在开发软件的时候，我们都会在项目上线时候对代码进行加密，用来防止被不法分子盗走牟利。不同的语言有不同的加密方式，比较出名的有加壳，代码混淆等。在Lua开发cocos2dx的时候，框架会有提供加密的脚本。下面我说说加密windows的步骤
1.要知道要加密的源码的存放路径，并指定备份路径
2.把代码拷贝到备份路径
3.对所有的脚本进行去bom处理
4.用php命令compile_scripts.php进行加密处理。
根据以上的四点，我们下面贴出UTF8 去bom的代码和加密的整体代码
1.UTF-8
#! /usr/bin/python
# -*- coding: utf-8 -*-
import os
import sys
import codecs
def convert(dirname, filename):
if os.path.splitext(filename)[1] in ['.txt', '.py,', '.lua', '.sh']:
path = os.path.join(dirname, filename)
print 'converting %s'%(path)
f = open(path, 'rb')
content = f.read(3)
if content != 'xEFxBBxBF':
print '%s is not utf-8 bom'%(path)
return
content = f.read()
f.close()
f = open(path, 'wb')
f.write(content)
f.close()
print 'convert %s finish'%(path)
def useage():
if len(sys.argv) == 1:
print 'useage: utf8 file or dir...'
return True
def exist_error(f):
if not os.path.exists(f):
print 'error: %s is not exist'%(f)
return True
def main():
if useage():
return
for f in sys.argv[1:]:
if exist_error(f):
break
if os.path.isdir(f):
for root, dirs, files in os.walk(f):
for i in files:
convert(root, i)
else:
convert('', f)
if __name__ == '__main__':
main()
2.compile_scripts.php
<?php
define('DS', DIRECTORY_SEPARATOR);
define('LUAJIT', true);
class LuaPackager
{
private $quiet = false;
private $packageName = '';
private $rootdir = '';
private $rootdirLength = 0;
private $suffixName = 'zip';
private $files = array();
private $modules = array();
private $excludes = array();
function __construct($config)
{
$this->quiet = $config['quiet'];
$this->rootdir = realpath($config['srcdir']);
$this->rootdirLength = strlen($this->rootdir) + 1;
$this->packageName = trim($config['packageName'], '.');
$this->suffixName = $config['suffixName'];
$this->excludes = $config['excludes'];
if (!empty($this->packageName))
{
$this->packageName = $this->packageName . '.';
}
}
function dumpZip($outputFileBasename)
{
$this->files = array();
$this->modules = array();
if (!$this->quiet)
{
print("compile script files
");
}
$this->compile();
if (empty($this->files))
{
printf("error.
ERROR: not found script files in %s
", $this->rootdir);
return;
}
$zipFilename = $outputFileBasename . '.' . $this->suffixName;
$zip = new ZipArchive();
if ($zip->open($zipFilename, ZIPARCHIVE::OVERWRITE | ZIPARCHIVE::CM_STORE))
{
if (!$this->quiet)
{
printf("create ZIP bundle file: %s
", $zipFilename);
}
foreach ($this->modules as $module)
{
$zip->addFromString($module['moduleName'], $module['bytes']);
}
$zip->close();
if (!$this->quiet)
{
printf("done.
");
}
}
if (!$this->quiet)
{
print <<<EOT
### HOW TO USE ###
1. Add code to your lua script:
CCLuaLoadChunksFromZip("${zipFilename}")
EOT;
}
}
function dump($outputFileBasename)
{
$this->files = array();
$this->modules = array();
if (!$this->quiet)
{
print("compile script files
");
}
$this->compile();
if (empty($this->files))
{
printf("error.
ERROR: not found script files in %s
", $this->rootdir);
return;
}
$headerFilename = $outputFileBasename . '.h';
if (!$this->quiet)
{
printf("create C header file: %s
", $headerFilename);
}
file_put_contents($headerFilename, $this->renderHeaderFile($outputFileBasename));
$sourceFilename = $outputFileBasename . '.c';
if (!$this->quiet)
{
printf("create C source file: %s
", $sourceFilename);
}
file_put_contents($sourceFilename, $this->renderSourceFile($outputFileBasename));
if (!$this->quiet)
{
printf("done.
