New: Implemented Torrent Download Clients: uTorrent, Transmission and Deluge. And several public and private Torrent Indexers.

2026-04-27 22:56:45 -04:00 · 2014-05-13 19:57:46 +02:00
parent ffa814f387
commit 67cd5703a1
134 changed files with 11018 additions and 99 deletions
@@ -0,0 +1,95 @@
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace MonoTorrent
+{
+    public class MagnetLink
+    {
+        public RawTrackerTier AnnounceUrls {
+            get; private set;
+        }
+
+        public InfoHash InfoHash {
+            get; private set;
+        }
+
+        public string Name {
+            get; private set;
+        }
+
+        public List<string> Webseeds {
+            get; private set;
+        }
+
+        public MagnetLink (string url)
+        {
+            Check.Url (url);
+            AnnounceUrls = new RawTrackerTier ();
+            Webseeds  = new List<string> ();
+
+            ParseMagnetLink (url);
+        }
+
+        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 "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;
+                }
+            }
+        }
+    }
+}