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 ) return LDAP_PARAM_ERROR;
 158
 159         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 160         if ( sc == NULL ) return LDAP_NO_MEMORY;
 161
 162         sc->sc_oid = ch_strdup( controloid );
 163         sc->sc_mask = controlmask;
 164         if ( controlexops != NULL ) {
 165                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 166                 if ( sc->sc_extendedops == NULL ) {
 167                         ch_free( sc );
 168                         return LDAP_NO_MEMORY;
 169                 }
 170         } else {
 171                 sc->sc_extendedops = NULL;
 172         }
 173         sc->sc_parse = controlparsefn;
 174
 175         /* Update slap_known_controls, too. */
 176         if ( slap_known_controls == NULL ) {
 177                 slap_known_controls = (char **)SLAP_MALLOC( 2 * sizeof(char *) );
 178                 if ( slap_known_controls == NULL ) {
 179                         if ( sc->sc_extendedops != NULL ) {
 180                                 ldap_charray_free( sc->sc_extendedops );
 181                         }
 182                         ch_free( sc );
 183                         return LDAP_NO_MEMORY;
 184                 }
 185                 slap_known_controls[0] = ch_strdup( sc->sc_oid );
 186                 slap_known_controls[1] = NULL;
 187
 188         } else {
 189                 char **new_known_controls;
 190
 191                 for ( i = 0; slap_known_controls[i] != NULL; i++ ) {
 192                         /* EMPTY */ ;
 193                 }
 194
 195                 new_known_controls = (char **)SLAP_REALLOC(
 196                         slap_known_controls, (i + 2) * sizeof(char *) );
 197
 198                 if ( new_known_controls == NULL ) {
 199                         if ( sc->sc_extendedops != NULL ) {
 200                                 ldap_charray_free( sc->sc_extendedops );
 201                         }
 202                         ch_free( sc );
 203                         return LDAP_NO_MEMORY;
 204                 }
 205                 slap_known_controls = new_known_controls;
 206                 slap_known_controls[i++] = ch_strdup( sc->sc_oid );
 207                 slap_known_controls[i] = NULL;
 208         }
 209
 210         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 211         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 212         return LDAP_SUCCESS;
 213 }
 214
 215 /*
 216  * One-time initialization of internal controls.
 217  */
 218 int
 219 slap_controls_init( void )
 220 {
 221         int i, rc;
 222         struct slap_control *sc;
 223
 224         rc = LDAP_SUCCESS;
 225
 226         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 227                 rc = register_supported_control( control_defs[i].sc_oid,
 228                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 229                         control_defs[i].sc_parse );
 230                 if ( rc != LDAP_SUCCESS ) break;
 231         }
 232
 233         return rc;
 234 }
 235
 236 /*
 237  * Free memory associated with list of supported controls.
 238  */
 239 void
 240 controls_destroy( void )
 241 {
 242         struct slap_control *sc;
 243
 244         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 245                 sc = LDAP_SLIST_FIRST(&controls_list);
 246                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 247
 248                 ch_free( sc->sc_oid );
 249                 if ( sc->sc_extendedops != NULL ) {
 250                         ldap_charray_free( sc->sc_extendedops );
 251                 }
 252                 ch_free( sc );
 253         }
 254         ldap_charray_free( slap_known_controls );
 255 }
 256
 257 /*
 258  * Format the supportedControl attribute of the root DSE,
 259  * detailing which controls are supported by the directory
 260  * server.
 261  */
 262 int
 263 controls_root_dse_info( Entry *e )
 264 {
 265         AttributeDescription *ad_supportedControl
 266                 = slap_schema.si_ad_supportedControl;
 267         struct berval vals[2];
 268         struct slap_control *sc;
 269
 270         vals[1].bv_val = NULL;
 271         vals[1].bv_len = 0;
 272
 273         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 274                 if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
 275
 276                 vals[0].bv_val = sc->sc_oid;
 277                 vals[0].bv_len = strlen( sc->sc_oid );
 278
 279                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
 280                         return -1;
 281                 }
 282         }
 283
 284         return 0;
 285 }
 286
 287 /*
 288  * Return a list of OIDs and operation masks for supported
 289  * controls. Used by SLAPI.
 290  */
 291 int
 292 get_supported_controls(char ***ctrloidsp,
 293         slap_mask_t **ctrlmasks)
 294 {
 295         int i, n;
 296         char **oids;
 297         slap_mask_t *masks;
 298         int rc;
 299         struct slap_control *sc;
 300
 301         n = 0;
 302
 303         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 304                 n++;
 305         }
 306
 307         if ( n == 0 ) {
 308                 *ctrloidsp = NULL;
 309                 *ctrlmasks = NULL;
 310                 return LDAP_SUCCESS;
 311         }
 312
 313         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 314         if ( oids == NULL ) {
 315                 return LDAP_NO_MEMORY;
 316         }
 317         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 318         if  ( masks == NULL ) {
 319                 ch_free( oids );
 320                 return LDAP_NO_MEMORY;
 321         }
 322
 323         n = 0;
 324
 325         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 326                 oids[n] = ch_strdup( sc->sc_oid );
 327                 masks[n] = sc->sc_mask;
 328                 n++;
 329         }
 330         oids[n] = NULL;
 331         masks[n] = 0;
 332
 333         *ctrloidsp = oids;
 334         *ctrlmasks = masks;
 335
 336         return LDAP_SUCCESS;
 337 }
 338
 339 /*
 340  * Find a control given its OID.
