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https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-20 15:26:13 +08:00
ADD: @marshmello42 's fixes for low frequency demodulation lengths greater the 512bits.
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@ -34,6 +34,7 @@ of stream transmissions (marshmellow)
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- Added option c to 'hf list' (mark CRC bytes) (piwi)
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### Changed
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- Added `[l] <length>` option to data printdemodbuffer
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- Adjusted lf awid clone to optionally clone to Q5 tags
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- Adjusted lf t55xx detect to find Q5 tags (t5555) instead of just t55x7
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- Adjusted all lf NRZ demods - works more acurately and consistantly (as long as you have strong signal)
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@ -58,11 +58,12 @@ int CmdSetDebugMode(const char *Cmd)
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}
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int usage_data_printdemodbuf(){
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PrintAndLog("Usage: data printdemodbuffer x o <offset>");
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PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" x output in hex (omit for binary output)");
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PrintAndLog(" o <offset> enter offset in # of bits");
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PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
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return 0;
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}
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@ -87,7 +88,8 @@ int CmdPrintDemodBuff(const char *Cmd)
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char hex[512]={0x00};
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bool hexMode = false;
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bool errors = false;
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uint8_t offset = 0;
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uint32_t offset = 0; //could be size_t but no param_get16...
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uint32_t length = 512;
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char cmdp = 0;
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while(param_getchar(Cmd, cmdp) != 0x00)
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{
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@ -103,10 +105,16 @@ int CmdPrintDemodBuff(const char *Cmd)
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break;
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case 'o':
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case 'O':
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offset = param_get8(Cmd, cmdp+1);
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offset = param_get32ex(Cmd, cmdp+1, 0, 10);
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if (!offset) errors = true;
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cmdp += 2;
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break;
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case 'l':
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case 'L':
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length = param_get32ex(Cmd, cmdp+1, 512, 10);
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if (!length) errors = true;
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cmdp += 2;
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break;
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default:
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PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
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errors = true;
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@ -116,11 +124,12 @@ int CmdPrintDemodBuff(const char *Cmd)
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}
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//Validations
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if(errors) return usage_data_printdemodbuf();
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int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
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length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
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int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
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if (hexMode){
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char *buf = (char *) (DemodBuffer + offset);
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numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
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numBits = binarraytohex(hex, buf, numBits);
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if (numBits==0) return 0;
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PrintAndLog("DemodBuffer: %s",hex);
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@ -313,7 +322,7 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
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char amp = param_getchar(Cmd, 0);
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uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
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sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &);
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if (!maxLen) maxLen = 512*64;
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if (!maxLen) maxLen = BIGBUF_SIZE;
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if (invert != 0 && invert != 1) {
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PrintAndLog("Invalid argument: %s", Cmd);
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return 0;
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@ -955,21 +964,20 @@ int FSKrawDemod(const char *Cmd, bool verbose)
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if (BitLen==0) return 0;
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//get field clock lengths
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uint16_t fcs=0;
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if (fchigh==0 || fclow == 0){
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if (!fchigh || !fclow) {
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fcs = countFC(BitStream, BitLen, 1);
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if (fcs==0){
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if (!fcs) {
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fchigh = 10;
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fclow = 8;
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} else {
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fchigh = (fcs >> 8) & 0xFF;
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fclow = fcs & 0xFF;
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fchigh = (fcs >> 8) & 0x00FF;
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fclow = fcs & 0x00FF;
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}
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}
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//get bit clock length
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if (rfLen == 0){
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if (!rfLen){
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rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
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if (rfLen == 0) rfLen = 50;
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if (!rfLen) rfLen = 50;
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}
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int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
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if (size > 0){
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@ -977,10 +985,11 @@ int FSKrawDemod(const char *Cmd, bool verbose)
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// Now output the bitstream to the scrollback by line of 16 bits
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if (verbose || g_debugMode) {
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PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%u", rfLen, invert, fchigh, fclow);
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PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", rfLen, invert, fchigh, fclow);
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PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
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printDemodBuff();
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}
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return 1;
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} else {
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if (g_debugMode) PrintAndLog("no FSK data found");
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@ -2392,7 +2401,7 @@ static command_t CommandTable[] =
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{"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
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{"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
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{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
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{"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
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{"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
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{"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
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{"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
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{"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
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@ -9,6 +9,7 @@
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//-----------------------------------------------------------------------------
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#include "util.h"
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#define MAX_BIN_BREAK_LENGTH (3072+384+1)
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#ifndef _WIN32
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#include <termios.h>
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@ -122,17 +123,26 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
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}
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char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
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int maxLen = ( len > 1020) ? 1020 : len;
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static char buf[1024];
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memset(buf, 0x00, 1024);
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// make sure we don't go beyond our char array memory
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int max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
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static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits
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//clear memory
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memset(buf, 0x00, sizeof(buf));
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char *tmp = buf;
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for (size_t i=0; i < maxLen; ++i){
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sprintf(tmp++, "%u", data[i]);
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if (breaks > 0 && !((i+1) % breaks))
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size_t in_index = 0;
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// loop through the out_index to make sure we don't go too far
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for (size_t out_index=0; out_index < max_len; out_index++) {
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// set character
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sprintf(tmp++, "%u", data[in_index]);
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// check if a line break is needed
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if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) {
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// increment and print line break
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out_index++;
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sprintf(tmp++, "%s","\n");
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}
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in_index++;
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}
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return buf;
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}
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@ -171,7 +181,8 @@ void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) {
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// hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
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// up to 64 bytes or 512 bits
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uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
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static uint8_t buf[64];
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//static uint8_t buf[64];
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uint8_t buf[64];
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memset(buf, 0x00, 64);
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uint8_t *tmp = buf;
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for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
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@ -300,7 +300,7 @@ int askdemod(uint8_t *BinStream, size_t *size, int *clk, int *invert, int maxErr
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uint8_t midBit = 0;
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uint8_t tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave
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if (*clk <= 32) tol = 1; //clock tolerance may not be needed anymore currently set to + or - 1 but could be increased for poor waves or removed entirely
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size_t MaxBits = 1024;
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size_t MaxBits = 3072;
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lastBit = start - *clk;
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for (i = start; i < *size; ++i) {
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