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construct/modules/core/m_join.c
Elizabeth Myers 3c7d6fcce7 Message handlers should return void. 
Also fix up some return values and stuff to use bool (or void if
nothing). I just did it whilst I was here.

According to jilles, the return value used to signify whether or not the
client had exited. This was error-prone and was fixed a long, long time
ago, but the return value was left int for historical reasons.

Since the return type is not used (and has no clear use case anyway),
it's safe to just get rid of it.
2016-03-09 01:37:03 -06:00

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/*
* ircd-ratbox: A slightly useful ircd.
* m_join.c: Joins a channel.
*
* 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
*/
#include "stdinc.h"
#include "channel.h"
#include "client.h"
#include "common.h"
#include "hash.h"
#include "match.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "s_serv.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "packet.h"
#include "chmode.h"
#include "ratelimit.h"
#include "s_assert.h"
static const char join_desc[] = "Provides the JOIN and TS6 SJOIN commands to facilitate joining and creating channels";
static void m_join(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void ms_join(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void ms_sjoin(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static int h_can_create_channel;
static int h_channel_join;
struct Message join_msgtab = {
"JOIN", 0, 0, 0, 0,
{mg_unreg, {m_join, 2}, {ms_join, 2}, mg_ignore, mg_ignore, {m_join, 2}}
};
struct Message sjoin_msgtab = {
"SJOIN", 0, 0, 0, 0,
{mg_unreg, mg_ignore, mg_ignore, {ms_sjoin, 4}, mg_ignore, mg_ignore}
};
mapi_clist_av1 join_clist[] = { &join_msgtab, &sjoin_msgtab, NULL };
mapi_hlist_av1 join_hlist[] = {
{ "can_create_channel", &h_can_create_channel },
{ "channel_join", &h_channel_join },
{ NULL, NULL },
};
DECLARE_MODULE_AV2(join, NULL, NULL, join_clist, join_hlist, NULL, NULL, NULL, join_desc);
static void do_join_0(struct Client *client_p, struct Client *source_p);
static bool check_channel_name_loc(struct Client *source_p, const char *name);
static void send_join_error(struct Client *source_p, int numeric, const char *name);
static void set_final_mode(struct Mode *mode, struct Mode *oldmode);
static void remove_our_modes(struct Channel *chptr, struct Client *source_p);
static void remove_ban_list(struct Channel *chptr, struct Client *source_p,
rb_dlink_list * list, char c, int mems);
static char modebuf[MODEBUFLEN];
static char parabuf[MODEBUFLEN];
static const char *para[MAXMODEPARAMS];
static char *mbuf;
static int pargs;
/* Check what we will forward to, without sending any notices to the user
* -- jilles
*/
static struct Channel *
check_forward(struct Client *source_p, struct Channel *chptr,
char *key, int *err)
{
int depth = 0, i;
const char *next = NULL;
/* The caller (m_join) is only interested in the reason
* for the original channel.
*/
if ((*err = can_join(source_p, chptr, key, &next)) == 0)
return chptr;
/* User is +Q, or forwarding disabled */
if (IsNoForward(source_p) || !ConfigChannel.use_forward)
return NULL;
while (depth < 16)
{
if (next == NULL)
return NULL;
chptr = find_channel(next);
/* Can only forward to existing channels */
if (chptr == NULL)
return NULL;
/* Already on there, show original error message */
if (IsMember(source_p, chptr))
return NULL;
/* Juped. Sending a warning notice would be unfair */
if (hash_find_resv(chptr->chname))
return NULL;
/* Don't forward to +Q channel */
if (chptr->mode.mode & MODE_DISFORWARD)
return NULL;
i = can_join(source_p, chptr, key, &next);
if (i == 0)
return chptr;
depth++;
}
return NULL;
}
/*
* m_join
* parv[1] = channel
* parv[2] = channel password (key)
*/
static void
m_join(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
static char jbuf[BUFSIZE];
struct Channel *chptr = NULL, *chptr2 = NULL;
struct ConfItem *aconf;
char *name;
char *key = NULL;
const char *modes;
int i, flags = 0;
char *p = NULL, *p2 = NULL;
char *chanlist;
char *mykey;
jbuf[0] = '\0';
/* rebuild the list of channels theyre supposed to be joining.
* this code has a side effect of losing keys, but..
