Hi,
I’m make snap of an application with snapcraft. I want to use strict confinement mode. Snap of my application work fine except about one point.
My application in sevral case must open firefox web-browser to display pages.
When this happens application continue to works but the web browser isn’t open. Application’s log show the following line :
sh: 1: firefox: not found
Can anyone can help me do this possible with strict confinement ?
Thanks by advance.
The correct way to open a system browser is to use the xdg-open mechanism.
Do you have exemple about how to do this ?
I previously tried to add these lines into snapcraft.yaml but no way to open web browser.
snapd-xdg-open:
source: https://github.com/ubuntu-core/snapd-xdg-open.git
plugin: dump
organize:
data/xdg-open: bin/xdg-open
stage-packages:
-dbus
For plugs:
plugs: [desktop, desktop-legacy,x11,home,browser-support,network,network-bing]
I may have missed something, but what ?
You should not pull in snapd-xdg-open. The core snap (or a relevant base) already ships xdg-open that does what you want. All your application needs to do is declare a desktop plug and run xdg-open <url>.
I do sevral snapcraft.yaml but the result is the same:
Remove snapd-xdg-open part. Leave dektop plug then create /bin/firefox into my my snap directory (so my snap app can try to open web browser as it designed).
The content of this file is just:
#! /bin/sh
echo “Call xdg-open”
echo "arg 1 : "$1
#Just for test
firefox http://www.free.fr
When i launch my snap (strict mode), firefox isn’t launch but the log is:
Snapd-xdg-open is install and run fine when i try ‘xdg-open http://www.free.fr’ into a terminal.
Any idea ?
As described above, don’t pull in xdg-open inside your snap. Snapd automatically provides one that works.
your script calls firefox http://www.free.fr
instead you want to follow @zyga-snapd’s advise and also make your script call:
xdg-open http://www.free.fr
that will open the site in the defined default browser of your desktop (typically firefox but users might have removed firefox and use chromium … xdg-open takes care of that so your snap does not break)
Sorry i didn’t understand exactly what you mean ;(
This is my current snapcraft.yaml, maybe this can help…
Firefox is just the default choice of application conceptors to display results of the game…
name: foobillardplus
version: '3.43.0'
summary: billard game simulator
description: |
FooBillard++ is an advanced 3D OpenGL billiard game based on the original foobillard 3.0a sources from Florian Berger.
You can play it with one or two players or against the computer.
|
The game features:
* Wood paneled table with gold covers and gold diamonds.
* Reflections on balls.
* Zoom in and out, rotation, different angles and bird's eye view.
* Different game modes: 8 or 9-ball, Snooker or Karambol.
* Tournaments. Compete against other players.
* Animated cue with strength and eccentric hit adjustment.
* Jump shots and snipping.
* Realistic gameplay and billiard sounds.
* Red-Green stereo.
* And much more.
|
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: FooBillard++
Upstream-Contact: Holger Schäkel <foobillardplus@go4more.de>
Source: http://sourceforge.net/projects/foobillardplus
|
Copyright: 2001-2003, Florian Berger
2010-2013, Holger Schäkel <foobillardplus@go4more.de>
License: GPL-2
#grade: devel,stable
grade: stable
#confinement: devmode,classic,strict
confinement: strict
architectures: [amd64]
type: app
#before launch snapcraft use get_foobillardplus.sh shell script to generate foobillardplusmake.tar.gz archive.
#foobillardplusmake.tar.gz archive created from source files contents the configure file needed to apply snapcraft make plugin.
#Readme.txt informs about configuration options to use to generate this snapfile.
#For developpement of snapfile :
#-use Ubuntu 16.04 Xenial distribution to generate snapfile, and check if snap-packages specified into snapcraft are installed on for building step.
#-use sudo strace foobillardplus.launcher command to locate errors at startup if needed.
