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init: fix bug regarding ~/ expansion in init.templateDir 

We used to read the init.templateDir setting at builtin/init-db.c using
a git_config() callback that, in turn, called git_config_pathname(). To
simplify the config reading logic at this file and plug a memory leak,
this was replaced by a direct call to git_config_get_value() at
e4de4502e6 ("init: remove git_init_db_config() while fixing leaks",
2021-03-14). However, this function doesn't provide path expanding
semantics, like git_config_pathname() does, so paths with '~/' and
'~user/' are treated literally. This makes 'git init' fail to handle
init.templateDir paths using these constructs:

	$ git config init.templateDir '~/templates_dir'
	$ git init
	'warning: templates not found in ~/templates_dir'

Replace the git_config_get_value() call by git_config_get_pathname(),
which does the '~/' and '~user/' expansions. Also add a regression test.
Note that unlike git_config_get_value(), the config cache does not own
the memory for the path returned by git_config_get_pathname(), so we
must free() it.

Reported on IRC by rkta.

Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Matheus Tavares 2021-05-25 00:41:01 -03:00 committed by Junio C Hamano
parent 37be11994f
commit a185dd58ec
2 changed files with 22 additions and 9 deletions
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3
builtin/init-db.c
View File

@ -211,8 +211,9 @@ static int create_default_files(const char *template_path,
* values (since we've just potentially changed what's available on
* disk).
*/
git_config_get_value("init.templatedir", &init_template_dir);
git_config_get_pathname("init.templatedir", &init_template_dir);
copy_templates(template_path, init_template_dir);
free((char *)init_template_dir);
git_config_clear();
reset_shared_repository();
git_config(git_default_config, NULL);

28
t/t0001-init.sh
View File

@ -186,21 +186,33 @@ test_expect_success 'init with --template (blank)' '
test_path_is_missing template-blank/.git/info/exclude
'

init_no_templatedir_env () {
(
sane_unset GIT_TEMPLATE_DIR &&
NO_SET_GIT_TEMPLATE_DIR=t &&
export NO_SET_GIT_TEMPLATE_DIR &&
git init "$1"
)
}

test_expect_success 'init with init.templatedir set' '
mkdir templatedir-source &&
echo Content >templatedir-source/file &&
test_config_global init.templatedir "${HOME}/templatedir-source" &&
(
mkdir templatedir-set &&
cd templatedir-set &&
sane_unset GIT_TEMPLATE_DIR &&
NO_SET_GIT_TEMPLATE_DIR=t &&
export NO_SET_GIT_TEMPLATE_DIR &&
git init
) &&

init_no_templatedir_env templatedir-set &&
test_cmp templatedir-source/file templatedir-set/.git/file
'

test_expect_success 'init with init.templatedir using ~ expansion' '
mkdir -p templatedir-source &&
echo Content >templatedir-source/file &&
test_config_global init.templatedir "~/templatedir-source" &&

init_no_templatedir_env templatedir-expansion &&
test_cmp templatedir-source/file templatedir-expansion/.git/file
'

test_expect_success 'init --bare/--shared overrides system/global config' '
test_config_global core.bare false &&
test_config_global core.sharedRepository 0640 &&