/*====================================================================*
 *
 *   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 "AS IS" 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.
 *
 *--------------------------------------------------------------------*/

/*====================================================================*"
 *
 *   plchost.c -
 *
 *
 *   Contributor(s):
 *      Charles Maier
 *
 *--------------------------------------------------------------------*/

/*====================================================================*"
 *   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 "../tools/permissions.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/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"
#include "../tools/desuid.c"
#endif

#ifndef MAKEFILE
#include "../ether/initchannel.c"
#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/nvmfile2.c"
#endif

#ifndef MAKEFILE
#include "../pib/pibfile2.c"
#include "../pib/pibpeek2.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
 *   only; it will stop dead - like a bug! - on error;
 *
 *
 *   Contributor(s):
 *      Charles Maier
 *
 *--------------------------------------------------------------------*/

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;
			}
			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;

	initchannel (&channel);
	desuid ();

	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)) != -1)
	{
		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 (nvmfile2 (&plc.NVM))
			{
				error (1, errno, "Bad firmware 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 (pibfile2 (&plc.PIB))
			{
				error (1, errno, "Bad 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 (nvmfile2 (&plc.SFT))
			{
				error (1, errno, "Bad firmware 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);
}