guint16
my_dbus_server_get_port (DBusServer* server)
{
DBusAddressEntry**entries;
DBusError error;
guint16 port = 0;
char * address = dbus_server_get_address (server);
int n_entries;
int i;
dbus_error_init (&error);
if (!dbus_parse_address (address, &entries, &n_entries, &error))
{
g_warning ("error parsing server address: %s",
error.message);
dbus_error_free (&error);
free (address);
exit (1);
return 0;
}
for (i = 0; i < n_entries; i++)
{
if (!strcmp ("tcp", dbus_address_entry_get_method (entries[i])))
{
port = atoi (dbus_address_entry_get_value (entries[i], "port"));
break;
}
}
dbus_address_entries_free (entries);
free (address);
return port;
}
/**
* Verifies if a given D-Bus address is a valid address
* by attempting to connect to it. If it is, returns the
* opened DBusTransport object. If it isn't, returns #NULL
* and sets @p error.
*
* @param error address where an error can be returned.
* @returns a new transport, or #NULL on failure.
*/
static DBusTransport*
check_address (const char *address, DBusError *error)
{
DBusAddressEntry **entries;
DBusTransport *transport = NULL;
int len, i;
_dbus_assert (address != NULL);
_dbus_assert (*address != '\0');
if (!dbus_parse_address (address, &entries, &len, error))
return FALSE; /* not a valid address */
for (i = 0; i < len; i++)
{
transport = _dbus_transport_open (entries[i], error);
if (transport != NULL)
break;
}
dbus_address_entries_free (entries);
return transport;
}
/**
* Listens for new connections on the given address. If there are
* multiple semicolon-separated address entries in the address, tries
* each one and listens on the first one that works.
*
* Returns #NULL and sets error if listening fails for any reason.
* Otherwise returns a new #DBusServer.
* dbus_server_set_new_connection_function(),
* dbus_server_set_watch_functions(), and
* dbus_server_set_timeout_functions() should be called immediately to
* render the server fully functional.
*
* To free the server, applications must call first
* dbus_server_disconnect() and then dbus_server_unref().
*
* @param address the address of this server.
* @param error location to store reason for failure.
* @returns a new #DBusServer, or #NULL on failure.
*
*/
DBusServer*
dbus_server_listen (const char *address,
DBusError *error)
{
DBusServer *server;
DBusAddressEntry **entries;
int len, i;
DBusError first_connect_error = DBUS_ERROR_INIT;
dbus_bool_t handled_once;
_dbus_return_val_if_fail (address != NULL, NULL);
_dbus_return_val_if_error_is_set (error, NULL);
if (!dbus_parse_address (address, &entries, &len, error))
return NULL;
server = NULL;
handled_once = FALSE;
for (i = 0; i < len; i++)
{
int j;
for (j = 0; j < (int) _DBUS_N_ELEMENTS (listen_funcs); ++j)
{
DBusServerListenResult result;
DBusError tmp_error = DBUS_ERROR_INIT;
result = (* listen_funcs[j].func) (entries[i],
&server,
&tmp_error);
if (result == DBUS_SERVER_LISTEN_OK)
{
_dbus_assert (server != NULL);
_DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
handled_once = TRUE;
goto out;
}
else if (result == DBUS_SERVER_LISTEN_ADDRESS_ALREADY_USED)
{
_dbus_assert (server == NULL);
dbus_set_error (error,
DBUS_ERROR_ADDRESS_IN_USE,
"Address '%s' already used",
dbus_address_entry_get_method (entries[0]));
handled_once = TRUE;
goto out;
}
else if (result == DBUS_SERVER_LISTEN_BAD_ADDRESS)
{
_dbus_assert (server == NULL);
_DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
dbus_move_error (&tmp_error, error);
handled_once = TRUE;
goto out;
}
else if (result == DBUS_SERVER_LISTEN_NOT_HANDLED)
{
_dbus_assert (server == NULL);
_DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
/* keep trying addresses */
}
else if (result == DBUS_SERVER_LISTEN_DID_NOT_CONNECT)
{
_dbus_assert (server == NULL);
_DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
if (!dbus_error_is_set (&first_connect_error))
dbus_move_error (&tmp_error, &first_connect_error);
else
dbus_error_free (&tmp_error);
handled_once = TRUE;
/* keep trying addresses */
}
}
_dbus_assert (server == NULL);
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
}
out:
if (!handled_once)
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (len > 0)
dbus_set_error (error,
DBUS_ERROR_BAD_ADDRESS,
"Unknown address type '%s'",
dbus_address_entry_get_method (entries[0]));
else
dbus_set_error (error,
DBUS_ERROR_BAD_ADDRESS,
"Empty address '%s'",
address);
}
dbus_address_entries_free (entries);
if (server == NULL)
{
_dbus_assert (error == NULL || dbus_error_is_set (&first_connect_error) ||
dbus_error_is_set (error));
if (error && dbus_error_is_set (error))
{
/* already set the error */
}
else
{
/* didn't set the error but either error should be
* NULL or first_connect_error should be set.
*/
_dbus_assert (error == NULL || dbus_error_is_set (&first_connect_error));
dbus_move_error (&first_connect_error, error);
}
_DBUS_ASSERT_ERROR_IS_CLEAR (&first_connect_error); /* be sure we freed it */
_DBUS_ASSERT_ERROR_IS_SET (error);
return NULL;
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return server;
}
}
