1/* 2 * Copyright (C) 2015 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 17package com.android.settings.wifi; 18 19import android.content.Context; 20import android.content.DialogInterface; 21import android.content.Intent; 22import android.net.ConnectivityManager; 23import android.net.ConnectivityManager.NetworkCallback; 24import android.net.Network; 25import android.net.NetworkCapabilities; 26import android.net.NetworkInfo; 27import android.net.NetworkRequest; 28import android.os.Bundle; 29import android.provider.Settings; 30import android.util.Log; 31import android.view.LayoutInflater; 32import android.view.View; 33import android.widget.CheckBox; 34 35import com.android.internal.app.AlertActivity; 36import com.android.internal.app.AlertController; 37import com.android.settings.R; 38 39import static android.net.ConnectivityManager.ACTION_PROMPT_LOST_VALIDATION; 40import static android.net.ConnectivityManager.ACTION_PROMPT_UNVALIDATED; 41import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 42 43public final class WifiNoInternetDialog extends AlertActivity implements 44 DialogInterface.OnClickListener { 45 private static final String TAG = "WifiNoInternetDialog"; 46 47 private ConnectivityManager mCM; 48 private Network mNetwork; 49 private String mNetworkName; 50 private ConnectivityManager.NetworkCallback mNetworkCallback; 51 private CheckBox mAlwaysAllow; 52 private String mAction; 53 54 private boolean isKnownAction(Intent intent) { 55 return intent.getAction().equals(ACTION_PROMPT_UNVALIDATED) || 56 intent.getAction().equals(ACTION_PROMPT_LOST_VALIDATION); 57 } 58 59 @Override 60 public void onCreate(Bundle savedInstanceState) { 61 super.onCreate(savedInstanceState); 62 63 final Intent intent = getIntent(); 64 if (intent == null || !isKnownAction(intent) || !"netId".equals(intent.getScheme())) { 65 Log.e(TAG, "Unexpected intent " + intent + ", exiting"); 66 finish(); 67 return; 68 } 69 70 mAction = intent.getAction(); 71 72 try { 73 mNetwork = new Network(Integer.parseInt(intent.getData().getSchemeSpecificPart())); 74 } catch (NullPointerException|NumberFormatException e) { 75 mNetwork = null; 76 } 77 78 if (mNetwork == null) { 79 Log.e(TAG, "Can't determine network from '" + intent.getData() + "' , exiting"); 80 finish(); 81 return; 82 } 83 84 // TODO: add a registerNetworkCallback(Network network, NetworkCallback networkCallback) and 85 // simplify this. 86 final NetworkRequest request = new NetworkRequest.Builder().clearCapabilities().build(); 87 mNetworkCallback = new NetworkCallback() { 88 @Override 89 public void onLost(Network network) { 90 // Close the dialog if the network disconnects. 91 if (mNetwork.equals(network)) { 92 Log.d(TAG, "Network " + mNetwork + " disconnected"); 93 finish(); 94 } 95 } 96 @Override 97 public void onCapabilitiesChanged(Network network, NetworkCapabilities nc) { 98 // Close the dialog if the network validates. 99 if (mNetwork.equals(network) && nc.hasCapability(NET_CAPABILITY_VALIDATED)) { 100 Log.d(TAG, "Network " + mNetwork + " validated"); 101 finish(); 102 } 103 } 104 }; 105 106 mCM = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); 107 mCM.registerNetworkCallback(request, mNetworkCallback); 108 109 final NetworkInfo ni = mCM.getNetworkInfo(mNetwork); 110 if (ni == null || !ni.isConnectedOrConnecting()) { 111 Log.d(TAG, "Network " + mNetwork + " is not connected: " + ni); 112 finish(); 113 return; 114 } 115 mNetworkName = ni.getExtraInfo(); 116 if (mNetworkName != null) { 117 mNetworkName = mNetworkName.replaceAll("^\"|\"$", ""); // Remove double quotes 118 } 119 120 createDialog(); 121 } 122 123 private void createDialog() { 124 mAlert.setIcon(R.drawable.ic_settings_wireless); 125 126 final AlertController.AlertParams ap = mAlertParams; 127 if (ACTION_PROMPT_UNVALIDATED.equals(mAction)) { 128 ap.mTitle = mNetworkName; 129 ap.mMessage = getString(R.string.no_internet_access_text); 130 ap.mPositiveButtonText = getString(R.string.yes); 131 ap.mNegativeButtonText = getString(R.string.no); 132 } else { 133 ap.mTitle = getString(R.string.lost_internet_access_title); 134 ap.mMessage = getString(R.string.lost_internet_access_text); 135 ap.mPositiveButtonText = getString(R.string.lost_internet_access_switch); 136 ap.mNegativeButtonText = getString(R.string.lost_internet_access_cancel); 137 } 138 ap.mPositiveButtonListener = this; 139 ap.mNegativeButtonListener = this; 140 141 final LayoutInflater inflater = LayoutInflater.from(ap.mContext); 142 final View checkbox = inflater.inflate( 143 com.android.internal.R.layout.always_use_checkbox, null); 144 ap.mView = checkbox; 145 mAlwaysAllow = (CheckBox) checkbox.findViewById(com.android.internal.R.id.alwaysUse); 146 147 if (ACTION_PROMPT_UNVALIDATED.equals(mAction)) { 148 mAlwaysAllow.setText(getString(R.string.no_internet_access_remember)); 149 } else { 150 mAlwaysAllow.setText(getString(R.string.lost_internet_access_persist)); 151 } 152 153 setupAlert(); 154 } 155 156 @Override 157 protected void onDestroy() { 158 if (mNetworkCallback != null) { 159 mCM.unregisterNetworkCallback(mNetworkCallback); 160 mNetworkCallback = null; 161 } 162 super.onDestroy(); 163 } 164 165 public void onClick(DialogInterface dialog, int which) { 166 if (which != BUTTON_NEGATIVE && which != BUTTON_POSITIVE) return; 167 final boolean always = mAlwaysAllow.isChecked(); 168 final String what, action; 169 170 if (ACTION_PROMPT_UNVALIDATED.equals(mAction)) { 171 what = "NO_INTERNET"; 172 final boolean accept = (which == BUTTON_POSITIVE); 173 action = (accept ? "Connect" : "Ignore"); 174 mCM.setAcceptUnvalidated(mNetwork, accept, always); 175 } else { 176 what = "LOST_INTERNET"; 177 final boolean avoid = (which == BUTTON_POSITIVE); 178 action = (avoid ? "Switch away" : "Get stuck"); 179 if (always) { 180 Settings.Global.putString(mAlertParams.mContext.getContentResolver(), 181 Settings.Global.NETWORK_AVOID_BAD_WIFI, avoid ? "1" : "0"); 182 } else if (avoid) { 183 mCM.setAvoidUnvalidated(mNetwork); 184 } 185 } 186 Log.d(TAG, what + ": " + action + " network=" + mNetwork + 187 (always ? " and remember" : "")); 188 } 189} 190