Add support for rpm-ostree

This allows to upgrade systems based on rpm-ostree like Fedora Kinoite
or Fedora Silverblue.

libdiscover/backends/CMakeLists.txt

@@ -45,4 +45,9 @@ if(BUILD_FwupdBackend AND TARGET PkgConfig::Fwupd)
     add_subdirectory(FwupdBackend)
 endif()
 
+option(BUILD_RpmOstreeBackend "Build RpmOstree support." "ON")
+if(BUILD_RpmOstreeBackend)
+    add_subdirectory(RpmOstreeBackend)
+endif()
+
 

libdiscover/backends/RpmOstreeBackend/CMakeLists.txt

+set(CMAKE_MODULE_PATH ${ECM_MODULE_DIR})
+
+set_source_files_properties(org.projectatomic.rpmostree1.xml PROPERTIES
+   INCLUDE dbustypes.h
+)
+set(rpmostree1_xml ${CMAKE_INSTALL_PREFIX}/${DBUS_INTERFACES_INSTALL_DIR}/org.projectatomic.rpmostree1.xml)
+qt5_add_dbus_interface(ostree1_SRCS org.projectatomic.rpmostree1.xml rpmostree1)
+
+add_library(rpmostree-backend MODULE RpmOstreeResource.cpp RpmOstreeBackend.cpp RpmOstreeTransaction.cpp RpmOstree.qrc ${ostree1_SRCS})
+target_link_libraries(rpmostree-backend PRIVATE Discover::Common Qt5::DBus KF5::CoreAddons KF5::I18n)
+
+install(TARGETS rpmostree-backend DESTINATION ${PLUGIN_INSTALL_DIR}/discover)
+
+add_library(RpmOstreeNotifier MODULE RpmOstreeNotifier.cpp)
+target_link_libraries(RpmOstreeNotifier Discover::Notifiers Qt5::Concurrent PkgConfig::Flatpak)
+set_target_properties(RpmOstreeNotifier PROPERTIES INSTALL_RPATH ${CMAKE_INSTALL_FULL_LIBDIR}/plasma-discover)
+
+install(TARGETS RpmOstreeNotifier DESTINATION ${PLUGIN_INSTALL_DIR}/discover-notifier)
+
+
+
+

libdiscover/backends/RpmOstreeBackend/RpmOstree.qrc

+<!DOCTYPE RCC>
+<RCC version="1.0">
+ <qresource>
+    <file>qml/RemoteRefsButton.qml</file>
+ </qresource>
+</RCC>

