mirror of https://github.com/pissnet/pissircd.git
161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
/*
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* IRC - Internet Relay Chat, src/modules/knock.c
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* (C) 2004 The UnrealIRCd Team
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*
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* See file AUTHORS in IRC package for additional names of
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* the programmers.
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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_knock);
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#define MSG_KNOCK "KNOCK"
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ModuleHeader MOD_HEADER
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= {
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"knock",
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"5.0",
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"command /knock",
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"UnrealIRCd Team",
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"unrealircd-6",
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};
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MOD_INIT()
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{
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CommandAdd(modinfo->handle, MSG_KNOCK, cmd_knock, 2, CMD_USER);
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ISupportAdd(modinfo->handle, "KNOCK", NULL);
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MARK_AS_OFFICIAL_MODULE(modinfo);
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return MOD_SUCCESS;
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}
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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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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_knock
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** parv[1] - channel
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** parv[2] - reason
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**
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** Coded by Stskeeps
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** Additional bugfixes/ideas by codemastr
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** (C) codemastr & Stskeeps
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**
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** 2019-11-27: Behavior change. We now send the KNOCK
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** across servers and only deliver the channel notice
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** to local channel members. The reason for this is that
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** otherwise we cannot count KNOCKs network-wide which
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** caused knock-floods per-channel to be per-server
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** rather than global, which undesirable.
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** Unfortunately, this means that if you have a mixed
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** U4 and U5 network you will see KNOCK notices twice
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** for every attempt.
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*/
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CMD_FUNC(cmd_knock)
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{
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Channel *channel;
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Hook *h;
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int i = 0;
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MessageTag *mtags = NULL;
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const char *reason;
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if (IsServer(client))
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return;
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if (parc < 2 || *parv[1] == '\0')
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{
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sendnumeric(client, ERR_NEEDMOREPARAMS, "KNOCK");
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return;
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}
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reason = parv[2] ? parv[2] : "no reason specified";
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if (MyConnect(client) && !valid_channelname(parv[1]))
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{
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sendnumeric(client, ERR_NOSUCHCHANNEL, parv[1]);
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return;
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}
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if (!(channel = find_channel(parv[1])))
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{
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sendnumeric(client, ERR_CANNOTKNOCK, parv[1], "Channel does not exist!");
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return;
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}
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/* IsMember bugfix by codemastr */
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if (IsMember(client, channel) == 1)
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{
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sendnumeric(client, ERR_CANNOTKNOCK, channel->name, "You're already there!");
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return;
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}
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if (!has_channel_mode(channel, 'i'))
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{
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sendnumeric(client, ERR_CANNOTKNOCK, channel->name, "Channel is not invite only!");
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return;
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}
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if (is_banned(client, channel, BANCHK_JOIN, NULL, NULL))
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{
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sendnumeric(client, ERR_CANNOTKNOCK, channel->name, "You're banned!");
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return;
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}
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for (h = Hooks[HOOKTYPE_PRE_KNOCK]; h; h = h->next)
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{
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i = (*(h->func.intfunc))(client, channel, &reason);
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if (i == HOOK_DENY || i == HOOK_ALLOW)
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break;
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}
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if (i == HOOK_DENY)
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return;
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if (MyUser(client) &&
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!ValidatePermissionsForPath("immune:knock-flood",client,NULL,NULL,NULL) &&
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flood_limit_exceeded(client, FLD_KNOCK))
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{
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sendnumeric(client, ERR_CANNOTKNOCK, parv[1], "You are KNOCK flooding");
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return;
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}
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new_message(&me, NULL, &mtags);
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sendto_channel(channel, &me, NULL, "o",
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0, SEND_LOCAL, mtags,
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":%s NOTICE @%s :[Knock] by %s!%s@%s (%s)",
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me.name, channel->name,
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client->name, client->user->username, GetHost(client),
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reason);
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sendto_server(client, 0, 0, mtags, ":%s KNOCK %s :%s", client->id, channel->name, reason);
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if (MyUser(client))
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sendnotice(client, "Knocked on %s", channel->name);
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RunHook(HOOKTYPE_KNOCK, client, channel, mtags, parv[2]);
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free_message_tags(mtags);
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}
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