git.sur5r.net Git - openldap/blob - servers/slapd/controls.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2004 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15
  16 #include "portable.h"
  17
  18 #include <stdio.h>
  19
  20 #include <ac/string.h>
  21 #include <ac/socket.h>
  22
  23 #include "slap.h"
  24
  25 #include "../../libraries/liblber/lber-int.h"
  26
  27 static SLAP_CTRL_PARSE_FN parseAssert;
  28 static SLAP_CTRL_PARSE_FN parsePreRead;
  29 static SLAP_CTRL_PARSE_FN parsePostRead;
  30 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  31 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  32 static SLAP_CTRL_PARSE_FN parseModifyIncrement;
  33 static SLAP_CTRL_PARSE_FN parseNoOp;
  34 static SLAP_CTRL_PARSE_FN parsePagedResults;
  35 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  36 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  37 static SLAP_CTRL_PARSE_FN parseDomainScope;
  38 static SLAP_CTRL_PARSE_FN parseTreeDelete;
  39 static SLAP_CTRL_PARSE_FN parseSearchOptions;
  40
  41 #ifdef LDAP_CONTROL_SUBENTRIES
  42 static SLAP_CTRL_PARSE_FN parseSubentries;
  43 #endif
  44 static SLAP_CTRL_PARSE_FN parseLDAPsync;
  45
  46 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  47
  48 const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
  49 const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
  50
  51 struct slap_control {
  52         /* Control OID */
  53         char *sc_oid;
  54
  55         /* Operations supported by control */
  56         slap_mask_t sc_mask;
  57
  58         /* Extended operations supported by control */
  59         char **sc_extendedops;
  60
  61         /* Control parsing callback */
  62         SLAP_CTRL_PARSE_FN *sc_parse;
  63
  64         LDAP_SLIST_ENTRY(slap_control) sc_next;
  65 };
  66
  67 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  68         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  69
  70 /*
  71  * all known request control OIDs should be added to this list
  72  */
  73 char **slap_known_controls = NULL;
  74
  75 static char *proxy_authz_extops[] = {
  76         LDAP_EXOP_MODIFY_PASSWD,
  77         LDAP_EXOP_X_WHO_AM_I,
  78         NULL
  79 };
  80
  81 static struct slap_control control_defs[] = {
  82         { LDAP_CONTROL_ASSERT,
  83                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
  84                 parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  85         { LDAP_CONTROL_PRE_READ,
  86                 SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
  87                 parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  88         { LDAP_CONTROL_POST_READ,
  89                 SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
  90                 parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  91         { LDAP_CONTROL_VALUESRETURNFILTER,
  92                 SLAP_CTRL_SEARCH, NULL,
  93                 parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  94         { LDAP_CONTROL_PAGEDRESULTS,
  95                 SLAP_CTRL_SEARCH, NULL,
  96                 parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
  97 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
  98         { LDAP_CONTROL_X_DOMAIN_SCOPE,
  99                 SLAP_CTRL_FRONTEND|SLAP_CTRL_SEARCH, NULL,
 100                 parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 101 #endif
 102 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 103         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 104                 SLAP_CTRL_MODIFY, NULL,
 105                 parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 106 #endif
 107 #ifdef LDAP_CONTROL_X_TREE_DELETE
 108         { LDAP_CONTROL_X_TREE_DELETE,
 109                 SLAP_CTRL_DELETE, NULL,
 110                 parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 111 #endif
 112 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
 113         { LDAP_CONTORL_X_SEARCH_OPTIONS,
 114                 SLAP_CTRL_FRONTEND|SLAP_CTRL_SEARCH, NULL,
 115                 parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 116 #endif
 117 #ifdef LDAP_CONTROL_SUBENTRIES
 118         { LDAP_CONTROL_SUBENTRIES,
 119                 SLAP_CTRL_SEARCH, NULL,
 120                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 121 #endif
 122         { LDAP_CONTROL_NOOP,
 123                 SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
 124                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 125         { LDAP_CONTROL_SYNC,
 126                 SLAP_CTRL_HIDE|SLAP_CTRL_SEARCH, NULL,
 127                 parseLDAPsync, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 128 #ifdef LDAP_CONTROL_MODIFY_INCREMENT
 129         { LDAP_CONTROL_MODIFY_INCREMENT,
 130                 SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
 131                 parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 132 #endif
 133         { LDAP_CONTROL_MANAGEDSAIT,
 134                 SLAP_CTRL_ACCESS, NULL,
 135                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 136         { LDAP_CONTROL_PROXY_AUTHZ,
 137                 SLAP_CTRL_FRONTEND|SLAP_CTRL_ACCESS, proxy_authz_extops,
 138                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 139         { NULL, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 140 };
 141
 142 /*
 143  * Register a supported control.
 144  *
 145  * This can be called by an OpenLDAP plugin or, indirectly, by a
 146  * SLAPI plugin calling slapi_register_supported_control().
