[Linphone-users] Cannot View Any File Transferred by Chat to Linux Desktop

[Dennis Filder]

On Tue, Nov 02, 2021 at 08:46:23PM -0500, Parrot Debian LinPhone User via 
Linphone-users wrote:
> I can't view any kind of file transferred to my Debian Linux
> desktop-based LinPhone installation via chat.  The text chat and the
> file icon show up in the message pane, but the file is not stored in
> the capture folders, and clicking on the icon in the message pane
> does nothing. I'm running LinPhone under Firejail.  However, any
> file I transfer from my desktop installation to an Android
> smartphone can be viewed.  Log file attached.
>
> OS: Parrot Debian Linux 4.11 Live, Encrypted Persistence
> Packages: LinPhone Desktop 4.2.5-3
>           LinPhone Common 4.4.21-2

Debian maintainer here.  Three questions:

1. What version of Parrot OS are you actually running?  You say 4.11,
   but the log says 5.0 (LTS)

2. Have you tried running it without Firejail?  Does it work then?

3. Are you sure the file does not show up in the temporary directory
   allocated by Firejail for Linphone?

The Firejail profile for Linphone is maintained by the upstream
developers of Firejail and I doubt they have the resources to perform
rigorous testing of it.  You could ask them to take a look at it, but
even if they patch it right away, it will take the fix a long time to
trickle through.  Your best bet is to try to fix the profile yourself
and submit it as a patch to the Firejail devs.

However, jailing applications of non-trivial size and scope like
Linphone is notoriously difficult, and the application to a certain
degree has to cooperate with the jail to function usefully as
otherwise the jail has to be made too loose to bring an increase in
security.

I can maybe take a look once I get around to making an AppArmor
profile, but that's unlikely to happen in the near future.

Regards.