1 /* crypto/bio/bio_dgram.c */
3 * DTLS implementation written by Nagendra Modadugu
4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
6 /* ====================================================================
7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * openssl-core@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
63 #include "internal/cryptlib.h"
65 #include <openssl/bio.h>
66 #ifndef OPENSSL_NO_DGRAM
68 # if !(defined(_WIN32) || defined(OPENSSL_SYS_VMS))
69 # include <sys/time.h>
71 # if defined(OPENSSL_SYS_VMS)
72 # include <sys/timeb.h>
75 # ifndef OPENSSL_NO_SCTP
76 # include <netinet/sctp.h>
78 # define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
79 # define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
82 # if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
83 # define IP_MTU 14 /* linux is lame */
86 # if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
87 # define IPPROTO_IPV6 41 /* windows is lame */
90 # if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
91 /* Standard definition causes type-punning problems. */
92 # undef IN6_IS_ADDR_V4MAPPED
93 # define s6_addr32 __u6_addr.__u6_addr32
94 # define IN6_IS_ADDR_V4MAPPED(a) \
95 (((a)->s6_addr32[0] == 0) && \
96 ((a)->s6_addr32[1] == 0) && \
97 ((a)->s6_addr32[2] == htonl(0x0000ffff)))
101 # define sock_write SockWrite /* Watt-32 uses same names */
102 # define sock_read SockRead
103 # define sock_puts SockPuts
106 static int dgram_write(BIO
*h
, const char *buf
, int num
);
107 static int dgram_read(BIO
*h
, char *buf
, int size
);
108 static int dgram_puts(BIO
*h
, const char *str
);
109 static long dgram_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
110 static int dgram_new(BIO
*h
);
111 static int dgram_free(BIO
*data
);
112 static int dgram_clear(BIO
*bio
);
114 # ifndef OPENSSL_NO_SCTP
115 static int dgram_sctp_write(BIO
*h
, const char *buf
, int num
);
116 static int dgram_sctp_read(BIO
*h
, char *buf
, int size
);
117 static int dgram_sctp_puts(BIO
*h
, const char *str
);
118 static long dgram_sctp_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
119 static int dgram_sctp_new(BIO
*h
);
120 static int dgram_sctp_free(BIO
*data
);
121 # ifdef SCTP_AUTHENTICATION_EVENT
122 static void dgram_sctp_handle_auth_free_key_event(BIO
*b
, union sctp_notification
127 static int BIO_dgram_should_retry(int s
);
129 static void get_current_time(struct timeval
*t
);
131 static BIO_METHOD methods_dgramp
= {
137 NULL
, /* dgram_gets, */
144 # ifndef OPENSSL_NO_SCTP
145 static BIO_METHOD methods_dgramp_sctp
= {
147 "datagram sctp socket",
151 NULL
, /* dgram_gets, */
159 typedef struct bio_dgram_data_st
{
162 struct sockaddr_in sa_in
;
163 # if OPENSSL_USE_IPV6
164 struct sockaddr_in6 sa_in6
;
167 unsigned int connected
;
170 struct timeval next_timeout
;
171 struct timeval socket_timeout
;
172 unsigned int peekmode
;
175 # ifndef OPENSSL_NO_SCTP
176 typedef struct bio_dgram_sctp_save_message_st
{
180 } bio_dgram_sctp_save_message
;
182 typedef struct bio_dgram_sctp_data_st
{
185 struct sockaddr_in sa_in
;
186 # if OPENSSL_USE_IPV6
187 struct sockaddr_in6 sa_in6
;
190 unsigned int connected
;
193 struct bio_dgram_sctp_sndinfo sndinfo
;
194 struct bio_dgram_sctp_rcvinfo rcvinfo
;
195 struct bio_dgram_sctp_prinfo prinfo
;
196 void (*handle_notifications
) (BIO
*bio
, void *context
, void *buf
);
197 void *notification_context
;
202 int peer_auth_tested
;
203 bio_dgram_sctp_save_message saved_message
;
204 } bio_dgram_sctp_data
;
207 BIO_METHOD
*BIO_s_datagram(void)
209 return (&methods_dgramp
);
212 BIO
*BIO_new_dgram(int fd
, int close_flag
)
216 ret
= BIO_new(BIO_s_datagram());
219 BIO_set_fd(ret
, fd
, close_flag
);
223 static int dgram_new(BIO
*bi
)
225 bio_dgram_data
*data
= OPENSSL_zalloc(sizeof(*data
));
233 static int dgram_free(BIO
*a
)
235 bio_dgram_data
*data
;
242 data
= (bio_dgram_data
*)a
->ptr
;
248 static int dgram_clear(BIO
*a
)
262 static void dgram_adjust_rcv_timeout(BIO
*b
)
264 # if defined(SO_RCVTIMEO)
265 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
273 /* Is a timer active? */
274 if (data
->next_timeout
.tv_sec
> 0 || data
->next_timeout
.tv_usec
> 0) {
275 struct timeval timenow
, timeleft
;
277 /* Read current socket timeout */
278 # ifdef OPENSSL_SYS_WINDOWS
281 sz
.i
= sizeof(timeout
);
282 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
283 (void *)&timeout
, &sz
.i
) < 0) {
284 perror("getsockopt");
286 data
->socket_timeout
.tv_sec
= timeout
/ 1000;
287 data
->socket_timeout
.tv_usec
= (timeout
% 1000) * 1000;
290 sz
.i
= sizeof(data
->socket_timeout
);
291 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
292 &(data
->socket_timeout
), (void *)&sz
) < 0) {
293 perror("getsockopt");
294 } else if (sizeof(sz
.s
) != sizeof(sz
.i
) && sz
.i
== 0)
295 OPENSSL_assert(sz
.s
<= sizeof(data
->socket_timeout
));
298 /* Get current time */
299 get_current_time(&timenow
);
301 /* Calculate time left until timer expires */
302 memcpy(&timeleft
, &(data
->next_timeout
), sizeof(struct timeval
));
303 if (timeleft
.tv_usec
< timenow
.tv_usec
) {
304 timeleft
.tv_usec
= 1000000 - timenow
.tv_usec
+ timeleft
.tv_usec
;
307 timeleft
.tv_usec
-= timenow
.tv_usec
;
309 if (timeleft
.tv_sec
< timenow
.tv_sec
) {
311 timeleft
.tv_usec
= 1;
313 timeleft
.tv_sec
-= timenow
.tv_sec
;
317 * Adjust socket timeout if next handhake message timer will expire
