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The Reactive PostgreSQL Client
/*
* Copyright (C) 2017 Julien Viet
*
* 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.vertx.pgclient.impl;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.DecoderException;
import io.vertx.core.AsyncResult;
import io.vertx.core.Handler;
import io.vertx.core.Promise;
import io.vertx.pgclient.impl.codec.PgProtocolConstants;
import io.vertx.sqlclient.impl.SocketConnectionBase;
import io.vertx.core.VertxException;
public class InitiateSslHandler extends ChannelInboundHandlerAdapter {
private static final int code = 80877103;
private final SocketConnectionBase conn;
private final Promise upgradePromise;
public InitiateSslHandler(SocketConnectionBase conn, Promise upgradePromise) {
this.conn = conn;
this.upgradePromise = upgradePromise;
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
ByteBuf byteBuf = Unpooled.buffer();
byteBuf.writeInt(0);
byteBuf.writeInt(code);
// out.writeInt(0x12345679);
byteBuf.setInt(0, byteBuf.writerIndex());
ctx.writeAndFlush(byteBuf, ctx.voidPromise());
super.channelActive(ctx);
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
// This must be a single byte buffer - after that follow the SSL handshake
ByteBuf byteBuf = (ByteBuf) msg;
byte b = byteBuf.getByte(0);
byteBuf.release();
switch (b) {
case PgProtocolConstants.MESSAGE_TYPE_SSL_YES: {
Handler handler = o -> {
if (o instanceof AsyncResult) {
AsyncResult res = (AsyncResult) o;
if (res.failed()) {
// Connection close will fail the promise
return;
}
}
ctx.pipeline().remove(this);
upgradePromise.complete();
};
conn.socket().upgradeToSsl(handler);
break;
}
case PgProtocolConstants.MESSAGE_TYPE_SSL_NO: {
upgradePromise.fail(new Exception("Postgres Server does not handle SSL connection"));
break;
}
default:
upgradePromise.fail(new Exception("Invalid SSL connection message"));
break;
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (cause instanceof DecoderException) {
DecoderException err = (DecoderException) cause;
cause = err.getCause();
}
upgradePromise.tryFail(cause);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
super.channelInactive(ctx);
// Work around for https://github.com/eclipse-vertx/vert.x/issues/2748
upgradePromise.tryFail(new VertxException("SSL handshake failed", true));
}
}
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