TrustedClientPlugin.java
/*
** Module : TrustedClientPlugin.java
** Abstract : Custom authentication plugin that allows a user to be
** automatically logged in (without password!) by specifying the
** target user id when starting P2J client.
**
** Copyright (c) 2010-2017, Golden Code Development Corporation.
**
** -#- -I- --Date-- -------------------------------- Description --------------------------------
** 001 SVL 20100916 Created the initial version. Allows a user to be
** automatically logged in.
** 002 SVL 20100923 Changed to conform the new Authenticator API.
** 003 OM 20131018 Updated to conform the new Authenticator API.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program 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 Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
** Under Section 7 of the GNU Affero GPL version 3, the following additional
** terms apply to the works covered under the License. These additional terms
** are non-permissive additional terms allowed under Section 7 of the GNU
** Affero GPL version 3 and may not be removed by you.
**
** 0. Attribution Requirement.
**
** You must preserve all legal notices or author attributions in the covered
** work or Appropriate Legal Notices displayed by works containing the covered
** work. You may not remove from the covered work any author or developer
** credit already included within the covered work.
**
** 1. No License To Use Trademarks.
**
** This license does not grant any license or rights to use the trademarks
** Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
** of Golden Code Development Corporation. You are not authorized to use the
** name Golden Code, FWD, or the names of any author or contributor, for
** publicity purposes without written authorization.
**
** 2. No Misrepresentation of Affiliation.
**
** You may not represent yourself as Golden Code Development Corporation or FWD.
**
** You may not represent yourself for publicity purposes as associated with
** Golden Code Development Corporation, FWD, or any author or contributor to
** the covered work, without written authorization.
**
** 3. No Misrepresentation of Source or Origin.
**
** You may not represent the covered work as solely your work. All modified
** versions of the covered work must be marked in a reasonable way to make it
** clear that the modified work is not originating from Golden Code Development
** Corporation or FWD. All modified versions must contain the notices of
** attribution required in this license.
*/
package com.goldencode.p2j.security;
import com.goldencode.p2j.net.SessionListener;
import java.io.*;
import java.util.*;
/**
* Custom authentication plugin that allows a user to be automatically logged
* in (without password!) by specifiying the target user id when starting P2J
* client. An example: <code>./client.sh -u userid</code>
* <p>
* In order to be able to log in without password, this plugin should be
* specified as the auth plugin for the target users.
* <p>
* This plugin is **THE FORM OF DISABLING P2J SERVER'S SECURITY** for the
* given set of users.
*
*/
public class TrustedClientPlugin
implements Authenticator
{
/** The value of "option" node from AuthPlugin for this Authenticator */
private String authOption = null;
/**
* Implements client side custom authentication logic.
*
* @param parameters
* Additional configuration parameters. This plugin uses
* "subjectId" parameter which corresponds the name of the user
* account to be used.
* @param code
* Not used.
*
* @return Array of bytes to be transmitted to the server as the
* authorization input. Contains target user name.
*/
@Override
public byte[] clientAuthHook(Map<String, Object> parameters, int code)
{
String subjectId = "";
if (parameters != null)
subjectId = (String) parameters.get("subjectId");
if (subjectId == null)
subjectId = "";
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(bos);
try
{
dos.writeUTF(subjectId);
}
catch (IOException ioe)
{
return new byte[0];
}
return bos.toByteArray();
}
/**
* Finalizes any resources allocated during authentication by the client.
*/
@Override
public void clientFinalize()
{
}
/**
* Implements server side custom authentication logic.
* <p>
* Accepts the byte array produced by the client side authentication hook
* as authentication input and custom parameters.
*
* @param auth
* The authorization input from the client.
* @param entity
* The entity to be authenticated. Not used.
*
* @return The result of the authentication processing.
*/
@Override
public AuthenticationResponse serverAuthHook(byte[] auth, String entity)
{
// parse the byte array input
ByteArrayInputStream bis = new ByteArrayInputStream(auth);
DataInputStream dis = new DataInputStream(bis);
String userId;
try
{
userId = dis.readUTF();
}
catch (IOException ioe)
{
return new AuthenticationResponse(null, AUTH_RESULT_UNSPECIFIED_FAILURE);
}
// validation of account type and auth method (common for all plugins)
// will be performed into SecurityManager.runCustomServerHook
return new AuthenticationResponse(userId, AUTH_RESULT_SUCCESS);
}
/**
* Always returns <code>null</code>.
*
* @return Always <code>null</code>.
*/
@Override
public SessionListener getSessionListener()
{
return null;
}
/**
* Returns a set of entities that this class handles. The list of entities / parameters will
* be configured using other ways.
*
* @return A set with the value of option that was configured or an empty set if option was
* not configured.
*/
@Override
public Set<String> getAuthenticationEntities()
{
Set<String> ret = new HashSet<>();
if (authOption != null)
{
ret.add(authOption);
}
return ret;
}
/**
* Configures the Authenticator by setting the "option" parameter from directory.xml.
*
* @param option
* The value of "option" entry for the auth plugin.
*/
@Override
public void configure(String option)
{
this.authOption = option;
}
}