Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 | |
| 17 | package android.net; |
| 18 | |
Mathew Inwood | 53f089f | 2018-08-08 14:44:44 +0100 | [diff] [blame] | 19 | import android.annotation.UnsupportedAppUsage; |
Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 20 | import android.content.Context; |
| 21 | import android.util.Log; |
| 22 | |
Narayan Kamath | d6b37fd | 2013-09-09 18:23:27 +0100 | [diff] [blame] | 23 | import com.android.org.conscrypt.ClientSessionContext; |
Kenny Root | 12e7522 | 2013-04-23 22:34:24 -0700 | [diff] [blame] | 24 | import com.android.org.conscrypt.FileClientSessionCache; |
| 25 | import com.android.org.conscrypt.SSLClientSessionCache; |
| 26 | |
Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 27 | import java.io.File; |
| 28 | import java.io.IOException; |
| 29 | |
Narayan Kamath | d6b37fd | 2013-09-09 18:23:27 +0100 | [diff] [blame] | 30 | import javax.net.ssl.SSLContext; |
| 31 | import javax.net.ssl.SSLSessionContext; |
| 32 | |
Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 33 | /** |
| 34 | * File-based cache of established SSL sessions. When re-establishing a |
| 35 | * connection to the same server, using an SSL session cache can save some time, |
| 36 | * power, and bandwidth by skipping directly to an encrypted stream. |
| 37 | * This is a persistent cache which can span executions of the application. |
| 38 | * |
| 39 | * @see SSLCertificateSocketFactory |
| 40 | */ |
| 41 | public final class SSLSessionCache { |
| 42 | private static final String TAG = "SSLSessionCache"; |
Mathew Inwood | 53f089f | 2018-08-08 14:44:44 +0100 | [diff] [blame] | 43 | @UnsupportedAppUsage |
Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 44 | /* package */ final SSLClientSessionCache mSessionCache; |
| 45 | |
| 46 | /** |
Narayan Kamath | d6b37fd | 2013-09-09 18:23:27 +0100 | [diff] [blame] | 47 | * Installs a {@link SSLSessionCache} on a {@link SSLContext}. The cache will |
| 48 | * be used on all socket factories created by this context (including factories |
| 49 | * created before this call). |
| 50 | * |
| 51 | * @param cache the cache instance to install, or {@code null} to uninstall any |
| 52 | * existing cache. |
| 53 | * @param context the context to install it on. |
| 54 | * @throws IllegalArgumentException if the context does not support a session |
| 55 | * cache. |
| 56 | * |
| 57 | * @hide candidate for public API |
| 58 | */ |
| 59 | public static void install(SSLSessionCache cache, SSLContext context) { |
| 60 | SSLSessionContext clientContext = context.getClientSessionContext(); |
| 61 | if (clientContext instanceof ClientSessionContext) { |
| 62 | ((ClientSessionContext) clientContext).setPersistentCache( |
| 63 | cache == null ? null : cache.mSessionCache); |
| 64 | } else { |
| 65 | throw new IllegalArgumentException("Incompatible SSLContext: " + context); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * NOTE: This needs to be Object (and not SSLClientSessionCache) because apps |
| 71 | * that build directly against the framework (and not the SDK) might not declare |
| 72 | * a dependency on conscrypt. Javac will then has fail while resolving constructors. |
| 73 | * |
| 74 | * @hide For unit test use only |
| 75 | */ |
| 76 | public SSLSessionCache(Object cache) { |
| 77 | mSessionCache = (SSLClientSessionCache) cache; |
| 78 | } |
| 79 | |
| 80 | /** |
Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 81 | * Create a session cache using the specified directory. |
| 82 | * Individual session entries will be files within the directory. |
| 83 | * Multiple instances for the same directory share data internally. |
| 84 | * |
| 85 | * @param dir to store session files in (created if necessary) |
| 86 | * @throws IOException if the cache can't be opened |
| 87 | */ |
| 88 | public SSLSessionCache(File dir) throws IOException { |
Narayan Kamath | fdf4bbf | 2013-09-09 16:46:16 +0000 | [diff] [blame] | 89 | mSessionCache = FileClientSessionCache.usingDirectory(dir); |
Dan Egnor | 60586f2 | 2010-02-08 21:56:38 -0800 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Create a session cache at the default location for this app. |
| 94 | * Multiple instances share data internally. |
| 95 | * |
| 96 | * @param context for the application |
| 97 | */ |
| 98 | public SSLSessionCache(Context context) { |
| 99 | File dir = context.getDir("sslcache", Context.MODE_PRIVATE); |
| 100 | SSLClientSessionCache cache = null; |
| 101 | try { |
| 102 | cache = FileClientSessionCache.usingDirectory(dir); |
| 103 | } catch (IOException e) { |
| 104 | Log.w(TAG, "Unable to create SSL session cache in " + dir, e); |
| 105 | } |
| 106 | mSessionCache = cache; |
| 107 | } |
| 108 | } |