src/com/android/settings/wifi/details/WifiDetailPreferenceController.java

   1 /*
   2  * Copyright (C) 2017 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 package com.android.settings.wifi.details;
  17
  18 import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL;
  19 import static android.net.NetworkCapabilities.NET_CAPABILITY_PARTIAL_CONNECTIVITY;
  20 import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;
  21 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
  22
  23 import android.app.Activity;
  24 import android.app.AlertDialog;
  25 import android.app.settings.SettingsEnums;
  26 import android.content.BroadcastReceiver;
  27 import android.content.Context;
  28 import android.content.Intent;
  29 import android.content.IntentFilter;
  30 import android.graphics.Bitmap;
  31 import android.graphics.drawable.BitmapDrawable;
  32 import android.graphics.drawable.Drawable;
  33 import android.graphics.drawable.VectorDrawable;
  34 import android.net.ConnectivityManager;
  35 import android.net.ConnectivityManager.NetworkCallback;
  36 import android.net.LinkAddress;
  37 import android.net.LinkProperties;
  38 import android.net.Network;
  39 import android.net.NetworkCapabilities;
  40 import android.net.NetworkInfo;
  41 import android.net.NetworkRequest;
  42 import android.net.NetworkUtils;
  43 import android.net.RouteInfo;
  44 import android.net.wifi.WifiConfiguration;
  45 import android.net.wifi.WifiInfo;
  46 import android.net.wifi.WifiManager;
  47 import android.os.CountDownTimer;
  48 import android.os.Handler;
  49 import android.text.TextUtils;
  50 import android.util.FeatureFlagUtils;
  51 import android.util.Log;
  52 import android.widget.ImageView;
  53 import android.widget.Toast;
  54
  55 import androidx.annotation.VisibleForTesting;
  56 import androidx.core.text.BidiFormatter;
  57 import androidx.fragment.app.Fragment;
  58 import androidx.preference.Preference;
  59 import androidx.preference.PreferenceCategory;
  60 import androidx.preference.PreferenceFragmentCompat;
  61 import androidx.preference.PreferenceScreen;
  62
  63 import com.android.settings.R;
  64 import com.android.settings.Utils;
  65 import com.android.settings.core.FeatureFlags;
  66 import com.android.settings.core.PreferenceControllerMixin;
  67 import com.android.settings.datausage.WifiDataUsageSummaryPreferenceController;
  68 import com.android.settings.development.featureflags.FeatureFlagPersistent;
  69 import com.android.settings.widget.EntityHeaderController;
  70 import com.android.settings.wifi.WifiDialog;
  71 import com.android.settings.wifi.WifiDialog.WifiDialogListener;
  72 import com.android.settings.wifi.WifiUtils;
  73 import com.android.settings.wifi.dpp.WifiDppUtils;
  74 import com.android.settingslib.core.AbstractPreferenceController;
  75 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
  76 import com.android.settingslib.core.lifecycle.Lifecycle;
  77 import com.android.settingslib.core.lifecycle.LifecycleObserver;
  78 import com.android.settingslib.core.lifecycle.events.OnPause;
  79 import com.android.settingslib.core.lifecycle.events.OnResume;
  80 import com.android.settingslib.widget.ActionButtonsPreference;
  81 import com.android.settingslib.widget.LayoutPreference;
  82 import com.android.settingslib.wifi.AccessPoint;
  83 import com.android.settingslib.wifi.WifiTracker;
  84 import com.android.settingslib.wifi.WifiTrackerFactory;
  85
  86 import java.net.Inet4Address;
  87 import java.net.Inet6Address;
  88 import java.net.InetAddress;
  89 import java.net.UnknownHostException;
  90 import java.time.Duration;
  91 import java.util.StringJoiner;
  92 import java.util.stream.Collectors;
  93
  94 /**
  95  * Controller for logic pertaining to displaying Wifi information for the
  96  * {@link WifiNetworkDetailsFragment}.
  97  */
  98 public class WifiDetailPreferenceController extends AbstractPreferenceController
  99         implements PreferenceControllerMixin, WifiDialogListener, LifecycleObserver, OnPause,
 100         OnResume {
 101
 102     private static final String TAG = "WifiDetailsPrefCtrl";
 103     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
 104
 105     @VisibleForTesting
 106     static final String KEY_HEADER = "connection_header";
 107     @VisibleForTesting
 108     static final String KEY_DATA_USAGE_HEADER = "status_header";
 109     @VisibleForTesting
 110     static final String KEY_BUTTONS_PREF = "buttons";
 111     @VisibleForTesting
 112     static final String KEY_SIGNAL_STRENGTH_PREF = "signal_strength";
 113     @VisibleForTesting
 114     static final String KEY_TX_LINK_SPEED = "tx_link_speed";
 115     @VisibleForTesting
 116     static final String KEY_RX_LINK_SPEED = "rx_link_speed";
 117     @VisibleForTesting
 118     static final String KEY_FREQUENCY_PREF = "frequency";
 119     @VisibleForTesting
 120     static final String KEY_SECURITY_PREF = "security";
 121     @VisibleForTesting
 122     static final String KEY_SSID_PREF = "ssid";
 123     @VisibleForTesting
 124     static final String KEY_MAC_ADDRESS_PREF = "mac_address";
 125     @VisibleForTesting
 126     static final String KEY_IP_ADDRESS_PREF = "ip_address";
 127     @VisibleForTesting
 128     static final String KEY_GATEWAY_PREF = "gateway";
 129     @VisibleForTesting
 130     static final String KEY_SUBNET_MASK_PREF = "subnet_mask";
 131     @VisibleForTesting
 132     static final String KEY_DNS_PREF = "dns";
 133     @VisibleForTesting
 134     static final String KEY_IPV6_CATEGORY = "ipv6_category";
 135     @VisibleForTesting
 136     static final String KEY_IPV6_ADDRESSES_PREF = "ipv6_addresses";
 137
 138     private static final int STATE_NONE = 1;
 139     private static final int STATE_ENABLE_WIFI = 2;
 140     private static final int STATE_ENABLE_WIFI_FAILED = 3;
 141     private static final int STATE_CONNECTING = 4;
 142     private static final int STATE_CONNECTED = 5;
 143     private static final int STATE_FAILED = 6;
 144     private static final int STATE_NOT_IN_RANGE = 7;
 145     private static final int STATE_DISCONNECTED = 8;
 146     private static final long TIMEOUT = Duration.ofSeconds(10).toMillis();
 147
 148     // Be static to avoid too much object not be reset.
