private Host(HostFormat format, string domainName, IPAddress ipAddress = null, int?maskBits = null)
{
Format = format;
DomainName = domainName;
IpAddress = ipAddress;
MaskBits = maskBits;
}
public static bool IsHostFormat(string url,HostFormat format)
{
if (!IsHostFormat(url))
{
return false;
}
if (url.ToLower().EndsWith("."+format.ToString().Replace('_','.')))
{
return true;
}
return false;
}
public static bool TryParse(string value, HostFormat validFormats, out Host host)
{
host = null;
HostFormat format;
string domainName;
string ipAddress;
int? maskBits;
Match match = _cidrRegex.Match(value);
IPAddress parsedIpAddress;
if (match.Success)
{
ipAddress = match.Groups["IpAddress"].Value;
maskBits = int.Parse(match.Groups["Cidr"].Value);
}
else
{
ipAddress = value;
maskBits = null;
}
if (IPAddress.TryParse(ipAddress, out parsedIpAddress))
{
switch (parsedIpAddress.AddressFamily)
{
case AddressFamily.InterNetwork:
if (maskBits == null && !validFormats.HasFlag(HostFormat.IPv4) || maskBits != null && (!validFormats.HasFlag(HostFormat.IPv4Cidr) || maskBits > 32))
{
return(false);
}
format = maskBits != null ? HostFormat.IPv4Cidr : HostFormat.IPv4;
break;
case AddressFamily.InterNetworkV6:
if (maskBits == null && !validFormats.HasFlag(HostFormat.IPv6) || maskBits != null && (!validFormats.HasFlag(HostFormat.IPv6Cidr) || maskBits > 128))
{
return(false);
}
format = maskBits != null ? HostFormat.IPv6Cidr : HostFormat.IPv6;
break;
default:
throw new ArgumentException($"Unexpected address family '{parsedIpAddress.AddressFamily}'.");
}
domainName = null;
}
else
{
format = value.StartsWith(".", StringComparison.OrdinalIgnoreCase) ? HostFormat.DomainNameSuffix : HostFormat.DomainName;
if (!validFormats.HasFlag(format))
{
return(false);
}
domainName = value;
}
host = new Host(format, domainName, parsedIpAddress, maskBits);
return(true);
}
