com.hierynomus.mssmb2.messages.SMB2ReadRequest Maven / Gradle / Ivy
/*
* 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.mssmb2.SMB2Dialect;
import com.hierynomus.mssmb2.SMB2FileId;
import com.hierynomus.mssmb2.SMB2MessageCommandCode;
import com.hierynomus.mssmb2.SMB2MultiCreditPacket;
import com.hierynomus.smb.SMBBuffer;
/**
* [MS-SMB2].pdf 2.2.19 SMB2 READ Request
*/
public class SMB2ReadRequest extends SMB2MultiCreditPacket {
private final long offset;
private final SMB2FileId fileId;
public SMB2ReadRequest(
SMB2Dialect dialect, SMB2FileId fileId,
long sessionId, long treeId, long offset, int maxPayloadSize) {
super(49, dialect, SMB2MessageCommandCode.SMB2_READ, sessionId, treeId, maxPayloadSize);
this.fileId = fileId;
this.offset = offset;
}
@Override
protected void writeTo(SMBBuffer buffer) {
buffer.putUInt16(structureSize); // StructureSize (2 bytes)
buffer.putByte((byte) 0); // Padding (1 byte)
buffer.putByte((byte) 0); // Flags (1 byte)
// fix read extra bytes and conflict with exclusive lock, use getPayloadSize() to handle multi credit issue
buffer.putUInt32(getPayloadSize()); // Length (4 bytes)
buffer.putUInt64(offset); // Offset (8 bytes)
fileId.write(buffer); // FileId (16 bytes)
buffer.putUInt32(1); // MinimumCount (4 bytes)
buffer.putUInt32(0); // Channel (4 bytes)
buffer.putUInt32(0); // RemainingBytes (4 bytes)
buffer.putUInt16(0); // ReadChannelInfoOffset (2 bytes)
buffer.putUInt16(0); // ReadChannelInfoLength (2 bytes)
buffer.putByte((byte) 0); // Buffer (variable)
}
}