X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/979bba376dc9d6430b00b853a99b9dfadca4f38c..a62bf3afe1732a8c111bb8687da4f536c86f73ec:/client/cmddata.c diff --git a/client/cmddata.c b/client/cmddata.c index e23b6d59..f3644304 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -23,10 +23,11 @@ #include "lfdemod.h" #include "usb_cmd.h" #include "crc.h" +#include "crc16.h" uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN]; -uint8_t g_debugMode; -size_t DemodBufferLen; +uint8_t g_debugMode=0; +size_t DemodBufferLen=0; static int CmdHelp(const char *Cmd); //set the demod buffer with given array of binary (one bit per byte) @@ -118,7 +119,7 @@ int CmdPrintDemodBuff(const char *Cmd) int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string if (hexMode){ - char *buf = DemodBuffer + offset; + char *buf = (char *) (DemodBuffer + offset); numBits = binarraytohex(hex, buf, numBits); if (numBits==0) return 0; PrintAndLog("DemodBuffer: %s",hex); @@ -343,8 +344,8 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) setDemodBuf(BitStream,BitLen,0); if (verbose || g_debugMode){ if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt); - if (askType) PrintAndLog("ASK/Manchester decoded bitstream:"); - else PrintAndLog("ASK/Raw decoded bitstream:"); + if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk); + else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk); // Now output the bitstream to the scrollback by line of 16 bits printDemodBuff(); @@ -391,7 +392,7 @@ int Cmdmandecoderaw(const char *Cmd) int errCnt=0; size_t size=0; int invert=0; - size_t maxErr = 20; + int maxErr = 20; char cmdp = param_getchar(Cmd, 0); if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') { PrintAndLog("Usage: data manrawdecode [invert] [maxErr]"); @@ -497,22 +498,20 @@ int CmdBiphaseDecodeRaw(const char *Cmd) int ASKbiphaseDemod(const char *Cmd, bool verbose) { //ask raw demod GraphBuffer first - int offset=0, clk=0, invert=0, maxErr=0, ans=0; - ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr); - if (ans>0) - ans = ASKDemod(Cmd+1, FALSE, FALSE, 0); - else - ans = ASKDemod(Cmd, FALSE, FALSE, 0); - if (!ans) { - if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans); - return 0; - } - - //attempt to Biphase decode DemodBuffer - size_t size = DemodBufferLen; + 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]; - memcpy(BitStream, DemodBuffer, DemodBufferLen); - int errCnt = BiphaseRawDecode(BitStream, &size, offset, 0); + 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); + 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); if (errCnt < 0){ if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt); return 0; @@ -524,7 +523,7 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose) //success set DemodBuffer and return setDemodBuf(BitStream, size, 0); if (g_debugMode || verbose){ - PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt); + PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt); printDemodBuff(); } return 1; @@ -1457,6 +1456,94 @@ int CmdFSKdemodPyramid(const char *Cmd) 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; + } + + 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-%012llu", countryCode, NationalCode); + PrintAndLog("National Code: %012llu", 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) @@ -1470,12 +1557,12 @@ int PSKDemod(const char *Cmd, bool verbose) clk=0; } if (invert != 0 && invert != 1) { - if (verbose) PrintAndLog("Invalid argument: %s", Cmd); + if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd); return 0; } uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; size_t BitLen = getFromGraphBuf(BitStream); - if (BitLen==0) return -1; + if (BitLen==0) return 0; uint8_t carrier=countFC(BitStream, BitLen, 0); if (carrier!=2 && carrier!=4 && carrier!=8){ //invalid carrier @@ -1871,7 +1958,7 @@ typedef struct { uint8_t * buffer; uint32_t numbits; uint32_t position; -}BitstreamOut; +} BitstreamOut; bool _headBit( BitstreamOut *stream) { @@ -2201,6 +2288,7 @@ 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"}, {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"}, //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"}, {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},