 149     @VisibleForTesting
 150     static CountDownTimer mTimer;
 151
 152     private AccessPoint mAccessPoint;
 153     private final ConnectivityManager mConnectivityManager;
 154     private final Fragment mFragment;
 155     private final Handler mHandler;
 156     private LinkProperties mLinkProperties;
 157     private Network mNetwork;
 158     private NetworkInfo mNetworkInfo;
 159     private NetworkCapabilities mNetworkCapabilities;
 160     private int mRssiSignalLevel = -1;
 161     private String[] mSignalStr;
 162     private WifiConfiguration mWifiConfig;
 163     private WifiInfo mWifiInfo;
 164     private final WifiManager mWifiManager;
 165     private final WifiTracker mWifiTracker;
 166     private final MetricsFeatureProvider mMetricsFeatureProvider;
 167     private boolean mIsOutOfRange;
 168     private boolean mIsEphemeral;
 169     private boolean mConnected;
 170     private int mConnectingState;
 171     private WifiManager.ActionListener mConnectListener;
 172
 173     // UI elements - in order of appearance
 174     private ActionButtonsPreference mButtonsPref;
 175     private EntityHeaderController mEntityHeaderController;
 176     private Preference mSignalStrengthPref;
 177     private Preference mTxLinkSpeedPref;
 178     private Preference mRxLinkSpeedPref;
 179     private Preference mFrequencyPref;
 180     private Preference mSecurityPref;
 181     private Preference mSsidPref;
 182     private Preference mMacAddressPref;
 183     private Preference mIpAddressPref;
 184     private Preference mGatewayPref;
 185     private Preference mSubnetPref;
 186     private Preference mDnsPref;
 187     private PreferenceCategory mIpv6Category;
 188     private Preference mIpv6AddressPref;
 189     private Lifecycle mLifecycle;
 190     Preference mDataUsageSummaryPref;
 191     WifiDataUsageSummaryPreferenceController mSummaryHeaderController;
 192
 193     private final IconInjector mIconInjector;
 194     private final IntentFilter mFilter;
 195     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
 196         @Override
 197         public void onReceive(Context context, Intent intent) {
 198             switch (intent.getAction()) {
 199                 case WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION:
 200                     if (!intent.getBooleanExtra(WifiManager.EXTRA_MULTIPLE_NETWORKS_CHANGED,
 201                             false /* defaultValue */)) {
 202                         // only one network changed
 203                         WifiConfiguration wifiConfiguration = intent
 204                                 .getParcelableExtra(WifiManager.EXTRA_WIFI_CONFIGURATION);
 205                         if (mAccessPoint.matches(wifiConfiguration)) {
 206                             mWifiConfig = wifiConfiguration;
 207                         }
 208                     }
 209                     // fall through
 210                 case WifiManager.NETWORK_STATE_CHANGED_ACTION:
 211                 case WifiManager.RSSI_CHANGED_ACTION:
 212                     refreshPage();
 213                     break;
 214             }
 215         }
 216     };
 217
 218     private final NetworkRequest mNetworkRequest = new NetworkRequest.Builder()
 219             .clearCapabilities().addTransportType(TRANSPORT_WIFI).build();
 220
 221     // Must be run on the UI thread since it directly manipulates UI state.
 222     private final NetworkCallback mNetworkCallback = new NetworkCallback() {
 223         @Override
 224         public void onLinkPropertiesChanged(Network network, LinkProperties lp) {
 225             if (network.equals(mNetwork) && !lp.equals(mLinkProperties)) {
 226                 mLinkProperties = lp;
 227                 refreshIpLayerInfo();
 228             }
 229         }
 230
 231         private boolean hasCapabilityChanged(NetworkCapabilities nc, int cap) {
 232             // If this is the first time we get NetworkCapabilities, report that something changed.
 233             if (mNetworkCapabilities == null) return true;
 234
 235             // nc can never be null, see ConnectivityService#callCallbackForRequest.
 236             return mNetworkCapabilities.hasCapability(cap) != nc.hasCapability(cap);
 237         }
 238
 239         @Override
 240         public void onCapabilitiesChanged(Network network, NetworkCapabilities nc) {
 241             // If the network just validated or lost Internet access or detected partial internet
 242             // connectivity, refresh network state. Don't do this on every NetworkCapabilities
 243             // change because refreshNetworkState sends IPCs to the system server from the UI
 244             // thread, which can cause jank.
 245             if (network.equals(mNetwork) && !nc.equals(mNetworkCapabilities)) {
 246                 if (hasCapabilityChanged(nc, NET_CAPABILITY_VALIDATED)
 247                         || hasCapabilityChanged(nc, NET_CAPABILITY_CAPTIVE_PORTAL)
 248                         || hasCapabilityChanged(nc, NET_CAPABILITY_PARTIAL_CONNECTIVITY)) {
 249                     mAccessPoint.update(mWifiConfig, mWifiInfo, mNetworkInfo);
 250                     refreshEntityHeader();
 251                 }
 252                 mNetworkCapabilities = nc;
 253                 refreshButtons();
 254                 refreshIpLayerInfo();
 255             }
 256         }
 257
 258         @Override
 259         public void onLost(Network network) {
 260             // Ephemeral network not a saved network, leave detail page once disconnected
 261             if (mIsEphemeral && network.equals(mNetwork)) {
 262                 exitActivity();
 263             }
 264         }
 265     };
 266
 267     @VisibleForTesting
 268     final WifiTracker.WifiListener mWifiListener = new WifiTracker.WifiListener() {
 269         /** Called when the state of Wifi has changed. */
 270         public void onWifiStateChanged(int state) {
 271             Log.d(TAG, "onWifiStateChanged(" + state + ")");
 272             if (mConnectingState == STATE_ENABLE_WIFI && state == WifiManager.WIFI_STATE_ENABLED) {
 273                 updateConnectingState(STATE_CONNECTING);
 274             } else if (mConnectingState != STATE_NONE && state == WifiManager.WIFI_STATE_DISABLED) {
 275                 // update as disconnected once Wi-Fi disabled since may not received
 276                 // onConnectedChanged for this case.
