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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1999-2002 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, "get_ctrls: conn %lu\n", conn->c_connid, 0, 0 );
 160 #else
 161         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls\n", 0, 0, 0 );
 162 #endif
 163         if( op->o_protocol < LDAP_VERSION3 ) {
 164                 rc = SLAPD_DISCONNECT;
 165                 errmsg = "controls require LDAPv3";
 166                 goto return_results;
 167         }
 168
 169         /* one for first control, one for termination */
 170         op->o_ctrls = ch_malloc( 2 * sizeof(LDAPControl *) );
 171
 172 #if 0
 173         if( op->ctrls == NULL ) {
 174                 rc = LDAP_NO_MEMORY;
 175                 errmsg = "no memory";
 176                 goto return_results;
 177         }
 178 #endif
 179
 180         op->o_ctrls[nctrls] = NULL;
 181
 182         /* step through each element */
 183         for( tag = ber_first_element( ber, &len, &opaque );
 184                 tag != LBER_ERROR;
 185                 tag = ber_next_element( ber, &len, opaque ) )
 186         {
 187                 LDAPControl *c;
 188                 LDAPControl **tctrls;
 189
 190                 c = ch_calloc( 1, sizeof(LDAPControl) );
 191
 192 #if 0
 193                 if( c == NULL ) {
 194                         ldap_controls_free(op->o_ctrls);
 195                         op->o_ctrls = NULL;
 196
 197                         rc = LDAP_NO_MEMORY;
 198                         errmsg = "no memory";
 199                         goto return_results;
 200                 }
 201 #endif
 202
 203                 /* allocate pointer space for current controls (nctrls)
 204                  * + this control + extra NULL
 205                  */
 206                 tctrls = ch_realloc( op->o_ctrls,
 207                         (nctrls+2) * sizeof(LDAPControl *));
 208
 209 #if 0
 210                 if( tctrls == NULL ) {
 211                         ch_free( c );
 212                         ldap_controls_free(op->o_ctrls);
 213                         op->o_ctrls = NULL;
 214
 215                         rc = LDAP_NO_MEMORY;
 216                         errmsg = "no memory";
 217                         goto return_results;
 218                 }
 219 #endif
 220                 op->o_ctrls = tctrls;
 221
 222                 op->o_ctrls[nctrls++] = c;
 223                 op->o_ctrls[nctrls] = NULL;
 224
 225                 tag = ber_scanf( ber, "{a" /*}*/, &c->ldctl_oid );
 226
 227                 if( tag == LBER_ERROR ) {
 228 #ifdef NEW_LOGGING
 229                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 230                                 conn->c_connid, 0, 0 );
 231 #else
 232                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 233                                 0, 0, 0 );
 234 #endif
 235                         ldap_controls_free( op->o_ctrls );
 236                         op->o_ctrls = NULL;
 237                         rc = SLAPD_DISCONNECT;
 238                         errmsg = "decoding controls error";
 239                         goto return_results;
 240                 }
 241
 242                 tag = ber_peek_tag( ber, &len );
 243
 244                 if( tag == LBER_BOOLEAN ) {
 245                         ber_int_t crit;
 246                         tag = ber_scanf( ber, "b", &crit );
 247
 248                         if( tag == LBER_ERROR ) {
 249 #ifdef NEW_LOGGING
 250                                 LDAP_LOG( OPERATION, INFO,
 251                                         "get_ctrls: conn %lu get crit failed.\n",
 252                                         conn->c_connid, 0, 0 );
 253 #else
 254                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 255                                         0, 0, 0 );
 256 #endif
 257                                 ldap_controls_free( op->o_ctrls );
 258                                 op->o_ctrls = NULL;
 259                                 rc = SLAPD_DISCONNECT;
 260                                 errmsg = "decoding controls error";
 261                                 goto return_results;
 262                         }
 263
 264                         c->ldctl_iscritical = (crit != 0);
 265                         tag = ber_peek_tag( ber, &len );
 266                 }
 267
 268                 if( tag == LBER_OCTETSTRING ) {
 269                         tag = ber_scanf( ber, "o", &c->ldctl_value );
 270
 271                         if( tag == LBER_ERROR ) {
 272 #ifdef NEW_LOGGING
 273                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 274                                         "%s (%scritical): get value failed.\n",
