source: trunk/src/network/ssl/qsslcipher.cpp@ 183

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/


/*!
    \class QSslCipher
    \brief The QSslCipher class represents an SSL cryptographic cipher.
    \since 4.3

    \reentrant
    \ingroup io
    \ingroup ssl
    \inmodule QtNetwork

    QSslCipher stores information about one cryptographic cipher. It
    is most commonly used with QSslSocket, either for configuring
    which ciphers the socket can use, or for displaying the socket's
    ciphers to the user.

    \sa QSslSocket, QSslKey
*/

#include "qsslcipher.h"
#include "qsslcipher_p.h"
#include "qsslsocket.h"

#ifndef QT_NO_DEBUG_STREAM
#include <QtCore/qdebug.h>

QT_BEGIN_NAMESPACE
#endif

/*!
    Constructs an empty QSslCipher object.
*/
QSslCipher::QSslCipher()
    : d(new QSslCipherPrivate)
{
}

/*!
    Constructs a QSslCipher object for the cipher determined by \a
    name and \a protocol. The constructor accepts only supported
    ciphers (i.e., the \a name and \a protocol must identify a cipher
    in the list of ciphers returned by
    QSslSocket::supportedCiphers()).

    You can call isNull() after construction to check if \a name and
    \a protocol correctly identified a supported cipher.
*/
QSslCipher::QSslCipher(const QString &name, QSsl::SslProtocol protocol)
    : d(new QSslCipherPrivate)
{
    foreach (const QSslCipher &cipher, QSslSocket::supportedCiphers()) {
        if (cipher.name() == name && cipher.protocol() == protocol) {
            *this = cipher;
            return;
        }
    }
}

/*!
    Constructs an identical copy of the \a other cipher.
*/
QSslCipher::QSslCipher(const QSslCipher &other)
    : d(new QSslCipherPrivate)
{
    *d = *other.d;
}

/*!
    Destroys the QSslCipher object.
*/
QSslCipher::~QSslCipher()
{
    delete d;
}

/*!
    Copies the contents of \a other into this cipher, making the two
    ciphers identical.
*/
QSslCipher &QSslCipher::operator=(const QSslCipher &other)
{
    *d = *other.d;
    return *this;
}

/*!
    Returns true if this cipher is the same as \a other; otherwise,
    false is returned.
*/
bool QSslCipher::operator==(const QSslCipher &other) const
{
    return d->name == other.d->name && d->protocol == other.d->protocol;
}

/*!
    \fn bool QSslCipher::operator!=(const QSslCipher &other) const

    Returns true if this cipher is not the same as \a other;
    otherwise, false is returned.
*/

/*!
    Returns true if this is a null cipher; otherwise returns false.
*/
bool QSslCipher::isNull() const
{
    return d->isNull;
}

/*!
    Returns the name of the cipher, or an empty QString if this is a null
    cipher.

    \sa isNull()
*/
QString QSslCipher::name() const
{
    return d->name;
}

/*!
    Returns the number of bits supported by the cipher.

    \sa usedBits()
*/
int QSslCipher::supportedBits()const
{
    return d->supportedBits;
}

/*!
    Returns the number of bits used by the cipher.

    \sa supportedBits()
*/
int QSslCipher::usedBits() const
{
    return d->bits;
}

/*!
    Returns the cipher's key exchange method as a QString.
*/
QString QSslCipher::keyExchangeMethod() const
{
    return d->keyExchangeMethod;
}
 
/*!
    Returns the cipher's authentication method as a QString.
*/
QString QSslCipher::authenticationMethod() const
{
    return d->authenticationMethod;
}

/*!
    Returns the cipher's encryption method as a QString.
*/
QString QSslCipher::encryptionMethod() const
{
    return d->encryptionMethod;
}

/*!
    Returns the cipher's protocol as a QString.

    \sa protocol()
*/
QString QSslCipher::protocolString() const
{
    return d->protocolString;
}

/*!
    Returns the cipher's protocol type, or \l QSsl::UnknownProtocol if
    QSslCipher is unable to determine the protocol (protocolString() may
    contain more information).

    \sa protocolString()
*/
QSsl::SslProtocol QSslCipher::protocol() const
{
    return d->protocol;
}

#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug debug, const QSslCipher &cipher)
{
    debug << "QSslCipher(name=" << qPrintable(cipher.name())
          << ", bits=" << cipher.usedBits()
          << ", proto=" << qPrintable(cipher.protocolString())
          << ")";
    return debug;
}
#endif

QT_END_NAMESPACE