along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: tincd.c,v 1.10.4.8 2000/08/17 16:51:08 guus Exp $
+ $Id: tincd.c,v 1.10.4.37 2000/11/29 14:24:40 zarq Exp $
*/
#include "config.h"
#include <sys/types.h>
#include <syslog.h>
#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#include <termios.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
-#include <pidfile.h>
+#ifdef HAVE_OPENSSL_RAND_H
+# include <openssl/rand.h>
+#else
+# include <rand.h>
+#endif
+
+#ifdef HAVE_OPENSSL_RSA_H
+# include <openssl/rsa.h>
+#else
+# include <rsa.h>
+#endif
+
+#ifdef HAVE_OPENSSL_ERR_H
+# include <openssl/err.h>
+#else
+# include <err.h>
+#endif
+
+#ifdef HAVE_OPENSSL_PEM_H
+# include <openssl/pem.h>
+#else
+# include <pem.h>
+#endif
+
+
+
#include <utils.h>
#include <xalloc.h>
#include "conf.h"
-#include "encr.h"
#include "net.h"
#include "netutl.h"
+#include "process.h"
#include "protocol.h"
+#include "subnet.h"
#include "system.h"
static int kill_tincd = 0;
/* If zero, don't detach from the terminal. */
-static int do_detach = 1;
+extern int do_detach;
+
+/* If nonzero, generate public/private keypair for this host/net. */
+static int generate_keys = 0;
-char *confbase = NULL; /* directory in which all config files are */
-/* char *configfilename = NULL; /* configuration file name, moved to config.c */
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 */
-
-void cleanup_and_exit(int);
-int detach(void);
-int kill_other(void);
-void make_names(void);
-RETSIGTYPE parent_exit(int a);
-void setup_signals(void);
-int write_pidfile(void);
+char **environment; /* A pointer to the environment on
+ startup */
static struct option const long_options[] =
{
+ { "config", required_argument, NULL, 'c' },
{ "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 },
+ { "generate-keys", optional_argument, NULL, 'K'},
{ NULL, 0, NULL, 0 }
};
else
{
printf(_("Usage: %s [option]...\n\n"), program_name);
- printf(_(" -c, --config=FILE Read configuration options from FILE.\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"
- " -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(_(" -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:Ddkn: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;
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(int size)
-{
- syslog(LOG_ERR, _("Memory exhausted (last is %s:%d) (couldn't allocate %d bytes), exiting."), cp_file, cp_line, size);
- exit(1);
-}
+/* This function prettyprints the key generation process */
-/*
- Detach from current terminal, write pidfile, kill parent
-*/
-int detach(void)
+void indicator(int a, int b, void *p)
{
- int fd;
- pid_t pid;
-
- if(do_detach)
- {
- 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(do_detach)
- {
- if((fd = open("/dev/tty", O_RDWR)) >= 0)
- {
- if(ioctl(fd, TIOCNOTTY, NULL))
- {
- perror("ioctl");
- return -1;
- }
- close(fd);
- }
-
- if(setsid() < 0)
- return -1;
-
- kill(ppid, SIGTERM);
- }
-
- chdir("/"); /* avoid keeping a mointpoint busy */
-
- openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
-
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
- VERSION, __DATE__, __TIME__, debug_lvl);
- else
- syslog(LOG_NOTICE, _("tincd %s starting"), VERSION, debug_lvl);
-
- xalloc_fail_func = memory_full;
-
- return 0;
-}
-
-/*
- Close network connections, and terminate neatly
-*/
-void cleanup_and_exit(int c)
-{
- close_network_connections();
-
- if(debug_lvl > 0)
- 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();
- kill(ppid, SIGTERM);
- exit(c);
-}
-
-/*
- check for an existing tinc for this net, and write pid to pidfile
-*/
-int write_pidfile(void)
-{
- int pid;
-
- if((pid = check_pid(pidfilename)))
- {
- if(netname)
- 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);
- return 1;
- }
-
- /* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
- return 1;
-
- return 0;
+ 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, "?");
+ }
}
/*
- kill older tincd for this net
+ Generate a public/private RSA keypair, and ask for a file to store
+ them in.
