Merge branch 'master' of git://tinc-vpn.org/tinc into 1.1
[tinc] / src / tincd.c
index 45e29ab..3cbac4b 100644 (file)
@@ -1,7 +1,7 @@
 /*
     tincd.c -- the main file for tincd
     Copyright (C) 1998-2005 Ivo Timmermans
-                  2000-2011 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2012 Guus Sliepen <guus@tinc-vpn.org>
                   2008      Max Rijevski <maksuf@gmail.com>
                   2009      Michael Tokarev <mjt@tls.msk.ru>
                   2010      Julien Muchembled <jm@jmuchemb.eu>
@@ -107,6 +107,7 @@ static struct option const long_options[] = {
        {"user", required_argument, NULL, 'U'},
        {"logfile", optional_argument, NULL, 4},
        {"pidfile", required_argument, NULL, 5},
+       {"option", required_argument, NULL, 'o'},
        {NULL, 0, NULL, 0}
 };
 
@@ -122,18 +123,18 @@ static void usage(bool status) {
                                program_name);
        else {
                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, --debug[=LEVEL]       Increase debug level or set it to LEVEL.\n"
-                               "  -n, --net=NETNAME         Connect to net NETNAME.\n"
-                               "  -L, --mlock               Lock tinc into main memory.\n"
-                               "      --logfile[=FILENAME]  Write log entries to a logfile.\n"
-                               "      --pidfile=FILENAME    Write PID and control socket cookie to FILENAME.\n"
-                               "      --bypass-security     Disables meta protocol security, for debugging.\n"
-                               "  -o [HOST.]KEY=VALUE       Set global/host configuration value.\n"
-                               "  -R, --chroot              chroot to NET dir at startup.\n"
-                               "  -U, --user=USER           setuid to given USER at startup.\n"                                "      --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, --debug[=LEVEL]           Increase debug level or set it to LEVEL.\n"
+                               "  -n, --net=NETNAME             Connect to net NETNAME.\n"
+                               "  -L, --mlock                   Lock tinc into main memory.\n"
+                               "      --logfile[=FILENAME]      Write log entries to a logfile.\n"
+                               "      --pidfile=FILENAME        Write PID and control socket cookie to FILENAME.\n"
+                               "      --bypass-security         Disables meta protocol security, for debugging.\n"
+                               "  -o, --option[HOST.]KEY=VALUE  Set global/host configuration value.\n"
+                               "  -R, --chroot                  chroot to NET dir at startup.\n"
+                               "  -U, --user=USER               setuid to given USER at startup.\n"                            "      --help                    Display this help and exit.\n"
+                               "      --version                 Output version information and exit.\n\n");
                printf("Report bugs to tinc@tinc-vpn.org.\n");
        }
 }
@@ -161,7 +162,7 @@ static bool parse_options(int argc, char **argv) {
 
                        case 'L':                               /* no detach */
 #ifndef HAVE_MLOCKALL
-                               logger(LOG_ERR, "%s not supported on this platform", "mlockall()");
+                               logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "mlockall()");
                                return false;
 #else
                                do_mlock = true;
@@ -275,7 +276,7 @@ static void make_names(void) {
                if(!confbase)
                        xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
                else
-                       logger(LOG_INFO, "Both netname and configuration directory given, using the latter...");
+                       logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
        } else {
                if(!confbase)
                        xasprintf(&confbase, CONFDIR "/tinc");
@@ -293,11 +294,11 @@ static void free_names(void) {
 static bool drop_privs(void) {
 #ifdef HAVE_MINGW
        if (switchuser) {
-               logger(LOG_ERR, "%s not supported on this platform", "-U");
+               logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-U");
                return false;
        }
        if (do_chroot) {
-               logger(LOG_ERR, "%s not supported on this platform", "-R");
+               logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-R");
                return false;
        }
 #else
@@ -305,13 +306,13 @@ static bool drop_privs(void) {
        if (switchuser) {
                struct passwd *pw = getpwnam(switchuser);
                if (!pw) {
-                       logger(LOG_ERR, "unknown user `%s'", switchuser);
+                       logger(DEBUG_ALWAYS, LOG_ERR, "unknown user `%s'", switchuser);
                        return false;
                }
                uid = pw->pw_uid;
                if (initgroups(switchuser, pw->pw_gid) != 0 ||
                    setgid(pw->pw_gid) != 0) {
-                       logger(LOG_ERR, "System call `%s' failed: %s",
+                       logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
                               "initgroups", strerror(errno));
                        return false;
                }
@@ -321,7 +322,7 @@ static bool drop_privs(void) {
        if (do_chroot) {
                tzset();        /* for proper timestamps in logs */
                if (chroot(confbase) != 0 || chdir("/") != 0) {
-                       logger(LOG_ERR, "System call `%s' failed: %s",
+                       logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
                               "chroot", strerror(errno));
                        return false;
                }
@@ -330,7 +331,7 @@ static bool drop_privs(void) {
        }
        if (switchuser)
                if (setuid(uid) != 0) {
-                       logger(LOG_ERR, "System call `%s' failed: %s",
+                       logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
                               "setuid", strerror(errno));
                        return false;
                }
@@ -356,9 +357,9 @@ int main(int argc, char **argv) {
        make_names();
 
