    /*====================================================================*
     *
     *   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.
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *
     *   plcID.c - Qualcomm Atheros Powerline Device Identity
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

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

    #include <unistd.h>
    #include <stdlib.h>
    #include <limits.h>
    #include <string.h>
    #include <ctype.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"
    #include "../ram/nvram.h"
    #include "../ram/sdram.h"
    #include "../nvm/nvm.h"
    #include "../pib/pib.h"
    #include "../mme/mme.h"

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

    #ifndef MAKEFILE
    #include "../tools/getoptv.c"
    #include "../tools/putoptv.c"
    #include "../tools/version.c"
    #include "../tools/uintspec.c"
    #include "../tools/hexencode.c"
    #include "../tools/hexdecode.c"
    #include "../tools/todigit.c"
    #include "../tools/hexdump.c"
    #include "../tools/hexout.c"
    #include "../tools/error.c"
    #include "../tools/synonym.c"
    #include "../tools/checksum32.c"
    #include "../tools/typename.c"
    #endif

    #ifndef MAKEFILE
    #include "../plc/Display.c"
    #include "../plc/Devices.c"
    #include "../plc/Failure.c"
    #include "../plc/ReadMME.c"
    #include "../plc/SendMME.c"
    #include "../plc/WaitForStart.c"
    #include "../plc/chipset.c"
    #endif

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

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

    #define PLCID_DAK 0
    #define PLCID_NMK 1
    #define PLCID_MAC 2
    #define PLCID_MFG 3
    #define PLCID_USR 4
    #define PLCID_NET 5

    /*====================================================================*
     *
     *   signed PLCSelect (struct plc * plc, signed old (struct plc *), signed new (struct plc *));
     *
     *   plc.h
     *
     *   wait for device to start in order to determine chipset then call
     *   the approproate function based on chipset; unfortunately, chipset
     *   detection and selection may not be this simple in the future;
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    signed PLCSelect (struct plc * plc, signed old (struct plc *), signed new (struct plc *))

    {
    	char firmware [PLC_VERSION_STRING];
    	if (WaitForStart (plc, firmware, sizeof (firmware)))
    	{
    		Failure (plc, PLC_NODETECT);
    		exit (1);
    	}
    	return ((plc->hardwareID < CHIPSET_QCA7420)? old (plc): new (plc));
    }

    /*====================================================================*
     *
     *   signed ReadKey1 (struct plc * plc);
     *
     *   read the first block of the PIB from a device then echo one of
     *   several parameters on stdout as a string; program output can be
     *   used in scripts to define variables or compare strings;
     *
     *   this function is an abridged version of ReadParameters(); it reads only
     *   the first 1024 bytes of the PIB then stops; most parameters of
     *   general interest occur in that block;
     *
     *--------------------------------------------------------------------*/

    static signed ReadKey1 (struct plc * plc)

    {
    	static signed count = 0;
    	struct channel * channel = (struct channel *) (plc->channel);
    	struct message * message = (struct message *) (plc->message);

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

    	struct __packed vs_rd_mod_request
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint8_t MODULEID;
    		uint8_t RESERVED;
    		uint16_t MLENGTH;
    		uint32_t MOFFSET;
    		uint8_t DAK [16];
    	}
    	* request = (struct vs_rd_mod_request *) (message);
    	struct __packed vs_rd_mod_confirm
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint8_t MSTATUS;
    		uint8_t RESERVED1 [3];
    		uint8_t MODULEID;
    		uint8_t RESERVED2;
    		uint16_t MLENGTH;
    		uint32_t MOFFSET;
    		uint32_t MCHKSUM;
    		struct simple_pib pib;
    	}
    	* confirm = (struct vs_rd_mod_confirm *) (message);

