297 lines
10 KiB
C
297 lines
10 KiB
C
/*
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* IRC - Internet Relay Chat, ircd/m_kick.c
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* Copyright (C) 1990 Jarkko Oikarinen and
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* University of Oulu, Computing Center
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*
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* See file AUTHORS in IRC package for additional names of
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* the programmers.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: m_kick.c 1893 2008-11-18 03:18:46Z entrope $
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*/
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/*
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* m_functions execute protocol messages on this server:
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*
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* cptr is always NON-NULL, pointing to a *LOCAL* client
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* structure (with an open socket connected!). This
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* identifies the physical socket where the message
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* originated (or which caused the m_function to be
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* executed--some m_functions may call others...).
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*
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* sptr is the source of the message, defined by the
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* prefix part of the message if present. If not
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* or prefix not found, then sptr==cptr.
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*
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* (!IsServer(cptr)) => (cptr == sptr), because
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* prefixes are taken *only* from servers...
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*
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* (IsServer(cptr))
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* (sptr == cptr) => the message didn't
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* have the prefix.
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*
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* (sptr != cptr && IsServer(sptr) means
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* the prefix specified servername. (?)
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*
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* (sptr != cptr && !IsServer(sptr) means
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* that message originated from a remote
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* user (not local).
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*
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* combining
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*
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* (!IsServer(sptr)) means that, sptr can safely
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* taken as defining the target structure of the
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* message in this server.
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*
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* *Always* true (if 'parse' and others are working correct):
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*
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* 1) sptr->from == cptr (note: cptr->from == cptr)
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*
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* 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
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* *cannot* be a local connection, unless it's
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* actually cptr!). [MyConnect(x) should probably
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* be defined as (x == x->from) --msa ]
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*
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* parc number of variable parameter strings (if zero,
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* parv is allowed to be NULL)
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*
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* parv a NULL terminated list of parameter pointers,
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*
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* parv[0], sender (prefix string), if not present
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* this points to an empty string.
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* parv[1]...parv[parc-1]
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* pointers to additional parameters
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* parv[parc] == NULL, *always*
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*
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* note: it is guaranteed that parv[0]..parv[parc-1] are all
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* non-NULL pointers.
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*/
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#include "config.h"
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#include "channel.h"
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#include "client.h"
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#include "hash.h"
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#include "ircd.h"
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#include "ircd_log.h"
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#include "ircd_reply.h"
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#include "ircd_string.h"
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#include "msg.h"
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#include "numeric.h"
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#include "numnicks.h"
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#include "send.h"
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#include "ircd_features.h"
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/* #include <assert.h> -- Now using assert in ircd_log.h */
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/*
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* m_kick - generic message handler
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*
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* parv[0] = sender prefix
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* parv[1] = channel
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* parv[2] = client to kick
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* parv[parc-1] = kick comment
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*/
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int m_kick(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
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{
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struct Client *who;
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struct Channel *chptr;
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struct Membership *member = 0;
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struct Membership* member2;
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char *name, *comment;
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ClrFlag(sptr, FLAG_TS8);
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if (parc < 3 || *parv[1] == '\0')
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return need_more_params(sptr, "KICK");
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name = parv[1];
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/* simple checks */
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if (!(chptr = get_channel(sptr, name, CGT_NO_CREATE)))
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return send_reply(sptr, ERR_NOSUCHCHANNEL, name);
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if (!(member2 = find_member_link(chptr, sptr)) || IsZombie(member2)
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|| !(IsChanOp(member2) || IsHalfOp(member2)))
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return send_reply(sptr, ERR_CHANOPRIVSNEEDED, name);
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if (!(who = find_chasing(sptr, parv[2], 0)))
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return 0; /* find_chasing sends the reply for us */
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/* Don't allow the channel service to be kicked */
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if (IsChannelService(who) && IsService(cli_user(who)->server))
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return send_reply(sptr, ERR_ISCHANSERVICE, cli_name(who), chptr->chname, "a network service");
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if (IsChannelService(who) && !IsXtraOp(sptr) && (who!=sptr))
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return send_reply(sptr, ERR_ISCHANSERVICE, cli_name(who), chptr->chname, "a IRC operator");
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/* Prevent kicking opers from local channels -DM- */
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if (IsLocalChannel(chptr->chname) && HasPriv(who, PRIV_DEOP_LCHAN))
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return send_reply(sptr, ERR_ISOPERLCHAN, cli_name(who), chptr->chname);
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/* check if kicked user is actually on the channel */
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if (!(member = find_member_link(chptr, who)) || IsZombie(member))
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return send_reply(sptr, ERR_USERNOTINCHANNEL, cli_name(who), chptr->chname);
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/* Prevent halfops from kicking ops */
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if (IsChanOp(member) && IsHalfOp(member2) && !IsChanOp(member2))
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return send_reply(sptr, ERR_HALFCANTKICKOP, name);
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/* Don't allow to kick member with a higher op-level,
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* or members with the same op-level unless both are MAXOPLEVEL.
