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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. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <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) |
d02b48c6 RE |
67 | { |
68 | BIO *ret=NULL; | |
69 | ||
26a3a48d | 70 | ret=(BIO *)OPENSSL_malloc(sizeof(BIO)); |
d02b48c6 RE |
71 | if (ret == NULL) |
72 | { | |
73 | BIOerr(BIO_F_BIO_NEW,ERR_R_MALLOC_FAILURE); | |
74 | return(NULL); | |
75 | } | |
76 | if (!BIO_set(ret,method)) | |
77 | { | |
26a3a48d | 78 | OPENSSL_free(ret); |
d02b48c6 RE |
79 | ret=NULL; |
80 | } | |
81 | return(ret); | |
82 | } | |
83 | ||
6b691a5c | 84 | int BIO_set(BIO *bio, BIO_METHOD *method) |
d02b48c6 RE |
85 | { |
86 | bio->method=method; | |
87 | bio->callback=NULL; | |
88 | bio->cb_arg=NULL; | |
89 | bio->init=0; | |
90 | bio->shutdown=1; | |
d02b48c6 RE |
91 | bio->flags=0; |
92 | bio->retry_reason=0; | |
58964a49 | 93 | bio->num=0; |
d02b48c6 RE |
94 | bio->ptr=NULL; |
95 | bio->prev_bio=NULL; | |
96 | bio->next_bio=NULL; | |
97 | bio->references=1; | |
98 | bio->num_read=0L; | |
99 | bio->num_write=0L; | |
79aa04ef | 100 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); |
d02b48c6 RE |
101 | if (method->create != NULL) |
102 | if (!method->create(bio)) | |
79aa04ef GT |
103 | { |
104 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, | |
105 | &bio->ex_data); | |
d02b48c6 | 106 | return(0); |
79aa04ef | 107 | } |
d02b48c6 RE |
108 | return(1); |
109 | } | |
110 | ||
6b691a5c | 111 | int BIO_free(BIO *a) |
d02b48c6 RE |
112 | { |
113 | int ret=0,i; | |
114 | ||
115 | if (a == NULL) return(0); | |
116 | ||
117 | i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_BIO); | |
58964a49 RE |
118 | #ifdef REF_PRINT |
119 | REF_PRINT("BIO",a); | |
120 | #endif | |
b1c4fe36 | 121 | if (i > 0) return(1); |
d02b48c6 RE |
122 | #ifdef REF_CHECK |
123 | if (i < 0) | |
124 | { | |
125 | fprintf(stderr,"BIO_free, bad reference count\n"); | |
126 | abort(); | |
127 | } | |
128 | #endif | |
129 | if ((a->callback != NULL) && | |
130 | ((i=(int)a->callback(a,BIO_CB_FREE,NULL,0,0L,1L)) <= 0)) | |
131 | return(i); | |
132 | ||
79aa04ef | 133 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); |
58964a49 | 134 | |
d02b48c6 RE |
135 | if ((a->method == NULL) || (a->method->destroy == NULL)) return(1); |
136 | ret=a->method->destroy(a); | |
26a3a48d | 137 | OPENSSL_free(a); |
d02b48c6 RE |
138 | return(1); |
139 | } | |
140 | ||
371acb22 BL |
141 | void BIO_vfree(BIO *a) |
142 | { BIO_free(a); } | |
143 | ||
61f5b6f3 | 144 | int BIO_read(BIO *b, void *out, int outl) |
d02b48c6 RE |
145 | { |
146 | int i; | |
58964a49 | 147 | long (*cb)(); |
d02b48c6 RE |
148 | |
149 | if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) | |
150 | { | |
151 | BIOerr(BIO_F_BIO_READ,BIO_R_UNSUPPORTED_METHOD); | |
152 | return(-2); | |
153 | } | |
154 | ||
58964a49 RE |
155 | cb=b->callback; |
