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Don't use msg on error.
[thirdparty/openssl.git] / crypto / bio / bss_dgram.c
1 /* crypto/bio/bio_dgram.c */
2 /*
3 * DTLS implementation written by Nagendra Modadugu
4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5 */
6 /* ====================================================================
7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
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
19 * distribution.
20 *
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/)"
25 *
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.
30 *
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.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
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 * ====================================================================
53 *
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).
57 *
58 */
59
60
61 #include <stdio.h>
62 #include <errno.h>
63 #define USE_SOCKETS
64 #include "cryptlib.h"
65
66 #include <openssl/bio.h>
67 #ifndef OPENSSL_NO_DGRAM
68
69 #if defined(OPENSSL_SYS_VMS)
70 #include <sys/timeb.h>
71 #endif
72
73 #ifndef OPENSSL_NO_SCTP
74 #include <netinet/sctp.h>
75 #include <fcntl.h>
76 #define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
77 #define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
78 #endif
79
80 #if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
81 #define IP_MTU 14 /* linux is lame */
82 #endif
83
84 #if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
85 #define IPPROTO_IPV6 41 /* windows is lame */
86 #endif
87
88 #if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
89 /* Standard definition causes type-punning problems. */
90 #undef IN6_IS_ADDR_V4MAPPED
91 #define s6_addr32 __u6_addr.__u6_addr32
92 #define IN6_IS_ADDR_V4MAPPED(a) \
93 (((a)->s6_addr32[0] == 0) && \
94 ((a)->s6_addr32[1] == 0) && \
95 ((a)->s6_addr32[2] == htonl(0x0000ffff)))
96 #endif
97
98 #ifdef WATT32
99 #define sock_write SockWrite /* Watt-32 uses same names */
100 #define sock_read SockRead
101 #define sock_puts SockPuts
102 #endif
103
104 static int dgram_write(BIO *h, const char *buf, int num);
105 static int dgram_read(BIO *h, char *buf, int size);
106 static int dgram_puts(BIO *h, const char *str);
107 static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
108 static int dgram_new(BIO *h);
109 static int dgram_free(BIO *data);
110 static int dgram_clear(BIO *bio);
111
112 #ifndef OPENSSL_NO_SCTP
113 static int dgram_sctp_write(BIO *h, const char *buf, int num);
114 static int dgram_sctp_read(BIO *h, char *buf, int size);
115 static int dgram_sctp_puts(BIO *h, const char *str);
116 static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2);
117 static int dgram_sctp_new(BIO *h);
118 static int dgram_sctp_free(BIO *data);
119 #ifdef SCTP_AUTHENTICATION_EVENT
120 static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification *snp);
121 #endif
122 #endif
123
124 static int BIO_dgram_should_retry(int s);
125
126 static void get_current_time(struct timeval *t);
127
128 static BIO_METHOD methods_dgramp=
129 {
130 BIO_TYPE_DGRAM,
131 "datagram socket",
132 dgram_write,
133 dgram_read,
134 dgram_puts,
135 NULL, /* dgram_gets, */
136 dgram_ctrl,
137 dgram_new,
138 dgram_free,
139 NULL,
140 };
141
142 #ifndef OPENSSL_NO_SCTP
143 static BIO_METHOD methods_dgramp_sctp=
144 {
145 BIO_TYPE_DGRAM_SCTP,
146 "datagram sctp socket",
147 dgram_sctp_write,
148 dgram_sctp_read,
149 dgram_sctp_puts,
150 NULL, /* dgram_gets, */
151 dgram_sctp_ctrl,
152 dgram_sctp_new,
153 dgram_sctp_free,
154 NULL,
155 };
156 #endif
157
158 typedef struct bio_dgram_data_st
159 {
160 union {
161 struct sockaddr sa;
162 struct sockaddr_in sa_in;
163 #if OPENSSL_USE_IPV6
164 struct sockaddr_in6 sa_in6;
165 #endif
166 } peer;
167 unsigned int connected;
168 unsigned int _errno;
169 unsigned int mtu;
170 struct timeval next_timeout;
171 struct timeval socket_timeout;
172 } bio_dgram_data;
173
174 #ifndef OPENSSL_NO_SCTP
175 typedef struct bio_dgram_sctp_save_message_st
176 {
177 BIO *bio;
178 char *data;
179 int length;
180 } bio_dgram_sctp_save_message;
181
182 typedef struct bio_dgram_sctp_data_st
183 {
184 union {
185 struct sockaddr sa;
186 struct sockaddr_in sa_in;
187 #if OPENSSL_USE_IPV6
188 struct sockaddr_in6 sa_in6;
189 #endif
190 } peer;
191 unsigned int connected;
192 unsigned int _errno;
193 unsigned int mtu;
194 struct bio_dgram_sctp_sndinfo sndinfo;
195 struct bio_dgram_sctp_rcvinfo rcvinfo;
196 struct bio_dgram_sctp_prinfo prinfo;
197 void (*handle_notifications)(BIO *bio, void *context, void *buf);
198 void* notification_context;
199 int in_handshake;
200 int ccs_rcvd;
201 int ccs_sent;
202 int save_shutdown;
203 int peer_auth_tested;
204 bio_dgram_sctp_save_message saved_message;
205 } bio_dgram_sctp_data;
206 #endif
207
208 BIO_METHOD *BIO_s_datagram(void)
209 {
210 return(&methods_dgramp);
211 }
212
213 BIO *BIO_new_dgram(int fd, int close_flag)
214 {
215 BIO *ret;
216
217 ret=BIO_new(BIO_s_datagram());
218 if (ret == NULL) return(NULL);
219 BIO_set_fd(ret,fd,close_flag);
220 return(ret);
221 }
222
223 static int dgram_new(BIO *bi)
224 {
225 bio_dgram_data *data = NULL;
226
227 bi->init=0;
228 bi->num=0;
229 data = OPENSSL_malloc(sizeof(bio_dgram_data));
230 if (data == NULL)
231 return 0;
232 memset(data, 0x00, sizeof(bio_dgram_data));
233 bi->ptr = data;
234
235 bi->flags=0;
236 return(1);
237 }
238
239 static int dgram_free(BIO *a)
240 {
241 bio_dgram_data *data;
242
243 if (a == NULL) return(0);
244 if ( ! dgram_clear(a))
245 return 0;
246
247 data = (bio_dgram_data *)a->ptr;
248 if(data != NULL) OPENSSL_free(data);
249
250 return(1);
251 }
252
253 static int dgram_clear(BIO *a)
254 {
255 if (a == NULL) return(0);
256 if (a->shutdown)
257 {
258 if (a->init)
259 {
260 SHUTDOWN2(a->num);
261 }
262 a->init=0;
263 a->flags=0;
264 }
265 return(1);
266 }
267
268 static void dgram_adjust_rcv_timeout(BIO *b)
269 {
270 #if defined(SO_RCVTIMEO)
271 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
272 union { size_t s; int i; } sz = {0};
273
274 /* Is a timer active? */
275 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
276 {
277 struct timeval timenow, timeleft;
278
279 /* Read current socket timeout */
280 #ifdef OPENSSL_SYS_WINDOWS
281 int timeout;
282
283 sz.i = sizeof(timeout);
284 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
285 (void*)&timeout, &sz.i) < 0)
286 { perror("getsockopt"); }
287 else
288 {
289 data->socket_timeout.tv_sec = timeout / 1000;
290 data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
291 }
292 #else
293 sz.i = sizeof(data->socket_timeout);
294 if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
295 &(data->socket_timeout), (void *)&sz) < 0)
296 { perror("getsockopt"); }
297 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
298 OPENSSL_assert(sz.s<=sizeof(data->socket_timeout));
299 #endif
300
301 /* Get current time */
302 get_current_time(&timenow);
303
304 /* Calculate time left until timer expires */
305 memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
306 timeleft.tv_sec -= timenow.tv_sec;
307 timeleft.tv_usec -= timenow.tv_usec;
308 if (timeleft.tv_usec < 0)
309 {
310 timeleft.tv_sec--;
311 timeleft.tv_usec += 1000000;
312 }
313
314 if (timeleft.tv_sec < 0)
315 {
316 timeleft.tv_sec = 0;
317 timeleft.tv_usec = 1;
318 }
319
320 /* Adjust socket timeout if next handhake message timer
321 * will expire earlier.
