/*
 *  Version feature information
 *
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may
 *  not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

#include "common.h"

#if defined(MBEDTLS_VERSION_C)

#include "mbedtls/version.h"

#include <string.h>

static const char * const features[] = {
#if defined(MBEDTLS_VERSION_FEATURES)
    FEATURE_DEFINES
#endif /* MBEDTLS_VERSION_FEATURES */
    NULL
};

int mbedtls_version_check_feature(const char *feature)
{
    const char * const *idx = features;

    if (*idx == NULL) {
        return -2;
    }

    if (feature == NULL) {
        return -1;
    }

    if (strncmp(feature, "MBEDTLS_", 8)) {
        return -1;
    }

    feature += 8;

    while (*idx != NULL) {
        if (!strcmp(*idx, feature)) {
            return 0;
        }
        idx++;
    }
    return -1;
}

#endif /* MBEDTLS_VERSION_C */