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

/*====================================================================*
 *
 *   plchost.c -
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *      Nathaniel Houghton <nhoughto@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

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

#include <unistd.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <ctype.h>
#include <memory.h>
#include <signal.h>
#include <errno.h>
#include <sys/socket.h>

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

#include "../ether/channel.h"
#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/files.h"
#include "../tools/error.h"
#include "../ram/nvram.h"
#include "../ram/sdram.h"
#include "../nvm/nvm.h"
#include "../pib/pib.h"
#include "../plc/plc.h"

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

#ifndef MAKEFILE
#include "../plc/BootDevice2.c"
#include "../plc/BootFirmware2.c"
#include "../plc/BootParameters2.c"
#include "../plc/chipset.c"
#include "../plc/Confirm.c"
#include "../plc/Devices.c"
#include "../plc/Failure.c"
#include "../plc/FlashDevice2.c"
#include "../plc/FlashSoftloader.c"
#include "../plc/FlashFirmware.c"
#include "../plc/FlashParameters.c"
#include "../plc/FlashNVM.c"
#include "../plc/HostActionResponse.c"
#include "../plc/InitDevice2.c"
#include "../plc/ModuleRead.c"
#include "../plc/ModuleSpec.c"
#include "../plc/ModuleSession.c"
#include "../plc/ModuleWrite.c"
#include "../plc/ModuleCommit.c"
#include "../plc/LocalDevices.c"
#include "../plc/NVMSelect.c"
#include "../plc/ReadFirmware2.c"
#include "../plc/ReadParameters2.c"
#include "../plc/Request.c"
#include "../plc/ResetDevice.c"
#include "../plc/ReadMME.c"
#include "../plc/SendMME.c"
#include "../plc/WaitForReset.c"
#include "../plc/WaitForStart.c"
#include "../plc/WaitForRestart.c"
#include "../plc/WriteMEM.c"
#include "../plc/WriteNVM.c"
#include "../plc/WritePIB.c"
#include "../plc/WriteExecuteFirmware2.c"
#include "../plc/WriteExecuteParameters2.c"
#include "../plc/WriteExecuteApplet2.c"
#include "../plc/WriteFirmware2.c"
#include "../plc/PLCSelect.c"
#endif

#ifndef MAKEFILE
#include "../tools/getoptv.c"
#include "../tools/putoptv.c"
#include "../tools/version.c"
#include "../tools/uintspec.c"
#include "../tools/checkfilename.c"
#include "../tools/hexdecode.c"
#include "../tools/hexstring.c"
#include "../tools/todigit.c"
#include "../tools/hexdump.c"
#include "../tools/checksum32.c"
#include "../tools/fdchecksum32.c"
#include "../tools/error.c"
#include "../tools/strfbits.c"
#include "../tools/typename.c"
#endif

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

#ifndef MAKEFILE
#include "../mme/EthernetHeader.c"
#include "../mme/QualcommHeader.c"
#include "../mme/UnwantedMessage.c"
#include "../mme/MMECode.c"
#ifdef AR7x00
#include "../mme/QualcommHeader1.c"
#endif
#endif

#ifndef MAKEFILE
#include "../key/keys.c"
#endif

#ifndef MAKEFILE
#include "../nvm/panther_nvm_file.c"
#endif

#ifndef MAKEFILE
#include "../pib/panther_pib_file.c"
#include "../pib/panther_pib_peek.c"
#endif

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

#define NEWPIB "user.pib"
#define NEWNVM "user.nvm"

/*====================================================================*
 *
 *   signed function (struct plc * plc);
 *
 *   wait indefinitely for VS_HOST_ACTION messages; service the device
 *   as directed; this function is for demonstration and experimentation
 *   only; it will stop dead - like a bug! - on error;
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

signed function (struct plc * plc)

