/*
* IRC - Internet Relay Chat, ircd/m_invite.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_invite.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 "list.h"
#include "msg.h"
#include "numeric.h"
#include "numnicks.h"
#include "s_user.h"
#include "send.h"
#include "ircd_struct.h"
#include <stdlib.h>
/*
* m_invite - generic message handler
*
* parv[0] - sender prefix
* parv[1] - user to invite
* parv[2] - channel name
*
* - INVITE now is accepted only if who does it is chanop (this of course
* implies that channel must exist and he must be on it).
*
* - On the other side it IS processed even if channel is NOT invite only
* leaving room for other enhancements like inviting banned ppl. -- Nemesi
*
* - Invite with no parameters now lists the channels you are invited to.
* - Isomer 23 Oct 99
*/
int m_invite(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
struct Client *acptr;
struct Channel *chptr;
if (parc < 2 ) {
/*
* list the channels you have an invite to.
*/
struct SLink *lp;
for (lp = cli_user(sptr)->invited; lp; lp = lp->next)
send_reply(cptr, RPL_INVITELIST, lp->value.chptr->chname);
send_reply(cptr, RPL_ENDOFINVITELIST);
return 0;
}
if (parc < 3 || EmptyString(parv[2]))
return need_more_params(sptr, "INVITE");
if (!(acptr = FindUser(parv[1]))) {
send_reply(sptr, ERR_NOSUCHNICK, parv[1]);
return 0;
}
if (is_silenced(sptr, acptr))
return 0;
clean_channelname(parv[2]);
if (!IsChannelPrefix(*parv[2]))
return 0;
/* bad channel name */
if (!IsChannelName(parv[2]) || HasCntrl(parv[2])) {
send_reply(sptr, ERR_NOSUCHCHANNEL, parv[2]);
return 0;
}
if (!(chptr = FindChannel(parv[2]))) {
send_reply(sptr, ERR_NOTONCHANNEL, parv[2]);
return 0;
}
if (!find_channel_member(sptr, chptr)) {
send_reply(sptr, ERR_NOTONCHANNEL, chptr->chname);
return 0;
}
if (find_channel_member(acptr, chptr)) {
send_reply(sptr, ERR_USERONCHANNEL, cli_name(acptr), chptr->chname);
return 0;
}
if (!is_chan_op(sptr, chptr) && !is_half_op(sptr, chptr)) {
send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
return 0;
}
/* If we get here, it was a VALID and meaningful INVITE */
if (IsAccountOnly(acptr) && !IsAccount(sptr) && !IsOper(sptr)) {
send_reply(sptr, ERR_ACCOUNTONLY, cli_name(acptr), "INVITE");
return 0;
}
if (check_target_limit(sptr, acptr, cli_name(acptr), 0))
return 0;
send_reply(sptr, RPL_INVITING, cli_name(acptr), chptr->chname);
if (cli_user(acptr)->away)
send_reply(sptr, RPL_AWAY, cli_name(acptr), cli_user(acptr)->away);
if (MyConnect(acptr)) {
add_invite(acptr, chptr);
sendcmdto_one(sptr, CMD_INVITE, acptr, "%s :%H", cli_name(acptr), chptr);
} else {
sendcmdto_one(sptr, CMD_INVITE, acptr, "%s %H %Tu", cli_name(acptr), chptr,
chptr->creationtime);
}
if (!IsLocalChannel(chptr->chname) || MyConnect(acptr)) {
if (feature_bool(FEAT_ANNOUNCE_INVITES)) {
/* Announce to channel operators. */
sendcmdto_channel_butserv_butone(&his, get_error_numeric(RPL_ISSUEDINVITE)->str,
NULL, chptr, sptr, SKIP_NONOPS,
"%H %C %C :%C has been invited by %C",
chptr, acptr, sptr, acptr, sptr);
/* Announce to servers with channel operators. */
sendcmdto_channel_servers_butone(sptr, NULL, TOK_INVITE, chptr, acptr, SKIP_NONOPS,
"%s %H %Tu", cli_name(acptr),
chptr, chptr->creationtime);
}
}
return 0;
}
/*
* ms_invite - server message handler
*
* parv[0] - sender prefix
* parv[1] - user to invite
* parv[2] - channel name
* parv[3] - (optional) channel timestamp
*
* - INVITE now is accepted only if who does it is chanop (this of course
* implies that channel must exist and he must be on it).
*
* - On the other side it IS processed even if channel is NOT invite only
* leaving room for other enhancements like inviting banned ppl. -- Nemesi
*
* - Invite with no parameters now lists the channels you are invited to.
* - Isomer 23 Oct 99
*
* - Invite with too-late timestamp, or with no timestamp from a bursting
* server, is silently discarded. - Entrope 19 Jan 05
*/
int ms_invite(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
struct Client *acptr;
struct Channel *chptr;
time_t invite_ts;
if (IsServer(sptr)) {
/*
* this will blow up if we get an invite from a server
* we look for channel membership in sptr below.
*/
return protocol_violation(sptr,"Server attempting to invite");
}
if (parc < 3 || EmptyString(parv[2])) {
/*
* should have been handled upstream, ignore it.
*/
protocol_violation(sptr,"Too few arguments to invite");
return need_more_params(sptr,"INVITE");
}
if (!IsGlobalChannel(parv[2])) {
/*
* should not be sent
*/
return protocol_violation(sptr, "Invite to a non-standard channel %s",parv[2]);
}
if (!(acptr = FindUser(parv[1]))) {
send_reply(sptr, ERR_NOSUCHNICK, parv[1]);
return 0;
}
if (!(chptr = FindChannel(parv[2]))) {
/*
* allow invites to non existant channels, bleah
* avoid JOIN, INVITE, PART abuse
*/
sendcmdto_one(sptr, CMD_INVITE, acptr, "%C :%s", acptr, parv[2]);
return 0;
}
if (parc > 3) {
invite_ts = atoi(parv[3]);
if (invite_ts > chptr->creationtime)
return 0;
} else if (IsBurstOrBurstAck(cptr))
return 0;
if (!IsChannelService(sptr) && !find_channel_member(sptr, chptr)) {
send_reply(sptr, ERR_NOTONCHANNEL, chptr->chname);
return 0;
}
if (find_channel_member(acptr, chptr)) {
send_reply(sptr, ERR_USERONCHANNEL, cli_name(acptr), chptr->chname);
return 0;
}
if (is_silenced(sptr, acptr))
return 0;
if (MyConnect(acptr)) {
add_invite(acptr, chptr);
sendcmdto_one(sptr, CMD_INVITE, acptr, "%s :%H", cli_name(acptr), chptr);
} else {
sendcmdto_one(sptr, CMD_INVITE, acptr, "%s %H %Tu", cli_name(acptr), chptr,
chptr->creationtime);
}
if (feature_bool(FEAT_ANNOUNCE_INVITES)) {
/* Announce to channel operators. */
sendcmdto_channel_butserv_butone(&his, get_error_numeric(RPL_ISSUEDINVITE)->str,
NULL, chptr, sptr, SKIP_NONOPS,
"%H %C %C :%C has been invited by %C",
chptr, acptr, sptr, acptr, sptr);
/* Announce to servers with channel operators. */
sendcmdto_channel_servers_butone(sptr, NULL, TOK_INVITE, chptr, acptr, SKIP_NONOPS,
"%s %H %Tu", cli_name(acptr), chptr,
chptr->creationtime);
}
return 0;
}
syntax highlighted by Code2HTML, v. 0.9.1