1/*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package sun.net.www.protocol.http;
27
28import java.io.IOException;
29import java.net.URL;
30import java.util.Hashtable;
31import java.util.LinkedList;
32import java.util.ListIterator;
33import java.util.Enumeration;
34import java.util.HashMap;
35
36/**
37 * @author Michael McMahon
38 */
39
40public class AuthCacheImpl implements AuthCache {
41    HashMap hashtable;
42
43    public AuthCacheImpl () {
44        hashtable = new HashMap ();
45    }
46
47    public void setMap (HashMap map) {
48        hashtable = map;
49    }
50
51    // put a value in map according to primary key + secondary key which
52    // is the path field of AuthenticationInfo
53
54    public synchronized void put (String pkey, AuthCacheValue value) {
55        LinkedList list = (LinkedList) hashtable.get (pkey);
56        String skey = value.getPath();
57        if (list == null) {
58            list = new LinkedList ();
59            hashtable.put (pkey, list);
60        }
61        // Check if the path already exists or a super-set of it exists
62        ListIterator iter = list.listIterator();
63        while (iter.hasNext()) {
64            AuthenticationInfo inf = (AuthenticationInfo)iter.next();
65            if (inf.path == null || inf.path.startsWith (skey)) {
66                iter.remove ();
67            }
68        }
69        iter.add (value);
70    }
71
72    // get a value from map checking both primary
73    // and secondary (urlpath) key
74
75    public synchronized AuthCacheValue get (String pkey, String skey) {
76        AuthenticationInfo result = null;
77        LinkedList list = (LinkedList) hashtable.get (pkey);
78        if (list == null || list.size() == 0) {
79            return null;
80        }
81        if (skey == null) {
82            // list should contain only one element
83            return (AuthenticationInfo)list.get (0);
84        }
85        ListIterator iter = list.listIterator();
86        while (iter.hasNext()) {
87            AuthenticationInfo inf = (AuthenticationInfo)iter.next();
88            if (skey.startsWith (inf.path)) {
89                return inf;
90            }
91        }
92        return null;
93    }
94
95    public synchronized void remove (String pkey, AuthCacheValue entry) {
96        LinkedList list = (LinkedList) hashtable.get (pkey);
97        if (list == null) {
98            return;
99        }
100        if (entry == null) {
101            list.clear();
102            return;
103        }
104        ListIterator iter = list.listIterator ();
105        while (iter.hasNext()) {
106            AuthenticationInfo inf = (AuthenticationInfo)iter.next();
107            if (entry.equals(inf)) {
108                iter.remove ();
109            }
110        }
111    }
112}
113