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 1998-2004 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
  25 #include "../../libraries/liblber/lber-int.h"
  26
  27 static SLAP_CTRL_PARSE_FN parseAssert;
  28 static SLAP_CTRL_PARSE_FN parsePreRead;
  29 static SLAP_CTRL_PARSE_FN parsePostRead;
  30 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  31 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  32 static SLAP_CTRL_PARSE_FN parseModifyIncrement;
  33 static SLAP_CTRL_PARSE_FN parseNoOp;
  34 static SLAP_CTRL_PARSE_FN parsePagedResults;
  35 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  36 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  37 static SLAP_CTRL_PARSE_FN parseDomainScope;
  38 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  39 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  40
  41 #ifdef LDAP_CONTROL_SUBENTRIES
  42 static SLAP_CTRL_PARSE_FN parseSubentries;
  43 #endif
  44 static SLAP_CTRL_PARSE_FN parseLDAPsync;
  45
  46 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  47
  48 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  49 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  50
  51 struct slap_control_ids slap_cids;
  52
  53 struct slap_control {
  54         /* Control OID */
  55         char *sc_oid;
  56
  57         /* The controlID for this control */
  58         int sc_cid;
  59
  60         /* Operations supported by control */
  61         slap_mask_t sc_mask;
  62
  63         /* Extended operations supported by control */
  64         char **sc_extendedops;
  65
  66         /* Control parsing callback */
  67         SLAP_CTRL_PARSE_FN *sc_parse;
  68
  69         LDAP_SLIST_ENTRY(slap_control) sc_next;
  70 };
  71
  72 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  73         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  74
  75 /*
  76  * all known request control OIDs should be added to this list
  77  */
  78 char **slap_known_controls = NULL;
  79 static int num_known_controls;
  80
  81 static char *proxy_authz_extops[] = {
  82         LDAP_EXOP_MODIFY_PASSWD,
  83         LDAP_EXOP_X_WHO_AM_I,
  84         NULL
  85 };
  86
  87 static struct slap_control control_defs[] = {
  88         {  LDAP_CONTROL_ASSERT,
  89                 (int)offsetof(struct slap_control_ids, sc_assert),
  90                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
  91                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  92         { LDAP_CONTROL_PRE_READ,
  93                 (int)offsetof(struct slap_control_ids, sc_preRead),
  94                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
  95                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  96         { LDAP_CONTROL_POST_READ,
  97                 (int)offsetof(struct slap_control_ids, sc_postRead),
  98                 SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
  99                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 100         { LDAP_CONTROL_VALUESRETURNFILTER,
 101                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 102                 SLAP_CTRL_SEARCH, NULL,
 103                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 104         { LDAP_CONTROL_PAGEDRESULTS,
 105                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 106                 SLAP_CTRL_SEARCH, NULL,
 107                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 108 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 109         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 110                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 111                 SLAP_CTRL_FRONTEND|SLAP_CTRL_SEARCH, NULL,
 112                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 113 #endif
 114 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 115         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 116                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 117                 SLAP_CTRL_MODIFY, NULL,
 118                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 119 #endif
 120 #ifdef LDAP_CONTROL_X_TREE_DELETE
 121         { LDAP_CONTROL_X_TREE_DELETE,
 122                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 123                 SLAP_CTRL_DELETE, NULL,
 124                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 125 #endif
 126 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
 127         { LDAP_CONTORL_X_SEARCH_OPTIONS,
 128                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 129                 SLAP_CTRL_FRONTEND|SLAP_CTRL_SEARCH, NULL,
 130                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 131 #endif
 132 #ifdef LDAP_CONTROL_SUBENTRIES
 133         { LDAP_CONTROL_SUBENTRIES,
 134                 (int)offsetof(struct slap_control_ids, sc_subentries),
 135                 SLAP_CTRL_SEARCH, NULL,
 136                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 137 #endif
 138         { LDAP_CONTROL_NOOP,
 139                 (int)offsetof(struct slap_control_ids, sc_noOp),
 140                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 141                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 142         { LDAP_CONTROL_SYNC,
 143                 (int)offsetof(struct slap_control_ids, sc_LDAPsync),
 144                 SLAP_CTRL_HIDE|SLAP_CTRL_SEARCH, NULL,
 145                 parseLDAPsync, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 146 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 147         { LDAP_CONTROL_MODIFY_INCREMENT,
 148                 (int)offsetof(struct slap_control_ids, sc_modifyIncrement),
 149                 SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
 150                 parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 151 #endif
 152         { LDAP_CONTROL_MANAGEDSAIT,
 153                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 154                 SLAP_CTRL_ACCESS, NULL,
 155                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 156         { LDAP_CONTROL_PROXY_AUTHZ,
 157                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 158                 SLAP_CTRL_FRONTEND|SLAP_CTRL_ACCESS, proxy_authz_extops,
 159                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 160         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 161 };
 162
 163 /*
 164  * Register a supported control.
 165  *
 166  * This can be called by an OpenLDAP plugin or, indirectly, by a
 167  * SLAPI plugin calling slapi_register_supported_control().
