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