e8efcd82a8
Motivation: We can just use Objects.requireNonNull(...) as a replacement for ObjectUtil.checkNotNull(....) Modifications: - Use Objects.requireNonNull(...) Result: Less code to maintain.
152 lines
3.9 KiB
Java
152 lines
3.9 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.haproxy;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.DefaultByteBufHolder;
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import static java.util.Objects.requireNonNull;
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/**
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* A Type-Length Value (TLV vector) that can be added to the PROXY protocol
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* to include additional information like SSL information.
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*
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* @see HAProxySSLTLV
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*/
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public class HAProxyTLV extends DefaultByteBufHolder {
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private final Type type;
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private final byte typeByteValue;
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/**
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* The registered types a TLV can have regarding the PROXY protocol 1.5 spec
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*/
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public enum Type {
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PP2_TYPE_ALPN,
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PP2_TYPE_AUTHORITY,
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PP2_TYPE_SSL,
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PP2_TYPE_SSL_VERSION,
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PP2_TYPE_SSL_CN,
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PP2_TYPE_NETNS,
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/**
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* A TLV type that is not officially defined in the spec. May be used for nonstandard TLVs
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*/
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OTHER;
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/**
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* Returns the {@link Type} for a specific byte value as defined in the PROXY protocol 1.5 spec
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* <p>
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* If the byte value is not an official one, it will return {@link Type#OTHER}.
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*
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* @param byteValue the byte for a type
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*
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* @return the {@link Type} of a TLV
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*/
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public static Type typeForByteValue(final byte byteValue) {
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switch (byteValue) {
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case 0x01:
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return PP2_TYPE_ALPN;
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case 0x02:
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return PP2_TYPE_AUTHORITY;
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case 0x20:
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return PP2_TYPE_SSL;
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case 0x21:
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return PP2_TYPE_SSL_VERSION;
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case 0x22:
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return PP2_TYPE_SSL_CN;
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case 0x30:
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return PP2_TYPE_NETNS;
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default:
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return OTHER;
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}
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}
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}
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/**
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* Creates a new HAProxyTLV
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*
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* @param type the {@link Type} of the TLV
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* @param typeByteValue the byteValue of the TLV. This is especially important if non-standard TLVs are used
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* @param content the raw content of the TLV
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*/
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HAProxyTLV(final Type type, final byte typeByteValue, final ByteBuf content) {
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super(content);
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requireNonNull(type, "type");
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this.type = type;
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this.typeByteValue = typeByteValue;
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}
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/**
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* Returns the {@link Type} of this TLV
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*/
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public Type type() {
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return type;
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}
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/**
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* Returns the type of the TLV as byte
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*/
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public byte typeByteValue() {
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return typeByteValue;
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}
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@Override
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public HAProxyTLV copy() {
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return replace(content().copy());
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}
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@Override
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public HAProxyTLV duplicate() {
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return replace(content().duplicate());
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}
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@Override
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public HAProxyTLV retainedDuplicate() {
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return replace(content().retainedDuplicate());
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}
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@Override
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public HAProxyTLV replace(ByteBuf content) {
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return new HAProxyTLV(type, typeByteValue, content);
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}
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@Override
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public HAProxyTLV retain() {
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super.retain();
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return this;
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}
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@Override
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public HAProxyTLV retain(int increment) {
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super.retain(increment);
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return this;
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}
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@Override
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public HAProxyTLV touch() {
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super.touch();
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return this;
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}
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@Override
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public HAProxyTLV touch(Object hint) {
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super.touch(hint);
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return this;
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}
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}
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