[proxmark3-svn] / client / cmdlfawid.c

//-----------------------------------------------------------------------------
// Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
//
// cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// 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 AWID26 commands
//-----------------------------------------------------------------------------

#include <string.h>
#include <stdio.h>      // sscanf
#include "proxmark3.h"  // Definitions, USB controls, etc
#include "ui.h"         // PrintAndLog
#include "cmdparser.h"  // CmdsParse, CmdsHelp
#include "lfdemod.h"    // parityTest +
#include "util.h"       // weigandparity
#include "protocols.h"  // for T55xx config register definitions
#include "cmddata.h"    // for printDemod and demodbuffer commands
#include "graph.h"      // for getFromGraphBuff cmds
#include "cmdmain.h"

static int CmdHelp(const char *Cmd);

int usage_lf_awid_read(void) {
	PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags.");
	PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
	PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card.");
	PrintAndLog("");
	PrintAndLog("Usage:  lf awid read ['1']");
	PrintAndLog("Options : ");
	PrintAndLog("  1 : (optional) stop after reading a single card");
	PrintAndLog("");
	PrintAndLog("Samples : lf awid read");
	PrintAndLog("        : lf awid read 1");
	return 0;
}

int usage_lf_awid_sim(void) {
	PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number.");
	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
	PrintAndLog("");
	PrintAndLog("Usage:  lf awid sim <Facility-Code> <Card-Number>");
	PrintAndLog("Options : ");
	PrintAndLog("  <Facility-Code> : 8-bit value representing the AWID facility code");
	PrintAndLog("  <Card Number>   : 16-bit value representing the AWID card number");
	PrintAndLog("");
	PrintAndLog("Sample : lf awid sim 224 1337");
	return 0;
}

int usage_lf_awid_clone(void) {
	PrintAndLog("Enables cloning of AWID26 card with specified facility-code and card number onto T55x7.");
	PrintAndLog("The T55x7 must be on the antenna when issuing this command.  T55x7 blocks are calculated and printed in the process.");
	PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
	PrintAndLog("");
	PrintAndLog("Usage:  lf awid clone <Facility-Code> <Card-Number>");
	PrintAndLog("Options : ");
	PrintAndLog("  <Facility-Code> : 8-bit value representing the AWID facility code");
	PrintAndLog("  <Card Number>   : 16-bit value representing the AWID card number");
	PrintAndLog("  Q5              : optional - clone to Q5 (T5555) instead of T55x7 chip");
	PrintAndLog("");
	PrintAndLog("Sample  : lf awid clone 224 1337");
	return 0;
}

int CmdAWIDReadFSK(const char *Cmd) {
	int findone=0;
	if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_read();
	if (Cmd[0] == '1') findone = 1;

	UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
	clearCommandBuffer();
	SendCommand(&c);
	return 0;   
}
//by marshmellow
//AWID Prox demod - FSK RF/50 with preamble of 00000001  (always a 96 bit data stream)
//print full AWID Prox ID and some bit format details if found
int CmdFSKdemodAWID(const char *Cmd)
{
	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 = AWIDdemodFSK(BitStream, &size);
	if (idx<=0){
		if (g_debugMode){
			if (idx == -1)
				PrintAndLog("DEBUG: Error - not enough samples");
			else if (idx == -2)
				PrintAndLog("DEBUG: Error - only noise found");
			else if (idx == -3)
				PrintAndLog("DEBUG: Error - problem during FSK demod");
			else if (idx == -4)
				PrintAndLog("DEBUG: Error - AWID preamble not found");
			else if (idx == -5)
				PrintAndLog("DEBUG: Error - Size not correct: %d", size);
			else
				PrintAndLog("DEBUG: Error %d",idx);
		}
		return 0;
	}

	// Index map
	// 0            10            20            30              40            50              60
	// |            |             |             |               |             |               |
	// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
	// -----------------------------------------------------------------------------
	// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
	// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
	//          |---26 bit---|    |-----117----||-------------142-------------|
	// b = format bit len, o = odd parity of last 3 bits
	// f = facility code, c = card number
	// w = wiegand parity
	// (26 bit format shown)
 
	//get raw ID before removing parities
	uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
	uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
	setDemodBuf(BitStream,96,idx);

	size = removeParity(BitStream, idx+8, 4, 1, 88);
	if (size != 66){
		if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
		return 0;
	}
	// ok valid card found!

