]> git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/bio/bss_dgram.c
projects / thirdparty / openssl.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
bss_dgram.c: fix unaligned access
[thirdparty/openssl.git] / crypto / bio / bss_dgram.c
1 /*
2 * Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include <errno.h>
12
13 #include "bio_local.h"
14 #ifndef OPENSSL_NO_DGRAM
15
16 # ifndef OPENSSL_NO_SCTP
17 # include <netinet/sctp.h>
18 # include <fcntl.h>
19 # define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00
20 # define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
21 # endif
22
23 # if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
24 # define IP_MTU 14 /* linux is lame */
25 # endif
26
27 # if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
28 # define IPPROTO_IPV6 41 /* windows is lame */
29 # endif
30
31 # if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
32 /* Standard definition causes type-punning problems. */
33 # undef IN6_IS_ADDR_V4MAPPED
34 # define s6_addr32 __u6_addr.__u6_addr32
35 # define IN6_IS_ADDR_V4MAPPED(a) \
36 (((a)->s6_addr32[0] == 0) && \
37 ((a)->s6_addr32[1] == 0) && \
38 ((a)->s6_addr32[2] == htonl(0x0000ffff)))
39 # endif
40
41 static int dgram_write(BIO *h, const char *buf, int num);
42 static int dgram_read(BIO *h, char *buf, int size);
43 static int dgram_puts(BIO *h, const char *str);
44 static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
45 static int dgram_new(BIO *h);
46 static int dgram_free(BIO *data);
47 static int dgram_clear(BIO *bio);
48
49 # ifndef OPENSSL_NO_SCTP
50 static int dgram_sctp_write(BIO *h, const char *buf, int num);
51 static int dgram_sctp_read(BIO *h, char *buf, int size);
52 static int dgram_sctp_puts(BIO *h, const char *str);
53 static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2);
54 static int dgram_sctp_new(BIO *h);
55 static int dgram_sctp_free(BIO *data);
56 static int dgram_sctp_wait_for_dry(BIO *b);
57 static int dgram_sctp_msg_waiting(BIO *b);
58 # ifdef SCTP_AUTHENTICATION_EVENT
59 static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification
60 *snp);
61 # endif
62 # endif
63
64 static int BIO_dgram_should_retry(int s);
65
66 static void get_current_time(struct timeval *t);
67
68 static const BIO_METHOD methods_dgramp = {
69 BIO_TYPE_DGRAM,
70 "datagram socket",
71 /* TODO: Convert to new style write function */
72 bwrite_conv,
73 dgram_write,
74 /* TODO: Convert to new style read function */
75 bread_conv,
76 dgram_read,
77 dgram_puts,
78 NULL, /* dgram_gets, */
79 dgram_ctrl,
80 dgram_new,
81 dgram_free,
82 NULL, /* dgram_callback_ctrl */
83 };
84
85 # ifndef OPENSSL_NO_SCTP
86 static const BIO_METHOD methods_dgramp_sctp = {
87 BIO_TYPE_DGRAM_SCTP,
88 "datagram sctp socket",
89 /* TODO: Convert to new style write function */
90 bwrite_conv,
91 dgram_sctp_write,
92 /* TODO: Convert to new style write function */
93 bread_conv,
94 dgram_sctp_read,
95 dgram_sctp_puts,
96 NULL, /* dgram_gets, */
97 dgram_sctp_ctrl,
98 dgram_sctp_new,
99 dgram_sctp_free,
100 NULL, /* dgram_callback_ctrl */
101 };
102 # endif
103
104 typedef struct bio_dgram_data_st {
105 BIO_ADDR peer;
106 unsigned int connected;
107 unsigned int _errno;
108 unsigned int mtu;
109 struct timeval next_timeout;
110 struct timeval socket_timeout;
111 unsigned int peekmode;
112 } bio_dgram_data;
113
114 # ifndef OPENSSL_NO_SCTP
115 typedef struct bio_dgram_sctp_save_message_st {
116 BIO *bio;
117 char *data;
118 int length;
119 } bio_dgram_sctp_save_message;
120
121 typedef struct bio_dgram_sctp_data_st {
122 BIO_ADDR peer;
123 unsigned int connected;
124 unsigned int _errno;
125 unsigned int mtu;
126 struct bio_dgram_sctp_sndinfo sndinfo;
127 struct bio_dgram_sctp_rcvinfo rcvinfo;
128 struct bio_dgram_sctp_prinfo prinfo;
129 BIO_dgram_sctp_notification_handler_fn handle_notifications;
130 void *notification_context;
131 int in_handshake;
132 int ccs_rcvd;
133 int ccs_sent;
134 int save_shutdown;
135 int peer_auth_tested;
136 } bio_dgram_sctp_data;
137 # endif
138
139 const BIO_METHOD *BIO_s_datagram(void)
140 {
141 return &methods_dgramp;
142 }
143
144 BIO *BIO_new_dgram(int fd, int close_flag)
145 {
146 BIO *ret;
147
148 ret = BIO_new(BIO_s_datagram());
149 if (ret == NULL)
150 return NULL;
151 BIO_set_fd(ret, fd, close_flag);
152 return ret;
153 }
154
155 static int dgram_new(BIO *bi)
156 {
157 bio_dgram_data *data = OPENSSL_zalloc(sizeof(*data));
158
159 if (data == NULL)
160 return 0;
161 bi->ptr = data;
162 return 1;
163 }
164
165 static int dgram_free(BIO *a)
166 {
167 bio_dgram_data *data;
168
169 if (a == NULL)
170 return 0;
171 if (!dgram_clear(a))
172 return 0;
173
174 data = (bio_dgram_data *)a->ptr;
175 OPENSSL_free(data);
176
177 return 1;
178 }
179
180 static int dgram_clear(BIO *a)
181 {
182 if (a == NULL)
183 return 0;
184 if (a->shutdown) {
185 if (a->init) {
186 BIO_closesocket(a->num);
187 }
188 a->init = 0;
189 a->flags = 0;
190 }
191 return 1;
192 }
193
194 static void dgram_adjust_rcv_timeout(BIO *b)
195 {
196 # if defined(SO_RCVTIMEO)
197 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
198 union {
199 size_t s;
200 int i;
201 } sz = {
202 0
203 };
204
205 /* Is a timer active? */
206 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) {
207 struct timeval timenow, timeleft;
208
209 /* Read current socket timeout */
210 # ifdef OPENSSL_SYS_WINDOWS
211 int timeout;
212
213 sz.i = sizeof(timeout);
214 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
215 (void *)&timeout, &sz.i) < 0) {
216 perror("getsockopt");
217 } else {
218 data->socket_timeout.tv_sec = timeout / 1000;
219 data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
220 }
221 # else
222 sz.i = sizeof(data->socket_timeout);
223 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
224 &(data->socket_timeout), (void *)&sz) < 0) {
225 perror("getsockopt");
226 } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0)
227 OPENSSL_assert(sz.s <= sizeof(data->socket_timeout));
228 # endif
229
230 /* Get current time */
231 get_current_time(&timenow);
232
233 /* Calculate time left until timer expires */
234 memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
235 if (timeleft.tv_usec < timenow.tv_usec) {
236 timeleft.tv_usec = 1000000 - timenow.tv_usec + timeleft.tv_usec;
237 timeleft.tv_sec--;
238 } else {
239 timeleft.tv_usec -= timenow.tv_usec;
240 }
241 if (timeleft.tv_sec < timenow.tv_sec) {
242 timeleft.tv_sec = 0;
243 timeleft.tv_usec = 1;
244 } else {
245 timeleft.tv_sec -= timenow.tv_sec;
246 }
247
248 /*
249 * Adjust socket timeout if next handshake message timer will expire
250 * earlier.
