1 files changed, 17 insertions, 0 deletions
diff --git a/src/sysupdate/sysupdate-util.c b/src/sysupdate/sysupdate-util.c
new file mode 100644
index 0000000..c7a2301
--- /dev/null
+++ b/src/sysupdate/sysupdate-util.c
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "path-util.h"
+#include "sysupdate-util.h"
+
+bool version_is_valid(const char *s) {
+        if (isempty(s))
+                return false;
+
+        if (!filename_is_valid(s))
+                return false;
+
+        if (!in_charset(s, ALPHANUMERICAL ".,_-+"))
+                return false;
+
+        return true;
+}