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Commit | Line | Data |
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b1322259 | 1 | /* |
4333b89f | 2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
09abbca1 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
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 | ||
0800318a TM |
10 | #define OPENSSL_SUPPRESS_DEPRECATED |
11 | ||
d02b48c6 RE |
12 | #include <stdio.h> |
13 | #include <errno.h> | |
ec577822 | 14 | #include <openssl/crypto.h> |
c6be0aa8 | 15 | #include "internal/numbers.h" |
706457b7 | 16 | #include "bio_local.h" |
58964a49 | 17 | |
98e553d2 MC |
18 | /* |
19 | * Helper macro for the callback to determine whether an operator expects a | |
20 | * len parameter or not | |
21 | */ | |
dc88a039 DDO |
22 | #define HAS_LEN_OPER(o) ((o) == BIO_CB_READ || (o) == BIO_CB_WRITE \ |
23 | || (o) == BIO_CB_GETS) | |
98e553d2 | 24 | |
0800318a TM |
25 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
26 | # define HAS_CALLBACK(b) ((b)->callback != NULL || (b)->callback_ex != NULL) | |
27 | #else | |
28 | # define HAS_CALLBACK(b) ((b)->callback_ex != NULL) | |
29 | #endif | |
98e553d2 MC |
30 | /* |
31 | * Helper function to work out whether to call the new style callback or the old | |
32 | * one, and translate between the two. | |
33 | * | |
34 | * This has a long return type for consistency with the old callback. Similarly | |
35 | * for the "long" used for "inret" | |
36 | */ | |
37 | static long bio_call_callback(BIO *b, int oper, const char *argp, size_t len, | |
dc88a039 DDO |
38 | int argi, long argl, long inret, |
39 | size_t *processed) | |
98e553d2 | 40 | { |
0800318a TM |
41 | long ret = inret; |
42 | #ifndef OPENSSL_NO_DEPRECATED_3_0 | |
98e553d2 MC |
43 | int bareoper; |
44 | ||
c911e5da | 45 | if (b->callback_ex != NULL) |
0800318a | 46 | #endif |
98e553d2 | 47 | return b->callback_ex(b, oper, argp, len, argi, argl, inret, processed); |
98e553d2 | 48 | |
0800318a | 49 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
98e553d2 MC |
50 | /* Strip off any BIO_CB_RETURN flag */ |
51 | bareoper = oper & ~BIO_CB_RETURN; | |
52 | ||
53 | /* | |
54 | * We have an old style callback, so we will have to do nasty casts and | |
55 | * check for overflows. | |
56 | */ | |
57 | if (HAS_LEN_OPER(bareoper)) { | |
58 | /* In this case |len| is set, and should be used instead of |argi| */ | |
59 | if (len > INT_MAX) | |
60 | return -1; | |
61 | ||
62 | argi = (int)len; | |
c911e5da | 63 | } |
98e553d2 | 64 | |
d97ce8d9 | 65 | if (inret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) { |
c911e5da BE |
66 | if (*processed > INT_MAX) |
67 | return -1; | |
68 | inret = *processed; | |
98e553d2 MC |
69 | } |
70 | ||
71 | ret = b->callback(b, oper, argp, argi, argl, inret); | |
72 | ||
d97ce8d9 | 73 | if (ret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) { |
98e553d2 MC |
74 | *processed = (size_t)ret; |
75 | ret = 1; | |
76 | } | |
0800318a | 77 | #endif |
98e553d2 MC |
78 | return ret; |
79 | } | |
80 | ||
b0ee1de9 | 81 | BIO *BIO_new_ex(OSSL_LIB_CTX *libctx, const BIO_METHOD *method) |
0f113f3e | 82 | { |
9d7bfb14 | 83 | BIO *bio = OPENSSL_zalloc(sizeof(*bio)); |
0f113f3e | 84 | |
e077455e | 85 | if (bio == NULL) |
26a7d938 | 86 | return NULL; |
d02b48c6 | 87 | |
b0ee1de9 | 88 | bio->libctx = libctx; |
0f113f3e | 89 | bio->method = method; |
0f113f3e | 90 | bio->shutdown = 1; |
9d7bfb14 | 91 | |
a22d1966 | 92 | if (!CRYPTO_NEW_REF(&bio->references, 1)) |
9d7bfb14 | 93 | goto err; |
fb46be03 | 94 | |
a22d1966 | 95 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data)) |
9d7bfb14 | 96 | goto err; |
fb46be03 | 97 | |
9d7bfb14 | 98 | if (method->create != NULL && !method->create(bio)) { |
9311d0c4 | 99 | ERR_raise(ERR_LIB_BIO, ERR_R_INIT_FAIL); |
9d7bfb14 | 100 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); |
a22d1966 | 101 | CRYPTO_FREE_REF(&bio->references); |
9d7bfb14 | 102 | goto err; |
fb46be03 | 103 | } |
7f55808f RL |
104 | if (method->create == NULL) |
105 | bio->init = 1; | |
fb46be03 | 106 | |
9d7bfb14 F |
107 | return bio; |
108 | ||
109 | err: | |
a22d1966 | 110 | CRYPTO_FREE_REF(&bio->references); |
9d7bfb14 F |
111 | OPENSSL_free(bio); |
112 | return NULL; | |
0f113f3e | 113 | } |
d02b48c6 | 114 | |
b0ee1de9 MC |
115 | BIO *BIO_new(const BIO_METHOD *method) |
116 | { | |
117 | return BIO_new_ex(NULL, method); | |
118 | } | |
119 | ||
6b691a5c | 120 | int BIO_free(BIO *a) |
0f113f3e | 121 | { |
98e553d2 | 122 | int ret; |
d02b48c6 | 123 | |
0f113f3e | 124 | if (a == NULL) |
fb46be03 AG |
125 | return 0; |
126 | ||
