diff -r f907866f0e4b -r 6fceb66e1ad7 org/sonews/web/SonewsConfigServlet.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org/sonews/web/SonewsConfigServlet.java	Fri Jun 26 16:48:50 2009 +0200
@@ -0,0 +1,239 @@
+/*
+ *   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.web;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.sonews.util.StringTemplate;
+import org.sonews.util.io.Resource;
+
+/**
+ * Servlet providing a configuration web interface.
+ * @author Christian Lins
+ * @since sonews/0.5.0
+ */
+public class SonewsConfigServlet extends AbstractSonewsServlet
+{
+  
+  private static final long serialVersionUID = 2432543253L;
+  
+  @Override
+  public void doGet(HttpServletRequest req, HttpServletResponse resp)
+    throws IOException
+  {
+    synchronized(this)
+    {
+      connectToNewsserver();
+      String which = req.getParameter("which");
+
+      if(which != null && which.equals("config"))
+      {
+        whichConfig(req, resp);
+      }
+      else if(which != null && which.equals("groupadd"))
+      {
+        whichGroupAdd(req, resp);
+      }
+      else if(which != null && which.equals("groupdelete"))
+      {
+        whichGroupDelete(req, resp);
+      }
+      else
+      {
+        whichNone(req, resp);
+      }
+
+      disconnectFromNewsserver();
+    }
+  }
+  
+  private void whichConfig(HttpServletRequest req, HttpServletResponse resp)
+    throws IOException
+  {
+    StringBuilder keys = new StringBuilder();
+
+    Set pnames = req.getParameterMap().keySet();
+    for(Object obj : pnames)
+    {
+      String pname = (String)obj;
+      if(pname.startsWith("configkey:"))
+      {
+        String value = req.getParameter(pname);
+        String key   = pname.split(":")[1];
+        if(!value.equals("<not set>"))
+        {
+          printlnToNewsserver("XDAEMON SET " + key + " " + value);
+          readlnFromNewsserver();
+          
+          keys.append(key); 
+          keys.append("<br/>");
+        }
+      }
+    }
+    
+    StringTemplate tmpl = getTemplate("ConfigUpdated.tmpl");
+    
+    tmpl.set("UPDATED_KEYS", keys.toString());
+    
+    resp.setStatus(HttpServletResponse.SC_OK);
+    resp.getWriter().println(tmpl.toString());
+    resp.getWriter().flush();
+  }
+  
+  private void whichGroupAdd(HttpServletRequest req, HttpServletResponse resp)
+    throws IOException
+  {
+    String[] groupnames = req.getParameter("groups").split("\n");
+    
+    for(String groupname : groupnames)
+    {
+      groupname = groupname.trim();
+      if(groupname.equals(""))
+      {
+        continue;
+      }
+
+      printlnToNewsserver("XDAEMON GROUPADD " + groupname + " 0");
+      String line = readlnFromNewsserver();
+      if(!line.startsWith("200 "))
+      {
+        System.out.println("Warning " + groupname + " probably not created!");
+      }
+    }
+    
+    StringTemplate tmpl = getTemplate("GroupAdded.tmpl");
+    
+    tmpl.set("GROUP", req.getParameter("groups"));
+    
+    resp.setStatus(HttpServletResponse.SC_OK);
+    resp.getWriter().println(tmpl.toString());
+    resp.getWriter().flush();
+  }
+  
+  private void whichGroupDelete(HttpServletRequest req, HttpServletResponse resp)
+    throws IOException
+  {
+    String groupname = req.getParameter("group");
+    printlnToNewsserver("XDAEMON GROUPDEL " + groupname);
+    String line = readlnFromNewsserver();
+    if(!line.startsWith("200 "))
+      throw new IOException(line);
+    
+    StringTemplate tmpl = getTemplate("GroupDeleted.tmpl");
+    
+    tmpl.set("GROUP", groupname);
+    
+    resp.setStatus(HttpServletResponse.SC_OK);
+    resp.getWriter().println(tmpl.toString());
+    resp.getWriter().flush();
+  }
+  
+  private void whichNone(HttpServletRequest req, HttpServletResponse resp)
+    throws IOException
+  {
+    StringTemplate tmpl = getTemplate("SonewsConfigServlet.tmpl");
+    
+    // Retrieve config keys from server
+    List<String> configKeys = new ArrayList<String>();
+    printlnToNewsserver("XDAEMON LIST CONFIGKEYS");
+    String line = readlnFromNewsserver();
+    if(!line.startsWith("200 "))
+      throw new IOException("XDAEMON command not supported!");
+    for(;;)
+    {
+      line = readlnFromNewsserver();
+      if(line.equals("."))
+        break;
+      else
+        configKeys.add(line);
+    }
+    
+    // Construct config table
+    StringBuilder strb = new StringBuilder();
+    for(String key : configKeys)
+    {
+      strb.append("<tr><td><code>");
+      strb.append(key);
+      strb.append("</code></td><td>");
+      
+      // Retrieve config value from server
+      String value = "<not set>";
+      printlnToNewsserver("XDAEMON GET " + key);
+      line = readlnFromNewsserver();
+      if(line.startsWith("200 "))
+      {
+        value = readlnFromNewsserver();
+        readlnFromNewsserver(); // Read the "."
+      }
+      
+      strb.append("<input type=text name=\"configkey:");
+      strb.append(key);
+      strb.append("\" value=\"");
+      strb.append(value);
+      strb.append("\"/></td></tr>");
+    }
+    tmpl.set("CONFIG", strb.toString());
+    
+    // Retrieve served newsgroup names from server
+    List<String> groups = new ArrayList<String>();
+    printlnToNewsserver("LIST");
+    line = readlnFromNewsserver();
+    if(line.startsWith("215 "))
+    {
+      for(;;)
+      {
+        line = readlnFromNewsserver();
+        if(line.equals("."))
+        {
+          break;
+        }
+        else
+        {
+          groups.add(line.split(" ")[0]);
+        }
+      }
+    }
+    else
+      throw new IOException("Error issuing LIST command!");
+    
+    // Construct groups list
+    StringTemplate tmplGroupList = new StringTemplate(
+      Resource.getAsString("org/sonews/web/tmpl/GroupList.tmpl", true));
+    strb = new StringBuilder();
+    for(String group : groups)
+    {
+      tmplGroupList.set("GROUPNAME", group);
+      strb.append(tmplGroupList.toString());
+    }
+    tmpl.set("GROUP", strb.toString());
+    
+    // Set server name
+    tmpl.set("SERVERNAME", hello.split(" ")[2]);
+    tmpl.set("TITLE", "Configuration");
+    
+    resp.getWriter().println(tmpl.toString());
+    resp.getWriter().flush();
+    resp.setStatus(HttpServletResponse.SC_OK);
+  }
+
+}