From 8dd0350e1607aa30f7a043c8d5ec7a7eeb874115 Mon Sep 17 00:00:00 2001 From: Alberto Gonzalez Iniesta Date: Mon, 5 Nov 2012 16:28:09 +0100 Subject: Imported Upstream version 2.3_rc1 --- src/openvpn/session_id.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/openvpn/session_id.c (limited to 'src/openvpn/session_id.c') diff --git a/src/openvpn/session_id.c b/src/openvpn/session_id.c new file mode 100644 index 0000000..2e07b54 --- /dev/null +++ b/src/openvpn/session_id.c @@ -0,0 +1,67 @@ +/* + * OpenVPN -- An application to securely tunnel IP networks + * over a single 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. + * + * 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 + */ + +/* + * Each session is identified by a random 8-byte session identifier. + * + * For efficiency, the session id is only transmitted over the control + * channel (which only sees traffic occasionally when keys are being + * negotiated). The data channel sees a smaller version of the session-id -- + * it is called the key_id and is currently 2 bits long. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#elif defined(_MSC_VER) +#include "config-msvc.h" +#endif + +#include "syshead.h" + +#if defined(ENABLE_CRYPTO) && defined(ENABLE_SSL) + +#include "error.h" +#include "common.h" +#include "crypto.h" +#include "session_id.h" + +#include "memdbg.h" + +const struct session_id x_session_id_zero; + +void +session_id_random (struct session_id *sid) +{ + prng_bytes (sid->id, SID_SIZE); +} + +const char * +session_id_print (const struct session_id *sid, struct gc_arena *gc) +{ + return format_hex (sid->id, SID_SIZE, 0, gc); +} + +#else +static void dummy(void) {} +#endif /* ENABLE_CRYPTO && ENABLE_SSL*/ -- cgit v1.2.3