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                                 if ( rc ) {
 612                                         rs->sr_err = rc;
 613                                         goto return_results;
 614                                 }
 615
 616                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 617                                         /* kludge to disable backend_control() check */
 618                                         c->ldctl_iscritical = 0;
 619
 620                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 621                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 622                                 {
 623                                         /* kludge to disable backend_control() check */
 624                                         c->ldctl_iscritical = 0;
 625                                 }
 626
 627                         } else if( c->ldctl_iscritical ) {
 628                                 /* unavailable CRITICAL control */
 629                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 630                                 rs->sr_text = "critical extension is unavailable";
 631                                 goto return_results;
 632                         }
 633
 634                 } else if( c->ldctl_iscritical ) {
 635                         /* unrecognized CRITICAL control */
 636                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 637                         rs->sr_text = "critical extension is not recognized";
 638                         goto return_results;
 639                 }
 640 next_ctrl:;
 641         }
 642
 643 return_results:
 644 #ifdef NEW_LOGGING
 645         LDAP_LOG( OPERATION, RESULTS,
 646                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 647                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
 648 #else
 649         Debug( LDAP_DEBUG_TRACE,
 650                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 651                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 652 #endif
 653
 654         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 655                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 656                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 657                         send_ldap_disconnect( op, rs );
 658                         rs->sr_err = SLAPD_DISCONNECT;
 659                 } else {
 660                         send_ldap_result( op, rs );
 661                 }
 662         }
 663
 664         return rs->sr_err;
 665 }
 666
 667 static int parseModifyIncrement (
 668         Operation *op,
 669         SlapReply *rs,
 670         LDAPControl *ctrl )
 671 {
 672 #if 0
 673         if ( op->o_modifyIncrement != SLAP_NO_CONTROL ) {
 674                 rs->sr_text = "modifyIncrement control specified multiple times";
 675                 return LDAP_PROTOCOL_ERROR;
 676         }
 677 #endif
 678
 679         if ( ctrl->ldctl_value.bv_len ) {
 680                 rs->sr_text = "modifyIncrement control value not empty";
 681                 return LDAP_PROTOCOL_ERROR;
 682         }
 683
 684 #if 0
 685         op->o_modifyIncrement = ctrl->ldctl_iscritical
 686                 ? SLAP_CRITICAL_CONTROL
 687                 : SLAP_NONCRITICAL_CONTROL;
 688 #endif
 689
 690         return LDAP_SUCCESS;
 691 }
 692
 693 static int parseManageDSAit (
 694         Operation *op,
 695         SlapReply *rs,
 696         LDAPControl *ctrl )
 697 {
 698         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 699                 rs->sr_text = "manageDSAit control specified multiple times";
 700                 return LDAP_PROTOCOL_ERROR;
 701         }
 702
 703         if ( ctrl->ldctl_value.bv_len ) {
 704                 rs->sr_text = "manageDSAit control value not empty";
 705                 return LDAP_PROTOCOL_ERROR;
 706         }
 707
 708         op->o_managedsait = ctrl->ldctl_iscritical
 709                 ? SLAP_CRITICAL_CONTROL
 710                 : SLAP_NONCRITICAL_CONTROL;
 711
 712         return LDAP_SUCCESS;
 713 }
 714
 715 static int parseProxyAuthz (
 716         Operation *op,
 717         SlapReply *rs,
