Moving to root below branch label

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/app/servlet/UploadFileServlet.java

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+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * 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.alfresco.web.app.servlet;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+
+import org.alfresco.error.AlfrescoRuntimeException;
+import org.alfresco.util.TempFileProvider;
+import org.alfresco.web.app.Application;
+import org.alfresco.web.bean.FileUploadBean;
+import org.apache.commons.fileupload.FileItem;
+import org.apache.commons.fileupload.disk.DiskFileItemFactory;
+import org.apache.commons.fileupload.servlet.ServletFileUpload;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * Servlet that takes a file uploaded via a browser and represents it as an
+ * UploadFileBean in the session
+ * 
+ * @author gavinc
+ */
+public class UploadFileServlet extends HttpServlet
+{
+   private static final long serialVersionUID = -5482538466491052873L;
+   private static Log logger = LogFactory.getLog(UploadFileServlet.class); 
+   
+   /**
+    * @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
+    */
+   protected void service(HttpServletRequest request, HttpServletResponse response)
+      throws ServletException, IOException
+   {
+      String returnPage = null;
+      boolean isMultipart = ServletFileUpload.isMultipartContent(request);
+      
+      try
+      {
+         AuthenticationHelper.authenticate(getServletContext(), request, response);
+         
+         if (isMultipart == false)
+         {
+            throw new AlfrescoRuntimeException("This servlet can only be used to handle file upload requests, make" +
+                                        "sure you have set the enctype attribute on your form to multipart/form-data");
+         }
+
+         if (logger.isDebugEnabled())
+            logger.debug("Uploading servlet servicing...");
+         
+         HttpSession session = request.getSession();
+         ServletFileUpload upload = new ServletFileUpload(new DiskFileItemFactory());
+         List<FileItem> fileItems = upload.parseRequest(request);
+         
+         Iterator<FileItem> iter = fileItems.iterator();
+         FileUploadBean bean = new FileUploadBean();
+         while(iter.hasNext())
+         {
+            FileItem item = iter.next();
+            if(item.isFormField())
+            {
+               if (item.getFieldName().equalsIgnoreCase("return-page"))
+               {
+                  returnPage = item.getString();
+               }
+            }
+            else
+            {
+               String filename = item.getName();
+               if (filename != null && filename.length() != 0)
+               {
+                  if (logger.isDebugEnabled())
+                     logger.debug("Processing uploaded file: " + filename);
+                  
+                  // workaround a bug in IE where the full path is returned
+                  // IE is only available for Windows so only check for the Windows path separator
+                  int idx = filename.lastIndexOf('\\');
+                  
+                  if (idx == -1)
+                  {
+                     // if there is no windows path separator check for *nix
+                     idx = filename.lastIndexOf('/');
+                  }
+                  
+                  if (idx != -1)
+                  {
+                     filename = filename.substring(idx + File.separator.length());
+                  }
+                  
+                  File tempFile = TempFileProvider.createTempFile("alfresco", ".upload");
+                  item.write(tempFile);
+                  bean.setFile(tempFile);
+                  bean.setFileName(filename);
+                  bean.setFilePath(tempFile.getAbsolutePath());
+                  session.setAttribute(FileUploadBean.FILE_UPLOAD_BEAN_NAME, bean);
+                  if (logger.isDebugEnabled())
+                     logger.debug("Temp file: " + tempFile.getAbsolutePath() + " created from upload filename: " + filename);
+               }
+            }
+         }
+         
+         if (returnPage == null || returnPage.length() == 0)
+         {
+            throw new AlfrescoRuntimeException("return-page parameter has not been supplied");
+         }
+
+         // finally redirect
+         if (logger.isDebugEnabled())
+            logger.debug("Upload servicing complete, redirecting to: " + returnPage);
+
+         response.sendRedirect(returnPage);
+      }
+      catch (Throwable error)
+      {
+         Application.handleServletError(getServletContext(), (HttpServletRequest)request,
+               (HttpServletResponse)response, error, logger, returnPage);
+      }
+   }
+}