upgrade OkHttp, add Conscrypt (#1083)

* upgrade OkHttp, add Conscrypt

* fix tests

app/build.gradle

@@ -94,8 +94,9 @@ dependencies {
     implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
     implementation 'com.squareup.retrofit2:adapter-rxjava2:2.5.0'
     implementation 'com.squareup.picasso:picasso:2.5.2'
-    implementation 'com.squareup.okhttp3:okhttp:3.12.0'
-    implementation 'com.squareup.okhttp3:logging-interceptor:3.12.0'
+    implementation 'com.squareup.okhttp3:okhttp:3.13.1'
+    implementation 'com.squareup.okhttp3:logging-interceptor:3.13.1'
+    implementation "org.conscrypt:conscrypt-android:2.0.0"
     implementation 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'
     implementation 'com.github.connyduck:sparkbutton:2.0.0'
     implementation 'com.github.chrisbanes:PhotoView:2.3.0'

app/src/main/java/com/keylesspalace/tusky/TuskyApplication.java

@@ -32,6 +32,10 @@ import com.keylesspalace.tusky.util.EmojiCompatFont;
 import com.keylesspalace.tusky.util.NotificationPullJobCreator;
 import com.squareup.picasso.Picasso;
 
+import org.conscrypt.Conscrypt;
+
+import java.security.Security;
+
 import javax.inject.Inject;
 
 import dagger.android.AndroidInjector;
@@ -62,6 +66,8 @@ public class TuskyApplication extends Application implements HasActivityInjector
     public void onCreate() {
         super.onCreate();
 
+        initSecurityProvider();
+
         appDatabase = Room.databaseBuilder(getApplicationContext(), AppDatabase.class, "tuskyDB")
                 .allowMainThreadQueries()
                 .addMigrations(AppDatabase.MIGRATION_2_3, AppDatabase.MIGRATION_3_4, AppDatabase.MIGRATION_4_5,
@@ -93,6 +99,10 @@ public class TuskyApplication extends Application implements HasActivityInjector
 
     }
 
+    protected void initSecurityProvider() {
+        Security.insertProviderAt(Conscrypt.newProvider(), 1);
+    }
+
     /**
      * This method will load the EmojiCompat font which has been selected.
      * If this font does not work or if the user hasn't selected one (yet), it will use a

app/src/main/java/com/keylesspalace/tusky/util/OkHttpUtils.java

@@ -19,49 +19,21 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Build;
 import android.preference.PreferenceManager;
-import androidx.annotation.NonNull;
-import android.util.Log;
 
 import com.keylesspalace.tusky.BuildConfig;
 
 import java.net.InetSocketAddress;
 import java.net.Proxy;
-import java.security.KeyManagementException;
-import java.security.KeyStore;
-import java.security.KeyStoreException;
-import java.security.NoSuchAlgorithmException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
 import java.util.concurrent.TimeUnit;
 
-import javax.net.ssl.SSLContext;
-import javax.net.ssl.SSLSocketFactory;
-import javax.net.ssl.TrustManager;
-import javax.net.ssl.TrustManagerFactory;
-import javax.net.ssl.X509TrustManager;
-
+import androidx.annotation.NonNull;
 import okhttp3.Cache;
-import okhttp3.ConnectionSpec;
 import okhttp3.Interceptor;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
 
 public class OkHttpUtils {
-    private static final String TAG = "OkHttpUtils"; // logging tag
 
-    /**
-     * Makes a Builder with the maximum range of TLS versions and cipher suites enabled.
-     * <p>
-     * It first tries the "approved" list of cipher suites given in OkHttp (the default in
-     * ConnectionSpec.MODERN_TLS) and if that doesn't work falls back to the set of ALL enabled,
-     * then falls back to plain http.
-     * <p>
-     * API level 24 has a regression in elliptic curves where it only supports secp256r1, so this
-     * first tries a fallback without elliptic curves at all, and then tries them after.
-     * <p>
-     * TLS 1.1 and 1.2 have to be manually enabled on API levels 16-20.
-     */
     @NonNull
     public static OkHttpClient.Builder getCompatibleClientBuilder(@NonNull Context context) {
 
@@ -77,25 +49,13 @@ public class OkHttpUtils {
             httpPort = -1;
         }
 
-        ConnectionSpec fallback = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
-                .allEnabledCipherSuites()
-                .supportsTlsExtensions(true)
-                .build();
-
-        List<ConnectionSpec> specList = new ArrayList<>();
-        specList.add(ConnectionSpec.MODERN_TLS);
-        addNougatFixConnectionSpec(specList);
-        specList.add(fallback);
-        specList.add(ConnectionSpec.CLEARTEXT);
-
         int cacheSize = 25*1024*1024; // 25 MiB
 
         OkHttpClient.Builder builder = new OkHttpClient.Builder()
                 .addInterceptor(getUserAgentInterceptor())
                 .readTimeout(30, TimeUnit.SECONDS)
                 .writeTimeout(30, TimeUnit.SECONDS)
-                .cache(new Cache(context.getCacheDir(), cacheSize))
-                .connectionSpecs(specList);
+                .cache(new Cache(context.getCacheDir(), cacheSize));
 
         if (httpProxyEnabled && !httpServer.isEmpty() && (httpPort > 0) && (httpPort < 65535)) {
             InetSocketAddress address = InetSocketAddress.createUnresolved(httpServer, httpPort);
@@ -121,47 +81,6 @@ public class OkHttpUtils {
         };
     }
 
-    /**
-     * Android version Nougat has a regression where elliptic curve cipher suites are supported, but
-     * only the curve secp256r1 is allowed. So, first it's best to just disable all elliptic
-     * ciphers, try the connection, and fall back to the all cipher suites enabled list after.
-     */
-    private static void addNougatFixConnectionSpec(List<ConnectionSpec> specList) {
-        if (Build.VERSION.SDK_INT != Build.VERSION_CODES.N) {
-            return;
-        }
-        SSLSocketFactory socketFactory;
-        try {
-            TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
-                    TrustManagerFactory.getDefaultAlgorithm());
-            trustManagerFactory.init((KeyStore) null);
-            TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
-            if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
-                throw new IllegalStateException("Unexpected default trust managers:"
-                        + Arrays.toString(trustManagers));
-            }
-
-            X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
-
-            SSLContext sslContext = SSLContext.getInstance("TLS");
-            sslContext.init(null, new TrustManager[] { trustManager }, null);
-            socketFactory = sslContext.getSocketFactory();
-        } catch (NoSuchAlgorithmException|KeyStoreException|KeyManagementException e) {
-            Log.e(TAG, "Failed obtaining the SSL socket factory.");
-            return;
-        }
-        String[] cipherSuites = socketFactory.getDefaultCipherSuites();
-        ArrayList<String> allowedList = new ArrayList<>();
-        for (String suite : cipherSuites) {
-            if (!suite.contains("ECDH")) {
-                allowedList.add(suite);
-            }
-        }
-        ConnectionSpec spec = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
-                .cipherSuites(allowedList.toArray(new String[0]))
-                .supportsTlsExtensions(true)
-                .build();
-        specList.add(spec);
-    }
-
 }
+
+

app/src/test/java/com/keylesspalace/tusky/FakeTuskyApplication.kt

@@ -8,6 +8,10 @@ class FakeTuskyApplication : TuskyApplication() {
 
     lateinit var locator: ServiceLocator
 
+    override fun initSecurityProvider() {
+        // No-op
+    }
+
     override fun initAppInjector() {
         // No-op
     }