okhttp3.internal.platform.AndroidPlatform Maven / Gradle / Ivy
/*
* Copyright (C) 2016 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.util.Log;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.List;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.X509TrustManager;
import okhttp3.Protocol;
import okhttp3.internal.Util;
import okhttp3.internal.tls.CertificateChainCleaner;
/** Android 2.3 or better. */
class AndroidPlatform extends Platform {
private static final int MAX_LOG_LENGTH = 4000;
private final Class sslParametersClass;
private final OptionalMethod setUseSessionTickets;
private final OptionalMethod setHostname;
// Non-null on Android 5.0+.
private final OptionalMethod getAlpnSelectedProtocol;
private final OptionalMethod setAlpnProtocols;
public AndroidPlatform(Class sslParametersClass, OptionalMethod setUseSessionTickets,
OptionalMethod setHostname, OptionalMethod getAlpnSelectedProtocol,
OptionalMethod setAlpnProtocols) {
this.sslParametersClass = sslParametersClass;
this.setUseSessionTickets = setUseSessionTickets;
this.setHostname = setHostname;
this.getAlpnSelectedProtocol = getAlpnSelectedProtocol;
this.setAlpnProtocols = setAlpnProtocols;
}
@Override public void connectSocket(Socket socket, InetSocketAddress address,
int connectTimeout) throws IOException {
try {
socket.connect(address, connectTimeout);
} catch (AssertionError e) {
if (Util.isAndroidGetsocknameError(e)) throw new IOException(e);
throw e;
} catch (SecurityException e) {
// Before android 4.3, socket.connect could throw a SecurityException
// if opening a socket resulted in an EACCES error.
IOException ioException = new IOException("Exception in connect");
ioException.initCause(e);
throw ioException;
}
}
@Override public X509TrustManager trustManager(SSLSocketFactory sslSocketFactory) {
Object context = readFieldOrNull(sslSocketFactory, sslParametersClass, "sslParameters");
if (context == null) {
// If that didn't work, try the Google Play Services SSL provider before giving up. This
// must be loaded by the SSLSocketFactory's class loader.
try {
Class gmsSslParametersClass = Class.forName(
"com.google.android.gms.org.conscrypt.SSLParametersImpl", false,
sslSocketFactory.getClass().getClassLoader());
context = readFieldOrNull(sslSocketFactory, gmsSslParametersClass, "sslParameters");
} catch (ClassNotFoundException e) {
return super.trustManager(sslSocketFactory);
}
}
X509TrustManager x509TrustManager = readFieldOrNull(
context, X509TrustManager.class, "x509TrustManager");
if (x509TrustManager != null) return x509TrustManager;
return readFieldOrNull(context, X509TrustManager.class, "trustManager");
}
@Override public void configureTlsExtensions(
SSLSocket sslSocket, String hostname, List protocols) {
// Enable SNI and session tickets.
if (hostname != null) {
setUseSessionTickets.invokeOptionalWithoutCheckedException(sslSocket, true);
setHostname.invokeOptionalWithoutCheckedException(sslSocket, hostname);
}
// Enable ALPN.
if (setAlpnProtocols != null && setAlpnProtocols.isSupported(sslSocket)) {
Object[] parameters = {concatLengthPrefixed(protocols)};
setAlpnProtocols.invokeWithoutCheckedException(sslSocket, parameters);
}
}
@Override public String getSelectedProtocol(SSLSocket socket) {
if (getAlpnSelectedProtocol == null) return null;
if (!getAlpnSelectedProtocol.isSupported(socket)) return null;
byte[] alpnResult = (byte[]) getAlpnSelectedProtocol.invokeWithoutCheckedException(socket);
return alpnResult != null ? new String(alpnResult, Util.UTF_8) : null;
}
@Override public void log(int level, String message, Throwable t) {
int logLevel = level == WARN ? Log.WARN : Log.DEBUG;
if (t != null) message = message + '\n' + Log.getStackTraceString(t);
// Split by line, then ensure each line can fit into Log's maximum length.
