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 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  53 static SLAP_CTRL_PARSE_FN parseDomainScope;
  54
  55 #ifdef LDAP_CONTROL_SUBENTRIES
  56 static SLAP_CTRL_PARSE_FN parseSubentries;
  57 #endif
  58 #ifdef LDAP_CLIENT_UPDATE
  59 static SLAP_CTRL_PARSE_FN parseClientUpdate;
  60 #endif
  61 #ifdef LDAP_SYNC
  62 static SLAP_CTRL_PARSE_FN parseLdupSync;
  63 #endif
  64
  65 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  66
  67 static char *proxy_authz_extops[] = {
  68         LDAP_EXOP_MODIFY_PASSWD,
  69         LDAP_EXOP_X_WHO_AM_I,
  70         NULL
  71 };
  72
  73 /*
  74  * all known request control OIDs should be added to this list
  75  */
  76 char *slap_known_controls[] = {
  77         LDAP_CONTROL_MANAGEDSAIT,
  78         LDAP_CONTROL_PROXY_AUTHZ,
  79
  80 #ifdef LDAP_CONTROL_SUBENTRIES
  81         LDAP_CONTROL_SUBENTRIES,
  82 #endif /* LDAP_CONTROL_SUBENTRIES */
  83
  84         LDAP_CONTROL_NOOP,
  85
  86 #ifdef LDAP_CONTROL_DUPENT_REQUEST
  87         LDAP_CONTROL_DUPENT_REQUEST,
  88 #endif /* LDAP_CONTROL_DUPENT_REQUEST */
  89
  90 #ifdef LDAP_CONTROL_PAGEDRESULTS
  91         LDAP_CONTROL_PAGEDRESULTS,
  92 #endif
  93
  94 #ifdef LDAP_CONTROL_SORTREQUEST
  95         LDAP_CONTROL_SORTREQUEST,
  96 #endif /* LDAP_CONTROL_SORTREQUEST */
  97
  98 #ifdef LDAP_CONTROL_VLVREQUEST
  99         LDAP_CONTROL_VLVREQUEST,
 100 #endif /* LDAP_CONTROL_VLVREQUEST */
 101
 102         LDAP_CONTROL_VALUESRETURNFILTER,
 103         NULL
 104 };
 105
 106 static struct slap_control {
 107         char *sc_oid;
 108         slap_mask_t sc_mask;
 109         char **sc_extendedops;
 110         SLAP_CTRL_PARSE_FN *sc_parse;
 111
 112 } supportedControls[] = {
 113         { LDAP_CONTROL_VALUESRETURNFILTER,
 114                 SLAP_CTRL_SEARCH, NULL,
 115                 parseValuesReturnFilter },
 116 #ifdef LDAP_CONTROL_PAGEDRESULTS
 117         { LDAP_CONTROL_PAGEDRESULTS,
 118                 SLAP_CTRL_SEARCH, NULL,
 119                 parsePagedResults },
 120 #endif
 121 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 122         { LDAP_CONTROL_X_DOMAIN_SCOPE,
 123                 SLAP_CTRL_FRONTEND|SLAP_CTRL_SEARCH, NULL,
 124                 parseDomainScope },
 125 #endif
 126 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 127         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
 128                 SLAP_CTRL_MODIFY, NULL,
 129                 parsePermissiveModify },
 130 #endif
 131 #ifdef LDAP_CONTROL_SUBENTRIES
 132         { LDAP_CONTROL_SUBENTRIES,
 133                 SLAP_CTRL_SEARCH, NULL,
 134                 parseSubentries },
 135 #endif
 136         { LDAP_CONTROL_NOOP,
 137                 SLAP_CTRL_ACCESS, NULL,
 138                 parseNoOp },
 139 #ifdef LDAP_CLIENT_UPDATE
 140         { LDAP_CONTROL_CLIENT_UPDATE,
 141                 SLAP_CTRL_SEARCH, NULL,
 142                 parseClientUpdate },
 143 #endif
 144 #ifdef LDAP_SYNC
 145         { LDAP_CONTROL_SYNC,
 146                 SLAP_CTRL_SEARCH, NULL,
 147                 parseLdupSync },
 148 #endif
 149         { LDAP_CONTROL_MANAGEDSAIT,
 150                 SLAP_CTRL_ACCESS, NULL,
 151                 parseManageDSAit },
 152         { LDAP_CONTROL_PROXY_AUTHZ,
 153                 SLAP_CTRL_FRONTEND|SLAP_CTRL_ACCESS, proxy_authz_extops,
 154                 parseProxyAuthz },
 155         { NULL, 0, NULL, 0 }
 156 };
 157
 158 char *
 159 get_supported_ctrl(int index)
 160 {
 161         return supportedControls[index].sc_oid;
 162 }
 163
 164 slap_mask_t
 165 get_supported_ctrl_mask(int index)
 166 {
 167         return supportedControls[index].sc_mask;
 168 }
 169
 170 static struct slap_control *
 171 find_ctrl( const char *oid )
 172 {
 173         int i;
 174         for( i=0; supportedControls[i].sc_oid; i++ ) {
 175                 if( strcmp( oid, supportedControls[i].sc_oid ) == 0 ) {
 176                         return &supportedControls[i];
 177                 }
 178         }
 179         return NULL;
 180 }
 181
 182 int get_ctrls(
 183         Connection *conn,
 184         Operation *op,
 185         int sendres )
 186 {
 187         int nctrls = 0;
 188         ber_tag_t tag;
 189         ber_len_t len;
 190         char *opaque;
 191         BerElement *ber = op->o_ber;
 192         struct slap_control *sc;
 193         int rc = LDAP_SUCCESS;
 194         const char *errmsg = NULL;
 195
 196         len = ber_pvt_ber_remaining(ber);
 197
 198         if( len == 0) {
 199                 /* no controls */
 200                 rc = LDAP_SUCCESS;
 201                 return rc;
 202         }
 203
 204         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 205                 if( tag == LBER_ERROR ) {
 206                         rc = SLAPD_DISCONNECT;
 207                         errmsg = "unexpected data in PDU";
 208                 }
 209
 210                 goto return_results;
 211         }
