| /* |
| * 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 com.android.internal.net.ipsec.ike.exceptions; |
| |
| import static android.net.ipsec.ike.exceptions.IkeProtocolException.ERROR_TYPE_INVALID_MESSAGE_ID; |
| |
| import android.net.ipsec.ike.exceptions.IkeProtocolException; |
| |
| /** |
| * This exception is thrown when the message ID is out of window size. |
| * |
| * <p>Notifications based on this exception contains the four-octet invalid message ID. It MUST only |
| * ever be sent in an INFORMATIONAL request. Sending this notification is OPTIONAL, and |
| * notifications of this type MUST be rate limited. |
| * |
| * @see <a href="https://tools.ietf.org/html/rfc7296#section-2.3">RFC 7296, Internet Key Exchange |
| * Protocol Version 2 (IKEv2)</a> |
| */ |
| public final class InvalidMessageIdException extends IkeProtocolException { |
| private static final int EXPECTED_ERROR_DATA_LEN = 4; |
| |
| /** |
| * Construct a instance of InvalidMessageIdException |
| * |
| * @param messageId the invalid Message ID. |
| */ |
| public InvalidMessageIdException(int messageId) { |
| super( |
| ERROR_TYPE_INVALID_MESSAGE_ID, |
| integerToByteArray(messageId, EXPECTED_ERROR_DATA_LEN)); |
| } |
| |
| /** |
| * Construct a instance of InvalidMessageIdException from a notify payload. |
| * |
| * @param notifyData the notify data included in the payload. |
| */ |
| public InvalidMessageIdException(byte[] notifyData) { |
| super(ERROR_TYPE_INVALID_MESSAGE_ID, notifyData); |
| } |
| |
| /** |
| * Return the invalid message ID included in this exception. |
| * |
| * @return the message ID. |
| */ |
| public int getMessageId() { |
| return byteArrayToInteger(getErrorData()); |
| } |
| |
| @Override |
| protected boolean isValidDataLength(int dataLen) { |
| return EXPECTED_ERROR_DATA_LEN == dataLen; |
| } |
| } |