[ruby/openssl] ssl: temporarily remove SSLContext#add_certificate_chain_file

Let's revert the changes for now, as it cannot be included in the 2.2.0
release.

My comment on #257:

> A blocker is OpenSSL::SSL::SSLContext#add_certificate_chain_file. It
> has a pending change and I don't want to include it in an incomplete
> state.
>
> The initial implementation in commit 46e4bdba40c5 was not really
> useful. The issue is described in #305. #309 extended it
> to take the corresponding private key together. However, the new
> implementation was incompatible on Windows and was reverted by #320 to
> the initial one.
>
> (The prerequisite to implement it in) an alternative way is #288, and
> it's still cooking.

This effectively reverts the following commits:

 - dacd08937ccd ("ssl: suppress test failure with SSLContext#add_certificate_chain_file", 2020-03-09)
 - 46e4bdba40c5 ("Add support for SSL_CTX_use_certificate_chain_file. Fixes #254.", 2019-06-13)

https://github.com/ruby/openssl/commit/ea925619a9

1 files changed, 0 insertions, 16 deletions

diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c
index 337ce5d64d..fe2e85b866 100644
--- a/ext/openssl/ossl_ssl.c
+++ b/ext/openssl/ossl_ssl.c
@@ -1329,21 +1329,6 @@ ossl_sslctx_add_certificate(int argc, VALUE *argv, VALUE self)
     return self;
 }
 
-static VALUE
-ossl_sslctx_add_certificate_chain_file(VALUE self, VALUE path)
-{
-    SSL_CTX *ctx;
-    int ret;
-
-    GetSSLCTX(self, ctx);
-    StringValueCStr(path);
-    ret = SSL_CTX_use_certificate_chain_file(ctx, RSTRING_PTR(path));
-    if (ret != 1)
-        ossl_raise(eSSLError, "SSL_CTX_use_certificate_chain_file");
-
-    return Qtrue;
-}
-
 /*
  *  call-seq:
  *     ctx.session_add(session) -> true | false
@@ -2795,7 +2780,6 @@ Init_ossl_ssl(void)
     rb_define_method(cSSLContext, "enable_fallback_scsv", ossl_sslctx_enable_fallback_scsv, 0);
 #endif
     rb_define_method(cSSLContext, "add_certificate", ossl_sslctx_add_certificate, -1);
-    rb_define_method(cSSLContext, "add_certificate_chain_file", ossl_sslctx_add_certificate_chain_file, 1);
 
     rb_define_method(cSSLContext, "setup", ossl_sslctx_setup, 0);
     rb_define_alias(cSSLContext, "freeze", "setup");