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690 lines
24 KiB
Java
690 lines
24 KiB
Java
/*
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* Copyright 2005-2008 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.net.httpserver;
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import java.net.*;
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import java.io.*;
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import java.nio.*;
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import java.security.*;
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import java.nio.channels.*;
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import java.util.*;
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import java.util.concurrent.*;
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import java.util.logging.Logger;
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import java.util.logging.Level;
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import javax.net.ssl.*;
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import com.sun.net.httpserver.*;
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import com.sun.net.httpserver.spi.*;
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/**
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* Provides implementation for both HTTP and HTTPS
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*/
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class ServerImpl implements TimeSource {
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private String protocol;
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private boolean https;
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private Executor executor;
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private HttpsConfigurator httpsConfig;
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private SSLContext sslContext;
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private ContextList contexts;
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private InetSocketAddress address;
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private ServerSocketChannel schan;
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private Selector selector;
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private SelectionKey listenerKey;
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private Set<HttpConnection> idleConnections;
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private Set<HttpConnection> allConnections;
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private List<Event> events;
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private Object lolock = new Object();
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private volatile boolean finished = false;
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private volatile boolean terminating = false;
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private boolean bound = false;
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private boolean started = false;
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private volatile long time; /* current time */
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private volatile long ticks; /* number of clock ticks since server started */
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private HttpServer wrapper;
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final static int CLOCK_TICK = ServerConfig.getClockTick();
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final static long IDLE_INTERVAL = ServerConfig.getIdleInterval();
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final static int MAX_IDLE_CONNECTIONS = ServerConfig.getMaxIdleConnections();
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private Timer timer;
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private Logger logger;
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ServerImpl (
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HttpServer wrapper, String protocol, InetSocketAddress addr, int backlog
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) throws IOException {
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this.protocol = protocol;
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this.wrapper = wrapper;
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this.logger = Logger.getLogger ("com.sun.net.httpserver");
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https = protocol.equalsIgnoreCase ("https");
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this.address = addr;
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contexts = new ContextList();
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schan = ServerSocketChannel.open();
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if (addr != null) {
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ServerSocket socket = schan.socket();
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socket.bind (addr, backlog);
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bound = true;
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}
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selector = Selector.open ();
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schan.configureBlocking (false);
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listenerKey = schan.register (selector, SelectionKey.OP_ACCEPT);
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dispatcher = new Dispatcher();
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idleConnections = Collections.synchronizedSet (new HashSet<HttpConnection>());
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allConnections = Collections.synchronizedSet (new HashSet<HttpConnection>());
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time = System.currentTimeMillis();
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timer = new Timer ("server-timer", true);
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timer.schedule (new ServerTimerTask(), CLOCK_TICK, CLOCK_TICK);
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events = new LinkedList<Event>();
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logger.config ("HttpServer created "+protocol+" "+ addr);
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}
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public void bind (InetSocketAddress addr, int backlog) throws IOException {
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if (bound) {
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throw new BindException ("HttpServer already bound");
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}
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if (addr == null) {
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throw new NullPointerException ("null address");
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}
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ServerSocket socket = schan.socket();
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socket.bind (addr, backlog);
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bound = true;
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}
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public void start () {
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if (!bound || started || finished) {
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throw new IllegalStateException ("server in wrong state");
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}
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if (executor == null) {
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executor = new DefaultExecutor();
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}
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Thread t = new Thread (dispatcher);
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started = true;
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t.start();
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}
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public void setExecutor (Executor executor) {
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if (started) {
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throw new IllegalStateException ("server already started");
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}
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this.executor = executor;
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}
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private static class DefaultExecutor implements Executor {
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public void execute (Runnable task) {
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task.run();
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}
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}
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public Executor getExecutor () {
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return executor;
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}
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public void setHttpsConfigurator (HttpsConfigurator config) {
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if (config == null) {
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throw new NullPointerException ("null HttpsConfigurator");
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}
