/*

 * Copyright 2003 Sun Microsystems, Inc.  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.  Sun designates this

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

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.net.www.protocol.http;

import java.io.IOException;

import java.net.URL;

import java.util.Hashtable;

import java.util.LinkedList;

import java.util.ListIterator;

import java.util.Enumeration;

import java.util.HashMap;

/**

 * @author Michael McMahon

 *

 * Interface provided by internal http authentication cache.

 * NB. This API will be replaced in a future release, and should

 * not be made public.

 */

public interface AuthCache {

    /**

     * Put an entry in the cache. pkey is a string specified as follows:

     *

     * A:[B:]C:D:E[:F]   Between 4 and 6 fields separated by ":"

     *          where the fields have the following meaning:

     * A is "s" or "p" for server or proxy authentication respectively

     * B is optional and is "D", "B", or "N" for digest, basic or ntlm auth.

     * C is either "http" or "https"

     * D is the hostname

     * E is the port number

     * F is optional and if present is the realm

     *

     * Generally, two entries are created for each AuthCacheValue,

     * one including the realm and one without the realm.

     * Also, for some schemes (digest) multiple entries may be created

     * with the same pkey, but with a different path value in

     * the AuthCacheValue.

     */

    public void put (String pkey, AuthCacheValue value);

    /**

     * Get an entry from the cache based on pkey as described above, but also

     * using a pathname (skey) and the cache must return an entry

     * if skey is a sub-path of the AuthCacheValue.path field.

     */

    public AuthCacheValue get (String pkey, String skey);

    /**

     * remove the entry from the cache whose pkey is specified and

     * whose path is equal to entry.path. If entry is null then

     * all entries with the same pkey should be removed.

     */

    public void remove (String pkey, AuthCacheValue entry);

}