1c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* crypto/bio/bf_null.c */ 2c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * All rights reserved. 4c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 5c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This package is an SSL implementation written 6c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * by Eric Young (eay@cryptsoft.com). 7c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The implementation was written so as to conform with Netscapes SSL. 8c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 9c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This library is free for commercial and non-commercial use as long as 10c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the following conditions are aheared to. The following conditions 11c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * apply to all code found in this distribution, be it the RC4, RSA, 12c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * included with this distribution is covered by the same copyright terms 14c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 16c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Copyright remains Eric Young's, and as such any Copyright notices in 17c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the code are not to be removed. 18c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * If this package is used in a product, Eric Young should be given attribution 19c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * as the author of the parts of the library used. 20c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This can be in the form of a textual message at program startup or 21c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * in documentation (online or textual) provided with the package. 22c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 23c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Redistribution and use in source and binary forms, with or without 24c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * modification, are permitted provided that the following conditions 25c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * are met: 26c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 1. Redistributions of source code must retain the copyright 27c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * notice, this list of conditions and the following disclaimer. 28c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 2. Redistributions in binary form must reproduce the above copyright 29c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * notice, this list of conditions and the following disclaimer in the 30c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * documentation and/or other materials provided with the distribution. 31c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 3. All advertising materials mentioning features or use of this software 32c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * must display the following acknowledgement: 33c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * "This product includes cryptographic software written by 34c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Eric Young (eay@cryptsoft.com)" 35c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The word 'cryptographic' can be left out if the rouines from the library 36c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * being used are not cryptographic related :-). 37c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 4. If you include any Windows specific code (or a derivative thereof) from 38c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the apps directory (application code) you must include an acknowledgement: 39c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 41c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * SUCH DAMAGE. 52c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 53c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The licence and distribution terms for any publically available version or 54c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * derivative of this code cannot be changed. i.e. this code cannot simply be 55c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * copied and put under another distribution licence 56c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * [including the GNU Public Licence.] 57c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org */ 58c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 59c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <stdio.h> 60c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <errno.h> 61c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include "cryptlib.h" 62c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <openssl/bio.h> 63c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 64c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* BIO_put and BIO_get both add to the digest, 65c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * BIO_gets returns the digest */ 66c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 67c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_write(BIO *h, const char *buf, int num); 68c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_read(BIO *h, char *buf, int size); 69c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_puts(BIO *h, const char *str); 70c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_gets(BIO *h, char *str, int size); 71c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic long nullf_ctrl(BIO *h, int cmd, long arg1, void *arg2); 72c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_new(BIO *h); 73c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_free(BIO *data); 74c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic long nullf_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp); 75c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic BIO_METHOD methods_nullf= 76c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 77c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_TYPE_NULL_FILTER, 78c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org "NULL filter", 79c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_write, 80c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_read, 81c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_puts, 82c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_gets, 83c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_ctrl, 84c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_new, 85c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_free, 86c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org nullf_callback_ctrl, 87c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org }; 88c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 89c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgBIO_METHOD *BIO_f_null(void) 90c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 91c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(&methods_nullf); 92c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 93c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 94c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_new(BIO *bi) 95c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 96c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org bi->init=1; 97c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org bi->ptr=NULL; 98c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org bi->flags=0; 99c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(1); 100c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 101c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 102c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_free(BIO *a) 103c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 104c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (a == NULL) return(0); 105c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* a->ptr=NULL; 106c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org a->init=0; 107c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org a->flags=0;*/ 108c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(1); 109c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 110c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 111c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_read(BIO *b, char *out, int outl) 112c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 113c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org int ret=0; 114c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 115c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (out == NULL) return(0); 116c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (b->next_bio == NULL) return(0); 117c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=BIO_read(b->next_bio,out,outl); 118c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_clear_retry_flags(b); 119c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_copy_next_retry(b); 120c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(ret); 121c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 122c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 123c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_write(BIO *b, const char *in, int inl) 124c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 125c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org int ret=0; 126c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 127c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if ((in == NULL) || (inl <= 0)) return(0); 128c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (b->next_bio == NULL) return(0); 129c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=BIO_write(b->next_bio,in,inl); 130c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_clear_retry_flags(b); 131c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_copy_next_retry(b); 132c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(ret); 133c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 134c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 135c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic long nullf_ctrl(BIO *b, int cmd, long num, void *ptr) 136c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 137c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org long ret; 138c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 139c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (b->next_bio == NULL) return(0); 140c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org switch(cmd) 141c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 142c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org case BIO_C_DO_STATE_MACHINE: 143c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_clear_retry_flags(b); 144c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 145c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org BIO_copy_next_retry(b); 146c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org break; 147c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org case BIO_CTRL_DUP: 148c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=0L; 149c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org break; 150c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org default: 151c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 152c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 153c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(ret); 154c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 155c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 156c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic long nullf_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) 157c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 158c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org long ret=1; 159c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 160c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (b->next_bio == NULL) return(0); 161c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org switch (cmd) 162c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 163c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org default: 164c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org ret=BIO_callback_ctrl(b->next_bio,cmd,fp); 165c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org break; 166c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 167c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(ret); 168c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 169c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 170c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_gets(BIO *bp, char *buf, int size) 171c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 172c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (bp->next_bio == NULL) return(0); 173c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(BIO_gets(bp->next_bio,buf,size)); 174c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 175c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 176c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 177c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.orgstatic int nullf_puts(BIO *bp, const char *str) 178c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org { 179c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org if (bp->next_bio == NULL) return(0); 180c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org return(BIO_puts(bp->next_bio,str)); 181c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org } 182c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 183c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org 184