 341  */
 342 static struct slap_control *
 343 find_ctrl( const char *oid )
 344 {
 345         struct slap_control *sc;
 346
 347         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 348                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 349                         return sc;
 350                 }
 351         }
 352
 353         return NULL;
 354 }
 355
 356 void slap_free_ctrls(
 357         Operation *op,
 358         LDAPControl **ctrls )
 359 {
 360         int i;
 361
 362         for (i=0; ctrls[i]; i++) {
 363                 op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
 364         }
 365         op->o_tmpfree( ctrls, op->o_tmpmemctx );
 366 }
 367
 368 int get_ctrls(
 369         Operation *op,
 370         SlapReply *rs,
 371         int sendres )
 372 {
 373         int nctrls = 0;
 374         ber_tag_t tag;
 375         ber_len_t len;
 376         char *opaque;
 377         BerElement *ber = op->o_ber;
 378         struct slap_control *sc;
 379         struct berval bv;
 380
 381         len = ber_pvt_ber_remaining(ber);
 382
 383         if( len == 0) {
 384                 /* no controls */
 385                 rs->sr_err = LDAP_SUCCESS;
 386                 return rs->sr_err;
 387         }
 388
 389         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 390                 if( tag == LBER_ERROR ) {
 391                         rs->sr_err = SLAPD_DISCONNECT;
 392                         rs->sr_text = "unexpected data in PDU";
 393                 }
 394
 395                 goto return_results;
 396         }
 397
 398 #ifdef NEW_LOGGING
 399         LDAP_LOG( OPERATION, ENTRY,
 400                 "get_ctrls: conn %lu\n", op->o_connid, 0, 0 );
 401 #else
 402         Debug( LDAP_DEBUG_TRACE,
 403                 "=> get_ctrls\n", 0, 0, 0 );
 404 #endif
 405
 406         if( op->o_protocol < LDAP_VERSION3 ) {
 407                 rs->sr_err = SLAPD_DISCONNECT;
 408                 rs->sr_text = "controls require LDAPv3";
 409                 goto return_results;
 410         }
 411
 412         /* one for first control, one for termination */
 413         op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 414
 415 #if 0
 416         if( op->ctrls == NULL ) {
 417                 rs->sr_err = LDAP_NO_MEMORY;
 418                 rs->sr_text = "no memory";
 419                 goto return_results;
 420         }
 421 #endif
 422
 423         op->o_ctrls[nctrls] = NULL;
 424
 425         /* step through each element */
 426         for( tag = ber_first_element( ber, &len, &opaque );
 427                 tag != LBER_ERROR;
 428                 tag = ber_next_element( ber, &len, opaque ) )
 429         {
 430                 LDAPControl *c;
 431                 LDAPControl **tctrls;
 432
 433                 c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
 434                 memset(c, 0, sizeof(LDAPControl));
 435
 436                 /* allocate pointer space for current controls (nctrls)
 437                  * + this control + extra NULL
 438                  */
 439                 tctrls = op->o_tmprealloc( op->o_ctrls,
 440                         (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 441
 442 #if 0
 443                 if( tctrls == NULL ) {
 444                         ch_free( c );
 445                         ldap_controls_free(op->o_ctrls);
 446                         op->o_ctrls = NULL;
 447
 448                         rs->sr_err = LDAP_NO_MEMORY;
 449                         rs->sr_text = "no memory";
 450                         goto return_results;
 451                 }
 452 #endif
 453                 op->o_ctrls = tctrls;
 454
 455                 op->o_ctrls[nctrls++] = c;
 456                 op->o_ctrls[nctrls] = NULL;
 457
 458                 tag = ber_scanf( ber, "{m" /*}*/, &bv );
 459                 c->ldctl_oid = bv.bv_val;
 460
 461                 if( tag == LBER_ERROR ) {
 462 #ifdef NEW_LOGGING
 463                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 464                                 op->o_connid, 0, 0 );
 465 #else
 466                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 467                                 0, 0, 0 );
 468 #endif
 469
 470                         slap_free_ctrls( op, op->o_ctrls );
 471                         op->o_ctrls = NULL;
 472                         rs->sr_err = SLAPD_DISCONNECT;
 473                         rs->sr_text = "decoding controls error";
 474                         goto return_results;
 475
 476                 } else if( c->ldctl_oid == NULL ) {
 477 #ifdef NEW_LOGGING
 478                         LDAP_LOG( OPERATION, INFO,
 479                                 "get_ctrls: conn %lu got emtpy OID.\n",
 480                                 op->o_connid, 0, 0 );
 481 #else
 482                         Debug( LDAP_DEBUG_TRACE,
 483                                 "get_ctrls: conn %lu got emtpy OID.\n",
 484                                 op->o_connid, 0, 0 );
 485 #endif
 486
 487                         slap_free_ctrls( op, op->o_ctrls );
 488                         op->o_ctrls = NULL;
 489                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 490                         rs->sr_text = "OID field is empty";
 491                         goto return_results;
 492                 }
 493
 494                 tag = ber_peek_tag( ber, &len );
 495
 496                 if( tag == LBER_BOOLEAN ) {
 497                         ber_int_t crit;
 498                         tag = ber_scanf( ber, "b", &crit );
 499
 500                         if( tag == LBER_ERROR ) {
 501 #ifdef NEW_LOGGING
 502                                 LDAP_LOG( OPERATION, INFO,
 503                                         "get_ctrls: conn %lu get crit failed.\n",
 504                                         op->o_connid, 0, 0 );
 505 #else
 506                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 507                                         0, 0, 0 );
 508 #endif
 509                                 slap_free_ctrls( op, op->o_ctrls );
 510                                 op->o_ctrls = NULL;
 511                                 rs->sr_err = SLAPD_DISCONNECT;
