Folder structure reconstruction

2016-12-09 15:41:35 +01:00
parent df48102215
commit c4c32efb04
98 changed files with 5 additions and 2 deletions
--- a/MailServer/DNS/DnsRequestHeader.cs
+++ b/MailServer/DNS/DnsRequestHeader.cs
@ -0,0 +1,75 @@
+namespace DnsClient
+{
+    public class DnsRequestHeader
+    {
+        public const int HeaderLength = 12;
+
+        private ushort _flags = 0;
+
+        public ushort RawFlags => _flags;
+
+        public DnsHeaderFlag HeaderFlags
+        {
+            get
+            {
+                return (DnsHeaderFlag)_flags;
+            }
+            set
+            {
+                _flags &= (ushort)~(DnsHeaderFlag.IsCheckingDisabled);
+                _flags &= (ushort)~(DnsHeaderFlag.IsAuthenticData);
+                _flags &= (ushort)~(DnsHeaderFlag.FutureUse);
+                _flags &= (ushort)~(DnsHeaderFlag.HasQuery);
+                _flags &= (ushort)~(DnsHeaderFlag.HasAuthorityAnswer);
+                _flags &= (ushort)~(DnsHeaderFlag.ResultTruncated);
+                _flags &= (ushort)~(DnsHeaderFlag.RecursionDesired);
+                _flags &= (ushort)~(DnsHeaderFlag.RecursionAvailable);
+                _flags |= (ushort)value;
+            }
+        }
+
+        public int Id { get; set; }
+
+        public DnsOpCode OpCode
+        {
+            get
+            {
+                return (DnsOpCode)((DnsHeader.OPCODE_MASK & _flags) >> DnsHeader.OPCODE_SHIFT);
+            }
+            set
+            {
+                _flags &= (ushort)~(DnsHeader.OPCODE_MASK);
+                _flags |= (ushort)(((ushort)value << DnsHeader.OPCODE_SHIFT) & DnsHeader.OPCODE_MASK);
+            }
+        }
+
+        public int QuestionCount { get; set; }
+
+        public bool UseRecursion
+        {
+            get { return (HeaderFlags | DnsHeaderFlag.RecursionDesired) != 0; }
+            set
+            {
+                HeaderFlags |= DnsHeaderFlag.RecursionDesired;
+            }
+        }
+
+        public DnsRequestHeader(int id, int questionCount, DnsOpCode queryKind)
+            : this(id, questionCount, true, queryKind)
+        {
+        }
+
+        public DnsRequestHeader(int id, int questionCount, bool useRecursion, DnsOpCode queryKind)
+        {
+            Id = id;
+            QuestionCount = questionCount;
+            OpCode = queryKind;
+            UseRecursion = useRecursion;
+        }
+
+        public override string ToString()
+        {
+            return $"{Id} - Qs: {QuestionCount} Recursion: {UseRecursion} OpCode: {OpCode}";
+        }
+    }
+}