3 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
13 #include "proto-slap.h"
18 #ifdef HAVE_CYRUS_SASL
28 static char *sasl_host = NULL;
29 static sasl_security_properties_t sasl_secprops;
38 Connection *conn = context;
42 if ( message == NULL ) {
48 level = LDAP_DEBUG_ANY;
51 case SASL_LOG_WARNING:
52 level = LDAP_DEBUG_TRACE;
56 level = LDAP_DEBUG_TRACE;
63 Debug( level, "SASL [conn=%d] %s: %s\n",
64 conn ? conn->c_connid: -1,
78 Connection *conn = context;
81 if ( authcid == NULL || *authcid == '\0' ) {
82 *errstr = "empty authentication identity";
84 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
85 "empty authentication identity\n",
86 (long) (conn ? conn->c_connid : -1),
91 if ( authzid == NULL || *authzid == '\0' ||
92 strcmp( authcid, authzid ) == 0 )
94 size_t len = sizeof("u:") + strlen( authcid );
95 canon = ch_malloc( len );
96 strcpy( canon, "u:" );
97 strcpy( &canon[sizeof("u:")-1], authcid );
101 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
102 "\"%s\" as \"%s\"\n",
103 (long) (conn ? conn->c_connid : -1),
108 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
109 "\"%s\" as \"%s\" disallowed. No policy.\n",
110 (long) (conn ? conn->c_connid : -1),
113 *errstr = "no proxy policy";
119 slap_sasl_err2ldap( int saslerr )
125 rc = LDAP_SASL_BIND_IN_PROGRESS;
134 rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
137 rc = LDAP_INVALID_CREDENTIALS;
140 rc = LDAP_INSUFFICIENT_ACCESS;
144 rc = LDAP_INAPPROPRIATE_AUTH;
156 int slap_sasl_init( void )
158 #ifdef HAVE_CYRUS_SASL
160 sasl_conn_t *server = NULL;
161 static sasl_callback_t server_callbacks[] = {
162 { SASL_CB_LOG, &sasl_cb_log, NULL },
163 { SASL_CB_LIST_END, NULL, NULL }
173 ldap_pvt_sasl_mutex_new,
174 ldap_pvt_sasl_mutex_lock,
175 ldap_pvt_sasl_mutex_unlock,
176 ldap_pvt_sasl_mutex_dispose );
178 /* should provide callbacks for logging */
179 /* server name should be configurable */
180 rc = sasl_server_init( server_callbacks, "slapd" );
182 if( rc != SASL_OK ) {
183 Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
188 if( sasl_host == NULL ) {
189 static char hostname[MAXHOSTNAMELEN+1];
191 if( gethostname( hostname, MAXHOSTNAMELEN ) == 0 ) {
192 hostname[MAXHOSTNAMELEN] = '\0';
193 sasl_host = hostname;
197 Debug( LDAP_DEBUG_TRACE,
198 "slap_sasl_init: %s initialized!\n",
201 /* default security properties */
202 memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
203 sasl_secprops.max_ssf = UINT_MAX;
204 sasl_secprops.maxbufsize = 65536;
205 sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
208 lutil_passwd_sasl_conn = server;
210 sasl_dispose( &server );
217 int slap_sasl_destroy( void )
219 #ifdef HAVE_CYRUS_SASL
221 sasl_dispose( &lutil_passwd_sasl_conn );
228 int slap_sasl_open( Connection *conn )
230 int sc = LDAP_SUCCESS;
232 #ifdef HAVE_CYRUS_SASL
233 sasl_conn_t *ctx = NULL;
234 sasl_callback_t *session_callbacks;
236 assert( conn->c_sasl_context == NULL );
237 assert( conn->c_sasl_extra == NULL );
240 ch_calloc( 3, sizeof(sasl_callback_t));
241 conn->c_sasl_extra = session_callbacks;
243 session_callbacks[0].id = SASL_CB_LOG;
244 session_callbacks[0].proc = &sasl_cb_log;
245 session_callbacks[0].context = conn;
247 session_callbacks[1].id = SASL_CB_PROXY_POLICY;
248 session_callbacks[1].proc = &slap_sasl_authorize;
249 session_callbacks[1].context = conn;
251 session_callbacks[2].id = SASL_CB_LIST_END;
252 session_callbacks[2].proc = NULL;
253 session_callbacks[2].context = NULL;
255 /* create new SASL context */
256 sc = sasl_server_new( "ldap", sasl_host, global_realm,
258 #ifdef LDAP_SASL_SECURITY_LAYER
266 if( sc != SASL_OK ) {
267 Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
272 conn->c_sasl_context = ctx;
274 if( sc == SASL_OK ) {
275 sc = sasl_setprop( ctx,
276 SASL_SEC_PROPS, &sasl_secprops );
278 if( sc != SASL_OK ) {
279 Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
281 slap_sasl_close( conn );
286 sc = slap_sasl_err2ldap( sc );
