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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1999-2003 The OpenLDAP Foundation.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms are permitted only
   7  * as authorized by the OpenLDAP Public License.  A copy of this
   8  * license is available at http://www.OpenLDAP.org/license.html or
   9  * in file LICENSE in the top-level directory of the distribution.
  10  */
  11 #include "portable.h"
  12
  13 #include <stdio.h>
  14
  15 #include <ac/string.h>
  16 #include <ac/socket.h>
  17
  18 #include "slap.h"
  19
  20 #include "../../libraries/liblber/lber-int.h"
  21
  22 #define SLAP_CTRL_FRONTEND                      0x80000000U
  23 #define SLAP_CTRL_FRONTEND_SEARCH       0x01000000U     /* for NOOP */
  24
  25 #define SLAP_CTRL_OPFLAGS                       0x0000FFFFU
  26 #define SLAP_CTRL_ABANDON                       0x00000001U
  27 #define SLAP_CTRL_ADD                           0x00002002U
  28 #define SLAP_CTRL_BIND                          0x00000004U
  29 #define SLAP_CTRL_COMPARE                       0x00001008U
  30 #define SLAP_CTRL_DELETE                        0x00002010U
  31 #define SLAP_CTRL_MODIFY                        0x00002020U
  32 #define SLAP_CTRL_RENAME                        0x00002040U
  33 #define SLAP_CTRL_SEARCH                        0x00001080U
  34 #define SLAP_CTRL_UNBIND                        0x00000100U
  35
  36 #define SLAP_CTRL_INTROGATE     (SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH)
  37 #define SLAP_CTRL_UPDATE \
  38         (SLAP_CTRL_ADD|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME)
  39 #define SLAP_CTRL_ACCESS        (SLAP_CTRL_INTROGATE|SLAP_CTRL_UPDATE)
  40
  41 typedef int (SLAP_CTRL_PARSE_FN) LDAP_P((
  42         Connection *conn,
  43         Operation *op,
  44         LDAPControl *ctrl,
  45         const char **text ));
  46
  47 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  48 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  49 static SLAP_CTRL_PARSE_FN parseNoOp;
  50 static SLAP_CTRL_PARSE_FN parsePagedResults;
  51 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  52
  53 #ifdef LDAP_CONTROL_SUBENTRIES
  54 static SLAP_CTRL_PARSE_FN parseSubentries;
  55 #endif
  56 #ifdef LDAP_CLIENT_UPDATE
  57 static SLAP_CTRL_PARSE_FN parseClientUpdate;
  58 #endif
  59
  60 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  61
  62 static char *proxy_authz_extops[] = {
  63         LDAP_EXOP_MODIFY_PASSWD,
  64         LDAP_EXOP_X_WHO_AM_I,
  65         NULL
  66 };
  67
  68 static struct slap_control {
  69         char *sc_oid;
  70         slap_mask_t sc_mask;
  71         char **sc_extendedops;
  72         SLAP_CTRL_PARSE_FN *sc_parse;
  73
  74 } supportedControls[] = {
  75         { LDAP_CONTROL_PROXY_AUTHZ,
  76                 SLAP_CTRL_FRONTEND|SLAP_CTRL_ACCESS, proxy_authz_extops,
  77                 parseProxyAuthz },
  78         { LDAP_CONTROL_MANAGEDSAIT,
  79                 SLAP_CTRL_ACCESS, NULL,
  80                 parseManageDSAit },
  81         { LDAP_CONTROL_NOOP,
  82                 SLAP_CTRL_ACCESS, NULL,
  83                 parseNoOp },
  84         { LDAP_CONTROL_PAGEDRESULTS,
  85                 SLAP_CTRL_SEARCH, NULL,
  86                 parsePagedResults },
  87         { LDAP_CONTROL_VALUESRETURNFILTER,
  88                 SLAP_CTRL_SEARCH, NULL,
  89                 parseValuesReturnFilter },
  90 #ifdef LDAP_CONTROL_SUBENTRIES
  91         { LDAP_CONTROL_SUBENTRIES,
  92                 SLAP_CTRL_SEARCH, NULL,
  93                 parseSubentries },
  94 #endif
  95 #ifdef LDAP_CLIENT_UPDATE
  96         { LDAP_CONTROL_CLIENT_UPDATE,
  97                 SLAP_CTRL_SEARCH, NULL,
  98                 parseClientUpdate },
  99 #endif /* LDAP_CLIENT_UPDATE */
 100         { NULL }
 101 };
 102
 103 char *
 104 get_supported_ctrl(int index)
 105 {
 106         return supportedControls[index].sc_oid;
 107 }
 108
 109 slap_mask_t
 110 get_supported_ctrl_mask(int index)
 111 {
 112         return supportedControls[index].sc_mask;
 113 }
 114
 115 static struct slap_control *
 116 find_ctrl( const char *oid )
 117 {
 118         int i;
 119         for( i=0; supportedControls[i].sc_oid; i++ ) {
