/*

 * Copyright 2022-2026 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 may obtain a copy of the License at

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

 * or in the file LICENSE in the source distribution.

 */

#include <openssl/pem.h>

#include <openssl/err.h>

#include "fuzzer.h"

int FuzzerInitialize(int *argc, char ***argv)

{

    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);

    ERR_clear_error();

    CRYPTO_free_ex_index(0, -1);

    return 1;

}

int FuzzerTestOneInput(const uint8_t *buf, size_t len)

{

    BIO *in;

    char *name = NULL, *header = NULL;

    unsigned char *data = NULL;

    long outlen;

    if (len <= 1 || len > INT_MAX)

        return 0;

    in = BIO_new(BIO_s_mem());

    if (in == NULL) {

        ERR_clear_error();

        return 0;

    }

    if ((size_t)BIO_write(in, buf + 1, (int)(len - 1)) != len - 1) {

        BIO_free(in);

        ERR_clear_error();

        return 0;

    }

    if (PEM_read_bio_ex(in, &name, &header, &data, &outlen, buf[0]) == 1) {

        /* Try to read all the data we get to see if allocated properly. */

        BIO_write(in, name, (int)strlen(name));

        BIO_write(in, header, (int)strlen(header));

        BIO_write(in, data, outlen);

    }

    if (buf[0] & PEM_FLAG_SECURE) {

        OPENSSL_secure_free(name);

        OPENSSL_secure_free(header);

        OPENSSL_secure_free(data);

    } else {

        OPENSSL_free(name);

        OPENSSL_free(header);

        OPENSSL_free(data);

    }

    BIO_free(in);

    ERR_clear_error();

    return 0;

}

void FuzzerCleanup(void)

{

}