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 1998-2007 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 #include "lutil.h"
  25
  26 #include "../../libraries/liblber/lber-int.h"
  27
  28 static SLAP_CTRL_PARSE_FN parseAssert;
  29 static SLAP_CTRL_PARSE_FN parseDomainScope;
  30 static SLAP_CTRL_PARSE_FN parseDontUseCopy;
  31 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  32 static SLAP_CTRL_PARSE_FN parseNoOp;
  33 static SLAP_CTRL_PARSE_FN parsePagedResults;
  34 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  35 static SLAP_CTRL_PARSE_FN parsePreRead, parsePostRead;
  36 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  37 static SLAP_CTRL_PARSE_FN parseRelax;
  38 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  39 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
  40 static SLAP_CTRL_PARSE_FN parseSortedResults;
  41 #endif
  42 static SLAP_CTRL_PARSE_FN parseSubentries;
  43 #ifdef SLAP_CONTROL_X_TREE_DELETE
  44 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  45 #endif
  46 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  47 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  48 static SLAP_CTRL_PARSE_FN parseSessionTracking;
  49 #endif
  50
  51 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  52
  53 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  54 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  55
  56 struct slap_control_ids slap_cids;
  57
  58 struct slap_control {
  59         /* Control OID */
  60         char *sc_oid;
  61
  62         /* The controlID for this control */
  63         int sc_cid;
  64
  65         /* Operations supported by control */
  66         slap_mask_t sc_mask;
  67
  68         /* Extended operations supported by control */
  69         char **sc_extendedops;          /* input */
  70         BerVarray sc_extendedopsbv;     /* run-time use */
  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_WHO_AM_I,
 101         LDAP_EXOP_REFRESH,
 102         NULL
 103 };
 104
 105 static char *manageDSAit_extops[] = {
 106         LDAP_EXOP_REFRESH,
 107         NULL
 108 };
 109
 110 static struct slap_control control_defs[] = {
 111         {  LDAP_CONTROL_ASSERT,
 112                 (int)offsetof(struct slap_control_ids, sc_assert),
 113                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME|
 114                         SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH,
 115                 NULL, NULL,
 116                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 117         { LDAP_CONTROL_PRE_READ,
 118                 (int)offsetof(struct slap_control_ids, sc_preRead),
 119                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 120                 NULL, NULL,
 121                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 122         { LDAP_CONTROL_POST_READ,
 123                 (int)offsetof(struct slap_control_ids, sc_postRead),
 124                 SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 125                 NULL, NULL,
 126                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 127         { LDAP_CONTROL_VALUESRETURNFILTER,
 128                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 129                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH,
 130                 NULL, NULL,
 131                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 132         { LDAP_CONTROL_PAGEDRESULTS,
 133                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 134                 SLAP_CTRL_SEARCH,
 135                 NULL, NULL,
 136                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 137 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 138         { LDAP_CONTROL_SORTREQUEST,
 139                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 140                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 141                 NULL, NULL,
 142                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 143 #endif
 144         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 145                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 146                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 147                 NULL, NULL,
 148                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 149         { LDAP_CONTROL_DONTUSECOPY,
 150                 (int)offsetof(struct slap_control_ids, sc_dontUseCopy),
 151                 SLAP_CTRL_GLOBAL|SLAP_CTRL_INTROGATE|SLAP_CTRL_HIDE,
 152                 NULL, NULL,
 153                 parseDontUseCopy, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 154         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 155                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 156                 SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE,
 157                 NULL, NULL,
 158                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 159 #ifdef SLAP_CONTROL_X_TREE_DELETE
 160         { LDAP_CONTROL_X_TREE_DELETE,
 161                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 162                 SLAP_CTRL_DELETE|SLAP_CTRL_HIDE,
 163                 NULL, NULL,
 164                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 165 #endif
 166         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 167                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 168                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 169                 NULL, NULL,
 170                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 171         { LDAP_CONTROL_SUBENTRIES,
 172                 (int)offsetof(struct slap_control_ids, sc_subentries),
 173                 SLAP_CTRL_SEARCH,
 174                 NULL, NULL,
 175                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 176         { LDAP_CONTROL_NOOP,
 177                 (int)offsetof(struct slap_control_ids, sc_noOp),
 178                 SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE,
 179                 NULL, NULL,
 180                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 181         { LDAP_CONTROL_RELAX,
 182                 (int)offsetof(struct slap_control_ids, sc_relax),
 183                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 184                 NULL, NULL,
 185                 parseRelax, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 186 #ifdef LDAP_X_TXN
 187         { LDAP_CONTROL_X_TXN_SPEC,
 188                 (int)offsetof(struct slap_control_ids, sc_txnSpec),
 189                 SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 190                 NULL, NULL,
 191                 txn_spec_ctrl, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 192 #endif
 193         { LDAP_CONTROL_MANAGEDSAIT,
 194                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 195                 SLAP_CTRL_ACCESS,
 196                 manageDSAit_extops, NULL,
 197                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 198         { LDAP_CONTROL_PROXY_AUTHZ,
 199                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 200                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS,
 201                 proxy_authz_extops, NULL,
 202                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 203 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 204         { LDAP_CONTROL_X_SESSION_TRACKING,
 205                 (int)offsetof(struct slap_control_ids, sc_sessionTracking),
 206                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS|SLAP_CTRL_BIND|SLAP_CTRL_HIDE,
 207                 NULL, NULL,
 208                 parseSessionTracking, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 209 #endif
 210         { NULL, 0, 0, NULL, 0, NULL, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 211 };
 212
 213 static struct slap_control *
 214 find_ctrl( const char *oid );
 215
 216 /*
 217  * Register a supported control.
 218  *
 219  * This can be called by an OpenLDAP plugin or, indirectly, by a
 220  * SLAPI plugin calling slapi_register_supported_control().
 221  *
 222  * NOTE: if flags == 1 the control is replaced if already registered;
 223  * otherwise registering an already registered control is not allowed.
