mirror of
https://github.com/matrix-construct/construct
synced 2024-10-30 10:28:55 +01:00
172 lines
5 KiB
C
172 lines
5 KiB
C
/*
|
|
* ircd-ratbox: A slightly useful ircd.
|
|
* m_knock.c: Requests to be invited to a channel.
|
|
*
|
|
* Copyright (C) 1996-2002 Hybrid Development Team
|
|
* Copyright (C) 2002-2005 ircd-ratbox 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*
|
|
* $Id: m_knock.c 3570 2007-09-09 19:19:23Z jilles $
|
|
*/
|
|
|
|
#include "stdinc.h"
|
|
#include "channel.h"
|
|
#include "client.h"
|
|
#include "hash.h"
|
|
#include "match.h"
|
|
#include "ircd.h"
|
|
#include "numeric.h"
|
|
#include "send.h"
|
|
#include "s_conf.h"
|
|
#include "msg.h"
|
|
#include "parse.h"
|
|
#include "modules.h"
|
|
#include "s_serv.h"
|
|
|
|
static int m_knock(struct Client *, struct Client *, int, const char **);
|
|
|
|
struct Message knock_msgtab = {
|
|
"KNOCK", 0, 0, 0, MFLG_SLOW,
|
|
{mg_unreg, {m_knock, 2}, {m_knock, 2}, mg_ignore, mg_ignore, {m_knock, 2}}
|
|
};
|
|
|
|
mapi_clist_av1 knock_clist[] = { &knock_msgtab, NULL };
|
|
DECLARE_MODULE_AV1(knock, NULL, NULL, knock_clist, NULL, NULL, "$Revision: 3570 $");
|
|
|
|
/* m_knock
|
|
* parv[1] = channel
|
|
*
|
|
* The KNOCK command has the following syntax:
|
|
* :<sender> KNOCK <channel>
|
|
*
|
|
* If a user is not banned from the channel they can use the KNOCK
|
|
* command to have the server NOTICE the channel operators notifying
|
|
* they would like to join. Helpful if the channel is invite-only, the
|
|
* key is forgotten, or the channel is full (INVITE can bypass each one
|
|
* of these conditions. Concept by Dianora <db@db.net> and written by
|
|
* <anonymous>
|
|
*/
|
|
static int
|
|
m_knock(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
|
{
|
|
struct Channel *chptr;
|
|
char *p, *name;
|
|
|
|
if(MyClient(source_p) && ConfigChannel.use_knock == 0)
|
|
{
|
|
sendto_one(source_p, form_str(ERR_KNOCKDISABLED),
|
|
me.name, source_p->name);
|
|
return 0;
|
|
}
|
|
|
|
name = LOCAL_COPY(parv[1]);
|
|
|
|
/* dont allow one knock to multiple chans */
|
|
if((p = strchr(name, ',')))
|
|
*p = '\0';
|
|
|
|
if(!IsChannelName(name))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
|
|
form_str(ERR_NOSUCHCHANNEL), name);
|
|
return 0;
|
|
}
|
|
|
|
if((chptr = find_channel(name)) == NULL)
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
|
|
form_str(ERR_NOSUCHCHANNEL), name);
|
|
return 0;
|
|
}
|
|
|
|
if(IsMember(source_p, chptr))
|
|
{
|
|
if(MyClient(source_p))
|
|
sendto_one(source_p, form_str(ERR_KNOCKONCHAN),
|
|
me.name, source_p->name, name);
|
|
return 0;
|
|
}
|
|
|
|
if(!((chptr->mode.mode & MODE_INVITEONLY) || (*chptr->mode.key) ||
|
|
(chptr->mode.limit &&
|
|
rb_dlink_list_length(&chptr->members) >= (unsigned long)chptr->mode.limit)))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_CHANOPEN,
|
|
form_str(ERR_CHANOPEN), name);
|
|
return 0;
|
|
}
|
|
|
|
/* cant knock to a +p channel */
|
|
if(HiddenChannel(chptr))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN,
|
|
form_str(ERR_CANNOTSENDTOCHAN), name);
|
|
return 0;
|
|
}
|
|
|
|
|
|
if(MyClient(source_p))
|
|
{
|
|
/* don't allow a knock if the user is banned */
|
|
if(is_banned(chptr, source_p, NULL, NULL, NULL) == CHFL_BAN ||
|
|
is_quieted(chptr, source_p, NULL, NULL, NULL) == CHFL_BAN)
|
|
{
|
|
sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN,
|
|
form_str(ERR_CANNOTSENDTOCHAN), name);
|
|
return 0;
|
|
}
|
|
|
|
/* local flood protection:
|
|
* allow one knock per user per knock_delay
|
|
* allow one knock per channel per knock_delay_channel
|
|
*/
|
|
if(!IsOper(source_p) &&
|
|
(source_p->localClient->last_knock + ConfigChannel.knock_delay) > rb_current_time())
|
|
{
|
|
sendto_one(source_p, form_str(ERR_TOOMANYKNOCK),
|
|
me.name, source_p->name, name, "user");
|
|
return 0;
|
|
}
|
|
else if((chptr->last_knock + ConfigChannel.knock_delay_channel) > rb_current_time())
|
|
{
|
|
sendto_one(source_p, form_str(ERR_TOOMANYKNOCK),
|
|
me.name, source_p->name, name, "channel");
|
|
return 0;
|
|
}
|
|
|
|
/* ok, we actually can send the knock, tell client */
|
|
source_p->localClient->last_knock = rb_current_time();
|
|
|
|
sendto_one(source_p, form_str(RPL_KNOCKDLVR),
|
|
me.name, source_p->name, name);
|
|
}
|
|
|
|
chptr->last_knock = rb_current_time();
|
|
|
|
if(ConfigChannel.use_knock)
|
|
sendto_channel_local(chptr->mode.mode & MODE_FREEINVITE ? ALL_MEMBERS : ONLY_CHANOPS,
|
|
chptr, form_str(RPL_KNOCK),
|
|
me.name, name, name, source_p->name,
|
|
source_p->username, source_p->host);
|
|
|
|
sendto_server(client_p, chptr, CAP_KNOCK|CAP_TS6, NOCAPS,
|
|
":%s KNOCK %s", use_id(source_p), name);
|
|
sendto_server(client_p, chptr, CAP_KNOCK, CAP_TS6,
|
|
":%s KNOCK %s", source_p->name, name);
|
|
return 0;
|
|
}
|
|
|