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
 602                                 if( !sc->sc_parse ) {
 603                                         rs->sr_err = LDAP_OTHER;
 604                                         rs->sr_text = "not yet implemented";
 605                                         goto return_results;
 606                                 }
 607
 608                                 rs->sr_err = sc->sc_parse( op, rs, c );
 609                                 assert( rs->sr_err != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
 610                                 if( rs->sr_err != LDAP_SUCCESS ) goto return_results;
 611
 612                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 613                                         /* kludge to disable backend_control() check */
 614                                         c->ldctl_iscritical = 0;
 615
 616                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 617                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 618                                 {
 619                                         /* kludge to disable backend_control() check */
 620                                         c->ldctl_iscritical = 0;
 621                                 }
 622
 623                         } else if( c->ldctl_iscritical ) {
 624                                 /* unavailable CRITICAL control */
 625                                 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 626                                 rs->sr_text = "critical extension is unavailable";
 627                                 goto return_results;
 628                         }
 629
 630                 } else if( c->ldctl_iscritical ) {
 631                         /* unrecognized CRITICAL control */
 632                         rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 633                         rs->sr_text = "critical extension is not recognized";
 634                         goto return_results;
 635                 }
 636         }
 637
 638 return_results:
 639 #ifdef NEW_LOGGING
 640         LDAP_LOG( OPERATION, RESULTS,
 641                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 642                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
 643 #else
 644         Debug( LDAP_DEBUG_TRACE,
 645                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 646                 nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
 647 #endif
 648
 649         if( sendres && rs->sr_err != LDAP_SUCCESS ) {
 650                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 651                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 652                         send_ldap_disconnect( op, rs );
 653                         rs->sr_err = SLAPD_DISCONNECT;
 654                 } else {
 655                         send_ldap_result( op, rs );
 656                 }
 657         }
 658
 659         return rs->sr_err;
 660 }
 661
 662 static int parseModifyIncrement (
 663         Operation *op,
 664         SlapReply *rs,
 665         LDAPControl *ctrl )
 666 {
 667 #if 0
 668         if ( op->o_modifyIncrement != SLAP_NO_CONTROL ) {
 669                 rs->sr_text = "modifyIncrement control specified multiple times";
 670                 return LDAP_PROTOCOL_ERROR;
 671         }
 672 #endif
 673
 674         if ( ctrl->ldctl_value.bv_len ) {
 675                 rs->sr_text = "modifyIncrement control value not empty";
 676                 return LDAP_PROTOCOL_ERROR;
 677         }
 678
 679 #if 0
 680         op->o_modifyIncrement = ctrl->ldctl_iscritical
 681                 ? SLAP_CRITICAL_CONTROL
 682                 : SLAP_NONCRITICAL_CONTROL;
 683 #endif
 684
 685         return LDAP_SUCCESS;
 686 }
 687
 688 static int parseManageDSAit (
 689         Operation *op,
 690         SlapReply *rs,
 691         LDAPControl *ctrl )
 692 {
 693         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 694                 rs->sr_text = "manageDSAit control specified multiple times";
 695                 return LDAP_PROTOCOL_ERROR;
 696         }
 697
 698         if ( ctrl->ldctl_value.bv_len ) {
 699                 rs->sr_text = "manageDSAit control value not empty";
 700                 return LDAP_PROTOCOL_ERROR;