");
}
$outputFileBasename = basename($outputFileBasename);
print <<<EOT
### HOW TO USE ###
1. Add code to AppDelegate.cpp:
extern "C" {
#include "${outputFileBasename}.h"
}
2. Add code to AppDelegate::applicationDidFinishLaunching()
CCScriptEngineProtocol* pEngine = CCScriptEngineManager::sharedManager()->getScriptEngine();
luaopen_${outputFileBasename}(pEngine->getLuaState());
pEngine->executeString("require("main")");
EOT;
}
private function compile()
{
if (file_exists($this->rootdir) && is_dir($this->rootdir))
{
$this->files = $this->getFiles($this->rootdir);
}
foreach ($this->files as $path)
{
$filename = substr($path, $this->rootdirLength);
$fi = pathinfo($filename);
if ($fi['extension'] != 'lua') continue;
$basename = ltrim($fi['dirname'] . DS . $fi['filename'], '/\.');
$moduleName = $this->packageName . str_replace(DS, '.', $basename);
$found = false;
foreach ($this->excludes as $k => $v)
{
if (substr($moduleName, 0, strlen($v)) == $v)
{
$found = true;
break;
}
}
if ($found) continue;
if (!$this->quiet)
{
printf(' compile module: %s...', $moduleName);
}
$bytes = $this->compileFile($path);
if ($bytes == false)
{
print("error.
");
}
else
{
if (!$this->quiet)
{
print("ok.
");
}
$bytesName = 'lua_m_' . strtolower(str_replace('.', '_', $moduleName));
$this->modules[] = array(
'moduleName' => $moduleName,
'bytesName' => $bytesName,
'functionName' => 'luaopen_' . $bytesName,
'basename' => $basename,
'bytes' => $bytes,
);
}
}
}
private function getFiles($dir)
{
$files = array();
$dir = rtrim($dir, "/\") . DS;
$dh = opendir($dir);
if ($dh == false) { return $files; }
while (($file = readdir($dh)) !== false)
{
if ($file{0} == '.') { continue; }
$path = $dir . $file;
if (is_dir($path))
{
$files = array_merge($files, $this->getFiles($path));
}
elseif (is_file($path))
{
$files[] = $path;
}
}
closedir($dh);
return $files;
}
private function compileFile($path)
{
$tmpfile = $path . '.bytes';
if (file_exists($tmpfile)) unlink($tmpfile);
if (LUAJIT)
{
$command = sprintf('luajit -b -s "%s" "%s"', $path, $tmpfile);
}
else
{
$command = sprintf('luac -o "%s" "%s"', $tmpfile, $path);
}
passthru($command);
if (!file_exists($tmpfile)) return false;
$bytes = file_get_contents($tmpfile);
unlink($tmpfile);
return $bytes;
}
private function renderHeaderFile($outputFileBasename)
{
$headerSign = '__LUA_MODULES_' . strtoupper(md5(time())) . '_H_';
$outputFileBasename = basename($outputFileBasename);
$contents = array();
$contents[] = <<<EOT
/* ${outputFileBasename}.h */
#ifndef ${headerSign}
#define ${headerSign}
#if __cplusplus
extern "C" {
#endif
#include "lua.h"
void luaopen_${outputFileBasename}(lua_State* L);
#if __cplusplus
}
#endif
EOT;
$contents[] = '/*';
foreach ($this->modules as $module)
{
$contents[] = sprintf('int %s(lua_State* L);', $module['functionName']);
}
$contents[] = '*/';
$contents[] = <<<EOT
#endif /* ${headerSign} */
EOT;
return implode("
", $contents);
}
private function renderSourceFile($outputFileBasename)
{
$outputFileBasename = basename($outputFileBasename);
$contents = array();
$contents[] = <<<EOT
/* ${outputFileBasename}.c */
#include "lua.h"
#include "lauxlib.h"
#include "${outputFileBasename}.h"
EOT;
foreach ($this->modules as $module)
{
$contents[] = sprintf('/* %s, %s.lua */', $module['moduleName'], $module['basename']);
$contents[] = sprintf('static const unsigned char %s[] = {', $module['bytesName']);
// $contents[] = $this->encodeBytes($module['bytes']);
$contents[] = $this->encodeBytesFast($module['bytes']);
$contents[] = '};';
$contents[] = '';
}
$contents[] = '';
foreach ($this->modules as $module)
{
