/*

 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.net.httpserver;

import java.io.*;

import java.util.*;

import java.util.logging.Logger;

import com.sun.net.httpserver.*;

import com.sun.net.httpserver.spi.*;

/**

 * HttpContext represents a mapping between a protocol (http or https) together with a root URI path

 * to a {@link HttpHandler} which is invoked to handle requests destined

 * for the protocol/path on the associated HttpServer.

 * <p>

 * HttpContext instances are created by {@link HttpServer#createContext(String,String,HttpHandler,Object)}

 * <p>

 */

class HttpContextImpl extends HttpContext {

    private String path;

    private String protocol;

    private HttpHandler handler;

    private Map<String,Object> attributes = new HashMap<String,Object>();

    private ServerImpl server;

    /* system filters, not visible to applications */

    private LinkedList<Filter> sfilters = new LinkedList<Filter>();

    /* user filters, set by applications */

    private LinkedList<Filter> ufilters = new LinkedList<Filter>();

    private Authenticator authenticator;

    private AuthFilter authfilter;

    /**

     * constructor is package private.

     */

    HttpContextImpl (String protocol, String path, HttpHandler cb, ServerImpl server) {

        if (path == null || protocol == null || path.length() < 1 || path.charAt(0) != '/') {

            throw new IllegalArgumentException ("Illegal value for path or protocol");

        }

        this.protocol = protocol.toLowerCase();

        this.path = path;

        if (!this.protocol.equals ("http") && !this.protocol.equals ("https")) {

            throw new IllegalArgumentException ("Illegal value for protocol");

        }

        this.handler = cb;

        this.server = server;

        authfilter = new AuthFilter(null);

        sfilters.add (authfilter);

    }

    /**

     * returns the handler for this context

     * @return the HttpHandler for this context

     */

    public HttpHandler getHandler () {

        return handler;

    }

    public void setHandler (HttpHandler h) {

        if (h == null) {

            throw new NullPointerException ("Null handler parameter");

        }

        if (handler != null) {

            throw new IllegalArgumentException ("handler already set");

        }

        handler = h;

    }

    /**

     * returns the path this context was created with

     * @return this context's path

     */

    public String getPath() {

        return path;

    }

    /**

     * returns the server this context was created with

     * @return this context's server

     */

    public HttpServer getServer () {

        return server.getWrapper();

    }

    ServerImpl getServerImpl () {

        return server;

    }

    /**

     * returns the protocol this context was created with

     * @return this context's path

     */

    public String getProtocol() {

        return protocol;

    }

    /**

     * returns a mutable Map, which can be used to pass

     * configuration and other data to Filter modules

     * and to the context's exchange handler.

     * <p>

     * Every attribute stored in this Map will be visible to

     * every HttpExchange processed by this context

     */

    public Map<String,Object> getAttributes() {

        return attributes;

    }

    public List<Filter> getFilters () {

        return ufilters;

    }

    List<Filter> getSystemFilters () {

        return sfilters;

    }

    public Authenticator setAuthenticator (Authenticator auth) {

        Authenticator old = authenticator;

        authenticator = auth;

        authfilter.setAuthenticator (auth);

        return old;

    }

    public Authenticator getAuthenticator () {

        return authenticator;

    }

    Logger getLogger () {

        return server.getLogger();

    }

}