/*
tincd.c -- the main file for tincd
Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2016 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>
#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
#include <time.h>
#endif
-#include <getopt.h>
-
#include "conf.h"
#include "control.h"
#include "crypto.h"
#include "device.h"
+#include "event.h"
#include "logger.h"
+#include "names.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;
+#include "version.h"
/* 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;
+#ifdef HAVE_MLOCKALL
/* If nonzero, disable swapping for this process. */
static bool do_mlock = false;
+#endif
+#ifndef HAVE_MINGW
/* 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;
+#endif
/* 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;
+/* If nonzero, use syslog instead of stderr in no-detach mode. */
+bool use_syslog = false;
+
char **g_argv; /* a copy of the cmdline arguments */
static int status = 1;
{"chroot", no_argument, NULL, 'R'},
{"user", required_argument, NULL, 'U'},
{"logfile", optional_argument, NULL, 4},
+ {"syslog", no_argument, NULL, 's'},
{"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
" -L, --mlock Lock tinc into main memory.\n"
#endif
" --logfile[=FILENAME] Write log entries to a logfile.\n"
+ " -s --syslog Use syslog instead of stderr with --no-detach.\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"
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) {
+ while((r = getopt_long(argc, argv, "c:DLd::n:so:RU:", long_options, &option_index)) != EOF) {
switch (r) {
case 0: /* long option */
break;
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
netname = xstrdup(optarg);
break;
+ case 's': /* syslog */
+ use_logfile = false;
+ use_syslog = true;
+ break;
+
case 'o': /* option */
cfg = parse_config_line(optarg, NULL, ++lineno);
if (!cfg)
break;
case 4: /* write log entries to a file */
+ use_syslog = false;
use_logfile = true;
+ if(!optarg && optind < argc && *argv[optind] != '-')
+ optarg = argv[optind++];
if(optarg)
logfilename = xstrdup(optarg);
break;
}
}
+ if(optind < argc) {
+ fprintf(stderr, "%s: unrecognized argument '%s'\n", argv[0], argv[optind]);
+ usage(true);
+ return false;
+ }
+
if(!netname && (netname = getenv("NETNAME")))
netname = xstrdup(netname);
netname = NULL;
}
- if(netname && (strpbrk(netname, "\\/") || *netname == '.')) {
+ if(netname && !check_netname(netname, false)) {
fprintf(stderr, "Invalid character in netname!\n");
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" SLASH "log" SLASH "%s.log", identname);
- if(!confbase) {
- if(netname)
- xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
- else
- xasprintf(&confbase, "%s", installdir);
- }
- if(!pidfilename)
- xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
- }
- RegCloseKey(key);
- if(*installdir)
- return;
- }
-#endif
-
- if(!logfilename)
- xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
-
- if(!pidfilename)
- xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
+ if(netname && !check_netname(netname, true))
+ fprintf(stderr, "Warning: unsafe character in netname!\n");
- if(netname) {
- if(!confbase)
- xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%s", netname);
- else
- logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
- } else {
- if(!confbase)
- xasprintf(&confbase, CONFDIR SLASH "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);
+ return true;
}
static bool drop_privs(void) {
-#ifdef HAVE_MINGW
- return false;
-#else
+#ifndef HAVE_MINGW
uid_t uid = 0;
if (switchuser) {
struct passwd *pw = getpwnam(switchuser);
#ifdef HAVE_MINGW
# define setpriority(level) !SetPriorityClass(GetCurrentProcess(), (level))
+
+static void stop_handler(void *data, int flags) {
+ event_exit();
+}
+
+static BOOL WINAPI console_ctrl_handler(DWORD type) {
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "Got console shutdown request");
+ if (WSASetEvent(stop_io.event) == FALSE)
+ abort();
+ return TRUE;
+}
#else
# define NORMAL_PRIORITY_CLASS 0
# define BELOW_NORMAL_PRIORITY_CLASS 10
if(!parse_options(argc, argv))
return 1;
- make_names();
+ make_names(true);
+ chdir(confbase);
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"
+ BUILD_VERSION, BUILD_DATE, BUILD_TIME, PROT_MAJOR, PROT_MINOR);
+ printf("Copyright (C) 1998-2016 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"
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
return 1;
}
+#else
+ // Check if we got an umbilical fd from the process that started us
+ char *umbstr = getenv("TINC_UMBILICAL");
+ if(umbstr) {
+ umbilical = atoi(umbstr);
+ if(fcntl(umbilical, F_GETFL) < 0)
+ umbilical = 0;
+#ifdef FD_CLOEXEC
+ if(umbilical)
+ fcntl(umbilical, F_SETFD, FD_CLOEXEC);
+#endif
+ }
#endif
openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
/* Slllluuuuuuurrrrp! */
- srand(time(NULL));
+ gettimeofday(&now, NULL);
+ srand(now.tv_sec + now.tv_usec);
crypto_init();
if(!read_server_config())
#endif
#ifdef HAVE_MINGW
- if(!do_detach || !init_service())
- return main2(argc, argv);
- else
- return 1;
+ io_add_event(&stop_io, stop_handler, NULL, WSACreateEvent());
+ if (stop_io.event == FALSE)
+ abort();
+
+ int result;
+ if(!do_detach || !init_service()) {
+ SetConsoleCtrlHandler(console_ctrl_handler, TRUE);
+ result = main2(argc, argv);
+ } else
+ result = 1;
+
+ if (WSACloseEvent(stop_io.event) == FALSE)
+ abort();
+ io_del(&stop_io);
+ return result;
}
int main2(int argc, char **argv) {
- InitializeCriticalSection(&mutex);
- EnterCriticalSection(&mutex);
#endif
char *priority = NULL;
/* Setup sockets and open device. */
if(!setup_network())
- goto end_nonet;
-
- if(!init_control())
- goto end_nonet;
-
- /* Initiate all outgoing connections. */
-
- try_outgoing_connections();
+ goto end;
/* Change process priority */
/* Start main loop. It only exits when tinc is killed. */
- status = main_loop();
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
- /* Shutdown properly. */
+ if(umbilical) { // snip!
+ write(umbilical, "", 1);
+ close(umbilical);
+ umbilical = 0;
+ }
- if(debug_level >= DEBUG_CONNECTIONS)
- devops.dump_stats();
+ try_outgoing_connections();
- close_network_connections();
+ status = main_loop();
+
+ /* Shutdown properly. */
end:
- exit_control();
+ close_network_connections();
-end_nonet:
logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating");
free(priority);
projects / tinc / blobdiff