diff options
Diffstat (limited to 'bitmask_android/openvpn/src/openvpn/openvpn.c')
| -rw-r--r-- | bitmask_android/openvpn/src/openvpn/openvpn.c | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/bitmask_android/openvpn/src/openvpn/openvpn.c b/bitmask_android/openvpn/src/openvpn/openvpn.c new file mode 100644 index 00000000..a177d9e8 --- /dev/null +++ b/bitmask_android/openvpn/src/openvpn/openvpn.c @@ -0,0 +1,334 @@ +/* + * OpenVPN -- An application to securely tunnel IP networks + * over a single TCP/UDP port, with support for SSL/TLS-based + * session authentication and key exchange, + * packet encryption, packet authentication, and + * packet compression. + * + * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * 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 (see the file COPYING included with this + * distribution); if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#elif defined(_MSC_VER) +#include "config-msvc.h" +#endif + +#include "syshead.h" + +#include "init.h" +#include "forward.h" +#include "multi.h" +#include "win32.h" + +#include "memdbg.h" + +#include "forward-inline.h" + +#define P2P_CHECK_SIG() EVENT_LOOP_CHECK_SIGNAL (c, process_signal_p2p, c); + +#ifdef GOOGLE_BREAKPAD +#include "breakpad.h" +#endif + +static bool +process_signal_p2p (struct context *c) +{ + remap_signal (c); + return process_signal (c); +} + + + +/**************************************************************************/ +/** + * Main event loop for OpenVPN in client mode, where only one VPN tunnel + * is active. + * @ingroup eventloop + * + * @param c - The context structure of the single active VPN tunnel. + */ +static void +tunnel_point_to_point (struct context *c) +{ + context_clear_2 (c); + + /* set point-to-point mode */ + c->mode = CM_P2P; + + /* initialize tunnel instance */ + init_instance_handle_signals (c, c->es, CC_HARD_USR1_TO_HUP); + if (IS_SIG (c)) + return; + + /* main event loop */ + while (true) + { + perf_push (PERF_EVENT_LOOP); + + /* process timers, TLS, etc. */ + pre_select (c); + P2P_CHECK_SIG(); + + /* set up and do the I/O wait */ + io_wait (c, p2p_iow_flags (c)); + P2P_CHECK_SIG(); + + /* timeout? */ + if (c->c2.event_set_status == ES_TIMEOUT) + { + perf_pop (); + continue; + } + + /* process the I/O which triggered select */ + process_io (c); + P2P_CHECK_SIG(); + + perf_pop (); + } + + uninit_management_callback (); + + /* tear down tunnel instance (unless --persist-tun) */ + close_instance (c); +} + +#undef PROCESS_SIGNAL_P2P + + +/**************************************************************************/ +/** + * OpenVPN's main init-run-cleanup loop. + * @ingroup eventloop + * + * This function contains the two outer OpenVPN loops. Its structure is + * as follows: + * - Once-per-process initialization. + * - Outer loop, run at startup and then once per \c SIGHUP: + * - Level 1 initialization + * - Inner loop, run at startup and then once per \c SIGUSR1: + * - Call event loop function depending on client or server mode: + * - \c tunnel_point_to_point() + * - \c tunnel_server() + * - Level 1 cleanup + * - Once-per-process cleanup. + * + * @param argc - Commandline argument count. + * @param argv - Commandline argument values. + */ +static +int +openvpn_main (int argc, char *argv[]) +{ + struct context c; + +#if PEDANTIC + fprintf (stderr, "Sorry, I was built with --enable-pedantic and I am incapable of doing any real work!