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if (started) {
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throw new IllegalStateException ("server already started");
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}
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this.httpsConfig = config;
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sslContext = config.getSSLContext();
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}
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public HttpsConfigurator getHttpsConfigurator () {
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return httpsConfig;
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}
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public void stop (int delay) {
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if (delay < 0) {
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throw new IllegalArgumentException ("negative delay parameter");
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}
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terminating = true;
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try { schan.close(); } catch (IOException e) {}
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selector.wakeup();
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long latest = System.currentTimeMillis() + delay * 1000;
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while (System.currentTimeMillis() < latest) {
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delay();
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if (finished) {
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break;
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}
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}
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finished = true;
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selector.wakeup();
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synchronized (allConnections) {
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for (HttpConnection c : allConnections) {
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c.close();
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}
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}
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allConnections.clear();
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idleConnections.clear();
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timer.cancel();
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}
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Dispatcher dispatcher;
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public synchronized HttpContextImpl createContext (String path, HttpHandler handler) {
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if (handler == null || path == null) {
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throw new NullPointerException ("null handler, or path parameter");
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}
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HttpContextImpl context = new HttpContextImpl (protocol, path, handler, this);
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contexts.add (context);
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logger.config ("context created: " + path);
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return context;
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}
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public synchronized HttpContextImpl createContext (String path) {
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if (path == null) {
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throw new NullPointerException ("null path parameter");
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}
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HttpContextImpl context = new HttpContextImpl (protocol, path, null, this);
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contexts.add (context);
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logger.config ("context created: " + path);
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return context;
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}
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public synchronized void removeContext (String path) throws IllegalArgumentException {
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if (path == null) {
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throw new NullPointerException ("null path parameter");
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}
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contexts.remove (protocol, path);
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logger.config ("context removed: " + path);
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}
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public synchronized void removeContext (HttpContext context) throws IllegalArgumentException {
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if (!(context instanceof HttpContextImpl)) {
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throw new IllegalArgumentException ("wrong HttpContext type");
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}
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contexts.remove ((HttpContextImpl)context);
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logger.config ("context removed: " + context.getPath());
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}
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public InetSocketAddress getAddress() {
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return (InetSocketAddress)schan.socket().getLocalSocketAddress();
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}
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Selector getSelector () {
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return selector;
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}
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void addEvent (Event r) {
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synchronized (lolock) {
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events.add (r);
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selector.wakeup();
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}
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}
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int resultSize () {
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synchronized (lolock) {
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return events.size ();
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}
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}
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/* main server listener task */
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class Dispatcher implements Runnable {
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private void handleEvent (Event r) {
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ExchangeImpl t = r.exchange;
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HttpConnection c = t.getConnection();
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try {
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if (r instanceof WriteFinishedEvent) {
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int exchanges = endExchange();
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if (terminating && exchanges == 0) {
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finished = true;
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}
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SocketChannel chan = c.getChannel();
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LeftOverInputStream is = t.getOriginalInputStream();
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if (!is.isEOF()) {
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t.close = true;
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}
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if (t.close || idleConnections.size() >= MAX_IDLE_CONNECTIONS) {
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c.close();
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allConnections.remove (c);
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} else {
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if (is.isDataBuffered()) {
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/* don't re-enable the interestops, just handle it */
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handle (c.getChannel(), c);
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} else {
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/* re-enable interestops */
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SelectionKey key = c.getSelectionKey();
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if (key.isValid()) {
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key.interestOps (
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key.interestOps()|SelectionKey.OP_READ
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);
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}
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c.time = getTime() + IDLE_INTERVAL;
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idleConnections.add (c);
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}
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}