 512                                 rs->sr_text = "decoding controls error";
 513                                 goto return_results;
 514                         }
 515
 516                         c->ldctl_iscritical = (crit != 0);
 517                         tag = ber_peek_tag( ber, &len );
 518                 }
 519
 520                 if( tag == LBER_OCTETSTRING ) {
 521                         tag = ber_scanf( ber, "m", &c->ldctl_value );
 522
 523                         if( tag == LBER_ERROR ) {
 524 #ifdef NEW_LOGGING
 525                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 526                                         "%s (%scritical): get value failed.\n",
 527                                         op->o_connid, c->ldctl_oid,
 528                                         c->ldctl_iscritical ? "" : "non" );
 529 #else
 530                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 531                                         "%s (%scritical): get value failed.\n",
 532                                         op->o_connid, c->ldctl_oid,
 533                                         c->ldctl_iscritical ? "" : "non" );
 534 #endif
 535                                 slap_free_ctrls( op, op->o_ctrls );
 536                                 op->o_ctrls = NULL;
 537                                 rs->sr_err = SLAPD_DISCONNECT;
 538                                 rs->sr_text = "decoding controls error";
 539                                 goto return_results;
 540                         }
 541                 }
 542
 543 #ifdef NEW_LOGGING
 544                 LDAP_LOG( OPERATION, INFO,
 545                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 546                         op->o_connid, c->ldctl_oid, c->ldctl_iscritical ? "" : "non" );
 547 #else
 548                 Debug( LDAP_DEBUG_TRACE,
 549                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 550                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 551 #endif
 552
 553                 sc = find_ctrl( c->ldctl_oid );
 554                 if( sc != NULL ) {
 555                         /* recognized control */
 556                         slap_mask_t tagmask;
 557                         switch( op->o_tag ) {
 558                         case LDAP_REQ_ADD:
 559                                 tagmask = SLAP_CTRL_ADD;
 560                                 break;
 561                         case LDAP_REQ_BIND:
 562                                 tagmask = SLAP_CTRL_BIND;
 563                                 break;
 564                         case LDAP_REQ_COMPARE:
 565                                 tagmask = SLAP_CTRL_COMPARE;
 566                                 break;
 567                         case LDAP_REQ_DELETE:
 568                                 tagmask = SLAP_CTRL_DELETE;
 569                                 break;
 570                         case LDAP_REQ_MODIFY:
 571                                 tagmask = SLAP_CTRL_MODIFY;
 572                                 break;
 573                         case LDAP_REQ_RENAME:
 574                                 tagmask = SLAP_CTRL_RENAME;
 575                                 break;
 576                         case LDAP_REQ_SEARCH:
 577                                 tagmask = SLAP_CTRL_SEARCH;
 578                                 break;
 579                         case LDAP_REQ_UNBIND:
 580                                 tagmask = SLAP_CTRL_UNBIND;
 581                                 break;
 582                         case LDAP_REQ_ABANDON:
 583                                 tagmask = SLAP_CTRL_ABANDON;
 584                                 break;
 585                         case LDAP_REQ_EXTENDED:
 586                                 tagmask=~0L;
 587                                 assert( op->ore_reqoid.bv_val != NULL );
 588                                 if( sc->sc_extendedops != NULL ) {
 589                                         int i;
 590                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 591                                                 if( strcmp( op->ore_reqoid.bv_val,
 592                                                         sc->sc_extendedops[i] ) == 0 )
 593                                                 {
 594                                                         tagmask=0L;
 595                                                         break;
 596                                                 }
 597                                         }
 598                                 }
 599                                 break;
 600                         default:
 601                                 rs->sr_err = LDAP_OTHER;
 602                                 rs->sr_text = "controls internal error";
 603                                 goto return_results;
 604                         }
 605
 606                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 607                                 /* available extension */
 608                                 int     rc;
 609
 610                                 if( !sc->sc_parse ) {
 611                                         rs->sr_err = LDAP_OTHER;
 612                                         rs->sr_text = "not yet implemented";
 613                                         goto return_results;
 614                                 }
 615
 616                                 rc = sc->sc_parse( op, rs, c );
 617                                 if ( rc ) {
 618                                         assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 619                                         rs->sr_err = rc;
 620                                         goto return_results;
 621                                 }
 622
 623                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 624                                         /* kludge to disable backend_control() check */
 625                                         c->ldctl_iscritical = 0;
 626
 627                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 628                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 629                                 {
