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-rw-r--r--src/lib/libcrypto/bio/bio_lib.c886
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diff --git a/src/lib/libcrypto/bio/bio_lib.c b/src/lib/libcrypto/bio/bio_lib.c
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1/* $OpenBSD: bio_lib.c,v 1.54 2024/07/09 06:14:59 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <errno.h>
60#include <limits.h>
61#include <stdio.h>
62
63#include <openssl/bio.h>
64#include <openssl/crypto.h>
65#include <openssl/err.h>
66#include <openssl/stack.h>
67
68#include "bio_local.h"
69
70/*
71 * Helper function to work out whether to call the new style callback or the old
72 * one, and translate between the two.
73 *
74 * This has a long return type for consistency with the old callback. Similarly
75 * for the "long" used for "inret"
76 */
77static long
78bio_call_callback(BIO *b, int oper, const char *argp, size_t len, int argi,
79 long argl, long inret, size_t *processed)
80{
81 long ret;
82 int bareoper;
83
84 if (b->callback_ex != NULL)
85 return b->callback_ex(b, oper, argp, len, argi, argl, inret,
86 processed);
87
88 /*
89 * We have an old style callback, so we will have to do nasty casts and
90 * check for overflows.
91 */
92
93 bareoper = oper & ~BIO_CB_RETURN;
94
95 if (bareoper == BIO_CB_READ || bareoper == BIO_CB_WRITE ||
96 bareoper == BIO_CB_GETS) {
97 /* In this case len is set and should be used instead of argi. */
98 if (len > INT_MAX)
99 return -1;
100 argi = (int)len;
101 }
102
103 if (inret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
104 if (*processed > INT_MAX)
105 return -1;
106 inret = *processed;
107 }
108
109 ret = b->callback(b, oper, argp, argi, argl, inret);
110
111 if (ret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
112 *processed = (size_t)ret;
113 ret = 1;
114 }
115
116 return ret;
117}
118
119int
120BIO_get_new_index(void)
121{
122 static int bio_type_index = BIO_TYPE_START;
123 int index;
124
125 /* The index will collide with the BIO flag bits if it exceeds 255. */
126 index = CRYPTO_add(&bio_type_index, 1, CRYPTO_LOCK_BIO);
127 if (index > 255)
128 return -1;
129
130 return index;
131}
132LCRYPTO_ALIAS(BIO_get_new_index);
133
134BIO *
135BIO_new(const BIO_METHOD *method)
136{
137 BIO *bio = NULL;
138
139 if ((bio = calloc(1, sizeof(BIO))) == NULL) {
140 BIOerror(ERR_R_MALLOC_FAILURE);
141 return NULL;
142 }
143
144 bio->method = method;
145 bio->shutdown = 1;
146 bio->references = 1;
147
148 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
149
150 if (method->create != NULL) {
151 if (!method->create(bio)) {
152 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio,
153 &bio->ex_data);
154 free(bio);
155 return NULL;
156 }
157 }
158
159 return bio;
160}
161LCRYPTO_ALIAS(BIO_new);
162
163int
164BIO_free(BIO *bio)
165{
166 int ret;
167
168 if (bio == NULL)
169 return 0;
170
171 if (CRYPTO_add(&bio->references, -1, CRYPTO_LOCK_BIO) > 0)
172 return 1;
173
174 if (bio->callback != NULL || bio->callback_ex != NULL) {
175 if ((ret = (int)bio_call_callback(bio, BIO_CB_FREE, NULL, 0, 0,
176 0L, 1L, NULL)) <= 0)
177 return ret;
178 }
179
180 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
181
