X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/dc0bd4169f4517879c86918717ccef07da930e93..3d542a3dfa511ff7a7545136c1980060cf676f02:/client/cmddata.c?ds=sidebyside diff --git a/client/cmddata.c b/client/cmddata.c index 1924e5f7..c12c2ce6 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -22,16 +22,14 @@ #include "cmdparser.h"// already included in cmdmain.h #include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h #include "lfdemod.h" // for demod code -#include "crc.h" // for pyramid checksum maxim -#include "crc16.h" // for FDXB demod checksum #include "loclass/cipherutils.h" // for decimating samples in getsamples #include "cmdlfem4x.h"// for em410x demod uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN]; uint8_t g_debugMode=0; size_t DemodBufferLen=0; -//size_t g_demodStartIdx=0; -//uint8_t g_demodClock=0; +int g_DemodStartIdx=0; +int g_DemodClock=0; static int CmdHelp(const char *Cmd); @@ -42,8 +40,8 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx) if (buff == NULL) return; - if ( size >= MAX_DEMOD_BUF_LEN) - size = MAX_DEMOD_BUF_LEN; + if ( size > MAX_DEMOD_BUF_LEN - startIdx) + size = MAX_DEMOD_BUF_LEN - startIdx; size_t i = 0; for (; i < size; i++){ @@ -53,6 +51,42 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx) return; } +bool getDemodBuf(uint8_t *buff, size_t *size) { + if (buff == NULL) return false; + if (size == NULL) return false; + if (*size == 0) return false; + + *size = (*size > DemodBufferLen) ? DemodBufferLen : *size; + + memcpy(buff, DemodBuffer, *size); + return true; +} + +// option '1' to save DemodBuffer any other to restore +void save_restoreDB(uint8_t saveOpt) +{ + static uint8_t SavedDB[MAX_DEMOD_BUF_LEN]; + static size_t SavedDBlen; + static bool DB_Saved = false; + static int savedDemodStartIdx = 0; + static int savedDemodClock = 0; + + if (saveOpt == GRAPH_SAVE) { //save + + memcpy(SavedDB, DemodBuffer, sizeof(DemodBuffer)); + SavedDBlen = DemodBufferLen; + DB_Saved=true; + savedDemodStartIdx = g_DemodStartIdx; + savedDemodClock = g_DemodClock; + } else if (DB_Saved) { //restore + memcpy(DemodBuffer, SavedDB, sizeof(DemodBuffer)); + DemodBufferLen = SavedDBlen; + g_DemodClock = savedDemodClock; + g_DemodStartIdx = savedDemodStartIdx; + } + return; +} + int CmdSetDebugMode(const char *Cmd) { int demod=0; @@ -195,15 +229,21 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, } bool st = false; size_t ststart = 0, stend = 0; - if (*stCheck) st = DetectST_ext(BitStream, &BitLen, &foundclk, &ststart, &stend); + if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk, &ststart, &stend); + *stCheck = st; if (st) { - *stCheck = st; clk = (clk == 0) ? foundclk : clk; CursorCPos = ststart; CursorDPos = stend; if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers"); - } - int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType); + //Graph ST trim (for testing) + //for (int i = 0; i < BitLen; i++) { + // GraphBuffer[i] = BitStream[i]-128; + //} + //RepaintGraphWindow(); + } + int startIdx = 0; + int errCnt = askdemod_ext(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType, &startIdx); if (errCnt<0 || BitLen<16){ //if fatal error (or -1) if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk); return 0; @@ -213,9 +253,10 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, return 0; } if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen); - //output setDemodBuf(BitStream,BitLen,0); + setClockGrid(clk, startIdx); + if (verbose || g_debugMode){ if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk); @@ -261,11 +302,11 @@ int Cmdaskmandemod(const char *Cmd) } bool st = true; if (Cmd[0]=='s') - return ASKDemod_ext(Cmd++, true, true, 1, &st); + return ASKDemod_ext(Cmd++, true, false, 1, &st); else if (Cmd[1] == 's') - return ASKDemod_ext(Cmd+=2, true, true, 1, &st); + return ASKDemod_ext(Cmd+=2, true, false, 1, &st); else - return ASKDemod(Cmd, true, true, 1); + return ASKDemod(Cmd, true, false, 1); } //by marshmellow @@ -290,7 +331,7 @@ int Cmdmandecoderaw(const char *Cmd) return 0; } if (DemodBufferLen==0) return 0; - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0}; int high=0,low=0; for (;ihigh) high=DemodBuffer[i]; @@ -352,14 +393,14 @@ int CmdBiphaseDecodeRaw(const char *Cmd) return 0; } sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr); - if (DemodBufferLen==0){ + if (DemodBufferLen==0) { PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first"); return 0; } - uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; - memcpy(BitStream, DemodBuffer, DemodBufferLen); - size = DemodBufferLen; - errCnt=BiphaseRawDecode(BitStream, &size, offset, invert); + uint8_t BitStream[MAX_DEMOD_BUF_LEN]={0}; + size = sizeof(BitStream); + if ( !getDemodBuf(BitStream, &size) ) return 0; + errCnt=BiphaseRawDecode(BitStream, &size, &offset, invert); if (errCnt<0){ PrintAndLog("Error during decode:%d", errCnt); return 0; @@ -372,10 +413,12 @@ int CmdBiphaseDecodeRaw(const char *Cmd) if (errCnt>0){ PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt); } + PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert); PrintAndLog("%s", sprint_bin_break(BitStream, size, 16)); if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod + setClockGrid(g_DemodClock, g_DemodStartIdx + g_DemodClock*offset/2); return 1; } @@ -387,27 +430,29 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose) int offset=0, clk=0, invert=0, maxErr=0; sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); - uint8_t BitStream[MAX_DEMOD_BUF_LEN]; - size_t size = getFromGraphBuf(BitStream); + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; + size_t size = getFromGraphBuf(BitStream); + int startIdx = 0; //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer - int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0); + int errCnt = askdemod_ext(BitStream, &size, &clk, &invert, maxErr, 0, 0, &startIdx); if ( errCnt < 0 || errCnt > maxErr ) { if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); return 0; - } + } //attempt to Biphase decode BitStream - errCnt = BiphaseRawDecode(BitStream, &size, offset, invert); + errCnt = BiphaseRawDecode(BitStream, &size, &offset, invert); if (errCnt < 0){ if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); return 0; - } + } if (errCnt > maxErr) { if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt); return 0; } //success set DemodBuffer and return setDemodBuf(BitStream, size, 0); + setClockGrid(clk, startIdx + clk*offset/2); if (g_debugMode || verbose){ PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt); printDemodBuff(); @@ -444,99 +489,6 @@ int Cmdaskbiphdemod(const char *Cmd) return ASKbiphaseDemod(Cmd, true); } -//could be split to a gProxII file -//by marshmellow -//attempts to demodulate and identify a G_Prox_II verex/chubb card -//WARNING: if it fails during some points it will destroy the DemodBuffer data -// but will leave the GraphBuffer intact. -//if successful it will push askraw data back to demod buffer ready for emulation -int CmdG_Prox_II_Demod(const char *Cmd) -{ - if (!ASKbiphaseDemod(Cmd, false)){ - if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try"); - return 0; - } - size_t size = DemodBufferLen; - //call lfdemod.c demod for gProxII - int ans = gProxII_Demod(DemodBuffer, &size); - if (ans < 0){ - if (g_debugMode) PrintAndLog("Error gProxII_Demod"); - return 0; - } - //got a good demod of 96 bits - uint8_t ByteStream[8] = {0x00}; - uint8_t xorKey=0; - size_t startIdx = ans + 6; //start after 6 bit preamble - - uint8_t bits_no_spacer[90]; - //so as to not mess with raw DemodBuffer copy to a new sample array - memcpy(bits_no_spacer, DemodBuffer + startIdx, 90); - // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72)) - size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run - if (bitLen != 72) { - if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx); - return 0; - } - // get key and then get all 8 bytes of payload decoded - xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8); - for (size_t idx = 0; idx < 8; idx++) { - ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey; - if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]); - } - //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data - // - uint8_t fmtLen = ByteStream[0]>>2; - uint32_t FC = 0; - uint32_t Card = 0; - //get raw 96 bits to print - uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32); - uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); - uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32); - - if (fmtLen==36){ - FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1); - Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5); - PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); - } else if(fmtLen==26){ - FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7); - Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7); - PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card); - } else { - PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen); - PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8)); - } - PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3); - setDemodBuf(DemodBuffer+ans, 96, 0); - return 1; -} - -//could be