Exemplo n.º 1
0
        public override IEnumerable <AbstractPacket> GetSubPackets(bool includeSelfReference)
        {
            if (includeSelfReference)
            {
                yield return(this);
            }
            //List<Packet> subPackets=new List<Packet>();
            if (PacketStartIndex + 8 < PacketEndIndex)
            {
                AbstractPacket packet;

                /*
                 * if(destinationPort==53 || sourcePort==53 || destinationPort==5353 || sourcePort==5353) {//DNS or Multicast DNS http://www.multicastdns.org/
                 *  try {
                 *      packet=new DnsPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse DNS packet ("+e.Message+")"));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 * }
                 * else if(destinationPort==67 || destinationPort==68 || sourcePort==67 || sourcePort==68) {
                 *  try {
                 *      packet=new DhcpPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse DHCP (or BOOTP) protocol: "+e.Message));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *
                 * }
                 * else if(destinationPort==69 || sourcePort==69) {
                 *  try {
                 *      packet=new TftpPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse NetBiosNameServicePacket packet ("+e.Message+")"));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 * }
                 * else if(destinationPort==137 || sourcePort==137) {
                 *  try {
                 *      packet=new NetBiosNameServicePacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse NetBiosNameServicePacket packet ("+e.Message+")"));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 * }
                 * else if(destinationPort==138 || sourcePort==138) {
                 *  try {
                 *      packet=new NetBiosDatagramServicePacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse NetBiosDatagramServicePacket packet ("+e.Message+")"));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 * }
                 * else if (destinationPort == 514 || sourcePort == 514) {
                 *  try {
                 *      packet = new SyslogPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                 *  }
                 *  catch (Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse Syslog packet (" + e.Message + ")"));
                 *      packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                 *  }
                 * }
                 * else if(destinationPort==1900 || sourcePort==1900) {
                 *  try {
                 *      packet=new UpnpPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse UPnP packet ("+e.Message+")"));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 * }
                 * else if(destinationPort==5060 || sourcePort==5060) {
                 *  try {
                 *      packet=new SipPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 *  catch(Exception e) {
                 *      if (!this.ParentFrame.QuickParse)
                 *          ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex+8, PacketEndIndex, "Cannot parse SIP packet ("+e.Message+")"));
                 *      packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 *  }
                 * }
                 * else {
                 *  packet=new RawPacket(ParentFrame, PacketStartIndex+8, PacketEndIndex);
                 * }
                 * */
                ApplicationLayerProtocol l7Protocol = UdpPortProtocolFinder.Instance.GetApplicationLayerProtocol(TransportLayerProtocol.UDP, sourcePort, destinationPort);

                if (l7Protocol == ApplicationLayerProtocol.Dns)  //DNS or Multicast DNS http://www.multicastdns.org/
                {
                    try {
                        packet = new DnsPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse DNS packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Dhcp)
                {
                    try {
                        packet = new DhcpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse DHCP (or BOOTP) protocol: " + e.Message));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Tftp)
                {
                    try {
                        packet = new TftpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse NetBiosNameServicePacket packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.NetBiosNameService)
                {
                    try {
                        packet = new NetBiosNameServicePacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse NetBiosNameServicePacket packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.NetBiosDatagramService)
                {
                    try {
                        packet = new NetBiosDatagramServicePacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse NetBiosDatagramServicePacket packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Syslog)
                {
                    try {
                        packet = new SyslogPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse Syslog packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Upnp)
                {
                    try {
                        packet = new UpnpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse UPnP packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Sip)
                {
                    try {
                        packet = new SipPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse SIP packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else
                {
                    packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                }
                yield return(packet);

                foreach (AbstractPacket subPacket in packet.GetSubPackets(false))
                {
                    yield return(subPacket);
                }
            }
        }
        public override IEnumerable <AbstractPacket> GetSubPackets(bool includeSelfReference)
        {
            if (includeSelfReference)
            {
                yield return(this);
            }
            //List<Packet> subPackets=new List<Packet>();
            if (PacketStartIndex + 8 < PacketEndIndex)
            {
                AbstractPacket packet;

