| /* |
| * 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.netlink; |
| |
| import static java.nio.ByteOrder.BIG_ENDIAN; |
| |
| import java.net.Inet4Address; |
| import java.net.InetSocketAddress; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| |
| /** |
| * struct inet_diag_req_v2 |
| * |
| * see <linux_src>/include/uapi/linux/inet_diag.h |
| * |
| * struct inet_diag_sockid { |
| * __be16 idiag_sport; |
| * __be16 idiag_dport; |
| * __be32 idiag_src[4]; |
| * __be32 idiag_dst[4]; |
| * __u32 idiag_if; |
| * __u32 idiag_cookie[2]; |
| * #define INET_DIAG_NOCOOKIE (~0U) |
| * }; |
| * |
| * @hide |
| */ |
| public class StructInetDiagSockId { |
| public static final int STRUCT_SIZE = 48; |
| |
| private final InetSocketAddress mLocSocketAddress; |
| private final InetSocketAddress mRemSocketAddress; |
| private final byte[] INET_DIAG_NOCOOKIE = new byte[]{ |
| (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, |
| (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff}; |
| private final byte[] IPV4_PADDING = new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; |
| |
| public StructInetDiagSockId(InetSocketAddress loc, InetSocketAddress rem) { |
| mLocSocketAddress = loc; |
| mRemSocketAddress = rem; |
| } |
| |
| public void pack(ByteBuffer byteBuffer) { |
| byteBuffer.order(BIG_ENDIAN); |
| byteBuffer.putShort((short) mLocSocketAddress.getPort()); |
| byteBuffer.putShort((short) mRemSocketAddress.getPort()); |
| byteBuffer.put(mLocSocketAddress.getAddress().getAddress()); |
| if (mLocSocketAddress.getAddress() instanceof Inet4Address) { |
| byteBuffer.put(IPV4_PADDING); |
| } |
| byteBuffer.put(mRemSocketAddress.getAddress().getAddress()); |
| if (mRemSocketAddress.getAddress() instanceof Inet4Address) { |
| byteBuffer.put(IPV4_PADDING); |
| } |
| byteBuffer.order(ByteOrder.nativeOrder()); |
| byteBuffer.putInt(0); |
| byteBuffer.put(INET_DIAG_NOCOOKIE); |
| } |
| |
| @Override |
| public String toString() { |
| return "StructInetDiagSockId{ " |
| + "idiag_sport{" + mLocSocketAddress.getPort() + "}, " |
| + "idiag_dport{" + mRemSocketAddress.getPort() + "}, " |
| + "idiag_src{" + mLocSocketAddress.getAddress().getHostAddress() + "}, " |
| + "idiag_dst{" + mRemSocketAddress.getAddress().getHostAddress() + "}, " |
| + "idiag_if{" + 0 + "} " |
| + "idiag_cookie{INET_DIAG_NOCOOKIE}" |
| + "}"; |
| } |
| } |