320 if ((data
->socket_timeout
.tv_sec
== 0
321 && data
->socket_timeout
.tv_usec
== 0)
322 || (data
->socket_timeout
.tv_sec
> timeleft
.tv_sec
)
323 || (data
->socket_timeout
.tv_sec
== timeleft
.tv_sec
324 && data
->socket_timeout
.tv_usec
>= timeleft
.tv_usec
)) {
325 # ifdef OPENSSL_SYS_WINDOWS
326 timeout
= timeleft
.tv_sec
* 1000 + timeleft
.tv_usec
/ 1000;
327 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
328 (void *)&timeout
, sizeof(timeout
)) < 0) {
329 perror("setsockopt");
332 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
, &timeleft
,
333 sizeof(struct timeval
)) < 0) {
334 perror("setsockopt");
342 static void dgram_reset_rcv_timeout(BIO
*b
)
344 # if defined(SO_RCVTIMEO)
345 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
347 /* Is a timer active? */
348 if (data
->next_timeout
.tv_sec
> 0 || data
->next_timeout
.tv_usec
> 0) {
349 # ifdef OPENSSL_SYS_WINDOWS
350 int timeout
= data
->socket_timeout
.tv_sec
* 1000 +
351 data
->socket_timeout
.tv_usec
/ 1000;
352 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
353 (void *)&timeout
, sizeof(timeout
)) < 0) {
354 perror("setsockopt");
358 (b
->num
, SOL_SOCKET
, SO_RCVTIMEO
, &(data
->socket_timeout
),
359 sizeof(struct timeval
)) < 0) {
360 perror("setsockopt");
367 static int dgram_read(BIO
*b
, char *out
, int outl
)
370 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
375 * See commentary in b_sock.c. <appro>
383 struct sockaddr_in sa_in
;
384 # if OPENSSL_USE_IPV6
385 struct sockaddr_in6 sa_in6
;
391 sa
.len
.i
= sizeof(sa
.peer
);
394 clear_socket_error();
395 memset(&sa
.peer
, 0, sizeof(sa
.peer
));
396 dgram_adjust_rcv_timeout(b
);
399 ret
= recvfrom(b
->num
, out
, outl
, flags
, &sa
.peer
.sa
, (void *)&sa
.len
);
400 if (sizeof(sa
.len
.i
) != sizeof(sa
.len
.s
) && sa
.len
.i
== 0) {
401 OPENSSL_assert(sa
.len
.s
<= sizeof(sa
.peer
));
402 sa
.len
.i
= (int)sa
.len
.s
;
405 if (!data
->connected
&& ret
>= 0)
406 BIO_ctrl(b
, BIO_CTRL_DGRAM_SET_PEER
, 0, &sa
.peer
);
408 BIO_clear_retry_flags(b
);
410 if (BIO_dgram_should_retry(ret
)) {
411 BIO_set_retry_read(b
);
412 data
->_errno
= get_last_socket_error();
416 dgram_reset_rcv_timeout(b
);
421 static int dgram_write(BIO
*b
, const char *in
, int inl
)
424 bio_dgram_data
*data
= (bio_dgram_data
*)b
->ptr
;
425 clear_socket_error();
428 ret
= writesocket(b
->num
, in
, inl
);
430 int peerlen
= sizeof(data
->peer
);
432 if (data
->peer
.sa
.sa_family
== AF_INET
)
433 peerlen
= sizeof(data
->peer
.sa_in
);
434 # if OPENSSL_USE_IPV6
435 else if (data
->peer
.sa
.sa_family
== AF_INET6
)
436 peerlen
= sizeof(data
->peer
.sa_in6
);
438 # if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
439 ret
= sendto(b
->num
, (char *)in
, inl
, 0, &data
->peer
.sa
, peerlen
);
441 ret
= sendto(b
->num
, in
, inl
, 0, &data
->peer
.sa
, peerlen
);
445 BIO_clear_retry_flags(b
);
447 if (BIO_dgram_should_retry(ret
)) {
448 BIO_set_retry_write(b
);
449 data
->_errno
= get_last_socket_error();
455 static long dgram_get_mtu_overhead(bio_dgram_data
*data
)
459 switch (data
->peer
.sa
.sa_family
) {
462 * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
466 # if OPENSSL_USE_IPV6
468 # ifdef IN6_IS_ADDR_V4MAPPED
469 if (IN6_IS_ADDR_V4MAPPED(&data
->peer
.sa_in6
.sin6_addr
))
471 * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
477 * Assume this is UDP - 40 bytes for IP, 8 bytes for UDP
483 /* We don't know. Go with the historical default */
490 static long dgram_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
494 struct sockaddr
*to
= NULL
;
495 bio_dgram_data
*data
= NULL
;
497 # if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
498 socklen_t sockopt_len
; /* assume that system supporting IP_MTU is
499 * modern enough to define socklen_t */
503 struct sockaddr_in s4
;
504 # if OPENSSL_USE_IPV6
505 struct sockaddr_in6 s6
;
510 data
= (bio_dgram_data
*)b
->ptr
;
515 case BIO_C_FILE_SEEK
:
518 case BIO_C_FILE_TELL
:
524 b
->num
= *((int *)ptr
);
525 b
->shutdown
= (int)num
;
537 case BIO_CTRL_GET_CLOSE
:
540 case BIO_CTRL_SET_CLOSE
:
541 b
->shutdown
= (int)num
;
543 case BIO_CTRL_PENDING
:
544 case BIO_CTRL_WPENDING
:
551 case BIO_CTRL_DGRAM_CONNECT
:
552 to
= (struct sockaddr
*)ptr
;
553 switch (to
->sa_family
) {
555 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa_in
));
557 # if OPENSSL_USE_IPV6
559 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa_in6
));
563 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa
));
567 /* (Linux)kernel sets DF bit on outgoing IP packets */
568 case BIO_CTRL_DGRAM_MTU_DISCOVER
:
569 # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
570 addr_len
= (socklen_t
) sizeof(addr
);
571 memset(&addr
, 0, sizeof(addr
));
572 if (getsockname(b
->num
, &addr
.sa
, &addr_len
) < 0) {
576 switch (addr
.sa
.sa_family
) {
578 sockopt_val
= IP_PMTUDISC_DO
;
579 if ((ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_MTU_DISCOVER
,
580 &sockopt_val
, sizeof(sockopt_val
))) < 0)
581 perror("setsockopt");
583 # if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
585 sockopt_val
= IPV6_PMTUDISC_DO
;
586 if ((ret
= setsockopt(b
->num
, IPPROTO_IPV6
, IPV6_MTU_DISCOVER
,
587 &sockopt_val
, sizeof(sockopt_val
))) < 0)
588 perror("setsockopt");
599 case BIO_CTRL_DGRAM_QUERY_MTU
:
600 # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
601 addr_len
= (socklen_t
) sizeof(addr
);
602 memset(&addr
