| /* |
| * 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 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; |
| import java.util.Set; |
| |
| /** |
| * This class performs serialization and parsing of XML data block that contain the list of |
| * deleted ephemeral SSIDs (XML block data inside <DeletedEphemeralSSIDList> tag). |
| */ |
| public class DeletedEphemeralSsidsStoreData implements WifiConfigStore.StoreData { |
| private static final String XML_TAG_SECTION_HEADER_DELETED_EPHEMERAL_SSID_LIST = |
| "DeletedEphemeralSSIDList"; |
| private static final String XML_TAG_SSID_LIST = "SSIDList"; |
| |
| private final Clock mClock; |
| private Map<String, Long> mSsidToTimeMap; |
| |
| DeletedEphemeralSsidsStoreData(Clock clock) { |
| mClock = clock; |
| } |
| |
| @Override |
| public void serializeData(XmlSerializer out) |
| throws XmlPullParserException, IOException { |
| if (mSsidToTimeMap != null) { |
| XmlUtil.writeNextValue(out, XML_TAG_SSID_LIST, mSsidToTimeMap); |
| } |
| } |
| |
| @Override |
| public void deserializeData(XmlPullParser in, int outerTagDepth) |
| 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_SSID_LIST: |
| // Backwards compatibility, this used to be a set. |
| if (value instanceof Set) { |
| mSsidToTimeMap = new HashMap<>(); |
| for (String ssid : (Set<String>) value) { |
| // Mark the deleted time as bootup time for existing entries from |
| // previous releases. |
| mSsidToTimeMap.put(ssid, mClock.getWallClockMillis()); |
| } |
| } else if (value instanceof Map) { |
| mSsidToTimeMap = (Map<String, Long>) value; |
| } |
| break; |
| default: |
| throw new XmlPullParserException("Unknown tag under " |
| + XML_TAG_SECTION_HEADER_DELETED_EPHEMERAL_SSID_LIST |
| + ": " + valueName[0]); |
| } |
| } |
| } |
| |
| @Override |
| public void resetData() { |
| mSsidToTimeMap = null; |
| } |
| |
| @Override |
| public boolean hasNewDataToSerialize() { |
| // always persist. |
| return true; |
| } |
| |
| @Override |
| public String getName() { |
| return XML_TAG_SECTION_HEADER_DELETED_EPHEMERAL_SSID_LIST; |
| } |
| |
| @Override |
| public @WifiConfigStore.StoreFileId int getStoreFileId() { |
| // Shared general store. |
| return WifiConfigStore.STORE_FILE_USER_GENERAL; |
| } |
| |
| /** |
| * An empty map will be returned for null SSID list. |
| * |
| * @return Map of SSIDs |
| */ |
| public Map<String, Long> getSsidToTimeMap() { |
| if (mSsidToTimeMap == null) { |
| return new HashMap<String, Long>(); |
| } |
| return mSsidToTimeMap; |
| } |
| |
| public void setSsidToTimeMap(Map<String, Long> ssidMap) { |
| mSsidToTimeMap = ssidMap; |
| } |
| } |
| |