 630                                         /* kludge to disable backend_control() check */
 631                                         c->ldctl_iscritical = 0;
 632                                 }
 633
 634                         } else if( c->ldctl_iscritical ) {
 635                                 /* unavailable CRITICAL control */
 636                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 637                                 rs->sr_text = "critical extension is unavailable";
 638                                 goto return_results;
 639                         }
 640
 641                 } else if( c->ldctl_iscritical ) {
 642                         /* unrecognized CRITICAL control */
 643                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 644                         rs->sr_text = "critical extension is not recognized";
 645                         goto return_results;
 646                 }
 647 next_ctrl:;
 648         }
 649
 650 return_results:
 651 #ifdef NEW_LOGGING
 652         LDAP_LOG( OPERATION, RESULTS,
 653                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 654                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
 655 #else
 656         Debug( LDAP_DEBUG_TRACE,
 657                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 658                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 659 #endif
 660
 661         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 662                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 663                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 664                         send_ldap_disconnect( op, rs );
 665                         rs->sr_err = SLAPD_DISCONNECT;
 666                 } else {
 667                         send_ldap_result( op, rs );
 668                 }
 669         }
 670
 671         return rs->sr_err;
 672 }
 673
 674 static int parseModifyIncrement (
 675         Operation *op,
 676         SlapReply *rs,
 677         LDAPControl *ctrl )
 678 {
 679 #if 0
 680         if ( op->o_modifyIncrement != SLAP_NO_CONTROL ) {
 681                 rs->sr_text = "modifyIncrement control specified multiple times";
 682                 return LDAP_PROTOCOL_ERROR;
 683         }
 684 #endif
 685
 686         if ( ctrl->ldctl_value.bv_len ) {
 687                 rs->sr_text = "modifyIncrement control value not empty";
 688                 return LDAP_PROTOCOL_ERROR;
 689         }
 690
 691 #if 0
 692         op->o_modifyIncrement = ctrl->ldctl_iscritical
 693                 ? SLAP_CRITICAL_CONTROL
 694                 : SLAP_NONCRITICAL_CONTROL;
 695 #endif
 696
 697         return LDAP_SUCCESS;
 698 }
 699
 700 static int parseManageDSAit (
 701         Operation *op,
 702         SlapReply *rs,
 703         LDAPControl *ctrl )
 704 {
 705         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 706                 rs->sr_text = "manageDSAit control specified multiple times";
 707                 return LDAP_PROTOCOL_ERROR;
 708         }
 709
 710         if ( ctrl->ldctl_value.bv_len ) {
 711                 rs->sr_text = "manageDSAit control value not empty";
 712                 return LDAP_PROTOCOL_ERROR;
 713         }
 714
 715         op->o_managedsait = ctrl->ldctl_iscritical
 716                 ? SLAP_CRITICAL_CONTROL
 717                 : SLAP_NONCRITICAL_CONTROL;
 718
 719         return LDAP_SUCCESS;
 720 }
 721
 722 static int parseProxyAuthz (
 723         Operation *op,
 724         SlapReply *rs,
 725         LDAPControl *ctrl )
 726 {
 727         int             rc;
 728         struct berval   dn = BER_BVNULL;
 729
 730         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 731                 rs->sr_text = "proxy authorization control specified multiple times";
 732                 return LDAP_PROTOCOL_ERROR;
 733         }
 734
 735         op->o_proxy_authz = ctrl->ldctl_iscritical
 736                 ? SLAP_CRITICAL_CONTROL
 737                 : SLAP_NONCRITICAL_CONTROL;
 738
 739 #ifdef NEW_LOGGING
 740         LDAP_LOG( OPERATION, ARGS,
 741                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 742                 op->o_connid,
 743                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 744                 0 );
 745 #else
 746         Debug( LDAP_DEBUG_ARGS,
 747                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 748                 op->o_connid,
 749                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 750                 0 );
 751 #endif
 752
 753         if( ctrl->ldctl_value.bv_len == 0 ) {
 754 #ifdef NEW_LOGGING
 755                 LDAP_LOG( OPERATION, RESULTS,
 756                         "parseProxyAuthz: conn=%lu anonymous\n",
 757                         op->o_connid, 0, 0 );
 758 #else
 759                 Debug( LDAP_DEBUG_TRACE,
 760                         "parseProxyAuthz: conn=%lu anonymous\n",
 761                         op->o_connid, 0, 0 );
 762 #endif
 763
 764                 /* anonymous */
 765                 free( op->o_dn.bv_val );
 766                 op->o_dn.bv_len = 0;
 767                 op->o_dn.bv_val = ch_strdup( "" );
 768
 769                 free( op->o_ndn.bv_val );
 770                 op->o_ndn.bv_len = 0;
 771                 op->o_ndn.bv_val = ch_strdup( "" );
 772
 773                 return LDAP_SUCCESS;
 774         }
 775
 776         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 777                         NULL, &dn, SLAP_GETDN_AUTHZID );
 778
 779         /* FIXME: empty DN in proxyAuthz control should be legal... */
 780         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 781                 if ( dn.bv_val ) {
 782                         ch_free( dn.bv_val );
 783                 }
 784                 rs->sr_text = "authzId mapping failed";
 785                 return LDAP_PROXY_AUTHZ_FAILURE;
 786         }
 787
 788 #ifdef NEW_LOGGING
 789         LDAP_LOG( OPERATION, RESULTS,
 790                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 791                 op->o_connid,