libdiscover/backends/RpmOstreeBackend/RpmOstreeBackend.cpp

+/*
+ *   SPDX-FileCopyrightText: 2020 Aleix Pol Gonzalez <aleixpol@kde.org>
+ *   SPDX-FileCopyrightText: 2021 Mariam Fahmy Sobhy <mariamfahmy66@gmail.com>
+ *
+ *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+ */
+
+#include "RpmOstreeBackend.h"
+#include "RpmOstreeResource.h"
+#include "RpmOstreeTransaction.h"
+
+#include <QDBusInterface>
+#include <QDBusMessage>
+#include <QDBusObjectPath>
+#include <QDBusPendingReply>
+#include <QDebug>
+#include <QList>
+#include <QMap>
+#include <QStringList>
+#include <QVariant>
+#include <QVariantList>
+#include <QFile>
+#include <Transaction/Transaction.h>
+#include <resources/SourcesModel.h>
+#include <resources/StandardBackendUpdater.h>
+
+#include <QStandardItemModel>
+
+DISCOVER_BACKEND_PLUGIN(RpmOstreeBackend)
+
+class RpmOstreeSourcesBackend : public AbstractSourcesBackend
+{
+public:
+    explicit RpmOstreeSourcesBackend(AbstractResourcesBackend *parent)
+        : AbstractSourcesBackend(parent)
+        , m_model(new QStandardItemModel(this))
+    {
+        auto it = new QStandardItem(QStringLiteral("rpm-ostree"));
+        it->setData(QStringLiteral("rpm-ostree"), IdRole);
+        m_model->appendRow(it);
+    }
+
+    QAbstractItemModel *sources() override
+    {
+        return m_model;
+    }
+    bool addSource(const QString &) override
+    {
+        return false;
+    }
+    bool removeSource(const QString &) override
+    {
+        return false;
+    }
+    QString idDescription() override
+    {
+        return QStringLiteral("rpm-ostree");
+    }
+    QVariantList actions() const override
+    {
+        return {};
+    }
+
+    bool supportsAdding() const override
+    {
+        return false;
+    }
+    bool canMoveSources() const override
+    {
+        return false;
+    }
+
+private:
+    QStandardItemModel *const m_model;
+};
+
+RpmOstreeBackend::RpmOstreeBackend(QObject *parent)
+    : AbstractResourcesBackend(parent)
+    , isDeploymentUpdate(true)
+    , m_fetching(true)
+    , m_reviews(AppStreamIntegration::global()->reviews())
+    , m_updater(new StandardBackendUpdater(this))
+{
+    connect(m_updater, &StandardBackendUpdater::updatesCountChanged, this, &RpmOstreeBackend::updatesCountChanged);
+    getDeployments();
+    SourcesModel::global()->addSourcesBackend(new RpmOstreeSourcesBackend(this));
+    executeCheckUpdateProcess();
+    executeRemoteRefsProcess();
+}
+
+void RpmOstreeBackend::getDeployments()
+{
+    // reading Deployments property from "org.projectatomic.rpmostree1.Sysroot" interface
+    QDBusInterface interface(QStringLiteral("org.projectatomic.rpmostree1"),
+                             QStringLiteral("/org/projectatomic/rpmostree1/Sysroot"),
+                             QStringLiteral("org.freedesktop.DBus.Properties"),
+                             QDBusConnection::systemBus());
+    QDBusMessage result = interface.call(QStringLiteral("Get"), QStringLiteral("org.projectatomic.rpmostree1.Sysroot"), QStringLiteral("Deployments"));
+    QList<QVariant> outArgs = result.arguments();
+    QVariant first = outArgs.at(0);
+    QDBusVariant dbvFirst = first.value<QDBusVariant>();
+    QVariant vFirst = dbvFirst.variant();
+    QDBusArgument dbusArgs = vFirst.value<QDBusArgument>();
+
+    // storing the extracted deployments from DBus
+    dbusArgs.beginArray();
+    while (!dbusArgs.atEnd()) {
+        QMap<QString, QVariant> map;
+        dbusArgs >> map;
+        QDBusArgument dbusArgsSignature = map[QStringLiteral("signatures")].value<QDBusArgument>();
+        dbusArgsSignature >> map[QStringLiteral("signatures")];
+        QDBusVariant dbvFirst1 = map[QStringLiteral("signatures")].value<QDBusVariant>();
+        QVariant vFirst1 = dbvFirst1.variant();
+        QDBusArgument dbusArgsSign = vFirst1.value<QDBusArgument>();
+        dbusArgsSign >> map[QStringLiteral("signatures")];
+
+        QString baseVersion = map[QStringLiteral("version")].toString();
+        QString deploymentName = baseVersion;
+        deploymentName.remove(8, deploymentName.size() - 1);
+        baseVersion.remove(0, 7);
+
+        // creating a deployment struct
+        DeploymentInformation extractDeployment;
+        extractDeployment.name = deploymentName;
+        extractDeployment.baseVersion = baseVersion;
+        extractDeployment.booted = map[QStringLiteral("booted")].toBool();
