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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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 <assert.h>
#include <openssl/core_dispatch.h>
#include "internal/cryptlib.h"
#include "prov/bio.h"
static OSSL_FUNC_BIO_new_file_fn *c_bio_new_file = NULL;
static OSSL_FUNC_BIO_new_membuf_fn *c_bio_new_membuf = NULL;
static OSSL_FUNC_BIO_read_ex_fn *c_bio_read_ex = NULL;
static OSSL_FUNC_BIO_write_ex_fn *c_bio_write_ex = NULL;
static OSSL_FUNC_BIO_gets_fn *c_bio_gets = NULL;
static OSSL_FUNC_BIO_puts_fn *c_bio_puts = NULL;
static OSSL_FUNC_BIO_ctrl_fn *c_bio_ctrl = NULL;
static OSSL_FUNC_BIO_up_ref_fn *c_bio_up_ref = NULL;
static OSSL_FUNC_BIO_free_fn *c_bio_free = NULL;
static OSSL_FUNC_BIO_vprintf_fn *c_bio_vprintf = NULL;
int ossl_prov_bio_from_dispatch(const OSSL_DISPATCH *fns)
{
for (; fns->function_id != 0; fns++) {
switch (fns->function_id) {
case OSSL_FUNC_BIO_NEW_FILE:
if (c_bio_new_file == NULL)
c_bio_new_file = OSSL_FUNC_BIO_new_file(fns);
break;
case OSSL_FUNC_BIO_NEW_MEMBUF:
if (c_bio_new_membuf == NULL)
c_bio_new_membuf = OSSL_FUNC_BIO_new_membuf(fns);
break;
case OSSL_FUNC_BIO_READ_EX:
if (c_bio_read_ex == NULL)
c_bio_read_ex = OSSL_FUNC_BIO_read_ex(fns);
break;
case OSSL_FUNC_BIO_WRITE_EX:
if (c_bio_write_ex == NULL)
c_bio_write_ex = OSSL_FUNC_BIO_write_ex(fns);
break;
case OSSL_FUNC_BIO_GETS:
if (c_bio_gets == NULL)
c_bio_gets = OSSL_FUNC_BIO_gets(fns);
break;
case OSSL_FUNC_BIO_PUTS:
if (c_bio_puts == NULL)
c_bio_puts = OSSL_FUNC_BIO_puts(fns);
break;
case OSSL_FUNC_BIO_CTRL:
if (c_bio_ctrl == NULL)
c_bio_ctrl = OSSL_FUNC_BIO_ctrl(fns);
break;
case OSSL_FUNC_BIO_UP_REF:
if (c_bio_up_ref == NULL)
c_bio_up_ref = OSSL_FUNC_BIO_up_ref(fns);
break;
case OSSL_FUNC_BIO_FREE:
if (c_bio_free == NULL)
c_bio_free = OSSL_FUNC_BIO_free(fns);
break;
case OSSL_FUNC_BIO_VPRINTF:
if (c_bio_vprintf == NULL)
c_bio_vprintf = OSSL_FUNC_BIO_vprintf(fns);
break;
}
}
return 1;
}
OSSL_CORE_BIO *ossl_prov_bio_new_file(const char *filename, const char *mode)
{
if (c_bio_new_file == NULL)
return NULL;
return c_bio_new_file(filename, mode);
}
OSSL_CORE_BIO *ossl_prov_bio_new_membuf(const char *filename, int len)
{
if (c_bio_new_membuf == NULL)
return NULL;
return c_bio_new_membuf(filename, len);
}
int ossl_prov_bio_read_ex(OSSL_CORE_BIO *bio, void *data, size_t data_len,
size_t *bytes_read)
{
if (c_bio_read_ex == NULL)
return 0;
return c_bio_read_ex(bio, data, data_len, bytes_read);
}
int ossl_prov_bio_write_ex(OSSL_CORE_BIO *bio, const void *data, size_t data_len,
size_t *written)
{
if (c_bio_write_ex == NULL)
return 0;
return c_bio_write_ex(bio, data, data_len, written);
}
int ossl_prov_bio_gets(OSSL_CORE_BIO *bio, char *buf, int size)
{
if (c_bio_gets == NULL)
return -1;
return c_bio_gets(bio, buf, size);
}
int ossl_prov_bio_puts(OSSL_CORE_BIO *bio, const char *str)
{
if (c_bio_puts == NULL)
return -1;
return c_bio_puts(bio, str);
}
int ossl_prov_bio_ctrl(OSSL_CORE_BIO *bio, int cmd, long num, void *ptr)
{
if (c_bio_ctrl == NULL)
return -1;
return c_bio_ctrl(bio, cmd, num, ptr);
}
int ossl_prov_bio_up_ref(OSSL_CORE_BIO *bio)
{
if (c_bio_up_ref == NULL)
return 0;
return c_bio_up_ref(bio);
}
int ossl_prov_bio_free(OSSL_CORE_BIO *bio)
{
if (c_bio_free == NULL)
return 0;
return c_bio_free(bio);
}
int ossl_prov_bio_vprintf(OSSL_CORE_BIO *bio, const char *format, va_list ap)
{
if (c_bio_vprintf == NULL)
return -1;
return c_bio_vprintf(bio, format, ap);
}
int ossl_prov_bio_printf(OSSL_CORE_BIO *bio, const char *format, ...)