                ApplicationLayerProtocol l7Protocol = UdpPortProtocolFinder.Instance.GetApplicationLayerProtocol(FiveTuple.TransportProtocol.UDP, sourcePort, destinationPort);
                if (l7Protocol == ApplicationLayerProtocol.Unknown && UdpPortProtocolFinder.PipiInstance != null)
                {
                    l7Protocol = UdpPortProtocolFinder.PipiInstance.GetApplicationLayerProtocol(this);//do a second attempt using PIPI (NM Pro only)
                }


                if (l7Protocol == ApplicationLayerProtocol.Dns)      //DNS or Multicast DNS http://www.multicastdns.org/
                {
                    try {
                        packet = new DnsPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse DNS packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Dhcp)
                {
                    try {
                        packet = new DhcpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse DHCP (or BOOTP) protocol: " + e.Message));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Tftp)
                {
                    try {
                        packet = new TftpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse NetBiosNameServicePacket packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.NetBiosNameService)
                {
                    try {
                        packet = new NetBiosNameServicePacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse NetBiosNameServicePacket packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.NetBiosDatagramService)
                {
                    try {
                        packet = new NetBiosDatagramServicePacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse NetBiosDatagramServicePacket packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Snmp)
                {
                    try {
                        packet = new SnmpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse SNMP packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Syslog)
                {
                    try {
                        packet = new SyslogPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse Syslog packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Upnp)
                {
                    try {
                        packet = new UpnpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse UPnP packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Sip)
                {
                    try {
                        packet = new SipPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse SIP packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.Rtp)
                {
                    try {
                        packet = new RtpPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse RTP packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else if (l7Protocol == ApplicationLayerProtocol.VXLAN)
                {
                    try {
                        packet = new VxlanPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                    catch (Exception e) {
                        if (!this.ParentFrame.QuickParse)
                        {
                            ParentFrame.Errors.Add(new Frame.Error(ParentFrame, PacketStartIndex + 8, PacketEndIndex, "Cannot parse VXLAN packet (" + e.Message + ")"));
                        }
                        packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                    }
                }
                else
                {
                    packet = new RawPacket(ParentFrame, PacketStartIndex + 8, PacketEndIndex);
                }
                yield return(packet);

                foreach (AbstractPacket subPacket in packet.GetSubPackets(false))
                {
                    yield return(subPacket);
                }
            }
        }
        public override IEnumerable <AbstractPacket> GetSubPackets(bool includeSelfReference)
        {
            if (includeSelfReference)
            {
                yield return(this);
            }
            //same as for Ethernet's GetSubPackets()
            if (PacketStartIndex + 4 < PacketEndIndex)
            {
                AbstractPacket packet;

                /*
                 * if(this.etherType==(ushort)Ethernet2Packet.EtherTypes.IPv4) {
                 *  //IPv4 packet
                 *  packet=new IPv4Packet(this.ParentFrame, PacketStartIndex+4, PacketEndIndex);
                 * }
                 * else if(this.etherType==(ushort)Ethernet2Packet.EtherTypes.ARP) {
                 *  packet=new ArpPacket(this.ParentFrame, PacketStartIndex+4, PacketEndIndex);
                 *  //ARP-packet
                 * }
                 * else {
                 *  //something else
                 *  packet=new RawPacket(this.ParentFrame, PacketStartIndex+4, PacketEndIndex);
                 * }*/

                //copied from Ethernet2Packet.cs
                if (this.etherType == (ushort)Ethernet2Packet.EtherTypes.IPv4)
                {
                    //IPv4 packet
                    packet = new IPv4Packet(this.ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                }
                else if (this.etherType == (ushort)Ethernet2Packet.EtherTypes.IPv6)
                {
                    //IPv6 packet
                    packet = new IPv6Packet(this.ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                }
                //else if(this.ParentFrame.Data[PacketStartIndex+12]==0x08 && this.ParentFrame.Data[PacketStartIndex+13]==0x06) {
                else if (this.etherType == (ushort)Ethernet2Packet.EtherTypes.ARP)
                {
                    packet = new ArpPacket(this.ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                    //ARP-packet
                }
                else if (this.etherType == (ushort)Ethernet2Packet.EtherTypes.IEEE802_1Q)
                {
                    //VLAN
                    packet = new IEEE_802_1Q_VlanPacket(this.ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                }
                else if (this.etherType == (ushort)Ethernet2Packet.EtherTypes.PPPoE)
                {
                    packet = new PointToPointOverEthernetPacket(ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                }
                //etherType might actually be a content length if it is an IEEE 802.3 packet
                else if (this.etherType < 0x0600)
                {
                    //the etherType showed to actually be a length value
                    packet = new LogicalLinkControlPacket(this.ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                }
                else
                {
                    //something else
                    packet = new RawPacket(this.ParentFrame, PacketStartIndex + 4, PacketEndIndex);
                }
                yield return(packet);

