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149 lines
4.8 KiB
149 lines
4.8 KiB
/* crypto/bio/bss_null.c */ |
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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* All rights reserved. |
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* |
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* This package is an SSL implementation written |
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* by Eric Young (eay@cryptsoft.com). |
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* The implementation was written so as to conform with Netscapes SSL. |
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* |
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* This library is free for commercial and non-commercial use as long as |
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* the following conditions are aheared to. The following conditions |
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* apply to all code found in this distribution, be it the RC4, RSA, |
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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* included with this distribution is covered by the same copyright terms |
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* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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* |
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* Copyright remains Eric Young's, and as such any Copyright notices in |
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* the code are not to be removed. |
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* If this package is used in a product, Eric Young should be given attribution |
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* as the author of the parts of the library used. |
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* This can be in the form of a textual message at program startup or |
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* in documentation (online or textual) provided with the package. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* "This product includes cryptographic software written by |
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* Eric Young (eay@cryptsoft.com)" |
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* The word 'cryptographic' can be left out if the rouines from the library |
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* being used are not cryptographic related :-). |
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* 4. If you include any Windows specific code (or a derivative thereof) from |
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* the apps directory (application code) you must include an acknowledgement: |
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* The licence and distribution terms for any publically available version or |
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* derivative of this code cannot be changed. i.e. this code cannot simply be |
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* copied and put under another distribution licence |
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* [including the GNU Public Licence.] |
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*/ |
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#include <stdio.h> |
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#include <errno.h> |
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#include "cryptlib.h" |
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#include <openssl/bio.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 int null_new(BIO *h); |
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static int null_free(BIO *data); |
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static BIO_METHOD null_method = { |
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BIO_TYPE_NULL, |
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"NULL", |
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null_write, |
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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_new, |
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null_free, |
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NULL, |
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}; |
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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_new(BIO *bi) |
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{ |
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bi->init = 1; |
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bi->num = 0; |
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bi->ptr = (NULL); |
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return (1); |
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} |
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static int null_free(BIO *a) |
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{ |
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if (a == NULL) |
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return (0); |
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return (1); |
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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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