//-----------------------------------------------------------------------------
//
// 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 "cmdlffdx.h"
/*
FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
8 databits + 1 parity (1)
CIITT 16 checksum
NATIONAL CODE, ICAR database
COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
FLAG (animal/non-animal)
38 IDbits
10 country code
1 extra app bit
14 reserved bits
1 animal bit
16 ccitt CRC chksum over 64bit ID CODE.
24 appli bits.
sample: 985121004515220 [ 37FF65B88EF94 ]
*/
static int CmdHelp(const char *Cmd);
int usage_lf_fdx_clone(void){
PrintAndLog("clone a FDX-B Animal tag to a T55x7 tag.");
PrintAndLog("Usage: lf fdx clone [h] <country id> <animal id> <Q5>");
PrintAndLog("Options:");
PrintAndLog(" h : This help");
PrintAndLog(" <country id> : Country id");
PrintAndLog(" <animal id> : Animal id");
// has extended data?
//reserved/rfu
//is animal tag
// extended data
PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
PrintAndLog("");
PrintAndLog("Sample: lf fdx clone 999 112233");
return 0;
}
int usage_lf_fdx_sim(void) {
PrintAndLog("Enables simulation of FDX-B Animal tag");
PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
PrintAndLog("");
PrintAndLog("Usage: lf fdx sim [h] <country id> <animal id>");
PrintAndLog("Options:");
PrintAndLog(" h : This help");
PrintAndLog(" <country id> : Country id");
PrintAndLog(" <animal id> : Animal id");
PrintAndLog("");
PrintAndLog("Sample: lf fdx sim 999 112233");
return 0;
}
// clearing the topbit needed for the preambl detection.
static void verify_values(uint32_t countryid, uint64_t animalid){
if ((animalid & 0x3FFFFFFFFF) != animalid) {
animalid &= 0x3FFFFFFFFF;
PrintAndLog("Animal ID Truncated to 38bits: %"PRIx64, animalid);
}
if ( (countryid & 0x3ff) != countryid ) {
countryid &= 0x3ff;
PrintAndLog("Country ID Truncated to 10bits: %03d", countryid);
}
}
int getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) {
// add preamble ten 0x00 and one 0x01
memset(bits, 0x00, 10);
bits[10] = 1;
// 128bits
// every 9th bit is 0x01, but we can just fill the rest with 0x01 and overwrite
memset(bits, 0x01, 128);
// add preamble ten 0x00 and one 0x01
memset(bits, 0x00, 10);
// add reserved
num_to_bytebitsLSBF(0x00, 7, bits + 66);
num_to_bytebitsLSBF(0x00 >> 7, 7, bits + 74);
// add animal flag - OK
bits[65] = isanimal;
// add extended flag - OK
bits[81] = isextended;
// add national code 40bits - OK
num_to_bytebitsLSBF(national_id >> 0, 8, bits+11);
num_to_bytebitsLSBF(national_id >> 8, 8, bits+20);
num_to_bytebitsLSBF(national_id >> 16, 8, bits+29);
num_to_bytebitsLSBF(national_id >> 24, 8, bits+38);
num_to_bytebitsLSBF(national_id >> 32, 6, bits+47);
// add country code - OK
num_to_bytebitsLSBF(country >> 0, 2, bits+53);
num_to_bytebitsLSBF(country >> 2, 8, bits+56);
// add crc-16 - OK
uint8_t raw[8];
for (uint8_t i=0; i<8; ++i)
raw[i] = bytebits_to_byte(bits + 11 + i * 9, 8);
uint16_t crc = crc16_ccitt_kermit(raw, 8);
num_to_bytebitsLSBF(crc >> 0, 8, bits+83);
num_to_bytebitsLSBF(crc >> 8, 8, bits+92);
// extended data - OK
num_to_bytebitsLSBF( extended >> 0 , 8, bits+101);
num_to_bytebitsLSBF( extended >> 8 , 8, bits+110);
num_to_bytebitsLSBF( extended >> 16, 8, bits+119);
return 1;
}
//see ASKDemod for what args are accepted
//almost the same demod as cmddata.c/CmdFDXBdemodBI
int CmdFdxDemod(const char *Cmd) {
//Differential Biphase / di-phase (inverted biphase)
//get binary from ask wave
if (!ASKbiphaseDemod("0 32 1 0", FALSE)) {
if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B ASKbiphaseDemod failed");
return 0;
}
size_t size = DemodBufferLen;
int ans = FDXBdemodBI(DemodBuffer, &size);
if (ans < 0){
if (g_debugMode){
if (ans == -1)
PrintAndLog("DEBUG: Error - FDX-B too few bits found");
else if (ans == -2)
PrintAndLog("DEBUG: Error - FDX-B preamble not found");
else if (ans == -3)
PrintAndLog("DEBUG: Error - FDX-B Size not correct: %d", size);
else
PrintAndLog("DEBUG: Error - FDX-B ans: %d", ans);
}
return 0;
}
setDemodBuf(DemodBuffer, 128, ans);
// remove marker bits (1's every 9th digit after preamble) (pType = 2)
size = removeParity(DemodBuffer, 11, 9, 2, 117);
if ( size != 104 ) {
