94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
/* $NetBSD: sirix.c,v 1.5 2010/04/17 21:00:09 darrenr Exp $ */
|
|
|
|
/*
|
|
* (C)opyright 1992-1998 Darren Reed.
|
|
* (C)opyright 1997 Marc Boucher.
|
|
*
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
*
|
|
*/
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/raw.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 "ipsend.h"
|
|
#include <netinet/udp_var.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)
|
|
{
|
|
int fd;
|
|
struct sockaddr_raw sr;
|
|
|
|
if ((fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)) < 0)
|
|
{
|
|
perror("socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)");
|
|
return -1;
|
|
}
|
|
|
|
memset(&sr, 0, sizeof(sr));
|
|
sr.sr_family = AF_RAW;
|
|
sr.sr_port = ETHERTYPE_IP;
|
|
strncpy(sr.sr_ifname, device, sizeof(sr.sr_ifname));
|
|
if (bind(fd, &sr, sizeof(sr)) < 0)
|
|
{
|
|
perror("bind AF_RAW");
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
|
|
/*
|
|
* output an IP packet
|
|
*/
|
|
int sendip(int fd, char *pkt, int len)
|
|
{
|
|
struct sockaddr_raw sr;
|
|
int srlen = sizeof(sr);
|
|
struct ifreq ifr;
|
|
struct ether_header *eh = (struct ether_header *)pkt;
|
|
|
|
if (getsockname(fd, &sr, &srlen) == -1)
|
|
{
|
|
perror("getsockname");
|
|
return -1;
|
|
}
|
|
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
strncpy(ifr.ifr_name, sr.sr_ifname, sizeof ifr.ifr_name);
|
|
|
|
if (ioctl(fd, SIOCGIFADDR, &ifr) == -1)
|
|
{
|
|
perror("ioctl SIOCGIFADDR");
|
|
return -1;
|
|
}
|
|
|
|
memcpy(eh->ether_shost, ifr.ifr_addr.sa_data, sizeof(eh->ether_shost));
|
|
|
|
if (write(fd, pkt, len) == -1)
|
|
{
|
|
perror("send");
|
|
return -1;
|
|
}
|
|
|
|
return len;
|
|
}
|