Subtree merged in MemorizingTrustManager

3 files changed, 312 insertions, 0 deletions

diff --git a/libs/MemorizingTrustManager b/libs/MemorizingTrustManager
deleted file mode 160000
-Subproject fad835037adc1bd313bb56b694426fca4eb6734
diff --git a/libs/MemorizingTrustManager/example/src/de/duenndns/mtmexample/JULHandler.java b/libs/MemorizingTrustManager/example/src/de/duenndns/mtmexample/JULHandler.java
new file mode 100644
index 000000000..40f71f580
--- /dev/null
+++ b/libs/MemorizingTrustManager/example/src/de/duenndns/mtmexample/JULHandler.java
@@ -0,0 +1,169 @@
+package de.duenndns.mtmexample;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.io.StringBufferInputStream;
+import java.io.StringWriter;
+import java.util.logging.Formatter;
+import java.util.logging.Handler;
+import java.util.logging.Level;
+import java.util.logging.LogManager;
+import java.util.logging.LogRecord;
+import java.util.logging.Logger;
+
+import android.util.Log;
+
+/**
+ * A <code>java.util.logging</code> (JUL) Handler for Android.
+ * <p>
+ * If you want fine-grained control over MTM's logging, you can copy this
+ * class to your code base and call the static {@link #initialize()} method.
+ * </p>
+ * <p>
+ * This JUL Handler passes log messages sent to JUL to the Android log, while
+ * keeping the format and stack traces of optionally supplied Exceptions. It
+ * further allows to install a {@link DebugLogSettings} class via
+ * {@link #setDebugLogSettings(DebugLogSettings)} that determines whether JUL log messages of
+ * level {@link java.util.logging.Level#FINE} or lower are logged. This gives
+ * the application developer more control over the logged messages, while
+ * allowing a library developer to place debug log messages without risking to
+ * spam the Android log.
+ * </p>
+ * <p>
+ * If there are no {@code DebugLogSettings} configured, then all messages sent
+ * to JUL will be logged.
+ * </p>
+ * 
+ * @author Florian Schmaus
+ * 
+ */
+@SuppressWarnings("deprecation")
+public class JULHandler extends Handler {
+
+	/** Implement this interface to toggle debug logging.
+	 */
+	public interface DebugLogSettings {
+		public boolean isDebugLogEnabled();
+	}
+
+	private static final String CLASS_NAME = JULHandler.class.getName();
+
+	/**
+	 * The global LogManager configuration.
+	 * <p>
+	 * This configures:
+	 * <ul>
+	 * <li> JULHandler as the default handler for all log messages
+	 * <li> A default log level FINEST (300). Meaning that log messages of a level 300 or higher a
+	 * logged
+	 * </ul>
+	 * </p>
+	 */
+	private static final InputStream LOG_MANAGER_CONFIG = new StringBufferInputStream(
+// @formatter:off
+"handlers = " + CLASS_NAME + '\n' +
+".level = FINEST"
+);
+// @formatter:on
+
+	// Constants for Android vs. JUL debug level comparisons
+	private static final int FINE_INT = Level.FINE.intValue();
+	private static final int INFO_INT = Level.INFO.intValue();
+	private static final int WARN_INT = Level.WARNING.intValue();
+	private static final int SEVE_INT = Level.SEVERE.intValue();
+
+	private static final Logger LOGGER = Logger.getLogger(CLASS_NAME);
+
+	/** A formatter that creates output similar to Android's Log.x. */
+	private static final Formatter FORMATTER = new Formatter() {
+		@Override
+		public String format(LogRecord logRecord) {
+			Throwable thrown = logRecord.getThrown();
+			if (thrown != null) {
+				StringWriter sw = new StringWriter();
+				PrintWriter pw = new PrintWriter(sw, false);
+				pw.write(logRecord.getMessage() + ' ');
+				thrown.printStackTrace(pw);
+				pw.flush();
+				return sw.toString();
+			} else {
+				return logRecord.getMessage();
+			}
+		}
+	};
+
+	private static DebugLogSettings sDebugLogSettings;
+	private static boolean initialized = false;
+
+	public static void initialize() {
+		try {
+			LogManager.getLogManager().readConfiguration(LOG_MANAGER_CONFIG);
+			initialized = true;
+		} catch (IOException e) {
+			Log.e("JULHandler", "Can not initialize configuration", e);
+		}
+		if (initialized) LOGGER.info("Initialzied java.util.logging logger");
+	}
+
+	public static void setDebugLogSettings(DebugLogSettings debugLogSettings) {
+		if (!isInitialized()) initialize();
+		sDebugLogSettings = debugLogSettings;
+	}
+
+	public static boolean isInitialized() {
+		return initialized;
+	}
+
+	public JULHandler() {
+		setFormatter(FORMATTER);
+	}
+
+	@Override
+	public void close() {}
+
+	@Override
+	public void flush() {}
+
+	@Override
+	public boolean isLoggable(LogRecord record) {
+		final boolean debugLog = sDebugLogSettings == null ? true : sDebugLogSettings
+				.isDebugLogEnabled();
+
+		if (record.getLevel().intValue() <= FINE_INT) {
+			return debugLog;
+		}
+		return true;
+	}
+
+	/** JUL method that forwards log records to Android's LogCat. */
+	@Override
+	public void publish(LogRecord record) {
+		if (!isLoggable(record)) return;
+
+		final int priority = getAndroidPriority(record.getLevel());
+		final String tag = substringAfterLastDot(record.getSourceClassName());
+		final String msg = getFormatter().format(record);
