/*
* rejoin_doparts:
* sends a PART to all channels (to local users only)
*/
void rejoin_doparts(aClient *sptr, char did_parts[])
{
Membership *tmp;
aChannel *chptr;
char *comment = "Rejoining because of user@host change";
int i = 0;
for (tmp = sptr->user->channel; tmp; tmp = tmp->next)
{
chptr = tmp->chptr;
if (!chptr)
continue; /* Possible? */
/* If the user is banned, don't do it */
if (is_banned(sptr, chptr, BANCHK_JOIN))
{
did_parts[i++] = 0;
continue;
}
did_parts[i++] = 1;
if ((chptr->mode.mode & MODE_AUDITORIUM) &&
!(tmp->flags & (CHFL_CHANOWNER|CHFL_CHANPROT|CHFL_CHANOP)))
{
sendto_chanops_butone(sptr, chptr, ":%s!%s@%s PART %s :%s", sptr->name, sptr->user->username, GetHost(sptr), chptr->chname, comment);
} else
sendto_channel_butserv_butone(chptr, sptr, sptr, ":%s PART %s :%s", sptr->name, chptr->chname, comment);
}
}
static int eb_canjoin(const char *data, struct Client *client_p,
struct Channel *chptr, long mode_type)
{
struct Channel *chptr2;
int ret;
static int recurse = 0;
(void)mode_type;
/* don't process a $j in a $j'ed list */
if (recurse)
return EXTBAN_INVALID;
if (data == NULL)
return EXTBAN_INVALID;
chptr2 = find_channel(data);
/* must exist, and no point doing this with the same channel */
if (chptr2 == NULL || chptr2 == chptr)
return EXTBAN_INVALID;
/* require consistent target */
if (chptr->chname[0] == '#' && data[0] == '&')
return EXTBAN_INVALID;
/* this allows getting some information about ban exceptions
* but +s/+p doesn't seem the right criterion */
#if 0
/* privacy! don't allow +s/+p channels to influence another channel */
if (!PubChannel(chptr2))
return EXTBAN_INVALID;
#endif
recurse = 1;
ret = is_banned(chptr2, client_p, NULL, NULL, NULL) == CHFL_BAN ? EXTBAN_MATCH : EXTBAN_NOMATCH;
recurse = 0;
return ret;
}
static int cb_join(aClient *sptr, aChannel *chptr, char *parv[]) {
aModeB *p = NULL;
if (!can_join(sptr, sptr, chptr, NULL, NULL, parv)) /* test for operoverride or invite */
{
return HOOK_CONTINUE;
}
if (chptr->mode.extmode & EXTCMODE_BANLINK) /* mode +B set? */
{
if (is_banned(sptr, chptr, BANCHK_JOIN)) /* user is banned? */
{
p = (aModeB *) extcmode_get_struct(chptr->mode.extmodeparam, 'B');
if (p && p->val)
{
sendto_one(sptr, ":%s 470 %s %s (you are banned) transferring you to %s",
me.name, sptr->name, chptr->chname, p->val);
parv[0] = sptr->name;
parv[1] = p->val;
do_join(sptr, sptr, 2, parv);
return HOOK_DENY;
}
}
}
return HOOK_CONTINUE;
}
DLLFUNC int _can_join(aClient *cptr, aClient *sptr, aChannel *chptr, char *key, char *link, char *parv[])
{
Link *lp;
Ban *banned;
if ((chptr->mode.mode & MODE_ONLYSECURE) && !(sptr->umodes & UMODE_SECURE))
{
if (IsAnOper(sptr))
{
/* Yeah yeah.. duplicate code..
* Anyway: if the channel is +z we still allow an ircop to bypass it
* if they are invited.
*/
for (lp = sptr->user->invited; lp; lp = lp->next)
if (lp->value.chptr == chptr)
return 0;
}
return (ERR_SECUREONLYCHAN);
}
if ((chptr->mode.mode & MODE_OPERONLY) && !IsAnOper(sptr))
return (ERR_OPERONLY);
if ((chptr->mode.mode & MODE_ADMONLY) && !IsSkoAdmin(sptr))
return (ERR_ADMONLY);
/* Admin, Coadmin, Netadmin, and SAdmin can still walk +b in +O */
banned = is_banned(sptr, chptr, BANCHK_JOIN);
if (banned && (chptr->mode.mode & MODE_OPERONLY) &&
IsAnOper(sptr) && !IsSkoAdmin(sptr) && !IsCoAdmin(sptr))
return (ERR_BANNEDFROMCHAN);
/* Only NetAdmin/SAdmin can walk +b in +A */
if (banned && (chptr->mode.mode & MODE_ADMONLY) &&
IsAnOper(sptr) && !IsNetAdmin(sptr) && !IsSAdmin(sptr))
return (ERR_BANNEDFROMCHAN);
for (lp = sptr->user->invited; lp; lp = lp->next)
if (lp->value.chptr == chptr)
return 0;
if ((chptr->mode.limit && chptr->users >= chptr->mode.limit))
{
if (chptr->mode.link)
{
if (*chptr->mode.link != '\0')
{
/* We are linked. */
sendto_one(sptr,
err_str(ERR_LINKCHANNEL), me.name,
sptr->name, chptr->chname,
chptr->mode.link);
parv[0] = sptr->name;
parv[1] = (chptr->mode.link);
do_join(cptr, sptr, 2, parv);
return -1;
}
}
/* We check this later return (ERR_CHANNELISFULL); */
}
if ((chptr->mode.mode & MODE_RGSTRONLY) && !IsLoggedIn(sptr))
return (ERR_NEEDREGGEDNICK);
if (*chptr->mode.key && (BadPtr(key) || strcmp(chptr->mode.key, key)))
return (ERR_BADCHANNELKEY);
if ((chptr->mode.mode & MODE_INVITEONLY) && !find_invex(chptr, sptr))
return (ERR_INVITEONLYCHAN);
if ((chptr->mode.limit && chptr->users >= chptr->mode.limit))
return (ERR_CHANNELISFULL);
if (banned)
return (ERR_BANNEDFROMCHAN);
#ifndef NO_OPEROVERRIDE
#ifdef OPEROVERRIDE_VERIFY
if (IsOper(sptr) && (chptr->mode.mode & MODE_SECRET ||
chptr->mode.mode & MODE_PRIVATE) && !is_autojoin_chan(chptr->chname))
return (ERR_OPERSPVERIFY);
#endif
#endif
#ifdef JOINTHROTTLE
if (!IsAnOper(cptr) &&
(chptr->mode.extmode & EXTMODE_JOINTHROTTLE) && isjthrottled(cptr, chptr))
return ERR_TOOMANYJOINS;
#endif
return 0;
}
/*
** m_nick
** parv[0] = sender prefix
** parv[1] = nickname
** if from new client -taz
** parv[2] = nick password
** if from server:
** parv[2] = hopcount
** parv[3] = timestamp
** parv[4] = username
** parv[5] = hostname
** parv[6] = servername
** if NICK version 1:
** parv[7] = servicestamp
** parv[8] = info
** if NICK version 2:
** parv[7] = servicestamp
** parv[8] = umodes
** parv[9] = virthost, * if none
** parv[10] = info
** if NICKIP:
** parv[10] = ip
** parv[11] = info
*/
DLLFUNC CMD_FUNC(m_nick)
{
aTKline *tklban;
int ishold;
aClient *acptr, *serv = NULL;
aClient *acptrs;
char nick[NICKLEN + 2], *s;
Membership *mp;
time_t lastnick = (time_t) 0;
int differ = 1, update_watch = 1;
unsigned char newusr = 0, removemoder = 1;
/*
* If the user didn't specify a nickname, complain
*/
if (parc < 2)
{
sendto_one(sptr, err_str(ERR_NONICKNAMEGIVEN),
me.name, parv[0]);
return 0;
}
strncpyzt(nick, parv[1], NICKLEN + 1);
if (MyConnect(sptr) && sptr->user && !IsAnOper(sptr))
{
if ((sptr->user->flood.nick_c >= NICK_COUNT) &&
(TStime() - sptr->user->flood.nick_t < NICK_PERIOD))
{
/* Throttle... */
sendto_one(sptr, err_str(ERR_NCHANGETOOFAST), me.name, sptr->name, nick,
(int)(NICK_PERIOD - (TStime() - sptr->user->flood.nick_t)));
return 0;
}
}
/* For a local clients, do proper nickname checking via do_nick_name()
* and reject the nick if it returns false.
