/*
tincd.c -- the main file for tincd
- Copyright (C) 1998,99 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
+ 2000 Guus Sliepen <guus@sliepen.warande.net>
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
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 1.10.4.22 2000/10/30 00:22:54 guus Exp $
*/
#include "config.h"
#include <sys/types.h>
#include <syslog.h>
#include <unistd.h>
+#include <signal.h>
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/err.h>
+#include <string.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#include <xalloc.h>
#include "conf.h"
-#include "encr.h"
#include "net.h"
#include "netutl.h"
+#include "protocol.h"
+#include "subnet.h"
+
+#include "system.h"
/* The name this program was run with. */
char *program_name;
/* If nonzero, it will attempt to kill a running tincd and exit. */
static int kill_tincd = 0;
-char *confbase = NULL; /* directory in which all config files are */
-char *configfilename = NULL; /* configuration file name */
+/* If zero, don't detach from the terminal. */
+static int do_detach = 1;
+
+/* If nonzero, generate public/private keypair for this host/net. */
+static int generate_keys = 0;
+
char *identname; /* program name for syslog */
-char *netname = NULL; /* name of the vpn network */
char *pidfilename; /* pid file location */
static pid_t ppid; /* pid of non-detached part */
char **g_argv; /* a copy of the cmdline arguments */
{
{ "kill", no_argument, NULL, 'k' },
{ "net", required_argument, NULL, 'n' },
- { "timeout", required_argument, NULL, 'p' },
{ "help", no_argument, &show_help, 1 },
{ "version", no_argument, &show_version, 1 },
+ { "no-detach", no_argument, &do_detach, 0 },
+ { "keygen", optional_argument, NULL, 'K'},
{ NULL, 0, NULL, 0 }
};
usage(int status)
{
if(status != 0)
- fprintf(stderr, "Try `%s --help\' for more information.\n", program_name);
+ fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
else
{
- printf("Usage: %s [option]...\n\n", program_name);
- printf(" -c, --config=FILE Read configuration options from FILE.\n"
- " -d Increase debug level.\n"
- " -k, --kill Attempt to kill a running tincd and exit.\n"
- " -n, --net=NETNAME Connect to net NETNAME.\n"
- " -t, --timeout=TIMEOUT Seconds to wait before giving a timeout.\n");
- printf(" --help Display this help and exit.\n"
- " --version Output version information and exit.\n\n");
- printf("Report bugs to zarq@iname.com.\n");
+ 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 Increase debug level.\n"
+ " -k, --kill Attempt to kill a running tincd and exit.\n"
+ " -n, --net=NETNAME Connect to net NETNAME.\n"));
+ printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\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"));
}
exit(status);
}
{
int r;
int option_index = 0;
- config_t *p;
-
- while((r = getopt_long(argc, argv, "c:dkn:t:", long_options, &option_index)) != EOF)
+
+ while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
{
switch(r)
{
case 0: /* long option */
break;
case 'c': /* config file */
- configfilename = xmalloc(strlen(optarg)+1);
- strcpy(configfilename, optarg);
+ confbase = xmalloc(strlen(optarg)+1);
+ strcpy(confbase, optarg);
+ break;
+ case 'D': /* no detach */
+ do_detach = 0;
break;
case 'd': /* inc debug level */
debug_lvl++;
netname = xmalloc(strlen(optarg)+1);
strcpy(netname, optarg);
break;
- case 't': /* timeout */
- if(!(p = add_config_val(&config, TYPE_INT, optarg)))
- {
- printf("Invalid timeout value `%s'.\n", optarg);
- usage(1);
- }
+ case 'K': /* generate public/private keypair */
+ if(optarg)
+ {
+ generate_keys = atoi(optarg);
+ if(generate_keys < 512)
+ {
+ fprintf(stderr, _("Invalid argument! BITS must be a number equal to or greater than 512.\n"));
+ usage(1);
+ }
+ generate_keys &= ~7; /* Round it to bytes */
+ }
+ else
+ generate_keys = 1024;
break;
case '?':
usage(1);
}
}
-void memory_full(void)
+/* 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, "?");
+ }
+}
+
+/* Generate a public/private RSA keypair, and possibly store it into the configuration file. */
+
+int keygen(int bits)
+{
+ RSA *rsa_key;
+
+ 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!"));
+ return -1;
+ }
+ else
+ fprintf(stderr, _("Done.\n"));