251 */
252 if ((data->socket_timeout.tv_sec == 0
253 && data->socket_timeout.tv_usec == 0)
254 || (data->socket_timeout.tv_sec > timeleft.tv_sec)
255 || (data->socket_timeout.tv_sec == timeleft.tv_sec
256 && data->socket_timeout.tv_usec >= timeleft.tv_usec)) {
257 # ifdef OPENSSL_SYS_WINDOWS
258 timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
259 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
260 (void *)&timeout, sizeof(timeout)) < 0) {
261 perror("setsockopt");
262 }
263 # else
264 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
265 sizeof(struct timeval)) < 0) {
266 perror("setsockopt");
267 }
268 # endif
269 }
270 }
271 # endif
272 }
273
274 static void dgram_reset_rcv_timeout(BIO *b)
275 {
276 # if defined(SO_RCVTIMEO)
277 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
278
279 /* Is a timer active? */
280 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) {
281 # ifdef OPENSSL_SYS_WINDOWS
282 int timeout = data->socket_timeout.tv_sec * 1000 +
283 data->socket_timeout.tv_usec / 1000;
284 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
285 (void *)&timeout, sizeof(timeout)) < 0) {
286 perror("setsockopt");
287 }
288 # else
289 if (setsockopt
290 (b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
291 sizeof(struct timeval)) < 0) {
292 perror("setsockopt");
293 }
294 # endif
295 }
296 # endif
297 }
298
299 static int dgram_read(BIO *b, char *out, int outl)
300 {
301 int ret = 0;
302 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
303 int flags = 0;
304
305 BIO_ADDR peer;
306 socklen_t len = sizeof(peer);
307
308 if (out != NULL) {
309 clear_socket_error();
310 memset(&peer, 0, sizeof(peer));
311 dgram_adjust_rcv_timeout(b);
312 if (data->peekmode)
313 flags = MSG_PEEK;
314 ret = recvfrom(b->num, out, outl, flags,
315 BIO_ADDR_sockaddr_noconst(&peer), &len);
316
317 if (!data->connected && ret >= 0)
318 BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &peer);
319
320 BIO_clear_retry_flags(b);
321 if (ret < 0) {
322 if (BIO_dgram_should_retry(ret)) {
323 BIO_set_retry_read(b);
324 data->_errno = get_last_socket_error();
325 }
326 }
327
328 dgram_reset_rcv_timeout(b);
329 }
330 return ret;
331 }
332
333 static int dgram_write(BIO *b, const char *in, int inl)
334 {
335 int ret;
336 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
337 clear_socket_error();
338
339 if (data->connected)
340 ret = writesocket(b->num, in, inl);
341 else {
342 int peerlen = BIO_ADDR_sockaddr_size(&data->peer);
343
344 ret = sendto(b->num, in, inl, 0,
345 BIO_ADDR_sockaddr(&data->peer), peerlen);
346 }
347
348 BIO_clear_retry_flags(b);
349 if (ret <= 0) {
350 if (BIO_dgram_should_retry(ret)) {
351 BIO_set_retry_write(b);
352 data->_errno = get_last_socket_error();
353 }
354 }
355 return ret;
356 }
357
358 static long dgram_get_mtu_overhead(bio_dgram_data *data)
359 {
360 long ret;
361
362 switch (BIO_ADDR_family(&data->peer)) {
363 case AF_INET:
364 /*
365 * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
366 */
367 ret = 28;
368 break;
369 # if OPENSSL_USE_IPV6
370 case AF_INET6:
371 {
372 # ifdef IN6_IS_ADDR_V4MAPPED
373 struct in6_addr tmp_addr;
374 if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL)
375 && IN6_IS_ADDR_V4MAPPED(&tmp_addr))
376 /*
377 * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP
378 */
379 ret = 28;
380 else
381 # endif
382 /*
383 * Assume this is UDP - 40 bytes for IP, 8 bytes for UDP
384 */
385 ret = 48;
386 }
387 break;
388 # endif
389 default:
390 /* We don't know. Go with the historical default */
391 ret = 28;
392 break;
393 }
394 return ret;
395 }
396
397 static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
398 {
399 long ret = 1;
400 int *ip;
401 bio_dgram_data *data = NULL;
402 int sockopt_val = 0;
403 int d_errno;
404 # if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
405 socklen_t sockopt_len; /* assume that system supporting IP_MTU is
406 * modern enough to define socklen_t */
407 socklen_t addr_len;
408 BIO_ADDR addr;
409 # endif
410
411 data = (bio_dgram_data *)b->ptr;
412
413 switch (cmd) {
414 case BIO_CTRL_RESET:
415 num = 0;
416 ret = 0;
417 break;
418 case BIO_CTRL_INFO:
419 ret = 0;
420 break;
421 case BIO_C_SET_FD:
422 dgram_clear(b);
423 b->num = *((int *)ptr);
424 b->shutdown = (int)num;
425 b->init = 1;
426 break;
427 case BIO_C_GET_FD:
428 if (b->init) {
429 ip = (int *)ptr;
430 if (ip != NULL)
431 *ip = b->num;
432 ret = b->num;
433 } else
434 ret = -1;
435 break;
436 case BIO_CTRL_GET_CLOSE:
437 ret = b->shutdown;
438 break;
439 case BIO_CTRL_SET_CLOSE:
440 b->shutdown = (int)num;
441 break;
442 case BIO_CTRL_PENDING:
443 case BIO_CTRL_WPENDING:
444 ret = 0;
445 break;
446 case BIO_CTRL_DUP:
447 case BIO_CTRL_FLUSH:
448 ret = 1;
449 break;
450 case BIO_CTRL_DGRAM_CONNECT:
451 BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr));
452 break;
453 /* (Linux)kernel sets DF bit on outgoing IP packets */
454 case BIO_CTRL_DGRAM_MTU_DISCOVER:
455 # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
456 addr_len = (socklen_t) sizeof(addr);
457 memset(&addr, 0, sizeof(addr));
458 if (getsockname(b->num, &addr.sa, &addr_len) < 0) {
459 ret = 0;
460 break;
461 }
462 switch (addr.sa.sa_family) {
463 case AF_INET:
464 sockopt_val = IP_PMTUDISC_DO;
465 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
466 &sockopt_val, sizeof(sockopt_val))) < 0)
467 perror("setsockopt");
468 break;
469 # if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
470 case AF_INET6:
471 sockopt_val = IPV6_PMTUDISC_DO;
472 if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
473 &sockopt_val, sizeof(sockopt_val))) < 0)
474 perror("setsockopt");
475 break;
476 # endif
477 default:
478 ret = -1;
479 break;
480 }
481 # else
482 ret = -1;
483 # endif
484 break;
485 case BIO_CTRL_DGRAM_QUERY_MTU:
486 # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
487 addr_len = (socklen_t) sizeof(addr);
488 memset(&addr, 0, sizeof(addr));
489 if (getsockname(b->num, &addr.sa, &addr_len) < 0) {
490 ret = 0;
491 break;
492 }
493 sockopt_len = sizeof(sockopt_val);
494 switch (addr.sa.sa_family) {
495 case AF_INET:
496 if ((ret =
497 getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
498 &sockopt_len)) < 0 || sockopt_val < 0) {
499 ret = 0;
500 } else {
501 /*
502 * we assume that the transport protocol is UDP and no IP
503 * options are used.
