Testing use of krb5 and gssapi in PostgreSQL?

[Stephan Bergmann]

On 14/10/2019 13:33, Lionel Élie Mamane wrote:
> On Mon, Oct 14, 2019 at 11:05:32AM +0200, Stephan Bergmann wrote:
>> The only use of WITH_KRB5 and WITH_GSSAPI in LO appears to be the PostgreSQL
>> support (see connectivity/Library_postgresql-sdbc-impl.mk and
>> external/postgresql/ExternalProject_postgresql.mk).  Is there some
>> documentation how to test whether the use of krb5 and gssapi in the
>> PostgreSQL support actually works?
> 
> Try to connect to a PostgreSQL support with GSSAPI and Kerberos?

For the record:  Found a PostgreSQL server inside RH that I could access 
with my RH Kerberos credentials.  What I tested was "File - New - 
Database", then on the wizard's first "Select database" page "Connect to 
an existing database: PostgreSQL", on the second "Connection settings" 
page specify "host=... port=5433 dbname=public sslmode=require", and on 
the third "Set up user authentication" page leave everything blank and 
click "Test Connection".  This worked with a local Linux LO build, 
announcing a successful test of the connection.

For both the current LO 6.3.2 Flathub build against 
org.freedesktop.Sdk//18.08 (where krb5 is included in the runtime), as 
well as for a local LO 6.3.2 Flatpak build of 
<https://github.com/flathub/org.libreoffice.LibreOffice/pull/104> 
"Freedesktop19.08" (against org.freedesktop.Sdk//19.08, where krb5 is no 
longer included in the runtime, but where I bundle it with LO), it 
worked as follows:

The test failed to access my Kerberos ticket from outside the Flatpak 
sandbox (the connection test reporting an error ending in "GSSAPI 
continuation error: No Kerberos credentials available (default cache: 
FILE:/tmp/krb5cc_1000)").  But it worked when I explicitly obtained a 
ticket inside the sandbox first (`flatpak run --command=bash 
org.libreoffice.LibreOffice`, then in the sandbox `kinit ... && 
/app/libreoffice/program/soffice`).