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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2005 Craig Edwards <craigedwards@brainbox.cc>
*
* 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"
/* $ModDesc: Implements config tags which allow blocking of joins to channels */
class ModuleDenyChannels : public Module
{
public:
void init()
{
Implementation eventlist[] = { I_OnUserPreJoin, I_OnRehash };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
virtual void OnRehash(User* user)
{
/* check for redirect validity and loops/chains */
ConfigTagList tags = ServerInstance->Config->ConfTags("badchan");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
std::string name = i->second->getString("name");
std::string redirect = i->second->getString("redirect");
if (!redirect.empty())
{
if (!ServerInstance->IsChannel(redirect.c_str(), ServerInstance->Config->Limits.ChanMax))
{
if (user)
user->WriteServ("NOTICE %s :Invalid badchan redirect '%s'", user->nick.c_str(), redirect.c_str());
throw ModuleException("Invalid badchan redirect, not a channel");
}
for (ConfigIter j = tags.first; j != tags.second; ++j)
{
if (InspIRCd::Match(redirect, j->second->getString("name")))
{
bool goodchan = false;
ConfigTagList goodchans = ServerInstance->Config->ConfTags("badchan");
for (ConfigIter k = goodchans.first; k != goodchans.second; ++k)
{
if (InspIRCd::Match(redirect, k->second->getString("name")))
goodchan = true;
}
if (!goodchan)
{
/* <badchan:redirect> is a badchan */
if (user)
user->WriteServ("NOTICE %s :Badchan %s redirects to badchan %s", user->nick.c_str(), name.c_str(), redirect.c_str());
throw ModuleException("Badchan redirect loop");
}
}
}
}
}
}
virtual ~ModuleDenyChannels()
{
}
virtual Version GetVersion()
{
return Version("Implements config tags which allow blocking of joins to channels", VF_VENDOR);
}
virtual ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
{
ConfigTagList tags = ServerInstance->Config->ConfTags("badchan");
for (ConfigIter j = tags.first; j != tags.second; ++j)
{
if (InspIRCd::Match(cname, j->second->getString("name")))
{
if (IS_OPER(user) && j->second->getBool("allowopers"))
{
return MOD_RES_PASSTHRU;
}
else
{
std::string reason = j->second->getString("reason");
std::string redirect = j->second->getString("redirect");
ConfigTagList goodchans = ServerInstance->Config->ConfTags("goodchan");
for (ConfigIter i = goodchans.first; i != goodchans.second; ++i)
{
if (InspIRCd::Match(cname, i->second->getString("name")))
{
return MOD_RES_PASSTHRU;
}
}
if (ServerInstance->IsChannel(redirect.c_str(), ServerInstance->Config->Limits.ChanMax))
{
/* simple way to avoid potential loops: don't redirect to +L channels */
Channel *newchan = ServerInstance->FindChan(redirect);
if ((!newchan) || (!(newchan->IsModeSet('L'))))
{
user->WriteNumeric(926, "%s %s :Channel %s is forbidden, redirecting to %s: %s",user->nick.c_str(),cname,cname,redirect.c_str(), reason.c_str());
Channel::JoinUser(user,redirect.c_str(),false,"",false,ServerInstance->Time());
return MOD_RES_DENY;
}
}
user->WriteNumeric(926, "%s %s :Channel %s is forbidden: %s",user->nick.c_str(),cname,cname,reason.c_str());
return MOD_RES_DENY;
}
}
}
return MOD_RES_PASSTHRU;
}
};
MODULE_INIT(ModuleDenyChannels)
|
