| /* |
| * 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 com.android.wifitrackerlib; |
| |
| import static androidx.core.util.Preconditions.checkNotNull; |
| |
| import static com.android.wifitrackerlib.NetworkRequestEntry.wifiConfigToNetworkRequestEntryKey; |
| import static com.android.wifitrackerlib.StandardWifiEntry.wifiConfigToStandardWifiEntryKey; |
| import static com.android.wifitrackerlib.Utils.getSecurityTypesFromScanResult; |
| import static com.android.wifitrackerlib.WifiEntry.CONNECTED_STATE_CONNECTED; |
| |
| import static java.util.stream.Collectors.toList; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.net.ConnectivityManager; |
| import android.net.LinkProperties; |
| import android.net.Network; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkInfo; |
| import android.net.NetworkScoreManager; |
| import android.net.wifi.WifiConfiguration; |
| import android.net.wifi.WifiInfo; |
| import android.net.wifi.WifiManager; |
| import android.os.Handler; |
| import android.text.TextUtils; |
| |
| import androidx.annotation.AnyThread; |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.annotation.WorkerThread; |
| import androidx.lifecycle.Lifecycle; |
| |
| import java.time.Clock; |
| import java.util.Collections; |
| |
| /** |
| * Implementation of NetworkDetailsTracker that tracks a single StandardWifiEntry. |
| */ |
| class StandardNetworkDetailsTracker extends NetworkDetailsTracker { |
| private static final String TAG = "StandardNetworkDetailsTracker"; |
| |
| private final StandardWifiEntry mChosenEntry; |
| private final boolean mIsNetworkRequest; |
| private NetworkInfo mCurrentNetworkInfo; |
| |
| StandardNetworkDetailsTracker(@NonNull Lifecycle lifecycle, |
| @NonNull Context context, |
| @NonNull WifiManager wifiManager, |
| @NonNull ConnectivityManager connectivityManager, |
| @NonNull NetworkScoreManager networkScoreManager, |
| @NonNull Handler mainHandler, |
| @NonNull Handler workerHandler, |
| @NonNull Clock clock, |
| long maxScanAgeMillis, |
| long scanIntervalMillis, |
| String key) { |
| super(lifecycle, context, wifiManager, connectivityManager, networkScoreManager, |
| mainHandler, workerHandler, clock, maxScanAgeMillis, scanIntervalMillis, TAG); |
| |
| if (key.startsWith(NetworkRequestEntry.KEY_PREFIX)) { |
| mIsNetworkRequest = true; |
| mChosenEntry = new NetworkRequestEntry(mContext, mMainHandler, key, mWifiManager, |
| mWifiNetworkScoreCache, false /* forSavedNetworksPage */); |
| } else { |
| mIsNetworkRequest = false; |
| mChosenEntry = new StandardWifiEntry(mContext, mMainHandler, key, mWifiManager, |
| mWifiNetworkScoreCache, false /* forSavedNetworksPage */); |
| } |
| cacheNewScanResults(); |
| conditionallyUpdateScanResults(true /* lastScanSucceeded */); |
| conditionallyUpdateConfig(); |
| final WifiInfo wifiInfo = mWifiManager.getConnectionInfo(); |
| final Network currentNetwork = mWifiManager.getCurrentNetwork(); |
| mCurrentNetworkInfo = mConnectivityManager.getNetworkInfo(currentNetwork); |
| mChosenEntry.updateConnectionInfo(wifiInfo, mCurrentNetworkInfo); |
| handleLinkPropertiesChanged(mConnectivityManager.getLinkProperties(currentNetwork)); |
| } |
| |
| @AnyThread |
| @Override |
| @NonNull |
| public WifiEntry getWifiEntry() { |
| return mChosenEntry; |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleWifiStateChangedAction() { |
| conditionallyUpdateScanResults(true /* lastScanSucceeded */); |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleScanResultsAvailableAction(@NonNull Intent intent) { |
| checkNotNull(intent, "Intent cannot be null!"); |
| conditionallyUpdateScanResults( |
| intent.getBooleanExtra(WifiManager.EXTRA_RESULTS_UPDATED, true)); |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleConfiguredNetworksChangedAction(@NonNull Intent intent) { |
