/*
 * 	Module_RFID.h
 *
 *  Created on: 2019-10-24
 *  Update: 2020-07-29
 *  Author: Eason Yang
 *	Version: D0.01
 */

#include "Module_RFID.h"

//==================================
// PRINT OUT LOG FORMAT
//==================================
#define SystemLogMessage
#define DEBUG_INFO_1(format, args...) StoreLogMessage("[%s:%d][%s][Info] "format, __FILE__, __LINE__, __FUNCTION__, ##args)
#define DEBUG_WARN_1(format, args...) StoreLogMessage("[%s:%d][%s][Warn] "format, __FILE__, __LINE__, __FUNCTION__, ##args)
#define DEBUG_ERROR_1(format, args...) StoreLogMessage("[%s:%d][%s][Error] "format, __FILE__, __LINE__, __FUNCTION__, ##args)

//==================================
// SYSTEM CONSTANT
//==================================
#define Debug
#define ARRAY_SIZE(A)		(sizeof(A) / sizeof(A[0]))
#define PASS				1
#define FAIL				-1

//==================================
// RFID CMD CONSTANT
//==================================
unsigned int RFID_CMD_ISO1443A_REQUEST				= 0x20;
unsigned int RFID_CMD_ISO1443B_REQUEST				= 0x60;
unsigned int RFID_CMD_FELICA_POLLING_REQUEST		= 0x2F;
unsigned int RFID_CMD_HALT_14443A					= 0x28;
unsigned int RFID_CMD_BLOCK_READ					= 0x21;
unsigned int RFID_CMD_BLOCK_WRITE					= 0x22;
unsigned int RFID_CMD_BUZZER_SET					= 0x14;
unsigned int RFID_CMD_RF_OUTPUT_LEVEL_SET			= 0x02;
unsigned int RFID_CMD_DEFAULT_AUTO_DETECTING_CARD	= 0x1D;

//==================================
// RFID MODE CONSTANT
//==================================
unsigned char WUPA	= 0;
unsigned char REQA	= 1;
unsigned char AFI	= 0;

//==================================
// MIFARE CARD LENGTH
//==================================
unsigned int LENGTH_0	= 0;
unsigned int LENGTH_4	= 4;
unsigned int LENGTH_6	= 6;
unsigned int LENGTH_7	= 7;
unsigned int LENGTH_10	= 10;

//==================================
// RF output Level constant
//==================================
unsigned int RF_STRONGEST	= 0x00;
unsigned int RF_STRONGER	= 0x01;
unsigned int RF_WEAK		= 0x02;
unsigned int RF_WEAKEST		= 0x03;

//==================================
// Default of Automatic Detecting constant
//==================================
unsigned int TURN_OFF 			= 0x00;
unsigned int TURN_ON  			= 0X01;
unsigned int TURN_TEMPORARILY	= 0x11;

//==================================
// MIFARE SECTOR SPACE
//==================================
#define ROW					6
#define COLUMN				16

unsigned char sectorKeyA[COLUMN][ROW] = {	{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
											{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
	 	 	 	 	 	 	 	 	 	 };

unsigned char serialNumber[32];
unsigned int cardLength;

//==================================
// SystemLog message
//==================================
#ifdef SystemLogMessage
int StoreLogMessage(const char *fmt, ...)
{
	char Buf[4096 + 256];
	char buffer[4096];
	time_t CurrentTime;
	struct tm *tm;
	va_list args;

	va_start(args, fmt);
	int rc = vsnprintf(buffer, sizeof(buffer), fmt, args);
	va_end(args);

	memset(Buf, 0, sizeof(Buf));
	CurrentTime = time(NULL);
	tm = localtime(&CurrentTime);
	sprintf(Buf,
			"echo -n \"[%04d.%02d.%02d %02d:%02d:%02d] - %s\" >> /Storage/SystemLog/[%04d.%02d]RFID_SystemLog",
			tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour,
			tm->tm_min, tm->tm_sec, buffer, tm->tm_year + 1900, tm->tm_mon + 1);
	system(Buf);
	#ifdef Debug
	printf("[%04d.%02d.%02d %02d:%02d:%02d] - %s", tm->tm_year + 1900,
			tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
			buffer);
	#endif

	return rc;
}
#endif

//==========================================
// Module's command send/receive
//==========================================
int system_command(int uart, unsigned char* cmd,int length, unsigned char* rx)
{
	int len;

