X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/1ee79256095a770dd406a9cbd48f2a04c2d1499a..0f321d631adb37c7cc6c6567f66eef8e2a795760:/client/cmddata.c?ds=inline diff --git a/client/cmddata.c b/client/cmddata.c index 1acce2ed..664ef850 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -22,16 +22,12 @@ #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; static int CmdHelp(const char *Cmd); @@ -42,8 +38,8 @@ 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 +49,36 @@ 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; + + if (saveOpt==1) { //save + + memcpy(SavedDB, DemodBuffer, sizeof(DemodBuffer)); + SavedDBlen = DemodBufferLen; + DB_Saved=true; + } else if (DB_Saved) { //restore + memcpy(DemodBuffer, SavedDB, sizeof(DemodBuffer)); + DemodBufferLen = SavedDBlen; + } + return; +} + int CmdSetDebugMode(const char *Cmd) { int demod=0; @@ -195,15 +221,21 @@ 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; @@ -216,6 +248,8 @@ int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, //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); @@ -290,7 +324,7 @@ 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]; @@ -352,13 +386,13 @@ 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; + 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); @@ -387,7 +421,7 @@ 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]; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]; size_t size = getFromGraphBuf(BitStream); //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); @@ -754,12 +788,15 @@ 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_ext(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 if (verbose || g_debugMode) { @@ -801,147 +838,6 @@ 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) @@ -961,16 +857,9 @@ 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; @@ -987,45 +876,8 @@ int PSKDemod(const char *Cmd, bool verbose) } //prime demod buffer for output setDemodBuf(BitStream,BitLen,0); - 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) { @@ -1202,6 +1056,26 @@ int CmdRawDemod(const char *Cmd) return ans; } +void setClockGrid(int clk, int offset) { + 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); @@ -1293,7 +1167,7 @@ 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 @@ -1302,14 +1176,12 @@ 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; @@ -1318,13 +1190,13 @@ 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++) { @@ -1347,7 +1219,8 @@ int getSamples(const char *Cmd, bool silent) int CmdSamples(const char *Cmd) { - return getSamples(Cmd, false); + int n = strtol(Cmd, NULL, 0); + return getSamples(n, false); } int CmdTuneSamples(const char *Cmd) @@ -1478,9 +1351,9 @@ 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; } @@ -1717,9 +1590,6 @@ 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"}, @@ -1734,7 +1604,6 @@ 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"}, - {"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)"},