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}
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} catch (IOException e) {
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logger.log (
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Level.FINER, "Dispatcher (1)", e
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);
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c.close();
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}
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}
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public void run() {
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while (!finished) {
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try {
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/* process the events list first */
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while (resultSize() > 0) {
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Event r;
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synchronized (lolock) {
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r = events.remove(0);
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handleEvent (r);
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}
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}
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selector.select(1000);
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/* process the selected list now */
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Set<SelectionKey> selected = selector.selectedKeys();
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Iterator<SelectionKey> iter = selected.iterator();
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while (iter.hasNext()) {
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SelectionKey key = iter.next();
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iter.remove ();
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if (key.equals (listenerKey)) {
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if (terminating) {
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continue;
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}
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SocketChannel chan = schan.accept();
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if (chan == null) {
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continue; /* cancel something ? */
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}
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chan.configureBlocking (false);
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SelectionKey newkey = chan.register (selector, SelectionKey.OP_READ);
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HttpConnection c = new HttpConnection ();
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c.selectionKey = newkey;
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c.setChannel (chan);
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newkey.attach (c);
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allConnections.add (c);
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} else {
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try {
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if (key.isReadable()) {
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boolean closed;
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SocketChannel chan = (SocketChannel)key.channel();
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HttpConnection conn = (HttpConnection)key.attachment();
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// interestOps will be restored at end of read
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key.interestOps (0);
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handle (chan, conn);
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} else {
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assert false;
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}
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} catch (IOException e) {
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HttpConnection conn = (HttpConnection)key.attachment();
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logger.log (
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Level.FINER, "Dispatcher (2)", e
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);
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conn.close();
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}
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}
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}
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} catch (Exception e) {
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logger.log (Level.FINER, "Dispatcher (3)", e);
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}
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}
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}
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public void handle (SocketChannel chan, HttpConnection conn)
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throws IOException
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{
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try {
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Exchange t = new Exchange (chan, protocol, conn);
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executor.execute (t);
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} catch (HttpError e1) {
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logger.log (Level.FINER, "Dispatcher (4)", e1);
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conn.close();
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} catch (IOException e) {
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logger.log (Level.FINER, "Dispatcher (5)", e);
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conn.close();
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}
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}
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}
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static boolean debug = ServerConfig.debugEnabled ();
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static synchronized void dprint (String s) {
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if (debug) {
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System.out.println (s);
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}
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}
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static synchronized void dprint (Exception e) {
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if (debug) {
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System.out.println (e);
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e.printStackTrace();
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}
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}
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Logger getLogger () {
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return logger;
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}
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/* per exchange task */
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class Exchange implements Runnable {
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SocketChannel chan;
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HttpConnection connection;
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HttpContextImpl context;
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InputStream rawin;
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OutputStream rawout;
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String protocol;
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ExchangeImpl tx;
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HttpContextImpl ctx;
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boolean rejected = false;
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Exchange (SocketChannel chan, String protocol, HttpConnection conn) throws IOException {
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this.chan = chan;
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this.connection = conn;
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this.protocol = protocol;
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}
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public void run () {
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/* context will be null for new connections */
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context = connection.getHttpContext();
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boolean newconnection;
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SSLEngine engine = null;
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String requestLine = null;
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SSLStreams sslStreams = null;
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try {
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if (context != null ) {
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this.rawin = connection.getInputStream();
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this.rawout = connection.getRawOutputStream();
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newconnection = false;
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} else {
