crypto/o_init.c

   1 /*
   2  * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <e_os.h>
  11 #include <openssl/err.h>
  12 #ifdef OPENSSL_FIPS
  13 # include <openssl/fips.h>
  14 # include <openssl/rand.h>
  15 #endif
  16
  17 /*
  18  * Perform any essential OpenSSL initialization operations. Currently only
  19  * sets FIPS callbacks
  20  */
  21
  22 void OPENSSL_init(void)
  23 {
  24     static int done = 0;
  25     if (done)
  26         return;
  27     done = 1;
  28 #ifdef OPENSSL_FIPS
  29     FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
  30     FIPS_set_error_callbacks(ERR_put_error, ERR_add_error_vdata);
  31     FIPS_set_malloc_callbacks(CRYPTO_malloc, CRYPTO_free);
  32     RAND_init_fips();
  33 #endif
  34 }