/* * 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 /* * 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; }