android: add the ability to make a "libre" build

A libre build will exclude the following:

- Analytics modules
- Google Play services GMS
- Crashlytics
- Firebase

android/app/build.gradle

@@ -1,6 +1,7 @@
 apply plugin: 'com.android.application'
 
-boolean googleServicesEnabled = project.file('google-services.json').exists()
+boolean googleServicesEnabled \
+    = project.file('google-services.json').exists() && !rootProject.ext.libreBuild
 
 // Crashlytics integration is done as part of Firebase now, so it gets
 // automagically activated with google-services.json
@@ -36,11 +37,24 @@ android {
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules-debug.pro'
             buildConfigField "boolean", "GOOGLE_SERVICES_ENABLED", "${googleServicesEnabled}"
+            buildConfigField "boolean", "LIBRE_BUILD", "${rootProject.ext.libreBuild}"
         }
         release {
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules-release.pro'
             buildConfigField "boolean", "GOOGLE_SERVICES_ENABLED", "${googleServicesEnabled}"
+            buildConfigField "boolean", "LIBRE_BUILD", "${rootProject.ext.libreBuild}"
+        }
+    }
+
+    sourceSets {
+        main {
+            java {
+                if (rootProject.ext.libreBuild) {
+                    srcDir "src"
+                    exclude "**/GoogleServicesHelper.java"
+                }
+            }
         }
     }
 
@@ -58,7 +72,17 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "com.android.support:support-v4:${rootProject.ext.supportLibVersion}"
     implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
-    implementation 'com.google.android.gms:play-services-auth:16.0.1'
+
+    if (!rootProject.ext.libreBuild) {
+        implementation 'com.google.android.gms:play-services-auth:16.0.1'
+
+        // Firebase
+        //  - Crashlytics
+        //  - Dynamic Links
+        implementation 'com.google.firebase:firebase-core:16.0.6'
+        implementation 'com.crashlytics.sdk.android:crashlytics:2.9.8'
+        implementation 'com.google.firebase:firebase-dynamic-links:16.1.5'
+    }
 
     implementation project(':sdk')
 
@@ -73,13 +97,6 @@ dependencies {
         exclude group: "com.android.support", module: "annotations"
     }
     annotationProcessor "com.github.bumptech.glide:compiler:${rootProject.ext.glideVersion}"
-
-    // Firebase
-    //  - Crashlytics
-    //  - Dynamic Links
-    implementation 'com.google.firebase:firebase-core:16.0.6'
-    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.8'
-    implementation 'com.google.firebase:firebase-dynamic-links:16.1.5'
 }
 
 gradle.projectsEvaluated {

android/app/proguard-rules.pro

@@ -80,6 +80,7 @@
 
 # Jisti Meet SDK
 
+-keep class org.jitsi.meet.** { *; }
 -keep class org.jitsi.meet.sdk.** { *; }
 
 # We added the following when we switched minifyEnabled on. Probably because we

android/app/src/main/java/org/jitsi/meet/GoogleServicesHelper.java

@@ -0,0 +1,40 @@
+package org.jitsi.meet;
+
+import android.net.Uri;
+import android.util.Log;
+
+import com.crashlytics.android.Crashlytics;
+import com.google.firebase.dynamiclinks.FirebaseDynamicLinks;
+import io.fabric.sdk.android.Fabric;
+
+import org.jitsi.meet.sdk.JitsiMeetActivity;
+
+/**
+ * Helper class to initialize Google related services and functionality.
+ * This functionality is compiled conditionally and called via reflection, that's why it was
+ * extracted here.
+ *
+ * "Libre builds" (builds with the LIBRE_BUILD flag set) will not include this file.
+ */
+final class GoogleServicesHelper {
+    public static void initialize(JitsiMeetActivity activity) {
+        if (BuildConfig.GOOGLE_SERVICES_ENABLED) {
+            Log.d(activity.getClass().getSimpleName(), "Initializing Google Services");
+
+            Fabric.with(activity, new Crashlytics());
+
+            FirebaseDynamicLinks.getInstance().getDynamicLink(activity.getIntent())
+                .addOnSuccessListener(activity, pendingDynamicLinkData -> {
+                    Uri dynamicLink = null;
+
+                    if (pendingDynamicLinkData != null) {
+                        dynamicLink = pendingDynamicLinkData.getLink();
+                    }
+
+                    if (dynamicLink != null) {
+                        activity.join(dynamicLink.toString());
+                    }
+                });
+        }
+    }
+}

android/app/src/main/java/org/jitsi/meet/MainActivity.java

@@ -29,10 +29,7 @@ import org.jitsi.meet.sdk.JitsiMeet;
 import org.jitsi.meet.sdk.JitsiMeetActivity;
 import org.jitsi.meet.sdk.JitsiMeetConferenceOptions;
 
