/*
tincd.c -- the main file for tincd
- Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
- 2000 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 1998-2005 Ivo Timmermans
+ 2000-2006 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: tincd.c,v 1.10.4.20 2000/10/29 22:10:44 guus Exp $
+ $Id$
*/
-#include "config.h"
+#include "system.h"
+
+/* Darwin (MacOS/X) needs the following definition... */
+#ifndef _P1003_1B_VISIBLE
+#define _P1003_1B_VISIBLE
+#endif
+
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
-#include <errno.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <signal.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <syslog.h>
-#include <unistd.h>
-#include <signal.h>
#include <openssl/rand.h>
#include <openssl/rsa.h>
-#include <openssl/err.h>
-#include <string.h>
+#include <openssl/pem.h>
+#include <openssl/evp.h>
+#include <openssl/engine.h>
-#ifdef HAVE_SYS_IOCTL_H
-# include <sys/ioctl.h>
+#ifdef HAVE_LZO_LZO1X_H
+#include <lzo/lzo1x.h>
+#endif
+#ifdef HAVE_LZO1X_H
+#include <lzo1x.h>
#endif
-#include <pidfile.h>
-#include <utils.h>
-#include <xalloc.h>
+#include <getopt.h>
+#include "pidfile.h"
#include "conf.h"
+#include "device.h"
+#include "logger.h"
#include "net.h"
#include "netutl.h"
+#include "process.h"
#include "protocol.h"
-#include "subnet.h"
-
-#include "system.h"
+#include "utils.h"
+#include "xalloc.h"
/* The name this program was run with. */
-char *program_name;
+char *program_name = NULL;
/* If nonzero, display usage information and exit. */
-static int show_help;
+bool show_help = false;
/* If nonzero, print the version on standard output and exit. */
-static int show_version;
+bool show_version = false;
/* If nonzero, it will attempt to kill a running tincd and exit. */
-static int kill_tincd = 0;
-
-/* If zero, don't detach from the terminal. */
-static int do_detach = 1;
+int kill_tincd = 0;
/* If nonzero, generate public/private keypair for this host/net. */
-static int generate_keys = 0;
-
-char *identname; /* program name for syslog */
-char *pidfilename; /* pid file location */
-static pid_t ppid; /* pid of non-detached part */
-char **g_argv; /* a copy of the cmdline arguments */
-
-void cleanup_and_exit(int);
-int detach(void);
-int kill_other(void);
-void make_names(void);
-RETSIGTYPE parent_exit(int a);
-void setup_signals(void);
-int write_pidfile(void);
-
-static struct option const long_options[] =
-{
- { "kill", no_argument, NULL, 'k' },
- { "net", required_argument, NULL, 'n' },
- { "help", no_argument, &show_help, 1 },
- { "version", no_argument, &show_version, 1 },
- { "no-detach", no_argument, &do_detach, 0 },
- { "keygen", optional_argument, NULL, 'K'},
- { NULL, 0, NULL, 0 }
+int generate_keys = 0;
+
+/* If nonzero, use null ciphers and skip all key exchanges. */
+bool bypass_security = false;
+
+/* If nonzero, disable swapping for this process. */
+bool do_mlock = false;
+
+/* If nonzero, write log entries to a separate file. */
+bool use_logfile = false;
+
+char *identname = NULL; /* program name for syslog */
+char *pidfilename = NULL; /* pid file location */
+char *logfilename = NULL; /* log file location */
+char **g_argv; /* a copy of the cmdline arguments */
+
+static int status;
+