* For remote clients, do a quick check by using do_remote_nick_name(),
* if this returned false then reject and kill it. -- Syzop
*/
if ((IsServer(cptr) && !do_remote_nick_name(nick)) ||
(!IsServer(cptr) && !do_nick_name(nick)))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME),
me.name, parv[0], parv[1], "Illegal characters");
if (IsServer(cptr))
{
ircstp->is_kill++;
sendto_failops("Bad Nick: %s From: %s %s",
parv[1], parv[0], get_client_name(cptr, FALSE));
sendto_one(cptr, ":%s KILL %s :%s (%s <- %s[%s])",
me.name, parv[1], me.name, parv[1],
nick, cptr->name);
if (sptr != cptr)
{ /* bad nick change */
sendto_serv_butone(cptr,
":%s KILL %s :%s (%s <- %s!%s@%s)",
me.name, parv[0], me.name,
get_client_name(cptr, FALSE),
parv[0],
sptr->user ? sptr->username : "",
sptr->user ? sptr->user->server :
cptr->name);
sptr->flags |= FLAGS_KILLED;
return exit_client(cptr, sptr, &me, "BadNick");
}
}
return 0;
}
/* Kill quarantined opers early... */
if (IsServer(cptr) && (sptr->from->flags & FLAGS_QUARANTINE) &&
(parc >= 11) && strchr(parv[8], 'o'))
{
ircstp->is_kill++;
/* Send kill to uplink only, hasn't been broadcasted to the rest, anyway */
sendto_one(cptr, ":%s KILL %s :%s (Quarantined: no global oper privileges allowed)",
me.name, parv[1], me.name);
sendto_realops("QUARANTINE: Oper %s on server %s killed, due to quarantine",
parv[1], sptr->name);
/* (nothing to exit_client or to free, since user was never added) */
return 0;
}
/*
** Protocol 4 doesn't send the server as prefix, so it is possible
** the server doesn't exist (a lagged net.burst), in which case
** we simply need to ignore the NICK. Also when we got that server
** name (again) but from another direction. --Run
*/
/*
** We should really only deal with this for msgs from servers.
** -- Aeto
*/
if (IsServer(cptr) &&
(parc > 7
&& (!(serv = (aClient *)find_server_b64_or_real(parv[6]))
|| serv->from != cptr->from)))
{
sendto_realops("Cannot find server %s (%s)", parv[6],
backupbuf);
return 0;
}
/*
** Check against nick name collisions.
**
** Put this 'if' here so that the nesting goes nicely on the screen :)
** We check against server name list before determining if the nickname
** is present in the nicklist (due to the way the below for loop is
** constructed). -avalon
*/
/* I managed to f**k this up i guess --stskeeps */
if ((acptr = find_server(nick, NULL)))
{
if (MyConnect(sptr))
{
#ifdef GUEST
if (IsUnknown(sptr))
{
RunHook4(HOOKTYPE_GUEST, cptr, sptr, parc, parv);
return 0;
}
#endif
sendto_one(sptr, err_str(ERR_NICKNAMEINUSE), me.name,
BadPtr(parv[0]) ? "*" : parv[0], nick);
return 0; /* NICK message ignored */
}
}
/*
** Check for a Q-lined nickname. If we find it, and it's our
** client, just reject it. -Lefler
** Allow opers to use Q-lined nicknames. -Russell
*/
if (!stricmp("ircd", nick))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME), me.name,
BadPtr(parv[0]) ? "*" : parv[0], nick,
"Reserved for internal IRCd purposes");
return 0;
}
if (!stricmp("irc", nick))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME), me.name,
BadPtr(parv[0]) ? "*" : parv[0], nick,
"Reserved for internal IRCd purposes");
return 0;
}
if (MyClient(sptr)) /* local client changin nick afterwards.. */
{
int xx;
spamfilter_build_user_string(spamfilter_user, nick, sptr);
xx = dospamfilter(sptr, spamfilter_user, SPAMF_USER, NULL, 0, NULL);
if (xx < 0)
return xx;
}
if (!IsULine(sptr) && (tklban = find_qline(sptr, nick, &ishold)))
{
if (IsServer(sptr) && !ishold) /* server introducing new client */
{
acptrs =
(aClient *)find_server_b64_or_real(sptr->user ==
NULL ? (char *)parv[6] : (char *)sptr->user->
server);
/* (NEW: no unregistered q:line msgs anymore during linking) */
if (!acptrs || (acptrs->serv && acptrs->serv->flags.synced))
sendto_snomask(SNO_QLINE, "Q:lined nick %s from %s on %s", nick,
(*sptr->name != 0
&& !IsServer(sptr) ? sptr->name : "<unregistered>"),
acptrs ? acptrs->name : "unknown server");
}
if (IsServer(cptr) && IsPerson(sptr) && !ishold) /* remote user changing nick */
{
sendto_snomask(SNO_QLINE, "Q:lined nick %s from %s on %s", nick,
sptr->name, sptr->srvptr ? sptr->srvptr->name : "<unknown>");
}
if (!IsServer(cptr)) /* local */
{
if (ishold)
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME),
me.name, BadPtr(parv[0]) ? "*" : parv[0],
nick, tklban->reason);
return 0;
}
if (!IsOper(cptr))
{
sptr->since += 4; /* lag them up */
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME),
me.name, BadPtr(parv[0]) ? "*" : parv[0],
nick, tklban->reason);
sendto_snomask(SNO_QLINE, "Forbidding Q-lined nick %s from %s.",
nick, get_client_name(cptr, FALSE));
return 0; /* NICK message ignored */
}
}
}
/*
** acptr already has result from previous find_server()
*/
if (acptr)
