Subtree merged in MemorizingTrustManager

libs/MemorizingTrustManager

@@ -1 +0,0 @@
-Subproject commit fad835037adc1bd313bb56b694426fca4eb67346

libs/MemorizingTrustManager/.gitignore

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+bin
+build
+gen
+local.properties
+example/bin
+example/gen
+tags
+.project
+.classpath
+.gradle
+.*.swp

libs/MemorizingTrustManager/AndroidManifest.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+	package="de.duenndns.ssl"
+	android:versionCode="1"
+	android:versionName="1.0">
+
+	<application android:label="MemorizingTrustManager">
+		<activity android:name="de.duenndns.ssl.MemorizingActivity"
+			android:theme="@android:style/Theme.Translucent.NoTitleBar" />
+	</application>
+</manifest>

libs/MemorizingTrustManager/LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT license.
+
+Copyright (c) 2010 Georg Lukas <georg@op-co.de>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

libs/MemorizingTrustManager/README.mdwn

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+# MemorizingTrustManager - Private Cloud Support for Your App
+
+MemorizingTrustManager (MTM) is a project to enable smarter and more secure use
+of SSL on Android. If it encounters an unknown SSL certificate, it asks the
+user whether to accept the certificate once, permanently or to abort the
+connection. This is a step in preventing man-in-the-middle attacks by blindly
+accepting any invalid, self-signed and/or expired certificates.
+
+MTM is aimed at providing seamless integration into your Android application,
+and the source code is available under the MIT license.
+
+## Screenshots
+
+![MemorizingTrustManager dialog](mtm-screenshot.png)
+![MemorizingTrustManager notification](mtm-notification.png)
+![MemorizingTrustManager server name dialog](mtm-servername.png)
+
+## Status
+
+MemorizingTrustManager is in production use in the
+[yaxim XMPP client](https://yaxim.org/). It is usable and easy to integrate,
+though it does not yet support hostname validation (the Java API makes it
+**hard** to integrate).
+
+## Integration
+
+MTM is easy to integrate into your own application. Follow these steps or have
+a look into the demo application in the `example` directory.
+
+### 1. Add MTM to your project
+
+Download the MTM source from GitHub, or add it as a
+[git submodule](http://git-scm.com/docs/git-submodule):
+
+	# plain download:
+	git clone https://github.com/ge0rg/MemorizingTrustManager
+	# submodule:
+	git submodule add https://github.com/ge0rg/MemorizingTrustManager
+
+Then add a library project dependency to `default.properties`:
+
+	android.library.reference.1=MemorizingTrustManager
+
+### 2. Add the MTM (popup) Activity to your manifest
+
+Edit your `AndroidManifest.xml` and add the MTM activity element right before the
+end of your closing `</application>` tag.
+
+			...
+			<activity android:name="de.duenndns.ssl.MemorizingActivity"
+				android:theme="@android:style/Theme.Translucent.NoTitleBar"
+				/>
+		</application>
+	</manifest>
+
+### 3. Hook MTM as the default TrustManager for your connection type
+
+Hooking MemorizingTrustmanager in HTTPS connections:
+
+	// register MemorizingTrustManager for HTTPS
+	SSLContext sc = SSLContext.getInstance("TLS");
+	MemorizingTrustManager mtm = new MemorizingTrustManager(this);
+	sc.init(null, new X509TrustManager[] { mtm }, new java.security.SecureRandom());
+	HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
+	HttpsURLConnection.setDefaultHostnameVerifier(
+		mtm.wrapHostnameVerifier(HttpsURLConnection.getDefaultHostnameVerifier()));
+
+
+Or, for aSmack you can use `setCustomSSLContext()`:
+
+	org.jivesoftware.smack.ConnectionConfiguration connectionConfiguration = …
+	SSLContext sc = SSLContext.getInstance("TLS");
+	MemorizingTrustManager mtm = new MemorizingTrustManager(this);
+	sc.init(null, new X509TrustManager[] { mtm }, new java.security.SecureRandom());
+	connectionConfiguration.setCustomSSLContext(sc);
+	connectionConfiguration.setHostnameVerifier(
+		mtm.wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier()));
+
+By default, MTM falls back to the system `TrustManager` before asking the user.
+If you do not trust the establishment, you can enforce a dialog on *every new
+connection* by supplying a `defaultTrustManager = null` parameter to the
+constructor:
+
+	MemorizingTrustManager mtm = new MemorizingTrustManager(this, null);
+
+If you want to use a different underlying `TrustManager`, like
+[AndroidPinning](https://github.com/moxie0/AndroidPinning), just supply that to
+MTM's constructor:
+
+	X509TrustManager pinning = new PinningTrustManager(SystemKeyStore.getInstance(),
+		new String[] {"f30012bbc18c231ac1a44b788e410ce754182513"}, 0);
+	MemorizingTrustManager mtm = new MemorizingTrustManager(this, pinning);
+
+### 4. Profit!
+
+### Logging
+
+MTM uses java.util.logging (JUL) for logging purposes. If you have not
+configured a Handler for JUL, then Android will by default log all
+messages of Level.INFO or higher. In order to get also the debug log
+messages (those with Level.FINE or lower) you need to configure a
+Handler accordingly. The MTM example project contains
+de.duenndns.mtmexample.JULHandler, which allows to enable and disable
+debug logging at runtime.
+
+## Alternatives
+
+MemorizingTrustManager is not the only one out there.
+
+[**NetCipher**](https://guardianproject.info/code/netcipher/) is an Android
+library made by the [Guardian Project](https://guardianproject.info/) to
+improve network security for mobile apps. It comes with a StrongTrustManager
+to do more thorough certificate checks, an independent Root CA store, and code
+to easily route your traffic through
+[the Tor network](https://www.torproject.org/) using [Orbot](https://guardianproject.info/apps/orbot/).
+
+[**AndroidPinning**](https://github.com/moxie0/AndroidPinning) is another Android
+library, written by [Moxie Marlinspike](http://www.thoughtcrime.org/) to allow
+pinning of server certificates, improving security against government-scale
+MitM attacks. Use this if your app is made to communicate with a specific
+server!
+
+## Contribute
+
+Please [help translating MTM into more languages](https://translations.launchpad.net/yaxim/master/+pots/mtm/)!

