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authorJunio C Hamano <gitster@pobox.com>2011-02-28 05:58:31 (GMT)
committerJunio C Hamano <gitster@pobox.com>2011-02-28 05:58:31 (GMT)
commitfbfeeaf29480a3299fa6c3349b7a8c1b147c18c5 (patch)
tree4e7060b4640e33114131dff5c8df78dc60470ef9
parentecd75ddb6f3fb7f2424d5852bcb4f50896cdcc9d (diff)
parent2169ddc056b56deba701cbbba28cdaf2e9821224 (diff)
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Merge branch 'lp/config-vername-check'
* lp/config-vername-check: Disallow empty section and variable names Sanity-check config variable names
-rw-r--r--builtin/config.c27
-rw-r--r--cache.h1
-rw-r--r--config.c111
-rwxr-xr-xt/t1300-repo-config.sh22
4 files changed, 111 insertions, 50 deletions
diff --git a/builtin/config.c b/builtin/config.c
index e27415d..76be0b7 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;
@@ -167,18 +166,32 @@ static int get_value(const char *key_, const char *regex_)
system_wide = git_etc_gitconfig();
}
- 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;
+
+ /*
+ * NEEDSWORK: this naive pattern lowercasing obviously does not
+ * work for more complex patterns like "^[^.]*Foo.*bar".
+ * Perhaps we should deprecate this altogether someday.
+ */
+
+ 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);
+
key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
if (regcomp(key_regexp, key, REG_EXTENDED)) {
fprintf(stderr, "Invalid key pattern: %s\n", key_);
+ free(key);
goto free_strings;
}
+ } else {
+ if (git_config_parse_key(key_, &key, NULL))
+ goto free_strings;
}
if (regex_) {
diff --git a/cache.h b/cache.h
index 5cc2f89..79723aa 100644
--- a/cache.h
+++ b/cache.h
@@ -1014,6 +1014,7 @@ 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..d5bb862 100644
--- a/config.c
+++ b/config.c
@@ -1099,6 +1099,75 @@ int git_config_set(const char *key, const char *value)
}
/*
+ * 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
+ * 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 || last_dot == key) {
+ error("key does not contain a section: %s", key);
+ return -2;
+ }
+
+ if (!last_dot[1]) {
+ error("key does not contain variable name: %s", key);
+ return -2;
+ }
+
+ baselen = last_dot - key;
+ if (baselen_)
+ *baselen_ = baselen;
+
+ /*
+ * 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 > 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;
+ }
+ (*store_key)[i] = c;
+ }
+ (*store_key)[i] = 0;
+
+ return 0;
+
+out_free_ret_1:
+ 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.
* if multi_replace==0, nothing, or only one matching key/value is replaced,
@@ -1124,59 +1193,23 @@ 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;
+ /* parse-key returns negative; flip the sign to feed exit(3) */
+ ret = 0 - 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..53fb822 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -876,11 +876,25 @@ 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_expect_success 'key sanity-checking' '
+ test_must_fail git config foo=bar &&
+ test_must_fail git config foo=.bar &&
+ test_must_fail git config foo.ba=r &&
+ test_must_fail git config foo.1bar &&
+ test_must_fail git config foo."ba
+ z".bar &&
+ test_must_fail git config . false &&
+ test_must_fail git config .foo false &&
+ test_must_fail git config foo. false &&
+ test_must_fail git config .foo. false &&
+ git config foo.bar true &&
+ git config foo."ba =z".bar false
'
test_done