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 1998-2013 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                         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         for (i=0; ctrls[i]; i++) {
 569                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 570         }
 571         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 572 }
 573
 574 int slap_add_ctrls(
 575         Operation *op,
 576         SlapReply *rs,
 577         LDAPControl **ctrls )
 578 {
 579         int i = 0, j;
 580         LDAPControl **ctrlsp;
 581
 582         if ( rs->sr_ctrls ) {
 583                 for ( ; rs->sr_ctrls[ i ]; i++ ) ;
 584         }
 585
 586         for ( j=0; ctrls[j]; j++ ) ;
 587
 588         ctrlsp = op->o_tmpalloc(( i+j+1 )*sizeof(LDAPControl *), op->o_tmpmemctx );
 589         i = 0;
 590         if ( rs->sr_ctrls ) {
 591                 for ( ; rs->sr_ctrls[i]; i++ )
 592                         ctrlsp[i] = rs->sr_ctrls[i];
 593         }
 594         for ( j=0; ctrls[j]; j++)
 595                 ctrlsp[i++] = ctrls[j];
 596         ctrlsp[i] = NULL;
 597
 598         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED )
 599                 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
 600         rs->sr_ctrls = ctrlsp;
 601         rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
 602         return i;
 603 }
 604
 605 int slap_parse_ctrl(
 606         Operation *op,
 607         SlapReply *rs,
 608         LDAPControl *control,
 609         const char **text )
 610 {
 611         struct slap_control *sc;
 612         int rc = LDAP_SUCCESS;
 613
 614         sc = find_ctrl( control->ldctl_oid );
 615         if( sc != NULL ) {
 616                 /* recognized control */
 617                 slap_mask_t tagmask;
 618                 switch( op->o_tag ) {
 619                 case LDAP_REQ_ADD:
 620                         tagmask = SLAP_CTRL_ADD;
 621                         break;
 622                 case LDAP_REQ_BIND:
 623                         tagmask = SLAP_CTRL_BIND;
 624                         break;
 625                 case LDAP_REQ_COMPARE:
 626                         tagmask = SLAP_CTRL_COMPARE;
 627                         break;
 628                 case LDAP_REQ_DELETE:
 629                         tagmask = SLAP_CTRL_DELETE;
 630                         break;
 631                 case LDAP_REQ_MODIFY:
 632                         tagmask = SLAP_CTRL_MODIFY;
 633                         break;
 634                 case LDAP_REQ_RENAME:
 635                         tagmask = SLAP_CTRL_RENAME;
 636                         break;
 637                 case LDAP_REQ_SEARCH:
 638                         tagmask = SLAP_CTRL_SEARCH;
 639                         break;
 640                 case LDAP_REQ_UNBIND:
 641                         tagmask = SLAP_CTRL_UNBIND;
 642                         break;
 643                 case LDAP_REQ_ABANDON:
 644                         tagmask = SLAP_CTRL_ABANDON;
 645                         break;
 646                 case LDAP_REQ_EXTENDED:
 647                         tagmask=~0L;
 648                         assert( op->ore_reqoid.bv_val != NULL );
 649                         if( sc->sc_extendedopsbv != NULL ) {
 650                                 int i;
 651                                 for( i=0; !BER_BVISNULL( &sc->sc_extendedopsbv[i] ); i++ ) {
 652                                         if( bvmatch( &op->ore_reqoid,
 653                                                 &sc->sc_extendedopsbv[i] ) )
 654                                         {
 655                                                 tagmask=0L;
 656                                                 break;
 657                                         }
 658                                 }
 659                         }
 660                         break;
 661                 default:
 662                         *text = "controls internal error";
 663                         return LDAP_OTHER;
 664                 }
 665
 666                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 667                         /* available extension */
 668                         if ( sc->sc_parse ) {
 669                                 rc = sc->sc_parse( op, rs, control );
 670                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 671
 672                         } else if ( control->ldctl_iscritical ) {
 673                                 *text = "not yet implemented";
 674                                 rc = LDAP_OTHER;
 675                         }
 676
 677
 678                 } else if ( control->ldctl_iscritical ) {
 679                         /* unavailable CRITICAL control */
 680                         *text = "critical extension is unavailable";
 681                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 682                 }
 683
 684         } else if ( control->ldctl_iscritical ) {
 685                 /* unrecognized CRITICAL control */
 686                 *text = "critical extension is not recognized";
 687                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 688         }
 689
 690         return rc;
 691 }
 692
 693 int
 694 get_ctrls(
 695         Operation *op,
 696         SlapReply *rs,
 697         int sendres )
 698 {
 699         return get_ctrls2( op, rs, sendres, LDAP_TAG_CONTROLS );
 700 }
 701
 702 int
 703 get_ctrls2(
 704         Operation *op,
 705         SlapReply *rs,
 706         int sendres,
 707         ber_tag_t ctag )
 708 {
 709         int nctrls = 0;
 710         ber_tag_t tag;
 711         ber_len_t len;
 712         char *opaque;
 713         BerElement *ber = op->o_ber;
 714         struct berval bv;
 715 #ifdef SLAP_CONTROL_X_WHATFAILED
 716         /* NOTE: right now, slapd checks the validity of each control
 717          * while parsing.  As a consequence, it can only detect one
 718          * cause of failure at a time.  This results in returning
 719          * exactly one OID with the whatFailed control, or no control
 720          * at all.