 212
 213 #ifdef NEW_LOGGING
 214         LDAP_LOG( OPERATION, ENTRY,
 215                 "get_ctrls: conn %lu\n", conn->c_connid, 0, 0 );
 216 #else
 217         Debug( LDAP_DEBUG_TRACE,
 218                 "=> get_ctrls\n", 0, 0, 0 );
 219 #endif
 220
 221         if( op->o_protocol < LDAP_VERSION3 ) {
 222                 rc = SLAPD_DISCONNECT;
 223                 errmsg = "controls require LDAPv3";
 224                 goto return_results;
 225         }
 226
 227         /* one for first control, one for termination */
 228         op->o_ctrls = ch_malloc( 2 * sizeof(LDAPControl *) );
 229
 230 #if 0
 231         if( op->ctrls == NULL ) {
 232                 rc = LDAP_NO_MEMORY;
 233                 errmsg = "no memory";
 234                 goto return_results;
 235         }
 236 #endif
 237
 238         op->o_ctrls[nctrls] = NULL;
 239
 240         /* step through each element */
 241         for( tag = ber_first_element( ber, &len, &opaque );
 242                 tag != LBER_ERROR;
 243                 tag = ber_next_element( ber, &len, opaque ) )
 244         {
 245                 LDAPControl *c;
 246                 LDAPControl **tctrls;
 247
 248                 c = ch_calloc( 1, sizeof(LDAPControl) );
 249
 250 #if 0
 251                 if( c == NULL ) {
 252                         ldap_controls_free(op->o_ctrls);
 253                         op->o_ctrls = NULL;
 254
 255                         rc = LDAP_NO_MEMORY;
 256                         errmsg = "no memory";
 257                         goto return_results;
 258                 }
 259 #endif
 260
 261                 /* allocate pointer space for current controls (nctrls)
 262                  * + this control + extra NULL
 263                  */
 264                 tctrls = ch_realloc( op->o_ctrls,
 265                         (nctrls+2) * sizeof(LDAPControl *));
 266
 267 #if 0
 268                 if( tctrls == NULL ) {
 269                         ch_free( c );
 270                         ldap_controls_free(op->o_ctrls);
 271                         op->o_ctrls = NULL;
 272
 273                         rc = LDAP_NO_MEMORY;
 274                         errmsg = "no memory";
 275                         goto return_results;
 276                 }
 277 #endif
 278                 op->o_ctrls = tctrls;
 279
 280                 op->o_ctrls[nctrls++] = c;
 281                 op->o_ctrls[nctrls] = NULL;
 282
 283                 tag = ber_scanf( ber, "{a" /*}*/, &c->ldctl_oid );
 284
 285                 if( tag == LBER_ERROR ) {
 286 #ifdef NEW_LOGGING
 287                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 288                                 conn->c_connid, 0, 0 );
 289 #else
 290                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 291                                 0, 0, 0 );
 292 #endif
 293
 294                         ldap_controls_free( op->o_ctrls );
 295                         op->o_ctrls = NULL;
 296                         rc = SLAPD_DISCONNECT;
 297                         errmsg = "decoding controls error";
 298                         goto return_results;
 299
 300                 } else if( c->ldctl_oid == NULL ) {
 301 #ifdef NEW_LOGGING
 302                         LDAP_LOG( OPERATION, INFO,
 303                                 "get_ctrls: conn %lu got emtpy OID.\n",
 304                                 conn->c_connid, 0, 0 );
 305 #else
 306                         Debug( LDAP_DEBUG_TRACE,
 307                                 "get_ctrls: conn %lu got emtpy OID.\n",
 308                                 conn->c_connid, 0, 0 );
 309 #endif
 310
 311                         ldap_controls_free( op->o_ctrls );
 312                         op->o_ctrls = NULL;
 313                         rc = LDAP_PROTOCOL_ERROR;
 314                         errmsg = "OID field is empty";
 315                         goto return_results;
 316                 }
 317
 318                 tag = ber_peek_tag( ber, &len );
 319
 320                 if( tag == LBER_BOOLEAN ) {
 321                         ber_int_t crit;
 322                         tag = ber_scanf( ber, "b", &crit );
 323
 324                         if( tag == LBER_ERROR ) {
 325 #ifdef NEW_LOGGING
 326                                 LDAP_LOG( OPERATION, INFO,
 327                                         "get_ctrls: conn %lu get crit failed.\n",
 328                                         conn->c_connid, 0, 0 );
 329 #else
 330                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 331                                         0, 0, 0 );
 332 #endif
 333                                 ldap_controls_free( op->o_ctrls );
 334                                 op->o_ctrls = NULL;
 335                                 rc = SLAPD_DISCONNECT;
 336                                 errmsg = "decoding controls error";
 337                                 goto return_results;
 338                         }
 339
