155714Skris/* crypto/bio/bio_lib.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8280304Sjkim * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15280304Sjkim * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22280304Sjkim * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37280304Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40280304Sjkim * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52280304Sjkim * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <errno.h> 6155714Skris#include <openssl/crypto.h> 6255714Skris#include "cryptlib.h" 6355714Skris#include <openssl/bio.h> 6455714Skris#include <openssl/stack.h> 6555714Skris 6655714SkrisBIO *BIO_new(BIO_METHOD *method) 67280304Sjkim{ 68280304Sjkim BIO *ret = NULL; 6955714Skris 70280304Sjkim ret = (BIO *)OPENSSL_malloc(sizeof(BIO)); 71280304Sjkim if (ret == NULL) { 72280304Sjkim BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); 73280304Sjkim return (NULL); 74280304Sjkim } 75280304Sjkim if (!BIO_set(ret, method)) { 76280304Sjkim OPENSSL_free(ret); 77280304Sjkim ret = NULL; 78280304Sjkim } 79280304Sjkim return (ret); 80280304Sjkim} 8155714Skris 8255714Skrisint BIO_set(BIO *bio, BIO_METHOD *method) 83280304Sjkim{ 84280304Sjkim bio->method = method; 85280304Sjkim bio->callback = NULL; 86280304Sjkim bio->cb_arg = NULL; 87280304Sjkim bio->init = 0; 88280304Sjkim bio->shutdown = 1; 89280304Sjkim bio->flags = 0; 90280304Sjkim bio->retry_reason = 0; 91280304Sjkim bio->num = 0; 92280304Sjkim bio->ptr = NULL; 93280304Sjkim bio->prev_bio = NULL; 94280304Sjkim bio->next_bio = NULL; 95280304Sjkim bio->references = 1; 96280304Sjkim bio->num_read = 0L; 97280304Sjkim bio->num_write = 0L; 98280304Sjkim CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); 99280304Sjkim if (method->create != NULL) 100280304Sjkim if (!method->create(bio)) { 101280304Sjkim CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); 102280304Sjkim return (0); 103280304Sjkim } 104280304Sjkim return (1); 105280304Sjkim} 10655714Skris 10755714Skrisint BIO_free(BIO *a) 108280304Sjkim{ 109280304Sjkim int i; 11055714Skris 111280304Sjkim if (a == NULL) 112280304Sjkim return (0); 11355714Skris 114280304Sjkim i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_BIO); 11555714Skris#ifdef REF_PRINT 116280304Sjkim REF_PRINT("BIO", a); 11755714Skris#endif 118280304Sjkim if (i > 0) 119280304Sjkim return (1); 12055714Skris#ifdef REF_CHECK 121280304Sjkim if (i < 0) { 122280304Sjkim fprintf(stderr, "BIO_free, bad reference count\n"); 123280304Sjkim abort(); 124280304Sjkim } 12555714Skris#endif 126280304Sjkim if ((a->callback != NULL) && 127280304Sjkim ((i = (int)a->callback(a, BIO_CB_FREE, NULL, 0, 0L, 1L)) <= 0)) 128280304Sjkim return (i); 12955714Skris 130280304Sjkim CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); 13155714Skris 132280304Sjkim if ((a->method != NULL) && (a->method->destroy != NULL)) 133280304Sjkim a->method->destroy(a); 134280304Sjkim OPENSSL_free(a); 135280304Sjkim return (1); 136280304Sjkim} 13755714Skris 13868651Skrisvoid BIO_vfree(BIO *a) 139280304Sjkim{ 140280304Sjkim BIO_free(a); 141280304Sjkim} 14268651Skris 143167612Ssimonvoid BIO_clear_flags(BIO *b, int flags) 144280304Sjkim{ 145280304Sjkim b->flags &= ~flags; 146280304Sjkim} 147167612Ssimon 148280304Sjkimint BIO_test_flags(const BIO *b, int flags) 149280304Sjkim{ 150280304Sjkim return (b->flags & flags); 151280304Sjkim} 152167612Ssimon 153280304Sjkimvoid BIO_set_flags(BIO *b, int flags) 154280304Sjkim{ 155280304Sjkim b->flags |= flags; 156280304Sjkim} 157167612Ssimon 158280304Sjkimlong (*BIO_get_callback(const