com.hierynomus.mssmb2.messages.SMB2ReadResponse Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of smbj Show documentation

SMB2 protocol library for communication with Windows servers

There is a newer version: 0.13.0

/*
 * Copyright (C)2016 - SMBJ Contributors
 *
 * 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.hierynomus.mssmb2.messages;

import com.hierynomus.mserref.NtStatus;
import com.hierynomus.mssmb2.SMB2Packet;
import com.hierynomus.protocol.commons.buffer.Buffer;
import com.hierynomus.smb.SMBBuffer;

/**
 * [MS-SMB2].pdf 2.2.20 SMB2 READ Response
 */
public class SMB2ReadResponse extends SMB2Packet {

    private int dataLength;
    private byte[] data;

    @Override
    protected void readMessage(SMBBuffer buffer) throws Buffer.BufferException {
        buffer.skip(2); // StructureSize (2 bytes)
        byte dataOffset = buffer.readByte(); // DataOffset (1 byte)
        buffer.skip(1); // Reserved (1 byte)
        dataLength = buffer.readUInt32AsInt(); // DataLength (4 bytes)
        buffer.readUInt32AsInt(); // DataRemaining (4 bytes)
        buffer.skip(4); // Reserved2 (4 bytes)
        buffer.rpos(dataOffset);
        data = buffer.readRawBytes(dataLength); // Buffer (variable)
    }

    /**
     * [MS-SMB2].pdf 3.3.4.4
     * STATUS_BUFFER_OVERFLOW should be treated as a success code.
     * @param status The status to verify
     * @return
     */
    @Override
    protected boolean isSuccess(NtStatus status) {
        return super.isSuccess(status) || status == NtStatus.STATUS_BUFFER_OVERFLOW;
    }

    public int getDataLength() {
        return dataLength;
    }

    public byte[] getData() {
        return data;
    }
}