2 tincd.c -- the main file for tincd
3 Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
4 2000 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 1.10.4.31 2000/11/20 18:06:17 zarq Exp $
30 #include <sys/types.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 # include <sys/ioctl.h>
41 #ifdef HAVE_OPENSSL_RAND_H
42 # include <openssl/rand.h>
47 #ifdef HAVE_OPENSSL_RSA_H
48 # include <openssl/rsa.h>
53 #ifdef HAVE_OPENSSL_ERR_H
54 # include <openssl/err.h>
73 /* The name this program was run with. */
76 /* If nonzero, display usage information and exit. */
79 /* If nonzero, print the version on standard output and exit. */
80 static int show_version;
82 /* If nonzero, it will attempt to kill a running tincd and exit. */
83 static int kill_tincd = 0;
85 /* If zero, don't detach from the terminal. */
88 /* If nonzero, generate public/private keypair for this host/net. */
89 static int generate_keys = 0;
91 char *identname; /* program name for syslog */
92 char *pidfilename; /* pid file location */
93 char **g_argv; /* a copy of the cmdline arguments */
94 char **environment; /* A pointer to the environment on
97 void cleanup_and_exit(int);
99 void make_names(void);
100 int write_pidfile(void);
102 static struct option const long_options[] =
104 { "config", required_argument, NULL, 'c' },
105 { "kill", no_argument, NULL, 'k' },
106 { "net", required_argument, NULL, 'n' },
107 { "help", no_argument, &show_help, 1 },
108 { "version", no_argument, &show_version, 1 },
109 { "no-detach", no_argument, &do_detach, 0 },
110 { "generate-keys", optional_argument, NULL, 'K'},
118 fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
121 printf(_("Usage: %s [option]...\n\n"), program_name);
122 printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
123 " -D, --no-detach Don't fork and detach.\n"
124 " -d Increase debug level.\n"
125 " -k, --kill Attempt to kill a running tincd and exit.\n"
126 " -n, --net=NETNAME Connect to net NETNAME.\n"));
127 printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
128 " --help Display this help and exit.\n"
129 " --version Output version information and exit.\n\n"));
130 printf(_("Report bugs to tinc@nl.linux.org.\n"));
136 parse_options(int argc, char **argv, char **envp)
139 int option_index = 0;
141 while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
145 case 0: /* long option */
147 case 'c': /* config file */
148 confbase = xmalloc(strlen(optarg)+1);
149 strcpy(confbase, optarg);
151 case 'D': /* no detach */
154 case 'd': /* inc debug level */
157 case 'k': /* kill old tincds */
160 case 'n': /* net name given */
161 netname = xmalloc(strlen(optarg)+1);
162 strcpy(netname, optarg);
164 case 'K': /* generate public/private keypair */
167 generate_keys = atoi(optarg);
168 if(generate_keys < 512)
170 fprintf(stderr, _("Invalid argument! BITS must be a number equal to or greater than 512.\n"));
173 generate_keys &= ~7; /* Round it to bytes */
176 generate_keys = 1024;
186 /* This function prettyprints the key generation process */
188 void indicator(int a, int b, void *p)
193 fprintf(stderr, ".");
196 fprintf(stderr, "+");
199 fprintf(stderr, "-");
205 fprintf(stderr, " p\n");
208 fprintf(stderr, " q\n");
211 fprintf(stderr, "?");
215 fprintf(stderr, "?");
219 /* Generate a public/private RSA keypair, and possibly store it into the configuration file. */
225 fprintf(stderr, _("Generating %d bits keys:\n"), bits);
226 rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
229 fprintf(stderr, _("Error during key generation!"));
233 fprintf(stderr, _("Done.\n"));
235 fprintf(stderr, _("Please copy the private key to tinc.conf and the\npublic key to your host configuration file:\n\n"));
236 printf("PublicKey = %s\n", BN_bn2hex(rsa_key->n));
237 printf("PrivateKey = %s\n", BN_bn2hex(rsa_key->d));
244 Set all files and paths according to netname
246 void make_names(void)
251 asprintf(&pidfilename, "/var/run/tinc.%s.pid", netname);
253 asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
255 fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
257 asprintf(&identname, "tinc.%s", netname);
262 pidfilename = "/var/run/tinc.pid";
264 asprintf(&confbase, "%s/tinc", CONFDIR);
271 main(int argc, char **argv, char **envp)
273 program_name = argv[0];
275 setlocale (LC_ALL, "");
276 bindtextdomain (PACKAGE, LOCALEDIR);
277 textdomain (PACKAGE);
279 /* Do some intl stuff right now */
281 unknown = _("unknown");
284 parse_options(argc, argv, envp);
288 printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
289 printf(_("Copyright (C) 1998,1999,2000 Ivo Timmermans, Guus Sliepen and others.\n"
290 "See the AUTHORS file for a complete list.\n\n"
291 "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
292 "and you are welcome to redistribute it under certain conditions;\n"
293 "see the file COPYING for details.\n"));
303 fprintf(stderr, _("You must be root to run this program. Sorry.\n"));
311 /* Slllluuuuuuurrrrp! */
313 RAND_load_file("/dev/urandom", 1024);
316 exit(keygen(generate_keys));
321 if(read_server_config())
327 if(debug_lvl >= DEBUG_ERROR)
328 ERR_load_crypto_strings();
332 if(!setup_network_connections())
338 syslog(LOG_ERR, _("Unrecoverable error"));
343 syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
348 syslog(LOG_ERR, _("Not restarting."));