Moved SSL providers to new module

17 files changed, 158 insertions, 69 deletions

diff --git a/build.gradle b/build.gradle
index aa7f8ebbe..e4c95ae30 100644
--- a/build.gradle
+++ b/build.gradle
@@ -73,6 +73,7 @@ project.ext {
 
     // Google Play build
     wearableSupportVersion = "2.6.0"
+    playServicesVersion = "8.4.0"
 
     //Tests
     awaitilityVersion = "3.1.6"
diff --git a/core/build.gradle b/core/build.gradle
index e68fa9f97..75ad7faad 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -71,6 +71,7 @@ android {
 }
 
 dependencies {
+    implementation project(':net:ssl')
     implementation project(':ui:app-start-intent')
     implementation project(':ui:common')
 
@@ -102,13 +103,10 @@ dependencies {
     // Non-free dependencies:
     playApi 'com.google.android.libraries.cast.companionlibrary:ccl:2.9.1'
     playApi 'androidx.mediarouter:mediarouter:1.0.0'
-    playApi 'com.google.android.gms:play-services-cast:8.4.0'
+    playApi "com.google.android.gms:play-services-cast:$playServicesVersion"
     playApi "com.google.android.support:wearable:$wearableSupportVersion"
     compileOnly "com.google.android.wearable:wearable:$wearableSupportVersion"
 
-    // bundle conscrypt with free builds
-    freeImplementation "org.conscrypt:conscrypt-android:$conscryptVersion"
-
     testImplementation "org.awaitility:awaitility:$awaitilityVersion"
     testImplementation 'junit:junit:4.13'
     testImplementation 'org.mockito:mockito-inline:3.5.13'
diff --git a/core/src/free/java/de/danoeh/antennapod/core/ClientConfig.java b/core/src/free/java/de/danoeh/antennapod/core/ClientConfig.java
index 0193bf8ce..755bec14e 100644
--- a/core/src/free/java/de/danoeh/antennapod/core/ClientConfig.java
+++ b/core/src/free/java/de/danoeh/antennapod/core/ClientConfig.java
@@ -1,8 +1,8 @@
 package de.danoeh.antennapod.core;
 
 import android.content.Context;
-import java.security.Security;
-import org.conscrypt.Conscrypt;
+
+import de.danoeh.antennapod.net.ssl.SslProviderInstaller;
 
 import de.danoeh.antennapod.core.preferences.PlaybackPreferences;
 import de.danoeh.antennapod.core.preferences.SleepTimerPreferences;
@@ -42,16 +42,11 @@ public class ClientConfig {
         UserPreferences.init(context);
         UsageStatistics.init(context);
         PlaybackPreferences.init(context);
-        installSslProvider(context);
+        SslProviderInstaller.install(context);
         NetworkUtils.init(context);
         AntennapodHttpClient.setCacheDirectory(new File(context.getCacheDir(), "okhttp"));
         SleepTimerPreferences.init(context);
         NotificationUtils.createChannels(context);
         initialized = true;
     }
-
-    private static void installSslProvider(Context context) {
-        // Insert bundled conscrypt as highest security provider (overrides OS version).
-        Security.insertProviderAt(Conscrypt.newProvider(), 1);
-    }
 }
diff --git a/core/src/main/java/de/danoeh/antennapod/core/service/download/AntennapodHttpClient.java b/core/src/main/java/de/danoeh/antennapod/core/service/download/AntennapodHttpClient.java
index a01b3cb52..c4029d57f 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/service/download/AntennapodHttpClient.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/service/download/AntennapodHttpClient.java
@@ -1,19 +1,14 @@
 package de.danoeh.antennapod.core.service.download;
 
-import android.os.Build;
 import android.text.TextUtils;
 import android.util.Log;
 import androidx.annotation.NonNull;
 import de.danoeh.antennapod.core.preferences.UserPreferences;
 import de.danoeh.antennapod.core.service.BasicAuthorizationInterceptor;
 import de.danoeh.antennapod.core.service.UserAgentInterceptor;
-import de.danoeh.antennapod.core.ssl.BackportTrustManager;
-import de.danoeh.antennapod.core.ssl.NoV1SslSocketFactory;
 import de.danoeh.antennapod.core.storage.DBWriter;
-import de.danoeh.antennapod.core.util.Flavors;
+import de.danoeh.antennapod.net.ssl.SslClientSetup;
 import okhttp3.Cache;
-import okhttp3.CipherSuite;
-import okhttp3.ConnectionSpec;
 import okhttp3.Credentials;
 import okhttp3.HttpUrl;
 import okhttp3.JavaNetCookieJar;
@@ -21,8 +16,6 @@ import okhttp3.OkHttpClient;
 import okhttp3.Request;
 import okhttp3.Response;
 import okhttp3.internal.http.StatusLine;
-
-import javax.net.ssl.X509TrustManager;
 import java.io.File;
 import java.net.CookieManager;
 import java.net.CookiePolicy;
@@ -30,9 +23,6 @@ import java.net.HttpURLConnection;
 import java.net.InetSocketAddress;
 import java.net.Proxy;
 import java.net.SocketAddress;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -140,28 +130,7 @@ public class AntennapodHttpClient {
             }
         }
 
