1 /* $NetBSD: sockraw.c,v 1.1.1.1 2012/03/23 21:20:06 christos Exp $ */
2
3 /*
4 * (C)opyright 2000 Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * WARNING: Attempting to use this .c file on HP-UX 11.00 will cause the
9 * system to crash.
10 */
11 #include <sys/param.h>
12 #include <sys/types.h>
13 #include <sys/socket.h>
14 #include <sys/ioctl.h>
15
16 #include <net/if.h>
17 #include <netinet/in.h>
18 #include <netinet/in_systm.h>
19 #include <netinet/ip.h>
20 #include <netinet/if_ether.h>
21 #include <netinet/ip_var.h>
22 #include <netinet/udp.h>
23 #include <netinet/udp_var.h>
24 #include <netinet/tcp.h>
25 #include <stdio.h>
26 #include <string.h>
27 #include <unistd.h>
28 #include <stdlib.h>
29 #include <errno.h>
30 #include "ipsend.h"
31
32 #if !defined(lint) && defined(LIBC_SCCS)
33 static char sirix[] = "@(#)sirix.c 1.0 10/9/97 (C)1997 Marc Boucher";
34 #endif
35
36
initdevice(char * device,int tout)37 int initdevice(char *device, int tout)
38 {
39 struct sockaddr s;
40 struct ifreq ifr;
41 int fd;
42
43 memset(&ifr, 0, sizeof(ifr));
44 strncpy(ifr.ifr_name, device, sizeof ifr.ifr_name);
45
46 if ((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
47 {
48 perror("socket(AF_INET, SOCK_RAW, IPPROTO_RAW)");
49 return -1;
50 }
51
52 if (ioctl(fd, SIOCGIFADDR, &ifr) == -1)
53 {
54 perror("ioctl SIOCGIFADDR");
55 return -1;
56 }
57
58 bzero((char *)&s, sizeof(s));
59 s.sa_family = AF_INET;
60 bcopy(&ifr.ifr_addr, s.sa_data, 4);
61 if (bind(fd, &s, sizeof(s)) == -1)
62 perror("bind");
63 return fd;
64 }
65
66
67 /*
68 * output an IP packet
69 */
sendip(int fd,char * pkt,int len)70 int sendip(int fd, char *pkt, int len)
71 {
72 struct ether_header *eh;
73 struct sockaddr_in sin;
74
75 eh = (struct ether_header *)pkt;
76 bzero((char *)&sin, sizeof(sin));
77 sin.sin_family = AF_INET;
78 pkt += 14;
79 len -= 14;
80 bcopy(pkt + 12, (char *)&sin.sin_addr, 4);
81
82 if (sendto(fd, pkt, len, 0, &sin, sizeof(sin)) == -1)
83 {
84 perror("send");
85 return -1;
86 }
87
88 return len;
89 }
90