| /* |
| * Copyright (C) 2018 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.hotspot2; |
| |
| import com.android.server.wifi.WifiConfigStore; |
| 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; |
| |
| /** |
| * Responsible for Passpoint specific configuration store data. There are two types of |
| * configuration data, system wide and user specific. The system wide configurations are stored |
| * in the share store and user specific configurations are store in the user store. |
| * |
| * Below are the current configuration data for each respective store file, the list will |
| * probably grow in the future. |
| * |
| * Share Store (system wide configurations) |
| * - Current provider index - use for assigning provider ID during provider creation, to make |
| * sure each provider will have an unique ID across all users. |
| * |
| * User Store (user specific configurations) |
| * - Provider list - list of Passpoint provider configurations |
| * |
| */ |
| public class PasspointConfigSharedStoreData implements WifiConfigStore.StoreData { |
| private static final String XML_TAG_SECTION_HEADER_PASSPOINT_CONFIG_DATA = |
| "PasspointConfigData"; |
| private static final String XML_TAG_PROVIDER_INDEX = "ProviderIndex"; |
| |
| private final DataSource mDataSource; |
| |
| /** |
| * Interface define the data source for the Passpoint configuration store data. |
| */ |
| public interface DataSource { |
| /** |
| * Retrieve the current provider index. |
| * |
| * @return long |
| */ |
| long getProviderIndex(); |
| |
| /** |
| * Set the current provider index. |
| * |
| * @param providerIndex The provider index used for provider creation |
| */ |
| void setProviderIndex(long providerIndex); |
| } |
| |
| PasspointConfigSharedStoreData(DataSource dataSource) { |
| mDataSource = dataSource; |
| } |
| |
| @Override |
| public void serializeData(XmlSerializer out) |
| throws XmlPullParserException, IOException { |
| serializeShareData(out); |
| } |
| |
| @Override |
| public void deserializeData(XmlPullParser in, int outerTagDepth) |
| throws XmlPullParserException, IOException { |
| // Ignore empty reads. |
| if (in == null) { |
| return; |
| } |
| deserializeShareData(in, outerTagDepth); |
| } |
| |
| /** |
| * Reset share data (system wide Passpoint configurations). |
| */ |
| @Override |
| public void resetData() { |
| mDataSource.setProviderIndex(0); |
| } |
| |
| @Override |
| public boolean hasNewDataToSerialize() { |
| // always persist. |
| return true; |
| } |
| |
| @Override |
| public String getName() { |
| return XML_TAG_SECTION_HEADER_PASSPOINT_CONFIG_DATA; |
| } |
| |
| @Override |
| public @WifiConfigStore.StoreFileId int getStoreFileId() { |
| // Shared general store. |
| return WifiConfigStore.STORE_FILE_SHARED_GENERAL; |
| } |
| |
| /** |
| * Serialize share data (system wide Passpoint configurations) to a XML block. |
| * |
| * @param out The output stream to serialize data to |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private void serializeShareData(XmlSerializer out) throws XmlPullParserException, IOException { |
| XmlUtil.writeNextValue(out, XML_TAG_PROVIDER_INDEX, mDataSource.getProviderIndex()); |
| } |
| |
| /** |
| * Deserialize share data (system wide Passpoint configurations) from the input stream. |
| * |
| * @param in The input stream to read data from |
| * @param outerTagDepth The tag depth of the current XML section |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private void deserializeShareData(XmlPullParser in, int outerTagDepth) |
| throws XmlPullParserException, IOException { |
| 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_PROVIDER_INDEX: |
| mDataSource.setProviderIndex((long) value); |
| break; |
| default: |
| throw new XmlPullParserException("Unknown value under share store data " |
| + valueName[0]); |
| } |
| } |
| } |
| } |
| |
| |