*/
chanlist = LOCAL_COPY(parv[1]);
for(name = rb_strtok_r(chanlist, ",", &p); name; name = rb_strtok_r(NULL, ",", &p))
{
/* check the length and name of channel is ok */
if(!check_channel_name_loc(source_p, name) || (strlen(name) > LOC_CHANNELLEN))
{
sendto_one_numeric(source_p, ERR_BADCHANNAME,
form_str(ERR_BADCHANNAME), (unsigned char *) name);
continue;
}
/* join 0 parts all channels */
if(*name == '0' && (name[1] == ',' || name[1] == '\0') && name == chanlist)
{
(void) strcpy(jbuf, "0");
continue;
}
/* check it begins with # or &, and local chans are disabled */
else if(!IsChannelName(name) ||
( ConfigChannel.disable_local_channels && name[0] == '&'))
{
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
form_str(ERR_NOSUCHCHANNEL), name);
continue;
}
/* see if its resv'd */
if(!IsExemptResv(source_p) && (aconf = hash_find_resv(name)))
{
sendto_one_numeric(source_p, ERR_BADCHANNAME,
form_str(ERR_BADCHANNAME), name);
/* dont warn for opers */
if(!IsExemptJupe(source_p) && !IsOper(source_p))
sendto_realops_snomask(SNO_SPY, L_NETWIDE,
"User %s (%s@%s) is attempting to join locally juped channel %s (%s)",
source_p->name, source_p->username,
source_p->orighost, name, aconf->passwd);
/* dont update tracking for jupe exempt users, these
* are likely to be spamtrap leaves
*/
else if(IsExemptJupe(source_p))
aconf->port--;
continue;
}
if(splitmode && !IsOper(source_p) && (*name != '&') &&
ConfigChannel.no_join_on_split)
{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, source_p->name, name);
continue;
}
if(*jbuf)
(void) strcat(jbuf, ",");
(void) rb_strlcat(jbuf, name, sizeof(jbuf));
}
if(parc > 2)
{
mykey = LOCAL_COPY(parv[2]);
key = rb_strtok_r(mykey, ",", &p2);
}
for(name = rb_strtok_r(jbuf, ",", &p); name;
key = (key) ? rb_strtok_r(NULL, ",", &p2) : NULL, name = rb_strtok_r(NULL, ",", &p))
{
hook_data_channel_activity hook_info;
/* JOIN 0 simply parts all channels the user is in */
if(*name == '0' && !atoi(name))
{
if(source_p->user->channel.head == NULL)
continue;
do_join_0(&me, source_p);
continue;
}
/* look for the channel */
if((chptr = find_channel(name)) != NULL)
{
if(IsMember(source_p, chptr))
continue;
flags = 0;
}
else
{
hook_data_client_approval moduledata;
moduledata.client = source_p;
moduledata.approved = 0;
call_hook(h_can_create_channel, &moduledata);
if(moduledata.approved != 0)
{
if(moduledata.approved != ERR_CUSTOM)
send_join_error(source_p,
moduledata.approved,
name);
continue;
}
if(splitmode && !IsOper(source_p) && (*name != '&') &&
ConfigChannel.no_create_on_split)
{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, source_p->name, name);
continue;
}
flags = CHFL_CHANOP;
}
if((rb_dlink_list_length(&source_p->user->channel) >=
(unsigned long) ConfigChannel.max_chans_per_user) &&
(!IsExtendChans(source_p) ||
(rb_dlink_list_length(&source_p->user->channel) >=
(unsigned long) ConfigChannel.max_chans_per_user_large)))
{
sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS),
me.name, source_p->name, name);
continue;
}
if(chptr == NULL) /* If I already have a chptr, no point doing this */
{
chptr = get_or_create_channel(source_p, name, NULL);
if(chptr == NULL)
{
sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
me.name, source_p->name, name);
continue;
}
}
/* If check_forward returns NULL, they couldn't join and there wasn't a usable forward channel. */
if(!(chptr2 = check_forward(source_p, chptr, key, &i)))
{
/* might be wrong, but is there any other better location for such?
