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 <string.h>
  13 #include "proxmark3.h"
  14 #include "ui.h"
  15 #include "graph.h"
  16 #include "cmdparser.h"
  17 #include "cmdlfhid.h"
  18
  19 static int CmdHelp(const char *Cmd);
  20
  21 int CmdHIDDemod(const char *Cmd)
  22 {
  23   if (GraphTraceLen < 4800) {
  24     PrintAndLog("too short; need at least 4800 samples");
  25     return 0;
  26   }
  27
  28   GraphTraceLen = 4800;
  29   for (int i = 0; i < GraphTraceLen; ++i) {
  30     if (GraphBuffer[i] < 0) {
  31       GraphBuffer[i] = 0;
  32     } else {
  33       GraphBuffer[i] = 1;
  34     }
  35   }
  36   RepaintGraphWindow();
  37   return 0;
  38 }
  39
  40 int CmdHIDDemodFSK(const char *Cmd)
  41 {
  42   UsbCommand c={CMD_HID_DEMOD_FSK};
  43   SendCommand(&c);
  44   return 0;
  45 }
  46
  47 int CmdHIDSim(const char *Cmd)
  48 {
  49   unsigned int hi = 0, lo = 0;
  50   int n = 0, i = 0;
  51
  52   while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  53     hi = (hi << 4) | (lo >> 28);
  54     lo = (lo << 4) | (n & 0xf);
  55   }
  56
  57   PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
  58
  59   UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
  60   SendCommand(&c);
  61   return 0;
  62 }
  63
  64 int CmdHIDClone(const char *Cmd)
  65 {
  66   unsigned int hi2 = 0, hi = 0, lo = 0;
  67   int n = 0, i = 0;
  68   UsbCommand c;
  69
  70   if (strchr(Cmd,'l') != 0) {
  71         while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  72       hi2 = (hi2 << 4) | (hi >> 28);
  73       hi = (hi << 4) | (lo >> 28);
  74       lo = (lo << 4) | (n & 0xf);
  75     }
  76
  77     PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
  78
  79     c.d.asBytes[0] = 1;
  80   }
  81   else {
  82         while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  83       hi = (hi << 4) | (lo >> 28);
  84       lo = (lo << 4) | (n & 0xf);
  85     }
  86
  87     PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
  88
  89     hi2 = 0;
  90     c.d.asBytes[0] = 0;
  91   }
  92
  93   c.cmd = CMD_HID_CLONE_TAG;
  94   c.arg[0] = hi2;
  95   c.arg[1] = hi;
  96   c.arg[2] = lo;
  97
  98   SendCommand(&c);
  99   return 0;
 100 }
 101
 102 static command_t CommandTable[] =
 103 {
 104   {"help",      CmdHelp,        1, "This help"},
 105   {"demod",     CmdHIDDemod,    1, "Demodulate HID Prox Card II (not optimal)"},
 106   {"fskdemod",  CmdHIDDemodFSK, 1, "Realtime HID FSK demodulator"},
 107   {"sim",       CmdHIDSim,      1, "<ID> -- HID tag simulator"},
 108   {"clone",     CmdHIDClone,    1, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"},
 109   {NULL, NULL, 0, NULL}
 110 };
 111
 112 int CmdLFHID(const char *Cmd)
 113 {
 114   CmdsParse(CommandTable, Cmd);
 115   return 0;
 116 }
 117
 118 int CmdHelp(const char *Cmd)
 119 {
 120   CmdsHelp(CommandTable);
 121   return 0;
 122 }