X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Ftincd.c;h=9f94d8942ef1155c69b62932db643b27b14ddd28;hp=21623647fb1eb0be7876a74c49fa16d19263494b;hb=d917c8cb6b69475d568ccbe82389b9f2b3eb5e80;hpb=103543aa2c15d9f1e2aa313a2e593a7524cce484 diff --git a/src/tincd.c b/src/tincd.c index 21623647..9f94d894 100644 --- a/src/tincd.c +++ b/src/tincd.c @@ -1,9 +1,11 @@ /* tincd.c -- the main file for tincd Copyright (C) 1998-2005 Ivo Timmermans - 2000-2010 Guus Sliepen + 2000-2012 Guus Sliepen 2008 Max Rijevski 2009 Michael Tokarev + 2010 Julien Muchembled + 2010 Timothy Redaelli 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 @@ -65,16 +67,16 @@ char *program_name = NULL; /* If nonzero, display usage information and exit. */ -bool show_help = false; +static bool show_help = false; /* If nonzero, print the version on standard output and exit. */ -bool show_version = false; +static bool show_version = false; /* If nonzero, use null ciphers and skip all key exchanges. */ bool bypass_security = false; /* If nonzero, disable swapping for this process. */ -bool do_mlock = false; +static bool do_mlock = false; /* If nonzero, chroot to netdir after startup. */ static bool do_chroot = false; @@ -85,12 +87,12 @@ static const char *switchuser = NULL; /* If nonzero, write log entries to a separate file. */ bool use_logfile = false; -char *identname = NULL; /* program name for syslog */ -char *logfilename = NULL; /* log file location */ -char *controlcookiename = NULL; -char **g_argv; /* a copy of the cmdline arguments */ +char *identname = NULL; /* program name for syslog */ +char *logfilename = NULL; /* log file location */ +char *pidfilename = NULL; +char **g_argv; /* a copy of the cmdline arguments */ -static int status; +static int status = 1; static struct option const long_options[] = { {"config", required_argument, NULL, 'c'}, @@ -104,13 +106,15 @@ static struct option const long_options[] = { {"chroot", no_argument, NULL, 'R'}, {"user", required_argument, NULL, 'U'}, {"logfile", optional_argument, NULL, 4}, - {"controlcookie", required_argument, NULL, 5}, + {"pidfile", required_argument, NULL, 5}, + {"option", required_argument, NULL, 'o'}, {NULL, 0, NULL, 0} }; #ifdef HAVE_MINGW static struct WSAData wsa_state; CRITICAL_SECTION mutex; +int main2(int argc, char **argv); #endif static void usage(bool status) { @@ -119,89 +123,101 @@ 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" + 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" - " --controlcookie=FILENAME Write control socket cookie to FILENAME.\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" + " -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"); } } static bool parse_options(int argc, char **argv) { + config_t *cfg; int r; int option_index = 0; + int lineno = 0; - while((r = getopt_long(argc, argv, "c:DLd::n:RU:", long_options, &option_index)) != EOF) { + cmdline_conf = list_alloc((list_action_t)free_config); + + while((r = getopt_long(argc, argv, "c:DLd::n:o:RU:", long_options, &option_index)) != EOF) { switch (r) { - case 0: /* long option */ + case 0: /* long option */ break; - case 'c': /* config file */ + case 'c': /* config file */ confbase = xstrdup(optarg); break; - case 'D': /* no detach */ + case 'D': /* no detach */ do_detach = false; break; - case 'L': /* no detach */ + 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; break; #endif - case 'd': /* inc debug level */ + case 'd': /* inc debug level */ if(optarg) debug_level = atoi(optarg); else debug_level++; break; - case 'n': /* net name given */ + case 'n': /* net name given */ netname = xstrdup(optarg); break; - case 'R': /* chroot to NETNAME dir */ + case 'o': /* option */ + cfg = parse_config_line(optarg, NULL, ++lineno); + if (!cfg) + return false; + list_insert_tail(cmdline_conf, cfg); + break; + + case 'R': /* chroot to NETNAME dir */ do_chroot = true; break; - case 'U': /* setuid to USER */ + case 'U': /* setuid to USER */ switchuser = optarg; break; - case 1: /* show help */ + case 1: /* show help */ show_help = true; break; - case 2: /* show version */ + case 2: /* show version */ show_version = true; break; - case 3: /* bypass security */ + case 3: /* bypass security */ bypass_security = true; break; - case 4: /* write log entries to a file */ + case 4: /* write log entries