/*
tincd.c -- the main file for tincd
- Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2012 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>
+ Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
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
#include <sys/mman.h>
#endif
-#include <openssl/rand.h>
-#include <openssl/rsa.h>
-#include <openssl/pem.h>
-#include <openssl/evp.h>
-#include <openssl/engine.h>
-
-#ifdef HAVE_LZO
-#include LZO1X_H
-#endif
-
#ifndef HAVE_MINGW
#include <pwd.h>
#include <grp.h>
#include <getopt.h>
#include "conf.h"
-#include "control.h"
#include "crypto.h"
-#include "device.h"
#include "logger.h"
#include "net.h"
#include "netutl.h"
-#include "process.h"
#include "protocol.h"
#include "utils.h"
#include "xalloc.h"
-/* The name this program was run with. */
-char *program_name = NULL;
-
/* If nonzero, display usage information and exit. */
static bool show_help = false;
/* If nonzero, use null ciphers and skip all key exchanges. */
bool bypass_security = false;
-/* If nonzero, disable swapping for this process. */
-static 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 *logfilename = NULL; /* log file location */
-char *pidfilename = NULL;
-char **g_argv; /* a copy of the cmdline arguments */
+char **g_argv; /* a copy of the cmdline arguments */
static int status = 1;
{"no-detach", no_argument, NULL, 'D'},
{"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}
};
static void usage(bool status) {
if(status)
- fprintf(stderr, "Try `%s --help\' for more information.\n",
- program_name);
+ fprintf(stderr, "Try `tincd --help\' for more information.\n");
else {
- printf("Usage: %s [option]...\n\n", program_name);
- printf( " -c, --config=DIR Read configuration options from DIR.\n"
+ printf("Usage: tincd [option]...\n\n");
+ 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"
" -n, --net=NETNAME Connect to net NETNAME.\n"
- " -L, --mlock Lock tinc into main memory.\n"
- " --logfile[=FILENAME] Write log entries to a logfile.\n"
- " --pidfile=FILENAME Write PID and control socket cookie to FILENAME.\n"
" --bypass-security Disables meta protocol security, for debugging.\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"
+ " --help Display this help and exit.\n"
" --version Output version information and exit.\n\n");
- printf("Report bugs to tinc@tinc-vpn.org.\n");
+ printf("Report bugs to bugs@meshlink.io.\n");
}
}
int option_index = 0;
int lineno = 0;
- cmdline_conf = list_alloc((list_action_t)free_config);
-
while((r = getopt_long(argc, argv, "c:DLd::n:o:RU:", long_options, &option_index)) != EOF) {
switch (r) {
- case 0: /* long option */
+ case 0: /* long option */
break;
- case 'c': /* config file */
+ case 'c': /* config file */
confbase = xstrdup(optarg);
break;
- case 'D': /* no detach */
- do_detach = false;
- break;
-
- case 'L': /* no detach */
-#ifndef HAVE_MLOCKALL
- logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "mlockall()");
- return false;
-#else
- do_mlock = true;
- break;
-#endif
-
- case 'd': /* inc debug level */
+ case 'd': /* increase debug level */
+ if(!optarg && optind < argc && *argv[optind] != '-')
+ optarg = argv[optind++];
if(optarg)
debug_level = atoi(optarg);
else
debug_level++;
break;
- case 'n': /* net name given */
- /* netname "." is special: a "top-level name" */
- netname = strcmp(optarg, ".") != 0 ?
