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b2: fix html files downloaded via cloudflare 

When reading files from B2 via cloudflare using --b2-download-url
cloudflare strips the Content-Length headers (presumably so it can
inject stuff into the body).

This caused rclone to think the file was corrupted as the length
didn't match.

The patch uses the old length read from the listing if there is no
Content-Length.

See: https://forum.rclone.org/t/b2-cloudflare-error-directory-not-found/23026
This commit is contained in:
Nick Craig-Wood 2021-03-24 17:04:05 +00:00
parent 524cd327e6
commit d042f3194f
1 changed files with 7 additions and 0 deletions
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7
backend/b2/b2.go
View File

@ -1744,6 +1744,13 @@ func (o *Object) getOrHead(ctx context.Context, method string, options []fs.Open
ContentType: resp.Header.Get("Content-Type"),
Info: Info,
}
// When reading files from B2 via cloudflare using
// --b2-download-url cloudflare strips the Content-Length
// headers (presumably so it can inject stuff) so use the old
// length read from the listing.
if info.Size < 0 {
info.Size = o.size
}
return resp, info, nil
}