Source Code Cross Referenced for IdentityLoginModule.java in  » Workflow-Engines » jbpm-jpdl-3.2.2 » org » jbpm » identity » security » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » jbpm jpdl 3.2.2 » org.jbpm.identity.security 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * JBoss, Home of Professional Open Source
003:         * Copyright 2005, JBoss Inc., and individual contributors as indicated
004:         * by the @authors tag. See the copyright.txt in the distribution for a
005:         * full listing of individual contributors.
006:         *
007:         * This is free software; you can redistribute it and/or modify it
008:         * under the terms of the GNU Lesser General Public License as
009:         * published by the Free Software Foundation; either version 2.1 of
010:         * the License, or (at your option) any later version.
011:         *
012:         * This software is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015:         * Lesser General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this software; if not, write to the Free
019:         * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021:         */
022:        package org.jbpm.identity.security;
023:
024:        import java.util.*;
025:        import javax.security.auth.*;
026:        import javax.security.auth.callback.*;
027:        import javax.security.auth.login.*;
028:        import javax.security.auth.spi.*;
029:        import org.jbpm.identity.*;
030:
031:        /**
032:         * jaas login module that, in case of successfull verification, adds the 
033:         * {@link org.jbpm.identity.User} as a principal to the subject.  In case 
034:         * of successfull verification, the {@link Username} and {@link Password}
035:         * will be associated as public and private credentials respectively.
036:         */
037:        public class IdentityLoginModule implements  LoginModule {
038:
039:            Subject subject = null;
040:            CallbackHandler callbackHandler = null;
041:            Map sharedState = null;
042:            Map options = null;
043:
044:            /**
045:             * @inject
046:             */
047:            IdentityService identityService = null;
048:
049:            Object validatedUserId = null;
050:            String validatedPwd = null;
051:
052:            public void initialize(Subject subject,
053:                    CallbackHandler callbackHandler, Map sharedState,
054:                    Map options) {
055:                this .subject = subject;
056:                this .callbackHandler = callbackHandler;
057:                this .sharedState = sharedState;
058:                this .options = options;
059:            }
060:
061:            public boolean login() throws LoginException {
062:
063:                // get userName and password
064:                NameCallback nameCallback = new NameCallback(null);
065:                PasswordCallback passwordCallback = new PasswordCallback(null,
066:                        false);
067:                try {
068:                    callbackHandler.handle(new Callback[] { nameCallback,
069:                            passwordCallback });
070:                } catch (Exception e) {
071:                    e.printStackTrace();
072:                    throw new LoginException("callback failed");
073:                }
074:                String userName = nameCallback.getName();
075:                String pwd = new String(passwordCallback.getPassword());
076:
077:                // validate the userName and password with the injected identity session
078:                Object userId = identityService.verify(userName, pwd);
079:
080:                boolean success = (userId != null);
081:                // if userName matched the given password
082:                if (success) {
083:                    // save the user id and the password in the 
084:                    // private state of this loginmodule
085:                    validatedUserId = userId;
086:                    validatedPwd = pwd;
087:                } else {
088:                    validatedUserId = null;
089:                    validatedPwd = null;
090:                }
091:
092:                return success;
093:            }
094:
095:            public boolean commit() throws LoginException {
096:
097:                User user = identityService.getUserById(validatedUserId);
098:                if (user == null) {
099:                    throw new LoginException("no user for validated user id '"
100:                            + validatedUserId);
101:                }
102:
103:                // update the subject
104:                subject.getPrincipals().add(user);
105:                subject.getPrivateCredentials().add(
106:                        new Username(user.getName()));
107:                subject.getPrivateCredentials().add(new Password(validatedPwd));
108:
109:                // and update the authenticated user
110:                AuthenticatedUser.setAuthenticatedUser(user);
111:
112:                return true;
113:            }
114:
115:            public boolean abort() throws LoginException {
116:                return logout();
117:            }
118:
119:            public boolean logout() throws LoginException {
120:                if (subject != null) {
121:                    // TODO can we clear all or should this login module only clear the user it
122:                    // has added to the set of principals in the commit ?
123:                    subject.getPrincipals().clear();
124:                    subject.getPublicCredentials().clear();
125:                    subject.getPrivateCredentials().clear();
126:                }
127:
128:                // and update the authenticated user
129:                AuthenticatedUser.setAuthenticatedUser(null);
130:
131:                callbackHandler = null;
132:                sharedState = null;
133:                options = null;
134:                validatedUserId = null;
135:                validatedPwd = null;
136:                return true;
137:            }
138:        }
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