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d02b48c6 | 1 | /* crypto/bio/bio_lib.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
0f113f3e | 8 | * |
d02b48c6 RE |
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). | |
0f113f3e | 15 | * |
d02b48c6 RE |
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. | |
0f113f3e | 22 | * |
d02b48c6 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
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. | |
0f113f3e | 52 | * |
d02b48c6 RE |
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 <stdio.h> | |
60 | #include <errno.h> | |
ec577822 | 61 | #include <openssl/crypto.h> |
d02b48c6 | 62 | #include "cryptlib.h" |
ec577822 BM |
63 | #include <openssl/bio.h> |
64 | #include <openssl/stack.h> | |
58964a49 | 65 | |
6b691a5c | 66 | BIO *BIO_new(BIO_METHOD *method) |
0f113f3e MC |
67 | { |
68 | BIO *ret = NULL; | |
69 | ||
70 | ret = (BIO *)OPENSSL_malloc(sizeof(BIO)); | |
71 | if (ret == NULL) { | |
72 | BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); | |
73 | return (NULL); | |
74 | } | |
75 | if (!BIO_set(ret, method)) { | |
76 | OPENSSL_free(ret); | |
77 | ret = NULL; | |
78 | } | |
79 | return (ret); | |
80 | } | |
d02b48c6 | 81 | |
6b691a5c | 82 | int BIO_set(BIO *bio, BIO_METHOD *method) |
0f113f3e MC |
83 | { |
84 | bio->method = method; | |
85 | bio->callback = NULL; | |
86 | bio->cb_arg = NULL; | |
87 | bio->init = 0; | |
88 | bio->shutdown = 1; | |
89 | bio->flags = 0; | |
90 | bio->retry_reason = 0; | |
91 | bio->num = 0; | |
92 | bio->ptr = NULL; | |
93 | bio->prev_bio = NULL; | |
94 | bio->next_bio = NULL; | |
95 | bio->references = 1; | |
96 | bio->num_read = 0L; | |
97 | bio->num_write = 0L; | |
98 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); | |
99 | if (method->create != NULL) | |
100 | if (!method->create(bio)) { | |
101 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); | |
102 | return (0); | |
103 | } | |
104 | return (1); | |
105 | } | |
d02b48c6 | 106 | |
6b691a5c | 107 | int BIO_free(BIO *a) |
0f113f3e MC |
108 | { |
109 | int i; | |
d02b48c6 | 110 | |
0f113f3e MC |
111 | if (a == NULL) |
112 | return (0); | |
d02b48c6 | 113 | |
0f113f3e | 114 | i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_BIO); |
58964a49 | 115 | #ifdef REF_PRINT |
0f113f3e | 116 | REF_PRINT("BIO", a); |
58964a49 | 117 | #endif |
0f113f3e MC |
118 | if (i > 0) |
119 | return (1); | |
d02b48c6 | 120 | #ifdef REF_CHECK |
0f113f3e MC |
121 | if (i < 0) { |
122 | fprintf(stderr, "BIO_free, bad reference count\n"); | |
123 | abort(); | |
124 | } | |
d02b48c6 | 125 | #endif |
0f113f3e MC |
126 | if ((a->callback != NULL) && |
127 | ((i = (int)a->callback(a, BIO_CB_FREE, NULL, 0, 0L, 1L)) <= 0)) | |
128 | return (i); | |
d02b48c6 | 129 | |
0f113f3e | 130 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); |
58964a49 | 131 | |
0f113f3e MC |
132 | if ((a->method != NULL) && (a->method->destroy != NULL)) |
