#include "cmddata.h"
#include "lfdemod.h"
uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
+uint8_t g_debugMode;
int DemodBufferLen;
static int CmdHelp(const char *Cmd);
//set the demod buffer with given array of binary (one bit per byte)
//by marshmellow
-void setDemodBuf(uint8_t *buff,int size)
+void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
{
- int i=0;
- for (; i < size; ++i){
- DemodBuffer[i]=buff[i];
+ size_t i = 0;
+ for (; i < size; i++){
+ DemodBuffer[i]=buff[startIdx++];
}
DemodBufferLen=size;
return;
}
+int CmdSetDebugMode(const char *Cmd)
+{
+ int demod=0;
+ sscanf(Cmd, "%i", &demod);
+ g_debugMode=(uint8_t)demod;
+ return 1;
+}
+
//by marshmellow
void printDemodBuff()
{
{
if (id !=0){
uint64_t iii=1;
- uint64_t id2lo=0; //id2hi=0,
+ uint64_t id2lo=0;
uint32_t ii=0;
uint32_t i=0;
for (ii=5; ii>0;ii--){
}
//output em id
PrintAndLog("EM TAG ID : %010llx", id);
- PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi,
+ PrintAndLog("Unique TAG ID: %010llx", id2lo);
PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF);
PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
int CmdEm410xDecode(const char *Cmd)
{
uint64_t id=0;
- // uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- // uint32_t i=0;
- // i=getFromGraphBuf(BitStream);
- id = Em410xDecode(DemodBuffer,DemodBufferLen);
- printEM410x(id);
- if (id>0) return 1;
+ size_t size = DemodBufferLen, idx=0;
+ id = Em410xDecode(DemodBuffer, &size, &idx);
+ if (id>0){
+ setDemodBuf(DemodBuffer, size, idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: Printing demod buffer:");
+ printDemodBuff();
+ }
+ printEM410x(id);
+ return 1;
+ }
return 0;
}
//prints binary found and saves in graphbuffer for further commands
int Cmdaskmandemod(const char *Cmd)
{
- int invert=0;
+ int invert=0;
int clk=0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
sscanf(Cmd, "%i %i", &clk, &invert);
}
size_t BitLen = getFromGraphBuf(BitStream);
- // PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
+ if (g_debugMode==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
int errCnt=0;
errCnt = askmandemod(BitStream, &BitLen,&clk,&invert);
if (errCnt<0||BitLen<16){ //if fatal error (or -1)
- // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
+ if (g_debugMode==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
return 0;
}
PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
}
PrintAndLog("ASK/Manchester decoded bitstream:");
// Now output the bitstream to the scrollback by line of 16 bits
- setDemodBuf(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen,0);
printDemodBuff();
uint64_t lo =0;
- lo = Em410xDecode(BitStream,BitLen);
+ size_t idx=0;
+ lo = Em410xDecode(BitStream, &BitLen, &idx);
if (lo>0){
//set GraphBuffer for clone or sim command
+ setDemodBuf(BitStream, BitLen, idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
PrintAndLog("EM410x pattern found: ");
printEM410x(lo);
return 1;
}
- //if (BitLen>16) return 1;
return 0;
}
printBitStream(BitStream, size);
if (errCnt==0){
uint64_t id = 0;
- id = Em410xDecode(BitStream, size);
- if (id>0) setDemodBuf(BitStream, size);
- printEM410x(id);
+ size_t idx=0;
+ id = Em410xDecode(BitStream, &size, &idx);
+ if (id>0){
+ //need to adjust to set bitstream back to manchester encoded data
+ //setDemodBuf(BitStream, size, idx);
+
+ printEM410x(id);
+ }
}
return 1;
}
return 1;
}
-
//by marshmellow
//takes 2 arguments - clock and invert both as integers
//attempts to demodulate ask only
errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert);
if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
PrintAndLog("no data found");
+ if (g_debugMode==1) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
return 0;
}
PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
