Support D-Bus activation

Telegram/CMakeLists.txt

@@ -1730,5 +1730,6 @@ if (LINUX AND DESKTOP_APP_USE_PACKAGED)
     install(FILES "Resources/art/icon256.png" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/256x256/apps" RENAME "telegram.png")
     install(FILES "Resources/art/icon512.png" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/512x512/apps" RENAME "telegram.png")
     install(FILES "../lib/xdg/org.telegram.desktop.desktop" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/applications")
+    install(FILES "../lib/xdg/org.telegram.desktop.service" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/dbus-1/services")
     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/org.telegram.desktop.metainfo.xml" DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/metainfo")
 endif()

Telegram/SourceFiles/platform/linux/specific_linux.cpp

@@ -322,6 +322,55 @@ bool GenerateDesktopFile(
 	return true;
 }
 
+bool GenerateServiceFile(bool silent = false) {
+	const auto executable = ExecutablePathForShortcuts();
+	if (executable.isEmpty()) {
+		return false;
+	}
+
+	const auto targetPath = QStandardPaths::writableLocation(
+		QStandardPaths::GenericDataLocation) + u"/dbus-1/services/"_q;
+
+	const auto targetFile = targetPath
+		+ QGuiApplication::desktopFileName().chopped(8)
+		+ u".service"_q;
+
+	DEBUG_LOG(("App Info: placing .service file to %1").arg(targetPath));
+	if (!QDir(targetPath).exists()) QDir().mkpath(targetPath);
+
+	const auto target = Glib::KeyFile::create();
+	constexpr auto group = "D-BUS Service";
+
+	target->set_string(
+		group,
+		"Name",
+		QGuiApplication::desktopFileName().chopped(8).toStdString());
+
+	target->set_string(
+		group,
+		"Exec",
+		KShell::joinArgs({ executable }).replace(
+			'\\',
+			qstr("\\\\")).toStdString());
+
+	try {
+		target->save_to_file(targetFile.toStdString());
+	} catch (const std::exception &e) {
+		if (!silent) {
+			LOG(("App Error: %1").arg(QString::fromStdString(e.what())));
+		}
+		return false;
+	}
+
+	QProcess::execute(u"systemctl"_q, {
+		u"--user"_q,
+		u"reload"_q,
+		u"dbus"_q,
+	});
+
+	return true;
+}
+
 void InstallLauncher() {
 	static const auto DisabledByEnv = !qEnvironmentVariableIsEmpty(
 		"DESKTOPINTEGRATION");
@@ -335,6 +384,7 @@ void InstallLauncher() {
 		QStandardPaths::ApplicationsLocation) + '/';
 
 	GenerateDesktopFile(applicationsPath);
+	GenerateServiceFile();
 
 	const auto icons = QStandardPaths::writableLocation(
 		QStandardPaths::GenericDataLocation) + u"/icons/"_q;

lib/xdg/org.telegram.desktop.desktop

@@ -11,6 +11,7 @@ Categories=Chat;Network;InstantMessaging;Qt;
 MimeType=x-scheme-handler/tg;
 Keywords=tg;chat;im;messaging;messenger;sms;tdesktop;
 Actions=quit;
+DBusActivatable=true
 SingleMainWindow=true
 X-GNOME-UsesNotifications=true
 X-GNOME-SingleWindow=true

lib/xdg/org.telegram.desktop.service

@@ -0,0 +1,3 @@
+[D-BUS Service]
+Name=org.telegram.desktop
+Exec=telegram-desktop