155714Skris/* crypto/bio/bss_null.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8280304Sjkim * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15280304Sjkim * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22280304Sjkim * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37280304Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40280304Sjkim * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52280304Sjkim * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <errno.h> 6155714Skris#include "cryptlib.h" 6255714Skris#include <openssl/bio.h> 6355714Skris 6468651Skrisstatic int null_write(BIO *h, const char *buf, int num); 6568651Skrisstatic int null_read(BIO *h, char *buf, int size); 6668651Skrisstatic int null_puts(BIO *h, const char *str); 6768651Skrisstatic int null_gets(BIO *h, char *str, int size); 6868651Skrisstatic long null_ctrl(BIO *h, int cmd, long arg1, void *arg2); 6955714Skrisstatic int null_new(BIO *h); 7055714Skrisstatic int null_free(BIO *data); 71280304Sjkimstatic BIO_METHOD null_method = { 72280304Sjkim BIO_TYPE_NULL, 73280304Sjkim "NULL", 74280304Sjkim null_write, 75280304Sjkim null_read, 76280304Sjkim null_puts, 77280304Sjkim null_gets, 78280304Sjkim null_ctrl, 79280304Sjkim null_new, 80280304Sjkim null_free, 81280304Sjkim NULL, 82280304Sjkim}; 8355714Skris 8455714SkrisBIO_METHOD *BIO_s_null(void) 85280304Sjkim{ 86280304Sjkim return (&null_method); 87280304Sjkim} 8855714Skris 8955714Skrisstatic int null_new(BIO *bi) 90280304Sjkim{ 91280304Sjkim bi->init = 1; 92280304Sjkim bi->num = 0; 93280304Sjkim bi->ptr = (NULL); 94280304Sjkim return (1); 95280304Sjkim} 9655714Skris 9755714Skrisstatic int null_free(BIO *a) 98280304Sjkim{ 99280304Sjkim if (a == NULL) 100280304Sjkim return (0); 101280304Sjkim return (1); 102280304Sjkim} 103280304Sjkim 10455714Skrisstatic int null_read(BIO *b, char *out, int outl) 105280304Sjkim{ 106280304Sjkim return (0); 107280304Sjkim} 10855714Skris 10968651Skrisstatic int null_write(BIO *b, const char *in, int inl) 110280304Sjkim{ 111280304Sjkim return (inl); 112280304Sjkim} 11355714Skris 11468651Skrisstatic long null_ctrl(BIO *b, int cmd, long num, void *ptr) 115280304Sjkim{ 116280304Sjkim long ret = 1; 11755714Skris 118280304Sjkim switch (cmd) { 119280304Sjkim case BIO_CTRL_RESET: 120280304Sjkim case BIO_CTRL_EOF: 121280304Sjkim case BIO_CTRL_SET: 122280304Sjkim case BIO_CTRL_SET_CLOSE: 123280304Sjkim case BIO_CTRL_FLUSH: 124280304Sjkim case BIO_CTRL_DUP: 125280304Sjkim ret = 1; 126280304Sjkim break; 127280304Sjkim case BIO_CTRL_GET_CLOSE: 128280304Sjkim case BIO_CTRL_INFO: 129280304Sjkim case BIO_CTRL_GET: 130280304Sjkim case BIO_CTRL_PENDING: 131280304Sjkim case BIO_CTRL_WPENDING: 132280304Sjkim default: 133280304Sjkim ret = 0; 134280304Sjkim break; 135280304Sjkim } 136280304Sjkim return (ret); 137280304Sjkim} 13855714Skris 13955714Skrisstatic int null_gets(BIO *bp, char *buf, int size) 140280304Sjkim{ 141280304Sjkim return (0); 142280304Sjkim} 14355714Skris 14468651Skrisstatic int null_puts(BIO *bp, const char *str) 145280304Sjkim{ 146280304Sjkim if (str == NULL) 147280304Sjkim return (0); 148280304Sjkim return (strlen(str)); 149280304Sjkim} 150