 168  */
 169 int
 170 register_supported_control(const char *controloid,
 171         slap_mask_t controlmask,
 172         char **controlexops,
 173         SLAP_CTRL_PARSE_FN *controlparsefn,
 174         int *controlcid)
 175 {
 176         struct slap_control *sc;
 177
 178         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 179
 180         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 181         if ( sc == NULL ) return LDAP_NO_MEMORY;
 182
 183         sc->sc_oid = ch_strdup( controloid );
 184         sc->sc_mask = controlmask;
 185         if ( controlexops != NULL ) {
 186                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 187                 if ( sc->sc_extendedops == NULL ) {
 188                         ch_free( sc );
 189                         return LDAP_NO_MEMORY;
 190                 }
 191         } else {
 192                 sc->sc_extendedops = NULL;
 193         }
 194         sc->sc_parse = controlparsefn;
 195
 196         /* Update slap_known_controls, too. */
 197         if ( slap_known_controls == NULL ) {
 198                 slap_known_controls = (char **)SLAP_MALLOC( 2 * sizeof(char *) );
 199                 if ( slap_known_controls == NULL ) {
 200                         if ( sc->sc_extendedops != NULL ) {
 201                                 ldap_charray_free( sc->sc_extendedops );
 202                         }
 203                         ch_free( sc );
 204                         return LDAP_NO_MEMORY;
 205                 }
 206
 207         } else {
 208                 char **new_known_controls;
 209
 210                 new_known_controls = (char **)SLAP_REALLOC(
 211                         slap_known_controls, (num_known_controls + 2) * sizeof(char *) );
 212
 213                 if ( new_known_controls == NULL ) {
 214                         if ( sc->sc_extendedops != NULL ) {
 215                                 ldap_charray_free( sc->sc_extendedops );
 216                         }
 217                         ch_free( sc );
 218                         return LDAP_NO_MEMORY;
 219                 }
 220                 slap_known_controls = new_known_controls;
 221         }
 222         if ( controlcid ) *controlcid = num_known_controls;
 223         sc->sc_cid = num_known_controls;
 224         slap_known_controls[num_known_controls++] = ch_strdup( sc->sc_oid );
 225         slap_known_controls[num_known_controls] = NULL;
 226
 227         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 228         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 229         return LDAP_SUCCESS;
 230 }
 231
 232 /*
 233  * One-time initialization of internal controls.
 234  */
 235 int
 236 slap_controls_init( void )
 237 {
 238         int i, rc;
 239         struct slap_control *sc;
 240
 241         rc = LDAP_SUCCESS;
 242
 243         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 244                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 245                 rc = register_supported_control( control_defs[i].sc_oid,
 246                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 247                         control_defs[i].sc_parse, cid );
 248                 if ( rc != LDAP_SUCCESS ) break;
 249         }
 250
 251         return rc;
 252 }
 253
 254 /*
 255  * Free memory associated with list of supported controls.
 256  */
 257 void
 258 controls_destroy( void )
 259 {
 260         struct slap_control *sc;
 261
 262         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 263                 sc = LDAP_SLIST_FIRST(&controls_list);
 264                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 265
 266                 ch_free( sc->sc_oid );
 267                 if ( sc->sc_extendedops != NULL ) {
 268                         ldap_charray_free( sc->sc_extendedops );
 269                 }
 270                 ch_free( sc );
 271         }
 272         ldap_charray_free( slap_known_controls );
 273 }
 274
 275 /*
 276  * Format the supportedControl attribute of the root DSE,
 277  * detailing which controls are supported by the directory
 278  * server.
 279  */
 280 int
 281 controls_root_dse_info( Entry *e )
 282 {
 283         AttributeDescription *ad_supportedControl
 284                 = slap_schema.si_ad_supportedControl;
 285         struct berval vals[2];
 286         struct slap_control *sc;
 287
 288         vals[1].bv_val = NULL;
 289         vals[1].bv_len = 0;
 290
 291         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 292                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 293
 294                 vals[0].bv_val = sc->sc_oid;
 295                 vals[0].bv_len = strlen( sc->sc_oid );
 296
 297                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 298                         return -1;
 299                 }
 300         }
 301
 302         return 0;
 303 }
 304
 305 /*
 306  * Return a list of OIDs and operation masks for supported
 307  * controls. Used by SLAPI.
 308  */
 309 int
 310 get_supported_controls(char ***ctrloidsp,
 311         slap_mask_t **ctrlmasks)
 312 {
 313         int i, n;
 314         char **oids;
 315         slap_mask_t *masks;
 316         int rc;
 317         struct slap_control *sc;
 318
 319         n = 0;
 320
 321         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 322                 n++;
 323         }
 324
 325         if ( n == 0 ) {
 326                 *ctrloidsp = NULL;
 327                 *ctrlmasks = NULL;
 328                 return LDAP_SUCCESS;
 329         }
 330
 331         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 332         if ( oids == NULL ) {
 333                 return LDAP_NO_MEMORY;
 334         }
 335         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 336         if  ( masks == NULL ) {
 337                 ch_free( oids );
 338                 return LDAP_NO_MEMORY;
 339         }
 340
 341         n = 0;
 342
 343         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 344                 oids[n] = ch_strdup( sc->sc_oid );
 345                 masks[n] = sc->sc_mask;
 346                 n++;
 347         }
 348         oids[n] = NULL;
 349         masks[n] = 0;
 350
 351         *ctrloidsp = oids;
 352         *ctrlmasks = masks;
 353
 354         return LDAP_SUCCESS;
 355 }
 356
 357 /*
 358  * Find a control given its OID.
