org.jasig.portlet.calendar.adapter.exchange.ExchangeWebServiceCallBack.java Source code

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Here is the source code for org.jasig.portlet.calendar.adapter.exchange.ExchangeWebServiceCallBack.java

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/**
 * Licensed to Apereo under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Apereo licenses this file to you 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 the following location:
 *
 *   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 org.jasig.portlet.calendar.adapter.exchange;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

import javax.xml.namespace.QName;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;

import org.apache.commons.lang.StringUtils;
import org.apache.http.annotation.NotThreadSafe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.ws.WebServiceMessage;
import org.springframework.ws.client.core.WebServiceMessageCallback;
import org.springframework.ws.soap.SoapHeaderElement;
import org.springframework.ws.soap.SoapMessage;
import org.springframework.ws.soap.client.core.SoapActionCallback;
import org.springframework.xml.transform.StringSource;

@NotThreadSafe
public class ExchangeWebServiceCallBack implements WebServiceMessageCallback {
    private final Logger log = LoggerFactory.getLogger(getClass());
    private static final String impersonationFirstPart = "<t:ExchangeImpersonation"
            + " xmlns:t=\"http://schemas.microsoft.com/exchange/services/2006/types\">"
            + "<t:ConnectingSID><t:PrincipalName>";
    private static final String impersonationSecondPart = "</t:PrincipalName></t:ConnectingSID></t:ExchangeImpersonation>";

    private String impersonatedAccountId;
    private final WebServiceMessageCallback actionCallback;
    private String requestServerVersion;

    /**
     * Create callback to add SOAP headers potentially including impersonated account ID for Exchange Impersonation
     * to an Exchange Web Service SOAP message.
     *
     * @param actionCallbackType Action type string
     * @param requestServerVersion Minimum Exchange Server version code (see http://msdn.microsoft.com/en-us/library/exchange/exchangewebservices.exchangeversiontype(v=exchg.140).aspx)
     * @param impersonatedAccountDomainId Account (username@NTdomain) to provide data for when using Exchange
     *                                      Impersonation. Empty string or null to not use Exchange Impersonation.
     */
    public ExchangeWebServiceCallBack(String actionCallbackType, String requestServerVersion,
            String impersonatedAccountDomainId) {
        this.actionCallback = new SoapActionCallback(actionCallbackType);
        this.requestServerVersion = requestServerVersion;
        this.impersonatedAccountId = impersonatedAccountDomainId;
    }

    @Override
    public void doWithMessage(WebServiceMessage message) throws IOException, TransformerException {
        actionCallback.doWithMessage(message);
        SoapMessage soap = (SoapMessage) message;
        QName rsv = new QName("http://schemas.microsoft.com/exchange/services/2006/types", "RequestServerVersion",
                "ns3");

        SoapHeaderElement version = soap.getEnvelope().getHeader().addHeaderElement(rsv);
        version.addAttribute(new QName("Version"), requestServerVersion);

        if (StringUtils.isNotBlank(impersonatedAccountId)) {
            // TODO create header using message construction not derived from String XML value
            StringSource headerSource = new StringSource(
                    impersonationFirstPart + impersonatedAccountId + impersonationSecondPart);
            Transformer transformer = TransformerFactory.newInstance().newTransformer();
            transformer.transform(headerSource, soap.getEnvelope().getHeader().getResult());
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            message.writeTo(bout);
            log.debug("Including impersonation header in SOAP message for account {}", impersonatedAccountId);
        }
    }
}