 340                         c->ldctl_iscritical = (crit != 0);
 341                         tag = ber_peek_tag( ber, &len );
 342                 }
 343
 344                 if( tag == LBER_OCTETSTRING ) {
 345                         tag = ber_scanf( ber, "o", &c->ldctl_value );
 346
 347                         if( tag == LBER_ERROR ) {
 348 #ifdef NEW_LOGGING
 349                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 350                                         "%s (%scritical): get value failed.\n",
 351                                         conn->c_connid, c->ldctl_oid,
 352                                         c->ldctl_iscritical ? "" : "non" );
 353 #else
 354                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 355                                         "%s (%scritical): get value failed.\n",
 356                                         conn->c_connid, c->ldctl_oid,
 357                                         c->ldctl_iscritical ? "" : "non" );
 358 #endif
 359                                 ldap_controls_free( op->o_ctrls );
 360                                 op->o_ctrls = NULL;
 361                                 rc = SLAPD_DISCONNECT;
 362                                 errmsg = "decoding controls error";
 363                                 goto return_results;
 364                         }
 365                 }
 366
 367 #ifdef NEW_LOGGING
 368                 LDAP_LOG( OPERATION, INFO,
 369                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 370                         conn->c_connid, c->ldctl_oid, c->ldctl_iscritical ? "" : "non" );
 371 #else
 372                 Debug( LDAP_DEBUG_TRACE,
 373                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 374                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 375 #endif
 376
 377                 sc = find_ctrl( c->ldctl_oid );
 378                 if( sc != NULL ) {
 379                         /* recognized control */
 380                         slap_mask_t tagmask;
 381                         switch( op->o_tag ) {
 382                         case LDAP_REQ_ADD:
 383                                 tagmask = SLAP_CTRL_ADD;
 384                                 break;
 385                         case LDAP_REQ_BIND:
 386                                 tagmask = SLAP_CTRL_BIND;
 387                                 break;
 388                         case LDAP_REQ_COMPARE:
 389                                 tagmask = SLAP_CTRL_COMPARE;
 390                                 break;
 391                         case LDAP_REQ_DELETE:
 392                                 tagmask = SLAP_CTRL_DELETE;
 393                                 break;
 394                         case LDAP_REQ_MODIFY:
 395                                 tagmask = SLAP_CTRL_MODIFY;
 396                                 break;
 397                         case LDAP_REQ_RENAME:
 398                                 tagmask = SLAP_CTRL_RENAME;
 399                                 break;
 400                         case LDAP_REQ_SEARCH:
 401                                 tagmask = SLAP_CTRL_SEARCH;
 402                                 break;
 403                         case LDAP_REQ_UNBIND:
 404                                 tagmask = SLAP_CTRL_UNBIND;
 405                                 break;
 406                         case LDAP_REQ_ABANDON:
 407                                 tagmask = SLAP_CTRL_ABANDON;
 408                                 break;
 409                         case LDAP_REQ_EXTENDED:
 410                                 tagmask=~0L;
 411                                 assert( op->o_extendedop != NULL );
 412                                 if( sc->sc_extendedops != NULL ) {
 413                                         int i;
 414                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 415                                                 if( strcmp( op->o_extendedop, sc->sc_extendedops[i] )
 416                                                         == 0 )
 417                                                 {
 418                                                         tagmask=0L;
 419                                                         break;
 420                                                 }
 421                                         }
 422                                 }
 423                                 break;
 424                         default:
 425                                 rc = LDAP_OTHER;
 426                                 errmsg = "controls internal error";
 427                                 goto return_results;
 428                         }
 429
 430                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 431                                 /* available extension */
 432
 433                                 if( !sc->sc_parse ) {
 434                                         rc = LDAP_OTHER;
 435                                         errmsg = "not yet implemented";
