On Mon, 17 Jun 2024 20:51:34 GMT, Kevin Walls <[email protected]> wrote:
>> JMX uses APIs related to the Security Mananger which are deprecated. Use of
>> AccessControlContext will be removed when Security Manager is removed.
>>
>> Until then, updates are needed to not require setting
>> -Djava.security.manager=allow to use JMX authentication.
>
> Kevin Walls has updated the pull request incrementally with one additional
> commit since the last revision:
>
> braces
Yes, maybe we are light on testing with an SM actually enabled.
AuthorizationTest is the key test here, and tests authenticated connections
with user/role names. That is passing with no SM, SM allowed, and SM enabled
with policy.
I am testing ThreadPoolAccTest.java with SM enabled with an allPermission
policy, as well as just SM allowed or not allowed. This is a good test as it
exercises the Monitor class. This still works, will add it.
Also, manual testing looks good to me:
In problem builds of jdk 23, attaching with JMX using authentication results in:
org.openjdk.kjdb.MyDebuggerException: getSubject is supported only if a
security manager is allowed
With this change, JMX attach using authentication works. A monitor role can
correctly get refusals like:
Caused by: java.lang.SecurityException: Access denied! Invalid access level for
requested MBeanServer operation.
at
com.sun.jmx.remote.security.MBeanServerFileAccessController.checkAccess(MBeanServerFileAccessController.java:348)
at
com.sun.jmx.remote.security.MBeanServerFileAccessController.checkWrite(MBeanServerFileAccessController.java:240)
at
com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:469)
at
javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1520)
...and a control role is accepted (that's JMX simple security at work).
Running the target with a SecurityManager, and attaching, I see e.g.:
org.openjdk.kjdb.MyDebuggerException: access denied
("javax.management.MBeanPermission"
"com.sun.management.internal.HotSpotThreadImpl#-[java.lang:type=Threading]"
"isInstanceOf")
...which looks correct.
Add a -Djava.security.policy=/my/all.policy
which has allPermission, and connections work OK. Removing AllPermission from
that policy, we get Exceptions again.
This looks good.
-------------
PR Comment: https://git.openjdk.org/jdk/pull/19624#issuecomment-2175801724
