141 lines
4.4 KiB
C
141 lines
4.4 KiB
C
/*
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* NeoIRCd: NeoStats Group. Based on Hybird7
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* m_svinfo.c: Sends TS information for clock & compatibility checks.
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*
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* Copyright (C) 2002 by the past and present ircd coders, and others.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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* $Id: m_svinfo.c,v 1.4 2002/09/13 16:30:03 fishwaldo Exp $
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*/
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#include "stdinc.h"
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#include "handlers.h"
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#include "client.h"
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#include "common.h" /* TRUE bleah */
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#include "irc_string.h"
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#include "ircd.h"
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#include "numeric.h"
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#include "send.h"
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#include "s_conf.h"
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#include "s_log.h"
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#include "msg.h"
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#include "parse.h"
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#include "modules.h"
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static void ms_svinfo(struct Client*, struct Client*, int, char**);
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struct Message svinfo_msgtab = {
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"SVINFO", 0, 0, 4, 0, MFLG_SLOW, 0,
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{m_unregistered, m_ignore, ms_svinfo, m_ignore}
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};
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#ifndef STATIC_MODULES
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void
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_modinit(void)
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{
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mod_add_cmd(&svinfo_msgtab);
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}
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void
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_moddeinit(void)
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{
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mod_del_cmd(&svinfo_msgtab);
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}
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const char *_version = "$Revision: 1.4 $";
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#endif
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/*
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* ms_svinfo - SVINFO message handler
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* parv[0] = sender prefix
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* parv[1] = TS_CURRENT for the server
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* parv[2] = TS_MIN for the server
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* parv[3] = server is standalone or connected to non-TS only
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* parv[4] = server's idea of UTC time
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*/
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static void ms_svinfo(struct Client *client_p, struct Client *source_p,
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int parc, char *parv[])
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{
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time_t deltat;
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time_t theirtime;
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if (MyConnect(source_p) && IsUnknown(source_p))
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{
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exit_client(source_p, source_p, source_p, "Need SERVER before SVINFO");
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return;
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}
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if (!IsServer(source_p) || !MyConnect(source_p) || parc < 5)
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return;
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if (TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN)
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{
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/*
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* a server with the wrong TS version connected; since we're
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* TS_ONLY we can't fall back to the non-TS protocol so
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* we drop the link -orabidoo
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*/
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sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_ADMIN,
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"Link %s dropped, wrong TS protocol version (%s,%s)",
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get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
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sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_OPER,
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"Link %s dropped, wrong TS protocol version (%s,%s)",
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get_client_name(source_p, MASK_IP), parv[1], parv[2]);
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exit_client(source_p, source_p, source_p, "Incompatible TS version");
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return;
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}
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/*
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* since we're here, might as well set CurrentTime while we're at it
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*/
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set_time();
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theirtime = atol(parv[4]);
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deltat = abs(theirtime - CurrentTime);
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if (deltat > ConfigFileEntry.ts_max_delta)
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{
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sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_ADMIN,
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"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
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get_client_name(source_p, SHOW_IP),
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(unsigned long) CurrentTime,
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(unsigned long) theirtime,
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(int) deltat);
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sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_OPER,
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"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
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get_client_name(source_p, MASK_IP),
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(unsigned long) CurrentTime,
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(unsigned long) theirtime,
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(int) deltat);
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ilog(L_NOTICE,
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"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
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get_client_name(source_p, SHOW_IP),
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(unsigned long) CurrentTime,
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(unsigned long) theirtime,
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(int) deltat);
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exit_client(source_p, source_p, source_p, "Excessive TS delta");
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return;
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}
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if (deltat > ConfigFileEntry.ts_warn_delta)
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{
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sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_ALL,
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"Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
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source_p->name,
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(unsigned long) CurrentTime,
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(unsigned long) theirtime,
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(int) deltat);
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}
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}
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