io.undertow.websockets.spi.AsyncWebSocketHttpServerExchange Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).
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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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.undertow.websockets.spi;

import io.undertow.UndertowLogger;
import io.undertow.io.IoCallback;
import io.undertow.io.Sender;
import io.undertow.security.api.SecurityContext;
import io.undertow.security.idm.Account;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.HttpUpgradeListener;
import io.undertow.server.session.SessionConfig;
import io.undertow.server.session.SessionManager;
import io.undertow.util.AttachmentKey;
import io.undertow.util.HeaderMap;
import io.undertow.util.HttpString;
import io.undertow.websockets.core.WebSocketChannel;
import org.xnio.ChannelListener;
import org.xnio.FinishedIoFuture;
import org.xnio.FutureResult;
import org.xnio.IoFuture;
import org.xnio.IoUtils;
import org.xnio.OptionMap;
import io.undertow.connector.ByteBufferPool;
import io.undertow.connector.PooledByteBuffer;
import org.xnio.channels.StreamSourceChannel;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.security.Principal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Deque;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

/**
 * @author Stuart Douglas
 */
public class AsyncWebSocketHttpServerExchange implements WebSocketHttpExchange {

    private final HttpServerExchange exchange;
    private Sender sender;
    private final Set peerConnections;

    public AsyncWebSocketHttpServerExchange(final HttpServerExchange exchange, Set peerConnections) {
        this.exchange = exchange;
        this.peerConnections = peerConnections;
    }


    @Override
    public  void putAttachment(final AttachmentKey key, final T value) {
        exchange.putAttachment(key, value);
    }

    @Override
    public  T getAttachment(final AttachmentKey key) {
        return exchange.getAttachment(key);
    }

    @Override
    public String getRequestHeader(final String headerName) {
        return exchange.getRequestHeaders().getFirst(HttpString.tryFromString(headerName));
    }

    @Override
    public Map> getRequestHeaders() {
        Map> headers = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
        for (final HttpString header : exchange.getRequestHeaders().getHeaderNames()) {
            headers.put(header.toString(), new ArrayList<>(exchange.getRequestHeaders().get(header)));
        }
        return Collections.unmodifiableMap(headers);
    }

    @Override
    public String getResponseHeader(final String headerName) {
        return exchange.getResponseHeaders().getFirst(HttpString.tryFromString(headerName));
    }

    @Override
    public Map> getResponseHeaders() {
        Map> headers = new HashMap<>();
        for (final HttpString header : exchange.getResponseHeaders().getHeaderNames()) {
            headers.put(header.toString(), new ArrayList<>(exchange.getResponseHeaders().get(header)));
        }
        return Collections.unmodifiableMap(headers);
    }

    @Override
    public void setResponseHeaders(final Map> headers) {
        HeaderMap map = exchange.getRequestHeaders();
        map.clear();
        for (Map.Entry> header : headers.entrySet()) {
            map.addAll(HttpString.tryFromString(header.getKey()), header.getValue());
        }
    }

    @Override
    public void setResponseHeader(final String headerName, final String headerValue) {
        exchange.getResponseHeaders().put(HttpString.tryFromString(headerName), headerValue);
    }

    @Override
    public void upgradeChannel(final HttpUpgradeListener upgradeCallback) {
        exchange.upgradeChannel(upgradeCallback);
    }

    @Override
    public IoFuture sendData(final ByteBuffer data) {
        if (sender == null) {
            this.sender = exchange.getResponseSender();
        }
        final FutureResult future = new FutureResult<>();
        sender.send(data, new IoCallback() {
            @Override
            public void onComplete(final HttpServerExchange exchange, final Sender sender) {
                future.setResult(null);
            }

            @Override
            public void onException(final HttpServerExchange exchange, final Sender sender, final IOException exception) {
                UndertowLogger.REQUEST_IO_LOGGER.ioException(exception);
                future.setException(exception);

