mirror of
https://github.com/matrix-construct/construct
synced 2024-11-29 18:22:50 +01:00
d1316b193b
Arbitrarily prefer a forward channel to no forward channel and an alphabetically higher forward channel to a lower one. This is a simplistic implementation that generates one MODE message to local clients for each ban removed (to be replaced). For simplicity and to avoid amplification of incoming MODE messages, regular modes may still desync the forward channel of a ban.
434 lines
10 KiB
C
434 lines
10 KiB
C
/*
|
|
* ircd-ratbox: A slightly useful ircd.
|
|
* m_mode.c: Sets a user or channel mode.
|
|
*
|
|
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
|
|
* 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_mode.c 1006 2006-03-09 15:32:14Z nenolod $
|
|
*/
|
|
|
|
#include "stdinc.h"
|
|
#include "channel.h"
|
|
#include "client.h"
|
|
#include "hash.h"
|
|
#include "match.h"
|
|
#include "ircd.h"
|
|
#include "numeric.h"
|
|
#include "s_user.h"
|
|
#include "s_conf.h"
|
|
#include "s_serv.h"
|
|
#include "logger.h"
|
|
#include "send.h"
|
|
#include "msg.h"
|
|
#include "parse.h"
|
|
#include "modules.h"
|
|
#include "packet.h"
|
|
#include "s_newconf.h"
|
|
|
|
static int m_mode(struct Client *, struct Client *, int, const char **);
|
|
static int ms_mode(struct Client *, struct Client *, int, const char **);
|
|
static int ms_tmode(struct Client *, struct Client *, int, const char **);
|
|
static int ms_mlock(struct Client *, struct Client *, int, const char **);
|
|
static int ms_bmask(struct Client *, struct Client *, int, const char **);
|
|
|
|
struct Message mode_msgtab = {
|
|
"MODE", 0, 0, 0, MFLG_SLOW,
|
|
{mg_unreg, {m_mode, 2}, {m_mode, 3}, {ms_mode, 3}, mg_ignore, {m_mode, 2}}
|
|
};
|
|
struct Message tmode_msgtab = {
|
|
"TMODE", 0, 0, 0, MFLG_SLOW,
|
|
{mg_ignore, mg_ignore, {ms_tmode, 4}, {ms_tmode, 4}, mg_ignore, mg_ignore}
|
|
};
|
|
struct Message mlock_msgtab = {
|
|
"MLOCK", 0, 0, 0, MFLG_SLOW,
|
|
{mg_ignore, mg_ignore, {ms_mlock, 3}, {ms_mlock, 3}, mg_ignore, mg_ignore}
|
|
};
|
|
struct Message bmask_msgtab = {
|
|
"BMASK", 0, 0, 0, MFLG_SLOW,
|
|
{mg_ignore, mg_ignore, mg_ignore, {ms_bmask, 5}, mg_ignore, mg_ignore}
|
|
};
|
|
|
|
mapi_clist_av1 mode_clist[] = { &mode_msgtab, &tmode_msgtab, &mlock_msgtab, &bmask_msgtab, NULL };
|
|
|
|
DECLARE_MODULE_AV1(mode, NULL, NULL, mode_clist, NULL, NULL, "$Revision: 1006 $");
|
|
|
|
/*
|
|
* m_mode - MODE command handler
|
|
* parv[1] - channel
|
|
*/
|
|
static int
|
|
m_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
|
{
|
|
struct Channel *chptr = NULL;
|
|
struct membership *msptr;
|
|
int n = 2;
|
|
const char *dest;
|
|
int operspy = 0;
|
|
|
|
dest = parv[1];
|
|
|
|
if(IsOperSpy(source_p) && *dest == '!')
