Sanity-check config variable names when adding and retrieving them. As a side
effect code duplication between git_config_set_multivar and get_value (in
builtin/config.c) was removed and the common functionality was placed in
git_config_parse_key.
This breaks a test in t1300 which used invalid section-less keys in the tests
for "git -c". However, allowing such names there was useless, since there was
no way to set them via config file, and no part of git actually tried to use
section-less keys. This patch updates the test to use more realistic examples.
Signed-off-by: Libor Pechacek <lpechacek@xxxxxxx>
Cc: Jeff King <peff@xxxxxxxx>
---
On Fri 21-01-11 11:23:19, Jeff King wrote:
> Typo: s/ckeck/check/
>
> Other than that, this version looks good to me.
Fixed the typo and return values from get_value and git_config_set_multivar.
We have changed git_config_parse_key to return negative values on error, but
forgot to negate the numbers when returning them as exit codes. That led to
process exit codes 255 and 254, which is, I think, unwanted.
> Acked-by: Jeff King <peff@xxxxxxxx>
Thanks. Now I consider this patch truly final.
Libor
builtin/config.c | 18 ++++++--
cache.h | 1 +
config.c | 107 ++++++++++++++++++++++++++++++-----------------
t/t1300-repo-config.sh | 7 +--
4 files changed, 85 insertions(+), 48 deletions(-)
diff --git a/builtin/config.c b/builtin/config.c
index ca4a0db..66c0586 100644
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -153,7 +153,6 @@ static int show_config(const char *key_, const char *value_, void *cb)
static int get_value(const char *key_, const char *regex_)
{
int ret = -1;
- char *tl;
char *global = NULL, *repo_config = NULL;
const char *system_wide = NULL, *local;
@@ -168,17 +167,26 @@ static int get_value(const char *key_, const char *regex_)
}
key = xstrdup(key_);
- for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
- *tl = tolower(*tl);
- for (tl=key; *tl && *tl != '.'; ++tl)
- *tl = tolower(*tl);
if (use_key_regexp) {
+ char *tl;
+
+ /* TODO - this naive pattern lowercasing obviously does not
+ * work for more complex patterns like `^[^.]*Foo.*bar' */
+ for (tl = key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
+ *tl = tolower(*tl);
+ for (tl = key; *tl && *tl != '.'; ++tl)
+ *tl = tolower(*tl);
+
key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
if (regcomp(key_regexp, key, REG_EXTENDED)) {
fprintf(stderr, "Invalid key pattern: %s\n", key_);
goto free_strings;
}
+ } else {
+ ret = -git_config_parse_key(key_, &key, NULL);
+ if (ret)
+ goto free_strings;
}
if (regex_) {
diff --git a/cache.h b/cache.h
index d83d68c..1e32d63 100644
--- a/cache.h
+++ b/cache.h
@@ -997,6 +997,7 @@ extern int git_config_maybe_bool(const char *, const char *);
extern int git_config_string(const char **, const char *, const char *);
extern int git_config_pathname(const char **, const char *, const char *);
extern int git_config_set(const char *, const char *);
+extern int git_config_parse_key(const char *, char **, int *);
extern int git_config_set_multivar(const char *, const char *, const char *, int);
extern int git_config_rename_section(const char *, const char *);
extern const char *git_etc_gitconfig(void);
diff --git a/config.c b/config.c
index 625e051..c976544 100644
--- a/config.c
+++ b/config.c
@@ -1098,6 +1098,72 @@ int git_config_set(const char *key, const char *value)
return git_config_set_multivar(key, value, NULL, 0);
}
+/* Auxiliary function to sanity-check and split the key into the section
+ * identifier and variable name.
+ *
+ * Returns 0 on success, -1 when there is an invalid character in the key and
+ * -2 if there is no section name in the key.
+ *
+ * store_key - pointer to char* which will hold a copy of the key with
+ * lowercase section and variable name, can be NULL
+ * baselen - pointer to int which will hold the length of the
+ * section + subsection part, can be NULL
+ */
+int git_config_parse_key(const char *key, char **store_key, int *baselen_)
+{
+ int i, dot, baselen;
+ const char *last_dot = strrchr(key, '.');
+
+ /*
+ * Since "key" actually contains the section name and the real
+ * key name separated by a dot, we have to know where the dot is.
