| /* |
| * 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.internal.net.ipsec.ike.exceptions; |
| |
| import static android.net.ipsec.ike.exceptions.IkeProtocolException.ERROR_TYPE_INVALID_MAJOR_VERSION; |
| |
| import android.net.ipsec.ike.exceptions.IkeProtocolException; |
| |
| /** |
| * This exception is thrown when major version is higher than 2. |
| * |
| * <p>Include INVALID_MAJOR_VERSION Notify payload in an unencrypted response message containing |
| * version number 2. |
| * |
| * @see <a href="https://tools.ietf.org/html/rfc7296#section-2.5">RFC 7296, Internet Key Exchange |
| * Protocol Version 2 (IKEv2)</a> |
| */ |
| public final class InvalidMajorVersionException extends IkeProtocolException { |
| private static final int EXPECTED_ERROR_DATA_LEN = 1; |
| |
| /** |
| * Construct a instance of InvalidMajorVersionException |
| * |
| * @param version the major version in received packet |
| */ |
| public InvalidMajorVersionException(byte version) { |
| super(ERROR_TYPE_INVALID_MAJOR_VERSION, new byte[] {version}); |
| } |
| |
| /** |
| * Construct a instance of InvalidMajorVersionException from a notify payload. |
| * |
| * @param notifyData the notify data included in the payload. |
| */ |
| public InvalidMajorVersionException(byte[] notifyData) { |
| super(ERROR_TYPE_INVALID_MAJOR_VERSION, notifyData); |
| } |
| |
| /** |
| * Return the major verion included in this exception. |
| * |
| * @return the major verion |
| */ |
| public int getMajorVerion() { |
| return byteArrayToInteger(getErrorData()); |
| } |
| |
| @Override |
| protected boolean isValidDataLength(int dataLen) { |
| return EXPECTED_ERROR_DATA_LEN == dataLen; |
| } |
| } |