[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
//-----------------------------------------------------------------------------
#include <string.h>
#include <inttypes.h>
#include "cmdlfpresco.h"
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;
	memset(id, 0x00, sizeof(id));
	
	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, 16);
				cmdp+=2;
				break;
			case 'P':
			case 'p':
				//param get string int param_getstr(const char *line, int paramnum, char * str)
				stringlen = param_getstr(Cmd, cmdp+1, 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) 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) {
	bool st = true;
	//if (!ASKDemod(Cmd, false, false, 1)) {
	if (!ASKDemod_ext("32 0 0", FALSE, FALSE, 1, &st)) {
		if (g_debugMode) PrintAndLog("DEBUG: Error Presco ASKDemod failed");
		return 0;
	}
	size_t size = DemodBufferLen;
	//call lfdemod.c demod for Viking
	int ans = PrescoDemod(DemodBuffer, &size);
	if (ans < 0) {
		if (g_debugMode){
			if (ans == -1)
				PrintAndLog("DEBUG: Error - Presco: too few bits found");
			else if (ans == -2)
				PrintAndLog("DEBUG: Error - Presco: preamble not found");
			else if (ans == -3)
				PrintAndLog("DEBUG: Error - Presco: Size not correct: %d", size);
			else
				PrintAndLog("DEBUG: Error - Presco: ans: %d", ans);
		}
		return 0;
	}
	setDemodBuf(DemodBuffer, 128, ans);
	
	//got a good demod
	uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
	uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
	uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
	uint32_t raw4 = bytebits_to_byte(DemodBuffer+96, 32);
	uint32_t cardid = raw4;
	PrintAndLog("Presco Tag Found: Card ID %08X, Raw: %08X%08X%08X%08X", cardid, raw1, raw2, raw3, raw4);

	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
	CmdLFRead("s");
	// get samples silently
	getSamples("20000", TRUE);
	// 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)
		//t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
		blocks[0] = T5555_MODULATION_MANCHESTER | 32<<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
5a6e19e6	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
	8	//-----------------------------------------------------------------------------
	9	#include <string.h>
	10	#include <inttypes.h>
	11	#include "cmdlfpresco.h"
	12	static int CmdHelp(const char *Cmd);
	13
	14	int usage_lf_presco_clone(void){
	15	PrintAndLog("clone a Presco tag to a T55x7 tag.");
6c68b84a	16	PrintAndLog("Usage: lf presco clone d <Card-ID> H <hex-ID> <Q5>");
5a6e19e6	17	PrintAndLog("Options :");
6c68b84a	18	PrintAndLog(" d <Card-ID> : 9 digit presco card ID");
	19	PrintAndLog(" H <hex-ID> : 8 digit hex card number");
	20	PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
5a6e19e6	21	PrintAndLog("");
6c68b84a	22	PrintAndLog("Sample : lf presco clone d 123456789");
5a6e19e6	23	return 0;
	24	}
	25
	26	int usage_lf_presco_sim(void) {
	27	PrintAndLog("Enables simulation of presco card with specified card number.");
	28	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	29	PrintAndLog("Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
	30	PrintAndLog("");
6c68b84a	31	PrintAndLog("Usage: lf presco sim d <Card-ID> or H <hex-ID>");
5a6e19e6	32	PrintAndLog("Options :");
6c68b84a	33	PrintAndLog(" d <Card-ID> : 9 digit presco card number");
6c68b84a	34	PrintAndLog(" H <hex-ID> : 8 digit hex card number");
5a6e19e6	35	PrintAndLog("");
6c68b84a	36	PrintAndLog("Sample : lf presco sim d 123456789");