 792                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 793 #else
 794         Debug( LDAP_DEBUG_TRACE,
 795                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 796                 op->o_connid,
 797                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 798 #endif
 799
 800         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 801
 802         if( rc ) {
 803                 ch_free( dn.bv_val );
 804                 rs->sr_text = "not authorized to assume identity";
 805                 return LDAP_PROXY_AUTHZ_FAILURE;
 806         }
 807
 808         ch_free( op->o_dn.bv_val );
 809         ch_free( op->o_ndn.bv_val );
 810
 811         op->o_dn.bv_val = NULL;
 812         op->o_ndn = dn;
 813
 814         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu PROXYAUTHZ dn=\"%s\"\n",
 815             op->o_connid, op->o_opid, dn.bv_val, 0, 0 );
 816
 817         /*
 818          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 819          * from now on op->o_dn is normalized
 820          */
 821         ber_dupbv( &op->o_dn, &dn );
 822
 823         return LDAP_SUCCESS;
 824 }
 825
 826 static int parseNoOp (
 827         Operation *op,
 828         SlapReply *rs,
 829         LDAPControl *ctrl )
 830 {
 831         if ( op->o_noop != SLAP_NO_CONTROL ) {
 832                 rs->sr_text = "noop control specified multiple times";
 833                 return LDAP_PROTOCOL_ERROR;
 834         }
 835
 836         if ( ctrl->ldctl_value.bv_len ) {
 837                 rs->sr_text = "noop control value not empty";
 838                 return LDAP_PROTOCOL_ERROR;
 839         }
 840
 841         op->o_noop = ctrl->ldctl_iscritical
 842                 ? SLAP_CRITICAL_CONTROL
 843                 : SLAP_NONCRITICAL_CONTROL;
 844
 845         return LDAP_SUCCESS;
 846 }
 847
 848 static int parsePagedResults (
 849         Operation *op,
 850         SlapReply *rs,
 851         LDAPControl *ctrl )
 852 {
 853         int             rc = LDAP_SUCCESS;
 854         ber_tag_t       tag;
 855         ber_int_t       size;
 856         BerElement      *ber;
 857         struct berval   cookie = BER_BVNULL;
 858
 859         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 860                 rs->sr_text = "paged results control specified multiple times";
 861                 return LDAP_PROTOCOL_ERROR;
 862         }
 863
 864         if ( op->o_sync != SLAP_NO_CONTROL ) {
 865                 rs->sr_text = "paged results control specified with sync control";
 866                 return LDAP_PROTOCOL_ERROR;
 867         }
 868
 869         if ( ctrl->ldctl_value.bv_len == 0 ) {
 870                 rs->sr_text = "paged results control value is empty (or absent)";
 871                 return LDAP_PROTOCOL_ERROR;
 872         }
 873
 874         /* Parse the control value
 875          *      realSearchControlValue ::= SEQUENCE {
 876          *              size    INTEGER (0..maxInt),
 877          *                              -- requested page size from client
 878          *                              -- result set size estimate from server
 879          *              cookie  OCTET STRING
 880          * }
 881          */
 882         ber = ber_init( &ctrl->ldctl_value );
 883         if ( ber == NULL ) {
 884                 rs->sr_text = "internal error";
 885                 return LDAP_OTHER;
 886         }
 887
 888         tag = ber_scanf( ber, "{im}", &size, &cookie );
 889
 890         if ( tag == LBER_ERROR ) {
 891                 rs->sr_text = "paged results control could not be decoded";
 892                 rc = LDAP_PROTOCOL_ERROR;
 893                 goto done;
 894         }
 895
 896         if ( size < 0 ) {
 897                 rs->sr_text = "paged results control size invalid";
 898                 rc = LDAP_PROTOCOL_ERROR;
 899                 goto done;
 900         }
 901
 902 #if 0
 903         /* defer cookie decoding/checks to backend... */
 904         if ( cookie.bv_len ) {
 905                 PagedResultsCookie reqcookie;
 906                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 907                         /* bad cookie */
 908                         rs->sr_text = "paged results cookie is invalid";
 909                         rc = LDAP_PROTOCOL_ERROR;
 910                         goto done;
 911                 }
 912
 913                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 914
 915                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 916                         /* bad cookie */
 917                         rs->sr_text = "paged results cookie is invalid";
 918                         rc = LDAP_PROTOCOL_ERROR;
 919                         goto done;
 920
 921                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 922                         rs->sr_text = "paged results cookie is invalid or old";
 923                         rc = LDAP_UNWILLING_TO_PERFORM;
 924                         goto done;
 925                 }
 926
 927         } else {
 928                 /* Initial request.  Initialize state. */
 929 #if 0
 930                 if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
 931                         /* There's another pagedResults control on the
 932                          * same connection; reject new pagedResults controls
 933                          * (allowed by RFC2696) */
 934                         rs->sr_text = "paged results cookie unavailable; try later";
 935                         rc = LDAP_UNWILLING_TO_PERFORM;
 936                         goto done;
 937                 }
 938 #endif
 939                 op->o_pagedresults_state.ps_cookie = 0;
 940                 op->o_pagedresults_state.ps_count = 0;
 941         }
 942 #endif
 943
 944         op->o_pagedresults_size = size;
 945
 946         /* NOTE: according to RFC 2696 3.:
 947
 948     If the page size is greater than or equal to the sizeLimit value, the
 949     server should ignore the control as the request can be satisfied in a
 950     single page.
 951
 952          * NOTE: this assumes that the op->ors_slimit be set
 953          * before the controls are parsed.
