携帯キャリアのモバイルIPアドレスを取得するやーつ

GetCarrierIpAddress.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Xml.Linq;
using Sgml;

namespace SgmlReaderTest
{
	internal class Program
	{
		private static void Main(string[] args)
		{
			// http://neue.cc/2010/03/02_244.html
			var docomo = Docomo();
			var au = Au();
			var softbank = Softbank();
			var willcom = Willcom();
			var emobile = Emobile();
			Console.WriteLine("処理終了。");
		}

		private static XDocument GetSgml(string href)
		{
			using (var sgml = new SgmlReader {Href = href, IgnoreDtd = true})
			{
				return XDocument.Load(sgml);
			}
		}

		private static IEnumerable<string> Docomo()
		{
			var xml = GetSgml("https://www.nttdocomo.co.jp/service/developer/make/content/ip/index.html");
			var ns = xml.Root.Name.Namespace;
			return xml.Descendants(ns + "ul")
				.Where(e => e.Attribute("class") != null && e.Attribute("class").Value == "normal txt")
				.SelectMany(e => e.Descendants(ns + "li"))
				.Select(e => e.Value)
				.Distinct();
		}

		private static IEnumerable<string> Au()
		{
			var xml = GetSgml("http://www.au.kddi.com/ezfactory/tec/spec/ezsava_ip.html");
			var ns = xml.Root.Name.Namespace;
			var all = xml.Descendants(ns + "tr")
				.Where(e => e.Attribute("bgcolor") != null && e.Attribute("bgcolor").Value == "#ffffff")
				.SelectMany(e => e.Descendants(ns + "td"));

			var ipAddress = all
				.Where(e => Regex.IsMatch(e.Value, @"(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})"))
				.Select((e, idx) => new {Idx = idx, e.Value});
			var subnet = all
				.Where(e => e.Value.StartsWith("/"))
				.Select((e, idx) => new {Idx = idx, e.Value});
			return ipAddress.Join(subnet, x => x.Idx, y => y.Idx, (x, y) => x.Value + y.Value);
		}

		private static IEnumerable<string> Softbank()
		{
			var xml = GetSgml("http://creation.mb.softbank.jp/mc/tech/tech_web/web_ipaddress.html");
			var ns = xml.Root.Name.Namespace;
			return xml.Descendants(ns + "table")
				.Where(e => e.Attribute("class") != null && e.Attribute("class").Value == "onece_table")
				.SelectMany(e => e.Descendants(ns + "th"))
				.Select(e => e.Value)
				.Distinct();
		}

		private static IEnumerable<string> Willcom()
		{
			var xml = GetSgml("http://www.willcom-inc.com/ja/service/contents_service/create/center_info/index.html");
			var ns = xml.Root.Name.Namespace;
			return xml.Descendants(ns + "table")
				.Where(e => e.Attribute("class") != null && e.Attribute("class").Value == "plan03")
				.SelectMany(e => e.Descendants(ns + "td"))
				.Where(e => Regex.IsMatch(e.Value, @"^[0-9].*"))
				.Select(e => e.Value)
				.Distinct();
		}

		private static IEnumerable<string> Emobile()
		{
			var xml = GetSgml("http://developer.emnet.ne.jp/ipaddress.html");
			var ns = xml.Root.Name.Namespace;
			return xml.Descendants(ns + "table")
				.SelectMany(e => e.Descendants(ns + "td"))
				.Where(e => Regex.IsMatch(e.Value, @"^[0-9].*"))
				.Select(e => e.Value)
				.Distinct();
		}
	}
}