private void CheckMetadata(BencodedString announce, BencodedDictionary info)
{
if (announce == null || info == null)
{
throw new TorrentException("Invalid metadata, \'announce\'/\'info\' not of expected type.");
}
}
private void CheckMetadata(BencodedString announce, BencodedDictionary info)
{
if (announce == null || info == null)
{
throw new TorrentException(string.Format("Invalid metadata, 'announce'/'info' not of expected type."));
}
}
private void LoadMetadata()
{
BencodedDictionary metadata = GetMetadata();
var announce = metadata["announce"] as BencodedString;
var info = metadata["info"] as BencodedDictionary;
CheckMetadata(announce, info);
var pieceLength = info["piece length"] as BencodedInteger;
List <byte[]> checksumList = GetRawChecksums(info, pieceLength);
BencodedString name = GetNameFromInfo(info);
List <FileEntry> decodedFiles = DecodeFiles(info, name);
if (metadata.ContainsKey("announce-list"))
{
var announceList = (BencodedList)metadata["announce-list"];
AnnounceList = DecodeAnnounceList(announceList).AsReadOnly();
}
AnnounceURL = announce;
Checksums = checksumList.AsReadOnly();
Files = decodedFiles.AsReadOnly();
PieceLength = pieceLength;
PieceCount = Checksums.Count;
Name = name;
InfoHash = ComputeInfoHash(info);
Announces = CreateAnnouces(AnnounceURL, AnnounceList);
TotalLength = Files.Sum(f => f.Length);
}
public override bool Equals(object obj)
{
try {
BString other = (BString)obj;
return(BencodedString.Equals(other.BencodedString));
}
catch (InvalidCastException e) {
throw new InvalidCastException(e.Message);
}
}
private List <FileEntry> DecodeFiles(BencodedDictionary info, BencodedString name)
{
var decodedFiles = new List <FileEntry>();
if (info.ContainsKey("files"))
{
var files = info["files"] as BencodedList;
CheckInfoFiles(files);
foreach (BencodedDictionary file in files)
{
var torrentFile = CreateTorrentFile(file);
decodedFiles.Add(torrentFile);
}
}
else
{
var fileLength = info["length"] as BencodedInteger;
CheckFileLength(fileLength);
decodedFiles.Add(new FileEntry(name, fileLength));
}
return(decodedFiles);
}
private List<FileEntry> DecodeFiles(BencodedDictionary info, BencodedString name)
{
var decodedFiles = new List<FileEntry>();
if (info.ContainsKey("files"))
{
var files = info["files"] as BencodedList;
CheckInfoFiles(files);
foreach (BencodedDictionary file in files)
{
FileEntry torrentFile = CreateTorrentFile(file);
decodedFiles.Add(torrentFile);
}
}
else
{
var fileLength = info["length"] as BencodedInteger;
CheckFileLength(fileLength);
decodedFiles.Add(new FileEntry(name, fileLength));
}
return decodedFiles;
}
private void CheckMetadata(BencodedString announce, BencodedDictionary info)
{
if (announce == null || info == null)
throw new TorrentException(string.Format("Invalid metadata, 'announce'/'info' not of expected type."));
}