[proxmark3-svn] / client / cmdlfpresco.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 Presco tag commands
// ASK/Manchester, rf/32, 128 bits (complete)
//-----------------------------------------------------------------------------

#include "cmdlfpresco.h"

#include <string.h>
#include <inttypes.h>
#include <stdio.h>
#include "comms.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdmain.h"
#include "cmdlf.h"
#include "protocols.h"  // for T55xx config register definitions
#include "lfdemod.h"    // parityTest

static int CmdHelp(const char *Cmd);

int usage_lf_presco_clone(void){
	PrintAndLog("clone a Presco tag to a T55x7 tag.");
	PrintAndLog("Usage: lf presco clone d <Card-ID> H <hex-ID> <Q5>");
	PrintAndLog("Options :");
	PrintAndLog("  d <Card-ID>   : 9 digit presco card ID");
	PrintAndLog("  H <hex-ID>    : 8 digit hex card number");
	PrintAndLog("  <Q5>          : specify write to Q5 (t5555 instead of t55x7)");
	PrintAndLog("");
	PrintAndLog("Sample  : lf presco clone d 123456789");
	return 0;
}

int usage_lf_presco_sim(void) {
	PrintAndLog("Enables simulation of presco card with specified card number.");
	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	PrintAndLog("Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
	PrintAndLog("");
	PrintAndLog("Usage:  lf presco sim d <Card-ID> or H <hex-ID>");
	PrintAndLog("Options :");
	PrintAndLog("  d <Card-ID>   : 9 digit presco card number");
	PrintAndLog("  H <hex-ID>    : 8 digit hex card number");
	PrintAndLog("");
	PrintAndLog("Sample  : lf presco sim d 123456789");
	return 0;
}

// convert base 12 ID to sitecode & usercode & 8 bit other unknown code
int GetWiegandFromPresco(const char *Cmd, uint32_t *sitecode, uint32_t *usercode, uint32_t *fullcode, bool *Q5) {

	uint8_t val = 0;
	bool hex = false, errors = false;
	uint8_t cmdp = 0;
	char id[11];
	int stringlen = 0;
	while(param_getchar(Cmd, cmdp) != 0x00) {
		switch(param_getchar(Cmd, cmdp)) {
			case 'h':
				return -1;
			case 'H':
				hex = true;
				//get hex
				*fullcode = param_get32ex(Cmd, cmdp+1, 0, 10);
				cmdp+=2;
				break;
			case 'D':
			case 'd':
				//param get string int param_getstr(const char *line, int paramnum, char * str)
				stringlen = param_getstr(Cmd, cmdp+1, id, sizeof(id));
				if (stringlen < 2) return -1;
				cmdp+=2;
				break;
			case 'Q':
			case 'q':
				*Q5 = true;
				cmdp++;
				break;
			default:
				PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
				errors = 1;
				break;
		}
		if(errors) break;
	}
	// No args
	if(cmdp == 0) errors = 1;

	//Validations
	if(errors || (stringlen == 0 && !hex) ) return -1;

	if (!hex) {
		for (int index =0; index < strlen(id); ++index) {
			// Get value from number string.
			if ( id[index] == '*' ) val = 10;
			if ( id[index] == '#')	val = 11;		
			if ( id[index] >= 0x30 && id[index] <= 0x39 )
				val = id[index] - 0x30;
			
			*fullcode += val;
			
			// last digit is only added, not multipled.
			if ( index < strlen(id)-1 ) 
				*fullcode *= 12;
		}
	}

	*usercode = *fullcode & 0x0000FFFF; //% 65566
	*sitecode = (*fullcode >> 24) & 0x000000FF;  // /= 16777216;
	return 0;
}

// calc not certain - intended to get bitstream for programming / sim
int GetPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
	num_to_bytebits(0x10D00000, 32, prescoBits);
	num_to_bytebits(0x00000000, 32, prescoBits+32);
	num_to_bytebits(0x00000000, 32, prescoBits+64);
	num_to_bytebits(fullcode  , 32, prescoBits+96);
	return 1;
}

