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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Messaging Framework.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "smtpauthenticator.h"

#include "smtpconfiguration.h"

#include <qmailauthenticator.h>

QList<QByteArray> SmtpAuthenticator::getAuthentication(const SmtpConfiguration &svcCfg,
                                                       const QMailCredentialsInterface &credentials)
{
    QByteArray generic(QMailAuthenticator::getAuthentication(svcCfg, credentials));
    if (!generic.isEmpty())
        return QList<QByteArray>() << generic.prepend("AUTH ");

    QList<QByteArray> result;
    if (svcCfg.smtpAuthentication() == SmtpConfiguration::Auth_XOAUTH2) {
        result << QByteArray("AUTH XOAUTH2");
        result << QString::fromLatin1("user=%1\001auth=Bearer %2\001\001").arg(svcCfg.smtpUsername()).arg(credentials.accessToken()).toUtf8().toBase64();
    }
#ifndef QT_NO_SSL
    else if (svcCfg.smtpAuthentication() == SmtpConfiguration::Auth_LOGIN) {
        result << QByteArray("AUTH LOGIN");
        result << credentials.username().toUtf8().toBase64();
        result << credentials.password().toUtf8().toBase64();
    } else if (svcCfg.smtpAuthentication() == SmtpConfiguration::Auth_PLAIN) {
        QByteArray username(credentials.username().toUtf8());
        QByteArray password(credentials.password().toUtf8());
        result << QByteArray("AUTH PLAIN ") + QByteArray(username + '\0' + username + '\0' + password).toBase64();
        result << QByteArray(username + '\0' + username + '\0' + password).toBase64();
    }
#endif

    return result;
}

QByteArray SmtpAuthenticator::getResponse(const SmtpConfiguration &svcCfg,
                                          const QByteArray &challenge,
                                          const QMailCredentialsInterface &credentials)
{
    return QMailAuthenticator::getResponse(svcCfg, challenge, credentials);
}