 224  */
 225 int
 226 register_supported_control2(const char *controloid,
 227         slap_mask_t controlmask,
 228         char **controlexops,
 229         SLAP_CTRL_PARSE_FN *controlparsefn,
 230         unsigned flags,
 231         int *controlcid)
 232 {
 233         struct slap_control *sc = NULL;
 234         int i;
 235         BerVarray extendedopsbv = NULL;
 236
 237         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 238                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 239                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 240                 SLAP_MAX_CIDS, 0, 0 );
 241                 return LDAP_OTHER;
 242         }
 243
 244         if ( controloid == NULL ) {
 245                 return LDAP_PARAM_ERROR;
 246         }
 247
 248         /* check if already registered */
 249         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 250                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 251                         if ( flags == 1 ) {
 252                                 Debug( LDAP_DEBUG_TRACE,
 253                                         "Control %s already registered; replacing.\n",
 254                                         controloid, 0, 0 );
 255                                 /* (find and) replace existing handler */
 256                                 sc = find_ctrl( controloid );
 257                                 assert( sc != NULL );
 258                                 break;
 259                         }
 260
 261                         Debug( LDAP_DEBUG_ANY,
 262                                 "Control %s already registered.\n",
 263                                 controloid, 0, 0 );
 264                         return LDAP_PARAM_ERROR;
 265                 }
 266         }
 267
 268         /* turn compatible extended operations into bervals */
 269         if ( controlexops != NULL ) {
 270                 int i;
 271
 272                 for ( i = 0; controlexops[ i ]; i++ );
 273
 274                 extendedopsbv = ber_memcalloc( i + 1, sizeof( struct berval ) );
 275                 if ( extendedopsbv == NULL ) {
 276                         return LDAP_NO_MEMORY;
 277                 }
 278
 279                 for ( i = 0; controlexops[ i ]; i++ ) {
 280                         ber_str2bv( controlexops[ i ], 0, 1, &extendedopsbv[ i ] );
 281                 }
 282         }
 283
 284         if ( sc == NULL ) {
 285                 sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 286                 if ( sc == NULL ) {
 287                         return LDAP_NO_MEMORY;
 288                 }
 289
 290                 sc->sc_oid = ch_strdup( controloid );
 291                 sc->sc_cid = num_known_controls;
 292
 293                 /* Update slap_known_controls, too. */
 294                 slap_known_controls[num_known_controls - 1] = sc->sc_oid;
 295                 slap_known_controls[num_known_controls++] = NULL;
 296
 297                 LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 298                 LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 299
 300         } else {
 301                 if ( sc->sc_extendedopsbv ) {
 302                         /* FIXME: in principle, we should rather merge
 303                          * existing extops with those supported by the
 304                          * new control handling implementation.
 305                          * In fact, whether a control is compatible with
 306                          * an extop should not be a matter of implementation.
 307                          * We likely also need a means for a newly
 308                          * registered extop to declare that it is
 309                          * comptible with an already registered control.
 310                          */
 311                         ber_bvarray_free( sc->sc_extendedopsbv );
 312                         sc->sc_extendedopsbv = NULL;
 313                         sc->sc_extendedops = NULL;
 314                 }
 315         }
 316
 317         sc->sc_extendedopsbv = extendedopsbv;
 318         sc->sc_mask = controlmask;
 319         sc->sc_parse = controlparsefn;
 320         if ( controlcid ) {
 321                 *controlcid = sc->sc_cid;
 322         }
 323
 324         return LDAP_SUCCESS;
 325 }
 326
 327 /*
 328  * One-time initialization of internal controls.
 329  */
 330 int
 331 slap_controls_init( void )
 332 {
 333         int i, rc;
 334
 335         rc = LDAP_SUCCESS;
 336
 337         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 338                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 339                 rc = register_supported_control( control_defs[i].sc_oid,
 340                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 341                         control_defs[i].sc_parse, cid );
 342                 if ( rc != LDAP_SUCCESS ) break;
 343         }
 344
 345         return rc;
 346 }
 347
 348 /*
 349  * Free memory associated with list of supported controls.
 350  */
 351 void
 352 controls_destroy( void )
 353 {
 354         struct slap_control *sc;
 355
 356         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 357                 sc = LDAP_SLIST_FIRST(&controls_list);
 358                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 359
 360                 ch_free( sc->sc_oid );
 361                 if ( sc->sc_extendedopsbv != NULL ) {
 362                         ber_bvarray_free( sc->sc_extendedopsbv );
 363                 }
 364                 ch_free( sc );
 365         }
 366 }
 367
 368 /*
 369  * Format the supportedControl attribute of the root DSE,
 370  * detailing which controls are supported by the directory
 371  * server.
 372  */
 373 int
 374 controls_root_dse_info( Entry *e )
 375 {
 376         AttributeDescription *ad_supportedControl
 377                 = slap_schema.si_ad_supportedControl;
 378         struct berval vals[2];
 379         struct slap_control *sc;
 380
 381         vals[1].bv_val = NULL;
 382         vals[1].bv_len = 0;
 383
 384         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 385                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 386
 387                 vals[0].bv_val = sc->sc_oid;
 388                 vals[0].bv_len = strlen( sc->sc_oid );
 389
 390                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 391                         return -1;
 392                 }
 393         }
 394
 395         return 0;
 396 }
 397
 398 /*
 399  * Return a list of OIDs and operation masks for supported
 400  * controls. Used by SLAPI.
 401  */
 402 int
 403 get_supported_controls(char ***ctrloidsp,
 404         slap_mask_t **ctrlmasks)
 405 {
 406         int n;
 407         char **oids;
 408         slap_mask_t *masks;
 409         struct slap_control *sc;
 410
 411         n = 0;
 412
 413         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 414                 n++;
 415         }
 416
 417         if ( n == 0 ) {
 418                 *ctrloidsp = NULL;
 419                 *ctrlmasks = NULL;
 420                 return LDAP_SUCCESS;
 421         }
 422
 423         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 424         if ( oids == NULL ) {
 425                 return LDAP_NO_MEMORY;
 426         }
 427         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 428         if  ( masks == NULL ) {
 429                 SLAP_FREE( oids );
 430                 return LDAP_NO_MEMORY;
 431         }
 432
 433         n = 0;
 434
 435         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 436                 oids[n] = ch_strdup( sc->sc_oid );
 437                 masks[n] = sc->sc_mask;
 438                 n++;
 439         }
 440         oids[n] = NULL;
 441         masks[n] = 0;
 442
 443         *ctrloidsp = oids;
 444         *ctrlmasks = masks;
 445
 446         return LDAP_SUCCESS;
 447 }
 448
 449 /*
 450  * Find a control given its OID.
