public BroadcastEventArgs(Node sender, int ttl, string cmd, BDict message)
{
Sender = sender;
TTL = ttl;
Command = cmd;
Message = message;
}
public void BDictSetNullValue()
{
BDict dict = new BDict();
dict.Add("a", new BInt(0));
dict["a"] = null;
}
private void ProcessExtended(IPeerWireClient client, int commandLength, byte[] payload)
{
Int32 msgId = payload[0];
byte[] buffer = payload.GetBytes(1, commandLength - 1);
if (msgId == 0)
{
BDict extendedHandshake = (BDict)BencodingUtils.Decode(buffer);
BDict mDict = (BDict)extendedHandshake["m"];
foreach (KeyValuePair <string, IBencodingType> pair in mDict)
{
BInt i = (BInt)pair.Value;
this._extIncoming.Add(new ClientProtocolIDMap(client, pair.Key, (byte)i));
IBTExtension ext = this.FindIBTExtensionByProtocol(pair.Key);
if (ext != null)
{
ext.OnHandshake(client, buffer);
}
}
}
else
{
string protocol = this.FindIBTProtocolByMessageID(msgId);
IBTExtension ext = this.FindIBTExtensionByProtocol(protocol);
if (ext != null)
{
ext.OnExtendedMessage(client, buffer);
}
}
}
public void SendMessage(IPeerWireClient peerWireClient, IPEndPoint[] addedEndPoints, byte[] flags, IPEndPoint[] droppedEndPoints)
{
if (addedEndPoints == null && droppedEndPoints == null) return;
BDict d = new BDict();
if (addedEndPoints != null)
{
byte[] added = new byte[addedEndPoints.Length * 6];
for (int x = 0; x < addedEndPoints.Length; x++)
{
addedEndPoints[x].Address.GetAddressBytes().CopyTo(added, x * 6);
BitConverter.GetBytes((ushort)addedEndPoints[x].Port).CopyTo(added, (x * 6)+4);
}
d.Add("added", new BString { ByteValue = added });
}
if (droppedEndPoints != null)
{
byte[] dropped = new byte[droppedEndPoints.Length * 6];
for (int x = 0; x < droppedEndPoints.Length; x++)
{
droppedEndPoints[x].Address.GetAddressBytes().CopyTo(dropped, x * 6);
dropped.SetValue((ushort)droppedEndPoints[x].Port, (x * 6) + 2);
}
d.Add("dropped", new BString { ByteValue = dropped });
}
_parent.SendExtended(peerWireClient, _parent.GetOutgoingMessageID(peerWireClient, this), BencodingUtils.EncodeBytes(d));
}
private BDict ParseDict()
{
var dict = new BDict();
var largest = (BString)null;
do
{
var key = ParseString();
if (dict.Value.ContainsKey(key))
{
var msg = $"Key '{key}' is already present in the dictionary.";
throw new BParserException(msg);
}
if (dict.Value.Comparer.Compare(largest, key) > 0)
{
var msg = $"Key '{key}' is not lexicographically larger than preceding keys.";
throw new BParserException(msg);
}
largest = key;
dict.Value.Add(key, ParseAnyType());
}while (!IsAtEnd() && !Match(BLiteral.End));
return(dict);
}
public LocalRequest(ulong index, BDict request, TimeSpan time)
{
Response = new TaskCompletionSource <RemoteResponse>();
Index = index;
Request = request;
Time = time;
}
/// <summary>
/// Calculates the InfoHash from a torrent. You must supply the "info" dictionary from the torrent.
/// </summary>
/// <param name="torrentInfoDict">The "info" dictionary.</param>
/// <example>
/// This example, will load a torrent, take the "info" dictionary out of the root dictionary and hash this.
/// <code>
/// BDict torrent = BencodingUtils.DecodeFile(@"torrentFile.torrent") as BDict;
/// byte[] infoHash = BencodingUtils.CalculateTorrentInfoHash(torrent["info"] as BDict);
/// </code>
///
/// The "infoHash" byte array now contains 20 bytes with the SHA-1 infoHash.
