2 * IRC - Internet Relay Chat, ircd/m_clearmode.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
5 * Copyright (C) 2000 Kevin L. Mitchell <klmitch@mit.edu>
7 * See file AUTHORS in IRC package for additional names of
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 1, or (at your option)
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 * m_functions execute protocol messages on this server:
30 * cptr is always NON-NULL, pointing to a *LOCAL* client
31 * structure (with an open socket connected!). This
32 * identifies the physical socket where the message
33 * originated (or which caused the m_function to be
34 * executed--some m_functions may call others...).
36 * sptr is the source of the message, defined by the
37 * prefix part of the message if present. If not
38 * or prefix not found, then sptr==cptr.
40 * (!IsServer(cptr)) => (cptr == sptr), because
41 * prefixes are taken *only* from servers...
44 * (sptr == cptr) => the message didn't
47 * (sptr != cptr && IsServer(sptr) means
48 * the prefix specified servername. (?)
50 * (sptr != cptr && !IsServer(sptr) means
51 * that message originated from a remote
56 * (!IsServer(sptr)) means that, sptr can safely
57 * taken as defining the target structure of the
58 * message in this server.
60 * *Always* true (if 'parse' and others are working correct):
62 * 1) sptr->from == cptr (note: cptr->from == cptr)
64 * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
65 * *cannot* be a local connection, unless it's
66 * actually cptr!). [MyConnect(x) should probably
67 * be defined as (x == x->from) --msa ]
69 * parc number of variable parameter strings (if zero,
70 * parv is allowed to be NULL)
72 * parv a NULL terminated list of parameter pointers,
74 * parv[0], sender (prefix string), if not present
75 * this points to an empty string.
76 * parv[1]...parv[parc-1]
77 * pointers to additional parameters
78 * parv[parc] == NULL, *always*
80 * note: it is guaranteed that parv[0]..parv[parc-1] are all
89 #include "ircd_alloc.h"
90 #include "ircd_features.h"
92 #include "ircd_reply.h"
93 #include "ircd_string.h"
101 /* #include <assert.h> -- Now using assert in ircd_log.h */
104 * do_clearmode(struct Client *cptr, struct Client *sptr,
105 * struct Channel *chptr, char *control)
107 * This is the function that actually clears the channel modes.
110 do_clearmode(struct Client *cptr, struct Client *sptr, struct Channel *chptr,
113 static int flags[] = {
119 MODE_TOPICLIMIT, 't',
120 MODE_INVITEONLY, 'i',
121 MODE_NOPRIVMSGS, 'n',
130 unsigned int del_mode = 0;
131 char control_buf[20];
132 int control_buf_i = 0;
134 struct Ban *link, *next;
135 struct Membership *member;
137 /* Ok, so what are we supposed to get rid of? */
138 for (; *control; control++) {
139 for (flag_p = flags; flag_p[0]; flag_p += 2)
140 if (*control == flag_p[1]) {
141 del_mode |= flag_p[0];
147 return 0; /* nothing to remove; ho hum. */
149 modebuf_init(&mbuf, sptr, cptr, chptr,
150 (MODEBUF_DEST_CHANNEL | /* Send MODE to channel */
151 MODEBUF_DEST_OPMODE | /* Treat it like an OPMODE */
152 MODEBUF_DEST_HACK4)); /* Generate a HACK(4) notice */
154 modebuf_mode(&mbuf, MODE_DEL | (del_mode & chptr->mode.mode));
155 chptr->mode.mode &= ~del_mode; /* and of course actually delete them */
157 /* If we're removing invite, remove all the invites */
158 if (del_mode & MODE_INVITEONLY)
159 mode_invite_clear(chptr);
162 * If we're removing the key, note that; note that we can't clear
163 * the key until after modebuf_* are done with it
165 if (del_mode & MODE_KEY && *chptr->mode.key)
