mirror of https://github.com/Radarr/Radarr
100 lines
3.3 KiB
C#
100 lines
3.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace MonoTorrent
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{
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public class MagnetLink
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{
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public RawTrackerTier AnnounceUrls
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{
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get; private set;
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}
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public InfoHash InfoHash
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{
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get; private set;
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}
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public string Name
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{
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get; private set;
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}
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public List<string> Webseeds
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{
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get; private set;
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}
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public MagnetLink(string url)
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{
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Check.Url(url);
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AnnounceUrls = new RawTrackerTier();
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Webseeds = new List<string>();
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ParseMagnetLink(url);
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}
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void ParseMagnetLink(string url)
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{
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string[] splitStr = url.Split('?');
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if (splitStr.Length == 0 || splitStr[0] != "magnet:")
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throw new FormatException("The magnet link must start with 'magnet:?'.");
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if (splitStr.Length == 1)
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return;//no parametter
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string[] parameters = splitStr[1].Split('&', ';');
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for (int i = 0; i < parameters.Length; i++)
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{
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string[] keyval = parameters[i].Split('=');
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if (keyval.Length != 2)
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throw new FormatException("A field-value pair of the magnet link contain more than one equal'.");
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switch (keyval[0].Substring(0, 2))
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{
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case "xt"://exact topic
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if (InfoHash != null)
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throw new FormatException("More than one infohash in magnet link is not allowed.");
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string val = keyval[1].Substring(9);
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switch (keyval[1].Substring(0, 9))
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{
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case "urn:sha1:"://base32 hash
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case "urn:btih:":
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if (val.Length == 32)
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InfoHash = InfoHash.FromBase32(val);
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else if (val.Length == 40)
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InfoHash = InfoHash.FromHex(val);
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else
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throw new FormatException("Infohash must be base32 or hex encoded.");
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break;
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}
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break;
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case "tr"://address tracker
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var bytes = UriHelper.UrlDecode(keyval[1]);
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AnnounceUrls.Add(Encoding.UTF8.GetString(bytes));
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break;
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case "as"://Acceptable Source
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Webseeds.Add(keyval[1]);
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break;
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case "dn"://display name
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var name = UriHelper.UrlDecode(keyval[1]);
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Name = Encoding.UTF8.GetString(name);
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break;
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case "xl"://exact length
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case "xs":// eXact Source - P2P link.
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case "kt"://keyword topic
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case "mt"://manifest topic
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//not supported for moment
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break;
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default:
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//not supported
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break;
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}
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}
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}
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}
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}
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