tree 206827efe503c074d481ba7c688c93a216bfe7ac
parent ae1c1a482588ab9b6c5f97b8663cdc50ac2444dd
author David Benjamin <davidben@google.com> 1708224658 -0500
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1708966965 +0000

Unexport i2d, d2i, and ASN1_ITEM for X.509 interior types

Many of the extension types are not the extensions themselves, but the
interious types used in various subfields. In preparation for when we
rewrite these parsers with <openssl/bytestring.h>, having fewer of these
means fewer compatibility functions to bridge the calling conventions.

We do still need new/free functions, so that callers can construct
extensions themselves. While I'm here, go ahead and expand the macros
and document.

(Top-level extension types need ASN1_ITEMs for X509V3_METHOD, and
d2i/i2d functions for callers that wish to parse and serialize. But
there's no real need to do this for the individual fields.)

Update-Note: Some interior ASN.1 types no longer have d2i and i2d
functions or ASN1_ITEMs. I checked code search and no one was using any
of these. We can restore them as needed.

Bug: 547
Change-Id: I0b2840bf4aea2212a757ce39b4918c8742043725
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/66389
Reviewed-by: Bob Beck <bbe@google.com>
Commit-Queue: David Benjamin <davidben@google.com>