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authorcvs2svn <admin@example.com>2014-04-13 15:49:51 +0000
committercvs2svn <admin@example.com>2014-04-13 15:49:51 +0000
commit9ef0d5fb5b0acfd35d73a5557198f46525ab1667 (patch)
tree61e7e25839f716a30db270f15cddf0be6903781f /src/lib/libcrypto/bio/bss_dgram.c
parentff237038a541d51619efa5b36fb251c8dc1e9637 (diff)
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This commit was manufactured by cvs2git to create tag 'butholakala'.butholakala
Diffstat (limited to 'src/lib/libcrypto/bio/bss_dgram.c')
-rw-r--r--src/lib/libcrypto/bio/bss_dgram.c1865
1 files changed, 0 insertions, 1865 deletions
diff --git a/src/lib/libcrypto/bio/bss_dgram.c b/src/lib/libcrypto/bio/bss_dgram.c
deleted file mode 100644
index 54c012c47d..0000000000
--- a/src/lib/libcrypto/bio/bss_dgram.c
+++ /dev/null
@@ -1,1865 +0,0 @@
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_WIN32) || 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 defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
85/* Standard definition causes type-punning problems. */
86#undef IN6_IS_ADDR_V4MAPPED
87#define s6_addr32 __u6_addr.__u6_addr32
88#define IN6_IS_ADDR_V4MAPPED(a) \
89 (((a)->s6_addr32[0] == 0) && \
90 ((a)->s6_addr32[1] == 0) && \
91 ((a)->s6_addr32[2] == htonl(0x0000ffff)))
92#endif
93
94#ifdef WATT32
95#define sock_write SockWrite /* Watt-32 uses same names */
96#define sock_read SockRead
97#define sock_puts SockPuts
98#endif
99
100static int dgram_write(BIO *h, const char *buf, int num);
101static int dgram_read(BIO *h, char *buf, int size);
102static int dgram_puts(BIO *h, const char *str);
103static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2);
104static int dgram_new(BIO *h);
105static int dgram_free(BIO *data);
106static int dgram_clear(BIO *bio);
107
108#ifndef OPENSSL_NO_SCTP
109static int dgram_sctp_write(BIO *h, const char *buf, int num);
110static int dgram_sctp_read(BIO *h, char *buf, int size);
111static int dgram_sctp_puts(BIO *h, const char *str);
112static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2);
113static int dgram_sctp_new(BIO *h);
114static int dgram_sctp_free(BIO *data);
115#ifdef SCTP_AUTHENTICATION_EVENT
116static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification *snp);
117#endif
118#endif
119
120static int BIO_dgram_should_retry(int s);
121
122static void get_current_time(struct timeval *t);
123
124static BIO_METHOD methods_dgramp=
125 {
126 BIO_TYPE_DGRAM,
127 "datagram socket",
128 dgram_write,
129 dgram_read,
130 dgram_puts,
131 NULL, /* dgram_gets, */
132 dgram_ctrl,
133 dgram_new,
134 dgram_free,
135 NULL,
136 };
137
138#ifndef OPENSSL_NO_SCTP
139static BIO_METHOD methods_dgramp_sctp=
140 {
141 BIO_TYPE_DGRAM_SCTP,
142 "datagram sctp socket",
143 dgram_sctp_write,
144 dgram_sctp_read,
145 dgram_sctp_puts,
146 NULL, /* dgram_gets, */
147 dgram_sctp_ctrl,
148 dgram_sctp_new,
149 dgram_sctp_free,
150 NULL,
151 };
152#endif
153
154typedef struct bio_dgram_data_st
155 {
156 union {
157 struct sockaddr sa;
158 struct sockaddr_in sa_in;
159#if OPENSSL_USE_IPV6
160 struct sockaddr_in6 sa_in6;
161#endif
162 } peer;
163 unsigned int connected;
164 unsigned int _errno;
165 unsigned int mtu;
166 struct timeval next_timeout;
167 struct timeval socket_timeout;
168 } bio_dgram_data;
169
170#ifndef OPENSSL_NO_SCTP
171typedef struct bio_dgram_sctp_save_message_st
172 {
173 BIO *bio;
174 char *data;
175 int length;
176 } bio_dgram_sctp_save_message;
177
178typedef struct bio_dgram_sctp_data_st
179 {
180 union {
181 struct sockaddr sa;
182 struct sockaddr_in sa_in;
183#if OPENSSL_USE_IPV6
184 struct sockaddr_in6 sa_in6;
185#endif
186 } peer;
187 unsigned int connected;
188 unsigned int _errno;
189 unsigned int mtu;
190 struct bio_dgram_sctp_sndinfo sndinfo;
191 struct bio_dgram_sctp_rcvinfo rcvinfo;
192 struct bio_dgram_sctp_prinfo prinfo;
193 void (*handle_notifications)(BIO *bio, void *context, void *buf);
194 void* notification_context;
195 int in_handshake;
196 int ccs_rcvd;
197 int ccs_sent;
198 int save_shutdown;
199 int peer_auth_tested;
200 bio_dgram_sctp_save_message saved_message;
201 } bio_dgram_sctp_data;
202#endif
203
204BIO_METHOD *BIO_s_datagram(void)
205 {
206 return(&methods_dgramp);
207 }
208
209BIO *BIO_new_dgram(int fd, int close_flag)
210 {
211 BIO *ret;
212
213 ret=BIO_new(BIO_s_datagram());
214 if (ret == NULL) return(NULL);
215 BIO_set_fd(ret,fd,close_flag);
216 return(ret);
217 }
218
219static int dgram_new(BIO *bi)
220 {
221 bio_dgram_data *data = NULL;
222
223 bi->init=0;
224 bi->num=0;
225 data = OPENSSL_malloc(sizeof(bio_dgram_data));
226 if (data == NULL)
227 return 0;
228 memset(data, 0x00, sizeof(bio_dgram_data));
229 bi->ptr = data;
230
231 bi->flags=0;
232 return(1);
233 }
234
235static int dgram_free(BIO *a)
236 {
237 bio_dgram_data *data;
238
239 if (a == NULL) return(0);
240 if ( ! dgram_clear(a))
241 return 0;
242
243 data = (bio_dgram_data *)a->ptr;
244 if(data != NULL) OPENSSL_free(data);
245
246 return(1);
247 }
248
249static int dgram_clear(BIO *a)
250 {
251 if (a == NULL) return(0);
252 if (a->shutdown)
253 {
254 if (a->init)
255 {
256 SHUTDOWN2(a->num);
257 }
258 a->init=0;
259 a->flags=0;
260 }
261 return(1);
262 }
263
264static void dgram_adjust_rcv_timeout(BIO *b)
265 {
266#if defined(SO_RCVTIMEO)
267 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
268 union { size_t s; int i; } sz = {0};
269
270 /* Is a timer active? */
271 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
272 {
273 struct timeval timenow, timeleft;
274
275 /* Read current socket timeout */
276#ifdef OPENSSL_SYS_WINDOWS
277 int timeout;
278
279 sz.i = sizeof(timeout);
280 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
281 (void*)&timeout, &sz.i) < 0)
282 { perror("getsockopt"); }
283 else
284 {
285 data->socket_timeout.tv_sec = timeout / 1000;
286 data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
287 }
288#else
289 sz.i = sizeof(data->socket_timeout);
290 if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
291 &(data->socket_timeout), (void *)&sz) < 0)
292 { perror("getsockopt"); }
293 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
294 OPENSSL_assert(sz.s<=sizeof(data->socket_timeout));
295#endif
296
297 /* Get current time */
298 get_current_time(&timenow);
299
300 /* Calculate time left until timer expires */
301 memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
302 timeleft.tv_sec -= timenow.tv_sec;
303 timeleft.tv_usec -= timenow.tv_usec;
304 if (timeleft.tv_usec < 0)
305 {
306 timeleft.tv_sec--;
307 timeleft.tv_usec += 1000000;
308 }
309
310 if (timeleft.tv_sec < 0)
311 {
312 timeleft.tv_sec = 0;
313 timeleft.tv_usec = 1;
314 }
315
316 /* Adjust socket timeout if next handhake message timer
317 * will expire earlier.