 718         LDAPControl *ctrl )
 719 {
 720         int             rc;
 721         struct berval   dn = BER_BVNULL;
 722
 723         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 724                 rs->sr_text = "proxy authorization control specified multiple times";
 725                 return LDAP_PROTOCOL_ERROR;
 726         }
 727
 728         op->o_proxy_authz = ctrl->ldctl_iscritical
 729                 ? SLAP_CRITICAL_CONTROL
 730                 : SLAP_NONCRITICAL_CONTROL;
 731
 732 #ifdef NEW_LOGGING
 733         LDAP_LOG( OPERATION, ARGS,
 734                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 735                 op->o_connid,
 736                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 737                 0 );
 738 #else
 739         Debug( LDAP_DEBUG_ARGS,
 740                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 741                 op->o_connid,
 742                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 743                 0 );
 744 #endif
 745
 746         if( ctrl->ldctl_value.bv_len == 0 ) {
 747 #ifdef NEW_LOGGING
 748                 LDAP_LOG( OPERATION, RESULTS,
 749                         "parseProxyAuthz: conn=%lu anonymous\n",
 750                         op->o_connid, 0, 0 );
 751 #else
 752                 Debug( LDAP_DEBUG_TRACE,
 753                         "parseProxyAuthz: conn=%lu anonymous\n",
 754                         op->o_connid, 0, 0 );
 755 #endif
 756
 757                 /* anonymous */
 758                 free( op->o_dn.bv_val );
 759                 op->o_dn.bv_len = 0;
 760                 op->o_dn.bv_val = ch_strdup( "" );
 761
 762                 free( op->o_ndn.bv_val );
 763                 op->o_ndn.bv_len = 0;
 764                 op->o_ndn.bv_val = ch_strdup( "" );
 765
 766                 return LDAP_SUCCESS;
 767         }
 768
 769         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 770                         NULL, &dn, SLAP_GETDN_AUTHZID );
 771
 772         /* FIXME: empty DN in proxyAuthz control should be legal... */
 773         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 774                 if ( dn.bv_val ) {
 775                         ch_free( dn.bv_val );
 776                 }
 777                 rs->sr_text = "authzId mapping failed";
 778                 return LDAP_PROXY_AUTHZ_FAILURE;
 779         }
 780
 781 #ifdef NEW_LOGGING
 782         LDAP_LOG( OPERATION, RESULTS,
 783                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 784                 op->o_connid,
 785                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 786 #else
 787         Debug( LDAP_DEBUG_TRACE,
 788                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 789                 op->o_connid,
 790                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 791 #endif
 792
 793         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 794
 795         if( rc ) {
 796                 ch_free( dn.bv_val );
 797                 rs->sr_text = "not authorized to assume identity";
 798                 return LDAP_PROXY_AUTHZ_FAILURE;
 799         }
 800
 801         ch_free( op->o_dn.bv_val );
 802         ch_free( op->o_ndn.bv_val );
 803
 804         op->o_dn.bv_val = NULL;
 805         op->o_ndn = dn;
 806
 807         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu PROXYAUTHZ dn=\"%s\"\n",
 808             op->o_connid, op->o_opid, dn.bv_val, 0, 0 );
 809
 810         /*
 811          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 812          * from now on op->o_dn is normalized
 813          */
 814         ber_dupbv( &op->o_dn, &dn );
 815
 816         return LDAP_SUCCESS;
 817 }
 818
 819 static int parseNoOp (
 820         Operation *op,
 821         SlapReply *rs,
 822         LDAPControl *ctrl )
 823 {
 824         if ( op->o_noop != SLAP_NO_CONTROL ) {
 825                 rs->sr_text = "noop control specified multiple times";
 826                 return LDAP_PROTOCOL_ERROR;
 827         }
 828
 829         if ( ctrl->ldctl_value.bv_len ) {
 830                 rs->sr_text = "noop control value not empty";
 831                 return LDAP_PROTOCOL_ERROR;
 832         }
 833
