<AWT Dev> Reviewer needed - fix for regression test java/awt/Insets/WindowWithWarningTest/WindowWithWarningTest

Anthony Petrov anthony.petrov at oracle.com
Thu Dec 2 05:26:18 PST 2010

Hi Pavel,

On 12/02/2010 03:26 PM, Pavel Tisnovsky wrote:
>>>> Could you please explain benefits of a separate .policy file over the
>>>> current approach of setting the security manager directly in the test
>>>> code?
>>> when the test calls System.setSecurityManager( new SecurityManager()
>>> {...} ) then the new security manager is installed, but this kind of
>>> security manager deny the AWT robot because it is the standard behaviour
>>> of applets (users usually don't want the applet to control theirs mouse
>>> and keyboard).
>> By default there's no any security policy present, and as such the
>> default implementation of the SecurityManager permits everything. We
>> override the checkTopLevelWindow() specifically to make AWT think
>> there's no toplevelwindow permission present. However, all the rest of
>> the permissions (including the AWT robot one) must be granted.
>> If that is not the case, I believe your testing environment picks up
>> some customized security policy which disallows everything by default.
>> Could you verify that please?
> Hi Anthony,
> It seems that my testing environment (its patched JTreg harness 4.0 from
> IcedTea6) uses restricting security manager for test which are started
> as applets, but only after I explicitly install the manager in the test
> itself.
> I tried the following: the test is still started as applet (using html
> file containing JTreg tags and options) but I simplified it to just four
> lines:
> System.out.println(System.getSecurityManager());
> System.setSecurityManager(new SecurityManager());
> System.out.println(System.getSecurityManager());
> System.getSecurityManager().checkPermission(new
> AWTPermission("createRobot"));
> Here are result, it's copy & paste from .jtr file generated by JTreg
> harness with added comments which begins and ends with ***:
> ----------messages:(3/142)----------
> command: applet WindowWithWarningTest.html
> reason: User specified action: run applet WindowWithWarningTest.html
> elapsed time (seconds): 0.59
> ----------System.out:(2/40)----------
> *** the first line of test: security manager is not installed yet ***
> null
> *** the third line of test: now the security manager is installed ***
> java.lang.SecurityManager at 77f297e7
> *** statement on fourth line throws exception - it's not possible to
> create AWT robot after the security manager is installed ***
> ----------System.err:(8/650)----------
> java.security.AccessControlException: access denied
> (java.awt.AWTPermission crea        at
> java.security.AccessControlContext.checkPermission(AccessControlConte
>         at
> java.security.AccessController.checkPermission(AccessController.java:
>      at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
>         at WindowWithWarningTest.start(WindowWithWarningTest.java:98)
>         at
> com.sun.javatest.regtest.AppletWrapper$AppletRunnable.run(AppletWrapp
>         at java.lang.Thread.run(Thread.java:636)
> STATUS:Failed.Applet thread threw exception:
> java.security.AccessControlExceptio
> result: Failed. Execution failed: Applet thread threw exception:
> java.security.A

Looks like this is a problem with your patched IcedTea jtreg harness 
rather than with the test itself then.

best regards,

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