Add basic update checking

build/data/obs-studio/locale/en-US.ini

@@ -56,6 +56,10 @@ LicenseAgreement.ClickIAgreeToContinue="If you accept the terms of the agreement
 LicenseAgreement.IAgree="I Agree"
 LicenseAgreement.Exit="Exit"
 
+# update dialog
+UpdateAvailable="New Update Available"
+UpdateAvailable.Text="Version %1.%2.%3 is now available.  <a href='%4'>Click here to download</a>"
+
 # audio device names
 Basic.DesktopDevice1="Desktop Audio"
 Basic.DesktopDevice2="Desktop Audio 2"
@@ -164,6 +168,7 @@ Basic.MainMenu.Help="&Help"
 Basic.MainMenu.Help.Logs="&Log Files"
 Basic.MainMenu.Help.Logs.UploadCurrentLog="Upload &Current Log File"
 Basic.MainMenu.Help.Logs.UploadLastLog="Upload &Last Log File"
+Basic.MainMenu.Help.CheckForUpdates="Check For Updates"
 
 # basic mode settings dialog
 Basic.Settings.ProgramRestart="The program must be restarted for these settings to take effect."

obs/forms/OBSBasic.ui

@@ -468,6 +468,7 @@
      <addaction name="actionUploadLastLog"/>
     </widget>
     <addaction name="menuLogFiles"/>
+    <addaction name="actionCheckForUpdates"/>
    </widget>
    <widget class="QMenu" name="menuBasic_MainMenu_Edit">
     <property name="title">
@@ -768,6 +769,11 @@
     <string>Ctrl+End</string>
    </property>
   </action>
+  <action name="actionCheckForUpdates">
+   <property name="text">
+    <string>Basic.MainMenu.Help.CheckForUpdates</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

obs/window-basic-main.cpp

@@ -16,6 +16,7 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
 
+#include <time.h>
 #include <obs.hpp>
 #include <QMessageBox>
 #include <QShowEvent>
@@ -551,6 +552,7 @@ void OBSBasic::OBSInit()
 	Load(savePath);
 	ResetAudioDevices();
 
+	TimedCheckForUpdates();
 	loaded = true;
 }
 
@@ -831,6 +833,101 @@ bool OBSBasic::QueryRemoveSource(obs_source_t source)
 	return button == QMessageBox::Yes;
 }
 
