Exemple #1
0
 public static InfoHash UrlDecode(string infoHash)
 {
     Check.InfoHash(infoHash);
     return(new InfoHash(UriHelper.UrlDecode(infoHash)));
 }
Exemple #2
0
 public string UrlEncode()
 {
     return(UriHelper.UrlEncode(Hash).Replace("+", "%20"));
 }
        void ParseMagnetLink(string url)
        {
            string[] splitStr = url.Split('?');
            if (splitStr.Length == 0 || splitStr[0] != "magnet:")
            {
                throw new FormatException("The magnet link must start with 'magnet:?'.");
            }

            if (splitStr.Length == 1)
            {
                return;//no parametter
            }
            string[] parameters = splitStr[1].Split('&', ';');

            for (int i = 0; i < parameters.Length; i++)
            {
                string[] keyval = parameters[i].Split('=');
                if (keyval.Length != 2)
                {
                    throw new FormatException("A field-value pair of the magnet link contain more than one equal'.");
                }
                switch (keyval[0].Substring(0, 2))
                {
                case "xt":    //exact topic
                    if (InfoHash != null)
                    {
                        throw new FormatException("More than one infohash in magnet link is not allowed.");
                    }

                    string val = keyval[1].Substring(9);
                    switch (keyval[1].Substring(0, 9))
                    {
                    case "urn:sha1:":        //base32 hash
                    case "urn:btih:":
                        if (val.Length == 32)
                        {
                            InfoHash = InfoHash.FromBase32(val);
                        }
                        else if (val.Length == 40)
                        {
                            InfoHash = InfoHash.FromHex(val);
                        }
                        else
                        {
                            throw new FormatException("Infohash must be base32 or hex encoded.");
                        }
                        break;
                    }
                    break;

                case "tr":     //address tracker
                    var bytes = UriHelper.UrlDecode(keyval[1]);
                    AnnounceUrls.Add(Encoding.UTF8.GetString(bytes));
                    break;

                case "ws":    //webseed
                case "as":    //acceptable source
                    Webseeds.Add(keyval[1]);
                    break;

                case "dn":    //display name
                    var name = UriHelper.UrlDecode(keyval[1]);
                    Name = Encoding.UTF8.GetString(name);
                    break;

                case "xl":    //exact length
                case "xs":    // eXact Source - P2P link.
                case "kt":    //keyword topic
                case "mt":    //manifest topic
                    //not supported for moment
                    break;

                default:
                    //not supported
                    break;
                }
            }
        }