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proxmark3/client/cmdlft55xx.c
marshmellow42 6fe5c94bda lf demod cleanup nrz clock detect fixes 
slight adjustment to lf t55xx sampling code to start at the same spot
more consistently
reduce indala detection false positives
lf t55xx commands heavily tested and seem to be stable and reliable on
most modulations/bitrates (excluding Sequence Terminator configured
cards).
2015-11-18 00:10:11 -05:00

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//-----------------------------------------------------------------------------
//
// 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 T55xx commands
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <time.h>
#include "proxmark3.h"
#include "ui.h"
#include "graph.h"
#include "cmdmain.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdlf.h"
#include "cmdlft55xx.h"
#include "util.h"
#include "data.h"
#include "lfdemod.h"
#include "../common/crc.h"
#include "../common/iso14443crc.h"
#include "cmdhf14a.h"
#define CONFIGURATION_BLOCK 0x00
#define TRACE_BLOCK 0x01
#define REGULAR_READ_MODE_BLOCK 0xFF
// Default configuration
t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = FALSE, .offset = 0x00, .block0 = 0x00, .Q5 = FALSE };
t55xx_conf_block_t Get_t55xx_Config(){
return config;
}
void Set_t55xx_Config(t55xx_conf_block_t conf){
config = conf;
}
int usage_t55xx_config(){
PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>] [Q5]");
PrintAndLog("Options:");
PrintAndLog(" h This help");
PrintAndLog(" b <8|16|32|40|50|64|100|128> Set bitrate");
PrintAndLog(" d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa> Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");
PrintAndLog(" i [1] Invert data signal, defaults to normal");
PrintAndLog(" o [offset] Set offset, where data should start decode in bitstream");
PrintAndLog(" Q5 Set as Q5(T5555) chip instead of T55x7");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx config d FSK - FSK demodulation");
PrintAndLog(" lf t55xx config d FSK i 1 - FSK demodulation, inverse data");
PrintAndLog(" lf t55xx config d FSK i 1 o 3 - FSK demodulation, inverse data, offset=3,start from position 3 to decode data");
PrintAndLog("");
return 0;
}
int usage_t55xx_read(){
PrintAndLog("Usage: lf t55xx read [b <block>] [p <password>] <override_safety> <page1>");
PrintAndLog("Options:");
PrintAndLog(" b <block> - block number to read. Between 0-7");
PrintAndLog(" p <password> - OPTIONAL password (8 hex characters)");
PrintAndLog(" o - OPTIONAL override safety check");
PrintAndLog(" 1 - OPTIONAL read Page 1 instead of Page 0");
PrintAndLog(" ****WARNING****");
PrintAndLog(" Use of read with password on a tag not configured for a pwd");
PrintAndLog(" can damage the tag");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx read b 0 - read data from block 0");
PrintAndLog(" lf t55xx read b 0 p feedbeef - read data from block 0 password feedbeef");
PrintAndLog(" lf t55xx read b 0 p feedbeef o - read data from block 0 password feedbeef safety check");
PrintAndLog("");
return 0;
}
int usage_t55xx_write(){
PrintAndLog("Usage: lf t55xx wr [b <block>] [d <data>] [p <password>] [1]");
PrintAndLog("Options:");
PrintAndLog(" b <block> - block number to write. Between 0-7");
PrintAndLog(" d <data> - 4 bytes of data to write (8 hex characters)");
PrintAndLog(" p <password> - OPTIONAL password 4bytes (8 hex characters)");
PrintAndLog(" 1 - OPTIONAL write Page 1 instead of Page 0");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx wr b 3 d 11223344 - write 11223344 to block 3");
PrintAndLog(" lf t55xx wr b 3 d 11223344 p feedbeef - write 11223344 to block 3 password feedbeef");
PrintAndLog("");
return 0;
}
int usage_t55xx_trace() {
PrintAndLog("Usage: lf t55xx trace [1]");
PrintAndLog("Options:");
PrintAndLog(" [graph buffer data] - if set, use Graphbuffer otherwise read data from tag.");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx trace");
PrintAndLog(" lf t55xx trace 1");
