<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation\File\MimeType;
use Symfony\Component\HttpFoundation\File\Exception\AccessDeniedException;
use Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException;
use Symfony\Component\Mime\FileBinaryMimeTypeGuesser as NewFileBinaryMimeTypeGuesser;
@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.3, use "%s" instead.', FileBinaryMimeTypeGuesser::class, NewFileBinaryMimeTypeGuesser::class), \E_USER_DEPRECATED);
/**
* Guesses the mime type with the binary "file" (only available on *nix).
*
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @deprecated since Symfony 4.3, use {@link NewFileBinaryMimeTypeGuesser} instead
*/
class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface
{
private $cmd;
/**
* The $cmd pattern must contain a "%s" string that will be replaced
* with the file name to guess.
*
* The command output must start with the mime type of the file.
*
* @param string $cmd The command to run to get the mime type of a file
*/
public function __construct(string $cmd = 'file -b --mime -- %s 2>/dev/null')
{
$this->cmd = $cmd;
}
/**
* Returns whether this guesser is supported on the current OS.
*
* @return bool
*/
public static function isSupported()
{
static $supported = null;
if (null !== $supported) {
return $supported;
}
if ('\\' === \DIRECTORY_SEPARATOR || !\function_exists('passthru') || !\function_exists('escapeshellarg')) {
return $supported = false;
}
ob_start();
passthru('command -v file', $exitStatus);
$binPath = trim(ob_get_clean());
return $supported = 0 === $exitStatus && '' !== $binPath;
}
/**
* {@inheritdoc}
*/
public function guess($path)
{
if (!is_file($path)) {
throw new FileNotFoundException($path);
}
if (!is_readable($path)) {
throw new AccessDeniedException($path);
}
if (!self::isSupported()) {
return null;
}
ob_start();
// need to use --mime instead of -i. see #6641
passthru(sprintf($this->cmd, escapeshellarg((str_starts_with($path, '-') ? './' : '').$path)), $return);
if ($return > 0) {
ob_end_clean();
return null;
}
$type = trim(ob_get_clean());
if (!preg_match('#^([a-z0-9\-]+/[a-z0-9\-\+\.]+)#i', $type, $match)) {
// it's not a type, but an error message
return null;
}
return $match[1];
}
}