Start line:  
End line:  

Snippet Preview

Snippet HTML Code

Stack Overflow Questions
  /*
   * Copyright (c) 2003 The Visigoth Software Society. All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * 3. The end-user documentation included with the redistribution, if
  *    any, must include the following acknowledgement:
  *       "This product includes software developed by the
  *        Visigoth Software Society (http://www.visigoths.org/)."
  *    Alternately, this acknowledgement may appear in the software itself,
  *    if and wherever such third-party acknowledgements normally appear.
  *
  * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the 
  *    project contributors may be used to endorse or promote products derived
  *    from this software without prior written permission. For written
  *    permission, please contact visigoths@visigoths.org.
  *
  * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
  *    nor may "FreeMarker" or "Visigoth" appear in their names
  *    without prior written permission of the Visigoth Software Society.
  *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED.  IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  * ====================================================================
  *
  * This software consists of voluntary contributions made by many
  * individuals on behalf of the Visigoth Software Society. For more
  * information on the Visigoth Software Society, please see
  * http://www.visigoths.org/
  */
 
 package freemarker.debug;
 
 import java.util.List;
 
A utility class that allows you to connect to the FreeMarker debugger service running on a specific host and port.

Author(s):
Attila Szegedi
Version:
$Id: DebuggerClient.java,v 1.3.2.1 2006/11/27 07:54:19 szegedia Exp $
 
 public class DebuggerClient
 {
     private DebuggerClient()
     {
     }
    
    
Connects to the FreeMarker debugger service running on a specific host and port. The Java VM to which the connection is made must have defined the system property freemarker.debug.password in order to enable the debugger service. Additionally, the freemarker.debug.port system property can be set to specify the port where the debugger service is listening. When not specified, it defaults to Debugger.DEFAULT_PORT.

Parameters:
host the host address of the machine where the debugger service is running.
port the port of the debugger service
password the password required to connect to the debugger service
Returns:
Debugger a debugger object. null is returned in case incorrect password was supplied.
Throws:
java.io.IOException if an exception occurs.
 
     public static Debugger getDebugger(InetAddress hostint portString password)
     throws
         IOException
    {
        try
        {
            Socket s = new Socket(hostport);
            try
            {
                ObjectOutputStream out = new ObjectOutputStream(s.getOutputStream());
                ObjectInputStream in = new ObjectInputStream(s.getInputStream());
                int protocolVersion = in.readInt();
                if(protocolVersion > 220)
                {
                    throw new IOException(
                        "Incompatible protocol version " + protocolVersion + 
                        ". At most 220 was expected.");
                }
                byte[] challenge = (byte[])in.readObject();
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(password.getBytes("UTF-8"));
                md.update(challenge);
                out.writeObject(md.digest());
                return new LocalDebuggerProxy((Debugger)in.readObject());
                //return (Debugger)in.readObject();
            }
            finally
            {
                s.close();
            }
        }
        catch(IOException e)
        {
            throw e;
        }
        catch(Exception e)
        {
            throw new UndeclaredThrowableException(e); 
        }
    }
    
    private static class LocalDebuggerProxy implements Debugger
    {
        private final Debugger remoteDebugger;
        LocalDebuggerProxy(Debugger remoteDebugger)
        {
            this. = remoteDebugger;
        }
        public void addBreakpoint(Breakpoint breakpointthrows RemoteException
        {
            .addBreakpoint(breakpoint);
        }
        public Object addDebuggerListener(DebuggerListener listener
        throws RemoteException
        {
            if(listener instanceof RemoteObject)
            {
                return .addDebuggerListener(listener);
            }
            else
            {
                RmiDebuggerListenerImpl remotableListener = 
                    new RmiDebuggerListenerImpl(listener);
                return .addDebuggerListener(remotableListener);
            }
        }
        public List getBreakpoints() throws RemoteException
        {
            return .getBreakpoints();
        }
        public List getBreakpoints(String templateNamethrows RemoteException
        {
            return .getBreakpoints(templateName);
        }
        public Collection getSuspendedEnvironments() throws RemoteException
        {
            return .getSuspendedEnvironments();
        }
        public void removeBreakpoint(Breakpoint breakpointthrows RemoteException
        {
            .removeBreakpoint(breakpoint);
        }
        public void removeBreakpoints(String templateNamethrows RemoteException
        {
            .removeBreakpoints(templateName);
        }
        public void removeBreakpoints() throws RemoteException
        {
            .removeBreakpoints();
        }
        public void removeDebuggerListener(Object idthrows RemoteException
        {
            .removeDebuggerListener(id);
        }
    }
New to GrepCode? Check out our FAQ X