504 */
505 data->mtu = sockopt_val - 8 - 20;
506 ret = data->mtu;
507 }
508 break;
509 # if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
510 case AF_INET6:
511 if ((ret =
512 getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU,
513 (void *)&sockopt_val, &sockopt_len)) < 0
514 || sockopt_val < 0) {
515 ret = 0;
516 } else {
517 /*
518 * we assume that the transport protocol is UDP and no IPV6
519 * options are used.
520 */
521 data->mtu = sockopt_val - 8 - 40;
522 ret = data->mtu;
523 }
524 break;
525 # endif
526 default:
527 ret = 0;
528 break;
529 }
530 # else
531 ret = 0;
532 # endif
533 break;
534 case BIO_CTRL_DGRAM_GET_FALLBACK_MTU:
535 ret = -dgram_get_mtu_overhead(data);
536 switch (BIO_ADDR_family(&data->peer)) {
537 case AF_INET:
538 ret += 576;
539 break;
540 # if OPENSSL_USE_IPV6
541 case AF_INET6:
542 {
543 # ifdef IN6_IS_ADDR_V4MAPPED
544 struct in6_addr tmp_addr;
545 if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL)
546 && IN6_IS_ADDR_V4MAPPED(&tmp_addr))
547 ret += 576;
548 else
549 # endif
550 ret += 1280;
551 }
552 break;
553 # endif
554 default:
555 ret += 576;
556 break;
557 }
558 break;
559 case BIO_CTRL_DGRAM_GET_MTU:
560 return data->mtu;
561 case BIO_CTRL_DGRAM_SET_MTU:
562 data->mtu = num;
563 ret = num;
564 break;
565 case BIO_CTRL_DGRAM_SET_CONNECTED:
566 if (ptr != NULL) {
567 data->connected = 1;
568 BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr));
569 } else {
570 data->connected = 0;
571 memset(&data->peer, 0, sizeof(data->peer));
572 }
573 break;
574 case BIO_CTRL_DGRAM_GET_PEER:
575 ret = BIO_ADDR_sockaddr_size(&data->peer);
576 /* FIXME: if num < ret, we will only return part of an address.
577 That should bee an error, no? */
578 if (num == 0 || num > ret)
579 num = ret;
580 memcpy(ptr, &data->peer, (ret = num));
581 break;
582 case BIO_CTRL_DGRAM_SET_PEER:
583 BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr));
584 break;
585 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
586 memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));
587 break;
588 # if defined(SO_RCVTIMEO)
589 case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:
590 # ifdef OPENSSL_SYS_WINDOWS
591 {
592 struct timeval *tv = (struct timeval *)ptr;
593 int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000;
594 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
595 (void *)&timeout, sizeof(timeout)) < 0) {
596 perror("setsockopt");
597 ret = -1;
598 }
599 }
600 # else
601 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,
602 sizeof(struct timeval)) < 0) {
603 perror("setsockopt");
604 ret = -1;
605 }
606 # endif
607 break;
608 case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
609 {
610 union {
611 size_t s;
612 int i;
613 } sz = {
614 0
615 };
616 # ifdef OPENSSL_SYS_WINDOWS
617 int timeout;
618 struct timeval *tv = (struct timeval *)ptr;
619
620 sz.i = sizeof(timeout);
621 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
622 (void *)&timeout, &sz.i) < 0) {
623 perror("getsockopt");
624 ret = -1;
625 } else {
626 tv->tv_sec = timeout / 1000;
627 tv->tv_usec = (timeout % 1000) * 1000;
628 ret = sizeof(*tv);
629 }
630 # else
631 sz.i = sizeof(struct timeval);
632 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
633 ptr, (void *)&sz) < 0) {
634 perror("getsockopt");
635 ret = -1;
636 } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) {
637 OPENSSL_assert(sz.s <= sizeof(struct timeval));
638 ret = (int)sz.s;
639 } else
640 ret = sz.i;
641 # endif
642 }
643 break;
644 # endif
645 # if defined(SO_SNDTIMEO)
646 case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:
647 # ifdef OPENSSL_SYS_WINDOWS
648 {
649 struct timeval *tv = (struct timeval *)ptr;
650 int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000;
651 if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
652 (void *)&timeout, sizeof(timeout)) < 0) {
653 perror("setsockopt");
654 ret = -1;
655 }
656 }
657 # else
658 if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,
659 sizeof(struct timeval)) < 0) {
660 perror("setsockopt");
661 ret = -1;
662 }
663 # endif
664 break;
665 case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
666 {
667 union {
668 size_t s;
669 int i;
670 } sz = {
671 0
672 };
673 # ifdef OPENSSL_SYS_WINDOWS
674 int timeout;
675 struct timeval *tv = (struct timeval *)ptr;
676
677 sz.i = sizeof(timeout);
678 if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
679 (void *)&timeout, &sz.i) < 0) {
680 perror("getsockopt");
681 ret = -1;
682 } else {
683 tv->tv_sec = timeout / 1000;
684 tv->tv_usec = (timeout % 1000) * 1000;
685 ret = sizeof(*tv);
686 }
687 # else
688 sz.i = sizeof(struct timeval);
689 if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
690 ptr, (void *)&sz) < 0) {
691 perror("getsockopt");
692 ret = -1;
693 } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) {
694 OPENSSL_assert(sz.s <= sizeof(struct timeval));
695 ret = (int)sz.s;
696 } else
697 ret = sz.i;
698 # endif
699 }
700 break;
701 # endif
702 case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
703 /* fall-through */
704 case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:
705 # ifdef OPENSSL_SYS_WINDOWS
706 d_errno = (data->_errno == WSAETIMEDOUT);
707 # else
708 d_errno = (data->_errno == EAGAIN);
709 # endif
710 if (d_errno) {
711 ret = 1;
712 data->_errno = 0;
713 } else
714 ret = 0;
715 break;
716 # ifdef EMSGSIZE
717 case BIO_CTRL_DGRAM_MTU_EXCEEDED:
718 if (data->_errno == EMSGSIZE) {
719 ret = 1;
720 data->_errno = 0;
721 } else
722 ret = 0;
723 break;
724 # endif
725 case BIO_CTRL_DGRAM_SET_DONT_FRAG:
726 sockopt_val = num ? 1 : 0;
727
728 switch (data->peer.sa.sa_family) {
729 case AF_INET:
730 # if defined(IP_DONTFRAG)
731 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAG,
732 &sockopt_val, sizeof(sockopt_val))) < 0) {
733 perror("setsockopt");
734 ret = -1;
735 }
736 # elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined (IP_PMTUDISC_PROBE)
737 if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
738 (ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
739 &sockopt_val, sizeof(sockopt_val))) < 0) {
740 perror("setsockopt");
741 ret = -1;
742 }
743 # elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT)
744 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAGMENT,
745 (const char *)&sockopt_val,
746 sizeof(sockopt_val))) < 0) {
747 perror("setsockopt");
748 ret = -1;
749 }
750 # else
751 ret = -1;
752 # endif
753 break;
754 # if OPENSSL_USE_IPV6
755 case AF_INET6:
756 # if defined(IPV6_DONTFRAG)
757 if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG,
758 (const void *)&sockopt_val,
759 sizeof(sockopt_val))) < 0) {
760 perror("setsockopt");
761 ret = -1;
762 }
763 # elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
764 if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
765 (ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
