X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/623e9da44873b8d7b444b61ce9536efcc35c67c5..8c6b22980cac809f51cdb307a2043b380659fe9c:/client/cmddata.c?ds=inline diff --git a/client/cmddata.c b/client/cmddata.c index bec1b5aa..22da1805 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -24,10 +24,11 @@ #include "usb_cmd.h" #include "crc.h" #include "crc16.h" +#include "loclass/cipherutils.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) @@ -1491,9 +1492,9 @@ int CmdFDXBdemodBI(const char *Cmd){ setDemodBuf(BitStream, 128, preambleIndex); - // remove but don't verify parity. (pType = 2) + // remove marker bits (1's every 9th digit after preamble) (pType = 2) size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117); - if ( size <= 103 ) { + if ( size != 104 ) { if (g_debugMode) PrintAndLog("Error removeParity:: %d", size); return 0; } @@ -1943,26 +1944,14 @@ int CmdHpf(const char *Cmd) RepaintGraphWindow(); return 0; } -typedef struct { - uint8_t * buffer; - uint32_t numbits; - uint32_t position; -}BitstreamOut; -bool _headBit( BitstreamOut *stream) -{ - int bytepos = stream->position >> 3; // divide by 8 - int bitpos = (stream->position++) & 7; // mask out 00000111 - return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1; -} - -uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b) +uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b) { int i; uint8_t val = 0; for(i =0 ; i < bits_per_sample; i++) { - val |= (_headBit(b) << (7-i)); + val |= (headBit(b) << (7-i)); } return val; } @@ -2002,7 +1991,7 @@ int getSamples(const char *Cmd, bool silent) if(bits_per_sample < 8) { PrintAndLog("Unpacking..."); - BitstreamOut bout = { got, bits_per_sample * n, 0}; + BitstreamIn bout = { got, bits_per_sample * n, 0}; int j =0; for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) { uint8_t sample = getByte(bits_per_sample, &bout); @@ -2265,6 +2254,99 @@ int CmdZerocrossings(const char *Cmd) return 0; } +int usage_data_bin2hex(){ + PrintAndLog("Usage: data bin2hex "); + PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)"); + return 0; +} + +/** + * @brief Utility for conversion via cmdline. + * @param Cmd + * @return + */ +int Cmdbin2hex(const char *Cmd) +{ + int bg =0, en =0; + if(param_getptr(Cmd, &bg, &en, 0)) + { + return usage_data_bin2hex(); + } + //Number of digits supplied as argument + size_t length = en - bg +1; + size_t bytelen = (length+7) / 8; + uint8_t* arr = (uint8_t *) malloc(bytelen); + memset(arr, 0, bytelen); + BitstreamOut bout = { arr, 0, 0 }; + + for(; bg <= en ;bg++) + { + char c = Cmd[bg]; + if( c == '1') pushBit(&bout, 1); + else if( c == '0') pushBit(&bout, 0); + else PrintAndLog("Ignoring '%c'", c); + } + + if(bout.numbits % 8 != 0) + { + printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8)); + } + + //Uses printf instead of PrintAndLog since the latter + // adds linebreaks to each printout - this way was more convenient since we don't have to + // allocate a string and write to that first... + for(size_t x = 0; x < bytelen ; x++) + { + printf("%02X", arr[x]); + } + printf("\n"); + free(arr); + return 0; +} + +int usage_data_hex2bin(){ + + PrintAndLog("Usage: data bin2hex "); + PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)"); + return 0; + +} + +int Cmdhex2bin(const char *Cmd) +{ + int bg =0, en =0; + if(param_getptr(Cmd, &bg, &en, 0)) + { + return usage_data_hex2bin(); + } + + + while(bg <= en ) + { + char x = Cmd[bg++]; + // capitalize + if (x >= 'a' && x <= 'f') + x -= 32; + // convert to numeric value + if (x >= '0' && x <= '9') + x -= '0'; + else if (x >= 'A' && x <= 'F') + x -= 'A' - 10; + else + continue; + + //Uses printf instead of PrintAndLog since the latter + // adds linebreaks to each printout - this way was more convenient since we don't have to + // allocate a string and write to that first... + + for(int i= 0 ; i < 4 ; ++i) + printf("%d",(x >> (3 - i)) & 1); + } + printf("\n"); + + return 0; +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, @@ -2273,6 +2355,7 @@ static command_t CommandTable[] = {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II 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"}, {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"}, {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"}, {"dec", CmdDec, 1, "Decimate samples"}, @@ -2287,6 +2370,7 @@ static command_t CommandTable[] = {"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"}, + {"hex2bin", Cmdhex2bin, 1, "hex2bin -- Converts hexadecimal to binary"}, {"hide", CmdHide, 1, "Hide graph window"}, {"hpf", CmdHpf, 1, "Remove DC offset from trace"}, {"load", CmdLoad, 1, " -- Load trace (to graph window"},