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, 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 #ifdef LDAP_DEVEL
 698 static int parseManageDIT (
 699         Operation *op,
 700         SlapReply *rs,
 701         LDAPControl *ctrl )
 702 {
 703         if ( op->o_managedit != SLAP_CONTROL_NONE ) {
 704                 rs->sr_text = "manageDIT control specified multiple times";
 705                 return LDAP_PROTOCOL_ERROR;
 706         }
 707
 708         if ( ctrl->ldctl_value.bv_len ) {
 709                 rs->sr_text = "manageDIT control value not empty";
 710                 return LDAP_PROTOCOL_ERROR;
 711         }
 712
 713         op->o_managedit = ctrl->ldctl_iscritical
 714                 ? SLAP_CONTROL_CRITICAL
 715                 : SLAP_CONTROL_NONCRITICAL;
 716
 717         return LDAP_SUCCESS;
 718 }
 719 #endif
 720
 721 static int parseManageDSAit (
 722         Operation *op,
 723         SlapReply *rs,
 724         LDAPControl *ctrl )
 725 {
 726         if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
 727                 rs->sr_text = "manageDSAit control specified multiple times";
 728                 return LDAP_PROTOCOL_ERROR;
 729         }
 730
 731         if ( ctrl->ldctl_value.bv_len ) {
 732                 rs->sr_text = "manageDSAit control value not empty";
 733                 return LDAP_PROTOCOL_ERROR;
 734         }
 735
 736         op->o_managedsait = ctrl->ldctl_iscritical
 737                 ? SLAP_CONTROL_CRITICAL
 738                 : SLAP_CONTROL_NONCRITICAL;
 739
 740         return LDAP_SUCCESS;
 741 }
 742
 743 static int parseProxyAuthz (
 744         Operation *op,
 745         SlapReply *rs,
 746         LDAPControl *ctrl )
 747 {
 748         int             rc;
 749         struct berval   dn = BER_BVNULL;
 750
 751         if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
 752                 rs->sr_text = "proxy authorization control specified multiple times";
 753                 return LDAP_PROTOCOL_ERROR;
 754         }
 755
 756         op->o_proxy_authz = ctrl->ldctl_iscritical
 757                 ? SLAP_CONTROL_CRITICAL
 758                 : SLAP_CONTROL_NONCRITICAL;
 759
 760         Debug( LDAP_DEBUG_ARGS,
 761                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 762                 op->o_connid,
 763                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 764                 0 );
 765
 766         if ( ctrl->ldctl_value.bv_len == 0 ) {
 767                 Debug( LDAP_DEBUG_TRACE,
 768                         "parseProxyAuthz: conn=%lu anonymous\n",
 769                         op->o_connid, 0, 0 );
 770
 771                 /* anonymous */
 772                 op->o_ndn.bv_val[ 0 ] = '\0';
 773                 op->o_ndn.bv_len = 0;
 774
 775                 op->o_dn.bv_val[ 0 ] = '\0';
 776                 op->o_dn.bv_len = 0;
 777
 778                 return LDAP_SUCCESS;
 779         }
 780
 781         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 782                         NULL, &dn, SLAP_GETDN_AUTHZID );
 783
 784         /* FIXME: empty DN in proxyAuthz control should be legal... */
 785         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 786                 if ( dn.bv_val ) {
 787                         ch_free( dn.bv_val );
 788                 }
 789                 rs->sr_text = "authzId mapping failed";
 790                 return LDAP_PROXY_AUTHZ_FAILURE;
 791         }
 792
 793         Debug( LDAP_DEBUG_TRACE,
 794                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 795                 op->o_connid,
 796                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 797
 798         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 799
 800         if ( rc ) {
 801                 ch_free( dn.bv_val );
 802                 rs->sr_text = "not authorized to assume identity";
 803                 return LDAP_PROXY_AUTHZ_FAILURE;
 804         }
 805
 806         ch_free( op->o_ndn.bv_val );
 807         ch_free( op->o_dn.bv_val );
 808
 809         /*
 810          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 811          * from now on op->o_dn is normalized
 812          */
 813         op->o_ndn = dn;
 814         ber_dupbv( &op->o_dn, &dn );
 815
 816
 817         Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
 818             op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 819
 820         return LDAP_SUCCESS;
 821 }
 822
 823 static int parseNoOp (
 824         Operation *op,
 825         SlapReply *rs,
 826         LDAPControl *ctrl )
 827 {
 828         if ( op->o_noop != SLAP_CONTROL_NONE ) {
 829                 rs->sr_text = "noop control specified multiple times";
 830                 return LDAP_PROTOCOL_ERROR;