291 int slap_sasl_external(
296 #ifdef HAVE_CYRUS_SASL
298 sasl_conn_t *ctx = conn->c_sasl_context;
299 sasl_external_properties_t extprops;
302 return LDAP_UNAVAILABLE;
305 memset( &extprops, 0L, sizeof(extprops) );
307 extprops.auth_id = auth_id;
309 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
310 (void *) &extprops );
312 if ( sc != SASL_OK ) {
320 int slap_sasl_reset( Connection *conn )
322 #ifdef HAVE_CYRUS_SASL
323 sasl_conn_t *ctx = conn->c_sasl_context;
328 /* must return "anonymous" */
332 char ** slap_sasl_mechs( Connection *conn )
336 #ifdef HAVE_CYRUS_SASL
337 sasl_conn_t *ctx = conn->c_sasl_context;
343 sc = sasl_listmech( ctx,
344 NULL, NULL, ",", NULL,
345 &mechstr, NULL, NULL );
347 if( sc != SASL_OK ) {
348 Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
353 mechs = str2charray( mechstr, "," );
362 int slap_sasl_close( Connection *conn )
364 #ifdef HAVE_CYRUS_SASL
365 sasl_conn_t *ctx = conn->c_sasl_context;
368 sasl_dispose( &ctx );
371 conn->c_sasl_context = NULL;
373 free( conn->c_sasl_extra );
374 conn->c_sasl_extra = NULL;
390 #ifdef HAVE_CYRUS_SASL
391 sasl_conn_t *ctx = conn->c_sasl_context;
392 struct berval response;
397 Debug(LDAP_DEBUG_ARGS,
398 "==> sasl_bind: dn=\"%s\" mech=%s cred->bv_len=%d\n",
399 dn, mech, cred ? cred->bv_len : 0 );
402 send_ldap_result( conn, op, LDAP_UNAVAILABLE,
403 NULL, "SASL unavailable on this session", NULL, NULL );
407 if ( mech != NULL ) {
408 sc = sasl_server_start( ctx,
410 cred->bv_val, cred->bv_len,
411 (char **)&response.bv_val, &reslen, &errstr );
414 sc = sasl_server_step( ctx,
415 cred->bv_val, cred->bv_len,
416 (char **)&response.bv_val, &reslen, &errstr );
419 response.bv_len = reslen;
421 if ( sc == SASL_OK ) {
422 char *username = NULL;
424 sc = sasl_getprop( ctx,
425 SASL_USERNAME, (void **)&username );
427 if ( sc != SASL_OK ) {
428 Debug(LDAP_DEBUG_TRACE,
429 "slap_sasl_bind: getprop(USERNAME) failed!\n",
432 send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
433 NULL, "no SASL username", NULL, NULL );
435 } else if ( username == NULL || *username == '\0' ) {
436 Debug(LDAP_DEBUG_TRACE,
437 "slap_sasl_bind: getprop(USERNAME) returned NULL!\n",
440 send_ldap_result( conn, op, rc = LDAP_INSUFFICIENT_ACCESS,
441 NULL, "no SASL username", NULL, NULL );
445 sasl_ssf_t *ssf = NULL;
447 (void) sasl_getprop( ctx,
448 SASL_REALM, (void **)&realm );
450 (void) sasl_getprop( ctx,
451 SASL_SSF, (void *)&ssf );
453 Debug(LDAP_DEBUG_TRACE,
454 "slap_sasl_bind: username=\"%s\" realm=\"%s\" ssf=%lu\n",
455 username ? username : "",
457 (unsigned long) ( ssf ? *ssf : 0 ) );
459 if( !strncasecmp( username, "anonymous", sizeof("anonyous")-1 ) &&
460 ( ( username[sizeof("anonymous")] == '\0' ) ||
461 ( username[sizeof("anonymous")] == '@' ) ) )
463 Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: anonymous\n",
467 *edn = ch_malloc( sizeof( "uid= + realm=" )
468 + ( username ? strlen( username ) : 0 )
469 + ( realm ? strlen( realm ) : 0 ) );
471 strcpy( *edn, "uid=" );
472 strcat( *edn, username );
474 if( realm && *realm ) {
475 strcat( *edn, " + realm=" );
476 strcat( *edn, realm );
479 Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: authzdn: \"%s\"\n",
483 send_ldap_sasl( conn, op, rc = LDAP_SUCCESS,
484 NULL, NULL, NULL, NULL, &response );
487 } else if ( sc == SASL_CONTINUE ) {
488 send_ldap_sasl( conn, op, rc = LDAP_SASL_BIND_IN_PROGRESS,
489 NULL, NULL, NULL, NULL, &response );
492 send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
493 NULL, errstr, NULL, NULL );
496 Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rc, 0, 0);
499 send_ldap_result( conn, op, rc = LDAP_UNAVAILABLE,
500 NULL, "SASL not supported", NULL, NULL );
506 char* slap_sasl_secprops( const char *in )
508 #ifdef HAVE_CYRUS_SASL
509 int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
511 return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
513 return "SASL not supported";