php与flash as3 socket通信传送文件实现代码

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:

    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(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:

    //后台scoket程序,由于适用php写比较简单,就用php写了.
    //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") {
      //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);