| /* |
| * Copyright (C) 2017 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.settingslib.deviceinfo; |
| |
| import android.content.Context; |
| import android.net.ConnectivityManager; |
| import android.net.LinkProperties; |
| import android.net.wifi.WifiManager; |
| import androidx.annotation.VisibleForTesting; |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.settingslib.R; |
| import com.android.settingslib.core.lifecycle.Lifecycle; |
| |
| import java.net.InetAddress; |
| import java.util.Iterator; |
| |
| /** |
| * Preference controller for IP address |
| */ |
| public abstract class AbstractIpAddressPreferenceController |
| extends AbstractConnectivityPreferenceController { |
| |
| @VisibleForTesting |
| static final String KEY_IP_ADDRESS = "wifi_ip_address"; |
| |
| private static final String[] CONNECTIVITY_INTENTS = { |
| ConnectivityManager.CONNECTIVITY_ACTION, |
| WifiManager.LINK_CONFIGURATION_CHANGED_ACTION, |
| WifiManager.NETWORK_STATE_CHANGED_ACTION, |
| }; |
| |
| private Preference mIpAddress; |
| private final ConnectivityManager mCM; |
| |
| public AbstractIpAddressPreferenceController(Context context, Lifecycle lifecycle) { |
| super(context, lifecycle); |
| mCM = context.getSystemService(ConnectivityManager.class); |
| } |
| |
| @Override |
| public boolean isAvailable() { |
| return true; |
| } |
| |
| @Override |
| public String getPreferenceKey() { |
| return KEY_IP_ADDRESS; |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mIpAddress = screen.findPreference(KEY_IP_ADDRESS); |
| updateConnectivity(); |
| } |
| |
| @Override |
| protected String[] getConnectivityIntents() { |
| return CONNECTIVITY_INTENTS; |
| } |
| |
| @Override |
| protected void updateConnectivity() { |
| String ipAddress = getDefaultIpAddresses(mCM); |
| if (ipAddress != null) { |
| mIpAddress.setSummary(ipAddress); |
| } else { |
| mIpAddress.setSummary(R.string.status_unavailable); |
| } |
| } |
| |
| /** |
| * Returns the default link's IP addresses, if any, taking into account IPv4 and IPv6 style |
| * addresses. |
| * @param cm ConnectivityManager |
| * @return the formatted and newline-separated IP addresses, or null if none. |
| */ |
| private static String getDefaultIpAddresses(ConnectivityManager cm) { |
| LinkProperties prop = cm.getActiveLinkProperties(); |
| return formatIpAddresses(prop); |
| } |
| |
| private static String formatIpAddresses(LinkProperties prop) { |
| if (prop == null) return null; |
| Iterator<InetAddress> iter = prop.getAllAddresses().iterator(); |
| // If there are no entries, return null |
| if (!iter.hasNext()) return null; |
| // Concatenate all available addresses, newline separated |
| StringBuilder addresses = new StringBuilder(); |
| while (iter.hasNext()) { |
| addresses.append(iter.next().getHostAddress()); |
| if (iter.hasNext()) addresses.append("\n"); |
| } |
| return addresses.toString(); |
| } |
| } |