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From: Stefan Beller <sbeller@google.com>
To: gitster@pobox.com
Cc: git@vger.kernel.org, j6t@kdbg.org, jrnieder@gmail.com, sbeller@google.com
Subject: [PATCH] t7406: submodule.<name>.update command must not be run from .gitmodules
Date: Tue, 26 Sep 2017 11:54:13 -0700
Message-ID: <20170926185413.21209-1-sbeller@google.com> (raw)
In-Reply-To: <xmqqshfa9doa.fsf@gitster.mtv.corp.google.com>

submodule.<name>.update can be assigned an arbitrary command via setting
it to "!command". When this command is found in the regular config, Git
ought to just run that command instead of other update mechanisms.

However if that command is just found in the .gitmodules file, it is
potentially untrusted, which is why we do not run it.  Add a test
confirming the behavior.

Suggested-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
---

Johannes wrote:
> I am pretty confident that this does not test what you intend to
> test. Notice that $TEST_DIRECTORY is expanded when the script is
> written. But that path contains a blank, and we have something like
> this in the test script:
>
>       #!/bin/sh
>       >/the/build/directory/t/trash directory.t7406/bad

I can confirm that.

Instead of mucking around with writing a script, "to make it robust",
I decided to got the simplest route and just have the command "!false",
which would make "git submodule update submodule" return an error.

Thanks,
Stefan


 t/t7406-submodule-update.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 034914a14f..a9ea098e55 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -406,6 +406,16 @@ test_expect_success 'submodule update - command in .git/config' '
 	)
 '
 
+test_expect_success 'submodule update - command in .gitmodules is ignored' '
+	test_when_finished "git -C super reset --hard HEAD^" &&
+
+	git -C super config -f .gitmodules submodule.submodule.update "!false" &&
+	git -C super commit -a -m "add command to .gitmodules file" &&
+	git -C super/submodule reset --hard $submodulesha1^ &&
+	git -C super submodule update submodule &&
+	test_path_is_missing bad
+'
+
 cat << EOF >expect
 Execution of 'false $submodulesha1' failed in submodule path 'submodule'
 EOF
-- 
2.14.0.rc0.3.g6c2e499285


  reply index

Thread overview: 10+ messages in thread (expand / mbox.gz / Atom feed / [top])
2017-09-25 19:55 Stefan Beller
2017-09-25 20:04 ` Jonathan Nieder
2017-09-25 22:50   ` Stefan Beller
2017-09-26  0:01     ` Jonathan Nieder
2017-09-26  5:37     ` Johannes Sixt
2017-09-26  6:28       ` Junio C Hamano
2017-09-26 18:54         ` Stefan Beller [this message]
2017-09-26 19:46           ` Johannes Sixt
2017-09-26 19:54             ` Stefan Beller
2017-09-27  3:21               ` Junio C Hamano

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