97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
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/* $NetBSD: sirix.c,v 1.1.1.1 1999/12/11 22:24:10 veego Exp $ */
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/*
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* (C)opyright 1992-1998 Darren Reed.
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* (C)opyright 1997 Marc Boucher.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and due credit is given
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* to the original author and the contributors.
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*/
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#include <stdio.h>
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#include <sys/types.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 <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <net/raw.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 "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 sport, int tout)
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{
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int fd;
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struct sockaddr_raw sr;
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if ((fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)) < 0)
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{
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perror("socket(PF_RAW, SOCK_RAW, RAWPROTO_DRAIN)");
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return -1;
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}
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memset(&sr, 0, sizeof(sr));
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sr.sr_family = AF_RAW;
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sr.sr_port = ETHERTYPE_IP;
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strncpy(sr.sr_ifname, device, sizeof(sr.sr_ifname));
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if (bind(fd, &sr, sizeof(sr)) < 0)
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{
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perror("bind AF_RAW");
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close(fd);
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return -1;
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}
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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 sockaddr_raw sr;
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int srlen = sizeof(sr);
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struct ifreq ifr;
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struct ether_header *eh = (struct ether_header *)pkt;
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if (getsockname(fd, &sr, &srlen) == -1)
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{
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perror("getsockname");
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return -1;
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}
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, sr.sr_ifname, sizeof ifr.ifr_name);
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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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memcpy(eh->ether_shost, ifr.ifr_addr.sa_data, sizeof(eh->ether_shost));
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if (write(fd, pkt, len) == -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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