[proxmark3-svn] / client / cmdlfpyramid.c

//-----------------------------------------------------------------------------
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Low frequency Farpoint / Pyramid tag commands
// FSK2a, rf/50, 128 bits (complete)
//-----------------------------------------------------------------------------
#include <string.h>
#include <inttypes.h>
#include <stdio.h>
#include "cmdlfpyramid.h"
#include "proxmark3.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"    // setDemodBuf +
#include "cmdmain.h"
#include "cmdlf.h"
#include "protocols.h"  // for T55xx config register definitions
#include "lfdemod.h"    // parityTest
#include "crc.h"

static int CmdHelp(const char *Cmd);

int usage_lf_pyramid_clone(void){
	PrintAndLog("clone a Farpointe/Pyramid tag to a T55x7 tag.");
	PrintAndLog("The facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated. ");
	PrintAndLog("Currently only works on 26bit");
	PrintAndLog("");
	PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
	PrintAndLog("Options :");
	PrintAndLog("  <Facility-Code> :  8-bit value facility code");
	PrintAndLog("  <Card Number>   : 16-bit value card number");
	PrintAndLog("  Q5              : optional - clone to Q5 (T5555) instead of T55x7 chip");
	PrintAndLog("");
	PrintAndLog("Sample  : lf pyramid clone 123 11223");
	return 0;
}

int usage_lf_pyramid_sim(void) {
	PrintAndLog("Enables simulation of Farpointe/Pyramid card with specified card number.");
	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	PrintAndLog("The facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
	PrintAndLog("Currently work only on 26bit");
	PrintAndLog("");
	PrintAndLog("Usage:  lf pyramid sim <Card-Number>");
	PrintAndLog("Options :");
	PrintAndLog("  <Facility-Code> :  8-bit value facility code");
	PrintAndLog("  <Card Number>   : 16-bit value card number");
	PrintAndLog("");
	PrintAndLog("Sample  : lf pyramid sim 123 11223");
	return 0;
}

// Works for 26bits.
int GetPyramidBits(uint32_t fc, uint32_t cn, uint8_t *pyramidBits) {

	uint8_t pre[128];
	memset(pre, 0x00, sizeof(pre));

	// format start bit
	pre[79] = 1;
	
	// Get 26 wiegand from FacilityCode, CardNumber	
	uint8_t wiegand[24];
	memset(wiegand, 0x00, sizeof(wiegand));
	num_to_bytebits(fc, 8, wiegand);
	num_to_bytebits(cn, 16, wiegand+8);

	// add wiegand parity bits (dest, source, len)
	wiegand_add_parity(pre+80, wiegand, 24);
	
	// add paritybits	(bitsource, dest, sourcelen, paritylen, parityType (odd, even,)
	addParity(pre+8, pyramidBits+8, 102, 8, 1);

	// add checksum		
	uint8_t csBuff[13];
	for (uint8_t i = 0; i < 13; i++)
		csBuff[i] = bytebits_to_byte(pyramidBits + 16 + (i*8), 8);

	uint32_t crc = CRC8Maxim(csBuff, 13);
	num_to_bytebits(crc, 8, pyramidBits+120);
	return 1;
}

//by marshmellow
//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001  (always a 128 bit data stream)
//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
int CmdFSKdemodPyramid(const char *Cmd)
{
	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
	size_t size = getFromGraphBuf(BitStream);
	if (size==0) return 0;

	//get binary from fsk wave
	int idx = PyramiddemodFSK(BitStream, &size);
	if (idx < 0){
		if (g_debugMode){
			if (idx == -5)
				PrintAndLog("DEBUG: Error - not enough samples");
			else if (idx == -1)
				PrintAndLog("DEBUG: Error - only noise found");
			else if (idx == -2)
				PrintAndLog("DEBUG: Error - problem during FSK demod");
			else if (idx == -3)
				PrintAndLog("DEBUG: Error - Size not correct: %d", size);
			else if (idx == -4)
				PrintAndLog("DEBUG: Error - Pyramid preamble not found");
			else
				PrintAndLog("DEBUG: Error - idx: %d",idx);
		}
		return 0;
	}
	// Index map
	// 0           10          20          30            40          50          60
	// |           |           |           |             |           |           |
	// 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
	// -----------------------------------------------------------------------------
	// 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
	// premable  xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o

