/*
tincd.c -- the main file for tincd
- Copyright (C) 1998-2003 Ivo Timmermans <ivo@o2w.nl>
- 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 1998-2005 Ivo Timmermans
+ 2000-2017 Guus Sliepen <guus@tinc-vpn.org>
+ 2008 Max Rijevski <maksuf@gmail.com>
+ 2009 Michael Tokarev <mjt@tls.msk.ru>
+ 2010 Julien Muchembled <jm@jmuchemb.eu>
+ 2010 Timothy Redaelli <timothy@redaelli.eu>
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
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: tincd.c,v 1.10.4.80 2003/08/02 20:50:38 guus Exp $
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
#include <openssl/rsa.h>
#include <openssl/pem.h>
#include <openssl/evp.h>
+#include <openssl/engine.h>
+
+#ifdef HAVE_LZO
+#include LZO1X_H
+#endif
-#include <lzo1x.h>
+#ifndef HAVE_MINGW
+#include <pwd.h>
+#include <grp.h>
+#include <time.h>
+#endif
+#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
+#else
+#include "getopt.h"
+#endif
+
+#include "pidfile.h"
#include "conf.h"
+#include "device.h"
#include "logger.h"
#include "net.h"
#include "netutl.h"
/* If nonzero, disable swapping for this process. */
bool do_mlock = false;
+/* If nonzero, chroot to netdir after startup. */
+static bool do_chroot = false;
+
+/* If !NULL, do setuid to given user after startup */
+static const char *switchuser = NULL;
+
/* 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 */
+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 */
-int exitstatus = 0;
+static int status = 1;
static struct option const long_options[] = {
{"config", required_argument, NULL, 'c'},
{"debug", optional_argument, NULL, 'd'},
{"bypass-security", no_argument, NULL, 3},
{"mlock", no_argument, NULL, 'L'},
+ {"chroot", no_argument, NULL, 'R'},
+ {"user", required_argument, NULL, 'U'},
{"logfile", optional_argument, NULL, 4},
{"pidfile", required_argument, NULL, 5},
+ {"option", required_argument, NULL, 'o'},
{NULL, 0, NULL, 0}
};
#ifdef HAVE_MINGW
static struct WSAData wsa_state;
+CRITICAL_SECTION mutex;
+int main2(int argc, char **argv);
#endif
-static void usage(bool status)
-{
+static void usage(bool status) {
if(status)
- fprintf(stderr, _("Try `%s --help\' for more information.\n"),
- program_name);
+ 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@nl.linux.org.\n"));
+ 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"
+ " -o, --option=[HOST.]KEY=VALUE Set global/host configuration value.\n"
+ " -R, --chroot chroot to NET dir at startup.\n"
+ " -U, --user=USER setuid to given USER at startup.\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");
}
}
-static bool parse_options(int argc, char **argv)
-{
+static bool parse_options(int argc, char **argv) {
+ config_t *cfg;
int r;
int option_index = 0;
+ int lineno = 0;
- while((r = getopt_long(argc, argv, "c:DLd::k::n:K::", long_options, &option_index)) != EOF) {
- switch (r) {
- case 0: /* long option */
- break;
+ cmdline_conf = list_alloc((list_action_t)free_config);
- case 'c': /* config file */
- confbase = xstrdup(optarg);
- break;
+ while((r = getopt_long(argc, argv, "c:DLd::k::n:o:K::RU:", long_options, &option_index)) != EOF) {
+ switch(r) {
+ case 0: /* long option */
+ break;
- case 'D': /* no detach */
- do_detach = false;
- break;
+ case 'c': /* config file */
+ if(confbase) {
+ fprintf(stderr, "Only one configuration directory can be given.\n");
+ usage(true);
+ return false;
+ }
- case 'L': /* no detach */
- do_mlock = true;
- break;
+ confbase = xstrdup(optarg);
+ break;
- case 'd': /* inc debug level */
- if(optarg)
- debug_level = atoi(optarg);
- else
- debug_level++;
- break;
+ case 'D': /* no detach */
+ do_detach = false;
+ 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;
+ case 'L': /* no detach */
+#ifndef HAVE_MLOCKALL
+ logger(LOG_ERR, "%s not supported on this platform", "mlockall()");
+ return false;
#else