766 &sockopt_val, sizeof(sockopt_val))) < 0) {
767 perror("setsockopt");
768 ret = -1;
769 }
770 # else
771 ret = -1;
772 # endif
773 break;
774 # endif
775 default:
776 ret = -1;
777 break;
778 }
779 break;
780 case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
781 ret = dgram_get_mtu_overhead(data);
782 break;
783
784 /*
785 * BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE is used here for compatibility
786 * reasons. When BIO_CTRL_DGRAM_SET_PEEK_MODE was first defined its value
787 * was incorrectly clashing with BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE. The
788 * value has been updated to a non-clashing value. However to preserve
789 * binary compatibility we now respond to both the old value and the new one
790 */
791 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
792 case BIO_CTRL_DGRAM_SET_PEEK_MODE:
793 data->peekmode = (unsigned int)num;
794 break;
795 default:
796 ret = 0;
797 break;
798 }
799 return ret;
800 }
801
802 static int dgram_puts(BIO *bp, const char *str)
803 {
804 int n, ret;
805
806 n = strlen(str);
807 ret = dgram_write(bp, str, n);
808 return ret;
809 }
810
811 # ifndef OPENSSL_NO_SCTP
812 const BIO_METHOD *BIO_s_datagram_sctp(void)
813 {
814 return &methods_dgramp_sctp;
815 }
816
817 BIO *BIO_new_dgram_sctp(int fd, int close_flag)
818 {
819 BIO *bio;
820 int ret, optval = 20000;
821 int auth_data = 0, auth_forward = 0;
822 unsigned char *p;
823 struct sctp_authchunk auth;
824 struct sctp_authchunks *authchunks;
825 socklen_t sockopt_len;
826 # ifdef SCTP_AUTHENTICATION_EVENT
827 # ifdef SCTP_EVENT
828 struct sctp_event event;
829 # else
830 struct sctp_event_subscribe event;
831 # endif
832 # endif
833
834 bio = BIO_new(BIO_s_datagram_sctp());
835 if (bio == NULL)
836 return NULL;
837 BIO_set_fd(bio, fd, close_flag);
838
839 /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
840 auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE;
841 ret =
842 setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth,
843 sizeof(struct sctp_authchunk));
844 if (ret < 0) {
845 BIO_vfree(bio);
846 BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB);
847 ERR_add_error_data(1, "Ensure SCTP AUTH chunks are enabled in kernel");
848 return NULL;
849 }
850 auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE;
851 ret =
852 setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth,
853 sizeof(struct sctp_authchunk));
854 if (ret < 0) {
855 BIO_vfree(bio);
856 BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB);
857 ERR_add_error_data(1, "Ensure SCTP AUTH chunks are enabled in kernel");
858 return NULL;
859 }
860
861 /*
862 * Test if activation was successful. When using accept(), SCTP-AUTH has
863 * to be activated for the listening socket already, otherwise the
864 * connected socket won't use it. Similarly with connect(): the socket
865 * prior to connection must be activated for SCTP-AUTH
866 */
867 sockopt_len = (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
868 authchunks = OPENSSL_zalloc(sockopt_len);
869 if (authchunks == NULL) {
870 BIO_vfree(bio);
871 return NULL;
872 }
873 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks,
874 &sockopt_len);
875 if (ret < 0) {
876 OPENSSL_free(authchunks);
877 BIO_vfree(bio);
878 return NULL;
879 }
880
881 for (p = (unsigned char *)authchunks->gauth_chunks;
882 p < (unsigned char *)authchunks + sockopt_len;
883 p += sizeof(uint8_t)) {
884 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE)
885 auth_data = 1;
886 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE)
887 auth_forward = 1;
888 }
889
890 OPENSSL_free(authchunks);
891
892 if (!auth_data || !auth_forward) {
893 BIO_vfree(bio);
894 BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB);
895 ERR_add_error_data(1,
896 "Ensure SCTP AUTH chunks are enabled on the "
897 "underlying socket");
898 return NULL;
899 }
900
901 # ifdef SCTP_AUTHENTICATION_EVENT
902 # ifdef SCTP_EVENT
903 memset(&event, 0, sizeof(event));
904 event.se_assoc_id = 0;
905 event.se_type = SCTP_AUTHENTICATION_EVENT;
906 event.se_on = 1;
907 ret =
908 setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event,
909 sizeof(struct sctp_event));
910 if (ret < 0) {
911 BIO_vfree(bio);
912 return NULL;
913 }
914 # else
915 sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe);
916 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len);
917 if (ret < 0) {
918 BIO_vfree(bio);
919 return NULL;
920 }
921
922 event.sctp_authentication_event = 1;
923
924 ret =
925 setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event,
926 sizeof(struct sctp_event_subscribe));
927 if (ret < 0) {
928 BIO_vfree(bio);
929 return NULL;
930 }
931 # endif
932 # endif
933
934 /*
935 * Disable partial delivery by setting the min size larger than the max
936 * record size of 2^14 + 2048 + 13
937 */
938 ret =
939 setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval,
940 sizeof(optval));
941 if (ret < 0) {
942 BIO_vfree(bio);
943 return NULL;
944 }
945
946 return bio;
947 }
948
949 int BIO_dgram_is_sctp(BIO *bio)
950 {
951 return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP);
952 }
953
954 static int dgram_sctp_new(BIO *bi)
955 {
956 bio_dgram_sctp_data *data = NULL;
957
958 bi->init = 0;
959 bi->num = 0;
960 if ((data = OPENSSL_zalloc(sizeof(*data))) == NULL) {
961 BIOerr(BIO_F_DGRAM_SCTP_NEW, ERR_R_MALLOC_FAILURE);
962 return 0;
963 }
964 # ifdef SCTP_PR_SCTP_NONE
965 data->prinfo.pr_policy = SCTP_PR_SCTP_NONE;
966 # endif
967 bi->ptr = data;
968
969 bi->flags = 0;
970 return 1;
971 }
972
973 static int dgram_sctp_free(BIO *a)
974 {
975 bio_dgram_sctp_data *data;
976
977 if (a == NULL)
978 return 0;
979 if (!dgram_clear(a))
980 return 0;
981
982 data = (bio_dgram_sctp_data *) a->ptr;
983 if (data != NULL)
984 OPENSSL_free(data);
985
986 return 1;
987 }
988
989 # ifdef SCTP_AUTHENTICATION_EVENT
990 void dgram_sctp_handle_auth_free_key_event(BIO *b,
991 union sctp_notification *snp)
992 {
993 int ret;
994 struct sctp_authkey_event *authkeyevent = &snp->sn_auth_event;
995
996 if (authkeyevent->auth_indication == SCTP_AUTH_FREE_KEY) {
997 struct sctp_authkeyid authkeyid;
998
999 /* delete key */
1000 authkeyid.scact_keynumber = authkeyevent->auth_keynumber;
1001 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
1002 &authkeyid, sizeof(struct sctp_authkeyid));
1003 }
1004 }
1005 # endif
1006
1007 static int dgram_sctp_read(BIO *b, char *out, int outl)
1008 {
1009 int ret = 0, n = 0, i, optval;
1010 socklen_t optlen;
1011 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1012 struct msghdr msg;
1013 struct iovec iov;
1014 struct cmsghdr *cmsg;
1015 char cmsgbuf[512];
1016
1017 if (out != NULL) {
1018 clear_socket_error();
1019
1020 do {
1021 memset(&data->rcvinfo, 0, sizeof(data->rcvinfo));
1022 iov.iov_base = out;
1023 iov.iov_len = outl;
1024 msg.msg_name = NULL;
