2 * Copyright 2008-2021 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"
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 X509_ALGOR_set0(cd->compressionAlgorithm,
54 OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
56 cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
61 CMS_ContentInfo_free(cms);
65 BIO *ossl_cms_CompressedData_init_bio(const CMS_ContentInfo *cms)
67 CMS_CompressedData *cd;
68 const ASN1_OBJECT *compoid;
70 if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
71 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
74 cd = cms->d.compressedData;
75 X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
76 if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
77 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
80 return BIO_new(BIO_f_zlib());