| checkNotNull(intent, "Intent cannot be null!"); |
| final WifiConfiguration updatedConfig = |
| (WifiConfiguration) intent.getExtra(WifiManager.EXTRA_WIFI_CONFIGURATION); |
| if (updatedConfig != null && configMatches(updatedConfig)) { |
| final int changeReason = intent.getIntExtra(WifiManager.EXTRA_CHANGE_REASON, |
| -1 /* defaultValue*/); |
| if (changeReason == WifiManager.CHANGE_REASON_ADDED |
| || changeReason == WifiManager.CHANGE_REASON_CONFIG_CHANGE) { |
| mChosenEntry.updateConfig(updatedConfig); |
| } else if (changeReason == WifiManager.CHANGE_REASON_REMOVED) { |
| mChosenEntry.updateConfig(null); |
| } |
| } else { |
| conditionallyUpdateConfig(); |
| } |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleNetworkStateChangedAction(@NonNull Intent intent) { |
| checkNotNull(intent, "Intent cannot be null!"); |
| mCurrentNetworkInfo = (NetworkInfo) intent.getExtra(WifiManager.EXTRA_NETWORK_INFO); |
| mChosenEntry.updateConnectionInfo(mWifiManager.getConnectionInfo(), mCurrentNetworkInfo); |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleRssiChangedAction() { |
| mChosenEntry.updateConnectionInfo(mWifiManager.getConnectionInfo(), mCurrentNetworkInfo); |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleLinkPropertiesChanged(@Nullable LinkProperties linkProperties) { |
| if (mChosenEntry.getConnectedState() == CONNECTED_STATE_CONNECTED) { |
| mChosenEntry.updateLinkProperties(linkProperties); |
| } |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleNetworkCapabilitiesChanged(@Nullable NetworkCapabilities capabilities) { |
| if (mChosenEntry.getConnectedState() == CONNECTED_STATE_CONNECTED) { |
| mChosenEntry.updateNetworkCapabilities(capabilities); |
| } |
| } |
| |
| @WorkerThread |
| @Override |
| protected void handleNetworkScoreCacheUpdated() { |
| mChosenEntry.onScoreCacheUpdated(); |
| } |
| |
| /** |
| * Updates the tracked entry's scan results up to the max scan age (or more, if the last scan |
| * was unsuccessful). If Wifi is disabled, the tracked entry's level will be cleared. |
| */ |
| private void conditionallyUpdateScanResults(boolean lastScanSucceeded) { |
| if (mWifiManager.getWifiState() == WifiManager.WIFI_STATE_DISABLED) { |
| mChosenEntry.updateScanResultInfo(Collections.emptyList()); |
| return; |
| } |
| |
| long scanAgeWindow = mMaxScanAgeMillis; |
| if (lastScanSucceeded) { |
| cacheNewScanResults(); |
| } else { |
| // Scan failed, increase scan age window to prevent WifiEntry list from |
| // clearing prematurely. |
| scanAgeWindow += mScanIntervalMillis; |
| } |
| mChosenEntry.updateScanResultInfo(mScanResultUpdater.getScanResults(scanAgeWindow)); |
| } |
| |
| /** |
| * Updates the tracked entry's WifiConfiguration from getPrivilegedConfiguredNetworks(), or sets |
| * it to null if it does not exist. |
| */ |
| private void conditionallyUpdateConfig() { |
| WifiConfiguration updatedConfig = mWifiManager.getPrivilegedConfiguredNetworks().stream() |
| .filter(this::configMatches) |
| .findAny().orElse(null); |
| mChosenEntry.updateConfig(updatedConfig); |
| } |
| |
| /** |
| * Updates ScanResultUpdater with new ScanResults matching mChosenEntry. |
| */ |
| private void cacheNewScanResults() { |
| mScanResultUpdater.update(mWifiManager.getScanResults().stream() |
| .filter(scan -> TextUtils.equals(scan.SSID, mChosenEntry.getSsid()) |
| && getSecurityTypesFromScanResult(scan).contains( |
| mChosenEntry.getSecurity())) |
| .collect(toList())); |
| } |
| |
| private boolean configMatches(@NonNull WifiConfiguration config) { |
| if (config.isPasspoint()) { |
| return false; |
| } |
| String configKey = config.fromWifiNetworkSpecifier |
| ? wifiConfigToNetworkRequestEntryKey(config) |
| : wifiConfigToStandardWifiEntryKey(config); |
| return TextUtils.equals(configKey, mChosenEntry.getKey()); |
| } |
| } |