2 * Copyright 2008-2016 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>
22 /* CMS CompressedData Utilities */
24 CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
27 CMS_CompressedData *cd;
29 * Will need something cleverer if there is ever more than one
30 * compression algorithm or parameters have some meaning...
32 if (comp_nid != NID_zlib_compression) {
33 CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
34 CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
37 cms = CMS_ContentInfo_new();
41 cd = M_ASN1_new_of(CMS_CompressedData);
46 cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
47 cms->d.compressedData = cd;
51 X509_ALGOR_set0(cd->compressionAlgorithm,
52 OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
54 cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
59 CMS_ContentInfo_free(cms);
63 BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
65 CMS_CompressedData *cd;
66 const ASN1_OBJECT *compoid;
67 if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
68 CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
69 CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
72 cd = cms->d.compressedData;
73 X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
74 if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
75 CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
76 CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
79 return BIO_new(BIO_f_zlib());