Improve integrated update code to match the rest

We're doing updates over HTTP until we get a domain name and a cert, but this is not at all an issue since updates are still signed and checked.
2024-03-22 14:00:36 +08:00 · 2015-12-10 18:46:07 +01:00 · 2015-12-10 18:46:07 +01:00 · d67e6c7449
commit d67e6c7449
parent 6606688bf3
11 changed files with 214 additions and 46 deletions
--- a/qtox.pro
+++ b/qtox.pro
@ -47,8 +47,14 @@ include(translations/i18n.pri)
 # Build all the qm files now, to make RCC happy
 system($$fromfile(translations/i18n.pri, updateallqm))

+isEmpty(GIT_VERSION) {
    GIT_VERSION = $$system(git rev-parse HEAD 2> /dev/null || echo "built without git")
+}
 DEFINES += GIT_VERSION=\"\\\"$$quote($$GIT_VERSION)\\\"\"
+isEmpty(GIT_DESCRIBE) {
+    GIT_DESCRIBE = $$system(git describe --tags 2> /dev/null || echo "Nightly")
+}
+DEFINES += GIT_DESCRIBE=\"\\\"$$quote($$GIT_DESCRIBE)\\\"\"
 # date works on linux/mac, but it would hangs qmake on windows
 # This hack returns 0 on batch (windows), but executes "date +%s" or return 0 if it fails on bash (linux/mac)
 TIMESTAMP = $$system($1 2>null||echo 0||a;rm null;date +%s||echo 0) # I'm so sorry
--- a/src/main.cpp
+++ b/src/main.cpp
@ -90,6 +90,8 @@ void logMessageHandler(QtMsgType type, const QMessageLogContext& ctxt, const QSt
 #endif
 }

+#include <windows.h>
+
 int main(int argc, char *argv[])
 {
    qInstallMessageHandler(logMessageHandler); // Enable log as early as possible
@ -127,7 +129,7 @@ int main(int argc, char *argv[])
    if (logFileFile->open(QIODevice::Append))
    {
        logFileStream->setDevice(logFileFile.get());
-        *logFileStream << QDateTime::currentDateTime().toString("\nyyyy-MM-dd HH:mm:ss' file logger starting\n'");
+        *logFileStream << QDateTime::currentDateTime().toString("\nyyyy-MM-dd HH:mm:ss' qTox file logger starting\n'");
    }
    else
    {
@ -143,6 +145,10 @@ int main(int argc, char *argv[])
    qDebug() << "built on: " << __TIME__ << __DATE__ << "(" << TIMESTAMP << ")";
    qDebug() << "commit: " << GIT_VERSION << "\n";

+    long unsigned int bufsize=100;
+    char buf[100];
+    GetUserNameA(buf, &bufsize);
+
 #if defined(Q_OS_MACX) && defined(QT_RELEASE)
    osx::moveToAppFolder();
 #endif
--- a/src/net/autoupdate.cpp
+++ b/src/net/autoupdate.cpp
@ -23,6 +23,7 @@
 #include "src/persistence/settings.h"
 #include "src/widget/widget.h"
 #include "src/widget/gui.h"
+#include "src/nexus.h"
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
 #include <QCoreApplication>
@ -31,6 +32,8 @@
 #include <QProcess>
 #include <QtConcurrent/QtConcurrent>
 #include <QMessageBox>
+#include <QMutexLocker>
+#include <iostream>

 #ifdef Q_OS_WIN
 #include <windows.h>
@ -72,8 +75,11 @@ unsigned char AutoUpdater::key[crypto_sign_PUBLICKEYBYTES];
 const QString AutoUpdater::checkURI = AutoUpdater::updateServer+"/qtox/"+AutoUpdater::platform+"/version";
 const QString AutoUpdater::flistURI = AutoUpdater::updateServer+"/qtox/"+AutoUpdater::platform+"/flist";
 const QString AutoUpdater::filesURI = AutoUpdater::updateServer+"/qtox/"+AutoUpdater::platform+"/files/";
-bool AutoUpdater::abortFlag{false};
+std::atomic_bool AutoUpdater::abortFlag{false};
 std::atomic_bool AutoUpdater::isDownloadingUpdate{false};
+std::atomic<float> AutoUpdater::progressValue{0};
+QString AutoUpdater::progressVersion;
+QMutex AutoUpdater::progressVersionMutex;