318 */
319 if ((data->socket_timeout.tv_sec == 0 && data->socket_timeout.tv_usec == 0) ||
320 (data->socket_timeout.tv_sec > timeleft.tv_sec) ||
321 (data->socket_timeout.tv_sec == timeleft.tv_sec &&
322 data->socket_timeout.tv_usec >= timeleft.tv_usec))
323 {
324#ifdef OPENSSL_SYS_WINDOWS
325 timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
326 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
327 (void*)&timeout, sizeof(timeout)) < 0)
328 { perror("setsockopt"); }
329#else
330 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
331 sizeof(struct timeval)) < 0)
332 { perror("setsockopt"); }
333#endif
334 }
335 }
336#endif
337 }
338
339static void dgram_reset_rcv_timeout(BIO *b)
340 {
341#if defined(SO_RCVTIMEO)
342 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
343
344 /* Is a timer active? */
345 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
346 {
347#ifdef OPENSSL_SYS_WINDOWS
348 int timeout = data->socket_timeout.tv_sec * 1000 +
349 data->socket_timeout.tv_usec / 1000;
350 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
351 (void*)&timeout, sizeof(timeout)) < 0)
352 { perror("setsockopt"); }
353#else
354 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
355 sizeof(struct timeval)) < 0)
356 { perror("setsockopt"); }
357#endif
358 }
359#endif
360 }
361
362static int dgram_read(BIO *b, char *out, int outl)
363 {
364 int ret=0;
365 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
366
367 struct {
368 /*
369 * See commentary in b_sock.c. <appro>
370 */
371 union { size_t s; int i; } len;
372 union {
373 struct sockaddr sa;
374 struct sockaddr_in sa_in;
375#if OPENSSL_USE_IPV6
376 struct sockaddr_in6 sa_in6;
377#endif
378 } peer;
379 } sa;
380
381 sa.len.s=0;
382 sa.len.i=sizeof(sa.peer);
383
384 if (out != NULL)
385 {
386 clear_socket_error();
387 memset(&sa.peer, 0x00, sizeof(sa.peer));
388 dgram_adjust_rcv_timeout(b);
389 ret=recvfrom(b->num,out,outl,0,&sa.peer.sa,(void *)&sa.len);
390 if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0)
391 {
392 OPENSSL_assert(sa.len.s<=sizeof(sa.peer));
393 sa.len.i = (int)sa.len.s;
394 }
395
396 if ( ! data->connected && ret >= 0)
397 BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &sa.peer);
398
399 BIO_clear_retry_flags(b);
400 if (ret < 0)
401 {
402 if (BIO_dgram_should_retry(ret))
403 {
404 BIO_set_retry_read(b);
405 data->_errno = get_last_socket_error();
406 }
407 }
408
409 dgram_reset_rcv_timeout(b);
410 }
411 return(ret);
412 }
413
414static int dgram_write(BIO *b, const char *in, int inl)
415 {
416 int ret;
417 bio_dgram_data *data = (bio_dgram_data *)b->ptr;
418 clear_socket_error();
419
420 if ( data->connected )
421 ret=writesocket(b->num,in,inl);
422 else
423 {
424 int peerlen = sizeof(data->peer);
425
426 if (data->peer.sa.sa_family == AF_INET)
427 peerlen = sizeof(data->peer.sa_in);
428#if OPENSSL_USE_IPV6
429 else if (data->peer.sa.sa_family == AF_INET6)
430 peerlen = sizeof(data->peer.sa_in6);
431#endif
432#if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
433 ret=sendto(b->num, (char *)in, inl, 0, &data->peer.sa, peerlen);
434#else
435 ret=sendto(b->num, in, inl, 0, &data->peer.sa, peerlen);
436#endif
437 }
438
439 BIO_clear_retry_flags(b);
440 if (ret <= 0)
441 {
442 if (BIO_dgram_should_retry(ret))
443 {
444 BIO_set_retry_write(b);
445 data->_errno = get_last_socket_error();
446
447#if 0 /* higher layers are responsible for querying MTU, if necessary */
448 if ( data->_errno == EMSGSIZE)
449 /* retrieve the new MTU */
450 BIO_ctrl(b, BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
451#endif
452 }
453 }
454 return(ret);
455 }
456
457static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
458 {
459 long ret=1;
460 int *ip;
461 struct sockaddr *to = NULL;
462 bio_dgram_data *data = NULL;
463#if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
464 int sockopt_val = 0;
465 socklen_t sockopt_len; /* assume that system supporting IP_MTU is
466 * modern enough to define socklen_t */
467 socklen_t addr_len;
468 union {
469 struct sockaddr sa;
470 struct sockaddr_in s4;
471#if OPENSSL_USE_IPV6
472 struct sockaddr_in6 s6;
473#endif
474 } addr;
475#endif
476
477 data = (bio_dgram_data *)b->ptr;
478
479 switch (cmd)
480 {
481 case BIO_CTRL_RESET:
482 num=0;
483 case BIO_C_FILE_SEEK:
484 ret=0;
485 break;
486 case BIO_C_FILE_TELL:
487 case BIO_CTRL_INFO:
488 ret=0;
489 break;
490 case BIO_C_SET_FD:
491 dgram_clear(b);
492 b->num= *((int *)ptr);
493 b->shutdown=(int)num;
494 b->init=1;
495 break;
496 case BIO_C_GET_FD:
497 if (b->init)
498 {
499 ip=(int *)ptr;
500 if (ip != NULL) *ip=b->num;
501 ret=b->num;
502 }
503 else
504 ret= -1;
505 break;
506 case BIO_CTRL_GET_CLOSE:
507 ret=b->shutdown;
508 break;
509 case BIO_CTRL_SET_CLOSE:
510 b->shutdown=(int)num;
511 break;
512 case BIO_CTRL_PENDING:
513 case BIO_CTRL_WPENDING:
514 ret=0;
515 break;
516 case BIO_CTRL_DUP:
517 case BIO_CTRL_FLUSH:
518 ret=1;
519 break;
520 case BIO_CTRL_DGRAM_CONNECT:
521 to = (struct sockaddr *)ptr;
522#if 0
523 if (connect(b->num, to, sizeof(struct sockaddr)) < 0)
524 { perror("connect"); ret = 0; }
525 else
526 {
527#endif
528 switch (to->sa_family)
529 {
530 case AF_INET:
531 memcpy(&data->peer,to,sizeof(data->peer.sa_in));
532 break;
533#if OPENSSL_USE_IPV6
534 case AF_INET6:
535 memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
536 break;
537#endif
538 default:
539 memcpy(&data->peer,to,sizeof(data->peer.sa));
540 break;
541 }
542#if 0
543 }
544#endif
545 break;
546 /* (Linux)kernel sets DF bit on outgoing IP packets */
547 case BIO_CTRL_DGRAM_MTU_DISCOVER:
548#if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
549 addr_len = (socklen_t)sizeof(addr);
550 memset((void *)&addr, 0, sizeof(addr));
551 if (getsockname(b->num, &addr.sa, &addr_len) < 0)
552 {
553 ret = 0;
554 break;
555 }
556 switch (addr.sa.sa_family)
557 {
