[Bug 1008344] Re: checks "admin" group membership instead of querying polkit

[Martin Pitt]

I'm not sure why this doesn't work, as other parts of the code do the
same. However, this is not what you want anyway: This check would
already authenticate, i. e. you would get a password prompt right at the
startup of l-s just for checking if you are an administrator. Instead,
this should query polkit in "no interactivity" mode (no
POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION), and check if
it gets a "no but you can authorize" result (sorry, can't research the
details here).

But with polkit we can probably just drop the whole is_admin check
completely. If a non-admin user is starting l-s, the polkit dialog will
still allow you to authenticate as another user who is an admin.

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https://bugs.launchpad.net/bugs/1008344

Title:
  checks "admin" group membership instead of querying polkit

Status in “language-selector” package in Ubuntu:
  Triaged

Bug description:
  In a new install of Ubuntu Precise, I cannot make any system-wide
  changes in the language selector (such as installing languages or
  clicking "Apply System-Wide"), only user-specific changes. All those
  controls for system-wide changes are greyed out, although my user does
  have sudo abilities and I would be able to enter the root password of
  the machine.

  The machine is freshly installed, but with customizations specific to
  our site, e.g. ldap authentication for users. Specifically, my user is
  an ldap user, not a local one, and there is a group in the ldap
  directory which was granted sudo capability by adding it to
  /etc/sudoers. My user is part of that group. sudo on the command line
  and gksudo work fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: language-selector-gnome 0.79
  ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
  Uname: Linux 3.2.0-24-generic x86_64
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  Date: Mon Jun  4 08:20:04 2012
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: language-selector
  UpgradeStatus: No upgrade log present (probably fresh install)

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