1 files changed, 86 insertions, 0 deletions
diff --git a/services/java/com/android/server/net/NetworkIdentitySet.java b/services/java/com/android/server/net/NetworkIdentitySet.java
new file mode 100644
index 0000000..757d3bc
--- /dev/null
+++ b/services/java/com/android/server/net/NetworkIdentitySet.java
@@ -0,0 +1,86 @@
+/*
+ * 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.net.ProtocolException;
+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;
+
+    public NetworkIdentitySet() {
+    }
+
+    public NetworkIdentitySet(DataInputStream in) throws IOException {
+        final int version = in.readInt();
+        switch (version) {
+            case VERSION_INIT: {
+                final int size = in.readInt();
+                for (int i = 0; i < size; i++) {
+                    final int ignoredVersion = in.readInt();
+                    final int type = in.readInt();
+                    final int subType = in.readInt();
+                    final String subscriberId = readOptionalString(in);
+                    add(new NetworkIdentity(type, subType, subscriberId));
+                }
+                break;
+            }
+            default: {
+                throw new ProtocolException("unexpected version: " + version);
+            }
+        }
+    }
+
+    public void writeToStream(DataOutputStream out) throws IOException {
+        out.writeInt(VERSION_INIT);
+        out.writeInt(size());
+        for (NetworkIdentity ident : this) {
+            out.writeInt(VERSION_INIT);
+            out.writeInt(ident.getType());
+            out.writeInt(ident.getSubType());
+            writeOptionalString(out, ident.getSubscriberId());
+        }
+    }
+
+    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;
+        }
+    }
+}