| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.net.shared; |
| |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED; |
| import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH; |
| import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR; |
| import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET; |
| import static android.net.NetworkCapabilities.TRANSPORT_WIFI; |
| |
| import android.net.NetworkCapabilities; |
| |
| /** @hide */ |
| public class NetworkMonitorUtils { |
| // This class is used by both NetworkMonitor and ConnectivityService, so it cannot use |
| // NetworkStack shims, but at the same time cannot use non-system APIs. |
| // TRANSPORT_TEST is test API as of R (so it is enforced to always be 7 and can't be changed), |
| // and it is being added as a system API in S. |
| // TODO: use NetworkCapabilities.TRANSPORT_TEST once NetworkStack builds against API 31. |
| private static final int TRANSPORT_TEST = 7; |
| |
| // Network conditions broadcast constants |
| public static final String ACTION_NETWORK_CONDITIONS_MEASURED = |
| "android.net.conn.NETWORK_CONDITIONS_MEASURED"; |
| public static final String EXTRA_CONNECTIVITY_TYPE = "extra_connectivity_type"; |
| public static final String EXTRA_NETWORK_TYPE = "extra_network_type"; |
| public static final String EXTRA_RESPONSE_RECEIVED = "extra_response_received"; |
| public static final String EXTRA_IS_CAPTIVE_PORTAL = "extra_is_captive_portal"; |
| public static final String EXTRA_CELL_ID = "extra_cellid"; |
| public static final String EXTRA_SSID = "extra_ssid"; |
| public static final String EXTRA_BSSID = "extra_bssid"; |
| /** real time since boot */ |
| public static final String EXTRA_REQUEST_TIMESTAMP_MS = "extra_request_timestamp_ms"; |
| public static final String EXTRA_RESPONSE_TIMESTAMP_MS = "extra_response_timestamp_ms"; |
| public static final String PERMISSION_ACCESS_NETWORK_CONDITIONS = |
| "android.permission.ACCESS_NETWORK_CONDITIONS"; |
| |
| /** |
| * Return whether validation is required for private DNS in strict mode. |
| * @param nc Network capabilities of the network to test. |
| */ |
| public static boolean isPrivateDnsValidationRequired(NetworkCapabilities nc) { |
| if (nc == null) return false; |
| |
| // TODO: Consider requiring validation for DUN networks. |
| if (nc.hasCapability(NET_CAPABILITY_INTERNET) |
| && nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) |
| && nc.hasCapability(NET_CAPABILITY_TRUSTED)) { |
| // Real networks |
| return true; |
| } |
| |
| // TODO: once TRANSPORT_TEST is @SystemApi in S and S SDK is stable (so constant shims can |
| // be replaced with the SDK constant that will be inlined), replace isTestNetwork with |
| // hasTransport(TRANSPORT_TEST) |
| |
| // Test networks that also have one of the major transport types are attempting to replicate |
| // that transport on a test interface (for example, test ethernet networks with |
| // EthernetManager#setIncludeTestInterfaces). Run validation on them for realistic tests. |
| // See also comments on EthernetManager#setIncludeTestInterfaces and on TestNetworkManager. |
| if (nc.hasTransport(TRANSPORT_TEST) && nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) && ( |
| nc.hasTransport(TRANSPORT_WIFI) |
| || nc.hasTransport(TRANSPORT_CELLULAR) |
| || nc.hasTransport(TRANSPORT_BLUETOOTH) |
| || nc.hasTransport(TRANSPORT_ETHERNET))) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Return whether validation is required for a network. |
| * @param nc Network capabilities of the network to test. |
| */ |
| public static boolean isValidationRequired(NetworkCapabilities nc) { |
| // TODO: Consider requiring validation for DUN networks. |
| return isPrivateDnsValidationRequired(nc) && nc.hasCapability(NET_CAPABILITY_NOT_VPN); |
| } |
| } |