okhttp3.internal.platform.Android10Platform Maven / Gradle / Ivy

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/*
 * Copyright (C) 2020 Square, Inc.
 *
 * 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.platform;

import android.annotation.SuppressLint;
import android.net.ssl.SSLSockets;
import java.io.IOException;
import java.util.List;
import javax.annotation.Nullable;
import javax.net.ssl.SSLParameters;
import javax.net.ssl.SSLSocket;
import okhttp3.Protocol;
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;

/** Android 10+. */
@SuppressLint("NewApi")
class Android10Platform extends AndroidPlatform {
  Android10Platform(Class sslParametersClass) {
    super(sslParametersClass, null, null, null, null);
  }

  @SuppressLint("NewApi")
  @IgnoreJRERequirement
  @Override public void configureTlsExtensions(
      SSLSocket sslSocket, String hostname, List protocols) throws IOException {
    try {
      enableSessionTickets(sslSocket);

      SSLParameters sslParameters = sslSocket.getSSLParameters();

      // Enable ALPN.
      String[] protocolsArray = Platform.alpnProtocolNames(protocols).toArray(new String[0]);
      sslParameters.setApplicationProtocols(protocolsArray);

      sslSocket.setSSLParameters(sslParameters);
    } catch (IllegalArgumentException iae) {
      // probably java.lang.IllegalArgumentException: Invalid input to toASCII from IDN.toASCII
      throw new IOException("Android internal error", iae);
    }
  }

  private void enableSessionTickets(SSLSocket sslSocket) {
    if (SSLSockets.isSupportedSocket(sslSocket)) {
      SSLSockets.setUseSessionTickets(sslSocket, true);
    }
  }

  @IgnoreJRERequirement
  @Override public @Nullable String getSelectedProtocol(SSLSocket socket) {
    String alpnResult = socket.getApplicationProtocol();

    if (alpnResult == null || alpnResult.isEmpty()) {
      return null;
    }

    return alpnResult;
  }

  public static @Nullable Platform buildIfSupported() {
    if (!Platform.isAndroid()) {
      return null;
    }

    try {
      if (getSdkInt() >= 29) {
        Class sslParametersClass =
            Class.forName("com.android.org.conscrypt.SSLParametersImpl");

        return new Android10Platform(sslParametersClass);
      }
    } catch (ClassNotFoundException ignored) {
    }

    return null; // Not an Android 10+ runtime.
  }
}