, 0, sizeof(addr
));
603 if (getsockname(b
->num
, &addr
.sa
, &addr_len
) < 0) {
607 sockopt_len
= sizeof(sockopt_val
);
608 switch (addr
.sa
.sa_family
) {
611 getsockopt(b
->num
, IPPROTO_IP
, IP_MTU
, (void *)&sockopt_val
,
612 &sockopt_len
)) < 0 || sockopt_val
< 0) {
616 * we assume that the transport protocol is UDP and no IP
619 data
->mtu
= sockopt_val
- 8 - 20;
623 # if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
626 getsockopt(b
->num
, IPPROTO_IPV6
, IPV6_MTU
,
627 (void *)&sockopt_val
, &sockopt_len
)) < 0
628 || sockopt_val
< 0) {
632 * we assume that the transport protocol is UDP and no IPV6
635 data
->mtu
= sockopt_val
- 8 - 40;
648 case BIO_CTRL_DGRAM_GET_FALLBACK_MTU
:
649 ret
= -dgram_get_mtu_overhead(data
);
650 switch (data
->peer
.sa
.sa_family
) {
654 # if OPENSSL_USE_IPV6
656 # ifdef IN6_IS_ADDR_V4MAPPED
657 if (IN6_IS_ADDR_V4MAPPED(&data
->peer
.sa_in6
.sin6_addr
))
669 case BIO_CTRL_DGRAM_GET_MTU
:
671 case BIO_CTRL_DGRAM_SET_MTU
:
675 case BIO_CTRL_DGRAM_SET_CONNECTED
:
676 to
= (struct sockaddr
*)ptr
;
680 switch (to
->sa_family
) {
682 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa_in
));
684 # if OPENSSL_USE_IPV6
686 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa_in6
));
690 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa
));
695 memset(&data
->peer
, 0, sizeof(data
->peer
));
698 case BIO_CTRL_DGRAM_GET_PEER
:
699 switch (data
->peer
.sa
.sa_family
) {
701 ret
= sizeof(data
->peer
.sa_in
);
703 # if OPENSSL_USE_IPV6
705 ret
= sizeof(data
->peer
.sa_in6
);
709 ret
= sizeof(data
->peer
.sa
);
712 if (num
== 0 || num
> ret
)
714 memcpy(ptr
, &data
->peer
, (ret
= num
));
716 case BIO_CTRL_DGRAM_SET_PEER
:
717 to
= (struct sockaddr
*)ptr
;
718 switch (to
->sa_family
) {
720 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa_in
));
722 # if OPENSSL_USE_IPV6
724 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa_in6
));
728 memcpy(&data
->peer
, to
, sizeof(data
->peer
.sa
));
732 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT
:
733 memcpy(&(data
->next_timeout
), ptr
, sizeof(struct timeval
));
735 # if defined(SO_RCVTIMEO)
736 case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT
:
737 # ifdef OPENSSL_SYS_WINDOWS
739 struct timeval
*tv
= (struct timeval
*)ptr
;
740 int timeout
= tv
->tv_sec
* 1000 + tv
->tv_usec
/ 1000;
741 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
742 (void *)&timeout
, sizeof(timeout
)) < 0) {
743 perror("setsockopt");
748 if (setsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
, ptr
,
749 sizeof(struct timeval
)) < 0) {
750 perror("setsockopt");
755 case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT
:
763 # ifdef OPENSSL_SYS_WINDOWS
765 struct timeval
*tv
= (struct timeval
*)ptr
;
767 sz
.i
= sizeof(timeout
);
768 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
769 (void *)&timeout
, &sz
.i
) < 0) {
770 perror("getsockopt");
773 tv
->tv_sec
= timeout
/ 1000;
774 tv
->tv_usec
= (timeout
% 1000) * 1000;
778 sz
.i
= sizeof(struct timeval
);
779 if (getsockopt(b
->num
, SOL_SOCKET
, SO_RCVTIMEO
,
780 ptr
, (void *)&sz
) < 0) {
781 perror("getsockopt");
783 } else if (sizeof(sz
.s
) != sizeof(sz
.i
) && sz
.i
== 0) {
784 OPENSSL_assert(sz
.s
<= sizeof(struct timeval
));
792 # if defined(SO_SNDTIMEO)
793 case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT
:
794 # ifdef OPENSSL_SYS_WINDOWS
796 struct timeval
*tv
= (struct timeval
*)ptr
;
797 int timeout
= tv
->tv_sec
* 1000 + tv
->tv_usec
/ 1000;
798 if (setsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
,
799 (void *)&timeout
, sizeof(timeout
)) < 0) {
800 perror("setsockopt");
805 if (setsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
, ptr
,
806 sizeof(struct timeval
)) < 0) {
807 perror("setsockopt");
812 case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT
:
820 # ifdef OPENSSL_SYS_WINDOWS
822 struct timeval
*tv
= (struct timeval
*)ptr
;
824 sz
.i
= sizeof(timeout
);
825 if (getsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
,
826 (void *)&timeout
, &sz
.i
) < 0) {
827 perror("getsockopt");
830 tv
->tv_sec
= timeout
/ 1000;
831 tv
->tv_usec
= (timeout
% 1000) * 1000;
835 sz
.i
= sizeof(struct timeval
);
836 if (getsockopt(b
->num
, SOL_SOCKET
, SO_SNDTIMEO
,
837 ptr
, (void *)&sz
) < 0) {
838 perror("getsockopt");
840 } else if (sizeof(sz
.s
) != sizeof(sz
.i
) && sz
.i
== 0) {
841 OPENSSL_assert(sz
.s
<= sizeof(struct timeval
));
849 case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP
:
851 case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP
:
852 # ifdef OPENSSL_SYS_WINDOWS
853 if (data
->_errno
== WSAETIMEDOUT
)
855 if (data
->_errno
== EAGAIN
)
864 case BIO_CTRL_DGRAM_MTU_EXCEEDED
:
865 if (data
->_errno
== EMSGSIZE
) {
872 case BIO_CTRL_DGRAM_SET_DONT_FRAG
:
873 sockopt_val
= num
? 1 : 0;
875 switch (data
->peer
.sa
.sa_family
) {
877 # if defined(IP_DONTFRAG)
878 if ((ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_DONTFRAG
,
879 &sockopt_val
, sizeof(sockopt_val
))) < 0) {
880 perror("setsockopt");
883 # elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined (IP_PMTUDISC_PROBE)
884 if ((sockopt_val
= num
? IP_PMTUDISC_PROBE
: IP_PMTUDISC_DONT
),
885 (ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_MTU_DISCOVER
,
886 &sockopt_val
, sizeof(sockopt_val
))) < 0) {
887 perror("setsockopt");
890 # elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT)
