/*
* Copyright 2017 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.handler.ssl;
import io.netty.util.internal.
PlatformDependent;
import javax.net.ssl.
SSLEngine;
import java.lang.reflect.
InvocationTargetException;
import java.lang.reflect.
Method;
/**
* Contains methods that can be used to detect if conscrypt is usable.
*/
final class
Conscrypt {
// This class exists to avoid loading other conscrypt related classes using features only available in JDK8+,
// because we need to maintain JDK6+ runtime compatibility.
private static final
Method IS_CONSCRYPT_SSLENGINE =
loadIsConscryptEngine();
private static
Method loadIsConscryptEngine() {
try {
Class<?>
conscryptClass =
Class.
forName("org.conscrypt.Conscrypt", true,
ConscryptAlpnSslEngine.class.
getClassLoader());
return
conscryptClass.
getMethod("isConscrypt",
SSLEngine.class);
} catch (
Throwable ignore) {
// Conscrypt was not loaded.
return null;
}
}
/**
* Indicates whether or not conscrypt is available on the current system.
*/
static boolean
isAvailable() {
return
IS_CONSCRYPT_SSLENGINE != null &&
PlatformDependent.
javaVersion() >= 8;
}
static boolean
isEngineSupported(
SSLEngine engine) {
return
isAvailable() &&
isConscryptEngine(
engine);
}
private static boolean
isConscryptEngine(
SSLEngine engine) {
try {
return (
Boolean)
IS_CONSCRYPT_SSLENGINE.
invoke(null,
engine);
} catch (
IllegalAccessException ignore) {
return false;
} catch (
InvocationTargetException ex) {
throw new
RuntimeException(
ex);
}
}
private
Conscrypt() { }
}