    #ifndef __GNUC__
    #pragma pack (pop)
    #endif

    	memset (message, 0, sizeof (* message));
    	EthernetHeader (& request->ethernet, channel->peer, channel->host, channel->type);
    	QualcommHeader (& request->qualcomm, 0, (VS_RD_MOD | MMTYPE_REQ));
    	request->MODULEID = VS_MODULE_PIB;
    	request->MLENGTH = HTOLE16 (PLC_RECORD_SIZE);
    	request->MOFFSET = HTOLE32 (0);
    	plc->packetsize = ETHER_MIN_LEN - ETHER_CRC_LEN;
    	if (SendMME (plc) <= 0)
    	{
    		error (1, errno, CHANNEL_CANTSEND);
    	}
    	while (ReadMME (plc, 0, (VS_RD_MOD | MMTYPE_CNF)) > 0)
    	{
    		if (confirm->MSTATUS)
    		{
    			Failure (plc, PLC_WONTDOIT);
    			return (-1);
    		}
    		if (count++ > 0)
    		{
    			putc (plc->coupling, stdout);
    		}
    		if (plc->action == PLCID_MAC)
    		{
    			hexout (confirm->pib.MAC, sizeof (confirm->pib.MAC), HEX_EXTENDER, 0, stdout);
    		}
    		else if (plc->action == PLCID_DAK)
    		{
    			hexout (confirm->pib.DAK, sizeof (confirm->pib.DAK), HEX_EXTENDER, 0, stdout);
    		}
    		else if (plc->action == PLCID_NMK)
    		{
    			hexout (confirm->pib.NMK, sizeof (confirm->pib.NMK), HEX_EXTENDER, 0, stdout);
    		}
    		else if (plc->action == PLCID_MFG)
    		{
    			confirm->pib.MFG [PIB_HFID_LEN -1] = (char) (0);
    			printf ("%s", confirm->pib.MFG);
    		}
    		else if (plc->action == PLCID_USR)
    		{
    			confirm->pib.USR [PIB_HFID_LEN -1] = (char) (0);
    			printf ("%s", confirm->pib.USR);
    		}
    		else if (plc->action == PLCID_NET)
    		{
    			confirm->pib.NET [PIB_HFID_LEN -1] = (char) (0);
    			printf ("%s", confirm->pib.NET);
    		}
    	}
    	if (plc->packetsize < 0)
    	{
    		error (1, errno, CHANNEL_CANTREAD);
    	}
    	return (0);
    }

    /*====================================================================*
     *
     *   signed ReadKey2 (struct plc * plc);
     *
     *   plc.h
     *
     *   read start of parameter chain from the device using a single
     *   VS_MODULE_OPERATION message; search parameter chain for PIB and
     *   print requested plc->action on stdout;
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static signed ReadKey2 (struct plc * plc)

    {
    	static signed count = 0;
    	struct channel * channel = (struct channel *) (plc->channel);
    	struct message * message = (struct message *) (plc->message);
    	struct nvm_header2 * nvm_header;
    	uint32_t origin = ~ 0;
    	uint32_t offset = 0;
    	signed module = 0;
    	char * filename = "device";

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

    	struct __packed vs_module_operation_read_request
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint32_t RESERVED;
    		uint8_t NUM_OP_DATA;
    		struct __packed
    		{
    			uint16_t MOD_OP;
    			uint16_t MOD_OP_DATA_LEN;
    			uint32_t MOD_OP_RSVD;
    			uint16_t MODULE_ID;
    			uint16_t MODULE_SUB_ID;
    			uint16_t MODULE_LENGTH;
    			uint32_t MODULE_OFFSET;
    		}
    		MODULE_SPEC;
    	}
    	* request = (struct vs_module_operation_read_request *) (message);
    	struct __packed vs_module_operation_read_confirm
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint16_t MSTATUS;
    		uint16_t ERR_REC_CODE;
    		uint32_t RESERVED;
    		uint8_t NUM_OP_DATA;
    		struct __packed
    		{
    			uint16_t MOD_OP;
    			uint16_t MOD_OP_DATA_LEN;
    			uint32_t MOD_OP_RSVD;
    			uint16_t MODULE_ID;
    			uint16_t MODULE_SUB_ID;
    			uint16_t MODULE_LENGTH;
    			uint32_t MODULE_OFFSET;
    		}
    		MODULE_SPEC;
    		uint8_t MODULE_DATA [PLC_MODULE_SIZE];
    	}
    	* confirm = (struct vs_module_operation_read_confirm *) (message);