156 | if ((cb != NULL) && | |
157 | ((i=(int)cb(b,BIO_CB_READ,out,outl,0L,1L)) <= 0)) | |
d02b48c6 RE |
158 | return(i); |
159 | ||
160 | if (!b->init) | |
161 | { | |
df82f5c8 | 162 | BIOerr(BIO_F_BIO_READ,BIO_R_UNINITIALIZED); |
d02b48c6 RE |
163 | return(-2); |
164 | } | |
165 | ||
166 | i=b->method->bread(b,out,outl); | |
dfeab068 | 167 | |
d02b48c6 RE |
168 | if (i > 0) b->num_read+=(unsigned long)i; |
169 | ||
58964a49 RE |
170 | if (cb != NULL) |
171 | i=(int)cb(b,BIO_CB_READ|BIO_CB_RETURN,out,outl, | |
d02b48c6 RE |
172 | 0L,(long)i); |
173 | return(i); | |
174 | } | |
175 | ||
27b78273 | 176 | int BIO_write(BIO *b, const void *in, int inl) |
d02b48c6 RE |
177 | { |
178 | int i; | |
58964a49 RE |
179 | long (*cb)(); |
180 | ||
181 | if (b == NULL) | |
182 | return(0); | |
d02b48c6 | 183 | |
58964a49 RE |
184 | cb=b->callback; |
185 | if ((b->method == NULL) || (b->method->bwrite == NULL)) | |
d02b48c6 RE |
186 | { |
187 | BIOerr(BIO_F_BIO_WRITE,BIO_R_UNSUPPORTED_METHOD); | |
188 | return(-2); | |
189 | } | |
190 | ||
58964a49 RE |
191 | if ((cb != NULL) && |
192 | ((i=(int)cb(b,BIO_CB_WRITE,in,inl,0L,1L)) <= 0)) | |
d02b48c6 RE |
193 | return(i); |
194 | ||
195 | if (!b->init) | |
196 | { | |
df82f5c8 | 197 | BIOerr(BIO_F_BIO_WRITE,BIO_R_UNINITIALIZED); |
d02b48c6 RE |
198 | return(-2); |
199 | } | |
200 | ||
201 | i=b->method->bwrite(b,in,inl); | |
dfeab068 | 202 | |
d02b48c6 RE |
203 | if (i > 0) b->num_write+=(unsigned long)i; |
204 | ||
7d95ff76 | 205 | if (cb != NULL) |
58964a49 | 206 | i=(int)cb(b,BIO_CB_WRITE|BIO_CB_RETURN,in,inl, |
d02b48c6 RE |
207 | 0L,(long)i); |
208 | return(i); | |
209 | } | |
210 | ||
6b691a5c | 211 | int BIO_puts(BIO *b, const char *in) |
d02b48c6 RE |
212 | { |
213 | int i; | |
58964a49 | 214 | long (*cb)(); |
d02b48c6 RE |
215 | |
216 | if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) | |
217 | { | |
218 | BIOerr(BIO_F_BIO_PUTS,BIO_R_UNSUPPORTED_METHOD); | |
219 | return(-2); | |
220 | } | |
221 | ||
58964a49 RE |
222 | cb=b->callback; |
223 | ||
224 | if ((cb != NULL) && | |
225 | ((i=(int)cb(b,BIO_CB_PUTS,in,0,0L,1L)) <= 0)) | |
d02b48c6 RE |
226 | return(i); |
227 | ||
228 | if (!b->init) | |
229 | { | |
df82f5c8 | 230 | BIOerr(BIO_F_BIO_PUTS,BIO_R_UNINITIALIZED); |
d02b48c6 RE |
231 | return(-2); |
232 | } | |
233 | ||
234 | i=b->method->bputs(b,in); | |
235 | ||
7d95ff76 BM |
236 | if (i > 0) b->num_write+=(unsigned long)i; |
237 | ||
58964a49 RE |
238 | if (cb != NULL) |
239 | i=(int)cb(b,BIO_CB_PUTS|BIO_CB_RETURN,in,0, | |
d02b48c6 RE |
240 | 0L,(long)i); |
241 | return(i); | |
242 | } | |
243 | ||
6b691a5c | 244 | int BIO_gets(BIO *b, char *in, int inl) |
d02b48c6 RE |
245 | { |
246 | int i; | |
58964a49 | 247 | long (*cb)(); |
d02b48c6 RE |
248 | |
249 | if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) | |
250 | { | |
251 | BIOerr(BIO_F_BIO_GETS,BIO_R_UNSUPPORTED_METHOD); | |