+
+ fprintf(stderr, _("Please copy the private key to tinc.conf and the\npublic key to your host configuration file:\n\n"));
+ printf("PublicKey = %s\n", BN_bn2hex(rsa_key->n));
+ printf("PrivateKey = %s\n", BN_bn2hex(rsa_key->d));
+
+ fflush(stdin);
+ return 0;
+}
+
+void memory_full(int size)
{
- syslog(LOG_ERR, "Memory exhausted; exiting.");
+ syslog(LOG_ERR, _("Memory exhausted (last is %s:%d) (couldn't allocate %d bytes), exiting."), cp_file, cp_line, size);
exit(1);
}
{
int fd;
pid_t pid;
-
- ppid = getpid();
- if((pid = fork()) < 0)
- {
- perror("fork");
- return -1;
- }
- if(pid) /* parent process */
+
+ if(do_detach)
{
- signal(SIGTERM, parent_exit);
- sleep(600); /* wait 10 minutes */
- exit(1);
- }
+ ppid = getpid();
+ if((pid = fork()) < 0)
+ {
+ perror("fork");
+ return -1;
+ }
+ if(pid) /* parent process */
+ {
+ signal(SIGTERM, parent_exit);
+ sleep(600); /* wait 10 minutes */
+ exit(1);
+ }
+ }
+
if(write_pidfile())
return -1;
- if((fd = open("/dev/tty", O_RDWR)) >= 0)
+ if(do_detach)
{
- if(ioctl(fd, TIOCNOTTY, NULL))
+ if((fd = open("/dev/tty", O_RDWR)) >= 0)
{
- perror("ioctl");
- return -1;
+ if(ioctl(fd, TIOCNOTTY, NULL))
+ {
+ perror("ioctl");
+ return -1;
+ }
+ close(fd);
}
- close(fd);
- }
- kill(ppid, SIGTERM);
+ if(setsid() < 0)
+ return -1;
+
+ kill(ppid, SIGTERM);
+ }
- if(setsid() < 0)
- return -1;
chdir("/"); /* avoid keeping a mointpoint busy */
openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
- if(debug_lvl > 1)
- syslog(LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d.",
+ if(debug_lvl > DEBUG_NOTHING)
+ syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
VERSION, __DATE__, __TIME__, debug_lvl);
else
- syslog(LOG_NOTICE, "tincd %s starting, debug level %d.", VERSION, debug_lvl);
+ syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
xalloc_fail_func = memory_full;
{
close_network_connections();
- if(debug_lvl > 0)
- syslog(LOG_INFO, "Total bytes written: tap %d, socket %d; bytes read: tap %d, socket %d.",
+ if(debug_lvl > DEBUG_NOTHING)
+ syslog(LOG_INFO, _("Total bytes written: tap %d, socket %d; bytes read: tap %d, socket %d"),
total_tap_out, total_socket_out, total_tap_in, total_socket_in);
closelog();
if((pid = check_pid(pidfilename)))
{
if(netname)
- fprintf(stderr, "A tincd is already running for net `%s' with pid %d.\n",
+ fprintf(stderr, _("A tincd is already running for net `%s' with pid %d.\n"),
netname, pid);
else
- fprintf(stderr, "A tincd is already running with pid %d.\n", pid);
+ fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid);
return 1;
}
if(!(pid = read_pid(pidfilename)))
{
if(netname)
- fprintf(stderr, "No other tincd is running for net `%s'.\n", netname);
+ fprintf(stderr, _("No other tincd is running for net `%s'.\n"), netname);
else
- fprintf(stderr, "No other tincd is running.\n");
+ fprintf(stderr, _("No other tincd is running.\n"));
return 1;
}
errno = 0; /* No error, sometimes errno is only changed on error */
/* ESRCH is returned when no process with that pid is found */
if(kill(pid, SIGTERM) && errno == ESRCH)
- fprintf(stderr, "Removing stale lock file.\n");
+ fprintf(stderr, _("Removing stale lock file.\n"));
remove_pid(pidfilename);
return 0;
*/
void make_names(void)
{
- if(!configfilename)
- {
- if(netname)
- {
- configfilename = xmalloc(strlen(netname)+18+strlen(CONFDIR));
- sprintf(configfilename, "%s/tinc/%s/tincd.conf", CONFDIR, netname);
- }
- else
- {
- configfilename = xmalloc(17+strlen(CONFDIR));
- sprintf(configfilename, "%s/tinc/tincd.conf", CONFDIR);
- }
- }
-
if(netname)
{
- pidfilename = xmalloc(strlen(netname)+20);
- sprintf(pidfilename, "/var/run/tincd.%s.pid", netname);
- confbase = xmalloc(strlen(netname)+8+strlen(CONFDIR));
- sprintf(confbase, "%s/tinc/%s/", CONFDIR, netname);
- identname = xmalloc(strlen(netname)+7);
- sprintf(identname, "tincd.%s", netname);
+ if(!pidfilename)
+ asprintf(&pidfilename, "/var/run/tinc.%s.pid", netname);
+ if(!confbase)
+ asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
+ if(!identname)
+ asprintf(&identname, "tinc.%s", netname);
}
else
{
- pidfilename = "/var/run/tincd.pid";
- confbase = xmalloc(7+strlen(CONFDIR));
- sprintf(confbase, "%s/tinc/", CONFDIR);
- identname = "tincd";
