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
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2010 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
/* $ModDesc: Implements config tags which allow blocking of joins to channels */
class ModuleDenyChannels : public Module
{
public:
ModuleDenyChannels()
{
Implementation eventlist[] = { I_OnUserPreJoin, I_OnRehash };
ServerInstance->Modules->Attach(eventlist, this, 2);
}
ConfigTag* FindBadChan(const std::string& cname)
{
ConfigTagList tags = ServerInstance->Config->ConfTags("badchan");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
if (InspIRCd::Match(cname, i->second->getString("name")))
{
// found a bad channel. Maybe it has a goodchan pattern?
tags = ServerInstance->Config->ConfTags("goodchan");
for (ConfigIter j = tags.first; j != tags.second; ++j)
{
if (InspIRCd::Match(cname, i->second->getString("name")))
return NULL;
}
// nope
return i->second;
}
}
// no <badchan> found
return NULL;
}
virtual void OnRehash(User* user)
{
ConfigReader Conf;
/* 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");
}
ConfigTag* tag = FindBadChan(redirect);
if (tag)
{
/* <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 std::string& cname, std::string &privs, const std::string &keygiven)
{
ConfigTag* tag = FindBadChan(cname);
if (!tag)
return MOD_RES_PASSTHRU;
if (IS_OPER(user) && tag->getBool("allowopers"))
return MOD_RES_PASSTHRU;
std::string reason = tag->getString("reason");
std::string redirect = tag->getString("redirect");
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("redirect"))
{
user->WriteNumeric(926, "%s %s :Channel %s is forbidden, redirecting to %s: %s",user->nick.c_str(),cname.c_str(),cname.c_str(),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.c_str(),cname.c_str(),reason.c_str());
return MOD_RES_DENY;
}
};
MODULE_INIT(ModuleDenyChannels)
|
