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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 1997-2015 ircd-hybrid 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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|
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/*! \file m_svinfo.c |
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* \brief Includes required functions for processing the SVINFO command. |
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* \version $Id$ |
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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 "send.h" |
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#include "conf.h" |
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#include "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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/*! \brief SVINFO command handler |
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* |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = command |
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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 int |
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ms_svinfo(struct Client *source_p, int parc, char *parv[]) |
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{ |
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intmax_t deltat = 0, theirtime = 0; |
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|
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if (!IsServer(source_p) || !MyConnect(source_p)) |
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return 0; |
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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_SERVNOTICE, L_ADMIN, SEND_NOTICE, |
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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_SERVNOTICE, L_OPER, SEND_NOTICE, |
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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, "Incompatible TS version"); |
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return 0; |
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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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|
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theirtime = strtoimax(parv[4], NULL, 10); |
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deltat = imaxabs(theirtime - CurrentTime); |
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|
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if (deltat > ConfigGeneral.ts_max_delta) |
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{ |
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sendto_realops_flags(UMODE_SERVNOTICE, L_ADMIN, SEND_NOTICE, |
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"Link %s dropped, excessive TS delta (my TS=%ju, their TS=%ju, delta=%ji)", |
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get_client_name(source_p, SHOW_IP), |
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CurrentTime, |
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theirtime, |
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deltat); |
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sendto_realops_flags(UMODE_SERVNOTICE, L_OPER, SEND_NOTICE, |
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"Link %s dropped, excessive TS delta (my TS=%ju, their TS=%ju, delta=%ji)", |
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get_client_name(source_p, MASK_IP), |
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CurrentTime, |
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theirtime, |
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deltat); |
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ilog(LOG_TYPE_IRCD, |
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"Link %s dropped, excessive TS delta (my TS=%ju, their TS=%ju, delta=%ji)", |
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get_client_name(source_p, SHOW_IP), |
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CurrentTime, |
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theirtime, |
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deltat); |
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exit_client(source_p, "Excessive TS delta"); |
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return 0; |
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} |
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|
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if (deltat > ConfigGeneral.ts_warn_delta) |
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sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, |
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"Link %s notable TS delta (my TS=%ju, their TS=%ju, delta=%ji)", |
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source_p->name, |
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CurrentTime, |
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theirtime, |
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deltat); |
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return 0; |
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} |
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|
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static struct Message svinfo_msgtab = |
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{ |
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.cmd = "SVINFO", |
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.args_min = 5, |
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.args_max = MAXPARA, |
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.handlers[UNREGISTERED_HANDLER] = m_unregistered, |
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.handlers[CLIENT_HANDLER] = m_ignore, |
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.handlers[SERVER_HANDLER] = ms_svinfo, |
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.handlers[ENCAP_HANDLER] = m_ignore, |
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.handlers[OPER_HANDLER] = 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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{ |
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.version = "$Revision$", |
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.modinit = module_init, |
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.modexit = module_exit, |
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}; |
