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 1998-2014 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 "ldif.h"
  25 #include "lutil.h"
  26
  27 #include "../../libraries/liblber/lber-int.h"
  28
  29 static SLAP_CTRL_PARSE_FN parseAssert;
  30 static SLAP_CTRL_PARSE_FN parseDomainScope;
  31 static SLAP_CTRL_PARSE_FN parseDontUseCopy;
  32 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  33 static SLAP_CTRL_PARSE_FN parseNoOp;
  34 static SLAP_CTRL_PARSE_FN parsePagedResults;
  35 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  36 static SLAP_CTRL_PARSE_FN parsePreRead, parsePostRead;
  37 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  38 static SLAP_CTRL_PARSE_FN parseRelax;
  39 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  40 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
  41 static SLAP_CTRL_PARSE_FN parseSortedResults;
  42 #endif
  43 static SLAP_CTRL_PARSE_FN parseSubentries;
  44 #ifdef SLAP_CONTROL_X_TREE_DELETE
  45 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  46 #endif
  47 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  48 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
  49 static SLAP_CTRL_PARSE_FN parseSessionTracking;
  50 #endif
  51 #ifdef SLAP_CONTROL_X_WHATFAILED
  52 static SLAP_CTRL_PARSE_FN parseWhatFailed;
  53 #endif
  54
  55 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  56
  57 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  58 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  59
  60 struct slap_control_ids slap_cids;
  61
  62 struct slap_control {
  63         /* Control OID */
  64         char *sc_oid;
  65
  66         /* The controlID for this control */
  67         int sc_cid;
  68
  69         /* Operations supported by control */
  70         slap_mask_t sc_mask;
  71
  72         /* Extended operations supported by control */
  73         char **sc_extendedops;          /* input */
  74         BerVarray sc_extendedopsbv;     /* run-time use */
  75
  76         /* Control parsing callback */
  77         SLAP_CTRL_PARSE_FN *sc_parse;
  78
  79         LDAP_SLIST_ENTRY(slap_control) sc_next;
  80 };
  81
  82 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  83         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  84
  85 /*
  86  * all known request control OIDs should be added to this list
  87  */
  88 /*
  89  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  90  * addresses an undefined control; this allows to safely test for
  91  * well known controls even if they are not registered, e.g. if
  92  * they get moved to modules.  An example is sc_LDAPsync, which
  93  * is implemented in the syncprov overlay and thus, if configured
  94  * as dynamic module, may not be registered.  One side effect is that
  95  * slap_known_controls[0] == NULL, so it should always be used
  96  * starting from 1.
  97  * FIXME: should we define the "undefined control" oid?
  98  */
  99 char *slap_known_controls[SLAP_MAX_CIDS+1];
 100 static int num_known_controls = 1;
 101
 102 static char *proxy_authz_extops[] = {
 103         LDAP_EXOP_MODIFY_PASSWD,
 104         LDAP_EXOP_WHO_AM_I,
 105         LDAP_EXOP_REFRESH,
 106         NULL
 107 };
 108
 109 static char *manageDSAit_extops[] = {
 110         LDAP_EXOP_REFRESH,
 111         NULL
 112 };
 113
 114 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 115 static char *session_tracking_extops[] = {
 116         LDAP_EXOP_MODIFY_PASSWD,
 117         LDAP_EXOP_WHO_AM_I,
 118         LDAP_EXOP_REFRESH,
 119         NULL
 120 };
 121 #endif
 122
 123 static struct slap_control control_defs[] = {
 124         {  LDAP_CONTROL_ASSERT,
 125                 (int)offsetof(struct slap_control_ids, sc_assert),
 126                 SLAP_CTRL_UPDATE|SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH,
 127                 NULL, NULL,
 128                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 129         { LDAP_CONTROL_PRE_READ,
 130                 (int)offsetof(struct slap_control_ids, sc_preRead),
 131                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 132                 NULL, NULL,
 133                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 134         { LDAP_CONTROL_POST_READ,
 135                 (int)offsetof(struct slap_control_ids, sc_postRead),
 136                 SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME,
 137                 NULL, NULL,
 138                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 139         { LDAP_CONTROL_VALUESRETURNFILTER,
 140                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 141                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH,
 142                 NULL, NULL,
 143                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 144         { LDAP_CONTROL_PAGEDRESULTS,
 145                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 146                 SLAP_CTRL_SEARCH,
 147                 NULL, NULL,
 148                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 149 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 150         { LDAP_CONTROL_SORTREQUEST,
 151                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 152                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 153                 NULL, NULL,
 154                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 155 #endif
 156         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 157                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 158                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 159                 NULL, NULL,
 160                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 161         { LDAP_CONTROL_DONTUSECOPY,
 162                 (int)offsetof(struct slap_control_ids, sc_dontUseCopy),
 163                 SLAP_CTRL_GLOBAL|SLAP_CTRL_INTROGATE,
 164                 NULL, NULL,
 165                 parseDontUseCopy, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 166         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 167                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 168                 SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE,
 169                 NULL, NULL,
 170                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 171 #ifdef SLAP_CONTROL_X_TREE_DELETE
 172         { LDAP_CONTROL_X_TREE_DELETE,
 173                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 174                 SLAP_CTRL_DELETE|SLAP_CTRL_HIDE,
 175                 NULL, NULL,
 176                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 177 #endif
 178         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 179                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 180                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE,
 181                 NULL, NULL,
 182                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 183         { LDAP_CONTROL_SUBENTRIES,
 184                 (int)offsetof(struct slap_control_ids, sc_subentries),
 185                 SLAP_CTRL_SEARCH,
 186                 NULL, NULL,
 187                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 188         { LDAP_CONTROL_NOOP,
 189                 (int)offsetof(struct slap_control_ids, sc_noOp),
 190                 SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE,
 191                 NULL, NULL,
 192                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 193         { LDAP_CONTROL_RELAX,
 194                 (int)offsetof(struct slap_control_ids, sc_relax),
 195                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 196                 NULL, NULL,
 197                 parseRelax, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 198 #ifdef LDAP_X_TXN
 199         { LDAP_CONTROL_X_TXN_SPEC,
 200                 (int)offsetof(struct slap_control_ids, sc_txnSpec),
 201                 SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE,
 202                 NULL, NULL,
 203                 txn_spec_ctrl, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 204 #endif
 205         { LDAP_CONTROL_MANAGEDSAIT,
 206                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 207                 SLAP_CTRL_ACCESS,
 208                 manageDSAit_extops, NULL,
 209                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 210         { LDAP_CONTROL_PROXY_AUTHZ,
 211                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 212                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS,
 213                 proxy_authz_extops, NULL,
 214                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 215 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
 216         { LDAP_CONTROL_X_SESSION_TRACKING,
 217                 (int)offsetof(struct slap_control_ids, sc_sessionTracking),
 218                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS|SLAP_CTRL_BIND|SLAP_CTRL_HIDE,
 219                 session_tracking_extops, NULL,
 220                 parseSessionTracking, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 221 #endif
 222 #ifdef SLAP_CONTROL_X_WHATFAILED
 223         { LDAP_CONTROL_X_WHATFAILED,
 224                 (int)offsetof(struct slap_control_ids, sc_whatFailed),
 225                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE,
 226                 NULL, NULL,
 227                 parseWhatFailed, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 228 #endif
 229
 230         { NULL, 0, 0, NULL, 0, NULL, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 231 };
 232
 233 static struct slap_control *
 234 find_ctrl( const char *oid );
 235
 236 /*
 237  * Register a supported control.
 238  *
 239  * This can be called by an OpenLDAP plugin or, indirectly, by a
 240  * SLAPI plugin calling slapi_register_supported_control().
 241  *
 242  * NOTE: if flags == 1 the control is replaced if already registered;
 243  * otherwise registering an already registered control is not allowed.
