return early if jar manifest has no sections

Signed-off-by: AdamKorcz <adam@adalogics.com>
sassoftware · Jul 26, 2023 · 535f0ec · 535f0ec
1 parent 7c03f01
commit 535f0ec
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/signjar/manifest.go b/lib/signjar/manifest.go
@@ -47,6 +47,9 @@ func ParseManifest(manifest []byte) (files *FilesMap, err error) {
 	if err != nil {
 		return nil, err
 	}
+	if len(sections) == 0 {
+		return nil, errors.New("manifest has no sections")
+	}
 	files = &FilesMap{
 		Order: make([]string, 0, len(sections)-1),
 		Files: make(map[string]http.Header, len(sections)-1),