5a6e19e6	37	return 0;
	38	}
	39
6c68b84a	40	// convert base 12 ID to sitecode & usercode & 8 bit other unknown code
6c68b84a	41	int GetWiegandFromPresco(const char Cmd, uint32_t sitecode, uint32_t usercode, uint32_t fullcode, bool *Q5) {
5a6e19e6	42
5a6e19e6	43	uint8_t val = 0;
6c68b84a	44	bool hex = false, errors = false;
	45	uint8_t cmdp = 0;
	46	char id[11];
	47	int stringlen = 0;
06eb3b1a	48	memset(id, 0x00, sizeof(id));
06eb3b1a	49
6c68b84a	50	while(param_getchar(Cmd, cmdp) != 0x00) {
	51	switch(param_getchar(Cmd, cmdp)) {
	52	case 'h':
	53	return -1;
	54	case 'H':
	55	hex = true;
	56	//get hex
d48175d4	57	*fullcode = param_get32ex(Cmd, cmdp+1, 0, 16);
6c68b84a	58	cmdp+=2;
	59	break;
	60	case 'P':
	61	case 'p':
	62	//param get string int param_getstr(const char line, int paramnum, char str)
	63	stringlen = param_getstr(Cmd, cmdp+1, id);
	64	if (stringlen < 2) return -1;
	65	cmdp+=2;
	66	break;
	67	case 'Q':
	68	case 'q':
	69	*Q5 = true;
	70	cmdp++;
	71	break;
	72	default:
	73	PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
	74	errors = 1;
	75	break;
	76	}
	77	if(errors) break;
	78	}
	79	// No args
	80	if(cmdp == 0) errors = 1;
	81
	82	//Validations
	83	if(errors) return -1;
	84
	85	if (!hex) {
06eb3b1a	86	for (int index =0; index < strlen(id); ++index) {
5a6e19e6	87
06eb3b1a	88	// Get value from number string.
	89	if ( id[index] == '*' ) val = 10;
	90	if ( id[index] == '#') val = 11;
	91	if ( id[index] >= 0x30 && id[index] <= 0x39 )
	92	val = id[index] - 0x30;
	93
	94	*fullcode += val;
	95
	96	// last digit is only added, not multipled.
	97	if ( index < strlen(id)-1 )
	98	fullcode = 12;
6c68b84a	99	}
5a6e19e6	100	}
6c68b84a	101
	102	usercode = fullcode & 0x0000FFFF; //% 65566
	103	sitecode = (fullcode >> 24) & 0x000000FF; // /= 16777216;
5a6e19e6	104	return 0;
	105	}
	106
6c68b84a	107	// calc not certain - intended to get bitstream for programming / sim
	108	int GetPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
	109	num_to_bytebits(0x10D00000, 32, prescoBits);
	110	num_to_bytebits(0x00000000, 32, prescoBits+32);
	111	num_to_bytebits(0x00000000, 32, prescoBits+64);
	112	num_to_bytebits(fullcode , 32, prescoBits+96);
5a6e19e6	113	return 1;
5a6e19e6	114	}
6c68b84a	115
4469412e	116	//see ASKDemod for what args are accepted
4469412e	117	int CmdPrescoDemod(const char *Cmd) {
d48175d4	118	bool st = true;
	119	//if (!ASKDemod(Cmd, false, false, 1)) {
	120	if (!ASKDemod_ext("32 0 0", FALSE, FALSE, 1, &st)) {
	121	if (g_debugMode) PrintAndLog("DEBUG: Error Presco ASKDemod failed");
4469412e	122	return 0;
	123	}
	124	size_t size = DemodBufferLen;
	125	//call lfdemod.c demod for Viking
	126	int ans = PrescoDemod(DemodBuffer, &size);
	127	if (ans < 0) {
d48175d4	128	if (g_debugMode){
	129	if (ans == -1)
	130	PrintAndLog("DEBUG: Error - Presco: too few bits found");
	131	else if (ans == -2)
	132	PrintAndLog("DEBUG: Error - Presco: preamble not found");
	133	else if (ans == -3)
	134	PrintAndLog("DEBUG: Error - Presco: Size not correct: %d", size);
	135	else
	136	PrintAndLog("DEBUG: Error - Presco: ans: %d", ans);
	137	}
4469412e	138	return 0;
4469412e	139	}
d48175d4	140	setDemodBuf(DemodBuffer, 128, ans);
d48175d4	141
4469412e	142	//got a good demod
d48175d4	143	uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
	144	uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
	145	uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
	146	uint32_t raw4 = bytebits_to_byte(DemodBuffer+96, 32);
