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eFaps is a framework used to map objects with or without attached files to
a relational database and optional file systems (only for attaches files). Configurable access control can be provided down to object and attribute level depending on implementation and use case. Depending on requirements, events (like triggers) allow to implement business logic and to separate business logic from user interface.
The framework includes integrations (e.g. webdav, full text search) and a web application as 'simple' configurable user interface. Some best practises, example web application modules (e.g. team work module) support administrators and implementers using this framework.
/*
* Copyright 2003 - 2011 The eFaps Team
*
* Licensed 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.
*
* Revision: $Rev: 6210 $
* Last Changed: $Date: 2011-02-18 16:02:56 -0500 (Fri, 18 Feb 2011) $
* Last Changed By: $Author: [email protected] $
*/
package org.efaps.jaas;
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.TextOutputCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This is class is used to handle the interface between JAAS and eFaps that
* enables a User to change his Password
* To be able to change the Passwordx the name and password of the user method
* {@link #checkLogin} could be used to test if the user is allowed to login.
* The method returns then the related person to the given name and password (if
* found) or null (if not found)
*
* @author The eFaps Team
* @version $Id: SetPasswordHandler.java 6210 2011-02-18 21:02:56Z [email protected] $
*/
public class SetPasswordHandler
{
/**
* Logging instance used to give logging information of this class.
*/
private static Logger LOG = LoggerFactory.getLogger(SetPasswordHandler.class);
/**
* The name of the application used to create a new login context. The
* default value is eFaps.
*/
private String application = "eFaps";
/**
* Constructor to initialize the setpassword handler. If null is
* given to the application name, the default value defined in
* {@link #application} is used.
*
* @param _application application name of the JAAS configuration
*/
public SetPasswordHandler(final String _application)
{
if (_application != null) {
this.application = _application;
}
}
/**
* Set the password.
* @param _name Username
* @param _newpasswd new passowrd
* @param _oldpasswd old passowrd
* @return true if successful
* @throws LoginException on error
*/
public boolean setPassword(final String _name,
final String _newpasswd,
final String _oldpasswd)
throws LoginException
{
boolean ret = false;
final LoginContext login = new LoginContext(
this.application,
new SetPasswordCallbackHandler(ActionCallback.Mode.SET_PASSWORD, _name, _newpasswd, _oldpasswd));
login.login();
ret = true;
return ret;
}
/**
* Callbackhandler.
*/
protected class SetPasswordCallbackHandler
implements CallbackHandler
{
/**
* The user name to test is stored in this instance variable.
*/
private final String name;
/**
* The new password used from the user is stored in this instance variable.
*/
private final String newpassword;
/**
* The action mode for which the login must be made is stored in this
* instance variable (e.g. login, information about all persons, etc.)
*/
private final ActionCallback.Mode mode;
/**
* The old password used from the user is stored in this instance variable.
*/
private final String oldpassword;
/**
* Constructor initializing the action, name and password in this call back
* handler.
*
* @param _mode defines mode for which the login is made
* @param _name name of the login user
* @param _newpasswd new password for the user
* @param _oldpasswd old password
* password of the login user
* @see #action
* @see #name
* @see #newpassword
*/
protected SetPasswordCallbackHandler(final ActionCallback.Mode _mode,
final String _name,
final String _newpasswd,
final String _oldpasswd)
{
this.mode = _mode;
this.name = _name;
this.oldpassword = _oldpasswd;
this.newpassword = _newpasswd;
}
/**
* hanlde the callbacks.
* @param _callbacks callbacks to be handled
* @throws UnsupportedCallbackException on error
*/
public void handle(final Callback[] _callbacks)
throws UnsupportedCallbackException
{
for (int i = 0; i < _callbacks.length; i++) {
if (_callbacks[i] instanceof ActionCallback) {
final ActionCallback ac = (ActionCallback) _callbacks[i];
ac.setMode(this.mode);
} else if (_callbacks[i] instanceof NameCallback) {
final NameCallback nc = (NameCallback) _callbacks[i];
nc.setName(this.name);
} else if (_callbacks[i] instanceof PasswordCallback) {
final PasswordCallback pc = (PasswordCallback) _callbacks[i];
if ("Password".equals(pc.getPrompt()) && this.oldpassword != null) {
pc.setPassword(this.oldpassword.toCharArray());
}
if ("newPassword".equals(pc.getPrompt()) && this.newpassword != null) {
pc.setPassword(this.newpassword.toCharArray());
}
} else if (_callbacks[i] instanceof TextOutputCallback) {
SetPasswordHandler.LOG.debug("ignored handler: " + _callbacks[i]);
// do nothing, TextOutputCallBack's are ignored!
} else {
throw new UnsupportedCallbackException(_callbacks[i], "Unrecognized Callback");
}
}
}
}
}