mirror of
https://github.com/fergalmoran/DnsServer.git
synced 2025-12-27 11:59:39 +00:00
73 lines
1.7 KiB
C#
73 lines
1.7 KiB
C#
/*
|
|
Technitium DNS Server
|
|
Copyright (C) 2019 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.Net;
|
|
using TechnitiumLibrary.IO;
|
|
|
|
namespace DnsServerCore.Dhcp.Options
|
|
{
|
|
class SubnetMaskOption : DhcpOption
|
|
{
|
|
#region variables
|
|
|
|
IPAddress _subnetMask;
|
|
|
|
#endregion
|
|
|
|
#region constructor
|
|
|
|
public SubnetMaskOption(IPAddress subnetMask)
|
|
: base(DhcpOptionCode.SubnetMask)
|
|
{
|
|
_subnetMask = subnetMask;
|
|
}
|
|
|
|
public SubnetMaskOption(Stream s)
|
|
: base(DhcpOptionCode.SubnetMask, s)
|
|
{ }
|
|
|
|
#endregion
|
|
|
|
#region protected
|
|
|
|
protected override void ParseOptionValue(Stream s)
|
|
{
|
|
if (s.Length != 4)
|
|
throw new InvalidDataException();
|
|
|
|
_subnetMask = new IPAddress(s.ReadBytes(4));
|
|
}
|
|
|
|
protected override void WriteOptionValue(Stream s)
|
|
{
|
|
s.Write(_subnetMask.GetAddressBytes());
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region properties
|
|
|
|
public IPAddress SubnetMask
|
|
{ get { return _subnetMask; } }
|
|
|
|
#endregion
|
|
}
|
|
}
|