 147  */
 148 int
 149 register_supported_control(const char *controloid,
 150         slap_mask_t controlmask,
 151         char **controlexops,
 152         SLAP_CTRL_PARSE_FN *controlparsefn)
 153 {
 154         struct slap_control *sc;
 155         int i;
 156
 157         if ( controloid == NULL ) {
 158                 return LDAP_PARAM_ERROR;
 159         }
 160
 161         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 162         if ( sc == NULL ) {
 163                 return LDAP_NO_MEMORY;
 164         }
 165         sc->sc_oid = ch_strdup( controloid );
 166         sc->sc_mask = controlmask;
 167         if ( controlexops != NULL ) {
 168                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 169                 if ( sc->sc_extendedops == NULL ) {
 170                         ch_free( sc );
 171                         return LDAP_NO_MEMORY;
 172                 }
 173         } else {
 174                 sc->sc_extendedops = NULL;
 175         }
 176         sc->sc_parse = controlparsefn;
 177
 178         /* Update slap_known_controls, too. */
 179         if ( slap_known_controls == NULL ) {
 180                 slap_known_controls = (char **)SLAP_MALLOC( 2 * sizeof(char *) );
 181                 if ( slap_known_controls == NULL ) {
 182                         if ( sc->sc_extendedops != NULL ) ldap_charray_free( sc->sc_extendedops );
 183                         ch_free( sc );
 184                         return LDAP_NO_MEMORY;
 185                 }
 186                 slap_known_controls[0] = ch_strdup( sc->sc_oid );
 187                 slap_known_controls[1] = NULL;
 188         } else {
 189                 for ( i = 0; slap_known_controls[i] != NULL; i++ )
 190                         ;
 191                 slap_known_controls = (char **)SLAP_REALLOC( slap_known_controls, (i + 2) * sizeof(char *) );
 192                 if ( slap_known_controls == NULL ) {
 193                         if ( sc->sc_extendedops != NULL ) ldap_charray_free( sc->sc_extendedops );
 194                         ch_free( sc );
 195                         return LDAP_NO_MEMORY;
 196                 }
 197                 slap_known_controls[i++] = ch_strdup( sc->sc_oid );
 198                 slap_known_controls[i] = NULL;
 199         }
 200
 201         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 202         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 203
 204         return LDAP_SUCCESS;
 205 }
 206
 207 /*
 208  * One-time initialization of internal controls.
 209  */
 210 int
 211 slap_controls_init( void )
 212 {
 213         int i, rc;
 214         struct slap_control *sc;
 215
 216         rc = LDAP_SUCCESS;
 217
 218         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 219                 rc = register_supported_control( control_defs[i].sc_oid,
 220                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 221                         control_defs[i].sc_parse );
 222                 if ( rc != LDAP_SUCCESS )
 223                         break;
 224         }
 225
 226         return rc;
 227 }
 228
 229 /*
 230  * Free memory associated with list of supported controls.
 231  */
 232 void
 233 controls_destroy( void )
 234 {
 235         struct slap_control *sc;
 236
 237         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 238                 sc = LDAP_SLIST_FIRST(&controls_list);
 239                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 240
 241                 ch_free( sc->sc_oid );
 242                 if ( sc->sc_extendedops != NULL ) {
 243                         ldap_charray_free( sc->sc_extendedops );
 244                 }
 245                 ch_free( sc );
 246         }
 247         ldap_charray_free( slap_known_controls );
 248 }
 249
 250 /*
 251  * Format the supportedControl attribute of the root DSE,
 252  * detailing which controls are supported by the directory
 253  * server.
 254  */
 255 int
 256 controls_root_dse_info( Entry *e )
 257 {
 258         AttributeDescription *ad_supportedControl
 259                 = slap_schema.si_ad_supportedControl;
 260         struct berval vals[2];
 261         struct slap_control *sc;
 262
 263         vals[1].bv_val = NULL;
 264         vals[1].bv_len = 0;
 265
 266         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 267                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 268
 269                 vals[0].bv_val = sc->sc_oid;
 270                 vals[0].bv_len = strlen( sc->sc_oid );
 271
 272                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 273                         return -1;
 274                 }
 275         }
 276
 277         return 0;
 278 }
 279
 280 /*
 281  * Return a list of OIDs and operation masks for supported
 282  * controls. Used by SLAPI.
 283  */
 284 int
 285 get_supported_controls(char ***ctrloidsp,
 286         slap_mask_t **ctrlmasks)
 287 {
 288         int i, n;
 289         char **oids;
 290         slap_mask_t *masks;
 291         int rc;
 292         struct slap_control *sc;
 293
 294         n = 0;
 295
 296         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 297                 n++;
 298         }
 299
 300         if ( n == 0 ) {
 301                 *ctrloidsp = NULL;
 302                 *ctrlmasks = NULL;
 303                 return LDAP_SUCCESS;
 304         }
 305
 306         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 307         if ( oids == NULL ) {
 308                 return LDAP_NO_MEMORY;
 309         }
 310         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 311         if  ( masks == NULL ) {
 312                 ch_free( oids );
 313                 return LDAP_NO_MEMORY;
 314         }
 315
 316         n = 0;
 317
 318         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 319                 oids[n] = ch_strdup( sc->sc_oid );
 320                 masks[n] = sc->sc_mask;
 321                 n++;
 322         }
 323         oids[n] = NULL;
 324         masks[n] = 0;
 325
 326         *ctrloidsp = oids;
 327         *ctrlmasks = masks;
 328
 329         return LDAP_SUCCESS;
 330 }
 331
 332 /*
 333  * Find a control given its OID.
