listingagent.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF 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
 *
 * 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.apache.axis2.transport.http;

import org.apache.axiom.attachments.utils.IOUtils;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.context.SessionContext;
import org.apache.axis2.deployment.DeploymentConstants;
import org.apache.axis2.description.AxisDescription;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.description.Parameter;
import org.apache.axis2.description.PolicyInclude;
import org.apache.axis2.description.TransportInDescription;
import org.apache.axis2.transport.TransportListener;
import org.apache.axis2.util.ExternalPolicySerializer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.neethi.Policy;
import org.apache.neethi.PolicyRegistry;
import org.apache.ws.commons.schema.XmlSchema;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class ListingAgent extends AbstractAgent {

    private static final Log log = LogFactory.getLog(ListingAgent.class);

    private static final String LIST_MULTIPLE_SERVICE_JSP_NAME =
            "listServices.jsp";
    private static final String LIST_SINGLE_SERVICE_JSP_NAME =
            "listSingleService.jsp";
    private static final String LIST_FAULTY_SERVICES_JSP_NAME = "listFaultyService.jsp";

    public static final String RUNNING_PORT = "RUNNING_PORT";

    public ListingAgent(ConfigurationContext aConfigContext) {
        super(aConfigContext);
    }

    private void addTransportListner(String schema, int port) {
        try {
            TransportInDescription trsIn =
                    configContext.getAxisConfiguration().getTransportIn(schema);
            if (trsIn == null) {
                trsIn = new TransportInDescription(schema);
                HTTPSListener httspReceiver = new HTTPSListener(port, schema);
                httspReceiver.init(configContext, trsIn);
                trsIn.setReceiver(httspReceiver);
                configContext.getListenerManager().addListener(trsIn, true);
            }
        } catch (AxisFault axisFault) {
            //
        }
    }

    public void handle(HttpServletRequest httpServletRequest,
                       HttpServletResponse httpServletResponse)
            throws IOException, ServletException {

        initTransportListener(httpServletRequest);

        String query = httpServletRequest.getQueryString();
        if (query != null) {
            if (query.indexOf("wsdl2") > 0 || query.indexOf("wsdl") > 0 ||
                query.indexOf("xsd") > 0 || query.indexOf("policy") > 0) {
                processListService(httpServletRequest, httpServletResponse);
            } else {
                super.handle(httpServletRequest, httpServletResponse);
            }
        } else {
            super.handle(httpServletRequest, httpServletResponse);
        }
    }

    protected void initTransportListener(HttpServletRequest httpServletRequest) {
        // httpServletRequest.getLocalPort() , giving me a build error so I had to use the followin
        String filePart = httpServletRequest.getRequestURL().toString();
        int ipindex = filePart.indexOf("//");
        String ip;
        if (ipindex >= 0) {
            ip = filePart.substring(ipindex + 2, filePart.length());
            int seperatorIndex = ip.indexOf(":");
            int slashIndex = ip.indexOf("/");
            String portstr;
            if (seperatorIndex >= 0) {
                portstr = ip.substring(seperatorIndex + 1, slashIndex);
            } else {
                portstr = "80";
            }
            try {
                addTransportListner(httpServletRequest.getScheme(), Integer.parseInt(portstr));
            } catch (NumberFormatException e) {
                log.debug(e.toString(), e);
            }
        }
    }

    protected void processListFaultyServices(HttpServletRequest req, HttpServletResponse res)
            throws IOException, ServletException {
        String serviceName = req.getParameter("serviceName");
        if (serviceName != null) {
            AxisService service = configContext.getAxisConfiguration().getService(serviceName);
            req.getSession().setAttribute(Constants.SINGLE_SERVICE, service);
        }
        renderView(LIST_FAULTY_SERVICES_JSP_NAME, req, res);
    }


    protected void processIndex(HttpServletRequest httpServletRequest,
                                HttpServletResponse httpServletResponse)
            throws IOException, ServletException {
        processListServices(httpServletRequest, httpServletResponse);
    }

