Merge changes I09167532,I7df77a99,I67797b3f,Ic27e706f (18e166a1) · Commits · e / os / android_frameworks_base

core/java/android/net/ipmemorystore/NetworkAttributes.java

+49 −0

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@ import java.util.ArrayList;
		import java.util.Collections;
		import java.util.List;
		import java.util.Objects;
		import java.util.StringJoiner;

		/**
		* A POD object to represent attributes of a single L2 network entry.
		@@ -207,4 +208,52 @@ public class NetworkAttributes {
		public int hashCode() {
		return Objects.hash(assignedV4Address, groupHint, dnsAddresses, mtu);
		}

		/** Pretty print */
		@Override
		public String toString() {
		final StringJoiner resultJoiner = new StringJoiner(" ", "{", "}");
		final ArrayList<String> nullFields = new ArrayList<>();

		if (null != assignedV4Address) {
		resultJoiner.add("assignedV4Addr :");
		resultJoiner.add(assignedV4Address.toString());
		} else {
		nullFields.add("assignedV4Addr");
		}

		if (null != groupHint) {
		resultJoiner.add("groupHint :");
		resultJoiner.add(groupHint);
		} else {
		nullFields.add("groupHint");
		}

		if (null != dnsAddresses) {
		resultJoiner.add("dnsAddr : [");
		for (final InetAddress addr : dnsAddresses) {
		resultJoiner.add(addr.getHostAddress());
		}
		resultJoiner.add("]");
		} else {
		nullFields.add("dnsAddr");
		}

		if (null != mtu) {
		resultJoiner.add("mtu :");
		resultJoiner.add(mtu.toString());
		} else {
		nullFields.add("mtu");
		}

		if (!nullFields.isEmpty()) {
		resultJoiner.add("; Null fields : [");
		for (final String field : nullFields) {
		resultJoiner.add(field);
		}
		resultJoiner.add("]");
		}

		return resultJoiner.toString();
		}
		}

core/java/android/net/ipmemorystore/SameL3NetworkResponse.java

+15 −0

Original line number	Diff line number	Diff line
		@@ -128,4 +128,19 @@ public class SameL3NetworkResponse {
		public int hashCode() {
		return Objects.hash(l2Key1, l2Key2, confidence);
		}

		@Override
		/** Pretty print */
		public String toString() {
		switch (getNetworkSameness()) {
		case NETWORK_SAME:
		return "\"" + l2Key1 + "\" same L3 network as \"" + l2Key2 + "\"";
		case NETWORK_DIFFERENT:
		return "\"" + l2Key1 + "\" different L3 network from \"" + l2Key2 + "\"";
		case NETWORK_NEVER_CONNECTED:
		return "\"" + l2Key1 + "\" can't be tested against \"" + l2Key2 + "\"";
		default:
		return "Buggy sameness value ? \"" + l2Key1 + "\", \"" + l2Key2 + "\"";
		}
		}
		}

core/java/android/net/ipmemorystore/Status.java

+12 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,8 @@ import android.annotation.NonNull;
		public class Status {
		public static final int SUCCESS = 0;

		public static final int ERROR_DATABASE_CANNOT_BE_OPENED = -1;

		public final int resultCode;

		public Status(final int resultCode) {
		@@ -47,4 +49,14 @@ public class Status {
		public boolean isSuccess() {
		return SUCCESS == resultCode;
		}

		/** Pretty print */
		@Override
		public String toString() {
		switch (resultCode) {
		case SUCCESS: return "SUCCESS";
		case ERROR_DATABASE_CANNOT_BE_OPENED: return "DATABASE CANNOT BE OPENED";
		default: return "Unknown value ?!";
		}
		}
		}

core/java/android/net/ipmemorystore/Utils.java

0 → 100644

+44 −0

Original line number	Diff line number	Diff line
		/*
		* 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 android.net.ipmemorystore;

		import android.annotation.NonNull;

		/** {@hide} */
		public class Utils {
		/** Pretty print */
		public static String blobToString(final Blob blob) {
		final StringBuilder sb = new StringBuilder("Blob : [");
		if (blob.data.length <= 24) {
		appendByteArray(sb, blob.data, 0, blob.data.length);
		} else {
		appendByteArray(sb, blob.data, 0, 16);
		sb.append("...");
		appendByteArray(sb, blob.data, blob.data.length - 8, blob.data.length);
		}
		sb.append("]");
		return sb.toString();
		}

		// Adds the hex representation of the array between the specified indices (inclusive, exclusive)
		private static void appendByteArray(@NonNull final StringBuilder sb, @NonNull final byte[] ar,
		final int from, final int to) {
		for (int i = from; i < to; ++i) {
		sb.append(String.format("%02X", ar[i]));
		}
		}
		}

services/ipmemorystore/java/com/android/server/net/ipmemorystore/IpMemoryStoreDatabase.java

0 → 100644

+143 −0

Original line number	Diff line number	Diff line
		/*
		* 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.net.ipmemorystore;

		import android.annotation.NonNull;
		import android.content.Context;
		import android.database.sqlite.SQLiteDatabase;
		import android.database.sqlite.SQLiteOpenHelper;