 334  */
 335 static struct slap_control *
 336 find_ctrl( const char *oid )
 337 {
 338         struct slap_control *sc;
 339
 340         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 341                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 342                         return sc;
 343                 }
 344         }
 345
 346         return NULL;
 347 }
 348
 349 void slap_free_ctrls(
 350         Operation *op,
 351         LDAPControl **ctrls )
 352 {
 353         int i;
 354
 355         for (i=0; ctrls[i]; i++) {
 356                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 357         }
 358         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 359 }
 360
 361 int get_ctrls(
 362         Operation *op,
 363         SlapReply *rs,
 364         int sendres )
 365 {
 366         int nctrls = 0;
 367         ber_tag_t tag;
 368         ber_len_t len;
 369         char *opaque;
 370         BerElement *ber = op->o_ber;
 371         struct slap_control *sc;
 372         struct berval bv;
 373
 374         len = ber_pvt_ber_remaining(ber);
 375
 376         if( len == 0) {
 377                 /* no controls */
 378                 rs->sr_err = LDAP_SUCCESS;
 379                 return rs->sr_err;
 380         }
 381
 382         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 383                 if( tag == LBER_ERROR ) {
 384                         rs->sr_err = SLAPD_DISCONNECT;
 385                         rs->sr_text = "unexpected data in PDU";
 386                 }
 387
 388                 goto return_results;
 389         }
 390
 391 #ifdef NEW_LOGGING
 392         LDAP_LOG( OPERATION, ENTRY,
 393                 "get_ctrls: conn %lu\n", op->o_connid, 0, 0 );
 394 #else
 395         Debug( LDAP_DEBUG_TRACE,
 396                 "=> get_ctrls\n", 0, 0, 0 );
 397 #endif
 398
 399         if( op->o_protocol < LDAP_VERSION3 ) {
 400                 rs->sr_err = SLAPD_DISCONNECT;
 401                 rs->sr_text = "controls require LDAPv3";
 402                 goto return_results;
 403         }
 404
 405         /* one for first control, one for termination */
 406         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 407
 408 #if 0
 409         if( op->ctrls == NULL ) {
 410                 rs->sr_err = LDAP_NO_MEMORY;
 411                 rs->sr_text = "no memory";
 412                 goto return_results;
 413         }
 414 #endif
 415
 416         op->o_ctrls[nctrls] = NULL;
 417
 418         /* step through each element */
 419         for( tag = ber_first_element( ber, &len, &opaque );
 420                 tag != LBER_ERROR;
 421                 tag = ber_next_element( ber, &len, opaque ) )
 422         {
 423                 LDAPControl *c;
 424                 LDAPControl **tctrls;
 425
 426                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 427                 memset(c, 0, sizeof(LDAPControl));
 428
 429                 /* allocate pointer space for current controls (nctrls)
 430                  * + this control + extra NULL
 431                  */
 432                 tctrls = op->o_tmprealloc( op->o_ctrls,
 433                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 434
 435 #if 0
 436                 if( tctrls == NULL ) {
 437                         ch_free( c );
 438                         ldap_controls_free(op->o_ctrls);
 439                         op->o_ctrls = NULL;
 440
 441                         rs->sr_err = LDAP_NO_MEMORY;
 442                         rs->sr_text = "no memory";
 443                         goto return_results;
 444                 }
 445 #endif
 446                 op->o_ctrls = tctrls;
 447
 448                 op->o_ctrls[nctrls++] = c;
 449                 op->o_ctrls[nctrls] = NULL;
 450
 451                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 452                 c->ldctl_oid = bv.bv_val;
 453
 454                 if( tag == LBER_ERROR ) {
 455 #ifdef NEW_LOGGING
 456                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 457                                 op->o_connid, 0, 0 );
 458 #else
 459                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 460                                 0, 0, 0 );
 461 #endif
 462
 463                         slap_free_ctrls( op, op->o_ctrls );
 464                         op->o_ctrls = NULL;
 465                         rs->sr_err = SLAPD_DISCONNECT;
 466                         rs->sr_text = "decoding controls error";
 467                         goto return_results;
 468
 469                 } else if( c->ldctl_oid == NULL ) {
 470 #ifdef NEW_LOGGING
 471                         LDAP_LOG( OPERATION, INFO,
 472                                 "get_ctrls: conn %lu got emtpy OID.\n",
 473                                 op->o_connid, 0, 0 );
 474 #else
 475                         Debug( LDAP_DEBUG_TRACE,
 476                                 "get_ctrls: conn %lu got emtpy OID.\n",
 477                                 op->o_connid, 0, 0 );
 478 #endif
 479
 480                         slap_free_ctrls( op, op->o_ctrls );
 481                         op->o_ctrls = NULL;
 482                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 483                         rs->sr_text = "OID field is empty";
 484                         goto return_results;
 485                 }
 486
 487                 tag = ber_peek_tag( ber, &len );
 488
 489                 if( tag == LBER_BOOLEAN ) {
 490                         ber_int_t crit;
 491                         tag = ber_scanf( ber, "b", &crit );
 492
 493                         if( tag == LBER_ERROR ) {
 494 #ifdef NEW_LOGGING
 495                                 LDAP_LOG( OPERATION, INFO,
 496                                         "get_ctrls: conn %lu get crit failed.\n",
 497                                         op->o_connid, 0, 0 );
 498 #else
 499                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 500                                         0, 0, 0 );
 501 #endif
 502                                 slap_free_ctrls( op, op->o_ctrls );
 503                                 op->o_ctrls = NULL;
 504                                 rs->sr_err = SLAPD_DISCONNECT;
 505                                 rs->sr_text = "decoding controls error";
 506                                 goto return_results;
 507                         }
 508
 509                         c->ldctl_iscritical = (crit != 0);
 510                         tag = ber_peek_tag( ber, &len );
 511                 }
 512
 513                 if( tag == LBER_OCTETSTRING ) {
 514                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 515
 516                         if( tag == LBER_ERROR ) {
 517 #ifdef NEW_LOGGING
 518                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 519                                         "%s (%scritical): get value failed.\n",
 520                                         op->o_connid, c->ldctl_oid,
 521                                         c->ldctl_iscritical ? "" : "non" );
 522 #else
 523                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 524                                         "%s (%scritical): get value failed.\n",
 525                                         op->o_connid, c->ldctl_oid,
 526                                         c->ldctl_iscritical ? "" : "non" );
 527 #endif
 528                                 slap_free_ctrls( op, op->o_ctrls );
 529                                 op->o_ctrls = NULL;
 530                                 rs->sr_err = SLAPD_DISCONNECT;
 531                                 rs->sr_text = "decoding controls error";
