275 lines
9.2 KiB
C
275 lines
9.2 KiB
C
/*
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* IRC - Internet Relay Chat, ircd/m_mode.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_mode.c 1818 2007-07-14 02:40:01Z isomer $
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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 "handlers.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_features.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 "s_conf.h"
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#include "s_debug.h"
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#include "s_user.h"
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#include "send.h"
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/* #include <assert.h> -- Now using assert in ircd_log.h */
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#include <stdlib.h>
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#include <string.h>
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int
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m_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
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{
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struct Channel *chptr = 0;
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struct ModeBuf mbuf;
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struct Membership *member;
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int hoflags = 0;
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if (parc < 2)
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return need_more_params(sptr, "MODE");
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if (!IsChannelName(parv[1]) || !(chptr = FindChannel(parv[1])))
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{
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struct Client *acptr;
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acptr = FindUser(parv[1]);
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if (!acptr)
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{
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send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
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return 0;
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}
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else if (sptr != acptr)
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{
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send_reply(sptr, ERR_USERSDONTMATCH);
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return 0;
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}
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if (!IsAnOper(sptr) && IsRestrictUMode(sptr))
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return 0;
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return set_user_mode(cptr, sptr, parc, parv, ALLOWMODES_ANY);
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}
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ClrFlag(sptr, FLAG_TS8);
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member = find_member_link(chptr, sptr);
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if (parc < 3) {
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char modebuf[MODEBUFLEN];
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char parabuf[MODEBUFLEN];
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*modebuf = *parabuf = '\0';
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modebuf[1] = '\0';
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channel_modes(sptr, modebuf, parabuf, sizeof(parabuf), chptr, member);
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send_reply(sptr, RPL_CHANNELMODEIS, chptr->chname, modebuf, parabuf);
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send_reply(sptr, RPL_CREATIONTIME, chptr->chname, chptr->creationtime);
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return 0;
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}
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if (!member || (!IsChanOp(member) && !IsHalfOp(member))) {
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if (IsLocalChannel(chptr->chname) && HasPriv(sptr, PRIV_MODE_LCHAN)) {
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to channel */
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MODEBUF_DEST_HACK4)); /* Send HACK(4) notice */
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mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
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(MODE_PARSE_SET | /* Set the mode */
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MODE_PARSE_FORCE), /* Force it to take */
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member);
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return modebuf_flush(&mbuf);
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} else
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mode_parse(0, cptr, sptr, chptr, parc - 2, parv + 2,
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(member ? MODE_PARSE_NOTOPER : MODE_PARSE_NOTMEMBER), member);
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return 0;
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}
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hoflags = MODE_PARSE_SET;
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if (member && !IsChanOp(member) && IsHalfOp(member))
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hoflags |= MODE_PARSE_ISHALFOP|MODE_PARSE_NOTOPER;
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to channel */
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MODEBUF_DEST_SERVER)); /* Send mode to servers */
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mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, hoflags, member);
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return modebuf_flush(&mbuf);
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}
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int
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ms_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
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{
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struct Channel *chptr = 0;
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struct ModeBuf mbuf;
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struct Membership *member;
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if (parc < 3)
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return need_more_params(sptr, "MODE");
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if (IsLocalChannel(parv[1]))
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return 0;
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if (!(chptr = FindChannel(parv[1])))
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{
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struct Client *acptr;
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acptr = FindUser(parv[1]);
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if (!acptr)
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{
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return 0;
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}
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else if ((sptr != acptr) && !IsServer(sptr))
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{
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sendwallto_group_butone(&me, WALL_WALLOPS, 0,
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"MODE for User %s from %s!%s", parv[1],
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cli_name(cptr), cli_name(sptr));
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return 0;
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}
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return set_user_mode(cptr, sptr, parc, parv, ALLOWMODES_ANY);
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}
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ClrFlag(sptr, FLAG_TS8);
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if (IsServer(sptr)) {
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if (find_conf_byhost(cli_confs(cptr), cli_name(sptr), CONF_UWORLD))
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to clients */
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MODEBUF_DEST_SERVER | /* Send mode to servers */
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MODEBUF_DEST_HACK4)); /* Send a HACK(4) message */
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else if (!feature_bool(FEAT_OPLEVELS))
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to clients */
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MODEBUF_DEST_SERVER | /* Send mode to servers */
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MODEBUF_DEST_HACK3)); /* Send a HACK(3) message */
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else
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/* Servers need to be able to op people who join using the Apass
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* or upass, as well as people joining a zannel, therefore we do
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* not generate HACK3 when oplevels are on. */
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to clients */
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MODEBUF_DEST_SERVER)); /* Send mode to servers */
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mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
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(MODE_PARSE_SET | /* Set the mode */
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MODE_PARSE_STRICT | /* Interpret it strictly */
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MODE_PARSE_FORCE), /* And force it to be accepted */
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NULL);
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} else {
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if (find_conf_byhost(cli_confs(cptr), cli_name(cli_user(sptr)->server), CONF_UWORLD) ||
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IsChannelService(sptr)) {
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to clients */
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MODEBUF_DEST_SERVER | /* Send mode to servers */
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MODEBUF_DEST_HACK4)); /* Send a HACK(4) message */
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mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
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(MODE_PARSE_SET | /* Set the mode */
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MODE_PARSE_STRICT | /* Interpret it strictly */
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MODE_PARSE_FORCE), /* And force it to be accepted */
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NULL);
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} else if (!(member = find_member_link(chptr, sptr)) || (!IsChanOp(member) && !IsHalfOp(member))) {
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_SERVER | /* Send mode to server */
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MODEBUF_DEST_HACK2 | /* Send a HACK(2) message */
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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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mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
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(MODE_PARSE_STRICT | /* Interpret it strictly */
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MODE_PARSE_BOUNCE), /* And bounce the MODE */
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member);
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} else {
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modebuf_init(&mbuf, sptr, cptr, chptr,
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(MODEBUF_DEST_CHANNEL | /* Send mode to clients */
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MODEBUF_DEST_SERVER)); /* Send mode to servers */
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mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
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(MODE_PARSE_SET | /* Set the mode */
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MODE_PARSE_STRICT | /* Interpret it strictly */
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MODE_PARSE_FORCE), /* And force it to be accepted */
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member);
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}
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}
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return modebuf_flush(&mbuf);
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}
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