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 1998-2018 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 get_ctrls(
 718         Operation *op,
 719         SlapReply *rs,
 720         int sendres )
 721 {
 722         int nctrls = 0;
 723         ber_tag_t tag;
 724         ber_len_t len;
 725         char *opaque;
 726         BerElement *ber = op->o_ber;
 727         struct berval bv;
 728 #ifdef SLAP_CONTROL_X_WHATFAILED
 729         /* NOTE: right now, slapd checks the validity of each control
 730          * while parsing.  As a consequence, it can only detect one
 731          * cause of failure at a time.  This results in returning
 732          * exactly one OID with the whatFailed control, or no control
 733          * at all.
 734          */
 735         char *failed_oid = NULL;
 736 #endif
 737
 738         len = ber_pvt_ber_remaining(ber);
 739
 740         if( len == 0) {
 741                 /* no controls */
 742                 rs->sr_err = LDAP_SUCCESS;
 743                 return rs->sr_err;
 744         }
 745
 746         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 747                 if( tag == LBER_ERROR ) {
 748                         rs->sr_err = SLAPD_DISCONNECT;
 749                         rs->sr_text = "unexpected data in PDU";
 750                 }
 751
 752                 goto return_results;
 753         }
 754
 755         Debug( LDAP_DEBUG_TRACE,
 756                 "=> get_ctrls\n", 0, 0, 0 );
 757
 758         if( op->o_protocol < LDAP_VERSION3 ) {
 759                 rs->sr_err = SLAPD_DISCONNECT;
 760                 rs->sr_text = "controls require LDAPv3";
 761                 goto return_results;
 762         }
 763
 764         /* one for first control, one for termination */
 765         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 766
 767 #if 0
 768         if( op->ctrls == NULL ) {
 769                 rs->sr_err = LDAP_NO_MEMORY;
 770                 rs->sr_text = "no memory";
 771                 goto return_results;
 772         }
 773 #endif
 774
 775         op->o_ctrls[nctrls] = NULL;
 776
 777         /* step through each element */
 778         for( tag = ber_first_element( ber, &len, &opaque );
 779                 tag != LBER_ERROR;
 780                 tag = ber_next_element( ber, &len, opaque ) )
 781         {
 782                 LDAPControl *c;
 783                 LDAPControl **tctrls;
 784
 785                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 786                 memset(c, 0, sizeof(LDAPControl));
 787
 788                 /* allocate pointer space for current controls (nctrls)
 789                  * + this control + extra NULL
 790                  */
 791                 tctrls = op->o_tmprealloc( op->o_ctrls,
 792                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 793
 794 #if 0
 795                 if( tctrls == NULL ) {
 796                         ch_free( c );
 797                         ldap_controls_free(op->o_ctrls);
 798                         op->o_ctrls = NULL;
 799
 800                         rs->sr_err = LDAP_NO_MEMORY;
 801                         rs->sr_text = "no memory";
 802                         goto return_results;
 803                 }
 804 #endif
 805                 op->o_ctrls = tctrls;
 806
 807                 op->o_ctrls[nctrls++] = c;
 808                 op->o_ctrls[nctrls] = NULL;
 809
 810                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 811                 c->ldctl_oid = bv.bv_val;
 812
 813                 if( tag == LBER_ERROR ) {
 814                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 815                                 0, 0, 0 );
 816
 817                         slap_free_ctrls( op, op->o_ctrls );
 818                         op->o_ctrls = NULL;
 819                         rs->sr_err = SLAPD_DISCONNECT;
 820                         rs->sr_text = "decoding controls error";
 821                         goto return_results;
 822
 823                 } else if( c->ldctl_oid == NULL ) {
 824                         Debug( LDAP_DEBUG_TRACE,
 825                                 "get_ctrls: conn %lu got empty OID.\n",
 826                                 op->o_connid, 0, 0 );
 827
 828                         slap_free_ctrls( op, op->o_ctrls );
 829                         op->o_ctrls = NULL;
 830                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 831                         rs->sr_text = "OID field is empty";
 832                         goto return_results;
 833                 }
 834
 835                 tag = ber_peek_tag( ber, &len );
 836
 837                 if( tag == LBER_BOOLEAN ) {
 838                         ber_int_t crit;
 839                         tag = ber_scanf( ber, "b", &crit );
 840
 841                         if( tag == LBER_ERROR ) {
 842                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 843                                         0, 0, 0 );
 844                                 slap_free_ctrls( op, op->o_ctrls );
 845                                 op->o_ctrls = NULL;
 846                                 rs->sr_err = SLAPD_DISCONNECT;
 847                                 rs->sr_text = "decoding controls error";
 848                                 goto return_results;
 849                         }
 850
 851                         c->ldctl_iscritical = (crit != 0);
 852                         tag = ber_peek_tag( ber, &len );
 853                 }
 854
 855                 if( tag == LBER_OCTETSTRING ) {
 856                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 857
 858                         if( tag == LBER_ERROR ) {
 859                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 860                                         "%s (%scritical): get value failed.\n",
 861                                         op->o_connid, c->ldctl_oid,
 862                                         c->ldctl_iscritical ? "" : "non" );
 863                                 slap_free_ctrls( op, op->o_ctrls );
 864                                 op->o_ctrls = NULL;
 865                                 rs->sr_err = SLAPD_DISCONNECT;
 866                                 rs->sr_text = "decoding controls error";
 867                                 goto return_results;
 868                         }
 869                 }
 870
 871                 Debug( LDAP_DEBUG_TRACE,
 872                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 873                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 874
 875                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 876                 if ( rs->sr_err != LDAP_SUCCESS ) {
 877 #ifdef SLAP_CONTROL_X_WHATFAILED
 878                         failed_oid = c->ldctl_oid;
 879 #endif
 880                         goto return_results;
 881                 }
 882         }
 883
 884 return_results:
 885         Debug( LDAP_DEBUG_TRACE,
 886                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 887                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 888
 889         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 890                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 891                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 892                         send_ldap_disconnect( op, rs );
 893                         rs->sr_err = SLAPD_DISCONNECT;
 894                 } else {
 895 #ifdef SLAP_CONTROL_X_WHATFAILED
 896                         /* might have not been parsed yet? */
 897                         if ( failed_oid != NULL ) {
 898                                 if ( !get_whatFailed( op ) ) {
 899                                         /* look it up */
 900
 901                                         /* step through each remaining element */
 902                                         for ( ; tag != LBER_ERROR; tag = ber_next_element( ber, &len, opaque ) )
 903                                         {