 275                                         conn->c_connid, c->ldctl_oid ? c->ldctl_oid : "(NULL)",
 276                                         c->ldctl_iscritical ? "" : "non" );
 277 #else
 278                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 279                                         "%s (%scritical): get value failed.\n",
 280                                         conn->c_connid,
 281                                         c->ldctl_oid ? c->ldctl_oid : "(NULL)",
 282                                         c->ldctl_iscritical ? "" : "non" );
 283 #endif
 284                                 ldap_controls_free( op->o_ctrls );
 285                                 op->o_ctrls = NULL;
 286                                 rc = SLAPD_DISCONNECT;
 287                                 errmsg = "decoding controls error";
 288                                 goto return_results;
 289                         }
 290                 }
 291
 292 #ifdef NEW_LOGGING
 293                 LDAP_LOG( OPERATION, INFO,
 294                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 295                         conn->c_connid, c->ldctl_oid ? c->ldctl_oid : "(NULL)",
 296                         c->ldctl_iscritical ? "" : "non" );
 297 #else
 298                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 299                         c->ldctl_oid ? c->ldctl_oid : "(NULL)",
 300                         c->ldctl_iscritical ? "" : "non",
 301                         0 );
 302 #endif
 303
 304                 sc = find_ctrl( c->ldctl_oid );
 305                 if( sc != NULL ) {
 306                         /* recognized control */
 307                         slap_mask_t tagmask;
 308                         switch( op->o_tag ) {
 309                         case LDAP_REQ_ADD:
 310                                 tagmask = SLAP_CTRL_ADD;
 311                                 break;
 312                         case LDAP_REQ_BIND:
 313                                 tagmask = SLAP_CTRL_BIND;
 314                                 break;
 315                         case LDAP_REQ_COMPARE:
 316                                 tagmask = SLAP_CTRL_COMPARE;
 317                                 break;
 318                         case LDAP_REQ_DELETE:
 319                                 tagmask = SLAP_CTRL_DELETE;
 320                                 break;
 321                         case LDAP_REQ_MODIFY:
 322                                 tagmask = SLAP_CTRL_MODIFY;
 323                                 break;
 324                         case LDAP_REQ_RENAME:
 325                                 tagmask = SLAP_CTRL_RENAME;
 326                                 break;
 327                         case LDAP_REQ_SEARCH:
 328                                 tagmask = SLAP_CTRL_SEARCH;
 329                                 break;
 330                         case LDAP_REQ_UNBIND:
 331                                 tagmask = SLAP_CTRL_UNBIND;
 332                                 break;
 333                         case LDAP_REQ_ABANDON:
 334                                 tagmask = SLAP_CTRL_ABANDON;
 335                                 break;
 336                         case LDAP_REQ_EXTENDED:
 337                                 tagmask=~0L;
 338                                 assert( op->o_extendedop != NULL );
 339                                 if( sc->sc_extendedops != NULL ) {
 340                                         int i;
 341                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 342                                                 if( strcmp( op->o_extendedop, sc->sc_extendedops[i] )
 343                                                         == 0 )
 344                                                 {
 345                                                         tagmask=0L;
 346                                                         break;
 347                                                 }
 348                                         }
 349                                 }
 350                                 break;
 351                         default:
 352                                 rc = LDAP_OTHER;
 353                                 errmsg = "controls internal error";
 354                                 goto return_results;
 355                         }
 356
 357                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 358                                 /* available extension */
 359
 360                                 if( !sc->sc_parse ) {
 361                                         rc = LDAP_OTHER;
