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/* $OpenBSD: cms_cd.c,v 1.16 2022/11/26 16:08:51 tb Exp $ */
/*
* 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 "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
#include <openssl/cms.h>
#include <openssl/bio.h>
#include <openssl/comp.h>
#include "cms_local.h"
#ifdef ZLIB
/* CMS CompressedData Utilities */
CMS_ContentInfo *
cms_CompressedData_create(int comp_nid)
{
CMS_ContentInfo *cms;
CMS_CompressedData *cd;
/*
* Will need something cleverer if there is ever more than one
* compression algorithm or parameters have some meaning...
*/
if (comp_nid != NID_zlib_compression) {
CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
return NULL;
}
cms = CMS_ContentInfo_new();
if (cms == NULL)
return NULL;
cd = (CMS_CompressedData *)ASN1_item_new(&CMS_CompressedData_it);
if (cd == NULL)
goto err;
cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
cms->d.compressedData = cd;
cd->version = 0;
X509_ALGOR_set0(cd->compressionAlgorithm,
OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
return cms;
err:
CMS_ContentInfo_free(cms);
return NULL;
}
BIO *
cms_CompressedData_init_bio(CMS_ContentInfo *cms)
{
CMS_CompressedData *cd;
const ASN1_OBJECT *compoid;
if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
CMSerror(CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
return NULL;
}
cd = cms->d.compressedData;
X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
return NULL;
}
return BIO_new(BIO_f_zlib());
}
#endif
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