> Any idea what method I should be using to set the environment variable? Do you
> see the environment variable in 'about:support'?
For some reason it does not show up in about:support, but it is there if snap
run --shell firefox -c 'env|grep KRB' shows it.
> I first tried what appeared to be the proper way, but got an error:
>
> wtcline@wtcline-desk20:~$ sudo snap set firefox
> env.KRB5CCNAME="FILE:/tmp/krb5cc_1000" error: cannot perform the following
> tasks:
> - Run configure hook of "firefox" snap (invalid option name:
> "KRB5CCNAME")
I did not know this method. The manual crafting of the environment variable
works for me (although in my case it already is in the environment so I don't
really need to do it and am just showing it for demonstration's sake):
--->
# Locate the ticket
% ls /tmp/krb5cc_746400500_DdKFTS
/tmp/krb5cc_746400500_DdKFTS
# Make sure the variable is correctly transformed in the sandbox
% KRB5CCNAME=FILE:/tmp/krb5cc_746400500_DdKFTS snap run --shell firefox -c
'env|grep KRB' KRB5CCNAME=FILE:/var/lib/snapd/hostfs/tmp/krb5cc_746400500_DdKFTS
# Now just launch Firefox and navigate to a place where Kerberos is needed
% KRB5CCNAME=FILE:/tmp/krb5cc_746400500_DdKFTS snap run firefox
<---
> Yet if I set 'KRB5CCNAME=/tmp/krb5cc_1000' in '/etc/environment' and
> reboot then I can get output like the following:
Note KRB5CCNAME must start with the file type, here FILE, so
[INCORRECT] KRB5CCNAME=/tmp/krb5cc_1000
[-CORRECT-] KRB5CCNAME=FILE:/tmp/krb5cc_1000
That is why you saw the "will not expose" error.
> At some point I
> also managed to get:
>
> wtcline@wtcline-desk20:/home/wtcline$ snap run --shell firefox -c
> 'env|grep KRB' KRB5CCNAME=FILE:/var/lib/snapd/hostfs/tmp/krb5cc_1000
That one is correct, you probably fixed the missing prefix at some point without
noticing.
Now, from what I gather it nonetheless does not work, so let's take a step
back. Can you walk me through the minimal path from boot until your attempt on
Firefox? I.e., do you get a log in screen, you log in with your normal, local
user? Then you generate a ticket with Kinit and then start Firefox with or
without the environment variable?
What is then the output of
id
klist
snap run --shell firefox 'env|grep KRB; id; od ${KRB5CCNAME#FILE:}'
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https://bugs.launchpad.net/bugs/1849346
Title:
[SRU] kerberos GSSAPI no longer works after deb->snap transition
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