		/**
		* Encapsulating class for using the SQLite database backing the memory store.
		*
		* This class groups together the contracts and the SQLite helper used to
		* use the database.
		*
		* @hide
		*/
		public class IpMemoryStoreDatabase {
		/**
		* Contract class for the Network Attributes table.
		*/
		public static class NetworkAttributesContract {
		public static final String TABLENAME = "NetworkAttributes";

		public static final String COLNAME_L2KEY = "l2Key";
		public static final String COLTYPE_L2KEY = "TEXT NOT NULL";

		public static final String COLNAME_EXPIRYDATE = "expiryDate";
		// Milliseconds since the Epoch, in true Java style
		public static final String COLTYPE_EXPIRYDATE = "BIGINT";

		public static final String COLNAME_ASSIGNEDV4ADDRESS = "assignedV4Address";
		public static final String COLTYPE_ASSIGNEDV4ADDRESS = "INTEGER";

		// Please note that the group hint is only a hint, hence its name. The client can offer
		// this information to nudge the grouping in the decision it thinks is right, but it can't
		// decide for the memory store what is the same L3 network.
		public static final String COLNAME_GROUPHINT = "groupHint";
		public static final String COLTYPE_GROUPHINT = "TEXT";

		public static final String COLNAME_DNSADDRESSES = "dnsAddresses";
		// Stored in marshalled form as is
		public static final String COLTYPE_DNSADDRESSES = "BLOB";

		public static final String COLNAME_MTU = "mtu";
		public static final String COLTYPE_MTU = "INTEGER";

		public static final String CREATE_TABLE = "CREATE TABLE IF NOT EXISTS "
		+ TABLENAME + " ("
		+ COLNAME_L2KEY + " " + COLTYPE_L2KEY + " PRIMARY KEY NOT NULL, "
		+ COLNAME_EXPIRYDATE + " " + COLTYPE_EXPIRYDATE + ", "
		+ COLNAME_ASSIGNEDV4ADDRESS + " " + COLTYPE_ASSIGNEDV4ADDRESS + ", "
		+ COLNAME_GROUPHINT + " " + COLTYPE_GROUPHINT + ", "
		+ COLNAME_DNSADDRESSES + " " + COLTYPE_DNSADDRESSES + ", "
		+ COLNAME_MTU + " " + COLTYPE_MTU + ")";
		public static final String DROP_TABLE = "DROP TABLE IF EXISTS " + TABLENAME;
		}

		/**
		* Contract class for the Private Data table.
		*/
		public static class PrivateDataContract {
		public static final String TABLENAME = "PrivateData";

		public static final String COLNAME_L2KEY = "l2Key";
		public static final String COLTYPE_L2KEY = "TEXT NOT NULL";

		public static final String COLNAME_CLIENT = "client";
		public static final String COLTYPE_CLIENT = "TEXT NOT NULL";

		public static final String COLNAME_DATANAME = "dataName";
		public static final String COLTYPE_DATANAME = "TEXT NOT NULL";

		public static final String COLNAME_DATA = "data";
		public static final String COLTYPE_DATA = "BLOB NOT NULL";

		public static final String CREATE_TABLE = "CREATE TABLE IF NOT EXISTS "
		+ TABLENAME + " ("
		+ COLNAME_L2KEY + " " + COLTYPE_L2KEY + ", "
		+ COLNAME_CLIENT + " " + COLTYPE_CLIENT + ", "
		+ COLNAME_DATANAME + " " + COLTYPE_DATANAME + ", "
		+ COLNAME_DATA + " " + COLTYPE_DATA + ", "
		+ "PRIMARY KEY ("
		+ COLNAME_L2KEY + ", "
		+ COLNAME_CLIENT + ", "
		+ COLNAME_DATANAME + "))";
		public static final String DROP_TABLE = "DROP TABLE IF EXISTS " + TABLENAME;
		}

		// To save memory when the DB is not used, close it after 30s of inactivity. This is
		// determined manually based on what feels right.
		private static final long IDLE_CONNECTION_TIMEOUT_MS = 30_000;

		/** The SQLite DB helper */
		public static class DbHelper extends SQLiteOpenHelper {
		// Update this whenever changing the schema.
		private static final int SCHEMA_VERSION = 1;
		private static final String DATABASE_FILENAME = "IpMemoryStore.db";

		public DbHelper(@NonNull final Context context) {
		super(context, DATABASE_FILENAME, null, SCHEMA_VERSION);
		setIdleConnectionTimeout(IDLE_CONNECTION_TIMEOUT_MS);
		}

		/** Called when the database is created */
		public void onCreate(@NonNull final SQLiteDatabase db) {
		db.execSQL(NetworkAttributesContract.CREATE_TABLE);
		db.execSQL(PrivateDataContract.CREATE_TABLE);
		}

		/** Called when the database is upgraded */
		public void onUpgrade(@NonNull final SQLiteDatabase db, final int oldVersion,
		final int newVersion) {
		// No upgrade supported yet.
		db.execSQL(NetworkAttributesContract.DROP_TABLE);
		db.execSQL(PrivateDataContract.DROP_TABLE);
		onCreate(db);
		}

		/** Called when the database is downgraded */
		public void onDowngrade(@NonNull final SQLiteDatabase db, final int oldVersion,
		final int newVersion) {
		// Downgrades always nuke all data and recreate an empty table.
		db.execSQL(NetworkAttributesContract.DROP_TABLE);
		db.execSQL(PrivateDataContract.DROP_TABLE);
		onCreate(db);
		}
		}
		}