 721          */
 722         char *failed_oid = NULL;
 723 #endif
 724
 725         len = ber_pvt_ber_remaining(ber);
 726
 727         if( len == 0) {
 728                 /* no controls */
 729                 rs->sr_err = LDAP_SUCCESS;
 730                 return rs->sr_err;
 731         }
 732
 733         if(( tag = ber_peek_tag( ber, &len )) != ctag ) {
 734                 if( tag == LBER_ERROR ) {
 735                         rs->sr_err = SLAPD_DISCONNECT;
 736                         rs->sr_text = "unexpected data in PDU";
 737                 }
 738
 739                 goto return_results;
 740         }
 741
 742         Debug( LDAP_DEBUG_TRACE,
 743                 "=> get_ctrls\n", 0, 0, 0 );
 744
 745         if( op->o_protocol < LDAP_VERSION3 ) {
 746                 rs->sr_err = SLAPD_DISCONNECT;
 747                 rs->sr_text = "controls require LDAPv3";
 748                 goto return_results;
 749         }
 750
 751         /* one for first control, one for termination */
 752         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 753
 754 #if 0
 755         if( op->ctrls == NULL ) {
 756                 rs->sr_err = LDAP_NO_MEMORY;
 757                 rs->sr_text = "no memory";
 758                 goto return_results;
 759         }
 760 #endif
 761
 762         op->o_ctrls[nctrls] = NULL;
 763
 764         /* step through each element */
 765         for( tag = ber_first_element( ber, &len, &opaque );
 766                 tag != LBER_ERROR;
 767                 tag = ber_next_element( ber, &len, opaque ) )
 768         {
 769                 LDAPControl *c;
 770                 LDAPControl **tctrls;
 771
 772                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 773                 memset(c, 0, sizeof(LDAPControl));
 774
 775                 /* allocate pointer space for current controls (nctrls)
 776                  * + this control + extra NULL
 777                  */
 778                 tctrls = op->o_tmprealloc( op->o_ctrls,
 779                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 780
 781 #if 0
 782                 if( tctrls == NULL ) {
 783                         ch_free( c );
 784                         ldap_controls_free(op->o_ctrls);
 785                         op->o_ctrls = NULL;
 786
 787                         rs->sr_err = LDAP_NO_MEMORY;
 788                         rs->sr_text = "no memory";
 789                         goto return_results;
 790                 }
 791 #endif
 792                 op->o_ctrls = tctrls;
 793
 794                 op->o_ctrls[nctrls++] = c;
 795                 op->o_ctrls[nctrls] = NULL;
 796
 797                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 798                 c->ldctl_oid = bv.bv_val;
 799
 800                 if( tag == LBER_ERROR ) {
 801                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 802                                 0, 0, 0 );
 803
 804                         slap_free_ctrls( op, op->o_ctrls );
 805                         op->o_ctrls = NULL;
 806                         rs->sr_err = SLAPD_DISCONNECT;
 807                         rs->sr_text = "decoding controls error";
 808                         goto return_results;
 809
 810                 } else if( c->ldctl_oid == NULL ) {
 811                         Debug( LDAP_DEBUG_TRACE,
 812                                 "get_ctrls: conn %lu got emtpy OID.\n",
 813                                 op->o_connid, 0, 0 );
 814
 815                         slap_free_ctrls( op, op->o_ctrls );
 816                         op->o_ctrls = NULL;
 817                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 818                         rs->sr_text = "OID field is empty";
 819                         goto return_results;
 820                 }
 821
 822                 tag = ber_peek_tag( ber, &len );
 823
 824                 if( tag == LBER_BOOLEAN ) {
 825                         ber_int_t crit;
 826                         tag = ber_scanf( ber, "b", &crit );
 827
 828                         if( tag == LBER_ERROR ) {
 829                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 830                                         0, 0, 0 );
 831                                 slap_free_ctrls( op, op->o_ctrls );
 832                                 op->o_ctrls = NULL;
 833                                 rs->sr_err = SLAPD_DISCONNECT;
 834                                 rs->sr_text = "decoding controls error";
 835                                 goto return_results;
 836                         }
 837
 838                         c->ldctl_iscritical = (crit != 0);
 839                         tag = ber_peek_tag( ber, &len );
 840                 }
 841
 842                 if( tag == LBER_OCTETSTRING ) {
 843                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 844
 845                         if( tag == LBER_ERROR ) {
 846                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 847                                         "%s (%scritical): get value failed.\n",
 848                                         op->o_connid, c->ldctl_oid,
 849                                         c->ldctl_iscritical ? "" : "non" );
 850                                 slap_free_ctrls( op, op->o_ctrls );
 851                                 op->o_ctrls = NULL;
 852                                 rs->sr_err = SLAPD_DISCONNECT;
 853                                 rs->sr_text = "decoding controls error";
 854                                 goto return_results;
 855                         }
 856                 }
 857
 858                 Debug( LDAP_DEBUG_TRACE,
 859                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 860                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 861
 862                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 863                 if ( rs->sr_err != LDAP_SUCCESS ) {
 864 #ifdef SLAP_CONTROL_X_WHATFAILED
 865                         failed_oid = c->ldctl_oid;
 866 #endif
 867                         goto return_results;
 868                 }
 869         }
 870
 871 return_results:
 872         Debug( LDAP_DEBUG_TRACE,
 873                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 874                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 875
 876         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 877                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 878                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 879                         send_ldap_disconnect( op, rs );
 880                         rs->sr_err = SLAPD_DISCONNECT;
 881                 } else {
 882 #ifdef SLAP_CONTROL_X_WHATFAILED
 883                         /* might have not been parsed yet? */
 884                         if ( failed_oid != NULL ) {
 885                                 if ( !get_whatFailed( op ) ) {
 886                                         /* look it up */
 887
 888                                         /* step through each remaining element */
 889                                         for ( ; tag != LBER_ERROR; tag = ber_next_element( ber, &len, opaque ) )
 890                                         {
 891                                                 LDAPControl c = { 0 };
 892
 893                                                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 894                                                 c.ldctl_oid = bv.bv_val;
 895
 896                                                 if ( tag == LBER_ERROR ) {
 897                                                         slap_free_ctrls( op, op->o_ctrls );