182 if (bio->method != NULL && bio->method->destroy != NULL)
183 bio->method->destroy(bio);
184
185 free(bio);
186
187 return 1;
188}
189LCRYPTO_ALIAS(BIO_free);
190
191void
192BIO_vfree(BIO *bio)
193{
194 BIO_free(bio);
195}
196LCRYPTO_ALIAS(BIO_vfree);
197
198int
199BIO_up_ref(BIO *bio)
200{
201 return CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO) > 1;
202}
203LCRYPTO_ALIAS(BIO_up_ref);
204
205void *
206BIO_get_data(BIO *bio)
207{
208 return bio->ptr;
209}
210LCRYPTO_ALIAS(BIO_get_data);
211
212void
213BIO_set_data(BIO *bio, void *ptr)
214{
215 bio->ptr = ptr;
216}
217LCRYPTO_ALIAS(BIO_set_data);
218
219int
220BIO_get_init(BIO *bio)
221{
222 return bio->init;
223}
224LCRYPTO_ALIAS(BIO_get_init);
225
226void
227BIO_set_init(BIO *bio, int init)
228{
229 bio->init = init;
230}
231LCRYPTO_ALIAS(BIO_set_init);
232
233int
234BIO_get_shutdown(BIO *bio)
235{
236 return bio->shutdown;
237}
238LCRYPTO_ALIAS(BIO_get_shutdown);
239
240void
241BIO_set_shutdown(BIO *bio, int shut)
242{
243 bio->shutdown = shut;
244}
245LCRYPTO_ALIAS(BIO_set_shutdown);
246
247void
248BIO_clear_flags(BIO *bio, int flags)
249{
250 bio->flags &= ~flags;
251}
252LCRYPTO_ALIAS(BIO_clear_flags);
253
254int
255BIO_test_flags(const BIO *bio, int flags)
256{
257 return (bio->flags & flags);
258}
259LCRYPTO_ALIAS(BIO_test_flags);
260
261void
262BIO_set_flags(BIO *bio, int flags)
263{
264 bio->flags |= flags;
265}
266LCRYPTO_ALIAS(BIO_set_flags);
267
268BIO_callback_fn
269BIO_get_callback(const BIO *bio)
270{
271 return bio->callback;
272}
273LCRYPTO_ALIAS(BIO_get_callback);
274
275void
276BIO_set_callback(BIO *bio, BIO_callback_fn cb)
277{
278 bio->callback = cb;
279}
280LCRYPTO_ALIAS(BIO_set_callback);
281
282BIO_callback_fn_ex
283BIO_get_callback_ex(const BIO *bio)
284{
285 return bio->callback_ex;
286}
287LCRYPTO_ALIAS(BIO_get_callback_ex);
288
289void
290BIO_set_callback_ex(BIO *bio, BIO_callback_fn_ex cb)
291{
292 bio->callback_ex = cb;
293}
294LCRYPTO_ALIAS(BIO_set_callback_ex);
295
296void
297BIO_set_callback_arg(BIO *bio, char *arg)
298{
299 bio->cb_arg = arg;
300}
301LCRYPTO_ALIAS(BIO_set_callback_arg);
302
303char *
304BIO_get_callback_arg(const BIO *bio)
305{
306 return bio->cb_arg;
307}
308LCRYPTO_ALIAS(BIO_get_callback_arg);
309
310const char *
311BIO_method_name(const BIO *bio)
312{
313 return bio->method->name;
314}
315LCRYPTO_ALIAS(BIO_method_name);
316
317int
318BIO_method_type(const BIO *bio)
319{
320 return bio->method->type;
321}
322LCRYPTO_ALIAS(BIO_method_type);
323
324int
325BIO_read(BIO *b, void *out, int outl)
326{
327 size_t readbytes = 0;
328 int ret;
329
330 if (b == NULL) {
331 BIOerror(ERR_R_PASSED_NULL_PARAMETER);
332 return (-1);
333 }
334
335 if (outl <= 0)
336 return (0);
337
338 if (out == NULL) {
339 BIOerror(ERR_R_PASSED_NULL_PARAMETER);
340 return (-1);
341 }
342
343 if (b->method == NULL || b->method->bread == NULL) {
344 BIOerror(BIO_R_UNSUPPORTED_METHOD);
345 return (-2);
346 }
347
348 if (b->callback != NULL || b->callback_ex != NULL) {
349 if ((ret = (int)bio_call_callback(b, BIO_CB_READ, out, outl, 0,
350 0L, 1L, NULL)) <= 0)
351 return (ret);
352 }
353
354 if (!b->init) {
355 BIOerror(BIO_R_UNINITIALIZED);
356 return (-2);
357 }
358
359 if ((ret = b->method->bread(b, out, outl)) > 0)