	// 64    70            80          90          100         110           120
	// |     |             |           |           |           |             |
	// 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
	// -----------------------------------------------------------------------------
	// 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
	// xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
	//                                  |---115---||---------71---------|
	// s = format start bit, o = odd parity of last 7 bits
	// f = facility code, c = card number
	// w = wiegand parity, x = extra space for other formats
	// p = unknown checksum
	// (26 bit format shown)

	//get bytes for checksum calc
	uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
	uint8_t csBuff[14] = {0x00};
	for (uint8_t i = 0; i < 13; i++){
		csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
	}
	//check checksum calc
	//checksum calc thanks to ICEMAN!!
	uint32_t checkCS =  CRC8Maxim(csBuff,13);

	//get raw ID before removing parities
	uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
	uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
	uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
	setDemodBuf(BitStream,128,idx);
	setClockGrid(g_DemodClock, g_DemodStartIdx + (idx*g_DemodClock));

	size = removeParity(BitStream, idx+8, 8, 1, 120);
	if (size != 105){
		if (g_debugMode) 
			PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
		return 0;
	}

	// ok valid card found!

	// Index map
	// 0         10        20        30        40        50        60        70
	// |         |         |         |         |         |         |         |
	// 01234567890123456789012345678901234567890123456789012345678901234567890
	// -----------------------------------------------------------------------
	// 00000000000000000000000000000000000000000000000000000000000000000000000
	// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

	// 71         80         90          100
	// |          |          |           |
	// 1 2 34567890 1234567890123456 7 8901234
	// ---------------------------------------
	// 1 1 01110011 0000000001000110 0 1001010
	// s w ffffffff cccccccccccccccc w ppppppp
	//     |--115-| |------71------|
	// s = format start bit, o = odd parity of last 7 bits
	// f = facility code, c = card number
	// w = wiegand parity, x = extra space for other formats
	// p = unknown checksum
	// (26 bit format shown)

	//find start bit to get fmtLen
	int j;
	for (j=0; j<size; j++){
		if(BitStream[j]) break;
	}
	uint8_t fmtLen = size-j-8;
	uint32_t fc = 0;
	uint32_t cardnum = 0;
	uint32_t code1 = 0;
	if (fmtLen==26){
		fc = bytebits_to_byte(BitStream+73, 8);
		cardnum = bytebits_to_byte(BitStream+81, 16);
		code1 = bytebits_to_byte(BitStream+72,fmtLen);
		PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
	} else if (fmtLen==45){
		fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
		fc = bytebits_to_byte(BitStream+53, 10);
		cardnum = bytebits_to_byte(BitStream+63, 32);
		PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
	} else {
		cardnum = bytebits_to_byte(BitStream+81, 16);
		if (fmtLen>32){
			//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
			//code2 = bytebits_to_byte(BitStream+(size-32),32);
			PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
		} else{
			//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
			PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
		}
	}
	if (checksum == checkCS)
		PrintAndLog("Checksum %02x passed", checksum);
	else
		PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);

	if (g_debugMode){
		PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
		printDemodBuff();
	}
	return 1;
}

int CmdPyramidRead(const char *Cmd) {
	lf_read(true, 15000);
	return CmdFSKdemodPyramid("");
}

int CmdPyramidClone(const char *Cmd) {

	char cmdp = param_getchar(Cmd, 0);
	if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_pyramid_clone();

	uint32_t facilitycode=0, cardnumber=0, fc = 0, cn = 0;
	uint32_t blocks[5];
	uint8_t i;
	uint8_t bs[128];
	memset(bs, 0x00, sizeof(bs));

	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_pyramid_clone();

	facilitycode = (fc & 0x000000FF);
	cardnumber = (cn & 0x0000FFFF);
	
	if ( !GetPyramidBits(facilitycode, cardnumber, bs)) {
		PrintAndLog("Error with tag bitstream generation.");
		return 1;
	}