 359  */
 360 static struct slap_control *
 361 find_ctrl( const char *oid )
 362 {
 363         struct slap_control *sc;
 364
 365         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 366                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 367                         return sc;
 368                 }
 369         }
 370
 371         return NULL;
 372 }
 373
 374 void slap_free_ctrls(
 375         Operation *op,
 376         LDAPControl **ctrls )
 377 {
 378         int i;
 379
 380         for (i=0; ctrls[i]; i++) {
 381                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 382         }
 383         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 384 }
 385
 386 int get_ctrls(
 387         Operation *op,
 388         SlapReply *rs,
 389         int sendres )
 390 {
 391         int nctrls = 0;
 392         ber_tag_t tag;
 393         ber_len_t len;
 394         char *opaque;
 395         BerElement *ber = op->o_ber;
 396         struct slap_control *sc;
 397         struct berval bv;
 398
 399         len = ber_pvt_ber_remaining(ber);
 400
 401         if( len == 0) {
 402                 /* no controls */
 403                 rs->sr_err = LDAP_SUCCESS;
 404                 return rs->sr_err;
 405         }
 406
 407         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 408                 if( tag == LBER_ERROR ) {
 409                         rs->sr_err = SLAPD_DISCONNECT;
 410                         rs->sr_text = "unexpected data in PDU";
 411                 }
 412
 413                 goto return_results;
 414         }
 415
 416         Debug( LDAP_DEBUG_TRACE,
 417                 "=> get_ctrls\n", 0, 0, 0 );
 418
 419         if( op->o_protocol < LDAP_VERSION3 ) {
 420                 rs->sr_err = SLAPD_DISCONNECT;
 421                 rs->sr_text = "controls require LDAPv3";
 422                 goto return_results;
 423         }
 424
 425         /* one for first control, one for termination */
 426         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 427
 428 #if 0
 429         if( op->ctrls == NULL ) {
 430                 rs->sr_err = LDAP_NO_MEMORY;
 431                 rs->sr_text = "no memory";
 432                 goto return_results;
 433         }
 434 #endif
 435
 436         op->o_ctrls[nctrls] = NULL;
 437
 438         /* step through each element */
 439         for( tag = ber_first_element( ber, &len, &opaque );
 440                 tag != LBER_ERROR;
 441                 tag = ber_next_element( ber, &len, opaque ) )
 442         {
 443                 LDAPControl *c;
 444                 LDAPControl **tctrls;
 445
 446                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 447                 memset(c, 0, sizeof(LDAPControl));
 448
 449                 /* allocate pointer space for current controls (nctrls)
 450                  * + this control + extra NULL
 451                  */
 452                 tctrls = op->o_tmprealloc( op->o_ctrls,
 453                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 454
 455 #if 0
 456                 if( tctrls == NULL ) {
 457                         ch_free( c );
 458                         ldap_controls_free(op->o_ctrls);
 459                         op->o_ctrls = NULL;
 460
 461                         rs->sr_err = LDAP_NO_MEMORY;
 462                         rs->sr_text = "no memory";
 463                         goto return_results;
 464                 }
 465 #endif
 466                 op->o_ctrls = tctrls;
 467
 468                 op->o_ctrls[nctrls++] = c;
 469                 op->o_ctrls[nctrls] = NULL;
 470
 471                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 472                 c->ldctl_oid = bv.bv_val;
 473
 474                 if( tag == LBER_ERROR ) {
 475                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 476                                 0, 0, 0 );
 477
 478                         slap_free_ctrls( op, op->o_ctrls );
 479                         op->o_ctrls = NULL;
 480                         rs->sr_err = SLAPD_DISCONNECT;
 481                         rs->sr_text = "decoding controls error";
 482                         goto return_results;
 483
 484                 } else if( c->ldctl_oid == NULL ) {
 485                         Debug( LDAP_DEBUG_TRACE,
 486                                 "get_ctrls: conn %lu got emtpy OID.\n",
 487                                 op->o_connid, 0, 0 );
 488
 489                         slap_free_ctrls( op, op->o_ctrls );
 490                         op->o_ctrls = NULL;
 491                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 492                         rs->sr_text = "OID field is empty";
 493                         goto return_results;
 494                 }
 495
 496                 tag = ber_peek_tag( ber, &len );
 497
 498                 if( tag == LBER_BOOLEAN ) {
 499                         ber_int_t crit;
 500                         tag = ber_scanf( ber, "b", &crit );
 501
 502                         if( tag == LBER_ERROR ) {
 503                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 504                                         0, 0, 0 );
 505                                 slap_free_ctrls( op, op->o_ctrls );
 506                                 op->o_ctrls = NULL;
 507                                 rs->sr_err = SLAPD_DISCONNECT;
 508                                 rs->sr_text = "decoding controls error";
 509                                 goto return_results;
 510                         }
 511
 512                         c->ldctl_iscritical = (crit != 0);
 513                         tag = ber_peek_tag( ber, &len );
 514                 }
 515
 516                 if( tag == LBER_OCTETSTRING ) {
 517                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 518
 519                         if( tag == LBER_ERROR ) {
 520                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 521                                         "%s (%scritical): get value failed.\n",
 522                                         op->o_connid, c->ldctl_oid,
 523                                         c->ldctl_iscritical ? "" : "non" );
 524                                 slap_free_ctrls( op, op->o_ctrls );
 525                                 op->o_ctrls = NULL;
 526                                 rs->sr_err = SLAPD_DISCONNECT;
 527                                 rs->sr_text = "decoding controls error";
 528                                 goto return_results;
 529                         }
 530                 }
 531
 532                 Debug( LDAP_DEBUG_TRACE,
 533                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 534                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 535
 536                 sc = find_ctrl( c->ldctl_oid );
 537                 if( sc != NULL ) {
 538                         /* recognized control */
 539                         slap_mask_t tagmask;
 540                         switch( op->o_tag ) {
 541                         case LDAP_REQ_ADD:
 542                                 tagmask = SLAP_CTRL_ADD;
 543                                 break;
 544                         case LDAP_REQ_BIND:
 545                                 tagmask = SLAP_CTRL_BIND;
 546                                 break;
 547                         case LDAP_REQ_COMPARE:
 548                                 tagmask = SLAP_CTRL_COMPARE;