 831         }
 832
 833         if ( ctrl->ldctl_value.bv_len ) {
 834                 rs->sr_text = "noop control value not empty";
 835                 return LDAP_PROTOCOL_ERROR;
 836         }
 837
 838         op->o_noop = ctrl->ldctl_iscritical
 839                 ? SLAP_CONTROL_CRITICAL
 840                 : SLAP_CONTROL_NONCRITICAL;
 841
 842         return LDAP_SUCCESS;
 843 }
 844
 845 static int parsePagedResults (
 846         Operation *op,
 847         SlapReply *rs,
 848         LDAPControl *ctrl )
 849 {
 850         int             rc = LDAP_SUCCESS;
 851         ber_tag_t       tag;
 852         ber_int_t       size;
 853         BerElement      *ber;
 854         struct berval   cookie = BER_BVNULL;
 855         PagedResultsState       *ps;
 856
 857         if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
 858                 rs->sr_text = "paged results control specified multiple times";
 859                 return LDAP_PROTOCOL_ERROR;
 860         }
 861
 862         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 863                 rs->sr_text = "paged results control value is empty (or absent)";
 864                 return LDAP_PROTOCOL_ERROR;
 865         }
 866
 867         /* Parse the control value
 868          *      realSearchControlValue ::= SEQUENCE {
 869          *              size    INTEGER (0..maxInt),
 870          *                              -- requested page size from client
 871          *                              -- result set size estimate from server
 872          *              cookie  OCTET STRING
 873          * }
 874          */
 875         ber = ber_init( &ctrl->ldctl_value );
 876         if ( ber == NULL ) {
 877                 rs->sr_text = "internal error";
 878                 return LDAP_OTHER;
 879         }
 880
 881         tag = ber_scanf( ber, "{im}", &size, &cookie );
 882
 883         if ( tag == LBER_ERROR ) {
 884                 rs->sr_text = "paged results control could not be decoded";
 885                 rc = LDAP_PROTOCOL_ERROR;
 886                 goto done;
 887         }
 888
 889         if ( size < 0 ) {
 890                 rs->sr_text = "paged results control size invalid";
 891                 rc = LDAP_PROTOCOL_ERROR;
 892                 goto done;
 893         }
 894
 895 #if 0
 896         /* defer cookie decoding/checks to backend... */
 897         if ( cookie.bv_len ) {
 898                 PagedResultsCookie reqcookie;
 899                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 900                         /* bad cookie */
 901                         rs->sr_text = "paged results cookie is invalid";
 902                         rc = LDAP_PROTOCOL_ERROR;
 903                         goto done;
 904                 }
 905
 906                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 907
 908                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 909                         /* bad cookie */
 910                         rs->sr_text = "paged results cookie is invalid";
 911                         rc = LDAP_PROTOCOL_ERROR;
 912                         goto done;
 913
 914                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 915                         rs->sr_text = "paged results cookie is invalid or old";
 916                         rc = LDAP_UNWILLING_TO_PERFORM;
 917                         goto done;
 918                 }
 919
 920         } else {
 921                 /* Initial request.  Initialize state. */
 922 #if 0
 923                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 924                         /* There's another pagedResults control on the
 925                          * same connection; reject new pagedResults controls
 926                          * (allowed by RFC2696) */
 927                         rs->sr_text = "paged results cookie unavailable; try later";
 928                         rc = LDAP_UNWILLING_TO_PERFORM;
 929                         goto done;
 930                 }
 931 #endif
 932                 op->o_pagedresults_state.ps_cookie = 0;
 933                 op->o_pagedresults_state.ps_count = 0;
 934         }
 935 #endif
 936
 937         ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
 938         *ps = op->o_conn->c_pagedresults_state;
 939         ps->ps_size = size;
 940         op->o_pagedresults_state = ps;
 941
 942         /* NOTE: according to RFC 2696 3.:
 943
 944     If the page size is greater than or equal to the sizeLimit value, the
 945     server should ignore the control as the request can be satisfied in a
 946     single page.
 947
 948          * NOTE: this assumes that the op->ors_slimit be set
 949          * before the controls are parsed.