 532                                 goto return_results;
 533                         }
 534                 }
 535
 536 #ifdef NEW_LOGGING
 537                 LDAP_LOG( OPERATION, INFO,
 538                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 539                         op->o_connid, c->ldctl_oid, c->ldctl_iscritical ? "" : "non" );
 540 #else
 541                 Debug( LDAP_DEBUG_TRACE,
 542                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 543                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 544 #endif
 545
 546                 sc = find_ctrl( c->ldctl_oid );
 547                 if( sc != NULL ) {
 548                         /* recognized control */
 549                         slap_mask_t tagmask;
 550                         switch( op->o_tag ) {
 551                         case LDAP_REQ_ADD:
 552                                 tagmask = SLAP_CTRL_ADD;
 553                                 break;
 554                         case LDAP_REQ_BIND:
 555                                 tagmask = SLAP_CTRL_BIND;
 556                                 break;
 557                         case LDAP_REQ_COMPARE:
 558                                 tagmask = SLAP_CTRL_COMPARE;
 559                                 break;
 560                         case LDAP_REQ_DELETE:
 561                                 tagmask = SLAP_CTRL_DELETE;
 562                                 break;
 563                         case LDAP_REQ_MODIFY:
 564                                 tagmask = SLAP_CTRL_MODIFY;
 565                                 break;
 566                         case LDAP_REQ_RENAME:
 567                                 tagmask = SLAP_CTRL_RENAME;
 568                                 break;
 569                         case LDAP_REQ_SEARCH:
 570                                 tagmask = SLAP_CTRL_SEARCH;
 571                                 break;
 572                         case LDAP_REQ_UNBIND:
 573                                 tagmask = SLAP_CTRL_UNBIND;
 574                                 break;
 575                         case LDAP_REQ_ABANDON:
 576                                 tagmask = SLAP_CTRL_ABANDON;
 577                                 break;
 578                         case LDAP_REQ_EXTENDED:
 579                                 tagmask=~0L;
 580                                 assert( op->ore_reqoid.bv_val != NULL );
 581                                 if( sc->sc_extendedops != NULL ) {
 582                                         int i;
 583                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 584                                                 if( strcmp( op->ore_reqoid.bv_val,
 585                                                         sc->sc_extendedops[i] ) == 0 )
 586                                                 {
 587                                                         tagmask=0L;
 588                                                         break;
 589                                                 }
 590                                         }
 591                                 }
 592                                 break;
 593                         default:
 594                                 rs->sr_err = LDAP_OTHER;
 595                                 rs->sr_text = "controls internal error";
 596                                 goto return_results;
 597                         }
 598
 599                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 600                                 /* available extension */
 601                                 int     rc;
 602
 603                                 if( !sc->sc_parse ) {
 604                                         rs->sr_err = LDAP_OTHER;
 605                                         rs->sr_text = "not yet implemented";
 606                                         goto return_results;
 607                                 }
 608
 609                                 rc = sc->sc_parse( op, rs, c );
 610                                 assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 611                                 switch ( rc ) {
 612                                 /* for some reason, the control should be ignored */
 613                                 case SLAP_CTRL_IGNORE:
 614                                         op->o_tmpfree( c, op->o_tmpmemctx );
 615                                         op->o_ctrls[--nctrls] = NULL;
 616                                         goto next_ctrl;
 617
 618                                 /* the control was successfully parsed */
 619                                 case LDAP_SUCCESS:
 620                                         break;
 621
 622                                 /* something happened... */
 623                                 default:
 624                                         rs->sr_err = rc;
 625                                         goto return_results;
 626                                 }
 627
 628                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 629                                         /* kludge to disable backend_control() check */
 630                                         c->ldctl_iscritical = 0;
 631
 632                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 633                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 634                                 {
 635                                         /* kludge to disable backend_control() check */
 636                                         c->ldctl_iscritical = 0;
 637                                 }
 638
 639                         } else if( c->ldctl_iscritical ) {
 640                                 /* unavailable CRITICAL control */
 641                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 642                                 rs->sr_text = "critical extension is unavailable";
 643                                 goto return_results;
 644                         }
 645
 646                 } else if( c->ldctl_iscritical ) {
 647                         /* unrecognized CRITICAL control */
 648                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 649                         rs->sr_text = "critical extension is not recognized";
 650                         goto return_results;
 651                 }
 652 next_ctrl:;
 653         }
 654
 655 return_results:
 656 #ifdef NEW_LOGGING
 657         LDAP_LOG( OPERATION, RESULTS,
 658                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 659                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
 660 #else
 661         Debug( LDAP_DEBUG_TRACE,
 662                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 663                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 664 #endif
 665
 666         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 667                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 668                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 669                         send_ldap_disconnect( op, rs );
 670                         rs->sr_err = SLAPD_DISCONNECT;
 671                 } else {
 672                         send_ldap_result( op, rs );
 673                 }
 674         }
 675
 676         return rs->sr_err;
 677 }
 678
 679 static int parseModifyIncrement (
 680         Operation *op,
 681         SlapReply *rs,
 682         LDAPControl *ctrl )
 683 {
 684 #if 0
 685         if ( op->o_modifyIncrement != SLAP_NO_CONTROL ) {
