Move TryGetPac to an extension method

Author: MaximeKjaer

Kerberos.NET/Entities/Krb/KrbEncTicketPart.cs

@@ -4,7 +4,6 @@
 // -----------------------------------------------------------------------
 
 using System;
-using System.Linq;
 using Kerberos.NET.Asn1;
 
 namespace Kerberos.NET.Entities
@@ -17,42 +16,5 @@ public KrbEncTicketPart DecodeAsApplication(ReadOnlyMemory<byte> data)
         {
             return DecodeApplication(data);
         }
-
-        public bool TryGetPac(out PrivilegedAttributeCertificate pac)
-        {
-            pac = null;
-
-            KrbAuthorizationData adIfRelevantEntry = this.AuthorizationData?.FirstOrDefault(ad => ad.Type == AuthorizationDataType.AdIfRelevant);
-            if (adIfRelevantEntry == null)
-            {
-                return false;
-            }
-
-            KrbAuthorizationDataSequence adIfRelevant = null;
-            try
-            {
-                adIfRelevant = KrbAuthorizationDataSequence.Decode(adIfRelevantEntry.Data);
-            }
-            catch
-            {
-                return false;
-            }
-
-            KrbAuthorizationData pacEntry = adIfRelevant?.AuthorizationData?.First(ad => ad.Type == AuthorizationDataType.AdWin2kPac);
-            if (pacEntry == null)
-            {
-                return false;
-            }
-
-            try
-            {
-                pac = new PrivilegedAttributeCertificate(pacEntry);
-                return true;
-            }
-            catch
-            {
-                return false;
-            }
-        }
     }
 }

Kerberos.NET/Entities/Krb/KrbExtensions.cs

@@ -0,0 +1,49 @@
+// -----------------------------------------------------------------------
+// Licensed to The .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// -----------------------------------------------------------------------
+
+using System.Linq;
+
+namespace Kerberos.NET.Entities
+{
+    public static class KrbExtensions
+    {
+        public static bool TryGetPac(this KrbEncTicketPart encTicketPart, out PrivilegedAttributeCertificate pac)
+        {
+            pac = null;
+
+            KrbAuthorizationData adIfRelevantEntry = encTicketPart.AuthorizationData?.FirstOrDefault(ad => ad.Type == AuthorizationDataType.AdIfRelevant);
+            if (adIfRelevantEntry == null)
+            {
+                return false;
+            }
+
+            KrbAuthorizationDataSequence adIfRelevant = null;
+            try
+            {
+                adIfRelevant = KrbAuthorizationDataSequence.Decode(adIfRelevantEntry.Data);
+            }
+            catch
+            {
+                return false;
+            }
+
+            KrbAuthorizationData pacEntry = adIfRelevant?.AuthorizationData?.First(ad => ad.Type == AuthorizationDataType.AdWin2kPac);
+            if (pacEntry == null)
+            {
+                return false;
+            }
+
+            try
+            {
+                pac = new PrivilegedAttributeCertificate(pacEntry);
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+    }
+}