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dropbox: fix infinite loop on uploading a corrupted file

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Before this change, if rclone attempted to upload a file which read
more bytes than the size it declared then the uploader would enter an
infinite loop.

See: https://forum.rclone.org/t/transfer-percentages-100-again/32109
This commit is contained in:
Nick Craig-Wood 2022-07-29 17:40:05 +01:00
parent 72227a0151
commit 3a8e52de74
1 changed files with 3 additions and 0 deletions
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3
backend/dropbox/dropbox.go
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@ -1697,6 +1697,9 @@ func (o *Object) uploadChunked(ctx context.Context, in0 io.Reader, commitInfo *f
if size > 0 {
// if size is known, check if next chunk is final
appendArg.Close = uint64(size)-in.BytesRead() <= uint64(chunkSize)
if in.BytesRead() > uint64(size) {
return nil, fmt.Errorf("expected %d bytes in input, but have read %d so far", size, in.BytesRead())
}
} else {
// if size is unknown, upload as long as we can read full chunks from the reader
appendArg.Close = in.BytesRead()-cursor.Offset < uint64(chunkSize)