 277                 updateConnectingState(STATE_DISCONNECTED);
 278             }
 279         }
 280
 281         /** Called when the connection state of wifi has changed. */
 282         public void onConnectedChanged() {
 283             refreshPage();
 284         }
 285
 286         /**
 287          * Called to indicate the list of AccessPoints has been updated and
 288          * {@link WifiTracker#getAccessPoints()} should be called to get the updated list.
 289          */
 290         public void onAccessPointsChanged() {
 291             refreshPage();
 292         }
 293     };
 294
 295     public static WifiDetailPreferenceController newInstance(
 296             AccessPoint accessPoint,
 297             ConnectivityManager connectivityManager,
 298             Context context,
 299             Fragment fragment,
 300             Handler handler,
 301             Lifecycle lifecycle,
 302             WifiManager wifiManager,
 303             MetricsFeatureProvider metricsFeatureProvider) {
 304         return new WifiDetailPreferenceController(
 305                 accessPoint, connectivityManager, context, fragment, handler, lifecycle,
 306                 wifiManager, metricsFeatureProvider, new IconInjector(context));
 307     }
 308
 309     @VisibleForTesting
 310         /* package */ WifiDetailPreferenceController(
 311             AccessPoint accessPoint,
 312             ConnectivityManager connectivityManager,
 313             Context context,
 314             Fragment fragment,
 315             Handler handler,
 316             Lifecycle lifecycle,
 317             WifiManager wifiManager,
 318             MetricsFeatureProvider metricsFeatureProvider,
 319             IconInjector injector) {
 320         super(context);
 321
 322         mAccessPoint = accessPoint;
 323         mConnectivityManager = connectivityManager;
 324         mFragment = fragment;
 325         mHandler = handler;
 326         mSignalStr = context.getResources().getStringArray(R.array.wifi_signal);
 327         mWifiConfig = accessPoint.getConfig();
 328         mWifiManager = wifiManager;
 329         mMetricsFeatureProvider = metricsFeatureProvider;
 330         mIconInjector = injector;
 331
 332         mFilter = new IntentFilter();
 333         mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
 334         mFilter.addAction(WifiManager.RSSI_CHANGED_ACTION);
 335         mFilter.addAction(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION);
 336
 337         mLifecycle = lifecycle;
 338         lifecycle.addObserver(this);
 339
 340         mWifiTracker = WifiTrackerFactory.create(
 341                 mFragment.getActivity(),
 342                 mWifiListener,
 343                 mLifecycle,
 344                 true /*includeSaved*/,
 345                 true /*includeScans*/);
 346         mConnected = mAccessPoint.isActive();
 347         // When lost the network connection, WifiInfo/NetworkInfo will be clear. So causes we
 348         // could not check if the AccessPoint is ephemeral. Need to cache it in first.
 349         mIsEphemeral = mAccessPoint.isEphemeral();
 350         mConnectingState = STATE_NONE;
 351         mConnectListener = new WifiManager.ActionListener() {
 352             @Override
 353             public void onSuccess() {
 354                 // Do nothing
 355             }
 356
 357             @Override
 358             public void onFailure(int reason) {
 359                 updateConnectingState(STATE_FAILED);
 360             }
 361         };
 362     }
 363
 364     @Override
 365     public boolean isAvailable() {
 366         return true;
 367     }
 368
 369     @Override
 370     public String getPreferenceKey() {
 371         // Returns null since this controller contains more than one Preference
 372         return null;
 373     }
 374
 375     @Override
 376     public void displayPreference(PreferenceScreen screen) {
 377         super.displayPreference(screen);
 378
 379         setupEntityHeader(screen);
 380
 381         mButtonsPref = ((ActionButtonsPreference) screen.findPreference(KEY_BUTTONS_PREF))
 382                 .setButton1Text(R.string.forget)
 383                 .setButton1Icon(R.drawable.ic_settings_delete)
 384                 .setButton1OnClickListener(view -> forgetNetwork())
 385                 .setButton2Text(R.string.wifi_sign_in_button_text)
 386                 .setButton2Icon(R.drawable.ic_settings_sign_in)
 387                 .setButton2OnClickListener(view -> signIntoNetwork())
 388                 .setButton3Text(R.string.wifi_connect)
 389                 .setButton3Icon(R.drawable.ic_settings_wireless)
 390                 .setButton3OnClickListener(view -> connectNetwork())
 391                 .setButton3Enabled(true)
 392                 .setButton4Text(R.string.share)
 393                 .setButton4Icon(R.drawable.ic_qrcode_24dp)
 394                 .setButton4OnClickListener(view -> shareNetwork());
 395
 396         mSignalStrengthPref = screen.findPreference(KEY_SIGNAL_STRENGTH_PREF);
 397         mTxLinkSpeedPref = screen.findPreference(KEY_TX_LINK_SPEED);
 398         mRxLinkSpeedPref = screen.findPreference(KEY_RX_LINK_SPEED);
 399         mFrequencyPref = screen.findPreference(KEY_FREQUENCY_PREF);
 400         mSecurityPref = screen.findPreference(KEY_SECURITY_PREF);
 401
 402         mSsidPref = screen.findPreference(KEY_SSID_PREF);
 403         mMacAddressPref = screen.findPreference(KEY_MAC_ADDRESS_PREF);
 404         mIpAddressPref = screen.findPreference(KEY_IP_ADDRESS_PREF);
 405         mGatewayPref = screen.findPreference(KEY_GATEWAY_PREF);
 406         mSubnetPref = screen.findPreference(KEY_SUBNET_MASK_PREF);
 407         mDnsPref = screen.findPreference(KEY_DNS_PREF);
 408
 409         mIpv6Category = screen.findPreference(KEY_IPV6_CATEGORY);
 410         mIpv6AddressPref = screen.findPreference(KEY_IPV6_ADDRESSES_PREF);
 411
