/// <summary>
///
/// </summary>
/// <param name="httpPacket"></param>
/// <param name="tcpPacket"></param>
/// <param name="sourceHost"></param>
/// <param name="destinationHost"></param>
/// <param name="mainPacketHandler"></param>
/// <returns>True if the data was successfully parsed. False if the data need to be parsed again with more data</returns>
private bool ExtractHttpData(Packets.HttpPacket httpPacket, Packets.TcpPacket tcpPacket, NetworkHost sourceHost, NetworkHost destinationHost, PacketHandler mainPacketHandler)
{
if (httpPacket.MessageTypeIsRequest)
{
//HTTP request
System.Collections.Specialized.NameValueCollection cookieParams = null;
if (httpPacket.UserAgentBanner != null && httpPacket.UserAgentBanner.Length > 0)
{
sourceHost.AddHttpUserAgentBanner(httpPacket.UserAgentBanner);
}
if (httpPacket.RequestedHost != null && httpPacket.RequestedHost.Length > 0)
{
destinationHost.AddHostName(httpPacket.RequestedHost);
}
if (httpPacket.Cookie != null)
{
cookieParams = new System.Collections.Specialized.NameValueCollection();
char[] separators = { ';', ',' };
foreach (string s in httpPacket.Cookie.Split(separators))
{
string cookieFragment = s.Trim();
int splitOffset = cookieFragment.IndexOf('=');
if (splitOffset > 0)
{
cookieParams.Add(cookieFragment.Substring(0, splitOffset), cookieFragment.Substring(splitOffset + 1));
}
else
{
cookieParams.Add(cookieFragment, "");
}
}
NetworkCredential inCookieCredential = NetworkCredential.GetNetworkCredential(cookieParams, sourceHost, destinationHost, "HTTP Cookie parameter", httpPacket.ParentFrame.Timestamp);
if (inCookieCredential != null)
{
mainPacketHandler.AddCredential(inCookieCredential);
}
mainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(tcpPacket.ParentFrame.FrameNumber, sourceHost, destinationHost, "TCP " + tcpPacket.SourcePort, "TCP " + tcpPacket.DestinationPort, cookieParams, httpPacket.ParentFrame.Timestamp, "HTTP Cookie"));
NetworkCredential credential = new NetworkCredential(sourceHost, destinationHost, "HTTP Cookie", httpPacket.Cookie, "N/A", httpPacket.ParentFrame.Timestamp);
mainPacketHandler.AddCredential(credential);
}
if (httpPacket.AuthorizationCredentialsUsername != null)
{
NetworkCredential nc = new NetworkCredential(sourceHost, destinationHost, httpPacket.PacketTypeDescription, httpPacket.AuthorizationCredentialsUsername, httpPacket.AuthorizationCredentialsPassword, httpPacket.ParentFrame.Timestamp);
mainPacketHandler.AddCredential(nc);
//this.AddCredential(nc);
}
if (httpPacket.HeaderFields != null && httpPacket.HeaderFields.Count > 0)
{
SortedList <string, string> ignoredHeaderNames = new SortedList <string, string>();
ignoredHeaderNames.Add("accept", null);
ignoredHeaderNames.Add("connection", null);
ignoredHeaderNames.Add("accept-language", null);
ignoredHeaderNames.Add("accept-encoding", null);
//Build a sortedList of all headers
System.Collections.Specialized.NameValueCollection httpHeaders = new System.Collections.Specialized.NameValueCollection();
//SortedList<string, string> httpHeaders = new SortedList<string, string>();
foreach (string header in httpPacket.HeaderFields)
{
int delimiterIndex = header.IndexOf(':');
if (delimiterIndex > 0 && delimiterIndex < header.Length)
{
string headerName = header.Substring(0, delimiterIndex).Trim();
//if (!httpHeaders.ContainsKey(headerName))
if (!ignoredHeaderNames.ContainsKey(headerName.ToLower()))
{
httpHeaders.Add(headerName, header.Substring(delimiterIndex + 1).Trim());
}
}
}
//mainPacketHandler.OnParametersDetected
base.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(httpPacket.ParentFrame.FrameNumber, sourceHost, destinationHost, "TCP " + tcpPacket.SourcePort, "TCP " + tcpPacket.DestinationPort, httpHeaders, httpPacket.ParentFrame.Timestamp, "HTTP Header"));
foreach (string headerName in httpHeaders.Keys)
{
/**
* http://mobiforge.com/developing/blog/useful-x-headers
* http://nakedsecurity.sophos.com/2012/01/25/smartphone-website-telephone-number/
* http://www.nowsms.com/discus/messages/485/14998.html
* http://coding-talk.com/f46/check-isdn-10962/
**/
if (headerName.StartsWith("X-", StringComparison.InvariantCultureIgnoreCase))
{
