/*
* IRC - Internet Relay Chat, ircd/m_kick.c
* Copyright (C) 1990 Jarkko Oikarinen and
* University of Oulu, Computing Center
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: m_kick.c 1338 2005-10-03 10:19:15Z sirvulcan $
*/
/*
* m_functions execute protocol messages on this server:
*
* cptr is always NON-NULL, pointing to a *LOCAL* client
* structure (with an open socket connected!). This
* identifies the physical socket where the message
* originated (or which caused the m_function to be
* executed--some m_functions may call others...).
*
* sptr is the source of the message, defined by the
* prefix part of the message if present. If not
* or prefix not found, then sptr==cptr.
*
* (!IsServer(cptr)) => (cptr == sptr), because
* prefixes are taken *only* from servers...
*
* (IsServer(cptr))
* (sptr == cptr) => the message didn't
* have the prefix.
*
* (sptr != cptr && IsServer(sptr) means
* the prefix specified servername. (?)
*
* (sptr != cptr && !IsServer(sptr) means
* that message originated from a remote
* user (not local).
*
* combining
*
* (!IsServer(sptr)) means that, sptr can safely
* taken as defining the target structure of the
* message in this server.
*
* *Always* true (if 'parse' and others are working correct):
*
* 1) sptr->from == cptr (note: cptr->from == cptr)
*
* 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
* *cannot* be a local connection, unless it's
* actually cptr!). [MyConnect(x) should probably
* be defined as (x == x->from) --msa ]
*
* parc number of variable parameter strings (if zero,
* parv is allowed to be NULL)
*
* parv a NULL terminated list of parameter pointers,
*
* parv[0], sender (prefix string), if not present
* this points to an empty string.
* parv[1]...parv[parc-1]
* pointers to additional parameters
* parv[parc] == NULL, *always*
*
* note: it is guaranteed that parv[0]..parv[parc-1] are all
* non-NULL pointers.
*/
#include "config.h"
#include "channel.h"
#include "client.h"
#include "hash.h"
#include "ircd.h"
#include "ircd_features.h"
#include "ircd_reply.h"
#include "ircd_string.h"
#include "msg.h"
#include "numeric.h"
#include "numnicks.h"
#include "send.h"
#include <assert.h>
/*
* m_kick - generic message handler
*
* parv[0] = sender prefix
* parv[1] = channel
* parv[2] = client to kick
* parv[parc-1] = kick comment
*/
int m_kick(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
struct Client *who;
struct Channel *chptr;
struct Membership *member = 0;
char *name, *comment;
ClrFlag(sptr, FLAG_TS8);
if (parc < 3 || *parv[1] == '\0')
return need_more_params(sptr, "KICK");
name = parv[1];
/* simple checks */
if (!(chptr = get_channel(sptr, name, CGT_NO_CREATE)))
return send_reply(sptr, ERR_NOSUCHCHANNEL, name);
if (!is_chan_op(sptr, chptr) && !is_half_op(sptr, chptr))
return send_reply(sptr, ERR_CHANOPRIVSNEEDED, name);
if (!(who = find_chasing(sptr, parv[2], 0)))
return 0; /* find_chasing sends the reply for us */
/* Don't allow the channel service to be kicked */
/*
* ASUKA_X:
* Allow +X'ed users to kick +k'ed, but not U-lined services.