- //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum);
- //move BitStream back to DemodBuffer
- setDemodBuf(BitStream,BitLen);
+
+ //move BitStream back to DemodBuffer
+ setDemodBuf(BitStream,BitLen,0);
- //output
+ //output
if (errCnt>0){
PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
}
return 0;
}
+//by marshmellow
+//shift graph zero up or down based on input + or -
+int CmdGraphShiftZero(const char *Cmd)
+{
+
+ int shift=0;
+ //set options from parameters entered with the command
+ sscanf(Cmd, "%i", &shift);
+ int shiftedVal=0;
+ for(int i = 0; i<GraphTraceLen; i++){
+ shiftedVal=GraphBuffer[i]+shift;
+ if (shiftedVal>127)
+ shiftedVal=127;
+ else if (shiftedVal<-127)
+ shiftedVal=-127;
+ GraphBuffer[i]= shiftedVal;
+ }
+ CmdNorm("");
+ return 0;
+}
+
/* Print our clock rate */
// uses data from graphbuffer
int CmdDetectClockRate(const char *Cmd)
sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
- //rfLen=param_get8(Cmd, 0); //if rfLen option only is used
if (rfLen==1){
invert=1; //if invert option only is used
rfLen = 50;
int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
if (size>0){
PrintAndLog("FSK decoded bitstream:");
- setDemodBuf(BitStream,size);
+ setDemodBuf(BitStream,size,0);
// Now output the bitstream to the scrollback by line of 16 bits
if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
//get binary from fsk wave
- size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo);
- if (size<0){
- PrintAndLog("Error demoding fsk");
+ size_t idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
+ if (idx<0){
+ if (g_debugMode) PrintAndLog("DEBUG: Error demoding fsk");
+ return 0;
+ }
+ if (hi2==0 && hi==0 && lo==0) {
+ if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
return 0;
}
- if (hi2==0 && hi==0 && lo==0) return 0;
if (hi2 != 0){ //extra large HID tags
PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
(unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- setDemodBuf(BitStream,BitLen);
- return 1;
}
else { //standard HID tags <38 bits
- //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd
uint8_t fmtLen = 0;
uint32_t fc = 0;
uint32_t cardnum = 0;
PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
(unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
- setDemodBuf(BitStream,BitLen);
- return 1;
}
- return 0;
+ setDemodBuf(BitStream,BitLen,idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
+ return 1;
+}
+
+//by marshmellow (based on existing demod + holiman's refactor)
+//Paradox Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
+//print full Paradox Prox ID and some bit format details if found
+int CmdFSKdemodParadox(const char *Cmd)
+{
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint32_t hi2=0, hi=0, lo=0;
+
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t BitLen = getFromGraphBuf(BitStream);
+ //get binary from fsk wave
+ size_t idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
+ if (idx<0){
+ if (g_debugMode) PrintAndLog("DEBUG: Error demoding fsk");
+ return 0;
+ }
+ if (hi2==0 && hi==0 && lo==0){
+ if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
+ return 0;
+ }
+ uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
+ uint32_t cardnum = (lo>>10)&0xFFFF;
+
+ PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x",
+ hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF );
+ setDemodBuf(BitStream,BitLen,idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
+ printDemodBuff();
+ }
+ return 1;
}
+
//by marshmellow
//IO-Prox demod - FSK RF/64 with preamble of 000000001
//print ioprox ID and some format details
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
//set defaults
int idx=0;
- //something in graphbuffer
- if (GraphTraceLen < 65) return 0;
+ //something in graphbuffer?