    #ifndef __GNUC__
    #pragma pack (pop)
    #endif

    	memset (message, 0, sizeof (* message));
    	EthernetHeader (& request->ethernet, channel->peer, channel->host, channel->type);
    	QualcommHeader (& request->qualcomm, 0, (VS_MODULE_OPERATION | MMTYPE_REQ));
    	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
    	request->NUM_OP_DATA = 1;
    	request->MODULE_SPEC.MOD_OP = HTOLE16 (0);
    	request->MODULE_SPEC.MOD_OP_DATA_LEN = HTOLE16 (sizeof (request->MODULE_SPEC));
    	request->MODULE_SPEC.MOD_OP_RSVD = HTOLE32 (0);
    	request->MODULE_SPEC.MODULE_ID = HTOLE16 (PLC_MODULEID_PARAMETERS);
    	request->MODULE_SPEC.MODULE_SUB_ID = HTOLE16 (0);
    	request->MODULE_SPEC.MODULE_LENGTH = HTOLE16 (PLC_MODULE_SIZE);
    	request->MODULE_SPEC.MODULE_OFFSET = HTOLE32 (0);
    	if (SendMME (plc) <= 0)
    	{
    		error (1, errno, CHANNEL_CANTSEND);
    	}
    	while (ReadMME (plc, 0, (VS_MODULE_OPERATION | MMTYPE_CNF)) > 0)
    	{
    		if (confirm->MSTATUS)
    		{
    			Failure (plc, PLC_WONTDOIT);
    			return (-1);
    		}
    		if (count++ > 0)
    		{
    			putc (plc->coupling, stdout);
    		}
    		do
    		{
    			nvm_header = (struct nvm_header2 *) (& confirm->MODULE_DATA [offset]);
    			if (LE16TOH (nvm_header->MajorVersion) != 1)
    			{
    				if (_allclr (plc->flags, PLC_SILENCE))
    				{
    					error (0, errno, NVM_HDR_VERSION, filename, module);
    				}
    				return (-1);
    			}
    			if (LE16TOH (nvm_header->MinorVersion) != 1)
    			{
    				if (_allclr (plc->flags, PLC_SILENCE))
    				{
    					error (0, errno, NVM_HDR_VERSION, filename, module);
    				}
    				return (-1);
    			}
    			if (LE32TOH (nvm_header->PrevHeader) != origin)
    			{
    				if (_allclr (plc->flags, PLC_SILENCE))
    				{
    					error (0, errno, NVM_HDR_LINK, filename, module);
    				}
    				return (-1);
    			}
    			if (checksum32 (nvm_header, sizeof (* nvm_header), 0))
    			{
    				error (0, 0, NVM_HDR_CHECKSUM, filename, module);
    				return (-1);
    			}
    			origin = offset;
    			offset += sizeof (* nvm_header);
    			if (LE32TOH (nvm_header->ImageType) == NVM_IMAGE_PIB)
    			{
    				struct simple_pib * pib = (struct simple_pib *) (& confirm->MODULE_DATA [offset]);
    				if (plc->action == PLCID_MAC)
    				{
    					hexout (pib->MAC, sizeof (pib->MAC), HEX_EXTENDER, 0, stdout);
    				}
    				else if (plc->action == PLCID_DAK)
    				{
    					hexout (pib->DAK, sizeof (pib->DAK), HEX_EXTENDER, 0, stdout);
    				}
    				else if (plc->action == PLCID_NMK)
    				{
    					hexout (pib->NMK, sizeof (pib->NMK), HEX_EXTENDER, 0, stdout);
    				}
    				else if (plc->action == PLCID_MFG)
    				{
    					pib->MFG [PIB_HFID_LEN -1] = (char) (0);
    					printf ("%s", pib->MFG);
    				}
    				else if (plc->action == PLCID_USR)
    				{
    					pib->USR [PIB_HFID_LEN -1] = (char) (0);
    					printf ("%s", pib->USR);
    				}
    				else if (plc->action == PLCID_NET)
    				{
    					pib->NET [PIB_HFID_LEN -1] = (char) (0);
    					printf ("%s", pib->NET);
    				}
    				break;
    			}
    			if (checksum32 (& confirm->MODULE_DATA [offset], LE32TOH (nvm_header->ImageLength), nvm_header->ImageChecksum))
    			{
    				if (_allclr (plc->flags, PLC_SILENCE))
    				{
    					error (0, errno, NVM_IMG_CHECKSUM, filename, module);
    				}
    				return (-1);
    			}
    			offset += LE32TOH (nvm_header->ImageLength);
    			module++;
    		}
    		while (~ nvm_header->NextHeader);
    	}
    	if (plc->packetsize < 0)
    	{
    		error (1, errno, CHANNEL_CANTREAD);
    	}
    	return (0);
    }

