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/*
* Copyright (C) 2019 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 android.annotation.Nullable;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
/**
* struct inet_diag_req_v2
*
* see <linux_src>/include/uapi/linux/inet_diag.h
*
* struct inet_diag_req_v2 {
* __u8 sdiag_family;
* __u8 sdiag_protocol;
* __u8 idiag_ext;
* __u8 pad;
* __u32 idiag_states;
* struct inet_diag_sockid id;
* };
*
* @hide
*/
public class StructInetDiagReqV2 {
public static final int STRUCT_SIZE = 8 + StructInetDiagSockId.STRUCT_SIZE;
private final byte mSdiagFamily;
private final byte mSdiagProtocol;
private final byte mIdiagExt;
private final byte mPad;
private final StructInetDiagSockId mId;
private final int mState;
public static final int INET_DIAG_REQ_V2_ALL_STATES = (int) 0xffffffff;
public StructInetDiagReqV2(int protocol, InetSocketAddress local, InetSocketAddress remote,
int family) {
this(protocol, local, remote, family, 0 /* pad */, 0 /* extension */,
INET_DIAG_REQ_V2_ALL_STATES);
}
public StructInetDiagReqV2(int protocol, @Nullable InetSocketAddress local,
@Nullable InetSocketAddress remote, int family, int pad, int extension, int state)
throws NullPointerException {
mSdiagFamily = (byte) family;
mSdiagProtocol = (byte) protocol;
// Request for all sockets if no specific socket is requested. Specify the local and remote
// socket address information for target request socket.
if ((local == null) != (remote == null)) {
throw new NullPointerException("Local and remote must be both null or both non-null");
}
mId = ((local != null && remote != null) ? new StructInetDiagSockId(local, remote) : null);
mPad = (byte) pad;
mIdiagExt = (byte) extension;
mState = state;
}
public void pack(ByteBuffer byteBuffer) {
// The ByteOrder must have already been set by the caller.
byteBuffer.put((byte) mSdiagFamily);
byteBuffer.put((byte) mSdiagProtocol);
byteBuffer.put((byte) mIdiagExt);
byteBuffer.put((byte) mPad);
byteBuffer.putInt(mState);
if (mId != null) mId.pack(byteBuffer);
}
@Override
public String toString() {
final String familyStr = NetlinkConstants.stringForAddressFamily(mSdiagFamily);
final String protocolStr = NetlinkConstants.stringForAddressFamily(mSdiagProtocol);
return "StructInetDiagReqV2{ "
+ "sdiag_family{" + familyStr + "}, "
+ "sdiag_protocol{" + protocolStr + "}, "
+ "idiag_ext{" + mIdiagExt + ")}, "
+ "pad{" + mPad + "}, "
+ "idiag_states{" + Integer.toHexString(mState) + "}, "
+ ((mId != null) ? mId.toString() : "inet_diag_sockid=null")
+ "}";
}
}
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