qffmpegcertificateutils.cpp

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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qffmpegcertificateutils_p.h"
 
#include <algorithm>
 
QT_BEGIN_NAMESPACE
 
namespace QFFmpeg {
 
QByteArray derToPem(QByteArrayView der)
{
    const QByteArray base64 = QByteArray(der.data(), der.size()).toBase64();
 
    constexpr qsizetype lineLength = 64;
 
    QByteArray pem = "-----BEGIN CERTIFICATE-----\n";
    for (qsizetype pos = 0; pos < base64.size(); pos += lineLength) {
        pem += base64.sliced(pos, std::min(lineLength, base64.size() - pos));
        pem += '\n';
    }
    pem += "-----END CERTIFICATE-----\n";
 
    return pem;
}
 
QByteArray certificatesToPemBundle(const QList<QByteArray> &derCertificates)
{
    QByteArray bundle;
    for (const QByteArray &der : derCertificates)
        bundle += derToPem(der);
 
    return bundle;
}
 
} // namespace QFFmpeg
 
QT_END_NAMESPACE