 549                                 break;
 550                         case LDAP_REQ_DELETE:
 551                                 tagmask = SLAP_CTRL_DELETE;
 552                                 break;
 553                         case LDAP_REQ_MODIFY:
 554                                 tagmask = SLAP_CTRL_MODIFY;
 555                                 break;
 556                         case LDAP_REQ_RENAME:
 557                                 tagmask = SLAP_CTRL_RENAME;
 558                                 break;
 559                         case LDAP_REQ_SEARCH:
 560                                 tagmask = SLAP_CTRL_SEARCH;
 561                                 break;
 562                         case LDAP_REQ_UNBIND:
 563                                 tagmask = SLAP_CTRL_UNBIND;
 564                                 break;
 565                         case LDAP_REQ_ABANDON:
 566                                 tagmask = SLAP_CTRL_ABANDON;
 567                                 break;
 568                         case LDAP_REQ_EXTENDED:
 569                                 tagmask=~0L;
 570                                 assert( op->ore_reqoid.bv_val != NULL );
 571                                 if( sc->sc_extendedops != NULL ) {
 572                                         int i;
 573                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 574                                                 if( strcmp( op->ore_reqoid.bv_val,
 575                                                         sc->sc_extendedops[i] ) == 0 )
 576                                                 {
 577                                                         tagmask=0L;
 578                                                         break;
 579                                                 }
 580                                         }
 581                                 }
 582                                 break;
 583                         default:
 584                                 rs->sr_err = LDAP_OTHER;
 585                                 rs->sr_text = "controls internal error";
 586                                 goto return_results;
 587                         }
 588
 589                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 590                                 /* available extension */
 591                                 int     rc;
 592
 593                                 if( !sc->sc_parse ) {
 594                                         rs->sr_err = LDAP_OTHER;
 595                                         rs->sr_text = "not yet implemented";
 596                                         goto return_results;
 597                                 }
 598
 599                                 rc = sc->sc_parse( op, rs, c );
 600                                 if ( rc ) {
 601                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 602                                         rs->sr_err = rc;
 603                                         goto return_results;
 604                                 }
 605
 606                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 607                                         /* kludge to disable backend_control() check */
 608                                         c->ldctl_iscritical = 0;
 609
 610                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 611                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 612                                 {
 613                                         /* kludge to disable backend_control() check */
 614                                         c->ldctl_iscritical = 0;
 615                                 }
 616
 617                         } else if( c->ldctl_iscritical ) {
 618                                 /* unavailable CRITICAL control */
 619                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 620                                 rs->sr_text = "critical extension is unavailable";
 621                                 goto return_results;
 622                         }
 623
 624                 } else if( c->ldctl_iscritical ) {
 625                         /* unrecognized CRITICAL control */
 626                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 627                         rs->sr_text = "critical extension is not recognized";
 628                         goto return_results;
 629                 }
 630 next_ctrl:;
 631         }
 632
 633 return_results:
 634         Debug( LDAP_DEBUG_TRACE,
 635                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 636                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 637
 638         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 639                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 640                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 641                         send_ldap_disconnect( op, rs );
 642                         rs->sr_err = SLAPD_DISCONNECT;
 643                 } else {
 644                         send_ldap_result( op, rs );
 645                 }
 646         }
 647
 648         return rs->sr_err;
 649 }
 650
 651 static int parseModifyIncrement (
 652         Operation *op,
 653         SlapReply *rs,
 654         LDAPControl *ctrl )
 655 {
 656 #if 0
 657         if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
 658                 rs->sr_text = "modifyIncrement control specified multiple times";
 659                 return LDAP_PROTOCOL_ERROR;
 660         }
 661 #endif
 662
 663         if ( ctrl->ldctl_value.bv_len ) {
 664                 rs->sr_text = "modifyIncrement control value not empty";
 665                 return LDAP_PROTOCOL_ERROR;
 666         }
 667
 668 #if 0
 669         op->o_modifyIncrement = ctrl->ldctl_iscritical
 670                 ? SLAP_CONTROL_CRITICAL
 671                 : SLAP_CONTROL_NONCRITICAL;
 672 #endif
 673
 674         return LDAP_SUCCESS;
 675 }
 676
 677 static int parseManageDSAit (
 678         Operation *op,
 679         SlapReply *rs,
 680         LDAPControl *ctrl )
 681 {
 682         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 683                 rs->sr_text = "manageDSAit control specified multiple times";
 684                 return LDAP_PROTOCOL_ERROR;
 685         }
 686
 687         if ( ctrl->ldctl_value.bv_len ) {
 688                 rs->sr_text = "manageDSAit control value not empty";
 689                 return LDAP_PROTOCOL_ERROR;
 690         }
 691
 692         op->o_managedsait = ctrl->ldctl_iscritical
 693                 ? SLAP_CONTROL_CRITICAL
 694                 : SLAP_CONTROL_NONCRITICAL;
 695
 696         return LDAP_SUCCESS;
 697 }
 698
 699 static int parseProxyAuthz (
 700         Operation *op,
 701         SlapReply *rs,
 702         LDAPControl *ctrl )
 703 {
 704         int             rc;
 705         struct berval   dn = BER_BVNULL;
 706
 707         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 708                 rs->sr_text = "proxy authorization control specified multiple times";
 709                 return LDAP_PROTOCOL_ERROR;
 710         }
 711
 712         op->o_proxy_authz = ctrl->ldctl_iscritical
 713                 ? SLAP_CONTROL_CRITICAL
 714                 : SLAP_CONTROL_NONCRITICAL;
 715
 716         Debug( LDAP_DEBUG_ARGS,
 717                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 718                 op->o_connid,
