| /* |
| * Copyright (C) 2011 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; |
| |
| import static android.net.ConnectivityManager.TYPE_MOBILE; |
| import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID; |
| |
| import android.annotation.NonNull; |
| import android.service.NetworkIdentitySetProto; |
| import android.util.proto.ProtoOutputStream; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| /** |
| * Identity of a {@code iface}, defined by the set of {@link NetworkIdentity} |
| * active on that interface. |
| * |
| * @hide |
| */ |
| public class NetworkIdentitySet extends HashSet<NetworkIdentity> { |
| private static final int VERSION_INIT = 1; |
| private static final int VERSION_ADD_ROAMING = 2; |
| private static final int VERSION_ADD_NETWORK_ID = 3; |
| private static final int VERSION_ADD_METERED = 4; |
| private static final int VERSION_ADD_DEFAULT_NETWORK = 5; |
| private static final int VERSION_ADD_OEM_MANAGED_NETWORK = 6; |
| private static final int VERSION_ADD_SUB_ID = 7; |
| |
| /** |
| * Construct a {@link NetworkIdentitySet} object. |
| */ |
| public NetworkIdentitySet() { |
| super(); |
| } |
| |
| /** @hide */ |
| public NetworkIdentitySet(@NonNull Set<NetworkIdentity> ident) { |
| super(ident); |
| } |
| |
| /** @hide */ |
| public NetworkIdentitySet(DataInput in) throws IOException { |
| final int version = in.readInt(); |
| final int size = in.readInt(); |
| for (int i = 0; i < size; i++) { |
| if (version <= VERSION_INIT) { |
| final int ignored = in.readInt(); |
| } |
| final int type = in.readInt(); |
| final int ratType = in.readInt(); |
| final String subscriberId = readOptionalString(in); |
| final String networkId; |
| if (version >= VERSION_ADD_NETWORK_ID) { |
| networkId = readOptionalString(in); |
| } else { |
| networkId = null; |
| } |
| final boolean roaming; |
| if (version >= VERSION_ADD_ROAMING) { |
| roaming = in.readBoolean(); |
| } else { |
| roaming = false; |
| } |
| |
| final boolean metered; |
| if (version >= VERSION_ADD_METERED) { |
| metered = in.readBoolean(); |
| } else { |
| // If this is the old data and the type is mobile, treat it as metered. (Note that |
| // if this is a mobile network, TYPE_MOBILE is the only possible type that could be |
| // used.) |
| metered = (type == TYPE_MOBILE); |
| } |
| |
| final boolean defaultNetwork; |
| if (version >= VERSION_ADD_DEFAULT_NETWORK) { |
| defaultNetwork = in.readBoolean(); |
| } else { |
| defaultNetwork = true; |
| } |
| |
| final int oemNetCapabilities; |
| if (version >= VERSION_ADD_OEM_MANAGED_NETWORK) { |
| oemNetCapabilities = in.readInt(); |
| } else { |
| oemNetCapabilities = NetworkIdentity.OEM_NONE; |
| } |
| |
| final int subId; |
| if (version >= VERSION_ADD_SUB_ID) { |
| subId = in.readInt(); |
| } else { |
| subId = INVALID_SUBSCRIPTION_ID; |
| } |
| |
| add(new NetworkIdentity(type, ratType, subscriberId, networkId, roaming, metered, |
| defaultNetwork, oemNetCapabilities, subId)); |
| } |
| } |
| |
| /** |
| * Method to serialize this object into a {@code DataOutput}. |
| * @hide |
| */ |
| public void writeToStream(DataOutput out) throws IOException { |
| out.writeInt(VERSION_ADD_SUB_ID); |
| out.writeInt(size()); |
| for (NetworkIdentity ident : this) { |
| out.writeInt(ident.getType()); |
| out.writeInt(ident.getRatType()); |
| writeOptionalString(out, ident.getSubscriberId()); |
| writeOptionalString(out, ident.getWifiNetworkKey()); |
| out.writeBoolean(ident.isRoaming()); |
| out.writeBoolean(ident.isMetered()); |
| out.writeBoolean(ident.isDefaultNetwork()); |
| out.writeInt(ident.getOemManaged()); |
| out.writeInt(ident.getSubId()); |
| } |
| } |
| |
| /** |
| * @return whether any {@link NetworkIdentity} in this set is considered metered. |
| * @hide |
| */ |
| public boolean isAnyMemberMetered() { |
| if (isEmpty()) { |
| return false; |
| } |
| for (NetworkIdentity ident : this) { |
| if (ident.isMetered()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * @return whether any {@link NetworkIdentity} in this set is considered roaming. |
| * @hide |
| */ |
| public boolean isAnyMemberRoaming() { |
| if (isEmpty()) { |
| return false; |
| } |
| for (NetworkIdentity ident : this) { |
| if (ident.isRoaming()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * @return whether any {@link NetworkIdentity} in this set is considered on the default |
| * network. |
| * @hide |
| */ |
| public boolean areAllMembersOnDefaultNetwork() { |
| if (isEmpty()) { |
| return true; |
| } |
| for (NetworkIdentity ident : this) { |
| if (!ident.isDefaultNetwork()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private static void writeOptionalString(DataOutput out, String value) throws IOException { |
| if (value != null) { |
| out.writeByte(1); |
| out.writeUTF(value); |
| } else { |
| out.writeByte(0); |
| } |
| } |
| |
| private static String readOptionalString(DataInput in) throws IOException { |
| if (in.readByte() != 0) { |
| return in.readUTF(); |
| } else { |
| return null; |
| } |
| } |
| |
| public static int compare(@NonNull NetworkIdentitySet left, @NonNull NetworkIdentitySet right) { |
| Objects.requireNonNull(left); |
| Objects.requireNonNull(right); |
| if (left.isEmpty() && right.isEmpty()) return 0; |
| if (left.isEmpty()) return -1; |
| if (right.isEmpty()) return 1; |
| |
| final NetworkIdentity leftIdent = left.iterator().next(); |
| final NetworkIdentity rightIdent = right.iterator().next(); |
| return NetworkIdentity.compare(leftIdent, rightIdent); |
| } |
| |
| /** |
| * Method to dump this object into proto debug file. |
| * @hide |
| */ |
| public void dumpDebug(ProtoOutputStream proto, long tag) { |
| final long start = proto.start(tag); |
| |
| for (NetworkIdentity ident : this) { |
| ident.dumpDebug(proto, NetworkIdentitySetProto.IDENTITIES); |
| } |
| |
| proto.end(start); |
| } |
| } |