558 case AF_INET:
559 sockopt_val = IP_PMTUDISC_DO;
560 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
561 &sockopt_val, sizeof(sockopt_val))) < 0)
562 perror("setsockopt");
563 break;
564#if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
565 case AF_INET6:
566 sockopt_val = IPV6_PMTUDISC_DO;
567 if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
568 &sockopt_val, sizeof(sockopt_val))) < 0)
569 perror("setsockopt");
570 break;
571#endif
572 default:
573 ret = -1;
574 break;
575 }
576 ret = -1;
577#else
578 break;
579#endif
580 case BIO_CTRL_DGRAM_QUERY_MTU:
581#if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
582 addr_len = (socklen_t)sizeof(addr);
583 memset((void *)&addr, 0, sizeof(addr));
584 if (getsockname(b->num, &addr.sa, &addr_len) < 0)
585 {
586 ret = 0;
587 break;
588 }
589 sockopt_len = sizeof(sockopt_val);
590 switch (addr.sa.sa_family)
591 {
592 case AF_INET:
593 if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
594 &sockopt_len)) < 0 || sockopt_val < 0)
595 {
596 ret = 0;
597 }
598 else
599 {
600 /* we assume that the transport protocol is UDP and no
601 * IP options are used.
602 */
603 data->mtu = sockopt_val - 8 - 20;
604 ret = data->mtu;
605 }
606 break;
607#if OPENSSL_USE_IPV6 && defined(IPV6_MTU)
608 case AF_INET6:
609 if ((ret = getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, (void *)&sockopt_val,
610 &sockopt_len)) < 0 || sockopt_val < 0)
611 {
612 ret = 0;
613 }
614 else
615 {
616 /* we assume that the transport protocol is UDP and no
617 * IPV6 options are used.
618 */
619 data->mtu = sockopt_val - 8 - 40;
620 ret = data->mtu;
621 }
622 break;
623#endif
624 default:
625 ret = 0;
626 break;
627 }
628#else
629 ret = 0;
630#endif
631 break;
632 case BIO_CTRL_DGRAM_GET_FALLBACK_MTU:
633 switch (data->peer.sa.sa_family)
634 {
635 case AF_INET:
636 ret = 576 - 20 - 8;
637 break;
638#if OPENSSL_USE_IPV6
639 case AF_INET6:
640#ifdef IN6_IS_ADDR_V4MAPPED
641 if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr))
642 ret = 576 - 20 - 8;
643 else
644#endif
645 ret = 1280 - 40 - 8;
646 break;
647#endif
648 default:
649 ret = 576 - 20 - 8;
650 break;
651 }
652 break;
653 case BIO_CTRL_DGRAM_GET_MTU:
654 return data->mtu;
655 break;
656 case BIO_CTRL_DGRAM_SET_MTU:
657 data->mtu = num;
658 ret = num;
659 break;
660 case BIO_CTRL_DGRAM_SET_CONNECTED:
661 to = (struct sockaddr *)ptr;
662
663 if ( to != NULL)
664 {
665 data->connected = 1;
666 switch (to->sa_family)
667 {
668 case AF_INET:
669 memcpy(&data->peer,to,sizeof(data->peer.sa_in));
670 break;
671#if OPENSSL_USE_IPV6
672 case AF_INET6:
673 memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
674 break;
675#endif
676 default:
677 memcpy(&data->peer,to,sizeof(data->peer.sa));
678 break;
679 }
680 }
681 else
682 {
683 data->connected = 0;
684 memset(&(data->peer), 0x00, sizeof(data->peer));
685 }
686 break;
687 case BIO_CTRL_DGRAM_GET_PEER:
688 switch (data->peer.sa.sa_family)
689 {
690 case AF_INET:
691 ret=sizeof(data->peer.sa_in);
692 break;
693#if OPENSSL_USE_IPV6
694 case AF_INET6:
695 ret=sizeof(data->peer.sa_in6);
696 break;
697#endif
698 default:
699 ret=sizeof(data->peer.sa);
700 break;
701 }
702 if (num==0 || num>ret)
703 num=ret;
704 memcpy(ptr,&data->peer,(ret=num));
705 break;
706 case BIO_CTRL_DGRAM_SET_PEER:
707 to = (struct sockaddr *) ptr;
708 switch (to->sa_family)
709 {
710 case AF_INET:
711 memcpy(&data->peer,to,sizeof(data->peer.sa_in));
712 break;
713#if OPENSSL_USE_IPV6
714 case AF_INET6:
715 memcpy(&data->peer,to,sizeof(data->peer.sa_in6));
716 break;
717#endif
718 default:
719 memcpy(&data->peer,to,sizeof(data->peer.sa));
720 break;
721 }
722 break;
723 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
724 memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));
725 break;
726#if defined(SO_RCVTIMEO)
727 case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:
728#ifdef OPENSSL_SYS_WINDOWS
729 {
730 struct timeval *tv = (struct timeval *)ptr;
731 int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
732 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
733 (void*)&timeout, sizeof(timeout)) < 0)
734 { perror("setsockopt"); ret = -1; }
735 }
736#else
737 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,
738 sizeof(struct timeval)) < 0)
739 { perror("setsockopt"); ret = -1; }
740#endif
741 break;
742 case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
743 {
744 union { size_t s; int i; } sz = {0};
745#ifdef OPENSSL_SYS_WINDOWS
746 int timeout;
747 struct timeval *tv = (struct timeval *)ptr;
748
749 sz.i = sizeof(timeout);
750 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
751 (void*)&timeout, &sz.i) < 0)
752 { perror("getsockopt"); ret = -1; }
753 else
754 {
755 tv->tv_sec = timeout / 1000;
756 tv->tv_usec = (timeout % 1000) * 1000;
757 ret = sizeof(*tv);
758 }
759#else
760 sz.i = sizeof(struct timeval);
761 if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
762 ptr, (void *)&sz) < 0)
763 { perror("getsockopt"); ret = -1; }
764 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
765 {
766 OPENSSL_assert(sz.s<=sizeof(struct timeval));
767 ret = (int)sz.s;
768 }
769 else
770 ret = sz.i;
771#endif
772 }
773 break;
774#endif
775#if defined(SO_SNDTIMEO)
776 case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:
777#ifdef OPENSSL_SYS_WINDOWS
778 {
779 struct timeval *tv = (struct timeval *)ptr;
780 int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
781 if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
782 (void*)&timeout, sizeof(timeout)) < 0)
783 { perror("setsockopt"); ret = -1; }
784 }
785#else
786 if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,
787 sizeof(struct timeval)) < 0)
788 { perror("setsockopt"); ret = -1; }
789#endif
790 break;
791 case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
792 {
793 union { size_t s; int i; } sz = {0};
