package com.sun.xml.ws.mex.server;
import com.sun.xml.stream.buffer.MutableXMLStreamBuffer;
import com.sun.xml.ws.api.SOAPVersion;
import com.sun.xml.ws.api.addressing.AddressingVersion;
import com.sun.xml.ws.api.message.HeaderList;
import com.sun.xml.ws.api.message.Message;
import com.sun.xml.ws.api.message.Messages;
import com.sun.xml.ws.api.server.BoundEndpoint;
import com.sun.xml.ws.api.server.Module;
import com.sun.xml.ws.api.server.WSEndpoint;
import com.sun.xml.ws.api.server.WSWebServiceContext;
import com.sun.xml.ws.developer.JAXWSProperties;
import com.sun.xml.ws.transport.http.servlet.ServletModule;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.ws.BindingProvider;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.WebServiceException;
import javax.xml.ws.handler.MessageContext;
import javax.xml.ws.Provider;
import javax.xml.ws.Service;
import javax.xml.ws.ServiceMode;
import javax.xml.ws.WebServiceProvider;
import javax.xml.ws.soap.Addressing;
import com.sun.xml.ws.mex.MetadataConstants;
import javax.servlet.http.HttpServletRequest;
import com.sun.xml.ws.mex.MessagesMessages;
import static com.sun.xml.ws.mex.MetadataConstants.GET_MDATA_REQUEST;
import static com.sun.xml.ws.mex.MetadataConstants.GET_REQUEST;
import static com.sun.xml.ws.mex.MetadataConstants.GET_RESPONSE;
import static com.sun.xml.ws.mex.MetadataConstants.MEX_NAMESPACE;
import static com.sun.xml.ws.mex.MetadataConstants.MEX_PREFIX;
import static com.sun.xml.ws.mex.MetadataConstants.WSA_PREFIX;
@ServiceMode(value=Service.Mode.MESSAGE)
@WebServiceProvider
@Addressing(enabled=true,required=true)
public class MEXEndpoint implements Provider<Message> {
@Resource
protected WebServiceContext wsContext;
private static final Logger logger =
Logger.getLogger(MEXEndpoint.class.getName());
public Message invoke(Message requestMsg) {
if (requestMsg == null || !requestMsg.hasHeaders()) {
// TODO: Better error message
throw new WebServiceException("Malformed MEX Request");
}
WSEndpoint wsEndpoint = (WSEndpoint) wsContext.getMessageContext().get(JAXWSProperties.WSENDPOINT);
SOAPVersion soapVersion = wsEndpoint.getBinding().getSOAPVersion();
// try w3c version of ws-a first, then member submission version
final HeaderList headers = requestMsg.getHeaders();
String action = headers.getAction(AddressingVersion.W3C, soapVersion);
AddressingVersion wsaVersion = AddressingVersion.W3C;
if (action == null) {
action = headers.getAction(AddressingVersion.MEMBER, soapVersion);
wsaVersion = AddressingVersion.MEMBER;
}
if (action == null) {
// TODO: Better error message
throw new WebServiceException("No wsa:Action specified");
}
else if (action.equals(GET_REQUEST)) {
final String toAddress = headers.getTo(wsaVersion, soapVersion);
return processGetRequest(requestMsg, toAddress, wsaVersion, soapVersion);
}
else if (action.equals(GET_MDATA_REQUEST)) {
final Message faultMessage = Messages.create(GET_MDATA_REQUEST,
wsaVersion, soapVersion);
wsContext.getMessageContext().put(BindingProvider.SOAPACTION_URI_PROPERTY, wsaVersion.getDefaultFaultAction());
return faultMessage;
}
// If here, either action is unsupported
// TODO: Better error message
throw new UnsupportedOperationException(action);
}
/*
* This method creates an xml stream buffer, writes the response to
* it, and uses it to create a response message.
