Token validation

Controllers/Managers/TokenManager.cs

@@ -128,7 +128,7 @@ namespace Icarus.Controllers.Managers
             var result = false;
             var token = DecodeToken(accessToken);
 
-            if (token == null)
+            if (token == null || token.Erroneous())
             {
                 return result;
             }
@@ -148,6 +148,8 @@ namespace Icarus.Controllers.Managers
             var rsaParams = GetRSAPublic(_publicKey);
             Token tok = null;
 
+            try
+            {
                 using (var rsa = new RSACryptoServiceProvider())
                 {
                     rsa.ImportParameters(rsaParams);
@@ -162,6 +164,11 @@ namespace Icarus.Controllers.Managers
                     var json = decoder.Decode(accessToken);
                     tok = JsonConvert.DeserializeObject<Token>(json);
                 }
+            }
+            catch (Exception ex)
+            {
+                _logger.Error("An error occurred: {0}", ex.Message);
+            }
 
 
             return tok;

Models/Token.cs

@@ -41,6 +41,16 @@ namespace Icarus.Models
 
             return result;
         }
+
+        public bool Erroneous()
+        {
+            var result = true;
+            Func<string, bool> isEmpty = a => string.IsNullOrEmpty(a);
+            result = (!isEmpty(Scope) && !isEmpty(Audience) && !isEmpty(Issuer) &&
+                Expiration > 0 && Issued > 0) ? false : true;
+
+            return result;
+        }
         #endregion
     }
 }