 954          */
 955         if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
 956                 op->o_pagedresults = SLAP_IGNORED_CONTROL;
 957
 958         } else if ( ctrl->ldctl_iscritical ) {
 959                 op->o_pagedresults = SLAP_CRITICAL_CONTROL;
 960
 961         } else {
 962                 op->o_pagedresults = SLAP_NONCRITICAL_CONTROL;
 963         }
 964
 965 done:;
 966         (void)ber_free( ber, 1 );
 967         return rc;
 968 }
 969
 970 static int parseAssert (
 971         Operation *op,
 972         SlapReply *rs,
 973         LDAPControl *ctrl )
 974 {
 975         BerElement      *ber;
 976         struct berval   fstr = BER_BVNULL;
 977         const char *err_msg = "";
 978
 979         if ( op->o_assert != SLAP_NO_CONTROL ) {
 980                 rs->sr_text = "assert control specified multiple times";
 981                 return LDAP_PROTOCOL_ERROR;
 982         }
 983
 984         if ( ctrl->ldctl_value.bv_len == 0 ) {
 985                 rs->sr_text = "assert control value is empty (or absent)";
 986                 return LDAP_PROTOCOL_ERROR;
 987         }
 988
 989         ber = ber_init( &(ctrl->ldctl_value) );
 990         if (ber == NULL) {
 991                 rs->sr_text = "assert control: internal error";
 992                 return LDAP_OTHER;
 993         }
 994
 995         rs->sr_err = get_filter( op, ber, &(op->o_assertion), &rs->sr_text);
 996
 997         if( rs->sr_err != LDAP_SUCCESS ) {
 998                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 999                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1000                         send_ldap_disconnect( op, rs );
1001                         rs->sr_err = SLAPD_DISCONNECT;
1002                 } else {
1003                         send_ldap_result( op, rs );
1004                 }
1005                 if( op->o_assertion != NULL ) {
1006                         filter_free_x( op, op->o_assertion );
1007                 }
1008                 return rs->sr_err;
1009         }
1010
1011 #ifdef LDAP_DEBUG
1012         filter2bv_x( op, op->o_assertion, &fstr );
1013
1014 #ifdef NEW_LOGGING
1015         LDAP_LOG( OPERATION, ARGS,
1016                 "parseAssert: conn %ld assert: %s\n",
1017                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1018 #else
1019         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
1020                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1021 #endif
1022         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1023 #endif
1024
1025         op->o_assert = ctrl->ldctl_iscritical
1026                 ? SLAP_CRITICAL_CONTROL
1027                 : SLAP_NONCRITICAL_CONTROL;
1028
1029         rs->sr_err = LDAP_SUCCESS;
1030         return LDAP_SUCCESS;
1031 }
1032
1033 static int parsePreRead (
1034         Operation *op,
1035         SlapReply *rs,
1036         LDAPControl *ctrl )
1037 {
1038         ber_len_t siz, off, i;
1039         AttributeName *an = NULL;
1040         BerElement      *ber;
1041
1042         if ( op->o_preread != SLAP_NO_CONTROL ) {
1043                 rs->sr_text = "preread control specified multiple times";
1044                 return LDAP_PROTOCOL_ERROR;
1045         }
1046
1047         if ( ctrl->ldctl_value.bv_len == 0 ) {
1048                 rs->sr_text = "preread control value is empty (or absent)";
1049                 return LDAP_PROTOCOL_ERROR;
1050         }
1051
1052         ber = ber_init( &(ctrl->ldctl_value) );
1053         if (ber == NULL) {
1054                 rs->sr_text = "preread control: internal error";
1055                 return LDAP_OTHER;
1056         }
1057
1058         siz = sizeof( AttributeName );
1059         off = offsetof( AttributeName, an_name );
1060         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1061                 rs->sr_text = "preread control: decoding error";
1062                 return LDAP_PROTOCOL_ERROR;
1063         }
1064
1065         for( i=0; i<siz; i++ ) {
1066                 int             rc = LDAP_SUCCESS;
1067                 const char      *dummy = NULL;
1068
1069                 an[i].an_desc = NULL;
1070                 an[i].an_oc = NULL;
1071                 an[i].an_oc_exclude = 0;
1072                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1073                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1074                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1075                         return rc;
1076                 }
1077         }
1078
1079         op->o_preread = ctrl->ldctl_iscritical
1080                 ? SLAP_CRITICAL_CONTROL
1081                 : SLAP_NONCRITICAL_CONTROL;
1082
1083         op->o_preread_attrs = an;
1084
1085         rs->sr_err = LDAP_SUCCESS;
1086         return LDAP_SUCCESS;
1087 }
1088
1089 static int parsePostRead (
1090         Operation *op,
1091         SlapReply *rs,
1092         LDAPControl *ctrl )
1093 {
1094         ber_len_t siz, off, i;
1095         AttributeName *an = NULL;
1096         BerElement      *ber;
1097
1098         if ( op->o_postread != SLAP_NO_CONTROL ) {
1099                 rs->sr_text = "postread control specified multiple times";
1100                 return LDAP_PROTOCOL_ERROR;
1101         }
1102
1103         if ( ctrl->ldctl_value.bv_len == 0 ) {
1104                 rs->sr_text = "postread control value is empty (or absent)";
1105                 return LDAP_PROTOCOL_ERROR;
1106         }
1107
1108         ber = ber_init( &(ctrl->ldctl_value) );
1109         if (ber == NULL) {
1110                 rs->sr_text = "postread control: internal error";
1111                 return LDAP_OTHER;
1112         }
1113
1114         siz = sizeof( AttributeName );
1115         off = offsetof( AttributeName, an_name );
1116         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1117                 rs->sr_text = "postread control: decoding error";
1118                 return LDAP_PROTOCOL_ERROR;
1119         }
1120
1121         for( i=0; i<siz; i++ ) {
