前段时间在
flashseer看到有人提到:可以通过socket方式传送swf文件,让用户无法获取到swf文件... 当时还没有出as3的反编译,所以对程序的保护没有在意.
随着反编译程序的平民化,不希望别人看到源代码的朋友就比较着急...
通过socket方式传送swf文件来避免泄漏源代码的思路(只适用as3): 让主程序的loader(前台swf)通过socket连接到后台程序,然后请求需要的主程序文件.后台读取主程序数据通过socket发送给主程序的loader.前台swf适用Loader.loadBytes方法显示主程序文件.
下面是测试的源程序:
前台loader:
//后台scoket程序,由于适用php写比较简单,就用php写了.
通过socket方式传送swf文件来避免泄漏源代码的思路(只适用as3): 让主程序的loader(前台swf)通过socket连接到后台程序,然后请求需要的主程序文件.后台读取主程序数据通过socket发送给主程序的loader.前台swf适用Loader.loadBytes方法显示主程序文件.
下面是测试的源程序:
前台loader:
//
-------------
// Base64和StringUtil在网上自己找吧
import Base64;
import StringUtil;
var socket = new Socket();
socket.connect( " localhost " , 11915 );
socket.addEventListener(Event.CLOSE, closeHandler);
socket.addEventListener(Event.CONNECT, connectHandler);
socket.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler);
var response:String;
function writeln(str:String): void {
str += "" ;
try {
socket.writeUTFBytes(str);
} catch (e:IOError) {
trace(e);
}
}
function sendRequest(): void {
trace( " sendRequest " );
response = "" ;
writeln( ' bin ' );
socket.flush();
}
function readResponse(): void {
// 接受数据
var str:String = socket.readUTFBytes(socket.bytesAvailable);
response += str;
// 当数据以end结束的时候,数据传输结束
if (StringUtil.endsWith(str, ' end ' ))
{
response = response.substr( 0 ,response.length - 3 );
// 把字符串转换为ByteArray
var ba = Base64.decodeToByteArray(response);
// trace('bytearray=====',ba);
var l:Loader = new Loader();
// 从 ByteArray 对象中所存储的二进制数据中加载。
l.loadBytes(ba);
// trace(l.content);
addChild(l);
}
}
function closeHandler(event:Event): void {
trace( " closeHandler: " + event);
}
function connectHandler(event:Event): void {
trace( " connectHandler: " + event);
sendRequest();
}
function ioErrorHandler(event:IOErrorEvent): void {
trace( " ioErrorHandler: " + event);
}
function securityErrorHandler(event:SecurityErrorEvent): void {
trace( " securityErrorHandler: " + event);
}
function socketDataHandler(event:ProgressEvent): void {
trace( " socketDataHandler: " + event);
readResponse();
}
// Base64和StringUtil在网上自己找吧
import Base64;
import StringUtil;
var socket = new Socket();
socket.connect( " localhost " , 11915 );
socket.addEventListener(Event.CLOSE, closeHandler);
socket.addEventListener(Event.CONNECT, connectHandler);
socket.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler);
var response:String;
function writeln(str:String): void {
str += "" ;
try {
socket.writeUTFBytes(str);
} catch (e:IOError) {
trace(e);
}
}
function sendRequest(): void {
trace( " sendRequest " );
response = "" ;
writeln( ' bin ' );
socket.flush();
}
function readResponse(): void {
// 接受数据
var str:String = socket.readUTFBytes(socket.bytesAvailable);
response += str;
// 当数据以end结束的时候,数据传输结束
if (StringUtil.endsWith(str, ' end ' ))
{
response = response.substr( 0 ,response.length - 3 );
// 把字符串转换为ByteArray
var ba = Base64.decodeToByteArray(response);
// trace('bytearray=====',ba);
var l:Loader = new Loader();
// 从 ByteArray 对象中所存储的二进制数据中加载。
l.loadBytes(ba);
// trace(l.content);
addChild(l);
}
}
function closeHandler(event:Event): void {
trace( " closeHandler: " + event);
}
function connectHandler(event:Event): void {
trace( " connectHandler: " + event);
sendRequest();
}
function ioErrorHandler(event:IOErrorEvent): void {
trace( " ioErrorHandler: " + event);
}
function securityErrorHandler(event:SecurityErrorEvent): void {
trace( " securityErrorHandler: " + event);
}
function socketDataHandler(event:ProgressEvent): void {
trace( " socketDataHandler: " + event);
readResponse();
}
//后台scoket程序,由于适用php写比较简单,就用php写了.
