/**
* @access private
*/
function _checkReturnTo($message, $return_to)
{
// Check an OpenID message and its openid.return_to value
// against a return_to URL from an application. Return True
// on success, False on failure.
// Check the openid.return_to args against args in the
// original message.
$result = Auth_OpenID_GenericConsumer::_verifyReturnToArgs($message->toPostArgs());
if (Auth_OpenID::isFailure($result)) {
return false;
}
// Check the return_to base URL against the one in the
// message.
$msg_return_to = $message->getArg(Auth_OpenID_OPENID_NS, 'return_to');
if (Auth_OpenID::isFailure($return_to)) {
// XXX log me
return false;
}
$return_to_parts = parse_url(Auth_OpenID_urinorm($return_to));
$msg_return_to_parts = parse_url(Auth_OpenID_urinorm($msg_return_to));
// If port is absent from both, add it so it's equal in the
// check below.
if (!array_key_exists('port', $return_to_parts) && !array_key_exists('port', $msg_return_to_parts)) {
$return_to_parts['port'] = null;
$msg_return_to_parts['port'] = null;
}
// If path is absent from both, add it so it's equal in the
// check below.
if (!array_key_exists('path', $return_to_parts) && !array_key_exists('path', $msg_return_to_parts)) {
$return_to_parts['path'] = null;
$msg_return_to_parts['path'] = null;
}
// The URL scheme, authority, and path MUST be the same
// between the two URLs.
foreach (array('scheme', 'host', 'port', 'path') as $component) {
// If the url component is absent in either URL, fail.
// There should always be a scheme, host, port, and path.
if (!array_key_exists($component, $return_to_parts)) {
return false;
}
if (!array_key_exists($component, $msg_return_to_parts)) {
return false;
}
if (Auth_OpenID::arrayGet($return_to_parts, $component) !== Auth_OpenID::arrayGet($msg_return_to_parts, $component)) {
return false;
}
}
return true;
}