1 files changed, 137 insertions, 0 deletions
diff --git a/BKUOnline/src/main/java/at/gv/egiz/bku/online/webapp/WebRequestHandler.java b/BKUOnline/src/main/java/at/gv/egiz/bku/online/webapp/WebRequestHandler.java
new file mode 100644
index 00000000..08b50699
--- /dev/null
+++ b/BKUOnline/src/main/java/at/gv/egiz/bku/online/webapp/WebRequestHandler.java
@@ -0,0 +1,137 @@
+/*
+* Copyright 2009 Federal Chancellery Austria and
+* Graz University of Technology
+*
+* Licensed 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 at.gv.egiz.bku.online.webapp;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.util.Enumeration;
+import java.util.LinkedHashMap;
+import java.util.Locale;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.bku.binding.BindingProcessorManager;
+import at.gv.egiz.bku.binding.HTTPBindingProcessor;
+import at.gv.egiz.bku.binding.HttpUtil;
+import at.gv.egiz.bku.binding.Id;
+import at.gv.egiz.bku.binding.InputDecoderFactory;
+import at.gv.egiz.org.apache.tomcat.util.http.AcceptLanguage;
+
+public class WebRequestHandler extends HttpServlet {
+
+  private static final long serialVersionUID = 1L;
+  
+  private final Logger log = LoggerFactory.getLogger(WebRequestHandler.class);
+
+  @Override
+  protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,
+      java.io.IOException {
+
+    BindingProcessorManager bindingProcessorManager = (BindingProcessorManager) getServletContext()
+        .getAttribute("bindingProcessorManager");
+    if (bindingProcessorManager == null) {
+      String msg = "Configuration error: BindingProcessorManager missing!";
+      log.error(msg);
+      resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg);
+      return;
+    }
+
+    Id id = (Id) req.getAttribute("id");
+    if (id == null) {
+      String msg = "No request id! Configuration error: ServletFilter missing?"; 
+      log.error(msg);
+      resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg);
+      return;
+    }
+    
+    // if binding processor with same id is present: remove
+    bindingProcessorManager.removeBindingProcessor(id);
+    
+    Locale locale = AcceptLanguage.getLocale(req.getHeader("Accept-Language"));
+    if (log.isInfoEnabled()) {
+      log.info("Recieved request (Accept-Language locale: {}).", locale);
+    }
+    
+    // create new binding processor
+    String protocol = getServletConfig().getInitParameter("protocol");
+    if (protocol == null || protocol.isEmpty()) {
+      protocol = req.getScheme();
+    }
+    HTTPBindingProcessor bindingProcessor = (HTTPBindingProcessor) bindingProcessorManager
+        .createBindingProcessor(protocol, locale);    
+
+    // set headers
+    LinkedHashMap<String, String> headerMap = new LinkedHashMap<String, String>();
+    if (req.getHeaderNames() != null) {
+      for (Enumeration<?> headerName = req.getHeaderNames(); headerName
+          .hasMoreElements();) {
+        String name = (String) headerName.nextElement();
+        // Account for multiple headers with the same field-name, but
+        // they are very rare, so we are not using a StringBuffer.
+        Enumeration<?> headers = req.getHeaders(name);
+        String value = null;
+        while (headers.hasMoreElements()) {
+          value = (value == null) 
+              ? (String) headers.nextElement() 
+              : value + ", " + headers.nextElement();
+        }
+        headerMap.put(name, value);
+      }
+    }
+    bindingProcessor.setHTTPHeaders(headerMap);
+    
+    // set request stream 
+    InputStream inputStream;
+    if (req.getMethod().equals("POST")) {
+      inputStream = req.getInputStream();
+    } else {
+      headerMap.put(HttpUtil.HTTP_HEADER_CONTENT_TYPE, InputDecoderFactory.URL_ENCODED);
+      String queryString = req.getQueryString();
+      if (queryString != null) {
+        inputStream = new ByteArrayInputStream(queryString.getBytes("UTF-8"));
+      } else {
+        inputStream = new ByteArrayInputStream(new byte[] {});
+      }
+    }
+    bindingProcessor.consumeRequestStream(req.getRequestURL().toString(), inputStream);
+    inputStream.close();
+
+    // process
+    bindingProcessorManager.process(id, bindingProcessor);
+  
+    log.debug("Sending redirect to user interface.");
+    // TODO: appending the jsessionid here breaks the separation of request
+    // handling and request state tracking done in the servlet filter, but 
+    // the servlet filter does not allow us to modify the redirect
+    resp.sendRedirect("ui;jsessionid=" + id.toString());
+      
+  }
+
+  @Override
+  protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+      throws ServletException, java.io.IOException {
+    doPost(req, resp);
+  }
+  
+}