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using System;
using System.Collections;
using System.Collections.Generic;
namespace LumiSoft.Net.Dns.Client
{
/// <summary>
/// This class represents dns server response.
/// </summary>
[Serializable]
public class DnsServerResponse
{
private bool m_Success = true;
private RCODE m_RCODE = RCODE.NO_ERROR;
private List<DNS_rr_base> m_pAnswers = null;
private List<DNS_rr_base> m_pAuthoritiveAnswers = null;
private List<DNS_rr_base> m_pAdditionalAnswers = null;
internal DnsServerResponse(bool connectionOk,RCODE rcode,List<DNS_rr_base> answers,List<DNS_rr_base> authoritiveAnswers,List<DNS_rr_base> additionalAnswers)
{
m_Success = connectionOk;
m_RCODE = rcode;
m_pAnswers = answers;
m_pAuthoritiveAnswers = authoritiveAnswers;
m_pAdditionalAnswers = additionalAnswers;
}
#region method GetARecords
/// <summary>
/// Gets IPv4 host addess records.
/// </summary>
/// <returns></returns>
public DNS_rr_A[] GetARecords()
{
List<DNS_rr_A> retVal = new List<DNS_rr_A>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.A){
retVal.Add((DNS_rr_A)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetNSRecords
/// <summary>
/// Gets name server records.
/// </summary>
/// <returns></returns>
public DNS_rr_NS[] GetNSRecords()
{
List<DNS_rr_NS> retVal = new List<DNS_rr_NS>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.NS){
retVal.Add((DNS_rr_NS)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetCNAMERecords
/// <summary>
/// Gets CNAME records.
/// </summary>
/// <returns></returns>
public DNS_rr_CNAME[] GetCNAMERecords()
{
List<DNS_rr_CNAME> retVal = new List<DNS_rr_CNAME>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.CNAME){
retVal.Add((DNS_rr_CNAME)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetSOARecords
/// <summary>
/// Gets SOA records.
/// </summary>
/// <returns></returns>
public DNS_rr_SOA[] GetSOARecords()
{
List<DNS_rr_SOA> retVal = new List<DNS_rr_SOA>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.SOA){
retVal.Add((DNS_rr_SOA)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetPTRRecords
/// <summary>
/// Gets PTR records.
/// </summary>
/// <returns></returns>
public DNS_rr_PTR[] GetPTRRecords()
{
List<DNS_rr_PTR> retVal = new List<DNS_rr_PTR>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.PTR){
retVal.Add((DNS_rr_PTR)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetHINFORecords
/// <summary>
/// Gets HINFO records.
/// </summary>
/// <returns></returns>
public DNS_rr_HINFO[] GetHINFORecords()
{
List<DNS_rr_HINFO> retVal = new List<DNS_rr_HINFO>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.HINFO){
retVal.Add((DNS_rr_HINFO)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetMXRecords
/// <summary>
/// Gets MX records.(MX records are sorted by preference, lower array element is prefered)
/// </summary>
/// <returns></returns>
public DNS_rr_MX[] GetMXRecords()
{
List<DNS_rr_MX> mx = new List<DNS_rr_MX>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.MX){
mx.Add((DNS_rr_MX)record);
}
}
// Sort MX records by preference.
DNS_rr_MX[] retVal = mx.ToArray();
Array.Sort(retVal);
return retVal;
}
#endregion
#region method GetTXTRecords
/// <summary>
/// Gets text records.
/// </summary>
/// <returns></returns>
public DNS_rr_TXT[] GetTXTRecords()
{
List<DNS_rr_TXT> retVal = new List<DNS_rr_TXT>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.TXT){
retVal.Add((DNS_rr_TXT)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetAAAARecords
/// <summary>
/// Gets IPv6 host addess records.