 451  */
 452 static struct slap_control *
 453 find_ctrl( const char *oid )
 454 {
 455         struct slap_control *sc;
 456
 457         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 458                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 459                         return sc;
 460                 }
 461         }
 462
 463         return NULL;
 464 }
 465
 466 int
 467 slap_find_control_id(
 468         const char *oid,
 469         int *cid )
 470 {
 471         struct slap_control *ctrl = find_ctrl( oid );
 472         if ( ctrl ) {
 473                 if ( cid ) *cid = ctrl->sc_cid;
 474                 return LDAP_SUCCESS;
 475         }
 476         return LDAP_CONTROL_NOT_FOUND;
 477 }
 478
 479 int
 480 slap_global_control( Operation *op, const char *oid, int *cid )
 481 {
 482         struct slap_control *ctrl = find_ctrl( oid );
 483
 484         if ( ctrl == NULL ) {
 485                 /* should not be reachable */
 486                 Debug( LDAP_DEBUG_ANY,
 487                         "slap_global_control: unrecognized control: %s\n",
 488                         oid, 0, 0 );
 489                 return LDAP_CONTROL_NOT_FOUND;
 490         }
 491
 492         if ( cid ) *cid = ctrl->sc_cid;
 493
 494         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 495                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 496                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 497         {
 498                 return LDAP_COMPARE_TRUE;
 499         }
 500
 501 #if 0
 502         Debug( LDAP_DEBUG_TRACE,
 503                 "slap_global_control: unavailable control: %s\n",
 504                 oid, 0, 0 );
 505 #endif
 506
 507         return LDAP_COMPARE_FALSE;
 508 }
 509
 510 void slap_free_ctrls(
 511         Operation *op,
 512         LDAPControl **ctrls )
 513 {
 514         int i;
 515
 516         for (i=0; ctrls[i]; i++) {
 517                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 518         }
 519         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 520 }
 521
 522 int slap_parse_ctrl(
 523         Operation *op,
 524         SlapReply *rs,
 525         LDAPControl *control,
 526         const char **text )
 527 {
 528         struct slap_control *sc;
 529
 530         sc = find_ctrl( control->ldctl_oid );
 531         if( sc != NULL ) {
 532                 /* recognized control */
 533                 slap_mask_t tagmask;
 534                 switch( op->o_tag ) {
 535                 case LDAP_REQ_ADD:
 536                         tagmask = SLAP_CTRL_ADD;
 537                         break;
 538                 case LDAP_REQ_BIND:
 539                         tagmask = SLAP_CTRL_BIND;
 540                         break;
 541                 case LDAP_REQ_COMPARE:
 542                         tagmask = SLAP_CTRL_COMPARE;
 543                         break;
 544                 case LDAP_REQ_DELETE:
 545                         tagmask = SLAP_CTRL_DELETE;
 546                         break;
 547                 case LDAP_REQ_MODIFY:
 548                         tagmask = SLAP_CTRL_MODIFY;
 549                         break;
 550                 case LDAP_REQ_RENAME:
 551                         tagmask = SLAP_CTRL_RENAME;
 552                         break;
 553                 case LDAP_REQ_SEARCH:
 554                         tagmask = SLAP_CTRL_SEARCH;
 555                         break;
 556                 case LDAP_REQ_UNBIND:
 557                         tagmask = SLAP_CTRL_UNBIND;
 558                         break;
 559                 case LDAP_REQ_ABANDON:
 560                         tagmask = SLAP_CTRL_ABANDON;
 561                         break;
 562                 case LDAP_REQ_EXTENDED:
 563                         tagmask=~0L;
 564                         assert( op->ore_reqoid.bv_val != NULL );
 565                         if( sc->sc_extendedopsbv != NULL ) {
 566                                 int i;
 567                                 for( i=0; !BER_BVISNULL( &sc->sc_extendedopsbv[i] ); i++ ) {
 568                                         if( bvmatch( &op->ore_reqoid,
 569                                                 &sc->sc_extendedopsbv[i] ) )
 570                                         {
 571                                                 tagmask=0L;
 572                                                 break;
 573                                         }
 574                                 }
 575                         }
 576                         break;
 577                 default:
 578                         *text = "controls internal error";
 579                         return LDAP_OTHER;
 580                 }
 581
 582                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 583                         /* available extension */
 584                         int     rc;
 585
 586                         if( !sc->sc_parse ) {
 587                                 *text = "not yet implemented";
 588                                 return LDAP_OTHER;
 589                         }
 590
 591                         rc = sc->sc_parse( op, rs, control );
 592                         if ( rc ) {
 593                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 594                                 return rc;
 595                         }
 596
 597                 } else if( control->ldctl_iscritical ) {
 598                         /* unavailable CRITICAL control */
 599                         *text = "critical extension is unavailable";
 600                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 601                 }
 602         } else if( control->ldctl_iscritical ) {
 603                 /* unrecognized CRITICAL control */
 604                 *text = "critical extension is not recognized";
 605                 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 606         }
 607
 608         return LDAP_SUCCESS;
 609 }
 610
 611 int get_ctrls(
 612         Operation *op,
 613         SlapReply *rs,
 614         int sendres )
 615 {
 616         int nctrls = 0;
 617         ber_tag_t tag;
 618         ber_len_t len;
 619         char *opaque;
 620         BerElement *ber = op->o_ber;
 621         struct berval bv;
 622
 623         len = ber_pvt_ber_remaining(ber);
 624
 625         if( len == 0) {
 626                 /* no controls */
 627                 rs->sr_err = LDAP_SUCCESS;
 628                 return rs->sr_err;
 629         }
 630
 631         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 632                 if( tag == LBER_ERROR ) {
 633                         rs->sr_err = SLAPD_DISCONNECT;
 634                         rs->sr_text = "unexpected data in PDU";
 635                 }
 636
 637                 goto return_results;
 638         }
 639
 640         Debug( LDAP_DEBUG_TRACE,
 641                 "=> get_ctrls\n", 0, 0, 0 );
 642
 643         if( op->o_protocol < LDAP_VERSION3 ) {
 644                 rs->sr_err = SLAPD_DISCONNECT;
 645                 rs->sr_text = "controls require LDAPv3";
 646                 goto return_results;
 647         }
 648
 649         /* one for first control, one for termination */
 650         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 651
 652 #if 0
 653         if( op->ctrls == NULL ) {
 654                 rs->sr_err = LDAP_NO_MEMORY;
 655                 rs->sr_text = "no memory";
 656                 goto return_results;
 657         }
 658 #endif
 659
 660         op->o_ctrls[nctrls] = NULL;
 661
 662         /* step through each element */
 663         for( tag = ber_first_element( ber, &len, &opaque );
 664                 tag != LBER_ERROR;
 665                 tag = ber_next_element( ber, &len, opaque ) )
 666         {
 667                 LDAPControl *c;
 668                 LDAPControl **tctrls;
 669
 670                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 671                 memset(c, 0, sizeof(LDAPControl));
 672
 673                 /* allocate pointer space for current controls (nctrls)
 674                  * + this control + extra NULL
 675                  */
 676                 tctrls = op->o_tmprealloc( op->o_ctrls,
 677                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 678