891 if ((ret
= setsockopt(b
->num
, IPPROTO_IP
, IP_DONTFRAGMENT
,
892 (const char *)&sockopt_val
,
893 sizeof(sockopt_val
))) < 0) {
894 perror("setsockopt");
901 # if OPENSSL_USE_IPV6
903 # if defined(IPV6_DONTFRAG)
904 if ((ret
= setsockopt(b
->num
, IPPROTO_IPV6
, IPV6_DONTFRAG
,
905 (const void *)&sockopt_val
,
906 sizeof(sockopt_val
))) < 0) {
907 perror("setsockopt");
910 # elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
911 if ((sockopt_val
= num
? IP_PMTUDISC_PROBE
: IP_PMTUDISC_DONT
),
912 (ret
= setsockopt(b
->num
, IPPROTO_IPV6
, IPV6_MTU_DISCOVER
,
913 &sockopt_val
, sizeof(sockopt_val
))) < 0) {
914 perror("setsockopt");
927 case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD
:
928 ret
= dgram_get_mtu_overhead(data
);
930 case BIO_CTRL_DGRAM_SET_PEEK_MODE
:
931 data
->peekmode
= (unsigned int)num
;
940 static int dgram_puts(BIO
*bp
, const char *str
)
945 ret
= dgram_write(bp
, str
, n
);
949 # ifndef OPENSSL_NO_SCTP
950 BIO_METHOD
*BIO_s_datagram_sctp(void)
952 return (&methods_dgramp_sctp
);
955 BIO
*BIO_new_dgram_sctp(int fd
, int close_flag
)
958 int ret
, optval
= 20000;
959 int auth_data
= 0, auth_forward
= 0;
961 struct sctp_authchunk auth
;
962 struct sctp_authchunks
*authchunks
;
963 socklen_t sockopt_len
;
964 # ifdef SCTP_AUTHENTICATION_EVENT
966 struct sctp_event event
;
968 struct sctp_event_subscribe event
;
972 bio
= BIO_new(BIO_s_datagram_sctp());
975 BIO_set_fd(bio
, fd
, close_flag
);
977 /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
978 auth
.sauth_chunk
= OPENSSL_SCTP_DATA_CHUNK_TYPE
;
980 setsockopt(fd
, IPPROTO_SCTP
, SCTP_AUTH_CHUNK
, &auth
,
981 sizeof(struct sctp_authchunk
));
986 auth
.sauth_chunk
= OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE
;
988 setsockopt(fd
, IPPROTO_SCTP
, SCTP_AUTH_CHUNK
, &auth
,
989 sizeof(struct sctp_authchunk
));
996 * Test if activation was successful. When using accept(), SCTP-AUTH has
997 * to be activated for the listening socket already, otherwise the
998 * connected socket won't use it.
1000 sockopt_len
= (socklen_t
) (sizeof(sctp_assoc_t
) + 256 * sizeof(uint8_t));
1001 authchunks
= OPENSSL_zalloc(sockopt_len
);
1006 ret
= getsockopt(fd
, IPPROTO_SCTP
, SCTP_LOCAL_AUTH_CHUNKS
, authchunks
,
1009 OPENSSL_free(authchunks
);
1014 for (p
= (unsigned char *)authchunks
->gauth_chunks
;
1015 p
< (unsigned char *)authchunks
+ sockopt_len
;
1016 p
+= sizeof(uint8_t)) {
1017 if (*p
== OPENSSL_SCTP_DATA_CHUNK_TYPE
)
1019 if (*p
== OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE
)
1023 OPENSSL_free(authchunks
);
1025 OPENSSL_assert(auth_data
);
1026 OPENSSL_assert(auth_forward
);
1028 # ifdef SCTP_AUTHENTICATION_EVENT
1030 memset(&event
, 0, sizeof(event
));
1031 event
.se_assoc_id
= 0;
1032 event
.se_type
= SCTP_AUTHENTICATION_EVENT
;
1035 setsockopt(fd
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1036 sizeof(struct sctp_event
));
1042 sockopt_len
= (socklen_t
) sizeof(struct sctp_event_subscribe
);
1043 ret
= getsockopt(fd
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
, &sockopt_len
);
1049 event
.sctp_authentication_event
= 1;
1052 setsockopt(fd
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1053 sizeof(struct sctp_event_subscribe
));
1062 * Disable partial delivery by setting the min size larger than the max
1063 * record size of 2^14 + 2048 + 13
1066 setsockopt(fd
, IPPROTO_SCTP
, SCTP_PARTIAL_DELIVERY_POINT
, &optval
,
1076 int BIO_dgram_is_sctp(BIO
*bio
)
1078 return (BIO_method_type(bio
) == BIO_TYPE_DGRAM_SCTP
);
1081 static int dgram_sctp_new(BIO
*bi
)
1083 bio_dgram_sctp_data
*data
= NULL
;
1087 data
= OPENSSL_zalloc(sizeof(*data
));
1090 # ifdef SCTP_PR_SCTP_NONE
1091 data
->prinfo
.pr_policy
= SCTP_PR_SCTP_NONE
;
1099 static int dgram_sctp_free(BIO
*a
)
1101 bio_dgram_sctp_data
*data
;
1105 if (!dgram_clear(a
))
1108 data
= (bio_dgram_sctp_data
*) a
->ptr
;
1110 OPENSSL_free(data
->saved_message
.data
);
1117 # ifdef SCTP_AUTHENTICATION_EVENT
1118 void dgram_sctp_handle_auth_free_key_event(BIO
*b
,
1119 union sctp_notification
*snp
)
1122 struct sctp_authkey_event
*authkeyevent
= &snp
->sn_auth_event
;
1124 if (authkeyevent
->auth_indication
== SCTP_AUTH_FREE_KEY
) {
1125 struct sctp_authkeyid authkeyid
;
1128 authkeyid
.scact_keynumber
= authkeyevent
->auth_keynumber
;
1129 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_DELETE_KEY
,
1130 &authkeyid
, sizeof(struct sctp_authkeyid
));
1135 static int dgram_sctp_read(BIO
*b
, char *out
, int outl
)
1137 int ret
= 0, n
= 0, i
, optval
;
1139 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1140 union sctp_notification
*snp
;
1143 struct cmsghdr
*cmsg
;
1147 clear_socket_error();
1150 memset(&data
->rcvinfo
, 0, sizeof(data
->rcvinfo
));
1153 msg
.msg_name
= NULL
;
1154 msg
.msg_namelen
= 0;
1157 msg
.msg_control
= cmsgbuf
;
1158 msg
.msg_controllen
= 512;
1160 n
= recvmsg(b
->num
, &msg
, 0);
1168 if (msg
.msg_controllen
> 0) {
1169 for (cmsg
= CMSG_FIRSTHDR(&msg
); cmsg
;
1170 cmsg
= CMSG_NXTHDR(&msg
, cmsg
)) {
1171 if (cmsg
->cmsg_level
!= IPPROTO_SCTP
)
1173 # ifdef SCTP_RCVINFO
1174 if (cmsg
->cmsg_type
== SCTP_RCVINFO
) {
1175 struct sctp_rcvinfo
*rcvinfo
;
1177 rcvinfo
= (struct sctp_rcvinfo
*)CMSG_DATA(cmsg
);
1178 data
->rcvinfo
.rcv_sid
= rcvinfo
->rcv_sid
;
1179 data
->rcvinfo
.rcv_ssn
= rcvinfo
->rcv_ssn
;
1180 data
->rcvinfo
.rcv_flags
= rcvinfo
->rcv_flags
;