 719                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 720                 0 );
 721
 722         if( ctrl->ldctl_value.bv_len == 0 ) {
 723                 Debug( LDAP_DEBUG_TRACE,
 724                         "parseProxyAuthz: conn=%lu anonymous\n",
 725                         op->o_connid, 0, 0 );
 726
 727                 /* anonymous */
 728                 free( op->o_dn.bv_val );
 729                 op->o_dn.bv_len = 0;
 730                 op->o_dn.bv_val = ch_strdup( "" );
 731
 732                 free( op->o_ndn.bv_val );
 733                 op->o_ndn.bv_len = 0;
 734                 op->o_ndn.bv_val = ch_strdup( "" );
 735
 736                 return LDAP_SUCCESS;
 737         }
 738
 739         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 740                         NULL, &dn, SLAP_GETDN_AUTHZID );
 741
 742         /* FIXME: empty DN in proxyAuthz control should be legal... */
 743         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 744                 if ( dn.bv_val ) {
 745                         ch_free( dn.bv_val );
 746                 }
 747                 rs->sr_text = "authzId mapping failed";
 748                 return LDAP_PROXY_AUTHZ_FAILURE;
 749         }
 750
 751         Debug( LDAP_DEBUG_TRACE,
 752                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 753                 op->o_connid,
 754                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 755
 756         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 757
 758         if( rc ) {
 759                 ch_free( dn.bv_val );
 760                 rs->sr_text = "not authorized to assume identity";
 761                 return LDAP_PROXY_AUTHZ_FAILURE;
 762         }
 763
 764         ch_free( op->o_dn.bv_val );
 765         ch_free( op->o_ndn.bv_val );
 766
 767         op->o_dn.bv_val = NULL;
 768         op->o_ndn = dn;
 769
 770         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 771             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 772
 773         /*
 774          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 775          * from now on op->o_dn is normalized
 776          */
 777         ber_dupbv( &op->o_dn, &dn );
 778
 779         return LDAP_SUCCESS;
 780 }
 781
 782 static int parseNoOp (
 783         Operation *op,
 784         SlapReply *rs,
 785         LDAPControl *ctrl )
 786 {
 787         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 788                 rs->sr_text = "noop control specified multiple times";
 789                 return LDAP_PROTOCOL_ERROR;
 790         }
 791
 792         if ( ctrl->ldctl_value.bv_len ) {
 793                 rs->sr_text = "noop control value not empty";
 794                 return LDAP_PROTOCOL_ERROR;
 795         }
 796
 797         op->o_noop = ctrl->ldctl_iscritical
 798                 ? SLAP_CONTROL_CRITICAL
 799                 : SLAP_CONTROL_NONCRITICAL;
 800
 801         return LDAP_SUCCESS;
 802 }
 803
 804 static int parsePagedResults (
 805         Operation *op,
 806         SlapReply *rs,
 807         LDAPControl *ctrl )
 808 {
 809         int             rc = LDAP_SUCCESS;
 810         ber_tag_t       tag;
 811         ber_int_t       size;
 812         BerElement      *ber;
 813         struct berval   cookie = BER_BVNULL;
 814         PagedResultsState       *ps;
 815
 816         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 817                 rs->sr_text = "paged results control specified multiple times";
 818                 return LDAP_PROTOCOL_ERROR;
 819         }
 820
 821         if ( op->o_sync != SLAP_CONTROL_NONE ) {
 822                 rs->sr_text = "paged results control specified with sync control";
 823                 return LDAP_PROTOCOL_ERROR;
 824         }
 825
 826         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 827                 rs->sr_text = "paged results control value is empty (or absent)";
 828                 return LDAP_PROTOCOL_ERROR;
 829         }
 830
 831         /* Parse the control value
 832          *      realSearchControlValue ::= SEQUENCE {
 833          *              size    INTEGER (0..maxInt),
 834          *                              -- requested page size from client
 835          *                              -- result set size estimate from server
 836          *              cookie  OCTET STRING
 837          * }
 838          */
 839         ber = ber_init( &ctrl->ldctl_value );
 840         if ( ber == NULL ) {
 841                 rs->sr_text = "internal error";
 842                 return LDAP_OTHER;
 843         }
 844
 845         tag = ber_scanf( ber, "{im}", &size, &cookie );
 846
 847         if ( tag == LBER_ERROR ) {
 848                 rs->sr_text = "paged results control could not be decoded";
 849                 rc = LDAP_PROTOCOL_ERROR;
 850                 goto done;
 851         }
 852
 853         if ( size < 0 ) {
 854                 rs->sr_text = "paged results control size invalid";
 855                 rc = LDAP_PROTOCOL_ERROR;
 856                 goto done;
 857         }
 858
 859 #if 0
 860         /* defer cookie decoding/checks to backend... */
 861         if ( cookie.bv_len ) {
 862                 PagedResultsCookie reqcookie;
 863                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 864                         /* bad cookie */
 865                         rs->sr_text = "paged results cookie is invalid";
 866                         rc = LDAP_PROTOCOL_ERROR;
 867                         goto done;
 868                 }
 869
 870                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 871
 872                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 873                         /* bad cookie */
 874                         rs->sr_text = "paged results cookie is invalid";
 875                         rc = LDAP_PROTOCOL_ERROR;
 876                         goto done;
 877
 878                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 879                         rs->sr_text = "paged results cookie is invalid or old";
 880                         rc = LDAP_UNWILLING_TO_PERFORM;
 881                         goto done;
 882                 }
 883
 884         } else {
 885                 /* Initial request.  Initialize state. */
 886 #if 0
 887                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 888                         /* There's another pagedResults control on the
 889                          * same connection; reject new pagedResults controls
 890                          * (allowed by RFC2696) */
 891                         rs->sr_text = "paged results cookie unavailable; try later";
 892                         rc = LDAP_UNWILLING_TO_PERFORM;
 893                         goto done;
 894                 }
 895 #endif
 896                 op->o_pagedresults_state.ps_cookie = 0;
 897                 op->o_pagedresults_state.ps_count = 0;
 898         }
 899 #endif
 900
 901         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 902         *ps = op->o_conn->c_pagedresults_state;
 903         ps->ps_size = size;
 904         op->o_pagedresults_state = ps;
 905
 906         /* NOTE: according to RFC 2696 3.:
 907
 908     If the page size is greater than or equal to the sizeLimit value, the
 909     server should ignore the control as the request can be satisfied in a
 910     single page.
