Robert Ancell <robert.anc...@canonical.com> writes:

> The merge proposal might be easier to review -
> https://code.launchpad.net/~robert-ancell/lightdm/setcred-on-
> unlock/+merge/212337

Ah, indeed, thank you!  That looks very good here if it works.  I'm still
worried about whether the right environment will be set for it to find the
user's ticket cache, but hopefully it will just work.

-- 
Russ Allbery (r...@debian.org)               <http://www.eyrie.org/~eagle/>

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https://bugs.launchpad.net/bugs/1296276

Title:
  Unlocking with greeter fails to properly renew kerberos tickets with
  pam-krb5

Status in Light Display Manager:
  Triaged
Status in “lightdm” package in Ubuntu:
  Triaged

Bug description:
  I am using the pam-krb5 module to log into a Kerberos realm using
  lightdm.  This works the initial time I log in, when I come in through
  lightdm.  However, once I am logged in, and I lock the screen using
  light-locker, when I unlock the screen I no longer get renewed
  tickets.

  The problem seems to be this:

  -rw------- 1 me       me     504 Mar 23 08:37 krb5cc_1000_sjkfhagfg
  -rw------- 1 root   root    504 Mar 23 08:38 krb5cc_pam_lsdkjhfsdk

  So what is happening is that on the initial login, I get a valid
  ticket cache, owned by my logging-in user, and showing my UID in the
  file name.  This ticket works fine.  However, once I lock the screen
  and then unlock it, I get a ticket cache owned by root, with "_pam_"
  in the filename, and of course I can't use it because I am not logged
  in as root.

  This problem did not occur in 12.04 LTS, probably because it did not
  use light-locker.  The pam-krb5 module works in all other cases in my
  installations, so I do not believe this is any kind of problem with
  the pam_krb5 module.

  Thanks,
  Brian

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: light-locker 1.2.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
  Uname: Linux 3.13.0-18-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  Date: Sun Mar 23 08:40:38 2014
  InstallationDate: Installed on 2014-03-22 (0 days ago)
  InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Alpha amd64 
(20140320)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: light-locker
  UpgradeStatus: No upgrade log present (probably fresh install)

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