133 | a->method->destroy(a); | |
134 | OPENSSL_free(a); | |
135 | return (1); | |
136 | } | |
d02b48c6 | 137 | |
371acb22 | 138 | void BIO_vfree(BIO *a) |
0f113f3e MC |
139 | { |
140 | BIO_free(a); | |
141 | } | |
371acb22 | 142 | |
7806f3dd | 143 | void BIO_clear_flags(BIO *b, int flags) |
0f113f3e MC |
144 | { |
145 | b->flags &= ~flags; | |
146 | } | |
147 | ||
148 | int BIO_test_flags(const BIO *b, int flags) | |
149 | { | |
150 | return (b->flags & flags); | |
151 | } | |
152 | ||
153 | void BIO_set_flags(BIO *b, int flags) | |
154 | { | |
155 | b->flags |= flags; | |
156 | } | |
157 | ||
158 | long (*BIO_get_callback(const BIO *b)) (struct bio_st *, int, const char *, | |
159 | int, long, long) { | |
160 | return b->callback; | |
161 | } | |
162 | ||
163 | void BIO_set_callback(BIO *b, | |
164 | long (*cb) (struct bio_st *, int, const char *, int, | |
165 | long, long)) | |
166 | { | |
167 | b->callback = cb; | |
168 | } | |
7806f3dd NL |
169 | |
170 | void BIO_set_callback_arg(BIO *b, char *arg) | |
0f113f3e MC |
171 | { |
172 | b->cb_arg = arg; | |
173 | } | |
7806f3dd | 174 | |
0f113f3e MC |
175 | char *BIO_get_callback_arg(const BIO *b) |
176 | { | |
177 | return b->cb_arg; | |
178 | } | |
7806f3dd | 179 | |
0f113f3e MC |
180 | const char *BIO_method_name(const BIO *b) |
181 | { | |
182 | return b->method->name; | |
183 | } | |
7806f3dd NL |
184 | |
185 | int BIO_method_type(const BIO *b) | |
0f113f3e MC |
186 | { |
187 | return b->method->type; | |
188 | } | |
7806f3dd | 189 | |
61f5b6f3 | 190 | int BIO_read(BIO *b, void *out, int outl) |
0f113f3e MC |
191 | { |
192 | int i; | |
193 | long (*cb) (BIO *, int, const char *, int, long, long); | |
d02b48c6 | 194 | |
0f113f3e MC |
195 | if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) { |
196 | BIOerr(BIO_F_BIO_READ, BIO_R_UNSUPPORTED_METHOD); | |
197 | return (-2); | |
198 | } | |
d02b48c6 | 199 | |
0f113f3e MC |
200 | cb = b->callback; |
201 | if ((cb != NULL) && | |
202 | ((i = (int)cb(b, BIO_CB_READ, out, outl, 0L, 1L)) <= 0)) | |
203 | return (i); | |
d02b48c6 | 204 | |
0f113f3e MC |
205 | if (!b->init) { |
206 | BIOerr(BIO_F_BIO_READ, BIO_R_UNINITIALIZED); | |
207 | return (-2); | |
208 | } | |
d02b48c6 | 209 | |
0f113f3e | 210 | i = b->method->bread(b, out, outl); |
dfeab068 | 211 | |
0f113f3e MC |
212 | if (i > 0) |
213 | b->num_read += (unsigned long)i; | |
d02b48c6 | 214 | |
0f113f3e MC |
215 | if (cb != NULL) |
216 | i = (int)cb(b, BIO_CB_READ | BIO_CB_RETURN, out, outl, 0L, (long)i); | |
217 | return (i); | |
218 | } | |
d02b48c6 | 219 | |
6343829a | 220 | int BIO_write(BIO *b, const void *in, int inl) |
0f113f3e MC |
221 | { |
222 | int i; | |
223 | long (*cb) (BIO *, int, const char *, int, long, long); | |
58964a49 | 224 | |
0f113f3e MC |
225 | if (b == NULL) |
226 | return (0); | |
d02b48c6 | 227 | |
0f113f3e MC |
228 | cb = b->callback; |