	// Index map
	// 0           10         20        30          40        50        60
	// |           |          |         |           |         |         |
	// 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
	// -----------------------------------------------------------------------------
	// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
	// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
	// |26 bit|   |-117--| |-----142------|
	// b = format bit len, o = odd parity of last 3 bits
	// f = facility code, c = card number
	// w = wiegand parity
	// (26 bit format shown)

	uint32_t fc = 0;
	uint32_t cardnum = 0;
	uint32_t code1 = 0;
	uint32_t code2 = 0;
	uint8_t fmtLen = bytebits_to_byte(BitStream,8);
	if (fmtLen==26){
		fc = bytebits_to_byte(BitStream+9, 8);
		cardnum = bytebits_to_byte(BitStream+17, 16);
		code1 = bytebits_to_byte(BitStream+8,fmtLen);
		PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
	} else {
		cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
		if (fmtLen>32){
			code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
			code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
			PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
		} else{
			code1 = bytebits_to_byte(BitStream+8,fmtLen);
			PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
		}
	}
	if (g_debugMode){
		PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
		printDemodBuff();
	}
	//todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
	return 1;
}

//refactored by marshmellow
int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t	*AWIDBits) {
	uint8_t pre[66];
	memset(pre, 0, sizeof(pre));
	AWIDBits[7]=1;
	num_to_bytebits(26, 8, pre);

	uint8_t wiegand[24];
	num_to_bytebits(fc, 8, wiegand);
	num_to_bytebits(cn, 16, wiegand+8);

	wiegand_add_parity(pre+8, wiegand, 24);

	size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
	if (bitLen != 88) return 0;
	//for (uint8_t i = 0; i<3; i++){
	//	PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
	//}
	return 1;
}

int CmdAWIDSim(const char *Cmd) {
	uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
	uint8_t BitStream[96];
	uint8_t *bs = BitStream;
	size_t size = sizeof(BitStream);
	memset(bs, 0, size);

	uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
	uint64_t arg2 = 50; // clk RF/50 invert=0
	
	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();

	fcode = (fc & 0x000000FF);
	cnum = (cn & 0x0000FFFF);

	if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
	if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);

	PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
	PrintAndLog("Press pm3-button to abort simulation or run another command");

	if (!getAWIDBits(fc, cn, bs)) {
		PrintAndLog("Error with tag bitstream generation.");
		return 1;
	}
	// AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
	UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
	memcpy(c.d.asBytes, bs, size);
	clearCommandBuffer();
	SendCommand(&c);
	return 0;
}

int CmdAWIDClone(const char *Cmd) {
	uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
	uint32_t fc=0,cn=0;
	uint8_t BitStream[96];
	uint8_t *bs=BitStream;
	memset(bs,0,sizeof(BitStream));

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

	if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
		blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | ((50-2)>>1)<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;

	if ((fc & 0xFF) != fc) {
		fc &= 0xFF;
		PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
	}
	if ((cn & 0xFFFF) != cn) {
		cn &= 0xFFFF;
		PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
	}

	if ( !getAWIDBits(fc, cn, bs)) {
		PrintAndLog("Error with tag bitstream generation.");
		return 1;
	}

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

	PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u", 
	    fc, cn);
	PrintAndLog("Blk | Data ");
	PrintAndLog("----+------------");
	PrintAndLog(" 00 | 0x%08x", blocks[0]);
	PrintAndLog(" 01 | 0x%08x", blocks[1]);
	PrintAndLog(" 02 | 0x%08x", blocks[2]);
	PrintAndLog(" 03 | 0x%08x", blocks[3]);

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

	for (uint8_t i=0; i<4; i++) {
		c.cmd = CMD_T55XX_WRITE_BLOCK;
		c.arg[0] = blocks[i];
		c.arg[1] = i;
		c.arg[2] = 0;
		clearCommandBuffer();
		SendCommand(&c);
		if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
			PrintAndLog("Error occurred, device did not respond during write operation.");
			return -1;
		}