+
+		Log.println(priority, tag, msg);
+	}
+
+	/** Helper to convert JUL verbosity levels to Android's Log. */
+	private static int getAndroidPriority(Level level) {
+		int value = level.intValue();
+		if (value >= SEVE_INT) {
+			return Log.ERROR;
+		} else if (value >= WARN_INT) {
+			return Log.WARN;
+		} else if (value >= INFO_INT) {
+			return Log.INFO;
+		} else {
+			return Log.DEBUG;
+		}
+	}
+
+	/** Helper to extract short class names. */
+	private static String substringAfterLastDot(String s) {
+		return s.substring(s.lastIndexOf('.') + 1).trim();
+	}
+}
diff --git a/libs/MemorizingTrustManager/example/src/de/duenndns/mtmexample/MTMExample.java b/libs/MemorizingTrustManager/example/src/de/duenndns/mtmexample/MTMExample.java
new file mode 100644
index 000000000..0d16ae82f
--- /dev/null
+++ b/libs/MemorizingTrustManager/example/src/de/duenndns/mtmexample/MTMExample.java
@@ -0,0 +1,143 @@
+package de.duenndns.mtmexample;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.os.Handler;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.Window;
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import java.net.URL;
+import java.security.KeyStoreException;
+import java.util.ArrayList;
+import java.util.Collections;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.X509TrustManager;
+
+import de.duenndns.ssl.MemorizingTrustManager;
+
+/**
+ * Example to demonstrate the use of MemorizingTrustManager on HTTPS
+ * sockets.
+ */
+public class MTMExample extends Activity implements OnClickListener
+{
+	MemorizingTrustManager mtm;
+	
+	TextView content;
+	HostnameVerifier defaultverifier;
+	EditText urlinput;
+	String text;
+	Handler hdlr;
+
+	/** Creates the Activity and registers a MemorizingTrustManager. */
+	@Override
+	public void onCreate(Bundle savedInstanceState)
+	{
+		super.onCreate(savedInstanceState);
+		JULHandler.initialize();
+		requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
+		setContentView(R.layout.mtmexample);
+
+
+		// set up gui elements
+		findViewById(R.id.connect).setOnClickListener(this);
+		content = (TextView)findViewById(R.id.content);
+		urlinput = (EditText)findViewById(R.id.url);
+
+		// register handler for background thread
+		hdlr = new Handler();
+
+		// Here, the MemorizingTrustManager is activated for HTTPS
+		try {
+			// set location of the keystore
+			MemorizingTrustManager.setKeyStoreFile("private", "sslkeys.bks");
+
+			// register MemorizingTrustManager for HTTPS
+			SSLContext sc = SSLContext.getInstance("TLS");
+			mtm = new MemorizingTrustManager(this);
+			sc.init(null, new X509TrustManager[] { mtm },
+					new java.security.SecureRandom());
+			HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
+			HttpsURLConnection.setDefaultHostnameVerifier(
+					mtm.wrapHostnameVerifier(HttpsURLConnection.getDefaultHostnameVerifier()));
+
+			// disable redirects to reduce possible confusion
+			HttpsURLConnection.setFollowRedirects(false);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	/** Updates the screen content from a background thread. */
+	void setText(final String s, final boolean progress) {
+		text = s;
+		hdlr.post(new Runnable() {
+			public void run() {
+				content.setText(s);
+				setProgressBarIndeterminateVisibility(progress);
+			}
+		});
+	}
+
+	/** Spawns a new thread connecting to the specified URL.
+	 * The result of the request is displayed on the screen.
+	 * @param urlString a HTTPS URL to connect to.
+	 */
+	void connect(final String urlString) {
+		new Thread() {
+			public void run() {
+				try {
+					URL u = new URL(urlString);
+					HttpsURLConnection c = (HttpsURLConnection)u.openConnection();
+					c.connect();
+					setText("" + c.getResponseCode() + " "
+							+ c.getResponseMessage(), false);
+					c.disconnect();
+				} catch (Exception e) {
+					setText(e.toString(), false);
+					e.printStackTrace();
+				}
+			}
+		}.start();
+	}
+
+	/** Reacts on the connect Button press. */
+	@Override
+	public void onClick(View view) {
+		String url = urlinput.getText().toString();
+		setText("Loading " + url, true);
+		setProgressBarIndeterminateVisibility(true);
+		connect(url);
+	}
+	
+	/** React on the "Manage Certificates" button press. */
+	public void onManage(View view) {
+		final ArrayList<String> aliases = Collections.list(mtm.getCertificates());
+		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.select_dialog_item, aliases);
+		new AlertDialog.Builder(this).setTitle("Tap Certificate to Delete")
+				.setNegativeButton(android.R.string.cancel, null)
+				.setAdapter(adapter, new DialogInterface.OnClickListener() {
+						@Override
+						public void onClick(DialogInterface dialog, int which) {
+							try {
+								String alias = aliases.get(which);
+								mtm.deleteCertificate(alias);
+								setText("Deleted " + alias, false);
+							} catch (KeyStoreException e) {
+								e.printStackTrace();
+								setText("Error: " + e.getLocalizedMessage(), false);
+							}
+						}
+					})
+				.create().show();
+	}
+}