/*
* 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.header;
import org.zoolu.sip.address.*;
import org.zoolu.sip.provider.SipParser;
import org.zoolu.tools.Parser;
import org.zoolu.tools.DateFormat;
import java.util.Date;
//import java.text.DateFormat;
//import java.text.SimpleDateFormat;
/** SIP Header Contact.
* The Contact header field provides a SIP or SIPS URI that can be used
* to contact that specific instance of the UA for subsequent requests.
* The Contact header field MUST be present and contain exactly one SIP
* URI in any request that can result in the establishment of a
* dialog (i.e. INVITEs).
* <p> Note: for backward compatibility with legacy implementations
* the date format in 'expires' parameter is still supported
* although it has been deprecated in RFC 3261.
*/
public class ContactHeader extends EndPointHeader
{
/** Creates a ContactHeader with '*' as contact value */
public ContactHeader()
{ super(new Header(SipHeaders.Contact,null));
value="*";
}
public ContactHeader(NameAddress nameaddr)
{ super(SipHeaders.Contact,nameaddr);
}
public ContactHeader(SipURL url)
{ super(SipHeaders.Contact,url);
}
public ContactHeader(Header hd)
{ super(hd);
}
//public void setStar()
//{ value="*";
//}
public ContactHeader setExpires(Date expire)
{ setParameter("expires","\""+DateFormat.formatEEEddMMM(expire)+"\"");
return this;
}
public ContactHeader setExpires(int secs)
{ setParameter("expires",Integer.toString(secs));
return this;
}
public boolean isStar()
{ if (value.indexOf('*')>=0) return true;
else return false;
}
public boolean hasExpires()
{ return hasParameter("expires");
}
public boolean isExpired()
{ if (getExpires()==0) return true;
else return false;
}
public int getExpires()
{ int secs=-1;
String exp_param=getParameter("expires");
if (exp_param!=null)
{ if (exp_param.indexOf("GMT")>=0)
{ Date date=(new SipParser((new Parser(exp_param)).getStringUnquoted())).getDate();
secs=(int)((date.getTime()-System.currentTimeMillis())/1000);
if (secs<0) secs=0;
}
else secs=(new SipParser(exp_param)).getInt();
}
return secs;
}
public Date getExpiresDate()
{ Date date=null;
String exp_param=getParameter("expires");
if (exp_param!=null)
{ if (exp_param.indexOf("GMT")>=0)
{ date=(new SipParser((new Parser(exp_param)).getStringUnquoted())).getDate();
}
else
{ long secs=(new SipParser(exp_param)).getInt();
if (secs>=0) date=new Date(System.currentTimeMillis()+secs*1000);
}
}
return date;
}
public ContactHeader removeExpires()
{ removeParameter("expires");
return this;
}
/*
public static String toString(Vector clist)
{ String str="Contact: ";
for (int i=0; i<clist.size(); i++)
{ ContactHeader ch=(ContactHeader)(clist.elementAt(i));
str+=ch;
if (i<(clist.size()-1)) str+=", ";
}
return str+"\r\n";
}
*/
}