 834         op->o_noop = ctrl->ldctl_iscritical
 835                 ? SLAP_CRITICAL_CONTROL
 836                 : SLAP_NONCRITICAL_CONTROL;
 837
 838         return LDAP_SUCCESS;
 839 }
 840
 841 static int parsePagedResults (
 842         Operation *op,
 843         SlapReply *rs,
 844         LDAPControl *ctrl )
 845 {
 846         ber_tag_t tag;
 847         ber_int_t size;
 848         BerElement *ber;
 849         struct berval cookie = BER_BVNULL;
 850
 851         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 852                 rs->sr_text = "paged results control specified multiple times";
 853                 return LDAP_PROTOCOL_ERROR;
 854         }
 855
 856         if ( op->o_sync != SLAP_NO_CONTROL ) {
 857                 rs->sr_text = "paged results control specified with sync control";
 858                 return LDAP_PROTOCOL_ERROR;
 859         }
 860
 861         if ( ctrl->ldctl_value.bv_len == 0 ) {
 862                 rs->sr_text = "paged results control value is empty (or absent)";
 863                 return LDAP_PROTOCOL_ERROR;
 864         }
 865
 866         /* Parse the control value
 867          *      realSearchControlValue ::= SEQUENCE {
 868          *              size    INTEGER (0..maxInt),
 869          *                              -- requested page size from client
 870          *                              -- result set size estimate from server
 871          *              cookie  OCTET STRING
 872          * }
 873          */
 874         ber = ber_init( &ctrl->ldctl_value );
 875         if( ber == NULL ) {
 876                 rs->sr_text = "internal error";
 877                 return LDAP_OTHER;
 878         }
 879
 880         tag = ber_scanf( ber, "{im}", &size, &cookie );
 881         (void) ber_free( ber, 1 );
 882
 883         if( tag == LBER_ERROR ) {
 884                 rs->sr_text = "paged results control could not be decoded";
 885                 return LDAP_PROTOCOL_ERROR;
 886         }
 887
 888         if( size < 0 ) {
 889                 rs->sr_text = "paged results control size invalid";
 890                 return LDAP_PROTOCOL_ERROR;
 891         }
 892
 893         if( cookie.bv_len ) {
 894                 PagedResultsCookie reqcookie;
 895                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 896                         /* bad cookie */
 897                         rs->sr_text = "paged results cookie is invalid";
 898                         return LDAP_PROTOCOL_ERROR;
 899                 }
 900
 901                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 902
 903                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 904                         /* bad cookie */
 905                         rs->sr_text = "paged results cookie is invalid";
 906                         return LDAP_PROTOCOL_ERROR;
 907
 908                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 909                         rs->sr_text = "paged results cookie is invalid or old";
 910                         return LDAP_UNWILLING_TO_PERFORM;
 911                 }
 912
 913         } else {
 914                 /* Initial request.  Initialize state. */
 915                 op->o_pagedresults_state.ps_cookie = 0;
 916                 op->o_pagedresults_state.ps_count = 0;
 917         }
 918
 919         op->o_pagedresults_size = size;
 920
 921         op->o_pagedresults = ctrl->ldctl_iscritical
 922                 ? SLAP_CRITICAL_CONTROL
 923                 : SLAP_NONCRITICAL_CONTROL;
 924
 925         return LDAP_SUCCESS;
 926 }
 927
 928 static int parseAssert (
 929         Operation *op,
 930         SlapReply *rs,
 931         LDAPControl *ctrl )
 932 {
 933         BerElement      *ber;
 934         struct berval   fstr = BER_BVNULL;
 935         const char *err_msg = "";
 936
 937         if ( op->o_assert != SLAP_NO_CONTROL ) {
 938                 rs->sr_text = "assert control specified multiple times";
 939                 return LDAP_PROTOCOL_ERROR;
 940         }
 941
 942         if ( ctrl->ldctl_value.bv_len == 0 ) {
 943                 rs->sr_text = "assert control value is empty (or absent)";
 944                 return LDAP_PROTOCOL_ERROR;
 945         }
 946
