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construct/modules/core/m_sjoin.c
jilles 1117fbd3d5 [svn] Merge old trunk r2767: 
Copy channel name from command on lowerTS JOIN/SJOIN,
this makes the capitalization of the channel name
timestamped like modes are.
2007-04-28 16:47:25 -07:00

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/*
* ircd-ratbox: A slightly useful ircd.
* m_sjoin.c: Joins a user to 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
*
* $Id: m_sjoin.c 3434 2007-04-28 23:47:25Z jilles $
*/
#include "stdinc.h"
#include "tools.h"
#include "channel.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "common.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_serv.h"
#include "s_conf.h"
static int ms_sjoin(struct Client *, struct Client *, int, const char **);
struct Message sjoin_msgtab = {
"SJOIN", 0, 0, 0, MFLG_SLOW,
{mg_unreg, mg_ignore, mg_ignore, {ms_sjoin, 0}, mg_ignore, mg_ignore}
};
mapi_clist_av1 sjoin_clist[] = { &sjoin_msgtab, NULL };
DECLARE_MODULE_AV1(sjoin, NULL, NULL, sjoin_clist, NULL, NULL, "$Revision: 3434 $");
/*
* ms_sjoin
* parv[0] - sender
* parv[1] - TS
* parv[2] - channel
* parv[3] - modes + n arguments (key and/or limit)
* parv[4+n] - flags+nick list (all in one parameter)
*
* process a SJOIN, taking the TS's into account to either ignore the
* incoming modes or undo the existing ones or merge them, and JOIN
* all the specified users while sending JOIN/MODEs to local clients
*/
static char modebuf[MODEBUFLEN];
static char parabuf[MODEBUFLEN];
static const char *para[MAXMODEPARAMS];
static char *mbuf;
static int pargs;
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,
dlink_list * list, char c, int cap, int mems);
static int
ms_sjoin(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
static char buf_nick[BUFSIZE];
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;
int keep_our_modes = 1;
int keep_new_modes = 1;
int fl;
int isnew;
int mlen_nick, mlen_uid;
int len_nick;
int len_uid;
int len;
int joins = 0;
const char *s;
char *ptr_nick;
char *ptr_uid;
char *p;
int i, joinc = 0, timeslice = 0;
static char empty[] = "";
dlink_node *ptr, *next_ptr;
if(!IsChannelName(parv[2]) || !check_channel_name(parv[2]))
return 0;
/* SJOIN's for local channels can't happen. */
if(*parv[2] == '&')
return 0;
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 'i':
mode.mode |= MODE_INVITEONLY;
break;
case 'n':
mode.mode |= MODE_NOPRIVMSGS;
break;
case 'p':
mode.mode |= MODE_PRIVATE;
break;
case 's':
mode.mode |= MODE_SECRET;
break;
case 'm':
mode.mode |= MODE_MODERATED;
break;
case 't':
mode.mode |= MODE_TOPICLIMIT;
break;
case 'r':
mode.mode |= MODE_REGONLY;
break;
case 'L':
mode.mode |= MODE_EXLIMIT;
break;
case 'P':
mode.mode |= MODE_PERMANENT;
break;
case 'c':
mode.mode |= MODE_NOCOLOR;
break;
case 'g':
mode.mode |= MODE_FREEINVITE;
break;
case 'z':
mode.mode |= MODE_OPMODERATE;
break;
case 'F':
mode.mode |= MODE_FREETARGET;
break;
case 'Q':
mode.mode |= MODE_DISFORWARD;
break;
case 'f':
strlcpy(mode.forward, parv[4 + args], sizeof(mode.forward));
args++;
if(parc < 5 + args)
return 0;
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 0;
break;
case 'k':
strlcpy(mode.key, parv[4 + args], sizeof(mode.key));
args++;
if(parc < 5 + args)
return 0;
break;
case 'l':
mode.limit = atoi(parv[4 + args]);
args++;
if(parc < 5 + args)
return 0;
break;
}
}
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 0; /* 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.