libs/MemorizingTrustManager/ant.properties

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+# This file is used to override default values used by the Ant build system.
+#
+# This file must be checked in Version Control Systems, as it is
+# integral to the build system of your project.
+
+# This file is only used by the Ant script.
+
+# You can use this to override default values such as
+#  'source.dir' for the location of your java source folder and
+#  'out.dir' for the location of your output folder.
+
+# You can also use it define how the release builds are signed by declaring
+# the following properties:
+#  'key.store' for the location of your keystore and
+#  'key.alias' for the name of the key to use.
+# The password will be asked during the build when you use the 'release' target.
+

libs/MemorizingTrustManager/build.gradle

@@ -0,0 +1,32 @@
+buildscript {
+	repositories {
+		mavenCentral()
+	}
+	dependencies {
+		classpath 'com.android.tools.build:gradle:0.7.+'
+	}
+}
+
+apply plugin: 'android-library'
+
+android {
+	compileSdkVersion 19
+	buildToolsVersion "19.1"
+	defaultConfig {
+        	minSdkVersion 7
+		targetSdkVersion 19
+	}
+
+	sourceSets {
+		main {
+			manifest.srcFile 'AndroidManifest.xml'
+			java.srcDirs = ['src']
+			resources.srcDirs = ['src']
+			aidl.srcDirs = ['src']
+			renderscript.srcDirs = ['src']
+			res.srcDirs = ['res']
+			assets.srcDirs = ['assets']
+		}
+	}
+
+}

libs/MemorizingTrustManager/build.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project name="MemorizingTrustManager" default="help">
+
+    <!-- The local.properties file is created and updated by the 'android' tool.
+         It contains the path to the SDK. It should *NOT* be checked into
+         Version Control Systems. -->
+    <property file="local.properties" />
+
+    <!-- The ant.properties file can be created by you. It is only edited by the
+         'android' tool to add properties to it.
+         This is the place to change some Ant specific build properties.
+         Here are some properties you may want to change/update:
+
+         source.dir
+             The name of the source directory. Default is 'src'.
+         out.dir
+             The name of the output directory. Default is 'bin'.
+
+         For other overridable properties, look at the beginning of the rules
+         files in the SDK, at tools/ant/build.xml
+
+         Properties related to the SDK location or the project target should
+         be updated using the 'android' tool with the 'update' action.
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems.
+
+         -->
+    <property file="ant.properties" />
+
+    <!-- if sdk.dir was not set from one of the property file, then
+         get it from the ANDROID_HOME env var.
+         This must be done before we load project.properties since
+         the proguard config can use sdk.dir -->
+    <property environment="env" />
+    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
+        <isset property="env.ANDROID_HOME" />
+    </condition>
+
+    <!-- The project.properties file is created and updated by the 'android'
+         tool, as well as ADT.
+
+         This contains project specific properties such as project target, and library
+         dependencies. Lower level build properties are stored in ant.properties
+         (or in .classpath for Eclipse projects).
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems. -->
+    <loadproperties srcFile="project.properties" />
+
+    <!-- quick check on sdk.dir -->
+    <fail
+            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
+            unless="sdk.dir"
+    />
+
+    <!--
+        Import per project custom build rules if present at the root of the project.
+        This is the place to put custom intermediary targets such as:
+            -pre-build
+            -pre-compile
+            -post-compile (This is typically used for code obfuscation.
+                           Compiled code location: ${out.classes.absolute.dir}
+                           If this is not done in place, override ${out.dex.input.absolute.dir})
+            -post-package
+            -post-build
+            -pre-clean
+    -->
+    <import file="custom_rules.xml" optional="true" />
+
+    <!-- Import the actual build file.
+
+         To customize existing targets, there are two options:
+         - Customize only one target:
+             - copy/paste the target into this file, *before* the
+               <import> task.
+             - customize it to your needs.
+         - Customize the whole content of build.xml
+             - copy/paste the content of the rules files (minus the top node)
+               into this file, replacing the <import> task.
+             - customize to your needs.
+
+         ***********************
+         ****** IMPORTANT ******
+         ***********************
+         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
+         in order to avoid having your file be overridden by tools such as "android update project"
+    -->
+    <!-- version-tag: 1 -->
+    <import file="${sdk.dir}/tools/ant/build.xml" />
+
+</project>

libs/MemorizingTrustManager/example/AndroidManifest.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="de.duenndns.mtmexample"
+      android:versionCode="1"
+      android:versionName="1.0">
+      
+    <uses-sdk
+        android:minSdkVersion="3"
+        android:targetSdkVersion="19" />
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application android:label="@string/app_name" android:icon="@android:drawable/ic_lock_lock">
+        <activity
+            android:name=".MTMExample"
+            android:configChanges="keyboardHidden|orientation|screenSize|screenLayout"
+            android:label="@string/app_name" >
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+	<!-- ADD THE FOLLOWING TO YOUR MANIFEST: -->
+	<activity android:name="de.duenndns.ssl.MemorizingActivity"
+        android:theme="@android:style/Theme.Translucent.NoTitleBar" />
+    </application>
+</manifest> 

libs/MemorizingTrustManager/example/ant.properties

@@ -0,0 +1,18 @@
+# This file is used to override default values used by the Ant build system.
+#
+# This file must be checked in Version Control Systems, as it is
+# integral to the build system of your project.
+
+# This file is only used by the Ant script.
+
+# You can use this to override default values such as
+#  'source.dir' for the location of your java source folder and
+#  'out.dir' for the location of your output folder.
+
+# You can also use it define how the release builds are signed by declaring
+# the following properties:
+#  'key.store' for the location of your keystore and
+#  'key.alias' for the name of the key to use.
+# The password will be asked during the build when you use the 'release' target.
+
+application.package=de.duenndns.mtmexample

libs/MemorizingTrustManager/example/build.gradle

@@ -0,0 +1,23 @@
+apply plugin: 'android'
+
+dependencies {
+	compile rootProject
+}
+
+android {
+	compileSdkVersion 19
+	buildToolsVersion "19.1"
+	defaultConfig {
+        	minSdkVersion 7
+		targetSdkVersion 19
+	}
+
+	sourceSets {
+		main {
+			manifest.srcFile 'AndroidManifest.xml'
+			java.srcDirs = ['src']
+			res.srcDirs = ['res']
+		}
+	}
+
+}

