static async Task FqdnScanAsync(ConsoleService c, string cmdName, string str)
{
ConsoleParam[] args =
{
new ConsoleParam("[subnets]", ConsoleService.Prompt, "Subnets: ", ConsoleService.EvalNotEmpty, null),
new ConsoleParam("servers"),
new ConsoleParam("threads"),
new ConsoleParam("interval"),
new ConsoleParam("try"),
new ConsoleParam("shuffle"),
new ConsoleParam("fqdnorder"),
new ConsoleParam("dest"),
new ConsoleParam("ports"),
};
ConsoleParamValueList vl = c.ParseCommandList(cmdName, str, args);
string subnets = vl.DefaultParam.StrValue;
string servers = vl["servers"].StrValue;
int threads = vl["threads"].IntValue;
int interval = vl["interval"].IntValue;
int numtry = vl["try"].IntValue;
bool shuffle = vl["shuffle"].StrValue._ToBool(true);
bool fqdnorder = vl["fqdnorder"].StrValue._ToBool(true);
string csv = vl["dest"].StrValue;
string portsStr = vl["ports"].StrValue;
PortRange portRange = new PortRange(portsStr);
var serversList = servers._Split(StringSplitOptions.RemoveEmptyEntries, " ", " ", ",", "|");
if (serversList._IsEmpty())
{
serversList = new string[] { "8.8.8.8", "8.8.4.4", "1.1.1.1", "3.3.3.3" };
}
List <IPEndPoint> endPointsList = new List <IPEndPoint>();
serversList._DoForEach(x => endPointsList.Add(new IPEndPoint(x._ToIPAddress() !, 53)));
using DnsHostNameScanner scan = new DnsHostNameScanner(
settings: new DnsHostNameScannerSettings { Interval = interval, NumThreads = threads, NumTry = numtry, PrintStat = true, RandomInterval = true, Shuffle = shuffle, PrintOrderByFqdn = fqdnorder, TcpPorts = portRange.ToArray(), },
dnsSettings: new DnsResolverSettings(dnsServersList: endPointsList, flags: DnsResolverFlags.UdpOnly | DnsResolverFlags.RoundRobinServers));
var list = await scan.PerformAsync(subnets);
if (csv._IsFilled())
{
using var csvWriter = Lfs.WriteCsv <FqdnScanResult>(csv, false, true, writeBom: false, flags: FileFlags.AutoCreateDirectory);
foreach (var item in list)
{
if (item.HostnameList._IsFilled())
{
FqdnScanResult r = new FqdnScanResult();
r.IpSortKey = IPAddr.FromAddress(item.Ip).GetZeroPaddingFullString();
r.Ip = item.Ip.ToString();
r.FqdnSortKey = Str.ReverseFqdnStr(item.HostnameList.First()).ToLowerInvariant();
r.FqdnList = item.HostnameList._Combine(" / ");
r.TcpPortList = item.TcpPorts.Select(x => x.ToString())._Combine(" / ");
csvWriter.WriteData(r);
}
}
}
}