PrintAndLog("");
return 0;
}
int usage_t55xx_info() {
PrintAndLog("Usage: lf t55xx info [1]");
PrintAndLog("Options:");
PrintAndLog(" [graph buffer data] - if set, use Graphbuffer otherwise read data from tag.");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx info");
PrintAndLog(" lf t55xx info 1");
PrintAndLog("");
return 0;
}
int usage_t55xx_dump(){
PrintAndLog("Usage: lf t55xx dump <password> [o]");
PrintAndLog("Options:");
PrintAndLog(" <password> - OPTIONAL password 4bytes (8 hex symbols)");
PrintAndLog(" o - OPTIONAL override, force pwd read despite danger to card");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx dump");
PrintAndLog(" lf t55xx dump feedbeef o");
PrintAndLog("");
return 0;
}
int usage_t55xx_detect(){
PrintAndLog("Usage: lf t55xx detect [1]");
PrintAndLog("Options:");
PrintAndLog(" [graph buffer data] - if set, use Graphbuffer otherwise read data from tag.");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx detect");
PrintAndLog(" lf t55xx detect 1");
PrintAndLog("");
return 0;
}
int usage_t55xx_wakup(){
PrintAndLog("Usage: lf t55xx wakeup [h] p <password>");
PrintAndLog("This commands send the Answer-On-Request command and leaves the readerfield ON afterwards.");
PrintAndLog("Options:");
PrintAndLog(" h - this help");
PrintAndLog(" p <password> - password 4bytes (8 hex symbols)");
PrintAndLog("");
PrintAndLog("Examples:");
PrintAndLog(" lf t55xx wakeup p 11223344 - send wakeup password");
return 0;
}
static int CmdHelp(const char *Cmd);
int CmdT55xxSetConfig(const char *Cmd) {
uint8_t offset = 0;
char modulation[5] = {0x00};
char tmp = 0x00;
uint8_t bitRate = 0;
uint8_t rates[9] = {8,16,32,40,50,64,100,128,0};
uint8_t cmdp = 0;
config.Q5 = FALSE;
bool errors = FALSE;
while(param_getchar(Cmd, cmdp) != 0x00 && !errors)
{
tmp = param_getchar(Cmd, cmdp);
switch(tmp)
{
case 'h':
case 'H':
return usage_t55xx_config();
case 'b':
errors |= param_getdec(Cmd, cmdp+1, &bitRate);
if ( !errors){
uint8_t i = 0;
for (; i < 9; i++){
if (rates[i]==bitRate) {
config.bitrate = i;
break;
}
}
if (i==9) errors = TRUE;
}
cmdp+=2;
break;
case 'd':
param_getstr(Cmd, cmdp+1, modulation);
cmdp += 2;
if ( strcmp(modulation, "FSK" ) == 0) {
config.modulation = DEMOD_FSK;
} else if ( strcmp(modulation, "FSK1" ) == 0) {
config.modulation = DEMOD_FSK1;
config.inverted=1;
} else if ( strcmp(modulation, "FSK1a" ) == 0) {
config.modulation = DEMOD_FSK1a;
config.inverted=0;
} else if ( strcmp(modulation, "FSK2" ) == 0) {
config.modulation = DEMOD_FSK2;
config.inverted=0;
} else if ( strcmp(modulation, "FSK2a" ) == 0) {
config.modulation = DEMOD_FSK2a;
config.inverted=1;
} else if ( strcmp(modulation, "ASK" ) == 0) {
config.modulation = DEMOD_ASK;
} else if ( strcmp(modulation, "NRZ" ) == 0) {
config.modulation = DEMOD_NRZ;
} else if ( strcmp(modulation, "PSK1" ) == 0) {
config.modulation = DEMOD_PSK1;
} else if ( strcmp(modulation, "PSK2" ) == 0) {
config.modulation = DEMOD_PSK2;
} else if ( strcmp(modulation, "PSK3" ) == 0) {
config.modulation = DEMOD_PSK3;
} else if ( strcmp(modulation, "BIa" ) == 0) {
config.modulation = DEMOD_BIa;
config.inverted=1;
} else if ( strcmp(modulation, "BI" ) == 0) {
config.modulation = DEMOD_BI;
config.inverted=0;
} else {
PrintAndLog("Unknown modulation '%s'", modulation);
errors = TRUE;
}
break;
case 'i':
config.inverted = param_getchar(Cmd,cmdp+1) == '1';
cmdp+=2;
break;
case 'o':
errors |= param_getdec(Cmd, cmdp+1, &offset);
if ( !errors )
config.offset = offset;
cmdp+=2;
break;
case 'Q':
case 'q':
config.Q5 = TRUE;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = TRUE;
break;
}
}
// No args
if (cmdp == 0) return printConfiguration( config );
//Validations
if (errors) return usage_t55xx_config();
config.block0 = 0;
return printConfiguration ( config );
}
int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, bool override, uint32_t password){
//Password mode
if ( usepwd ) {
// try reading the config block and verify that PWD bit is set before doing this!