libs/MemorizingTrustManager/example/build.xml

@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project name="MTMExample" default="help">
+
+    <!-- The local.properties file is created and updated by the 'android' tool.
+         It contains the path to the SDK. It should *NOT* be checked into
+         Version Control Systems. -->
+    <property file="local.properties" />
+
+    <!-- The ant.properties file can be created by you. It is only edited by the
+         'android' tool to add properties to it.
+         This is the place to change some Ant specific build properties.
+         Here are some properties you may want to change/update:
+
+         source.dir
+             The name of the source directory. Default is 'src'.
+         out.dir
+             The name of the output directory. Default is 'bin'.
+
+         For other overridable properties, look at the beginning of the rules
+         files in the SDK, at tools/ant/build.xml
+
+         Properties related to the SDK location or the project target should
+         be updated using the 'android' tool with the 'update' action.
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems.
+
+         -->
+    <property file="ant.properties" />
+
+    <!-- if sdk.dir was not set from one of the property file, then
+         get it from the ANDROID_HOME env var.
+         This must be done before we load project.properties since
+         the proguard config can use sdk.dir -->
+    <property environment="env" />
+    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
+        <isset property="env.ANDROID_HOME" />
+    </condition>
+
+    <!-- The project.properties file is created and updated by the 'android'
+         tool, as well as ADT.
+
+         This contains project specific properties such as project target, and library
+         dependencies. Lower level build properties are stored in ant.properties
+         (or in .classpath for Eclipse projects).
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems. -->
+    <loadproperties srcFile="project.properties" />
+
+    <!-- quick check on sdk.dir -->
+    <fail
+            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
+            unless="sdk.dir"
+    />
+
+    <!--
+        Import per project custom build rules if present at the root of the project.
+        This is the place to put custom intermediary targets such as:
+            -pre-build
+            -pre-compile
+            -post-compile (This is typically used for code obfuscation.
+                           Compiled code location: ${out.classes.absolute.dir}
+                           If this is not done in place, override ${out.dex.input.absolute.dir})
+            -post-package
+            -post-build
+            -pre-clean
+    -->
+    <import file="custom_rules.xml" optional="true" />
+
+    <!-- Import the actual build file.
+
+         To customize existing targets, there are two options:
+         - Customize only one target:
+             - copy/paste the target into this file, *before* the
+               <import> task.
+             - customize it to your needs.
+         - Customize the whole content of build.xml
+             - copy/paste the content of the rules files (minus the top node)
+               into this file, replacing the <import> task.
+             - customize to your needs.
+
+         ***********************
+         ****** IMPORTANT ******
+         ***********************
+         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
+         in order to avoid having your file be overridden by tools such as "android update project"
+    -->
+    <!-- version-tag: 1 -->
+    <import file="${sdk.dir}/tools/ant/build.xml" />
+
+</project>

libs/MemorizingTrustManager/example/proguard-project.txt

@@ -0,0 +1,20 @@
+# To enable ProGuard in your project, edit project.properties
+# to define the proguard.config property as described in that file.
+#
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${sdk.dir}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the ProGuard
+# include property in project.properties.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

libs/MemorizingTrustManager/example/project.properties

@@ -0,0 +1,12 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system use,
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+
+android.library.reference.1=../
+# Project target.
+target=android-19

libs/MemorizingTrustManager/example/res/layout/mtmexample.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+	android:orientation="vertical"
+	android:layout_width="fill_parent"
+	android:layout_height="fill_parent" >
+	<EditText
+		android:id="@+id/url" 
+		android:layout_width="fill_parent" 
+		android:layout_height="wrap_content" 
+		android:hint="HTTPS address"
+		android:text="https://op-co.de/mtm/"
+		android:singleLine="true"
+		/>
+	<Button
+		android:id="@+id/connect" 
+		android:layout_width="fill_parent" 
+		android:layout_height="wrap_content" 
+		android:text="Connect"
+		/>
+	<TextView
+		android:id="@+id/content" 
+		android:layout_width="fill_parent" 
+		android:layout_height="wrap_content" 
+		android:layout_weight="1"
+		android:text="Please enter a HTTPS URL and press 'Connect'!"
+		android:textSize="11pt"
+		/>
+	<Button
+		android:id="@+id/manage" 
+		android:layout_width="fill_parent" 
+		android:layout_height="wrap_content" 
+		android:text="Clean up Certificates"
+		android:onClick="onManage"
+		/>
+</LinearLayout>
+

libs/MemorizingTrustManager/example/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">MemorizingTrustManager Example</string>
+</resources>

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();
+	}
+}

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();
+	}
+}

libs/MemorizingTrustManager/proguard-project.txt

@@ -0,0 +1,20 @@
+# To enable ProGuard in your project, edit project.properties
+# to define the proguard.config property as described in that file.
+#
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in ${sdk.dir}/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the ProGuard
+# include property in project.properties.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

libs/MemorizingTrustManager/project.properties

@@ -0,0 +1,12 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system use,
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+
+android.library=true
+# Project target.
+target=android-19

libs/MemorizingTrustManager/res/values-de/strings.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">Unbekanntes Zertifikat akzeptieren?</string>
+    <string name="mtm_trust_anchor">Das Serverzertifikat stammt nicht von einer bekannten Ausstellungsstelle (CA).</string>
+    <string name="mtm_cert_expired">The server certificate is expired.</string>
+    <string name="mtm_accept_servername">Abweichenden Servernamen akzeptieren?</string>
+    <string name="mtm_hostname_mismatch">Der Server konnte sich nicht als \"%s\" ausweisen. Das Zertifikat gilt nur für:</string>
+
+    <string name="mtm_connect_anyway">Verbindung trotzdem aufbauen?</string>
+    <string name="mtm_cert_details">Zertifikat-Details:</string>
+
+    <string name="mtm_decision_always">Immer</string>
+    <string name="mtm_decision_once">Einmal</string>
+    <string name="mtm_decision_abort">Abbrechen</string>
+
+    <string name="mtm_notification">Zertifikatsprüfung</string>
+</resources>

libs/MemorizingTrustManager/res/values-es/strings.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">¿Aceptar certicado desconocido?</string>
+    <string name="mtm_trust_anchor">El certificado del servidor no está firmado por una Autoridad Conocida (CA).</string>
+    <string name="mtm_cert_expired">The server certificate is expired.</string>
+    <string name="mtm_accept_servername">¿Aceptar discordancia en nombre del servidor?</string>
+    <string name="mtm_hostname_mismatch">El servidor no ha podido autenticarte como \"%s\". El certificado es solo válido para:</string>
+
+    <string name="mtm_connect_anyway">¿Quieres conectar de todas formas?</string>
+    <string name="mtm_cert_details">Detalle del certificado:</string>
+
+    <string name="mtm_decision_always">Siempre</string>
+    <string name="mtm_decision_once">Una vez</string>
+    <string name="mtm_decision_abort">Abortar</string>
+
+    <string name="mtm_notification">Verificación de Certificado</string>
+</resources>

libs/MemorizingTrustManager/res/values-eu/strings.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">Ziurtagiri ezezaguna onartu?</string>
+    <string name="mtm_trust_anchor">Zerbitzariaren ziurtagiria ez dago Ziurtagiri-emaile Autoritate ezagun batez sinatuta.</string>
+    <string name="mtm_cert_expired">Zerbitzariaren ziurtagiria iraungi da.</string>
+    <string name="mtm_accept_servername">Zerbitzariaren izeneko desadostasuna onartu?</string>
+    <string name="mtm_hostname_mismatch">Zerbitzaria ezin izan da \&quot;%s\&quot; bezala autentifikatu. Ziurtagiria soilik honetarako baliagarria da:</string>
+
+    <string name="mtm_connect_anyway">Konektatu hala ere?</string>
+    <string name="mtm_cert_details">Ziurtagiriaren xehetasunak:</string>
+
+    <string name="mtm_decision_always">Beti</string>
+    <string name="mtm_decision_once">Behin</string>
+    <string name="mtm_decision_abort">Utzi</string>
+
+    <string name="mtm_notification">Ziurtagiriaren egiaztapena</string>
+</resources>

