Hi Martin,
On 26/09/25 9:20 pm, Martin Dosch wrote:
> Dear all,
>
> the latest upstream release of privatebin-cli [0] always fails the tests
> in the debin build environment:
>
>> === RUN TestPaste_MimeTypeInference/Text_file
>> paste_test.go:317:
>> Error Trace:
>> /build/reproducible-path/privatebin-cli-2.1.1/_build/src/go.gearno.de/privatebin/paste_test.go:317
>> Error:
>> "data:application/octet-stream;base64,YXR0YWNobWVudCBjb250ZW50" does not
>> contain "data:text/plain"
>> Test: TestPaste_MimeTypeInference/Text_file
>
> But when running the tests manually it works:
>
>> go test .
>> ok go.gearno.de/privatebin/v2 0.014s
>
> I had a look at the dependencies, but didn't spot anything suspicious.
> I would highly appreciate if someone could give some hints how to debug
> this.
I checked the code in question which seems to take a mimetype and sets it to
"application/octet-stream"
only if `mime.TypeByExtension` does not give an output.
```
if len(p.Attachment) > 0 {
mimeType := p.MimeType
if mimeType == "" {
ext := filepath.Ext(p.AttachmentName)
mimeType = mime.TypeByExtension(ext)
if mimeType == "" {
mimeType = "application/octet-stream"
}
}
```
Looking at your output, it seems to me that for ".txt" extension, this is
returned empty.
So I wrote this tiny program [1] and ran it inside the unshare chroot and on my
system.
On my system I got "MIME: text/plain; charset=utf-8" but on chroot it was
empty. So it
just seemed like `/etc/mime.types` was missing. Just adding a B-D on
`media-types` fixes
the problem for me.
I've pushed a corresponding commit to salsa. You might also want to add this to
Depends or
maybe Recommends on this package.
A quick search shows golang mime package does show that it looks for mimetypes
with this
file
https://sources.debian.org/src/golang-1.25/1.25.0-2/src/mime/type_unix.go?hl=28#L28
but I did not dig much into it.
Hope that helps!
[1]:
package main
import (
"fmt"
"mime"
)
func main() {
ext := ".txt"
mimeType := mime.TypeByExtension(ext)
fmt.Println("MIME: ", mimeType)
}
