6237 Programmering II (Csharp) Agenda/solution 2

class Program
    {
        static StreamWriter outFile;
        static StreamReader inFile;

        static List<Log> packets = new List<Log>();

        //     47 4.635842000    172.16.236.177        8.8.8.8               DNS      85     Standard query 0x2063  A lh4.googleusercontent.com
        static void analyze(List<String> lines)
        {
            if (lines.Count < 2) return;

            //Protokol navnet står fra plads 69 og 9 pladser frem
            string protocol = lines[1].Substring(67, 9);

            //Tilføj også kode der kan læse Source og Destination
            string source = lines[1].Substring(23, 22).Trim();
            string dest = lines[1].Substring(45, 22).Trim();

            string info = lines[1].Substring(83).Trim();

            if (protocol.Trim().ToUpper() == "ARP")
            {
                
            }

            if (protocol.Trim().ToUpper() == "DNS")
            {
                //Tilføj kode her der tæller antallet af DNS og gemmer den URL der søges på
                if (info.Contains("Standard query 0x")) {

                    string[] infoSplit = info.Split(' ');
                    packets.Add(new DnsQ(source, dest, protocol.Trim(), infoSplit[2], infoSplit[5]));

                } else
                {
                    string[] infoSplit = info.Split(' ');

                    var query = packets.Find(x => {

                        if (x.GetType() == typeof(DnsQ))
                            return ((DnsQ)x).Id == infoSplit[2];
                        else
                            return false;
                    });

                    packets.Add(new DnsR(source, dest, protocol.Trim(), (DnsQ)query, info));
                }

            }
        }

        static Dictionary<string, int> web = new Dictionary<string, int>();
        static void AddWebAddress(String address)
        {
            if (web.ContainsKey(address))
                web[address]++;
            else
                web[address] = 1;
        }


        //static void Main(string[] args)
        static void Main(string[] args)
        {
            inFile = new StreamReader("logfile.txt");
            outFile = new StreamWriter("outLogs.txt");

            String line;
            List<String> lines = new List<string>();

            while (!inFile.EndOfStream)
            {
                line = inFile.ReadLine();
                //Hvis line starter med No. er det en ny pakke, så skal vi først analysere den gamle
                if (line.StartsWith("No.") || inFile.EndOfStream)
                {
                    analyze(lines);
                    lines = new List<string>();
                }
                lines.Add(line);
            }
            inFile.Close();
            outFile.Close();

            

            Console.ReadLine();
        }
    }

    public class Log
    {
        public string Source { get; set; }
        public string Destination { get; set; }
        public string Protocol { get; set; }

        public Log(string source, string destination, string protocol)
        {
            Source = source;
            Destination = destination;
            Protocol = protocol;
        }
    }

    public class DnsQ : Log
    {
        public string Id { get; set; }
        public string Url { get; set; }

        public DnsQ(string source, string destination, string protocol, string id, string url):base(source, destination, protocol)
        {
            Id = id;
            Url = url;
        }
    }

    public class DnsR : Log
    {
        public DnsQ Query { get; set; }
        private List<string> ipList = new List<string>();

        public DnsR(string source, string destination, string protocol, DnsQ query, string infoString):base(source, destination, protocol)
        {
            Query = query;

            bool saveNext = false;
            foreach(string s in infoString.Split(' '))
            {
                if (s == "A") saveNext = true;
                else saveNext = false;

                if (saveNext)
                    ipList.Add(s);
            }

        }
    }