1 | /* |
2 | * Copyright 1995-2018 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 | #include <openssl/crypto.h> |
13 | #include "bio_local.h" |
14 | #include "internal/cryptlib.h" |
15 | |
16 | |
17 | /* |
18 | * Helper macro for the callback to determine whether an operator expects a |
19 | * len parameter or not |
20 | */ |
21 | #define HAS_LEN_OPER(o) ((o) == BIO_CB_READ || (o) == BIO_CB_WRITE || \ |
22 | (o) == BIO_CB_GETS) |
23 | |
24 | /* |
25 | * Helper function to work out whether to call the new style callback or the old |
26 | * one, and translate between the two. |
27 | * |
28 | * This has a long return type for consistency with the old callback. Similarly |
29 | * for the "long" used for "inret" |
30 | */ |
31 | static long bio_call_callback(BIO *b, int oper, const char *argp, size_t len, |
32 | int argi, long argl, long inret, size_t *processed) |
33 | { |
34 | long ret; |
35 | int bareoper; |
36 | |
37 | if (b->callback_ex != NULL) |
38 | return b->callback_ex(b, oper, argp, len, argi, argl, inret, processed); |
39 | |
40 | /* Strip off any BIO_CB_RETURN flag */ |
41 | bareoper = oper & ~BIO_CB_RETURN; |
42 | |
43 | /* |
44 | * We have an old style callback, so we will have to do nasty casts and |
45 | * check for overflows. |
46 | */ |
47 | if (HAS_LEN_OPER(bareoper)) { |
48 | /* In this case |len| is set, and should be used instead of |argi| */ |
49 | if (len > INT_MAX) |
50 | return -1; |
51 | |
52 | argi = (int)len; |
53 | } |
54 | |
55 | if (inret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) { |
56 | if (*processed > INT_MAX) |
57 | return -1; |
58 | inret = *processed; |
59 | } |
60 | |
61 | ret = b->callback(b, oper, argp, argi, argl, inret); |
62 | |
63 | if (ret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) { |
64 | *processed = (size_t)ret; |
65 | ret = 1; |
66 | } |
67 | |
68 | return ret; |
69 | } |
70 | |
71 | BIO *BIO_new(const BIO_METHOD *method) |
72 | { |
73 | BIO *bio = OPENSSL_zalloc(sizeof(*bio)); |
74 | |
75 | if (bio == NULL) { |
76 | BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); |
77 | return NULL; |
78 | } |
79 | |
80 | bio->method = method; |
81 | bio->shutdown = 1; |
82 | bio->references = 1; |
83 | |
84 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data)) |
85 | goto err; |
86 | |
87 | bio->lock = CRYPTO_THREAD_lock_new(); |
88 | if (bio->lock == NULL) { |
89 | BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); |
90 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); |
91 | goto err; |
92 | } |
93 | |
94 | if (method->create != NULL && !method->create(bio)) { |
95 | BIOerr(BIO_F_BIO_NEW, ERR_R_INIT_FAIL); |
96 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); |
97 | CRYPTO_THREAD_lock_free(bio->lock); |
98 | goto err; |
99 | } |
100 | if (method->create == NULL) |
101 | bio->init = 1; |
102 | |
103 | return bio; |
104 | |
105 | err: |
106 | OPENSSL_free(bio); |
107 | return NULL; |
108 | } |
109 | |
110 | int BIO_free(BIO *a) |
111 | { |
112 | int ret; |
113 | |
114 | if (a == NULL) |
115 | return 0; |
116 | |
117 | if (CRYPTO_DOWN_REF(&a->references, &ret, a->lock) <= 0) |
118 | return 0; |
119 | |
120 | REF_PRINT_COUNT("BIO" , a); |
121 | if (ret > 0) |
122 | return 1; |
123 | REF_ASSERT_ISNT(ret < 0); |
124 | |
125 | if (a->callback != NULL || a->callback_ex != NULL) { |