 362                                         errmsg = "not yet implemented";
 363                                         goto return_results;
 364                                 }
 365
 366                                 rc = sc->sc_parse( conn, op, c, &errmsg );
 367
 368                                 if( rc != LDAP_SUCCESS ) goto return_results;
 369
 370                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 371                                         /* kludge to disable backend_control() check */
 372                                         c->ldctl_iscritical = 0;
 373
 374                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 375                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 376                                 {
 377                                         /* kludge to disable backend_control() check */
 378                                         c->ldctl_iscritical = 0;
 379                                 }
 380
 381                         } else if( c->ldctl_iscritical ) {
 382                                 /* unavailable CRITICAL control */
 383                                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 384                                 errmsg = "critical extension is unavailable";
 385                                 goto return_results;
 386                         }
 387
 388                 } else if( c->ldctl_iscritical ) {
 389                         /* unrecognized CRITICAL control */
 390                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 391                         errmsg = "critical extension is not recognized";
 392                         goto return_results;
 393                 }
 394         }
 395
 396 return_results:
 397 #ifdef NEW_LOGGING
 398         LDAP_LOG( OPERATION, RESULTS,
 399                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 400                 nctrls, rc, errmsg ? errmsg : "" );
 401 #else
 402         Debug( LDAP_DEBUG_TRACE,
 403                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 404                 nctrls, rc, errmsg ? errmsg : "");
 405 #endif
 406
 407         if( sendres && rc != LDAP_SUCCESS ) {
 408                 if( rc == SLAPD_DISCONNECT ) {
 409                         send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, errmsg );
 410                 } else {
 411                         send_ldap_result( conn, op, rc,
 412                                 NULL, errmsg, NULL, NULL );
 413                 }
 414         }
 415
 416         return rc;
 417 }
 418
 419 static int parseManageDSAit (
 420         Connection *conn,
 421         Operation *op,
 422         LDAPControl *ctrl,
 423         const char **text )
 424 {
 425         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 426                 *text = "manageDSAit control specified multiple times";
 427                 return LDAP_PROTOCOL_ERROR;
 428         }
 429
 430         if ( ctrl->ldctl_value.bv_len ) {
 431                 *text = "manageDSAit control value not empty";
 432                 return LDAP_PROTOCOL_ERROR;
 433         }
 434
 435         op->o_managedsait = ctrl->ldctl_iscritical
 436                 ? SLAP_CRITICAL_CONTROL
 437                 : SLAP_NONCRITICAL_CONTROL;
 438
 439         return LDAP_SUCCESS;
 440 }
 441
 442 static int parseProxyAuthz (
 443         Connection *conn,
 444         Operation *op,
 445         LDAPControl *ctrl,
 446         const char **text )
 447 {
 448         int rc;
 449         struct berval dn;
 450
 451         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 452                 *text = "proxy authorization control specified multiple times";
 453                 return LDAP_PROTOCOL_ERROR;
 454         }
 455
 456         op->o_proxy_authz = ctrl->ldctl_iscritical
 457                 ? SLAP_CRITICAL_CONTROL
 458                 : SLAP_NONCRITICAL_CONTROL;
 459
 460 #ifdef NEW_LOGGING
 461         LDAP_LOG( OPERATION, ARGS,
 462                 "parseProxyAuthz: conn %d authzid=\"%s\"\n",
 463                 conn->c_connid,
 464                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 465                 0 );
 466 #else
 467         Debug( LDAP_DEBUG_ARGS,
 468                 "parseProxyAuthz: conn %d authzid=\"%s\"\n",
 469                 conn->c_connid,
 470                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 471                 0 );
 472 #endif
 473
 474         if( ctrl->ldctl_value.bv_len == 0 ) {
 475 #ifdef NEW_LOGGING
 476                 LDAP_LOG( OPERATION, RESULTS,
 477                         "parseProxyAuthz: conn=%d anonymous\n",
