diff options
Diffstat (limited to 'services/core/java/com/android/server/net/NetworkIdentitySet.java')
-rw-r--r-- | services/core/java/com/android/server/net/NetworkIdentitySet.java | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/net/NetworkIdentitySet.java b/services/core/java/com/android/server/net/NetworkIdentitySet.java new file mode 100644 index 0000000..397f9f4 --- /dev/null +++ b/services/core/java/com/android/server/net/NetworkIdentitySet.java @@ -0,0 +1,95 @@ +/* + * 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 com.android.server.net; + +import android.net.NetworkIdentity; + +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.IOException; +import java.util.HashSet; + +/** + * 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; + + public NetworkIdentitySet() { + } + + public NetworkIdentitySet(DataInputStream 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 subType = 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; + } + + add(new NetworkIdentity(type, subType, subscriberId, networkId, false)); + } + } + + public void writeToStream(DataOutputStream out) throws IOException { + out.writeInt(VERSION_ADD_NETWORK_ID); + out.writeInt(size()); + for (NetworkIdentity ident : this) { + out.writeInt(ident.getType()); + out.writeInt(ident.getSubType()); + writeOptionalString(out, ident.getSubscriberId()); + writeOptionalString(out, ident.getNetworkId()); + out.writeBoolean(ident.getRoaming()); + } + } + + private static void writeOptionalString(DataOutputStream out, String value) throws IOException { + if (value != null) { + out.writeByte(1); + out.writeUTF(value); + } else { + out.writeByte(0); + } + } + + private static String readOptionalString(DataInputStream in) throws IOException { + if (in.readByte() != 0) { + return in.readUTF(); + } else { + return null; + } + } +} |