 701         }
 702
 703         op->o_managedsait = ctrl->ldctl_iscritical
 704                 ? SLAP_CRITICAL_CONTROL
 705                 : SLAP_NONCRITICAL_CONTROL;
 706
 707         return LDAP_SUCCESS;
 708 }
 709
 710 static int parseProxyAuthz (
 711         Operation *op,
 712         SlapReply *rs,
 713         LDAPControl *ctrl )
 714 {
 715         int             rc;
 716         struct berval   dn = BER_BVNULL;
 717
 718         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 719                 rs->sr_text = "proxy authorization control specified multiple times";
 720                 return LDAP_PROTOCOL_ERROR;
 721         }
 722
 723         op->o_proxy_authz = ctrl->ldctl_iscritical
 724                 ? SLAP_CRITICAL_CONTROL
 725                 : SLAP_NONCRITICAL_CONTROL;
 726
 727 #ifdef NEW_LOGGING
 728         LDAP_LOG( OPERATION, ARGS,
 729                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 730                 op->o_connid,
 731                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 732                 0 );
 733 #else
 734         Debug( LDAP_DEBUG_ARGS,
 735                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 736                 op->o_connid,
 737                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 738                 0 );
 739 #endif
 740
 741         if( ctrl->ldctl_value.bv_len == 0 ) {
 742 #ifdef NEW_LOGGING
 743                 LDAP_LOG( OPERATION, RESULTS,
 744                         "parseProxyAuthz: conn=%lu anonymous\n",
 745                         op->o_connid, 0, 0 );
 746 #else
 747                 Debug( LDAP_DEBUG_TRACE,
 748                         "parseProxyAuthz: conn=%lu anonymous\n",
 749                         op->o_connid, 0, 0 );
 750 #endif
 751
 752                 /* anonymous */
 753                 free( op->o_dn.bv_val );
 754                 op->o_dn.bv_len = 0;
 755                 op->o_dn.bv_val = ch_strdup( "" );
 756
 757                 free( op->o_ndn.bv_val );
 758                 op->o_ndn.bv_len = 0;
 759                 op->o_ndn.bv_val = ch_strdup( "" );
 760
 761                 return LDAP_SUCCESS;
 762         }
 763
 764         rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
 765                         NULL, &dn, SLAP_GETDN_AUTHZID );
 766
 767         /* FIXME: empty DN in proxyAuthz control should be legal... */
 768         if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
 769                 if ( dn.bv_val ) {
 770                         ch_free( dn.bv_val );
 771                 }
 772                 rs->sr_text = "authzId mapping failed";
 773                 return LDAP_PROXY_AUTHZ_FAILURE;
 774
 775         }
 776
 777 #ifdef NEW_LOGGING
 778         LDAP_LOG( OPERATION, RESULTS,
 779                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 780                 op->o_connid,
 781                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 782 #else
 783         Debug( LDAP_DEBUG_TRACE,
 784                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 785                 op->o_connid,
 786                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 787 #endif
 788
 789         rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
 790
 791         if( rc ) {
 792                 ch_free( dn.bv_val );
 793                 rs->sr_text = "not authorized to assume identity";
 794                 return LDAP_PROXY_AUTHZ_FAILURE;
 795         }
 796
 797         ch_free( op->o_dn.bv_val );
 798         ch_free( op->o_ndn.bv_val );
 799
 800         op->o_dn.bv_val = NULL;
 801         op->o_ndn = dn;
 802
 803         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu PROXYAUTHZ dn=\"%s\"\n",
 804             op->o_connid, op->o_opid, dn.bv_val, 0, 0 );
 805
 806         /*
 807          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 808          * from now on op->o_dn is normalized
 809          */
 810         ber_dupbv( &op->o_dn, &dn );
 811
 812         return LDAP_SUCCESS;
 813 }
 814
 815 static int parseNoOp (
 816         Operation *op,
 817         SlapReply *rs,
 818         LDAPControl *ctrl )
 819 {
 820         if ( op->o_noop != SLAP_NO_CONTROL ) {
 821                 rs->sr_text = "noop control specified multiple times";
