CODEWITHSUNDEEP
javasecurityjava-web-start
dprice
dprice

Reputation: 11

Java.util.PropertyPermission Failure

I'm trying to run a simple Java Web Start App. I wrote my code in NetBeans and used the jar exported for my .jnlp file. Eventually I plan on having the code read from the windows registry and use that data, but for now all I'm doing is creating a String then calling System.out.println(strName); I am self signing the jar using the strategy outlined here. When I download and run the .jnlp, I get the following exception:

java.security.AccessControlException: access denied ("java.util.PropertyPermission" "jna.debug_load" "read")
    at java.security.AccessControlContext.checkPermission(Unknown Source)
    at java.security.AccessController.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkPermission(Unknown Source)
    at com.sun.javaws.security.JavaWebStartSecurity.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
    at java.lang.System.getProperty(Unknown Source)
    at java.lang.Boolean.getBoolean(Unknown Source)
    at com.sun.jna.Native.<clinit>(Native.java:95)
    at com.sun.jna.Pointer.<clinit>(Pointer.java:41)
    at com.sun.jna.platform.win32.WinReg$HKEY.<init>(WinReg.java:32)
    at com.sun.jna.platform.win32.WinReg.<clinit>(WinReg.java:61)
    at cvbxtractor.CvbXtractor.main(CvbXtractor.java:17)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.sun.javaws.Launcher.executeApplication(Unknown Source)
    at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
    at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
    at com.sun.javaws.Launcher.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

I have tried adding permission java.util.PropertyPermission "jna.debug_load", "read"; to my java.policy file, I have tried signing and resigning any jars it might be using, and made sure my .jnlp has the 

 <security>
      <all-permissions/>
 </security>

line in it, but none have helped. I'm sure I'm just missing some security toggle somewhere, if this is easy please forgive me, this is my first Java Web Start App.

Upvotes: 1

Views: 631

Answers (1)

Jeff Gran
Jeff Gran

Reputation: 1595

As of java 7u45, you can't read system properties when running from a jnlp. Oracle basically ruined javaws. If you're writing a new app, I would recommend staying away from java webstart. It's broken and they just keep making it worse by forcing security updates that break your application.

That being said, one partial workaround to this problem is to prefix all of your properties with jnlp.. So, you'd have to rename your property jnlp.jna.debug_load. If it's a property from a third party library/jar you're using, you're out of luck.

Upvotes: 2

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