 947         ber = ber_init( &(ctrl->ldctl_value) );
 948         if (ber == NULL) {
 949                 rs->sr_text = "assert control: internal error";
 950                 return LDAP_OTHER;
 951         }
 952
 953         rs->sr_err = get_filter( op, ber, &(op->o_assertion), &rs->sr_text);
 954
 955         if( rs->sr_err != LDAP_SUCCESS ) {
 956                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 957                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 958                         send_ldap_disconnect( op, rs );
 959                         rs->sr_err = SLAPD_DISCONNECT;
 960                 } else {
 961                         send_ldap_result( op, rs );
 962                 }
 963                 if( op->o_assertion != NULL ) {
 964                         filter_free_x( op, op->o_assertion );
 965                 }
 966                 return rs->sr_err;
 967         }
 968
 969 #ifdef LDAP_DEBUG
 970         filter2bv_x( op, op->o_assertion, &fstr );
 971
 972 #ifdef NEW_LOGGING
 973         LDAP_LOG( OPERATION, ARGS,
 974                 "parseAssert: conn %ld assert: %s\n",
 975                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 976 #else
 977         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 978                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 979 #endif
 980         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 981 #endif
 982
 983         op->o_assert = ctrl->ldctl_iscritical
 984                 ? SLAP_CRITICAL_CONTROL
 985                 : SLAP_NONCRITICAL_CONTROL;
 986
 987         rs->sr_err = LDAP_SUCCESS;
 988         return LDAP_SUCCESS;
 989 }
 990
 991 static int parsePreRead (
 992         Operation *op,
 993         SlapReply *rs,
 994         LDAPControl *ctrl )
 995 {
 996         ber_len_t siz, off, i;
 997         AttributeName *an = NULL;
 998         BerElement      *ber;
 999
1000         if ( op->o_preread != SLAP_NO_CONTROL ) {
1001                 rs->sr_text = "preread control specified multiple times";
1002                 return LDAP_PROTOCOL_ERROR;
1003         }
1004
1005         if ( ctrl->ldctl_value.bv_len == 0 ) {
1006                 rs->sr_text = "preread control value is empty (or absent)";
1007                 return LDAP_PROTOCOL_ERROR;
1008         }
1009
1010         ber = ber_init( &(ctrl->ldctl_value) );
1011         if (ber == NULL) {
1012                 rs->sr_text = "preread control: internal error";
1013                 return LDAP_OTHER;
1014         }
1015
1016         siz = sizeof( AttributeName );
1017         off = offsetof( AttributeName, an_name );
1018         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1019                 rs->sr_text = "preread control: decoding error";
1020                 return LDAP_PROTOCOL_ERROR;
1021         }
1022
1023         for( i=0; i<siz; i++ ) {
1024                 int             rc = LDAP_SUCCESS;
1025                 const char      *dummy = NULL;
1026
1027                 an[i].an_desc = NULL;
1028                 an[i].an_oc = NULL;
1029                 an[i].an_oc_exclude = 0;
1030                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1031                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1032                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1033                         return rc;
1034                 }
1035         }
1036
1037         op->o_preread = ctrl->ldctl_iscritical
1038                 ? SLAP_CRITICAL_CONTROL
1039                 : SLAP_NONCRITICAL_CONTROL;
1040
1041         op->o_preread_attrs = an;
1042
1043         rs->sr_err = LDAP_SUCCESS;
1044         return LDAP_SUCCESS;
1045 }
1046
1047 static int parsePostRead (
1048         Operation *op,
1049         SlapReply *rs,
1050         LDAPControl *ctrl )
1051 {
1052         ber_len_t siz, off, i;
1053         AttributeName *an = NULL;
1054         BerElement      *ber;
1055
1056         if ( op->o_postread != SLAP_NO_CONTROL ) {
1057                 rs->sr_text = "postread control specified multiple times";
1058                 return LDAP_PROTOCOL_ERROR;
1059         }
1060
1061         if ( ctrl->ldctl_value.bv_len == 0 ) {
1062                 rs->sr_text = "postread control value is empty (or absent)";