sourceHost.AddNumberedExtraDetail("HTTP header: " + headerName, httpHeaders[headerName]);
}
else if (headerName.StartsWith("HTTP_X", StringComparison.InvariantCultureIgnoreCase))
{
sourceHost.AddNumberedExtraDetail("HTTP header: " + headerName, httpHeaders[headerName]);
}
else if (headerName.StartsWith("X_", StringComparison.InvariantCultureIgnoreCase))
{
sourceHost.AddNumberedExtraDetail("HTTP header: " + headerName, httpHeaders[headerName]);
}
else if (headerName.StartsWith("HTTP_MSISDN", StringComparison.InvariantCultureIgnoreCase))
{
sourceHost.AddNumberedExtraDetail("HTTP header: " + headerName, httpHeaders[headerName]);
}
}
}
//file transfer
if ((httpPacket.RequestMethod == Packets.HttpPacket.RequestMethods.GET || httpPacket.RequestMethod == Packets.HttpPacket.RequestMethods.POST) && httpPacket.RequestedFileName != null)
{
System.Collections.Specialized.NameValueCollection queryStringData = httpPacket.GetQuerystringData();
if (queryStringData != null && queryStringData.Count > 0)
{
//parentForm.ShowParameters(tcpPacket.ParentFrame.FrameNumber, sourceHost, destinationHost, "TCP "+tcpPacket.SourcePort, "TCP "+tcpPacket.DestinationPort, queryStringData, tcpPacket.ParentFrame.Timestamp, "HTTP QueryString");
mainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(tcpPacket.ParentFrame.FrameNumber, sourceHost, destinationHost, "TCP " + tcpPacket.SourcePort, "TCP " + tcpPacket.DestinationPort, queryStringData, tcpPacket.ParentFrame.Timestamp, "HTTP QueryString"));
//mainPacketHandler.AddCredential(new NetworkCredential(sourceHost, destinationHost, "HTTP GET QueryString",
NetworkCredential credential = NetworkCredential.GetNetworkCredential(queryStringData, sourceHost, destinationHost, "HTTP GET QueryString", tcpPacket.ParentFrame.Timestamp);
if (credential != null)
{
mainPacketHandler.AddCredential(credential);
}
if (queryStringData.HasKeys())
{
Dictionary <string, string> queryStringDictionary = new Dictionary <string, string>();
foreach (string key in queryStringData.AllKeys)
{
queryStringDictionary.Add(key, queryStringData[key]);
}
if (queryStringDictionary.ContainsKey("utmsr"))
{
sourceHost.AddNumberedExtraDetail("Screen resolution (Google Analytics)", queryStringDictionary["utmsr"]);
}
if (queryStringDictionary.ContainsKey("utmsc"))
{
sourceHost.AddNumberedExtraDetail("Color depth (Google Analytics)", queryStringDictionary["utmsc"]);
}
if (queryStringDictionary.ContainsKey("utmul"))
{
sourceHost.AddNumberedExtraDetail("Browser language (Google Analytics)", queryStringDictionary["utmul"]);
}
if (queryStringDictionary.ContainsKey("utmfl"))
{
sourceHost.AddNumberedExtraDetail("Flash version (Google Analytics)", queryStringDictionary["utmfl"]);
}
if (httpPacket.RequestMethod == Packets.HttpPacket.RequestMethods.POST && queryStringDictionary.ContainsKey("a") && queryStringDictionary["a"].Equals("SendMessage"))
{
if (!httpPacket.ContentIsComplete())//we must have all the content when parsing AOL data
{
return(false);
}
}
}
}
//file transfer stuff
string fileUri = httpPacket.RequestedFileName;
string queryString = null;
if (fileUri.Contains("?"))
{
if (fileUri.IndexOf('?') + 1 < fileUri.Length)
{
queryString = fileUri.Substring(fileUri.IndexOf('?') + 1);
}
fileUri = fileUri.Substring(0, fileUri.IndexOf('?'));
}
if (fileUri.StartsWith("http://"))
{
fileUri = fileUri.Substring(7);
}
if (fileUri.StartsWith("www.") && fileUri.Contains("/"))
{
fileUri = fileUri.Substring(fileUri.IndexOf("/"));
}
//char[] separators={ '/' };
char[] separators = new char[System.IO.Path.GetInvalidPathChars().Length + 1];
Array.Copy(System.IO.Path.GetInvalidPathChars(), separators, System.IO.Path.GetInvalidPathChars().Length);
separators[separators.Length - 1] = '/';
string[] uriParts = fileUri.Split(separators);
string filename;
string fileLocation = "";
if (fileUri.EndsWith("/"))
{
filename = "index.html";
for (int i = 0; i < uriParts.Length; i++)
{
if (uriParts[i].Length > 0 && !uriParts[i].Contains(".."))
{
fileLocation += "/" + uriParts[i];
}
}
}
else
{
filename = uriParts[uriParts.Length - 1];
for (int i = 0; i < uriParts.Length - 1; i++)
{
if (uriParts[i].Length > 0 && !uriParts[i].Contains(".."))
