2 * DTLS implementation written by Nagendra Modadugu
3 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5 /* ====================================================================
6 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
63 #ifndef OPENSSL_NO_DGRAM
65 # if !(defined(_WIN32) || defined(OPENSSL_SYS_VMS))
66 # include <sys/time.h>
68 # if defined(OPENSSL_SYS_VMS)
69 # include <sys/timeb.h>
72 # ifndef OPENSSL_NO_SCTP
73 # include <netinet/sctp.h>
75 # define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
76 # define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
79 # if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
80 # define IP_MTU 14 /* linux is lame */
83 # if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
84 # define IPPROTO_IPV6 41 /* windows is lame */
87 # if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
88 /* Standard definition causes type-punning problems. */
89 # undef IN6_IS_ADDR_V4MAPPED
90 # define s6_addr32 __u6_addr.__u6_addr32
91 # define IN6_IS_ADDR_V4MAPPED(a) \
92 (((a)->s6_addr32[0] == 0) && \
93 ((a)->s6_addr32[1] == 0) && \
94 ((a)->s6_addr32[2] == htonl(0x0000ffff)))
98 # define sock_write SockWrite /* Watt-32 uses same names */
99 # define sock_read SockRead
100 # define sock_puts SockPuts
103 static int dgram_write(BIO
*h
, const char *buf
, int num
);
104 static int dgram_read(BIO
*h
, char *buf
, int size
);
105 static int dgram_puts(BIO
*h
, const char *str
);
106 static long dgram_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
107 static int dgram_new(BIO
*h
);
108 static int dgram_free(BIO
*data
);
109 static int dgram_clear(BIO
*bio
);
111 # ifndef OPENSSL_NO_SCTP
112 static int dgram_sctp_write(BIO
*h
, const char *buf
, int num
);
113 static int dgram_sctp_read(BIO
*h
, char *buf
, int size
);
114 static int dgram_sctp_puts(BIO
*h
, const char *str
);
115 static long dgram_sctp_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
116 static int dgram_sctp_new(BIO
*h
);
117 static int dgram_sctp_free(BIO
*data
);
118 # ifdef SCTP_AUTHENTICATION_EVENT
119 static void dgram_sctp_handle_auth_free_key_event(BIO
*b
, union sctp_notification
124 static int BIO_dgram_should_retry(int s
);
126 static void get_current_time(struct timeval
*t
);
128 static const BIO_METHOD methods_dgramp
= {
134 NULL
, /* dgram_gets, */
141 # ifndef OPENSSL_NO_SCTP
142 static const BIO_METHOD methods_dgramp_sctp
= {
144 "datagram sctp socket",
148 NULL
, /* dgram_gets, */
156 typedef struct bio_dgram_data_st
{
158 unsigned int connected
;
161 struct timeval next_timeout
;
162 struct timeval socket_timeout
;
163 unsigned int peekmode
;
166 # ifndef OPENSSL_NO_SCTP
167 typedef struct bio_dgram_sctp_save_message_st
{
171 } bio_dgram_sctp_save_message
;
173 typedef struct bio_dgram_sctp_data_st
{
175 unsigned int connected
;
178 struct bio_dgram_sctp_sndinfo sndinfo
;
179 struct bio_dgram_sctp_rcvinfo rcvinfo
;
180 struct bio_dgram_sctp_prinfo prinfo
;
181 void (*handle_notifications
) (BIO
*bio
, void *context
, void *buf
);
182 void *notification_context
;
187 int peer_auth_tested
;
188 bio_dgram_sctp_save_message saved_message
;
189 } bio_dgram_sctp_data
;
192 const BIO_METHOD
*BIO_s_datagram(void)
194 return (&methods_dgramp
);
197 BIO
*BIO_new_dgram(int fd
, int close_flag
)
201 ret
= BIO_new(BIO_s_datagram());
204 BIO_set_fd(ret
, fd
, close_flag
);
208 static int dgram_new(BIO
*bi
)
210 bio_dgram_data
*data
= OPENSSL_zalloc(sizeof(*data
));
218 static int dgram_free(BIO
*a
)
220 bio_dgram_data
*data
;
227 data
= (bio_dgram_data
*)a
->ptr
;
233 static int dgram_clear(BIO
*a
)
239 BIO_closesocket(a
->num
);
247 static void dgram_adjust_rcv_timeout(BIO
*b
)
249 # if defined(SO_RCVTIMEO)
250 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
258 /* Is a timer active? */
259 if (data
->next_timeout
.tv_sec
> 0 || data
->next_timeout
.tv_usec
> 0) {
260 struct timeval timenow
, timeleft
;
262 /* Read current socket timeout */
263 # ifdef OPENSSL_SYS_WINDOWS
266 sz
.i
= sizeof(timeout
);
267 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
268 (void *)&timeout
, &sz
.i
) < 0) {
269 perror("getsockopt");
271 data
->socket_timeout
.tv_sec
= timeout
/ 1000;
272 data
->socket_timeout
.tv_usec
= (timeout
% 1000) * 1000;
275 sz
.i
= sizeof(data
->socket_timeout
);
276 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
277 &(data
->socket_timeout
), (void *)&sz
) < 0) {
278 perror("getsockopt");
279 } else if (sizeof(sz
.s
) != sizeof(sz
.i
) && sz
.i
== 0)
280 OPENSSL_assert(sz
.s
<= sizeof(data
->socket_timeout
));
283 /* Get current time */
284 get_current_time(&timenow
);
286 /* Calculate time left until timer expires */
287 memcpy(&timeleft
, &(data
->next_timeout
), sizeof(struct timeval
));
288 if (timeleft
.tv_usec
< timenow
.tv_usec
) {
289 timeleft
.tv_usec
= 1000000 - timenow
.tv_usec
+ timeleft
.tv_usec
;
292 timeleft
.tv_usec
-= timenow
.tv_usec
;
294 if (timeleft
.tv_sec
< timenow
.tv_sec
) {
296 timeleft
.tv_usec
= 1;
298 timeleft
.tv_sec
-= timenow
.tv_sec
;
302 * Adjust socket timeout if next handshake message timer will expire
305 if ((data
->socket_timeout
.tv_sec
== 0
306 && data
->socket_timeout
.tv_usec
== 0)
307 || (data
->socket_timeout
.tv_sec
> timeleft
.tv_sec
)
308 || (data
->socket_timeout
.tv_sec
== timeleft
.tv_sec
309 && data
->socket_timeout
.tv_usec
>= timeleft
.tv_usec
)) {
310 # ifdef OPENSSL_SYS_WINDOWS
311 timeout
= timeleft
.tv_sec
* 1000 + timeleft
.tv_usec
/ 1000;
312 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