252 | return(-2); | |
253 | } | |
254 | ||
58964a49 RE |
255 | cb=b->callback; |
256 | ||
257 | if ((cb != NULL) && | |
258 | ((i=(int)cb(b,BIO_CB_GETS,in,inl,0L,1L)) <= 0)) | |
d02b48c6 RE |
259 | return(i); |
260 | ||
261 | if (!b->init) | |
262 | { | |
df82f5c8 | 263 | BIOerr(BIO_F_BIO_GETS,BIO_R_UNINITIALIZED); |
d02b48c6 RE |
264 | return(-2); |
265 | } | |
266 | ||
267 | i=b->method->bgets(b,in,inl); | |
268 | ||
58964a49 RE |
269 | if (cb != NULL) |
270 | i=(int)cb(b,BIO_CB_GETS|BIO_CB_RETURN,in,inl, | |
d02b48c6 RE |
271 | 0L,(long)i); |
272 | return(i); | |
273 | } | |
274 | ||
54a656ef BL |
275 | int BIO_indent(BIO *b,int indent,int max) |
276 | { | |
277 | if(indent < 0) | |
278 | indent=0; | |
279 | if(indent > max) | |
280 | indent=max; | |
281 | while(indent--) | |
282 | if(BIO_puts(b," ") != 1) | |
283 | return 0; | |
284 | return 1; | |
285 | } | |
286 | ||
6b691a5c | 287 | long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) |
d02b48c6 RE |
288 | { |
289 | int i; | |
290 | ||
291 | i=iarg; | |
292 | return(BIO_ctrl(b,cmd,larg,(char *)&i)); | |
293 | } | |
294 | ||
6b691a5c | 295 | char *BIO_ptr_ctrl(BIO *b, int cmd, long larg) |
58964a49 RE |
296 | { |
297 | char *p=NULL; | |
298 | ||
299 | if (BIO_ctrl(b,cmd,larg,(char *)&p) <= 0) | |
300 | return(NULL); | |
301 | else | |
302 | return(p); | |
303 | } | |
304 | ||
95d29597 | 305 | long BIO_ctrl(BIO *b, int cmd, long larg, void *parg) |
d02b48c6 RE |
306 | { |
307 | long ret; | |
58964a49 | 308 | long (*cb)(); |
d02b48c6 RE |
309 | |
310 | if (b == NULL) return(0); | |
311 | ||
312 | if ((b->method == NULL) || (b->method->ctrl == NULL)) | |
313 | { | |
314 | BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD); | |
315 | return(-2); | |
316 | } | |
317 | ||
58964a49 RE |
318 | cb=b->callback; |
319 | ||
320 | if ((cb != NULL) && | |
321 | ((ret=cb(b,BIO_CB_CTRL,parg,cmd,larg,1L)) <= 0)) | |
d02b48c6 RE |
322 | return(ret); |
323 | ||
324 | ret=b->method->ctrl(b,cmd,larg,parg); | |
325 | ||
58964a49 RE |
326 | if (cb != NULL) |
327 | ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,parg,cmd, | |
d02b48c6 RE |
328 | larg,ret); |
329 | return(ret); | |
330 | } | |
331 | ||
0e1c0612 | 332 | long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long)) |
d3442bc7 RL |
333 | { |
334 | long ret; | |
335 | long (*cb)(); | |
336 | ||
337 | if (b == NULL) return(0); | |
338 | ||
339 | if ((b->method == NULL) || (b->method->callback_ctrl == NULL)) | |
340 | { | |
341 | BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD); | |
342 | return(-2); | |
343 | } | |
344 | ||
345 | cb=b->callback; | |
346 | ||
347 | if ((cb != NULL) && | |
348 | ((ret=cb(b,BIO_CB_CTRL,(void *)&fp,cmd,0,1L)) <= 0)) | |
349 | return(ret); | |
350 | ||
351 | ret=b->method->callback_ctrl(b,cmd,fp); | |
352 | ||
353 | if (cb != NULL) | |
354 | ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,(void *)&fp,cmd, | |