	//Pyramid - compat mode, FSK2a, data rate 50, 4 data blocks
	blocks[0] = T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 4<<T55x7_MAXBLOCK_SHIFT;

	if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
		blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT;

	blocks[1] = bytebits_to_byte(bs,32);
	blocks[2] = bytebits_to_byte(bs+32,32);
	blocks[3] = bytebits_to_byte(bs+64,32);
	blocks[4] = bytebits_to_byte(bs+96,32);

	PrintAndLog("Preparing to clone Farpointe/Pyramid to T55x7 with Facility Code: %u, Card Number: %u", facilitycode, cardnumber);
	PrintAndLog("Blk | Data ");
	PrintAndLog("----+------------");
	for ( i = 0; i<5; ++i )
		PrintAndLog(" %02d | %08" PRIx32, i, blocks[i]);

	UsbCommand resp;
	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};

	for ( i = 0; i<5; ++i ) {
		c.arg[0] = blocks[i];
		c.arg[1] = i;
		clearCommandBuffer();
		SendCommand(&c);
		if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
			PrintAndLog("Error occurred, device did not respond during write operation.");
			return -1;
		}
	}
	return 0;
}

int CmdPyramidSim(const char *Cmd) {

	char cmdp = param_getchar(Cmd, 0);
	if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_pyramid_sim();

	uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0;

	uint8_t bs[128];
	size_t size = sizeof(bs);
	memset(bs, 0x00, size);

	// Pyramid uses:  fcHigh: 10, fcLow: 8, clk: 50, invert: 0
	uint64_t arg1, arg2;
	arg1 = (10 << 8) + 8;
	arg2 = 50 | 0;

	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_pyramid_sim();

	facilitycode = (fc & 0x000000FF);
	cardnumber = (cn & 0x0000FFFF);

	if ( !GetPyramidBits(facilitycode, cardnumber, bs)) {
		PrintAndLog("Error with tag bitstream generation.");
		return 1;
	}

	PrintAndLog("Simulating Farpointe/Pyramid - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber );

	UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
	memcpy(c.d.asBytes, bs, size);
	clearCommandBuffer();
	SendCommand(&c);
	return 0;
}

static command_t CommandTable[] = {
	{"help",  CmdHelp,            1, "This help"},
	{"demod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from the GraphBuffer"},
	{"read",  CmdPyramidRead,     0, "Attempt to read and extract tag data"},
	{"clone", CmdPyramidClone,    0, "<Facility-Code> <Card Number>  clone pyramid tag"},
	{"sim",   CmdPyramidSim,      0, "<Facility-Code> <Card Number>  simulate pyramid tag"},
	{NULL, NULL, 0, NULL}
};

int CmdLFPyramid(const char *Cmd) {
	clearCommandBuffer();
	CmdsParse(CommandTable, Cmd);
	return 0;
}

