730         return LDAP_SUCCESS;
 731 }
 732 #endif
 733
 734 #ifdef LDAP_DEVEL
 735 static int parseManageDIT (
 736         Operation *op,
 737         SlapReply *rs,
 738         LDAPControl *ctrl )
 739 {
 740         if ( op->o_managedit != SLAP_CONTROL_NONE ) {
 741                 rs->sr_text = "manageDIT control specified multiple times";
 742                 return LDAP_PROTOCOL_ERROR;
 743         }
 744
 745         if ( ctrl->ldctl_value.bv_len ) {
 746                 rs->sr_text = "manageDIT control value not empty";
 747                 return LDAP_PROTOCOL_ERROR;
 748         }
 749
 750         op->o_managedit = ctrl->ldctl_iscritical
 751                 ? SLAP_CONTROL_CRITICAL
 752                 : SLAP_CONTROL_NONCRITICAL;
 753
 754         return LDAP_SUCCESS;
 755 }
 756 #endif
 757
 758 static int parseManageDSAit (
 759         Operation *op,
 760         SlapReply *rs,
 761         LDAPControl *ctrl )
 762 {
 763         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 764                 rs->sr_text = "manageDSAit control specified multiple times";
 765                 return LDAP_PROTOCOL_ERROR;
 766         }
 767
 768         if ( ctrl->ldctl_value.bv_len ) {
 769                 rs->sr_text = "manageDSAit control value not empty";
 770                 return LDAP_PROTOCOL_ERROR;
 771         }
 772
 773         op->o_managedsait = ctrl->ldctl_iscritical
 774                 ? SLAP_CONTROL_CRITICAL
 775                 : SLAP_CONTROL_NONCRITICAL;
 776
 777         return LDAP_SUCCESS;
 778 }
 779
 780 static int parseProxyAuthz (
 781         Operation *op,
 782         SlapReply *rs,
 783         LDAPControl *ctrl )
 784 {
 785         int             rc;
 786         struct berval   dn = BER_BVNULL;
 787
 788         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 789                 rs->sr_text = "proxy authorization control specified multiple times";
 790                 return LDAP_PROTOCOL_ERROR;
 791         }
 792
 793         op->o_proxy_authz = ctrl->ldctl_iscritical
 794                 ? SLAP_CONTROL_CRITICAL
 795                 : SLAP_CONTROL_NONCRITICAL;
 796
 797         Debug( LDAP_DEBUG_ARGS,
 798                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 799                 op->o_connid,
 800                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 801                 0 );
 802
 803         if ( ctrl->ldctl_value.bv_len == 0 ) {
 804                 Debug( LDAP_DEBUG_TRACE,
 805                         "parseProxyAuthz: conn=%lu anonymous\n",
 806                         op->o_connid, 0, 0 );
 807
 808                 /* anonymous */
 809                 op->o_ndn.bv_val[ 0 ] = '\0';
 810                 op->o_ndn.bv_len = 0;
 811
 812                 op->o_dn.bv_val[ 0 ] = '\0';
 813                 op->o_dn.bv_len = 0;
 814
 815                 return LDAP_SUCCESS;
 816         }
 817
 818         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 819                         NULL, &dn, SLAP_GETDN_AUTHZID );
 820
 821         /* FIXME: empty DN in proxyAuthz control should be legal... */
 822         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 823                 if ( dn.bv_val ) {
 824                         ch_free( dn.bv_val );
 825                 }
 826                 rs->sr_text = "authzId mapping failed";
 827                 return LDAP_PROXY_AUTHZ_FAILURE;
 828         }
 829
 830         Debug( LDAP_DEBUG_TRACE,
 831                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 832                 op->o_connid,
 833                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 834
 835         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 836
 837         if ( rc ) {
 838                 ch_free( dn.bv_val );
 839                 rs->sr_text = "not authorized to assume identity";
 840                 return LDAP_PROXY_AUTHZ_FAILURE;
 841         }
 842
 843         ch_free( op->o_ndn.bv_val );
 844         ch_free( op->o_dn.bv_val );
 845
 846         /*
 847          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 848          * from now on op->o_dn is normalized
 849          */
 850         op->o_ndn = dn;
 851         ber_dupbv( &op->o_dn, &dn );
 852
 853
 854         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 855             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 856
 857         return LDAP_SUCCESS;
 858 }
 859
 860 static int parseNoOp (
 861         Operation *op,
 862         SlapReply *rs,
 863         LDAPControl *ctrl )
 864 {
 865         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 866                 rs->sr_text = "noop control specified multiple times";
 867                 return LDAP_PROTOCOL_ERROR;