+ if (GraphTraceLen < 65) {
+ if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
+ return 0;
+ }
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t BitLen = getFromGraphBuf(BitStream);
+
//get binary from fsk wave
- // PrintAndLog("DEBUG: got buff");
idx = IOdemodFSK(BitStream,BitLen);
if (idx<0){
- //PrintAndLog("Error demoding fsk");
+ if (g_debugMode==1) PrintAndLog("DEBUG: demoding fsk error: %d", idx);
return 0;
}
- // PrintAndLog("DEBUG: Got IOdemodFSK");
if (idx==0){
- //PrintAndLog("IO Prox Data not found - FSK Data:");
- //if (BitLen > 92) printBitStream(BitStream,92);
+ if (g_debugMode==1){
+ PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
+ if (BitLen > 92) printBitStream(BitStream,92);
+ }
return 0;
}
//Index map
//
//XSF(version)facility:codeone+codetwo (raw)
//Handle the data
- if (idx+64>BitLen) return 0;
+ if (idx+64>BitLen) {
+ if (g_debugMode==1) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
+ return 0;
+ }
PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
- int i;
- for (i=0;i<64;++i)
- DemodBuffer[i]=BitStream[idx++];
-
- DemodBufferLen=64;
- return 1;
+ setDemodBuf(BitStream,64,idx);
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
+ printDemodBuff();
+ }
+ return 1;
}
int CmdFSKdemodAWID(const char *Cmd)
{
- int verbose=1;
- sscanf(Cmd, "%i", &verbose);
+ //int verbose=1;
+ //sscanf(Cmd, "%i", &verbose);
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
//get binary from fsk wave
int idx = AWIDdemodFSK(BitStream, size);
if (idx<=0){
- if (verbose){
+ if (g_debugMode==1){
if (idx == -1)
- PrintAndLog("Error: not enough samples");
+ PrintAndLog("DEBUG: Error - not enough samples");
else if (idx == -2)
- PrintAndLog("Error: only noise found - no waves");
+ PrintAndLog("DEBUG: Error - only noise found - no waves");
else if (idx == -3)
- PrintAndLog("Error: problem during FSK demod");
+ PrintAndLog("DEBUG: Error - problem during FSK demod");
// else if (idx == -3)
// PrintAndLog("Error: thought we had a tag but the parity failed");
else if (idx == -4)
- PrintAndLog("Error: AWID preamble not found");
+ PrintAndLog("DEBUG: Error - AWID preamble not found");
+ else if (idx == -5)
+ PrintAndLog("DEBUG: Error - Second AWID preamble not found");
+ else
+ PrintAndLog("DEBUG: Error %d",idx);
}
return 0;
}
uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
+ setDemodBuf(BitStream,96,idx);
+
size = removeParity(BitStream, idx+8, 4, 1, 88);
if (size != 66){
- if (verbose) PrintAndLog("Error: at parity check-tag size does not match AWID format");
+ if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
return 0;
}
// ok valid card found!
PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
}
}
-
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
+ printDemodBuff();
+ }
//todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
-
return 1;
}
//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
int CmdFSKdemodPyramid(const char *Cmd)
{
-
- int verbose=1;
- sscanf(Cmd, "%i", &verbose);
-
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
size_t size = getFromGraphBuf(BitStream);
//get binary from fsk wave
int idx = PyramiddemodFSK(BitStream, size);
if (idx < 0){
- if (verbose){
+ if (g_debugMode==1){
if (idx == -5)
- PrintAndLog("Error: not enough samples");
+ PrintAndLog("DEBUG: Error - not enough samples");
else if (idx == -1)
- PrintAndLog("Error: only noise found - no waves");
+ PrintAndLog("DEBUG: Error - only noise found - no waves");
else if (idx == -2)
- PrintAndLog("Error: problem during FSK demod");
- //else if (idx == -3)
- // PrintAndLog("Error: thought we had a tag but the parity failed");
+ PrintAndLog("DEBUG: Error - problem during FSK demod");
+ else if (idx == -3)
+ PrintAndLog("DEBUG: Error - Second Pyramid preamble not found");