 898                                                         op->o_ctrls = NULL;
 899                                                         break;
 900
 901                                                 } else if ( c.ldctl_oid == NULL ) {
 902                                                         slap_free_ctrls( op, op->o_ctrls );
 903                                                         op->o_ctrls = NULL;
 904                                                         break;
 905                                                 }
 906
 907                                                 tag = ber_peek_tag( ber, &len );
 908                                                 if ( tag == LBER_BOOLEAN ) {
 909                                                         ber_int_t crit;
 910                                                         tag = ber_scanf( ber, "b", &crit );
 911                                                         if( tag == LBER_ERROR ) {
 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                                                 }
 919
 920                                                 if ( tag == LBER_OCTETSTRING ) {
 921                                                         tag = ber_scanf( ber, "m", &c.ldctl_value );
 922
 923                                                         if( tag == LBER_ERROR ) {
 924                                                                 slap_free_ctrls( op, op->o_ctrls );
 925                                                                 op->o_ctrls = NULL;
 926                                                                 break;
 927                                                         }
 928                                                 }
 929
 930                                                 if ( strcmp( c.ldctl_oid, LDAP_CONTROL_X_WHATFAILED ) == 0 ) {
 931                                                         const char *text;
 932                                                         slap_parse_ctrl( op, rs, &c, &text );
 933                                                         break;
 934                                                 }
 935                                         }
 936                                 }
 937
 938                                 if ( get_whatFailed( op ) ) {
 939                                         char *oids[ 2 ];
 940                                         oids[ 0 ] = failed_oid;
 941                                         oids[ 1 ] = NULL;
 942                                         slap_ctrl_whatFailed_add( op, rs, oids );
 943                                 }
 944                         }
 945 #endif
 946
 947                         send_ldap_result( op, rs );
 948                 }
 949         }
 950
 951         return rs->sr_err;
 952 }
 953
 954 int
 955 slap_remove_control(
 956         Operation       *op,
 957         SlapReply       *rs,
 958         int             ctrl,
 959         BI_chk_controls fnc )
 960 {
 961         int             i, j;
 962
 963         switch ( op->o_ctrlflag[ ctrl ] ) {
 964         case SLAP_CONTROL_NONCRITICAL:
 965                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 966                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid,
 967                                 slap_known_controls[ ctrl - 1 ] ) == 0 )
 968                         {
 969                                 j = i;
 970                         }
 971                 }
 972
 973                 if ( j == -1 ) {
 974                         rs->sr_err = LDAP_OTHER;
 975                         break;
 976                 }
 977
 978                 if ( fnc ) {
 979                         (void)fnc( op, rs );
 980                 }
 981
 982                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 983
 984                 if ( i > 1 ) {
 985                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 986                                 ( i - j ) * sizeof( LDAPControl * ) );
 987
 988                 } else {
 989                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
 990                         op->o_ctrls = NULL;
 991                 }
 992
 993                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
 994
 995                 Debug( LDAP_DEBUG_ANY, "%s: "
 996                         "non-critical control \"%s\" not supported; stripped.\n",
 997                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 998                 /* fall thru */
 999
1000         case SLAP_CONTROL_IGNORED:
1001         case SLAP_CONTROL_NONE:
1002                 rs->sr_err = SLAP_CB_CONTINUE;
1003                 break;
1004
1005         case SLAP_CONTROL_CRITICAL:
1006                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
1007                 if ( fnc ) {
1008                         (void)fnc( op, rs );
1009                 }
1010                 Debug( LDAP_DEBUG_ANY, "%s: "
1011                         "critical control \"%s\" not supported.\n",
1012                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
1013                 break;
1014
1015         default:
1016                 /* handle all cases! */
1017                 assert( 0 );
1018         }
1019
1020         return rs->sr_err;
1021 }
1022
1023 static int parseDontUseCopy (
1024         Operation *op,
1025         SlapReply *rs,
1026         LDAPControl *ctrl )
1027 {
1028         if ( op->o_dontUseCopy != SLAP_CONTROL_NONE ) {
1029                 rs->sr_text = "dontUseCopy control specified multiple times";
1030                 return LDAP_PROTOCOL_ERROR;
1031         }
1032
1033         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1034                 rs->sr_text = "dontUseCopy control value not absent";
1035                 return LDAP_PROTOCOL_ERROR;
1036         }
1037
1038         if ( ( global_disallows & SLAP_DISALLOW_DONTUSECOPY_N_CRIT )
1039                 && !ctrl->ldctl_iscritical )
1040         {
1041                 rs->sr_text = "dontUseCopy criticality of FALSE not allowed";
1042                 return LDAP_PROTOCOL_ERROR;
1043         }
1044
1045         op->o_dontUseCopy = ctrl->ldctl_iscritical
1046                 ? SLAP_CONTROL_CRITICAL
1047                 : SLAP_CONTROL_NONCRITICAL;
1048
1049         return LDAP_SUCCESS;
1050 }
1051
1052 static int parseRelax (
1053         Operation *op,
1054         SlapReply *rs,
1055         LDAPControl *ctrl )
1056 {
1057         if ( op->o_relax != SLAP_CONTROL_NONE ) {
1058                 rs->sr_text = "relax control specified multiple times";
1059                 return LDAP_PROTOCOL_ERROR;
1060         }
1061
1062         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1063                 rs->sr_text = "relax control value not absent";
1064                 return LDAP_PROTOCOL_ERROR;
1065         }
1066
1067         op->o_relax = ctrl->ldctl_iscritical
1068                 ? SLAP_CONTROL_CRITICAL
1069                 : SLAP_CONTROL_NONCRITICAL;
1070
1071         return LDAP_SUCCESS;
1072 }
1073
1074 static int parseManageDSAit (
1075         Operation *op,
1076         SlapReply *rs,
1077         LDAPControl *ctrl )
1078 {
1079         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
1080                 rs->sr_text = "manageDSAit control specified multiple times";
1081                 return LDAP_PROTOCOL_ERROR;
1082         }
1083
1084         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1085                 rs->sr_text = "manageDSAit control value not absent";
1086                 return LDAP_PROTOCOL_ERROR;
1087         }
1088
1089         op->o_managedsait = ctrl->ldctl_iscritical
1090                 ? SLAP_CONTROL_CRITICAL