 950          */
 951
 952         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 953                 op->o_pagedresults = SLAP_CONTROL_IGNORED;
 954
 955         } else if ( ctrl->ldctl_iscritical ) {
 956                 op->o_pagedresults = SLAP_CONTROL_CRITICAL;
 957
 958         } else {
 959                 op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
 960         }
 961
 962 done:;
 963         (void)ber_free( ber, 1 );
 964         return rc;
 965 }
 966
 967 #ifdef LDAP_DEVEL
 968 static int parseSortedResults (
 969         Operation *op,
 970         SlapReply *rs,
 971         LDAPControl *ctrl )
 972 {
 973         int             rc = LDAP_SUCCESS;
 974
 975         if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
 976                 rs->sr_text = "sorted results control specified multiple times";
 977                 return LDAP_PROTOCOL_ERROR;
 978         }
 979
 980         if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
 981                 rs->sr_text = "sorted results control value is empty (or absent)";
 982                 return LDAP_PROTOCOL_ERROR;
 983         }
 984
 985         /* blow off parsing the value */
 986
 987         op->o_sortedresults = ctrl->ldctl_iscritical
 988                 ? SLAP_CONTROL_CRITICAL
 989                 : SLAP_CONTROL_NONCRITICAL;
 990
 991         return rc;
 992 }
 993 #endif
 994
 995 static int parseAssert (
 996         Operation *op,
 997         SlapReply *rs,
 998         LDAPControl *ctrl )
 999 {
1000         BerElement      *ber;
1001         struct berval   fstr = BER_BVNULL;
1002
1003         if ( op->o_assert != SLAP_CONTROL_NONE ) {
1004                 rs->sr_text = "assert control specified multiple times";
1005                 return LDAP_PROTOCOL_ERROR;
1006         }
1007
1008         if ( ctrl->ldctl_value.bv_len == 0 ) {
1009                 rs->sr_text = "assert control value is empty (or absent)";
1010                 return LDAP_PROTOCOL_ERROR;
1011         }
1012
1013         ber = ber_init( &(ctrl->ldctl_value) );
1014         if (ber == NULL) {
1015                 rs->sr_text = "assert control: internal error";
1016                 return LDAP_OTHER;
1017         }
1018
1019         rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
1020
1021         if( rs->sr_err != LDAP_SUCCESS ) {
1022                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1023                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1024                         send_ldap_disconnect( op, rs );
1025                         rs->sr_err = SLAPD_DISCONNECT;
1026                 } else {
1027                         send_ldap_result( op, rs );
1028                 }
1029                 if( op->o_assertion != NULL ) {
1030                         filter_free_x( op, op->o_assertion );
1031                 }
1032                 return rs->sr_err;
1033         }
1034
1035 #ifdef LDAP_DEBUG
1036         filter2bv_x( op, op->o_assertion, &fstr );
1037
1038         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1039                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1040         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1041 #endif
1042
1043         op->o_assert = ctrl->ldctl_iscritical
1044                 ? SLAP_CONTROL_CRITICAL
1045                 : SLAP_CONTROL_NONCRITICAL;
1046
1047         rs->sr_err = LDAP_SUCCESS;
1048         return LDAP_SUCCESS;
1049 }
1050
1051 static int parsePreRead (
1052         Operation *op,
1053         SlapReply *rs,
1054         LDAPControl *ctrl )
1055 {
1056         ber_len_t siz, off, i;
1057         AttributeName *an = NULL;
1058         BerElement      *ber;
1059
1060         if ( op->o_preread != SLAP_CONTROL_NONE ) {
1061                 rs->sr_text = "preread control specified multiple times";
1062                 return LDAP_PROTOCOL_ERROR;
1063         }
1064
1065         if ( ctrl->ldctl_value.bv_len == 0 ) {
1066                 rs->sr_text = "preread control value is empty (or absent)";
1067                 return LDAP_PROTOCOL_ERROR;
1068         }
1069
1070         ber = ber_init( &(ctrl->ldctl_value) );
1071         if (ber == NULL) {
1072                 rs->sr_text = "preread control: internal error";
1073                 return LDAP_OTHER;
1074         }
1075
1076         siz = sizeof( AttributeName );
1077         off = offsetof( AttributeName, an_name );
1078         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1079                 rs->sr_text = "preread control: decoding error";
1080                 return LDAP_PROTOCOL_ERROR;
1081         }
1082
1083         for( i=0; i<siz; i++ ) {
1084                 int             rc = LDAP_SUCCESS;
1085                 const char      *dummy = NULL;
1086
1087                 an[i].an_desc = NULL;
1088                 an[i].an_oc = NULL;
1089                 an[i].an_oc_exclude = 0;
1090                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1091                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1092                         rs->sr_text = dummy
