Migrate tunnel related classes to tunnel/ Gradle module

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

.gitmodules

@@ -1,3 +1,3 @@
-[submodule "app/tools/wireguard-tools"]
-	path = app/tools/wireguard-tools
+[submodule "tunnel/tools/wireguard-tools"]
+	path = tunnel/tools/wireguard-tools
 	url = https://git.zx2c4.com/wireguard-tools

app/build.gradle

@@ -65,51 +65,21 @@ android {
             }
         }
     }
-    externalNativeBuild {
-        cmake {
-            path 'tools/CMakeLists.txt'
-        }
-    }
-}
-
-ext {
-    annotationsVersion = '1.1.0'
-    appcompatVersion = '1.1.0'
-    cardviewVersion = '1.0.0'
-    coreKtxVersion = '1.2.0'
-    constraintLayoutVersion = '1.1.3'
-    coordinatorLayoutVersion = '1.1.0'
-    databindingVersion = '3.6.0'
-    fragmentVersion = '1.2.2'
-    materialComponentsVersion = '1.1.0'
-    jsr305Version = '3.0.2'
-    kotlinVersion = '1.3.70'
-    preferenceVersion = '1.1.0'
-    streamsupportVersion = '1.7.1'
-    threetenabpVersion = '1.2.2'
-    // ZXING switched minSdk to 24 so we cannot upgrade to 4.0.2 without following suit.
-    // If you choose to upgrade to minSDK 24 then you should also disable Jetifier from
-    // gradle.properties.
-    zxingEmbeddedVersion = '3.6.0'
-    eddsaVersion = '0.3.0'
 }
 
 dependencies {
+    implementation project(":tunnel")
     implementation "androidx.annotation:annotation:$annotationsVersion"
     implementation "androidx.appcompat:appcompat:$appcompatVersion"
     implementation "androidx.cardview:cardview:$cardviewVersion"
     implementation "androidx.constraintlayout:constraintlayout:$constraintLayoutVersion"
     implementation "androidx.coordinatorlayout:coordinatorlayout:$coordinatorLayoutVersion"
     implementation "androidx.core:core-ktx:$coreKtxVersion"
-    implementation "androidx.databinding:databinding-runtime:$databindingVersion"
+    implementation "androidx.databinding:databinding-runtime:$agpVersion"
     implementation "androidx.fragment:fragment:$fragmentVersion"
     implementation "androidx.preference:preference:$preferenceVersion"
     implementation "com.google.android.material:material:$materialComponentsVersion"
-    implementation "com.google.code.findbugs:jsr305:$jsr305Version"
-    implementation "com.jakewharton.threetenabp:threetenabp:$threetenabpVersion"
     implementation "com.journeyapps:zxing-android-embedded:$zxingEmbeddedVersion"
-    implementation "net.sourceforge.streamsupport:android-retrofuture:$streamsupportVersion"
-    implementation "net.sourceforge.streamsupport:android-retrostreams:$streamsupportVersion"
     implementation "net.i2p.crypto:eddsa:$eddsaVersion"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion"
 }

app/src/main/AndroidManifest.xml

@@ -73,14 +73,6 @@
             </intent-filter>
         </receiver>
 
-        <service
-            android:name=".backend.GoBackend$VpnService"
-            android:permission="android.permission.BIND_VPN_SERVICE">
-            <intent-filter>
-                <action android:name="android.net.VpnService" />
-            </intent-filter>
-        </service>
-
         <service
             android:name=".QuickTileService"
             android:icon="@drawable/ic_tile"

build.gradle

@@ -6,9 +6,31 @@ allprojects {
 }
 
 buildscript {
+    ext {
+        annotationsVersion = '1.1.0'
+        appcompatVersion = '1.1.0'
+        cardviewVersion = '1.0.0'
+        collectionVersion = '1.1.0'
+        coreKtxVersion = '1.2.0'
+        constraintLayoutVersion = '1.1.3'
+        coordinatorLayoutVersion = '1.1.0'
+        agpVersion = '3.6.1'
+        fragmentVersion = '1.2.2'
+        materialComponentsVersion = '1.1.0'
+        jsr305Version = '3.0.2'
+        kotlinVersion = '1.3.70'
+        preferenceVersion = '1.1.0'
+        streamsupportVersion = '1.7.1'
+        threetenabpVersion = '1.2.2'
+        // ZXING switched minSdk to 24 so we cannot upgrade to 4.0.2 without following suit.
+        // If you choose to upgrade to minSDK 24 then you should also disable Jetifier from
+        // gradle.properties.
+        zxingEmbeddedVersion = '3.6.0'
+        eddsaVersion = '0.3.0'
+    }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.1'
-        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.70'
+        classpath "com.android.tools.build:gradle:$agpVersion"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
     repositories {
         google()

settings.gradle

@@ -1 +1,2 @@
 include ':app'
+include ':tunnel'

tunnel/build.gradle

@@ -0,0 +1,30 @@
+apply plugin: 'com.android.library'
+
+android {
+    buildToolsVersion '29.0.3'
+    compileSdkVersion 29
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName '1.0'
+    }
+    externalNativeBuild {
+        cmake {
+            path 'tools/CMakeLists.txt'
+        }
+    }
+}
+
+dependencies {
+    api "net.sourceforge.streamsupport:android-retrofuture:$streamsupportVersion"
+    api "net.sourceforge.streamsupport:android-retrostreams:$streamsupportVersion"
+    api "com.google.code.findbugs:jsr305:$jsr305Version"
+    implementation "androidx.annotation:annotation:$annotationsVersion"
+    implementation "androidx.collection:collection:$collectionVersion"
+    implementation "com.jakewharton.threetenabp:threetenabp:$threetenabpVersion"
+}

tunnel/src/main/AndroidManifest.xml

@@ -0,0 +1,17 @@
+<!--
+  ~ Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+  ~ SPDX-License-Identifier: Apache-2.0
+  -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.wireguard.android.tunnel">
+    <application>
+            <service
+            android:name="com.wireguard.android.backend.GoBackend$VpnService"
+            android:permission="android.permission.BIND_VPN_SERVICE">
+            <intent-filter>
+                <action android:name="android.net.VpnService" />
+            </intent-filter>
+        </service>
+    </application>
+</manifest>