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From: "Glen Choo via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: "Jonathan Tan" <jonathantanmy@google.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Emily Shaffer" <nasamuffin@google.com>,
	"Phillip Wood" <phillip.wood123@gmail.com>,
	"Glen Choo" <chooglen@google.com>,
	"Glen Choo" <chooglen@google.com>
Subject: [PATCH v3 06/12] builtin/config.c: test misuse of format_config()
Date: Tue, 20 Jun 2023 19:43:45 +0000	[thread overview]
Message-ID: <a2a891a069f46d3d77cafe61f64402c93cffaae4.1687290233.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1497.v3.git.git.1687290231.gitgitgadget@gmail.com>

From: Glen Choo <chooglen@google.com>

current_config_*() functions aren't meant to be called outside of
config callbacks because they read state that is only set when iterating
through config. However, several sites in builtin/config.c are
indirectly calling these functions outside of config callbacks thanks to
the format_config() helper. Show the current, bad behavior via tests
so that the fixes in a subsequent commit will be clearer.

The misbehaving cases are:

* "git config --get-urlmatch --show-scope" results in an "unknown"
   scope, where it arguably should show the config file's scope. It's
   clear that this wasn't intended, though: we knew that
   "--get-urlmatch" couldn't show config source metadata, which is why
   "--show-origin" was marked incompatible with "--get-urlmatch" when
   it was introduced [1]. It was most likely a mistake that we allowed
   "--show-scope" to sneak through.

* Similarly, "git config --default" doesn't set config source metadata ,
  so "--show-scope" also results in "unknown", and "--show-origin"
  results in a BUG().

[1] https://lore.kernel.org/git/20160205112001.GA13397@sigill.intra.peff.net/

Signed-off-by: Glen Choo <chooglen@google.com>
---
 t/t1300-config.sh | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 86bfbc2b364..fa6a8df2521 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -1668,6 +1668,21 @@ test_expect_success 'urlmatch' '
 	test_cmp expect actual
 '
 
+test_expect_success 'urlmatch with --show-scope' '
+	cat >.git/config <<-\EOF &&
+	[http "https://weak.example.com"]
+		sslVerify = false
+		cookieFile = /tmp/cookie.txt
+	EOF
+
+	cat >expect <<-EOF &&
+	unknown	http.cookiefile /tmp/cookie.txt
+	unknown	http.sslverify false
+	EOF
+	git config --get-urlmatch --show-scope HTTP https://weak.example.com >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success 'urlmatch favors more specific URLs' '
 	cat >.git/config <<-\EOF &&
 	[http "https://example.com/"]
@@ -2055,6 +2070,10 @@ test_expect_success '--show-origin blob ref' '
 	test_cmp expect output
 '
 
+test_expect_success '--show-origin with --default' '
+	test_must_fail git config --show-origin --default foo some.key
+'
+
 test_expect_success '--show-scope with --list' '
 	cat >expect <<-EOF &&
 	global	user.global=true
@@ -2123,6 +2142,12 @@ test_expect_success '--show-scope with --show-origin' '
 	test_cmp expect output
 '
 
+test_expect_success '--show-scope with --default' '
+	git config --show-scope --default foo some.key >actual &&
+	echo "unknown	foo" >expect &&
+	test_cmp expect actual
+'
+
 test_expect_success 'override global and system config' '
 	test_when_finished rm -f \"\$HOME\"/.gitconfig &&
 	cat >"$HOME"/.gitconfig <<-EOF &&
-- 
gitgitgadget


  parent reply	other threads:[~2023-06-20 19:44 UTC|newest]

