X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fbio%2Fbio_lib.c;h=62392c3a52157f7e2b562c9d54ca35e4de689d71;hp=ef68dbb774a967202586e1451a3c495e87addf9e;hb=5a7ad1f08bfccbdad0f20920f9c284bba036fb70;hpb=417be660e1cd21a2ee085569ff98b0c4249b5416 diff --git a/crypto/bio/bio_lib.c b/crypto/bio/bio_lib.c index ef68dbb774..62392c3a52 100644 --- a/crypto/bio/bio_lib.c +++ b/crypto/bio/bio_lib.c @@ -1,105 +1,53 @@ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include #include #include +#include "bio_lcl.h" #include "internal/cryptlib.h" -#include -#include -BIO *BIO_new(BIO_METHOD *method) +BIO *BIO_new(const BIO_METHOD *method) { - BIO *ret = OPENSSL_malloc(sizeof(*ret)); + BIO *bio = OPENSSL_zalloc(sizeof(*bio)); - if (ret == NULL) { + if (bio == NULL) { BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); return (NULL); } - if (!BIO_set(ret, method)) { - OPENSSL_free(ret); - ret = NULL; - } - return (ret); -} -int BIO_set(BIO *bio, BIO_METHOD *method) -{ bio->method = method; - bio->callback = NULL; - bio->cb_arg = NULL; - bio->init = 0; bio->shutdown = 1; - bio->flags = 0; - bio->retry_reason = 0; - bio->num = 0; - bio->ptr = NULL; - bio->prev_bio = NULL; - bio->next_bio = NULL; bio->references = 1; - bio->num_read = 0L; - bio->num_write = 0L; - CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); - if (method->create != NULL) - if (!method->create(bio)) { - CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); - return (0); - } - return (1); + + if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data)) + goto err; + + bio->lock = CRYPTO_THREAD_lock_new(); + if (bio->lock == NULL) { + BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE); + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); + goto err; + } + + if (method->create != NULL && !method->create(bio)) { + BIOerr(BIO_F_BIO_NEW, ERR_R_INIT_FAIL); + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); + CRYPTO_THREAD_lock_free(bio->lock); + goto err; + } + + return bio; + +err: + OPENSSL_free(bio); + return NULL; } int BIO_free(BIO *a) @@ -107,30 +55,59 @@ int BIO_free(BIO *a) int i; if (a == NULL) - return (0); + return 0; - i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_BIO); -#ifdef REF_PRINT - REF_PRINT("BIO", a); -#endif + if (CRYPTO_atomic_add(&a->references, -1, &i, a->lock) <= 0) + return 0; + + REF_PRINT_COUNT("BIO", a); if (i > 0) - return (1); -#ifdef REF_CHECK - if (i < 0) { - fprintf(stderr, "BIO_free, bad reference count\n"); - abort(); - } -#endif + return 1; + REF_ASSERT_ISNT(i < 0); if ((a->callback != NULL) && ((i = (int)a->callback(a, BIO_CB_FREE, NULL, 0, 0L, 1L)) <= 0)) - return (i); - - CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); + return i; if ((a->method != NULL) && (a->method->destroy != NULL)) a->method->destroy(a); + + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data); + + CRYPTO_THREAD_lock_free(a->lock); + OPENSSL_free(a); - return (1); + + return 1; +} + +void BIO_set_data(BIO *a, void *ptr) +{ + a->ptr = ptr; +} + +void *BIO_get_data(BIO *a) +{ + return a->ptr; +} + +void BIO_set_init(BIO *a, int init) +{ + a->init = init; +} + +int BIO_get_init(BIO *a) +{ + return a->init; +} + +void BIO_set_shutdown(BIO *a, int shut) +{ + a->shutdown = shut; +} + +int BIO_get_shutdown(BIO *a) +{ + return a->shutdown; } void BIO_vfree(BIO *a) @@ -138,6 +115,18 @@ void BIO_vfree(BIO *a) BIO_free(a); } +int BIO_up_ref(BIO *a) +{ + int i; + + if (CRYPTO_atomic_add(&a->references, 1, &i, a->lock) <= 0) + return 0; + + REF_PRINT_COUNT("BIO", a); + REF_ASSERT_ISNT(i < 2); + return ((i > 1) ? 1 : 0); +} + void BIO_clear_flags(BIO *b, int flags) { b->flags &= ~flags; @@ -466,6 +455,11 @@ int BIO_get_retry_reason(BIO *bio) return (bio->retry_reason); } +void BIO_set_retry_reason(BIO *bio, int reason) +{ + bio->retry_reason = reason; +} + BIO *BIO_find_type(BIO *bio, int type) { int mt, mask; @@ -495,6 +489,11 @@ BIO *BIO_next(BIO *b) return b->next_bio; } +void BIO_set_next(BIO *b, BIO *next) +{ + b->next_bio = next; +} + void BIO_free_all(BIO *bio) { BIO *b; @@ -583,3 +582,19 @@ uint64_t BIO_number_written(BIO *bio) return bio->num_write; return 0; } + +void bio_free_ex_data(BIO *bio) +{ + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data); +} + +void bio_cleanup(void) +{ +#ifndef OPENSSL_NO_SOCK + bio_sock_cleanup_int(); + CRYPTO_THREAD_lock_free(bio_lookup_lock); + bio_lookup_lock = NULL; +#endif + CRYPTO_THREAD_lock_free(bio_type_lock); + bio_type_lock = NULL; +}