MAVLinkSigningKeys.h

Go to the documentation of this file.

#pragma once
 
#include <QtCore/QByteArray>
#include <QtCore/QObject>
#include <QtQmlIntegration/QtQmlIntegration>
 
class QmlObjectListModel;
class Vehicle;
 
class MAVLinkSigningKey : public QObject
{
    Q_OBJECT
    QML_ELEMENT
    QML_UNCREATABLE("")
 
    Q_PROPERTY(QString name     READ name     CONSTANT)
 
public:
    explicit MAVLinkSigningKey(const QString& name, const QByteArray& keyBytes, QObject* parent = nullptr);
 
    QString    name()     const { return _name; }
    QByteArray keyBytes() const { return _keyBytes; }
 
private:
    QString    _name;
    QByteArray _keyBytes; // 32-byte SHA-256 hash
};
 
class MAVLinkSigningKeys : public QObject
{
    Q_OBJECT
    QML_ANONYMOUS
 
    Q_PROPERTY(QmlObjectListModel* keys READ keys CONSTANT)
 
public:
    static MAVLinkSigningKeys* instance();
 
    explicit MAVLinkSigningKeys(QObject* parent = nullptr);
    ~MAVLinkSigningKeys() override;
 
    QmlObjectListModel* keys() const { return _keys; }
 
    Q_INVOKABLE void addKey(const QString& name, const QString& passphrase);
 
    Q_INVOKABLE void removeKey(int index);
 
    Q_INVOKABLE bool isKeyInUse(const QString& name) const;
 
    QByteArray keyBytesAt(int index) const;
 
    QByteArray keyBytesByName(const QString& name) const;
 
    QString keyNameAt(int index) const;
 
signals:
    void keysChanged();
    void keyUsageChanged();
 
private:
    friend class SigningTest;
 
    void _save();
    void _load();
    bool _keyExists(const QString& name) const;
    void _connectVehicle(Vehicle* vehicle);
    void _disconnectVehicle(Vehicle* vehicle);
 
    QmlObjectListModel* _keys = nullptr;
 
    static constexpr const char* kSettingsGroup = "MAVLinkSigningKeys";
    static constexpr const char* kKeysArrayKey  = "keys";
    static constexpr const char* kNameKey       = "name";
    static constexpr const char* kKeyBytesKey   = "keyBytes";
 
    // Old Fact-based signing key (pre-named-keys system)
    static constexpr const char* kOldSigningKeySettingsKey = "mavlink2SigningKey";
};