X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/4888b2819574627efea9bd7d23444d785c5a2077..refs/pull/304/head:/client/cmdlfio.c?ds=sidebyside diff --git a/client/cmdlfio.c b/client/cmdlfio.c index 14ce5498..c71928ec 100644 --- a/client/cmdlfio.c +++ b/client/cmdlfio.c @@ -1,8 +1,19 @@ +//----------------------------------------------------------------------------- +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// Low frequency ioProx commands +// FSK2a, rf/64, 64 bits (complete) +//----------------------------------------------------------------------------- + #include #include #include #include #include +#include "cmdlfio.h" #include "proxmark3.h" #include "data.h" #include "graph.h" @@ -11,10 +22,12 @@ #include "cmdmain.h" #include "cmddata.h" #include "cmdlf.h" +#include "lfdemod.h" //for IOdemodFSK + bytebits_to_byte +#include "util.h" //for sprint_bin_break static int CmdHelp(const char *Cmd); -int CmdIODemodFSK(const char *Cmd) +int CmdIOReadFSK(const char *Cmd) { int findone=0; if(Cmd[0]=='1') findone=1; @@ -25,18 +38,96 @@ int CmdIODemodFSK(const char *Cmd) return 0; } -int CmdIOProxDemod(const char *Cmd){ - if (GraphTraceLen < 4800) { - PrintAndLog("too short; need at least 4800 samples"); +//by marshmellow +//IO-Prox demod - FSK RF/64 with preamble of 000000001 +//print ioprox ID and some format details +int CmdFSKdemodIO(const char *Cmd) +{ + int idx=0; + //something in graphbuffer? + if (GraphTraceLen < 65) { + if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer"); return 0; } - GraphTraceLen = 4800; - for (int i = 0; i < GraphTraceLen; ++i) { - GraphBuffer[i] = (GraphBuffer[i] < 0) ? 0 : 1; + uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0}; + size_t BitLen = getFromGraphBuf(BitStream); + if (BitLen==0) return 0; + + int waveIdx = 0; + //get binary from fsk wave + idx = IOdemodFSK(BitStream,BitLen, &waveIdx); + if (idx<0){ + if (g_debugMode){ + if (idx==-1){ + PrintAndLog("DEBUG: Just Noise Detected"); + } else if (idx == -2) { + PrintAndLog("DEBUG: not enough samples"); + } else if (idx == -3) { + PrintAndLog("DEBUG: error during fskdemod"); + } else if (idx == -4) { + PrintAndLog("DEBUG: Preamble not found"); + } else if (idx == -5) { + PrintAndLog("DEBUG: Separator bits not found"); + } else { + PrintAndLog("DEBUG: Error demoding fsk %d", idx); + } + } + return 0; } - RepaintGraphWindow(); - return 0; -} + if (idx==0){ + if (g_debugMode){ + PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen); + if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16)); + } + return 0; + } + //Index map + //0 10 20 30 40 50 60 + //| | | | | | | + //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 + //----------------------------------------------------------------------------- + //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 + // + //XSF(version)facility:codeone+codetwo (raw) + //Handle the data + if (idx+64>BitLen) { + if (g_debugMode) 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]); + PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]); + PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]); + PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]); + + uint32_t code = bytebits_to_byte(BitStream+idx,32); + uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); + uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4 + 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 + uint8_t crc = bytebits_to_byte(BitStream+idx+54,8); + uint16_t calccrc = 0; + + for (uint8_t i=1; i<6; ++i){ + calccrc += bytebits_to_byte(BitStream+idx+9*i,8); + } + calccrc &= 0xff; + calccrc = 0xff - calccrc; + + char *crcStr = (crc == calccrc) ? "crc ok": "!crc"; + + PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr); + setDemodBuf(BitStream,64,idx); + setClockGrid(64, waveIdx + (idx*64)); + + if (g_debugMode){ + PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64); + printDemodBuff(); + } + return 1; +} int CmdIOClone(const char *Cmd) { @@ -67,9 +158,9 @@ int CmdIOClone(const char *Cmd) static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"demod", CmdIOProxDemod, 1, "Demodulate Stream"}, - {"fskdemod", CmdIODemodFSK, 0, "['1'] Realtime IO FSK demodulator (option '1' for one tag only)"}, - {"clone", CmdIOClone, 0, "Clone ioProx Tag"}, + {"demod", CmdFSKdemodIO, 1, "Demodulate IO Prox tag from the GraphBuffer"}, + {"read", CmdIOReadFSK, 0, "['1'] Realtime IO FSK demodulate from antenna (option '1' for one tag only)"}, + {"clone", CmdIOClone, 0, "Clone ioProx Tag"}, {NULL, NULL, 0, NULL} }; @@ -83,4 +174,4 @@ int CmdHelp(const char *Cmd) { CmdsHelp(CommandTable); return 0; -} \ No newline at end of file +}