mirror of https://github.com/openssl/openssl.git
82 lines
3.6 KiB
C
82 lines
3.6 KiB
C
/*
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* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Internal EVP utility functions */
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#include <openssl/core.h>
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#include <openssl/evp.h>
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#include <openssl/err.h>
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#include <openssl/asn1.h> /* evp_local.h needs it */
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#include <openssl/safestack.h> /* evp_local.h needs it */
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#include "crypto/evp.h" /* evp_local.h needs it */
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#include "evp_local.h"
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/*
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* EVP_CTRL_RET_UNSUPPORTED = -1 is the returned value from any ctrl function
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* where the control command isn't supported, and an alternative code path
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* may be chosen.
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* Since these functions are used to implement ctrl functionality, we
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* use the same value, and other callers will have to compensate.
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*/
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#define PARAM_CHECK(obj, func, errfunc) \
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if (obj == NULL) \
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return 0; \
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if (obj->prov == NULL) \
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return EVP_CTRL_RET_UNSUPPORTED; \
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if (obj->func == NULL) { \
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errfunc(); \
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return 0; \
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}
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#define PARAM_FUNC(name, func, type, err) \
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int name (const type *obj, OSSL_PARAM params[]) \
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{ \
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PARAM_CHECK(obj, func, err) \
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return obj->func(params); \
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}
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#define PARAM_CTX_FUNC(name, func, type, err) \
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int name (const type *obj, void *provctx, OSSL_PARAM params[]) \
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{ \
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PARAM_CHECK(obj, func, err) \
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return obj->func(provctx, params); \
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}
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#define PARAM_FUNCTIONS(type, \
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getname, getfunc, \
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getctxname, getctxfunc, \
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setctxname, setctxfunc) \
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PARAM_FUNC(getname, getfunc, type, geterr) \
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PARAM_CTX_FUNC(getctxname, getctxfunc, type, geterr) \
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PARAM_CTX_FUNC(setctxname, setctxfunc, type, seterr)
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/*
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* These error functions are a workaround for the error scripts, which
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* currently require that XXXerr method appears inside a function (not a macro).
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*/
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static void geterr(void)
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{
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EVPerr(0, EVP_R_CANNOT_GET_PARAMETERS);
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}
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static void seterr(void)
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{
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EVPerr(0, EVP_R_CANNOT_SET_PARAMETERS);
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}
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PARAM_FUNCTIONS(EVP_CIPHER,
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evp_do_ciph_getparams, get_params,
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evp_do_ciph_ctx_getparams, get_ctx_params,
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evp_do_ciph_ctx_setparams, set_ctx_params)
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PARAM_FUNCTIONS(EVP_MD,
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evp_do_md_getparams, get_params,
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evp_do_md_ctx_getparams, get_ctx_params,
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evp_do_md_ctx_setparams, set_ctx_params)
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