Merge branch 'master' into 1.1
[oweals/tinc.git] / src / tincd.c
index 3dab9a01157b5751c14a65f24fc3d82ae94ea94f..c4750da20c0c8b6991285a4ceeb25cea4778dd29 100644 (file)
 #endif
 
 #include <getopt.h>
-#include "pidfile.h"
 
 #include "conf.h"
+#include "control.h"
+#include "crypto.h"
 #include "device.h"
 #include "logger.h"
 #include "net.h"
@@ -71,12 +72,6 @@ bool show_help = false;
 /* If nonzero, print the version on standard output and exit.  */
 bool show_version = false;
 
-/* If nonzero, it will attempt to kill a running tincd and exit. */
-int kill_tincd = 0;
-
-/* If nonzero, generate public/private keypair for this host/net. */
-int generate_keys = 0;
-
 /* If nonzero, use null ciphers and skip all key exchanges. */
 bool bypass_security = false;
 
@@ -93,27 +88,25 @@ static const char *switchuser = NULL;
 bool use_logfile = false;
 
 char *identname = NULL;                                /* program name for syslog */
-char *pidfilename = NULL;                      /* pid file location */
 char *logfilename = NULL;                      /* log file location */
+char *controlcookiename = NULL;
 char **g_argv;                                 /* a copy of the cmdline arguments */
 
 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, 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, NULL, 3},
        {"mlock", no_argument, NULL, 'L'},
        {"chroot", no_argument, NULL, 'R'},
        {"user", required_argument, NULL, 'U'},
        {"logfile", optional_argument, NULL, 4},
-       {"pidfile", required_argument, NULL, 5},
+       {"controlcookie", required_argument, NULL, 5},
        {NULL, 0, NULL, 0}
 };
 
@@ -129,20 +122,18 @@ 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"
-                               "  -k, --kill[=SIGNAL]        Attempt to kill a running tincd and exit.\n"
-                               "  -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"
-                               "  -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"
+                               "      --controlcookie=FILENAME  Write 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("Report bugs to tinc@tinc-vpn.org.\n");
        }
 }
@@ -155,7 +146,7 @@ static bool parse_options(int argc, char **argv) {
 
        cmdline_conf = list_alloc((list_action_t)free_config);
 
-       while((r = getopt_long(argc, argv, "c:DLd::k::n:o:K::RU:", long_options, &option_index)) != EOF) {
+       while((r = getopt_long(argc, argv, "c:DLd::n:o:RU:", long_options, &option_index)) != EOF) {
                switch (r) {
                        case 0:                         /* long option */
                                break;
@@ -184,42 +175,6 @@ static bool parse_options(int argc, char **argv) {
                                        debug_level++;
                                break;
 
-                       case 'k':                               /* kill old tincds */
-#ifndef HAVE_MINGW
-                               if(optarg) {
-                                       if(!strcasecmp(optarg, "HUP"))
-                                               kill_tincd = SIGHUP;
-                                       else if(!strcasecmp(optarg, "TERM"))
-                                               kill_tincd = SIGTERM;
-                                       else if(!strcasecmp(optarg, "KILL"))
-                                               kill_tincd = SIGKILL;
-                                       else if(!strcasecmp(optarg, "USR1"))
-                                               kill_tincd = SIGUSR1;
-                                       else if(!strcasecmp(optarg, "USR2"))
-                                               kill_tincd = SIGUSR2;
-                                       else if(!strcasecmp(optarg, "WINCH"))
-                                               kill_tincd = SIGWINCH;
-                                       else if(!strcasecmp(optarg, "INT"))
-                                               kill_tincd = SIGINT;
-                                       else if(!strcasecmp(optarg, "ALRM"))
-                                               kill_tincd = SIGALRM;
-                                       else {
-                                               kill_tincd = atoi(optarg);
-
-                                               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(true);
-                                                       return false;
-                                               }
-                                       }
-                               } else
-                                       kill_tincd = SIGTERM;
-#else
-                                       kill_tincd = 1;
-#endif
-                               break;
-
                        case 'n':                               /* net name given */
                                /* netname "." is special: a "top-level name" */
                                netname = strcmp(optarg, ".") != 0 ?
@@ -233,22 +188,6 @@ static bool parse_options(int argc, char **argv) {
                                list_insert_tail(cmdline_conf, cfg);
                                break;
 
-                       case 'K':                               /* generate public/private keypair */
-                               if(optarg) {
-                                       generate_keys = atoi(optarg);
-
-                                       if(generate_keys < 512) {
-                                               fprintf(stderr, "Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n",
-                                                               optarg);
-                                               usage(true);
-                                               return false;
-                                       }
-
-                                       generate_keys &= ~7;    /* Round it to bytes */
-                               } else
-                                       generate_keys = 2048;
-                               break;
-
                        case 'R':                               /* chroot to NETNAME dir */
                                do_chroot = true;
                                break;
@@ -275,8 +214,8 @@ static bool parse_options(int argc, char **argv) {
                                        logfilename = xstrdup(optarg);
                                break;
 
-                       case 5:                                 /* write PID to a file */
-                               pidfilename = xstrdup(optarg);
+                       case 5:                                 /* open control socket here */
+                               controlcookiename = xstrdup(optarg);
                                break;
 