a22d1966 | 127 | if (CRYPTO_DOWN_REF(&a->references, &ret) <= 0) |
fb46be03 | 128 | return 0; |
d02b48c6 | 129 | |
f3f1cf84 | 130 | REF_PRINT_COUNT("BIO", a); |
98e553d2 | 131 | if (ret > 0) |
fb46be03 | 132 | return 1; |
98e553d2 MC |
133 | REF_ASSERT_ISNT(ret < 0); |
134 | ||
0800318a | 135 | if (HAS_CALLBACK(a)) { |
98e553d2 MC |
136 | ret = (int)bio_call_callback(a, BIO_CB_FREE, NULL, 0, 0, 0L, 1L, NULL); |
137 | if (ret <= 0) | |
d8f6c533 | 138 | return 0; |
98e553d2 | 139 | } |
d02b48c6 | 140 | |
a14a740d F |
141 | if ((a->method != NULL) && (a->method->destroy != NULL)) |
142 | a->method->destroy(a); | |
143 | ||
0f113f3e | 144 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); |
58964a49 | 145 | |
a22d1966 | 146 | CRYPTO_FREE_REF(&a->references); |
fb46be03 | 147 | |
0f113f3e | 148 | OPENSSL_free(a); |
fb46be03 AG |
149 | |
150 | return 1; | |
0f113f3e | 151 | } |
d02b48c6 | 152 | |
a146ae55 MC |
153 | void BIO_set_data(BIO *a, void *ptr) |
154 | { | |
155 | a->ptr = ptr; | |
156 | } | |
157 | ||
158 | void *BIO_get_data(BIO *a) | |
159 | { | |
160 | return a->ptr; | |
161 | } | |
162 | ||
163 | void BIO_set_init(BIO *a, int init) | |
164 | { | |
165 | a->init = init; | |
166 | } | |
167 | ||
168 | int BIO_get_init(BIO *a) | |
169 | { | |
170 | return a->init; | |
171 | } | |
172 | ||
173 | void BIO_set_shutdown(BIO *a, int shut) | |
174 | { | |
175 | a->shutdown = shut; | |
176 | } | |
177 | ||
178 | int BIO_get_shutdown(BIO *a) | |
179 | { | |
180 | return a->shutdown; | |
181 | } | |
182 | ||
371acb22 | 183 | void BIO_vfree(BIO *a) |
0f113f3e MC |
184 | { |
185 | BIO_free(a); | |
186 | } | |
371acb22 | 187 | |
fb46be03 AG |
188 | int BIO_up_ref(BIO *a) |
189 | { | |
190 | int i; | |
191 | ||
a22d1966 | 192 | if (CRYPTO_UP_REF(&a->references, &i) <= 0) |
fb46be03 AG |
193 | return 0; |
194 | ||
195 | REF_PRINT_COUNT("BIO", a); | |
196 | REF_ASSERT_ISNT(i < 2); | |
dc88a039 | 197 | return i > 1; |
fb46be03 AG |
198 | } |
199 | ||
7806f3dd | 200 | void BIO_clear_flags(BIO *b, int flags) |
0f113f3e MC |
201 | { |
202 | b->flags &= ~flags; | |
203 | } | |
204 | ||
205 | int BIO_test_flags(const BIO *b, int flags) | |
206 | { | |
207 | return (b->flags & flags); | |
208 | } | |
209 | ||
210 | void BIO_set_flags(BIO *b, int flags) | |
211 | { | |
212 | b->flags |= flags; | |
213 | } | |
214 | ||
0800318a | 215 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
d07aee2c MC |
216 | BIO_callback_fn BIO_get_callback(const BIO *b) |
217 | { | |
0f113f3e MC |
218 | return b->callback; |
219 | } | |
220 | ||
d07aee2c | 221 | void BIO_set_callback(BIO *b, BIO_callback_fn cb) |
0f113f3e MC |
222 | { |
223 | b->callback = cb; | |
224 | } | |
0800318a | 225 | #endif |
7806f3dd | 226 | |
d07aee2c MC |
227 | BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b) |
228 | { | |
229 | return b->callback_ex; | |
230 | } | |
231 | ||
232 | void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex cb) | |
233 | { | |
234 | b->callback_ex = cb; | |
235 | } | |
236 | ||
7806f3dd | 237 | void BIO_set_callback_arg(BIO *b, char *arg) |
0f113f3e MC |
238 | { |
239 | b->cb_arg = arg; | |
240 | } | |
7806f3dd | 241 | |
0f113f3e MC |
242 | char *BIO_get_callback_arg(const BIO *b) |
243 | { | |
244 | return b->cb_arg; | |
245 | } | |
7806f3dd | 246 | |
0f113f3e MC |
247 | const char *BIO_method_name(const BIO *b) |
248 | { | |
249 | return b->method->name; | |
250 | } | |
7806f3dd NL |
251 | |
252 | int BIO_method_type(const BIO *b) | |
0f113f3e MC |
253 | { |
254 | return b->method->type; | |
255 | } | |
7806f3dd | 256 | |
bb5310be MC |
257 | /* |
258 | * This is essentially the same as BIO_read_ex() except that it allows | |
7bf79e33 MC |
259 | * 0 or a negative value to indicate failure (retryable or not) in the return. |
260 | * This is for compatibility with the old style BIO_read(), where existing code | |
261 | * may make assumptions about the return value that it might get. | |
bb5310be | 262 | */ |
d62bf89c | 263 | static int bio_read_intern(BIO *b, void *data, size_t dlen, size_t *readbytes) |
d07aee2c MC |
264 | { |
265 | int ret; | |
d02b48c6 | 266 | |
dc88a039 | 267 | if (b == NULL) { |
ed4a9b15 | 268 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); |
dc88a039 DDO |
269 | return -1; |
270 | } | |
271 | if (b->method == NULL || b->method->bread == NULL) { | |
9311d0c4 | 272 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); |
bb5310be | 273 | return -2; |
0f113f3e | 274 | } |
d02b48c6 | 275 | |
0800318a | 276 | if (HAS_CALLBACK(b) && |
7bf79e33 | 277 | ((ret = (int)bio_call_callback(b, BIO_CB_READ, data, dlen, 0, 0L, 1L, |
