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 1998-2005 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 #ifdef LDAP_DEVEL
  32 static SLAP_CTRL_PARSE_FN parseManageDIT;
  33 #endif
  34 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  35 static SLAP_CTRL_PARSE_FN parseNoOp;
  36 static SLAP_CTRL_PARSE_FN parsePagedResults;
  37 #ifdef LDAP_DEVEL
  38 static SLAP_CTRL_PARSE_FN parseSortedResults;
  39 #endif
  40 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  41 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  42 static SLAP_CTRL_PARSE_FN parseDomainScope;
  43 #ifdef SLAP_CONTROL_X_TREE_DELETE
  44 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  45 #endif
  46 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  47 static SLAP_CTRL_PARSE_FN parseSubentries;
  48
  49 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  50
  51 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  52 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  53
  54 struct slap_control_ids slap_cids;
  55
  56 struct slap_control {
  57         /* Control OID */
  58         char *sc_oid;
  59
  60         /* The controlID for this control */
  61         int sc_cid;
  62
  63         /* Operations supported by control */
  64         slap_mask_t sc_mask;
  65
  66         /* Extended operations supported by control */
  67         char **sc_extendedops;
  68
  69         /* Control parsing callback */
  70         SLAP_CTRL_PARSE_FN *sc_parse;
  71
  72         LDAP_SLIST_ENTRY(slap_control) sc_next;
  73 };
  74
  75 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  76         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  77
  78 /*
  79  * all known request control OIDs should be added to this list
  80  */
  81 /*
  82  * NOTE: initialize num_known_controls to 1 so that cid = 0 always
  83  * addresses an undefined control; this allows to safely test for
  84  * well known controls even if they are not registered, e.g. if
  85  * they get moved to modules.  An example is sc_LDAPsync, which
  86  * is implemented in the syncprov overlay and thus, if configured
  87  * as dynamic module, may not be registered.  One side effect is that
  88  * slap_known_controls[0] == NULL, so it should always be used
  89  * starting from 1.
  90  * FIXME: should we define the "undefined control" oid?
  91  */
  92 char *slap_known_controls[SLAP_MAX_CIDS+1];
  93 static int num_known_controls = 1;
  94
  95 static char *proxy_authz_extops[] = {
  96         LDAP_EXOP_MODIFY_PASSWD,
  97         LDAP_EXOP_X_WHO_AM_I,
  98         NULL
  99 };
 100
 101 static struct slap_control control_defs[] = {
 102         {  LDAP_CONTROL_ASSERT,
 103                 (int)offsetof(struct slap_control_ids, sc_assert),
 104                 SLAP_CTRL_ACCESS, NULL,
 105                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 106         { LDAP_CONTROL_PRE_READ,
 107                 (int)offsetof(struct slap_control_ids, sc_preRead),
 108                 SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 109                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 110         { LDAP_CONTROL_POST_READ,
 111                 (int)offsetof(struct slap_control_ids, sc_postRead),
 112                 SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
 113                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 114         { LDAP_CONTROL_VALUESRETURNFILTER,
 115                 (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
 116                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 117                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 118         { LDAP_CONTROL_PAGEDRESULTS,
 119                 (int)offsetof(struct slap_control_ids, sc_pagedResults),
 120                 SLAP_CTRL_SEARCH, NULL,
 121                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 122 #ifdef LDAP_DEVEL
 123         { LDAP_CONTROL_SORTREQUEST,
 124                 (int)offsetof(struct slap_control_ids, sc_sortedResults),
 125                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
 126                 parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 127 #endif
 128 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 129         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 130                 (int)offsetof(struct slap_control_ids, sc_domainScope),
 131                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 132                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 133 #endif
 134 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 135         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 136                 (int)offsetof(struct slap_control_ids, sc_permissiveModify),
 137                 SLAP_CTRL_MODIFY, NULL,
 138                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 139 #endif
 140 #ifdef SLAP_CONTROL_X_TREE_DELETE
 141         { LDAP_CONTROL_X_TREE_DELETE,
 142                 (int)offsetof(struct slap_control_ids, sc_treeDelete),
 143                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE, NULL,
 144                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 145 #endif
 146 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
 147         { LDAP_CONTROL_X_SEARCH_OPTIONS,
 148                 (int)offsetof(struct slap_control_ids, sc_searchOptions),
 149                 SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
 150                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 151 #endif
 152 #ifdef LDAP_CONTROL_SUBENTRIES
 153         { LDAP_CONTROL_SUBENTRIES,
 154                 (int)offsetof(struct slap_control_ids, sc_subentries),
 155                 SLAP_CTRL_SEARCH, NULL,
 156                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 157 #endif
 158         { LDAP_CONTROL_NOOP,
 159                 (int)offsetof(struct slap_control_ids, sc_noOp),
 160                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 161                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 162 #ifdef LDAP_DEVEL
 163         { LDAP_CONTROL_MANAGEDIT,
 164                 (int)offsetof(struct slap_control_ids, sc_manageDIT),
 165                 SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE|SLAP_CTRL_HIDE, NULL,
 166                 parseManageDIT, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 167 #endif
 168         { LDAP_CONTROL_MANAGEDSAIT,
 169                 (int)offsetof(struct slap_control_ids, sc_manageDSAit),
 170                 SLAP_CTRL_ACCESS, NULL,
 171                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 172         { LDAP_CONTROL_PROXY_AUTHZ,
 173                 (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
 174                 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
 175                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 176         { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 177 };
 178
 179 /*
 180  * Register a supported control.
 181  *
 182  * This can be called by an OpenLDAP plugin or, indirectly, by a
 183  * SLAPI plugin calling slapi_register_supported_control().
