private void FileIdSegmentAssemblerList_PopularityLost(ushort key, FileTransfer.FileSegmentAssembler value)
{
value.Close();
}
private void ExtractSmbData(NetworkTcpSession tcpSession, bool transferIsClientToServer, Packets.TcpPacket tcpPacket, Packets.SmbPacket.AbstractSmbCommand smbCommandPacket, PacketHandler mainPacketHandler)
{
NetworkHost sourceHost, destinationHost;
if (transferIsClientToServer)
{
sourceHost = tcpSession.Flow.FiveTuple.ClientHost;
destinationHost = tcpSession.Flow.FiveTuple.ServerHost;
}
else
{
sourceHost = tcpSession.Flow.FiveTuple.ServerHost;
destinationHost = tcpSession.Flow.FiveTuple.ClientHost;
}
string smbSessionId;
if (smbCommandPacket.ParentCifsPacket.FlagsResponse)
{
smbSessionId = SmbSession.GetSmbSessionId(sourceHost.IPAddress, tcpPacket.SourcePort, destinationHost.IPAddress, tcpPacket.DestinationPort);
}
else
{
smbSessionId = SmbSession.GetSmbSessionId(destinationHost.IPAddress, tcpPacket.DestinationPort, sourceHost.IPAddress, tcpPacket.SourcePort);
}
if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.NegotiateProtocolRequest))
{
Packets.SmbPacket.NegotiateProtocolRequest request = (Packets.SmbPacket.NegotiateProtocolRequest)smbCommandPacket;
sourceHost.AcceptedSmbDialectsList = request.DialectList;
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.NegotiateProtocolResponse))
{
Packets.SmbPacket.NegotiateProtocolResponse reply = (Packets.SmbPacket.NegotiateProtocolResponse)smbCommandPacket;
if (destinationHost.AcceptedSmbDialectsList != null && destinationHost.AcceptedSmbDialectsList.Count > reply.DialectIndex)
{
sourceHost.PreferredSmbDialect = destinationHost.AcceptedSmbDialectsList[reply.DialectIndex];
}
//sourceHost.ExtraDetailsList.Add("Preferred SMB dialect", destinationHost.AcceptedSmbDialectsList[reply.DialectIndex]);
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.TreeConnectAndXRequest))
{
Packets.SmbPacket.TreeConnectAndXRequest request = (Packets.SmbPacket.TreeConnectAndXRequest)smbCommandPacket;
if (request.ShareName != null && request.ShareName.Length > 0)
{
destinationHost.AddNumberedExtraDetail("SMB File Share", request.ShareName);
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
parameters.Add("SMB Tree Connect AndX Request " + request.ParentCifsPacket.MultiplexId.ToString(), request.ShareName);
mainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(smbCommandPacket.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, smbCommandPacket.ParentFrame.Timestamp, "SMB Tree Connect AndX Request"));
SmbSession smbSession;
if (this.smbSessionPopularityList.ContainsKey(smbSessionId))
{
smbSession = this.smbSessionPopularityList[smbSessionId];
}
else
{
smbSession = new SmbSession(destinationHost.IPAddress, tcpPacket.DestinationPort, sourceHost.IPAddress, tcpPacket.SourcePort);
this.smbSessionPopularityList.Add(smbSessionId, smbSession);
}
smbSession.AddTreeConnectAndXRequestPath(smbCommandPacket.ParentCifsPacket.UserId, smbCommandPacket.ParentCifsPacket.MultiplexId, request.ShareName);
}
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.TreeConnectAndXResponse))
{
SmbSession smbSession;
if (this.smbSessionPopularityList.ContainsKey(smbSessionId))
{
smbSession = this.smbSessionPopularityList[smbSessionId];
}
else
{
smbSession = new SmbSession(sourceHost.IPAddress, tcpPacket.SourcePort, destinationHost.IPAddress, tcpPacket.DestinationPort);
this.smbSessionPopularityList.Add(smbSessionId, smbSession);
}
smbSession.StoreTreeConnectAndXRequestPathForTree(smbCommandPacket.ParentCifsPacket.UserId, smbCommandPacket.ParentCifsPacket.MultiplexId, smbCommandPacket.ParentCifsPacket.TreeId);
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.SetupAndXRequest))
{
Packets.SmbPacket.SetupAndXRequest request = (Packets.SmbPacket.SetupAndXRequest)smbCommandPacket;
if (request.NativeLanManager != null && request.NativeLanManager.Length > 0)