* see extensions/chm_operonly.c for other comments on this
* -- dwr
*/
if(i != ERR_CUSTOM)
send_join_error(source_p, i, name);
continue;
}
else if(chptr != chptr2)
sendto_one_numeric(source_p, ERR_LINKCHANNEL, form_str(ERR_LINKCHANNEL), name, chptr2->chname);
chptr = chptr2;
if(flags == 0 &&
!IsOper(source_p) && !IsExemptSpambot(source_p))
check_spambot_warning(source_p, name);
/* add the user to the channel */
add_user_to_channel(chptr, source_p, flags);
if (chptr->mode.join_num &&
rb_current_time() - chptr->join_delta >= chptr->mode.join_time)
{
chptr->join_count = 0;
chptr->join_delta = rb_current_time();
}
chptr->join_count++;
/* credit user for join */
credit_client_join(source_p);
/* we send the user their join here, because we could have to
* send a mode out next.
*/
send_channel_join(chptr, source_p);
/* its a new channel, set +nt and burst. */
if(flags & CHFL_CHANOP)
{
chptr->channelts = rb_current_time();
chptr->mode.mode |= ConfigChannel.autochanmodes;
modes = channel_modes(chptr, &me);
sendto_channel_local(ONLY_CHANOPS, chptr, ":%s MODE %s %s",
me.name, chptr->chname, modes);
sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
":%s SJOIN %ld %s %s :@%s",
me.id, (long) chptr->channelts,
chptr->chname, modes, source_p->id);
}
else
{
sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
":%s JOIN %ld %s +",
use_id(source_p), (long) chptr->channelts,
chptr->chname);
}
del_invite(chptr, source_p);
if(chptr->topic != NULL)
{
sendto_one(source_p, form_str(RPL_TOPIC), me.name,
source_p->name, chptr->chname, chptr->topic);
sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
me.name, source_p->name, chptr->chname,
chptr->topic_info,
(unsigned long)chptr->topic_time);
}
channel_member_names(chptr, source_p, 1);
hook_info.client = source_p;
hook_info.chptr = chptr;
hook_info.key = key;
call_hook(h_channel_join, &hook_info);
}
}
/*
* ms_join
* parv[1] = channel TS
* parv[2] = channel
* parv[3] = "+", formerly channel modes but now unused
* alternatively, a single "0" parameter parts all channels
*/
static void
ms_join(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct Channel *chptr;
static struct Mode mode;
time_t oldts;
time_t newts;
int isnew;
bool keep_our_modes = true;
rb_dlink_node *ptr, *next_ptr;
/* special case for join 0 */
if((parv[1][0] == '0') && (parv[1][1] == '\0') && parc == 2)
{
do_join_0(client_p, source_p);
return;
}
if(parc < 4)
return;
if(!IsChannelName(parv[2]) || !check_channel_name(parv[2]))
return;
/* joins for local channels cant happen. */
if(parv[2][0] == '&')
return;
mbuf = modebuf;
mode.key[0] = mode.forward[0] = '\0';
mode.mode = mode.limit = mode.join_num = mode.join_time = 0;
if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL)
return;
newts = atol(parv[1]);
oldts = chptr->channelts;
#ifdef IGNORE_BOGUS_TS
if(newts < 800000000)
{
sendto_realops_snomask(SNO_DEBUG, L_ALL,
"*** Bogus TS %ld on %s ignored from %s",
(long) newts, chptr->chname, client_p->name);
newts = (oldts == 0) ? oldts : 800000000;
}
#else
/* making a channel TS0 */
if(!isnew && !newts && oldts)
{
sendto_channel_local(ALL_MEMBERS, chptr,
":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to 0",
me.name, chptr->chname, chptr->chname, (long) oldts);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"Server %s changing TS on %s from %ld to 0",
source_p->name, chptr->chname, (long) oldts);
}
#endif
if(isnew)
chptr->channelts = newts;
else if(newts == 0 || oldts == 0)
chptr->channelts = 0;
else if(newts == oldts)
;
else if(newts < oldts)
{
keep_our_modes = false;
chptr->channelts = newts;
}
/* Lost the TS, other side wins, so remove modes on this side */
if(!keep_our_modes)
{
set_final_mode(&mode, &chptr->mode);
chptr->mode = mode;
remove_our_modes(chptr, source_p);
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head)
{
del_invite(chptr, ptr->data);
}
