[PATCH v2] BUILD: SSL: function "ERR_func_error_string" is deprecated in OpenSSL-3.0.0

[Ilya Shipitsin]

 let us prepare for using OpenSSL-3.0.0 in no deprecation mode
---
 include/haproxy/openssl-compat.h | 7 +++++++
 src/ssl_sock.c                   | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/haproxy/openssl-compat.h b/include/haproxy/openssl-compat.h
index 17d073d51..1b7272636 100644
--- a/include/haproxy/openssl-compat.h
+++ b/include/haproxy/openssl-compat.h
@@ -41,6 +41,13 @@
 #define OpenSSL_version_num     SSLeay
 #endif
 
+/* ERR_func_error_string is deprecated in OpenSSL-3.0.0 */
+#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
+#define HA_ERR_func_error_string(ret) "OPENSSL_internal"
+#else
+#define HA_ERR_func_error_string(ret) ERR_func_error_string(ret)
+#endif
+
 #if (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER >= 
0x2070100fL) || defined(OPENSSL_IS_BORINGSSL) || 
(!defined(LIBRESSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x10100000L))
 #define HAVE_SSL_EXTRACT_RANDOM
 #endif
diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index 8be8c6fde..a7505e5a9 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -606,7 +606,7 @@ static forceinline void ssl_sock_dump_errors(struct 
connection *conn)
                                return;
                        fprintf(stderr, "fd[%#x] OpenSSL error[0x%lx] %s: %s\n",
                                conn->handle.fd, ret,
-                               ERR_func_error_string(ret), 
ERR_reason_error_string(ret));
+                               HA_ERR_func_error_string(ret), 
ERR_reason_error_string(ret));
                }
        }
 }
-- 
2.29.2.windows.2