pcap_indextoname.c

/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
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 *   without modification, are permitted (subject to the limitations
 *   in the disclaimer below) provided that the following conditions
 *   are met:
 *
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 *     notice, this list of conditions and the following disclaimer.
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 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials
 *     provided with the distribution.
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 *   * Neither the name of Qualcomm Atheros nor the names of
 *     its contributors may be used to endorse or promote products
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 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   char * pcap_indextoname (unsigned ifindex, char * ifname);
 *
 *   ether.h
 *
 *   a WinPcap version of POSIX if_indextoname function; return error
 *   in non-pcap environments; set errno to ENXIO on error on MacOSX;
 *
 *   see The Open Group Base Specifications Issue 6 IEEE Std 1003.1,
 *   2004 Edition for a description of this function;
 *
 *
 *--------------------------------------------------------------------*/

#ifndef PCAP_INDEXTONAME_SOURCE
#define PCAP_INDEXTONAME_SOURCE

#include <pcap.h>
#include <string.h>
#include <errno.h>

#include "../ether/ether.h"

char * pcap_indextoname (unsigned ifindex, char * ifname)

{

#if defined (WINPCAP) || defined (LIBPCAP)

	char buffer [PCAP_ERRBUF_SIZE];
	pcap_if_t * devices = (pcap_if_t *)(0);
	pcap_if_t * device;
	if ((index--) && (pcap_findalldevs (&devices, buffer) != -1))
	{
		for (device = devices; device; device = device->next)
		{
			if (!index--)
			{
				memcpy (ifname, device->name, strlen (device->name));
				pcap_freealldevs (devices);
				return (ifname);
			}
		}
		pcap_freealldevs (devices);
	}

#endif
#if defined (__APPLE__)

	errno = ENXIO;

#endif

	return ((char *)(0));
}


#endif