71 lines
1.9 KiB
PHP
71 lines
1.9 KiB
PHP
|
<?php
|
|||
|
|
|
|||
|
|
namespace Kirby\Sane;
|
|||
|
|
|
|||
|
|
use Kirby\Exception\InvalidArgumentException;
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Sane handler for gzip-compressed SVGZ files
|
|||
|
|
* @since 3.5.4
|
|||
|
|
*
|
|||
|
|
* @package Kirby Sane
|
|||
|
|
* @author Lukas Bestle <lukas@getkirby.com>
|
|||
|
|
* @link https://getkirby.com
|
|||
|
|
* @copyright Bastian Allgeier
|
|||
|
|
* @license https://opensource.org/licenses/MIT
|
|||
|
|
*/
|
|||
|
|
class Svgz extends Svg
|
|||
|
|
{
|
|||
|
|
/**
|
|||
|
|
* Sanitizes the given string
|
|||
|
|
*
|
|||
|
|
* @param bool $isExternal Whether the string is from an external file
|
|||
|
|
* that may be accessed directly
|
|||
|
|
*
|
|||
|
|
* @throws \Kirby\Exception\InvalidArgumentException If the file couldn't be parsed or recompressed
|
|||
|
|
*/
|
|||
|
|
public static function sanitize(string $string, bool $isExternal = false): string
|
|||
|
|
{
|
|||
|
|
$string = static::uncompress($string);
|
|||
|
|
$string = parent::sanitize($string, $isExternal);
|
|||
|
|
$string = @gzencode($string);
|
|||
|
|
|
|||
|
|
if (is_string($string) !== true) {
|
|||
|
|
throw new InvalidArgumentException('Could not recompress gzip data'); // @codeCoverageIgnore
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return $string;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Validates file contents
|
|||
|
|
*
|
|||
|
|
* @param bool $isExternal Whether the string is from an external file
|
|||
|
|
* that may be accessed directly
|
|||
|
|
*
|
|||
|
|
* @throws \Kirby\Exception\InvalidArgumentException If the file couldn't be parsed
|
|||
|
|
* @throws \Kirby\Exception\InvalidArgumentException If the file didn't pass validation
|
|||
|
|
*/
|
|||
|
|
public static function validate(string $string, bool $isExternal = false): void
|
|||
|
|
{
|
|||
|
|
$string = static::uncompress($string);
|
|||
|
|
parent::validate($string, $isExternal);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Uncompresses the SVGZ data
|
|||
|
|
*/
|
|||
|
|
protected static function uncompress(string $string): string
|
|||
|
|
{
|
|||
|
|
// only support uncompressed files up to 10 MB to
|
|||
|
|
// prevent gzip bombs from crashing the process
|
|||
|
|
$string = @gzdecode($string, 10000000);
|
|||
|
|
|
|||
|
|
if (is_string($string) !== true) {
|
|||
|
|
throw new InvalidArgumentException('Could not uncompress gzip data');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return $string;
|
|||
|
|
}
|
|||
|
|
}
|