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1108b5895145de2f522d59603733b3240eb2f51a
unrealircd/src/modules/m_topic.c
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Bram Matthys 1a4cbb7023 sendnumeric() - phase 2
2019-05-22 11:41:46 +02:00

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/*
* IRC - Internet Relay Chat, src/modules/m_topic.c
* (C) 2004 The UnrealIRCd Team
*
* 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.
*/
#include "unrealircd.h"
CMD_FUNC(m_topic);
#define MSG_TOPIC "TOPIC"
ModuleHeader MOD_HEADER(m_topic)
= {
"m_topic",
"4.2",
"command /topic",
"3.2-b8-1",
NULL
};
MOD_INIT(m_topic)
{
CommandAdd(modinfo->handle, MSG_TOPIC, m_topic, 4, M_USER|M_SERVER);
MARK_AS_OFFICIAL_MODULE(modinfo);
return MOD_SUCCESS;
}
MOD_LOAD(m_topic)
{
return MOD_SUCCESS;
}
MOD_UNLOAD(m_topic)
{
return MOD_SUCCESS;
}
void topicoverride(aClient *sptr, aChannel *chptr, char *topic)
{
sendto_snomask(SNO_EYES,
"*** OperOverride -- %s (%s@%s) TOPIC %s \'%s\'",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, topic);
/* Logging implementation added by XeRXeS */
ircd_log(LOG_OVERRIDE, "OVERRIDE: %s (%s@%s) TOPIC %s \'%s\'",
sptr->name, sptr->user->username, sptr->user->realhost,
chptr->chname, topic);
}
/*
** m_topic
** parv[1] = topic text
**
** For servers using TS: (Lefler)
** parv[1] = channel name
** parv[2] = topic nickname
** parv[3] = topic time
** parv[4] = topic text
*/
CMD_FUNC(m_topic)
{
aChannel *chptr = NullChn;
char *topic = NULL, *name, *tnick = sptr->name;
TS ttime = 0;
int i = 0;
Hook *h;
int ismember; /* cache: IsMember() */
long flags = 0; /* cache: membership flags */
MessageTag *mtags = NULL;
if (parc < 2)
{
sendnumeric(sptr, ERR_NEEDMOREPARAMS, "TOPIC");
return 0;
}
name = parv[1];
if (name && IsChannelName(name))
{
chptr = find_channel(parv[1], NullChn);
if (!chptr)
{
if (!MyClient(sptr) && !IsULine(sptr))
{
sendto_snomask
(SNO_JUNK,"Remote TOPIC for unknown channel %s (%s)",
parv[1], backupbuf);
}
sendnumeric(sptr, ERR_NOSUCHCHANNEL, name);
return 0;
}
ismember = IsMember(sptr, chptr); /* CACHE */
if (ismember)
flags = get_access(sptr, chptr); /* CACHE */
if (parc > 2 || SecretChannel(chptr))
{
if (!ismember && !IsServer(sptr)
&& !ValidatePermissionsForPath("channel:see:list:secret",sptr,NULL,chptr,NULL) && !IsULine(sptr))
{
sendnumeric(sptr, ERR_NOTONCHANNEL, name);
return 0;
}
if (parc > 2)
topic = parv[2];
}
if (parc > 4)
{
tnick = parv[2];
ttime = atol(parv[3]);
topic = parv[4];
}
if (!topic) /* only asking for topic */
{
if (IsServer(sptr))
return 0; /* Servers must maintain state, not ask */
for (h = Hooks[HOOKTYPE_VIEW_TOPIC_OUTSIDE_CHANNEL]; h; h = h->next)
{
i = (*(h->func.intfunc))(sptr,chptr);
if (i != HOOK_CONTINUE)
break;
}
/* If you're not a member, and you can't view outside channel, deny */
if ((!ismember && i == HOOK_DENY) || (is_banned(sptr,chptr,BANCHK_JOIN) && !ValidatePermissionsForPath("channel:see:topic",sptr,NULL,chptr,NULL)))
{
sendnumeric(sptr, ERR_NOTONCHANNEL, name);
return 0;
}
if (!chptr->topic)
sendnumeric(sptr, RPL_NOTOPIC, chptr->chname);
else
{
sendnumeric(sptr, RPL_TOPIC,
chptr->chname, chptr->topic);
sendnumeric(sptr, RPL_TOPICWHOTIME, chptr->chname,
chptr->topic_nick, chptr->topic_time);
}
}
else if (ttime && topic && (IsServer(sptr)
|| IsULine(sptr)))
{
if (!chptr->topic_time || ttime > chptr->topic_time || IsULine(sptr))
/* The IsUline is to allow services to use an old TS. Apparently
* some services do this in their topic enforcement -- codemastr
*/
{
/* Set the topic */
safestrldup(chptr->topic, topic, iConf.topic_length+1);
safestrldup(chptr->topic_nick, tnick, NICKLEN+USERLEN+HOSTLEN+5);
chptr->topic_time = ttime;
RunHook4(HOOKTYPE_TOPIC, cptr, sptr, chptr, topic);
new_message(sptr, recv_mtags, &mtags);
sendto_server(cptr, PROTO_SID, 0, mtags, ":%s TOPIC %s %s %lu :%s",
ID(sptr), chptr->chname, chptr->topic_nick,
chptr->topic_time, chptr->topic);
sendto_server(cptr, 0, PROTO_SID, mtags, ":%s TOPIC %s %s %lu :%s",
sptr->name, chptr->chname, chptr->topic_nick,
chptr->topic_time, chptr->topic);
sendto_channel(chptr, sptr, NULL, 0, 0, SEND_LOCAL, mtags,
":%s TOPIC %s :%s",
sptr->name, chptr->chname, chptr->topic);
free_mtags(mtags);
}
}
else if (((chptr->mode.mode & MODE_TOPICLIMIT) == 0 ||
(is_chan_op(sptr, chptr)) || ValidatePermissionsForPath("channel:override:topic",sptr,NULL,chptr,NULL)
|| is_halfop(sptr, chptr)) && topic)
{
/* setting a topic */
if (chptr->mode.mode & MODE_TOPICLIMIT)
{
if (!is_halfop(sptr, chptr) && !IsULine(sptr) && !
