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b1322259 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
d02b48c6 | 3 | * |
b1322259 RS |
4 | * Licensed under the OpenSSL license (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 | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <errno.h> | |
ec577822 | 12 | #include <openssl/crypto.h> |
a146ae55 | 13 | #include "bio_lcl.h" |
b39fc560 | 14 | #include "internal/cryptlib.h" |
58964a49 | 15 | |
98e553d2 MC |
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 | ||
41 | /* Strip off any BIO_CB_RETURN flag */ | |
42 | bareoper = oper & ~BIO_CB_RETURN; | |
43 | ||
44 | /* | |
45 | * We have an old style callback, so we will have to do nasty casts and | |
46 | * check for overflows. | |
47 | */ | |
48 | if (HAS_LEN_OPER(bareoper)) { | |
49 | /* In this case |len| is set, and should be used instead of |argi| */ | |
50 | if (len > INT_MAX) | |
51 | return -1; | |
52 | ||
53 | argi = (int)len; | |
54 | ||
55 | if (inret && (oper & BIO_CB_RETURN)) { | |
56 | if (*processed > INT_MAX) | |
57 | return -1; | |
58 | inret = *processed; | |
59 | } | |
60 | } | |
61 | ||
62 | ret = b->callback(b, oper, argp, argi, argl, inret); | |
63 | ||
64 | if (ret > LONG_MAX || ret < LONG_MIN) | |
65 | return -1; | |
66 | ||
67 | if (ret >= 0 && (HAS_LEN_OPER(bareoper) || bareoper == BIO_CB_PUTS)) { | |
68 | *processed = (size_t)ret; | |
69 | ret = 1; | |
70 | } | |
71 | ||
72 | return ret; | |
73 | } | |
74 | ||
04f6b0fd | 75 | BIO *BIO_new(const BIO_METHOD *method) |
0f113f3e | 76 | { |
9d7bfb14 | 77 | BIO *bio = OPENSSL_zalloc(sizeof(*bio)); |
0f113f3e | 78 | |
9d7bfb14 | 79 | if (bio == NULL) { |
0f113f3e MC |
80 | BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); |
81 | return (NULL); | |
82 | } | |
d02b48c6 | 83 | |
0f113f3e | 84 | bio->method = method; |
0f113f3e | 85 | bio->shutdown = 1; |
0f113f3e | 86 | bio->references = 1; |
9d7bfb14 | 87 | |
25a807bc | 88 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data)) |
9d7bfb14 | 89 | goto err; |
fb46be03 AG |
90 | |
91 | bio->lock = CRYPTO_THREAD_lock_new(); | |
92 | if (bio->lock == NULL) { | |
9d7bfb14 | 93 | BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); |
fb46be03 | 94 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); |
9d7bfb14 | 95 | goto err; |
fb46be03 AG |
96 | } |
97 | ||
9d7bfb14 F |
98 | if (method->create != NULL && !method->create(bio)) { |
99 | BIOerr(BIO_F_BIO_NEW, ERR_R_INIT_FAIL); | |
100 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); | |
101 | CRYPTO_THREAD_lock_free(bio->lock); | |
102 | goto err; | |
fb46be03 AG |
103 | } |
104 | ||
9d7bfb14 F |
105 | return bio; |
106 | ||
107 | err: | |
108 | OPENSSL_free(bio); | |
109 | return NULL; | |
0f113f3e | 110 | } |
d02b48c6 | 111 | |
6b691a5c | 112 | int BIO_free(BIO *a) |
0f113f3e | 113 | { |
98e553d2 | 114 | int ret; |
d02b48c6 | 115 | |
0f113f3e | 116 | if (a == NULL) |
fb46be03 AG |
