/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, 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.identity.federation.bindings.tomcat.sp;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URLEncoder;
import java.security.GeneralSecurityException;
import java.security.PrivateKey;
import javax.xml.bind.JAXBException;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.Response;
import org.apache.log4j.Logger;
import org.jboss.identity.federation.api.saml.v2.request.SAML2Request;
import org.jboss.identity.federation.bindings.config.KeyProviderType;
import org.jboss.identity.federation.bindings.interfaces.TrustKeyManager;
import org.jboss.identity.federation.bindings.util.PostBindingUtil;
import org.jboss.identity.federation.core.saml.v2.holders.DestinationInfoHolder;
import org.jboss.identity.federation.core.saml.v2.holders.SignatureInfoHolder;
import org.jboss.identity.federation.core.saml.v2.util.SignatureUtil;
import org.jboss.identity.federation.saml.v2.protocol.AuthnRequestType;
import org.xml.sax.SAXException;
/**
* JBID-142: POST form authenticator that can
* handle signatures at the SP side
* @author Anil.Saldhana@redhat.com
* @since Jul 24, 2009
*/
public class SPPostSignatureFormAuthenticator extends SPPostFormAuthenticator
{
private static Logger log = Logger.getLogger(SPPostSignatureFormAuthenticator.class);
private TrustKeyManager keyManager;
@Override
public void start() throws LifecycleException
{
super.start();
KeyProviderType keyProvider = this.spConfiguration.getKeyProvider();
if(keyProvider == null)
throw new LifecycleException("KeyProvider is null");
try
{
ClassLoader tcl = SecurityActions.getContextClassLoader();
String keyManagerClassName = keyProvider.getClassName();
if(keyManagerClassName == null)
throw new RuntimeException("KeyManager class name is null");
Class<?> clazz = tcl.loadClass(keyManagerClassName);
this.keyManager = (TrustKeyManager) clazz.newInstance();
keyManager.setAuthProperties(keyProvider.getAuth());
keyManager.setValidatingAlias(keyProvider.getValidatingAlias());
}
catch(Exception e)
{
log.error("Exception reading configuration:",e);
throw new LifecycleException(e.getLocalizedMessage());
}
log.trace("Key Provider=" + keyProvider.getClassName());
}
protected void sendRequestToIDP(AuthnRequestType authnRequest, String relayState, Response response)
throws IOException, SAXException, JAXBException, GeneralSecurityException
{
SAML2Request saml2Request = new SAML2Request();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
saml2Request.marshall(authnRequest, baos);
String samlMessage = PostBindingUtil.base64Encode(baos.toString());
String destination = authnRequest.getDestination();
//Get the signing key
PrivateKey signingKey = keyManager.getSigningKey();
//SigAlg
String algo = signingKey.getAlgorithm();
String sigAlg = SignatureUtil.getXMLSignatureAlgorithmURI(algo);
sigAlg = URLEncoder.encode(sigAlg, "UTF-8");
byte[] signedValue = SignatureUtil.sign(samlMessage, signingKey);
PostBindingUtil.sendPost(new DestinationInfoHolder(destination, samlMessage, relayState),
new SignatureInfoHolder(signedValue,sigAlg),response, true);
}
@Override
protected boolean validate(Request request) throws IOException, GeneralSecurityException
{
boolean result = super.validate(request);
if( result == false)
return result;
String samlMessage = request.getParameter("SAMLResponse");
//Check if there is a signature
String sig = request.getParameter("Signature");
if(sig == null || sig.length() == 0)
{
log.error("Signature Value missing in response from IDP");
return false;
}
String sigAlg = request.getParameter("sigAlg");
if(sigAlg == null || sigAlg.length() == 0)
{
log.error("Signature Algorithm missing in the response from IDP");
return false;
}
return PostBindingUtil.validateSignature(samlMessage.getBytes("UTF-8"), sig,
keyManager.getValidatingKey(request.getRemoteAddr()));
}
}