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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_OpenId
* @subpackage Zend_OpenId_Consumer
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: File.php 16212 2009-06-21 19:24:49Z thomas $
*/
/**
* @see Zend_OpenId_Consumer_Storage
*/
require_once "Zend/OpenId/Consumer/Storage.php";
/**
* External storage implemmentation using serialized files
*
* @category Zend
* @package Zend_OpenId
* @subpackage Zend_OpenId_Consumer
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_OpenId_Consumer_Storage_File extends Zend_OpenId_Consumer_Storage
{
/**
* Directory name to store data files in
*
* @var string $_dir
*/
private $_dir;
/**
* Constructs storage object and creates storage directory
*
* @param string $dir directory name to store data files in
* @throws Zend_OpenId_Exception
*/
public function __construct($dir = null)
{
if ($dir === null) {
$tmp = getenv('TMP');
if (empty($tmp)) {
$tmp = getenv('TEMP');
if (empty($tmp)) {
$tmp = "/tmp";
}
}
$user = get_current_user();
if (is_string($user) && !empty($user)) {
$tmp .= '/' . $user;
}
$dir = $tmp . '/openid/consumer';
}
$this->_dir = $dir;
if (!is_dir($this->_dir)) {
if (!@mkdir($this->_dir, 0700, 1)) {
/**
* @see Zend_OpenId_Exception
*/
require_once 'Zend/OpenId/Exception.php';
throw new Zend_OpenId_Exception(
'Cannot access storage directory ' . $dir,
Zend_OpenId_Exception::ERROR_STORAGE);
}
}
if (($f = fopen($this->_dir.'/assoc.lock', 'w+')) === null) {
/**
* @see Zend_OpenId_Exception
*/
require_once 'Zend/OpenId/Exception.php';
throw new Zend_OpenId_Exception(
'Cannot create a lock file in the directory ' . $dir,
Zend_OpenId_Exception::ERROR_STORAGE);
}
fclose($f);
if (($f = fopen($this->_dir.'/discovery.lock', 'w+')) === null) {
/**
* @see Zend_OpenId_Exception
*/
require_once 'Zend/OpenId/Exception.php';
throw new Zend_OpenId_Exception(
'Cannot create a lock file in the directory ' . $dir,
Zend_OpenId_Exception::ERROR_STORAGE);
}
fclose($f);
if (($f = fopen($this->_dir.'/nonce.lock', 'w+')) === null) {
/**
* @see Zend_OpenId_Exception
*/
require_once 'Zend/OpenId/Exception.php';
throw new Zend_OpenId_Exception(
'Cannot create a lock file in the directory ' . $dir,
Zend_OpenId_Exception::ERROR_STORAGE);
}
fclose($f);
}
/**
* Stores information about association identified by $url/$handle
*
* @param string $url OpenID server URL
* @param string $handle assiciation handle
* @param string $macFunc HMAC function (sha1 or sha256)
* @param string $secret shared secret
* @param long $expires expiration UNIX time
* @return bool
*/
public function addAssociation($url, $handle, $macFunc, $secret, $expires)
{
$name1 = $this->_dir . '/assoc_url_' . md5($url);
$name2 = $this->_dir . '/assoc_handle_' . md5($handle);
$lock = @fopen($this->_dir . '/assoc.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name1, 'w+');
if ($f === false) {
fclose($lock);
return false;
}
$data = serialize(array($url, $handle, $macFunc, $secret, $expires));
fwrite($f, $data);
if (function_exists('symlink')) {
@unlink($name2);
if (symlink($name1, $name2)) {
fclose($f);
fclose($lock);
return true;
}
}
$f2 = @fopen($name2, 'w+');
if ($f2) {
fwrite($f2, $data);
fclose($f2);
@unlink($name1);
$ret = true;
} else {
$ret = false;
}
fclose($f);
fclose($lock);
return $ret;
}
/**
* Gets information about association identified by $url
* Returns true if given association found and not expired and false
* otherwise
*
* @param string $url OpenID server URL
* @param string &$handle assiciation handle
* @param string &$macFunc HMAC function (sha1 or sha256)
* @param string &$secret shared secret
* @param long &$expires expiration UNIX time
* @return bool
*/
public function getAssociation($url, &$handle, &$macFunc, &$secret, &$expires)
{
$name1 = $this->_dir . '/assoc_url_' . md5($url);
$lock = @fopen($this->_dir . '/assoc.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name1, 'r');
if ($f === false) {
fclose($lock);
return false;
}
$ret = false;
$data = stream_get_contents($f);
if (!empty($data)) {
list($storedUrl, $handle, $macFunc, $secret, $expires) = unserialize($data);
if ($url === $storedUrl && $expires > time()) {
$ret = true;
} else {
$name2 = $this->_dir . '/assoc_handle_' . md5($handle);
fclose($f);
@unlink($name2);
@unlink($name1);
fclose($lock);
return false;
}
}
fclose($f);
fclose($lock);
return $ret;
}
/**
* Gets information about association identified by $handle
* Returns true if given association found and not expired and false
* otherwise
*
* @param string $handle assiciation handle
* @param string &$url OpenID server URL
* @param string &$macFunc HMAC function (sha1 or sha256)
* @param string &$secret shared secret
* @param long &$expires expiration UNIX time
* @return bool
