PrivateBin/lib/Persistence/DataStore.php

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<?php
/**
* PrivateBin
*
* a zero-knowledge paste bin
*
* @link https://github.com/PrivateBin/PrivateBin
* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
* @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
* @version 1.1
*/
namespace PrivateBin\Persistence;
use Exception;
use PrivateBin\Json;
/**
* DataStore
*
* Handles data storage for Data\Filesystem.
*/
class DataStore extends AbstractPersistence
{
/**
* first line in file, to protect its contents
*
* @const string
*/
const PROTECTION_LINE = '<?php http_response_code(403); /*';
/**
* store the data
*
* @access public
* @static
* @param string $filename
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* @param array $data
* @return bool
*/
public static function store($filename, $data)
{
$path = self::getPath();
if (strpos($filename, $path) === 0) {
$filename = substr($filename, strlen($path));
}
try {
self::_store(
$filename,
self::PROTECTION_LINE . PHP_EOL . Json::encode($data)
);
return true;
} catch (Exception $e) {
return false;
}
}
/**
* get the data
*
* @access public
* @static
* @param string $filename
* @return array|false $data
*/
public static function get($filename)
{
return Json::decode(
substr(
file_get_contents($filename),
strlen(self::PROTECTION_LINE . PHP_EOL)
)
);
}
/**
* rename a file, prepending the protection line at the beginning
*
* @access public
* @static
* @param string $srcFile
* @param string $destFile
* @param string $prefix (optional)
* @return void
*/
public static function prependRename($srcFile, $destFile, $prefix = '')
{
// don't overwrite already converted file
if (!is_readable($destFile)) {
$handle = fopen($srcFile, 'r', false, stream_context_create());
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file_put_contents($destFile, $prefix . self::PROTECTION_LINE . PHP_EOL);
file_put_contents($destFile, $handle, FILE_APPEND);
fclose($handle);
}
unlink($srcFile);
}
}