 478                         conn->c_connid, 0, 0 );
 479 #else
 480                 Debug( LDAP_DEBUG_TRACE,
 481                         "parseProxyAuthz: conn=%d anonymous\n",
 482                         conn->c_connid, 0, 0 );
 483 #endif
 484
 485                 /* anonymous */
 486                 free( op->o_dn.bv_val );
 487                 op->o_dn.bv_len = 0;
 488                 op->o_dn.bv_val = ch_strdup( "" );
 489
 490                 free( op->o_ndn.bv_val );
 491                 op->o_ndn.bv_len = 0;
 492                 op->o_ndn.bv_val = ch_strdup( "" );
 493
 494                 return LDAP_SUCCESS;
 495         }
 496
 497         rc = slap_sasl_getdn( conn,
 498                 ctrl->ldctl_value.bv_val, ctrl->ldctl_value.bv_len,
 499                 NULL, &dn, SLAP_GETDN_AUTHZID );
 500
 501         if( rc != LDAP_SUCCESS || !dn.bv_len ) {
 502                 *text = "authzId mapping failed";
 503                 return LDAP_PROXY_AUTHZ_FAILURE;
 504         }
 505
 506 #ifdef NEW_LOGGING
 507         LDAP_LOG( OPERATION, RESULTS,
 508                 "parseProxyAuthz: conn=%d \"%s\"\n",
 509                 conn->c_connid,
 510                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 511 #else
 512         Debug( LDAP_DEBUG_TRACE,
 513                 "parseProxyAuthz: conn=%d \"%s\"\n",
 514                 conn->c_connid,
 515                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 516 #endif
 517
 518         rc = slap_sasl_authorized( conn, &op->o_ndn, &dn );
 519
 520         if( rc ) {
 521                 ch_free( dn.bv_val );
 522                 *text = "not authorized to assume identity";
 523                 return LDAP_PROXY_AUTHZ_FAILURE;
 524         }
 525
 526         ch_free( op->o_dn.bv_val );
 527         ch_free( op->o_ndn.bv_val );
 528
 529         op->o_dn.bv_val = NULL;
 530         op->o_ndn = dn;
 531         ber_dupbv( &op->o_dn, &dn );
 532
 533         return LDAP_SUCCESS;
 534 }
 535
 536 static int parseNoOp (
 537         Connection *conn,
 538         Operation *op,
 539         LDAPControl *ctrl,
 540         const char **text )
 541 {
 542         if ( op->o_noop != SLAP_NO_CONTROL ) {
 543                 *text = "noop control specified multiple times";
 544                 return LDAP_PROTOCOL_ERROR;
 545         }
 546
 547         if ( ctrl->ldctl_value.bv_len ) {
 548                 *text = "noop control value not empty";
 549                 return LDAP_PROTOCOL_ERROR;
 550         }
 551
 552         op->o_noop = ctrl->ldctl_iscritical
 553                 ? SLAP_CRITICAL_CONTROL
 554                 : SLAP_NONCRITICAL_CONTROL;
 555
 556         return LDAP_SUCCESS;
 557 }
 558
 559 static int parsePagedResults (
 560         Connection *conn,
 561         Operation *op,
 562         LDAPControl *ctrl,
 563         const char **text )
 564 {
 565         ber_tag_t tag;
 566         ber_int_t size;
 567         BerElement *ber;
 568         struct berval cookie = { 0, NULL };
 569
 570         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 571                 *text = "paged results control specified multiple times";
 572                 return LDAP_PROTOCOL_ERROR;
 573         }
 574
 575         if ( ctrl->ldctl_value.bv_len == 0 ) {
 576                 *text = "paged results control value is empty (or absent)";
 577                 return LDAP_PROTOCOL_ERROR;
 578         }
 579
 580         /* Parse the control value
 581          *      realSearchControlValue ::= SEQUENCE {
 582          *              size    INTEGER (0..maxInt),
 583          *                              -- requested page size from client
 584          *                              -- result set size estimate from server
 585          *              cookie  OCTET STRING
 586          */
 587         ber = ber_init( &ctrl->ldctl_value );
 588         if( ber == NULL ) {
 589                 *text = "internal error";
 590                 return LDAP_OTHER;
 591         }
 592
 593         tag = ber_scanf( ber, "{im}", &size, &cookie );
 594         (void) ber_free( ber, 1 );
 595
 596         if( tag == LBER_ERROR ) {
 597                 *text = "paged results control could not be decoded";
 598                 return LDAP_PROTOCOL_ERROR;
 599         }
 600
 601         if( size < 0 ) {
 602                 *text = "paged results control size invalid";
 603                 return LDAP_PROTOCOL_ERROR;
 604         }
 605
 606         if( cookie.bv_len ) {
 607                 PagedResultsCookie reqcookie;
 608                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 609                         /* bad cookie */