{
if (sourceHost.ExtraDetailsList.ContainsKey("SMB Native LAN Manager"))
{
sourceHost.ExtraDetailsList["SMB Native LAN Manager"] = request.NativeLanManager;
}
else
{
sourceHost.ExtraDetailsList.Add("SMB Native LAN Manager", request.NativeLanManager);
}
}
if (request.NativeOs != null && request.NativeOs.Length > 0)
{
if (sourceHost.ExtraDetailsList.ContainsKey("SMB Native OS"))
{
sourceHost.ExtraDetailsList["SMB Native OS"] = request.NativeOs;
}
else
{
sourceHost.ExtraDetailsList.Add("SMB Native OS", request.NativeOs);
}
}
if (request.PrimaryDomain != null && request.PrimaryDomain.Length > 0)
{
sourceHost.AddDomainName(request.PrimaryDomain);
}
if (request.AccountName != null && request.AccountName.Length > 0)
{
NetworkCredential nCredential = new NetworkCredential(sourceHost, destinationHost, smbCommandPacket.PacketTypeDescription, request.AccountName, request.ParentFrame.Timestamp);
if (request.AccountPassword != null && request.AccountPassword.Length > 0)
{
nCredential.Password = request.AccountPassword;
}
mainPacketHandler.AddCredential(nCredential);
}
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.SetupAndXResponse))
{
Packets.SmbPacket.SetupAndXResponse response = (Packets.SmbPacket.SetupAndXResponse)smbCommandPacket;
if (response.NativeLanManager != null && response.NativeLanManager.Length > 0)
{
if (sourceHost.ExtraDetailsList.ContainsKey("SMB Native LAN Manager"))
{
sourceHost.ExtraDetailsList["SMB Native LAN Manager"] = response.NativeLanManager;
}
else
{
sourceHost.ExtraDetailsList.Add("SMB Native LAN Manager", response.NativeLanManager);
}
}
if (response.NativeOs != null && response.NativeOs.Length > 0)
{
if (sourceHost.ExtraDetailsList.ContainsKey("SMB Native OS"))
{
sourceHost.ExtraDetailsList["SMB Native OS"] = response.NativeOs;
}
else
{
sourceHost.ExtraDetailsList.Add("SMB Native OS", response.NativeOs);
}
}
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.NTCreateAndXRequest))
{
Packets.SmbPacket.NTCreateAndXRequest request = (Packets.SmbPacket.NTCreateAndXRequest)smbCommandPacket;
string filename, filePath;
if (request.Filename.EndsWith("\0"))
{
filename = request.Filename.Remove(request.Filename.Length - 1);
}
else
{
filename = request.Filename;
}
//print raw filename on parameters tab
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
parameters.Add("SMB NT Create AndX Request " + request.ParentCifsPacket.MultiplexId.ToString(), filename);
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(request.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, request.ParentFrame.Timestamp, "SMB NTCreateAndXRequest"));
SmbSession smbSession;
if (this.smbSessionPopularityList.ContainsKey(smbSessionId))
{
smbSession = this.smbSessionPopularityList[smbSessionId];
}
else
{
smbSession = new SmbSession(destinationHost.IPAddress, tcpPacket.DestinationPort, sourceHost.IPAddress, tcpPacket.SourcePort);
this.smbSessionPopularityList.Add(smbSessionId, smbSession);
}
string treePath = smbSession.GetPathForTree(smbCommandPacket.ParentCifsPacket.TreeId);
if (treePath == null)
{
filePath = "";
}
else
{
filePath = treePath + System.IO.Path.DirectorySeparatorChar;
}
if (System.IO.Path.DirectorySeparatorChar != '\\' && filename.Contains("\\"))
{
filename.Replace('\\', System.IO.Path.DirectorySeparatorChar);
}
if (filename.Contains(System.IO.Path.DirectorySeparatorChar.ToString()))
{
filePath += filename.Substring(0, filename.LastIndexOf(System.IO.Path.DirectorySeparatorChar.ToString()));
filename = filename.Substring(filename.LastIndexOf(System.IO.Path.DirectorySeparatorChar.ToString()) + 1);
}
else
{
filePath += System.IO.Path.DirectorySeparatorChar.ToString();
}
try {
FileTransfer.FileStreamAssembler assembler = new FileTransfer.FileStreamAssembler(mainPacketHandler.FileStreamAssemblerList, tcpSession.Flow.FiveTuple, !transferIsClientToServer, FileTransfer.FileStreamTypes.SMB, filename, filePath, filePath + filename, smbCommandPacket.ParentFrame.FrameNumber, smbCommandPacket.ParentFrame.Timestamp);
