Coverage Report

Created: 2025-06-13 06:36

/src/openssl/crypto/evp/evp_utils.c
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/*
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 * Copyright 2019-2021 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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0
        errfunc();                                                             \
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0
        return 0;                                                              \
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0
    }
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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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}
evp_do_ciph_getparams
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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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}
evp_do_md_getparams
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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 *algctx, OSSL_PARAM params[])                  \
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{                                                                              \
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    PARAM_CHECK(obj, func, err)                                                \
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    return obj->func(algctx, params);                                          \
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}
evp_do_ciph_ctx_getparams
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int name (const type *obj, void *algctx, OSSL_PARAM params[])                  \
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{                                                                              \
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    PARAM_CHECK(obj, func, err)                                                \
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    return obj->func(algctx, params);                                          \
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}
evp_do_ciph_ctx_setparams
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int name (const type *obj, void *algctx, OSSL_PARAM params[])                  \
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{                                                                              \
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    PARAM_CHECK(obj, func, err)                                                \
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    return obj->func(algctx, params);                                          \
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}
Unexecuted instantiation: evp_do_md_ctx_getparams
Unexecuted instantiation: evp_do_md_ctx_setparams
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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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0
{
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0
    ERR_raise(ERR_LIB_EVP, EVP_R_CANNOT_GET_PARAMETERS);
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0
}
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static void seterr(void)
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0
{
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0
    ERR_raise(ERR_LIB_EVP, EVP_R_CANNOT_SET_PARAMETERS);
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0
}
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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)