[jira] [Created] (FELIX-6416) FELIX-6326 breaks JDK9+ URLClassLoader with incorrect implementation of URLs with hash

["Piotr Klimczak (Jira)" <ji...@apache.org>]

Piotr Klimczak created FELIX-6416:
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             Summary: FELIX-6326 breaks JDK9+ URLClassLoader with incorrect implementation of URLs with hash
                 Key: FELIX-6416
                 URL: https://issues.apache.org/jira/browse/FELIX-6416
             Project: Felix
          Issue Type: Bug
          Components: Framework
    Affects Versions: framework-6.0.4
         Environment: MacOS
            Reporter: Piotr Klimczak


'#' sign represents URL fragment and is not valid URL path element.

As per spec it is not allowed for it to be a part of path and instead must be URL escaped.

So for example for file in location in UNIX systems: "/Users/piotrklimczak/test#", the valid URL encoding to load it in Java is:

new File(new URL("file:///Users/piotrklimczak/test%23").toURI())

FELIX-6326 effectively allows '#' to be accepted as valid URL path element, which in turn breaks JDK9+ URLClassLoader which is using URL fragment (ref) to deal with multi-release jars.

This then breaks pax-transx-tm-narayana installation in Karaf (which uses URLClassLoader).

In my opinion FELIX-6326 should be reverted and users should be instead encoding correctly special characters in their resource paths.



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