/// <summary>
/// validate domain by nslookup
/// </summary>
/// <param name="dns"></param>
/// <param name="fileName"></param>
/// <param name="invalidDomains"></param>
public static void ValidateDomains(IPAddress dns, string fileName, string invalidDomains = "invalid_domains.txt")
{
if (dns == null)
{
dns = IPAddress.Parse("8.8.8.8");
}
if (string.IsNullOrEmpty(invalidDomains))
{
invalidDomains = "invalid_domains.txt";
}
ChinaList cl = new ChinaList(fileName);
List <string> domains = cl.GetDomains();
//List<string> urls = cl.ParseURLs();
StringBuilder results = new StringBuilder();
//StringBuilder fullResult = new StringBuilder();
List <string> whiteList = new List <string>();
whiteList.Add("ns1.dnsv2.com");
Parallel.ForEach(domains, domain =>
{
Console.WriteLine("Querying DNS records for domain: {0}", domain);
QueryResult queryResult = DNSQuery(dns, domain);
Console.Write(queryResult.ToString());
//fullResult.Append(queryResult.ToString());
bool ret = false;
if (queryResult.NSCount < 1)
{
results.Append(queryResult.ToString());
return;
}
foreach (var ns in queryResult.NSList)
{
var t = ns;
if (ns.Contains("="))
{
t = ParseNameServer(ns);
}
try
{
IPHostEntry ip = Dns.GetHostEntry(t);
QueryResult temp = DNSQuery(ip.AddressList[0], domain);
if (temp.NSCount > 0 || whiteList.Contains(t))
{
ret = true;
break;
}
else
{
queryResult.Error += string.Format("\n[V]: ns->{0}, Count->{1}", t, temp.NSCount);
}
}
catch (Exception ex)
{
queryResult.Error += string.Format("\n[V]: ns->{0}, Error->{1}", t, ex.Message);
Console.WriteLine("Validate domain: {0}, ns: {1} Error: {2}", domain, t, ex.Message);
}
}
if (!ret)
{
queryResult.Error += "\n[V]: validate domian fail.";
results.Append(queryResult.ToString());
}
});
Save(invalidDomains, results.ToString());
}
/// <summary>
/// validate domain by nslookup
/// </summary>
/// <param name="dns"></param>
/// <param name="fileName"></param>
/// <param name="invalidDomains"></param>
public static void ValidateDomains(IPAddress dns, string fileName, string invalidDomains = "invalid_domains.txt")
{
if (dns == null)
dns = IPAddress.Parse("8.8.8.8");
if (string.IsNullOrEmpty(invalidDomains))
invalidDomains = "invalid_domains.txt";
ChinaList cl = new ChinaList(fileName);
List<string> domains = cl.GetDomains();
//List<string> urls = cl.ParseURLs();
StringBuilder results = new StringBuilder();
//StringBuilder fullResult = new StringBuilder();
List<string> whiteList = new List<string>();
whiteList.Add("ns1.dnsv2.com");
Parallel.ForEach(domains, domain =>
{
Console.WriteLine("Querying DNS records for domain: {0}", domain);
QueryResult queryResult = DNSQuery(dns, domain);
Console.Write(queryResult.ToString());
//fullResult.Append(queryResult.ToString());
bool ret = false;
if (queryResult.NSCount < 1)
{
results.Append(queryResult.ToString());
return;
}
foreach (var ns in queryResult.NSList)
{
var t = ns;
if (ns.Contains("="))
t = ParseNameServer(ns);
try
{
IPHostEntry ip = Dns.GetHostEntry(t);
QueryResult temp = DNSQuery(ip.AddressList[0], domain);
if (temp.NSCount > 0 || whiteList.Contains(t))
{
ret = true;
break;
}
else
{
queryResult.Error += string.Format("\n[V]: ns->{0}, Count->{1}", t, temp.NSCount);
}
}
catch (Exception ex)
{
queryResult.Error += string.Format("\n[V]: ns->{0}, Error->{1}", t, ex.Message);
Console.WriteLine("Validate domain: {0}, ns: {1} Error: {2}", domain, t, ex.Message);
}
}
if (!ret)
{
queryResult.Error += "\n[V]: validate domian fail.";
results.Append(queryResult.ToString());
}
});
Save(invalidDomains, results.ToString());
}