|
|
{
|
|
dest++;
|
|
operspy = 1;
|
|
|
|
if(EmptyString(dest))
|
|
{
|
|
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
|
|
me.name, source_p->name, "MODE");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Now, try to find the channel in question */
|
|
if(!IsChanPrefix(*dest))
|
|
{
|
|
/* if here, it has to be a non-channel name */
|
|
user_mode(client_p, source_p, parc, parv);
|
|
return 0;
|
|
}
|
|
|
|
if(!check_channel_name(dest))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[1]);
|
|
return 0;
|
|
}
|
|
|
|
chptr = find_channel(dest);
|
|
|
|
if(chptr == NULL)
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
|
|
form_str(ERR_NOSUCHCHANNEL), parv[1]);
|
|
return 0;
|
|
}
|
|
|
|
/* Now know the channel exists */
|
|
if(parc < n + 1)
|
|
{
|
|
if(operspy)
|
|
report_operspy(source_p, "MODE", chptr->chname);
|
|
|
|
sendto_one(source_p, form_str(RPL_CHANNELMODEIS),
|
|
me.name, source_p->name, parv[1],
|
|
operspy ? channel_modes(chptr, &me) : channel_modes(chptr, source_p));
|
|
|
|
sendto_one(source_p, form_str(RPL_CREATIONTIME),
|
|
me.name, source_p->name, parv[1], chptr->channelts);
|
|
}
|
|
else
|
|
{
|
|
msptr = find_channel_membership(chptr, source_p);
|
|
|
|
/* Finish the flood grace period... */
|
|
if(MyClient(source_p) && !IsFloodDone(source_p))
|
|
{
|
|
if(!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0')))
|
|
flood_endgrace(source_p);
|
|
}
|
|
|
|
set_channel_mode(client_p, source_p, chptr, msptr, parc - n, parv + n);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ms_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
|
{
|
|
struct Channel *chptr;
|
|
|
|
chptr = find_channel(parv[1]);
|
|
|
|
if(chptr == NULL)
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
|
|
form_str(ERR_NOSUCHCHANNEL), parv[1]);
|
|
return 0;
|
|
}
|
|
|
|
set_channel_mode(client_p, source_p, chptr, NULL, parc - 2, parv + 2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ms_tmode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
|
{
|
|
struct Channel *chptr = NULL;
|
|
struct membership *msptr;
|
|
|
|
/* Now, try to find the channel in question */
|
|
if(!IsChanPrefix(parv[2][0]) || !check_channel_name(parv[2]))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[2]);
|
|
return 0;
|
|
}
|
|
|
|
chptr = find_channel(parv[2]);
|
|
|
|
if(chptr == NULL)
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
|
|
form_str(ERR_NOSUCHCHANNEL), parv[2]);
|
|
return 0;
|
|
}
|
|
|
|
/* TS is higher, drop it. */
|
|
if(atol(parv[1]) > chptr->channelts)
|
|
return 0;
|
|
|
|
if(IsServer(source_p))
|
|
{
|
|
set_channel_mode(client_p, source_p, chptr, NULL, parc - 3, parv + 3);
|
|
}
|
|
else
|
|
{
|
|
msptr = find_channel_membership(chptr, source_p);
|
|
|
|
set_channel_mode(client_p, source_p, chptr, msptr, parc - 3, parv + 3);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ms_mlock(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
|
{
|
|
struct Channel *chptr = NULL;
|
|
|
|
/* Now, try to find the channel in question */
|
|
if(!IsChanPrefix(parv[2][0]) || !check_channel_name(parv[2]))
|
|
{
|
|
sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[2]);
|
|
return 0;
|
|
}
|
|
|
|
chptr = find_channel(parv[2]);
|
|
|
|
if(chptr == NULL)
|
|
{
|
|
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
|
|
form_str(ERR_NOSUCHCHANNEL), parv[2]);
|
|
return 0;
|
|
}
|
|
|
|
/* TS is higher, drop it. */
|
|
if(atol(parv[1]) > chptr->channelts)
|
|
return 0;
|
|
|
|
if(IsServer(source_p))
|
|
set_channel_mlock(client_p, source_p, chptr, parv[3], TRUE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
possibly_remove_lower_forward(struct Client *fakesource_p, int mems,
|
|
struct Channel *chptr, rb_dlink_list *banlist, int mchar,
|
|
const char *mask, const char *forward)
|
|
{
|
|
struct Ban *actualBan;
|
|
rb_dlink_node *ptr;
|
|
|
|
RB_DLINK_FOREACH(ptr, banlist->head)
|
|
{
|
|
actualBan = ptr->data;
|
|
if(!irccmp(actualBan->banstr, mask) &&
|
|
(actualBan->forward == NULL ||