smbSession.AddFileStreamAssembler(assembler, request.ParentCifsPacket.TreeId, request.ParentCifsPacket.MultiplexId, request.ParentCifsPacket.ProcessId);
}
catch (Exception e) {
MainPacketHandler.OnAnomalyDetected("Error creating assembler for SMB file transfer: " + e.Message);
}
}
//else if(!smbCommandPacket.ParentCifsPacket.FlagsResponse && mainPacketHandler.FileStreamAssemblerList.ContainsAssembler(destinationHost, tcpPacket.DestinationPort, sourceHost, tcpPacket.SourcePort, true)) {
else if (!smbCommandPacket.ParentCifsPacket.FlagsResponse && this.smbSessionPopularityList.ContainsKey(smbSessionId))
{
//Request
if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.CloseRequest) && smbSessionPopularityList.ContainsKey(smbSessionId))
{
SmbSession smbSession = this.smbSessionPopularityList[smbSessionId];
Packets.SmbPacket.CloseRequest closeRequest = (Packets.SmbPacket.CloseRequest)smbCommandPacket;
ushort fileId = closeRequest.FileId;
//FileTransfer.FileStreamAssembler assemblerToClose;
if (smbSession.ContainsFileId(closeRequest.ParentCifsPacket.TreeId, closeRequest.ParentCifsPacket.MultiplexId, closeRequest.ParentCifsPacket.ProcessId, fileId))
{
FileTransfer.FileStreamAssembler assemblerToClose = smbSession.GetFileStreamAssembler(closeRequest.ParentCifsPacket.TreeId, closeRequest.ParentCifsPacket.MultiplexId, closeRequest.ParentCifsPacket.ProcessId, fileId);
if (assemblerToClose != null && assemblerToClose.AssembledByteCount >= assemblerToClose.FileContentLength)
{
assemblerToClose.FinishAssembling();
}
FileTransfer.FileSegmentAssembler segmentAssemblerToClose = smbSession.GetFileSegmentAssembler(closeRequest.ParentCifsPacket.TreeId, closeRequest.ParentCifsPacket.MultiplexId, closeRequest.ParentCifsPacket.ProcessId, fileId);
if (segmentAssemblerToClose != null)
{
segmentAssemblerToClose.Close();
}
smbSession.RemoveFileStreamAssembler(closeRequest.ParentCifsPacket.TreeId, closeRequest.ParentCifsPacket.MultiplexId, closeRequest.ParentCifsPacket.ProcessId, fileId, false);
//TODO: remove the following line (added for debugging purpose 2011-04-25)
//assemblerToClose.FinishAssembling();
if (mainPacketHandler.FileStreamAssemblerList.ContainsAssembler(assemblerToClose))
{
mainPacketHandler.FileStreamAssemblerList.Remove(assemblerToClose, true);
}
else
{
assemblerToClose.Clear();
}
}
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.ReadAndXRequest) && smbSessionPopularityList.ContainsKey(smbSessionId))
{
SmbSession smbSession = this.smbSessionPopularityList[smbSessionId];
//Packets.CifsPacket.ReadAndXRequest request=this.smbSessionPopularityList[smbSessionId];
Packets.SmbPacket.ReadAndXRequest readRequest = (Packets.SmbPacket.ReadAndXRequest)smbCommandPacket;
ushort fileId = readRequest.FileId;
smbSession.Touch(readRequest.ParentCifsPacket.TreeId, readRequest.ParentCifsPacket.MultiplexId, readRequest.ParentCifsPacket.ProcessId, fileId);
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.WriteAndXRequest))
{
SmbSession smbSession = this.smbSessionPopularityList[smbSessionId];
Packets.SmbPacket.WriteAndXRequest request = (Packets.SmbPacket.WriteAndXRequest)smbCommandPacket;
FileTransfer.FileSegmentAssembler segmentAssembler = smbSession.GetFileSegmentAssembler(request.ParentCifsPacket.TreeId, request.ParentCifsPacket.MultiplexId, request.ParentCifsPacket.ProcessId, request.FileId);
if (segmentAssembler == null)
{
string outputDir = System.IO.Path.GetDirectoryName(mainPacketHandler.OutputDirectory);
FileTransfer.FileStreamAssembler tmpAssembler = smbSession.GetFileStreamAssembler(request.ParentCifsPacket.TreeId, request.ParentCifsPacket.MultiplexId, request.ParentCifsPacket.ProcessId, request.FileId);
if (tmpAssembler != null)
{
string filePath = tmpAssembler.FileLocation;