moved to a viking file -//by marshmellow -//see ASKDemod for what args are accepted -int CmdVikingDemod(const char *Cmd) -{ - if (!ASKDemod(Cmd, false, false, 1)) { - if (g_debugMode) PrintAndLog("ASKDemod failed"); - return 0; - } - size_t size = DemodBufferLen; - //call lfdemod.c demod for Viking - int ans = VikingDemod_AM(DemodBuffer, &size); - if (ans < 0) { - if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans); - return 0; - } - //got a good demod - uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32); - uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32); - uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32); - uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8); - PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, (unsigned int) checksum); - PrintAndLog("Raw: %08X%08X", raw1,raw2); - setDemodBuf(DemodBuffer+ans, 64, 0); - return 1; -} - //by marshmellow - see ASKDemod int Cmdaskrawdemod(const char *Cmd) { @@ -561,45 +513,44 @@ int Cmdaskrawdemod(const char *Cmd) return ASKDemod(Cmd, true, false, 0); } -int AutoCorrelate(int window, bool SaveGrph, bool verbose) +int AutoCorrelate(const int *in, int *out, size_t len, int window, bool SaveGrph, bool verbose) { static int CorrelBuffer[MAX_GRAPH_TRACE_LEN]; size_t Correlation = 0; int maxSum = 0; int lastMax = 0; if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window); - for (int i = 0; i < GraphTraceLen - window; ++i) { + for (int i = 0; i < len - window; ++i) { int sum = 0; for (int j = 0; j < window; ++j) { - sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256; + sum += (in[j]*in[i + j]) / 256; } CorrelBuffer[i] = sum; - if (sum >= maxSum-100 && sum <= maxSum+100){ + if (sum >= maxSum-100 && sum <= maxSum+100) { //another max Correlation = i-lastMax; lastMax = i; if (sum > maxSum) maxSum = sum; - } else if (sum > maxSum){ + } else if (sum > maxSum) { maxSum=sum; lastMax = i; } } - if (Correlation==0){ + if (Correlation==0) { //try again with wider margin - for (int i = 0; i < GraphTraceLen - window; i++){ - if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){ + for (int i = 0; i < len - window; i++) { + if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)) { //another max Correlation = i-lastMax; lastMax = i; - //if (CorrelBuffer[i] > maxSum) maxSum = sum; } } } if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation); - if (SaveGrph){ - GraphTraceLen = GraphTraceLen - window; - memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int)); + if (SaveGrph) { + //GraphTraceLen = GraphTraceLen - window; + memcpy(out, CorrelBuffer, len * sizeof(int)); RepaintGraphWindow(); } return Correlation; @@ -632,7 +583,7 @@ int CmdAutoCorr(const char *Cmd) return 0; } if (grph == 'g') updateGrph=true; - return AutoCorrelate(window, updateGrph, true); + return AutoCorrelate(GraphBuffer, GraphBuffer, GraphTraceLen, window, updateGrph, true); } int CmdBitsamples(const char *Cmd) @@ -735,6 +686,18 @@ int CmdGraphShiftZero(const char *Cmd) return 0; } +int AskEdgeDetect(const int *in, int *out, int len, int threshold) { + int Last = 0; + for(int i = 1; i= threshold) //large jump up + Last = 127; + else if(in[i]-in[i-1] <= -1 * threshold) //large jump down + Last = -127; + out[i-1] = Last; + } + return 0; +} + //by marshmellow //use large jumps in read samples to identify edges of waves and then amplify that wave to max //similar to dirtheshold, threshold commands @@ -742,18 +705,12 @@ int CmdGraphShiftZero(const char *Cmd) int CmdAskEdgeDetect(const char *Cmd) { int thresLen = 25; - int Last = 0; + int ans = 0; sscanf(Cmd, "%i", &thresLen); - for(int i = 1; i=thresLen) //large jump up - Last = 127; - else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down - Last = -127; - GraphBuffer[i-1] = Last; - } + ans = AskEdgeDetect(GraphBuffer, GraphBuffer, GraphTraceLen, thresLen); RepaintGraphWindow(); - return 0; + return ans; } /* Print our clock rate */ @@ -847,14 +804,17 @@ int FSKrawDemod(const char *Cmd, bool verbose) } //get bit clock length if (!rfLen) { - rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow); + int firstClockEdge = 0; //todo - align grid on graph with this... + rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow, &firstClockEdge); if (!rfLen) rfLen = 50; } - int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow); + int startIdx = 0; + int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow, &startIdx); if (size > 0) { setDemodBuf(BitStream,size,0); + setClockGrid(rfLen, startIdx); - // Now output the bitstream to the scrollback by line of 16 bits + // Now output the bitstream