678948068b
-=-=-=-=-=-=-=-=-=-=-=-=-= -Begin work on Navigation Meshes (simple pathfinding for now, will improve soon) -More doc on theme overriding -Upgraded OpenSSL to version without bugs -Misc bugfixes
275 lines
6.7 KiB
C
275 lines
6.7 KiB
C
/* crypto/evp/bio_md.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* 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.]
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/buffer.h>
|
|
#include <openssl/evp.h>
|
|
|
|
/* 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_puts(BIO *h, const char *str); */
|
|
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 BIO_METHOD methods_md=
|
|
{
|
|
BIO_TYPE_MD,"message digest",
|
|
md_write,
|
|
md_read,
|
|
NULL, /* md_puts, */
|
|
md_gets,
|
|
md_ctrl,
|
|
md_new,
|
|
md_free,
|
|
md_callback_ctrl,
|
|
};
|
|
|
|
BIO_METHOD *BIO_f_md(void)
|
|
{
|
|
return(&methods_md);
|
|
}
|
|
|
|
static int md_new(BIO *bi)
|
|
{
|
|
EVP_MD_CTX *ctx;
|
|
|
|
ctx=EVP_MD_CTX_create();
|
|
if (ctx == NULL) return(0);
|
|
|
|
bi->init=0;
|
|
bi->ptr=(char *)ctx;
|
|
bi->flags=0;
|
|
return(1);
|
|
}
|
|
|
|
static int md_free(BIO *a)
|
|
{
|
|
if (a == NULL) return(0);
|
|
EVP_MD_CTX_destroy(a->ptr);
|
|
a->ptr=NULL;
|
|
a->init=0;
|
|
a->flags=0;
|
|
return(1);
|
|
}
|
|
|
|
static int md_read(BIO *b, char *out, int outl)
|
|
{
|
|
int ret=0;
|
|
EVP_MD_CTX *ctx;
|
|
|
|
if (out == NULL) return(0);
|
|
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)
|
|
{
|
|
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;
|
|
|
|
if ((in == NULL) || (inl <= 0)) return(0);
|
|
ctx=b->ptr;
|
|
|
|
if ((ctx != NULL) && (b->next_bio != NULL))
|
|
ret=BIO_write(b->next_bio,in,inl);
|
|
if (b->init)
|
|
{
|
|
if (ret > 0)
|
|
{
|
|
if (!EVP_DigestUpdate(ctx,(const unsigned char *)in,
|
|
(unsigned int)ret))
|
|
{
|
|
BIO_clear_retry_flags(b);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
if(b->next_bio != 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;
|
|
|
|
ctx=b->ptr;
|
|
|
|
switch (cmd)
|
|
{
|
|
case BIO_CTRL_RESET:
|
|
if (b->init)
|
|
ret = EVP_DigestInit_ex(ctx,ctx->digest, NULL);
|
|
else
|
|
ret=0;
|
|
if (ret > 0)
|
|
ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
|
|
break;
|
|
case BIO_C_GET_MD:
|
|
if (b->init)
|
|
{
|
|
ppmd=ptr;
|
|
*ppmd=ctx->digest;
|
|
}
|
|
else
|
|
ret=0;
|
|
break;
|
|
case BIO_C_GET_MD_CTX:
|
|
pctx=ptr;
|
|
*pctx=ctx;
|
|
b->init = 1;
|
|
break;
|
|
case BIO_C_SET_MD_CTX:
|
|
if (b->init)
|
|
b->ptr=ptr;
|
|
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=ptr;
|
|
ret = EVP_DigestInit_ex(ctx,md, NULL);
|
|
if (ret > 0)
|
|
b->init=1;
|
|
break;
|
|
case BIO_CTRL_DUP:
|
|
dbio=ptr;
|
|
dctx=dbio->ptr;
|
|
if (!EVP_MD_CTX_copy_ex(dctx,ctx))
|
|
return 0;
|
|
b->init=1;
|
|
break;
|
|
default:
|
|
ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
|
|
break;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
static long md_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
|
|
{
|
|
long ret=1;
|
|
|
|
if (b->next_bio == NULL) return(0);
|
|
switch (cmd)
|
|
{
|
|
default:
|
|
ret=BIO_callback_ctrl(b->next_bio,cmd,fp);
|
|
break;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
static int md_gets(BIO *bp, char *buf, int size)
|
|
{
|
|
EVP_MD_CTX *ctx;
|
|
unsigned int ret;
|
|
|
|
|
|
ctx=bp->ptr;
|
|
if (size < ctx->digest->md_size)
|
|
return(0);
|
|
if (EVP_DigestFinal_ex(ctx,(unsigned char *)buf,&ret)<=0)
|
|
return -1;
|
|
|
|
return((int)ret);
|
|
}
|
|
|
|
/*
|
|
static int md_puts(bp,str)
|
|
BIO *bp;
|
|
char *str;
|
|
{
|
|
return(-1);
|
|
}
|
|
*/
|
|
|