117 | return 0; |
118 | ||
98e553d2 | 119 | if (CRYPTO_atomic_add(&a->references, -1, &ret, a->lock) <= 0) |
fb46be03 | 120 | return 0; |
d02b48c6 | 121 | |
f3f1cf84 | 122 | REF_PRINT_COUNT("BIO", a); |
98e553d2 | 123 | if (ret > 0) |
fb46be03 | 124 | return 1; |
98e553d2 MC |
125 | REF_ASSERT_ISNT(ret < 0); |
126 | ||
127 | if (a->callback != NULL || a->callback_ex != NULL) { | |
128 | ret = (int)bio_call_callback(a, BIO_CB_FREE, NULL, 0, 0, 0L, 1L, NULL); | |
129 | if (ret <= 0) | |
130 | return ret; | |
131 | } | |
d02b48c6 | 132 | |
a14a740d F |
133 | if ((a->method != NULL) && (a->method->destroy != NULL)) |
134 | a->method->destroy(a); | |
135 | ||
0f113f3e | 136 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); |
58964a49 | 137 | |
fb46be03 AG |
138 | CRYPTO_THREAD_lock_free(a->lock); |
139 | ||
0f113f3e | 140 | OPENSSL_free(a); |
fb46be03 AG |
141 | |
142 | return 1; | |
0f113f3e | 143 | } |
d02b48c6 | 144 | |
a146ae55 MC |
145 | void BIO_set_data(BIO *a, void *ptr) |
146 | { | |
147 | a->ptr = ptr; | |
148 | } | |
149 | ||
150 | void *BIO_get_data(BIO *a) | |
151 | { | |
152 | return a->ptr; | |
153 | } | |
154 | ||
155 | void BIO_set_init(BIO *a, int init) | |
156 | { | |
157 | a->init = init; | |
158 | } | |
159 | ||
160 | int BIO_get_init(BIO *a) | |
161 | { | |
162 | return a->init; | |
163 | } | |
164 | ||
165 | void BIO_set_shutdown(BIO *a, int shut) | |
166 | { | |
167 | a->shutdown = shut; | |
168 | } | |
169 | ||
170 | int BIO_get_shutdown(BIO *a) | |
171 | { | |
172 | return a->shutdown; | |
173 | } | |
174 | ||
371acb22 | 175 | void BIO_vfree(BIO *a) |
0f113f3e MC |
176 | { |
177 | BIO_free(a); | |
178 | } | |
371acb22 | 179 | |
fb46be03 AG |
180 | int BIO_up_ref(BIO *a) |
181 | { | |
182 | int i; | |
183 | ||
184 | if (CRYPTO_atomic_add(&a->references, 1, &i, a->lock) <= 0) | |
185 | return 0; | |
186 | ||
187 | REF_PRINT_COUNT("BIO", a); | |
188 | REF_ASSERT_ISNT(i < 2); | |
189 | return ((i > 1) ? 1 : 0); | |
190 | } | |
191 | ||
7806f3dd | 192 | void BIO_clear_flags(BIO *b, int flags) |
0f113f3e MC |
193 | { |
194 | b->flags &= ~flags; | |
195 | } | |
196 | ||
197 | int BIO_test_flags(const BIO *b, int flags) | |
198 | { | |
199 | return (b->flags & flags); | |
200 | } | |
201 | ||
202 | void BIO_set_flags(BIO *b, int flags) | |
203 | { | |
204 | b->flags |= flags; | |
205 | } | |
206 | ||
d07aee2c MC |
207 | BIO_callback_fn BIO_get_callback(const BIO *b) |
208 | { | |
0f113f3e MC |
209 | return b->callback; |
210 | } | |
211 | ||
d07aee2c | 212 | void BIO_set_callback(BIO *b, BIO_callback_fn cb) |
0f113f3e MC |
213 | { |
214 | b->callback = cb; | |
215 | } | |
7806f3dd | 216 | |
d07aee2c MC |
217 | BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b) |
218 | { | |
219 | return b->callback_ex; | |
220 | } | |
221 | ||
222 | void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex cb) | |
223 | { | |
224 | b->callback_ex = cb; | |
225 | } | |
226 | ||
