前段時間在flashseer看到有人提到:可以通過socket方式傳送swf文件,讓用戶無法獲取到swf文件… 當時還沒有出as3的反編譯,所以對程序的保護沒有在意.隨著反編譯程序的平民化,不希望別人看到源代碼的朋友就比較著急…

通過socket方式傳送swf文件來避免泄漏源代碼的思路(只適用as3): 讓主程序的loader(前臺swf)通過socket連接到后臺程序,然后請求需要的主程序文件.后臺讀取主程序數據通過socket發送給主程序的 loader.前臺swf適用Loader.loadBytes方法顯示主程序文件.

下面是測試的源程序:

package {import flash.display.Sprite;import flash.NET.Socket;import flash.events.*;import flash.errors.IOError;import flash.display.Loader;public class SocketTest extends Sprite {  public function SocketTest() {  var socket = new Socket();  socket.connect("localhost", 5277);  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 {   //接受數據   var str:String=socket.readUTFBytes(socket.bytesAvailable);   response+=str;   //當數據以end結束的時候,數據傳輸結束   if (StringUtil.endsWith(str,'end')) {   response=response.substr(0,response.length-3);   //把字符串轉換為ByteArray   var ba=Base64.decodeToByteArray(response);   //trace('bytearray=====',ba);   var l:Loader = new Loader();   //從 ByteArray 對象中所存儲的二進制數據中加載。   l.loadBytes(ba);   //trace(l.content);   addChild(l);   }  }  function closeHandler(e:Event):void {   trace("Socket closed! ");  }  function connectHandler(e:Event):void {   trace("Socket connected!");   sendRequest();  }  function ioErrorHandler(e:IOErrorEvent):void {   trace("IOError!");  }  function securityErrorHandler(e:SecurityErrorEvent):void {   trace("SecurityError!");  }  function socketDataHandler(e:ProgressEvent):void {   trace("Socket have data!");   readResponse();  }  }}}

php:

//后臺scoket程序,由于適用php寫比較簡單,就用php寫了.//error_reporting(E_ALL);error_reporting(0);set_time_limit(0);ob_implicit_flush();$address = 'localhost';$port = 5277;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") {  //讀取主程序數據  $f = fopen('main.swf','r');  $data = fread($f,filesize('main.swf'));  fclose($f);  //轉換為字符串  //echo base64_encode($data);  $talkback = base64_encode($data).'end';  }  //發送  socket_send($msgsock, $talkback, strlen($talkback),0);} while (true);socket_close($msgsock);} while (true);socket_close($sock);

php技術：php與flash as3 socket通信傳送文件實現代碼，轉載需保留來源！

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