01: /*
02: * JBoss, Home of Professional Open Source
03: * Copyright 2005, JBoss Inc., and individual contributors as indicated
04: * by the @authors tag. See the copyright.txt in the distribution for a
05: * full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jbpm.security.authentication;
23:
24: import java.security.AccessController;
25: import java.security.Principal;
26: import java.util.Set;
27:
28: import javax.security.auth.Subject;
29:
30: import org.jbpm.JbpmConfiguration;
31: import org.jbpm.security.AuthenticationService;
32: import org.jbpm.util.ClassLoaderUtil;
33:
34: /**
35: * gets the authenticated actor id from the current Subject.
36: * This Authenticator requires another configuration parameter
37: * 'jbpm.authenticator.principal.classname'. This configuration property
38: * specifies the class name of the principal that should be used from
39: * the current subject. The name of that principal is used as the
40: * currently authenticated actorId.
41: */
42: public class SubjectAuthenticationService implements
43: AuthenticationService {
44:
45: private static final long serialVersionUID = 1L;
46:
47: private static final String principalClassName = JbpmConfiguration.Configs
48: .getString("jbpm.authenticator.principal.classname");
49: private static Class principalClass = ClassLoaderUtil
50: .loadClass(principalClassName);
51:
52: public String getActorId() {
53: String authenticatedActorId = null;
54: Subject subject = Subject.getSubject(AccessController
55: .getContext());
56: Set principals = subject.getPrincipals(principalClass);
57: if ((principals != null) && (!principals.isEmpty())) {
58: Principal principal = (Principal) principals.iterator()
59: .next();
60: authenticatedActorId = principal.getName();
61: }
62: return authenticatedActorId;
63: }
64:
65: public void close() {
66: }
67: }
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