1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/org/sonews/daemon/command/GroupCommand.java	Sun Aug 29 17:43:58 2010 +0200
     1.3 @@ -0,0 +1,102 @@
     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.daemon.command;
    1.23 +
    1.24 +import java.io.IOException;
    1.25 +import org.sonews.daemon.NNTPConnection;
    1.26 +import org.sonews.storage.Channel;
    1.27 +import org.sonews.storage.StorageBackendException;
    1.28 +
    1.29 +/**
    1.30 + * Class handling the GROUP command.
    1.31 + * <pre>
    1.32 + *  Syntax
    1.33 + *    GROUP group
    1.34 + *
    1.35 + *  Responses
    1.36 + *    211 number low high group     Group successfully selected
    1.37 + *    411                           No such newsgroup
    1.38 + *
    1.39 + *  Parameters
    1.40 + *    group     Name of newsgroup
    1.41 + *    number    Estimated number of articles in the group
    1.42 + *    low       Reported low water mark
    1.43 + *    high      Reported high water mark
    1.44 + * </pre>
    1.45 + * (from RFC 3977)
    1.46 + * 
    1.47 + * @author Christian Lins
    1.48 + * @author Dennis Schwerdel
    1.49 + * @since n3tpd/0.1
    1.50 + */
    1.51 +public class GroupCommand implements Command
    1.52 +{
    1.53 +
    1.54 +  @Override
    1.55 +  public String[] getSupportedCommandStrings()
    1.56 +  {
    1.57 +    return new String[]{"GROUP"};
    1.58 +  }
    1.59 +
    1.60 +  @Override
    1.61 +  public boolean hasFinished()
    1.62 +  {
    1.63 +    return true;
    1.64 +  }
    1.65 +
    1.66 +  @Override
    1.67 +  public String impliedCapability()
    1.68 +  {
    1.69 +    return null;
    1.70 +  }
    1.71 +
    1.72 +  @Override
    1.73 +  public boolean isStateful()
    1.74 +  {
    1.75 +    return true;
    1.76 +  }
    1.77 +  
    1.78 +  @Override
    1.79 +  public void processLine(NNTPConnection conn, final String line, byte[] raw)
    1.80 +    throws IOException, StorageBackendException
    1.81 +  {
    1.82 +    final String[] command = line.split(" ");
    1.83 +
    1.84 +    Channel group;
    1.85 +    if(command.length >= 2)
    1.86 +    {
    1.87 +      group = Channel.getByName(command[1]);
    1.88 +      if(group == null || group.isDeleted())
    1.89 +      {
    1.90 +        conn.println("411 no such news group");
    1.91 +      }
    1.92 +      else
    1.93 +      {
    1.94 +        conn.setCurrentGroup(group);
    1.95 +        conn.println("211 " + group.getPostingsCount() + " " + group.getFirstArticleNumber()
    1.96 +          + " " + group.getLastArticleNumber() + " " + group.getName() + " group selected");
    1.97 +      }
    1.98 +    }
    1.99 +    else
   1.100 +    {
   1.101 +      conn.println("500 no group name given");
   1.102 +    }
   1.103 +  }
   1.104 +
   1.105 +}