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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
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 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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 * and therefore, elected the GPL Version 2 license, then the option applies
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// Portions Copyright [2018] [Payara Foundation and/or its affiliates]

/*
 * ClientWSSHandler.java
 *
 * Created on June 1, 2004, 11:46 AM
 */

package com.sun.enterprise.security.webservices;

import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.namespace.QName;
import javax.xml.rpc.JAXRPCException;
import javax.xml.rpc.handler.Handler;
import javax.xml.rpc.handler.HandlerInfo;
import javax.xml.rpc.handler.MessageContext;
import javax.xml.rpc.handler.soap.SOAPMessageContext;
import javax.xml.soap.SOAPMessage;

import com.sun.enterprise.security.SecurityServicesUtil;
//security apis
import com.sun.enterprise.security.jauth.ClientAuthContext;
import com.sun.enterprise.security.jmac.provider.ClientAuthConfig;

/**
 * Client Side Handler to be invoked from the appclient A similiar copy sans appserver specific
 * logging mechanism should be made available to standalone clients to use our WSS infrastructure.
 *
 * @author Harpreet Singh
 * @version
 * @since
 */
public class MessageLayerClientHandler implements Handler {

    private static Logger _logger = LogUtils.getLogger();

    // key to ClientAuthConfig in HandlerInfo
    public static final String CLIENT_AUTH_CONFIG = "com.sun.enterprise.security.jmac.provider.ClientAuthConfig";

    // key to ClientAuthContext in SOAPMessageContext
    private static final String CLIENT_AUTH_CONTEXT = "com.sun.enterprise.security.jauth.ClientAuthContext";

    private static String errMsg = "Client WSS Handler: MessageContext not of type SOAPMessageContext";

    private ClientAuthConfig config_;

    private QName qname[];

    private boolean isAppclientContainer;

    private QName serviceName;

    public MessageLayerClientHandler() {
        isAppclientContainer = SecurityServicesUtil.getInstance().isACC();
    }

    @Override
    public boolean handleFault(MessageContext messageContext) {
        // no need to do any special processing
        if (_logger.isLoggable(Level.FINE)) {
            _logger.log(Level.FINE, "wss-auth-client: ClientHandler does not handle" + " SOAP faults");
        }

        return true;
    }

    @Override
    public boolean handleRequest(MessageContext messageContext) {
        if (!isSoapMessageContext(messageContext)) {
            // cannot process this, as this is not a soap message context
            throw new JAXRPCException(errMsg);
        }
        if (config_ == null) {
            return true;
        }

        // get the ClientAuthContext
        SOAPMessageContext smc = (SOAPMessageContext) messageContext;
        SOAPMessage request = smc.getMessage();
        ClientAuthContext cAC = config_.getAuthContext(null, request);
        if (cAC == null) {
            return true;
        }

        smc.setProperty(CLIENT_AUTH_CONTEXT, cAC);
        smc.setProperty(javax.xml.ws.handler.MessageContext.WSDL_SERVICE, serviceName);

        try {
            WebServiceSecurity.secureRequest(smc, cAC, isAppclientContainer);
        } catch (Exception e) {
            if (_logger.isLoggable(Level.WARNING)) {
                _logger.log(Level.WARNING, LogUtils.ERROR_REQUEST_SECURING, e);
            }
            throw new JAXRPCException(e);
        }
        return true;
    }

    @Override
    public boolean handleResponse(MessageContext messageContext) {
        boolean retValue;
        if (!isSoapMessageContext(messageContext)) {
            // cannot process this, as this is not a soap message context
            throw new JAXRPCException(errMsg);
        }
        if (config_ == null) {
            return true;
        }

        // get the ClientAuthContext
        SOAPMessageContext smc = (SOAPMessageContext) messageContext;
        ClientAuthContext cAC = (ClientAuthContext) smc.getProperty(CLIENT_AUTH_CONTEXT);
        if (cAC == null) {
            return true;
        }

        try {
            retValue = WebServiceSecurity.validateResponse(smc, cAC);
        } catch (Exception e) {
            if (_logger.isLoggable(Level.WARNING)) {
                _logger.log(Level.WARNING, LogUtils.ERROR_RESPONSE_VALIDATION, e);
            }
            throw new JAXRPCException(e);
        }

        return retValue;
    }

    // if headers contains the list of understood headers, then we need to make
    // sure that wsse is included; although if so, we need a way to make sure
    // that the provider honors this commitment.
    @Override
    public QName[] getHeaders() {
        return qname;
    }

    @Override
    public void destroy() {
        qname = null;
    }

    @Override
    public void init(HandlerInfo info) {
        // 109 mandates saving qnames in init
        qname = info.getHeaders();
        config_ = (ClientAuthConfig) info.getHandlerConfig().get(CLIENT_AUTH_CONFIG);
        serviceName = (QName) info.getHandlerConfig().get(javax.xml.ws.handler.MessageContext.WSDL_SERVICE);
    }

    /**
     * 109 mandates that each MessageContext be checked to see if it is a a SOAPMessageContext and
     * whether the handler processes it
     */
    private boolean isSoapMessageContext(MessageContext mc) {
        boolean retValue = (mc instanceof SOAPMessageContext) ? true : false;
        if (!retValue && _logger.isLoggable(Level.WARNING)) {
            _logger.log(Level.WARNING, LogUtils.NOT_SOAP);
        }

        return retValue;
    }

}