if (filePath.Length == 0 || filePath.EndsWith("/"))
{
filePath += tmpAssembler.Filename;
}
else
{
filePath += "/" + tmpAssembler.Filename;
}
segmentAssembler = new FileTransfer.FileSegmentAssembler(outputDir, tcpSession, false, filePath, tcpSession.ToString() + "SMB" + request.FileId.ToString(), mainPacketHandler.FileStreamAssemblerList, null, FileTransfer.FileStreamTypes.SMB, "SMB Write " + tmpAssembler.Details, null);
smbSession.AddFileSegmentAssembler(segmentAssembler, request.FileId);
}
}
if (segmentAssembler != null)
{
segmentAssembler.AddData(request.WriteOffset, request.GetFileData(), request.ParentFrame);
}
}
}
else if (smbCommandPacket.ParentCifsPacket.FlagsResponse && this.smbSessionPopularityList.ContainsKey(smbSessionId))
{
//Response
SmbSession smbSession = this.smbSessionPopularityList[smbSessionId];
//FileTransfer.FileStreamAssembler assembler=mainPacketHandler.FileStreamAssemblerList.GetAssembler(sourceHost, tcpPacket.SourcePort, destinationHost, tcpPacket.DestinationPort, true);
if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.NTCreateAndXResponse))
{
Packets.SmbPacket.NTCreateAndXResponse response = (Packets.SmbPacket.NTCreateAndXResponse)smbCommandPacket;
ushort fileId = response.FileId;
int fileLength = (int)response.EndOfFile;//yes, I know I will not be able to store big files now... but an int as length is really enough!
//tag the requested file with the fileId
FileTransfer.FileStreamAssembler assembler = smbSession.GetLastReferencedFileStreamAssembler(response.ParentCifsPacket.TreeId, response.ParentCifsPacket.MultiplexId, response.ParentCifsPacket.ProcessId);
smbSession.RemoveLastReferencedAssembler(response.ParentCifsPacket.TreeId, response.ParentCifsPacket.MultiplexId, response.ParentCifsPacket.ProcessId);
if (assembler != null)
{
//Add file ID as extended ID in order to differentiate between parallell file transfers on disk cache
assembler.ExtendedFileId = "Id" + fileId.ToString("X4"); //2011-04-18
smbSession.AddFileStreamAssembler(assembler, response.ParentCifsPacket.TreeId, response.ParentCifsPacket.MultiplexId, response.ParentCifsPacket.ProcessId, response.FileId);
assembler.FileContentLength = fileLength;
}
}
else if (smbCommandPacket.GetType() == typeof(Packets.SmbPacket.ReadAndXResponse))
{
Packets.SmbPacket.ReadAndXResponse response = (Packets.SmbPacket.ReadAndXResponse)smbCommandPacket;
//move the assembler to the real FileStreamAssemblerList!
FileTransfer.FileStreamAssembler assembler = smbSession.GetLastReferencedFileStreamAssembler(response.ParentCifsPacket.TreeId, response.ParentCifsPacket.MultiplexId, response.ParentCifsPacket.ProcessId);
if (assembler == null)
{
base.MainPacketHandler.OnAnomalyDetected("Unable to find assembler for frame " + smbCommandPacket.ParentFrame.FrameNumber + " : " + smbCommandPacket.ToString());
}
else if (assembler != null)
{
/* Removed 2011-04-25
* if(!mainPacketHandler.FileStreamAssemblerList.ContainsAssembler(assembler))
* mainPacketHandler.FileStreamAssemblerList.Add(assembler);
* */
assembler.FileSegmentRemainingBytes += response.DataLength;//setting this one so that it can receive more bytes
if (!assembler.IsActive)
{
System.Diagnostics.Debug.Assert(assembler.ExtendedFileId != null && assembler.ExtendedFileId != "", "No FileID set for SMB file transfer!");
if (!assembler.TryActivate())
{
if (!response.ParentCifsPacket.ParentFrame.QuickParse)
{
response.ParentCifsPacket.ParentFrame.Errors.Add(new Frame.Error(response.ParentCifsPacket.ParentFrame, response.PacketStartIndex, response.PacketEndIndex, "Unable to activate file stream assembler for " + assembler.FileLocation + "/" + assembler.Filename));
}
}
else if (assembler.IsActive)
{
assembler.AddData(response.GetFileData(), tcpPacket.SequenceNumber);
}
}
/* Removed 2011-04-25
* if(!assembler.IsActive) {//see if the file is fully assembled or if something else went wrong...
