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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10 #include <ac/stdlib.h>
  11 #include <ac/string.h>
  12
  13 #include <lber.h>
  14 #include <ldap_log.h>
  15
  16 #include "slap.h"
  17
  18 #ifdef HAVE_CYRUS_SASL
  19 #include <limits.h>
  20 #include <sasl.h>
  21
  22 #include <ldap_pvt.h>
  23
  24 #ifdef SLAPD_SPASSWD
  25 #include <lutil.h>
  26 #endif
  27
  28 /* Flags for telling slap_sasl_getdn() what type of identity is being passed */
  29 #define FLAG_GETDN_FINAL   1
  30 #define FLAG_GETDN_AUTHCID 2
  31 #define FLAG_GETDN_AUTHZID 4
  32
  33 static sasl_security_properties_t sasl_secprops;
  34
  35 static int
  36 slap_sasl_log(
  37         void *context,
  38         int priority,
  39         const char *message)
  40 {
  41         Connection *conn = context;
  42         int level;
  43         const char * label;
  44
  45         if ( message == NULL ) {
  46                 return SASL_BADPARAM;
  47         }
  48
  49         switch (priority) {
  50         case SASL_LOG_ERR:
  51                 level = LDAP_DEBUG_ANY;
  52                 label = "Error";
  53                 break;
  54         case SASL_LOG_WARNING:
  55                 level = LDAP_DEBUG_TRACE;
  56                 label = "Warning";
  57                 break;
  58         case SASL_LOG_INFO:
  59                 level = LDAP_DEBUG_TRACE;
  60                 label = "Info";
  61                 break;
  62         default:
  63                 return SASL_BADPARAM;
  64         }
  65
  66 #ifdef NEW_LOGGING
  67         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
  68                 "SASL [conn=%ld] %s: %s\n",
  69                 conn ? conn->c_connid : -1,
  70                 label, message ));
  71 #else
  72         Debug( level, "SASL [conn=%ld] %s: %s\n",
  73                 conn ? conn->c_connid: -1,
  74                 label, message );
  75 #endif
  76
  77
  78         return SASL_OK;
  79 }
  80
  81
  82 /* Take any sort of identity string and return a DN with the "dn:" prefix. The
  83    string returned in *dnptr is in its own allocated memory, and must be free'd
  84    by the calling process.
  85    -Mark Adamson, Carnegie Mellon
  86 */
  87
  88 int slap_sasl_getdn( Connection *conn, char *id, char **dnptr, int flags )
  89 {
  90         char *c=NULL, *c1, *dn=NULL;
  91         int rc, len;
  92         sasl_conn_t *ctx;
  93
  94
  95 #ifdef NEW_LOGGING
  96         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
  97                 "slap_sasl_getdn: conn %d id=%s\n",
  98                 conn ? conn->c_connid : -1,
  99                 id ? (*id ? id : "<empty>") : "NULL" ));
 100 #else
 101         Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s\n",
 102       id?(*id?id:"<empty>"):"NULL",0,0 );
 103 #endif
 104
 105
 106         /* Blatantly anonymous ID */
 107         if( id &&
 108                 ( id[sizeof( "anonymous" )-1] == '\0'
 109                         || id[sizeof( "anonymous" )-1] == '@' ) &&
 110                 !strncasecmp( id, "anonymous", sizeof( "anonymous" )-1) ) {
 111                 *dnptr = NULL;
 112                 return( LDAP_SUCCESS );
 113         }
 114         ctx = conn->c_sasl_context;
 115         len = strlen( id );
 116
 117         /* An authcID needs to be converted to authzID form */
 118         if( flags & FLAG_GETDN_AUTHCID ) {
 119                 if( sasl_external_x509dn_convert && conn->c_sasl_bind_mech
 120                         && ( strcasecmp( "EXTERNAL", conn->c_sasl_bind_mech ) == 0 )
 121                         && len && id[0] == '/' /* && id[len-1]== '/' */)
 122                 {
 123                         /* check SASL external for X.509 style DN and */
 124                         /* convert to dn:<dn> form */
 125                         char *tmpdn = ldap_dcedn2dn( id );
 126                         len = strlen( tmpdn );
 127
 128                         dn = ch_malloc( len+4 );
 129                         dn[0] = 'd';
 130                         dn[1] = 'n';
 131                         dn[2] = ':';
 132                         AC_MEMCPY( &dn[3], tmpdn, len+1 );
 133                         len += 3;
 134
 135                 } else {
 136                         /* convert to u:<username> form */
 137                         dn = ch_malloc( len+3 );
 138                         dn[0] = 'u';