BIO *b)) (struct bio_st *, int, const char *, 159280304Sjkim int, long, long) { 160280304Sjkim return b->callback; 161280304Sjkim} 162167612Ssimon 163280304Sjkimvoid BIO_set_callback(BIO *b, 164280304Sjkim long (*cb) (struct bio_st *, int, const char *, int, 165280304Sjkim long, long)) 166280304Sjkim{ 167280304Sjkim b->callback = cb; 168280304Sjkim} 169167612Ssimon 170167612Ssimonvoid BIO_set_callback_arg(BIO *b, char *arg) 171280304Sjkim{ 172280304Sjkim b->cb_arg = arg; 173280304Sjkim} 174167612Ssimon 175280304Sjkimchar *BIO_get_callback_arg(const BIO *b) 176280304Sjkim{ 177280304Sjkim return b->cb_arg; 178280304Sjkim} 179167612Ssimon 180280304Sjkimconst char *BIO_method_name(const BIO *b) 181280304Sjkim{ 182280304Sjkim return b->method->name; 183280304Sjkim} 184167612Ssimon 185167612Ssimonint BIO_method_type(const BIO *b) 186280304Sjkim{ 187280304Sjkim return b->method->type; 188280304Sjkim} 189167612Ssimon 19055714Skrisint BIO_read(BIO *b, void *out, int outl) 191280304Sjkim{ 192280304Sjkim int i; 193280304Sjkim long (*cb) (BIO *, int, const char *, int, long, long); 19455714Skris 195280304Sjkim if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) { 196280304Sjkim BIOerr(BIO_F_BIO_READ, BIO_R_UNSUPPORTED_METHOD); 197280304Sjkim return (-2); 198280304Sjkim } 19955714Skris 200280304Sjkim cb = b->callback; 201280304Sjkim if ((cb != NULL) && 202280304Sjkim ((i = (int)cb(b, BIO_CB_READ, out, outl, 0L, 1L)) <= 0)) 203280304Sjkim return (i); 20455714Skris 205280304Sjkim if (!b->init) { 206280304Sjkim BIOerr(BIO_F_BIO_READ, BIO_R_UNINITIALIZED); 207280304Sjkim return (-2); 208280304Sjkim } 20955714Skris 210280304Sjkim i = b->method->bread(b, out, outl); 21155714Skris 212280304Sjkim if (i > 0) 213280304Sjkim b->num_read += (unsigned long)i; 21455714Skris 215280304Sjkim if (cb != NULL) 216280304Sjkim i = (int)cb(b, BIO_CB_READ | BIO_CB_RETURN, out, outl, 0L, (long)i); 217280304Sjkim return (i); 218280304Sjkim} 21955714Skris 22059191Skrisint BIO_write(BIO *b, const void *in, int inl) 221280304Sjkim{ 222280304Sjkim int i; 223280304Sjkim long (*cb) (BIO *, int, const char *, int, long, long); 22455714Skris 225280304Sjkim if (b == NULL) 226280304Sjkim return (0); 22755714Skris 228280304Sjkim cb = b->callback; 229280304Sjkim if ((b->method == NULL) || (b->method->bwrite == NULL)) { 230280304Sjkim BIOerr(BIO_F_BIO_WRITE, BIO_R_UNSUPPORTED_METHOD); 231280304Sjkim return (-2); 232280304Sjkim } 23355714Skris 234280304Sjkim if ((cb != NULL) && 235280304Sjkim ((i = (int)cb(b, BIO_CB_WRITE, in, inl, 0L, 1L)) <= 0)) 236280304Sjkim return (i); 23755714Skris 238280304Sjkim if (!b->init) { 239280304Sjkim BIOerr(BIO_F_BIO_WRITE, BIO_R_UNINITIALIZED); 240280304Sjkim return (-2); 241280304Sjkim } 24255714Skris 243280304Sjkim i = b->method->bwrite(b, in, inl); 24455714Skris 245280304Sjkim if (i > 0) 246280304Sjkim b->num_write += (unsigned long)i; 24755714Skris 248280304Sjkim if (cb != NULL) 249280304Sjkim i = (int)cb(b, BIO_CB_WRITE | BIO_CB_RETURN, in, inl, 0L, (long)i); 250280304Sjkim return (i); 251280304Sjkim} 25255714Skris 25355714Skrisint BIO_puts(BIO *b, const char *in) 254280304Sjkim{ 255280304Sjkim int i; 256280304Sjkim long (*cb) (BIO *, int, const char *, int, long, long); 25755714Skris 258280304Sjkim if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) { 259280304Sjkim BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD); 260280304Sjkim return (-2); 261280304Sjkim } 26255714Skris 263280304Sjkim cb = b->callback; 26455714Skris 265280304Sjkim if ((cb != NULL) && ((i = (int)cb(b, BIO_CB_PUTS, in, 0, 0L, 1L)) <= 0)) 266280304Sjkim