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