 822                 return LDAP_PROTOCOL_ERROR;
 823         }
 824
 825         if ( ctrl->ldctl_value.bv_len ) {
 826                 rs->sr_text = "noop control value not empty";
 827                 return LDAP_PROTOCOL_ERROR;
 828         }
 829
 830         op->o_noop = ctrl->ldctl_iscritical
 831                 ? SLAP_CRITICAL_CONTROL
 832                 : SLAP_NONCRITICAL_CONTROL;
 833
 834         return LDAP_SUCCESS;
 835 }
 836
 837 static int parsePagedResults (
 838         Operation *op,
 839         SlapReply *rs,
 840         LDAPControl *ctrl )
 841 {
 842         ber_tag_t tag;
 843         ber_int_t size;
 844         BerElement *ber;
 845         struct berval cookie = BER_BVNULL;
 846
 847         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 848                 rs->sr_text = "paged results control specified multiple times";
 849                 return LDAP_PROTOCOL_ERROR;
 850         }
 851
 852         if ( op->o_sync != SLAP_NO_CONTROL ) {
 853                 rs->sr_text = "paged results control specified with sync control";
 854                 return LDAP_PROTOCOL_ERROR;
 855         }
 856
 857         if ( ctrl->ldctl_value.bv_len == 0 ) {
 858                 rs->sr_text = "paged results control value is empty (or absent)";
 859                 return LDAP_PROTOCOL_ERROR;
 860         }
 861
 862         /* Parse the control value
 863          *      realSearchControlValue ::= SEQUENCE {
 864          *              size    INTEGER (0..maxInt),
 865          *                              -- requested page size from client
 866          *                              -- result set size estimate from server
 867          *              cookie  OCTET STRING
 868          * }
 869          */
 870         ber = ber_init( &ctrl->ldctl_value );
 871         if( ber == NULL ) {
 872                 rs->sr_text = "internal error";
 873                 return LDAP_OTHER;
 874         }
 875
 876         tag = ber_scanf( ber, "{im}", &size, &cookie );
 877         (void) ber_free( ber, 1 );
 878
 879         if( tag == LBER_ERROR ) {
 880                 rs->sr_text = "paged results control could not be decoded";
 881                 return LDAP_PROTOCOL_ERROR;
 882         }
 883
 884         if( size < 0 ) {
 885                 rs->sr_text = "paged results control size invalid";
 886                 return LDAP_PROTOCOL_ERROR;
 887         }
 888
 889         if( cookie.bv_len ) {
 890                 PagedResultsCookie reqcookie;
 891                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 892                         /* bad cookie */
 893                         rs->sr_text = "paged results cookie is invalid";
 894                         return LDAP_PROTOCOL_ERROR;
 895                 }
 896
 897                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 898
 899                 if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 900                         /* bad cookie */
 901                         rs->sr_text = "paged results cookie is invalid";
 902                         return LDAP_PROTOCOL_ERROR;
 903
 904                 } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 905                         rs->sr_text = "paged results cookie is invalid or old";
 906                         return LDAP_UNWILLING_TO_PERFORM;
 907                 }
 908
 909         } else {
 910                 /* Initial request.  Initialize state. */
 911                 op->o_pagedresults_state.ps_cookie = 0;
 912                 op->o_pagedresults_state.ps_count = 0;
 913         }
 914
 915         op->o_pagedresults_size = size;
 916
 917         op->o_pagedresults = ctrl->ldctl_iscritical
 918                 ? SLAP_CRITICAL_CONTROL
 919                 : SLAP_NONCRITICAL_CONTROL;
 920
 921         return LDAP_SUCCESS;
 922 }
 923
 924 static int parseAssert (
 925         Operation *op,
 926         SlapReply *rs,
 927         LDAPControl *ctrl )
 928 {
 929         BerElement      *ber;
 930         struct berval   fstr = BER_BVNULL;
 931         const char *err_msg = "";
 932
 933         if ( op->o_assert != SLAP_NO_CONTROL ) {
 934                 rs->sr_text = "assert control specified multiple times";
 935                 return LDAP_PROTOCOL_ERROR;