 184  */
 185 int
 186 register_supported_control(const char *controloid,
 187         slap_mask_t controlmask,
 188         char **controlexops,
 189         SLAP_CTRL_PARSE_FN *controlparsefn,
 190         int *controlcid)
 191 {
 192         struct slap_control *sc;
 193         int i;
 194
 195         if ( num_known_controls >= SLAP_MAX_CIDS ) {
 196                 Debug( LDAP_DEBUG_ANY, "Too many controls registered."
 197                         " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
 198                 SLAP_MAX_CIDS, 0, 0 );
 199                 return LDAP_OTHER;
 200         }
 201
 202         if ( controloid == NULL ) return LDAP_PARAM_ERROR;
 203
 204         /* sanity check - should never happen */
 205         for ( i = 0; slap_known_controls[ i ]; i++ ) {
 206                 if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
 207                         Debug( LDAP_DEBUG_ANY,
 208                                 "Control %s already registered.\n",
 209                                 controloid, 0, 0 );
 210                         return LDAP_PARAM_ERROR;
 211                 }
 212         }
 213
 214         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 215         if ( sc == NULL ) return LDAP_NO_MEMORY;
 216
 217         sc->sc_oid = ch_strdup( controloid );
 218         sc->sc_mask = controlmask;
 219         if ( controlexops != NULL ) {
 220                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 221                 if ( sc->sc_extendedops == NULL ) {
 222                         ch_free( sc );
 223                         return LDAP_NO_MEMORY;
 224                 }
 225         } else {
 226                 sc->sc_extendedops = NULL;
 227         }
 228         sc->sc_parse = controlparsefn;
 229
 230         if ( controlcid ) *controlcid = num_known_controls;
 231         sc->sc_cid = num_known_controls;
 232
 233         /* Update slap_known_controls, too. */
 234         slap_known_controls[num_known_controls-1] = sc->sc_oid;
 235         slap_known_controls[num_known_controls++] = NULL;
 236
 237         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 238         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 239         return LDAP_SUCCESS;
 240 }
 241
 242 /*
 243  * One-time initialization of internal controls.
 244  */
 245 int
 246 slap_controls_init( void )
 247 {
 248         int i, rc;
 249
 250         rc = LDAP_SUCCESS;
 251
 252         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 253                 int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
 254                 rc = register_supported_control( control_defs[i].sc_oid,
 255                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 256                         control_defs[i].sc_parse, cid );
 257                 if ( rc != LDAP_SUCCESS ) break;
 258         }
 259
 260         return rc;
 261 }
 262
 263 /*
 264  * Free memory associated with list of supported controls.
 265  */
 266 void
 267 controls_destroy( void )
 268 {
 269         struct slap_control *sc;
 270
 271         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 272                 sc = LDAP_SLIST_FIRST(&controls_list);
 273                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 274
 275                 ch_free( sc->sc_oid );
 276                 if ( sc->sc_extendedops != NULL ) {
 277                         ldap_charray_free( sc->sc_extendedops );
 278                 }
 279                 ch_free( sc );
 280         }
 281 }
 282
 283 /*
 284  * Format the supportedControl attribute of the root DSE,
 285  * detailing which controls are supported by the directory
 286  * server.
 287  */
 288 int
 289 controls_root_dse_info( Entry *e )
 290 {
 291         AttributeDescription *ad_supportedControl
 292                 = slap_schema.si_ad_supportedControl;
 293         struct berval vals[2];
 294         struct slap_control *sc;
 295
 296         vals[1].bv_val = NULL;
 297         vals[1].bv_len = 0;
 298
 299         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 300                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 301
 302                 vals[0].bv_val = sc->sc_oid;
 303                 vals[0].bv_len = strlen( sc->sc_oid );
 304
 305                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 306                         return -1;
 307                 }
 308         }
 309
 310         return 0;
 311 }
 312
 313 /*
 314  * Return a list of OIDs and operation masks for supported
 315  * controls. Used by SLAPI.
 316  */
 317 int
 318 get_supported_controls(char ***ctrloidsp,
 319         slap_mask_t **ctrlmasks)
 320 {
 321         int n;
 322         char **oids;
 323         slap_mask_t *masks;
 324         struct slap_control *sc;
 325
 326         n = 0;
 327
 328         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 329                 n++;
 330         }
 331
 332         if ( n == 0 ) {
 333                 *ctrloidsp = NULL;
 334                 *ctrlmasks = NULL;
 335                 return LDAP_SUCCESS;
 336         }
 337
 338         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 339         if ( oids == NULL ) {
 340                 return LDAP_NO_MEMORY;
 341         }
 342         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 343         if  ( masks == NULL ) {
 344                 ch_free( oids );
 345                 return LDAP_NO_MEMORY;
 346         }
 347
 348         n = 0;
 349
 350         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 351                 oids[n] = ch_strdup( sc->sc_oid );
 352                 masks[n] = sc->sc_mask;
 353                 n++;
 354         }
 355         oids[n] = NULL;
 356         masks[n] = 0;
 357
 358         *ctrloidsp = oids;
 359         *ctrlmasks = masks;
 360
 361         return LDAP_SUCCESS;
 362 }
 363
 364 /*
 365  * Find a control given its OID.
