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/*
* 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.WifiEntry.CONNECTED_STATE_CONNECTED;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.LinkProperties;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.net.NetworkScoreManager;
import android.net.wifi.WifiManager;
import android.os.Handler;
import androidx.annotation.AnyThread;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.WorkerThread;
import androidx.lifecycle.Lifecycle;
import java.time.Clock;
/**
* Wi-Fi tracker that maintains a single WifiEntry corresponding to a given WifiEntry key.
*/
public abstract class NetworkDetailsTracker extends BaseWifiTracker {
/**
* Creates a concrete implementation of a NetworkDetailsTracker depending on the type of
* WifiEntry being tracked.
*
* @param lifecycle Lifecycle this is tied to for lifecycle callbacks.
* @param context Context for registering broadcast receiver and for resource
* strings.
* @param wifiManager Provides all Wi-Fi info.
* @param connectivityManager Provides network info.
* @param networkScoreManager Provides network scores for network badging.
* @param mainHandler Handler for processing listener callbacks.
* @param workerHandler Handler for processing all broadcasts and running the Scanner.
* @param clock Clock used for evaluating the age of scans
* @param maxScanAgeMillis Max age for tracked WifiEntries.
* @param scanIntervalMillis Interval between initiating scans.
* @param key Key of the WifiEntry to be tracked.
* @return
*/
public static NetworkDetailsTracker createNetworkDetailsTracker(@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) {
if (key.startsWith(StandardWifiEntry.KEY_PREFIX)) {
return new StandardNetworkDetailsTracker(lifecycle, context, wifiManager,
connectivityManager, networkScoreManager, mainHandler, workerHandler, clock,
maxScanAgeMillis, scanIntervalMillis, key);
} else if (key.startsWith(PasspointWifiEntry.KEY_PREFIX)) {
return new PasspointNetworkDetailsTracker(lifecycle, context, wifiManager,
connectivityManager, networkScoreManager, mainHandler, workerHandler, clock,
maxScanAgeMillis, scanIntervalMillis, key);
} else {
throw new IllegalArgumentException("Key does not contain valid key prefix!");
}
}
protected NetworkInfo mCurrentNetworkInfo;
/**
* Abstract constructor for NetworkDetailsTracker.
* Clients must use {@link NetworkDetailsTracker#createNetworkDetailsTracker} for creating
* an appropriate concrete instance of this class.
*/
NetworkDetailsTracker(@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 tag) {
super(lifecycle, context, wifiManager, connectivityManager, networkScoreManager,
mainHandler, workerHandler, clock, maxScanAgeMillis, scanIntervalMillis,
null /* listener */, tag);
}
@WorkerThread
@Override
protected void handleNetworkStateChangedAction(@NonNull Intent intent) {
checkNotNull(intent, "Intent cannot be null!");
mCurrentNetworkInfo = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
getWifiEntry().updateConnectionInfo(mWifiManager.getConnectionInfo(), mCurrentNetworkInfo);
}
@WorkerThread
@Override
protected void handleRssiChangedAction() {
getWifiEntry().updateConnectionInfo(mWifiManager.getConnectionInfo(), mCurrentNetworkInfo);
}
@WorkerThread
@Override
protected void handleLinkPropertiesChanged(@Nullable LinkProperties linkProperties) {
final WifiEntry chosenEntry = getWifiEntry();
if (chosenEntry.getConnectedState() == CONNECTED_STATE_CONNECTED) {
chosenEntry.updateLinkProperties(linkProperties);
}
}
@WorkerThread
@Override
protected void handleNetworkCapabilitiesChanged(@Nullable NetworkCapabilities capabilities) {
final WifiEntry chosenEntry = getWifiEntry();
if (chosenEntry.getConnectedState() == CONNECTED_STATE_CONNECTED) {
chosenEntry.updateNetworkCapabilities(capabilities);
chosenEntry.setIsLowQuality(mIsWifiValidated && mIsCellDefaultRoute);
}
}
@WorkerThread
@Override
protected void handleDefaultRouteChanged() {
final WifiEntry chosenEntry = getWifiEntry();
if (chosenEntry.getConnectedState() == CONNECTED_STATE_CONNECTED) {
chosenEntry.setIsDefaultNetwork(mIsWifiDefaultRoute);
chosenEntry.setIsLowQuality(mIsWifiValidated && mIsCellDefaultRoute);
}
}
/**
* Returns the WifiEntry object representing the single network being tracked.
*/
@AnyThread
@NonNull
public abstract WifiEntry getWifiEntry();
}
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