                foreach (AbstractPacket subPacket in packet.GetSubPackets(false))
                {
                    yield return(subPacket);
                }
            }
        }
Exemplo n.º 4
0
        public override IEnumerable <AbstractPacket> GetSubPackets(bool includeSelfReference)
        {
            if (includeSelfReference)
            {
                yield return(this);
            }
            if (this.fragmentOffset != 0 || this.moreFragmentsFlag)
            {
                if (!this.ParentFrame.QuickParse)
                {
                    byte[] reassembledIpFrameData = null;
                    string fragmentID             = this.GetFragmentIdentifier();
                    lock (PacketHandler.Ipv4Fragments) {
                        List <IPv4Packet> ipPacketList;
                        if (!PacketHandler.Ipv4Fragments.ContainsKey(fragmentID))
                        {
                            ipPacketList = new List <IPv4Packet>();
                            PacketHandler.Ipv4Fragments.Add(fragmentID, ipPacketList);
                        }
                        else
                        {
                            ipPacketList = PacketHandler.Ipv4Fragments[fragmentID];
                        }
                        ipPacketList.Add(this);
                        //see if we have all fragments of a complete IP packet
                        bool allFragmentsHaveMoreFragmentsFlag = true;
                        int  completeIpPacketPayloadLength     = 0;
                        foreach (IPv4Packet p in ipPacketList)
                        {
                            completeIpPacketPayloadLength += p.PayloadLength;
                            if (!p.moreFragmentsFlag)
                            {
                                allFragmentsHaveMoreFragmentsFlag = false;
                            }
                        }
                        if (!allFragmentsHaveMoreFragmentsFlag)
                        {
                            //we might actually have all the fragments!
                            reassembledIpFrameData = new byte[this.HeaderLength + completeIpPacketPayloadLength];
                            if (reassembledIpFrameData.Length > UInt16.MaxValue)
                            {
                                PacketHandler.Ipv4Fragments.Remove(fragmentID);
                                yield break;
                            }

                            foreach (IPv4Packet p in ipPacketList)
                            {
                                if (p.fragmentOffset + this.HeaderLength + p.PayloadLength > reassembledIpFrameData.Length)
                                {
                                    yield break;
                                }
                                Array.Copy(p.ParentFrame.Data, p.PacketStartIndex + p.HeaderLength, reassembledIpFrameData, p.fragmentOffset + this.HeaderLength, p.PayloadLength);
                            }
                            PacketHandler.Ipv4Fragments.Remove(fragmentID);//we don't want to reassemble this IP frame any more
                            //we now need to create a fake frame and run GetSubPackets(false) on it
                        }
                    }//Release lock on PacketHandler.Ipv4Fragments
                    if (reassembledIpFrameData != null && reassembledIpFrameData.Length > this.HeaderLength)
                    {
                        Array.Copy(this.ParentFrame.Data, this.PacketStartIndex, reassembledIpFrameData, 0, this.headerLength);

                        //totalLength = (ushort)reassembledIpFrameData.Length;
                        Utils.ByteConverter.ToByteArray((ushort)reassembledIpFrameData.Length, reassembledIpFrameData, 2);
                        //moreFragmentsFlag = false;
                        //fragmentOffset = 0;
                        reassembledIpFrameData[6] = 0;
                        reassembledIpFrameData[7] = 0;



                        Frame      reassembledFrame    = new Frame(this.ParentFrame.Timestamp, reassembledIpFrameData, ParentFrame.FrameNumber);
                        IPv4Packet reassembledIpPacket = new IPv4Packet(reassembledFrame, 0, reassembledFrame.Data.Length - 1);
                        reassembledIpPacket.fragmentOffset    = 0;
                        reassembledIpPacket.moreFragmentsFlag = false;
                        reassembledIpPacket.totalLength       = (ushort)reassembledIpFrameData.Length;

                        foreach (AbstractPacket subPacket in reassembledIpPacket.GetSubPackets(false))
                        {
                            yield return(subPacket);
                        }
                    }
                }
            }
            else if (PacketStartIndex + headerLength < PacketEndIndex && this.fragmentOffset == 0)
            {
                AbstractPacket packet;
                try {
                    if (this.protocol == (byte)IPv4Packet.RFC1700Protocols.TCP)
                    {
                        //TCP packet
                        packet = new TcpPacket(this.ParentFrame, PacketStartIndex + headerLength, PacketEndIndex);
                    }
                    else if (this.protocol == (byte)IPv4Packet.RFC1700Protocols.UDP)
                    {
                        //UDP packet
                        packet = new UdpPacket(this.ParentFrame, PacketStartIndex + headerLength, PacketEndIndex);
                    }
                    else if (this.protocol == (byte)IPv4Packet.RFC1700Protocols.IPv6)
                    {
                        packet = new IPv6Packet(this.ParentFrame, PacketStartIndex + headerLength, PacketEndIndex);
                    }
                    else if (this.protocol == (byte)IPv4Packet.RFC1700Protocols.GRE)
                    {
                        packet = new GrePacket(this.ParentFrame, PacketStartIndex + headerLength, PacketEndIndex);
                    }
                    else
                    {
                        packet = new RawPacket(ParentFrame, PacketStartIndex + headerLength, PacketEndIndex);
                    }
                }
                catch (Exception) {
                    packet = new RawPacket(ParentFrame, PacketStartIndex + headerLength, PacketEndIndex);
                }
                yield return(packet);

