Full Code of rafaeltoledo/android-security for AI

Repository: rafaeltoledo/android-security
Branch: master
Commit: 2ca3680b911b
Files: 26
Total size: 40.4 KB

Directory structure:
gitextract_7hjh6zbc/

├── .gitignore
├── LICENSE.txt
├── README.md
├── app/
│   ├── .gitignore
│   ├── build.gradle
│   ├── proguard-rules.pro
│   └── src/
│       └── main/
│           ├── AndroidManifest.xml
│           ├── java/
│           │   └── net/
│           │       └── rafaeltoledo/
│           │           └── security/
│           │               ├── SecurityApp.java
│           │               ├── http/
│           │               │   ├── HttpClientProvider.java
│           │               │   └── Tls12SslSocketFactory.java
│           │               ├── ui/
│           │               │   ├── MainActivity.java
│           │               │   └── MainController.java
│           │               └── util/
│           │                   ├── EnvironmentChecker.java
│           │                   ├── InstallationChecker.java
│           │                   └── SignatureUtils.java
│           └── res/
│               ├── layout/
│               │   └── activity_main.xml
│               └── values/
│                   ├── colors.xml
│                   ├── strings.xml
│                   └── styles.xml
├── build.gradle
├── gradle/
│   └── wrapper/
│       ├── gradle-wrapper.jar
│       └── gradle-wrapper.properties
├── gradle.properties
├── gradlew
├── gradlew.bat
└── settings.gradle

================================================
FILE CONTENTS
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================================================
FILE: .gitignore
================================================
*.iml
.gradle
/local.properties
/.idea
.DS_Store
/build
/captures
.externalNativeBuild


================================================
FILE: LICENSE.txt
================================================

                                 Apache License
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                        http://www.apache.org/licenses/

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   Copyright 2017 Rafael Toledo

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

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================================================
FILE: README.md
================================================
# Android Security Sandbox

A sandbox app with some tools and code to help you to better secure your Android apps.

[Related presentation - pt-BR](https://speakerdeck.com/rafaeltoledo/seguranca-no-android-1)

## This sample includes
1. Obfuscation using Proguard and `android-proguard-optimize` rules
2. Encrypted database storage using [SQLCipher](https://www.zetetic.net/sqlcipher/sqlcipher-for-android)
3. Encrypted key-value storage using [Hawk](https://github.com/orhanobut/hawk), powered by [Conceal](https://facebook.github.io/conceal/)
4. Device checking using [SafetyNet](https://developers.google.com/android/reference/com/google/android/gms/safetynet/SafetyNet)
5. Root detection using [RootBeer](https://github.com/scottyab/rootbeer)
6. HTTP pinning using [OkHttp](https://github.com/square/okhttp/wiki/HTTPS)
7. Other environment checks, like *Debug*, *Emulator*, *Installation Source*, and *Tampering*


================================================
FILE: app/.gitignore
================================================
/build


================================================
FILE: app/build.gradle
================================================
apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.3'

    defaultConfig {
        applicationId 'net.rafaeltoledo.security'
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName '1.0.0'

        testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'

        manifestPlaceholders = [
                SAFETYNET_API_KEY: System.getenv('SAFETYNET_API_KEY')
        ]
    }

    dataBinding.enabled true

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    signingConfigs {
        release {
            storeFile file(System.getenv('PROJECT_STORE_FILE'))
            storePassword System.getenv('PROJECT_STORE_PASSWORD')
            keyAlias System.getenv('PROJECT_KEY_ALIAS')
            keyPassword System.getenv('PROJECT_KEY_PASSWORD')
        }
    }

    buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

            signingConfig signingConfigs.release
        }
    }
}

dependencies {
    compile 'com.android.support:appcompat-v7:25.3.1'

    compile 'com.scottyab:rootbeer-lib:0.0.6'
    compile 'com.orhanobut:hawk:2.0.1'
    compile 'com.google.code.gson:gson:2.8.0' // Forcing latest GSON
    compile 'net.zetetic:android-database-sqlcipher:3.5.7@aar'
    compile 'com.squareup.okhttp3:okhttp:3.7.0'

    compile 'com.google.android.gms:play-services-safetynet:10.2.4'
}


================================================
FILE: app/proguard-rules.pro
================================================
-dontwarn java.nio.file.*
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
-dontwarn okio.**
-dontwarn okhttp3.**