 244  */
 245 int
 246 register_supported_control2(const char *controloid,
 247         slap_mask_t controlmask,
 248         char **controlexops,
 249         SLAP_CTRL_PARSE_FN *controlparsefn,
 250         unsigned flags,
 251         int *controlcid)
 252 {
 253         struct slap_control *sc = NULL;
 254         int i;
 255         BerVarray extendedopsbv = NULL;
 256
 257         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 258                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 259                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 260                 SLAP_MAX_CIDS, 0, 0 );
 261                 return LDAP_OTHER;
 262         }
 263
 264         if ( controloid == NULL ) {
 265                 return LDAP_PARAM_ERROR;
 266         }
 267
 268         /* check if already registered */
 269         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 270                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 271                         if ( flags == 1 ) {
 272                                 Debug( LDAP_DEBUG_TRACE,
 273                                         "Control %s already registered; replacing.\n",
 274                                         controloid, 0, 0 );
 275                                 /* (find and) replace existing handler */
 276                                 sc = find_ctrl( controloid );
 277                                 assert( sc != NULL );
 278                                 break;
 279                         }
 280
 281                         Debug( LDAP_DEBUG_ANY,
 282                                 "Control %s already registered.\n",
 283                                 controloid, 0, 0 );
 284                         return LDAP_PARAM_ERROR;
 285                 }
 286         }
 287
 288         /* turn compatible extended operations into bervals */
 289         if ( controlexops != NULL ) {
 290                 int i;
 291
 292                 for ( i = 0; controlexops[ i ]; i++ );
 293
 294                 extendedopsbv = ber_memcalloc( i + 1, sizeof( struct berval ) );
 295                 if ( extendedopsbv == NULL ) {
 296                         return LDAP_NO_MEMORY;
 297                 }
 298
 299                 for ( i = 0; controlexops[ i ]; i++ ) {
 300                         ber_str2bv( controlexops[ i ], 0, 1, &extendedopsbv[ i ] );
 301                 }
 302         }
 303
 304         if ( sc == NULL ) {
 305                 sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 306                 if ( sc == NULL ) {
 307                         ber_bvarray_free( extendedopsbv );
 308                         return LDAP_NO_MEMORY;
 309                 }
 310
 311                 sc->sc_oid = ch_strdup( controloid );
 312                 sc->sc_cid = num_known_controls;
 313
 314                 /* Update slap_known_controls, too. */
 315                 slap_known_controls[num_known_controls - 1] = sc->sc_oid;
 316                 slap_known_controls[num_known_controls++] = NULL;
 317
 318                 LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 319                 LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 320
 321         } else {
 322                 if ( sc->sc_extendedopsbv ) {
 323                         /* FIXME: in principle, we should rather merge
 324                          * existing extops with those supported by the
 325                          * new control handling implementation.
 326                          * In fact, whether a control is compatible with
 327                          * an extop should not be a matter of implementation.
 328                          * We likely also need a means for a newly
 329                          * registered extop to declare that it is
 330                          * comptible with an already registered control.
 331                          */
 332                         ber_bvarray_free( sc->sc_extendedopsbv );
 333                         sc->sc_extendedopsbv = NULL;
 334                         sc->sc_extendedops = NULL;
 335                 }
 336         }
 337
 338         sc->sc_extendedopsbv = extendedopsbv;
 339         sc->sc_mask = controlmask;
 340         sc->sc_parse = controlparsefn;
 341         if ( controlcid ) {
 342                 *controlcid = sc->sc_cid;
 343         }
 344
 345         return LDAP_SUCCESS;
 346 }
 347
 348 #ifdef SLAP_CONFIG_DELETE
 349 int
 350 unregister_supported_control( const char *controloid )
 351 {
 352         struct slap_control *sc;
 353         int i;
 354
 355         if ( controloid == NULL || (sc = find_ctrl( controloid )) == NULL ){
 356                 return -1;
 357         }
 358
 359         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 360                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 361                         do {
 362                                 slap_known_controls[ i ] = slap_known_controls[ i+1 ];
 363                         } while ( slap_known_controls[ i++ ] );
 364                         num_known_controls--;
 365                         break;
 366                 }
 367         }
 368
 369         LDAP_SLIST_REMOVE(&controls_list, sc, slap_control, sc_next);
 370         ch_free( sc->sc_oid );
 371         if ( sc->sc_extendedopsbv != NULL ) {
 372                 ber_bvarray_free( sc->sc_extendedopsbv );
 373         }
 374         ch_free( sc );
 375
 376         return 0;
 377 }
 378 #endif /* SLAP_CONFIG_DELETE */
 379
 380 /*
 381  * One-time initialization of internal controls.
 382  */
 383 int
 384 slap_controls_init( void )
 385 {
 386         int i, rc;
 387
 388         rc = LDAP_SUCCESS;
 389
 390         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 391                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 392                 rc = register_supported_control( control_defs[i].sc_oid,
 393                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 394                         control_defs[i].sc_parse, cid );
 395                 if ( rc != LDAP_SUCCESS ) break;
 396         }
 397
 398         return rc;
 399 }
 400
 401 /*
 402  * Free memory associated with list of supported controls.
 403  */
 404 void
 405 controls_destroy( void )
 406 {
 407         struct slap_control *sc;
 408
 409         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 410                 sc = LDAP_SLIST_FIRST(&controls_list);
 411                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 412
 413                 ch_free( sc->sc_oid );
 414                 if ( sc->sc_extendedopsbv != NULL ) {
 415                         ber_bvarray_free( sc->sc_extendedopsbv );
 416                 }
 417                 ch_free( sc );
 418         }
 419 }
 420
 421 /*
 422  * Format the supportedControl attribute of the root DSE,
 423  * detailing which controls are supported by the directory
 424  * server.
 425  */
 426 int
 427 controls_root_dse_info( Entry *e )
 428 {
 429         AttributeDescription *ad_supportedControl
 430                 = slap_schema.si_ad_supportedControl;
 431         struct berval vals[2];
 432         struct slap_control *sc;
 433
 434         vals[1].bv_val = NULL;
 435         vals[1].bv_len = 0;
 436
 437         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 438                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 439
 440                 vals[0].bv_val = sc->sc_oid;
 441                 vals[0].bv_len = strlen( sc->sc_oid );
 442
 443                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 444                         return -1;
 445                 }
 446         }
 447
 448         return 0;
 449 }
 450
 451 /*
 452  * Return a list of OIDs and operation masks for supported
 453  * controls. Used by SLAPI.
 454  */
 455 int
 456 get_supported_controls(char ***ctrloidsp,
 457         slap_mask_t **ctrlmasks)
 458 {
 459         int n;
 460         char **oids;
 461         slap_mask_t *masks;
 462         struct slap_control *sc;
 463
 464         n = 0;
 465
 466         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 467                 n++;
 468         }
 469
 470         if ( n == 0 ) {
 471                 *ctrloidsp = NULL;
 472                 *ctrlmasks = NULL;
 473                 return LDAP_SUCCESS;
 474         }
 475
 476         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 477         if ( oids == NULL ) {
 478                 return LDAP_NO_MEMORY;
 479         }
 480         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 481         if  ( masks == NULL ) {
 482                 SLAP_FREE( oids );
 483                 return LDAP_NO_MEMORY;
 484         }
 485
 486         n = 0;
 487
 488         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 489                 oids[n] = ch_strdup( sc->sc_oid );
 490                 masks[n] = sc->sc_mask;
 491                 n++;
 492         }
 493         oids[n] = NULL;
 494         masks[n] = 0;
 495
 496         *ctrloidsp = oids;
 497         *ctrlmasks = masks;
 498
 499         return LDAP_SUCCESS;
 500 }
 501
 502 /*
 503  * Find a control given its OID.
