110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
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/*
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* ircd-ratbox: A slightly useful ircd.
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* m_svinfo.c: Sends TS information for clock & compatibility checks.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2012 ircd-ratbox development team
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*
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* $Id: m_svinfo.c 28677 2015-09-29 17:51:20Z androsyn $
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*/
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#include "stdinc.h"
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#include "struct.h"
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#include "client.h"
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#include "match.h"
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#include "ircd.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 "parse.h"
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#include "modules.h"
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static int ms_svinfo(struct Client *, struct Client *, int, const char **);
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struct Message svinfo_msgtab = {
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"SVINFO", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, mg_ignore, mg_ignore, {ms_svinfo, 5}, mg_ignore, mg_ignore}
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};
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mapi_clist_av1 svinfo_clist[] = { &svinfo_msgtab, NULL };
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DECLARE_MODULE_AV1(svinfo, NULL, NULL, svinfo_clist, NULL, NULL, "$Revision: 28677 $");
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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] = unused, send 0
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* parv[4] = server's idea of UTC time
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*/
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static int
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ms_svinfo(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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time_t deltat;
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time_t theirtime;
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/* SVINFO isnt remote. */
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if(source_p != client_p)
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return 0;
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if(TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN)
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{
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/* TS version is too low on one of the sides, drop the link */
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sendto_realops_flags(UMODE_ALL, L_ALL,
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"Link %s dropped, wrong TS protocol version (%s,%s)",
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source_p->name, parv[1], parv[2]);
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exit_client(source_p, source_p, source_p, "Incompatible TS version");
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return 0;
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}
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/*
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* since we're here, might as well call rb_set_time() while we're at it
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*/
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rb_set_time();
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theirtime = atol(parv[4]);
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deltat = abs(theirtime - rb_current_time());
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if(deltat > ConfigFileEntry.ts_max_delta)
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{
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sendto_realops_flags(UMODE_ALL, L_ALL,
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"Link %s dropped, excessive TS delta"
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" (my TS=%" RBTT_FMT ", their TS=%" RBTT_FMT " delta=%ld)",
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source_p->name,
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rb_current_time(), theirtime, deltat);
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ilog(L_SERVER,
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"Link %s dropped, excessive TS delta"
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" (my TS=%" RBTT_FMT ", their TS=%" RBTT_FMT ", delta=%ld)",
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log_client_name(source_p, SHOW_IP), (long)rb_current_time(), (long)theirtime,
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deltat);
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exit_client(source_p, source_p, source_p, "Excessive TS delta");
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return 0;
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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(UMODE_ALL, L_ALL,
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"Link %s notable TS delta"
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" (my TS=% " RBTT_FMT ", their TS=%" RBTT_FMT ", delta=%ld)",
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source_p->name, (long)rb_current_time(), (long)theirtime,
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deltat);
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}
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return 0;
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}
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