322 */
323 if ((data->socket_timeout.tv_sec == 0 && data->socket_timeout.tv_usec == 0) ||
324 (data->socket_timeout.tv_sec > timeleft.tv_sec) ||
325 (data->socket_timeout.tv_sec == timeleft.tv_sec &&
326 data->socket_timeout.tv_usec >= timeleft.tv_usec))
327 {
328 #ifdef OPENSSL_SYS_WINDOWS
329 timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
330 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
331 (void*)&timeout, sizeof(timeout)) < 0)
332 { perror("setsockopt"); }
333 #else
334 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
335 sizeof(struct timeval)) < 0)
336 { perror("setsockopt"); }
337 #endif
338 }
339 }
340 #endif
341 }
342
343 static void dgram_reset_rcv_timeout(BIO *b)
344 {
345 #if defined(SO_RCVTIMEO)
346 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
347
348 /* Is a timer active? */
349 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
350 {
351 #ifdef OPENSSL_SYS_WINDOWS
352 int timeout = data->socket_timeout.tv_sec * 1000 +
353 data->socket_timeout.tv_usec / 1000;
354 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
355 (void*)&timeout, sizeof(timeout)) < 0)
356 { perror("setsockopt"); }
357 #else
358 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
359 sizeof(struct timeval)) < 0)
360 { perror("setsockopt"); }
361 #endif
362 }
363 #endif
364 }
365
366 static int dgram_read(BIO *b, char *out, int outl)
367 {
368 int ret=0;
369 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
370
371 struct {
372 /*
373 * See commentary in b_sock.c. <appro>
374 */
375 union { size_t s; int i; } len;
376 union {
377 struct sockaddr sa;
378 struct sockaddr_in sa_in;
379 #if OPENSSL_USE_IPV6
380 struct sockaddr_in6 sa_in6;
381 #endif
382 } peer;
383 } sa;
384
385 sa.len.s=0;
386 sa.len.i=sizeof(sa.peer);
387
388 if (out != NULL)
389 {
390 clear_socket_error();
391 memset(&sa.peer, 0x00, sizeof(sa.peer));
392 dgram_adjust_rcv_timeout(b);
393 ret=recvfrom(b->num,out,outl,0,&sa.peer.sa,(void *)&sa.len);
394 if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0)
395 {
396 OPENSSL_assert(sa.len.s<=sizeof(sa.peer));
397 sa.len.i = (int)sa.len.s;
398 }
399
400 if ( ! data->connected && ret >= 0)
401 BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &sa.peer);
402
403 BIO_clear_retry_flags(b);
404 if (ret < 0)
405 {
406 if (BIO_dgram_should_retry(ret))
407 {
408 BIO_set_retry_read(b);
409 data->_errno = get_last_socket_error();
410 }
411 }
412
413 dgram_reset_rcv_timeout(b);
414 }
415 return(ret);
416 }
417
418 static int dgram_write(BIO *b, const char *in, int inl)
419 {
420 int ret;
421 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
422 clear_socket_error();
423
424 if ( data->connected )
425 ret=writesocket(b->num,in,inl);
426 else
427 {
428 int peerlen = sizeof(data->peer);
429
430 if (data->peer.sa.sa_family == AF_INET)
431 peerlen = sizeof(data->peer.sa_in);
432 #if OPENSSL_USE_IPV6
433 else if (data->peer.sa.sa_family == AF_INET6)
434 peerlen = sizeof(data->peer.sa_in6);
435 #endif
436 #if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
437 ret=sendto(b->num, (char *)in, inl, 0, &data->peer.sa, peerlen);
438 #else
439 ret=sendto(b->num, in, inl, 0, &data->peer.sa, peerlen);
440 #endif
441 }
442
443 BIO_clear_retry_flags(b);
444 if (ret <= 0)
445 {
446 if (BIO_dgram_should_retry(ret))
447 {
448 BIO_set_retry_write(b);
449 data->_errno = get_last_socket_error();
450
451 #if 0 /* higher layers are responsible for querying MTU, if necessary */
452 if ( data->_errno == EMSGSIZE)
453 /* retrieve the new MTU */
454 BIO_ctrl(b, BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
455 #endif
456 }
457 }
458 return(ret);
459 }
460
461 static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
462 {
463 long ret=1;
464 int *ip;
465 struct sockaddr *to = NULL;
466 bio_dgram_data *data = NULL;
467 int sockopt_val = 0;
468 #if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
469 socklen_t sockopt_len; /* assume that system supporting IP_MTU is
470 * modern enough to define socklen_t */
471 socklen_t addr_len;
472 union {
473 struct sockaddr sa;
474 struct sockaddr_in s4;
475 #if OPENSSL_USE_IPV6
476 struct sockaddr_in6 s6;
477 #endif
478 } addr;
479 #endif
480
481 data = (bio_dgram_data *)b->ptr;
482
483 switch (cmd)
484 {
485 case BIO_CTRL_RESET:
486 num=0;
487 case BIO_C_FILE_SEEK:
488 ret=0;
489 break;
490 case BIO_C_FILE_TELL:
491 case BIO_CTRL_INFO:
492 ret=0;
493 break;
494 case BIO_C_SET_FD:
495 dgram_clear(b);
496 b->num= *((int *)ptr);
497 b->shutdown=(int)num;
498 b->init=1;
499 break;
500 case BIO_C_GET_FD:
501 if (b->init)
502 {
503 ip=(int *)ptr;
504 if (ip != NULL) *ip=b->num;
505 ret=b->num;
506 }
507 else
508 ret= -1;
509 break;
510 case BIO_CTRL_GET_CLOSE:
511 ret=b->shutdown;
512 break;
513 case BIO_CTRL_SET_CLOSE:
514 b->shutdown=(int)num;
515 break;
516 case BIO_CTRL_PENDING:
517 case BIO_CTRL_WPENDING:
518 ret=0;
519 break;
520 case BIO_CTRL_DUP:
521 case BIO_CTRL_FLUSH:
522 ret=1;
523 break;
524 case BIO_CTRL_DGRAM_CONNECT:
525 to = (struct sockaddr *)ptr;
526 #if 0
527 if (connect(b->num, to, sizeof(struct sockaddr)) < 0)
528 { perror("connect"); ret = 0; }
529 else
530 {
531 #endif
532 switch (to->sa_family)
533 {
534 case AF_INET:
535 memcpy(&data->peer,to,sizeof(data->peer.sa_in));
536 break;
537 #if OPENSSL_USE_IPV6
538 case AF_INET6:
539 memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
540 break;
541 #endif
542 default:
543 memcpy(&data->peer,to,sizeof(data->peer.sa));
544 break;
545 }
546 #if 0
547 }
548 #endif
549 break;
550 /* (Linux)kernel sets DF bit on outgoing IP packets */
551 case BIO_CTRL_DGRAM_MTU_DISCOVER:
552 #if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
553 addr_len = (socklen_t)sizeof(addr);
554 memset((void *)&addr, 0, sizeof(addr));
555 if (getsockname(b->num, &addr.sa, &addr_len) < 0)
556 {
557 ret = 0;
558 break;
559 }
560 switch (addr.sa.sa_family)
561 {
562 case AF_INET:
563 sockopt_val = IP_PMTUDISC_DO;
564 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
565 &sockopt_val, sizeof(sockopt_val))) < 0)
566 perror("setsockopt");
567 break;
568 #if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
569 case AF_INET6:
570 sockopt_val = IPV6_PMTUDISC_DO;
571 if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
572 &sockopt_val, sizeof(sockopt_val))) < 0)
573 perror("setsockopt");
574 break;
575 #endif
576 default:
577 ret = -1;
578 break;
579 }
580 #else
581 ret = -1;
582 #endif
583 break;
584 case BIO_CTRL_DGRAM_QUERY_MTU:
585 #if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
586 addr_len = (socklen_t)sizeof(addr);
587 memset((void *)&addr, 0, sizeof(addr));
588 if (getsockname(b->num, &addr.sa, &addr_len) < 0)
589 {
590 ret = 0;
591 break;
592 }
593 sockopt_len = sizeof(sockopt_val);
594 switch (addr.sa.sa_family)
595 {
596 case AF_INET:
597 if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
598 &sockopt_len)) < 0 || sockopt_val < 0)
599 {
600 ret = 0;
601 }
602 else
603 {
604 /* we assume that the transport protocol is UDP and no
605 * IP options are used.