1091                 : SLAP_CONTROL_NONCRITICAL;
1092
1093         return LDAP_SUCCESS;
1094 }
1095
1096 static int parseProxyAuthz (
1097         Operation *op,
1098         SlapReply *rs,
1099         LDAPControl *ctrl )
1100 {
1101         int             rc;
1102         struct berval   dn = BER_BVNULL;
1103
1104         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
1105                 rs->sr_text = "proxy authorization control specified multiple times";
1106                 return LDAP_PROTOCOL_ERROR;
1107         }
1108
1109         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1110                 rs->sr_text = "proxy authorization control value absent";
1111                 return LDAP_PROTOCOL_ERROR;
1112         }
1113
1114         if ( ( global_disallows & SLAP_DISALLOW_PROXY_AUTHZ_N_CRIT )
1115                 && !ctrl->ldctl_iscritical )
1116         {
1117                 rs->sr_text = "proxied authorization criticality of FALSE not allowed";
1118                 return LDAP_PROTOCOL_ERROR;
1119         }
1120
1121         if ( !( global_allows & SLAP_ALLOW_PROXY_AUTHZ_ANON )
1122                 && BER_BVISEMPTY( &op->o_ndn ) )
1123         {
1124                 rs->sr_text = "anonymous proxied authorization not allowed";
1125                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1126         }
1127
1128         op->o_proxy_authz = ctrl->ldctl_iscritical
1129                 ? SLAP_CONTROL_CRITICAL
1130                 : SLAP_CONTROL_NONCRITICAL;
1131
1132         Debug( LDAP_DEBUG_ARGS,
1133                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
1134                 op->o_connid,
1135                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
1136                 0 );
1137
1138         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1139                 Debug( LDAP_DEBUG_TRACE,
1140                         "parseProxyAuthz: conn=%lu anonymous\n",
1141                         op->o_connid, 0, 0 );
1142
1143                 /* anonymous */
1144                 if ( !BER_BVISNULL( &op->o_ndn ) ) {
1145                         op->o_ndn.bv_val[ 0 ] = '\0';
1146                 }
1147                 op->o_ndn.bv_len = 0;
1148
1149                 if ( !BER_BVISNULL( &op->o_dn ) ) {
1150                         op->o_dn.bv_val[ 0 ] = '\0';
1151                 }
1152                 op->o_dn.bv_len = 0;
1153
1154                 return LDAP_SUCCESS;
1155         }
1156
1157         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
1158                         NULL, &dn, SLAP_GETDN_AUTHZID );
1159
1160         /* FIXME: empty DN in proxyAuthz control should be legal... */
1161         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
1162                 if ( dn.bv_val ) {
1163                         ch_free( dn.bv_val );
1164                 }
1165                 rs->sr_text = "authzId mapping failed";
1166                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1167         }
1168
1169         Debug( LDAP_DEBUG_TRACE,
1170                 "parseProxyAuthz: conn=%lu \"%s\"\n",
1171                 op->o_connid,
1172                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
1173
1174         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
1175
1176         if ( rc ) {
1177                 ch_free( dn.bv_val );
1178                 rs->sr_text = "not authorized to assume identity";
1179                 return LDAP_PROXIED_AUTHORIZATION_DENIED;
1180         }
1181
1182         ch_free( op->o_ndn.bv_val );
1183
1184         /*
1185          * NOTE: since slap_sasl_getdn() returns a normalized dn,
1186          * from now on op->o_dn is normalized
1187          */
1188         op->o_ndn = dn;
1189         ber_bvreplace( &op->o_dn, &dn );
1190
1191         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
1192             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
1193
1194         return LDAP_SUCCESS;
1195 }
1196
1197 static int parseNoOp (
1198         Operation *op,
1199         SlapReply *rs,
1200         LDAPControl *ctrl )
1201 {
1202         if ( op->o_noop != SLAP_CONTROL_NONE ) {
1203                 rs->sr_text = "noop control specified multiple times";
1204                 return LDAP_PROTOCOL_ERROR;
1205         }
1206
1207         if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
1208                 rs->sr_text = "noop control value not empty";
1209                 return LDAP_PROTOCOL_ERROR;
1210         }
1211
1212         op->o_noop = ctrl->ldctl_iscritical
1213                 ? SLAP_CONTROL_CRITICAL
1214                 : SLAP_CONTROL_NONCRITICAL;
1215
1216         return LDAP_SUCCESS;
1217 }
1218
1219 static int parsePagedResults (
1220         Operation *op,
1221         SlapReply *rs,
1222         LDAPControl *ctrl )
1223 {
1224         BerElementBuffer berbuf;
1225         BerElement      *ber = (BerElement *)&berbuf;
1226         struct berval   cookie;
1227         PagedResultsState       *ps;
1228         int             rc = LDAP_SUCCESS;
1229         ber_tag_t       tag;
1230         ber_int_t       size;
1231
1232         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1233                 rs->sr_text = "paged results control specified multiple times";
1234                 return LDAP_PROTOCOL_ERROR;
1235         }
1236
1237         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1238                 rs->sr_text = "paged results control value is absent";
1239                 return LDAP_PROTOCOL_ERROR;
1240         }
1241
1242         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1243                 rs->sr_text = "paged results control value is empty";
1244                 return LDAP_PROTOCOL_ERROR;
1245         }
1246
1247         /* Parse the control value
1248          *      realSearchControlValue ::= SEQUENCE {
1249          *              size    INTEGER (0..maxInt),
1250          *                              -- requested page size from client
1251          *                              -- result set size estimate from server
1252          *              cookie  OCTET STRING
1253          * }
1254          */
1255         ber_init2( ber, &ctrl->ldctl_value, LBER_USE_DER );
1256
1257         tag = ber_scanf( ber, "{im}", &size, &cookie );
1258
1259         if ( tag == LBER_ERROR ) {
1260                 rs->sr_text = "paged results control could not be decoded";
1261                 rc = LDAP_PROTOCOL_ERROR;
1262                 goto done;
1263         }
1264
1265         if ( size < 0 ) {
1266                 rs->sr_text = "paged results control size invalid";
1267                 rc = LDAP_PROTOCOL_ERROR;
1268                 goto done;
1269         }
1270
1271         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
1272         *ps = op->o_conn->c_pagedresults_state;
1273         ps->ps_size = size;
1274         ps->ps_cookieval = cookie;
1275         op->o_pagedresults_state = ps;
1276         if ( !cookie.bv_len ) {
1277                 ps->ps_count = 0;
1278                 ps->ps_cookie = 0;
1279                 /* taint ps_cookie, to detect whether it's set */
1280                 op->o_conn->c_pagedresults_state.ps_cookie = NOID;
1281         }
1282
1283         /* NOTE: according to RFC 2696 3.:
1284
1285     If the page size is greater than or equal to the sizeLimit value, the
1286     server should ignore the control as the request can be satisfied in a
1287     single page.
1288
1289          * NOTE: this assumes that the op->ors_slimit be set
1290          * before the controls are parsed.
1291          */
1292
1293         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
1294                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
1295
