1/*
2 * Copyright (c) 2003, 2011, 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.util.LinkedList;
29import java.util.ListIterator;
30import java.util.HashMap;
31
32/**
33 * @author Michael McMahon
34 */
35
36public class AuthCacheImpl implements AuthCache {
37    HashMap<String,LinkedList<AuthCacheValue>> hashtable;
38
39    public AuthCacheImpl () {
40        hashtable = new HashMap<String,LinkedList<AuthCacheValue>>();
41    }
42
43    public void setMap (HashMap<String,LinkedList<AuthCacheValue>> map) {
44        hashtable = map;
45    }
46
47    // put a value in map according to primary key + secondary key which
48    // is the path field of AuthenticationInfo
49
50    public synchronized void put (String pkey, AuthCacheValue value) {
51        LinkedList<AuthCacheValue> list = hashtable.get (pkey);
52        String skey = value.getPath();
53        if (list == null) {
54            list = new LinkedList<AuthCacheValue>();
55            hashtable.put(pkey, list);
56        }
57        // Check if the path already exists or a super-set of it exists
58        ListIterator<AuthCacheValue> iter = list.listIterator();
59        while (iter.hasNext()) {
60            AuthenticationInfo inf = (AuthenticationInfo)iter.next();
61            if (inf.path == null || inf.path.startsWith (skey)) {
62                iter.remove ();
63            }
64        }
65        iter.add(value);
66    }
67
68    // get a value from map checking both primary
69    // and secondary (urlpath) key
70
71    public synchronized AuthCacheValue get (String pkey, String skey) {
72        AuthenticationInfo result = null;
73        LinkedList<AuthCacheValue> list = hashtable.get (pkey);
74        if (list == null || list.size() == 0) {
75            return null;
76        }
77        if (skey == null) {
78            // list should contain only one element
79            return (AuthenticationInfo)list.get (0);
80        }
81        ListIterator<AuthCacheValue> iter = list.listIterator();
82        while (iter.hasNext()) {
83            AuthenticationInfo inf = (AuthenticationInfo)iter.next();
84            if (skey.startsWith (inf.path)) {
85                return inf;
86            }
87        }
88        return null;
89    }
90
91    public synchronized void remove (String pkey, AuthCacheValue entry) {
92        LinkedList<AuthCacheValue> list = hashtable.get (pkey);
93        if (list == null) {
94            return;
95        }
96        if (entry == null) {
97            list.clear();
98            return;
99        }
100        ListIterator<AuthCacheValue> iter = list.listIterator ();
101        while (iter.hasNext()) {
102            AuthenticationInfo inf = (AuthenticationInfo)iter.next();
103            if (entry.equals(inf)) {
104                iter.remove ();
105            }
106        }
107    }
108}
109