6c68b84a	147	uint32_t cardid = raw4;
d48175d4	148	PrintAndLog("Presco Tag Found: Card ID %08X, Raw: %08X%08X%08X%08X", cardid, raw1, raw2, raw3, raw4);
d48175d4	149
6c68b84a	150	uint32_t sitecode = 0, usercode = 0, fullcode = 0;
d48175d4	151	bool Q5 = false;
6c68b84a	152	char cmd[12] = {0};
	153	sprintf(cmd, "H %08X", cardid);
	154	GetWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
	155	PrintAndLog("SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);
4469412e	156	return 1;
4469412e	157	}
5a6e19e6	158
	159	//see ASKDemod for what args are accepted
	160	int CmdPrescoRead(const char *Cmd) {
4469412e	161	// Presco Number: 123456789 --> Sitecode 30 \| usercode 8665
5a6e19e6	162
5a6e19e6	163	// read lf silently
4469412e	164	CmdLFRead("s");
5a6e19e6	165	// get samples silently
eb911aa8	166	getSamples("20000", TRUE);
4469412e	167	// demod and output Presco ID
4469412e	168	return CmdPrescoDemod(Cmd);
5a6e19e6	169	}
5a6e19e6	170
6c68b84a	171	// takes base 12 ID converts to hex
6c68b84a	172	// Or takes 8 digit hex ID
5a6e19e6	173	int CmdPrescoClone(const char *Cmd) {
5a6e19e6	174
6c68b84a	175	bool Q5 = false;
6c68b84a	176	uint32_t sitecode=0, usercode=0, fullcode=0;
5a6e19e6	177	uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER \| T55x7_BITRATE_RF_32 \| 4<<T55x7_MAXBLOCK_SHIFT \| T55x7_ST_TERMINATOR, 0, 0, 0, 5};
5a6e19e6	178
6c68b84a	179	// get wiegand from printed number.
	180	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_clone();
	181
	182	if (Q5)
890ae3dd	183	//t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
5a6e19e6	184	blocks[0] = T5555_MODULATION_MANCHESTER \| 32<<T5555_BITRATE_SHIFT \| 4<<T5555_MAXBLOCK_SHIFT \| T5555_ST_TERMINATOR;
5a6e19e6	185
5a6e19e6	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
6c68b84a	196	blocks[1] = 0x10D00000; //preamble
	197	blocks[2] = 0x00000000;
	198	blocks[3] = 0x00000000;
	199	blocks[4] = fullcode;
5a6e19e6	200
6c68b84a	201	PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
5a6e19e6	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]);
	209
6c68b84a	210	UsbCommand resp;
	211	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
	212
	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	}
5a6e19e6	223	return 0;
	224	}
	225
6c68b84a	226	// takes base 12 ID converts to hex
6c68b84a	227	// Or takes 8 digit hex ID
5a6e19e6	228	int CmdPrescoSim(const char *Cmd) {
6c68b84a	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();
5a6e19e6	233
6c68b84a	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;
5a6e19e6	239
6c68b84a	240	PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);
5a6e19e6	241
6c68b84a	242	UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
	243	GetPrescoBits(fullcode, c.d.asBytes);
	244	clearCommandBuffer();
	245	SendCommand(&c);
5a6e19e6	246	return 0;
	247	}
	248
	249	static command_t CommandTable[] = {
	250	{"help", CmdHelp, 1, "This help"},
	251	{"read", CmdPrescoRead, 0, "Attempt to read and Extract tag data"},
d48175d4	252	{"clone", CmdPrescoClone, 0, "d <9 digit ID> or h <hex> [Q5] clone presco tag"},
d48175d4	253	{"sim", CmdPrescoSim, 0, "d <9 digit ID> or h <hex> simulate presco tag"},
5a6e19e6	254	{NULL, NULL, 0, NULL}
	255	};
	256
	257	int CmdLFPresco(const char *Cmd) {
4c36581b	258	clearCommandBuffer();
5a6e19e6	259	CmdsParse(CommandTable, Cmd);
	260	return 0;
	261	}
	262
	263	int CmdHelp(const char *Cmd) {
	264	CmdsHelp(CommandTable);
	265	return 0;
	266	}