 436                                         goto return_results;
 437                                 }
 438
 439                                 rc = sc->sc_parse( conn, op, c, &errmsg );
 440
 441                                 if( rc != LDAP_SUCCESS ) goto return_results;
 442
 443                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 444                                         /* kludge to disable backend_control() check */
 445                                         c->ldctl_iscritical = 0;
 446
 447                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 448                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 449                                 {
 450                                         /* kludge to disable backend_control() check */
 451                                         c->ldctl_iscritical = 0;
 452                                 }
 453
 454                         } else if( c->ldctl_iscritical ) {
 455                                 /* unavailable CRITICAL control */
 456                                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 457                                 errmsg = "critical extension is unavailable";
 458                                 goto return_results;
 459                         }
 460
 461                 } else if( c->ldctl_iscritical ) {
 462                         /* unrecognized CRITICAL control */
 463                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 464                         errmsg = "critical extension is not recognized";
 465                         goto return_results;
 466                 }
 467         }
 468
 469 return_results:
 470 #ifdef NEW_LOGGING
 471         LDAP_LOG( OPERATION, RESULTS,
 472                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 473                 nctrls, rc, errmsg ? errmsg : "" );
 474 #else
 475         Debug( LDAP_DEBUG_TRACE,
 476                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 477                 nctrls, rc, errmsg ? errmsg : "");
 478 #endif
 479
 480         if( sendres && rc != LDAP_SUCCESS ) {
 481                 if( rc == SLAPD_DISCONNECT ) {
 482                         send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, errmsg );
 483                 } else {
 484                         send_ldap_result( conn, op, rc,
 485                                 NULL, errmsg, NULL, NULL );
 486                 }
 487         }
 488
 489         return rc;
 490 }
 491
 492 static int parseManageDSAit (
 493         Connection *conn,
 494         Operation *op,
 495         LDAPControl *ctrl,
 496         const char **text )
 497 {
 498         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 499                 *text = "manageDSAit control specified multiple times";
 500                 return LDAP_PROTOCOL_ERROR;
 501         }
 502
 503         if ( ctrl->ldctl_value.bv_len ) {
 504                 *text = "manageDSAit control value not empty";
 505                 return LDAP_PROTOCOL_ERROR;
 506         }
 507
 508         op->o_managedsait = ctrl->ldctl_iscritical
 509                 ? SLAP_CRITICAL_CONTROL
 510                 : SLAP_NONCRITICAL_CONTROL;
 511
 512         return LDAP_SUCCESS;
 513 }
 514
 515 static int parseProxyAuthz (
 516         Connection *conn,
 517         Operation *op,
 518         LDAPControl *ctrl,
 519         const char **text )
 520 {
 521         int rc;
 522         struct berval dn = { 0, NULL };
 523
 524         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 525                 *text = "proxy authorization control specified multiple times";
 526                 return LDAP_PROTOCOL_ERROR;
 527         }
 528
 529         op->o_proxy_authz = ctrl->ldctl_iscritical
 530                 ? SLAP_CRITICAL_CONTROL
 531                 : SLAP_NONCRITICAL_CONTROL;
 532
 533 #ifdef NEW_LOGGING
 534         LDAP_LOG( OPERATION, ARGS,
 535                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 536                 conn->c_connid,
 537                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 538                 0 );
 539 #else
 540         Debug( LDAP_DEBUG_ARGS,
 541                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 542                 conn->c_connid,
 543                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 544                 0 );
 545 #endif
 546
 547         if( ctrl->ldctl_value.bv_len == 0 ) {
 548 #ifdef NEW_LOGGING
 549                 LDAP_LOG( OPERATION, RESULTS,
 550                         "parseProxyAuthz: conn=%lu anonymous\n",
 551                         conn->c_connid, 0, 0 );
 552 #else
 553                 Debug( LDAP_DEBUG_TRACE,
 554                         "parseProxyAuthz: conn=%lu anonymous\n",
 555                         conn->c_connid, 0, 0 );
 556 #endif
 557
 558                 /* anonymous */
 559                 free( op->o_dn.bv_val );
