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);
           }

       }
   }