{
/*
** We have a nickname trying to use the same name as
** a server. Send out a nick collision KILL to remove
** the nickname. As long as only a KILL is sent out,
** there is no danger of the server being disconnected.
** Ultimate way to jupiter a nick ? >;-). -avalon
*/
sendto_failops("Nick collision on %s(%s <- %s)",
sptr->name, acptr->from->name,
get_client_name(cptr, FALSE));
ircstp->is_kill++;
sendto_one(cptr, ":%s KILL %s :%s (%s <- %s)",
me.name, sptr->name, me.name, acptr->from->name,
/* NOTE: Cannot use get_client_name
** twice here, it returns static
** string pointer--the other info
** would be lost
*/
get_client_name(cptr, FALSE));
sptr->flags |= FLAGS_KILLED;
return exit_client(cptr, sptr, &me, "Nick/Server collision");
}
if (MyClient(cptr) && !IsOper(cptr))
cptr->since += 3; /* Nick-flood prot. -Donwulff */
if (!(acptr = find_client(nick, NULL)))
goto nickkilldone; /* No collisions, all clear... */
/*
** If the older one is "non-person", the new entry is just
** allowed to overwrite it. Just silently drop non-person,
** and proceed with the nick. This should take care of the
** "dormant nick" way of generating collisions...
*/
/* Moved before Lost User Field to fix some bugs... -- Barubary */
if (IsUnknown(acptr) && MyConnect(acptr))
{
/* This may help - copying code below */
if (acptr == cptr)
return 0;
acptr->flags |= FLAGS_KILLED;
exit_client(NULL, acptr, &me, "Overridden");
goto nickkilldone;
}
/* A sanity check in the user field... */
if (acptr->user == NULL)
{
/* This is a Bad Thing */
sendto_failops("Lost user field for %s in change from %s",
acptr->name, get_client_name(cptr, FALSE));
ircstp->is_kill++;
sendto_one(acptr, ":%s KILL %s :%s (Lost user field!)",
me.name, acptr->name, me.name);
acptr->flags |= FLAGS_KILLED;
/* Here's the previous versions' desynch. If the old one is
messed up, trash the old one and accept the new one.
Remember - at this point there is a new nick coming in!
Handle appropriately. -- Barubary */
exit_client(NULL, acptr, &me, "Lost user field");
goto nickkilldone;
}
/*
** If acptr == sptr, then we have a client doing a nick
** change between *equivalent* nicknames as far as server
** is concerned (user is changing the case of his/her
** nickname or somesuch)
*/
if (acptr == sptr) {
if (strcmp(acptr->name, nick) != 0)
{
/* Allows change of case in his/her nick */
removemoder = 0; /* don't set the user -r */
goto nickkilldone; /* -- go and process change */
} else
/*
** This is just ':old NICK old' type thing.
** Just forget the whole thing here. There is
** no point forwarding it to anywhere,
** especially since servers prior to this
** version would treat it as nick collision.
*/
return 0; /* NICK Message ignored */
}
/*
** Note: From this point forward it can be assumed that
** acptr != sptr (point to different client structures).
*/
/*
** Decide, we really have a nick collision and deal with it
*/
if (!IsServer(cptr))
{
/*
** NICK is coming from local client connection. Just
** send error reply and ignore the command.
*/
#ifdef GUEST
if (IsUnknown(sptr))
{
RunHook4(HOOKTYPE_GUEST, cptr, sptr, parc, parv);
return 0;
}
#endif
sendto_one(sptr, err_str(ERR_NICKNAMEINUSE),
/* parv[0] is empty when connecting */
me.name, BadPtr(parv[0]) ? "*" : parv[0], nick);
return 0; /* NICK message ignored */
}
/*
** NICK was coming from a server connection.
** This means we have a race condition (two users signing on
** at the same time), or two net fragments reconnecting with
** the same nick.
** The latter can happen because two different users connected
** or because one and the same user switched server during a
** net break.
** If we have the old protocol (no TimeStamp and no user@host)
** or if the TimeStamps are equal, we kill both (or only 'new'
** if it was a "NICK new"). Otherwise we kill the youngest
** when user@host differ, or the oldest when they are the same.
** --Run
**
*/
if (IsServer(sptr))
{
/*
** A new NICK being introduced by a neighbouring
** server (e.g. message type "NICK new" received)
*/
if (parc > 3)
{
lastnick = TS2ts(parv[3]);
if (parc > 5)
differ = (mycmp(acptr->user->username, parv[4])
|| mycmp(acptr->user->realhost, parv[5]));
}
sendto_failops("Nick collision on %s (%s %ld <- %s %ld)",
acptr->name, acptr->from->name, acptr->lastnick,
cptr->name, lastnick);