* smbSession.RemoveLastReferencedAssembler(response.ParentCifsPacket.TreeId, response.ParentCifsPacket.MultiplexId, response.ParentCifsPacket.ProcessId);
* }
* */
}
}
}
}
//public int ExtractData(NetworkTcpSession tcpSession, NetworkHost sourceHost, NetworkHost destinationHost, IEnumerable<AbstractPacket> packetList) {
public int ExtractData(NetworkTcpSession tcpSession, bool transferIsClientToServer, IEnumerable <PacketParser.Packets.AbstractPacket> packetList)
{
NetworkHost sourceHost, destinationHost;
if (transferIsClientToServer)
{
sourceHost = tcpSession.Flow.FiveTuple.ClientHost;
destinationHost = tcpSession.Flow.FiveTuple.ServerHost;
}
else
{
sourceHost = tcpSession.Flow.FiveTuple.ServerHost;
destinationHost = tcpSession.Flow.FiveTuple.ClientHost;
}
foreach (Packets.AbstractPacket p in packetList)
{
if (p is Packets.Smb2Packet.Smb2TreeConnectRequest)
{
Packets.Smb2Packet.Smb2TreeConnectRequest treeConnectRequest = (Packets.Smb2Packet.Smb2TreeConnectRequest)p;
this.requestCache.Add(GetUniqueMessageId(tcpSession, treeConnectRequest.Smb2Packet.MessageID), treeConnectRequest);
destinationHost.AddNumberedExtraDetail("SMB File Share", treeConnectRequest.ShareName);
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
parameters.Add("SMB2 Connect Request " + treeConnectRequest.Smb2Packet.MessageID, treeConnectRequest.ShareName);
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(p.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, p.ParentFrame.Timestamp, "SMB2 Tree Connect Request"));
}
else if (p is Packets.Smb2Packet.Smb2TreeConnectResponse)
{
Packets.Smb2Packet.Smb2TreeConnectResponse treeConnectResponse = (Packets.Smb2Packet.Smb2TreeConnectResponse)p;
string requestId = GetUniqueMessageId(tcpSession, treeConnectResponse.Smb2Packet.MessageID);
if (treeConnectResponse.Smb2Packet.NtStatus == Smb2Packet.NT_STATUS_SUCCESS && this.requestCache.ContainsKey(requestId))
{
Packets.Smb2Packet.Smb2TreeConnectRequest treeConnectRequest = (Packets.Smb2Packet.Smb2TreeConnectRequest) this.requestCache[requestId];
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
parameters.Add("SMB2 Connect " + treeConnectRequest.Smb2Packet.MessageID.ToString() + " Successful (Tree Id: 0x" + treeConnectResponse.Smb2Packet.TreeId.ToString("x8") + ")", treeConnectRequest.ShareName);
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(p.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, p.ParentFrame.Timestamp, "SMB2 Tree Connect Response"));
}
}
else if (p is Packets.Smb2Packet.Smb2CreateRequest)
{
Packets.Smb2Packet.Smb2CreateRequest createRequest = (Packets.Smb2Packet.Smb2CreateRequest)p;
this.requestCache.Add(GetUniqueMessageId(tcpSession, createRequest.Smb2Packet.MessageID), createRequest);
}
else if (p is Packets.Smb2Packet.Smb2CreateResponse)
{
Packets.Smb2Packet.Smb2CreateResponse createResponse = (Packets.Smb2Packet.Smb2CreateResponse)p;
if (createResponse.IsValidCreateResponse)
{
Guid fileId = createResponse.FileID;
//get request
string requestId = GetUniqueMessageId(tcpSession, createResponse.Smb2Packet.MessageID);
if (this.requestCache.ContainsKey(requestId))
{
#if DEBUG
System.Diagnostics.Debug.Assert(this.requestCache[requestId] is Packets.Smb2Packet.Smb2CreateRequest, "Wrong SMB2 request type for Message ID " + requestId + "!");
#endif
Packets.Smb2Packet.Smb2CreateRequest createRequest = (Packets.Smb2Packet.Smb2CreateRequest) this.requestCache[requestId];
