RFR: 8361711: Add library name configurability to PKCS11Test.java [v2]

[Thomas Fitzsimmons]

On Thu, 28 Aug 2025 23:54:42 GMT, Thomas Fitzsimmons <duke at openjdk.org> wrote:

>> Perhaps check the existence of the file and error out with the config file and its path if the check fails, this way, it's crystal clear.
>
> Thank you for reviewing.
> 
>> Hmm, I find it somewhat obscure that the config variant property changes the value of the config file name.
> 
> Yes, I see your point.
> 
>> With this new config variant property, it assumes that the confg file name has a "." which is probably true most if not all times.
> 
> The regular expression supports appending to a file without a ".":
> 
> 
> $ jshell -q
> jshell> "kryoptic".replaceFirst("(\.[^\.]*)?$", "-" + "sensitive" + "$1");
> $1 ==> "kryoptic-sensitive"
> 
> 
> I should have added this case to the comment you mentioned above, will do in the expanded comment you requested.
> 
>> We should document all these properties so it's clear their precedence as well as the assumptions/implications. All these security can be set independently, right? It's a bit strange that you set the CUSTOM_P11_CONFIG NAME and then setting the config variant property would actually changes the config file to a different name.
> 
> Yes, conceptually I am treating file pairs like `p11-nss.txt` and `p11-nss-sensitive.txt` (and `p11-kryoptic.txt`, `p11-kryoptic-sensitive.txt`) as variants of the same configuration.  When `CUSTOM_P11_CONFIG_VARIANT` is set, `CUSTOM_P11_CONFIG_NAME`'s meaning becomes something like "base configuration file name".
> 
> Given the current test suite, and how I am specifying the use of Kryoptic, I wouldn't expect both `CUSTOM_P11_CONFIG_VARIANT` and `CUSTOM_P11_CONFIG_NAME` (or `CUSTOM_P11_CONFIG`) to be specified by the user at the same time.  `CUSTOM_P11_CONFIG_VARIANT` is meant for hard-coding in tests that invoke the test VM separately in sensitive and normal modes.
> 
>> Perhaps check the existence of the file and error out with the config file and its path if the check fails, this way, it's crystal clear.
> 
> OK, I can do that.  I will add a `/** ... */` block above `getNssConfig`.  These two changes will hopefully reduce the weirdness of the `CUSTOM_P11_CONFIG_NAME`/`CUSTOM_P11_CONFIG_VARIANT` combination.  I will also document the existing `CUSTOM_P11_CONFIG_NAME` versus `CUSTOM_P11_CONFIG` precedence since that might also be surprising when both are set.

Done.  See what you think.  I am still open to other options.  One idea I played around with was adding a `CONFIG_P11_CONFIG_BASE_NAME` that is just part of the file name, say `p11-nss` by default.  Then in `getNssConfig` the file name could be built from the base and variant strings, instead of by changing the name.  Conceptually that might be clearer but I think it would be a more invasive change given that the existing code deals with file names.  And, having experimented with it, I think the new exception you suggested will make it fairly obvious what to fix if someone hits a missing configuration file.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26325#discussion_r2311670763