ServerSessionContext.java revision 0c131a2ca38465b7d1df4eaee63ac73ce4d5986d 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package org.apache.harmony.xnet.provider.jsse;
18
19import javax.net.ssl.SSLSession;
20
21/**
22 * Caches server sessions. Indexes by session ID. Users typically look up
23 * sessions using the ID provided by an SSL client.
24 */
25public class ServerSessionContext extends AbstractSessionContext {
26
27    private SSLServerSessionCache persistentCache;
28
29    public ServerSessionContext() {
30        super(100, 0);
31
32        // TODO make sure SSL_CTX does not automaticaly clear sessions we want it to cache
33        // SSL_CTX_set_session_cache_mode(sslCtxNativePointer, SSL_SESS_CACHE_NO_AUTO_CLEAR);
34
35        // TODO remove SSL_CTX session cache limit so we can manage it
36        // SSL_CTX_sess_set_cache_size(sslCtxNativePointer, 0);
37
38        // TODO override trimToSize and removeEldestEntry to use
39        // SSL_CTX_sessions to remove from native cache
40    }
41
42    public void setPersistentCache(SSLServerSessionCache persistentCache) {
43        this.persistentCache = persistentCache;
44    }
45
46    protected void sessionRemoved(SSLSession session) {}
47
48    @Override
49    public SSLSession getSession(byte[] sessionId) {
50        SSLSession session = super.getSession(sessionId);
51        if (session != null) {
52            return session;
53        }
54
55        // Check persistent cache.
56        if (persistentCache != null) {
57            byte[] data = persistentCache.getSessionData(sessionId);
58            if (data != null) {
59                session = toSession(data, null, -1);
60                if (session != null && session.isValid()) {
61                    super.putSession(session);
62                    return session;
63                }
64            }
65        }
66
67        return null;
68    }
69
70    @Override
71    void putSession(SSLSession session) {
72        super.putSession(session);
73
74        // TODO: In background thread.
75        if (persistentCache != null) {
76            byte[] data = toBytes(session);
77            if (data != null) {
78                persistentCache.putSessionData(session, data);
79            }
80        }
81    }
82}
83