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

   1 //-----------------------------------------------------------------------------
   2 // Authored by Iceman
   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 COTAG commands
   9 //-----------------------------------------------------------------------------
  10 #include "cmdlfcotag.h"  // COTAG function declarations
  11
  12 static int CmdHelp(const char *Cmd);
  13
  14 int usage_lf_cotag_read(void){
  15         PrintAndLog("Usage: lf COTAG read [h] <signaldata>");
  16         PrintAndLog("Options:");
  17         PrintAndLog("      h          : This help");
  18         PrintAndLog("      <0|1|2>    : 0 - HIGH/LOW signal; maxlength bigbuff");
  19         PrintAndLog("                 : 1 - translation of HI/LO into bytes with manchester 0,1");
  20         PrintAndLog("                 : 2 - raw signal; maxlength bigbuff");
  21         PrintAndLog("");
  22         PrintAndLog("Sample:");
  23         PrintAndLog("        lf cotag read 0");
  24         PrintAndLog("        lf cotag read 1");
  25         return 0;
  26 }
  27 int CmdCOTAGDemod(const char *Cmd) {
  28         return 0;
  29 }
  30
  31 // When reading a COTAG.
  32 // 0 = HIGH/LOW signal - maxlength bigbuff
  33 // 1 = translation for HI/LO into bytes with manchester 0,1 - length 300
  34 // 2 = raw signal -  maxlength bigbuff
  35 int CmdCOTAGRead(const char *Cmd) {
  36
  37         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_cotag_read();
  38
  39         uint8_t bits[320] = {0};
  40         uint32_t rawsignal = 0;
  41         sscanf(Cmd, "%u", &rawsignal);
  42
  43         UsbCommand c = {CMD_COTAG, {rawsignal, 0, 0}};
  44         clearCommandBuffer();
  45         SendCommand(&c);
  46         if ( !WaitForResponseTimeout(CMD_ACK, NULL, 7000) ) {
  47                 PrintAndLog("command execution time out");
  48                 return 1;
  49         }
  50
  51         switch ( rawsignal ){
  52                 case 0:
  53                 case 2: {
  54                         CmdPlot("");
  55                         CmdGrid("384");
  56                         getSamples("", true); break;
  57                 }
  58                 case 1: {
  59                         GetFromBigBuf(bits, sizeof(bits), 0);
  60                         UsbCommand response;
  61                         if ( !WaitForResponseTimeout(CMD_ACK, &response, 500) ) {
  62                                 if (g_debugMode) PrintAndLog("timeout while waiting for reply.");
  63                                 return 1;
  64                         }
  65
  66                         size_t size = sizeof(bits);
  67                         int err = manrawdecode(bits, &size, 1);
  68                         if (err){
  69                                 if (g_debugMode) PrintAndLog("DEBUG: Error - COTAG too many errors: %d", err);
  70                                 return 0;
  71                         }
  72                         PrintAndLog("%s", sprint_bin(bits, size));
  73                         setDemodBuf(bits, size, 0);
  74
  75                         // CmdCOTAGDemod();
  76                         break;
  77                 }
  78         }
  79         return 0;
  80 }
  81
  82 static command_t CommandTable[] = {
  83         {"help",      CmdHelp,         1, "This help"},
  84         {"demod",     CmdCOTAGDemod,   1, "Tries to decode a COTAG signal"},
  85         {"read",      CmdCOTAGRead,    0, "Attempt to read and extract tag data"},
  86         {NULL, NULL, 0, NULL}
  87 };
  88
  89 int CmdLFCOTAG(const char *Cmd) {
  90         clearCommandBuffer();
  91         CmdsParse(CommandTable, Cmd);
  92         return 0;
  93 }
  94
  95 int CmdHelp(const char *Cmd) {
  96         CmdsHelp(CommandTable);
  97         return 0;
  98 }