360 readbytes = (size_t)ret;
361
362 b->num_read += readbytes;
363
364 if (b->callback != NULL || b->callback_ex != NULL) {
365 ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN,
366 out, outl, 0, 0L, (ret > 0) ? 1 : ret, &readbytes);
367 }
368
369 if (ret > 0) {
370 if (readbytes > INT_MAX) {
371 BIOerror(BIO_R_LENGTH_TOO_LONG);
372 ret = -1;
373 } else {
374 ret = (int)readbytes;
375 }
376 }
377
378 return (ret);
379}
380LCRYPTO_ALIAS(BIO_read);
381
382int
383BIO_write(BIO *b, const void *in, int inl)
384{
385 size_t writebytes = 0;
386 int ret;
387
388 /* Not an error. Things like SMIME_text() assume that this succeeds. */
389 if (b == NULL)
390 return (0);
391
392 if (inl <= 0)
393 return (0);
394
395 if (in == NULL) {
396 BIOerror(ERR_R_PASSED_NULL_PARAMETER);
397 return (-1);
398 }
399
400 if (b->method == NULL || b->method->bwrite == NULL) {
401 BIOerror(BIO_R_UNSUPPORTED_METHOD);
402 return (-2);
403 }
404
405 if (b->callback != NULL || b->callback_ex != NULL) {
406 if ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, in, inl, 0,
407 0L, 1L, NULL)) <= 0)
408 return (ret);
409 }
410
411 if (!b->init) {
412 BIOerror(BIO_R_UNINITIALIZED);
413 return (-2);
414 }
415
416 if ((ret = b->method->bwrite(b, in, inl)) > 0)
417 writebytes = ret;
418
419 b->num_write += writebytes;
420
421 if (b->callback != NULL || b->callback_ex != NULL) {
422 ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN,
423 in, inl, 0, 0L, (ret > 0) ? 1 : ret, &writebytes);
424 }
425
426 if (ret > 0) {
427 if (writebytes > INT_MAX) {
428 BIOerror(BIO_R_LENGTH_TOO_LONG);
429 ret = -1;
430 } else {
431 ret = (int)writebytes;
432 }
433 }
434
435 return (ret);
436}
437LCRYPTO_ALIAS(BIO_write);
438
439int
440BIO_puts(BIO *b, const char *in)
441{
442 size_t writebytes = 0;
443 int ret;
444
445 if (b == NULL || b->method == NULL || b->method->bputs == NULL) {
446 BIOerror(BIO_R_UNSUPPORTED_METHOD);
447 return (-2);
448 }
449
450 if (b->callback != NULL || b->callback_ex != NULL) {
451 if ((ret = (int)bio_call_callback(b, BIO_CB_PUTS, in, 0, 0, 0L,
452 1L, NULL)) <= 0)
453 return (ret);
454 }
455
456 if (!b->init) {
457 BIOerror(BIO_R_UNINITIALIZED);
458 return (-2);
459 }
460
461 if ((ret = b->method->bputs(b, in)) > 0)
462 writebytes = ret;
463
464 b->num_write += writebytes;
465
466 if (b->callback != NULL || b->callback_ex != NULL) {
467 ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN,
468 in, 0, 0, 0L, (ret > 0) ? 1 : ret, &writebytes);
469 }
470
471 if (ret > 0) {
472 if (writebytes > INT_MAX) {
473 BIOerror(BIO_R_LENGTH_TOO_LONG);
474 ret = -1;
475 } else {
476 ret = (int)writebytes;
477 }
478 }
479
480 return (ret);
481}
482LCRYPTO_ALIAS(BIO_puts);
483
484int
485BIO_gets(BIO *b, char *in, int inl)
486{
487 size_t readbytes = 0;
488 int ret;
489
490 if (b == NULL || b->method == NULL || b->method->bgets == NULL) {
491 BIOerror(BIO_R_UNSUPPORTED_METHOD);
492 return (-2);
493 }
494
495 if (b->callback != NULL || b->callback_ex != NULL) {
496 if ((ret = (int)bio_call_callback(b, BIO_CB_GETS, in, inl, 0, 0L,
497 1, NULL)) <= 0)
498 return (ret);
499 }
500
501 if (!b->init) {
502 BIOerror(BIO_R_UNINITIALIZED);
503 return (-2);
504 }
505
506 if ((ret = b->method->bgets(b, in, inl)) > 0)
