/*

 * Copyright 2025 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

/* clang-format off */

/* clang-format on */

#include <string.h>

#include <openssl/core_dispatch.h>

#include <openssl/core_names.h>

#include <openssl/proverr.h>

#include "crypto/types.h"

#include "internal/cryptlib.h"

#include "internal/skey.h"

#include "prov/provider_ctx.h"

#include "prov/providercommon.h"

#include "prov/implementations.h"

#include "prov/skeymgmt_lcl.h"

void generic_free(void *keydata)

{

    PROV_SKEY *generic = keydata;

    if (generic == NULL)

        return;

    OPENSSL_clear_free(generic->data, generic->length);

    OPENSSL_free(generic);

}

/* clang-format off */

/* Machine generated by util/perl/OpenSSL/paramnames.pm */

#ifndef generic_skey_import_list

static const OSSL_PARAM generic_skey_import_list[] = {

    OSSL_PARAM_octet_string(OSSL_SKEY_PARAM_RAW_BYTES, NULL, 0),

    OSSL_PARAM_END

};

#endif

#ifndef generic_skey_import_st

struct generic_skey_import_st {

    OSSL_PARAM *raw_bytes;

};

#endif

#ifndef generic_skey_import_decoder

static int generic_skey_import_decoder

    (const OSSL_PARAM *p, struct generic_skey_import_st *r)

{

    const char *s;

    memset(r, 0, sizeof(*r));

    if (p != NULL)

        for (; (s = p->key) != NULL; p++)

            if (ossl_likely(strcmp("raw-bytes", s + 0) == 0)) {

                /* OSSL_SKEY_PARAM_RAW_BYTES */

                if (ossl_unlikely(r->raw_bytes != NULL)) {

                    ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,

                                   "param %s is repeated", s);

                    return 0;

                }

                r->raw_bytes = (OSSL_PARAM *)p;

            }

    return 1;

}

#endif

/* End of machine generated */

/* clang-format on */

void *generic_import(void *provctx, int selection, const OSSL_PARAM params[])

{

    OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);

    struct generic_skey_import_st p;

    PROV_SKEY *generic = NULL;

    int ok = 0;

    if (!ossl_prov_is_running())

        return NULL;

    if ((selection & OSSL_SKEYMGMT_SELECT_SECRET_KEY) == 0)

        return NULL;

    if (!generic_skey_import_decoder(params, &p))

        return NULL;

    if (p.raw_bytes == NULL

        || p.raw_bytes->data_type != OSSL_PARAM_OCTET_STRING)

        return NULL;

    generic = OPENSSL_zalloc(sizeof(PROV_SKEY));

    if (generic == NULL)

        return NULL;

    generic->libctx = libctx;

    generic->type = SKEY_TYPE_GENERIC;

    if ((generic->data = OPENSSL_memdup(p.raw_bytes->data,

             p.raw_bytes->data_size))

        == NULL)

        goto end;

    generic->length = p.raw_bytes->data_size;

    ok = 1;

end:

    if (ok == 0) {

        generic_free(generic);

        generic = NULL;

    }

    return generic;

}

const OSSL_PARAM *generic_imp_settable_params(void *provctx)

{

    return generic_skey_import_list;

}

int generic_export(void *keydata, int selection,

    OSSL_CALLBACK *param_callback, void *cbarg)

{

    PROV_SKEY *gen = keydata;

    OSSL_PARAM params[2];

    if (!ossl_prov_is_running() || gen == NULL)

        return 0;

    /* If we use generic SKEYMGMT as a "base class", we shouldn't check the type */

    if ((selection & OSSL_SKEYMGMT_SELECT_SECRET_KEY) == 0)

        return 0;

    params[0] = OSSL_PARAM_construct_octet_string(OSSL_SKEY_PARAM_RAW_BYTES,

        gen->data, gen->length);

    params[1] = OSSL_PARAM_construct_end();

    return param_callback(params, cbarg);

}

const OSSL_DISPATCH ossl_generic_skeymgmt_functions[] = {

    { OSSL_FUNC_SKEYMGMT_FREE, (void (*)(void))generic_free },

    { OSSL_FUNC_SKEYMGMT_IMPORT, (void (*)(void))generic_import },

    { OSSL_FUNC_SKEYMGMT_EXPORT, (void (*)(void))generic_export },

    { OSSL_FUNC_SKEYMGMT_IMP_SETTABLE_PARAMS,

        (void (*)(void))generic_imp_settable_params },

    OSSL_DISPATCH_END

};