--- /dev/null
+/*
+ control.c -- Control socket handling.
+ Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
+
+ 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
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ $Id$
+*/
+
+#include <sys/un.h>
+
+#include "system.h"
+#include "conf.h"
+#include "control.h"
+#include "logger.h"
+#include "xalloc.h"
+
+static int control_socket = -1;
+static struct event control_event;
+static splay_tree_t *control_socket_tree;
+extern char *controlfilename;
+
+static void handle_control_data(int fd, short events, void *event) {
+ char buf[MAXBUFSIZE];
+ size_t inlen;
+
+ inlen = read(fd, buf, sizeof buf);
+
+ if(inlen <= 0) {
+ logger(LOG_DEBUG, _("Closing control socket"));
+ event_del(event);
+ splay_delete(control_socket_tree, event);
+ close(fd);
+ }
+}
+
+static void handle_new_control_socket(int fd, short events, void *data) {
+ int newfd;
+ struct event *ev;
+
+ newfd = accept(fd, NULL, NULL);
+
+ if(newfd < 0) {
+ logger(LOG_ERR, _("Accepting a new connection failed: %s"), strerror(errno));
+ event_del(&control_event);
+ return;
+ }
+
+ ev = xmalloc(sizeof *ev);
+ event_set(ev, newfd, EV_READ | EV_PERSIST, handle_control_data, ev);
+ event_add(ev, NULL);
+ splay_insert(control_socket_tree, ev);
+
+ logger(LOG_DEBUG, _("Control socket connection accepted"));
+}
+
+static int control_compare(const struct event *a, const struct event *b) {
+ return a < b ? -1 : a > b ? 1 : 0;
+}
+
+void init_control() {
+ struct sockaddr_un addr;
+
+ control_socket_tree = splay_alloc_tree((splay_compare_t)control_compare, (splay_action_t)free);
+
+ if(strlen(controlfilename) >= sizeof addr.sun_path) {
+ logger(LOG_ERR, _("Control socket filename too long!"));
+ return;
+ }
+
+ memset(&addr, 0, sizeof addr);
+ addr.sun_family = AF_UNIX;
+ strncpy(addr.sun_path, controlfilename, sizeof addr.sun_path - 1);
+
+ control_socket = socket(PF_UNIX, SOCK_STREAM, 0);
+
+ if(control_socket < 0) {
+ logger(LOG_ERR, _("Creating UNIX socket failed: %s"), strerror(errno));
+ return;
+ }
+
+ unlink(controlfilename);
+ if(bind(control_socket, (struct sockaddr *)&addr, sizeof addr) < 0) {
+ logger(LOG_ERR, _("Can't bind to %s: %s\n"), controlfilename, strerror(errno));
+ close(control_socket);
+ return;
+ }
+
+ if(listen(control_socket, 3) < 0) {
+ logger(LOG_ERR, _("Can't listen on %s: %s\n"), controlfilename, strerror(errno));
+ close(control_socket);
+ return;
+ }
+
+ event_set(&control_event, control_socket, EV_READ | EV_PERSIST, handle_new_control_socket, NULL);
+ event_add(&control_event, NULL);
+}
+
+void exit_control() {
+ if(control_socket >= 0) {
+ event_del(&control_event);
+ close(control_socket);
+ }
+}
--- /dev/null
+/*
+ tincctl.c -- Controlling a running tincd
+ Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
+
+ 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
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ $Id$
+*/
+
+#include "system.h"
+
+#include <sys/un.h>
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/evp.h>
+#include <openssl/engine.h>
+
+#include <getopt.h>
+
+#include "conf.h"
+#include "protocol.h"
+#include "xalloc.h"
+
+/* The name this program was run with. */
+char *program_name = NULL;
+
+/* If nonzero, display usage information and exit. */
+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;
+
+char *identname = NULL; /* program name for syslog */
+char *pidfilename = NULL; /* pid file location */
+char *controlfilename = NULL; /* pid file location */
+char *confbase = NULL;
+char *netname = NULL;
+
+static int status;
+
+static struct option const long_options[] = {
+ {"config", required_argument, NULL, 'c'},
+ {"net", required_argument, NULL, 'n'},
+ {"help", no_argument, NULL, 1},
+ {"version", no_argument, NULL, 2},
+ {"pidfile", required_argument, NULL, 5},
+ {NULL, 0, NULL, 0}
+};
+
