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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Georg Ehrke <oc.list@georgehrke.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\DAV\DAV\Sharing;
use OCA\DAV\Connector\Sabre\Auth;
use OCA\DAV\DAV\Sharing\Xml\Invite;
use OCA\DAV\DAV\Sharing\Xml\ShareRequest;
use OCP\IRequest;
use Sabre\DAV\Exception\NotFound;
use Sabre\DAV\INode;
use Sabre\DAV\PropFind;
use Sabre\DAV\Server;
use Sabre\DAV\ServerPlugin;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;
class Plugin extends ServerPlugin {
const NS_OWNCLOUD = 'http://owncloud.org/ns';
const NS_NEXTCLOUD = 'http://nextcloud.com/ns';
/** @var Auth */
private $auth;
/** @var IRequest */
private $request;
/**
* Plugin constructor.
*
* @param Auth $authBackEnd
* @param IRequest $request
*/
public function __construct(Auth $authBackEnd, IRequest $request) {
$this->auth = $authBackEnd;
$this->request = $request;
}
/**
* Reference to SabreDAV server object.
*
* @var \Sabre\DAV\Server
*/
protected $server;
/**
* This method should return a list of server-features.
*
* This is for example 'versioning' and is added to the DAV: header
* in an OPTIONS response.
*
* @return string[]
*/
function getFeatures() {
return ['oc-resource-sharing'];
}
/**
* Returns a plugin name.
*
* Using this name other plugins will be able to access other plugins
* using Sabre\DAV\Server::getPlugin
*
* @return string
*/
function getPluginName() {
return 'oc-resource-sharing';
}
/**
* This initializes the plugin.
*
* This function is called by Sabre\DAV\Server, after
* addPlugin is called.
*
* This method should set up the required event subscriptions.
*
* @param Server $server
* @return void
*/
function initialize(Server $server) {
$this->server = $server;
$this->server->xml->elementMap['{' . Plugin::NS_OWNCLOUD . '}share'] = ShareRequest::class;
$this->server->xml->elementMap['{' . Plugin::NS_OWNCLOUD . '}invite'] = Invite::class;
$this->server->on('method:POST', [$this, 'httpPost']);
$this->server->on('propFind', [$this, 'propFind']);
}
/**
* We intercept this to handle POST requests on a dav resource.
*
* @param RequestInterface $request
* @param ResponseInterface $response
* @return null|false
*/
function httpPost(RequestInterface $request, ResponseInterface $response) {
$path = $request->getPath();
// Only handling xml
$contentType = $request->getHeader('Content-Type');
if (strpos($contentType, 'application/xml') === false && strpos($contentType, 'text/xml') === false) {
return;
}
// Making sure the node exists
try {
$node = $this->server->tree->getNodeForPath($path);
} catch (NotFound $e) {
return;
}
$requestBody = $request->getBodyAsString();
// If this request handler could not deal with this POST request, it
// will return 'null' and other plugins get a chance to handle the
// request.
//
// However, we already requested the full body. This is a problem,
// because a body can only be read once. This is why we preemptively
// re-populated the request body with the existing data.
$request->setBody($requestBody);
$message = $this->server->xml->parse($requestBody, $request->getUrl(), $documentType);
switch ($documentType) {
// Dealing with the 'share' document, which modified invitees on a
// calendar.
case '{' . self::NS_OWNCLOUD . '}share':
// We can only deal with IShareableCalendar objects
if (!$node instanceof IShareable) {
return;
}
$this->server->transactionType = 'post-oc-resource-share';
// Getting ACL info
$acl = $this->server->getPlugin('acl');
// If there's no ACL support, we allow everything
if ($acl) {
/** @var \Sabre\DAVACL\Plugin $acl */
$acl->checkPrivileges($path, '{DAV:}write');
}
$node->updateShares($message->set, $message->remove);
$response->setStatus(200);
// Adding this because sending a response body may cause issues,
// and I wanted some type of indicator the response was handled.
$response->setHeader('X-Sabre-Status', 'everything-went-well');
// Breaking the event chain
return false;
}
}
/**
* This event is triggered when properties are requested for a certain
* node.
*
* This allows us to inject any properties early.
*
* @param PropFind $propFind
* @param INode $node
* @return void
*/
function propFind(PropFind $propFind, INode $node) {
if ($node instanceof IShareable) {
$propFind->handle('{' . Plugin::NS_OWNCLOUD . '}invite', function () use ($node) {
return new Invite(
$node->getShares()
);
});
}
}
}
|
