OPENSSL_LOAD_BUILTIN_MOD(3) Library Functions ManualOPENSSL_LOAD_BUILTIN_MOD(3)
NAME
OPENSSL_load_builtin_modules, ASN1_add_oid_module, ENGINE_add_conf_module — add standard configuration modules
SYNOPSIS
#include <openssl/conf.h>
void
OPENSSL_load_builtin_modules(void);
void
ASN1_add_oid_module(void);
void
ENGINE_add_conf_module(void);
DESCRIPTION
The function OPENSSL_load_builtin_modules() adds all the standard OpenSSL configuration modules to the internal list. They can then be used by the OpenSSL configuration code.
ASN1_add_oid_module() adds just the ASN.1 OBJECT module.
ENGINE_add_conf_module() adds just the ENGINE configuration module.
If the simple configuration function OPENSSL_config(3) is called then OPENSSL_load_builtin_modules() is called automatically.
Applications which use configuration functions like CONF_modules_load_file(3) directly need to call OPENSSL_load_builtin_modules() themselves before any other configuration code.
Applications should call OPENSSL_config(3) or OPENSSL_load_builtin_modules() to load all configuration modules instead of adding modules selectively: otherwise functionality may be missing from the application when new modules are added.
SEE ALSO
CONF_modules_load_file(3), OPENSSL_config(3)
HISTORY
These functions first appeared in OpenSSL 0.9.7 and have been available since OpenBSD 3.2. GNU June 14, 2019 OPENSSL_LOAD_BUILTIN_MODULES(3)