mirror of https://github.com/pissnet/pissircd.git
209 lines
4.9 KiB
C
209 lines
4.9 KiB
C
/*
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* Unreal Internet Relay Chat Daemon, src/modules/pingpong.c
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* (C) 2000-2001 Carsten V. Munk and the UnrealIRCd Team
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* Moved to modules by Fish (Justin Hammond)
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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 1, or (at your option)
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* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "unrealircd.h"
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CMD_FUNC(cmd_ping);
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CMD_FUNC(cmd_pong);
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CMD_FUNC(cmd_nospoof);
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/* Place includes here */
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#define MSG_PING "PING" /* PING */
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#define MSG_PONG "PONG" /* PONG */
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ModuleHeader MOD_HEADER
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= {
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"pingpong", /* Name of module */
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"5.0", /* Version */
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"ping, pong and nospoof", /* Short description of module */
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"UnrealIRCd Team",
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"unrealircd-6",
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};
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/* This is called on module init, before Server Ready */
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MOD_INIT()
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{
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CommandAdd(modinfo->handle, MSG_PING, cmd_ping, MAXPARA, CMD_USER|CMD_SERVER|CMD_SHUN);
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CommandAdd(modinfo->handle, MSG_PONG, cmd_pong, MAXPARA, CMD_UNREGISTERED|CMD_USER|CMD_SERVER|CMD_SHUN|CMD_VIRUS);
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MARK_AS_OFFICIAL_MODULE(modinfo);
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return MOD_SUCCESS;
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}
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/* Is first run when server is 100% ready */
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MOD_LOAD()
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{
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return MOD_SUCCESS;
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}
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/* Called when module is unloaded */
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MOD_UNLOAD()
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{
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return MOD_SUCCESS;
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}
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/*
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** cmd_ping
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** parv[1] = origin
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** parv[2] = destination
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*/
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CMD_FUNC(cmd_ping)
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{
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Client *target;
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const char *origin, *destination;
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if (parc < 2 || BadPtr(parv[1]))
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{
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sendnumeric(client, ERR_NOORIGIN);
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return;
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}
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origin = parv[1];
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destination = parv[2]; /* Will get NULL or pointer (parc >= 2!!) */
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if (!MyUser(client))
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origin = client->name;
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if (!BadPtr(destination) && mycmp(destination, me.name) != 0 && mycmp(destination, me.id) != 0)
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{
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if (MyUser(client))
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origin = client->name; /* Make sure origin is not spoofed */
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if ((target = find_server_quick(destination)) && (target != &me))
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sendto_one(target, recv_mtags, ":%s PING %s :%s", client->name, origin, destination);
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else
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{
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sendnumeric(client, ERR_NOSUCHSERVER, destination);
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return;
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}
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}
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else
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{
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MessageTag *mtags = NULL;
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new_message(&me, recv_mtags, &mtags);
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sendto_one(client, mtags, ":%s PONG %s :%s", me.name,
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(destination) ? destination : me.name, origin);
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free_message_tags(mtags);
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}
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}
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/*
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** cmd_nospoof - allows clients to respond to no spoofing patch
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** parv[1] = code
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*/
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CMD_FUNC(cmd_nospoof)
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{
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unsigned long result;
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if (IsNotSpoof(client))
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return;
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if (IsRegistered(client))
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return;
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if (!*client->name)
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return;
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if (BadPtr(parv[1]))
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{
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sendnotice(client, "ERROR: Invalid PING response. Your client must respond back with PONG :<cookie>");
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return;
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}
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result = strtoul(parv[1], NULL, 16);
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if (result != client->local->nospoof)
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{
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/* Apparently we also accept PONG <irrelevant> <cookie>... */
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if (BadPtr(parv[2]))
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{
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sendnotice(client, "ERROR: Invalid PING response. Your client must respond back with PONG :<cookie>");
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return;
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}
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result = strtoul(parv[2], NULL, 16);
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if (result != client->local->nospoof)
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{
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sendnotice(client, "ERROR: Invalid PING response. Your client must respond back with PONG :<cookie>");
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return;
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}
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}
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client->local->nospoof = 0;
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if (USE_BAN_VERSION && MyConnect(client))
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sendto_one(client, NULL, ":IRC!IRC@%s PRIVMSG %s :\1VERSION\1",
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me.name, client->name);
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if (is_handshake_finished(client))
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register_user(client);
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}
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/*
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** cmd_pong
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** parv[1] = origin
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** parv[2] = destination
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*/
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CMD_FUNC(cmd_pong)
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{
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Client *target;
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const char *origin, *destination;
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if (!IsRegistered(client))
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{
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CALL_CMD_FUNC(cmd_nospoof);
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return;
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}
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if (parc < 2 || *parv[1] == '\0')
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{
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sendnumeric(client, ERR_NOORIGIN);
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return;
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}
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origin = parv[1];
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destination = parv[2];
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ClearPingSent(client);
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ClearPingWarning(client);
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/* Remote pongs for clients? uhh... */
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if (MyUser(client) || !IsRegistered(client))
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return;
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/* PONG from a server - either for us, or needs relaying.. */
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if (!BadPtr(destination) && mycmp(destination, me.name) != 0)
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{
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if ((target = find_client(destination, NULL)) ||
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(target = find_server_quick(destination)))
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{
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if (IsUser(client) && !IsServer(target))
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{
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sendnumeric(client, ERR_NOSUCHSERVER, destination);
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return;
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} else
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{
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MessageTag *mtags = NULL;
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new_message(client, recv_mtags, &mtags);
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sendto_one(target, mtags, ":%s PONG %s %s", client->name, origin, destination);
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free_message_tags(mtags);
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}
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}
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else
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{
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sendnumeric(client, ERR_NOSUCHSERVER, destination);
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return;
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}
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}
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}
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