libs/MemorizingTrustManager/res/values-fi/strings.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">Hyväksytäänkö palvelimen antama tuntematon varmenne?</string>
+    <string name="mtm_trust_anchor">Palvelimen varmenne ei ole tunnetun varmentajan (CA) allekirjoittama.</string>
+    <string name="mtm_accept_servername">Sallitaanko palvelimen nimi, joka ei vastaa varmeenteessa olevaa nimeä?</string>
+    <string name="mtm_hostname_mismatch">Palvelimella ei ole varmennetta nimelle \"%s\". Varmenteen sisältämät nimet:</string>
+
+    <string name="mtm_connect_anyway">Haluatko jatkaa yhteyden muodostamista?</string>
+    <string name="mtm_cert_details">Sertifikaatin tiedot:</string>
+
+    <string name="mtm_decision_always">Aina</string>
+    <string name="mtm_decision_once">Kerran</string>
+    <string name="mtm_decision_abort">Keskeytä</string>
+
+    <string name="mtm_notification">Varmenteen tarkistus</string>
+</resources>

libs/MemorizingTrustManager/res/values-fr/strings.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">Accept Unknown Certificate?</string>
+    <string name="mtm_trust_anchor">Le certificat du serveur n’est pas signé par une Autorité de Certification reconnue.</string>
+    <string name="mtm_accept_servername">Accept Mismatching Server Name?</string>
+    <string name="mtm_hostname_mismatch">Server could not authenticate as \"%s\". The certificate is only valid for:</string>
+
+    <string name="mtm_connect_anyway">Do you want to connect anyway?</string>
+    <string name="mtm_cert_details">Détails du certificat :</string>
+
+    <string name="mtm_decision_always">Toujours</string>
+    <string name="mtm_decision_once">Une seule fois</string>
+    <string name="mtm_decision_abort">Annuler</string>
+
+    <string name="mtm_notification">Certificate Verification</string>
+</resources>

libs/MemorizingTrustManager/res/values-no/strings.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">Godta ukjent sertifikat?</string>
+    <string name="mtm_trust_anchor">Sertifikatet er ikke utstilt av en kjent utstiller (CA).</string>
+    <string name="mtm_accept_servername">Godta feil servernavn?</string>
+    <string name="mtm_hostname_mismatch">Serveren heter ikke \"%s\". Sertifikatet gjelder bare for: </string>
+
+    <string name="mtm_connect_anyway">Vil du bruke serveren likevel?</string>
+    <string name="mtm_cert_details">Sertifikatdetaljer:</string>
+
+    <string name="mtm_decision_always">Alltid</string>
+    <string name="mtm_decision_once">En gang</string>
+    <string name="mtm_decision_abort">Avbryt</string>
+
+    <string name="mtm_notification">Sertifikat-sjekk</string>
+</resources>

libs/MemorizingTrustManager/res/values/strings.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="mtm_accept_cert">Accept Unknown Certificate?</string>
+    <string name="mtm_trust_anchor">The server certificate is not signed by a known Certificate Authority.</string>
+    <string name="mtm_cert_expired">The server certificate is expired.</string>
+    <string name="mtm_accept_servername">Accept Mismatching Server Name?</string>
+    <string name="mtm_hostname_mismatch">Server could not authenticate as \&quot;%s\&quot;. The certificate is only valid for:</string>
+
+    <string name="mtm_connect_anyway">Do you want to connect anyway?</string>
+    <string name="mtm_cert_details">Certificate details:</string>
+
+    <string name="mtm_decision_always">Always</string>
+    <string name="mtm_decision_once">Once</string>
+    <string name="mtm_decision_abort">Abort</string>
+
+    <string name="mtm_notification">Certificate Verification</string>
+</resources>

libs/MemorizingTrustManager/settings.gradle

@@ -0,0 +1 @@
+include ':example'

libs/MemorizingTrustManager/src/de/duenndns/ssl/MTMDecision.java

@@ -0,0 +1,33 @@
+/* MemorizingTrustManager - a TrustManager which asks the user about invalid
+ *  certificates and memorizes their decision.
+ *
+ * Copyright (c) 2010 Georg Lukas <georg@op-co.de>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package de.duenndns.ssl;
+
+class MTMDecision {
+	public final static int DECISION_INVALID	= 0;
+	public final static int DECISION_ABORT		= 1;
+	public final static int DECISION_ONCE		= 2;
+	public final static int DECISION_ALWAYS	= 3;
+
+	int state = DECISION_INVALID;
+}

libs/MemorizingTrustManager/src/de/duenndns/ssl/MemorizingActivity.java

@@ -0,0 +1,103 @@
+/* MemorizingTrustManager - a TrustManager which asks the user about invalid
+ *  certificates and memorizes their decision.
+ *
+ * Copyright (c) 2010 Georg Lukas <georg@op-co.de>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package de.duenndns.ssl;
+
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.DialogInterface.*;
+import android.content.Intent;
+import android.os.Bundle;
+
+public class MemorizingActivity extends Activity
+		implements OnClickListener,OnCancelListener {
+
+	private final static Logger LOGGER = Logger.getLogger(MemorizingActivity.class.getName());
+
+	int decisionId;
+
+	AlertDialog dialog;
+	
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		LOGGER.log(Level.FINE, "onCreate");
+		super.onCreate(savedInstanceState);
+	}
+
+	@Override
+	public void onResume() {
+		super.onResume();
+		Intent i = getIntent();
+		decisionId = i.getIntExtra(MemorizingTrustManager.DECISION_INTENT_ID, MTMDecision.DECISION_INVALID);
+		int titleId = i.getIntExtra(MemorizingTrustManager.DECISION_TITLE_ID, R.string.mtm_accept_cert);
+		String cert = i.getStringExtra(MemorizingTrustManager.DECISION_INTENT_CERT);
+		LOGGER.log(Level.FINE, "onResume with " + i.getExtras() + " decId=" + decisionId + " data: " + i.getData());
+		dialog = new AlertDialog.Builder(this).setTitle(titleId)
+			.setMessage(cert)
+			.setPositiveButton(R.string.mtm_decision_always, this)
+			.setNeutralButton(R.string.mtm_decision_once, this)
+			.setNegativeButton(R.string.mtm_decision_abort, this)
+			.setOnCancelListener(this)
+			.create();
+		dialog.show();
+	}
+
+	@Override
+	protected void onPause() {
+		if (dialog.isShowing())
+			dialog.dismiss();
+		super.onPause();
+	}
+
+	void sendDecision(int decision) {
+		LOGGER.log(Level.FINE, "Sending decision: " + decision);
+		MemorizingTrustManager.interactResult(decisionId, decision);
+		finish();
+	}
+
+	// react on AlertDialog button press
+	public void onClick(DialogInterface dialog, int btnId) {
+		int decision;
+		dialog.dismiss();
+		switch (btnId) {
+		case DialogInterface.BUTTON_POSITIVE:
+			decision = MTMDecision.DECISION_ALWAYS;
+			break;
+		case DialogInterface.BUTTON_NEUTRAL:
+			decision = MTMDecision.DECISION_ONCE;
+			break;
+		default:
+			decision = MTMDecision.DECISION_ABORT;
+		}
+		sendDecision(decision);
+	}
+
+	public void onCancel(DialogInterface dialog) {
+		sendDecision(MTMDecision.DECISION_ABORT);
+	}
+}

