2 * Copyright (C) 2007-2012 Argeo GmbH
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org
.argeo
.slc
.spring
;
18 import javax
.security
.auth
.Subject
;
19 import javax
.security
.auth
.login
.LoginContext
;
20 import javax
.security
.auth
.login
.LoginException
;
22 import org
.apache
.commons
.logging
.Log
;
23 import org
.apache
.commons
.logging
.LogFactory
;
24 import org
.argeo
.node
.NodeConstants
;
25 import org
.argeo
.slc
.SlcException
;
27 /** Provides base method for executing code with system authorization. */
28 abstract class AbstractSystemExecution
{
29 private final static Log log
= LogFactory
.getLog(AbstractSystemExecution
.class);
30 private final Subject subject
= new Subject();
32 /** Authenticate the calling thread */
33 protected void authenticateAsSystem() {
34 ClassLoader origClassLoader
= Thread
.currentThread().getContextClassLoader();
35 Thread
.currentThread().setContextClassLoader(getClass().getClassLoader());
37 LoginContext lc
= new LoginContext(NodeConstants
.LOGIN_CONTEXT_DATA_ADMIN
, subject
);
39 } catch (LoginException e
) {
40 throw new SlcException("Cannot login as system", e
);
42 Thread
.currentThread().setContextClassLoader(origClassLoader
);
44 if (log
.isTraceEnabled())
45 log
.trace("System authenticated");
48 protected void deauthenticateAsSystem() {
49 ClassLoader origClassLoader
= Thread
.currentThread().getContextClassLoader();
50 Thread
.currentThread().setContextClassLoader(getClass().getClassLoader());
52 LoginContext lc
= new LoginContext(NodeConstants
.LOGIN_CONTEXT_DATA_ADMIN
, subject
);
54 } catch (LoginException e
) {
55 throw new SlcException("Cannot logout as system", e
);
57 Thread
.currentThread().setContextClassLoader(origClassLoader
);
61 protected Subject
getSubject() {