initial work on adding bundled node-management UI

src/main/java/org/qora/controller/Controller.java

@@ -27,7 +27,7 @@ import org.qora.data.block.BlockData;
 import org.qora.data.network.BlockSummaryData;
 import org.qora.data.network.PeerData;
 import org.qora.data.transaction.TransactionData;
-import org.qora.gui.GUI;
+import org.qora.gui.Gui;
 import org.qora.network.Network;
 import org.qora.network.Peer;
 import org.qora.network.message.BlockMessage;
@@ -50,6 +50,7 @@ import org.qora.repository.hsqldb.HSQLDBRepositoryFactory;
 import org.qora.settings.Settings;
 import org.qora.transaction.Transaction;
 import org.qora.transaction.Transaction.ValidationResult;
+import org.qora.ui.UiService;
 import org.qora.utils.Base58;
 import org.qora.utils.NTP;
 
@@ -159,7 +160,7 @@ public class Controller extends Thread {
 		LOGGER.info("Starting up...");
 
 		// Potential GUI startup with splash screen, etc.
-		GUI.getInstance();
+		Gui.getInstance();
 
 		Security.insertProviderAt(new BouncyCastleProvider(), 0);
 		Security.insertProviderAt(new BouncyCastleJsseProvider(), 1);
@@ -223,8 +224,17 @@ public class Controller extends Thread {
 		LOGGER.info("Starting auto-update");
 		AutoUpdate.getInstance().start();
 
+		LOGGER.info("Starting bundled UI on port " + Settings.getInstance().getUiPort());
+		try {
+			UiService uiService = UiService.getInstance();
+			uiService.start();
+		} catch (Exception e) {
+			LOGGER.error("Unable to start bundled UI", e);
+			System.exit(1);
+		}
+
 		// If GUI is enabled, we're no longer starting up but actually running now
-		GUI.getInstance().notifyRunning();
+		Gui.getInstance().notifyRunning();
 	}
 
 	// Main thread
@@ -319,6 +329,9 @@ public class Controller extends Thread {
 			if (!isStopping) {
 				isStopping = true;
 
+				LOGGER.info("Shutting down bundled UI");
+				UiService.getInstance().stop();
+
 				LOGGER.info("Shutting down auto-update");
 				AutoUpdate.getInstance().shutdown();
 

src/main/java/org/qora/gui/Gui.java

@@ -6,24 +6,34 @@ import java.io.IOException;
 import java.io.InputStream;
 
 import javax.imageio.ImageIO;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
-public class GUI {
+public class Gui {
 
-	private static final Logger LOGGER = LogManager.getLogger(GUI.class);
+	private static final Logger LOGGER = LogManager.getLogger(Gui.class);
-	private static GUI instance;
+	private static Gui instance;
 
 	private boolean isHeadless;
 	private SplashFrame splash = null;
 	private SysTray sysTray = null;
 
-	private GUI() {
+	private Gui() {
 		this.isHeadless = GraphicsEnvironment.isHeadless();
 
-		if (!this.isHeadless)
+		if (!this.isHeadless) {
+			try {
+				UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+			} catch (ClassNotFoundException | InstantiationException | IllegalAccessException
+					| UnsupportedLookAndFeelException e) {
+				// Use whatever look-and-feel comes by default then
+			}
+
 			showSplash();
+		}
 	}
 
 	private void showSplash() {
@@ -40,9 +50,9 @@ public class GUI {
 		}
 	}
 
-	public static GUI getInstance() {
+	public static Gui getInstance() {
 		if (instance == null)
-			instance = new GUI();
+			instance = new Gui();
 
 		return instance;
 	}

src/main/java/org/qora/gui/SplashFrame.java

@@ -26,7 +26,7 @@ public class SplashFrame {
 		private BufferedImage image;
 
 		public SplashPanel() {
-			image = GUI.loadImage("splash.png");
+			image = Gui.loadImage("splash.png");
 			this.setPreferredSize(new Dimension(image.getWidth(), image.getHeight()));
 			this.setLayout(new BorderLayout());
 		}
@@ -42,10 +42,10 @@ public class SplashFrame {
 		this.splashDialog = new JDialog();
 
