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/*
* author: Darren Bounds <dbounds@intrusense.com>
* copyright: Copyright (C) 2002 by Darren Bounds
* license: This software is under GPL version 2 of license
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 4g8 official page at http://.net
*/
#include "ethernet_hdr.h"
void
ethernet_hdr(struct libnet_ethernet_hdr *ehdr)
{
u_int8_t mac1_array[6];
u_int8_t mac2_array[6];
#ifdef DEBUG
fprintf(stdout, "DEBUG: ethernet_hdr()\n");
#endif
fprintf(stdout, "Eth header: Src Address: %0X:%0X:%0X:%0X:%0X:%0X Dst Address: %0X:%0X:%0X:%0X:%0X:%0X",
ehdr->ether_shost[0],
ehdr->ether_shost[1],
ehdr->ether_shost[2],
ehdr->ether_shost[3],
ehdr->ether_shost[4],
ehdr->ether_shost[5],
ehdr->ether_dhost[0],
ehdr->ether_dhost[1],
ehdr->ether_dhost[2],
ehdr->ether_dhost[3],
ehdr->ether_dhost[4],
ehdr->ether_dhost[5]);
fprintf(stdout, "\n");
format_ethernet_addr(host_mac, mac1_array);
format_ethernet_addr(gw_mac, mac2_array);
if(mac1_array[3] == ehdr->ether_shost[3] &&
mac1_array[4] == ehdr->ether_shost[4] &&
mac1_array[5] == ehdr->ether_shost[5])
{
outbound = 0;
}
else
outbound = 1;
if(libnet_autobuild_ethernet(
(outbound == 1) ? mac1_array : mac2_array,
ETHERTYPE_IP,
pkt_d) == -1)
{
fatal_error("Unable to build ethernet header");
}
return;
}
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