-keepattributes Signature
-keepattributes EnclosingMethod
-keepattributes *Annotation*

-keep class sun.misc.Unsafe { *; }
-keep class okhttp3.** { *; }
-keep interface okhttp3.** { *; }
-keep class com.google.gson.stream.** { *; }
-keep class net.sqlcipher.** { *; }
-keep class net.sqlcipher.database.** { *; }

-assumenosideeffects class android.util.Log {
    public static boolean isLoggable(java.lang.String, int);
    public static int v(...);
    public static int i(...);
    public static int w(...);
    public static int d(...);
    public static int e(...);
}


================================================
FILE: app/src/main/AndroidManifest.xml
================================================
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="net.rafaeltoledo.security">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:name=".SecurityApp"
        android:allowBackup="false"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:ignore="GoogleAppIndexingWarning">

        <activity android:name=".ui.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <meta-data
            android:name="com.google.android.safetynet.ATTEST_API_KEY"
            android:value="${SAFETYNET_API_KEY}" />

    </application>
</manifest>


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/SecurityApp.java
================================================
package net.rafaeltoledo.security;

import android.app.Application;
import android.util.Log;

import com.orhanobut.hawk.Hawk;

import net.sqlcipher.database.SQLiteDatabase;

public class SecurityApp extends Application {

    private static final String TAG = SecurityApp.class.getSimpleName();
    private static final String PREF_TIMES = "net.rafaeltoledo.security.PREF_TIMES";

    @Override
    public void onCreate() {
        super.onCreate();
        Hawk.init(this).build();
        SQLiteDatabase.loadLibs(this);

        int times = Hawk.get(PREF_TIMES, 0) + 1;
        Log.d(TAG, "Psss! Let me tell a secret: you opened this app " + times + " times.");
        Hawk.put(PREF_TIMES, times);
    }
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/http/HttpClientProvider.java
================================================
package net.rafaeltoledo.security.http;

import android.util.Log;

import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.util.Collections;

import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;

import okhttp3.CertificatePinner;
import okhttp3.ConnectionSpec;
import okhttp3.OkHttpClient;
import okhttp3.TlsVersion;

public class HttpClientProvider {

    private static final String TAG = HttpClientProvider.class.getSimpleName();

    private static final OkHttpClient CLIENT = init();

    private static OkHttpClient init() {
        ConnectionSpec.Builder spec = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
                .tlsVersions(TlsVersion.TLS_1_2);
        OkHttpClient.Builder client = new OkHttpClient.Builder()
                .connectionSpecs(Collections.singletonList(spec.build()));
        // This setup is necessary because API 16-18 support TLS 1.2,
        // but use 1.0 as default.
        setupTls(client);
        setupPinning(client);

        return client.build();
    }

    private static void setupPinning(OkHttpClient.Builder client) {
        client.certificatePinner(new CertificatePinner.Builder()
                .add("github.com", "sha256/pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=")
                .add("github.com", "sha256/RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=")
                .add("github.com", "sha256/WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18=")
                .build());
    }

    private static void setupTls(OkHttpClient.Builder builder) {
        try {
            TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
            factory.init((KeyStore) null);
            for (TrustManager trustManager : factory.getTrustManagers()) {
                if (trustManager instanceof X509TrustManager) {
                    builder.sslSocketFactory(new Tls12SslSocketFactory(), (X509TrustManager) trustManager);
                    break;
                }
            }
        } catch (GeneralSecurityException e) {
            Log.e(TAG, "Failed to initialize SSL Socket Factory", e);
        }
    }

    public static OkHttpClient getClient() {
        return CLIENT;
    }
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/http/Tls12SslSocketFactory.java
================================================
package net.rafaeltoledo.security.http;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;

import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;

public class Tls12SslSocketFactory extends SSLSocketFactory {
    private final String tag = "TLSv1.2";

    private SSLSocketFactory delegate;

    public Tls12SslSocketFactory() {
        delegate = (SSLSocketFactory) SSLSocketFactory.getDefault();
    }

    @Override
    public String[] getDefaultCipherSuites() {
        return delegate.getDefaultCipherSuites();
    }

    @Override
    public String[] getSupportedCipherSuites() {
        return delegate.getSupportedCipherSuites();
    }

    @Override
    public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException {
        SSLSocket s = (SSLSocket) delegate.createSocket(socket, host, port, autoClose);
        s.setEnabledProtocols(new String[]{tag});
        return s;
    }