+        extractDeployment.baseChecksum = map[QStringLiteral("checksum")].toString();
+        extractDeployment.layeredPackages = map[QStringLiteral("packages")].toString();
+        extractDeployment.localPackages = map[QStringLiteral("requested-local-packages")].toString();
+        extractDeployment.signature = map[QStringLiteral("signatures")].toString();
+        extractDeployment.origin = map[QStringLiteral("origin")].toString();
+        extractDeployment.timestamp = map[QStringLiteral("timestamp")].toULongLong();
+
+        deploymentsList.push_back(extractDeployment);
+    }
+    dbusArgs.endArray();
+
+    // create a resource for each deployment
+    for (const DeploymentInformation &deployment : deploymentsList) {
+        QString name = deployment.name;
+        QString baseVersion = deployment.baseVersion;
+        QString baseChecksum = deployment.baseChecksum;
+        QString signature = deployment.signature;
+        QString layeredPackages = deployment.layeredPackages;
+        QString localPackages = deployment.localPackages;
+        QString origin = deployment.origin;
+        qulonglong timestamp = deployment.timestamp;
+        bool booted = deployment.booted;
+
+        RpmOstreeResource *deploymentResource = new RpmOstreeResource(name, baseVersion, baseChecksum, signature, layeredPackages, localPackages, origin, timestamp, this);
+
+        // changing the state of the booted deployment resource to Installed.
+        if (booted) {
+            deploymentResource->setState(AbstractResource::Installed);
+        }
+        m_resources.push_back(deploymentResource);
+    }
+}
+
+void RpmOstreeBackend::toggleFetching()
+{
+    m_fetching = !m_fetching;
+    checkForUpdatesNeeded();
+    emit fetchingChanged();
+}
+
+void RpmOstreeBackend::checkForUpdatesNeeded()
+{
+    if (!m_newVersion.isEmpty()) {
+        m_newVersion.remove(0, 25);
+        m_newVersion.remove(13, m_newVersion.size() - 13);
+        m_resources[0]->setNewVersion(m_newVersion);
+        m_resources[0]->setState(AbstractResource::Upgradeable);
+        connect(m_resources[0], &RpmOstreeResource::stateChanged, this, &RpmOstreeBackend::updatesCountChanged);
+    }
+}
+
+void RpmOstreeBackend::executeCheckUpdateProcess()
+{
+    QProcess *process = new QProcess();
+
+    connect(process, &QProcess::readyReadStandardError, [process]() {
+        QByteArray readError = process->readAllStandardError();
+    });
+
+    // catch data output
+    connect(process, &QProcess::readyReadStandardOutput, this, [process, this]() {
+        QByteArray readOutput = process->readAllStandardOutput();
+        this->getQProcessUpdateOutput(readOutput);
+    });
+
+    // delete process instance when done, and get the exit status to handle errors.
+    connect(process, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished), [=](int exitCode, QProcess::ExitStatus exitStatus) {
+        qWarning() << "process exited with code " << exitCode;
+        toggleFetching();
+        process->deleteLater();
+    });
+
+    process->setProcessChannelMode(QProcess::MergedChannels);
+    process->start(QStringLiteral("rpm-ostree update --check"));
+}
+
+void RpmOstreeBackend::getQProcessUpdateOutput(QByteArray readOutput)
+{
+    QList<QByteArray> checkUpdateOutput = readOutput.split('\n');
+
+    for (const QByteArray &output : checkUpdateOutput) {
+        if (output.contains(QByteArray("Version"))) {
+            m_newVersion = QString::fromLocal8Bit(output);
+        }
+    }
+}
+
+void RpmOstreeBackend::executeRemoteRefsProcess()
+{
+    if (!m_remoteRefsList.isEmpty())
+        m_remoteRefsList.clear();
+
+    QProcess *process = new QProcess(this);
+
+    connect(process, &QProcess::readyReadStandardError, [process]() {
+        QByteArray readError = process->readAllStandardError();
+    });
+
+    // catch data output
+    connect(process, &QProcess::readyReadStandardOutput, this, [process, this]() {
+        QByteArray readOutput = process->readAllStandardOutput();
+        this->getQProcessRefsOutput(readOutput);
+    });
+
+    // delete process instance when done, and get the exit status to handle errors.
+    QObject::connect(process, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished), [=](int exitCode, QProcess::ExitStatus exitStatus) {
+        qWarning() << "process exited with code " << exitCode;
+        settingRemoteRefsDeploymentResource();
+        process->deleteLater();