 868         }
 869
 870         if ( ctrl->ldctl_value.bv_len ) {
 871                 rs->sr_text = "noop control value not empty";
 872                 return LDAP_PROTOCOL_ERROR;
 873         }
 874
 875         op->o_noop = ctrl->ldctl_iscritical
 876                 ? SLAP_CONTROL_CRITICAL
 877                 : SLAP_CONTROL_NONCRITICAL;
 878
 879         return LDAP_SUCCESS;
 880 }
 881
 882 static int parsePagedResults (
 883         Operation *op,
 884         SlapReply *rs,
 885         LDAPControl *ctrl )
 886 {
 887         int             rc = LDAP_SUCCESS;
 888         ber_tag_t       tag;
 889         ber_int_t       size;
 890         BerElement      *ber;
 891         struct berval   cookie = BER_BVNULL;
 892         PagedResultsState       *ps;
 893
 894         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 895                 rs->sr_text = "paged results control specified multiple times";
 896                 return LDAP_PROTOCOL_ERROR;
 897         }
 898
 899         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 900                 rs->sr_text = "paged results control value is empty (or absent)";
 901                 return LDAP_PROTOCOL_ERROR;
 902         }
 903
 904         /* Parse the control value
 905          *      realSearchControlValue ::= SEQUENCE {
 906          *              size    INTEGER (0..maxInt),
 907          *                              -- requested page size from client
 908          *                              -- result set size estimate from server
 909          *              cookie  OCTET STRING
 910          * }
 911          */
 912         ber = ber_init( &ctrl->ldctl_value );
 913         if ( ber == NULL ) {
 914                 rs->sr_text = "internal error";
 915                 return LDAP_OTHER;
 916         }
 917
 918         tag = ber_scanf( ber, "{im}", &size, &cookie );
 919
 920         if ( tag == LBER_ERROR ) {
 921                 rs->sr_text = "paged results control could not be decoded";
 922                 rc = LDAP_PROTOCOL_ERROR;
 923                 goto done;
 924         }
 925
 926         if ( size < 0 ) {
 927                 rs->sr_text = "paged results control size invalid";
 928                 rc = LDAP_PROTOCOL_ERROR;
 929                 goto done;
 930         }
 931
 932 #if 0
 933         /* defer cookie decoding/checks to backend... */
 934         if ( cookie.bv_len ) {
 935                 PagedResultsCookie reqcookie;
 936                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 937                         /* bad cookie */
 938                         rs->sr_text = "paged results cookie is invalid";
 939                         rc = LDAP_PROTOCOL_ERROR;
 940                         goto done;
 941                 }
 942
 943                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 944
 945                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 946                         /* bad cookie */
 947                         rs->sr_text = "paged results cookie is invalid";
 948                         rc = LDAP_PROTOCOL_ERROR;
 949                         goto done;
 950
 951                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 952                         rs->sr_text = "paged results cookie is invalid or old";
 953                         rc = LDAP_UNWILLING_TO_PERFORM;
 954                         goto done;
 955                 }
 956
 957         } else {
 958                 /* Initial request.  Initialize state. */
 959 #if 0
 960                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 961                         /* There's another pagedResults control on the
 962                          * same connection; reject new pagedResults controls
 963                          * (allowed by RFC2696) */
 964                         rs->sr_text = "paged results cookie unavailable; try later";
 965                         rc = LDAP_UNWILLING_TO_PERFORM;
 966                         goto done;
 967                 }
 968 #endif
 969                 op->o_pagedresults_state.ps_cookie = 0;
 970                 op->o_pagedresults_state.ps_count = 0;
 971         }
 972 #endif
 973
 974         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 975         *ps = op->o_conn->c_pagedresults_state;
 976         ps->ps_size = size;
 977         op->o_pagedresults_state = ps;
 978
 979         /* NOTE: according to RFC 2696 3.:
 980
 981     If the page size is greater than or equal to the sizeLimit value, the
 982     server should ignore the control as the request can be satisfied in a
 983     single page.
 984
 985          * NOTE: this assumes that the op->ors_slimit be set
 986          * before the controls are parsed.