507 readbytes = ret;
508
509 if (b->callback != NULL || b->callback_ex != NULL) {
510 ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, in,
511 inl, 0, 0L, (ret > 0) ? 1 : ret, &readbytes);
512 }
513
514 if (ret > 0) {
515 if (readbytes > INT_MAX) {
516 BIOerror(BIO_R_LENGTH_TOO_LONG);
517 ret = -1;
518 } else {
519 ret = (int)readbytes;
520 }
521 }
522
523 return (ret);
524}
525LCRYPTO_ALIAS(BIO_gets);
526
527int
528BIO_indent(BIO *bio, int indent, int max)
529{
530 if (indent > max)
531 indent = max;
532 if (indent <= 0)
533 return 1;
534 if (BIO_printf(bio, "%*s", indent, "") <= 0)
535 return 0;
536 return 1;
537}
538LCRYPTO_ALIAS(BIO_indent);
539
540long
541BIO_int_ctrl(BIO *bio, int cmd, long larg, int iarg)
542{
543 int i;
544
545 i = iarg;
546 return BIO_ctrl(bio, cmd, larg, (char *)&i);
547}
548LCRYPTO_ALIAS(BIO_int_ctrl);
549
550char *
551BIO_ptr_ctrl(BIO *bio, int cmd, long larg)
552{
553 char *p = NULL;
554
555 if (BIO_ctrl(bio, cmd, larg, (char *)&p) <= 0)
556 return NULL;
557 else
558 return p;
559}
560LCRYPTO_ALIAS(BIO_ptr_ctrl);
561
562long
563BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
564{
565 long ret;
566
567 if (b == NULL)
568 return (0);
569
570 if (b->method == NULL || b->method->ctrl == NULL) {
571 BIOerror(BIO_R_UNSUPPORTED_METHOD);
572 return (-2);
573 }
574
575 if (b->callback != NULL || b->callback_ex != NULL) {
576 if ((ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg,
577 1L, NULL)) <= 0)
578 return (ret);
579 }
580
581 ret = b->method->ctrl(b, cmd, larg, parg);
582
583 if (b->callback != NULL || b->callback_ex != NULL) {
584 ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0,
585 cmd, larg, ret, NULL);
586 }
587
588 return (ret);
589}
590LCRYPTO_ALIAS(BIO_ctrl);
591
592long
593BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
594{
595 long ret;
596
597 if (b == NULL)
598 return (0);
599
600 if (b->method == NULL || b->method->callback_ctrl == NULL ||
601 cmd != BIO_CTRL_SET_CALLBACK) {
602 BIOerror(BIO_R_UNSUPPORTED_METHOD);
603 return (-2);
604 }
605
606 if (b->callback != NULL || b->callback_ex != NULL) {
607 if ((ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0,
608 cmd, 0, 1L, NULL)) <= 0)
609 return (ret);
610 }
611
612 ret = b->method->callback_ctrl(b, cmd, fp);
613
614 if (b->callback != NULL || b->callback_ex != NULL) {
615 ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN,
616 (void *)&fp, 0, cmd, 0, ret, NULL);
617 }
618
619 return (ret);
620}
621LCRYPTO_ALIAS(BIO_callback_ctrl);
622
623/* It is unfortunate to duplicate in functions what the BIO_(w)pending macros
624 * do; but those macros have inappropriate return type, and for interfacing
625 * from other programming languages, C macros aren't much of a help anyway. */
626size_t
627BIO_ctrl_pending(BIO *bio)
628{
629 return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
630}
631LCRYPTO_ALIAS(BIO_ctrl_pending);
632
633size_t
634BIO_ctrl_wpending(BIO *bio)
635{
636 return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
637}
638LCRYPTO_ALIAS(BIO_ctrl_wpending);
639
640
641/*
642 * Append "bio" to the end of the chain containing "b":
643 * Two chains "b -> lb" and "oldhead -> bio"
644 * become two chains "b -> lb -> bio" and "oldhead".