 bool AutoUpdater::isUpdateAvailable()
 {
@ -97,7 +103,11 @@ AutoUpdater::VersionInfo AutoUpdater::getUpdateVersion()
    QNetworkAccessManager *manager = new QNetworkAccessManager;
    QNetworkReply* reply = manager->get(QNetworkRequest(QUrl(checkURI)));
    while (!reply->isFinished())
+    {
+        if (abortFlag)
+            return versionInfo;
        qApp->processEvents();
+    }

    if (reply->error() != QNetworkReply::NoError)
    {
@ -207,7 +217,11 @@ QByteArray AutoUpdater::getUpdateFlist()
    QNetworkAccessManager *manager = new QNetworkAccessManager;
    QNetworkReply* reply = manager->get(QNetworkRequest(QUrl(flistURI)));
    while (!reply->isFinished())
+    {
+        if (abortFlag)
+            return flist;
        qApp->processEvents();
+    }

    if (reply->error() != QNetworkReply::NoError)
    {
@ -238,8 +252,6 @@ QList<AutoUpdater::UpdateFileMeta> AutoUpdater::genUpdateDiff(QList<UpdateFileMe
 bool AutoUpdater::isUpToDate(AutoUpdater::UpdateFileMeta fileMeta)
 {
    QString appDir = qApp->applicationDirPath();
-    qDebug() << "App path:"<<appDir;
-
    QFile file(appDir+QDir::separator()+fileMeta.installpath);
    if (!file.open(QIODevice::ReadOnly))
        return false;
@ -252,13 +264,15 @@ bool AutoUpdater::isUpToDate(AutoUpdater::UpdateFileMeta fileMeta)
    return true;
 }

-AutoUpdater::UpdateFile AutoUpdater::getUpdateFile(UpdateFileMeta fileMeta)
+AutoUpdater::UpdateFile AutoUpdater::getUpdateFile(UpdateFileMeta fileMeta,
+                                        std::function<void(int,int)> progressCallback)
 {
    UpdateFile file;
    file.metadata = fileMeta;

    QNetworkAccessManager *manager = new QNetworkAccessManager;
    QNetworkReply* reply = manager->get(QNetworkRequest(QUrl(filesURI+fileMeta.id)));
+    QObject::connect(reply, &QNetworkReply::downloadProgress, progressCallback);
    while (!reply->isFinished())
    {
        if (abortFlag)
@ -297,6 +311,9 @@ bool AutoUpdater::downloadUpdate()
    QList<UpdateFileMeta> newFlist = parseFlist(newFlistData);
    QList<UpdateFileMeta> diff = genUpdateDiff(newFlist);

+    // Progress
+    progressValue = 0;
+
    if (abortFlag)
    {
        isDownloadingUpdate = false;
@ -329,9 +346,17 @@ bool AutoUpdater::downloadUpdate()
    newFlistFile.write(newFlistData);
    newFlistFile.close();

+    progressValue = 1;
+
    // Download and write each new file
    for (UpdateFileMeta fileMeta : diff)
    {
+        float initialProgress = progressValue, step = 99./diff.size();
+        auto stepProgressCallback = [&](int current, int total)
+        {
+            progressValue = initialProgress + step * (float)current/total;
+        };
+
        if (abortFlag)
        {
            isDownloadingUpdate = false;
@ -355,17 +380,13 @@ bool AutoUpdater::downloadUpdate()
            QDir().mkpath(fileDirStr);

        // Download
-        UpdateFile file = getUpdateFile(fileMeta);
+        UpdateFile file = getUpdateFile(fileMeta, stepProgressCallback);
        if (abortFlag)
-        {
-            isDownloadingUpdate = false;
-            return false;
-        }
+            goto fail;
        if (file.data.isNull())
        {
            qCritical() << "downloadUpdate: Error downloading a file, aborting...";
-            isDownloadingUpdate = false;
-            return false;
+            goto fail;
        }

        // Check signature
@ -373,25 +394,32 @@ bool AutoUpdater::downloadUpdate()
                                        file.data.size(), key) != 0)
        {
            qCritical() << "downloadUpdate: RECEIVED FORGED FILE, aborting...";
-            isDownloadingUpdate = false;
-            return false;
+            goto fail;
        }

