| /* |
| * 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.server.wifi; |
| |
| import android.annotation.Nullable; |
| import android.text.TextUtils; |
| 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.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Store data for network notifiers. |
| * |
| * Below are the current configuration data for each respective store file: |
| * |
| * User Store (user specific configurations) |
| * - Set of blacklisted SSIDs |
| */ |
| public class SsidSetStoreData implements WifiConfigStore.StoreData { |
| private static final String TAG = "SsidSetStoreData"; |
| private static final String XML_TAG_SECTION_HEADER_SUFFIX = "ConfigData"; |
| private static final String XML_TAG_SSID_SET = "SSIDSet"; |
| |
| private final String mTagName; |
| private final DataSource mDataSource; |
| |
| /** |
| * Interface define the data source for the notifier store data. |
| */ |
| public interface DataSource { |
| /** |
| * Retrieve the SSID set from the data source. |
| * |
| * @return Set of SSIDs |
| */ |
| Set<String> getSsids(); |
| |
| /** |
| * Update the SSID set in the data source. |
| * |
| * @param ssidSet The set of SSIDs |
| */ |
| void setSsids(Set<String> ssidSet); |
| } |
| |
| /** |
| * Creates the SSID Set store data. |
| * |
| * @param name Identifier of the SSID set. |
| * @param dataSource The DataSource that implements the update and retrieval of the SSID set. |
| */ |
| SsidSetStoreData(String name, DataSource dataSource) { |
| mTagName = name + XML_TAG_SECTION_HEADER_SUFFIX; |
| mDataSource = dataSource; |
| } |
| |
| @Override |
| public void serializeData(XmlSerializer out, |
| @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
| throws XmlPullParserException, IOException { |
| Set<String> ssidSet = mDataSource.getSsids(); |
| if (ssidSet != null && !ssidSet.isEmpty()) { |
| XmlUtil.writeNextValue(out, XML_TAG_SSID_SET, mDataSource.getSsids()); |
| } |
| } |
| |
| @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 (TextUtils.isEmpty(valueName[0])) { |
| throw new XmlPullParserException("Missing value name"); |
| } |
| switch (valueName[0]) { |
| case XML_TAG_SSID_SET: |
| mDataSource.setSsids((Set<String>) value); |
| break; |
| default: |
| Log.w(TAG, "Ignoring unknown tag under " + mTagName + ": " + valueName[0]); |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public void resetData() { |
| mDataSource.setSsids(new HashSet<>()); |
| } |
| |
| @Override |
| public boolean hasNewDataToSerialize() { |
| // always persist. |
| return true; |
| } |
| |
| @Override |
| public String getName() { |
| return mTagName; |
| } |
| |
| @Override |
| public @WifiConfigStore.StoreFileId int getStoreFileId() { |
| // Shared general store. |
| return WifiConfigStore.STORE_FILE_USER_GENERAL; |
| } |
| } |