/// </example>
/// <returns></returns>
public static byte[] CalculateTorrentInfoHash(BDict torrentInfoDict)
{
// Take the "info" dictionary provided, and encode it
byte[] infoBytes = EncodeBytes(torrentInfoDict);
// Hash the encoded dictionary
return new SHA1CryptoServiceProvider().ComputeHash(infoBytes);
}
public void BDictSetValue()
{
BDict dict = new BDict();
dict.Add("a", new BInt(0));
BInt newInt = new BInt(1);
dict["a"] = newInt;
Assert.AreEqual(newInt, dict["a"]);
}
public void DecodeDict_Empty()
{
const string testString = "de";
BDict testExpected = new BDict();
IBencodingType testResult = BencodingUtils.Decode(testString);
Assert.AreEqual(testExpected, testResult);
}
public void DecodeDict()
{
const string testString = "d1:a11:Hello Worlde";
BDict testExpected = new BDict();
testExpected.Add("a", new BString("Hello World"));
IBencodingType testResult = BencodingUtils.Decode(testString);
Assert.AreEqual(testExpected, testResult);
}
public void OnHandshake(IPeerWireClient peerWireClient, byte[] handshake)
{
BDict dict = (BDict)BencodingUtils.Decode(handshake);
if (dict.ContainsKey("metadata_size"))
{
BInt size = (BInt)dict["metadata_size"];
this._metadataSize = size;
this._pieceCount = (Int64)Math.Ceiling((double)this._metadataSize / 16384);
}
this.RequestMetaData(peerWireClient);
}
public void EncodeDictionary()
{
BDict testDict = new BDict();
BString testString = new BString("Hello World");
BInt testInt = new BInt(5);
testDict.Add("a", testString);
testDict.Add("b", testInt);
string test = BencodingUtils.EncodeString(testDict);
Assert.AreEqual("d1:a11:Hello World1:bi5ee", test);
}
public object VisitBDict(BDict node)
{
_bytes.Add((byte)BLiteral.StartDict);
foreach (var pair in node.Value)
{
pair.Key.Accept(this);
pair.Value.Accept(this);
}
_bytes.Add((byte)BLiteral.End);
return(null);
}
public LocalRequest NewRequest(BDict dict, CancellationToken cancellationToken = default)
{
LocalRequest result;
lock (requests) {
result = new LocalRequest(autoIndex++, dict, requestTimeout, cancellationToken);
requests.Add(result);
}
result.CancellationTokenSource.Token.Register(() => {
Pop(result.Index);
result.Response.TrySetCanceled(result.CancellationTokenSource.Token);
});
return(result);
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
BDict dict = (BDict)BencodingUtils.Decode(bytes);
if (dict.ContainsKey("added"))
{
var trackerList = (BList)dict["added"];
foreach (var tracker in trackerList)
{
TrackerAdded?.Invoke(peerWireClient, this, tracker.ToString());
}
}
}
public LocalRequest(ulong index, BDict request, TimeSpan timeout, CancellationToken cancellationToken)
{
Index = index;
DateTime = DateTime.Now;
Request = request;
if (cancellationToken.CanBeCanceled)
{
CancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(new CancellationTokenSource(timeout).Token, cancellationToken);
}
else
{
CancellationTokenSource = new CancellationTokenSource(timeout);
}
}
private async void HandleClient(Socket client)
{
try {
using var stream = new NetworkStream(client, ownsSocket: true)
{
ReadTimeout = 5000,
WriteTimeout = 5000,
};
BDict dict = (BDict)await Bencode.DecodeAsync(stream, this.client.NetworkPrefix);
await this.client.P2P.TcpServer_GetValue(stream, dict);
} catch {
}
}
public static Torrent ReadTorrent(string filename)
{
// Читаем файл торрента и берем необходимый словарь info
List <LostFile> files = new List <LostFile>();
BDict torrent = (BDict)BencodingUtils.DecodeFile(filename, Encoding.UTF8);
BDict fileInfo = (BDict)torrent["info"];
string name = ((BString)fileInfo["name"]).Value;