c911e5da | 278 | NULL)) <= 0)) |
d07aee2c | 279 | return ret; |
d02b48c6 | 280 | |
0f113f3e | 281 | if (!b->init) { |
9311d0c4 | 282 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); |
dc88a039 | 283 | return -1; |
0f113f3e | 284 | } |
d02b48c6 | 285 | |
d62bf89c | 286 | ret = b->method->bread(b, data, dlen, readbytes); |
dfeab068 | 287 | |
d07aee2c | 288 | if (ret > 0) |
82cb311f | 289 | b->num_read += (uint64_t)*readbytes; |
d07aee2c | 290 | |
0800318a | 291 | if (HAS_CALLBACK(b)) |
42c60460 | 292 | ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN, data, |
d62bf89c | 293 | dlen, 0, 0L, ret, readbytes); |
d02b48c6 | 294 | |
fbba62f6 | 295 | /* Shouldn't happen */ |
d62bf89c | 296 | if (ret > 0 && *readbytes > dlen) { |
9311d0c4 | 297 | ERR_raise(ERR_LIB_BIO, ERR_R_INTERNAL_ERROR); |
fbba62f6 | 298 | return -1; |
7bf79e33 | 299 | } |
fbba62f6 | 300 | |
d07aee2c | 301 | return ret; |
0f113f3e | 302 | } |
d02b48c6 | 303 | |
7bf79e33 | 304 | int BIO_read(BIO *b, void *data, int dlen) |
0f113f3e | 305 | { |
d62bf89c | 306 | size_t readbytes; |
3befffa3 MC |
307 | int ret; |
308 | ||
7bf79e33 | 309 | if (dlen < 0) |
3befffa3 MC |
310 | return 0; |
311 | ||
d62bf89c | 312 | ret = bio_read_intern(b, data, (size_t)dlen, &readbytes); |
3befffa3 MC |
313 | |
314 | if (ret > 0) { | |
4e3973b4 | 315 | /* *readbytes should always be <= dlen */ |
d62bf89c | 316 | ret = (int)readbytes; |
3befffa3 MC |
317 | } |
318 | ||
319 | return ret; | |
320 | } | |
321 | ||
d62bf89c | 322 | int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes) |
bb5310be | 323 | { |
dc88a039 | 324 | return bio_read_intern(b, data, dlen, readbytes) > 0; |
bb5310be MC |
325 | } |
326 | ||
7bf79e33 | 327 | static int bio_write_intern(BIO *b, const void *data, size_t dlen, |
42c60460 | 328 | size_t *written) |
3befffa3 | 329 | { |
5d43bfa7 | 330 | size_t local_written; |
3befffa3 | 331 | int ret; |
58964a49 | 332 | |
5d43bfa7 DDO |
333 | if (written != NULL) |
334 | *written = 0; | |
f505161e SL |
335 | /* |
336 | * b == NULL is not an error but just means that zero bytes are written. | |
337 | * Do not raise an error here. | |
338 | */ | |
339 | if (b == NULL) | |
340 | return 0; | |
341 | ||
dc88a039 | 342 | if (b->method == NULL || b->method->bwrite == NULL) { |
9311d0c4 | 343 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); |
bb5310be | 344 | return -2; |
0f113f3e | 345 | } |
d02b48c6 | 346 | |
0800318a | 347 | if (HAS_CALLBACK(b) && |
7bf79e33 | 348 | ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, dlen, 0, 0L, 1L, |
c911e5da | 349 | NULL)) <= 0)) |
3befffa3 | 350 | return ret; |
d02b48c6 | 351 | |
0f113f3e | 352 | if (!b->init) { |
9311d0c4 | 353 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); |
dc88a039 | 354 | return -1; |
0f113f3e | 355 | } |
d02b48c6 | 356 | |
5d43bfa7 | 357 | ret = b->method->bwrite(b, data, dlen, &local_written); |
dfeab068 | 358 | |
3befffa3 | 359 | if (ret > 0) |
5d43bfa7 | 360 | b->num_write += (uint64_t)local_written; |
d02b48c6 | 361 | |
0800318a | 362 | if (HAS_CALLBACK(b)) |
42c60460 | 363 | ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data, |
5d43bfa7 | 364 | dlen, 0, 0L, ret, &local_written); |
3befffa3 | 365 | |
5d43bfa7 DDO |
366 | if (written != NULL) |
367 | *written = local_written; | |
3befffa3 | 368 | return ret; |
0f113f3e | 369 | } |
d02b48c6 | 370 | |
7bf79e33 | 371 | int BIO_write(BIO *b, const void *data, int dlen) |
bb5310be MC |
372 | { |
373 | size_t written; | |
374 | int ret; | |
375 | ||
5d43bfa7 | 376 | if (dlen <= 0) |
bb5310be MC |
377 | return 0; |
378 | ||
7bf79e33 | 379 | ret = bio_write_intern(b, data, (size_t)dlen, &written); |
bb5310be MC |
380 | |
381 | if (ret > 0) { | |
5d43bfa7 | 382 | /* written should always be <= dlen */ |
bb5310be MC |
383 | ret = (int)written; |
384 | } | |
385 | ||
386 | return ret; | |
387 | } | |
388 | ||
7bf79e33 | 389 | int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written) |
bb5310be | 390 | { |
bb19b9d4 DDO |
391 | return bio_write_intern(b, data, dlen, written) > 0 |
392 | || (b != NULL && dlen == 0); /* order is important for *written */ | |
bb5310be MC |
393 | } |
394 | ||
e0c4e43e HL |
395 | int BIO_sendmmsg(BIO *b, BIO_MSG *msg, |
396 | size_t stride, size_t num_msg, uint64_t flags, | |
397 | size_t *msgs_processed) | |
398 | { | |
399 | size_t ret; | |
400 | BIO_MMSG_CB_ARGS args; | |
401 | ||
402 | if (b == NULL) { | |
403 | *msgs_processed = 0; | |
404 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); | |
405 | return 0; | |
406 | } | |
407 | ||
408 | if (b->method == NULL || b->method->bsendmmsg == NULL) { | |