/* If setting -j, clear join throttle state -- jilles */
chptr->join_count = chptr->join_delta = 0;
sendto_channel_local(ALL_MEMBERS, chptr,
":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld",
me.name, chptr->chname, chptr->chname,
(long) oldts, (long) newts);
/* Update capitalization in channel name, this makes the
* capitalization timestamped like modes are -- jilles */
strcpy(chptr->chname, parv[2]);
if(*modebuf != '\0')
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s",
source_p->servptr->name,
chptr->chname, modebuf, parabuf);
*modebuf = *parabuf = '\0';
/* since we're dropping our modes, we want to clear the mlock as well. --nenolod */
set_channel_mlock(client_p, source_p, chptr, NULL, false);
}
if(!IsMember(source_p, chptr))
{
add_user_to_channel(chptr, source_p, CHFL_PEON);
if (chptr->mode.join_num &&
rb_current_time() - chptr->join_delta >= chptr->mode.join_time)
{
chptr->join_count = 0;
chptr->join_delta = rb_current_time();
}
chptr->join_count++;
send_channel_join(chptr, source_p);
}
sendto_server(client_p, chptr, CAP_TS6, NOCAPS,
":%s JOIN %ld %s +",
source_p->id, (long) chptr->channelts, chptr->chname);
}
static void
ms_sjoin(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
static char buf_uid[BUFSIZE];
static const char empty_modes[] = "0";
struct Channel *chptr;
struct Client *target_p, *fakesource_p;
time_t newts;
time_t oldts;
static struct Mode mode, *oldmode;
const char *modes;
int args = 0;
bool keep_our_modes = true;
bool keep_new_modes = true;
int fl;
int isnew;
int mlen_uid;
int len_uid;
int len;
int joins = 0;
const char *s;
char *ptr_uid;
char *p;
int i, joinc = 0, timeslice = 0;
static char empty[] = "";
rb_dlink_node *ptr, *next_ptr;
if(parc < 5)
return;
if(!IsChannelName(parv[2]) || !check_channel_name(parv[2]))
return;
/* SJOIN's for local channels can't happen. */
if(*parv[2] == '&')
return;
modebuf[0] = parabuf[0] = mode.key[0] = mode.forward[0] = '\0';
pargs = mode.mode = mode.limit = mode.join_num = mode.join_time = 0;
/* Hide connecting server on netburst -- jilles */
if (ConfigServerHide.flatten_links && !HasSentEob(source_p))
fakesource_p = &me;
else
fakesource_p = source_p;
mbuf = modebuf;
newts = atol(parv[1]);
s = parv[3];
while (*s)
{
switch (*(s++))
{
case 'f':
rb_strlcpy(mode.forward, parv[4 + args], sizeof(mode.forward));
args++;
if(parc < 5 + args)
return;
break;
case 'j':
sscanf(parv[4 + args], "%d:%d", &joinc, &timeslice);
args++;
mode.join_num = joinc;
mode.join_time = timeslice;
if(parc < 5 + args)
return;
break;
case 'k':
rb_strlcpy(mode.key, parv[4 + args], sizeof(mode.key));
args++;
if(parc < 5 + args)
return;
break;
case 'l':
mode.limit = atoi(parv[4 + args]);
args++;
if(parc < 5 + args)
return;
break;
default:
if(chmode_flags[(int) *s] != 0)
{
mode.mode |= chmode_flags[(int) *s];
}
}
}
if(parv[args + 4])
{
s = parv[args + 4];
/* remove any leading spaces */
while (*s == ' ')
s++;
}
else
s = "";
if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL)
return; /* channel name too long? */
oldts = chptr->channelts;
oldmode = &chptr->mode;
#ifdef IGNORE_BOGUS_TS
if(newts < 800000000)
{
sendto_realops_snomask(SNO_DEBUG, L_ALL,
"*** Bogus TS %ld on %s ignored from %s",
(long) newts, chptr->chname, client_p->name);
newts = (oldts == 0) ? oldts : 800000000;
}
#else
if(!isnew && !newts && oldts)
{
sendto_channel_local(ALL_MEMBERS, chptr,
":%s NOTICE %s :*** Notice -- TS for %s "
"changed from %ld to 0",
me.name, chptr->chname, chptr->chname, (long) oldts);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"Server %s changing TS on %s from %ld to 0",
source_p->name, chptr->chname, (long) oldts);
}
#endif
if(isnew)
chptr->channelts = newts;
else if(newts == 0 || oldts == 0)
chptr->channelts = 0;
else if(newts == oldts)
;
else if(newts < oldts)
{
/* If configured, kick people trying to join +i/+k
* channels by recreating them on split servers.