606 */
607 data->mtu = sockopt_val - 8 - 20;
608 ret = data->mtu;
609 }
610 break;
611 #if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
612 case AF_INET6:
613 if ((ret = getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, (void *)&sockopt_val,
614 &sockopt_len)) < 0 || sockopt_val < 0)
615 {
616 ret = 0;
617 }
618 else
619 {
620 /* we assume that the transport protocol is UDP and no
621 * IPV6 options are used.
622 */
623 data->mtu = sockopt_val - 8 - 40;
624 ret = data->mtu;
625 }
626 break;
627 #endif
628 default:
629 ret = 0;
630 break;
631 }
632 #else
633 ret = 0;
634 #endif
635 break;
636 case BIO_CTRL_DGRAM_GET_FALLBACK_MTU:
637 switch (data->peer.sa.sa_family)
638 {
639 case AF_INET:
640 ret = 576 - 20 - 8;
641 break;
642 #if OPENSSL_USE_IPV6
643 case AF_INET6:
644 #ifdef IN6_IS_ADDR_V4MAPPED
645 if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr))
646 ret = 576 - 20 - 8;
647 else
648 #endif
649 ret = 1280 - 40 - 8;
650 break;
651 #endif
652 default:
653 ret = 576 - 20 - 8;
654 break;
655 }
656 break;
657 case BIO_CTRL_DGRAM_GET_MTU:
658 return data->mtu;
659 break;
660 case BIO_CTRL_DGRAM_SET_MTU:
661 data->mtu = num;
662 ret = num;
663 break;
664 case BIO_CTRL_DGRAM_SET_CONNECTED:
665 to = (struct sockaddr *)ptr;
666
667 if ( to != NULL)
668 {
669 data->connected = 1;
670 switch (to->sa_family)
671 {
672 case AF_INET:
673 memcpy(&data->peer,to,sizeof(data->peer.sa_in));
674 break;
675 #if OPENSSL_USE_IPV6
676 case AF_INET6:
677 memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
678 break;
679 #endif
680 default:
681 memcpy(&data->peer,to,sizeof(data->peer.sa));
682 break;
683 }
684 }
685 else
686 {
687 data->connected = 0;
688 memset(&(data->peer), 0x00, sizeof(data->peer));
689 }
690 break;
691 case BIO_CTRL_DGRAM_GET_PEER:
692 switch (data->peer.sa.sa_family)
693 {
694 case AF_INET:
695 ret=sizeof(data->peer.sa_in);
696 break;
697 #if OPENSSL_USE_IPV6
698 case AF_INET6:
699 ret=sizeof(data->peer.sa_in6);
700 break;
701 #endif
702 default:
703 ret=sizeof(data->peer.sa);
704 break;
705 }
706 if (num==0 || num>ret)
707 num=ret;
708 memcpy(ptr,&data->peer,(ret=num));
709 break;
710 case BIO_CTRL_DGRAM_SET_PEER:
711 to = (struct sockaddr *) ptr;
712 switch (to->sa_family)
713 {
714 case AF_INET:
715 memcpy(&data->peer,to,sizeof(data->peer.sa_in));
716 break;
717 #if OPENSSL_USE_IPV6
718 case AF_INET6:
719 memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
720 break;
721 #endif
722 default:
723 memcpy(&data->peer,to,sizeof(data->peer.sa));
724 break;
725 }
726 break;
727 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
728 memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));
729 break;
730 #if defined(SO_RCVTIMEO)
731 case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:
732 #ifdef OPENSSL_SYS_WINDOWS
733 {
734 struct timeval *tv = (struct timeval *)ptr;
735 int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
736 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
737 (void*)&timeout, sizeof(timeout)) < 0)
738 { perror("setsockopt"); ret = -1; }
739 }
740 #else
741 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,
742 sizeof(struct timeval)) < 0)
743 { perror("setsockopt"); ret = -1; }
744 #endif
745 break;
746 case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
747 {
748 union { size_t s; int i; } sz = {0};
749 #ifdef OPENSSL_SYS_WINDOWS
750 int timeout;
751 struct timeval *tv = (struct timeval *)ptr;
752
753 sz.i = sizeof(timeout);
754 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
755 (void*)&timeout, &sz.i) < 0)
756 { perror("getsockopt"); ret = -1; }
757 else
758 {
759 tv->tv_sec = timeout / 1000;
760 tv->tv_usec = (timeout % 1000) * 1000;
761 ret = sizeof(*tv);
762 }
763 #else
764 sz.i = sizeof(struct timeval);
765 if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
766 ptr, (void *)&sz) < 0)
767 { perror("getsockopt"); ret = -1; }
768 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
769 {
770 OPENSSL_assert(sz.s<=sizeof(struct timeval));
771 ret = (int)sz.s;
772 }
773 else
774 ret = sz.i;
775 #endif
776 }
777 break;
778 #endif
779 #if defined(SO_SNDTIMEO)
780 case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:
781 #ifdef OPENSSL_SYS_WINDOWS
782 {
783 struct timeval *tv = (struct timeval *)ptr;
784 int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
785 if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
786 (void*)&timeout, sizeof(timeout)) < 0)
787 { perror("setsockopt"); ret = -1; }
788 }
789 #else
790 if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,
791 sizeof(struct timeval)) < 0)
792 { perror("setsockopt"); ret = -1; }
793 #endif
794 break;
795 case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
796 {
797 union { size_t s; int i; } sz = {0};
798 #ifdef OPENSSL_SYS_WINDOWS
799 int timeout;
800 struct timeval *tv = (struct timeval *)ptr;
801
802 sz.i = sizeof(timeout);
803 if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
804 (void*)&timeout, &sz.i) < 0)
805 { perror("getsockopt"); ret = -1; }
806 else
807 {
808 tv->tv_sec = timeout / 1000;
809 tv->tv_usec = (timeout % 1000) * 1000;
810 ret = sizeof(*tv);
811 }
812 #else
813 sz.i = sizeof(struct timeval);
814 if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
815 ptr, (void *)&sz) < 0)
816 { perror("getsockopt"); ret = -1; }
817 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
818 {
819 OPENSSL_assert(sz.s<=sizeof(struct timeval));
820 ret = (int)sz.s;
821 }
822 else
823 ret = sz.i;
824 #endif
825 }
826 break;
827 #endif
828 case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
829 /* fall-through */
830 case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:
831 #ifdef OPENSSL_SYS_WINDOWS
832 if ( data->_errno == WSAETIMEDOUT)
833 #else
834 if ( data->_errno == EAGAIN)
835 #endif
836 {
837 ret = 1;
838 data->_errno = 0;
839 }
840 else
841 ret = 0;
842 break;
843 #ifdef EMSGSIZE
844 case BIO_CTRL_DGRAM_MTU_EXCEEDED:
845 if ( data->_errno == EMSGSIZE)
846 {
847 ret = 1;
848 data->_errno = 0;
849 }
850 else
851 ret = 0;
852 break;
853 #endif
854 case BIO_CTRL_DGRAM_SET_DONT_FRAG:
855 sockopt_val = num ? 1 : 0;
856
857 switch (data->peer.sa.sa_family)
858 {
859 case AF_INET:
860 #if defined(IP_DONTFRAG)
861 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAG,
862 &sockopt_val, sizeof(sockopt_val))) < 0)
