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 #ifndef OPENSSL_NO_COMP
62 #include <openssl/comp.h>
63 #endif
64 #include "cms_lcl.h"
65
66 DECLARE_ASN1_ITEM(CMS_CompressedData)
67
68 #ifdef ZLIB
69
70 /* CMS CompressedData Utilities */
71
72 CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
73 {
74 CMS_ContentInfo *cms;
75 CMS_CompressedData *cd;
76 /* Will need something cleverer if there is ever more than one
77 * compression algorithm or parameters have some meaning...
78 */
79 if (comp_nid != NID_zlib_compression)
80 {
81 CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
82 CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
83 return NULL;
84 }
85 cms = CMS_ContentInfo_new();
86 if (!cms)
87 return NULL;
88
89 cd = M_ASN1_new_of(CMS_CompressedData);
90
91 if (!cd)
92 goto err;
93
94 cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
95 cms->d.compressedData = cd;
96
97 cd->version = 0;
98
99 X509_ALGOR_set0(cd->compressionAlgorithm,
100 OBJ_nid2obj(NID_zlib_compression),
101 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
115 BIO *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 {
121 CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
122 CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
123 return NULL;
124 }
125 cd = cms->d.compressedData;
126 X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
127 if (OBJ_obj2nid(compoid) != NID_zlib_compression)
128 {
129 CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
130 CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
131 return NULL;
132 }
133 return BIO_new(BIO_f_zlib());
134 }
135
136 #endif