//see ASKDemod for what args are accepted
int CmdPrescoDemod(const char *Cmd) {
	if (!ASKDemod(Cmd, false, false, 1)) {
		if (g_debugMode) PrintAndLog("ASKDemod failed");
		return 0;
	}
	size_t size = DemodBufferLen;
	//call lfdemod.c demod for presco
	int ans = PrescoDemod(DemodBuffer, &size);
	if (ans < 0) {
		if (g_debugMode) PrintAndLog("Error Presco_Demod %d", ans);
		return 0;
	}
	//got a good demod
	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
	uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
	uint32_t raw4 = bytebits_to_byte(DemodBuffer+ans+96, 32);
	uint32_t cardid = raw4;
	PrintAndLog("Presco Tag Found: Card ID %08X", cardid);
	PrintAndLog("Raw: %08X%08X%08X%08X", raw1,raw2,raw3,raw4);
	setDemodBuf(DemodBuffer, 128, ans);
	setClockGrid(g_DemodClock, g_DemodStartIdx + (ans*g_DemodClock));

	uint32_t sitecode = 0, usercode = 0, fullcode = 0;
	bool Q5=false;
	char cmd[12] = {0};
	sprintf(cmd, "H %08X", cardid);
	GetWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
	PrintAndLog("SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);

	return 1;
}

//see ASKDemod for what args are accepted
int CmdPrescoRead(const char *Cmd) {
	// Presco Number: 123456789 --> Sitecode 30 | usercode 8665

	// read lf silently
	lf_read(true, 10000);
	// demod and output Presco ID	
	return CmdPrescoDemod(Cmd);
}

// takes base 12 ID converts to hex
// Or takes 8 digit hex ID
int CmdPrescoClone(const char *Cmd) {

	bool Q5 = false;
	uint32_t sitecode=0, usercode=0, fullcode=0;
	uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | 4<<T55x7_MAXBLOCK_SHIFT | T55x7_ST_TERMINATOR, 0, 0, 0, 5};
	
	// get wiegand from printed number.
	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_clone();

	if (Q5)
		blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1)<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT | T5555_ST_TERMINATOR;

	if ((sitecode & 0xFF) != sitecode) {
		sitecode &= 0xFF;
		PrintAndLog("Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
	}

	if ((usercode & 0xFFFF) != usercode) {
		usercode &= 0xFFFF;
		PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
	}
	
	blocks[1] = 0x10D00000; //preamble
	blocks[2] = 0x00000000;
	blocks[3] = 0x00000000;
	blocks[4] = fullcode;

	PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
	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]);	
	PrintAndLog(" 04 | 0x%08x", blocks[4]);	

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

	for (int i=4; i>=0; 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;
}

// takes base 12 ID converts to hex
// Or takes 8 digit hex ID
int CmdPrescoSim(const char *Cmd) {
	uint32_t sitecode=0, usercode=0, fullcode=0;
	bool Q5=false;
	// get wiegand from printed number.
	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_sim();

	uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
	uint16_t arg1, arg2;
	size_t size = 128;
	arg1 = clk << 8 | encoding;
	arg2 = invert << 8 | separator;

	PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);

	UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
	GetPrescoBits(fullcode, c.d.asBytes);
	clearCommandBuffer();
	SendCommand(&c);
	return 0;
}

static command_t CommandTable[] = {
	{"help",  CmdHelp,        1, "This help"},
	{"read",  CmdPrescoRead,  0, "Attempt to read and Extract tag data"},
	{"clone", CmdPrescoClone, 0, "d <9 digit ID> or h <hex> [Q5] clone presco tag"},
	{"sim",   CmdPrescoSim,   0, "d <9 digit ID> or h <hex> simulate presco tag"},
	{NULL, NULL, 0, NULL}
};