 560                 op->o_dn.bv_len = 0;
 561                 op->o_dn.bv_val = ch_strdup( "" );
 562
 563                 free( op->o_ndn.bv_val );
 564                 op->o_ndn.bv_len = 0;
 565                 op->o_ndn.bv_val = ch_strdup( "" );
 566
 567                 return LDAP_SUCCESS;
 568         }
 569
 570         rc = slap_sasl_getdn( conn,
 571                 ctrl->ldctl_value.bv_val, ctrl->ldctl_value.bv_len,
 572                 NULL, &dn, SLAP_GETDN_AUTHZID );
 573
 574         if( rc != LDAP_SUCCESS || !dn.bv_len ) {
 575                 if ( dn.bv_val ) {
 576                         ch_free( dn.bv_val );
 577                 }
 578                 *text = "authzId mapping failed";
 579                 return LDAP_PROXY_AUTHZ_FAILURE;
 580         }
 581
 582 #ifdef NEW_LOGGING
 583         LDAP_LOG( OPERATION, RESULTS,
 584                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 585                 conn->c_connid,
 586                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 587 #else
 588         Debug( LDAP_DEBUG_TRACE,
 589                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 590                 conn->c_connid,
 591                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 592 #endif
 593
 594         rc = slap_sasl_authorized( conn, &op->o_ndn, &dn );
 595
 596         if( rc ) {
 597                 ch_free( dn.bv_val );
 598                 *text = "not authorized to assume identity";
 599                 return LDAP_PROXY_AUTHZ_FAILURE;
 600         }
 601
 602         ch_free( op->o_dn.bv_val );
 603         ch_free( op->o_ndn.bv_val );
 604
 605         op->o_dn.bv_val = NULL;
 606         op->o_ndn = dn;
 607
 608         /*
 609          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 610          * from now on op->o_dn is normalized
 611          */
 612         ber_dupbv( &op->o_dn, &dn );
 613
 614         return LDAP_SUCCESS;
 615 }
 616
 617 static int parseNoOp (
 618         Connection *conn,
 619         Operation *op,
 620         LDAPControl *ctrl,
 621         const char **text )
 622 {
 623         if ( op->o_noop != SLAP_NO_CONTROL ) {
 624                 *text = "noop control specified multiple times";
 625                 return LDAP_PROTOCOL_ERROR;
 626         }
 627
 628         if ( ctrl->ldctl_value.bv_len ) {
 629                 *text = "noop control value not empty";
 630                 return LDAP_PROTOCOL_ERROR;
 631         }
 632
 633         op->o_noop = ctrl->ldctl_iscritical
 634                 ? SLAP_CRITICAL_CONTROL
 635                 : SLAP_NONCRITICAL_CONTROL;
 636
 637         return LDAP_SUCCESS;
 638 }
 639
 640 #ifdef LDAP_CONTROL_PAGEDRESULTS
 641 static int parsePagedResults (
 642         Connection *conn,
 643         Operation *op,
 644         LDAPControl *ctrl,
 645         const char **text )
 646 {
 647         ber_tag_t tag;
 648         ber_int_t size;
 649         BerElement *ber;
 650         struct berval cookie = { 0, NULL };
 651
 652         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 653                 *text = "paged results control specified multiple times";
 654                 return LDAP_PROTOCOL_ERROR;
 655         }
 656
 657         if ( ctrl->ldctl_value.bv_len == 0 ) {
 658                 *text = "paged results control value is empty (or absent)";
 659                 return LDAP_PROTOCOL_ERROR;
 660         }
 661
 662         /* Parse the control value
 663          *      realSearchControlValue ::= SEQUENCE {
 664          *              size    INTEGER (0..maxInt),
 665          *                              -- requested page size from client
 666          *                              -- result set size estimate from server
 667          *              cookie  OCTET STRING
 668          * }
 669          */
 670         ber = ber_init( &ctrl->ldctl_value );
 671         if( ber == NULL ) {
 672                 *text = "internal error";
 673                 return LDAP_OTHER;
 674         }
 675
 676         tag = ber_scanf( ber, "{im}", &size, &cookie );
 677         (void) ber_free( ber, 1 );
 678
 679         if( tag == LBER_ERROR ) {
 680                 *text = "paged results control could not be decoded";
 681                 return LDAP_PROTOCOL_ERROR;
 682         }
 683
 684         if( size < 0 ) {
 685                 *text = "paged results control size invalid";
 686                 return LDAP_PROTOCOL_ERROR;
 687         }
 688
 689         if( cookie.bv_len ) {
 690                 PagedResultsCookie reqcookie;
 691                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 692                         /* bad cookie */
 693                         *text = "paged results cookie is invalid";
 694                         return LDAP_PROTOCOL_ERROR;
 695                 }
 696
 697                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 698
 699                 if( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 700                         /* bad cookie */