Thread overview: 115+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-21 19:13 [PATCH 00/14] [RFC] config: remove global state from config iteration Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 01/14] config.c: introduce kvi_fn(), use it for configsets Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 02/14] config.c: use kvi for CLI config Glen Choo via GitGitGadget
2023-05-01 11:06   ` Ævar Arnfjörð Bjarmason
2023-04-21 19:13 ` [PATCH 03/14] config: use kvi for config files Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 04/14] config: add kvi.path, use it to evaluate includes Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 05/14] config: pass source to config_parser_event_fn_t Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 06/14] config: inline git_color_default_config Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 07/14] urlmatch.h: use config_fn_t type Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 08/14] (RFC-only) config: add kvi arg to config_fn_t Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 09/14] (RFC-only) config: apply cocci to config_fn_t implementations Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 10/14] (RFC-only) config: finish config_fn_t refactor Glen Choo via GitGitGadget
2023-05-01 11:19   ` Ævar Arnfjörð Bjarmason
2023-05-05 21:07     ` Jonathan Tan
2023-05-09 22:46       ` Glen Choo
2023-05-11 16:21         ` Jonathan Tan
2023-05-08 21:00     ` Glen Choo
2023-04-21 19:13 ` [PATCH 11/14] config: remove current_config_(line|name|origin_type) Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 12/14] config: remove current_config_scope() Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 13/14] config: pass kvi to die_bad_number() Glen Choo via GitGitGadget
2023-04-21 19:13 ` [PATCH 14/14] config: remove config_reader from configset_add_value Glen Choo via GitGitGadget
2023-05-30 18:41 ` [PATCH v2 00/14] [RFC] config: remove global state from config iteration Glen Choo via GitGitGadget
2023-05-30 18:41   ` [PATCH v2 01/14] config: inline git_color_default_config Glen Choo via GitGitGadget
2023-05-30 18:42   ` [PATCH v2 02/14] urlmatch.h: use config_fn_t type Glen Choo via GitGitGadget
2023-05-30 18:42   ` [PATCH v2 03/14] (RFC-only) config: add kvi arg to config_fn_t Glen Choo via GitGitGadget
2023-06-01  9:50     ` Phillip Wood
2023-06-01 16:22       ` Glen Choo
2023-06-02  9:54         ` Phillip Wood
2023-06-02 16:46           ` Glen Choo
2023-06-05  9:38             ` Phillip Wood
2023-06-09 23:19               ` Glen Choo
2023-05-30 18:42   ` [PATCH v2 04/14] (RFC-only) config: apply cocci to config_fn_t implementations Glen Choo via GitGitGadget
2023-05-30 18:42   ` [PATCH v2 05/14] (RFC-only) config: finish config_fn_t refactor Glen Choo via GitGitGadget
2023-06-01 22:17     ` Jonathan Tan
2023-05-30 18:42   ` [PATCH v2 06/14] config.c: pass kvi in configsets Glen Choo via GitGitGadget
2023-06-01 22:21     ` Jonathan Tan
2023-05-30 18:42   ` [PATCH v2 07/14] config: provide kvi with config files Glen Choo via GitGitGadget
2023-06-01 22:41     ` Jonathan Tan
2023-06-01 23:54     ` Jonathan Tan
2023-05-30 18:42   ` [PATCH v2 08/14] builtin/config.c: test misuse of format_config() Glen Choo via GitGitGadget
2023-05-30 18:42   ` [PATCH v2 09/14] config.c: provide kvi with CLI config Glen Choo via GitGitGadget
2023-06-01 23:35     ` Jonathan Tan
2023-06-02 17:26       ` Glen Choo
2023-05-30 18:42   ` [PATCH v2 10/14] trace2: plumb config kvi Glen Choo via GitGitGadget
2023-06-01 23:38     ` Jonathan Tan
2023-05-30 18:42   ` [PATCH v2 11/14] config: pass kvi to die_bad_number() Glen Choo via GitGitGadget
2023-06-01 23:48     ` Jonathan Tan
2023-06-02 17:23       ` Glen Choo
2023-05-30 18:42   ` [PATCH v2 12/14] config.c: remove config_reader from configsets Glen Choo via GitGitGadget
2023-05-30 18:42   ` [PATCH v2 13/14] config: add kvi.path, use it to evaluate includes Glen Choo via GitGitGadget
2023-06-02  0:06     ` Jonathan Tan
2023-05-30 18:42   ` [PATCH v2 14/14] config: pass source to config_parser_event_fn_t Glen Choo via GitGitGadget
2023-06-02  0:08     ` Jonathan Tan
2023-06-02 17:20       ` Glen Choo
2023-06-20 19:43   ` [PATCH v3 00/12] config: remove global state from config iteration Glen Choo via GitGitGadget
2023-06-20 19:43     ` [PATCH v3 01/12] config: inline git_color_default_config Glen Choo via GitGitGadget
2023-06-20 21:01       ` Junio C Hamano
2023-06-20 19:43     ` [PATCH v3 02/12] urlmatch.h: use config_fn_t type Glen Choo via GitGitGadget
2023-06-20 21:02       ` Junio C Hamano