126 | ret = (int)bio_call_callback(a, BIO_CB_FREE, NULL, 0, 0, 0L, 1L, NULL); |
127 | if (ret <= 0) |
128 | return ret; |
129 | } |
130 | |
131 | if ((a->method != NULL) && (a->method->destroy != NULL)) |
132 | a->method->destroy(a); |
133 | |
134 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); |
135 | |
136 | CRYPTO_THREAD_lock_free(a->lock); |
137 | |
138 | OPENSSL_free(a); |
139 | |
140 | return 1; |
141 | } |
142 | |
143 | void BIO_set_data(BIO *a, void *ptr) |
144 | { |
145 | a->ptr = ptr; |
146 | } |
147 | |
148 | void *BIO_get_data(BIO *a) |
149 | { |
150 | return a->ptr; |
151 | } |
152 | |
153 | void BIO_set_init(BIO *a, int init) |
154 | { |
155 | a->init = init; |
156 | } |
157 | |
158 | int BIO_get_init(BIO *a) |
159 | { |
160 | return a->init; |
161 | } |
162 | |
163 | void BIO_set_shutdown(BIO *a, int shut) |
164 | { |
165 | a->shutdown = shut; |
166 | } |
167 | |
168 | int BIO_get_shutdown(BIO *a) |
169 | { |
170 | return a->shutdown; |
171 | } |
172 | |
173 | void BIO_vfree(BIO *a) |
174 | { |
175 | BIO_free(a); |
176 | } |
177 | |
178 | int BIO_up_ref(BIO *a) |
179 | { |
180 | int i; |
181 | |
182 | if (CRYPTO_UP_REF(&a->references, &i, a->lock) <= 0) |
183 | return 0; |
184 | |
185 | REF_PRINT_COUNT("BIO" , a); |
186 | REF_ASSERT_ISNT(i < 2); |
187 | return ((i > 1) ? 1 : 0); |
188 | } |
189 | |
190 | void BIO_clear_flags(BIO *b, int flags) |
191 | { |
192 | b->flags &= ~flags; |
193 | } |
194 | |
195 | int BIO_test_flags(const BIO *b, int flags) |
196 | { |
197 | return (b->flags & flags); |
198 | } |
199 | |
200 | void BIO_set_flags(BIO *b, int flags) |
201 | { |
202 | b->flags |= flags; |
203 | } |
204 | |
205 | BIO_callback_fn BIO_get_callback(const BIO *b) |
206 | { |
207 | return b->callback; |
208 | } |
209 | |
210 | void BIO_set_callback(BIO *b, BIO_callback_fn cb) |
211 | { |
212 | b->callback = cb; |
213 | } |
214 | |
215 | BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b) |
216 | { |
217 | return b->callback_ex; |
218 | } |
219 | |
220 | void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex cb) |
221 | { |
222 | b->callback_ex = cb; |
223 | } |
224 | |
225 | void BIO_set_callback_arg(BIO *b, char *arg) |
226 | { |
227 | b->cb_arg = arg; |
228 | } |
229 | |
230 | char *BIO_get_callback_arg(const BIO *b) |
231 | { |
232 | return b->cb_arg; |
233 | } |
234 | |
235 | const char *BIO_method_name(const BIO *b) |
236 | { |
237 | return b->method->name; |
238 | } |
239 | |
240 | int BIO_method_type(const BIO *b) |
241 | { |
242 | return b->method->type; |
243 | } |
244 | |
245 | /* |
246 | * This is essentially the same as BIO_read_ex() except that it allows |
247 | * 0 or a negative value to indicate failure (retryable or not) in the return. |
248 | * This is for compatibility with the old style BIO_read(), where existing code |
249 | * may make assumptions about the return value that it might get. |
250 | */ |
251 | static int bio_read_intern(BIO *b, void *data, size_t dlen, size_t *readbytes) |
252 | { |
253 | int ret; |
254 | |
255 | if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) { |
256 | BIOerr(BIO_F_BIO_READ_INTERN, BIO_R_UNSUPPORTED_METHOD); |
257 | return -2; |
258 | } |
259 | |
260 | if ((b->callback != NULL || b->callback_ex != NULL) && |
261 | ((ret = (int)bio_call_callback(b, BIO_CB_READ, data, dlen, 0, 0L, 1L, |