#command exposition from outside of the snap
apps:
launcher:
#launcher for foobillardplus binary
#for devmode and strict confinement use command : desktop-launch $SNAP/usr/games/foobillardplus/bin/foobillardplus
command: desktop-launch $SNAP/usr/games/foobillardplus/bin/foobillardplus
#for classic mode (no confinement)use command: bin/desktop-launch $SNAP/usr/games/foobillardplus/bin/foobillardplus
#command: bin/desktop-launch $SNAP/usr/games/foobillardplus/bin/foobillardplus
#desktop application menu shortcut
desktop: usr/games/foobillardplus/foobillardplus.desktop
#define interfaces for strict confinement
plugs: [desktop, desktop-legacy, wayland, x11, opengl, home, pulseaudio, network, network-bind]
#order of snap creation step : pull > build > stage > prime > snap
#application parts
parts:
#build foobillardplus from sources with snapcraft make plugin
foobillardplus:
source: foobillardplusmake.tar.gz
plugin: make
#if artifacts used then no make install done. Just specified artifacts files/directory will be add to snap
artifacts : [src,data,AUTHORS,COPYING,INSTALL,README,ChangeLog,TODO,foobillardplus.png,foobillardplus.xbm]
#after directive is mandatory for devmode and strict modes
after:
- desktop-qt5
stage-packages:
- dbus
- libslang2
- libglu1
- libglu1-mesa
- libgl1
- libgl1-mesa-glx
- libfreetype6
- fonts-dejavu
- fonts-dejavu-core
- ttf-dejavu-core
- libpng12-0
- libsdl1.2-dev
- libpcre3
- zlib1g
- libsdl-mixer1.2
- libsdl-net1.2
- libjack0
- libopenal1
- libmad0
- libvorbisfile3
- libmikmod3
- libfluidsynth1
organize:
src/foobillardplus: usr/games/foobillardplus/bin/foobillardplus
src: usr/games/foobillardplus/src
data: usr/games/foobillardplus/data
'AUTHORS': usr/games/foobillardplus/AUTHORS
'COPYING': usr/games/foobillardplus/COPYING
'INSTALL': usr/games/foobillardplus/INSTALL
'README': usr/games/foobillardplus/README
'ChangeLog': usr/games/foobillardplus/ChangeLog
'TODO': usr/games/foobillardplus/TODO
'foobillardplus.png': usr/games/foobillardplus/foobillardplus.png
'foobillardplus.xbm': usr/games/foobillardplus/foobillardplus.xbm
foobillardplus-dump:
#dump context :
#at least to files/directories needed into archive to copy archive content into snap at the wright path,
#otherwise use organize directive.
#misc/snapcraft.yaml [snapcraft.yaml use to generate this foobillardplus snapfile]
#misc/foobillardplusdump.tar.gz [archive of files to add into the snap]
#misc/get_foobillardplus.sh [shell script to download sources then generate the configure fine needed for snapcraft make plugin]
#usr/games/foobillardplus/data/foobillardplus.desktop [desktop application launcher file]
#usr/games/foobillardplus/data/*.ttf [all fonts .ttf files needed]
#bin/firefox [shell script include into the application source, and used by application binary itself to display results of the game]
source: foobillardplusdump.tar.gz
plugin: dumpYou are running firefox path/to/file.xml. Don’t do that. Do xdg-open path/to/file.xml.
P.S. I don’t know whether xdg-open supports file:/// paths, so you might fail to launch your file in the browser because it is local.
Yes, i did it and change bin/firefox to test with something different from /// url,
#! /bin/sh
echo “Call xdg-open”
echo "arg 1 : "$1
#Just for test
xdg-open http://www.free.fr
But the error is the same:
Error org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.SafeLauncher was not provided by any .service files
But if i test it outside snap, on host, in terminal xdg-open http://www.free.fr works fine… very strange…
My host is clean Ubuntu 16.04 Xenial with all snaps core, snapcraft, … refreshed… and tested generated snapfile on Ubuntu 18.10 Cosmic but the rest is the same…
PS : you’re wright file:/// could be change to another path (in $SNAP_USER for exemple with home plug), but before i need to validate xdg-open http://www.free.fr works fine.
this looks like your snap still contains xdg-utils … did you do a snapcraft clean before you re-built the snap when you dropped xdg-utils from your snapcraft.yaml ?
Perfect guys.
You’re wright : the trouble come from my snap wich contained xdg-utils of my previous try, even if this part was removed from my snapcraft.yaml.
I just use ‘snapcraft clean’ to really remove it, then rebuild with snapcraft command my project. Now it is possible to open urls like www.free.fr into web-browser from my snap.
Thanks a lot for your help !