161 lines
6.4 KiB
C#
161 lines
6.4 KiB
C#
/**********************************************************************
|
|
* Copyright (c) 2010, j. montgomery *
|
|
* All rights reserved. *
|
|
* *
|
|
* Redistribution and use in source and binary forms, with or without *
|
|
* modification, are permitted provided that the following conditions *
|
|
* are met: *
|
|
* *
|
|
* + Redistributions of source code must retain the above copyright *
|
|
* notice, this list of conditions and the following disclaimer. *
|
|
* *
|
|
* + Redistributions in binary form must reproduce the above copyright*
|
|
* notice, this list of conditions and the following disclaimer *
|
|
* in the documentation and/or other materials provided with the *
|
|
* distribution. *
|
|
* *
|
|
* + Neither the name of j. montgomery's employer nor the names of *
|
|
* its contributors may be used to endorse or promote products *
|
|
* derived from this software without specific prior written *
|
|
* permission. *
|
|
* *
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS*
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT *
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS *
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE *
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,*
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES *
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR *
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) *
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,*
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) *
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED*
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE. *
|
|
**********************************************************************/
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Text;
|
|
using System.IO;
|
|
using System.Net;
|
|
|
|
namespace DnDns.Records
|
|
{
|
|
public sealed class SoaRecord : DnsRecordBase
|
|
{
|
|
// For SOA
|
|
#region fields
|
|
private string _primaryNameServer;
|
|
private string _responsiblePerson;
|
|
private uint _serial;
|
|
private uint _refreshInterval;
|
|
private uint _retryInterval;
|
|
private uint _expirationLimit;
|
|
// RFC 1034: TTL - only positive values of a signed 32 bit number.
|
|
private int _minimumTimeToLive;
|
|
#endregion
|
|
|
|
#region properties
|
|
public string PrimaryNameServer
|
|
{
|
|
get { return _primaryNameServer; }
|
|
}
|
|
|
|
public string ResponsiblePerson
|
|
{
|
|
get { return _responsiblePerson; }
|
|
}
|
|
|
|
public uint Serial
|
|
{
|
|
get { return _serial; }
|
|
}
|
|
|
|
public uint RefreshInterval
|
|
{
|
|
get { return _refreshInterval; }
|
|
}
|
|
|
|
public uint RetryInterval
|
|
{
|
|
get { return _retryInterval; }
|
|
}
|
|
|
|
public uint ExpirationLimit
|
|
{
|
|
get { return _expirationLimit; }
|
|
}
|
|
|
|
public int MinimumTimeToLive
|
|
{
|
|
get { return _minimumTimeToLive; }
|
|
}
|
|
#endregion
|
|
|
|
internal SoaRecord(RecordHeader dnsHeader) : base(dnsHeader) { }
|
|
|
|
public override void ParseRecord(ref MemoryStream ms)
|
|
{
|
|
StringBuilder sb = new StringBuilder();
|
|
// Parse Name
|
|
_primaryNameServer = DnsRecordBase.ParseName(ref ms);
|
|
sb.Append("Primary NameServer: ");
|
|
sb.Append(_primaryNameServer);
|
|
sb.Append("\r\n");
|
|
|
|
// Parse Responsible Persons Mailbox (Parse Name)
|
|
_responsiblePerson = DnsRecordBase.ParseName(ref ms);
|
|
sb.Append("Responsible Person: ");
|
|
sb.Append(_responsiblePerson);
|
|
sb.Append("\r\n");
|
|
|
|
byte[] serial = new Byte[4];
|
|
byte[] refreshInterval = new Byte[4];
|
|
byte[] retryInterval = new Byte[4];
|
|
byte[] expirationLimit = new Byte[4];
|
|
byte[] minTTL = new Byte[4];
|
|
|
|
// Parse Serial (4 bytes)
|
|
ms.Read(serial, 0, 4);
|
|
//_serial = Tools.ByteToUInt(serial);
|
|
_serial = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt32(serial, 0));
|
|
sb.Append("Serial: ");
|
|
sb.Append(_serial);
|
|
sb.Append("\r\n");
|
|
|
|
// Parse Refresh Interval (4 bytes)
|
|
ms.Read(refreshInterval, 0, 4);
|
|
// _refreshInterval = Tools.ByteToUInt(refreshInterval);
|
|
_refreshInterval = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt32(refreshInterval, 0));
|
|
sb.Append("Refresh Interval: ");
|
|
sb.Append(_refreshInterval);
|
|
sb.Append("\r\n");
|
|
|
|
// Parse Retry Interval (4 bytes)
|
|
ms.Read(retryInterval, 0, 4);
|
|
//_retryInterval = Tools.ByteToUInt(retryInterval);
|
|
_retryInterval = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt32(retryInterval, 0));
|
|
sb.Append("Retry Interval: ");
|
|
sb.Append(_retryInterval);
|
|
sb.Append("\r\n");
|
|
|
|
// Parse Expiration limit (4 bytes)
|
|
ms.Read(expirationLimit, 0, 4);
|
|
// _expirationLimit = Tools.ByteToUInt(expirationLimit);
|
|
_expirationLimit = (uint)IPAddress.NetworkToHostOrder(BitConverter.ToInt32(expirationLimit, 0));
|
|
sb.Append("Expire: ");
|
|
sb.Append(_expirationLimit);
|
|
sb.Append("\r\n");
|
|
|
|
// Parse Min TTL (4 bytes)
|
|
ms.Read(minTTL, 0, 4);
|
|
// _minTTL = Tools.ByteToUInt(minTTL);
|
|
_minimumTimeToLive = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(minTTL, 0));
|
|
sb.Append("TTL: ");
|
|
sb.Append(_minimumTimeToLive);
|
|
sb.Append("\r\n");
|
|
|
|
_answer = sb.ToString();
|
|
}
|
|
}
|
|
}
|