313 (void *)&timeout
, sizeof(timeout
)) < 0) {
314 perror("setsockopt");
317 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
, &timeleft
,
318 sizeof(struct timeval
)) < 0) {
319 perror("setsockopt");
327 static void dgram_reset_rcv_timeout(BIO
*b
)
329 # if defined(SO_RCVTIMEO)
330 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
332 /* Is a timer active? */
333 if (data
->next_timeout
.tv_sec
> 0 || data
->next_timeout
.tv_usec
> 0) {
334 # ifdef OPENSSL_SYS_WINDOWS
335 int timeout
= data
->socket_timeout
.tv_sec
* 1000 +
336 data
->socket_timeout
.tv_usec
/ 1000;
337 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
338 (void *)&timeout
, sizeof(timeout
)) < 0) {
339 perror("setsockopt");
343 (b
->num
, SOL_SOCKET
, SO_RCVTIMEO
, &(data
->socket_timeout
),
344 sizeof(struct timeval
)) < 0) {
345 perror("setsockopt");
352 static int dgram_read(BIO
*b
, char *out
, int outl
)
355 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
359 socklen_t len
= sizeof(peer
);
362 clear_socket_error();
363 memset(&peer
, 0, sizeof(peer
));
364 dgram_adjust_rcv_timeout(b
);
367 ret
= recvfrom(b
->num
, out
, outl
, flags
,
368 BIO_ADDR_sockaddr_noconst(&peer
), &len
);
370 if (!data
->connected
&& ret
>= 0)
371 BIO_ctrl(b
, BIO_CTRL_DGRAM_SET_PEER
, 0, &peer
);
373 BIO_clear_retry_flags(b
);
375 if (BIO_dgram_should_retry(ret
)) {
376 BIO_set_retry_read(b
);
377 data
->_errno
= get_last_socket_error();
381 dgram_reset_rcv_timeout(b
);
386 static int dgram_write(BIO
*b
, const char *in
, int inl
)
389 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
390 clear_socket_error();
393 ret
= writesocket(b
->num
, in
, inl
);
395 int peerlen
= BIO_ADDR_sockaddr_size(&data
->peer
);
397 # if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
398 ret
= sendto(b
->num
, (char *)in
, inl
, 0,
399 BIO_ADDR_sockaddr(&data
->peer
), peerlen
);
401 ret
= sendto(b
->num
, in
, inl
, 0,
402 BIO_ADDR_sockaddr(&data
->peer
), peerlen
);
406 BIO_clear_retry_flags(b
);
408 if (BIO_dgram_should_retry(ret
)) {
409 BIO_set_retry_write(b
);
410 data
->_errno
= get_last_socket_error();
416 static long dgram_get_mtu_overhead(bio_dgram_data
*data
)
420 switch (BIO_ADDR_family(&data
->peer
)) {
423 * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
430 # ifdef IN6_IS_ADDR_V4MAPPED
431 struct in6_addr tmp_addr
;
432 if (BIO_ADDR_rawaddress(&data
->peer
, &tmp_addr
, NULL
)
433 && IN6_IS_ADDR_V4MAPPED(&tmp_addr
))
435 * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
441 * Assume this is UDP - 40 bytes for IP, 8 bytes for UDP
448 /* We don't know. Go with the historical default */
455 static long dgram_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
459 bio_dgram_data
*data
= NULL
;
462 # if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
463 socklen_t sockopt_len
; /* assume that system supporting IP_MTU is
464 * modern enough to define socklen_t */
469 data
= (bio_dgram_data
*)b
->ptr
;
481 b
->num
= *((int *)ptr
);
482 b
->shutdown
= (int)num
;
494 case BIO_CTRL_GET_CLOSE
:
497 case BIO_CTRL_SET_CLOSE
:
498 b
->shutdown
= (int)num
;
500 case BIO_CTRL_PENDING
:
501 case BIO_CTRL_WPENDING
:
508 case BIO_CTRL_DGRAM_CONNECT
:
509 BIO_ADDR_make(&data
->peer
, BIO_ADDR_sockaddr((BIO_ADDR
*)ptr
));
511 /* (Linux)kernel sets DF bit on outgoing IP packets */
512 case BIO_CTRL_DGRAM_MTU_DISCOVER
:
513 # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
514 addr_len
= (socklen_t
) sizeof(addr
);
515 memset(&addr
, 0, sizeof(addr
));
516 if (getsockname(b
->num
, &addr
.sa
, &addr_len
) < 0) {
520 switch (addr
.sa
.sa_family
) {
522 sockopt_val
= IP_PMTUDISC_DO
;
523 if ((ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_MTU_DISCOVER
,
524 &sockopt_val
, sizeof(sockopt_val
))) < 0)
525 perror("setsockopt");
527 # if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
529 sockopt_val
= IPV6_PMTUDISC_DO
;
530 if ((ret
= setsockopt(b
->num
, IPPROTO_IPV6
, IPV6_MTU_DISCOVER
,
531 &sockopt_val
, sizeof(sockopt_val
))) < 0)
532 perror("setsockopt");
543 case BIO_CTRL_DGRAM_QUERY_MTU
:
544 # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
545 addr_len
= (socklen_t
) sizeof(addr
);
546 memset(&addr
, 0, sizeof(addr
));
547 if (getsockname(b
->num
, &addr
.sa
, &addr_len
) < 0) {
551 sockopt_len
= sizeof(sockopt_val
);
552 switch (addr
.sa
.sa_family
) {
555 getsockopt(b
->num
, IPPROTO_IP
, IP_MTU
, (void *)&sockopt_val
,
556 &sockopt_len
)) < 0 || sockopt_val
< 0) {
560 * we assume that the transport protocol is UDP and no IP
563 data
->mtu
= sockopt_val
- 8 - 20;
567 # if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
570 getsockopt(b
->num
, IPPROTO_IPV6
, IPV6_MTU
,
571 (void *)&sockopt_val
, &sockopt_len
)) < 0
572 || sockopt_val
< 0) {
576 * we assume that the transport protocol is UDP and no IPV6
579 data
->mtu
= sockopt_val
- 8 - 40;
592 case BIO_CTRL_DGRAM_GET_FALLBACK_MTU
:
593 ret
= -dgram_get_mtu_overhead(data
);
594 switch (BIO_ADDR_family(&data
->peer
)) {
598 # if OPENSSL_USE_IPV6
601 # ifdef IN6_IS_ADDR_V4MAPPED
602 struct in6_addr tmp_addr
;
603 if (BIO_ADDR_rawaddress(&data
->peer
, &tmp_addr
, NULL
)
604 && IN6_IS_ADDR_V4MAPPED(&tmp_addr
))
617 case BIO_CTRL_DGRAM_GET_MTU
:
619 case BIO_CTRL_DGRAM_SET_MTU
:
623 case BIO_CTRL_DGRAM_SET_CONNECTED
:
626 BIO_ADDR_make(&data
->peer
, BIO_ADDR_sockaddr((BIO_ADDR
*)ptr
));
629 memset(&data
->peer
, 0, sizeof(data
->peer
));
632 case BIO_CTRL_DGRAM_GET_PEER
:
633 ret
= BIO_ADDR_sockaddr_size(&data
->peer
);
634 /* FIXME: if num < ret, we will only return part of an address.
