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0f113f3e | 1 | /* |
eec0ad10 | 2 | * Copyright 2008-2020 The OpenSSL Project Authors. All Rights Reserved. |
8931b30d | 3 | * |
08ddd302 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
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 | |
8931b30d DSH |
8 | */ |
9 | ||
b39fc560 | 10 | #include "internal/cryptlib.h" |
8931b30d DSH |
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> | |
3c27208f | 17 | #include <openssl/comp.h> |
706457b7 | 18 | #include "cms_local.h" |
8931b30d | 19 | |
8931b30d DSH |
20 | #ifdef ZLIB |
21 | ||
22 | /* CMS CompressedData Utilities */ | |
23 | ||
b4250010 | 24 | CMS_ContentInfo *cms_CompressedData_create(int comp_nid, OSSL_LIB_CTX *libctx, |
c1669f41 | 25 | const char *propq) |
0f113f3e MC |
26 | { |
27 | CMS_ContentInfo *cms; | |
28 | CMS_CompressedData *cd; | |
c1669f41 | 29 | |
0f113f3e MC |
30 | /* |
31 | * Will need something cleverer if there is ever more than one | |
32 | * compression algorithm or parameters have some meaning... | |
33 | */ | |
34 | if (comp_nid != NID_zlib_compression) { | |
9311d0c4 | 35 | ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
0f113f3e MC |
36 | return NULL; |
37 | } | |
d8652be0 | 38 | cms = CMS_ContentInfo_new_ex(libctx, propq); |
90945fa3 | 39 | if (cms == NULL) |
0f113f3e | 40 | return NULL; |
8931b30d | 41 | |
0f113f3e | 42 | cd = M_ASN1_new_of(CMS_CompressedData); |
8931b30d | 43 | |
90945fa3 | 44 | if (cd == NULL) |
0f113f3e | 45 | goto err; |
8931b30d | 46 | |
0f113f3e MC |
47 | cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData); |
48 | cms->d.compressedData = cd; | |
8931b30d | 49 | |
0f113f3e | 50 | cd->version = 0; |
8931b30d | 51 | |
0f113f3e MC |
52 | X509_ALGOR_set0(cd->compressionAlgorithm, |
53 | OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL); | |
8931b30d | 54 | |
0f113f3e | 55 | cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); |
8931b30d | 56 | |
0f113f3e | 57 | return cms; |
8931b30d | 58 | |
0f113f3e | 59 | err: |
25aaa98a | 60 | CMS_ContentInfo_free(cms); |
0f113f3e MC |
61 | return NULL; |
62 | } | |
8931b30d | 63 | |
0fc4d00a | 64 | BIO *cms_CompressedData_init_bio(const CMS_ContentInfo *cms) |
0f113f3e MC |
65 | { |
66 | CMS_CompressedData *cd; | |
5dfd0381 | 67 | const ASN1_OBJECT *compoid; |
c1669f41 | 68 | |
0f113f3e | 69 | if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) { |
9311d0c4 | 70 | ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA); |
0f113f3e MC |
71 | return NULL; |
72 | } | |
73 | cd = cms->d.compressedData; | |
74 | X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm); | |
75 | if (OBJ_obj2nid(compoid) != NID_zlib_compression) { | |
9311d0c4 | 76 | ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
0f113f3e MC |
77 | return NULL; |
78 | } | |
79 | return BIO_new(BIO_f_zlib()); | |
80 | } | |
8931b30d DSH |
81 | |
82 | #endif |