1296         } else if ( ctrl->ldctl_iscritical ) {
1297                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
1298
1299         } else {
1300                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
1301         }
1302
1303 done:;
1304         return rc;
1305 }
1306
1307 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
1308 static int parseSortedResults (
1309         Operation *op,
1310         SlapReply *rs,
1311         LDAPControl *ctrl )
1312 {
1313         int             rc = LDAP_SUCCESS;
1314
1315         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1316                 rs->sr_text = "sorted results control specified multiple times";
1317                 return LDAP_PROTOCOL_ERROR;
1318         }
1319
1320         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1321                 rs->sr_text = "sorted results control value is absent";
1322                 return LDAP_PROTOCOL_ERROR;
1323         }
1324
1325         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1326                 rs->sr_text = "sorted results control value is empty";
1327                 return LDAP_PROTOCOL_ERROR;
1328         }
1329
1330         /* blow off parsing the value */
1331
1332         op->o_sortedresults = ctrl->ldctl_iscritical
1333                 ? SLAP_CONTROL_CRITICAL
1334                 : SLAP_CONTROL_NONCRITICAL;
1335
1336         return rc;
1337 }
1338 #endif
1339
1340 static int parseAssert (
1341         Operation *op,
1342         SlapReply *rs,
1343         LDAPControl *ctrl )
1344 {
1345         BerElement      *ber;
1346         struct berval   fstr = BER_BVNULL;
1347
1348         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1349                 rs->sr_text = "assert control specified multiple times";
1350                 return LDAP_PROTOCOL_ERROR;
1351         }
1352
1353         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1354                 rs->sr_text = "assert control value is absent";
1355                 return LDAP_PROTOCOL_ERROR;
1356         }
1357
1358         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1359                 rs->sr_text = "assert control value is empty";
1360                 return LDAP_PROTOCOL_ERROR;
1361         }
1362
1363         ber = ber_init( &(ctrl->ldctl_value) );
1364         if (ber == NULL) {
1365                 rs->sr_text = "assert control: internal error";
1366                 return LDAP_OTHER;
1367         }
1368
1369         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion),
1370                 &rs->sr_text);
1371         (void) ber_free( ber, 1 );
1372         if( rs->sr_err != LDAP_SUCCESS ) {
1373                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1374                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1375                         send_ldap_disconnect( op, rs );
1376                         rs->sr_err = SLAPD_DISCONNECT;
1377                 } else {
1378                         send_ldap_result( op, rs );
1379                 }
1380                 if( op->o_assertion != NULL ) {
1381                         filter_free_x( op, op->o_assertion, 1 );
1382                 }
1383                 return rs->sr_err;
1384         }
1385
1386 #ifdef LDAP_DEBUG
1387         filter2bv_x( op, op->o_assertion, &fstr );
1388
1389         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1390                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1391         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1392 #endif
1393
1394         op->o_assert = ctrl->ldctl_iscritical
1395                 ? SLAP_CONTROL_CRITICAL
1396                 : SLAP_CONTROL_NONCRITICAL;
1397
1398         rs->sr_err = LDAP_SUCCESS;
1399         return LDAP_SUCCESS;
1400 }
1401
1402 #define READMSG(post, msg) \
1403         ( post ? "postread control: " msg : "preread control: " msg )
1404
1405 static int
1406 parseReadAttrs(
1407         Operation *op,
1408         SlapReply *rs,
1409         LDAPControl *ctrl,
1410         int post )
1411 {
1412         ber_len_t       siz, off, i;
1413         BerElement      *ber;
1414         AttributeName   *an = NULL;
1415
1416         if ( ( post && op->o_postread != SLAP_CONTROL_NONE ) ||
1417                 ( !post && op->o_preread != SLAP_CONTROL_NONE ) )
1418         {
1419                 rs->sr_text = READMSG( post, "specified multiple times" );
1420                 return LDAP_PROTOCOL_ERROR;
1421         }
1422
1423         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1424                 rs->sr_text = READMSG( post, "value is absent" );
1425                 return LDAP_PROTOCOL_ERROR;
1426         }
1427
1428         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1429                 rs->sr_text = READMSG( post, "value is empty" );
1430                 return LDAP_PROTOCOL_ERROR;
1431         }
1432
1433 #ifdef LDAP_X_TXN
1434         if ( op->o_txnSpec ) { /* temporary limitation */
1435                 rs->sr_text = READMSG( post, "cannot perform in transaction" );
1436                 return LDAP_UNWILLING_TO_PERFORM;
1437         }
1438 #endif
1439
1440         ber = ber_init( &ctrl->ldctl_value );
1441         if ( ber == NULL ) {
1442                 rs->sr_text = READMSG( post, "internal error" );
1443                 return LDAP_OTHER;
1444         }
1445
1446         rs->sr_err = LDAP_SUCCESS;
1447         siz = sizeof( AttributeName );
1448         off = offsetof( AttributeName, an_name );
1449         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1450                 rs->sr_text = READMSG( post, "decoding error" );
1451                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1452                 goto done;
1453         }
1454
1455         for ( i = 0; i < siz; i++ ) {
1456                 const char      *dummy = NULL;
1457                 int             rc;
1458
1459                 an[i].an_desc = NULL;
1460                 an[i].an_oc = NULL;
1461                 an[i].an_flags = 0;
1462                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1463                 if ( rc == LDAP_SUCCESS ) {
1464                         an[i].an_name = an[i].an_desc->ad_cname;
1465
1466                 } else {
1467                         int                     j;
1468                         static struct berval    special_attrs[] = {
1469                                 BER_BVC( LDAP_NO_ATTRS ),
1470                                 BER_BVC( LDAP_ALL_USER_ATTRIBUTES ),
1471                                 BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ),
1472                                 BER_BVNULL
1473                         };
1474
1475                         /* deal with special attribute types */
1476                         for ( j = 0; !BER_BVISNULL( &special_attrs[ j ] ); j++ ) {
1477                                 if ( bvmatch( &an[i].an_name, &special_attrs[ j ] ) ) {
1478                                         an[i].an_name = special_attrs[ j ];
1479                                         break;
1480                                 }
1481                         }
1482
1483                         if ( BER_BVISNULL( &special_attrs[ j ] ) && ctrl->ldctl_iscritical ) {
1484                                 rs->sr_err = rc;
1485                                 rs->sr_text = dummy ? dummy
1486                                         : READMSG( post, "unknown attributeType" );
1487                                 goto done;
1488                         }
1489                 }
1490         }
1491
1492         if ( post ) {
1493                 op->o_postread_attrs = an;
1494                 op->o_postread = ctrl->ldctl_iscritical
1495                         ? SLAP_CONTROL_CRITICAL
