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         int findone = 0;
  43         if(Cmd[0]=='1') findone=1;
  44         UsbCommand c = {CMD_HID_DEMOD_FSK};
  45         c.arg[0]=findone;
  46         SendCommand(&c);
  47         return 0;
  48 }
  49
  50 int CmdHIDSim(const char *Cmd)
  51 {
  52   unsigned int hi = 0, lo = 0;
  53   int n = 0, i = 0;
  54
  55   while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  56     hi = (hi << 4) | (lo >> 28);
  57     lo = (lo << 4) | (n & 0xf);
  58   }
  59
  60   PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
  61
  62   UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
  63   SendCommand(&c);
  64   return 0;
  65 }
  66
  67 int CmdHIDClone(const char *Cmd)
  68 {
  69   unsigned int hi2 = 0, hi = 0, lo = 0;
  70   int n = 0, i = 0;
  71   UsbCommand c;
  72
  73   if (strchr(Cmd,'l') != 0) {
  74         while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  75       hi2 = (hi2 << 4) | (hi >> 28);
  76       hi = (hi << 4) | (lo >> 28);
  77       lo = (lo << 4) | (n & 0xf);
  78     }
  79
  80     PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
  81
  82     c.d.asBytes[0] = 1;
  83   }
  84   else {
  85         while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
  86       hi = (hi << 4) | (lo >> 28);
  87       lo = (lo << 4) | (n & 0xf);
  88     }
  89
  90     PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
  91
  92     hi2 = 0;
  93     c.d.asBytes[0] = 0;
  94   }
  95
  96   c.cmd = CMD_HID_CLONE_TAG;
  97   c.arg[0] = hi2;
  98   c.arg[1] = hi;
  99   c.arg[2] = lo;
 100
 101   SendCommand(&c);
 102   return 0;
 103 }
 104
 105 static command_t CommandTable[] =
 106 {
 107   {"help",      CmdHelp,        1, "This help"},
 108   {"demod",     CmdHIDDemod,    1, "Demodulate HID Prox Card II (not optimal)"},
 109   {"fskdemod",  CmdHIDDemodFSK, 0, "['1'] Realtime HID FSK demodulator (option '1' for one tag only)"},
 110   {"sim",       CmdHIDSim,      0, "<ID> -- HID tag simulator"},
 111   {"clone",     CmdHIDClone,    0, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"},
 112   {NULL, NULL, 0, NULL}
 113 };
 114
 115 int CmdLFHID(const char *Cmd)
 116 {
 117   CmdsParse(CommandTable, Cmd);
 118   return 0;
 119 }
 120
 121 int CmdHelp(const char *Cmd)
 122 {
 123   CmdsHelp(CommandTable);
 124   return 0;
 125 }