| /* |
| * Copyright (C) 2019 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.wifi; |
| |
| import android.annotation.Nullable; |
| import android.util.Log; |
| |
| import com.android.server.wifi.util.WifiConfigStoreEncryptionUtil; |
| import com.android.server.wifi.util.XmlUtil; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * This class performs serialization and parsing of XML data block that contain the mapping |
| * from configKey to randomized MAC address |
| * (XML block data inside <MacAddressMappingList> tag). |
| */ |
| public class RandomizedMacStoreData implements WifiConfigStore.StoreData { |
| private static final String TAG = "RandomizedMacStoreData"; |
| private static final String XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP = "MacAddressMap"; |
| private static final String XML_TAG_MAC_MAP = "MacMapEntry"; |
| |
| private Map<String, String> mMacMapping; |
| |
| RandomizedMacStoreData() {} |
| |
| @Override |
| public void serializeData(XmlSerializer out, |
| @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
| throws XmlPullParserException, IOException { |
| if (mMacMapping != null) { |
| XmlUtil.writeNextValue(out, XML_TAG_MAC_MAP, mMacMapping); |
| } |
| } |
| |
| @Override |
| public void deserializeData(XmlPullParser in, int outerTagDepth, |
| @WifiConfigStore.Version int version, |
| @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
| throws XmlPullParserException, IOException { |
| // Ignore empty reads. |
| if (in == null) { |
| return; |
| } |
| while (!XmlUtil.isNextSectionEnd(in, outerTagDepth)) { |
| String[] valueName = new String[1]; |
| Object value = XmlUtil.readCurrentValue(in, valueName); |
| if (valueName[0] == null) { |
| throw new XmlPullParserException("Missing value name"); |
| } |
| switch (valueName[0]) { |
| case XML_TAG_MAC_MAP: |
| mMacMapping = (Map<String, String>) value; |
| break; |
| default: |
| Log.w(TAG, "Ignoring unknown tag under " |
| + XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP |
| + ": " + valueName[0]); |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public void resetData() { |
| mMacMapping = null; |
| } |
| |
| @Override |
| public boolean hasNewDataToSerialize() { |
| // always persist. |
| return true; |
| } |
| |
| @Override |
| public String getName() { |
| return XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP; |
| } |
| |
| @Override |
| public @WifiConfigStore.StoreFileId int getStoreFileId() { |
| // Shared general store. |
| return WifiConfigStore.STORE_FILE_SHARED_GENERAL; |
| } |
| |
| /** |
| * An empty Map will be returned for null MAC address map. |
| * |
| * @return Map of mapping from configKey to the randomized MAC address. |
| */ |
| public Map<String, String> getMacMapping() { |
| if (mMacMapping == null) { |
| return new HashMap<String, String>(); |
| } |
| return mMacMapping; |
| } |
| |
| /** |
| * Sets the data to be stored to file. |
| * @param macMapping |
| */ |
| public void setMacMapping(Map<String, String> macMapping) { |
| mMacMapping = macMapping; |
| } |
| } |
| |