to the scrollback by line of 16 bits if (verbose || g_debugMode) { PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow); PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert)); @@ -894,147 +854,6 @@ int CmdFSKrawdemod(const char *Cmd) return FSKrawDemod(Cmd, true); } -//by marshmellow -//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (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); - if (BitLen==0) return 0; - //get binary from fsk wave - int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo); - if (idx<0){ - if (g_debugMode){ - if (idx==-1){ - PrintAndLog("DEBUG: Just Noise Detected"); - } else if (idx == -2) { - PrintAndLog("DEBUG: Error demoding fsk"); - } else if (idx == -3) { - PrintAndLog("DEBUG: Preamble not found"); - } else if (idx == -4) { - PrintAndLog("DEBUG: Error in Manchester data"); - } else { - PrintAndLog("DEBUG: Error demoding fsk %d", idx); - } - } - 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; - 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); - - PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x", - hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo); - setDemodBuf(BitStream,BitLen,idx); - if (g_debugMode){ - PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen); - printDemodBuff(); - } - return 1; -} - -// FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits) -// 8 databits + 1 parity (1) -// CIITT 16 chksum -// 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 ] -*/ -int CmdFDXBdemodBI(const char *Cmd){ - - int invert = 1; - int clk = 32; - int errCnt = 0; - int maxErr = 0; - uint8_t BitStream[MAX_DEMOD_BUF_LEN]; - size_t size = getFromGraphBuf(BitStream); - - errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0); - if ( errCnt < 0 || errCnt > maxErr ) { - if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk); - return 0; - } - - errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1); - if (errCnt < 0 || errCnt > maxErr ) { - if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); - return 0; - } - - int preambleIndex = FDXBdemodBI(BitStream, &size); - if (preambleIndex < 0){ - if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex); - return 0; - } - if (size != 128) { - if (g_debugMode) PrintAndLog("Error incorrect data length found"); - return 0; - } - - setDemodBuf(BitStream, 128, preambleIndex); - - // remove marker bits (1's every 9th digit after preamble) (pType = 2) - size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117); - if ( size != 104 ) { - if (g_debugMode) PrintAndLog("Error removeParity:: %d", size); - return 0; - } - if (g_debugMode) { - char *bin = sprint_bin_break(BitStream,size,16); - PrintAndLog("DEBUG BinStream:\n%s",bin); - } - PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:"); - if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size); - - //got a good demod - uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32); - uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10); - uint8_t dataBlockBit = BitStream[48]; - uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14); - uint8_t animalBit = BitStream[63]; - uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16); - uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24); - - uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32); - uint8_t raw[8]; - num_to_bytes(rawid, 8, raw); - - if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8)); - - uint16_t calcCrc = crc16_ccitt_kermit(raw, 8); - PrintAndLog("Animal ID: %04u-%012" PRIu64, countryCode, NationalCode); - PrintAndLog("National Code: %012" PRIu64, NationalCode); - PrintAndLog("CountryCode: %04u", countryCode); - PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False"); - PrintAndLog("reserved Code: %u", reservedCode); - PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False"); - PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed"); - PrintAndLog("Extended: 0x%X\n", extended); - - return 1; -} - - //by marshmellow //attempt to psk1 demod graph buffer int PSKDemod(const char *Cmd, bool verbose) @@ -1054,16 +873,9 @@ int PSKDemod(const char *Cmd, bool verbose) uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; size_t BitLen = getFromGraphBuf(BitStream); if (BitLen==0) return 0; - uint8_t carrier=countFC(BitStream, BitLen, 0); - if (carrier!=2 && carrier!=4 && carrier!