-import com.crashlytics.android.Crashlytics;
-import com.google.firebase.dynamiclinks.FirebaseDynamicLinks;
-import io.fabric.sdk.android.Fabric;
-
+import java.lang.reflect.Method;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.Map;
@@ -57,22 +54,16 @@ public class MainActivity extends JitsiMeetActivity {
 
     @Override
     protected boolean extraInitialize() {
-        // Setup Crashlytics and Firebase Dynamic Links
-        if (BuildConfig.GOOGLE_SERVICES_ENABLED) {
-            Fabric.with(this, new Crashlytics());
-
-            FirebaseDynamicLinks.getInstance().getDynamicLink(getIntent())
-                .addOnSuccessListener(this, pendingDynamicLinkData -> {
-                    Uri dynamicLink = null;
+        Log.d(this.getClass().getSimpleName(), "LIBRE_BUILD="+BuildConfig.LIBRE_BUILD);
 
-                    if (pendingDynamicLinkData != null) {
-                        dynamicLink = pendingDynamicLinkData.getLink();
-                    }
-
-                    if (dynamicLink != null) {
-                        join(dynamicLink.toString());
-                    }
-                });
+        // Setup Crashlytics and Firebase Dynamic Links
+        // Here we are using reflection since it may have been disabled at compile time.
+        try {
+            Class<?> cls = Class.forName("org.jitsi.meet.GoogleServicesHelper");
+            Method m = cls.getMethod("initialize", JitsiMeetActivity.class);
+            m.invoke(null, this);
+        } catch (Exception e) {
+            // Ignore any error, the module is not compiled when LIBRE_BUILD is enabled.
         }
 
         // In Debug builds React needs permission to write over other apps in

android/build.gradle

@@ -167,6 +167,9 @@ ext {
     // Glide
     excludeAppGlideModule = true
     glideVersion = "4.7.1"  // keep in sync with react-native-fast-image
+
+    // Libre build
+    libreBuild = (System.env.LIBRE_BUILD ?: "true").toBoolean()
 }
 
 // If Android SDK is not installed, accept its license so that it

android/sdk/build.gradle

@@ -10,10 +10,25 @@ android {
     }
 
     buildTypes {
-        debug {}
+        debug {
+            buildConfigField "boolean", "LIBRE_BUILD", "${rootProject.ext.libreBuild}"
+        }
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            buildConfigField "boolean", "LIBRE_BUILD", "${rootProject.ext.libreBuild}"
+        }
+    }
+
+    sourceSets {
+        main {
+            java {
+                if (rootProject.ext.libreBuild) {
+                    srcDir "src"
+                    exclude "**/AmplitudeModule.java"
+                }
+                exclude "test/"
+            }
         }
     }
 }
@@ -24,19 +39,23 @@ dependencies {
     implementation "com.android.support:support-v4:${rootProject.ext.supportLibVersion}"
     implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
 
-    implementation 'com.amplitude:android-sdk:2.14.1'
-    implementation 'com.dropbox.core:dropbox-core-sdk:3.0.8'
     api 'com.facebook.react:react-native:+'
 
+    implementation 'com.dropbox.core:dropbox-core-sdk:3.0.8'
+
+    if (!rootProject.ext.libreBuild) {
+        implementation 'com.amplitude:android-sdk:2.14.1'
+        implementation(project(":react-native-google-signin")) {
+            exclude group: 'com.google.android.gms'
+            exclude group: 'com.android.support'
+        }
+    }
+
     implementation project(':react-native-background-timer')
     implementation project(':react-native-calendar-events')
     implementation(project(':react-native-fast-image')) {
         exclude group: 'com.android.support'
     }
-    implementation(project(":react-native-google-signin")) {
-        exclude group: 'com.google.android.gms'
-        exclude group: 'com.android.support'
-    }
     implementation project(':react-native-immersive')
     implementation project(':react-native-keep-awake')
     implementation project(':react-native-linear-gradient')

