com.hierynomus.mssmb2.messages.SMB2WriteRequest 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.*;
import com.hierynomus.smb.SMBBuffer;
import com.hierynomus.smbj.io.ByteChunkProvider;
/**
* [MS-SMB2].pdf 2.2.21 SMB2 Write Request
*/
public class SMB2WriteRequest extends SMB2MultiCreditPacket {
private final SMB2FileId fileId;
private final ByteChunkProvider byteProvider;
public SMB2WriteRequest(
SMB2Dialect negotiatedDialect, SMB2FileId fileId, long sessionId, long treeId,
ByteChunkProvider byteProvider, int maxPayloadSize) {
super(49, negotiatedDialect, SMB2MessageCommandCode.SMB2_WRITE, sessionId, treeId, Math.min(maxPayloadSize, byteProvider.bytesLeft()));
this.fileId = fileId;
this.byteProvider = byteProvider;
}
@Override
protected void writeTo(SMBBuffer buffer) {
buffer.putUInt16(structureSize); // StructureSize (2 bytes)
short dataOffset = SMB2PacketHeader.STRUCTURE_SIZE + 48;
buffer.putUInt16(dataOffset); // DataOffSet (2 bytes)
buffer.putUInt32(getPayloadSize()); // Length (4 bytes)
buffer.putUInt64(byteProvider.getOffset()); // Offset (8 bytes)
fileId.write(buffer); // FileId (16 bytes)
buffer.putUInt32(0); // Channel (4 bytes)
buffer.putUInt32(Math.max(0, byteProvider.bytesLeft() - getPayloadSize())); // RemainingBytes (4 bytes)
buffer.putUInt16(0); // WriteChannelInfoOffset (2 bytes)
buffer.putUInt16(0); // WriteChannelInfoLength (2 bytes)
buffer.putUInt32(0); // Flags (4 bytes)
byteProvider.writeChunks(buffer, getCreditsAssigned());
}
}