 366  */
 367 static struct slap_control *
 368 find_ctrl( const char *oid )
 369 {
 370         struct slap_control *sc;
 371
 372         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 373                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 374                         return sc;
 375                 }
 376         }
 377
 378         return NULL;
 379 }
 380
 381 int
 382 slap_find_control_id(
 383         const char *oid,
 384         int *cid )
 385 {
 386         struct slap_control *ctrl = find_ctrl( oid );
 387         if ( ctrl ) {
 388                 if ( cid ) *cid = ctrl->sc_cid;
 389                 return LDAP_SUCCESS;
 390         }
 391         return LDAP_CONTROL_NOT_FOUND;
 392 }
 393
 394 int
 395 slap_global_control( Operation *op, const char *oid, int *cid )
 396 {
 397         struct slap_control *ctrl = find_ctrl( oid );
 398
 399         if ( ctrl == NULL ) {
 400                 /* should not be reachable */
 401                 Debug( LDAP_DEBUG_ANY,
 402                         "slap_global_control: unrecognized control: %s\n",
 403                         oid, 0, 0 );
 404                 return LDAP_CONTROL_NOT_FOUND;
 405         }
 406
 407         if ( cid ) *cid = ctrl->sc_cid;
 408
 409         if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
 410                 ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
 411                 ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
 412         {
 413                 return LDAP_COMPARE_TRUE;
 414         }
 415
 416         Debug( LDAP_DEBUG_TRACE,
 417                 "slap_global_control: unavailable control: %s\n",
 418                 oid, 0, 0 );
 419
 420         return LDAP_COMPARE_FALSE;
 421 }
 422
 423 void slap_free_ctrls(
 424         Operation *op,
 425         LDAPControl **ctrls )
 426 {
 427         int i;
 428
 429         for (i=0; ctrls[i]; i++) {
 430                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 431         }
 432         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 433 }
 434
 435 int slap_parse_ctrl(
 436         Operation *op,
 437         SlapReply *rs,
 438         LDAPControl *control,
 439         const char **text )
 440 {
 441         struct slap_control *sc;
 442
 443         sc = find_ctrl( control->ldctl_oid );
 444         if( sc != NULL ) {
 445                 /* recognized control */
 446                 slap_mask_t tagmask;
 447                 switch( op->o_tag ) {
 448                 case LDAP_REQ_ADD:
 449                         tagmask = SLAP_CTRL_ADD;
 450                         break;
 451                 case LDAP_REQ_BIND:
 452                         tagmask = SLAP_CTRL_BIND;
 453                         break;
 454                 case LDAP_REQ_COMPARE:
 455                         tagmask = SLAP_CTRL_COMPARE;
 456                         break;
 457                 case LDAP_REQ_DELETE:
 458                         tagmask = SLAP_CTRL_DELETE;
 459                         break;
 460                 case LDAP_REQ_MODIFY:
 461                         tagmask = SLAP_CTRL_MODIFY;
 462                         break;
 463                 case LDAP_REQ_RENAME:
 464                         tagmask = SLAP_CTRL_RENAME;
 465                         break;
 466                 case LDAP_REQ_SEARCH:
 467                         tagmask = SLAP_CTRL_SEARCH;
 468                         break;
 469                 case LDAP_REQ_UNBIND:
 470                         tagmask = SLAP_CTRL_UNBIND;
 471                         break;
 472                 case LDAP_REQ_ABANDON:
 473                         tagmask = SLAP_CTRL_ABANDON;
 474                         break;
 475                 case LDAP_REQ_EXTENDED:
 476                         tagmask=~0L;
 477                         assert( op->ore_reqoid.bv_val != NULL );
 478                         if( sc->sc_extendedops != NULL ) {
 479                                 int i;
 480                                 for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 481                                         if( strcmp( op->ore_reqoid.bv_val,
 482                                                 sc->sc_extendedops[i] ) == 0 )
 483                                         {
 484                                                 tagmask=0L;
 485                                                 break;
 486                                         }
 487                                 }
 488                         }
 489                         break;
 490                 default:
 491                         *text = "controls internal error";
 492                         return LDAP_OTHER;
 493                 }
 494
 495                 if (( sc->sc_mask & tagmask ) == tagmask ) {
 496                         /* available extension */
 497                         int     rc;
 498
 499                         if( !sc->sc_parse ) {
 500                                 *text = "not yet implemented";
 501                                 return LDAP_OTHER;
 502                         }
 503
 504                         rc = sc->sc_parse( op, rs, control );
 505                         if ( rc ) {
 506                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 507                                 return rc;
 508                         }
 509
 510                 } else if( control->ldctl_iscritical ) {
 511                         /* unavailable CRITICAL control */
 512                         *text = "critical extension is unavailable";
 513                         return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 514                 }
 515         } else if( control->ldctl_iscritical ) {
 516                 /* unrecognized CRITICAL control */
 517                 *text = "critical extension is not recognized";
 518                 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 519         }
 520
 521         return LDAP_SUCCESS;
 522 }
 523
 524 int get_ctrls(
 525         Operation *op,
 526         SlapReply *rs,
 527         int sendres )
 528 {
 529         int nctrls = 0;
 530         ber_tag_t tag;
 531         ber_len_t len;
 532         char *opaque;
 533         BerElement *ber = op->o_ber;
 534         struct berval bv;
 535
 536         len = ber_pvt_ber_remaining(ber);
 537
 538         if( len == 0) {
 539                 /* no controls */
