/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.domain.management.security;
import static org.jboss.as.domain.management.DomainManagementMessages.MESSAGES;
import static org.jboss.as.domain.management.RealmConfigurationConstants.SUBJECT_CALLBACK_SUPPORTED;
import static org.jboss.as.domain.management.RealmConfigurationConstants.VERIFY_PASSWORD_CALLBACK_SUPPORTED;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import javax.security.sasl.AuthorizeCallback;
import javax.security.sasl.RealmCallback;
import org.jboss.as.controller.security.ServerSecurityManager;
import org.jboss.as.domain.management.AuthenticationMechanism;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.jboss.sasl.callback.VerifyPasswordCallback;
/**
* A CallbackHandler verifying users usernames and passwords by using a JAAS LoginContext.
*
* @author <a href="mailto:darran.lofthouse@jboss.com">Darran Lofthouse</a>
*/
public class JaasCallbackHandler implements Service<CallbackHandlerService>, CallbackHandlerService, CallbackHandler {
public static final String SERVICE_SUFFIX = "jaas";
private static final Map<String, String> configurationOptions;
static {
Map<String, String> temp = new HashMap<String, String>(2);
temp.put(SUBJECT_CALLBACK_SUPPORTED, Boolean.TRUE.toString());
temp.put(VERIFY_PASSWORD_CALLBACK_SUPPORTED, Boolean.TRUE.toString());
configurationOptions = Collections.unmodifiableMap(temp);
}
private final String name;
private final InjectedValue<ServerSecurityManager> securityManagerValue = new InjectedValue<ServerSecurityManager>();
public JaasCallbackHandler(final String name) {
this.name = name;
}
/*
* CallbackHandlerService Methods
*/
public AuthenticationMechanism getPreferredMechanism() {
return AuthenticationMechanism.PLAIN;
}
public Set<AuthenticationMechanism> getSupplementaryMechanisms() {
return Collections.emptySet();
}
public Map<String, String> getConfigurationOptions() {
return configurationOptions;
}
public CallbackHandler getCallbackHandler(Map<String, Object> sharedState) {
return this;
}
public boolean isReady() {
return true;
}
/*
* CallbackHandler Method
*/
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
if (callbacks.length == 1 && callbacks[0] instanceof AuthorizeCallback) {
AuthorizeCallback acb = (AuthorizeCallback) callbacks[0];
String authenticationId = acb.getAuthenticationID();
String authorizationId = acb.getAuthorizationID();
acb.setAuthorized(authenticationId.equals(authorizationId));
return;
}
NameCallback nameCallBack = null;
VerifyPasswordCallback verifyPasswordCallback = null;
SubjectCallback subjectCallback = null;
for (Callback current : callbacks) {
if (current instanceof NameCallback) {
nameCallBack = (NameCallback) current;
} else if (current instanceof RealmCallback) {
} else if (current instanceof VerifyPasswordCallback) {
verifyPasswordCallback = (VerifyPasswordCallback) current;
} else if (current instanceof SubjectCallback) {
subjectCallback = (SubjectCallback) current;
} else {
throw new UnsupportedCallbackException(current);
}
}
if (nameCallBack == null) {
throw MESSAGES.noUsername();
}
final String userName = nameCallBack.getDefaultName();
if (userName == null || userName.length() == 0) {
throw MESSAGES.noUsername();
}
if (verifyPasswordCallback == null || verifyPasswordCallback.getPassword() == null) {
throw MESSAGES.noPassword();
}
final char[] password = verifyPasswordCallback.getPassword().toCharArray();
Subject subject = subjectCallback != null && subjectCallback.getSubject() != null ? subjectCallback.getSubject()
: new Subject();
ServerSecurityManager securityManager;
if ((securityManager = securityManagerValue.getOptionalValue()) != null) {
try {
securityManager.push(name, userName, password, subject);
verifyPasswordCallback.setVerified(true);
subject.getPrivateCredentials().add(new PasswordCredential(userName, password));
if (subjectCallback != null) {
// Only want to deliberately pass it back if authentication completed.
subjectCallback.setSubject(subject);
}
} catch (SecurityException e) {
verifyPasswordCallback.setVerified(false);
} finally {
securityManager.pop();
}
} else {
try {
LoginContext ctx = new LoginContext(name, subject, new CallbackHandler() {
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
for (Callback current : callbacks) {
if (current instanceof NameCallback) {
NameCallback ncb = (NameCallback) current;
ncb.setName(userName);
} else if (current instanceof PasswordCallback) {
PasswordCallback pcb = (PasswordCallback) current;
pcb.setPassword(password);
} else {
throw new UnsupportedCallbackException(current);
}
}
}
});
ctx.login();
verifyPasswordCallback.setVerified(true);
subject.getPrivateCredentials().add(new PasswordCredential(userName, password));
if (subjectCallback != null) {
// Only want to deliberately pass it back if authentication completed.
subjectCallback.setSubject(subject);
}
} catch (LoginException e) {
verifyPasswordCallback.setVerified(false);
}
}
}
/*
* Service Methods
*/
public void start(final StartContext context) throws StartException {
}
public void stop(final StopContext context) {
}
public InjectedValue<ServerSecurityManager> getSecurityManagerValue() {
return securityManagerValue;
}
public CallbackHandlerService getValue() throws IllegalStateException, IllegalArgumentException {
return this;
}
}