+static struct option const long_options[] = {
+ {"config", required_argument, NULL, 'c'},
+ {"kill", optional_argument, NULL, 'k'},
+ {"net", required_argument, NULL, 'n'},
+ {"help", no_argument, NULL, 1},
+ {"version", no_argument, NULL, 2},
+ {"no-detach", no_argument, NULL, 'D'},
+ {"generate-keys", optional_argument, NULL, 'K'},
+ {"debug", optional_argument, NULL, 'd'},
+ {"bypass-security", no_argument, NULL, 3},
+ {"mlock", no_argument, NULL, 'L'},
+ {"logfile", optional_argument, NULL, 4},
+ {"pidfile", required_argument, NULL, 5},
+ {NULL, 0, NULL, 0}
};
-static void
-usage(int status)
+#ifdef HAVE_MINGW
+static struct WSAData wsa_state;
+#endif
+
+static void usage(bool status)
{
- if(status != 0)
- fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
- else
- {
- printf(_("Usage: %s [option]...\n\n"), program_name);
- printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
- " -D, --no-detach Don't fork and detach.\n"
- " -d Increase debug level.\n"
- " -k, --kill Attempt to kill a running tincd and exit.\n"
- " -n, --net=NETNAME Connect to net NETNAME.\n"));
- printf(_(" -K, --keygen[=BITS] Generate public/private RSA keypair.\n"
- " --help Display this help and exit.\n"
- " --version Output version information and exit.\n\n"));
- printf(_("Report bugs to tinc@nl.linux.org.\n"));
- }
- exit(status);
+ if(status)
+ fprintf(stderr, _("Try `%s --help\' for more information.\n"),
+ program_name);
+ else {
+ printf(_("Usage: %s [option]...\n\n"), program_name);
+ printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
+ " -D, --no-detach Don't fork and detach.\n"
+ " -d, --debug[=LEVEL] Increase debug level or set it to LEVEL.\n"
+ " -k, --kill[=SIGNAL] Attempt to kill a running tincd and exit.\n"
+ " -n, --net=NETNAME Connect to net NETNAME.\n"
+ " -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
+ " -L, --mlock Lock tinc into main memory.\n"
+ " --logfile[=FILENAME] Write log entries to a logfile.\n"
+ " --pidfile=FILENAME Write PID to FILENAME.\n"
+ " --help Display this help and exit.\n"
+ " --version Output version information and exit.\n\n"));
+ printf(_("Report bugs to tinc@tinc-vpn.org.\n"));
+ }
}
-void
-parse_options(int argc, char **argv, char **envp)
+static bool parse_options(int argc, char **argv)
{
- int r;
- int option_index = 0;
-
- while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
- {
- switch(r)
- {
- case 0: /* long option */
- break;
- case 'c': /* config file */
- confbase = xmalloc(strlen(optarg)+1);
- strcpy(confbase, optarg);
- break;
- case 'D': /* no detach */
- do_detach = 0;
- break;
- case 'd': /* inc debug level */
- debug_lvl++;
- break;
- case 'k': /* kill old tincds */
- kill_tincd = 1;
- break;
- case 'n': /* net name given */
- netname = xmalloc(strlen(optarg)+1);
- strcpy(netname, optarg);
- break;
- case 'K': /* generate public/private keypair */
- if(optarg)
- {
- generate_keys = atoi(optarg);
- if(generate_keys < 512)
- {
- fprintf(stderr, _("Invalid argument! BITS must be a number equal to or greater than 512.\n"));
- usage(1);
- }
- generate_keys &= ~7; /* Round it to bytes */
- }
- else
- generate_keys = 1024;
- break;
- case '?':
- usage(1);
- default:
- break;
- }
- }
+ int r;
+ int option_index = 0;
+