to a file */ use_logfile = true; if(optarg) logfilename = xstrdup(optarg); break; - case 5: /* open control socket here */ - controlcookiename = xstrdup(optarg); + case 5: /* open control socket here */ + pidfilename = xstrdup(optarg); break; - case '?': + case '?': /* wrong options */ usage(true); return false; @@ -210,6 +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; } @@ -232,15 +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(!controlcookiename) - xasprintf(&controlcookiename, "%s/cookie", confbase); + if(!pidfilename) + xasprintf(&pidfilename, "%s" SLASH "pid", confbase); } RegCloseKey(key); if(*installdir) @@ -249,38 +280,38 @@ 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(!controlcookiename) - xasprintf(&controlcookiename, LOCALSTATEDIR "/run/%s.cookie", identname); + if(!pidfilename) + 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"); } } -static void free_names() { +static void free_names(void) { if (identname) free(identname); if (netname) free(netname); - if (controlcookiename) free(controlcookiename); + if (pidfilename) free(pidfilename); if (logfilename) free(logfilename); if (confbase) free(confbase); } -static bool drop_privs() { +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 @@ -288,23 +319,26 @@ static bool drop_privs() { 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 */ + 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; } @@ -313,7 +347,7 @@ static bool drop_privs() { } 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; } @@ -322,12 +356,12 @@ static bool drop_privs() { } #ifdef HAVE_MINGW -# define setpriority(level) SetPriorityClass(GetCurrentProcess(), level) +# define setpriority(level) !SetPriorityClass(GetCurrentProcess(), (level)) #else # define NORMAL_PRIORITY_CLASS 0 # define BELOW_NORMAL_PRIORITY_CLASS 10 # define HIGH_PRIORITY_CLASS -10 -# define setpriority(level) nice(level) +# define setpriority(level) (setpriority(PRIO_PROCESS, 0, (level))) #endif int main(int argc, char **argv) { @@ -335,13 +369,13 @@ int main(int argc, char **argv) { if(!parse_options(argc, argv)) return 1; - + make_names(); if(show_version) { - printf("%s version %s (built %s %s, protocol %d)\n", PACKAGE, - VERSION, __DATE__, __TIME__, PROT_CURRENT); - printf("Copyright (C) 1998-2010 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" @@ -357,20 +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! */ @@ -383,7 +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 @@ -399,6 +434,7 @@ int main2(int argc, char **argv) { InitializeCriticalSection(&mutex); EnterCriticalSection(&mutex); #endif + char *priority = NULL; if(!detach()) return 1; @@ -408,19 +444,24 @@ 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()) - goto end; + goto end_nonet; if(!init_control()) - return 1; + goto end_nonet; /* Initiate all outgoing connections. */ @@ -428,20 +469,27 @@ int main2(int argc, char **argv) { /* Change process priority */ - char *priority = 0; - - if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) { - if(!strcasecmp(priority, "Normal")) - setpriority(NORMAL_PRIORITY_CLASS); - else if(!strcasecmp(priority, "Low")) - setpriority(BELOW_NORMAL_PRIORITY_CLASS); - else if(!strcasecmp(priority, "High")) - setpriority(HIGH_PRIORITY_CLASS); - else { - logger(LOG_ERR, "Invalid priority `%s`!", priority); - goto end; - } - } + if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) { + if(!strcasecmp(priority, "Normal")) { + if (setpriority(NORMAL_PRIORITY_CLASS) != 0) { + 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(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(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "setpriority", strerror(errno)); + goto end; + } + } else { + logger(DEBUG_ALWAYS, LOG_ERR, "Invalid priority `%s`!", priority); + goto end; + } + } /* drop privileges */ if (!drop_privs()) @@ -453,19 +501,23 @@ int main2(int argc, char **argv) { /* Shutdown properly. */ - ifdebug(CONNECTIONS) - dump_device_stats(); + if(debug_level >= DEBUG_CONNECTIONS) + devops.dump_stats(); close_network_connections(); end: - logger(LOG_NOTICE, "Terminating"); - exit_control(); +end_nonet: + logger(DEBUG_ALWAYS, LOG_NOTICE, "Terminating"); + + free(priority); + crypto_exit(); exit_configuration(&config_tree); + free(cmdline_conf); free_names(); return status;