LCOM1920-T02G10

/*        $NetBSD: bufferevent_ssl.h,v 1.1.1.2 2015/01/29 06:38:27 spz Exp $        */

/*        $NetBSD: bufferevent_ssl.h,v 1.1.1.2 2015/01/29 06:38:27 spz Exp $        */

/*

 * Copyright (c) 2009-2012 Niels Provos and Nick Mathewson

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. 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.

 * 3. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

 */

#ifndef _EVENT2_BUFFEREVENT_SSL_H_

#define _EVENT2_BUFFEREVENT_SSL_H_

/** @file event2/bufferevent_ssl.h

    OpenSSL support for bufferevents.

 */

#include <event2/event-config.h>

#include <event2/bufferevent.h>

#include <event2/util.h>

#ifdef __cplusplus

extern "C" {

#endif

/* This is what openssl's SSL objects are underneath. */

struct ssl_st;

/**

   The state of an SSL object to be used when creating a new

   SSL bufferevent.

 */

enum bufferevent_ssl_state {

        BUFFEREVENT_SSL_OPEN = 0,

        BUFFEREVENT_SSL_CONNECTING = 1,

        BUFFEREVENT_SSL_ACCEPTING = 2

};

#if defined(_EVENT_HAVE_OPENSSL) || defined(_EVENT_IN_DOXYGEN)

/**

   Create a new SSL bufferevent to send its data over another bufferevent.

   @param base An event_base to use to detect reading and writing.  It

      must also be the base for the underlying bufferevent.

   @param underlying A socket to use for this SSL

   @param ssl A SSL* object from openssl.

   @param state The current state of the SSL connection

   @param options One or more bufferevent_options

   @return A new bufferevent on success, or NULL on failure

*/

struct bufferevent *

bufferevent_openssl_filter_new(struct event_base *base,

    struct bufferevent *underlying,

    struct ssl_st *ssl,

    enum bufferevent_ssl_state state,

    int options);

/**

   Create a new SSL bufferevent to send its data over an SSL * on a socket.

   @param base An event_base to use to detect reading and writing

   @param fd A socket to use for this SSL

   @param ssl A SSL* object from openssl.

   @param state The current state of the SSL connection

   @param options One or more bufferevent_options

   @return A new bufferevent on success, or NULL on failure.

*/

struct bufferevent *

bufferevent_openssl_socket_new(struct event_base *base,

    evutil_socket_t fd,

    struct ssl_st *ssl,

    enum bufferevent_ssl_state state,

    int options);

/** Return the underlying openssl SSL * object for an SSL bufferevent. */

struct ssl_st *

bufferevent_openssl_get_ssl(struct bufferevent *bufev);

/** Tells a bufferevent to begin SSL renegotiation. */

int bufferevent_ssl_renegotiate(struct bufferevent *bev);

/** Return the most recent OpenSSL error reported on an SSL bufferevent. */

unsigned long bufferevent_get_openssl_error(struct bufferevent *bev);

#endif

#ifdef __cplusplus

}

#endif

#endif /* _EVENT2_BUFFEREVENT_SSL_H_ */