mirror of https://github.com/pissnet/pissircd.git
282 lines
7.9 KiB
C
282 lines
7.9 KiB
C
/*
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* IRC - Internet Relay Chat, src/modules/topic.c
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* (C) 2004-present The UnrealIRCd Team
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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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#include "unrealircd.h"
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CMD_FUNC(cmd_topic);
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#define MSG_TOPIC "TOPIC"
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ModuleHeader MOD_HEADER
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= {
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"topic",
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"5.0",
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"command /topic",
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"UnrealIRCd Team",
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"unrealircd-5",
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};
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MOD_INIT()
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{
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CommandAdd(modinfo->handle, MSG_TOPIC, cmd_topic, 4, CMD_USER|CMD_SERVER);
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MARK_AS_OFFICIAL_MODULE(modinfo);
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return MOD_SUCCESS;
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}
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MOD_LOAD()
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{
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return MOD_SUCCESS;
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}
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MOD_UNLOAD()
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{
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return MOD_SUCCESS;
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}
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void topicoverride(Client *client, Channel *channel, char *topic)
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{
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sendto_snomask(SNO_EYES,
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"*** OperOverride -- %s (%s@%s) TOPIC %s \'%s\'",
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client->name, client->user->username, client->user->realhost,
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channel->chname, topic);
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/* Logging implementation added by XeRXeS */
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ircd_log(LOG_OVERRIDE, "OVERRIDE: %s (%s@%s) TOPIC %s \'%s\'",
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client->name, client->user->username, client->user->realhost,
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channel->chname, topic);
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}
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/** Query or change the channel topic.
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*
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* Syntax for clients:
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* parv[1] = channel
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* parv[2] = new topic
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*
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* Syntax for server to server traffic:
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* parv[1] = channel name
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* parv[2] = topic nickname
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* parv[3] = topic time
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* parv[4] = topic text
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*/
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CMD_FUNC(cmd_topic)
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{
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Channel *channel = NULL;
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char *topic = NULL, *name, *tnick = client->name;
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char *errmsg = NULL;
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time_t ttime = 0;
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int i = 0;
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Hook *h;
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int ismember; /* cache: IsMember() */
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long flags = 0; /* cache: membership flags */
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MessageTag *mtags = NULL;
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if ((parc < 2) || BadPtr(parv[1]))
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{
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sendnumeric(client, ERR_NEEDMOREPARAMS, "TOPIC");
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return;
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}
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name = parv[1];
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channel = find_channel(parv[1], NULL);
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if (!channel)
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{
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sendnumeric(client, ERR_NOSUCHCHANNEL, name);
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return;
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}
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ismember = IsMember(client, channel); /* CACHE */
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if (ismember)
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flags = get_access(client, channel); /* CACHE */
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if (parc > 2 || SecretChannel(channel))
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{
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if (!ismember && !IsServer(client)
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&& !ValidatePermissionsForPath("channel:see:list:secret",client,NULL,channel,NULL) && !IsULine(client))
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{
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sendnumeric(client, ERR_NOTONCHANNEL, name);
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return;
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}
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if (parc > 2)
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topic = parv[2];
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}
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if (parc > 4)
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{
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tnick = parv[2];
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ttime = atol(parv[3]);
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topic = parv[4];
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}
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/* Only asking for the topic */
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if (!topic)
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{
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if (IsServer(client))
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return; /* Servers must maintain state, not ask */
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for (h = Hooks[HOOKTYPE_VIEW_TOPIC_OUTSIDE_CHANNEL]; h; h = h->next)
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{
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i = (*(h->func.intfunc))(client,channel);
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if (i != HOOK_CONTINUE)
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break;
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}
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/* If you're not a member, and you can't view outside channel, deny */
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if ((!ismember && i == HOOK_DENY) ||
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(is_banned(client,channel,BANCHK_JOIN,NULL,NULL) &&
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!ValidatePermissionsForPath("channel:see:topic",client,NULL,channel,NULL)))
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{
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sendnumeric(client, ERR_NOTONCHANNEL, name);
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return;
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}
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if (!channel->topic)
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sendnumeric(client, RPL_NOTOPIC, channel->chname);
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else
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{
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sendnumeric(client, RPL_TOPIC,
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channel->chname, channel->topic);
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sendnumeric(client, RPL_TOPICWHOTIME, channel->chname,
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channel->topic_nick, channel->topic_time);
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}
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return;