 412         mSecurityPref.setSummary(mAccessPoint.getSecurityString(/* concise */ false));
 413     }
 414
 415     private void setupEntityHeader(PreferenceScreen screen) {
 416         LayoutPreference headerPref = screen.findPreference(KEY_HEADER);
 417
 418         if (usingDataUsageHeader(mContext)) {
 419             headerPref.setVisible(false);
 420             mDataUsageSummaryPref = screen.findPreference(KEY_DATA_USAGE_HEADER);
 421             mDataUsageSummaryPref.setVisible(true);
 422             mSummaryHeaderController =
 423                 new WifiDataUsageSummaryPreferenceController(mFragment.getActivity(),
 424                         mLifecycle, (PreferenceFragmentCompat) mFragment, mAccessPoint.getSsid());
 425             return;
 426         }
 427
 428         mEntityHeaderController =
 429                 EntityHeaderController.newInstance(
 430                         mFragment.getActivity(), mFragment,
 431                         headerPref.findViewById(R.id.entity_header));
 432
 433         ImageView iconView = headerPref.findViewById(R.id.entity_header_icon);
 434
 435         iconView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
 436
 437         mEntityHeaderController.setLabel(mAccessPoint.getTitle());
 438     }
 439
 440     private void refreshEntityHeader() {
 441         if (usingDataUsageHeader(mContext)) {
 442             mSummaryHeaderController.updateState(mDataUsageSummaryPref);
 443         } else {
 444             mEntityHeaderController.setSummary(mAccessPoint.getSettingsSummary())
 445                     .done(mFragment.getActivity(), true /* rebind */);
 446         }
 447     }
 448
 449     private void updateNetworkInfo() {
 450         mNetwork = mWifiManager.getCurrentNetwork();
 451         mLinkProperties = mConnectivityManager.getLinkProperties(mNetwork);
 452         mNetworkCapabilities = mConnectivityManager.getNetworkCapabilities(mNetwork);
 453     }
 454
 455     @Override
 456     public void onResume() {
 457         // Ensure mNetwork is set before any callbacks above are delivered, since our
 458         // NetworkCallback only looks at changes to mNetwork.
 459         updateNetworkInfo();
 460         refreshPage();
 461         mContext.registerReceiver(mReceiver, mFilter);
 462         mConnectivityManager.registerNetworkCallback(mNetworkRequest, mNetworkCallback,
 463                 mHandler);
 464     }
 465
 466     @Override
 467     public void onPause() {
 468         mNetwork = null;
 469         mLinkProperties = null;
 470         mNetworkCapabilities = null;
 471         mNetworkInfo = null;
 472         mWifiInfo = null;
 473         mContext.unregisterReceiver(mReceiver);
 474         mConnectivityManager.unregisterNetworkCallback(mNetworkCallback);
 475     }
 476
 477     private void refreshPage() {
 478         if(!updateAccessPoint()) {
 479             return;
 480         }
 481
 482         Log.d(TAG, "Update UI!");
 483
 484         // refresh header
 485         refreshEntityHeader();
 486
 487         // refresh Buttons
 488         refreshButtons();
 489
 490         // Update Connection Header icon and Signal Strength Preference
 491         refreshRssiViews();
 492         // Frequency Pref
 493         refreshFrequency();
 494         // Transmit Link Speed Pref
 495         refreshTxSpeed();
 496         // Receive Link Speed Pref
 497         refreshRxSpeed();
 498         // IP related information
 499         refreshIpLayerInfo();
 500         // SSID Pref
 501         refreshSsid();
 502         // MAC Address Pref
 503         refreshMacAddress();
 504     }
 505
 506     @VisibleForTesting
 507     boolean updateAccessPoint() {
 508         boolean changed = false;
 509         // remember mIsOutOfRange as old before updated
 510         boolean oldState = mIsOutOfRange;
 511         updateAccessPointFromScannedList();
 512
 513         if (mAccessPoint.isActive()) {
 514             updateNetworkInfo();
 515             mNetworkInfo = mConnectivityManager.getNetworkInfo(mNetwork);
 516             mWifiInfo = mWifiManager.getConnectionInfo();
 517             if (mNetwork == null || mNetworkInfo == null || mWifiInfo == null) {
 518                 // Once connected, can't get mNetwork immediately, return false and wait for
 519                 // next time to update UI. also reset {@code mIsOutOfRange}
 520                 mIsOutOfRange = oldState;
 521                 return false;
 522             }
 523             changed |= mAccessPoint.update(mWifiConfig, mWifiInfo, mNetworkInfo);
 524         }
 525
 526         // signal level changed
 527         changed |= mRssiSignalLevel != mAccessPoint.getLevel();
 528         // In/Out of range changed
 529         changed |= oldState != mIsOutOfRange;
 530         // connect state changed
 531         if (mConnected != mAccessPoint.isActive()) {
 532             mConnected = mAccessPoint.isActive();
 533             changed = true;
 534             updateConnectingState(mAccessPoint.isActive() ? STATE_CONNECTED : STATE_DISCONNECTED);
 535         }
 536
 537         return changed;
 538     }
 539
 540     private void updateAccessPointFromScannedList() {
 541         mIsOutOfRange = true;
 542
 543         for (AccessPoint ap : mWifiTracker.getAccessPoints()) {
 544             if (mAccessPoint.matches(ap)) {
 545                 mAccessPoint = ap;
 546                 mWifiConfig = ap.getConfig();
 547                 mIsOutOfRange = !mAccessPoint.isReachable();
 548                 return;
 549             }
 550         }
 551     }
 552
 553     private void exitActivity() {
 554         if (DEBUG) {
 555             Log.d(TAG, "Exiting the WifiNetworkDetailsPage");
 556         }
 557         mFragment.getActivity().finish();
 558     }
 559
 560     private void refreshRssiViews() {
 561         int signalLevel = mAccessPoint.getLevel();
 562
 563         // Disappears signal view if not in range. e.g. for saved networks.
