/*

 * Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (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 <openssl/crypto.h>

#include "internal/cryptlib.h"

#if !defined(OPENSSL_THREADS) || defined(CRYPTO_TDEBUG)

# if defined(OPENSSL_SYS_UNIX)

#  include <sys/types.h>

#  include <unistd.h>

# endif

CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)

{

    CRYPTO_RWLOCK *lock;

    if ((lock = OPENSSL_zalloc(sizeof(unsigned int))) == NULL) {

        /* Don't set error, to avoid recursion blowup. */

        return NULL;

    }

    *(unsigned int *)lock = 1;

    return lock;

}

int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)

{

    if (!ossl_assert(*(unsigned int *)lock == 1))

        return 0;

    return 1;

}

int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)

{

    if (!ossl_assert(*(unsigned int *)lock == 1))

        return 0;

    return 1;

}

int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)

{

    if (!ossl_assert(*(unsigned int *)lock == 1))

        return 0;

    return 1;

}

void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) {

    if (lock == NULL)

        return;

    *(unsigned int *)lock = 0;

    OPENSSL_free(lock);

    return;

}

int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))

{

    if (*once != 0)

        return 1;

    init();

    *once = 1;

    return 1;

}

#define OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX 256

static void *thread_local_storage[OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX];

int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))

{

    static unsigned int thread_local_key = 0;

    if (thread_local_key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)

        return 0;

    *key = thread_local_key++;

    thread_local_storage[*key] = NULL;

    return 1;

}

void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)

{

    if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)

        return NULL;

    return thread_local_storage[*key];

}

int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)

{

    if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)

        return 0;

    thread_local_storage[*key] = val;

    return 1;

}

int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key)

{

    *key = OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX + 1;

    return 1;

}

CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void)

{

    return 0;

}

int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b)

{

    return (a == b);

}

int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)

{

    *val += amount;

    *ret  = *val;

    return 1;

}

int openssl_init_fork_handlers(void)

{

    return 0;

}

int openssl_get_fork_id(void)

{

# if defined(OPENSSL_SYS_UNIX)

    return getpid();

# else

    return 0;

# endif

}

#endif