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Diffstat (limited to 'src/signal.c')
-rw-r--r-- | src/signal.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/signal.c b/src/signal.c new file mode 100644 index 0000000..bb42331 --- /dev/null +++ b/src/signal.c @@ -0,0 +1,80 @@ +/* + * ľAnytun + * + * ľAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation ľAnytun 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 ľAnytun. + * + * ľAnytun 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. + * + * ľAnytun 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 ľAnytun. If not, see <http://www.gnu.org/licenses/>. + */ + +#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); +} + |