Add regular expression testing for user name mapping in the peer authentication TAP test

Started by Bertrand Drouvotover 3 years ago5 messageshackers
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#1Bertrand Drouvot
bertranddrouvot.pg@gmail.com

Hi hackers,

while working on [1]/messages/by-id/4f55303e-62c1-1072-61db-fbfb30bd66c8@gmail.com, I thought it could also be useful to add regular
expression testing for user name mapping in the peer authentication TAP
test.

This kind of test already exists in kerberos/t/001_auth.pl but the
proposed one in the peer authentication testing would probably be more
widely tested.

Please find attached a patch proposal to do so.

[1]: /messages/by-id/4f55303e-62c1-1072-61db-fbfb30bd66c8@gmail.com
/messages/by-id/4f55303e-62c1-1072-61db-fbfb30bd66c8@gmail.com

Looking forward to your feedback,

Regards,

--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com

Attachments:

v1-0001-tap-peer-test-with-regexp.patchtext/plain; charset=UTF-8; name=v1-0001-tap-peer-test-with-regexp.patchDownload+48-5
#2Michael Paquier
michael@paquier.xyz
In reply to: Bertrand Drouvot (#1)
Re: Add regular expression testing for user name mapping in the peer authentication TAP test

On Fri, Oct 14, 2022 at 06:31:15PM +0200, Drouvot, Bertrand wrote:

while working on [1], I thought it could also be useful to add regular
expression testing for user name mapping in the peer authentication TAP
test.

Good idea now that we have a bit more coverage in the authentication
tests.

+# Test with regular expression in user name map.
+my $last_system_user_char = substr($system_user, -1);

This would attach to the regex the last character of the system user.
I would perhaps have used more characters than that (-3?), as substr()
with a negative number larger than the string given in input would
give the entire string. That's a nit, though.

+# The regular expression does not match.
+reset_pg_ident($node, 'mypeermap', '/^$', 'testmapuser');

This matches only an empty string, my brain gets that right?
--
Michael

#3Bertrand Drouvot
bertranddrouvot.pg@gmail.com
In reply to: Michael Paquier (#2)
Re: Add regular expression testing for user name mapping in the peer authentication TAP test

Hi,

On 10/15/22 5:11 AM, Michael Paquier wrote:

On Fri, Oct 14, 2022 at 06:31:15PM +0200, Drouvot, Bertrand wrote:

while working on [1], I thought it could also be useful to add regular
expression testing for user name mapping in the peer authentication TAP
test.

Good idea now that we have a bit more coverage in the authentication
tests.

Thanks for looking at it!

+# Test with regular expression in user name map.
+my $last_system_user_char = substr($system_user, -1);

This would attach to the regex the last character of the system user.

Right.

I would perhaps have used more characters than that (-3?), as substr()
with a negative number larger than the string given in input would
give the entire string. That's a nit, though.

I don't have a strong opinion on this, so let's extract the last 3
characters. This is what v2 attached does.

+# The regular expression does not match.
+reset_pg_ident($node, 'mypeermap', '/^$', 'testmapuser');

This matches only an empty string, my brain gets that right?

Right. Giving a second thought to the non matching case, I think I'd
prefer to concatenate the system_user to the system_user instead. This
is what v2 does.

Regards,

--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com

Attachments:

v2-0001-tap-peer-test-with-regexp.patchtext/plain; charset=UTF-8; name=v2-0001-tap-peer-test-with-regexp.patchDownload+55-5
#4Michael Paquier
michael@paquier.xyz
In reply to: Bertrand Drouvot (#3)
Re: Add regular expression testing for user name mapping in the peer authentication TAP test

On Sat, Oct 15, 2022 at 07:54:30AM +0200, Drouvot, Bertrand wrote:

Right. Giving a second thought to the non matching case, I think I'd prefer
to concatenate the system_user to the system_user instead. This is what v2
does.

Fine by me, so applied v2. Thanks!
--
Michael

#5Bertrand Drouvot
bertranddrouvot.pg@gmail.com
In reply to: Michael Paquier (#4)
Re: Add regular expression testing for user name mapping in the peer authentication TAP test

Hi,

On 10/17/22 4:07 AM, Michael Paquier wrote:

On Sat, Oct 15, 2022 at 07:54:30AM +0200, Drouvot, Bertrand wrote:

Right. Giving a second thought to the non matching case, I think I'd prefer
to concatenate the system_user to the system_user instead. This is what v2
does.

Fine by me, so applied v2. Thanks!

Thanks!

Regards,

--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com