[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;
	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 '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) {
	if (!ASKDemod(Cmd, false, false, 1)) {
		if (g_debugMode) PrintAndLog("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) 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+ans, 128, 0);
	
	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("30000",false);
	// 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<<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;
	48	while(param_getchar(Cmd, cmdp) != 0x00) {
	49	switch(param_getchar(Cmd, cmdp)) {
	50	case 'h':
	51	return -1;
	52	case 'H':
	53	hex = true;
	54	//get hex
	55	*fullcode = param_get32ex(Cmd, cmdp+1, 0, 10);
	56	cmdp+=2;
	57	break;
	58	case 'P':
	59	case 'p':
	60	//param get string int param_getstr(const char line, int paramnum, char str)
	61	stringlen = param_getstr(Cmd, cmdp+1, id);
	62	if (stringlen < 2) return -1;
	63	cmdp+=2;
	64	break;
	65	case 'Q':
	66	case 'q':
	67	*Q5 = true;
	68	cmdp++;
	69	break;
	70	default:
	71	PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
	72	errors = 1;
	73	break;
	74	}
	75	if(errors) break;
	76	}
	77	// No args
	78	if(cmdp == 0) errors = 1;
	79
	80	//Validations
	81	if(errors) return -1;
	82
	83	if (!hex) {
5a6e19e6	84	for (int index =0; index < strlen(id); ++index) {
	85
	86	// Get value from number string.
	87	if ( id[index] == '*' ) val = 10;
	88	if ( id[index] == '#') val = 11;
	89	if ( id[index] >= 0x30 && id[index] <= 0x39 )
	90	val = id[index] - 0x30;
	91
6c68b84a	92	*fullcode += val;
5a6e19e6	93
	94	// last digit is only added, not multipled.
	95	if ( index < strlen(id)-1 )
6c68b84a	96	fullcode = 12;
6c68b84a	97	}
5a6e19e6	98	}
6c68b84a	99
	100	usercode = fullcode & 0x0000FFFF; //% 65566
	101	sitecode = (fullcode >> 24) & 0x000000FF; // /= 16777216;
5a6e19e6	102	return 0;
	103	}
	104
6c68b84a	105	// calc not certain - intended to get bitstream for programming / sim
	106	int GetPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
	107	num_to_bytebits(0x10D00000, 32, prescoBits);
	108	num_to_bytebits(0x00000000, 32, prescoBits+32);
	109	num_to_bytebits(0x00000000, 32, prescoBits+64);
	110	num_to_bytebits(fullcode , 32, prescoBits+96);
5a6e19e6	111	return 1;
5a6e19e6	112	}
6c68b84a	113
4469412e	114	//see ASKDemod for what args are accepted
	115	int CmdPrescoDemod(const char *Cmd) {
	116	if (!ASKDemod(Cmd, false, false, 1)) {
	117	if (g_debugMode) PrintAndLog("ASKDemod failed");
	118	return 0;
	119	}
	120	size_t size = DemodBufferLen;
	121	//call lfdemod.c demod for Viking
	122	int ans = PrescoDemod(DemodBuffer, &size);
	123	if (ans < 0) {
	124	if (g_debugMode) PrintAndLog("Error Presco_Demod %d", ans);
	125	return 0;
	126	}
	127	//got a good demod
	128	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
	129	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
6c68b84a	130	uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
	131	uint32_t raw4 = bytebits_to_byte(DemodBuffer+ans+96, 32);
	132	uint32_t cardid = raw4;
4469412e	133	PrintAndLog("Presco Tag Found: Card ID %08X", cardid);
6c68b84a	134	PrintAndLog("Raw: %08X%08X%08X%08X", raw1,raw2,raw3,raw4);
6c68b84a	135	setDemodBuf(DemodBuffer+ans, 128, 0);
4469412e	136
6c68b84a	137	uint32_t sitecode = 0, usercode = 0, fullcode = 0;
	138	bool Q5=false;
	139	char cmd[12] = {0};
	140	sprintf(cmd, "H %08X", cardid);
	141	GetWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
	142	PrintAndLog("SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);
4469412e	143
	144	return 1;
	145	}
5a6e19e6	146
	147	//see ASKDemod for what args are accepted
	148	int CmdPrescoRead(const char *Cmd) {
4469412e	149	// Presco Number: 123456789 --> Sitecode 30 \| usercode 8665
5a6e19e6	150
5a6e19e6	151	// read lf silently
4469412e	152	CmdLFRead("s");
5a6e19e6	153	// get samples silently
4469412e	154	getSamples("30000",false);
	155	// demod and output Presco ID
	156	return CmdPrescoDemod(Cmd);
5a6e19e6	157	}
5a6e19e6	158
6c68b84a	159	// takes base 12 ID converts to hex
6c68b84a	160	// Or takes 8 digit hex ID
5a6e19e6	161	int CmdPrescoClone(const char *Cmd) {
5a6e19e6	162
6c68b84a	163	bool Q5 = false;
6c68b84a	164	uint32_t sitecode=0, usercode=0, fullcode=0;
5a6e19e6	165	uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER \| T55x7_BITRATE_RF_32 \| 4<<T55x7_MAXBLOCK_SHIFT \| T55x7_ST_TERMINATOR, 0, 0, 0, 5};
5a6e19e6	166
6c68b84a	167	// get wiegand from printed number.