is_chan_op(sptr, chptr))
{
#ifndef NO_OPEROVERRIDE
if (!ValidatePermissionsForPath("channel:override:topic",sptr,NULL,chptr,NULL))
{
#endif
sendnumeric(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
return 0;
#ifndef NO_OPEROVERRIDE
}
else
topicoverride(sptr, chptr, topic);
#endif
}
} else
if (MyClient(sptr) && !is_chan_op(sptr, chptr) && !is_halfop(sptr, chptr) && is_banned(sptr, chptr, BANCHK_MSG))
{
char buf[512];
if (ValidatePermissionsForPath("channel:override:topic",sptr,NULL,chptr,NULL))
{
topicoverride(sptr, chptr, topic);
} else {
ircsnprintf(buf, sizeof(buf), "You cannot change the topic on %s while being banned", chptr->chname);
sendnumeric(sptr, ERR_CANNOTDOCOMMAND, "TOPIC", buf);
return -1;
}
} else
if (MyClient(sptr) && ((flags&CHFL_OVERLAP) == 0) && (chptr->mode.mode & MODE_MODERATED))
{
char buf[512];
if (ValidatePermissionsForPath("channel:override:topic",sptr,NULL,chptr,NULL))
{
topicoverride(sptr, chptr, topic);
} else {
/* With +m and -t, only voice and higher may change the topic */
ircsnprintf(buf, sizeof(buf), "Voice (+v) or higher is required in order to change the topic on %s (channel is +m)", chptr->chname);
sendnumeric(sptr, ERR_CANNOTDOCOMMAND, "TOPIC", buf);
return -1;
}
}
/* ready to set... */
if (MyClient(sptr))
{
Hook *tmphook;
int n;
if ((n = dospamfilter(sptr, topic, SPAMF_TOPIC, chptr->chname, 0, NULL)) < 0)
return n;
for (tmphook = Hooks[HOOKTYPE_PRE_LOCAL_TOPIC]; tmphook; tmphook = tmphook->next) {
topic = (*(tmphook->func.pcharfunc))(sptr, chptr, topic);
if (!topic)
return 0;
}
RunHook4(HOOKTYPE_LOCAL_TOPIC, cptr, sptr, chptr, topic);
}
/* At this point 'tnick' is set to sptr->name.
* If set::topic-setter nick-user-host; is set
* then we update it here to nick!user@host.
*/
if (IsPerson(sptr) && (iConf.topic_setter == SETTER_NICK_USER_HOST))
tnick = make_nick_user_host(sptr->name, sptr->user->username, GetHost(sptr));
/* Set the topic */
safestrldup(chptr->topic, topic, iConf.topic_length+1);
safestrldup(chptr->topic_nick, tnick, NICKLEN+USERLEN+HOSTLEN+5);
RunHook4(HOOKTYPE_TOPIC, cptr, sptr, chptr, topic);
if (ttime && IsServer(cptr))
chptr->topic_time = ttime;
else
chptr->topic_time = TStime();
new_message(sptr, recv_mtags, &mtags);
sendto_server(cptr, 0, 0, mtags, ":%s TOPIC %s %s %lu :%s",
sptr->name, chptr->chname, chptr->topic_nick,
chptr->topic_time, chptr->topic);
sendto_channel(chptr, sptr, NULL, 0, 0, SEND_LOCAL, mtags,
":%s TOPIC %s :%s",
sptr->name, chptr->chname, chptr->topic);
free_mtags(mtags);
}
else
{
sendnumeric(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
}
}
return 0;
}
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