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/*
* Copyright (C) 2021 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.settings.wifi;
import android.content.Context;
import android.net.wifi.WifiManager;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.PersistableBundle;
import android.os.Process;
import android.os.SimpleClock;
import android.os.SystemClock;
import android.telephony.CarrierConfigManager;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.OnLifecycleEvent;
import com.android.internal.annotations.VisibleForTesting;
import com.android.settings.overlay.FeatureFactory;
import com.android.wifitrackerlib.MergedCarrierEntry;
import com.android.wifitrackerlib.WifiEntry;
import com.android.wifitrackerlib.WifiPickerTracker;
import java.time.Clock;
import java.time.ZoneOffset;
public class WifiPickerTrackerHelper implements LifecycleObserver {
private static final String TAG = "WifiPickerTrackerHelper";
// Max age of tracked WifiEntries
private static final long MAX_SCAN_AGE_MILLIS = 15_000;
// Interval between initiating WifiPickerTracker scans
private static final long SCAN_INTERVAL_MILLIS = 10_000;
// Clock used for evaluating the age of scans
private static final Clock ELAPSED_REALTIME_CLOCK = new SimpleClock(ZoneOffset.UTC) {
@Override
public long millis() {
return SystemClock.elapsedRealtime();
}
};
protected WifiPickerTracker mWifiPickerTracker;
// Worker thread used for WifiPickerTracker work
protected HandlerThread mWorkerThread;
protected final WifiManager mWifiManager;
protected final CarrierConfigManager mCarrierConfigManager;
public WifiPickerTrackerHelper(@NonNull Lifecycle lifecycle, @NonNull Context context,
@Nullable WifiPickerTracker.WifiPickerTrackerCallback listener) {
if (lifecycle == null) {
throw new IllegalArgumentException("lifecycle must be non-null.");
}
lifecycle.addObserver(this);
mWorkerThread = new HandlerThread(TAG
+ "{" + Integer.toHexString(System.identityHashCode(this)) + "}",
Process.THREAD_PRIORITY_BACKGROUND);
mWorkerThread.start();
mWifiPickerTracker = FeatureFactory.getFactory(context)
.getWifiTrackerLibProvider()
.createWifiPickerTracker(lifecycle, context,
new Handler(Looper.getMainLooper()),
mWorkerThread.getThreadHandler(),
ELAPSED_REALTIME_CLOCK,
MAX_SCAN_AGE_MILLIS,
SCAN_INTERVAL_MILLIS,
listener);
mWifiManager = context.getSystemService(WifiManager.class);
mCarrierConfigManager = context.getSystemService(CarrierConfigManager.class);
}
/** @OnLifecycleEvent(ON_DESTROY) */
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroy() {
mWorkerThread.quit();
}
/** Return the WifiPickerTracker class */
public @NonNull WifiPickerTracker getWifiPickerTracker() {
return mWifiPickerTracker;
}
/** Return the enabled/disabled state of the carrier network provision */
public boolean isCarrierNetworkProvisionEnabled(int subId) {
final PersistableBundle config = mCarrierConfigManager.getConfigForSubId(subId);
if (config == null) {
Log.e(TAG, "Could not get carrier config, subId:" + subId);
return false;
}
final boolean enabled = config.getBoolean(
CarrierConfigManager.KEY_CARRIER_PROVISIONS_WIFI_MERGED_NETWORKS_BOOL);
Log.i(TAG, "isCarrierNetworkProvisionEnabled:" + enabled);
return enabled;
}
/** Return the enabled/disabled state of the carrier network */
public boolean isCarrierNetworkEnabled(int subId) {
return mWifiManager.isCarrierNetworkOffloadEnabled(subId, true /* merged */);
}
/** Enables/disables the carrier network */
public void setCarrierNetworkEnabled(boolean enabled) {
final MergedCarrierEntry mergedCarrierEntry = mWifiPickerTracker.getMergedCarrierEntry();
if (mergedCarrierEntry == null) {
return;
}
mergedCarrierEntry.setEnabled(enabled);
}
/** Connect to the carrier network */
public boolean connectCarrierNetwork(@Nullable WifiEntry.ConnectCallback callback) {
final MergedCarrierEntry mergedCarrierEntry = mWifiPickerTracker.getMergedCarrierEntry();
if (mergedCarrierEntry == null || !mergedCarrierEntry.canConnect()) {
return false;
}
mergedCarrierEntry.connect(callback);
return true;
}
/** Confirms connection of the carrier network connected with the internet access */
public boolean isCarrierNetworkActive() {
final MergedCarrierEntry mergedCarrierEntry = mWifiPickerTracker.getMergedCarrierEntry();
return (mergedCarrierEntry != null && mergedCarrierEntry.isDefaultNetwork());
}
/** Return the carrier network ssid */
public String getCarrierNetworkSsid() {
final MergedCarrierEntry mergedCarrierEntry = mWifiPickerTracker.getMergedCarrierEntry();
if (mergedCarrierEntry == null) {
return null;
}
return mergedCarrierEntry.getSsid();
}
@VisibleForTesting
void setWifiPickerTracker(@NonNull WifiPickerTracker wifiPickerTracker) {
mWifiPickerTracker = wifiPickerTracker;
}
@VisibleForTesting
void setWorkerThread(@NonNull HandlerThread workerThread) {
mWorkerThread = workerThread;
}
}
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