Hosts Controller API

    /* # Hosts Controller [API]
     * By Kyl3   - http://pastebin.com/u/Kyl3
     * #         - http://hack4you.net/
     * #         - (c) 2012
     */


    class ClBlock
    {
        public static void HBlock(string URL)
        {
            if (URL.Contains("http://") || URL.Contains("https://")) URL = URL.Split(new string[] { "//" }, StringSplitOptions.None)[1];
            if (!URL.Contains("www")) URL = "www." + URL;

            string path = @"C:\Windows\System32\drivers\etc\hosts";
            TextWriter HWrite = File.AppendText(path);
            HWrite.WriteLine("\r\n0.0.0.0 " + URL + "\r\n0.0.0.0 " + URL.Replace("www.", ""));
            HWrite.Close();
        }

        public static void HUnBlock(string URL)
        {
            if (URL.Contains("http://") || URL.Contains("https://")) URL = URL.Split(new string[] { "//" }, StringSplitOptions.None)[1];
            if (!URL.Contains("www")) URL = "www." + URL;

            string path = @"C:\Windows\System32\drivers\etc\hosts";
            string[] site = URL.Split(new char[] { '.' });
            string[] domain = URL.Split(new char[] { '.' });
            site = site[1].Split(new char[] { '.' });
            domain = domain[2].Split(new char[] { '.' });
            StringBuilder newFile = new StringBuilder();
            string[] temp = { "", "" };
            string[] file = File.ReadAllLines(path);
            int i = 0;
            foreach (string line in file)
            {
                if (line.Contains(site[0]))
                {
                    if (i == 0)
                    {
                        temp[1] = line.Replace("0.0.0.0 www." + site[0] + "." + domain[0], "");
                        newFile.Append(temp[1] + "\r\n");
                        i++;
                        continue;
                    }
                    if (i == 1)
                    {
                        temp[0] = line.Replace("0.0.0.0 " + site[0] + "." + domain[0], "");
                        newFile.Append(temp[0] + "\r\n");
                        break;
                    }
                }
                else
                {
                    newFile.Append(line + "\r\n");
                }
            }
            File.WriteAllText(path, newFile.ToString());
        }

        public static void HUnBlockAll()
        {
            string path = @"C:\Windows\System32\drivers\etc\hosts";
            TextWriter HWrite = File.CreateText(path);
            HWrite.Write("");
            HWrite.Close();
        }
    }