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);