X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Ftincd.c;h=32447056d09e609ccc1fd94d451dd5d3ab44e6fa;hb=8fc838f88fad6d6a632f9d4e6906e31931c765e3;hp=6d1f4e2d683e69cf9699f83f159ff165726010fb;hpb=0b9175e998c2180e5d73ef3d644a49d620c68cad;p=meshlink diff --git a/src/tincd.c b/src/tincd.c index 6d1f4e2d..32447056 100644 --- a/src/tincd.c +++ b/src/tincd.c @@ -1,7 +1,6 @@ /* tincd.c -- the main file for tincd - Copyright (C) 1998-2002 Ivo Timmermans - 2000-2002 Guus Sliepen + Copyright (C) 2014 Guus Sliepen 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 @@ -13,432 +12,211 @@ 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 1.10.4.70 2003/07/06 22:11:33 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 "config.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#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 - -#ifdef HAVE_SYS_IOCTL_H -# include #endif -#include -#include -#include -#include - -#include +#ifndef HAVE_MINGW +#include +#include +#include +#endif -#include -#include +#include #include "conf.h" +#include "crypto.h" +#include "logger.h" #include "net.h" #include "netutl.h" -#include "process.h" #include "protocol.h" -#include "subnet.h" -#include "logger.h" - -#include "system.h" - -/* The name this program was run with. */ -char *program_name = NULL; +#include "utils.h" +#include "xalloc.h" /* If nonzero, display usage information and exit. */ -int show_help = 0; +static bool show_help = false; /* If nonzero, print the version on standard output and exit. */ -int show_version = 0; - -/* If nonzero, it will attempt to kill a running tincd and exit. */ -int kill_tincd = 0; - -/* If nonzero, generate public/private keypair for this host/net. */ -int generate_keys = 0; +static bool show_version = false; /* If nonzero, use null ciphers and skip all key exchanges. */ -int bypass_security = 0; +bool bypass_security = false; -/* If nonzero, disable swapping for this process. */ -int do_mlock = 0; +char **g_argv; /* a copy of the cmdline arguments */ -/* If nonzero, write log entries to a separate file. */ -int use_logfile = 0; - -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 **environment; /* A pointer to the environment on - startup */ +static int status = 1; static struct option const long_options[] = { {"config", required_argument, NULL, 'c'}, - {"kill", optional_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}, - {"generate-keys", optional_argument, NULL, 'K'}, + {"help", no_argument, NULL, 1}, + {"version", no_argument, NULL, 2}, + {"no-detach", no_argument, NULL, 'D'}, {"debug", optional_argument, NULL, 'd'}, - {"bypass-security", no_argument, &bypass_security, 1}, - {"mlock", no_argument, &do_mlock, 1}, - {"logfile", optional_argument, NULL, 'F'}, + {"bypass-security", no_argument, NULL, 3}, + {"option", required_argument, NULL, 'o'}, {NULL, 0, NULL, 0} }; -static void usage(int status) -{ - if(status != 0) - fprintf(stderr, _("Try `%s --help\' for more information.\n"), - program_name); +#ifdef HAVE_MINGW +static struct WSAData wsa_state; +CRITICAL_SECTION mutex; +int main2(int argc, char **argv); +#endif + +static void usage(bool status) { + if(status) + 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" - " -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" - " -F, --logfile[=FILENAME] Write log entries to a logfile.\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: 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" + " --bypass-security Disables meta protocol security, for debugging.\n" + " -o, --option[HOST.]KEY=VALUE Set global/host configuration value.\n" + " --help Display this help and exit.\n" + " --version Output version information and exit.\n\n"); + printf("Report bugs to bugs@meshlink.io.\n"); } - - exit(status); } -void parse_options(int argc, char **argv, char **envp) -{ +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::F::", long_options, &option_index)) != EOF) { + while((r = getopt_long(argc, argv, "c:DLd::n:o:RU:", 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; + case 0: /* long option */ break; - case 'L': /* no detach */ - do_mlock = 1; + case 'c': /* config file */ + confbase = xstrdup(optarg); break; - 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 'k': /* kill old tincds */ - 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(1); - } - } - } else - kill_tincd = SIGTERM; - break; - - case 'n': /* net name given */ - netname = xstrdup(optarg); + case 1: /* show help */ + show_help = true; 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(1); - } - - generate_keys &= ~7; /* Round it to bytes */ - } else - generate_keys = 1024; + case 2: /* show version */ + show_version = true; break; - case 'F': /* write log entries to a file */ - use_logfile = 1; - if(optarg) - logfilename = xstrdup(optarg); + case 3: /* bypass security */ + bypass_security = true; break; - case '?': - usage(1); + case '?': /* wrong options */ + usage(true); + return false; default: break; } } -} - -/* This function prettyprints the key generation process */ -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, "?"); + if(optind < argc) { + fprintf(stderr, "%s: unrecognized argument '%s'\n", argv[0], argv[optind]); + usage(true); + return false; } -} - -/* - Generate a public/private RSA keypair, and ask for a file to store - them in. -*/ -int keygen(int bits) -{ - RSA *rsa_key; - FILE *f; - char *name = NULL; - char *filename; - 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!