-        if (Flavors.FLAVOR == Flavors.FREE) {
-            // The Free flavor bundles a modern conscrypt (security provider), so CustomSslSocketFactory
-            // is only used to make sure that modern protocols (TLSv1.3 and TLSv1.2) are enabled and
-            // that old, deprecated, protocols (like SSLv3, TLSv1.0 and TLSv1.1) are disabled.
-            X509TrustManager trustManager = BackportTrustManager.create();
-            builder.sslSocketFactory(new NoV1SslSocketFactory(trustManager), trustManager);
-        } else if (Build.VERSION.SDK_INT < 21) {
-            X509TrustManager trustManager = BackportTrustManager.create();
-            builder.sslSocketFactory(new NoV1SslSocketFactory(trustManager), trustManager);
-
-            // workaround for Android 4.x for certain web sites.
-            // see: https://github.com/square/okhttp/issues/4053#issuecomment-402579554
-            List<CipherSuite> cipherSuites = new ArrayList<>(ConnectionSpec.MODERN_TLS.cipherSuites());
-            cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA);
-            cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA);
-
-            ConnectionSpec legacyTls = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
-                    .cipherSuites(cipherSuites.toArray(new CipherSuite[0]))
-                    .build();
-            builder.connectionSpecs(Arrays.asList(legacyTls, ConnectionSpec.CLEARTEXT));
-        }
-
+        SslClientSetup.installCertificates(builder);
         return builder;
     }
 
diff --git a/core/src/play/java/de/danoeh/antennapod/core/ClientConfig.java b/core/src/play/java/de/danoeh/antennapod/core/ClientConfig.java
index 0225c508a..48de7c6e1 100644
--- a/core/src/play/java/de/danoeh/antennapod/core/ClientConfig.java
+++ b/core/src/play/java/de/danoeh/antennapod/core/ClientConfig.java
@@ -2,10 +2,6 @@ package de.danoeh.antennapod.core;
 
 import android.content.Context;
 import android.util.Log;
-import com.google.android.gms.common.GoogleApiAvailability;
-import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
-import com.google.android.gms.common.GooglePlayServicesRepairableException;
-import com.google.android.gms.security.ProviderInstaller;
 import de.danoeh.antennapod.core.cast.CastManager;
 import de.danoeh.antennapod.core.preferences.PlaybackPreferences;
 import de.danoeh.antennapod.core.preferences.SleepTimerPreferences;
@@ -15,6 +11,7 @@ import de.danoeh.antennapod.core.service.download.AntennapodHttpClient;
 import de.danoeh.antennapod.core.storage.PodDBAdapter;
 import de.danoeh.antennapod.core.util.NetworkUtils;
 import de.danoeh.antennapod.core.util.gui.NotificationUtils;
+import de.danoeh.antennapod.net.ssl.SslProviderInstaller;
 
 import java.io.File;
 