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/* figure out what kind of connection this is */
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newconnection = true;
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if (https) {
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if (sslContext == null) {
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logger.warning ("SSL connection received. No https contxt created");
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throw new HttpError ("No SSL context established");
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}
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sslStreams = new SSLStreams (ServerImpl.this, sslContext, chan);
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rawin = sslStreams.getInputStream();
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rawout = sslStreams.getOutputStream();
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engine = sslStreams.getSSLEngine();
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connection.sslStreams = sslStreams;
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} else {
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rawin = new BufferedInputStream(
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new Request.ReadStream (
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ServerImpl.this, chan
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));
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rawout = new Request.WriteStream (
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ServerImpl.this, chan
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);
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}
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connection.raw = rawin;
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connection.rawout = rawout;
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}
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Request req = new Request (rawin, rawout);
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requestLine = req.requestLine();
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if (requestLine == null) {
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/* connection closed */
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connection.close();
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return;
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}
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int space = requestLine.indexOf (' ');
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if (space == -1) {
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reject (Code.HTTP_BAD_REQUEST,
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requestLine, "Bad request line");
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return;
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}
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String method = requestLine.substring (0, space);
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int start = space+1;
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space = requestLine.indexOf(' ', start);
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if (space == -1) {
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reject (Code.HTTP_BAD_REQUEST,
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requestLine, "Bad request line");
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return;
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}
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String uriStr = requestLine.substring (start, space);
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URI uri = new URI (uriStr);
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start = space+1;
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String version = requestLine.substring (start);
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Headers headers = req.headers();
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String s = headers.getFirst ("Transfer-encoding");
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long clen = 0L;
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if (s !=null && s.equalsIgnoreCase ("chunked")) {
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clen = -1L;
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} else {
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s = headers.getFirst ("Content-Length");
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if (s != null) {
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clen = Long.parseLong(s);
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}
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}
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ctx = contexts.findContext (protocol, uri.getPath());
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if (ctx == null) {
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reject (Code.HTTP_NOT_FOUND,
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requestLine, "No context found for request");
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return;
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}
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connection.setContext (ctx);
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if (ctx.getHandler() == null) {
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reject (Code.HTTP_INTERNAL_ERROR,
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requestLine, "No handler for context");
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return;
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}
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tx = new ExchangeImpl (
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method, uri, req, clen, connection
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);
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String chdr = headers.getFirst("Connection");
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Headers rheaders = tx.getResponseHeaders();
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if (chdr != null && chdr.equalsIgnoreCase ("close")) {
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tx.close = true;
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}
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if (version.equalsIgnoreCase ("http/1.0")) {
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tx.http10 = true;
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if (chdr == null) {
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tx.close = true;
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rheaders.set ("Connection", "close");
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} else if (chdr.equalsIgnoreCase ("keep-alive")) {
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rheaders.set ("Connection", "keep-alive");
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int idle=(int)ServerConfig.getIdleInterval()/1000;
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int max=(int)ServerConfig.getMaxIdleConnections();
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String val = "timeout="+idle+", max="+max;
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rheaders.set ("Keep-Alive", val);
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}
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}
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if (newconnection) {
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connection.setParameters (
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rawin, rawout, chan, engine, sslStreams,
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sslContext, protocol, ctx, rawin
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);
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}
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/* check if client sent an Expect 100 Continue.
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* In that case, need to send an interim response.
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* In future API may be modified to allow app to
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* be involved in this process.
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*/
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String exp = headers.getFirst("Expect");
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if (exp != null && exp.equalsIgnoreCase ("100-continue")) {
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logReply (100, requestLine, null);
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sendReply (
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Code.HTTP_CONTINUE, false, null
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);
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}
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/* uf is the list of filters seen/set by the user.
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* sf is the list of filters established internally
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* and which are not visible to the user. uc and sc
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* are the corresponding Filter.Chains.
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* They are linked together by a LinkHandler
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* so that they can both be invoked in one call.