1063                 return LDAP_PROTOCOL_ERROR;
1064         }
1065
1066         ber = ber_init( &(ctrl->ldctl_value) );
1067         if (ber == NULL) {
1068                 rs->sr_text = "postread control: internal error";
1069                 return LDAP_OTHER;
1070         }
1071
1072         siz = sizeof( AttributeName );
1073         off = offsetof( AttributeName, an_name );
1074         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1075                 rs->sr_text = "postread control: decoding error";
1076                 return LDAP_PROTOCOL_ERROR;
1077         }
1078
1079         for( i=0; i<siz; i++ ) {
1080                 int             rc = LDAP_SUCCESS;
1081                 const char      *dummy = NULL;
1082
1083                 an[i].an_desc = NULL;
1084                 an[i].an_oc = NULL;
1085                 an[i].an_oc_exclude = 0;
1086                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1087                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1088                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1089                         return rc;
1090                 }
1091         }
1092
1093         op->o_postread = ctrl->ldctl_iscritical
1094                 ? SLAP_CRITICAL_CONTROL
1095                 : SLAP_NONCRITICAL_CONTROL;
1096
1097         op->o_postread_attrs = an;
1098
1099         rs->sr_err = LDAP_SUCCESS;
1100         return LDAP_SUCCESS;
1101 }
1102
1103 int parseValuesReturnFilter (
1104         Operation *op,
1105         SlapReply *rs,
1106         LDAPControl *ctrl )
1107 {
1108         BerElement      *ber;
1109         struct berval   fstr = BER_BVNULL;
1110         const char *err_msg = "";
1111
1112         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
1113                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1114                 return LDAP_PROTOCOL_ERROR;
1115         }
1116
1117         if ( ctrl->ldctl_value.bv_len == 0 ) {
1118                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1119                 return LDAP_PROTOCOL_ERROR;
1120         }
1121
1122         ber = ber_init( &(ctrl->ldctl_value) );
1123         if (ber == NULL) {
1124                 rs->sr_text = "internal error";
1125                 return LDAP_OTHER;
1126         }
1127
1128         rs->sr_err = get_vrFilter( op, ber, &(op->o_vrFilter), &rs->sr_text);
1129
1130         if( rs->sr_err != LDAP_SUCCESS ) {
1131                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1132                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1133                         send_ldap_disconnect( op, rs );
1134                         rs->sr_err = SLAPD_DISCONNECT;
1135                 } else {
1136                         send_ldap_result( op, rs );
1137                 }
1138                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1139         }
1140 #ifdef LDAP_DEBUG
1141         else {
1142                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1143         }
1144
1145 #ifdef NEW_LOGGING
1146         LDAP_LOG( OPERATION, ARGS,
1147                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
1148                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1149 #else
1150         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1151                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1152 #endif
1153         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1154 #endif
1155
1156         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1157                 ? SLAP_CRITICAL_CONTROL
1158                 : SLAP_NONCRITICAL_CONTROL;
1159
1160         rs->sr_err = LDAP_SUCCESS;
1161         return LDAP_SUCCESS;
1162 }
1163
1164 #ifdef LDAP_CONTROL_SUBENTRIES
1165 static int parseSubentries (
1166         Operation *op,
1167         SlapReply *rs,
1168         LDAPControl *ctrl )
1169 {
1170         if ( op->o_subentries != SLAP_NO_CONTROL ) {
1171                 rs->sr_text = "subentries control specified multiple times";
1172                 return LDAP_PROTOCOL_ERROR;
1173         }
1174
1175         /* FIXME: should use BER library */
1176         if( ( ctrl->ldctl_value.bv_len != 3 )