{
fileLocation += "/" + uriParts[i];
}
}
}
//make sure all queryString-depending dynamic webpages are shown individually
if (queryString != null && queryString.Length > 0)
{
filename += "." + queryString.GetHashCode().ToString("X4");
}
//I will have to switch source and destination host here since this is only the request, not the actual file transfer!
try {
//see if there is an old assembler that needs to be removed
if (mainPacketHandler.FileStreamAssemblerList.ContainsAssembler(destinationHost, tcpPacket.DestinationPort, sourceHost, tcpPacket.SourcePort, true))
{
FileTransfer.FileStreamAssembler oldAssembler = mainPacketHandler.FileStreamAssemblerList.GetAssembler(destinationHost, tcpPacket.DestinationPort, sourceHost, tcpPacket.SourcePort, true);
mainPacketHandler.FileStreamAssemblerList.Remove(oldAssembler, true);
}
string fileDetails = httpPacket.RequestedFileName;
if (httpPacket.RequestedHost != null && httpPacket.RequestedHost.Length > 0 && httpPacket.RequestedFileName != null && httpPacket.RequestedFileName.StartsWith("/"))
{
fileDetails = httpPacket.RequestedHost + httpPacket.RequestedFileName;
}
FileTransfer.FileStreamAssembler assembler = new FileTransfer.FileStreamAssembler(mainPacketHandler.FileStreamAssemblerList, destinationHost, tcpPacket.DestinationPort, sourceHost, tcpPacket.SourcePort, tcpPacket != null, FileTransfer.FileStreamTypes.HttpGetNormal, filename, fileLocation, fileDetails, httpPacket.ParentFrame.FrameNumber, httpPacket.ParentFrame.Timestamp);
//FileTransfer.FileStreamAssembler assembler=new FileTransfer.FileStreamAssembler(mainPacketHandler.FileStreamAssemblerList, destinationHost, tcpPacket.DestinationPort, sourceHost, tcpPacket.SourcePort, tcpPacket!=null, FileTransfer.FileStreamTypes.HttpGetNormal, filename, fileLocation, httpPacket.RequestedFileName, httpPacket.ParentFrame.FrameNumber, httpPacket.ParentFrame.Timestamp);
mainPacketHandler.FileStreamAssemblerList.Add(assembler);
}
catch (Exception e) {
mainPacketHandler.OnAnomalyDetected("Error creating assembler for HTTP file transfer: " + e.Message);
}
//Large HTTP POSTs should also be dumped to files
//if(httpPacket.RequestMethod==Packets.HttpPacket.RequestMethods.POST && !httpPacket.ContentIsComplete() && httpPacket.ContentLength>4096 && httpPacket.ContentType.StartsWith("multipart/form-data")) {
if (httpPacket.RequestMethod == Packets.HttpPacket.RequestMethods.POST)
{
//All Multipart MIME HTTP POSTs should be dumped to file
//the fileAssembler extracts the form parameters after assembly
if (httpPacket.ContentType != null && httpPacket.ContentType.StartsWith("multipart/form-data"))
{
FileTransfer.FileStreamAssembler assembler = null;
try {
//see if there is an old assembler that needs to be removed
if (mainPacketHandler.FileStreamAssemblerList.ContainsAssembler(sourceHost, tcpPacket.SourcePort, destinationHost, tcpPacket.DestinationPort, true))
{
FileTransfer.FileStreamAssembler oldAssembler = mainPacketHandler.FileStreamAssemblerList.GetAssembler(sourceHost, tcpPacket.SourcePort, destinationHost, tcpPacket.DestinationPort, true);
mainPacketHandler.FileStreamAssemblerList.Remove(oldAssembler, true);
}
string mimeBoundary;
if (httpPacket.ContentType.ToLower(System.Globalization.CultureInfo.InvariantCulture).StartsWith("multipart/form-data; boundary=") && httpPacket.ContentType.Length > 30)
{
mimeBoundary = httpPacket.ContentType.Substring(30);
}
else
{
mimeBoundary = "";
}
assembler = new FileTransfer.FileStreamAssembler(mainPacketHandler.FileStreamAssemblerList, sourceHost, tcpPacket.SourcePort, destinationHost, tcpPacket.DestinationPort, tcpPacket != null, FileTransfer.FileStreamTypes.HttpPostMimeMultipartFormData, filename + ".form-data.mime", fileLocation, mimeBoundary, httpPacket.ParentFrame.FrameNumber, httpPacket.ParentFrame.Timestamp);
assembler.FileContentLength = httpPacket.ContentLength;
assembler.FileSegmentRemainingBytes = httpPacket.ContentLength;
mainPacketHandler.FileStreamAssemblerList.Add(assembler);