635 That should bee an error, no? */
636 if (num
== 0 || num
> ret
)
638 memcpy(ptr
, &data
->peer
, (ret
= num
));
640 case BIO_CTRL_DGRAM_SET_PEER
:
641 BIO_ADDR_make(&data
->peer
, BIO_ADDR_sockaddr((BIO_ADDR
*)ptr
));
643 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT
:
644 memcpy(&(data
->next_timeout
), ptr
, sizeof(struct timeval
));
646 # if defined(SO_RCVTIMEO)
647 case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT
:
648 # ifdef OPENSSL_SYS_WINDOWS
650 struct timeval
*tv
= (struct timeval
*)ptr
;
651 int timeout
= tv
->tv_sec
* 1000 + tv
->tv_usec
/ 1000;
652 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
653 (void *)&timeout
, sizeof(timeout
)) < 0) {
654 perror("setsockopt");
659 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
, ptr
,
660 sizeof(struct timeval
)) < 0) {
661 perror("setsockopt");
666 case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT
:
674 # ifdef OPENSSL_SYS_WINDOWS
676 struct timeval
*tv
= (struct timeval
*)ptr
;
678 sz
.i
= sizeof(timeout
);
679 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
680 (void *)&timeout
, &sz
.i
) < 0) {
681 perror("getsockopt");
684 tv
->tv_sec
= timeout
/ 1000;
685 tv
->tv_usec
= (timeout
% 1000) * 1000;
689 sz
.i
= sizeof(struct timeval
);
690 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
691 ptr
, (void *)&sz
) < 0) {
692 perror("getsockopt");
694 } else if (sizeof(sz
.s
) != sizeof(sz
.i
) && sz
.i
== 0) {
695 OPENSSL_assert(sz
.s
<= sizeof(struct timeval
));
703 # if defined(SO_SNDTIMEO)
704 case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT
:
705 # ifdef OPENSSL_SYS_WINDOWS
707 struct timeval
*tv
= (struct timeval
*)ptr
;
708 int timeout
= tv
->tv_sec
* 1000 + tv
->tv_usec
/ 1000;
709 if (setsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
,
710 (void *)&timeout
, sizeof(timeout
)) < 0) {
711 perror("setsockopt");
716 if (setsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
, ptr
,
717 sizeof(struct timeval
)) < 0) {
718 perror("setsockopt");
723 case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT
:
731 # ifdef OPENSSL_SYS_WINDOWS
733 struct timeval
*tv
= (struct timeval
*)ptr
;
735 sz
.i
= sizeof(timeout
);
736 if (getsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
,
737 (void *)&timeout
, &sz
.i
) < 0) {
738 perror("getsockopt");
741 tv
->tv_sec
= timeout
/ 1000;
742 tv
->tv_usec
= (timeout
% 1000) * 1000;
746 sz
.i
= sizeof(struct timeval
);
747 if (getsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
,
748 ptr
, (void *)&sz
) < 0) {
749 perror("getsockopt");
751 } else if (sizeof(sz
.s
) != sizeof(sz
.i
) && sz
.i
== 0) {
752 OPENSSL_assert(sz
.s
<= sizeof(struct timeval
));
760 case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP
:
762 case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP
:
763 # ifdef OPENSSL_SYS_WINDOWS
764 d_errno
= (data
->_errno
== WSAETIMEDOUT
);
766 d_errno
= (data
->_errno
== EAGAIN
);
775 case BIO_CTRL_DGRAM_MTU_EXCEEDED
:
776 if (data
->_errno
== EMSGSIZE
) {
783 case BIO_CTRL_DGRAM_SET_DONT_FRAG
:
784 sockopt_val
= num
? 1 : 0;
786 switch (data
->peer
.sa
.sa_family
) {
788 # if defined(IP_DONTFRAG)
789 if ((ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_DONTFRAG
,
790 &sockopt_val
, sizeof(sockopt_val
))) < 0) {
791 perror("setsockopt");
794 # elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined (IP_PMTUDISC_PROBE)
795 if ((sockopt_val
= num
? IP_PMTUDISC_PROBE
: IP_PMTUDISC_DONT
),
796 (ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_MTU_DISCOVER
,
797 &sockopt_val
, sizeof(sockopt_val
))) < 0) {
798 perror("setsockopt");
801 # elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT)
802 if ((ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_DONTFRAGMENT
,
803 (const char *)&sockopt_val
,
804 sizeof(sockopt_val
))) < 0) {
805 perror("setsockopt");
812 # if OPENSSL_USE_IPV6
814 # if defined(IPV6_DONTFRAG)
815 if ((ret
= setsockopt(b
->num
, IPPROTO_IPV6
, IPV6_DONTFRAG
,
816 (const void *)&sockopt_val
,
817 sizeof(sockopt_val
))) < 0) {
818 perror("setsockopt");
821 # elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
822 if ((sockopt_val
= num
? IP_PMTUDISC_PROBE
: IP_PMTUDISC_DONT
),
823 (ret
= setsockopt(b
->num
, IPPROTO_IPV6
, IPV6_MTU_DISCOVER
,
824 &sockopt_val
, sizeof(sockopt_val
))) < 0) {
825 perror("setsockopt");
838 case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD
:
839 ret
= dgram_get_mtu_overhead(data
);
841 case BIO_CTRL_DGRAM_SET_PEEK_MODE
:
842 data
->peekmode
= (unsigned int)num
;
851 static int dgram_puts(BIO
*bp
, const char *str
)
856 ret
= dgram_write(bp
, str
, n
);
860 # ifndef OPENSSL_NO_SCTP
861 const BIO_METHOD
*BIO_s_datagram_sctp(void)
863 return (&methods_dgramp_sctp
);
866 BIO
*BIO_new_dgram_sctp(int fd
, int close_flag
)
869 int ret
, optval
= 20000;
870 int auth_data
= 0, auth_forward
= 0;
872 struct sctp_authchunk auth
;
873 struct sctp_authchunks
*authchunks
;
874 socklen_t sockopt_len
;
875 # ifdef SCTP_AUTHENTICATION_EVENT
877 struct sctp_event event
;
879 struct sctp_event_subscribe event
;
883 bio
= BIO_new(BIO_s_datagram_sctp());
886 BIO_set_fd(bio
, fd
, close_flag
);
888 /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
889 auth
.sauth_chunk
= OPENSSL_SCTP_DATA_CHUNK_TYPE
;
891 setsockopt(fd
, IPPROTO_SCTP
, SCTP_AUTH_CHUNK
, &auth
,
892 sizeof(struct sctp_authchunk
));
897 auth
.sauth_chunk
= OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE
;
899 setsockopt(fd
, IPPROTO_SCTP
, SCTP_AUTH_CHUNK
, &auth
,
900 sizeof(struct sctp_authchunk
));
907 * Test if activation was successful. When using accept(), SCTP-AUTH has
908 * to be activated for the listening socket already, otherwise the
909 * connected socket won't use it.
