2 * IRC - Internet Relay Chat, ircd/m_mode.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * See file AUTHORS in IRC package for additional names of
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 1, or (at your option)
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * m_functions execute protocol messages on this server:
29 * cptr is always NON-NULL, pointing to a *LOCAL* client
30 * structure (with an open socket connected!). This
31 * identifies the physical socket where the message
32 * originated (or which caused the m_function to be
33 * executed--some m_functions may call others...).
35 * sptr is the source of the message, defined by the
36 * prefix part of the message if present. If not
37 * or prefix not found, then sptr==cptr.
39 * (!IsServer(cptr)) => (cptr == sptr), because
40 * prefixes are taken *only* from servers...
43 * (sptr == cptr) => the message didn't
46 * (sptr != cptr && IsServer(sptr) means
47 * the prefix specified servername. (?)
49 * (sptr != cptr && !IsServer(sptr) means
50 * that message originated from a remote
55 * (!IsServer(sptr)) means that, sptr can safely
56 * taken as defining the target structure of the
57 * message in this server.
59 * *Always* true (if 'parse' and others are working correct):
61 * 1) sptr->from == cptr (note: cptr->from == cptr)
63 * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
64 * *cannot* be a local connection, unless it's
65 * actually cptr!). [MyConnect(x) should probably
66 * be defined as (x == x->from) --msa ]
68 * parc number of variable parameter strings (if zero,
69 * parv is allowed to be NULL)
71 * parv a NULL terminated list of parameter pointers,
73 * parv[0], sender (prefix string), if not present
74 * this points to an empty string.
75 * parv[1]...parv[parc-1]
76 * pointers to additional parameters
77 * parv[parc] == NULL, *always*
79 * note: it is guaranteed that parv[0]..parv[parc-1] are all
90 #include "ircd_reply.h"
91 #include "ircd_string.h"
100 /* #include <assert.h> -- Now using assert in ircd_log.h */
105 m_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
107 struct Channel *chptr = 0;
109 struct Membership *member;
112 return need_more_params(sptr, "MODE");
114 clean_channelname(parv[1]);
116 if (!IsChannelName(parv[1]) || !(chptr = FindChannel(parv[1])))
117 return set_user_mode(cptr, sptr, parc, parv);
119 ClrFlag(sptr, FLAG_TS8);
121 member = find_member_link(chptr, sptr);
124 char modebuf[MODEBUFLEN];
125 char parabuf[MODEBUFLEN];
127 *modebuf = *parabuf = '\0';
129 channel_modes(sptr, modebuf, parabuf, sizeof(parabuf), chptr, member);
130 send_reply(sptr, RPL_CHANNELMODEIS, chptr->chname, modebuf, parabuf);
131 send_reply(sptr, RPL_CREATIONTIME, chptr->chname, chptr->creationtime);
135 if (!member || !IsChanOp(member)) {
136 if (IsLocalChannel(chptr->chname) && HasPriv(sptr, PRIV_MODE_LCHAN)) {
137 modebuf_init(&mbuf, sptr, cptr, chptr,
138 (MODEBUF_DEST_CHANNEL | /* Send mode to channel */
139 MODEBUF_DEST_HACK4)); /* Send HACK(4) notice */
140 mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
141 (MODE_PARSE_SET | /* Set the mode */
142 MODE_PARSE_FORCE), /* Force it to take */
144 return modebuf_flush(&mbuf);
146 mode_parse(0, cptr, sptr, chptr, parc - 2, parv + 2,
147 (member ? MODE_PARSE_NOTOPER : MODE_PARSE_NOTMEMBER), member);
151 modebuf_init(&mbuf, sptr, cptr, chptr,
152 (MODEBUF_DEST_CHANNEL | /* Send mode to channel */
153 MODEBUF_DEST_SERVER)); /* Send mode to servers */
154 mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2, MODE_PARSE_SET, member);
155 return modebuf_flush(&mbuf);
159 ms_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
161 struct Channel *chptr = 0;
163 struct Membership *member;
166 return need_more_params(sptr, "MODE");
168 if (IsLocalChannel(parv[1]))
171 if (!(chptr = FindChannel(parv[1])))
172 return set_user_mode(cptr, sptr, parc, parv);
174 ClrFlag(sptr, FLAG_TS8);
176 if (IsServer(sptr)) {
177 if (find_conf_byhost(cli_confs(cptr), cli_name(sptr), CONF_UWORLD))
178 modebuf_init(&mbuf, sptr, cptr, chptr,
179 (MODEBUF_DEST_CHANNEL | /* Send mode to clients */
180 MODEBUF_DEST_SERVER | /* Send mode to servers */
181 MODEBUF_DEST_HACK4)); /* Send a HACK(4) message */
183 /* Servers need to be able to op people who join using the Apass
184 * or upass, therefore we accept modes for channels with an Apass
185 * without generating a HACK3. */
186 modebuf_init(&mbuf, sptr, cptr, chptr,
187 (MODEBUF_DEST_CHANNEL | /* Send mode to clients */
188 MODEBUF_DEST_SERVER | /* Send mode to servers */
189 (*chptr->mode.apass ? 0 : MODEBUF_DEST_HACK3)));
191 mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
192 (MODE_PARSE_SET | /* Set the mode */
193 MODE_PARSE_STRICT | /* Interpret it strictly */
194 MODE_PARSE_FORCE), /* And force it to be accepted */
197 if (!(member = find_member_link(chptr, sptr)) || !IsChanOp(member)) {
198 modebuf_init(&mbuf, sptr, cptr, chptr,
199 (MODEBUF_DEST_SERVER | /* Send mode to server */
200 MODEBUF_DEST_HACK2 | /* Send a HACK(2) message */
201 MODEBUF_DEST_DEOP | /* Deop the source */
202 MODEBUF_DEST_BOUNCE)); /* And bounce the MODE */
203 mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
204 (MODE_PARSE_STRICT | /* Interpret it strictly */
205 MODE_PARSE_BOUNCE), /* And bounce the MODE */
208 modebuf_init(&mbuf, sptr, cptr, chptr,
209 (MODEBUF_DEST_CHANNEL | /* Send mode to clients */
210 MODEBUF_DEST_SERVER)); /* Send mode to servers */
211 mode_parse(&mbuf, cptr, sptr, chptr, parc - 2, parv + 2,
212 (MODE_PARSE_SET | /* Set the mode */
213 MODE_PARSE_STRICT | /* Interpret it strictly */
214 MODE_PARSE_FORCE), /* And force it to be accepted */
219 return modebuf_flush(&mbuf);