else if (idx == -4)
- PrintAndLog("Error: AWID preamble not found");
+ PrintAndLog("DEBUG: Error - Pyramid preamble not found");
+ else
+ PrintAndLog("DEBUG: Error - idx: %d",idx);
}
- PrintAndLog("idx: %d",idx);
return 0;
}
- //PrintAndLog("DEBUG: idx: %d",idx);
-
// Index map
// 0 10 20 30 40 50 60
// | | | | | | |
uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
+ setDemodBuf(BitStream,128,idx);
+
size = removeParity(BitStream, idx+8, 8, 1, 120);
if (size != 105){
- if (verbose) PrintAndLog("Error: at parity check-tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
+ if (g_debugMode==1) PrintAndLog("DEBUG: Error at parity check-tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
return 0;
}
// (26 bit format shown)
//find start bit to get fmtLen
- idx = 0;
int j;
for (j=0; j<size; j++){
- if(BitStream[idx+j]) break;
+ if(BitStream[j]) break;
}
uint8_t fmtLen = size-j-8;
uint32_t fc = 0;
fc = bytebits_to_byte(BitStream+73, 8);
cardnum = bytebits_to_byte(BitStream+81, 16);
code1 = bytebits_to_byte(BitStream+72,fmtLen);
- PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
+ PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
} else if (fmtLen==45){
fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
fc = bytebits_to_byte(BitStream+53, 10);
cardnum = bytebits_to_byte(BitStream+63, 32);
- PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
} else {
cardnum = bytebits_to_byte(BitStream+81, 16);
if (fmtLen>32){
//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
//code2 = bytebits_to_byte(BitStream+(size-32),32);
- PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
} else{
//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
- PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
}
}
//todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
-
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
+ printDemodBuff();
+ }
return 1;
}
return 0;
}
+//by marshmellow
+//attempt to detect the field clock and bit clock for FSK
int CmdFSKfcDetect(const char *Cmd)
{
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
return 0;
}
-int PSKnrzDemod(const char *Cmd){
+int PSKnrzDemod(const char *Cmd)
+{
int invert=0;
int clk=0;
sscanf(Cmd, "%i %i", &clk, &invert);
int errCnt=0;
errCnt = pskNRZrawDemod(BitStream, &BitLen,&clk,&invert);
if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
- //PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+ if (g_debugMode==1) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
return -1;
}
PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
//prime demod buffer for output
- setDemodBuf(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen,0);
return errCnt;
}
// Indala 26 bit decode
// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
int CmdIndalaDecode(const char *Cmd)
{
- uint8_t verbose = 1;
int ans;
if (strlen(Cmd)>0){
- if (Cmd[0]=='0'){
- verbose=0;
- ans = PSKnrzDemod("32");
- }else{
- ans = PSKnrzDemod(Cmd);
- }
+ ans = PSKnrzDemod(Cmd);
} else{ //default to RF/32
ans = PSKnrzDemod("32");
}
if (ans < 0){
- if (verbose)
+ if (g_debugMode==1)
PrintAndLog("Error1: %d",ans);
return 0;
}
uint8_t invert=0;
ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
if (ans < 1) {
- if (verbose)
+ if (g_debugMode==1)
PrintAndLog("Error2: %d",ans);
return -1;
}
char showbits[251];
if (invert)
- if (verbose)
+ if (g_debugMode==1)
PrintAndLog("Had to invert bits");
+
//convert UID to HEX
uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
int idx;
//prints binary found and saves in graphbuffer for further commands
int CmdpskNRZrawDemod(const char *Cmd)
{
- uint8_t verbose = 1;
int errCnt;
- if (strlen(Cmd)>0){
- if (Cmd[0]=='0')
- verbose=0;
- }
-
+
errCnt = PSKnrzDemod(Cmd);