863 { perror("setsockopt"); ret = -1; }
864 #elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTUDISCOVER)
865 if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
866 (ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
867 &sockopt_val, sizeof(sockopt_val))) < 0)
868 { perror("setsockopt"); ret = -1; }
869 #elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT)
870 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAGMENT,
871 (const char *)&sockopt_val, sizeof(sockopt_val))) < 0)
872 { perror("setsockopt"); ret = -1; }
873 #else
874 ret = -1;
875 #endif
876 break;
877 #if OPENSSL_USE_IPV6
878 case AF_INET6:
879 #if defined(IPV6_DONTFRAG)
880 if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG,
881 (const void *)&sockopt_val, sizeof(sockopt_val))) < 0)
882 { perror("setsockopt"); ret = -1; }
883 #elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
884 if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
885 (ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
886 &sockopt_val, sizeof(sockopt_val))) < 0)
887 { perror("setsockopt"); ret = -1; }
888 #else
889 ret = -1;
890 #endif
891 break;
892 #endif
893 default:
894 ret = -1;
895 break;
896 }
897 break;
898 default:
899 ret=0;
900 break;
901 }
902 return(ret);
903 }
904
905 static int dgram_puts(BIO *bp, const char *str)
906 {
907 int n,ret;
908
909 n=strlen(str);
910 ret=dgram_write(bp,str,n);
911 return(ret);
912 }
913
914 #ifndef OPENSSL_NO_SCTP
915 BIO_METHOD *BIO_s_datagram_sctp(void)
916 {
917 return(&methods_dgramp_sctp);
918 }
919
920 BIO *BIO_new_dgram_sctp(int fd, int close_flag)
921 {
922 BIO *bio;
923 int ret, optval = 20000;
924 int auth_data = 0, auth_forward = 0;
925 unsigned char *p;
926 struct sctp_authchunk auth;
927 struct sctp_authchunks *authchunks;
928 socklen_t sockopt_len;
929 #ifdef SCTP_AUTHENTICATION_EVENT
930 #ifdef SCTP_EVENT
931 struct sctp_event event;
932 #else
933 struct sctp_event_subscribe event;
934 #endif
935 #endif
936
937 bio=BIO_new(BIO_s_datagram_sctp());
938 if (bio == NULL) return(NULL);
939 BIO_set_fd(bio,fd,close_flag);
940
941 /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
942 auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE;
943 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct sctp_authchunk));
944 OPENSSL_assert(ret >= 0);
945 auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE;
946 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct sctp_authchunk));
947 OPENSSL_assert(ret >= 0);
948
949 /* Test if activation was successful. When using accept(),
950 * SCTP-AUTH has to be activated for the listening socket
951 * already, otherwise the connected socket won't use it. */
952 sockopt_len = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
953 authchunks = OPENSSL_malloc(sockopt_len);
954 memset(authchunks, 0, sockopt_len);
955 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks, &sockopt_len);
956 OPENSSL_assert(ret >= 0);
957
958 for (p = (unsigned char*) authchunks->gauth_chunks;
959 p < (unsigned char*) authchunks + sockopt_len;
960 p += sizeof(uint8_t))
961 {
962 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1;
963 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward = 1;
964 }
965
966 OPENSSL_free(authchunks);
967
968 OPENSSL_assert(auth_data);
969 OPENSSL_assert(auth_forward);
970
971 #ifdef SCTP_AUTHENTICATION_EVENT
972 #ifdef SCTP_EVENT
973 memset(&event, 0, sizeof(struct sctp_event));
974 event.se_assoc_id = 0;
975 event.se_type = SCTP_AUTHENTICATION_EVENT;
976 event.se_on = 1;
977 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
978 OPENSSL_assert(ret >= 0);
979 #else
980 sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe);
981 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len);
982 OPENSSL_assert(ret >= 0);
983
984 event.sctp_authentication_event = 1;
985
986 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
987 OPENSSL_assert(ret >= 0);
988 #endif
989 #endif
990
991 /* Disable partial delivery by setting the min size
992 * larger than the max record size of 2^14 + 2048 + 13
993 */
994 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval, sizeof(optval));
995 OPENSSL_assert(ret >= 0);
996
997 return(bio);
998 }
999
1000 int BIO_dgram_is_sctp(BIO *bio)
1001 {
1002 return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP);
1003 }
1004
1005 static int dgram_sctp_new(BIO *bi)
1006 {
1007 bio_dgram_sctp_data *data = NULL;
1008
1009 bi->init=0;
1010 bi->num=0;
1011 data = OPENSSL_malloc(sizeof(bio_dgram_sctp_data));
1012 if (data == NULL)
1013 return 0;
1014 memset(data, 0x00, sizeof(bio_dgram_sctp_data));
1015 #ifdef SCTP_PR_SCTP_NONE
1016 data->prinfo.pr_policy = SCTP_PR_SCTP_NONE;
1017 #endif
1018 bi->ptr = data;
1019
1020 bi->flags=0;
1021 return(1);
1022 }
1023
1024 static int dgram_sctp_free(BIO *a)
1025 {
1026 bio_dgram_sctp_data *data;
1027
1028 if (a == NULL) return(0);
1029 if ( ! dgram_clear(a))
1030 return 0;
1031
1032 data = (bio_dgram_sctp_data *)a->ptr;
1033 if(data != NULL) OPENSSL_free(data);
1034
1035 return(1);
1036 }
1037
1038 #ifdef SCTP_AUTHENTICATION_EVENT
1039 void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification *snp)
1040 {
1041 int ret;
1042 struct sctp_authkey_event* authkeyevent = &snp->sn_auth_event;
1043
1044 if (authkeyevent->auth_indication == SCTP_AUTH_FREE_KEY)
1045 {
1046 struct sctp_authkeyid authkeyid;
1047
1048 /* delete key */
1049 authkeyid.scact_keynumber = authkeyevent->auth_keynumber;
1050 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
1051 &authkeyid, sizeof(struct sctp_authkeyid));
1052 }
1053 }
1054 #endif
1055
1056 static int dgram_sctp_read(BIO *b, char *out, int outl)
1057 {
1058 int ret = 0, n = 0, i, optval;
1059 socklen_t optlen;
1060 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1061 union sctp_notification *snp;
1062 struct msghdr msg;
1063 struct iovec iov;
1064 struct cmsghdr *cmsg;
1065 char cmsgbuf[512];
1066
1067 if (out != NULL)
1068 {
1069 clear_socket_error();
1070
1071 do
1072 {
1073 memset(&data->rcvinfo, 0x00, sizeof(struct bio_dgram_sctp_rcvinfo));
1074 iov.iov_base = out;
1075 iov.iov_len = outl;
1076 msg.msg_name = NULL;
1077 msg.msg_namelen = 0;
1078 msg.msg_iov = &iov;
1079 msg.msg_iovlen = 1;
1080 msg.msg_control = cmsgbuf;
1081 msg.msg_controllen = 512;
1082 msg.msg_flags = 0;
