mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
244 lines
6.8 KiB
C
244 lines
6.8 KiB
C
/* bio_ndef.c */
|
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2008 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* 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 above 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 acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED 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 OpenSSL PROJECT OR
|
|
* ITS 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.
|
|
* ====================================================================
|
|
*
|
|
*/
|
|
|
|
#include <openssl/asn1.h>
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/bio.h>
|
|
#include <openssl/err.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
/* Experimental NDEF ASN1 BIO support routines */
|
|
|
|
/* The usage is quite simple, initialize an ASN1 structure,
|
|
* get a BIO from it then any data written through the BIO
|
|
* will end up translated to approptiate format on the fly.
|
|
* The data is streamed out and does *not* need to be
|
|
* all held in memory at once.
|
|
*
|
|
* When the BIO is flushed the output is finalized and any
|
|
* signatures etc written out.
|
|
*
|
|
* The BIO is a 'proper' BIO and can handle non blocking I/O
|
|
* correctly.
|
|
*
|
|
* The usage is simple. The implementation is *not*...
|
|
*/
|
|
|
|
/* BIO support data stored in the ASN1 BIO ex_arg */
|
|
|
|
typedef struct ndef_aux_st
|
|
{
|
|
/* ASN1 structure this BIO refers to */
|
|
ASN1_VALUE *val;
|
|
const ASN1_ITEM *it;
|
|
/* Top of the BIO chain */
|
|
BIO *ndef_bio;
|
|
/* Output BIO */
|
|
BIO *out;
|
|
/* Boundary where content is inserted */
|
|
unsigned char **boundary;
|
|
/* DER buffer start */
|
|
unsigned char *derbuf;
|
|
} NDEF_SUPPORT;
|
|
|
|
static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
|
|
static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
|
|
static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg);
|
|
static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg);
|
|
|
|
BIO *BIO_new_NDEF(BIO *out, ASN1_VALUE *val, const ASN1_ITEM *it)
|
|
{
|
|
NDEF_SUPPORT *ndef_aux = NULL;
|
|
BIO *asn_bio = NULL;
|
|
const ASN1_AUX *aux = it->funcs;
|
|
ASN1_STREAM_ARG sarg;
|
|
|
|
if (!aux || !aux->asn1_cb)
|
|
{
|
|
ASN1err(ASN1_F_BIO_NEW_NDEF, ASN1_R_STREAMING_NOT_SUPPORTED);
|
|
return NULL;
|
|
}
|
|
ndef_aux = OPENSSL_malloc(sizeof(NDEF_SUPPORT));
|
|
asn_bio = BIO_new(BIO_f_asn1());
|
|
|
|
/* ASN1 bio needs to be next to output BIO */
|
|
|
|
out = BIO_push(asn_bio, out);
|
|
|
|
if (!ndef_aux || !asn_bio || !out)
|
|
goto err;
|
|
|
|
BIO_asn1_set_prefix(asn_bio, ndef_prefix, ndef_prefix_free);
|
|
BIO_asn1_set_suffix(asn_bio, ndef_suffix, ndef_suffix_free);
|
|
|
|
/* Now let callback prepend any digest, cipher etc BIOs
|
|
* ASN1 structure needs.
|
|
*/
|
|
|
|
sarg.out = out;
|
|
sarg.ndef_bio = NULL;
|
|
sarg.boundary = NULL;
|
|
|
|
if (aux->asn1_cb(ASN1_OP_STREAM_PRE, &val, it, &sarg) <= 0)
|
|
goto err;
|
|
|
|
ndef_aux->val = val;
|
|
ndef_aux->it = it;
|
|
ndef_aux->ndef_bio = sarg.ndef_bio;
|
|
ndef_aux->boundary = sarg.boundary;
|
|
ndef_aux->out = out;
|
|
|
|
BIO_ctrl(asn_bio, BIO_C_SET_EX_ARG, 0, ndef_aux);
|
|
|
|
return sarg.ndef_bio;
|
|
|
|
err:
|
|
if (asn_bio)
|
|
BIO_free(asn_bio);
|
|
if (ndef_aux)
|
|
OPENSSL_free(ndef_aux);
|
|
return NULL;
|
|
}
|
|
|
|
static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
|
|
{
|
|
NDEF_SUPPORT *ndef_aux;
|
|
unsigned char *p;
|
|
int derlen;
|
|
|
|
if (!parg)
|
|
return 0;
|
|
|
|
ndef_aux = *(NDEF_SUPPORT **)parg;
|
|
|
|
derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
|
|
p = OPENSSL_malloc(derlen);
|
|
ndef_aux->derbuf = p;
|
|
*pbuf = p;
|
|
derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);
|
|
|
|
if (!*ndef_aux->boundary)
|
|
return 0;
|
|
|
|
*plen = *ndef_aux->boundary - *pbuf;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int ndef_prefix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
|
|
{
|
|
NDEF_SUPPORT *ndef_aux;
|
|
|
|
if (!parg)
|
|
return 0;
|
|
|
|
ndef_aux = *(NDEF_SUPPORT **)parg;
|
|
|
|
if (ndef_aux->derbuf)
|
|
OPENSSL_free(ndef_aux->derbuf);
|
|
|
|
ndef_aux->derbuf = NULL;
|
|
*pbuf = NULL;
|
|
*plen = 0;
|
|
return 1;
|
|
}
|
|
|
|
static int ndef_suffix_free(BIO *b, unsigned char **pbuf, int *plen, void *parg)
|
|
{
|
|
NDEF_SUPPORT **pndef_aux = (NDEF_SUPPORT **)parg;
|
|
if (!ndef_prefix_free(b, pbuf, plen, parg))
|
|
return 0;
|
|
OPENSSL_free(*pndef_aux);
|
|
*pndef_aux = NULL;
|
|
return 1;
|
|
}
|
|
|
|
static int ndef_suffix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
|
|
{
|
|
NDEF_SUPPORT *ndef_aux;
|
|
unsigned char *p;
|
|
int derlen;
|
|
const ASN1_AUX *aux;
|
|
ASN1_STREAM_ARG sarg;
|
|
|
|
if (!parg)
|
|
return 0;
|
|
|
|
ndef_aux = *(NDEF_SUPPORT **)parg;
|
|
|
|
aux = ndef_aux->it->funcs;
|
|
|
|
/* Finalize structures */
|
|
sarg.ndef_bio = ndef_aux->ndef_bio;
|
|
sarg.out = ndef_aux->out;
|
|
sarg.boundary = ndef_aux->boundary;
|
|
if (aux->asn1_cb(ASN1_OP_STREAM_POST,
|
|
&ndef_aux->val, ndef_aux->it, &sarg) <= 0)
|
|
return 0;
|
|
|
|
derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
|
|
p = OPENSSL_malloc(derlen);
|
|
ndef_aux->derbuf = p;
|
|
*pbuf = p;
|
|
derlen = ASN1_item_ndef_i2d(ndef_aux->val, &p, ndef_aux->it);
|
|
|
|
if (!*ndef_aux->boundary)
|
|
return 0;
|
|
*pbuf = *ndef_aux->boundary;
|
|
*plen = derlen - (*ndef_aux->boundary - ndef_aux->derbuf);
|
|
|
|
return 1;
|
|
}
|