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Refactoring of code base - modularized code, introduced configuration, started working on a PDO based DB connector

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This commit is contained in:
Simon Rupf 2012-04-29 19:15:06 +02:00
parent 241c75a5d5
commit ba90d0cae2
10 changed files with 1170 additions and 388 deletions
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111
lib/traffic_limiter.php Normal file
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<?php
/**
* ZeroBin
*
* a zero-knowledge paste bin
*
* @link http://sebsauvage.net/wiki/doku.php?id=php:zerobin
* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
* @license http://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
* @version 0.15
*/
/**
* traffic_limiter
*
* Handles traffic limiting, so no user does more than one call per 10 seconds.
*/
class traffic_limiter
{
/**
* @access private
* @static
* @var int
*/
private static $_limit = 10;
/**
* @access private
* @static
* @var string
*/
private static $_path = 'data';
/**
* set the time limit in seconds
*
* @access public
* @static
* @param int $limit
* @return void
*/
public static function setLimit($limit)
{
self::$_limit = $limit;
}
/**
* set the path
*
* @access public
* @static
* @param string $path
* @return void
*/
public static function setPath($path)
{
self::$_path = $path;
}
/**
* traffic limiter
*
* Make sure the IP address makes at most 1 request every 10 seconds.
*
* @access public
* @static
* @param string $ip
* @return bool
*/
public static function canPass($ip)
{
if (!is_dir(self::$_path)) mkdir(self::$_path, 0705, true);
$file = self::$_path . '/traffic_limiter.php';
if (!is_file($file))
{
file_put_contents(
$file,
'<?php' . PHP_EOL .
'$GLOBALS[\'traffic_limiter\'] = array();' . PHP_EOL
);
chmod($file, 0705);
}
require $file;
$tl = $GLOBALS['traffic_limiter'];
// purge file of expired IPs to keep it small
foreach($tl as $key => $time)
{
if ($time + 10 < time())
{
unset($tl[$key]);
}
}
if (array_key_exists($ip, $tl) && ($tl[$ip] + 10 >= time()))
{
$result = false;
} else {
$tl[$ip] = time();
$result = true;
}
file_put_contents(
$file,
'<?php' . PHP_EOL .
'$GLOBALS[\'traffic_limiter\'] = ' .
var_export($tl, true) . ';' . PHP_EOL
);
return $result;
}
}