X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fbio_md.c;h=8d502d0bf74a02e1b7e4688fc42b8080764da975;hp=0d6508c988fe26383c6290a293a58600d17ea440;hb=706457b7bda7fdbab426b8dce83b318908339da4;hpb=eda1f21f1af8b6f77327e7b37573af9c1ba73726 diff --git a/crypto/evp/bio_md.c b/crypto/evp/bio_md.c index 0d6508c988..8d502d0bf7 100644 --- a/crypto/evp/bio_md.c +++ b/crypto/evp/bio_md.c @@ -1,270 +1,233 @@ -/* crypto/evp/bio_md.c */ -/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) - * All rights reserved. +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include #include -#include "cryptlib.h" -#include "buffer.h" -#include "evp.h" - -/* BIO_put and BIO_get both add to the digest, - * BIO_gets returns the digest */ - -#ifndef NOPROTO -static int md_write(BIO *h,char *buf,int num); -static int md_read(BIO *h,char *buf,int size); -/*static int md_puts(BIO *h,char *str); */ -static int md_gets(BIO *h,char *str,int size); -static long md_ctrl(BIO *h,int cmd,long arg1,char *arg2); -static int md_new(BIO *h); -static int md_free(BIO *data); -#else -static int md_write(); -static int md_read(); -/*static int md_puts(); */ -static int md_gets(); -static long md_ctrl(); -static int md_new(); -static int md_free(); -#endif - -static BIO_METHOD methods_md= - { - BIO_TYPE_MD,"message digest", - md_write, - md_read, - NULL, /* md_puts, */ - md_gets, - md_ctrl, - md_new, - md_free, - }; - -BIO_METHOD *BIO_f_md() - { - return(&methods_md); - } - -static int md_new(bi) -BIO *bi; - { - EVP_MD_CTX *ctx; - - ctx=(EVP_MD_CTX *)Malloc(sizeof(EVP_MD_CTX)); - if (ctx == NULL) return(0); - - bi->init=0; - bi->ptr=(char *)ctx; - bi->flags=0; - return(1); - } - -static int md_free(a) -BIO *a; - { - if (a == NULL) return(0); - Free(a->ptr); - a->ptr=NULL; - a->init=0; - a->flags=0; - return(1); - } - -static int md_read(b,out,outl) -BIO *b; -char *out; -int outl; - { - int ret=0; - EVP_MD_CTX *ctx; - - if (out == NULL) return(0); - ctx=(EVP_MD_CTX *)b->ptr; - - if ((ctx == NULL) || (b->next_bio == NULL)) return(0); - - ret=BIO_read(b->next_bio,out,outl); - if (b->init) - { - if (ret > 0) - { - EVP_DigestUpdate(ctx,(unsigned char *)out, - (unsigned int)ret); - } - } - BIO_clear_retry_flags(b); - BIO_copy_next_retry(b); - return(ret); - } - -static int md_write(b,in,inl) -BIO *b; -char *in; -int inl; - { - int ret=0; - EVP_MD_CTX *ctx; - - if ((in == NULL) || (inl <= 0)) return(0); - ctx=(EVP_MD_CTX *)b->ptr; - - if ((ctx != NULL) && (b->next_bio != NULL)) - ret=BIO_write(b->next_bio,in,inl); - if (b->init) - { - if (ret > 0) - { - EVP_DigestUpdate(ctx,(unsigned char *)in, - (unsigned int)ret); - } - } - BIO_clear_retry_flags(b); - BIO_copy_next_retry(b); - return(ret); - } - -static long md_ctrl(b,cmd,num,ptr) -BIO *b; -int cmd; -long num; -char *ptr; - { - EVP_MD_CTX *ctx,*dctx,**pctx; - EVP_MD **ppmd; - EVP_MD *md; - long ret=1; - BIO *dbio; - - ctx=(EVP_MD_CTX *)b->ptr; - - switch (cmd) - { - case BIO_CTRL_RESET: - if (b->init) - EVP_DigestInit(ctx,ctx->digest); - else - ret=0; - ret=BIO_ctrl(b->next_bio,cmd,num,ptr); - break; - case BIO_C_GET_MD: - if (b->init) - { - ppmd=(EVP_MD **)ptr; - *ppmd=ctx->digest; - } - else - ret=0; - break; - case BIO_C_GET_MD_CTX: - if (b->init) - { - pctx=(EVP_MD_CTX **)ptr; - *pctx=ctx; - } - else - ret=0; - break; - case BIO_C_DO_STATE_MACHINE: - BIO_clear_retry_flags(b); - ret=BIO_ctrl(b->next_bio,cmd,num,ptr); - BIO_copy_next_retry(b); - break; - - case BIO_C_SET_MD: - md=(EVP_MD *)ptr; - EVP_DigestInit(ctx,md); - b->init=1; - break; - case BIO_CTRL_DUP: - dbio=(BIO *)ptr; - dctx=(EVP_MD_CTX *)dbio->ptr; - memcpy(dctx,ctx,sizeof(ctx)); - b->init=1; - break; - default: - ret=BIO_ctrl(b->next_bio,cmd,num,ptr); - break; - } - return(ret); - } - -static int md_gets(bp,buf,size) -BIO *bp; -char *buf; -int size; - { - EVP_MD_CTX *ctx; - unsigned int ret; - - - ctx=(EVP_MD_CTX *)bp->ptr; - if (size < ctx->digest->md_size) - return(0); - EVP_DigestFinal(ctx,(unsigned char *)buf,&ret); - return((int)ret); - } +#include "internal/cryptlib.h" +#include +#include +#include "crypto/evp.h" +#include "evp_local.h" +#include "internal/bio.h" /* -static int md_puts(bp,str) -BIO *bp; -char *str; - { - return(-1); - } -*/ + * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest + */ +static int md_write(BIO *h, char const *buf, int num); +static int md_read(BIO *h, char *buf, int size); +static int md_gets(BIO *h, char *str, int size); +static long md_ctrl(BIO *h, int cmd, long arg1, void *arg2); +static int md_new(BIO *h); +static int md_free(BIO *data); +static long md_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp); + +static const BIO_METHOD methods_md = { + BIO_TYPE_MD, + "message digest", + /* TODO: Convert to new style write function */ + bwrite_conv, + md_write, + /* TODO: Convert to new style read function */ + bread_conv, + md_read, + NULL, /* md_puts, */ + md_gets, + md_ctrl, + md_new, + md_free, + md_callback_ctrl, +}; + +const BIO_METHOD *BIO_f_md(void) +{ + return &methods_md; +} + +static int md_new(BIO *bi) +{ + EVP_MD_CTX *ctx; + + ctx = EVP_MD_CTX_new(); + if (ctx == NULL) + return 0; + + BIO_set_init(bi, 1); + BIO_set_data(bi, ctx); + + return 1; +} + +static int md_free(BIO *a) +{ + if (a == NULL) + return 0; + EVP_MD_CTX_free(BIO_get_data(a)); + BIO_set_data(a, NULL); + BIO_set_init(a, 0); + + return 1; +} + +static int md_read(BIO *b, char *out, int outl) +{ + int ret = 0; + EVP_MD_CTX *ctx; + BIO *next; + + if (out == NULL) + return 0; + + ctx = BIO_get_data(b); + next = BIO_next(b); + + if ((ctx == NULL) || (next == NULL)) + return 0; + + ret = BIO_read(next, out, outl); + if (BIO_get_init(b)) { + if (ret > 0) { + if (EVP_DigestUpdate(ctx, (unsigned char *)out, + (unsigned int)ret) <= 0) + return -1; + } + } + BIO_clear_retry_flags(b); + BIO_copy_next_retry(b); + return ret; +} + +static int md_write(BIO *b, const char *in, int inl) +{ + int ret = 0; + EVP_MD_CTX *ctx; + BIO *next; + + if ((in == NULL) || (inl <= 0)) + return 0; + + ctx = BIO_get_data(b); + next = BIO_next(b); + if ((ctx != NULL) && (next != NULL)) + ret = BIO_write(next, in, inl); + + if (BIO_get_init(b)) { + if (ret > 0) { + if (!EVP_DigestUpdate(ctx, (const unsigned char *)in, + (unsigned int)ret)) { + BIO_clear_retry_flags(b); + return 0; + } + } + } + if (next != NULL) { + BIO_clear_retry_flags(b); + BIO_copy_next_retry(b); + } + return ret; +} + +static long md_ctrl(BIO *b, int cmd, long num, void *ptr) +{ + EVP_MD_CTX *ctx, *dctx, **pctx; + const EVP_MD **ppmd; + EVP_MD *md; + long ret = 1; + BIO *dbio, *next; + + + ctx = BIO_get_data(b); + next = BIO_next(b); + + switch (cmd) { + case BIO_CTRL_RESET: + if (BIO_get_init(b)) + ret = EVP_DigestInit_ex(ctx, ctx->digest, NULL); + else + ret = 0; + if (ret > 0) + ret = BIO_ctrl(next, cmd, num, ptr); + break; + case BIO_C_GET_MD: + if (BIO_get_init(b)) { + ppmd = ptr; + *ppmd = ctx->digest; + } else + ret = 0; + break; + case BIO_C_GET_MD_CTX: + pctx = ptr; + *pctx = ctx; + BIO_set_init(b, 1); + break; + case BIO_C_SET_MD_CTX: + if (BIO_get_init(b)) + BIO_set_data(b, ptr); + else + ret = 0; + break; + case BIO_C_DO_STATE_MACHINE: + BIO_clear_retry_flags(b); + ret = BIO_ctrl(next, cmd, num, ptr); + BIO_copy_next_retry(b); + break; + + case BIO_C_SET_MD: + md = ptr; + ret = EVP_DigestInit_ex(ctx, md, NULL); + if (ret > 0) + BIO_set_init(b, 1); + break; + case BIO_CTRL_DUP: + dbio = ptr; + dctx = BIO_get_data(dbio); + if (!EVP_MD_CTX_copy_ex(dctx, ctx)) + return 0; + BIO_set_init(b, 1); + break; + default: + ret = BIO_ctrl(next, cmd, num, ptr); + break; + } + return ret; +} + +static long md_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp) +{ + long ret = 1; + BIO *next; + + next = BIO_next(b); + + if (next == NULL) + return 0; + + switch (cmd) { + default: + ret = BIO_callback_ctrl(next, cmd, fp); + break; + } + return ret; +} + +static int md_gets(BIO *bp, char *buf, int size) +{ + EVP_MD_CTX *ctx; + unsigned int ret; + + ctx = BIO_get_data(bp); + + if (size < ctx->digest->md_size) + return 0; + + if (EVP_DigestFinal_ex(ctx, (unsigned char *)buf, &ret) <= 0) + return -1; + + return (int)ret; +}