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2f545ae45d
Reviewed-by: Andy Polyakov <appro@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org> GH: #1500
215 lines
4.6 KiB
C
215 lines
4.6 KiB
C
/*
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* Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "bio_lcl.h"
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#include <internal/thread_once.h>
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CRYPTO_RWLOCK *bio_type_lock = NULL;
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static CRYPTO_ONCE bio_type_init = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(do_bio_type_init)
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{
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bio_type_lock = CRYPTO_THREAD_lock_new();
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return bio_type_lock != NULL;
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}
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int BIO_get_new_index()
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{
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static CRYPTO_REF_COUNT bio_count = BIO_TYPE_START;
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int newval;
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if (!RUN_ONCE(&bio_type_init, do_bio_type_init)) {
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BIOerr(BIO_F_BIO_GET_NEW_INDEX, ERR_R_MALLOC_FAILURE);
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return -1;
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}
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if (!CRYPTO_UP_REF(&bio_count, &newval, bio_type_lock))
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return -1;
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return newval;
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}
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BIO_METHOD *BIO_meth_new(int type, const char *name)
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{
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BIO_METHOD *biom = OPENSSL_zalloc(sizeof(BIO_METHOD));
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if (biom != NULL) {
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biom->type = type;
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biom->name = name;
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}
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return biom;
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}
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void BIO_meth_free(BIO_METHOD *biom)
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{
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OPENSSL_free(biom);
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}
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int (*BIO_meth_get_write(BIO_METHOD *biom)) (BIO *, const char *, int)
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{
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return biom->bwrite_old;
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}
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int (*BIO_meth_get_write_ex(BIO_METHOD *biom)) (BIO *, const char *, size_t,
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size_t *)
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{
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return biom->bwrite;
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}
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/* Conversion for old style bwrite to new style */
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int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written)
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{
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int ret;
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if (datal > INT_MAX)
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datal = INT_MAX;
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ret = bio->method->bwrite_old(bio, data, (int)datal);
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if (ret <= 0) {
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*written = 0;
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return ret;
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}
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*written = (size_t)ret;
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return 1;
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}
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int BIO_meth_set_write(BIO_METHOD *biom,
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int (*bwrite) (BIO *, const char *, int))
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{
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biom->bwrite_old = bwrite;
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biom->bwrite = bwrite_conv;
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return 1;
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}
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int BIO_meth_set_write_ex(BIO_METHOD *biom,
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int (*bwrite) (BIO *, const char *, size_t, size_t *))
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{
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biom->bwrite_old = NULL;
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biom->bwrite = bwrite;
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return 1;
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}
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int (*BIO_meth_get_read(BIO_METHOD *biom)) (BIO *, char *, int)
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{
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return biom->bread_old;
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}
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int (*BIO_meth_get_read_ex(BIO_METHOD *biom)) (BIO *, char *, size_t, size_t *)
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{
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return biom->bread;
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}
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/* Conversion for old style bread to new style */
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int bread_conv(BIO *bio, char *data, size_t datal, size_t *readbytes)
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{
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int ret;
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if (datal > INT_MAX)
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datal = INT_MAX;
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ret = bio->method->bread_old(bio, data, (int)datal);
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if (ret <= 0) {
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*readbytes = 0;
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return ret;
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}
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*readbytes = (size_t)ret;
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return 1;
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}
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int BIO_meth_set_read(BIO_METHOD *biom,
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int (*bread) (BIO *, char *, int))
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{
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biom->bread_old = bread;
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biom->bread = bread_conv;
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return 1;
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}
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int BIO_meth_set_read_ex(BIO_METHOD *biom,
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int (*bread) (BIO *, char *, size_t, size_t *))
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{
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biom->bread_old = NULL;
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biom->bread = bread;
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return 1;
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}
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int (*BIO_meth_get_puts(BIO_METHOD *biom)) (BIO *, const char *)
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{
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return biom->bputs;
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}
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int BIO_meth_set_puts(BIO_METHOD *biom,
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int (*bputs) (BIO *, const char *))
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{
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biom->bputs = bputs;
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return 1;
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}
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int (*BIO_meth_get_gets(BIO_METHOD *biom)) (BIO *, char *, int)
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{
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return biom->bgets;
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}
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int BIO_meth_set_gets(BIO_METHOD *biom,
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int (*bgets) (BIO *, char *, int))
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{
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biom->bgets = bgets;
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return 1;
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}
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long (*BIO_meth_get_ctrl(BIO_METHOD *biom)) (BIO *, int, long, void *)
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{
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return biom->ctrl;
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}
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int BIO_meth_set_ctrl(BIO_METHOD *biom,
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long (*ctrl) (BIO *, int, long, void *))
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{
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biom->ctrl = ctrl;
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return 1;
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}
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int (*BIO_meth_get_create(BIO_METHOD *biom)) (BIO *)
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{
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return biom->create;
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}
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int BIO_meth_set_create(BIO_METHOD *biom, int (*create) (BIO *))
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{
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biom->create = create;
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return 1;
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}
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int (*BIO_meth_get_destroy(BIO_METHOD *biom)) (BIO *)
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{
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return biom->destroy;
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}
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int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy) (BIO *))
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{
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biom->destroy = destroy;
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return 1;
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}
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long (*BIO_meth_get_callback_ctrl(BIO_METHOD *biom)) (BIO *, int, bio_info_cb *)
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{
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return biom->callback_ctrl;
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}
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int BIO_meth_set_callback_ctrl(BIO_METHOD *biom,
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long (*callback_ctrl) (BIO *, int,
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bio_info_cb *))
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{
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biom->callback_ctrl = callback_ctrl;
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return 1;
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}
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