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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.security;
import java.util.Properties;
import javax.security.auth.Subject;
import javax.servlet.ServletRequest;
import org.eclipse.jetty.server.UserIdentity;
import org.eclipse.jetty.util.B64Code;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.resource.Resource;
import org.ietf.jgss.GSSContext;
import org.ietf.jgss.GSSCredential;
import org.ietf.jgss.GSSException;
import org.ietf.jgss.GSSManager;
import org.ietf.jgss.GSSName;
import org.ietf.jgss.Oid;
public class SpnegoLoginService extends AbstractLifeCycle implements LoginService
{
private static final Logger LOG = Log.getLogger(SpnegoLoginService.class);
protected IdentityService _identityService;// = new LdapIdentityService();
protected String _name;
private String _config;
private String _targetName;
public SpnegoLoginService()
{
}
public SpnegoLoginService( String name )
{
setName(name);
}
public SpnegoLoginService( String name, String config )
{
setName(name);
setConfig(config);
}
@Override
public String getName()
{
return _name;
}
public void setName(String name)
{
if (isRunning())
{
throw new IllegalStateException("Running");
}
_name = name;
}
public String getConfig()
{
return _config;
}
public void setConfig( String config )
{
if (isRunning())
{
throw new IllegalStateException("Running");
}
_config = config;
}
@Override
protected void doStart() throws Exception
{
Properties properties = new Properties();
Resource resource = Resource.newResource(_config);
properties.load(resource.getInputStream());
_targetName = properties.getProperty("targetName");
LOG.debug("Target Name {}", _targetName);
super.doStart();
}
/**
* username will be null since the credentials will contain all the relevant info
*/
@Override
public UserIdentity login(String username, Object credentials, ServletRequest request)
{
String encodedAuthToken = (String)credentials;
byte[] authToken = B64Code.decode(encodedAuthToken);
GSSManager manager = GSSManager.getInstance();
try
{
Oid krb5Oid = new Oid("1.3.6.1.5.5.2"); // http://java.sun.com/javase/6/docs/technotes/guides/security/jgss/jgss-features.html
GSSName gssName = manager.createName(_targetName,null);
GSSCredential serverCreds = manager.createCredential(gssName,GSSCredential.INDEFINITE_LIFETIME,krb5Oid,GSSCredential.ACCEPT_ONLY);
GSSContext gContext = manager.createContext(serverCreds);
if (gContext == null)
{
LOG.debug("SpnegoUserRealm: failed to establish GSSContext");
}
else
{
while (!gContext.isEstablished())
{
authToken = gContext.acceptSecContext(authToken,0,authToken.length);
}
if (gContext.isEstablished())
{
String clientName = gContext.getSrcName().toString();
String role = clientName.substring(clientName.indexOf('@') + 1);
LOG.debug("SpnegoUserRealm: established a security context");
LOG.debug("Client Principal is: " + gContext.getSrcName());
LOG.debug("Server Principal is: " + gContext.getTargName());
LOG.debug("Client Default Role: " + role);
SpnegoUserPrincipal user = new SpnegoUserPrincipal(clientName,authToken);
Subject subject = new Subject();
subject.getPrincipals().add(user);
return _identityService.newUserIdentity(subject,user, new String[]{role});
}
}
}
catch (GSSException gsse)
{
LOG.warn(gsse);
}
return null;
}
@Override
public boolean validate(UserIdentity user)
{
return false;
}
@Override
public IdentityService getIdentityService()
{
return _identityService;
}
@Override
public void setIdentityService(IdentityService service)
{
_identityService = service;
}
@Override
public void logout(UserIdentity user)
{
// TODO Auto-generated method stub
}
}
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