RFR: 8267485: Remove the dependency on SecurityManager in JceSecurityManager.java [v4]

[Mandy Chung]

On Fri, 4 Jun 2021 10:14:21 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

>> src/java.base/share/classes/javax/crypto/JceSecurityManager.java line 109:
>> 
>>> 107:         @SuppressWarnings("removal")
>>> 108:         List<StackFrame> stack =
>>> 109:                 AccessController.doPrivileged(pa).walk(Stream::toList);
>> 
>> You can replace line 108-125 with something like this: 
>> 
>> StackWalker walker = AccessController.doPrivileged(pa);
>> Optional<URL> callerCodeBase = walker.walk(s -> {
>>     s.map(f -> JceSecurity.getCodeBase(f.getDeclaringClass()))
>>       .findFirst();
>> });
>
> @mlchung Maybe there should be a `.filter(cb -> cb != null)` inserted before `.findFirst()`?

Daniel is right and it needs the filter to find the first non-null code base.

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PR: https://git.openjdk.java.net/jdk/pull/4150