911 sockopt_len
= (socklen_t
) (sizeof(sctp_assoc_t
) + 256 * sizeof(uint8_t));
912 authchunks
= OPENSSL_zalloc(sockopt_len
);
913 if (authchunks
== NULL
) {
917 ret
= getsockopt(fd
, IPPROTO_SCTP
, SCTP_LOCAL_AUTH_CHUNKS
, authchunks
,
920 OPENSSL_free(authchunks
);
925 for (p
= (unsigned char *)authchunks
->gauth_chunks
;
926 p
< (unsigned char *)authchunks
+ sockopt_len
;
927 p
+= sizeof(uint8_t)) {
928 if (*p
== OPENSSL_SCTP_DATA_CHUNK_TYPE
)
930 if (*p
== OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE
)
934 OPENSSL_free(authchunks
);
936 OPENSSL_assert(auth_data
);
937 OPENSSL_assert(auth_forward
);
939 # ifdef SCTP_AUTHENTICATION_EVENT
941 memset(&event
, 0, sizeof(event
));
942 event
.se_assoc_id
= 0;
943 event
.se_type
= SCTP_AUTHENTICATION_EVENT
;
946 setsockopt(fd
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
947 sizeof(struct sctp_event
));
953 sockopt_len
= (socklen_t
) sizeof(struct sctp_event_subscribe
);
954 ret
= getsockopt(fd
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
, &sockopt_len
);
960 event
.sctp_authentication_event
= 1;
963 setsockopt(fd
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
964 sizeof(struct sctp_event_subscribe
));
973 * Disable partial delivery by setting the min size larger than the max
974 * record size of 2^14 + 2048 + 13
977 setsockopt(fd
, IPPROTO_SCTP
, SCTP_PARTIAL_DELIVERY_POINT
, &optval
,
987 int BIO_dgram_is_sctp(BIO
*bio
)
989 return (BIO_method_type(bio
) == BIO_TYPE_DGRAM_SCTP
);
992 static int dgram_sctp_new(BIO
*bi
)
994 bio_dgram_sctp_data
*data
= NULL
;
998 data
= OPENSSL_zalloc(sizeof(*data
));
1001 # ifdef SCTP_PR_SCTP_NONE
1002 data
->prinfo
.pr_policy
= SCTP_PR_SCTP_NONE
;
1010 static int dgram_sctp_free(BIO
*a
)
1012 bio_dgram_sctp_data
*data
;
1016 if (!dgram_clear(a
))
1019 data
= (bio_dgram_sctp_data
*) a
->ptr
;
1021 OPENSSL_free(data
->saved_message
.data
);
1028 # ifdef SCTP_AUTHENTICATION_EVENT
1029 void dgram_sctp_handle_auth_free_key_event(BIO
*b
,
1030 union sctp_notification
*snp
)
1033 struct sctp_authkey_event
*authkeyevent
= &snp
->sn_auth_event
;
1035 if (authkeyevent
->auth_indication
== SCTP_AUTH_FREE_KEY
) {
1036 struct sctp_authkeyid authkeyid
;
1039 authkeyid
.scact_keynumber
= authkeyevent
->auth_keynumber
;
1040 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_DELETE_KEY
,
1041 &authkeyid
, sizeof(struct sctp_authkeyid
));
1046 static int dgram_sctp_read(BIO
*b
, char *out
, int outl
)
1048 int ret
= 0, n
= 0, i
, optval
;
1050 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1051 union sctp_notification
*snp
;
1054 struct cmsghdr
*cmsg
;
1058 clear_socket_error();
1061 memset(&data
->rcvinfo
, 0, sizeof(data
->rcvinfo
));
1064 msg
.msg_name
= NULL
;
1065 msg
.msg_namelen
= 0;
1068 msg
.msg_control
= cmsgbuf
;
1069 msg
.msg_controllen
= 512;
1071 n
= recvmsg(b
->num
, &msg
, 0);
1079 if (msg
.msg_controllen
> 0) {
1080 for (cmsg
= CMSG_FIRSTHDR(&msg
); cmsg
;
1081 cmsg
= CMSG_NXTHDR(&msg
, cmsg
)) {
1082 if (cmsg
->cmsg_level
!= IPPROTO_SCTP
)
1084 # ifdef SCTP_RCVINFO
1085 if (cmsg
->cmsg_type
== SCTP_RCVINFO
) {
1086 struct sctp_rcvinfo
*rcvinfo
;
1088 rcvinfo
= (struct sctp_rcvinfo
*)CMSG_DATA(cmsg
);
1089 data
->rcvinfo
.rcv_sid
= rcvinfo
->rcv_sid
;
1090 data
->rcvinfo
.rcv_ssn
= rcvinfo
->rcv_ssn
;
1091 data
->rcvinfo
.rcv_flags
= rcvinfo
->rcv_flags
;
1092 data
->rcvinfo
.rcv_ppid
= rcvinfo
->rcv_ppid
;
1093 data
->rcvinfo
.rcv_tsn
= rcvinfo
->rcv_tsn
;
1094 data
->rcvinfo
.rcv_cumtsn
= rcvinfo
->rcv_cumtsn
;
1095 data
->rcvinfo
.rcv_context
= rcvinfo
->rcv_context
;
1099 if (cmsg
->cmsg_type
== SCTP_SNDRCV
) {
1100 struct sctp_sndrcvinfo
*sndrcvinfo
;
1103 (struct sctp_sndrcvinfo
*)CMSG_DATA(cmsg
);
1104 data
->rcvinfo
.rcv_sid
= sndrcvinfo
->sinfo_stream
;
1105 data
->rcvinfo
.rcv_ssn
= sndrcvinfo
->sinfo_ssn
;
1106 data
->rcvinfo
.rcv_flags
= sndrcvinfo
->sinfo_flags
;
1107 data
->rcvinfo
.rcv_ppid
= sndrcvinfo
->sinfo_ppid
;
1108 data
->rcvinfo
.rcv_tsn
= sndrcvinfo
->sinfo_tsn
;
1109 data
->rcvinfo
.rcv_cumtsn
= sndrcvinfo
->sinfo_cumtsn
;
1110 data
->rcvinfo
.rcv_context
= sndrcvinfo
->sinfo_context
;
1116 if (msg
.msg_flags
& MSG_NOTIFICATION
) {
1117 snp
= (union sctp_notification
*)out
;
1118 if (snp
->sn_header
.sn_type
== SCTP_SENDER_DRY_EVENT
) {
1120 struct sctp_event event
;
1122 struct sctp_event_subscribe event
;
1123 socklen_t eventsize
;
1126 * If a message has been delayed until the socket is dry,
1127 * it can be sent now.