*/
-int kill_other(void)
+int keygen(int bits)
{
- int pid;
+ RSA *rsa_key;
+ FILE *f;
- if(!(pid = read_pid(pidfilename)))
+ fprintf(stderr, _("Generating %d bits keys:\n"), bits);
+ rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
+ if(!rsa_key)
{
- if(netname)
- fprintf(stderr, _("No other tincd is running for net `%s'.\n"), netname);
- else
- fprintf(stderr, _("No other tincd is running.\n"));
- return 1;
- }
+ fprintf(stderr, _("Error during key generation!"));
+ return -1;
+ }
+ else
+ fprintf(stderr, _("Done.\n"));
- 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"));
- remove_pid(pidfilename);
+ if((f = ask_and_safe_open("rsa_key.pub", _("public RSA key"))) == NULL)
+ return -1;
+ PEM_write_RSAPublicKey(f, rsa_key);
+ fclose(f);
+
+ if((f = ask_and_safe_open("rsa_key.priv", _("private RSA key"))) == NULL)
+ return -1;
+ PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
+ fclose(f);
return 0;
}
*/
void make_names(void)
{
- if(!configfilename)
- {
- if(netname)
- {
- asprintf(&configfilename, "%s/tinc/%s/tinc.conf", CONFDIR, netname);
- }
- else
- {
- asprintf(&configfilename, "%s/tinc/tinc.conf", CONFDIR);
- }
- }
-
if(netname)
{
- asprintf(&pidfilename, "/var/run/tinc.%s.pid", netname);
- asprintf(&confbase, "%s/tinc/%s/", CONFDIR, netname);
- asprintf(&identname, "tinc.%s", netname);
+ if(!pidfilename)
+ asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname);
+ if(!confbase)
+ asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
+ else
+ fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
+ if(!identname)
+ asprintf(&identname, "tinc.%s", netname);
}
else
{
- pidfilename = "/var/run/tinc.pid";
- asprintf(&confbase, "%s/tinc/", CONFDIR);
- identname = "tinc";
+ if(!pidfilename)
+ pidfilename = LOCALSTATEDIR "/run/tinc.pid";
+ if(!confbase)
+ asprintf(&confbase, "%s/tinc", CONFDIR);
+ if(!identname)
+ identname = "tinc";
}
}
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
+ /* Do some intl stuff right now */
+
+ unknown = _("unknown");
+
+ environment = envp;
parse_options(argc, argv, envp);
if(show_version)
{
printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
- printf(_("Copyright (C) 1998,1999,2000 Ivo Timmermans and others,\n"
- "see the AUTHORS file for a complete list.\n\n"
+ 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\n"));
- printf(_("This product includes software developed by Eric Young (eay@mincom.oz.au)\n"));
+ "see the file COPYING for details.\n"));
return 0;
}
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())
exit(0);
- if(security_init())
- return 1;
-
+ if(debug_lvl >= DEBUG_ERROR)
+ ERR_load_crypto_strings();
+
for(;;)
{
- setup_network_connections();
-
- main_loop();
-
- cleanup_and_exit(1);
+ if(!setup_network_connections())
+ {
+ main_loop();
+ cleanup_and_exit(1);
+ }
+
+ syslog(LOG_ERR, _("Unrecoverable error"));
+ cp_trace();
- syslog(LOG_ERR, _("Unrecoverable error, restarting in %d seconds!"), MAXTIMEOUT);
- sleep(MAXTIMEOUT);
+ 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"));
- cleanup_and_exit(0);
-}
-
-RETSIGTYPE
-sigquit_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, _("Got QUIT signal"));
- cleanup_and_exit(0);
-}
-
-RETSIGTYPE
-sigsegv_square(int a)
-{
- syslog(LOG_NOTICE, _("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);
- close_network_connections();
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
-}
-
-RETSIGTYPE
-sighup_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, _("Got HUP signal, rereading configuration and restarting"));
- sighup = 1;
-}
-
-RETSIGTYPE
-sigint_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, _("Got INT signal, exiting"));
- cleanup_and_exit(0);
-}
-
-RETSIGTYPE
-sigusr1_handler(int a)
-{
- dump_conn_list();
-}
-
-RETSIGTYPE
-sigusr2_handler(int a)
-{
- if(debug_lvl > 1)
- syslog(LOG_NOTICE, _("Got USR2 signal, forcing new key generation"));
- regenerate_keys();
-}
-
-RETSIGTYPE
-sighuh(int a)
-{
- if(cp_file)
- syslog(LOG_NOTICE, _("Got unexpected signal %d after %s line %d"),
- a, cp_file, cp_line);
- else
- syslog(LOG_NOTICE, _("Got unexpected signal %d"), a);
-}
-
-void
-setup_signals(void)
-{
- int i;
-
- for(i=0;i<32;i++)
- signal(i,sighuh);
-
- if(signal(SIGTERM, SIG_IGN) != SIG_ERR)
- signal(SIGTERM, sigterm_handler);
- if(signal(SIGQUIT, SIG_IGN) != SIG_ERR)
- signal(SIGQUIT, sigquit_handler);
- if(signal(SIGSEGV, SIG_IGN) != SIG_ERR)
- signal(SIGSEGV, sigsegv_handler);
- if(signal(SIGHUP, SIG_IGN) != SIG_ERR)
- signal(SIGHUP, sighup_handler);
- signal(SIGPIPE, SIG_IGN);
- if(signal(SIGINT, SIG_IGN) != SIG_ERR)
- signal(SIGINT, sigint_handler);
- signal(SIGUSR1, sigusr1_handler);
- signal(SIGUSR2, sigusr2_handler);
-// signal(SIGCHLD, parent_exit);
-}
-
-RETSIGTYPE parent_exit(int a)
-{
- exit(0);
-}
projects / tinc / blobdiff