diff options
Diffstat (limited to 'src/openvpn/proto.c')
-rw-r--r-- | src/openvpn/proto.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/src/openvpn/proto.c b/src/openvpn/proto.c deleted file mode 100644 index df5b77b..0000000 --- a/src/openvpn/proto.c +++ /dev/null @@ -1,74 +0,0 @@ -/* - * 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) 2002-2005 OpenVPN Solutions LLC <info@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 WIN32 -#include "config-win32.h" -#else -#include "config.h" -#endif - -#include "syshead.h" - -#include "proto.h" - -#include "memdbg.h" - -/* - * If raw tunnel packet is IPv4, return true and increment - * buffer offset to start of IP header. - */ -bool -is_ipv4 (int tunnel_type, struct buffer *buf) -{ - int offset; - const struct openvpn_iphdr *ih; - - verify_align_4 (buf); - if (tunnel_type == DEV_TYPE_TUN) - { - if (BLEN (buf) < (int) sizeof (struct openvpn_iphdr)) - return false; - offset = 0; - } - else if (tunnel_type == DEV_TYPE_TAP) - { - const struct openvpn_ethhdr *eh; - if (BLEN (buf) < (int)(sizeof (struct openvpn_ethhdr) - + sizeof (struct openvpn_iphdr))) - return false; - eh = (const struct openvpn_ethhdr *) BPTR (buf); - if (ntohs (eh->proto) != OPENVPN_ETH_P_IPV4) - return false; - offset = sizeof (struct openvpn_ethhdr); - } - else - return false; - - ih = (const struct openvpn_iphdr *) (BPTR (buf) + offset); - - if (OPENVPN_IPH_GET_VER (ih->version_len) == 4) - return buf_advance (buf, offset); - else - return false; -} |