summaryrefslogtreecommitdiffstats
path: root/test/ruby/test_symbol.rb
diff options
context:
space:
mode:
Diffstat (limited to 'test/ruby/test_symbol.rb')
0 files changed, 0 insertions, 0 deletions
generated by cgit (git 2.34.1) at 2026-04-07 02:10:18 +0000
='n70' href='#n70'>70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 
/*
 *  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) 2002-2008 Telethra, 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
 */

#include "syshead.h"

#include "proto.h"
#include "error.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);
    }