 		List<Image> icons = new ArrayList<Image>();
-		icons.add(GUI.loadImage("icons/icon16.png"));
+		icons.add(Gui.loadImage("icons/icon16.png"));
-		icons.add(GUI.loadImage("icons/icon32.png"));
+		icons.add(Gui.loadImage("icons/icon32.png"));
-		icons.add(GUI.loadImage("icons/icon64.png"));
+		icons.add(Gui.loadImage("icons/icon64.png"));
-		icons.add(GUI.loadImage("icons/icon128.png"));
+		icons.add(Gui.loadImage("icons/icon128.png"));
 		this.splashDialog.setIconImages(icons);
 
 		this.splashDialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);

src/main/java/org/qora/gui/SysTray.java

@@ -1,26 +1,22 @@
 package org.qora.gui;
 
 import java.awt.AWTException;
-import java.awt.BorderLayout;
 import java.awt.MenuItem;
 import java.awt.PopupMenu;
 import java.awt.SystemTray;
 import java.awt.TrayIcon;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
-import java.awt.Dimension;
+import java.net.MalformedURLException;
-import java.awt.Graphics;
+import java.net.URL;
-import java.awt.image.BufferedImage;
+
-import java.io.IOException;
-import java.io.InputStream;
-
-import javax.imageio.ImageIO;
-import javax.swing.JPanel;
 import javax.swing.SwingWorker;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.qora.controller.Controller;
+import org.qora.settings.Settings;
+import org.qora.utils.URLViewer;
 
 public class SysTray {
 
@@ -30,34 +26,13 @@ public class SysTray {
 	private TrayIcon trayIcon = null;
 	private PopupMenu popupMenu = null;
 
-	@SuppressWarnings("serial")
-	public static class SplashPanel extends JPanel {
-		private BufferedImage image;
-
-		public SplashPanel() {
-			try (InputStream in = ClassLoader.getSystemResourceAsStream("images/splash.png")) {
-				image = ImageIO.read(in);
-				this.setPreferredSize(new Dimension(image.getWidth(), image.getHeight()));
-				this.setLayout(new BorderLayout());
-			} catch (IOException ex) {
-				LOGGER.error(ex);
-			}
-		}
-
-		@Override
-		protected void paintComponent(Graphics g) {
-			super.paintComponent(g);
-			g.drawImage(image, 0, 0, null);
-		}
-	}
-
 	private SysTray() {
 		if (!SystemTray.isSupported())
 			return;
 
 		this.popupMenu = createPopupMenu();
 
-		this.trayIcon = new TrayIcon(GUI.loadImage("icons/icon32.png"), "qora-core", popupMenu);
+		this.trayIcon = new TrayIcon(Gui.loadImage("icons/icon32.png"), "qora-core", popupMenu);
 
 		this.trayIcon.setImageAutoSize(true);
 
@@ -84,6 +59,18 @@ public class SysTray {
 	private PopupMenu createPopupMenu() {
 		PopupMenu menu = new PopupMenu();
 
+		MenuItem openUi = new MenuItem("Open UI");
+		openUi.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				try {
+					URLViewer.openWebpage(new URL("http://localhost:" + Settings.getInstance().getUiPort()));
+				} catch (MalformedURLException e1) {
+					LOGGER.error(e1.getMessage(),e1);
+				}
+			}
+		});
+		menu.add(openUi);
+
 		MenuItem exit = new MenuItem("Exit");
 		exit.addActionListener(new ActionListener() {
 			public void actionPerformed(ActionEvent e) {

src/main/java/org/qora/settings/Settings.java

@@ -36,6 +36,13 @@ public class Settings {
 	// Settings, and other config files
 	private String userPath;
 
+	// Bundled UI related
+	private boolean uiEnabled = true;
+	private int uiPort = 9080;
+	private String[] uiWhitelist = new String[] {
+		"::1", "127.0.0.1"
+	};
+
 	// API-related
 	private boolean apiEnabled = true;
 	private int apiPort = 9085;
@@ -182,6 +189,18 @@ public class Settings {
 		return this.userPath;
 	}
 
