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<?php declare(strict_types=1);
/**
* @copyright Copyright (c) 2019 Robin Appelman <robin@icewind.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\DocumentServer\Controller;
use OC\ForbiddenException;
use OC\Security\CSP\ContentSecurityPolicy;
use OC\Security\CSP\ContentSecurityPolicyNonceManager;
use OCA\DocumentServer\Channel\SessionManager;
use OCA\DocumentServer\Document\ConverterBinary;
use OCA\DocumentServer\FileResponse;
use OCA\DocumentServer\SetupCheck;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\NotFoundResponse;
use OCP\Files\IMimeTypeDetector;
use OCP\IRequest;
class StaticController extends Controller {
private $mimeTypeHelper;
private $nonceManager;
private $setupCheck;
private $sessionManager;
public function __construct(
$appName,
IRequest $request,
IMimeTypeDetector $mimeTypeHelper,
ContentSecurityPolicyNonceManager $nonceManager,
SetupCheck $setupCheck,
SessionManager $sessionManager
) {
parent::__construct($appName, $request);
$this->mimeTypeHelper = $mimeTypeHelper;
$this->nonceManager = $nonceManager;
$this->setupCheck = $setupCheck;
$this->sessionManager = $sessionManager;
}
/**
* @NoCSRFRequired
* @NoAdminRequired
* @PublicPage
*/
public function thirdparty(string $path) {
if (strpos($path, '..') !== false) {
throw new ForbiddenException();
}
$localPath = __DIR__ . '/../../3rdparty/onlyoffice/documentserver/' . $path;
return $this->createFileResponse($localPath);
}
/**
* @NoCSRFRequired
* @NoAdminRequired
* @PublicPage
*/
public function webApps(string $path) {
if (strpos($path, '..') !== false) {
throw new ForbiddenException();
}
$localPath = __DIR__ . '/../../3rdparty/onlyoffice/documentserver/web-apps/' . $path;
// onlyoffice will load this js file first
// we use this as an opportunity to do some checks and present error messages
// by serving a custom js file instead
if ($path === 'apps/api/documents/api.js') {
if (!$this->setupCheck->check()) {
$hint = $this->setupCheck->getHint();
$localPath = __DIR__ . '/../../js/binaryerror.js';
$rawContent = file_get_contents($localPath);
$content = str_replace('__HINT__', addcslashes($hint, "'"), $rawContent);
return $this->createFileResponseWithContent($localPath, $content, false);
} else if ($this->sessionManager->getSessionCount() >= 20) {
$localPath = __DIR__ . '/../../js/sessionlimit.js';
}
}
return $this->createFileResponse($localPath);
}
private function createFileResponse($path) {
if (!file_exists($path)) {
return new NotFoundResponse();
}
$content = file_get_contents($path);
return $this->createFileResponseWithContent($path, $content);
}
private function createFileResponseWithContent(string $path, string $content, $cache = true) {
$isHTML = pathinfo($path, PATHINFO_EXTENSION) === 'html';
if ($isHTML) {
$content = $this->addScriptNonce($content, $this->nonceManager->getNonce());
}
$mime = $this->mimeTypeHelper->detectPath($path);
if (pathinfo($path, PATHINFO_EXTENSION) === 'wasm') {
$mime = 'application/wasm';
}
$response = new FileResponse(
$content,
strlen($content),
filemtime($path),
$mime,
basename($path)
);
// we can't cache the html since the nonce might need to get updated
if ($cache && !$isHTML) {
$response->cacheFor(3600);
}
$csp = new ContentSecurityPolicy();
$csp->addAllowedScriptDomain($this->request->getServerHost());
$csp->addAllowedScriptDomain('\'unsafe-eval\'');
$csp->addAllowedScriptDomain('\'unsafe-inline\'');
$csp->addAllowedFrameDomain($this->request->getServerHost());
$response->setContentSecurityPolicy($csp);
return $response;
}
private function addScriptNonce(string $content, string $nonce): string {
return str_replace('<script', "<script nonce=\"$nonce\"", $content);
}
/**
* @NoCSRFRequired
* @NoAdminRequired
* @PublicPage
*/
public function pluginsJSON() {
return "[]";
}
}
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