- kill_tincd = 1;
+ do_mlock = true;
+ break;
#endif
- break;
- case 'n': /* net name given */
- netname = xstrdup(optarg);
- break;
+ case 'd': /* increase debug level */
+ if(!optarg && optind < argc && *argv[optind] != '-') {
+ optarg = argv[optind++];
+ }
- case 'K': /* generate public/private keypair */
- if(optarg) {
- generate_keys = atoi(optarg);
+ if(optarg) {
+ debug_level = atoi(optarg);
+ } else {
+ debug_level++;
+ }
- if(generate_keys < 512) {
- fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"),
- optarg);
+ break;
+
+ case 'k': /* kill old tincds */
+#ifndef HAVE_MINGW
+ if(!optarg && optind < argc && *argv[optind] != '-') {
+ optarg = argv[optind++];
+ }
+
+ 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 if(!strcasecmp(optarg, "ABRT")) {
+ kill_tincd = SIGABRT;
+ } 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;
+ }
- generate_keys &= ~7; /* Round it to bytes */
- } else
- generate_keys = 1024;
- break;
+#else
+ kill_tincd = 1;
+#endif
+ break;
- case 1: /* show help */
- show_help = true;
- break;
+ case 'n': /* net name given */
- case 2: /* show version */
- show_version = true;
- break;
+ /* netname "." is special: a "top-level name" */
+ if(netname) {
+ fprintf(stderr, "Only one netname can be given.\n");
+ usage(true);
+ return false;
+ }
- case 3: /* bypass security */
- bypass_security = true;
- break;
+ if(optarg && strcmp(optarg, ".")) {
+ netname = xstrdup(optarg);
+ }
- case 4: /* write log entries to a file */
- use_logfile = true;
- if(optarg)
- logfilename = xstrdup(optarg);
- break;
+ break;
+
+ case 'o': /* option */
+ cfg = parse_config_line(optarg, NULL, ++lineno);
- case 5: /* write PID to a file */
- pidfilename = xstrdup(optarg);
- break;
+ if(!cfg) {
+ return false;
+ }
- case '?':
+ list_insert_tail(cmdline_conf, cfg);
+ break;
+
+ case 'K': /* generate public/private keypair */
+ if(!optarg && optind < argc && *argv[optind] != '-') {
+ optarg = argv[optind++];
+ }
+
+ 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 = 2048;
+ }
+
+ break;
+
+ case 'R': /* chroot to NETNAME dir */
+ do_chroot = true;
+ break;
+
+ case 'U': /* setuid to USER */
+ switchuser = optarg;
+ 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 && optind < argc && *argv[optind] != '-') {
+ optarg = argv[optind++];
+ }
+
+ if(optarg) {
+ if(logfilename) {
+ fprintf(stderr, "Only one logfile can be given.\n");
+ usage(true);
+ return false;
+ }
+
+ logfilename = xstrdup(optarg);
+ }
+
+ break;
+
+ case 5: /* write PID to a file */
+ if(pidfilename) {
+ fprintf(stderr, "Only one pidfile can be given.\n");
usage(true);
return false;
+ }
+
+ pidfilename = xstrdup(optarg);
+ break;
+
+ case '?':
+ usage(true);
+ return false;
- default:
- break;
+ default:
+ break;
}
}
+ if(optind < argc) {
+ fprintf(stderr, "%s: unrecognized argument '%s'\n", argv[0], argv[optind]);
+ usage(true);
+ return false;
+ }
+
return true;
}
/* This function prettyprints the key generation process */
-static void indicator(int a, int b, void *p)
-{
- switch (a) {
+static int indicator(int a, int b, BN_GENCB *cb) {
+ 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, ".");
+ fprintf(stderr, " p\n");
break;
case 1:
- fprintf(stderr, "+");
+ fprintf(stderr, " q\n");
break;
- case 2:
- fprintf(stderr, "-");
- break;
+ default:
+ fprintf(stderr, "?");
+ }
- case 3:
- switch (b) {
- case 0:
- fprintf(stderr, " p\n");
- break;
+ break;
- case 1:
- fprintf(stderr, " q\n");
- break;
+ default:
+ fprintf(stderr, "?");
+ }
- default:
- fprintf(stderr, "?");
- }
- break;
+ return 1;
+}
- default:
- fprintf(stderr, "?");
- }
+#ifndef HAVE_BN_GENCB_NEW
+BN_GENCB *BN_GENCB_new(void) {
+ return xmalloc_and_zero(sizeof(BN_GENCB));
+}
+
+void BN_GENCB_free(BN_GENCB *cb) {
+ free(cb);
}
+#endif
/*
Generate a public/private RSA keypair, and ask for a file to store
them in.