*/
public function getAssociationByHandle($handle, &$url, &$macFunc, &$secret, &$expires)
{
$name2 = $this->_dir . '/assoc_handle_' . md5($handle);
$lock = @fopen($this->_dir . '/assoc.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name2, 'r');
if ($f === false) {
fclose($lock);
return false;
}
$ret = false;
$data = stream_get_contents($f);
if (!empty($data)) {
list($url, $storedHandle, $macFunc, $secret, $expires) = unserialize($data);
if ($handle === $storedHandle && $expires > time()) {
$ret = true;
} else {
fclose($f);
@unlink($name2);
$name1 = $this->_dir . '/assoc_url_' . md5($url);
@unlink($name1);
fclose($lock);
return false;
}
}
fclose($f);
fclose($lock);
return $ret;
}
/**
* Deletes association identified by $url
*
* @param string $url OpenID server URL
* @return bool
*/
public function delAssociation($url)
{
$name1 = $this->_dir . '/assoc_url_' . md5($url);
$lock = @fopen($this->_dir . '/assoc.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name1, 'r');
if ($f === false) {
fclose($lock);
return false;
}
$data = stream_get_contents($f);
if (!empty($data)) {
list($storedUrl, $handle, $macFunc, $secret, $expires) = unserialize($data);
if ($url === $storedUrl) {
$name2 = $this->_dir . '/assoc_handle_' . md5($handle);
fclose($f);
@unlink($name2);
@unlink($name1);
fclose($lock);
return true;
}
}
fclose($f);
fclose($lock);
return true;
}
/**
* Stores information discovered from identity $id
*
* @param string $id identity
* @param string $realId discovered real identity URL
* @param string $server discovered OpenID server URL
* @param float $version discovered OpenID protocol version
* @param long $expires expiration UNIX time
* @return bool
*/
public function addDiscoveryInfo($id, $realId, $server, $version, $expires)
{
$name = $this->_dir . '/discovery_' . md5($id);
$lock = @fopen($this->_dir . '/discovery.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name, 'w+');
if ($f === false) {
fclose($lock);
return false;
}
$data = serialize(array($id, $realId, $server, $version, $expires));
fwrite($f, $data);
fclose($f);
fclose($lock);
return true;
}
/**
* Gets information discovered from identity $id
* Returns true if such information exists and false otherwise
*
* @param string $id identity
* @param string &$realId discovered real identity URL
* @param string &$server discovered OpenID server URL
* @param float &$version discovered OpenID protocol version
* @param long &$expires expiration UNIX time
* @return bool
*/
public function getDiscoveryInfo($id, &$realId, &$server, &$version, &$expires)
{
$name = $this->_dir . '/discovery_' . md5($id);
$lock = @fopen($this->_dir . '/discovery.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name, 'r');
if ($f === false) {
fclose($lock);
return false;
}
$ret = false;
$data = stream_get_contents($f);
if (!empty($data)) {
list($storedId, $realId, $server, $version, $expires) = unserialize($data);
if ($id === $storedId && $expires > time()) {
$ret = true;
} else {
fclose($f);
@unlink($name);
fclose($lock);
return false;
}
}
fclose($f);
fclose($lock);
return $ret;
}
/**
* Removes cached information discovered from identity $id
*
* @param string $id identity
* @return bool
*/
public function delDiscoveryInfo($id)
{
$name = $this->_dir . '/discovery_' . md5($id);
$lock = @fopen($this->_dir . '/discovery.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
@unlink($name);
fclose($lock);
return true;
}
/**
* The function checks the uniqueness of openid.response_nonce
*
* @param string $provider openid.openid_op_endpoint field from authentication response
* @param string $nonce openid.response_nonce field from authentication response
* @return bool
*/
public function isUniqueNonce($provider, $nonce)
{
$name = $this->_dir . '/nonce_' . md5($provider.';'.$nonce);
$lock = @fopen($this->_dir . '/nonce.lock', 'w+');
if ($lock === false) {
return false;
}
if (!flock($lock, LOCK_EX)) {
fclose($lock);
return false;
}
$f = @fopen($name, 'x');
if ($f === false) {
fclose($lock);
return false;
}
fwrite($f, $provider.';'.$nonce);
fclose($f);
fclose($lock);
return true;
}
/**
* Removes data from the uniqueness database that is older then given date
*
* @param mixed $date date of expired data
*/
public function purgeNonces($date=null)
{
$lock = @fopen($this->_dir . '/nonce.lock', 'w+');
if ($lock !== false) {
flock($lock, LOCK_EX);
}
if (!is_int($date) && !is_string($date)) {
foreach (glob($this->_dir . '/nonce_*') as $name) {
@unlink($name);
}
} else {
if (is_string($date)) {
$time = time($date);
} else {
$time = $date;
}
foreach (glob($this->_dir . '/nonce_*') as $name) {
if (filemtime($name) < $time) {
@unlink($name);
}
}
}
if ($lock !== false) {
fclose($lock);
}
}
}
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