[PATCH 06/21] builtin/config: check for writeability after source is set up
- From
Patrick Steinhardt <ps@pks.im>
- Date
- May 10, 2024, 11:24 UTC
- Message-ID
- <edfd7caa39ab990faf5b49a6c572a612a35dbdd5.1715339393.git.ps@pks.im>
- In-Reply-To
- <cover.1715339393.git.ps@pks.im>
The `check_write()` function verifies that we do not try to write to a config source that cannot be written to, like for example stdin. But while the new subcommands do call this function, they do so before calling `handle_config_location()`. Consequently, we only end up checking the default config location for writeability, not the location that was actually specified by the caller of git-config(1).
Fix this by calling `check_write()` after `handle_config_location()`. We will further clarify the relationship between those two functions in a subsequent commit where we remove the global state that both implicitly rely on.
Signed-off-by: Patrick Steinhardt <ps@pks.im> --- builtin/config.c | 10 +++++----- t/t1300-config.sh | 6 ++++++ 2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/builtin/config.c b/builtin/config.c index 8f3342b593..9295a2f737 100644 --- a/builtin/config.c +++ b/builtin/config.c @@ -843,7 +843,6 @@ static int cmd_config_set(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, opts, builtin_config_set_usage, PARSE_OPT_STOP_AT_NON_OPTION); - check_write(); check_argc(argc, 2, 2); if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern) @@ -856,6 +855,7 @@ static int cmd_config_set(int argc, const char **argv, const char *prefix) comment = git_config_prepare_comment_string(comment_arg); handle_config_location(prefix); + check_write(); value = normalize_value(argv[0], argv[1], &default_kvi); @@ -891,13 +891,13 @@ static int cmd_config_unset(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, opts, builtin_config_unset_usage, PARSE_OPT_STOP_AT_NON_OPTION); - check_write(); check_argc(argc, 1, 1); if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern) die(_("--fixed-value only applies with 'value-pattern'")); handle_config_location(prefix); + check_write(); if ((flags & CONFIG_FLAGS_MULTI_REPLACE) || value_pattern) return git_config_set_multivar_in_file_gently(given_config_source.file, @@ -918,10 +918,10 @@ static int cmd_config_rename_section(int argc, const char **argv, const char *pr argc = parse_options(argc, argv, prefix, opts, builtin_config_rename_section_usage, PARSE_OPT_STOP_AT_NON_OPTION); - check_write(); check_argc(argc, 2, 2); handle_config_location(prefix); + check_write(); ret = git_config_rename_section_in_file(given_config_source.file, argv[0], argv[1]); @@ -943,10 +943,10 @@ static int cmd_config_remove_section(int argc, const char **argv, const char *pr argc = parse_options(argc, argv, prefix, opts, builtin_config_remove_section_usage, PARSE_OPT_STOP_AT_NON_OPTION); - check_write(); check_argc(argc, 1, 1); handle_config_location(prefix); + check_write(); ret = git_config_rename_section_in_file(given_config_source.file, argv[0], NULL); @@ -997,10 +997,10 @@ static int cmd_config_edit(int argc, const char **argv, const char *prefix) }; argc = parse_options(argc, argv, prefix, opts, builtin_config_edit_usage, 0); - check_write(); check_argc(argc, 0, 0); handle_config_location(prefix); + check_write(); return show_editor(); } diff --git a/t/t1300-config.sh b/t/t1300-config.sh index d90a69b29f..9de2d95f06 100755 --- a/t/t1300-config.sh +++ b/t/t1300-config.sh @@ -2835,6 +2835,12 @@ test_expect_success 'specifying multiple modes causes failure' ' test_cmp expect err ' +test_expect_success 'writing to stdin is rejected' ' + echo "fatal: writing to stdin is not supported" >expect && + test_must_fail git config ${mode_set} --file - foo.bar baz 2>err && + test_cmp expect err +' + done test_done
-- 2.45.GIT