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