 120                 if( strcmp( oid, supportedControls[i].sc_oid ) == 0 ) {
 121                         return &supportedControls[i];
 122                 }
 123         }
 124         return NULL;
 125 }
 126
 127 int get_ctrls(
 128         Connection *conn,
 129         Operation *op,
 130         int sendres )
 131 {
 132         int nctrls = 0;
 133         ber_tag_t tag;
 134         ber_len_t len;
 135         char *opaque;
 136         BerElement *ber = op->o_ber;
 137         struct slap_control *sc;
 138         int rc = LDAP_SUCCESS;
 139         const char *errmsg = NULL;
 140
 141         len = ber_pvt_ber_remaining(ber);
 142
 143         if( len == 0) {
 144                 /* no controls */
 145                 rc = LDAP_SUCCESS;
 146                 return rc;
 147         }
 148
 149         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 150                 if( tag == LBER_ERROR ) {
 151                         rc = SLAPD_DISCONNECT;
 152                         errmsg = "unexpected data in PDU";
 153                 }
 154
 155                 goto return_results;
 156         }
 157
 158 #ifdef NEW_LOGGING
 159         LDAP_LOG( OPERATION, ENTRY,
 160                 "get_ctrls: conn %lu\n", conn->c_connid, 0, 0 );
 161 #else
 162         Debug( LDAP_DEBUG_TRACE,
 163                 "=> get_ctrls\n", 0, 0, 0 );
 164 #endif
 165
 166         if( op->o_protocol < LDAP_VERSION3 ) {
 167                 rc = SLAPD_DISCONNECT;
 168                 errmsg = "controls require LDAPv3";
 169                 goto return_results;
 170         }
 171
 172         /* one for first control, one for termination */
 173         op->o_ctrls = ch_malloc( 2 * sizeof(LDAPControl *) );
 174
 175 #if 0
 176         if( op->ctrls == NULL ) {
 177                 rc = LDAP_NO_MEMORY;
 178                 errmsg = "no memory";
 179                 goto return_results;
 180         }
 181 #endif
 182
 183         op->o_ctrls[nctrls] = NULL;
 184
 185         /* step through each element */
 186         for( tag = ber_first_element( ber, &len, &opaque );
 187                 tag != LBER_ERROR;
 188                 tag = ber_next_element( ber, &len, opaque ) )
 189         {
 190                 LDAPControl *c;
 191                 LDAPControl **tctrls;
 192
 193                 c = ch_calloc( 1, sizeof(LDAPControl) );
 194
 195 #if 0
 196                 if( c == NULL ) {
 197                         ldap_controls_free(op->o_ctrls);
 198                         op->o_ctrls = NULL;
 199
 200                         rc = LDAP_NO_MEMORY;
 201                         errmsg = "no memory";
 202                         goto return_results;
 203                 }
 204 #endif
 205
 206                 /* allocate pointer space for current controls (nctrls)
 207                  * + this control + extra NULL
 208                  */
 209                 tctrls = ch_realloc( op->o_ctrls,
 210                         (nctrls+2) * sizeof(LDAPControl *));
 211
 212 #if 0
 213                 if( tctrls == NULL ) {
 214                         ch_free( c );
 215                         ldap_controls_free(op->o_ctrls);
 216                         op->o_ctrls = NULL;
 217
 218                         rc = LDAP_NO_MEMORY;
 219                         errmsg = "no memory";
 220                         goto return_results;
 221                 }
 222 #endif
 223                 op->o_ctrls = tctrls;
 224
 225                 op->o_ctrls[nctrls++] = c;
 226                 op->o_ctrls[nctrls] = NULL;
 227
 228                 tag = ber_scanf( ber, "{a" /*}*/, &c->ldctl_oid );
 229
 230                 if( tag == LBER_ERROR ) {
 231 #ifdef NEW_LOGGING
 232                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 233                                 conn->c_connid, 0, 0 );
 234 #else
 235                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 236                                 0, 0, 0 );
 237 #endif
 238
 239                         ldap_controls_free( op->o_ctrls );
 240                         op->o_ctrls = NULL;
 241                         rc = SLAPD_DISCONNECT;
 242                         errmsg = "decoding controls error";
 243                         goto return_results;
