/* | |
* Licensed to the Apache Software Foundation (ASF) under one or more | |
* contributor license agreements. 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. For additional information regarding | |
* copyright in this work, please see the NOTICE file in the top level | |
* directory of this distribution. | |
*/ | |
package org.apache.roller.weblogger.ui.rendering.servlets; | |
import java.io.IOException; | |
import java.io.PrintWriter; | |
import javax.servlet.ServletConfig; | |
import javax.servlet.ServletException; | |
import javax.servlet.http.HttpServlet; | |
import javax.servlet.http.HttpServletRequest; | |
import javax.servlet.http.HttpServletResponse; | |
import org.apache.commons.logging.Log; | |
import org.apache.commons.logging.LogFactory; | |
import org.apache.roller.weblogger.config.WebloggerConfig; | |
import org.apache.roller.weblogger.ui.rendering.plugins.comments.CommentAuthenticator; | |
import org.apache.roller.weblogger.ui.rendering.plugins.comments.DefaultCommentAuthenticator; | |
/** | |
* The CommentAuthenticatorServlet is used for generating the html used for | |
* comment authentication. This is done outside of the normal rendering process | |
* so that we can cache full pages and still set the comment authentication | |
* section dynamically. | |
*/ | |
public class CommentAuthenticatorServlet extends HttpServlet { | |
private static Log mLogger = | |
LogFactory.getLog(CommentAuthenticatorServlet.class); | |
private CommentAuthenticator authenticator = null; | |
/** | |
* Handle incoming http GET requests. | |
* | |
* We only handle get requests. | |
*/ | |
public void doGet(HttpServletRequest request, HttpServletResponse response) | |
throws IOException, ServletException { | |
response.setContentType("text/html; charset=utf-8"); | |
// Convince proxies and IE not to cache this. | |
response.addHeader("Pragma", "no-cache"); | |
response.addHeader("Cache-Control", "no-cache"); | |
response.addHeader("Expires", "Thu, 01 Jan 1970 00:00:00 GMT"); | |
PrintWriter out = response.getWriter(); | |
out.println(this.authenticator.getHtml(request)); | |
} | |
/** | |
* Initialization. | |
*/ | |
public void init(ServletConfig config) throws ServletException { | |
super.init(config); | |
// lookup the authenticator we are going to use and instantiate it | |
try { | |
String name = WebloggerConfig.getProperty("comment.authenticator.classname"); | |
Class clazz = Class.forName(name); | |
this.authenticator = (CommentAuthenticator) clazz.newInstance(); | |
} catch(Exception e) { | |
mLogger.error(e); | |
this.authenticator = new DefaultCommentAuthenticator(); | |
} | |
} | |
/** | |
* Destruction. | |
*/ | |
public void destroy() {} | |
} |