/*
** I'm putting the KILL handling here just to make it easier
** to read, it's hard to follow it the way it used to be.
** Basically, this is what it will do. It will kill both
** users if no timestamp is given, or they are equal. It will
** kill the user on our side if the other server is "correct"
** (user@host differ and their user is older, or user@host are
** the same and their user is younger), otherwise just kill the
** user an reintroduce our correct user.
** The old code just sat there and "hoped" the other server
** would kill their user. Not anymore.
** -- binary
*/
if (!(parc > 3) || (acptr->lastnick == lastnick))
{
ircstp->is_kill++;
sendto_serv_butone(NULL,
":%s KILL %s :%s (Nick Collision)",
me.name, acptr->name, me.name);
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, acptr, &me,
"Nick collision with no timestamp/equal timestamps");
return 0; /* We killed both users, now stop the process. */
}
if ((differ && (acptr->lastnick > lastnick)) ||
(!differ && (acptr->lastnick < lastnick)) || acptr->from == cptr) /* we missed a QUIT somewhere ? */
{
ircstp->is_kill++;
sendto_serv_butone(cptr,
":%s KILL %s :%s (Nick Collision)",
me.name, acptr->name, me.name);
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, acptr, &me, "Nick collision");
goto nickkilldone; /* OK, we got rid of the "wrong" user,
** now we're going to add the user the
** other server introduced.
*/
}
if ((differ && (acptr->lastnick < lastnick)) ||
(!differ && (acptr->lastnick > lastnick)))
{
/*
* Introduce our "correct" user to the other server
*/
sendto_one(cptr, ":%s KILL %s :%s (Nick Collision)",
me.name, parv[1], me.name);
send_umode(NULL, acptr, 0, SEND_UMODES, buf);
sendto_one_nickcmd(cptr, acptr, buf);
if (acptr->user->away)
sendto_one(cptr, ":%s AWAY :%s", acptr->name,
acptr->user->away);
send_user_joins(cptr, acptr);
return 0; /* Ignore the NICK */
}
return 0;
}
else
{
/*
** A NICK change has collided (e.g. message type ":old NICK new").
*/
if (parc > 2)
lastnick = TS2ts(parv[2]);
differ = (mycmp(acptr->user->username, sptr->user->username) ||
mycmp(acptr->user->realhost, sptr->user->realhost));
sendto_failops
("Nick change collision from %s to %s (%s %ld <- %s %ld)",
sptr->name, acptr->name, acptr->from->name, acptr->lastnick,
sptr->from->name, lastnick);
if (!(parc > 2) || lastnick == acptr->lastnick)
{
ircstp->is_kill += 2;
sendto_serv_butone(NULL, /* First kill the new nick. */
":%s KILL %s :%s (Self Collision)",
me.name, acptr->name, me.name);
sendto_serv_butone(cptr, /* Tell my servers to kill the old */
":%s KILL %s :%s (Self Collision)",
me.name, sptr->name, me.name);
sptr->flags |= FLAGS_KILLED;
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, sptr, &me, "Self Collision");
(void)exit_client(NULL, acptr, &me, "Self Collision");
return 0; /* Now that I killed them both, ignore the NICK */
}
if ((differ && (acptr->lastnick > lastnick)) ||
(!differ && (acptr->lastnick < lastnick)))
{
/* sptr (their user) won, let's kill acptr (our user) */
ircstp->is_kill++;
sendto_serv_butone(cptr,
":%s KILL %s :%s (Nick collision: %s <- %s)",
me.name, acptr->name, me.name,
acptr->from->name, sptr->from->name);
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, acptr, &me, "Nick collision");
goto nickkilldone; /* their user won, introduce new nick */
}
if ((differ && (acptr->lastnick < lastnick)) ||
(!differ && (acptr->lastnick > lastnick)))
{
/* acptr (our user) won, let's kill sptr (their user),
** and reintroduce our "correct" user
*/
ircstp->is_kill++;
/* Kill the user trying to change their nick. */
sendto_serv_butone(cptr,
":%s KILL %s :%s (Nick collision: %s <- %s)",
me.name, sptr->name, me.name,
sptr->from->name, acptr->from->name);
sptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, sptr, &me, "Nick collision");
/*
* Introduce our "correct" user to the other server
*/
/* Kill their user. */
sendto_one(cptr, ":%s KILL %s :%s (Nick Collision)",
me.name, parv[1], me.name);
send_umode(NULL, acptr, 0, SEND_UMODES, buf);
sendto_one_nickcmd(cptr, acptr, buf);
if (acptr->user->away)
sendto_one(cptr, ":%s AWAY :%s", acptr->name,
acptr->user->away);
send_user_joins(cptr, acptr);
return 0; /* their user lost, ignore the NICK */
}
}
return 0; /* just in case */
nickkilldone:
if (IsServer(sptr))
{
/* A server introducing a new client, change source */
sptr = make_client(cptr, serv);
add_client_to_list(sptr);
if (parc > 2)
sptr->hopcount = TS2ts(parv[2]);
if (parc > 3)
sptr->lastnick = TS2ts(parv[3]);
else /* Little bit better, as long as not all upgraded */
sptr->lastnick = TStime();
if (sptr->lastnick < 0)
{
sendto_realops
("Negative timestamp recieved from %s, resetting to TStime (%s)",
cptr->name, backupbuf);
sptr->lastnick = TStime();
}
newusr = 1;
}
else if (sptr->name[0] && IsPerson(sptr))
{
/*
** If the client belongs to me, then check to see
** if client is currently on any channels where it
** is currently banned. If so, do not allow the nick
** change to occur.
** Also set 'lastnick' to current time, if changed.
*/
if (MyClient(sptr))
{
for (mp = sptr->user->channel; mp; mp = mp->next)
{
if (!is_skochanop(sptr, mp->chptr) && is_banned(sptr, mp->chptr, BANCHK_NICK))
{
sendto_one(sptr,
err_str(ERR_BANNICKCHANGE),
me.name, parv[0],
mp->chptr->chname);
return 0;
}
if (CHECK_TARGET_NICK_BANS && !is_skochanop(sptr, mp->chptr) && is_banned_with_nick(sptr, mp->chptr, BANCHK_NICK, nick))
{
sendto_one(sptr,
":%s 437 %s %s :Cannot change to a nickname banned on channel",
me.name, parv[0],
mp->chptr->chname);
return 0;
}
if (!IsOper(sptr) && !IsULine(sptr)
&& mp->chptr->mode.mode & MODE_NONICKCHANGE
&& !is_chanownprotop(sptr, mp->chptr))
{
sendto_one(sptr,
err_str(ERR_NONICKCHANGE),
me.name, parv[0],
mp->chptr->chname);
return 0;
}
}
if (TStime() - sptr->user->flood.nick_t >= NICK_PERIOD)
{
sptr->user->flood.nick_t = TStime();
sptr->user->flood.nick_c = 1;
} else
sptr->user->flood.nick_c++;
sendto_snomask(SNO_NICKCHANGE, "*** Notice -- %s (%s@%s) has changed his/her nickname to %s",
sptr->name, sptr->user->username, sptr->user->realhost, nick);
RunHook2(HOOKTYPE_LOCAL_NICKCHANGE, sptr, nick);
} else {
if (!IsULine(sptr))
sendto_snomask(SNO_FNICKCHANGE, "*** Notice -- %s (%s@%s) has changed his/her nickname to %s",
sptr->name, sptr->user->username, sptr->user->realhost, nick);
RunHook3(HOOKTYPE_REMOTE_NICKCHANGE, cptr, sptr, nick);
}
/*
* Client just changing his/her nick. If he/she is
* on a channel, send note of change to all clients
* on that channel. Propagate notice to other servers.