 904                                                 LDAPControl c = { 0 };
 905
 906                                                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 907                                                 c.ldctl_oid = bv.bv_val;
 908
 909                                                 if ( tag == LBER_ERROR ) {
 910                                                         slap_free_ctrls( op, op->o_ctrls );
 911                                                         op->o_ctrls = NULL;
 912                                                         break;
 913
 914                                                 } else if ( c.ldctl_oid == NULL ) {
 915                                                         slap_free_ctrls( op, op->o_ctrls );
 916                                                         op->o_ctrls = NULL;
 917                                                         break;
 918                                                 }
 919
 920                                                 tag = ber_peek_tag( ber, &len );
 921                                                 if ( tag == LBER_BOOLEAN ) {
 922                                                         ber_int_t crit;
 923                                                         tag = ber_scanf( ber, "b", &crit );
 924                                                         if( tag == LBER_ERROR ) {
 925                                                                 slap_free_ctrls( op, op->o_ctrls );
 926                                                                 op->o_ctrls = NULL;
 927                                                                 break;
 928                                                         }
 929
 930                                                         tag = ber_peek_tag( ber, &len );
 931                                                 }
 932
 933                                                 if ( tag == LBER_OCTETSTRING ) {
 934                                                         tag = ber_scanf( ber, "m", &c.ldctl_value );
 935
 936                                                         if( tag == LBER_ERROR ) {
 937                                                                 slap_free_ctrls( op, op->o_ctrls );
 938                                                                 op->o_ctrls = NULL;
 939                                                                 break;
 940                                                         }
 941                                                 }
 942
 943                                                 if ( strcmp( c.ldctl_oid, LDAP_CONTROL_X_WHATFAILED ) == 0 ) {
 944                                                         const char *text;
 945                                                         slap_parse_ctrl( op, rs, &c, &text );
 946                                                         break;
 947                                                 }
 948                                         }
 949                                 }
 950
 951                                 if ( get_whatFailed( op ) ) {
 952                                         char *oids[ 2 ];
 953                                         oids[ 0 ] = failed_oid;
 954                                         oids[ 1 ] = NULL;
 955                                         slap_ctrl_whatFailed_add( op, rs, oids );
 956                                 }
 957                         }
 958 #endif
 959
 960                         send_ldap_result( op, rs );
 961                 }
 962         }
 963
 964         return rs->sr_err;
 965 }
 966
 967 int
 968 slap_remove_control(
 969         Operation       *op,
 970         SlapReply       *rs,
 971         int             ctrl,
 972         BI_chk_controls fnc )
 973 {
 974         int             i, j;
 975
 976         switch ( op->o_ctrlflag[ ctrl ] ) {
 977         case SLAP_CONTROL_NONCRITICAL:
 978                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 979                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 980                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 981                         {
 982                                 j = i;
 983                         }
 984                 }
 985
 986                 if ( j == -1 ) {
 987                         rs->sr_err = LDAP_OTHER;
 988                         break;
 989                 }
 990
 991                 if ( fnc ) {
 992                         (void)fnc( op, rs );
 993                 }
 994
 995                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 996
 997                 if ( i > 1 ) {
 998                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 999                                 ( i - j ) * sizeof( LDAPControl * ) );
1000
1001                 } else {
1002                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
1003                         op->o_ctrls = NULL;
1004                 }
1005
1006                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
1007
1008                 Debug( LDAP_DEBUG_ANY, "%s: "
1009                         "non-critical control \"%s\" not supported; stripped.\n",
1010                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
1011                 /* fall thru */
1012
1013         case SLAP_CONTROL_IGNORED:
1014         case SLAP_CONTROL_NONE:
1015                 rs->sr_err = SLAP_CB_CONTINUE;
1016                 break;
1017
1018         case SLAP_CONTROL_CRITICAL:
1019                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
1020                 if ( fnc ) {
1021                         (void)fnc( op, rs );
1022                 }
1023                 Debug( LDAP_DEBUG_ANY, "%s: "
1024                         "critical control \"%s\" not supported.\n",
1025                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
1026                 break;
1027
1028         default:
1029                 /* handle all cases! */
1030                 assert( 0 );
1031         }
1032
1033         return rs->sr_err;
1034 }
1035
1036 static int parseDontUseCopy (
1037         Operation *op,
1038         SlapReply *rs,
1039         LDAPControl *ctrl )
1040 {
1041         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
1042                 rs->sr_text = "dontUseCopy control specified multiple times";
1043                 return LDAP_PROTOCOL_ERROR;
1044         }
1045
1046         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1047                 rs->sr_text = "dontUseCopy control value not absent";
1048                 return LDAP_PROTOCOL_ERROR;
1049         }
1050
1051         if ( ( global_disallows & SLAP_DISALLOW_DONTUSECOPY_N_CRIT )
1052                 && !ctrl->ldctl_iscritical )
1053         {
1054                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
1055                 return LDAP_PROTOCOL_ERROR;
1056         }
1057
1058         op->o_dontUseCopy = ctrl->ldctl_iscritical
1059                 ? SLAP_CONTROL_CRITICAL
1060                 : SLAP_CONTROL_NONCRITICAL;
1061
1062         return LDAP_SUCCESS;
1063 }
1064
1065 static int parseRelax (
1066         Operation *op,
1067         SlapReply *rs,
1068         LDAPControl *ctrl )
1069 {
1070         if ( op->o_relax != SLAP_CONTROL_NONE ) {
1071                 rs->sr_text = "relax control specified multiple times";
1072                 return LDAP_PROTOCOL_ERROR;
1073         }
1074
1075         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1076                 rs->sr_text = "relax control value not absent";
1077                 return LDAP_PROTOCOL_ERROR;
1078         }
1079
1080         op->o_relax = ctrl->ldctl_iscritical
1081                 ? SLAP_CONTROL_CRITICAL
1082                 : SLAP_CONTROL_NONCRITICAL;
1083
1084         return LDAP_SUCCESS;
1085 }
1086
1087 static int parseManageDSAit (
1088         Operation *op,
1089         SlapReply *rs,
1090         LDAPControl *ctrl )
