The function is intended to check if a user specified name
for a new reference (for remotes, branches or tags) has
a bad prefix.
Intention: Prevent users from creating tags/remotes/branches
which are named "refs" or "refs/..."
Signed-off-by: Ingo Rohloff <ingo.rohloff@xxxxxxxxxxxxxx>
---
refs.c | 30 ++++++++++++++++++++++++++++++
refs.h | 2 ++
2 files changed, 32 insertions(+)
diff --git a/refs.c b/refs.c
index 1ab0bb54d3..49e4f662df 100644
--- a/refs.c
+++ b/refs.c
@@ -321,6 +321,36 @@ int ref_exists(const char *refname)
return refs_ref_exists(get_main_ref_store(the_repository), refname);
}
+
+static int starts_with_component(const char *str, const char *prefix)
+{
+ for (; ; str++, prefix++) {
+ if (!*prefix) {
+ if (!*str || *str == '/')
+ return 1;
+ return 0;
+ } else if (*str != *prefix)
+ return 0;
+ }
+}
+
+static const char *newname_bad_prefixes[] = {
+ "refs",
+ NULL
+};
+
+int newname_has_bad_prefix(const char *refname)
+{
+ const char **p;
+ p = newname_bad_prefixes;
+ while (*p) {
+ if (starts_with_component(refname, *p))
+ return 1;
+ p++;
+ }
+ return 0;
+}
+
static int match_ref_pattern(const char *refname,
const struct string_list_item *item)
{
diff --git a/refs.h b/refs.h
index 730d05ad91..00c11ec589 100644
--- a/refs.h
+++ b/refs.h
@@ -107,6 +107,8 @@ int refs_verify_refname_available(struct ref_store *refs,
int ref_exists(const char *refname);
+int newname_has_bad_prefix(const char *refname);
+
int should_autocreate_reflog(const char *refname);
int is_branch(const char *refname);
--
2.24.0