1496                         : SLAP_CONTROL_NONCRITICAL;
1497         } else {
1498                 op->o_preread_attrs = an;
1499                 op->o_preread = ctrl->ldctl_iscritical
1500                         ? SLAP_CONTROL_CRITICAL
1501                         : SLAP_CONTROL_NONCRITICAL;
1502         }
1503
1504 done:
1505         (void) ber_free( ber, 1 );
1506         return rs->sr_err;
1507 }
1508
1509 static int parsePreRead (
1510         Operation *op,
1511         SlapReply *rs,
1512         LDAPControl *ctrl )
1513 {
1514         return parseReadAttrs( op, rs, ctrl, 0 );
1515 }
1516
1517 static int parsePostRead (
1518         Operation *op,
1519         SlapReply *rs,
1520         LDAPControl *ctrl )
1521 {
1522         return parseReadAttrs( op, rs, ctrl, 1 );
1523 }
1524
1525 static int parseValuesReturnFilter (
1526         Operation *op,
1527         SlapReply *rs,
1528         LDAPControl *ctrl )
1529 {
1530         BerElement      *ber;
1531         struct berval   fstr = BER_BVNULL;
1532
1533         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1534                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1535                 return LDAP_PROTOCOL_ERROR;
1536         }
1537
1538         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1539                 rs->sr_text = "valuesReturnFilter control value is absent";
1540                 return LDAP_PROTOCOL_ERROR;
1541         }
1542
1543         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1544                 rs->sr_text = "valuesReturnFilter control value is empty";
1545                 return LDAP_PROTOCOL_ERROR;
1546         }
1547
1548         ber = ber_init( &(ctrl->ldctl_value) );
1549         if (ber == NULL) {
1550                 rs->sr_text = "internal error";
1551                 return LDAP_OTHER;
1552         }
1553
1554         rs->sr_err = get_vrFilter( op, ber,
1555                 (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1556
1557         (void) ber_free( ber, 1 );
1558
1559         if( rs->sr_err != LDAP_SUCCESS ) {
1560                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1561                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1562                         send_ldap_disconnect( op, rs );
1563                         rs->sr_err = SLAPD_DISCONNECT;
1564                 } else {
1565                         send_ldap_result( op, rs );
1566                 }
1567                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1568         }
1569 #ifdef LDAP_DEBUG
1570         else {
1571                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1572         }
1573
1574         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1575                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1576         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1577 #endif
1578
1579         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1580                 ? SLAP_CONTROL_CRITICAL
1581                 : SLAP_CONTROL_NONCRITICAL;
1582
1583         rs->sr_err = LDAP_SUCCESS;
1584         return LDAP_SUCCESS;
1585 }
1586
1587 static int parseSubentries (
1588         Operation *op,
1589         SlapReply *rs,
1590         LDAPControl *ctrl )
1591 {
1592         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1593                 rs->sr_text = "subentries control specified multiple times";
1594                 return LDAP_PROTOCOL_ERROR;
1595         }
1596
1597         /* FIXME: should use BER library */
1598         if( ( ctrl->ldctl_value.bv_len != 3 )
1599                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1600                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1601         {
1602                 rs->sr_text = "subentries control value encoding is bogus";
1603                 return LDAP_PROTOCOL_ERROR;
1604         }
1605
1606         op->o_subentries = ctrl->ldctl_iscritical
1607                 ? SLAP_CONTROL_CRITICAL
1608                 : SLAP_CONTROL_NONCRITICAL;
1609
1610         if (ctrl->ldctl_value.bv_val[2]) {
1611                 set_subentries_visibility( op );
1612         }
1613
1614         return LDAP_SUCCESS;
1615 }
1616
1617 static int parsePermissiveModify (
1618         Operation *op,
1619         SlapReply *rs,
1620         LDAPControl *ctrl )
1621 {
1622         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1623                 rs->sr_text = "permissiveModify control specified multiple times";
1624                 return LDAP_PROTOCOL_ERROR;
1625         }
1626
1627         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1628                 rs->sr_text = "permissiveModify control value not absent";
1629                 return LDAP_PROTOCOL_ERROR;
1630         }
1631
1632         op->o_permissive_modify = ctrl->ldctl_iscritical
1633                 ? SLAP_CONTROL_CRITICAL
1634                 : SLAP_CONTROL_NONCRITICAL;
1635
1636         return LDAP_SUCCESS;
1637 }
1638
1639 static int parseDomainScope (
1640         Operation *op,
1641         SlapReply *rs,
1642         LDAPControl *ctrl )
1643 {
1644         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1645                 rs->sr_text = "domainScope control specified multiple times";
1646                 return LDAP_PROTOCOL_ERROR;
1647         }
1648
1649         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1650                 rs->sr_text = "domainScope control value not empty";
1651                 return LDAP_PROTOCOL_ERROR;
1652         }
1653
1654         op->o_domain_scope = ctrl->ldctl_iscritical
1655                 ? SLAP_CONTROL_CRITICAL
1656                 : SLAP_CONTROL_NONCRITICAL;
1657
1658         return LDAP_SUCCESS;
1659 }
1660
1661 #ifdef SLAP_CONTROL_X_TREE_DELETE
1662 static int parseTreeDelete (
1663         Operation *op,
1664         SlapReply *rs,
1665         LDAPControl *ctrl )
1666 {
1667         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1668                 rs->sr_text = "treeDelete control specified multiple times";
1669                 return LDAP_PROTOCOL_ERROR;
1670         }
1671
1672         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
1673                 rs->sr_text = "treeDelete control value not absent";
1674                 return LDAP_PROTOCOL_ERROR;
1675         }
1676
1677         op->o_tree_delete = ctrl->ldctl_iscritical
1678                 ? SLAP_CONTROL_CRITICAL
1679                 : SLAP_CONTROL_NONCRITICAL;
1680
1681         return LDAP_SUCCESS;
1682 }
1683 #endif
1684
1685 static int parseSearchOptions (
1686         Operation *op,
1687         SlapReply *rs,
1688         LDAPControl *ctrl )
1689 {
1690         BerElement *ber;
1691         ber_int_t search_flags;
1692         ber_tag_t tag;
1693
1694         if ( BER_BVISNULL( &ctrl->ldctl_value )) {
1695                 rs->sr_text = "searchOptions control value is absent";
1696                 return LDAP_PROTOCOL_ERROR;
1697         }
1698
1699         if ( BER_BVISEMPTY( &ctrl->ldctl_value )) {
1700                 rs->sr_text = "searchOptions control value is empty";
1701                 return LDAP_PROTOCOL_ERROR;
1702         }
1703
1704         ber = ber_init( &ctrl->ldctl_value );
1705         if( ber == NULL ) {
1706                 rs->sr_text = "internal error";
1707                 return LDAP_OTHER;
1708         }
1709
1710         tag = ber_scanf( ber, "{i}", &search_flags );
1711         (void) ber_free( ber, 1 );
1712
1713         if ( tag == LBER_ERROR ) {
1714                 rs->sr_text = "searchOptions control decoding error";
1715                 return LDAP_PROTOCOL_ERROR;
1716         }
1717