+ */
+
+ if (last_dot == NULL) {
+ error("key does not contain a section: %s", key);
+ return -2;
+ }
+
+ baselen = last_dot - key;
+ if (baselen_)
+ *baselen_ = baselen;
+
+ /*
+ * Validate the key and while at it, lower case it for matching.
+ */
+ if (store_key)
+ *store_key = xmalloc(strlen(key) + 1);
+
+ dot = 0;
+ for (i = 0; key[i]; i++) {
+ unsigned char c = key[i];
+ if (c == '.')
+ dot = 1;
+ /* Leave the extended basename untouched.. */
+ if (!dot || i > baselen) {
+ if (!iskeychar(c) || (i == baselen+1 && !isalpha(c))) {
+ error("invalid key: %s", key);
+ goto out_free_ret_1;
+ }
+ c = tolower(c);
+ } else if (c == '\n') {
+ error("invalid key (newline): %s", key);
+ goto out_free_ret_1;
+ }
+ if (store_key)
+ (*store_key)[i] = c;
+ }
+ if (store_key)
+ (*store_key)[i] = 0;
+
+ return 0;
+
+out_free_ret_1:
+ if (store_key)
+ free(*store_key);
+ return -1;
+}
+
/*
* If value==NULL, unset in (remove from) config,
* if value_regex!=NULL, disregard key/value pairs where value does not match.
@@ -1124,59 +1190,22 @@ int git_config_set(const char *key, const char *value)
int git_config_set_multivar(const char *key, const char *value,
const char *value_regex, int multi_replace)
{
- int i, dot;
int fd = -1, in_fd;
int ret;
char *config_filename;
struct lock_file *lock = NULL;
- const char *last_dot = strrchr(key, '.');
if (config_exclusive_filename)
config_filename = xstrdup(config_exclusive_filename);
else
config_filename = git_pathdup("config");
- /*
- * Since "key" actually contains the section name and the real
- * key name separated by a dot, we have to know where the dot is.
- */
-
- if (last_dot == NULL) {
- error("key does not contain a section: %s", key);
- ret = 2;
+ ret = -git_config_parse_key(key, &store.key, &store.baselen);
+ if (ret)
goto out_free;
- }
- store.baselen = last_dot - key;
store.multi_replace = multi_replace;
- /*
- * Validate the key and while at it, lower case it for matching.
- */
- store.key = xmalloc(strlen(key) + 1);
- dot = 0;
- for (i = 0; key[i]; i++) {
- unsigned char c = key[i];
- if (c == '.')
- dot = 1;
- /* Leave the extended basename untouched.. */
- if (!dot || i > store.baselen) {
- if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
- error("invalid key: %s", key);
- free(store.key);
- ret = 1;
- goto out_free;
- }
- c = tolower(c);
- } else if (c == '\n') {
- error("invalid key (newline): %s", key);
- free(store.key);
- ret = 1;
- goto out_free;
- }
- store.key[i] = c;
- }
- store.key[i] = 0;
/*
* The lock serves a purpose in addition to locking: the new
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index d0e5546..3e79c37 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -876,11 +876,10 @@ test_expect_success 'check split_cmdline return' "
"
test_expect_success 'git -c "key=value" support' '
- test "z$(git -c name=value config name)" = zvalue &&
test "z$(git -c core.name=value config core.name)" = zvalue &&
- test "z$(git -c CamelCase=value config camelcase)" = zvalue &&
- test "z$(git -c flag config --bool flag)" = ztrue &&
- test_must_fail git -c core.name=value config name
+ test "z$(git -c foo.CamelCase=value config foo.camelcase)" = zvalue &&
+ test "z$(git -c foo.flag config --bool foo.flag)" = ztrue &&
+ test_must_fail git -c name=value config core.name
'
test_done
--
1.7.4.rc3.2.g27487
--
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