android/sdk/src/main/java/org/jitsi/meet/sdk/AppInfoModule.java

@@ -75,6 +75,7 @@ class AppInfoModule
         constants.put(
             "version",
             packageInfo == null ? "" : packageInfo.versionName);
+        constants.put("LIBRE_BUILD", BuildConfig.LIBRE_BUILD);
 
         return constants;
     }

android/sdk/src/main/java/org/jitsi/meet/sdk/ReactInstanceManagerHolder.java

@@ -21,6 +21,7 @@ import android.app.Application;
 import android.support.annotation.Nullable;
 
 import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.ReactPackage;
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReactApplicationContext;
@@ -28,6 +29,7 @@ import com.facebook.react.common.LifecycleState;
 import com.facebook.react.devsupport.DevInternalSettings;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
 
+import java.lang.reflect.Constructor;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -48,7 +50,6 @@ class ReactInstanceManagerHolder {
             ReactApplicationContext reactContext) {
         List<NativeModule> nativeModules
             = new ArrayList<>(Arrays.<NativeModule>asList(
-                new AmplitudeModule(reactContext),
                 new AndroidSettingsModule(reactContext),
                 new AppInfoModule(reactContext),
                 new AudioModeModule(reactContext),
@@ -64,6 +65,14 @@ class ReactInstanceManagerHolder {
             nativeModules.add(new RNConnectionService(reactContext));
         }
 
+        try {
+            Class<?> amplitudeModuleClass = Class.forName("AmplitudeModule");
+            Constructor constructor = amplitudeModuleClass.getConstructor(ReactApplicationContext.class);
+            nativeModules.add((NativeModule)constructor.newInstance(reactContext));
+        } catch (Exception e) {
+            // Ignore any error, the module is not compiled when LIBRE_BUILD is enabled.
+        }
+
         return nativeModules;
     }
 
@@ -128,31 +137,39 @@ class ReactInstanceManagerHolder {
             return;
         }
 
+        List<ReactPackage> packages
+            = new ArrayList<>(Arrays.asList(
+                new com.BV.LinearGradient.LinearGradientPackage(),
+                new com.calendarevents.CalendarEventsPackage(),
+                new com.corbt.keepawake.KCKeepAwakePackage(),
+                new com.dylanvann.fastimage.FastImageViewPackage(),
+                new com.facebook.react.shell.MainReactPackage(),
+                new com.oblador.vectoricons.VectorIconsPackage(),
+                new com.ocetnik.timer.BackgroundTimerPackage(),
+                new com.oney.WebRTCModule.WebRTCModulePackage(),
+                new com.rnimmersive.RNImmersivePackage(),
+                new com.zmxv.RNSound.RNSoundPackage(),
+                new ReactPackageAdapter() {
+                    @Override
+                    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+                        return ReactInstanceManagerHolder.createNativeModules(reactContext);
+                    }
+                }));
+
+        try {
+            Class<?> googlePackageClass = Class.forName("co.apptailor.googlesignin.RNGoogleSigninPackage");
+            Constructor constructor = googlePackageClass.getConstructor();
+            packages.add((ReactPackage)constructor.newInstance());
+        } catch (Exception e) {
+            // Ignore any error, the module is not compiled when LIBRE_BUILD is enabled.
+        }
+
         reactInstanceManager
             = ReactInstanceManager.builder()
                 .setApplication(application)
                 .setBundleAssetName("index.android.bundle")
                 .setJSMainModulePath("index.android")
-                .addPackage(new co.apptailor.googlesignin.RNGoogleSigninPackage())
-                .addPackage(new com.BV.LinearGradient.LinearGradientPackage())
-                .addPackage(new com.calendarevents.CalendarEventsPackage())
-                .addPackage(new com.corbt.keepawake.KCKeepAwakePackage())
-                .addPackage(new com.dylanvann.fastimage.FastImageViewPackage())
-                .addPackage(new com.facebook.react.shell.MainReactPackage())
-                .addPackage(new com.oblador.vectoricons.VectorIconsPackage())
-                .addPackage(new com.ocetnik.timer.BackgroundTimerPackage())
-                .addPackage(new com.oney.WebRTCModule.WebRTCModulePackage())
-                .addPackage(new com.rnimmersive.RNImmersivePackage())
-                .addPackage(new com.zmxv.RNSound.RNSoundPackage())
-                .addPackage(new ReactPackageAdapter() {
-                    @Override
-                    public List<NativeModule> createNativeModules(
-                            ReactApplicationContext reactContext) {
-                        return
-                            ReactInstanceManagerHolder.createNativeModules(
-                                reactContext);
-                    }
-                })
+                .addPackages(packages)
                 .setUseDeveloperSupport(BuildConfig.DEBUG)
                 .setInitialLifecycleState(LifecycleState.RESUMED)
                 .build();