@@ -48,7 +45,7 @@ public class ClientConfig {
         UserPreferences.init(context);
         UsageStatistics.init(context);
         PlaybackPreferences.init(context);
-        installSslProvider(context);
+        SslProviderInstaller.install(context);
         NetworkUtils.init(context);
         // Don't initialize Cast-related logic unless it is enabled, to avoid the unnecessary
         // Google Play Service usage.
@@ -64,15 +61,4 @@ public class ClientConfig {
         NotificationUtils.createChannels(context);
         initialized = true;
     }
-
-    private static void installSslProvider(Context context) {
-        try {
-            ProviderInstaller.installIfNeeded(context);
-        } catch (GooglePlayServicesRepairableException e) {
-            e.printStackTrace();
-            GoogleApiAvailability.getInstance().showErrorNotification(context, e.getConnectionStatusCode());
-        } catch (GooglePlayServicesNotAvailableException e) {
-            e.printStackTrace();
-        }
-    }
 }
diff --git a/net/README.md b/net/README.md
new file mode 100644
index 000000000..4d578407c
--- /dev/null
+++ b/net/README.md
@@ -0,0 +1,3 @@
+# :net
+
+This folder contains modules that directly interact with the network.
diff --git a/net/ssl/README.md b/net/ssl/README.md
new file mode 100644
index 000000000..bf01f3ab6
--- /dev/null
+++ b/net/ssl/README.md
@@ -0,0 +1,3 @@
+# :net:ssl
+
+This module provides SSL backports and security provider implementations.
diff --git a/net/ssl/build.gradle b/net/ssl/build.gradle
new file mode 100644
index 000000000..92fb6cbd9
--- /dev/null
+++ b/net/ssl/build.gradle
@@ -0,0 +1,64 @@
+apply plugin: "com.android.library"
+
+android {
+    compileSdkVersion rootProject.ext.compileSdkVersion
+
+    defaultConfig {
+        minSdkVersion rootProject.ext.minSdkVersion
+        targetSdkVersion rootProject.ext.targetSdkVersion
+
+        multiDexEnabled false
+
+        testApplicationId "de.danoeh.antennapod.core.tests"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile("proguard-android.txt")
+        }
+        debug {
+            // debug build has method count over 64k single-dex threshold.
+            // For building debug build to use on Android < 21 (pre-Android 5) devices,
+            // you need to manually change class
+            // de.danoeh.antennapod.PodcastApp to extend MultiDexApplication .
+            // See Issue #2813
+            multiDexEnabled true
+        }
+    }
+
+    flavorDimensions "market"
+    productFlavors {
+        free {
+            dimension "market"
+        }
+        play {
+            dimension "market"
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+        }
+    }
+
+    lintOptions {
+        warningsAsErrors true
+        abortOnError true
+    }
+}
+
+dependencies {
+    annotationProcessor "androidx.annotation:annotation:$annotationVersion"
+    implementation "androidx.appcompat:appcompat:$appcompatVersion"
+    implementation "com.squareup.okhttp3:okhttp:$okhttpVersion"
+
+    playImplementation "com.google.android.gms:play-services-base:$playServicesVersion"
+    freeImplementation "org.conscrypt:conscrypt-android:$conscryptVersion"
+}
diff --git a/net/ssl/src/free/java/de/danoeh/antennapod/net/ssl/SslProviderInstaller.java b/net/ssl/src/free/java/de/danoeh/antennapod/net/ssl/SslProviderInstaller.java
new file mode 100644
index 000000000..48b5690cc
--- /dev/null
+++ b/net/ssl/src/free/java/de/danoeh/antennapod/net/ssl/SslProviderInstaller.java
@@ -0,0 +1,13 @@
+package de.danoeh.antennapod.net.ssl;
+
+import android.content.Context;
+import org.conscrypt.Conscrypt;
+
+import java.security.Security;
+
+public class SslProviderInstaller {
+    public static void install(Context context) {
+        // Insert bundled conscrypt as highest security provider (overrides OS version).
+        Security.insertProviderAt(Conscrypt.newProvider(), 1);
+    }
+}
diff --git a/net/ssl/src/main/AndroidManifest.xml b/net/ssl/src/main/AndroidManifest.xml
new file mode 100644
index 000000000..2acf91510
--- /dev/null
+++ b/net/ssl/src/main/AndroidManifest.xml
@@ -0,0 +1 @@
+<manifest package="de.danoeh.antennapod.net.ssl" />
diff --git a/core/src/main/java/de/danoeh/antennapod/core/ssl/BackportCaCerts.java b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/BackportCaCerts.java
index 78c105e38..ecfc99e15 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/ssl/BackportCaCerts.java
+++ b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/BackportCaCerts.java
@@ -1,4 +1,4 @@
-package de.danoeh.antennapod.core.ssl;
+package de.danoeh.antennapod.net.ssl;
 
 public class BackportCaCerts {
     public static final String SECTIGO_USER_TRUST = "-----BEGIN CERTIFICATE-----\n"
diff --git a/core/src/main/java/de/danoeh/antennapod/core/ssl/BackportTrustManager.java b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/BackportTrustManager.java
index 81d2a0709..3a188b47a 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/ssl/BackportTrustManager.java
+++ b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/BackportTrustManager.java
@@ -1,4 +1,4 @@
-package de.danoeh.antennapod.core.ssl;
+package de.danoeh.antennapod.net.ssl;
 
 import android.util.Log;
 
diff --git a/core/src/main/java/de/danoeh/antennapod/core/ssl/CompositeX509TrustManager.java b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/CompositeX509TrustManager.java
index 7af96a492..16b2f0931 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/ssl/CompositeX509TrustManager.java
+++ b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/CompositeX509TrustManager.java
@@ -1,4 +1,4 @@
-package de.danoeh.antennapod.core.ssl;
+package de.danoeh.antennapod.net.ssl;
 
 import javax.net.ssl.X509TrustManager;
 import java.security.cert.CertificateException;
diff --git a/core/src/main/java/de/danoeh/antennapod/core/ssl/NoV1SslSocketFactory.java b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/NoV1SslSocketFactory.java
index 96a42f22d..0e31cda68 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/ssl/NoV1SslSocketFactory.java
+++ b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/NoV1SslSocketFactory.java
@@ -1,6 +1,4 @@
-package de.danoeh.antennapod.core.ssl;
-
-import de.danoeh.antennapod.core.util.Flavors;
+package de.danoeh.antennapod.net.ssl;
 