if ( !override ) {
if ( !AquireData(0, CONFIGURATION_BLOCK, false, 0 ) ) return 0;
if ( !tryDetectModulation() ) {
PrintAndLog("Safety Check: Could not detect if PWD bit is set in config block. Exits.");
return 0;
} else {
PrintAndLog("Safety Check: PWD bit is NOT set in config block. Reading without password...");
usepwd = false;
page1 = false;
}
} else {
PrintAndLog("Safety Check Overriden - proceeding despite risk");
}
}
if (!AquireData(page1, block, usepwd, password) ) return 0;
if (!DecodeT55xxBlock()) return 0;
char blk[10]={0};
sprintf(blk,"%d", block);
printT55xxBlock(blk);
return 1;
}
int CmdT55xxReadBlock(const char *Cmd) {
uint8_t block = REGULAR_READ_MODE_BLOCK;
uint32_t password = 0; //default to blank Block 7
bool usepwd = false;
bool override = false;
bool page1 = false;
bool errors = false;
uint8_t cmdp = 0;
while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
switch(param_getchar(Cmd, cmdp)) {
case 'h':
case 'H':
return usage_t55xx_read();
case 'b':
case 'B':
errors |= param_getdec(Cmd, cmdp+1, &block);
cmdp += 2;
break;
case 'o':
case 'O':
override = true;
cmdp++;
break;
case 'p':
case 'P':
password = param_get32ex(Cmd, cmdp+1, 0, 16);
usepwd = true;
cmdp += 2;
break;
case '1':
page1 = true;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = true;
break;
}
}
if (errors) return usage_t55xx_read();
if (block > 7 && block != REGULAR_READ_MODE_BLOCK ) {
PrintAndLog("Block must be between 0 and 7");
return 0;
}
PrintAndLog("Reading Page %d:", page1);
PrintAndLog("blk | hex data | binary");
return T55xxReadBlock(block, page1, usepwd, override, password);
}
bool DecodeT55xxBlock(){
char buf[30] = {0x00};
char *cmdStr = buf;
int ans = 0;
uint8_t bitRate[8] = {8,16,32,40,50,64,100,128};
DemodBufferLen = 0x00;
switch( config.modulation ){
case DEMOD_FSK:
snprintf(cmdStr, sizeof(buf),"%d %d", bitRate[config.bitrate], config.inverted );
ans = FSKrawDemod(cmdStr, FALSE);
break;
case DEMOD_FSK1:
case DEMOD_FSK1a:
snprintf(cmdStr, sizeof(buf),"%d %d 8 5", bitRate[config.bitrate], config.inverted );
ans = FSKrawDemod(cmdStr, FALSE);
break;
case DEMOD_FSK2:
case DEMOD_FSK2a:
snprintf(cmdStr, sizeof(buf),"%d %d 10 8", bitRate[config.bitrate], config.inverted );
ans = FSKrawDemod(cmdStr, FALSE);
break;
case DEMOD_ASK:
snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
ans = ASKDemod(cmdStr, FALSE, FALSE, 1);
break;
case DEMOD_PSK1:
// skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
CmdLtrim("160");
snprintf(cmdStr, sizeof(buf),"%d %d 6", bitRate[config.bitrate], config.inverted );
ans = PSKDemod(cmdStr, FALSE);
break;
case DEMOD_PSK2: //inverted won't affect this
case DEMOD_PSK3: //not fully implemented
// skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
CmdLtrim("160");
snprintf(cmdStr, sizeof(buf),"%d 0 6", bitRate[config.bitrate] );
ans = PSKDemod(cmdStr, FALSE);
psk1TOpsk2(DemodBuffer, DemodBufferLen);
break;
case DEMOD_NRZ:
snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
ans = NRZrawDemod(cmdStr, FALSE);
break;
case DEMOD_BI:
case DEMOD_BIa:
snprintf(cmdStr, sizeof(buf),"0 %d %d 1", bitRate[config.bitrate], config.inverted );
ans = ASKbiphaseDemod(cmdStr, FALSE);
break;
default:
return FALSE;
}
return (bool) ans;
}
int CmdT55xxDetect(const char *Cmd){
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
return usage_t55xx_detect();
if (strlen(Cmd)==0)
if ( !AquireData(0, CONFIGURATION_BLOCK, false, 0) )
return 0;
if ( !tryDetectModulation() )
PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
return 1;
}
// detect configuration?
bool tryDetectModulation(){
uint8_t hits = 0;
t55xx_conf_block_t tests[15];
int bitRate=0;
uint8_t fc1 = 0, fc2 = 0, clk=0;
save_restoreGB(1);
if (GetFskClock("", FALSE, FALSE)){
fskClocks(&fc1, &fc2, &clk, FALSE);
if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
tests[hits].modulation = DEMOD_FSK;
if (fc1==8 && fc2 == 5)
tests[hits].modulation = DEMOD_FSK1a;
else if (fc1==10 && fc2 == 8)
tests[hits].modulation = DEMOD_FSK2;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_FSK;
if (fc1 == 8 && fc2 == 5)
tests[hits].modulation = DEMOD_FSK1;
else if (fc1 == 10 && fc2 == 8)
tests[hits].modulation = DEMOD_FSK2a;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
} else {
clk = GetAskClock("", FALSE, FALSE);
if (clk>0) {
if ( ASKDemod("0 0 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_ASK;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( ASKDemod("0 1 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_ASK;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( ASKbiphaseDemod("0 0 0 2", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
tests[hits].modulation = DEMOD_BI;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( ASKbiphaseDemod("0 0 1 2", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
tests[hits].modulation = DEMOD_BIa;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
}
//undo trim from ask
save_restoreGB(0);
clk = GetNrzClock("", FALSE, FALSE);
if (clk>0) {
if ( NRZrawDemod("0 0 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_NRZ;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( NRZrawDemod("0 1 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_NRZ;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
}
//undo trim from nrz
save_restoreGB(0);
// skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
CmdLtrim("160");
clk = GetPskClock("", FALSE, FALSE);
if (clk>0) {
if ( PSKDemod("0 0 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_PSK1;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
if ( PSKDemod("0 1 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
tests[hits].modulation = DEMOD_PSK1;
tests[hits].bitrate = bitRate;
tests[hits].inverted = TRUE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
// PSK2 - needs a call to psk1TOpsk2.
