bail out early in case we are not dealing with a .zip file
diff --git a/src/main/java/org/apache/sling/installer/factory/packages/impl/PackageTransformer.java b/src/main/java/org/apache/sling/installer/factory/packages/impl/PackageTransformer.java
index 1d306ee..344b930 100644
--- a/src/main/java/org/apache/sling/installer/factory/packages/impl/PackageTransformer.java
+++ b/src/main/java/org/apache/sling/installer/factory/packages/impl/PackageTransformer.java
@@ -114,6 +114,9 @@
* @param resource The resource
* @return {@code null} if not a content package, a result otherwise */
private TransformationResult[] checkForPackage(final RegisteredResource resource) {
+ if (!resource.getURL().endsWith(".zip")) {
+ return null;
+ }
// first check if this is a zip archive
try (final ZipInputStream zin = new ZipInputStream(new BufferedInputStream(resource.getInputStream()))) {
if (zin.getNextEntry() == null) {