 244
 245                 } else if( c->ldctl_oid == NULL ) {
 246 #ifdef NEW_LOGGING
 247                         LDAP_LOG( OPERATION, INFO,
 248                                 "get_ctrls: conn %lu got emtpy OID.\n",
 249                                 conn->c_connid, 0, 0 );
 250 #else
 251                         Debug( LDAP_DEBUG_TRACE,
 252                                 "get_ctrls: conn %lu got emtpy OID.\n",
 253                                 conn->c_connid, 0, 0 );
 254 #endif
 255
 256                         ldap_controls_free( op->o_ctrls );
 257                         op->o_ctrls = NULL;
 258                         rc = LDAP_PROTOCOL_ERROR;
 259                         errmsg = "OID field is empty";
 260                         goto return_results;
 261                 }
 262
 263                 tag = ber_peek_tag( ber, &len );
 264
 265                 if( tag == LBER_BOOLEAN ) {
 266                         ber_int_t crit;
 267                         tag = ber_scanf( ber, "b", &crit );
 268
 269                         if( tag == LBER_ERROR ) {
 270 #ifdef NEW_LOGGING
 271                                 LDAP_LOG( OPERATION, INFO,
 272                                         "get_ctrls: conn %lu get crit failed.\n",
 273                                         conn->c_connid, 0, 0 );
 274 #else
 275                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 276                                         0, 0, 0 );
 277 #endif
 278                                 ldap_controls_free( op->o_ctrls );
 279                                 op->o_ctrls = NULL;
 280                                 rc = SLAPD_DISCONNECT;
 281                                 errmsg = "decoding controls error";
 282                                 goto return_results;
 283                         }
 284
 285                         c->ldctl_iscritical = (crit != 0);
 286                         tag = ber_peek_tag( ber, &len );
 287                 }
 288
 289                 if( tag == LBER_OCTETSTRING ) {
 290                         tag = ber_scanf( ber, "o", &c->ldctl_value );
 291
 292                         if( tag == LBER_ERROR ) {
 293 #ifdef NEW_LOGGING
 294                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 295                                         "%s (%scritical): get value failed.\n",
 296                                         conn->c_connid, c->ldctl_oid,
 297                                         c->ldctl_iscritical ? "" : "non" );
 298 #else
 299                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 300                                         "%s (%scritical): get value failed.\n",
 301                                         conn->c_connid, c->ldctl_oid,
 302                                         c->ldctl_iscritical ? "" : "non" );
 303 #endif
 304                                 ldap_controls_free( op->o_ctrls );
 305                                 op->o_ctrls = NULL;
 306                                 rc = SLAPD_DISCONNECT;
 307                                 errmsg = "decoding controls error";
 308                                 goto return_results;
 309                         }
 310                 }
 311
 312 #ifdef NEW_LOGGING
 313                 LDAP_LOG( OPERATION, INFO,
 314                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 315                         conn->c_connid, c->ldctl_oid, c->ldctl_iscritical ? "" : "non" );
 316 #else
 317                 Debug( LDAP_DEBUG_TRACE,
 318                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 319                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 320 #endif
 321
 322                 sc = find_ctrl( c->ldctl_oid );
 323                 if( sc != NULL ) {
 324                         /* recognized control */
 325                         slap_mask_t tagmask;
 326                         switch( op->o_tag ) {
 327                         case LDAP_REQ_ADD:
 328                                 tagmask = SLAP_CTRL_ADD;
 329                                 break;
 330                         case LDAP_REQ_BIND:
 331                                 tagmask = SLAP_CTRL_BIND;
 332                                 break;