int pieceLength = (int)((BInt)fileInfo["piece length"]).Value;
// Перечитываем торрент еще раз, чтобы взять хеш в нужном виде
torrent = (BDict)BencodingUtils.DecodeFile(filename, Encoding.GetEncoding(437));
char[] pieces = ((BString)((BDict)torrent["info"])["pieces"]).Value.ToCharArray();
if (fileInfo.ContainsKey("files")) // Multifile torrent
{
BList filesData = (BList)fileInfo["files"];
long begin = 0;
foreach (BDict file in filesData)
{
BList filePaths = (BList)file["path"];
long length = ((BInt)file["length"]).Value;
string fullPath = name;
foreach (BString partOfPath in filePaths)
{
fullPath += @"\" + partOfPath.Value;
}
files.Add(new LostFile(fullPath, length, begin));
begin += length;
}
}
else // Singlefile torrent
{
long Length = ((BInt)fileInfo["length"]).Value;
files.Add(new LostFile(name, Length, 0));
}
return(new Torrent(name, files, pieceLength, pieces, filename));
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
BDict d = (BDict)BencodingUtils.Decode(bytes);
if (d.ContainsKey("added") && d.ContainsKey("added.f"))
{
BString pexList = (BString)d["added"];
BString pexFlags = (BString)d["added.f"];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
UInt32 ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
UInt16 port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
byte flags = pexFlags.ByteValue[i];
IPEndPoint ipAddr = new IPEndPoint(ip, port);
if (Added != null)
{
Added(peerWireClient, this, ipAddr, flags);
}
}
}
if (d.ContainsKey("dropped"))
{
BString pexList = (BString)d["dropped"];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
UInt32 ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
UInt16 port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
IPEndPoint ipAddr = new IPEndPoint(ip, port);
if (Dropped != null)
{
Dropped(peerWireClient, this, ipAddr);
}
}
}
}
static Torrent Parse(BDict dict)
{
var info = dict["info"] as BDict;
var torrent = new Torrent();
if(info.ContainsKey("files")) {
var files = info["files"] as BList;
torrent.Files.AddRange(files.Cast<BDict>().Select(f => new TorrentInfoFile {
Path = ((f["path"] as BList).First() as BString).Value,
Length = (f["length"] as BInt).Value
}));
} else {
torrent.Files.Add(new TorrentInfoFile {
Path = (info["name"] as BString).Value,
Length = (info["length"] as BInt).Value
});
}
return torrent;
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
BDict dictionary = (BDict)BencodingUtils.Decode(bytes);
if (!dictionary.ContainsKey(ADDED_KEY) && !dictionary.ContainsKey(ADDED_FLAGS_KEY) && !dictionary.ContainsKey(DROPPED_KEY))
{
return;
}
if (dictionary.ContainsKey(ADDED_KEY) && dictionary.ContainsKey(ADDED_FLAGS_KEY))
{
var pexList = (BString)dictionary[ADDED_KEY];
var pexFlags = (BString)dictionary[ADDED_FLAGS_KEY];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
var ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
var port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
var flags = pexFlags.ByteValue[i];
var ipAddr = new IPEndPoint(ip, port);
Added?.Invoke(peerWireClient, this, ipAddr, flags);
}
}
else //if (d.ContainsKey(DROPPED_KEY))
{
BString pexList = (BString)dictionary[DROPPED_KEY];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
var ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
var port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
var ipAddr = new IPEndPoint(ip, port);
Dropped?.Invoke(peerWireClient, this, ipAddr);
}
}
}
public void SendMessage(IPeerWireClient peerWireClient, IPEndPoint[] addedEndPoints, byte[] flags, IPEndPoint[] droppedEndPoints)