if ( PSKDemod("0 0 6", FALSE)) {
psk1TOpsk2(DemodBuffer, DemodBufferLen);
if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
tests[hits].modulation = DEMOD_PSK2;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
} // inverse waves does not affect this demod
// PSK3 - needs a call to psk1TOpsk2.
if ( PSKDemod("0 0 6", FALSE)) {
psk1TOpsk2(DemodBuffer, DemodBufferLen);
if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
tests[hits].modulation = DEMOD_PSK3;
tests[hits].bitrate = bitRate;
tests[hits].inverted = FALSE;
tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
++hits;
}
} // inverse waves does not affect this demod
}
}
save_restoreGB(0);
if ( hits == 1) {
config.modulation = tests[0].modulation;
config.bitrate = tests[0].bitrate;
config.inverted = tests[0].inverted;
config.offset = tests[0].offset;
config.block0 = tests[0].block0;
printConfiguration( config );
return TRUE;
}
if ( hits > 1) {
PrintAndLog("Found [%d] possible matches for modulation.",hits);
for(int i=0; i<hits; ++i){
PrintAndLog("--[%d]---------------", i+1);
printConfiguration( tests[i] );
}
}
return FALSE;
}
bool testModulation(uint8_t mode, uint8_t modread){
switch( mode ){
case DEMOD_FSK:
if (modread >= DEMOD_FSK1 && modread <= DEMOD_FSK2a) return TRUE;
break;
case DEMOD_ASK:
if (modread == DEMOD_ASK) return TRUE;
break;
case DEMOD_PSK1:
if (modread == DEMOD_PSK1) return TRUE;
break;
case DEMOD_PSK2:
if (modread == DEMOD_PSK2) return TRUE;
break;
case DEMOD_PSK3:
if (modread == DEMOD_PSK3) return TRUE;
break;
case DEMOD_NRZ:
if (modread == DEMOD_NRZ) return TRUE;
break;
case DEMOD_BI:
if (modread == DEMOD_BI) return TRUE;
break;
case DEMOD_BIa:
if (modread == DEMOD_BIa) return TRUE;
break;
default:
return FALSE;
}
return FALSE;
}
bool testQ5Modulation(uint8_t mode, uint8_t modread){
switch( mode ){
case DEMOD_FSK:
if (modread >= 4 && modread <= 5) return TRUE;
break;
case DEMOD_ASK:
if (modread == 0) return TRUE;
break;
case DEMOD_PSK1:
if (modread == 1) return TRUE;
break;
case DEMOD_PSK2:
if (modread == 2) return TRUE;
break;
case DEMOD_PSK3:
if (modread == 3) return TRUE;
break;
case DEMOD_NRZ:
if (modread == 7) return TRUE;
break;
case DEMOD_BI:
if (modread == 6) return TRUE;
break;
default:
return FALSE;
}
return FALSE;
}
bool testQ5(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk){
if ( DemodBufferLen < 64 ) return FALSE;
uint8_t si = 0;
for (uint8_t idx = 28; idx < 64; idx++){
si = idx;
if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
uint8_t safer = PackBits(si, 4, DemodBuffer); si += 4; //master key
uint8_t resv = PackBits(si, 8, DemodBuffer); si += 8;
// 2nibble must be zeroed.
if (safer != 0x6) continue;
if ( resv > 0x00) continue;
//uint8_t pageSel = PackBits(si, 1, DemodBuffer); si += 1;
//uint8_t fastWrite = PackBits(si, 1, DemodBuffer); si += 1;
si += 1+1;
int bitRate = PackBits(si, 5, DemodBuffer)*2 + 2; si += 5; //bit rate
if (bitRate > 128 || bitRate < 8) continue;
//uint8_t AOR = PackBits(si, 1, DemodBuffer); si += 1;
//uint8_t PWD = PackBits(si, 1, DemodBuffer); si += 1;
//uint8_t pskcr = PackBits(si, 2, DemodBuffer); si += 2; //could check psk cr
//uint8_t inverse = PackBits(si, 1, DemodBuffer); si += 1;
si += 1+1+2+1;
uint8_t modread = PackBits(si, 3, DemodBuffer); si += 3;
uint8_t maxBlk = PackBits(si, 3, DemodBuffer); si += 3;
//uint8_t ST = PackBits(si, 1, DemodBuffer); si += 1;
if (maxBlk == 0) continue;
//test modulation
if (!testQ5Modulation(mode, modread)) continue;
if (bitRate != clk) continue;
*fndBitRate = bitRate;
*offset = idx;
return TRUE;
}
return FALSE;
}
bool testBitRate(uint8_t readRate, uint8_t clk){
uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
if (expected[readRate] == clk)
return true;
return false;
}
bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5){
if ( DemodBufferLen < 64 ) return FALSE;
uint8_t si = 0;
for (uint8_t idx = 28; idx < 64; idx++){
si = idx;
if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
uint8_t safer = PackBits(si, 4, DemodBuffer); si += 4; //master key
uint8_t resv = PackBits(si, 4, DemodBuffer); si += 4; //was 7 & +=7+3 //should be only 4 bits if extended mode
// 2nibble must be zeroed.