 987          */
 988
 989         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 990                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 991
 992         } else if ( ctrl->ldctl_iscritical ) {
 993                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 994
 995         } else {
 996                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 997         }
 998
 999 done:;
1000         (void)ber_free( ber, 1 );
1001         return rc;
1002 }
1003
1004 #ifdef LDAP_DEVEL
1005 static int parseSortedResults (
1006         Operation *op,
1007         SlapReply *rs,
1008         LDAPControl *ctrl )
1009 {
1010         int             rc = LDAP_SUCCESS;
1011
1012         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1013                 rs->sr_text = "sorted results control specified multiple times";
1014                 return LDAP_PROTOCOL_ERROR;
1015         }
1016
1017         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1018                 rs->sr_text = "sorted results control value is empty (or absent)";
1019                 return LDAP_PROTOCOL_ERROR;
1020         }
1021
1022         /* blow off parsing the value */
1023
1024         op->o_sortedresults = ctrl->ldctl_iscritical
1025                 ? SLAP_CONTROL_CRITICAL
1026                 : SLAP_CONTROL_NONCRITICAL;
1027
1028         return rc;
1029 }
1030 #endif
1031
1032 static int parseAssert (
1033         Operation *op,
1034         SlapReply *rs,
1035         LDAPControl *ctrl )
1036 {
1037         BerElement      *ber;
1038         struct berval   fstr = BER_BVNULL;
1039
1040         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1041                 rs->sr_text = "assert control specified multiple times";
1042                 return LDAP_PROTOCOL_ERROR;
1043         }
1044
1045         if ( ctrl->ldctl_value.bv_len == 0 ) {
1046                 rs->sr_text = "assert control value is empty (or absent)";
1047                 return LDAP_PROTOCOL_ERROR;
1048         }
1049
1050         ber = ber_init( &(ctrl->ldctl_value) );
1051         if (ber == NULL) {
1052                 rs->sr_text = "assert control: internal error";
1053                 return LDAP_OTHER;
1054         }
1055
1056         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
1057
1058         if( rs->sr_err != LDAP_SUCCESS ) {
1059                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1060                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1061                         send_ldap_disconnect( op, rs );
1062                         rs->sr_err = SLAPD_DISCONNECT;
1063                 } else {
1064                         send_ldap_result( op, rs );
1065                 }
1066                 if( op->o_assertion != NULL ) {
1067                         filter_free_x( op, op->o_assertion );
1068                 }
1069                 return rs->sr_err;
1070         }
1071
1072 #ifdef LDAP_DEBUG
1073         filter2bv_x( op, op->o_assertion, &fstr );
1074
1075         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1076                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1077         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1078 #endif
1079
1080         op->o_assert = ctrl->ldctl_iscritical
1081                 ? SLAP_CONTROL_CRITICAL
1082                 : SLAP_CONTROL_NONCRITICAL;
1083
1084         rs->sr_err = LDAP_SUCCESS;
1085         return LDAP_SUCCESS;
1086 }
1087
1088 static int parsePreRead (
1089         Operation *op,
1090         SlapReply *rs,
1091         LDAPControl *ctrl )
1092 {
1093         ber_len_t siz, off, i;
1094         AttributeName *an = NULL;
1095         BerElement      *ber;
1096
1097         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1098                 rs->sr_text = "preread control specified multiple times";
1099                 return LDAP_PROTOCOL_ERROR;
1100         }
1101
1102         if ( ctrl->ldctl_value.bv_len == 0 ) {
1103                 rs->sr_text = "preread control value is empty (or absent)";
1104                 return LDAP_PROTOCOL_ERROR;
1105         }
1106
1107         ber = ber_init( &(ctrl->ldctl_value) );
1108         if (ber == NULL) {
1109                 rs->sr_text = "preread control: internal error";
1110                 return LDAP_OTHER;
1111         }
1112
1113         siz = sizeof( AttributeName );
1114         off = offsetof( AttributeName, an_name );
1115         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1116                 rs->sr_text = "preread control: decoding error";
1117                 return LDAP_PROTOCOL_ERROR;
1118         }
1119
1120         for( i=0; i<siz; i++ ) {
1121                 int             rc = LDAP_SUCCESS;
1122                 const char      *dummy = NULL;
1123
1124                 an[i].an_desc = NULL;
1125                 an[i].an_oc = NULL;
1126                 an[i].an_oc_exclude = 0;
1127                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1128                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1129                         rs->sr_text = dummy