        // Save
        if (!fileFile.open(QIODevice::WriteOnly | QIODevice::Truncate))
        {
            qCritical() << "downloadUpdate: Can't save new update file, aborting...";
-            isDownloadingUpdate = false;
-            return false;
+            goto fail;
        }
        fileFile.write(file.data);
        fileFile.close();
+
+        progressValue = initialProgress + step;
    }

    qDebug() << "downloadUpdate: The update is ready, it'll be installed on the next restart";

    isDownloadingUpdate = false;
+    progressValue = 100;
    return true;
+
+fail:
+    isDownloadingUpdate = false;
+    progressValue = 0;
+    setProgressVersion("");
+    return false;
 }

 bool AutoUpdater::isLocalUpdateReady()
@ -437,43 +465,36 @@ void AutoUpdater::installLocalUpdate()
 {
    qDebug() << "About to start the qTox updater to install a local update";

-    // Delete the update if we fail so we don't fail again.
-
-    // Updates only for supported platforms.
-    if (platform.isEmpty())
+    // Prepare to delete the update if we fail so we don't fail again.
+    auto failExit = []()
    {
        qCritical() << "Failed to start the qTox updater, removing the update and exiting";
        QString updateDirStr = Settings::getInstance().getSettingsDirPath() + "/update/";
        QDir(updateDirStr).removeRecursively();
        exit(-1);
-    }
+    };
+
+    // Updates only for supported platforms.
+    if (platform.isEmpty())
+        failExit();

    // Workaround QTBUG-7645
    // QProcess fails silently when elevation is required instead of showing a UAC prompt on Win7/Vista
 #ifdef Q_OS_WIN
-    HINSTANCE result = ::ShellExecuteA(0, "open", updaterBin.toUtf8().constData(), 0, 0, SW_SHOWNORMAL);
+    HINSTANCE result = ::ShellExecuteW(0, L"open", updaterBin.toStdWString().c_str(), 0, 0, SW_SHOWNORMAL);
    if (result == (HINSTANCE)SE_ERR_ACCESSDENIED)
    {
        // Requesting elevation
-        result = ::ShellExecuteA(0, "runas", updaterBin.toUtf8().constData(), 0, 0, SW_SHOWNORMAL);
+        result = ::ShellExecuteW(0, L"runas", updaterBin.toStdWString().c_str(), 0, 0, SW_SHOWNORMAL);
    }
    if (result <= (HINSTANCE)32)
-    {
-        goto fail;
-    }
+        failExit();
 #else
    if (!QProcess::startDetached(updaterBin))
-        goto fail;
+        failExit();
 #endif

    exit(0);
-
-    // Centralized error handling
-fail:
-    qCritical() << "Failed to start the qTox updater, removing the update and exiting";
-    QString updateDirStr = Settings::getInstance().getSettingsDirPath() + "/update/";
-    QDir(updateDirStr).removeRecursively();
-    exit(-1);
 }

 void AutoUpdater::checkUpdatesAsyncInteractive()
@ -497,6 +518,7 @@ void AutoUpdater::checkUpdatesAsyncInteractiveWorker()

    if (updateDir.exists() && QFile(updateDirStr+"flist").exists())
    {
+        setProgressVersion(getUpdateVersion().versionString);
        downloadUpdate();
        return;
    }
@ -513,12 +535,31 @@ void AutoUpdater::checkUpdatesAsyncInteractiveWorker()
    if (GUI::askQuestion(QObject::tr("Update", "The title of a message box"),
                              contentText, true, false))
    {
+        setProgressVersion(newVersion.versionString);
+        GUI::showUpdateDownloadProgress();
        downloadUpdate();
    }
 }

+void AutoUpdater::setProgressVersion(QString version)
+{
+    QMutexLocker lock(&progressVersionMutex);
+    progressVersion = version;
+}
+
 void AutoUpdater::abortUpdates()
 {
    abortFlag = true;
    isDownloadingUpdate = false;
 }
+
+QString AutoUpdater::getProgressVersion()
+{
+    QMutexLocker lock(&progressVersionMutex);
+    return progressVersion;
+}
+
+int AutoUpdater::getProgressValue()
+{
+    return progressValue;
+}
--- a/src/net/autoupdate.h
+++ b/src/net/autoupdate.h
@ -23,8 +23,10 @@

