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| ** Copyright (C) 2016 Kurt Pattyn <pattyn.kurt@gmail.com>. |
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| |
| /*! |
| \class QMaskGenerator |
| |
| \inmodule QtWebSockets |
| \since 5.3 |
| |
| \brief The QMaskGenerator class provides an abstract base for custom 32-bit mask generators. |
| |
| The WebSockets specification as outlined in \l {RFC 6455} |
| requires that all communication from client to server be masked. This is to prevent |
| malicious scripts from attacking badly behaving proxies. |
| For more information about the importance of good masking, |
| see \l {"Talking to Yourself for Fun and Profit" by Lin-Shung Huang et al}. |
| By default QWebSocket uses the reasonably secure QRandomGenerator::global()->generate() function. |
| The best measure against attacks mentioned in the document above, |
| is to use QWebSocket over a secure connection (\e wss://). |
| In general, always be careful to not have 3rd party script access to |
| a QWebSocket in your application. |
| */ |
| |
| /*! |
| \fn bool QMaskGenerator::seed() |
| |
| Initializes the QMaskGenerator by seeding the randomizer. |
| When seed() is not called, it depends on the specific implementation of a subclass if |
| a default seed is used or no seed is used at all. |
| Returns \e true if seeding succeeds, otherwise false. |
| */ |
| |
| /*! |
| \fn quint32 QMaskGenerator::nextMask() |
| |
| Returns a new random 32-bit mask. The randomness depends on the RNG used to created the |
| mask. |
| */ |
| |
| #include "qmaskgenerator.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| Creates a new QMaskGenerator object with the given optional QObject \a parent. |
| */ |
| QMaskGenerator::QMaskGenerator(QObject *parent) : |
| QObject(parent) |
| { |
| } |
| |
| /*! |
| Destroys the QMaskGenerator object. |
| */ |
| QMaskGenerator::~QMaskGenerator() |
| {} |
| |
| QT_END_NAMESPACE |