Re: [PATCH 0/2] t/lib-gpg: a gpgsm fix, a minor improvement, and a question

> Hi,
> 
> Looking through the build logs for the fedora git packages, I noticed
> it was missing the GPGSM prereq.  I added the necessary package to the
> build requirements but GPGSM was still failing to be set.  This turned
> out to be due to a use of ${GNUPGHOME} without quoting, which leads
> to a non-zero exit from echo and the end of the happy && chain when
> using bash as the test shell.  Fixing this allows the GPGSM test
> prereq to be set.
> 
> While I was poking around I also saw an extra gpgconf call to kill
> gpg-agent.  This was copied from the GPG block earlier in lib-gpg.sh,
> but should not be needed (as far as I can tell).  I don't think it can
> cause any real harm apart from causing gpg and gpgsm to start the
> agent more often than necessary.  But I didn't run the tests with the
> --stress option to look for potential issues that could be more
> serious.
> 
> Lastly, the GPG test prereq was failing in two of the tests where it
> was used, t5573-pull-verify-signatures and
> t7612-merge-verify-signatures.  I tracked this down to an annoying
> issue with gnugp-2¹, which recently became the default /bin/gpg in
> fedora².
> 
> Using gnupg2 as /bin/gpg means using gpg-agent by default.  When
> using a non-standard GNUPGHOME, gpg-agent defaults to putting its
> socket files in GNUPGHOME and fails if the path for any of them is
> longer than sun_path (108 chars on linux, 104 on OpenBSD and FreeBSD,
> and likely similar on other unices).
> 
> When building in the typical fedora build tool (mock), the path to the
> git test dir is "/builddir/build/BUILD/git-2.20.1/t."  That path then
> has "trash directory.$TEST_NAME$TEST_STRESS_JOB_SFX" appended and a
> "gpghome" directory within.  For t5573 and t7612, the gpg-agent socket
> path for S.gpg-agent.browser exceeds the sun_path limit and gpg-agent
> fails to start.  Sadly, this is handled poorly by gpg and makes the
> tests fail to set either the GPG or GPGSM prereqs.
> 
> For the fedora packages, I decided to pass --root=/tmp/git-t.XXXX (via
> mktemp, of course) to the test suite which ensures a path short enough
> to keep gpg-agent happy.
> 
> I don't know if there are other packagers or builders who run into
> this, so maybe it's not worth much effort to try and have the test
> suite cope better.  It took me longer than I would have liked to
> track it down, so I thought I'd mention it in case anyone else has
> run into this or has thoughts on how to improve lib-gpg.sh while
> waiting for GnuPG to improve this area.
> 
> A GIT_TEST_GNUPGHOME_ROOT var to set the root path for the GNUPGHOME
> dirs in the tests is one thought I had, but didn't try to put it into
> patch form.  Setting the --root test option is probably enough control
> for most cases.
> 
> ¹ https://dev.gnupg.org/T2964
> ²
> https://fedoraproject.org/wiki/Changes/GnuPG2_as_default_GPG_implementation
> 
> Todd Zullinger (2):
>   t/lib-gpg: quote path to ${GNUPGHOME}/trustlist.txt
>   t/lib-gpg: drop redundant killing of gpg-agent
> 
>  t/lib-gpg.sh | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>