/*
* Copyright (C) 2005 Luca Veltri - University of Parma - Italy
*
* This source code 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 2 of the License, or
* (at your option) any later version.
*
* This source code 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 source code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author(s):
* Luca Veltri (luca.veltri@unipr.it)
*/
package local.server;
import org.zoolu.sip.address.*;
import org.zoolu.sip.provider.*;
import org.zoolu.sip.message.*;
import org.zoolu.sip.header.RequestLine;
import org.zoolu.sip.header.Header;
import org.zoolu.sip.header.ViaHeader;
import org.zoolu.sip.header.ContactHeader;
import org.zoolu.sip.header.MultipleHeader;
import org.zoolu.sip.header.RouteHeader;
import org.zoolu.sip.header.SipHeaders;
import org.zoolu.tools.LogLevel;
import java.util.Enumeration;
import java.util.Vector;
/** Class Redirect implement a SIP edirect server.
* It extends class Registrar. A Redirect can work as simply SIP redirect,
* or it can handle calls for registered users.
*/
public class Redirect extends Registrar
{
/** Costructs a new Redirect that acts also as location server for registered users. */
public Redirect(SipProvider provider, ServerProfile server_profile)
{ super(provider,server_profile);
}
/** When a new request message is received for a local user */
public void processRequestToLocalUser(Message msg)
{ printLog("inside processRequestToLocalUser(msg)",LogLevel.MEDIUM);
// message targets
Vector contacts=getTargets(msg);
if (contacts.isEmpty())
{ printLog("No target found, message discarded",LogLevel.HIGH);
if (!msg.isAck()) sip_provider.sendMessage(MessageFactory.createResponse(msg,404,SipResponses.reasonOf(404),null));
return;
}
printLog("message will be redirect to all user's contacts",LogLevel.MEDIUM);
// create the response with all contact urls, and send it
MultipleHeader mc=new MultipleHeader(SipHeaders.Contact,contacts);
mc.setCommaSeparated(true);
Message resp=MessageFactory.createResponse(msg,302,SipResponses.reasonOf(302),null);
resp.setContacts(mc);
sip_provider.sendMessage(resp);
}
/** When a new request message is received for a remote UA */
public void processRequestToRemoteUA(Message msg)
{ printLog("inside processRequestToRemoteUA(msg)",LogLevel.MEDIUM);
printLog("request not for local server",LogLevel.HIGH);
if (!msg.isAck()) sip_provider.sendMessage(MessageFactory.createResponse(msg,404,SipResponses.reasonOf(404),null));
else printLog("message discarded",LogLevel.HIGH);
}
/** When a new response message is received */
public void processResponse(Message resp)
{ printLog("inside processResponse(msg)",LogLevel.MEDIUM);
printLog("request not for local server: message discarded",LogLevel.HIGH);
}
// ****************************** Logs *****************************
/** Adds a new string to the default Log */
private void printLog(String str, int level)
{ if (log!=null) log.println("Redirect: "+str,level+SipStack.LOG_LEVEL_UA);
}
// ****************************** MAIN *****************************
/** The main method. */
public static void main(String[] args)
{
String file=null;
for (int i=0; i<args.length; i++)
{ if (args[i].equals("-f") && args.length>(i+1))
{ file=args[++i];
continue;
}
if (args[i].equals("-h"))
{ System.out.println("usage:\n java Redirect [-f <config_file>] \n");
System.exit(0);
}
}
SipStack.init(file);
SipProvider sip_provider=new SipProvider(file);
ServerProfile server_profile=new ServerProfile(file);
new Redirect(sip_provider,server_profile);
}
}