/************************************************************************
 *   IRC - Internet Relay Chat, modules/m_pong.c
 *
 *   Copyright (C) 2000-2003 TR-IRCD Development
 *
 *   Copyright (C) 1990 Jarkko Oikarinen and
 *                      University of Oulu, Co Center
 *
 *   See file AUTHORS in IRC package for additional names of
 *   the programmers.
 *
 *   This program is free softwmare; 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, 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, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* $Id: m_pong.c,v 1.3 2003/06/14 13:55:51 tr-ircd Exp $ */

#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "msg.h"
#include "channel.h"
#include "h.h"
#include "s_conf.h"

static char *token = TOK1_PONG;

static struct Message _msgtab[] = {
    {MSG_PONG, 0, MAXPARA, M_SLOW, 0L,
     m_unregistered, m_pong, m_pong, m_pong, m_pong}
};

#ifndef STATIC_MODULES

char *_version = "$Revision: 1.3 $";

void _modinit(void)
{
    mod_add_cmd(_msgtab);
    tok1_msgtab[(u_char) *token].msg = _msgtab;
}

void _moddeinit(void)
{
    mod_del_cmd(_msgtab);
    tok1_msgtab[(u_char) *token].msg = NULL;
}
#else
void m_pong_init(void)
{
    mod_add_cmd(_msgtab);
    tok1_msgtab[(u_char) *token].msg = _msgtab;
}
#endif

/*
 * * m_pong * parv[0] = sender prefix *       parv[1] = origin *
 * parv[2] = destination
 */
int m_pong(aClient *cptr, aClient *sptr, int parc, char *parv[])
{
    aClient *acptr;
    char *origin, *destination;

    if (parc < 2 || *parv[1] == '\0') {
	send_me_numeric(sptr, ERR_NOORIGIN);
	return 0;
    }

    origin = parv[1];
    destination = parv[2];
    cptr->flags &= ~FLAGS_PINGSENT;
    sptr->flags &= ~FLAGS_PINGSENT;

    /*
     * if it's my client and it's a server.. 
     */
    if (sptr == cptr && IsServer(cptr)) {
	if (sptr->flags & FLAGS_USERBURST) {
	    sptr->flags &= ~FLAGS_USERBURST;
	    sendto_gnotice
		("from %C: %s has processed user/channel burst, sending topic burst.",
		 &me, sptr->name);
	    send_topic_burst(sptr);
	    sptr->flags |= FLAGS_PINGSENT | FLAGS_SOBSENT;
	    sendto_one(sptr, "%s :%C", MSG_PING, &me);
	} else if (sptr->flags & FLAGS_TOPICBURST) {
	    sptr->flags &= ~FLAGS_TOPICBURST;
	    sendto_gnotice
		("from %C: %s has processed topic burst (synched to network data).",
		 &me, sptr->name);
	    sendto_serv_butone(sptr, &me, TOK1_GNOTICE,
				   ":%C has synched to network data.", sptr);
	}
    }

    /*
     * Now attempt to route the PONG, comstud pointed out routable PING
     * is used for SPING.  routable PING should also probably be left in
     * -Dianora That being the case, we will route, but only for
     * registered clients (a case can be made to allow them only from
     * servers). -Shadowfax
     */
    if (!BadPtr(destination) && irc_strcmp(destination, me.name) != 0 && IsRegistered(sptr)) {
	if ((acptr = find_client(destination)) || (acptr = find_server(destination)))
	    sendto_one(acptr, ":%C %s %s %s", sptr, MSG_PONG, origin, destination);

	else {
	    send_me_numeric(sptr, ERR_NOSUCHSERVER, destination);
	    return 0;
	}
    } 
    return 0;
}