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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2007-2008 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"
#include "modules/ssl.h"
enum
{
// From ircd-ratbox.
RPL_REDIR = 10
};
/** Handle /JUMPSERVER
*/
class CommandJumpserver : public Command
{
public:
bool redirect_new_users;
std::string redirect_to;
std::string reason;
int port;
int sslport;
CommandJumpserver(Module* Creator) : Command(Creator, "JUMPSERVER", 0, 4)
{
flags_needed = 'o';
syntax = "[<server> <port>[:<sslport>] <+/-an> <reason>]";
port = 0;
sslport = 0;
redirect_new_users = false;
}
CmdResult Handle(const std::vector<std::string>& parameters, User* user) CXX11_OVERRIDE
{
int n_done = 0;
reason = (parameters.size() < 4) ? "Please use this server/port instead" : parameters[3];
bool redirect_all_immediately = false;
redirect_new_users = true;
bool direction = true;
std::string n_done_s;
/* No parameters: jumpserver disabled */
if (!parameters.size())
{
if (port)
user->WriteNotice("*** Disabled jumpserver (previously set to '" + redirect_to + ":" + ConvToStr(port) + "')");
else
user->WriteNotice("*** Jumpserver was not enabled.");
port = 0;
sslport = 0;
redirect_to.clear();
return CMD_SUCCESS;
}
port = 0;
redirect_to.clear();
if (parameters.size() >= 3)
{
for (std::string::const_iterator n = parameters[2].begin(); n != parameters[2].end(); ++n)
{
switch (*n)
{
case '+':
direction = true;
break;
case '-':
direction = false;
break;
case 'a':
redirect_all_immediately = direction;
break;
case 'n':
redirect_new_users = direction;
break;
default:
user->WriteNotice("*** Invalid JUMPSERVER flag: " + ConvToStr(*n));
return CMD_FAILURE;
break;
}
}
size_t delimpos = parameters[1].find(':');
port = ConvToInt(parameters[1].substr(0, delimpos ? delimpos : std::string::npos));
sslport = (delimpos == std::string::npos ? 0 : ConvToInt(parameters[1].substr(delimpos + 1)));
if (parameters[1].find_first_not_of("0123456789:") != std::string::npos
|| parameters[1].rfind(':') != delimpos
|| port > 65535 || sslport > 65535)
{
user->WriteNotice("*** Invalid port number");
return CMD_FAILURE;
}
if (redirect_all_immediately)
{
/* Redirect everyone but the oper sending the command */
const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
for (UserManager::LocalList::const_iterator i = list.begin(); i != list.end(); )
{
// Quitting the user removes it from the list
LocalUser* t = *i;
++i;
if (!t->IsOper())
{
t->WriteNumeric(RPL_REDIR, parameters[0], GetPort(t), "Please use this Server/Port instead");
ServerInstance->Users->QuitUser(t, reason);
n_done++;
}
}
if (n_done)
{
n_done_s = ConvToStr(n_done);
}
}
if (redirect_new_users)
redirect_to = parameters[0];
user->WriteNotice("*** Set jumpserver to server '" + parameters[0] + "' port '" + (port ? ConvToStr(port) : "Auto") + ", SSL " + (sslport ? ConvToStr(sslport) : "Auto") + "', flags '+" +
(redirect_all_immediately ? "a" : "") + (redirect_new_users ? "n'" : "'") +
(n_done ? " (" + n_done_s + "user(s) redirected): " : ": ") + reason);
}
return CMD_SUCCESS;
}
int GetPort(LocalUser* user)
{
int p = (SSLIOHook::IsSSL(&user->eh) ? sslport : port);
if (p == 0)
p = user->GetServerPort();
return p;
}
};
class ModuleJumpServer : public Module
{
CommandJumpserver js;
public:
ModuleJumpServer() : js(this)
{
}
ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
{
if (js.redirect_new_users)
{
int port = js.GetPort(user);
user->WriteNumeric(RPL_REDIR, js.redirect_to, port, "Please use this Server/Port instead");
ServerInstance->Users->QuitUser(user, js.reason);
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
// Emergency way to unlock
if (!status.srcuser)
js.redirect_new_users = false;
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Provides support for the RPL_REDIR numeric and the /JUMPSERVER command.", VF_VENDOR);
}
};
MODULE_INIT(ModuleJumpServer)
|
