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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020 Michael <michaelhazell@hotmail.com>
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
* Copyright (C) 2013, 2017-2018, 2020, 2022 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2013, 2016 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009 John Brooks <special@inspircd.org>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006, 2010 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2005, 2008 Robin Burchell <robin+git@viroteck.net>
*
* 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 "xline.h"
#include "modules/stats.h"
enum
{
// InspIRCd-specific.
ERR_BADCHANNEL = 926
};
/** Holds a CBAN item
*/
class CBan final
: public XLine
{
private:
std::string matchtext;
public:
CBan(time_t s_time, unsigned long d, const std::string& src, const std::string& re, const std::string& ch)
: XLine(s_time, d, src, re, "CBAN")
, matchtext(ch)
{
}
// XXX I shouldn't have to define this
bool Matches(User* u) override
{
return false;
}
bool Matches(const std::string& s) override
{
return InspIRCd::Match(s, matchtext);
}
const std::string& Displayable() override
{
return matchtext;
}
};
/** An XLineFactory specialized to generate cban pointers
*/
class CBanFactory final
: public XLineFactory
{
public:
CBanFactory()
: XLineFactory("CBAN")
{
}
XLine* Generate(time_t set_time, unsigned long duration, const std::string& source, const std::string& reason, const std::string& xline_specific_mask) override
{
return new CBan(set_time, duration, source, reason, xline_specific_mask);
}
bool AutoApplyToUserList(XLine* x) override
{
return false; // No, we apply to channels.
}
};
class CommandCBan final
: public Command
{
public:
CommandCBan(Module* Creator)
: Command(Creator, "CBAN", 1, 3)
{
access_needed = CmdAccess::OPERATOR;
syntax = { "<channelmask> [<duration> [:<reason>]]" };
}
CmdResult Handle(User* user, const Params& parameters) override
{
/* syntax: CBAN #channel time :reason goes here */
/* 'time' is a human-readable timestring, like 2d3h2s. */
if (parameters.size() == 1)
{
std::string reason;
if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "CBAN", reason, user))
{
ServerInstance->SNO.WriteToSnoMask('x', "%s removed CBan on %s: %s", user->nick.c_str(), parameters[0].c_str(), reason.c_str());
}
else
{
user->WriteNotice("*** CBan " + parameters[0] + " not found on the list.");
return CmdResult::FAILURE;
}
}
else
{
// Adding - XXX todo make this respect <insane> tag perhaps..
unsigned long duration;
if (!InspIRCd::Duration(parameters[1], duration))
{
user->WriteNotice("*** Invalid duration for CBan.");
return CmdResult::FAILURE;
}
const char* reason = (parameters.size() > 2) ? parameters[2].c_str() : "No reason supplied";
auto r = new CBan(ServerInstance->Time(), duration, user->nick, reason, parameters[0]);
if (ServerInstance->XLines->AddLine(r, user))
{
if (!duration)
{
ServerInstance->SNO.WriteToSnoMask('x', "%s added a permanent CBan on %s: %s", user->nick.c_str(), parameters[0].c_str(), reason);
}
else
{
ServerInstance->SNO.WriteToSnoMask('x', "%s added a timed CBan on %s, expires in %s (on %s): %s",
user->nick.c_str(), parameters[0].c_str(), InspIRCd::DurationString(duration).c_str(),
InspIRCd::TimeString(ServerInstance->Time() + duration).c_str(), reason);
}
}
else
{
delete r;
user->WriteNotice("*** CBan for " + parameters[0] + " already exists");
return CmdResult::FAILURE;
}
}
return CmdResult::SUCCESS;
}
};
class ModuleCBan final
: public Module
, public Stats::EventListener
{
CommandCBan mycommand;
CBanFactory f;
public:
ModuleCBan()
: Module(VF_VENDOR | VF_COMMON, "Adds the /CBAN command which allows server operators to prevent channels matching a glob from being created.")
, Stats::EventListener(this)
, mycommand(this)
{
}
void init() override
{
ServerInstance->XLines->RegisterFactory(&f);
}
~ModuleCBan() override
{
ServerInstance->XLines->DelAll("CBAN");
ServerInstance->XLines->UnregisterFactory(&f);
}
ModResult OnStats(Stats::Context& stats) override
{
if (stats.GetSymbol() != 'C')
return MOD_RES_PASSTHRU;
ServerInstance->XLines->InvokeStats("CBAN", stats);
return MOD_RES_DENY;
}
ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven, bool override) override
{
if (override)
return MOD_RES_PASSTHRU;
XLine* rl = ServerInstance->XLines->MatchesLine("CBAN", cname);
if (rl)
{
// Channel is banned.
user->WriteNumeric(ERR_BADCHANNEL, cname, InspIRCd::Format("Channel %s is CBANed: %s", cname.c_str(), rl->reason.c_str()));
ServerInstance->SNO.WriteGlobalSno('a', "%s tried to join %s which is CBANed (%s)",
user->nick.c_str(), cname.c_str(), rl->reason.c_str());
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
void GetLinkData(LinkData& data, std::string& compatdata) override
{
// It is assumed that if a server can speak the v4 protocol it can also
// handle glob patterns for channel bans.
compatdata.assign("glob");
}
};
MODULE_INIT(ModuleCBan)
|
