Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (c) 2015, 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.security; |
| 18 | |
Chad Brubaker | 056e8b5 | 2016-01-22 21:48:07 -0800 | [diff] [blame] | 19 | import android.content.Context; |
| 20 | import android.content.pm.PackageManager; |
| 21 | import android.security.net.config.ApplicationConfig; |
| 22 | import android.security.net.config.ManifestConfigSource; |
| 23 | |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 24 | /** |
| 25 | * Network security policy. |
| 26 | * |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 27 | * <p>Network stacks/components should honor this policy to make it possible to centrally control |
| 28 | * the relevant aspects of network security behavior. |
| 29 | * |
| 30 | * <p>The policy currently consists of a single flag: whether cleartext network traffic is |
| 31 | * permitted. See {@link #isCleartextTrafficPermitted()}. |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 32 | */ |
| 33 | public class NetworkSecurityPolicy { |
| 34 | |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 35 | private static final NetworkSecurityPolicy INSTANCE = new NetworkSecurityPolicy(); |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 36 | |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 37 | private NetworkSecurityPolicy() {} |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 38 | |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 39 | /** |
| 40 | * Gets the policy for this process. |
| 41 | * |
| 42 | * <p>It's fine to cache this reference. Any changes to the policy will be immediately visible |
| 43 | * through the reference. |
| 44 | */ |
| 45 | public static NetworkSecurityPolicy getInstance() { |
| 46 | return INSTANCE; |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 47 | } |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 48 | |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 49 | /** |
| 50 | * Returns whether cleartext network traffic (e.g. HTTP, FTP, WebSockets, XMPP, IMAP, SMTP -- |
Chad Brubaker | 2091ab9 | 2015-12-09 14:58:01 -0800 | [diff] [blame] | 51 | * without TLS or STARTTLS) is permitted for all network communication from this process. |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 52 | * |
| 53 | * <p>When cleartext network traffic is not permitted, the platform's components (e.g. HTTP and |
Alex Klyubin | fbf4599 | 2015-04-21 13:44:29 -0700 | [diff] [blame] | 54 | * FTP stacks, {@link android.app.DownloadManager}, {@link android.media.MediaPlayer}) will |
| 55 | * refuse this process's requests to use cleartext traffic. Third-party libraries are strongly |
| 56 | * encouraged to honor this setting as well. |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 57 | * |
| 58 | * <p>This flag is honored on a best effort basis because it's impossible to prevent all |
| 59 | * cleartext traffic from Android applications given the level of access provided to them. For |
| 60 | * example, there's no expectation that the {@link java.net.Socket} API will honor this flag |
| 61 | * because it cannot determine whether its traffic is in cleartext. However, most network |
| 62 | * traffic from applications is handled by higher-level network stacks/components which can |
| 63 | * honor this aspect of the policy. |
Alex Klyubin | fbf4599 | 2015-04-21 13:44:29 -0700 | [diff] [blame] | 64 | * |
| 65 | * <p>NOTE: {@link android.webkit.WebView} does not honor this flag. |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 66 | */ |
| 67 | public boolean isCleartextTrafficPermitted() { |
Chad Brubaker | 6568cf1 | 2015-12-08 13:37:28 -0800 | [diff] [blame] | 68 | return libcore.net.NetworkSecurityPolicy.getInstance().isCleartextTrafficPermitted(); |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 69 | } |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 70 | |
| 71 | /** |
Chad Brubaker | 2091ab9 | 2015-12-09 14:58:01 -0800 | [diff] [blame] | 72 | * Returns whether cleartext network traffic (e.g. HTTP, FTP, XMPP, IMAP, SMTP -- without |
| 73 | * TLS or STARTTLS) is permitted for communicating with {@code hostname} for this process. |
| 74 | * |
| 75 | * @see #isCleartextTrafficPermitted() |
Chad Brubaker | 2091ab9 | 2015-12-09 14:58:01 -0800 | [diff] [blame] | 76 | */ |
| 77 | public boolean isCleartextTrafficPermitted(String hostname) { |
| 78 | return libcore.net.NetworkSecurityPolicy.getInstance() |
| 79 | .isCleartextTrafficPermitted(hostname); |
| 80 | } |
| 81 | |
| 82 | /** |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 83 | * Sets whether cleartext network traffic is permitted for this process. |
| 84 | * |
| 85 | * <p>This method is used by the platform early on in the application's initialization to set |
| 86 | * the policy. |
| 87 | * |
| 88 | * @hide |
| 89 | */ |
| 90 | public void setCleartextTrafficPermitted(boolean permitted) { |
Chad Brubaker | 6568cf1 | 2015-12-08 13:37:28 -0800 | [diff] [blame] | 91 | FrameworkNetworkSecurityPolicy policy = new FrameworkNetworkSecurityPolicy(permitted); |
| 92 | libcore.net.NetworkSecurityPolicy.setInstance(policy); |
Alex Klyubin | 84750f3 | 2015-03-23 10:51:20 -0700 | [diff] [blame] | 93 | } |
Chad Brubaker | 056e8b5 | 2016-01-22 21:48:07 -0800 | [diff] [blame] | 94 | |
| 95 | |
| 96 | /** |
| 97 | * Returns an {@link ApplicationConfig} based on the configuration for {@code packageName}. |
| 98 | * |
| 99 | * @hide |
| 100 | */ |
| 101 | public static ApplicationConfig getApplicationConfigForPackage(Context context, |
| 102 | String packageName) throws PackageManager.NameNotFoundException { |
| 103 | Context appContext = context.createPackageContext(packageName, 0); |
| 104 | ManifestConfigSource source = new ManifestConfigSource(appContext); |
| 105 | return new ApplicationConfig(source); |
| 106 | } |
Alex Klyubin | f9034cc | 2015-02-12 11:43:09 -0800 | [diff] [blame] | 107 | } |