 564         if (mIsOutOfRange) {
 565             mSignalStrengthPref.setVisible(false);
 566             mRssiSignalLevel = -1;
 567             return;
 568         }
 569
 570         if (mRssiSignalLevel == signalLevel) {
 571             return;
 572         }
 573         mRssiSignalLevel = signalLevel;
 574         Drawable wifiIcon = mIconInjector.getIcon(mRssiSignalLevel);
 575
 576         if (mEntityHeaderController != null) {
 577             mEntityHeaderController
 578                     .setIcon(redrawIconForHeader(wifiIcon)).done(mFragment.getActivity(),
 579                             true /* rebind */);
 580         }
 581
 582         Drawable wifiIconDark = wifiIcon.getConstantState().newDrawable().mutate();
 583         wifiIconDark.setTintList(Utils.getColorAttr(mContext, android.R.attr.colorControlNormal));
 584         mSignalStrengthPref.setIcon(wifiIconDark);
 585
 586         mSignalStrengthPref.setSummary(mSignalStr[mRssiSignalLevel]);
 587         mSignalStrengthPref.setVisible(true);
 588     }
 589
 590     private Drawable redrawIconForHeader(Drawable original) {
 591         final int iconSize = mContext.getResources().getDimensionPixelSize(
 592                 R.dimen.wifi_detail_page_header_image_size);
 593         final int actualWidth = original.getMinimumWidth();
 594         final int actualHeight = original.getMinimumHeight();
 595
 596         if ((actualWidth == iconSize && actualHeight == iconSize)
 597                 || !VectorDrawable.class.isInstance(original)) {
 598             return original;
 599         }
 600
 601         // clear tint list to make sure can set 87% black after enlarge
 602         original.setTintList(null);
 603
 604         // enlarge icon size
 605         final Bitmap bitmap = Utils.createBitmap(original,
 606                 iconSize /*width*/,
 607                 iconSize /*height*/);
 608         Drawable newIcon = new BitmapDrawable(null /*resource*/, bitmap);
 609
 610         // config color for 87% black after enlarge
 611         newIcon.setTintList(Utils.getColorAttr(mContext, android.R.attr.textColorPrimary));
 612
 613         return newIcon;
 614     }
 615
 616     private void refreshFrequency() {
 617         if (mWifiInfo == null) {
 618             mFrequencyPref.setVisible(false);
 619             return;
 620         }
 621
 622         final int frequency = mWifiInfo.getFrequency();
 623         String band = null;
 624         if (frequency >= AccessPoint.LOWER_FREQ_24GHZ
 625                 && frequency < AccessPoint.HIGHER_FREQ_24GHZ) {
 626             band = mContext.getResources().getString(R.string.wifi_band_24ghz);
 627         } else if (frequency >= AccessPoint.LOWER_FREQ_5GHZ
 628                 && frequency < AccessPoint.HIGHER_FREQ_5GHZ) {
 629             band = mContext.getResources().getString(R.string.wifi_band_5ghz);
 630         } else {
 631             Log.e(TAG, "Unexpected frequency " + frequency);
 632             // Connecting state is unstable, make it disappeared if unexpected
 633             if (mConnectingState == STATE_CONNECTING) {
 634                 mFrequencyPref.setVisible(false);
 635             }
 636             return;
 637         }
 638         mFrequencyPref.setSummary(band);
 639         mFrequencyPref.setVisible(true);
 640     }
 641
 642     private void refreshTxSpeed() {
 643         if (mWifiInfo == null) {
 644             mTxLinkSpeedPref.setVisible(false);
 645             return;
 646         }
 647
 648         int txLinkSpeedMbps = mWifiInfo.getTxLinkSpeedMbps();
 649         mTxLinkSpeedPref.setVisible(txLinkSpeedMbps >= 0);
 650         mTxLinkSpeedPref.setSummary(mContext.getString(
 651                 R.string.tx_link_speed, mWifiInfo.getTxLinkSpeedMbps()));
 652     }
 653
 654     private void refreshRxSpeed() {
 655         if (mWifiInfo == null) {
 656             mRxLinkSpeedPref.setVisible(false);
 657             return;
 658         }
 659
 660         int rxLinkSpeedMbps = mWifiInfo.getRxLinkSpeedMbps();
 661         mRxLinkSpeedPref.setVisible(rxLinkSpeedMbps >= 0);
 662         mRxLinkSpeedPref.setSummary(mContext.getString(
 663                 R.string.rx_link_speed, mWifiInfo.getRxLinkSpeedMbps()));
 664     }
 665
 666     private void refreshSsid() {
 667         if (mAccessPoint.isPasspoint() || mAccessPoint.isOsuProvider()) {
 668             mSsidPref.setVisible(true);
 669             mSsidPref.setSummary(mAccessPoint.getSsidStr());
 670         } else {
 671             mSsidPref.setVisible(false);
 672         }
 673     }
 674
 675     private void refreshMacAddress() {
 676         String macAddress = getMacAddress();
 677         if (macAddress == null) {
 678             mMacAddressPref.setVisible(false);
 679             return;
 680         }
 681
 682         mMacAddressPref.setVisible(true);
 683         mMacAddressPref.setSummary(macAddress);
 684     }
 685
 686     private String getMacAddress() {
 687         if (mWifiInfo != null) {
 688             // get MAC address from connected network information
 689             return mWifiInfo.getMacAddress();
 690         }
 691
 692         // return randomized MAC address
 693         if (mWifiConfig != null &&
 694                 mWifiConfig.macRandomizationSetting == WifiConfiguration.RANDOMIZATION_PERSISTENT) {
 695             return mWifiConfig.getRandomizedMacAddress().toString();
 696         }
 697
 698         // return device MAC address
 699         final String[] macAddresses = mWifiManager.getFactoryMacAddresses();
 700         if (macAddresses != null && macAddresses.length > 0) {
 701             return macAddresses[0];
 702         }
 703
 704         Log.e(TAG, "Can't get device MAC address!");
 705         return null;
 706     }
 707
 708     private void updatePreference(Preference pref, String detailText) {
 709         if (!TextUtils.isEmpty(detailText)) {
 710             pref.setSummary(detailText);
 711             pref.setVisible(true);
 712         } else {
 713             pref.setVisible(false);
 714         }
 715     }
 716
 717     private void refreshButtons() {
 718         // Ephemeral network won't be removed permanently, but be putted in blacklist.