7806f3dd | 227 | void BIO_set_callback_arg(BIO *b, char *arg) |
0f113f3e MC |
228 | { |
229 | b->cb_arg = arg; | |
230 | } | |
7806f3dd | 231 | |
0f113f3e MC |
232 | char *BIO_get_callback_arg(const BIO *b) |
233 | { | |
234 | return b->cb_arg; | |
235 | } | |
7806f3dd | 236 | |
0f113f3e MC |
237 | const char *BIO_method_name(const BIO *b) |
238 | { | |
239 | return b->method->name; | |
240 | } | |
7806f3dd NL |
241 | |
242 | int BIO_method_type(const BIO *b) | |
0f113f3e MC |
243 | { |
244 | return b->method->type; | |
245 | } | |
7806f3dd | 246 | |
bb5310be MC |
247 | /* |
248 | * This is essentially the same as BIO_read_ex() except that it allows | |
249 | * 0 or a -ve value to indicate failure (retryable or not) in the return. This | |
250 | * is for compatibility with the old style BIO_read(), where existing code may | |
251 | * make assumptions about the return value that it might get. | |
252 | */ | |
42c60460 | 253 | static int bio_read_intern(BIO *b, void *data, size_t datal, size_t *read) |
d07aee2c MC |
254 | { |
255 | int ret; | |
d02b48c6 | 256 | |
0f113f3e | 257 | if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) { |
d07aee2c | 258 | BIOerr(BIO_F_BIO_READ_EX, BIO_R_UNSUPPORTED_METHOD); |
bb5310be | 259 | return -2; |
0f113f3e | 260 | } |
d02b48c6 | 261 | |
d07aee2c | 262 | if ((b->callback != NULL || b->callback_ex != NULL) && |
42c60460 | 263 | ((ret = (int)bio_call_callback(b, BIO_CB_READ, data, datal, 0, 0L, 1L, |
98e553d2 | 264 | read)) <= 0)) |
d07aee2c | 265 | return ret; |
d02b48c6 | 266 | |
0f113f3e | 267 | if (!b->init) { |
d07aee2c MC |
268 | BIOerr(BIO_F_BIO_READ_EX, BIO_R_UNINITIALIZED); |
269 | return -2; | |
0f113f3e | 270 | } |
d02b48c6 | 271 | |
42c60460 | 272 | ret = b->method->bread(b, data, datal, read); |
dfeab068 | 273 | |
d07aee2c MC |
274 | if (ret > 0) |
275 | b->num_read += (uint64_t)*read; | |
276 | ||
277 | if (b->callback != NULL || b->callback_ex != NULL) | |
42c60460 MC |
278 | ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN, data, |
279 | datal, 0, 0L, ret, read); | |
d02b48c6 | 280 | |
fbba62f6 MC |
281 | /* Shouldn't happen */ |
282 | if (ret > 0 && *read > datal) | |
283 | return -1; | |
284 | ||
d07aee2c | 285 | return ret; |
0f113f3e | 286 | } |
d02b48c6 | 287 | |
42c60460 | 288 | int BIO_read(BIO *b, void *data, int datal) |
0f113f3e | 289 | { |
bb5310be | 290 | size_t read; |
3befffa3 MC |
291 | int ret; |
292 | ||
42c60460 | 293 | if (datal < 0) |
3befffa3 MC |
294 | return 0; |
295 | ||
42c60460 | 296 | ret = bio_read_intern(b, data, (size_t)datal, &read); |
3befffa3 MC |
297 | |
298 | if (ret > 0) { | |
bb5310be MC |
299 | /* *read should always be <= outl */ |
300 | ret = (int)read; | |
3befffa3 MC |
301 | } |
302 | ||
303 | return ret; | |
304 | } | |
305 | ||
42c60460 | 306 | int BIO_read_ex(BIO *b, void *data, size_t datal, size_t *read) |
bb5310be MC |
307 | { |
308 | int ret; | |
309 | ||
42c60460 | 310 | ret = bio_read_intern(b, data, datal, read); |