// moved test to here, since this gets most faults first.
if ( resv > 0x00) continue;
uint8_t xtRate = PackBits(si, 3, DemodBuffer); si += 3; //extended mode part of rate
int bitRate = PackBits(si, 3, DemodBuffer); si += 3; //bit rate
if (bitRate > 7) continue;
uint8_t extend = PackBits(si, 1, DemodBuffer); si += 1; //bit 15 extended mode
uint8_t modread = PackBits(si, 5, DemodBuffer); si += 5+2+1;
//uint8_t pskcr = PackBits(si, 2, DemodBuffer); si += 2+1; //could check psk cr
uint8_t nml01 = PackBits(si, 1, DemodBuffer); si += 1+5; //bit 24, 30, 31 could be tested for 0 if not extended mode
uint8_t nml02 = PackBits(si, 2, DemodBuffer); si += 2;
//if extended mode
bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? TRUE : FALSE;
if (!extMode){
if (nml01 || nml02 || xtRate) continue;
}
//test modulation
if (!testModulation(mode, modread)) continue;
if (!testBitRate(bitRate, clk)) continue;
*fndBitRate = bitRate;
*offset = idx;
*Q5 = FALSE;
return TRUE;
}
if (testQ5(mode, offset, fndBitRate, clk)) {
*Q5 = TRUE;
return TRUE;
}
return FALSE;
}
void printT55xxBlock(const char *blockNum){
uint8_t i = config.offset;
uint8_t endpos = 32 + i;
uint32_t blockData = 0;
uint8_t bits[64] = {0x00};
if ( !DemodBufferLen) return;
if ( endpos > DemodBufferLen){
PrintAndLog("The configured offset %d is too big. Possible offset: %d)", i, DemodBufferLen-32);
return;
}
for (; i < endpos; ++i)
bits[i - config.offset]=DemodBuffer[i];
blockData = PackBits(0, 32, bits);
PrintAndLog(" %s | %08X | %s", blockNum, blockData, sprint_bin(bits,32));
}
int special(const char *Cmd) {
uint32_t blockData = 0;
uint8_t bits[32] = {0x00};
PrintAndLog("OFFSET | DATA | BINARY");
PrintAndLog("----------------------------------------------------");
int i,j = 0;
for (; j < 64; ++j){
for (i = 0; i < 32; ++i)
bits[i]=DemodBuffer[j+i];
blockData = PackBits(0, 32, bits);
PrintAndLog(" %02d | 0x%08X | %s",j , blockData, sprint_bin(bits,32));
}
return 0;
}
int printConfiguration( t55xx_conf_block_t b){
PrintAndLog("Chip Type : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
PrintAndLog("Bit Rate : %s", GetBitRateStr(b.bitrate) );
PrintAndLog("Inverted : %s", (b.inverted) ? "Yes" : "No" );
PrintAndLog("Offset : %d", b.offset);
PrintAndLog("Block0 : 0x%08X", b.block0);
PrintAndLog("");
return 0;
}
int CmdT55xxWakeUp(const char *Cmd) {
uint32_t password = 0;
uint8_t cmdp = 0;
bool errors = true;
while(param_getchar(Cmd, cmdp) != 0x00) {
switch(param_getchar(Cmd, cmdp)) {
case 'h':
case 'H':
return usage_t55xx_wakup();
case 'p':
case 'P':
password = param_get32ex(Cmd, cmdp+1, 0xFFFFFFFF, 16);
cmdp += 2;
errors = false;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = true;
break;
}
}
if (errors) return usage_t55xx_wakup();
UsbCommand c = {CMD_T55XX_WAKEUP, {password, 0, 0}};
clearCommandBuffer();
SendCommand(&c);
PrintAndLog("Wake up command sent. Try read now");
return 0;
}
int CmdT55xxWriteBlock(const char *Cmd) {
uint8_t block = 0xFF; //default to invalid block
uint32_t data = 0xFFFFFFFF; //default to blank Block
uint32_t password = 0xFFFFFFFF; //default to blank Block 7
bool usepwd = false;
bool page1 = false;
bool gotdata = false;
bool errors = false;
uint8_t cmdp = 0;
while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
switch(param_getchar(Cmd, cmdp)) {
case 'h':
case 'H':
return usage_t55xx_write();
case 'b':
case 'B':
errors |= param_getdec(Cmd, cmdp+1, &block);
cmdp += 2;
break;
case 'd':
case 'D':
data = param_get32ex(Cmd, cmdp+1, 0, 16);
gotdata = true;
cmdp += 2;
break;
case 'p':
case 'P':
password = param_get32ex(Cmd, cmdp+1, 0, 16);
usepwd = true;
cmdp += 2;
break;
case '1':
page1 = true;
cmdp++;
break;