+ if(!pidfilename)
+ pidfilename = "/var/run/tinc.pid";
+ if(!confbase)
+ asprintf(&confbase, "%s/tinc", CONFDIR);
+ if(!identname)
+ identname = "tinc";
}
}
{
program_name = argv[0];
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ /* Do some intl stuff right now */
+
+ unknown = _("unknown");
+
parse_options(argc, argv, envp);
if(show_version)
{
- printf("%s version %s\nCopyright (C) 1998,99 Ivo Timmermans 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\n", PACKAGE, VERSION);
- printf("This product includes software developed by Eric Young (eay@mincom.oz.au)\n");
+ printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
+ printf(_("Copyright (C) 1998,1999,2000 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"));
return 0;
}
if(geteuid())
{
- fprintf(stderr, "You must be root to run this program. sorry.\n");
+ fprintf(stderr, _("You must be root to run this program. Sorry.\n"));
return 1;
}
make_names();
+ /* Slllluuuuuuurrrrp! */
+
+ RAND_load_file("/dev/urandom", 1024);
+
+ if(generate_keys)
+ exit(keygen(generate_keys));
+
if(kill_tincd)
exit(kill_other());
- if(read_config_file(configfilename))
+ if(read_server_config())
return 1;
setup_signals();
if(detach())
- cleanup_and_exit(1);
-
- if(security_init())
- return 1;
+ exit(0);
- if(setup_network_connections())
- cleanup_and_exit(1);
-
- main_loop();
+ if(debug_lvl >= DEBUG_ERROR)
+ ERR_load_crypto_strings();
+
+ for(;;)
+ {
+ if(!setup_network_connections())
+ {
+ main_loop();
+ cleanup_and_exit(1);
+ }
+
+ syslog(LOG_ERR, _("Unrecoverable error"));
+ cp_trace();
- cleanup_and_exit(1);
- return 1;
+ if(do_detach)
+ {
+ syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
+ sleep(MAXTIMEOUT);
+ }
+ else
+ {
+ syslog(LOG_ERR, _("Not restarting."));
+ exit(0);
+ }
+ }
}
RETSIGTYPE
sigterm_handler(int a)
{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got TERM signal");
+ if(debug_lvl > DEBUG_NOTHING)
+ syslog(LOG_NOTICE, _("Got TERM signal"));
+
cleanup_and_exit(0);
}
RETSIGTYPE
sigquit_handler(int a)
{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got QUIT signal");
+ if(debug_lvl > DEBUG_NOTHING)
+ syslog(LOG_NOTICE, _("Got QUIT signal"));
cleanup_and_exit(0);
}
RETSIGTYPE
sigsegv_square(int a)
{
- syslog(LOG_NOTICE, "Got another SEGV signal: not restarting");
+ syslog(LOG_ERR, _("Got another SEGV signal: not restarting"));
exit(0);
}
RETSIGTYPE
sigsegv_handler(int a)
{
- if(cp_file)
- syslog(LOG_NOTICE, "Got SEGV signal after %s line %d. Trying to re-execute.",
- cp_file, cp_line);
- else
- syslog(LOG_NOTICE, "Got SEGV signal; trying to re-execute.");
-
- signal(SIGSEGV, sigsegv_square);
+ syslog(LOG_ERR, _("Got SEGV signal"));
+ cp_trace();
- close_network_connections();
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
+ if(do_detach)
+ {
+ syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
+ signal(SIGSEGV, sigsegv_square);
+ close_network_connections();
+ sleep(5);
+ remove_pid(pidfilename);
+ execvp(g_argv[0], g_argv);
+ }
+ else
+ {
+ syslog(LOG_NOTICE, _("Not restarting."));
+ exit(0);
+ }
}
RETSIGTYPE
sighup_handler(int a)
{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got HUP signal");
- close_network_connections();
- setup_network_connections();
- /* FIXME: read config-file and re-establish network connections */
+ if(debug_lvl > DEBUG_NOTHING)
+ syslog(LOG_NOTICE, _("Got HUP signal"));
+ sighup = 1;
}
RETSIGTYPE
sigint_handler(int a)
{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got INT signal");
+ if(debug_lvl > DEBUG_NOTHING)
+ syslog(LOG_NOTICE, _("Got INT signal, exiting"));
cleanup_and_exit(0);
}
RETSIGTYPE
sigusr2_handler(int a)
{
- if(debug_lvl > 1)
- syslog(LOG_NOTICE, "Forcing new keys");
- regenerate_keys();
+ dump_subnet_list();
}
RETSIGTYPE
sighuh(int a)
{
- if(cp_file)
- syslog(LOG_NOTICE, "Got unexpected signal after %s line %d.",
- cp_file, cp_line);
- else
- syslog(LOG_NOTICE, "Got unexpected signal.");
+ syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
+ cp_trace();
}
void
signal(SIGINT, sigint_handler);
signal(SIGUSR1, sigusr1_handler);
signal(SIGUSR2, sigusr2_handler);
+ signal(SIGCHLD, SIG_IGN);
}
RETSIGTYPE parent_exit(int a)
{
exit(0);
}
-
projects / tinc / blobdiff