1083 n = recvmsg(b->num, &msg, 0);
1084
1085 if (n <= 0)
1086 {
1087 if (n < 0)
1088 ret = n;
1089 break;
1090 }
1091
1092 if (msg.msg_controllen > 0)
1093 {
1094 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1095 {
1096 if (cmsg->cmsg_level != IPPROTO_SCTP)
1097 continue;
1098 #ifdef SCTP_RCVINFO
1099 if (cmsg->cmsg_type == SCTP_RCVINFO)
1100 {
1101 struct sctp_rcvinfo *rcvinfo;
1102
1103 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
1104 data->rcvinfo.rcv_sid = rcvinfo->rcv_sid;
1105 data->rcvinfo.rcv_ssn = rcvinfo->rcv_ssn;
1106 data->rcvinfo.rcv_flags = rcvinfo->rcv_flags;
1107 data->rcvinfo.rcv_ppid = rcvinfo->rcv_ppid;
1108 data->rcvinfo.rcv_tsn = rcvinfo->rcv_tsn;
1109 data->rcvinfo.rcv_cumtsn = rcvinfo->rcv_cumtsn;
1110 data->rcvinfo.rcv_context = rcvinfo->rcv_context;
1111 }
1112 #endif
1113 #ifdef SCTP_SNDRCV
1114 if (cmsg->cmsg_type == SCTP_SNDRCV)
1115 {
1116 struct sctp_sndrcvinfo *sndrcvinfo;
1117
1118 sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
1119 data->rcvinfo.rcv_sid = sndrcvinfo->sinfo_stream;
1120 data->rcvinfo.rcv_ssn = sndrcvinfo->sinfo_ssn;
1121 data->rcvinfo.rcv_flags = sndrcvinfo->sinfo_flags;
1122 data->rcvinfo.rcv_ppid = sndrcvinfo->sinfo_ppid;
1123 data->rcvinfo.rcv_tsn = sndrcvinfo->sinfo_tsn;
1124 data->rcvinfo.rcv_cumtsn = sndrcvinfo->sinfo_cumtsn;
1125 data->rcvinfo.rcv_context = sndrcvinfo->sinfo_context;
1126 }
1127 #endif
1128 }
1129 }
1130
1131 if (msg.msg_flags & MSG_NOTIFICATION)
1132 {
1133 snp = (union sctp_notification*) out;
1134 if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EVENT)
1135 {
1136 #ifdef SCTP_EVENT
1137 struct sctp_event event;
1138 #else
1139 struct sctp_event_subscribe event;
1140 socklen_t eventsize;
1141 #endif
1142 /* If a message has been delayed until the socket
1143 * is dry, it can be sent now.
1144 */
1145 if (data->saved_message.length > 0)
1146 {
1147 dgram_sctp_write(data->saved_message.bio, data->saved_message.data,
1148 data->saved_message.length);
1149 OPENSSL_free(data->saved_message.data);
1150 data->saved_message.length = 0;
1151 }
1152
1153 /* disable sender dry event */
1154 #ifdef SCTP_EVENT
1155 memset(&event, 0, sizeof(struct sctp_event));
1156 event.se_assoc_id = 0;
1157 event.se_type = SCTP_SENDER_DRY_EVENT;
1158 event.se_on = 0;
1159 i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
1160 OPENSSL_assert(i >= 0);
1161 #else
1162 eventsize = sizeof(struct sctp_event_subscribe);
1163 i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1164 OPENSSL_assert(i >= 0);
1165
1166 event.sctp_sender_dry_event = 0;
1167
1168 i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
1169 OPENSSL_assert(i >= 0);
1170 #endif
1171 }
1172
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);
1176 #endif
1177
1178 if (data->handle_notifications != NULL)
1179 data->handle_notifications(b, data->notification_context, (void*) out);
1180
1181 memset(out, 0, outl);
1182 }
1183 else
1184 ret += n;
1185 }
1186 while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR) && (ret < outl));
1187
1188 if (ret > 0 && !(msg.msg_flags & MSG_EOR))
1189 {
1190 /* Partial message read, this should never happen! */
1191
1192 /* The buffer was too small, this means the peer sent
1193 * a message that was larger than allowed. */
1194 if (ret == outl)
1195 return -1;
1196
1197 /* Test if socket buffer can handle max record
1198 * size (2^14 + 2048 + 13)
1199 */
1200 optlen = (socklen_t) sizeof(int);
1201 ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen);
1202 OPENSSL_assert(ret >= 0);
1203 OPENSSL_assert(optval >= 18445);
1204
1205 /* Test if SCTP doesn't partially deliver below
1206 * max record size (2^14 + 2048 + 13)
1207 */
1208 optlen = (socklen_t) sizeof(int);
1209 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
1210 &optval, &optlen);
1211 OPENSSL_assert(ret >= 0);
1212 OPENSSL_assert(optval >= 18445);
1213
1214 /* Partially delivered notification??? Probably a bug.... */
1215 OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION));
1216
1217 /* Everything seems ok till now, so it's most likely
1218 * a message dropped by PR-SCTP.
1219 */
1220 memset(out, 0, outl);
1221 BIO_set_retry_read(b);
1222 return -1;
1223 }
1224
1225 BIO_clear_retry_flags(b);
1226 if (ret < 0)
1227 {
1228 if (BIO_dgram_should_retry(ret))
1229 {
1230 BIO_set_retry_read(b);
1231 data->_errno = get_last_socket_error();
1232 }
1233 }
1234
1235 /* Test if peer uses SCTP-AUTH before continuing */
1236 if (!data->peer_auth_tested)
1237 {
1238 int ii, auth_data = 0, auth_forward = 0;
1239 unsigned char *p;
1240 struct sctp_authchunks *authchunks;
1241
1242 optlen = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
1243 authchunks = OPENSSL_malloc(optlen);
1244 memset(authchunks, 0, optlen);
1245 ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS, authchunks, &optlen);
1246 OPENSSL_assert(ii >= 0);
1247
1248 for (p = (unsigned char*) authchunks->gauth_chunks;
1249 p < (unsigned char*) authchunks + optlen;
1250 p += sizeof(uint8_t))
1251 {
1252 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1;
1253 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward = 1;
1254 }
1255
1256 OPENSSL_free(authchunks);
1257
1258 if (!auth_data || !auth_forward)
1259 {
1260 BIOerr(BIO_F_DGRAM_SCTP_READ,BIO_R_CONNECT_ERROR);
1261 return -1;
1262 }
1263
1264 data->peer_auth_tested = 1;
1265 }
1266 }
1267 return(ret);
1268 }
1269
1270 static int dgram_sctp_write(BIO *b, const char *in, int inl)
1271 {
1272 int ret;
1273 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1274 struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo);
1275 struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo);
1276 struct bio_dgram_sctp_sndinfo handshake_sinfo;
1277 struct iovec iov[1];
1278 struct msghdr msg;
1279 struct cmsghdr *cmsg;
1280 #if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1281 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) + CMSG_SPACE(sizeof(struct sctp_prinfo))];
1282 struct sctp_sndinfo *sndinfo;
1283 struct sctp_prinfo *prinfo;
1284 #else
1285 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
1286 struct sctp_sndrcvinfo *sndrcvinfo;
1287 #endif
1288
1289 clear_socket_error();
1290
1291 /* If we're send anything else than application data,
1292 * disable all user parameters and flags.
