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