1093                                 ? dummy
1094                                 : "postread control: unknown attributeType";
1095                         return rc;
1096                 }
1097         }
1098
1099         op->o_preread = ctrl->ldctl_iscritical
1100                 ? SLAP_CONTROL_CRITICAL
1101                 : SLAP_CONTROL_NONCRITICAL;
1102
1103         op->o_preread_attrs = an;
1104
1105         rs->sr_err = LDAP_SUCCESS;
1106         return LDAP_SUCCESS;
1107 }
1108
1109 static int parsePostRead (
1110         Operation *op,
1111         SlapReply *rs,
1112         LDAPControl *ctrl )
1113 {
1114         ber_len_t siz, off, i;
1115         AttributeName *an = NULL;
1116         BerElement      *ber;
1117
1118         if ( op->o_postread != SLAP_CONTROL_NONE ) {
1119                 rs->sr_text = "postread control specified multiple times";
1120                 return LDAP_PROTOCOL_ERROR;
1121         }
1122
1123         if ( ctrl->ldctl_value.bv_len == 0 ) {
1124                 rs->sr_text = "postread control value is empty (or absent)";
1125                 return LDAP_PROTOCOL_ERROR;
1126         }
1127
1128         ber = ber_init( &(ctrl->ldctl_value) );
1129         if (ber == NULL) {
1130                 rs->sr_text = "postread control: internal error";
1131                 return LDAP_OTHER;
1132         }
1133
1134         siz = sizeof( AttributeName );
1135         off = offsetof( AttributeName, an_name );
1136         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1137                 rs->sr_text = "postread control: decoding error";
1138                 return LDAP_PROTOCOL_ERROR;
1139         }
1140
1141         for( i=0; i<siz; i++ ) {
1142                 int             rc = LDAP_SUCCESS;
1143                 const char      *dummy = NULL;
1144
1145                 an[i].an_desc = NULL;
1146                 an[i].an_oc = NULL;
1147                 an[i].an_oc_exclude = 0;
1148                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1149                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1150                         rs->sr_text = dummy
1151                                 ? dummy
1152                                 : "postread control: unknown attributeType";
1153                         return rc;
1154                 }
1155         }
1156
1157         op->o_postread = ctrl->ldctl_iscritical
1158                 ? SLAP_CONTROL_CRITICAL
1159                 : SLAP_CONTROL_NONCRITICAL;
1160
1161         op->o_postread_attrs = an;
1162
1163         rs->sr_err = LDAP_SUCCESS;
1164         return LDAP_SUCCESS;
1165 }
1166
1167 static int parseValuesReturnFilter (
1168         Operation *op,
1169         SlapReply *rs,
1170         LDAPControl *ctrl )
1171 {
1172         BerElement      *ber;
1173         struct berval   fstr = BER_BVNULL;
1174
1175         if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
1176                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1177                 return LDAP_PROTOCOL_ERROR;
1178         }
1179
1180         if ( ctrl->ldctl_value.bv_len == 0 ) {
1181                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1182                 return LDAP_PROTOCOL_ERROR;
1183         }
1184
1185         ber = ber_init( &(ctrl->ldctl_value) );
1186         if (ber == NULL) {
1187                 rs->sr_text = "internal error";
1188                 return LDAP_OTHER;
1189         }
1190
1191         rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
1192
1193         if( rs->sr_err != LDAP_SUCCESS ) {
1194                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1195                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1196                         send_ldap_disconnect( op, rs );
1197                         rs->sr_err = SLAPD_DISCONNECT;
1198                 } else {
1199                         send_ldap_result( op, rs );
1200                 }
1201                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1202         }
1203 #ifdef LDAP_DEBUG
1204         else {
1205                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1206         }
1207
1208         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1209                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1210         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1211 #endif
1212
1213         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1214                 ? SLAP_CONTROL_CRITICAL
1215                 : SLAP_CONTROL_NONCRITICAL;
1216
1217         rs->sr_err = LDAP_SUCCESS;
1218         return LDAP_SUCCESS;
1219 }
1220
1221 #ifdef LDAP_CONTROL_SUBENTRIES
1222 static int parseSubentries (
1223         Operation *op,
1224         SlapReply *rs,
1225         LDAPControl *ctrl )
1226 {
1227         if ( op->o_subentries != SLAP_CONTROL_NONE ) {
1228                 rs->sr_text = "subentries control specified multiple times";
1229                 return LDAP_PROTOCOL_ERROR;
1230         }
1231
1232         /* FIXME: should use BER library */
1233         if( ( ctrl->ldctl_value.bv_len != 3 )
