| /* |
| * Copyright (C) 2014 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.server.ethernet; |
| |
| import android.annotation.Nullable; |
| import android.net.IpConfiguration; |
| import android.os.Environment; |
| import android.util.ArrayMap; |
| |
| import com.android.server.net.IpConfigStore; |
| |
| |
| /** |
| * This class provides an API to store and manage Ethernet network configuration. |
| */ |
| public class EthernetConfigStore { |
| private static final String ipConfigFile = Environment.getDataDirectory() + |
| "/misc/ethernet/ipconfig.txt"; |
| |
| private IpConfigStore mStore = new IpConfigStore(); |
| private ArrayMap<String, IpConfiguration> mIpConfigurations; |
| private IpConfiguration mIpConfigurationForDefaultInterface; |
| private final Object mSync = new Object(); |
| |
| public EthernetConfigStore() { |
| mIpConfigurations = new ArrayMap<>(0); |
| } |
| |
| public void read() { |
| synchronized (mSync) { |
| ArrayMap<String, IpConfiguration> configs = |
| IpConfigStore.readIpConfigurations(ipConfigFile); |
| |
| // This configuration may exist in old file versions when there was only a single active |
| // Ethernet interface. |
| if (configs.containsKey("0")) { |
| mIpConfigurationForDefaultInterface = configs.remove("0"); |
| } |
| |
| mIpConfigurations = configs; |
| } |
| } |
| |
| public void write(String iface, IpConfiguration config) { |
| boolean modified; |
| |
| synchronized (mSync) { |
| if (config == null) { |
| modified = mIpConfigurations.remove(iface) != null; |
| } else { |
| IpConfiguration oldConfig = mIpConfigurations.put(iface, config); |
| modified = !config.equals(oldConfig); |
| } |
| |
| if (modified) { |
| mStore.writeIpConfigurations(ipConfigFile, mIpConfigurations); |
| } |
| } |
| } |
| |
| public ArrayMap<String, IpConfiguration> getIpConfigurations() { |
| synchronized (mSync) { |
| return new ArrayMap<>(mIpConfigurations); |
| } |
| } |
| |
| @Nullable |
| public IpConfiguration getIpConfigurationForDefaultInterface() { |
| synchronized (mSync) { |
| return mIpConfigurationForDefaultInterface == null |
| ? null : new IpConfiguration(mIpConfigurationForDefaultInterface); |
| } |
| } |
| } |