* If the source has sent EOB, assume this is some
* sort of hack by services. If cmode +i is set,
* services can send kicks if needed; if the key
* differs, services cannot kick in a race-free
* manner so do so here.
* -- jilles */
if (ConfigChannel.kick_on_split_riding &&
((!HasSentEob(source_p) &&
mode.mode & MODE_INVITEONLY) ||
(mode.key[0] != 0 && irccmp(mode.key, oldmode->key) != 0)))
{
struct membership *msptr;
struct Client *who;
int l = rb_dlink_list_length(&chptr->members);
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head)
{
msptr = ptr->data;
who = msptr->client_p;
sendto_one(who, ":%s KICK %s %s :Net Rider",
me.name, chptr->chname, who->name);
sendto_server(NULL, chptr, CAP_TS6, NOCAPS,
":%s KICK %s %s :Net Rider",
me.id, chptr->chname,
who->id);
remove_user_from_channel(msptr);
if (--l == 0)
break;
}
if (l == 0)
{
/* Channel was emptied, create a new one */
if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL)
return; /* oops! */
oldmode = &chptr->mode;
}
}
keep_our_modes = false;
chptr->channelts = newts;
}
else
keep_new_modes = false;
if(!keep_new_modes)
mode = *oldmode;
else if(keep_our_modes)
{
mode.mode |= oldmode->mode;
if(oldmode->limit > mode.limit)
mode.limit = oldmode->limit;
if(strcmp(mode.key, oldmode->key) < 0)
strcpy(mode.key, oldmode->key);
if(oldmode->join_num > mode.join_num ||
(oldmode->join_num == mode.join_num &&
oldmode->join_time > mode.join_time))
{
mode.join_num = oldmode->join_num;
mode.join_time = oldmode->join_time;
}
if(irccmp(mode.forward, oldmode->forward) < 0)
strcpy(mode.forward, oldmode->forward);
}
else
{
/* If setting -j, clear join throttle state -- jilles */
if (!mode.join_num)
chptr->join_count = chptr->join_delta = 0;
}
set_final_mode(&mode, oldmode);
chptr->mode = mode;
/* Lost the TS, other side wins, so remove modes on this side */
if(!keep_our_modes)
{
remove_our_modes(chptr, fakesource_p);
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head)
{
del_invite(chptr, ptr->data);
}
if(rb_dlink_list_length(&chptr->banlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->banlist, 'b', ALL_MEMBERS);
if(rb_dlink_list_length(&chptr->exceptlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->exceptlist,
'e', ONLY_CHANOPS);
if(rb_dlink_list_length(&chptr->invexlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->invexlist,
'I', ONLY_CHANOPS);
if(rb_dlink_list_length(&chptr->quietlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->quietlist,
'q', ALL_MEMBERS);
chptr->bants++;
sendto_channel_local(ALL_MEMBERS, chptr,
":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld",
me.name, chptr->chname, chptr->chname,
(long) oldts, (long) newts);
/* Update capitalization in channel name, this makes the
* capitalization timestamped like modes are -- jilles */
strcpy(chptr->chname, parv[2]);
/* since we're dropping our modes, we want to clear the mlock as well. --nenolod */
set_channel_mlock(client_p, source_p, chptr, NULL, false);
}
if(*modebuf != '\0')
sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s",
fakesource_p->name, chptr->chname, modebuf, parabuf);
*modebuf = *parabuf = '\0';
if(parv[3][0] != '0' && keep_new_modes)
modes = channel_modes(chptr, source_p);
else
modes = empty_modes;
mlen_uid = sprintf(buf_uid, ":%s SJOIN %ld %s %s :",
use_id(source_p), (long) chptr->channelts, parv[2], modes);
ptr_uid = buf_uid + mlen_uid;
mbuf = modebuf;
para[0] = para[1] = para[2] = para[3] = empty;
pargs = 0;
len_uid = 0;
/* if theres a space, theres going to be more than one nick, change the
* first space to \0, so s is just the first nick, and point p to the
* second nick
*/
if((p = strchr(s, ' ')) != NULL)
{
*p++ = '\0';
}
*mbuf++ = '+';
while (s)
{
fl = 0;
for (i = 0; i < 2; i++)
{
if(*s == '@')
{
fl |= CHFL_CHANOP;
s++;
}
else if(*s == '+')
{
fl |= CHFL_VOICE;
s++;
}
}
/* if the client doesnt exist or is fake direction, skip. */
if(!(target_p = find_client(s)) ||
(target_p->from != client_p) || !IsPerson(target_p))
goto nextnick;
/* we assume for these we can fit at least one nick/uid in.. */