1234                 || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1235                 || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1236         {
1237                 rs->sr_text = "subentries control value encoding is bogus";
1238                 return LDAP_PROTOCOL_ERROR;
1239         }
1240
1241         op->o_subentries = ctrl->ldctl_iscritical
1242                 ? SLAP_CONTROL_CRITICAL
1243                 : SLAP_CONTROL_NONCRITICAL;
1244
1245         if (ctrl->ldctl_value.bv_val[2]) {
1246                 set_subentries_visibility( op );
1247         }
1248
1249         return LDAP_SUCCESS;
1250 }
1251 #endif
1252
1253 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1254 static int parsePermissiveModify (
1255         Operation *op,
1256         SlapReply *rs,
1257         LDAPControl *ctrl )
1258 {
1259         if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
1260                 rs->sr_text = "permissiveModify control specified multiple times";
1261                 return LDAP_PROTOCOL_ERROR;
1262         }
1263
1264         if ( ctrl->ldctl_value.bv_len ) {
1265                 rs->sr_text = "permissiveModify control value not empty";
1266                 return LDAP_PROTOCOL_ERROR;
1267         }
1268
1269         op->o_permissive_modify = ctrl->ldctl_iscritical
1270                 ? SLAP_CONTROL_CRITICAL
1271                 : SLAP_CONTROL_NONCRITICAL;
1272
1273         return LDAP_SUCCESS;
1274 }
1275 #endif
1276
1277 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1278 static int parseDomainScope (
1279         Operation *op,
1280         SlapReply *rs,
1281         LDAPControl *ctrl )
1282 {
1283         if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1284                 rs->sr_text = "domainScope control specified multiple times";
1285                 return LDAP_PROTOCOL_ERROR;
1286         }
1287
1288         if ( ctrl->ldctl_value.bv_len ) {
1289                 rs->sr_text = "domainScope control value not empty";
1290                 return LDAP_PROTOCOL_ERROR;
1291         }
1292
1293         op->o_domain_scope = ctrl->ldctl_iscritical
1294                 ? SLAP_CONTROL_CRITICAL
1295                 : SLAP_CONTROL_NONCRITICAL;
1296
1297         return LDAP_SUCCESS;
1298 }
1299 #endif
1300
1301 #ifdef SLAP_CONTROL_X_TREE_DELETE
1302 static int parseTreeDelete (
1303         Operation *op,
1304         SlapReply *rs,
1305         LDAPControl *ctrl )
1306 {
1307         if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
1308                 rs->sr_text = "treeDelete control specified multiple times";
1309                 return LDAP_PROTOCOL_ERROR;
1310         }
1311
1312         if ( ctrl->ldctl_value.bv_len ) {
1313                 rs->sr_text = "treeDelete control value not empty";
1314                 return LDAP_PROTOCOL_ERROR;
1315         }
1316
1317         op->o_tree_delete = ctrl->ldctl_iscritical
1318                 ? SLAP_CONTROL_CRITICAL
1319                 : SLAP_CONTROL_NONCRITICAL;
1320
1321         return LDAP_SUCCESS;
1322 }
1323 #endif
1324
1325 #ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
1326 static int parseSearchOptions (
1327         Operation *op,
1328         SlapReply *rs,
1329         LDAPControl *ctrl )
1330 {
1331         BerElement *ber;
1332         ber_int_t search_flags;
1333         ber_tag_t tag;
1334
1335         if ( ctrl->ldctl_value.bv_len == 0 ) {
1336                 rs->sr_text = "searchOptions control value not empty";
1337                 return LDAP_PROTOCOL_ERROR;
1338         }
1339
1340         ber = ber_init( &ctrl->ldctl_value );
1341         if( ber == NULL ) {
1342                 rs->sr_text = "internal error";
1343                 return LDAP_OTHER;
1344         }
1345
1346         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1347                 rs->sr_text = "searchOptions control decoding error";
1348                 return LDAP_PROTOCOL_ERROR;
1349         }
1350
1351         (void) ber_free( ber, 1 );
1352
1353         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1354                 if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
1355                         rs->sr_text = "searchOptions control specified multiple times "
1356                                 "or with domainScope control";
1357                         return LDAP_PROTOCOL_ERROR;
1358                 }
1359
1360                 op->o_domain_scope = ctrl->ldctl_iscritical
1361                         ? SLAP_CONTROL_CRITICAL
1362                         : SLAP_CONTROL_NONCRITICAL;
1363         }
1364
1365         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1366                 /* Other search flags not recognised so far,
1367                  * including:
1368                  *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
1369                  */
1370                 rs->sr_text = "searchOptions contained unrecongized flag";
1371                 return LDAP_UNWILLING_TO_PERFORM;
1372         }
1373
1374         return LDAP_SUCCESS;
1375 }
1376 #endif
1377