/**
* Retrive assiciation information for given $url from internal cahce or
* external storage
*
* @param string $url OpenID server url
* @param string &$handle association handle
* @param string &$macFunc HMAC function (sha1 or sha256)
* @param string &$secret shared secret
* @param integer &$expires expiration UNIX time
* @return void
*/
protected function _getAssociation($url, &$handle, &$macFunc, &$secret, &$expires)
{
if (isset($this->_cache[$url])) {
$handle = $this->_cache[$url][0];
$macFunc = $this->_cache[$url][1];
$secret = $this->_cache[$url][2];
$expires = $this->_cache[$url][3];
return true;
}
if ($this->_storage->getAssociation($url, $handle, $macFunc, $secret, $expires)) {
$this->_cache[$url] = array($handle, $macFunc, $secret, $expires);
return true;
}
return false;
}
