[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"
#include "proxmark3.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 '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 | ((32-2)>>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
	8	//-----------------------------------------------------------------------------
	9	#include <string.h>
	10	#include <inttypes.h>
	11	#include "cmdlfpresco.h"
29ada8fc	12	#include "proxmark3.h"
	13	#include "ui.h"
	14	#include "util.h"
	15	#include "graph.h"
	16	#include "cmdparser.h"
	17	#include "cmddata.h"
	18	#include "cmdmain.h"
	19	#include "cmdlf.h"
	20	#include "protocols.h" // for T55xx config register definitions
	21	#include "lfdemod.h" // parityTest
	22
6923d3f1	23	static int CmdHelp(const char *Cmd);
	24
	25	int usage_lf_presco_clone(void){
	26	PrintAndLog("clone a Presco tag to a T55x7 tag.");
29ada8fc	27	PrintAndLog("Usage: lf presco clone d <Card-ID> H <hex-ID> <Q5>");
6923d3f1	28	PrintAndLog("Options :");
29ada8fc	29	PrintAndLog(" d <Card-ID> : 9 digit presco card ID");
	30	PrintAndLog(" H <hex-ID> : 8 digit hex card number");
	31	PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
6923d3f1	32	PrintAndLog("");
29ada8fc	33	PrintAndLog("Sample : lf presco clone d 123456789");
6923d3f1	34	return 0;
	35	}
	36
	37	int usage_lf_presco_sim(void) {
	38	PrintAndLog("Enables simulation of presco card with specified card number.");
	39	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
	40	PrintAndLog("Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
	41	PrintAndLog("");
29ada8fc	42	PrintAndLog("Usage: lf presco sim d <Card-ID> or H <hex-ID>");
6923d3f1	43	PrintAndLog("Options :");
29ada8fc	44	PrintAndLog(" d <Card-ID> : 9 digit presco card number");
29ada8fc	45	PrintAndLog(" H <hex-ID> : 8 digit hex card number");
6923d3f1	46	PrintAndLog("");
29ada8fc	47	PrintAndLog("Sample : lf presco sim d 123456789");
6923d3f1	48	return 0;
	49	}
	50
29ada8fc	51	// convert base 12 ID to sitecode & usercode & 8 bit other unknown code
	52	int GetWiegandFromPresco(const char Cmd, uint32_t sitecode, uint32_t usercode, uint32_t fullcode, bool *Q5) {
	53
6923d3f1	54	uint8_t val = 0;
29ada8fc	55	bool hex = false, errors = false;
	56	uint8_t cmdp = 0;
	57	char id[11];
	58	int stringlen = 0;
	59	while(param_getchar(Cmd, cmdp) != 0x00) {
	60	switch(param_getchar(Cmd, cmdp)) {
	61	case 'h':
	62	return -1;
	63	case 'H':
	64	hex = true;
	65	//get hex
	66	*fullcode = param_get32ex(Cmd, cmdp+1, 0, 10);
	67	cmdp+=2;
	68	break;
	69	case 'P':
	70	case 'p':
	71	//param get string int param_getstr(const char line, int paramnum, char str)
	72	stringlen = param_getstr(Cmd, cmdp+1, id);
	73	if (stringlen < 2) return -1;
	74	cmdp+=2;
	75	break;
	76	case 'Q':
	77	case 'q':
	78	*Q5 = true;
	79	cmdp++;
	80	break;
	81	default:
	82	PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
	83	errors = 1;
	84	break;
	85	}
	86	if(errors) break;
6923d3f1	87	}
29ada8fc	88	// No args
29ada8fc	89	if(cmdp == 0) errors = 1;
6923d3f1	90
29ada8fc	91	//Validations
29ada8fc	92	if(errors) return -1;
6923d3f1	93
29ada8fc	94	if (!hex) {
	95	for (int index =0; index < strlen(id); ++index) {
	96	// Get value from number string.
	97	if ( id[index] == '*' ) val = 10;
	98	if ( id[index] == '#') val = 11;
	99	if ( id[index] >= 0x30 && id[index] <= 0x39 )
	100	val = id[index] - 0x30;
	101
	102	*fullcode += val;
	103
	104	// last digit is only added, not multipled.