794#ifdef OPENSSL_SYS_WINDOWS
795 int timeout;
796 struct timeval *tv = (struct timeval *)ptr;
797
798 sz.i = sizeof(timeout);
799 if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
800 (void*)&timeout, &sz.i) < 0)
801 { perror("getsockopt"); ret = -1; }
802 else
803 {
804 tv->tv_sec = timeout / 1000;
805 tv->tv_usec = (timeout % 1000) * 1000;
806 ret = sizeof(*tv);
807 }
808#else
809 sz.i = sizeof(struct timeval);
810 if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
811 ptr, (void *)&sz) < 0)
812 { perror("getsockopt"); ret = -1; }
813 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
814 {
815 OPENSSL_assert(sz.s<=sizeof(struct timeval));
816 ret = (int)sz.s;
817 }
818 else
819 ret = sz.i;
820#endif
821 }
822 break;
823#endif
824 case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
825 /* fall-through */
826 case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:
827#ifdef OPENSSL_SYS_WINDOWS
828 if ( data->_errno == WSAETIMEDOUT)
829#else
830 if ( data->_errno == EAGAIN)
831#endif
832 {
833 ret = 1;
834 data->_errno = 0;
835 }
836 else
837 ret = 0;
838 break;
839#ifdef EMSGSIZE
840 case BIO_CTRL_DGRAM_MTU_EXCEEDED:
841 if ( data->_errno == EMSGSIZE)
842 {
843 ret = 1;
844 data->_errno = 0;
845 }
846 else
847 ret = 0;
848 break;
849#endif
850 default:
851 ret=0;
852 break;
853 }
854 return(ret);
855 }
856
857static int dgram_puts(BIO *bp, const char *str)
858 {
859 int n,ret;
860
861 n=strlen(str);
862 ret=dgram_write(bp,str,n);
863 return(ret);
864 }
865
866#ifndef OPENSSL_NO_SCTP
867BIO_METHOD *BIO_s_datagram_sctp(void)
868 {
869 return(&methods_dgramp_sctp);
870 }
871
872BIO *BIO_new_dgram_sctp(int fd, int close_flag)
873 {
874 BIO *bio;
875 int ret, optval = 20000;
876 int auth_data = 0, auth_forward = 0;
877 unsigned char *p;
878 struct sctp_authchunk auth;
879 struct sctp_authchunks *authchunks;
880 socklen_t sockopt_len;
881#ifdef SCTP_AUTHENTICATION_EVENT
882#ifdef SCTP_EVENT
883 struct sctp_event event;
884#else
885 struct sctp_event_subscribe event;
886#endif
887#endif
888
889 bio=BIO_new(BIO_s_datagram_sctp());
890 if (bio == NULL) return(NULL);
891 BIO_set_fd(bio,fd,close_flag);
892
893 /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
894 auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE;
895 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct sctp_authchunk));
896 OPENSSL_assert(ret >= 0);
897 auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE;
898 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct sctp_authchunk));
899 OPENSSL_assert(ret >= 0);
900
901 /* Test if activation was successful. When using accept(),
902 * SCTP-AUTH has to be activated for the listening socket
903 * already, otherwise the connected socket won't use it. */
904 sockopt_len = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
905 authchunks = OPENSSL_malloc(sockopt_len);
906 memset(authchunks, 0, sizeof(sockopt_len));
907 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks, &sockopt_len);
908 OPENSSL_assert(ret >= 0);
909
910 for (p = (unsigned char*) authchunks->gauth_chunks;
911 p < (unsigned char*) authchunks + sockopt_len;
912 p += sizeof(uint8_t))
913 {
914 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1;
915 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward = 1;
916 }
917
918 OPENSSL_free(authchunks);
919
920 OPENSSL_assert(auth_data);
921 OPENSSL_assert(auth_forward);
922
923#ifdef SCTP_AUTHENTICATION_EVENT
924#ifdef SCTP_EVENT
925 memset(&event, 0, sizeof(struct sctp_event));
926 event.se_assoc_id = 0;
927 event.se_type = SCTP_AUTHENTICATION_EVENT;
928 event.se_on = 1;
929 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
930 OPENSSL_assert(ret >= 0);
931#else
932 sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe);
933 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len);
934 OPENSSL_assert(ret >= 0);
935
936 event.sctp_authentication_event = 1;
937
938 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
939 OPENSSL_assert(ret >= 0);
940#endif
941#endif
942
943 /* Disable partial delivery by setting the min size
944 * larger than the max record size of 2^14 + 2048 + 13
945 */
946 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval, sizeof(optval));
947 OPENSSL_assert(ret >= 0);
948
949 return(bio);
950 }
951
952int BIO_dgram_is_sctp(BIO *bio)
953 {
954 return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP);
955 }
956
957static int dgram_sctp_new(BIO *bi)
958 {
959 bio_dgram_sctp_data *data = NULL;
960
961 bi->init=0;
962 bi->num=0;
963 data = OPENSSL_malloc(sizeof(bio_dgram_sctp_data));
964 if (data == NULL)
965 return 0;
966 memset(data, 0x00, sizeof(bio_dgram_sctp_data));
967#ifdef SCTP_PR_SCTP_NONE
968 data->prinfo.pr_policy = SCTP_PR_SCTP_NONE;
969#endif
970 bi->ptr = data;
971
972 bi->flags=0;
973 return(1);
974 }
975
976static int dgram_sctp_free(BIO *a)
977 {
978 bio_dgram_sctp_data *data;
979
980 if (a == NULL) return(0);
981 if ( ! dgram_clear(a))
982 return 0;
983
984 data = (bio_dgram_sctp_data *)a->ptr;
985 if(data != NULL) OPENSSL_free(data);
986
987 return(1);
988 }
989
990#ifdef SCTP_AUTHENTICATION_EVENT
991void dgram_sctp_handle_auth_free_key_event(BIO *b, 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 {
998 struct sctp_authkeyid authkeyid;
999
1000 /* delete key */
1001 authkeyid.scact_keynumber = authkeyevent->auth_keynumber;
1002 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
1003 &authkeyid, sizeof(struct sctp_authkeyid));
1004 }
1005 }
1006#endif
1007
1008static int dgram_sctp_read(BIO *b, char *out, int outl)
1009 {
1010 int ret = 0, n = 0, i, optval;
1011 socklen_t optlen;
1012 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1013 union sctp_notification *snp;
1014 struct msghdr msg;
1015 struct iovec iov;
1016 struct cmsghdr *cmsg;
1017 char cmsgbuf[512];
1018
1019 if (out != NULL)
1020 {
