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-rw-r--r--src/shared/import-util.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/shared/import-util.c b/src/shared/import-util.c
index 660d92ac5d..001a8a37e8 100644
--- a/src/shared/import-util.c
+++ b/src/shared/import-util.c
@@ -150,6 +150,27 @@ int raw_strip_suffixes(const char *p, char **ret) {
return 0;
}
+bool dkr_digest_is_valid(const char *digest) {
+ /* 7 chars for prefix, 64 chars for the digest itself */
+ if (strlen(digest) != 71)
+ return false;
+
+ return startswith(digest, "sha256:") && in_charset(digest + 7, "0123456789abcdef");
+}
+
+bool dkr_ref_is_valid(const char *ref) {
+ const char *colon;
+
+ if (isempty(ref))
+ return false;
+
+ colon = strchr(ref, ':');
+ if (!colon)
+ return filename_is_valid(ref);
+
+ return dkr_digest_is_valid(ref);
+}
+
bool dkr_name_is_valid(const char *name) {
const char *slash, *p;