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
|
<?php
/**
* ownCloud - App Framework
*
* @author Bernhard Posselt
* @copyright 2012 Bernhard Posselt <dev@bernhard-posselt.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\AppFramework\Middleware\Security;
use OC\AppFramework\Http;
use OC\AppFramework\Utility\ControllerMethodReflector;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Middleware;
use OCP\AppFramework\Http\Response;
use OCP\AppFramework\Http\JSONResponse;
use OCP\INavigationManager;
use OCP\IURLGenerator;
use OCP\IRequest;
use OCP\ILogger;
use OCP\AppFramework\Controller;
use OCP\Util;
/**
* Used to do all the authentication and checking stuff for a controller method
* It reads out the annotations of a controller method and checks which if
* security things should be checked and also handles errors in case a security
* check fails
*/
class SecurityMiddleware extends Middleware {
private $navigationManager;
private $request;
private $reflector;
private $appName;
private $urlGenerator;
private $logger;
private $isLoggedIn;
private $isAdminUser;
/**
* @param IRequest $request
* @param ControllerMethodReflector $reflector
* @param INavigationManager $navigationManager
* @param IURLGenerator $urlGenerator
* @param ILogger $logger
* @param string $appName
* @param bool $isLoggedIn
* @param bool $isAdminUser
*/
public function __construct(IRequest $request,
ControllerMethodReflector $reflector,
INavigationManager $navigationManager,
IURLGenerator $urlGenerator,
ILogger $logger,
$appName,
$isLoggedIn,
$isAdminUser){
$this->navigationManager = $navigationManager;
$this->request = $request;
$this->reflector = $reflector;
$this->appName = $appName;
$this->urlGenerator = $urlGenerator;
$this->logger = $logger;
$this->isLoggedIn = $isLoggedIn;
$this->isAdminUser = $isAdminUser;
}
/**
* This runs all the security checks before a method call. The
* security checks are determined by inspecting the controller method
* annotations
* @param string $controller the controllername or string
* @param string $methodName the name of the method
* @throws SecurityException when a security check fails
*/
public function beforeController($controller, $methodName){
// this will set the current navigation entry of the app, use this only
// for normal HTML requests and not for AJAX requests
$this->navigationManager->setActiveEntry($this->appName);
// security checks
$isPublicPage = $this->reflector->hasAnnotation('PublicPage');
if(!$isPublicPage) {
if(!$this->isLoggedIn) {
throw new SecurityException('Current user is not logged in', Http::STATUS_UNAUTHORIZED);
}
if(!$this->reflector->hasAnnotation('NoAdminRequired')) {
if(!$this->isAdminUser) {
throw new SecurityException('Logged in user must be an admin', Http::STATUS_FORBIDDEN);
}
}
}
// CSRF check - also registers the CSRF token since the session may be closed later
Util::callRegister();
if(!$this->reflector->hasAnnotation('NoCSRFRequired')) {
if(!$this->request->passesCSRFCheck()) {
throw new SecurityException('CSRF check failed', Http::STATUS_PRECONDITION_FAILED);
}
}
/**
* FIXME: Use DI once available
* Checks if app is enabled (also inclues a check whether user is allowed to access the resource)
* The getAppPath() check is here since components such as settings also use the AppFramework and
* therefore won't pass this check.
*/
if(\OC_App::getAppPath($this->appName) !== false && !\OC_App::isEnabled($this->appName)) {
throw new SecurityException('App is not enabled', Http::STATUS_PRECONDITION_FAILED);
}
}
/**
* If an SecurityException is being caught, ajax requests return a JSON error
* response and non ajax requests redirect to the index
* @param Controller $controller the controller that is being called
* @param string $methodName the name of the method that will be called on
* the controller
* @param \Exception $exception the thrown exception
* @throws \Exception the passed in exception if it cant handle it
* @return Response a Response object or null in case that the exception could not be handled
*/
public function afterException($controller, $methodName, \Exception $exception){
if($exception instanceof SecurityException){
if (stripos($this->request->getHeader('Accept'),'html')===false) {
$response = new JSONResponse(
array('message' => $exception->getMessage()),
$exception->getCode()
);
$this->logger->debug($exception->getMessage());
} else {
// TODO: replace with link to route
$url = $this->urlGenerator->getAbsoluteURL('index.php');
// add redirect URL to redirect to the previous page after login
$url .= '?redirect_url=' . urlencode($this->request->server['REQUEST_URI']);
$response = new RedirectResponse($url);
$this->logger->debug($exception->getMessage());
}
return $response;
}
throw $exception;
}
}
|