262 | NULL)) <= 0)) |
263 | return ret; |
264 | |
265 | if (!b->init) { |
266 | BIOerr(BIO_F_BIO_READ_INTERN, BIO_R_UNINITIALIZED); |
267 | return -2; |
268 | } |
269 | |
270 | ret = b->method->bread(b, data, dlen, readbytes); |
271 | |
272 | if (ret > 0) |
273 | b->num_read += (uint64_t)*readbytes; |
274 | |
275 | if (b->callback != NULL || b->callback_ex != NULL) |
276 | ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN, data, |
277 | dlen, 0, 0L, ret, readbytes); |
278 | |
279 | /* Shouldn't happen */ |
280 | if (ret > 0 && *readbytes > dlen) { |
281 | BIOerr(BIO_F_BIO_READ_INTERN, ERR_R_INTERNAL_ERROR); |
282 | return -1; |
283 | } |
284 | |
285 | return ret; |
286 | } |
287 | |
288 | int BIO_read(BIO *b, void *data, int dlen) |
289 | { |
290 | size_t readbytes; |
291 | int ret; |
292 | |
293 | if (dlen < 0) |
294 | return 0; |
295 | |
296 | ret = bio_read_intern(b, data, (size_t)dlen, &readbytes); |
297 | |
298 | if (ret > 0) { |
299 | /* *readbytes should always be <= dlen */ |
300 | ret = (int)readbytes; |
301 | } |
302 | |
303 | return ret; |
304 | } |
305 | |
306 | int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes) |
307 | { |
308 | int ret; |
309 | |
310 | ret = bio_read_intern(b, data, dlen, readbytes); |
311 | |
312 | if (ret > 0) |
313 | ret = 1; |
314 | else |
315 | ret = 0; |
316 | |
317 | return ret; |
318 | } |
319 | |
320 | static int bio_write_intern(BIO *b, const void *data, size_t dlen, |
321 | size_t *written) |
322 | { |
323 | int ret; |
324 | |
325 | if (b == NULL) |
326 | return 0; |
327 | |
328 | if ((b->method == NULL) || (b->method->bwrite == NULL)) { |
329 | BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNSUPPORTED_METHOD); |
330 | return -2; |
331 | } |
332 | |
333 | if ((b->callback != NULL || b->callback_ex != NULL) && |
334 | ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, dlen, 0, 0L, 1L, |
335 | NULL)) <= 0)) |
336 | return ret; |
337 | |
338 | if (!b->init) { |
339 | BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNINITIALIZED); |
340 | return -2; |
341 | } |
342 | |
343 | ret = b->method->bwrite(b, data, dlen, written); |
344 | |
345 | if (ret > 0) |
346 | b->num_write += (uint64_t)*written; |
347 | |
348 | if (b->callback != NULL || b->callback_ex != NULL) |
349 | ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data, |
350 | dlen, 0, 0L, ret, written); |
351 | |
352 | return ret; |
353 | } |
354 | |
355 | int BIO_write(BIO *b, const void *data, int dlen) |
356 | { |
357 | size_t written; |
358 | int ret; |
359 | |
360 | if (dlen < 0) |
361 | return 0; |
362 | |
363 | ret = bio_write_intern(b, data, (size_t)dlen, &written); |
364 | |
365 | if (ret > 0) { |
366 | /* *written should always be <= dlen */ |
367 | ret = (int)written; |
368 | } |
369 | |
370 | return ret; |
371 | } |
372 | |
373 | int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written) |
374 | { |
375 | int ret; |
376 | |
377 | ret = bio_write_intern(b, data, dlen, written); |
378 | |
379 | if (ret > 0) |
380 | ret = 1; |
381 | else |
382 | ret = 0; |
383 | |
384 | return ret; |
385 | } |
386 | |
387 | int BIO_puts(BIO *b, const char *buf) |
388 | { |
389 | int ret; |
390 | size_t written = 0; |
391 | |
392 | if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) { |
393 | BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD); |