 504  */
 505 static struct slap_control *
 506 find_ctrl( const char *oid )
 507 {
 508         struct slap_control *sc;
 509
 510         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 511                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 512                         return sc;
 513                 }
 514         }
 515
 516         return NULL;
 517 }
 518
 519 int
 520 slap_find_control_id(
 521         const char *oid,
 522         int *cid )
 523 {
 524         struct slap_control *ctrl = find_ctrl( oid );
 525         if ( ctrl ) {
 526                 if ( cid ) *cid = ctrl->sc_cid;
 527                 return LDAP_SUCCESS;
 528         }
 529         return LDAP_CONTROL_NOT_FOUND;
 530 }
 531
 532 int
 533 slap_global_control( Operation *op, const char *oid, int *cid )
 534 {
 535         struct slap_control *ctrl = find_ctrl( oid );
 536
 537         if ( ctrl == NULL ) {
 538                 /* should not be reachable */
 539                 Debug( LDAP_DEBUG_ANY,
 540                         "slap_global_control: unrecognized control: %s\n",
 541                         oid, 0, 0 );
 542                 return LDAP_CONTROL_NOT_FOUND;
 543         }
 544
 545         if ( cid ) *cid = ctrl->sc_cid;
 546
 547         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 548                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 549                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 550         {
 551                 return LDAP_COMPARE_TRUE;
 552         }
 553
 554 #if 0
 555         Debug( LDAP_DEBUG_TRACE,
 556                 "slap_global_control: unavailable control: %s\n",
 557                 oid, 0, 0 );
 558 #endif
 559
 560         return LDAP_COMPARE_FALSE;
 561 }
 562
 563 void slap_free_ctrls(
 564         Operation *op,
 565         LDAPControl **ctrls )
 566 {
 567         int i;
 568
 569         if( ctrls == op->o_ctrls ) {
 570                 if( op->o_assertion != NULL ) {
 571                         filter_free_x( op, op->o_assertion, 1 );
 572                         op->o_assertion = NULL;
 573                 }
 574                 if( op->o_vrFilter != NULL) {
 575                         vrFilter_free( op, op->o_vrFilter );
 576                         op->o_vrFilter = NULL;
 577                 }
 578                 if( op->o_preread_attrs != NULL ) {
 579                         op->o_tmpfree( op->o_preread_attrs, op->o_tmpmemctx );
 580                         op->o_preread_attrs = NULL;
 581                 }
 582                 if( op->o_postread_attrs != NULL ) {
 583                         op->o_tmpfree( op->o_postread_attrs, op->o_tmpmemctx );
 584                         op->o_postread_attrs = NULL;
 585                 }
 586                 if( op->o_pagedresults_state != NULL ) {
 587                         op->o_tmpfree( op->o_pagedresults_state, op->o_tmpmemctx );
 588                         op->o_pagedresults_state = NULL;
 589                 }
 590         }
 591
 592         for (i=0; ctrls[i]; i++) {
 593                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 594         }
 595         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 596 }
 597
 598 int slap_add_ctrls(
 599         Operation *op,
 600         SlapReply *rs,
 601         LDAPControl **ctrls )
 602 {
 603         int i = 0, j;
 604         LDAPControl **ctrlsp;
 605
 606         if ( rs->sr_ctrls ) {
 607                 for ( ; rs->sr_ctrls[ i ]; i++ ) ;
 608         }
 609
 610         for ( j=0; ctrls[j]; j++ ) ;
 611
 612         ctrlsp = op->o_tmpalloc(( i+j+1 )*sizeof(LDAPControl *), op->o_tmpmemctx );
 613         i = 0;
 614         if ( rs->sr_ctrls ) {
 615                 for ( ; rs->sr_ctrls[i]; i++ )
 616                         ctrlsp[i] = rs->sr_ctrls[i];
 617         }
 618         for ( j=0; ctrls[j]; j++)
 619                 ctrlsp[i++] = ctrls[j];
 620         ctrlsp[i] = NULL;
 621
 622         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED )
 623                 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
 624         rs->sr_ctrls = ctrlsp;
 625         rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
 626         return i;
 627 }
 628
 629 int slap_parse_ctrl(
 630         Operation *op,
 631         SlapReply *rs,
 632         LDAPControl *control,
 633         const char **text )
 634 {
 635         struct slap_control *sc;
 636         int rc = LDAP_SUCCESS;
 637
 638         sc = find_ctrl( control->ldctl_oid );
 639         if( sc != NULL ) {
 640                 /* recognized control */
 641                 slap_mask_t tagmask;
 642                 switch( op->o_tag ) {
 643                 case LDAP_REQ_ADD:
 644                         tagmask = SLAP_CTRL_ADD;
 645                         break;
 646                 case LDAP_REQ_BIND:
 647                         tagmask = SLAP_CTRL_BIND;
 648                         break;
 649                 case LDAP_REQ_COMPARE:
 650                         tagmask = SLAP_CTRL_COMPARE;
 651                         break;
 652                 case LDAP_REQ_DELETE:
 653                         tagmask = SLAP_CTRL_DELETE;
 654                         break;
 655                 case LDAP_REQ_MODIFY:
 656                         tagmask = SLAP_CTRL_MODIFY;
 657                         break;
 658                 case LDAP_REQ_RENAME:
 659                         tagmask = SLAP_CTRL_RENAME;
 660                         break;
 661                 case LDAP_REQ_SEARCH:
 662                         tagmask = SLAP_CTRL_SEARCH;
 663                         break;
 664                 case LDAP_REQ_UNBIND:
 665                         tagmask = SLAP_CTRL_UNBIND;
 666                         break;
 667                 case LDAP_REQ_ABANDON:
 668                         tagmask = SLAP_CTRL_ABANDON;
 669                         break;
 670                 case LDAP_REQ_EXTENDED:
 671                         tagmask=~0L;
 672                         assert( op->ore_reqoid.bv_val != NULL );
 673                         if( sc->sc_extendedopsbv != NULL ) {
 674                                 int i;
 675                                 for( i=0; !BER_BVISNULL( &sc->sc_extendedopsbv[i] ); i++ ) {
 676                                         if( bvmatch( &op->ore_reqoid,
 677                                                 &sc->sc_extendedopsbv[i] ) )
 678                                         {
 679                                                 tagmask=0L;
 680                                                 break;
 681                                         }
 682                                 }
 683                         }
 684                         break;
 685                 default:
 686                         *text = "controls internal error";
 687                         return LDAP_OTHER;
 688                 }
 689
 690                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 691                         /* available extension */
 692                         if ( sc->sc_parse ) {
 693                                 rc = sc->sc_parse( op, rs, control );
 694                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 695
 696                         } else if ( control->ldctl_iscritical ) {
 697                                 *text = "not yet implemented";
 698                                 rc = LDAP_OTHER;
 699                         }
 700
 701
 702                 } else if ( control->ldctl_iscritical ) {
 703                         /* unavailable CRITICAL control */
 704                         *text = "critical extension is unavailable";
 705                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 706                 }
 707
 708         } else if ( control->ldctl_iscritical ) {
 709                 /* unrecognized CRITICAL control */
 710                 *text = "critical extension is not recognized";
 711                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 712         }
 713
 714         return rc;
 715 }
 716
 717 int
 718 get_ctrls(
 719         Operation *op,
 720         SlapReply *rs,
 721         int sendres )
 722 {
 723         return get_ctrls2( op, rs, sendres, LDAP_TAG_CONTROLS );
 724 }
 725
 726 int
 727 get_ctrls2(
 728         Operation *op,
 729         SlapReply *rs,
 730         int sendres,
 731         ber_tag_t ctag )
 732 {
 733         int nctrls = 0;
 734         ber_tag_t tag;
 735         ber_len_t len;
 736         char *opaque;
 737         BerElement *ber = op->o_ber;
 738         struct berval bv;
 739 #ifdef SLAP_CONTROL_X_WHATFAILED
 740         /* NOTE: right now, slapd checks the validity of each control
 741          * while parsing.  As a consequence, it can only detect one
 742          * cause of failure at a time.  This results in returning
 743          * exactly one OID with the whatFailed control, or no control
 744          * at all.
 745          */
 746         char *failed_oid = NULL;
 747 #endif
 748
 749         len = ber_pvt_ber_remaining(ber);
 750
 751         if( len == 0) {
 752                 /* no controls */
 753                 rs->sr_err = LDAP_SUCCESS;
 754                 return rs->sr_err;
 755         }
 756
 757         if(( tag = ber_peek_tag( ber, &len )) != ctag ) {
 758                 if( tag == LBER_ERROR ) {
 759                         rs->sr_err = SLAPD_DISCONNECT;
 760                         rs->sr_text = "unexpected data in PDU";
 761                 }
 762
 763                 goto return_results;
 764         }
 765
 766         Debug( LDAP_DEBUG_TRACE,
 767                 "=> get_ctrls\n", 0, 0, 0 );
 768
 769         if( op->o_protocol < LDAP_VERSION3 ) {
 770                 rs->sr_err = SLAPD_DISCONNECT;
 771                 rs->sr_text = "controls require LDAPv3";
 772                 goto return_results;
 773         }
 774
 775         /* one for first control, one for termination */
 776         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 777
 778 #if 0
 779         if( op->ctrls == NULL ) {
 780                 rs->sr_err = LDAP_NO_MEMORY;
 781                 rs->sr_text = "no memory";
 782                 goto return_results;
 783         }
 784 #endif
 785
 786         op->o_ctrls[nctrls] = NULL;
 787
 788         /* step through each element */
 789         for( tag = ber_first_element( ber, &len, &opaque );
 790                 tag != LBER_ERROR;
 791                 tag = ber_next_element( ber, &len, opaque ) )
 792         {
 793                 LDAPControl *c;
 794                 LDAPControl **tctrls;
 795
 796                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 797                 memset(c, 0, sizeof(LDAPControl));
 798
 799                 /* allocate pointer space for current controls (nctrls)