=8){ - //invalid carrier - return 0; - } - if (g_debugMode){ - PrintAndLog("Carrier: rf/%d",carrier); - } int errCnt=0; - errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert); + int startIdx = 0; + errCnt = pskRawDemod_ext(BitStream, &BitLen, &clk, &invert, &startIdx); if (errCnt > maxErr){ if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt); return 0; @@ -1080,98 +892,8 @@ int PSKDemod(const char *Cmd, bool verbose) } //prime demod buffer for output setDemodBuf(BitStream,BitLen,0); - return 1; -} - -// Indala 26 bit decode -// by marshmellow -// optional arguments - same as CmdpskNRZrawDemod (clock & invert) -int CmdIndalaDecode(const char *Cmd) -{ - int ans; - if (strlen(Cmd)>0){ - ans = PSKDemod(Cmd, 0); - } else{ //default to RF/32 - ans = PSKDemod("32", 0); - } - - if (!ans){ - if (g_debugMode) - PrintAndLog("Error1: %d",ans); - return 0; - } - uint8_t invert=0; - size_t size = DemodBufferLen; - int startIdx = indala26decode(DemodBuffer, &size, &invert); - if (startIdx < 0 || size > 224) { - if (g_debugMode) - PrintAndLog("Error2: %d",ans); - return -1; - } - setDemodBuf(DemodBuffer, size, (size_t)startIdx); - if (invert) - if (g_debugMode) - PrintAndLog("Had to invert bits"); - - PrintAndLog("BitLen: %d",DemodBufferLen); - //convert UID to HEX - uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7; - uid1=bytebits_to_byte(DemodBuffer,32); - uid2=bytebits_to_byte(DemodBuffer+32,32); - if (DemodBufferLen==64) { - PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2); - } else { - uid3=bytebits_to_byte(DemodBuffer+64,32); - uid4=bytebits_to_byte(DemodBuffer+96,32); - uid5=bytebits_to_byte(DemodBuffer+128,32); - uid6=bytebits_to_byte(DemodBuffer+160,32); - uid7=bytebits_to_byte(DemodBuffer+192,32); - PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", - sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7); - } - if (g_debugMode){ - PrintAndLog("DEBUG: printing demodbuffer:"); - printDemodBuff(); - } - return 1; -} + setClockGrid(clk, startIdx); -int CmdPSKNexWatch(const char *Cmd) -{ - if (!PSKDemod("", false)) return 0; - uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; - size_t startIdx = 0, size = DemodBufferLen; - bool invert = false; - if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){ - // if didn't find preamble try again inverting - if (!PSKDemod("1", false)) return 0; - size = DemodBufferLen; - if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0; - invert = true; - } - if (size != 128) return 0; - setDemodBuf(DemodBuffer, size, startIdx+4); - startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0) - //get ID - uint32_t ID = 0; - for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){ - for (uint8_t idx=0; idx<8; idx++){ - ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)]; - } - } - //parity check (TBD) - - //checksum check (TBD) - - //output - PrintAndLog("NexWatch ID: %d", ID); - if (invert){ - PrintAndLog("Had to Invert - probably NexKey"); - for (uint8_t idx=0; idx0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); if (verbose || g_debugMode) { @@ -1348,6 +1072,30 @@ int CmdRawDemod(const char *Cmd) return ans; } +void setClockGrid(int clk, int offset) { + g_DemodStartIdx = offset; + g_DemodClock = clk; + if (g_debugMode) PrintAndLog("demodoffset %d, clk %d",offset,clk); + + if (offset > clk) offset %= clk; + if (offset < 0) offset += clk; + + if (offset > GraphTraceLen || offset < 0) return; + if (clk < 8 || clk > GraphTraceLen) { + GridLocked = false; + GridOffset = 0; + PlotGridX = 0; + PlotGridXdefault = 0; + RepaintGraphWindow(); + } else { + GridLocked = true; + GridOffset = offset; + PlotGridX = clk; + PlotGridXdefault = clk; + RepaintGraphWindow(); + } +} + int CmdGrid(const char *Cmd) { sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY); @@ -1439,7 +1187,7 @@ uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b) return val; } -int getSamples(const char *Cmd, bool silent) +int getSamples(int n, bool silent) { //If we get all but the last byte in bigbuf, // we don't have to worry about remaining trash @@ -1448,14 +1196,12 @@ int getSamples(const char *Cmd, bool silent) uint8_t got[BIGBUF_SIZE-1] = { 0 }; - int n = strtol(Cmd, NULL, 0); - if (n == 0 || n > sizeof(got)) n = sizeof(got); - PrintAndLog("Reading %d bytes from device memory\n", n); + if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n); GetFromBigBuf(got,n,0); - PrintAndLog("Data fetched"); + if (!silent) PrintAndLog("Data fetched"); UsbCommand response; WaitForResponse(CMD_ACK, &response); uint8_t bits_per_sample = 8; @@ -1464,13 +1210,13 @@ int getSamples(const char *Cmd, bool silent) if(response.arg[0] > 0) { sample_config *sc = (sample_config *) response.d.asBytes; - PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample + if (!silent) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample , sc->decimation); bits_per_sample = sc->bits_per_sample; } if(bits_per_sample < 8) { - PrintAndLog("Unpacking..."); + if (!silent) PrintAndLog("Unpacking..."); BitstreamIn bout = { got, bits_per_sample * n, 0}; int j =0; for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) { @@ -1487,13 +1233,15 @@ int getSamples(const char *Cmd, bool silent) GraphTraceLen = n; } + setClockGrid(0,0); RepaintGraphWindow(); return 0; } int CmdSamples(const char *Cmd) { - return getSamples(Cmd, false); + int n = strtol(Cmd, NULL, 0); + return getSamples(n, false); } int CmdTuneSamples(const char *Cmd) @@ -1589,6 +1337,7 @@ int CmdLoad(const char *Cmd) } fclose(f); PrintAndLog("loaded %d samples", GraphTraceLen); + setClockGrid(0,0); RepaintGraphWindow(); return 0; } @@ -1624,9 +1373,9 @@ int CmdMtrim(const char *Cmd) { if (start > GraphTraceLen || stop > GraphTraceLen || start > stop) return 0; start++; //leave start position sample - GraphTraceLen -= stop - start; + GraphTraceLen = stop - start; for (int i = 0; i < GraphTraceLen; i++) { - GraphBuffer[start+i] = GraphBuffer[stop+i]; + GraphBuffer[i] = GraphBuffer[start+i]; } return 0; } @@ -1696,37 +1445,42 @@ int CmdScale(const char *Cmd) return 0; } -int CmdDirectionalThreshold(const char *Cmd) +int directionalThreshold(const int* in, int *out, size_t len, int8_t up, int8_t down) { - int8_t upThres = param_get8(Cmd, 0); - int8_t downThres = param_get8(Cmd, 1); + int lastValue = in[0]; + out[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. - printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); - - int lastValue = GraphBuffer[0]; - GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in. - - for (int i = 1; i < GraphTraceLen; ++i) { + for (int i = 1; i < len; ++i) { // Apply first threshold to samples heading up - if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue) + if (in[i] >= up && in[i] > lastValue) { - lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. - GraphBuffer[i] = 127; + lastValue = out[i]; // Buffer last value as we overwrite it. + out[i] = 1; } // Apply second threshold to samples heading down - else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue) + else if (in[i] <= down && in[i] < lastValue) { - lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. - GraphBuffer[i] = -127; + lastValue = out[i]; // Buffer last value as we overwrite it. + out[i] = -1; } else { - lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it. - GraphBuffer[i] = GraphBuffer[i-1]; - + lastValue = out[i]; // Buffer last value as we overwrite it. + out[i] = out[i-1]; } } - GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample. + out[0] = out[1]; // Align with first edited sample. + return 0; +} + +int CmdDirectionalThreshold(const char *Cmd) +{ + int8_t upThres = param_get8(Cmd, 0); + int8_t downThres = param_get8(Cmd, 1); + + printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres); + + directionalThreshold(GraphBuffer, GraphBuffer,GraphTraceLen, upThres, downThres); RepaintGraphWindow(); return 0; } @@ -1856,8 +1610,6 @@ static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"}, - {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"}, - {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking tag from GraphBuffer"}, {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"}, {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"}, {"bin2hex", Cmdbin2hex, 1, "bin2hex -- Converts binary to hexadecimal"}, @@ -1865,9 +1617,6 @@ static command_t CommandTable[] = {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, {"dec", CmdDec, 1, "Decimate samples"}, {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"}, - {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"}, - //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"}, - {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"}, {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"}, {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, @@ -1882,8 +1631,6 @@ static command_t CommandTable[] = {"norm", CmdNorm, 1, "Normalize max/min to +/-128"}, {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"}, {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] [l] -- print the data in the DemodBuffer - 'x' for hex output"}, - {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"}, - {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"}, {"rawdemod", CmdRawDemod, 1, "[modulation] ... -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"}, {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"}, {"save", CmdSave, 1, " -- Save trace (from graph window)"},