409 | *msgs_processed = 0; | |
410 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); | |
411 | return 0; | |
412 | } | |
413 | ||
414 | if (HAS_CALLBACK(b)) { | |
415 | args.msg = msg; | |
416 | args.stride = stride; | |
417 | args.num_msg = num_msg; | |
418 | args.flags = flags; | |
419 | args.msgs_processed = msgs_processed; | |
420 | ||
421 | ret = (size_t)bio_call_callback(b, BIO_CB_SENDMMSG, (void *)&args, | |
422 | 0, 0, 0, 0, NULL); | |
423 | if (ret == 0) | |
424 | return 0; | |
425 | } | |
426 | ||
427 | if (!b->init) { | |
428 | *msgs_processed = 0; | |
429 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); | |
430 | return 0; | |
431 | } | |
432 | ||
433 | ret = b->method->bsendmmsg(b, msg, stride, num_msg, flags, msgs_processed); | |
434 | ||
435 | if (HAS_CALLBACK(b)) | |
436 | ret = (size_t)bio_call_callback(b, BIO_CB_SENDMMSG | BIO_CB_RETURN, | |
437 | (void *)&args, ret, 0, 0, 0, NULL); | |
438 | ||
439 | return ret; | |
440 | } | |
441 | ||
442 | int BIO_recvmmsg(BIO *b, BIO_MSG *msg, | |
443 | size_t stride, size_t num_msg, uint64_t flags, | |
444 | size_t *msgs_processed) | |
445 | { | |
446 | size_t ret; | |
447 | BIO_MMSG_CB_ARGS args; | |
448 | ||
449 | if (b == NULL) { | |
450 | *msgs_processed = 0; | |
451 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | if (b->method == NULL || b->method->brecvmmsg == NULL) { | |
456 | *msgs_processed = 0; | |
457 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); | |
458 | return 0; | |
459 | } | |
460 | ||
461 | if (HAS_CALLBACK(b)) { | |
462 | args.msg = msg; | |
463 | args.stride = stride; | |
464 | args.num_msg = num_msg; | |
465 | args.flags = flags; | |
466 | args.msgs_processed = msgs_processed; | |
467 | ||
468 | ret = bio_call_callback(b, BIO_CB_RECVMMSG, (void *)&args, | |
469 | 0, 0, 0, 0, NULL); | |
470 | if (ret == 0) | |
471 | return 0; | |
472 | } | |
473 | ||
474 | if (!b->init) { | |
475 | *msgs_processed = 0; | |
476 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); | |
477 | return 0; | |
478 | } | |
479 | ||
480 | ret = b->method->brecvmmsg(b, msg, stride, num_msg, flags, msgs_processed); | |
481 | ||
482 | if (HAS_CALLBACK(b)) | |
483 | ret = (size_t)bio_call_callback(b, BIO_CB_RECVMMSG | BIO_CB_RETURN, | |
484 | (void *)&args, ret, 0, 0, 0, NULL); | |
485 | ||
486 | return ret; | |
487 | } | |
488 | ||
68801bcb HL |
489 | int BIO_get_rpoll_descriptor(BIO *b, BIO_POLL_DESCRIPTOR *desc) |
490 | { | |
491 | return BIO_ctrl(b, BIO_CTRL_GET_RPOLL_DESCRIPTOR, 0, desc); | |
492 | } | |
493 | ||
494 | int BIO_get_wpoll_descriptor(BIO *b, BIO_POLL_DESCRIPTOR *desc) | |
495 | { | |
496 | return BIO_ctrl(b, BIO_CTRL_GET_WPOLL_DESCRIPTOR, 0, desc); | |
497 | } | |
498 | ||
4e3973b4 | 499 | int BIO_puts(BIO *b, const char *buf) |
0f113f3e | 500 | { |
98e553d2 | 501 | int ret; |
47263ace | 502 | size_t written = 0; |
d02b48c6 | 503 | |
dc88a039 | 504 | if (b == NULL) { |
ed4a9b15 | 505 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); |
dc88a039 DDO |
506 | return -1; |
507 | } | |
508 | if (b->method == NULL || b->method->bputs == NULL) { | |
9311d0c4 | 509 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); |
98e553d2 | 510 | return -2; |
0f113f3e | 511 | } |
d02b48c6 | 512 | |
0800318a | 513 | if (HAS_CALLBACK(b)) { |
4e3973b4 | 514 | ret = (int)bio_call_callback(b, BIO_CB_PUTS, buf, 0, 0, 0L, 1L, NULL); |
98e553d2 MC |
515 | if (ret <= 0) |
516 | return ret; | |
517 | } | |
d02b48c6 | 518 | |
0f113f3e | 519 | if (!b->init) { |
9311d0c4 | 520 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); |
dc88a039 | 521 | return -1; |
0f113f3e | 522 | } |
d02b48c6 | 523 | |
4e3973b4 | 524 | ret = b->method->bputs(b, buf); |
d02b48c6 | 525 | |
98e553d2 MC |
526 | if (ret > 0) { |
527 | b->num_write += (uint64_t)ret; | |
528 | written = ret; | |
529 | ret = 1; | |
530 | } | |
531 | ||
0800318a | 532 | if (HAS_CALLBACK(b)) |
4e3973b4 | 533 | ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN, buf, 0, 0, |
98e553d2 MC |
534 | 0L, ret, &written); |
535 | ||
536 | if (ret > 0) { | |
7bf79e33 | 537 | if (written > INT_MAX) { |
9311d0c4 | 538 | ERR_raise(ERR_LIB_BIO, BIO_R_LENGTH_TOO_LONG); |
98e553d2 | 539 | ret = -1; |
7bf79e33 | 540 | } else { |
98e553d2 | 541 | ret = (int)written; |
7bf79e33 | 542 | } |
98e553d2 | 543 | } |
7d95ff76 | 544 | |
98e553d2 | 545 | return ret; |
0f113f3e | 546 | } |
d02b48c6 | 547 | |
4e3973b4 | 548 | int BIO_gets(BIO *b, char *buf, int size) |
0f113f3e | 549 | { |
98e553d2 | 550 | int ret; |
d62bf89c | 551 | size_t readbytes = 0; |
0f113f3e | 552 | |
dc88a039 | 553 | if (b == NULL) { |
