* in SMB protocol format, handling endianness and data type conversions.
 *
 * @author mbechler
 */
public class SMBUtil {

    /**
     * Private constructor to prevent instantiation of utility class.
     */
    private SMBUtil() {
    }

    /**
     * Writes a 16-bit integer value to a byte array in little-endian format
     * @param val the value to write

        System.arraycopy(SMBUtil.SMB2_HEADER, 0, buf, start, SMBUtil.SMB2_HEADER.length);
        // Status at +8
        SMBUtil.writeInt4(status, buf, start + 8);
        // Command at +12
        SMBUtil.writeInt2(command, buf, start + 12);
        // Flags at +16: server-to-redirector
        SMBUtil.writeInt4(0x00000001, buf, start + 16);
        // SessionId at +40 (sync header)

        bufferIndex++;
        this.type = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        final int ownerUOffset = SMBUtil.readInt4(buffer, bufferIndex); // offset to owner sid
        bufferIndex += 4;
        final int ownerGOffset = SMBUtil.readInt4(buffer, bufferIndex); // offset to group sid
        bufferIndex += 4;
        SMBUtil.readInt4(buffer, bufferIndex); // offset to sacl

        if (this.largeFile) {
            this.pid = SMBUtil.readInt2(buffer, bufferIndex);
            final int boHigh = SMBUtil.readInt4(buffer, bufferIndex + 4);
            final int boLow = SMBUtil.readInt4(buffer, bufferIndex + 8);

            this.byteOffset = boHigh << 32 | boLow;

            final int lHigh = SMBUtil.readInt4(buffer, bufferIndex + 12);
            final int lLow = SMBUtil.readInt4(buffer, bufferIndex + 16);

        int start = dstIndex;

        // Compression count (2 bytes)
        SMBUtil.writeInt2(this.compressionAlgorithms.length, dst, dstIndex);
        dstIndex += 2;

        // Padding (2 bytes)
        SMBUtil.writeInt2(0, dst, dstIndex);
        dstIndex += 2;

        // Flags (4 bytes)
        SMBUtil.writeInt4(this.flags, dst, dstIndex);
        dstIndex += 4;

        final int start = dstIndex;

        SMBUtil.writeInt2(this.tflags, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.desiredAccess, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.searchAttributes, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.fileAttributes, dst, dstIndex);
        dstIndex += 2;

        this.dataOffset += this.pad;

        SMBUtil.writeInt2(this.fid, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt4(this.offset, dst, dstIndex);
        dstIndex += 4;
        for (int i = 0; i < 4; i++) {
            dst[dstIndex++] = (byte) 0xFF;
        }
        SMBUtil.writeInt2(this.writeMode, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.remaining, dst, dstIndex);

        final int start = bufferIndex;
        this.alloc = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        this.free = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        this.sectPerAlloc = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        this.bytesPerSect = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        SMBUtil.writeInt4(this.totalParameterCount, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.totalDataCount, dst, dstIndex);
        dstIndex += 4;
        if (this.getCommand() != SMB_COM_NT_TRANSACT_SECONDARY) {
            SMBUtil.writeInt4(this.maxParameterCount, dst, dstIndex);
            dstIndex += 4;
            SMBUtil.writeInt4(this.maxDataCount, dst, dstIndex);

        idx += 2;
        response.status = SMBUtil.readInt4(data, idx);
        idx += 4;
        response.maxReadWriteSize = SMBUtil.readInt4(data, idx);
        idx += 4;
        response.preferredSendSize = SMBUtil.readInt4(data, idx);
        idx += 4;
        response.maxReceiveSize = SMBUtil.readInt4(data, idx);
        idx += 4;
        response.maxFragmentedSize = SMBUtil.readInt4(data, idx);