 679 #if 0
 680                 if( tctrls == NULL ) {
 681                         ch_free( c );
 682                         ldap_controls_free(op->o_ctrls);
 683                         op->o_ctrls = NULL;
 684
 685                         rs->sr_err = LDAP_NO_MEMORY;
 686                         rs->sr_text = "no memory";
 687                         goto return_results;
 688                 }
 689 #endif
 690                 op->o_ctrls = tctrls;
 691
 692                 op->o_ctrls[nctrls++] = c;
 693                 op->o_ctrls[nctrls] = NULL;
 694
 695                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 696                 c->ldctl_oid = bv.bv_val;
 697
 698                 if( tag == LBER_ERROR ) {
 699                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 700                                 0, 0, 0 );
 701
 702                         slap_free_ctrls( op, op->o_ctrls );
 703                         op->o_ctrls = NULL;
 704                         rs->sr_err = SLAPD_DISCONNECT;
 705                         rs->sr_text = "decoding controls error";
 706                         goto return_results;
 707
 708                 } else if( c->ldctl_oid == NULL ) {
 709                         Debug( LDAP_DEBUG_TRACE,
 710                                 "get_ctrls: conn %lu got emtpy OID.\n",
 711                                 op->o_connid, 0, 0 );
 712
 713                         slap_free_ctrls( op, op->o_ctrls );
 714                         op->o_ctrls = NULL;
 715                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 716                         rs->sr_text = "OID field is empty";
 717                         goto return_results;
 718                 }
 719
 720                 tag = ber_peek_tag( ber, &len );
 721
 722                 if( tag == LBER_BOOLEAN ) {
 723                         ber_int_t crit;
 724                         tag = ber_scanf( ber, "b", &crit );
 725
 726                         if( tag == LBER_ERROR ) {
 727                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 728                                         0, 0, 0 );
 729                                 slap_free_ctrls( op, op->o_ctrls );
 730                                 op->o_ctrls = NULL;
 731                                 rs->sr_err = SLAPD_DISCONNECT;
 732                                 rs->sr_text = "decoding controls error";
 733                                 goto return_results;
 734                         }
 735
 736                         c->ldctl_iscritical = (crit != 0);
 737                         tag = ber_peek_tag( ber, &len );
 738                 }
 739
 740                 if( tag == LBER_OCTETSTRING ) {
 741                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 742
 743                         if( tag == LBER_ERROR ) {
 744                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 745                                         "%s (%scritical): get value failed.\n",
 746                                         op->o_connid, c->ldctl_oid,
 747                                         c->ldctl_iscritical ? "" : "non" );
 748                                 slap_free_ctrls( op, op->o_ctrls );
 749                                 op->o_ctrls = NULL;
 750                                 rs->sr_err = SLAPD_DISCONNECT;
 751                                 rs->sr_text = "decoding controls error";
 752                                 goto return_results;
 753                         }
 754                 }
 755
 756                 Debug( LDAP_DEBUG_TRACE,
 757                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 758                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 759
 760                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 761                 if ( rs->sr_err != LDAP_SUCCESS ) {
 762                         goto return_results;
 763                 }
 764         }
 765
 766 return_results:
 767         Debug( LDAP_DEBUG_TRACE,
 768                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 769                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 770
 771         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 772                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 773                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 774                         send_ldap_disconnect( op, rs );
 775                         rs->sr_err = SLAPD_DISCONNECT;
 776                 } else {
 777                         send_ldap_result( op, rs );
 778                 }
 779         }
 780
 781         return rs->sr_err;
 782 }
 783
 784 int
 785 slap_remove_control(
 786         Operation       *op,
 787         SlapReply       *rs,
 788         int             ctrl,
 789         BI_chk_controls fnc )
 790 {
 791         int             i, j;
 792
 793         switch ( op->o_ctrlflag[ ctrl ] ) {
 794         case SLAP_CONTROL_NONCRITICAL:
 795                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 796                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 797                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 798                         {
 799                                 j = i;
 800                         }
 801                 }
 802
 803                 if ( j == -1 ) {
 804                         rs->sr_err = LDAP_OTHER;
 805                         break;
 806                 }
 807
 808                 if ( fnc ) {
 809                         (void)fnc( op, rs );
 810                 }
 811
 812                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 813
 814                 if ( i > 1 ) {
 815                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 816                                 ( i - j ) * sizeof( LDAPControl * ) );
 817
 818                 } else {
 819                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
 820                         op->o_ctrls = NULL;
 821                 }
 822
 823                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
 824
 825                 Debug( LDAP_DEBUG_ANY, "%s: "
 826                         "non-critical control \"%s\" not supported; stripped.\n",
 827                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 828                 /* fall thru */
 829
 830         case SLAP_CONTROL_IGNORED:
 831         case SLAP_CONTROL_NONE:
 832                 rs->sr_err = SLAP_CB_CONTINUE;
 833                 break;
 834
 835         case SLAP_CONTROL_CRITICAL:
 836                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 837                 if ( fnc ) {
 838                         (void)fnc( op, rs );
 839                 }
 840                 Debug( LDAP_DEBUG_ANY, "%s: "
 841                         "critical control \"%s\" not supported.\n",
 842                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 843                 break;
 844
 845         default:
 846                 /* handle all cases! */
 847                 assert( 0 );
 848         }
 849
 850         return rs->sr_err;
 851 }
 852
 853 static int parseDontUseCopy (
 854         Operation *op,
 855         SlapReply *rs,
 856         LDAPControl *ctrl )
 857 {
 858         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
 859                 rs->sr_text = "dontUseCopy control specified multiple times";
 860                 return LDAP_PROTOCOL_ERROR;
 861         }
 862
 863         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 864                 rs->sr_text = "dontUseCopy control value not absent";
 865                 return LDAP_PROTOCOL_ERROR;
 866         }
 867
 868         if ( !ctrl->ldctl_iscritical ) {
 869                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
 870                 return LDAP_PROTOCOL_ERROR;
 871         }
 872
 873         op->o_dontUseCopy = SLAP_CONTROL_CRITICAL;
 874         return LDAP_SUCCESS;
 875 }
 876
 877 static int parseRelax (
 878         Operation *op,
 879         SlapReply *rs,
 880         LDAPControl *ctrl )
 881 {
 882         if ( op->o_relax != SLAP_CONTROL_NONE ) {
 883                 rs->sr_text = "relax control specified multiple times";
