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NeoStats-NeoIRCd/modules/m_join.c

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/*
* NeoIRCd: NeoStats Group. Based on Hybird7
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* m_join.c: Joins a channel.
*
* Copyright (C) 2002 by the past and present ircd coders, and others.
*
* 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
*
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* $Id: m_join.c,v 1.13 2003/03/06 14:01:46 fishwaldo Exp $
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*/
#include "stdinc.h"
#include "tools.h"
#include "handlers.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "common.h" /* bleah */
#include "resv.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "list.h"
#include "numeric.h"
#include "send.h"
#include "s_serv.h"
#include "s_conf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
static void m_join(struct Client*, struct Client*, int, char**);
static void ms_join(struct Client*, struct Client*, int, char**);
struct Message join_msgtab = {
"JOIN", 0, 0, 2, 0, MFLG_SLOW, 0,
{m_unregistered, m_join, ms_join, m_join}
};
#ifndef STATIC_MODULES
void
_modinit(void)
{
mod_add_cmd(&join_msgtab);
}
void
_moddeinit(void)
{
mod_del_cmd(&join_msgtab);
}
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const char *_version = "$Revision: 1.13 $";
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#endif
static void do_join_0(struct Client *client_p, struct Client *source_p);
void check_spambot_warning(struct Client *source_p, const char *name);
/*
* m_join
* parv[0] = sender prefix
* parv[1] = channel
* parv[2] = channel password (key) (or vkey for vchans)
* parv[3] = vkey
*/
static void
m_join(struct Client *client_p,
struct Client *source_p,
int parc,
char *parv[])
{
struct Channel *chptr = NULL;
struct Channel *root_chptr = NULL;
char *name, *key = NULL;
char *vkey = NULL; /* !key for vchans */
int i, flags = 0;
char *p = NULL, *p2 = NULL, *p3 = NULL;
int successful_join_count = 0; /* Number of channels successfully joined */
int burst_modes = NO;
char modebuf[MODEBUFLEN];
char parabuf[MODEBUFLEN];
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if (*parv[1] == '\0')
{
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
me.name, parv[0], "JOIN");
return;
}
if (parc > 2)
{
key = strtoken(&p2, parv[2], ",");
vkey = key;
}
for (name = strtoken(&p, parv[1], ","); name;
key = (key) ? strtoken(&p2, NULL, ",") : NULL,
vkey = (parc>3) ? ((vkey) ? strtoken(&p3, NULL, ",") : NULL) : key,
name = strtoken(&p, NULL, ","))
{
modebuf[0] = '+';
modebuf[1] = '\0';
parabuf[0] = '\0';
burst_modes = NO;
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if(!check_channel_name(name))
{
sendto_one(source_p, form_str(ERR_BADCHANNAME),
me.name, source_p->name, (unsigned char*)name);
continue;
}
/*
** JOIN 0 sends out a part for all channels a user
** has joined.
**
** this should be either disabled or selectable in
** config file .. it's abused a lot more than it's
** used these days :/ --is
*/
if (*name == '0' && !atoi(name))
{
if (source_p->user->channel.head == NULL)
continue;
do_join_0(&me,source_p);
continue;
}
/* check it begins with # or & */
else if(!IsChannelName(name))
{
sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
me.name, source_p->name, name);
continue;
}
if(ConfigServerHide.disable_local_channels && (*name == '&'))
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{
sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
me.name, source_p->name, name);
continue;
}
/* check the length */
if (strlen(name) > CHANNELLEN)
{
sendto_one(source_p, form_str(ERR_BADCHANNAME),
me.name, source_p->name, name);
continue;
}
/* see if its resv'd */
if(find_channel_resv(name) &&
!(IsOper(source_p) && ConfigChannel.oper_pass_resv))
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{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, source_p->name, name);
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sendto_realops_flags(FLAGS_SPY|FLAGS_REMOTE, L_ALL,
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"User %s (%s@%s) is attempting to join locally juped channel %s",
source_p->name, source_p->username, source_p->host, name);
continue;
}
if ((source_p->user->joined >= ConfigChannel.max_chans_per_user) &&
(!IsOper(source_p) || (source_p->user->joined >=
ConfigChannel.max_chans_per_user*3)))
{
sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS),
me.name, parv[0], name);
if(successful_join_count != 0)
source_p->localClient->last_join_time = CurrentTime;
return;
}
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/* look for the channel */
if((chptr = hash_find_channel(name)) != NULL)
{
if(IsMember(source_p, chptr))
return;
if(splitmode && !IsOper(source_p) && (*name != '&') &&
ConfigChannel.no_join_on_split)
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{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, source_p->name, name);
continue;
}
root_chptr = chptr;
/* save the expense of calling channel_modes()
* if zero users on channel, then I have to call channel_modes().
* (N.B. if channel_modes() was rewritten to be sane and fast
* this check wouldn't be worth the bother.)
* Just because client ends up a chanop, doesn't mean
* channel_modes() has to be called.
