/*====================================================================*
*
*   Copyright (c) 2013 Qualcomm Atheros, Inc.
*
*   All rights reserved.
*
*====================================================================*/
/*====================================================================*
 *
 *   coqos_mod.c - Modify MCMSA stream
 *
 *   Contributor(s):
 *	Bill Wike <bill.wike@qca.qualcomm.com>
 *	Nathaniel Houghton <nhoughto@qca.qualcomm.com>
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

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

#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>

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

#include "../tools/getoptv.h"
#include "../tools/putoptv.h"
#include "../tools/memory.h"
#include "../tools/number.h"
#include "../tools/symbol.h"
#include "../tools/types.h"
#include "../tools/flags.h"
#include "../tools/files.h"
#include "../tools/error.h"
#include "../plc/plc.h"

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

#ifndef MAKEFILE
#include "../tools/getoptv.c"
#include "../tools/putoptv.c"
#include "../tools/version.c"
#include "../tools/hexdump.c"
#include "../tools/hexencode.c"
#include "../tools/bytespec.c"
#include "../tools/ipv4spec.c"
#include "../tools/ipv6spec.c"
#include "../tools/hexdecode.c"
#include "../tools/todigit.c"
#include "../tools/typename.c"
#include "../tools/error.c"
#include "../tools/synonym.c"
#include "../tools/lookup.c"
#include "../tools/assist.c"
#include "../tools/codelist.c"
#endif

#ifndef MAKEFILE
#include "../plc/Request.c"
#include "../plc/Confirm.c"
#include "../plc/Display.c"
#include "../plc/Failure.c"
#include "../plc/ReadMME.c"
#include "../plc/SendMME.c"
#include "../plc/Devices.c"
#include "../mme/EthernetHeader.c"
#include "../mme/QualcommHeader.c"
#include "../mme/UnwantedMessage.c"
#endif

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

#ifndef MAKEFILE
#include "../mme/MMECode.c"
#endif

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

#define ACTION "action"

/*====================================================================*
 *   program variables;
 *--------------------------------------------------------------------*/

#define ACTION_SPND 0x00
#define ACTION_RES 0x01

static struct _code_ const actions [] =

{
	{
		ACTION_SPND,
		"suspend"
	},
	{
		ACTION_RES,
		"resume"
	}
};

/*====================================================================*
 *
 *   signed mod_conn (struct plc * plc, uint8_t TYPE, uint16_t CID);
 *
 *   Contributor(s):
 *	Bill Wike <bill.wike@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

static signed mod_conn (struct plc * plc, uint8_t TYPE, uint16_t CID)

{
	struct channel * channel = (struct channel *) (plc->channel);
	struct message * message = (struct message *) (plc->message);

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_mod_conn_req
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint32_t REQ_ID;
		uint32_t RSVD;
		uint16_t CID;
		uint8_t MOD_CTRL;
	}
	* request = (struct vs_mod_conn_req *) (message);
	struct __packed vs_mod_conn_cnf
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint32_t REQ_ID;
		uint8_t MSTATUS;
		uint16_t ERR_REC_CODE;
		uint32_t RSVD;
		uint16_t CID;
	}
	* confirm = (struct vs_mod_conn_cnf *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	Request (plc, "COQOS modify connection");
	memset (message, 0, sizeof (* message));
	EthernetHeader (& request->ethernet, channel->peer, channel->host, channel->type);
	QualcommHeader (& request->qualcomm, 0, (VS_CONN_MOD | MMTYPE_REQ));
	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
	request->MOD_CTRL = TYPE;
	request->CID = CID;
	if (SendMME (plc) <= 0)
	{
		error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
		return (-1);
	}
	while (ReadMME (plc, 0, (VS_CONN_MOD | MMTYPE_CNF)) > 0)
	{
		if (confirm->MSTATUS)
		{
			Failure (plc, PLC_WONTDOIT);
			return (-1);
		}
		Confirm (plc, "%s connection %04X", (TYPE == ACTION_SPND)? "Suspended": "Resumed", CID);
	}
	return (0);
}

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

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

{
	extern struct channel channel;
	static char const * optv [] =
	{
		"ei:qv",
		"spnd,res cid",
		"CoQos Stream Utility",
		"e\tredirect stderr to stdout",

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

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

#else

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

#endif

		"q\tquiet mode",
		"v\tverbose mode",
		(char const *) (0)
	};

#include "../plc/plc.c"

	uint16_t cid;
	uint8_t type;
	signed code;
	signed c;
	if (getenv (PLCDEVICE))
	{

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

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

#else

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

#endif

	}
	optind = 1;
	while (~ (c = getoptv (argc, argv, optv)))
	{
		switch (c)
		{
		case 'e':
			dup2 (STDOUT_FILENO, STDERR_FILENO);
			break;
		case 'i':

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

			channel.ifindex = atoi (optarg);

#else

			channel.ifname = optarg;

#endif

			break;
		case 'q':
			_setbits (channel.flags, CHANNEL_SILENCE);
			_setbits (plc.flags, PLC_SILENCE);
			break;
		case 'v':
			_setbits (channel.flags, CHANNEL_VERBOSE);
			_setbits (plc.flags, PLC_VERBOSE);
			break;
		default: 
			break;
		}
	}
	argc -= optind;
	argv += optind;
	if ((code = lookup (* argv++, actions, SIZEOF (actions))) == -1)
	{
		assist (* -- argv, ACTION, actions, SIZEOF (actions));
	}
	type = (uint8_t) (code);
	argc--;
	if (argc == 0)
	{
		error (1, ECANCELED, "Missing CID");
	}
	if (! hexencode ((uint8_t *) (& cid), sizeof (cid), * argv++))
	{
		error (1, errno, "Invalid CID");
	}
	cid = htons (cid);
	argc--;
	openchannel (& channel);
	if (! (plc.message = malloc (sizeof (* plc.message))))
	{
		error (1, errno, PLC_NOMEMORY);
	}
	if (! argc)
	{
		mod_conn (& plc, type, cid);
	}
	while ((argc) && (* argv))
	{
		if (! hexencode (channel.peer, sizeof (channel.peer), synonym (* argv, devices, SIZEOF (devices))))
		{
			error (1, errno, PLC_BAD_MAC, * argv);
		}
		mod_conn (& plc, type, cid);
		argc--;
		argv++;
	}
	free (plc.message);
	closechannel (& channel);
	exit (0);
}