/*

 * Copyright 2019-2021 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

 */

#include <string.h>

#include <openssl/err.h>

#include <openssl/proverr.h>

#include "prov/digestcommon.h"

#include "internal/common.h"

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

#ifndef digest_default_get_params_list

static const OSSL_PARAM digest_default_get_params_list[] = {

    OSSL_PARAM_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE, NULL),

    OSSL_PARAM_size_t(OSSL_DIGEST_PARAM_SIZE, NULL),

    OSSL_PARAM_int(OSSL_DIGEST_PARAM_XOF, NULL),

    OSSL_PARAM_int(OSSL_DIGEST_PARAM_ALGID_ABSENT, NULL),

    OSSL_PARAM_END

};

#endif

#ifndef digest_default_get_params_st

struct digest_default_get_params_st {

    OSSL_PARAM *aldid;

    OSSL_PARAM *bsize;

    OSSL_PARAM *size;

    OSSL_PARAM *xof;

};

#endif

#ifndef digest_default_get_params_decoder

static int digest_default_get_params_decoder

    (const OSSL_PARAM *p, struct digest_default_get_params_st *r)

{

    const char *s;

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

    if (p != NULL)

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

            switch(s[0]) {

            default:

                break;

            case 'a':

                if (ossl_likely(strcmp("lgid-absent", s + 1) == 0)) {

                    /* DIGEST_PARAM_ALGID_ABSENT */

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

                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,

                                       "param %s is repeated", s);

                        return 0;

                    }

                    r->aldid = (OSSL_PARAM *)p;

                }

                break;

            case 'b':

                if (ossl_likely(strcmp("locksize", s + 1) == 0)) {

                    /* DIGEST_PARAM_BLOCK_SIZE */

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

                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,

                                       "param %s is repeated", s);

                        return 0;

                    }

                    r->bsize = (OSSL_PARAM *)p;

                }

                break;

            case 's':

                if (ossl_likely(strcmp("ize", s + 1) == 0)) {

                    /* DIGEST_PARAM_SIZE */

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

                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,

                                       "param %s is repeated", s);

                        return 0;

                    }

                    r->size = (OSSL_PARAM *)p;

                }

                break;

            case 'x':

                if (ossl_likely(strcmp("of", s + 1) == 0)) {

                    /* DIGEST_PARAM_XOF */

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

                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,

                                       "param %s is repeated", s);

                        return 0;

                    }

                    r->xof = (OSSL_PARAM *)p;

                }

            }

    return 1;

}

#endif

/* End of machine generated */

int ossl_digest_default_get_params(OSSL_PARAM params[], size_t blksz,

                                   size_t paramsz, unsigned long flags)

{

    struct digest_default_get_params_st p;

    if (!digest_default_get_params_decoder(params, &p))

        return 0;

    if (p.bsize != NULL && !OSSL_PARAM_set_size_t(p.bsize, blksz)) {

        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);

        return 0;

    }

    if (p.size != NULL && !OSSL_PARAM_set_size_t(p.size, paramsz)) {

        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);

        return 0;

    }

    if (p.xof != NULL

        && !OSSL_PARAM_set_int(p.xof, (flags & PROV_DIGEST_FLAG_XOF) != 0)) {

        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);

        return 0;

    }

    if (p.aldid != NULL

        && !OSSL_PARAM_set_int(p.aldid, (flags & PROV_DIGEST_FLAG_ALGID_ABSENT) != 0)) {

        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);

        return 0;

    }

    return 1;

}

const OSSL_PARAM *ossl_digest_default_gettable_params(void *provctx)

{

    return digest_default_get_params_list;

}