Viewing file:  Facebook.php (2.63 KB) -rw-r--r--
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<?php
require_once(dirname(dirname(__FILE__)) . '/extlibinc/base_facebook.php');
/**
* Extends the BaseFacebook class with the intent of using
* PHP sessions to store user ids and access tokens.
*/
class sspmod_authfacebook_Facebook extends BaseFacebook
{
/* SimpleSAMLPhp state array */
protected $ssp_state;
/**
* Identical to the parent constructor, except that
* we start a PHP session to store the user ID and
* access token if during the course of execution
* we discover them.
*
* @param Array $config the application configuration.
* @see BaseFacebook::__construct in base_facebook.php
*/
public function __construct(array $config, &$ssp_state) {
$this->ssp_state = &$ssp_state;
parent::__construct($config);
}
protected static $kSupportedKeys =
array('state', 'code', 'access_token', 'user_id');
/**
* Provides the implementations of the inherited abstract
* methods. The implementation uses PHP sessions to maintain
* a store for authorization codes, user ids, CSRF states, and
* access tokens.
*/
protected function setPersistentData($key, $value) {
if (!in_array($key, self::$kSupportedKeys)) {
SimpleSAML_Logger::debug("Unsupported key passed to setPersistentData: " . var_export($key, TRUE));
return;
}
$session_var_name = $this->constructSessionVariableName($key);
$this->ssp_state[$session_var_name] = $value;
}
protected function getPersistentData($key, $default = false) {
if (!in_array($key, self::$kSupportedKeys)) {
SimpleSAML_Logger::debug("Unsupported key passed to getPersistentData: " . var_export($key, TRUE));
return $default;
}
$session_var_name = $this->constructSessionVariableName($key);
if (isset($this->ssp_state[$session_var_name])) {
$value = $this->ssp_state[$session_var_name];
}
return isset($value) ? $value : $default;
}
protected function clearPersistentData($key) {
if (!in_array($key, self::$kSupportedKeys)) {
SimpleSAML_Logger::debug("Unsupported key passed to clearPersistentData: " . var_export($key, TRUE));
return;
}
$session_var_name = $this->constructSessionVariableName($key);
if (isset($this->ssp_state[$session_var_name])) {
unset($this->ssp_state[$session_var_name]);
}
}
protected function clearAllPersistentData() {
foreach (self::$kSupportedKeys as $key) {
$this->clearPersistentData($key);
}
}
protected function constructSessionVariableName($key) {
return 'authfacebook:authdata:' . implode('_', array('fb',
$this->getAppId(),
$key));
}
}
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