2023-06-20 19:43     ` [PATCH v3 03/12] config: add ctx arg to config_fn_t Glen Choo via GitGitGadget
2023-06-20 19:43     ` [PATCH v3 04/12] config.c: pass ctx in configsets Glen Choo via GitGitGadget
2023-06-20 21:19       ` Junio C Hamano
2023-06-20 19:43     ` [PATCH v3 05/12] config: pass ctx with config files Glen Choo via GitGitGadget
2023-06-20 19:43     ` Glen Choo via GitGitGadget [this message]
2023-06-20 21:35       ` [PATCH v3 06/12] builtin/config.c: test misuse of format_config() Junio C Hamano
2023-06-20 23:06         ` Glen Choo
2023-06-23 20:32       ` Jonathan Tan
2023-06-24  1:31         ` Jeff King
2023-06-28 17:28         ` Glen Choo
2023-06-20 19:43     ` [PATCH v3 07/12] config.c: pass ctx with CLI config Glen Choo via GitGitGadget
2023-06-23 20:35       ` Jonathan Tan
2023-06-23 21:41         ` Glen Choo
2023-06-20 19:43     ` [PATCH v3 08/12] trace2: plumb config kvi Glen Choo via GitGitGadget
2023-06-23 20:40       ` Jonathan Tan
2023-06-20 19:43     ` [PATCH v3 09/12] config: pass kvi to die_bad_number() Glen Choo via GitGitGadget
2023-06-20 19:43     ` [PATCH v3 10/12] config.c: remove config_reader from configsets Glen Choo via GitGitGadget
2023-06-23 20:57       ` Jonathan Tan
2023-06-23 21:33         ` Junio C Hamano
2023-06-20 19:43     ` [PATCH v3 11/12] config: add kvi.path, use it to evaluate includes Glen Choo via GitGitGadget
2023-06-20 19:43     ` [PATCH v3 12/12] config: pass source to config_parser_event_fn_t Glen Choo via GitGitGadget
2023-06-20 21:46       ` Junio C Hamano
2023-06-21 21:46     ` [PATCH v3 00/12] config: remove global state from config iteration Junio C Hamano
2023-06-21 23:06       ` Glen Choo
2023-06-23 21:02         ` Jonathan Tan
2023-06-23 21:33           ` Junio C Hamano
2023-06-23 21:45           ` Glen Choo
2023-06-26 18:11     ` [PATCH v4 " Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 01/12] config: inline git_color_default_config Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 02/12] urlmatch.h: use config_fn_t type Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 03/12] config: add ctx arg to config_fn_t Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 04/12] config.c: pass ctx in configsets Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 05/12] config: pass ctx with config files Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 06/12] builtin/config.c: test misuse of format_config() Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 07/12] config.c: pass ctx with CLI config Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 08/12] trace2: plumb config kvi Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 09/12] config: pass kvi to die_bad_number() Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 10/12] config.c: remove config_reader from configsets Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 11/12] config: add kvi.path, use it to evaluate includes Glen Choo via GitGitGadget
2023-06-26 18:11       ` [PATCH v4 12/12] config: pass source to config_parser_event_fn_t Glen Choo via GitGitGadget
2023-06-26 20:45       ` [PATCH v4 00/12] config: remove global state from config iteration Junio C Hamano
2023-06-28 19:26       ` [PATCH v5 00/11] " Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 01/11] config: inline git_color_default_config Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 02/11] urlmatch.h: use config_fn_t type Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 03/11] config: add ctx arg to config_fn_t Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 04/11] config.c: pass ctx in configsets Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 05/11] config: pass ctx with config files Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 06/11] config.c: pass ctx with CLI config Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 07/11] trace2: plumb config kvi Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 08/11] config: pass kvi to die_bad_number() Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 09/11] config.c: remove config_reader from configsets Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 10/11] config: add kvi.path, use it to evaluate includes Glen Choo via GitGitGadget
2023-06-28 19:26         ` [PATCH v5 11/11] config: pass source to config_parser_event_fn_t Glen Choo via GitGitGadget
2023-06-28 22:23         ` [PATCH v5 00/11] config: remove global state from config iteration Jonathan Tan
2023-06-28 22:47           ` Junio C Hamano
2023-07-11 18:41         ` Phillip Wood

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