|
|
irccmp(actualBan->forward, forward) < 0))
|
|
{
|
|
sendto_channel_local(mems, chptr, ":%s MODE %s -%c %s%s%s",
|
|
fakesource_p->name,
|
|
chptr->chname,
|
|
mchar,
|
|
actualBan->banstr,
|
|
actualBan->forward ? "$" : "",
|
|
actualBan->forward ? actualBan->forward : "");
|
|
rb_dlinkDelete(&actualBan->node, banlist);
|
|
free_ban(actualBan);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
ms_bmask(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
|
{
|
|
static char modebuf[BUFSIZE];
|
|
static char parabuf[BUFSIZE];
|
|
struct Channel *chptr;
|
|
rb_dlink_list *banlist;
|
|
char *s, *forward;
|
|
char *t;
|
|
char *mbuf;
|
|
char *pbuf;
|
|
long mode_type;
|
|
int mlen;
|
|
int plen = 0;
|
|
int tlen;
|
|
int arglen;
|
|
int modecount = 0;
|
|
int needcap = NOCAPS;
|
|
int mems;
|
|
struct Client *fakesource_p;
|
|
|
|
if(!IsChanPrefix(parv[2][0]) || !check_channel_name(parv[2]))
|
|
return 0;
|
|
|
|
if((chptr = find_channel(parv[2])) == NULL)
|
|
return 0;
|
|
|
|
/* TS is higher, drop it. */
|
|
if(atol(parv[1]) > chptr->channelts)
|
|
return 0;
|
|
|
|
switch (parv[3][0])
|
|
{
|
|
case 'b':
|
|
banlist = &chptr->banlist;
|
|
mode_type = CHFL_BAN;
|
|
mems = ALL_MEMBERS;
|
|
break;
|
|
|
|
case 'e':
|
|
banlist = &chptr->exceptlist;
|
|
mode_type = CHFL_EXCEPTION;
|
|
needcap = CAP_EX;
|
|
mems = ONLY_CHANOPS;
|
|
break;
|
|
|
|
case 'I':
|
|
banlist = &chptr->invexlist;
|
|
mode_type = CHFL_INVEX;
|
|
needcap = CAP_IE;
|
|
mems = ONLY_CHANOPS;
|
|
break;
|
|
|
|
case 'q':
|
|
banlist = &chptr->quietlist;
|
|
mode_type = CHFL_QUIET;
|
|
mems = ALL_MEMBERS;
|
|
break;
|
|
|
|
/* maybe we should just blindly propagate this? */
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
parabuf[0] = '\0';
|
|
s = LOCAL_COPY(parv[4]);
|
|
|
|
/* Hide connecting server on netburst -- jilles */
|
|
if (ConfigServerHide.flatten_links && !HasSentEob(source_p))
|
|
fakesource_p = &me;
|
|
else
|
|
fakesource_p = source_p;
|
|
mlen = rb_sprintf(modebuf, ":%s MODE %s +", fakesource_p->name, chptr->chname);
|
|
mbuf = modebuf + mlen;
|
|
pbuf = parabuf;
|
|
|
|
while(*s == ' ')
|
|
s++;
|
|
|
|
/* next char isnt a space, point t to the next one */
|
|
if((t = strchr(s, ' ')) != NULL)
|
|
{
|
|
*t++ = '\0';
|
|
|
|
/* double spaces will break the parser */
|
|
while(*t == ' ')
|
|
t++;
|
|
}
|
|
|
|
/* couldve skipped spaces and got nothing.. */
|
|
while(!EmptyString(s))
|
|
{
|
|
/* ban with a leading ':' -- this will break the protocol */
|
|
if(*s == ':')
|
|
goto nextban;
|
|
|
|
tlen = strlen(s);
|
|
|
|
/* I dont even want to begin parsing this.. */
|
|
if(tlen > MODEBUFLEN)
|
|
break;
|
|
|
|
if((forward = strchr(s+1, '$')) != NULL)
|
|
{
|
|
*forward++ = '\0';
|
|
if(*forward == '\0')
|
|
tlen--, forward = NULL;
|
|
possibly_remove_lower_forward(fakesource_p, mems,
|
|
chptr, banlist, parv[3][0], s, forward);
|
|
}
|
|
|
|
if(add_id(fakesource_p, chptr, s, forward, banlist, mode_type))
|
|
{
|
|
/* this new one wont fit.. */
|
|
if(mlen + MAXMODEPARAMS + plen + tlen > BUFSIZE - 5 ||
|
|
modecount >= MAXMODEPARAMS)
|
|
{
|
|
*mbuf = '\0';
|
|
*(pbuf - 1) = '\0';
|
|
sendto_channel_local(mems, chptr, "%s %s", modebuf, parabuf);
|
|
|
|
mbuf = modebuf + mlen;
|
|
pbuf = parabuf;
|
|
plen = modecount = 0;
|
|
}
|
|
|
|
if (forward != NULL)
|
|
forward[-1] = '$';
|
|
|
|
*mbuf++ = parv[3][0];
|
|
arglen = rb_sprintf(pbuf, "%s ", s);
|
|
pbuf += arglen;
|
|
plen += arglen;
|
|
modecount++;
|
|
}
|
|
|
|
nextban:
|
|
s = t;
|
|
|
|
if(s != NULL)
|
|
{
|
|
if((t = strchr(s, ' ')) != NULL)
|
|
{
|
|
*t++ = '\0';
|
|
|
|
while(*t == ' ')
|
|
t++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(modecount)
|
|
{
|
|
*mbuf = '\0';
|
|
*(pbuf - 1) = '\0';
|
|
sendto_channel_local(mems, chptr, "%s %s", modebuf, parabuf);
|
|
}
|
|
|
|
sendto_server(client_p, chptr, CAP_TS6 | needcap, NOCAPS, ":%s BMASK %ld %s %s :%s",
|
|
source_p->id, (long) chptr->channelts, chptr->chname, parv[3], parv[4]);
|
|
return 0;
|
|
}
|
|
|