--- /dev/null
+/*
+ * IRC - Internet Relay Chat, ircd/m_clearmode.c
+ * Copyright (C) 1990 Jarkko Oikarinen and
+ * University of Oulu, Computing Center
+ * Copyright (C) 2000 Kevin L. Mitchell <klmitch@mit.edu>
+ *
+ * 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_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 "client.h"
+#include "channel.h"
+#include "hash.h"
+#include "ircd.h"
+#include "ircd_alloc.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
+#include "ircd_reply.h"
+#include "ircd_string.h"
+#include "list.h"
+#include "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_conf.h"
+#include "send.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+
+/*
+ * do_clearmode(struct Client *cptr, struct Client *sptr,
+ * struct Channel *chptr, char *control)
+ *
+ * This is the function that actually clears the channel modes.
+ */
+static int
+do_clearmode(struct Client *cptr, struct Client *sptr, struct Channel *chptr,
+ char *control)
+{
+ 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);
+
+ return 0;
+}
+
+/*
+ * ms_clearmode - server message handler
+ *
+ * parv[0] = Send prefix
+ * parv[1] = Channel name
+ * parv[2] = Control string
+ */
+int
+ms_clearmode(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+ struct Channel *chptr;
+
+ if (parc < 3)
+ return need_more_params(sptr, "CLEARMODE");
+
+ if (!IsPrivileged(sptr)) {
+ protocol_violation(sptr,"No privileges on source for CLEARMODE, desync?");
+ return send_reply(sptr, ERR_NOPRIVILEGES);
+ }
+
+ if (!IsChannelName(parv[1]) || IsLocalChannel(parv[1]) ||
+ !(chptr = FindChannel(parv[1])))
+ return send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
+
+ return do_clearmode(cptr, sptr, chptr, parv[2]);
+}
+
+/*
+ * mo_clearmode - oper message handler
+ *
+ * parv[0] = Send prefix
+ * parv[1] = Channel name
+ * parv[2] = Control string
+ */
+int
+mo_clearmode(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+ struct Channel *chptr;
+ char *control = "ovpsmikbl"; /* default control string */
+ const char *chname, *qreason;
+ int force = 0;
+
+ if (!feature_bool(FEAT_CONFIG_OPERCMDS))
+ return send_reply(sptr, ERR_DISABLED, "CLEARMODE");
+
+ if (parc < 2)
+ return need_more_params(sptr, "CLEARMODE");
+
+ if (parc > 2)
+ control = parv[2];
+
+ chname = parv[1];
+ if (*chname == '!')
+ {
+ chname++;
+ if (!HasPriv(sptr, IsLocalChannel(chname) ?
+ PRIV_FORCE_LOCAL_OPMODE :
+ PRIV_FORCE_OPMODE))
+ return send_reply(sptr, ERR_NOPRIVILEGES);
+ force = 1;
+ }
+
+ if (!HasPriv(sptr,
+ IsLocalChannel(chname) ? PRIV_LOCAL_OPMODE : PRIV_OPMODE))
+ return send_reply(sptr, ERR_NOPRIVILEGES);
+
+ if (('#' != *chname && '&' != *chname) || !(chptr = FindChannel(chname)))
+ return send_reply(sptr, ERR_NOSUCHCHANNEL, chname);
+
+ if (!force && (qreason = find_quarantine(chptr->chname)))
+ return send_reply(sptr, ERR_QUARANTINED, chptr->chname, qreason);
+
+ return do_clearmode(cptr, sptr, chptr, control);
+}
projects / ircu2.10.12-pk.git / blobdiff