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<?php
/**
* HybridAuth
* http://hybridauth.sourceforge.net | http://github.com/hybridauth/hybridauth
* (c) 2009-2015, HybridAuth authors | http://hybridauth.sourceforge.net/licenses.html
*/
/**
* Hybrid_Endpoint class
*
* Provides a simple way to handle the OpenID and OAuth endpoint
*/
class Hybrid_Endpoint {
protected $request = null;
protected $initDone = false;
/**
* Process the current request
*
* @param array $request The current request parameters. Leave as null to default to use $_REQUEST.
*/
public function __construct($request = null) {
if (is_null($request)) {
// Fix a strange behavior when some provider call back ha endpoint
// with /index.php?hauth.done={provider}?{args}...
// >here we need to parse $_SERVER[QUERY_STRING]
$request = $_REQUEST;
if (isset($_SERVER["QUERY_STRING"]) && strrpos($_SERVER["QUERY_STRING"], '?')) {
$_SERVER["QUERY_STRING"] = str_replace("?", "&", $_SERVER["QUERY_STRING"]);
parse_str($_SERVER["QUERY_STRING"], $request);
}
}
// Setup request variable
$this->request = $request;
// If openid_policy requested, we return our policy document
if (isset($this->request["get"]) && $this->request["get"] == "openid_policy") {
$this->processOpenidPolicy();
}
// If openid_xrds requested, we return our XRDS document
if (isset($this->request["get"]) && $this->request["get"] == "openid_xrds") {
$this->processOpenidXRDS();
}
// If we get a hauth.start
if (isset($this->request["hauth_start"]) && $this->request["hauth_start"]) {
$this->processAuthStart();
}
// Else if hauth.done
elseif (isset($this->request["hauth_done"]) && $this->request["hauth_done"]) {
$this->processAuthDone();
}
// Else we advertise our XRDS document, something supposed to be done from the Realm URL page
else {
$this->processOpenidRealm();
}
}
/**
* Process the current request
*
* @param array $request The current request parameters. Leave as null to default to use $_REQUEST.
* @return Hybrid_Endpoint
*/
public static function process($request = null) {
// Trick for PHP 5.2, because it doesn't support late static binding
$class = function_exists('get_called_class') ? get_called_class() : __CLASS__;
new $class($request);
}
/**
* Process OpenID policy request
* @return void
*/
protected function processOpenidPolicy() {
$output = file_get_contents(dirname(__FILE__) . "/resources/openid_policy.html");
print $output;
die();
}
/**
* Process OpenID XRDS request
* @return void
*/
protected function processOpenidXRDS() {
header("Content-Type: application/xrds+xml");
$output = str_replace("{RETURN_TO_URL}", str_replace(
["<", ">", "\"", "'", "&"], ["<", ">", """, "'", "&"], Hybrid_Auth::getCurrentUrl(false),
), file_get_contents(dirname(__FILE__) . "/resources/openid_xrds.xml"));
print $output;
die();
}
/**
* Process OpenID realm request
* @return void
*/
protected function processOpenidRealm() {
$output = str_replace("{X_XRDS_LOCATION}", htmlentities(Hybrid_Auth::getCurrentUrl(false), ENT_QUOTES, 'UTF-8')
. "?get=openid_xrds&v="
. Hybrid_Auth::$version, file_get_contents(dirname(__FILE__) . "/resources/openid_realm.html"), );
print $output;
die();
}
/**
* Define: endpoint step 3
* @return void
* @throws Hybrid_Exception
*/
protected function processAuthStart() {
$this->authInit();
$provider_id = trim(strip_tags($this->request["hauth_start"]));
// check if page accessed directly
if (!Hybrid_Auth::storage()->get("hauth_session.$provider_id.hauth_endpoint")) {
Hybrid_Logger::error("Endpoint: hauth_endpoint parameter is not defined on hauth_start, halt login process!");
throw new Hybrid_Exception("You cannot access this page directly.");
}
// define:hybrid.endpoint.php step 2.
$hauth = Hybrid_Auth::setup($provider_id);
// if REQUESTed hauth_idprovider is wrong, session not created, etc.
if (!$hauth) {
Hybrid_Logger::error("Endpoint: Invalid parameter on hauth_start!");
throw new Hybrid_Exception("Invalid parameter! Please return to the login page and try again.");
}
try {
Hybrid_Logger::info("Endpoint: call adapter [{$provider_id}] loginBegin()");
$hauth->adapter->loginBegin();
} catch (Exception $e) {
Hybrid_Logger::error("Exception:" . $e->getMessage(), $e);
Hybrid_Error::setError($e->getMessage(), $e->getCode(), $e->getTraceAsString(), $e->getPrevious());
$hauth->returnToCallbackUrl();
}
die();
}
/**
* Define: endpoint step 3.1 and 3.2
* @return void
* @throws Hybrid_Exception
*/
protected function processAuthDone() {
$this->authInit();
$provider_id = trim(strip_tags($this->request["hauth_done"]));
$hauth = Hybrid_Auth::setup($provider_id);
if (!$hauth) {
Hybrid_Logger::error("Endpoint: Invalid parameter on hauth_done!");
$hauth->adapter->setUserUnconnected();
throw new Hybrid_Exception("Invalid parameter! Please return to the login page and try again.");
}
try {
Hybrid_Logger::info("Endpoint: call adapter [{$provider_id}] loginFinish() ");
$hauth->adapter->loginFinish();
} catch (Exception $e) {
Hybrid_Logger::error("Exception:" . $e->getMessage(), $e);
Hybrid_Error::setError($e->getMessage(), $e->getCode(), $e->getTraceAsString(), $e->getPrevious());
$hauth->adapter->setUserUnconnected();
}
Hybrid_Logger::info("Endpoint: job done. return to callback url.");
$hauth->returnToCallbackUrl();
die();
}
/**
* Initializes authentication
* @throws Hybrid_Exception
*/
protected function authInit() {
if (!$this->initDone) {
$this->initDone = true;
// Init Hybrid_Auth
try {
if (!class_exists("Hybrid_Storage", false)) {
require_once realpath(dirname(__FILE__)) . "/Storage.php";
}
if (!class_exists("Hybrid_Exception", false)) {
require_once realpath(dirname(__FILE__)) . "/Exception.php";
}
if (!class_exists("Hybrid_Logger", false)) {
require_once realpath(dirname(__FILE__)) . "/Logger.php";
}
$storage = new Hybrid_Storage();
// Check if Hybrid_Auth session already exist
if (!$storage->config("CONFIG")) {
throw new Hybrid_Exception("You cannot access this page directly.");
}
Hybrid_Auth::initialize($storage->config("CONFIG"));
} catch (Exception $e) {
Hybrid_Logger::error("Endpoint: Error while trying to init Hybrid_Auth: " . $e->getMessage());
throw new Hybrid_Exception( "Endpoint: Error while trying to init Hybrid_Auth: " . $e->getMessage(), $e->getCode(), $e );
}
}
}
}
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