Initial

Authorization/Authorizations.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MarketDataServer.Authorization
+{
+  public class Authorizations
+  {
+    private Dictionary<String, String> authorizationDictionary = null;
+    private List<String> validUsers = null;
+    private static Authorizations authorizations = null;
+    private bool isEnabled=true;
+    private Authorizations()
+    {
+      validUsers = new List<String>();
+      authorizationDictionary=new Dictionary<String,String>();
+      validUsers.Add("sean");
+    }
+    public static Authorizations GetInstance()
+    {
+      lock (typeof(Authorizations))
+      {
+        if (null == authorizations) authorizations = new Authorizations();
+      }
+      return authorizations;
+    }
+    public bool IsEnabled
+    {
+      get{return isEnabled;}
+      set{isEnabled=value;}
+    }
+    public bool IsAuthorized(String token)
+    {
+      lock (this)
+      {
+        if(!IsEnabled)return true;
+        return authorizationDictionary.ContainsKey(token);
+      }
+    }
+    public String GetAuthenticationToken()
+    {
+      lock (this)
+      {
+        String token = Guid.NewGuid().ToString();
+        authorizationDictionary.Add(token, token);
+        return token;
+      }
+    }
+    public bool IsValidUser(String user)
+    {
+      lock (this)
+      {
+        return validUsers.Any(x => x.Equals(user));
+      }
+    }
+    public static String Xor(String input, int magic)
+    {
+      StringBuilder sb = new StringBuilder();
+      foreach (char ch in input) sb.Append((char)(ch ^ (char)magic));
+      return sb.ToString();
+    }
+  }
+}