 686                 rs->sr_text = "modifyIncrement control specified multiple times";
 687                 return LDAP_PROTOCOL_ERROR;
 688         }
 689 #endif
 690
 691         if ( ctrl->ldctl_value.bv_len ) {
 692                 rs->sr_text = "modifyIncrement control value not empty";
 693                 return LDAP_PROTOCOL_ERROR;
 694         }
 695
 696 #if 0
 697         op->o_modifyIncrement = ctrl->ldctl_iscritical
 698                 ? SLAP_CRITICAL_CONTROL
 699                 : SLAP_NONCRITICAL_CONTROL;
 700 #endif
 701
 702         return LDAP_SUCCESS;
 703 }
 704
 705 static int parseManageDSAit (
 706         Operation *op,
 707         SlapReply *rs,
 708         LDAPControl *ctrl )
 709 {
 710         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 711                 rs->sr_text = "manageDSAit control specified multiple times";
 712                 return LDAP_PROTOCOL_ERROR;
 713         }
 714
 715         if ( ctrl->ldctl_value.bv_len ) {
 716                 rs->sr_text = "manageDSAit control value not empty";
 717                 return LDAP_PROTOCOL_ERROR;
 718         }
 719
 720         op->o_managedsait = ctrl->ldctl_iscritical
 721                 ? SLAP_CRITICAL_CONTROL
 722                 : SLAP_NONCRITICAL_CONTROL;
 723
 724         return LDAP_SUCCESS;
 725 }
 726
 727 static int parseProxyAuthz (
 728         Operation *op,
 729         SlapReply *rs,
 730         LDAPControl *ctrl )
 731 {
 732         int             rc;
 733         struct berval   dn = BER_BVNULL;
 734
 735         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 736                 rs->sr_text = "proxy authorization control specified multiple times";
 737                 return LDAP_PROTOCOL_ERROR;
 738         }
 739
 740         op->o_proxy_authz = ctrl->ldctl_iscritical
 741                 ? SLAP_CRITICAL_CONTROL
 742                 : SLAP_NONCRITICAL_CONTROL;
 743
 744 #ifdef NEW_LOGGING
 745         LDAP_LOG( OPERATION, ARGS,
 746                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 747                 op->o_connid,
 748                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 749                 0 );
 750 #else
 751         Debug( LDAP_DEBUG_ARGS,
 752                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 753                 op->o_connid,
 754                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 755                 0 );
 756 #endif
 757
 758         if( ctrl->ldctl_value.bv_len == 0 ) {
 759 #ifdef NEW_LOGGING
 760                 LDAP_LOG( OPERATION, RESULTS,
 761                         "parseProxyAuthz: conn=%lu anonymous\n",
 762                         op->o_connid, 0, 0 );
 763 #else
 764                 Debug( LDAP_DEBUG_TRACE,
 765                         "parseProxyAuthz: conn=%lu anonymous\n",
 766                         op->o_connid, 0, 0 );
 767 #endif
 768
 769                 /* anonymous */
 770                 free( op->o_dn.bv_val );
 771                 op->o_dn.bv_len = 0;
 772                 op->o_dn.bv_val = ch_strdup( "" );
 773
 774                 free( op->o_ndn.bv_val );
 775                 op->o_ndn.bv_len = 0;
 776                 op->o_ndn.bv_val = ch_strdup( "" );
 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 #ifdef NEW_LOGGING
 794         LDAP_LOG( OPERATION, RESULTS,
 795                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 796                 op->o_connid,
 797                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 798 #else
 799         Debug( LDAP_DEBUG_TRACE,
 800                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 801                 op->o_connid,
 802                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 803 #endif
 804
 805         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 806
 807         if( rc ) {
 808                 ch_free( dn.bv_val );
 809                 rs->sr_text = "not authorized to assume identity";
 810                 return LDAP_PROXY_AUTHZ_FAILURE;
 811         }
 812
 813         ch_free( op->o_dn.bv_val );
 814         ch_free( op->o_ndn.bv_val );
 815
 816         op->o_dn.bv_val = NULL;
 817         op->o_ndn = dn;
 818
 819         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu PROXYAUTHZ dn=\"%s\"\n",
 820             op->o_connid, op->o_opid, dn.bv_val, 0, 0 );
 821
 822         /*
 823          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 824          * from now on op->o_dn is normalized
 825          */
 826         ber_dupbv( &op->o_dn, &dn );
 827
 828         return LDAP_SUCCESS;
 829 }
 830
 831 static int parseNoOp (
 832         Operation *op,
 833         SlapReply *rs,
 834         LDAPControl *ctrl )
 835 {
 836         if ( op->o_noop != SLAP_NO_CONTROL ) {
 837                 rs->sr_text = "noop control specified multiple times";
 838                 return LDAP_PROTOCOL_ERROR;
 839         }
 840
 841         if ( ctrl->ldctl_value.bv_len ) {
 842                 rs->sr_text = "noop control value not empty";
 843                 return LDAP_PROTOCOL_ERROR;
 844         }
 845
 846         op->o_noop = ctrl->ldctl_iscritical
 847                 ? SLAP_CRITICAL_CONTROL
 848                 : SLAP_NONCRITICAL_CONTROL;
 849
 850         return LDAP_SUCCESS;
 851 }
 852
 853 static int parsePagedResults (
 854         Operation *op,
 855         SlapReply *rs,
 856         LDAPControl *ctrl )
 857 {
 858         ber_tag_t tag;
 859         ber_int_t size;
 860         BerElement *ber;
 861         struct berval cookie = BER_BVNULL;
 862
 863         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 864                 rs->sr_text = "paged results control specified multiple times";
 865                 return LDAP_PROTOCOL_ERROR;
 866         }
 867
 868         if ( op->o_sync != SLAP_NO_CONTROL ) {
 869                 rs->sr_text = "paged results control specified with sync control";
 870                 return LDAP_PROTOCOL_ERROR;
 871         }
 872
 873         if ( ctrl->ldctl_value.bv_len == 0 ) {
 874                 rs->sr_text = "paged results control value is empty (or absent)";
 875                 return LDAP_PROTOCOL_ERROR;
 876         }
 877
 878         /* Parse the control value
 879          *      realSearchControlValue ::= SEQUENCE {
 880          *              size    INTEGER (0..maxInt),
 881          *                              -- requested page size from client
 882          *                              -- result set size estimate from server
 883          *              cookie  OCTET STRING
 884          * }
 885          */
 886         ber = ber_init( &ctrl->ldctl_value );
 887         if( ber == NULL ) {
 888                 rs->sr_text = "internal error";
 889                 return LDAP_OTHER;
 890         }
 891
 892         tag = ber_scanf( ber, "{im}", &size, &cookie );
 893         (void) ber_free( ber, 1 );
 894
 895         if( tag == LBER_ERROR ) {
 896                 rs->sr_text = "paged results control could not be decoded";
 897                 return LDAP_PROTOCOL_ERROR;
 898         }
 899
 900         if( size < 0 ) {
 901                 rs->sr_text = "paged results control size invalid";
 902                 return LDAP_PROTOCOL_ERROR;
 903         }
 904
 905         /*
 906          * NOTE: according to RFC 2696 3.:
 907          *
 908              If the page size is greater than or equal to the sizeLimit value, the
 909              server should ignore the control as the request can be satisfied in a
 910              single page.
 911          *
 912          * NOTE: this assumes that the op->ors_slimit be set before the controls
 913          * are parsed.