+	public boolean isUiEnabled() {
+		return this.uiEnabled;
+	}
+
+	public int getUiPort() {
+		return this.uiPort;
+	}
+
+	public String[] getUiWhitelist() {
+		return this.uiWhitelist;
+	}
+
 	public boolean isApiEnabled() {
 		return this.apiEnabled;
 	}

src/main/java/org/qora/ui/UiService.java

@@ -0,0 +1,85 @@
+package org.qora.ui;
+
+import org.eclipse.jetty.rewrite.handler.RedirectPatternRule;
+import org.eclipse.jetty.rewrite.handler.RewriteHandler;
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.InetAccessHandler;
+import org.eclipse.jetty.servlet.DefaultServlet;
+import org.eclipse.jetty.servlet.FilterHolder;
+import org.eclipse.jetty.servlet.ServletContextHandler;
+import org.eclipse.jetty.servlet.ServletHolder;
+import org.eclipse.jetty.servlets.CrossOriginFilter;
+import org.qora.settings.Settings;
+
+public class UiService {
+
+	private final Server server;
+
+	public UiService() {
+		// Create bundled UI server
+		this.server = new Server(Settings.getInstance().getUiPort());
+
+		// IP address based access control
+		InetAccessHandler accessHandler = new InetAccessHandler();
+		for (String pattern : Settings.getInstance().getUiWhitelist()) {
+			accessHandler.include(pattern);
+		}
+		this.server.setHandler(accessHandler);
+
+		// URL rewriting
+		RewriteHandler rewriteHandler = new RewriteHandler();
+		accessHandler.setHandler(rewriteHandler);
+
+		// Context
+		ServletContextHandler context = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
+		context.setContextPath("/");
+		rewriteHandler.setHandler(context);
+
+		// Cross-origin resource sharing
+		FilterHolder corsFilterHolder = new FilterHolder(CrossOriginFilter.class);
+		corsFilterHolder.setInitParameter(CrossOriginFilter.ALLOWED_ORIGINS_PARAM, "*");
+		corsFilterHolder.setInitParameter(CrossOriginFilter.ALLOWED_METHODS_PARAM, "GET, POST, DELETE");
+		corsFilterHolder.setInitParameter(CrossOriginFilter.CHAIN_PREFLIGHT_PARAM, "false");
+		context.addFilter(corsFilterHolder, "/*", null);
+
+		// Bundled-UI static content servlet
+		ServletHolder uiServlet = new ServletHolder("bundled-ui", DefaultServlet.class);
+		ClassLoader loader = this.getClass().getClassLoader();
+		uiServlet.setInitParameter("resourceBase", loader.getResource("bundled-ui/").toString());
+		uiServlet.setInitParameter("dirAllowed", "true");
+		uiServlet.setInitParameter("pathInfoOnly", "true");
+		context.addServlet(uiServlet, "/*");
+
+		rewriteHandler.addRule(new RedirectPatternRule("", "/home.html")); // redirect to bundled UI start page
+	}
+
+	private static UiService instance;
+
+	public static UiService getInstance() {
+		if (instance == null) {
+			instance = new UiService();
+		}
+
+		return instance;
+	}
+
+	public void start() {
+		try {
+			// Start server
+			server.start();
+		} catch (Exception e) {
+			// Failed to start
+			throw new RuntimeException("Failed to start bundled UI", e);
+		}
+	}
+
+	public void stop() {
+		try {
+			// Stop server
+			server.stop();
+		} catch (Exception e) {
+			// Failed to stop
+		}
+	}
+
+}

src/main/java/org/qora/utils/URLViewer.java

@@ -0,0 +1,35 @@
+package org.qora.utils;
+
+import java.awt.Desktop;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+public class URLViewer {
+
+	private static final Logger LOGGER = LogManager.getLogger(URLViewer.class);
+
+	public static void openWebpage(URI uri) {
+		Desktop desktop = Desktop.isDesktopSupported() ? Desktop.getDesktop() : null;
+
+		if (desktop != null && desktop.isSupported(Desktop.Action.BROWSE)) {
+			try {
+				desktop.browse(uri);
+			} catch (Exception e) {
+				LOGGER.error(e.getMessage(), e);
+			}
+		}
+	}
+
+	public static void openWebpage(URL url) {
+		try {
+			openWebpage(url.toURI());
+		} catch (URISyntaxException e) {
+			LOGGER.error(e.getMessage(), e);
+		}
+	}
+
+}

src/main/resources/bundled-ui

@@ -0,0 +1 @@
+../../../../node-UI