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*/
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if (OpLevel(member) < OpLevel(member2)
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|| (OpLevel(member) == OpLevel(member2)
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&& OpLevel(member) < MAXOPLEVEL))
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return send_reply(sptr, ERR_NOTLOWEROPLEVEL, cli_name(who), chptr->chname,
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OpLevel(member2), OpLevel(member), "kick",
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OpLevel(member) == OpLevel(member2) ? "the same" : "a higher");
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if (parc > 3)
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/* We rely on ircd_snprintf to truncate the comment */
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comment = EmptyString(parv[parc - 1]) ? parv[0] : parv[parc - 1];
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else
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comment = parv[0];
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if (!IsLocalChannel(name))
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sendcmdto_serv_butone(sptr, CMD_KICK, cptr, "%H %C :%s", chptr, who,
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comment);
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if (IsDelayedJoin(member)) {
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/* If it's a delayed join, only send the KICK to the person doing
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* the kicking and the victim */
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if (MyUser(who))
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sendcmdto_one(sptr, CMD_KICK, who, "%H %C :%s", chptr, who, comment);
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if (CapActive(sptr, CAP_EXTJOIN))
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sendcmdto_one(who, CMD_JOIN, sptr, "%H %s :%s", chptr, IsAccount(who) ? cli_account(who) : "*", cli_info(who));
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else
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sendcmdto_one(who, CMD_JOIN, sptr, "%H", chptr);
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sendcmdto_one(sptr, CMD_KICK, sptr, "%H %C :%s", chptr, who, comment);
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CheckDelayedJoins(chptr);
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} else
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sendcmdto_channel_butserv_butone(sptr, CMD_KICK, chptr, NULL, 0, "%H %C :%s", chptr, who,
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comment);
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make_zombie(member, who, cptr, sptr, chptr);
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return 0;
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}
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/*
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* ms_kick - server message handler
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*
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* parv[0] = sender prefix
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* parv[1] = channel
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* parv[2] = client to kick
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* parv[parc-1] = kick comment
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*/
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int ms_kick(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
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{
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struct Client *who;
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struct Channel *chptr;
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struct Membership *member = 0, *sptr_link = 0;
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char *name, *comment;
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ClrFlag(sptr, FLAG_TS8);
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if (parc < 3 || *parv[1] == '\0')
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return need_more_params(sptr, "KICK");
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name = parv[1];
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comment = parv[parc - 1];
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/* figure out who gets kicked from what */
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if (IsLocalChannel(name) ||
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!(chptr = get_channel(sptr, name, CGT_NO_CREATE)) ||
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!(who = findNUser(parv[2])))
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return 0;
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/* We go ahead and pass on the KICK for users not on the channel */
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member = find_member_link(chptr, who);
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if (member && IsZombie(member))
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{
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/* We might get a KICK from a zombie's own server because the user
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* net-rode during a burst (which always generates a KICK) *and*
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* was kicked via another server. In that case, we must remove
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* the user from the channel.
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*/
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if (sptr == cli_user(who)->server)
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{
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remove_user_from_channel(who, chptr);
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}
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/* Otherwise, we treat zombies like they are not channel members. */
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member = 0;
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}
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/* Send HACK notice, but not for servers in BURST */
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/* 2002-10-17: Don't send HACK if the users local server is kicking them */
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if (IsServer(sptr) &&
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!IsBurstOrBurstAck(sptr) &&
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sptr!=cli_user(who)->server)
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sendto_opmask_butone(0, SNO_HACK4, "HACK: %C KICK %H %C %s", sptr, chptr,
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who, comment);
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/* Unless someone accepted it downstream (or the user isn't on the channel
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* here), if kicker is not on channel, or if kicker is not a channel
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* operator, bounce the kick
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*/
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if (!IsServer(sptr) && !IsChannelService(sptr) && member && cli_from(who) != cptr &&
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(!(sptr_link = find_member_link(chptr, sptr)) ||
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(!IsChanOp(sptr_link) && !IsHalfOp(sptr_link)))) {
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sendto_opmask_butone(0, SNO_HACK2, "HACK: %C KICK %H %C %s", sptr, chptr,
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who, comment);
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sendcmdto_one(who, CMD_JOIN, cptr, "%H", chptr);
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/* Reop/revoice member */
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if (IsChanOp(member) || IsHalfOp(member) ||HasVoice(member)) {
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struct ModeBuf mbuf;
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_SERVER | /* Send mode to a server */
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MODEBUF_DEST_DEOP | /* Deop the source */
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MODEBUF_DEST_BOUNCE)); /* And bounce the MODE */
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if (IsChanOp(member))
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modebuf_mode_client(&mbuf, MODE_DEL | MODE_CHANOP, who, OpLevel(member));
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if (IsHalfOp(member))
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modebuf_mode_client(&mbuf, MODE_DEL | MODE_HALFOP, who, MAXOPLEVEL + 1);
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if (HasVoice(member))
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modebuf_mode_client(&mbuf, MODE_DEL | MODE_VOICE, who, MAXOPLEVEL + 1);
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modebuf_flush(&mbuf);
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}
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} else {
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/* Propagate kick... */
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sendcmdto_serv_butone(sptr, CMD_KICK, cptr, "%H %C :%s", chptr, who,
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comment);
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if (member) { /* and tell the channel about it */
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if (IsDelayedJoin(member)) {
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if (MyUser(who))
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sendcmdto_one(IsServer(sptr) ? &his : sptr, CMD_KICK,
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who, "%H %C :%s", chptr, who, comment);
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} else {
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sendcmdto_channel_butserv_butone(IsServer(sptr) ? &his : sptr, CMD_KICK,
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chptr, NULL, 0, "%H %C :%s", chptr, who,
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comment);
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}
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make_zombie(member, who, cptr, sptr, chptr);
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}
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}
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return 0;
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}
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