{
if (addedEndPoints == null && droppedEndPoints == null)
{
return;
}
BDict d = new BDict();
if (addedEndPoints != null)
{
byte[] added = new byte[addedEndPoints.Length * 6];
for (int x = 0; x < addedEndPoints.Length; x++)
{
addedEndPoints[x].Address.GetAddressBytes().CopyTo(added, x * 6);
BitConverter.GetBytes((ushort)addedEndPoints[x].Port).CopyTo(added, (x * 6) + 4);
}
d.Add("added", new BString {
ByteValue = added
});
}
if (droppedEndPoints != null)
{
byte[] dropped = new byte[droppedEndPoints.Length * 6];
for (int x = 0; x < droppedEndPoints.Length; x++)
{
droppedEndPoints[x].Address.GetAddressBytes().CopyTo(dropped, x * 6);
dropped.SetValue((ushort)droppedEndPoints[x].Port, (x * 6) + 2);
}
d.Add("dropped", new BString {
ByteValue = dropped
});
}
_parent.SendExtended(peerWireClient, _parent.GetOutgoingMessageID(peerWireClient, this), BencodingUtils.EncodeBytes(d));
}
public bool OnHandshake(IPeerWireClient client)
{
BDict handshakeDict = new BDict();
BDict mDict = new BDict();
byte i = 1;
foreach (IBTExtension extension in _protocolExtensions)
{
_extOutgoing.Add(new ClientProtocolIDMap(client, extension.Protocol, i));
mDict.Add(extension.Protocol, new BInt(i));
i++;
}
handshakeDict.Add("m", mDict);
String handshakeEncoded = BencodingUtils.EncodeString(handshakeDict);
byte[] handshakeBytes = Encoding.ASCII.GetBytes(handshakeEncoded);
Int32 length = 2 + handshakeBytes.Length;
client.SendBytes((new byte[0]).Cat(Pack.Int32(length, Pack.Endianness.Big).Cat(new[] { (byte)20 }).Cat(new[] { (byte)0 }).Cat(handshakeBytes)));
return true;
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
Int32 startAt = 0;
BencodingUtils.Decode(bytes, ref startAt);
this._piecesReceived += 1;
if (this._pieceCount >= this._piecesReceived)
{
this._metadataBuffer = this._metadataBuffer.Concat(bytes.Skip(startAt)).ToArray();
}
if (this._pieceCount == this._piecesReceived)
{
BDict metadata = (BDict)BencodingUtils.Decode(this._metadataBuffer);
if (MetaDataReceived != null)
{
MetaDataReceived(peerWireClient, this, metadata);
}
}
}
public void EqualityDict()
{
// Make initial dict
BDict testDict = new BDict();
BString testString = new BString("Hello World");
BInt testInt = new BInt(5);
testDict.Add("a", testString);
testDict.Add("b", testInt);
// Make test dict
BDict testDict2 = new BDict();
BString testString2 = new BString("Hello World");
BInt testInt2 = new BInt(5);
testDict2.Add("a", testString2);
testDict2.Add("b", testInt2);
// Test equality recursive
Assert.AreEqual(testDict, testDict2);
// Test null dict
BDict nullDict = null;
Assert.IsFalse(testDict.Equals(nullDict));
// Test different counts
testDict2.Add("c", new BInt(10));
Assert.IsFalse(testDict.Equals(testDict2));
// Test different values
testDict.Add("c", new BInt(9));
Assert.IsFalse(testDict.Equals(testDict2));
// Test missing keys
testDict2.Remove("c");
testDict2.Add("d", new BInt(9));
Assert.IsFalse(testDict.Equals(testDict2));
}
public float GetTorrentSize(string p)
{
long length = 0;
BDict torrentFile = null;
BList b;
try
{
torrentFile = BencodingUtils.DecodeFile(p) as BDict;
}
catch (Exception e)
{
Tool.MoveFile("decodeErr", p);
return(0);
}
if (torrentFile == null)
{
Tool.MoveFile("decodeErr", p);
return(0);
}
if ((torrentFile["info"] as BDict).ContainsKey("files"))
{
b = (BList)(torrentFile["info"] as BDict)["files"];
for (int i = 0; i < b.Count; i++)
{
BDict bd = (BDict)b[i];
length = length + ((BInt)bd["length"]).Value;
}
}
else
{
length = ((BInt)(torrentFile["info"] as BDict)["length"]).Value;
}