//output
- if (errCnt<0) return 0;
+ if (errCnt<0){
+ if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);
+ return 0;
+ }
if (errCnt>0){
- if (verbose)
+ if (g_debugMode){
PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
- }
- PrintAndLog("PSK or NRZ demoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printDemodBuff();
-
- return 1;
+ PrintAndLog("PSK or NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+ }
+ }else{
+ PrintAndLog("PSK or NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+ return 1;
+ }
+ return 0;
}
int CmdGrid(const char *Cmd)
int CmdLoad(const char *Cmd)
{
- char filename[FILE_PATH_SIZE] = {0x00};
- int len = 0;
+ char filename[FILE_PATH_SIZE] = {0x00};
+ int len = 0;
- len = strlen(Cmd);
- if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
- memcpy(filename, Cmd, len);
+ len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
- FILE *f = fopen(filename, "r");
+ FILE *f = fopen(filename, "r");
if (!f) {
PrintAndLog("couldn't open '%s'", filename);
return 0;
RepaintGraphWindow();
return 0;
}
+
+// trim graph to input argument length
int CmdRtrim(const char *Cmd)
{
int ds = atoi(Cmd);
int CmdSave(const char *Cmd)
{
- char filename[FILE_PATH_SIZE] = {0x00};
- int len = 0;
+ char filename[FILE_PATH_SIZE] = {0x00};
+ int len = 0;
- len = strlen(Cmd);
- if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
- memcpy(filename, Cmd, len);
+ len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
FILE *f = fopen(filename, "w");
{"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK tag using raw"},
{"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox tag FSK using raw"},
{"fskpyramiddemod",CmdFSKdemodPyramid,1, "Demodulate graph window as a Pyramid FSK tag using raw"},
+ {"fskparadoxdemod",CmdFSKdemodParadox,1, "Demodulate graph window as a Paradox FSK tag using raw"},
{"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
{"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
{"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"},
{"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
{"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
+ {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
+ {"shiftgraphzero",CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
{"threshold", CmdThreshold, 1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
{"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
{"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
//by marshmellow
//takes 1s and 0s and searches for EM410x format - output EM ID
-uint64_t Em410xDecode(uint8_t *BitStream, size_t size)
+uint64_t Em410xDecode(uint8_t *BitStream, size_t *size, size_t *startIdx)
{
//no arguments needed - built this way in case we want this to be a direct call from "data " cmds in the future
// otherwise could be a void with no arguments
uint32_t idx = 0;
uint32_t ii=0;
uint8_t resetCnt = 0;
- while( (idx + 64) < size) {
+ while( (idx + 64) < *size) {
restart:
// search for a start of frame marker
if ( memcmp(BitStream+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
{ // frame marker found
+ *startIdx=idx;
idx+=9;
for (i=0; i<10;i++){
for(ii=0; ii<5; ++ii){
parityTest ^= BitStream[(i*5)+ii+idx];
}
- if (!parityTest){
+ if (!parityTest){ //even parity
parityTest=0;
for (ii=0; ii<4;++ii){
lo=(lo<<1LL)|(BitStream[(i*5)+ii+idx]);
}
}
//skip last 5 bit parity test for simplicity.
+ *size = 64;
return lo;
}else{
idx++;
int askmandemod(uint8_t *BinStream, size_t *size, int *clk, int *invert)
{
int i;
+ int clk2=*clk;
*clk=DetectASKClock(BinStream, *size, *clk); //clock default
- if (*clk<8) *clk =64;
- if (*clk<32) *clk=32;
+ // if autodetected too low then adjust //MAY NEED ADJUSTMENT
+ if (clk2==0 && *clk<8) *clk =64;
