FIX: @Aczid suggested this to fix a Coverity scan warning.

[proxmark3-svn] / client / scripting.c

diff --git a/client/scripting.c b/client/scripting.c
index 7ac78394b3d5f98ae29f202fc9cfbaf7a37113dd..64fb2a8fe0da78afea2f8f425b6ceea162fd5998 100644 (file)
--- a/client/scripting.c
+++ b/client/scripting.c
@@ -1,5 +1,6 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 2013 m h swende <martin at swende.se>
 //-----------------------------------------------------------------------------
 // Copyright (C) 2013 m h swende <martin at swende.se>

+// Modified 2015,2016, iceman 

 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of
 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of


@@ -7,21 +8,8 @@
 //-----------------------------------------------------------------------------
 // Some lua scripting glue to proxmark core.
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // Some lua scripting glue to proxmark core.
 //-----------------------------------------------------------------------------

-
-#include <lua.h>
-#include <lualib.h>
-#include <lauxlib.h>
-#include "proxmark3.h"
-#include "usb_cmd.h"
-#include "cmdmain.h"

 #include "scripting.h"
 #include "scripting.h"

-#include "util.h"
-#include "nonce2key/nonce2key.h"
-#include "../common/iso15693tools.h"
-#include "../common/crc16.h"
-#include "../common/crc64.h"
-#include "../common/sha1.h"
-#include "aes.h"
+

 /**
  * The following params expected:
  *  UsbCommand c
 /**
  * The following params expected:
  *  UsbCommand c


@@ -51,12 +39,11 @@ static int l_SendCommand(lua_State *L){
     const char *data = luaL_checklstring(L, 1, &size);
     if(size != sizeof(UsbCommand))
     {
     const char *data = luaL_checklstring(L, 1, &size);
     if(size != sizeof(UsbCommand))
     {

-        printf("Got data size %d, expected %d" , (int) size,(int) sizeof(UsbCommand));
+               printf("Got data size %d, expected %d" , (int) size,(int) sizeof(UsbCommand));

         lua_pushstring(L,"Wrong data size");
         return 1;
     }
 
         lua_pushstring(L,"Wrong data size");
         return 1;
     }
 

-//    UsbCommand c = (*data);

     SendCommand((UsbCommand* )data);
     return 0; // no return values
 }
     SendCommand((UsbCommand* )data);
     return 0; // no return values
 }


@@ -95,11 +82,10 @@ static int l_WaitForResponseTimeout(lua_State *L){
     }
 
     UsbCommand response;
     }
 
     UsbCommand response;

-

     if(WaitForResponseTimeout(cmd, &response, ms_timeout))
     {
         //Push it as a string
     if(WaitForResponseTimeout(cmd, &response, ms_timeout))
     {
         //Push it as a string

-         lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand));
+         lua_pushlstring(L,(const char *)&response, sizeof(UsbCommand));

 
         return 1;// return 1 to signal one return value
     }else{
 
         return 1;// return 1 to signal one return value
     }else{


@@ -228,6 +214,27 @@ static int l_iso15693_crc(lua_State *L)
     return 1;
 }
 
     return 1;
 }
 

+static int l_iso14443b_crc(lua_State *L)
+{
+       /* void ComputeCrc14443(int CrcType,
+                     const unsigned char *Data, int Length,
+                     unsigned char *TransmitFirst,
+                     unsigned char *TransmitSecond)
+       */
+    size_t size = 0;   
+    const char *data = luaL_checklstring(L, 1, &size);
+
+       unsigned char buf[USB_CMD_DATA_SIZE] = {0x00};
+       
+       for (int i = 0; i < size; i += 2)
+               sscanf(&data[i], "%02x", (unsigned int *)&buf[i / 2]);  
+       
+       size /= 2;      
+       ComputeCrc14443(CRC_14443_B, buf, size, &buf[size], &buf[size+1]);      
+    lua_pushlstring(L, (const char *)&buf, size+2);
+    return 1;
+}
+

 /*
  Simple AES 128 cbc hook up to OpenSSL.
  params:  key, input
 /*
  Simple AES 128 cbc hook up to OpenSSL.
  params:  key, input


@@ -346,6 +353,16 @@ static int l_aes128encrypt_ecb(lua_State *L)
        return 1;// return 1 to signal one return value
 }
 
        return 1;// return 1 to signal one return value
 }
 

+static int l_crc8legic(lua_State *L)
+{
+       size_t size;
+       const char *p_str = luaL_checklstring(L, 1, &size);
+
+       uint16_t retval = CRC8Legic( (uint8_t*) p_str, size);
+    lua_pushinteger(L, (int) retval);
+    return 1;
+}
+

 static int l_crc16(lua_State *L)
 {
        size_t size;
 static int l_crc16(lua_State *L)
 {
        size_t size;