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

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

	struct __packed vs_host_action_ind
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MACTION;
		uint8_t MAJOR_VERSION;
		uint8_t MINOR_VERSION;
	}
	* indicate = (struct vs_host_action_ind *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	char firmware [PLC_VERSION_STRING];
	char const * FactoryNVM = plc->NVM.name;
	char const * FactoryPIB = plc->PIB.name;
	signed status;
	while (true)
	{
		status = ReadMME (plc, 0, (VS_HOST_ACTION | MMTYPE_IND));
		if (status < 0)
		{
			break;
		}
		if (status > 0)
		{
			signed action = indicate->MACTION;
			memcpy (channel->peer, indicate->ethernet.OSA, sizeof (channel->peer));
			if (HostActionResponse (plc))
			{
				return (-1);
			}
			if (action == 0x00)
			{
				if (BootDevice2 (plc))
				{
					return (-1);
				}
				if (WaitForStart (plc, firmware, sizeof (firmware)))
				{
					return (-1);
				}
				if (_anyset (plc->flags, PLC_FLASH_DEVICE))
				{
					FlashDevice2 (plc, (PLC_COMMIT_FORCE | PLC_COMMIT_NORESET | PLC_COMMIT_FACTPIB));
				}
				continue;
			}
			if (action == 0x01)
			{
				close (plc->NVM.file);
				if (ReadFirmware2 (plc))
				{
					return (-1);
				}
				if ((plc->NVM.file = open (plc->NVM.name = plc->nvm.name, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->NVM.name);
				}
				continue;
			}
			if (action == 0x02)
			{
				close (plc->PIB.file);
				if (ReadParameters2 (plc))
				{
					return (-1);
				}
				if ((plc->PIB.file = open (plc->PIB.name = plc->pib.name, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->PIB.name);
				}
				if (ResetDevice (plc))
				{
					return (-1);
				}
				continue;
			}
			if (action == 0x03)
			{
				close (plc->PIB.file);
				if (ReadParameters2 (plc))
				{
					return (-1);
				}
				if ((plc->PIB.file = open (plc->PIB.name = plc->pib.name, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->PIB.name);
				}
				close (plc->NVM.file);
				if (ReadFirmware2 (plc))
				{
					return (-1);
				}
				if ((plc->NVM.file = open (plc->NVM.name = plc->nvm.name, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->NVM.name);
				}
				if (ResetDevice (plc))
				{
					return (-1);
				}
				continue;
			}
			if (action == 0x04)
			{
				if (InitDevice2 (plc))
				{
					return (-1);
				}
				continue;
			}
			if (action == 0x05)
			{
				close (plc->NVM.file);
				if ((plc->NVM.file = open (plc->NVM.name = FactoryNVM, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->NVM.name);
				}
				close (plc->PIB.file);
				if ((plc->PIB.file = open (plc->PIB.name = FactoryPIB, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->PIB.name);
				}
				if (ResetDevice (plc))
				{
					return (-1);
				}
				continue;
			}
			if (action == 0x06)
			{
				close (plc->PIB.file);
				if (ReadParameters2 (plc))
				{
					return (-1);
				}
				if ((plc->PIB.file = open (plc->PIB.name = plc->pib.name, O_BINARY | O_RDONLY)) == -1)
				{
					error (1, errno, "%s", plc->PIB.name);
				}
				continue;
			}
			if (action == 0x07)
			{
				error (0, 0, "Host has rebooted.");
				continue;
			}
			error (0, ENOSYS, "Host Action 0x%02X", action);
		}
	}
	return (0);
}

/*====================================================================*
 *
 *   int main (int argc, char const * argv[]);
 *
 *   parse command line, populate plc structure and perform selected
 *   operations; show help summary when asked; see getoptv and putoptv
 *   to understand command line parsing and help summary display; see
 *   plc.h for the definition of struct plc;
 *
 *--------------------------------------------------------------------*/

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

{
	extern struct channel channel;
	extern void terminate (signo_t);
	static char const * optv [] =
	{
		"Fi:n:N:p:P:qS:t:vw:x",
		"-N file -P file [-S file]",
		"Qualcomm Atheros PLC Host Daemon",
		"F [F]\tflash [force] non-volatile memory",

#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

		"n f\tuser firmware file is (f)",
		"N f\tfirmware file is (f)",
		"p f\tuser parameter file is (f)",
		"P f\tparameter file is (f)",
		"q\tquiet mode",
		"S f\tsoftloader file is (f)",
		"t n\tread timeout is (n) milliseconds [" LITERAL (CHANNEL_TIMEOUT) "]",
		"v\tverbose mode",
		"w n\twakeup every (n) seconds [" LITERAL (PLC_LONGTIME) "]",
		"x\texit on error",
		(char const *) (0)
	};

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

	signed c;
	if (getenv (PLCDEVICE))
	{

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

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

#else

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

#endif

	}
	optind = 1;
	plc.timer = PLC_LONGTIME;
	while (~ (c = getoptv (argc, argv, optv)))
	{
		switch (c)
		{
		case 'd':
			_setbits (plc.flags, PLC_DAEMON);
			break;
		case 'F':
			_setbits (plc.module, (VS_MODULE_MAC | VS_MODULE_PIB));
			if (_anyset (plc.flags, PLC_FLASH_DEVICE))
			{
				_setbits (plc.module, VS_MODULE_FORCE);
			}
			_setbits (plc.flags, PLC_FLASH_DEVICE);
			break;
		case 'i':