react/features/analytics/handlers/amplitude/Amplitude.native.js

@@ -13,6 +13,11 @@ class Amplitude {
      * be used only for multi-project logging.
      */
     constructor(instanceName) {
+        // It might not have been included in the build.
+        if (!AmplitudeNative) {
+            throw new Error('Amplitude analytics is not supported');
+        }
+
         this._instanceName = instanceName;
     }
 

react/features/base/config/functions.js → react/features/base/config/functions.any.js

@@ -1,4 +1,4 @@
-/* @flow */
+// @flow
 
 import _ from 'lodash';
 

react/features/base/config/functions.native.js

@@ -0,0 +1,21 @@
+// @flow
+
+import { NativeModules } from 'react-native';
+
+export * from './functions.any';
+
+/**
+ * Removes all analytics related options from the given configuration, in case of a libre build.
+ *
+ * @param {*} config - The configuration which needs to be cleaned up.
+ * @returns {void}
+ */
+export function _cleanupConfig(config: Object) {
+    if (NativeModules.AppInfo.LIBRE_BUILD) {
+        config.analytics.scriptURLs = [];
+        delete config.analytics.amplitudeAPPKey;
+        delete config.analytics.googleAnalyticsTrackingId;
+        delete config.callStatsID;
+        delete config.callStatsSecret;
+    }
+}

react/features/base/config/functions.web.js

@@ -0,0 +1,12 @@
+// @flow
+
+export * from './functions.any';
+
+/**
+ * Removes all analytics related options from the given configuration, in case of a libre build.
+ *
+ * @param {*} config - The configuration which needs to be cleaned up.
+ * @returns {void}
+ */
+export function _cleanupConfig(config: Object) { // eslint-disable-line no-unused-vars
+}

react/features/base/config/reducer.js

@@ -5,6 +5,7 @@ import _ from 'lodash';
 import { equals, ReducerRegistry, set } from '../redux';
 
 import { CONFIG_WILL_LOAD, LOAD_CONFIG_ERROR, SET_CONFIG } from './actionTypes';
+import { _cleanupConfig } from './functions';
 
 /**
  * The initial state of the feature base/config when executing in a
@@ -29,6 +30,8 @@ const INITIAL_NON_RN_STATE = {
  * @type {Object}
  */
 const INITIAL_RN_STATE = {
+    analytics: {},
+
     // FIXME The support for audio levels in lib-jitsi-meet polls the statistics
     // of WebRTC at a short interval multiple times a second. Unfortunately,
     // React Native is slow to fetch these statistics from the native WebRTC
@@ -135,6 +138,8 @@ function _setConfig(state, { config }) {
         _getInitialState()
     );
 
+    _cleanupConfig(newState);
+
     return equals(state, newState) ? state : newState;
 }
 

react/features/google-api/googleApi.native.js

@@ -1,8 +1,12 @@
 // @flow
 
-import {
-    GoogleSignin
-} from 'react-native-google-signin';
+import { NativeModules } from 'react-native';
+
+let GoogleSignin;
+
+if (NativeModules.RNGoogleSignin) {
+    GoogleSignin = require('react-native-google-signin').GoogleSignin;
+}
 
 import {
     API_URL_BROADCAST_STREAMS,
@@ -26,7 +30,9 @@ class GoogleApi {
      * @returns {void}
      */
     configure(config: Object) {
-        GoogleSignin.configure(config);
+        if (GoogleSignin) {
+            GoogleSignin.configure(config);
+        }
     }
 
     /**
@@ -58,6 +64,10 @@ class GoogleApi {
      * @returns {Promise<*>}
      */
     hasPlayServices() {
+        if (!GoogleSignin) {
+            return Promise.reject(new Error('Google SignIn not supported'));
+        }
+
         return GoogleSignin.hasPlayServices();
     }