 610                         *text = "paged results cookie is invalid";
 611                         return LDAP_PROTOCOL_ERROR;
 612                 }
 613
 614                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 615
 616                 if( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 617                         /* bad cookie */
 618                         *text = "paged results cookie is invalid";
 619                         return LDAP_PROTOCOL_ERROR;
 620
 621                 } else if( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 622                         *text = "paged results cookie is invalid or old";
 623                         return LDAP_UNWILLING_TO_PERFORM;
 624                 }
 625         } else {
 626                 /* Initial request.  Initialize state. */
 627                 op->o_pagedresults_state.ps_cookie = 0;
 628                 op->o_pagedresults_state.ps_id = NOID;
 629         }
 630
 631         op->o_pagedresults_size = size;
 632
 633         op->o_pagedresults = ctrl->ldctl_iscritical
 634                 ? SLAP_CRITICAL_CONTROL
 635                 : SLAP_NONCRITICAL_CONTROL;
 636
 637         return LDAP_SUCCESS;
 638 }
 639
 640 int parseValuesReturnFilter (
 641         Connection *conn,
 642         Operation *op,
 643         LDAPControl *ctrl,
 644         const char **text )
 645 {
 646         int             rc;
 647         BerElement      *ber;
 648         struct berval   fstr = { 0, NULL };
 649         const char *err_msg = "";
 650
 651         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
 652                 *text = "valuesReturnFilter control specified multiple times";
 653                 return LDAP_PROTOCOL_ERROR;
 654         }
 655
 656         if ( ctrl->ldctl_value.bv_len == 0 ) {
 657                 *text = "valuesReturnFilter control value is empty (or absent)";
 658                 return LDAP_PROTOCOL_ERROR;
 659         }
 660
 661         ber = ber_init( &(ctrl->ldctl_value) );
 662         if (ber == NULL) {
 663                 *text = "internal error";
 664                 return LDAP_OTHER;
 665         }
 666
 667         rc = get_vrFilter( conn, ber, &(op->vrFilter), &err_msg);
 668
 669         if( rc != LDAP_SUCCESS ) {
 670                 text = &err_msg;
 671                 if( rc == SLAPD_DISCONNECT ) {
 672                         send_ldap_disconnect( conn, op,
 673                                 LDAP_PROTOCOL_ERROR, *text );
 674                 } else {
 675                         send_ldap_result( conn, op, rc,
 676                                 NULL, *text, NULL, NULL );
 677                 }
 678                 if( fstr.bv_val != NULL) free( fstr.bv_val );
 679                 if( op->vrFilter != NULL) vrFilter_free( op->vrFilter );
 680
 681         } else {
 682                 vrFilter2bv( op->vrFilter, &fstr );
 683         }
 684
 685 #ifdef NEW_LOGGING
 686         LDAP_LOG( OPERATION, ARGS,
 687                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
 688                 conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 689 #else
 690         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
 691                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
 692 #endif
 693
 694         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
 695                 ? SLAP_CRITICAL_CONTROL
 696                 : SLAP_NONCRITICAL_CONTROL;
 697
 698         return LDAP_SUCCESS;
 699 }
 700
 701 #ifdef LDAP_CONTROL_SUBENTRIES
 702 static int parseSubentries (
 703         Connection *conn,
 704         Operation *op,
 705         LDAPControl *ctrl,
 706         const char **text )
 707 {
 708         if ( op->o_subentries != SLAP_NO_CONTROL ) {
 709                 *text = "subentries control specified multiple times";
 710                 return LDAP_PROTOCOL_ERROR;
 711         }
 712
 713         /* FIXME: should use BER library */
 714         if( ( ctrl->ldctl_value.bv_len != 3 )
 715                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
 716                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
 717         {
 718                 *text = "subentries control value encoding is bogus";
 719                 return LDAP_PROTOCOL_ERROR;
 720         }
 721
 722         op->o_subentries = ctrl->ldctl_iscritical
 723                 ? SLAP_CRITICAL_CONTROL
 724                 : SLAP_NONCRITICAL_CONTROL;
 725
 726         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
 727
 728         return LDAP_SUCCESS;
 729 }
 730 #endif
 731
 732 #ifdef LDAP_CLIENT_UPDATE
 733 static int parseClientUpdate (
 734         Connection *conn,
