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

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2013 m h swende <martin at swende.se>
   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 // Some lua scripting glue to proxmark core.
   9 //-----------------------------------------------------------------------------
  10
  11 #include <lua.h>
  12 #include <lualib.h>
  13 #include <lauxlib.h>
  14 #include "proxmark3.h"
  15 #include "usb_cmd.h"
  16 #include "cmdmain.h"
  17 #include "scripting.h"
  18 /**
  19  * The following params expected:
  20  *  UsbCommand c
  21  *@brief l_SendCommand
  22  * @param L
  23  * @return
  24  */
  25 static int l_SendCommand(lua_State *L){
  26
  27     /*
  28      *
  29      The SendCommand (native) expects the following structure:
  30
  31      typedef struct {
  32       uint64_t cmd; //8 bytes
  33       uint64_t arg[3]; // 8*3 bytes = 24 bytes
  34       union {
  35         uint8_t  asBytes[USB_CMD_DATA_SIZE]; // 1 byte * 512 = 512 bytes (OR)
  36         uint32_t asDwords[USB_CMD_DATA_SIZE/4]; // 4 byte * 128 = 512 bytes
  37       } d;
  38     } PACKED UsbCommand;
  39
  40     ==> A 544 byte buffer will do.
  41     **/
  42     //Pop cmd
  43     UsbCommand *c = (UsbCommand *)lua_touserdata(L, 1);
  44     luaL_argcheck(L, c != NULL, 1, "'UsbCommand' expected");
  45     SendCommand(c);
  46     return 0;
  47 }
  48 /**
  49  * @brief The following params expected:
  50  * uint32_t cmd
  51  * size_t ms_timeout
  52  * @param L
  53  * @return
  54  */
  55 static int l_WaitForResponseTimeout(lua_State *L){
  56
  57     //pop cmd
  58     uint32_t cmd = luaL_checkunsigned(L,1);
  59     printf("in l_WaitForResponseTimeout, got cmd 0x%0x\n",(int) cmd);
  60     //UsbCommand response;
  61
  62     //We allocate the usbcommand as userdata on the Lua-stack
  63     size_t nbytes = sizeof(UsbCommand);
  64
  65     UsbCommand *response = (UsbCommand *)lua_newuserdata(L, nbytes);
  66
  67     size_t ms_timeout = 2000;
  68     //Did the user send a timeout ?
  69     //Check if the current top of stack is an integer
  70
  71     if(lua_isnumber( L, 2))
  72     {
  73         printf("You sent a timout-value\n");
  74         ms_timeout = luaL_checkunsigned(L,2);
  75     }
  76     printf("Timeout set to %dms\n" , (int) ms_timeout);
  77
  78     if(WaitForResponseTimeout(cmd, response, ms_timeout))
  79     {
  80         //Return the UsbCommand as userdata
  81         //the usbcommand is already on the stack
  82         // return 1 to signal one return value
  83         return 1;
  84     }else
  85     {
  86         //Don't return the UsbCommand. Pop it.
  87         lua_pop(L,-1);
  88         //Push a Nil instead
  89         lua_pushnil(L);
  90         return 1;
  91     }
  92 }
  93 static int l_nonce2key(lua_State *L){ return CmdHF14AMfRdSc(luaL_checkstring(L, 1));}
  94 static int l_PrintAndLog(lua_State *L){ return CmdHF14AMfDump(luaL_checkstring(L, 1));}
  95
  96 void set_pm3_libraries(lua_State *L)
  97 {
  98     static const luaL_Reg libs[] = {
  99         {"SendCommand",                 l_SendCommand},
 100         {"WaitForResponseTimeout",      l_WaitForResponseTimeout},
 101         {"nonce2key",                   l_nonce2key},
 102         {"PrintAndLog",                 l_PrintAndLog},
 103         {NULL, NULL}
 104     };
 105
 106     lua_pushglobaltable(L);
 107     // Core library is in this table. Contains '
 108     //this is 'pm3' table
 109     lua_newtable(L);
 110
 111     //Put the function into the hash table.
 112     for (int i = 0; libs[i].name; i++) {
 113         lua_pushcfunction(L, libs[i].func);
 114         lua_setfield(L, -2, libs[i].name);//set the name, pop stack
 115     }
 116     //Name of 'core'
 117     lua_setfield(L, -2, "core");
 118
 119     //-- remove the global environment table from the stack
 120     lua_pop(L, 1);
 121     return 1;
 122 }