1021 clear_socket_error();
1022
1023 do
1024 {
1025 memset(&data->rcvinfo, 0x00, sizeof(struct bio_dgram_sctp_rcvinfo));
1026 iov.iov_base = out;
1027 iov.iov_len = outl;
1028 msg.msg_name = NULL;
1029 msg.msg_namelen = 0;
1030 msg.msg_iov = &iov;
1031 msg.msg_iovlen = 1;
1032 msg.msg_control = cmsgbuf;
1033 msg.msg_controllen = 512;
1034 msg.msg_flags = 0;
1035 n = recvmsg(b->num, &msg, 0);
1036
1037 if (msg.msg_controllen > 0)
1038 {
1039 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1040 {
1041 if (cmsg->cmsg_level != IPPROTO_SCTP)
1042 continue;
1043#ifdef SCTP_RCVINFO
1044 if (cmsg->cmsg_type == SCTP_RCVINFO)
1045 {
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 {
1061 struct sctp_sndrcvinfo *sndrcvinfo;
1062
1063 sndrcvinfo = (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 (n <= 0)
1077 {
1078 if (n < 0)
1079 ret = n;
1080 break;
1081 }
1082
1083 if (msg.msg_flags & MSG_NOTIFICATION)
1084 {
1085 snp = (union sctp_notification*) out;
1086 if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EVENT)
1087 {
1088#ifdef SCTP_EVENT
1089 struct sctp_event event;
1090#else
1091 struct sctp_event_subscribe event;
1092 socklen_t eventsize;
1093#endif
1094 /* If a message has been delayed until the socket
1095 * is dry, it can be sent now.
1096 */
1097 if (data->saved_message.length > 0)
1098 {
1099 dgram_sctp_write(data->saved_message.bio, data->saved_message.data,
1100 data->saved_message.length);
1101 OPENSSL_free(data->saved_message.data);
1102 data->saved_message.length = 0;
1103 }
1104
1105 /* disable sender dry event */
1106#ifdef SCTP_EVENT
1107 memset(&event, 0, sizeof(struct sctp_event));
1108 event.se_assoc_id = 0;
1109 event.se_type = SCTP_SENDER_DRY_EVENT;
1110 event.se_on = 0;
1111 i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
1112 OPENSSL_assert(i >= 0);
1113#else
1114 eventsize = sizeof(struct sctp_event_subscribe);
1115 i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1116 OPENSSL_assert(i >= 0);
1117
1118 event.sctp_sender_dry_event = 0;
1119
1120 i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
1121 OPENSSL_assert(i >= 0);
1122#endif
1123 }
1124
1125#ifdef SCTP_AUTHENTICATION_EVENT
1126 if (snp->sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1127 dgram_sctp_handle_auth_free_key_event(b, snp);
1128#endif
1129
1130 if (data->handle_notifications != NULL)
1131 data->handle_notifications(b, data->notification_context, (void*) out);
1132
1133 memset(out, 0, outl);
1134 }
1135 else
1136 ret += n;
1137 }
1138 while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR) && (ret < outl));
1139
1140 if (ret > 0 && !(msg.msg_flags & MSG_EOR))
1141 {
1142 /* Partial message read, this should never happen! */
1143
1144 /* The buffer was too small, this means the peer sent
1145 * a message that was larger than allowed. */
1146 if (ret == outl)
1147 return -1;
1148
1149 /* Test if socket buffer can handle max record
1150 * size (2^14 + 2048 + 13)
1151 */
1152 optlen = (socklen_t) sizeof(int);
1153 ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen);
1154 OPENSSL_assert(ret >= 0);
1155 OPENSSL_assert(optval >= 18445);
1156
1157 /* Test if SCTP doesn't partially deliver below
1158 * max record size (2^14 + 2048 + 13)
1159 */
1160 optlen = (socklen_t) sizeof(int);
1161 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
1162 &optval, &optlen);
1163 OPENSSL_assert(ret >= 0);
1164 OPENSSL_assert(optval >= 18445);
1165
1166 /* Partially delivered notification??? Probably a bug.... */
1167 OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION));
1168
1169 /* Everything seems ok till now, so it's most likely
1170 * a message dropped by PR-SCTP.
1171 */
1172 memset(out, 0, outl);
1173 BIO_set_retry_read(b);
1174 return -1;
1175 }
1176
1177 BIO_clear_retry_flags(b);
1178 if (ret < 0)
1179 {
1180 if (BIO_dgram_should_retry(ret))
1181 {
1182 BIO_set_retry_read(b);
1183 data->_errno = get_last_socket_error();
1184 }
1185 }
1186
1187 /* Test if peer uses SCTP-AUTH before continuing */
1188 if (!data->peer_auth_tested)
1189 {
1190 int ii, auth_data = 0, auth_forward = 0;
1191 unsigned char *p;
1192 struct sctp_authchunks *authchunks;
1193
1194 optlen = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
1195 authchunks = OPENSSL_malloc(optlen);
1196 memset(authchunks, 0, sizeof(optlen));
1197 ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS, authchunks, &optlen);
1198 OPENSSL_assert(ii >= 0);
1199
1200 for (p = (unsigned char*) authchunks->gauth_chunks;
1201 p < (unsigned char*) authchunks + optlen;
1202 p += sizeof(uint8_t))
1203 {
1204 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1;
1205 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward = 1;
1206 }
1207
1208 OPENSSL_free(authchunks);
1209
1210 if (!auth_data || !auth_forward)
1211 {
1212 BIOerr(BIO_F_DGRAM_SCTP_READ,BIO_R_CONNECT_ERROR);
1213 return -1;
1214 }
1215
1216 data->peer_auth_tested = 1;
1217 }
1218 }
1219 return(ret);
1220 }
1221
1222static int dgram_sctp_write(BIO *b, const char *in, int inl)
1223 {
1224 int ret;
1225 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1226 struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo);
1227 struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo);
1228 struct bio_dgram_sctp_sndinfo handshake_sinfo;
1229 struct iovec iov[1];
1230 struct msghdr msg;
1231 struct cmsghdr *cmsg;
1232#if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1233 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) + CMSG_SPACE(sizeof(struct sctp_prinfo))];
1234 struct sctp_sndinfo *sndinfo;
1235 struct sctp_prinfo *prinfo;
1236#else
1237 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
1238 struct sctp_sndrcvinfo *sndrcvinfo;
1239#endif
1240
1241 clear_socket_error();
1242
1243 /* If we're send anything else than application data,
1244 * disable all user parameters and flags.