	}
	return 0;
}

static command_t CommandTable[] = {
	{"help",      CmdHelp,         1, "This help"},
	{"demod",     CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from the GraphBuffer"},
	{"read",      CmdAWIDReadFSK,  0, "['1'] Realtime AWID FSK read from the antenna (option '1' for one tag only)"},
	{"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
	{"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
	{NULL, NULL, 0, NULL}
};

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

int CmdHelp(const char *Cmd) {
	CmdsHelp(CommandTable);
	return 0;
}
Commit	Line	Data
dbf6e824 CY	1	//-----------------------------------------------------------------------------
	2	// Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
	3	//
	4	// cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
	5	//
	6	// This code is licensed to you under the terms of the GNU GPL, version 2 or,
	7	// at your option, any later version. See the LICENSE.txt file for the text of
	8	// the license.
	9	//-----------------------------------------------------------------------------
	10	// Low frequency AWID26 commands
	11	//-----------------------------------------------------------------------------
	12
acf0582d	13	#include <string.h>
dbf6e824 CY	14	#include <stdio.h> // sscanf
	15	#include "proxmark3.h" // Definitions, USB controls, etc
	16	#include "ui.h" // PrintAndLog
	17	#include "cmdparser.h" // CmdsParse, CmdsHelp
6cd2eef4	18	#include "lfdemod.h" // parityTest +
709665b5	19	#include "util.h" // weigandparity
709665b5	20	#include "protocols.h" // for T55xx config register definitions
6cd2eef4	21	#include "cmddata.h" // for printDemod and demodbuffer commands
6cd2eef4	22	#include "graph.h" // for getFromGraphBuff cmds
976627d5	23	#include "cmdmain.h"
dbf6e824	24
709665b5	25	static int CmdHelp(const char *Cmd);
bcffcca2	26
6cd2eef4	27	int usage_lf_awid_read(void) {
37824afe MHS	28	PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags.");
	29	PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
	30	PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card.");
	31	PrintAndLog("");
6cd2eef4	32	PrintAndLog("Usage: lf awid read ['1']");
709665b5	33	PrintAndLog("Options : ");
37824afe MHS	34	PrintAndLog(" 1 : (optional) stop after reading a single card");
37824afe MHS	35	PrintAndLog("");
6cd2eef4	36	PrintAndLog("Samples : lf awid read");
6cd2eef4	37	PrintAndLog(" : lf awid read 1");
37824afe	38	return 0;
bcffcca2 CY	39	}
	40
	41	int usage_lf_awid_sim(void) {
37824afe MHS	42	PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number.");
	43	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	44	PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
	45	PrintAndLog("");
	46	PrintAndLog("Usage: lf awid sim <Facility-Code> <Card-Number>");
709665b5	47	PrintAndLog("Options : ");
37824afe MHS	48	PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
	49	PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
	50	PrintAndLog("");
709665b5	51	PrintAndLog("Sample : lf awid sim 224 1337");
37824afe	52	return 0;
bcffcca2 CY	53	}
	54
	55	int usage_lf_awid_clone(void) {
37824afe MHS	56	PrintAndLog("Enables cloning of AWID26 card with specified facility-code and card number onto T55x7.");
	57	PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process.");
	58	PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
	59	PrintAndLog("");
	60	PrintAndLog("Usage: lf awid clone <Facility-Code> <Card-Number>");
709665b5	61	PrintAndLog("Options : ");
37824afe MHS	62	PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
37824afe MHS	63	PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
709665b5	64	PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
37824afe	65	PrintAndLog("");
709665b5	66	PrintAndLog("Sample : lf awid clone 224 1337");
37824afe	67	return 0;
bcffcca2 CY	68	}
bcffcca2 CY	69
6cd2eef4	70	int CmdAWIDReadFSK(const char *Cmd) {
37824afe	71	int findone=0;
6cd2eef4	72	if (Cmd[0] == 'h' \|\| Cmd[0] == 'H') return usage_lf_awid_read();
709665b5	73	if (Cmd[0] == '1') findone = 1;
	74
	75	UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