+ if (clk2==0 && *clk<32) *clk=32;
if (*invert != 0 && *invert != 1) *invert=0;
uint32_t initLoopMax = 200;
if (initLoopMax > *size) initLoopMax=*size;
int lastBit = 0; //set first clock check
uint32_t bitnum = 0; //output counter
int tol = 0; //clock tolerance adjust - waves will be accepted as within the clock if they fall + or - this value + clock from last valid wave
- 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
+ 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
int iii = 0;
uint32_t gLen = *size;
if (gLen > 3000) gLen=3000;
return bestErrCnt;
}
+//by marshmellow
+//encode binary data into binary manchester
+int ManchesterEncode(uint8_t *BitStream, size_t size)
+{
+ size_t modIdx=20000, i=0;
+ if (size>modIdx) return -1;
+ for (size_t idx=0; idx < size; idx++){
+ BitStream[idx+modIdx++] = BitStream[idx];
+ BitStream[idx+modIdx++] = BitStream[idx]^1;
+ }
+ for (; i<(size*2); i++){
+ BitStream[i] = BitStream[i+20000];
+ }
+ return i;
+}
+
//by marshmellow
//take 10 and 01 and manchester decode
//run through 2 times and take least errCnt
return errCnt;
}
-
//by marshmellow
//take 01 or 10 = 0 and 11 or 00 = 1
int BiphaseRawDecode(uint8_t *BitStream, size_t *size, int offset, int invert)
//uint8_t BitStream[502] = {0};
//HACK: if clock not detected correctly - default
- if (*clk<8) *clk =64;
- if (*clk<32 && clk2==0) *clk=32;
+ if (clk2==0 && *clk<8) *clk =64;
+ if (clk2==0 && *clk<32 && clk2==0) *clk=32;
if (*invert != 0 && *invert != 1) *invert =0;
uint32_t initLoopMax = 200;
if (initLoopMax > *size) initLoopMax=*size;
return size;
}
// loop to get raw HID waveform then FSK demodulate the TAG ID from it
-int HIDdemodFSK(uint8_t *dest, size_t size, uint32_t *hi2, uint32_t *hi, uint32_t *lo)
+int HIDdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo)
{
- size_t idx=0; //, found=0; //size=0,
+ size_t idx=0, size2=*size, startIdx=0;
// FSK demodulator
- size = fskdemod(dest, size,50,0,10,8);
+
+ *size = fskdemod(dest, size2,50,0,10,8);
// final loop, go over previously decoded manchester data and decode into usable tag ID
// 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0
int numshifts = 0;
idx = 0;
//one scan
- while( idx + sizeof(frame_marker_mask) < size) {
+ while( idx + sizeof(frame_marker_mask) < *size) {
// search for a start of frame marker
if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
{ // frame marker found
+ startIdx=idx;
idx+=sizeof(frame_marker_mask);
- while(dest[idx] != dest[idx+1] && idx < size-2)
+ while(dest[idx] != dest[idx+1] && idx < *size-2)
{
// Keep going until next frame marker (or error)
// Shift in a bit. Start by shifting high registers
idx += 2;
}
// Hopefully, we read a tag and hit upon the next frame marker
- if(idx + sizeof(frame_marker_mask) < size)
+ if(idx + sizeof(frame_marker_mask) < *size)
{
if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
{
//good return
- return idx;
+ *size=idx-startIdx;
+ return startIdx;
}
}
// reset
return -1;
}
+// loop to get raw paradox waveform then FSK demodulate the TAG ID from it
+size_t ParadoxdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32_t *lo)
+{
+
+ size_t idx=0, size2=*size;
+ // FSK demodulator
+
+ *size = fskdemod(dest, size2,50,1,10,8);
+
+ // final loop, go over previously decoded manchester data and decode into usable tag ID
+ // 00001111 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0
+ uint8_t frame_marker_mask[] = {0,0,0,0,1,1,1,1};
+ uint16_t numshifts = 0;
+ idx = 0;
+ //one scan
+ while( idx + sizeof(frame_marker_mask) < *size) {
+ // search for a start of frame marker
+ if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
+ { // frame marker found
+ size2=idx;
+ idx+=sizeof(frame_marker_mask);
+ while(dest[idx] != dest[idx+1] && idx < *size-2)