+    });
+
+    process->setProcessChannelMode(QProcess::MergedChannels);
+    process->start(QStringLiteral("ostree --repo=/ostree/repo remote refs kinoite"));
+}
+
+void RpmOstreeBackend::getQProcessRefsOutput(QByteArray readOutput)
+{
+    QList<QByteArray> remoteRefsList;
+    remoteRefsList = readOutput.split('\n');
+
+    QString kinoite = QStringLiteral("kinoite");
+
+    for (const QByteArray &refs : remoteRefsList) {
+        QString refsToString = QString::fromLocal8Bit(refs);
+        if (refsToString.count(kinoite) <= 1)
+            continue;
+        m_remoteRefsList.push_back(refsToString);
+    }
+}
+
+void RpmOstreeBackend::settingRemoteRefsDeploymentResource()
+{
+    m_resources[0]->setRemoteRefsList(m_remoteRefsList);
+}
+
+int RpmOstreeBackend::updatesCount() const
+{
+    return m_updater->updatesCount();
+}
+
+bool RpmOstreeBackend::isValid() const
+{
+    return QFile::exists(QStringLiteral("/run/ostree-booted"));
+}
+
+ResultsStream *RpmOstreeBackend::search(const AbstractResourcesBackend::Filters &filter)
+{
+    QVector<AbstractResource *> res;
+    for (AbstractResource *r : m_resources) {
+        if (r->state() >= filter.state)
+            res.push_back(r);
+    }
+    return new ResultsStream(QStringLiteral("rpm-ostree"), res);
+}
+
+Transaction *RpmOstreeBackend::installApplication(AbstractResource *app, const AddonList &addons)
+{
+    updateCurrentDeployment();
+    return new RpmOstreeTransaction(qobject_cast<RpmOstreeResource *>(app), addons, Transaction::InstallRole, transactionUpdatePath, true);
+}
+
+Transaction *RpmOstreeBackend::installApplication(AbstractResource *app)
+{
+    bool deploymentUpdate = isDeploymentUpdate;
+    if (isDeploymentUpdate) {
+        updateCurrentDeployment();
+    } else {
+        isDeploymentUpdate = true;
+    }
+    return new RpmOstreeTransaction(qobject_cast<RpmOstreeResource *>(app), Transaction::InstallRole, transactionUpdatePath, deploymentUpdate);
+}
+
+Transaction *RpmOstreeBackend::removeApplication(AbstractResource *)
+{
+    return nullptr;
+}
+
+void RpmOstreeBackend::updateCurrentDeployment()
+{ 
+    OrgProjectatomicRpmostree1OSInterface interface (QStringLiteral("org.projectatomic.rpmostree1"),
+                                                     QStringLiteral("/org/projectatomic/rpmostree1/fedora"),
+                                                     QDBusConnection::systemBus(),
+                                                     this);
+    QVariantMap options;
+    QVariantMap modifiers;
+    QString name;
+
+    QDBusPendingReply<QString> reply = interface.UpdateDeployment(modifiers, options);
+    reply.waitForFinished();
+    if (!reply.isError()) {
+        transactionUpdatePath = reply.argumentAt(0).value<QString>();
+    } else {
+        qDebug() << "Error occurs when performing the UpdateDeployment: " << reply.error();
+    }
+}
+
+void RpmOstreeBackend::checkForUpdates()
+{
+    if (m_fetching)
+        return;
+    executeCheckUpdateProcess();
+    executeRemoteRefsProcess();
+    QTimer::singleShot(500, this, &RpmOstreeBackend::toggleFetching);
+}
+
+void RpmOstreeBackend::perfromSystemUpgrade(QString selectedRefs)
+{
+    OrgProjectatomicRpmostree1OSInterface interface (QStringLiteral("org.projectatomic.rpmostree1"),
+                                                     QStringLiteral("/org/projectatomic/rpmostree1/fedora"),
+                                                     QDBusConnection::systemBus(),
+                                                     this);
+    isDeploymentUpdate = false;
+    QVariantMap options;
+    QStringList packages;
+
+    QDBusPendingReply<QString> reply = interface.Rebase(options, selectedRefs, packages);
+    reply.waitForFinished();
+    if (!reply.isError()) {
+        transactionUpdatePath = reply.argumentAt(0).value<QString>();
+        installApplication(m_resources[0]);
+    } else {
+        qDebug() << "Error occurs when performing the Rebase: " << reply.error();
+    }
+}
+
+AbstractBackendUpdater *RpmOstreeBackend::backendUpdater() const
+{
+    return m_updater;
+}
+
+AbstractReviewsBackend *RpmOstreeBackend::reviewsBackend() const
+{
+    return m_reviews.data();
+}
+
+QString RpmOstreeBackend::displayName() const
+{
+    return QStringLiteral("rpm-ostree");
+}
+
+bool RpmOstreeBackend::hasApplications() const
+{
+    return true;
+}
+
+#include "RpmOstreeBackend.moc"