 540                 rs->sr_err = LDAP_SUCCESS;
 541                 return rs->sr_err;
 542         }
 543
 544         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 545                 if( tag == LBER_ERROR ) {
 546                         rs->sr_err = SLAPD_DISCONNECT;
 547                         rs->sr_text = "unexpected data in PDU";
 548                 }
 549
 550                 goto return_results;
 551         }
 552
 553         Debug( LDAP_DEBUG_TRACE,
 554                 "=> get_ctrls\n", 0, 0, 0 );
 555
 556         if( op->o_protocol < LDAP_VERSION3 ) {
 557                 rs->sr_err = SLAPD_DISCONNECT;
 558                 rs->sr_text = "controls require LDAPv3";
 559                 goto return_results;
 560         }
 561
 562         /* one for first control, one for termination */
 563         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 564
 565 #if 0
 566         if( op->ctrls == NULL ) {
 567                 rs->sr_err = LDAP_NO_MEMORY;
 568                 rs->sr_text = "no memory";
 569                 goto return_results;
 570         }
 571 #endif
 572
 573         op->o_ctrls[nctrls] = NULL;
 574
 575         /* step through each element */
 576         for( tag = ber_first_element( ber, &len, &opaque );
 577                 tag != LBER_ERROR;
 578                 tag = ber_next_element( ber, &len, opaque ) )
 579         {
 580                 LDAPControl *c;
 581                 LDAPControl **tctrls;
 582
 583                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 584                 memset(c, 0, sizeof(LDAPControl));
 585
 586                 /* allocate pointer space for current controls (nctrls)
 587                  * + this control + extra NULL
 588                  */
 589                 tctrls = op->o_tmprealloc( op->o_ctrls,
 590                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 591
 592 #if 0
 593                 if( tctrls == NULL ) {
 594                         ch_free( c );
 595                         ldap_controls_free(op->o_ctrls);
 596                         op->o_ctrls = NULL;
 597
 598                         rs->sr_err = LDAP_NO_MEMORY;
 599                         rs->sr_text = "no memory";
 600                         goto return_results;
 601                 }
 602 #endif
 603                 op->o_ctrls = tctrls;
 604
 605                 op->o_ctrls[nctrls++] = c;
 606                 op->o_ctrls[nctrls] = NULL;
 607
 608                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 609                 c->ldctl_oid = bv.bv_val;
 610
 611                 if( tag == LBER_ERROR ) {
 612                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 613                                 0, 0, 0 );
 614
 615                         slap_free_ctrls( op, op->o_ctrls );
 616                         op->o_ctrls = NULL;
 617                         rs->sr_err = SLAPD_DISCONNECT;
 618                         rs->sr_text = "decoding controls error";
 619                         goto return_results;
 620
 621                 } else if( c->ldctl_oid == NULL ) {
 622                         Debug( LDAP_DEBUG_TRACE,
 623                                 "get_ctrls: conn %lu got emtpy OID.\n",
 624                                 op->o_connid, 0, 0 );
 625
 626                         slap_free_ctrls( op, op->o_ctrls );
 627                         op->o_ctrls = NULL;
 628                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 629                         rs->sr_text = "OID field is empty";
 630                         goto return_results;
 631                 }
 632
 633                 tag = ber_peek_tag( ber, &len );
 634
 635                 if( tag == LBER_BOOLEAN ) {
 636                         ber_int_t crit;
 637                         tag = ber_scanf( ber, "b", &crit );
 638
 639                         if( tag == LBER_ERROR ) {
 640                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 641                                         0, 0, 0 );
 642                                 slap_free_ctrls( op, op->o_ctrls );
 643                                 op->o_ctrls = NULL;
 644                                 rs->sr_err = SLAPD_DISCONNECT;
 645                                 rs->sr_text = "decoding controls error";
 646                                 goto return_results;
 647                         }
 648
 649                         c->ldctl_iscritical = (crit != 0);
 650                         tag = ber_peek_tag( ber, &len );
 651                 }
 652
 653                 if( tag == LBER_OCTETSTRING ) {
 654                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 655
 656                         if( tag == LBER_ERROR ) {
 657                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 658                                         "%s (%scritical): get value failed.\n",
 659                                         op->o_connid, c->ldctl_oid,
 660                                         c->ldctl_iscritical ? "" : "non" );
 661                                 slap_free_ctrls( op, op->o_ctrls );
 662                                 op->o_ctrls = NULL;
 663                                 rs->sr_err = SLAPD_DISCONNECT;
 664                                 rs->sr_text = "decoding controls error";
 665                                 goto return_results;
 666                         }
 667                 }
 668
 669                 Debug( LDAP_DEBUG_TRACE,
 670                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 671                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 672
 673                 rs->sr_err = slap_parse_ctrl( op, rs, c, &rs->sr_text );
 674                 if ( rs->sr_err != LDAP_SUCCESS ) {
 675                         goto return_results;
 676                 }
 677         }
 678
 679 return_results:
 680         Debug( LDAP_DEBUG_TRACE,
 681                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 682                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 683
 684         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 685                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 686                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 687                         send_ldap_disconnect( op, rs );