return(length / 1024 / 1024);
}
public bool OnHandshake(IPeerWireClient client)
{
var handshakeDict = new BDict();
var mDict = new BDict();
byte i = 1;
foreach (var extension in _protocolExtensions)
{
_extOutgoing.Add(new ClientProtocolIDMap(client, extension.Protocol, i));
mDict.Add(extension.Protocol, new BInt(i));
i++;
}
handshakeDict.Add("m", mDict);
var handshakeEncoded = BencodingUtils.EncodeString(handshakeDict);
var handshakeBytes = Encoding.ASCII.GetBytes(handshakeEncoded);
var length = 2 + handshakeBytes.Length;
client.SendBytes((new byte[0]).Cat(Pack.Int32(length, Pack.Endianness.Big).Cat(new[] { (byte)20 }).Cat(new[] { (byte)0 }).Cat(handshakeBytes)));
return(true);
}
public bool OnHandshake(IPeerWireClient client)
{
BDict handshakeDict = new BDict();
BDict mDict = new BDict();
byte i = 1;
foreach (IBTExtension extension in this._protocolExtensions)
{
this._extOutgoing.Add(new ClientProtocolIDMap(client, extension.Protocol, i));
mDict.Add(extension.Protocol, new BInt(i));
i++;
}
handshakeDict.Add("m", mDict);
string handshakeEncoded = BencodingUtils.EncodeString(handshakeDict);
byte[] handshakeBytes = Encoding.ASCII.GetBytes(handshakeEncoded);
Int32 length = 2 + handshakeBytes.Length;
client.SendBytes((new byte[0]).Cat(PackHelper.Int32(length).Cat(new[] { (byte)20 }).Cat(new[] { (byte)0 }).Cat(handshakeBytes)));
return(true);
}
public void RequestMetaData(IPeerWireClient peerWireClient)
{
byte[] sendBuffer = new byte[0];
for (Int32 i = 0; i < _pieceCount; i++)
{
BDict masterBDict = new BDict
{
{"msg_type", (BInt) 0},
{"piece", (BInt) i}
};
String encoded = BencodingUtils.EncodeString(masterBDict);
byte[] buffer = Pack.Int32(2 + encoded.Length, Pack.Endianness.Big);
buffer = buffer.Concat(new byte[] {20}).ToArray();
buffer = buffer.Concat(new[] { _parent.GetOutgoingMessageID(peerWireClient, this) }).ToArray();
buffer = buffer.Concat(Encoding.GetEncoding(1252).GetBytes(encoded)).ToArray();
sendBuffer = sendBuffer.Concat(buffer).ToArray();
}
peerWireClient.SendBytes(sendBuffer);
}
public void RequestMetaData(IPeerWireClient peerWireClient)
{
byte[] sendBuffer = new byte[0];
for (Int32 i = 0; i < this._pieceCount; i++)
{
BDict masterBDict = new BDict
{
{ "msg_type", (BInt)0 },
{ "piece", (BInt)i }
};
string encoded = BencodingUtils.EncodeString(masterBDict);
byte[] buffer = PackHelper.Int32(2 + encoded.Length);
buffer = buffer.Concat(new byte[] { 20 }).ToArray();
buffer = buffer.Concat(new[] { this._parent.GetOutgoingMessageID(peerWireClient, this) }).ToArray();
buffer = buffer.Concat(Encoding.GetEncoding(1252).GetBytes(encoded)).ToArray();
sendBuffer = sendBuffer.Concat(buffer).ToArray();
}
peerWireClient.SendBytes(sendBuffer);
}
public void RequestMetaData(IPeerWireClient peerWireClient)
{
var sendBuffer = new byte[0];
for (Int32 i = 0; i < _pieceCount; i++)
{
var masterBDict = new BDict
{
{ MESSAGE_TYPE_KEY, (BInt)0 },
{ PIECE_KEY, (BInt)i }
};
var encoded = BencodingUtils.EncodeString(masterBDict);
var buffer = Pack.Int32(2 + encoded.Length, Pack.Endianness.Big);
buffer = buffer.Concat(new byte[] { 20 }).ToArray();
buffer = buffer.Concat(new[] { _parent.GetOutgoingMessageID(peerWireClient, this) }).ToArray();
buffer = buffer.Concat(Encoding.GetEncoding(1252).GetBytes(encoded)).ToArray();
sendBuffer = sendBuffer.Concat(buffer).ToArray();
}
peerWireClient.SendBytes(sendBuffer);
}
public bool Load(Stream stream)
{
_root = BencodingUtils.Decode(stream);
if (_root == null)
{
return(false);
}
BDict dictRoot = (_root as BDict);
if (dictRoot == null)
{
return(false);
}