 884                 return LDAP_PROTOCOL_ERROR;
 885         }
 886
 887         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 888                 rs->sr_text = "relax control value not absent";
 889                 return LDAP_PROTOCOL_ERROR;
 890         }
 891
 892         op->o_relax = ctrl->ldctl_iscritical
 893                 ? SLAP_CONTROL_CRITICAL
 894                 : SLAP_CONTROL_NONCRITICAL;
 895
 896         return LDAP_SUCCESS;
 897 }
 898
 899 static int parseManageDSAit (
 900         Operation *op,
 901         SlapReply *rs,
 902         LDAPControl *ctrl )
 903 {
 904         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 905                 rs->sr_text = "manageDSAit control specified multiple times";
 906                 return LDAP_PROTOCOL_ERROR;
 907         }
 908
 909         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
 910                 rs->sr_text = "manageDSAit control value not absent";
 911                 return LDAP_PROTOCOL_ERROR;
 912         }
 913
 914         op->o_managedsait = ctrl->ldctl_iscritical
 915                 ? SLAP_CONTROL_CRITICAL
 916                 : SLAP_CONTROL_NONCRITICAL;
 917
 918         return LDAP_SUCCESS;
 919 }
 920
 921 static int parseProxyAuthz (
 922         Operation *op,
 923         SlapReply *rs,
 924         LDAPControl *ctrl )
 925 {
 926         int             rc;
 927         struct berval   dn = BER_BVNULL;
 928
 929         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 930                 rs->sr_text = "proxy authorization control specified multiple times";
 931                 return LDAP_PROTOCOL_ERROR;
 932         }
 933
 934         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
 935                 rs->sr_text = "proxy authorization control value absent";
 936                 return LDAP_PROTOCOL_ERROR;
 937         }
 938
 939         if ( !( global_allows & SLAP_ALLOW_PROXY_AUTHZ_ANON )
 940                 && BER_BVISEMPTY( &op->o_ndn ) )
 941         {
 942                 rs->sr_text = "anonymous proxied authorization not allowed";
 943                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 944         }
 945
 946         op->o_proxy_authz = ctrl->ldctl_iscritical
 947                 ? SLAP_CONTROL_CRITICAL
 948                 : SLAP_CONTROL_NONCRITICAL;
 949
 950         Debug( LDAP_DEBUG_ARGS,
 951                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 952                 op->o_connid,
 953                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 954                 0 );
 955
 956         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
 957                 Debug( LDAP_DEBUG_TRACE,
 958                         "parseProxyAuthz: conn=%lu anonymous\n",
 959                         op->o_connid, 0, 0 );
 960
 961                 /* anonymous */
 962                 if ( !BER_BVISNULL( &op->o_ndn ) ) {
 963                         op->o_ndn.bv_val[ 0 ] = '\0';
 964                 }
 965                 op->o_ndn.bv_len = 0;
 966
 967                 if ( !BER_BVISNULL( &op->o_dn ) ) {
 968                         op->o_dn.bv_val[ 0 ] = '\0';
 969                 }
 970                 op->o_dn.bv_len = 0;
 971
 972                 return LDAP_SUCCESS;
 973         }
 974
 975         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 976                         NULL, &dn, SLAP_GETDN_AUTHZID );
 977
 978         /* FIXME: empty DN in proxyAuthz control should be legal... */
 979         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 980                 if ( dn.bv_val ) {
 981                         ch_free( dn.bv_val );
 982                 }
 983                 rs->sr_text = "authzId mapping failed";
 984                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 985         }
 986
 987         Debug( LDAP_DEBUG_TRACE,
 988                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 989                 op->o_connid,
 990                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 991
 992         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 993
 994         if ( rc ) {
 995                 ch_free( dn.bv_val );
 996                 rs->sr_text = "not authorized to assume identity";
 997                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
 998         }
 999
1000         ch_free( op->o_ndn.bv_val );
1001         ch_free( op->o_dn.bv_val );
1002
1003         /*
1004          * NOTE: since slap_sasl_getdn() returns a normalized dn,
1005          * from now on op->o_dn is normalized
1006          */
1007         op->o_ndn = dn;
1008         ber_dupbv( &op->o_dn, &dn );
1009
1010         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
1011             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
1012
1013         return LDAP_SUCCESS;
1014 }
1015
1016 static int parseNoOp (
1017         Operation *op,
1018         SlapReply *rs,
1019         LDAPControl *ctrl )
1020 {
1021         if ( op->o_noop != SLAP_CONTROL_NONE ) {
1022                 rs->sr_text = "noop control specified multiple times";
1023                 return LDAP_PROTOCOL_ERROR;
1024         }
1025
1026         if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
1027                 rs->sr_text = "noop control value not empty";
1028                 return LDAP_PROTOCOL_ERROR;
1029         }
1030
1031         op->o_noop = ctrl->ldctl_iscritical
1032                 ? SLAP_CONTROL_CRITICAL
1033                 : SLAP_CONTROL_NONCRITICAL;
1034
1035         return LDAP_SUCCESS;
1036 }
1037
1038 static int parsePagedResults (
1039         Operation *op,
1040         SlapReply *rs,
1041         LDAPControl *ctrl )
1042 {
1043         int             rc = LDAP_SUCCESS;
1044         ber_tag_t       tag;
1045         ber_int_t       size;
1046         BerElement      *ber;
1047         struct berval   cookie = BER_BVNULL;
1048         PagedResultsState       *ps;
1049
1050         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1051                 rs->sr_text = "paged results control specified multiple times";
1052                 return LDAP_PROTOCOL_ERROR;
1053         }
1054
1055         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1056                 rs->sr_text = "paged results control value is absent";
1057                 return LDAP_PROTOCOL_ERROR;
1058         }
1059
1060         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1061                 rs->sr_text = "paged results control value is empty";
1062                 return LDAP_PROTOCOL_ERROR;
1063         }
1064
1065         /* Parse the control value
1066          *      realSearchControlValue ::= SEQUENCE {
1067          *              size    INTEGER (0..maxInt),
1068          *                              -- requested page size from client
1069          *                              -- result set size estimate from server
1070          *              cookie  OCTET STRING
1071          * }
1072          */
1073         ber = ber_init( &ctrl->ldctl_value );
1074         if ( ber == NULL ) {
1075                 rs->sr_text = "internal error";
1076                 return LDAP_OTHER;
1077         }
1078
1079         tag = ber_scanf( ber, "{im}", &size, &cookie );
1080
1081         if ( tag == LBER_ERROR ) {
1082                 rs->sr_text = "paged results control could not be decoded";
1083                 rc = LDAP_PROTOCOL_ERROR;
1084                 goto done;
1085         }
1086
1087         if ( size < 0 ) {
1088                 rs->sr_text = "paged results control size invalid";
1089                 rc = LDAP_PROTOCOL_ERROR;
1090                 goto done;
1091         }
1092
1093         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
1094         *ps = op->o_conn->c_pagedresults_state;
1095         ps->ps_size = size;
1096         op->o_pagedresults_state = ps;
1097
1098         /* NOTE: according to RFC 2696 3.:
1099
1100     If the page size is greater than or equal to the sizeLimit value, the
1101     server should ignore the control as the request can be satisfied in a
1102     single page.
1103
1104          * NOTE: this assumes that the op->ors_slimit be set
1105          * before the controls are parsed.