+ while((r = getopt_long(argc, argv, "c:DLd::k::n:K::", long_options, &option_index)) != EOF) {
+ switch (r) {
+ case 0: /* long option */
+ break;
+
+ case 'c': /* config file */
+ confbase = xstrdup(optarg);
+ break;
+
+ case 'D': /* no detach */
+ do_detach = false;
+ break;
+
+ case 'L': /* no detach */
+ do_mlock = true;
+ break;
+
+ case 'd': /* inc debug level */
+ if(optarg)
+ debug_level = atoi(optarg);
+ else
+ debug_level++;
+ break;
+
+ case 'k': /* kill old tincds */
+#ifndef HAVE_MINGW
+ if(optarg) {
+ if(!strcasecmp(optarg, "HUP"))
+ kill_tincd = SIGHUP;
+ else if(!strcasecmp(optarg, "TERM"))
+ kill_tincd = SIGTERM;
+ else if(!strcasecmp(optarg, "KILL"))
+ kill_tincd = SIGKILL;
+ else if(!strcasecmp(optarg, "USR1"))
+ kill_tincd = SIGUSR1;
+ else if(!strcasecmp(optarg, "USR2"))
+ kill_tincd = SIGUSR2;
+ else if(!strcasecmp(optarg, "WINCH"))
+ kill_tincd = SIGWINCH;
+ else if(!strcasecmp(optarg, "INT"))
+ kill_tincd = SIGINT;
+ else if(!strcasecmp(optarg, "ALRM"))
+ kill_tincd = SIGALRM;
+ else {
+ kill_tincd = atoi(optarg);
+
+ if(!kill_tincd) {
+ fprintf(stderr, _("Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n"),
+ optarg);
+ usage(true);
+ return false;
+ }
+ }
+ } else
+ kill_tincd = SIGTERM;
+#else
+ kill_tincd = 1;
+#endif
+ break;
+
+ case 'n': /* net name given */
+ netname = xstrdup(optarg);
+ break;
+
+ case 'K': /* generate public/private keypair */
+ if(optarg) {
+ generate_keys = atoi(optarg);
+
+ if(generate_keys < 512) {
+ fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"),
+ optarg);
+ usage(true);
+ return false;
+ }
+
+ generate_keys &= ~7; /* Round it to bytes */
+ } else
+ generate_keys = 1024;
+ break;
+
+ case 1: /* show help */
+ show_help = true;
+ break;
+
+ case 2: /* show version */
+ show_version = true;
+ break;
+
+ case 3: /* bypass security */
+ bypass_security = true;
+ break;
+
+ case 4: /* write log entries to a file */
+ use_logfile = true;
+ if(optarg)
+ logfilename = xstrdup(optarg);
+ break;
+
+ case 5: /* write PID to a file */
+ pidfilename = xstrdup(optarg);
+ break;
+
+ case '?':
+ usage(true);
+ return false;
+
+ default:
+ break;
+ }
+ }
+
+ return true;
}
/* This function prettyprints the key generation process */
-void indicator(int a, int b, void *p)
+static void indicator(int a, int b, void *p)
{
- switch(a)
- {
- case 0:
- fprintf(stderr, ".");
- break;
- case 1:
- fprintf(stderr, "+");
- break;
- case 2:
- fprintf(stderr, "-");
- break;
- case 3:
- switch(b)
- {
- case 0:
- fprintf(stderr, " p\n");
- break;
- case 1:
- fprintf(stderr, " q\n");
- break;
- default:
- fprintf(stderr, "?");
- }
- break;
- default:
- fprintf(stderr, "?");
- }
+ switch (a) {
+ case 0:
+ fprintf(stderr, ".");
+ break;
+
+ case 1:
+ fprintf(stderr, "+");
+ break;
+
+ case 2:
+ fprintf(stderr, "-");
+ break;
+
+ case 3:
+ switch (b) {
+ case 0:
+ fprintf(stderr, " p\n");
+ break;
+
+ case 1:
+ fprintf(stderr, " q\n");
+ break;
+
+ default:
+ fprintf(stderr, "?");
+ }
+ break;
+
+ default:
+ fprintf(stderr, "?");
+ }
}
-/* Generate a public/private RSA keypair, and possibly store it into the configuration file. */
-
-int keygen(int bits)
+/*
+ Generate a public/private RSA keypair, and ask for a file to store
+ them in.
