87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
/* $NetBSD: ultrix.c,v 1.2 2002/01/24 08:21:41 martti Exp $ */
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/*
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* (C)opyright 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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#include <stdio.h>
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#include <strings.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <sys/param.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 <net/if.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <netdnet/dli_var.h>
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static struct dli_devid dli_devid;
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int initdevice(device, sport, tout)
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char *device;
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int sport, tout;
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{
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u_char *s;
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int fd;
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fd = socket(AF_DLI, SOCK_DGRAM, 0);
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if (fd == -1)
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perror("socket(AF_DLI,SOCK_DGRAM)");
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else {
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strncpy(dli_devid.dli_devname, device, DLI_DEVSIZE);
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dli_devid.dli_devname[DLI_DEVSIZE] ='\0';
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for (s = dli_devid.dli_devname; *s && isalpha((char)*s); s++)
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;
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if (*s && isdigit((char)*s)) {
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dli_devid.dli_devnumber = atoi(s);
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}
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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/bpf
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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_dl dl;
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struct sockaddr_edl *edl = &dl.choose_addr.dli_eaddr;
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dl.dli_family = AF_DLI;
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dl.dli_substructype = DLI_ETHERNET;
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bcopy((char *)&dli_devid, (char *)&dl.dli_device, sizeof(dli_devid));
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bcopy(pkt, edl->dli_target, DLI_EADDRSIZE);
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bcopy(pkt, edl->dli_dest, DLI_EADDRSIZE);
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bcopy(pkt + DLI_EADDRSIZE * 2, (char *)&edl->dli_protype, 2);
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edl->dli_ioctlflg = 0;
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if (sendto(fd, pkt, len, 0, (struct sockaddr *)&dl, sizeof(dl)) == -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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char *strdup(str)
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char *str;
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{
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char *s;
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if ((s = (char *)malloc(strlen(str) + 1)))
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return strcpy(s, str);
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return NULL;
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}
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