*/
if (mycmp(parv[0], nick) ||
/* Next line can be removed when all upgraded --Run */
(!MyClient(sptr) && parc > 2
&& TS2ts(parv[2]) < sptr->lastnick))
sptr->lastnick = (MyClient(sptr)
|| parc < 3) ? TStime() : TS2ts(parv[2]);
if (sptr->lastnick < 0)
{
sendto_realops("Negative timestamp (%s)", backupbuf);
sptr->lastnick = TStime();
}
add_history(sptr, 1);
sendto_common_channels(sptr, ":%s NICK :%s", parv[0], nick);
sendto_serv_butone_token(cptr, parv[0], MSG_NICK, TOK_NICK,
"%s %ld", nick, sptr->lastnick);
if (removemoder)
sptr->umodes &= ~UMODE_REGNICK;
}
else if (!sptr->name[0])
{
#ifdef NOSPOOF
/*
* Client setting NICK the first time.
*
* Generate a random string for them to pong with.
*/
sptr->nospoof = getrandom32();
if (PINGPONG_WARNING)
sendto_one(sptr, ":%s NOTICE %s :*** If you are having problems"
" connecting due to ping timeouts, please"
" type /quote pong %X or /raw pong %X now.",
me.name, nick, sptr->nospoof, sptr->nospoof);
sendto_one(sptr, "PING :%X", sptr->nospoof);
#endif /* NOSPOOF */
#ifdef CONTACT_EMAIL
sendto_one(sptr,
":%s NOTICE %s :*** If you need assistance with a"
" connection problem, please email " CONTACT_EMAIL
" with the name and version of the client you are"
" using, and the server you tried to connect to: %s",
me.name, nick, me.name);
#endif /* CONTACT_EMAIL */
#ifdef CONTACT_URL
sendto_one(sptr,
":%s NOTICE %s :*** If you need assistance with"
" connecting to this server, %s, please refer to: "
CONTACT_URL, me.name, nick, me.name);
#endif /* CONTACT_URL */
/* Copy password to the passwd field if it's given after NICK
* - originally by taz, modified by Wizzu
*/
if ((parc > 2) && (strlen(parv[2]) <= PASSWDLEN)
&& !(sptr->listener->umodes & LISTENER_JAVACLIENT))
{
if (sptr->passwd)
MyFree(sptr->passwd);
sptr->passwd = MyMalloc(strlen(parv[2]) + 1);
(void)strcpy(sptr->passwd, parv[2]);
}
/* This had to be copied here to avoid problems.. */
(void)strcpy(sptr->name, nick);
if (sptr->user && IsNotSpoof(sptr))
{
/*
** USER already received, now we have NICK.
** *NOTE* For servers "NICK" *must* precede the
** user message (giving USER before NICK is possible
** only for local client connection!). register_user
** may reject the client and call exit_client for it
** --must test this and exit m_nick too!!!
*/
#ifndef NOSPOOF
if (USE_BAN_VERSION && MyConnect(sptr))
sendto_one(sptr, ":IRC!IRC@%s PRIVMSG %s :\1VERSION\1",
me.name, nick);
#endif
sptr->lastnick = TStime(); /* Always local client */
if (register_user(cptr, sptr, nick,
sptr->user->username, NULL, NULL, NULL) == FLUSH_BUFFER)
return FLUSH_BUFFER;
strcpy(nick, sptr->name); /* don't ask, but I need this. do not remove! -- Syzop */
update_watch = 0;
newusr = 1;
}
}
/*
* Finally set new nick name.
*/
if (update_watch && sptr->name[0])
{
(void)del_from_client_hash_table(sptr->name, sptr);
if (IsPerson(sptr))
hash_check_watch(sptr, RPL_LOGOFF);
}
(void)strcpy(sptr->name, nick);
(void)add_to_client_hash_table(nick, sptr);
if (IsServer(cptr) && parc > 7)
{
parv[3] = nick;
do_cmd(cptr, sptr, "USER", parc - 3, &parv[3]);
if (GotNetInfo(cptr) && !IsULine(sptr))
sendto_fconnectnotice(sptr->name, sptr->user, sptr, 0, NULL);
}
else if (IsPerson(sptr) && update_watch)
hash_check_watch(sptr, RPL_LOGON);
#ifdef NEWCHFLOODPROT
if (sptr->user && !newusr && !IsULine(sptr))
{
for (mp = sptr->user->channel; mp; mp = mp->next)
{
aChannel *chptr = mp->chptr;
if (chptr && !(mp->flags & (CHFL_CHANOP|CHFL_VOICE|CHFL_CHANOWNER|CHFL_HALFOP|CHFL_CHANPROT)) &&
chptr->mode.floodprot && do_chanflood(chptr->mode.floodprot, FLD_NICK) && MyClient(sptr))
{
do_chanflood_action(chptr, FLD_NICK, "nick");
}
}
}
#endif
if (newusr && !MyClient(sptr) && IsPerson(sptr))
{
RunHook(HOOKTYPE_REMOTE_CONNECT, sptr);
}
return 0;
}
/*
** m_part
** parv[0] = sender prefix
** parv[1] = channel
** parv[2] = comment (added by Lefler)
*/
DLLFUNC CMD_FUNC(m_part)
{
aChannel *chptr;
Membership *lp;
char *p = NULL, *name;
char *commentx = (parc > 2 && parv[2]) ? parv[2] : NULL;
char *comment;
int n;
if (parc < 2 || parv[1][0] == '\0')
{
sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS),
me.name, parv[0], "PART");
return 0;
}
if (MyClient(sptr))
{
if (IsShunned(sptr))
commentx = NULL;
if (STATIC_PART)
{
if (!strcasecmp(STATIC_PART, "yes") || !strcmp(STATIC_PART, "1"))
commentx = NULL;
else if (!strcasecmp(STATIC_PART, "no") || !strcmp(STATIC_PART, "0"))
; /* keep original reason */
else
commentx = STATIC_PART;
}
if (commentx)
{
n = dospamfilter(sptr, commentx, SPAMF_PART, parv[1], 0, NULL);
if (n == FLUSH_BUFFER)
return n;
if (n < 0)
commentx = NULL;
}
}
for (; (name = strtoken(&p, parv[1], ",")); parv[1] = NULL)
{
chptr = get_channel(sptr, name, 0);
if (!chptr)
{
sendto_one(sptr, err_str(ERR_NOSUCHCHANNEL),
me.name, parv[0], name);
continue;
}
if (check_channelmask(sptr, cptr, name))
continue;
/* 'commentx' is the general part msg, but it can be changed
* per-channel (eg some chans block badwords, strip colors, etc)
