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			pcap_indextoname.c
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/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or 
 *   without modification, are permitted (subject to the limitations 
 *   in the disclaimer below) provided that the following conditions 
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 *   * Neither the name of Qualcomm Atheros nor the names of 
 *     its contributors may be used to endorse or promote products 
 *     derived from this software without specific prior written 
 *     permission.
 *
 *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE 
 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE 
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR 
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   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 &lt;pcap.h&gt;
#include &lt;string.h&gt;
#include &lt;errno.h&gt;

#include &quot;../ether/ether.h&quot;

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--) &amp;&amp; (pcap_findalldevs (&amp;devices, buffer) != -1))
	{
		for (device = devices; device; device = device-&gt;next)
		{
			if (!index--)
			{
				memcpy (ifname, device-&gt;name, strlen (device-&gt;name));
				pcap_freealldevs (devices);
				return (ifname);
			}
		}
		pcap_freealldevs (devices);
	}

#endif
#if defined (__APPLE__)

	errno = ENXIO;

#endif

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

#endif


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