if (assembler.TryActivate())
{
//assembler is now active
if (httpPacket.MessageBody != null && httpPacket.MessageBody.Length > 0)
{
assembler.AddData(httpPacket.MessageBody, tcpPacket.SequenceNumber);
}
}
}
catch (Exception e) {
if (assembler != null)
{
assembler.Clear();
}
mainPacketHandler.OnAnomalyDetected("Error creating assembler for HTTP file transfer: " + e.Message);
}
}
else //form data (not multipart)
{
System.Collections.Generic.List <Mime.MultipartPart> formMultipartData = httpPacket.GetFormData();
if (formMultipartData != null)
{
foreach (Mime.MultipartPart mimeMultipart in formMultipartData)
{
if (mimeMultipart.Attributes["requests"] != null && httpPacket.GetQuerystringData() != null && httpPacket.GetQuerystringData()["a"] == "SendMessage")
{
//To handle AOL webmail
string encodedMessage = mimeMultipart.Attributes["requests"];
if (encodedMessage.StartsWith("[{") && encodedMessage.EndsWith("}]"))
{
encodedMessage = encodedMessage.Substring(2, encodedMessage.Length - 4);
}
int startIndex = -1;
int endIndex = -1;
while (endIndex < encodedMessage.Length - 2)
{
//startIndex = endIndex + 1;
if (endIndex > 0)
{
startIndex = encodedMessage.IndexOf(',', endIndex) + 1;
}
else
{
startIndex = 0;
}
bool escapedString = encodedMessage[startIndex] == '\"';
if (escapedString)
{
startIndex = encodedMessage.IndexOf('\"', startIndex) + 1;
endIndex = encodedMessage.IndexOf('\"', startIndex);
while (encodedMessage[endIndex - 1] == '\\')
{
endIndex = encodedMessage.IndexOf('\"', endIndex + 1);
}
}
else
{
endIndex = encodedMessage.IndexOf(':', startIndex);
}
string attributeName = encodedMessage.Substring(startIndex, endIndex - startIndex);
#if DEBUG
//System.Diagnostics.Debug.Assert(encodedMessage[endIndex + 1] == ':');
if (encodedMessage[endIndex] != ':' && encodedMessage[endIndex + 1] != ':')
{
System.Diagnostics.Debugger.Break();
}
#endif
startIndex = encodedMessage.IndexOf(':', endIndex) + 1;
escapedString = encodedMessage[startIndex] == '\"';
if (escapedString)
{
startIndex = encodedMessage.IndexOf('\"', startIndex) + 1;
endIndex = encodedMessage.IndexOf('\"', startIndex);
while (encodedMessage[endIndex - 1] == '\\')
{
endIndex = encodedMessage.IndexOf('\"', endIndex + 1);
}
}
else if (encodedMessage.IndexOf(',', startIndex) > 0)
{
endIndex = encodedMessage.IndexOf(',', startIndex);
}
else
{
endIndex = encodedMessage.Length;
}
string attributeValue = encodedMessage.Substring(startIndex, endIndex - startIndex);
//replace some special characters
encodedMessage = encodedMessage.Replace("\\n", System.Environment.NewLine).Replace("\\r", "\r").Replace("\\t", "\t");
mimeMultipart.Attributes.Add(attributeName, attributeValue);
}
//END OF AOL WEBMAIL CODE
}
}
this.MainPacketHandler.ExtractMultipartFormData(formMultipartData, sourceHost, destinationHost, tcpPacket.ParentFrame.Timestamp, httpPacket.ParentFrame.FrameNumber, "TCP " + tcpPacket.SourcePort, "TCP " + tcpPacket.DestinationPort, ApplicationLayerProtocol.Http, cookieParams);
}
}
}
}
}
else //reply
{
if (httpPacket.ServerBanner != null && httpPacket.ServerBanner.Length > 0)
{
sourceHost.AddHttpServerBanner(httpPacket.ServerBanner, tcpPacket.SourcePort);
}
if (httpPacket.WwwAuthenticateRealm != null && httpPacket.WwwAuthenticateRealm.Length > 0)
{
sourceHost.AddHostName(httpPacket.WwwAuthenticateRealm);
sourceHost.ExtraDetailsList["WWW-Authenticate realm"] = httpPacket.WwwAuthenticateRealm;
}
if (mainPacketHandler.FileStreamAssemblerList.ContainsAssembler(sourceHost, tcpPacket.SourcePort, destinationHost, tcpPacket.DestinationPort, true))
{
FileTransfer.FileStreamAssembler assembler = mainPacketHandler.FileStreamAssemblerList.GetAssembler(sourceHost, tcpPacket.SourcePort, destinationHost, tcpPacket.DestinationPort, true);
//http://www.mail-archive.com/[email protected]/msg08695.html
//There could also be no content-length when http-keepalives are not used.
//In that case, the client just collects all data till the TCP-FIN.