1181 data
->rcvinfo
.rcv_ppid
= rcvinfo
->rcv_ppid
;
1182 data
->rcvinfo
.rcv_tsn
= rcvinfo
->rcv_tsn
;
1183 data
->rcvinfo
.rcv_cumtsn
= rcvinfo
->rcv_cumtsn
;
1184 data
->rcvinfo
.rcv_context
= rcvinfo
->rcv_context
;
1188 if (cmsg
->cmsg_type
== SCTP_SNDRCV
) {
1189 struct sctp_sndrcvinfo
*sndrcvinfo
;
1192 (struct sctp_sndrcvinfo
*)CMSG_DATA(cmsg
);
1193 data
->rcvinfo
.rcv_sid
= sndrcvinfo
->sinfo_stream
;
1194 data
->rcvinfo
.rcv_ssn
= sndrcvinfo
->sinfo_ssn
;
1195 data
->rcvinfo
.rcv_flags
= sndrcvinfo
->sinfo_flags
;
1196 data
->rcvinfo
.rcv_ppid
= sndrcvinfo
->sinfo_ppid
;
1197 data
->rcvinfo
.rcv_tsn
= sndrcvinfo
->sinfo_tsn
;
1198 data
->rcvinfo
.rcv_cumtsn
= sndrcvinfo
->sinfo_cumtsn
;
1199 data
->rcvinfo
.rcv_context
= sndrcvinfo
->sinfo_context
;
1205 if (msg
.msg_flags
& MSG_NOTIFICATION
) {
1206 snp
= (union sctp_notification
*)out
;
1207 if (snp
->sn_header
.sn_type
== SCTP_SENDER_DRY_EVENT
) {
1209 struct sctp_event event
;
1211 struct sctp_event_subscribe event
;
1212 socklen_t eventsize
;
1215 * If a message has been delayed until the socket is dry,
1216 * it can be sent now.
1218 if (data
->saved_message
.length
> 0) {
1219 i
= dgram_sctp_write(data
->saved_message
.bio
,
1220 data
->saved_message
.data
,
1221 data
->saved_message
.length
);
1226 OPENSSL_free(data
->saved_message
.data
);
1227 data
->saved_message
.data
= NULL
;
1228 data
->saved_message
.length
= 0;
1231 /* disable sender dry event */
1233 memset(&event
, 0, sizeof(event
));
1234 event
.se_assoc_id
= 0;
1235 event
.se_type
= SCTP_SENDER_DRY_EVENT
;
1237 i
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1238 sizeof(struct sctp_event
));
1244 eventsize
= sizeof(struct sctp_event_subscribe
);
1245 i
= getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1252 event
.sctp_sender_dry_event
= 0;
1254 i
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1255 sizeof(struct sctp_event_subscribe
));
1262 # ifdef SCTP_AUTHENTICATION_EVENT
1263 if (snp
->sn_header
.sn_type
== SCTP_AUTHENTICATION_EVENT
)
1264 dgram_sctp_handle_auth_free_key_event(b
, snp
);
1267 if (data
->handle_notifications
!= NULL
)
1268 data
->handle_notifications(b
, data
->notification_context
,
1271 memset(out
, 0, outl
);
1275 while ((msg
.msg_flags
& MSG_NOTIFICATION
) && (msg
.msg_flags
& MSG_EOR
)
1278 if (ret
> 0 && !(msg
.msg_flags
& MSG_EOR
)) {
1279 /* Partial message read, this should never happen! */
1282 * The buffer was too small, this means the peer sent a message
1283 * that was larger than allowed.
1289 * Test if socket buffer can handle max record size (2^14 + 2048
1292 optlen
= (socklen_t
) sizeof(int);
1293 ret
= getsockopt(b
->num
, SOL_SOCKET
, SO_RCVBUF
, &optval
, &optlen
);
1295 OPENSSL_assert(optval
>= 18445);
1298 * Test if SCTP doesn't partially deliver below max record size
1299 * (2^14 + 2048 + 13)
1301 optlen
= (socklen_t
) sizeof(int);
1303 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_PARTIAL_DELIVERY_POINT
,
1306 OPENSSL_assert(optval
>= 18445);
1309 * Partially delivered notification??? Probably a bug....
1311 OPENSSL_assert(!(msg
.msg_flags
& MSG_NOTIFICATION
));
1314 * Everything seems ok till now, so it's most likely a message
1315 * dropped by PR-SCTP.
1317 memset(out
, 0, outl
);
1318 BIO_set_retry_read(b
);
1322 BIO_clear_retry_flags(b
);
1324 if (BIO_dgram_should_retry(ret
)) {
1325 BIO_set_retry_read(b
);
1326 data
->_errno
= get_last_socket_error();
1330 /* Test if peer uses SCTP-AUTH before continuing */
1331 if (!data
->peer_auth_tested
) {
1332 int ii
, auth_data
= 0, auth_forward
= 0;
1334 struct sctp_authchunks
*authchunks
;
1337 (socklen_t
) (sizeof(sctp_assoc_t
) + 256 * sizeof(uint8_t));
1338 authchunks
= OPENSSL_malloc(optlen
);
1340 BIOerr(BIO_F_DGRAM_SCTP_READ
, ERR_R_MALLOC_FAILURE
);
1343 memset(authchunks
, 0, optlen
);
1344 ii
= getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_PEER_AUTH_CHUNKS
,
1345 authchunks
, &optlen
);
1348 for (p
= (unsigned char *)authchunks
->gauth_chunks
;
1349 p
< (unsigned char *)authchunks
+ optlen
;
1350 p
+= sizeof(uint8_t)) {
1351 if (*p
== OPENSSL_SCTP_DATA_CHUNK_TYPE
)
1353 if (*p
== OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE
)
1357 OPENSSL_free(authchunks
);
1359 if (!auth_data
|| !auth_forward
) {
1360 BIOerr(BIO_F_DGRAM_SCTP_READ
, BIO_R_CONNECT_ERROR
);
1364 data
->peer_auth_tested
= 1;
1371 * dgram_sctp_write - send message on SCTP socket
1372 * @b: BIO to write to
1374 * @inl: amount of bytes in @in to send
1376 * Returns -1 on error or the sent amount of bytes on success
1378 static int dgram_sctp_write(BIO
*b
, const char *in
, int inl
)
1381 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1382 struct bio_dgram_sctp_sndinfo
*sinfo
= &(data
->sndinfo
);
1383 struct bio_dgram_sctp_prinfo
*pinfo
= &(data
->prinfo
);
1384 struct bio_dgram_sctp_sndinfo handshake_sinfo
;
1385 struct iovec iov
[1];
1387 struct cmsghdr
*cmsg
;
1388 # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1389 char cmsgbuf
[CMSG_SPACE(sizeof(struct sctp_sndinfo
)) +
1390 CMSG_SPACE(sizeof(struct sctp_prinfo
))];
1391 struct sctp_sndinfo
*sndinfo
;
1392 struct sctp_prinfo
*prinfo
;
1394 char cmsgbuf
[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo
))];
1395 struct sctp_sndrcvinfo
*sndrcvinfo
;
1398 clear_socket_error();
1401 * If we're send anything else than application data, disable all user
1402 * parameters and flags.