 914          */
 915         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 916                 return SLAP_CTRL_IGNORE;
 917         }
 918
 919         if( cookie.bv_len ) {
 920                 PagedResultsCookie reqcookie;
 921                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 922                         /* bad cookie */
 923                         rs->sr_text = "paged results cookie is invalid";
 924                         return LDAP_PROTOCOL_ERROR;
 925                 }
 926
 927                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 928
 929                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 930                         /* bad cookie */
 931                         rs->sr_text = "paged results cookie is invalid";
 932                         return LDAP_PROTOCOL_ERROR;
 933
 934                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 935                         rs->sr_text = "paged results cookie is invalid or old";
 936                         return LDAP_UNWILLING_TO_PERFORM;
 937                 }
 938
 939         } else {
 940                 /* Initial request.  Initialize state. */
 941                 op->o_pagedresults_state.ps_cookie = 0;
 942                 op->o_pagedresults_state.ps_count = 0;
 943         }
 944
 945         op->o_pagedresults_size = size;
 946
 947         op->o_pagedresults = ctrl->ldctl_iscritical
 948                 ? SLAP_CRITICAL_CONTROL
 949                 : SLAP_NONCRITICAL_CONTROL;
 950
 951         return LDAP_SUCCESS;
 952 }
 953
 954 static int parseAssert (
 955         Operation *op,
 956         SlapReply *rs,
 957         LDAPControl *ctrl )
 958 {
 959         BerElement      *ber;
 960         struct berval   fstr = BER_BVNULL;
 961         const char *err_msg = "";
 962
 963         if ( op->o_assert != SLAP_NO_CONTROL ) {
 964                 rs->sr_text = "assert control specified multiple times";
 965                 return LDAP_PROTOCOL_ERROR;
 966         }
 967
 968         if ( ctrl->ldctl_value.bv_len == 0 ) {
 969                 rs->sr_text = "assert control value is empty (or absent)";
 970                 return LDAP_PROTOCOL_ERROR;
 971         }
 972
 973         ber = ber_init( &(ctrl->ldctl_value) );
 974         if (ber == NULL) {
 975                 rs->sr_text = "assert control: internal error";
 976                 return LDAP_OTHER;
 977         }
 978
 979         rs->sr_err = get_filter( op, ber, &(op->o_assertion), &rs->sr_text);
 980
 981         if( rs->sr_err != LDAP_SUCCESS ) {
 982                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 983                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 984                         send_ldap_disconnect( op, rs );
 985                         rs->sr_err = SLAPD_DISCONNECT;
 986                 } else {
 987                         send_ldap_result( op, rs );
 988                 }
 989                 if( op->o_assertion != NULL ) {
 990                         filter_free_x( op, op->o_assertion );
 991                 }
 992                 return rs->sr_err;
 993         }
 994
 995 #ifdef LDAP_DEBUG
 996         filter2bv_x( op, op->o_assertion, &fstr );
 997
 998 #ifdef NEW_LOGGING
 999         LDAP_LOG( OPERATION, ARGS,
1000                 "parseAssert: conn %ld assert: %s\n",
1001                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1002 #else
1003         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1004                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1005 #endif
1006         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1007 #endif
1008
1009         op->o_assert = ctrl->ldctl_iscritical
1010                 ? SLAP_CRITICAL_CONTROL
1011                 : SLAP_NONCRITICAL_CONTROL;
1012
1013         rs->sr_err = LDAP_SUCCESS;
1014         return LDAP_SUCCESS;
1015 }
1016
1017 static int parsePreRead (
1018         Operation *op,
1019         SlapReply *rs,
1020         LDAPControl *ctrl )
1021 {
1022         ber_len_t siz, off, i;
1023         AttributeName *an = NULL;
1024         BerElement      *ber;
1025
1026         if ( op->o_preread != SLAP_NO_CONTROL ) {
1027                 rs->sr_text = "preread control specified multiple times";
1028                 return LDAP_PROTOCOL_ERROR;
1029         }
1030
1031         if ( ctrl->ldctl_value.bv_len == 0 ) {
1032                 rs->sr_text = "preread control value is empty (or absent)";
1033                 return LDAP_PROTOCOL_ERROR;
1034         }
1035
1036         ber = ber_init( &(ctrl->ldctl_value) );
1037         if (ber == NULL) {
1038                 rs->sr_text = "preread control: internal error";
1039                 return LDAP_OTHER;
1040         }
1041
1042         siz = sizeof( AttributeName );
1043         off = offsetof( AttributeName, an_name );
1044         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1045                 rs->sr_text = "preread control: decoding error";
1046                 return LDAP_PROTOCOL_ERROR;
1047         }
1048
1049         for( i=0; i<siz; i++ ) {
1050                 int             rc = LDAP_SUCCESS;
1051                 const char      *dummy = NULL;
1052
1053                 an[i].an_desc = NULL;
1054                 an[i].an_oc = NULL;
1055                 an[i].an_oc_exclude = 0;
1056                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1057                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1058                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1059                         return rc;
1060                 }
1061         }
1062
1063         op->o_preread = ctrl->ldctl_iscritical
1064                 ? SLAP_CRITICAL_CONTROL
1065                 : SLAP_NONCRITICAL_CONTROL;
1066
1067         op->o_preread_attrs = an;
1068
1069         rs->sr_err = LDAP_SUCCESS;
1070         return LDAP_SUCCESS;
1071 }
1072
1073 static int parsePostRead (
1074         Operation *op,
1075         SlapReply *rs,
1076         LDAPControl *ctrl )
1077 {
1078         ber_len_t siz, off, i;
1079         AttributeName *an = NULL;
1080         BerElement      *ber;
1081
1082         if ( op->o_postread != SLAP_NO_CONTROL ) {
1083                 rs->sr_text = "postread control specified multiple times";
1084                 return LDAP_PROTOCOL_ERROR;
1085         }
1086
1087         if ( ctrl->ldctl_value.bv_len == 0 ) {