	//sleep(2); //required to make flush work, for some reason
	tcflush(uart,TCIOFLUSH);
	if(write(uart, cmd, length) >= 0)
	{
		usleep(100000);
		len = read(uart, rx, 256);
	}
	else
	{
		#ifdef SystemLogMessage
		DEBUG_ERROR_1("system command %s response fail.\n", cmd);
		#endif
	}

	return len;
}

//==========================================
// Calculation checksum function
//==========================================
char ClaCheckSum(unsigned char *buffer, int len)
{
	int idx;
	char chksum = 0;

	for(idx = 0 ; idx < len-1 ; idx++)
	{
		chksum ^= *(buffer+idx);
	}

	return chksum;
}

bool getRequestCardSN(int Fd, int moduleType, RFID* rfid)
{
	bool isSuccess = false;

	if(ISO14443A_REQUEST_SN(Fd,moduleType,serialNumber) == true)
	{
		rfid->cardType = ISO14443A;

		if(cardLength == LENGTH_4)
		{
			rfid->snType = RFID_SN_TYPE_4BYTE;
			memcpy(rfid->currentCard, &serialNumber, 32);
		}
		else if(cardLength == LENGTH_7)
		{
			rfid->snType = RFID_SN_TYPE_7BYTE;
			memcpy(rfid->currentCard, &serialNumber, 32);
		}

		isSuccess = true;
	}
	else if(ISO14443B_REQUEST_SN(Fd,moduleType,serialNumber) == true)
	{
		rfid->cardType = IS014443B;
		rfid->snType = RFID_SN_TYPE_4BYTE;
		memcpy(rfid->currentCard, &serialNumber, 32);
		sleep(2);

		isSuccess = true;
	}
	else if(FELICA_REQUEST_SN(Fd,moduleType,serialNumber) == true)
	{
		rfid->cardType = FELICA;
		rfid->snType = RFID_SN_TYPE_6BYTE;
		memcpy(rfid->currentCard, &serialNumber, 32);
		sleep(2);

		isSuccess = true;
	}
	else
	{}

	return isSuccess;
}

//==========================================
// ISO14443A Request SN function
//==========================================
bool ISO14443A_REQUEST_SN(int Fd, int moduleType, unsigned char *data)
{
	bool isSuccess = false;
	int tx_len = 4;
	unsigned char txByte[tx_len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = tx_len-1;
			txByte[1] = RFID_CMD_ISO1443A_REQUEST;
			txByte[2] = REQA;
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof (rxByte));
				
				if(system_command(Fd, txByte, tx_len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof(rxByte));

					if(tmp[1] == RFID_CMD_ISO1443A_REQUEST)
					{
						if(tmp[0] == 0x09)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("MIFARE CLASSIC.\n");
							#endif

							cardLength = LENGTH_4;
							memcpy(data, rxByte+2, cardLength);

							isSuccess = true;
						}
						else if(tmp[0] == 0x0C)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("MIFARE PLUS.\n");
							#endif

							cardLength = LENGTH_7;
							memcpy(data, rxByte+2, cardLength);

							isSuccess = true;
						}
						else
						{}
					}
					else if (tmp[1] == 0xDF)
					{
						cardLength = LENGTH_0;
						isSuccess = false;
					}
				}
				else
				{}
			}
			else
			{}

			break;
	}

	return isSuccess;
}

//==========================================
// ISO14443B Request SN function
//==========================================
bool ISO14443B_REQUEST_SN(int Fd, int moduleType, unsigned char *data)
{
	bool isSuccess = false;
	int cardLength;
	int tx_len = 5;
	unsigned char txByte[tx_len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = tx_len-1;
			txByte[1] = RFID_CMD_ISO1443B_REQUEST;
			txByte[2] = WUPA;
			txByte[3] = AFI;
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof (rxByte));
				
				if(system_command(Fd, txByte, tx_len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof(rxByte));

					if(tmp[1] == RFID_CMD_ISO1443B_REQUEST)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("ISO14443 TYPE B.\n");
						#endif

						cardLength = LENGTH_4;
						memcpy(data, rxByte+3, cardLength);

						isSuccess = true;
					}
					else if(tmp[1] == 0x9F)
					{
						cardLength = LENGTH_0;
						isSuccess = false;
					}
				}
				else
				{}
			}
			else
			{}