//-1 is set instead of null if Content-Length is not defined
if (httpPacket.ContentLength >= 0 || httpPacket.ContentLength == -1)
{
assembler.FileContentLength = httpPacket.ContentLength;
assembler.FileSegmentRemainingBytes = httpPacket.ContentLength;//we get the whole file in one segment (one serie of TCP packets)
}
if (httpPacket.ContentLength == 0)
{
mainPacketHandler.FileStreamAssemblerList.Remove(assembler, true);
}
else
{
if (httpPacket.ContentDispositionFilename != null)
{
assembler.Filename = httpPacket.ContentDispositionFilename;
}
//append content type extention to file name
if (httpPacket.ContentType != null && httpPacket.ContentType.Contains("/") && httpPacket.ContentType.IndexOf('/') < httpPacket.ContentType.Length - 1)
{
string extension = Utils.StringManglerUtil.GetExtension(httpPacket.ContentType);
/*
* string extension=httpPacket.ContentType.Substring(httpPacket.ContentType.IndexOf('/')+1);
* if(extension.Contains(";"))
* extension=extension.Substring(0, extension.IndexOf(";"));
* */
if (extension.Length > 0 &&
!assembler.Filename.EndsWith("." + extension, StringComparison.InvariantCultureIgnoreCase) &&
!(assembler.Filename.EndsWith("jpg", StringComparison.InvariantCultureIgnoreCase) && extension.Equals("jpeg", StringComparison.InvariantCultureIgnoreCase)) &&
!(assembler.Filename.EndsWith("htm", StringComparison.InvariantCultureIgnoreCase) && extension.Equals("html", StringComparison.InvariantCultureIgnoreCase)))
{
//append the content type as extension
assembler.Filename = assembler.Filename + "." + extension;
}
}
if (httpPacket.TransferEncoding == "chunked")
{
assembler.FileStreamType = FileTransfer.FileStreamTypes.HttpGetChunked;
}
if (httpPacket.ContentEncoding != null && httpPacket.ContentEncoding.Length > 0)
{
if (httpPacket.ContentEncoding.Equals("gzip"))//I'll only care aboute gzip for now
{
assembler.ContentEncoding = Packets.HttpPacket.ContentEncodings.Gzip;
}
else if (httpPacket.ContentEncoding.Equals("deflate"))//http://tools.ietf.org/html/rfc1950
{
assembler.ContentEncoding = Packets.HttpPacket.ContentEncodings.Deflate;
}
}
if (assembler.TryActivate())
{
//the assembler is now ready to receive data
if (httpPacket.MessageBody != null && httpPacket.MessageBody.Length > 0)
{
if (assembler.FileStreamType == FileTransfer.FileStreamTypes.HttpGetChunked || httpPacket.MessageBody.Length <= assembler.FileSegmentRemainingBytes || assembler.FileSegmentRemainingBytes == -1)
{
assembler.AddData(httpPacket.MessageBody, tcpPacket.SequenceNumber);
}
}
}
}
//}
//else {
// mainPacketHandler.FileStreamAssemblerList.Remove(assembler, true);
//}
}
}
return(true);
}
public int ExtractData(NetworkHost sourceHost, NetworkHost destinationHost, IEnumerable <PacketParser.Packets.AbstractPacket> packetList)
{
//Packets.UdpPacket udpPacket = null;
int parsedBytes = 0;
//Packets.ITransportLayerPacket transportLayerPacket = null;
FiveTuple ft = null;
foreach (Packets.AbstractPacket p in packetList)
{
if (p is Packets.ITransportLayerPacket transportLayerPacket)
{
//transportLayerPacket = (Packets.ITransportLayerPacket)p;
if (transportLayerPacket is Packets.UdpPacket)
{
ft = new FiveTuple(sourceHost, transportLayerPacket.SourcePort, destinationHost, transportLayerPacket.DestinationPort, FiveTuple.TransportProtocol.UDP);
}
else if (transportLayerPacket is Packets.TcpPacket)
{
ft = new FiveTuple(sourceHost, transportLayerPacket.SourcePort, destinationHost, transportLayerPacket.DestinationPort, FiveTuple.TransportProtocol.TCP);
}
}
if (p is Packets.SipPacket sipPacket)
{
//Packets.SipPacket sipPacket=(Packets.SipPacket)p;
System.Collections.Specialized.NameValueCollection nvc = new System.Collections.Specialized.NameValueCollection();
if (sipPacket.RequestMethod != null)
{
nvc.Add(sipPacket.RequestMethod.ToString(), sipPacket.MessageLine.Substring(sipPacket.RequestMethod.ToString().Length).Trim());
if (sipPacket.From != null && sipPacket.From.Length > 0)
{
sourceHost.AddNumberedExtraDetail("SIP User", this.ExtractSipAddressFromHeader(sipPacket.From));
}
if (sipPacket.Contact?.Length > 0)
{
sourceHost.AddNumberedExtraDetail("SIP User", this.ExtractSipAddressFromHeader(sipPacket.Contact));
}
//if (sipPacket.MessageLine.StartsWith(INVITE)) {
if (sipPacket.RequestMethod == SipPacket.RequestMethods.INVITE)
{
string to = null;
string from = null;