1091 {
1092         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
1093                 rs->sr_text = "manageDSAit control specified multiple times";
1094                 return LDAP_PROTOCOL_ERROR;
1095         }
1096
1097         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1098                 rs->sr_text = "manageDSAit control value not absent";
1099                 return LDAP_PROTOCOL_ERROR;
1100         }
1101
1102         op->o_managedsait = ctrl->ldctl_iscritical
1103                 ? SLAP_CONTROL_CRITICAL
1104                 : SLAP_CONTROL_NONCRITICAL;
1105
1106         return LDAP_SUCCESS;
1107 }
1108
1109 static int parseProxyAuthz (
1110         Operation *op,
1111         SlapReply *rs,
1112         LDAPControl *ctrl )
1113 {
1114         int             rc;
1115         struct berval   dn = BER_BVNULL;
1116
1117         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
1118                 rs->sr_text = "proxy authorization control specified multiple times";
1119                 return LDAP_PROTOCOL_ERROR;
1120         }
1121
1122         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1123                 rs->sr_text = "proxy authorization control value absent";
1124                 return LDAP_PROTOCOL_ERROR;
1125         }
1126
1127         if ( ( global_disallows & SLAP_DISALLOW_PROXY_AUTHZ_N_CRIT )
1128                 && !ctrl->ldctl_iscritical )
1129         {
1130                 rs->sr_text = "proxied authorization criticality of FALSE not allowed";
1131                 return LDAP_PROTOCOL_ERROR;
1132         }
1133
1134         if ( !( global_allows & SLAP_ALLOW_PROXY_AUTHZ_ANON )
1135                 && BER_BVISEMPTY( &op->o_ndn ) )
1136         {
1137                 rs->sr_text = "anonymous proxied authorization not allowed";
1138                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1139         }
1140
1141         op->o_proxy_authz = ctrl->ldctl_iscritical
1142                 ? SLAP_CONTROL_CRITICAL
1143                 : SLAP_CONTROL_NONCRITICAL;
1144
1145         Debug( LDAP_DEBUG_ARGS,
1146                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
1147                 op->o_connid,
1148                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
1149                 0 );
1150
1151         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1152                 Debug( LDAP_DEBUG_TRACE,
1153                         "parseProxyAuthz: conn=%lu anonymous\n",
1154                         op->o_connid, 0, 0 );
1155
1156                 /* anonymous */
1157                 if ( !BER_BVISNULL( &op->o_ndn ) ) {
1158                         op->o_ndn.bv_val[ 0 ] = '\0';
1159                 }
1160                 op->o_ndn.bv_len = 0;
1161
1162                 if ( !BER_BVISNULL( &op->o_dn ) ) {
1163                         op->o_dn.bv_val[ 0 ] = '\0';
1164                 }
1165                 op->o_dn.bv_len = 0;
1166
1167                 return LDAP_SUCCESS;
1168         }
1169
1170         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
1171                         NULL, &dn, SLAP_GETDN_AUTHZID );
1172
1173         /* FIXME: empty DN in proxyAuthz control should be legal... */
1174         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
1175                 if ( dn.bv_val ) {
1176                         ch_free( dn.bv_val );
1177                 }
1178                 rs->sr_text = "authzId mapping failed";
1179                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1180         }
1181
1182         Debug( LDAP_DEBUG_TRACE,
1183                 "parseProxyAuthz: conn=%lu \"%s\"\n",
1184                 op->o_connid,
1185                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
1186
1187         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
1188
1189         if ( rc ) {
1190                 ch_free( dn.bv_val );
1191                 rs->sr_text = "not authorized to assume identity";
1192                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1193         }
1194
1195         ch_free( op->o_ndn.bv_val );
1196
1197         /*
1198          * NOTE: since slap_sasl_getdn() returns a normalized dn,
1199          * from now on op->o_dn is normalized
1200          */
1201         op->o_ndn = dn;
1202         ber_bvreplace( &op->o_dn, &dn );
1203
1204         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
1205             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
1206
1207         return LDAP_SUCCESS;
1208 }
1209
1210 static int parseNoOp (
1211         Operation *op,
1212         SlapReply *rs,
1213         LDAPControl *ctrl )
1214 {
1215         if ( op->o_noop != SLAP_CONTROL_NONE ) {
1216                 rs->sr_text = "noop control specified multiple times";
1217                 return LDAP_PROTOCOL_ERROR;
1218         }
1219
1220         if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
1221                 rs->sr_text = "noop control value not empty";
1222                 return LDAP_PROTOCOL_ERROR;
1223         }
1224
1225         op->o_noop = ctrl->ldctl_iscritical
1226                 ? SLAP_CONTROL_CRITICAL
1227                 : SLAP_CONTROL_NONCRITICAL;
1228
1229         return LDAP_SUCCESS;
1230 }
1231
1232 static int parsePagedResults (
1233         Operation *op,
1234         SlapReply *rs,
1235         LDAPControl *ctrl )
1236 {
1237         BerElementBuffer berbuf;
1238         BerElement      *ber = (BerElement *)&berbuf;
1239         struct berval   cookie;
1240         PagedResultsState       *ps;
1241         int             rc = LDAP_SUCCESS;
1242         ber_tag_t       tag;
1243         ber_int_t       size;
1244
1245         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1246                 rs->sr_text = "paged results control specified multiple times";
1247                 return LDAP_PROTOCOL_ERROR;
1248         }
1249
1250         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1251                 rs->sr_text = "paged results control value is absent";
1252                 return LDAP_PROTOCOL_ERROR;
1253         }
1254
1255         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1256                 rs->sr_text = "paged results control value is empty";
1257                 return LDAP_PROTOCOL_ERROR;
1258         }
1259
1260         /* Parse the control value
1261          *      realSearchControlValue ::= SEQUENCE {
1262          *              size    INTEGER (0..maxInt),
1263          *                              -- requested page size from client
1264          *                              -- result set size estimate from server
1265          *              cookie  OCTET STRING
1266          * }
1267          */
1268         ber_init2( ber, &ctrl->ldctl_value, LBER_USE_DER );
1269
1270         tag = ber_scanf( ber, "{im}", &size, &cookie );
1271
1272         if ( tag == LBER_ERROR ) {
1273                 rs->sr_text = "paged results control could not be decoded";
1274                 rc = LDAP_PROTOCOL_ERROR;
1275                 goto done;
1276         }
1277
1278         if ( size < 0 ) {
1279                 rs->sr_text = "paged results control size invalid";
1280                 rc = LDAP_PROTOCOL_ERROR;
1281                 goto done;
1282         }
1283
1284         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
1285         *ps = op->o_conn->c_pagedresults_state;
1286         ps->ps_size = size;
1287         ps->ps_cookieval = cookie;
1288         op->o_pagedresults_state = ps;
1289         if ( !cookie.bv_len ) {
1290                 ps->ps_count = 0;
1291                 ps->ps_cookie = 0;
1292                 /* taint ps_cookie, to detect whether it's set */
1293                 op->o_conn->c_pagedresults_state.ps_cookie = NOID;
1294         }
1295
1296         /* NOTE: according to RFC 2696 3.:
1297
1298     If the page size is greater than or equal to the sizeLimit value, the
1299     server should ignore the control as the request can be satisfied in a
1300     single page.