- xstrdup(optarg) : NULL;
- break;
-
- case 'o': /* option */
- cfg = parse_config_line(optarg, NULL, ++lineno);
- if (!cfg)
- return false;
- list_insert_tail(cmdline_conf, cfg);
- break;
-
- case 'R': /* chroot to NETNAME dir */
- do_chroot = true;
- break;
-
- case 'U': /* setuid to USER */
- switchuser = optarg;
- break;
-
- case 1: /* show help */
+ case 1: /* show help */
show_help = true;
break;
- case 2: /* show version */
+ case 2: /* show version */
show_version = true;
break;
- case 3: /* bypass security */
+ 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: /* open control socket here */
- pidfilename = xstrdup(optarg);
- break;
-
- case '?':
+ case '?': /* wrong options */
usage(true);
return false;
}
}
- return true;
-}
-
-/*
- Set all files and paths according to netname
-*/
-static void make_names(void) {
-#ifdef HAVE_MINGW
- HKEY key;
- char installdir[1024] = "";
- long len = sizeof installdir;
-#endif
-
- if(netname)
- xasprintf(&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)
- xasprintf(&logfilename, "%s/log/%s.log", identname);
- if(!confbase) {
- if(netname)
- xasprintf(&confbase, "%s/%s", installdir, netname);
- else
- xasprintf(&confbase, "%s", installdir);
- }
- if(!pidfilename)
- xasprintf(&pidfilename, "%s/pid", confbase);
- }
- RegCloseKey(key);
- if(*installdir)
- return;
- }
-#endif
-
- if(!logfilename)
- xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
-
- if(!pidfilename)
- xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
-
- if(netname) {
- if(!confbase)
- xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
- else
- logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
- } else {
- if(!confbase)
- xasprintf(&confbase, CONFDIR "/tinc");
- }
-}
-
-static void free_names(void) {
- if (identname) free(identname);
- if (netname) free(netname);
- if (pidfilename) free(pidfilename);
- if (logfilename) free(logfilename);
- if (confbase) free(confbase);
-}
-
-static bool drop_privs(void) {
-#ifdef HAVE_MINGW
- if (switchuser) {
- logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-U");
+ if(optind < argc) {
+ fprintf(stderr, "%s: unrecognized argument '%s'\n", argv[0], argv[optind]);
+ usage(true);
return false;
}
- if (do_chroot) {
- logger(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
- "initgroups", strerror(errno));
- return false;
- }
- endgrent();
- endpwent();
- }
- if (do_chroot) {
- tzset(); /* for proper timestamps in logs */
- if (chroot(confbase) != 0 || chdir("/") != 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
- "chroot", strerror(errno));
- return false;
- }
- free(confbase);
- confbase = xstrdup("");
- }
- if (switchuser)
- if (setuid(uid) != 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
- "setuid", strerror(errno));
- return false;
- }
-#endif
+
return true;
}
-#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
-
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.%d)\n", PACKAGE,
VERSION, __DATE__, __TIME__, PROT_MAJOR, PROT_MINOR);
- printf("Copyright (C) 1998-2012 Ivo Timmermans, Guus Sliepen and others.\n"
+ printf("Copyright (C) 1998-2014 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"
}
#endif
- openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
-
- if(!event_init()) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error initializing libevent!");
- return 1;
- }
+ openlogger("tinc", LOGMODE_STDERR);
g_argv = argv;
- if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid())
- do_detach = false;
-#ifdef HAVE_UNSETENV
- unsetenv("LISTEN_PID");
-#endif
-
init_configuration(&config_tree);
/* Slllluuuuuuurrrrp! */
- srand(time(NULL));
+ gettimeofday(&now, NULL);
+ srand(now.tv_sec + now.tv_usec);
crypto_init();
if(!read_server_config())
return 1;
-#ifdef HAVE_LZO
- if(lzo_init() != LZO_E_OK) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error initializing LZO compressor!");
- return 1;
- }
-#endif
-
-#ifdef HAVE_MINGW
- if(!do_detach || !init_service())
- return main2(argc, argv);
- else
- return 1;
-}
-
-int main2(int argc, char **argv) {
- InitializeCriticalSection(&mutex);
- EnterCriticalSection(&mutex);
-#endif
- char *priority = NULL;
-
- if(!detach())
- return 1;
+ char *priority = NULL;
-#ifdef HAVE_MLOCKALL
- /* 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(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "mlockall",
- strerror(errno));
- return 1;
- }
-#endif
-
- /* Setup sockets and open device. */
+ /* Setup sockets. */
if(!setup_network())
- goto end_nonet;
+ goto end;
- if(!init_control())
- goto end_nonet;
+ /* Start main loop. It only exits when tinc is killed. */
- /* Initiate all outgoing connections. */
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
- "setpriority", strerror(errno));
- goto end;
- }
- } else if(!strcasecmp(priority, "High")) {
- if (setpriority(HIGH_PRIORITY_CLASS) != 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
- "setpriority", strerror(errno));
- goto end;
- }
- } else {
- logger(DEBUG_ALWAYS, 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. */
- if(debug_level >= DEBUG_CONNECTIONS)
- devops.dump_stats();
-
- close_network_connections();
-
end:
- exit_control();
+ close_network_connections();
-end_nonet:
logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating");
free(priority);
crypto_exit();
exit_configuration(&config_tree);
- free(cmdline_conf);
- free_names();
return status;
}
projects / meshlink / blobdiff