 800                  * + this control + extra NULL
 801                  */
 802                 tctrls = op->o_tmprealloc( op->o_ctrls,
 803                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 804
 805 #if 0
 806                 if( tctrls == NULL ) {
 807                         ch_free( c );
 808                         ldap_controls_free(op->o_ctrls);
 809                         op->o_ctrls = NULL;
 810
 811                         rs->sr_err = LDAP_NO_MEMORY;
 812                         rs->sr_text = "no memory";
 813                         goto return_results;
 814                 }
 815 #endif
 816                 op->o_ctrls = tctrls;
 817
 818                 op->o_ctrls[nctrls++] = c;
 819                 op->o_ctrls[nctrls] = NULL;
 820
 821                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 822                 c->ldctl_oid = bv.bv_val;
 823
 824                 if( tag == LBER_ERROR ) {
 825                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 826                                 0, 0, 0 );
 827
 828                         slap_free_ctrls( op, op->o_ctrls );
 829                         op->o_ctrls = NULL;
 830                         rs->sr_err = SLAPD_DISCONNECT;
 831                         rs->sr_text = "decoding controls error";
 832                         goto return_results;
 833
 834                 } else if( c->ldctl_oid == NULL ) {
 835                         Debug( LDAP_DEBUG_TRACE,
 836                                 "get_ctrls: conn %lu got emtpy OID.\n",
 837                                 op->o_connid, 0, 0 );
 838
 839                         slap_free_ctrls( op, op->o_ctrls );
 840                         op->o_ctrls = NULL;
 841                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 842                         rs->sr_text = "OID field is empty";
 843                         goto return_results;
 844                 }
 845
 846                 tag = ber_peek_tag( ber, &len );
 847
 848                 if( tag == LBER_BOOLEAN ) {
 849                         ber_int_t crit;
 850                         tag = ber_scanf( ber, "b", &crit );
 851
 852                         if( tag == LBER_ERROR ) {
 853                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 854                                         0, 0, 0 );
 855                                 slap_free_ctrls( op, op->o_ctrls );
 856                                 op->o_ctrls = NULL;
 857                                 rs->sr_err = SLAPD_DISCONNECT;
 858                                 rs->sr_text = "decoding controls error";
 859                                 goto return_results;
 860                         }
 861
 862                         c->ldctl_iscritical = (crit != 0);
 863                         tag = ber_peek_tag( ber, &len );
 864                 }
 865
 866                 if( tag == LBER_OCTETSTRING ) {
 867                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 868
 869                         if( tag == LBER_ERROR ) {
 870                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 871                                         "%s (%scritical): get value failed.\n",
 872                                         op->o_connid, c->ldctl_oid,
 873                                         c->ldctl_iscritical ? "" : "non" );
 874                                 slap_free_ctrls( op, op->o_ctrls );
 875                                 op->o_ctrls = NULL;
 876                                 rs->sr_err = SLAPD_DISCONNECT;
 877                                 rs->sr_text = "decoding controls error";
 878                                 goto return_results;
 879                         }
 880                 }
 881
 882                 Debug( LDAP_DEBUG_TRACE,
 883                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 884                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 885
 886                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 887                 if ( rs->sr_err != LDAP_SUCCESS ) {
 888 #ifdef SLAP_CONTROL_X_WHATFAILED
 889                         failed_oid = c->ldctl_oid;
 890 #endif
 891                         goto return_results;
 892                 }
 893         }
 894
 895 return_results:
 896         Debug( LDAP_DEBUG_TRACE,
 897                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 898                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 899
 900         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 901                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 902                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 903                         send_ldap_disconnect( op, rs );
 904                         rs->sr_err = SLAPD_DISCONNECT;
 905                 } else {
 906 #ifdef SLAP_CONTROL_X_WHATFAILED
 907                         /* might have not been parsed yet? */
 908                         if ( failed_oid != NULL ) {
 909                                 if ( !get_whatFailed( op ) ) {
 910                                         /* look it up */
 911
 912                                         /* step through each remaining element */
 913                                         for ( ; tag != LBER_ERROR; tag = ber_next_element( ber, &len, opaque ) )
 914                                         {
 915                                                 LDAPControl c = { 0 };
 916
 917                                                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 918                                                 c.ldctl_oid = bv.bv_val;
 919
 920                                                 if ( tag == LBER_ERROR ) {
 921                                                         slap_free_ctrls( op, op->o_ctrls );
 922                                                         op->o_ctrls = NULL;
 923                                                         break;
 924
 925                                                 } else if ( c.ldctl_oid == NULL ) {
 926                                                         slap_free_ctrls( op, op->o_ctrls );
 927                                                         op->o_ctrls = NULL;
 928                                                         break;
 929                                                 }
 930
 931                                                 tag = ber_peek_tag( ber, &len );
 932                                                 if ( tag == LBER_BOOLEAN ) {
 933                                                         ber_int_t crit;
 934                                                         tag = ber_scanf( ber, "b", &crit );
 935                                                         if( tag == LBER_ERROR ) {
 936                                                                 slap_free_ctrls( op, op->o_ctrls );
 937                                                                 op->o_ctrls = NULL;
 938                                                                 break;
 939                                                         }
 940
 941                                                         tag = ber_peek_tag( ber, &len );
 942                                                 }
 943
 944                                                 if ( tag == LBER_OCTETSTRING ) {
 945                                                         tag = ber_scanf( ber, "m", &c.ldctl_value );
 946
 947                                                         if( tag == LBER_ERROR ) {
 948                                                                 slap_free_ctrls( op, op->o_ctrls );
 949                                                                 op->o_ctrls = NULL;
 950                                                                 break;
 951                                                         }
 952                                                 }
 953
 954                                                 if ( strcmp( c.ldctl_oid, LDAP_CONTROL_X_WHATFAILED ) == 0 ) {
 955                                                         const char *text;
 956                                                         slap_parse_ctrl( op, rs, &c, &text );
 957                                                         break;
 958                                                 }
 959                                         }
 960                                 }
 961
 962                                 if ( get_whatFailed( op ) ) {
 963                                         char *oids[ 2 ];
 964                                         oids[ 0 ] = failed_oid;
 965                                         oids[ 1 ] = NULL;
 966                                         slap_ctrl_whatFailed_add( op, rs, oids );
 967                                 }
 968                         }
 969 #endif
 970
 971                         send_ldap_result( op, rs );
 972                 }
 973         }
 974
 975         return rs->sr_err;
 976 }
 977
 978 int
 979 slap_remove_control(
 980         Operation       *op,
 981         SlapReply       *rs,
 982         int             ctrl,
 983         BI_chk_controls fnc )
 984 {
 985         int             i, j;
 986
 987         switch ( op->o_ctrlflag[ ctrl ] ) {
 988         case SLAP_CONTROL_NONCRITICAL:
 989                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 990                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 991                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 992                         {
 993                                 j = i;
 994                         }
 995                 }
 996
 997                 if ( j == -1 ) {
 998                         rs->sr_err = LDAP_OTHER;
 999                         break;
1000                 }
1001
1002                 if ( fnc ) {
1003                         (void)fnc( op, rs );
1004                 }
1005
1006                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
1007
1008                 if ( i > 1 ) {
1009                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
1010                                 ( i - j ) * sizeof( LDAPControl * ) );
1011
1012                 } else {
1013                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
1014                         op->o_ctrls = NULL;
1015                 }
1016
1017                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
1018
1019                 Debug( LDAP_DEBUG_ANY, "%s: "
1020                         "non-critical control \"%s\" not supported; stripped.\n",
1021                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
1022                 /* fall thru */