 688                         rs->sr_err = SLAPD_DISCONNECT;
 689                 } else {
 690                         send_ldap_result( op, rs );
 691                 }
 692         }
 693
 694         return rs->sr_err;
 695 }
 696
 697 int
 698 slap_remove_control(
 699         Operation       *op,
 700         SlapReply       *rs,
 701         int             ctrl,
 702         BI_chk_controls fnc )
 703 {
 704         int             i, j;
 705
 706         switch ( op->o_ctrlflag[ ctrl ] ) {
 707         case SLAP_CONTROL_NONCRITICAL:
 708                 for ( i = 0, j = -1; op->o_ctrls[ i ] != NULL; i++ ) {
 709                         if ( strcmp( op->o_ctrls[ i ]->ldctl_oid, slap_known_controls[ ctrl - 1 ] ) == 0 )
 710                         {
 711                                 j = i;
 712                         }
 713                 }
 714
 715                 if ( j == -1 ) {
 716                         rs->sr_err = LDAP_OTHER;
 717                         break;
 718                 }
 719
 720                 if ( fnc ) {
 721                         (void)fnc( op, rs );
 722                 }
 723
 724                 op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
 725
 726                 if ( i > 1 ) {
 727                         AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 ],
 728                                 ( i - j ) * sizeof( LDAPControl * ) );
 729
 730                 } else {
 731                         op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
 732                         op->o_ctrls = NULL;
 733                 }
 734
 735                 op->o_ctrlflag[ ctrl ] = SLAP_CONTROL_IGNORED;
 736
 737                 Debug( LDAP_DEBUG_ANY, "%s: "
 738                         "non-critical control \"%s\" not supported; stripped.\n",
 739                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 740                 /* fall thru */
 741
 742         case SLAP_CONTROL_IGNORED:
 743         case SLAP_CONTROL_NONE:
 744                 rs->sr_err = SLAP_CB_CONTINUE;
 745                 break;
 746
 747         case SLAP_CONTROL_CRITICAL:
 748                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 749                 if ( fnc ) {
 750                         (void)fnc( op, rs );
 751                 }
 752                 Debug( LDAP_DEBUG_ANY, "%s: "
 753                         "critical control \"%s\" not supported.\n",
 754                         op->o_log_prefix, slap_known_controls[ ctrl ], 0 );
 755                 break;
 756
 757         default:
 758                 /* handle all cases! */
 759                 assert( 0 );
 760         }
 761
 762         return rs->sr_err;
 763 }
 764
 765 #ifdef LDAP_DEVEL
 766 static int parseManageDIT (
 767         Operation *op,
 768         SlapReply *rs,
 769         LDAPControl *ctrl )
 770 {
 771         if ( op->o_managedit != SLAP_CONTROL_NONE ) {
 772                 rs->sr_text = "manageDIT control specified multiple times";
 773                 return LDAP_PROTOCOL_ERROR;
 774         }
 775
 776         if ( ctrl->ldctl_value.bv_len ) {
 777                 rs->sr_text = "manageDIT control value not empty";
 778                 return LDAP_PROTOCOL_ERROR;
 779         }
 780
 781         op->o_managedit = ctrl->ldctl_iscritical
 782                 ? SLAP_CONTROL_CRITICAL
 783                 : SLAP_CONTROL_NONCRITICAL;
 784
 785         return LDAP_SUCCESS;
 786 }
 787 #endif
 788
 789 static int parseManageDSAit (
 790         Operation *op,
 791         SlapReply *rs,
 792         LDAPControl *ctrl )
 793 {
 794         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 795                 rs->sr_text = "manageDSAit control specified multiple times";
 796                 return LDAP_PROTOCOL_ERROR;
 797         }
 798
 799         if ( ctrl->ldctl_value.bv_len ) {
 800                 rs->sr_text = "manageDSAit control value not empty";
 801                 return LDAP_PROTOCOL_ERROR;
 802         }
 803
 804         op->o_managedsait = ctrl->ldctl_iscritical
 805                 ? SLAP_CONTROL_CRITICAL
 806                 : SLAP_CONTROL_NONCRITICAL;
 807
 808         return LDAP_SUCCESS;
 809 }
 810
 811 static int parseProxyAuthz (
 812         Operation *op,
 813         SlapReply *rs,
 814         LDAPControl *ctrl )
 815 {
 816         int             rc;
 817         struct berval   dn = BER_BVNULL;
 818
 819         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 820                 rs->sr_text = "proxy authorization control specified multiple times";
 821                 return LDAP_PROTOCOL_ERROR;
 822         }
 823
 824         op->o_proxy_authz = ctrl->ldctl_iscritical
 825                 ? SLAP_CONTROL_CRITICAL
 826                 : SLAP_CONTROL_NONCRITICAL;
 827
 828         Debug( LDAP_DEBUG_ARGS,
 829                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 830                 op->o_connid,
 831                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 832                 0 );
 833
 834         if ( ctrl->ldctl_value.bv_len == 0 ) {
 835                 Debug( LDAP_DEBUG_TRACE,
 836                         "parseProxyAuthz: conn=%lu anonymous\n",
 837                         op->o_connid, 0, 0 );
 838
 839                 /* anonymous */
 840                 op->o_ndn.bv_val[ 0 ] = '\0';
 841                 op->o_ndn.bv_len = 0;
 842
 843                 op->o_dn.bv_val[ 0 ] = '\0';
 844                 op->o_dn.bv_len = 0;
 845
 846                 return LDAP_SUCCESS;
 847         }
 848
 849         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 850                         NULL, &dn, SLAP_GETDN_AUTHZID );
 851
 852         /* FIXME: empty DN in proxyAuthz control should be legal... */
 853         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 854                 if ( dn.bv_val ) {
 855                         ch_free( dn.bv_val );
 856                 }
 857                 rs->sr_text = "authzId mapping failed";
 858                 return LDAP_PROXY_AUTHZ_FAILURE;
 859         }
 860
 861         Debug( LDAP_DEBUG_TRACE,
 862                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 863                 op->o_connid,
 864                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 865
 866         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 867
 868         if ( rc ) {