394 | return -2; |
395 | } |
396 | |
397 | if (b->callback != NULL || b->callback_ex != NULL) { |
398 | ret = (int)bio_call_callback(b, BIO_CB_PUTS, buf, 0, 0, 0L, 1L, NULL); |
399 | if (ret <= 0) |
400 | return ret; |
401 | } |
402 | |
403 | if (!b->init) { |
404 | BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED); |
405 | return -2; |
406 | } |
407 | |
408 | ret = b->method->bputs(b, buf); |
409 | |
410 | if (ret > 0) { |
411 | b->num_write += (uint64_t)ret; |
412 | written = ret; |
413 | ret = 1; |
414 | } |
415 | |
416 | if (b->callback != NULL || b->callback_ex != NULL) |
417 | ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN, buf, 0, 0, |
418 | 0L, ret, &written); |
419 | |
420 | if (ret > 0) { |
421 | if (written > INT_MAX) { |
422 | BIOerr(BIO_F_BIO_PUTS, BIO_R_LENGTH_TOO_LONG); |
423 | ret = -1; |
424 | } else { |
425 | ret = (int)written; |
426 | } |
427 | } |
428 | |
429 | return ret; |
430 | } |
431 | |
432 | int BIO_gets(BIO *b, char *buf, int size) |
433 | { |
434 | int ret; |
435 | size_t readbytes = 0; |
436 | |
437 | if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) { |
438 | BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD); |
439 | return -2; |
440 | } |
441 | |
442 | if (size < 0) { |
443 | BIOerr(BIO_F_BIO_GETS, BIO_R_INVALID_ARGUMENT); |
444 | return 0; |
445 | } |
446 | |
447 | if (b->callback != NULL || b->callback_ex != NULL) { |
448 | ret = (int)bio_call_callback(b, BIO_CB_GETS, buf, size, 0, 0L, 1, NULL); |
449 | if (ret <= 0) |
450 | return ret; |
451 | } |
452 | |
453 | if (!b->init) { |
454 | BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED); |
455 | return -2; |
456 | } |
457 | |
458 | ret = b->method->bgets(b, buf, size); |
459 | |
460 | if (ret > 0) { |
461 | readbytes = ret; |
462 | ret = 1; |
463 | } |
464 | |
465 | if (b->callback != NULL || b->callback_ex != NULL) |
466 | ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, buf, size, |
467 | 0, 0L, ret, &readbytes); |
468 | |
469 | if (ret > 0) { |
470 | /* Shouldn't happen */ |
471 | if (readbytes > (size_t)size) |
472 | ret = -1; |
473 | else |
474 | ret = (int)readbytes; |
475 | } |
476 | |
477 | return ret; |
478 | } |
479 | |
480 | int BIO_indent(BIO *b, int indent, int max) |
481 | { |
482 | if (indent < 0) |
483 | indent = 0; |
484 | if (indent > max) |
485 | indent = max; |
486 | while (indent--) |
487 | if (BIO_puts(b, " " ) != 1) |
488 | return 0; |
489 | return 1; |
490 | } |
491 | |
492 | long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) |
493 | { |
494 | int i; |
495 | |
496 | i = iarg; |
497 | return BIO_ctrl(b, cmd, larg, (char *)&i); |
498 | } |
499 | |
500 | void *BIO_ptr_ctrl(BIO *b, int cmd, long larg) |
501 | { |
502 | void *p = NULL; |
503 | |
504 | if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0) |
505 | return NULL; |
506 | else |
507 | return p; |
508 | } |
509 | |
510 | long BIO_ctrl(BIO *b, int cmd, long larg, void *parg) |
511 | { |
512 | long ret; |
513 | |
514 | if (b == NULL) |
515 | return 0; |
516 | |
517 | if ((b->method == NULL) || (b->method->ctrl == NULL)) { |
518 | BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD); |
519 | return -2; |
520 | } |
521 | |
522 | if (b->callback != NULL || b->callback_ex != NULL) { |
523 | ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL); |