    private String extractHostAndPort(String filePart, boolean isHttp) {
        int ipindex = filePart.indexOf("//");
        String ip = null;
        if (ipindex >= 0) {
            ip = filePart.substring(ipindex + 2, filePart.length());
            int seperatorIndex = ip.indexOf(":");
            int slashIndex = ip.indexOf("/");
            String port;
            if (seperatorIndex >= 0) {
                port = ip.substring(seperatorIndex + 1, slashIndex);
                ip = ip.substring(0, seperatorIndex);
            } else {
                ip = ip.substring(0, slashIndex);
                port = "80";
            }
            if (isHttp) {
                configContext.setProperty(RUNNING_PORT, port);
            }
        }
        return ip;
    }

    public void processExplicitSchemaAndWSDL(HttpServletRequest req,
                                             HttpServletResponse res)
            throws IOException, ServletException {
        HashMap services = configContext.getAxisConfiguration().getServices();
        String filePart = req.getRequestURL().toString();
        String schema = filePart.substring(filePart.lastIndexOf("/") + 1,
                                           filePart.length());
        if ((services != null) && !services.isEmpty()) {
            Iterator i = services.values().iterator();
            while (i.hasNext()) {
                AxisService service = (AxisService) i.next();
                InputStream stream = service.getClassLoader().getResourceAsStream("META-INF/" + schema);
                if (stream != null) {
                    OutputStream out = res.getOutputStream();
                    res.setContentType("text/xml");
                    copy(stream, out);
                    out.flush();
                    out.close();
                    return;
                }
            }
        }
    }

    /**
     * Copies the input stream to the output stream
     *
     * @param stream  the <code>InputStream</code>
     * @param ostream the <code>OutputStream</code>
     */
    public static void copy(InputStream stream, OutputStream ostream) throws IOException {
        int nextValue = stream.read();
        while (-1 != nextValue) {
            ostream.write(nextValue);
            nextValue = stream.read();
        }
    }

    public String extractServiceName(String urlString) {
        int n = urlString.indexOf(configContext.getServiceContextPath());
        if (n != -1) {
            String serviceName = urlString.substring(n + configContext.getServiceContextPath().length(),
                    urlString.length());
            if (serviceName.length() > 0) {
                if(serviceName.charAt(0)=='/'){
                    serviceName = serviceName.substring(1);
                }
                return serviceName;
            }
        }
        return urlString.substring(urlString.lastIndexOf("/") + 1,
                urlString.length());
    }

    public void processListService(HttpServletRequest req,
                                   HttpServletResponse res)
            throws IOException, ServletException {

        String url = req.getRequestURL().toString();
        String serviceName = extractServiceName(url);
        HashMap services = configContext.getAxisConfiguration().getServices();
        String query = req.getQueryString();
        int wsdl2 = query.indexOf("wsdl2");
        int wsdl = query.indexOf("wsdl");
        int xsd = query.indexOf("xsd");
        int policy = query.indexOf("policy");

        if ((services != null) && !services.isEmpty()) {
            Object serviceObj = services.get(serviceName);
            if (serviceObj != null) {
                boolean isHttp = "http".equals(req.getScheme());
                if (wsdl2 >= 0) {
                    res.setContentType("text/xml");
                    String ip = extractHostAndPort(url, isHttp);
                    String wsdlName = req.getParameter("wsdl2");
                    if (wsdlName != null && wsdlName.length()>0) {
                        InputStream in = ((AxisService) serviceObj).getClassLoader()
                                .getResourceAsStream(DeploymentConstants.META_INF + "/" + wsdlName);
                        if (in != null) {
                            OutputStream out = res.getOutputStream();
                            out.write(IOUtils.getStreamAsByteArray(in));
                            out.flush();
                            out.close();
                        } else {
                            res.sendError(HttpServletResponse.SC_NOT_FOUND);
                        }
                    } else {
                        OutputStream out = res.getOutputStream();
                        ((AxisService) serviceObj)
                                .printWSDL2(out, ip);
                        out.flush();
                        out.close();
                    }
                    return;
                } else if (wsdl >= 0) {
                    OutputStream out = res.getOutputStream();
                    res.setContentType("text/xml");
                    String ip = extractHostAndPort(url, isHttp);
                    String wsdlName = req.getParameter("wsdl");

                    if (wsdlName != null && wsdlName.length()>0) {
                        AxisService axisServce = (AxisService) serviceObj;
                        axisServce.printUserWSDL(out, wsdlName);
                        out.flush();
                        out.close();
                    } else {
                        ((AxisService) serviceObj).printWSDL(out, ip);
                        out.flush();
                        out.close();
                    }
                    return;