libs/MemorizingTrustManager/src/de/duenndns/ssl/MemorizingTrustManager.java

@@ -0,0 +1,735 @@
+/* MemorizingTrustManager - a TrustManager which asks the user about invalid
+ *  certificates and memorizes their decision.
+ *
+ * Copyright (c) 2010 Georg Lukas <georg@op-co.de>
+ *
+ * MemorizingTrustManager.java contains the actual trust manager and interface
+ * code to create a MemorizingActivity and obtain the results.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package de.duenndns.ssl;
+
+import android.app.Activity;
+import android.app.Application;
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.Service;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.util.SparseArray;
+import android.os.Handler;
+
+import java.io.File;
+import java.io.IOException;
+import java.security.cert.*;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.MessageDigest;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.text.SimpleDateFormat;
+import java.util.Collection;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.Locale;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.SSLSession;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
+
+/**
+ * A X509 trust manager implementation which asks the user about invalid
+ * certificates and memorizes their decision.
+ * <p>
+ * The certificate validity is checked using the system default X509
+ * TrustManager, creating a query Dialog if the check fails.
+ * <p>
+ * <b>WARNING:</b> This only works if a dedicated thread is used for
+ * opening sockets!
+ */
+public class MemorizingTrustManager implements X509TrustManager {
+	final static String DECISION_INTENT = "de.duenndns.ssl.DECISION";
+	final static String DECISION_INTENT_ID     = DECISION_INTENT + ".decisionId";
+	final static String DECISION_INTENT_CERT   = DECISION_INTENT + ".cert";
+	final static String DECISION_INTENT_CHOICE = DECISION_INTENT + ".decisionChoice";
+
+	private final static Logger LOGGER = Logger.getLogger(MemorizingTrustManager.class.getName());
+	final static String DECISION_TITLE_ID      = DECISION_INTENT + ".titleId";
+	private final static int NOTIFICATION_ID = 100509;
+
+	final static String NO_TRUST_ANCHOR = "Trust anchor for certification path not found.";
+	
+	static String KEYSTORE_DIR = "KeyStore";
+	static String KEYSTORE_FILE = "KeyStore.bks";
+
+	Context master;
+	Activity foregroundAct;
+	NotificationManager notificationManager;
+	private static int decisionId = 0;
+	private static SparseArray<MTMDecision> openDecisions = new SparseArray<MTMDecision>();
+
+	Handler masterHandler;
+	private File keyStoreFile;
+	private KeyStore appKeyStore;
+	private X509TrustManager defaultTrustManager;
+	private X509TrustManager appTrustManager;
+
+	/** Creates an instance of the MemorizingTrustManager class that falls back to a custom TrustManager.
+	 *
+	 * You need to supply the application context. This has to be one of:
+	 *    - Application
+	 *    - Activity
+	 *    - Service
+	 *
+	 * The context is used for file management, to display the dialog /
+	 * notification and for obtaining translated strings.
+	 *
+	 * @param m Context for the application.
+	 * @param defaultTrustManager Delegate trust management to this TM. If null, the user must accept every certificate.
+	 */
+	public MemorizingTrustManager(Context m, X509TrustManager defaultTrustManager) {
+		init(m);
+		this.appTrustManager = getTrustManager(appKeyStore);
+		this.defaultTrustManager = defaultTrustManager;
+	}
+
+	/** Creates an instance of the MemorizingTrustManager class using the system X509TrustManager.
+	 *
+	 * You need to supply the application context. This has to be one of:
+	 *    - Application
+	 *    - Activity
+	 *    - Service
+	 *
+	 * The context is used for file management, to display the dialog /
+	 * notification and for obtaining translated strings.
+	 *
+	 * @param m Context for the application.
+	 */
+	public MemorizingTrustManager(Context m) {
+		init(m);
+		this.appTrustManager = getTrustManager(appKeyStore);
+		this.defaultTrustManager = getTrustManager(null);
+	}
+
+	void init(Context m) {
+		master = m;
+		masterHandler = new Handler(m.getMainLooper());
+		notificationManager = (NotificationManager)master.getSystemService(Context.NOTIFICATION_SERVICE);
+
+		Application app;
+		if (m instanceof Application) {
+			app = (Application)m;
+		} else if (m instanceof Service) {
+			app = ((Service)m).getApplication();
+		} else if (m instanceof Activity) {
+			app = ((Activity)m).getApplication();
+		} else throw new ClassCastException("MemorizingTrustManager context must be either Activity or Service!");
+
+		File dir = app.getDir(KEYSTORE_DIR, Context.MODE_PRIVATE);
+		keyStoreFile = new File(dir + File.separator + KEYSTORE_FILE);
+
+		appKeyStore = loadAppKeyStore();
+	}
+
+	
+	/**
+	 * Returns a X509TrustManager list containing a new instance of
+	 * TrustManagerFactory.
+	 *
+	 * This function is meant for convenience only. You can use it
+	 * as follows to integrate TrustManagerFactory for HTTPS sockets:
+	 *
+	 * <pre>
+	 *     SSLContext sc = SSLContext.getInstance("TLS");
+	 *     sc.init(null, MemorizingTrustManager.getInstanceList(this),
+	 *         new java.security.SecureRandom());
+	 *     HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
+	 * </pre>
+	 * @param c Activity or Service to show the Dialog / Notification
+	 */
+	public static X509TrustManager[] getInstanceList(Context c) {
+		return new X509TrustManager[] { new MemorizingTrustManager(c) };
+	}
+
+	/**
+	 * Binds an Activity to the MTM for displaying the query dialog.
+	 *
+	 * This is useful if your connection is run from a service that is
+	 * triggered by user interaction -- in such cases the activity is
+	 * visible and the user tends to ignore the service notification.
+	 *
+	 * You should never have a hidden activity bound to MTM! Use this
