blob: 0e3fe5928ca18dae48f31c4ff020af826353fdae [file] [log] [blame] [raw]
/*
* (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;
}