markt-asf commented on a change in pull request #333:
URL: https://github.com/apache/tomcat/pull/333#discussion_r470802517



##########
File path: java/org/apache/tomcat/util/scan/JarIndex.java
##########
@@ -0,0 +1,61 @@
+package org.apache.tomcat.util.scan;

Review comment:
       No ALv2 Header
   Why is this class in this package when it is only used in 
`org.apache.catalina.webresources`?

##########
File path: java/org/apache/catalina/webresources/JarResourceSet.java
##########
@@ -59,6 +63,36 @@ public JarResourceSet(WebResourceRoot root, String 
webAppMount, String base,
         super(root, webAppMount, base, internalPath);
     }
 
+    @Override
+    public WebResource getResource(String path, List<List<WebResourceSet>> 
allResources) {
+        JarIndex jarIndex = getJarIndex();
+        if(jarIndex==null){
+            return getResource(path);
+        }
+        String webAppMount = getWebAppMount();
+        if (path.startsWith(getWebAppMount())) {
+            String pathInJar = getInternalPath() + path.substring(
+                    webAppMount.length());
+            if (pathInJar.length() > 0 && pathInJar.charAt(0) == '/') {
+                pathInJar = pathInJar.substring(1);
+            }
+            List<String> jarFiles = jarIndex.get(pathInJar);
+            if(jarFiles!=null){

Review comment:
       Why is this here rather than in `StandardRoot` ?

##########
File path: java/org/apache/catalina/WebResourceSet.java
##########
@@ -36,6 +37,10 @@
      */
     WebResource getResource(String path);
 
+    default WebResource getResource(String path, List<List<WebResourceSet>> 
allResources){

Review comment:
       This looks wrong. A single `WebResourceSet` shouldn't need to be passed 
a reference to `allResources`.




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