1 /* $OpenBSD: cms_cd.c,v 1.15 2019/08/11 11:04:18 jsing Exp $ */
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 #include <openssl/comp.h>
63 #include "cms_lcl.h"
64 
65 #ifdef ZLIB
66 
67 /* CMS CompressedData Utilities */
68 
69 CMS_ContentInfo *
cms_CompressedData_create(int comp_nid)70 cms_CompressedData_create(int comp_nid)
71 {
72 	CMS_ContentInfo *cms;
73 	CMS_CompressedData *cd;
74 
75 	/*
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 		CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
81 		return NULL;
82 	}
83 	cms = CMS_ContentInfo_new();
84 	if (cms == NULL)
85 		return NULL;
86 
87 	cd = (CMS_CompressedData *)ASN1_item_new(&CMS_CompressedData_it);
88 
89 	if (cd == NULL)
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), V_ASN1_UNDEF, NULL);
99 
100 	cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
101 
102 	return cms;
103 
104  err:
105 	CMS_ContentInfo_free(cms);
106 	return NULL;
107 }
108 
109 BIO *
cms_CompressedData_init_bio(CMS_ContentInfo * cms)110 cms_CompressedData_init_bio(CMS_ContentInfo *cms)
111 {
112 	CMS_CompressedData *cd;
113 	const ASN1_OBJECT *compoid;
114 
115 	if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
116 		CMSerror(CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
117 		return NULL;
118 	}
119 	cd = cms->d.compressedData;
120 	X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
121 	if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
122 		CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
123 		return NULL;
124 	}
125 	return BIO_new(BIO_f_zlib());
126 }
127 
128 #endif
129