			break;
	}

	return isSuccess;
}

//==========================================
// FELICA Request SN function
//==========================================
bool FELICA_REQUEST_SN(int Fd, int moduleType, unsigned char *data)
{
	bool isSuccess = false;
	int cardLength;
	int tx_len = 9;
	unsigned char txByte[tx_len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = tx_len-1;
			txByte[1] = RFID_CMD_FELICA_POLLING_REQUEST;
			txByte[2] = 0x06;
			txByte[3] = 0x00;
			txByte[4] = 0xFF;
			txByte[5] = 0xFF;
			txByte[6] = 0x01;
			txByte[7] = 0x00;
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof (rxByte));
				
				if(system_command(Fd, txByte, tx_len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof(rxByte));

					if(tmp[1] == RFID_CMD_FELICA_POLLING_REQUEST)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("FELICA.\n");
						#endif

						cardLength = LENGTH_6;
						memcpy(data, rxByte+6, cardLength);

						isSuccess = true;
					}
					else if(tmp[1] == 0xD0)
					{
						cardLength = LENGTH_0;
						isSuccess = false;
					}
				}
				else
				{}
			}
			else
			{}

			break;
	}

	return isSuccess;
}

//==========================================
// Read block data from RFID card
//==========================================
bool getBlockRead(int Fd, int moduleType, int block, unsigned char keyId, unsigned char *data)
{
	bool isSuccess = false;
	int i;
	int j = 0;
	int len = 11;
	unsigned char txByte[len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = 0x0A;
			txByte[1] = RFID_CMD_BLOCK_READ;
			txByte[2] = keyId;
			txByte[3] = block;
			for(i = 4; i < 10; i++)
			{
				if( j < sizeof (sectorKeyA[0]))
				{
					txByte[i] = sectorKeyA[(int)(block/4)][j];
					j++;
				}
			}
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof(rxByte));
				
				if(system_command(Fd, txByte, len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof (rxByte));

					if((tmp[1] == RFID_CMD_BLOCK_READ))
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Read block ok.\n");
						#endif

						memcpy(data, rxByte+2, 16);

						isSuccess = true;
					}
					else if (tmp[1] == 0xDE)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Read block failed.\n");
						#endif
					}
					else
					{}
				}
				else
				{}
			}
			else
			{}

			break;
	}

	return isSuccess;
}

//==========================================
// Write data into RFID card block
//==========================================
bool setBlockWrite(int Fd, int moduleType, int block, unsigned char keyid, unsigned char *data)
{
	bool isSuccess = false;
	int i;
	int j = 0;
	int len = 27;
	unsigned char txByte[len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = 0x1A;
			txByte[1] = RFID_CMD_BLOCK_WRITE;
			txByte[2] = keyid;
			txByte[3] = block;

			for(i = 4; i < 10; i++)
			{
				if( j < sizeof (sectorKeyA[0]))
				{
					txByte[i] = sectorKeyA[(int)(block/4)][j];
					j++;
				}
			}
			memcpy(txByte+10, data, 16);
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,(ARRAY_SIZE(txByte)));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof(rxByte));
				
				if(system_command(Fd, txByte, len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof (rxByte));

					if(tmp[1] == RFID_CMD_BLOCK_WRITE)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Write block ok.\n");
						#endif

						isSuccess = true;
					}
					else if(tmp[1] == 0xDD)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Write block failed.\n");
						#endif

						isSuccess = false;
					}
				}
				else
				{}
			}
			else
			{}

			break;
	}

	return isSuccess;
}

//==========================================
// Buzzer set (EWT Module)
//==========================================
void setBuzzer(int Fd, int moduleType, unsigned char time)
{
	int len = 4;
	unsigned char txByte[len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = 0x03;
			txByte[1] = RFID_CMD_BUZZER_SET;
			if(time > 0x0A)
			{
				time = 0x05;
				txByte[2] = time;

				#ifdef SystemLogMessage
				DEBUG_WARN_1("Value is out of range.\n");
				#endif
			}
			else
			{
				txByte[2] = time;
			}
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof(rxByte));
				
				if(system_command(Fd, txByte, len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof (rxByte));

					if(tmp[1] == 0x14)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Set Buzzer ok.\n");
						DEBUG_INFO_1("Set Buzzer %d ms.\n",time);
						#endif

					}
					else if(tmp[1] == 0xEC)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Set Buzzer fail.\n");
						#endif
					}
				}
				else
				{}
			}
			else
			{}

			break;
	}
}

//==========================================
// Halt RFID card (EWT)
//==========================================
void sethaltCard(int Fd, int moduleType)
{
	int len = 3;
	unsigned char txByte[len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = 0x02;
			txByte[1] = RFID_CMD_HALT_14443A;
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));