 735         Operation *op,
 736         LDAPControl *ctrl,
 737         const char **text )
 738 {
 739         ber_tag_t tag;
 740         BerElement *ber;
 741         ber_int_t type;
 742         ber_int_t interval;
 743         ber_len_t len;
 744         struct berval scheme = { 0, NULL };
 745         struct berval cookie = { 0, NULL };
 746
 747         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
 748                 *text = "LCUP client update control specified multiple times";
 749                 return LDAP_PROTOCOL_ERROR;
 750         }
 751
 752         if ( ctrl->ldctl_value.bv_len == 0 ) {
 753                 *text = "LCUP client update control value is empty (or absent)";
 754                 return LDAP_PROTOCOL_ERROR;
 755         }
 756
 757         /* Parse the control value
 758          *      ClientUpdateControlValue ::= SEQUENCE {
 759          *              updateType      ENUMERATED {
 760          *                                      synchronizeOnly {0},
 761          *                                      synchronizeAndPersist {1},
 762          *                                      persistOnly {2} },
 763          *              sendCookieInterval INTEGER OPTIONAL,
 764          *              cookie          LCUPCookie OPTIONAL
 765          *      }
 766          */
 767
 768         ber = ber_init( &ctrl->ldctl_value );
 769         if( ber == NULL ) {
 770                 *text = "internal error";
 771                 return LDAP_OTHER;
 772         }
 773
 774         if ( (tag = ber_scanf( ber, "{i" /*}*/, &type )) == LBER_ERROR ) {
 775                 *text = "LCUP client update control : decoding error";
 776                 return LDAP_PROTOCOL_ERROR;
 777         }
 778
 779         switch( type ) {
 780         case LDAP_CUP_SYNC_ONLY:
 781                 type = SLAP_LCUP_SYNC;
 782                 break;
 783         case LDAP_CUP_SYNC_AND_PERSIST:
 784                 type = SLAP_LCUP_SYNC_AND_PERSIST;
 785                 break;
 786         case LDAP_CUP_PERSIST_ONLY:
 787                 type = SLAP_LCUP_PERSIST;
 788                 break;
 789         default:
 790                 *text = "LCUP client update control : unknown update type";
 791                 return LDAP_PROTOCOL_ERROR;
 792         }
 793
 794         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
 795                 *text = "LCUP client update control : decoding error";
 796                 return LDAP_PROTOCOL_ERROR;
 797         }
 798
 799         if ( tag == LDAP_TAG_INTERVAL ) {
 800                 if ( (tag = ber_scanf( ber, "i", &interval )) == LBER_ERROR ) {
 801                         *text = "LCUP client update control : decoding error";
 802                         return LDAP_PROTOCOL_ERROR;
 803                 }
 804
 805                 if ( interval <= 0 ) {
 806                         /* server chooses interval */
 807                         interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
 808                 }
 809
 810         } else {
 811                 /* server chooses interval */
 812                 interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
 813         }
 814
 815         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
 816                 *text = "LCUP client update control : decoding error";
 817                 return LDAP_PROTOCOL_ERROR;
 818         }
 819
 820         if ( tag == LDAP_TAG_COOKIE ) {
 821                 if ( (tag = ber_scanf( ber, /*{*/ "{mm}}",
 822                                         &scheme, &cookie )) == LBER_ERROR ) {
 823                         *text = "LCUP client update control : decoding error";
 824                         return LDAP_PROTOCOL_ERROR;
 825                 }
 826         }
 827
 828         /* TODO : Cookie Scheme Validation */
 829 #if 0
 830         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
 831                 *text = "Unsupported LCUP cookie scheme";
 832                 return LCUP_UNSUPPORTED_SCHEME;
 833         }
 834
 835         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
 836                 *text = "Invalid LCUP cookie";
 837                 return LCUP_INVALID_COOKIE;
 838         }
 839 #endif
 840
 841         ber_dupbv( &op->o_clientupdate_state, &cookie );
 842
 843         (void) ber_free( ber, 1 );
 844
 845         op->o_clientupdate_type = (char) type;
 846         op->o_clientupdate_interval = interval;
 847
 848         op->o_clientupdate = ctrl->ldctl_iscritical
 849                 ? SLAP_CRITICAL_CONTROL
 850                 : SLAP_NONCRITICAL_CONTROL;
 851
 852         return LDAP_SUCCESS;
 853 }
 854 #endif /* LDAP_CLIENT_UPDATE */