/*
JSPWiki - a JSP-based WikiWiki clone.
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
*/
package com.ecyrd.jspwiki.auth.login;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.FailedLoginException;
import javax.security.auth.login.LoginException;
import org.apache.log4j.Logger;
import com.ecyrd.jspwiki.auth.NoSuchPrincipalException;
import com.ecyrd.jspwiki.auth.WikiPrincipal;
import com.ecyrd.jspwiki.auth.user.UserDatabase;
import com.ecyrd.jspwiki.auth.user.UserProfile;
/**
* <p>
* Logs in a user based on a username, password, and static password file
* location. This module must be used with a CallbackHandler (such as
* {@link WikiCallbackHandler}) that supports the following Callback types:
* </p>
* <ol>
* <li>{@link javax.security.auth.callback.NameCallback}- supplies the
* username</li>
* <li>{@link javax.security.auth.callback.PasswordCallback}- supplies the
* password</li>
* <li>{@link com.ecyrd.jspwiki.auth.login.UserDatabaseCallback}- supplies the
* {@link com.ecyrd.jspwiki.auth.user.UserDatabase}</li>
* </ol>
* <p>
* After authentication, a Principals based on the login name will be created
* and associated with the Subject.
* </p>
* @author Andrew Jaquith
* @since 2.3
*/
public class UserDatabaseLoginModule extends AbstractLoginModule
{
private static final Logger log = Logger.getLogger( UserDatabaseLoginModule.class );
/**
* @see javax.security.auth.spi.LoginModule#login()
*
* {@inheritDoc}
*/
public boolean login() throws LoginException
{
UserDatabaseCallback ucb = new UserDatabaseCallback();
NameCallback ncb = new NameCallback( "User name" );
PasswordCallback pcb = new PasswordCallback( "Password", false );
Callback[] callbacks = new Callback[]
{ ucb, ncb, pcb };
try
{
m_handler.handle( callbacks );
UserDatabase db = ucb.getUserDatabase();
String username = ncb.getName();
String password = new String( pcb.getPassword() );
// Look up the user and compare the password hash
if ( db == null )
{
throw new FailedLoginException( "No user database: check the callback handler code!" );
}
UserProfile profile = db.findByLoginName( username );
String storedPassword = profile.getPassword();
if ( storedPassword != null && db.validatePassword( username, password ) )
{
if ( log.isDebugEnabled() )
{
log.debug( "Logged in user database user " + username );
}
// If login succeeds, commit these principals/roles
m_principals.add( new WikiPrincipal( username, WikiPrincipal.LOGIN_NAME ) );
return true;
}
throw new FailedLoginException( "The username or password is incorrect." );
}
catch( IOException e )
{
String message = "IO exception; disallowing login.";
log.error( message, e );
throw new LoginException( message );
}
catch( UnsupportedCallbackException e )
{
String message = "Unable to handle callback; disallowing login.";
log.error( message, e );
throw new LoginException( message );
}
catch( NoSuchPrincipalException e )
{
throw new FailedLoginException( "The username or password is incorrect." );
}
}
}