Add update check(#684) (#704)

* Add update check(#684)

src/Cutter.pro

@@ -17,7 +17,7 @@ ICON = img/cutter.icns
 # Icon/resources for Windows
 win32: RC_ICONS = img/cutter.ico
 
-QT += core gui widgets svg
+QT += core gui widgets svg network
 QT_CONFIG -= no-pkg-config
 CONFIG += c++11
 

src/dialogs/AboutDialog.cpp

@@ -5,6 +5,14 @@
 #include "r_version.h"
 #include "utils/Configuration.h"
 
+#include <QUrl>
+#include <QTimer>
+#include <QJsonObject>
+#include <QProgressBar>
+#include <QProgressDialog>
+#include <QtNetwork/QNetworkRequest>
+#include <QtNetwork/QNetworkAccessManager>
+
 #include "CutterConfig.h"
 
 AboutDialog::AboutDialog(QWidget *parent) :
@@ -51,7 +59,7 @@ void AboutDialog::on_buttonBox_rejected()
 void AboutDialog::on_showVersionButton_clicked()
 {
     QMessageBox popup(this);
-    popup.setWindowTitle("radare2 version information");
+    popup.setWindowTitle(tr("radare2 version information"));
     auto versionInformation = Core()->getVersionInformation();
     popup.setText(versionInformation);
     popup.exec();
@@ -62,3 +70,69 @@ void AboutDialog::on_showPluginsButton_clicked()
     R2PluginsDialog dialog(this);
     dialog.exec();
 }
+
+void AboutDialog::on_checkForUpdatesButton_clicked()
+{
+    QUrl url("https://api.github.com/repos/radareorg/cutter/releases/latest");
+    QNetworkRequest request;
+    request.setUrl(url);
+
+    QProgressDialog waitDialog;
+    QProgressBar *bar = new QProgressBar(&waitDialog);
+    bar->setMaximum(0);
+
+    waitDialog.setBar(bar);
+    waitDialog.setLabel(new QLabel(tr("Checking for updates..."), &waitDialog));
+
+    QNetworkAccessManager nm;
+
+    QTimer timeoutTimer;
+    timeoutTimer.setSingleShot(true);
+    timeoutTimer.setInterval(7000);
+
+    connect(&nm, &QNetworkAccessManager::finished, &timeoutTimer, &QTimer::stop);
+    connect(&nm, &QNetworkAccessManager::finished, &waitDialog, &QProgressDialog::cancel);
+    connect(&nm, &QNetworkAccessManager::finished, this, &AboutDialog::serveVersionCheckReply);
+
+    QNetworkReply *reply = nm.get(request);
+    timeoutTimer.start();
+
+    connect(&timeoutTimer, &QTimer::timeout, []() {
+        QMessageBox mb;
+        mb.setIcon(QMessageBox::Critical);
+        mb.setStandardButtons(QMessageBox::Ok);
+        mb.setWindowTitle(tr("Timeout error!"));
+        mb.setText(tr("Please check your internet connection and try again."));
+        mb.exec();
+    });
+
+    waitDialog.exec();
+    delete reply;
+}
+
+void AboutDialog::serveVersionCheckReply(QNetworkReply *reply)
+{
+    QString currVersion = "";
+    QMessageBox mb;
+    mb.setStandardButtons(QMessageBox::Ok);
+    if (reply->error()) {
+        mb.setIcon(QMessageBox::Critical);
+        mb.setWindowTitle(tr("Error!"));
+        mb.setText(reply->errorString());
+    } else {
+        currVersion = QJsonDocument::fromJson(reply->readAll()).object().value("tag_name").toString();
+        currVersion.remove('v');
+
+        mb.setWindowTitle(tr("Version control"));
+        mb.setIcon(QMessageBox::Information);
+        if (currVersion == CUTTER_VERSION_FULL) {
+            mb.setText(tr("You have latest version and no need to update!"));
+        } else {
+            mb.setText(tr("<b>Current version</b>: " CUTTER_VERSION_FULL "<br/>"
+                          "<b>Latest version</b>: %1<br/><br/>"
+                          "For update, please check the link: <a href=\"%2\">%2</a>")
+                       .arg(currVersion, "https://github.com/radareorg/cutter/releases"));
+        }
+    }
+    mb.exec();
+}

src/dialogs/AboutDialog.h

@@ -3,6 +3,7 @@
 
 #include <QDialog>
 #include <memory>
+#include <QtNetwork/QNetworkReply>
 
 namespace Ui {
 class AboutDialog;
@@ -20,6 +21,8 @@ private slots:
     void on_buttonBox_rejected();
     void on_showVersionButton_clicked();
     void on_showPluginsButton_clicked();
+    void on_checkForUpdatesButton_clicked();
+    void serveVersionCheckReply(QNetworkReply *reply);
 
 private:
     std::unique_ptr<Ui::AboutDialog> ui;

src/dialogs/AboutDialog.ui

@@ -63,6 +63,19 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QPushButton" name="checkForUpdatesButton">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Check for updates</string>
+         </property>
+        </widget>
+       </item>
       </layout>
      </item>
     </layout>