+	 * function in onResume() and @see unbindDisplayActivity in onPause().
+	 *
+	 * @param act Activity to be bound
+	 */
+	public void bindDisplayActivity(Activity act) {
+		foregroundAct = act;
+	}
+
+	/**
+	 * Removes an Activity from the MTM display stack.
+	 *
+	 * Always call this function when the Activity added with
+	 * {@link #bindDisplayActivity(Activity)} is hidden.
+	 *
+	 * @param act Activity to be unbound
+	 */
+	public void unbindDisplayActivity(Activity act) {
+		// do not remove if it was overridden by a different activity
+		if (foregroundAct == act)
+			foregroundAct = null;
+	}
+
+	/**
+	 * Changes the path for the KeyStore file.
+	 *
+	 * The actual filename relative to the app's directory will be
+	 * <code>app_<i>dirname</i>/<i>filename</i></code>.
+	 *
+	 * @param dirname directory to store the KeyStore.
+	 * @param filename file name for the KeyStore.
+	 */
+	public static void setKeyStoreFile(String dirname, String filename) {
+		KEYSTORE_DIR = dirname;
+		KEYSTORE_FILE = filename;
+	}
+
+	/**
+	 * Get a list of all certificate aliases stored in MTM.
+	 *
+	 * @return an {@link Enumeration} of all certificates
+	 */
+	public Enumeration<String> getCertificates() {
+		try {
+			return appKeyStore.aliases();
+		} catch (KeyStoreException e) {
+			// this should never happen, however...
+			throw new RuntimeException(e);
+		}
+	}
+
+	/**
+	 * Get a certificate for a given alias.
+	 *
+	 * @param alias the certificate's alias as returned by {@link #getCertificates()}.
+	 *
+	 * @return the certificate associated with the alias or <tt>null</tt> if none found.
+	 */
+	public Certificate getCertificate(String alias) {
+		try {
+			return appKeyStore.getCertificate(alias);
+		} catch (KeyStoreException e) {
+			// this should never happen, however...
+			throw new RuntimeException(e);
+		}
+	}
+
+	/**
+	 * Removes the given certificate from MTMs key store.
+	 *
+	 * <p>
+	 * <b>WARNING</b>: this does not immediately invalidate the certificate. It is
+	 * well possible that (a) data is transmitted over still existing connections or
+	 * (b) new connections are created using TLS renegotiation, without a new cert
+	 * check.
+	 * </p>
+	 * @param alias the certificate's alias as returned by {@link #getCertificates()}.
+	 *
+	 * @throws KeyStoreException if the certificate could not be deleted.
+	 */
+	public void deleteCertificate(String alias) throws KeyStoreException {
+		appKeyStore.deleteEntry(alias);
+		keyStoreUpdated();
+	}
+
+	/**
+	 * Creates a new hostname verifier supporting user interaction.
+	 *
+	 * <p>This method creates a new {@link HostnameVerifier} that is bound to
+	 * the given instance of {@link MemorizingTrustManager}, and leverages an
+	 * existing {@link HostnameVerifier}. The returned verifier performs the
+	 * following steps, returning as soon as one of them succeeds:
+	 *  </p>
+	 *  <ol>
+	 *  <li>Success, if the wrapped defaultVerifier accepts the certificate.</li>
+	 *  <li>Success, if the server certificate is stored in the keystore under the given hostname.</li>
+	 *  <li>Ask the user and return accordingly.</li>
+	 *  <li>Failure on exception.</li>
+	 *  </ol>
+	 *
+	 * @param defaultVerifier the {@link HostnameVerifier} that should perform the actual check
+	 * @return a new hostname verifier using the MTM's key store
+	 *
+	 * @throws IllegalArgumentException if the defaultVerifier parameter is null
+	 */
+	public HostnameVerifier wrapHostnameVerifier(final HostnameVerifier defaultVerifier) {
+		if (defaultVerifier == null)
+			throw new IllegalArgumentException("The default verifier may not be null");
+		
+		return new MemorizingHostnameVerifier(defaultVerifier);
+	}
+	
+	public HostnameVerifier wrapHostnameVerifierNonInteractive(final HostnameVerifier defaultVerifier) {
+		if (defaultVerifier == null)
+			throw new IllegalArgumentException("The default verifier may not be null");
+		
+		return new NonInteractiveMemorizingHostnameVerifier(defaultVerifier);
+	}
+	
+	X509TrustManager getTrustManager(KeyStore ks) {
+		try {
+			TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
+			tmf.init(ks);
+			for (TrustManager t : tmf.getTrustManagers()) {
+				if (t instanceof X509TrustManager) {
+					return (X509TrustManager)t;
+				}
+			}
+		} catch (Exception e) {
+			// Here, we are covering up errors. It might be more useful
+			// however to throw them out of the constructor so the
+			// embedding app knows something went wrong.
+			LOGGER.log(Level.SEVERE, "getTrustManager(" + ks + ")", e);
+		}
+		return null;
+	}
+
+	KeyStore loadAppKeyStore() {
+		KeyStore ks;
+		try {
+			ks = KeyStore.getInstance(KeyStore.getDefaultType());
+		} catch (KeyStoreException e) {
+			LOGGER.log(Level.SEVERE, "getAppKeyStore()", e);
+			return null;
+		}
+		try {
+			ks.load(null, null);
+			ks.load(new java.io.FileInputStream(keyStoreFile), "MTM".toCharArray());
+		} catch (java.io.FileNotFoundException e) {
+			LOGGER.log(Level.INFO, "getAppKeyStore(" + keyStoreFile + ") - file does not exist");
+		} catch (Exception e) {
+			LOGGER.log(Level.SEVERE, "getAppKeyStore(" + keyStoreFile + ")", e);
+		}
+		return ks;
+	}
+
+	void storeCert(String alias, Certificate cert) {
+		try {
+			appKeyStore.setCertificateEntry(alias, cert);
+		} catch (KeyStoreException e) {
+			LOGGER.log(Level.SEVERE, "storeCert(" + cert + ")", e);
+			return;
+		}		
+		keyStoreUpdated();
+	}
+	
+	void storeCert(X509Certificate cert) {
+		storeCert(cert.getSubjectDN().toString(), cert);
+	}
+
+	void keyStoreUpdated() {
+		// reload appTrustManager
+		appTrustManager = getTrustManager(appKeyStore);
+
+		// store KeyStore to file
+		java.io.FileOutputStream fos = null;
+		try {
+			fos = new java.io.FileOutputStream(keyStoreFile);
+			appKeyStore.store(fos, "MTM".toCharArray());
+		} catch (Exception e) {
+			LOGGER.log(Level.SEVERE, "storeCert(" + keyStoreFile + ")", e);
+		} finally {