	76	clearCommandBuffer();
37824afe MHS	77	SendCommand(&c);
37824afe MHS	78	return 0;
dbf6e824	79	}
6cd2eef4	80	//by marshmellow
	81	//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
	82	//print full AWID Prox ID and some bit format details if found
	83	int CmdFSKdemodAWID(const char *Cmd)
	84	{
	85	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
	86	size_t size = getFromGraphBuf(BitStream);
	87	if (size==0) return 0;
	88
	89	//get binary from fsk wave
	90	int idx = AWIDdemodFSK(BitStream, &size);
	91	if (idx<=0){
	92	if (g_debugMode){
	93	if (idx == -1)
	94	PrintAndLog("DEBUG: Error - not enough samples");
	95	else if (idx == -2)
	96	PrintAndLog("DEBUG: Error - only noise found");
	97	else if (idx == -3)
	98	PrintAndLog("DEBUG: Error - problem during FSK demod");
	99	else if (idx == -4)
	100	PrintAndLog("DEBUG: Error - AWID preamble not found");
	101	else if (idx == -5)
	102	PrintAndLog("DEBUG: Error - Size not correct: %d", size);
	103	else
	104	PrintAndLog("DEBUG: Error %d",idx);
	105	}
	106	return 0;
	107	}
	108
	109	// Index map
	110	// 0 10 20 30 40 50 60
	111	// \| \| \| \| \| \| \|
	112	// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
	113	// -----------------------------------------------------------------------------
	114	// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
	115	// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
	116	// \|---26 bit---\| \|-----117----\|\|-------------142-------------\|
	117	// b = format bit len, o = odd parity of last 3 bits
	118	// f = facility code, c = card number
	119	// w = wiegand parity
	120	// (26 bit format shown)
	121
	122	//get raw ID before removing parities
	123	uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
	124	uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
	125	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
	126	setDemodBuf(BitStream,96,idx);
	127
	128	size = removeParity(BitStream, idx+8, 4, 1, 88);
	129	if (size != 66){
	130	if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
	131	return 0;
	132	}
	133	// ok valid card found!
	134
	135	// Index map
	136	// 0 10 20 30 40 50 60
	137	// \| \| \| \| \| \| \|
	138	// 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
	139	// -----------------------------------------------------------------------------
	140	// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
	141	// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
	142	// \|26 bit\| \|-117--\| \|-----142------\|
	143	// b = format bit len, o = odd parity of last 3 bits
144	// f = facility code, c = card number
145	// w = wiegand parity
146	// (26 bit format shown)
147
148	uint32_t fc = 0;
149	uint32_t cardnum = 0;
150	uint32_t code1 = 0;
151	uint32_t code2 = 0;
152	uint8_t fmtLen = bytebits_to_byte(BitStream,8);
153	if (fmtLen==26){
154	fc = bytebits_to_byte(BitStream+9, 8);
155	cardnum = bytebits_to_byte(BitStream+17, 16);
156	code1 = bytebits_to_byte(BitStream+8,fmtLen);
157	PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
158	} else {
159	cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
160	if (fmtLen>32){
161	code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
162	code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
163	PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
164	} else{
165	code1 = bytebits_to_byte(BitStream+8,fmtLen);
166	PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
167	}
168	}
169	if (g_debugMode){
170	PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
171	printDemodBuff();
172	}
173	//todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
174	return 1;
175	}
dbf6e824	176
709665b5	177	//refactored by marshmellow
	178	int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) {
	179	uint8_t pre[66];
	180	memset(pre, 0, sizeof(pre));
	181	AWIDBits[7]=1;
	182	num_to_bytebits(26, 8, pre);
	183
	184	uint8_t wiegand[24];
	185	num_to_bytebits(fc, 8, wiegand);
	186	num_to_bytebits(cn, 16, wiegand+8);
	187
	188	wiegand_add_parity(pre+8, wiegand, 24);
	189
	190	size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