229 | if ((b->method == NULL) || (b->method->bwrite == NULL)) { | |
230 | BIOerr(BIO_F_BIO_WRITE, BIO_R_UNSUPPORTED_METHOD); | |
231 | return (-2); | |
232 | } | |
d02b48c6 | 233 | |
0f113f3e MC |
234 | if ((cb != NULL) && |
235 | ((i = (int)cb(b, BIO_CB_WRITE, in, inl, 0L, 1L)) <= 0)) | |
236 | return (i); | |
d02b48c6 | 237 | |
0f113f3e MC |
238 | if (!b->init) { |
239 | BIOerr(BIO_F_BIO_WRITE, BIO_R_UNINITIALIZED); | |
240 | return (-2); | |
241 | } | |
d02b48c6 | 242 | |
0f113f3e | 243 | i = b->method->bwrite(b, in, inl); |
dfeab068 | 244 | |
0f113f3e MC |
245 | if (i > 0) |
246 | b->num_write += (unsigned long)i; | |
d02b48c6 | 247 | |
0f113f3e MC |
248 | if (cb != NULL) |
249 | i = (int)cb(b, BIO_CB_WRITE | BIO_CB_RETURN, in, inl, 0L, (long)i); | |
250 | return (i); | |
251 | } | |
d02b48c6 | 252 | |
6b691a5c | 253 | int BIO_puts(BIO *b, const char *in) |
0f113f3e MC |
254 | { |
255 | int i; | |
256 | long (*cb) (BIO *, int, const char *, int, long, long); | |
d02b48c6 | 257 | |
0f113f3e MC |
258 | if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) { |
259 | BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD); | |
260 | return (-2); | |
261 | } | |
d02b48c6 | 262 | |
0f113f3e | 263 | cb = b->callback; |
58964a49 | 264 | |
0f113f3e MC |
265 | if ((cb != NULL) && ((i = (int)cb(b, BIO_CB_PUTS, in, 0, 0L, 1L)) <= 0)) |
266 | return (i); | |
d02b48c6 | 267 | |
0f113f3e MC |
268 | if (!b->init) { |
269 | BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED); | |
270 | return (-2); | |
271 | } | |
d02b48c6 | 272 | |
0f113f3e | 273 | i = b->method->bputs(b, in); |
d02b48c6 | 274 | |
0f113f3e MC |
275 | if (i > 0) |
276 | b->num_write += (unsigned long)i; | |
7d95ff76 | 277 | |
0f113f3e MC |
278 | if (cb != NULL) |
279 | i = (int)cb(b, BIO_CB_PUTS | BIO_CB_RETURN, in, 0, 0L, (long)i); | |
280 | return (i); | |
281 | } | |
d02b48c6 | 282 | |
6b691a5c | 283 | int BIO_gets(BIO *b, char *in, int inl) |
0f113f3e MC |
284 | { |
285 | int i; | |
286 | long (*cb) (BIO *, int, const char *, int, long, long); | |
287 | ||
288 | if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) { | |
289 | BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD); | |
290 | return (-2); | |
291 | } | |
292 | ||
293 | cb = b->callback; | |
294 | ||
295 | if ((cb != NULL) && ((i = (int)cb(b, BIO_CB_GETS, in, inl, 0L, 1L)) <= 0)) | |
296 | return (i); | |
297 | ||
298 | if (!b->init) { | |
299 | BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED); | |
300 | return (-2); | |
301 | } | |
302 | ||
303 | i = b->method->bgets(b, in, inl); | |
304 | ||
305 | if (cb != NULL) | |
306 | i = (int)cb(b, BIO_CB_GETS | BIO_CB_RETURN, in, inl, 0L, (long)i); | |
307 | return (i); | |
308 | } | |
309 | ||
310 | int BIO_indent(BIO *b, int indent, int max) | |
311 | { | |
312 | if (indent < 0) | |
313 | indent = 0; | |
314 | if (indent > max) | |
315 | indent = max; | |
316 | while (indent--) | |
317 | if (BIO_puts(b, " ") != 1) | |