1025 msg.msg_namelen = 0;
1026 msg.msg_iov = &iov;
1027 msg.msg_iovlen = 1;
1028 msg.msg_control = cmsgbuf;
1029 msg.msg_controllen = 512;
1030 msg.msg_flags = 0;
1031 n = recvmsg(b->num, &msg, 0);
1032
1033 if (n <= 0) {
1034 if (n < 0)
1035 ret = n;
1036 break;
1037 }
1038
1039 if (msg.msg_controllen > 0) {
1040 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg;
1041 cmsg = CMSG_NXTHDR(&msg, cmsg)) {
1042 if (cmsg->cmsg_level != IPPROTO_SCTP)
1043 continue;
1044 # ifdef SCTP_RCVINFO
1045 if (cmsg->cmsg_type == SCTP_RCVINFO) {
1046 struct sctp_rcvinfo *rcvinfo;
1047
1048 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
1049 data->rcvinfo.rcv_sid = rcvinfo->rcv_sid;
1050 data->rcvinfo.rcv_ssn = rcvinfo->rcv_ssn;
1051 data->rcvinfo.rcv_flags = rcvinfo->rcv_flags;
1052 data->rcvinfo.rcv_ppid = rcvinfo->rcv_ppid;
1053 data->rcvinfo.rcv_tsn = rcvinfo->rcv_tsn;
1054 data->rcvinfo.rcv_cumtsn = rcvinfo->rcv_cumtsn;
1055 data->rcvinfo.rcv_context = rcvinfo->rcv_context;
1056 }
1057 # endif
1058 # ifdef SCTP_SNDRCV
1059 if (cmsg->cmsg_type == SCTP_SNDRCV) {
1060 struct sctp_sndrcvinfo *sndrcvinfo;
1061
1062 sndrcvinfo =
1063 (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
1064 data->rcvinfo.rcv_sid = sndrcvinfo->sinfo_stream;
1065 data->rcvinfo.rcv_ssn = sndrcvinfo->sinfo_ssn;
1066 data->rcvinfo.rcv_flags = sndrcvinfo->sinfo_flags;
1067 data->rcvinfo.rcv_ppid = sndrcvinfo->sinfo_ppid;
1068 data->rcvinfo.rcv_tsn = sndrcvinfo->sinfo_tsn;
1069 data->rcvinfo.rcv_cumtsn = sndrcvinfo->sinfo_cumtsn;
1070 data->rcvinfo.rcv_context = sndrcvinfo->sinfo_context;
1071 }
1072 # endif
1073 }
1074 }
1075
1076 if (msg.msg_flags & MSG_NOTIFICATION) {
1077 union sctp_notification snp;
1078
1079 memcpy(&snp, out, sizeof(snp));
1080 if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) {
1081 # ifdef SCTP_EVENT
1082 struct sctp_event event;
1083 # else
1084 struct sctp_event_subscribe event;
1085 socklen_t eventsize;
1086 # endif
1087
1088 /* disable sender dry event */
1089 # ifdef SCTP_EVENT
1090 memset(&event, 0, sizeof(event));
1091 event.se_assoc_id = 0;
1092 event.se_type = SCTP_SENDER_DRY_EVENT;
1093 event.se_on = 0;
1094 i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
1095 sizeof(struct sctp_event));
1096 if (i < 0) {
1097 ret = i;
1098 break;
1099 }
1100 # else
1101 eventsize = sizeof(struct sctp_event_subscribe);
1102 i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
1103 &eventsize);
1104 if (i < 0) {
1105 ret = i;
1106 break;
1107 }
1108
1109 event.sctp_sender_dry_event = 0;
1110
1111 i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
1112 sizeof(struct sctp_event_subscribe));
1113 if (i < 0) {
1114 ret = i;
1115 break;
1116 }
1117 # endif
1118 }
1119 # ifdef SCTP_AUTHENTICATION_EVENT
1120 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1121 dgram_sctp_handle_auth_free_key_event(b, &snp);
1122 # endif
1123
1124 if (data->handle_notifications != NULL)
1125 data->handle_notifications(b, data->notification_context,
1126 (void *)out);
1127
1128 memset(&snp, 0, sizeof(snp));
1129 memset(out, 0, outl);
1130 } else {
1131 ret += n;
1132 }
1133 }
1134 while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR)
1135 && (ret < outl));
1136
1137 if (ret > 0 && !(msg.msg_flags & MSG_EOR)) {
1138 /* Partial message read, this should never happen! */
1139
1140 /*
1141 * The buffer was too small, this means the peer sent a message
1142 * that was larger than allowed.
1143 */
1144 if (ret == outl)
1145 return -1;
1146
1147 /*
1148 * Test if socket buffer can handle max record size (2^14 + 2048
1149 * + 13)
1150 */
1151 optlen = (socklen_t) sizeof(int);
1152 ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen);
1153 if (ret >= 0)
1154 OPENSSL_assert(optval >= 18445);
1155
1156 /*
1157 * Test if SCTP doesn't partially deliver below max record size
1158 * (2^14 + 2048 + 13)
1159 */
1160 optlen = (socklen_t) sizeof(int);
1161 ret =
1162 getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
1163 &optval, &optlen);
1164 if (ret >= 0)
1165 OPENSSL_assert(optval >= 18445);
1166
1167 /*
1168 * Partially delivered notification??? Probably a bug....
1169 */
1170 OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION));
1171
1172 /*
1173 * Everything seems ok till now, so it's most likely a message
1174 * dropped by PR-SCTP.
1175 */
1176 memset(out, 0, outl);
1177 BIO_set_retry_read(b);
1178 return -1;
1179 }
1180
1181 BIO_clear_retry_flags(b);
1182 if (ret < 0) {
1183 if (BIO_dgram_should_retry(ret)) {
1184 BIO_set_retry_read(b);
1185 data->_errno = get_last_socket_error();
1186 }
1187 }
1188
1189 /* Test if peer uses SCTP-AUTH before continuing */
1190 if (!data->peer_auth_tested) {
1191 int ii, auth_data = 0, auth_forward = 0;
1192 unsigned char *p;
1193 struct sctp_authchunks *authchunks;
1194
1195 optlen =
1196 (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
1197 authchunks = OPENSSL_malloc(optlen);
1198 if (authchunks == NULL) {
1199 BIOerr(BIO_F_DGRAM_SCTP_READ, ERR_R_MALLOC_FAILURE);
1200 return -1;
1201 }
1202 memset(authchunks, 0, optlen);
1203 ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS,
1204 authchunks, &optlen);
1205
1206 if (ii >= 0)
1207 for (p = (unsigned char *)authchunks->gauth_chunks;
1208 p < (unsigned char *)authchunks + optlen;
1209 p += sizeof(uint8_t)) {
1210 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE)
1211 auth_data = 1;
1212 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE)
1213 auth_forward = 1;
1214 }
1215
1216 OPENSSL_free(authchunks);
1217
1218 if (!auth_data || !auth_forward) {
1219 BIOerr(BIO_F_DGRAM_SCTP_READ, BIO_R_CONNECT_ERROR);
1220 return -1;
1221 }
1222
1223 data->peer_auth_tested = 1;
1224 }
1225 }
1226 return ret;
1227 }
1228
1229 /*
1230 * dgram_sctp_write - send message on SCTP socket
1231 * @b: BIO to write to
1232 * @in: data to send
1233 * @inl: amount of bytes in @in to send
1234 *
1235 * Returns -1 on error or the sent amount of bytes on success
1236 */
1237 static int dgram_sctp_write(BIO *b, const char *in, int inl)
1238 {
1239 int ret;
1240 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1241 struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo);
1242 struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo);
1243 struct bio_dgram_sctp_sndinfo handshake_sinfo;
1244 struct iovec iov[1];
1245 struct msghdr msg;
1246 struct cmsghdr *cmsg;
1247 # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1248 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
1249 CMSG_SPACE(sizeof(struct sctp_prinfo))];
1250 struct sctp_sndinfo *sndinfo;
1251 struct sctp_prinfo *prinfo;
1252 # else
1253 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
1254 struct sctp_sndrcvinfo *sndrcvinfo;
1255 # endif
1256
1257 clear_socket_error();
1258
1259 /*
1260 * If we're send anything else than application data, disable all user
1261 * parameters and flags.