* Don't kick if the source has sent EOB (services
* deopping everyone by TS-1 SJOIN).
* -- 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 = dlink_list_length(&chptr->members);
int b = dlink_list_length(&chptr->banlist) +
dlink_list_length(&chptr->exceptlist) +
dlink_list_length(&chptr->invexlist) +
dlink_list_length(&chptr->quietlist);
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);
sendto_server(NULL, chptr, NOCAPS, CAP_TS6,
":%s KICK %s %s :Net Rider",
me.name, chptr->chname, who->name);
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 0; /* oops! */
/* If the source does not do TS6,
* nontimestamped bans have been sent to it,
* but we have just lost those here. Let's
* warn the channel about this. Because
* of the kicks, any users on the channel
* will be at client_p. -- jilles */
if (!has_id(source_p) && b > 0)
sendto_one(client_p, ":%s NOTICE %s :*** Notice -- possible ban desync on %s, please remove any bans just added by servers", get_id(&me, client_p), parv[2], parv[2]);
oldmode = &chptr->mode;
}
}
keep_our_modes = NO;
chptr->channelts = newts;
}
else
keep_new_modes = NO;
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);
DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head)
{
del_invite(chptr, ptr->data);
}
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",
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_nick = ircsprintf(buf_nick, ":%s SJOIN %ld %s %s :",
source_p->name, (long) chptr->channelts, parv[2], modes);
ptr_nick = buf_nick + mlen_nick;
/* working on the presumption eventually itll be more efficient to
* build a TS6 buffer without checking its needed..
*/
mlen_uid = ircsprintf(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_nick = 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_nick + len_nick + NICKLEN + 3) > (BUFSIZE - 3))
{
*(ptr_nick - 1) = '\0';
sendto_server(client_p->from, NULL, NOCAPS, CAP_TS6, "%s", buf_nick);
ptr_nick = buf_nick + mlen_nick;
len_nick = 0;
}
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_nick++ = '@';
*ptr_uid++ = '@';
len_nick++;
len_uid++;
}
if(fl & CHFL_VOICE)
{
*ptr_nick++ = '+';
*ptr_uid++ = '+';
len_nick++;
len_uid++;
}
}
/* copy the nick to the two buffers */
len = ircsprintf(ptr_nick, "%s ", target_p->name);
ptr_nick += len;
len_nick += len;
len = ircsprintf(ptr_uid, "%s ", use_id(target_p));
ptr_uid += len;
len_uid += len;
if(!keep_new_modes)
{
if(fl & CHFL_CHANOP)
fl = CHFL_DEOPPED;
else
fl = 0;
}
if(!IsMember(target_p, chptr))
{
add_user_to_channel(chptr, target_p, fl);
sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
target_p->name,
target_p->username, target_p->host, parv[2]);
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 0;
}
/* Keep the colon if we're sending an SJOIN without nicks -- jilles */
if (joins)
{
*(ptr_nick - 1) = '\0';
*(ptr_uid - 1) = '\0';
}
sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid);
sendto_server(client_p->from, NULL, NOCAPS, CAP_TS6, "%s", buf_nick);
/* if the source does TS6 we have to remove our bans. Its now safe
* to issue -b's to the non-ts6 servers, as the sjoin we've just
* sent will kill any ops they have.