* so we copy it to 'comment' and use that in this for loop :)
*/
comment = commentx;
if (!(lp = find_membership_link(sptr->user->channel, chptr)))
{
/* Normal to get get when our client did a kick
** for a remote client (who sends back a PART),
** so check for remote client or not --Run
*/
if (MyClient(sptr))
sendto_one(sptr,
err_str(ERR_NOTONCHANNEL), me.name,
parv[0], name);
continue;
}
if (!IsAnOper(sptr) && !is_chanownprotop(sptr, chptr)) {
#ifdef STRIPBADWORDS
int blocked = 0;
#endif
/* Banned? No comment allowed ;) */
if (comment && is_banned(sptr, chptr, BANCHK_MSG))
comment = NULL;
/* And other things... */
if ((chptr->mode.mode & MODE_NOCOLOR) && comment) {
if (strchr((char *)comment, 3) || strchr((char *)comment, 27)) {
comment = NULL;
}
}
if ((chptr->mode.mode & MODE_MODERATED) && comment &&
!has_voice(sptr, chptr) && !is_halfop(sptr, chptr))
{
comment = NULL;
}
if ((chptr->mode.mode & MODE_STRIP) && comment) {
comment = (char *)StripColors(comment);
}
#ifdef STRIPBADWORDS
#ifdef STRIPBADWORDS_CHAN_ALWAYS
if (comment)
{
comment = (char *)stripbadwords_channel(comment, &blocked);
}
#else
if ((chptr->mode.extmode & EXTMODE_STRIPBADWORDS) && comment) {
comment = (char *)stripbadwords_channel(comment, &blocked);
}
#endif
#endif
}
/* +M and not logged in to services? */
if ((chptr->mode.mode & MODE_MODREG) && !IsLoggedIn(sptr) && !IsAnOper(sptr))
comment = NULL;
if (MyConnect(sptr))
{
Hook *tmphook;
for (tmphook = Hooks[HOOKTYPE_PRE_LOCAL_PART]; tmphook; tmphook = tmphook->next) {
comment = (*(tmphook->func.pcharfunc))(sptr, chptr, comment);
if (!comment)
break;
}
}
/* Send to other servers... */
if (!comment)
sendto_serv_butone_token(cptr, parv[0],
MSG_PART, TOK_PART, "%s", chptr->chname);
else
sendto_serv_butone_token(cptr, parv[0],
MSG_PART, TOK_PART, "%s :%s", chptr->chname,
comment);
if (1)
{
if ((chptr->mode.mode & MODE_AUDITORIUM) && !is_chanownprotop(sptr, chptr))
{
if (!comment)
{
sendto_chanops_butone(NULL,
chptr, ":%s!%s@%s PART %s",
sptr->name, sptr->user->username, GetHost(sptr),
chptr->chname);
if (!is_chan_op(sptr, chptr) && MyClient(sptr))
sendto_one(sptr, ":%s!%s@%s PART %s",
sptr->name, sptr->user->username, GetHost(sptr), chptr->chname);
}
else
{
sendto_chanops_butone(NULL,
chptr,
":%s!%s@%s PART %s %s",
sptr->name,
sptr->user->username,
GetHost(sptr),
chptr->chname, comment);
if (!is_chan_op(cptr, chptr) && MyClient(sptr))
sendto_one(sptr,
":%s!%s@%s PART %s %s",
sptr->name, sptr->user->username, GetHost(sptr),
chptr->chname, comment);
}
}
else
{
if (!comment)
sendto_channel_butserv(chptr,
sptr, PARTFMT, parv[0],
chptr->chname);
else
sendto_channel_butserv(chptr,
sptr, PARTFMT2, parv[0],
chptr->chname, comment);
}
if (MyClient(sptr))
RunHook4(HOOKTYPE_LOCAL_PART, cptr, sptr, chptr, comment);
else
RunHook4(HOOKTYPE_REMOTE_PART, cptr, sptr, chptr, comment);
remove_user_from_channel(sptr, chptr);
}
}
return 0;
}
/* m_knock
* parv[1] = channel
*
* The KNOCK command has the following syntax:
* :<sender> KNOCK <channel>
*
* If a user is not banned from the channel they can use the KNOCK
* command to have the server NOTICE the channel operators notifying
* they would like to join. Helpful if the channel is invite-only, the
* key is forgotten, or the channel is full (INVITE can bypass each one
* of these conditions. Concept by Dianora <*****@*****.**> and written by
* <anonymous>
*/
static int
m_knock(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct Channel *chptr;
char *p, *name;
if(MyClient(source_p) && ConfigChannel.use_knock == 0) {
sendto_one(source_p, form_str(ERR_KNOCKDISABLED),
me.name, source_p->name);
return 0;
}
name = LOCAL_COPY(parv[1]);
/* dont allow one knock to multiple chans */
if((p = strchr(name, ',')))
*p = '\0';
if(!IsChannelName(name)) {
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
form_str(ERR_NOSUCHCHANNEL), name);
return 0;
}
if((chptr = find_channel(name)) == NULL) {
sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
form_str(ERR_NOSUCHCHANNEL), name);
return 0;
}
if(IsMember(source_p, chptr)) {
if(MyClient(source_p))
sendto_one(source_p, form_str(ERR_KNOCKONCHAN),
me.name, source_p->name, name);
return 0;
}
if(!((chptr->mode.mode & MODE_INVITEONLY) || (*chptr->mode.key) ||
(chptr->mode.limit &&
rb_dlink_list_length(&chptr->members) >= (unsigned long)chptr->mode.limit))) {
sendto_one_numeric(source_p, ERR_CHANOPEN,
form_str(ERR_CHANOPEN), name);
return 0;
}
/* cant knock to a +p channel */
if(HiddenChannel(chptr)) {
sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN,
form_str(ERR_CANNOTSENDTOCHAN), name, "channel does not accept knocks");
return 0;
}
if(MyClient(source_p)) {
/* don't allow a knock if the user is banned */
if(is_banned(chptr, source_p, NULL, NULL, NULL) == CHFL_BAN ||
is_quieted(chptr, source_p, NULL, NULL, NULL) == CHFL_BAN) {
sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN,
form_str(ERR_CANNOTSENDTOCHAN), name, "you are banned from this channel");
