+ static int flags[] = {
+ MODE_CHANOP, 'o',
+ MODE_VOICE, 'v',
+ MODE_PRIVATE, 'p',
+ MODE_SECRET, 's',
+ MODE_MODERATED, 'm',
+ MODE_TOPICLIMIT, 't',
+ MODE_INVITEONLY, 'i',
+ MODE_NOPRIVMSGS, 'n',
+ MODE_KEY, 'k',
+ MODE_BAN, 'b',
+ MODE_LIMIT, 'l',
+ MODE_REGONLY, 'r',
+ MODE_DELJOINS, 'D',
+ 0x0, 0x0
+ };
+ int *flag_p;
+ unsigned int del_mode = 0;
+ char control_buf[20];
+ int control_buf_i = 0;
+ struct ModeBuf mbuf;
+ struct Ban *link, *next;
+ struct Membership *member;
+
+ /* Ok, so what are we supposed to get rid of? */
+ for (; *control; control++) {
+ for (flag_p = flags; flag_p[0]; flag_p += 2)
+ if (*control == flag_p[1]) {
+ del_mode |= flag_p[0];
+ break;
+ }
+ }
+
+ if (!del_mode)
+ return 0; /* nothing to remove; ho hum. */
+
+ modebuf_init(&mbuf, sptr, cptr, chptr,
+ (MODEBUF_DEST_CHANNEL | /* Send MODE to channel */
+ MODEBUF_DEST_OPMODE | /* Treat it like an OPMODE */
+ MODEBUF_DEST_HACK4)); /* Generate a HACK(4) notice */
+
+ modebuf_mode(&mbuf, MODE_DEL | (del_mode & chptr->mode.mode));
+ chptr->mode.mode &= ~del_mode; /* and of course actually delete them */
+
+ /* If we're removing invite, remove all the invites */
+ if (del_mode & MODE_INVITEONLY)
+ mode_invite_clear(chptr);
+
+ /*
+ * If we're removing the key, note that; note that we can't clear
+ * the key until after modebuf_* are done with it
+ */
+ if (del_mode & MODE_KEY && *chptr->mode.key)
+ modebuf_mode_string(&mbuf, MODE_DEL | MODE_KEY, chptr->mode.key, 0);
+
+ /* If we're removing the limit, note that and clear the limit */
+ if (del_mode & MODE_LIMIT && chptr->mode.limit) {
+ modebuf_mode_uint(&mbuf, MODE_DEL | MODE_LIMIT, chptr->mode.limit);
+ chptr->mode.limit = 0; /* not referenced, so safe */
+ }
+
+ /*
+ * Go through and mark the bans for deletion; note that we can't
+ * free them until after modebuf_* are done with them
+ */
+ if (del_mode & MODE_BAN) {
+ for (link = chptr->banlist; link; link = next) {
+ char *bandup;
+ next = link->next;
+
+ DupString(bandup, link->banstr);
+ modebuf_mode_string(&mbuf, MODE_DEL | MODE_BAN, /* delete ban */
+ bandup, 1);
+ free_ban(link);
+ }
+
+ chptr->banlist = 0;
+ }
+
+ /* Deal with users on the channel */
+ if (del_mode & (MODE_BAN | MODE_CHANOP | MODE_VOICE))
+ for (member = chptr->members; member; member = member->next_member) {
+ if (IsZombie(member)) /* we ignore zombies */
+ continue;
+
+ if (del_mode & MODE_BAN) /* If we cleared bans, clear the valid flags */
+ ClearBanValid(member);
+
+ /* Drop channel operator status */
+ if (IsChanOp(member) && del_mode & MODE_CHANOP) {
+ modebuf_mode_client(&mbuf, MODE_DEL | MODE_CHANOP, member->user, MAXOPLEVEL + 1);
+ member->status &= ~CHFL_CHANOP;
+ }
+
+ /* Drop voice */
+ if (HasVoice(member) && del_mode & MODE_VOICE) {
+ modebuf_mode_client(&mbuf, MODE_DEL | MODE_VOICE, member->user, MAXOPLEVEL + 1);
+ member->status &= ~CHFL_VOICE;
+ }
+ }
+
+ /* And flush the modes to the channel */
+ modebuf_flush(&mbuf);
+
+ /* Finally, we can clear the key... */
+ if (del_mode & MODE_KEY)
+ chptr->mode.key[0] = '\0';
+
+ /* Ok, build control string again */
+ for (flag_p = flags; flag_p[0]; flag_p += 2)
+ if (del_mode & flag_p[0])
+ control_buf[control_buf_i++] = flag_p[1];
+
+ control_buf[control_buf_i] = '\0';
+
+ /* Log it... */
+ log_write(LS_OPERMODE, L_INFO, LOG_NOSNOTICE, "%#C CLEARMODE %H %s", sptr,
+ chptr, control_buf);
+
+ /* Then send it */
+ if (!IsLocalChannel(chptr->chname))
+ sendcmdto_serv_butone(sptr, CMD_CLEARMODE, cptr, "%H %s", chptr,
+ control_buf);
+