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