if (dictRoot.ContainsKey("announce"))
{
Announce = (BString)dictRoot["announce"];
}
if (dictRoot.ContainsKey("announce-list"))
{
BList announceList = (BList)dictRoot["announce-list"];
foreach (IBencodingType type in announceList)
{
if (type is BString)
{
AnnounceList.Add(type as BString);
}
else
{
BList list = type as BList;
if (list == null)
{
continue;
}
BList listType = list;
foreach (IBencodingType bencodingType in listType)
{
BString s = (BString)bencodingType;
AnnounceList.Add(s);
}
}
}
}
if (dictRoot.ContainsKey("comment"))
{
Comment = (BString)dictRoot["comment"];
}
if (dictRoot.ContainsKey("created by"))
{
CreatedBy = (BString)dictRoot["created by"];
}
if (dictRoot.ContainsKey("creation date"))
{
long ts = (BInt)dictRoot["creation date"];
CreationDate = new DateTime(1970, 1, 1).AddSeconds(ts);
}
if (dictRoot.ContainsKey("info"))
{
BDict infoDict = (BDict)dictRoot["info"];
using (SHA1Managed sha1 = new SHA1Managed())
{
byte[] str = BencodingUtils.EncodeBytes(infoDict);
Hash = sha1.ComputeHash(str);
}
if (infoDict.ContainsKey("files"))
{
//multi file mode
BList fileList = (BList)infoDict["files"];
foreach (IBencodingType bencodingType in fileList)
{
BDict fileDict = (BDict)bencodingType;
String filename = string.Empty;
Int64 filesize = default(Int64);
if (fileDict.ContainsKey("path"))
{
BList filenameList = (BList)fileDict["path"];
foreach (IBencodingType type in filenameList)
{
filename += (BString)type;
filename += "\\";
}
filename = filename.Trim('\\');
}
if (fileDict.ContainsKey("length"))
{
filesize = (BInt)fileDict["length"];
}
Files.Add(filename, filesize);
}
}
if (infoDict.ContainsKey("name"))
{
Name = (BString)infoDict["name"];
if (Files.Count == 0 && infoDict.ContainsKey("length"))
{
Files.Add(Name, (BInt)infoDict["length"]);
}
}
if (infoDict.ContainsKey("private"))
{
BInt isPrivate = (BInt)infoDict["private"];
Private = isPrivate != 0;
}
if (infoDict.ContainsKey("pieces"))
{
BString pieces = (BString)infoDict["pieces"];
for (int x = 0; x < pieces.ByteValue.Length; x += 20)
{
byte[] hash = pieces.ByteValue.GetBytes(x, 20);
PieceHashes.Add(hash);
}
}
if (infoDict.ContainsKey("piece length"))
{
PieceSize = (BInt)infoDict["piece length"];
}
}
return(true);
}
private string getName(string torrentPath)
{
BDict torrentFile = BencodingUtils.DecodeFile(torrentPath) as BDict;
return(((BString)((torrentFile["info"] as BDict)["name"])).Value);
}
internal RemoteRequest(BDict request, IPEndPoint remote, in Bytes <Address> senderAddress)
internal RemoteRequest(BDict request, IPEndPoint remote, in Address senderAddress)
public static IBencodingType Decode(BinaryReader inputStream, ref int bytesConsumed)
{
IBencodingType returnValue = null;
char next = (char)inputStream.PeekChar();
switch (next)
{
case 'i':
// Integer
returnValue = new BInt(0);
break;
case 'l':
// List
returnValue = new BList();
break;
case 'd':
// Dictionary
returnValue = new BDict();
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
// String
returnValue = new BString();
break;
}
return returnValue.Decode(inputStream, ref bytesConsumed);
}
public IDictionary <string, ScrapeInfo> Scrape(string url, string[] hashes)
{
Dictionary <String, ScrapeInfo> returnVal = new Dictionary <string, ScrapeInfo>();
String realUrl = url.Replace("announce", "scrape") + "?";
String hashEncoded = "";
foreach (String hash in hashes)
{
byte[] hashBytes = Pack.Hex(hash);
hashEncoded = hashBytes.Aggregate(hashEncoded, (current, b) => current + String.Format("%{0:X2}", b));
realUrl += "info_hash=" + hashEncoded + "&";
}