 333                         case LDAP_REQ_COMPARE:
 334                                 tagmask = SLAP_CTRL_COMPARE;
 335                                 break;
 336                         case LDAP_REQ_DELETE:
 337                                 tagmask = SLAP_CTRL_DELETE;
 338                                 break;
 339                         case LDAP_REQ_MODIFY:
 340                                 tagmask = SLAP_CTRL_MODIFY;
 341                                 break;
 342                         case LDAP_REQ_RENAME:
 343                                 tagmask = SLAP_CTRL_RENAME;
 344                                 break;
 345                         case LDAP_REQ_SEARCH:
 346                                 tagmask = SLAP_CTRL_SEARCH;
 347                                 break;
 348                         case LDAP_REQ_UNBIND:
 349                                 tagmask = SLAP_CTRL_UNBIND;
 350                                 break;
 351                         case LDAP_REQ_ABANDON:
 352                                 tagmask = SLAP_CTRL_ABANDON;
 353                                 break;
 354                         case LDAP_REQ_EXTENDED:
 355                                 tagmask=~0L;
 356                                 assert( op->o_extendedop != NULL );
 357                                 if( sc->sc_extendedops != NULL ) {
 358                                         int i;
 359                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 360                                                 if( strcmp( op->o_extendedop, sc->sc_extendedops[i] )
 361                                                         == 0 )
 362                                                 {
 363                                                         tagmask=0L;
 364                                                         break;
 365                                                 }
 366                                         }
 367                                 }
 368                                 break;
 369                         default:
 370                                 rc = LDAP_OTHER;
 371                                 errmsg = "controls internal error";
 372                                 goto return_results;
 373                         }
 374
 375                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 376                                 /* available extension */
 377
 378                                 if( !sc->sc_parse ) {
 379                                         rc = LDAP_OTHER;
 380                                         errmsg = "not yet implemented";
 381                                         goto return_results;
 382                                 }
 383
 384                                 rc = sc->sc_parse( conn, op, c, &errmsg );
 385
 386                                 if( rc != LDAP_SUCCESS ) goto return_results;
 387
 388                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 389                                         /* kludge to disable backend_control() check */
 390                                         c->ldctl_iscritical = 0;
 391
 392                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 393                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 394                                 {
 395                                         /* kludge to disable backend_control() check */
 396                                         c->ldctl_iscritical = 0;
 397                                 }
 398
 399                         } else if( c->ldctl_iscritical ) {
 400                                 /* unavailable CRITICAL control */
 401                                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 402                                 errmsg = "critical extension is unavailable";
 403                                 goto return_results;
 404                         }
 405
 406                 } else if( c->ldctl_iscritical ) {
 407                         /* unrecognized CRITICAL control */
 408                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 409                         errmsg = "critical extension is not recognized";
 410                         goto return_results;
