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http://issues.apache.org/bugzilla/show_bug.cgi?id=40315

           Summary: WebAppClassLoader behavior when getting resource "/"
           Product: Tomcat 5
           Version: 5.5.14
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: [EMAIL PROTECTED]


Call to class.getResourceAsStream("/") on a class loaded from webapp classpath
(e.g. from a jar in WEB-INF/lib) returns directory listing for directory from
where catalina was started. Apart from a potential security issue, this causes
inconsistency in the classloader behavior (different results depending on how
the container got started).

In our case, we use C3P0 connection pool which for some strange reason happens
to read "/" resource during initialization, and executing startup.sh from a
read-protected directory causes webapp fail to load with an NPE with the
following stack trace (only the relevant portion shown):

Caused by: java.lang.NullPointerException
        at java.util.Arrays$ArrayList.<init>(Arrays.java:2355)
        at java.util.Arrays.asList(Arrays.java:2341)
        at
sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:67)
        at
sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:161)
        at java.net.URL.openStream(URL.java:1007)
        at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1161)
        at
org.apache.catalina.loader.WebappClassLoader.getResourceAsStream(WebappClassLoader.java:1170)
...

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