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NetBIOS: Minor code refactoring

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This commit is contained in:
Tal Aloni 2020-01-31 09:39:36 +02:00
parent 48c6822454
commit 71e2e4096f
2 changed files with 9 additions and 4 deletions
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6
SMBLibrary/NetBios/NBTConnectionReceiveBuffer.cs
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@ -1,4 +1,4 @@
/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
/* Copyright (C) 2014-2020 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
*
* You can redistribute this program and/or modify it under the terms of
* the GNU Lesser Public License as published by the Free Software Foundation,
@ -43,9 +43,7 @@ namespace SMBLibrary.NetBios
{
if (!m_packetLength.HasValue)
{
byte flags = ByteReader.ReadByte(m_buffer, m_readOffset + 1);
int trailerLength = (flags & 0x01) << 16 | BigEndianConverter.ToUInt16(m_buffer, m_readOffset + 2);
m_packetLength = 4 + trailerLength;
m_packetLength = SessionPacket.GetSessionPacketLength(m_buffer, m_readOffset);
}
return m_bytesInBuffer >= m_packetLength.Value;
}

7
SMBLibrary/NetBios/SessionPackets/SessionPacket.cs
View file

@ -63,6 +63,13 @@ namespace SMBLibrary.NetBios
}
}
public static int GetSessionPacketLength(byte[] buffer, int offset)
{
byte flags = ByteReader.ReadByte(buffer, offset + 1);
int trailerLength = (flags & 0x01) << 16 | BigEndianConverter.ToUInt16(buffer, offset + 2);
return 4 + trailerLength;
}
public static SessionPacket GetSessionPacket(byte[] buffer, int offset)
{
SessionPacketTypeName type = (SessionPacketTypeName)ByteReader.ReadByte(buffer, offset);