            }
        });
        return future.getIoFuture();
    }

    @Override
    public IoFuture readRequestData() {
        final ByteArrayOutputStream data = new ByteArrayOutputStream();
        final PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
        final ByteBuffer buffer = pooled.getBuffer();
        final StreamSourceChannel channel = exchange.getRequestChannel();
        int res;
        for (; ; ) {
            try {
                res = channel.read(buffer);
                if (res == -1) {
                    return new FinishedIoFuture<>(data.toByteArray());
                } else if (res == 0) {
                    //callback
                    final FutureResult future = new FutureResult<>();
                    channel.getReadSetter().set(new ChannelListener() {
                        @Override
                        public void handleEvent(final StreamSourceChannel channel) {
                            int res;
                            try {
                                res = channel.read(buffer);
                                if (res == -1) {
                                    future.setResult(data.toByteArray());
                                    channel.suspendReads();
                                    return;
                                } else if (res == 0) {
                                    return;
                                } else {
                                    buffer.flip();
                                    while (buffer.hasRemaining()) {
                                        data.write(buffer.get());
                                    }
                                    buffer.clear();
                                }

                            } catch (IOException e) {
                                future.setException(e);
                            }
                        }
                    });
                    channel.resumeReads();
                    return future.getIoFuture();
                } else {
                    buffer.flip();
                    while (buffer.hasRemaining()) {
                        data.write(buffer.get());
                    }
                    buffer.clear();
                }

            } catch (IOException e) {
                final FutureResult future = new FutureResult<>();
                future.setException(e);
                return future.getIoFuture();
            }
        }


    }

    @Override
    public void endExchange() {
        exchange.endExchange();
    }

    @Override
    public void close() {
        try {
            exchange.endExchange();
        } finally {
            IoUtils.safeClose(exchange.getConnection());
        }
    }

    @Override
    public String getRequestScheme() {
        return exchange.getRequestScheme();
    }

    @Override
    public String getRequestURI() {
        String q = exchange.getQueryString();
        if (q == null || q.isEmpty()) {
            return exchange.getRequestURI();
        } else {
            return exchange.getRequestURI() + "?" + q;
        }
    }

    @Override
    public ByteBufferPool getBufferPool() {
        return exchange.getConnection().getByteBufferPool();
    }

    @Override
    public String getQueryString() {
        return exchange.getQueryString();
    }

    @Override
    public Object getSession() {
        SessionManager sm = exchange.getAttachment(SessionManager.ATTACHMENT_KEY);
        SessionConfig sessionCookieConfig = exchange.getAttachment(SessionConfig.ATTACHMENT_KEY);
        if(sm != null && sessionCookieConfig != null) {
            return sm.getSession(exchange, sessionCookieConfig);
        }
        return null;
    }

    @Override
    public Map> getRequestParameters() {
        Map> params = new HashMap<>();
        for (Map.Entry> param : exchange.getQueryParameters().entrySet()) {
            params.put(param.getKey(), new ArrayList<>(param.getValue()));
        }
        return params;
    }

    @Override
    public Principal getUserPrincipal() {
        SecurityContext sc = exchange.getSecurityContext();
        if(sc == null) {
            return null;
        }
        Account authenticatedAccount = sc.getAuthenticatedAccount();
        if(authenticatedAccount == null) {
            return null;
        }
        return authenticatedAccount.getPrincipal();
    }

    @Override
    public boolean isUserInRole(String role) {
        SecurityContext sc = exchange.getSecurityContext();
        if(sc == null) {
            return false;
        }
        Account authenticatedAccount = sc.getAuthenticatedAccount();
        if(authenticatedAccount == null) {
            return false;
        }
        return authenticatedAccount.getRoles().contains(role);
    }

    @Override
    public Set getPeerConnections() {
        return peerConnections;
    }

    @Override
    public OptionMap getOptions() {
        return exchange.getConnection().getUndertowOptions();
    }
}