 139                         dn[1] = ':';
 140                         AC_MEMCPY( &dn[2], id, len+1 );
 141                         len += 2;
 142                 }
 143         } else {
 144                 dn = ch_strdup( id );
 145         }
 146
 147         /* An authzID must be properly prefixed */
 148         if( flags & FLAG_GETDN_AUTHZID
 149                 && strncasecmp( dn, "u:", sizeof("u:")-1 )
 150                 && strncasecmp( dn, "dn:", sizeof("dn:")-1 ) )
 151         {
 152                 ch_free( dn );
 153                 *dnptr = NULL;
 154                 return( LDAP_INAPPROPRIATE_AUTH );
 155         }
 156
 157         /* Username strings */
 158         if( !strncasecmp( dn, "u:", sizeof("u:")-1 ) ) {
 159                 len += (sizeof("dn:uid=")-1) + (sizeof(",cn=auth")-1);
 160
 161                 /* Figure out how much data we have for the dn */
 162                 rc = sasl_getprop( ctx, SASL_REALM, (void **)&c );
 163                 if( rc != SASL_OK && rc != SASL_NOTDONE ) {
 164 #ifdef NEW_LOGGING
 165                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 166                                 "slap_sasl_getdn: getprop(REALM) failed.\n" ));
 167 #else
 168                         Debug(LDAP_DEBUG_TRACE,
 169                                 "getdn: getprop(REALM) failed!\n", 0,0,0);
 170 #endif
 171
 172                         ch_free( dn );
 173                         *dnptr = NULL;
 174                         return( LDAP_OPERATIONS_ERROR );
 175                 }
 176
 177                 if( c && *c ) {
 178                         len += strlen( c ) + (sizeof(",cn=")-1);
 179                 }
 180
 181                 if( conn->c_sasl_bind_mech ) {
 182                         len += strlen( conn->c_sasl_bind_mech ) + (sizeof(",cn=")-1);
 183                 }
 184
 185                 /* Build the new dn */
 186                 c1 = dn;
 187                 dn = ch_malloc( len );
 188                 len = sprintf( dn, "dn:uid=%s", c1+2 );
 189                 ch_free( c1 );
 190
 191                 if( c ) {
 192                         len += sprintf( dn+len, ",cn=%s", c );
 193                 }
 194                 if( conn->c_sasl_bind_mech ) {
 195                         len += sprintf( dn+len, ",cn=%s", conn->c_sasl_bind_mech );
 196                 }
 197                 strcpy( dn+len, ",cn=auth" );
 198                 len += (sizeof(",cn=auth")-1);
 199
 200 #ifdef NEW_LOGGING
 201                 LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 202                         "slap_sasl_getdn: u:id converted to %s.\n", dn ));
 203 #else
 204                 Debug( LDAP_DEBUG_TRACE, "getdn: u:id converted to %s\n", dn,0,0 );
 205 #endif
 206         }
 207
 208         /* DN strings that are a cn=auth identity to run through regexp */
 209         if( !strncasecmp( dn, "dn:", sizeof("dn:")-1) &&
 210                 ( ( flags & FLAG_GETDN_FINAL ) == 0 ) )
 211         {
 212                 c1 = slap_sasl2dn( dn + (sizeof("dn:")-1) );
 213                 if( c1 ) {
 214                         ch_free( dn );
 215                         dn = c1;
 216                         /* Reaffix the dn: prefix if it was removed */
 217                         if( strncasecmp( dn, "dn:", sizeof("dn:")-1) ) {
 218                                 c1 = dn;
 219                                 dn = ch_malloc( strlen( c1 ) + sizeof("dn:") );
 220                                 sprintf( dn, "dn:%s", c1 );
 221                                 ch_free( c1 );
 222                         }
 223
 224 #ifdef NEW_LOGGING
 225                         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 226                                 "slap_sasl_getdn: dn:id converted to %s.\n", dn ));
 227 #else
 228                         Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
 229                                 dn, 0, 0 );
 230 #endif
 231                 }
 232         }
 233
 234         if( ( flags & FLAG_GETDN_FINAL ) == 0 )  {
 235                 dn_normalize( dn+(sizeof("dn:")-1) );
 236         }
 237
 238         *dnptr = dn;
 239         return( LDAP_SUCCESS );
 240 }
 241
 242
 243
 244 static int
 245 slap_sasl_authorize(
 246         void *context,
 247         const char *authcid,
 248         const char *authzid,
 249         const char **user,
 250         const char **errstr)
 251 {
 252         char *authcDN, *authzDN;
