2 tincd.c -- the main file for tincd
3 Copyright (C) 1998-2001 Ivo Timmermans <itimmermans@bigfoot.com>
4 2000,2001 Guus Sliepen <guus@sliepen.warande.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: tincd.c,v 1.10.4.50 2001/07/20 13:54:19 guus Exp $
30 #include <sys/types.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 # include <sys/ioctl.h>
41 #include <openssl/rand.h>
42 #include <openssl/rsa.h>
43 #include <openssl/pem.h>
57 /* The name this program was run with. */
60 /* If nonzero, display usage information and exit. */
63 /* If nonzero, print the version on standard output and exit. */
64 static int show_version;
66 /* If nonzero, it will attempt to kill a running tincd and exit. */
67 static int kill_tincd = 0;
69 /* If nonzero, generate public/private keypair for this host/net. */
70 static int generate_keys = 0;
72 char *identname; /* program name for syslog */
73 char *pidfilename; /* pid file location */
74 char **g_argv; /* a copy of the cmdline arguments */
75 char **environment; /* A pointer to the environment on
78 static struct option const long_options[] =
80 { "config", required_argument, NULL, 'c' },
81 { "kill", no_argument, NULL, 'k' },
82 { "net", required_argument, NULL, 'n' },
83 { "help", no_argument, &show_help, 1 },
84 { "version", no_argument, &show_version, 1 },
85 { "no-detach", no_argument, &do_detach, 0 },
86 { "generate-keys", optional_argument, NULL, 'K'},
94 fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
97 printf(_("Usage: %s [option]...\n\n"), program_name);
98 printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
99 " -D, --no-detach Don't fork and detach.\n"
100 " -d Increase debug level.\n"
101 " -k, --kill Attempt to kill a running tincd and exit.\n"
102 " -n, --net=NETNAME Connect to net NETNAME.\n"));
103 printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
104 " --help Display this help and exit.\n"
105 " --version Output version information and exit.\n\n"));
106 printf(_("Report bugs to tinc@nl.linux.org.\n"));
112 parse_options(int argc, char **argv, char **envp)
115 int option_index = 0;
117 while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
121 case 0: /* long option */
123 case 'c': /* config file */
124 confbase = xmalloc(strlen(optarg)+1);
125 strcpy(confbase, optarg);
127 case 'D': /* no detach */
130 case 'd': /* inc debug level */
132 debug_lvl = atoi(optarg);
136 case 'k': /* kill old tincds */
139 case 'n': /* net name given */
140 netname = xmalloc(strlen(optarg)+1);
141 strcpy(netname, optarg);
143 case 'K': /* generate public/private keypair */
146 generate_keys = atoi(optarg);
147 if(generate_keys < 512)
149 fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"),
153 generate_keys &= ~7; /* Round it to bytes */
156 generate_keys = 1024;
166 /* This function prettyprints the key generation process */
168 void indicator(int a, int b, void *p)
173 fprintf(stderr, ".");
176 fprintf(stderr, "+");
179 fprintf(stderr, "-");
185 fprintf(stderr, " p\n");
188 fprintf(stderr, " q\n");
191 fprintf(stderr, "?");
195 fprintf(stderr, "?");
200 Generate a public/private RSA keypair, and ask for a file to store
210 fprintf(stderr, _("Generating %d bits keys:\n"), bits);
211 rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
215 fprintf(stderr, _("Error during key generation!\n"));
219 fprintf(stderr, _("Done.\n"));
221 if(config && (cfg = get_config_val(config, config_name)))
222 asprintf(&filename, "%s/hosts/%s", confbase, cfg->data.ptr);
224 asprintf(&filename, "%s/rsa_key.priv", confbase);
226 if((f = ask_and_safe_open(filename, _("public RSA key"), "a")) == NULL)
230 fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
232 PEM_write_RSAPublicKey(f, rsa_key);
236 asprintf(&filename, "%s/rsa_key.priv", confbase);
237 if((f = ask_and_safe_open(filename, _("private RSA key"), "a")) == NULL)
241 fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
243 PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
251 Set all files and paths according to netname
253 void make_names(void)
258 asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname);
260 asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
262 syslog(LOG_INFO, _("Both netname and configuration directory given, using the latter..."));
264 asprintf(&identname, "tinc.%s", netname);
269 pidfilename = LOCALSTATEDIR "/run/tinc.pid";
271 asprintf(&confbase, "%s/tinc", CONFDIR);
278 main(int argc, char **argv, char **envp)
280 program_name = argv[0];
282 setlocale (LC_ALL, "");
283 bindtextdomain (PACKAGE, LOCALEDIR);
284 textdomain (PACKAGE);
287 parse_options(argc, argv, envp);
291 printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
292 printf(_("Copyright (C) 1998-2001 Ivo Timmermans, Guus Sliepen and others.\n"
293 "See the AUTHORS file for a complete list.\n\n"
294 "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
295 "and you are welcome to redistribute it under certain conditions;\n"
296 "see the file COPYING for details.\n"));
306 fprintf(stderr, _("You must be root to run this program.\n"));
311 openlog("tinc", LOG_CONS, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */
313 openlog("tinc", LOG_PERROR, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */
320 /* Slllluuuuuuurrrrp! */
322 RAND_load_file("/dev/urandom", 1024);
326 read_server_config();
327 exit(keygen(generate_keys));
333 if(read_server_config())
341 if(!setup_network_connections())
347 syslog(LOG_ERR, _("Unrecoverable error"));
352 syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
357 syslog(LOG_ERR, _("Not restarting."));