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(realUrl);
webRequest.Accept = "*/*";
webRequest.UserAgent = "System.Net.Torrent";
webRequest.Timeout = this.Timeout * 1000;
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
Stream stream = webResponse.GetResponseStream();
if (stream == null)
{
return(null);
}
BinaryReader binaryReader = new BinaryReader(stream);
byte[] bytes = new byte[0];
while (true)
{
try
{
byte[] b = new byte[1];
b[0] = binaryReader.ReadByte();
bytes = bytes.Concat(b).ToArray();
}
catch (Exception)
{
break;
}
}
BDict decoded = (BDict)BencodingUtils.Decode(bytes);
if (decoded.Count == 0)
{
return(null);
}
if (!decoded.ContainsKey("files"))
{
return(null);
}
BDict bDecoded = (BDict)decoded["files"];
foreach (String k in bDecoded.Keys)
{
BDict d = (BDict)bDecoded[k];
if (d.ContainsKey("complete") && d.ContainsKey("downloaded") && d.ContainsKey("incomplete"))
{
String rk = Unpack.Hex(BencodingUtils.ExtendedASCIIEncoding.GetBytes(k));
returnVal.Add(rk, new ScrapeInfo((uint)((BInt)d["complete"]).Value, (uint)((BInt)d["downloaded"]).Value, (uint)((BInt)d["incomplete"]).Value, ScraperType.HTTP));
}
}
return(returnVal);
}
public SuperEventArgs(NetworkStream stream, BDict dict, SuperNode node)
{
Stream = stream;
Dict = dict;
Node = node;
}
public GetValueEventArgs(BDict dict, NetworkStream?stream)
{
Dict = dict;
Stream = stream;
}
public void BDictAddNullKey()
{
BDict dict = new BDict();
dict.Add(null, new BInt(0));
}
public void BDictAddNullValue()
{
BDict dict = new BDict();
dict.Add("a", null);
}
/// <summary>
/// Background thread handling all incoming traffic
/// </summary>
private void ReceivePackets()
{
while (true)
{
try
{
// Get a datagram
receiveFrom = new IPEndPoint(IPAddress.Any, localPort);
// Stopwatch sw = new Stopwatch();
// sw.Start();
byte[] data = udpClientReceive.Receive(ref receiveFrom);
//if (sw.ElapsedMilliseconds > 10) { Console.WriteLine(sw.ElapsedMilliseconds); }
//sw.Stop();
// Decode the message
Stream stream = new MemoryStream(data);
IBencodingType receivedMsg = BencodingUtils.Decode(stream);
string decoded = BencodingUtils.ExtendedASCIIEncoding.GetString(data.ToArray());
//Log("Received message!");
// t is transaction id
// y is e for error, r for reply, q for query
if (receivedMsg is BDict) // throws error.. todo: fix
{
BDict dictMsg = (BDict)receivedMsg;
if (dictMsg.ContainsKey("y"))
{
if (dictMsg["y"].Equals(new BString("e")))
{
//Log("Received error! (ignored)");
}
else if (dictMsg["y"].Equals(new BString("r")))
{
// received reply
if (dictMsg.ContainsKey("r"))
{
if (dictMsg["r"] is BDict)
{
BDict dictMsg2 = (BDict)dictMsg["r"];
if (dictMsg2.ContainsKey("values"))
{
//Log("Received list of peers for torrent!");
countRecvPeerPackets++;
}
else if (dictMsg2.ContainsKey("nodes"))
{
// could be an answer to find node or get peers
//Log("Received list of nodeID & IP & port!");
countRecvNodePackets++;
BString nodeIDString = (BString)dictMsg2["nodes"];
UpdateContactList(nodeIDString);
}
else
{
// no values and no nodes, assuming its a ping,
// at least some form of response
}
}
else
{
}
}
}
else if (dictMsg["y"].Equals(new BString("q")))
{
// received query
countRecvQuery++;
//Log("Received query! (ignored)");
}
}
}
}
catch (Exception ex)
{
//Log("Error receiving data: " + ex.ToString());
}
}
}
/// <summary>
/// Background thread handling all incoming traffic
/// </summary>
private void ReceivePackets()
{
while (true)
{
try
{
// Get a datagram
receiveFrom = new IPEndPoint(IPAddress.Any, localPort);
byte[] data = udpClient.Receive(ref receiveFrom);