1106          */
1107
1108         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1109                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1110
1111         } else if ( ctrl->ldctl_iscritical ) {
1112                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1113
1114         } else {
1115                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1116         }
1117
1118 done:;
1119         (void)ber_free( ber, 1 );
1120         return rc;
1121 }
1122
1123 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
1124 static int parseSortedResults (
1125         Operation *op,
1126         SlapReply *rs,
1127         LDAPControl *ctrl )
1128 {
1129         int             rc = LDAP_SUCCESS;
1130
1131         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1132                 rs->sr_text = "sorted results control specified multiple times";
1133                 return LDAP_PROTOCOL_ERROR;
1134         }
1135
1136         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1137                 rs->sr_text = "sorted results control value is absent";
1138                 return LDAP_PROTOCOL_ERROR;
1139         }
1140
1141         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1142                 rs->sr_text = "sorted results control value is empty";
1143                 return LDAP_PROTOCOL_ERROR;
1144         }
1145
1146         /* blow off parsing the value */
1147
1148         op->o_sortedresults = ctrl->ldctl_iscritical
1149                 ? SLAP_CONTROL_CRITICAL
1150                 : SLAP_CONTROL_NONCRITICAL;
1151
1152         return rc;
1153 }
1154 #endif
1155
1156 static int parseAssert (
1157         Operation *op,
1158         SlapReply *rs,
1159         LDAPControl *ctrl )
1160 {
1161         BerElement      *ber;
1162         struct berval   fstr = BER_BVNULL;
1163
1164         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1165                 rs->sr_text = "assert control specified multiple times";
1166                 return LDAP_PROTOCOL_ERROR;
1167         }
1168
1169         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1170                 rs->sr_text = "assert control value is absent";
1171                 return LDAP_PROTOCOL_ERROR;
1172         }
1173
1174         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1175                 rs->sr_text = "assert control value is empty";
1176                 return LDAP_PROTOCOL_ERROR;
1177         }
1178
1179         ber = ber_init( &(ctrl->ldctl_value) );
1180         if (ber == NULL) {
1181                 rs->sr_text = "assert control: internal error";
1182                 return LDAP_OTHER;
1183         }
1184
1185         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1186                 &rs->sr_text);
1187         (void) ber_free( ber, 1 );
1188         if( rs->sr_err != LDAP_SUCCESS ) {
1189                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1190                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1191                         send_ldap_disconnect( op, rs );
1192                         rs->sr_err = SLAPD_DISCONNECT;
1193                 } else {
1194                         send_ldap_result( op, rs );
1195                 }
1196                 if( op->o_assertion != NULL ) {
1197                         filter_free_x( op, op->o_assertion );
1198                 }
1199                 return rs->sr_err;
1200         }
1201
1202 #ifdef LDAP_DEBUG
1203         filter2bv_x( op, op->o_assertion, &fstr );
1204
1205         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1206                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1207         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1208 #endif
1209
1210         op->o_assert = ctrl->ldctl_iscritical
1211                 ? SLAP_CONTROL_CRITICAL
1212                 : SLAP_CONTROL_NONCRITICAL;
1213
1214         rs->sr_err = LDAP_SUCCESS;
1215         return LDAP_SUCCESS;
1216 }
1217
1218 static int parsePreRead (
1219         Operation *op,
1220         SlapReply *rs,
1221         LDAPControl *ctrl )
1222 {
1223         ber_len_t siz, off, i;
1224         AttributeName *an = NULL;
1225         BerElement      *ber;
1226
1227         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1228                 rs->sr_text = "preread control specified multiple times";
1229                 return LDAP_PROTOCOL_ERROR;
1230         }
1231
1232         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1233                 rs->sr_text = "preread control value is absent";
1234                 return LDAP_PROTOCOL_ERROR;
1235         }
1236
1237         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1238                 rs->sr_text = "preread control value is empty";
1239                 return LDAP_PROTOCOL_ERROR;
1240         }
1241
1242 #ifdef LDAP_X_TXN
1243         if ( op->o_txnSpec ) { /* temporary limitation */
1244                 rs->sr_text = "cannot perform pre-read in transaction";
1245                 return LDAP_UNWILLING_TO_PERFORM;
1246         }
1247 #endif
1248
1249         ber = ber_init( &(ctrl->ldctl_value) );
1250         if (ber == NULL) {
1251                 rs->sr_text = "preread control: internal error";
1252                 return LDAP_OTHER;
1253         }
1254
1255         rs->sr_err = LDAP_SUCCESS;
1256
1257         siz = sizeof( AttributeName );
1258         off = offsetof( AttributeName, an_name );
1259         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1260                 rs->sr_text = "preread control: decoding error";
1261                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1262                 goto done;
1263         }
1264
1265         for( i=0; i<siz; i++ ) {
1266                 const char      *dummy = NULL;
1267
1268                 an[i].an_desc = NULL;
1269                 an[i].an_oc = NULL;
1270                 an[i].an_oc_exclude = 0;
1271                 rs->sr_err = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1272                 if ( rs->sr_err != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1273                         rs->sr_text = dummy
1274                                 ? dummy
1275                                 : "postread control: unknown attributeType";
1276                         goto done;
1277                 }
1278         }
1279
1280         op->o_preread = ctrl->ldctl_iscritical
1281                 ? SLAP_CONTROL_CRITICAL
1282                 : SLAP_CONTROL_NONCRITICAL;
1283
1284         op->o_preread_attrs = an;
1285
1286 done:
1287         (void) ber_free( ber, 1 );
1288         return rs->sr_err;
1289 }
1290
1291 static int parsePostRead (
1292         Operation *op,
1293         SlapReply *rs,
1294         LDAPControl *ctrl )
1295 {
1296         ber_len_t siz, off, i;
1297         AttributeName *an = NULL;
1298         BerElement      *ber;
1299
1300         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1301                 rs->sr_text = "postread control specified multiple times";
1302                 return LDAP_PROTOCOL_ERROR;
1303         }
1304
1305         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1306                 rs->sr_text = "postread control value is absent";
1307                 return LDAP_PROTOCOL_ERROR;
1308         }
1309
1310         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1311                 rs->sr_text = "postread control value is empty";
1312                 return LDAP_PROTOCOL_ERROR;
1313         }
1314
1315 #ifdef LDAP_X_TXN
1316         if ( op->o_txnSpec ) { /* temporary limitation */
1317                 rs->sr_text = "cannot perform post-read in transaction";
1318                 return LDAP_UNWILLING_TO_PERFORM;
1319         }
1320 #endif
1321
1322         ber = ber_init( &(ctrl->ldctl_value) );
1323         if (ber == NULL) {
1324                 rs->sr_text = "postread control: internal error";
1325                 return LDAP_OTHER;
1326         }
1327
1328         rs->sr_err = LDAP_SUCCESS;
1329         siz = sizeof( AttributeName );
1330         off = offsetof( AttributeName, an_name );
1331         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1332                 rs->sr_text = "postread control: decoding error";
1333                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1334                 goto done;
1335         }
1336
1337         for ( i = 0; i < siz; i++ ) {
1338                 const char      *dummy = NULL;
1339                 int             rc;
1340
1341                 an[i].an_desc = NULL;
1342                 an[i].an_oc = NULL;
