text: /* Copyright (c) 2010 Lars Nordin <Lars.Nordin@SDlabs.se>
   * Copyright (C) 2010 Simon Josefsson <simon@josefsson.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms,
   * with or without modification, are permitted provided
   * that the following conditions are met:
   *
   *   Redistributions of source code must retain the above
   *   copyright notice, this list of conditions and the
   *   following disclaimer.
   *
   *   Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials
   *   provided with the distribution.
   *
   *   Neither the name of the copyright holder nor the names
   *   of any other contributors may be used to endorse or
   *   promote products derived from this software without
   *   specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
   * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
   * OF SUCH DAMAGE.
   */
  
  #include "libssh2_priv.h"
  
  static int _libssh2_initialized = 0;
  static int _libssh2_init_flags = 0;
  
  LIBSSH2_API int
  libssh2_init(int flags)
  {
      if (_libssh2_initialized == 0 && !(flags & LIBSSH2_INIT_NO_CRYPTO)) {
          libssh2_crypto_init();
  #if LIBSSH2_AES_CTR
          _libssh2_init_aes_ctr();
  #endif
      }
  
      _libssh2_initialized++;
      _libssh2_init_flags |= flags;
  
      return 0;
  }
  
  LIBSSH2_API void
  libssh2_exit(void)
  {
      if (_libssh2_initialized == 0)
          return;
  
      _libssh2_initialized--;
  
      if (!(_libssh2_init_flags & LIBSSH2_INIT_NO_CRYPTO)) {
          libssh2_crypto_exit();
      }
  
      return;
  }
  
  void
  _libssh2_init_if_needed(void)
  {
      if (_libssh2_initialized == 0)
          (void)libssh2_init (0);
  }
  