private static ToxNameService FindNameServiceFromStore(ToxNameService[] services, string suffix)
{
return services.FirstOrDefault(s => s.Domain == suffix);
}
public static string DiscoverToxID(string domain, ToxNameService[] services, bool localStoreOnly, bool tox3Only)
{
ToxNameService service = null;
try
{
if (!localStoreOnly)
{
service = FindNameServiceFromStore(services, domain.Split('@')[1]) ?? FindNameService(domain.Split('@')[1]);
}
else
{
service = FindNameServiceFromStore(services, domain.Split('@')[1]);
}
}
catch { }
if (service == null && !tox3Only)
{
//this name service does not use tox3, how unencrypted of them
domain = domain.Replace("@", "._tox.");
string[] records = GetSPFRecords(domain);
foreach (string record in records)
{
if (record.Contains("v=tox1"))
{
string[] entries = record.Split(';');
foreach (string entry in entries)
{
string[] parts = entry.Split('=');
string name = parts[0];
string value = parts[1];
if (name == "id")
{
return(value);
}
}
}
}
}
else if (service != null)
{
string public_key;
if (!string.IsNullOrWhiteSpace(service.PublicKey))
{
public_key = service.PublicKey;
}
else
{
return(null);
}
string[] split = domain.Split('@');
ToxDns tox_dns = new ToxDns(new ToxKey(ToxKeyType.Public, public_key));
int request_id;
string dns3_string = tox_dns.GenerateDns3String(split[0], out request_id);
string query = string.Format("_{0}._tox.{1}", dns3_string, split[1]);
string[] records = GetSPFRecords(query);
foreach (string record in records)
{
if (record.Contains("v=tox3"))
{
string[] entries = record.Split(';');
foreach (string entry in entries)
{
string[] parts = entry.Split('=');
string name = parts[0];
string value = parts[1];
if (name == "id")
{
string result = tox_dns.DecryptDns3TXT(value, request_id);
tox_dns.Dispose();
return(result);
}
}
}
}
tox_dns.Dispose();
}
return(null);
}