1262 */
1263 if (in[0] != 23) {
1264 memset(&handshake_sinfo, 0, sizeof(handshake_sinfo));
1265 # ifdef SCTP_SACK_IMMEDIATELY
1266 handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY;
1267 # endif
1268 sinfo = &handshake_sinfo;
1269 }
1270
1271 /* We can only send a shutdown alert if the socket is dry */
1272 if (data->save_shutdown) {
1273 ret = BIO_dgram_sctp_wait_for_dry(b);
1274 if (ret < 0)
1275 return -1;
1276 if (ret == 0) {
1277 BIO_clear_retry_flags(b);
1278 BIO_set_retry_write(b);
1279 return -1;
1280 }
1281 }
1282
1283 iov[0].iov_base = (char *)in;
1284 iov[0].iov_len = inl;
1285 msg.msg_name = NULL;
1286 msg.msg_namelen = 0;
1287 msg.msg_iov = iov;
1288 msg.msg_iovlen = 1;
1289 msg.msg_control = (caddr_t) cmsgbuf;
1290 msg.msg_controllen = 0;
1291 msg.msg_flags = 0;
1292 # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1293 cmsg = (struct cmsghdr *)cmsgbuf;
1294 cmsg->cmsg_level = IPPROTO_SCTP;
1295 cmsg->cmsg_type = SCTP_SNDINFO;
1296 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1297 sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg);
1298 memset(sndinfo, 0, sizeof(*sndinfo));
1299 sndinfo->snd_sid = sinfo->snd_sid;
1300 sndinfo->snd_flags = sinfo->snd_flags;
1301 sndinfo->snd_ppid = sinfo->snd_ppid;
1302 sndinfo->snd_context = sinfo->snd_context;
1303 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1304
1305 cmsg =
1306 (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))];
1307 cmsg->cmsg_level = IPPROTO_SCTP;
1308 cmsg->cmsg_type = SCTP_PRINFO;
1309 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1310 prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg);
1311 memset(prinfo, 0, sizeof(*prinfo));
1312 prinfo->pr_policy = pinfo->pr_policy;
1313 prinfo->pr_value = pinfo->pr_value;
1314 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1315 # else
1316 cmsg = (struct cmsghdr *)cmsgbuf;
1317 cmsg->cmsg_level = IPPROTO_SCTP;
1318 cmsg->cmsg_type = SCTP_SNDRCV;
1319 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
1320 sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
1321 memset(sndrcvinfo, 0, sizeof(*sndrcvinfo));
1322 sndrcvinfo->sinfo_stream = sinfo->snd_sid;
1323 sndrcvinfo->sinfo_flags = sinfo->snd_flags;
1324 # ifdef __FreeBSD__
1325 sndrcvinfo->sinfo_flags |= pinfo->pr_policy;
1326 # endif
1327 sndrcvinfo->sinfo_ppid = sinfo->snd_ppid;
1328 sndrcvinfo->sinfo_context = sinfo->snd_context;
1329 sndrcvinfo->sinfo_timetolive = pinfo->pr_value;
1330 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
1331 # endif
1332
1333 ret = sendmsg(b->num, &msg, 0);
1334
1335 BIO_clear_retry_flags(b);
1336 if (ret <= 0) {
1337 if (BIO_dgram_should_retry(ret)) {
1338 BIO_set_retry_write(b);
1339 data->_errno = get_last_socket_error();
1340 }
1341 }
1342 return ret;
1343 }
1344
1345 static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr)
1346 {
1347 long ret = 1;
1348 bio_dgram_sctp_data *data = NULL;
1349 socklen_t sockopt_len = 0;
1350 struct sctp_authkeyid authkeyid;
1351 struct sctp_authkey *authkey = NULL;
1352
1353 data = (bio_dgram_sctp_data *) b->ptr;
1354
1355 switch (cmd) {
1356 case BIO_CTRL_DGRAM_QUERY_MTU:
1357 /*
1358 * Set to maximum (2^14) and ignore user input to enable transport
1359 * protocol fragmentation. Returns always 2^14.
1360 */
1361 data->mtu = 16384;
1362 ret = data->mtu;
1363 break;
1364 case BIO_CTRL_DGRAM_SET_MTU:
1365 /*
1366 * Set to maximum (2^14) and ignore input to enable transport
1367 * protocol fragmentation. Returns always 2^14.
1368 */
1369 data->mtu = 16384;
1370 ret = data->mtu;
1371 break;
1372 case BIO_CTRL_DGRAM_SET_CONNECTED:
1373 case BIO_CTRL_DGRAM_CONNECT:
1374 /* Returns always -1. */
1375 ret = -1;
1376 break;
1377 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
1378 /*
1379 * SCTP doesn't need the DTLS timer Returns always 1.
1380 */
1381 break;
1382 case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
1383 /*
1384 * We allow transport protocol fragmentation so this is irrelevant
1385 */
1386 ret = 0;
1387 break;
1388 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
1389 if (num > 0)
1390 data->in_handshake = 1;
1391 else
1392 data->in_handshake = 0;
1393
1394 ret =
1395 setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY,
1396 &data->in_handshake, sizeof(int));
1397 break;
1398 case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY:
1399 /*
1400 * New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise.
1401 */
1402
1403 /* Get active key */
1404 sockopt_len = sizeof(struct sctp_authkeyid);
1405 ret =
1406 getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid,
1407 &sockopt_len);
1408 if (ret < 0)
1409 break;
1410
1411 /* Add new key */
1412 sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t);
1413 authkey = OPENSSL_malloc(sockopt_len);
1414 if (authkey == NULL) {
1415 ret = -1;
1416 break;
1417 }
1418 memset(authkey, 0, sockopt_len);
1419 authkey->sca_keynumber = authkeyid.scact_keynumber + 1;
1420 # ifndef __FreeBSD__
1421 /*
1422 * This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3
1423 * and higher work without it.
1424 */
1425 authkey->sca_keylength = 64;
1426 # endif
1427 memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t));
1428
1429 ret =
1430 setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey,
1431 sockopt_len);
1432 OPENSSL_free(authkey);
1433 authkey = NULL;
1434 if (ret < 0)
1435 break;
1436
1437 /* Reset active key */
1438 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1439 &authkeyid, sizeof(struct sctp_authkeyid));
1440 if (ret < 0)
1441 break;
1442
1443 break;
1444 case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY:
1445 /* Returns 0 on success, -1 otherwise. */
1446
1447 /* Get active key */
1448 sockopt_len = sizeof(struct sctp_authkeyid);
1449 ret =
1450 getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid,
1451 &sockopt_len);
1452 if (ret < 0)
1453 break;
1454
1455 /* Set active key */
1456 authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1;
1457 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1458 &authkeyid, sizeof(struct sctp_authkeyid));
1459 if (ret < 0)
1460 break;
1461
1462 /*
1463 * CCS has been sent, so remember that and fall through to check if
1464 * we need to deactivate an old key
1465 */
1466 data->ccs_sent = 1;
1467 /* fall-through */
1468
1469 case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD:
1470 /* Returns 0 on success, -1 otherwise. */
1471
1472 /*
1473 * Has this command really been called or is this just a
1474 * fall-through?
1475 */
1476 if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD)
1477 data->ccs_rcvd = 1;
1478
1479 /*
1480 * CSS has been both, received and sent, so deactivate an old key
1481 */
1482 if (data->ccs_rcvd == 1 && data->ccs_sent == 1) {
1483 /* Get active key */
1484 sockopt_len = sizeof(struct sctp_authkeyid);
1485 ret =
1486 getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1487 &authkeyid, &sockopt_len);
1488 if (ret < 0)
1489 break;
1490
1491 /*
1492 * Deactivate key or delete second last key if
1493 * SCTP_AUTHENTICATION_EVENT is not available.