string filename = createRequest.FileName;
if (filename != null && filename.Length > 0)
{
string uniqueFileId = GetUniqueGuid(tcpSession, fileId);
this.fileIdFilenameMap.Add(uniqueFileId, filename);
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
//parameters.Add(fileId.ToString(), filename);
parameters.Add(filename, "File ID: " + fileId.ToString());
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(p.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, p.ParentFrame.Timestamp, "SMB2 Create Response"));
}
}
}
}
else if (p is Packets.Smb2Packet.Smb2ReadRequest)
{
Packets.Smb2Packet.Smb2ReadRequest readRequest = (Packets.Smb2Packet.Smb2ReadRequest)p;
this.requestCache.Add(GetUniqueMessageId(tcpSession, readRequest.Smb2Packet.MessageID), readRequest);
}
else if (p is Packets.Smb2Packet.Smb2ReadResponse)
{
Packets.Smb2Packet.Smb2ReadResponse readResponse = (Packets.Smb2Packet.Smb2ReadResponse)p;
//get request
string requestId = GetUniqueMessageId(tcpSession, readResponse.Smb2Packet.MessageID);
if (this.requestCache.ContainsKey(requestId))
{
#if DEBUG
System.Diagnostics.Debug.Assert(this.requestCache[requestId] is Packets.Smb2Packet.Smb2ReadRequest, "Wrong SMB2 request type for Message ID " + requestId + "!");
#endif
Packets.Smb2Packet.Smb2ReadRequest readRequest = (Packets.Smb2Packet.Smb2ReadRequest) this.requestCache[requestId];
Guid fileId = readRequest.FileId;
FileTransfer.FileSegmentAssembler assembler = this.GetOrCreateAssembler(tcpSession, true, fileId, OP_CODE.Read);
if (assembler != null)
{
assembler.AddData(readRequest.FileOffset, readResponse.FileData, p.ParentFrame);
}
}
}
else if (p is Packets.Smb2Packet.Smb2WriteRequest)
{
Packets.Smb2Packet.Smb2WriteRequest writeRequest = (Packets.Smb2Packet.Smb2WriteRequest)p;
Guid fileId = writeRequest.FileID;
long fileOffset = writeRequest.FileOffset;
byte[] fileData = writeRequest.FileData;
//this.requestCache.Add(GetUniqueMessageId(tcpSession, writeRequest.Smb2Packet.MessageID), writeRequest);
//TODO get fileSegmentAssembler and add data
FileTransfer.FileSegmentAssembler assembler = this.GetOrCreateAssembler(tcpSession, false, fileId, OP_CODE.Write);
if (assembler != null)
{
assembler.AddData(fileOffset, fileData, p.ParentFrame);
}
}
else if (p is Packets.Smb2Packet.Smb2SetInfoRequest)
{
Packets.Smb2Packet.Smb2SetInfoRequest setInfoRequest = (Packets.Smb2Packet.Smb2SetInfoRequest)p;
if (setInfoRequest.EndOfFile != null && setInfoRequest.EndOfFile > 0)
{
Guid fileId = setInfoRequest.FileID;
FileTransfer.FileSegmentAssembler assembler = this.GetOrCreateAssembler(tcpSession, true, fileId, OP_CODE.SetInfo);
assembler.FileSize = setInfoRequest.EndOfFile.Value;
}
}
else if (p is Smb2CloseRequest)
{
Smb2CloseRequest closeRequest = (Smb2CloseRequest)p;
//Guid fileId = closeRequest.FileID;
//ulong messageId = closeRequest.Smb2Packet.MessageID;
this.requestCache.Add(GetUniqueMessageId(tcpSession, closeRequest.Smb2Packet.MessageID), closeRequest);
}
else if (p is Smb2CloseResponse)
{
Smb2CloseResponse closeResponse = (Smb2CloseResponse)p;
//get request
string requestId = GetUniqueMessageId(tcpSession, closeResponse.Smb2Packet.MessageID);
if (this.requestCache.ContainsKey(requestId))
{
#if DEBUG
System.Diagnostics.Debug.Assert(this.requestCache[requestId] is Packets.Smb2Packet.Smb2CloseRequest, "Wrong SMB2 request type for Message ID " + requestId + "!");