 701                         *text = "paged results cookie is invalid";
 702                         return LDAP_PROTOCOL_ERROR;
 703
 704                 } else if( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 705                         *text = "paged results cookie is invalid or old";
 706                         return LDAP_UNWILLING_TO_PERFORM;
 707                 }
 708         } else {
 709                 /* Initial request.  Initialize state. */
 710                 op->o_pagedresults_state.ps_cookie = 0;
 711                 op->o_pagedresults_state.ps_id = NOID;
 712         }
 713
 714         op->o_pagedresults_size = size;
 715
 716         op->o_pagedresults = ctrl->ldctl_iscritical
 717                 ? SLAP_CRITICAL_CONTROL
 718                 : SLAP_NONCRITICAL_CONTROL;
 719
 720         return LDAP_SUCCESS;
 721 }
 722 #endif
 723
 724 int parseValuesReturnFilter (
 725         Connection *conn,
 726         Operation *op,
 727         LDAPControl *ctrl,
 728         const char **text )
 729 {
 730         int             rc;
 731         BerElement      *ber;
 732         struct berval   fstr = { 0, NULL };
 733         const char *err_msg = "";
 734
 735         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
 736                 *text = "valuesReturnFilter control specified multiple times";
 737                 return LDAP_PROTOCOL_ERROR;
 738         }
 739
 740         if ( ctrl->ldctl_value.bv_len == 0 ) {
 741                 *text = "valuesReturnFilter control value is empty (or absent)";
 742                 return LDAP_PROTOCOL_ERROR;
 743         }
 744
 745         ber = ber_init( &(ctrl->ldctl_value) );
 746         if (ber == NULL) {
 747                 *text = "internal error";
 748                 return LDAP_OTHER;
 749         }
 750
 751         rc = get_vrFilter( conn, ber, &(op->vrFilter), &err_msg);
 752
 753         if( rc != LDAP_SUCCESS ) {
 754                 text = &err_msg;
 755                 if( rc == SLAPD_DISCONNECT ) {
 756                         send_ldap_disconnect( conn, op,
 757                                 LDAP_PROTOCOL_ERROR, *text );
 758                 } else {
 759                         send_ldap_result( conn, op, rc,
 760                                 NULL, *text, NULL, NULL );
 761                 }
 762                 if( fstr.bv_val != NULL) free( fstr.bv_val );
 763                 if( op->vrFilter != NULL) vrFilter_free( op->vrFilter );
 764
 765         } else {
 766                 vrFilter2bv( op->vrFilter, &fstr );
 767         }
 768
 769 #ifdef NEW_LOGGING
 770         LDAP_LOG( OPERATION, ARGS,
 771                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
 772                 conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 773 #else
 774         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
 775                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
 776 #endif
 777
 778         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
 779                 ? SLAP_CRITICAL_CONTROL
 780                 : SLAP_NONCRITICAL_CONTROL;
 781
 782         return LDAP_SUCCESS;
 783 }
 784
 785 #ifdef LDAP_CONTROL_SUBENTRIES
 786 static int parseSubentries (
 787         Connection *conn,
 788         Operation *op,
 789         LDAPControl *ctrl,
 790         const char **text )
 791 {
 792         if ( op->o_subentries != SLAP_NO_CONTROL ) {
 793                 *text = "subentries control specified multiple times";
 794                 return LDAP_PROTOCOL_ERROR;
 795         }
 796
 797         /* FIXME: should use BER library */
 798         if( ( ctrl->ldctl_value.bv_len != 3 )
 799                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
 800                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
 801         {
 802                 *text = "subentries control value encoding is bogus";
 803                 return LDAP_PROTOCOL_ERROR;
 804         }
 805
 806         op->o_subentries = ctrl->ldctl_iscritical
 807                 ? SLAP_CRITICAL_CONTROL
 808                 : SLAP_NONCRITICAL_CONTROL;
 809
 810         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
 811
 812         return LDAP_SUCCESS;
 813 }
 814 #endif
 815
 816 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 817 static int parsePermissiveModify (
 818         Connection *conn,
 819         Operation *op,
 820         LDAPControl *ctrl,
 821         const char **text )
 822 {
 823         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
 824                 *text = "permissiveModify control specified multiple times";
 825                 return LDAP_PROTOCOL_ERROR;
 826         }
 827
 828         if ( ctrl->ldctl_value.bv_len ) {
 829                 *text = "permissiveModify control value not empty";
 830                 return LDAP_PROTOCOL_ERROR;
 831         }
 832
 833         op->o_permissive_modify = ctrl->ldctl_iscritical