1301
1302          * NOTE: this assumes that the op->ors_slimit be set
1303          * before the controls are parsed.
1304          */
1305
1306         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1307                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1308
1309         } else if ( ctrl->ldctl_iscritical ) {
1310                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1311
1312         } else {
1313                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1314         }
1315
1316 done:;
1317         return rc;
1318 }
1319
1320 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
1321 static int parseSortedResults (
1322         Operation *op,
1323         SlapReply *rs,
1324         LDAPControl *ctrl )
1325 {
1326         int             rc = LDAP_SUCCESS;
1327
1328         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1329                 rs->sr_text = "sorted results control specified multiple times";
1330                 return LDAP_PROTOCOL_ERROR;
1331         }
1332
1333         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1334                 rs->sr_text = "sorted results control value is absent";
1335                 return LDAP_PROTOCOL_ERROR;
1336         }
1337
1338         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1339                 rs->sr_text = "sorted results control value is empty";
1340                 return LDAP_PROTOCOL_ERROR;
1341         }
1342
1343         /* blow off parsing the value */
1344
1345         op->o_sortedresults = ctrl->ldctl_iscritical
1346                 ? SLAP_CONTROL_CRITICAL
1347                 : SLAP_CONTROL_NONCRITICAL;
1348
1349         return rc;
1350 }
1351 #endif
1352
1353 static int parseAssert (
1354         Operation *op,
1355         SlapReply *rs,
1356         LDAPControl *ctrl )
1357 {
1358         BerElement      *ber;
1359         struct berval   fstr = BER_BVNULL;
1360
1361         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1362                 rs->sr_text = "assert control specified multiple times";
1363                 return LDAP_PROTOCOL_ERROR;
1364         }
1365
1366         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1367                 rs->sr_text = "assert control value is absent";
1368                 return LDAP_PROTOCOL_ERROR;
1369         }
1370
1371         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1372                 rs->sr_text = "assert control value is empty";
1373                 return LDAP_PROTOCOL_ERROR;
1374         }
1375
1376         ber = ber_init( &(ctrl->ldctl_value) );
1377         if (ber == NULL) {
1378                 rs->sr_text = "assert control: internal error";
1379                 return LDAP_OTHER;
1380         }
1381
1382         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1383                 &rs->sr_text);
1384         (void) ber_free( ber, 1 );
1385         if( rs->sr_err != LDAP_SUCCESS ) {
1386                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1387                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1388                         send_ldap_disconnect( op, rs );
1389                         rs->sr_err = SLAPD_DISCONNECT;
1390                 } else {
1391                         send_ldap_result( op, rs );
1392                 }
1393                 if( op->o_assertion != NULL ) {
1394                         filter_free_x( op, op->o_assertion, 1 );
1395                         op->o_assertion = NULL;
1396                 }
1397                 return rs->sr_err;
1398         }
1399
1400 #ifdef LDAP_DEBUG
1401         filter2bv_x( op, op->o_assertion, &fstr );
1402
1403         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1404                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1405         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1406 #endif
1407
1408         op->o_assert = ctrl->ldctl_iscritical
1409                 ? SLAP_CONTROL_CRITICAL
1410                 : SLAP_CONTROL_NONCRITICAL;
1411
1412         rs->sr_err = LDAP_SUCCESS;
1413         return LDAP_SUCCESS;
1414 }
1415
1416 #define READMSG(post, msg) \
1417         ( post ? "postread control: " msg : "preread control: " msg )
1418
1419 static int
1420 parseReadAttrs(
1421         Operation *op,
1422         SlapReply *rs,
1423         LDAPControl *ctrl,
1424         int post )
1425 {
1426         ber_len_t       siz, off, i;
1427         BerElement      *ber;
1428         AttributeName   *an = NULL;
1429
1430         if ( ( post && op->o_postread != SLAP_CONTROL_NONE ) ||
1431                 ( !post && op->o_preread != SLAP_CONTROL_NONE ) )
1432         {
1433                 rs->sr_text = READMSG( post, "specified multiple times" );
1434                 return LDAP_PROTOCOL_ERROR;
1435         }
1436
1437         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1438                 rs->sr_text = READMSG( post, "value is absent" );
1439                 return LDAP_PROTOCOL_ERROR;
1440         }
1441
1442         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1443                 rs->sr_text = READMSG( post, "value is empty" );
1444                 return LDAP_PROTOCOL_ERROR;
1445         }
1446
1447 #ifdef LDAP_X_TXN
1448         if ( op->o_txnSpec ) { /* temporary limitation */
1449                 rs->sr_text = READMSG( post, "cannot perform in transaction" );
1450                 return LDAP_UNWILLING_TO_PERFORM;
1451         }
1452 #endif
1453
1454         ber = ber_init( &ctrl->ldctl_value );
1455         if ( ber == NULL ) {
1456                 rs->sr_text = READMSG( post, "internal error" );
1457                 return LDAP_OTHER;
1458         }
1459
1460         rs->sr_err = LDAP_SUCCESS;
1461         siz = sizeof( AttributeName );
1462         off = offsetof( AttributeName, an_name );
1463         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1464                 rs->sr_text = READMSG( post, "decoding error" );
1465                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1466                 goto done;
1467         }
1468
1469         for ( i = 0; i < siz; i++ ) {
1470                 const char      *dummy = NULL;
1471                 int             rc;
1472
1473                 an[i].an_desc = NULL;