1293 */
1294 if (in[0] != 23) {
1295 memset(&handshake_sinfo, 0x00, sizeof(struct bio_dgram_sctp_sndinfo));
1296 #ifdef SCTP_SACK_IMMEDIATELY
1297 handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY;
1298 #endif
1299 sinfo = &handshake_sinfo;
1300 }
1301
1302 /* If we have to send a shutdown alert message and the
1303 * socket is not dry yet, we have to save it and send it
1304 * as soon as the socket gets dry.
1305 */
1306 if (data->save_shutdown && !BIO_dgram_sctp_wait_for_dry(b))
1307 {
1308 data->saved_message.bio = b;
1309 data->saved_message.length = inl;
1310 data->saved_message.data = OPENSSL_malloc(inl);
1311 memcpy(data->saved_message.data, in, inl);
1312 return inl;
1313 }
1314
1315 iov[0].iov_base = (char *)in;
1316 iov[0].iov_len = inl;
1317 msg.msg_name = NULL;
1318 msg.msg_namelen = 0;
1319 msg.msg_iov = iov;
1320 msg.msg_iovlen = 1;
1321 msg.msg_control = (caddr_t)cmsgbuf;
1322 msg.msg_controllen = 0;
1323 msg.msg_flags = 0;
1324 #if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1325 cmsg = (struct cmsghdr *)cmsgbuf;
1326 cmsg->cmsg_level = IPPROTO_SCTP;
1327 cmsg->cmsg_type = SCTP_SNDINFO;
1328 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1329 sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg);
1330 memset(sndinfo, 0, sizeof(struct sctp_sndinfo));
1331 sndinfo->snd_sid = sinfo->snd_sid;
1332 sndinfo->snd_flags = sinfo->snd_flags;
1333 sndinfo->snd_ppid = sinfo->snd_ppid;
1334 sndinfo->snd_context = sinfo->snd_context;
1335 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1336
1337 cmsg = (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))];
1338 cmsg->cmsg_level = IPPROTO_SCTP;
1339 cmsg->cmsg_type = SCTP_PRINFO;
1340 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1341 prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg);
1342 memset(prinfo, 0, sizeof(struct sctp_prinfo));
1343 prinfo->pr_policy = pinfo->pr_policy;
1344 prinfo->pr_value = pinfo->pr_value;
1345 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1346 #else
1347 cmsg = (struct cmsghdr *)cmsgbuf;
1348 cmsg->cmsg_level = IPPROTO_SCTP;
1349 cmsg->cmsg_type = SCTP_SNDRCV;
1350 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
1351 sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
1352 memset(sndrcvinfo, 0, sizeof(struct sctp_sndrcvinfo));
1353 sndrcvinfo->sinfo_stream = sinfo->snd_sid;
1354 sndrcvinfo->sinfo_flags = sinfo->snd_flags;
1355 #ifdef __FreeBSD__
1356 sndrcvinfo->sinfo_flags |= pinfo->pr_policy;
1357 #endif
1358 sndrcvinfo->sinfo_ppid = sinfo->snd_ppid;
1359 sndrcvinfo->sinfo_context = sinfo->snd_context;
1360 sndrcvinfo->sinfo_timetolive = pinfo->pr_value;
1361 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
1362 #endif
1363
1364 ret = sendmsg(b->num, &msg, 0);
1365
1366 BIO_clear_retry_flags(b);
1367 if (ret <= 0)
1368 {
1369 if (BIO_dgram_should_retry(ret))
1370 {
1371 BIO_set_retry_write(b);
1372 data->_errno = get_last_socket_error();
1373 }
1374 }
1375 return(ret);
1376 }
1377
1378 static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr)
1379 {
1380 long ret=1;
1381 bio_dgram_sctp_data *data = NULL;
1382 socklen_t sockopt_len = 0;
1383 struct sctp_authkeyid authkeyid;
1384 struct sctp_authkey *authkey = NULL;
1385
1386 data = (bio_dgram_sctp_data *)b->ptr;
1387
1388 switch (cmd)
1389 {
1390 case BIO_CTRL_DGRAM_QUERY_MTU:
1391 /* Set to maximum (2^14)
1392 * and ignore user input to enable transport
1393 * protocol fragmentation.
1394 * Returns always 2^14.
1395 */
1396 data->mtu = 16384;
1397 ret = data->mtu;
1398 break;
1399 case BIO_CTRL_DGRAM_SET_MTU:
1400 /* Set to maximum (2^14)
1401 * and ignore input to enable transport
1402 * protocol fragmentation.
1403 * Returns always 2^14.
1404 */
1405 data->mtu = 16384;
1406 ret = data->mtu;
1407 break;
1408 case BIO_CTRL_DGRAM_SET_CONNECTED:
1409 case BIO_CTRL_DGRAM_CONNECT:
1410 /* Returns always -1. */
1411 ret = -1;
1412 break;
1413 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
1414 /* SCTP doesn't need the DTLS timer
1415 * Returns always 1.
1416 */
1417 break;
1418 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
1419 if (num > 0)
1420 data->in_handshake = 1;
1421 else
1422 data->in_handshake = 0;
1423
1424 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY, &data->in_handshake, sizeof(int));
1425 break;
1426 case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY:
1427 /* New shared key for SCTP AUTH.
1428 * Returns 0 on success, -1 otherwise.
1429 */
1430
1431 /* Get active key */
1432 sockopt_len = sizeof(struct sctp_authkeyid);
1433 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, &sockopt_len);
1434 if (ret < 0) break;
1435
1436 /* Add new key */
1437 sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t);
1438 authkey = OPENSSL_malloc(sockopt_len);
1439 if (authkey == NULL)
1440 {
1441 ret = -1;
1442 break;
1443 }
1444 memset(authkey, 0x00, sockopt_len);
1445 authkey->sca_keynumber = authkeyid.scact_keynumber + 1;
1446 #ifndef __FreeBSD__
1447 /* This field is missing in FreeBSD 8.2 and earlier,
1448 * and FreeBSD 8.3 and higher work without it.