$functionName = $module['functionName'];
$bytesName = $module['bytesName'];
$basename = $module['basename'];
$contents[] = <<<EOT
int ${functionName}(lua_State *L) {
int arg = lua_gettop(L);
luaL_loadbuffer(L,
(const char*)${bytesName},
sizeof(${bytesName}),
"${basename}.lua");
lua_insert(L,1);
lua_call(L,arg,1);
return 1;
}
EOT;
}
$contents[] = '';
$contents[] = "static luaL_Reg ${outputFileBasename}_modules[] = {";
foreach ($this->modules as $module)
{
$contents[] = sprintf(' {"%s", %s},',
$module["moduleName"],
$module["functionName"]);
}
$contents[] = <<<EOT
{NULL, NULL}
};
void luaopen_${outputFileBasename}(lua_State* L)
{
luaL_Reg* lib = ${outputFileBasename}_modules;
for (; lib->func; lib++)
{
lua_getglobal(L, "package");
lua_getfield(L, -1, "preload");
lua_pushcfunction(L, lib->func);
lua_setfield(L, -2, lib->name);
lua_pop(L, 2);
}
}
EOT;
return implode("
", $contents);
}
private function encodeBytes($bytes)
{
$len = strlen($bytes);
$contents = array();
$offset = 0;
$buffer = array();
while ($offset < $len)
{
$buffer[] = ord(substr($bytes, $offset, 1));
if (count($buffer) == 16)
{
$contents[] = $this->encodeBytesBlock($buffer);
$buffer = array();
}
$offset++;
}
if (!empty($buffer))
{
$contents[] = $this->encodeBytesBlock($buffer);
}
return implode("
", $contents);
}
private function encodeBytesFast($bytes)
{
$len = strlen($bytes);
$output = array();
for ($i = 0; $i < $len; $i++)
{
$output[] = sprintf('%d,', ord($bytes{$i}));
}
return implode('', $output);
}
private function encodeBytesBlock($buffer)
{
$output = array();
$len = count($buffer);
for ($i = 0; $i < $len; $i++)
{
$output[] = sprintf('%d,', $buffer[$i]);
}
return implode('', $output);
}
}
function help()
{
echo <<<EOT
usage: php compile_scripts.php [options] dirname output_filename
options:
-zip package to zip
-suffix package file extension name
-p prefix package name
-x exclude packages, eg: -x framework.server, framework.tests
-q quiet
EOT;
}
if ($argc < 3)
{
help();
exit(1);
}
array_shift($argv);
$config = array(
'packageName' => '',
'excludes' => array(),
'srcdir' => '',
'outputFileBasename' => '',
'zip' => false,
'suffixName' => 'zip',
'quiet' => false,
);
do
{
if ($argv[0] == '-p')
{
$config['packageName'] = $argv[1];
array_shift($argv);
}
else if ($argv[0] == '-x')
{
$excludes = explode(',', $argv[1]);
foreach ($excludes as $k => $v)
{
$v = trim($v);
if (empty($v))
{
unset($excludes[$k]);
}
else
{
$excludes[$k] = $v;
}
}
$config['excludes'] = $excludes;
array_shift($argv);
}
else if ($argv[0] == '-q')
{
$config['quiet'] = true;
}
else if ($argv[0] == '-zip')
{
$config['zip'] = true;
}
else if ($argv[0] == '-suffix')
{
$config['suffixName'] = $argv[1];
array_shift($argv);
}
else if ($config['srcdir'] == '')
{
$config['srcdir'] = $argv[0];
}
else
{
$config['outputFileBasename'] = $argv[0];
}
array_shift($argv);
} while (count($argv) > 0);
$packager = new LuaPackager($config);
if ($config['zip'])
{
$packager->dumpZip($config['outputFileBasename']);
}
else
{
$packager->dump($config['outputFileBasename']);
}
3.加密脚本
@echo on set _P_=bbframework set _T_=script_bak cd .. mkdir %_T_% mkdir %_T_%scripts mkdir %_P_%updatescripts echo "Copy Scripts to bak floder" xcopy /E %_P_%scripts %_T_%scripts cd %_P_% echo "UTF-8 transition" python ..inutf8main.py scripts echo "Handle <<updatescripts>> Begin.." move /Y scripts/app updatescripts/app php ..in\__lib__compile_scripts.php -zip -suffix "bin" updatescripts resupdate pause
以上就是windows上对lua代码进行加密的步骤
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转载自【宝宝巴士SuperDo团队】 原文链接: http://www.cnblogs.com/superdo/p/4988378.html