 719         mButtonsPref.setButton1Text(
 720                 mIsEphemeral ? R.string.wifi_disconnect_button_text : R.string.forget);
 721
 722         boolean canForgetNetwork = canForgetNetwork();
 723         boolean canSignIntoNetwork = canSignIntoNetwork();
 724         boolean canConnectNetwork = canConnectNetwork();
 725         boolean canShareNetwork = canShareNetwork();
 726
 727         mButtonsPref.setButton1Visible(canForgetNetwork);
 728         mButtonsPref.setButton2Visible(canSignIntoNetwork);
 729         mButtonsPref.setButton3Visible(canConnectNetwork);
 730         mButtonsPref.setButton4Visible(canShareNetwork);
 731         mButtonsPref.setVisible(canForgetNetwork
 732                 || canSignIntoNetwork
 733                 || canConnectNetwork
 734                 || canShareNetwork);
 735     }
 736
 737     private boolean canConnectNetwork() {
 738         // Display connect button for disconnected AP even not in the range.
 739         return !mAccessPoint.isActive();
 740     }
 741
 742     private void refreshIpLayerInfo() {
 743         // Hide IP layer info if not a connected network.
 744         if (!mAccessPoint.isActive() || mNetwork == null || mLinkProperties == null) {
 745             mIpAddressPref.setVisible(false);
 746             mSubnetPref.setVisible(false);
 747             mGatewayPref.setVisible(false);
 748             mDnsPref.setVisible(false);
 749             mIpv6Category.setVisible(false);
 750             return;
 751         }
 752
 753         // Find IPv4 and IPv6 addresses.
 754         String ipv4Address = null;
 755         String subnet = null;
 756         StringJoiner ipv6Addresses = new StringJoiner("\n");
 757
 758         for (LinkAddress addr : mLinkProperties.getLinkAddresses()) {
 759             if (addr.getAddress() instanceof Inet4Address) {
 760                 ipv4Address = addr.getAddress().getHostAddress();
 761                 subnet = ipv4PrefixLengthToSubnetMask(addr.getPrefixLength());
 762             } else if (addr.getAddress() instanceof Inet6Address) {
 763                 ipv6Addresses.add(addr.getAddress().getHostAddress());
 764             }
 765         }
 766
 767         // Find IPv4 default gateway.
 768         String gateway = null;
 769         for (RouteInfo routeInfo : mLinkProperties.getRoutes()) {
 770             if (routeInfo.isIPv4Default() && routeInfo.hasGateway()) {
 771                 gateway = routeInfo.getGateway().getHostAddress();
 772                 break;
 773             }
 774         }
 775
 776         // Find all (IPv4 and IPv6) DNS addresses.
 777         String dnsServers = mLinkProperties.getDnsServers().stream()
 778                 .map(InetAddress::getHostAddress)
 779                 .collect(Collectors.joining("\n"));
 780
 781         // Update UI.
 782         updatePreference(mIpAddressPref, ipv4Address);
 783         updatePreference(mSubnetPref, subnet);
 784         updatePreference(mGatewayPref, gateway);
 785         updatePreference(mDnsPref, dnsServers);
 786
 787         if (ipv6Addresses.length() > 0) {
 788             mIpv6AddressPref.setSummary(
 789                     BidiFormatter.getInstance().unicodeWrap(ipv6Addresses.toString()));
 790             mIpv6Category.setVisible(true);
 791         } else {
 792             mIpv6Category.setVisible(false);
 793         }
 794     }
 795
 796     private static String ipv4PrefixLengthToSubnetMask(int prefixLength) {
 797         try {
 798             InetAddress all = InetAddress.getByAddress(
 799                     new byte[]{(byte) 255, (byte) 255, (byte) 255, (byte) 255});
 800             return NetworkUtils.getNetworkPart(all, prefixLength).getHostAddress();
 801         } catch (UnknownHostException e) {
 802             return null;
 803         }
 804     }
 805
 806     /**
 807      * Returns whether the network represented by this preference can be forgotten.
 808      */
 809     private boolean canForgetNetwork() {
 810         return (mWifiInfo != null && mWifiInfo.isEphemeral()) || canModifyNetwork()
 811                 || mAccessPoint.isPasspoint() || mAccessPoint.isPasspointConfig();
 812     }
 813
 814     /**
 815      * Returns whether the network represented by this preference can be modified.
 816      */
 817     public boolean canModifyNetwork() {
 818         return mWifiConfig != null && !WifiUtils.isNetworkLockedDown(mContext, mWifiConfig);
 819     }
 820
 821     /**
 822      * Returns whether the user can sign into the network represented by this preference.
 823      */
 824     private boolean canSignIntoNetwork() {
 825         return mAccessPoint.isActive() && WifiUtils.canSignIntoNetwork(mNetworkCapabilities);
 826     }
 827
 828     /**
 829      * Returns whether the user can share the network represented by this preference with QR code.
 830      */
 831     private boolean canShareNetwork() {
 832         return mAccessPoint.getConfig() != null &&
 833                 WifiDppUtils.isSupportConfiguratorQrCodeGenerator(mContext, mAccessPoint);
 834     }
 835
 836     /**
 837      * Forgets the wifi network associated with this preference.
