Posted inUncategorized

php xxs temizleme

June 14, 2012

php xxs temizleme çok kaliteli ve işe yarar..

javascriptle bulaşacak tüm zararlı kodları temizler

bu siteden tüm testleri yapabilirsiniz

function xss_clean($str)
	{

		if (is_array($str) OR is_object($str))
		{
			foreach ($str as $k => $s)
			{
				$str[$k] = xss_clean($s);
			}

			return $str;
		}

		// Remove all NULL bytes
		$str = str_replace("", '', $str);

		// Fix &entityn;
		$str = str_replace(array('&',''), array('&','<','>'), $str);
		$str = preg_replace('/(*w+)[x00-x20]+;/u', '$1;', $str);
		$str = preg_replace('/(*[0-9A-F]+);*/iu', '$1;', $str);
		//$str = html_entity_decode($str, ENT_COMPAT, $charset); //org
$str = html_entity_decode($str, ENT_COMPAT);
		// Remove any attribute starting with "on" or xmlns
		$str = preg_replace('#(?:on[a-z]+|xmlns)s*=s*['"x00-x20]?[^'>"]*['"x00-x20]?s?#iu', '', $str);

		// Remove javascript: and vbscript: protocols
		$str = preg_replace('#([a-z]*)[x00-x20]*=[x00-x20]*([`'"]*)[x00-x20]*j[x00-x20]*a[x00-x20]*v[x00-x20]*a[x00-x20]*s[x00-x20]*c[x00-x20]*r[x00-x20]*i[x00-x20]*p[x00-x20]*t[x00-x20]*:#iu', '$1=$2nojavascript...', $str);
		$str = preg_replace('#([a-z]*)[x00-x20]*=(['"]*)[x00-x20]*v[x00-x20]*b[x00-x20]*s[x00-x20]*c[x00-x20]*r[x00-x20]*i[x00-x20]*p[x00-x20]*t[x00-x20]*:#iu', '$1=$2novbscript...', $str);
		$str = preg_replace('#([a-z]*)[x00-x20]*=(['"]*)[x00-x20]*-moz-binding[x00-x20]*:#u', '$1=$2nomozbinding...', $str);

		// Only works in IE: 
		$str = preg_replace('#(]+?)style[x00-x20]*=[x00-x20]*[`'"]*.*?expression[x00-x20]*([^>]*+>#is', '$1>', $str);
		$str = preg_replace('#(]+?)style[x00-x20]*=[x00-x20]*[`'"]*.*?behaviour[x00-x20]*([^>]*+>#is', '$1>', $str);
		$str = preg_replace('#(]+?)style[x00-x20]*=[x00-x20]*[`'"]*.*?s[x00-x20]*c[x00-x20]*r[x00-x20]*i[x00-x20]*p[x00-x20]*t[x00-x20]*:*[^>]*+>#ius', '$1>', $str);

		// Remove namespaced elements (we do not need them)
		$str = preg_replace('#]*+>#i', '', $str);

		do
		{
			// Remove really unwanted tags
			$old = $str;
			$str = preg_replace('#]*+>#i', '', $str);
		}
		while ($old !== $str);

		return $str;
	}
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