1122                 int             rc = LDAP_SUCCESS;
1123                 const char      *dummy = NULL;
1124
1125                 an[i].an_desc = NULL;
1126                 an[i].an_oc = NULL;
1127                 an[i].an_oc_exclude = 0;
1128                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1129                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1130                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1131                         return rc;
1132                 }
1133         }
1134
1135         op->o_postread = ctrl->ldctl_iscritical
1136                 ? SLAP_CRITICAL_CONTROL
1137                 : SLAP_NONCRITICAL_CONTROL;
1138
1139         op->o_postread_attrs = an;
1140
1141         rs->sr_err = LDAP_SUCCESS;
1142         return LDAP_SUCCESS;
1143 }
1144
1145 int parseValuesReturnFilter (
1146         Operation *op,
1147         SlapReply *rs,
1148         LDAPControl *ctrl )
1149 {
1150         BerElement      *ber;
1151         struct berval   fstr = BER_BVNULL;
1152         const char *err_msg = "";
1153
1154         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
1155                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1156                 return LDAP_PROTOCOL_ERROR;
1157         }
1158
1159         if ( ctrl->ldctl_value.bv_len == 0 ) {
1160                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1161                 return LDAP_PROTOCOL_ERROR;
1162         }
1163
1164         ber = ber_init( &(ctrl->ldctl_value) );
1165         if (ber == NULL) {
1166                 rs->sr_text = "internal error";
1167                 return LDAP_OTHER;
1168         }
1169
1170         rs->sr_err = get_vrFilter( op, ber, &(op->o_vrFilter), &rs->sr_text);
1171
1172         if( rs->sr_err != LDAP_SUCCESS ) {
1173                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1174                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1175                         send_ldap_disconnect( op, rs );
1176                         rs->sr_err = SLAPD_DISCONNECT;
1177                 } else {
1178                         send_ldap_result( op, rs );
1179                 }
1180                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1181         }
1182 #ifdef LDAP_DEBUG
1183         else {
1184                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1185         }
1186
1187 #ifdef NEW_LOGGING
1188         LDAP_LOG( OPERATION, ARGS,
1189                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
1190                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1191 #else
1192         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1193                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1194 #endif
1195         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1196 #endif
1197
1198         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1199                 ? SLAP_CRITICAL_CONTROL
1200                 : SLAP_NONCRITICAL_CONTROL;
1201
1202         rs->sr_err = LDAP_SUCCESS;
1203         return LDAP_SUCCESS;
1204 }
1205
1206 #ifdef LDAP_CONTROL_SUBENTRIES
1207 static int parseSubentries (
1208         Operation *op,
1209         SlapReply *rs,
1210         LDAPControl *ctrl )
1211 {
1212         if ( op->o_subentries != SLAP_NO_CONTROL ) {
1213                 rs->sr_text = "subentries control specified multiple times";
1214                 return LDAP_PROTOCOL_ERROR;
1215         }
1216
1217         /* FIXME: should use BER library */
1218         if( ( ctrl->ldctl_value.bv_len != 3 )
1219                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1220                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1221         {
1222                 rs->sr_text = "subentries control value encoding is bogus";
1223                 return LDAP_PROTOCOL_ERROR;
1224         }
1225
1226         op->o_subentries = ctrl->ldctl_iscritical
1227                 ? SLAP_CRITICAL_CONTROL
1228                 : SLAP_NONCRITICAL_CONTROL;
1229
1230         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
1231
1232         return LDAP_SUCCESS;
1233 }
1234 #endif
1235
1236 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1237 static int parsePermissiveModify (
1238         Operation *op,
1239         SlapReply *rs,
1240         LDAPControl *ctrl )
1241 {
1242         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
1243                 rs->sr_text = "permissiveModify control specified multiple times";
1244                 return LDAP_PROTOCOL_ERROR;
1245         }
1246
1247         if ( ctrl->ldctl_value.bv_len ) {
1248                 rs->sr_text = "permissiveModify control value not empty";
1249                 return LDAP_PROTOCOL_ERROR;
1250         }
1251
1252         op->o_permissive_modify = ctrl->ldctl_iscritical
1253                 ? SLAP_CRITICAL_CONTROL
1254                 : SLAP_NONCRITICAL_CONTROL;
1255
1256         return LDAP_SUCCESS;
1257 }
1258 #endif
1259
1260 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1261 static int parseDomainScope (
1262         Operation *op,
1263         SlapReply *rs,
1264         LDAPControl *ctrl )
1265 {
1266         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1267                 rs->sr_text = "domainScope control specified multiple times";
1268                 return LDAP_PROTOCOL_ERROR;
1269         }
1270
1271         if ( ctrl->ldctl_value.bv_len ) {
1272                 rs->sr_text = "domainScope control value not empty";
1273                 return LDAP_PROTOCOL_ERROR;
1274         }
1275
1276         op->o_domain_scope = ctrl->ldctl_iscritical
1277                 ? SLAP_CRITICAL_CONTROL
1278                 : SLAP_NONCRITICAL_CONTROL;
1279
1280         return LDAP_SUCCESS;
1281 }
1282 #endif
1283
1284 #ifdef LDAP_CONTROL_X_TREE_DELETE
1285 static int parseTreeDelete (
1286         Operation *op,
1287         SlapReply *rs,
1288         LDAPControl *ctrl )
1289 {
1290         if ( op->o_tree_delete != SLAP_NO_CONTROL ) {