1494 */
1495 authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
1496 # ifdef SCTP_AUTH_DEACTIVATE_KEY
1497 sockopt_len = sizeof(struct sctp_authkeyid);
1498 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY,
1499 &authkeyid, sockopt_len);
1500 if (ret < 0)
1501 break;
1502 # endif
1503 # ifndef SCTP_AUTHENTICATION_EVENT
1504 if (authkeyid.scact_keynumber > 0) {
1505 authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
1506 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
1507 &authkeyid, sizeof(struct sctp_authkeyid));
1508 if (ret < 0)
1509 break;
1510 }
1511 # endif
1512
1513 data->ccs_rcvd = 0;
1514 data->ccs_sent = 0;
1515 }
1516 break;
1517 case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO:
1518 /* Returns the size of the copied struct. */
1519 if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo))
1520 num = sizeof(struct bio_dgram_sctp_sndinfo);
1521
1522 memcpy(ptr, &(data->sndinfo), num);
1523 ret = num;
1524 break;
1525 case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO:
1526 /* Returns the size of the copied struct. */
1527 if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo))
1528 num = sizeof(struct bio_dgram_sctp_sndinfo);
1529
1530 memcpy(&(data->sndinfo), ptr, num);
1531 break;
1532 case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO:
1533 /* Returns the size of the copied struct. */
1534 if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo))
1535 num = sizeof(struct bio_dgram_sctp_rcvinfo);
1536
1537 memcpy(ptr, &data->rcvinfo, num);
1538
1539 ret = num;
1540 break;
1541 case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO:
1542 /* Returns the size of the copied struct. */
1543 if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo))
1544 num = sizeof(struct bio_dgram_sctp_rcvinfo);
1545
1546 memcpy(&(data->rcvinfo), ptr, num);
1547 break;
1548 case BIO_CTRL_DGRAM_SCTP_GET_PRINFO:
1549 /* Returns the size of the copied struct. */
1550 if (num > (long)sizeof(struct bio_dgram_sctp_prinfo))
1551 num = sizeof(struct bio_dgram_sctp_prinfo);
1552
1553 memcpy(ptr, &(data->prinfo), num);
1554 ret = num;
1555 break;
1556 case BIO_CTRL_DGRAM_SCTP_SET_PRINFO:
1557 /* Returns the size of the copied struct. */
1558 if (num > (long)sizeof(struct bio_dgram_sctp_prinfo))
1559 num = sizeof(struct bio_dgram_sctp_prinfo);
1560
1561 memcpy(&(data->prinfo), ptr, num);
1562 break;
1563 case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN:
1564 /* Returns always 1. */
1565 if (num > 0)
1566 data->save_shutdown = 1;
1567 else
1568 data->save_shutdown = 0;
1569 break;
1570 case BIO_CTRL_DGRAM_SCTP_WAIT_FOR_DRY:
1571 return dgram_sctp_wait_for_dry(b);
1572 case BIO_CTRL_DGRAM_SCTP_MSG_WAITING:
1573 return dgram_sctp_msg_waiting(b);
1574
1575 default:
1576 /*
1577 * Pass to default ctrl function to process SCTP unspecific commands
1578 */
1579 ret = dgram_ctrl(b, cmd, num, ptr);
1580 break;
1581 }
1582 return ret;
1583 }
1584
1585 int BIO_dgram_sctp_notification_cb(BIO *b,
1586 BIO_dgram_sctp_notification_handler_fn handle_notifications,
1587 void *context)
1588 {
1589 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1590
1591 if (handle_notifications != NULL) {
1592 data->handle_notifications = handle_notifications;
1593 data->notification_context = context;
1594 } else
1595 return -1;
1596
1597 return 0;
1598 }
1599
1600 /*
1601 * BIO_dgram_sctp_wait_for_dry - Wait for SCTP SENDER_DRY event
1602 * @b: The BIO to check for the dry event
1603 *
1604 * Wait until the peer confirms all packets have been received, and so that
1605 * our kernel doesn't have anything to send anymore. This is only received by
1606 * the peer's kernel, not the application.
1607 *
1608 * Returns:
1609 * -1 on error
1610 * 0 when not dry yet
1611 * 1 when dry
1612 */
1613 int BIO_dgram_sctp_wait_for_dry(BIO *b)
1614 {
1615 return (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SCTP_WAIT_FOR_DRY, 0, NULL);
1616 }
1617
1618 static int dgram_sctp_wait_for_dry(BIO *b)
1619 {
1620 int is_dry = 0;
1621 int sockflags = 0;
1622 int n, ret;
1623 union sctp_notification snp;
1624 struct msghdr msg;
1625 struct iovec iov;
1626 # ifdef SCTP_EVENT
1627 struct sctp_event event;
1628 # else
1629 struct sctp_event_subscribe event;
1630 socklen_t eventsize;
1631 # endif
1632 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1633
1634 /* set sender dry event */
1635 # ifdef SCTP_EVENT
1636 memset(&event, 0, sizeof(event));
1637 event.se_assoc_id = 0;
1638 event.se_type = SCTP_SENDER_DRY_EVENT;
1639 event.se_on = 1;
1640 ret =
1641 setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
1642 sizeof(struct sctp_event));
1643 # else
1644 eventsize = sizeof(struct sctp_event_subscribe);
1645 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1646 if (ret < 0)
1647 return -1;
1648
1649 event.sctp_sender_dry_event = 1;
1650
1651 ret =
1652 setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
1653 sizeof(struct sctp_event_subscribe));
1654 # endif
1655 if (ret < 0)
1656 return -1;
1657
1658 /* peek for notification */
1659 memset(&snp, 0, sizeof(snp));
1660 iov.iov_base = (char *)&snp;
1661 iov.iov_len = sizeof(union sctp_notification);
1662 msg.msg_name = NULL;
1663 msg.msg_namelen = 0;
1664 msg.msg_iov = &iov;
1665 msg.msg_iovlen = 1;
1666 msg.msg_control = NULL;
1667 msg.msg_controllen = 0;
1668 msg.msg_flags = 0;
1669
1670 n = recvmsg(b->num, &msg, MSG_PEEK);
1671 if (n <= 0) {
1672 if ((n < 0) && (get_last_socket_error() != EAGAIN)
1673 && (get_last_socket_error() != EWOULDBLOCK))
1674 return -1;
1675 else
1676 return 0;
1677 }
1678
1679 /* if we find a notification, process it and try again if necessary */
1680 while (msg.msg_flags & MSG_NOTIFICATION) {
1681 memset(&snp, 0, sizeof(snp));
1682 iov.iov_base = (char *)&snp;
1683 iov.iov_len = sizeof(union sctp_notification);
1684 msg.msg_name = NULL;
1685 msg.msg_namelen = 0;
1686 msg.msg_iov = &iov;
1687 msg.msg_iovlen = 1;
1688 msg.msg_control = NULL;
1689 msg.msg_controllen = 0;
1690 msg.msg_flags = 0;
1691
1692 n = recvmsg(b->num, &msg, 0);
1693 if (n <= 0) {
1694 if ((n < 0) && (get_last_socket_error() != EAGAIN)
