90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
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/* $NetBSD: sockraw.c,v 1.1.1.1 2004/03/28 08:56:15 martti Exp $ */
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/*
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* (C)opyright 2000 Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*
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* WARNING: Attempting to use this .c file on HP-UX 11.00 will cause the
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* system to crash.
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "ipsend.h"
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#if !defined(lint) && defined(LIBC_SCCS)
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static char sirix[] = "@(#)sirix.c 1.0 10/9/97 (C)1997 Marc Boucher";
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#endif
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int initdevice(char *device, int tout)
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{
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struct sockaddr s;
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struct ifreq ifr;
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int fd;
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, device, sizeof ifr.ifr_name);
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if ((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
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{
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perror("socket(AF_INET, SOCK_RAW, IPPROTO_RAW)");
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return -1;
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}
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if (ioctl(fd, SIOCGIFADDR, &ifr) == -1)
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{
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perror("ioctl SIOCGIFADDR");
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return -1;
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}
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bzero((char *)&s, sizeof(s));
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s.sa_family = AF_INET;
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bcopy(&ifr.ifr_addr, s.sa_data, 4);
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if (bind(fd, &s, sizeof(s)) == -1)
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perror("bind");
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return fd;
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}
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/*
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* output an IP packet
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*/
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int sendip(int fd, char *pkt, int len)
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{
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struct ether_header *eh;
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struct sockaddr_in sin;
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eh = (struct ether_header *)pkt;
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bzero((char *)&sin, sizeof(sin));
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sin.sin_family = AF_INET;
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pkt += 14;
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len -= 14;
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bcopy(pkt + 12, (char *)&sin.sin_addr, 4);
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if (sendto(fd, pkt, len, 0, &sin, sizeof(sin)) == -1)
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{
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perror("send");
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return -1;
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}
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return len;
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}
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