1405 memset(&handshake_sinfo
, 0, sizeof(handshake_sinfo
));
1406 # ifdef SCTP_SACK_IMMEDIATELY
1407 handshake_sinfo
.snd_flags
= SCTP_SACK_IMMEDIATELY
;
1409 sinfo
= &handshake_sinfo
;
1413 * If we have to send a shutdown alert message and the socket is not dry
1414 * yet, we have to save it and send it as soon as the socket gets dry.
1416 if (data
->save_shutdown
) {
1417 ret
= BIO_dgram_sctp_wait_for_dry(b
);
1423 data
->saved_message
.bio
= b
;
1424 if ((tmp
= OPENSSL_malloc(inl
)) == NULL
) {
1425 BIOerr(BIO_F_DGRAM_SCTP_WRITE
, ERR_R_MALLOC_FAILURE
);
1428 OPENSSL_free(data
->saved_message
.data
);
1429 data
->saved_message
.data
= tmp
;
1430 memcpy(data
->saved_message
.data
, in
, inl
);
1431 data
->saved_message
.length
= inl
;
1436 iov
[0].iov_base
= (char *)in
;
1437 iov
[0].iov_len
= inl
;
1438 msg
.msg_name
= NULL
;
1439 msg
.msg_namelen
= 0;
1442 msg
.msg_control
= (caddr_t
) cmsgbuf
;
1443 msg
.msg_controllen
= 0;
1445 # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1446 cmsg
= (struct cmsghdr
*)cmsgbuf
;
1447 cmsg
->cmsg_level
= IPPROTO_SCTP
;
1448 cmsg
->cmsg_type
= SCTP_SNDINFO
;
1449 cmsg
->cmsg_len
= CMSG_LEN(sizeof(struct sctp_sndinfo
));
1450 sndinfo
= (struct sctp_sndinfo
*)CMSG_DATA(cmsg
);
1451 memset(sndinfo
, 0, sizeof(*sndinfo
));
1452 sndinfo
->snd_sid
= sinfo
->snd_sid
;
1453 sndinfo
->snd_flags
= sinfo
->snd_flags
;
1454 sndinfo
->snd_ppid
= sinfo
->snd_ppid
;
1455 sndinfo
->snd_context
= sinfo
->snd_context
;
1456 msg
.msg_controllen
+= CMSG_SPACE(sizeof(struct sctp_sndinfo
));
1459 (struct cmsghdr
*)&cmsgbuf
[CMSG_SPACE(sizeof(struct sctp_sndinfo
))];
1460 cmsg
->cmsg_level
= IPPROTO_SCTP
;
1461 cmsg
->cmsg_type
= SCTP_PRINFO
;
1462 cmsg
->cmsg_len
= CMSG_LEN(sizeof(struct sctp_prinfo
));
1463 prinfo
= (struct sctp_prinfo
*)CMSG_DATA(cmsg
);
1464 memset(prinfo
, 0, sizeof(*prinfo
));
1465 prinfo
->pr_policy
= pinfo
->pr_policy
;
1466 prinfo
->pr_value
= pinfo
->pr_value
;
1467 msg
.msg_controllen
+= CMSG_SPACE(sizeof(struct sctp_prinfo
));
1469 cmsg
= (struct cmsghdr
*)cmsgbuf
;
1470 cmsg
->cmsg_level
= IPPROTO_SCTP
;
1471 cmsg
->cmsg_type
= SCTP_SNDRCV
;
1472 cmsg
->cmsg_len
= CMSG_LEN(sizeof(struct sctp_sndrcvinfo
));
1473 sndrcvinfo
= (struct sctp_sndrcvinfo
*)CMSG_DATA(cmsg
);
1474 memset(sndrcvinfo
, 0, sizeof(*sndrcvinfo
));
1475 sndrcvinfo
->sinfo_stream
= sinfo
->snd_sid
;
1476 sndrcvinfo
->sinfo_flags
= sinfo
->snd_flags
;
1478 sndrcvinfo
->sinfo_flags
|= pinfo
->pr_policy
;
1480 sndrcvinfo
->sinfo_ppid
= sinfo
->snd_ppid
;
1481 sndrcvinfo
->sinfo_context
= sinfo
->snd_context
;
1482 sndrcvinfo
->sinfo_timetolive
= pinfo
->pr_value
;
1483 msg
.msg_controllen
+= CMSG_SPACE(sizeof(struct sctp_sndrcvinfo
));
1486 ret
= sendmsg(b
->num
, &msg
, 0);
1488 BIO_clear_retry_flags(b
);
1490 if (BIO_dgram_should_retry(ret
)) {
1491 BIO_set_retry_write(b
);
1492 data
->_errno
= get_last_socket_error();
1498 static long dgram_sctp_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
1501 bio_dgram_sctp_data
*data
= NULL
;
1502 socklen_t sockopt_len
= 0;
1503 struct sctp_authkeyid authkeyid
;
1504 struct sctp_authkey
*authkey
= NULL
;
1506 data
= (bio_dgram_sctp_data
*) b
->ptr
;
1509 case BIO_CTRL_DGRAM_QUERY_MTU
:
1511 * Set to maximum (2^14) and ignore user input to enable transport
1512 * protocol fragmentation. Returns always 2^14.
1517 case BIO_CTRL_DGRAM_SET_MTU
:
1519 * Set to maximum (2^14) and ignore input to enable transport
1520 * protocol fragmentation. Returns always 2^14.
1525 case BIO_CTRL_DGRAM_SET_CONNECTED
:
1526 case BIO_CTRL_DGRAM_CONNECT
:
1527 /* Returns always -1. */
1530 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT
:
1532 * SCTP doesn't need the DTLS timer Returns always 1.
1535 case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD
:
1537 * We allow transport protocol fragmentation so this is irrelevant
1541 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE
:
1543 data
->in_handshake
= 1;
1545 data
->in_handshake
= 0;
1548 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_NODELAY
,
1549 &data
->in_handshake
, sizeof(int));
1551 case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY
:
1553 * New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise.
