/**
* Copyright 2010 Daniel Guermeur and Amy Unruh
*
* 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.
*
* See http://connectrapp.appspot.com/ for a demo, and links to more information
* about this app and the book that it accompanies.
*/
package com.metadot.book.connectr.server.servlets;
import java.io.IOException;
import java.util.logging.Logger;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.http.RequestToken;
import com.metadot.book.connectr.server.AppLib;
import com.metadot.book.connectr.server.utils.AuthenticationProvider;
@SuppressWarnings("serial") public class LoginTwitterServlet extends LoginSuperServlet {
private static Logger log = Logger.getLogger(LoginTwitterServlet.class
.getName());
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException {
Twitter twitter = new TwitterFactory().getInstance();
// get auth info from system properties
String key = AuthenticationProvider.getProp("twitter-consumer-key");
String secret = AuthenticationProvider.getProp("twitter-consumer-secret");
if(key == null || secret == null){
response.setContentType("text/html");
response.getWriter().print(AppLib.INFONOTFOUND);
return;
}
try {
twitter.setOAuthConsumer(key, secret);
String callbackURL = buildCallBackURL(request, AuthenticationProvider.TWITTER);
RequestToken token = twitter.getOAuthRequestToken(callbackURL);
request.getSession().setAttribute("requestToken", token);
String loginURL = token.getAuthenticationURL() + "&force_login=true";
log.info("Redirecting to: " + loginURL);
response.sendRedirect(loginURL);
} catch (TwitterException e) {
response.setContentType("text/html");
response.getWriter().print("<p>" + e.getMessage() + "</p>");
response.getWriter().print(AppLib.INFONOTFOUND);
return;
// e.printStackTrace();
}
}
}