bb5310be MC |
311 | |
312 | if (ret > 0) | |
313 | ret = 1; | |
314 | else | |
315 | ret = 0; | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
42c60460 MC |
320 | static int bio_write_intern(BIO *b, const void *data, size_t datal, |
321 | size_t *written) | |
3befffa3 MC |
322 | { |
323 | int ret; | |
58964a49 | 324 | |
0f113f3e | 325 | if (b == NULL) |
bb5310be | 326 | return 0; |
d02b48c6 | 327 | |
0f113f3e | 328 | if ((b->method == NULL) || (b->method->bwrite == NULL)) { |
3befffa3 | 329 | BIOerr(BIO_F_BIO_WRITE_EX, BIO_R_UNSUPPORTED_METHOD); |
bb5310be | 330 | return -2; |
0f113f3e | 331 | } |
d02b48c6 | 332 | |
3befffa3 | 333 | if ((b->callback != NULL || b->callback_ex != NULL) && |
42c60460 | 334 | ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, datal, 0, 0L, 1L, |
98e553d2 | 335 | written)) <= 0)) |
3befffa3 | 336 | return ret; |
d02b48c6 | 337 | |
0f113f3e | 338 | if (!b->init) { |
3befffa3 MC |
339 | BIOerr(BIO_F_BIO_WRITE_EX, BIO_R_UNINITIALIZED); |
340 | return -2; | |
0f113f3e | 341 | } |
d02b48c6 | 342 | |
42c60460 | 343 | ret = b->method->bwrite(b, data, datal, written); |
dfeab068 | 344 | |
3befffa3 MC |
345 | if (ret > 0) |
346 | b->num_write += (uint64_t)*written; | |
d02b48c6 | 347 | |
3befffa3 | 348 | if (b->callback != NULL || b->callback_ex != NULL) |
42c60460 MC |
349 | ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data, |
350 | datal, 0, 0L, ret, written); | |
3befffa3 MC |
351 | |
352 | return ret; | |
0f113f3e | 353 | } |
d02b48c6 | 354 | |
42c60460 | 355 | int BIO_write(BIO *b, const void *data, int datal) |
bb5310be MC |
356 | { |
357 | size_t written; | |
358 | int ret; | |
359 | ||
42c60460 | 360 | if (datal < 0) |
bb5310be MC |
361 | return 0; |
362 | ||
42c60460 | 363 | ret = bio_write_intern(b, data, (size_t)datal, &written); |
bb5310be MC |
364 | |
365 | if (ret > 0) { | |
366 | /* *written should always be <= inl */ | |
367 | ret = (int)written; | |
368 | } | |
369 | ||
370 | return ret; | |
371 | } | |
372 | ||
42c60460 | 373 | int BIO_write_ex(BIO *b, const void *data, size_t datal, size_t *written) |
bb5310be MC |
374 | { |
375 | int ret; | |
376 | ||
42c60460 | 377 | ret = bio_write_intern(b, data, datal, written); |
bb5310be MC |
378 | |
379 | if (ret > 0) | |
380 | ret = 1; | |
381 | else | |
382 | ret = 0; | |
383 | ||
384 | return ret; | |
385 | } | |
386 | ||
6b691a5c | 387 | int BIO_puts(BIO *b, const char *in) |
0f113f3e | 388 | { |
98e553d2 | 389 | int ret; |
47263ace | 390 | size_t written = 0; |
d02b48c6 | 391 | |
0f113f3e MC |
392 | if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) { |
393 | BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD); | |
98e553d2 | 394 | return -2; |
0f113f3e | 395 | } |
d02b48c6 | 396 | |
98e553d2 MC |
397 | if (b->callback != NULL || b->callback_ex != NULL) { |
398 | ret = (int)bio_call_callback(b, BIO_CB_PUTS, in, 0, 0, 0L, 1L, NULL); | |
399 | if (ret <= 0) | |