1556 /* Get active key */
1557 sockopt_len
= sizeof(struct sctp_authkeyid
);
1559 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
, &authkeyid
,
1565 sockopt_len
= sizeof(struct sctp_authkey
) + 64 * sizeof(uint8_t);
1566 authkey
= OPENSSL_malloc(sockopt_len
);
1567 if (authkey
== NULL
) {
1571 memset(authkey
, 0, sockopt_len
);
1572 authkey
->sca_keynumber
= authkeyid
.scact_keynumber
+ 1;
1573 # ifndef __FreeBSD__
1575 * This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3
1576 * and higher work without it.
1578 authkey
->sca_keylength
= 64;
1580 memcpy(&authkey
->sca_key
[0], ptr
, 64 * sizeof(uint8_t));
1583 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_KEY
, authkey
,
1585 OPENSSL_free(authkey
);
1590 /* Reset active key */
1591 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
,
1592 &authkeyid
, sizeof(struct sctp_authkeyid
));
1597 case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY
:
1598 /* Returns 0 on success, -1 otherwise. */
1600 /* Get active key */
1601 sockopt_len
= sizeof(struct sctp_authkeyid
);
1603 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
, &authkeyid
,
1608 /* Set active key */
1609 authkeyid
.scact_keynumber
= authkeyid
.scact_keynumber
+ 1;
1610 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
,
1611 &authkeyid
, sizeof(struct sctp_authkeyid
));
1616 * CCS has been sent, so remember that and fall through to check if
1617 * we need to deactivate an old key
1621 case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD
:
1622 /* Returns 0 on success, -1 otherwise. */
1625 * Has this command really been called or is this just a
1628 if (cmd
== BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD
)
1632 * CSS has been both, received and sent, so deactivate an old key
1634 if (data
->ccs_rcvd
== 1 && data
->ccs_sent
== 1) {
1635 /* Get active key */
1636 sockopt_len
= sizeof(struct sctp_authkeyid
);
1638 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_ACTIVE_KEY
,
1639 &authkeyid
, &sockopt_len
);
1644 * Deactivate key or delete second last key if
1645 * SCTP_AUTHENTICATION_EVENT is not available.
1647 authkeyid
.scact_keynumber
= authkeyid
.scact_keynumber
- 1;
1648 # ifdef SCTP_AUTH_DEACTIVATE_KEY
1649 sockopt_len
= sizeof(struct sctp_authkeyid
);
1650 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_DEACTIVATE_KEY
,
1651 &authkeyid
, sockopt_len
);
1655 # ifndef SCTP_AUTHENTICATION_EVENT
1656 if (authkeyid
.scact_keynumber
> 0) {
1657 authkeyid
.scact_keynumber
= authkeyid
.scact_keynumber
- 1;
1658 ret
= setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_AUTH_DELETE_KEY
,
1659 &authkeyid
, sizeof(struct sctp_authkeyid
));
1669 case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO
:
1670 /* Returns the size of the copied struct. */
1671 if (num
> (long)sizeof(struct bio_dgram_sctp_sndinfo
))
1672 num
= sizeof(struct bio_dgram_sctp_sndinfo
);
1674 memcpy(ptr
, &(data
->sndinfo
), num
);
1677 case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO
:
1678 /* Returns the size of the copied struct. */
1679 if (num
> (long)sizeof(struct bio_dgram_sctp_sndinfo
))
1680 num
= sizeof(struct bio_dgram_sctp_sndinfo
);
1682 memcpy(&(data
->sndinfo
), ptr
, num
);
1684 case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO
:
1685 /* Returns the size of the copied struct. */
1686 if (num
> (long)sizeof(struct bio_dgram_sctp_rcvinfo
))
1687 num
= sizeof(struct bio_dgram_sctp_rcvinfo
);
1689 memcpy(ptr
, &data
->rcvinfo
, num
);
1693 case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO
:
1694 /* Returns the size of the copied struct. */
1695 if (num
> (long)sizeof(struct bio_dgram_sctp_rcvinfo
))
1696 num
= sizeof(struct bio_dgram_sctp_rcvinfo
);
1698 memcpy(&(data
->rcvinfo
), ptr
, num
);
1700 case BIO_CTRL_DGRAM_SCTP_GET_PRINFO
:
1701 /* Returns the size of the copied struct. */
1702 if (num
> (long)sizeof(struct bio_dgram_sctp_prinfo
))
1703 num
= sizeof(struct bio_dgram_sctp_prinfo
);
1705 memcpy(ptr
, &(data
->prinfo
), num
);
1708 case BIO_CTRL_DGRAM_SCTP_SET_PRINFO
:
1709 /* Returns the size of the copied struct. */
1710 if (num
> (long)sizeof(struct bio_dgram_sctp_prinfo
))
1711 num
= sizeof(struct bio_dgram_sctp_prinfo
);
1713 memcpy(&(data
->prinfo
), ptr
, num
);
1715 case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN
:
1716 /* Returns always 1. */
1718 data
->save_shutdown
= 1;
1720 data
->save_shutdown
= 0;
1725 * Pass to default ctrl function to process SCTP unspecific commands
1727 ret
= dgram_ctrl(b
, cmd
, num
, ptr
);
1733 int BIO_dgram_sctp_notification_cb(BIO
*b
,
1734 void (*handle_notifications
) (BIO
*bio
,
1740 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1742 if (handle_notifications
!= NULL
) {
1743 data
->handle_notifications
= handle_notifications
;
1744 data
->notification_context
= context
;
1752 * BIO_dgram_sctp_wait_for_dry - Wait for SCTP SENDER_DRY event
1753 * @b: The BIO to check for the dry event
1755 * Wait until the peer confirms all packets have been received, and so that
1756 * our kernel doesn't have anything to send anymore. This is only received by
1757 * the peer's kernel, not the application.