*/
-static bool keygen(int bits)
-{
+static bool keygen(int bits) {
+ BIGNUM *e = NULL;
RSA *rsa_key;
FILE *f;
- char *name = NULL;
- char *filename;
+ char filename[PATH_MAX];
+ BN_GENCB *cb;
+ int result;
- fprintf(stderr, _("Generating %d bits keys:\n"), bits);
- rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
+ fprintf(stderr, "Generating %d bits keys:\n", bits);
+
+ cb = BN_GENCB_new();
+
+ if(!cb) {
+ abort();
+ }
+
+ BN_GENCB_set(cb, indicator, NULL);
+
+ rsa_key = RSA_new();
+ BN_hex2bn(&e, "10001");
+
+ if(!rsa_key || !e) {
+ abort();
+ }
- if(!rsa_key) {
- fprintf(stderr, _("Error during key generation!\n"));
+ result = RSA_generate_key_ex(rsa_key, bits, e, cb);
+
+ BN_free(e);
+ BN_GENCB_free(cb);
+
+ if(!result) {
+ fprintf(stderr, "Error during key generation!\n");
+ RSA_free(rsa_key);
return false;
- } else
- fprintf(stderr, _("Done.\n"));
+ } else {
+ fprintf(stderr, "Done.\n");
+ }
- asprintf(&filename, "%s/rsa_key.priv", confbase);
- f = ask_and_safe_open(filename, _("private RSA key"), true, "a");
+ snprintf(filename, sizeof(filename), "%s/rsa_key.priv", confbase);
+ f = ask_and_open(filename, "private RSA key");
- if(!f)
+ if(!f) {
+ RSA_free(rsa_key);
return false;
+ }
- if(ftell(f))
- fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
+#ifdef HAVE_FCHMOD
+ /* Make it unreadable for others. */
+ fchmod(fileno(f), 0600);
+#endif
+ fputc('\n', f);
PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
fclose(f);
- free(filename);
- get_config_string(lookup_config(config_tree, "Name"), &name);
+ char *name = get_name();
- if(name)
- asprintf(&filename, "%s/hosts/%s", confbase, name);
- else
- asprintf(&filename, "%s/rsa_key.pub", confbase);
+ if(name) {
+ snprintf(filename, sizeof(filename), "%s/hosts/%s", confbase, name);
+ free(name);
+ } else {
+ snprintf(filename, sizeof(filename), "%s/rsa_key.pub", confbase);
+ }
- f = ask_and_safe_open(filename, _("public RSA key"), false, "a");
+ f = ask_and_open(filename, "public RSA key");
- if(!f)
+ if(!f) {
+ RSA_free(rsa_key);
return false;
+ }
- if(ftell(f))
- fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
-
+ fputc('\n', f);
PEM_write_RSAPublicKey(f, rsa_key);
fclose(f);
- free(filename);
+
+ RSA_free(rsa_key);
return true;
}
/*
Set all files and paths according to netname
*/
-static void make_names(void)
-{
- if(netname)
- asprintf(&identname, "tinc.%s", netname);
- else
+static void make_names(void) {
+#ifdef HAVE_MINGW
+ HKEY key;
+ char installdir[1024] = "";
+ DWORD len = sizeof(installdir);
+#endif
+
+ if(netname) {
+ xasprintf(&identname, "tinc.%s", netname);
+ } else {
identname = xstrdup("tinc");
+ }
+
+#ifdef HAVE_MINGW
- if(!pidfilename)
- asprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
+ if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
+ if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
+ if(!confbase) {
+ if(netname) {
+ xasprintf(&confbase, "%s/%s", installdir, netname);
+ } else {
+ xasprintf(&confbase, "%s", installdir);
+ }
+ }
- if(!logfilename)
- asprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
+ if(!logfilename) {
+ xasprintf(&logfilename, "%s/tinc.log", confbase);
+ }
+ }
+
+ RegCloseKey(key);
+
+ if(*installdir) {
+ return;
+ }
+ }
+
+#endif
+
+ if(!pidfilename) {
+ xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
+ }
+
+ if(!logfilename) {
+ xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
+ }
if(netname) {
- if(!confbase)
- asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
- else
- logger(LOG_INFO, _("Both netname and configuration directory given, using the latter..."));
+ if(!confbase) {
+ xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
+ } else {
+ logger(LOG_INFO, "Both netname and configuration directory given, using the latter...");
+ }
} else {
- if(!confbase)
- asprintf(&confbase, "%s/tinc", CONFDIR);
+ if(!confbase) {
+ xasprintf(&confbase, CONFDIR "/tinc");
+ }
}
}
-int main(int argc, char **argv)
-{
- program_name = argv[0];
+static void free_names() {
+ if(identname) {
+ free(identname);
+ }
+
+ if(netname) {
+ free(netname);
+ }
+
+ if(pidfilename) {
+ free(pidfilename);
+ }
+
+ if(logfilename) {
+ free(logfilename);
+ }
+
+ if(confbase) {
+ free(confbase);
+ }
+}
+
+static bool drop_privs() {
+#ifdef HAVE_MINGW
+
+ if(switchuser) {
+ logger(LOG_ERR, "%s not supported on this platform", "-U");
+ return false;
+ }
+
+ if(do_chroot) {
+ logger(LOG_ERR, "%s not supported on this platform", "-R");
+ return false;
+ }
+
+#else
+ uid_t uid = 0;
+
+ if(switchuser) {
+ struct passwd *pw = getpwnam(switchuser);
+
+ if(!pw) {
+ logger(LOG_ERR, "unknown user `%s'", switchuser);
+ return false;
+ }
+
+ uid = pw->pw_uid;
+
+ if(initgroups(switchuser, pw->pw_gid) != 0 ||
+ setgid(pw->pw_gid) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "initgroups", strerror(errno));
+ return false;
+ }
+
+#ifndef ANDROID
+// Not supported in android NDK
+ endgrent();
+ endpwent();
+#endif
+ }
+
+ if(do_chroot) {
+ tzset(); /* for proper timestamps in logs */
+
+ if(chroot(confbase) != 0 || chdir("/") != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "chroot", strerror(errno));
+ return false;
+ }
+
+ free(confbase);
+ confbase = xstrdup("");
+ }
+
+ if(switchuser)
+ if(setuid(uid) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "setuid", strerror(errno));
+ return false;
+ }
+
+#endif
+ return true;
+}
- setlocale(LC_ALL, "");
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
+#ifdef HAVE_MINGW
+# define setpriority(level) !SetPriorityClass(GetCurrentProcess(), (level))
+#else
+# define NORMAL_PRIORITY_CLASS 0
+# define BELOW_NORMAL_PRIORITY_CLASS 10
+# define HIGH_PRIORITY_CLASS -10
+# define setpriority(level) (setpriority(PRIO_PROCESS, 0, (level)))
+#endif
- if(!parse_options(argc, argv))
+int main(int argc, char **argv) {
+ program_name = argv[0];
+
+ 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) 1998-2003 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"));
+ printf("%s version %s\n", PACKAGE, VERSION);
+ printf("Copyright (C) 1998-2017 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;
}
return 0;
}
- if(kill_tincd)
+ make_names();
+
+ if(kill_tincd) {
return !kill_other(kill_tincd);
+ }
- openlogger("tinc", LOGMODE_STDERR);
+ openlogger("tinc", use_logfile ? LOGMODE_FILE : LOGMODE_STDERR);
- /* Lock all pages into memory if requested */
+ g_argv = argv;
- 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;
+ if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid()) {
+ do_detach = false;
}