1718         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1719                 /* Search flags not recognised so far,
1720                  * including:
1721                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOT
1722                  */
1723                 if ( ctrl->ldctl_iscritical ) {
1724                         rs->sr_text = "searchOptions contained unrecognized flag";
1725                         return LDAP_UNWILLING_TO_PERFORM;
1726                 }
1727
1728                 /* Ignore */
1729                 Debug( LDAP_DEBUG_TRACE,
1730                         "searchOptions: conn=%lu unrecognized flag(s) 0x%x (non-critical)\n",
1731                         op->o_connid, (unsigned)search_flags, 0 );
1732
1733                 return LDAP_SUCCESS;
1734         }
1735
1736         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1737                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1738                         rs->sr_text = "searchOptions control specified multiple times "
1739                                 "or with domainScope control";
1740                         return LDAP_PROTOCOL_ERROR;
1741                 }
1742
1743                 op->o_domain_scope = ctrl->ldctl_iscritical
1744                         ? SLAP_CONTROL_CRITICAL
1745                         : SLAP_CONTROL_NONCRITICAL;
1746         }
1747
1748         return LDAP_SUCCESS;
1749 }
1750
1751 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
1752 struct berval session_tracking_formats[] = {
1753         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_SESSION_ID ),
1754                 BER_BVC( "RADIUS-Acct-Session-Id" ),
1755         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_RADIUS_ACCT_MULTI_SESSION_ID ),
1756                 BER_BVC( "RADIUS-Acct-Multi-Session-Id" ),
1757         BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME ),
1758                 BER_BVC( "USERNAME" ),
1759
1760         BER_BVNULL
1761 };
1762
1763 static int parseSessionTracking(
1764         Operation *op,
1765         SlapReply *rs,
1766         LDAPControl *ctrl )
1767 {
1768         BerElement              *ber;
1769         ber_tag_t               tag;
1770         ber_len_t               len;
1771         int                     i, rc;
1772
1773         struct berval           sessionSourceIp = BER_BVNULL,
1774                                 sessionSourceName = BER_BVNULL,
1775                                 formatOID = BER_BVNULL,
1776                                 sessionTrackingIdentifier = BER_BVNULL;
1777
1778         size_t                  st_len, st_pos;
1779
1780         if ( ctrl->ldctl_iscritical ) {
1781                 rs->sr_text = "sessionTracking criticality is TRUE";
1782                 return LDAP_PROTOCOL_ERROR;
1783         }
1784
1785         if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
1786                 rs->sr_text = "sessionTracking control value is absent";
1787                 return LDAP_PROTOCOL_ERROR;
1788         }
1789
1790         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1791                 rs->sr_text = "sessionTracking control value is empty";
1792                 return LDAP_PROTOCOL_ERROR;
1793         }
1794
1795         /* TODO: add the capability to determine if a client is allowed
1796          * to use this control, based on identity, ip and so */
1797
1798         ber = ber_init( &ctrl->ldctl_value );
1799         if ( ber == NULL ) {
1800                 rs->sr_text = "internal error";
1801                 return LDAP_OTHER;
1802         }
1803
1804         tag = ber_skip_tag( ber, &len );
1805         if ( tag != LBER_SEQUENCE ) {
1806                 tag = LBER_ERROR;
1807                 goto error;
1808         }
1809
1810         /* sessionSourceIp */
1811         tag = ber_peek_tag( ber, &len );
1812         if ( tag == LBER_DEFAULT ) {
1813                 tag = LBER_ERROR;
1814                 goto error;
1815         }
1816
1817         if ( len == 0 ) {
1818                 tag = ber_skip_tag( ber, &len );
1819
1820         } else if ( len > 128 ) {
1821                 rs->sr_text = "sessionTracking.sessionSourceIp too long";
1822                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1823                 goto error;
1824
1825         } else {
1826                 tag = ber_scanf( ber, "m", &sessionSourceIp );
1827         }
1828
1829         if ( ldif_is_not_printable( sessionSourceIp.bv_val, sessionSourceIp.bv_len ) ) {
1830                 BER_BVZERO( &sessionSourceIp );
1831         }
1832
1833         /* sessionSourceName */
1834         tag = ber_peek_tag( ber, &len );
1835         if ( tag == LBER_DEFAULT ) {
1836                 tag = LBER_ERROR;
1837                 goto error;
1838         }
1839
1840         if ( len == 0 ) {
1841                 tag = ber_skip_tag( ber, &len );
1842
1843         } else if ( len > 65536 ) {
1844                 rs->sr_text = "sessionTracking.sessionSourceName too long";
1845                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1846                 goto error;
1847
1848         } else {
1849                 tag = ber_scanf( ber, "m", &sessionSourceName );
1850         }
1851
1852         if ( ldif_is_not_printable( sessionSourceName.bv_val, sessionSourceName.bv_len ) ) {
1853                 BER_BVZERO( &sessionSourceName );
1854         }
1855
1856         /* formatOID */
1857         tag = ber_peek_tag( ber, &len );
1858         if ( tag == LBER_DEFAULT ) {
1859                 tag = LBER_ERROR;
1860                 goto error;
1861         }
1862
1863         if ( len == 0 ) {
1864                 rs->sr_text = "sessionTracking.formatOID empty";
1865                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1866                 goto error;
1867
1868         } else if ( len > 1024 ) {
1869                 rs->sr_text = "sessionTracking.formatOID too long";
1870                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1871                 goto error;
1872
1873         } else {
1874                 tag = ber_scanf( ber, "m", &formatOID );
1875         }
1876
1877         rc = numericoidValidate( NULL, &formatOID );
1878         if ( rc != LDAP_SUCCESS ) {
1879                 rs->sr_text = "sessionTracking.formatOID invalid";
1880                 goto error;
1881         }
1882
1883         for ( i = 0; !BER_BVISNULL( &session_tracking_formats[ i ] ); i += 2 )
1884         {
1885                 if ( bvmatch( &formatOID, &session_tracking_formats[ i ] ) ) {
1886                         formatOID = session_tracking_formats[ i + 1 ];
1887                         break;
1888                 }
1889         }
1890
1891         /* sessionTrackingIdentifier */
1892         tag = ber_peek_tag( ber, &len );
1893         if ( tag == LBER_DEFAULT ) {
1894                 tag = LBER_ERROR;
1895                 goto error;
1896         }
1897
1898         if ( len == 0 ) {
1899                 tag = ber_skip_tag( ber, &len );
1900
1901         } else {
1902                 /* note: should not be more than 65536... */
1903                 tag = ber_scanf( ber, "m", &sessionTrackingIdentifier );
1904                 if ( ldif_is_not_printable( sessionTrackingIdentifier.bv_val, sessionTrackingIdentifier.bv_len ) ) {
1905                         /* we want the OID printed, at least */
1906                         BER_BVSTR( &sessionTrackingIdentifier, "" );
1907                 }
1908         }
1909
1910         /* closure */
1911         tag = ber_skip_tag( ber, &len );
1912         if ( tag != LBER_DEFAULT || len != 0 ) {
1913                 tag = LBER_ERROR;
1914                 goto error;
1915         }
1916         tag = 0;
1917
1918         st_len = 0;
