MINOR: ssl: Create HASSL_DH wrapper structure

The DH mechanism relies on DH objects that are low-level structures that
should not be used anymore starting from OpenSSLv3. With the newer
OpenSSL version, we should only use higher level EVP_PKEY objects.
Since enforcing this new logic to older versions of OpenSSL could be
dangerous (or plain impossible), we will keeptwo versions of the code
when required.
The HASSL_DH define will allow to unify some of the functions that were
created for DH use without having to add too many duplicated blocks of
code depending on the OpenSSL version.

diff --git a/include/haproxy/openssl-compat.h b/include/haproxy/openssl-compat.h
index 890e086c85fde7eac872bf91c594fa764b859736..12a8711bff7e27c46057e9c6a5d26a4345eaa012 100644 (file)
--- a/include/haproxy/openssl-compat.h
+++ b/include/haproxy/openssl-compat.h
@@ -26,6 +26,8 @@
 
 #if (OPENSSL_VERSION_NUMBER >= 0x3000000fL)
 #include <openssl/core_names.h>
+#include <openssl/decoder.h>
+#include <openssl/param_build.h>
 #endif
 
 #if defined(LIBRESSL_VERSION_NUMBER)
@@ -87,8 +89,14 @@
 #if (HA_OPENSSL_VERSION_NUMBER >= 0x3000000fL)
 #define HAVE_OSSL_PARAM
 #define MAC_CTX EVP_MAC_CTX
-#else
+#define HASSL_DH EVP_PKEY
+#define HASSL_DH_free EVP_PKEY_free
+#define HASSL_DH_up_ref EVP_PKEY_up_ref
+#else /* HA_OPENSSL_VERSION_NUMBER >= 0x3000000fL */
 #define MAC_CTX HMAC_CTX
+#define HASSL_DH DH
+#define HASSL_DH_free DH_free
+#define HASSL_DH_up_ref DH_up_ref
 #endif
 
 #if (HA_OPENSSL_VERSION_NUMBER < 0x0090800fL)