- g_argv = argv;
+#ifdef HAVE_UNSETENV
+ unsetenv("LISTEN_PID");
+#endif
init_configuration(&config_tree);
RAND_load_file("/dev/urandom", 1024);
+ ENGINE_load_builtin_engines();
+ ENGINE_register_all_complete();
+
OpenSSL_add_all_algorithms();
if(generate_keys) {
return !keygen(generate_keys);
}
- if(!read_server_config())
+ if(!read_server_config()) {
return 1;
+ }
+
+#ifdef HAVE_LZO
if(lzo_init() != LZO_E_OK) {
- logger(LOG_ERR, _("Error initializing LZO compressor!"));
+ logger(LOG_ERR, "Error initializing LZO compressor!");
return 1;
}
+#endif
+
#ifdef HAVE_MINGW
+
if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "WSAStartup", winerror(GetLastError()));
+ logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
return 1;
}
- if(!do_detach || !init_service())
+ if(!do_detach || !init_service()) {
return main2(argc, argv);
- else
+ } else {
return 1;
+ }
}
-int main2(int argc, char **argv)
-{
+int main2(int argc, char **argv) {
+ InitializeCriticalSection(&mutex);
+ EnterCriticalSection(&mutex);
#endif
+ char *priority = NULL;
- if(!detach())
+ if(!detach()) {
return 1;
-
- for(;;) {
- if(setup_network_connections()) {
- int status;
- status = main_loop();
+ }
+
+#ifdef HAVE_MLOCKALL
- close_network_connections();
+ /* Lock all pages into memory if requested.
+ * This has to be done after daemon()/fork() so it works for child.
+ * No need to do that in parent as it's very short-lived. */
+ if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s", "mlockall",
+ strerror(errno));
+ return 1;
+ }
- ifdebug(CONNECTIONS)
- dump_device_stats();
+#endif
- logger(LOG_NOTICE, _("Terminating"));
- return status;
- }
+ /* Setup sockets and open device. */
- logger(LOG_ERR, _("Unrecoverable error"));
- cp_trace();
+ if(!setup_network()) {
+ goto end;
+ }
- if(do_detach) {
- logger(LOG_NOTICE, _("Restarting in %d seconds!"), maxtimeout);
- sleep(maxtimeout);
+ /* Initiate all outgoing connections. */
+
+ try_outgoing_connections();
+
+ /* Change process priority */
+
+ if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
+ if(!strcasecmp(priority, "Normal")) {
+ if(setpriority(NORMAL_PRIORITY_CLASS) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "setpriority", strerror(errno));
+ goto end;
+ }
+ } else if(!strcasecmp(priority, "Low")) {
+ if(setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "setpriority", strerror(errno));
+ goto end;
+ }
+ } else if(!strcasecmp(priority, "High")) {
+ if(setpriority(HIGH_PRIORITY_CLASS) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "setpriority", strerror(errno));
+ goto end;
+ }
} else {
- logger(LOG_ERR, _("Not restarting."));
- return 1;
+ logger(LOG_ERR, "Invalid priority `%s`!", priority);
+ goto end;
}
}
+
+ /* drop privileges */
+ if(!drop_privs()) {
+ goto end;
+ }
+
+ /* Start main loop. It only exits when tinc is killed. */
+
+ status = main_loop();
+
+ /* Shutdown properly. */
+
+ ifdebug(CONNECTIONS)
+ devops.dump_stats();
+
+ close_network_connections();
+
+end:
+ logger(LOG_NOTICE, "Terminating");
+
+#ifndef HAVE_MINGW
+ remove_pid(pidfilename);
+#endif
+
+ free(priority);
+
+ EVP_cleanup();
+ ERR_free_strings();
+ ENGINE_cleanup();
+
+ exit_configuration(&config_tree);
+ list_delete_list(cmdline_conf);
+ free_names();
+
+ return status;
}