/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.wifi;
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import com.android.server.wifi.util.XmlUtil;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import org.xmlpull.v1.XmlSerializer;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* This class performs serialization and parsing of XML data block that contain the mapping
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* from configKey to randomized MAC address
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* (XML block data inside <MacAddressMappingList> tag).
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*/
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public class RandomizedMacStoreData implements WifiConfigStore.StoreData {
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private static final String XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP = "MacAddressMap";
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private static final String XML_TAG_MAC_MAP = "MacMapEntry";
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private Map<String, String> mMacMapping;
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RandomizedMacStoreData() {}
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@Override
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public void serializeData(XmlSerializer out)
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throws XmlPullParserException, IOException {
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if (mMacMapping != null) {
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XmlUtil.writeNextValue(out, XML_TAG_MAC_MAP, mMacMapping);
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}
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}
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@Override
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public void deserializeData(XmlPullParser in, int outerTagDepth)
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throws XmlPullParserException, IOException {
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// Ignore empty reads.
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if (in == null) {
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return;
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}
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while (!XmlUtil.isNextSectionEnd(in, outerTagDepth)) {
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String[] valueName = new String[1];
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Object value = XmlUtil.readCurrentValue(in, valueName);
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if (valueName[0] == null) {
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throw new XmlPullParserException("Missing value name");
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}
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switch (valueName[0]) {
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case XML_TAG_MAC_MAP:
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mMacMapping = (Map<String, String>) value;
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break;
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default:
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throw new XmlPullParserException("Unknown tag under "
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+ XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP
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+ ": " + valueName[0]);
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}
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}
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}
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@Override
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public void resetData() {
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mMacMapping = null;
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}
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@Override
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public boolean hasNewDataToSerialize() {
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// always persist.
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return true;
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}
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@Override
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public String getName() {
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return XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP;
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}
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@Override
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public @WifiConfigStore.StoreFileId int getStoreFileId() {
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// Shared general store.
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return WifiConfigStore.STORE_FILE_SHARED_GENERAL;
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}
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/**
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* An empty Map will be returned for null MAC address map.
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*
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* @return Map of mapping from configKey to the randomized MAC address.
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*/
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public Map<String, String> getMacMapping() {
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if (mMacMapping == null) {
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return new HashMap<String, String>();
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}
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return mMacMapping;
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}
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/**
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* Sets the data to be stored to file.
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* @param macMapping
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*/
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public void setMacMapping(Map<String, String> macMapping) {
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mMacMapping = macMapping;
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}
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}
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