* --Bigfoot
*/
if (IsChannelService(who) && IsService(cli_user(who)->server))
return send_reply(sptr, ERR_ISREALSERVICE, cli_name(who), chptr->chname);
if (IsChannelService(who) && !IsXtraOp(sptr) && (who!=sptr))
return send_reply(sptr, ERR_ISCHANSERVICE, cli_name(who), chptr->chname);
/* Don't allow halfops to kick chanops */
if (is_chan_op(who, chptr) && is_half_op(sptr, chptr) && !is_chan_op(sptr, chptr))
return send_reply(sptr, ERR_HALFCANTKICKOP, name);
/* Prevent kicking opers from local channels -DM- */
if (IsLocalChannel(chptr->chname) && HasPriv(who, PRIV_DEOP_LCHAN))
return send_reply(sptr, ERR_ISOPERLCHAN, cli_name(who), chptr->chname);
/* check if kicked user is actually on the channel */
if (!(member = find_member_link(chptr, who)) || IsZombie(member))
return send_reply(sptr, ERR_USERNOTINCHANNEL, cli_name(who), chptr->chname);
/* We rely on ircd_snprintf to truncate the comment */
comment = EmptyString(parv[parc - 1]) ? parv[0] : parv[parc - 1];
if (!IsLocalChannel(name))
sendcmdto_serv_butone(sptr, CMD_KICK, cptr, "%H %C :%s", chptr, who,
comment);
sendcmdto_channel_butserv_butone((IsServer(sptr) ? &me : sptr), CMD_KICK,
chptr, NULL, 0, "%H %C :%s", chptr, who,
comment);
make_zombie(member, who, cptr, sptr, chptr);
return 0;
}
/*
* ms_kick - server message handler
*
* parv[0] = sender prefix
* parv[1] = channel
* parv[2] = client to kick
* parv[parc-1] = kick comment
*/
int ms_kick(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
struct Client *who;
struct Channel *chptr;
struct Membership *member = 0, *sptr_link = 0;
char *name, *comment;
ClrFlag(sptr, FLAG_TS8);
if (parc < 3 || *parv[1] == '\0')
return need_more_params(sptr, "KICK");
name = parv[1];
comment = parv[parc - 1];
/* figure out who gets kicked from what */
if (IsLocalChannel(name) ||
!(chptr = get_channel(sptr, name, CGT_NO_CREATE)) ||
!(who = findNUser(parv[2])))
return 0;
/* We go ahead and pass on the KICK for users not on the channel */
if (!(member = find_member_link(chptr, who)) || IsZombie(member))
member = 0;
/* Send HACK notice, but not for servers in BURST */
/* 2002-10-17: Don't send HACK if the users local server is kicking them */
if (IsServer(sptr)
&& !IsBurstOrBurstAck(sptr)
&& sptr!=cli_from(who))
sendto_opmask_butone(0, SNO_HACK4, "HACK: %C KICK %H %C %s", sptr, chptr,
who, comment);
/* Unless someone accepted it downstream (or the user isn't on the channel
* here), if kicker is not on channel, or if kicker is not a channel
* operator, bounce the kick
*
* Don't bounce the kick if it's coming from a channel service, regardless
* of channel membership. -- aaronc
*/
if (!IsServer(sptr) && !IsChannelService(sptr) && member && cli_from(who) != cptr &&
(!(sptr_link = find_member_link(chptr, sptr)) || (!IsChanOp(sptr_link) && !IsHalfOp(sptr_link)))) {
sendto_opmask_butone(0, SNO_HACK2, "HACK: %C KICK %H %C %s", sptr, chptr,
who, comment);
sendcmdto_one(who, CMD_JOIN, cptr, "%H", chptr);
/* Reop/revoice member */
if (IsChanOp(member) || IsHalfOp(member) || HasVoice(member)) {
struct ModeBuf mbuf;
modebuf_init(&mbuf, sptr, cptr, chptr,
(MODEBUF_DEST_SERVER | /* Send mode to a server */
MODEBUF_DEST_DEOP | /* Deop the source */
MODEBUF_DEST_BOUNCE)); /* And bounce the MODE */
if (IsChanOp(member))
modebuf_mode_client(&mbuf, MODE_DEL | MODE_CHANOP, who);
if (IsHalfOp(member))
modebuf_mode_client(&mbuf, MODE_DEL | MODE_HALFOP, who);
if (HasVoice(member))
modebuf_mode_client(&mbuf, MODE_DEL | MODE_VOICE, who);
modebuf_flush(&mbuf);
}
} else {
/* Propagate kick... */
sendcmdto_serv_butone(sptr, CMD_KICK, cptr, "%H %C :%s", chptr, who,
comment);
if (member) { /* and tell the channel about it */
sendcmdto_channel_butserv_butone(IsServer(sptr) ? &his : sptr, CMD_KICK,
chptr, NULL, 0, "%H %C :%s", chptr, who,
comment);
make_zombie(member, who, cptr, sptr, chptr);
}
}
return 0;
}
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