 #include <QString>
 #include <QList>
+#include <QMutex>
 #include <sodium.h>
 #include <atomic>
+#include <functional>

 /// For now we only support auto updates on Windows and OS X, although extending it is not a technical issue.
 /// Linux users are expected to use their package managers or update manually through official channels.
@ -94,6 +96,9 @@ public:
    /// Aborting will make some functions try to return early
    /// Call before qTox exits to avoid the updater running in the background
    static void abortUpdates();
+    /// Functions giving info on the progress of update downloads
+    static QString getProgressVersion();
+    static int getProgressValue();

 protected:
    /// Parses and validates a flist file. Returns an empty list on error
@ -108,10 +113,12 @@ protected:
    /// Tries to fetch the file from the update server. Returns a file with a null QByteArray on error.
    /// Note that a file with an empty but non-null QByteArray is not an error, merely a file of size 0.
    /// Will try to follow qTox's proxy settings, may block and processEvents
-    static UpdateFile getUpdateFile(UpdateFileMeta fileMeta);
+    static UpdateFile getUpdateFile(UpdateFileMeta fileMeta, std::function<void(int,int)> progressCallback);
    /// Does the actual work for checkUpdatesAsyncInteractive
    /// Blocking, but otherwise has the same properties than checkUpdatesAsyncInteractive
    static void checkUpdatesAsyncInteractiveWorker();
+    /// Thread safe setter
+    static void setProgressVersion(QString version);

 private:
    AutoUpdater() = delete;
@ -125,8 +132,11 @@ private:
    static const QString filesURI; ///< URI of the actual files of the latest version
    static const QString updaterBin; ///< Path to the qtox-updater binary
    static unsigned char key[];
-    static bool abortFlag; ///< If true, try to abort everything.
+    static std::atomic_bool abortFlag; ///< If true, try to abort everything.
    static std::atomic_bool isDownloadingUpdate; ///< We'll pretend there's no new update available if we're already updating
+    static std::atomic<float> progressValue;
+    static QString progressVersion;
+    static QMutex progressVersionMutex; ///< No, we can't just make the QString atomic
 };

 #endif // AUTOUPDATE_H
--- a/src/widget/form/settings/aboutform.cpp
+++ b/src/widget/form/settings/aboutform.cpp
@ -22,6 +22,9 @@
 #include "aboutform.h"
 #include "src/widget/translator.h"
 #include "tox/tox.h"
+#include "src/net/autoupdate.h"
+#include <QTimer>
+#include <QDebug>

 AboutForm::AboutForm() :
    GenericForm(QPixmap(":/img/settings/general.png"))
@ -33,6 +36,12 @@ AboutForm::AboutForm() :
    if (QString(GIT_VERSION).indexOf(" ") > -1)
        bodyUI->gitVersion->setOpenExternalLinks(false);

+    showUpdateProgress();
+    progressTimer = new QTimer();
+    progressTimer->setInterval(500);
+    progressTimer->setSingleShot(false);
+    connect(progressTimer, &QTimer::timeout, this, &AboutForm::showUpdateProgress);
+
    Translator::registerHandler(std::bind(&AboutForm::retranslateUi, this), this);
 }

@ -40,6 +49,7 @@ AboutForm::AboutForm() :
 //nightly builds from stable releases.
 void AboutForm::replaceVersions()
 {
+    bodyUI->youareusing->setText(bodyUI->youareusing->text().replace("$GIT_DESCRIBE", QString(GIT_DESCRIBE)));
    bodyUI->gitVersion->setText(bodyUI->gitVersion->text().replace("$GIT_VERSION", QString(GIT_VERSION)));
    bodyUI->toxCoreVersion->setText(
                bodyUI->toxCoreVersion->text().replace("$TOXCOREVERSION",
@ -52,11 +62,46 @@ void AboutForm::replaceVersions()
 AboutForm::~AboutForm()
 {
    Translator::unregister(this);
+    delete progressTimer;
    delete bodyUI;
 }