 411                 }
 412         }
 413
 414 return_results:
 415 #ifdef NEW_LOGGING
 416         LDAP_LOG( OPERATION, RESULTS,
 417                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 418                 nctrls, rc, errmsg ? errmsg : "" );
 419 #else
 420         Debug( LDAP_DEBUG_TRACE,
 421                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 422                 nctrls, rc, errmsg ? errmsg : "");
 423 #endif
 424
 425         if( sendres && rc != LDAP_SUCCESS ) {
 426                 if( rc == SLAPD_DISCONNECT ) {
 427                         send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, errmsg );
 428                 } else {
 429                         send_ldap_result( conn, op, rc,
 430                                 NULL, errmsg, NULL, NULL );
 431                 }
 432         }
 433
 434         return rc;
 435 }
 436
 437 static int parseManageDSAit (
 438         Connection *conn,
 439         Operation *op,
 440         LDAPControl *ctrl,
 441         const char **text )
 442 {
 443         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 444                 *text = "manageDSAit control specified multiple times";
 445                 return LDAP_PROTOCOL_ERROR;
 446         }
 447
 448         if ( ctrl->ldctl_value.bv_len ) {
 449                 *text = "manageDSAit control value not empty";
 450                 return LDAP_PROTOCOL_ERROR;
 451         }
 452
 453         op->o_managedsait = ctrl->ldctl_iscritical
 454                 ? SLAP_CRITICAL_CONTROL
 455                 : SLAP_NONCRITICAL_CONTROL;
 456
 457         return LDAP_SUCCESS;
 458 }
 459
 460 static int parseProxyAuthz (
 461         Connection *conn,
 462         Operation *op,
 463         LDAPControl *ctrl,
 464         const char **text )
 465 {
 466         int rc;
 467         struct berval dn;
 468
 469         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 470                 *text = "proxy authorization control specified multiple times";
 471                 return LDAP_PROTOCOL_ERROR;
 472         }
 473
 474         op->o_proxy_authz = ctrl->ldctl_iscritical
 475                 ? SLAP_CRITICAL_CONTROL
 476                 : SLAP_NONCRITICAL_CONTROL;
 477
 478 #ifdef NEW_LOGGING
 479         LDAP_LOG( OPERATION, ARGS,
 480                 "parseProxyAuthz: conn %d authzid=\"%s\"\n",
 481                 conn->c_connid,
 482                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 483                 0 );
 484 #else
 485         Debug( LDAP_DEBUG_ARGS,
 486                 "parseProxyAuthz: conn %d authzid=\"%s\"\n",
 487                 conn->c_connid,
 488                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 489                 0 );
 490 #endif
 491
 492         if( ctrl->ldctl_value.bv_len == 0 ) {
 493 #ifdef NEW_LOGGING
 494                 LDAP_LOG( OPERATION, RESULTS,
 495                         "parseProxyAuthz: conn=%d anonymous\n",
 496                         conn->c_connid, 0, 0 );
 497 #else
 498                 Debug( LDAP_DEBUG_TRACE,
 499                         "parseProxyAuthz: conn=%d anonymous\n",
 500                         conn->c_connid, 0, 0 );
 501 #endif
 502
 503                 /* anonymous */
 504                 free( op->o_dn.bv_val );
 505                 op->o_dn.bv_len = 0;
 506                 op->o_dn.bv_val = ch_strdup( "" );
 507
 508                 free( op->o_ndn.bv_val );
 509                 op->o_ndn.bv_len = 0;
 510                 op->o_ndn.bv_val = ch_strdup( "" );
 511
 512                 return LDAP_SUCCESS;
 513         }
 514
 515         rc = slap_sasl_getdn( conn,
 516                 ctrl->ldctl_value.bv_val, ctrl->ldctl_value.bv_len,
 517                 NULL, &dn, SLAP_GETDN_AUTHZID );
 518
 519         if( rc != LDAP_SUCCESS || !dn.bv_len ) {
 520                 *text = "authzId mapping failed";
 521                 return LDAP_PROXY_AUTHZ_FAILURE;
 522         }
 523
 524 #ifdef NEW_LOGGING
 525         LDAP_LOG( OPERATION, RESULTS,
 526                 "parseProxyAuthz: conn=%d \"%s\"\n",
 527                 conn->c_connid,
 528                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 529 #else
 530         Debug( LDAP_DEBUG_TRACE,
