git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfio.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <inttypes.h>
   5 #include <limits.h>
   6 #include "cmdlfio.h"
   7 #include "proxmark3.h"
   8 #include "data.h"
   9 #include "graph.h"
  10 #include "ui.h"
  11 #include "cmdparser.h"
  12 #include "cmdmain.h"
  13 #include "cmddata.h"
  14 #include "cmdlf.h"
  15 #include "lfdemod.h"  //for IOdemodFSK + bytebits_to_byte
  16 #include "util.h"     //for sprint_bin_break
  17
  18 static int CmdHelp(const char *Cmd);
  19
  20 int CmdIOReadFSK(const char *Cmd)
  21 {
  22   int findone=0;
  23   if(Cmd[0]=='1') findone=1;
  24
  25   UsbCommand c={CMD_IO_DEMOD_FSK};
  26   c.arg[0]=findone;
  27   SendCommand(&c);
  28   return 0;
  29 }
  30
  31 //by marshmellow
  32 //IO-Prox demod - FSK RF/64 with preamble of 000000001
  33 //print ioprox ID and some format details
  34 int CmdFSKdemodIO(const char *Cmd)
  35 {
  36   int idx=0;
  37   //something in graphbuffer?
  38   if (GraphTraceLen < 65) {
  39     if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
  40     return 0;
  41   }
  42   uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
  43   size_t BitLen = getFromGraphBuf(BitStream);
  44   if (BitLen==0) return 0;
  45
  46   //get binary from fsk wave
  47   idx = IOdemodFSK(BitStream,BitLen);
  48   if (idx<0){
  49     if (g_debugMode){
  50       if (idx==-1){
  51         PrintAndLog("DEBUG: Just Noise Detected");
  52       } else if (idx == -2) {
  53         PrintAndLog("DEBUG: not enough samples");
  54       } else if (idx == -3) {
  55         PrintAndLog("DEBUG: error during fskdemod");
  56       } else if (idx == -4) {
  57         PrintAndLog("DEBUG: Preamble not found");
  58       } else if (idx == -5) {
  59         PrintAndLog("DEBUG: Separator bits not found");
  60       } else {
  61         PrintAndLog("DEBUG: Error demoding fsk %d", idx);
  62       }
  63     }
  64     return 0;
  65   }
  66   if (idx==0){
  67     if (g_debugMode){
  68       PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
  69       if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
  70     }
  71     return 0;
  72   }
  73     //Index map
  74     //0           10          20          30          40          50          60
  75     //|           |           |           |           |           |           |
  76     //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
  77     //-----------------------------------------------------------------------------
  78     //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
  79     //
  80     //XSF(version)facility:codeone+codetwo (raw)
  81     //Handle the data
  82   if (idx+64>BitLen) {
  83     if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
  84     return 0;
  85   }
  86   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]);
  87   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]);
  88   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]);
  89   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]);
  90   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]);
  91   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]);
  92   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]);
  93
  94   uint32_t code = bytebits_to_byte(BitStream+idx,32);
  95   uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
  96   uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
  97   uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
  98   uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
  99   uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
 100   uint16_t calccrc = 0;
 101
 102   for (uint8_t i=1; i<6; ++i){
 103     calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
 104   }
 105   calccrc &= 0xff;
 106   calccrc = 0xff - calccrc;
 107
 108   char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
 109
 110   PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
 111   setDemodBuf(BitStream,64,idx);
 112   if (g_debugMode){
 113     PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
 114     printDemodBuff();
 115   }
 116   return 1;
 117 }
 118
 119 int CmdIOClone(const char *Cmd)
 120 {
 121   unsigned int hi = 0, lo = 0;
 122   int n = 0, i = 0;
 123   UsbCommand c;
 124
 125
 126   //if (1 == sscanf(str, "0x%"SCNx32, &hi)) {
 127     // value now contains the value in the string--decimal 255, in this case.
 128   //}
 129
 130   while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 131       hi = (hi << 4) | (lo >> 28);
 132       lo = (lo << 4) | (n & 0xf);
 133   }
 134
 135   PrintAndLog("Cloning tag with ID %08x %08x", hi, lo);
 136   PrintAndLog("Press pm3-button to abort simulation");
 137   c.cmd = CMD_IO_CLONE_TAG;
 138   c.arg[0] = hi;
 139   c.arg[1] = lo;
 140
 141   SendCommand(&c);
 142   return 0;
 143 }
 144
 145 static command_t CommandTable[] =
 146 {
 147   {"help",        CmdHelp,            1, "This help"},
 148   {"demod",       CmdFSKdemodIO,      1, "Demodulate IO Prox tag from the GraphBuffer"},
 149   {"read",        CmdIOReadFSK,       0, "['1'] Realtime IO FSK demodulate from antenna (option '1' for one tag only)"},
 150   {"clone",       CmdIOClone,         0, "Clone ioProx Tag"},
 151   {NULL, NULL, 0, NULL}
 152 };
 153
 154 int CmdLFIO(const char *Cmd)
 155 {
 156   CmdsParse(CommandTable, Cmd);
 157   return 0;
 158 }
 159
 160 int CmdHelp(const char *Cmd)
 161 {
 162   CmdsHelp(CommandTable);
 163   return 0;
 164 }