6db01ef1db76c335f69c42810d932df75b095e09
[Packages/TYPO3.CMS.git] / typo3 / sysext / core / Classes / Controller / FileDumpController.php
1 <?php
2 namespace TYPO3\CMS\Core\Controller;
3
4 /*
5 * This file is part of the TYPO3 CMS project.
6 *
7 * It is free software; you can redistribute it and/or modify it under
8 * the terms of the GNU General Public License, either version 2
9 * of the License, or any later version.
10 *
11 * For the full copyright and license information, please read the
12 * LICENSE.txt file that was distributed with this source code.
13 *
14 * The TYPO3 project - inspiring people to share!
15 */
16
17 use Psr\Http\Message\ResponseInterface;
18 use Psr\Http\Message\ServerRequestInterface;
19 use TYPO3\CMS\Core\Resource\Hook\FileDumpEIDHookInterface;
20 use TYPO3\CMS\Core\Resource\ProcessedFileRepository;
21 use TYPO3\CMS\Core\Resource\ResourceFactory;
22 use TYPO3\CMS\Core\Utility\GeneralUtility;
23 use TYPO3\CMS\Core\Utility\HttpUtility;
24
25 /**
26 * Class FileDumpController
27 */
28 class FileDumpController
29 {
30 /**
31 * Main method to dump a file
32 *
33 * @param ServerRequestInterface $request
34 * @param ResponseInterface $response
35 * @return NULL|ResponseInterface
36 *
37 * @throws \InvalidArgumentException
38 * @throws \RuntimeException
39 * @throws \TYPO3\CMS\Core\Resource\Exception\FileDoesNotExistException
40 * @throws \UnexpectedValueException
41 */
42 public function dumpAction(ServerRequestInterface $request, ResponseInterface $response)
43 {
44 $parameters = array('eID' => 'dumpFile');
45 $t = $this->getGetOrPost($request, 't');
46 if ($t) {
47 $parameters['t'] = $t;
48 }
49 $f = $this->getGetOrPost($request, 'f');
50 if ($f) {
51 $parameters['f'] = $f;
52 }
53 $p = $this->getGetOrPost($request, 'p');
54 if ($p) {
55 $parameters['p'] = $p;
56 }
57
58 if (GeneralUtility::hmac(implode('|', $parameters), 'resourceStorageDumpFile') === $this->getGetOrPost($request, 'token')) {
59 if (isset($parameters['f'])) {
60 $file = ResourceFactory::getInstance()->getFileObject($parameters['f']);
61 if ($file->isDeleted() || $file->isMissing()) {
62 $file = null;
63 }
64 } else {
65 $file = GeneralUtility::makeInstance(ProcessedFileRepository::class)->findByUid($parameters['p']);
66 if ($file->isDeleted()) {
67 $file = null;
68 }
69 }
70
71 if ($file === null) {
72 HttpUtility::setResponseCodeAndExit(HttpUtility::HTTP_STATUS_404);
73 }
74
75 // Hook: allow some other process to do some security/access checks. Hook should issue 403 if access is rejected
76 if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['FileDumpEID.php']['checkFileAccess'])) {
77 foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['FileDumpEID.php']['checkFileAccess'] as $classRef) {
78 $hookObject = GeneralUtility::getUserObj($classRef);
79 if (!$hookObject instanceof FileDumpEIDHookInterface) {
80 throw new \UnexpectedValueException('FileDump hook object must implement interface ' . FileDumpEIDHookInterface::class, 1394442417);
81 }
82 $hookObject->checkFileAccess($file);
83 }
84 }
85 $file->getStorage()->dumpFileContents($file);
86 // @todo Refactor FAL to not echo directly, but to implement a stream for output here and use response
87 return null;
88 } else {
89 return $response->withStatus(403);
90 }
91 }
92
93 /**
94 * @param ServerRequestInterface $request
95 * @param string $parameter
96 * @return NULL|mixed
97 */
98 protected function getGetOrPost(ServerRequestInterface $request, $parameter)
99 {
100 return isset($request->getParsedBody()[$parameter])
101 ? $request->getParsedBody()[$parameter]
102 : (isset($request->getQueryParams()[$parameter]) ? $request->getQueryParams()[$parameter] : null);
103 }
104 }