Executing a script inside snap package. Is this possible?

Eloy García (PC Actual) eloy.garcia.pca at gmail.com
Mon Apr 17 12:24:52 UTC 2017


Hi Roberto,

Thanks for the hint. No, I have never used the snappy debugger, but I'll
try when I have time.

Thanks again!!!

Eloy

2017-04-17 10:17 GMT+02:00 Roberto Mier Escandón  <
roberto.escandon at canonical.com>:

> Hey Eloy,
>
> Maybe you have already tried this, but just in case, you can debug the
> snap in confined mode [1], to see if there are some apparmor or seccomp
> denials. That would give you some clues about what is causing snap not
> to work and suggested solution.
>
> sudo snap install snappy-debug
> sudo snappy-debug.security scanlog <yoursnap>
>
> Take a look also at /var/log/syslog
>
> Cheers.
>
> [1] https://snapcraft.io/docs/build-snaps/debugging
>
> On 16/04/17 23:13, Eloy García (PC Actual) wrote:
> > Hello everybody.
> >
> > I develop a graphical java-based application which is published in the
> > Ubuntu Store as a snap package (sctrict confinment) called
> > wallpaperdownloader to download, manage and set desktop wallpapers.
> >
> > I'm developing version 2.7 which will bring KDE support, but for this I
> > need to execute a shell script from Java. In classic confinement and
> > natively, this script is executed without problems. I use this code to do
> > it:
> >
> > process = Runtime.getRuntime().exec("/bin/sh " +
> WDUtilities.getAppPath() +
> > WDUtilities.URL_SLASH + WDUtilities.PLASMA_SCRIPT + " " +
> wallpaperPath);
> >
> > As you can see, I use /bin/sh command to run the script. This is the
> > content of the script:
> >
> > #!/bin/bash
> >
> > # Changing wallpaper
> > qdbus org.kde.plasmashell /PlasmaShell org.kde.PlasmaShell.
> evaluateScript
> > "var allDesktops = desktops();print (allDesktops);for
> > (i=0;i<allDesktops.length;i++) {d =
> > allDesktops[i];d.wallpaperPlugin = 'org.kde.image';d.currentConfigGroup
> =
> > Array('Wallpaper', 'org.kde.image', 'General');d.writeConfig('Image',
> > 'file://"$1"')}"
> >
> > This command changes the current wallpaper for version 5.8 or higher in
> > Plasma.
> >
> > When this part is executed within the snap package (strict confinement),
> > nothing happens. I have tried to include bash and dash pacakges as
> > stage-packages but it doesn work. Is this something that can be achieved
> > using the snap package system?
> >
> > Thank you very much!
> >
> > Best,
> >
> > Eloy
> >
>
> --
> --
> . Roberto Mier Escandón.
> . Software Engineer
> .
> . Canonical - Solutions Engineering
> --
>
> --
> Snapcraft mailing list
> Snapcraft at lists.snapcraft.io
> Modify settings or unsubscribe at: https://lists.ubuntu.com/
> mailman/listinfo/snapcraft
>



-- 
Eloy García Almadén



More information about the Snapcraft mailing list