    @Override
    public Socket createSocket(String host, int port) throws IOException {
        SSLSocket s = (SSLSocket) delegate.createSocket(host, port);
        s.setEnabledProtocols(new String[]{tag});
        return s;
    }

    @Override
    public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException {
        SSLSocket s = (SSLSocket) delegate.createSocket(host, port, localHost, localPort);
        s.setEnabledProtocols(new String[]{tag});
        return s;
    }

    @Override
    public Socket createSocket(InetAddress host, int port) throws IOException {
        SSLSocket s = (SSLSocket) delegate.createSocket(host, port);
        s.setEnabledProtocols(new String[]{tag});
        return s;
    }

    @Override
    public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
        SSLSocket s = (SSLSocket) delegate.createSocket(address, port, localAddress, localPort);
        s.setEnabledProtocols(new String[]{tag});
        return s;
    }
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/ui/MainActivity.java
================================================
package net.rafaeltoledo.security.ui;

import android.databinding.DataBindingUtil;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.safetynet.SafetyNet;
import com.scottyab.rootbeer.RootBeer;

import net.rafaeltoledo.security.R;
import net.rafaeltoledo.security.databinding.ActivityMainBinding;
import net.rafaeltoledo.security.http.HttpClientProvider;
import net.rafaeltoledo.security.http.Tls12SslSocketFactory;
import net.rafaeltoledo.security.util.EnvironmentChecker;
import net.rafaeltoledo.security.util.InstallationChecker;
import net.rafaeltoledo.security.util.SignatureUtils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.SecureRandom;
import java.util.Collections;
import java.util.Random;

import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.ConnectionSpec;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.TlsVersion;

public class MainActivity extends AppCompatActivity implements GoogleApiClient.OnConnectionFailedListener, MainController {

    private static final String TAG = MainActivity.class.getSimpleName();

    private GoogleApiClient client;
    private final Random random = new SecureRandom();

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);

        client = new GoogleApiClient.Builder(this)
                .addApi(SafetyNet.API)
                .enableAutoManage(this, this)
                .build();

        binding.root.setText(new RootBeer(this).isRooted() ? "Device is rooted" : "Device isn't rooted");
        binding.installation.setText(InstallationChecker.verifyInstaller(this) ? "Installed from Play Store" : "Installed from unknown source");

        binding.enviroment.setText((EnvironmentChecker.alternativeIsEmulator() ? "Running on an emulator" : "Running on a device")
                + (EnvironmentChecker.isDebuggable(this) ? " with debugger" : ""));

        binding.tampering.setText((InstallationChecker.checkPackage(this) ?
                "The package is consistent" : "The package was modified")
                + (SignatureUtils.checkSignature(this) ? " and the signature is ok" : " and the signature was changed!"));

        binding.setController(this);
    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        Log.e(TAG, "Failed to connect to Google Client");
    }

    @Override
    public void requestSafetyNetCheck() {
        byte[] nonce = getRequestNonce();
        SafetyNet.SafetyNetApi.attest(client, nonce)
                .setResultCallback(result -> {
                    if (result.getStatus().isSuccess()) {
                        showSafetyNetResult(result.getJwsResult());
                    } else {
                        Log.e(TAG, "Error on SafetyNet request - Code ("
                                + result.getStatus().getStatusCode() + "): " +
                                "" + result.getStatus().getStatusMessage());
                    }
                });
    }

    @Override
    public void performOkHttpRequest() {
        OkHttpClient client = HttpClientProvider.getClient();

        Request request = new Request.Builder()
                .url("https://github.com/robots.txt")
                .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e(TAG, "Failed to perform request", e);
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.d(TAG, response.body().string());
            }
        });
    }

    private void showSafetyNetResult(String result) {
        /*
           Forward this result to your server together with the nonce for verification.
           You can also parse the JwsResult locally to confirm that the API
           returned a response by checking for an 'error' field first and before
           retrying the request with an exponential backoff.
           NOTE: Do NOT rely on a local, client-side only check for security, you
           must verify the response on a remote server!
        */
        Log.d(TAG, "Success! SafetyNet result:\n" + result + "\n");
    }