 869                 ch_free( dn.bv_val );
 870                 rs->sr_text = "not authorized to assume identity";
 871                 return LDAP_PROXY_AUTHZ_FAILURE;
 872         }
 873
 874         ch_free( op->o_ndn.bv_val );
 875         ch_free( op->o_dn.bv_val );
 876
 877         /*
 878          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 879          * from now on op->o_dn is normalized
 880          */
 881         op->o_ndn = dn;
 882         ber_dupbv( &op->o_dn, &dn );
 883
 884
 885         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 886             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 887
 888         return LDAP_SUCCESS;
 889 }
 890
 891 static int parseNoOp (
 892         Operation *op,
 893         SlapReply *rs,
 894         LDAPControl *ctrl )
 895 {
 896         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 897                 rs->sr_text = "noop control specified multiple times";
 898                 return LDAP_PROTOCOL_ERROR;
 899         }
 900
 901         if ( ctrl->ldctl_value.bv_len ) {
 902                 rs->sr_text = "noop control value not empty";
 903                 return LDAP_PROTOCOL_ERROR;
 904         }
 905
 906         op->o_noop = ctrl->ldctl_iscritical
 907                 ? SLAP_CONTROL_CRITICAL
 908                 : SLAP_CONTROL_NONCRITICAL;
 909
 910         return LDAP_SUCCESS;
 911 }
 912
 913 static int parsePagedResults (
 914         Operation *op,
 915         SlapReply *rs,
 916         LDAPControl *ctrl )
 917 {
 918         int             rc = LDAP_SUCCESS;
 919         ber_tag_t       tag;
 920         ber_int_t       size;
 921         BerElement      *ber;
 922         struct berval   cookie = BER_BVNULL;
 923         PagedResultsState       *ps;
 924
 925         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 926                 rs->sr_text = "paged results control specified multiple times";
 927                 return LDAP_PROTOCOL_ERROR;
 928         }
 929
 930         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 931                 rs->sr_text = "paged results control value is empty (or absent)";
 932                 return LDAP_PROTOCOL_ERROR;
 933         }
 934
 935         /* Parse the control value
 936          *      realSearchControlValue ::= SEQUENCE {
 937          *              size    INTEGER (0..maxInt),
 938          *                              -- requested page size from client
 939          *                              -- result set size estimate from server
 940          *              cookie  OCTET STRING
 941          * }
 942          */
 943         ber = ber_init( &ctrl->ldctl_value );
 944         if ( ber == NULL ) {
 945                 rs->sr_text = "internal error";
 946                 return LDAP_OTHER;
 947         }
 948
 949         tag = ber_scanf( ber, "{im}", &size, &cookie );
 950
 951         if ( tag == LBER_ERROR ) {
 952                 rs->sr_text = "paged results control could not be decoded";
 953                 rc = LDAP_PROTOCOL_ERROR;
 954                 goto done;
 955         }
 956
 957         if ( size < 0 ) {
 958                 rs->sr_text = "paged results control size invalid";
 959                 rc = LDAP_PROTOCOL_ERROR;
 960                 goto done;
 961         }
 962
 963         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 964         *ps = op->o_conn->c_pagedresults_state;
 965         ps->ps_size = size;
 966         op->o_pagedresults_state = ps;
 967
 968         /* NOTE: according to RFC 2696 3.:
 969
 970     If the page size is greater than or equal to the sizeLimit value, the
 971     server should ignore the control as the request can be satisfied in a
 972     single page.
 973
 974          * NOTE: this assumes that the op->ors_slimit be set
 975          * before the controls are parsed.
 976          */
 977
 978         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 979                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 980
 981         } else if ( ctrl->ldctl_iscritical ) {
 982                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 983
 984         } else {
 985                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 986         }
 987
 988 done:;
 989         (void)ber_free( ber, 1 );
 990         return rc;
 991 }
 992
 993 #ifdef LDAP_DEVEL
 994 static int parseSortedResults (
 995         Operation *op,
 996         SlapReply *rs,
 997         LDAPControl *ctrl )
 998 {
 999         int             rc = LDAP_SUCCESS;
1000
1001         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
1002                 rs->sr_text = "sorted results control specified multiple times";
1003                 return LDAP_PROTOCOL_ERROR;
1004         }
1005
1006         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1007                 rs->sr_text = "sorted results control value is empty (or absent)";
1008                 return LDAP_PROTOCOL_ERROR;
1009         }
1010
1011         /* blow off parsing the value */
1012
1013         op->o_sortedresults = ctrl->ldctl_iscritical
1014                 ? SLAP_CONTROL_CRITICAL
1015                 : SLAP_CONTROL_NONCRITICAL;
1016
1017         return rc;
1018 }
1019 #endif
1020
1021 static int parseAssert (
1022         Operation *op,
1023         SlapReply *rs,
1024         LDAPControl *ctrl )
1025 {
1026         BerElement      *ber;
1027         struct berval   fstr = BER_BVNULL;
1028
1029         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1030                 rs->sr_text = "assert control specified multiple times";
1031                 return LDAP_PROTOCOL_ERROR;
1032         }
1033
1034         if ( ctrl->ldctl_value.bv_len == 0 ) {
1035                 rs->sr_text = "assert control value is empty (or absent)";
1036                 return LDAP_PROTOCOL_ERROR;
1037         }
1038
1039         ber = ber_init( &(ctrl->ldctl_value) );
1040         if (ber == NULL) {
1041                 rs->sr_text = "assert control: internal error";
1042                 return LDAP_OTHER;
1043         }
1044
1045         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
1046
1047         if( rs->sr_err != LDAP_SUCCESS ) {
1048                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1049                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1050                         send_ldap_disconnect( op, rs );