 911
 912          * NOTE: this assumes that the op->ors_slimit be set
 913          * before the controls are parsed.
 914          */
 915
 916         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 917                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 918
 919         } else if ( ctrl->ldctl_iscritical ) {
 920                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 921
 922         } else {
 923                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 924         }
 925
 926 done:;
 927         (void)ber_free( ber, 1 );
 928         return rc;
 929 }
 930
 931 static int parseAssert (
 932         Operation *op,
 933         SlapReply *rs,
 934         LDAPControl *ctrl )
 935 {
 936         BerElement      *ber;
 937         struct berval   fstr = BER_BVNULL;
 938         const char *err_msg = "";
 939
 940         if ( op->o_assert != SLAP_CONTROL_NONE ) {
 941                 rs->sr_text = "assert control specified multiple times";
 942                 return LDAP_PROTOCOL_ERROR;
 943         }
 944
 945         if ( ctrl->ldctl_value.bv_len == 0 ) {
 946                 rs->sr_text = "assert control value is empty (or absent)";
 947                 return LDAP_PROTOCOL_ERROR;
 948         }
 949
 950         ber = ber_init( &(ctrl->ldctl_value) );
 951         if (ber == NULL) {
 952                 rs->sr_text = "assert control: internal error";
 953                 return LDAP_OTHER;
 954         }
 955
 956         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
 957
 958         if( rs->sr_err != LDAP_SUCCESS ) {
 959                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 960                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 961                         send_ldap_disconnect( op, rs );
 962                         rs->sr_err = SLAPD_DISCONNECT;
 963                 } else {
 964                         send_ldap_result( op, rs );
 965                 }
 966                 if( op->o_assertion != NULL ) {
 967                         filter_free_x( op, op->o_assertion );
 968                 }
 969                 return rs->sr_err;
 970         }
 971
 972 #ifdef LDAP_DEBUG
 973         filter2bv_x( op, op->o_assertion, &fstr );
 974
 975         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 976                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 977         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 978 #endif
 979
 980         op->o_assert = ctrl->ldctl_iscritical
 981                 ? SLAP_CONTROL_CRITICAL
 982                 : SLAP_CONTROL_NONCRITICAL;
 983
 984         rs->sr_err = LDAP_SUCCESS;
 985         return LDAP_SUCCESS;
 986 }
 987
 988 static int parsePreRead (
 989         Operation *op,
 990         SlapReply *rs,
 991         LDAPControl *ctrl )
 992 {
 993         ber_len_t siz, off, i;
 994         AttributeName *an = NULL;
 995         BerElement      *ber;
 996
 997         if ( op->o_preread != SLAP_CONTROL_NONE ) {
 998                 rs->sr_text = "preread control specified multiple times";
 999                 return LDAP_PROTOCOL_ERROR;
1000         }
1001
1002         if ( ctrl->ldctl_value.bv_len == 0 ) {
1003                 rs->sr_text = "preread control value is empty (or absent)";
1004                 return LDAP_PROTOCOL_ERROR;
1005         }
1006
1007         ber = ber_init( &(ctrl->ldctl_value) );
1008         if (ber == NULL) {
1009                 rs->sr_text = "preread control: internal error";
1010                 return LDAP_OTHER;
1011         }
1012
1013         siz = sizeof( AttributeName );
1014         off = offsetof( AttributeName, an_name );
1015         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1016                 rs->sr_text = "preread control: decoding error";
1017                 return LDAP_PROTOCOL_ERROR;
1018         }
1019
1020         for( i=0; i<siz; i++ ) {
1021                 int             rc = LDAP_SUCCESS;
1022                 const char      *dummy = NULL;
1023
1024                 an[i].an_desc = NULL;
1025                 an[i].an_oc = NULL;
1026                 an[i].an_oc_exclude = 0;
1027                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1028                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1029                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1030                         return rc;
1031                 }
1032         }
1033
1034         op->o_preread = ctrl->ldctl_iscritical
1035                 ? SLAP_CONTROL_CRITICAL
1036                 : SLAP_CONTROL_NONCRITICAL;
1037
1038         op->o_preread_attrs = an;
1039
1040         rs->sr_err = LDAP_SUCCESS;
1041         return LDAP_SUCCESS;
1042 }
1043
1044 static int parsePostRead (
1045         Operation *op,
1046         SlapReply *rs,
1047         LDAPControl *ctrl )
1048 {
1049         ber_len_t siz, off, i;
1050         AttributeName *an = NULL;
1051         BerElement      *ber;
1052
1053         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1054                 rs->sr_text = "postread control specified multiple times";
1055                 return LDAP_PROTOCOL_ERROR;
1056         }
1057
1058         if ( ctrl->ldctl_value.bv_len == 0 ) {
1059                 rs->sr_text = "postread control value is empty (or absent)";
1060                 return LDAP_PROTOCOL_ERROR;
1061         }
1062
1063         ber = ber_init( &(ctrl->ldctl_value) );
1064         if (ber == NULL) {
1065                 rs->sr_text = "postread control: internal error";
1066                 return LDAP_OTHER;
1067         }
1068
1069         siz = sizeof( AttributeName );
1070         off = offsetof( AttributeName, an_name );
1071         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1072                 rs->sr_text = "postread control: decoding error";
1073                 return LDAP_PROTOCOL_ERROR;
1074         }
1075
1076         for( i=0; i<siz; i++ ) {
