2 * Copyright 2008-2022 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include "internal/cryptlib.h"
11 #include <openssl/asn1t.h>
12 #include <openssl/pem.h>
13 #include <openssl/x509v3.h>
14 #include <openssl/err.h>
15 #include <openssl/cms.h>
16 #include <openssl/bio.h>
17 #include <openssl/comp.h>
18 #include "cms_local.h"
20 #ifndef OPENSSL_NO_ZLIB
22 /* CMS CompressedData Utilities */
24 CMS_ContentInfo
*ossl_cms_CompressedData_create(int comp_nid
,
29 CMS_CompressedData
*cd
;
32 * Will need something cleverer if there is ever more than one
33 * compression algorithm or parameters have some meaning...
35 if (comp_nid
!= NID_zlib_compression
) {
36 ERR_raise(ERR_LIB_CMS
, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
39 cms
= CMS_ContentInfo_new_ex(libctx
, propq
);
43 cd
= M_ASN1_new_of(CMS_CompressedData
);
48 cms
->contentType
= OBJ_nid2obj(NID_id_smime_ct_compressedData
);
49 cms
->d
.compressedData
= cd
;
53 (void)X509_ALGOR_set0(cd
->compressionAlgorithm
,
54 OBJ_nid2obj(NID_zlib_compression
),
55 V_ASN1_UNDEF
, NULL
); /* cannot fail */
57 cd
->encapContentInfo
->eContentType
= OBJ_nid2obj(NID_pkcs7_data
);
62 CMS_ContentInfo_free(cms
);
66 BIO
*ossl_cms_CompressedData_init_bio(const CMS_ContentInfo
*cms
)
68 CMS_CompressedData
*cd
;
69 const ASN1_OBJECT
*compoid
;
71 if (OBJ_obj2nid(cms
->contentType
) != NID_id_smime_ct_compressedData
) {
72 ERR_raise(ERR_LIB_CMS
, CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA
);
75 cd
= cms
->d
.compressedData
;
76 X509_ALGOR_get0(&compoid
, NULL
, NULL
, cd
->compressionAlgorithm
);
77 if (OBJ_obj2nid(compoid
) != NID_zlib_compression
) {
78 ERR_raise(ERR_LIB_CMS
, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
81 return BIO_new(BIO_f_zlib());