int CmdLFPresco(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 Presco tag commands
b9957414	8	// ASK/Manchester, rf/32, 128 bits (complete)
6923d3f1	9	//-----------------------------------------------------------------------------
ad939de5	10
	11	#include "cmdlfpresco.h"
	12
6923d3f1	13	#include <string.h>
6923d3f1	14	#include <inttypes.h>
acf0582d	15	#include <stdio.h>
ad939de5	16	#include "comms.h"
29ada8fc	17	#include "ui.h"
	18	#include "util.h"
	19	#include "graph.h"
	20	#include "cmdparser.h"
	21	#include "cmddata.h"
	22	#include "cmdmain.h"
	23	#include "cmdlf.h"
	24	#include "protocols.h" // for T55xx config register definitions
	25	#include "lfdemod.h" // parityTest
	26
6923d3f1	27	static int CmdHelp(const char *Cmd);
	28
	29	int usage_lf_presco_clone(void){
	30	PrintAndLog("clone a Presco tag to a T55x7 tag.");
29ada8fc	31	PrintAndLog("Usage: lf presco clone d <Card-ID> H <hex-ID> <Q5>");
6923d3f1	32	PrintAndLog("Options :");
29ada8fc	33	PrintAndLog(" d <Card-ID> : 9 digit presco card ID");
	34	PrintAndLog(" H <hex-ID> : 8 digit hex card number");
	35	PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
6923d3f1	36	PrintAndLog("");
29ada8fc	37	PrintAndLog("Sample : lf presco clone d 123456789");
6923d3f1	38	return 0;
	39	}
	40
	41	int usage_lf_presco_sim(void) {
	42	PrintAndLog("Enables simulation of presco card with specified card number.");
	43	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	44	PrintAndLog("Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
	45	PrintAndLog("");
29ada8fc	46	PrintAndLog("Usage: lf presco sim d <Card-ID> or H <hex-ID>");
6923d3f1	47	PrintAndLog("Options :");
29ada8fc	48	PrintAndLog(" d <Card-ID> : 9 digit presco card number");
29ada8fc	49	PrintAndLog(" H <hex-ID> : 8 digit hex card number");
6923d3f1	50	PrintAndLog("");
29ada8fc	51	PrintAndLog("Sample : lf presco sim d 123456789");
6923d3f1	52	return 0;
	53	}
	54
29ada8fc	55	// convert base 12 ID to sitecode & usercode & 8 bit other unknown code
	56	int GetWiegandFromPresco(const char Cmd, uint32_t sitecode, uint32_t usercode, uint32_t fullcode, bool *Q5) {
	57
6923d3f1	58	uint8_t val = 0;
29ada8fc	59	bool hex = false, errors = false;
	60	uint8_t cmdp = 0;
	61	char id[11];
	62	int stringlen = 0;
	63	while(param_getchar(Cmd, cmdp) != 0x00) {
	64	switch(param_getchar(Cmd, cmdp)) {
	65	case 'h':
	66	return -1;
	67	case 'H':
	68	hex = true;
	69	//get hex
	70	*fullcode = param_get32ex(Cmd, cmdp+1, 0, 10);
	71	cmdp+=2;
	72	break;
dab1c6f5	73	case 'D':
dab1c6f5	74	case 'd':
29ada8fc	75	//param get string int param_getstr(const char line, int paramnum, char str)
874572d4	76	stringlen = param_getstr(Cmd, cmdp+1, id, sizeof(id));
29ada8fc	77	if (stringlen < 2) return -1;
	78	cmdp+=2;
	79	break;
	80	case 'Q':
	81	case 'q':
	82	*Q5 = true;
	83	cmdp++;
	84	break;
	85	default:
	86	PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
	87	errors = 1;
	88	break;
	89	}
	90	if(errors) break;
6923d3f1	91	}
29ada8fc	92	// No args
29ada8fc	93	if(cmdp == 0) errors = 1;
6923d3f1	94
29ada8fc	95	//Validations
