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/* crypto/bio/bio_dgram.c */
/*
* DTLS implementation written by Nagendra Modadugu
* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
*/
/* ====================================================================
* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
*
* 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. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include <errno.h>
#define USE_SOCKETS
#include "cryptlib.h"
#include <openssl/bio.h>
#ifndef OPENSSL_NO_SCTP
#include <netinet/sctp.h>
#include <fcntl.h>
#define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
#define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
#endif
#if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
#if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
#define IPPROTO_IPV6 41 /* windows is lame */
#endif
#if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
/* Standard definition causes type-punning problems. */
#undef IN6_IS_ADDR_V4MAPPED
#define s6_addr32 __u6_addr.__u6_addr32
#define IN6_IS_ADDR_V4MAPPED(a) \
(((a)->s6_addr32[0] == 0) && \
((a)->s6_addr32[1] == 0) && \
((a)->s6_addr32[2] == htonl(0x0000ffff)))
#endif
#ifdef WATT32
#define sock_write SockWrite /* Watt-32 uses same names */
#define sock_read SockRead
#define sock_puts SockPuts
#endif
static int dgram_write(BIO *h, const char *buf, int num);
static int dgram_read(BIO *h, char *buf, int size);
static int dgram_puts(BIO *h, const char *str);
static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int dgram_new(BIO *h);
static int dgram_free(BIO *data);
static int dgram_clear(BIO *bio);
#ifndef OPENSSL_NO_SCTP
static int dgram_sctp_write(BIO *h, const char *buf, int num);
static int dgram_sctp_read(BIO *h, char *buf, int size);
static int dgram_sctp_puts(BIO *h, const char *str);
static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int dgram_sctp_new(BIO *h);
static int dgram_sctp_free(BIO *data);
#ifdef SCTP_AUTHENTICATION_EVENT
static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification *snp);
#endif
#endif
static int BIO_dgram_should_retry(int s);
static void get_current_time(struct timeval *t);
static BIO_METHOD methods_dgramp=
{
BIO_TYPE_DGRAM,
"datagram socket",
dgram_write,
dgram_read,
dgram_puts,
NULL, /* dgram_gets, */
dgram_ctrl,
dgram_new,
dgram_free,
NULL,
};
#ifndef OPENSSL_NO_SCTP
static BIO_METHOD methods_dgramp_sctp=
{
BIO_TYPE_DGRAM_SCTP,
"datagram sctp socket",
dgram_sctp_write,
dgram_sctp_read,
dgram_sctp_puts,
NULL, /* dgram_gets, */
dgram_sctp_ctrl,
dgram_sctp_new,
dgram_sctp_free,
NULL,
};
#endif
union {
struct sockaddr sa;
struct sockaddr_in sa_in;
struct sockaddr_in6 sa_in6;
} peer;
unsigned int connected;
unsigned int _errno;
unsigned int mtu;
struct timeval next_timeout;
struct timeval socket_timeout;
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#ifndef OPENSSL_NO_SCTP
typedef struct bio_dgram_sctp_save_message_st
{
BIO *bio;
char *data;
int length;
} bio_dgram_sctp_save_message;
typedef struct bio_dgram_sctp_data_st
{
union {
struct sockaddr sa;
struct sockaddr_in sa_in;
#if OPENSSL_USE_IPV6
struct sockaddr_in6 sa_in6;
#endif
} peer;
unsigned int connected;
unsigned int _errno;
unsigned int mtu;
struct bio_dgram_sctp_sndinfo sndinfo;
struct bio_dgram_sctp_rcvinfo rcvinfo;
struct bio_dgram_sctp_prinfo prinfo;
void (*handle_notifications)(BIO *bio, void *context, void *buf);
void* notification_context;
int in_handshake;
int ccs_rcvd;
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