 531                 "parseProxyAuthz: conn=%d \"%s\"\n",
 532                 conn->c_connid,
 533                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 534 #endif
 535
 536         rc = slap_sasl_authorized( conn, &op->o_ndn, &dn );
 537
 538         if( rc ) {
 539                 ch_free( dn.bv_val );
 540                 *text = "not authorized to assume identity";
 541                 return LDAP_PROXY_AUTHZ_FAILURE;
 542         }
 543
 544         ch_free( op->o_dn.bv_val );
 545         ch_free( op->o_ndn.bv_val );
 546
 547         op->o_dn.bv_val = NULL;
 548         op->o_ndn = dn;
 549         ber_dupbv( &op->o_dn, &dn );
 550
 551         return LDAP_SUCCESS;
 552 }
 553
 554 static int parseNoOp (
 555         Connection *conn,
 556         Operation *op,
 557         LDAPControl *ctrl,
 558         const char **text )
 559 {
 560         if ( op->o_noop != SLAP_NO_CONTROL ) {
 561                 *text = "noop control specified multiple times";
 562                 return LDAP_PROTOCOL_ERROR;
 563         }
 564
 565         if ( ctrl->ldctl_value.bv_len ) {
 566                 *text = "noop control value not empty";
 567                 return LDAP_PROTOCOL_ERROR;
 568         }
 569
 570         op->o_noop = ctrl->ldctl_iscritical
 571                 ? SLAP_CRITICAL_CONTROL
 572                 : SLAP_NONCRITICAL_CONTROL;
 573
 574         return LDAP_SUCCESS;
 575 }
 576
 577 static int parsePagedResults (
 578         Connection *conn,
 579         Operation *op,
 580         LDAPControl *ctrl,
 581         const char **text )
 582 {
 583         ber_tag_t tag;
 584         ber_int_t size;
 585         BerElement *ber;
 586         struct berval cookie = { 0, NULL };
 587
 588         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 589                 *text = "paged results control specified multiple times";
 590                 return LDAP_PROTOCOL_ERROR;
 591         }
 592
 593         if ( ctrl->ldctl_value.bv_len == 0 ) {
 594                 *text = "paged results control value is empty (or absent)";
 595                 return LDAP_PROTOCOL_ERROR;
 596         }
 597
 598         /* Parse the control value
 599          *      realSearchControlValue ::= SEQUENCE {
 600          *              size    INTEGER (0..maxInt),
 601          *                              -- requested page size from client
 602          *                              -- result set size estimate from server
 603          *              cookie  OCTET STRING
 604          */
 605         ber = ber_init( &ctrl->ldctl_value );
 606         if( ber == NULL ) {
 607                 *text = "internal error";
 608                 return LDAP_OTHER;
 609         }
 610
 611         tag = ber_scanf( ber, "{im}", &size, &cookie );
 612         (void) ber_free( ber, 1 );
 613
 614         if( tag == LBER_ERROR ) {
 615                 *text = "paged results control could not be decoded";
 616                 return LDAP_PROTOCOL_ERROR;
 617         }
 618
 619         if( size < 0 ) {
 620                 *text = "paged results control size invalid";
 621                 return LDAP_PROTOCOL_ERROR;
 622         }
 623
 624         if( cookie.bv_len ) {
 625                 PagedResultsCookie reqcookie;
 626                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 627                         /* bad cookie */
 628                         *text = "paged results cookie is invalid";
 629                         return LDAP_PROTOCOL_ERROR;
 630                 }
 631
 632                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 633
 634                 if( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 635                         /* bad cookie */
 636                         *text = "paged results cookie is invalid";
 637                         return LDAP_PROTOCOL_ERROR;
 638
 639                 } else if( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 640                         *text = "paged results cookie is invalid or old";
 641                         return LDAP_UNWILLING_TO_PERFORM;
 642                 }
 643         } else {
 644                 /* Initial request.  Initialize state. */
 645                 op->o_pagedresults_state.ps_cookie = 0;