			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof(rxByte));
				
				if(system_command(Fd, txByte, len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof (rxByte));

					if(tmp[1] == 0x28)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Halt card pass.\n");
						#endif
					}
					else if(tmp[1] == 0xD7)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Halt card fail.\n");
						#endif
					}
					else
					{}
				}
				else
				{}
			}
			else
			{}

			break;
	}
}

//==========================================
// Set the RF Output Level
//==========================================
bool setRfOutputLevel(int Fd, int moduleType, int Value)
{
	bool isSuccess = false;
	int len = 4;
	unsigned char txByte[len];
	unsigned char rxByte[254];
	unsigned char tmp[254];

	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = 0x03;
			txByte[1] = RFID_CMD_RF_OUTPUT_LEVEL_SET;
			txByte[2] = Value;
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));
			
			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof(rxByte));
				
				if(system_command(Fd, txByte, len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof (rxByte));
					
					if(tmp[1] == RFID_CMD_RF_OUTPUT_LEVEL_SET)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Set the RF Output Level : Pass...\r\n");
						#endif
						
						if(Value == RF_STRONGEST)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Strongest...\r\n");
							#endif
						}
						else if(Value == RF_STRONGER)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Strong...\r\n");
							#endif
						}	
						else if(Value == RF_WEAK)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Weak...\r\n");
							#endif
						}
						else if(Value == RF_WEAKEST)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Weakest...\r\n");
							#endif
						}
					
						isSuccess = true;
					}
					else if(tmp[1] == 0xFD)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Set the RF Output Level : Fail...\r\n");
						DEBUG_INFO_1("Unknow value !!! \r\n");
						DEBUG_INFO_1("Strongest : SET_RF_STRONGEST...\r\n");
						DEBUG_INFO_1("Strong    : SET_RF_STRONGER...\r\n");
						DEBUG_INFO_1("Weak      : SET_RF_WEAK...\r\n");
						DEBUG_INFO_1("Weakest   : SET_RF_WEAKEST...\r\n");
						#endif
						
						isSuccess = false;
					}
				}
				else
				{}
			}
			else
			{}
			
			break;			
	}
	
	return isSuccess;
}

//==========================================
// Set the Default of Automatic Detecting Card
//==========================================
bool setDefaultOfAutomaticDetectingCard(int Fd, int moduleType, int Value)
{
	bool isSuccess = false;
	int len = 4;
	unsigned char txByte[len];
	unsigned char rxByte[254];
	unsigned char tmp[254];
	
	switch(moduleType)
	{
		case MODULE_EWT:
		default:
			//===============================
			// Command
			//===============================
			txByte[0] = 0x03;
			txByte[1] = RFID_CMD_DEFAULT_AUTO_DETECTING_CARD;
			txByte[2] = Value;
			txByte[ARRAY_SIZE(txByte)-1] = ClaCheckSum(txByte,ARRAY_SIZE(txByte));
	
			if(Fd > 0)
			{
				memset(rxByte, 0, sizeof(rxByte));
				
				if(system_command(Fd, txByte, len, rxByte) > 0)
				{
					memset(tmp, 0, sizeof tmp);
					memcpy(tmp, rxByte, sizeof (rxByte));
					
					if(tmp[1] == RFID_CMD_DEFAULT_AUTO_DETECTING_CARD)
					{
						if(Value == TURN_OFF)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Default of Automatic Detecting Card : OFF...\r\n");
							#endif
						}
						else if (Value == TURN_ON)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Default of Automatic Detecting Card : ON...\r\n");
							#endif
						}
						else if (Value == TURN_TEMPORARILY)
						{
							#ifdef SystemLogMessage
							DEBUG_INFO_1("Default of Automatic Detecting Card : Temporarily open and close automatically detect card...\r\n");
							#endif
						}
						
						isSuccess = true;
					}
					else if(tmp[1] == 0xE2)
					{
						#ifdef SystemLogMessage
						DEBUG_INFO_1("Value : SET_DETECTING_OFF = OFF...\r\n");
						DEBUG_INFO_1("Value : SET_DETECTING_ON = ON...\r\n");
						DEBUG_INFO_1("Value : SET_DETECTING_TEMPORARILY = Temporarily open and close...\r\n"); 
						#endif
						
						isSuccess = false;
					}
				}
				else
				{}
			}
			else
			{}

			break;
	}
	
	return isSuccess;
}