diff -r 6ae5e4f8329b -r c404a87db5b7 src/org/sonews/daemon/command/ListCommand.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/sonews/daemon/command/ListCommand.java	Sun Aug 29 17:43:58 2010 +0200
@@ -0,0 +1,153 @@
+/*
+ *   SONEWS News Server
+ *   see AUTHORS for the list of contributors
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sonews.daemon.command;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
+import org.sonews.daemon.NNTPConnection;
+import org.sonews.storage.Channel;
+import org.sonews.storage.StorageBackendException;
+import org.sonews.util.Log;
+
+/**
+ * Class handling the LIST command.
+ * @author Christian Lins
+ * @author Dennis Schwerdel
+ * @since n3tpd/0.1
+ */
+public class ListCommand implements Command
+{
+
+  @Override
+  public String[] getSupportedCommandStrings()
+  {
+    return new String[]{"LIST"};
+  }
+
+  @Override
+  public boolean hasFinished()
+  {
+    return true;
+  }
+
+  @Override
+  public String impliedCapability()
+  {
+    return null;
+  }
+
+  @Override
+  public boolean isStateful()
+  {
+    return false;
+  }
+  
+  @Override
+  public void processLine(NNTPConnection conn, final String line, byte[] raw)
+    throws IOException, StorageBackendException
+  {
+    final String[] command = line.split(" ");
+    
+    if(command.length >= 2)
+    {
+      if(command[1].equalsIgnoreCase("OVERVIEW.FMT"))
+      {
+        conn.println("215 information follows");
+        conn.println("Subject:\nFrom:\nDate:\nMessage-ID:\nReferences:\nBytes:\nLines:\nXref");
+        conn.println(".");
+      }
+      else if(command[1].equalsIgnoreCase("NEWSGROUPS"))
+      {
+        conn.println("215 information follows");
+        final List<Channel> list = Channel.getAll();
+        for (Channel g : list)
+        {
+          conn.println(g.getName() + "\t" + "-");
+        }
+        conn.println(".");
+      }
+      else if(command[1].equalsIgnoreCase("SUBSCRIPTIONS"))
+      {
+        conn.println("215 information follows");
+        conn.println(".");
+      }
+      else if(command[1].equalsIgnoreCase("EXTENSIONS"))
+      {
+        conn.println("202 Supported NNTP extensions.");
+        conn.println("LISTGROUP");
+        conn.println("XDAEMON");
+        conn.println("XPAT");
+        conn.println(".");
+      }
+      else if(command[1].equalsIgnoreCase("ACTIVE"))
+      {
+        String  pattern  = command.length == 2
+          ? null : command[2].replace("*", "\\w*");
+        printGroupInfo(conn, pattern);
+      }
+      else
+      {
+        conn.println("500 unknown argument to LIST command");
+      }
+    }
+    else
+    {
+      printGroupInfo(conn, null);
+    }
+  }
+
+  private void printGroupInfo(NNTPConnection conn, String pattern)
+    throws IOException, StorageBackendException
+  {
+    final List<Channel> groups = Channel.getAll();
+    if(groups != null)
+    {
+      conn.println("215 list of newsgroups follows");
+      for(Channel g : groups)
+      {
+        try
+        {
+          Matcher matcher = pattern == null ?
+            null : Pattern.compile(pattern).matcher(g.getName());
+          if(!g.isDeleted() &&
+            (matcher == null || matcher.find()))
+          {
+            String writeable = g.isWriteable() ? " y" : " n";
+            // Indeed first the higher article number then the lower
+            conn.println(g.getName() + " " + g.getLastArticleNumber() + " "
+              + g.getFirstArticleNumber() + writeable);
+          }
+        }
+        catch(PatternSyntaxException ex)
+        {
+          Log.get().info(ex.toString());
+        }
+      }
+      conn.println(".");
+    }
+    else
+    {
+      conn.println("500 server backend malfunction");
+    }
+  }
+
+}