1291                 rs->sr_text = "treeDelete control specified multiple times";
1292                 return LDAP_PROTOCOL_ERROR;
1293         }
1294
1295         if ( ctrl->ldctl_value.bv_len ) {
1296                 rs->sr_text = "treeDelete control value not empty";
1297                 return LDAP_PROTOCOL_ERROR;
1298         }
1299
1300         op->o_tree_delete = ctrl->ldctl_iscritical
1301                 ? SLAP_CRITICAL_CONTROL
1302                 : SLAP_NONCRITICAL_CONTROL;
1303
1304         return LDAP_SUCCESS;
1305 }
1306 #endif
1307
1308 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1309 static int parseSearchOptions (
1310         Operation *op,
1311         SlapReply *rs,
1312         LDAPControl *ctrl )
1313 {
1314         BerElement *ber;
1315         ber_int_t search_flags;
1316
1317         if ( ctrl->ldctl_value.bv_len == 0 ) {
1318                 rs->sr_text = "searchOptions control value not empty";
1319                 return LDAP_PROTOCOL_ERROR;
1320         }
1321
1322         ber = ber_init( &ctrl->ldctl_value );
1323         if( ber == NULL ) {
1324                 rs->sr_text = "internal error";
1325                 return LDAP_OTHER;
1326         }
1327
1328         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1329                 rs->sr_text = "searchOptions control decoding error";
1330                 return LDAP_PROTOCOL_ERROR;
1331         }
1332
1333         (void) ber_free( ber, 1 );
1334
1335         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1336                 if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1337                         rs->sr_text = "searchOptions control specified multiple times "
1338                                 "or with domainScope control";
1339                         return LDAP_PROTOCOL_ERROR;
1340                 }
1341
1342                 op->o_domain_scope = ctrl->ldctl_iscritical
1343                         ? SLAP_CRITICAL_CONTROL
1344                         : SLAP_NONCRITICAL_CONTROL;
1345         }
1346
1347         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1348                 /* Other search flags not recognised so far */
1349                 rs->sr_text = "searchOptions contained unrecongized flag";
1350                 return LDAP_UNWILLING_TO_PERFORM;
1351         }
1352
1353         return LDAP_SUCCESS;
1354 }
1355 #endif
1356
1357 static int parseLDAPsync (
1358         Operation *op,
1359         SlapReply *rs,
1360         LDAPControl *ctrl )
1361 {
1362         ber_tag_t tag;
1363         BerElement *ber;
1364         ber_int_t mode;
1365         ber_len_t len;
1366         struct slap_session_entry *se;
1367
1368         if ( op->o_sync != SLAP_NO_CONTROL ) {
1369                 rs->sr_text = "Sync control specified multiple times";
1370                 return LDAP_PROTOCOL_ERROR;
1371         }
1372
1373         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
1374                 rs->sr_text = "Sync control specified with pagedResults control";
1375                 return LDAP_PROTOCOL_ERROR;
1376         }
1377
1378
1379         if ( ctrl->ldctl_value.bv_len == 0 ) {
1380                 rs->sr_text = "Sync control value is empty (or absent)";
1381                 return LDAP_PROTOCOL_ERROR;
1382         }
1383
1384         /* Parse the control value
1385          *      syncRequestValue ::= SEQUENCE {
1386          *              mode   ENUMERATED {
1387          *                      -- 0 unused
1388          *                      refreshOnly             (1),
1389          *                      -- 2 reserved
1390          *                      refreshAndPersist       (3)
1391          *              },
1392          *              cookie  syncCookie OPTIONAL
1393          *      }
1394          */
1395
1396         ber = ber_init( &ctrl->ldctl_value );
1397         if( ber == NULL ) {
1398                 rs->sr_text = "internal error";
1399                 return LDAP_OTHER;
1400         }
1401
1402         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1403                 rs->sr_text = "Sync control : mode decoding error";
1404                 return LDAP_PROTOCOL_ERROR;
1405         }
1406
1407         switch( mode ) {
1408         case LDAP_SYNC_REFRESH_ONLY:
1409                 mode = SLAP_SYNC_REFRESH;
1410                 break;
1411         case LDAP_SYNC_REFRESH_AND_PERSIST:
1412                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1413                 break;
1414         default:
1415                 rs->sr_text = "Sync control : unknown update mode";
1416                 return LDAP_PROTOCOL_ERROR;
1417         }
1418
1419         tag = ber_peek_tag( ber, &len );
1420
1421         if ( tag == LDAP_TAG_SYNC_COOKIE ) {
1422                 struct berval tmp_bv;
1423                 if (( ber_scanf( ber, /*{*/ "o", &tmp_bv )) == LBER_ERROR ) {
1424                         rs->sr_text = "Sync control : cookie decoding error";
1425                         return LDAP_PROTOCOL_ERROR;
1426                 }
1427                 ber_bvarray_add( &op->o_sync_state.octet_str, &tmp_bv );
1428                 slap_parse_sync_cookie( &op->o_sync_state );
1429         }
1430         if ( tag == LDAP_TAG_RELOAD_HINT ) {
1431                 if (( ber_scanf( ber, /*{*/ "b", &op->o_sync_rhint )) == LBER_ERROR ) {
1432                         rs->sr_text = "Sync control : rhint decoding error";
1433                         return LDAP_PROTOCOL_ERROR;
1434                 }
1435         }
1436         if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1437                         rs->sr_text = "Sync control : decoding error";
1438                         return LDAP_PROTOCOL_ERROR;
1439         }
1440
1441         (void) ber_free( ber, 1 );
1442
1443         op->o_sync_mode = (char) mode;
1444
1445         op->o_sync = ctrl->ldctl_iscritical
1446                 ? SLAP_CRITICAL_CONTROL
1447                 : SLAP_NONCRITICAL_CONTROL;
1448
1449         return LDAP_SUCCESS;
1450 }