1129 if (data
->saved_message
.length
> 0) {
1130 i
= dgram_sctp_write(data
->saved_message
.bio
,
1131 data
->saved_message
.data
,
1132 data
->saved_message
.length
);
1137 OPENSSL_free(data
->saved_message
.data
);
1138 data
->saved_message
.data
= NULL
;
1139 data
->saved_message
.length
= 0;
1142 /* disable sender dry event */
1144 memset(&event
, 0, sizeof(event
));
1145 event
.se_assoc_id
= 0;
1146 event
.se_type
= SCTP_SENDER_DRY_EVENT
;
1148 i
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1149 sizeof(struct sctp_event
));
1155 eventsize
= sizeof(struct sctp_event_subscribe
);
1156 i
= getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1163 event
.sctp_sender_dry_event
= 0;
1165 i
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1166 sizeof(struct sctp_event_subscribe
));
1173 # ifdef SCTP_AUTHENTICATION_EVENT
1174 if (snp
->sn_header
.sn_type
== SCTP_AUTHENTICATION_EVENT
)
1175 dgram_sctp_handle_auth_free_key_event(b
, snp
);
1178 if (data
->handle_notifications
!= NULL
)
1179 data
->handle_notifications(b
, data
->notification_context
,
1182 memset(out
, 0, outl
);
1186 while ((msg
.msg_flags
& MSG_NOTIFICATION
) && (msg
.msg_flags
& MSG_EOR
)
1189 if (ret
> 0 && !(msg
.msg_flags
& MSG_EOR
)) {
1190 /* Partial message read, this should never happen! */
1193 * The buffer was too small, this means the peer sent a message
1194 * that was larger than allowed.
1200 * Test if socket buffer can handle max record size (2^14 + 2048
1203 optlen
= (socklen_t
) sizeof(int);
1204 ret
= getsockopt(b
->num
, SOL_SOCKET
, SO_RCVBUF
, &optval
, &optlen
);
1206 OPENSSL_assert(optval
>= 18445);
1209 * Test if SCTP doesn't partially deliver below max record size
1210 * (2^14 + 2048 + 13)
1212 optlen
= (socklen_t
) sizeof(int);
1214 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_PARTIAL_DELIVERY_POINT
,
1217 OPENSSL_assert(optval
>= 18445);
1220 * Partially delivered notification??? Probably a bug....
1222 OPENSSL_assert(!(msg
.msg_flags
& MSG_NOTIFICATION
));
1225 * Everything seems ok till now, so it's most likely a message
1226 * dropped by PR-SCTP.
1228 memset(out
, 0, outl
);
1229 BIO_set_retry_read(b
);
1233 BIO_clear_retry_flags(b
);
1235 if (BIO_dgram_should_retry(ret
)) {
1236 BIO_set_retry_read(b
);
1237 data
->_errno
= get_last_socket_error();
1241 /* Test if peer uses SCTP-AUTH before continuing */
1242 if (!data
->peer_auth_tested
) {
1243 int ii
, auth_data
= 0, auth_forward
= 0;
1245 struct sctp_authchunks
*authchunks
;
1248 (socklen_t
) (sizeof(sctp_assoc_t
) + 256 * sizeof(uint8_t));
1249 authchunks
= OPENSSL_malloc(optlen
);
1250 if (authchunks
== NULL
) {
1251 BIOerr(BIO_F_DGRAM_SCTP_READ
, ERR_R_MALLOC_FAILURE
);
1254 memset(authchunks
, 0, optlen
);
1255 ii
= getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_PEER_AUTH_CHUNKS
,
1256 authchunks
, &optlen
);
1259 for (p
= (unsigned char *)authchunks
->gauth_chunks
;
1260 p
< (unsigned char *)authchunks
+ optlen
;
1261 p
+= sizeof(uint8_t)) {
1262 if (*p
== OPENSSL_SCTP_DATA_CHUNK_TYPE
)
1264 if (*p
== OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE
)
1268 OPENSSL_free(authchunks
);
1270 if (!auth_data
|| !auth_forward
) {
1271 BIOerr(BIO_F_DGRAM_SCTP_READ
, BIO_R_CONNECT_ERROR
);
1275 data
->peer_auth_tested
= 1;
1282 * dgram_sctp_write - send message on SCTP socket
1283 * @b: BIO to write to
1285 * @inl: amount of bytes in @in to send
1287 * Returns -1 on error or the sent amount of bytes on success
1289 static int dgram_sctp_write(BIO
*b
, const char *in
, int inl
)
1292 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1293 struct bio_dgram_sctp_sndinfo
*sinfo
= &(data
->sndinfo
);
1294 struct bio_dgram_sctp_prinfo
*pinfo
= &(data
->prinfo
);
1295 struct bio_dgram_sctp_sndinfo handshake_sinfo
;
1296 struct iovec iov
[1];
1298 struct cmsghdr
*cmsg
;
1299 # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1300 char cmsgbuf
[CMSG_SPACE(sizeof(struct sctp_sndinfo
)) +
1301 CMSG_SPACE(sizeof(struct sctp_prinfo
))];
1302 struct sctp_sndinfo
*sndinfo
;
1303 struct sctp_prinfo
*prinfo
;
1305 char cmsgbuf
[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo
))];
1306 struct sctp_sndrcvinfo
*sndrcvinfo
;
1309 clear_socket_error();
1312 * If we're send anything else than application data, disable all user
1313 * parameters and flags.
