Merge branch 'master' into 1.1
[tinc] / src / tincd.c
index 8401b20..fc92f0b 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;
@@ -176,9 +177,7 @@ static bool parse_options(int argc, char **argv) {
                                break;
 
                        case 'n':                               /* net name given */
-                               /* netname "." is special: a "top-level name" */
-                               netname = strcmp(optarg, ".") != 0 ?
-                                               xstrdup(optarg) : NULL;
+                               netname = xstrdup(optarg);
                                break;
 
                        case 'o':                               /* option */
@@ -227,6 +226,21 @@ static bool parse_options(int argc, char **argv) {
                }
        }
 
+       if(!netname && (netname = getenv("NETNAME")))
+               netname = xstrdup(netname);
+
+       /* netname "." is special: a "top-level name" */
+
+       if(netname && (!*netname || !strcmp(netname, "."))) {
+               free(netname);
+               netname = NULL;
+       }
+
+       if(netname && (strpbrk(netname, "\\/") || *netname == '.')) {
+               fprintf(stderr, "Invalid character in netname!\n");
+               return false;
+       }
+
        return true;
 }
 
@@ -249,15 +263,15 @@ static void make_names(void) {
        if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
                if(!RegQueryValueEx(key, NULL, 0, 0, installdir, &len)) {
                        if(!logfilename)
-                               xasprintf(&logfilename, "%s/log/%s.log", identname);
+                               xasprintf(&logfilename, "%s" SLASH "log" SLASH "%s.log", identname);
                        if(!confbase) {
                                if(netname)
-                                       xasprintf(&confbase, "%s/%s", installdir, netname);
+                                       xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
                                else
                                        xasprintf(&confbase, "%s", installdir);
                        }
                        if(!pidfilename)
-                               xasprintf(&pidfilename, "%s/pid", confbase);
+                               xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
                }
                RegCloseKey(key);
                if(*installdir)
@@ -266,19 +280,19 @@ static void make_names(void) {
 #endif
 
        if(!logfilename)
-               xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
+               xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
 
        if(!pidfilename)
-               xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
+               xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
 
        if(netname) {
                if(!confbase)
-                       xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
+                       xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%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");
+                       xasprintf(&confbase, CONFDIR SLASH "tinc");
        }
 }
 
@@ -293,11 +307,11 @@ 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
@@ -305,23 +319,26 @@ 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;
                }
+#ifndef __ANDROID__
+// Not supported in android NDK
                endgrent();
                endpwent();
+#endif
        }
        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 +347,7 @@ 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;
                }
@@ -358,7 +375,7 @@ int main(int argc, char **argv) {
        if(show_version) {
                printf("%s version %s (built %s %s, protocol %d.%d)\n", PACKAGE,
                           VERSION, __DATE__, __TIME__, PROT_MAJOR, PROT_MINOR);
-               printf("Copyright (C) 1998-2011 Ivo Timmermans, Guus Sliepen and others.\n"
+               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"
@@ -374,20 +391,21 @@ 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
 
        openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
 
-       if(!event_init()) {
-               logger(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 +418,7 @@ 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 +434,7 @@ int main2(int argc, char **argv) {
        InitializeCriticalSection(&mutex);
        EnterCriticalSection(&mutex);
 #endif
+        char *priority = NULL;
 
        if(!detach())
                return 1;
@@ -425,12 +444,17 @@ 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;
        }
 #endif
 
+       if(!event_init()) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error initializing libevent!");
+               return 1;
+       }
+
        /* Setup sockets and open device. */
 
        if(!setup_network())
@@ -445,29 +469,27 @@ 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 +504,8 @@ 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 +513,14 @@ 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;