/* check we can fit another status+nick+space into a buffer */
if((mlen_uid + len_uid + IDLEN + 3) > (BUFSIZE - 3))
{
*(ptr_uid - 1) = '\0';
sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid);
ptr_uid = buf_uid + mlen_uid;
len_uid = 0;
}
if(keep_new_modes)
{
if(fl & CHFL_CHANOP)
{
*ptr_uid++ = '@';
len_uid++;
}
if(fl & CHFL_VOICE)
{
*ptr_uid++ = '+';
len_uid++;
}
}
/* copy the nick to the two buffers */
len = sprintf(ptr_uid, "%s ", use_id(target_p));
ptr_uid += len;
len_uid += len;
if(!keep_new_modes)
fl = 0;
if(!IsMember(target_p, chptr))
{
add_user_to_channel(chptr, target_p, fl);
send_channel_join(chptr, target_p);
joins++;
}
if(fl & CHFL_CHANOP)
{
*mbuf++ = 'o';
para[pargs++] = target_p->name;
/* a +ov user.. bleh */
if(fl & CHFL_VOICE)
{
/* its possible the +o has filled up MAXMODEPARAMS, if so, start
* a new buffer
*/
if(pargs >= MAXMODEPARAMS)
{
*mbuf = '\0';
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s %s %s %s",
fakesource_p->name, chptr->chname,
modebuf,
para[0], para[1], para[2], para[3]);
mbuf = modebuf;
*mbuf++ = '+';
para[0] = para[1] = para[2] = para[3] = NULL;
pargs = 0;
}
*mbuf++ = 'v';
para[pargs++] = target_p->name;
}
}
else if(fl & CHFL_VOICE)
{
*mbuf++ = 'v';
para[pargs++] = target_p->name;
}
if(pargs >= MAXMODEPARAMS)
{
*mbuf = '\0';
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s %s %s %s",
fakesource_p->name,
chptr->chname,
modebuf, para[0], para[1], para[2], para[3]);
mbuf = modebuf;
*mbuf++ = '+';
para[0] = para[1] = para[2] = para[3] = NULL;
pargs = 0;
}
nextnick:
/* p points to the next nick */
s = p;
/* if there was a trailing space and p was pointing to it, then we
* need to exit.. this has the side effect of breaking double spaces
* in an sjoin.. but that shouldnt happen anyway
*/
if(s && (*s == '\0'))
s = p = NULL;
/* if p was NULL due to no spaces, s wont exist due to the above, so
* we cant check it for spaces.. if there are no spaces, then when
* we next get here, s will be NULL
*/
if(s && ((p = strchr(s, ' ')) != NULL))
{
*p++ = '\0';
}
}
*mbuf = '\0';
if(pargs)
{
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s %s %s %s",
fakesource_p->name, chptr->chname, modebuf,
para[0], CheckEmpty(para[1]),
CheckEmpty(para[2]), CheckEmpty(para[3]));
}
if(!joins && !(chptr->mode.mode & MODE_PERMANENT) && isnew)
{
destroy_channel(chptr);
return;
}
/* Keep the colon if we're sending an SJOIN without nicks -- jilles */
if (joins)
{
*(ptr_uid - 1) = '\0';
}
sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid);
}
/*
* 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*
*/
static void
do_join_0(struct Client *client_p, struct Client *source_p)
{
struct membership *msptr;
struct Channel *chptr = NULL;
rb_dlink_node *ptr;
/* Finish the flood grace period... */
if(MyClient(source_p) && !IsFloodDone(source_p))
flood_endgrace(source_p);
sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s JOIN 0", use_id(source_p));
while((ptr = source_p->user->channel.head))
{
if(MyConnect(source_p) &&
!IsOper(source_p) && !IsExemptSpambot(source_p))
check_spambot_warning(source_p, NULL);
msptr = ptr->data;
chptr = msptr->chptr;
sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s",
source_p->name,
source_p->username, source_p->host, chptr->chname);
remove_user_from_channel(msptr);
}
}
static bool
check_channel_name_loc(struct Client *source_p, const char *name)
{
const char *p;
s_assert(name != NULL);
if(EmptyString(name))
return false;
if(ConfigFileEntry.disable_fake_channels && !IsOper(source_p))
{
for(p = name; *p; ++p)
{
if(!IsChanChar(*p) || IsFakeChanChar(*p))
return false;
}
}
else
{
for(p = name; *p; ++p)
{
if(!IsChanChar(*p))
return false;
}
}
if(ConfigChannel.only_ascii_channels)
{
for(p = name; *p; ++p)
if(*p < 33 || *p > 126)
return false;
}
return true;
}
/* send_join_error()
*
* input - client to send to, reason, channel name
* output - none
* side effects - error message sent to client
*/
static void
send_join_error(struct Client *source_p, int numeric, const char *name)
{
/* This stuff is necessary because the form_str macro only
* accepts constants.