1088                 rs->sr_text = "postread control value is empty (or absent)";
1089                 return LDAP_PROTOCOL_ERROR;
1090         }
1091
1092         ber = ber_init( &(ctrl->ldctl_value) );
1093         if (ber == NULL) {
1094                 rs->sr_text = "postread control: internal error";
1095                 return LDAP_OTHER;
1096         }
1097
1098         siz = sizeof( AttributeName );
1099         off = offsetof( AttributeName, an_name );
1100         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1101                 rs->sr_text = "postread control: decoding error";
1102                 return LDAP_PROTOCOL_ERROR;
1103         }
1104
1105         for( i=0; i<siz; i++ ) {
1106                 int             rc = LDAP_SUCCESS;
1107                 const char      *dummy = NULL;
1108
1109                 an[i].an_desc = NULL;
1110                 an[i].an_oc = NULL;
1111                 an[i].an_oc_exclude = 0;
1112                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1113                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1114                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1115                         return rc;
1116                 }
1117         }
1118
1119         op->o_postread = ctrl->ldctl_iscritical
1120                 ? SLAP_CRITICAL_CONTROL
1121                 : SLAP_NONCRITICAL_CONTROL;
1122
1123         op->o_postread_attrs = an;
1124
1125         rs->sr_err = LDAP_SUCCESS;
1126         return LDAP_SUCCESS;
1127 }
1128
1129 int parseValuesReturnFilter (
1130         Operation *op,
1131         SlapReply *rs,
1132         LDAPControl *ctrl )
1133 {
1134         BerElement      *ber;
1135         struct berval   fstr = BER_BVNULL;
1136         const char *err_msg = "";
1137
1138         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
1139                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1140                 return LDAP_PROTOCOL_ERROR;
1141         }
1142
1143         if ( ctrl->ldctl_value.bv_len == 0 ) {
1144                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1145                 return LDAP_PROTOCOL_ERROR;
1146         }
1147
1148         ber = ber_init( &(ctrl->ldctl_value) );
1149         if (ber == NULL) {
1150                 rs->sr_text = "internal error";
1151                 return LDAP_OTHER;
1152         }
1153
1154         rs->sr_err = get_vrFilter( op, ber, &(op->o_vrFilter), &rs->sr_text);
1155
1156         if( rs->sr_err != LDAP_SUCCESS ) {
1157                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1158                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1159                         send_ldap_disconnect( op, rs );
1160                         rs->sr_err = SLAPD_DISCONNECT;
1161                 } else {
1162                         send_ldap_result( op, rs );
1163                 }
1164                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1165         }
1166 #ifdef LDAP_DEBUG
1167         else {
1168                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1169         }
1170
1171 #ifdef NEW_LOGGING
1172         LDAP_LOG( OPERATION, ARGS,
1173                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
1174                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1175 #else
1176         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1177                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1178 #endif
1179         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1180 #endif
1181
1182         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1183                 ? SLAP_CRITICAL_CONTROL
1184                 : SLAP_NONCRITICAL_CONTROL;
1185
1186         rs->sr_err = LDAP_SUCCESS;
1187         return LDAP_SUCCESS;
1188 }
1189
1190 #ifdef LDAP_CONTROL_SUBENTRIES
1191 static int parseSubentries (
1192         Operation *op,
1193         SlapReply *rs,
1194         LDAPControl *ctrl )
1195 {
1196         if ( op->o_subentries != SLAP_NO_CONTROL ) {
1197                 rs->sr_text = "subentries control specified multiple times";
1198                 return LDAP_PROTOCOL_ERROR;
1199         }
1200
1201         /* FIXME: should use BER library */
1202         if( ( ctrl->ldctl_value.bv_len != 3 )
1203                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1204                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1205         {
1206                 rs->sr_text = "subentries control value encoding is bogus";
1207                 return LDAP_PROTOCOL_ERROR;
1208         }
1209
1210         op->o_subentries = ctrl->ldctl_iscritical
1211                 ? SLAP_CRITICAL_CONTROL
1212                 : SLAP_NONCRITICAL_CONTROL;
1213
1214         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
1215
1216         return LDAP_SUCCESS;
1217 }
1218 #endif
1219
1220 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1221 static int parsePermissiveModify (
1222         Operation *op,
1223         SlapReply *rs,
1224         LDAPControl *ctrl )
1225 {
1226         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
1227                 rs->sr_text = "permissiveModify control specified multiple times";
1228                 return LDAP_PROTOCOL_ERROR;
1229         }
1230
1231         if ( ctrl->ldctl_value.bv_len ) {
1232                 rs->sr_text = "permissiveModify control value not empty";
1233                 return LDAP_PROTOCOL_ERROR;
1234         }
1235
1236         op->o_permissive_modify = ctrl->ldctl_iscritical
1237                 ? SLAP_CRITICAL_CONTROL
1238                 : SLAP_NONCRITICAL_CONTROL;
1239
1240         return LDAP_SUCCESS;
1241 }
1242 #endif
1243
1244 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1245 static int parseDomainScope (
1246         Operation *op,
1247         SlapReply *rs,
1248         LDAPControl *ctrl )
1249 {
1250         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1251                 rs->sr_text = "domainScope control specified multiple times";
1252                 return LDAP_PROTOCOL_ERROR;
1253         }
1254
1255         if ( ctrl->ldctl_value.bv_len ) {
1256                 rs->sr_text = "domainScope control value not empty";
1257                 return LDAP_PROTOCOL_ERROR;
1258         }
1259
1260         op->o_domain_scope = ctrl->ldctl_iscritical