return (i); 26755714Skris 268280304Sjkim if (!b->init) { 269280304Sjkim BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED); 270280304Sjkim return (-2); 271280304Sjkim } 27255714Skris 273280304Sjkim i = b->method->bputs(b, in); 27455714Skris 275280304Sjkim if (i > 0) 276280304Sjkim b->num_write += (unsigned long)i; 27768651Skris 278280304Sjkim if (cb != NULL) 279280304Sjkim i = (int)cb(b, BIO_CB_PUTS | BIO_CB_RETURN, in, 0, 0L, (long)i); 280280304Sjkim return (i); 281280304Sjkim} 28255714Skris 28355714Skrisint BIO_gets(BIO *b, char *in, int inl) 284280304Sjkim{ 285280304Sjkim int i; 286280304Sjkim long (*cb) (BIO *, int, const char *, int, long, long); 28755714Skris 288280304Sjkim if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) { 289280304Sjkim BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD); 290280304Sjkim return (-2); 291280304Sjkim } 29255714Skris 293280304Sjkim cb = b->callback; 29455714Skris 295280304Sjkim if ((cb != NULL) && ((i = (int)cb(b, BIO_CB_GETS, in, inl, 0L, 1L)) <= 0)) 296280304Sjkim return (i); 29755714Skris 298280304Sjkim if (!b->init) { 299280304Sjkim BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED); 300280304Sjkim return (-2); 301280304Sjkim } 30255714Skris 303280304Sjkim i = b->method->bgets(b, in, inl); 30455714Skris 305280304Sjkim if (cb != NULL) 306280304Sjkim i = (int)cb(b, BIO_CB_GETS | BIO_CB_RETURN, in, inl, 0L, (long)i); 307280304Sjkim return (i); 308280304Sjkim} 30955714Skris 310280304Sjkimint BIO_indent(BIO *b, int indent, int max) 311280304Sjkim{ 312280304Sjkim if (indent < 0) 313280304Sjkim indent = 0; 314280304Sjkim if (indent > max) 315280304Sjkim indent = max; 316280304Sjkim while (indent--) 317280304Sjkim if (BIO_puts(b, " ") != 1) 318280304Sjkim return 0; 319280304Sjkim return 1; 320280304Sjkim} 321109998Smarkm 32255714Skrislong BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) 323280304Sjkim{ 324280304Sjkim int i; 32555714Skris 326280304Sjkim i = iarg; 327280304Sjkim return (BIO_ctrl(b, cmd, larg, (char *)&i)); 328280304Sjkim} 32955714Skris 33055714Skrischar *BIO_ptr_ctrl(BIO *b, int cmd, long larg) 331280304Sjkim{ 332280304Sjkim char *p = NULL; 33355714Skris 334280304Sjkim if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0) 335280304Sjkim return (NULL); 336280304Sjkim else 337280304Sjkim return (p); 338280304Sjkim} 33955714Skris 34055714Skrislong BIO_ctrl(BIO *b, int cmd, long larg, void *parg) 341280304Sjkim{ 342280304Sjkim long ret; 343280304Sjkim long (*cb) (BIO *, int, const char *, int, long, long); 34455714Skris 345280304Sjkim if (b == NULL) 346280304Sjkim return (0); 34755714Skris 348280304Sjkim if ((b->method == NULL) || (b->method->ctrl == NULL)) { 349280304Sjkim BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD); 350280304Sjkim return (-2); 351280304Sjkim } 35255714Skris 353280304Sjkim cb = b->callback; 35455714Skris 355280304Sjkim if ((cb != NULL) && 356280304Sjkim ((ret = cb(b, BIO_CB_CTRL, parg, cmd, larg, 1L)) <= 0)) 357280304Sjkim return (ret); 35855714Skris 359280304Sjkim ret = b->method->ctrl(b, cmd, larg, parg); 36055714Skris 361280304Sjkim if (cb != NULL) 362280304Sjkim ret = cb(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, cmd, larg, ret); 363280304Sjkim return (ret); 364280304Sjkim} 36555714Skris 366280304Sjkimlong BIO_callback_ctrl(BIO *b, int cmd, 367280304Sjkim void (*fp) (struct bio_st *, int, const char *, int, 368280304Sjkim long, long)) 369280304Sjkim{ 370280304Sjkim long ret; 371280304Sjkim long (*cb) (BIO *, int, const char *, int, long, long); 37259191Skris 373280304Sjkim if (b == NULL) 374280304Sjkim