int CmdHelp(const char *Cmd) {
	CmdsHelp(CommandTable);
	return 0;
}
Commit	Line	Data
6923d3f1	1	//-----------------------------------------------------------------------------
	2	//
	3	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	4	// at your option, any later version. See the LICENSE.txt file for the text of
	5	// the license.
	6	//-----------------------------------------------------------------------------
	7	// Low frequency Farpoint / Pyramid tag commands
b9957414	8	// FSK2a, rf/50, 128 bits (complete)
6923d3f1	9	//-----------------------------------------------------------------------------
	10	#include <string.h>
	11	#include <inttypes.h>
acf0582d	12	#include <stdio.h>
2b4898ec	13	#include "cmdlfpyramid.h"
29ada8fc	14	#include "proxmark3.h"
	15	#include "ui.h"
	16	#include "util.h"
	17	#include "graph.h"
	18	#include "cmdparser.h"
cf4640b9	19	#include "cmddata.h" // setDemodBuf +
29ada8fc	20	#include "cmdmain.h"
	21	#include "cmdlf.h"
	22	#include "protocols.h" // for T55xx config register definitions
	23	#include "lfdemod.h" // parityTest
	24	#include "crc.h"
	25
6923d3f1	26	static int CmdHelp(const char *Cmd);
	27
	28	int usage_lf_pyramid_clone(void){
	29	PrintAndLog("clone a Farpointe/Pyramid tag to a T55x7 tag.");
	30	PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated. ");
cf4640b9	31	PrintAndLog("Currently only works on 26bit");
6923d3f1	32	PrintAndLog("");
	33	PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
	34	PrintAndLog("Options :");
	35	PrintAndLog(" <Facility-Code> : 8-bit value facility code");
	36	PrintAndLog(" <Card Number> : 16-bit value card number");
29ada8fc	37	PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
6923d3f1	38	PrintAndLog("");
	39	PrintAndLog("Sample : lf pyramid clone 123 11223");
	40	return 0;
	41	}
	42
	43	int usage_lf_pyramid_sim(void) {
	44	PrintAndLog("Enables simulation of Farpointe/Pyramid card with specified card number.");
	45	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	46	PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
	47	PrintAndLog("Currently work only on 26bit");
	48	PrintAndLog("");
	49	PrintAndLog("Usage: lf pyramid sim <Card-Number>");
	50	PrintAndLog("Options :");
	51	PrintAndLog(" <Facility-Code> : 8-bit value facility code");
	52	PrintAndLog(" <Card Number> : 16-bit value card number");
	53	PrintAndLog("");
	54	PrintAndLog("Sample : lf pyramid sim 123 11223");
	55	return 0;
	56	}
	57
	58	// Works for 26bits.
	59	int GetPyramidBits(uint32_t fc, uint32_t cn, uint8_t *pyramidBits) {
	60
	61	uint8_t pre[128];
	62	memset(pre, 0x00, sizeof(pre));
	63
	64	// format start bit
	65	pre[79] = 1;
	66
	67	// Get 26 wiegand from FacilityCode, CardNumber
	68	uint8_t wiegand[24];
	69	memset(wiegand, 0x00, sizeof(wiegand));
	70	num_to_bytebits(fc, 8, wiegand);
	71	num_to_bytebits(cn, 16, wiegand+8);
	72
	73	// add wiegand parity bits (dest, source, len)
	74	wiegand_add_parity(pre+80, wiegand, 24);
	75
	76	// add paritybits (bitsource, dest, sourcelen, paritylen, parityType (odd, even,)
	77	addParity(pre+8, pyramidBits+8, 102, 8, 1);
	78
	79	// add checksum
	80	uint8_t csBuff[13];
	81	for (uint8_t i = 0; i < 13; i++)
	82	csBuff[i] = bytebits_to_byte(pyramidBits + 16 + (i*8), 8);
	83
	84	uint32_t crc = CRC8Maxim(csBuff, 13);
	85	num_to_bytebits(crc, 8, pyramidBits+120);
	86	return 1;
	87	}
	88
cf4640b9	89	//by marshmellow
	90	//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
	91	//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
	92	int CmdFSKdemodPyramid(const char *Cmd)
	93	{
	94	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
	95	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
	96	size_t size = getFromGraphBuf(BitStream);
	97	if (size==0) return 0;
	98
	99	//get binary from fsk wave
	100	int idx = PyramiddemodFSK(BitStream, &size);
	101	if (idx < 0){
	102	if (g_debugMode){
	103	if (idx == -5)
	104	PrintAndLog("DEBUG: Error - not enough samples");
	105	else if (idx == -1)
	106	PrintAndLog("DEBUG: Error - only noise found");
	107	else if (idx == -2)
	108	PrintAndLog("DEBUG: Error - problem during FSK demod");
	109	else if (idx == -3)
	110	PrintAndLog("DEBUG: Error - Size not correct: %d", size);
	111	else if (idx == -4)