	168	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_clone();
	169
	170	if (Q5)
5a6e19e6	171	blocks[0] = T5555_MODULATION_MANCHESTER \| 32<<T5555_BITRATE_SHIFT \| 4<<T5555_MAXBLOCK_SHIFT \| T5555_ST_TERMINATOR;
5a6e19e6	172
5a6e19e6	173	if ((sitecode & 0xFF) != sitecode) {
	174	sitecode &= 0xFF;
	175	PrintAndLog("Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
	176	}
	177
	178	if ((usercode & 0xFFFF) != usercode) {
	179	usercode &= 0xFFFF;
	180	PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
	181	}
	182
6c68b84a	183	blocks[1] = 0x10D00000; //preamble
	184	blocks[2] = 0x00000000;
	185	blocks[3] = 0x00000000;
	186	blocks[4] = fullcode;
5a6e19e6	187
6c68b84a	188	PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
5a6e19e6	189	PrintAndLog("Blk \| Data ");
	190	PrintAndLog("----+------------");
	191	PrintAndLog(" 00 \| 0x%08x", blocks[0]);
	192	PrintAndLog(" 01 \| 0x%08x", blocks[1]);
	193	PrintAndLog(" 02 \| 0x%08x", blocks[2]);
	194	PrintAndLog(" 03 \| 0x%08x", blocks[3]);
	195	PrintAndLog(" 04 \| 0x%08x", blocks[4]);
	196
6c68b84a	197	UsbCommand resp;
	198	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
	199
	200	for (int i=4; i>=0; i--) {
	201	c.arg[0] = blocks[i];
	202	c.arg[1] = i;
	203	clearCommandBuffer();
	204	SendCommand(&c);
	205	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
	206	PrintAndLog("Error occurred, device did not respond during write operation.");
	207	return -1;
	208	}
	209	}
5a6e19e6	210	return 0;
	211	}
	212
6c68b84a	213	// takes base 12 ID converts to hex
6c68b84a	214	// Or takes 8 digit hex ID
5a6e19e6	215	int CmdPrescoSim(const char *Cmd) {
6c68b84a	216	uint32_t sitecode=0, usercode=0, fullcode=0;
	217	bool Q5=false;
	218	// get wiegand from printed number.
	219	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_sim();
5a6e19e6	220
6c68b84a	221	uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
	222	uint16_t arg1, arg2;
	223	size_t size = 128;
	224	arg1 = clk << 8 \| encoding;
	225	arg2 = invert << 8 \| separator;
5a6e19e6	226
6c68b84a	227	PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);
5a6e19e6	228
6c68b84a	229	UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
	230	GetPrescoBits(fullcode, c.d.asBytes);
	231	clearCommandBuffer();
	232	SendCommand(&c);
5a6e19e6	233	return 0;
	234	}
	235
	236	static command_t CommandTable[] = {
	237	{"help", CmdHelp, 1, "This help"},
	238	{"read", CmdPrescoRead, 0, "Attempt to read and Extract tag data"},
6c68b84a	239	{"clone", CmdPrescoClone, 0, "d <9 digit ID> or h <hex> [Q5] clone presco tag"},
6c68b84a	240	{"sim", CmdPrescoSim, 0, "d <9 digit ID> or h <hex> simulate presco tag"},
5a6e19e6	241	{NULL, NULL, 0, NULL}
	242	};
	243
	244	int CmdLFPresco(const char *Cmd) {
4c36581b	245	clearCommandBuffer();
5a6e19e6	246	CmdsParse(CommandTable, Cmd);
	247	return 0;
	248	}
	249
	250	int CmdHelp(const char *Cmd) {
	251	CmdsHelp(CommandTable);
	252	return 0;
	253	}