1761 * 0 when not dry yet
1764 int BIO_dgram_sctp_wait_for_dry(BIO
*b
)
1767 int n
, sockflags
, ret
;
1768 union sctp_notification snp
;
1772 struct sctp_event event
;
1774 struct sctp_event_subscribe event
;
1775 socklen_t eventsize
;
1777 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1779 /* set sender dry event */
1781 memset(&event
, 0, sizeof(event
));
1782 event
.se_assoc_id
= 0;
1783 event
.se_type
= SCTP_SENDER_DRY_EVENT
;
1786 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1787 sizeof(struct sctp_event
));
1789 eventsize
= sizeof(struct sctp_event_subscribe
);
1790 ret
= getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
, &eventsize
);
1794 event
.sctp_sender_dry_event
= 1;
1797 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1798 sizeof(struct sctp_event_subscribe
));
1803 /* peek for notification */
1804 memset(&snp
, 0, sizeof(snp
));
1805 iov
.iov_base
= (char *)&snp
;
1806 iov
.iov_len
= sizeof(union sctp_notification
);
1807 msg
.msg_name
= NULL
;
1808 msg
.msg_namelen
= 0;
1811 msg
.msg_control
= NULL
;
1812 msg
.msg_controllen
= 0;
1815 n
= recvmsg(b
->num
, &msg
, MSG_PEEK
);
1817 if ((n
< 0) && (get_last_socket_error() != EAGAIN
)
1818 && (get_last_socket_error() != EWOULDBLOCK
))
1824 /* if we find a notification, process it and try again if necessary */
1825 while (msg
.msg_flags
& MSG_NOTIFICATION
) {
1826 memset(&snp
, 0, sizeof(snp
));
1827 iov
.iov_base
= (char *)&snp
;
1828 iov
.iov_len
= sizeof(union sctp_notification
);
1829 msg
.msg_name
= NULL
;
1830 msg
.msg_namelen
= 0;
1833 msg
.msg_control
= NULL
;
1834 msg
.msg_controllen
= 0;
1837 n
= recvmsg(b
->num
, &msg
, 0);
1839 if ((n
< 0) && (get_last_socket_error() != EAGAIN
)
1840 && (get_last_socket_error() != EWOULDBLOCK
))
1846 if (snp
.sn_header
.sn_type
== SCTP_SENDER_DRY_EVENT
) {
1849 /* disable sender dry event */
1851 memset(&event
, 0, sizeof(event
));
1852 event
.se_assoc_id
= 0;
1853 event
.se_type
= SCTP_SENDER_DRY_EVENT
;
1856 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENT
, &event
,
1857 sizeof(struct sctp_event
));
1859 eventsize
= (socklen_t
) sizeof(struct sctp_event_subscribe
);
1861 getsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1866 event
.sctp_sender_dry_event
= 0;
1869 setsockopt(b
->num
, IPPROTO_SCTP
, SCTP_EVENTS
, &event
,
1870 sizeof(struct sctp_event_subscribe
));
1875 # ifdef SCTP_AUTHENTICATION_EVENT
1876 if (snp
.sn_header
.sn_type
== SCTP_AUTHENTICATION_EVENT
)
1877 dgram_sctp_handle_auth_free_key_event(b
, &snp
);
1880 if (data
->handle_notifications
!= NULL
)
1881 data
->handle_notifications(b
, data
->notification_context
,
1884 /* found notification, peek again */
1885 memset(&snp
, 0, sizeof(snp
));
1886 iov
.iov_base
= (char *)&snp
;
1887 iov
.iov_len
= sizeof(union sctp_notification
);
1888 msg
.msg_name
= NULL
;
1889 msg
.msg_namelen
= 0;
1892 msg
.msg_control
= NULL
;
1893 msg
.msg_controllen
= 0;
1896 /* if we have seen the dry already, don't wait */
1898 sockflags
= fcntl(b
->num
, F_GETFL
, 0);
1899 fcntl(b
->num
, F_SETFL
, O_NONBLOCK
);
1902 n
= recvmsg(b
->num
, &msg
, MSG_PEEK
);
1905 fcntl(b
->num
, F_SETFL
, sockflags
);
1909 if ((n
< 0) && (get_last_socket_error() != EAGAIN
)
1910 && (get_last_socket_error() != EWOULDBLOCK
))
1917 /* read anything else */
1921 int BIO_dgram_sctp_msg_waiting(BIO
*b
)
1924 union sctp_notification snp
;
1927 bio_dgram_sctp_data
*data
= (bio_dgram_sctp_data
*) b
->ptr
;
1929 /* Check if there are any messages waiting to be read */
1931 memset(&snp
, 0, sizeof(snp
));
1932 iov
.iov_base
= (char *)&snp
;
1933 iov
.iov_len
= sizeof(union sctp_notification
);
1934 msg
.msg_name
= NULL
;
1935 msg
.msg_namelen
= 0;
1938 msg
.msg_control
= NULL
;
1939 msg
.msg_controllen
= 0;
1942 sockflags
= fcntl(b
->num
, F_GETFL
, 0);
1943 fcntl(b
->num
, F_SETFL
, O_NONBLOCK
);
1944 n
= recvmsg(b
->num
, &msg
, MSG_PEEK
);
1945 fcntl(b
->num
, F_SETFL
, sockflags
);
1947 /* if notification, process and try again */
1948 if (n
> 0 && (msg
.msg_flags
& MSG_NOTIFICATION
)) {
1949 # ifdef SCTP_AUTHENTICATION_EVENT
1950 if (snp
.sn_header
.sn_type
== SCTP_AUTHENTICATION_EVENT
)
1951 dgram_sctp_handle_auth_free_key_event(b
, &snp
);
1954 memset(&snp
, 0, sizeof(snp
));
1955 iov
.iov_base
= (char *)&snp
;
1956 iov
.iov_len
= sizeof(union sctp_notification
);
1957 msg
.msg_name
= NULL
;
1958 msg
.msg_namelen
= 0;
1961 msg
.msg_control
= NULL
;
1962 msg
.msg_controllen
= 0;
1964 n
= recvmsg(b
->num
, &msg
, 0);
1966 if (data
->handle_notifications
!= NULL
)
1967 data
->handle_notifications(b
, data
->notification_context
,
1971 } while (n
> 0 && (msg
.msg_flags
& MSG_NOTIFICATION
));
1973 /* Return 1 if there is a message to be read, return 0 otherwise. */
1980 static int dgram_sctp_puts(BIO
*bp
, const char *str
)
1985 ret
= dgram_sctp_write(bp
, str
, n
);
1990 static int BIO_dgram_should_retry(int i
)
1994 if ((i
== 0) || (i
== -1)) {
1995 err
= get_last_socket_error();
1997 # if defined(OPENSSL_SYS_WINDOWS)
1999 * If the socket return value (i) is -1 and err is unexpectedly 0 at
2000 * this point, the error code was overwritten by another system call
2001 * before this error handling is called.
2005 return (BIO_dgram_non_fatal_error(err
));
2010 int BIO_dgram_non_fatal_error(int err
)
2013 # if defined(OPENSSL_SYS_WINDOWS)
2014 # if defined(WSAEWOULDBLOCK)
2015 case WSAEWOULDBLOCK
:
2020 # ifdef WSAEWOULDBLOCK
2021 # if WSAEWOULDBLOCK != EWOULDBLOCK
2034 # if EWOULDBLOCK != EAGAIN
2059 static void get_current_time(struct timeval
*t
)
2061 # if defined(_WIN32)
2064 unsigned __int64 ul
;
2069 SystemTimeToFileTime(&st
, &now
.ft
);
2071 now
.ul
-= 116444736000000000ULL;
2073 now
.ul
-= 116444736000000000UI
64; /* re-bias to 1/1/1970 */
2075 t
->tv_sec
= (long)(now
.ul
/ 10000000);
2076 t
->tv_usec
= ((int)(now
.ul
% 10000000)) / 10;
2077 # elif defined(OPENSSL_SYS_VMS)
2080 t
->tv_sec
= (long)tb
.time
;
2081 t
->tv_usec
= (long)tb
.millitm
* 1000;
2083 gettimeofday(t
, NULL
);