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210d6c0847
Nmap's changes have been moved from the NMAP_MODIFICATIONS file to the Github repo at https://github.com/nmap/libdnet The NMAP_MODIFICATIONS file instead will document only the changes made to strip unused parts of the libdnet source prior to inclusion in Nmap.
88 lines
1.4 KiB
C
88 lines
1.4 KiB
C
/*
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* eth-pfilt.c
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*
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* XXX - requires 'cd dev && ./MAKEDEV pfilt' if not already configured...
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*
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* Copyright (c) 2001 Dug Song <dugsong@monkey.org>
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*
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* $Id$
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <net/pfilt.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "dnet.h"
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struct eth_handle {
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int fd;
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int sock;
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char device[16];
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};
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eth_t *
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eth_open(const char *device)
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{
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struct eth_handle *e;
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int fd;
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if ((e = calloc(1, sizeof(*e))) != NULL) {
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strlcpy(e->device, device, sizeof(e->device));
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if ((e->fd = pfopen(e->device, O_WRONLY)) < 0 ||
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(e->sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
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e = eth_close(e);
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}
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return (e);
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}
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int
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eth_get(eth_t *e, eth_addr_t *ea)
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{
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struct ifdevea ifd;
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strlcpy(ifd.ifr_name, e->device, sizeof(ifd.ifr_name));
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if (ioctl(e->sock, SIOCRPHYSADDR, &ifd) < 0)
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return (-1);
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memcpy(ea, ifd.current_pa, ETH_ADDR_LEN);
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return (0);
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}
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int
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eth_set(eth_t *e, const eth_addr_t *ea)
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{
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struct ifdevea ifd;
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strlcpy(ifd.ifr_name, e->device, sizeof(ifd.ifr_name));
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memcpy(ifd.current_pa, ea, ETH_ADDR_LEN);
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return (ioctl(e->sock, SIOCSPHYSADDR, &ifd));
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}
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ssize_t
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eth_send(eth_t *e, const void *buf, size_t len)
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{
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return (write(e->fd, buf, len));
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}
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eth_t *
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eth_close(eth_t *e)
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{
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if (e != NULL) {
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if (e->fd >= 0)
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close(e->fd);
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if (e->sock >= 0)
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close(e->sock);
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free(e);
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}
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return (NULL);
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}
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