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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(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) 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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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "client.h" |
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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 "parse.h" |
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#include "modules.h" |
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|
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|
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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 |
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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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|
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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, "Need SERVER before SVINFO"); |
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return; |
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} |
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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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|
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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(UMODE_ALL, 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(UMODE_ALL, 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, "Incompatible TS version"); |
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return; |
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} |
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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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|
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if (deltat > ConfigFileEntry.ts_max_delta) |
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{ |
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sendto_realops_flags(UMODE_ALL, 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(UMODE_ALL, 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(LOG_TYPE_IRCD, |
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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, "Excessive TS delta"); |
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return; |
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} |
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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 (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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|
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static struct Message svinfo_msgtab = { |
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"SVINFO", 0, 0, 4, MAXPARA, MFLG_SLOW, 0, |
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{m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore} |
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}; |
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|
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static void |
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module_init(void) |
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{ |
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mod_add_cmd(&svinfo_msgtab); |
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} |
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|
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static void |
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module_exit(void) |
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{ |
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mod_del_cmd(&svinfo_msgtab); |
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} |
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|
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struct module module_entry = { |
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.node = { NULL, NULL, NULL }, |
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.name = NULL, |
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.version = "$Revision$", |
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.handle = NULL, |
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.modinit = module_init, |
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.modexit = module_exit, |
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.flags = 0 |
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}; |
