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			pcapdevs.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.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   pcapdevs.c - pcap device enumerator;
 *
 *
 *   Contributor(s):
 *      Nathaniel Houghton &lt;nhoughto@qca.qualcomm.com&gt;
 *	Charles Maier &lt;cmaier@qca.qualcomm.com&gt;
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *   system header files;
 *--------------------------------------------------------------------*/

#include &lt;unistd.h&gt;
#include &lt;errno.h&gt;
#include &lt;string.h&gt;
#include &lt;pcap.h&gt;

#if defined (__linux__)
#elif defined (__APPLE__)
#elif defined (__OpenBSD__)
#	include &lt;sys/types.h&gt;
#	include &lt;sys/socket.h&gt;
#	include &lt;net/if.h&gt;
#	include &lt;netinet/in.h&gt;
#	include &lt;netinet/if_ether.h&gt;
#elif defined (WINPCAP) || defined (LIBPCAP)
#else
#error &quot;Unknown environment&quot;
#endif

/*====================================================================*
 *   custom header files;
 *--------------------------------------------------------------------*/

#include &quot;../tools/getoptv.h&quot;
#include &quot;../tools/putoptv.h&quot;
#include &quot;../tools/version.h&quot;
#include &quot;../tools/memory.h&quot;
#include &quot;../tools/flags.h&quot;
#include &quot;../tools/types.h&quot;
#include &quot;../tools/error.h&quot;
#include &quot;../ether/ether.h&quot;

/*====================================================================*
 *   custom source files;
 *--------------------------------------------------------------------*/

#ifndef MAKEFILE
#include &quot;../tools/getoptv.c&quot;
#include &quot;../tools/putoptv.c&quot;
#include &quot;../tools/version.c&quot;
#include &quot;../tools/error.c&quot;
#include &quot;../tools/hexdecode.c&quot;
#endif

/*====================================================================*
 *   program constants;
 *--------------------------------------------------------------------*/

#define PCAP_VERBOSE (1 &lt;&lt; 0)
#define PCAP_SILENCE (1 &lt;&lt; 1)
#define PCAP_DEVICES (1 &lt;&lt; 2)
#define PCAP_NICS (1 &lt;&lt; 3)
#define PCAP_MACS (1 &lt;&lt; 4)

/*====================================================================*
 *
 *   void pcap_enum (flag_t flags);
 *
 *   pcap_enum available pcap devices on stdout;
 *
 *
 *   Contributor(s):
 *      Nathaniel Houghton &lt;nhoughto@qca.qualcomm.com&gt;
 *
 *--------------------------------------------------------------------*/

void pcap_enum (flag_t flags)

{
	char report [PCAP_ERRBUF_SIZE];
	char string [ETHER_ADDR_LEN * 3];
	byte number [ETHER_ADDR_LEN];
	pcap_if_t * device;
	pcap_if_t * devices = (pcap_if_t *)(0);
	unsigned index;
	if (pcap_findalldevs (&amp;devices, report) == -1)
	{
		error (1, 0, &quot;Can't enumerate interfaces&quot;);
	}
	if (!devices)
	{
		error (1, 0, &quot;No interfaces available&quot;);
	}
	if (_anyset (flags, PCAP_DEVICES))
	{
		for (device = devices, index = 1; device; device = device-&gt;next, index++)
		{
			gethwaddr (number, device-&gt;name);
			hexdecode (number, sizeof (number), string, sizeof (string));
			printf (&quot;%2d %s %s&quot;, index, string, device-&gt;name);
			if (device-&gt;description)
			{
				printf (&quot;\t(%s)&quot;, device-&gt;description);
			}
			printf (&quot;\n&quot;);
		}
	}
	if (_anyset (flags, PCAP_NICS))
	{
		for (device = devices, index = 1; device; device = device-&gt;next, index++)
		{

#if defined (WIN32)

			printf (&quot;ETH%d=%d&quot;, index, index);

#else

			printf (&quot;ETH%d=%s&quot;, index, device-&gt;name);

#endif

			if (device-&gt;description)
			{
				printf (&quot;\t# %s&quot;, device-&gt;description);
			}
			printf (&quot;\n&quot;);
		}
		printf (&quot;\n&quot;);
	}
	if (_anyset (flags, PCAP_MACS))
	{
		for (device = devices, index = 1; device; device = device-&gt;next, index++)
		{
			gethwaddr (number, device-&gt;name);
			hexdecode (number, sizeof (number), string, sizeof (string));
			printf (&quot;NIC%d=%s&quot;, index, string);
			if (device-&gt;description)
			{
				printf (&quot;\t# %s&quot;, device-&gt;description);
			}
			printf (&quot;\n&quot;);
		}
		printf (&quot;\n&quot;);
	}
	pcap_freealldevs (devices);
	return;
}

/*====================================================================*
 *
 *   int main (int argc, char const * argv [])
 *
 *
 *--------------------------------------------------------------------*/

int main (int argc, char const * argv [])

{
	static char const * optv [] =
	{
		&quot;hqv&quot;,
		&quot;&quot;,
		&quot;enumerate available pcap devices on stdout&quot;,
		&quot;h\tprint host definitions for scripting&quot;,
		&quot;q\tquiet&quot;,
		&quot;v\tverbose messages&quot;,
		(char const *) (0)
	};
	flag_t flags = PCAP_DEVICES;
	signed c;
	optind = 1;
	while ((c = getoptv (argc, argv, optv)) != -1)
	{
		switch ((char) (c))
		{
		case 'h':
			_clrbits (flags, (PCAP_DEVICES));
			_setbits (flags, (PCAP_NICS | PCAP_MACS));
			break;
		case 'q':
			_setbits (flags, PCAP_SILENCE);
			break;
		case 'v':
			_setbits (flags, PCAP_VERBOSE);
			break;
		default:
			break;
		}
	}
	argc -= optind;
	argv += optind;
	if (argc)
	{
		error (1, ECANCELED, ERROR_TOOMANY);
	}
	pcap_enum (flags);
	return (0);
}


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