ebf93643	96	if(errors \|\| (stringlen == 0 && !hex) ) return -1;
6923d3f1	97
29ada8fc	98	if (!hex) {
	99	for (int index =0; index < strlen(id); ++index) {
	100	// Get value from number string.
	101	if ( id[index] == '*' ) val = 10;
	102	if ( id[index] == '#') val = 11;
	103	if ( id[index] >= 0x30 && id[index] <= 0x39 )
	104	val = id[index] - 0x30;
	105
	106	*fullcode += val;
	107
	108	// last digit is only added, not multipled.
	109	if ( index < strlen(id)-1 )
	110	fullcode = 12;
	111	}
	112	}
6923d3f1	113
29ada8fc	114	usercode = fullcode & 0x0000FFFF; //% 65566
	115	sitecode = (fullcode >> 24) & 0x000000FF; // /= 16777216;
	116	return 0;
	117	}
6923d3f1	118
29ada8fc	119	// calc not certain - intended to get bitstream for programming / sim
	120	int GetPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
	121	num_to_bytebits(0x10D00000, 32, prescoBits);
	122	num_to_bytebits(0x00000000, 32, prescoBits+32);
	123	num_to_bytebits(0x00000000, 32, prescoBits+64);
	124	num_to_bytebits(fullcode , 32, prescoBits+96);
6923d3f1	125	return 1;
6923d3f1	126	}
29ada8fc	127
6923d3f1	128	//see ASKDemod for what args are accepted
	129	int CmdPrescoDemod(const char *Cmd) {
	130	if (!ASKDemod(Cmd, false, false, 1)) {
	131	if (g_debugMode) PrintAndLog("ASKDemod failed");
	132	return 0;
	133	}
	134	size_t size = DemodBufferLen;
b9957414	135	//call lfdemod.c demod for presco
6923d3f1	136	int ans = PrescoDemod(DemodBuffer, &size);
	137	if (ans < 0) {
	138	if (g_debugMode) PrintAndLog("Error Presco_Demod %d", ans);
	139	return 0;
	140	}
	141	//got a good demod
	142	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
	143	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
29ada8fc	144	uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
	145	uint32_t raw4 = bytebits_to_byte(DemodBuffer+ans+96, 32);
	146	uint32_t cardid = raw4;
6923d3f1	147	PrintAndLog("Presco Tag Found: Card ID %08X", cardid);
29ada8fc	148	PrintAndLog("Raw: %08X%08X%08X%08X", raw1,raw2,raw3,raw4);
9fe4507c	149	setDemodBuf(DemodBuffer, 128, ans);
	150	setClockGrid(g_DemodClock, g_DemodStartIdx + (ans*g_DemodClock));
	151
29ada8fc	152	uint32_t sitecode = 0, usercode = 0, fullcode = 0;
	153	bool Q5=false;
	154	char cmd[12] = {0};
	155	sprintf(cmd, "H %08X", cardid);
	156	GetWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
	157	PrintAndLog("SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);
	158
6923d3f1	159	return 1;
	160	}
	161
	162	//see ASKDemod for what args are accepted
	163	int CmdPrescoRead(const char *Cmd) {
29ada8fc	164	// Presco Number: 123456789 --> Sitecode 30 \| usercode 8665
6923d3f1	165
6923d3f1	166	// read lf silently
b9957414	167	lf_read(true, 10000);
6923d3f1	168	// demod and output Presco ID
	169	return CmdPrescoDemod(Cmd);
	170	}
	171
29ada8fc	172	// takes base 12 ID converts to hex
29ada8fc	173	// Or takes 8 digit hex ID
6923d3f1	174	int CmdPrescoClone(const char *Cmd) {
6923d3f1	175
29ada8fc	176	bool Q5 = false;
29ada8fc	177	uint32_t sitecode=0, usercode=0, fullcode=0;
