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<?php
declare(strict_types=1);
namespace OCA\Checksum\Controller;
use OC\User\NoUserException;
use OCA\Checksum\AppInfo\Application;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\JSONResponse;
use OCP\Files\FileInfo;
use OCP\Files\IRootFolder;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\IL10N;
use OCP\IRequest;
use OCP\IUserSession;
use OCP\L10N\IFactory;
class ChecksumController extends Controller {
/**
* @var IL10N
*/
private $language;
/**
* @var IRootFolder
*/
private $rootFolder;
/**
* @var IUserSession
*/
private $userSession;
/**
* ChecksumController constructor.
*
* @param string $appName
* @param IRequest $request
* @param IFactory $languageFactory
* @param IRootFolder $rootFolder
* @param IUserSession $userSession
*/
public function __construct(
string $appName,
IRequest $request,
IFactory $languageFactory,
IRootFolder $rootFolder,
IUserSession $userSession
) {
parent::__construct($appName, $request);
$this->language = $languageFactory->get(Application::APP_ID);
$this->rootFolder = $rootFolder;
$this->userSession = $userSession;
}
/**
* Compute the hash of a file.
*
* @NoAdminRequired
* @param string $source file path relative to user home
* @param string $type hash algorithm
* @return JSONResponse
*/
public function check(string $source, string $type): JSONResponse {
if (!$this->checkAlgorithmType($type)) {
return new JSONResponse(
[
'response' => 'error',
'msg' => $this->language->t(
'The algorithm type "%s" is not a valid or supported algorithm type.',
[$type]
)
]
);
}
$hash = $this->getHash($source, $type);
if ($hash) {
return new JSONResponse(
[
'response' => 'success',
'msg' => $hash
]
);
}
return new JSONResponse(
[
'response' => 'error',
'msg' => $this->language->t('File not found.')
]
);
}
private function getHash(string $source, string $type): ?string {
$user = $this->userSession->getUser();
if (!$user) {
return null;
}
try {
$home = $this->rootFolder->getUserFolder($user->getUID());
/** @var \OC\Files\Node\File $node */
$node = $home->get($source);
} catch (NotPermittedException | NoUserException | NotFoundException $e) {
return null;
}
if ($node->getType() !== FileInfo::TYPE_FILE) {
return null;
}
$file = $node->fopen('rb');
$hash = hash_init($type);
hash_update_stream($hash, $file);
fclose($file);
return hash_final($hash);
}
private function checkAlgorithmType(string $type): bool {
return in_array($type, $this->getAllowedAlgorithmTypes()) && in_array($type, hash_algos());
}
/**
* @return array<string>
*/
private function getAllowedAlgorithmTypes(): array {
return [
'md5',
'sha1',
'sha256',
'sha384',
'sha512',
'crc32',
'crc32b'
];
}
}
|