1343                 an[i].an_oc_exclude = 0;
1344                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1345                 if ( rc != LDAP_SUCCESS ) {
1346                         int                     i;
1347                         static struct berval    special_attrs[] = {
1348                                 BER_BVC( LDAP_NO_ATTRS ),
1349                                 BER_BVC( LDAP_ALL_USER_ATTRIBUTES ),
1350                                 BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ),
1351                                 BER_BVNULL
1352                         };
1353
1354                         /* deal with special attribute types */
1355                         for ( i = 0; !BER_BVISNULL( &special_attrs[ i ] ); i++ ) {
1356                                 if ( bvmatch( &an[i].an_name, &special_attrs[ i ] ) ) {
1357                                         break;
1358                                 }
1359                         }
1360
1361                         if ( BER_BVISNULL( &special_attrs[ i ] ) && ctrl->ldctl_iscritical ) {
1362                                 rs->sr_err = rc;
1363                                 rs->sr_text = dummy
1364                                         ? dummy
1365                                         : "postread control: unknown attributeType";
1366                                 goto done;
1367                         }
1368                 }
1369         }
1370
1371         op->o_postread = ctrl->ldctl_iscritical
1372                 ? SLAP_CONTROL_CRITICAL
1373                 : SLAP_CONTROL_NONCRITICAL;
1374
1375         op->o_postread_attrs = an;
1376
1377 done:
1378         (void) ber_free( ber, 1 );
1379         return rs->sr_err;
1380 }
1381
1382 static int parseValuesReturnFilter (
1383         Operation *op,
1384         SlapReply *rs,
1385         LDAPControl *ctrl )
1386 {
1387         BerElement      *ber;
1388         struct berval   fstr = BER_BVNULL;
1389
1390         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1391                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1392                 return LDAP_PROTOCOL_ERROR;
1393         }
1394
1395         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1396                 rs->sr_text = "valuesReturnFilter control value is absent";
1397                 return LDAP_PROTOCOL_ERROR;
1398         }
1399
1400         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1401                 rs->sr_text = "valuesReturnFilter control value is empty";
1402                 return LDAP_PROTOCOL_ERROR;
1403         }
1404
1405         ber = ber_init( &(ctrl->ldctl_value) );
1406         if (ber == NULL) {
1407                 rs->sr_text = "internal error";
1408                 return LDAP_OTHER;
1409         }
1410
1411         rs->sr_err = get_vrFilter( op, ber,
1412                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1413
1414         (void) ber_free( ber, 1 );
1415
1416         if( rs->sr_err != LDAP_SUCCESS ) {
1417                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1418                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1419                         send_ldap_disconnect( op, rs );
1420                         rs->sr_err = SLAPD_DISCONNECT;
1421                 } else {
1422                         send_ldap_result( op, rs );
1423                 }
1424                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1425         }
1426 #ifdef LDAP_DEBUG
1427         else {
1428                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1429         }
1430
1431         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1432                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1433         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1434 #endif
1435
1436         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1437                 ? SLAP_CONTROL_CRITICAL
1438                 : SLAP_CONTROL_NONCRITICAL;
1439
1440         rs->sr_err = LDAP_SUCCESS;
1441         return LDAP_SUCCESS;
1442 }
1443
1444 static int parseSubentries (
1445         Operation *op,
1446         SlapReply *rs,
1447         LDAPControl *ctrl )
1448 {
1449         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1450                 rs->sr_text = "subentries control specified multiple times";
1451                 return LDAP_PROTOCOL_ERROR;
1452         }
1453
1454         /* FIXME: should use BER library */
1455         if( ( ctrl->ldctl_value.bv_len != 3 )
1456                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1457                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1458         {
1459                 rs->sr_text = "subentries control value encoding is bogus";
1460                 return LDAP_PROTOCOL_ERROR;
1461         }
1462
1463         op->o_subentries = ctrl->ldctl_iscritical
1464                 ? SLAP_CONTROL_CRITICAL
1465                 : SLAP_CONTROL_NONCRITICAL;
1466
1467         if (ctrl->ldctl_value.bv_val[2]) {
1468                 set_subentries_visibility( op );
1469         }
1470
1471         return LDAP_SUCCESS;
1472 }
1473
1474 static int parsePermissiveModify (
1475         Operation *op,
1476         SlapReply *rs,
1477         LDAPControl *ctrl )
1478 {
1479         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1480                 rs->sr_text = "permissiveModify control specified multiple times";
1481                 return LDAP_PROTOCOL_ERROR;
1482         }
1483
1484         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1485                 rs->sr_text = "permissiveModify control value not absent";
1486                 return LDAP_PROTOCOL_ERROR;
1487         }
1488
1489         op->o_permissive_modify = ctrl->ldctl_iscritical
1490                 ? SLAP_CONTROL_CRITICAL
1491                 : SLAP_CONTROL_NONCRITICAL;
1492
1493         return LDAP_SUCCESS;
1494 }
1495
1496 static int parseDomainScope (
1497         Operation *op,
1498         SlapReply *rs,
1499         LDAPControl *ctrl )
1500 {
1501         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1502                 rs->sr_text = "domainScope control specified multiple times";
1503                 return LDAP_PROTOCOL_ERROR;
1504         }
1505
1506         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1507                 rs->sr_text = "domainScope control value not empty";
1508                 return LDAP_PROTOCOL_ERROR;
1509         }
1510
1511         op->o_domain_scope = ctrl->ldctl_iscritical
1512                 ? SLAP_CONTROL_CRITICAL
1513                 : SLAP_CONTROL_NONCRITICAL;
1514
1515         return LDAP_SUCCESS;
1516 }
1517
1518 #ifdef SLAP_CONTROL_X_TREE_DELETE
1519 static int parseTreeDelete (
1520         Operation *op,
1521         SlapReply *rs,
1522         LDAPControl *ctrl )
1523 {
1524         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1525                 rs->sr_text = "treeDelete control specified multiple times";
1526                 return LDAP_PROTOCOL_ERROR;
1527         }
1528
1529         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1530                 rs->sr_text = "treeDelete control value not absent";
1531                 return LDAP_PROTOCOL_ERROR;
1532         }
1533
1534         op->o_tree_delete = ctrl->ldctl_iscritical
1535                 ? SLAP_CONTROL_CRITICAL
1536                 : SLAP_CONTROL_NONCRITICAL;
1537
1538         return LDAP_SUCCESS;
1539 }
1540 #endif
1541
1542 static int parseSearchOptions (
1543         Operation *op,
1544         SlapReply *rs,
1545         LDAPControl *ctrl )
1546 {
1547         BerElement *ber;
1548         ber_int_t search_flags;
1549         ber_tag_t tag;
1550
1551         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1552                 rs->sr_text = "searchOptions control value is absent";
1553                 return LDAP_PROTOCOL_ERROR;
1554         }
1555
1556         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1557                 rs->sr_text = "searchOptions control value is empty";
1558                 return LDAP_PROTOCOL_ERROR;
1559         }
1560
1561         ber = ber_init( &ctrl->ldctl_value );
1562         if( ber == NULL ) {
1563                 rs->sr_text = "internal error";
1564                 return LDAP_OTHER;
1565         }
1566
1567         tag = ber_scanf( ber, "{i}", &search_flags );
1568         (void) ber_free( ber, 1 );
1569
1570         if ( tag == LBER_ERROR ) {
1571                 rs->sr_text = "searchOptions control decoding error";