1077                 int             rc = LDAP_SUCCESS;
1078                 const char      *dummy = NULL;
1079
1080                 an[i].an_desc = NULL;
1081                 an[i].an_oc = NULL;
1082                 an[i].an_oc_exclude = 0;
1083                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1084                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1085                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1086                         return rc;
1087                 }
1088         }
1089
1090         op->o_postread = ctrl->ldctl_iscritical
1091                 ? SLAP_CONTROL_CRITICAL
1092                 : SLAP_CONTROL_NONCRITICAL;
1093
1094         op->o_postread_attrs = an;
1095
1096         rs->sr_err = LDAP_SUCCESS;
1097         return LDAP_SUCCESS;
1098 }
1099
1100 int parseValuesReturnFilter (
1101         Operation *op,
1102         SlapReply *rs,
1103         LDAPControl *ctrl )
1104 {
1105         BerElement      *ber;
1106         struct berval   fstr = BER_BVNULL;
1107         const char *err_msg = "";
1108
1109         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1110                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1111                 return LDAP_PROTOCOL_ERROR;
1112         }
1113
1114         if ( ctrl->ldctl_value.bv_len == 0 ) {
1115                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1116                 return LDAP_PROTOCOL_ERROR;
1117         }
1118
1119         ber = ber_init( &(ctrl->ldctl_value) );
1120         if (ber == NULL) {
1121                 rs->sr_text = "internal error";
1122                 return LDAP_OTHER;
1123         }
1124
1125         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1126
1127         if( rs->sr_err != LDAP_SUCCESS ) {
1128                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1129                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1130                         send_ldap_disconnect( op, rs );
1131                         rs->sr_err = SLAPD_DISCONNECT;
1132                 } else {
1133                         send_ldap_result( op, rs );
1134                 }
1135                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1136         }
1137 #ifdef LDAP_DEBUG
1138         else {
1139                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1140         }
1141
1142         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1143                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1144         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1145 #endif
1146
1147         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1148                 ? SLAP_CONTROL_CRITICAL
1149                 : SLAP_CONTROL_NONCRITICAL;
1150
1151         rs->sr_err = LDAP_SUCCESS;
1152         return LDAP_SUCCESS;
1153 }
1154
1155 #ifdef LDAP_CONTROL_SUBENTRIES
1156 static int parseSubentries (
1157         Operation *op,
1158         SlapReply *rs,
1159         LDAPControl *ctrl )
1160 {
1161         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1162                 rs->sr_text = "subentries control specified multiple times";
1163                 return LDAP_PROTOCOL_ERROR;
1164         }
1165
1166         /* FIXME: should use BER library */
1167         if( ( ctrl->ldctl_value.bv_len != 3 )
1168                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1169                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1170         {
1171                 rs->sr_text = "subentries control value encoding is bogus";
1172                 return LDAP_PROTOCOL_ERROR;
1173         }
1174
1175         op->o_subentries = ctrl->ldctl_iscritical
1176                 ? SLAP_CONTROL_CRITICAL
1177                 : SLAP_CONTROL_NONCRITICAL;
1178
1179         if ( (void *)(ctrl->ldctl_value.bv_val[2] != 0x00))
1180                 set_subentries_visibility( op );
1181
1182         return LDAP_SUCCESS;
1183 }
1184 #endif
1185
1186 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1187 static int parsePermissiveModify (
1188         Operation *op,
1189         SlapReply *rs,
1190         LDAPControl *ctrl )
1191 {
1192         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1193                 rs->sr_text = "permissiveModify control specified multiple times";
1194                 return LDAP_PROTOCOL_ERROR;
1195         }
1196
1197         if ( ctrl->ldctl_value.bv_len ) {
1198                 rs->sr_text = "permissiveModify control value not empty";
1199                 return LDAP_PROTOCOL_ERROR;
1200         }
1201
1202         op->o_permissive_modify = ctrl->ldctl_iscritical
1203                 ? SLAP_CONTROL_CRITICAL
1204                 : SLAP_CONTROL_NONCRITICAL;
1205
1206         return LDAP_SUCCESS;
1207 }
1208 #endif
1209
1210 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1211 static int parseDomainScope (
1212         Operation *op,
1213         SlapReply *rs,
1214         LDAPControl *ctrl )
1215 {
1216         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1217                 rs->sr_text = "domainScope control specified multiple times";
1218                 return LDAP_PROTOCOL_ERROR;
1219         }
1220
1221         if ( ctrl->ldctl_value.bv_len ) {
1222                 rs->sr_text = "domainScope control value not empty";
1223                 return LDAP_PROTOCOL_ERROR;
1224         }
1225
1226         op->o_domain_scope = ctrl->ldctl_iscritical
1227                 ? SLAP_CONTROL_CRITICAL
1228                 : SLAP_CONTROL_NONCRITICAL;
1229
1230         return LDAP_SUCCESS;
1231 }
1232 #endif
1233
1234 #ifdef LDAP_CONTROL_X_TREE_DELETE
1235 static int parseTreeDelete (
1236         Operation *op,
1237         SlapReply *rs,
1238         LDAPControl *ctrl )
1239 {
1240         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1241                 rs->sr_text = "treeDelete control specified multiple times";