 936         }
 937
 938         if ( ctrl->ldctl_value.bv_len == 0 ) {
 939                 rs->sr_text = "assert control value is empty (or absent)";
 940                 return LDAP_PROTOCOL_ERROR;
 941         }
 942
 943         ber = ber_init( &(ctrl->ldctl_value) );
 944         if (ber == NULL) {
 945                 rs->sr_text = "assert control: internal error";
 946                 return LDAP_OTHER;
 947         }
 948
 949         rs->sr_err = get_filter( op, ber, &(op->o_assertion), &rs->sr_text);
 950
 951         if( rs->sr_err != LDAP_SUCCESS ) {
 952                 if( rs->sr_err == SLAPD_DISCONNECT ) {
 953                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 954                         send_ldap_disconnect( op, rs );
 955                         rs->sr_err = SLAPD_DISCONNECT;
 956                 } else {
 957                         send_ldap_result( op, rs );
 958                 }
 959                 if( op->o_assertion != NULL ) {
 960                         filter_free_x( op, op->o_assertion );
 961                 }
 962                 return rs->sr_err;
 963         }
 964
 965 #ifdef LDAP_DEBUG
 966         filter2bv_x( op, op->o_assertion, &fstr );
 967
 968 #ifdef NEW_LOGGING
 969         LDAP_LOG( OPERATION, ARGS,
 970                 "parseAssert: conn %ld assert: %s\n",
 971                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 972 #else
 973         Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
 974                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 975 #endif
 976         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 977 #endif
 978
 979         op->o_assert = ctrl->ldctl_iscritical
 980                 ? SLAP_CRITICAL_CONTROL
 981                 : SLAP_NONCRITICAL_CONTROL;
 982
 983         rs->sr_err = LDAP_SUCCESS;
 984         return LDAP_SUCCESS;
 985 }
 986
 987 static int parsePreRead (
 988         Operation *op,
 989         SlapReply *rs,
 990         LDAPControl *ctrl )
 991 {
 992         ber_len_t siz, off, i;
 993         AttributeName *an = NULL;
 994         BerElement      *ber;
 995
 996         if ( op->o_preread != SLAP_NO_CONTROL ) {
 997                 rs->sr_text = "preread control specified multiple times";
 998                 return LDAP_PROTOCOL_ERROR;
 999         }
1000
1001         if ( ctrl->ldctl_value.bv_len == 0 ) {
1002                 rs->sr_text = "preread control value is empty (or absent)";
1003                 return LDAP_PROTOCOL_ERROR;
1004         }
1005
1006         ber = ber_init( &(ctrl->ldctl_value) );
1007         if (ber == NULL) {
1008                 rs->sr_text = "preread control: internal error";
1009                 return LDAP_OTHER;
1010         }
1011
1012         siz = sizeof( AttributeName );
1013         off = offsetof( AttributeName, an_name );
1014         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1015                 rs->sr_text = "preread control: decoding error";
1016                 return LDAP_PROTOCOL_ERROR;
1017         }
1018
1019         for( i=0; i<siz; i++ ) {
1020                 int             rc = LDAP_SUCCESS;
1021                 const char      *dummy = NULL;
1022
1023                 an[i].an_desc = NULL;
1024                 an[i].an_oc = NULL;
1025                 an[i].an_oc_exclude = 0;
1026                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1027                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1028                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1029                         return rc;
1030                 }
1031         }
1032
1033         op->o_preread = ctrl->ldctl_iscritical
1034                 ? SLAP_CRITICAL_CONTROL
1035                 : SLAP_NONCRITICAL_CONTROL;
1036
1037         op->o_preread_attrs = an;
1038
1039         rs->sr_err = LDAP_SUCCESS;
1040         return LDAP_SUCCESS;
1041 }
1042
1043 static int parsePostRead (
1044         Operation *op,
1045         SlapReply *rs,
1046         LDAPControl *ctrl )
1047 {
1048         ber_len_t siz, off, i;
1049         AttributeName *an = NULL;
1050         BerElement      *ber;
1051
1052         if ( op->o_postread != SLAP_NO_CONTROL ) {
1053                 rs->sr_text = "postread control specified multiple times";
1054                 return LDAP_PROTOCOL_ERROR;