524 | if (ret <= 0) |
525 | return ret; |
526 | } |
527 | |
528 | ret = b->method->ctrl(b, cmd, larg, parg); |
529 | |
530 | if (b->callback != NULL || b->callback_ex != NULL) |
531 | ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd, |
532 | larg, ret, NULL); |
533 | |
534 | return ret; |
535 | } |
536 | |
537 | long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp) |
538 | { |
539 | long ret; |
540 | |
541 | if (b == NULL) |
542 | return 0; |
543 | |
544 | if ((b->method == NULL) || (b->method->callback_ctrl == NULL) |
545 | || (cmd != BIO_CTRL_SET_CALLBACK)) { |
546 | BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD); |
547 | return -2; |
548 | } |
549 | |
550 | if (b->callback != NULL || b->callback_ex != NULL) { |
551 | ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L, |
552 | NULL); |
553 | if (ret <= 0) |
554 | return ret; |
555 | } |
556 | |
557 | ret = b->method->callback_ctrl(b, cmd, fp); |
558 | |
559 | if (b->callback != NULL || b->callback_ex != NULL) |
560 | ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0, |
561 | cmd, 0, ret, NULL); |
562 | |
563 | return ret; |
564 | } |
565 | |
566 | /* |
567 | * It is unfortunate to duplicate in functions what the BIO_(w)pending macros |
568 | * do; but those macros have inappropriate return type, and for interfacing |
569 | * from other programming languages, C macros aren't much of a help anyway. |
570 | */ |
571 | size_t BIO_ctrl_pending(BIO *bio) |
572 | { |
573 | return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL); |
574 | } |
575 | |
576 | size_t BIO_ctrl_wpending(BIO *bio) |
577 | { |
578 | return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL); |
579 | } |
580 | |
581 | /* put the 'bio' on the end of b's list of operators */ |
582 | BIO *BIO_push(BIO *b, BIO *bio) |
583 | { |
584 | BIO *lb; |
585 | |
586 | if (b == NULL) |
587 | return bio; |
588 | lb = b; |
589 | while (lb->next_bio != NULL) |
590 | lb = lb->next_bio; |
591 | lb->next_bio = bio; |
592 | if (bio != NULL) |
593 | bio->prev_bio = lb; |
594 | /* called to do internal processing */ |
595 | BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb); |
596 | return b; |
597 | } |
598 | |
599 | /* Remove the first and return the rest */ |
600 | BIO *BIO_pop(BIO *b) |
601 | { |
602 | BIO *ret; |
603 | |
604 | if (b == NULL) |
605 | return NULL; |
606 | ret = b->next_bio; |
607 | |
608 | BIO_ctrl(b, BIO_CTRL_POP, 0, b); |
609 | |
610 | if (b->prev_bio != NULL) |
611 | b->prev_bio->next_bio = b->next_bio; |
612 | if (b->next_bio != NULL) |
613 | b->next_bio->prev_bio = b->prev_bio; |
614 | |
615 | b->next_bio = NULL; |
616 | b->prev_bio = NULL; |
617 | return ret; |
618 | } |
619 | |
620 | BIO *BIO_get_retry_BIO(BIO *bio, int *reason) |
621 | { |
622 | BIO *b, *last; |
623 | |
624 | b = last = bio; |
625 | for (;;) { |
626 | if (!BIO_should_retry(b)) |
627 | break; |
628 | last = b; |
629 | b = b->next_bio; |
630 | if (b == NULL) |
631 | break; |
632 | } |
633 | if (reason != NULL) |
634 | *reason = last->retry_reason; |
635 | return last; |
636 | } |
637 | |
638 | int BIO_get_retry_reason(BIO *bio) |
639 | { |
640 | return bio->retry_reason; |
641 | } |
642 | |
643 | void BIO_set_retry_reason(BIO *bio, int reason) |
644 | { |
645 | bio->retry_reason = reason; |
646 | } |
647 | |
648 | BIO *BIO_find_type(BIO *bio, int type) |
