be.e_contract.mycarenet.ehealth.common.WSSecuritySOAPHandler.java Source code

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Here is the source code for be.e_contract.mycarenet.ehealth.common.WSSecuritySOAPHandler.java

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/*
 * Java MyCareNet Project.
 * Copyright (C) 2013 e-Contract.be BVBA.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * 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, see 
 * http://www.gnu.org/licenses/.
 */

package be.e_contract.mycarenet.ehealth.common;

import java.io.IOException;
import java.io.StringReader;
import java.security.PrivateKey;
import java.util.List;
import java.util.Set;
import java.util.Vector;

import javax.xml.crypto.dsig.Reference;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPPart;
import javax.xml.ws.ProtocolException;
import javax.xml.ws.handler.MessageContext;
import javax.xml.ws.handler.soap.SOAPHandler;
import javax.xml.ws.handler.soap.SOAPMessageContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ws.security.SOAPConstants;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSEncryptionPart;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.components.crypto.Crypto;
import org.apache.ws.security.message.WSSecHeader;
import org.apache.ws.security.message.WSSecSignature;
import org.apache.ws.security.message.WSSecTimestamp;
import org.apache.ws.security.util.WSSecurityUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import be.e_contract.mycarenet.common.WSSecurityCrypto;

/**
 * WS-Security JAX-WS SOAP handler implementation for eHealth web services that
 * are secured using the eHealth STS SAML assertion and holder-of-key.
 * 
 * @author Frank Cornelis
 * 
 */
public class WSSecuritySOAPHandler implements SOAPHandler<SOAPMessageContext> {

    private static final Log LOG = LogFactory.getLog(WSSecuritySOAPHandler.class);

    private PrivateKey privateKey;

    private String samlAssertion;

    private final DocumentBuilder documentBuilder;

    public WSSecuritySOAPHandler() {
        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        documentBuilderFactory.setNamespaceAware(true);
        try {
            this.documentBuilder = documentBuilderFactory.newDocumentBuilder();
        } catch (ParserConfigurationException e) {
            throw new RuntimeException("DOM error: " + e.getMessage(), e);
        }
    }

    /**
     * Sets the eHealth holder-of-key private key.
     * 
     * @param privateKey
     */
    public void setPrivateKey(PrivateKey privateKey) {
        this.privateKey = privateKey;
    }

    /**
     * Sets the eHealth STS SAML assertion.
     * 
     * @param samlAssertion
     */
    public void setAssertion(String samlAssertion) {
        this.samlAssertion = samlAssertion;
    }

    @Override
    public boolean handleMessage(SOAPMessageContext context) {
        Boolean outboundProperty = (Boolean) context.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY);
        if (false == outboundProperty) {
            return true;
        }
        try {
            handleOutboundMessage(context);
        } catch (Exception e) {
            LOG.error("outbound exception: " + e.getMessage(), e);
            throw new ProtocolException(e);
        }
        return true;
    }

    private void handleOutboundMessage(SOAPMessageContext context)
            throws WSSecurityException, SAXException, IOException {
        LOG.debug("adding WS-Security header");
        SOAPMessage soapMessage = context.getMessage();
        SOAPPart soapPart = soapMessage.getSOAPPart();

        WSSecHeader wsSecHeader = new WSSecHeader();
        wsSecHeader.insertSecurityHeader(soapPart);

        WSSecTimestamp wsSecTimeStamp = new WSSecTimestamp();
        wsSecTimeStamp.setTimeToLive(60);
        wsSecTimeStamp.build(soapPart, wsSecHeader);

        Document assertionDocument = this.documentBuilder
                .parse(new InputSource(new StringReader(this.samlAssertion)));
        Element assertionElement = assertionDocument.getDocumentElement();
        String assertionId = assertionElement.getAttribute("AssertionID");
        Element importedAssertionElement = (Element) soapPart.importNode(assertionElement, true);
        Element securityHeaderElement = wsSecHeader.getSecurityHeader();
        securityHeaderElement.appendChild(importedAssertionElement);

        WSSecSignature wsSecSignature = new WSSecSignature();
        wsSecSignature.setSignatureAlgorithm(WSConstants.RSA);
        wsSecSignature.setKeyIdentifierType(WSConstants.CUSTOM_KEY_IDENTIFIER);
        wsSecSignature.setCustomTokenValueType(WSConstants.WSS_SAML_KI_VALUE_TYPE);
        wsSecSignature.setCustomTokenId(assertionId);
        Crypto crypto = new WSSecurityCrypto(this.privateKey, null);
        wsSecSignature.prepare(soapPart, crypto, wsSecHeader);
        Vector<WSEncryptionPart> signParts = new Vector<WSEncryptionPart>();
        SOAPConstants soapConstants = WSSecurityUtil.getSOAPConstants(soapPart.getDocumentElement());
        signParts.add(new WSEncryptionPart(soapConstants.getBodyQName().getLocalPart(),
                soapConstants.getEnvelopeURI(), "Content"));
        signParts.add(new WSEncryptionPart(wsSecTimeStamp.getId()));
        List<Reference> referenceList = wsSecSignature.addReferencesToSign(signParts, wsSecHeader);
        wsSecSignature.computeSignature(referenceList, false, null);
    }

    @Override
    public boolean handleFault(SOAPMessageContext context) {
        return false;
    }

    @Override
    public void close(MessageContext context) {
    }

    @Override
    public Set<QName> getHeaders() {
        return null;
    }
}