ed4a9b15 | 554 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); |
dc88a039 DDO |
555 | return -1; |
556 | } | |
557 | if (b->method == NULL || b->method->bgets == NULL) { | |
9311d0c4 | 558 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); |
26a7d938 | 559 | return -2; |
0f113f3e MC |
560 | } |
561 | ||
4e3973b4 | 562 | if (size < 0) { |
9311d0c4 | 563 | ERR_raise(ERR_LIB_BIO, BIO_R_INVALID_ARGUMENT); |
dc88a039 | 564 | return -1; |
fbba62f6 MC |
565 | } |
566 | ||
0800318a | 567 | if (HAS_CALLBACK(b)) { |
4e3973b4 | 568 | ret = (int)bio_call_callback(b, BIO_CB_GETS, buf, size, 0, 0L, 1, NULL); |
98e553d2 MC |
569 | if (ret <= 0) |
570 | return ret; | |
571 | } | |
0f113f3e MC |
572 | |
573 | if (!b->init) { | |
9311d0c4 | 574 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); |
dc88a039 | 575 | return -1; |
0f113f3e MC |
576 | } |
577 | ||
4e3973b4 | 578 | ret = b->method->bgets(b, buf, size); |
98e553d2 MC |
579 | |
580 | if (ret > 0) { | |
d62bf89c | 581 | readbytes = ret; |
98e553d2 MC |
582 | ret = 1; |
583 | } | |
584 | ||
0800318a | 585 | if (HAS_CALLBACK(b)) |
4e3973b4 | 586 | ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, buf, size, |
d62bf89c | 587 | 0, 0L, ret, &readbytes); |
98e553d2 MC |
588 | |
589 | if (ret > 0) { | |
fbba62f6 | 590 | /* Shouldn't happen */ |
4e3973b4 | 591 | if (readbytes > (size_t)size) |
98e553d2 MC |
592 | ret = -1; |
593 | else | |
d62bf89c | 594 | ret = (int)readbytes; |
98e553d2 | 595 | } |
0f113f3e | 596 | |
98e553d2 | 597 | return ret; |
0f113f3e MC |
598 | } |
599 | ||
18423879 DDO |
600 | int BIO_get_line(BIO *bio, char *buf, int size) |
601 | { | |
602 | int ret = 0; | |
603 | char *ptr = buf; | |
604 | ||
605 | if (buf == NULL) { | |
606 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); | |
607 | return -1; | |
608 | } | |
609 | if (size <= 0) { | |
610 | ERR_raise(ERR_LIB_BIO, BIO_R_INVALID_ARGUMENT); | |
611 | return -1; | |
612 | } | |
613 | *buf = '\0'; | |
614 | ||
615 | if (bio == NULL) { | |
616 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); | |
617 | return -1; | |
618 | } | |
619 | if (!bio->init) { | |
620 | ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED); | |
621 | return -1; | |
622 | } | |
623 | ||
624 | while (size-- > 1 && (ret = BIO_read(bio, ptr, 1)) > 0) | |
625 | if (*ptr++ == '\n') | |
626 | break; | |
627 | *ptr = '\0'; | |
628 | return ret > 0 || BIO_eof(bio) ? ptr - buf : ret; | |
629 | } | |
630 | ||
0f113f3e MC |
631 | int BIO_indent(BIO *b, int indent, int max) |
632 | { | |
633 | if (indent < 0) | |
634 | indent = 0; | |
635 | if (indent > max) | |
636 | indent = max; | |
637 | while (indent--) | |
638 | if (BIO_puts(b, " ") != 1) | |
639 | return 0; | |
640 | return 1; | |
641 | } | |
54a656ef | 642 | |
6b691a5c | 643 | long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) |
0f113f3e MC |
644 | { |
645 | int i; | |
d02b48c6 | 646 | |
0f113f3e | 647 | i = iarg; |
26a7d938 | 648 | return BIO_ctrl(b, cmd, larg, (char *)&i); |
0f113f3e | 649 | } |
d02b48c6 | 650 | |
417be660 | 651 | void *BIO_ptr_ctrl(BIO *b, int cmd, long larg) |
0f113f3e | 652 | { |
417be660 | 653 | void *p = NULL; |
58964a49 | 654 | |
0f113f3e | 655 | if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0) |
26a7d938 | 656 | return NULL; |
0f113f3e | 657 | else |
26a7d938 | 658 | return p; |
0f113f3e | 659 | } |
58964a49 | 660 | |
95d29597 | 661 | long BIO_ctrl(BIO *b, int cmd, long larg, void *parg) |
0f113f3e MC |
662 | { |
663 | long ret; | |
d02b48c6 | 664 | |
398ae823 | 665 | if (b == NULL) |
dc88a039 | 666 | return -1; |
dc88a039 | 667 | if (b->method == NULL || b->method->ctrl == NULL) { |
9311d0c4 | 668 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); |
98e553d2 | 669 | return -2; |
0f113f3e | 670 | } |
d02b48c6 | 671 | |
0800318a | 672 | if (HAS_CALLBACK(b)) { |
98e553d2 MC |
673 | ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL); |
674 | if (ret <= 0) | |
675 | return ret; | |
676 | } | |
d02b48c6 | 677 | |
0f113f3e | 678 | ret = b->method->ctrl(b, cmd, larg, parg); |
d02b48c6 | 679 | |
0800318a | 680 | if (HAS_CALLBACK(b)) |
98e553d2 MC |
681 | ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd, |
682 | larg, ret, NULL); | |
683 | ||
684 | return ret; | |
0f113f3e | 685 | } |
d02b48c6 | 686 | |
fce78bd4 | 687 | long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp) |
0f113f3e MC |
688 | { |
689 | long ret; | |
d3442bc7 | 690 | |
398ae823 | 691 | if (b == NULL) |
ed4a9b15 | 692 | return -2; |
dc88a039 DDO |
693 | if (b->method == NULL || b->method->callback_ctrl == NULL |
694 | || cmd != BIO_CTRL_SET_CALLBACK) { | |