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}
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if (ttime && topic && (IsServer(client) || IsULine(client)))
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{
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if (!channel->topic_time || ttime > channel->topic_time || IsULine(client))
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/* The IsUline is to allow services to use an old TS. Apparently
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* some services do this in their topic enforcement -- codemastr
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*/
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{
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/* Set the topic */
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safe_strldup(channel->topic, topic, iConf.topic_length+1);
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safe_strldup(channel->topic_nick, tnick, NICKLEN+USERLEN+HOSTLEN+5);
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channel->topic_time = ttime;
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new_message(client, recv_mtags, &mtags);
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RunHook4(HOOKTYPE_TOPIC, client, channel, mtags, topic);
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sendto_server(client, 0, 0, mtags, ":%s TOPIC %s %s %lld :%s",
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client->id, channel->chname, channel->topic_nick,
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(long long)channel->topic_time, channel->topic);
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sendto_channel(channel, client, NULL, 0, 0, SEND_LOCAL, mtags,
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":%s TOPIC %s :%s",
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client->name, channel->chname, channel->topic);
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free_message_tags(mtags);
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}
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return;
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}
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/* Topic change. Either locally (check permissions!) or remote, check permissions: */
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if (IsUser(client))
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{
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char *newtopic = NULL;
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/* +t and not +hoaq ? */
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if ((channel->mode.mode & MODE_TOPICLIMIT) &&
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!is_skochanop(client, channel) && !IsULine(client) && !IsServer(client))
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{
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if (MyUser(client) && !ValidatePermissionsForPath("channel:override:topic", client, NULL, channel, NULL))
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{
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sendnumeric(client, ERR_CHANOPRIVSNEEDED, channel->chname);
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return;
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}
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topicoverride(client, channel, topic);
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}
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/* -t and banned? */
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newtopic = topic;
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if (!(channel->mode.mode & MODE_TOPICLIMIT) &&
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!is_skochanop(client, channel) && is_banned(client, channel, BANCHK_MSG, &newtopic, &errmsg))
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{
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char buf[512];
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if (MyUser(client) && !ValidatePermissionsForPath("channel:override:topic", client, NULL, channel, NULL))
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{
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ircsnprintf(buf, sizeof(buf), "You cannot change the topic on %s while being banned", channel->chname);
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sendnumeric(client, ERR_CANNOTDOCOMMAND, "TOPIC", buf);
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return;
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}
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topicoverride(client, channel, topic);
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}
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if (MyUser(client) && newtopic)
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topic = newtopic; /* process is_banned() changes of topic (eg: text replacement), but only for local clients */
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/* -t, +m, and not +vhoaq */
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if (((flags&CHFL_OVERLAP) == 0) && (channel->mode.mode & MODE_MODERATED))
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{
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char buf[512];
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if (MyUser(client) && ValidatePermissionsForPath("channel:override:topic", client, NULL, channel, NULL))
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{
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topicoverride(client, channel, topic);
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} else {
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/* With +m and -t, only voice and higher may change the topic */
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ircsnprintf(buf, sizeof(buf), "Voice (+v) or higher is required in order to change the topic on %s (channel is +m)", channel->chname);
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sendnumeric(client, ERR_CANNOTDOCOMMAND, "TOPIC", buf);
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return;
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}
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}
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/* For local users, run spamfilters and hooks.. */
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if (MyUser(client))
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{
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Hook *tmphook;
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int n;
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if (match_spamfilter(client, topic, SPAMF_TOPIC, "TOPIC", channel->chname, 0, NULL))
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return;
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for (tmphook = Hooks[HOOKTYPE_PRE_LOCAL_TOPIC]; tmphook; tmphook = tmphook->next) {
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topic = (*(tmphook->func.pcharfunc))(client, channel, topic);
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if (!topic)
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return;
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}
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}
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/* At this point 'tnick' is set to client->name.
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* If set::topic-setter nick-user-host; is set
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* then we update it here to nick!user@host.
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*/
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if (iConf.topic_setter == SETTER_NICK_USER_HOST)
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tnick = make_nick_user_host(client->name, client->user->username, GetHost(client));
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}
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/* Set the topic */
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safe_strldup(channel->topic, topic, iConf.topic_length+1);
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safe_strldup(channel->topic_nick, tnick, NICKLEN+USERLEN+HOSTLEN+5);
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if (ttime && !MyUser(client))
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channel->topic_time = ttime;
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else
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channel->topic_time = TStime();
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new_message(client, recv_mtags, &mtags);
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RunHook4(HOOKTYPE_TOPIC, client, channel, mtags, topic);
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sendto_server(client, 0, 0, mtags, ":%s TOPIC %s %s %lld :%s",
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client->id, channel->chname, channel->topic_nick,
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(long long)channel->topic_time, channel->topic);
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sendto_channel(channel, client, NULL, 0, 0, SEND_LOCAL, mtags,
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":%s TOPIC %s :%s",
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client->name, channel->chname, channel->topic);
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free_message_tags(mtags);
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}
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