1261                 ? SLAP_CRITICAL_CONTROL
1262                 : SLAP_NONCRITICAL_CONTROL;
1263
1264         return LDAP_SUCCESS;
1265 }
1266 #endif
1267
1268 #ifdef LDAP_CONTROL_X_TREE_DELETE
1269 static int parseTreeDelete (
1270         Operation *op,
1271         SlapReply *rs,
1272         LDAPControl *ctrl )
1273 {
1274         if ( op->o_tree_delete != SLAP_NO_CONTROL ) {
1275                 rs->sr_text = "treeDelete control specified multiple times";
1276                 return LDAP_PROTOCOL_ERROR;
1277         }
1278
1279         if ( ctrl->ldctl_value.bv_len ) {
1280                 rs->sr_text = "treeDelete control value not empty";
1281                 return LDAP_PROTOCOL_ERROR;
1282         }
1283
1284         op->o_tree_delete = ctrl->ldctl_iscritical
1285                 ? SLAP_CRITICAL_CONTROL
1286                 : SLAP_NONCRITICAL_CONTROL;
1287
1288         return LDAP_SUCCESS;
1289 }
1290 #endif
1291
1292 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1293 static int parseSearchOptions (
1294         Operation *op,
1295         SlapReply *rs,
1296         LDAPControl *ctrl )
1297 {
1298         BerElement *ber;
1299         ber_int_t search_flags;
1300
1301         if ( ctrl->ldctl_value.bv_len == 0 ) {
1302                 rs->sr_text = "searchOptions control value not empty";
1303                 return LDAP_PROTOCOL_ERROR;
1304         }
1305
1306         ber = ber_init( &ctrl->ldctl_value );
1307         if( ber == NULL ) {
1308                 rs->sr_text = "internal error";
1309                 return LDAP_OTHER;
1310         }
1311
1312         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1313                 rs->sr_text = "searchOptions control decoding error";
1314                 return LDAP_PROTOCOL_ERROR;
1315         }
1316
1317         (void) ber_free( ber, 1 );
1318
1319         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1320                 if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1321                         rs->sr_text = "searchOptions control specified multiple times "
1322                                 "or with domainScope control";
1323                         return LDAP_PROTOCOL_ERROR;
1324                 }
1325
1326                 op->o_domain_scope = ctrl->ldctl_iscritical
1327                         ? SLAP_CRITICAL_CONTROL
1328                         : SLAP_NONCRITICAL_CONTROL;
1329         }
1330
1331         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1332                 /* Other search flags not recognised so far */
1333                 rs->sr_text = "searchOptions contained unrecongized flag";
1334                 return LDAP_UNWILLING_TO_PERFORM;
1335         }
1336
1337         return LDAP_SUCCESS;
1338 }
1339 #endif
1340
1341 static int parseLDAPsync (
1342         Operation *op,
1343         SlapReply *rs,
1344         LDAPControl *ctrl )
1345 {
1346         ber_tag_t tag;
1347         BerElement *ber;
1348         ber_int_t mode;
1349         ber_len_t len;
1350         struct slap_session_entry *se;
1351
1352         if ( op->o_sync != SLAP_NO_CONTROL ) {
1353                 rs->sr_text = "Sync control specified multiple times";
1354                 return LDAP_PROTOCOL_ERROR;
1355         }
1356
1357         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
1358                 rs->sr_text = "Sync control specified with pagedResults control";
1359                 return LDAP_PROTOCOL_ERROR;
1360         }
1361
1362
1363         if ( ctrl->ldctl_value.bv_len == 0 ) {
1364                 rs->sr_text = "Sync control value is empty (or absent)";
1365                 return LDAP_PROTOCOL_ERROR;
1366         }
1367
1368         /* Parse the control value
1369          *      syncRequestValue ::= SEQUENCE {
1370          *              mode   ENUMERATED {
1371          *                      -- 0 unused
1372          *                      refreshOnly             (1),
1373          *                      -- 2 reserved
1374          *                      refreshAndPersist       (3)
1375          *              },
1376          *              cookie  syncCookie OPTIONAL
1377          *      }
1378          */
1379
1380         ber = ber_init( &ctrl->ldctl_value );
1381         if( ber == NULL ) {
1382                 rs->sr_text = "internal error";
1383                 return LDAP_OTHER;
1384         }
1385
1386         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1387                 rs->sr_text = "Sync control : mode decoding error";
1388                 return LDAP_PROTOCOL_ERROR;
1389         }
1390
1391         switch( mode ) {
1392         case LDAP_SYNC_REFRESH_ONLY:
1393                 mode = SLAP_SYNC_REFRESH;
1394                 break;
1395         case LDAP_SYNC_REFRESH_AND_PERSIST:
1396                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1397                 break;
1398         default:
1399                 rs->sr_text = "Sync control : unknown update mode";
1400                 return LDAP_PROTOCOL_ERROR;
1401         }
1402
1403         tag = ber_peek_tag( ber, &len );
1404
1405         if ( tag == LDAP_TAG_SYNC_COOKIE ) {
1406                 struct berval tmp_bv;
1407                 if (( ber_scanf( ber, /*{*/ "o", &tmp_bv )) == LBER_ERROR ) {
1408                         rs->sr_text = "Sync control : cookie decoding error";
1409                         return LDAP_PROTOCOL_ERROR;
1410                 }
1411                 ber_bvarray_add( &op->o_sync_state.octet_str, &tmp_bv );
1412                 slap_parse_sync_cookie( &op->o_sync_state );
1413         }
1414         if ( tag == LDAP_TAG_RELOAD_HINT ) {
1415                 if (( ber_scanf( ber, /*{*/ "b", &op->o_sync_rhint )) == LBER_ERROR ) {
1416                         rs->sr_text = "Sync control : rhint decoding error";
1417                         return LDAP_PROTOCOL_ERROR;
1418                 }
1419         }
1420         if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1421                         rs->sr_text = "Sync control : decoding error";
1422                         return LDAP_PROTOCOL_ERROR;
1423         }
1424
1425         (void) ber_free( ber, 1 );
1426
1427         op->o_sync_mode = (char) mode;
1428
1429         op->o_sync = ctrl->ldctl_iscritical
1430                 ? SLAP_CRITICAL_CONTROL
1431                 : SLAP_NONCRITICAL_CONTROL;
1432
1433         return LDAP_SUCCESS;
1434 }