 834                 ? SLAP_CRITICAL_CONTROL
 835                 : SLAP_NONCRITICAL_CONTROL;
 836
 837         return LDAP_SUCCESS;
 838 }
 839 #endif
 840
 841 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 842 static int parseDomainScope (
 843         Connection *conn,
 844         Operation *op,
 845         LDAPControl *ctrl,
 846         const char **text )
 847 {
 848         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
 849                 *text = "domainScope control specified multiple times";
 850                 return LDAP_PROTOCOL_ERROR;
 851         }
 852
 853         if ( ctrl->ldctl_value.bv_len ) {
 854                 *text = "domainScope control value not empty";
 855                 return LDAP_PROTOCOL_ERROR;
 856         }
 857
 858         op->o_domain_scope = ctrl->ldctl_iscritical
 859                 ? SLAP_CRITICAL_CONTROL
 860                 : SLAP_NONCRITICAL_CONTROL;
 861
 862         return LDAP_SUCCESS;
 863 }
 864 #endif
 865
 866 #ifdef LDAP_CLIENT_UPDATE
 867 static int parseClientUpdate (
 868         Connection *conn,
 869         Operation *op,
 870         LDAPControl *ctrl,
 871         const char **text )
 872 {
 873         ber_tag_t tag;
 874         BerElement *ber;
 875         ber_int_t type;
 876         ber_int_t interval;
 877         ber_len_t len;
 878         struct berval scheme = { 0, NULL };
 879         struct berval cookie = { 0, NULL };
 880
 881         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
 882                 *text = "LCUP client update control specified multiple times";
 883                 return LDAP_PROTOCOL_ERROR;
 884         }
 885
 886 #ifdef LDAP_SYNC
 887         if ( op->o_sync != SLAP_NO_CONTROL ) {
 888                 *text = "LDAP Client Update and Sync controls used together";
 889                 return LDAP_PROTOCOL_ERROR;
 890         }
 891 #endif
 892
 893         if ( ctrl->ldctl_value.bv_len == 0 ) {
 894                 *text = "LCUP client update control value is empty (or absent)";
 895                 return LDAP_PROTOCOL_ERROR;
 896         }
 897
 898         /* Parse the control value
 899          *      ClientUpdateControlValue ::= SEQUENCE {
 900          *              updateType      ENUMERATED {
 901          *                                      synchronizeOnly {0},
 902          *                                      synchronizeAndPersist {1},
 903          *                                      persistOnly {2} },
 904          *              sendCookieInterval INTEGER OPTIONAL,
 905          *              cookie          LCUPCookie OPTIONAL
 906          *      }
 907          */
 908
 909         ber = ber_init( &ctrl->ldctl_value );
 910         if( ber == NULL ) {
 911                 *text = "internal error";
 912                 return LDAP_OTHER;
 913         }
 914
 915         if ( (tag = ber_scanf( ber, "{i" /*}*/, &type )) == LBER_ERROR ) {
 916                 *text = "LCUP client update control : decoding error";
 917                 return LDAP_PROTOCOL_ERROR;
 918         }
 919
 920         switch( type ) {
 921         case LDAP_CUP_SYNC_ONLY:
 922                 type = SLAP_LCUP_SYNC;
 923                 break;
 924         case LDAP_CUP_SYNC_AND_PERSIST:
 925                 type = SLAP_LCUP_SYNC_AND_PERSIST;
 926                 break;
 927         case LDAP_CUP_PERSIST_ONLY:
 928                 type = SLAP_LCUP_PERSIST;
 929                 break;
 930         default:
 931                 *text = "LCUP client update control : unknown update type";
 932                 return LDAP_PROTOCOL_ERROR;
 933         }
 934
 935         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
 936                 *text = "LCUP client update control : decoding error";
 937                 return LDAP_PROTOCOL_ERROR;
 938         }
 939
 940         if ( tag == LDAP_CUP_TAG_INTERVAL ) {
 941                 if ( (tag = ber_scanf( ber, "i", &interval )) == LBER_ERROR ) {
 942                         *text = "LCUP client update control : decoding error";
 943                         return LDAP_PROTOCOL_ERROR;
 944                 }
 945
 946                 if ( interval <= 0 ) {
 947                         /* server chooses interval */
 948                         interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
 949                 }
 950
 951         } else {
 952                 /* server chooses interval */
 953                 interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
 954         }
 955
 956         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
 957                 *text = "LCUP client update control : decoding error";
 958                 return LDAP_PROTOCOL_ERROR;
 959         }
 960
 961         if ( tag == LDAP_CUP_TAG_COOKIE ) {
 962                 if ( (tag = ber_scanf( ber, /*{*/ "{mm}}",
 963                         &scheme, &cookie )) == LBER_ERROR )
 964                 {