1023
1024         case SLAP_CONTROL_IGNORED:
1025         case SLAP_CONTROL_NONE:
1026                 rs->sr_err = SLAP_CB_CONTINUE;
1027                 break;
1028
1029         case SLAP_CONTROL_CRITICAL:
1030                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
1031                 if ( fnc ) {
1032                         (void)fnc( op, rs );
1033                 }
1034                 Debug( LDAP_DEBUG_ANY, "%s: "
1035                         "critical control \"%s\" not supported.\n",
1036                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
1037                 break;
1038
1039         default:
1040                 /* handle all cases! */
1041                 assert( 0 );
1042         }
1043
1044         return rs->sr_err;
1045 }
1046
1047 static int parseDontUseCopy (
1048         Operation *op,
1049         SlapReply *rs,
1050         LDAPControl *ctrl )
1051 {
1052         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
1053                 rs->sr_text = "dontUseCopy control specified multiple times";
1054                 return LDAP_PROTOCOL_ERROR;
1055         }
1056
1057         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1058                 rs->sr_text = "dontUseCopy control value not absent";
1059                 return LDAP_PROTOCOL_ERROR;
1060         }
1061
1062         if ( ( global_disallows & SLAP_DISALLOW_DONTUSECOPY_N_CRIT )
1063                 && !ctrl->ldctl_iscritical )
1064         {
1065                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
1066                 return LDAP_PROTOCOL_ERROR;
1067         }
1068
1069         op->o_dontUseCopy = ctrl->ldctl_iscritical
1070                 ? SLAP_CONTROL_CRITICAL
1071                 : SLAP_CONTROL_NONCRITICAL;
1072
1073         return LDAP_SUCCESS;
1074 }
1075
1076 static int parseRelax (
1077         Operation *op,
1078         SlapReply *rs,
1079         LDAPControl *ctrl )
1080 {
1081         if ( op->o_relax != SLAP_CONTROL_NONE ) {
1082                 rs->sr_text = "relax control specified multiple times";
1083                 return LDAP_PROTOCOL_ERROR;
1084         }
1085
1086         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1087                 rs->sr_text = "relax control value not absent";
1088                 return LDAP_PROTOCOL_ERROR;
1089         }
1090
1091         op->o_relax = ctrl->ldctl_iscritical
1092                 ? SLAP_CONTROL_CRITICAL
1093                 : SLAP_CONTROL_NONCRITICAL;
1094
1095         return LDAP_SUCCESS;
1096 }
1097
1098 static int parseManageDSAit (
1099         Operation *op,
1100         SlapReply *rs,
1101         LDAPControl *ctrl )
1102 {
1103         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
1104                 rs->sr_text = "manageDSAit control specified multiple times";
1105                 return LDAP_PROTOCOL_ERROR;
1106         }
1107
1108         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1109                 rs->sr_text = "manageDSAit control value not absent";
1110                 return LDAP_PROTOCOL_ERROR;
1111         }
1112
1113         op->o_managedsait = ctrl->ldctl_iscritical
1114                 ? SLAP_CONTROL_CRITICAL
1115                 : SLAP_CONTROL_NONCRITICAL;
1116
1117         return LDAP_SUCCESS;
1118 }
1119
1120 static int parseProxyAuthz (
1121         Operation *op,
1122         SlapReply *rs,
1123         LDAPControl *ctrl )
1124 {
1125         int             rc;
1126         struct berval   dn = BER_BVNULL;
1127
1128         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
1129                 rs->sr_text = "proxy authorization control specified multiple times";
1130                 return LDAP_PROTOCOL_ERROR;
1131         }
1132
1133         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1134                 rs->sr_text = "proxy authorization control value absent";
1135                 return LDAP_PROTOCOL_ERROR;
1136         }
1137
1138         if ( ( global_disallows & SLAP_DISALLOW_PROXY_AUTHZ_N_CRIT )
1139                 && !ctrl->ldctl_iscritical )
1140         {
1141                 rs->sr_text = "proxied authorization criticality of FALSE not allowed";
1142                 return LDAP_PROTOCOL_ERROR;
1143         }
1144
1145         if ( !( global_allows & SLAP_ALLOW_PROXY_AUTHZ_ANON )
1146                 && BER_BVISEMPTY( &op->o_ndn ) )
1147         {
1148                 rs->sr_text = "anonymous proxied authorization not allowed";
1149                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1150         }
1151
1152         op->o_proxy_authz = ctrl->ldctl_iscritical
1153                 ? SLAP_CONTROL_CRITICAL
1154                 : SLAP_CONTROL_NONCRITICAL;
1155
1156         Debug( LDAP_DEBUG_ARGS,
1157                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
1158                 op->o_connid,
1159                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
1160                 0 );
1161
1162         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1163                 Debug( LDAP_DEBUG_TRACE,
1164                         "parseProxyAuthz: conn=%lu anonymous\n",
1165                         op->o_connid, 0, 0 );
1166
1167                 /* anonymous */
1168                 if ( !BER_BVISNULL( &op->o_ndn ) ) {
1169                         op->o_ndn.bv_val[ 0 ] = '\0';
1170                 }
1171                 op->o_ndn.bv_len = 0;
1172
1173                 if ( !BER_BVISNULL( &op->o_dn ) ) {
1174                         op->o_dn.bv_val[ 0 ] = '\0';
1175                 }
1176                 op->o_dn.bv_len = 0;
1177
1178                 return LDAP_SUCCESS;
1179         }
1180
1181         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
1182                         NULL, &dn, SLAP_GETDN_AUTHZID );
1183
1184         /* FIXME: empty DN in proxyAuthz control should be legal... */
1185         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
1186                 if ( dn.bv_val ) {
1187                         ch_free( dn.bv_val );
1188                 }
1189                 rs->sr_text = "authzId mapping failed";
1190                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1191         }
1192
1193         Debug( LDAP_DEBUG_TRACE,
1194                 "parseProxyAuthz: conn=%lu \"%s\"\n",
1195                 op->o_connid,
1196                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
1197
1198         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
1199
1200         if ( rc ) {
1201                 ch_free( dn.bv_val );
1202                 rs->sr_text = "not authorized to assume identity";
1203                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1204         }
1205
1206         ch_free( op->o_ndn.bv_val );
1207
1208         /*
1209          * NOTE: since slap_sasl_getdn() returns a normalized dn,
1210          * from now on op->o_dn is normalized
1211          */
1212         op->o_ndn = dn;
1213         ber_bvreplace( &op->o_dn, &dn );
1214
1215         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
1216             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
1217
1218         return LDAP_SUCCESS;
1219 }
1220
1221 static int parseNoOp (
1222         Operation *op,
1223         SlapReply *rs,
1224         LDAPControl *ctrl )
1225 {
1226         if ( op->o_noop != SLAP_CONTROL_NONE ) {
1227                 rs->sr_text = "noop control specified multiple times";
1228                 return LDAP_PROTOCOL_ERROR;
1229         }
1230
1231         if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
1232                 rs->sr_text = "noop control value not empty";
1233                 return LDAP_PROTOCOL_ERROR;
1234         }
1235
1236         op->o_noop = ctrl->ldctl_iscritical
1237                 ? SLAP_CONTROL_CRITICAL
1238                 : SLAP_CONTROL_NONCRITICAL;
1239
1240         return LDAP_SUCCESS;
1241 }
1242
1243 static int parsePagedResults (
1244         Operation *op,
1245         SlapReply *rs,
1246         LDAPControl *ctrl )
1247 {
1248         BerElementBuffer berbuf;
1249         BerElement      *ber = (BerElement *)&berbuf;
1250         struct berval   cookie;
1251         PagedResultsState       *ps;
1252         int             rc = LDAP_SUCCESS;
1253         ber_tag_t       tag;
1254         ber_int_t       size;
1255
1256         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1257                 rs->sr_text = "paged results control specified multiple times";
1258                 return LDAP_PROTOCOL_ERROR;
1259         }
1260
1261         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1262                 rs->sr_text = "paged results control value is absent";
1263                 return LDAP_PROTOCOL_ERROR;
1264         }
1265
1266         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1267                 rs->sr_text = "paged results control value is empty";
1268                 return LDAP_PROTOCOL_ERROR;
1269         }
1270
1271         /* Parse the control value
1272          *      realSearchControlValue ::= SEQUENCE {
1273          *              size    INTEGER (0..maxInt),
1274          *                              -- requested page size from client
1275          *                              -- result set size estimate from server
1276          *              cookie  OCTET STRING
1277          * }
1278          */
1279         ber_init2( ber, &ctrl->ldctl_value, LBER_USE_DER );
1280
1281         tag = ber_scanf( ber, "{im}", &size, &cookie );
1282
1283         if ( tag == LBER_ERROR ) {
1284                 rs->sr_text = "paged results control could not be decoded";
1285                 rc = LDAP_PROTOCOL_ERROR;
1286                 goto done;
1287         }
1288
1289         if ( size < 0 ) {
1290                 rs->sr_text = "paged results control size invalid";
1291                 rc = LDAP_PROTOCOL_ERROR;
1292                 goto done;
1293         }
1294
1295         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
1296         *ps = op->o_conn->c_pagedresults_state;
1297         ps->ps_size = size;
1298         ps->ps_cookieval = cookie;
1299         op->o_pagedresults_state = ps;
1300         if ( !cookie.bv_len ) {
1301                 ps->ps_count = 0;
1302                 ps->ps_cookie = 0;
1303                 /* taint ps_cookie, to detect whether it's set */
1304                 op->o_conn->c_pagedresults_state.ps_cookie = NOID;
1305         }
1306
1307         /* NOTE: according to RFC 2696 3.:
1308
1309     If the page size is greater than or equal to the sizeLimit value, the
1310     server should ignore the control as the request can be satisfied in a
1311     single page.
1312
1313          * NOTE: this assumes that the op->ors_slimit be set
1314          * before the controls are parsed.
