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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Gdata
* @subpackage Gdata
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: AuthSub.php 24593 2012-01-05 20:35:02Z matthew $
*/
/**
* Zend_Gdata_HttpClient
*/
require_once 'Zend/Gdata/HttpClient.php';
/**
* Zend_Version
*/
require_once 'Zend/Version.php';
/**
* Wrapper around Zend_Http_Client to facilitate Google's "Account Authentication
* Proxy for Web-Based Applications".
*
* @see http://code.google.com/apis/accounts/AuthForWebApps.html
*
* @category Zend
* @package Zend_Gdata
* @subpackage Gdata
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Gdata_AuthSub
{
const AUTHSUB_REQUEST_URI = 'https://www.google.com/accounts/AuthSubRequest';
const AUTHSUB_SESSION_TOKEN_URI = 'https://www.google.com/accounts/AuthSubSessionToken';
const AUTHSUB_REVOKE_TOKEN_URI = 'https://www.google.com/accounts/AuthSubRevokeToken';
const AUTHSUB_TOKEN_INFO_URI = 'https://www.google.com/accounts/AuthSubTokenInfo';
/**
* Creates a URI to request a single-use AuthSub token.
*
* @param string $next (required) URL identifying the service to be
* accessed.
* The resulting token will enable access to the specified service only.
* Some services may limit scope further, such as read-only access.
* @param string $scope (required) URL identifying the service to be
* accessed. The resulting token will enable
* access to the specified service only.
* Some services may limit scope further, such
* as read-only access.
* @param int $secure (optional) Boolean flag indicating whether the
* authentication transaction should issue a secure
* token (1) or a non-secure token (0). Secure tokens
* are available to registered applications only.
* @param int $session (optional) Boolean flag indicating whether
* the one-time-use token may be exchanged for
* a session token (1) or not (0).
* @param string $request_uri (optional) URI to which to direct the
* authentication request.
*/
public static function getAuthSubTokenUri($next, $scope, $secure=0, $session=0,
$request_uri = self::AUTHSUB_REQUEST_URI)
{
$querystring = '?next=' . urlencode($next)
. '&scope=' . urldecode($scope)
. '&secure=' . urlencode($secure)
. '&session=' . urlencode($session);
return $request_uri . $querystring;
}
/**
* Upgrades a single use token to a session token
*
* @param string $token The single use token which is to be upgraded
* @param Zend_Http_Client $client (optional) HTTP client to use to
* make the request
* @param string $request_uri (optional) URI to which to direct
* the session token upgrade
* @return string The upgraded token value
* @throws Zend_Gdata_App_AuthException
* @throws Zend_Gdata_App_HttpException
*/
public static function getAuthSubSessionToken(
$token, $client = null,
$request_uri = self::AUTHSUB_SESSION_TOKEN_URI)
{
$client = self::getHttpClient($token, $client);
if ($client instanceof Zend_Gdata_HttpClient) {
$filterResult = $client->filterHttpRequest('GET', $request_uri);
$url = $filterResult['url'];
$headers = $filterResult['headers'];
$client->setHeaders($headers);
$client->setUri($url);
} else {
$client->setUri($request_uri);
}
try {
$response = $client->request('GET');
} catch (Zend_Http_Client_Exception $e) {
require_once 'Zend/Gdata/App/HttpException.php';
throw new Zend_Gdata_App_HttpException($e->getMessage(), $e);
}
// Parse Google's response
if ($response->isSuccessful()) {
$goog_resp = array();
foreach (explode("\n", $response->getBody()) as $l) {
$l = chop($l);
if ($l) {
list($key, $val) = explode('=', chop($l), 2);
$goog_resp[$key] = $val;
}
}
return $goog_resp['Token'];
} else {
require_once 'Zend/Gdata/App/AuthException.php';
throw new Zend_Gdata_App_AuthException(
'Token upgrade failed. Reason: ' . $response->getBody());
}
}
/**
* Revoke a token
*
* @param string $token The token to revoke
* @param Zend_Http_Client $client (optional) HTTP client to use to make the request
* @param string $request_uri (optional) URI to which to direct the revokation request
* @return boolean Whether the revokation was successful
* @throws Zend_Gdata_App_HttpException
*/
public static function AuthSubRevokeToken($token, $client = null,
$request_uri = self::AUTHSUB_REVOKE_TOKEN_URI)
{
$client = self::getHttpClient($token, $client);
if ($client instanceof Zend_Gdata_HttpClient) {
$filterResult = $client->filterHttpRequest('GET', $request_uri);
$url = $filterResult['url'];
$headers = $filterResult['headers'];
$client->setHeaders($headers);
$client->setUri($url);
$client->resetParameters();
} else {
$client->setUri($request_uri);
}
ob_start();
try {
$response = $client->request('GET');
} catch (Zend_Http_Client_Exception $e) {
ob_end_clean();
require_once 'Zend/Gdata/App/HttpException.php';
throw new Zend_Gdata_App_HttpException($e->getMessage(), $e);
}
ob_end_clean();
// Parse Google's response
if ($response->isSuccessful()) {
return true;
} else {
return false;
}
}
/**
* get token information
*
* @param string $token The token to retrieve information about
* @param Zend_Http_Client $client (optional) HTTP client to use to
* make the request
* @param string $request_uri (optional) URI to which to direct
* the information request
*/
public static function getAuthSubTokenInfo(
$token, $client = null, $request_uri = self::AUTHSUB_TOKEN_INFO_URI)
{
$client = self::getHttpClient($token, $client);
if ($client instanceof Zend_Gdata_HttpClient) {
$filterResult = $client->filterHttpRequest('GET', $request_uri);
$url = $filterResult['url'];
$headers = $filterResult['headers'];
$client->setHeaders($headers);
$client->setUri($url);
} else {
$client->setUri($request_uri);
}
ob_start();
try {
$response = $client->request('GET');
} catch (Zend_Http_Client_Exception $e) {
ob_end_clean();
require_once 'Zend/Gdata/App/HttpException.php';
throw new Zend_Gdata_App_HttpException($e->getMessage(), $e);
}
ob_end_clean();
return $response->getBody();
}
/**
* Retrieve a HTTP client object with AuthSub credentials attached
* as the Authorization header
*
* @param string $token The token to retrieve information about
* @param Zend_Gdata_HttpClient $client (optional) HTTP client to use to make the request
*/
public static function getHttpClient($token, $client = null)
{
if ($client == null) {
$client = new Zend_Gdata_HttpClient();
}
if (!$client instanceof Zend_Gdata_HttpClient) {
require_once 'Zend/Gdata/App/HttpException.php';
throw new Zend_Gdata_App_HttpException('Client is not an instance of Zend_Gdata_HttpClient.');
}
$useragent = 'Zend_Framework_Gdata/' . Zend_Version::VERSION;
$client->setConfig(array(
'strictredirects' => true,
'useragent' => $useragent
)
);
$client->setAuthSubToken($token);
return $client;
}
}