1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2013, 2017-2021 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2004, 2006 Craig Edwards <brain@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "modules/exemption.h"
#include "modules/extban.h"
#include "numerichelper.h"
class ModuleNoCTCP final
: public Module
{
private:
CheckExemption::EventProvider exemptionprov;
ExtBan::Acting extban;
SimpleChannelMode nc;
SimpleUserMode ncu;
public:
ModuleNoCTCP()
: Module(VF_VENDOR, "Adds channel mode C (noctcp) which allows channels to block messages which contain CTCPs and user mode T (u_noctcp) which allows users to block private messages that contain CTCPs.")
, exemptionprov(this)
, extban(this, "noctcp", 'C')
, nc(this, "noctcp", 'C')
, ncu(this, "u_noctcp", 'T')
{
}
ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) override
{
if (!IS_LOCAL(user))
return MOD_RES_PASSTHRU;
std::string_view ctcpname;
if (!details.IsCTCP(ctcpname) || irc::equals(ctcpname, "ACTION"))
return MOD_RES_PASSTHRU;
switch (target.type)
{
case MessageTarget::TYPE_CHANNEL:
{
if (user->HasPrivPermission("channels/ignore-noctcp"))
return MOD_RES_PASSTHRU;
Channel* c = target.Get<Channel>();
for (const auto& [u, _] : c->GetUsers())
{
if (u->IsModeSet(ncu))
details.exemptions.insert(u);
}
ModResult res = exemptionprov.Check(user, c, "noctcp");
if (res == MOD_RES_ALLOW)
return MOD_RES_PASSTHRU;
if (c->IsModeSet(nc))
{
user->WriteNumeric(Numerics::CannotSendTo(c, "CTCPs", &nc));
return MOD_RES_DENY;
}
if (extban.GetStatus(user, c) == MOD_RES_DENY)
{
user->WriteNumeric(Numerics::CannotSendTo(c, "CTCPs", 'C', "noctcp"));
return MOD_RES_DENY;
}
break;
}
case MessageTarget::TYPE_USER:
{
if (user->HasPrivPermission("users/ignore-noctcp"))
return MOD_RES_PASSTHRU;
User* u = target.Get<User>();
if (u->IsModeSet(ncu))
{
user->WriteNumeric(Numerics::CannotSendTo(u, "CTCPs", &ncu));
return MOD_RES_DENY;
}
break;
}
case MessageTarget::TYPE_SERVER:
{
if (user->HasPrivPermission("users/ignore-noctcp"))
return MOD_RES_PASSTHRU;
for (auto* u : ServerInstance->Users.GetLocalUsers())
{
if (u->IsModeSet(ncu))
details.exemptions.insert(u);
}
break;
}
}
return MOD_RES_PASSTHRU;
}
};
MODULE_INIT(ModuleNoCTCP)
|
