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
|
/*
* �Anytun
*
* �Anytun is a tiny implementation of SATP. Unlike Anytun which is a full
* featured implementation �Anytun has no support for multiple connections
* or synchronisation. It is a small single threaded implementation intended
* to act as a client on small platforms.
* 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 Christian Pointner <equinox@anytun.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 version 3 as
* published by the Free Software Foundation.
*
* �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/>.
*/
#include "datatypes.h"
#include "log.h"
#include "signal.h"
#include <signal.h>
volatile sig_atomic_t signal_exit = 0;
void signal_init()
{
signal(SIGINT, handle_signal_exit);
signal(SIGQUIT, handle_signal_exit);
signal(SIGTERM, handle_signal_exit);
signal(SIGHUP, handle_signal);
signal(SIGUSR1, handle_signal);
signal(SIGUSR2, handle_signal);
}
void handle_signal(int sig)
{
switch(sig) {
case SIGHUP: log_printf(NOTICE, "SIG-Hup caught"); break;
case SIGUSR1: log_printf(NOTICE, "SIG-Usr1 caught"); break;
case SIGUSR2: log_printf(NOTICE, "SIG-Usr2 caught"); break;
default: log_printf(NOTICE, "Signal %d caught, ignoring", sig); break;
}
}
void handle_signal_exit(int sig)
{
switch(sig) {
case SIGINT: log_printf(NOTICE, "SIG-Int caught, exiting"); break;
case SIGQUIT: log_printf(NOTICE, "SIG-Quit caught, exiting"); break;
case SIGTERM: log_printf(NOTICE, "SIG-Term caught, exiting"); break;
default: log_printf(NOTICE, "Signal %d caught, ignoring", sig); return;
}
if (signal_exit)
raise (sig);
signal_exit = 1;
// do cleanup here
signal (sig, SIG_DFL);
raise (sig);
}
|