1316 memset(&handshake_sinfo
, 0, sizeof(handshake_sinfo
));
1317 # ifdef SCTP_SACK_IMMEDIATELY
1318 handshake_sinfo
.snd_flags
= SCTP_SACK_IMMEDIATELY
;
1320 sinfo
= &handshake_sinfo
;
1324 * If we have to send a shutdown alert message and the socket is not dry
1325 * yet, we have to save it and send it as soon as the socket gets dry.
1327 if (data
->save_shutdown
) {
1328 ret
= BIO_dgram_sctp_wait_for_dry(b
);
1334 data
->saved_message
.bio
= b
;
1335 if ((tmp
= OPENSSL_malloc(inl
)) == NULL
) {
1336 BIOerr(BIO_F_DGRAM_SCTP_WRITE
, ERR_R_MALLOC_FAILURE
);
1339 OPENSSL_free(data
->saved_message
.data
);
1340 data
->saved_message
.data
= tmp
;
1341 memcpy(data
->saved_message
.data
, in
, inl
);
1342 data
->saved_message
.length
= inl
;
1347 iov
[0].iov_base
= (char *)in
;
1348 iov
[0].iov_len
= inl
;
1349 msg
.msg_name
= NULL
;
1350 msg
.msg_namelen
= 0;
1353 msg
.msg_control
= (caddr_t
) cmsgbuf
;
1354 msg
.msg_controllen
= 0;
1356 # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1357 cmsg
= (struct cmsghdr
*)cmsgbuf
;
1358 cmsg
->cmsg_level
= IPPROTO_SCTP
;
1359 cmsg
->cmsg_type
= SCTP_SNDINFO
;
1360 cmsg
->cmsg_len
= CMSG_LEN(sizeof(struct sctp_sndinfo
));
1361 sndinfo
= (struct sctp_sndinfo
*)CMSG_DATA(cmsg
);
1362 memset(sndinfo
, 0, sizeof(*sndinfo
));
1363 sndinfo
->snd_sid
= sinfo
->snd_sid
;
1364 sndinfo
->snd_flags
= sinfo
->snd_flags
;
1365 sndinfo
->snd_ppid
= sinfo
->snd_ppid
;
1366 sndinfo
->snd_context
= sinfo
->snd_context
;
1367 msg
.msg_controllen
+= CMSG_SPACE(sizeof(struct sctp_sndinfo
));
1370 (struct cmsghdr
*)&cmsgbuf
[CMSG_SPACE(sizeof(struct sctp_sndinfo
))];
1371 cmsg
->cmsg_level
= IPPROTO_SCTP
;
1372 cmsg
->cmsg_type
= SCTP_PRINFO
;
1373 cmsg
->cmsg_len
= CMSG_LEN(sizeof(struct sctp_prinfo
));
1374 prinfo
= (struct sctp_prinfo
*)CMSG_DATA(cmsg
);
1375 memset(prinfo
, 0, sizeof(*prinfo
));
1376 prinfo
->pr_policy
= pinfo
->pr_policy
;
1377 prinfo
->pr_value
= pinfo
->pr_value
;
1378 msg
.msg_controllen
+= CMSG_SPACE(sizeof(struct sctp_prinfo
));
1380 cmsg
= (struct cmsghdr
*)cmsgbuf
;
1381 cmsg
->cmsg_level
= IPPROTO_SCTP
;
1382 cmsg
->cmsg_type
= SCTP_SNDRCV
;
1383 cmsg
->cmsg_len
= CMSG_LEN(sizeof(struct sctp_sndrcvinfo
));
1384 sndrcvinfo
= (struct sctp_sndrcvinfo
*)CMSG_DATA(cmsg
);
1385 memset(sndrcvinfo
, 0, sizeof(*sndrcvinfo
));
1386 sndrcvinfo
->sinfo_stream
= sinfo
->snd_sid
;
1387 sndrcvinfo
->sinfo_flags
= sinfo
->snd_flags
;
1389 sndrcvinfo
->sinfo_flags
|= pinfo
->pr_policy
;
1391 sndrcvinfo
->sinfo_ppid
= sinfo
->snd_ppid
;
1392 sndrcvinfo
->sinfo_context
= sinfo
->snd_context
;
1393 sndrcvinfo
->sinfo_timetolive
= pinfo
->pr_value
;
1394 msg
.msg_controllen
+= CMSG_SPACE(sizeof(struct sctp_sndrcvinfo
));
1397 ret
= sendmsg(b
->num
, &msg
, 0);
1399 BIO_clear_retry_flags(b
);
1401 if (BIO_dgram_should_retry(ret
)) {
1402 BIO_set_retry_write(b
);
1403 data
->_errno
= get_last_socket_error();
1409 static long dgram_sctp_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
1412 bio_dgram_sctp_data
*data
= NULL
;
1413 socklen_t sockopt_len
= 0;
1414 struct sctp_authkeyid authkeyid
;
1415 struct sctp_authkey
*authkey
= NULL
;
1417 data
= (bio_dgram_sctp_data
*) b
->ptr
;
1420 case BIO_CTRL_DGRAM_QUERY_MTU
:
1422 * Set to maximum (2^14) and ignore user input to enable transport
1423 * protocol fragmentation. Returns always 2^14.
1428 case BIO_CTRL_DGRAM_SET_MTU
:
1430 * Set to maximum (2^14) and ignore input to enable transport
1431 * protocol fragmentation. Returns always 2^14.
1436 case BIO_CTRL_DGRAM_SET_CONNECTED
:
1437 case BIO_CTRL_DGRAM_CONNECT
:
1438 /* Returns always -1. */
1441 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT
:
1443 * SCTP doesn't need the DTLS timer Returns always 1.
1446 case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD
:
1448 * We allow transport protocol fragmentation so this is irrelevant
1452 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE
:
1454 data
->in_handshake
= 1;
1456 data
->in_handshake
= 0;
1459 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_NODELAY
,
1460 &data
->in_handshake
, sizeof(int));
1462 case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY
:
1464 * New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise.
1467 /* Get active key */
1468 sockopt_len
= sizeof(struct sctp_authkeyid
);
1470 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
, &authkeyid
,
1476 sockopt_len
= sizeof(struct sctp_authkey
) + 64 * sizeof(uint8_t);
1477 authkey
= OPENSSL_malloc(sockopt_len
);
1478 if (authkey
== NULL
) {
1482 memset(authkey
, 0, sockopt_len
);
1483 authkey
->sca_keynumber
= authkeyid
.scact_keynumber
+ 1;
1484 # ifndef __FreeBSD__
1486 * This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3
1487 * and higher work without it.
