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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);
}
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