400 | return ret; | |
401 | } | |
d02b48c6 | 402 | |
0f113f3e MC |
403 | if (!b->init) { |
404 | BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED); | |
98e553d2 | 405 | return -2; |
0f113f3e | 406 | } |
d02b48c6 | 407 | |
98e553d2 | 408 | ret = b->method->bputs(b, in); |
d02b48c6 | 409 | |
98e553d2 MC |
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, in, 0, 0, | |
418 | 0L, ret, &written); | |
419 | ||
420 | if (ret > 0) { | |
421 | if (written > INT_MAX) | |
422 | ret = -1; | |
423 | else | |
424 | ret = (int)written; | |
425 | } | |
7d95ff76 | 426 | |
98e553d2 | 427 | return ret; |
0f113f3e | 428 | } |
d02b48c6 | 429 | |
98e553d2 | 430 | int BIO_gets(BIO *b, char *out, int outl) |
0f113f3e | 431 | { |
98e553d2 | 432 | int ret; |
47263ace | 433 | size_t read = 0; |
0f113f3e MC |
434 | |
435 | if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) { | |
436 | BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD); | |
437 | return (-2); | |
438 | } | |
439 | ||
fbba62f6 MC |
440 | if (outl < 0) { |
441 | BIOerr(BIO_F_BIO_GETS, BIO_R_INVALID_ARGUMENT); | |
442 | return 0; | |
443 | } | |
444 | ||
98e553d2 MC |
445 | if (b->callback != NULL || b->callback_ex != NULL) { |
446 | ret = (int)bio_call_callback(b, BIO_CB_GETS, out, outl, 0, 0L, 1, NULL); | |
447 | if (ret <= 0) | |
448 | return ret; | |
449 | } | |
0f113f3e MC |
450 | |
451 | if (!b->init) { | |
452 | BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED); | |
453 | return (-2); | |
454 | } | |
455 | ||
98e553d2 MC |
456 | ret = b->method->bgets(b, out, outl); |
457 | ||
458 | if (ret > 0) { | |
459 | read = ret; | |
460 | ret = 1; | |
461 | } | |
462 | ||
463 | if (b->callback != NULL || b->callback_ex != NULL) | |
464 | ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, out, outl, | |
465 | 0, 0L, ret, &read); | |
466 | ||
467 | if (ret > 0) { | |
fbba62f6 MC |
468 | /* Shouldn't happen */ |
469 | if (read > (size_t)outl) | |
98e553d2 MC |
470 | ret = -1; |
471 | else | |
472 | ret = (int)read; | |
473 | } | |
0f113f3e | 474 | |
98e553d2 | 475 | return ret; |
0f113f3e MC |
476 | } |
477 | ||
478 | int BIO_indent(BIO *b, int indent, int max) | |
479 | { | |
480 | if (indent < 0) | |
481 | indent = 0; | |
482 | if (indent > max) | |
483 | indent = max; | |
484 | while (indent--) | |
485 | if (BIO_puts(b, " ") != 1) | |
486 | return 0; | |
487 | return 1; | |
488 | } | |
54a656ef | 489 | |
6b691a5c | 490 | long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) |
0f113f3e MC |
491 | { |
492 | int i; | |
d02b48c6 | 493 | |
0f113f3e MC |
494 | i = iarg; |
495 | return (BIO_ctrl(b, cmd, larg, (char *)&i)); | |
496 | } | |
d02b48c6 | 497 | |
417be660 | 498 | void *BIO_ptr_ctrl(BIO *b, int cmd, long larg) |
0f113f3e | 499 | { |
417be660 | 500 | void *p = NULL; |
58964a49 | 501 | |
0f113f3e MC |
502 | if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0) |
503 | return (NULL); | |
504 | else | |
505 | return (p); | |