+			if (fos != null) {
+				try {
+					fos.close();
+				} catch (IOException e) {
+					LOGGER.log(Level.SEVERE, "storeCert(" + keyStoreFile + ")", e);
+				}
+			}
+		}
+	}
+
+	// if the certificate is stored in the app key store, it is considered "known"
+	private boolean isCertKnown(X509Certificate cert) {
+		try {
+			return appKeyStore.getCertificateAlias(cert) != null;
+		} catch (KeyStoreException e) {
+			return false;
+		}
+	}
+
+	private boolean isExpiredException(Throwable e) {
+		do {
+			if (e instanceof CertificateExpiredException)
+				return true;
+			e = e.getCause();
+		} while (e != null);
+		return false;
+	}
+
+	public void checkCertTrusted(X509Certificate[] chain, String authType, boolean isServer, boolean interactive)
+		throws CertificateException
+	{
+		LOGGER.log(Level.FINE, "checkCertTrusted(" + chain + ", " + authType + ", " + isServer + ")");
+		try {
+			LOGGER.log(Level.FINE, "checkCertTrusted: trying appTrustManager");
+			if (isServer)
+				appTrustManager.checkServerTrusted(chain, authType);
+			else
+				appTrustManager.checkClientTrusted(chain, authType);
+		} catch (CertificateException ae) {
+			LOGGER.log(Level.FINER, "checkCertTrusted: appTrustManager failed", ae);
+			// if the cert is stored in our appTrustManager, we ignore expiredness
+			if (isExpiredException(ae)) {
+				LOGGER.log(Level.INFO, "checkCertTrusted: accepting expired certificate from keystore");
+				return;
+			}
+			if (isCertKnown(chain[0])) {
+				LOGGER.log(Level.INFO, "checkCertTrusted: accepting cert already stored in keystore");
+				return;
+			}
+			try {
+				if (defaultTrustManager == null)
+					throw ae;
+				LOGGER.log(Level.FINE, "checkCertTrusted: trying defaultTrustManager");
+				if (isServer)
+					defaultTrustManager.checkServerTrusted(chain, authType);
+				else
+					defaultTrustManager.checkClientTrusted(chain, authType);
+			} catch (CertificateException e) {
+				e.printStackTrace();
+				if (interactive) {
+					interactCert(chain, authType, e);
+				} else {
+					throw e;
+				}
+			}
+		}
+	}
+
+	public void checkClientTrusted(X509Certificate[] chain, String authType)
+		throws CertificateException
+	{
+		checkCertTrusted(chain, authType, false,true);
+	}
+
+	public void checkServerTrusted(X509Certificate[] chain, String authType)
+		throws CertificateException
+	{
+		checkCertTrusted(chain, authType, true,true);
+	}
+
+	public X509Certificate[] getAcceptedIssuers()
+	{
+		LOGGER.log(Level.FINE, "getAcceptedIssuers()");
+		return defaultTrustManager.getAcceptedIssuers();
+	}
+
+	private int createDecisionId(MTMDecision d) {
+		int myId;
+		synchronized(openDecisions) {
+			myId = decisionId;
+			openDecisions.put(myId, d);
+			decisionId += 1;
+		}
+		return myId;
+	}
+
+	private static String hexString(byte[] data) {
+		StringBuffer si = new StringBuffer();
+		for (int i = 0; i < data.length; i++) {
+			si.append(String.format("%02x", data[i]));
+			if (i < data.length - 1)
+				si.append(":");
+		}
+		return si.toString();
+	}
+
+	private static String certHash(final X509Certificate cert, String digest) {
+		try {
+			MessageDigest md = MessageDigest.getInstance(digest);
+			md.update(cert.getEncoded());
+			return hexString(md.digest());
+		} catch (java.security.cert.CertificateEncodingException e) {
+			return e.getMessage();
+		} catch (java.security.NoSuchAlgorithmException e) {
+			return e.getMessage();
+		}
+	}
+
+	private void certDetails(StringBuffer si, X509Certificate c) {
+		SimpleDateFormat validityDateFormater = new SimpleDateFormat("yyyy-MM-dd");
+		si.append("\n");
+		si.append(c.getSubjectDN().toString());
+		si.append("\n");
+		si.append(validityDateFormater.format(c.getNotBefore()));
+		si.append(" - ");
+		si.append(validityDateFormater.format(c.getNotAfter()));
+		si.append("\nSHA-256: ");
+		si.append(certHash(c, "SHA-256"));
+		si.append("\nSHA-1: ");
+		si.append(certHash(c, "SHA-1"));
+		si.append("\nSigned by: ");
+		si.append(c.getIssuerDN().toString());
+		si.append("\n");
+	}
+	
+	private String certChainMessage(final X509Certificate[] chain, CertificateException cause) {
+		Throwable e = cause;
+		LOGGER.log(Level.FINE, "certChainMessage for " + e);
+		StringBuffer si = new StringBuffer();
+		if (e.getCause() != null) {
+			e = e.getCause();
+			// HACK: there is no sane way to check if the error is a "trust anchor
+			// not found", so we use string comparison.
+			if (NO_TRUST_ANCHOR.equals(e.getMessage())) {
+				si.append(master.getString(R.string.mtm_trust_anchor));
+			} else
+				si.append(e.getLocalizedMessage());
+			si.append("\n");
+		}
+		si.append("\n");
+		si.append(master.getString(R.string.mtm_connect_anyway));
+		si.append("\n\n");
+		si.append(master.getString(R.string.mtm_cert_details));
+		for (X509Certificate c : chain) {
+			certDetails(si, c);
+		}
+		return si.toString();
+	}
+
+	private String hostNameMessage(X509Certificate cert, String hostname) {
+		StringBuffer si = new StringBuffer();
+
+		si.append(master.getString(R.string.mtm_hostname_mismatch, hostname));
+		si.append("\n\n");
+		try {
+			Collection<List<?>> sans = cert.getSubjectAlternativeNames();
+			if (sans == null) {
+				si.append(cert.getSubjectDN());
+				si.append("\n");
+			} else for (List<?> altName : sans) {
+				Object name = altName.get(1);
+				if (name instanceof String) {
+					si.append("[");
+					si.append((Integer)altName.get(0));
+					si.append("] ");
+					si.append(name);
+					si.append("\n");
+				}
+			}
+		} catch (CertificateParsingException e) {
+			e.printStackTrace();
+			si.append("<Parsing error: ");
+			si.append(e.getLocalizedMessage());
+			si.append(">\n");
+		}
+		si.append("\n");
+		si.append(master.getString(R.string.mtm_connect_anyway));
+		si.append("\n\n");
+		si.append(master.getString(R.string.mtm_cert_details));
+		certDetails(si, cert);
+		return si.toString();
+	}