 253         int rc;
 254         Connection *conn = context;
 255
 256         *user = NULL;
 257
 258 #ifdef NEW_LOGGING
 259         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 260                    "slap_sas_authorize: conn %d  authcid=\"%s\" authzid=\"%s\"\n",
 261                    conn ? conn->c_connid : -1,
 262                    authcid ? authcid : "<empty>",
 263                    authzid ? authzid : "<empty>" ));
 264 #else
 265         Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
 266                 "authcid=\"%s\" authzid=\"%s\"\n",
 267                 (long) (conn ? conn->c_connid : -1),
 268                 authcid ? authcid : "<empty>",
 269                 authzid ? authzid : "<empty>" );
 270 #endif
 271
 272
 273         /* Convert the identities to DN's. If no authzid was given, client will
 274            be bound as the DN matching their username */
 275         rc = slap_sasl_getdn( conn, (char *)authcid, &authcDN, FLAG_GETDN_AUTHCID );
 276         if( rc != LDAP_SUCCESS ) {
 277                 *errstr = ldap_err2string( rc );
 278                 return SASL_NOAUTHZ;
 279         }
 280         if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
 281 #ifdef NEW_LOGGING
 282                 LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 283                            "slap_sasl_authorize: conn %d  Using authcDN=%s\n",
 284                            conn ? conn->c_connid : -1, authcDN ));
 285 #else
 286                 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
 287                  "Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN,0 );
 288 #endif
 289
 290                 *user = authcDN;
 291                 *errstr = NULL;
 292                 return SASL_OK;
 293         }
 294         rc = slap_sasl_getdn( conn, (char *)authzid, &authzDN, FLAG_GETDN_AUTHZID );
 295         if( rc != LDAP_SUCCESS ) {
 296                 ch_free( authcDN );
 297                 *errstr = ldap_err2string( rc );
 298                 return SASL_NOAUTHZ;
 299         }
 300
 301         rc = slap_sasl_authorized( authcDN, authzDN );
 302         if( rc ) {
 303 #ifdef NEW_LOGGING
 304                 LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
 305                            "slap_sasl_authorize: conn %ld  authorization disallowed (%d)\n",
 306                            (long)(conn ? conn->c_connid : -1), rc ));
 307 #else
 308                 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
 309                         " authorization disallowed (%d)\n",
 310                         (long) (conn ? conn->c_connid : -1), rc, 0 );
 311 #endif
 312
 313                 *errstr = "not authorized";
 314                 ch_free( authcDN );
 315                 ch_free( authzDN );
 316                 return SASL_NOAUTHZ;
 317         }
 318
 319 #ifdef NEW_LOGGING
 320         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 321                    "slap_sasl_authorize: conn %d authorization allowed\n",
 322                    (long)(conn ? conn->c_connid : -1 ) ));
 323 #else
 324         Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
 325                 " authorization allowed\n",
 326                 (long) (conn ? conn->c_connid : -1), 0, 0 );
 327 #endif
 328
 329
 330         ch_free( authcDN );
 331         *user = authzDN;
 332         *errstr = NULL;
 333         return SASL_OK;
 334 }
 335
 336
 337 static int
 338 slap_sasl_err2ldap( int saslerr )
 339 {
 340         int rc;
 341
 342         switch (saslerr) {
 343                 case SASL_CONTINUE:
 344                         rc = LDAP_SASL_BIND_IN_PROGRESS;
 345                         break;
 346                 case SASL_FAIL:
 347                         rc = LDAP_OTHER;
 348                         break;
 349                 case SASL_NOMEM:
 350                         rc = LDAP_OTHER;
 351                         break;
 352                 case SASL_NOMECH:
 353                         rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 354                         break;
 355                 case SASL_BADAUTH:
 356                         rc = LDAP_INVALID_CREDENTIALS;
 357                         break;
 358                 case SASL_NOAUTHZ:
 359                         rc = LDAP_INSUFFICIENT_ACCESS;
 360                         break;
 361                 case SASL_TOOWEAK:
 362                 case SASL_ENCRYPT:
