gnome-shell/js/dbusServices/meson.build
Florian Müllner 91b7474d5a dbusServices/extensions: Proxy Extensions API
Similar to the previously added org.freedesktop.Notifications proxy,
this exposes the org.gnome.Shell.Extensions API and forwards any
request to the real implementation in gnome-shell.

The motivation differs though: We want to be able to package the
extension app as flatpak and distribute it separately, but the
extension prefs dialog is hard to impossible to sandbox:

 - filenames need translating between host and sandbox, and we
   can only do that in some cases (serializing/deserializing
   extensions), but not others (extension settings that refer
   to files)

 - system extensions install their GSettings schemas in the system
   path; the best we can do there is assume a host prefix of /usr
   and set GSETTINGS_SCHEMA_DIR in the flatpak (eeks)

 - extensions may rely on additional typelibs that are present on
   the host (for example because gnome-shell itself depends on
   them), but not inside the sandbox - unless we bundle all of
   gnome-shell's dependencies

 - if gjs/mozjs differ between host and sandbox, extensions must
   handle different runtimes for the extension and its prefs

And all those issues occur despite a very permissive sandbox (full
host filesystem access, full dconf access, full org.gnome.Shell
access (including Eval()!)).

This new service will give us an alternative place for handling
the preference dialog:

 - it runs outside of gnome-shell process, so can open windows

 - it runs on the host, so the extension's prefs get to run
   in the same namespace as the extension itself

That is, the service will provide portal-like functionality (albeit
not using the org.freedesktop.portal.* namespace, as extension
management is an inherently privileged operation).

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1106
2020-03-23 15:39:12 +00:00

43 lines
1.0 KiB
Meson

launcherconf = configuration_data()
launcherconf.set('PACKAGE_NAME', meson.project_name())
launcherconf.set('prefix', prefix)
launcherconf.set('libdir', libdir)
dbus_services = {
'org.gnome.Shell.Extensions': 'extensions',
'org.gnome.Shell.Notifications': 'notifications',
}
config_dir = '@0@/..'.format(meson.current_build_dir())
foreach service, dir : dbus_services
configure_file(
input: 'dbus-service.in',
output: service,
configuration: launcherconf,
install_dir: pkgdatadir,
)
serviceconf = configuration_data()
serviceconf.set('service', service)
serviceconf.set('gjs', gjs.path())
serviceconf.set('pkgdatadir', pkgdatadir)
configure_file(
input: 'dbus-service.service.in',
output: service + '.service',
configuration: serviceconf,
install_dir: servicedir
)
gnome.compile_resources(
service + '.src',
service + '.src.gresource.xml',
dependencies: [config_js],
source_dir: ['.', '..', dir, config_dir],
gresource_bundle: true,
install: true,
install_dir: pkgdatadir
)
endforeach