1449 */
1450 authkey->sca_keylength = 64;
1451 #endif
1452 memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t));
1453
1454 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey, sockopt_len);
1455 OPENSSL_free(authkey);
1456 authkey = NULL;
1457 if (ret < 0) break;
1458
1459 /* Reset active key */
1460 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1461 &authkeyid, sizeof(struct sctp_authkeyid));
1462 if (ret < 0) break;
1463
1464 break;
1465 case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY:
1466 /* Returns 0 on success, -1 otherwise. */
1467
1468 /* Get active key */
1469 sockopt_len = sizeof(struct sctp_authkeyid);
1470 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, &sockopt_len);
1471 if (ret < 0) break;
1472
1473 /* Set active key */
1474 authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1;
1475 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1476 &authkeyid, sizeof(struct sctp_authkeyid));
1477 if (ret < 0) break;
1478
1479 /* CCS has been sent, so remember that and fall through
1480 * to check if we need to deactivate an old key
1481 */
1482 data->ccs_sent = 1;
1483
1484 case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD:
1485 /* Returns 0 on success, -1 otherwise. */
1486
1487 /* Has this command really been called or is this just a fall-through? */
1488 if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD)
1489 data->ccs_rcvd = 1;
1490
1491 /* CSS has been both, received and sent, so deactivate an old key */
1492 if (data->ccs_rcvd == 1 && data->ccs_sent == 1)
1493 {
1494 /* Get active key */
1495 sockopt_len = sizeof(struct sctp_authkeyid);
1496 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, &sockopt_len);
1497 if (ret < 0) break;
1498
1499 /* Deactivate key or delete second last key if
1500 * SCTP_AUTHENTICATION_EVENT is not available.
1501 */
1502 authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
1503 #ifdef SCTP_AUTH_DEACTIVATE_KEY
1504 sockopt_len = sizeof(struct sctp_authkeyid);
1505 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY,
1506 &authkeyid, sockopt_len);
1507 if (ret < 0) break;
1508 #endif
1509 #ifndef SCTP_AUTHENTICATION_EVENT
1510 if (authkeyid.scact_keynumber > 0)
1511 {
1512 authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
1513 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
1514 &authkeyid, sizeof(struct sctp_authkeyid));
1515 if (ret < 0) break;
1516 }
1517 #endif
1518
1519 data->ccs_rcvd = 0;
1520 data->ccs_sent = 0;
1521 }
1522 break;
1523 case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO:
1524 /* Returns the size of the copied struct. */
1525 if (num > (long) sizeof(struct bio_dgram_sctp_sndinfo))
1526 num = sizeof(struct bio_dgram_sctp_sndinfo);
1527
1528 memcpy(ptr, &(data->sndinfo), num);
1529 ret = num;
1530 break;
1531 case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO:
1532 /* Returns the size of the copied struct. */
1533 if (num > (long) sizeof(struct bio_dgram_sctp_sndinfo))
1534 num = sizeof(struct bio_dgram_sctp_sndinfo);
1535
1536 memcpy(&(data->sndinfo), ptr, num);
1537 break;
1538 case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO:
1539 /* Returns the size of the copied struct. */
1540 if (num > (long) sizeof(struct bio_dgram_sctp_rcvinfo))
1541 num = sizeof(struct bio_dgram_sctp_rcvinfo);
1542
1543 memcpy(ptr, &data->rcvinfo, num);
1544
1545 ret = num;
1546 break;
1547 case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO:
1548 /* Returns the size of the copied struct. */
1549 if (num > (long) sizeof(struct bio_dgram_sctp_rcvinfo))
1550 num = sizeof(struct bio_dgram_sctp_rcvinfo);
1551
1552 memcpy(&(data->rcvinfo), ptr, num);
1553 break;
1554 case BIO_CTRL_DGRAM_SCTP_GET_PRINFO:
1555 /* Returns the size of the copied struct. */
1556 if (num > (long) sizeof(struct bio_dgram_sctp_prinfo))
1557 num = sizeof(struct bio_dgram_sctp_prinfo);
1558
1559 memcpy(ptr, &(data->prinfo), num);
1560 ret = num;
1561 break;
1562 case BIO_CTRL_DGRAM_SCTP_SET_PRINFO:
1563 /* Returns the size of the copied struct. */
1564 if (num > (long) sizeof(struct bio_dgram_sctp_prinfo))
1565 num = sizeof(struct bio_dgram_sctp_prinfo);
1566
1567 memcpy(&(data->prinfo), ptr, num);
1568 break;
1569 case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN:
1570 /* Returns always 1. */
1571 if (num > 0)
1572 data->save_shutdown = 1;
1573 else
1574 data->save_shutdown = 0;
1575 break;
1576
1577 default:
1578 /* Pass to default ctrl function to
1579 * process SCTP unspecific commands
1580 */
1581 ret=dgram_ctrl(b, cmd, num, ptr);
1582 break;
1583 }
1584 return(ret);
1585 }
1586
1587 int BIO_dgram_sctp_notification_cb(BIO *b,
1588 void (*handle_notifications)(BIO *bio, void *context, void *buf),
1589 void *context)
1590 {
1591 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1592
1593 if (handle_notifications != NULL)
1594 {
1595 data->handle_notifications = handle_notifications;
1596 data->notification_context = context;
1597 }
1598 else
1599 return -1;
1600
1601 return 0;
1602 }
1603
1604 int BIO_dgram_sctp_wait_for_dry(BIO *b)
1605 {
1606 int is_dry = 0;
1607 int n, sockflags, ret;
1608 union sctp_notification snp;
1609 struct msghdr msg;
1610 struct iovec iov;
1611 #ifdef SCTP_EVENT
1612 struct sctp_event event;
1613 #else
1614 struct sctp_event_subscribe event;
1615 socklen_t eventsize;
1616 #endif
1617 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1618
1619 /* set sender dry event */
1620 #ifdef SCTP_EVENT
1621 memset(&event, 0, sizeof(struct sctp_event));
1622 event.se_assoc_id = 0;
1623 event.se_type = SCTP_SENDER_DRY_EVENT;
1624 event.se_on = 1;
1625 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
1626 #else
1627 eventsize = sizeof(struct sctp_event_subscribe);
1628 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1629 if (ret < 0)
1630 return -1;
1631
1632 event.sctp_sender_dry_event = 1;
1633
1634 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
1635 #endif
1636 if (ret < 0)
1637 return -1;
1638
1639 /* peek for notification */
1640 memset(&snp, 0x00, sizeof(union sctp_notification));
1641 iov.iov_base = (char *)&snp;
1642 iov.iov_len = sizeof(union sctp_notification);
1643 msg.msg_name = NULL;
1644 msg.msg_namelen = 0;
1645 msg.msg_iov = &iov;
1646 msg.msg_iovlen = 1;
1647 msg.msg_control = NULL;
1648 msg.msg_controllen = 0;
1649 msg.msg_flags = 0;
1650
1651 n = recvmsg(b->num, &msg, MSG_PEEK);
1652 if (n <= 0)
1653 {
1654 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_socket_error() != EWOULDBLOCK))
1655 return -1;
1656 else
1657 return 0;
1658 }
1659
1660 /* if we find a notification, process it and try again if necessary */
1661 while (msg.msg_flags & MSG_NOTIFICATION)