645 */
646BIO *
647BIO_push(BIO *b, BIO *bio)
648{
649 BIO *lb;
650
651 if (b == NULL)
652 return (bio);
653 lb = b;
654 while (lb->next_bio != NULL)
655 lb = lb->next_bio;
656 lb->next_bio = bio;
657 if (bio != NULL) {
658 if (bio->prev_bio != NULL)
659 bio->prev_bio->next_bio = NULL;
660 bio->prev_bio = lb;
661 }
662 /* called to do internal processing */
663 BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb);
664 return (b);
665}
666LCRYPTO_ALIAS(BIO_push);
667
668/* Remove the first and return the rest */
669BIO *
670BIO_pop(BIO *b)
671{
672 BIO *ret;
673
674 if (b == NULL)
675 return (NULL);
676 ret = b->next_bio;
677
678 BIO_ctrl(b, BIO_CTRL_POP, 0, b);
679
680 if (b->prev_bio != NULL)
681 b->prev_bio->next_bio = b->next_bio;
682 if (b->next_bio != NULL)
683 b->next_bio->prev_bio = b->prev_bio;
684
685 b->next_bio = NULL;
686 b->prev_bio = NULL;
687 return (ret);
688}
689LCRYPTO_ALIAS(BIO_pop);
690
691BIO *
692BIO_get_retry_BIO(BIO *bio, int *reason)
693{
694 BIO *b, *last;
695
696 b = last = bio;
697 for (;;) {
698 if (!BIO_should_retry(b))
699 break;
700 last = b;
701 b = b->next_bio;
702 if (b == NULL)
703 break;
704 }
705 if (reason != NULL)
706 *reason = last->retry_reason;
707 return (last);
708}
709LCRYPTO_ALIAS(BIO_get_retry_BIO);
710
711int
712BIO_get_retry_reason(BIO *bio)
713{
714 return bio->retry_reason;
715}
716LCRYPTO_ALIAS(BIO_get_retry_reason);
717
718void
719BIO_set_retry_reason(BIO *bio, int reason)
720{
721 bio->retry_reason = reason;
722}
723LCRYPTO_ALIAS(BIO_set_retry_reason);
724
725BIO *
726BIO_find_type(BIO *bio, int type)
727{
728 int mt, mask;
729
730 if (!bio)
731 return NULL;
732 mask = type & 0xff;
733 do {
734 if (bio->method != NULL) {
735 mt = bio->method->type;
736 if (!mask) {
737 if (mt & type)
738 return (bio);
739 } else if (mt == type)
740 return (bio);
741 }
742 bio = bio->next_bio;
743 } while (bio != NULL);
744 return (NULL);
745}
746LCRYPTO_ALIAS(BIO_find_type);
747
748BIO *
749BIO_next(BIO *b)
750{
751 if (!b)
752 return NULL;
753 return b->next_bio;
754}
755LCRYPTO_ALIAS(BIO_next);
756
757/*
758 * Two chains "bio -> oldtail" and "oldhead -> next" become
759 * three chains "oldtail", "bio -> next", and "oldhead".
