Returns the size of the written trailer.
(file protocol.FileInfo, writer io.WriterAt)
| 383 | |
| 384 | // Returns the size of the written trailer. |
| 385 | func writeEncryptionTrailer(file protocol.FileInfo, writer io.WriterAt) (int64, error) { |
| 386 | // Here the file is in native format, while encryption happens in |
| 387 | // wire format (always slashes). |
| 388 | wireFile := file |
| 389 | wireFile.Name = osutil.NormalizedFilename(wireFile.Name) |
| 390 | |
| 391 | trailerSize := encryptionTrailerSize(wireFile) |
| 392 | bs := make([]byte, trailerSize) |
| 393 | n, err := protoutil.MarshalTo(bs, wireFile.ToWire(false)) |
| 394 | if err != nil { |
| 395 | return 0, err |
| 396 | } |
| 397 | binary.BigEndian.PutUint32(bs[n:], uint32(n)) //nolint:gosec |
| 398 | bs = bs[:n+4] |
| 399 | |
| 400 | if _, err := writer.WriteAt(bs, wireFile.Size); err != nil { |
| 401 | return 0, err |
| 402 | } |
| 403 | |
| 404 | return trailerSize, nil |
| 405 | } |
| 406 | |
| 407 | func encryptionTrailerSize(file protocol.FileInfo) int64 { |
| 408 | return int64(proto.Size(file.ToWire(false))) + 4 // XXX: Inefficient |
no test coverage detected