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| /*
| * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
| *
| * 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 <stdio.h>
| #include <errno.h>
| #include "bio_local.h"
| #include "internal/cryptlib.h"
|
| static int null_write(BIO *h, const char *buf, int num);
| static int null_read(BIO *h, char *buf, int size);
| static int null_puts(BIO *h, const char *str);
| static int null_gets(BIO *h, char *str, int size);
| static long null_ctrl(BIO *h, int cmd, long arg1, void *arg2);
| static const BIO_METHOD null_method = {
| BIO_TYPE_NULL,
| "NULL",
| /* TODO: Convert to new style write function */
| bwrite_conv,
| null_write,
| /* TODO: Convert to new style read function */
| bread_conv,
| null_read,
| null_puts,
| null_gets,
| null_ctrl,
| NULL,
| NULL,
| NULL, /* null_callback_ctrl */
| };
|
| const BIO_METHOD *BIO_s_null(void)
| {
| return &null_method;
| }
|
| static int null_read(BIO *b, char *out, int outl)
| {
| return 0;
| }
|
| static int null_write(BIO *b, const char *in, int inl)
| {
| return inl;
| }
|
| static long null_ctrl(BIO *b, int cmd, long num, void *ptr)
| {
| long ret = 1;
|
| switch (cmd) {
| case BIO_CTRL_RESET:
| case BIO_CTRL_EOF:
| case BIO_CTRL_SET:
| case BIO_CTRL_SET_CLOSE:
| case BIO_CTRL_FLUSH:
| case BIO_CTRL_DUP:
| ret = 1;
| break;
| case BIO_CTRL_GET_CLOSE:
| case BIO_CTRL_INFO:
| case BIO_CTRL_GET:
| case BIO_CTRL_PENDING:
| case BIO_CTRL_WPENDING:
| default:
| ret = 0;
| break;
| }
| return ret;
| }
|
| static int null_gets(BIO *bp, char *buf, int size)
| {
| return 0;
| }
|
| static int null_puts(BIO *bp, const char *str)
| {
| if (str == NULL)
| return 0;
| return strlen(str);
| }
|
|
