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