Minor refactoring

[proxmark3-svn] / client / scripting.c

diff --git a/client/scripting.c b/client/scripting.c
index f7c0b2a4aaaa3bbf2dfb5153b8a6677ec6126c5b..0ccdeeec7a8d497d5a288fef2fcc0e8998a0e865 100644 (file)
--- a/client/scripting.c
+++ b/client/scripting.c
@@ -17,7 +17,9 @@
 #include "scripting.h"
 #include "util.h"
 #include "nonce2key/nonce2key.h"
-
+#include "../common/iso15693tools.h"
+#include "../common/crc16.h"
+#include "aes.h"
 /**
  * The following params expected:
  *  UsbCommand c
@@ -150,8 +152,13 @@ static int l_nonce2key(lua_State *L){
 
     //Push the retval on the stack
     lua_pushinteger(L,retval);
+  
     //Push the key onto the stack
-    lua_pushlstring(L,(const char *) &key,sizeof(key));
+    uint8_t dest_key[8];
+    num_to_bytes(key,sizeof(dest_key),dest_key);
+
+    //printf("Pushing to lua stack: %012"llx"\n",key);
+    lua_pushlstring(L,(const char *) dest_key,sizeof(dest_key));
 
     return 2; //Two return values
 }
@@ -172,10 +179,18 @@ static int l_foobar(lua_State *L)
     printf("foobar called with %d arguments" , n);
     lua_settop(L, 0);
     printf("Arguments discarded, stack now contains %d elements", lua_gettop(L));
-    UsbCommand response =  {CMD_MIFARE_READBL, {1337, 1338, 1339}};
-    printf("Now returning a UsbCommand as a string");
-    lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand));
-    return 1;
+  
+    // todo: this is not used, where was it intended for?
+    // UsbCommand response =  {CMD_MIFARE_READBL, {1337, 1338, 1339}};
+  
+    printf("Now returning a uint64_t as a string");
+    uint64_t x = 0xDEADBEEF;
+    uint8_t destination[8];
+    num_to_bytes(x,sizeof(x),destination);
+    lua_pushlstring(L,(const char *)&x,sizeof(x));
+    lua_pushlstring(L,(const char *)destination,sizeof(destination));
+
+    return 2;
 }
 
 
@@ -201,6 +216,67 @@ static int l_CmdConsole(lua_State *L)
     return 0;
 }
 
+static int l_iso15693_crc(lua_State *L)
+{
+    //    uint16_t Iso15693Crc(uint8_t *v, int n);
+    size_t size;
+    const char *v = luaL_checklstring(L, 1, &size);
+    uint16_t retval = Iso15693Crc((uint8_t *) v, size);
+    lua_pushinteger(L, (int) retval);
+    return 1;
+}
+
+/*
+ Simple AES 128 cbc hook up to OpenSSL.
+ params:  key, input
+*/
+static int l_aes(lua_State *L)
+{
+       //Check number of arguments
+       int i;
+    size_t size;
+    const char *p_key = luaL_checklstring(L, 1, &size);
+    if(size != 32)  return returnToLuaWithError(L,"Wrong size of key, got %d bytes, expected 32", (int) size);
+
+    const char *p_encTxt = luaL_checklstring(L, 2, &size);
+    
+       unsigned char indata[16] = {0x00};
+       unsigned char outdata[16] = {0x00};
+    unsigned char aes_key[16] = {0x00};
+       unsigned char iv[16] = {0x00};
+       
+       // convert key to bytearray
+       for (i = 0; i < 32; i += 2) {
+               sscanf(&p_encTxt[i], "%02x", (unsigned int *)&indata[i / 2]);
+       }
+       
+       // convert input to bytearray
+       for (i = 0; i < 32; i += 2) {
+               sscanf(&p_key[i], "%02x", (unsigned int *)&aes_key[i / 2]);
+       }
+       
+       //AES_KEY key;
+    //AES_set_decrypt_key(aes_key, 128, &key);
+    //AES_cbc_encrypt(indata, outdata, sizeof(indata), &key, iv, AES_DECRYPT);
+
+    aes_context ctx;
+    aes_init(&ctx);
+    aes_setkey_enc(&ctx,(const unsigned char *)p_key,128);
+       aes_crypt_cbc(&ctx,AES_DECRYPT,sizeof(indata), iv, indata,outdata );
+    //Push decrypted array as a string
+       lua_pushlstring(L,(const char *)&outdata, sizeof(outdata));
+       return 1;// return 1 to signal one return value
+}
+
+static int l_crc16(lua_State *L)
+{
+       size_t size;
+       const char *p_str = luaL_checklstring(L, 1, &size);
+               
+       uint16_t retval = crc16_ccitt( (uint8_t*) p_str, size);
+    lua_pushinteger(L, (int) retval);
+    return 1;
+}
 
 /**
  * @brief Sets the lua path to include "./lualibs/?.lua", in order for a script to be
@@ -238,6 +314,9 @@ int set_pm3_libraries(lua_State *L)
         {"ukbhit",                      l_ukbhit},
         {"clearCommandBuffer",          l_clearCommandBuffer},
         {"console",                      l_CmdConsole},
+        {"iso15693_crc",                 l_iso15693_crc},
+               {"aes",                         l_aes},
+               {"crc16",                       l_crc16},
         {NULL, NULL}
     };