X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Ftincd.c;h=ebee1b3bd932ee3ec427bf1b894a37f315e63a8f;hp=2aa16dd40cb1bd3d90cb444277ca86cb312e642e;hb=eeb97e3ef4eb9089851f7b71d5393df24313c993;hpb=5eca9520d93bced1275d45e5e2a933d69354cd6d diff --git a/src/tincd.c b/src/tincd.c index 2aa16dd4..ebee1b3b 100644 --- a/src/tincd.c +++ b/src/tincd.c @@ -1,7 +1,7 @@ /* tincd.c -- the main file for tincd - Copyright (C) 1998-2002 Ivo Timmermans - 2000-2002 Guus Sliepen + Copyright (C) 1998-2003 Ivo Timmermans + 2000-2003 Guus Sliepen 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 @@ -17,32 +17,18 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: tincd.c,v 1.10.4.65 2002/09/15 14:55:54 guus Exp $ + $Id: tincd.c,v 1.10.4.88 2003/09/25 10:34:16 guus Exp $ */ -#include "config.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include "system.h" /* Darwin (MacOS/X) needs the following definition... */ #ifndef _P1003_1B_VISIBLE #define _P1003_1B_VISIBLE #endif +#ifdef HAVE_SYS_MMAN_H #include - -#ifdef HAVE_SYS_IOCTL_H -# include #endif #include @@ -50,26 +36,28 @@ #include #include -#include -#include +#include + +#include #include "conf.h" +#include "device.h" +#include "logger.h" #include "net.h" #include "netutl.h" #include "process.h" #include "protocol.h" -#include "subnet.h" - -#include "system.h" +#include "utils.h" +#include "xalloc.h" /* The name this program was run with. */ -char *program_name; +char *program_name = NULL; /* If nonzero, display usage information and exit. */ -int show_help; +bool show_help = false; /* If nonzero, print the version on standard output and exit. */ -int show_version; +bool show_version = false; /* If nonzero, it will attempt to kill a running tincd and exit. */ int kill_tincd = 0; @@ -78,34 +66,44 @@ int kill_tincd = 0; int generate_keys = 0; /* If nonzero, use null ciphers and skip all key exchanges. */ -int bypass_security = 0; +bool bypass_security = false; /* If nonzero, disable swapping for this process. */ -int do_mlock = 0; +bool do_mlock = false; + +/* If nonzero, write log entries to a separate file. */ +bool use_logfile = false; -char *identname; /* program name for syslog */ -char *pidfilename; /* pid file location */ +char *identname = NULL; /* program name for syslog */ +char *pidfilename = NULL; /* pid file location */ +char *logfilename = NULL; /* log file location */ char **g_argv; /* a copy of the cmdline arguments */ -char **environment; /* A pointer to the environment on - startup */ + +static int status; static struct option const long_options[] = { {"config", required_argument, NULL, 'c'}, {"kill", optional_argument, NULL, 'k'}, {"net", required_argument, NULL, 'n'}, - {"help", no_argument, &show_help, 1}, - {"version", no_argument, &show_version, 1}, - {"no-detach", no_argument, &do_detach, 0}, + {"help", no_argument, NULL, 1}, + {"version", no_argument, NULL, 2}, + {"no-detach", no_argument, NULL, 'D'}, {"generate-keys", optional_argument, NULL, 'K'}, {"debug", optional_argument, NULL, 'd'}, - {"bypass-security", no_argument, &bypass_security, 1}, - {"mlock", no_argument, &do_mlock, 1}, + {"bypass-security", no_argument, NULL, 3}, + {"mlock", no_argument, NULL, 'L'}, + {"logfile", optional_argument, NULL, 4}, + {"pidfile", required_argument, NULL, 5}, {NULL, 0, NULL, 0} }; -static void usage(int status) +#ifdef HAVE_MINGW +static struct WSAData wsa_state; +#endif + +static void usage(bool status) { - if(status != 0) + if(status) fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name); else { @@ -117,15 +115,15 @@ static void usage(int status) " -n, --net=NETNAME Connect to net NETNAME.\n" " -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n" " -L, --mlock Lock tinc into main memory.\n" + " --logfile[=FILENAME] Write log entries to a logfile.\n" + " --pidfile=FILENAME Write PID to FILENAME.