bss_null.c revision 68651
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. 855714Skris * 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). 1555714Skris * 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. 2255714Skris * 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 :-). 3755714Skris * 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)" 4055714Skris * 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. 5255714Skris * 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); 7155714Skrisstatic BIO_METHOD null_method= 7255714Skris { 7355714Skris BIO_TYPE_NULL, 7455714Skris "NULL", 7555714Skris null_write, 7655714Skris null_read, 7755714Skris null_puts, 7855714Skris null_gets, 7955714Skris null_ctrl, 8055714Skris null_new, 8155714Skris null_free, 8259191Skris NULL, 8355714Skris }; 8455714Skris 8555714SkrisBIO_METHOD *BIO_s_null(void) 8655714Skris { 8755714Skris return(&null_method); 8855714Skris } 8955714Skris 9055714Skrisstatic int null_new(BIO *bi) 9155714Skris { 9255714Skris bi->init=1; 9355714Skris bi->num=0; 9455714Skris bi->ptr=(NULL); 9555714Skris return(1); 9655714Skris } 9755714Skris 9855714Skrisstatic int null_free(BIO *a) 9955714Skris { 10055714Skris if (a == NULL) return(0); 10155714Skris return(1); 10255714Skris } 10355714Skris 10455714Skrisstatic int null_read(BIO *b, char *out, int outl) 10555714Skris { 10655714Skris return(0); 10755714Skris } 10855714Skris 10968651Skrisstatic int null_write(BIO *b, const char *in, int inl) 11055714Skris { 11155714Skris return(inl); 11255714Skris } 11355714Skris 11468651Skrisstatic long null_ctrl(BIO *b, int cmd, long num, void *ptr) 11555714Skris { 11655714Skris long ret=1; 11755714Skris 11855714Skris switch (cmd) 11955714Skris { 12055714Skris case BIO_CTRL_RESET: 12155714Skris case BIO_CTRL_EOF: 12255714Skris case BIO_CTRL_SET: 12355714Skris case BIO_CTRL_SET_CLOSE: 12455714Skris case BIO_CTRL_FLUSH: 12555714Skris case BIO_CTRL_DUP: 12655714Skris ret=1; 12755714Skris break; 12855714Skris case BIO_CTRL_GET_CLOSE: 12955714Skris case BIO_CTRL_INFO: 13055714Skris case BIO_CTRL_GET: 13155714Skris case BIO_CTRL_PENDING: 13255714Skris case BIO_CTRL_WPENDING: 13355714Skris default: 13455714Skris ret=0; 13555714Skris break; 13655714Skris } 13755714Skris return(ret); 13855714Skris } 13955714Skris 14055714Skrisstatic int null_gets(BIO *bp, char *buf, int size) 14155714Skris { 14255714Skris return(0); 14355714Skris } 14455714Skris 14568651Skrisstatic int null_puts(BIO *bp, const char *str) 14655714Skris { 14755714Skris if (str == NULL) return(0); 14855714Skris return(strlen(str)); 14955714Skris } 15055714Skris 151