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

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Low frequency HID commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include "proxusb.h"
  13 #include "ui.h"
  14 #include "graph.h"
  15 #include "cmdparser.h"
  16 #include "cmdlfhid.h"
  17
  18 static int CmdHelp(const char *Cmd);
  19
  20 int CmdHIDDemod(const char *Cmd)
  21 {
  22   if (GraphTraceLen < 4800) {
  23     PrintAndLog("too short; need at least 4800 samples");
  24     return 0;
  25   }
  26
  27   GraphTraceLen = 4800;
  28   for (int i = 0; i < GraphTraceLen; ++i) {
  29     if (GraphBuffer[i] < 0) {
  30       GraphBuffer[i] = 0;
  31     } else {
  32       GraphBuffer[i] = 1;
  33     }
  34   }
  35   RepaintGraphWindow();
  36   return 0;
  37 }
  38
  39 int CmdHIDDemodFSK(const char *Cmd)
  40 {
  41   UsbCommand c={CMD_HID_DEMOD_FSK};
  42   SendCommand(&c);
  43   return 0;
  44 }
  45
  46 int CmdHIDSim(const char *Cmd)
  47 {
  48   unsigned int hi = 0, lo = 0;
  49   int n = 0, i = 0;
  50
  51   while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  52     hi = (hi << 4) | (lo >> 28);
  53     lo = (lo << 4) | (n & 0xf);
  54   }
  55
  56   PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
  57
  58   UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
  59   SendCommand(&c);
  60   return 0;
  61 }
  62
  63 static command_t CommandTable[] =
  64 {
  65   {"help",      CmdHelp,        1, "This help"},
  66   {"demod",     CmdHIDDemod,    1, "Demodulate HID Prox Card II (not optimal)"},
  67   {"fskdemod",  CmdHIDDemodFSK, 0, "Realtime HID FSK demodulator"},
  68   {"sim",       CmdHIDSim,      0, "<ID> -- HID tag simulator"},
  69   {NULL, NULL, 0, NULL}
  70 };
  71
  72 int CmdLFHID(const char *Cmd)
  73 {
  74   CmdsParse(CommandTable, Cmd);
  75   return 0;
  76 }
  77
  78 int CmdHelp(const char *Cmd)
  79 {
  80   CmdsHelp(CommandTable);
  81   return 0;
  82 }