1051                         rs->sr_err = SLAPD_DISCONNECT;
1052                 } else {
1053                         send_ldap_result( op, rs );
1054                 }
1055                 if( op->o_assertion != NULL ) {
1056                         filter_free_x( op, op->o_assertion );
1057                 }
1058                 return rs->sr_err;
1059         }
1060
1061 #ifdef LDAP_DEBUG
1062         filter2bv_x( op, op->o_assertion, &fstr );
1063
1064         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1065                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1066         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1067 #endif
1068
1069         op->o_assert = ctrl->ldctl_iscritical
1070                 ? SLAP_CONTROL_CRITICAL
1071                 : SLAP_CONTROL_NONCRITICAL;
1072
1073         rs->sr_err = LDAP_SUCCESS;
1074         return LDAP_SUCCESS;
1075 }
1076
1077 static int parsePreRead (
1078         Operation *op,
1079         SlapReply *rs,
1080         LDAPControl *ctrl )
1081 {
1082         ber_len_t siz, off, i;
1083         AttributeName *an = NULL;
1084         BerElement      *ber;
1085
1086         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1087                 rs->sr_text = "preread control specified multiple times";
1088                 return LDAP_PROTOCOL_ERROR;
1089         }
1090
1091         if ( ctrl->ldctl_value.bv_len == 0 ) {
1092                 rs->sr_text = "preread control value is empty (or absent)";
1093                 return LDAP_PROTOCOL_ERROR;
1094         }
1095
1096         ber = ber_init( &(ctrl->ldctl_value) );
1097         if (ber == NULL) {
1098                 rs->sr_text = "preread control: internal error";
1099                 return LDAP_OTHER;
1100         }
1101
1102         siz = sizeof( AttributeName );
1103         off = offsetof( AttributeName, an_name );
1104         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1105                 rs->sr_text = "preread control: decoding error";
1106                 return LDAP_PROTOCOL_ERROR;
1107         }
1108
1109         for( i=0; i<siz; i++ ) {
1110                 int             rc = LDAP_SUCCESS;
1111                 const char      *dummy = NULL;
1112
1113                 an[i].an_desc = NULL;
1114                 an[i].an_oc = NULL;
1115                 an[i].an_oc_exclude = 0;
1116                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1117                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1118                         rs->sr_text = dummy
1119                                 ? dummy
1120                                 : "postread control: unknown attributeType";
1121                         return rc;
1122                 }
1123         }
1124
1125         op->o_preread = ctrl->ldctl_iscritical
1126                 ? SLAP_CONTROL_CRITICAL
1127                 : SLAP_CONTROL_NONCRITICAL;
1128
1129         op->o_preread_attrs = an;
1130
1131         rs->sr_err = LDAP_SUCCESS;
1132         return LDAP_SUCCESS;
1133 }
1134
1135 static int parsePostRead (
1136         Operation *op,
1137         SlapReply *rs,
1138         LDAPControl *ctrl )
1139 {
1140         ber_len_t siz, off, i;
1141         AttributeName *an = NULL;
1142         BerElement      *ber;
1143
1144         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1145                 rs->sr_text = "postread control specified multiple times";
1146                 return LDAP_PROTOCOL_ERROR;
1147         }
1148
1149         if ( ctrl->ldctl_value.bv_len == 0 ) {
1150                 rs->sr_text = "postread control value is empty (or absent)";
1151                 return LDAP_PROTOCOL_ERROR;
1152         }
1153
1154         ber = ber_init( &(ctrl->ldctl_value) );
1155         if (ber == NULL) {
1156                 rs->sr_text = "postread control: internal error";
1157                 return LDAP_OTHER;
1158         }
1159
1160         siz = sizeof( AttributeName );
1161         off = offsetof( AttributeName, an_name );
1162         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1163                 rs->sr_text = "postread control: decoding error";
1164                 return LDAP_PROTOCOL_ERROR;
1165         }
1166
1167         for( i=0; i<siz; i++ ) {
1168                 int             rc = LDAP_SUCCESS;
1169                 const char      *dummy = NULL;
1170
1171                 an[i].an_desc = NULL;
1172                 an[i].an_oc = NULL;
1173                 an[i].an_oc_exclude = 0;
1174                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1175                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1176                         rs->sr_text = dummy
1177                                 ? dummy
1178                                 : "postread control: unknown attributeType";
1179                         return rc;
1180                 }
1181         }
1182
1183         op->o_postread = ctrl->ldctl_iscritical
1184                 ? SLAP_CONTROL_CRITICAL
1185                 : SLAP_CONTROL_NONCRITICAL;
1186
1187         op->o_postread_attrs = an;
1188
1189         rs->sr_err = LDAP_SUCCESS;
1190         return LDAP_SUCCESS;
1191 }
1192
1193 static int parseValuesReturnFilter (
1194         Operation *op,
1195         SlapReply *rs,
1196         LDAPControl *ctrl )
1197 {
1198         BerElement      *ber;
1199         struct berval   fstr = BER_BVNULL;
1200
1201         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1202                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1203                 return LDAP_PROTOCOL_ERROR;
1204         }
1205
1206         if ( ctrl->ldctl_value.bv_len == 0 ) {
1207                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1208                 return LDAP_PROTOCOL_ERROR;
1209         }
1210
1211         ber = ber_init( &(ctrl->ldctl_value) );
1212         if (ber == NULL) {
1213                 rs->sr_text = "internal error";
1214                 return LDAP_OTHER;
1215         }
1216
1217         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1218
1219         if( rs->sr_err != LDAP_SUCCESS ) {
1220                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1221                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1222                         send_ldap_disconnect( op, rs );
