| /* |
| * 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.tuscany.sca.host.webapp; |
| |
| import java.io.IOException; |
| import java.util.StringTokenizer; |
| |
| import javax.servlet.RequestDispatcher; |
| import javax.servlet.Servlet; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletRequestWrapper; |
| |
| /** |
| * A Servlet request dispatcher that can be used to delegate requests to a |
| * Servlet registered with the Webapp Servlet host. |
| * |
| * @version $Rev$ $Date$ |
| */ |
| class WebAppRequestDispatcher implements RequestDispatcher { |
| private String servletPath; |
| private Servlet servlet; |
| |
| public WebAppRequestDispatcher(String mapping, Servlet servlet) { |
| if (mapping.endsWith("*")) { |
| mapping = mapping.substring(0, mapping.length()-1); |
| } |
| if (mapping.endsWith("/")) { |
| mapping = mapping.substring(0, mapping.length()-1); |
| } |
| this.servletPath = mapping; |
| this.servlet = servlet; |
| } |
| |
| /** |
| * Returns a request wrapper which will return the correct Servlet path |
| * and path info. |
| * |
| * @param request |
| * @return |
| */ |
| private HttpServletRequest createRequestWrapper(ServletRequest request) { |
| HttpServletRequest requestWrapper = new HttpServletRequestWrapper((HttpServletRequest)request) { |
| |
| @Override |
| public String getServletPath() { |
| return servletPath; |
| } |
| |
| @Override |
| public String getPathInfo() { |
| String path = super.getServletPath(); |
| if (path.length() == 0) { |
| path = super.getPathInfo(); |
| } |
| |
| // TODO: another context path hack, revisit when context path is sorted out |
| path = fiddlePath(path, servletPath); |
| |
| return path; |
| } |
| }; |
| return requestWrapper; |
| } |
| |
| /** |
| * Remove any path suffix thats part of the Servlet context path |
| */ |
| protected String fiddlePath(String path, String servletPath) { |
| StringTokenizer st = new StringTokenizer(path, "/"); |
| if (st.countTokens() == 1) { |
| return path; |
| } |
| String root = ""; |
| while (st.hasMoreTokens()){ |
| String s = st.nextToken(); |
| if (servletPath.endsWith((root + "/" + s))) { |
| root += "/" + s; |
| } else { |
| break; |
| } |
| } |
| String fiddlePath = path.substring(root.length()); |
| return fiddlePath; |
| } |
| |
| public void forward(ServletRequest request, ServletResponse response) throws ServletException, IOException { |
| servlet.service(createRequestWrapper(request), response); |
| } |
| |
| public void include(ServletRequest request, ServletResponse response) throws ServletException, IOException { |
| servlet.service(createRequestWrapper(request), response); |
| } |
| } |
| |