318 | return 0; | |
319 | return 1; | |
320 | } | |
54a656ef | 321 | |
6b691a5c | 322 | long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) |
0f113f3e MC |
323 | { |
324 | int i; | |
d02b48c6 | 325 | |
0f113f3e MC |
326 | i = iarg; |
327 | return (BIO_ctrl(b, cmd, larg, (char *)&i)); | |
328 | } | |
d02b48c6 | 329 | |
6b691a5c | 330 | char *BIO_ptr_ctrl(BIO *b, int cmd, long larg) |
0f113f3e MC |
331 | { |
332 | char *p = NULL; | |
58964a49 | 333 | |
0f113f3e MC |
334 | if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0) |
335 | return (NULL); | |
336 | else | |
337 | return (p); | |
338 | } | |
58964a49 | 339 | |
95d29597 | 340 | long BIO_ctrl(BIO *b, int cmd, long larg, void *parg) |
0f113f3e MC |
341 | { |
342 | long ret; | |
343 | long (*cb) (BIO *, int, const char *, int, long, long); | |
d02b48c6 | 344 | |
0f113f3e MC |
345 | if (b == NULL) |
346 | return (0); | |
d02b48c6 | 347 | |
0f113f3e MC |
348 | if ((b->method == NULL) || (b->method->ctrl == NULL)) { |
349 | BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD); | |
350 | return (-2); | |
351 | } | |
d02b48c6 | 352 | |
0f113f3e | 353 | cb = b->callback; |
58964a49 | 354 | |
0f113f3e MC |
355 | if ((cb != NULL) && |
356 | ((ret = cb(b, BIO_CB_CTRL, parg, cmd, larg, 1L)) <= 0)) | |
357 | return (ret); | |
d02b48c6 | 358 | |
0f113f3e | 359 | ret = b->method->ctrl(b, cmd, larg, parg); |
d02b48c6 | 360 | |
0f113f3e MC |
361 | if (cb != NULL) |
362 | ret = cb(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, cmd, larg, ret); | |
363 | return (ret); | |
364 | } | |
d02b48c6 | 365 | |
0f113f3e MC |
366 | long BIO_callback_ctrl(BIO *b, int cmd, |
367 | void (*fp) (struct bio_st *, int, const char *, int, | |
368 | long, long)) | |
369 | { | |
370 | long ret; | |
371 | long (*cb) (BIO *, int, const char *, int, long, long); | |
d3442bc7 | 372 | |
0f113f3e MC |
373 | if (b == NULL) |
374 | return (0); | |
d3442bc7 | 375 | |
0f113f3e MC |
376 | if ((b->method == NULL) || (b->method->callback_ctrl == NULL)) { |
377 | BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD); | |
378 | return (-2); | |
379 | } | |
d3442bc7 | 380 | |
0f113f3e | 381 | cb = b->callback; |
d3442bc7 | 382 | |
0f113f3e MC |
383 | if ((cb != NULL) && |
384 | ((ret = cb(b, BIO_CB_CTRL, (void *)&fp, cmd, 0, 1L)) <= 0)) | |
385 | return (ret); | |
d3442bc7 | 386 | |
0f113f3e | 387 | ret = b->method->callback_ctrl(b, cmd, fp); |
d3442bc7 | 388 | |
0f113f3e MC |
389 | if (cb != NULL) |
390 | ret = cb(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, cmd, 0, ret); | |
391 | return (ret); | |
392 | } | |
d3442bc7 | 393 | |
0f113f3e MC |
394 | /* |
395 | * It is unfortunate to duplicate in functions what the BIO_(w)pending macros | |
95d29597 | 396 | * do; but those macros have inappropriate return type, and for interfacing |
0f113f3e MC |
397 | * from other programming languages, C macros aren't much of a help anyway. |
