/*
* Copyright (C) 2005 Luca Veltri - University of Parma - Italy
*
* This file is part of MjSip (http://www.mjsip.org)
*
* MjSip 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.
*
* MjSip 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 MjSip; 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 org.zoolu.sip.call;
import org.zoolu.sip.call.*;
import org.zoolu.sip.provider.*;
import org.zoolu.sip.message.*;
//import org.zoolu.sip.dialog.*;
import org.zoolu.sip.header.StatusLine;
import org.zoolu.sip.address.NameAddress;
import org.zoolu.sip.dialog.ExtendedInviteDialog;
import org.zoolu.sip.dialog.ExtendedInviteDialogListener;
import org.zoolu.tools.Log;
import org.zoolu.tools.LogLevel;
import org.zoolu.sdp.*;
import java.util.Vector;
/** Class ExtendedCall extends basic SIP calls.
* <p>It implements:
* <br>- call transfer (REFER/NOTIFY methods)
*/
public class ExtendedCall extends Call implements ExtendedInviteDialogListener
{
ExtendedCallListener xcall_listener;
Message refer;
/** User name. */
String username;
/** User name. */
String realm;
/** User's passwd. */
String passwd;
/** Nonce for the next authentication. */
String next_nonce;
/** Qop for the next authentication. */
String qop;
/** Creates a new ExtendedCall. */
public ExtendedCall(SipProvider sip_provider, String from_url, String contact_url, ExtendedCallListener call_listener)
{ super(sip_provider,from_url,contact_url,call_listener);
this.xcall_listener=call_listener;
this.refer=null;
this.username=null;
this.realm=null;
this.passwd=null;
this.next_nonce=null;
this.qop=null;
}
/** Creates a new ExtendedCall specifing the sdp. */
/*public ExtendedCall(SipProvider sip_provider, String from_url, String contact_url, String sdp, ExtendedCallListener call_listener)
{ super(sip_provider,from_url,contact_url,sdp,call_listener);
xcall_listener=call_listener;
}*/
/** Creates a new ExtendedCall. */
public ExtendedCall(SipProvider sip_provider, String from_url, String contact_url, String username, String realm, String passwd, ExtendedCallListener call_listener)
{ super(sip_provider,from_url,contact_url,call_listener);
this.xcall_listener=call_listener;
this.refer=null;
this.username=username;
this.realm=realm;
this.passwd=passwd;
this.next_nonce=null;
this.qop=null;
}
/** Waits for an incoming call */
public void listen()
{ if (username!=null) dialog=new ExtendedInviteDialog(sip_provider,username,realm,passwd,this);
else dialog=new ExtendedInviteDialog(sip_provider,this);
dialog.listen();
}
/** Starts a new call, inviting a remote user (<i>r_user</i>) */
public void call(String r_user, String from, String contact, String sdp)
{ printLog("calling "+r_user,LogLevel.MEDIUM);
if (username!=null) dialog=new ExtendedInviteDialog(sip_provider,username,realm,passwd,this);
else dialog=new ExtendedInviteDialog(sip_provider,this);
if (from==null) from=from_url;
if (contact==null) contact=contact_url;
if (sdp!=null) local_sdp=sdp;
if (local_sdp!=null)
dialog.invite(r_user,from,contact,local_sdp);
else dialog.inviteWithoutOffer(r_user,from,contact);
}
/** Starts a new call with the <i>invite</i> message request */
public void call(Message invite)
{ dialog=new ExtendedInviteDialog(sip_provider,this);
local_sdp=invite.getBody();
if (local_sdp!=null)
dialog.invite(invite);
else dialog.inviteWithoutOffer(invite);
}
/** Requests a call transfer */
public void transfer(String transfer_to)
{ ((ExtendedInviteDialog)dialog).refer(new NameAddress(transfer_to));
}
/** Accepts a call transfer request */
public void acceptTransfer()
{ ((ExtendedInviteDialog)dialog).acceptRefer(refer);
}
/** Refuses a call transfer request */
public void refuseTransfer()
{ ((ExtendedInviteDialog)dialog).refuseRefer(refer);
}
/** Notifies the satus of an other call */
public void notify(int code, String reason)
{ ((ExtendedInviteDialog)dialog).notify(code,reason);
}
// ************** Inherited from InviteDialogListener **************
/** When an incoming REFER request is received within the dialog */
public void onDlgRefer(org.zoolu.sip.dialog.InviteDialog d, NameAddress refer_to, NameAddress referred_by, Message msg)
{ if (d!=dialog) { printLog("NOT the current dialog",LogLevel.HIGH); return; }
printLog("onDlgRefer("+refer_to.toString()+")",LogLevel.LOW);
refer=msg;
if (xcall_listener!=null) xcall_listener.onCallTransfer(this,refer_to,referred_by,msg);
}
/** When a response is received for a REFER request within the dialog */
public void onDlgReferResponse(org.zoolu.sip.dialog.InviteDialog d, int code, String reason, Message msg)
{ if (d!=dialog) { printLog("NOT the current dialog",LogLevel.HIGH); return; }
printLog("onDlgReferResponse("+code+" "+reason+")",LogLevel.LOW);
if (code>=200 && code <300)
{ if(xcall_listener!=null) xcall_listener.onCallTransferAccepted(this,msg);
}
else
if (code>=300)
{ if(xcall_listener!=null) xcall_listener.onCallTransferRefused(this,reason,msg);
}
}
/** When an incoming NOTIFY request is received within the dialog */
public void onDlgNotify(org.zoolu.sip.dialog.InviteDialog d, String event, String sipfragment, Message msg)
{ if (d!=dialog) { printLog("NOT the current dialog",LogLevel.HIGH); return; }
printLog("onDlgNotify("+event.substring(0,5)+")",LogLevel.LOW);
//if (event.equals("refer"))
if (event.substring(0,5).equals("refer"))
{ Message fragment=new Message(sipfragment);
printLog("Notify: "+sipfragment,LogLevel.LOW);
if (fragment.isResponse())
{ StatusLine status_line=fragment.getStatusLine();
int code=status_line.getCode();
String reason=status_line.getReason();
if (code>=180 && code<300)
{ printLog("Call successfully transferred",LogLevel.LOW);
if(xcall_listener!=null) xcall_listener.onCallTransferSuccess(this,msg);
}
else
if (code>=300)
{ printLog("Call NOT transferred",LogLevel.LOW);
if(xcall_listener!=null) xcall_listener.onCallTransferFailure(this,reason,msg);
}
}
}
}
/** When an incoming request is received within the dialog
* different from INVITE, CANCEL, ACK, BYE */
public void onDlgAltRequest(org.zoolu.sip.dialog.InviteDialog d, String method, String body, Message msg)
{
}
/** When a response is received for a request within the dialog
* different from INVITE, CANCEL, ACK, BYE */
public void onDlgAltResponse(org.zoolu.sip.dialog.InviteDialog d, String method, int code, String reason, String body, Message msg)
{
}
//**************************** Logs ****************************/
/** Adds a new string to the default Log */
protected void printLog(String str, int level)
{ if (log!=null) log.println("ExtendedCall: "+str,level+SipStack.LOG_LEVEL_CALL);
}
}