if (sipPacket.To != null && sipPacket.To.Length > 0)
{
destinationHost.AddNumberedExtraDetail("SIP User", this.ExtractSipAddressFromHeader(sipPacket.To));
}
if (ft != null && to != null && from != null && !String.IsNullOrEmpty(sipPacket.CallID))
{
nvc.Add("From", sipPacket.From);
nvc.Add("To", sipPacket.To);
nvc.Add("Call-ID", sipPacket.CallID);
}
}
else if (sipPacket.RequestMethod == SipPacket.RequestMethods.MESSAGE)
{
if (sipPacket.ContentLength > 0 && sipPacket.ContentType.StartsWith("text/plain", StringComparison.OrdinalIgnoreCase))
{
string message = Encoding.UTF8.GetString(sipPacket.ParentFrame.Data, sipPacket.MessageBodyStartIndex, sipPacket.ContentLength);
//sipPacket.ParentFrame.Data. sipPacket.MessageBodyStartIndex
string to = this.ExtractSipAddressFromHeader(sipPacket.To);
string from = this.ExtractSipAddressFromHeader(sipPacket.From);
string callId = sipPacket.CallID;
if (message?.Length > 0)
{
if (callId == null || callId.Length == 0)
{
callId = message;
}
this.MainPacketHandler.OnMessageDetected(new Events.MessageEventArgs(ApplicationLayerProtocol.Sip, sourceHost, destinationHost, sipPacket.ParentFrame.FrameNumber, sipPacket.ParentFrame.Timestamp, from, to, callId, message, sipPacket.HeaderFields, sipPacket.PacketLength));
}
}
}
}
nvc.Add(sipPacket.HeaderFields);
//Extract SIP headers like "X-msisdn" and "X-user-id" as explained by Sandro Gauci here: https://www.rtcsec.com/2020/09/01-smuggling-sip-headers-ftw/
foreach (string interestingSipHeader in sipPacket.HeaderFields.AllKeys.Where(k => k.Trim().StartsWith("X-", StringComparison.InvariantCultureIgnoreCase)))
{
sourceHost.AddNumberedExtraDetail("SIP header: " + interestingSipHeader, sipPacket.HeaderFields[interestingSipHeader]);
}
if (ft != null && nvc?.Count > 0)
{
this.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(sipPacket.ParentFrame.FrameNumber, ft, true, nvc, sipPacket.ParentFrame.Timestamp, "SIP session " + ft.ToString()));
}
if (!String.IsNullOrEmpty(sipPacket.UserAgent))
{
sourceHost.AddHttpUserAgentBanner(sipPacket.UserAgent);
}
if (sipPacket.SDP != null)
{
if (sipPacket.SDP.Port != null && sipPacket.SDP.IP != null && sipPacket.CallID != null && ft != null)
{
lock (callEndPoints) {
Tuple <System.Net.IPAddress, ushort, FiveTuple> endPoint = new Tuple <System.Net.IPAddress, ushort, FiveTuple>(sipPacket.SDP.IP, sipPacket.SDP.Port.Value, ft);
if (this.callEndPoints.ContainsKey(sipPacket.CallID))
{
Tuple <System.Net.IPAddress, ushort, FiveTuple> matchedTuple = null;
foreach (var previousEndPoint in this.callEndPoints[sipPacket.CallID])
{
if (previousEndPoint.Item3.EqualsIgnoreDirection(ft))
{
//Tuple<System.Net.IPAddress, ushort, FiveTuple> previousEndPoint = ;
if (!(previousEndPoint.Item1.Equals(endPoint.Item1) && previousEndPoint.Item2.Equals(endPoint.Item2)))
{
//this.callEndPoints.Remove(sipPacket.CallID);
matchedTuple = previousEndPoint;
if (sipPacket.From != null && sipPacket.To != null)
{
this.MainPacketHandler.OnVoipCallDetected(sipPacket.SDP.IP, sipPacket.SDP.Port.Value, previousEndPoint.Item1, previousEndPoint.Item2, sipPacket.CallID, this.ExtractSipAddressFromHeader(sipPacket.From), this.ExtractSipAddressFromHeader(sipPacket.To));
}
break;
}
}
}
if (matchedTuple == null)
{
this.callEndPoints[sipPacket.CallID].Add(endPoint);
}
if (matchedTuple != null)
{
this.callEndPoints[sipPacket.CallID].Remove(matchedTuple);
}
}
else
{
this.callEndPoints.Add(sipPacket.CallID, new List <Tuple <System.Net.IPAddress, ushort, FiveTuple> >()
{
endPoint
});
}
}
}
}
parsedBytes += sipPacket.PacketLength;
}
}
return(parsedBytes);
}
public int ExtractData(NetworkHost sourceHost, NetworkHost destinationHost, IEnumerable <PacketParser.Packets.AbstractPacket> packetList)
{
//Packets.UdpPacket udpPacket = null;
int parsedBytes = 0;
Packets.ITransportLayerPacket transportLayerPacket = null;
FiveTuple ft = null;
foreach (Packets.AbstractPacket p in packetList)
{
if (p is Packets.ITransportLayerPacket)
{
transportLayerPacket = (Packets.ITransportLayerPacket)p;
if (transportLayerPacket is Packets.UdpPacket)
{
ft = new FiveTuple(sourceHost, transportLayerPacket.SourcePort, destinationHost, transportLayerPacket.DestinationPort, FiveTuple.TransportProtocol.UDP);
}
else if (transportLayerPacket is Packets.TcpPacket)
{
ft = new FiveTuple(sourceHost, transportLayerPacket.SourcePort, destinationHost, transportLayerPacket.DestinationPort, FiveTuple.TransportProtocol.TCP);