506 | } | |
58964a49 | 507 | |
95d29597 | 508 | long BIO_ctrl(BIO *b, int cmd, long larg, void *parg) |
0f113f3e MC |
509 | { |
510 | long ret; | |
d02b48c6 | 511 | |
0f113f3e | 512 | if (b == NULL) |
98e553d2 | 513 | return 0; |
d02b48c6 | 514 | |
0f113f3e MC |
515 | if ((b->method == NULL) || (b->method->ctrl == NULL)) { |
516 | BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD); | |
98e553d2 | 517 | return -2; |
0f113f3e | 518 | } |
d02b48c6 | 519 | |
98e553d2 MC |
520 | if (b->callback != NULL || b->callback_ex != NULL) { |
521 | ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL); | |
522 | if (ret <= 0) | |
523 | return ret; | |
524 | } | |
d02b48c6 | 525 | |
0f113f3e | 526 | ret = b->method->ctrl(b, cmd, larg, parg); |
d02b48c6 | 527 | |
98e553d2 MC |
528 | if (b->callback != NULL || b->callback_ex != NULL) |
529 | ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd, | |
530 | larg, ret, NULL); | |
531 | ||
532 | return ret; | |
0f113f3e | 533 | } |
d02b48c6 | 534 | |
0f113f3e MC |
535 | long BIO_callback_ctrl(BIO *b, int cmd, |
536 | void (*fp) (struct bio_st *, int, const char *, int, | |
537 | long, long)) | |
538 | { | |
539 | long ret; | |
d3442bc7 | 540 | |
0f113f3e MC |
541 | if (b == NULL) |
542 | return (0); | |
d3442bc7 | 543 | |
0f113f3e MC |
544 | if ((b->method == NULL) || (b->method->callback_ctrl == NULL)) { |
545 | BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD); | |
546 | return (-2); | |
547 | } | |
d3442bc7 | 548 | |
98e553d2 MC |
549 | if (b->callback != NULL || b->callback_ex != NULL) { |
550 | ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L, | |
551 | NULL); | |
552 | if (ret <= 0) | |
553 | return ret; | |
554 | } | |
d3442bc7 | 555 | |
0f113f3e | 556 | ret = b->method->callback_ctrl(b, cmd, fp); |
d3442bc7 | 557 | |
98e553d2 MC |
558 | if (b->callback != NULL || b->callback_ex != NULL) |
559 | ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0, | |
560 | cmd, 0, ret, NULL); | |
561 | ||
562 | return ret; | |
0f113f3e | 563 | } |
d3442bc7 | 564 | |
0f113f3e MC |
565 | /* |
566 | * It is unfortunate to duplicate in functions what the BIO_(w)pending macros | |
95d29597 | 567 | * do; but those macros have inappropriate return type, and for interfacing |
0f113f3e MC |
568 | * from other programming languages, C macros aren't much of a help anyway. |
569 | */ | |
95d29597 | 570 | size_t BIO_ctrl_pending(BIO *bio) |
0f113f3e MC |
571 | { |
572 | return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL); | |
573 | } | |
95d29597 BM |
574 | |
575 | size_t BIO_ctrl_wpending(BIO *bio) | |
0f113f3e MC |
576 | { |
577 | return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL); | |
578 | } | |
95d29597 | 579 | |
d02b48c6 | 580 | /* put the 'bio' on the end of b's list of operators */ |
6b691a5c | 581 | BIO *BIO_push(BIO *b, BIO *bio) |
0f113f3e MC |
582 | { |
583 | BIO *lb; | |
584 | ||
585 | if (b == NULL) | |
586 | return (bio); | |
