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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2005-2007 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2007 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"
/** Holds information on a host set by m_hostchange
*/
class Host
{
public:
enum HostChangeAction
{
HCA_SET,
HCA_SUFFIX,
HCA_ADDNICK
};
HostChangeAction action;
std::string newhost;
std::string ports;
Host(HostChangeAction Action, const std::string& Newhost, const std::string& Ports) :
action(Action), newhost(Newhost), ports(Ports) {}
};
typedef std::vector<std::pair<std::string, Host> > hostchanges_t;
class ModuleHostChange : public Module
{
hostchanges_t hostchanges;
std::string MySuffix;
std::string MyPrefix;
std::string MySeparator;
public:
void init() CXX11_OVERRIDE
{
OnRehash(NULL);
Implementation eventlist[] = { I_OnRehash, I_OnUserConnect };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
void OnRehash(User* user) CXX11_OVERRIDE
{
ConfigTag* host = ServerInstance->Config->ConfValue("host");
MySuffix = host->getString("suffix");
MyPrefix = host->getString("prefix");
MySeparator = host->getString("separator", ".");
hostchanges.clear();
std::set<std::string> dupecheck;
ConfigTagList tags = ServerInstance->Config->ConfTags("hostchange");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
ConfigTag* tag = i->second;
std::string mask = tag->getString("mask");
if (!dupecheck.insert(mask).second)
throw ModuleException("Duplicate hostchange entry: " + mask);
Host::HostChangeAction act;
std::string newhost;
std::string action = tag->getString("action");
if (!strcasecmp(action.c_str(), "set"))
{
act = Host::HCA_SET;
newhost = tag->getString("value");
}
else if (!strcasecmp(action.c_str(), "suffix"))
act = Host::HCA_SUFFIX;
else if (!strcasecmp(action.c_str(), "addnick"))
act = Host::HCA_ADDNICK;
else
throw ModuleException("Invalid hostchange action: " + action);
hostchanges.push_back(std::make_pair(mask, Host(act, newhost, tag->getString("ports"))));
}
}
Version GetVersion() CXX11_OVERRIDE
{
// returns the version number of the module to be
// listed in /MODULES
return Version("Provides masking of user hostnames in a different way to m_cloaking", VF_VENDOR);
}
void OnUserConnect(LocalUser* user) CXX11_OVERRIDE
{
for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
{
if (((InspIRCd::MatchCIDR(user->MakeHost(), i->first)) || (InspIRCd::MatchCIDR(user->MakeHostIP(), i->first))))
{
const Host& h = i->second;
if (!h.ports.empty())
{
irc::portparser portrange(h.ports, false);
long portno = -1;
bool foundany = false;
while ((portno = portrange.GetToken()))
if (portno == user->GetServerPort())
foundany = true;
if (!foundany)
continue;
}
// host of new user matches a hostchange tag's mask
std::string newhost;
if (h.action == Host::HCA_SET)
{
newhost = h.newhost;
}
else if (h.action == Host::HCA_SUFFIX)
{
newhost = MySuffix;
}
else if (h.action == Host::HCA_ADDNICK)
{
// first take their nick and strip out non-dns, leaving just [A-Z0-9\-]
std::string complete;
for (std::string::const_iterator j = user->nick.begin(); j != user->nick.end(); ++j)
{
if (((*j >= 'A') && (*j <= 'Z')) ||
((*j >= 'a') && (*j <= 'z')) ||
((*j >= '0') && (*j <= '9')) ||
(*j == '-'))
{
complete = complete + *j;
}
}
if (complete.empty())
complete = "i-have-a-lame-nick";
if (!MyPrefix.empty())
newhost = MyPrefix + MySeparator + complete;
else
newhost = complete + MySeparator + MySuffix;
}
if (!newhost.empty())
{
user->WriteNotice("Setting your virtual host: " + newhost);
if (!user->ChangeDisplayedHost(newhost.c_str()))
user->WriteNotice("Could not set your virtual host: " + newhost);
return;
}
}
}
}
};
MODULE_INIT(ModuleHostChange)
|