1130                                 ? dummy
1131                                 : "postread control: unknown attributeType";
1132                         return rc;
1133                 }
1134         }
1135
1136         op->o_preread = ctrl->ldctl_iscritical
1137                 ? SLAP_CONTROL_CRITICAL
1138                 : SLAP_CONTROL_NONCRITICAL;
1139
1140         op->o_preread_attrs = an;
1141
1142         rs->sr_err = LDAP_SUCCESS;
1143         return LDAP_SUCCESS;
1144 }
1145
1146 static int parsePostRead (
1147         Operation *op,
1148         SlapReply *rs,
1149         LDAPControl *ctrl )
1150 {
1151         ber_len_t siz, off, i;
1152         AttributeName *an = NULL;
1153         BerElement      *ber;
1154
1155         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1156                 rs->sr_text = "postread control specified multiple times";
1157                 return LDAP_PROTOCOL_ERROR;
1158         }
1159
1160         if ( ctrl->ldctl_value.bv_len == 0 ) {
1161                 rs->sr_text = "postread control value is empty (or absent)";
1162                 return LDAP_PROTOCOL_ERROR;
1163         }
1164
1165         ber = ber_init( &(ctrl->ldctl_value) );
1166         if (ber == NULL) {
1167                 rs->sr_text = "postread control: internal error";
1168                 return LDAP_OTHER;
1169         }
1170
1171         siz = sizeof( AttributeName );
1172         off = offsetof( AttributeName, an_name );
1173         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1174                 rs->sr_text = "postread control: decoding error";
1175                 return LDAP_PROTOCOL_ERROR;
1176         }
1177
1178         for( i=0; i<siz; i++ ) {
1179                 int             rc = LDAP_SUCCESS;
1180                 const char      *dummy = NULL;
1181
1182                 an[i].an_desc = NULL;
1183                 an[i].an_oc = NULL;
1184                 an[i].an_oc_exclude = 0;
1185                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1186                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1187                         rs->sr_text = dummy
1188                                 ? dummy
1189                                 : "postread control: unknown attributeType";
1190                         return rc;
1191                 }
1192         }
1193
1194         op->o_postread = ctrl->ldctl_iscritical
1195                 ? SLAP_CONTROL_CRITICAL
1196                 : SLAP_CONTROL_NONCRITICAL;
1197
1198         op->o_postread_attrs = an;
1199
1200         rs->sr_err = LDAP_SUCCESS;
1201         return LDAP_SUCCESS;
1202 }
1203
1204 static int parseValuesReturnFilter (
1205         Operation *op,
1206         SlapReply *rs,
1207         LDAPControl *ctrl )
1208 {
1209         BerElement      *ber;
1210         struct berval   fstr = BER_BVNULL;
1211
1212         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1213                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1214                 return LDAP_PROTOCOL_ERROR;
1215         }
1216
1217         if ( ctrl->ldctl_value.bv_len == 0 ) {
1218                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1219                 return LDAP_PROTOCOL_ERROR;
1220         }
1221
1222         ber = ber_init( &(ctrl->ldctl_value) );
1223         if (ber == NULL) {
1224                 rs->sr_text = "internal error";
1225                 return LDAP_OTHER;
1226         }
1227
1228         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1229
1230         if( rs->sr_err != LDAP_SUCCESS ) {
1231                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1232                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1233                         send_ldap_disconnect( op, rs );
1234                         rs->sr_err = SLAPD_DISCONNECT;
1235                 } else {
1236                         send_ldap_result( op, rs );
1237                 }
1238                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1239         }
1240 #ifdef LDAP_DEBUG
1241         else {
1242                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1243         }
1244
1245         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1246                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1247         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1248 #endif
1249
1250         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1251                 ? SLAP_CONTROL_CRITICAL
1252                 : SLAP_CONTROL_NONCRITICAL;
1253
1254         rs->sr_err = LDAP_SUCCESS;
1255         return LDAP_SUCCESS;
1256 }
1257
1258 #ifdef LDAP_CONTROL_SUBENTRIES
1259 static int parseSubentries (
1260         Operation *op,
1261         SlapReply *rs,
1262         LDAPControl *ctrl )
1263 {
1264         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1265                 rs->sr_text = "subentries control specified multiple times";
1266                 return LDAP_PROTOCOL_ERROR;
1267         }
1268
1269         /* FIXME: should use BER library */