libdiscover/backends/RpmOstreeBackend/RpmOstreeBackend.h

+/*
+ *   SPDX-FileCopyrightText: 2020 Aleix Pol Gonzalez <aleixpol@kde.org>
+ *   SPDX-FileCopyrightText: 2021 Mariam Fahmy Sobhy <mariamfahmy66@gmail.com>
+ *
+ *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+ */
+
+#ifndef RPMOSTREE1BACKEND_H
+#define RPMOSTREE1BACKEND_H
+
+#include <resources/AbstractResourcesBackend.h>
+
+#include "rpmostree1.h"
+#include <QMetaType>
+#include <QProcess>
+#include <QSharedPointer>
+#include <QThreadPool>
+#include <QtDBus/QDBusPendingReply>
+
+#include <AppStreamQt/component.h>
+#include <appstream/AppStreamIntegration.h>
+#include <appstream/OdrsReviewsBackend.h>
+
+class RpmOstreeReviewsBackend;
+class OdrsReviewsBackend;
+class RpmOstreeResource;
+class StandardBackendUpdater;
+class RpmOstreeBackend : public AbstractResourcesBackend
+{
+    Q_OBJECT
+public:
+    explicit RpmOstreeBackend(QObject *parent = nullptr);
+
+    /*
+     * Getting the list of deployments from the rpm-ostree DBus class and
+     * converting each deployment to resource and detecting the currently running deployment.
+     * It is corresponding to "rpm-ostree status".
+     */
+    void getDeployments();
+
+    /*
+     * Executing "rpm-ostree update --check" using QProcess to check if
+     * there is a new deployment version avaliable.
+     */
+    void executeCheckUpdateProcess();
+
+    /*
+     * Getting the output resulting from executing the QProcess update check.
+     */
+    void getQProcessUpdateOutput(QByteArray readOutput);
+
+    /*
+     * Calling UpdateDeployment method from the rpm-ostree DBus class when
+     * there is a new deployment version avaliable .
+     */
+    void updateCurrentDeployment();
+
+    /*
+     * Executing "ostree remote refs kinoite" using QProcess to get
+     * a list of the avaliable remote refs list.
+     */
+    void executeRemoteRefsProcess();
+
+    /*
+     * Getting the output resulting from executing the QProcess remote refs list.
+     */
+    void getQProcessRefsOutput(QByteArray readOutput);
+
+    /*
+     * Setting the current remote refs list to the current running deployment resource.
+     */
+    void settingRemoteRefsDeploymentResource();
+
+    /*
+     * Calling Rebase method from the rpm-ostree DBus class when
+     * there is a new kinoite refs.
+     */
+    void perfromSystemUpgrade(QString);
+
+    int updatesCount() const override;
+    AbstractBackendUpdater *backendUpdater() const override;
+    AbstractReviewsBackend *reviewsBackend() const override;
+    ResultsStream *search(const AbstractResourcesBackend::Filters &search) override;
+
+    // return true when OSTreeRPMBackend is ready to be loaded
+    bool isValid() const override;
+
+    Transaction *installApplication(AbstractResource *) override;
+    Transaction *installApplication(AbstractResource *, const AddonList &) override;
+    Transaction *removeApplication(AbstractResource *) override;
+    bool isFetching() const override
+    {
+        return m_fetching;
+    }
+    void checkForUpdates() override;
+    QString displayName() const override;
+    bool hasApplications() const override;
+
+public Q_SLOTS:
+    void toggleFetching();
+
+private:
+    struct DeploymentInformation {
+        QString name;
+        bool booted;
+        QString baseVersion;
+        QString baseChecksum;
+        QString layeredPackages;
+        QString localPackages;
+        QString signature;
+        QString origin;
+        qulonglong timestamp;
+    };
+
+    QSharedPointer<OdrsReviewsBackend> m_reviews;
+    StandardBackendUpdater *m_updater;
+    QVector<RpmOstreeResource *> m_resources;
+    QVector<DeploymentInformation> deploymentsList;
+
+    QString transactionUpdatePath;
+    QStringList m_remoteRefsList;
+    bool m_fetching;
+    QString m_newVersion;
+
+    /*
+     * Checking if the required update is deployment update or system upgrade
+     * by default isDeploymentUpdate is true
+     */
+    bool isDeploymentUpdate;
+
+    /*
+     * Extracting the new avaliable version of the deployment from the output
+     * resulting from QProcess update deployment and setting the current running
+     * deployment resource to AbstractResource::Upgradeable
+     */
+    void checkForUpdatesNeeded();
+};
+
+#endif
\ No newline at end of file