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLSocket;
@@ -22,7 +20,7 @@ public class NoV1SslSocketFactory extends SSLSocketFactory {
         try {
             SSLContext sslContext;
 
-            if (Flavors.FLAVOR == Flavors.FREE) {
+            if (BuildConfig.FLAVOR.equals("free")) {
                 // Free flavor (bundles modern conscrypt): support for TLSv1.3 is guaranteed.
                 sslContext = SSLContext.getInstance("TLSv1.3");
             } else {
@@ -84,7 +82,7 @@ public class NoV1SslSocketFactory extends SSLSocketFactory {
     }
 
     private void configureSocket(SSLSocket s) {
-        if (Flavors.FLAVOR == Flavors.FREE) {
+        if (BuildConfig.FLAVOR.equals("free")) {
             // Free flavor (bundles modern conscrypt): TLSv1.3 and modern cipher suites are
             // guaranteed. Protocols older than TLSv1.2 are now deprecated and can be disabled.
             s.setEnabledProtocols(new String[] { "TLSv1.3", "TLSv1.2" });
diff --git a/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/SslClientSetup.java b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/SslClientSetup.java
new file mode 100644
index 000000000..666010d2f
--- /dev/null
+++ b/net/ssl/src/main/java/de/danoeh/antennapod/net/ssl/SslClientSetup.java
@@ -0,0 +1,37 @@
+package de.danoeh.antennapod.net.ssl;
+
+import android.os.Build;
+import okhttp3.CipherSuite;
+import okhttp3.ConnectionSpec;
+import okhttp3.OkHttpClient;
+
+import javax.net.ssl.X509TrustManager;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class SslClientSetup {
+    public static void installCertificates(OkHttpClient.Builder builder) {
+        if (BuildConfig.FLAVOR.equals("free")) {
+            // The Free flavor bundles a modern conscrypt (security provider), so CustomSslSocketFactory
+            // is only used to make sure that modern protocols (TLSv1.3 and TLSv1.2) are enabled and
+            // that old, deprecated, protocols (like SSLv3, TLSv1.0 and TLSv1.1) are disabled.
+            X509TrustManager trustManager = BackportTrustManager.create();
+            builder.sslSocketFactory(new NoV1SslSocketFactory(trustManager), trustManager);
+        } else if (Build.VERSION.SDK_INT < 21) {
+            X509TrustManager trustManager = BackportTrustManager.create();
+            builder.sslSocketFactory(new NoV1SslSocketFactory(trustManager), trustManager);
+
+            // workaround for Android 4.x for certain web sites.
+            // see: https://github.com/square/okhttp/issues/4053#issuecomment-402579554
+            List<CipherSuite> cipherSuites = new ArrayList<>(ConnectionSpec.MODERN_TLS.cipherSuites());
+            cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA);
+            cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA);
+
+            ConnectionSpec legacyTls = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
+                    .cipherSuites(cipherSuites.toArray(new CipherSuite[0]))
+                    .build();
+            builder.connectionSpecs(Arrays.asList(legacyTls, ConnectionSpec.CLEARTEXT));
+        }
+    }
+}
diff --git a/net/ssl/src/play/java/de/danoeh/antennapod/net/ssl/SslProviderInstaller.java b/net/ssl/src/play/java/de/danoeh/antennapod/net/ssl/SslProviderInstaller.java
new file mode 100644
index 000000000..6c89df5ec
--- /dev/null
+++ b/net/ssl/src/play/java/de/danoeh/antennapod/net/ssl/SslProviderInstaller.java
@@ -0,0 +1,20 @@
+package de.danoeh.antennapod.net.ssl;
+
+import android.content.Context;
+import com.google.android.gms.common.GoogleApiAvailability;
+import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
+import com.google.android.gms.common.GooglePlayServicesRepairableException;
+import com.google.android.gms.security.ProviderInstaller;
+
+public class SslProviderInstaller {
+    public static void install(Context context) {
+        try {
+            ProviderInstaller.installIfNeeded(context);
+        } catch (GooglePlayServicesRepairableException e) {
+            e.printStackTrace();
+            GoogleApiAvailability.getInstance().showErrorNotification(context, e.getConnectionStatusCode());
+        } catch (GooglePlayServicesNotAvailableException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/settings.gradle b/settings.gradle
index 0298c7b2a..a87de1afa 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,4 +1,5 @@
 include ':app'
 include ':core'
+include ':net:ssl'
 include ':ui:app-start-intent'
 include ':ui:common'