355 | 0,ret); | |
356 | return(ret); | |
357 | } | |
358 | ||
95d29597 BM |
359 | /* It is unfortunate to duplicate in functions what the BIO_(w)pending macros |
360 | * do; but those macros have inappropriate return type, and for interfacing | |
361 | * from other programming languages, C macros aren't much of a help anyway. */ | |
362 | size_t BIO_ctrl_pending(BIO *bio) | |
d3442bc7 | 363 | { |
95d29597 BM |
364 | return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL); |
365 | } | |
366 | ||
367 | size_t BIO_ctrl_wpending(BIO *bio) | |
d3442bc7 | 368 | { |
95d29597 BM |
369 | return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL); |
370 | } | |
371 | ||
372 | ||
d02b48c6 | 373 | /* put the 'bio' on the end of b's list of operators */ |
6b691a5c | 374 | BIO *BIO_push(BIO *b, BIO *bio) |
d02b48c6 RE |
375 | { |
376 | BIO *lb; | |
377 | ||
378 | if (b == NULL) return(bio); | |
379 | lb=b; | |
380 | while (lb->next_bio != NULL) | |
381 | lb=lb->next_bio; | |
382 | lb->next_bio=bio; | |
383 | if (bio != NULL) | |
384 | bio->prev_bio=lb; | |
58964a49 | 385 | /* called to do internal processing */ |
d02b48c6 RE |
386 | BIO_ctrl(b,BIO_CTRL_PUSH,0,NULL); |
387 | return(b); | |
388 | } | |
389 | ||
390 | /* Remove the first and return the rest */ | |
6b691a5c | 391 | BIO *BIO_pop(BIO *b) |
d02b48c6 RE |
392 | { |
393 | BIO *ret; | |
394 | ||
395 | if (b == NULL) return(NULL); | |
396 | ret=b->next_bio; | |
397 | ||
398 | if (b->prev_bio != NULL) | |
399 | b->prev_bio->next_bio=b->next_bio; | |
400 | if (b->next_bio != NULL) | |
401 | b->next_bio->prev_bio=b->prev_bio; | |
402 | ||
403 | b->next_bio=NULL; | |
404 | b->prev_bio=NULL; | |
405 | BIO_ctrl(b,BIO_CTRL_POP,0,NULL); | |
406 | return(ret); | |
407 | } | |
408 | ||
6b691a5c | 409 | BIO *BIO_get_retry_BIO(BIO *bio, int *reason) |
d02b48c6 RE |
410 | { |
411 | BIO *b,*last; | |
412 | ||
413 | b=last=bio; | |
414 | for (;;) | |
415 | { | |
416 | if (!BIO_should_retry(b)) break; | |
417 | last=b; | |
418 | b=b->next_bio; | |
419 | if (b == NULL) break; | |
420 | } | |
421 | if (reason != NULL) *reason=last->retry_reason; | |
422 | return(last); | |
423 | } | |
424 | ||
6b691a5c | 425 | int BIO_get_retry_reason(BIO *bio) |
d02b48c6 RE |
426 | { |
427 | return(bio->retry_reason); | |
428 | } | |
429 | ||
6b691a5c | 430 | BIO *BIO_find_type(BIO *bio, int type) |
d02b48c6 RE |
431 | { |
432 | int mt,mask; | |
433 | ||
f50c11ca | 434 | if(!bio) return NULL; |
d02b48c6 RE |
435 | mask=type&0xff; |
436 | do { | |
437 | if (bio->method != NULL) | |
438 | { | |
439 | mt=bio->method->type; | |
440 | ||
441 | if (!mask) | |
442 | { | |
443 | if (mt & type) return(bio); | |
444 | } | |
445 | else if (mt == type) | |
446 | return(bio); | |
447 | } | |
448 | bio=bio->next_bio; | |
449 | } while (bio != NULL); | |
450 | return(NULL); | |
451 | } | |
452 | ||
cfd3bb17 DSH |
453 | BIO *BIO_next(BIO *b) |
454 | { | |
