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/*
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
*
* Copyright (c) 1997-2014 ircd-hybrid development team
*
* This program 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
/*! \file m_svinfo.c
* \brief Includes required functions for processing the SVINFO command.
* \version $Id$
*/
#include "stdinc.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "send.h"
#include "conf.h"
#include "log.h"
#include "parse.h"
#include "modules.h"
/*
* ms_svinfo - SVINFO message handler
* parv[0] = sender prefix
* parv[1] = TS_CURRENT for the server
* parv[2] = TS_MIN for the server
* parv[3] = server is standalone or connected to non-TS only
* parv[4] = server's idea of UTC time
*/
static int
ms_svinfo(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
time_t deltat;
time_t theirtime;
if (MyConnect(source_p) && IsUnknown(source_p))
{
exit_client(source_p, source_p, "Need SERVER before SVINFO");
return 0;
}
if (!IsServer(source_p) || !MyConnect(source_p))
return 0;
if (TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN)
{
/*
* a server with the wrong TS version connected; since we're
* TS_ONLY we can't fall back to the non-TS protocol so
* we drop the link -orabidoo
*/
sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
"Link %s dropped, wrong TS protocol version (%s,%s)",
get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
"Link %s dropped, wrong TS protocol version (%s,%s)",
get_client_name(source_p, MASK_IP), parv[1], parv[2]);
exit_client(source_p, source_p, "Incompatible TS version");
return 0;
}
/*
* since we're here, might as well set CurrentTime while we're at it
*/
set_time();
theirtime = atol(parv[4]);
deltat = abs(theirtime - CurrentTime);
if (deltat > ConfigFileEntry.ts_max_delta)
{
sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
get_client_name(source_p, SHOW_IP),
(unsigned long) CurrentTime,
(unsigned long) theirtime,
(int) deltat);
sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
get_client_name(source_p, MASK_IP),
(unsigned long) CurrentTime,
(unsigned long) theirtime,
(int) deltat);
ilog(LOG_TYPE_IRCD,
"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
get_client_name(source_p, SHOW_IP),
(unsigned long) CurrentTime,
(unsigned long) theirtime,
(int) deltat);
exit_client(source_p, source_p, "Excessive TS delta");
return 0;
}
if (deltat > ConfigFileEntry.ts_warn_delta)
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
"Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
source_p->name,
(unsigned long) CurrentTime,
(unsigned long) theirtime,
(int) deltat);
return 0;
}
static struct Message svinfo_msgtab =
{
"SVINFO", 0, 0, 5, MAXPARA, MFLG_SLOW, 0,
{ m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore }
};
static void
module_init(void)
{
mod_add_cmd(&svinfo_msgtab);
}
static void
module_exit(void)
{
mod_del_cmd(&svinfo_msgtab);
}
struct module module_entry =
{
.node = { NULL, NULL, NULL },
.name = NULL,
.version = "$Revision$",
.handle = NULL,
.modinit = module_init,
.modexit = module_exit,
.flags = 0
};
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