	191	if (bitLen != 88) return 0;
	192	//for (uint8_t i = 0; i<3; i++){
	193	// PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
	194	//}
37824afe	195	return 1;
dbf6e824 CY	196	}
dbf6e824 CY	197
709665b5	198	int CmdAWIDSim(const char *Cmd) {
	199	uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
	200	uint8_t BitStream[96];
	201	uint8_t *bs = BitStream;
	202	size_t size = sizeof(BitStream);
	203	memset(bs, 0, size);
	204
37824afe MHS	205	uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
37824afe MHS	206	uint64_t arg2 = 50; // clk RF/50 invert=0
709665b5	207
	208	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
	209
	210	fcode = (fc & 0x000000FF);
	211	cnum = (cn & 0x0000FFFF);
	212
	213	if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
	214	if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
37824afe	215
37824afe MHS	216	PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
37824afe MHS	217	PrintAndLog("Press pm3-button to abort simulation or run another command");
709665b5	218
	219	if (!getAWIDBits(fc, cn, bs)) {
	220	PrintAndLog("Error with tag bitstream generation.");
	221	return 1;
	222	}
37824afe	223	// AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
709665b5	224	UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
	225	memcpy(c.d.asBytes, bs, size);
	226	clearCommandBuffer();
37824afe MHS	227	SendCommand(&c);
37824afe MHS	228	return 0;
dbf6e824 CY	229	}
dbf6e824 CY	230
709665b5	231	int CmdAWIDClone(const char *Cmd) {
	232	uint32_t blocks[4] = {T55x7_MODULATION_FSK2a \| T55x7_BITRATE_RF_50 \| 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
	233	uint32_t fc=0,cn=0;
	234	uint8_t BitStream[96];
	235	uint8_t *bs=BitStream;
	236	memset(bs,0,sizeof(BitStream));
37824afe	237
709665b5	238	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
	239
	240	if (param_getchar(Cmd, 3) == 'Q' \|\| param_getchar(Cmd, 3) == 'q')
6f1a5978	241	blocks[0] = T5555_MODULATION_FSK2 \| T5555_INVERT_OUTPUT \| ((50-2)>>1)<<T5555_BITRATE_SHIFT \| 3<<T5555_MAXBLOCK_SHIFT;
37824afe MHS	242
	243	if ((fc & 0xFF) != fc) {
	244	fc &= 0xFF;
	245	PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
	246	}
	247	if ((cn & 0xFFFF) != cn) {
	248	cn &= 0xFFFF;
	249	PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
	250	}
976627d5	251
709665b5	252	if ( !getAWIDBits(fc, cn, bs)) {
	253	PrintAndLog("Error with tag bitstream generation.");
	254	return 1;
	255	}
	256
	257	blocks[1] = bytebits_to_byte(bs,32);
	258	blocks[2] = bytebits_to_byte(bs+32,32);
	259	blocks[3] = bytebits_to_byte(bs+64,32);
	260
	261	PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
	262	fc, cn);
	263	PrintAndLog("Blk \| Data ");
	264	PrintAndLog("----+------------");
	265	PrintAndLog(" 00 \| 0x%08x", blocks[0]);
	266	PrintAndLog(" 01 \| 0x%08x", blocks[1]);
	267	PrintAndLog(" 02 \| 0x%08x", blocks[2]);
	268	PrintAndLog(" 03 \| 0x%08x", blocks[3]);
	269
	270	UsbCommand resp;
	271	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
	272
	273	for (uint8_t i=0; i<4; i++) {
	274	c.cmd = CMD_T55XX_WRITE_BLOCK;
	275	c.arg[0] = blocks[i];
	276	c.arg[1] = i;
	277	c.arg[2] = 0;
	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;
37824afe	283	}
709665b5	284
37824afe MHS	285	}
37824afe MHS	286	return 0;
dbf6e824 CY	287	}
dbf6e824 CY	288
709665b5	289	static command_t CommandTable[] = {
709665b5	290	{"help", CmdHelp, 1, "This help"},
6cd2eef4	291	{"demod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from the GraphBuffer"},
6cd2eef4	292	{"read", CmdAWIDReadFSK, 0, "['1'] Realtime AWID FSK read from the antenna (option '1' for one tag only)"},
37824afe	293	{"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
709665b5	294	{"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
37824afe	295	{NULL, NULL, 0, NULL}
dbf6e824 CY	296	};
dbf6e824 CY	297
709665b5	298	int CmdLFAWID(const char *Cmd) {
37824afe MHS	299	CmdsParse(CommandTable, Cmd);
37824afe MHS	300	return 0;
dbf6e824 CY	301	}
dbf6e824 CY	302
709665b5	303	int CmdHelp(const char *Cmd) {
37824afe MHS	304	CmdsHelp(CommandTable);
37824afe MHS	305	return 0;
dbf6e824	306	}