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
|
/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun 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, either version 3 of the License, or
* any later version.
*
* Anytun 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 anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _SIGNAL_CONTROLLER_H_
#define _SIGNAL_CONTROLLER_H_
#include <map>
#include <queue>
#include "threadUtils.hpp"
#ifndef _MSC_VER
#include <csignal>
#endif
#define SIGERROR -1
class SignalHandler
{
public:
virtual ~SignalHandler() {}
virtual int handle() { return 0; }
virtual int handle(const std::string& msg) { return 0; }
protected:
SignalHandler(int s) : sigNum(s) {}
private:
int sigNum;
friend class SignalController;
};
class SigErrorHandler : public SignalHandler
{
public:
SigErrorHandler() : SignalHandler(SIGERROR) {}
int handle(const std::string& msg);
};
#ifndef _MSC_VER
class SigIntHandler : public SignalHandler
{
public:
SigIntHandler() : SignalHandler(SIGINT) {}
int handle();
};
class SigQuitHandler : public SignalHandler
{
public:
SigQuitHandler() : SignalHandler(SIGQUIT) {}
int handle();
};
class SigHupHandler : public SignalHandler
{
public:
SigHupHandler() : SignalHandler(SIGHUP) {}
int handle();
};
class SigUsr1Handler : public SignalHandler
{
public:
SigUsr1Handler() : SignalHandler(SIGUSR1) {}
int handle();
};
class SigUsr2Handler : public SignalHandler
{
public:
SigUsr2Handler() : SignalHandler(SIGUSR2) {}
int handle();
};
class SigTermHandler : public SignalHandler
{
public:
SigTermHandler() : SignalHandler(SIGTERM) {}
int handle();
};
#else
class CtrlCHandler : public SignalHandler
{
public:
CtrlCHandler() : SignalHandler(CTRL_C_EVENT) {}
int handle();
};
class CtrlBreakHandler : public SignalHandler
{
public:
CtrlBreakHandler() : SignalHandler(CTRL_BREAK_EVENT) {}
int handle();
};
class CtrlCloseHandler : public SignalHandler
{
public:
CtrlCloseHandler() : SignalHandler(CTRL_BREAK_EVENT) {}
int handle();
};
class CtrlLogoffHandler : public SignalHandler
{
public:
CtrlLogoffHandler() : SignalHandler(CTRL_BREAK_EVENT) {}
int handle();
};
class CtrlShutdownHandler : public SignalHandler
{
public:
CtrlShutdownHandler() : SignalHandler(CTRL_BREAK_EVENT) {}
int handle();
};
#endif
class SignalController
{
public:
static SignalController& instance();
#ifndef _MSC_VER
void handle();
#else
static bool handle(DWORD ctrlType);
#endif
void init();
int run();
void inject(int sig, const std::string& msg = "");
private:
typedef std::map<int, SignalHandler*> HandlerMap;
SignalController() {};
~SignalController();
SignalController(const SignalController &s);
void operator=(const SignalController &s);
static SignalController* inst;
static Mutex instMutex;
class instanceCleaner {
public: ~instanceCleaner() {
if(SignalController::inst != NULL)
delete SignalController::inst;
}
};
friend class instanceCleaner;
typedef std::pair<int, std::string> SigPair;
std::queue<SigPair> sigQueue;
Mutex sigQueueMutex;
Semaphore sigQueueSem;
HandlerMap handler;
};
extern SignalController& gSignalController;
#endif
|