9311d0c4 | 695 | ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD); |
26a7d938 | 696 | return -2; |
0f113f3e | 697 | } |
d3442bc7 | 698 | |
0800318a | 699 | if (HAS_CALLBACK(b)) { |
98e553d2 MC |
700 | ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L, |
701 | NULL); | |
702 | if (ret <= 0) | |
703 | return ret; | |
704 | } | |
d3442bc7 | 705 | |
0f113f3e | 706 | ret = b->method->callback_ctrl(b, cmd, fp); |
d3442bc7 | 707 | |
0800318a | 708 | if (HAS_CALLBACK(b)) |
98e553d2 MC |
709 | ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0, |
710 | cmd, 0, ret, NULL); | |
711 | ||
712 | return ret; | |
0f113f3e | 713 | } |
d3442bc7 | 714 | |
0f113f3e MC |
715 | /* |
716 | * It is unfortunate to duplicate in functions what the BIO_(w)pending macros | |
95d29597 | 717 | * do; but those macros have inappropriate return type, and for interfacing |
0f113f3e MC |
718 | * from other programming languages, C macros aren't much of a help anyway. |
719 | */ | |
95d29597 | 720 | size_t BIO_ctrl_pending(BIO *bio) |
0f113f3e | 721 | { |
e9809f8a TM |
722 | long ret = BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL); |
723 | ||
724 | if (ret < 0) | |
725 | ret = 0; | |
c6be0aa8 TM |
726 | #if LONG_MAX > SIZE_MAX |
727 | if (ret > SIZE_MAX) | |
728 | ret = SIZE_MAX; | |
729 | #endif | |
e9809f8a | 730 | return (size_t)ret; |
0f113f3e | 731 | } |
95d29597 BM |
732 | |
733 | size_t BIO_ctrl_wpending(BIO *bio) | |
0f113f3e | 734 | { |
e9809f8a TM |
735 | long ret = BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL); |
736 | ||
737 | if (ret < 0) | |
738 | ret = 0; | |
c6be0aa8 TM |
739 | #if LONG_MAX > SIZE_MAX |
740 | if (ret > SIZE_MAX) | |
741 | ret = SIZE_MAX; | |
742 | #endif | |
e9809f8a | 743 | return (size_t)ret; |
0f113f3e | 744 | } |
95d29597 | 745 | |
d02b48c6 | 746 | /* put the 'bio' on the end of b's list of operators */ |
6b691a5c | 747 | BIO *BIO_push(BIO *b, BIO *bio) |
0f113f3e MC |
748 | { |
749 | BIO *lb; | |
750 | ||
751 | if (b == NULL) | |
26a7d938 | 752 | return bio; |
0f113f3e MC |
753 | lb = b; |
754 | while (lb->next_bio != NULL) | |
755 | lb = lb->next_bio; | |
756 | lb->next_bio = bio; | |
757 | if (bio != NULL) | |
758 | bio->prev_bio = lb; | |
759 | /* called to do internal processing */ | |
760 | BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb); | |
26a7d938 | 761 | return b; |
0f113f3e | 762 | } |
d02b48c6 RE |
763 | |
764 | /* Remove the first and return the rest */ | |
6b691a5c | 765 | BIO *BIO_pop(BIO *b) |
0f113f3e MC |
766 | { |
767 | BIO *ret; | |
d02b48c6 | 768 | |
398ae823 | 769 | if (b == NULL) |
26a7d938 | 770 | return NULL; |
0f113f3e | 771 | ret = b->next_bio; |
d02b48c6 | 772 | |
0f113f3e | 773 | BIO_ctrl(b, BIO_CTRL_POP, 0, b); |
5d780bab | 774 | |
0f113f3e MC |
775 | if (b->prev_bio != NULL) |
776 | b->prev_bio->next_bio = b->next_bio; | |
777 | if (b->next_bio != NULL) | |
778 | b->next_bio->prev_bio = b->prev_bio; | |
d02b48c6 | 779 | |
0f113f3e MC |
780 | b->next_bio = NULL; |
781 | b->prev_bio = NULL; | |
26a7d938 | 782 | return ret; |
0f113f3e | 783 | } |
d02b48c6 | 784 | |
6b691a5c | 785 | BIO *BIO_get_retry_BIO(BIO *bio, int *reason) |
0f113f3e MC |
786 | { |
787 | BIO *b, *last; | |
788 | ||
789 | b = last = bio; | |
790 | for (;;) { | |
791 | if (!BIO_should_retry(b)) | |
792 | break; | |
793 | last = b; | |
794 | b = b->next_bio; | |
795 | if (b == NULL) | |
796 | break; | |
797 | } | |
798 | if (reason != NULL) | |
799 | *reason = last->retry_reason; | |
26a7d938 | 800 | return last; |
0f113f3e | 801 | } |
d02b48c6 | 802 | |
6b691a5c | 803 | int BIO_get_retry_reason(BIO *bio) |
0f113f3e | 804 | { |
26a7d938 | 805 | return bio->retry_reason; |
0f113f3e | 806 | } |
d02b48c6 | 807 | |
a146ae55 MC |
808 | void BIO_set_retry_reason(BIO *bio, int reason) |
809 | { | |
810 | bio->retry_reason = reason; | |
811 | } | |
812 | ||
6b691a5c | 813 | BIO *BIO_find_type(BIO *bio, int type) |
0f113f3e MC |
814 | { |
815 | int mt, mask; | |
816 | ||
dc88a039 | 817 | if (bio == NULL) { |
ed4a9b15 | 818 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); |
0f113f3e | 819 | return NULL; |
dc88a039 | 820 | } |
0f113f3e MC |
821 | mask = type & 0xff; |
822 | do { | |
823 | if (bio->method != NULL) { | |
824 | mt = bio->method->type; | |
825 | ||
826 | if (!mask) { | |
827 | if (mt & type) | |
26a7d938 | 828 | return bio; |
dc88a039 | 829 | } else if (mt == type) { |
26a7d938 | 830 | return bio; |
dc88a039 | 831 | } |
0f113f3e MC |
832 | } |
833 | bio = bio->next_bio; | |
834 | } while (bio != NULL); | |
26a7d938 | 835 | return NULL; |
0f113f3e | 836 | } |