\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); } -void parse_options(int argc, char **argv, char **envp) +static bool parse_options(int argc, char **argv) { int r; int option_index = 0; @@ -136,26 +134,26 @@ void parse_options(int argc, char **argv, char **envp) break; case 'c': /* config file */ - confbase = xmalloc(strlen(optarg) + 1); - strcpy(confbase, optarg); + confbase = xstrdup(optarg); break; case 'D': /* no detach */ - do_detach = 0; + do_detach = false; break; case 'L': /* no detach */ - do_mlock = 1; + do_mlock = true; break; case 'd': /* inc debug level */ if(optarg) - debug_lvl = atoi(optarg); + debug_level = atoi(optarg); else - debug_lvl++; + debug_level++; break; case 'k': /* kill old tincds */ +#ifndef HAVE_MINGW if(optarg) { if(!strcasecmp(optarg, "HUP")) kill_tincd = SIGHUP; @@ -179,16 +177,19 @@ void parse_options(int argc, char **argv, char **envp) if(!kill_tincd) { fprintf(stderr, _("Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n"), optarg); - usage(1); + usage(true); + return false; } } } else kill_tincd = SIGTERM; +#else + kill_tincd = 1; +#endif break; case 'n': /* net name given */ - netname = xmalloc(strlen(optarg) + 1); - strcpy(netname, optarg); + netname = xstrdup(optarg); break; case 'K': /* generate public/private keypair */ @@ -198,7 +199,8 @@ void parse_options(int argc, char **argv, char **envp) if(generate_keys < 512) { fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"), optarg); - usage(1); + usage(true); + return false; } generate_keys &= ~7; /* Round it to bytes */ @@ -206,18 +208,43 @@ void parse_options(int argc, char **argv, char **envp) generate_keys = 1024; break; + case 1: /* show help */ + show_help = true; + break; + + case 2: /* show version */ + show_version = true; + break; + + case 3: /* bypass security */ + bypass_security = true; + break; + + case 4: /* write log entries to a file */ + use_logfile = true; + if(optarg) + logfilename = xstrdup(optarg); + break; + + case 5: /* write PID to a file */ + pidfilename = xstrdup(optarg); + break; + case '?': - usage(1); + usage(true); + return false; default: break; } } + + return true; } /* This function prettyprints the key generation process */ -void indicator(int a, int b, void *p) +static void indicator(int a, int b, void *p) { switch (a) { case 0: @@ -256,7 +283,7 @@ void indicator(int a, int b, void *p) Generate a public/private RSA keypair, and ask for a file to store them in. */ -int keygen(int bits) +static bool keygen(int bits) { RSA *rsa_key; FILE *f; @@ -264,78 +291,106 @@ int keygen(int bits) char *filename; fprintf(stderr, _("Generating %d bits keys:\n"), bits); - rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL); + rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL); if(!rsa_key) { fprintf(stderr, _("Error during key generation!\n")); - return -1; + return false; } else fprintf(stderr, _("Done.\n")); - get_config_string(lookup_config(config_tree, "Name"), &name); - - if(name) - asprintf(&filename, "%s/hosts/%s", confbase, name); - else - asprintf(&filename, "%s/rsa_key.pub", confbase); - - f = ask_and_safe_open(filename, _("public RSA key"), "a"); + asprintf(&filename, "%s/rsa_key.priv", confbase); + f = ask_and_open(filename, _("private RSA key"), "a"); if(!f) - return -1; - + return false; + +#ifdef HAVE_FCHMOD + /* Make it unreadable for others. */ + fchmod(fileno(f), 0600); +#endif + if(ftell(f)) fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n")); - PEM_write_RSAPublicKey(f, rsa_key); + PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL); fclose(f); free(filename); - asprintf(&filename, "%s/rsa_key.priv", confbase); - f = ask_and_safe_open(filename, _("private RSA key"), "a"); + get_config_string(lookup_config(config_tree, "Name"), &name); + + if(name) + asprintf(&filename, "%s/hosts/%s", confbase, name); + else + asprintf(&filename, "%s/rsa_key.pub", confbase); + + f = ask_and_open(filename, _("public RSA key"), "a"); if(!f) - return -1; + return false; if(ftell(f)) fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n")); - PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL); + PEM_write_RSAPublicKey(f, rsa_key); fclose(f); free(filename); - return 0; + return true; } /* Set all files and paths according to netname */ -void make_names(void) +static void make_names(void) { - if(netname) { - if(!pidfilename) - asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname); +#ifdef HAVE_MINGW + HKEY key; + char installdir[1024] = ""; + long len = sizeof(installdir); +#endif + + if(netname) + asprintf(&identname, "tinc.