\n"); + return 1; +#endif + +#ifdef WIN32 + SetConsoleOutputCP (CP_UTF8); +#endif + + CLEAR (c); + + /* signify first time for components which can + only be initialized once per program instantiation. */ + c.first_time = true; + + /* initialize program-wide statics */ + if (init_static ()) + { + /* + * This loop is initially executed on startup and then + * once per SIGHUP. + */ + do + { + /* enter pre-initialization mode with regard to signal handling */ + pre_init_signal_catch (); + + /* zero context struct but leave first_time member alone */ + context_clear_all_except_first_time (&c); + + /* static signal info object */ + CLEAR (siginfo_static); + c.sig = &siginfo_static; + + /* initialize garbage collector scoped to context object */ + gc_init (&c.gc); + + /* initialize environmental variable store */ + c.es = env_set_create (&c.gc); +#ifdef WIN32 + set_win_sys_path_via_env (c.es); +#endif + +#ifdef ENABLE_MANAGEMENT + /* initialize management subsystem */ + init_management (&c); +#endif + + /* initialize options to default state */ + init_options (&c.options, true); + + /* parse command line options, and read configuration file */ + parse_argv (&c.options, argc, argv, M_USAGE, OPT_P_DEFAULT, NULL, c.es); + +#ifdef ENABLE_PLUGIN + /* plugins may contribute options configuration */ + init_verb_mute (&c, IVM_LEVEL_1); + init_plugins (&c); + open_plugins (&c, true, OPENVPN_PLUGIN_INIT_PRE_CONFIG_PARSE); +#endif + + /* init verbosity and mute levels */ + init_verb_mute (&c, IVM_LEVEL_1); + + /* set dev options */ + init_options_dev (&c.options); + + /* openssl print info? */ + if (print_openssl_info (&c.options)) + break; + + /* --genkey mode? */ + if (do_genkey (&c.options)) + break; + + /* tun/tap persist command? */ + if (do_persist_tuntap (&c.options)) + break; + + /* sanity check on options */ + options_postprocess (&c.options); + + /* show all option settings */ + show_settings (&c.options); + + /* print version number */ + msg (M_INFO, "%s", title_string); + + /* misc stuff */ + pre_setup (&c.options); + + /* test crypto? */ + if (do_test_crypto (&c.options)) + break; + +#ifdef ENABLE_MANAGEMENT + /* open management subsystem */ + if (!open_management (&c)) + break; +#endif + + /* set certain options as environmental variables */ + setenv_settings (c.es, &c.options); + + /* finish context init */ + context_init_1 (&c); + + do + { + /* run tunnel depending on mode */ + switch (c.options.mode) + { + case MODE_POINT_TO_POINT: + tunnel_point_to_point (&c); + break; +#if P2MP_SERVER + case MODE_SERVER: + tunnel_server (&c); + break; +#endif + default: + ASSERT (0); + } + + /* indicates first iteration -- has program-wide scope */ + c.first_time = false; + + /* any signals received? */ + if (IS_SIG (&c)) + print_signal (c.sig, NULL, M_INFO); + + /* pass restart status to management subsystem */ + signal_restart_status (c.sig); + } + while (c.sig->signal_received == SIGUSR1); + + uninit_options (&c.options); + gc_reset (&c.gc); + } + while (c.sig->signal_received == SIGHUP); + } + + context_gc_free (&c); + + env_set_destroy (c.es); + +#ifdef ENABLE_MANAGEMENT + /* close management interface */ + close_management (); +#endif + + /* uninitialize program-wide statics */ + uninit_static (); + + openvpn_exit (OPENVPN_EXIT_STATUS_GOOD); /* exit point */ + return 0; /* NOTREACHED */ +} + +#ifdef WIN32 +int +wmain (int argc, wchar_t *wargv[]) { + char **argv; + int ret; + int i; + + if ((argv = calloc(argc+1, sizeof(char*))) == NULL) + return 1; + + for (i = 0; i < argc; i++) + { + int n = WideCharToMultiByte (CP_UTF8, 0, wargv[i], -1, NULL, 0, NULL, NULL); + argv[i] = malloc (n); + WideCharToMultiByte (CP_UTF8, 0, wargv[i], -1, argv[i], n, NULL, NULL); + } + + ret = openvpn_main(argc, argv); + + for (i=0; i < argc; i++ ) + { + free (argv[i]); + } + free(argv); + + return ret; +} +#else +int +main (int argc, char *argv[]) { +#ifdef GOOGLE_BREAKPAD + breakpad_setup(); +#endif + + return openvpn_main(argc, argv); +} +#endif |