public function execute(Xerxes_Framework_Request $objRequest, Xerxes_Framework_Registry $objRegistry)
{
// if the authentication_source is set in the request, then it takes precedence
$override = $objRequest->getProperty("authentication_source");
if ($override == null) {
// otherwise, see if one has been set in session from a previous login
$session_auth = $objRequest->getSession("auth");
if ($session_auth != "") {
$override = $session_auth;
}
}
// make sure it's in our list, or if blank still, we get the default
$configAuth = $objRegistry->getAuthenticationSource($override);
// now make it!
switch ($configAuth) {
case "ldap":
$this->authentication = new Xerxes_LDAP($objRequest, $objRegistry);
break;
case "innovative":
$iii_file = "config/authentication/innovative.php";
if (file_exists($iii_file)) {
require_once $iii_file;
$this->authentication = new Xerxes_InnovativePatron_Local($objRequest, $objRegistry);
} else {
$this->authentication = new Xerxes_InnovativePatron($objRequest, $objRegistry);
}
break;
case "cas":
$this->authentication = new Xerxes_CAS($objRequest, $objRegistry);
break;
case "guest":
$this->authentication = new Xerxes_GuestAuthentication($objRequest, $objRegistry);
break;
case "demo":
$this->authentication = new Xerxes_DemoAuthentication($objRequest, $objRegistry);
break;
case "pds":
$this->authentication = new Xerxes_PDS($objRequest, $objRegistry);
break;
case "shibboleth":
$shib_file = "config/authentication/shibboleth.php";
if (file_exists($shib_file)) {
require_once $shib_file;
$this->authentication = new Xerxes_Shibboleth_Local($objRequest, $objRegistry);
} else {
$this->authentication = new Xerxes_Shibboleth($objRequest, $objRegistry);
}
break;
case "custom":
require_once "config/authentication/custom.php";
$this->authentication = new Xerxes_CustomAuth($objRequest, $objRegistry);
break;
default:
// check to see if a file exists with an authentication class that extends the framework,
// if so, then use it; this supports multiple custom schemes
$local_file = "config/authentication/{$configAuth}.php";
$class_name = "Xerxes_CustomAuth_" . Xerxes_Framework_Parser::strtoupper(substr($configAuth, 0, 1)) . substr($configAuth, 1);
if (file_exists($local_file)) {
require_once $local_file;
if (!class_exists($class_name)) {
throw new Exception("the custom authentication scheme '{$configAuth}' should have a class called '{$class_name}'");
}
$this->authentication = new $class_name($objRequest, $objRegistry);
if (!$this->authentication instanceof Xerxes_Framework_Authenticate) {
throw new Exception("class '{$class_name}' for the '{$configAuth}' authentication scheme must extend Xerxes_Framework_Authenticate");
}
} else {
throw new Exception("unsupported authentication type");
}
}
// we set this so we can keep track of the authentication type
// through various requests
$this->authentication->id = $configAuth;
parent::execute($objRequest, $objRegistry);
}