1662 {
1663 memset(&snp, 0x00, sizeof(union sctp_notification));
1664 iov.iov_base = (char *)&snp;
1665 iov.iov_len = sizeof(union sctp_notification);
1666 msg.msg_name = NULL;
1667 msg.msg_namelen = 0;
1668 msg.msg_iov = &iov;
1669 msg.msg_iovlen = 1;
1670 msg.msg_control = NULL;
1671 msg.msg_controllen = 0;
1672 msg.msg_flags = 0;
1673
1674 n = recvmsg(b->num, &msg, 0);
1675 if (n <= 0)
1676 {
1677 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_socket_error() != EWOULDBLOCK))
1678 return -1;
1679 else
1680 return is_dry;
1681 }
1682
1683 if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT)
1684 {
1685 is_dry = 1;
1686
1687 /* disable sender dry event */
1688 #ifdef SCTP_EVENT
1689 memset(&event, 0, sizeof(struct sctp_event));
1690 event.se_assoc_id = 0;
1691 event.se_type = SCTP_SENDER_DRY_EVENT;
1692 event.se_on = 0;
1693 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
1694 #else
1695 eventsize = (socklen_t) sizeof(struct sctp_event_subscribe);
1696 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1697 if (ret < 0)
1698 return -1;
1699
1700 event.sctp_sender_dry_event = 0;
1701
1702 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
1703 #endif
1704 if (ret < 0)
1705 return -1;
1706 }
1707
1708 #ifdef SCTP_AUTHENTICATION_EVENT
1709 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1710 dgram_sctp_handle_auth_free_key_event(b, &snp);
1711 #endif
1712
1713 if (data->handle_notifications != NULL)
1714 data->handle_notifications(b, data->notification_context, (void*) &snp);
1715
1716 /* found notification, peek again */
1717 memset(&snp, 0x00, sizeof(union sctp_notification));
1718 iov.iov_base = (char *)&snp;
1719 iov.iov_len = sizeof(union sctp_notification);
1720 msg.msg_name = NULL;
1721 msg.msg_namelen = 0;
1722 msg.msg_iov = &iov;
1723 msg.msg_iovlen = 1;
1724 msg.msg_control = NULL;
1725 msg.msg_controllen = 0;
1726 msg.msg_flags = 0;
1727
1728 /* if we have seen the dry already, don't wait */
1729 if (is_dry)
1730 {
1731 sockflags = fcntl(b->num, F_GETFL, 0);
1732 fcntl(b->num, F_SETFL, O_NONBLOCK);
1733 }
1734
1735 n = recvmsg(b->num, &msg, MSG_PEEK);
1736
1737 if (is_dry)
1738 {
1739 fcntl(b->num, F_SETFL, sockflags);
1740 }
1741
1742 if (n <= 0)
1743 {
1744 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_socket_error() != EWOULDBLOCK))
1745 return -1;
1746 else
1747 return is_dry;
1748 }
1749 }
1750
1751 /* read anything else */
1752 return is_dry;
1753 }
1754
1755 int BIO_dgram_sctp_msg_waiting(BIO *b)
1756 {
1757 int n, sockflags;
1758 union sctp_notification snp;
1759 struct msghdr msg;
1760 struct iovec iov;
1761 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1762
1763 /* Check if there are any messages waiting to be read */
1764 do
1765 {
1766 memset(&snp, 0x00, sizeof(union sctp_notification));
1767 iov.iov_base = (char *)&snp;
1768 iov.iov_len = sizeof(union sctp_notification);
1769 msg.msg_name = NULL;
1770 msg.msg_namelen = 0;
1771 msg.msg_iov = &iov;
1772 msg.msg_iovlen = 1;
1773 msg.msg_control = NULL;
1774 msg.msg_controllen = 0;
1775 msg.msg_flags = 0;
1776
1777 sockflags = fcntl(b->num, F_GETFL, 0);
1778 fcntl(b->num, F_SETFL, O_NONBLOCK);
1779 n = recvmsg(b->num, &msg, MSG_PEEK);
1780 fcntl(b->num, F_SETFL, sockflags);
1781
1782 /* if notification, process and try again */
1783 if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION))
1784 {
1785 #ifdef SCTP_AUTHENTICATION_EVENT
1786 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1787 dgram_sctp_handle_auth_free_key_event(b, &snp);
1788 #endif
1789
1790 memset(&snp, 0x00, sizeof(union sctp_notification));
1791 iov.iov_base = (char *)&snp;
1792 iov.iov_len = sizeof(union sctp_notification);
1793 msg.msg_name = NULL;
1794 msg.msg_namelen = 0;
1795 msg.msg_iov = &iov;
1796 msg.msg_iovlen = 1;
1797 msg.msg_control = NULL;
1798 msg.msg_controllen = 0;
1799 msg.msg_flags = 0;
1800 n = recvmsg(b->num, &msg, 0);
1801
1802 if (data->handle_notifications != NULL)
1803 data->handle_notifications(b, data->notification_context, (void*) &snp);
1804 }
1805
1806 } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION));
1807
1808 /* Return 1 if there is a message to be read, return 0 otherwise. */
1809 if (n > 0)
1810 return 1;
1811 else
1812 return 0;
1813 }
1814
1815 static int dgram_sctp_puts(BIO *bp, const char *str)
1816 {
1817 int n,ret;
1818
1819 n=strlen(str);
1820 ret=dgram_sctp_write(bp,str,n);
1821 return(ret);
1822 }
1823 #endif
1824
1825 static int BIO_dgram_should_retry(int i)
1826 {
1827 int err;
1828
1829 if ((i == 0) || (i == -1))
1830 {
1831 err=get_last_socket_error();
1832
1833 #if defined(OPENSSL_SYS_WINDOWS)
1834 /* If the socket return value (i) is -1
1835 * and err is unexpectedly 0 at this point,
1836 * the error code was overwritten by
1837 * another system call before this error
1838 * handling is called.
1839 */
1840 #endif
1841
1842 return(BIO_dgram_non_fatal_error(err));
1843 }
1844 return(0);
1845 }
1846
1847 int BIO_dgram_non_fatal_error(int err)
1848 {
1849 switch (err)
1850 {
1851 #if defined(OPENSSL_SYS_WINDOWS)
1852 # if defined(WSAEWOULDBLOCK)
1853 case WSAEWOULDBLOCK:
1854 # endif
1855
1856 # if 0 /* This appears to always be an error */
1857 # if defined(WSAENOTCONN)
1858 case WSAENOTCONN:
1859 # endif
1860 # endif
1861 #endif
1862
1863 #ifdef EWOULDBLOCK
1864 # ifdef WSAEWOULDBLOCK
1865 # if WSAEWOULDBLOCK != EWOULDBLOCK
1866 case EWOULDBLOCK:
1867 # endif
1868 # else
1869 case EWOULDBLOCK:
1870 # endif
1871 #endif
1872
1873 #ifdef EINTR
1874 case EINTR:
1875 #endif
1876
1877 #ifdef EAGAIN
1878 #if EWOULDBLOCK != EAGAIN
1879 case EAGAIN:
1880 # endif
1881 #endif
1882
1883 #ifdef EPROTO
1884 case EPROTO:
1885 #endif
1886
1887 #ifdef EINPROGRESS
1888 case EINPROGRESS:
1889 #endif
1890
1891 #ifdef EALREADY
1892 case EALREADY:
1893 #endif
1894
1895 return(1);
1896 /* break; */
1897 default:
1898 break;
1899 }
1900 return(0);
1901 }
1902
1903 static void get_current_time(struct timeval *t)
1904 {
1905 #if defined(_WIN32)
1906 SYSTEMTIME st;
1907 union { unsigned __int64 ul; FILETIME ft; } now;
1908
1909 GetSystemTime(&st);
1910 SystemTimeToFileTime(&st,&now.ft);
1911 #ifdef __MINGW32__
1912 now.ul -= 116444736000000000ULL;
1913 #else
1914 now.ul -= 116444736000000000UI64; /* re-bias to 1/1/1970 */
1915 #endif
1916 t->tv_sec = (long)(now.ul/10000000);
1917 t->tv_usec = ((int)(now.ul%10000000))/10;
1918 #elif defined(OPENSSL_SYS_VMS)
1919 struct timeb tb;
1920 ftime(&tb);
1921 t->tv_sec = (long)tb.time;
1922 t->tv_usec = (long)tb.millitm * 1000;
1923 #else
1924 gettimeofday(t, NULL);
1925 #endif
1926 }
1927
1928 #endif
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