*/
switch (numeric)
{
#define NORMAL_NUMERIC(i) \
case i: \
sendto_one(source_p, form_str(i), \
me.name, source_p->name, name); \
break
NORMAL_NUMERIC(ERR_BANNEDFROMCHAN);
NORMAL_NUMERIC(ERR_INVITEONLYCHAN);
NORMAL_NUMERIC(ERR_BADCHANNELKEY);
NORMAL_NUMERIC(ERR_CHANNELISFULL);
NORMAL_NUMERIC(ERR_NEEDREGGEDNICK);
NORMAL_NUMERIC(ERR_THROTTLE);
default:
sendto_one_numeric(source_p, numeric,
"%s :Cannot join channel", name);
break;
}
}
static void
set_final_mode(struct Mode *mode, struct Mode *oldmode)
{
int dir = MODE_QUERY;
char *pbuf = parabuf;
int len;
int i;
/* ok, first get a list of modes we need to add */
for (i = 0; i < 256; i++)
{
if((mode->mode & chmode_flags[i]) && !(oldmode->mode & chmode_flags[i]))
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = i;
}
}
/* now the ones we need to remove. */
for (i = 0; i < 256; i++)
{
if((oldmode->mode & chmode_flags[i]) && !(mode->mode & chmode_flags[i]))
{
if(dir != MODE_DEL)
{
*mbuf++ = '-';
dir = MODE_DEL;
}
*mbuf++ = i;
}
}
if(oldmode->limit && !mode->limit)
{
if(dir != MODE_DEL)
{
*mbuf++ = '-';
dir = MODE_DEL;
}
*mbuf++ = 'l';
}
if(oldmode->key[0] && !mode->key[0])
{
if(dir != MODE_DEL)
{
*mbuf++ = '-';
dir = MODE_DEL;
}
*mbuf++ = 'k';
len = sprintf(pbuf, "%s ", oldmode->key);
pbuf += len;
}
if(oldmode->join_num && !mode->join_num)
{
if(dir != MODE_DEL)
{
*mbuf++ = '-';
dir = MODE_DEL;
}
*mbuf++ = 'j';
}
if(oldmode->forward[0] && !mode->forward[0])
{
if(dir != MODE_DEL)
{
*mbuf++ = '-';
dir = MODE_DEL;
}
*mbuf++ = 'f';
}
if(mode->limit && oldmode->limit != mode->limit)
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = 'l';
len = sprintf(pbuf, "%d ", mode->limit);
pbuf += len;
}
if(mode->key[0] && strcmp(oldmode->key, mode->key))
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = 'k';
len = sprintf(pbuf, "%s ", mode->key);
pbuf += len;
}
if(mode->join_num && (oldmode->join_num != mode->join_num || oldmode->join_time != mode->join_time))
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = 'j';
len = sprintf(pbuf, "%d:%d ", mode->join_num, mode->join_time);
pbuf += len;
}
if(mode->forward[0] && strcmp(oldmode->forward, mode->forward) &&
ConfigChannel.use_forward)
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = 'f';
len = sprintf(pbuf, "%s ", mode->forward);
pbuf += len;
}
*mbuf = '\0';
}
/*
* remove_our_modes
*
* inputs -
* output -
* side effects -
*/
static void
remove_our_modes(struct Channel *chptr, struct Client *source_p)
{
struct membership *msptr;
rb_dlink_node *ptr;
char lmodebuf[MODEBUFLEN];
char *lpara[MAXMODEPARAMS];
int count = 0;
int i;
mbuf = lmodebuf;
*mbuf++ = '-';
for(i = 0; i < MAXMODEPARAMS; i++)
lpara[i] = NULL;
RB_DLINK_FOREACH(ptr, chptr->members.head)
{
msptr = ptr->data;
if(is_chanop(msptr))
{