d02b48c6 | 837 | |
cfd3bb17 | 838 | BIO *BIO_next(BIO *b) |
0f113f3e | 839 | { |
398ae823 | 840 | if (b == NULL) |
0f113f3e MC |
841 | return NULL; |
842 | return b->next_bio; | |
843 | } | |
cfd3bb17 | 844 | |
a146ae55 MC |
845 | void BIO_set_next(BIO *b, BIO *next) |
846 | { | |
847 | b->next_bio = next; | |
848 | } | |
849 | ||
6b691a5c | 850 | void BIO_free_all(BIO *bio) |
0f113f3e MC |
851 | { |
852 | BIO *b; | |
853 | int ref; | |
854 | ||
855 | while (bio != NULL) { | |
856 | b = bio; | |
a22d1966 | 857 | CRYPTO_GET_REF(&b->references, &ref); |
0f113f3e MC |
858 | bio = bio->next_bio; |
859 | BIO_free(b); | |
860 | /* Since ref count > 1, don't free anyone else. */ | |
861 | if (ref > 1) | |
862 | break; | |
863 | } | |
864 | } | |
d02b48c6 | 865 | |
6b691a5c | 866 | BIO *BIO_dup_chain(BIO *in) |
0f113f3e MC |
867 | { |
868 | BIO *ret = NULL, *eoc = NULL, *bio, *new_bio; | |
869 | ||
870 | for (bio = in; bio != NULL; bio = bio->next_bio) { | |
871 | if ((new_bio = BIO_new(bio->method)) == NULL) | |
872 | goto err; | |
0800318a | 873 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
0f113f3e | 874 | new_bio->callback = bio->callback; |
0800318a | 875 | #endif |
98e553d2 | 876 | new_bio->callback_ex = bio->callback_ex; |
0f113f3e MC |
877 | new_bio->cb_arg = bio->cb_arg; |
878 | new_bio->init = bio->init; | |
879 | new_bio->shutdown = bio->shutdown; | |
880 | new_bio->flags = bio->flags; | |
881 | ||
882 | /* This will let SSL_s_sock() work with stdin/stdout */ | |
883 | new_bio->num = bio->num; | |
884 | ||
89601c72 | 885 | if (BIO_dup_state(bio, (char *)new_bio) <= 0) { |
0f113f3e MC |
886 | BIO_free(new_bio); |
887 | goto err; | |
888 | } | |
889 | ||
890 | /* copy app data */ | |
891 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data, | |
aec54108 MC |
892 | &bio->ex_data)) { |
893 | BIO_free(new_bio); | |
0f113f3e | 894 | goto err; |
aec54108 | 895 | } |
0f113f3e MC |
896 | |
897 | if (ret == NULL) { | |
898 | eoc = new_bio; | |
899 | ret = eoc; | |
900 | } else { | |
901 | BIO_push(eoc, new_bio); | |
902 | eoc = new_bio; | |
903 | } | |
904 | } | |
26a7d938 | 905 | return ret; |
0f113f3e | 906 | err: |
aec54108 MC |
907 | BIO_free_all(ret); |
908 | ||
26a7d938 | 909 | return NULL; |
0f113f3e | 910 | } |
d02b48c6 | 911 | |
6b691a5c | 912 | void BIO_copy_next_retry(BIO *b) |
0f113f3e MC |
913 | { |
914 | BIO_set_flags(b, BIO_get_retry_flags(b->next_bio)); | |
915 | b->retry_reason = b->next_bio->retry_reason; | |
916 | } | |
d02b48c6 | 917 | |
dd9d233e | 918 | int BIO_set_ex_data(BIO *bio, int idx, void *data) |
0f113f3e | 919 | { |
26a7d938 | 920 | return CRYPTO_set_ex_data(&(bio->ex_data), idx, data); |
0f113f3e | 921 | } |
58964a49 | 922 | |
8cc86b81 | 923 | void *BIO_get_ex_data(const BIO *bio, int idx) |
0f113f3e | 924 | { |
26a7d938 | 925 | return CRYPTO_get_ex_data(&(bio->ex_data), idx); |
0f113f3e | 926 | } |
58964a49 | 927 | |
b8b12aad | 928 | uint64_t BIO_number_read(BIO *bio) |
c3ed3b6e | 929 | { |
0f113f3e MC |
930 | if (bio) |
931 | return bio->num_read; | |
932 | return 0; | |
c3ed3b6e DSH |
933 | } |
934 | ||
b8b12aad | 935 | uint64_t BIO_number_written(BIO *bio) |
c3ed3b6e | 936 | { |
0f113f3e MC |
937 | if (bio) |
938 | return bio->num_write; | |
939 | return 0; | |
c3ed3b6e | 940 | } |
ff234405 | 941 | |
1ee7b8b9 MC |
942 | void bio_free_ex_data(BIO *bio) |
943 | { | |
944 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); | |
945 | } | |
ff234405 MC |
946 | |
947 | void bio_cleanup(void) | |
948 | { | |
949 | #ifndef OPENSSL_NO_SOCK | |
950 | bio_sock_cleanup_int(); | |
951 | CRYPTO_THREAD_lock_free(bio_lookup_lock); | |
952 | bio_lookup_lock = NULL; | |
5a7ad1f0 | 953 | #endif |
a22d1966 | 954 | CRYPTO_FREE_REF(&bio_type_count); |
ff234405 | 955 | } |
e8d0819d | 956 | |
bd07cc1c | 957 | /* Internal variant of the below BIO_wait() not calling ERR_raise(...) */ |
e98c7350 | 958 | static int bio_wait(BIO *bio, time_t max_time, unsigned int nap_milliseconds) |
e8d0819d | 959 | { |
d8c78e5f | 960 | #ifndef OPENSSL_NO_SOCK |
e8d0819d | 961 | int fd; |
d8c78e5f | 962 | #endif |
e98c7350 | 963 | long sec_diff; |
e8d0819d | 964 | |
e98c7350 | 965 | if (max_time == 0) /* no timeout */ |
e8d0819d DDO |
966 | return 1; |
967 | ||
968 | #ifndef OPENSSL_NO_SOCK | |
e98c7350 | 969 | if (BIO_get_fd(bio, &fd) > 0 && fd < FD_SETSIZE) |
e8d0819d DDO |
970 | return BIO_socket_wait(fd, BIO_should_read(bio), max_time); |
971 | #endif | |
e98c7350 | 972 | /* fall back to polling since no sockets are available */ |
e8d0819d | 973 | |
e98c7350 DDO |
974 | sec_diff = (long)(max_time - time(NULL)); /* might overflow */ |
