From 99918e07476ab0a3c92b772af7f6cadc13f8268c Mon Sep 17 00:00:00 2001
From: Alexander Jung <alex@unikraft.io>
Date: Wed, 21 Feb 2024 11:34:34 +0100
Subject: [PATCH] feat(oci): Introduce lightweight name check

For offline checks, a simple check of the naming format can help
determine whether the provided input source is valid.

Signed-off-by: Alexander Jung <alex@unikraft.io>
---
 oci/manager.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/oci/manager.go b/oci/manager.go
index 6913c6fcd..f9ca65aff 100644
--- a/oci/manager.go
+++ b/oci/manager.go
@@ -682,6 +682,15 @@ func (manager *ociManager) IsCompatible(ctx context.Context, source string, qopt
 		return nil, false, err
 	}
 
+	isFullyQualifiedNameReference := func(source string) bool {
+		_, err := name.ParseReference(source)
+		if err != nil && errors.Is(err, &name.ErrBadName{}) {
+			return false
+		}
+
+		return true
+	}
+
 	query := packmanager.NewQuery(qopts...)
 
 	// Check if the provided source is a fully qualified OCI reference
@@ -788,6 +797,7 @@ func (manager *ociManager) IsCompatible(ctx context.Context, source string, qopt
 
 	checks := []func(string) bool{
 		isLocalImage,
+		isFullyQualifiedNameReference,
 	}
 
 	if query.Remote() {