1474                 an[i].an_oc = NULL;
1475                 an[i].an_flags = 0;
1476                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1477                 if ( rc == LDAP_SUCCESS ) {
1478                         an[i].an_name = an[i].an_desc->ad_cname;
1479
1480                 } else {
1481                         int                     j;
1482                         static struct berval    special_attrs[] = {
1483                                 BER_BVC( LDAP_NO_ATTRS ),
1484                                 BER_BVC( LDAP_ALL_USER_ATTRIBUTES ),
1485                                 BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ),
1486                                 BER_BVNULL
1487                         };
1488
1489                         /* deal with special attribute types */
1490                         for ( j = 0; !BER_BVISNULL( &special_attrs[ j ] ); j++ ) {
1491                                 if ( bvmatch( &an[i].an_name, &special_attrs[ j ] ) ) {
1492                                         an[i].an_name = special_attrs[ j ];
1493                                         break;
1494                                 }
1495                         }
1496
1497                         if ( BER_BVISNULL( &special_attrs[ j ] ) && ctrl->ldctl_iscritical ) {
1498                                 rs->sr_err = rc;
1499                                 rs->sr_text = dummy ? dummy
1500                                         : READMSG( post, "unknown attributeType" );
1501                                 goto done;
1502                         }
1503                 }
1504         }
1505
1506         if ( post ) {
1507                 op->o_postread_attrs = an;
1508                 op->o_postread = ctrl->ldctl_iscritical
1509                         ? SLAP_CONTROL_CRITICAL
1510                         : SLAP_CONTROL_NONCRITICAL;
1511         } else {
1512                 op->o_preread_attrs = an;
1513                 op->o_preread = ctrl->ldctl_iscritical
1514                         ? SLAP_CONTROL_CRITICAL
1515                         : SLAP_CONTROL_NONCRITICAL;
1516         }
1517
1518 done:
1519         (void) ber_free( ber, 1 );
1520         return rs->sr_err;
1521 }
1522
1523 static int parsePreRead (
1524         Operation *op,
1525         SlapReply *rs,
1526         LDAPControl *ctrl )
1527 {
1528         return parseReadAttrs( op, rs, ctrl, 0 );
1529 }
1530
1531 static int parsePostRead (
1532         Operation *op,
1533         SlapReply *rs,
1534         LDAPControl *ctrl )
1535 {
1536         return parseReadAttrs( op, rs, ctrl, 1 );
1537 }
1538
1539 static int parseValuesReturnFilter (
1540         Operation *op,
1541         SlapReply *rs,
1542         LDAPControl *ctrl )
1543 {
1544         BerElement      *ber;
1545         struct berval   fstr = BER_BVNULL;
1546
1547         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1548                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1549                 return LDAP_PROTOCOL_ERROR;
1550         }
1551
1552         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1553                 rs->sr_text = "valuesReturnFilter control value is absent";
1554                 return LDAP_PROTOCOL_ERROR;
1555         }
1556
1557         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1558                 rs->sr_text = "valuesReturnFilter control value is empty";
1559                 return LDAP_PROTOCOL_ERROR;
1560         }
1561
1562         ber = ber_init( &(ctrl->ldctl_value) );
1563         if (ber == NULL) {
1564                 rs->sr_text = "internal error";
1565                 return LDAP_OTHER;
1566         }
1567
1568         rs->sr_err = get_vrFilter( op, ber,
1569                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1570
1571         (void) ber_free( ber, 1 );
1572
1573         if( rs->sr_err != LDAP_SUCCESS ) {
1574                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1575                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1576                         send_ldap_disconnect( op, rs );
1577                         rs->sr_err = SLAPD_DISCONNECT;
1578                 } else {
1579                         send_ldap_result( op, rs );
1580                 }
1581                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1582         }
1583 #ifdef LDAP_DEBUG
1584         else {
1585                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1586         }
1587
1588         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1589                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1590         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1591 #endif
1592
1593         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1594                 ? SLAP_CONTROL_CRITICAL
1595                 : SLAP_CONTROL_NONCRITICAL;
1596
1597         rs->sr_err = LDAP_SUCCESS;
1598         return LDAP_SUCCESS;
1599 }
1600
1601 static int parseSubentries (
1602         Operation *op,
1603         SlapReply *rs,
1604         LDAPControl *ctrl )
1605 {
1606         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1607                 rs->sr_text = "subentries control specified multiple times";
1608                 return LDAP_PROTOCOL_ERROR;
1609         }
1610
1611         /* FIXME: should use BER library */
1612         if( ( ctrl->ldctl_value.bv_len != 3 )
1613                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1614                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1615         {
1616                 rs->sr_text = "subentries control value encoding is bogus";
1617                 return LDAP_PROTOCOL_ERROR;
1618         }
1619
1620         op->o_subentries = ctrl->ldctl_iscritical
1621                 ? SLAP_CONTROL_CRITICAL
1622                 : SLAP_CONTROL_NONCRITICAL;
1623
1624         if (ctrl->ldctl_value.bv_val[2]) {
1625                 set_subentries_visibility( op );
1626         }
1627
1628         return LDAP_SUCCESS;
1629 }
1630
1631 static int parsePermissiveModify (
1632         Operation *op,
1633         SlapReply *rs,
1634         LDAPControl *ctrl )
1635 {
1636         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1637                 rs->sr_text = "permissiveModify control specified multiple times";