 646                 op->o_pagedresults_state.ps_id = NOID;
 647         }
 648
 649         op->o_pagedresults_size = size;
 650
 651         op->o_pagedresults = ctrl->ldctl_iscritical
 652                 ? SLAP_CRITICAL_CONTROL
 653                 : SLAP_NONCRITICAL_CONTROL;
 654
 655         return LDAP_SUCCESS;
 656 }
 657
 658 int parseValuesReturnFilter (
 659         Connection *conn,
 660         Operation *op,
 661         LDAPControl *ctrl,
 662         const char **text )
 663 {
 664         int             rc;
 665         BerElement      *ber;
 666         struct berval   fstr = { 0, NULL };
 667         const char *err_msg = "";
 668
 669         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
 670                 *text = "valuesReturnFilter control specified multiple times";
 671                 return LDAP_PROTOCOL_ERROR;
 672         }
 673
 674         if ( ctrl->ldctl_value.bv_len == 0 ) {
 675                 *text = "valuesReturnFilter control value is empty (or absent)";
 676                 return LDAP_PROTOCOL_ERROR;
 677         }
 678
 679         ber = ber_init( &(ctrl->ldctl_value) );
 680         if (ber == NULL) {
 681                 *text = "internal error";
 682                 return LDAP_OTHER;
 683         }
 684
 685         rc = get_vrFilter( conn, ber, &(op->vrFilter), &err_msg);
 686
 687         if( rc != LDAP_SUCCESS ) {
 688                 text = &err_msg;
 689                 if( rc == SLAPD_DISCONNECT ) {
 690                         send_ldap_disconnect( conn, op,
 691                                 LDAP_PROTOCOL_ERROR, *text );
 692                 } else {
 693                         send_ldap_result( conn, op, rc,
 694                                 NULL, *text, NULL, NULL );
 695                 }
 696                 if( fstr.bv_val != NULL) free( fstr.bv_val );
 697                 if( op->vrFilter != NULL) vrFilter_free( op->vrFilter );
 698
 699         } else {
 700                 vrFilter2bv( op->vrFilter, &fstr );
 701         }
 702
 703 #ifdef NEW_LOGGING
 704         LDAP_LOG( OPERATION, ARGS,
 705                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
 706                 conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 707 #else
 708         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
 709                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
 710 #endif
 711
 712         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
 713                 ? SLAP_CRITICAL_CONTROL
 714                 : SLAP_NONCRITICAL_CONTROL;
 715
 716         return LDAP_SUCCESS;
 717 }
 718
 719 #ifdef LDAP_CONTROL_SUBENTRIES
 720 static int parseSubentries (
 721         Connection *conn,
 722         Operation *op,
 723         LDAPControl *ctrl,
 724         const char **text )
 725 {
 726         if ( op->o_subentries != SLAP_NO_CONTROL ) {
 727                 *text = "subentries control specified multiple times";
 728                 return LDAP_PROTOCOL_ERROR;
 729         }
 730
 731         /* FIXME: should use BER library */
 732         if( ( ctrl->ldctl_value.bv_len != 3 )
 733                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
 734                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
 735         {
 736                 *text = "subentries control value encoding is bogus";
 737                 return LDAP_PROTOCOL_ERROR;
 738         }
 739
 740         op->o_subentries = ctrl->ldctl_iscritical
 741                 ? SLAP_CRITICAL_CONTROL
 742                 : SLAP_NONCRITICAL_CONTROL;
 743
 744         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
 745
 746         return LDAP_SUCCESS;
 747 }
 748 #endif
 749
 750 #ifdef LDAP_CLIENT_UPDATE
 751 static int parseClientUpdate (
 752         Connection *conn,
 753         Operation *op,
 754         LDAPControl *ctrl,
 755         const char **text )
 756 {
 757         ber_tag_t tag;
 758         BerElement *ber;
 759         ber_int_t type;
 760         ber_int_t interval;
 761         ber_len_t len;
 762         struct berval scheme = { 0, NULL };
 763         struct berval cookie = { 0, NULL };
 764
 765         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