                        case '?':
@@ -291,110 +230,6 @@ static bool parse_options(int argc, char **argv) {
        return true;
 }
 
-/* This function prettyprints the key generation process */
-
-static void indicator(int a, int b, void *p) {
-       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, "?");
-       }
-}
-
-/*
-  Generate a public/private RSA keypair, and ask for a file to store
-  them in.
-*/
-static bool keygen(int bits) {
-       RSA *rsa_key;
-       FILE *f;
-       char *name = NULL;
-       char *filename;
-
-       get_config_string(lookup_config(config_tree, "Name"), &name);
-
-       if(name && !check_id(name)) {
-               fprintf(stderr, "Invalid name for myself!\n");
-               return false;
-       }
-
-       fprintf(stderr, "Generating %d bits keys:\n", bits);
-       rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL);
-
-       if(!rsa_key) {
-               fprintf(stderr, "Error during key generation!\n");
-               return false;
-       } else
-               fprintf(stderr, "Done.\n");
-
-       xasprintf(&filename, "%s/rsa_key.priv", confbase);
-       f = ask_and_open(filename, "private RSA key");
-
-       if(!f)
-               return false;
-
-       if(disable_old_keys(f))
-               fprintf(stderr, "Warning: old key(s) found and disabled.\n");
-  
-#ifdef HAVE_FCHMOD
-       /* Make it unreadable for others. */
-       fchmod(fileno(f), 0600);
-#endif
-               
-       fputc('\n', f);
-       PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
-       fclose(f);
-       free(filename);
-
-       if(name)
-               xasprintf(&filename, "%s/hosts/%s", confbase, name);
-       else
-               xasprintf(&filename, "%s/rsa_key.pub", confbase);
-
-       f = ask_and_open(filename, "public RSA key");
-
-       if(!f)
-               return false;
-
-       if(disable_old_keys(f))
-               fprintf(stderr, "Warning: old key(s) found and disabled.\n");
-
-       fputc('\n', f);
-       PEM_write_RSAPublicKey(f, rsa_key);
-       fclose(f);
-       free(filename);
-       if(name)
-               free(name);
-
-       return true;
-}
-
 /*
   Set all files and paths according to netname
 */
@@ -402,7 +237,7 @@ static void make_names(void) {
 #ifdef HAVE_MINGW
        HKEY key;
        char installdir[1024] = "";
-       long len = sizeof(installdir);
+       long len = sizeof installdir;
 #endif
 
        if(netname)
@@ -421,6 +256,8 @@ static void make_names(void) {
                                else
                                        xasprintf(&confbase, "%s", installdir);
                        }
+                       if(!controlcookiename)
+                               xasprintf(&controlcookiename, "%s/cookie", confbase);
                }
                RegCloseKey(key);
                if(*installdir)
@@ -428,12 +265,12 @@ static void make_names(void) {
        }
 #endif
 
-       if(!pidfilename)
-               xasprintf(&pidfilename, LOCALSTATEDIR "/run/%s.pid", identname);
-
        if(!logfilename)
                xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
 
+       if(!controlcookiename)
+               xasprintf(&controlcookiename, LOCALSTATEDIR "/run/%s.cookie", identname);
+
        if(netname) {
                if(!confbase)
                        xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
@@ -448,7 +285,7 @@ static void make_names(void) {
 static void free_names() {
        if (identname) free(identname);
        if (netname) free(netname);
-       if (pidfilename) free(pidfilename);
+       if (controlcookiename) free(controlcookiename);
        if (logfilename) free(logfilename);
        if (confbase) free(confbase);
 }
@@ -535,28 +372,28 @@ int main(int argc, char **argv) {
                return 0;
        }
 
-       if(kill_tincd)
-               return !kill_other(kill_tincd);
+#ifdef HAVE_MINGW
+       if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
+               logger(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;
 
        init_configuration(&config_tree);
 
        /* Slllluuuuuuurrrrp! */
 
-       RAND_load_file("/dev/urandom", 1024);
-
-       ENGINE_load_builtin_engines();
-       ENGINE_register_all_complete();
-
-       OpenSSL_add_all_algorithms();
-
-       if(generate_keys) {
-               read_server_config();
-               return !keygen(generate_keys);
-       }
+       srand(time(NULL));
+       crypto_init();
 
        if(!read_server_config())
                return 1;
@@ -569,11 +406,6 @@ int main(int argc, char **argv) {
 #endif
 
 #ifdef HAVE_MINGW
-       if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
-               logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
-               return 1;
-       }
-
        if(!do_detach || !init_service())
                return main2(argc, argv);
        else
@@ -604,6 +436,9 @@ int main2(int argc, char **argv) {
        if(!setup_network())
                goto end;
 
+       if(!init_control())
+               return 1;
+
        /* Initiate all outgoing connections. */
 
        try_outgoing_connections();
@@ -655,15 +490,9 @@ int main2(int argc, char **argv) {
 end:
        logger(LOG_NOTICE, "Terminating");
 
-#ifndef HAVE_MINGW
-       remove_pid(pidfilename);
-#endif
+       exit_control();
 
-       EVP_cleanup();
-       ENGINE_cleanup();
-       CRYPTO_cleanup_all_ex_data();
-       ERR_remove_state(0);
-       ERR_free_strings();
+       crypto_exit();
 
        exit_configuration(&config_tree);
        free_names();