1055         }
1056
1057         if ( ctrl->ldctl_value.bv_len == 0 ) {
1058                 rs->sr_text = "postread control value is empty (or absent)";
1059                 return LDAP_PROTOCOL_ERROR;
1060         }
1061
1062         ber = ber_init( &(ctrl->ldctl_value) );
1063         if (ber == NULL) {
1064                 rs->sr_text = "postread control: internal error";
1065                 return LDAP_OTHER;
1066         }
1067
1068         siz = sizeof( AttributeName );
1069         off = offsetof( AttributeName, an_name );
1070         if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
1071                 rs->sr_text = "postread control: decoding error";
1072                 return LDAP_PROTOCOL_ERROR;
1073         }
1074
1075         for( i=0; i<siz; i++ ) {
1076                 int             rc = LDAP_SUCCESS;
1077                 const char      *dummy = NULL;
1078
1079                 an[i].an_desc = NULL;
1080                 an[i].an_oc = NULL;
1081                 an[i].an_oc_exclude = 0;
1082                 rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
1083                 if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
1084                         rs->sr_text = dummy ? dummy : "postread control: unknown attributeType";
1085                         return rc;
1086                 }
1087         }
1088
1089         op->o_postread = ctrl->ldctl_iscritical
1090                 ? SLAP_CRITICAL_CONTROL
1091                 : SLAP_NONCRITICAL_CONTROL;
1092
1093         op->o_postread_attrs = an;
1094
1095         rs->sr_err = LDAP_SUCCESS;
1096         return LDAP_SUCCESS;
1097 }
1098
1099 int parseValuesReturnFilter (
1100         Operation *op,
1101         SlapReply *rs,
1102         LDAPControl *ctrl )
1103 {
1104         BerElement      *ber;
1105         struct berval   fstr = BER_BVNULL;
1106         const char *err_msg = "";
1107
1108         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
1109                 rs->sr_text = "valuesReturnFilter control specified multiple times";
1110                 return LDAP_PROTOCOL_ERROR;
1111         }
1112
1113         if ( ctrl->ldctl_value.bv_len == 0 ) {
1114                 rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
1115                 return LDAP_PROTOCOL_ERROR;
1116         }
1117
1118         ber = ber_init( &(ctrl->ldctl_value) );
1119         if (ber == NULL) {
1120                 rs->sr_text = "internal error";
1121                 return LDAP_OTHER;
1122         }
1123
1124         rs->sr_err = get_vrFilter( op, ber, &(op->o_vrFilter), &rs->sr_text);
1125
1126         if( rs->sr_err != LDAP_SUCCESS ) {
1127                 if( rs->sr_err == SLAPD_DISCONNECT ) {
1128                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1129                         send_ldap_disconnect( op, rs );
1130                         rs->sr_err = SLAPD_DISCONNECT;
1131                 } else {
1132                         send_ldap_result( op, rs );
1133                 }
1134                 if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter );
1135         }
1136 #ifdef LDAP_DEBUG
1137         else {
1138                 vrFilter2bv( op, op->o_vrFilter, &fstr );
1139         }
1140
1141 #ifdef NEW_LOGGING
1142         LDAP_LOG( OPERATION, ARGS,
1143                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
1144                 op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
1145 #else
1146         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
1147                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
1148 #endif
1149         op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1150 #endif
1151
1152         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
1153                 ? SLAP_CRITICAL_CONTROL
1154                 : SLAP_NONCRITICAL_CONTROL;
1155
1156         rs->sr_err = LDAP_SUCCESS;
1157         return LDAP_SUCCESS;
1158 }
1159
1160 #ifdef LDAP_CONTROL_SUBENTRIES
1161 static int parseSubentries (
1162         Operation *op,
1163         SlapReply *rs,
1164         LDAPControl *ctrl )
1165 {
1166         if ( op->o_subentries != SLAP_NO_CONTROL ) {
1167                 rs->sr_text = "subentries control specified multiple times";
1168                 return LDAP_PROTOCOL_ERROR;
