/* * NeoIRCd: NeoStats Group. Based on Hybird7 * m_svinfo.c: Sends TS information for clock & compatibility checks. * * Copyright (C) 2002 by the past and present ircd coders, and others. * * 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 * * $Id: m_svinfo.c,v 1.4 2002/09/13 16:30:03 fishwaldo Exp $ */ #include "stdinc.h" #include "handlers.h" #include "client.h" #include "common.h" /* TRUE bleah */ #include "irc_string.h" #include "ircd.h" #include "numeric.h" #include "send.h" #include "s_conf.h" #include "s_log.h" #include "msg.h" #include "parse.h" #include "modules.h" static void ms_svinfo(struct Client*, struct Client*, int, char**); struct Message svinfo_msgtab = { "SVINFO", 0, 0, 4, 0, MFLG_SLOW, 0, {m_unregistered, m_ignore, ms_svinfo, m_ignore} }; #ifndef STATIC_MODULES void _modinit(void) { mod_add_cmd(&svinfo_msgtab); } void _moddeinit(void) { mod_del_cmd(&svinfo_msgtab); } const char *_version = "$Revision: 1.4 $"; #endif /* * 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 void 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, source_p, "Need SERVER before SVINFO"); return; } if (!IsServer(source_p) || !MyConnect(source_p) || parc < 5) return; 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(FLAGS_ALL|FLAGS_REMOTE, L_ADMIN, "Link %s dropped, wrong TS protocol version (%s,%s)", get_client_name(source_p, SHOW_IP), parv[1], parv[2]); sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_OPER, "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, source_p, "Incompatible TS version"); return; } /* * 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(FLAGS_ALL|FLAGS_REMOTE, L_ADMIN, "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(FLAGS_ALL|FLAGS_REMOTE, L_OPER, "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(L_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); exit_client(source_p, source_p, source_p, "Excessive TS delta"); return; } if (deltat > ConfigFileEntry.ts_warn_delta) { sendto_realops_flags(FLAGS_ALL|FLAGS_REMOTE, L_ALL, "Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)", source_p->name, (unsigned long) CurrentTime, (unsigned long) theirtime, (int) deltat); } }