    // Ideally, the Nonce should be generated in your server
    private byte[] getRequestNonce() {
        String nonceData = "SafetyNet Sample: " + System.currentTimeMillis();
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        byte[] bytes = new byte[24];
        random.nextBytes(bytes);
        try {
            byteStream.write(bytes);
            byteStream.write(nonceData.getBytes());
        } catch (IOException e) {
            Log.e(TAG, "Failed to generate nonce", e);
            return null;
        }
        return byteStream.toByteArray();
    }
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/ui/MainController.java
================================================
package net.rafaeltoledo.security.ui;

public interface MainController {

    void requestSafetyNetCheck();

    void performOkHttpRequest();
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/util/EnvironmentChecker.java
================================================
package net.rafaeltoledo.security.util;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.os.Build;
import android.util.Log;

public class EnvironmentChecker {

    private static final String TAG = EnvironmentChecker.class.getSimpleName();

    private static String getSystemProperty(String name) throws Exception {
        Class systemPropertyClass = Class.forName("android.os.SystemProperties");
        return (String) systemPropertyClass.getMethod("get", new Class[]{String.class})
                .invoke(systemPropertyClass, name);
    }

    public static boolean alternativeIsEmulator() {
        return Build.FINGERPRINT.startsWith("generic")
                || Build.FINGERPRINT.startsWith("unknown")
                || Build.MODEL.contains("google_sdk")
                || Build.MODEL.contains("Emulator")
                || Build.MODEL.contains("Android SDK built for x86")
                || Build.MANUFACTURER.contains("Genymotion")
                || (Build.BRAND.startsWith("generic") && Build.DEVICE.startsWith("generic"))
                || "google_sdk".equals(Build.PRODUCT)
                || "goldfish".equals(Build.HARDWARE);
    }

    public static boolean isEmulator() {
        try {
            boolean goldfish = getSystemProperty("ro.hardware").contains("goldfish");
            boolean emu = getSystemProperty("ro.kernel.qemu").length() > 0;
            boolean sdk = getSystemProperty("ro.product.model").equals("sdk");

            if (emu || goldfish || sdk) {
                return true;
            }

        } catch (Exception e) {
            Log.d(TAG, "Failed to check enviroment", e);
        }

        return false;
    }

    public static boolean isDebuggable(Context context) {
        return (context.getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0;
    }
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/util/InstallationChecker.java
================================================
package net.rafaeltoledo.security.util;

import android.content.Context;

public class InstallationChecker {

    private static final String GOOGLE_PLAY = "com.android.vending";
    private static final String ORIGINAL_PACKAGE = "net.rafaeltoledo.security";

    public static boolean verifyInstaller(Context context) {
        final String installer = context.getPackageManager()
                .getInstallerPackageName(context.getPackageName());
        return installer != null && installer.compareTo(GOOGLE_PLAY) == 0;
    }

    public static boolean checkPackage(Context context) {
        return context.getPackageName().compareTo(ORIGINAL_PACKAGE) == 0;
    }
}


================================================
FILE: app/src/main/java/net/rafaeltoledo/security/util/SignatureUtils.java
================================================
package net.rafaeltoledo.security.util;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;
import android.util.Base64;
import android.util.Log;

import java.security.MessageDigest;

public class SignatureUtils {

    private static final String TAG = SignatureUtils.class.getSimpleName();
    private static final String SIGNATURE = "0P333z1O57jHJ87piTMi3W6VuQU=\n";

    public static boolean checkSignature(Context context) {
        try {
            PackageInfo packageInfo = context.getPackageManager()
                    .getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES);
            for (Signature signature : packageInfo.signatures) {
                MessageDigest sha = MessageDigest.getInstance("SHA");
                sha.update(signature.toByteArray());
                final String currentSignature = Base64.encodeToString(sha.digest(), Base64.DEFAULT);
                if (SIGNATURE.equals(currentSignature)) {
                    return true;
                }
            }
        } catch (Exception e) {
            Log.e(TAG, "Failed to check signature", e);
        }

        return false;
    }
}


================================================
FILE: app/src/main/res/layout/activity_main.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>

        <variable
            name="controller"
            type="net.rafaeltoledo.security.ui.MainController" />
    </data>

    <android.support.v7.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:orientation="vertical">

        <TextView
            android:id="@+id/root"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/installation"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/enviroment"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/tampering"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center" />

        <Button
            android:id="@+id/button_safetynet"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="@{() -> controller.requestSafetyNetCheck()}"
            android:text="@string/button_safetynet" />

