<?php
/**
* @see https://github.com/laminas/laminas-validator for the canonical source repository
* @copyright https://github.com/laminas/laminas-validator/blob/master/COPYRIGHT.md
* @license https://github.com/laminas/laminas-validator/blob/master/LICENSE.md New BSD License
*/
namespace Laminas\Validator\File;
use finfo;
use Laminas\Validator\File\FileInformationTrait;
/**
* Validator for the mime type of a file
*/
class ExcludeMimeType extends MimeType
{
use FileInformationTrait;
const FALSE_TYPE = 'fileExcludeMimeTypeFalse';
const NOT_DETECTED = 'fileExcludeMimeTypeNotDetected';
const NOT_READABLE = 'fileExcludeMimeTypeNotReadable';
/**
* @var array Error message templates
*/
protected $messageTemplates = [
self::FALSE_TYPE => "File has an incorrect mimetype of '%type%'",
self::NOT_DETECTED => "The mimetype could not be detected from the file",
self::NOT_READABLE => "File is not readable or does not exist",
];
/**
* Returns true if the mimetype of the file does not matche the given ones. Also parts
* of mimetypes can be checked. If you give for example "image" all image
* mime types will not be accepted like "image/gif", "image/jpeg" and so on.
*
* @param string|array $value Real file to check for mimetype
* @param array $file File data from \Laminas\File\Transfer\Transfer (optional)
* @return bool
*/
public function isValid($value, $file = null)
{
$fileInfo = $this->getFileInfo($value, $file, true);
$this->setValue($fileInfo['filename']);
// Is file readable ?
if (empty($fileInfo['file']) || false === is_readable($fileInfo['file'])) {
$this->error(self::NOT_READABLE);
return false;
}
$mimefile = $this->getMagicFile();
if (class_exists('finfo', false)) {
if (! $this->isMagicFileDisabled() && (! empty($mimefile) && empty($this->finfo))) {
$this->finfo = finfo_open(FILEINFO_MIME_TYPE, $mimefile);
}
if (empty($this->finfo)) {
$this->finfo = finfo_open(FILEINFO_MIME_TYPE);
}
$this->type = null;
if (! empty($this->finfo)) {
$this->type = finfo_file($this->finfo, $fileInfo['file']);
}
}
if (empty($this->type) && $this->getHeaderCheck()) {
$this->type = $fileInfo['filetype'];
}
if (empty($this->type)) {
$this->error(self::NOT_DETECTED);
return false;
}
$mimetype = $this->getMimeType(true);
if (in_array($this->type, $mimetype)) {
$this->error(self::FALSE_TYPE);
return false;
}
$types = explode('/', $this->type);
$types = array_merge($types, explode('-', $this->type));
$types = array_merge($types, explode(';', $this->type));
foreach ($mimetype as $mime) {
if (in_array($mime, $types)) {
$this->error(self::FALSE_TYPE);
return false;
}
}
return true;
}
}