1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/bio/bf_null.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <errno.h> 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "cryptlib.h" 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/bio.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* BIO_put and BIO_get both add to the digest, 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * BIO_gets returns the digest */ 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_write(BIO *h, const char *buf, int num); 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_read(BIO *h, char *buf, int size); 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_puts(BIO *h, const char *str); 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_gets(BIO *h, char *str, int size); 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic long nullf_ctrl(BIO *h, int cmd, long arg1, void *arg2); 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_new(BIO *h); 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_free(BIO *data); 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic long nullf_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp); 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic BIO_METHOD methods_nullf= 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_TYPE_NULL_FILTER, 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project "NULL filter", 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_write, 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_read, 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_puts, 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_gets, 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_ctrl, 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_new, 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_free, 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project nullf_callback_ctrl, 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project }; 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectBIO_METHOD *BIO_f_null(void) 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(&methods_nullf); 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_new(BIO *bi) 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bi->init=1; 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bi->ptr=NULL; 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bi->flags=0; 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(1); 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_free(BIO *a) 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (a == NULL) return(0); 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* a->ptr=NULL; 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project a->init=0; 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project a->flags=0;*/ 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(1); 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_read(BIO *b, char *out, int outl) 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret=0; 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (out == NULL) return(0); 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b->next_bio == NULL) return(0); 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=BIO_read(b->next_bio,out,outl); 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_clear_retry_flags(b); 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_copy_next_retry(b); 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_write(BIO *b, const char *in, int inl) 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret=0; 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((in == NULL) || (inl <= 0)) return(0); 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b->next_bio == NULL) return(0); 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=BIO_write(b->next_bio,in,inl); 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_clear_retry_flags(b); 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_copy_next_retry(b); 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic long nullf_ctrl(BIO *b, int cmd, long num, void *ptr) 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long ret; 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b->next_bio == NULL) return(0); 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch(cmd) 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case BIO_C_DO_STATE_MACHINE: 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_clear_retry_flags(b); 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project BIO_copy_next_retry(b); 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case BIO_CTRL_DUP: 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=0L; 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default: 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic long nullf_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project long ret=1; 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b->next_bio == NULL) return(0); 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (cmd) 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default: 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=BIO_callback_ctrl(b->next_bio,cmd,fp); 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project break; 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_gets(BIO *bp, char *buf, int size) 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (bp->next_bio == NULL) return(0); 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(BIO_gets(bp->next_bio,buf,size)); 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic int nullf_puts(BIO *bp, const char *str) 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (bp->next_bio == NULL) return(0); 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(BIO_puts(bp->next_bio,str)); 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 184