975 | if (sec_diff < 0) | |
976 | return 0; /* clearly timeout */ | |
977 | ||
978 | /* now take a nap at most the given number of milliseconds */ | |
979 | if (sec_diff == 0) { /* we are below the 1 seconds resolution of max_time */ | |
980 | if (nap_milliseconds > 1000) | |
981 | nap_milliseconds = 1000; | |
982 | } else { /* for sec_diff > 0, take min(sec_diff * 1000, nap_milliseconds) */ | |
983 | if ((unsigned long)sec_diff * 1000 < nap_milliseconds) | |
984 | nap_milliseconds = (unsigned int)sec_diff * 1000; | |
e8d0819d | 985 | } |
5139dec2 | 986 | OSSL_sleep(nap_milliseconds); |
e8d0819d DDO |
987 | return 1; |
988 | } | |
989 | ||
e98c7350 | 990 | /*- |
e8d0819d | 991 | * Wait on (typically socket-based) BIO at most until max_time. |
e98c7350 DDO |
992 | * Succeed immediately if max_time == 0. |
993 | * If sockets are not available support polling: succeed after waiting at most | |
994 | * the number of nap_milliseconds in order to avoid a tight busy loop. | |
bd07cc1c | 995 | * Call ERR_raise(ERR_LIB_BIO, ...) on timeout or error. |
e8d0819d DDO |
996 | * Returns -1 on error, 0 on timeout, and 1 on success. |
997 | */ | |
e98c7350 | 998 | int BIO_wait(BIO *bio, time_t max_time, unsigned int nap_milliseconds) |
e8d0819d | 999 | { |
e98c7350 | 1000 | int rv = bio_wait(bio, max_time, nap_milliseconds); |
e8d0819d DDO |
1001 | |
1002 | if (rv <= 0) | |
9311d0c4 RL |
1003 | ERR_raise(ERR_LIB_BIO, |
1004 | rv == 0 ? BIO_R_TRANSFER_TIMEOUT : BIO_R_TRANSFER_ERROR); | |
e8d0819d DDO |
1005 | return rv; |
1006 | } | |
1007 | ||
1008 | /* | |
e98c7350 DDO |
1009 | * Connect via given BIO using BIO_do_connect() until success/timeout/error. |
1010 | * Parameter timeout == 0 means no timeout, < 0 means exactly one try. | |
1011 | * For non-blocking and potentially even non-socket BIOs perform polling with | |
1012 | * the given density: between polls sleep nap_milliseconds using BIO_wait() | |
1013 | * in order to avoid a tight busy loop. | |
e8d0819d DDO |
1014 | * Returns -1 on error, 0 on timeout, and 1 on success. |
1015 | */ | |
e98c7350 | 1016 | int BIO_do_connect_retry(BIO *bio, int timeout, int nap_milliseconds) |
e8d0819d | 1017 | { |
e98c7350 | 1018 | int blocking = timeout <= 0; |
e8d0819d DDO |
1019 | time_t max_time = timeout > 0 ? time(NULL) + timeout : 0; |
1020 | int rv; | |
1021 | ||
1022 | if (bio == NULL) { | |
ed4a9b15 | 1023 | ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER); |
e8d0819d DDO |
1024 | return -1; |
1025 | } | |
1026 | ||
e98c7350 DDO |
1027 | if (nap_milliseconds < 0) |
1028 | nap_milliseconds = 100; | |
1029 | BIO_set_nbio(bio, !blocking); | |
1030 | ||
1031 | retry: | |
afecd85d TM |
1032 | ERR_set_mark(); |
1033 | rv = BIO_do_connect(bio); | |
e98c7350 DDO |
1034 | |
1035 | if (rv <= 0) { /* could be timeout or retryable error or fatal error */ | |
1036 | int err = ERR_peek_last_error(); | |
1037 | int reason = ERR_GET_REASON(err); | |
1038 | int do_retry = BIO_should_retry(bio); /* may be 1 only if !blocking */ | |
1039 | ||
1040 | if (ERR_GET_LIB(err) == ERR_LIB_BIO) { | |
1041 | switch (reason) { | |
1042 | case ERR_R_SYS_LIB: | |
1043 | /* | |
1044 | * likely retryable system error occurred, which may be | |
1045 | * EAGAIN (resource temporarily unavailable) some 40 secs after | |
1046 | * calling getaddrinfo(): Temporary failure in name resolution | |
1047 | * or a premature ETIMEDOUT, some 30 seconds after connect() | |
1048 | */ | |
1049 | case BIO_R_CONNECT_ERROR: | |
1050 | case BIO_R_NBIO_CONNECT_ERROR: | |
1051 | /* some likely retryable connection error occurred */ | |
1052 | (void)BIO_reset(bio); /* often needed to avoid retry failure */ | |
1053 | do_retry = 1; | |
1054 | break; | |
1055 | default: | |
1056 | break; | |
1057 | } | |
1058 | } | |
1059 | if (timeout >= 0 && do_retry) { | |
afecd85d | 1060 | ERR_pop_to_mark(); |
e98c7350 DDO |
1061 | /* will not actually wait if timeout == 0 (i.e., blocking BIO): */ |
1062 | rv = bio_wait(bio, max_time, nap_milliseconds); | |
e8d0819d DDO |
1063 | if (rv > 0) |
1064 | goto retry; | |
9311d0c4 RL |
1065 | ERR_raise(ERR_LIB_BIO, |
1066 | rv == 0 ? BIO_R_CONNECT_TIMEOUT : BIO_R_CONNECT_ERROR); | |
e8d0819d | 1067 | } else { |
afecd85d | 1068 | ERR_clear_last_mark(); |
e8d0819d | 1069 | rv = -1; |
e98c7350 | 1070 | if (err == 0) /* missing error queue entry */ |
dc88a039 DDO |
1071 | /* workaround: general error */ |
1072 | ERR_raise(ERR_LIB_BIO, BIO_R_CONNECT_ERROR); | |
e8d0819d | 1073 | } |
afecd85d TM |
1074 | } else { |
1075 | ERR_clear_last_mark(); | |
e8d0819d DDO |
1076 | } |
1077 | ||
1078 | return rv; | |
1079 | } |