	112	PrintAndLog("DEBUG: Error - Pyramid preamble not found");
	113	else
	114	PrintAndLog("DEBUG: Error - idx: %d",idx);
	115	}
	116	return 0;
	117	}
	118	// Index map
	119	// 0 10 20 30 40 50 60
	120	// \| \| \| \| \| \| \|
	121	// 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
	122	// -----------------------------------------------------------------------------
	123	// 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
	124	// premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
	125
	126	// 64 70 80 90 100 110 120
	127	// \| \| \| \| \| \| \|
	128	// 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
	129	// -----------------------------------------------------------------------------
	130	// 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
	131	// xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
	132	// \|---115---\|\|---------71---------\|
	133	// s = format start bit, o = odd parity of last 7 bits
	134	// f = facility code, c = card number
	135	// w = wiegand parity, x = extra space for other formats
	136	// p = unknown checksum
	137	// (26 bit format shown)
	138
	139	//get bytes for checksum calc
	140	uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
	141	uint8_t csBuff[14] = {0x00};
	142	for (uint8_t i = 0; i < 13; i++){
	143	csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
	144	}
	145	//check checksum calc
	146	//checksum calc thanks to ICEMAN!!
	147	uint32_t checkCS = CRC8Maxim(csBuff,13);
	148
	149	//get raw ID before removing parities
	150	uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
	151	uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
	152	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
153	uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
154	setDemodBuf(BitStream,128,idx);
9fe4507c	155	setClockGrid(g_DemodClock, g_DemodStartIdx + (idx*g_DemodClock));
cf4640b9	156
	157	size = removeParity(BitStream, idx+8, 8, 1, 120);
	158	if (size != 105){
	159	if (g_debugMode)
	160	PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
	161	return 0;
	162	}
	163
	164	// ok valid card found!
	165
	166	// Index map
	167	// 0 10 20 30 40 50 60 70
	168	// \| \| \| \| \| \| \| \|
	169	// 01234567890123456789012345678901234567890123456789012345678901234567890
	170	// -----------------------------------------------------------------------
	171	// 00000000000000000000000000000000000000000000000000000000000000000000000
	172	// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
	173
	174	// 71 80 90 100
	175	// \| \| \| \|
	176	// 1 2 34567890 1234567890123456 7 8901234
	177	// ---------------------------------------
	178	// 1 1 01110011 0000000001000110 0 1001010
	179	// s w ffffffff cccccccccccccccc w ppppppp
	180	// \|--115-\| \|------71------\|
	181	// s = format start bit, o = odd parity of last 7 bits
	182	// f = facility code, c = card number
	183	// w = wiegand parity, x = extra space for other formats
	184	// p = unknown checksum
	185	// (26 bit format shown)
	186
	187	//find start bit to get fmtLen
	188	int j;
	189	for (j=0; j<size; j++){
	190	if(BitStream[j]) break;
	191	}
	192	uint8_t fmtLen = size-j-8;
	193	uint32_t fc = 0;
	194	uint32_t cardnum = 0;
	195	uint32_t code1 = 0;
	196	if (fmtLen==26){
	197	fc = bytebits_to_byte(BitStream+73, 8);
	198	cardnum = bytebits_to_byte(BitStream+81, 16);
	199	code1 = bytebits_to_byte(BitStream+72,fmtLen);
	200	PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
	201	} else if (fmtLen==45){
	202	fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
	203	fc = bytebits_to_byte(BitStream+53, 10);
	204	cardnum = bytebits_to_byte(BitStream+63, 32);
	205	PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
	206	} else {
	207	cardnum = bytebits_to_byte(BitStream+81, 16);
	208	if (fmtLen>32){
	209	//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
	210	//code2 = bytebits_to_byte(BitStream+(size-32),32);
	211	PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
	212	} else{
	213	//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
	214	PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
	215	}
	216	}
	217	if (checksum == checkCS)
	218	PrintAndLog("Checksum %02x passed", checksum);
	219	else
