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  1. void MainWindow::performRead()
  2. {
  3.  
  4.  
  5.     QTcpSocket * sock = static_cast<QTcpSocket*>(this->sender());
  6.     if (key == 0)
  7.     {
  8.     busy = true;
  9.     QString recv(sock->readLine());
  10.     key = recv.toInt();
  11.     qDebug() << "Cheia este " << key;
  12.  
  13.     char * response = enc_dec("#AUTH|admin|admin",strlen("#AUTH|admin|admin"),key);
  14.     sock->write(response);
  15.     }
  16.     else
  17.     {
  18.         busy = true;
  19.         while (sock->bytesAvailable() > 0)
  20.         {  
  21.         unsigned short word;
  22.         sock->read((char*)(&word),2);
  23.         qDebug()<<word;
  24.         QByteArray bts = sock->read(word);
  25.         char * decodat = enc_dec((char*)bts.data(),bts.length() - 2,key);
  26.         char testx[2];
  27.         sock->peek(&testx[0],2);
  28.         qDebug() << decodat;
  29.         }
  30.  
  31.     }
  32.  
  33.     busy = false;
  34. }
  35.  
  36. void MainWindow::on_pushButton_clicked()
  37. {
  38.     if (!busy)
  39.     {
  40.     key = 0;
  41.     QTcpSocket * sock = new QTcpSocket();
  42.     connect(sock,SIGNAL(readyRead()),this,SLOT(performRead()));
  43.     sock->connectToHost("194.110.212.46",6550);
  44.     }
  45.     else qDebug()<<"Can't you see I am busy??" << endl;
  46. }
  47.  
  48. char * enc_dec(char * str,int len, int key)
  49. {
  50.     unsigned char keys[2];
  51.     keys[0] = (unsigned char)key;
  52.     keys[1] = keys[0] ^ 255;
  53.     char * nou = new char[len + 1];
  54.     nou[len] = '';
  55.     for (int i = 0; i < len; i++)
  56.     {
  57.         char tmpy = str[i] ^ keys[i % 2];
  58.         nou[i] = tmpy;
  59.     }
  60.     return nou;
  61. }
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