default:
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = true;
break;
}
}
if (errors || !gotdata) return usage_t55xx_write();
if (block > 7) {
PrintAndLog("Block number must be between 0 and 7");
return 0;
}
UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {data, block, 0}};
UsbCommand resp;
c.d.asBytes[0] = (page1) ? 0x2 : 0;
PrintAndLog("Writing to page: %d block: %d data : 0x%08X", page1, block, data);
//Password mode
if (usepwd) {
c.arg[2] = password;
c.d.asBytes[0] |= 0x1;
PrintAndLog("pwd : 0x%08X", password);
}
clearCommandBuffer();
SendCommand(&c);
if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
PrintAndLog("Error occurred, device did not ACK write operation. (May be due to old firmware)");
return 0;
}
return 1;
}
int CmdT55xxReadTrace(const char *Cmd) {
char cmdp = param_getchar(Cmd, 0);
bool pwdmode = false;
uint32_t password = 0;
if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
return usage_t55xx_trace();
if (strlen(Cmd)==0)
if ( !AquireData( TRACE_BLOCK, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
return 0;
if (!DecodeT55xxBlock()) return 0;
if ( !DemodBufferLen) return 0;
RepaintGraphWindow();
uint8_t repeat = 0;
if (config.offset > 5)
repeat = 32;
uint8_t si = config.offset+repeat;
uint32_t bl1 = PackBits(si, 32, DemodBuffer);
uint32_t bl2 = PackBits(si+32, 32, DemodBuffer);
uint32_t acl = PackBits(si, 8, DemodBuffer); si += 8;
uint32_t mfc = PackBits(si, 8, DemodBuffer); si += 8;
uint32_t cid = PackBits(si, 5, DemodBuffer); si += 5;
uint32_t icr = PackBits(si, 3, DemodBuffer); si += 3;
uint32_t year = PackBits(si, 4, DemodBuffer); si += 4;
uint32_t quarter = PackBits(si, 2, DemodBuffer); si += 2;
uint32_t lotid = PackBits(si, 14, DemodBuffer); si += 14;
uint32_t wafer = PackBits(si, 5, DemodBuffer); si += 5;
uint32_t dw = PackBits(si, 15, DemodBuffer);
time_t t = time(NULL);
struct tm tm = *localtime(&t);
if ( year > tm.tm_year-110)
year += 2000;
else
year += 2010;
if (config.Q5) PrintAndLog("*** Warning *** Info read off a Q5 will not work as expected");
if ( acl != 0xE0 ) {
PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
return 0;
}
PrintAndLog("");
PrintAndLog("-- T55xx Trace Information ----------------------------------");
PrintAndLog("-------------------------------------------------------------");
PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1) : 0x%02X (%d)", acl, acl);
PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6) : 0x%02X (%d) - %s", mfc, mfc, getTagInfo(mfc));
PrintAndLog(" CID : 0x%02X (%d) - %s", cid, cid, GetModelStrFromCID(cid));
PrintAndLog(" ICR IC Revision : %d",icr );
PrintAndLog(" Manufactured");
PrintAndLog(" Year/Quarter : %d/%d",year, quarter);
PrintAndLog(" Lot ID : %d", lotid );
PrintAndLog(" Wafer number : %d", wafer);
PrintAndLog(" Die Number : %d", dw);
PrintAndLog("-------------------------------------------------------------");
PrintAndLog(" Raw Data - Page 1");
PrintAndLog(" Block 1 : 0x%08X %s", bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
PrintAndLog(" Block 2 : 0x%08X %s", bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
PrintAndLog("-------------------------------------------------------------");
/*
TRACE - BLOCK O
Bits Definition HEX
1-8 ACL Allocation class (ISO/IEC 15963-1) 0xE0
9-16 MFC Manufacturer ID (ISO/IEC 7816-6) 0x15 Atmel Corporation
17-21 CID 0x1 = Atmel ATA5577M1 0x2 = Atmel ATA5577M2
22-24 ICR IC revision
25-28 YEAR (BCD encoded) 9 (= 2009)
29-30 QUARTER 1,2,3,4
31-32 LOT ID
TRACE - BLOCK 1
1-12 LOT ID
13-17 Wafer number
18-32 DW, die number sequential
*/
return 0;
}
int CmdT55xxInfo(const char *Cmd){
/*
Page 0 Block 0 Configuration data.
