cms_cd.c revision 183234 
1/* crypto/cms/cms_cd.c */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5/* ====================================================================
6 * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in
17 *    the documentation and/or other materials provided with the
18 *    distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 *    software must display the following acknowledgment:
22 *    "This product includes software developed by the OpenSSL Project
23 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 *    endorse or promote products derived from this software without
27 *    prior written permission. For written permission, please contact
28 *    licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 *    nor may "OpenSSL" appear in their names without prior written
32 *    permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by the OpenSSL Project
37 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 */
53
54#include "cryptlib.h"
55#include <openssl/asn1t.h>
56#include <openssl/pem.h>
57#include <openssl/x509v3.h>
58#include <openssl/err.h>
59#include <openssl/cms.h>
60#include <openssl/bio.h>
61#include <openssl/comp.h>
62#include "cms_lcl.h"
63
64DECLARE_ASN1_ITEM(CMS_CompressedData)
65
66#ifdef ZLIB
67
68/* CMS CompressedData Utilities */
69
70CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
71	{
72	CMS_ContentInfo *cms;
73	CMS_CompressedData *cd;
74	/* Will need something cleverer if there is ever more than one
75	 * compression algorithm or parameters have some meaning...
76	 */
77	if (comp_nid != NID_zlib_compression)
78		{
79		CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
80				CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
81		return NULL;
82		}
83	cms = CMS_ContentInfo_new();
84	if (!cms)
85		return NULL;
86
87	cd = M_ASN1_new_of(CMS_CompressedData);
88
89	if (!cd)
90		goto err;
91
92	cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
93	cms->d.compressedData = cd;
94
95	cd->version = 0;
96
97	X509_ALGOR_set0(cd->compressionAlgorithm,
98			OBJ_nid2obj(NID_zlib_compression),
99			V_ASN1_UNDEF, NULL);
100
101	cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
102
103	return cms;
104
105	err:
106
107	if (cms)
108		CMS_ContentInfo_free(cms);
109
110	return NULL;
111	}
112
113BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
114	{
115	CMS_CompressedData *cd;
116	ASN1_OBJECT *compoid;
117	if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData)
118		{
119		CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
120				CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
121		return NULL;
122		}
123	cd = cms->d.compressedData;
124	X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
125	if (OBJ_obj2nid(compoid) != NID_zlib_compression)
126		{
127		CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
128				CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
129		return NULL;
130		}
131	return BIO_new(BIO_f_zlib());
132	}
133
134#endif
135