760 */
761void
762BIO_set_next(BIO *bio, BIO *next)
763{
764 /* Cut off the tail of the chain containing bio after bio. */
765 if (bio->next_bio != NULL)
766 bio->next_bio->prev_bio = NULL;
767
768 /* Cut off the head of the chain containing next before next. */
769 if (next != NULL && next->prev_bio != NULL)
770 next->prev_bio->next_bio = NULL;
771
772 /* Append the chain starting at next to the chain ending at bio. */
773 bio->next_bio = next;
774 if (next != NULL)
775 next->prev_bio = bio;
776}
777LCRYPTO_ALIAS(BIO_set_next);
778
779void
780BIO_free_all(BIO *bio)
781{
782 BIO *b;
783 int ref;
784
785 while (bio != NULL) {
786 b = bio;
787 ref = b->references;
788 bio = bio->next_bio;
789 BIO_free(b);
790 /* Since ref count > 1, don't free anyone else. */
791 if (ref > 1)
792 break;
793 }
794}
795LCRYPTO_ALIAS(BIO_free_all);
796
797BIO *
798BIO_dup_chain(BIO *in)
799{
800 BIO *new_chain = NULL, *new_bio = NULL, *tail = NULL;
801 BIO *bio;
802
803 for (bio = in; bio != NULL; bio = bio->next_bio) {
804 if ((new_bio = BIO_new(bio->method)) == NULL)
805 goto err;
806 new_bio->callback = bio->callback;
807 new_bio->callback_ex = bio->callback_ex;
808 new_bio->cb_arg = bio->cb_arg;
809 new_bio->init = bio->init;
810 new_bio->shutdown = bio->shutdown;
811 new_bio->flags = bio->flags;
812 new_bio->num = bio->num;
813
814 if (!BIO_dup_state(bio, new_bio))
815 goto err;
816
817 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO,
818 &new_bio->ex_data, &bio->ex_data))
819 goto err;
820
821 if (BIO_push(tail, new_bio) == NULL)
822 goto err;
823
824 tail = new_bio;
825 if (new_chain == NULL)
826 new_chain = new_bio;
827 }
828
829 return new_chain;
830
831 err:
832 BIO_free(new_bio);
833 BIO_free_all(new_chain);
834
835 return NULL;
836}
837LCRYPTO_ALIAS(BIO_dup_chain);
838
839void
840BIO_copy_next_retry(BIO *b)
841{
842 BIO_set_flags(b, BIO_get_retry_flags(b->next_bio));
843 b->retry_reason = b->next_bio->retry_reason;
844}
845LCRYPTO_ALIAS(BIO_copy_next_retry);
846
847int
848BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
849 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
850{
851 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, argl, argp,
852 new_func, dup_func, free_func);
853}
854LCRYPTO_ALIAS(BIO_get_ex_new_index);
855
856int
857BIO_set_ex_data(BIO *bio, int idx, void *data)
858{
859 return (CRYPTO_set_ex_data(&(bio->ex_data), idx, data));
860}
861LCRYPTO_ALIAS(BIO_set_ex_data);
862
863void *
864BIO_get_ex_data(BIO *bio, int idx)
865{
866 return (CRYPTO_get_ex_data(&(bio->ex_data), idx));
867}
868LCRYPTO_ALIAS(BIO_get_ex_data);
869
870unsigned long
871BIO_number_read(BIO *bio)
872{
873 if (bio)
874 return bio->num_read;
875 return 0;
876}
877LCRYPTO_ALIAS(BIO_number_read);
878
879unsigned long
880BIO_number_written(BIO *bio)
881{
882 if (bio)
883 return bio->num_write;
884 return 0;
885}
886LCRYPTO_ALIAS(BIO_number_written);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-23 15:11:04 +0000