if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B error removeParity: %d", size);
return 0;
}
//got a good demod
uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(DemodBuffer+32,6)) << 32) | bytebits_to_byteLSBF(DemodBuffer,32);
uint16_t countryCode = bytebits_to_byteLSBF(DemodBuffer+38,10);
uint8_t dataBlockBit = DemodBuffer[48];
uint32_t reservedCode = bytebits_to_byteLSBF(DemodBuffer+49,14);
uint8_t animalBit = DemodBuffer[63];
uint32_t crc16 = bytebits_to_byteLSBF(DemodBuffer+64,16);
uint32_t extended = bytebits_to_byteLSBF(DemodBuffer+80,24);
uint64_t rawid = ((uint64_t)
//bytebits_to_byte(DemodBuffer, 8) << 96) |
//bytebits_to_byte(DemodBuffer,32) << 64) |
bytebits_to_byte(DemodBuffer,32) << 32) |
bytebits_to_byte(DemodBuffer+32, 32);
uint8_t raw[8];
num_to_bytes(rawid, 8, raw);
uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found: Raw : %s", sprint_hex(raw, 8));
PrintAndLog("Animal ID %04u-%012llu", countryCode, NationalCode);
PrintAndLog("National Code %012llu (0x%llX)", NationalCode, NationalCode);
PrintAndLog("Country Code %04u", countryCode);
PrintAndLog("Reserved/RFU %u (0x04%X)", reservedCode, reservedCode);
PrintAndLog("");
PrintAndLog("Animal Tag %s", animalBit ? "True" : "False");
PrintAndLog("Has extended data %s [0x%X]", dataBlockBit ? "True" : "False", extended);
PrintAndLog("CRC-16 0x%04X - 0x%04X [%s]", crc16, calcCrc, (calcCrc == crc16) ? "Ok" : "Failed");
if (g_debugMode) {
PrintAndLog("Start marker %d; Size %d", ans, size);
char *bin = sprint_bin_break(DemodBuffer, size, 16);
PrintAndLog("DEBUG bin stream:\n%s", bin);
}
return 1;
}
int CmdFdxRead(const char *Cmd) {
CmdLFRead("s");
getSamples("12000", TRUE);
return CmdFdxDemod(Cmd);
}
int CmdFdxClone(const char *Cmd) {
uint32_t countryid = 0;
uint64_t animalid = 0;
uint32_t blocks[5] = {T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0};
uint8_t bits[128];
uint8_t *bs = bits;
memset(bs, 0, sizeof(bits));
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_clone();
countryid = param_get32ex(Cmd, 0, 0, 10);
animalid = param_get64ex(Cmd, 1, 0, 10);
//Q5
if (param_getchar(Cmd, 1) == 'Q' || param_getchar(Cmd, 1) == 'q') {
//t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
blocks[0] = T5555_MODULATION_BIPHASE | T5555_INVERT_OUTPUT | 32<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT;
}
verify_values(countryid, animalid);
// getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits)
if ( !getFDXBits(animalid, countryid, 1, 0, 0, bs)) {
PrintAndLog("Error with tag bitstream generation.");
return 1;
}
// convert from bit stream to block data
blocks[1] = bytebits_to_byte(bs,32);
blocks[2] = bytebits_to_byte(bs+32,32);
blocks[3] = bytebits_to_byte(bs+64,32);
blocks[4] = bytebits_to_byte(bs+96,32);
PrintAndLog("Preparing to clone FDX-B to T55x7 with animal ID: %04u-%"PRIu64, countryid, animalid);
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, T55XX_WRITE_TIMEOUT)){
PrintAndLog("Error occurred, device did not respond during write operation.");
return -1;
}
}
return 0;
}
int CmdFdxSim(const char *Cmd) {
uint32_t countryid = 0;
uint64_t animalid = 0;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_sim();
countryid = param_get32ex(Cmd, 0, 0, 10);
animalid = param_get64ex(Cmd, 1, 0, 10);
verify_values(countryid, animalid);
uint8_t clk = 32, encoding = 2, separator = 0, invert = 1;
uint16_t arg1, arg2;
size_t size = 128;
arg1 = clk << 8 | encoding;
arg2 = invert << 8 | separator;
PrintAndLog("Simulating FDX-B animal ID: %04u-%"PRIu64, countryid, animalid);
UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
//getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits)
getFDXBits(animalid, countryid, 1, 0, 0, c.d.asBytes);
clearCommandBuffer();
SendCommand(&c);
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"demod", CmdFdxDemod,1, "Attempt extract tag data from graphbuf"},
{"read", CmdFdxRead, 0, "Attempt to read and extract tag data"},
{"clone", CmdFdxClone,0, "Clone animal ID tag to T55x7"},
{"sim", CmdFdxSim, 0, "Animal ID tag simulator"},
{NULL, NULL, 0, NULL}
};
int CmdLFFdx(const char *Cmd) {
clearCommandBuffer();
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}