return 0;
}
/* local flood protection:
* allow one knock per user per knock_delay
* allow one knock per channel per knock_delay_channel
*/
if(!IsOper(source_p) &&
(source_p->localClient->last_knock + ConfigChannel.knock_delay) > rb_current_time()) {
sendto_one(source_p, form_str(ERR_TOOMANYKNOCK),
me.name, source_p->name, name, "user");
return 0;
} else if((chptr->last_knock + ConfigChannel.knock_delay_channel) > rb_current_time()) {
sendto_one(source_p, form_str(ERR_TOOMANYKNOCK),
me.name, source_p->name, name, "channel");
return 0;
}
/* ok, we actually can send the knock, tell client */
source_p->localClient->last_knock = rb_current_time();
sendto_one(source_p, form_str(RPL_KNOCKDLVR),
me.name, source_p->name, name);
}
chptr->last_knock = rb_current_time();
if(ConfigChannel.use_knock)
sendto_channel_local(chptr->mode.mode & MODE_FREEINVITE ? ALL_MEMBERS : ONLY_CHANOPS,
chptr, form_str(RPL_KNOCK),
me.name, name, name, source_p->name,
source_p->username, source_p->host);
sendto_server(client_p, chptr, CAP_KNOCK|CAP_TS6, NOCAPS,
":%s KNOCK %s", use_id(source_p), name);
sendto_server(client_p, chptr, CAP_KNOCK, CAP_TS6,
":%s KNOCK %s", source_p->name, name);
return 0;
}
/*
* ms_svshost - SVSHOST command handler
* parv[0] = sender prefix
* parv[1] = remote server
* parv[2] = client nick
* parv[3] = vhost to spoof
*/
static void ms_svshost(struct Client* client_p, struct Client* source_p,
int parc, char* parv[])
{
char *flag;
struct Client *victim;
struct Channel *chptr, *top_chptr, *banchans[100];
static char comment[] = "Spoofing with vhost...";
static char urbanned[] = "You are banned";
char modebuf[MODEBUFLEN], parabuf[MODEBUFLEN];
int hide_or_not;
dlink_node *ptr;
int i, num = 0;
if (ServerInfo.gateway && get_bridge_token(client_p))
return;
if (hunt_server(client_p, source_p, ":%s SVSHOST %s %s :%s",
1, parc, parv) != HUNTED_ISME)
return;
if (!find_z_conf(parv[0]))
return;
victim = find_client(parv[2]);
if (victim && !IsServer(victim) && MyConnect(victim))
{
extern int introduce_client(struct Client *, struct Client *,
struct User *, char *);
sendto_server(NULL, victim, NULL, NOCAPS, NOCAPS,
NOFLAGS, ":%s QUIT :%s", victim->name, comment);
/* sendto_common_channels_local(victim, ":%s!%s@%s QUIT :%s",
victim->name, victim->username, victim->host, comment);*/
/* ++current_serial; not needed i suppose */
if (victim->user->channel.head)
for (ptr = victim->user->channel.head; ptr; ptr = ptr->next) {
chptr = (struct Channel *)ptr->data;
sendto_channel_local_butone(victim, ALL_MEMBERS,
chptr, ":%s!%s@%s QUIT :%s",
victim->name, victim->username,
victim->host, comment);
}
strncpy(victim->host, parv[3], HOSTLEN)[HOSTLEN] = 0;
sendto_one(victim, ":%s NOTICE %s :*** Notice -- Spoofing your host as %s",
me.name, victim->name, victim->host);
if (victim->user->channel.head)
for (ptr = victim->user->channel.head; ptr; ptr = ptr->next) {
chptr = (struct Channel *)ptr->data;
#ifdef VCHANS
top_chptr = RootChan(chptr);
#else
top_chptr = chptr;
#endif
if (is_banned(chptr, victim) & (CHFL_BAN|CHFL_DENY)) {
sendto_one(victim, ":%s KICK %s %s :%s",
me.name, top_chptr->chname, victim->name,
urbanned);
/*remove_user_from_channel(chptr, victim);*/
banchans[num++] = chptr;
continue;
}
if (is_chan_op(chptr, victim))
flag = "+o";
#ifdef HALFOPS
else if (is_half_op(chptr, victim))
flag = "+h";
#endif
else if (is_voiced(chptr, victim))
flag = "+v";
else flag = "";
#ifdef REQUIRE_OANDV
if (find_user_link(&chptr->chanops_voiced, victim))
flag = "+ov";
#endif
sendto_channel_local_butone(victim, ALL_MEMBERS,
chptr, ":%s!%s@%s JOIN :%s",
victim->name, victim->username,
victim->host, top_chptr->chname);
#ifdef ANONOPS
if (chptr->mode.mode & MODE_HIDEOPS)
hide_or_not = ONLY_CHANOPS_HALFOPS;
else
#endif
hide_or_not = ALL_MEMBERS;
if (flag[0])
sendto_channel_local_butone(victim, hide_or_not,
chptr, ":%s MODE %s %s %s %s",
me.name, top_chptr->chname, flag,
victim->name, flag[2]? victim->name : "");
}
for (i=0; i < num; i++)
remove_user_from_channel(banchans[i], victim);
introduce_client(NULL, victim, victim->user, victim->name);
victim->lazyLinkClientExists = 0; /* force introducing to LL servers below... */
if (victim->user->channel.head)
for (ptr = victim->user->channel.head; ptr; ptr = ptr->next) {
chptr = (struct Channel *)ptr->data;
if (is_chan_op(chptr, victim))
flag = "@";
#ifdef HALFOPS
else if (is_half_op(chptr, victim))
flag = "%";
#endif
else if (is_voiced(chptr, victim))
flag = "+";
else flag = "";
#ifdef REQUIRE_OANDV
if (find_user_link(&chptr->chanops_voiced, victim))
flag = "@+";
#endif
channel_modes(chptr, victim, modebuf, parabuf);
sendto_server(NULL, victim, chptr, NOCAPS, NOCAPS,
LL_ICLIENT|LL_ICHAN, ":%s SJOIN %lu %s %s %s :%s%s",
me.name, (unsigned long)chptr->channelts,
chptr->chname, modebuf, parabuf,
flag, victim->name);
}
}
}
int can_send(aClient *cptr, aChannel *chptr, char *msgtext, int notice)
{
Membership *lp;
int member;
/*
* #0000053 by |savage|, speedup
