void createTorrent(TorrentCreationViewModel vm)
{
/*
* info: a dictionary that describes the file(s) of the torrent. There are two possible forms: one for the case of a 'single-file' torrent with no directory structure, and one for the case of a 'multi-file' torrent (see below for details)
* announce: The announce URL of the tracker (string)
* announce-list: (optional) this is an extention to the official specification, offering backwards-compatibility. (list of lists of strings).
* The official request for a specification change is here.
* creation date: (optional) the creation time of the torrent, in standard UNIX epoch format (integer, seconds since 1-Jan-1970 00:00:00 UTC)
* comment: (optional) free-form textual comments of the author (string)
* created by: (optional) name and version of the program used to create the .torrent (string)
* encoding: (optional) the string encoding format used to generate the pieces part of the info dictionary in the .torrent metafile (string)
*/
BDictionary info = new BDictionary();
info["pieces"] = new BString(buildPiecesHash(vm.Media));
info["piece length"] = new BInteger(pieceLength);
info["private"] = new BInteger(vm.IsPrivate ? 1 : 0);
if (vm.Media.Count == 1)
{
singleFileTorrent(info, new FileInfo(vm.Media.ElementAt(0).Location));
}
else
{
List <FileInfo> fileInfo = new List <FileInfo>();
foreach (MediaFileItem item in vm.Media)
{
fileInfo.Add(new FileInfo(item.Location));
}
multiFileTorrent(info, vm, fileInfo);
}
BDictionary metaInfo = new BDictionary();
metaInfo["info"] = info;
metaInfo["announce"] = new BString(vm.AnnounceURL);
metaInfo["creation date"] = new BInteger((long)(DateTime.Now - new DateTime(1970, 1, 1)).TotalSeconds);
metaInfo["created by"] = new BString(createdBy);
if (!String.IsNullOrEmpty(vm.Comment) && !String.IsNullOrWhiteSpace(vm.Comment) && vm.IsCommentEnabled)
{
metaInfo["comment"] = new BString(vm.Comment);
}
if (!String.IsNullOrEmpty(encoding) && !String.IsNullOrWhiteSpace(encoding) && vm.IsCommentEnabled)
{
metaInfo["encoding"] = new BString(encoding);
}
String torrentName = String.IsNullOrEmpty(vm.TorrentName) ?
Path.GetFileNameWithoutExtension(vm.Media.ElementAt(0).Location) : vm.TorrentName;
String torrentFullName = vm.OutputPath + "\\" + torrentName + ".torrent";
if (CancellationToken.IsCancellationRequested)
{
return;
}
FileStream outputTorrent = null;
try
{
outputTorrent = new FileStream(torrentFullName, FileMode.CreateNew);
BinaryWriter bw = new BinaryWriter(outputTorrent);
foreach (char c in metaInfo.ToBencodedString())
{
bw.Write((byte)c);
}
InfoMessages.Add("Created torrent file: " + torrentFullName);
}
finally
{
if (outputTorrent != null)
{
outputTorrent.Close();
}
}
}
void singleFileTorrent(BDictionary info, FileInfo file)
{
info["name"] = new BString(file.Name);
info["length"] = new BInteger(file.Length);
}