1177                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1178                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1179         {
1180                 rs->sr_text = "subentries control value encoding is bogus";
1181                 return LDAP_PROTOCOL_ERROR;
1182         }
1183
1184         op->o_subentries = ctrl->ldctl_iscritical
1185                 ? SLAP_CRITICAL_CONTROL
1186                 : SLAP_NONCRITICAL_CONTROL;
1187
1188         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
1189
1190         return LDAP_SUCCESS;
1191 }
1192 #endif
1193
1194 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1195 static int parsePermissiveModify (
1196         Operation *op,
1197         SlapReply *rs,
1198         LDAPControl *ctrl )
1199 {
1200         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
1201                 rs->sr_text = "permissiveModify control specified multiple times";
1202                 return LDAP_PROTOCOL_ERROR;
1203         }
1204
1205         if ( ctrl->ldctl_value.bv_len ) {
1206                 rs->sr_text = "permissiveModify control value not empty";
1207                 return LDAP_PROTOCOL_ERROR;
1208         }
1209
1210         op->o_permissive_modify = ctrl->ldctl_iscritical
1211                 ? SLAP_CRITICAL_CONTROL
1212                 : SLAP_NONCRITICAL_CONTROL;
1213
1214         return LDAP_SUCCESS;
1215 }
1216 #endif
1217
1218 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1219 static int parseDomainScope (
1220         Operation *op,
1221         SlapReply *rs,
1222         LDAPControl *ctrl )
1223 {
1224         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1225                 rs->sr_text = "domainScope control specified multiple times";
1226                 return LDAP_PROTOCOL_ERROR;
1227         }
1228
1229         if ( ctrl->ldctl_value.bv_len ) {
1230                 rs->sr_text = "domainScope control value not empty";
1231                 return LDAP_PROTOCOL_ERROR;
1232         }
1233
1234         op->o_domain_scope = ctrl->ldctl_iscritical
1235                 ? SLAP_CRITICAL_CONTROL
1236                 : SLAP_NONCRITICAL_CONTROL;
1237
1238         return LDAP_SUCCESS;
1239 }
1240 #endif
1241
1242 #ifdef LDAP_CONTROL_X_TREE_DELETE
1243 static int parseTreeDelete (
1244         Operation *op,
1245         SlapReply *rs,
1246         LDAPControl *ctrl )
1247 {
1248         if ( op->o_tree_delete != SLAP_NO_CONTROL ) {
1249                 rs->sr_text = "treeDelete control specified multiple times";
1250                 return LDAP_PROTOCOL_ERROR;
1251         }
1252
1253         if ( ctrl->ldctl_value.bv_len ) {
1254                 rs->sr_text = "treeDelete control value not empty";
1255                 return LDAP_PROTOCOL_ERROR;
1256         }
1257
1258         op->o_tree_delete = ctrl->ldctl_iscritical
1259                 ? SLAP_CRITICAL_CONTROL
1260                 : SLAP_NONCRITICAL_CONTROL;
1261
1262         return LDAP_SUCCESS;
1263 }
1264 #endif
1265
1266 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1267 static int parseSearchOptions (
1268         Operation *op,
1269         SlapReply *rs,
1270         LDAPControl *ctrl )
1271 {
1272         BerElement *ber;
1273         ber_int_t search_flags;
1274
1275         if ( ctrl->ldctl_value.bv_len == 0 ) {
1276                 rs->sr_text = "searchOptions control value not empty";
1277                 return LDAP_PROTOCOL_ERROR;
1278         }
1279
1280         ber = ber_init( &ctrl->ldctl_value );
1281         if( ber == NULL ) {
1282                 rs->sr_text = "internal error";
1283                 return LDAP_OTHER;
1284         }
1285
1286         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1287                 rs->sr_text = "searchOptions control decoding error";
1288                 return LDAP_PROTOCOL_ERROR;
1289         }
1290
1291         (void) ber_free( ber, 1 );
1292
1293         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1294                 if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1295                         rs->sr_text = "searchOptions control specified multiple times "
1296                                 "or with domainScope control";
