61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
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/*
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* $smu-mark$
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* $name: if_promisc.c$
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* $author: Salvatore Sanfilippo <antirez@invece.org>$
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* $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$
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* $license: This software is under GPL version 2 of license$
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* $date: Fri Nov 5 11:55:48 MET 1999$
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* $rev: 2$
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <string.h>
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#include <stdio.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include "hping2.h"
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#include "globals.h"
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int if_promisc_on(int s)
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{
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struct ifreq ifr;
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strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
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if ( ioctl(s, SIOCGIFFLAGS, &ifr) == -1) {
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perror("[open_sockpacket] ioctl(SIOCGIFFLAGS)");
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return -1;
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}
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if (!(ifr.ifr_flags & IFF_PROMISC)) {
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ifr.ifr_flags |= IFF_PROMISC;
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if ( ioctl(s, SIOCSIFFLAGS, &ifr) == -1) {
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perror("[open_sockpacket] ioctl(SIOCSIFFLAGS)");
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return -1;
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}
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}
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return 0;
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}
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int if_promisc_off(int s)
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{
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struct ifreq ifr;
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strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
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if ( ioctl(s, SIOCGIFFLAGS, &ifr) == -1) {
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perror("[open_sockpacket] ioctl(SIOCGIFFLAGS)");
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return -1;
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}
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if (ifr.ifr_flags & IFF_PROMISC) {
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ifr.ifr_flags ^= IFF_PROMISC;
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if ( ioctl(s, SIOCSIFFLAGS, &ifr) == -1) {
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perror("[open_sockpacket] ioctl(SIOCSIFFLAGS)");
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return -1;
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}
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}
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return 0;
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}
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