\n")); - return -1; - } else - fprintf(stderr, _("Done.\n")); - - 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_safe_open(filename, _("public RSA key"), "a"); - - if(!f) - return -1; - - 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); - - asprintf(&filename, "%s/rsa_key.priv", confbase); - f = ask_and_safe_open(filename, _("private RSA key"), "a"); - - if(!f) - return -1; - - if(ftell(f)) - fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n")); - - PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL); - fclose(f); - free(filename); - - return 0; -} - -/* - Set all files and paths according to netname -*/ -void make_names(void) -{ - if(netname) { - if(!pidfilename) - asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname); - if(!logfilename) - asprintf(&logfilename, LOCALSTATEDIR "/log/tinc.%s.log", netname); - - if(!confbase) - asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname); - else - logger(DEBUG_ALWAYS, LOG_INFO, _("Both netname and configuration directory given, using the latter...")); - - if(!identname) - asprintf(&identname, "tinc.%s", netname); - } else { - if(!pidfilename) - pidfilename = LOCALSTATEDIR "/run/tinc.pid"; - if(!logfilename) - logfilename = LOCALSTATEDIR "/log/tinc.log"; - - if(!confbase) - asprintf(&confbase, "%s/tinc", CONFDIR); - - if(!identname) - identname = "tinc"; - } + return true; } -int main(int argc, char **argv, char **envp) -{ - program_name = argv[0]; - - setlocale(LC_ALL, ""); - bindtextdomain(PACKAGE, LOCALEDIR); - textdomain(PACKAGE); - - environment = envp; - parse_options(argc, argv, envp); - make_names(); +int old_main(int argc, char **argv) { + if(!parse_options(argc, argv)) + return 1; if(show_version) { - printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, - VERSION, __DATE__, __TIME__, PROT_CURRENT); - printf(_("Copyright (C) 1998-2002 Ivo Timmermans, Guus Sliepen and others.\n" + printf("%s version %s (built %s %s, protocol %d.%d)\n", PACKAGE, + VERSION, __DATE__, __TIME__, PROT_MAJOR, PROT_MINOR); + 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" - "see the file COPYING for details.\n")); + "see the file COPYING for details.\n"); return 0; } - if(show_help) - usage(0); + if(show_help) { + usage(false); + return 0; + } - if(kill_tincd) - exit(kill_other(kill_tincd)); +#ifdef HAVE_MINGW + if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) { + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError())); + return 1; + } +#endif openlogger("tinc", LOGMODE_STDERR); - /* Lock all pages into memory if requested */ - - if(do_mlock) -#ifdef HAVE_MLOCKALL - if(mlockall(MCL_CURRENT | MCL_FUTURE)) { - logger(DEBUG_ALWAYS, LOG_ERR, _("System call `%s' failed: %s"), "mlockall", - strerror(errno)); -#else - { - logger(DEBUG_ALWAYS, LOG_ERR, _("mlockall() not supported on this platform!")); -#endif - return -1; - } - g_argv = argv; init_configuration(&config_tree); /* Slllluuuuuuurrrrp! */ - RAND_load_file("/dev/urandom", 1024); + gettimeofday(&now, NULL); + srand(now.tv_sec + now.tv_usec); + crypto_init(); - OpenSSL_add_all_algorithms(); + if(!read_server_config()) + return 1; - if(generate_keys) { - read_server_config(); - exit(keygen(generate_keys)); - } + char *priority = NULL; - if(read_server_config()) - exit(1); + /* Setup sockets. */ - if(lzo_init() != LZO_E_OK) { - logger(DEBUG_ALWAYS, LOG_ERR, _("Error initializing LZO compressor!")); - exit(1); - } + if(!setup_network()) + goto end; - if(detach()) - exit(0); - - for(;;) { - if(!setup_network_connections()) { - main_loop(); - cleanup_and_exit(1); - } + /* Start main loop. It only exits when tinc is killed. */ - logger(DEBUG_ALWAYS, LOG_ERR, _("Unrecoverable error")); - cp_trace(); + logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready"); - if(do_detach) { - logger(DEBUG_ALWAYS, LOG_NOTICE, _("Restarting in %d seconds!"), maxtimeout); - sleep(maxtimeout); - } else { - logger(DEBUG_ALWAYS, LOG_ERR, _("Not restarting.")); - exit(1); - } - } + try_outgoing_connections(); + + status = main_loop(); + + /* Shutdown properly. */ + +end: + close_network_connections(); + + logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating"); + + free(priority); + + crypto_exit(); + + exit_configuration(&config_tree); + + return status; }