com.heartbleed.tls.records.HeartbeatResponseMessage.java Source code

Introduction

Here is the source code for com.heartbleed.tls.records.HeartbeatResponseMessage.java

Source

/*
 * Copyright 2014 Google Inc. All rights reserved.
 *
 * 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.heartbleed.tls.records;

import com.google.common.base.Preconditions;

import com.heartbleed.tls.ContentType;

import java.nio.ByteBuffer;

public class HeartbeatResponseMessage extends TlsRecord {

    protected HeartbeatResponseMessage(byte[] recordBytes) {
        super(recordBytes);
        Preconditions.checkState(getContentType() == ContentType.HEARTBEAT);
    }

    public boolean responseContainsByteSequence(byte[] sequence) {
        Preconditions.checkState(recordBytes[5] == 0x02);
        ByteBuffer buffer = ByteBuffer.wrap(recordBytes);
        buffer.position(6);
        short payloadLength = buffer.getShort();

        for (int i = 0; i < payloadLength - sequence.length; i++) {
            int j;
            for (j = 0; j < sequence.length; j++) {
                if (recordBytes[8 + i + j] != sequence[j]) {
                    break;
                }
            }
            if (j == sequence.length) {
                return true;
            }
        }
        return false;
    }
}