1145519Sdarrenr/*	$FreeBSD: releng/10.3/contrib/ipfilter/ipsend/sirix.c 255332 2013-09-06 23:11:19Z cy $	*/
2145510Sdarrenr
331183Speter/*
453024Sguido * (C)opyright 1992-1998 Darren Reed.
531183Speter * (C)opyright 1997 Marc Boucher.
631183Speter *
780486Sdarrenr * See the IPFILTER.LICENCE file for details on licencing.
8145510Sdarrenr *
931183Speter */
1031183Speter#include <stdio.h>
1131183Speter#include <sys/types.h>
1231183Speter#include <string.h>
1331183Speter#include <unistd.h>
1431183Speter#include <stdlib.h>
1531183Speter#include <errno.h>
1631183Speter#include <sys/socket.h>
1731183Speter#include <sys/ioctl.h>
1831183Speter
1931183Speter#include <net/if.h>
2031183Speter#include <net/raw.h>
2131183Speter#include <netinet/in.h>
2231183Speter#include <netinet/in_systm.h>
2331183Speter#include <netinet/ip.h>
2431183Speter#include <netinet/if_ether.h>
2531183Speter#include <netinet/ip_var.h>
26145510Sdarrenr#include "ipsend.h"
2731183Speter#include <netinet/udp_var.h>
2831183Speter
2931183Speter#if !defined(lint) && defined(LIBC_SCCS)
3031183Speterstatic	char	sirix[] = "@(#)sirix.c	1.0 10/9/97 (C)1997 Marc Boucher";
3131183Speter#endif
3231183Speter
3331183Speter
34145510Sdarrenrint	initdevice(char *device, int tout)
3531183Speter{
3631183Speter	int fd;
3731183Speter	struct sockaddr_raw sr;
3831183Speter
3931183Speter	if ((fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)) < 0)
4031183Speter	    {
4131183Speter		perror("socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)");
4231183Speter		return -1;
4331183Speter	    }
4431183Speter
4531183Speter	memset(&sr, 0, sizeof(sr));
4631183Speter	sr.sr_family = AF_RAW;
4731183Speter	sr.sr_port = ETHERTYPE_IP;
4831183Speter	strncpy(sr.sr_ifname, device, sizeof(sr.sr_ifname));
4931183Speter	if (bind(fd, &sr, sizeof(sr)) < 0)
5031183Speter	    {
5131183Speter		perror("bind AF_RAW");
5231183Speter		close(fd);
5331183Speter		return -1;
5431183Speter	    }
5531183Speter	return fd;
5631183Speter}
5731183Speter
5831183Speter
5931183Speter/*
6031183Speter * output an IP packet
6131183Speter */
6231183Speterint	sendip(int fd, char *pkt, int len)
63255332Scy{
6431183Speter	struct sockaddr_raw sr;
6531183Speter	int srlen = sizeof(sr);
6631183Speter	struct ifreq ifr;
6731183Speter	struct ether_header *eh = (struct ether_header *)pkt;
6831183Speter
6931183Speter	if (getsockname(fd, &sr, &srlen) == -1)
7031183Speter	    {
7131183Speter		perror("getsockname");
7231183Speter		return -1;
7331183Speter	    }
7431183Speter
7531183Speter	memset(&ifr, 0, sizeof(ifr));
7631183Speter	strncpy(ifr.ifr_name, sr.sr_ifname, sizeof ifr.ifr_name);
7731183Speter
7831183Speter	if (ioctl(fd, SIOCGIFADDR, &ifr) == -1)
7931183Speter	    {
8031183Speter		perror("ioctl SIOCGIFADDR");
8131183Speter		return -1;
8231183Speter	    }
8331183Speter
8431183Speter	memcpy(eh->ether_shost, ifr.ifr_addr.sa_data, sizeof(eh->ether_shost));
8531183Speter
8631183Speter	if (write(fd, pkt, len) == -1)
8731183Speter	    {
8831183Speter		perror("send");
8931183Speter		return -1;
9031183Speter	    }
9131183Speter
9231183Speter	return len;
9331183Speter}
94