This patch updates the check_refname_component logic in order to allow for
a less strict refspec format in regards to REFNAME_REFSPEC_PATTERN.
Previously the '*' could only replace a single full component, and could
not replace arbitrary text. Now, refs such as `foo/bar*:foo/bar*` will be
accepted. This allows for somewhat more flexibility in references and does
not break any current users. The ref matching code already allows this but
the check_refname_format did not.
This patch also streamlines the code by making this new check part of
check_refname_component instead of checking after we error during
check_refname_format, which makes more sense with how we check other
issues in refname components.
Signed-off-by: Jacob Keller <jacob.keller@xxxxxxxxx>
Cc: Daniel Barkalow <barkalow@xxxxxxxxxxxxxxxxxxxxx>
Cc: Junio C Hamano <gitster@xxxxxxxxx>
---
Documentation/git-check-ref-format.txt | 4 ++--
refs.c | 39 +++++++++++++++++++---------------
refs.h | 4 ++--
3 files changed, 26 insertions(+), 21 deletions(-)
diff --git a/Documentation/git-check-ref-format.txt b/Documentation/git-check-ref-format.txt
index fc02959..9044dfa 100644
--- a/Documentation/git-check-ref-format.txt
+++ b/Documentation/git-check-ref-format.txt
@@ -94,8 +94,8 @@ OPTIONS
Interpret <refname> as a reference name pattern for a refspec
(as used with remote repositories). If this option is
enabled, <refname> is allowed to contain a single `*`
- in place of a one full pathname component (e.g.,
- `foo/*/bar` but not `foo/bar*`).
+ in the refspec (e.g., `foo/bar*/baz` or `foo/bar*baz/`
+ but not `foo/bar*/baz*`).
--normalize::
Normalize 'refname' by removing any leading slash (`/`)
diff --git a/refs.c b/refs.c
index 7ac05cf..8702644 100644
--- a/refs.c
+++ b/refs.c
@@ -20,11 +20,12 @@ struct ref_lock {
* 2: ., look for a preceding . to reject .. in refs
* 3: {, look for a preceding @ to reject @{ in refs
* 4: A bad character: ASCII control characters, "~", "^", ":" or SP
+ * 5: check for patterns to reject unless REFNAME_REFSPEC_PATTERN is set
*/
static unsigned char refname_disposition[256] = {
1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 2, 1,
+ 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0,
@@ -71,11 +72,13 @@ static unsigned char refname_disposition[256] = {
* - any path component of it begins with ".", or
* - it has double dots "..", or
* - it has ASCII control character, "~", "^", ":" or SP, anywhere, or
- * - it ends with a "/".
- * - it ends with ".lock"
- * - it contains a "\" (backslash)
+ * - it ends with a "/", or
+ * - it ends with ".lock", or
+ * - it contains a "\" (backslash), or
+ * - it contains a "@{" portion, or
+ * - it contains a '*' unless REFNAME_REFSPEC_PATTERN is set
*/
-static int check_refname_component(const char *refname, int flags)
+static int check_refname_component(const char *refname, int *flags)
{
const char *cp;
char last = '\0';
@@ -96,6 +99,16 @@ static int check_refname_component(const char *refname, int flags)
break;
case 4:
return -1;
+ case 5:
+ if (!(*flags & REFNAME_REFSPEC_PATTERN))
+ return -1; /* refspec can't be a pattern */
+
+ /*
+ * Unset the pattern flag so that we only accept a single glob for
+ * the entire refspec.
+ */
+ *flags &= ~ REFNAME_REFSPEC_PATTERN;
+ break;
}
last = ch;
}
@@ -120,18 +133,10 @@ int check_refname_format(const char *refname, int flags)
while (1) {
/* We are at the start of a path component. */
- component_len = check_refname_component(refname, flags);
- if (component_len <= 0) {
- if ((flags & REFNAME_REFSPEC_PATTERN) &&
- refname[0] == '*' &&
- (refname[1] == '\0' || refname[1] == '/')) {
- /* Accept one wildcard as a full refname component. */
- flags &= ~REFNAME_REFSPEC_PATTERN;
- component_len = 1;
- } else {
- return -1;
- }
- }
+ component_len = check_refname_component(refname, &flags);
+ if (component_len <= 0)
+ return -1;
+
component_count++;
if (refname[component_len] == '\0')
break;
diff --git a/refs.h b/refs.h
index 8c3d433..1fd1272 100644
--- a/refs.h
+++ b/refs.h
@@ -224,8 +224,8 @@ extern int for_each_reflog(each_ref_fn, void *);
* to the rules described in Documentation/git-check-ref-format.txt.
* If REFNAME_ALLOW_ONELEVEL is set in flags, then accept one-level
* reference names. If REFNAME_REFSPEC_PATTERN is set in flags, then
- * allow a "*" wildcard character in place of one of the name
- * components. No leading or repeated slashes are accepted.
+ * allow a single "*" wildcard character in the refspec. No leading or
+ * repeated slashes are accepted.
*/
extern int check_refname_format(const char *refname, int flags);
--
1.9.4.msysgit.2
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