	105	if ( index < strlen(id)-1 )
	106	fullcode = 12;
	107	}
	108	}
6923d3f1	109
29ada8fc	110	usercode = fullcode & 0x0000FFFF; //% 65566
	111	sitecode = (fullcode >> 24) & 0x000000FF; // /= 16777216;
	112	return 0;
	113	}
6923d3f1	114
29ada8fc	115	// calc not certain - intended to get bitstream for programming / sim
	116	int GetPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
	117	num_to_bytebits(0x10D00000, 32, prescoBits);
	118	num_to_bytebits(0x00000000, 32, prescoBits+32);
	119	num_to_bytebits(0x00000000, 32, prescoBits+64);
	120	num_to_bytebits(fullcode , 32, prescoBits+96);
6923d3f1	121	return 1;
6923d3f1	122	}
29ada8fc	123
6923d3f1	124	//see ASKDemod for what args are accepted
	125	int CmdPrescoDemod(const char *Cmd) {
	126	if (!ASKDemod(Cmd, false, false, 1)) {
	127	if (g_debugMode) PrintAndLog("ASKDemod failed");
	128	return 0;
	129	}
	130	size_t size = DemodBufferLen;
	131	//call lfdemod.c demod for Viking
	132	int ans = PrescoDemod(DemodBuffer, &size);
	133	if (ans < 0) {
	134	if (g_debugMode) PrintAndLog("Error Presco_Demod %d", ans);
	135	return 0;
	136	}
	137	//got a good demod
	138	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
	139	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
29ada8fc	140	uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
	141	uint32_t raw4 = bytebits_to_byte(DemodBuffer+ans+96, 32);
	142	uint32_t cardid = raw4;
6923d3f1	143	PrintAndLog("Presco Tag Found: Card ID %08X", cardid);
29ada8fc	144	PrintAndLog("Raw: %08X%08X%08X%08X", raw1,raw2,raw3,raw4);
29ada8fc	145	setDemodBuf(DemodBuffer+ans, 128, 0);
6923d3f1	146
29ada8fc	147	uint32_t sitecode = 0, usercode = 0, fullcode = 0;
	148	bool Q5=false;
	149	char cmd[12] = {0};
	150	sprintf(cmd, "H %08X", cardid);
	151	GetWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
	152	PrintAndLog("SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);
	153
6923d3f1	154	return 1;
	155	}
	156
	157	//see ASKDemod for what args are accepted
	158	int CmdPrescoRead(const char *Cmd) {
29ada8fc	159	// Presco Number: 123456789 --> Sitecode 30 \| usercode 8665
6923d3f1	160
	161	// read lf silently
	162	CmdLFRead("s");
	163	// get samples silently
	164	getSamples("30000",false);
	165	// demod and output Presco ID
	166	return CmdPrescoDemod(Cmd);
	167	}
	168
29ada8fc	169	// takes base 12 ID converts to hex
29ada8fc	170	// Or takes 8 digit hex ID
6923d3f1	171	int CmdPrescoClone(const char *Cmd) {
6923d3f1	172
29ada8fc	173	bool Q5 = false;
29ada8fc	174	uint32_t sitecode=0, usercode=0, fullcode=0;
6923d3f1	175	uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER \| T55x7_BITRATE_RF_32 \| 4<<T55x7_MAXBLOCK_SHIFT \| T55x7_ST_TERMINATOR, 0, 0, 0, 5};
6923d3f1	176
29ada8fc	177	// get wiegand from printed number.
	178	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_clone();
	179
	180	if (Q5)
6f1a5978	181	blocks[0] = T5555_MODULATION_MANCHESTER \| ((32-2)>>1)<<T5555_BITRATE_SHIFT \| 4<<T5555_MAXBLOCK_SHIFT \| T5555_ST_TERMINATOR;
6923d3f1	182
6923d3f1	183	if ((sitecode & 0xFF) != sitecode) {
	184	sitecode &= 0xFF;
	185	PrintAndLog("Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
	186	}
	187
	188	if ((usercode & 0xFFFF) != usercode) {
	189	usercode &= 0xFFFF;
	190	PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
	191	}
	192
29ada8fc	193	blocks[1] = 0x10D00000; //preamble
	194	blocks[2] = 0x00000000;
	195	blocks[3] = 0x00000000;
	196	blocks[4] = fullcode;
6923d3f1	197
29ada8fc	198	PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
6923d3f1	199	PrintAndLog("Blk \| Data ");
	200	PrintAndLog("----+------------");
	201	PrintAndLog(" 00 \| 0x%08x", blocks[0]);
	202	PrintAndLog(" 01 \| 0x%08x", blocks[1]);
	203	PrintAndLog(" 02 \| 0x%08x", blocks[2]);
	204	PrintAndLog(" 03 \| 0x%08x", blocks[3]);
	205	PrintAndLog(" 04 \| 0x%08x", blocks[4]);
6923d3f1	206
29ada8fc	207	UsbCommand resp;
29ada8fc	208	UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
6923d3f1	209
29ada8fc	210	for (int i=4; i>=0; i--) {
	211	c.arg[0] = blocks[i];
	212	c.arg[1] = i;
	213	clearCommandBuffer();
	214	SendCommand(&c);
	215	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
	216	PrintAndLog("Error occurred, device did not respond during write operation.");
	217	return -1;
	218	}
	219	}
	220	return 0;
	221	}
6923d3f1	222
29ada8fc	223	// takes base 12 ID converts to hex
	224	// Or takes 8 digit hex ID
	225	int CmdPrescoSim(const char *Cmd) {
	226	uint32_t sitecode=0, usercode=0, fullcode=0;
	227	bool Q5=false;
	228	// get wiegand from printed number.
	229	if (GetWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == -1) return usage_lf_presco_sim();
6923d3f1	230
29ada8fc	231	uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
	232	uint16_t arg1, arg2;
	233	size_t size = 128;
	234	arg1 = clk << 8 \| encoding;
	235	arg2 = invert << 8 \| separator;
6923d3f1	236
29ada8fc	237	PrintAndLog("Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X",sitecode, usercode, fullcode);
6923d3f1	238
29ada8fc	239	UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
	240	GetPrescoBits(fullcode, c.d.asBytes);
	241	clearCommandBuffer();
	242	SendCommand(&c);
6923d3f1	243	return 0;
	244	}
	245
	246	static command_t CommandTable[] = {
29ada8fc	247	{"help", CmdHelp, 1, "This help"},
	248	{"read", CmdPrescoRead, 0, "Attempt to read and Extract tag data"},
	249	{"clone", CmdPrescoClone, 0, "d <9 digit ID> or h <hex> [Q5] clone presco tag"},
	250	{"sim", CmdPrescoSim, 0, "d <9 digit ID> or h <hex> simulate presco tag"},
	251	{NULL, NULL, 0, NULL}
6923d3f1	252	};
	253
	254	int CmdLFPresco(const char *Cmd) {
	255	clearCommandBuffer();
	256	CmdsParse(CommandTable, Cmd);
	257	return 0;
	258	}
	259
	260	int CmdHelp(const char *Cmd) {
	261	CmdsHelp(CommandTable);
	262	return 0;
	263	}