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

[Gunnar Hjalmarsson]

Thanks for the hints, Martin. I gave up on ls-dbus-backend, discovered
gir1.2-polkit-1.0 and wrote a new function in utils.py. Now the code
runs, but there is a tiny problem: AdminPrivileges() always returns
True. :(

On 2012-12-23 10:56, Martin Pitt wrote:
> 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.

Simple indeed, bug would it really be a solution? Even if the polkit
dialog allows you to enter the credentials of an admin user, as long as
you are a standard user you typically don't know any admin password, do
you? Personally I think that the current UI, where the admin only
controls are disabled (greyed out) for standard users, is better than
letting the user know only by an authentication failure.

Question is if there is a way to make polkit tell whether you can
authenticate as the current _user_. Unfortunately the get_is_challenge()
method seems to take into account the possibility to enter an admin
password...

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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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