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Camunda 7 Keycloak Identity Provider Plugin including all transitive dependencies
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.hc.core5.http2.impl.nio;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.apache.hc.core5.annotation.Internal;
import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.http.ConnectionClosedException;
import org.apache.hc.core5.http.impl.nio.BufferedData;
import org.apache.hc.core5.reactor.IOSession;
import org.apache.hc.core5.reactor.ProtocolIOSession;
import org.apache.hc.core5.util.Args;
/**
* I/O event handler for events fired by {@link ProtocolIOSession} that implements
* server side of the HTTP/2 protocol negotiation handshake.
*
* @since 5.2
*/
@Internal
public class ServerH2PrefaceHandler extends PrefaceHandlerBase {
final static byte[] PREFACE = ClientH2PrefaceHandler.PREFACE;
private final ServerH2StreamMultiplexerFactory http2StreamHandlerFactory;
private final BufferedData inBuf;
public ServerH2PrefaceHandler(
final ProtocolIOSession ioSession,
final ServerH2StreamMultiplexerFactory http2StreamHandlerFactory) {
this(ioSession, http2StreamHandlerFactory, null);
}
public ServerH2PrefaceHandler(
final ProtocolIOSession ioSession,
final ServerH2StreamMultiplexerFactory http2StreamHandlerFactory,
final FutureCallback resultCallback) {
super(ioSession, resultCallback);
this.http2StreamHandlerFactory = Args.notNull(http2StreamHandlerFactory, "HTTP/2 stream handler factory");
this.inBuf = BufferedData.allocate(1024);
}
@Override
public void connected(final IOSession session) throws IOException {
}
@Override
public void inputReady(final IOSession session, final ByteBuffer src) throws IOException {
if (src != null) {
inBuf.put(src);
}
boolean endOfStream = false;
if (inBuf.length() < PREFACE.length) {
final int bytesRead = inBuf.readFrom(session);
if (bytesRead == -1) {
endOfStream = true;
}
}
final ByteBuffer data = inBuf.data();
if (data.remaining() >= PREFACE.length) {
for (int i = 0; i < PREFACE.length; i++) {
if (data.get() != PREFACE[i]) {
throw new ProtocolNegotiationException("Unexpected HTTP/2 preface");
}
}
startProtocol(new ServerH2IOEventHandler(http2StreamHandlerFactory.create(ioSession)), data.hasRemaining() ? data : null);
} else {
if (endOfStream) {
throw new ConnectionClosedException();
}
}
}
@Override
public void outputReady(final IOSession session) throws IOException {
}
@Override
public String toString() {
return getClass().getName();
}
}