 363                         rc = LDAP_INAPPROPRIATE_AUTH;
 364                         break;
 365                 default:
 366                         rc = LDAP_OTHER;
 367                         break;
 368         }
 369
 370         return rc;
 371 }
 372 #endif
 373
 374
 375 int slap_sasl_init( void )
 376 {
 377 #ifdef HAVE_CYRUS_SASL
 378         int rc;
 379         static sasl_callback_t server_callbacks[] = {
 380                 { SASL_CB_LOG, &slap_sasl_log, NULL },
 381                 { SASL_CB_LIST_END, NULL, NULL }
 382         };
 383
 384         sasl_set_alloc(
 385                 ch_malloc,
 386                 ch_calloc,
 387                 ch_realloc,
 388                 ch_free );
 389
 390         sasl_set_mutex(
 391                 ldap_pvt_sasl_mutex_new,
 392                 ldap_pvt_sasl_mutex_lock,
 393                 ldap_pvt_sasl_mutex_unlock,
 394                 ldap_pvt_sasl_mutex_dispose );
 395
 396         /* should provide callbacks for logging */
 397         /* server name should be configurable */
 398         rc = sasl_server_init( server_callbacks, "slapd" );
 399
 400         if( rc != SASL_OK ) {
 401 #ifdef NEW_LOGGING
 402                 LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
 403                            "slap_sasl_init: init failed.\n" ));
 404 #else
 405                 Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
 406                         0, 0, 0 );
 407 #endif
 408
 409                 return -1;
 410         }
 411
 412 #ifdef NEW_LOGGING
 413         LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
 414                    "slap_sasl_init: initialized!\n"));
 415 #else
 416         Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
 417                 0, 0, 0 );
 418 #endif
 419
 420
 421         /* default security properties */
 422         memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
 423     sasl_secprops.max_ssf = INT_MAX;
 424     sasl_secprops.maxbufsize = 65536;
 425     sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
 426 #endif
 427
 428         return 0;
 429 }
 430
 431 int slap_sasl_destroy( void )
 432 {
 433 #ifdef HAVE_CYRUS_SASL
 434         sasl_done();
 435 #endif
 436         free( global_host );
 437         global_host = NULL;
 438
 439         return 0;
 440 }
 441
 442 int slap_sasl_open( Connection *conn )
 443 {
 444         int sc = LDAP_SUCCESS;
 445
 446 #ifdef HAVE_CYRUS_SASL
 447         sasl_conn_t *ctx = NULL;
 448         sasl_callback_t *session_callbacks;
 449
 450         assert( conn->c_sasl_context == NULL );
 451         assert( conn->c_sasl_extra == NULL );
 452
 453         conn->c_sasl_layers = 0;
 454
 455         session_callbacks =
 456                 ch_calloc( 3, sizeof(sasl_callback_t));
 457         conn->c_sasl_extra = session_callbacks;
 458
 459         session_callbacks[0].id = SASL_CB_LOG;
 460         session_callbacks[0].proc = &slap_sasl_log;
 461         session_callbacks[0].context = conn;
 462
 463         session_callbacks[1].id = SASL_CB_PROXY_POLICY;
 464         session_callbacks[1].proc = &slap_sasl_authorize;
 465         session_callbacks[1].context = conn;
 466
 467         session_callbacks[2].id = SASL_CB_LIST_END;
 468         session_callbacks[2].proc = NULL;
 469         session_callbacks[2].context = NULL;
 470
 471         if( global_host == NULL ) {
 472                 global_host = ldap_pvt_get_fqdn( NULL );
 473         }
 474
 475         /* create new SASL context */
 476         sc = sasl_server_new( "ldap", global_host, global_realm,
 477                 session_callbacks, SASL_SECURITY_LAYER, &ctx );
 478
 479         if( sc != SASL_OK ) {
 480 #ifdef NEW_LOGGING
 481                 LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 482                            "slap_sasl_open: sasl_server_new failed: %d\n", sc ));
 483 #else
 484                 Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
 485                         sc, 0, 0 );
 486 #endif
 487
 488                 return -1;
 489         }
 490
 491         conn->c_sasl_context = ctx;
 492
 493         if( sc == SASL_OK ) {
 494                 sc = sasl_setprop( ctx,
 495                         SASL_SEC_PROPS, &sasl_secprops );
 496
 497                 if( sc != SASL_OK ) {
 498 #ifdef NEW_LOGGING
 499                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 500                                    "slap_sasl_open: sasl_setprop failed: %d \n", sc ));
