/*====================================================================*
*
*   Copyright (c) 2013 Qualcomm Atheros, Inc.
*
*   All rights reserved.
*
*====================================================================*/

/*====================================================================*
 *
 *   hpav.c - Qualcomm Atheros HomePlug AV Packet Monitor;
 *   
 *   print message header and/or full message content on stdout for
 *   each HomePlugAV or Atheros Vendor Specific message received by
 *   the host;
 *   
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

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

#include <fcntl.h>
#include <stdio.h>
#include <limits.h>
#include <ctype.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#if defined (__linux__)
#include <net/if.h>
#include <net/if_arp.h>
#include <netpacket/packet.h>
#include <signal.h>
#endif

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

#include "../tools/getoptv.h"
#include "../tools/putoptv.h"
#include "../tools/memory.h"
#include "../tools/number.h"
#include "../tools/types.h"
#include "../tools/flags.h"
#include "../tools/error.h"
#include "../ether/channel.h"
#include "../plc/plc.h"
#include "../mme/mme.h"

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

#ifndef MAKEFILE
#include "../tools/getoptv.c"
#include "../tools/putoptv.c"
#include "../tools/version.c"
#include "../tools/hexdump.c"
#include "../tools/hexdecode.c"
#include "../tools/hexstring.c"
#include "../tools/hexstream.c"
#include "../tools/uintspec.c"
#include "../tools/todigit.c"
#include "../tools/error.c"
#endif

#ifndef MAKEFILE
#include "../ether/channel.c"
#include "../ether/openchannel.c"
#include "../ether/closechannel.c"
#include "../ether/sendpacket.c"
#include "../ether/readpacket.c"
#endif

#ifndef MAKEFILE
#include "../mme/MMEPeek.c"
#include "../mme/MMEShow.c"
#include "../mme/MMEName.c"
#include "../mme/MMEMode.c"
#endif

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

#define HPAV_VERBOSE (1 << 0)
#define HPAV_SILENCE (1 << 1)
#define HPAV_CONCISE (1 << 2)

#define PLCDEVICE "PLC"

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

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

{ 
	extern struct channel channel; 
	struct message message; 
	static char const * optv [] = 
	{ 
		"di:qt:v", 
		PUTOPTV_S_DIVINE, 
		"Qualcomm Atheros HomePlug AV Packet Monitor", 
		"d\tprint compact information", 

#if defined (WINPCAP) 

		"i s\thost interface is (s) [" CHANNEL_ETHDEVICE "]", 

#else

		"i n\thost interface is (n) [" LITERAL (CHANNEL_ETHNUMBER) "]", 

#endif

		"q\tsuppress normal output", 
		"t n\tread timeout is (n) milliseconds [" LITERAL (CHANNEL_TIMEOUT) "]", 
		"v\tverbose messages on stdout", 
		(char const *) (0)
	}; 
	flag_t flags = (flag_t) (0); 
	void (* function) (void const * memory, size_t extent, FILE *) = MMEPeek; 
	signed length; 
	signed c; 
	if (getenv (PLCDEVICE)) 
	{ 

#if defined (WINPCAP) 

		channel.ifindex = atoi (getenv (PLCDEVICE)); 

#else

		channel.ifname = strdup (getenv (PLCDEVICE)); 

#endif

	} 
	optind = 1; 
	while (~ (c = getoptv (argc, argv, optv))) 
	{ 
		switch (c) 
		{ 
		case 'd': 
			function = MMEShow; 
			break; 
		case 'i': 

#if defined (WIN32)

			channel.ifindex = atoi (optarg); 

#else

			channel.ifname = optarg; 

#endif

			break; 
		case 'q': 
			_setbits (flags, HPAV_SILENCE); 
			break; 
		case 't': 
			channel.timeout = (unsigned) (uintspec (optarg, 0, UINT_MAX)); 
			break; 
		case 'v': 
			_setbits (flags, HPAV_VERBOSE); 
			break; 
		default: 
			break; 
		} 
	} 
	argc -= optind; 
	argv += optind; 
	openchannel (& channel); 
	while ((length = readpacket (& channel, & message, sizeof (message))) >= 0) 
	{ 
		if (! length) 
		{ 
			continue; 
		} 
		if (_allclr (flags, HPAV_SILENCE)) 
		{ 
			function (& message, length, stdout); 
		} 
		if (_anyset (flags, HPAV_VERBOSE)) 
		{ 
			hexdump (& message, 0, length, stdout); 
		} 
	} 
	closechannel (& channel); 
	return (0); 
}