+*/
+static bool keygen(int bits)
{
- RSA *rsa_key;
-
- fprintf(stderr, _("Seeding the PRNG: please press some keys or move\nthe mouse if this program seems to have halted...\n"));
- RAND_load_file("/dev/random", 1024); /* OpenSSL PRNG state apparently uses 1024 bytes, but it seems pretty sufficient anyway :) */
-
- fprintf(stderr, _("Generating %d bits keys:\n"), bits);
- rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
- if(!rsa_key)
- {
- fprintf(stderr, _("Error during key generation!"));
- return -1;
- }
- else
- fprintf(stderr, _("Done.\n"));
-
- fprintf(stderr, _("Please copy the private key to tinc.conf and the\npublic key to your host configuration file:\n\n"));
- printf("PublicKey = %s\n", BN_bn2hex(rsa_key->n));
- printf("PrivateKey = %s\n", BN_bn2hex(rsa_key->d));
+ RSA *rsa_key;
+ FILE *f;
+ char *name = NULL;
+ char *filename;
+
+ fprintf(stderr, _("Generating %d bits keys:\n"), bits);
+ rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL);
+
+ if(!rsa_key) {
+ fprintf(stderr, _("Error during key generation!\n"));
+ return false;
+ } else
+ fprintf(stderr, _("Done.\n"));
+
+ asprintf(&filename, "%s/rsa_key.priv", confbase);
+ f = ask_and_open(filename, _("private RSA key"), "a");
+
+ if(!f)
+ return false;
- fflush(stdin);
- return 0;
-}
+#ifdef HAVE_FCHMOD
+ /* Make it unreadable for others. */
+ fchmod(fileno(f), 0600);
+#endif
+
+ if(ftell(f))
+ fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
-void memory_full(int size)
-{
- syslog(LOG_ERR, _("Memory exhausted (last is %s:%d) (couldn't allocate %d bytes), exiting."), cp_file, cp_line, size);
- exit(1);
+ PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
+ fclose(f);
+ free(filename);
+
+ get_config_string(lookup_config(config_tree, "Name"), &name);
+
+ if(name)
+ asprintf(&filename, "%s/hosts/%s", confbase, name);
+ else
+ asprintf(&filename, "%s/rsa_key.pub", confbase);
+
+ f = ask_and_open(filename, _("public RSA key"), "a");
+
+ if(!f)
+ return false;
+
+ if(ftell(f))
+ fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
+
+ PEM_write_RSAPublicKey(f, rsa_key);
+ fclose(f);
+ free(filename);
+
+ return true;
}
/*
- Detach from current terminal, write pidfile, kill parent
+ Set all files and paths according to netname
*/
-int detach(void)
+static void make_names(void)
{
- int fd;
- pid_t pid;
+#ifdef HAVE_MINGW
+ HKEY key;
+ char installdir[1024] = "";
+ long len = sizeof(installdir);
+#endif
+
+ if(netname)
+ asprintf(&identname, "tinc.%s", netname);
+ else
+ identname = xstrdup("tinc");
+
+#ifdef HAVE_MINGW
+ if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
+ if(!RegQueryValueEx(key, NULL, 0, 0, installdir, &len)) {
+ if(!logfilename)
+ asprintf(&logfilename, "%s/log/%s.log", identname);
+ if(!confbase) {
+ if(netname)
+ asprintf(&confbase, "%s/%s", installdir, netname);
+ else
+ asprintf(&confbase, "%s", installdir);
+ }
+ }
+ RegCloseKey(key);
+ if(*installdir)
+ return;
+ }
+#endif
- if(do_detach)
- {
- ppid = getpid();
+ if(!pidfilename)
+ asprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
- if((pid = fork()) < 0)
- {
- perror("fork");
- return -1;
+ if(!logfilename)
+ asprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
+
+ if(netname) {
+ if(!confbase)
+ asprintf(&confbase, CONFDIR "/tinc/%s", netname);
+ else
+ logger(LOG_INFO, _("Both netname and configuration directory given, using the latter..."));
+ } else {
+ if(!confbase)
+ asprintf(&confbase, CONFDIR "/tinc");
}
- if(pid) /* parent process */
- {
- signal(SIGTERM, parent_exit);
- sleep(600); /* wait 10 minutes */
- exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ program_name = argv[0];
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+
+ if(!parse_options(argc, argv))
+ return 1;
+
+ make_names();
+
+ if(show_version) {
+ printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE,
+ VERSION, __DATE__, __TIME__, PROT_CURRENT);
