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 1.10.4.42 2001/01/13 16:36:23 guus 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>
59 #ifdef HAVE_OPENSSL_PEM_H
60 # include <openssl/pem.h>
79 /* The name this program was run with. */
82 /* If nonzero, display usage information and exit. */
85 /* If nonzero, print the version on standard output and exit. */
86 static int show_version;
88 /* If nonzero, it will attempt to kill a running tincd and exit. */
89 static int kill_tincd = 0;
91 /* If zero, don't detach from the terminal. */
94 /* If nonzero, generate public/private keypair for this host/net. */
95 static int generate_keys = 0;
97 char *identname; /* program name for syslog */
98 char *pidfilename; /* pid file location */
99 char **g_argv; /* a copy of the cmdline arguments */
100 char **environment; /* A pointer to the environment on
103 static struct option const long_options[] =
105 { "config", required_argument, NULL, 'c' },
106 { "kill", no_argument, NULL, 'k' },
107 { "net", required_argument, NULL, 'n' },
108 { "help", no_argument, &show_help, 1 },
109 { "version", no_argument, &show_version, 1 },
110 { "no-detach", no_argument, &do_detach, 0 },
111 { "generate-keys", optional_argument, NULL, 'K'},
119 fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
122 printf(_("Usage: %s [option]...\n\n"), program_name);
123 printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
124 " -D, --no-detach Don't fork and detach.\n"
125 " -d Increase debug level.\n"
126 " -k, --kill Attempt to kill a running tincd and exit.\n"
127 " -n, --net=NETNAME Connect to net NETNAME.\n"));
128 printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
129 " --help Display this help and exit.\n"
130 " --version Output version information and exit.\n\n"));
131 printf(_("Report bugs to tinc@nl.linux.org.\n"));
137 parse_options(int argc, char **argv, char **envp)
140 int option_index = 0;
142 while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
146 case 0: /* long option */
148 case 'c': /* config file */
149 confbase = xmalloc(strlen(optarg)+1);
150 strcpy(confbase, optarg);
152 case 'D': /* no detach */
155 case 'd': /* inc debug level */
157 debug_lvl = atoi(optarg);
161 case 'k': /* kill old tincds */
164 case 'n': /* net name given */
165 netname = xmalloc(strlen(optarg)+1);
166 strcpy(netname, optarg);
168 case 'K': /* generate public/private keypair */
171 generate_keys = atoi(optarg);
172 if(generate_keys < 512)
174 fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"),
178 generate_keys &= ~7; /* Round it to bytes */
181 generate_keys = 1024;
191 /* This function prettyprints the key generation process */
193 void indicator(int a, int b, void *p)
198 fprintf(stderr, ".");
201 fprintf(stderr, "+");
204 fprintf(stderr, "-");
210 fprintf(stderr, " p\n");
213 fprintf(stderr, " q\n");
216 fprintf(stderr, "?");
220 fprintf(stderr, "?");
225 Generate a public/private RSA keypair, and ask for a file to store
235 fprintf(stderr, _("Generating %d bits keys:\n"), bits);
236 rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
240 fprintf(stderr, _("Error during key generation!"));
244 fprintf(stderr, _("Done.\n"));
246 if(config && (cfg = get_config_val(config, config_name)))
247 asprintf(&filename, "%s/hosts/%s", confbase, cfg->data.ptr);
249 asprintf(&filename, "%s/rsa_key.priv");
251 if((f = ask_and_safe_open(filename, _("public RSA key"), "a")) == NULL)
255 fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file."));
257 PEM_write_RSAPublicKey(f, rsa_key);
261 asprintf(&filename, "%s/rsa_key.priv", confbase);
262 if((f = ask_and_safe_open(filename, _("private RSA key"), "a")) == NULL)
266 fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file."));
268 PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
276 Set all files and paths according to netname
278 void make_names(void)
283 asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname);
285 asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
287 syslog(LOG_INFO, _("Both netname and configuration directory given, using the latter..."));
289 asprintf(&identname, "tinc.%s", netname);
294 pidfilename = LOCALSTATEDIR "/run/tinc.pid";
296 asprintf(&confbase, "%s/tinc", CONFDIR);
303 main(int argc, char **argv, char **envp)
305 program_name = argv[0];
307 setlocale (LC_ALL, "");
308 bindtextdomain (PACKAGE, LOCALEDIR);
309 textdomain (PACKAGE);
311 /* Do some intl stuff right now */
313 unknown = _("unknown");
316 parse_options(argc, argv, envp);
320 printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
321 printf(_("Copyright (C) 1998-2001 Ivo Timmermans, Guus Sliepen and others.\n"
322 "See the AUTHORS file for a complete list.\n\n"
323 "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
324 "and you are welcome to redistribute it under certain conditions;\n"
325 "see the file COPYING for details.\n"));
335 fprintf(stderr, _("You must be root to run this program.\n"));
339 openlog("tinc", LOG_PERROR, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */
345 /* Slllluuuuuuurrrrp! */
347 RAND_load_file("/dev/urandom", 1024);
351 read_server_config();
352 exit(keygen(generate_keys));
358 if(read_server_config())
364 if(debug_lvl >= DEBUG_ERROR)
365 ERR_load_crypto_strings();
369 if(!setup_network_connections())
375 syslog(LOG_ERR, _("Unrecoverable error"));
380 syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
385 syslog(LOG_ERR, _("Not restarting."));