649 | { |
650 | int mt, mask; |
651 | |
652 | if (bio == NULL) |
653 | return NULL; |
654 | mask = type & 0xff; |
655 | do { |
656 | if (bio->method != NULL) { |
657 | mt = bio->method->type; |
658 | |
659 | if (!mask) { |
660 | if (mt & type) |
661 | return bio; |
662 | } else if (mt == type) |
663 | return bio; |
664 | } |
665 | bio = bio->next_bio; |
666 | } while (bio != NULL); |
667 | return NULL; |
668 | } |
669 | |
670 | BIO *BIO_next(BIO *b) |
671 | { |
672 | if (b == NULL) |
673 | return NULL; |
674 | return b->next_bio; |
675 | } |
676 | |
677 | void BIO_set_next(BIO *b, BIO *next) |
678 | { |
679 | b->next_bio = next; |
680 | } |
681 | |
682 | void BIO_free_all(BIO *bio) |
683 | { |
684 | BIO *b; |
685 | int ref; |
686 | |
687 | while (bio != NULL) { |
688 | b = bio; |
689 | ref = b->references; |
690 | bio = bio->next_bio; |
691 | BIO_free(b); |
692 | /* Since ref count > 1, don't free anyone else. */ |
693 | if (ref > 1) |
694 | break; |
695 | } |
696 | } |
697 | |
698 | BIO *BIO_dup_chain(BIO *in) |
699 | { |
700 | BIO *ret = NULL, *eoc = NULL, *bio, *new_bio; |
701 | |
702 | for (bio = in; bio != NULL; bio = bio->next_bio) { |
703 | if ((new_bio = BIO_new(bio->method)) == NULL) |
704 | goto err; |
705 | new_bio->callback = bio->callback; |
706 | new_bio->callback_ex = bio->callback_ex; |
707 | new_bio->cb_arg = bio->cb_arg; |
708 | new_bio->init = bio->init; |
709 | new_bio->shutdown = bio->shutdown; |
710 | new_bio->flags = bio->flags; |
711 | |
712 | /* This will let SSL_s_sock() work with stdin/stdout */ |
713 | new_bio->num = bio->num; |
714 | |
715 | if (!BIO_dup_state(bio, (char *)new_bio)) { |
716 | BIO_free(new_bio); |
717 | goto err; |
718 | } |
719 | |
720 | /* copy app data */ |
721 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data, |
722 | &bio->ex_data)) { |
723 | BIO_free(new_bio); |
724 | goto err; |
725 | } |
726 | |
727 | if (ret == NULL) { |
728 | eoc = new_bio; |
729 | ret = eoc; |
730 | } else { |
731 | BIO_push(eoc, new_bio); |
732 | eoc = new_bio; |
733 | } |
734 | } |
735 | return ret; |
736 | err: |
737 | BIO_free_all(ret); |
738 | |
739 | return NULL; |
740 | } |
741 | |
742 | void BIO_copy_next_retry(BIO *b) |
743 | { |
744 | BIO_set_flags(b, BIO_get_retry_flags(b->next_bio)); |
745 | b->retry_reason = b->next_bio->retry_reason; |
746 | } |
747 | |
748 | int BIO_set_ex_data(BIO *bio, int idx, void *data) |
749 | { |
750 | return CRYPTO_set_ex_data(&(bio->ex_data), idx, data); |
751 | } |
752 | |
753 | void *BIO_get_ex_data(BIO *bio, int idx) |
754 | { |
755 | return CRYPTO_get_ex_data(&(bio->ex_data), idx); |
756 | } |
757 | |
758 | uint64_t BIO_number_read(BIO *bio) |
759 | { |
760 | if (bio) |
761 | return bio->num_read; |
762 | return 0; |
763 | } |
764 | |
765 | uint64_t BIO_number_written(BIO *bio) |
766 | { |
767 | if (bio) |
768 | return bio->num_write; |
769 | return 0; |
770 | } |
771 | |
772 | void bio_free_ex_data(BIO *bio) |
773 | { |
774 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); |
775 | } |
776 | |
777 | void bio_cleanup(void) |
778 | { |
779 | #ifndef OPENSSL_NO_SOCK |
780 | bio_sock_cleanup_int(); |
781 | CRYPTO_THREAD_lock_free(bio_lookup_lock); |
782 | bio_lookup_lock = NULL; |
783 | #endif |
784 | CRYPTO_THREAD_lock_free(bio_type_lock); |
785 | bio_type_lock = NULL; |
786 | } |
787 | |