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/* pk7_mime.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project.
*/
/* ====================================================================
* Copyright (c) 1999-2005 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 <stdio.h>
#include <ctype.h>
#include "cryptlib.h"
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/asn1.h>
/* PKCS#7 wrappers round generalised MIME routines */
PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont)
{
return (PKCS7 *)SMIME_read_ASN1(bio, bcont, ASN1_ITEM_rptr(PKCS7));
}
/* Callback for int_smime_write_ASN1 */
static int pk7_output_data(BIO *out, BIO *data, ASN1_VALUE *val, int flags,
const ASN1_ITEM *it)
{
PKCS7 *p7 = (PKCS7 *)val;
BIO *tmpbio, *p7bio;
if (!(flags & SMIME_DETACHED))
{
SMIME_crlf_copy(data, out, flags);
return 1;
}
/* Let PKCS7 code prepend any needed BIOs */
p7bio = PKCS7_dataInit(p7, out);
if (!p7bio)
return 0;
/* Copy data across, passing through filter BIOs for processing */
SMIME_crlf_copy(data, p7bio, flags);
/* Finalize structure */
if (PKCS7_dataFinal(p7, p7bio) <= 0)
goto err;
err:
/* Now remove any digests prepended to the BIO */
while (p7bio != out)
{
tmpbio = BIO_pop(p7bio);
BIO_free(p7bio);
p7bio = tmpbio;
}
return 1;
}
int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
{
STACK_OF(X509_ALGOR) *mdalgs;
int ctype_nid = OBJ_obj2nid(p7->type);
if (ctype_nid == NID_pkcs7_signed)
mdalgs = p7->d.sign->md_algs;
else
mdalgs = NULL;
return int_smime_write_ASN1(bio, (ASN1_VALUE *)p7, data, flags,
ctype_nid, NID_undef, mdalgs,
pk7_output_data,
ASN1_ITEM_rptr(PKCS7));
}
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