166 modebuf_mode_string(&mbuf, MODE_DEL | MODE_KEY, chptr->mode.key, 0);
168 /* If we're removing the limit, note that and clear the limit */
169 if (del_mode & MODE_LIMIT && chptr->mode.limit) {
170 modebuf_mode_uint(&mbuf, MODE_DEL | MODE_LIMIT, chptr->mode.limit);
171 chptr->mode.limit = 0; /* not referenced, so safe */
175 * Go through and mark the bans for deletion; note that we can't
176 * free them until after modebuf_* are done with them
178 if (del_mode & MODE_BAN) {
179 for (link = chptr->banlist; link; link = next) {
183 DupString(bandup, link->banstr);
184 modebuf_mode_string(&mbuf, MODE_DEL | MODE_BAN, /* delete ban */
192 /* Deal with users on the channel */
193 if (del_mode & (MODE_BAN | MODE_CHANOP | MODE_VOICE))
194 for (member = chptr->members; member; member = member->next_member) {
195 if (IsZombie(member)) /* we ignore zombies */
198 if (del_mode & MODE_BAN) /* If we cleared bans, clear the valid flags */
199 ClearBanValid(member);
201 /* Drop channel operator status */
202 if (IsChanOp(member) && del_mode & MODE_CHANOP) {
203 modebuf_mode_client(&mbuf, MODE_DEL | MODE_CHANOP, member->user, MAXOPLEVEL + 1);
204 member->status &= ~CHFL_CHANOP;
208 if (HasVoice(member) && del_mode & MODE_VOICE) {
209 modebuf_mode_client(&mbuf, MODE_DEL | MODE_VOICE, member->user, MAXOPLEVEL + 1);
210 member->status &= ~CHFL_VOICE;
214 /* And flush the modes to the channel */
215 modebuf_flush(&mbuf);
217 /* Finally, we can clear the key... */
218 if (del_mode & MODE_KEY)
219 chptr->mode.key[0] = '\0';
221 /* Ok, build control string again */
222 for (flag_p = flags; flag_p[0]; flag_p += 2)
223 if (del_mode & flag_p[0])
224 control_buf[control_buf_i++] = flag_p[1];
226 control_buf[control_buf_i] = '\0';
229 log_write(LS_OPERMODE, L_INFO, LOG_NOSNOTICE, "%#C CLEARMODE %H %s", sptr,
233 if (!IsLocalChannel(chptr->chname))
234 sendcmdto_serv_butone(sptr, CMD_CLEARMODE, cptr, "%H %s", chptr,
241 * ms_clearmode - server message handler
243 * parv[0] = Send prefix
244 * parv[1] = Channel name
245 * parv[2] = Control string
248 ms_clearmode(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
250 struct Channel *chptr;
253 return need_more_params(sptr, "CLEARMODE");
255 if (!IsPrivileged(sptr)) {
256 protocol_violation(sptr,"No privileges on source for CLEARMODE, desync?");
257 return send_reply(sptr, ERR_NOPRIVILEGES);
260 if (!IsChannelName(parv[1]) || IsLocalChannel(parv[1]) ||
261 !(chptr = FindChannel(parv[1])))
262 return send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
264 return do_clearmode(cptr, sptr, chptr, parv[2]);
268 * mo_clearmode - oper message handler
270 * parv[0] = Send prefix
271 * parv[1] = Channel name
272 * parv[2] = Control string
275 mo_clearmode(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
277 struct Channel *chptr;
278 char *control = "ovpsmikbl"; /* default control string */
279 const char *chname, *qreason;
282 if (!feature_bool(FEAT_CONFIG_OPERCMDS))
283 return send_reply(sptr, ERR_DISABLED, "CLEARMODE");
286 return need_more_params(sptr, "CLEARMODE");
295 if (!HasPriv(sptr, IsLocalChannel(chname) ?
296 PRIV_FORCE_LOCAL_OPMODE :
298 return send_reply(sptr, ERR_NOPRIVILEGES);
303 IsLocalChannel(chname) ? PRIV_LOCAL_OPMODE : PRIV_OPMODE))
304 return send_reply(sptr, ERR_NOPRIVILEGES);
306 if (('#' != *chname && '&' != *chname) || !(chptr = FindChannel(chname)))
307 return send_reply(sptr, ERR_NOSUCHCHANNEL, chname);
309 if (!force && (qreason = find_quarantine(chptr->chname)))
310 return send_reply(sptr, ERR_QUARANTINED, chptr->chname, qreason);
312 return do_clearmode(cptr, sptr, chptr, control);