1245 */
1246 if (in[0] != 23) {
1247 memset(&handshake_sinfo, 0x00, sizeof(struct bio_dgram_sctp_sndinfo));
1248#ifdef SCTP_SACK_IMMEDIATELY
1249 handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY;
1250#endif
1251 sinfo = &handshake_sinfo;
1252 }
1253
1254 /* If we have to send a shutdown alert message and the
1255 * socket is not dry yet, we have to save it and send it
1256 * as soon as the socket gets dry.
1257 */
1258 if (data->save_shutdown && !BIO_dgram_sctp_wait_for_dry(b))
1259 {
1260 data->saved_message.bio = b;
1261 data->saved_message.length = inl;
1262 data->saved_message.data = OPENSSL_malloc(inl);
1263 memcpy(data->saved_message.data, in, inl);
1264 return inl;
1265 }
1266
1267 iov[0].iov_base = (char *)in;
1268 iov[0].iov_len = inl;
1269 msg.msg_name = NULL;
1270 msg.msg_namelen = 0;
1271 msg.msg_iov = iov;
1272 msg.msg_iovlen = 1;
1273 msg.msg_control = (caddr_t)cmsgbuf;
1274 msg.msg_controllen = 0;
1275 msg.msg_flags = 0;
1276#if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO)
1277 cmsg = (struct cmsghdr *)cmsgbuf;
1278 cmsg->cmsg_level = IPPROTO_SCTP;
1279 cmsg->cmsg_type = SCTP_SNDINFO;
1280 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1281 sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg);
1282 memset(sndinfo, 0, sizeof(struct sctp_sndinfo));
1283 sndinfo->snd_sid = sinfo->snd_sid;
1284 sndinfo->snd_flags = sinfo->snd_flags;
1285 sndinfo->snd_ppid = sinfo->snd_ppid;
1286 sndinfo->snd_context = sinfo->snd_context;
1287 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1288
1289 cmsg = (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))];
1290 cmsg->cmsg_level = IPPROTO_SCTP;
1291 cmsg->cmsg_type = SCTP_PRINFO;
1292 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1293 prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg);
1294 memset(prinfo, 0, sizeof(struct sctp_prinfo));
1295 prinfo->pr_policy = pinfo->pr_policy;
1296 prinfo->pr_value = pinfo->pr_value;
1297 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1298#else
1299 cmsg = (struct cmsghdr *)cmsgbuf;
1300 cmsg->cmsg_level = IPPROTO_SCTP;
1301 cmsg->cmsg_type = SCTP_SNDRCV;
1302 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
1303 sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
1304 memset(sndrcvinfo, 0, sizeof(struct sctp_sndrcvinfo));
1305 sndrcvinfo->sinfo_stream = sinfo->snd_sid;
1306 sndrcvinfo->sinfo_flags = sinfo->snd_flags;
1307#ifdef __FreeBSD__
1308 sndrcvinfo->sinfo_flags |= pinfo->pr_policy;
1309#endif
1310 sndrcvinfo->sinfo_ppid = sinfo->snd_ppid;
1311 sndrcvinfo->sinfo_context = sinfo->snd_context;
1312 sndrcvinfo->sinfo_timetolive = pinfo->pr_value;
1313 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
1314#endif
1315
1316 ret = sendmsg(b->num, &msg, 0);
1317
1318 BIO_clear_retry_flags(b);
1319 if (ret <= 0)
1320 {
1321 if (BIO_dgram_should_retry(ret))
1322 {
1323 BIO_set_retry_write(b);
1324 data->_errno = get_last_socket_error();
1325 }
1326 }
1327 return(ret);
1328 }
1329
1330static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr)
1331 {
1332 long ret=1;
1333 bio_dgram_sctp_data *data = NULL;
1334 socklen_t sockopt_len = 0;
1335 struct sctp_authkeyid authkeyid;
1336 struct sctp_authkey *authkey;
1337
1338 data = (bio_dgram_sctp_data *)b->ptr;
1339
1340 switch (cmd)
1341 {
1342 case BIO_CTRL_DGRAM_QUERY_MTU:
1343 /* Set to maximum (2^14)
1344 * and ignore user input to enable transport
1345 * protocol fragmentation.
1346 * Returns always 2^14.
1347 */
1348 data->mtu = 16384;
1349 ret = data->mtu;
1350 break;
1351 case BIO_CTRL_DGRAM_SET_MTU:
1352 /* Set to maximum (2^14)
1353 * and ignore input to enable transport
1354 * protocol fragmentation.
1355 * Returns always 2^14.
1356 */
1357 data->mtu = 16384;
1358 ret = data->mtu;
1359 break;
1360 case BIO_CTRL_DGRAM_SET_CONNECTED:
1361 case BIO_CTRL_DGRAM_CONNECT:
1362 /* Returns always -1. */
1363 ret = -1;
1364 break;
1365 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
1366 /* SCTP doesn't need the DTLS timer
1367 * Returns always 1.
1368 */
1369 break;
1370 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
1371 if (num > 0)
1372 data->in_handshake = 1;
1373 else
1374 data->in_handshake = 0;
1375
1376 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY, &data->in_handshake, sizeof(int));
1377 break;
1378 case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY:
1379 /* New shared key for SCTP AUTH.
1380 * Returns 0 on success, -1 otherwise.
1381 */
1382
1383 /* Get active key */
1384 sockopt_len = sizeof(struct sctp_authkeyid);
1385 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, &sockopt_len);
1386 if (ret < 0) break;
1387
1388 /* Add new key */
1389 sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t);
1390 authkey = OPENSSL_malloc(sockopt_len);
1391 memset(authkey, 0x00, sockopt_len);
1392 authkey->sca_keynumber = authkeyid.scact_keynumber + 1;
1393#ifndef __FreeBSD__
1394 /* This field is missing in FreeBSD 8.2 and earlier,
1395 * and FreeBSD 8.3 and higher work without it.
1396 */
1397 authkey->sca_keylength = 64;
1398#endif
1399 memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t));
1400
1401 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey, sockopt_len);
1402 if (ret < 0) break;
1403
1404 /* Reset active key */
1405 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1406 &authkeyid, sizeof(struct sctp_authkeyid));
1407 if (ret < 0) break;
1408
1409 break;
1410 case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY:
1411 /* Returns 0 on success, -1 otherwise. */
1412
1413 /* Get active key */
1414 sockopt_len = sizeof(struct sctp_authkeyid);
1415 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, &sockopt_len);
1416 if (ret < 0) break;
1417
1418 /* Set active key */
1419 authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1;
1420 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY,
1421 &authkeyid, sizeof(struct sctp_authkeyid));
1422 if (ret < 0) break;
1423
1424 /* CCS has been sent, so remember that and fall through
1425 * to check if we need to deactivate an old key
1426 */
1427 data->ccs_sent = 1;
1428
1429 case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD:
1430 /* Returns 0 on success, -1 otherwise. */
1431
1432 /* Has this command really been called or is this just a fall-through? */
1433 if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD)
1434 data->ccs_rcvd = 1;
1435
1436 /* CSS has been both, received and sent, so deactivate an old key */
1437 if (data->ccs_rcvd == 1 && data->ccs_sent == 1)
1438 {
1439 /* Get active key */
1440 sockopt_len = sizeof(struct sctp_authkeyid);
1441 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, &sockopt_len);
1442 if (ret < 0) break;
1443
1444 /* Deactivate key or delete second last key if
1445 * SCTP_AUTHENTICATION_EVENT is not available.