 501 #else
 502                         Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
 503                                 sc, 0, 0 );
 504 #endif
 505
 506                         slap_sasl_close( conn );
 507                         return -1;
 508                 }
 509         }
 510
 511         sc = slap_sasl_err2ldap( sc );
 512 #endif
 513         return sc;
 514 }
 515
 516 int slap_sasl_external(
 517         Connection *conn,
 518         slap_ssf_t ssf,
 519         const char *auth_id )
 520 {
 521 #ifdef HAVE_CYRUS_SASL
 522         int sc;
 523         sasl_conn_t *ctx = conn->c_sasl_context;
 524         sasl_external_properties_t extprops;
 525
 526         if ( ctx == NULL ) {
 527                 return LDAP_UNAVAILABLE;
 528         }
 529
 530         memset( &extprops, '\0', sizeof(extprops) );
 531         extprops.ssf = ssf;
 532         extprops.auth_id = (char *) auth_id;
 533
 534         sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 535                 (void *) &extprops );
 536
 537         if ( sc != SASL_OK ) {
 538                 return LDAP_OTHER;
 539         }
 540 #endif
 541
 542         return LDAP_SUCCESS;
 543 }
 544
 545 int slap_sasl_reset( Connection *conn )
 546 {
 547 #ifdef HAVE_CYRUS_SASL
 548         sasl_conn_t *ctx = conn->c_sasl_context;
 549
 550         if( ctx != NULL ) {
 551         }
 552 #endif
 553         /* must return "anonymous" */
 554         return LDAP_SUCCESS;
 555 }
 556
 557 char ** slap_sasl_mechs( Connection *conn )
 558 {
 559         char **mechs = NULL;
 560
 561 #ifdef HAVE_CYRUS_SASL
 562         sasl_conn_t *ctx = conn->c_sasl_context;
 563
 564         if( ctx != NULL ) {
 565                 int sc;
 566                 char *mechstr;
 567
 568                 sc = sasl_listmech( ctx,
 569                         NULL, NULL, ",", NULL,
 570                         &mechstr, NULL, NULL );
 571
 572                 if( sc != SASL_OK ) {
 573 #ifdef NEW_LOGGING
 574                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 575                                 "slap_sasl_mechs: sasl_listmech failed: %d\n", sc ));
 576 #else
 577                         Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
 578                                 sc, 0, 0 );
 579 #endif
 580
 581                         return NULL;
 582                 }
 583
 584                 mechs = str2charray( mechstr, "," );
 585
 586                 ch_free( mechstr );
 587         }
 588 #endif
 589
 590         return mechs;
 591 }
 592
 593 int slap_sasl_close( Connection *conn )
 594 {
 595 #ifdef HAVE_CYRUS_SASL
 596         sasl_conn_t *ctx = conn->c_sasl_context;
 597
 598         if( ctx != NULL ) {
 599                 sasl_dispose( &ctx );
 600         }
 601
 602         conn->c_sasl_context = NULL;
 603
 604         free( conn->c_sasl_extra );
 605         conn->c_sasl_extra = NULL;
 606 #endif
 607
 608         return LDAP_SUCCESS;
 609 }
 610
 611 int slap_sasl_bind(
 612     Connection          *conn,
 613     Operation           *op,
 614     struct berval       *dn,
 615     struct berval       *ndn,
 616     struct berval       *cred,
 617         char                    **edn,
 618         slap_ssf_t              *ssfp )
 619 {
 620         int rc = 1;
 621
 622 #ifdef HAVE_CYRUS_SASL
 623         sasl_conn_t *ctx = conn->c_sasl_context;
 624         struct berval response;
 625         unsigned reslen = 0;
 626         const char *errstr;
 627         int sc;
 628
 629 #ifdef NEW_LOGGING
 630         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 631                 "sasl_bind: conn %ld dn=\"%s\" mech=%s datalen=%ld\n",
 632                 conn->c_connid,
 633                 dn->bv_len ? dn->bv_val : "",
 634                 conn->c_sasl_bind_in_progress ? "<continuing>" : conn->c_sasl_bind_mech,
 635                 cred ? cred->bv_len : 0 ));
 636 #else
 637         Debug(LDAP_DEBUG_ARGS,
 638                 "==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
 639                 dn->bv_len ? dn->bv_val : "",
 640                 conn->c_sasl_bind_in_progress ? "<continuing>":conn->c_sasl_bind_mech,
 641                 cred ? cred->bv_len : 0 );
 642 #endif
 643
 644
 645         if( ctx == NULL ) {
 646                 send_ldap_result( conn, op, LDAP_UNAVAILABLE,
 647                         NULL, "SASL unavailable on this session", NULL, NULL );
