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/*
* 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 com.android.ike.ikev2.message;
import java.nio.ByteBuffer;
/**
* IkeVendorPayload represents a Vendor ID payload
*
* <p>Vendor ID allows a vendor to experiment with new features. This implementation doesn't have
* support for any specific Vendor IDs.
*
* <p>Critical bit must be ignored when doing decoding.
*
* @see <a href="https://tools.ietf.org/html/rfc7296#page-105">RFC 7296, Internet Key Exchange
* Protocol Version 2 (IKEv2)</a>
*/
public final class IkeVendorPayload extends IkePayload {
public final byte[] vendorId;
/**
* Construct an instance of IkeVendorPayload in the context of {@link IkePayloadFactory}.
*
* @param critical indicates if it is a critical payload.
* @param payloadBody the vendor ID.
*/
IkeVendorPayload(boolean critical, byte[] payloadBody) {
super(PAYLOAD_TYPE_VENDOR, critical);
vendorId = payloadBody;
}
/**
* Throw an Exception when trying to encode this payload.
*
* @throws UnsupportedOperationException for this payload.
*/
@Override
protected void encodeToByteBuffer(@PayloadType int nextPayload, ByteBuffer byteBuffer) {
throw new UnsupportedOperationException(
"It is not supported to encode a " + getTypeString());
}
/**
* Get entire payload length.
*
* @return entire payload length.
*/
@Override
protected int getPayloadLength() {
return GENERIC_HEADER_LENGTH + vendorId.length;
}
/**
* Return the payload type as a String.
*
* @return the payload type as a String.
*/
@Override
public String getTypeString() {
return "Vendor";
}
}
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