1315          */
1316
1317         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1318                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1319
1320         } else if ( ctrl->ldctl_iscritical ) {
1321                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1322
1323         } else {
1324                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1325         }
1326
1327 done:;
1328         return rc;
1329 }
1330
1331 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
1332 static int parseSortedResults (
1333         Operation *op,
1334         SlapReply *rs,
1335         LDAPControl *ctrl )
1336 {
1337         int             rc = LDAP_SUCCESS;
1338
1339         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1340                 rs->sr_text = "sorted results control specified multiple times";
1341                 return LDAP_PROTOCOL_ERROR;
1342         }
1343
1344         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1345                 rs->sr_text = "sorted results control value is absent";
1346                 return LDAP_PROTOCOL_ERROR;
1347         }
1348
1349         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1350                 rs->sr_text = "sorted results control value is empty";
1351                 return LDAP_PROTOCOL_ERROR;
1352         }
1353
1354         /* blow off parsing the value */
1355
1356         op->o_sortedresults = ctrl->ldctl_iscritical
1357                 ? SLAP_CONTROL_CRITICAL
1358                 : SLAP_CONTROL_NONCRITICAL;
1359
1360         return rc;
1361 }
1362 #endif
1363
1364 static int parseAssert (
1365         Operation *op,
1366         SlapReply *rs,
1367         LDAPControl *ctrl )
1368 {
1369         BerElement      *ber;
1370         struct berval   fstr = BER_BVNULL;
1371
1372         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1373                 rs->sr_text = "assert control specified multiple times";
1374                 return LDAP_PROTOCOL_ERROR;
1375         }
1376
1377         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1378                 rs->sr_text = "assert control value is absent";
1379                 return LDAP_PROTOCOL_ERROR;
1380         }
1381
1382         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1383                 rs->sr_text = "assert control value is empty";
1384                 return LDAP_PROTOCOL_ERROR;
1385         }
1386
1387         ber = ber_init( &(ctrl->ldctl_value) );
1388         if (ber == NULL) {
1389                 rs->sr_text = "assert control: internal error";
1390                 return LDAP_OTHER;
1391         }
1392
1393         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1394                 &rs->sr_text);
1395         (void) ber_free( ber, 1 );
1396         if( rs->sr_err != LDAP_SUCCESS ) {
1397                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1398                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1399                         send_ldap_disconnect( op, rs );
1400                         rs->sr_err = SLAPD_DISCONNECT;
1401                 } else {
1402                         send_ldap_result( op, rs );
1403                 }
1404                 if( op->o_assertion != NULL ) {
1405                         filter_free_x( op, op->o_assertion, 1 );
1406                 }
1407                 return rs->sr_err;
1408         }
1409
1410 #ifdef LDAP_DEBUG
1411         filter2bv_x( op, op->o_assertion, &fstr );
1412
1413         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1414                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1415         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1416 #endif
1417
1418         op->o_assert = ctrl->ldctl_iscritical
1419                 ? SLAP_CONTROL_CRITICAL
1420                 : SLAP_CONTROL_NONCRITICAL;
1421
1422         rs->sr_err = LDAP_SUCCESS;
1423         return LDAP_SUCCESS;
1424 }
1425
1426 #define READMSG(post, msg) \
1427         ( post ? "postread control: " msg : "preread control: " msg )
1428
1429 static int
1430 parseReadAttrs(
1431         Operation *op,
1432         SlapReply *rs,
1433         LDAPControl *ctrl,
1434         int post )
1435 {
1436         ber_len_t       siz, off, i;
1437         BerElement      *ber;
1438         AttributeName   *an = NULL;
1439
1440         if ( ( post && op->o_postread != SLAP_CONTROL_NONE ) ||
1441                 ( !post && op->o_preread != SLAP_CONTROL_NONE ) )
1442         {
1443                 rs->sr_text = READMSG( post, "specified multiple times" );
1444                 return LDAP_PROTOCOL_ERROR;
1445         }
1446
1447         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1448                 rs->sr_text = READMSG( post, "value is absent" );
1449                 return LDAP_PROTOCOL_ERROR;
1450         }
1451
1452         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1453                 rs->sr_text = READMSG( post, "value is empty" );
1454                 return LDAP_PROTOCOL_ERROR;
1455         }
1456
1457 #ifdef LDAP_X_TXN
1458         if ( op->o_txnSpec ) { /* temporary limitation */
1459                 rs->sr_text = READMSG( post, "cannot perform in transaction" );
1460                 return LDAP_UNWILLING_TO_PERFORM;
1461         }
1462 #endif
1463
1464         ber = ber_init( &ctrl->ldctl_value );
1465         if ( ber == NULL ) {
1466                 rs->sr_text = READMSG( post, "internal error" );
1467                 return LDAP_OTHER;
1468         }
1469
1470         rs->sr_err = LDAP_SUCCESS;
1471         siz = sizeof( AttributeName );
1472         off = offsetof( AttributeName, an_name );
1473         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1474                 rs->sr_text = READMSG( post, "decoding error" );
1475                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1476                 goto done;
1477         }
1478
1479         for ( i = 0; i < siz; i++ ) {
1480                 const char      *dummy = NULL;
1481                 int             rc;
1482
1483                 an[i].an_desc = NULL;
1484                 an[i].an_oc = NULL;
1485                 an[i].an_flags = 0;
1486                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1487                 if ( rc == LDAP_SUCCESS ) {
1488                         an[i].an_name = an[i].an_desc->ad_cname;
1489
1490                 } else {
1491                         int                     j;
1492                         static struct berval    special_attrs[] = {
1493                                 BER_BVC( LDAP_NO_ATTRS ),
1494                                 BER_BVC( LDAP_ALL_USER_ATTRIBUTES ),
1495                                 BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ),
1496                                 BER_BVNULL
1497                         };
1498
1499                         /* deal with special attribute types */
1500                         for ( j = 0; !BER_BVISNULL( &special_attrs[ j ] ); j++ ) {
1501                                 if ( bvmatch( &an[i].an_name, &special_attrs[ j ] ) ) {
1502                                         an[i].an_name = special_attrs[ j ];
1503                                         break;
1504                                 }
1505                         }
1506
1507                         if ( BER_BVISNULL( &special_attrs[ j ] ) && ctrl->ldctl_iscritical ) {
1508                                 rs->sr_err = rc;
1509                                 rs->sr_text = dummy ? dummy
1510                                         : READMSG( post, "unknown attributeType" );
1511                                 goto done;
1512                         }
1513                 }
1514         }
1515
1516         if ( post ) {
1517                 op->o_postread_attrs = an;
1518                 op->o_postread = ctrl->ldctl_iscritical
1519                         ? SLAP_CONTROL_CRITICAL
1520                         : SLAP_CONTROL_NONCRITICAL;
1521         } else {
1522                 op->o_preread_attrs = an;
1523                 op->o_preread = ctrl->ldctl_iscritical
1524                         ? SLAP_CONTROL_CRITICAL
1525                         : SLAP_CONTROL_NONCRITICAL;
1526         }
1527
1528 done:
1529         (void) ber_free( ber, 1 );
1530         return rs->sr_err;
1531 }
1532
1533 static int parsePreRead (
1534         Operation *op,
1535         SlapReply *rs,
1536         LDAPControl *ctrl )
1537 {
1538         return parseReadAttrs( op, rs, ctrl, 0 );
1539 }
1540
1541 static int parsePostRead (
1542         Operation *op,
1543         SlapReply *rs,
1544         LDAPControl *ctrl )
1545 {
1546         return parseReadAttrs( op, rs, ctrl, 1 );
1547 }
1548
1549 static int parseValuesReturnFilter (
1550         Operation *op,
1551         SlapReply *rs,
1552         LDAPControl *ctrl )
1553 {
1554         BerElement      *ber;
1555         struct berval   fstr = BER_BVNULL;
1556
1557         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1558                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1559                 return LDAP_PROTOCOL_ERROR;
1560         }
1561
1562         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1563                 rs->sr_text = "valuesReturnFilter control value is absent";
1564                 return LDAP_PROTOCOL_ERROR;
1565         }
1566
1567         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1568                 rs->sr_text = "valuesReturnFilter control value is empty";
1569                 return LDAP_PROTOCOL_ERROR;
1570         }
1571
1572         ber = ber_init( &(ctrl->ldctl_value) );
1573         if (ber == NULL) {
1574                 rs->sr_text = "internal error";
1575                 return LDAP_OTHER;
1576         }
1577
1578         rs->sr_err = get_vrFilter( op, ber,
1579                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1580
1581         (void) ber_free( ber, 1 );
1582
1583         if( rs->sr_err != LDAP_SUCCESS ) {
1584                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1585                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1586                         send_ldap_disconnect( op, rs );
1587                         rs->sr_err = SLAPD_DISCONNECT;
1588                 } else {
1589                         send_ldap_result( op, rs );
1590                 }