 648                 return rc;
 649         }
 650
 651         if ( !conn->c_sasl_bind_in_progress ) {
 652                 sc = sasl_server_start( ctx,
 653                         conn->c_sasl_bind_mech,
 654                         cred->bv_len ? cred->bv_val : "",
 655                         cred->bv_len,
 656                         (char **)&response.bv_val, &reslen, &errstr );
 657
 658         } else {
 659                 sc = sasl_server_step( ctx,
 660                         cred->bv_val, cred->bv_len,
 661                         (char **)&response.bv_val, &reslen, &errstr );
 662         }
 663
 664         response.bv_len = reslen;
 665
 666         if ( sc == SASL_OK ) {
 667                 char *username = NULL;
 668
 669                 sc = sasl_getprop( ctx,
 670                         SASL_USERNAME, (void **)&username );
 671
 672                 if ( sc != SASL_OK ) {
 673 #ifdef NEW_LOGGING
 674                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 675                                 "slap_sasl_bind: getprop(USERNAME) failed: %d\n", sc ));
 676 #else
 677                         Debug(LDAP_DEBUG_TRACE,
 678                                 "slap_sasl_bind: getprop(USERNAME) failed!\n",
 679                                 0, 0, 0);
 680 #endif
 681
 682
 683                         send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
 684                                 NULL, "no SASL username", NULL, NULL );
 685
 686                 } else {
 687                         rc = slap_sasl_getdn( conn, username, edn, FLAG_GETDN_FINAL );
 688
 689                         if( rc == LDAP_SUCCESS ) {
 690                                 int i;
 691                                 sasl_ssf_t *ssf = NULL;
 692                                 (void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
 693                                 *ssfp = ssf ? *ssf : 0;
 694
 695                                 if( *ssfp ) {
 696                                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 697                                         conn->c_sasl_layers++;
 698                                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 699                                 }
 700
 701                                 /* Store the authorization DN as a subjectDN */
 702                                 if ( *edn ) {
 703                                         i = 2;
 704                                         do {
 705                                                 i++;
 706                                                 (*edn)[i-3] = (*edn)[i];
 707                                         } while( (*edn)[i] );
 708                                 }
 709
 710                                 send_ldap_sasl( conn, op, rc,
 711                                         NULL, NULL, NULL, NULL,
 712                                         response.bv_len ? &response : NULL );
 713
 714                         } else {
 715                                 send_ldap_result( conn, op, rc,
 716                                         NULL, errstr, NULL, NULL );
 717                         }
 718                 }
 719
 720         } else if ( sc == SASL_CONTINUE ) {
 721                 send_ldap_sasl( conn, op, rc = LDAP_SASL_BIND_IN_PROGRESS,
 722                         NULL, NULL, NULL, NULL, &response );
 723
 724         } else {
 725                 send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
 726                         NULL, errstr, NULL, NULL );
 727         }
 728
 729         if( response.bv_len ) {
 730                 ch_free( response.bv_val );
 731         }
 732
 733 #ifdef NEW_LOGGING
 734         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 735                 "slap_sasl_bind: rc=%d\n", rc ));
 736 #else
 737         Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rc, 0, 0);
 738 #endif
 739
 740
 741 #else
 742         send_ldap_result( conn, op, rc = LDAP_UNAVAILABLE,
 743                 NULL, "SASL not supported", NULL, NULL );
 744 #endif
 745
 746         return rc;
 747 }
 748
 749 char* slap_sasl_secprops( const char *in )
 750 {
 751 #ifdef HAVE_CYRUS_SASL
 752         int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
 753
 754         return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
 755 #else
 756         return "SASL not supported";
 757 #endif
 758 }