1169         }
1170
1171         /* FIXME: should use BER library */
1172         if( ( ctrl->ldctl_value.bv_len != 3 )
1173                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
1174                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
1175         {
1176                 rs->sr_text = "subentries control value encoding is bogus";
1177                 return LDAP_PROTOCOL_ERROR;
1178         }
1179
1180         op->o_subentries = ctrl->ldctl_iscritical
1181                 ? SLAP_CRITICAL_CONTROL
1182                 : SLAP_NONCRITICAL_CONTROL;
1183
1184         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
1185
1186         return LDAP_SUCCESS;
1187 }
1188 #endif
1189
1190 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
1191 static int parsePermissiveModify (
1192         Operation *op,
1193         SlapReply *rs,
1194         LDAPControl *ctrl )
1195 {
1196         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
1197                 rs->sr_text = "permissiveModify control specified multiple times";
1198                 return LDAP_PROTOCOL_ERROR;
1199         }
1200
1201         if ( ctrl->ldctl_value.bv_len ) {
1202                 rs->sr_text = "permissiveModify control value not empty";
1203                 return LDAP_PROTOCOL_ERROR;
1204         }
1205
1206         op->o_permissive_modify = ctrl->ldctl_iscritical
1207                 ? SLAP_CRITICAL_CONTROL
1208                 : SLAP_NONCRITICAL_CONTROL;
1209
1210         return LDAP_SUCCESS;
1211 }
1212 #endif
1213
1214 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1215 static int parseDomainScope (
1216         Operation *op,
1217         SlapReply *rs,
1218         LDAPControl *ctrl )
1219 {
1220         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1221                 rs->sr_text = "domainScope control specified multiple times";
1222                 return LDAP_PROTOCOL_ERROR;
1223         }
1224
1225         if ( ctrl->ldctl_value.bv_len ) {
1226                 rs->sr_text = "domainScope control value not empty";
1227                 return LDAP_PROTOCOL_ERROR;
1228         }
1229
1230         op->o_domain_scope = ctrl->ldctl_iscritical
1231                 ? SLAP_CRITICAL_CONTROL
1232                 : SLAP_NONCRITICAL_CONTROL;
1233
1234         return LDAP_SUCCESS;
1235 }
1236 #endif
1237
1238 #ifdef LDAP_CONTROL_X_TREE_DELETE
1239 static int parseTreeDelete (
1240         Operation *op,
1241         SlapReply *rs,
1242         LDAPControl *ctrl )
1243 {
1244         if ( op->o_tree_delete != SLAP_NO_CONTROL ) {
1245                 rs->sr_text = "treeDelete control specified multiple times";
1246                 return LDAP_PROTOCOL_ERROR;
1247         }
1248
1249         if ( ctrl->ldctl_value.bv_len ) {
1250                 rs->sr_text = "treeDelete control value not empty";
1251                 return LDAP_PROTOCOL_ERROR;
1252         }
1253
1254         op->o_tree_delete = ctrl->ldctl_iscritical
1255                 ? SLAP_CRITICAL_CONTROL
1256                 : SLAP_NONCRITICAL_CONTROL;
1257
1258         return LDAP_SUCCESS;
1259 }
1260 #endif
1261
1262 #ifdef LDAP_CONTORL_X_SEARCH_OPTIONS
1263 static int parseSearchOptions (
1264         Operation *op,
1265         SlapReply *rs,
1266         LDAPControl *ctrl )
1267 {
1268         BerElement *ber;
1269         ber_int_t search_flags;
1270
1271         if ( ctrl->ldctl_value.bv_len == 0 ) {
1272                 rs->sr_text = "searchOptions control value not empty";
1273                 return LDAP_PROTOCOL_ERROR;
1274         }
1275
1276         ber = ber_init( &ctrl->ldctl_value );
1277         if( ber == NULL ) {
1278                 rs->sr_text = "internal error";
1279                 return LDAP_OTHER;
1280         }
1281
1282         if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
1283                 rs->sr_text = "searchOptions control decoding error";
1284                 return LDAP_PROTOCOL_ERROR;
1285         }
1286
1287         (void) ber_free( ber, 1 );
1288
1289         if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
1290                 if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1291                         rs->sr_text = "searchOptions control specified multiple times "