        <Button
            android:id="@+id/button_okhttp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="@{() -> controller.performOkHttpRequest()}"
            android:text="@string/button_okhttp" />

    </android.support.v7.widget.LinearLayoutCompat>
</layout>

================================================
FILE: app/src/main/res/values/colors.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
</resources>


================================================
FILE: app/src/main/res/values/strings.xml
================================================
<resources>
    <string name="app_name">Security</string>

    <string name="button_safetynet">SafetyNet</string>
    <string name="button_okhttp">Pinned Request</string>
</resources>


================================================
FILE: app/src/main/res/values/styles.xml
================================================
<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>


================================================
FILE: build.gradle
================================================
buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.4.0-alpha7'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}


================================================
FILE: gradle/wrapper/gradle-wrapper.properties
================================================
#Tue May 02 09:28:42 BRT 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-all.zip


================================================
FILE: gradle.properties
================================================
# Project-wide Gradle settings.

# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.

# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html

# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx1536m

# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true


================================================
FILE: gradlew
================================================
#!/usr/bin/env bash

##############################################################################
##
##  Gradle start up script for UN*X
##
##############################################################################

# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""

APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`

# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"

warn ( ) {
    echo "$*"
}

die ( ) {
    echo
    echo "$*"
    echo
    exit 1
}

# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
case "`uname`" in
  CYGWIN* )
    cygwin=true
    ;;
  Darwin* )
    darwin=true
    ;;
  MINGW* )
    msys=true
    ;;
esac

# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
    ls=`ls -ld "$PRG"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '/.*' > /dev/null; then
        PRG="$link"
    else
        PRG=`dirname "$PRG"`"/$link"
    fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null

CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar

# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
        # IBM's JDK on AIX uses strange locations for the executables
        JAVACMD="$JAVA_HOME/jre/sh/java"
    else
        JAVACMD="$JAVA_HOME/bin/java"
    fi
    if [ ! -x "$JAVACMD" ] ; then
        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
    fi
else
    JAVACMD="java"
    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi

# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
    MAX_FD_LIMIT=`ulimit -H -n`
    if [ $? -eq 0 ] ; then
        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
            MAX_FD="$MAX_FD_LIMIT"
        fi
        ulimit -n $MAX_FD
        if [ $? -ne 0 ] ; then
            warn "Could not set maximum file descriptor limit: $MAX_FD"
        fi
    else
        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
    fi
fi

# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi

# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
    JAVACMD=`cygpath --unix "$JAVACMD"`

    # We build the pattern for arguments to be converted via cygpath
    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
    SEP=""
    for dir in $ROOTDIRSRAW ; do
        ROOTDIRS="$ROOTDIRS$SEP$dir"
        SEP="|"
    done
    OURCYGPATTERN="(^($ROOTDIRS))"
    # Add a user-defined pattern to the cygpath arguments
    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
    fi
    # Now convert the arguments - kludge to limit ourselves to /bin/sh
    i=0
    for arg in "$@" ; do
        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option

        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
        else
            eval `echo args$i`="\"$arg\""
        fi
        i=$((i+1))
    done
    case $i in
        (0) set -- ;;
        (1) set -- "$args0" ;;
        (2) set -- "$args0" "$args1" ;;
        (3) set -- "$args0" "$args1" "$args2" ;;
        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
    esac
fi

# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
function splitJvmOpts() {
    JVM_OPTS=("$@")
}
eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"

exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"


================================================
FILE: gradlew.bat
================================================
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem  Gradle startup script for Windows
@rem
@rem ##########################################################################

@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal

@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=

set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%

@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome

set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init

echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.

goto fail

:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe

if exist "%JAVA_EXE%" goto init

echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.

goto fail

:init
@rem Get command-line arguments, handling Windowz variants

if not "%OS%" == "Windows_NT" goto win9xME_args
if "%@eval[2+2]" == "4" goto 4NT_args

:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2

:win9xME_args_slurp
if "x%~1" == "x" goto execute

set CMD_LINE_ARGS=%*
goto execute

:4NT_args
@rem Get arguments from the 4NT Shell from JP Software
set CMD_LINE_ARGS=%$

:execute
@rem Setup the command line

set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd

:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1

:mainEnd
if "%OS%"=="Windows_NT" endlocal

:omega


================================================
FILE: settings.gradle
================================================
include ':app'