Added BIGNUM & ERR functions & tests

[tedjpoole]

Also:

• Added BoringSSL's unit tests for RAND_bytes()
• Updated BoringSSL to match envoy release/v1.24
• Added mem.c

Signed-off-by: Ted Poole tpoole@redhat.com

[pfl]

When doing 'cmake ..' I get output saying

...
Copied openssl/x509_vfy.h
Copied openssl/x509v3.h
2 out of 2 hunks FAILED -- saving rejects to file /envoy-openssl/bssl-compat/source/crypto/bytestring/cbs.c.rej
Copied crypto/bytestring/cbs.c (patched)
Copied crypto/bytestring/cbb.c
Copied crypto/bytestring/internal.h
3 out of 3 hunks FAILED -- saving rejects to file /envoy-openssl/bssl-compat/source/crypto/asn1/a_int.c.rej
Copied crypto/asn1/a_int.c (patched)
2 out of 2 hunks FAILED -- saving rejects to file /envoy-openssl/bssl-compat/source/crypto/internal.h.rej
Copied crypto/internal.h (patched)
...

Are these supposed to fail?

[tedjpoole]

No those failures are not expected. It will probably be due to small differences in the OpenSSL headers between versions. The patching mechanism probably needs some more thought to deal with this

[pfl]

No those failures are not expected. It will probably be due to small differences in the OpenSSL headers between versions. The patching mechanism probably needs some more thought to deal with this

I had the wrong version of the boringssl submodule checked out. Works fine now.