1591                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1592         }
1593 #ifdef LDAP_DEBUG
1594         else {
1595                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1596         }
1597
1598         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1599                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1600         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1601 #endif
1602
1603         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1604                 ? SLAP_CONTROL_CRITICAL
1605                 : SLAP_CONTROL_NONCRITICAL;
1606
1607         rs->sr_err = LDAP_SUCCESS;
1608         return LDAP_SUCCESS;
1609 }
1610
1611 static int parseSubentries (
1612         Operation *op,
1613         SlapReply *rs,
1614         LDAPControl *ctrl )
1615 {
1616         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1617                 rs->sr_text = "subentries control specified multiple times";
1618                 return LDAP_PROTOCOL_ERROR;
1619         }
1620
1621         /* FIXME: should use BER library */
1622         if( ( ctrl->ldctl_value.bv_len != 3 )
1623                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1624                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1625         {
1626                 rs->sr_text = "subentries control value encoding is bogus";
1627                 return LDAP_PROTOCOL_ERROR;
1628         }
1629
1630         op->o_subentries = ctrl->ldctl_iscritical
1631                 ? SLAP_CONTROL_CRITICAL
1632                 : SLAP_CONTROL_NONCRITICAL;
1633
1634         if (ctrl->ldctl_value.bv_val[2]) {
1635                 set_subentries_visibility( op );
1636         }
1637
1638         return LDAP_SUCCESS;
1639 }
1640
1641 static int parsePermissiveModify (
1642         Operation *op,
1643         SlapReply *rs,
1644         LDAPControl *ctrl )
1645 {
1646         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1647                 rs->sr_text = "permissiveModify control specified multiple times";
1648                 return LDAP_PROTOCOL_ERROR;
1649         }
1650
1651         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1652                 rs->sr_text = "permissiveModify control value not absent";
1653                 return LDAP_PROTOCOL_ERROR;
1654         }
1655
1656         op->o_permissive_modify = ctrl->ldctl_iscritical
1657                 ? SLAP_CONTROL_CRITICAL
1658                 : SLAP_CONTROL_NONCRITICAL;
1659
1660         return LDAP_SUCCESS;
1661 }
1662
1663 static int parseDomainScope (
1664         Operation *op,
1665         SlapReply *rs,
1666         LDAPControl *ctrl )
1667 {
1668         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1669                 rs->sr_text = "domainScope control specified multiple times";
1670                 return LDAP_PROTOCOL_ERROR;
1671         }
1672
1673         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1674                 rs->sr_text = "domainScope control value not empty";
1675                 return LDAP_PROTOCOL_ERROR;
1676         }
1677
1678         op->o_domain_scope = ctrl->ldctl_iscritical
1679                 ? SLAP_CONTROL_CRITICAL
1680                 : SLAP_CONTROL_NONCRITICAL;
1681
1682         return LDAP_SUCCESS;
1683 }
1684
1685 #ifdef SLAP_CONTROL_X_TREE_DELETE
1686 static int parseTreeDelete (
1687         Operation *op,
1688         SlapReply *rs,
1689         LDAPControl *ctrl )
1690 {
1691         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1692                 rs->sr_text = "treeDelete control specified multiple times";
1693                 return LDAP_PROTOCOL_ERROR;
1694         }
1695
1696         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1697                 rs->sr_text = "treeDelete control value not absent";
1698                 return LDAP_PROTOCOL_ERROR;
1699         }
1700
1701         op->o_tree_delete = ctrl->ldctl_iscritical
1702                 ? SLAP_CONTROL_CRITICAL
1703                 : SLAP_CONTROL_NONCRITICAL;
1704
1705         return LDAP_SUCCESS;
1706 }
1707 #endif
1708
1709 static int parseSearchOptions (
1710         Operation *op,
1711         SlapReply *rs,
1712         LDAPControl *ctrl )
1713 {
1714         BerElement *ber;
1715         ber_int_t search_flags;
1716         ber_tag_t tag;
1717
1718         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1719                 rs->sr_text = "searchOptions control value is absent";
1720                 return LDAP_PROTOCOL_ERROR;
1721         }
1722
1723         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1724                 rs->sr_text = "searchOptions control value is empty";
1725                 return LDAP_PROTOCOL_ERROR;
1726         }
1727
1728         ber = ber_init( &ctrl->ldctl_value );
1729         if( ber == NULL ) {
1730                 rs->sr_text = "internal error";
1731                 return LDAP_OTHER;
1732         }
1733
1734         tag = ber_scanf( ber, "{i}", &search_flags );
1735         (void) ber_free( ber, 1 );
1736
1737         if ( tag == LBER_ERROR ) {
1738                 rs->sr_text = "searchOptions control decoding error";
1739                 return LDAP_PROTOCOL_ERROR;
1740         }
1741
1742         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1743                 /* Search flags not recognised so far,
1744                  * including:
1745                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOT
1746                  */
1747                 if ( ctrl->ldctl_iscritical ) {
1748                         rs->sr_text = "searchOptions contained unrecognized flag";
1749                         return LDAP_UNWILLING_TO_PERFORM;
1750                 }
1751
1752                 /* Ignore */
1753                 Debug( LDAP_DEBUG_TRACE,
1754                         "searchOptions: conn=%lu unrecognized flag(s) 0x%x (non-critical)\n",
1755                         op->o_connid, (unsigned)search_flags, 0 );
1756
1757                 return LDAP_SUCCESS;
1758         }
1759
1760         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1761                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1762                         rs->sr_text = "searchOptions control specified multiple times "
1763                                 "or with domainScope control";
1764                         return LDAP_PROTOCOL_ERROR;
1765                 }
1766
1767                 op->o_domain_scope = ctrl->ldctl_iscritical
1768                         ? SLAP_CONTROL_CRITICAL
1769                         : SLAP_CONTROL_NONCRITICAL;
1770         }
1771
1772         return LDAP_SUCCESS;
1773 }
1774
1775 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
1776 struct berval session_tracking_formats[] = {
1777         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_SESSION_ID ),
1778                 BER_BVC( "RADIUS-Acct-Session-Id" ),
1779         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_MULTI_SESSION_ID ),
1780                 BER_BVC( "RADIUS-Acct-Multi-Session-Id" ),
1781         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME ),
1782                 BER_BVC( "USERNAME" ),
1783
1784         BER_BVNULL
1785 };
1786
1787 static int parseSessionTracking(
1788         Operation *op,
1789         SlapReply *rs,
1790         LDAPControl *ctrl )
1791 {
1792         BerElement              *ber;
1793         ber_tag_t               tag;
1794         ber_len_t               len;
1795         int                     i, rc;
1796
1797         struct berval           sessionSourceIp = BER_BVNULL,
1798                                 sessionSourceName = BER_BVNULL,
1799                                 formatOID = BER_BVNULL,
1800                                 sessionTrackingIdentifier = BER_BVNULL;
1801
1802         size_t                  st_len, st_pos;
1803
1804         if ( ctrl->ldctl_iscritical ) {
1805                 rs->sr_text = "sessionTracking criticality is TRUE";
1806                 return LDAP_PROTOCOL_ERROR;
1807         }
1808
1809         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1810                 rs->sr_text = "sessionTracking control value is absent";
1811                 return LDAP_PROTOCOL_ERROR;
1812         }
1813
1814         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1815                 rs->sr_text = "sessionTracking control value is empty";
1816                 return LDAP_PROTOCOL_ERROR;
1817         }
1818
1819         /* TODO: add the capability to determine if a client is allowed
1820          * to use this control, based on identity, ip and so */
1821
1822         ber = ber_init( &ctrl->ldctl_value );
1823         if ( ber == NULL ) {
1824                 rs->sr_text = "internal error";
1825                 return LDAP_OTHER;
1826         }
1827
1828         tag = ber_skip_tag( ber, &len );
1829         if ( tag != LBER_SEQUENCE ) {
1830                 tag = LBER_ERROR;
1831                 goto error;
1832         }
1833
1834         /* sessionSourceIp */
1835         tag = ber_peek_tag( ber, &len );
1836         if ( tag == LBER_DEFAULT ) {
1837                 tag = LBER_ERROR;
1838                 goto error;
1839         }
1840
1841         if ( len == 0 ) {
1842                 tag = ber_skip_tag( ber, &len );
1843
1844         } else if ( len > 128 ) {
1845                 rs->sr_text = "sessionTracking.sessionSourceIp too long";
1846                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1847                 goto error;
1848
1849         } else {
1850                 tag = ber_scanf( ber, "m", &sessionSourceIp );
1851         }
1852
1853         if ( ldif_is_not_printable( sessionSourceIp.bv_val, sessionSourceIp.bv_len ) ) {
1854                 BER_BVZERO( &sessionSourceIp );
1855         }
1856
1857         /* sessionSourceName */
1858         tag = ber_peek_tag( ber, &len );
1859         if ( tag == LBER_DEFAULT ) {
1860                 tag = LBER_ERROR;
1861                 goto error;
1862         }
1863
1864         if ( len == 0 ) {
1865                 tag = ber_skip_tag( ber, &len );
1866
1867         } else if ( len > 65536 ) {
1868                 rs->sr_text = "sessionTracking.sessionSourceName too long";
1869                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1870                 goto error;
1871
1872         } else {
