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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Form\Mvc\Validation;
use TYPO3\CMS\Core\Resource\File;
use TYPO3\CMS\Core\Resource\MimeTypeDetector;
use TYPO3\CMS\Extbase\Domain\Model\FileReference;
use TYPO3\CMS\Extbase\Validation\Validator\AbstractValidator;
use TYPO3\CMS\Form\Mvc\Property\TypeConverter\PseudoFile;
use TYPO3\CMS\Form\Mvc\Validation\Exception\InvalidValidationOptionsException;
/**
* Validator for mime types
*
* Scope: frontend
*/
final class MimeTypeValidator extends AbstractValidator
{
/**
* @var array
*/
protected $supportedOptions = [
'allowedMimeTypes' => [null, 'Allowed mime types (using */* IANA media types)', 'array', true],
];
/**
* The given $value is valid if it is a FileReference of the
* configured type (one of the IANA media types)
*
* Note: a value of NULL or empty string ('') is considered valid
*
* @param FileReference|File|PseudoFile $resource The resource that should be validated
*/
public function isValid(mixed $resource): void
{
$this->validateOptions();
if ($resource instanceof FileReference) {
$mimeType = $resource->getOriginalResource()->getMimeType();
$fileExtension = $resource->getOriginalResource()->getExtension();
} elseif ($resource instanceof File) {
$mimeType = $resource->getMimeType();
$fileExtension = $resource->getExtension();
} elseif ($resource instanceof PseudoFile) {
$mimeType = $resource->getMimeType();
$fileExtension = $resource->getExtension();
} else {
$this->addError(
$this->translateErrorMessage(
'validation.error.1471708997',
'form'
),
1471708997
);
return;
}
$allowedMimeTypes = $this->options['allowedMimeTypes'];
if (!in_array($mimeType, $allowedMimeTypes, true)) {
$this->addError(
$this->translateErrorMessage(
'validation.error.1471708998',
'form',
[$mimeType]
),
1471708998,
[$mimeType]
);
} else {
// The mime-type which was detected by FAL matches, but the file name does not match.
// Example: myfile.txt is actually a PDF file (defined by mime-type), but .txt is not associated
// for application/pdf, so this is not valid. The file extension of the uploaded file must match
// the mime-type for this file.
$assumedMimesTypeOfFileExtension = (new MimeTypeDetector())->getMimeTypesForFileExtension($fileExtension);
if (empty(array_intersect($allowedMimeTypes, $assumedMimesTypeOfFileExtension))) {
$this->addError(
$this->translateErrorMessage(
'validation.error.1613126216',
'form',
[$fileExtension]
),
1613126216,
[$fileExtension]
);
}
}
}
/**
* Checks if this validator is correctly configured
*
* @throws InvalidValidationOptionsException if the configured validation options are incorrect
*/
protected function validateOptions(): void
{
if (!is_array($this->options['allowedMimeTypes'] ?? false) || $this->options['allowedMimeTypes'] === []) {
throw new InvalidValidationOptionsException('The option "allowedMimeTypes" must be an array with at least one item.', 1471713296);
}
}
}