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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 "ui.h" | |
21 | #include "graph.h" | |
22 | #include "cmdparser.h" | |
23 | #include "cmdmain.h" | |
24 | #include "cmdscript.h" | |
25 | #include "cmdhfmf.h" | |
26 | #include "pm3_binlib.h" | |
27 | #include "pm3_bitlib.h" | |
28 | #include <lua.h> | |
29 | #include <lualib.h> | |
30 | #include <lauxlib.h> | |
31 | ||
32 | static int CmdHelp(const char *Cmd); | |
33 | static int CmdList(const char *Cmd); | |
34 | static int CmdRun(const char *Cmd); | |
35 | ||
36 | command_t CommandTable[] = | |
37 | { | |
38 | {"help", CmdHelp, 1, "This help"}, | |
39 | {"list", CmdList, 1, "List available scripts"}, | |
40 | {"run", CmdRun, 1, "<name> -- Execute a script"}, | |
41 | {NULL, NULL, 0, NULL} | |
42 | }; | |
43 | ||
44 | int str_ends_with(const char * str, const char * suffix) { | |
45 | ||
46 | if( str == NULL || suffix == NULL ) | |
47 | return 0; | |
48 | ||
49 | size_t str_len = strlen(str); | |
50 | size_t suffix_len = strlen(suffix); | |
51 | ||
52 | if(suffix_len > str_len) | |
53 | return 0; | |
54 | ||
55 | return 0 == strncmp( str + str_len - suffix_len, suffix, suffix_len ); | |
56 | } | |
57 | /** | |
58 | * Shows some basic help | |
59 | * @brief CmdHelp | |
60 | * @param Cmd | |
61 | * @return | |
62 | */ | |
63 | int CmdHelp(const char * Cmd) | |
64 | { | |
65 | PrintAndLog("This is a feature to run Lua-scripts. You can place lua-scripts within the scripts/-folder. "); | |
66 | return 0; | |
67 | } | |
68 | ||
69 | /** | |
70 | * Generate list of available commands, what it does is | |
71 | * generate a file listing of the script-directory for files | |
72 | * ending with .lua | |
73 | */ | |
74 | int CmdList(const char *Cmd) | |
75 | { | |
76 | DIR *dp; | |
77 | struct dirent *ep; | |
78 | char const * exedir = get_my_executable_directory(); | |
79 | if (exedir == NULL) | |
80 | return 0; | |
81 | char script_directory_path[strlen(exedir) + strlen(LUA_SCRIPTS_DIRECTORY) + 1]; | |
82 | strcpy(script_directory_path, exedir); | |
83 | strcat(script_directory_path, LUA_SCRIPTS_DIRECTORY); | |
84 | dp = opendir(script_directory_path); | |
85 | ||
86 | if (dp != NULL) | |
87 | { | |
88 | while ((ep = readdir (dp)) != NULL) | |
89 | { | |
90 | if(str_ends_with(ep->d_name, ".lua")) | |
91 | PrintAndLog("%-16s %s", ep->d_name, "A script file"); | |
92 | } | |
93 | (void) closedir (dp); | |
94 | } | |
95 | else | |
96 | PrintAndLog ("Couldn't open the scripts-directory"); | |
97 | return 0; | |
98 | } | |
99 | /** | |
100 | * Finds a matching script-file | |
101 | * @brief CmdScript | |
102 | * @param Cmd | |
103 | * @return | |
104 | */ | |
105 | int CmdScript(const char *Cmd) | |
106 | { | |
107 | CmdsParse(CommandTable, Cmd); | |
108 | return 0; | |
109 | } | |
110 | /** | |
111 | * Utility to check the ending of a string (used to check file suffix) | |
112 | */ | |
113 | bool endsWith (char* base, char* str) { | |
114 | int blen = strlen(base); | |
115 | int slen = strlen(str); | |
116 | return (blen >= slen) && (0 == strcmp(base + blen - slen, str)); | |
117 | } | |
118 | ||
119 | /** | |
120 | * @brief CmdRun - executes a script file. | |
121 | * @param argc | |
122 | * @param argv | |
123 | * @return | |
124 | */ | |
125 | int CmdRun(const char *Cmd) | |
126 | { | |
127 | // create new Lua state | |
128 | lua_State *lua_state; | |
129 | lua_state = luaL_newstate(); | |
130 | ||
131 | // load Lua libraries | |
132 | luaL_openlibs(lua_state); | |
133 | ||
134 | //Sets the pm3 core libraries, that go a bit 'under the hood' | |
135 | set_pm3_libraries(lua_state); | |
136 | ||
137 | //Add the 'bin' library | |
138 | set_bin_library(lua_state); | |
139 | ||
140 | //Add the 'bit' library | |
141 | set_bit_library(lua_state); | |
142 | ||
143 | char script_name[128] = {0}; | |
144 | char arguments[256] = {0}; | |
145 | ||
146 | int name_len = 0; | |
147 | int arg_len = 0; | |
148 | sscanf(Cmd, "%127s%n %255[^\n\r]%n", script_name,&name_len, arguments, &arg_len); | |
149 | ||
150 | char *suffix = ""; | |
151 | if(!endsWith(script_name,".lua")) | |
152 | { | |
153 | suffix = ".lua"; | |
154 | } | |
155 | ||
156 | char script_path[strlen(get_my_executable_directory()) + strlen(LUA_SCRIPTS_DIRECTORY) + strlen(script_name) + strlen(suffix) + 1]; | |
157 | strcpy(script_path, get_my_executable_directory()); | |
158 | strcat(script_path, LUA_SCRIPTS_DIRECTORY); | |
159 | strcat(script_path, script_name); | |
160 | strcat(script_path, suffix); | |
161 | ||
162 | printf("--- Executing: %s%s, args '%s'\n", script_name, suffix, arguments); | |
163 | ||
164 | ||
165 | ||
166 | // run the Lua script | |
167 | ||
168 | int error = luaL_loadfile(lua_state, script_path); | |
169 | if(!error) | |
170 | { | |
171 | ||
172 | lua_pushstring(lua_state, arguments); | |
173 | lua_setglobal(lua_state, "args"); | |
174 | ||
175 | //Call it with 0 arguments | |
176 | error = lua_pcall(lua_state, 0, LUA_MULTRET, 0); // once again, returns non-0 on error, | |
177 | } | |
178 | if(error) // if non-0, then an error | |
179 | { | |
180 | // the top of the stack should be the error string | |
181 | if (!lua_isstring(lua_state, lua_gettop(lua_state))) | |
182 | printf( "Error - but no error (?!)"); | |
183 | ||
184 | // get the top of the stack as the error and pop it off | |
185 | const char * str = lua_tostring(lua_state, lua_gettop(lua_state)); | |
186 | lua_pop(lua_state, 1); | |
187 | puts(str); | |
188 | } | |
189 | ||
190 | //luaL_dofile(lua_state, buf); | |
191 | // close the Lua state | |
192 | lua_close(lua_state); | |
193 | printf("\n-----Finished\n"); | |
194 | return 0; | |
195 | } | |
196 |