398 | */ | |
95d29597 | 399 | size_t BIO_ctrl_pending(BIO *bio) |
0f113f3e MC |
400 | { |
401 | return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL); | |
402 | } | |
95d29597 BM |
403 | |
404 | size_t BIO_ctrl_wpending(BIO *bio) | |
0f113f3e MC |
405 | { |
406 | return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL); | |
407 | } | |
95d29597 | 408 | |
d02b48c6 | 409 | /* put the 'bio' on the end of b's list of operators */ |
6b691a5c | 410 | BIO *BIO_push(BIO *b, BIO *bio) |
0f113f3e MC |
411 | { |
412 | BIO *lb; | |
413 | ||
414 | if (b == NULL) | |
415 | return (bio); | |
416 | lb = b; | |
417 | while (lb->next_bio != NULL) | |
418 | lb = lb->next_bio; | |
419 | lb->next_bio = bio; | |
420 | if (bio != NULL) | |
421 | bio->prev_bio = lb; | |
422 | /* called to do internal processing */ | |
423 | BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb); | |
424 | return (b); | |
425 | } | |
d02b48c6 RE |
426 | |
427 | /* Remove the first and return the rest */ | |
6b691a5c | 428 | BIO *BIO_pop(BIO *b) |
0f113f3e MC |
429 | { |
430 | BIO *ret; | |
d02b48c6 | 431 | |
0f113f3e MC |
432 | if (b == NULL) |
433 | return (NULL); | |
434 | ret = b->next_bio; | |
d02b48c6 | 435 | |
0f113f3e | 436 | BIO_ctrl(b, BIO_CTRL_POP, 0, b); |
5d780bab | 437 | |
0f113f3e MC |
438 | if (b->prev_bio != NULL) |
439 | b->prev_bio->next_bio = b->next_bio; | |
440 | if (b->next_bio != NULL) | |
441 | b->next_bio->prev_bio = b->prev_bio; | |
d02b48c6 | 442 | |
0f113f3e MC |
443 | b->next_bio = NULL; |
444 | b->prev_bio = NULL; | |
445 | return (ret); | |
446 | } | |
d02b48c6 | 447 | |
6b691a5c | 448 | BIO *BIO_get_retry_BIO(BIO *bio, int *reason) |
0f113f3e MC |
449 | { |
450 | BIO *b, *last; | |
451 | ||
452 | b = last = bio; | |
453 | for (;;) { | |
454 | if (!BIO_should_retry(b)) | |
455 | break; | |
456 | last = b; | |
457 | b = b->next_bio; | |
458 | if (b == NULL) | |
459 | break; | |
460 | } | |
461 | if (reason != NULL) | |
462 | *reason = last->retry_reason; | |
463 | return (last); | |
464 | } | |
d02b48c6 | 465 | |
6b691a5c | 466 | int BIO_get_retry_reason(BIO *bio) |
0f113f3e MC |
467 | { |
468 | return (bio->retry_reason); | |
469 | } | |
d02b48c6 | 470 | |
6b691a5c | 471 | BIO *BIO_find_type(BIO *bio, int type) |
0f113f3e MC |
472 | { |
473 | int mt, mask; | |
474 | ||
475 | if (!bio) | |
476 | return NULL; | |
477 | mask = type & 0xff; | |
478 | do { | |
479 | if (bio->method != NULL) { | |
480 | mt = bio->method->type; | |
481 | ||
482 | if (!mask) { | |
483 | if (mt & type) | |
484 | return (bio); | |
485 | } else if (mt == type) | |
486 | return (bio); | |
487 | } | |
488 | bio = bio->next_bio; | |
489 | } while (bio != NULL); | |
490 | return (NULL); | |
491 | } | |
d02b48c6 | 492 | |
cfd3bb17 | 493 | BIO *BIO_next(BIO *b) |
0f113f3e MC |
494 | { |
495 | if (!b) | |
496 | return NULL; | |
497 | return b->next_bio; | |
498 | } | |
cfd3bb17 | 499 | |