220	PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
221
222	if (g_debugMode){
223	PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
224	printDemodBuff();
225	}
226	return 1;
227	}
228
6923d3f1	229	int CmdPyramidRead(const char *Cmd) {
b9957414	230	lf_read(true, 15000);
6923d3f1	231	return CmdFSKdemodPyramid("");
	232	}
	233
	234	int CmdPyramidClone(const char *Cmd) {
	235
	236	char cmdp = param_getchar(Cmd, 0);
	237	if (strlen(Cmd) == 0 \|\| cmdp == 'h' \|\| cmdp == 'H') return usage_lf_pyramid_clone();
	238
	239	uint32_t facilitycode=0, cardnumber=0, fc = 0, cn = 0;
	240	uint32_t blocks[5];
	241	uint8_t i;
	242	uint8_t bs[128];
	243	memset(bs, 0x00, sizeof(bs));
	244
	245	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_pyramid_clone();
	246
	247	facilitycode = (fc & 0x000000FF);
	248	cardnumber = (cn & 0x0000FFFF);
	249
	250	if ( !GetPyramidBits(facilitycode, cardnumber, bs)) {
	251	PrintAndLog("Error with tag bitstream generation.");
	252	return 1;
29ada8fc	253	}
6923d3f1	254
	255	//Pyramid - compat mode, FSK2a, data rate 50, 4 data blocks
	256	blocks[0] = T55x7_MODULATION_FSK2a \| T55x7_BITRATE_RF_50 \| 4<<T55x7_MAXBLOCK_SHIFT;
29ada8fc	257
	258	if (param_getchar(Cmd, 3) == 'Q' \|\| param_getchar(Cmd, 3) == 'q')
	259	blocks[0] = T5555_MODULATION_FSK2 \| T5555_INVERT_OUTPUT \| 50<<T5555_BITRATE_SHIFT \| 4<<T5555_MAXBLOCK_SHIFT;
	260
6923d3f1	261	blocks[1] = bytebits_to_byte(bs,32);
	262	blocks[2] = bytebits_to_byte(bs+32,32);
	263	blocks[3] = bytebits_to_byte(bs+64,32);
	264	blocks[4] = bytebits_to_byte(bs+96,32);
	265
	266	PrintAndLog("Preparing to clone Farpointe/Pyramid to T55x7 with Facility Code: %u, Card Number: %u", facilitycode, cardnumber);
	267	PrintAndLog("Blk \| Data ");
	268	PrintAndLog("----+------------");
	269	for ( i = 0; i<5; ++i )
	270	PrintAndLog(" %02d \| %08" PRIx32, i, blocks[i]);
	271
	272	UsbCommand resp;
	273	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
	274
	275	for ( i = 0; i<5; ++i ) {
	276	c.arg[0] = blocks[i];
	277	c.arg[1] = i;
	278	clearCommandBuffer();
	279	SendCommand(&c);
	280	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
	281	PrintAndLog("Error occurred, device did not respond during write operation.");
	282	return -1;
	283	}
	284	}
29ada8fc	285	return 0;
6923d3f1	286	}
	287
	288	int CmdPyramidSim(const char *Cmd) {
	289
	290	char cmdp = param_getchar(Cmd, 0);
	291	if (strlen(Cmd) == 0 \|\| cmdp == 'h' \|\| cmdp == 'H') return usage_lf_pyramid_sim();
	292
	293	uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0;
29ada8fc	294
6923d3f1	295	uint8_t bs[128];
	296	size_t size = sizeof(bs);
	297	memset(bs, 0x00, size);
29ada8fc	298
6923d3f1	299	// Pyramid uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
	300	uint64_t arg1, arg2;
	301	arg1 = (10 << 8) + 8;
	302	arg2 = 50 \| 0;
	303
	304	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_pyramid_sim();
	305
	306	facilitycode = (fc & 0x000000FF);
	307	cardnumber = (cn & 0x0000FFFF);
29ada8fc	308
6923d3f1	309	if ( !GetPyramidBits(facilitycode, cardnumber, bs)) {
	310	PrintAndLog("Error with tag bitstream generation.");
	311	return 1;
29ada8fc	312	}
6923d3f1	313
6923d3f1	314	PrintAndLog("Simulating Farpointe/Pyramid - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber );
29ada8fc	315
6923d3f1	316	UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
	317	memcpy(c.d.asBytes, bs, size);
	318	clearCommandBuffer();
	319	SendCommand(&c);
	320	return 0;
	321	}
	322
	323	static command_t CommandTable[] = {
cf4640b9	324	{"help", CmdHelp, 1, "This help"},
	325	{"demod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from the GraphBuffer"},
	326	{"read", CmdPyramidRead, 0, "Attempt to read and extract tag data"},
	327	{"clone", CmdPyramidClone, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
	328	{"sim", CmdPyramidSim, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
29ada8fc	329	{NULL, NULL, 0, NULL}
6923d3f1	330	};
	331
	332	int CmdLFPyramid(const char *Cmd) {
	333	clearCommandBuffer();
29ada8fc	334	CmdsParse(CommandTable, Cmd);
29ada8fc	335	return 0;
6923d3f1	336	}
	337
	338	int CmdHelp(const char *Cmd) {
29ada8fc	339	CmdsHelp(CommandTable);
29ada8fc	340	return 0;
6923d3f1	341	}