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AbstractPostgresSSLHandlerAdapter.java
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AbstractPostgresSSLHandlerAdapter.java
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/*
* Copyright 2017 the original author or authors.
*
* 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 io.r2dbc.postgresql.client;
import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.ssl.SslHandler;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;
import io.r2dbc.postgresql.api.ErrorDetails;
import io.r2dbc.postgresql.api.PostgresqlException;
import io.r2dbc.spi.R2dbcPermissionDeniedException;
import reactor.core.publisher.Mono;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLParameters;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.concurrent.CompletableFuture;
abstract class AbstractPostgresSSLHandlerAdapter extends ChannelInboundHandlerAdapter implements GenericFutureListener<Future<Channel>> {
private final SSLConfig sslConfig;
private final SSLEngine sslEngine;
private final SslHandler sslHandler;
private final CompletableFuture<Void> handshakeFuture;
AbstractPostgresSSLHandlerAdapter(ByteBufAllocator alloc, SocketAddress socketAddress, SSLConfig sslConfig) {
this.sslConfig = sslConfig;
SSLEngine sslEngine = sslConfig.getSslProvider().get().newEngine(alloc);
SSLParameters sslParameters = sslConfig.getSslParametersFactory().apply(socketAddress);
sslEngine.setSSLParameters(sslParameters);
this.sslEngine = sslConfig.getSslEngineCustomizer().apply(sslEngine);
this.handshakeFuture = new CompletableFuture<>();
this.sslHandler = new SslHandler(this.sslEngine);
this.sslHandler.handshakeFuture().addListener(this);
}
@Override
public void operationComplete(Future<Channel> future) throws Exception {
if (!future.isSuccess()) {
completeHandshakeExceptionally(future.cause());
return;
}
if (this.sslConfig.getSslMode() != SSLMode.VERIFY_FULL) {
completeHandshake();
return;
}
Channel channel = future.get();
InetSocketAddress socketAddress = (InetSocketAddress) channel.remoteAddress();
String hostName = socketAddress.getHostName();
if (this.sslConfig.getHostnameVerifier().verify(hostName, this.sslEngine.getSession())) {
completeHandshake();
} else {
completeHandshakeExceptionally(new PostgresqlSslException(String.format("The hostname '%s' could not be verified.", socketAddress.getAddress().toString())));
}
}
void completeHandshakeExceptionally(Throwable ex) {
this.handshakeFuture.completeExceptionally(ex);
}
boolean completeHandshake() {
return this.handshakeFuture.complete(null);
}
Mono<Void> getHandshake() {
return Mono.fromFuture(this.handshakeFuture);
}
SslHandler getSslHandler() {
return this.sslHandler;
}
/**
* Postgres-specific {@link R2dbcPermissionDeniedException}.
*/
static final class PostgresqlSslException extends R2dbcPermissionDeniedException implements PostgresqlException {
private final ErrorDetails errorDetails;
PostgresqlSslException(String reason) {
super(reason, ReactorNettyClient.CONNECTION_FAILURE, 0, (String) null);
this.errorDetails = ErrorDetails.fromCodeAndMessage(ReactorNettyClient.CONNECTION_FAILURE, reason);
}
@Override
public ErrorDetails getErrorDetails() {
return this.errorDetails;
}
}
}