return (0); 37559191Skris 376280304Sjkim if ((b->method == NULL) || (b->method->callback_ctrl == NULL)) { 377280304Sjkim BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD); 378280304Sjkim return (-2); 379280304Sjkim } 38059191Skris 381280304Sjkim cb = b->callback; 38259191Skris 383280304Sjkim if ((cb != NULL) && 384280304Sjkim ((ret = cb(b, BIO_CB_CTRL, (void *)&fp, cmd, 0, 1L)) <= 0)) 385280304Sjkim return (ret); 38659191Skris 387280304Sjkim ret = b->method->callback_ctrl(b, cmd, fp); 38859191Skris 389280304Sjkim if (cb != NULL) 390280304Sjkim ret = cb(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, cmd, 0, ret); 391280304Sjkim return (ret); 392280304Sjkim} 39359191Skris 394280304Sjkim/* 395280304Sjkim * It is unfortunate to duplicate in functions what the BIO_(w)pending macros 39655714Skris * do; but those macros have inappropriate return type, and for interfacing 397280304Sjkim * from other programming languages, C macros aren't much of a help anyway. 398280304Sjkim */ 39955714Skrissize_t BIO_ctrl_pending(BIO *bio) 400280304Sjkim{ 401280304Sjkim return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL); 402280304Sjkim} 40355714Skris 40455714Skrissize_t BIO_ctrl_wpending(BIO *bio) 405280304Sjkim{ 406280304Sjkim return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL); 407280304Sjkim} 40855714Skris 40955714Skris/* put the 'bio' on the end of b's list of operators */ 41055714SkrisBIO *BIO_push(BIO *b, BIO *bio) 411280304Sjkim{ 412280304Sjkim BIO *lb; 41355714Skris 414280304Sjkim if (b == NULL) 415280304Sjkim return (bio); 416280304Sjkim lb = b; 417280304Sjkim while (lb->next_bio != NULL) 418280304Sjkim lb = lb->next_bio; 419280304Sjkim lb->next_bio = bio; 420280304Sjkim if (bio != NULL) 421280304Sjkim bio->prev_bio = lb; 422280304Sjkim /* called to do internal processing */ 423280304Sjkim BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb); 424280304Sjkim return (b); 425280304Sjkim} 42655714Skris 42755714Skris/* Remove the first and return the rest */ 42855714SkrisBIO *BIO_pop(BIO *b) 429280304Sjkim{ 430280304Sjkim BIO *ret; 43155714Skris 432280304Sjkim if (b == NULL) 433280304Sjkim return (NULL); 434280304Sjkim ret = b->next_bio; 43555714Skris 436280304Sjkim BIO_ctrl(b, BIO_CTRL_POP, 0, b); 437111147Snectar 438280304Sjkim if (b->prev_bio != NULL) 439280304Sjkim b->prev_bio->next_bio = b->next_bio; 440280304Sjkim if (b->next_bio != NULL) 441280304Sjkim b->next_bio->prev_bio = b->prev_bio; 44255714Skris 443280304Sjkim b->next_bio = NULL; 444280304Sjkim b->prev_bio = NULL; 445280304Sjkim return (ret); 446280304Sjkim} 44755714Skris 44855714SkrisBIO *BIO_get_retry_BIO(BIO *bio, int *reason) 449280304Sjkim{ 450280304Sjkim BIO *b, *last; 45155714Skris 452280304Sjkim b = last = bio; 453280304Sjkim for (;;) { 454280304Sjkim if (!BIO_should_retry(b)) 455280304Sjkim break; 456280304Sjkim last = b; 457280304Sjkim b = b->next_bio; 458280304Sjkim if (b == NULL) 459280304Sjkim break; 460280304Sjkim } 461280304Sjkim if (reason != NULL) 462280304Sjkim *reason = last->retry_reason; 463280304Sjkim return (last); 464280304Sjkim} 46555714Skris 46655714Skrisint BIO_get_retry_reason(BIO *bio) 467280304Sjkim{ 468280304Sjkim return (bio->retry_reason); 469280304Sjkim} 47055714Skris 47155714SkrisBIO *BIO_find_type(BIO *bio, int type) 472280304Sjkim{ 473280304Sjkim int mt, mask; 47455714Skris 475280304Sjkim if (!bio) 476280304Sjkim return NULL; 477280304Sjkim mask = type & 0xff; 478280304Sjkim do { 479280304Sjkim if (bio->method != NULL) { 480280304Sjkim mt = bio->method->type; 48155714Skris 482280304Sjkim if (!mask) { 