1695 && (get_last_socket_error() != EWOULDBLOCK))
1696 return -1;
1697 else
1698 return is_dry;
1699 }
1700
1701 if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) {
1702 is_dry = 1;
1703
1704 /* disable sender dry event */
1705 # ifdef SCTP_EVENT
1706 memset(&event, 0, sizeof(event));
1707 event.se_assoc_id = 0;
1708 event.se_type = SCTP_SENDER_DRY_EVENT;
1709 event.se_on = 0;
1710 ret =
1711 setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event,
1712 sizeof(struct sctp_event));
1713 # else
1714 eventsize = (socklen_t) sizeof(struct sctp_event_subscribe);
1715 ret =
1716 getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
1717 &eventsize);
1718 if (ret < 0)
1719 return -1;
1720
1721 event.sctp_sender_dry_event = 0;
1722
1723 ret =
1724 setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event,
1725 sizeof(struct sctp_event_subscribe));
1726 # endif
1727 if (ret < 0)
1728 return -1;
1729 }
1730 # ifdef SCTP_AUTHENTICATION_EVENT
1731 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1732 dgram_sctp_handle_auth_free_key_event(b, &snp);
1733 # endif
1734
1735 if (data->handle_notifications != NULL)
1736 data->handle_notifications(b, data->notification_context,
1737 (void *)&snp);
1738
1739 /* found notification, peek again */
1740 memset(&snp, 0, sizeof(snp));
1741 iov.iov_base = (char *)&snp;
1742 iov.iov_len = sizeof(union sctp_notification);
1743 msg.msg_name = NULL;
1744 msg.msg_namelen = 0;
1745 msg.msg_iov = &iov;
1746 msg.msg_iovlen = 1;
1747 msg.msg_control = NULL;
1748 msg.msg_controllen = 0;
1749 msg.msg_flags = 0;
1750
1751 /* if we have seen the dry already, don't wait */
1752 if (is_dry) {
1753 sockflags = fcntl(b->num, F_GETFL, 0);
1754 fcntl(b->num, F_SETFL, O_NONBLOCK);
1755 }
1756
1757 n = recvmsg(b->num, &msg, MSG_PEEK);
1758
1759 if (is_dry) {
1760 fcntl(b->num, F_SETFL, sockflags);
1761 }
1762
1763 if (n <= 0) {
1764 if ((n < 0) && (get_last_socket_error() != EAGAIN)
1765 && (get_last_socket_error() != EWOULDBLOCK))
1766 return -1;
1767 else
1768 return is_dry;
1769 }
1770 }
1771
1772 /* read anything else */
1773 return is_dry;
1774 }
1775
1776 int BIO_dgram_sctp_msg_waiting(BIO *b)
1777 {
1778 return (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SCTP_MSG_WAITING, 0, NULL);
1779 }
1780
1781 static int dgram_sctp_msg_waiting(BIO *b)
1782 {
1783 int n, sockflags;
1784 union sctp_notification snp;
1785 struct msghdr msg;
1786 struct iovec iov;
1787 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1788
1789 /* Check if there are any messages waiting to be read */
1790 do {
1791 memset(&snp, 0, sizeof(snp));
1792 iov.iov_base = (char *)&snp;
1793 iov.iov_len = sizeof(union sctp_notification);
1794 msg.msg_name = NULL;
1795 msg.msg_namelen = 0;
1796 msg.msg_iov = &iov;
1797 msg.msg_iovlen = 1;
1798 msg.msg_control = NULL;
1799 msg.msg_controllen = 0;
1800 msg.msg_flags = 0;
1801
1802 sockflags = fcntl(b->num, F_GETFL, 0);
1803 fcntl(b->num, F_SETFL, O_NONBLOCK);
1804 n = recvmsg(b->num, &msg, MSG_PEEK);
1805 fcntl(b->num, F_SETFL, sockflags);
1806
1807 /* if notification, process and try again */
1808 if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)) {
1809 # ifdef SCTP_AUTHENTICATION_EVENT
1810 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1811 dgram_sctp_handle_auth_free_key_event(b, &snp);
1812 # endif
1813
1814 memset(&snp, 0, sizeof(snp));
1815 iov.iov_base = (char *)&snp;
1816 iov.iov_len = sizeof(union sctp_notification);
1817 msg.msg_name = NULL;
1818 msg.msg_namelen = 0;
1819 msg.msg_iov = &iov;
1820 msg.msg_iovlen = 1;
1821 msg.msg_control = NULL;
1822 msg.msg_controllen = 0;
1823 msg.msg_flags = 0;
1824 n = recvmsg(b->num, &msg, 0);
1825
1826 if (data->handle_notifications != NULL)
1827 data->handle_notifications(b, data->notification_context,
1828 (void *)&snp);
1829 }
1830
1831 } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION));
1832
1833 /* Return 1 if there is a message to be read, return 0 otherwise. */
1834 if (n > 0)
1835 return 1;
1836 else
1837 return 0;
1838 }
1839
1840 static int dgram_sctp_puts(BIO *bp, const char *str)
1841 {
1842 int n, ret;
1843
1844 n = strlen(str);
1845 ret = dgram_sctp_write(bp, str, n);
1846 return ret;
1847 }
1848 # endif
1849
1850 static int BIO_dgram_should_retry(int i)
1851 {
1852 int err;
1853
1854 if ((i == 0) || (i == -1)) {
1855 err = get_last_socket_error();
1856
1857 # if defined(OPENSSL_SYS_WINDOWS)
1858 /*
1859 * If the socket return value (i) is -1 and err is unexpectedly 0 at
1860 * this point, the error code was overwritten by another system call
1861 * before this error handling is called.
1862 */
1863 # endif
1864
1865 return BIO_dgram_non_fatal_error(err);
1866 }
1867 return 0;
1868 }
1869
1870 int BIO_dgram_non_fatal_error(int err)
1871 {
1872 switch (err) {
1873 # if defined(OPENSSL_SYS_WINDOWS)
1874 # if defined(WSAEWOULDBLOCK)
1875 case WSAEWOULDBLOCK:
1876 # endif
1877 # endif
1878
1879 # ifdef EWOULDBLOCK
1880 # ifdef WSAEWOULDBLOCK
1881 # if WSAEWOULDBLOCK != EWOULDBLOCK
1882 case EWOULDBLOCK:
1883 # endif
1884 # else
1885 case EWOULDBLOCK:
1886 # endif
1887 # endif
1888
1889 # ifdef EINTR
1890 case EINTR:
1891 # endif
1892
1893 # ifdef EAGAIN
1894 # if EWOULDBLOCK != EAGAIN
1895 case EAGAIN:
1896 # endif
1897 # endif
1898
1899 # ifdef EPROTO
1900 case EPROTO:
1901 # endif
1902
1903 # ifdef EINPROGRESS
1904 case EINPROGRESS:
1905 # endif
1906
1907 # ifdef EALREADY
1908 case EALREADY:
1909 # endif
1910
1911 return 1;
1912 default:
1913 break;
1914 }
1915 return 0;
1916 }
1917
1918 static void get_current_time(struct timeval *t)
1919 {
1920 # if defined(_WIN32)
1921 SYSTEMTIME st;
1922 union {
1923 unsigned __int64 ul;
1924 FILETIME ft;
1925 } now;
1926
1927 GetSystemTime(&st);
1928 SystemTimeToFileTime(&st, &now.ft);
1929 # ifdef __MINGW32__
1930 now.ul -= 116444736000000000ULL;
1931 # else
1932 now.ul -= 116444736000000000UI64; /* re-bias to 1/1/1970 */
1933 # endif
1934 t->tv_sec = (long)(now.ul / 10000000);
1935 t->tv_usec = ((int)(now.ul % 10000000)) / 10;
1936 # else
1937 gettimeofday(t, NULL);
1938 # endif
1939 }
1940
1941 #endif
A mirror of the official openssl repository