+void AboutForm::showUpdateProgress()
+{
+    QString version = AutoUpdater::getProgressVersion();
+    int value = AutoUpdater::getProgressValue();
+
+    if (version.isEmpty())
+    {
+        bodyUI->updateProgress->setVisible(value != 0);
+        bodyUI->updateText->setVisible(value != 0);
+    }
+    else
+    {
+        if (value == 100)
+            bodyUI->updateText->setText(tr("Restart qTox to install version %1").arg(version));
+        else
+            bodyUI->updateText->setText(tr("qTox is downloading update %1", "%1 is the version of the update").arg(version));
+        bodyUI->updateProgress->setValue(value);
+
+        bodyUI->updateProgress->setVisible(value != 0 && value != 100);
+        bodyUI->updateText->setVisible(value != 0);
+    }
+}
+
+void AboutForm::hideEvent(QHideEvent *)
+{
+    progressTimer->stop();
+}
+
+void AboutForm::showEvent(QShowEvent *)
+{
+    progressTimer->start();
+}
+
 void AboutForm::retranslateUi()
 {
    bodyUI->retranslateUi(this);
    replaceVersions();
+    showUpdateProgress();
 }
--- a/src/widget/form/settings/aboutform.h
+++ b/src/widget/form/settings/aboutform.h
@ -23,6 +23,7 @@
 #include "genericsettings.h"

 class Core;
+class QTimer;

 namespace Ui {
 class AboutSettings;
@ -39,6 +40,9 @@ public:
 protected:

 private slots:
+    void showUpdateProgress();
+    virtual void hideEvent(QHideEvent*) final override;
+    virtual void showEvent(QShowEvent*) final override;

 private:
    void retranslateUi();
@ -46,6 +50,7 @@ private:

 private:
    Ui::AboutSettings* bodyUI;
+    QTimer* progressTimer;
 };

 #endif // ABOUTFORM_H
--- a/src/widget/form/settings/aboutsettings.ui
+++ b/src/widget/form/settings/aboutsettings.ui
@ -30,8 +30,8 @@
       <rect>
        <x>0</x>
        <y>0</y>
-        <width>496</width>
-        <height>565</height>
+        <width>493</width>
+        <height>534</height>
       </rect>
      </property>
      <layout class="QVBoxLayout" name="verticalLayout_2" stretch="0,1,0,0">
@ -128,7 +128,7 @@
             <enum>QFrame::NoFrame</enum>
            </property>
            <property name="text">
-             <string>You are using a qTox nightly build.</string>
+             <string>You are using qTox version $GIT_DESCRIBE.</string>
            </property>
            <property name="indent">
             <number>-1</number>
@ -141,6 +141,32 @@
            </property>
           </widget>
          </item>
+          <item row="4" column="0" colspan="2">
+           <widget class="QProgressBar" name="updateProgress">
+            <property name="value">
+             <number>0</number>
+            </property>
+            <property name="alignment">
+             <set>Qt::AlignCenter</set>
+            </property>
+            <property name="textVisible">
+             <bool>true</bool>
+            </property>
+            <property name="format">
+             <string>Downloading update: %p%</string>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="0" colspan="2">
+           <widget class="QLabel" name="updateText">
+            <property name="text">
+             <string>Update text</string>
+            </property>
+            <property name="alignment">
+             <set>Qt::AlignCenter</set>
+            </property>
+           </widget>
+          </item>
         </layout>
        </widget>
       </item>
@ -183,12 +209,12 @@
             <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
 &lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
 p, li { white-space: pre-wrap; }
-&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Oxygen-Sans'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;
-&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Sans Serif'; color:#000000;&quot;&gt;Copyright © 2014-2015 by The qTox Project&lt;/span&gt;&lt;/p&gt;
-&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu';&quot;&gt;qTox is a Qt-based graphical interface for Tox.&lt;/span&gt;&lt;/p&gt;
-&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Sans Serif';&quot;&gt;qTox is libre software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.&lt;/span&gt;&lt;/p&gt;
-&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Sans Serif';&quot;&gt;qTox is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. &lt;/span&gt;&lt;/p&gt;
-&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu';&quot;&gt;You should have received a copy of the GNU General Public License along with this program. If not, see &lt;/span&gt;&lt;a href=&quot;https://www.gnu.org/copyleft/gpl.html&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; text-decoration: underline; color:#007af4;&quot;&gt;https://www.gnu.org/copyleft/gpl.html&lt;/span&gt;&lt;/a&gt;&lt;span style=&quot; font-family:'Ubuntu';&quot;&gt;.&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'MS Shell Dlg 2'; font-size:8.25pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Sans Serif'; font-size:10pt; color:#000000;&quot;&gt;Copyright © 2014-2015 by The qTox Project&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:10pt;&quot;&gt;qTox is a Qt-based graphical interface for Tox.&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Sans Serif'; font-size:10pt;&quot;&gt;qTox is libre software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Sans Serif'; font-size:10pt;&quot;&gt;qTox is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. &lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:10pt;&quot;&gt;You should have received a copy of the GNU General Public License along with this program. If not, see &lt;/span&gt;&lt;a href=&quot;https://www.gnu.org/copyleft/gpl.html&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:10pt; text-decoration: underline; color:#007af4;&quot;&gt;https://www.gnu.org/copyleft/gpl.html&lt;/span&gt;&lt;/a&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:10pt;&quot;&gt;.&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
            </property>
            <property name="searchPaths">
             <stringlist/>
--- a/src/widget/gui.cpp
+++ b/src/widget/gui.cpp
@ -101,6 +101,18 @@ void GUI::reloadTheme()
    }
 }