/// </summary>
/// <returns></returns>
public DNS_rr_A[] GetAAAARecords()
{
List<DNS_rr_A> retVal = new List<DNS_rr_A>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.AAAA){
retVal.Add((DNS_rr_A)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetSRVRecords
/// <summary>
/// Gets SRV resource records.
/// </summary>
/// <returns></returns>
public DNS_rr_SRV[] GetSRVRecords()
{
List<DNS_rr_SRV> retVal = new List<DNS_rr_SRV>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.SRV){
retVal.Add((DNS_rr_SRV)record);
}
}
return retVal.ToArray();
}
#endregion
#region method GetNAPTRRecords
/// <summary>
/// Gets NAPTR resource records.
/// </summary>
/// <returns></returns>
public DNS_rr_NAPTR[] GetNAPTRRecords()
{
List<DNS_rr_NAPTR> retVal = new List<DNS_rr_NAPTR>();
foreach(DNS_rr_base record in m_pAnswers){
if(record.RecordType == QTYPE.NAPTR){
retVal.Add((DNS_rr_NAPTR)record);
}
}
return retVal.ToArray();
}
#endregion
#region method FilterRecords
/// <summary>
/// Filters out specified type of records from answer.
/// </summary>
/// <param name="answers"></param>
/// <param name="type"></param>
/// <returns></returns>
private List<DNS_rr_base> FilterRecordsX(List<DNS_rr_base> answers,QTYPE type)
{
List<DNS_rr_base> retVal = new List<DNS_rr_base>();
foreach(DNS_rr_base record in answers){
if(record.RecordType == type){
retVal.Add(record);
}
}
return retVal;
}
#endregion
#region Properties Implementation
/// <summary>
/// Gets if connection to dns server was successful.
/// </summary>
public bool ConnectionOk
{
get{ return m_Success; }
}
/// <summary>
/// Gets dns server response code.
/// </summary>
public RCODE ResponseCode
{
get{ return m_RCODE; }
}
/// <summary>
/// Gets all resource records returned by server (answer records section + authority records section + additional records section).
/// NOTE: Before using this property ensure that ConnectionOk=true and ResponseCode=RCODE.NO_ERROR.
/// </summary>
public DNS_rr_base[] AllAnswers
{
get{
List<DNS_rr_base> retVal = new List<DNS_rr_base>();
retVal.AddRange(m_pAnswers.ToArray());
retVal.AddRange(m_pAuthoritiveAnswers.ToArray());
retVal.AddRange(m_pAdditionalAnswers.ToArray());
return retVal.ToArray();
}
}
/// <summary>
/// Gets dns server returned answers. NOTE: Before using this property ensure that ConnectionOk=true and ResponseCode=RCODE.NO_ERROR.
/// </summary>
/// <code>
/// // NOTE: DNS server may return diffrent record types even if you query MX.
/// // For example you query lumisoft.ee MX and server may response:
/// // 1) MX - mail.lumisoft.ee
/// // 2) A - lumisoft.ee
/// //
/// // Before casting to right record type, see what type record is !
///
///
/// foreach(DnsRecordBase record in Answers){
/// // MX record, cast it to MX_Record
/// if(record.RecordType == QTYPE.MX){
/// MX_Record mx = (MX_Record)record;
/// }
/// }
/// </code>
public DNS_rr_base[] Answers
{
get{ return m_pAnswers.ToArray(); }
}
/// <summary>
/// Gets name server resource records in the authority records section. NOTE: Before using this property ensure that ConnectionOk=true and ResponseCode=RCODE.NO_ERROR.
/// </summary>
public DNS_rr_base[] AuthoritiveAnswers
{
get{ return m_pAuthoritiveAnswers.ToArray(); }
}
/// <summary>
/// Gets resource records in the additional records section. NOTE: Before using this property ensure that ConnectionOk=true and ResponseCode=RCODE.NO_ERROR.
/// </summary>
public DNS_rr_base[] AdditionalAnswers
{
get{ return m_pAdditionalAnswers.ToArray(); }
}
#endregion
}
}
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