1572                 return LDAP_PROTOCOL_ERROR;
1573         }
1574
1575         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1576                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1577                         rs->sr_text = "searchOptions control specified multiple times "
1578                                 "or with domainScope control";
1579                         return LDAP_PROTOCOL_ERROR;
1580                 }
1581
1582                 op->o_domain_scope = ctrl->ldctl_iscritical
1583                         ? SLAP_CONTROL_CRITICAL
1584                         : SLAP_CONTROL_NONCRITICAL;
1585         }
1586
1587         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1588                 /* Other search flags not recognised so far,
1589                  * including:
1590                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1591                  */
1592                 rs->sr_text = "searchOptions contained unrecognized flag";
1593                 return LDAP_UNWILLING_TO_PERFORM;
1594         }
1595
1596         return LDAP_SUCCESS;
1597 }
1598
1599 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
1600 static int parseSessionTracking(
1601         Operation *op,
1602         SlapReply *rs,
1603         LDAPControl *ctrl )
1604 {
1605         BerElement              *ber;
1606         ber_tag_t               tag;
1607         ber_len_t               len;
1608         int                     rc;
1609
1610         struct berval           sessionSourceIp = BER_BVNULL,
1611                                 sessionSourceName = BER_BVNULL,
1612                                 formatOID = BER_BVNULL,
1613                                 sessionTrackingIdentifier = BER_BVNULL;
1614
1615         size_t                  st_len, st_pos;
1616
1617         if ( ctrl->ldctl_iscritical ) {
1618                 rs->sr_text = "sessionTracking criticality is TRUE";
1619                 return LDAP_PROTOCOL_ERROR;
1620         }
1621
1622         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1623                 rs->sr_text = "sessionTracking control value is absent";
1624                 return LDAP_PROTOCOL_ERROR;
1625         }
1626
1627         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1628                 rs->sr_text = "sessionTracking control value is empty";
1629                 return LDAP_PROTOCOL_ERROR;
1630         }
1631
1632         ber = ber_init( &ctrl->ldctl_value );
1633         if ( ber == NULL ) {
1634                 rs->sr_text = "internal error";
1635                 return LDAP_OTHER;
1636         }
1637
1638         tag = ber_skip_tag( ber, &len );
1639         if ( tag != LBER_SEQUENCE ) {
1640                 tag = LBER_ERROR;
1641                 goto error;
1642         }
1643
1644         /* sessionSourceIp */
1645         tag = ber_peek_tag( ber, &len );
1646         if ( tag == LBER_DEFAULT ) {
1647                 tag = LBER_ERROR;
1648                 goto error;
1649         }
1650
1651         if ( len == 0 ) {
1652                 tag = ber_skip_tag( ber, &len );
1653
1654         } else if ( len > 128 ) {
1655                 rs->sr_text = "sessionTracking.sessionSourceIp too long";
1656                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1657                 goto error;
1658
1659         } else {
1660                 tag = ber_scanf( ber, "m", &sessionSourceIp );
1661         }
1662
1663         if ( ldif_is_not_printable( sessionSourceIp.bv_val, sessionSourceIp.bv_len ) ) {
1664                 BER_BVZERO( &sessionSourceIp );
1665         }
1666
1667         /* sessionSourceName */
1668         tag = ber_peek_tag( ber, &len );
1669         if ( tag == LBER_DEFAULT ) {
1670                 tag = LBER_ERROR;
1671                 goto error;
1672         }
1673
1674         if ( len == 0 ) {
1675                 tag = ber_skip_tag( ber, &len );
1676
1677         } else if ( len > 65536 ) {
1678                 rs->sr_text = "sessionTracking.sessionSourceName too long";
1679                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1680                 goto error;
1681
1682         } else {
1683                 tag = ber_scanf( ber, "m", &sessionSourceName );
1684         }
1685
1686         if ( ldif_is_not_printable( sessionSourceName.bv_val, sessionSourceName.bv_len ) ) {
1687                 BER_BVZERO( &sessionSourceName );
1688         }
1689
1690         /* formatOID */
1691         tag = ber_peek_tag( ber, &len );
1692         if ( tag == LBER_DEFAULT ) {
1693                 tag = LBER_ERROR;
1694                 goto error;
1695         }
1696
1697         if ( len == 0 ) {
1698                 rs->sr_text = "sessionTracking.formatOID empty";
1699                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1700                 goto error;
1701
1702         } else if ( len > 1024 ) {
1703                 rs->sr_text = "sessionTracking.formatOID too long";
1704                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1705                 goto error;
1706
1707         } else {
1708                 tag = ber_scanf( ber, "m", &formatOID );
1709         }
1710
1711         rc = numericoidValidate( NULL, &formatOID );
1712         if ( rc != LDAP_SUCCESS ) {
1713                 rs->sr_text = "sessionTracking.formatOID invalid";
1714                 goto error;
1715         }
1716
1717         /* sessionTrackingIdentifier */
1718         tag = ber_peek_tag( ber, &len );
1719         if ( tag == LBER_DEFAULT ) {
1720                 tag = LBER_ERROR;
1721                 goto error;
1722         }
1723
1724         if ( len == 0 ) {
1725                 tag = ber_skip_tag( ber, &len );
1726
1727         } else {
1728                 /* note: should not be more than 65536... */
1729                 tag = ber_scanf( ber, "m", &sessionTrackingIdentifier );
1730         }
1731
1732         if ( ldif_is_not_printable( sessionTrackingIdentifier.bv_val, sessionTrackingIdentifier.bv_len ) ) {
1733                 BER_BVZERO( &sessionTrackingIdentifier );
1734         }
1735
1736         /* closure */
1737         tag = ber_skip_tag( ber, &len );
1738         if ( tag == LBER_DEFAULT && len == 0 ) {
1739                 tag = 0;
1740         }
1741
1742         st_len = 0;
1743         if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1744                 st_len += STRLENOF( "IP=" ) + sessionSourceIp.bv_len;
1745         }
1746         if ( !BER_BVISNULL( &sessionSourceName ) ) {
1747                 if ( st_len ) st_len++;
1748                 st_len += STRLENOF( "NAME=" ) + sessionSourceName.bv_len;
1749         }
1750         if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1751                 if ( st_len ) st_len++;
1752                 st_len += STRLENOF( "ID=" ) + sessionTrackingIdentifier.bv_len;
1753         }
1754
1755         if ( st_len == 0 ) {
1756                 goto error;
1757         }
1758
1759         st_len += STRLENOF( " []" );
1760         st_pos = strlen( op->o_log_prefix );
1761
1762         if ( sizeof( op->o_log_prefix ) - st_pos > st_len ) {
1763                 char    *ptr = &op->o_log_prefix[ st_pos ];
1764
1765                 ptr = lutil_strcopy( ptr, " [" /*]*/ );
1766
1767                 st_len = 0;
1768                 if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1769                         ptr = lutil_strcopy( ptr, "IP=" );
1770                         ptr = lutil_strcopy( ptr, sessionSourceIp.bv_val );
1771                         st_len++;
1772                 }
1773
1774                 if ( !BER_BVISNULL( &sessionSourceName ) ) {
1775                         if ( st_len ) *ptr++ = ' ';
1776                         ptr = lutil_strcopy( ptr, "NAME=" );
1777                         ptr = lutil_strcopy( ptr, sessionSourceName.bv_val );
1778                         st_len++;
1779                 }
1780
1781                 if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1782                         if ( st_len ) *ptr++ = ' ';
1783                         ptr = lutil_strcopy( ptr, "ID=" );
1784                         ptr = lutil_strcopy( ptr, sessionTrackingIdentifier.bv_val );
1785                 }
1786
1787                 *ptr++ = /*[*/ ']';
1788                 *ptr = '\0';
1789         }
1790
1791 error:;
1792         (void)ber_free( ber, 1 );
1793
1794         if ( tag == LBER_ERROR ) {
1795                 rs->sr_text = "sessionTracking control decoding error";
1796                 return LDAP_PROTOCOL_ERROR;
1797         }
1798
1799
1800         return rs->sr_err;
1801 }
1802 #endif