git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdscript.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 <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <limits.h>
  15 #include <sys/types.h>
  16 #include <dirent.h>
  17
  18 #include "proxmark3.h"
  19 #include "scripting.h"
  20 #include "data.h"
  21 #include "ui.h"
  22 #include "graph.h"
  23 #include "cmdparser.h"
  24 #include "cmdmain.h"
  25 #include "cmdscript.h"
  26 #include "cmdhfmf.h"
  27 #include "pm3_binlib.h"
  28 #include "pm3_bitlib.h"
  29 #include <lua.h>
  30 #include <lualib.h>
  31 #include <lauxlib.h>
  32
  33
  34 static int CmdHelp(const char *Cmd);
  35 static int CmdList(const char *Cmd);
  36 static int CmdRun(const char *Cmd);
  37
  38 command_t CommandTable[] =
  39 {
  40   {"help",  CmdHelp, 1, "This help"},
  41   {"list",  CmdList, 1, "List available scripts"},
  42   {"run",   CmdRun,  1, "<name> -- Execute a script"},
  43   {NULL, NULL, 0, NULL}
  44 };
  45
  46 int str_ends_with(const char * str, const char * suffix) {
  47
  48   if( str == NULL || suffix == NULL )
  49     return 0;
  50
  51   size_t str_len = strlen(str);
  52   size_t suffix_len = strlen(suffix);
  53
  54   if(suffix_len > str_len)
  55     return 0;
  56
  57   return 0 == strncmp( str + str_len - suffix_len, suffix, suffix_len );
  58 }
  59 /**
  60  * Shows some basic help
  61  * @brief CmdHelp
  62  * @param Cmd
  63  * @return
  64  */
  65 int CmdHelp(const char * Cmd)
  66 {
  67     PrintAndLog("This is a feature to run Lua-scripts. You can place lua-scripts within the ´client/scripts/´ folder.");
  68     return 0;
  69 }
  70
  71 /**
  72 * Generate list of available commands, what it does is
  73 * generate a file listing of the script-directory for files
  74 * ending with .lua
  75 *
  76 */
  77 int CmdList(const char *Cmd)
  78 {
  79     struct dirent *ep;
  80     DIR *dp = opendir ("./scripts/");
  81         if ( dp == NULL ) {
  82                 PrintAndLog ("Couldn't open the scripts-directory");
  83                 return 1;
  84         }
  85
  86         while ((ep = readdir (dp)) != NULL)
  87         {
  88                 if(str_ends_with(ep->d_name, ".lua"))
  89                         PrintAndLog("%-21s %s", ep->d_name, "A script file");
  90         }
  91         (void) closedir (dp);
  92     return 0;
  93 }
  94
  95
  96 /**
  97  * Finds a matching script-file
  98  * @brief CmdScript
  99  * @param Cmd
 100  * @return
 101  */
 102 int CmdScript(const char *Cmd) {
 103         clearCommandBuffer();
 104         CmdsParse(CommandTable, Cmd);
 105         return 0;
 106 }
 107 /**
 108  * Utility to check the ending of a string (used to check file suffix)
 109  */
 110 bool endsWith (char* base, char* str) {
 111     int blen = strlen(base);
 112     int slen = strlen(str);
 113     return (blen >= slen) && (0 == strcmp(base + blen - slen, str));
 114 }
 115
 116 /**
 117  * @brief CmdRun - executes a script file.
 118  * @param argc
 119  * @param argv
 120  * @return
 121  */
 122 int CmdRun(const char *Cmd)
 123 {
 124     // create new Lua state
 125     lua_State *lua_state;
 126     lua_state = luaL_newstate();
 127
 128     // load Lua libraries
 129     luaL_openlibs(lua_state);
 130
 131     //Sets the pm3 core libraries, that go a bit 'under the hood'
 132     set_pm3_libraries(lua_state);
 133
 134     //Add the 'bin' library
 135     set_bin_library(lua_state);
 136
 137         //Add the 'bit' library
 138         set_bit_library(lua_state);
 139
 140     char script_name[128] = {0};
 141     char arguments[256] = {0};
 142
 143     int name_len = 0;
 144     int arg_len = 0;
 145     sscanf(Cmd, "%127s%n %255[^\n\r]%n", script_name,&name_len, arguments, &arg_len);
 146
 147     char *suffix = "";
 148     if(!endsWith(script_name,".lua"))
 149     {
 150         suffix = ".lua";
 151     }
 152
 153     char buf[256];
 154     snprintf(buf, sizeof buf, "./scripts/%s%s", script_name, suffix);
 155
 156     printf("--- Executing: %s, args'%s'\n", buf, arguments);
 157
 158     // run the Lua script
 159
 160     int error = luaL_loadfile(lua_state, buf);
 161     if(!error)
 162     {
 163         lua_pushstring(lua_state, arguments);
 164         lua_setglobal(lua_state, "args");
 165
 166         //Call it with 0 arguments
 167          error = lua_pcall(lua_state, 0, LUA_MULTRET, 0); // once again, returns non-0 on error,
 168     }
 169     if(error) // if non-0, then an error
 170     {
 171         // the top of the stack should be the error string
 172         if (!lua_isstring(lua_state, lua_gettop(lua_state)))
 173             printf( "Error - but no error (?!)");
 174
 175         // get the top of the stack as the error and pop it off
 176         const char * str = lua_tostring(lua_state, lua_gettop(lua_state));
 177         lua_pop(lua_state, 1);
 178         puts(str);
 179     }
 180
 181     //luaL_dofile(lua_state, buf);
 182     // close the Lua state
 183     lua_close(lua_state);
 184     printf("\n-----Finished\n");
 185     return 0;
 186 }
 187