/*
* 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.synapse.transport.nhttp.util;
import org.apache.axiom.om.OMOutputFormat;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.transport.TransportUtils;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.http.HttpRequest;
import java.net.InetAddress;
/**
* A useful set of utility methods for the HTTP transport
*/
public class NhttpUtil {
/**
* This method tries to determine the hostname of the given InetAddress without
* triggering a reverse DNS lookup. {@link java.net.InetAddress#getHostName()}
* triggers a reverse DNS lookup which can be very costly in cases where reverse
* DNS fails. Tries to parse a symbolic hostname from {@link java.net.InetAddress#toString()},
* which is documented to return a String of the form "hostname / literal IP address"
* with 'hostname' blank if not already computed & stored in <code>address</code<.
* <p/>
* If the hostname cannot be determined from InetAddress.toString(),
* the value of {@link java.net.InetAddress#getHostAddress()} is returned.
*
* @param address The InetAddress whose hostname has to be determined
* @return hostsname, if it can be determined. hostaddress, if not.
*
* TODO: We may introduce a System property or some other method of configuration
* TODO: which will specify whether to allow reverse DNS lookup or not
*/
public static String getHostName(InetAddress address) {
String result;
String hostAddress = address.getHostAddress();
String inetAddr = address.toString();
int index1 = inetAddr.lastIndexOf('/');
int index2 = inetAddr.indexOf(hostAddress);
if (index2 == index1 + 1) {
if (index1 == 0) {
result = hostAddress;
} else {
result = inetAddr.substring(0, index1);
}
} else {
result = hostAddress;
}
return result;
}
/**
* Get the EPR for the message passed in
* @param msgContext the message context
* @return the destination EPR
*/
public static EndpointReference getDestinationEPR(MessageContext msgContext) {
// Trasnport URL can be different from the WSA-To
String transportURL = (String) msgContext.getProperty(
Constants.Configuration.TRANSPORT_URL);
if (transportURL != null) {
return new EndpointReference(transportURL);
} else if (
(msgContext.getTo() != null) && !msgContext.getTo().hasAnonymousAddress()) {
return msgContext.getTo();
}
return null;
}
/**
* Retirn the OMOutputFormat to be used for the message context passed in
* @param msgContext the message context
* @return the OMOutputFormat to be used
*/
public static OMOutputFormat getOMOutputFormat(MessageContext msgContext) {
OMOutputFormat format = new OMOutputFormat();
msgContext.setDoingMTOM(TransportUtils.doWriteMTOM(msgContext));
msgContext.setDoingSwA(TransportUtils.doWriteSwA(msgContext));
msgContext.setDoingREST(TransportUtils.isDoingREST(msgContext));
format.setSOAP11(msgContext.isSOAP11());
format.setDoOptimize(msgContext.isDoingMTOM());
format.setDoingSWA(msgContext.isDoingSwA());
format.setCharSetEncoding(TransportUtils.getCharSetEncoding(msgContext));
Object mimeBoundaryProperty = msgContext.getProperty(Constants.Configuration.MIME_BOUNDARY);
if (mimeBoundaryProperty != null) {
format.setMimeBoundary((String) mimeBoundaryProperty);
}
return format;
}
/**
* Get the content type for the message passed in
* @param msgContext the message
* @return content type of the message
*/
public static String getContentType(MessageContext msgContext) {
Object contentTypeObject = msgContext.getProperty(Constants.Configuration.CONTENT_TYPE);
if (contentTypeObject != null) {
return (String) contentTypeObject;
} else if (msgContext.isDoingREST()) {
return HTTPConstants.MEDIA_TYPE_APPLICATION_XML;
} else {
return getOMOutputFormat(msgContext).getContentType();
}
}
/**
* Calculate the REST_URL_POSTFIX from the request URI
* @param uri - The Request URI - String
* @param servicePath String
* @return REST_URL_POSTFIX String
*/
public static String getRestUrlPostfix(String uri, String servicePath){
String contextServicePath = "/" + servicePath;
if (uri.startsWith(contextServicePath)) {
// discard upto servicePath
uri = uri.substring(uri.indexOf(contextServicePath) +
contextServicePath.length());
// discard [proxy] service name if any
int pos = uri.indexOf("/", 1);
if (pos > 0) {
uri = uri.substring(pos);
} else {
pos = uri.indexOf("?");
if (pos != -1) {
uri = uri.substring(pos);
} else {
uri = "";
}
}
} else {
// remove any absolute prefix if any
int pos = uri.indexOf("://");
//compute index of beginning of Query Parameter
int indexOfQueryStart = uri.indexOf("?");
//Check if there exist a absolute prefix '://' and it is before query parameters
//To allow query parameters with URLs. ex: /test?a=http://asddd
if (pos != -1 && ((indexOfQueryStart == -1 || pos < indexOfQueryStart))) {
uri = uri.substring(pos + 3);
}
pos = uri.indexOf("/");
if (pos != -1) {
uri = uri.substring(pos + 1);
}
// Remove the service prefix
if (uri.startsWith(servicePath)) {
// discard upto servicePath
uri = uri.substring(uri.indexOf(contextServicePath)
+ contextServicePath.length());
// discard [proxy] service name if any
pos = uri.indexOf("/", 1);
if (pos > 0) {
uri = uri.substring(pos);
} else {
pos = uri.indexOf("?");
if (pos != -1) {
uri = uri.substring(pos);
} else {
uri = "";
}
}
}
}
return uri;
}
}