 838      */
 839     private void forgetNetwork() {
 840         if (mWifiInfo != null && mWifiInfo.isEphemeral()) {
 841             mWifiManager.disableEphemeralNetwork(mWifiInfo.getSSID());
 842         } else if (mAccessPoint.isPasspoint() || mAccessPoint.isPasspointConfig()) {
 843             // Post a dialog to confirm if user really want to forget the passpoint network.
 844             if (FeatureFlagPersistent.isEnabled(mContext, FeatureFlags.NETWORK_INTERNET_V2)) {
 845                 showConfirmForgetDialog();
 846                 return;
 847             }
 848
 849             try {
 850                 mWifiManager.removePasspointConfiguration(mAccessPoint.getPasspointFqdn());
 851             } catch (RuntimeException e) {
 852                 Log.e(TAG, "Failed to remove Passpoint configuration for "
 853                         + mAccessPoint.getPasspointFqdn());
 854             }
 855         } else if (mWifiConfig != null) {
 856             mWifiManager.forget(mWifiConfig.networkId, null /* action listener */);
 857         }
 858
 859         mMetricsFeatureProvider.action(
 860                 mFragment.getActivity(), SettingsEnums.ACTION_WIFI_FORGET);
 861         mFragment.getActivity().finish();
 862     }
 863
 864     @VisibleForTesting
 865     protected void showConfirmForgetDialog() {
 866         final AlertDialog dialog = new AlertDialog.Builder(mContext)
 867                 .setPositiveButton(R.string.forget, ((dialog1, which) -> {
 868                     try {
 869                         mWifiManager.removePasspointConfiguration(mAccessPoint.getPasspointFqdn());
 870                     } catch (RuntimeException e) {
 871                         Log.e(TAG, "Failed to remove Passpoint configuration for "
 872                                 + mAccessPoint.getPasspointFqdn());
 873                     }
 874                     mMetricsFeatureProvider.action(
 875                             mFragment.getActivity(), SettingsEnums.ACTION_WIFI_FORGET);
 876                     mFragment.getActivity().finish();
 877                 }))
 878                 .setNegativeButton(R.string.cancel, null /* listener */)
 879                 .setTitle(R.string.wifi_forget_dialog_title)
 880                 .setMessage(R.string.forget_passpoint_dialog_message)
 881                 .create();
 882         dialog.show();
 883     }
 884
 885     /**
 886      * Show QR code to share the network represented by this preference.
 887      */
 888     private void launchWifiDppConfiguratorActivity() {
 889         final Intent intent = WifiDppUtils.getConfiguratorQrCodeGeneratorIntentOrNull(mContext,
 890                 mWifiManager, mAccessPoint);
 891
 892         if (intent == null) {
 893             Log.e(TAG, "Launch Wi-Fi DPP QR code generator with a wrong Wi-Fi network!");
 894         } else {
 895             mMetricsFeatureProvider.action(SettingsEnums.PAGE_UNKNOWN,
 896                     SettingsEnums.ACTION_SETTINGS_SHARE_WIFI_QR_CODE,
 897                     SettingsEnums.SETTINGS_WIFI_DPP_CONFIGURATOR,
 898                     /* key */ null,
 899                     /* value */ Integer.MIN_VALUE);
 900
 901             mContext.startActivity(intent);
 902         }
 903     }
 904
 905     /**
 906      * Share the wifi network with QR code.
 907      */
 908     private void shareNetwork() {
 909         WifiDppUtils.showLockScreen(mContext, () -> launchWifiDppConfiguratorActivity());
 910     }
 911
 912     /**
 913      * Sign in to the captive portal found on this wifi network associated with this preference.
 914      */
 915     private void signIntoNetwork() {
 916         mMetricsFeatureProvider.action(
 917                 mFragment.getActivity(), SettingsEnums.ACTION_WIFI_SIGNIN);
 918         mConnectivityManager.startCaptivePortalApp(mNetwork);
 919     }
 920
 921     @Override
 922     public void onSubmit(WifiDialog dialog) {
 923         if (dialog.getController() != null) {
 924             mWifiManager.save(dialog.getController().getConfig(), new WifiManager.ActionListener() {
 925                 @Override
 926                 public void onSuccess() {
 927                 }
 928
 929                 @Override
 930                 public void onFailure(int reason) {
 931                     Activity activity = mFragment.getActivity();
 932                     if (activity != null) {
 933                         Toast.makeText(activity,
 934                                 R.string.wifi_failed_save_message,
 935                                 Toast.LENGTH_SHORT).show();
 936                     }
 937                 }
 938             });
 939         }
 940     }
 941
 942     /**
 943      * Wrapper for testing compatibility.
 944      */
 945     @VisibleForTesting
 946     static class IconInjector {
 947         private final Context mContext;
 948
 949         public IconInjector(Context context) {
 950             mContext = context;
 951         }
 952
 953         public Drawable getIcon(int level) {
 954             return mContext.getDrawable(Utils.getWifiIconResource(level)).mutate();
 955         }
 956     }
 957
 958     private boolean usingDataUsageHeader(Context context) {
 959         return FeatureFlagUtils.isEnabled(context, FeatureFlags.WIFI_DETAILS_DATAUSAGE_HEADER);
 960     }
 961
 962     @VisibleForTesting
 963     void connectNetwork() {
 964         final Activity activity = mFragment.getActivity();
 965         // error handling, connected/saved network should have mWifiConfig.