1919         if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1920                 st_len += STRLENOF( "IP=" ) + sessionSourceIp.bv_len;
1921         }
1922         if ( !BER_BVISNULL( &sessionSourceName ) ) {
1923                 if ( st_len ) st_len++;
1924                 st_len += STRLENOF( "NAME=" ) + sessionSourceName.bv_len;
1925         }
1926         if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1927                 if ( st_len ) st_len++;
1928                 st_len += formatOID.bv_len + STRLENOF( "=" )
1929                         + sessionTrackingIdentifier.bv_len;
1930         }
1931
1932         if ( st_len == 0 ) {
1933                 goto error;
1934         }
1935
1936         st_len += STRLENOF( " []" );
1937         st_pos = strlen( op->o_log_prefix );
1938
1939         if ( sizeof( op->o_log_prefix ) - st_pos > st_len ) {
1940                 char    *ptr = &op->o_log_prefix[ st_pos ];
1941
1942                 ptr = lutil_strcopy( ptr, " [" /*]*/ );
1943
1944                 st_len = 0;
1945                 if ( !BER_BVISNULL( &sessionSourceIp ) ) {
1946                         ptr = lutil_strcopy( ptr, "IP=" );
1947                         ptr = lutil_strcopy( ptr, sessionSourceIp.bv_val );
1948                         st_len++;
1949                 }
1950
1951                 if ( !BER_BVISNULL( &sessionSourceName ) ) {
1952                         if ( st_len ) *ptr++ = ' ';
1953                         ptr = lutil_strcopy( ptr, "NAME=" );
1954                         ptr = lutil_strcopy( ptr, sessionSourceName.bv_val );
1955                         st_len++;
1956                 }
1957
1958                 if ( !BER_BVISNULL( &sessionTrackingIdentifier ) ) {
1959                         if ( st_len ) *ptr++ = ' ';
1960                         ptr = lutil_strcopy( ptr, formatOID.bv_val );
1961                         *ptr++ = '=';
1962                         ptr = lutil_strcopy( ptr, sessionTrackingIdentifier.bv_val );
1963                 }
1964
1965                 *ptr++ = /*[*/ ']';
1966                 *ptr = '\0';
1967         }
1968
1969 error:;
1970         (void)ber_free( ber, 1 );
1971
1972         if ( tag == LBER_ERROR ) {
1973                 rs->sr_text = "sessionTracking control decoding error";
1974                 return LDAP_PROTOCOL_ERROR;
1975         }
1976
1977
1978         return rs->sr_err;
1979 }
1980
1981 int
1982 slap_ctrl_session_tracking_add(
1983         Operation *op,
1984         SlapReply *rs,
1985         struct berval *ip,
1986         struct berval *name,
1987         struct berval *id,
1988         LDAPControl *ctrl )
1989 {
1990         BerElementBuffer berbuf;
1991         BerElement      *ber = (BerElement *)&berbuf;
1992
1993         static struct berval    oid = BER_BVC( LDAP_CONTROL_X_SESSION_TRACKING_USERNAME );
1994
1995         assert( ctrl != NULL );
1996
1997         ber_init2( ber, NULL, LBER_USE_DER );
1998
1999         ber_printf( ber, "{OOOO}", ip, name, &oid, id );
2000
2001         if ( ber_flatten2( ber, &ctrl->ldctl_value, 0 ) == -1 ) {
2002                 rs->sr_err = LDAP_OTHER;
2003                 goto done;
2004         }
2005
2006         ctrl->ldctl_oid = LDAP_CONTROL_X_SESSION_TRACKING;
2007         ctrl->ldctl_iscritical = 0;
2008
2009         rs->sr_err = LDAP_SUCCESS;
2010
2011 done:;
2012         return rs->sr_err;
2013 }
2014
2015 int
2016 slap_ctrl_session_tracking_request_add( Operation *op, SlapReply *rs, LDAPControl *ctrl )
2017 {
2018         static struct berval    bv_unknown = BER_BVC( SLAP_STRING_UNKNOWN );
2019         struct berval           ip = BER_BVNULL,
2020                                 name = BER_BVNULL,
2021                                 id = BER_BVNULL;
2022
2023         if ( !BER_BVISNULL( &op->o_conn->c_peer_name ) &&
2024                 memcmp( op->o_conn->c_peer_name.bv_val, "IP=", STRLENOF( "IP=" ) ) == 0 )
2025         {
2026                 char    *ptr;
2027
2028                 ip.bv_val = op->o_conn->c_peer_name.bv_val + STRLENOF( "IP=" );
2029                 ip.bv_len = op->o_conn->c_peer_name.bv_len - STRLENOF( "IP=" );
2030
2031                 ptr = ber_bvchr( &ip, ':' );
2032                 if ( ptr ) {
2033                         ip.bv_len = ptr - ip.bv_val;
2034                 }
2035         }
2036
2037         if ( !BER_BVISNULL( &op->o_conn->c_peer_domain ) &&
2038                 !bvmatch( &op->o_conn->c_peer_domain, &bv_unknown ) )
2039         {
2040                 name = op->o_conn->c_peer_domain;
2041         }
2042
2043         if ( !BER_BVISNULL( &op->o_dn ) && !BER_BVISEMPTY( &op->o_dn ) ) {
2044                 id = op->o_dn;
2045         }
2046
2047         return slap_ctrl_session_tracking_add( op, rs, &ip, &name, &id, ctrl );
2048 }
2049 #endif
2050
2051 #ifdef SLAP_CONTROL_X_WHATFAILED
2052 static int parseWhatFailed(
2053         Operation *op,
2054         SlapReply *rs,
2055         LDAPControl *ctrl )
2056 {
2057         if ( op->o_whatFailed != SLAP_CONTROL_NONE ) {
2058                 rs->sr_text = "\"WHat Failed?\" control specified multiple times";
2059                 return LDAP_PROTOCOL_ERROR;
2060         }
2061
2062         if ( !BER_BVISNULL( &ctrl->ldctl_value )) {
2063                 rs->sr_text = "\"What Failed?\" control value not absent";
2064                 return LDAP_PROTOCOL_ERROR;
2065         }
2066
2067         op->o_whatFailed = ctrl->ldctl_iscritical
2068                 ? SLAP_CONTROL_CRITICAL
2069                 : SLAP_CONTROL_NONCRITICAL;
2070
2071         return LDAP_SUCCESS;
2072 }
2073
2074 int
2075 slap_ctrl_whatFailed_add(
2076         Operation *op,
2077         SlapReply *rs,
2078         char **oids )
2079 {
2080         BerElementBuffer berbuf;
2081         BerElement *ber = (BerElement *) &berbuf;
2082         LDAPControl **ctrls = NULL;
2083         struct berval ctrlval;
2084         int i, rc = LDAP_SUCCESS;
2085
2086         ber_init2( ber, NULL, LBER_USE_DER );
2087         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2088         ber_printf( ber, "[" /*]*/ );
2089         for ( i = 0; oids[ i ] != NULL; i++ ) {
2090                 ber_printf( ber, "s", oids[ i ] );
2091         }
2092         ber_printf( ber, /*[*/ "]" );
2093
2094         if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
2095                 rc = LDAP_OTHER;
2096                 goto done;
2097         }
2098
2099         i = 0;
2100         if ( rs->sr_ctrls != NULL ) {
2101                 for ( ; rs->sr_ctrls[ i ] != NULL; i++ ) {
2102                         if ( strcmp( rs->sr_ctrls[ i ]->ldctl_oid, LDAP_CONTROL_X_WHATFAILED ) != 0 ) {
2103                                 /* TODO: add */
2104                                 assert( 0 );
2105                         }
2106                 }
2107         }
2108
2109         ctrls = op->o_tmprealloc( rs->sr_ctrls,
2110                         sizeof(LDAPControl *)*( i + 2 )
2111                         + sizeof(LDAPControl)
2112                         + ctrlval.bv_len + 1,
2113                         op->o_tmpmemctx );
2114         if ( ctrls == NULL ) {
2115                 rc = LDAP_OTHER;
2116                 goto done;
2117         }
2118         ctrls[ i + 1 ] = NULL;
2119         ctrls[ i ] = (LDAPControl *)&ctrls[ i + 2 ];
2120         ctrls[ i ]->ldctl_oid = LDAP_CONTROL_X_WHATFAILED;
2121         ctrls[ i ]->ldctl_iscritical = 0;
2122         ctrls[ i ]->ldctl_value.bv_val = (char *)&ctrls[ i ][ 1 ];
2123         AC_MEMCPY( ctrls[ i ]->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len + 1 );
2124         ctrls[ i ]->ldctl_value.bv_len = ctrlval.bv_len;
2125
2126         ber_free_buf( ber );
2127
2128         rs->sr_ctrls = ctrls;
2129
2130 done:;
2131         return rc;
2132 }
2133 #endif