{
va_list ap;
int ret;
va_start(ap, format);
ret = ossl_prov_bio_vprintf(bio, format, ap);
va_end(ap);
return ret;
}
#ifndef FIPS_MODULE
/* No direct BIO support in the FIPS module */
static int bio_core_read_ex(BIO *bio, char *data, size_t data_len,
size_t *bytes_read)
{
return ossl_prov_bio_read_ex(BIO_get_data(bio), data, data_len, bytes_read);
}
static int bio_core_write_ex(BIO *bio, const char *data, size_t data_len,
size_t *written)
{
return ossl_prov_bio_write_ex(BIO_get_data(bio), data, data_len, written);
}
static long bio_core_ctrl(BIO *bio, int cmd, long num, void *ptr)
{
return ossl_prov_bio_ctrl(BIO_get_data(bio), cmd, num, ptr);
}
static int bio_core_gets(BIO *bio, char *buf, int size)
{
return ossl_prov_bio_gets(BIO_get_data(bio), buf, size);
}
static int bio_core_puts(BIO *bio, const char *str)
{
return ossl_prov_bio_puts(BIO_get_data(bio), str);
}
static int bio_core_new(BIO *bio)
{
BIO_set_init(bio, 1);
return 1;
}
static int bio_core_free(BIO *bio)
{
BIO_set_init(bio, 0);
ossl_prov_bio_free(BIO_get_data(bio));
return 1;
}
BIO_METHOD *ossl_bio_prov_init_bio_method(void)
{
BIO_METHOD *corebiometh = NULL;
corebiometh = BIO_meth_new(BIO_TYPE_CORE_TO_PROV, "BIO to Core filter");
if (corebiometh == NULL
|| !BIO_meth_set_write_ex(corebiometh, bio_core_write_ex)
|| !BIO_meth_set_read_ex(corebiometh, bio_core_read_ex)
|| !BIO_meth_set_puts(corebiometh, bio_core_puts)
|| !BIO_meth_set_gets(corebiometh, bio_core_gets)
|| !BIO_meth_set_ctrl(corebiometh, bio_core_ctrl)
|| !BIO_meth_set_create(corebiometh, bio_core_new)
|| !BIO_meth_set_destroy(corebiometh, bio_core_free)) {
BIO_meth_free(corebiometh);
return NULL;
}
return corebiometh;
}
BIO *ossl_bio_new_from_core_bio(PROV_CTX *provctx, OSSL_CORE_BIO *corebio)
{
BIO *outbio;
BIO_METHOD *corebiometh = ossl_prov_ctx_get0_core_bio_method(provctx);
if (corebiometh == NULL)
return NULL;
if ((outbio = BIO_new(corebiometh)) == NULL)
return NULL;
if (!ossl_prov_bio_up_ref(corebio)) {
BIO_free(outbio);
return NULL;
}
BIO_set_data(outbio, corebio);
return outbio;
}
#endif
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