*/
if (!MyClient(cptr))
{
if (IsClient(cptr))
{
/* channelmode +mu is a special case.. sux!. -- Syzop */
lp = find_membership_link(cptr->user->channel, chptr);
if ((chptr->mode.mode & MODE_MODERATED) && (chptr->mode.mode & MODE_AUDITORIUM) &&
!IsOper(cptr) &&
(!lp || !(lp->flags & (CHFL_CHANOP|CHFL_VOICE|CHFL_CHANOWNER|CHFL_HALFOP|CHFL_CHANPROT))) &&
!is_irc_banned(chptr))
{
sendto_chmodemucrap(cptr, chptr, msgtext);
return (CANNOT_SEND_MODERATED);
}
}
return 0;
}
if (chptr->mode.mode & MODE_NOCOLOR)
{
/* A bit faster */
char *c;
for (c = msgtext; *c; c++)
{
if (*c == 3 || *c == 27 || *c == 4 || *c == 22) /* mirc color, ansi, rgb, reverse */
return (CANNOT_SEND_NOCOLOR);
}
}
member = IsMember(cptr, chptr);
if (chptr->mode.mode & MODE_NOPRIVMSGS && !member)
return (CANNOT_SEND_NOPRIVMSGS);
lp = find_membership_link(cptr->user->channel, chptr);
if ((chptr->mode.mode & MODE_MODREG) && !op_can_override(cptr) && !IsRegNick(cptr) &&
(!lp
|| !(lp->flags & (CHFL_CHANOP | CHFL_VOICE | CHFL_CHANOWNER |
CHFL_HALFOP | CHFL_CHANPROT))))
return CANNOT_SEND_MODREG;
if (chptr->mode.mode & MODE_MODERATED && !op_can_override(cptr) &&
(!lp
|| !(lp->flags & (CHFL_CHANOP | CHFL_VOICE | CHFL_CHANOWNER |
CHFL_HALFOP | CHFL_CHANPROT))))
{
if ((chptr->mode.mode & MODE_AUDITORIUM) && !is_irc_banned(chptr) && !is_banned(cptr, chptr, BANCHK_MSG))
sendto_chmodemucrap(cptr, chptr, msgtext);
return (CANNOT_SEND_MODERATED);
}
if (chptr->mode.mode & MODE_NOCTCP &&
(!lp
|| !(lp->flags & (CHFL_CHANOP | CHFL_CHANOWNER | CHFL_CHANPROT))))
if (msgtext[0] == 1 && strncmp(&msgtext[1], "ACTION ", 7))
return (CANNOT_SEND_NOCTCP);
#ifdef EXTCMODE
if (notice && (chptr->mode.extmode & EXTMODE_NONOTICE) &&
(!lp || !(lp->flags & (CHFL_CHANOP | CHFL_CHANOWNER | CHFL_CHANPROT))))
return (CANNOT_SEND_NOTICE);
#endif
/* Makes opers able to talk thru bans -Stskeeps suggested by The_Cat */
if (IsOper(cptr))
return 0;
if ((!lp
|| !(lp->flags & (CHFL_CHANOP | CHFL_VOICE | CHFL_CHANOWNER |
CHFL_HALFOP | CHFL_CHANPROT))) && MyClient(cptr)
&& is_banned(cptr, chptr, BANCHK_MSG))
return (CANNOT_SEND_BAN);
return 0;
}
/* m_knock
* parv[0] = sender prefix
* parv[1] = channel
*
* The KNOCK command has the following syntax:
* :<sender> KNOCK <channel>
*
* If a user is not banned from the channel they can use the KNOCK
* command to have the server NOTICE the channel operators notifying
* they would like to join. Helpful if the channel is invite-only, the
* key is forgotten, or the channel is full (INVITE can bypass each one
* of these conditions. Concept by Dianora <*****@*****.**> and written by
* <anonymous>
*/
static void
m_knock(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
struct Channel *chptr = NULL;
if (EmptyString(parv[1]))
{
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
me.name, source_p->name, "KNOCK");
return;
}
if (!ConfigChannel.use_knock && MyClient(source_p))
{
sendto_one(source_p, form_str(ERR_KNOCKDISABLED),
me.name, source_p->name);
return;
}
if ((chptr = hash_find_channel(parv[1])) == NULL)
{
sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
me.name, source_p->name, parv[1]);
return;
}
/* Normal channel, just be sure they aren't on it */
if (IsMember(source_p, chptr))
{
sendto_one(source_p, form_str(ERR_KNOCKONCHAN), me.name,
source_p->name, chptr->chname);
return;
}
if (!((chptr->mode.mode & MODE_INVITEONLY) || (*chptr->mode.key) ||
(chptr->mode.limit && dlink_list_length(&chptr->members) >=
chptr->mode.limit)))
{
sendto_one(source_p, form_str(ERR_CHANOPEN), me.name,
source_p->name, chptr->chname);
return;
}
if (MyClient(source_p))
{
/*
* Don't allow a knock if the user is banned, or the channel is private
*/
if (PrivateChannel(chptr) || is_banned(chptr, source_p))
{
sendto_one(source_p, form_str(ERR_CANNOTSENDTOCHAN),
me.name, source_p->name, chptr->chname);
return;
}
/*
* flood protection:
* allow one knock per user per knock_delay
* allow one knock per channel per knock_delay_channel
*
* we only limit local requests..
*/
if ((source_p->localClient->last_knock + ConfigChannel.knock_delay) >
CurrentTime)
{
sendto_one(source_p, form_str(ERR_TOOMANYKNOCK), me.name,
source_p->name, chptr->chname, "user");
return;
}
if ((chptr->last_knock + ConfigChannel.knock_delay_channel) > CurrentTime)
{
sendto_one(source_p, form_str(ERR_TOOMANYKNOCK), me.name,
source_p->name, chptr->chname, "channel");
return;
}
source_p->localClient->last_knock = CurrentTime;
sendto_one(source_p, form_str(RPL_KNOCKDLVR), me.name,
source_p->name, chptr->chname);
}
chptr->last_knock = CurrentTime;
if (ConfigChannel.use_knock)
sendto_channel_local(CHFL_CHANOP, NO, chptr, form_str(RPL_KNOCK),
me.name, chptr->chname, chptr->chname,
source_p->name, source_p->username,
source_p->host);
sendto_server(client_p, chptr, CAP_KNOCK|CAP_TS6, NOCAPS,
":%s KNOCK %s", ID(source_p), chptr->chname);
sendto_server(client_p, chptr, CAP_KNOCK, CAP_TS6,
":%s KNOCK %s", source_p->name, chptr->chname);
}