1270         if( ( ctrl->ldctl_value.bv_len != 3 )
1271                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1272                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1273         {
1274                 rs->sr_text = "subentries control value encoding is bogus";
1275                 return LDAP_PROTOCOL_ERROR;
1276         }
1277
1278         op->o_subentries = ctrl->ldctl_iscritical
1279                 ? SLAP_CONTROL_CRITICAL
1280                 : SLAP_CONTROL_NONCRITICAL;
1281
1282         if (ctrl->ldctl_value.bv_val[2]) {
1283                 set_subentries_visibility( op );
1284         }
1285
1286         return LDAP_SUCCESS;
1287 }
1288 #endif
1289
1290 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1291 static int parsePermissiveModify (
1292         Operation *op,
1293         SlapReply *rs,
1294         LDAPControl *ctrl )
1295 {
1296         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1297                 rs->sr_text = "permissiveModify control specified multiple times";
1298                 return LDAP_PROTOCOL_ERROR;
1299         }
1300
1301         if ( ctrl->ldctl_value.bv_len ) {
1302                 rs->sr_text = "permissiveModify control value not empty";
1303                 return LDAP_PROTOCOL_ERROR;
1304         }
1305
1306         op->o_permissive_modify = ctrl->ldctl_iscritical
1307                 ? SLAP_CONTROL_CRITICAL
1308                 : SLAP_CONTROL_NONCRITICAL;
1309
1310         return LDAP_SUCCESS;
1311 }
1312 #endif
1313
1314 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1315 static int parseDomainScope (
1316         Operation *op,
1317         SlapReply *rs,
1318         LDAPControl *ctrl )
1319 {
1320         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1321                 rs->sr_text = "domainScope control specified multiple times";
1322                 return LDAP_PROTOCOL_ERROR;
1323         }
1324
1325         if ( ctrl->ldctl_value.bv_len ) {
1326                 rs->sr_text = "domainScope control value not empty";
1327                 return LDAP_PROTOCOL_ERROR;
1328         }
1329
1330         op->o_domain_scope = ctrl->ldctl_iscritical
1331                 ? SLAP_CONTROL_CRITICAL
1332                 : SLAP_CONTROL_NONCRITICAL;
1333
1334         return LDAP_SUCCESS;
1335 }
1336 #endif
1337
1338 #ifdef SLAP_CONTROL_X_TREE_DELETE
1339 static int parseTreeDelete (
1340         Operation *op,
1341         SlapReply *rs,
1342         LDAPControl *ctrl )
1343 {
1344         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1345                 rs->sr_text = "treeDelete control specified multiple times";
1346                 return LDAP_PROTOCOL_ERROR;
1347         }
1348
1349         if ( ctrl->ldctl_value.bv_len ) {
1350                 rs->sr_text = "treeDelete control value not empty";
1351                 return LDAP_PROTOCOL_ERROR;
1352         }
1353
1354         op->o_tree_delete = ctrl->ldctl_iscritical
1355                 ? SLAP_CONTROL_CRITICAL
1356                 : SLAP_CONTROL_NONCRITICAL;
1357
1358         return LDAP_SUCCESS;
1359 }
1360 #endif
1361
1362 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
1363 static int parseSearchOptions (
1364         Operation *op,
1365         SlapReply *rs,
1366         LDAPControl *ctrl )
1367 {
1368         BerElement *ber;
1369         ber_int_t search_flags;
1370         ber_tag_t tag;
1371
1372         if ( ctrl->ldctl_value.bv_len == 0 ) {
1373                 rs->sr_text = "searchOptions control value not empty";
1374                 return LDAP_PROTOCOL_ERROR;
1375         }
1376
1377         ber = ber_init( &ctrl->ldctl_value );
1378         if( ber == NULL ) {
1379                 rs->sr_text = "internal error";
1380                 return LDAP_OTHER;
1381         }
1382
1383         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1384                 rs->sr_text = "searchOptions control decoding error";
1385                 return LDAP_PROTOCOL_ERROR;
1386         }
1387
1388         (void) ber_free( ber, 1 );
1389
1390         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1391                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1392                         rs->sr_text = "searchOptions control specified multiple times "
1393                                 "or with domainScope control";
1394                         return LDAP_PROTOCOL_ERROR;
1395                 }
1396
1397                 op->o_domain_scope = ctrl->ldctl_iscritical
1398                         ? SLAP_CONTROL_CRITICAL
1399                         : SLAP_CONTROL_NONCRITICAL;
1400         }
1401
1402         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1403                 /* Other search flags not recognised so far,
1404                  * including:
1405                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1406                  */
1407                 rs->sr_text = "searchOptions contained unrecongized flag";
1408                 return LDAP_UNWILLING_TO_PERFORM;
1409         }
1410
1411         return LDAP_SUCCESS;
1412 }
1413 #endif
1414