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/*
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
*
* Copyright (c) 1997-2018 ircd-hybrid development team
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
/*! \file m_ping.c
* \brief Includes required functions for processing the PING command.
* \version $Id: m_ping.c 8280 2018-02-20 19:30:33Z michael $
*/
#include "stdinc.h"
#include "client.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "irc_string.h"
#include "parse.h"
#include "modules.h"
#include "hash.h"
#include "conf.h"
#include "server.h"
/*! \brief PING command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = origin
* - parv[2] = destination
*/
static int
m_ping(struct Client *source_p, int parc, char *parv[])
{
struct Client *target_p = NULL;
if (parc < 2 || EmptyString(parv[1]))
{
sendto_one_numeric(source_p, &me, ERR_NOORIGIN);
return 0;
}
const char *const destination = parv[2]; /* Will get NULL or pointer (parc >= 2!!) */
if (ConfigServerHide.disable_remote_commands && !HasUMode(source_p, UMODE_OPER))
{
sendto_one(source_p, ":%s PONG %s :%s", me.name,
(destination) ? destination : me.name, parv[1]);
return 0;
}
if (EmptyString(destination) || ((target_p = hash_find_server(destination)) && IsMe(target_p)))
sendto_one(source_p, ":%s PONG %s :%s", me.name, me.name, parv[1]);
else if (target_p)
sendto_one(target_p, ":%s PING %s :%s",
ID_or_name(source_p, target_p), source_p->name,
ID_or_name(target_p, target_p));
else
sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, destination);
return 0;
}
/*! \brief PING command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = origin
* - parv[2] = destination
*/
static int
ms_ping(struct Client *source_p, int parc, char *parv[])
{
struct Client *target_p = NULL;
if (parc < 2 || EmptyString(parv[1]))
{
sendto_one_numeric(source_p, &me, ERR_NOORIGIN);
return 0;
}
const char *const destination = parv[2]; /* Will get NULL or pointer (parc >= 2!!) */
if (EmptyString(destination) || ((target_p = hash_find_server(destination)) && IsMe(target_p)))
sendto_one(source_p, ":%s PONG %s :%s", ID_or_name(&me, source_p),
me.name, ID_or_name(source_p, source_p));
else if (target_p)
{
if (target_p->from != source_p->from)
sendto_one(target_p, ":%s PING %s :%s",
ID_or_name(source_p, target_p), source_p->name,
ID_or_name(target_p, target_p));
}
else if (!IsDigit(*destination))
sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, destination);
return 0;
}
static struct Message ping_msgtab =
{
.cmd = "PING",
.args_max = MAXPARA,
.handlers[UNREGISTERED_HANDLER] = m_unregistered,
.handlers[CLIENT_HANDLER] = m_ping,
.handlers[SERVER_HANDLER] = ms_ping,
.handlers[ENCAP_HANDLER] = m_ignore,
.handlers[OPER_HANDLER] = m_ping
};
static void
module_init(void)
{
mod_add_cmd(&ping_msgtab);
}
static void
module_exit(void)
{
mod_del_cmd(&ping_msgtab);
}
struct module module_entry =
{
.version = "$Revision: 8280 $",
.modinit = module_init,
.modexit = module_exit,
};
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