 966         if (mWifiConfig == null) {
 967             Toast.makeText(activity,
 968                     R.string.wifi_failed_connect_message,
 969                     Toast.LENGTH_SHORT).show();
 970             return;
 971         }
 972
 973         // init state before connect
 974         mConnectingState = STATE_NONE;
 975
 976         if (mWifiManager.isWifiEnabled()) {
 977             updateConnectingState(STATE_CONNECTING);
 978         } else {
 979             // Enable Wi-Fi automatically to connect AP
 980             updateConnectingState(STATE_ENABLE_WIFI);
 981         }
 982     }
 983
 984     private void updateConnectingState(int state) {
 985         final Activity activity = mFragment.getActivity();
 986         Log.d(TAG, "updateConnectingState from " + mConnectingState + " to " + state);
 987         switch (mConnectingState) {
 988             case STATE_NONE:
 989             case STATE_ENABLE_WIFI:
 990                 if (state == STATE_ENABLE_WIFI) {
 991                     Log.d(TAG, "Turn on Wi-Fi automatically!");
 992                     updateConnectedButton(STATE_ENABLE_WIFI);
 993                     Toast.makeText(activity,
 994                             R.string.wifi_turned_on_message,
 995                             Toast.LENGTH_SHORT).show();
 996                     mWifiManager.setWifiEnabled(true);
 997                     // start timer for error handling
 998                     startTimer();
 999                 } else if (state == STATE_CONNECTING) {
1000                     Log.d(TAG, "connecting...");
1001                     updateConnectedButton(STATE_CONNECTING);
1002                     if (mAccessPoint.isPasspoint()) {
1003                         mWifiManager.connect(mWifiConfig, mConnectListener);
1004                     } else {
1005                         mWifiManager.connect(mWifiConfig.networkId, mConnectListener);
1006                     }
1007                     // start timer for error handling since framework didn't call back if failed
1008                     startTimer();
1009                 } else if (state == STATE_ENABLE_WIFI_FAILED) {
1010                     Log.e(TAG, "Wi-Fi failed to enable network!");
1011                     stopTimer();
1012                     // reset state
1013                     state = STATE_NONE;
1014                     Toast.makeText(activity,
1015                             R.string.wifi_failed_connect_message,
1016                             Toast.LENGTH_SHORT).show();
1017                     updateConnectedButton(STATE_ENABLE_WIFI_FAILED);
1018                 }
1019                 // Do not break here for disconnected event.
1020             case STATE_CONNECTED:
1021                 if (state == STATE_DISCONNECTED) {
1022                     Log.d(TAG, "disconnected");
1023                     // reset state
1024                     state = STATE_NONE;
1025                     updateConnectedButton(STATE_DISCONNECTED);
1026                     refreshPage();
1027                     // clear for getting MAC Address from saved configuration
1028                     mWifiInfo = null;
1029                 }
1030                 break;
1031             case STATE_CONNECTING:
1032                 if (state == STATE_CONNECTED) {
1033                     Log.d(TAG, "connected");
1034                     stopTimer();
1035                     updateConnectedButton(STATE_CONNECTED);
1036                     Toast.makeText(activity,
1037                             mContext.getString(R.string.wifi_connected_to_message,
1038                                     mAccessPoint.getTitle()),
1039                             Toast.LENGTH_SHORT).show();
1040
1041                     refreshPage();
1042                 } else if (state == STATE_NOT_IN_RANGE) {
1043                     Log.d(TAG, "AP not in range");
1044                     stopTimer();
1045                     // reset state
1046                     state = STATE_NONE;
1047                     Toast.makeText(activity,
1048                             R.string.wifi_not_in_range_message,
1049                             Toast.LENGTH_SHORT).show();
1050                     updateConnectedButton(STATE_NOT_IN_RANGE);
1051                 } else if (state == STATE_FAILED) {
1052                     Log.d(TAG, "failed");
1053                     stopTimer();
1054                     // reset state
1055                     state = STATE_NONE;
1056                     Toast.makeText(activity,
1057                             R.string.wifi_failed_connect_message,
1058                             Toast.LENGTH_SHORT).show();
1059                     updateConnectedButton(STATE_FAILED);
1060                 }
1061                 break;
1062             default:
1063                 Log.e(TAG, "Invalid state : " + mConnectingState);
1064                 // don't update invalid state
1065                 return;
1066         }
1067
1068         mConnectingState = state;
1069     }
1070
1071     private void updateConnectedButton(int state) {
1072         switch (state) {
1073             case STATE_ENABLE_WIFI:
1074             case STATE_CONNECTING:
1075                 mButtonsPref.setButton3Text(R.string.wifi_connecting)
1076                         .setButton3Enabled(false);
1077                 break;
1078             case STATE_CONNECTED:
1079                 // init button state and set as invisible
1080                 mButtonsPref.setButton3Text(R.string.wifi_connect)
1081                         .setButton3Icon(R.drawable.ic_settings_wireless)
1082                         .setButton3Enabled(true)
1083                         .setButton3Visible(false);
1084                 break;
1085             case STATE_DISCONNECTED:
1086             case STATE_NOT_IN_RANGE:
1087             case STATE_FAILED:
1088             case STATE_ENABLE_WIFI_FAILED:
1089                 mButtonsPref.setButton3Text(R.string.wifi_connect)
1090                         .setButton3Icon(R.drawable.ic_settings_wireless)
1091                         .setButton3Enabled(true)
1092                         .setButton3Visible(true);
1093                 break;
1094             default:
1095                 Log.e(TAG, "Invalid connect button state : " + state);
1096                 break;
1097         }
1098     }
1099
1100     private void startTimer() {
1101         if (mTimer != null) {
1102             stopTimer();
1103         }
1104
1105         mTimer = new CountDownTimer(TIMEOUT, TIMEOUT + 1) {
1106             @Override
1107             public void onTick(long millisUntilFinished) {
1108                 // Do nothing
1109             }
1110             @Override
1111             public void onFinish() {
1112                 Log.e(TAG, "Timeout for state:" + mConnectingState);
1113                 if (mConnectingState == STATE_ENABLE_WIFI) {
1114                     updateConnectingState(STATE_ENABLE_WIFI_FAILED);
1115                 } else if (mConnectingState == STATE_CONNECTING) {
1116                     updateAccessPointFromScannedList();
1117                     if (mIsOutOfRange) {
1118                         updateConnectingState(STATE_NOT_IN_RANGE);
1119                     } else {
1120                         updateConnectingState(STATE_FAILED);
1121                     }
1122                 }
1123             }
1124         };
1125         mTimer.start();
1126     }
1127
1128     private void stopTimer() {
1129         if (mTimer == null) return;
1130
1131         mTimer.cancel();
1132         mTimer = null;
1133     }
1134 }