msptr->flags &= ~CHFL_CHANOP;
lpara[count++] = msptr->client_p->name;
*mbuf++ = 'o';
/* +ov, might not fit so check. */
if(is_voiced(msptr))
{
if(count >= MAXMODEPARAMS)
{
*mbuf = '\0';
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s %s %s %s",
source_p->name, chptr->chname,
lmodebuf, lpara[0], lpara[1],
lpara[2], lpara[3]);
/* preserve the initial '-' */
mbuf = lmodebuf;
*mbuf++ = '-';
count = 0;
for(i = 0; i < MAXMODEPARAMS; i++)
lpara[i] = NULL;
}
msptr->flags &= ~CHFL_VOICE;
lpara[count++] = msptr->client_p->name;
*mbuf++ = 'v';
}
}
else if(is_voiced(msptr))
{
msptr->flags &= ~CHFL_VOICE;
lpara[count++] = msptr->client_p->name;
*mbuf++ = 'v';
}
else
continue;
if(count >= MAXMODEPARAMS)
{
*mbuf = '\0';
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s %s %s %s",
source_p->name, chptr->chname, lmodebuf,
lpara[0], lpara[1], lpara[2], lpara[3]);
mbuf = lmodebuf;
*mbuf++ = '-';
count = 0;
for(i = 0; i < MAXMODEPARAMS; i++)
lpara[i] = NULL;
}
}
if(count != 0)
{
*mbuf = '\0';
sendto_channel_local(ALL_MEMBERS, chptr,
":%s MODE %s %s %s %s %s %s",
source_p->name, chptr->chname, lmodebuf,
EmptyString(lpara[0]) ? "" : lpara[0],
EmptyString(lpara[1]) ? "" : lpara[1],
EmptyString(lpara[2]) ? "" : lpara[2],
EmptyString(lpara[3]) ? "" : lpara[3]);
}
}
/* remove_ban_list()
*
* inputs - channel, source, list to remove, char of mode, caps needed
* outputs -
* side effects - given list is removed, with modes issued to local clients
*/
static void
remove_ban_list(struct Channel *chptr, struct Client *source_p,
rb_dlink_list * list, char c, int mems)
{
static char lmodebuf[BUFSIZE];
static char lparabuf[BUFSIZE];
struct Ban *banptr;
rb_dlink_node *ptr;
rb_dlink_node *next_ptr;
char *pbuf;
int count = 0;
int cur_len, mlen, plen;
pbuf = lparabuf;
cur_len = mlen = sprintf(lmodebuf, ":%s MODE %s -", source_p->name, chptr->chname);
mbuf = lmodebuf + mlen;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
{
banptr = ptr->data;
/* trailing space, and the mode letter itself */
plen = strlen(banptr->banstr) +
(banptr->forward ? strlen(banptr->forward) + 1 : 0) + 2;
if(count >= MAXMODEPARAMS || (cur_len + plen) > BUFSIZE - 4)
{
/* remove trailing space */
*mbuf = '\0';
*(pbuf - 1) = '\0';
sendto_channel_local(mems, chptr, "%s %s", lmodebuf, lparabuf);
cur_len = mlen;
mbuf = lmodebuf + mlen;
pbuf = lparabuf;
count = 0;
}
*mbuf++ = c;
cur_len += plen;
if (banptr->forward)
pbuf += sprintf(pbuf, "%s$%s ", banptr->banstr, banptr->forward);
else
pbuf += sprintf(pbuf, "%s ", banptr->banstr);
count++;
free_ban(banptr);
}
*mbuf = '\0';
*(pbuf - 1) = '\0';
sendto_channel_local(mems, chptr, "%s %s", lmodebuf, lparabuf);
list->head = list->tail = NULL;
list->length = 0;
}
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