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/*
Perl ARP Extension
Send the packet
BSD code
Programmed by Bastian Ballmann
Last update: 01.12.2004
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.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <net/bpf.h>
#include <net/if.h>
#include "arp.h"
int send_packet_bsd(u_char *dev, u_char *packet, u_int packetsize)
{
int bpffd, i;
char bpfdev[12];
if( (strlen(dev) == 0) ||
(packetsize == 0) )
return 0;
// Open a bpf device
for(i = 0; i < 512; i++)
{
sprintf(bpfdev,"/dev/bpf%d",i);
if((bpffd = open(bpfdev,O_WRONLY)) > 0)
{
break;
}
}
if(bpffd < 0)
{
perror("open bpf");
return 0;
}
else
{
// Lock it
flock(bpffd,LOCK_EX);
// Bind it to a device
ioctl(bpffd,BIOCSETIF,dev);
// Send the packet and unlock
write(bpffd,packet,packetsize);
flock(bpffd,LOCK_UN);
close(bpffd);
}
return 1;
}
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