mirror of git://git.acid.vegas/unrealircd.git
200 lines
4.8 KiB
C
200 lines
4.8 KiB
C
/*
|
|
* Channel Mode +l
|
|
* (C) Copyright 2021 Syzop and the UnrealIRCd 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include "unrealircd.h"
|
|
|
|
ModuleHeader MOD_HEADER
|
|
= {
|
|
"chanmodes/limit",
|
|
"6.0",
|
|
"Channel Mode +l",
|
|
"UnrealIRCd Team",
|
|
"unrealircd-6",
|
|
};
|
|
|
|
typedef struct ChannelLimit ChannelLimit;
|
|
struct ChannelLimit {
|
|
int limit;
|
|
};
|
|
|
|
/* Global variables */
|
|
ModDataInfo *mdlimit = NULL;
|
|
Cmode_t EXTMODE_LIMIT = 0L;
|
|
|
|
#define IsLimit(x) ((x)->mode.mode & EXTMODE_LIMIT)
|
|
|
|
/* Just for buffers, nothing else */
|
|
#define LIMITLEN 32
|
|
|
|
/* Forward declarations */
|
|
int limit_can_join(Client *client, Channel *channel, const char *key, char **errmsg);
|
|
int cmode_limit_is_ok(Client *client, Channel *channel, char mode, const char *para, int type, int what);
|
|
void *cmode_limit_put_param(void *r_in, const char *param);
|
|
const char *cmode_limit_get_param(void *r_in);
|
|
const char *cmode_limit_conv_param(const char *param_in, Client *client, Channel *channel);
|
|
int cmode_limit_free_param(void *r, int soft);
|
|
void *cmode_limit_dup_struct(void *r_in);
|
|
int cmode_limit_sjoin_check(Channel *channel, void *ourx, void *theirx);
|
|
int transform_channel_limit(const char *param);
|
|
|
|
MOD_INIT()
|
|
{
|
|
CmodeInfo creq;
|
|
ModDataInfo mreq;
|
|
|
|
MARK_AS_OFFICIAL_MODULE(modinfo);
|
|
|
|
memset(&creq, 0, sizeof(creq));
|
|
creq.paracount = 1;
|
|
creq.is_ok = cmode_limit_is_ok;
|
|
creq.letter = 'l';
|
|
creq.put_param = cmode_limit_put_param;
|
|
creq.get_param = cmode_limit_get_param;
|
|
creq.conv_param = cmode_limit_conv_param;
|
|
creq.free_param = cmode_limit_free_param;
|
|
creq.dup_struct = cmode_limit_dup_struct;
|
|
creq.sjoin_check = cmode_limit_sjoin_check;
|
|
CmodeAdd(modinfo->handle, creq, &EXTMODE_LIMIT);
|
|
|
|
HookAdd(modinfo->handle, HOOKTYPE_CAN_JOIN, 0, limit_can_join);
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
MOD_LOAD()
|
|
{
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
MOD_UNLOAD()
|
|
{
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
/** Can the user join the channel? */
|
|
int limit_can_join(Client *client, Channel *channel, const char *key, char **errmsg)
|
|
{
|
|
ChannelLimit *r = (ChannelLimit *)GETPARASTRUCT(channel, 'l');
|
|
|
|
/* Is the channel +l? */
|
|
if (r && r->limit && (channel->users >= r->limit))
|
|
{
|
|
Hook *h;
|
|
for (h = Hooks[HOOKTYPE_CAN_JOIN_LIMITEXCEEDED]; h; h = h->next)
|
|
{
|
|
int i = (*(h->func.intfunc))(client,channel,key,errmsg);
|
|
if (i != 0)
|
|
return i;
|
|
}
|
|
*errmsg = STR_ERR_CHANNELISFULL;
|
|
return ERR_CHANNELISFULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cmode_limit_is_ok(Client *client, Channel *channel, char mode, const char *param, int type, int what)
|
|
{
|
|
if ((type == EXCHK_ACCESS) || (type == EXCHK_ACCESS_ERR))
|
|
{
|
|
/* Permitted for +hoaq */
|
|
if (IsUser(client) && check_channel_access(client, channel, "hoaq"))
|
|
return EX_ALLOW;
|
|
return EX_DENY;
|
|
} else
|
|
if (type == EXCHK_PARAM)
|
|
{
|
|
/* Actually any value is valid, we just morph it */
|
|
return EX_ALLOW;
|
|
}
|
|
|
|
/* fallthrough -- should not be used */
|
|
return EX_DENY;
|
|
}
|
|
|
|
void *cmode_limit_put_param(void *k_in, const char *param)
|
|
{
|
|
ChannelLimit *fld = (ChannelLimit *)k_in;
|
|
|
|
if (!fld)
|
|
fld = safe_alloc(sizeof(ChannelLimit));
|
|
|
|
fld->limit = transform_channel_limit(param);
|
|
|
|
return fld;
|
|
}
|
|
|
|
const char *cmode_limit_get_param(void *r_in)
|
|
{
|
|
ChannelLimit *r = (ChannelLimit *)r_in;
|
|
static char retbuf[32];
|
|
|
|
if (!r)
|
|
return NULL;
|
|
|
|
snprintf(retbuf, sizeof(retbuf), "%d", r->limit);
|
|
return retbuf;
|
|
}
|
|
|
|
const char *cmode_limit_conv_param(const char *param, Client *client, Channel *channel)
|
|
{
|
|
static char retbuf[32];
|
|
int v = transform_channel_limit(param);
|
|
snprintf(retbuf, sizeof(retbuf), "%d", v);
|
|
return retbuf;
|
|
}
|
|
|
|
int cmode_limit_free_param(void *r, int soft)
|
|
{
|
|
safe_free(r);
|
|
return 0;
|
|
}
|
|
|
|
void *cmode_limit_dup_struct(void *r_in)
|
|
{
|
|
ChannelLimit *r = (ChannelLimit *)r_in;
|
|
ChannelLimit *w = safe_alloc(sizeof(ChannelLimit));
|
|
|
|
memcpy(w, r, sizeof(ChannelLimit));
|
|
|
|
return (void *)w;
|
|
}
|
|
|
|
int cmode_limit_sjoin_check(Channel *channel, void *ourx, void *theirx)
|
|
{
|
|
ChannelLimit *our = (ChannelLimit *)ourx;
|
|
ChannelLimit *their = (ChannelLimit *)theirx;
|
|
|
|
if (our->limit == their->limit)
|
|
return EXSJ_SAME;
|
|
else if (our->limit > their->limit)
|
|
return EXSJ_WEWON;
|
|
else
|
|
return EXSJ_THEYWON;
|
|
}
|
|
|
|
int transform_channel_limit(const char *param)
|
|
{
|
|
int v = atoi(param);
|
|
if (v <= 0)
|
|
v = 1; /* setting +l with a negative number makes no sense */
|
|
if (v > 1000000)
|
|
v = 1000000; /* some kind of limit, 1 million (mrah...) */
|
|
return v;
|
|
}
|