jellyfin/Emby.Common.Implementations/IO/SharpCifs/Netbios/NodeStatusResponse.cs

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// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using SharpCifs.Util.Sharpen;
namespace SharpCifs.Netbios
{
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internal class NodeStatusResponse : NameServicePacket
{
private NbtAddress _queryAddress;
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private int _numberOfNames;
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private byte[] _macAddress;
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private byte[] _stats;
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internal NbtAddress[] AddressArray;
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internal NodeStatusResponse(NbtAddress queryAddress)
{
this._queryAddress = queryAddress;
RecordName = new Name();
_macAddress = new byte[6];
}
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internal override int WriteBodyWireFormat(byte[] dst, int dstIndex)
{
return 0;
}
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internal override int ReadBodyWireFormat(byte[] src, int srcIndex)
{
return ReadResourceRecordWireFormat(src, srcIndex);
}
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internal override int WriteRDataWireFormat(byte[] dst, int dstIndex)
{
return 0;
}
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internal override int ReadRDataWireFormat(byte[] src, int srcIndex)
{
int start = srcIndex;
_numberOfNames = src[srcIndex] & unchecked(0xFF);
int namesLength = _numberOfNames * 18;
int statsLength = RDataLength - namesLength - 1;
_numberOfNames = src[srcIndex++] & unchecked(0xFF);
// gotta read the mac first so we can populate addressArray with it
Array.Copy(src, srcIndex + namesLength, _macAddress, 0, 6);
srcIndex += ReadNodeNameArray(src, srcIndex);
_stats = new byte[statsLength];
Array.Copy(src, srcIndex, _stats, 0, statsLength);
srcIndex += statsLength;
return srcIndex - start;
}
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private int ReadNodeNameArray(byte[] src, int srcIndex)
{
int start = srcIndex;
AddressArray = new NbtAddress[_numberOfNames];
string n;
int hexCode;
string scope = _queryAddress.HostName.Scope;
bool groupName;
int ownerNodeType;
bool isBeingDeleted;
bool isInConflict;
bool isActive;
bool isPermanent;
int j;
bool addrFound = false;
try
{
for (int i = 0; i < _numberOfNames; srcIndex += 18, i++)
{
for (j = srcIndex + 14; src[j] == unchecked(0x20); j--)
{
}
n = Runtime.GetStringForBytes(src, srcIndex, j - srcIndex + 1, Name.OemEncoding
);
hexCode = src[srcIndex + 15] & unchecked(0xFF);
groupName = ((src[srcIndex + 16] & unchecked(0x80)) == unchecked(0x80))
? true
: false;
ownerNodeType = (src[srcIndex + 16] & unchecked(0x60)) >> 5;
isBeingDeleted = ((src[srcIndex + 16] & unchecked(0x10)) == unchecked(0x10))
? true
: false;
isInConflict = ((src[srcIndex + 16] & unchecked(0x08)) == unchecked(0x08))
? true
: false;
isActive = ((src[srcIndex + 16] & unchecked(0x04)) == unchecked(0x04))
? true
: false;
isPermanent = ((src[srcIndex + 16] & unchecked(0x02)) == unchecked(0x02))
? true
: false;
if (!addrFound
&& _queryAddress.HostName.HexCode == hexCode
&& (_queryAddress.HostName == NbtAddress.UnknownName
|| _queryAddress.HostName.name.Equals(n)))
{
if (_queryAddress.HostName == NbtAddress.UnknownName)
{
_queryAddress.HostName = new Name(n, hexCode, scope);
}
_queryAddress.GroupName = groupName;
_queryAddress.NodeType = ownerNodeType;
_queryAddress.isBeingDeleted = isBeingDeleted;
_queryAddress.isInConflict = isInConflict;
_queryAddress.isActive = isActive;
_queryAddress.isPermanent = isPermanent;
_queryAddress.MacAddress = _macAddress;
_queryAddress.IsDataFromNodeStatus = true;
addrFound = true;
AddressArray[i] = _queryAddress;
}
else
{
AddressArray[i] = new NbtAddress(new Name(n, hexCode, scope),
_queryAddress.Address,
groupName,
ownerNodeType,
isBeingDeleted,
isInConflict,
isActive,
isPermanent,
_macAddress);
}
}
}
catch (UnsupportedEncodingException)
{
}
return srcIndex - start;
}
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public override string ToString()
{
return "NodeStatusResponse[" + base.ToString() + "]";
}
}
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}