From 1274a155af96fcbcf2e60ae9fc9ee8dbdbbe987a Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Thu, 23 Feb 2017 15:04:40 -0800 Subject: [PATCH] config: use git_config_parse_key() in git_config_parse_parameter() The parsing of one-shot assignments of configuration variables that come from the command line historically was quite loose and allowed anything to pass. It also downcased everything in the variable name, even a three-level
.. name in which the part must be treated in a case sensitive manner. Existing git_config_parse_key() helper is used to parse the variable name that comes from the command line, i.e. "git config VAR VAL", and handles these details correctly. Replace the strbuf_tolower() call in git_config_parse_parameter() with a call to it to correct both issues. git_config_parse_key() does a bit more things that are not necessary for the purpose of this codepath (e.g. it allocates a separate buffer to return the canonicalized variable name because it takes a "const char *" input), but we are not in a performance-critical codepath here. Signed-off-by: Junio C Hamano --- config.c | 14 ++++++++---- t/t1300-repo-config.sh | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+), 5 deletions(-) diff --git a/config.c b/config.c index b8cce1dffa..1c1a1520ff 100644 --- a/config.c +++ b/config.c @@ -295,7 +295,9 @@ int git_config_parse_parameter(const char *text, config_fn_t fn, void *data) { const char *value; + char *canonical_name; struct strbuf **pair; + int ret; pair = strbuf_split_str(text, '=', 2); if (!pair[0]) @@ -313,13 +315,15 @@ int git_config_parse_parameter(const char *text, strbuf_list_free(pair); return error("bogus config parameter: %s", text); } - strbuf_tolower(pair[0]); - if (fn(pair[0]->buf, value, data) < 0) { - strbuf_list_free(pair); - return -1; + + if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) { + ret = -1; + } else { + ret = (fn(canonical_name, value, data) < 0) ? -1 : 0; + free(canonical_name); } strbuf_list_free(pair); - return 0; + return ret; } int git_config_from_parameters(config_fn_t fn, void *data) diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh index 923bfc5a26..ea371020fa 100755 --- a/t/t1300-repo-config.sh +++ b/t/t1300-repo-config.sh @@ -1097,6 +1097,68 @@ test_expect_success 'multiple git -c appends config' ' test_cmp expect actual ' +test_expect_success 'last one wins: two level vars' ' + + # sec.var and sec.VAR are the same variable, as the first + # and the last level of a configuration variable name is + # case insensitive. + + echo VAL >expect && + + git -c sec.var=val -c sec.VAR=VAL config --get sec.var >actual && + test_cmp expect actual && + git -c SEC.var=val -c sec.var=VAL config --get sec.var >actual && + test_cmp expect actual && + + git -c sec.var=val -c sec.VAR=VAL config --get SEC.var >actual && + test_cmp expect actual && + git -c SEC.var=val -c sec.var=VAL config --get sec.VAR >actual && + test_cmp expect actual +' + +test_expect_success 'last one wins: three level vars' ' + + # v.a.r and v.A.r are not the same variable, as the middle + # level of a three-level configuration variable name is + # case sensitive. + + echo val >expect && + git -c v.a.r=val -c v.A.r=VAL config --get v.a.r >actual && + test_cmp expect actual && + git -c v.a.r=val -c v.A.r=VAL config --get V.a.R >actual && + test_cmp expect actual && + + # v.a.r and V.a.R are the same variable, as the first + # and the last level of a configuration variable name is + # case insensitive. + + echo VAL >expect && + git -c v.a.r=val -c v.a.R=VAL config --get v.a.r >actual && + test_cmp expect actual && + git -c v.a.r=val -c V.a.r=VAL config --get v.a.r >actual && + test_cmp expect actual && + git -c v.a.r=val -c v.a.R=VAL config --get V.a.R >actual && + test_cmp expect actual && + git -c v.a.r=val -c V.a.r=VAL config --get V.a.R >actual && + test_cmp expect actual +' + +for VAR in a .a a. a.0b a."b c". a."b c".0d +do + test_expect_success "git -c $VAR=VAL rejects invalid '$VAR'" ' + test_must_fail git -c "$VAR=VAL" config -l + ' +done + +for VAR in a.b a."b c".d +do + test_expect_success "git -c $VAR=VAL works with valid '$VAR'" ' + echo VAL >expect && + git -c "$VAR=VAL" config --get "$VAR" >actual && + test_cmp expect actual + ' +done + test_expect_success 'git -c is not confused by empty environment' ' GIT_CONFIG_PARAMETERS="" git -c x.one=1 config --list ' -- 2.11.4.GIT