1242                 return LDAP_PROTOCOL_ERROR;
1243         }
1244
1245         if ( ctrl->ldctl_value.bv_len ) {
1246                 rs->sr_text = "treeDelete control value not empty";
1247                 return LDAP_PROTOCOL_ERROR;
1248         }
1249
1250         op->o_tree_delete = ctrl->ldctl_iscritical
1251                 ? SLAP_CONTROL_CRITICAL
1252                 : SLAP_CONTROL_NONCRITICAL;
1253
1254         return LDAP_SUCCESS;
1255 }
1256 #endif
1257
1258 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1259 static int parseSearchOptions (
1260         Operation *op,
1261         SlapReply *rs,
1262         LDAPControl *ctrl )
1263 {
1264         BerElement *ber;
1265         ber_int_t search_flags;
1266
1267         if ( ctrl->ldctl_value.bv_len == 0 ) {
1268                 rs->sr_text = "searchOptions control value not empty";
1269                 return LDAP_PROTOCOL_ERROR;
1270         }
1271
1272         ber = ber_init( &ctrl->ldctl_value );
1273         if( ber == NULL ) {
1274                 rs->sr_text = "internal error";
1275                 return LDAP_OTHER;
1276         }
1277
1278         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1279                 rs->sr_text = "searchOptions control decoding error";
1280                 return LDAP_PROTOCOL_ERROR;
1281         }
1282
1283         (void) ber_free( ber, 1 );
1284
1285         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1286                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1287                         rs->sr_text = "searchOptions control specified multiple times "
1288                                 "or with domainScope control";
1289                         return LDAP_PROTOCOL_ERROR;
1290                 }
1291
1292                 op->o_domain_scope = ctrl->ldctl_iscritical
1293                         ? SLAP_CONTROL_CRITICAL
1294                         : SLAP_CONTROL_NONCRITICAL;
1295         }
1296
1297         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1298                 /* Other search flags not recognised so far */
1299                 rs->sr_text = "searchOptions contained unrecongized flag";
1300                 return LDAP_UNWILLING_TO_PERFORM;
1301         }
1302
1303         return LDAP_SUCCESS;
1304 }
1305 #endif
1306
1307 static int parseLDAPsync (
1308         Operation *op,
1309         SlapReply *rs,
1310         LDAPControl *ctrl )
1311 {
1312         ber_tag_t tag;
1313         BerElement *ber;
1314         ber_int_t mode;
1315         ber_len_t len;
1316         struct slap_session_entry *se;
1317
1318         if ( op->o_sync != SLAP_CONTROL_NONE ) {
1319                 rs->sr_text = "Sync control specified multiple times";
1320                 return LDAP_PROTOCOL_ERROR;
1321         }
1322
1323         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1324                 rs->sr_text = "Sync control specified with pagedResults control";
1325                 return LDAP_PROTOCOL_ERROR;
1326         }
1327
1328
1329         if ( ctrl->ldctl_value.bv_len == 0 ) {
1330                 rs->sr_text = "Sync control value is empty (or absent)";
1331                 return LDAP_PROTOCOL_ERROR;
1332         }
1333
1334         /* Parse the control value
1335          *      syncRequestValue ::= SEQUENCE {
1336          *              mode   ENUMERATED {
1337          *                      -- 0 unused
1338          *                      refreshOnly             (1),
1339          *                      -- 2 reserved
1340          *                      refreshAndPersist       (3)
1341          *              },
1342          *              cookie  syncCookie OPTIONAL
1343          *      }
1344          */
1345
1346         ber = ber_init( &ctrl->ldctl_value );
1347         if( ber == NULL ) {
1348                 rs->sr_text = "internal error";
1349                 return LDAP_OTHER;
1350         }
1351
1352         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1353                 rs->sr_text = "Sync control : mode decoding error";
1354                 return LDAP_PROTOCOL_ERROR;
1355         }
1356
1357         switch( mode ) {
1358         case LDAP_SYNC_REFRESH_ONLY:
1359                 mode = SLAP_SYNC_REFRESH;
1360                 break;
1361         case LDAP_SYNC_REFRESH_AND_PERSIST:
1362                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1363                 break;
1364         default:
1365                 rs->sr_text = "Sync control : unknown update mode";
1366                 return LDAP_PROTOCOL_ERROR;
1367         }
1368
1369         tag = ber_peek_tag( ber, &len );
1370
1371         if ( tag == LDAP_TAG_SYNC_COOKIE ) {
1372                 struct berval tmp_bv;
1373                 if (( ber_scanf( ber, /*{*/ "o", &tmp_bv )) == LBER_ERROR ) {
1374                         rs->sr_text = "Sync control : cookie decoding error";
1375                         return LDAP_PROTOCOL_ERROR;
1376                 }
1377                 ber_bvarray_add( &op->o_sync_state.octet_str, &tmp_bv );
1378                 slap_parse_sync_cookie( &op->o_sync_state );
1379         }
1380         if ( tag == LDAP_TAG_RELOAD_HINT ) {
1381                 if (( ber_scanf( ber, /*{*/ "b", &op->o_sync_rhint )) == LBER_ERROR ) {
1382                         rs->sr_text = "Sync control : rhint decoding error";
1383                         return LDAP_PROTOCOL_ERROR;
1384                 }
1385         }
1386         if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1387                         rs->sr_text = "Sync control : decoding error";
1388                         return LDAP_PROTOCOL_ERROR;
1389         }
1390
1391         (void) ber_free( ber, 1 );
1392
1393         op->o_sync_mode = (char) mode;
1394
1395         op->o_sync = ctrl->ldctl_iscritical
1396                 ? SLAP_CONTROL_CRITICAL
1397                 : SLAP_CONTROL_NONCRITICAL;
1398
1399         return LDAP_SUCCESS;
1400 }