* -Dianora
*/
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if (chptr->users == 0)
{
flags = CHFL_ADMIN;
burst_modes = YES;
}
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else
flags = 0;
}
else /* channel does NOT exist, so create it */
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{
if(splitmode && !IsOper(source_p) && (*name != '&') &&
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(ConfigChannel.no_create_on_split || ConfigChannel.no_join_on_split))
{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, source_p->name, name);
continue;
}
flags = CHFL_ADMIN;
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if(!ServerInfo.hub)
{
/* LazyLinks */
if((*name != '&') && uplink && IsCapable(uplink, CAP_LL))
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{
sendto_one(uplink,":%s CBURST %s %s %s",
me.name,name,source_p->name, key ? key: "" );
/* And wait for LLJOIN */
return;
}
}
/* So create it */
if ((chptr = get_or_create_channel(source_p, name, NULL)) == NULL)
{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, parv[0], name);
continue;
}
else
root_chptr = chptr;
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}
if (!IsOper(source_p))
check_spambot_warning(source_p, name);
/*
* can_join checks for +i key, bans.
*/
if ((i = can_join(source_p, chptr, key)))
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{
sendto_one(source_p, form_str(i), me.name, parv[0], name);
successful_join_count++;
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continue;
}
/* add the user to the channel */
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add_user_to_channel(chptr, source_p, flags);
/*
** Set timestamp if appropriate, and propagate
*/
if (flags & CHFL_ADMIN)
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{
chptr->channelts = CurrentTime;
/* detected a persistent channel, so
* have to call channel_modes() here.
*/
if (burst_modes)
{
channel_modes(chptr, client_p, modebuf, parabuf);
}
else /* Otherwise, its a stock +nt */
{
chptr->mode.mode |= MODE_TOPICLIMIT;
chptr->mode.mode |= MODE_NOPRIVMSGS;
modebuf[0] = '+';
modebuf[1] = 'n';
modebuf[2] = 't';
modebuf[3] = '\0';
}
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sendto_server(client_p, source_p, chptr, NOCAPS, NOCAPS,
LL_ICLIENT,
":%s SJOIN %lu %s %s %s :!%s",
me.name, (unsigned long) chptr->channelts,
chptr->chname, modebuf, parabuf, parv[0]);
/*
* notify all other users on the new channel
*/
/* XXX just exactly who is going to be =on= this new channel
* other than just the creator at this time? ? ?
*/
sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
source_p->name, source_p->username,
source_p->vhost, root_chptr->chname);
sendto_channel_local(ONLY_CHANOPS_HALFOPS,chptr,
":%s MODE %s %s %s",
me.name, root_chptr->chname,
modebuf, parabuf);
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}
else
{
sendto_server(client_p, source_p, chptr, NOCAPS, NOCAPS,
LL_ICLIENT,
":%s SJOIN %lu %s %s %s:%s",
me.name, (unsigned long) chptr->channelts,
chptr->chname, modebuf, parabuf, parv[0]);
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sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
source_p->name, source_p->username,
source_p->vhost, root_chptr->chname);
}
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del_invite(chptr, source_p);
if (chptr->topic != NULL)
{
sendto_one(source_p, form_str(RPL_TOPIC), me.name,
parv[0], root_chptr->chname, chptr->topic);
if (!(chptr->mode.mode & MODE_HIDEOPS) ||
(flags & CHFL_CHANOP) || (flags & CHFL_HALFOP) || (flags & CHFL_ADMIN))
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{
sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
me.name, parv[0], root_chptr->chname,
chptr->topic_info, chptr->topic_time);
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}
else /* Hide from nonops */
{
sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
me.name, parv[0], root_chptr->chname,
me.name, chptr->topic_time);
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}
}
channel_member_names(source_p, chptr, root_chptr->chname, 1);
if(successful_join_count != 0)
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source_p->localClient->last_join_time = CurrentTime;
}
}
/*
* ms_join
*
* inputs -
* output - none
* side effects - handles remote JOIN's sent by servers. In TSora
* remote clients are joined using SJOIN, hence a
* JOIN sent by a server on behalf of a client is an error.
* here, the initial code is in to take an extra parameter
* and use it for the TimeStamp on a new channel.
*/
static void
ms_join(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
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{
char *name;
int new_ts;
if ((source_p->user) == NULL)
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return;
name = parv[1];
/*
* stupid legacy here. If remote server joins someone to "0"
* thats a signal to remove this client from all channels.
* note, the string "0" is simply '0' '\0' this following "if"
* is faster then a strcmp.
*/
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if ((name[0] == '0') && (name[1] == '\0'))
{
do_join_0(client_p, source_p);
}
else
{
if(parc > 2)
{
new_ts = atoi(parv[2]);
}
else
{
ts_warn("User on %s remotely JOINing new channel with no TS",
source_p->user->server);
}
}
}
/*
* do_join_0
*
* inputs - pointer to client doing join 0
* output - NONE
* side effects - Use has decided to join 0. This is legacy
* from the days when channels were numbers not names. *sigh*
* There is a bunch of evilness necessary here due to
* anti spambot code.
*/
static void
do_join_0(struct Client *client_p, struct Client *source_p)
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{
struct Channel *chptr=NULL;
dlink_node *lp;
sendto_server(client_p, source_p, NULL, NOCAPS, NOCAPS, NOFLAGS,
":%s JOIN 0", source_p->name);
if (source_p->user->channel.head &&
MyConnect(source_p) && !IsOper(source_p))
check_spambot_warning(source_p, NULL);
while ((lp = source_p->user->channel.head))
{
chptr = lp->data;
sendto_channel_local(ALL_MEMBERS,chptr, ":%s!%s@%s PART %s",
source_p->name, source_p->username,
source_p->vhost, chptr->chname);
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if (!IsDefunct(source_p))
remove_user_from_channel(chptr, source_p);
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}
}