libdiscover/backends/RpmOstreeBackend/RpmOstreeNotifier.cpp

+/*
+ *   SPDX-FileCopyrightText: 2021 Mariam Fahmy Sobhy <mariamfahmy66@gmail.com>
+ *
+ *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+ */
+
+#include "RpmOstreeNotifier.h"
+#include <QDebug>
+#include <QFileSystemWatcher>
+#include <QProcess>
+#include <QTimer>
+
+RpmOstreeNotifier::RpmOstreeNotifier(QObject *parent)
+    : BackendNotifierModule(parent)
+    , m_newUpdate(false)
+    , m_needsReboot(false)
+{
+    QFileSystemWatcher *watcher = new QFileSystemWatcher(this);
+    watcher->addPath(QStringLiteral("/ostree/deploy/fedora/deploy/"));
+    connect(watcher, &QFileSystemWatcher::fileChanged, this, &RpmOstreeNotifier::recheckSystemUpdateNeeded);
+
+    QFileSystemWatcher *fileWatcher = new QFileSystemWatcher(this);
+    fileWatcher->addPath(QStringLiteral("/tmp/discover-ostree-changed"));
+    connect(fileWatcher, &QFileSystemWatcher::fileChanged, this, &RpmOstreeNotifier::nowNeedsReboot);
+}
+
+RpmOstreeNotifier::~RpmOstreeNotifier()
+{
+}
+
+void RpmOstreeNotifier::recheckSystemUpdateNeeded()
+{
+    QProcess *process = new QProcess();
+
+    connect(process, &QProcess::readyReadStandardError, [process]() {
+        QByteArray readError = process->