



#include <openssl/core.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/asn1.h>        
#include <openssl/safestack.h>   
#include "crypto/evp.h"    
#include "evp_local.h"


#define PARAM_CHECK(obj, func, errfunc)                                        \
    if (obj == NULL)                                                           \
        return 0;                                                              \
    if (obj->prov == NULL)                                                     \
        return EVP_CTRL_RET_UNSUPPORTED;                                       \
    if (obj->func == NULL) {                                                   \
        errfunc();                                                             \
        return 0;                                                              \
    }

#define PARAM_FUNC(name, func, type, err)                                      \
int name (const type *obj, OSSL_PARAM params[])                                \
{                                                                              \
    PARAM_CHECK(obj, func, err)                                                \
    return obj->func(params);                                                  \
}

#define PARAM_CTX_FUNC(name, func, type, err)                                  \
int name (const type *obj, void *algctx, OSSL_PARAM params[])                  \
{                                                                              \
    PARAM_CHECK(obj, func, err)                                                \
    return obj->func(algctx, params);                                          \
}

#define PARAM_FUNCTIONS(type,                                                  \
                        getname, getfunc,                                      \
                        getctxname, getctxfunc,                                \
                        setctxname, setctxfunc)                                \
    PARAM_FUNC(getname, getfunc, type, geterr)                                 \
    PARAM_CTX_FUNC(getctxname, getctxfunc, type, geterr)                       \
    PARAM_CTX_FUNC(setctxname, setctxfunc, type, seterr)


static void geterr(void)
{
    ERR_raise(ERR_LIB_EVP, EVP_R_CANNOT_GET_PARAMETERS);
}

static void seterr(void)
{
    ERR_raise(ERR_LIB_EVP, EVP_R_CANNOT_SET_PARAMETERS);
}

PARAM_FUNCTIONS(EVP_CIPHER,
                evp_do_ciph_getparams, get_params,
                evp_do_ciph_ctx_getparams, get_ctx_params,
                evp_do_ciph_ctx_setparams, set_ctx_params)

PARAM_FUNCTIONS(EVP_MD,
                evp_do_md_getparams, get_params,
                evp_do_md_ctx_getparams, get_ctx_params,
                evp_do_md_ctx_setparams, set_ctx_params)