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*/
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List<Filter> sf = ctx.getSystemFilters();
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List<Filter> uf = ctx.getFilters();
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Filter.Chain sc = new Filter.Chain(sf, ctx.getHandler());
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Filter.Chain uc = new Filter.Chain(uf, new LinkHandler (sc));
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/* set up the two stream references */
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tx.getRequestBody();
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tx.getResponseBody();
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if (https) {
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uc.doFilter (new HttpsExchangeImpl (tx));
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} else {
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uc.doFilter (new HttpExchangeImpl (tx));
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}
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} catch (IOException e1) {
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logger.log (Level.FINER, "ServerImpl.Exchange (1)", e1);
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connection.close();
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} catch (NumberFormatException e3) {
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reject (Code.HTTP_BAD_REQUEST,
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|
requestLine, "NumberFormatException thrown");
|
|
} catch (URISyntaxException e) {
|
|
reject (Code.HTTP_BAD_REQUEST,
|
|
requestLine, "URISyntaxException thrown");
|
|
} catch (Exception e4) {
|
|
logger.log (Level.FINER, "ServerImpl.Exchange (2)", e4);
|
|
connection.close();
|
|
}
|
|
}
|
|
|
|
/* used to link to 2 or more Filter.Chains together */
|
|
|
|
class LinkHandler implements HttpHandler {
|
|
Filter.Chain nextChain;
|
|
|
|
LinkHandler (Filter.Chain nextChain) {
|
|
this.nextChain = nextChain;
|
|
}
|
|
|
|
public void handle (HttpExchange exchange) throws IOException {
|
|
nextChain.doFilter (exchange);
|
|
}
|
|
}
|
|
|
|
void reject (int code, String requestStr, String message) {
|
|
rejected = true;
|
|
logReply (code, requestStr, message);
|
|
sendReply (
|
|
code, true, "<h1>"+code+Code.msg(code)+"</h1>"+message
|
|
);
|
|
}
|
|
|
|
void sendReply (
|
|
int code, boolean closeNow, String text)
|
|
{
|
|
try {
|
|
String s = "HTTP/1.1 " + code + Code.msg(code) + "\r\n";
|
|
if (text != null && text.length() != 0) {
|
|
s = s + "Content-Length: "+text.length()+"\r\n";
|
|
s = s + "Content-Type: text/html\r\n";
|
|
} else {
|
|
s = s + "Content-Length: 0\r\n";
|
|
text = "";
|
|
}
|
|
if (closeNow) {
|
|
s = s + "Connection: close\r\n";
|
|
}
|
|
s = s + "\r\n" + text;
|
|
byte[] b = s.getBytes("ISO8859_1");
|
|
rawout.write (b);
|
|
rawout.flush();
|
|
if (closeNow) {
|
|
connection.close();
|
|
}
|
|
} catch (IOException e) {
|
|
logger.log (Level.FINER, "ServerImpl.sendReply", e);
|
|
connection.close();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void logReply (int code, String requestStr, String text) {
|
|
if (text == null) {
|
|
text = "";
|
|
}
|
|
String message = requestStr + " [" + code + " " +
|
|
Code.msg(code) + "] ("+text+")";
|
|
logger.fine (message);
|
|
}
|
|
|
|
long getTicks() {
|
|
return ticks;
|
|
}
|
|
|
|
public long getTime() {
|
|
return time;
|
|
}
|
|
|
|
void delay () {
|
|
Thread.yield();
|
|
try {
|
|
Thread.sleep (200);
|
|
} catch (InterruptedException e) {}
|
|
}
|
|
|
|
private int exchangeCount = 0;
|
|
|
|
synchronized void startExchange () {
|
|
exchangeCount ++;
|
|
}
|
|
|
|
synchronized int endExchange () {
|
|
exchangeCount --;
|
|
assert exchangeCount >= 0;
|
|
return exchangeCount;
|
|
}
|
|
|
|
HttpServer getWrapper () {
|
|
return wrapper;
|
|
}
|
|
|
|
/**
|
|
* TimerTask run every CLOCK_TICK ms
|
|
*/
|
|
class ServerTimerTask extends TimerTask {
|
|
public void run () {
|
|
LinkedList<HttpConnection> toClose = new LinkedList<HttpConnection>();
|
|
time = System.currentTimeMillis();
|
|
ticks ++;
|
|
synchronized (idleConnections) {
|
|
for (HttpConnection c : idleConnections) {
|
|
if (c.time <= time) {
|
|
toClose.add (c);
|
|
}
|
|
}
|
|
for (HttpConnection c : toClose) {
|
|
idleConnections.remove (c);
|
|
allConnections.remove (c);
|
|
c.close();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|