public synchronized void addTorrentEntry(URN urn) {
String torrentDirPath =
SharingSettings.INCOMPLETE_DIRECTORY.get().getAbsolutePath()
+ File.separator
+ Base32.encode(urn.getBytes());
File torrentDir = new File(torrentDirPath);
hashes.put(urn, torrentDir);
}
/**
* Constructs the file system using the given BTData & hash information. If any of the information
* is malformed, throws a ValueException.
*
* @param data contains all the data about a .torrent file
* @param numHashes number of pieces the torrent was divided into
* @param pieceLength size of divided up torrent file
* @param infoHash a string of alphanumeric characters in the .torrent file that the client uses
* to verify the data that is being transferred
* @throws ValueException
*/
TorrentFileSystem(BTData data, int numHashes, long pieceLength, byte[] infoHash)
throws IOException {
// name of the torrent, also specifying the directory under which to save the torrents.
_name = CommonUtils.convertFileName(data.getName());
// we need to check the name of the torrent, security risk!
if (_name.length() == 0) throw new ValueException("bad torrent name");
_incompleteFile =
new File(
SharingSettings.INCOMPLETE_DIRECTORY.get(),
Base32.encode(infoHash) + File.separator + _name);
_completeFile = new File(SharingSettings.getSaveDirectory(_name), _name);
if (!FileUtils.isReallyParent(SharingSettings.getSaveDirectory(_name), _completeFile)) {
throw new SaveLocationException(LocationCode.SECURITY_VIOLATION, _completeFile);
}
if (data.getFiles() != null) {
List<BTData.BTFileData> files = data.getFiles();
List<TorrentFile> torrents = new ArrayList<TorrentFile>(files.size());
long position = 0;
for (BTData.BTFileData file : files) {
String torrentPath = _name + file.getPath();
TorrentFile f =
new TorrentFile(
file.getLength(),
new File(_completeFile, file.getPath()).getAbsolutePath(),
torrentPath);
f.setBeginPiece((int) (position / pieceLength));
f.setStartByte(position);
position += f.length();
f.setEndPiece((int) (position / pieceLength));
f.setEndByte(position - 1);
if (!FileUtils.isReallyInParentPath(_completeFile, f))
throw new SaveLocationException(LocationCode.SECURITY_VIOLATION, f);
torrents.add(f);
}
if (files.size() == 0) throw new ValueException("bad metainfo, no files!");
_files = torrents;
// add folders, for easier conflict checking later on
for (String folderPath : data.getFolders()) _folders.add(new File(_completeFile, folderPath));
_folders.add(_completeFile);
} else {
String torrentPath = data.getName();
TorrentFile f =
new TorrentFile(data.getLength(), _completeFile.getAbsolutePath(), torrentPath);
f.setBeginPiece(0);
f.setStartByte(0);
f.setEndPiece(numHashes - 1);
f.setEndByte(f.length());
_files = new ArrayList<TorrentFile>(1);
_files.add(f);
}
_unmodFiles = Collections.unmodifiableList(_files);
_totalSize = calculateTotalSize(_files);
if (_totalSize <= 0) throw new ValueException("invalid size " + _totalSize);
}
/**
* Stub for calling getFile(String, URN, int, SharingSettings.INCOMPLETE_DIRECTORY.getValue());
*/
public synchronized File getFile(String name, URN sha1, long size) throws IOException {
return getFile(name, sha1, size, SharingSettings.INCOMPLETE_DIRECTORY.get());
}