94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
|
/* $NetBSD: slinux.c,v 1.1.1.1 1999/12/11 22:24:10 veego Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* (C)opyright 1992-1998 Darren Reed. (from tcplog)
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms are permitted
|
||
|
|
* provided that this notice is preserved and due credit is given
|
||
|
|
* to the original author and the contributors.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <netdb.h>
|
||
|
|
#include <ctype.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <sys/timeb.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
#include <sys/file.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <sys/dir.h>
|
||
|
|
#include <linux/netdevice.h>
|
||
|
|
#include <net/if.h>
|
||
|
|
#include <netinet/in.h>
|
||
|
|
#include <netinet/in_systm.h>
|
||
|
|
#include <netinet/ip.h>
|
||
|
|
#include <netinet/tcp.h>
|
||
|
|
#include "ipsend.h"
|
||
|
|
|
||
|
|
#if !defined(lint)
|
||
|
|
static const char sccsid[] = "@(#)slinux.c 1.2 8/25/95";
|
||
|
|
static const char rcsid[] = "@(#)Id: slinux.c,v 2.1 1999/08/04 17:31:14 darrenr Exp";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define CHUNKSIZE 8192
|
||
|
|
#define BUFSPACE (4*CHUNKSIZE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Be careful to only include those defined in the flags option for the
|
||
|
|
* interface are included in the header size.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int timeout;
|
||
|
|
static char *eth_dev = NULL;
|
||
|
|
|
||
|
|
|
||
|
|
int initdevice(dev, sport, spare)
|
||
|
|
char *dev;
|
||
|
|
int sport, spare;
|
||
|
|
{
|
||
|
|
int fd;
|
||
|
|
|
||
|
|
eth_dev = strdup(dev);
|
||
|
|
if ((fd = socket(AF_INET, SOCK_PACKET, htons(ETHERTYPE_IP))) == -1)
|
||
|
|
{
|
||
|
|
perror("socket(SOCK_PACKET)");
|
||
|
|
exit(-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
return fd;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* output an IP packet onto a fd opened for /dev/nit
|
||
|
|
*/
|
||
|
|
int sendip(fd, pkt, len)
|
||
|
|
int fd, len;
|
||
|
|
char *pkt;
|
||
|
|
{
|
||
|
|
struct sockaddr s;
|
||
|
|
struct ifreq ifr;
|
||
|
|
|
||
|
|
strncpy(ifr.ifr_name, eth_dev, sizeof(ifr.ifr_name));
|
||
|
|
if (ioctl(fd, SIOCGIFHWADDR, &ifr) == -1)
|
||
|
|
{
|
||
|
|
perror("SIOCGIFHWADDR");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
bcopy(ifr.ifr_hwaddr.sa_data, pkt + 6, 6);
|
||
|
|
s.sa_family = ETHERTYPE_IP;
|
||
|
|
strncpy(s.sa_data, eth_dev, sizeof(s.sa_data));
|
||
|
|
|
||
|
|
if (sendto(fd, pkt, len, 0, &s, sizeof(s)) == -1)
|
||
|
|
{
|
||
|
|
perror("send");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return len;
|
||
|
|
}
|