455 | if(!b) return NULL; | |
456 | return b->next_bio; | |
457 | } | |
458 | ||
6b691a5c | 459 | void BIO_free_all(BIO *bio) |
d02b48c6 RE |
460 | { |
461 | BIO *b; | |
462 | int ref; | |
463 | ||
464 | while (bio != NULL) | |
465 | { | |
466 | b=bio; | |
467 | ref=b->references; | |
468 | bio=bio->next_bio; | |
469 | BIO_free(b); | |
470 | /* Since ref count > 1, don't free anyone else. */ | |
471 | if (ref > 1) break; | |
472 | } | |
473 | } | |
474 | ||
6b691a5c | 475 | BIO *BIO_dup_chain(BIO *in) |
d02b48c6 RE |
476 | { |
477 | BIO *ret=NULL,*eoc=NULL,*bio,*new; | |
478 | ||
479 | for (bio=in; bio != NULL; bio=bio->next_bio) | |
480 | { | |
481 | if ((new=BIO_new(bio->method)) == NULL) goto err; | |
482 | new->callback=bio->callback; | |
483 | new->cb_arg=bio->cb_arg; | |
484 | new->init=bio->init; | |
485 | new->shutdown=bio->shutdown; | |
486 | new->flags=bio->flags; | |
487 | ||
488 | /* This will let SSL_s_sock() work with stdin/stdout */ | |
489 | new->num=bio->num; | |
490 | ||
491 | if (!BIO_dup_state(bio,(char *)new)) | |
492 | { | |
493 | BIO_free(new); | |
494 | goto err; | |
495 | } | |
58964a49 | 496 | |
b1c4fe36 | 497 | /* copy app data */ |
79aa04ef GT |
498 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new->ex_data, |
499 | &bio->ex_data)) | |
b1c4fe36 | 500 | goto err; |
58964a49 | 501 | |
d02b48c6 RE |
502 | if (ret == NULL) |
503 | { | |
504 | eoc=new; | |
505 | ret=eoc; | |
506 | } | |
507 | else | |
508 | { | |
509 | BIO_push(eoc,new); | |
510 | eoc=new; | |
511 | } | |
512 | } | |
513 | return(ret); | |
514 | err: | |
515 | if (ret != NULL) | |
516 | BIO_free(ret); | |
517 | return(NULL); | |
518 | } | |
519 | ||
6b691a5c | 520 | void BIO_copy_next_retry(BIO *b) |
d02b48c6 RE |
521 | { |
522 | BIO_set_flags(b,BIO_get_retry_flags(b->next_bio)); | |
523 | b->retry_reason=b->next_bio->retry_reason; | |
524 | } | |
525 | ||
dd9d233e DSH |
526 | int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, |
527 | CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) | |
b1c4fe36 | 528 | { |
79aa04ef GT |
529 | return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, argl, argp, |
530 | new_func, dup_func, free_func); | |
b1c4fe36 | 531 | } |
58964a49 | 532 | |
dd9d233e | 533 | int BIO_set_ex_data(BIO *bio, int idx, void *data) |
58964a49 RE |
534 | { |
535 | return(CRYPTO_set_ex_data(&(bio->ex_data),idx,data)); | |
536 | } | |
537 | ||
dd9d233e | 538 | void *BIO_get_ex_data(BIO *bio, int idx) |
58964a49 RE |
539 | { |
540 | return(CRYPTO_get_ex_data(&(bio->ex_data),idx)); | |
541 | } | |
542 | ||
c3ed3b6e DSH |
543 | unsigned long BIO_number_read(BIO *bio) |
544 | { | |
545 | if(bio) return bio->num_read; | |
546 | return 0; | |
547 | } | |
548 | ||
549 | unsigned long BIO_number_written(BIO *bio) | |
550 | { | |
551 | if(bio) return bio->num_write; | |
552 | return 0; | |
553 | } | |
371acb22 BL |
554 | |
555 | IMPLEMENT_STACK_OF(BIO) |