#endif
Packets.Smb2Packet.Smb2CloseRequest closeRequest = (Packets.Smb2Packet.Smb2CloseRequest) this.requestCache[requestId];
Guid fileId = closeRequest.FileID;
//ulong messageId = closeRequest.Smb2Packet.MessageID;
long fileSize = closeResponse.EndOfFile;
string uniqueFileId = GetUniqueGuid(tcpSession, fileId);
if (this.fileSegmentAssemblerList.ContainsKey(uniqueFileId))
{
FileTransfer.FileSegmentAssembler assmebler = this.fileSegmentAssemblerList[uniqueFileId];
assmebler.FileSize = fileSize;
assmebler.Close();
}
}
}
else if (p is Smb2FindRequest)
{
Smb2FindRequest findRequest = (Smb2FindRequest)p;
this.requestCache.Add(GetUniqueMessageId(tcpSession, findRequest.Smb2Packet.MessageID), findRequest);
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
parameters.Add("SMB2 Search Pattern", findRequest.SearchPattern);
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(p.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, p.ParentFrame.Timestamp, "SMB2 Find Request"));
}
else if (p is Smb2FindResponse)
{
Smb2FindResponse findResponse = (Smb2FindResponse)p;
Smb2FindRequest findRequest = null;
string requestId = GetUniqueMessageId(tcpSession, findResponse.Smb2Packet.MessageID);
if (this.requestCache.ContainsKey(requestId))
{
findRequest = (Smb2FindRequest)this.requestCache[requestId];
}
System.Collections.Specialized.NameValueCollection parameters = new System.Collections.Specialized.NameValueCollection();
foreach (Smb2FileInfo fi in findResponse.FileInfoList)
{
if (fi.Data.Length > 0)
{
if (findRequest != null && findRequest.InfoLevel == (byte)Smb2Packet.Smb2FindRequest.InfoLevelEnum.NAME_INFO)
{
Packets.Smb2Packet.Smb2FileNameInfo nameInfoResponse = new Smb2FileNameInfo(fi.Data, 0, fi.Data.Length, findRequest.InfoLevel);
parameters.Add("Search result for \"" + findRequest.SearchPattern + "\"", nameInfoResponse.Filename);
}
else if (findRequest != null && (findRequest.InfoLevel == (byte)Smb2Packet.Smb2FindRequest.InfoLevelEnum.BOTH_DIRECTORY_INFO || findRequest.InfoLevel == (byte)Smb2Packet.Smb2FindRequest.InfoLevelEnum.ID_BOTH_DIRECTORY_INFO))
{
Packets.Smb2Packet.Smb2FileBothDirectoryInfo nameInfoResponse = new Smb2FileBothDirectoryInfo(fi.Data, 0, fi.Data.Length, findRequest.InfoLevel);
parameters.Add("Search result for \"" + findRequest.SearchPattern + "\"", nameInfoResponse.Filename);
parameters.Add(nameInfoResponse.Filename, "Created: " + nameInfoResponse.Created.ToString());
parameters.Add(nameInfoResponse.Filename, "Modified: " + nameInfoResponse.Modified.ToString());
parameters.Add(nameInfoResponse.Filename, "Accessed: " + nameInfoResponse.Accessed.ToString());
//parameters.Add(nameInfoResponse.Filename, "Modified: " + nameInfoResponse.AttributeChanged.ToString());
}
else
{
//we don't have the findRequest so we don't know what data type the responses are or how to format them
//A likely guess is that we're seeing a response of type NAME_INFO, but this isn't very crucial info,
//so it's better to just ignore this response.
}
}
}
if (parameters.Count > 0)
{
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(p.ParentFrame.FrameNumber, tcpSession.Flow.FiveTuple, transferIsClientToServer, parameters, p.ParentFrame.Timestamp, "SMB2 File Info"));
}
}
}
return(0);//NetBiosSessionServicePacketHandler will return the # parsed bytes anyway.
}