1873                 tag = ber_scanf( ber, "m", &sessionSourceName );
1874         }
1875
1876         if ( ldif_is_not_printable( sessionSourceName.bv_val, sessionSourceName.bv_len ) ) {
1877                 BER_BVZERO( &sessionSourceName );
1878         }
1879
1880         /* formatOID */
1881         tag = ber_peek_tag( ber, &len );
1882         if ( tag == LBER_DEFAULT ) {
1883                 tag = LBER_ERROR;
1884                 goto error;
1885         }
1886
1887         if ( len == 0 ) {
1888                 rs->sr_text = "sessionTracking.formatOID empty";
1889                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1890                 goto error;
1891
1892         } else if ( len > 1024 ) {
1893                 rs->sr_text = "sessionTracking.formatOID too long";
1894                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1895                 goto error;
1896
1897         } else {
1898                 tag = ber_scanf( ber, "m", &formatOID );
1899         }
1900
1901         rc = numericoidValidate( NULL, &formatOID );
1902         if ( rc != LDAP_SUCCESS ) {
1903                 rs->sr_text = "sessionTracking.formatOID invalid";
1904                 goto error;
1905         }
1906
1907         for ( i = 0; !BER_BVISNULL( &session_tracking_formats[ i ] ); i += 2 )
1908         {
1909                 if ( bvmatch( &formatOID, &session_tracking_formats[ i ] ) ) {
1910                         formatOID = session_tracking_formats[ i + 1 ];
1911                         break;
1912                 }
1913         }
1914
1915         /* sessionTrackingIdentifier */
1916         tag = ber_peek_tag( ber, &len );
1917         if ( tag == LBER_DEFAULT ) {
1918                 tag = LBER_ERROR;
1919                 goto error;
1920         }
1921
1922         if ( len == 0 ) {
1923                 tag = ber_skip_tag( ber, &len );
1924
1925         } else {
1926                 /* note: should not be more than 65536... */
1927                 tag = ber_scanf( ber, "m", &sessionTrackingIdentifier );
1928                 if ( ldif_is_not_printable( sessionTrackingIdentifier.bv_val, sessionTrackingIdentifier.bv_len ) ) {
1929                         /* we want the OID printed, at least */
1930                         BER_BVSTR( &sessionTrackingIdentifier, "" );
1931                 }
1932         }
1933
1934         /* closure */
1935         tag = ber_skip_tag( ber, &len );
1936         if ( tag != LBER_DEFAULT || len != 0 ) {
1937                 tag = LBER_ERROR;
1938                 goto error;
1939         }
1940         tag = 0;
1941
1942         st_len = 0;
1943         if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1944                 st_len += STRLENOF( "IP=" ) + sessionSourceIp.bv_len;
1945         }
1946         if ( !BER_BVISNULL( &sessionSourceName ) ) {
1947                 if ( st_len ) st_len++;
1948                 st_len += STRLENOF( "NAME=" ) + sessionSourceName.bv_len;
1949         }
1950         if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1951                 if ( st_len ) st_len++;
1952                 st_len += formatOID.bv_len + STRLENOF( "=" )
1953                         + sessionTrackingIdentifier.bv_len;
1954         }
1955
1956         if ( st_len == 0 ) {
1957                 goto error;
1958         }
1959
1960         st_len += STRLENOF( " []" );
1961         st_pos = strlen( op->o_log_prefix );
1962
1963         if ( sizeof( op->o_log_prefix ) - st_pos > st_len ) {
1964                 char    *ptr = &op->o_log_prefix[ st_pos ];
1965
1966                 ptr = lutil_strcopy( ptr, " [" /*]*/ );
1967
1968                 st_len = 0;
1969                 if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1970                         ptr = lutil_strcopy( ptr, "IP=" );
1971                         ptr = lutil_strcopy( ptr, sessionSourceIp.bv_val );
1972                         st_len++;
1973                 }
1974
1975                 if ( !BER_BVISNULL( &sessionSourceName ) ) {
1976                         if ( st_len ) *ptr++ = ' ';
1977                         ptr = lutil_strcopy( ptr, "NAME=" );
1978                         ptr = lutil_strcopy( ptr, sessionSourceName.bv_val );
1979                         st_len++;
1980                 }
1981
1982                 if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1983                         if ( st_len ) *ptr++ = ' ';
1984                         ptr = lutil_strcopy( ptr, formatOID.bv_val );
1985                         *ptr++ = '=';
1986                         ptr = lutil_strcopy( ptr, sessionTrackingIdentifier.bv_val );
1987                 }
1988
1989                 *ptr++ = /*[*/ ']';
1990                 *ptr = '\0';
1991         }
1992
1993 error:;
1994         (void)ber_free( ber, 1 );
1995
1996         if ( tag == LBER_ERROR ) {
1997                 rs->sr_text = "sessionTracking control decoding error";
1998                 return LDAP_PROTOCOL_ERROR;
1999         }
2000
2001
2002         return rs->sr_err;
2003 }
2004
2005 int
2006 slap_ctrl_session_tracking_add(
2007         Operation *op,
2008         SlapReply *rs,
2009         struct berval *ip,
2010         struct berval *name,
2011         struct berval *id,
2012         LDAPControl *ctrl )
2013 {
2014         BerElementBuffer berbuf;
2015         BerElement      *ber = (BerElement *)&berbuf;
2016
2017         static struct berval    oid = BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME );
2018
2019         assert( ctrl != NULL );
2020
2021         ber_init2( ber, NULL, LBER_USE_DER );
2022
2023         ber_printf( ber, "{OOOO}", ip, name, &oid, id );
2024
2025         if ( ber_flatten2( ber, &ctrl->ldctl_value, 0 ) == -1 ) {
2026                 rs->sr_err = LDAP_OTHER;
2027                 goto done;
2028         }
2029
2030         ctrl->ldctl_oid = LDAP_CONTROL_X_SESSION_TRACKING;
2031         ctrl->ldctl_iscritical = 0;
2032
2033         rs->sr_err = LDAP_SUCCESS;
2034
2035 done:;
2036         return rs->sr_err;
2037 }
2038
2039 int
2040 slap_ctrl_session_tracking_request_add( Operation *op, SlapReply *rs, LDAPControl *ctrl )
2041 {
2042         static struct berval    bv_unknown = BER_BVC( SLAP_STRING_UNKNOWN );
2043         struct berval           ip = BER_BVNULL,
2044                                 name = BER_BVNULL,
2045                                 id = BER_BVNULL;
2046
2047         if ( !BER_BVISNULL( &op->o_conn->c_peer_name ) &&
2048                 memcmp( op->o_conn->c_peer_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
2049         {
2050                 char    *ptr;
2051
2052                 ip.bv_val = op->o_conn->c_peer_name.bv_val + STRLENOF( "IP=" );
2053                 ip.bv_len = op->o_conn->c_peer_name.bv_len - STRLENOF( "IP=" );
2054
2055                 ptr = ber_bvchr( &ip, ':' );
2056                 if ( ptr ) {
2057                         ip.bv_len = ptr - ip.bv_val;
2058                 }
2059         }
2060
2061         if ( !BER_BVISNULL( &op->o_conn->c_peer_domain ) &&
2062                 !bvmatch( &op->o_conn->c_peer_domain, &bv_unknown ) )
2063         {
2064                 name = op->o_conn->c_peer_domain;
2065         }
2066
2067         if ( !BER_BVISNULL( &op->o_dn ) && !BER_BVISEMPTY( &op->o_dn ) ) {
2068                 id = op->o_dn;
2069         }
2070
2071         return slap_ctrl_session_tracking_add( op, rs, &ip, &name, &id, ctrl );
2072 }
2073 #endif
2074
2075 #ifdef SLAP_CONTROL_X_WHATFAILED
2076 static int parseWhatFailed(
2077         Operation *op,
2078         SlapReply *rs,
2079         LDAPControl *ctrl )
2080 {
2081         if ( op->o_whatFailed != SLAP_CONTROL_NONE ) {
2082                 rs->sr_text = "\"WHat Failed?\" control specified multiple times";
2083                 return LDAP_PROTOCOL_ERROR;
2084         }
2085
2086         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
2087                 rs->sr_text = "\"What Failed?\" control value not absent";
2088                 return LDAP_PROTOCOL_ERROR;
2089         }
2090
2091         op->o_whatFailed = ctrl->ldctl_iscritical
2092                 ? SLAP_CONTROL_CRITICAL
2093                 : SLAP_CONTROL_NONCRITICAL;
2094
2095         return LDAP_SUCCESS;
2096 }
2097
2098 int
2099 slap_ctrl_whatFailed_add(
2100         Operation *op,
2101         SlapReply *rs,
2102         char **oids )
2103 {
2104         BerElementBuffer berbuf;
2105         BerElement *ber = (BerElement *) &berbuf;
2106         LDAPControl **ctrls = NULL;
2107         struct berval ctrlval;
2108         int i, rc = LDAP_SUCCESS;
2109
2110         ber_init2( ber, NULL, LBER_USE_DER );
2111         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2112         ber_printf( ber, "[" /*]*/ );
2113         for ( i = 0; oids[ i ] != NULL; i++ ) {
2114                 ber_printf( ber, "s", oids[ i ] );
2115         }
2116         ber_printf( ber, /*[*/ "]" );
2117
2118         if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
2119                 rc = LDAP_OTHER;
2120                 goto done;
2121         }
2122
2123         i = 0;
2124         if ( rs->sr_ctrls != NULL ) {
2125                 for ( ; rs->sr_ctrls[ i ] != NULL; i++ ) {
2126                         if ( strcmp( rs->sr_ctrls[ i ]->ldctl_oid, LDAP_CONTROL_X_WHATFAILED ) != 0 ) {
2127                                 /* TODO: add */
2128                                 assert( 0 );
2129                         }
2130                 }
2131         }
2132
2133         ctrls = op->o_tmprealloc( rs->sr_ctrls,
2134                         sizeof(LDAPControl *)*( i + 2 )
2135                         + sizeof(LDAPControl)
2136                         + ctrlval.bv_len + 1,
2137                         op->o_tmpmemctx );
2138         if ( ctrls == NULL ) {
2139                 rc = LDAP_OTHER;
2140                 goto done;
2141         }
2142         ctrls[ i + 1 ] = NULL;
2143         ctrls[ i ] = (LDAPControl *)&ctrls[ i + 2 ];
2144         ctrls[ i ]->ldctl_oid = LDAP_CONTROL_X_WHATFAILED;
2145         ctrls[ i ]->ldctl_iscritical = 0;
2146         ctrls[ i ]->ldctl_value.bv_val = (char *)&ctrls[ i ][ 1 ];
2147         AC_MEMCPY( ctrls[ i ]->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len + 1 );
2148         ctrls[ i ]->ldctl_value.bv_len = ctrlval.bv_len;
2149
2150         ber_free_buf( ber );
2151
2152         rs->sr_ctrls = ctrls;
2153
2154 done:;
2155         return rc;
2156 }
2157 #endif