1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/org/sonews/web/AbstractSonewsServlet.java	Wed Jul 01 10:48:22 2009 +0200
     1.3 @@ -0,0 +1,113 @@
     1.4 +/*
     1.5 + *   SONEWS News Server
     1.6 + *   see AUTHORS for the list of contributors
     1.7 + *
     1.8 + *   This program is free software: you can redistribute it and/or modify
     1.9 + *   it under the terms of the GNU General Public License as published by
    1.10 + *   the Free Software Foundation, either version 3 of the License, or
    1.11 + *   (at your option) any later version.
    1.12 + *
    1.13 + *   This program is distributed in the hope that it will be useful,
    1.14 + *   but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 + *   GNU General Public License for more details.
    1.17 + *
    1.18 + *   You should have received a copy of the GNU General Public License
    1.19 + *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
    1.20 + */
    1.21 +
    1.22 +package org.sonews.web;
    1.23 +
    1.24 +import java.io.BufferedReader;
    1.25 +import java.io.IOException;
    1.26 +import java.io.InputStreamReader;
    1.27 +import java.io.PrintWriter;
    1.28 +import java.net.Socket;
    1.29 +import javax.servlet.http.HttpServlet;
    1.30 +import org.sonews.util.StringTemplate;
    1.31 +import org.sonews.util.io.Resource;
    1.32 +
    1.33 +/**
    1.34 + * Base class for all sonews servlets.
    1.35 + * @author Christian Lins
    1.36 + * @since sonews/0.5.0
    1.37 + */
    1.38 +public class AbstractSonewsServlet extends HttpServlet
    1.39 +{
    1.40 +
    1.41 +  public static final String TemplateRoot = "org/sonews/web/tmpl/";
    1.42 +  
    1.43 +  protected String        hello = null;
    1.44 +  
    1.45 +  private BufferedReader  in     = null;
    1.46 +  private PrintWriter     out    = null;
    1.47 +  private Socket          socket = null;
    1.48 +  
    1.49 +  protected void connectToNewsserver()
    1.50 +    throws IOException
    1.51 +  {
    1.52 +    // Get sonews port from properties
    1.53 +    String port = System.getProperty("sonews.port", "9119");
    1.54 +    String host = System.getProperty("sonews.host", "localhost");
    1.55 +    
    1.56 +    try
    1.57 +    {
    1.58 +      this.socket = new Socket(host, Integer.parseInt(port));
    1.59 +
    1.60 +      this.in     = new BufferedReader(
    1.61 +        new InputStreamReader(socket.getInputStream()));
    1.62 +      this.out = new PrintWriter(socket.getOutputStream());
    1.63 +
    1.64 +      hello = in.readLine(); // Read hello message
    1.65 +    }
    1.66 +    catch(IOException ex)
    1.67 +    {
    1.68 +      System.out.println("sonews.host=" + host);
    1.69 +      System.out.println("sonews.port=" + port);
    1.70 +      System.out.flush();
    1.71 +      throw ex;
    1.72 +    }
    1.73 +  }
    1.74 +  
    1.75 +  protected void disconnectFromNewsserver()
    1.76 +  {
    1.77 +    try
    1.78 +    {
    1.79 +      printlnToNewsserver("QUIT");
    1.80 +      out.close();
    1.81 +      readlnFromNewsserver(); // Wait for bye message
    1.82 +      in.close();
    1.83 +      socket.close();
    1.84 +    }
    1.85 +    catch(IOException ex)
    1.86 +    {
    1.87 +      ex.printStackTrace();
    1.88 +    }
    1.89 +  }
    1.90 +  
    1.91 +  protected StringTemplate getTemplate(String res)
    1.92 +  {
    1.93 +    StringTemplate tmpl = new StringTemplate(
    1.94 +      Resource.getAsString(TemplateRoot + "AbstractSonewsServlet.tmpl", true));
    1.95 +    String content    = Resource.getAsString(TemplateRoot + res, true);
    1.96 +    String stylesheet = System.getProperty("sonews.web.stylesheet", "style.css");
    1.97 +    
    1.98 +    tmpl.set("CONTENT", content);
    1.99 +    tmpl.set("STYLESHEET", stylesheet);
   1.100 +    
   1.101 +    return new StringTemplate(tmpl.toString());
   1.102 +  }
   1.103 +  
   1.104 +  protected void printlnToNewsserver(final String line)
   1.105 +  {
   1.106 +    this.out.println(line);
   1.107 +    this.out.flush();
   1.108 +  }
   1.109 +  
   1.110 +  protected String readlnFromNewsserver()
   1.111 +    throws IOException
   1.112 +  {
   1.113 +    return this.in.readLine();
   1.114 +  }
   1.115 +  
   1.116 +}