%s", netname); + else + identname = xstrdup("tinc"); + +#ifdef HAVE_MINGW + if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) { + if(!RegQueryValueEx(key, NULL, 0, 0, installdir, &len)) { + if(!logfilename) + asprintf(&logfilename, "%s/log/%s.log", identname); + if(!confbase) { + if(netname) + asprintf(&confbase, "%s/%s", installdir, netname); + else + asprintf(&confbase, "%s", installdir); + } + } + RegCloseKey(key); + if(*installdir) + return; + } +#endif + + if(!pidfilename) + asprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname); + + if(!logfilename) + asprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname); + if(netname) { if(!confbase) - asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname); + asprintf(&confbase, CONFDIR "/tinc/%s", netname); else - syslog(LOG_INFO, _("Both netname and configuration directory given, using the latter...")); - - if(!identname) - asprintf(&identname, "tinc.%s", netname); + logger(LOG_INFO, _("Both netname and configuration directory given, using the latter...")); } else { - if(!pidfilename) - pidfilename = LOCALSTATEDIR "/run/tinc.pid"; - if(!confbase) - asprintf(&confbase, "%s/tinc", CONFDIR); - - if(!identname) - identname = "tinc"; + asprintf(&confbase, CONFDIR "/tinc"); } } -int main(int argc, char **argv, char **envp) +int main(int argc, char **argv) { program_name = argv[0]; @@ -343,13 +398,15 @@ int main(int argc, char **argv, char **envp) bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); - environment = envp; - parse_options(argc, argv, envp); + 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) 1998-2002 Ivo Timmermans, Guus Sliepen and others.\n" + printf(_("Copyright (C) 1998-2003 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" @@ -358,73 +415,101 @@ int main(int argc, char **argv, char **envp) return 0; } - if(show_help) - usage(0); + if(show_help) { + usage(false); + return 0; + } -#ifndef LOG_PERROR - openlog("tinc", LOG_CONS, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */ -#else - openlog("tinc", LOG_PERROR, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */ -#endif + if(kill_tincd) + return !kill_other(kill_tincd); + + openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR); /* Lock all pages into memory if requested */ if(do_mlock) #ifdef HAVE_MLOCKALL if(mlockall(MCL_CURRENT | MCL_FUTURE)) { - syslog(LOG_ERR, _("System call `%s' failed: %s"), "mlockall", + logger(LOG_ERR, _("System call `%s' failed: %s"), "mlockall", strerror(errno)); #else { - syslog(LOG_ERR, _("mlockall() not supported on this platform!")); + logger(LOG_ERR, _("mlockall() not supported on this platform!")); #endif return -1; } g_argv = argv; - make_names(); init_configuration(&config_tree); /* Slllluuuuuuurrrrp! */ RAND_load_file("/dev/urandom", 1024); -#ifdef HAVE_SSLEAY_ADD_ALL_ALGORITHMS - SSLeay_add_all_algorithms(); -#else OpenSSL_add_all_algorithms(); -#endif if(generate_keys) { read_server_config(); - exit(keygen(generate_keys)); + return !keygen(generate_keys); } - if(kill_tincd) - exit(kill_other(kill_tincd)); + if(!read_server_config()) + return 1; - if(read_server_config()) - exit(1); + if(lzo_init() != LZO_E_OK) { + logger(LOG_ERR, _("Error initializing LZO compressor!")); + return 1; + } - if(detach()) - exit(0); +#ifdef HAVE_MINGW + if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) { + logger(LOG_ERR, _("System call `%s' failed: %s"), "WSAStartup", winerror(GetLastError())); + return 1; + } - for(;;) { - if(!setup_network_connections()) { - main_loop(); - cleanup_and_exit(1); - } + if(!do_detach || !init_service()) + return main2(argc, argv); + else + return 1; +} - syslog(LOG_ERR, _("Unrecoverable error")); - cp_trace(); +int main2(int argc, char **argv) +{ +#endif + + if(!detach()) + return 1; + + + /* Setup sockets and open device. If it doesn't work, don't give up but try again. */ + while(!setup_network_connections()) { if(do_detach) { - syslog(LOG_NOTICE, _("Restarting in %d seconds!"), maxtimeout); + logger(LOG_NOTICE, _("Restarting in %d seconds!"), maxtimeout); sleep(maxtimeout); } else { - syslog(LOG_ERR, _("Not restarting.")); - exit(1); + logger(LOG_ERR, _("Not restarting.")); + return 1; } } + + /* Start main loop. It only exits when tinc is killed. */ + + status = main_loop(); + + /* Shutdown properly. */ + + close_network_connections(); + + ifdebug(CONNECTIONS) + dump_device_stats(); + + logger(LOG_NOTICE, _("Terminating")); + +#ifndef HAVE_MINGW + remove_pid(pidfilename); +#endif + + return status; }