+ printf(_("Copyright (C) 1998-2006 Ivo Timmermans, Guus Sliepen and others.\n"
+ "See the AUTHORS file for a complete list.\n\n"
+ "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
+ "and you are welcome to redistribute it under certain conditions;\n"
+ "see the file COPYING for details.\n"));
+
+ return 0;
}
- }
-
- if(write_pidfile())
- return -1;
- if(do_detach)
- {
- if((fd = open("/dev/tty", O_RDWR)) >= 0)
- {
- if(ioctl(fd, TIOCNOTTY, NULL))
- {
- perror("ioctl");
- return -1;
- }
- close(fd);
+ if(show_help) {
+ usage(false);
+ return 0;
}
- if(setsid() < 0)
- return -1;
+ if(kill_tincd)
+ return !kill_other(kill_tincd);
- kill(ppid, SIGTERM);
- }
-
- chdir("/"); /* avoid keeping a mointpoint busy */
+ openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
- openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
+ /* Lock all pages into memory if requested */
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
- VERSION, __DATE__, __TIME__, debug_lvl);
- else
- syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
+ if(do_mlock)
+#ifdef HAVE_MLOCKALL
+ if(mlockall(MCL_CURRENT | MCL_FUTURE)) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "mlockall",
+ strerror(errno));
+#else
+ {
+ logger(LOG_ERR, _("mlockall() not supported on this platform!"));
+#endif
+ return -1;
+ }
- xalloc_fail_func = memory_full;
+ g_argv = argv;
- return 0;
-}
+ init_configuration(&config_tree);
-/*
- Close network connections, and terminate neatly
-*/
-void cleanup_and_exit(int c)
-{
- close_network_connections();
+ /* Slllluuuuuuurrrrp! */
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_INFO, _("Total bytes written: tap %d, socket %d; bytes read: tap %d, socket %d"),
- total_tap_out, total_socket_out, total_tap_in, total_socket_in);
+ RAND_load_file("/dev/urandom", 1024);
- closelog();
- kill(ppid, SIGTERM);
- exit(c);
-}
+ ENGINE_load_builtin_engines();
+ ENGINE_register_all_complete();
-/*
- check for an existing tinc for this net, and write pid to pidfile
-*/
-int write_pidfile(void)
-{
- int pid;
-
- if((pid = check_pid(pidfilename)))
- {
- if(netname)
- fprintf(stderr, _("A tincd is already running for net `%s' with pid %d.\n"),
- netname, pid);
- else
- fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid);
- return 1;
- }
-
- /* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
- return 1;
-
- return 0;
-}
+ OpenSSL_add_all_algorithms();
-/*
- kill older tincd for this net
-*/
-int kill_other(void)
-{
- int pid;
-
- if(!(pid = read_pid(pidfilename)))
- {
- if(netname)
- fprintf(stderr, _("No other tincd is running for net `%s'.\n"), netname);
- else
- fprintf(stderr, _("No other tincd is running.\n"));
- return 1;
- }
-
- errno = 0; /* No error, sometimes errno is only changed on error */
- /* ESRCH is returned when no process with that pid is found */
- if(kill(pid, SIGTERM) && errno == ESRCH)
- fprintf(stderr, _("Removing stale lock file.\n"));
- remove_pid(pidfilename);
-
- return 0;
-}
+ if(generate_keys) {
+ read_server_config();
+ return !keygen(generate_keys);
+ }
-/*
- Set all files and paths according to netname
-*/
-void make_names(void)
-{
- if(netname)
- {
- if(!pidfilename)
- asprintf(&pidfilename, "/var/run/tinc.%s.pid", netname);
- if(!confbase)
- asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
- if(!identname)
- asprintf(&identname, "tinc.%s", netname);
- }
- else
- {
- if(!pidfilename)
- pidfilename = "/var/run/tinc.pid";
- if(!confbase)
- asprintf(&confbase, "%s/tinc", CONFDIR);
- if(!identname)
- identname = "tinc";
- }
-}
+ if(!read_server_config())
+ return 1;
-int
-main(int argc, char **argv, char **envp)
-{
- program_name = argv[0];
+ if(lzo_init() != LZO_E_OK) {
+ logger(LOG_ERR, _("Error initializing LZO compressor!"));
+ return 1;
+ }
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
+#ifdef HAVE_MINGW
+ if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "WSAStartup", winerror(GetLastError()));