Normal mode
Extended mode
*/
bool pwdmode = false;
uint32_t password = 0;
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
return usage_t55xx_info();
if (strlen(Cmd)==0)
if ( !AquireData( 0, CONFIGURATION_BLOCK, pwdmode, password ) )
return 1;
if (!DecodeT55xxBlock()) return 1;
if ( DemodBufferLen < 32) return 1;
uint8_t si = config.offset;
uint32_t bl0 = PackBits(si, 32, DemodBuffer);
uint32_t safer = PackBits(si, 4, DemodBuffer); si += 4;
uint32_t resv = PackBits(si, 7, DemodBuffer); si += 7;
uint32_t dbr = PackBits(si, 3, DemodBuffer); si += 3;
uint32_t extend = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t datamod = PackBits(si, 5, DemodBuffer); si += 5;
uint32_t pskcf = PackBits(si, 2, DemodBuffer); si += 2;
uint32_t aor = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t otp = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t maxblk = PackBits(si, 3, DemodBuffer); si += 3;
uint32_t pwd = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t sst = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t fw = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t inv = PackBits(si, 1, DemodBuffer); si += 1;
uint32_t por = PackBits(si, 1, DemodBuffer); si += 1;
if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");
PrintAndLog("");
PrintAndLog("-- T55xx Configuration & Tag Information --------------------");
PrintAndLog("-------------------------------------------------------------");
PrintAndLog(" Safer key : %s", GetSaferStr(safer));
PrintAndLog(" reserved : %d", resv);
PrintAndLog(" Data bit rate : %s", GetBitRateStr(dbr));
PrintAndLog(" eXtended mode : %s", (extend) ? "Yes - Warning":"No");
PrintAndLog(" Modulation : %s", GetModulationStr(datamod));
PrintAndLog(" PSK clock frequency : %d", pskcf);
PrintAndLog(" AOR - Answer on Request : %s", (aor) ? "Yes":"No");
PrintAndLog(" OTP - One Time Pad : %s", (otp) ? "Yes - Warning":"No" );
PrintAndLog(" Max block : %d", maxblk);
PrintAndLog(" Password mode : %s", (pwd) ? "Yes":"No");
PrintAndLog(" Sequence Start Terminator : %s", (sst) ? "Yes":"No");
PrintAndLog(" Fast Write : %s", (fw) ? "Yes":"No");
PrintAndLog(" Inverse data : %s", (inv) ? "Yes":"No");
PrintAndLog(" POR-Delay : %s", (por) ? "Yes":"No");
PrintAndLog("-------------------------------------------------------------");
PrintAndLog(" Raw Data - Page 0");
PrintAndLog(" Block 0 : 0x%08X %s", bl0, sprint_bin(DemodBuffer+config.offset,32) );
PrintAndLog("-------------------------------------------------------------");
return 0;
}
int CmdT55xxDump(const char *Cmd){
uint32_t password = 0;
char cmdp = param_getchar(Cmd, 0);
bool override = false;
if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_dump();
bool usepwd = ( strlen(Cmd) > 0);
if ( usepwd ){
password = param_get32ex(Cmd, 0, 0, 16);
if (param_getchar(Cmd, 1) =='o' )
override = true;
}
PrintAndLog("Reading Page 0:");
PrintAndLog("blk | hex data | binary");
for ( uint8_t i = 0; i <8; ++i){
T55xxReadBlock(i, 0, usepwd, override, password);
/*memset(s,0,sizeof(s));
if ( hasPwd ) {
if ( override ) {
sprintf(s,"b %d p %02x%02x%02x%02x o", i, pwd[0],pwd[1],pwd[2],pwd[3]);
} else {
sprintf(s,"b %d p %02x%02x%02x%02x", i, pwd[0],pwd[1],pwd[2],pwd[3]);
}
} else {
sprintf(s,"b %d", i);
}
CmdT55xxReadBlock(s);*/
}
PrintAndLog("Reading Page 1:");
PrintAndLog("blk | hex data | binary");
for ( uint8_t i = 0; i<4; i++){
T55xxReadBlock(i, 1, usepwd, override, password);
}
return 1;
}
int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
uint8_t arg0 = (page<<1) | pwdmode;
UsbCommand c = {CMD_T55XX_READ_BLOCK, {arg0, block, password}};
clearCommandBuffer();
SendCommand(&c);
if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
PrintAndLog("command execution time out");
return 0;
}
uint8_t got[12000];
GetFromBigBuf(got,sizeof(got),0);
WaitForResponse(CMD_ACK,NULL);
setGraphBuf(got, sizeof(got));
return 1;
}
char * GetBitRateStr(uint32_t id){
static char buf[25];
char *retStr = buf;
switch (id){
case 0:
snprintf(retStr,sizeof(buf),"%d - RF/8",id);
break;
case 1:
snprintf(retStr,sizeof(buf),"%d - RF/16",id);
break;
case 2:
snprintf(retStr,sizeof(buf),"%d - RF/32",id);
break;
case 3:
snprintf(retStr,sizeof(buf),"%d - RF/40",id);
break;
case 4:
snprintf(retStr,sizeof(buf),"%d - RF/50",id);
break;
case 5:
snprintf(retStr,sizeof(buf),"%d - RF/64",id);
break;
case 6:
snprintf(retStr,sizeof(buf),"%d - RF/100",id);
break;
case 7:
snprintf(retStr,sizeof(buf),"%d - RF/128",id);
break;
default:
snprintf(retStr,sizeof(buf),"%d - (Unknown)",id);
break;
}
return buf;
}
char * GetSaferStr(uint32_t id){
static char buf[40];
char *retStr = buf;
snprintf(retStr,sizeof(buf),"%d",id);
