/*
* 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.MalformedURLException;
import java.net.URL;
import java.security.GeneralSecurityException;
import java.security.PublicKey;
import javax.xml.bind.JAXBException;
import javax.xml.crypto.MarshalException;
import javax.xml.crypto.dsig.XMLSignatureException;
import org.apache.catalina.LifecycleException;
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.core.config.KeyProviderType;
import org.jboss.identity.federation.core.interfaces.TrustKeyConfigurationException;
import org.jboss.identity.federation.core.interfaces.TrustKeyManager;
import org.jboss.identity.federation.core.interfaces.TrustKeyProcessingException;
import org.jboss.identity.federation.core.saml.v2.common.SAMLDocumentHolder;
import org.jboss.identity.federation.core.saml.v2.exceptions.IssuerNotTrustedException;
import org.jboss.identity.federation.core.saml.v2.holders.DestinationInfoHolder;
import org.jboss.identity.federation.core.util.XMLSignatureUtil;
import org.jboss.identity.federation.saml.v2.protocol.AuthnRequestType;
import org.jboss.identity.federation.saml.v2.protocol.ResponseType;
import org.jboss.identity.federation.web.util.PostBindingUtil;
import org.w3c.dom.Document;
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 boolean trace = log.isTraceEnabled();
private TrustKeyManager keyManager;
private boolean signAssertions = false;
public boolean isSignAssertions()
{
return signAssertions;
}
public void setSignAssertions(boolean signAssertions)
{
this.signAssertions = signAssertions;
}
@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());
}
if(trace) 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();
PostBindingUtil.sendPost(new DestinationInfoHolder(destination, samlMessage, relayState),
response, true);
}
@Override
protected boolean verifySignature(SAMLDocumentHolder samlDocumentHolder) throws IssuerNotTrustedException
{
Document samlResponse = samlDocumentHolder.getSamlDocument();
ResponseType response = (ResponseType) samlDocumentHolder.getSamlObject();
String issuerID = response.getIssuer().getValue();
if(issuerID == null)
throw new IssuerNotTrustedException("Issue missing");
URL issuerURL;
try
{
issuerURL = new URL(issuerID);
}
catch (MalformedURLException e1)
{
throw new IssuerNotTrustedException(e1);
}
try
{
PublicKey publicKey = keyManager.getValidatingKey(issuerURL.getHost());
if(trace) log.trace("Going to verify signature in the saml response from IDP");
boolean sigResult = XMLSignatureUtil.validate(samlResponse, publicKey);
if(trace) log.trace("Signature verification="+sigResult);
return sigResult;
}
catch (TrustKeyConfigurationException e)
{
log.error("Unable to verify signature",e);
}
catch (TrustKeyProcessingException e)
{
log.error("Unable to verify signature",e);
}
catch (MarshalException e)
{
log.error("Unable to verify signature",e);
}
catch (XMLSignatureException e)
{
log.error("Unable to verify signature",e);
}
return false;
}
}