587 | lb = b; | |
588 | while (lb->next_bio != NULL) | |
589 | lb = lb->next_bio; | |
590 | lb->next_bio = bio; | |
591 | if (bio != NULL) | |
592 | bio->prev_bio = lb; | |
593 | /* called to do internal processing */ | |
594 | BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb); | |
595 | return (b); | |
596 | } | |
d02b48c6 RE |
597 | |
598 | /* Remove the first and return the rest */ | |
6b691a5c | 599 | BIO *BIO_pop(BIO *b) |
0f113f3e MC |
600 | { |
601 | BIO *ret; | |
d02b48c6 | 602 | |
0f113f3e MC |
603 | if (b == NULL) |
604 | return (NULL); | |
605 | ret = b->next_bio; | |
d02b48c6 | 606 | |
0f113f3e | 607 | BIO_ctrl(b, BIO_CTRL_POP, 0, b); |
5d780bab | 608 | |
0f113f3e MC |
609 | if (b->prev_bio != NULL) |
610 | b->prev_bio->next_bio = b->next_bio; | |
611 | if (b->next_bio != NULL) | |
612 | b->next_bio->prev_bio = b->prev_bio; | |
d02b48c6 | 613 | |
0f113f3e MC |
614 | b->next_bio = NULL; |
615 | b->prev_bio = NULL; | |
616 | return (ret); | |
617 | } | |
d02b48c6 | 618 | |
6b691a5c | 619 | BIO *BIO_get_retry_BIO(BIO *bio, int *reason) |
0f113f3e MC |
620 | { |
621 | BIO *b, *last; | |
622 | ||
623 | b = last = bio; | |
624 | for (;;) { | |
625 | if (!BIO_should_retry(b)) | |
626 | break; | |
627 | last = b; | |
628 | b = b->next_bio; | |
629 | if (b == NULL) | |
630 | break; | |
631 | } | |
632 | if (reason != NULL) | |
633 | *reason = last->retry_reason; | |
634 | return (last); | |
635 | } | |
d02b48c6 | 636 | |
6b691a5c | 637 | int BIO_get_retry_reason(BIO *bio) |
0f113f3e MC |
638 | { |
639 | return (bio->retry_reason); | |
640 | } | |
d02b48c6 | 641 | |
a146ae55 MC |
642 | void BIO_set_retry_reason(BIO *bio, int reason) |
643 | { | |
644 | bio->retry_reason = reason; | |
645 | } | |
646 | ||
6b691a5c | 647 | BIO *BIO_find_type(BIO *bio, int type) |
0f113f3e MC |
648 | { |
649 | int mt, mask; | |
650 | ||
cc99bfa7 | 651 | if (bio == NULL) |
0f113f3e MC |
652 | return NULL; |
653 | mask = type & 0xff; | |
654 | do { | |
655 | if (bio->method != NULL) { | |
656 | mt = bio->method->type; | |
657 | ||
658 | if (!mask) { | |
659 | if (mt & type) | |
660 | return (bio); | |
661 | } else if (mt == type) | |
662 | return (bio); | |
663 | } | |
664 | bio = bio->next_bio; | |
665 | } while (bio != NULL); | |
666 | return (NULL); | |
667 | } | |
d02b48c6 | 668 | |
cfd3bb17 | 669 | BIO *BIO_next(BIO *b) |
0f113f3e | 670 | { |
cc99bfa7 | 671 | if (b == NULL) |
0f113f3e MC |
672 | return NULL; |
673 | return b->next_bio; | |
674 | } | |
cfd3bb17 | 675 | |
a146ae55 MC |
676 | void BIO_set_next(BIO *b, BIO *next) |
677 | { | |
678 | b->next_bio = next; | |
679 | } | |
680 | ||
6b691a5c | 681 | void BIO_free_all(BIO *bio) |
0f113f3e MC |
682 | { |
683 | BIO *b; | |
684 | int ref; | |
685 | ||
686 | while (bio != NULL) { | |
687 | b = bio; | |
688 | ref = b->references; | |
689 | bio = bio->next_bio; | |
690 | BIO_free(b); | |
691 | /* Since ref count > 1, don't free anyone else. */ | |