1223                         rs->sr_err = SLAPD_DISCONNECT;
1224                 } else {
1225                         send_ldap_result( op, rs );
1226                 }
1227                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1228         }
1229 #ifdef LDAP_DEBUG
1230         else {
1231                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1232         }
1233
1234         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1235                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1236         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1237 #endif
1238
1239         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1240                 ? SLAP_CONTROL_CRITICAL
1241                 : SLAP_CONTROL_NONCRITICAL;
1242
1243         rs->sr_err = LDAP_SUCCESS;
1244         return LDAP_SUCCESS;
1245 }
1246
1247 #ifdef LDAP_CONTROL_SUBENTRIES
1248 static int parseSubentries (
1249         Operation *op,
1250         SlapReply *rs,
1251         LDAPControl *ctrl )
1252 {
1253         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1254                 rs->sr_text = "subentries control specified multiple times";
1255                 return LDAP_PROTOCOL_ERROR;
1256         }
1257
1258         /* FIXME: should use BER library */
1259         if( ( ctrl->ldctl_value.bv_len != 3 )
1260                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1261                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1262         {
1263                 rs->sr_text = "subentries control value encoding is bogus";
1264                 return LDAP_PROTOCOL_ERROR;
1265         }
1266
1267         op->o_subentries = ctrl->ldctl_iscritical
1268                 ? SLAP_CONTROL_CRITICAL
1269                 : SLAP_CONTROL_NONCRITICAL;
1270
1271         if (ctrl->ldctl_value.bv_val[2]) {
1272                 set_subentries_visibility( op );
1273         }
1274
1275         return LDAP_SUCCESS;
1276 }
1277 #endif
1278
1279 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1280 static int parsePermissiveModify (
1281         Operation *op,
1282         SlapReply *rs,
1283         LDAPControl *ctrl )
1284 {
1285         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1286                 rs->sr_text = "permissiveModify control specified multiple times";
1287                 return LDAP_PROTOCOL_ERROR;
1288         }
1289
1290         if ( ctrl->ldctl_value.bv_len ) {
1291                 rs->sr_text = "permissiveModify control value not empty";
1292                 return LDAP_PROTOCOL_ERROR;
1293         }
1294
1295         op->o_permissive_modify = ctrl->ldctl_iscritical
1296                 ? SLAP_CONTROL_CRITICAL
1297                 : SLAP_CONTROL_NONCRITICAL;
1298
1299         return LDAP_SUCCESS;
1300 }
1301 #endif
1302
1303 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1304 static int parseDomainScope (
1305         Operation *op,
1306         SlapReply *rs,
1307         LDAPControl *ctrl )
1308 {
1309         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1310                 rs->sr_text = "domainScope control specified multiple times";
1311                 return LDAP_PROTOCOL_ERROR;
1312         }
1313
1314         if ( ctrl->ldctl_value.bv_len ) {
1315                 rs->sr_text = "domainScope control value not empty";
1316                 return LDAP_PROTOCOL_ERROR;
1317         }
1318
1319         op->o_domain_scope = ctrl->ldctl_iscritical
1320                 ? SLAP_CONTROL_CRITICAL
1321                 : SLAP_CONTROL_NONCRITICAL;
1322
1323         return LDAP_SUCCESS;
1324 }
1325 #endif
1326
1327 #ifdef SLAP_CONTROL_X_TREE_DELETE
1328 static int parseTreeDelete (
1329         Operation *op,
1330         SlapReply *rs,
1331         LDAPControl *ctrl )
1332 {
1333         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1334                 rs->sr_text = "treeDelete control specified multiple times";
1335                 return LDAP_PROTOCOL_ERROR;
1336         }
1337
1338         if ( ctrl->ldctl_value.bv_len ) {
1339                 rs->sr_text = "treeDelete control value not empty";
1340                 return LDAP_PROTOCOL_ERROR;
1341         }
1342
1343         op->o_tree_delete = ctrl->ldctl_iscritical
1344                 ? SLAP_CONTROL_CRITICAL
1345                 : SLAP_CONTROL_NONCRITICAL;
1346
1347         return LDAP_SUCCESS;
1348 }
1349 #endif
1350
1351 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
1352 static int parseSearchOptions (
1353         Operation *op,
1354         SlapReply *rs,
1355         LDAPControl *ctrl )
1356 {
1357         BerElement *ber;
1358         ber_int_t search_flags;
1359         ber_tag_t tag;
1360
1361         if ( ctrl->ldctl_value.bv_len == 0 ) {
1362                 rs->sr_text = "searchOptions control value is empty (or absent)";
1363                 return LDAP_PROTOCOL_ERROR;
1364         }
1365
1366         ber = ber_init( &ctrl->ldctl_value );
1367         if( ber == NULL ) {
1368                 rs->sr_text = "internal error";
1369                 return LDAP_OTHER;
1370         }
1371
1372         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1373                 rs->sr_text = "searchOptions control decoding error";
1374                 return LDAP_PROTOCOL_ERROR;
1375         }
1376
1377         (void) ber_free( ber, 1 );
1378
1379         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1380                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1381                         rs->sr_text = "searchOptions control specified multiple times "
1382                                 "or with domainScope control";
1383                         return LDAP_PROTOCOL_ERROR;
1384                 }
1385
1386                 op->o_domain_scope = ctrl->ldctl_iscritical
1387                         ? SLAP_CONTROL_CRITICAL
1388                         : SLAP_CONTROL_NONCRITICAL;
1389         }
1390
1391         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1392                 /* Other search flags not recognised so far,
1393                  * including:
1394                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1395                  */
1396                 rs->sr_text = "searchOptions contained unrecognized flag";
1397                 return LDAP_UNWILLING_TO_PERFORM;
1398         }
1399
1400         return LDAP_SUCCESS;
1401 }
1402 #endif
1403