1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
<?php
/**
* SPDX-FileCopyrightText: 2020-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
use OC\Files\Filesystem;
use OC\Files\Storage\Wrapper\PermissionsMask;
use OC\Files\View;
use OCA\DAV\Connector\Sabre\PublicAuth;
use OCA\DAV\Connector\Sabre\ServerFactory;
use OCA\DAV\Files\Sharing\FilesDropPlugin;
use OCA\DAV\Files\Sharing\PublicLinkCheckPlugin;
use OCA\DAV\Storage\PublicOwnerWrapper;
use OCA\DAV\Storage\PublicShareWrapper;
use OCA\FederatedFileSharing\FederatedShareProvider;
use OCP\BeforeSabrePubliclyLoadedEvent;
use OCP\Constants;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\Files\IRootFolder;
use OCP\Files\Mount\IMountManager;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\IPreview;
use OCP\IRequest;
use OCP\ISession;
use OCP\ITagManager;
use OCP\IUserSession;
use OCP\L10N\IFactory;
use OCP\Security\Bruteforce\IThrottler;
use OCP\Server;
use OCP\Share\IManager;
use Psr\Log\LoggerInterface;
use Sabre\DAV\Exception\NotAuthenticated;
use Sabre\DAV\Exception\NotFound;
// load needed apps
$RUNTIME_APPTYPES = ['filesystem', 'authentication', 'logging'];
OC_App::loadApps($RUNTIME_APPTYPES);
OC_Util::obEnd();
$session = Server::get(ISession::class);
$request = Server::get(IRequest::class);
$eventDispatcher = Server::get(IEventDispatcher::class);
$session->close();
$requestUri = $request->getRequestUri();
// Backends
$authBackend = new PublicAuth(
$request,
Server::get(IManager::class),
$session,
Server::get(IThrottler::class),
Server::get(LoggerInterface::class)
);
$authPlugin = new \Sabre\DAV\Auth\Plugin($authBackend);
$l10nFactory = Server::get(IFactory::class);
$serverFactory = new ServerFactory(
Server::get(IConfig::class),
Server::get(LoggerInterface::class),
Server::get(IDBConnection::class),
Server::get(IUserSession::class),
Server::get(IMountManager::class),
Server::get(ITagManager::class),
$request,
Server::get(IPreview::class),
$eventDispatcher,
$l10nFactory->get('dav'),
);
$linkCheckPlugin = new PublicLinkCheckPlugin();
$filesDropPlugin = new FilesDropPlugin();
// Define root url with /public.php/dav/files/TOKEN
/** @var string $baseuri defined in public.php */
preg_match('/(^files\/\w+)/i', substr($requestUri, strlen($baseuri)), $match);
$baseuri = $baseuri . $match[0];
$server = $serverFactory->createServer($baseuri, $requestUri, $authPlugin, function (\Sabre\DAV\Server $server) use ($authBackend, $linkCheckPlugin, $filesDropPlugin) {
// GET must be allowed for e.g. showing images and allowing Zip downloads
if ($server->httpRequest->getMethod() !== 'GET') {
// If this is *not* a GET request we only allow access to public DAV from AJAX or when Server2Server is allowed
$isAjax = in_array('XMLHttpRequest', explode(',', $_SERVER['HTTP_X_REQUESTED_WITH'] ?? ''));
$federatedShareProvider = Server::get(FederatedShareProvider::class);
if ($federatedShareProvider->isOutgoingServer2serverShareEnabled() === false && $isAjax === false) {
// this is what is thrown when trying to access a non-existing share
throw new NotAuthenticated();
}
}
$share = $authBackend->getShare();
$owner = $share->getShareOwner();
$isReadable = $share->getPermissions() & Constants::PERMISSION_READ;
$fileId = $share->getNodeId();
// FIXME: should not add storage wrappers outside of preSetup, need to find a better way
/** @psalm-suppress InternalMethod */
$previousLog = Filesystem::logWarningWhenAddingStorageWrapper(false);
/** @psalm-suppress MissingClosureParamType */
Filesystem::addStorageWrapper('sharePermissions', function ($mountPoint, $storage) use ($share) {
return new PermissionsMask(['storage' => $storage, 'mask' => $share->getPermissions() | Constants::PERMISSION_SHARE]);
});
/** @psalm-suppress MissingClosureParamType */
Filesystem::addStorageWrapper('shareOwner', function ($mountPoint, $storage) use ($share) {
return new PublicOwnerWrapper(['storage' => $storage, 'owner' => $share->getShareOwner()]);
});
// Ensure that also private shares have the `getShare` method
/** @psalm-suppress MissingClosureParamType */
Filesystem::addStorageWrapper('getShare', function ($mountPoint, $storage) use ($share) {
return new PublicShareWrapper(['storage' => $storage, 'share' => $share]);
}, 0);
/** @psalm-suppress InternalMethod */
Filesystem::logWarningWhenAddingStorageWrapper($previousLog);
$rootFolder = Server::get(IRootFolder::class);
$userFolder = $rootFolder->getUserFolder($owner);
$node = $userFolder->getFirstNodeById($fileId);
if (!$node) {
throw new NotFound();
}
$linkCheckPlugin->setFileInfo($node);
// If not readable (files_drop) enable the filesdrop plugin
if (!$isReadable) {
$filesDropPlugin->enable();
}
$view = new View($node->getPath());
$filesDropPlugin->setView($view);
$filesDropPlugin->setShare($share);
return $view;
});
$server->addPlugin($linkCheckPlugin);
$server->addPlugin($filesDropPlugin);
// allow setup of additional plugins
$event = new BeforeSabrePubliclyLoadedEvent($server);
$eventDispatcher->dispatchTyped($event);
// And off we go!
$server->start();
|