+void GUI::showUpdateDownloadProgress()
+{
+    if (QThread::currentThread() == qApp->thread())
+    {
+        getInstance()._showUpdateDownloadProgress();
+    }
+    else
+    {
+        QMetaObject::invokeMethod(&getInstance(), "_showUpdateDownloadProgress", Qt::BlockingQueuedConnection);
+    }
+}
+
 void GUI::showInfo(const QString& title, const QString& msg)
 {
    if (QThread::currentThread() == qApp->thread())
@ -267,6 +279,13 @@ void GUI::_showError(const QString& title, const QString& msg)
    QMessageBox::critical(getMainWidget(), title, msg);
 }

+void GUI::_showUpdateDownloadProgress()
+{
+#ifndef Q_OS_ANDROID
+    Nexus::getDesktopGUI()->showUpdateDownloadProgress();
+#endif
+}
+
 bool GUI::_askQuestion(const QString& title, const QString& msg,
                       bool defaultAns, bool warning,
                       bool yesno)
--- a/src/widget/gui.h
+++ b/src/widget/gui.h
@ -45,6 +45,8 @@ public:
    static void setWindowTitle(const QString& title);
    /// Reloads the application theme and redraw the window
    static void reloadTheme();
+    /// Optionally switches to a view of the qTox update being downloaded
+    static void showUpdateDownloadProgress();
    /// Show some text to the user, for example in a message box
    static void showInfo(const QString& title, const QString& msg);
    /// Show a warning to the user, for example in a message box
@ -93,6 +95,7 @@ private slots:
    void _showInfo(const QString& title, const QString& msg);
    void _showWarning(const QString& title, const QString& msg);
    void _showError(const QString& title, const QString& msg);
+    void _showUpdateDownloadProgress();
    bool _askQuestion(const QString& title, const QString& msg,
                      bool defaultAns = false, bool warning = true,
                      bool yesno = true);
--- a/src/widget/widget.cpp
+++ b/src/widget/widget.cpp
@ -484,6 +484,12 @@ Widget* Widget::getInstance()
    return instance;
 }

+void Widget::showUpdateDownloadProgress()
+{
+    settingsWidget->showAbout();
+    onSettingsClicked();
+}
+
 void Widget::moveEvent(QMoveEvent *event)
 {
    if (event->type() == QEvent::Move)
--- a/src/widget/widget.h
+++ b/src/widget/widget.h
@ -65,6 +65,7 @@ public:
    QString getUsername();
    Camera* getCamera();
    static Widget* getInstance();
+    void showUpdateDownloadProgress(); ///< Switches to the About settings page
    void addFriendDialog(Friend* frnd, ContentDialog* dialog);
    void addGroupDialog(Group* group, ContentDialog* dialog);
    bool newFriendMessageAlert(int friendId, bool sound=true);