+ return 1;
+ }
- /* Do some intl stuff right now */
-
- unknown = _("unknown");
-
- parse_options(argc, argv, envp);
-
- if(show_version)
- {
- printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
- printf(_("Copyright (C) 1998,1999,2000 Ivo Timmermans, Guus Sliepen and others.\n"
- "See the AUTHORS file for a complete list.\n\n"
- "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
- "and you are welcome to redistribute it under certain conditions;\n"
- "see the file COPYING for details.\n"));
-
- return 0;
- }
-
- if(show_help)
- usage(0);
-
- if(geteuid())
- {
- fprintf(stderr, _("You must be root to run this program. Sorry.\n"));
- return 1;
- }
-
- g_argv = argv;
-
- make_names();
-
- if(generate_keys)
- exit(keygen(generate_keys));
-
- if(kill_tincd)
- exit(kill_other());
-
- if(read_server_config())
- return 1;
-
- setup_signals();
-
- if(detach())
- exit(0);
-
- if(debug_lvl >= DEBUG_ERROR)
- ERR_load_crypto_strings();
-
- for(;;)
- {
- if(!setup_network_connections())
- {
- main_loop();
- cleanup_and_exit(1);
- }
-
- syslog(LOG_ERR, _("Unrecoverable error"));
- cp_trace();
-
- if(do_detach)
- {
- syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
- sleep(MAXTIMEOUT);
- }
- else
- {
- syslog(LOG_ERR, _("Not restarting."));
- exit(0);
- }
- }
+ if(!do_detach || !init_service())
+ return main2(argc, argv);
+ else
+ return 1;
}
-RETSIGTYPE
-sigterm_handler(int a)
+int main2(int argc, char **argv)
{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got TERM signal"));
+#endif
- cleanup_and_exit(0);
-}
+ if(!detach())
+ return 1;
+
-RETSIGTYPE
-sigquit_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got QUIT signal"));
- cleanup_and_exit(0);
-}
+ /* Setup sockets and open device. */
-RETSIGTYPE
-sigsegv_square(int a)
-{
- syslog(LOG_ERR, _("Got another SEGV signal: not restarting"));
- exit(0);
-}
+ if(!setup_network_connections())
+ goto end;
-RETSIGTYPE
-sigsegv_handler(int a)
-{
- syslog(LOG_ERR, _("Got SEGV signal"));
- cp_trace();
-
- if(do_detach)
- {
- syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
- signal(SIGSEGV, sigsegv_square);
- close_network_connections();
- sleep(5);
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
- }
- else
- {
- syslog(LOG_NOTICE, _("Not restarting."));
- exit(0);
- }
-}
+ /* Start main loop. It only exits when tinc is killed. */
-RETSIGTYPE
-sighup_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got HUP signal"));
- sighup = 1;
-}
+ status = main_loop();
-RETSIGTYPE
-sigint_handler(int a)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got INT signal, exiting"));
- cleanup_and_exit(0);
-}
+ /* Shutdown properly. */
-RETSIGTYPE
-sigusr1_handler(int a)
-{
- dump_conn_list();
-}
+ close_network_connections();
-RETSIGTYPE
-sigusr2_handler(int a)
-{
- dump_subnet_list();
-/* FIXME: reprogram this.
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got USR2 signal, forcing new key generation"));
- regenerate_keys();
-*/
-}
+ ifdebug(CONNECTIONS)
+ dump_device_stats();
-RETSIGTYPE
-sighuh(int a)
-{
- syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
- cp_trace();
-}
+end:
+ logger(LOG_NOTICE, _("Terminating"));
-void
-setup_signals(void)
-{
- int i;
-
- for(i=0;i<32;i++)
- signal(i,sighuh);
-
- if(signal(SIGTERM, SIG_IGN) != SIG_ERR)
- signal(SIGTERM, sigterm_handler);
- if(signal(SIGQUIT, SIG_IGN) != SIG_ERR)
- signal(SIGQUIT, sigquit_handler);
- if(signal(SIGSEGV, SIG_IGN) != SIG_ERR)
- signal(SIGSEGV, sigsegv_handler);
- if(signal(SIGHUP, SIG_IGN) != SIG_ERR)
- signal(SIGHUP, sighup_handler);
- signal(SIGPIPE, SIG_IGN);
- if(signal(SIGINT, SIG_IGN) != SIG_ERR)
- signal(SIGINT, sigint_handler);
- signal(SIGUSR1, sigusr1_handler);
- signal(SIGUSR2, sigusr2_handler);
- signal(SIGCHLD, SIG_IGN);
-}
+#ifndef HAVE_MINGW
+ remove_pid(pidfilename);
+#endif
-RETSIGTYPE parent_exit(int a)
-{
- exit(0);
+ EVP_cleanup();
+
+ return status;
}
projects / tinc / blobdiff