+static void usage(bool status) {
+ if(status)
+ fprintf(stderr, _("Try `%s --help\' for more information.\n"),
+ program_name);
+ else {
+ printf(_("Usage: %s [options] command\n\n"), program_name);
+ printf(_("Valid options are:\n"
+ " -c, --config=DIR Read configuration options from DIR.\n"
+ " -n, --net=NETNAME Connect to net NETNAME.\n"
+ " --pidfile=FILENAME Write PID to FILENAME.\n"
+ " --help Display this help and exit.\n"
+ " --version Output version information and exit.\n"
+ "Valid commands are:\n"
+ " start Start tincd.\n"
+ " stop Stop tincd.\n"
+ " restart Restart tincd.\n"
+ " reload Reload configuration of running tincd.\n"
+ " genkey [bits] Generate a new public/private keypair.\n"
+ " dump Dump a list of one of the following things:\n"
+ " nodes - all known nodes in the VPN\n"
+ " edges - all known connections in the VPN\n"
+ " subnets - all known subnets in the VPN\n"
+ " connections - all meta connections with ourself\n"
+ " graph - graph of the VPN in dotty format\n"
+ "\n"));
+ printf(_("Report bugs to tinc@tinc-vpn.org.\n"));
+ }
+}
+
+static bool parse_options(int argc, char **argv) {
+ int r;
+ int option_index = 0;
+
+ while((r = getopt_long(argc, argv, "c:n:", long_options, &option_index)) != EOF) {
+ switch (r) {
+ case 0: /* long option */
+ break;
+
+ case 'c': /* config file */
+ confbase = xstrdup(optarg);
+ break;
+
+ case 'n': /* net name given */
+ netname = xstrdup(optarg);
+ break;
+
+ case 1: /* show help */
+ show_help = true;
+ break;
+
+ case 2: /* show version */
+ show_version = true;
+ break;
+
+ case 5: /* write PID to a file */
+ pidfilename = xstrdup(optarg);
+ break;
+
+ case '?':
+ usage(true);
+ return false;
+
+ default:
+ break;
+ }
+ }
+
+ 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;
+
+ 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"));
+
+ asprintf(&filename, "%s/rsa_key.priv", confbase);
+ f = ask_and_open(filename, _("private RSA key"), "a");
+
+ if(!f)
+ 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_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
+ fclose(f);
+ free(filename);
+
+ 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 false;
+
+ 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);
+ fclose(f);
+ free(filename);
+
+ return true;
+}
+
+/*
+ Set all files and paths according to netname
+*/
+static void make_names(void) {
+#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);
+
+ asprintf(&controlfilename, LOCALSTATEDIR "/run/%s.control", identname);
+
+ if(netname) {
+ if(!confbase)
+ asprintf(&confbase, CONFDIR "/tinc/%s", netname);
+ else
+ fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
+ } else {
+ if(!confbase)
+ asprintf(&confbase, CONFDIR "/tinc");
+ }
+}
+
+int main(int argc, char **argv) {
+ int fd;
+ struct sockaddr_un addr;
+ program_name = argv[0];
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+
+ 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) 1998-2007 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"
+ "see the file COPYING for details.\n"));
+
+ return 0;
+ }
+
+ if(show_help) {
+ usage(false);
+ return 0;
+ }
+
+ if(strlen(controlfilename) >= sizeof addr.sun_path) {
+ fprintf(stderr, _("Control socket filename too long!\n"));
+ return 1;
+ }
+
+ fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if(fd < 0) {
+ fprintf(stderr, _("Cannot create UNIX socket: %s\n"), strerror(errno));
+ return 1;
+ }
+
+ memset(&addr, 0, sizeof addr);
+ addr.sun_family = AF_UNIX;
+ strncpy(addr.sun_path, controlfilename, sizeof addr.sun_path - 1);
+
+ if(connect(fd, (struct sockaddr *)&addr, sizeof addr) < 0) {
+ fprintf(stderr, _("Cannot connect to %s: %s\n"), controlfilename, strerror(errno));
+ return 1;
+ }
+
+ printf("Connected to %s.\n", controlfilename);
+
+ close(fd);
+
+ return 0;
+}
projects / oweals / tinc.git / commitdiff