 965                         *text = "LCUP client update control : decoding error";
 966                         return LDAP_PROTOCOL_ERROR;
 967                 }
 968         }
 969
 970         /* TODO : Cookie Scheme Validation */
 971 #if 0
 972         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
 973                 *text = "Unsupported LCUP cookie scheme";
 974                 return LCUP_UNSUPPORTED_SCHEME;
 975         }
 976
 977         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
 978                 *text = "Invalid LCUP cookie";
 979                 return LCUP_INVALID_COOKIE;
 980         }
 981 #endif
 982
 983         ber_dupbv( &op->o_clientupdate_state, &cookie );
 984
 985         (void) ber_free( ber, 1 );
 986
 987         op->o_clientupdate_type = (char) type;
 988         op->o_clientupdate_interval = interval;
 989
 990         op->o_clientupdate = ctrl->ldctl_iscritical
 991                 ? SLAP_CRITICAL_CONTROL
 992                 : SLAP_NONCRITICAL_CONTROL;
 993
 994         return LDAP_SUCCESS;
 995 }
 996 #endif
 997
 998 #ifdef LDAP_SYNC
 999 static int parseLdupSync (
1000         Connection *conn,
1001         Operation *op,
1002         LDAPControl *ctrl,
1003         const char **text )
1004 {
1005         ber_tag_t tag;
1006         BerElement *ber;
1007         ber_int_t mode;
1008         ber_len_t len;
1009         struct berval cookie = { 0, NULL };
1010
1011         if ( op->o_sync != SLAP_NO_CONTROL ) {
1012                 *text = "LDAP Sync control specified multiple times";
1013                 return LDAP_PROTOCOL_ERROR;
1014         }
1015
1016 #ifdef LDAP_CLIENT_UPDATE
1017         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
1018                 *text = "LDAP Sync and LDAP Client Update controls used together";
1019                 return LDAP_PROTOCOL_ERROR;
1020         }
1021 #endif
1022
1023         if ( ctrl->ldctl_value.bv_len == 0 ) {
1024                 *text = "LDAP Sync control value is empty (or absent)";
1025                 return LDAP_PROTOCOL_ERROR;
1026         }
1027
1028         /* Parse the control value
1029          *      syncRequestValue ::= SEQUENCE {
1030          *              mode   ENUMERATED {
1031          *                      -- 0 unused
1032          *                      refreshOnly             (1),
1033          *                      -- 2 reserved
1034          *                      refreshAndPersist       (3)
1035          *              },
1036          *              cookie  syncCookie OPTIONAL
1037          *      }
1038          */
1039
1040         ber = ber_init( &ctrl->ldctl_value );
1041         if( ber == NULL ) {
1042                 *text = "internal error";
1043                 return LDAP_OTHER;
1044         }
1045
1046         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1047                 *text = "LDAP Sync control : mode decoding error";
1048                 return LDAP_PROTOCOL_ERROR;
1049         }
1050
1051         switch( mode ) {
1052         case LDAP_SYNC_REFRESH_ONLY:
1053                 mode = SLAP_SYNC_REFRESH;
1054                 break;
1055         case LDAP_SYNC_REFRESH_AND_PERSIST:
1056                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1057                 break;
1058         default:
1059                 *text = "LDAP Sync control : unknown update mode";
1060                 return LDAP_PROTOCOL_ERROR;
1061         }
1062
1063         tag = ber_peek_tag( ber, &len );
1064
1065         if ( tag == LDAP_SYNC_TAG_COOKIE ) {
1066                 if (( ber_scanf( ber, /*{*/ "m}",
1067                                         &cookie )) == LBER_ERROR ) {
1068                         *text = "LDAP Sync control : cookie decoding error";
1069                         return LDAP_PROTOCOL_ERROR;
1070                 }
1071         } else {
1072                 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1073                         *text = "LDAP Sync control : decoding error";
1074                         return LDAP_PROTOCOL_ERROR;
1075                 }
1076                 cookie.bv_len = 0;
1077                 cookie.bv_val = NULL;
1078         }
1079
1080         /* TODO : Cookie Scheme Validation */
1081 #if 0
1082         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
1083                 *text = "Unsupported LCUP cookie scheme";
1084                 return LCUP_UNSUPPORTED_SCHEME;
1085         }
1086
1087         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
1088                 *text = "Invalid LCUP cookie";
1089                 return LCUP_INVALID_COOKIE;
1090         }
1091 #endif
1092
1093         ber_dupbv( &op->o_sync_state, &cookie );
1094
1095         (void) ber_free( ber, 1 );
1096
1097         op->o_sync_mode = (char) mode;
1098
1099         op->o_sync = ctrl->ldctl_iscritical
1100                 ? SLAP_CRITICAL_CONTROL
1101                 : SLAP_NONCRITICAL_CONTROL;
1102
1103         return LDAP_SUCCESS;
1104 }
1105 #endif