        if(show_version) {
-               printf("%s version %s (built %s %s, protocol %d)\n", PACKAGE,
-                          VERSION, __DATE__, __TIME__, PROT_CURRENT);
-               printf("Copyright (C) 1998-2011 Ivo Timmermans, Guus Sliepen and others.\n"
+               printf("%s version %s (built %s %s, protocol %d.%d)\n", PACKAGE,
+                          VERSION, __DATE__, __TIME__, PROT_MAJOR, PROT_MINOR);
+               printf("Copyright (C) 1998-2012 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"
@@ -374,7 +375,7 @@ int main(int argc, char **argv) {
 
 #ifdef HAVE_MINGW
        if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
-               logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
+               logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
                return 1;
        }
 #endif
@@ -382,12 +383,18 @@ int main(int argc, char **argv) {
        openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
 
        if(!event_init()) {
-               logger(LOG_ERR, "Error initializing libevent!");
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error initializing libevent!");
                return 1;
        }
 
        g_argv = argv;
 
+       if(getenv("LISTEN_PID") && atoi(getenv("LISTEN_PID")) == getpid())
+               do_detach = false;
+#ifdef HAVE_UNSETENV
+       unsetenv("LISTEN_PID");
+#endif
+
        init_configuration(&config_tree);
 
        /* Slllluuuuuuurrrrp! */
@@ -400,7 +407,7 @@ int main(int argc, char **argv) {
 
 #ifdef HAVE_LZO
        if(lzo_init() != LZO_E_OK) {
-               logger(LOG_ERR, "Error initializing LZO compressor!");
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error initializing LZO compressor!");
                return 1;
        }
 #endif
@@ -416,6 +423,7 @@ int main2(int argc, char **argv) {
        InitializeCriticalSection(&mutex);
        EnterCriticalSection(&mutex);
 #endif
+        char *priority = NULL;
 
        if(!detach())
                return 1;
@@ -425,7 +433,7 @@ int main2(int argc, char **argv) {
         * This has to be done after daemon()/fork() so it works for child.
         * No need to do that in parent as it's very short-lived. */
        if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
-               logger(LOG_ERR, "System call `%s' failed: %s", "mlockall",
+               logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "mlockall",
                   strerror(errno));
                return 1;
        }
@@ -445,29 +453,27 @@ int main2(int argc, char **argv) {
 
        /* Change process priority */
 
-        char *priority = NULL;
-
         if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
                 if(!strcasecmp(priority, "Normal")) {
                         if (setpriority(NORMAL_PRIORITY_CLASS) != 0) {
-                                logger(LOG_ERR, "System call `%s' failed: %s",
+                                logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
                                        "setpriority", strerror(errno));
                                 goto end;
                         }
                 } else if(!strcasecmp(priority, "Low")) {
                         if (setpriority(BELOW_NORMAL_PRIORITY_CLASS) != 0) {
-                                       logger(LOG_ERR, "System call `%s' failed: %s",
+                                       logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
                                        "setpriority", strerror(errno));
                                 goto end;
                         }
                 } else if(!strcasecmp(priority, "High")) {
                         if (setpriority(HIGH_PRIORITY_CLASS) != 0) {
-                                logger(LOG_ERR, "System call `%s' failed: %s",
+                                logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s",
                                        "setpriority", strerror(errno));
                                 goto end;
                         }
                 } else {
-                        logger(LOG_ERR, "Invalid priority `%s`!", priority);
+                        logger(DEBUG_ALWAYS, LOG_ERR, "Invalid priority `%s`!", priority);
                         goto end;
                 }
         }
@@ -482,8 +488,8 @@ int main2(int argc, char **argv) {
 
        /* Shutdown properly. */
 
-       ifdebug(CONNECTIONS)
-               dump_device_stats();
+       if(debug_level >= DEBUG_CONNECTIONS)
+               devops.dump_stats();
 
        close_network_connections();
 
@@ -491,11 +497,14 @@ end:
        exit_control();
 
 end_nonet:
-       logger(LOG_NOTICE, "Terminating");
+       logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating");
+
+       free(priority);
 
        crypto_exit();
 
        exit_configuration(&config_tree);
+       free(cmdline_conf);
        free_names();
 
        return status;