}
}
if (p.GetType() == typeof(Packets.SipPacket))
{
Packets.SipPacket sipPacket = (Packets.SipPacket)p;
if (sipPacket.MessageLine.StartsWith(INVITE))
{
string to = null;
string from = null;
if (sipPacket.To != null && sipPacket.To.Length > 0)
{
to = sipPacket.To;
if (to.Contains(";"))
{
to = to.Substring(0, to.IndexOf(';'));
}
destinationHost.AddNumberedExtraDetail("SIP User", to);
//destinationHost.ExtraDetailsList["SIP User"]=to;
}
if (sipPacket.From != null && sipPacket.From.Length > 0)
{
from = sipPacket.From;
if (from.Contains(";"))
{
from = from.Substring(0, from.IndexOf(';'));
}
//destinationHost.AddNumberedExtraDetail("SIP User", from);
sourceHost.AddNumberedExtraDetail("SIP User", from);
//sourceHost.ExtraDetailsList["SIP User"]=from;
}
if (ft != null && to != null && from != null && !String.IsNullOrEmpty(sipPacket.CallID))
{
System.Collections.Specialized.NameValueCollection nvc = new System.Collections.Specialized.NameValueCollection {
{ "From", sipPacket.From },
{ "To", sipPacket.To },
{ "Call-ID", sipPacket.CallID }
};
this.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(sipPacket.ParentFrame.FrameNumber, ft, true, nvc, sipPacket.ParentFrame.Timestamp, "SIP session " + ft.ToString()));
}
}
if (!String.IsNullOrEmpty(sipPacket.UserAgent))
{
sourceHost.AddHttpUserAgentBanner(sipPacket.UserAgent);
}
if (sipPacket.SDP != null)
{
if (sipPacket.SDP.Port != null && sipPacket.SDP.IP != null && sipPacket.CallID != null && ft != null)
{
lock (callEndPoints) {
Tuple <System.Net.IPAddress, ushort, FiveTuple> endPoint = new Tuple <System.Net.IPAddress, ushort, FiveTuple>(sipPacket.SDP.IP, sipPacket.SDP.Port.Value, ft);
if (this.callEndPoints.ContainsKey(sipPacket.CallID))
{
Tuple <System.Net.IPAddress, ushort, FiveTuple> matchedTuple = null;
foreach (var previousEndPoint in this.callEndPoints[sipPacket.CallID])
{
if (previousEndPoint.Item3.EqualsIgnoreDirection(ft))
{
//Tuple<System.Net.IPAddress, ushort, FiveTuple> previousEndPoint = ;
if (!(previousEndPoint.Item1.Equals(endPoint.Item1) && previousEndPoint.Item2.Equals(endPoint.Item2)))
{
//this.callEndPoints.Remove(sipPacket.CallID);
matchedTuple = previousEndPoint;
if (sipPacket.From != null && sipPacket.To != null)
{
this.MainPacketHandler.OnVoipCallDetected(sipPacket.SDP.IP, sipPacket.SDP.Port.Value, previousEndPoint.Item1, previousEndPoint.Item2, sipPacket.CallID, sipPacket.From, sipPacket.To);
if (ft != null)
{
}
}
break;
}
}
}
if (matchedTuple == null)
{
this.callEndPoints[sipPacket.CallID].Add(endPoint);
}
if (matchedTuple != null)
{
this.callEndPoints[sipPacket.CallID].Remove(matchedTuple);
}
}
else
{
this.callEndPoints.Add(sipPacket.CallID, new List <Tuple <System.Net.IPAddress, ushort, FiveTuple> >()
{
endPoint
});
}
}
}
}
parsedBytes += sipPacket.PacketLength;
}
}
return(parsedBytes);
}
public void ExtractData(ref NetworkHost sourceHost, NetworkHost destinationHost, IEnumerable <PacketParser.Packets.AbstractPacket> packetList)
{
//Packets.UdpPacket udpPacket = null;
Packets.ITransportLayerPacket transportLayerPacket = null;
FiveTuple ft = null;
foreach (Packets.AbstractPacket p in packetList)
{
/*
* Packets.IIPPacket ipPacket;
* if (p is Packets.IIPPacket) {
* ipPacket = p as Packets.IIPPacket;
* }
*/
if (p is Packets.ITransportLayerPacket)
{
transportLayerPacket = (Packets.ITransportLayerPacket)p;
if (transportLayerPacket is Packets.UdpPacket)
{
ft = new FiveTuple(sourceHost, transportLayerPacket.SourcePort, destinationHost, transportLayerPacket.DestinationPort, FiveTuple.TransportProtocol.UDP);
}
else if (transportLayerPacket is Packets.TcpPacket)
{
ft = new FiveTuple(sourceHost, transportLayerPacket.SourcePort, destinationHost, transportLayerPacket.DestinationPort, FiveTuple.TransportProtocol.TCP);
}
}
if (p.GetType() == typeof(Packets.SipPacket))
{
Packets.SipPacket sipPacket = (Packets.SipPacket)p;
if (sipPacket.MessageLine.StartsWith(INVITE))
{
string to = null;
string from = null;
if (sipPacket.To != null && sipPacket.To.Length > 0)
{
to = sipPacket.To;
if (to.Contains(";"))
{
to = to.Substring(0, to.IndexOf(';'));
}
destinationHost.AddNumberedExtraDetail("SIP User", to);
//destinationHost.ExtraDetailsList["SIP User"]=to;
}
if (sipPacket.From != null && sipPacket.From.Length > 0)
{
from = sipPacket.From;
if (from.Contains(";"))
{