for (int i = 0, length = message.length(); i < length; i++) {
int newline = message.indexOf('\n', i);
newline = newline != -1 ? newline : length;
do {
int end = Math.min(newline, i + MAX_LOG_LENGTH);
Log.println(logLevel, "OkHttp", message.substring(i, end));
i = end;
} while (i < newline);
}
}
@Override public boolean isCleartextTrafficPermitted(String hostname) {
try {
Class networkPolicyClass = Class.forName("android.security.NetworkSecurityPolicy");
Method getInstanceMethod = networkPolicyClass.getMethod("getInstance");
Object networkSecurityPolicy = getInstanceMethod.invoke(null);
Method isCleartextTrafficPermittedMethod = networkPolicyClass
.getMethod("isCleartextTrafficPermitted", String.class);
return (boolean) isCleartextTrafficPermittedMethod.invoke(networkSecurityPolicy, hostname);
} catch (ClassNotFoundException | NoSuchMethodException e) {
return super.isCleartextTrafficPermitted(hostname);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
throw new AssertionError();
}
}
public CertificateChainCleaner buildCertificateChainCleaner(X509TrustManager trustManager) {
try {
Class extensionsClass = Class.forName("android.net.http.X509TrustManagerExtensions");
Constructor constructor = extensionsClass.getConstructor(X509TrustManager.class);
Object extensions = constructor.newInstance(trustManager);
Method checkServerTrusted = extensionsClass.getMethod(
"checkServerTrusted", X509Certificate[].class, String.class, String.class);
return new AndroidCertificateChainCleaner(extensions, checkServerTrusted);
} catch (Exception e) {
return super.buildCertificateChainCleaner(trustManager);
}
}
public static Platform buildIfSupported() {
// Attempt to find Android 2.3+ APIs.
try {
Class sslParametersClass;
try {
sslParametersClass = Class.forName("com.android.org.conscrypt.SSLParametersImpl");
} catch (ClassNotFoundException e) {
// Older platform before being unbundled.
sslParametersClass = Class.forName(
"org.apache.harmony.xnet.provider.jsse.SSLParametersImpl");
}
OptionalMethod setUseSessionTickets = new OptionalMethod<>(
null, "setUseSessionTickets", boolean.class);
OptionalMethod setHostname = new OptionalMethod<>(
null, "setHostname", String.class);
OptionalMethod getAlpnSelectedProtocol = null;
OptionalMethod setAlpnProtocols = null;
// Attempt to find Android 5.0+ APIs.
try {
Class.forName("android.net.Network"); // Arbitrary class added in Android 5.0.
getAlpnSelectedProtocol = new OptionalMethod<>(byte[].class, "getAlpnSelectedProtocol");
setAlpnProtocols = new OptionalMethod<>(null, "setAlpnProtocols", byte[].class);
} catch (ClassNotFoundException ignored) {
}
return new AndroidPlatform(sslParametersClass, setUseSessionTickets, setHostname,
getAlpnSelectedProtocol, setAlpnProtocols);
} catch (ClassNotFoundException ignored) {
// This isn't an Android runtime.
}
return null;
}
/**
* X509TrustManagerExtensions was added to Android in API 17 (Android 4.2, released in late 2012).
* This is the best way to get a clean chain on Android because it uses the same code as the TLS
* handshake.
*/
static final class AndroidCertificateChainCleaner extends CertificateChainCleaner {
private final Object x509TrustManagerExtensions;
private final Method checkServerTrusted;
AndroidCertificateChainCleaner(Object x509TrustManagerExtensions, Method checkServerTrusted) {
this.x509TrustManagerExtensions = x509TrustManagerExtensions;
this.checkServerTrusted = checkServerTrusted;
}
@SuppressWarnings({"unchecked", "SuspiciousToArrayCall"}) // Reflection on List.
@Override public List clean(List chain, String hostname)
throws SSLPeerUnverifiedException {
try {
X509Certificate[] certificates = chain.toArray(new X509Certificate[chain.size()]);
return (List) checkServerTrusted.invoke(
x509TrustManagerExtensions, certificates, "RSA", hostname);
} catch (InvocationTargetException e) {
SSLPeerUnverifiedException exception = new SSLPeerUnverifiedException(e.getMessage());
exception.initCause(e);
throw exception;
} catch (IllegalAccessException e) {
throw new AssertionError(e);
}
}
}
}
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