okhttp3.internal.platform.BouncyCastlePlatform.kt Maven / Gradle / Ivy
/*
* Copyright (C) 2019 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 java.security.KeyStore
import java.security.Provider
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.TrustManagerFactory
import javax.net.ssl.X509TrustManager
import okhttp3.Protocol
import org.bouncycastle.jsse.BCSSLSocket
import org.bouncycastle.jsse.provider.BouncyCastleJsseProvider
/**
* Platform using BouncyCastle if installed as the first Security Provider.
*
* Requires org.bouncycastle:bctls-jdk15on on the classpath.
*/
class BouncyCastlePlatform private constructor() : Platform() {
private val provider: Provider = BouncyCastleJsseProvider()
override fun newSSLContext(): SSLContext =
SSLContext.getInstance("TLS", provider)
override fun platformTrustManager(): X509TrustManager {
val factory = TrustManagerFactory.getInstance(
"PKIX", BouncyCastleJsseProvider.PROVIDER_NAME)
factory.init(null as KeyStore?)
val trustManagers = factory.trustManagers!!
check(trustManagers.size == 1 && trustManagers[0] is X509TrustManager) {
"Unexpected default trust managers: ${trustManagers.contentToString()}"
}
return trustManagers[0] as X509TrustManager
}
override fun trustManager(sslSocketFactory: SSLSocketFactory): X509TrustManager? =
throw UnsupportedOperationException(
"clientBuilder.sslSocketFactory(SSLSocketFactory) not supported with BouncyCastle")
override fun configureTlsExtensions(
sslSocket: SSLSocket,
hostname: String?,
protocols: List<@JvmSuppressWildcards Protocol>
) {
if (sslSocket is BCSSLSocket) {
val sslParameters = sslSocket.parameters
// Enable ALPN.
val names = alpnProtocolNames(protocols)
sslParameters.applicationProtocols = names.toTypedArray()
sslSocket.parameters = sslParameters
} else {
super.configureTlsExtensions(sslSocket, hostname, protocols)
}
}
override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
if (sslSocket is BCSSLSocket) {
when (val protocol = (sslSocket as BCSSLSocket).applicationProtocol) {
// Handles both un-configured and none selected.
null, "" -> null
else -> protocol
}
} else {
super.getSelectedProtocol(sslSocket)
}
companion object {
val isSupported: Boolean = try {
// Trigger an early exception over a fatal error, prefer a RuntimeException over Error.
Class.forName("org.bouncycastle.jsse.provider.BouncyCastleJsseProvider", false, javaClass.classLoader)
true
} catch (_: ClassNotFoundException) {
false
}
fun buildIfSupported(): BouncyCastlePlatform? = if (isSupported) BouncyCastlePlatform() else null
}
}