from = from.Substring(0, from.IndexOf(';'));
}
//destinationHost.AddNumberedExtraDetail("SIP User", from);
sourceHost.AddNumberedExtraDetail("SIP User", from);
//sourceHost.ExtraDetailsList["SIP User"]=from;
}
if (ft != null && to != null && from != null && !String.IsNullOrEmpty(sipPacket.CallID))
{
System.Collections.Specialized.NameValueCollection nvc = new System.Collections.Specialized.NameValueCollection {
{ "From", sipPacket.From },
{ "To", sipPacket.To },
{ "Call-ID", sipPacket.CallID }
};
this.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(sipPacket.ParentFrame.FrameNumber, ft, true, nvc, sipPacket.ParentFrame.Timestamp, "SIP session " + ft.ToString()));
}
}
if (!String.IsNullOrEmpty(sipPacket.UserAgent))
{
sourceHost.AddHttpUserAgentBanner(sipPacket.UserAgent);
}
if (sipPacket.SDP != null)
{
if (sipPacket.SDP.Port != null && sipPacket.SDP.IP != null && sipPacket.CallID != null && ft != null)
{
lock (callEndPoints) {
Tuple <System.Net.IPAddress, ushort, FiveTuple> endPoint = new Tuple <System.Net.IPAddress, ushort, FiveTuple>(sipPacket.SDP.IP, sipPacket.SDP.Port.Value, ft);
if (this.callEndPoints.ContainsKey(sipPacket.CallID))
{
Tuple <System.Net.IPAddress, ushort, FiveTuple> matchedTuple = null;
foreach (var previousEndPoint in this.callEndPoints[sipPacket.CallID])
{
if (previousEndPoint.Item3.EqualsIgnoreDirection(ft))
{
//Tuple<System.Net.IPAddress, ushort, FiveTuple> previousEndPoint = ;
if (!(previousEndPoint.Item1.Equals(endPoint.Item1) && previousEndPoint.Item2.Equals(endPoint.Item2)))
{
//this.callEndPoints.Remove(sipPacket.CallID);
matchedTuple = previousEndPoint;
if (sipPacket.From != null && sipPacket.To != null)
{
this.MainPacketHandler.OnVoipCallDetected(sipPacket.SDP.IP, sipPacket.SDP.Port.Value, previousEndPoint.Item1, previousEndPoint.Item2, sipPacket.CallID, sipPacket.From, sipPacket.To);
if (ft != null)
{
}
}
break;
}
}
}
if (matchedTuple == null)
{
this.callEndPoints[sipPacket.CallID].Add(endPoint);
}
if (matchedTuple != null)
{
this.callEndPoints[sipPacket.CallID].Remove(matchedTuple);
}
}
else
{
this.callEndPoints.Add(sipPacket.CallID, new List <Tuple <System.Net.IPAddress, ushort, FiveTuple> >()
{
endPoint
});
}
}
/*
* //check if we have a reverse tuple
* Tuple<System.Net.IPAddress, System.Net.IPAddress> reverseIpPair = new Tuple<System.Net.IPAddress, System.Net.IPAddress>(destinationHost.IPAddress, sourceHost.IPAddress);
*
* TODO: Använd CALL ID istället som unik nyckel!
*
* lock (this.endPointCandidates) {
* if (this.endPointCandidates.ContainsKey(reverseIpPair)) {
* ushort reversePort = this.endPointCandidates[reverseIpPair];
* this.endPointCandidates.Remove(reverseIpPair);
*
* if (this.udpPayloadProtocolFinder != null && !String.IsNullOrEmpty(sipPacket.SDP.Protocol) && sipPacket.SDP.Protocol.StartsWith("RTP", StringComparison.InvariantCultureIgnoreCase))
* this.udpPayloadProtocolFinder.SetPayload(sourceHost.IPAddress, sipPacket.SDP.Port.Value, destinationHost.IPAddress, reversePort, ApplicationLayerProtocol.Rtp);//this might come in too late because the UDP packet has probably already been parsed by now.
* if(sipPacket.From != null && sipPacket.To != null) {
* FiveTuple fiveTuple = new FiveTuple(sourceHost, sipPacket.SDP.Port.Value, destinationHost, reversePort, FiveTuple.TransportProtocol.UDP);
* this.MainPacketHandler.OnVoipCallDetected(fiveTuple, sipPacket.From, sipPacket.To);
* System.Collections.Specialized.NameValueCollection nvc = new System.Collections.Specialized.NameValueCollection();
* nvc.Add("From", sipPacket.From);
* nvc.Add("To", sipPacket.To);
* this.MainPacketHandler.OnParametersDetected(new Events.ParametersEventArgs(sipPacket.ParentFrame.FrameNumber, fiveTuple, true, nvc, sipPacket.ParentFrame.Timestamp, "SIP setup of call " + fiveTuple.ToString()));
* }
*
* }
* else {
* Tuple<System.Net.IPAddress, System.Net.IPAddress> ipPair = new Tuple<System.Net.IPAddress, System.Net.IPAddress>(sourceHost.IPAddress, destinationHost.IPAddress);
* if (this.endPointCandidates.ContainsKey(ipPair))
* this.endPointCandidates[ipPair] = sipPacket.SDP.Port.Value;
* else
* this.endPointCandidates.Add(ipPair, sipPacket.SDP.Port.Value);
* }
* }
*/
}
//rtpPacketHandler.NewRtpEndPoints.Enqueue(new Tuple<System.Net.IPAddress, System.Net.IPAddress, ushort>(destinationHost.IPAddress, sourceHost.IPAddress, sipPacket.SDP.Port.Value));
}
}
}
}