1489 authkey
->sca_keylength
= 64;
1491 memcpy(&authkey
->sca_key
[0], ptr
, 64 * sizeof(uint8_t));
1494 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_KEY
, authkey
,
1496 OPENSSL_free(authkey
);
1501 /* Reset active key */
1502 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
,
1503 &authkeyid
, sizeof(struct sctp_authkeyid
));
1508 case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY
:
1509 /* Returns 0 on success, -1 otherwise. */
1511 /* Get active key */
1512 sockopt_len
= sizeof(struct sctp_authkeyid
);
1514 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
, &authkeyid
,
1519 /* Set active key */
1520 authkeyid
.scact_keynumber
= authkeyid
.scact_keynumber
+ 1;
1521 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
,
1522 &authkeyid
, sizeof(struct sctp_authkeyid
));
1527 * CCS has been sent, so remember that and fall through to check if
1528 * we need to deactivate an old key
1532 case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD
:
1533 /* Returns 0 on success, -1 otherwise. */
1536 * Has this command really been called or is this just a
1539 if (cmd
== BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD
)
1543 * CSS has been both, received and sent, so deactivate an old key
1545 if (data
->ccs_rcvd
== 1 && data
->ccs_sent
== 1) {
1546 /* Get active key */
1547 sockopt_len
= sizeof(struct sctp_authkeyid
);
1549 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
,
1550 &authkeyid
, &sockopt_len
);
1555 * Deactivate key or delete second last key if
1556 * SCTP_AUTHENTICATION_EVENT is not available.
1558 authkeyid
.scact_keynumber
= authkeyid
.scact_keynumber
- 1;
1559 # ifdef SCTP_AUTH_DEACTIVATE_KEY
1560 sockopt_len
= sizeof(struct sctp_authkeyid
);
1561 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_DEACTIVATE_KEY
,
1562 &authkeyid
, sockopt_len
);
1566 # ifndef SCTP_AUTHENTICATION_EVENT
1567 if (authkeyid
.scact_keynumber
> 0) {
1568 authkeyid
.scact_keynumber
= authkeyid
.scact_keynumber
- 1;
1569 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_DELETE_KEY
,
1570 &authkeyid
, sizeof(struct sctp_authkeyid
));
1580 case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO
:
1581 /* Returns the size of the copied struct. */
1582 if (num
> (long)sizeof(struct bio_dgram_sctp_sndinfo
))
1583 num
= sizeof(struct bio_dgram_sctp_sndinfo
);
1585 memcpy(ptr
, &(data
->sndinfo
), num
);
1588 case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO
:
1589 /* Returns the size of the copied struct. */
1590 if (num
> (long)sizeof(struct bio_dgram_sctp_sndinfo
))
1591 num
= sizeof(struct bio_dgram_sctp_sndinfo
);
1593 memcpy(&(data
->sndinfo
), ptr
, num
);
1595 case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO
:
1596 /* Returns the size of the copied struct. */
1597 if (num
> (long)sizeof(struct bio_dgram_sctp_rcvinfo
))
1598 num
= sizeof(struct bio_dgram_sctp_rcvinfo
);
1600 memcpy(ptr
, &data
->rcvinfo
, num
);
1604 case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO
:
1605 /* Returns the size of the copied struct. */
1606 if (num
> (long)sizeof(struct bio_dgram_sctp_rcvinfo
))
1607 num
= sizeof(struct bio_dgram_sctp_rcvinfo
);
1609 memcpy(&(data
->rcvinfo
), ptr
, num
);
1611 case BIO_CTRL_DGRAM_SCTP_GET_PRINFO
:
1612 /* Returns the size of the copied struct. */
1613 if (num
> (long)sizeof(struct bio_dgram_sctp_prinfo
))
1614 num
= sizeof(struct bio_dgram_sctp_prinfo
);
1616 memcpy(ptr
, &(data
->prinfo
), num
);
1619 case BIO_CTRL_DGRAM_SCTP_SET_PRINFO
:
1620 /* Returns the size of the copied struct. */
1621 if (num
> (long)sizeof(struct bio_dgram_sctp_prinfo
))
1622 num
= sizeof(struct bio_dgram_sctp_prinfo
);
1624 memcpy(&(data
->prinfo
), ptr
, num
);
1626 case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN
:
1627 /* Returns always 1. */
1629 data
->save_shutdown
= 1;
1631 data
->save_shutdown
= 0;
1636 * Pass to default ctrl function to process SCTP unspecific commands
1638 ret
= dgram_ctrl(b
, cmd
, num
, ptr
);
1644 int BIO_dgram_sctp_notification_cb(BIO
*b
,
1645 void (*handle_notifications
) (BIO
*bio
,
1651 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1653 if (handle_notifications
!= NULL
) {
1654 data
->handle_notifications
= handle_notifications
;
1655 data
->notification_context
= context
;
1663 * BIO_dgram_sctp_wait_for_dry - Wait for SCTP SENDER_DRY event
1664 * @b: The BIO to check for the dry event
1666 * Wait until the peer confirms all packets have been received, and so that
1667 * our kernel doesn't have anything to send anymore. This is only received by
1668 * the peer's kernel, not the application.