if (id == 6) {
snprintf(retStr,sizeof(buf),"%d - passwd",id);
}
if (id == 9 ){
snprintf(retStr,sizeof(buf),"%d - testmode",id);
}
return buf;
}
char * GetModulationStr( uint32_t id){
static char buf[60];
char *retStr = buf;
switch (id){
case 0:
snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id);
break;
case 1:
snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id);
break;
case 2:
snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id);
break;
case 3:
snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id);
break;
case 4:
snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8 RF/5",id);
break;
case 5:
snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8 RF/10",id);
break;
case 6:
snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5 RF/8",id);
break;
case 7:
snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10 RF/8",id);
break;
case 8:
snprintf(retStr,sizeof(buf),"%d - Manchester",id);
break;
case 16:
snprintf(retStr,sizeof(buf),"%d - Biphase",id);
break;
case 0x18:
snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id);
break;
case 17:
snprintf(retStr,sizeof(buf),"%d - Reserved",id);
break;
default:
snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id);
break;
}
return buf;
}
char * GetModelStrFromCID(uint32_t cid){
static char buf[10];
char *retStr = buf;
if (cid == 1) snprintf(retStr, sizeof(buf),"ATA5577M1");
if (cid == 2) snprintf(retStr, sizeof(buf),"ATA5577M2");
return buf;
}
char * GetSelectedModulationStr( uint8_t id){
static char buf[20];
char *retStr = buf;
switch (id){
case DEMOD_FSK:
snprintf(retStr,sizeof(buf),"FSK");
break;
case DEMOD_FSK1:
snprintf(retStr,sizeof(buf),"FSK1");
break;
case DEMOD_FSK1a:
snprintf(retStr,sizeof(buf),"FSK1a");
break;
case DEMOD_FSK2:
snprintf(retStr,sizeof(buf),"FSK2");
break;
case DEMOD_FSK2a:
snprintf(retStr,sizeof(buf),"FSK2a");
break;
case DEMOD_ASK:
snprintf(retStr,sizeof(buf),"ASK");
break;
case DEMOD_NRZ:
snprintf(retStr,sizeof(buf),"DIRECT/NRZ");
break;
case DEMOD_PSK1:
snprintf(retStr,sizeof(buf),"PSK1");
break;
case DEMOD_PSK2:
snprintf(retStr,sizeof(buf),"PSK2");
break;
case DEMOD_PSK3:
snprintf(retStr,sizeof(buf),"PSK3");
break;
case DEMOD_BI:
snprintf(retStr,sizeof(buf),"BIPHASE");
break;
case DEMOD_BIa:
snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)");
break;
default:
snprintf(retStr,sizeof(buf),"(Unknown)");
break;
}
return buf;
}
uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits){
int i = start;
int j = len-1;
if (len > 32) return 0;
uint32_t tmp = 0;
for (; j >= 0; --j, ++i)
tmp |= bits[i] << j;
return tmp;
}
int CmdResetRead(const char *Cmd) {
UsbCommand c = {CMD_T55XX_RESET_READ, {0,0,0}};
clearCommandBuffer();
SendCommand(&c);
if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
PrintAndLog("command execution time out");
return 0;
}
uint8_t got[BIGBUF_SIZE-1];
GetFromBigBuf(got,sizeof(got),0);
WaitForResponse(CMD_ACK,NULL);
setGraphBuf(got, sizeof(got));
return 1;
}
int CmdT55xxWipe(const char *Cmd) {
char writeData[20] = {0};
char *ptrData = writeData;
uint8_t blk = 0;
PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
//try with the default password to reset block 0 (with a pwd should work even if pwd bit not set)
snprintf(ptrData,sizeof(writeData),"b %d d 00088040 p 0", blk);
if (!CmdT55xxWriteBlock(ptrData)){
PrintAndLog("Error writing blk %d", blk);
}
blk = 1;
for (; blk<8; blk++) {
snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);
if (!CmdT55xxWriteBlock(ptrData)){
PrintAndLog("Error writing blk %d", blk);
}
}
return 0;
}
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
{"config", CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
{"detect", CmdT55xxDetect, 0, "[1] Try detecting the tag modulation from reading the configuration block."},
{"read", CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
{"resetread",CmdResetRead, 0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
{"write", CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
{"trace", CmdT55xxReadTrace, 0, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},
{"info", CmdT55xxInfo, 0, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
{"dump", CmdT55xxDump, 0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
{"special", special, 0, "Show block changes with 64 different offsets"},
{"wakeup", CmdT55xxWakeUp, 0, "Send AOR wakeup command"},
{"wipe", CmdT55xxWipe, 0, "Wipe a T55xx tag and set defaults (will destroy any data on tag)"},
{NULL, NULL, 0, NULL}
};
int CmdLFT55XX(const char *Cmd)
{
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd)
{
CmdsHelp(CommandTable);
return 0;
}
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