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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.cxf.frontend;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.w3c.dom.Document;
import org.apache.cxf.binding.soap.interceptor.EndpointSelectionInterceptor;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.common.util.UrlUtils;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageImpl;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.staxutils.StaxUtils;
import org.apache.cxf.transport.Conduit;
/**
*
*/
public class WSDLGetInterceptor extends AbstractPhaseInterceptor {
public static final WSDLGetInterceptor INSTANCE = new WSDLGetInterceptor();
private static final Logger LOG = LogUtils.getL7dLogger(WSDLGetInterceptor.class);
public WSDLGetInterceptor() {
super(Phase.READ);
getAfter().add(EndpointSelectionInterceptor.class.getName());
}
public void doOutput(Message message, String base, Document doc, OutputStream out)
throws WSDLQueryException {
String enc = null;
try {
enc = doc.getXmlEncoding();
} catch (Exception ex) {
//ignore - not dom level 3
}
if (enc == null) {
enc = "utf-8";
}
XMLStreamWriter writer = StaxUtils.createXMLStreamWriter(out,
enc);
try {
StaxUtils.writeNode(doc, writer, true);
writer.flush();
} catch (XMLStreamException e) {
throw new WSDLQueryException(new org.apache.cxf.common.i18n.Message("COULD_NOT_PROVIDE_WSDL",
LOG,
base), e);
} finally {
StaxUtils.close(writer);
}
}
public void handleMessage(Message message) throws Fault {
String method = (String)message.get(Message.HTTP_REQUEST_METHOD);
String query = (String)message.get(Message.QUERY_STRING);
if (!"GET".equals(method) || StringUtils.isEmpty(query)) {
return;
}
String baseUri = (String)message.get(Message.REQUEST_URL);
String ctx = (String)message.get(Message.PATH_INFO);
boolean setOutMessageToNull = false;
try {
CachedOutputStream cos = null;
//cannot have two wsdl's being written for the same endpoint at the same
//time as the addresses may get mixed up
synchronized (message.getExchange().getEndpoint()) {
Map map = UrlUtils.parseQueryString(query);
if (isRecognizedQuery(map, baseUri, ctx,
message.getExchange().getEndpoint().getEndpointInfo())) {
setOutMessageToNull = true;
try {
Document doc = getDocument(message,
baseUri,
map,
ctx,
message.getExchange().getEndpoint().getEndpointInfo());
String enc = null;
try {
enc = doc.getXmlEncoding();
} catch (Exception ex) {
//ignore - not dom level 3
}
if (enc == null) {
enc = "utf-8";
}
cos = new CachedOutputStream();
XMLStreamWriter writer = StaxUtils.createXMLStreamWriter(cos,
enc);
StaxUtils.writeNode(doc, writer, true);
writer.flush();
writer.close();
} catch (XMLStreamException e) {
throw new Fault(e);
}
}
}
if (cos != null) {
try {
Conduit c = message.getExchange().getDestination().getBackChannel(message, null, null);
Message mout = new MessageImpl();
mout.setExchange(message.getExchange());
message.getExchange().setOutMessage(mout);
mout.put(Message.CONTENT_TYPE, "text/xml");
c.prepare(mout);
OutputStream os = mout.getContent(OutputStream.class);
InputStream cis = cos.getInputStream();
IOUtils.copyAndCloseInput(cis, os);
message.getInterceptorChain().abort();
try {
os.flush();
os.close();
} catch (IOException ex) {
LOG.log(Level.FINE, "Failure writing full wsdl to the stream", ex);
//we can ignore this. Likely, whatever has requested the WSDL
//has closed the connection before reading the entire wsdl.
//WSDL4J has a tendency to not read the closing tags and such
//and thus can sometimes hit this. In any case, it's
//pretty much ignorable and nothing we can do about it (cannot
//send a fault or anything anyway
}
cos.close();
} catch (IOException e) {
throw new Fault(e);
}
}
} finally {
if (setOutMessageToNull) {
message.getExchange().setOutMessage(null);
}
}
}
public Document getDocument(Message message,
String base,
Map params,
String ctxUri,
EndpointInfo endpointInfo) {
return new WSDLGetUtils().getDocument(message, base, params, ctxUri, endpointInfo);
}
public boolean isRecognizedQuery(Map map,
String baseUri,
String ctx,
EndpointInfo endpointInfo) {
if (map.containsKey("wsdl")
|| map.containsKey("xsd")) {
return true;
}
return false;
}
}