1638                 return LDAP_PROTOCOL_ERROR;
1639         }
1640
1641         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1642                 rs->sr_text = "permissiveModify control value not absent";
1643                 return LDAP_PROTOCOL_ERROR;
1644         }
1645
1646         op->o_permissive_modify = ctrl->ldctl_iscritical
1647                 ? SLAP_CONTROL_CRITICAL
1648                 : SLAP_CONTROL_NONCRITICAL;
1649
1650         return LDAP_SUCCESS;
1651 }
1652
1653 static int parseDomainScope (
1654         Operation *op,
1655         SlapReply *rs,
1656         LDAPControl *ctrl )
1657 {
1658         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1659                 rs->sr_text = "domainScope control specified multiple times";
1660                 return LDAP_PROTOCOL_ERROR;
1661         }
1662
1663         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1664                 rs->sr_text = "domainScope control value not empty";
1665                 return LDAP_PROTOCOL_ERROR;
1666         }
1667
1668         op->o_domain_scope = ctrl->ldctl_iscritical
1669                 ? SLAP_CONTROL_CRITICAL
1670                 : SLAP_CONTROL_NONCRITICAL;
1671
1672         return LDAP_SUCCESS;
1673 }
1674
1675 #ifdef SLAP_CONTROL_X_TREE_DELETE
1676 static int parseTreeDelete (
1677         Operation *op,
1678         SlapReply *rs,
1679         LDAPControl *ctrl )
1680 {
1681         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1682                 rs->sr_text = "treeDelete control specified multiple times";
1683                 return LDAP_PROTOCOL_ERROR;
1684         }
1685
1686         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1687                 rs->sr_text = "treeDelete control value not absent";
1688                 return LDAP_PROTOCOL_ERROR;
1689         }
1690
1691         op->o_tree_delete = ctrl->ldctl_iscritical
1692                 ? SLAP_CONTROL_CRITICAL
1693                 : SLAP_CONTROL_NONCRITICAL;
1694
1695         return LDAP_SUCCESS;
1696 }
1697 #endif
1698
1699 static int parseSearchOptions (
1700         Operation *op,
1701         SlapReply *rs,
1702         LDAPControl *ctrl )
1703 {
1704         BerElement *ber;
1705         ber_int_t search_flags;
1706         ber_tag_t tag;
1707
1708         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1709                 rs->sr_text = "searchOptions control value is absent";
1710                 return LDAP_PROTOCOL_ERROR;
1711         }
1712
1713         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1714                 rs->sr_text = "searchOptions control value is empty";
1715                 return LDAP_PROTOCOL_ERROR;
1716         }
1717
1718         ber = ber_init( &ctrl->ldctl_value );
1719         if( ber == NULL ) {
1720                 rs->sr_text = "internal error";
1721                 return LDAP_OTHER;
1722         }
1723
1724         tag = ber_scanf( ber, "{i}", &search_flags );
1725         (void) ber_free( ber, 1 );
1726
1727         if ( tag == LBER_ERROR ) {
1728                 rs->sr_text = "searchOptions control decoding error";
1729                 return LDAP_PROTOCOL_ERROR;
1730         }
1731
1732         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1733                 /* Search flags not recognised so far,
1734                  * including:
1735                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOT
1736                  */
1737                 if ( ctrl->ldctl_iscritical ) {
1738                         rs->sr_text = "searchOptions contained unrecognized flag";
1739                         return LDAP_UNWILLING_TO_PERFORM;
1740                 }
1741
1742                 /* Ignore */
1743                 Debug( LDAP_DEBUG_TRACE,
1744                         "searchOptions: conn=%lu unrecognized flag(s) 0x%x (non-critical)\n",
1745                         op->o_connid, (unsigned)search_flags, 0 );
1746
1747                 return LDAP_SUCCESS;
1748         }
1749
1750         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1751                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1752                         rs->sr_text = "searchOptions control specified multiple times "
1753                                 "or with domainScope control";
1754                         return LDAP_PROTOCOL_ERROR;
1755                 }
1756
1757                 op->o_domain_scope = ctrl->ldctl_iscritical
1758                         ? SLAP_CONTROL_CRITICAL
1759                         : SLAP_CONTROL_NONCRITICAL;
1760         }
1761
1762         return LDAP_SUCCESS;
1763 }
1764
1765 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
1766 struct berval session_tracking_formats[] = {
1767         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_SESSION_ID ),
1768                 BER_BVC( "RADIUS-Acct-Session-Id" ),
1769         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_MULTI_SESSION_ID ),
1770                 BER_BVC( "RADIUS-Acct-Multi-Session-Id" ),
1771         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME ),
1772                 BER_BVC( "USERNAME" ),
1773
1774         BER_BVNULL
1775 };
1776
1777 static int parseSessionTracking(
1778         Operation *op,
1779         SlapReply *rs,
1780         LDAPControl *ctrl )
1781 {
1782         BerElement              *ber;
1783         ber_tag_t               tag;
1784         ber_len_t               len;
1785         int                     i, rc;
1786
1787         struct berval           sessionSourceIp = BER_BVNULL,
1788                                 sessionSourceName = BER_BVNULL,
1789                                 formatOID = BER_BVNULL,
1790                                 sessionTrackingIdentifier = BER_BVNULL;
1791
1792         size_t                  st_len, st_pos;
1793
1794         if ( ctrl->ldctl_iscritical ) {
1795                 rs->sr_text = "sessionTracking criticality is TRUE";
1796                 return LDAP_PROTOCOL_ERROR;
1797         }
1798
1799         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1800                 rs->sr_text = "sessionTracking control value is absent";
1801                 return LDAP_PROTOCOL_ERROR;
1802         }