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

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

    {
    	extern struct channel channel;
    	static char const * optv [] =
    	{
    		"Ac:Dei:MnNqSUv",
    		"device",
    		"Qualcomm Atheros Powerline Device Identity",
    		"A\tEthernet address (MAC)",
    		"c c\tcharacter delimiter is (c)",
    		"D\tDevice Access Key (DAK)",
    		"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

    		"M\tNetwork Membership Key (NMK)",
    		"n\tappend newline on output",
    		"N\tnetwork HFID",
    		"q\tquiet mode",
    		"S\tmanufacturer HFID",
    		"U\tuser HFID",
    		"v\tverbose mode",
    		(char const *) (0)
    	};

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

    	signed c;
    	plc.action = PLCID_DAK;
    	plc.coupling = '\n';
    	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 'A':
    			plc.action = PLCID_MAC;
    			break;
    		case 'c':
    			plc.coupling = * optarg;
    			break;
    		case 'D':
    			plc.action = PLCID_DAK;
    			break;
    		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 'M':
    			plc.action = PLCID_NMK;
    			break;
    		case 'n':
    			_setbits (plc.flags, PLC_NEWLINE);
    			break;
    		case 'N':
    			plc.action = PLCID_NET;
    			break;
    		case 'q':
    			_setbits (channel.flags, CHANNEL_SILENCE);
    			_setbits (plc.flags, PLC_SILENCE);
    			break;
    		case 'S':
    			plc.action = PLCID_MFG;
    			break;
    		case 'U':
    			plc.action = PLCID_USR;
    			break;
    		case 'v':
    			_setbits (channel.flags, CHANNEL_VERBOSE);
    			_setbits (plc.flags, PLC_VERBOSE);
    			break;
    		default:
    			break;
    		}
    	}
    	argc -= optind;
    	argv += optind;
    	openchannel (& channel);
    	if (! (plc.message = malloc (sizeof (* plc.message))))
    	{
    		error (1, errno, PLC_NOMEMORY);
    	}
    	if (! argc)
    	{
    		PLCSelect (& plc, ReadKey1, ReadKey2);
    	}
    	while ((argc) && (* argv))
    	{
    		if (! hexencode (channel.peer, sizeof (channel.peer), synonym (* argv, devices, SIZEOF (devices))))
    		{
    			error (1, errno, PLC_BAD_MAC, * argv);
    		}
    		PLCSelect (& plc, ReadKey1, ReadKey2);
    		argv++;
    		argc--;
    	}
    	if (_anyset (plc.flags, PLC_NEWLINE))
    	{
    		printf ("\n");
    	}
    	free (plc.message);
    	closechannel (& channel);
    	return (0);
    }

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