483280304Sjkim if (mt & type) 484280304Sjkim return (bio); 485280304Sjkim } else if (mt == type) 486280304Sjkim return (bio); 487280304Sjkim } 488280304Sjkim bio = bio->next_bio; 489280304Sjkim } while (bio != NULL); 490280304Sjkim return (NULL); 491280304Sjkim} 49255714Skris 49368651SkrisBIO *BIO_next(BIO *b) 494280304Sjkim{ 495280304Sjkim if (!b) 496280304Sjkim return NULL; 497280304Sjkim return b->next_bio; 498280304Sjkim} 49968651Skris 50055714Skrisvoid BIO_free_all(BIO *bio) 501280304Sjkim{ 502280304Sjkim BIO *b; 503280304Sjkim int ref; 50455714Skris 505280304Sjkim while (bio != NULL) { 506280304Sjkim b = bio; 507280304Sjkim ref = b->references; 508280304Sjkim bio = bio->next_bio; 509280304Sjkim BIO_free(b); 510280304Sjkim /* Since ref count > 1, don't free anyone else. */ 511280304Sjkim if (ref > 1) 512280304Sjkim break; 513280304Sjkim } 514280304Sjkim} 51555714Skris 51655714SkrisBIO *BIO_dup_chain(BIO *in) 517280304Sjkim{ 518280304Sjkim BIO *ret = NULL, *eoc = NULL, *bio, *new_bio; 51955714Skris 520280304Sjkim for (bio = in; bio != NULL; bio = bio->next_bio) { 521280304Sjkim if ((new_bio = BIO_new(bio->method)) == NULL) 522280304Sjkim goto err; 523280304Sjkim new_bio->callback = bio->callback; 524280304Sjkim new_bio->cb_arg = bio->cb_arg; 525280304Sjkim new_bio->init = bio->init; 526280304Sjkim new_bio->shutdown = bio->shutdown; 527280304Sjkim new_bio->flags = bio->flags; 52855714Skris 529280304Sjkim /* This will let SSL_s_sock() work with stdin/stdout */ 530280304Sjkim new_bio->num = bio->num; 53155714Skris 532280304Sjkim if (!BIO_dup_state(bio, (char *)new_bio)) { 533280304Sjkim BIO_free(new_bio); 534280304Sjkim goto err; 535280304Sjkim } 53655714Skris 537280304Sjkim /* copy app data */ 538280304Sjkim if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data, 539284285Sjkim &bio->ex_data)) { 540284285Sjkim BIO_free(new_bio); 541280304Sjkim goto err; 542284285Sjkim } 54355714Skris 544280304Sjkim if (ret == NULL) { 545280304Sjkim eoc = new_bio; 546280304Sjkim ret = eoc; 547280304Sjkim } else { 548280304Sjkim BIO_push(eoc, new_bio); 549280304Sjkim eoc = new_bio; 550280304Sjkim } 551280304Sjkim } 552280304Sjkim return (ret); 553280304Sjkim err: 554284285Sjkim BIO_free_all(ret); 555284285Sjkim 556280304Sjkim return (NULL); 557280304Sjkim} 55855714Skris 55955714Skrisvoid BIO_copy_next_retry(BIO *b) 560280304Sjkim{ 561280304Sjkim BIO_set_flags(b, BIO_get_retry_flags(b->next_bio)); 562280304Sjkim b->retry_reason = b->next_bio->retry_reason; 563280304Sjkim} 56455714Skris 56559191Skrisint BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 566280304Sjkim CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 567280304Sjkim{ 568280304Sjkim return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, argl, argp, 569280304Sjkim new_func, dup_func, free_func); 570280304Sjkim} 57155714Skris 57259191Skrisint BIO_set_ex_data(BIO *bio, int idx, void *data) 573280304Sjkim{ 574280304Sjkim return (CRYPTO_set_ex_data(&(bio->ex_data), idx, data)); 575280304Sjkim} 57655714Skris 57759191Skrisvoid *BIO_get_ex_data(BIO *bio, int idx) 578280304Sjkim{ 579280304Sjkim return (CRYPTO_get_ex_data(&(bio->ex_data), idx)); 580280304Sjkim} 58155714Skris 58259191Skrisunsigned long BIO_number_read(BIO *bio) 58359191Skris{ 584280304Sjkim if (bio) 585280304Sjkim return bio->num_read; 586280304Sjkim return 0; 58759191Skris} 58859191Skris 58959191Skrisunsigned long BIO_number_written(BIO *bio) 59059191Skris{ 591280304Sjkim if (bio) 592280304Sjkim return bio->num_write; 593280304Sjkim return 0; 59459191Skris} 59568651Skris 59668651SkrisIMPLEMENT_STACK_OF(BIO) 597