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<?php |
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/** |
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* This file is part of the tiqr project. |
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* |
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* The tiqr project aims to provide an open implementation for |
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* authentication using mobile devices. It was initiated by |
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* SURFnet and developed by Egeniq. |
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* |
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* More information: http://www.tiqr.org |
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* |
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* @author Ivo Jansch <[email protected]> |
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* |
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* @package tiqr |
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* |
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* @license New BSD License - See LICENSE file for details. |
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* |
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* @copyright (C) 2010-2011 SURFnet BV |
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*/ |
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/** |
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* File based implementation to store session state data. |
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* Note that it is more secure to use a memory based storage such as memcached. |
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* This implementation is mostly for demo, test or experimental setups that |
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* do not have access to a memcache instance. |
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* |
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* This StateStorage implementation has no options, files are always stored |
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* in /tmp and prefixed with tiqr_state_* |
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* |
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* @author ivo |
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* |
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*/ |
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class Tiqr_StateStorage_File extends Tiqr_StateStorage_Abstract |
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{ |
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/** |
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* (non-PHPdoc) |
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* @see library/tiqr/Tiqr/StateStorage/Tiqr_StateStorage_Abstract::setValue() |
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*/ |
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public function setValue($key, $value, $expire=0) |
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{ |
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$envelope = array("expire"=>$expire, |
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"createdAt"=>time(), |
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"value"=>$value); |
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$filename = $this->_stateFilename($key); |
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file_put_contents($filename, serialize($envelope)); |
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return $key; |
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} |
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/** |
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* (non-PHPdoc) |
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* @see library/tiqr/Tiqr/StateStorage/Tiqr_StateStorage_Abstract::unsetValue() |
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*/ |
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public function unsetValue($key) |
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{ |
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$filename = $this->_stateFilename($key); |
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if (file_exists($filename)) { |
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unlink($filename); |
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} |
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} |
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/** |
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* (non-PHPdoc) |
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* @see library/tiqr/Tiqr/StateStorage/Tiqr_StateStorage_Abstract::getValue() |
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*/ |
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public function getValue($key) |
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{ |
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$filename = $this->_stateFilename($key); |
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if (file_exists($filename)) { |
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$envelope = unserialize(file_get_contents($filename)); |
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if ($envelope["expire"]!=0) { |
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// This data is time-limited. If it's too old we discard it. |
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if (time()-$envelope["createdAt"] > $envelope["expire"]) { |
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$this->unsetValue($key); |
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return NULL; |
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} |
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} |
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return $envelope["value"]; |
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} |
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return NULL; |
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} |
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/** |
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* Determine the name of a temporary file to hold the contents of $key |
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* @param String $key The key for which to store data. |
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*/ |
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protected function _stateFilename($key) |
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{ |
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return "/tmp/tiqr_state_".strtr(base64_encode($key), '+/', '-_'); |
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} |
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} |
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Tiqr /
tiqr-server-libphp