1672 * 0 when not dry yet
1675 int BIO_dgram_sctp_wait_for_dry(BIO
*b
)
1680 union sctp_notification snp
;
1684 struct sctp_event event
;
1686 struct sctp_event_subscribe event
;
1687 socklen_t eventsize
;
1689 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1691 /* set sender dry event */
1693 memset(&event
, 0, sizeof(event
));
1694 event
.se_assoc_id
= 0;
1695 event
.se_type
= SCTP_SENDER_DRY_EVENT
;
1698 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1699 sizeof(struct sctp_event
));
1701 eventsize
= sizeof(struct sctp_event_subscribe
);
1702 ret
= getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
, &eventsize
);
1706 event
.sctp_sender_dry_event
= 1;
1709 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1710 sizeof(struct sctp_event_subscribe
));
1715 /* peek for notification */
1716 memset(&snp
, 0, sizeof(snp
));
1717 iov
.iov_base
= (char *)&snp
;
1718 iov
.iov_len
= sizeof(union sctp_notification
);
1719 msg
.msg_name
= NULL
;
1720 msg
.msg_namelen
= 0;
1723 msg
.msg_control
= NULL
;
1724 msg
.msg_controllen
= 0;
1727 n
= recvmsg(b
->num
, &msg
, MSG_PEEK
);
1729 if ((n
< 0) && (get_last_socket_error() != EAGAIN
)
1730 && (get_last_socket_error() != EWOULDBLOCK
))
1736 /* if we find a notification, process it and try again if necessary */
1737 while (msg
.msg_flags
& MSG_NOTIFICATION
) {
1738 memset(&snp
, 0, sizeof(snp
));
1739 iov
.iov_base
= (char *)&snp
;
1740 iov
.iov_len
= sizeof(union sctp_notification
);
1741 msg
.msg_name
= NULL
;
1742 msg
.msg_namelen
= 0;
1745 msg
.msg_control
= NULL
;
1746 msg
.msg_controllen
= 0;
1749 n
= recvmsg(b
->num
, &msg
, 0);
1751 if ((n
< 0) && (get_last_socket_error() != EAGAIN
)
1752 && (get_last_socket_error() != EWOULDBLOCK
))
1758 if (snp
.sn_header
.sn_type
== SCTP_SENDER_DRY_EVENT
) {
1761 /* disable sender dry event */
1763 memset(&event
, 0, sizeof(event
));
1764 event
.se_assoc_id
= 0;
1765 event
.se_type
= SCTP_SENDER_DRY_EVENT
;
1768 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1769 sizeof(struct sctp_event
));
1771 eventsize
= (socklen_t
) sizeof(struct sctp_event_subscribe
);
1773 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1778 event
.sctp_sender_dry_event
= 0;
1781 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1782 sizeof(struct sctp_event_subscribe
));
1787 # ifdef SCTP_AUTHENTICATION_EVENT
1788 if (snp
.sn_header
.sn_type
== SCTP_AUTHENTICATION_EVENT
)
1789 dgram_sctp_handle_auth_free_key_event(b
, &snp
);
1792 if (data
->handle_notifications
!= NULL
)
1793 data
->handle_notifications(b
, data
->notification_context
,
1796 /* found notification, peek again */
1797 memset(&snp
, 0, sizeof(snp
));
1798 iov
.iov_base
= (char *)&snp
;
1799 iov
.iov_len
= sizeof(union sctp_notification
);
1800 msg
.msg_name
= NULL
;
1801 msg
.msg_namelen
= 0;
1804 msg
.msg_control
= NULL
;
1805 msg
.msg_controllen
= 0;
1808 /* if we have seen the dry already, don't wait */
1810 sockflags
= fcntl(b
->num
, F_GETFL
, 0);
1811 fcntl(b
->num
, F_SETFL
, O_NONBLOCK
);
1814 n
= recvmsg(b
->num
, &msg
, MSG_PEEK
);
1817 fcntl(b
->num
, F_SETFL
, sockflags
);
1821 if ((n
< 0) && (get_last_socket_error() != EAGAIN
)
1822 && (get_last_socket_error() != EWOULDBLOCK
))
1829 /* read anything else */
1833 int BIO_dgram_sctp_msg_waiting(BIO
*b
)
1836 union sctp_notification snp
;
1839 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1841 /* Check if there are any messages waiting to be read */
1843 memset(&snp
, 0, sizeof(snp
));
1844 iov
.iov_base
= (char *)&snp
;
1845 iov
.iov_len
= sizeof(union sctp_notification
);
1846 msg
.msg_name
= NULL
;
1847 msg
.msg_namelen
= 0;
1850 msg
.msg_control
= NULL
;
1851 msg
.msg_controllen
= 0;
1854 sockflags
= fcntl(b
->num
, F_GETFL
, 0);
1855 fcntl(b
->num
, F_SETFL
, O_NONBLOCK
);
1856 n
= recvmsg(b
->num
, &msg
, MSG_PEEK
);
1857 fcntl(b
->num
, F_SETFL
, sockflags
);
1859 /* if notification, process and try again */
1860 if (n
> 0 && (msg
.msg_flags
& MSG_NOTIFICATION
)) {
1861 # ifdef SCTP_AUTHENTICATION_EVENT
1862 if (snp
.sn_header
.sn_type
== SCTP_AUTHENTICATION_EVENT
)
1863 dgram_sctp_handle_auth_free_key_event(b
, &snp
);
1866 memset(&snp
, 0, sizeof(snp
));
1867 iov
.iov_base
= (char *)&snp
;
1868 iov
.iov_len
= sizeof(union sctp_notification
);
1869 msg
.msg_name
= NULL
;
1870 msg
.msg_namelen
= 0;
1873 msg
.msg_control
= NULL
;
1874 msg
.msg_controllen
= 0;
1876 n
= recvmsg(b
->num
, &msg
, 0);
1878 if (data
->handle_notifications
!= NULL
)
1879 data
->handle_notifications(b
, data
->notification_context
,
1883 } while (n
> 0 && (msg
.msg_flags
& MSG_NOTIFICATION
));
1885 /* Return 1 if there is a message to be read, return 0 otherwise. */
1892 static int dgram_sctp_puts(BIO
*bp
, const char *str
)
1897 ret
= dgram_sctp_write(bp
, str
, n
);
1902 static int BIO_dgram_should_retry(int i
)
1906 if ((i
== 0) || (i
== -1)) {
1907 err
= get_last_socket_error();
1909 # if defined(OPENSSL_SYS_WINDOWS)
1911 * If the socket return value (i) is -1 and err is unexpectedly 0 at
1912 * this point, the error code was overwritten by another system call
1913 * before this error handling is called.
1917 return (BIO_dgram_non_fatal_error(err
));
1922 int BIO_dgram_non_fatal_error(int err
)
1925 # if defined(OPENSSL_SYS_WINDOWS)
1926 # if defined(WSAEWOULDBLOCK)
1927 case WSAEWOULDBLOCK
:
1932 # ifdef WSAEWOULDBLOCK
1933 # if WSAEWOULDBLOCK != EWOULDBLOCK
1946 # if EWOULDBLOCK != EAGAIN
1971 static void get_current_time(struct timeval
*t
)
1973 # if defined(_WIN32)
1976 unsigned __int64 ul
;
1981 SystemTimeToFileTime(&st
, &now
.ft
);
1983 now
.ul
-= 116444736000000000ULL;
1985 now
.ul
-= 116444736000000000UI
64; /* re-bias to 1/1/1970 */
1987 t
->tv_sec
= (long)(now
.ul
/ 10000000);
1988 t
->tv_usec
= ((int)(now
.ul
% 10000000)) / 10;
1989 # elif defined(OPENSSL_SYS_VMS)
1992 t
->tv_sec
= (long)tb
.time
;
1993 t
->tv_usec
= (long)tb
.millitm
* 1000;
1995 gettimeofday(t
, NULL
);