6923d3f1	178	uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER \| T55x7_BITRATE_RF_32 \| 4<<T55x7_MAXBLOCK_SHIFT \| T55x7_ST_TERMINATOR, 0, 0, 0, 5};
6923d3f1	179
29ada8fc	180	// get wiegand from printed number.
	181	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_clone();
	182
	183	if (Q5)
6f1a5978	184	blocks[0] = T5555_MODULATION_MANCHESTER \| ((32-2)>>1)<<T5555_BITRATE_SHIFT \| 4<<T5555_MAXBLOCK_SHIFT \| T5555_ST_TERMINATOR;
6923d3f1	185
6923d3f1	186	if ((sitecode & 0xFF) != sitecode) {
	187	sitecode &= 0xFF;
	188	PrintAndLog("Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
	189	}
	190
	191	if ((usercode & 0xFFFF) != usercode) {
	192	usercode &= 0xFFFF;
	193	PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
	194	}
	195
29ada8fc	196	blocks[1] = 0x10D00000; //preamble
	197	blocks[2] = 0x00000000;
	198	blocks[3] = 0x00000000;
	199	blocks[4] = fullcode;
6923d3f1	200
29ada8fc	201	PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
6923d3f1	202	PrintAndLog("Blk \| Data ");
	203	PrintAndLog("----+------------");
	204	PrintAndLog(" 00 \| 0x%08x", blocks[0]);
	205	PrintAndLog(" 01 \| 0x%08x", blocks[1]);
	206	PrintAndLog(" 02 \| 0x%08x", blocks[2]);
	207	PrintAndLog(" 03 \| 0x%08x", blocks[3]);
	208	PrintAndLog(" 04 \| 0x%08x", blocks[4]);
6923d3f1	209
29ada8fc	210	UsbCommand resp;
29ada8fc	211	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
6923d3f1	212
29ada8fc	213	for (int i=4; i>=0; i--) {
	214	c.arg[0] = blocks[i];
	215	c.arg[1] = i;
	216	clearCommandBuffer();
	217	SendCommand(&c);
	218	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
	219	PrintAndLog("Error occurred, device did not respond during write operation.");
	220	return -1;
	221	}
	222	}
	223	return 0;
	224	}
6923d3f1	225
29ada8fc	226	// takes base 12 ID converts to hex
	227	// Or takes 8 digit hex ID
	228	int CmdPrescoSim(const char *Cmd) {
	229	uint32_t sitecode=0, usercode=0, fullcode=0;
	230	bool Q5=false;
	231	// get wiegand from printed number.
	232	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_sim();
6923d3f1	233
29ada8fc	234	uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
	235	uint16_t arg1, arg2;
	236	size_t size = 128;
	237	arg1 = clk << 8 \| encoding;
	238	arg2 = invert << 8 \| separator;
6923d3f1	239
29ada8fc	240	PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);
6923d3f1	241
29ada8fc	242	UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
	243	GetPrescoBits(fullcode, c.d.asBytes);
	244	clearCommandBuffer();
	245	SendCommand(&c);
6923d3f1	246	return 0;
	247	}
	248
	249	static command_t CommandTable[] = {
29ada8fc	250	{"help", CmdHelp, 1, "This help"},
	251	{"read", CmdPrescoRead, 0, "Attempt to read and Extract tag data"},
	252	{"clone", CmdPrescoClone, 0, "d <9 digit ID> or h <hex> [Q5] clone presco tag"},
	253	{"sim", CmdPrescoSim, 0, "d <9 digit ID> or h <hex> simulate presco tag"},
	254	{NULL, NULL, 0, NULL}
6923d3f1	255	};
	256
	257	int CmdLFPresco(const char *Cmd) {
	258	clearCommandBuffer();
	259	CmdsParse(CommandTable, Cmd);
	260	return 0;
	261	}
	262
	263	int CmdHelp(const char *Cmd) {
	264	CmdsHelp(CommandTable);
	265	return 0;
	266	}