6b691a5c | 500 | void BIO_free_all(BIO *bio) |
0f113f3e MC |
501 | { |
502 | BIO *b; | |
503 | int ref; | |
504 | ||
505 | while (bio != NULL) { | |
506 | b = bio; | |
507 | ref = b->references; | |
508 | bio = bio->next_bio; | |
509 | BIO_free(b); | |
510 | /* Since ref count > 1, don't free anyone else. */ | |
511 | if (ref > 1) | |
512 | break; | |
513 | } | |
514 | } | |
d02b48c6 | 515 | |
6b691a5c | 516 | BIO *BIO_dup_chain(BIO *in) |
0f113f3e MC |
517 | { |
518 | BIO *ret = NULL, *eoc = NULL, *bio, *new_bio; | |
519 | ||
520 | for (bio = in; bio != NULL; bio = bio->next_bio) { | |
521 | if ((new_bio = BIO_new(bio->method)) == NULL) | |
522 | goto err; | |
523 | new_bio->callback = bio->callback; | |
524 | new_bio->cb_arg = bio->cb_arg; | |
525 | new_bio->init = bio->init; | |
526 | new_bio->shutdown = bio->shutdown; | |
527 | new_bio->flags = bio->flags; | |
528 | ||
529 | /* This will let SSL_s_sock() work with stdin/stdout */ | |
530 | new_bio->num = bio->num; | |
531 | ||
532 | if (!BIO_dup_state(bio, (char *)new_bio)) { | |
533 | BIO_free(new_bio); | |
534 | goto err; | |
535 | } | |
536 | ||
537 | /* copy app data */ | |
538 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data, | |
539 | &bio->ex_data)) | |
540 | goto err; | |
541 | ||
542 | if (ret == NULL) { | |
543 | eoc = new_bio; | |
544 | ret = eoc; | |
545 | } else { | |
546 | BIO_push(eoc, new_bio); | |
547 | eoc = new_bio; | |
548 | } | |
549 | } | |
550 | return (ret); | |
551 | err: | |
552 | if (ret != NULL) | |
553 | BIO_free(ret); | |
554 | return (NULL); | |
555 | } | |
d02b48c6 | 556 | |
6b691a5c | 557 | void BIO_copy_next_retry(BIO *b) |
0f113f3e MC |
558 | { |
559 | BIO_set_flags(b, BIO_get_retry_flags(b->next_bio)); | |
560 | b->retry_reason = b->next_bio->retry_reason; | |
561 | } | |
d02b48c6 | 562 | |
dd9d233e | 563 | int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, |
0f113f3e MC |
564 | CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) |
565 | { | |
566 | return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, argl, argp, | |
567 | new_func, dup_func, free_func); | |
568 | } | |
58964a49 | 569 | |
dd9d233e | 570 | int BIO_set_ex_data(BIO *bio, int idx, void *data) |
0f113f3e MC |
571 | { |
572 | return (CRYPTO_set_ex_data(&(bio->ex_data), idx, data)); | |
573 | } | |
58964a49 | 574 | |
dd9d233e | 575 | void *BIO_get_ex_data(BIO *bio, int idx) |
0f113f3e MC |
576 | { |
577 | return (CRYPTO_get_ex_data(&(bio->ex_data), idx)); | |
578 | } | |
58964a49 | 579 | |
c3ed3b6e DSH |
580 | unsigned long BIO_number_read(BIO *bio) |
581 | { | |
0f113f3e MC |
582 | if (bio) |
583 | return bio->num_read; | |
584 | return 0; | |
c3ed3b6e DSH |
585 | } |
586 | ||
587 | unsigned long BIO_number_written(BIO *bio) | |
588 | { | |
0f113f3e MC |
589 | if (bio) |
590 | return bio->num_write; | |
591 | return 0; | |
c3ed3b6e | 592 | } |
371acb22 BL |
593 | |
594 | IMPLEMENT_STACK_OF(BIO) |