cms_cd.c revision 296465 
1/* crypto/cms/cms_cd.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6/* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 */
54
55#include "cryptlib.h"
56#include <openssl/asn1t.h>
57#include <openssl/pem.h>
58#include <openssl/x509v3.h>
59#include <openssl/err.h>
60#include <openssl/cms.h>
61#include <openssl/bio.h>
62#ifndef OPENSSL_NO_COMP
63# include <openssl/comp.h>
64#endif
65#include "cms_lcl.h"
66
67DECLARE_ASN1_ITEM(CMS_CompressedData)
68
69#ifdef ZLIB
70
71/* CMS CompressedData Utilities */
72
73CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
74{
75    CMS_ContentInfo *cms;
76    CMS_CompressedData *cd;
77    /*
78     * Will need something cleverer if there is ever more than one
79     * compression algorithm or parameters have some meaning...
80     */
81    if (comp_nid != NID_zlib_compression) {
82        CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
83               CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
84        return NULL;
85    }
86    cms = CMS_ContentInfo_new();
87    if (!cms)
88        return NULL;
89
90    cd = M_ASN1_new_of(CMS_CompressedData);
91
92    if (!cd)
93        goto err;
94
95    cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
96    cms->d.compressedData = cd;
97
98    cd->version = 0;
99
100    X509_ALGOR_set0(cd->compressionAlgorithm,
101                    OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
102
103    cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
104
105    return cms;
106
107 err:
108
109    if (cms)
110        CMS_ContentInfo_free(cms);
111
112    return NULL;
113}
114
115BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
116{
117    CMS_CompressedData *cd;
118    ASN1_OBJECT *compoid;
119    if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
120        CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
121               CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
122        return NULL;
123    }
124    cd = cms->d.compressedData;
125    X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
126    if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
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