692 | if (ref > 1) | |
693 | break; | |
694 | } | |
695 | } | |
d02b48c6 | 696 | |
6b691a5c | 697 | BIO *BIO_dup_chain(BIO *in) |
0f113f3e MC |
698 | { |
699 | BIO *ret = NULL, *eoc = NULL, *bio, *new_bio; | |
700 | ||
701 | for (bio = in; bio != NULL; bio = bio->next_bio) { | |
702 | if ((new_bio = BIO_new(bio->method)) == NULL) | |
703 | goto err; | |
704 | new_bio->callback = bio->callback; | |
98e553d2 | 705 | new_bio->callback_ex = bio->callback_ex; |
0f113f3e MC |
706 | new_bio->cb_arg = bio->cb_arg; |
707 | new_bio->init = bio->init; | |
708 | new_bio->shutdown = bio->shutdown; | |
709 | new_bio->flags = bio->flags; | |
710 | ||
711 | /* This will let SSL_s_sock() work with stdin/stdout */ | |
712 | new_bio->num = bio->num; | |
713 | ||
714 | if (!BIO_dup_state(bio, (char *)new_bio)) { | |
715 | BIO_free(new_bio); | |
716 | goto err; | |
717 | } | |
718 | ||
719 | /* copy app data */ | |
720 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data, | |
aec54108 MC |
721 | &bio->ex_data)) { |
722 | BIO_free(new_bio); | |
0f113f3e | 723 | goto err; |
aec54108 | 724 | } |
0f113f3e MC |
725 | |
726 | if (ret == NULL) { | |
727 | eoc = new_bio; | |
728 | ret = eoc; | |
729 | } else { | |
730 | BIO_push(eoc, new_bio); | |
731 | eoc = new_bio; | |
732 | } | |
733 | } | |
734 | return (ret); | |
735 | err: | |
aec54108 MC |
736 | BIO_free_all(ret); |
737 | ||
0f113f3e MC |
738 | return (NULL); |
739 | } | |
d02b48c6 | 740 | |
6b691a5c | 741 | void BIO_copy_next_retry(BIO *b) |
0f113f3e MC |
742 | { |
743 | BIO_set_flags(b, BIO_get_retry_flags(b->next_bio)); | |
744 | b->retry_reason = b->next_bio->retry_reason; | |
745 | } | |
d02b48c6 | 746 | |
dd9d233e | 747 | int BIO_set_ex_data(BIO *bio, int idx, void *data) |
0f113f3e MC |
748 | { |
749 | return (CRYPTO_set_ex_data(&(bio->ex_data), idx, data)); | |
750 | } | |
58964a49 | 751 | |
dd9d233e | 752 | void *BIO_get_ex_data(BIO *bio, int idx) |
0f113f3e MC |
753 | { |
754 | return (CRYPTO_get_ex_data(&(bio->ex_data), idx)); | |
755 | } | |
58964a49 | 756 | |
b8b12aad | 757 | uint64_t BIO_number_read(BIO *bio) |
c3ed3b6e | 758 | { |
0f113f3e MC |
759 | if (bio) |
760 | return bio->num_read; | |
761 | return 0; | |
c3ed3b6e DSH |
762 | } |
763 | ||
b8b12aad | 764 | uint64_t BIO_number_written(BIO *bio) |
c3ed3b6e | 765 | { |
0f113f3e MC |
766 | if (bio) |
767 | return bio->num_write; | |
768 | return 0; | |
c3ed3b6e | 769 | } |
ff234405 | 770 | |
1ee7b8b9 MC |
771 | void bio_free_ex_data(BIO *bio) |
772 | { | |
773 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); | |
774 | } | |
ff234405 MC |
775 | |
776 | void bio_cleanup(void) | |
777 | { | |
778 | #ifndef OPENSSL_NO_SOCK | |
779 | bio_sock_cleanup_int(); | |
780 | CRYPTO_THREAD_lock_free(bio_lookup_lock); | |
781 | bio_lookup_lock = NULL; | |
5a7ad1f0 | 782 | #endif |
8b8d963d RS |
783 | CRYPTO_THREAD_lock_free(bio_type_lock); |
784 | bio_type_lock = NULL; | |
ff234405 | 785 | } |