1446 */
1447 authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
1448#ifdef SCTP_AUTH_DEACTIVATE_KEY
1449 sockopt_len = sizeof(struct sctp_authkeyid);
1450 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY,
1451 &authkeyid, sockopt_len);
1452 if (ret < 0) break;
1453#endif
1454#ifndef SCTP_AUTHENTICATION_EVENT
1455 if (authkeyid.scact_keynumber > 0)
1456 {
1457 authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1;
1458 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
1459 &authkeyid, sizeof(struct sctp_authkeyid));
1460 if (ret < 0) break;
1461 }
1462#endif
1463
1464 data->ccs_rcvd = 0;
1465 data->ccs_sent = 0;
1466 }
1467 break;
1468 case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO:
1469 /* Returns the size of the copied struct. */
1470 if (num > (long) sizeof(struct bio_dgram_sctp_sndinfo))
1471 num = sizeof(struct bio_dgram_sctp_sndinfo);
1472
1473 memcpy(ptr, &(data->sndinfo), num);
1474 ret = num;
1475 break;
1476 case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO:
1477 /* Returns the size of the copied struct. */
1478 if (num > (long) sizeof(struct bio_dgram_sctp_sndinfo))
1479 num = sizeof(struct bio_dgram_sctp_sndinfo);
1480
1481 memcpy(&(data->sndinfo), ptr, num);
1482 break;
1483 case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO:
1484 /* Returns the size of the copied struct. */
1485 if (num > (long) sizeof(struct bio_dgram_sctp_rcvinfo))
1486 num = sizeof(struct bio_dgram_sctp_rcvinfo);
1487
1488 memcpy(ptr, &data->rcvinfo, num);
1489
1490 ret = num;
1491 break;
1492 case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO:
1493 /* Returns the size of the copied struct. */
1494 if (num > (long) sizeof(struct bio_dgram_sctp_rcvinfo))
1495 num = sizeof(struct bio_dgram_sctp_rcvinfo);
1496
1497 memcpy(&(data->rcvinfo), ptr, num);
1498 break;
1499 case BIO_CTRL_DGRAM_SCTP_GET_PRINFO:
1500 /* Returns the size of the copied struct. */
1501 if (num > (long) sizeof(struct bio_dgram_sctp_prinfo))
1502 num = sizeof(struct bio_dgram_sctp_prinfo);
1503
1504 memcpy(ptr, &(data->prinfo), num);
1505 ret = num;
1506 break;
1507 case BIO_CTRL_DGRAM_SCTP_SET_PRINFO:
1508 /* Returns the size of the copied struct. */
1509 if (num > (long) sizeof(struct bio_dgram_sctp_prinfo))
1510 num = sizeof(struct bio_dgram_sctp_prinfo);
1511
1512 memcpy(&(data->prinfo), ptr, num);
1513 break;
1514 case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN:
1515 /* Returns always 1. */
1516 if (num > 0)
1517 data->save_shutdown = 1;
1518 else
1519 data->save_shutdown = 0;
1520 break;
1521
1522 default:
1523 /* Pass to default ctrl function to
1524 * process SCTP unspecific commands
1525 */
1526 ret=dgram_ctrl(b, cmd, num, ptr);
1527 break;
1528 }
1529 return(ret);
1530 }
1531
1532int BIO_dgram_sctp_notification_cb(BIO *b,
1533 void (*handle_notifications)(BIO *bio, void *context, void *buf),
1534 void *context)
1535 {
1536 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr;
1537
1538 if (handle_notifications != NULL)
1539 {
1540 data->handle_notifications = handle_notifications;
1541 data->notification_context = context;
1542 }
1543 else
1544 return -1;
1545
1546 return 0;
1547 }
1548
1549int BIO_dgram_sctp_wait_for_dry(BIO *b)
1550{
1551 int is_dry = 0;
1552 int n, sockflags, ret;
1553 union sctp_notification snp;
1554 struct msghdr msg;
1555 struct iovec iov;
1556#ifdef SCTP_EVENT
1557 struct sctp_event event;
1558#else
1559 struct sctp_event_subscribe event;
1560 socklen_t eventsize;
1561#endif
1562 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1563
1564 /* set sender dry event */
1565#ifdef SCTP_EVENT
1566 memset(&event, 0, sizeof(struct sctp_event));
1567 event.se_assoc_id = 0;
1568 event.se_type = SCTP_SENDER_DRY_EVENT;
1569 event.se_on = 1;
1570 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
1571#else
1572 eventsize = sizeof(struct sctp_event_subscribe);
1573 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1574 if (ret < 0)
1575 return -1;
1576
1577 event.sctp_sender_dry_event = 1;
1578
1579 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
1580#endif
1581 if (ret < 0)
1582 return -1;
1583
1584 /* peek for notification */
1585 memset(&snp, 0x00, sizeof(union sctp_notification));
1586 iov.iov_base = (char *)&snp;
1587 iov.iov_len = sizeof(union sctp_notification);
1588 msg.msg_name = NULL;
1589 msg.msg_namelen = 0;
1590 msg.msg_iov = &iov;
1591 msg.msg_iovlen = 1;
1592 msg.msg_control = NULL;
1593 msg.msg_controllen = 0;
1594 msg.msg_flags = 0;
1595
1596 n = recvmsg(b->num, &msg, MSG_PEEK);
1597 if (n <= 0)
1598 {
1599 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_socket_error() != EWOULDBLOCK))
1600 return -1;
1601 else
1602 return 0;
1603 }
1604
1605 /* if we find a notification, process it and try again if necessary */
1606 while (msg.msg_flags & MSG_NOTIFICATION)
1607 {
1608 memset(&snp, 0x00, sizeof(union sctp_notification));
1609 iov.iov_base = (char *)&snp;
1610 iov.iov_len = sizeof(union sctp_notification);
1611 msg.msg_name = NULL;
1612 msg.msg_namelen = 0;
1613 msg.msg_iov = &iov;
1614 msg.msg_iovlen = 1;
1615 msg.msg_control = NULL;
1616 msg.msg_controllen = 0;
1617 msg.msg_flags = 0;
1618
1619 n = recvmsg(b->num, &msg, 0);
1620 if (n <= 0)
1621 {
1622 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_socket_error() != EWOULDBLOCK))
1623 return -1;
1624 else
1625 return is_dry;
1626 }
1627
1628 if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT)
1629 {
1630 is_dry = 1;
1631
1632 /* disable sender dry event */
1633#ifdef SCTP_EVENT