                foreach (AbstractPacket subPacket in packet.GetSubPackets(false))
                {
                    yield return(subPacket);
                }
            }
        }
Exemplo n.º 5
0
        internal IEnumerable <AbstractPacket> GetSubPackets(bool includeSelfReference, ISessionProtocolFinder protocolFinder, bool clientToServer)
        {
            if (includeSelfReference)
            {
                yield return(this);
            }
            if (PacketStartIndex + dataOffsetByteCount < PacketEndIndex)
            {
                AbstractPacket packet = null;
                if (protocolFinder.GetConfirmedApplicationLayerProtocol() != ApplicationLayerProtocol.Unknown)
                {
                    try {
                        packet = this.GetProtocolPacket(protocolFinder.GetConfirmedApplicationLayerProtocol(), clientToServer);
                    }
                    catch { }
                }
                if (packet == null)
                {
                    foreach (ApplicationLayerProtocol protocol in protocolFinder.GetProbableApplicationLayerProtocols())
                    {
                        try {
                            packet = this.GetProtocolPacket(protocol, clientToServer);
                            if (packet != null)
                            {
                                protocolFinder.SetConfirmedApplicationLayerProtocol(protocol, true);
                                break;
                            }

                            /*
                             * if (protocol == ApplicationLayerProtocol.Dns) {
                             *  packet = new DnsPacket(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex);
                             *  protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Dns;
                             *  break;
                             * }
                             * else if (protocol == ApplicationLayerProtocol.FtpControl) {
                             *  if (FtpPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, clientToServer, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.FtpControl;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Http) {
                             *  if (HttpPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Http;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Irc) {
                             *  if (IrcPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Irc;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.IEC_104) {
                             *  if (IEC_60870_5_104Packet.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.IEC_104;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Imap) {
                             *  packet = new ImapPacket(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, clientToServer);
                             *  protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Imap;
                             *  break;
                             * }
                             * else if (protocol == ApplicationLayerProtocol.ModbusTCP) {
                             *  if (ModbusTcpPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, this.sourcePort, this.destinationPort, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.ModbusTCP;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.NetBiosNameService) {
                             *  packet = new NetBiosNameServicePacket(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex);
                             *  protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.NetBiosNameService;
                             *  break;
                             * }
                             * else if (protocol == ApplicationLayerProtocol.NetBiosSessionService) {
                             *  //if (NetBiosSessionService.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *  if (NetBiosSessionService.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, this.sourcePort, this.destinationPort, out packet)) {
                             *      //packet = new NetBiosSessionService(ParentFrame, PacketStartIndex+dataOffsetByteCount, PacketEndIndex, false);
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.NetBiosSessionService;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.OpenFlow) {
                             *  if (OpenFlowPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.OpenFlow;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Oscar) {
                             *  if (OscarPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Oscar;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.OscarFileTransfer) {
                             *  if (OscarFileTransferPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.OscarFileTransfer;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Pop3) {
                             *  packet = new Pop3Packet(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, clientToServer);
                             *  protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Pop3;
                             *  break;
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Smtp) {
                             *  packet = new SmtpPacket(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, clientToServer);
                             *  protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Smtp;
                             *  break;
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Socks) {
                             *  if (SocksPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, clientToServer, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Socks;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.SpotifyServerProtocol) {
                             *  if (SpotifyKeyExchangePacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, clientToServer, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.SpotifyServerProtocol;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Ssh) {
                             *  if (SshPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Ssh;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Ssl) {
                             *  if (SslPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Ssl;
                             *      break;
                             *  }
                             * }
                             * else if (protocol == ApplicationLayerProtocol.TabularDataStream) {
                             *  packet = new TabularDataStreamPacket(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex);
                             *  protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.TabularDataStream;
                             *  break;
                             * }
                             * else if (protocol == ApplicationLayerProtocol.Tpkt) {
                             *  if (TpktPacket.TryParse(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex, this, out packet)) {
                             *      protocolFinder.ConfirmedApplicationLayerProtocol = ApplicationLayerProtocol.Tpkt;
                             *      break;
                             *  }
                             * }*/
                        }
                        catch (Exception) {
                            packet = null;
                        }
                    }
                }
                if (packet == null)
                {
                    packet = new RawPacket(ParentFrame, PacketStartIndex + dataOffsetByteCount, PacketEndIndex);
                }
                yield return(packet);

                foreach (AbstractPacket subPacket in packet.GetSubPackets(false))
                {
                    yield return(subPacket);
                }
            }
        }