eng_devcrypto: make sure digest can do copy
[openssl.git] / crypto / cms / cms_cd.c
1 /*
2  * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the OpenSSL license (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
8  */
9
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_lcl.h"
19
20 #ifdef ZLIB
21
22 /* CMS CompressedData Utilities */
23
24 CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
25 {
26     CMS_ContentInfo *cms;
27     CMS_CompressedData *cd;
28     /*
29      * Will need something cleverer if there is ever more than one
30      * compression algorithm or parameters have some meaning...
31      */
32     if (comp_nid != NID_zlib_compression) {
33         CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
34                CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
35         return NULL;
36     }
37     cms = CMS_ContentInfo_new();
38     if (cms == NULL)
39         return NULL;
40
41     cd = M_ASN1_new_of(CMS_CompressedData);
42
43     if (cd == NULL)
44         goto err;
45
46     cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
47     cms->d.compressedData = cd;
48
49     cd->version = 0;
50
51     X509_ALGOR_set0(cd->compressionAlgorithm,
52                     OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
53
54     cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
55
56     return cms;
57
58  err:
59     CMS_ContentInfo_free(cms);
60     return NULL;
61 }
62
63 BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
64 {
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);
70         return NULL;
71     }
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);
77         return NULL;
78     }
79     return BIO_new(BIO_f_zlib());
80 }
81
82 #endif