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

			channel.ifindex = atoi (optarg);

#else

			channel.ifname = optarg;

#endif

			break;
		case 'N':
			if (! checkfilename (optarg))
			{
				error (1, EINVAL, "%s", optarg);
			}
			if ((plc.NVM.file = open (plc.NVM.name = optarg, O_BINARY | O_RDONLY)) == -1)
			{
				error (1, errno, "%s", plc.NVM.name);
			}
			if (panther_nvm_file (& plc.NVM))
			{
				error (1, errno, "Bad panther image file: %s", plc.NVM.name);
			}
			_setbits (plc.flags, PLC_WRITE_MAC);
			break;
		case 'n':
			if (! checkfilename (optarg))
			{
				error (1, EINVAL, "%s", optarg);
			}
			if ((plc.nvm.file = open (plc.nvm.name = optarg, O_BINARY | O_CREAT | O_RDWR | O_TRUNC, FILE_FILEMODE)) == -1)
			{
				error (1, errno, "%s", plc.nvm.name);
			}
			break;
		case 'P':
			if (! checkfilename (optarg))
			{
				error (1, EINVAL, "%s", optarg);
			}
			if ((plc.PIB.file = open (plc.PIB.name = optarg, O_BINARY | O_RDONLY)) == -1)
			{
				error (1, errno, "%s", plc.PIB.name);
			}
			if (panther_pib_file (& plc.PIB))
			{
				error (1, errno, "Bad panther parameter file: %s", plc.PIB.name);
			}
			_setbits (plc.flags, PLC_WRITE_PIB);
			break;
		case 'p':
			if (! checkfilename (optarg))
			{
				error (1, EINVAL, "%s", optarg);
			}
			if ((plc.pib.file = open (plc.pib.name = optarg, O_BINARY | O_CREAT | O_RDWR | O_TRUNC, FILE_FILEMODE)) == -1)
			{
				error (1, errno, "%s", plc.pib.name);
			}
			break;
		case 'q':
			_setbits (channel.flags, CHANNEL_SILENCE);
			_setbits (plc.flags, PLC_SILENCE);
			break;
		case 'S':
			if (! checkfilename (optarg))
			{
				error (1, EINVAL, "%s", optarg);
			}
			if ((plc.SFT.file = open (plc.SFT.name = optarg, O_BINARY | O_RDONLY)) == -1)
			{
				error (1, errno, "%s", plc.SFT.name);
			}
			if (panther_nvm_file (& plc.SFT))
			{
				error (1, errno, "Bad panther image file: %s", plc.SFT.name);
			}
			break;
		case 't':
			channel.timeout = (signed) (uintspec (optarg, 0, UINT_MAX));
			break;
		case 'v':
			_setbits (channel.flags, CHANNEL_VERBOSE);
			_setbits (plc.flags, PLC_VERBOSE);
			break;
		case 'w':
			plc.timer = (unsigned) (uintspec (optarg, 1, 3600));
			break;
		case 'x':
			_setbits (plc.flags, PLC_BAILOUT);
			break;
		default: 
			break;
		}
	}
	argc -= optind;
	argv += optind;
	if (argc)
	{
		error (1, ENOTSUP, ERROR_TOOMANY);
	}
	if (plc.NVM.file == -1)
	{
		error (1, ECANCELED, "No host NVM file named");
	}
	if (plc.PIB.file == -1)
	{
		error (1, ECANCELED, "No host PIB file named");
	}
	if (plc.SFT.file == -1)
	{
		if (_anyset (plc.flags, PLC_FLASH_DEVICE))
		{
			error (1, ECANCELED, "No Softloader file named");
		}
	}
	if (plc.nvm.file == -1)
	{
		if ((plc.nvm.file = open (plc.nvm.name = NEWNVM, O_BINARY | O_CREAT | O_RDWR | O_TRUNC, FILE_FILEMODE)) == -1)
		{
			error (1, errno, "%s", plc.nvm.name);
		}
	}
	if (plc.pib.file == -1)
	{
		if ((plc.pib.file = open (plc.pib.name = NEWPIB, O_BINARY | O_CREAT | O_RDWR | O_TRUNC, FILE_FILEMODE)) == -1)
		{
			error (1, errno, "%s", plc.pib.name);
		}
	}
	openchannel (& channel);
	if (! (plc.message = malloc (sizeof (* plc.message))))
	{
		error (1, errno, PLC_NOMEMORY);
	}
	function (& plc);
	free (plc.message);
	closechannel (& channel);
	exit (0);
}