1297                         return LDAP_PROTOCOL_ERROR;
1298                 }
1299
1300                 op->o_domain_scope = ctrl->ldctl_iscritical
1301                         ? SLAP_CRITICAL_CONTROL
1302                         : SLAP_NONCRITICAL_CONTROL;
1303         }
1304
1305         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1306                 /* Other search flags not recognised so far */
1307                 rs->sr_text = "searchOptions contained unrecongized flag";
1308                 return LDAP_UNWILLING_TO_PERFORM;
1309         }
1310
1311         return LDAP_SUCCESS;
1312 }
1313 #endif
1314
1315 static int parseLDAPsync (
1316         Operation *op,
1317         SlapReply *rs,
1318         LDAPControl *ctrl )
1319 {
1320         ber_tag_t tag;
1321         BerElement *ber;
1322         ber_int_t mode;
1323         ber_len_t len;
1324         struct slap_session_entry *se;
1325
1326         if ( op->o_sync != SLAP_NO_CONTROL ) {
1327                 rs->sr_text = "Sync control specified multiple times";
1328                 return LDAP_PROTOCOL_ERROR;
1329         }
1330
1331         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
1332                 rs->sr_text = "Sync control specified with pagedResults control";
1333                 return LDAP_PROTOCOL_ERROR;
1334         }
1335
1336
1337         if ( ctrl->ldctl_value.bv_len == 0 ) {
1338                 rs->sr_text = "Sync control value is empty (or absent)";
1339                 return LDAP_PROTOCOL_ERROR;
1340         }
1341
1342         /* Parse the control value
1343          *      syncRequestValue ::= SEQUENCE {
1344          *              mode   ENUMERATED {
1345          *                      -- 0 unused
1346          *                      refreshOnly             (1),
1347          *                      -- 2 reserved
1348          *                      refreshAndPersist       (3)
1349          *              },
1350          *              cookie  syncCookie OPTIONAL
1351          *      }
1352          */
1353
1354         ber = ber_init( &ctrl->ldctl_value );
1355         if( ber == NULL ) {
1356                 rs->sr_text = "internal error";
1357                 return LDAP_OTHER;
1358         }
1359
1360         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1361                 rs->sr_text = "Sync control : mode decoding error";
1362                 return LDAP_PROTOCOL_ERROR;
1363         }
1364
1365         switch( mode ) {
1366         case LDAP_SYNC_REFRESH_ONLY:
1367                 mode = SLAP_SYNC_REFRESH;
1368                 break;
1369         case LDAP_SYNC_REFRESH_AND_PERSIST:
1370                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1371                 break;
1372         default:
1373                 rs->sr_text = "Sync control : unknown update mode";
1374                 return LDAP_PROTOCOL_ERROR;
1375         }
1376
1377         tag = ber_peek_tag( ber, &len );
1378
1379         if ( tag == LDAP_TAG_SYNC_COOKIE ) {
1380                 struct berval tmp_bv;
1381                 if (( ber_scanf( ber, /*{*/ "o", &tmp_bv )) == LBER_ERROR ) {
1382                         rs->sr_text = "Sync control : cookie decoding error";
1383                         return LDAP_PROTOCOL_ERROR;
1384                 }
1385                 ber_bvarray_add( &op->o_sync_state.octet_str, &tmp_bv );
1386                 slap_parse_sync_cookie( &op->o_sync_state );
1387         }
1388         if ( tag == LDAP_TAG_RELOAD_HINT ) {
1389                 if (( ber_scanf( ber, /*{*/ "b", &op->o_sync_rhint )) == LBER_ERROR ) {
1390                         rs->sr_text = "Sync control : rhint decoding error";
1391                         return LDAP_PROTOCOL_ERROR;
1392                 }
1393         }
1394         if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1395                         rs->sr_text = "Sync control : decoding error";
1396                         return LDAP_PROTOCOL_ERROR;
1397         }
1398
1399         (void) ber_free( ber, 1 );
1400
1401         op->o_sync_mode = (char) mode;
1402
1403         op->o_sync = ctrl->ldctl_iscritical
1404                 ? SLAP_CRITICAL_CONTROL
1405                 : SLAP_NONCRITICAL_CONTROL;
1406
1407         return LDAP_SUCCESS;
1408 }