1292                                 "or with domainScope control";
1293                         return LDAP_PROTOCOL_ERROR;
1294                 }
1295
1296                 op->o_domain_scope = ctrl->ldctl_iscritical
1297                         ? SLAP_CRITICAL_CONTROL
1298                         : SLAP_NONCRITICAL_CONTROL;
1299         }
1300
1301         if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
1302                 /* Other search flags not recognised so far */
1303                 rs->sr_text = "searchOptions contained unrecongized flag";
1304                 return LDAP_UNWILLING_TO_PERFORM;
1305         }
1306
1307         return LDAP_SUCCESS;
1308 }
1309 #endif
1310
1311 static int parseLDAPsync (
1312         Operation *op,
1313         SlapReply *rs,
1314         LDAPControl *ctrl )
1315 {
1316         ber_tag_t tag;
1317         BerElement *ber;
1318         ber_int_t mode;
1319         ber_len_t len;
1320         struct slap_session_entry *se;
1321
1322         if ( op->o_sync != SLAP_NO_CONTROL ) {
1323                 rs->sr_text = "Sync control specified multiple times";
1324                 return LDAP_PROTOCOL_ERROR;
1325         }
1326
1327         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
1328                 rs->sr_text = "Sync control specified with pagedResults control";
1329                 return LDAP_PROTOCOL_ERROR;
1330         }
1331
1332
1333         if ( ctrl->ldctl_value.bv_len == 0 ) {
1334                 rs->sr_text = "Sync control value is empty (or absent)";
1335                 return LDAP_PROTOCOL_ERROR;
1336         }
1337
1338         /* Parse the control value
1339          *      syncRequestValue ::= SEQUENCE {
1340          *              mode   ENUMERATED {
1341          *                      -- 0 unused
1342          *                      refreshOnly             (1),
1343          *                      -- 2 reserved
1344          *                      refreshAndPersist       (3)
1345          *              },
1346          *              cookie  syncCookie OPTIONAL
1347          *      }
1348          */
1349
1350         ber = ber_init( &ctrl->ldctl_value );
1351         if( ber == NULL ) {
1352                 rs->sr_text = "internal error";
1353                 return LDAP_OTHER;
1354         }
1355
1356         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1357                 rs->sr_text = "Sync control : mode decoding error";
1358                 return LDAP_PROTOCOL_ERROR;
1359         }
1360
1361         switch( mode ) {
1362         case LDAP_SYNC_REFRESH_ONLY:
1363                 mode = SLAP_SYNC_REFRESH;
1364                 break;
1365         case LDAP_SYNC_REFRESH_AND_PERSIST:
1366                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1367                 break;
1368         default:
1369                 rs->sr_text = "Sync control : unknown update mode";
1370                 return LDAP_PROTOCOL_ERROR;
1371         }
1372
1373         tag = ber_peek_tag( ber, &len );
1374
1375         if ( tag == LDAP_TAG_SYNC_COOKIE ) {
1376                 struct berval tmp_bv;
1377                 if (( ber_scanf( ber, /*{*/ "o", &tmp_bv )) == LBER_ERROR ) {
1378                         rs->sr_text = "Sync control : cookie decoding error";
1379                         return LDAP_PROTOCOL_ERROR;
1380                 }
1381                 ber_bvarray_add( &op->o_sync_state.octet_str, &tmp_bv );
1382                 slap_parse_sync_cookie( &op->o_sync_state );
1383         }
1384         if ( tag == LDAP_TAG_RELOAD_HINT ) {
1385                 if (( ber_scanf( ber, /*{*/ "b", &op->o_sync_rhint )) == LBER_ERROR ) {
1386                         rs->sr_text = "Sync control : rhint decoding error";
1387                         return LDAP_PROTOCOL_ERROR;
1388                 }
1389         }
1390         if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1391                         rs->sr_text = "Sync control : decoding error";
1392                         return LDAP_PROTOCOL_ERROR;
1393         }
1394
1395         (void) ber_free( ber, 1 );
1396
1397         op->o_sync_mode = (char) mode;
1398
1399         op->o_sync = ctrl->ldctl_iscritical
1400                 ? SLAP_CRITICAL_CONTROL
1401                 : SLAP_NONCRITICAL_CONTROL;
1402
1403         return LDAP_SUCCESS;
1404 }