crypto: expose crypto.constants.OPENSSL_IS_BORINGSSL

[codebytere]

This PR exposes a constant OPENSSL_IS_BORINGSSL. This allows knowing which crypto library is in use at the JS level - previously the only way to know was to check the version string, which would be 0.0.0 when built with BoringSSL.

This also sets the stage for adapting some of Node.js' crypto tests to run and pass with both BoringSSL and OpenSSL.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.24%. Comparing base (4edb139) to head (978897f).
Report is 31 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #58387   +/-   ##
=======================================
  Coverage   90.24%   90.24%           
=======================================
  Files         633      633           
  Lines      186860   186902   +42     
  Branches    36675    36691   +16     
=======================================
+ Hits       168623   168671   +48     
- Misses      11035    11039    +4     
+ Partials     7202     7192   -10     

Files with missing lines	Coverage Δ
src/node_constants.cc	99.71% <ø> (ø)

... and 51 files with indirect coverage changes

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[legendecas]

Should we expose this bit on process.features instead? crypto.constants object does not seem to be a good place for feature detection.

[codebytere]

@legendecas i don't feel super strongly either way but via crypto.constants is a bit more straightforward imo

[jasnell]

I'm not a big fan of redefining the existing define this way. Perhaps this could just be crypto.constants.BORINGSSL and the definition here could be:

#ifdef OPENSSL_IS_BORINGSSL
  constexpr auto BORINGSSL = 1;
#else
  constexpr auto BORINGSSL = 0;
#endif
  NODE_DEFINE_CONSTANT(target, BORINGSSL);

[jasnell]

Alternatively, I do wonder if this is better exposed via process.config or process.features. We do have the existing process.config.openssl_is_fips and process.config.openssl_quic flags in process.config.

ha... I missed the previous comment about this ;-)