<?
php
// error_reporting(E_ALL);
error_reporting ( 0 );
set_time_limit ( 0 );
ob_implicit_flush ();
$address = ' localhost ' ;
$port = 11915 ;
if (( $sock = socket_create(AF_INET , SOCK_STREAM , SOL_TCP)) < 0 ) {
echo " socket_create() failed: reason: " . socket_strerror( $sock ) . "" n " ;
}
if (( $ret = socket_bind( $sock , $address , $port )) < 0) {
echo " socket_bind() failed : reason : " . socket_strerror( $ret ) . "" n " ;
}
if (( $ret = socket_listen( $sock , 5 )) < 0 ) {
echo " socket_listen() failed: reason: " . socket_strerror( $ret ) . "" n " ;
}
echo " connect . " ;
do {
if (( $msgsock = socket_accept( $sock )) < 0) {
echo " socket_accept() failed : reason : " . socket_strerror( $msgsock ) . "" n " ;
break ;
}
do {
socket_recv( $msgsock , $buf , 2048 , 0 );
if ( $buf == '' ) {
socket_close( $msgsock );
echo " some one quit " ;
break ;
}
else if ( $buf == ' bin ' )
{
// 读取主程序数据
$f = fopen ( ' main.swf ' , ' r ' );
$data = fread ( $f , filesize ( ' main.swf ' ));
fclose ( $f );
// 转换为字符串
//echo base64_encode($data);
$talkback = base64_encode ( $data ) . ' end ' ;
}
// 发送
socket_send( $msgsock , $talkback , strlen ( $talkback ) , 0 );
} while ( true );
socket_close( $msgsock );
} while ( true );
socket_close( $sock );
?>
// error_reporting(E_ALL);
error_reporting ( 0 );
set_time_limit ( 0 );
ob_implicit_flush ();
$address = ' localhost ' ;
$port = 11915 ;
if (( $sock = socket_create(AF_INET , SOCK_STREAM , SOL_TCP)) < 0 ) {
echo " socket_create() failed: reason: " . socket_strerror( $sock ) . "" n " ;
}
if (( $ret = socket_bind( $sock , $address , $port )) < 0) {
echo " socket_bind() failed : reason : " . socket_strerror( $ret ) . "" n " ;
}
if (( $ret = socket_listen( $sock , 5 )) < 0 ) {
echo " socket_listen() failed: reason: " . socket_strerror( $ret ) . "" n " ;
}
echo " connect . " ;
do {
if (( $msgsock = socket_accept( $sock )) < 0) {
echo " socket_accept() failed : reason : " . socket_strerror( $msgsock ) . "" n " ;
break ;
}
do {
socket_recv( $msgsock , $buf , 2048 , 0 );
if ( $buf == '' ) {
socket_close( $msgsock );
echo " some one quit " ;
break ;
}
else if ( $buf == ' bin ' )
{
// 读取主程序数据
$f = fopen ( ' main.swf ' , ' r ' );
$data = fread ( $f , filesize ( ' main.swf ' ));
fclose ( $f );
// 转换为字符串
//echo base64_encode($data);
$talkback = base64_encode ( $data ) . ' end ' ;
}
// 发送
socket_send( $msgsock , $talkback , strlen ( $talkback ) , 0 );
} while ( true );
socket_close( $msgsock );
} while ( true );
socket_close( $sock );
?>