DBusSocket
_dbus_accept_with_noncefile (DBusSocket listen_fd, const DBusNonceFile *noncefile)
{
DBusSocket fd = _dbus_socket_get_invalid ();
DBusString nonce;
_dbus_assert (noncefile != NULL);
/* Make it valid to "free" this even if _dbus_string_init() runs
* out of memory: see comment in do_check_nonce() */
_dbus_string_init_const (&nonce, "");
if (!_dbus_string_init (&nonce))
goto out;
//PENDING(kdab): set better errors
if (_dbus_read_nonce (_dbus_noncefile_get_path(noncefile), &nonce, NULL) != TRUE)
goto out;
fd = _dbus_accept (listen_fd);
if (!_dbus_socket_is_valid (fd))
goto out;
if (do_check_nonce(fd, &nonce, NULL) != TRUE) {
_dbus_verbose ("nonce check failed. Closing socket.\n");
_dbus_close_socket(fd, NULL);
_dbus_socket_invalidate (&fd);
goto out;
}
out:
_dbus_string_free (&nonce);
return fd;
}
/**
* sends the nonce over a given socket. Blocks while doing so.
*
* @param fd the file descriptor to write the nonce data to (usually a socket)
* @param noncefile the noncefile location to read the nonce from
* @param error contains error details if FALSE is returned
* @return TRUE iff the nonce was successfully sent. Note that this does not
* indicate whether the server accepted the nonce.
*/
dbus_bool_t
_dbus_send_nonce (DBusSocket fd,
const DBusString *noncefile,
DBusError *error)
{
dbus_bool_t read_result;
int send_result;
DBusString nonce;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (_dbus_string_get_length (noncefile) == 0)
return FALSE;
if (!_dbus_string_init (&nonce))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return FALSE;
}
read_result = _dbus_read_nonce (noncefile, &nonce, error);
if (!read_result)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
_dbus_string_free (&nonce);
return FALSE;
}
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
send_result = _dbus_write_socket (fd, &nonce, 0, _dbus_string_get_length (&nonce));
_dbus_string_free (&nonce);
if (send_result == -1)
{
dbus_set_error (error,
_dbus_error_from_system_errno (),
"Failed to send nonce (fd=%" DBUS_SOCKET_FORMAT "): %s",
_dbus_socket_printable (fd),
_dbus_strerror_from_errno ());
return FALSE;
}
return TRUE;
}
int
_dbus_accept_with_noncefile (int listen_fd, const DBusNonceFile *noncefile)
{
int fd;
DBusString nonce;
_dbus_assert (noncefile != NULL);
if (!_dbus_string_init (&nonce))
return -1;
//PENDING(kdab): set better errors
if (_dbus_read_nonce (_dbus_noncefile_get_path(noncefile), &nonce, NULL) != TRUE)
return -1;
fd = _dbus_accept (listen_fd);
if (_dbus_socket_is_invalid (fd))
return fd;
if (do_check_nonce(fd, &nonce, NULL) != TRUE) {
_dbus_verbose ("nonce check failed. Closing socket.\n");
_dbus_close_socket(fd, NULL);
return -1;
}
return fd;
}