// Decode the message
Stream stream = new MemoryStream(data);
IBencodingType receivedMsg = BencodingUtils.Decode(stream);
string decoded = BencodingUtils.ExtendedASCIIEncoding.GetString(data.ToArray());
Log("Received message!");
//Log(decoded);
// t is transaction id : todo: check, since ports are reused
// y is e for error, r for reply, q for query
if (receivedMsg is BDict) // throws error.. todo: fix
{
BDict dictMsg = (BDict)receivedMsg;
if (dictMsg.ContainsKey("y"))
{
if (dictMsg["y"].Equals(new BString("e")))
{
// received error
Log("Received error! (ignored)");
}
else if (dictMsg["y"].Equals(new BString("r")))
{
// received reply
if (dictMsg.ContainsKey("r"))
{
if (dictMsg["r"] is BDict)
{
BDict dictMsg2 = (BDict)dictMsg["r"];
if (dictMsg2.ContainsKey("values") && dictMsg.ContainsKey("t"))
{
Log("Received list of peers for torrent!");
countRecvPeerPackets++;
BList peerAdrs = (BList)dictMsg2["values"];
UpdateTorrentPeerList(peerAdrs, (BString)dictMsg["t"]);
}
else if (dictMsg2.ContainsKey("nodes") && dictMsg.ContainsKey("t"))
{
// could be an answer to find node or get peers
Log("Received list of nodeID & IP & port!");
countRecvNodePackets++;
BString nodeIDString = (BString)dictMsg2["nodes"];
UpdateContactList(nodeIDString, (BString)dictMsg["t"]);
}
else
{
}
}
else
{
}
}
}
else if (dictMsg["y"].Equals(new BString("q")))
{
// received query
Log("Received query! (ignored)");
}
}
}
}
catch (Exception ex)
{
Log("Error receiving data: " + ex.ToString());
}
}
}
public AnnounceInfo Announce(string url, string hash, string peerId, long bytesDownloaded, long bytesLeft, long bytesUploaded,
int eventTypeFilter, int ipAddress, int numWant, int listenPort, int extensions)
{
byte[] hashBytes = Pack.Hex(hash);
byte[] peerIdBytes = Encoding.ASCII.GetBytes(peerId);
String realUrl = url.Replace("scrape", "announce") + "?";
String hashEncoded = "";
foreach (byte b in hashBytes)
{
hashEncoded += String.Format("%{0:X2}", b);
}
String peerIdEncoded = "";
foreach (byte b in peerIdBytes)
{
peerIdEncoded += String.Format("%{0:X2}", b);
}
realUrl += "info_hash=" + hashEncoded;
realUrl += "&peer_id=" + peerIdEncoded;
realUrl += "&port=" + listenPort;
realUrl += "&uploaded=" + bytesUploaded;
realUrl += "&downloaded=" + bytesDownloaded;
realUrl += "&left=" + bytesLeft;
realUrl += "&event=started";
realUrl += "&compact=1";
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(realUrl);
webRequest.Accept = "*/*";
webRequest.UserAgent = "System.Net.Torrent";
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
Stream stream = webResponse.GetResponseStream();
if (stream == null)
{
return(null);
}
BinaryReader binaryReader = new BinaryReader(stream);
byte[] bytes = new byte[0];
while (true)
{
try
{
byte[] b = new byte[1];
b[0] = binaryReader.ReadByte();
bytes = bytes.Concat(b).ToArray();
}
catch (Exception)
{
break;
}
}
BDict decoded = (BDict)BencodingUtils.Decode(bytes);
if (decoded.Count == 0)
{
return(null);
}
if (!decoded.ContainsKey("peers"))
{
return(null);
}
if (!(decoded["peers"] is BString))
{
throw new NotSupportedException("Dictionary based peers not supported");
}
Int32 waitTime = 0;
Int32 seeders = 0;
Int32 leachers = 0;
if (decoded.ContainsKey("interval"))
{
waitTime = (BInt)decoded["interval"];
}
if (decoded.ContainsKey("complete"))
{
seeders = (BInt)decoded["complete"];
}
if (decoded.ContainsKey("incomplete"))
{
leachers = (BInt)decoded["incomplete"];
}
BString peerBinary = (BString)decoded["peers"];
return(new AnnounceInfo(GetPeers(peerBinary.ByteValue), waitTime, seeders, leachers));
}