+ {
+ // Keep going until next frame marker (or error)
+ // Shift in a bit. Start by shifting high registers
+ *hi2 = (*hi2<<1)|(*hi>>31);
+ *hi = (*hi<<1)|(*lo>>31);
+ //Then, shift in a 0 or one into low
+ if (dest[idx] && !dest[idx+1]) // 1 0
+ *lo=(*lo<<1)|1;
+ else // 0 1
+ *lo=(*lo<<1)|0;
+ numshifts++;
+ idx += 2;
+ }
+ // Hopefully, we read a tag and hit upon the next frame marker and got enough bits
+ if(idx + sizeof(frame_marker_mask) < *size && numshifts > 40)
+ {
+ if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
+ {
+ //good return - return start grid position and bits found
+ *size = ((numshifts*2)+8);
+ return size2;
+ }
+ }
+ // reset
+ *hi2 = *hi = *lo = 0;
+ numshifts = 0;
+ }else {
+ idx++;
+ }
+ }
+ return 0;
+}
+
uint32_t bytebits_to_byte(uint8_t* src, size_t numbits)
{
uint32_t num = 0;
// by marshmellow
// pass bits to be tested in bits, length bits passed in bitLen, and parity type (even=0 | odd=1) in pType
// returns 1 if passed
-int parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType)
+uint8_t parityTest(uint32_t bits, uint8_t bitLen, uint8_t pType)
{
uint8_t ans = 0;
- for (int i = 0; i < bitLen; i++){
+ for (uint8_t i = 0; i < bitLen; i++){
ans ^= ((bits >> i) & 1);
}
//PrintAndLog("DEBUG: ans: %d, ptype: %d",ans,pType);
int AWIDdemodFSK(uint8_t *dest, size_t size)
{
static const uint8_t THRESHOLD = 123;
- uint32_t idx=0;
+ uint32_t idx=0, idx2=0;
//make sure buffer has data
if (size < 96*50) return -1;
//test samples are not just noise
for( idx=0; idx < (size - 96); idx++) {
if ( memcmp(dest + idx, mask, sizeof(mask))==0) {
// frame marker found
- //return ID start index and size
- return idx;
- //size should always be 96
+ //return ID start index
+ if (idx2 == 0) idx2=idx;
+ else if(idx-idx2==96) return idx2;
+ else return -5;
+
+ // should always get 96 bits if it is awid
}
}
//never found mask
int PyramiddemodFSK(uint8_t *dest, size_t size)
{
static const uint8_t THRESHOLD = 123;
- uint32_t idx=0;
- // size_t size2 = size;
+ uint32_t idx=0, idx2=0;
+ // size_t size2 = size;
//make sure buffer has data
if (size < 128*50) return -5;
//test samples are not just noise
for( idx=0; idx < (size - 128); idx++) {
if ( memcmp(dest + idx, mask, sizeof(mask))==0) {
// frame marker found
- return idx;
+ if (idx2==0) idx2=idx;
+ else if (idx-idx2==128) return idx2;
+ else return -3;
}
}
//never found mask
return -4;
}
+
// by marshmellow
// not perfect especially with lower clocks or VERY good antennas (heavy wave clipping)
// maybe somehow adjust peak trimming value based on samples to fix?
int DetectASKClock(uint8_t dest[], size_t size, int clock)
{
- int i=0;
- int clk[]={8,16,32,40,50,64,100,128,256};
- int loopCnt = 256; //don't need to loop through entire array...
- if (size<loopCnt) loopCnt = size;
+ int i=0;
+ int clk[]={8,16,32,40,50,64,100,128,256};
+ int loopCnt = 256; //don't need to loop through entire array...
+ if (size<loopCnt) loopCnt = size;
- //if we already have a valid clock quit
-
- for (;i<8;++i)
- if (clk[i] == clock) return clock;
+ //if we already have a valid clock quit
+
+ for (;i<8;++i)
+ if (clk[i] == clock) return clock;
- //get high and low peak
- int peak, low;
- getHiLo(dest, loopCnt, &peak, &low, 75, 75);
-
- int ii;
- int clkCnt;
- int tol = 0;
- int bestErr[]={1000,1000,1000,1000,1000,1000,1000,1000,1000};
- int errCnt=0;
- //test each valid clock from smallest to greatest to see which lines up
- for(clkCnt=0; clkCnt < 6; ++clkCnt){
- if (clk[clkCnt] == 32){
- tol=1;
- }else{
- tol=0;
- }
- bestErr[clkCnt]=1000;
- //try lining up the peaks by moving starting point (try first 256)
- for (ii=0; ii< loopCnt; ++ii){
- if ((dest[ii] >= peak) || (dest[ii] <= low)){
- errCnt=0;
