93 lines
1.8 KiB
C
93 lines
1.8 KiB
C
/* $NetBSD: slinux.c,v 1.3 2004/03/28 09:00:56 martti Exp $ */
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/*
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* (C)opyright 1992-1998 Darren Reed. (from tcplog)
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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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*/
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/timeb.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/dir.h>
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#include <linux/netdevice.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/tcp.h>
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#include "ipsend.h"
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#if !defined(lint)
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static const char sccsid[] = "@(#)slinux.c 1.2 8/25/95";
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static const char rcsid[] = "@(#)Id: slinux.c,v 2.3 2001/06/09 17:09:26 darrenr Exp";
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#endif
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#define CHUNKSIZE 8192
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#define BUFSPACE (4*CHUNKSIZE)
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/*
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* Be careful to only include those defined in the flags option for the
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* interface are included in the header size.
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*/
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static int timeout;
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static char *eth_dev = NULL;
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int initdevice(dev, spare)
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char *dev;
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int spare;
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{
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int fd;
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eth_dev = strdup(dev);
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if ((fd = socket(AF_INET, SOCK_PACKET, htons(ETHERTYPE_IP))) == -1)
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{
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perror("socket(SOCK_PACKET)");
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exit(-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 onto a fd opened for /dev/nit
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*/
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int sendip(fd, pkt, len)
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int fd, len;
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char *pkt;
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{
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struct sockaddr s;
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struct ifreq ifr;
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strncpy(ifr.ifr_name, eth_dev, sizeof(ifr.ifr_name));
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if (ioctl(fd, SIOCGIFHWADDR, &ifr) == -1)
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{
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perror("SIOCGIFHWADDR");
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return -1;
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}
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bcopy(ifr.ifr_hwaddr.sa_data, pkt + 6, 6);
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s.sa_family = ETHERTYPE_IP;
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strncpy(s.sa_data, eth_dev, sizeof(s.sa_data));
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if (sendto(fd, pkt, len, 0, &s, sizeof(s)) == -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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