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806dc075 1//-----------------------------------------------------------------------------
a0655c45 2// Copyright (C) 2013 m h swende <martin at swende.se>
806dc075 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//-----------------------------------------------------------------------------
a0655c45 8// Some lua scripting glue to proxmark core.
806dc075 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"
a0655c45 19#include "scripting.h"
806dc075 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"
f057bddb 27#include "pm3_binlib.h"
77cd612f 28#include "pm3_bitlib.h"
806dc075 29#include <lua.h>
30#include <lualib.h>
31#include <lauxlib.h>
32
33
806dc075 34static int CmdHelp(const char *Cmd);
35static int CmdList(const char *Cmd);
36static int CmdRun(const char *Cmd);
37
38command_t CommandTable[] =
39{
40 {"help", CmdHelp, 1, "This help"},
a0655c45 41 {"list", CmdList, 1, "List available scripts"},
42 {"run", CmdRun, 1, "<name> -- Execute a script"},
806dc075 43 {NULL, NULL, 0, NULL}
44};
45
46int 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 */
65int CmdHelp(const char * Cmd)
66{
5def0b3c 67 PrintAndLog("This is a feature to run Lua-scripts. You can place lua-scripts within the ´client/scripts/´ folder.");
42daa759 68 return 0;
806dc075 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*/
76int CmdList(const char *Cmd)
77{
78 DIR *dp;
79 struct dirent *ep;
80 dp = opendir ("./scripts/");
a403a559 81
806dc075 82 if (dp != NULL)
83 {
42daa759 84 while ((ep = readdir (dp)) != NULL)
806dc075 85 {
e6432f05 86 if(str_ends_with(ep->d_name, ".lua"))
5def0b3c 87 PrintAndLog("%-21s %s", ep->d_name, "A script file");
806dc075 88 }
89 (void) closedir (dp);
90 }
91 else
a403a559 92 PrintAndLog ("Couldn't open the scripts-directory");
806dc075 93 return 0;
94}
95/**
96 * Finds a matching script-file
97 * @brief CmdScript
98 * @param Cmd
99 * @return
100 */
4c36581b 101int CmdScript(const char *Cmd) {
102 clearCommandBuffer();
103 CmdsParse(CommandTable, Cmd);
104 return 0;
806dc075 105}
a403a559 106/**
107 * Utility to check the ending of a string (used to check file suffix)
108 */
109bool endsWith (char* base, char* str) {
110 int blen = strlen(base);
111 int slen = strlen(str);
112 return (blen >= slen) && (0 == strcmp(base + blen - slen, str));
113}
806dc075 114
115/**
116 * @brief CmdRun - executes a script file.
117 * @param argc
118 * @param argv
119 * @return
120 */
121int CmdRun(const char *Cmd)
122{
123 // create new Lua state
124 lua_State *lua_state;
125 lua_state = luaL_newstate();
126
127 // load Lua libraries
5a92cb52 128 luaL_openlibs(lua_state);
a0655c45 129
130 //Sets the pm3 core libraries, that go a bit 'under the hood'
131 set_pm3_libraries(lua_state);
132
f057bddb 133 //Add the 'bin' library
134 set_bin_library(lua_state);
135
77cd612f 136 //Add the 'bit' library
137 set_bit_library(lua_state);
a403a559 138
30a5d355 139 char script_name[128] = {0};
140 char arguments[256] = {0};
a403a559 141
142 int name_len = 0;
143 int arg_len = 0;
144 sscanf(Cmd, "%127s%n %255[^\n\r]%n", script_name,&name_len, arguments, &arg_len);
145
146 char *suffix = "";
147 if(!endsWith(script_name,".lua"))
148 {
149 suffix = ".lua";
150 }
806dc075 151
152 char buf[256];
a403a559 153 snprintf(buf, sizeof buf, "./scripts/%s%s", script_name, suffix);
154
5def0b3c 155 printf("--- Executing: %s, args'%s'\n", buf, arguments);
806dc075 156
806dc075 157 // run the Lua script
a0655c45 158
159 int error = luaL_loadfile(lua_state, buf);
160 if(!error)
161 {
a403a559 162 lua_pushstring(lua_state, arguments);
163 lua_setglobal(lua_state, "args");
164
165 //Call it with 0 arguments
a0655c45 166 error = lua_pcall(lua_state, 0, LUA_MULTRET, 0); // once again, returns non-0 on error,
167 }
168 if(error) // if non-0, then an error
169 {
170 // the top of the stack should be the error string
171 if (!lua_isstring(lua_state, lua_gettop(lua_state)))
172 printf( "Error - but no error (?!)");
173
174 // get the top of the stack as the error and pop it off
175 const char * str = lua_tostring(lua_state, lua_gettop(lua_state));
176 lua_pop(lua_state, 1);
42daa759 177 puts(str);
a0655c45 178 }
179
180 //luaL_dofile(lua_state, buf);
806dc075 181 // close the Lua state
182 lua_close(lua_state);
96e7a3a5 183 printf("\n-----Finished\n");
42daa759 184 return 0;
806dc075 185}
186
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