

#include "internal/e_os.h"

#include "internal/err.h"
#include <openssl/crypto.h>
#include <openssl/evp.h>
#include <openssl/trace.h>
#include "ssl_local.h"
#include "sslerr.h"
#include "internal/thread_once.h"

static int stopped;

static void ssl_library_stop(void);

static CRYPTO_ONCE ssl_base = CRYPTO_ONCE_STATIC_INIT;
static int ssl_base_inited = 0;
DEFINE_RUN_ONCE_STATIC(ossl_init_ssl_base)
{
#ifndef OPENSSL_NO_COMP
    OSSL_TRACE(INIT, "ossl_init_ssl_base: "
               "SSL_COMP_get_compression_methods()\n");
    
    SSL_COMP_get_compression_methods();
#endif
    ssl_sort_cipher_list();
    OSSL_TRACE(INIT, "ossl_init_ssl_base: SSL_add_ssl_module()\n");
    
    OPENSSL_atexit(ssl_library_stop);
    ssl_base_inited = 1;
    return 1;
}

static CRYPTO_ONCE ssl_strings = CRYPTO_ONCE_STATIC_INIT;

DEFINE_RUN_ONCE_STATIC(ossl_init_load_ssl_strings)
{
    
#if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
    OSSL_TRACE(INIT, "ossl_init_load_ssl_strings: ossl_err_load_SSL_strings()\n");
    ossl_err_load_SSL_strings();
#endif
    return 1;
}

DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_ssl_strings,
                           ossl_init_load_ssl_strings)
{
    
    return 1;
}

static void ssl_library_stop(void)
{
    
    if (stopped)
        return;
    stopped = 1;

    if (ssl_base_inited) {
#ifndef OPENSSL_NO_COMP
        OSSL_TRACE(INIT, "ssl_library_stop: "
                   "ssl_comp_free_compression_methods_int()\n");
        ssl_comp_free_compression_methods_int();
#endif
    }
}


int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
{
    static int stoperrset = 0;

    if (stopped) {
        if (!stoperrset) {
            
            stoperrset = 1;
            ERR_raise(ERR_LIB_SSL, ERR_R_INIT_FAIL);
        }
        return 0;
    }

    opts |= OPENSSL_INIT_ADD_ALL_CIPHERS
         |  OPENSSL_INIT_ADD_ALL_DIGESTS;
#ifndef OPENSSL_NO_AUTOLOAD_CONFIG
    if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) == 0)
        opts |= OPENSSL_INIT_LOAD_CONFIG;
#endif

    if (!OPENSSL_init_crypto(opts, settings))
        return 0;

    if (!RUN_ONCE(&ssl_base, ossl_init_ssl_base))
        return 0;

    if ((opts & OPENSSL_INIT_NO_LOAD_SSL_STRINGS)
        && !RUN_ONCE_ALT(&ssl_strings, ossl_init_no_load_ssl_strings,
                         ossl_init_load_ssl_strings))
        return 0;

    if ((opts & OPENSSL_INIT_LOAD_SSL_STRINGS)
        && !RUN_ONCE(&ssl_strings, ossl_init_load_ssl_strings))
        return 0;

    return 1;
}