+#define UPDATE_CHECK_INTERVAL (60*60*24*4) /* 4 days */
+
+void OBSBasic::TimedCheckForUpdates()
+{
+	long long lastUpdate = config_get_int(App()->GlobalConfig(), "General",
+			"LastUpdateCheck");
+	uint32_t lastVersion = config_get_int(App()->GlobalConfig(), "General",
+			"LastVersion");
+
+	if (lastVersion < LIBOBS_API_VER) {
+		lastUpdate = 0;
+		config_set_int(App()->GlobalConfig(), "General",
+				"LastUpdateCheck", 0);
+	}
+
+	long long t    = (long long)time(nullptr);
+	long long secs = t - lastUpdate;
+
+	if (secs > UPDATE_CHECK_INTERVAL)
+		CheckForUpdates();
+}
+
+void OBSBasic::CheckForUpdates()
+{
+	ui->actionCheckForUpdates->setEnabled(false);
+
+	QUrl url("https://obsproject.com/obs2_update/mac_basic.json");
+	updateReply = networkManager.get(QNetworkRequest(url));
+	connect(updateReply, SIGNAL(finished()),
+			this, SLOT(updateFileFinished()));
+	connect(updateReply, SIGNAL(readyRead()),
+			this, SLOT(updateFileRead()));
+}
+
+void OBSBasic::updateFileRead()
+{
+	updateReturnData.push_back(updateReply->readAll());
+}
+
+void OBSBasic::updateFileFinished()
+{
+	ui->actionCheckForUpdates->setEnabled(true);
+
+	if (updateReply->error()) {
+		blog(LOG_WARNING, "Update check failed: %s",
+				QT_TO_UTF8(updateReply->errorString()));
+		return;
+	}
+
+	const char *jsonReply = updateReturnData.constData();
+	if (!jsonReply || !*jsonReply)
+		return;
+
+	obs_data_t returnData   = obs_data_create_from_json(jsonReply);
+	obs_data_t versionData  = obs_data_getobj(returnData, "version");
+	const char *description = obs_data_getstring(returnData, "description");
+	const char *download    = obs_data_getstring(returnData, "download");
+
+	if (returnData && versionData && description && download) {
+		long major   = obs_data_getint(versionData, "major");
+		long minor   = obs_data_getint(versionData, "minor");
+		long patch   = obs_data_getint(versionData, "patch");
+		long version = MAKE_SEMANTIC_VERSION(major, minor, patch);
+
+		blog(LOG_INFO, "Update check: latest version is: %ld.%ld.%ld",
+				major, minor, patch);
+
+		if (version > LIBOBS_API_VER) {
+			QString     str = QTStr("UpdateAvailable.Text");
+			QMessageBox messageBox(this);
+
+			str = str.arg(QString::number(major),
+			              QString::number(minor),
+			              QString::number(patch),
+			              download);
+
+			messageBox.setWindowTitle(QTStr("UpdateAvailable"));
+			messageBox.setTextFormat(Qt::RichText);
+			messageBox.setText(str);
+			messageBox.setInformativeText(QT_UTF8(description));
+			messageBox.exec();
+
+			long long t = (long long)time(nullptr);
+			config_set_int(App()->GlobalConfig(), "General",
+					"LastUpdateCheck", t);
+			config_save(App()->GlobalConfig());
+		}
+	} else {
+		blog(LOG_WARNING, "Bad JSON file received from server");
+	}
+
+	obs_data_release(versionData);
+	obs_data_release(returnData);
+}
+
 void OBSBasic::RemoveSelectedScene()
 {
 	OBSScene scene = GetCurrentScene();
@@ -1626,6 +1723,11 @@ void OBSBasic::on_actionUploadLastLog_triggered()
 	UploadLog(App()->GetLastLog());
 }
 
+void OBSBasic::on_actionCheckForUpdates_triggered()
+{
+	CheckForUpdates();
+}
+
 void OBSBasic::logUploadRead()
 {
 	logUploadReturnData.push_back(logUploadReply->readAll());

obs/window-basic-main.hpp

@@ -69,6 +69,10 @@ private:
 	QNetworkReply *logUploadReply = nullptr;
 	QByteArray    logUploadReturnData;
 
+	QBuffer       updatePostData;
+	QNetworkReply *updateReply = nullptr;
+	QByteArray    updateReturnData;
+
 	obs_output_t  fileOutput = nullptr;
 	obs_output_t  streamOutput = nullptr;
 	obs_service_t service = nullptr;
@@ -120,6 +124,9 @@ private:
 
 	bool          QueryRemoveSource(obs_source_t source);
 
+	void          TimedCheckForUpdates();
+	void          CheckForUpdates();
+
 	void GetFPSCommon(uint32_t &num, uint32_t &den) const;
 	void GetFPSInteger(uint32_t &num, uint32_t &den) const;
 	void GetFPSFraction(uint32_t &num, uint32_t &den) const;
@@ -221,6 +228,7 @@ private slots:
 	void on_action_Settings_triggered();
 	void on_actionUploadCurrentLog_triggered();
 	void on_actionUploadLastLog_triggered();
+	void on_actionCheckForUpdates_triggered();
 
 	void on_actionEditTransform_triggered();
 	void on_actionResetTransform_triggered();
@@ -262,6 +270,9 @@ private slots:
 	void logUploadRead();
 	void logUploadFinished();
 
+	void updateFileRead();
+	void updateFileFinished();
+
 	void AddSourceFromAction();
 
 	void EditSceneName();