*/
if(!keep_our_modes && source_p->id[0] != '\0')
{
if(dlink_list_length(&chptr->banlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->banlist, 'b', NOCAPS, ALL_MEMBERS);
if(dlink_list_length(&chptr->exceptlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->exceptlist,
'e', CAP_EX, ONLY_CHANOPS);
if(dlink_list_length(&chptr->invexlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->invexlist,
'I', CAP_IE, ONLY_CHANOPS);
if(dlink_list_length(&chptr->quietlist) > 0)
remove_ban_list(chptr, fakesource_p, &chptr->quietlist,
'q', NOCAPS, ALL_MEMBERS);
chptr->bants++;
}
return 0;
}
struct mode_letter
{
int mode;
char letter;
};
static struct mode_letter flags[] = {
{MODE_NOPRIVMSGS, 'n'},
{MODE_TOPICLIMIT, 't'},
{MODE_SECRET, 's'},
{MODE_MODERATED, 'm'},
{MODE_INVITEONLY, 'i'},
{MODE_PRIVATE, 'p'},
{MODE_REGONLY, 'r'},
{MODE_EXLIMIT, 'L'},
{MODE_PERMANENT, 'P'},
{MODE_NOCOLOR, 'c'},
{MODE_FREEINVITE, 'g'},
{MODE_OPMODERATE, 'z'},
{MODE_FREETARGET, 'F'},
{MODE_DISFORWARD, 'Q'},
{0, 0}
};
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; flags[i].letter; i++)
{
if((mode->mode & flags[i].mode) && !(oldmode->mode & flags[i].mode))
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = flags[i].letter;
}
}
/* now the ones we need to remove. */
for (i = 0; flags[i].letter; i++)
{
if((oldmode->mode & flags[i].mode) && !(mode->mode & flags[i].mode))
{
if(dir != MODE_DEL)
{
*mbuf++ = '-';
dir = MODE_DEL;
}
*mbuf++ = flags[i].letter;
}
}
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 = ircsprintf(pbuf, "%s ", oldmode->key);
pbuf += len;
pargs++;
}
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 = ircsprintf(pbuf, "%d ", mode->limit);
pbuf += len;
pargs++;
}
if(mode->key[0] && strcmp(oldmode->key, mode->key))
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = 'k';
len = ircsprintf(pbuf, "%s ", mode->key);
pbuf += len;
pargs++;
}
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 = ircsprintf(pbuf, "%d:%d ", mode->join_num, mode->join_time);
pbuf += len;
pargs++;
}
if(mode->forward[0] && strcmp(oldmode->forward, mode->forward) && ConfigChannel.use_forward)
{
if(dir != MODE_ADD)
{
*mbuf++ = '+';
dir = MODE_ADD;
}
*mbuf++ = 'f';
len = ircsprintf(pbuf, "%s ", mode->forward);
pbuf += len;
pargs++;
}
*mbuf = '\0';
}
/*
* remove_our_modes
*
* inputs -
* output -
* side effects -
*/
static void
remove_our_modes(struct Channel *chptr, struct Client *source_p)
{
struct membership *msptr;
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;
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",
me.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",
me.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",
me.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
* and non-TS6 servers.
*/
static void
remove_ban_list(struct Channel *chptr, struct Client *source_p,
dlink_list * list, char c, int cap, int mems)
{
static char lmodebuf[BUFSIZE];
static char lparabuf[BUFSIZE];
struct Ban *banptr;
dlink_node *ptr;
dlink_node *next_ptr;
char *pbuf;
int count = 0;
int cur_len, mlen, plen;
pbuf = lparabuf;
cur_len = mlen = ircsprintf(lmodebuf, ":%s MODE %s -", source_p->name, chptr->chname);
mbuf = lmodebuf + mlen;
DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
{
banptr = ptr->data;
/* trailing space, and the mode letter itself */
plen = strlen(banptr->banstr) + 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);
/* Tricky tricky. If we changed source_p to &me
* in ms_sjoin(), this still won't send stuff
* where it should not be sent, because the
* real source_p does TS6 -- jilles */
sendto_server(source_p, chptr, cap, CAP_TS6, "%s %s", lmodebuf, lparabuf);
cur_len = mlen;
mbuf = lmodebuf + mlen;
pbuf = lparabuf;
count = 0;
}
*mbuf++ = c;
cur_len += plen;
pbuf += ircsprintf(pbuf, "%s ", banptr->banstr);
count++;
free_ban(banptr);
}
*mbuf = '\0';
*(pbuf - 1) = '\0';
sendto_channel_local(mems, chptr, "%s %s", lmodebuf, lparabuf);
sendto_server(source_p, chptr, cap, CAP_TS6, "%s %s", lmodebuf, lparabuf);
list->head = list->tail = NULL;
list->length = 0;
}
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