2005-04-25 18:20:15 +00:00
|
|
|
/* $FreeBSD$ */
|
2005-04-25 17:31:50 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* (C)opyright 2000 Darren Reed.
|
|
|
|
*
|
|
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
|
|
*
|
|
|
|
* WARNING: Attempting to use this .c file on HP-UX 11.00 will cause the
|
|
|
|
* system to crash.
|
|
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/socket.h>
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
|
|
|
|
#include <net/if.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include <netinet/in_systm.h>
|
|
|
|
#include <netinet/ip.h>
|
|
|
|
#include <netinet/if_ether.h>
|
|
|
|
#include <netinet/ip_var.h>
|
|
|
|
#include <netinet/udp.h>
|
|
|
|
#include <netinet/udp_var.h>
|
|
|
|
#include <netinet/tcp.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include "ipsend.h"
|
|
|
|
|
|
|
|
#if !defined(lint) && defined(LIBC_SCCS)
|
|
|
|
static char sirix[] = "@(#)sirix.c 1.0 10/9/97 (C)1997 Marc Boucher";
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
int initdevice(char *device, int tout)
|
|
|
|
{
|
|
|
|
struct sockaddr s;
|
|
|
|
struct ifreq ifr;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
|
|
strncpy(ifr.ifr_name, device, sizeof ifr.ifr_name);
|
|
|
|
|
|
|
|
if ((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
|
|
|
|
{
|
|
|
|
perror("socket(AF_INET, SOCK_RAW, IPPROTO_RAW)");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ioctl(fd, SIOCGIFADDR, &ifr) == -1)
|
|
|
|
{
|
|
|
|
perror("ioctl SIOCGIFADDR");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
bzero((char *)&s, sizeof(s));
|
|
|
|
s.sa_family = AF_INET;
|
|
|
|
bcopy(&ifr.ifr_addr, s.sa_data, 4);
|
|
|
|
if (bind(fd, &s, sizeof(s)) == -1)
|
|
|
|
perror("bind");
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* output an IP packet
|
|
|
|
*/
|
|
|
|
int sendip(int fd, char *pkt, int len)
|
|
|
|
{
|
|
|
|
struct ether_header *eh;
|
|
|
|
struct sockaddr_in sin;
|
|
|
|
|
|
|
|
eh = (struct ether_header *)pkt;
|
|
|
|
bzero((char *)&sin, sizeof(sin));
|
|
|
|
sin.sin_family = AF_INET;
|
|
|
|
pkt += 14;
|
|
|
|
len -= 14;
|
|
|
|
bcopy(pkt + 12, (char *)&sin.sin_addr, 4);
|
|
|
|
|
|
|
|
if (sendto(fd, pkt, len, 0, &sin, sizeof(sin)) == -1)
|
|
|
|
{
|
|
|
|
perror("send");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|