common.h

/*  Part of SWI-Prolog

    Author:        Jan Wielemaker
    E-mail:        jan@swi-prolog.org
    WWW:           http://www.swi-prolog.org
    Copyright (c)  2024, SWI-Prolog Solutions b.v.
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    are met:

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       notice, this list of conditions and the following disclaimer.

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       notice, this list of conditions and the following disclaimer in
       the documentation and/or other materials provided with the
       distribution.

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    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*/

#ifndef SSL4PL_COMMON_H_INCLUDED
#define SSL4PL_COMMON_H_INCLUDED 1

/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Unfortunately the OpenSSL/LibreSSL API is  not very stable.  This file
generalizes  a   few  things   to  give  them   a  shorter   and  more
understandable  name.   Ideally, all  these  should  be CMake  feature
tests.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

/* TBD: Should be checked by Cmake */
#if defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x3080000fL
#undef HAVE_X509_CHECK_HOST		/* seems broken. must investigate */
#endif

#if defined HAVE_EVP_PKEY_NEW && \
    defined HAVE_EVP_PKEY_FREE && \
    defined HAVE_EVP_PKEY_GET_BN_PARAM && \
    defined HAVE_EVP_PKEY_GET_OCTET_STRING_PARAM && \
    defined HAVE_EVP_PKEY_GET_SIZE && \
    defined HAVE_EVP_PKEY_DECRYPT && \
    defined HAVE_EVP_PKEY_ENCRYPT && \
    defined HAVE_EVP_PKEY_SIGN && \
    defined HAVE_EVP_PKEY_VERIFY && \
    defined HAVE_EVP_PKEY_Q_KEYGEN && \
    defined HAVE_OSSL_PARAM_CONSTRUCT_UTF8_STRING && \
    defined HAVE_BN_CHECK_PRIME && defined HAVE_OSSL_PARAM_BLD_NEW
#define USE_EVP_API 1
#endif

#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
    (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x3050000fL)
#define SSL_API_0 1
#endif

#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
#define SSL_API_0_OR_LIBRESSL 1
#endif

#endif /*SSL4PL_COMMON_H_INCLUDED*/