nl.surfnet.mujina.saml.SingleSignOnService.java Source code

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Here is the source code for nl.surfnet.mujina.saml.SingleSignOnService.java

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/*
 * Copyright 2012 SURFnet bv, The Netherlands
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package nl.surfnet.mujina.saml;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.opensaml.common.binding.SAMLMessageContext;
import org.opensaml.saml2.core.AuthnRequest;
import org.opensaml.ws.message.decoder.MessageDecodingException;
import org.opensaml.xml.security.SecurityException;
import org.opensaml.xml.validation.ValidationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.web.WebAttributes;
import org.springframework.web.HttpRequestHandler;

import nl.surfnet.mujina.saml.xml.SAML2ValidatorSuite;
import nl.surfnet.mujina.spring.AuthnRequestInfo;
import nl.surfnet.spring.security.opensaml.SAMLMessageHandler;

public class SingleSignOnService implements HttpRequestHandler {

    private final static Logger logger = LoggerFactory.getLogger(SingleSignOnService.class);

    private final SAMLMessageHandler adapter;
    private final String authnResponderURI;
    private final SAML2ValidatorSuite validatorSuite;

    public SingleSignOnService(SAMLMessageHandler adapter, String authnResponderURI,
            SAML2ValidatorSuite validatorSuite) {
        super();
        this.adapter = adapter;
        this.authnResponderURI = authnResponderURI;
        this.validatorSuite = validatorSuite;
    }

    @SuppressWarnings("rawtypes")
    @Override
    public void handleRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        SAMLMessageContext messageContext = null;
        try {
            messageContext = adapter.extractSAMLMessageContext(request);
        } catch (MessageDecodingException mde) {
            logger.error("Exception decoding SAML message", mde);
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        } catch (SecurityException se) {
            logger.error("Exception decoding SAML message", se);
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }

        AuthnRequest authnRequest = (AuthnRequest) messageContext.getInboundSAMLMessage();

        try {
            validatorSuite.validate(authnRequest);
        } catch (ValidationException ve) {
            logger.warn("AuthnRequest Message failed Validation", ve);
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            return;
        }

        AuthnRequestInfo info = new AuthnRequestInfo(authnRequest.getAssertionConsumerServiceURL(),
                authnRequest.getID(), authnRequest.getIssuer().getValue());

        logger.debug("AuthnRequest {} verified.  Forwarding to SSOSuccessAuthnResponder", info);
        request.getSession().setAttribute(AuthnRequestInfo.class.getName(), info);

        logger.debug("request.getSession().getAttribute(WebAttributes.AUTHENTICATION_EXCEPTION) is {}",
                request.getSession().getAttribute(WebAttributes.AUTHENTICATION_EXCEPTION));

        logger.debug("forwarding to authnResponderURI: {}", authnResponderURI);

        request.getRequestDispatcher(authnResponderURI).forward(request, response);

    }
}