 766                 *text = "LCUP client update control specified multiple times";
 767                 return LDAP_PROTOCOL_ERROR;
 768         }
 769
 770         if ( ctrl->ldctl_value.bv_len == 0 ) {
 771                 *text = "LCUP client update control value is empty (or absent)";
 772                 return LDAP_PROTOCOL_ERROR;
 773         }
 774
 775         /* Parse the control value
 776          *      ClientUpdateControlValue ::= SEQUENCE {
 777          *              updateType      ENUMERATED {
 778          *                                      synchronizeOnly {0},
 779          *                                      synchronizeAndPersist {1},
 780          *                                      persistOnly {2} },
 781          *              sendCookieInterval INTEGER OPTIONAL,
 782          *              cookie          LCUPCookie OPTIONAL
 783          *      }
 784          */
 785
 786         ber = ber_init( &ctrl->ldctl_value );
 787         if( ber == NULL ) {
 788                 *text = "internal error";
 789                 return LDAP_OTHER;
 790         }
 791
 792         if ( (tag = ber_scanf( ber, "{i" /*}*/, &type )) == LBER_ERROR ) {
 793                 *text = "LCUP client update control : decoding error";
 794                 return LDAP_PROTOCOL_ERROR;
 795         }
 796
 797         switch( type ) {
 798         case LDAP_CUP_SYNC_ONLY:
 799                 type = SLAP_LCUP_SYNC;
 800                 break;
 801         case LDAP_CUP_SYNC_AND_PERSIST:
 802                 type = SLAP_LCUP_SYNC_AND_PERSIST;
 803                 break;
 804         case LDAP_CUP_PERSIST_ONLY:
 805                 type = SLAP_LCUP_PERSIST;
 806                 break;
 807         default:
 808                 *text = "LCUP client update control : unknown update type";
 809                 return LDAP_PROTOCOL_ERROR;
 810         }
 811
 812         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
 813                 *text = "LCUP client update control : decoding error";
 814                 return LDAP_PROTOCOL_ERROR;
 815         }
 816
 817         if ( tag == LDAP_TAG_INTERVAL ) {
 818                 if ( (tag = ber_scanf( ber, "i", &interval )) == LBER_ERROR ) {
 819                         *text = "LCUP client update control : decoding error";
 820                         return LDAP_PROTOCOL_ERROR;
 821                 }
 822
 823                 if ( interval <= 0 ) {
 824                         /* server chooses interval */
 825                         interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
 826                 }
 827
 828         } else {
 829                 /* server chooses interval */
 830                 interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
 831         }
 832
 833         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
 834                 *text = "LCUP client update control : decoding error";
 835                 return LDAP_PROTOCOL_ERROR;
 836         }
 837
 838         if ( tag == LDAP_TAG_COOKIE ) {
 839                 if ( (tag = ber_scanf( ber, /*{*/ "{mm}}",
 840                                         &scheme, &cookie )) == LBER_ERROR ) {
 841                         *text = "LCUP client update control : decoding error";
 842                         return LDAP_PROTOCOL_ERROR;
 843                 }
 844         }
 845
 846         /* TODO : Cookie Scheme Validation */
 847 #if 0
 848         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
 849                 *text = "Unsupported LCUP cookie scheme";
 850                 return LCUP_UNSUPPORTED_SCHEME;
 851         }
 852
 853         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
 854                 *text = "Invalid LCUP cookie";
 855                 return LCUP_INVALID_COOKIE;
 856         }
 857 #endif
 858
 859         ber_dupbv( &op->o_clientupdate_state, &cookie );
 860
 861         (void) ber_free( ber, 1 );
 862
 863         op->o_clientupdate_type = (char) type;
 864         op->o_clientupdate_interval = interval;
 865
 866         op->o_clientupdate = ctrl->ldctl_iscritical
 867                 ? SLAP_CRITICAL_CONTROL
 868                 : SLAP_NONCRITICAL_CONTROL;
 869
 870         return LDAP_SUCCESS;
 871 }
 872 #endif /* LDAP_CLIENT_UPDATE */