1803
1804         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1805                 rs->sr_text = "sessionTracking control value is empty";
1806                 return LDAP_PROTOCOL_ERROR;
1807         }
1808
1809         /* TODO: add the capability to determine if a client is allowed
1810          * to use this control, based on identity, ip and so */
1811
1812         ber = ber_init( &ctrl->ldctl_value );
1813         if ( ber == NULL ) {
1814                 rs->sr_text = "internal error";
1815                 return LDAP_OTHER;
1816         }
1817
1818         tag = ber_skip_tag( ber, &len );
1819         if ( tag != LBER_SEQUENCE ) {
1820                 tag = LBER_ERROR;
1821                 goto error;
1822         }
1823
1824         /* sessionSourceIp */
1825         tag = ber_peek_tag( ber, &len );
1826         if ( tag == LBER_DEFAULT ) {
1827                 tag = LBER_ERROR;
1828                 goto error;
1829         }
1830
1831         if ( len == 0 ) {
1832                 tag = ber_skip_tag( ber, &len );
1833
1834         } else if ( len > 128 ) {
1835                 rs->sr_text = "sessionTracking.sessionSourceIp too long";
1836                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1837                 goto error;
1838
1839         } else {
1840                 tag = ber_scanf( ber, "m", &sessionSourceIp );
1841         }
1842
1843         if ( ldif_is_not_printable( sessionSourceIp.bv_val, sessionSourceIp.bv_len ) ) {
1844                 BER_BVZERO( &sessionSourceIp );
1845         }
1846
1847         /* sessionSourceName */
1848         tag = ber_peek_tag( ber, &len );
1849         if ( tag == LBER_DEFAULT ) {
1850                 tag = LBER_ERROR;
1851                 goto error;
1852         }
1853
1854         if ( len == 0 ) {
1855                 tag = ber_skip_tag( ber, &len );
1856
1857         } else if ( len > 65536 ) {
1858                 rs->sr_text = "sessionTracking.sessionSourceName too long";
1859                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1860                 goto error;
1861
1862         } else {
1863                 tag = ber_scanf( ber, "m", &sessionSourceName );
1864         }
1865
1866         if ( ldif_is_not_printable( sessionSourceName.bv_val, sessionSourceName.bv_len ) ) {
1867                 BER_BVZERO( &sessionSourceName );
1868         }
1869
1870         /* formatOID */
1871         tag = ber_peek_tag( ber, &len );
1872         if ( tag == LBER_DEFAULT ) {
1873                 tag = LBER_ERROR;
1874                 goto error;
1875         }
1876
1877         if ( len == 0 ) {
1878                 rs->sr_text = "sessionTracking.formatOID empty";
1879                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1880                 goto error;
1881
1882         } else if ( len > 1024 ) {
1883                 rs->sr_text = "sessionTracking.formatOID too long";
1884                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1885                 goto error;
1886
1887         } else {
1888                 tag = ber_scanf( ber, "m", &formatOID );
1889         }
1890
1891         rc = numericoidValidate( NULL, &formatOID );
1892         if ( rc != LDAP_SUCCESS ) {
1893                 rs->sr_text = "sessionTracking.formatOID invalid";
1894                 goto error;
1895         }
1896
1897         for ( i = 0; !BER_BVISNULL( &session_tracking_formats[ i ] ); i += 2 )
1898         {
1899                 if ( bvmatch( &formatOID, &session_tracking_formats[ i ] ) ) {
1900                         formatOID = session_tracking_formats[ i + 1 ];
1901                         break;
1902                 }
1903         }
1904
1905         /* sessionTrackingIdentifier */
1906         tag = ber_peek_tag( ber, &len );
1907         if ( tag == LBER_DEFAULT ) {
1908                 tag = LBER_ERROR;
1909                 goto error;
1910         }
1911
1912         if ( len == 0 ) {
1913                 tag = ber_skip_tag( ber, &len );
1914
1915         } else {
1916                 /* note: should not be more than 65536... */
1917                 tag = ber_scanf( ber, "m", &sessionTrackingIdentifier );
1918                 if ( ldif_is_not_printable( sessionTrackingIdentifier.bv_val, sessionTrackingIdentifier.bv_len ) ) {
1919                         /* we want the OID printed, at least */
1920                         BER_BVSTR( &sessionTrackingIdentifier, "" );
1921                 }
1922         }
1923
1924         /* closure */
1925         tag = ber_skip_tag( ber, &len );
1926         if ( tag != LBER_DEFAULT || len != 0 ) {
1927                 tag = LBER_ERROR;
1928                 goto error;
1929         }
1930         tag = 0;
1931
1932         st_len = 0;
1933         if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1934                 st_len += STRLENOF( "IP=" ) + sessionSourceIp.bv_len;
1935         }
1936         if ( !BER_BVISNULL( &sessionSourceName ) ) {
1937                 if ( st_len ) st_len++;
1938                 st_len += STRLENOF( "NAME=" ) + sessionSourceName.bv_len;
1939         }
1940         if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1941                 if ( st_len ) st_len++;
1942                 st_len += formatOID.bv_len + STRLENOF( "=" )
1943                         + sessionTrackingIdentifier.bv_len;
1944         }
1945
1946         if ( st_len == 0 ) {
1947                 goto error;
1948         }
1949
1950         st_len += STRLENOF( " []" );
1951         st_pos = strlen( op->o_log_prefix );
1952
1953         if ( sizeof( op->o_log_prefix ) - st_pos > st_len ) {
1954                 char    *ptr = &op->o_log_prefix[ st_pos ];
1955
1956                 ptr = lutil_strcopy( ptr, " [" /*]*/ );
1957
1958                 st_len = 0;
1959                 if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1960                         ptr = lutil_strcopy( ptr, "IP=" );
1961                         ptr = lutil_strcopy( ptr, sessionSourceIp.bv_val );
1962                         st_len++;
1963                 }
1964
1965                 if ( !BER_BVISNULL( &sessionSourceName ) ) {
1966                         if ( st_len ) *ptr++ = ' ';
1967                         ptr = lutil_strcopy( ptr, "NAME=" );
