added VendorClassIdentifierOption

DnsServerCore/Dhcp/Options/VendorClassIdentifierOption.cs

@@ -0,0 +1,69 @@
+/*
+Technitium DNS Server
+Copyright (C) 2020  Shreyas Zare (shreyas@technitium.com)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+using System.IO;
+using System.Text;
+using TechnitiumLibrary.IO;
+
+namespace DnsServerCore.Dhcp.Options
+{
+    class VendorClassIdentifierOption : DhcpOption
+    {
+        #region variables
+
+        string _identifier;
+
+        #endregion
+
+        #region constructor
+
+        public VendorClassIdentifierOption(string identifier)
+            : base(DhcpOptionCode.VendorClassIdentifier)
+        {
+            _identifier = identifier;
+        }
+
+        public VendorClassIdentifierOption(Stream s)
+            : base(DhcpOptionCode.VendorClassIdentifier, s)
+        { }
+
+        #endregion
+
+        #region protected
+
+        protected override void ParseOptionValue(Stream s)
+        {
+            _identifier = Encoding.ASCII.GetString(s.ReadBytes((int)s.Length));
+        }
+
+        protected override void WriteOptionValue(Stream s)
+        {
+            s.Write(Encoding.ASCII.GetBytes(_identifier));
+        }
+
+        #endregion
+
+        #region properties
+
+        public string Identifier
+        { get { return _identifier; } }
+
+        #endregion
+    }
+}