86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
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/*
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* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (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 <stdio.h>
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#include <errno.h>
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#include "bio_local.h"
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#include "internal/cryptlib.h"
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static int null_write(BIO *h, const char *buf, int num);
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static int null_read(BIO *h, char *buf, int size);
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static int null_puts(BIO *h, const char *str);
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static int null_gets(BIO *h, char *str, int size);
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static long null_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static const BIO_METHOD null_method = {
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BIO_TYPE_NULL,
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"NULL",
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bwrite_conv,
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null_write,
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bread_conv,
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null_read,
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null_puts,
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null_gets,
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null_ctrl,
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NULL,
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NULL,
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NULL, /* null_callback_ctrl */
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};
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const BIO_METHOD *BIO_s_null(void)
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{
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return &null_method;
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}
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static int null_read(BIO *b, char *out, int outl)
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{
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return 0;
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}
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static int null_write(BIO *b, const char *in, int inl)
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{
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return inl;
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}
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static long null_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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long ret = 1;
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switch (cmd) {
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case BIO_CTRL_RESET:
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case BIO_CTRL_EOF:
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case BIO_CTRL_SET:
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case BIO_CTRL_SET_CLOSE:
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case BIO_CTRL_FLUSH:
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case BIO_CTRL_DUP:
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ret = 1;
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break;
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case BIO_CTRL_GET_CLOSE:
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case BIO_CTRL_INFO:
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case BIO_CTRL_GET:
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case BIO_CTRL_PENDING:
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case BIO_CTRL_WPENDING:
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default:
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ret = 0;
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break;
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}
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return ret;
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}
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static int null_gets(BIO *bp, char *buf, int size)
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{
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return 0;
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}
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static int null_puts(BIO *bp, const char *str)
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{
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if (str == NULL)
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return 0;
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return strlen(str);
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}
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