- // now that we have the first one lined up test rest of wave array
- for (i=0; i<((int)(size/clk[clkCnt])-1); ++i){
- if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){
- }else if(dest[ii+(i*clk[clkCnt])-tol]>=peak || dest[ii+(i*clk[clkCnt])-tol]<=low){
- }else if(dest[ii+(i*clk[clkCnt])+tol]>=peak || dest[ii+(i*clk[clkCnt])+tol]<=low){
- }else{ //error no peak detected
- errCnt++;
- }
- }
- //if we found no errors this is correct one - return this clock
- if(errCnt==0) return clk[clkCnt];
- //if we found errors see if it is lowest so far and save it as best run
- if(errCnt<bestErr[clkCnt]) bestErr[clkCnt]=errCnt;
- }
- }
- }
- int iii=0;
- int best=0;
- for (iii=0; iii<8;++iii){
- if (bestErr[iii]<bestErr[best]){
- // current best bit to error ratio vs new bit to error ratio
- if (((size/clk[best])/bestErr[best] < (size/clk[iii])/bestErr[iii]) ){
- best = iii;
- }
- }
- }
- return clk[best];
+ //get high and low peak
+ int peak, low;
+ getHiLo(dest, loopCnt, &peak, &low, 75, 75);
+
+ int ii;
+ int clkCnt;
+ int tol = 0;
+ int bestErr[]={1000,1000,1000,1000,1000,1000,1000,1000,1000};
+ int errCnt=0;
+ //test each valid clock from smallest to greatest to see which lines up
+ for(clkCnt=0; clkCnt < 8; ++clkCnt){
+ if (clk[clkCnt] == 32){
+ tol=1;
+ }else{
+ tol=0;
+ }
+ bestErr[clkCnt]=1000;
+ //try lining up the peaks by moving starting point (try first 256)
+ for (ii=0; ii < loopCnt; ++ii){
+ if ((dest[ii] >= peak) || (dest[ii] <= low)){
+ errCnt=0;
+ // now that we have the first one lined up test rest of wave array
+ for (i=0; i<((int)((size-ii-tol)/clk[clkCnt])-1); ++i){
+ if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){
+ }else if(dest[ii+(i*clk[clkCnt])-tol]>=peak || dest[ii+(i*clk[clkCnt])-tol]<=low){
+ }else if(dest[ii+(i*clk[clkCnt])+tol]>=peak || dest[ii+(i*clk[clkCnt])+tol]<=low){
+ }else{ //error no peak detected
+ errCnt++;
+ }
+ }
+ //if we found no errors then we can stop here
+ // this is correct one - return this clock
+ //PrintAndLog("DEBUG: clk %d, err %d, ii %d, i %d",clk[clkCnt],errCnt,ii,i);
+ if(errCnt==0 && clkCnt<6) return clk[clkCnt];
+ //if we found errors see if it is lowest so far and save it as best run
+ if(errCnt<bestErr[clkCnt]) bestErr[clkCnt]=errCnt;
+ }
+ }
+ }
+ uint8_t iii=0;
+ uint8_t best=0;
+ for (iii=0; iii<8; ++iii){
+ if (bestErr[iii]<bestErr[best]){
+ if (bestErr[iii]==0) bestErr[iii]=1;
+ // current best bit to error ratio vs new bit to error ratio
+ if (((size/clk[best])/bestErr[best] < (size/clk[iii])/bestErr[iii]) ){
+ best = iii;
+ }
+ }
+ }
+ return clk[best];
}
+
//by marshmellow
//detect psk clock by reading #peaks vs no peaks(or errors)
int DetectpskNRZClock(uint8_t dest[], size_t size, int clock)
if (size<loopCnt) loopCnt = size;
//if we already have a valid clock quit
- for (; i < 8; ++i)
+ for (; i < 7; ++i)
if (clk[i] == clock) return clock;
//get high and low peak
uint8_t tol = 0;
int peakcnt=0;
int errCnt=0;
- int bestErr[]={1000,1000,1000,1000,1000,1000,1000,1000,1000};
- int peaksdet[]={0,0,0,0,0,0,0,0,0};
+ int bestErr[]={1000,1000,1000,1000,1000,1000,1000,1000};
+ int peaksdet[]={0,0,0,0,0,0,0,0};
//test each valid clock from smallest to greatest to see which lines up
- for(clkCnt=0; clkCnt < 6; ++clkCnt){
- if (clk[clkCnt] >= 32){
+ for(clkCnt=0; clkCnt < 7; ++clkCnt){
+ if (clk[clkCnt] <= 32){
tol=1;
}else{
tol=0;
errCnt=0;
peakcnt=0;
// now that we have the first one lined up test rest of wave array
- for (i=0; i < ((int)(size/clk[clkCnt])-1); ++i){
+ for (i=0; i < ((int)((size-ii-tol)/clk[clkCnt])-1); ++i){
if (dest[ii+(i*clk[clkCnt])]>=peak || dest[ii+(i*clk[clkCnt])]<=low){
peakcnt++;
}else if(dest[ii+(i*clk[clkCnt])-tol]>=peak || dest[ii+(i*clk[clkCnt])-tol]<=low){
projects / proxmark3-svn / commitdiff