*/
private Message processGetRequest(final Message request,
String address, final AddressingVersion wsaVersion,
final SOAPVersion soapVersion) {
try {
final MutableXMLStreamBuffer buffer = new MutableXMLStreamBuffer();
final XMLStreamWriter writer = buffer.createFromXMLStreamWriter();
WSEndpoint wsEndpoint = (WSEndpoint) wsContext.getMessageContext().get(JAXWSProperties.WSENDPOINT);
HttpServletRequest servletRequest = (HttpServletRequest)wsContext.getMessageContext().get(MessageContext.SERVLET_REQUEST);
if (servletRequest == null) {
// TODO: better error message
throw new WebServiceException("MEX: no ServletRequest can be found");
}
// Derive the address of the owner endpoint.
// e.g. http://localhost/foo/mex --> http://localhost/foo
WSEndpoint ownerEndpoint = null;
ServletModule module = (ServletModule) wsEndpoint.getContainer().getSPI(ServletModule.class);
String baseAddress = module.getContextPath(servletRequest);
String ownerEndpointAddress = null;
List<BoundEndpoint> boundEndpoints = module.getBoundEndpoints();
for (BoundEndpoint endpoint : boundEndpoints) {
if (wsEndpoint == endpoint.getEndpoint()) {
ownerEndpointAddress = endpoint.getAddress(baseAddress).toString();
break;
}
}
ownerEndpointAddress = ownerEndpointAddress.substring(0,ownerEndpointAddress.length() - "/mex".length());
boundEndpoints = module.getBoundEndpoints();
for (BoundEndpoint endpoint : boundEndpoints) {
//compare ownerEndpointAddress with this endpoints address
// if matches, set ownerEndpoint to the corresponding WSEndpoint
String endpointAddress = endpoint.getAddress(baseAddress).toString();
if (endpointAddress.equals(ownerEndpointAddress)) {
ownerEndpoint = endpoint.getEndpoint();
break;
}
}
// If the owner endpoint has been found, then
// get its metadata and write it to the response message
if (ownerEndpoint != null) {
address = address.substring(0 , address.length() - 4);
writeStartEnvelope(writer, wsaVersion, soapVersion);
WSDLRetriever wsdlRetriever = new WSDLRetriever(ownerEndpoint);
wsdlRetriever.addDocuments(writer, null, address);
writer.writeEndDocument();
writer.flush();
final Message responseMessage = Messages.create(buffer);
wsContext.getMessageContext().put(BindingProvider.SOAPACTION_URI_PROPERTY, GET_RESPONSE);
return responseMessage;
}
// If we get here there was no metadata for the owner endpoint
// TODO: This should probably be something other than unsupported action for clarity
final Message faultMessage = Messages.create(GET_REQUEST,
wsaVersion, soapVersion);
wsContext.getMessageContext().put(BindingProvider.SOAPACTION_URI_PROPERTY, wsaVersion.getDefaultFaultAction());
return faultMessage;
} catch (XMLStreamException streamE) {
final String exceptionMessage =
MessagesMessages.MEX_0001_RESPONSE_WRITING_FAILURE(address);
logger.log(Level.SEVERE, exceptionMessage, streamE);
throw new WebServiceException(exceptionMessage, streamE);
}
}
private void writeStartEnvelope(final XMLStreamWriter writer,
final AddressingVersion wsaVersion, final SOAPVersion soapVersion)
throws XMLStreamException {
final String soapPrefix = "soapenv";
writer.writeStartDocument();
writer.writeStartElement(soapPrefix, "Envelope", soapVersion.nsUri);
// todo: this line should go away after bug fix - 6418039
writer.writeNamespace(soapPrefix, soapVersion.nsUri);
writer.writeNamespace(MetadataConstants.WSA_PREFIX, wsaVersion.nsUri);
writer.writeNamespace(MetadataConstants.MEX_PREFIX, MetadataConstants.MEX_NAMESPACE);
writer.writeStartElement(soapPrefix, "Body", soapVersion.nsUri);
writer.writeStartElement(MetadataConstants.MEX_PREFIX, "Metadata", MetadataConstants.MEX_NAMESPACE);
}
}
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