openssl: adapt to OpenSSL 1.1.0 opaque structs

* ext/openssl/extconf.rb: Check existence of accessor functions that
  don't exist in OpenSSL 0.9.8. OpenSSL 1.1.0 made most of its
  structures opaque and requires use of these accessor functions.
  [ruby-core:75225] [Feature #12324]

* ext/openssl/openssl_missing.[ch]: Implement them if missing.

* ext/openssl/ossl*.c: Use these accessor functions.

* test/openssl/test_hmac.rb: Add missing test for HMAC#reset.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55287 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 4 deletions

diff --git a/ext/openssl/ossl_ssl_session.c b/ext/openssl/ossl_ssl_session.c
index 1b6df55c..4836891d 100644
--- a/ext/openssl/ossl_ssl_session.c
+++ b/ext/openssl/ossl_ssl_session.c
@@ -76,13 +76,22 @@ static VALUE ossl_ssl_session_initialize(VALUE self, VALUE arg1)
 #if HAVE_SSL_SESSION_CMP == 0
 int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
 {
-    if (a->ssl_version != b->ssl_version ||
-	a->session_id_length != b->session_id_length)
+    unsigned int a_len;
+    const unsigned char *a_sid = SSL_SESSION_get_id(a, &a_len);
+    unsigned int b_len;
+    const unsigned char *b_sid = SSL_SESSION_get_id(b, &b_len);
+
+#if !defined(HAVE_OPAQUE_OPENSSL) /* missing SSL_SESSION_get_ssl_version() ? */
+    if (a->ssl_version != b->ssl_version)
+	return 1;
+#endif
+    if (a_len != b_len)
 	return 1;
+
 #if defined(_WIN32)
-    return memcmp(a->session_id, b->session_id, a->session_id_length);
+    return memcmp(a_sid, b_sid, a_len);
 #else
-    return CRYPTO_memcmp(a->session_id, b->session_id, a->session_id_length);
+    return CRYPTO_memcmp(a_sid, b_sid, a_len);
 #endif
 }
 #endif