+
+	// We can use Notification.Builder once MTM's minSDK is >= 11
+	@SuppressWarnings("deprecation")
+	void startActivityNotification(Intent intent, int decisionId, String certName) {
+		Notification n = new Notification(android.R.drawable.ic_lock_lock,
+				master.getString(R.string.mtm_notification),
+				System.currentTimeMillis());
+		PendingIntent call = PendingIntent.getActivity(master, 0, intent, 0);
+		n.setLatestEventInfo(master.getApplicationContext(),
+				master.getString(R.string.mtm_notification),
+				certName, call);
+		n.flags |= Notification.FLAG_AUTO_CANCEL;
+
+		notificationManager.notify(NOTIFICATION_ID + decisionId, n);
+	}
+
+	/**
+	 * Returns the top-most entry of the activity stack.
+	 *
+	 * @return the Context of the currently bound UI or the master context if none is bound
+	 */
+	Context getUI() {
+		return (foregroundAct != null) ? foregroundAct : master;
+	}
+
+	int interact(final String message, final int titleId) {
+		/* prepare the MTMDecision blocker object */
+		MTMDecision choice = new MTMDecision();
+		final int myId = createDecisionId(choice);
+
+		masterHandler.post(new Runnable() {
+			public void run() {
+				Intent ni = new Intent(master, MemorizingActivity.class);
+				ni.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+				ni.setData(Uri.parse(MemorizingTrustManager.class.getName() + "/" + myId));
+				ni.putExtra(DECISION_INTENT_ID, myId);
+				ni.putExtra(DECISION_INTENT_CERT, message);
+				ni.putExtra(DECISION_TITLE_ID, titleId);
+
+				// we try to directly start the activity and fall back to
+				// making a notification
+				try {
+					getUI().startActivity(ni);
+				} catch (Exception e) {
+					LOGGER.log(Level.FINE, "startActivity(MemorizingActivity)", e);
+					startActivityNotification(ni, myId, message);
+				}
+			}
+		});
+
+		LOGGER.log(Level.FINE, "openDecisions: " + openDecisions + ", waiting on " + myId);
+		try {
+			synchronized(choice) { choice.wait(); }
+		} catch (InterruptedException e) {
+			LOGGER.log(Level.FINER, "InterruptedException", e);
+		}
+		LOGGER.log(Level.FINE, "finished wait on " + myId + ": " + choice.state);
+		return choice.state;
+	}
+	
+	void interactCert(final X509Certificate[] chain, String authType, CertificateException cause)
+			throws CertificateException
+	{
+		switch (interact(certChainMessage(chain, cause), R.string.mtm_accept_cert)) {
+		case MTMDecision.DECISION_ALWAYS:
+			storeCert(chain[0]); // only store the server cert, not the whole chain
+		case MTMDecision.DECISION_ONCE:
+			break;
+		default:
+			throw (cause);
+		}
+	}
+
+	boolean interactHostname(X509Certificate cert, String hostname)
+	{
+		switch (interact(hostNameMessage(cert, hostname), R.string.mtm_accept_servername)) {
+		case MTMDecision.DECISION_ALWAYS:
+			storeCert(hostname, cert);
+		case MTMDecision.DECISION_ONCE:
+			return true;
+		default:
+			return false;
+		}
+	}
+
+	protected static void interactResult(int decisionId, int choice) {
+		MTMDecision d;
+		synchronized(openDecisions) {
+			 d = openDecisions.get(decisionId);
+			 openDecisions.remove(decisionId);
+		}
+		if (d == null) {
+			LOGGER.log(Level.SEVERE, "interactResult: aborting due to stale decision reference!");
+			return;
+		}
+		synchronized(d) {
+			d.state = choice;
+			d.notify();
+		}
+	}
+	
+	class MemorizingHostnameVerifier implements HostnameVerifier {
+		private HostnameVerifier defaultVerifier;
+		
+		public MemorizingHostnameVerifier(HostnameVerifier wrapped) {
+			defaultVerifier = wrapped;
+		}
+
+		protected boolean verify(String hostname, SSLSession session, boolean interactive) {
+			LOGGER.log(Level.FINE, "hostname verifier for " + hostname + ", trying default verifier first");
+			// if the default verifier accepts the hostname, we are done
+			if (defaultVerifier.verify(hostname, session)) {
+				LOGGER.log(Level.FINE, "default verifier accepted " + hostname);
+				return true;
+			}
+			// otherwise, we check if the hostname is an alias for this cert in our keystore
+			try {
+				X509Certificate cert = (X509Certificate)session.getPeerCertificates()[0];
+				//Log.d(TAG, "cert: " + cert);
+				if (cert.equals(appKeyStore.getCertificate(hostname.toLowerCase(Locale.US)))) {
+					LOGGER.log(Level.FINE, "certificate for " + hostname + " is in our keystore. accepting.");
+					return true;
+				} else {
+					LOGGER.log(Level.FINE, "server " + hostname + " provided wrong certificate, asking user.");
+					if (interactive) {
+						return interactHostname(cert, hostname);
+					} else {
+						return false;
+					}
+				}
+			} catch (Exception e) {
+				e.printStackTrace();
+				return false;
+			}
+		}
+		
+		@Override
+		public boolean verify(String hostname, SSLSession session) {
+			return verify(hostname, session, true);
+		}
+	}
+	
+	class NonInteractiveMemorizingHostnameVerifier extends MemorizingHostnameVerifier {
+
+		public NonInteractiveMemorizingHostnameVerifier(HostnameVerifier wrapped) {
+			super(wrapped);
+		}
+		@Override
+		public boolean verify(String hostname, SSLSession session) {
+			return verify(hostname, session, true);
+		}
+		
+		
+	}
+	
+	public X509TrustManager getNonInteractive() {
+		return new NonInteractiveMemorizingTrustManager();
+	}
+	
+	private class NonInteractiveMemorizingTrustManager implements X509TrustManager {
+
+		@Override
+		public void checkClientTrusted(X509Certificate[] chain, String authType)
+				throws CertificateException {
+			MemorizingTrustManager.this.checkCertTrusted(chain, authType, false, false);
+		}
+
+		@Override
+		public void checkServerTrusted(X509Certificate[] chain, String authType)
+				throws CertificateException {
+			MemorizingTrustManager.this.checkCertTrusted(chain, authType, true, false);
+		}
+
+		@Override
+		public X509Certificate[] getAcceptedIssuers() {
+			return MemorizingTrustManager.this.getAcceptedIssuers();
+		}
+		
+	}
+}