1 files changed, 117 insertions, 0 deletions
diff --git a/service/java/com/android/server/wifi/RandomizedMacStoreData.java b/service/java/com/android/server/wifi/RandomizedMacStoreData.java
new file mode 100644
index 000000000..1e4d972ef
--- /dev/null
+++ b/service/java/com/android/server/wifi/RandomizedMacStoreData.java
@@ -0,0 +1,117 @@
+/*
+ * 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 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 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)
+            throws XmlPullParserException, IOException {
+        if (mMacMapping != null) {
+            XmlUtil.writeNextValue(out, XML_TAG_MAC_MAP, mMacMapping);
+        }
+    }
+
+    @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_MAC_MAP:
+                    mMacMapping = (Map<String, String>) value;
+                    break;
+                default:
+                    throw new XmlPullParserException("Unknown tag under "
+                            + XML_TAG_SECTION_HEADER_MAC_ADDRESS_MAP
+                            + ": " + valueName[0]);
+            }
+        }
+    }
+
+    @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;
+    }
+}
+