1634 memset(&event, 0, sizeof(struct sctp_event));
1635 event.se_assoc_id = 0;
1636 event.se_type = SCTP_SENDER_DRY_EVENT;
1637 event.se_on = 0;
1638 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
1639#else
1640 eventsize = (socklen_t) sizeof(struct sctp_event_subscribe);
1641 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
1642 if (ret < 0)
1643 return -1;
1644
1645 event.sctp_sender_dry_event = 0;
1646
1647 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
1648#endif
1649 if (ret < 0)
1650 return -1;
1651 }
1652
1653#ifdef SCTP_AUTHENTICATION_EVENT
1654 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT)
1655 dgram_sctp_handle_auth_free_key_event(b, &snp);
1656#endif
1657
1658 if (data->handle_notifications != NULL)
1659 data->handle_notifications(b, data->notification_context, (void*) &snp);
1660
1661 /* found notification, peek again */
1662 memset(&snp, 0x00, sizeof(union sctp_notification));
1663 iov.iov_base = (char *)&snp;
1664 iov.iov_len = sizeof(union sctp_notification);
1665 msg.msg_name = NULL;
1666 msg.msg_namelen = 0;
1667 msg.msg_iov = &iov;
1668 msg.msg_iovlen = 1;
1669 msg.msg_control = NULL;
1670 msg.msg_controllen = 0;
1671 msg.msg_flags = 0;
1672
1673 /* if we have seen the dry already, don't wait */
1674 if (is_dry)
1675 {
1676 sockflags = fcntl(b->num, F_GETFL, 0);
1677 fcntl(b->num, F_SETFL, O_NONBLOCK);
1678 }
1679
1680 n = recvmsg(b->num, &msg, MSG_PEEK);
1681
1682 if (is_dry)
1683 {
1684 fcntl(b->num, F_SETFL, sockflags);
1685 }
1686
1687 if (n <= 0)
1688 {
1689 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_socket_error() != EWOULDBLOCK))
1690 return -1;
1691 else
1692 return is_dry;
1693 }
1694 }
1695
1696 /* read anything else */
1697 return is_dry;
1698}
1699
1700int BIO_dgram_sctp_msg_waiting(BIO *b)
1701 {
1702 int n, sockflags;
1703 union sctp_notification snp;
1704 struct msghdr msg;
1705 struct iovec iov;
1706 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr;
1707
1708 /* Check if there are any messages waiting to be read */
1709 do
1710 {
1711 memset(&snp, 0x00, sizeof(union sctp_notification));
1712 iov.iov_base = (char *)&snp;
1713 iov.iov_len = sizeof(union sctp_notification);
1714 msg.msg_name = NULL;
1715 msg.msg_namelen = 0;
1716 msg.msg_iov = &iov;
1717 msg.msg_iovlen = 1;
1718 msg.msg_control = NULL;
1719 msg.msg_controllen = 0;
1720 msg.msg_flags = 0;
1721
1722 sockflags = fcntl(b->num, F_GETFL, 0);
1723 fcntl(b->num, F_SETFL, O_NONBLOCK);
1724 n = recvmsg(b->num, &msg, MSG_PEEK);
1725 fcntl(b->num, F_SETFL, sockflags);
1726
1727 /* if notification, process and try again */
1728 if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION))
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 memset(&snp, 0x00, sizeof(union sctp_notification));
1736 iov.iov_base = (char *)&snp;
1737 iov.iov_len = sizeof(union sctp_notification);
1738 msg.msg_name = NULL;
1739 msg.msg_namelen = 0;
1740 msg.msg_iov = &iov;
1741 msg.msg_iovlen = 1;
1742 msg.msg_control = NULL;
1743 msg.msg_controllen = 0;
1744 msg.msg_flags = 0;
1745 n = recvmsg(b->num, &msg, 0);
1746
1747 if (data->handle_notifications != NULL)
1748 data->handle_notifications(b, data->notification_context, (void*) &snp);
1749 }
1750
1751 } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION));
1752
1753 /* Return 1 if there is a message to be read, return 0 otherwise. */
1754 if (n > 0)
1755 return 1;
1756 else
1757 return 0;
1758 }
1759
1760static int dgram_sctp_puts(BIO *bp, const char *str)
1761 {
1762 int n,ret;
1763
1764 n=strlen(str);
1765 ret=dgram_sctp_write(bp,str,n);
1766 return(ret);
1767 }
1768#endif
1769
1770static int BIO_dgram_should_retry(int i)
1771 {
1772 int err;
1773
1774 if ((i == 0) || (i == -1))
1775 {
1776 err=get_last_socket_error();
1777
1778#if defined(OPENSSL_SYS_WINDOWS)
1779 /* If the socket return value (i) is -1
1780 * and err is unexpectedly 0 at this point,
1781 * the error code was overwritten by
1782 * another system call before this error
1783 * handling is called.
1784 */
1785#endif
1786
1787 return(BIO_dgram_non_fatal_error(err));
1788 }
1789 return(0);
1790 }
1791
1792int BIO_dgram_non_fatal_error(int err)
1793 {
1794 switch (err)
1795 {
1796#if defined(OPENSSL_SYS_WINDOWS)
1797# if defined(WSAEWOULDBLOCK)
1798 case WSAEWOULDBLOCK:
1799# endif
1800
1801# if 0 /* This appears to always be an error */
1802# if defined(WSAENOTCONN)
1803 case WSAENOTCONN:
1804# endif
1805# endif
1806#endif
1807
1808#ifdef EWOULDBLOCK
1809# ifdef WSAEWOULDBLOCK
1810# if WSAEWOULDBLOCK != EWOULDBLOCK
1811 case EWOULDBLOCK:
1812# endif
1813# else
1814 case EWOULDBLOCK:
1815# endif
1816#endif
1817
1818#ifdef EINTR
1819 case EINTR:
1820#endif
1821
1822#ifdef EAGAIN
1823#if EWOULDBLOCK != EAGAIN
1824 case EAGAIN:
1825# endif
1826#endif
1827
1828#ifdef EPROTO
1829 case EPROTO:
1830#endif
1831
1832#ifdef EINPROGRESS
1833 case EINPROGRESS:
1834#endif
1835
1836#ifdef EALREADY
1837 case EALREADY:
1838#endif
1839
1840 return(1);
1841 /* break; */
1842 default:
1843 break;
1844 }
1845 return(0);
1846 }
1847
1848static void get_current_time(struct timeval *t)
1849 {
1850#ifdef OPENSSL_SYS_WIN32
1851 struct _timeb tb;
1852 _ftime(&tb);
1853 t->tv_sec = (long)tb.time;
1854 t->tv_usec = (long)tb.millitm * 1000;
1855#elif defined(OPENSSL_SYS_VMS)
1856 struct timeb tb;
1857 ftime(&tb);
1858 t->tv_sec = (long)tb.time;
1859 t->tv_usec = (long)tb.millitm * 1000;
1860#else
1861 gettimeofday(t, NULL);
1862#endif
1863 }
1864
1865#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-09 06:54:10 +0000