1968                         ptr = lutil_strcopy( ptr, sessionSourceName.bv_val );
1969                         st_len++;
1970                 }
1971
1972                 if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1973                         if ( st_len ) *ptr++ = ' ';
1974                         ptr = lutil_strcopy( ptr, formatOID.bv_val );
1975                         *ptr++ = '=';
1976                         ptr = lutil_strcopy( ptr, sessionTrackingIdentifier.bv_val );
1977                 }
1978
1979                 *ptr++ = /*[*/ ']';
1980                 *ptr = '\0';
1981         }
1982
1983 error:;
1984         (void)ber_free( ber, 1 );
1985
1986         if ( tag == LBER_ERROR ) {
1987                 rs->sr_text = "sessionTracking control decoding error";
1988                 return LDAP_PROTOCOL_ERROR;
1989         }
1990
1991
1992         return rs->sr_err;
1993 }
1994
1995 int
1996 slap_ctrl_session_tracking_add(
1997         Operation *op,
1998         SlapReply *rs,
1999         struct berval *ip,
2000         struct berval *name,
2001         struct berval *id,
2002         LDAPControl *ctrl )
2003 {
2004         BerElementBuffer berbuf;
2005         BerElement      *ber = (BerElement *)&berbuf;
2006
2007         static struct berval    oid = BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME );
2008
2009         assert( ctrl != NULL );
2010
2011         ber_init2( ber, NULL, LBER_USE_DER );
2012
2013         ber_printf( ber, "{OOOO}", ip, name, &oid, id );
2014
2015         if ( ber_flatten2( ber, &ctrl->ldctl_value, 0 ) == -1 ) {
2016                 rs->sr_err = LDAP_OTHER;
2017                 goto done;
2018         }
2019
2020         ctrl->ldctl_oid = LDAP_CONTROL_X_SESSION_TRACKING;
2021         ctrl->ldctl_iscritical = 0;
2022
2023         rs->sr_err = LDAP_SUCCESS;
2024
2025 done:;
2026         return rs->sr_err;
2027 }
2028
2029 int
2030 slap_ctrl_session_tracking_request_add( Operation *op, SlapReply *rs, LDAPControl *ctrl )
2031 {
2032         static struct berval    bv_unknown = BER_BVC( SLAP_STRING_UNKNOWN );
2033         struct berval           ip = BER_BVNULL,
2034                                 name = BER_BVNULL,
2035                                 id = BER_BVNULL;
2036
2037         if ( !BER_BVISNULL( &op->o_conn->c_peer_name ) &&
2038                 memcmp( op->o_conn->c_peer_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
2039         {
2040                 char    *ptr;
2041
2042                 ip.bv_val = op->o_conn->c_peer_name.bv_val + STRLENOF( "IP=" );
2043                 ip.bv_len = op->o_conn->c_peer_name.bv_len - STRLENOF( "IP=" );
2044
2045                 ptr = ber_bvchr( &ip, ':' );
2046                 if ( ptr ) {
2047                         ip.bv_len = ptr - ip.bv_val;
2048                 }
2049         }
2050
2051         if ( !BER_BVISNULL( &op->o_conn->c_peer_domain ) &&
2052                 !bvmatch( &op->o_conn->c_peer_domain, &bv_unknown ) )
2053         {
2054                 name = op->o_conn->c_peer_domain;
2055         }
2056
2057         if ( !BER_BVISNULL( &op->o_dn ) && !BER_BVISEMPTY( &op->o_dn ) ) {
2058                 id = op->o_dn;
2059         }
2060
2061         return slap_ctrl_session_tracking_add( op, rs, &ip, &name, &id, ctrl );
2062 }
2063 #endif
2064
2065 #ifdef SLAP_CONTROL_X_WHATFAILED
2066 static int parseWhatFailed(
2067         Operation *op,
2068         SlapReply *rs,
2069         LDAPControl *ctrl )
2070 {
2071         if ( op->o_whatFailed != SLAP_CONTROL_NONE ) {
2072                 rs->sr_text = "\"WHat Failed?\" control specified multiple times";
2073                 return LDAP_PROTOCOL_ERROR;
2074         }
2075
2076         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
2077                 rs->sr_text = "\"What Failed?\" control value not absent";
2078                 return LDAP_PROTOCOL_ERROR;
2079         }
2080
2081         op->o_whatFailed = ctrl->ldctl_iscritical
2082                 ? SLAP_CONTROL_CRITICAL
2083                 : SLAP_CONTROL_NONCRITICAL;
2084
2085         return LDAP_SUCCESS;
2086 }
2087
2088 int
2089 slap_ctrl_whatFailed_add(
2090         Operation *op,
2091         SlapReply *rs,
2092         char **oids )
2093 {
2094         BerElementBuffer berbuf;
2095         BerElement *ber = (BerElement *) &berbuf;
2096         LDAPControl **ctrls = NULL;
2097         struct berval ctrlval;
2098         int i, rc = LDAP_SUCCESS;
2099
2100         ber_init2( ber, NULL, LBER_USE_DER );
2101         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2102         ber_printf( ber, "[" /*]*/ );
2103         for ( i = 0; oids[ i ] != NULL; i++ ) {
2104                 ber_printf( ber, "s", oids[ i ] );
2105         }
2106         ber_printf( ber, /*[*/ "]" );
2107
2108         if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
2109                 rc = LDAP_OTHER;
2110                 goto done;
2111         }
2112
2113         i = 0;
2114         if ( rs->sr_ctrls != NULL ) {
2115                 for ( ; rs->sr_ctrls[ i ] != NULL; i++ ) {
2116                         if ( strcmp( rs->sr_ctrls[ i ]->ldctl_oid, LDAP_CONTROL_X_WHATFAILED ) != 0 ) {
2117                                 /* TODO: add */
2118                                 assert( 0 );
2119                         }
2120                 }
2121         }
2122
2123         ctrls = op->o_tmprealloc( rs->sr_ctrls,
2124                         sizeof(LDAPControl *)*( i + 2 )
2125                         + sizeof(LDAPControl)
2126                         + ctrlval.bv_len + 1,
2127                         op->o_tmpmemctx );
2128         if ( ctrls == NULL ) {
2129                 rc = LDAP_OTHER;
2130                 goto done;
2131         }
2132         ctrls[ i + 1 ] = NULL;
2133         ctrls[ i ] = (LDAPControl *)&ctrls[ i + 2 ];
2134         ctrls[ i ]->ldctl_oid = LDAP_CONTROL_X_WHATFAILED;
2135         ctrls[ i ]->ldctl_iscritical = 0;
2136         ctrls[ i ]->ldctl_value.bv_val = (char *)&ctrls[ i ][ 1 ];
2137         AC_MEMCPY( ctrls[ i ]->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len + 1 );
2138         ctrls[ i ]->ldctl_value.bv_len = ctrlval.bv_len;
2139
2140         ber_free_buf( ber );
2141
2142         rs->sr_ctrls = ctrls;
2143
2144 done:;
2145         return rc;
2146 }
2147 #endif