@@ -388,6 +405,64 @@ static int l_sha1(lua_State *L)
     return 1;  
 }
 
     return 1;  
 }
 

+static int l_reveng_models(lua_State *L){
+
+       // This array needs to be adjusted if RevEng adds more crc-models.
+       char *models[100];
+       int count = 0;
+       int in_width = luaL_checkinteger(L, 1);
+       
+       if( in_width > 89 ) return returnToLuaWithError(L,"Width cannot exceed 89, got %d", in_width);
+
+       // This array needs to be adjusted if RevEng adds more crc-models.
+       uint8_t width[100];
+       width[0] = (uint8_t)in_width;
+       int ans = GetModels(models, &count, width);
+       if (!ans) return 0;
+       
+       lua_newtable(L);
+       
+       for (int i = 0; i < count; i++){
+               lua_pushstring(L,  (const char*)models[i]);
+               lua_rawseti(L,-2,i+1);
+               free(models[i]);
+       }
+
+       return 1;
+}
+
+//Called with 4 parameters.
+// inModel   ,string containing the crc model name: 'CRC-8'
+// inHexStr  ,string containing the hex representation of the data that will be used for CRC calculations.
+// reverse   ,int 0/1  (bool) if 1, calculate the reverse CRC
+// endian    ,char,  'B','b','L','l','t','r' describing if Big-Endian or Little-Endian should be used in different combinations.
+//
+// outputs:  string with hex representation of the CRC result
+static int l_reveng_RunModel(lua_State *L){
+       //-c || -v
+       //inModel = valid model name string - CRC-8
+       //inHexStr = input hex string to calculate crc on
+       //reverse = reverse calc option if true
+       //endian = {0 = calc default endian input and output, b = big endian input and output, B = big endian output, r = right justified
+       //          l = little endian input and output, L = little endian output only, t = left justified}
+       //result = calculated crc hex string    
+       char result[50];
+       
+       const char *inModel = luaL_checkstring(L, 1);
+       const char *inHexStr = luaL_checkstring(L, 2);
+    bool reverse =  lua_toboolean(L, 3);
+       const char endian = luaL_checkstring(L, 4)[0];
+
+       //PrintAndLog("mod: %s, hex: %s, rev %d", inModel, inHexStr, reverse);
+       //    int RunModel(char *inModel, char *inHexStr, bool reverse, char endian, char *result)
+       int ans = RunModel( (char *)inModel, (char *)inHexStr, reverse, endian, result);
+       if (!ans)       
+               return returnToLuaWithError(L,"Reveng failed");
+
+       lua_pushstring(L, (const char*)result); 
+       return 1;
+}
+

 /**
  * @brief Sets the lua path to include "./lualibs/?.lua", in order for a script to be
  * able to do "require('foobar')" if foobar.lua is within lualibs folder.
 /**
  * @brief Sets the lua path to include "./lualibs/?.lua", in order for a script to be
  * able to do "require('foobar')" if foobar.lua is within lualibs folder.


@@ -412,7 +487,6 @@ int setLuaPath( lua_State* L, const char* path )
        return 0; // all done!
 }
 
        return 0; // all done!
 }
 

-

 int set_pm3_libraries(lua_State *L)
 {
 
 int set_pm3_libraries(lua_State *L)
 {
 


@@ -426,13 +500,17 @@ int set_pm3_libraries(lua_State *L)
         {"clearCommandBuffer",          l_clearCommandBuffer},
                {"console",                     l_CmdConsole},
                {"iso15693_crc",                l_iso15693_crc},
         {"clearCommandBuffer",          l_clearCommandBuffer},
                {"console",                     l_CmdConsole},
                {"iso15693_crc",                l_iso15693_crc},

+               {"iso14443b_crc",                               l_iso14443b_crc},

                {"aes128_decrypt",              l_aes128decrypt_cbc},
                {"aes128_decrypt_ecb",          l_aes128decrypt_ecb},
                {"aes128_encrypt",              l_aes128encrypt_cbc},           
                {"aes128_encrypt_ecb",          l_aes128encrypt_ecb},
                {"aes128_decrypt",              l_aes128decrypt_cbc},
                {"aes128_decrypt_ecb",          l_aes128decrypt_ecb},
                {"aes128_encrypt",              l_aes128encrypt_cbc},           
                {"aes128_encrypt_ecb",          l_aes128encrypt_ecb},

+               {"crc8legic",                                   l_crc8legic},

                {"crc16",                       l_crc16},
                {"crc64",                       l_crc64},
                {"sha1",                                                l_sha1},
                {"crc16",                       l_crc16},
                {"crc64",                       l_crc64},
                {"sha1",                                                l_sha1},

+               {"reveng_models",                               l_reveng_models},
+               {"reveng_runmodel",                             l_reveng_RunModel},

         {NULL, NULL}
     };
 
         {NULL, NULL}
     };