1 | /* |
2 | * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
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 |
8 | */ |
9 | |
10 | #include <openssl/asn1t.h> |
11 | #include <openssl/x509.h> |
12 | #include <openssl/err.h> |
13 | #include <openssl/pem.h> |
14 | #include <openssl/cms.h> |
15 | #include "cms_local.h" |
16 | |
17 | /* unfortunately cannot constify BIO_new_NDEF() due to this and PKCS7_stream() */ |
18 | int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms) |
19 | { |
20 | ASN1_OCTET_STRING **pos; |
21 | pos = CMS_get0_content(cms); |
22 | if (pos == NULL) |
23 | return 0; |
24 | if (*pos == NULL) |
25 | *pos = ASN1_OCTET_STRING_new(); |
26 | if (*pos != NULL) { |
27 | (*pos)->flags |= ASN1_STRING_FLAG_NDEF; |
28 | (*pos)->flags &= ~ASN1_STRING_FLAG_CONT; |
29 | *boundary = &(*pos)->data; |
30 | return 1; |
31 | } |
32 | CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE); |
33 | return 0; |
34 | } |
35 | |
36 | CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms) |
37 | { |
38 | return ASN1_item_d2i_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms); |
39 | } |
40 | |
41 | int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms) |
42 | { |
43 | return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms); |
44 | } |
45 | |
46 | IMPLEMENT_PEM_rw(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo) |
47 | |
48 | BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms) |
49 | { |
50 | return BIO_new_NDEF(out, (ASN1_VALUE *)cms, |
51 | ASN1_ITEM_rptr(CMS_ContentInfo)); |
52 | } |
53 | |
54 | /* CMS wrappers round generalised stream and MIME routines */ |
55 | |
56 | int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) |
57 | { |
58 | return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags, |
59 | ASN1_ITEM_rptr(CMS_ContentInfo)); |
60 | } |
61 | |
62 | int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, |
63 | int flags) |
64 | { |
65 | return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags, |
66 | "CMS" , ASN1_ITEM_rptr(CMS_ContentInfo)); |
67 | } |
68 | |
69 | int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags) |
70 | { |
71 | STACK_OF(X509_ALGOR) *mdalgs; |
72 | int ctype_nid = OBJ_obj2nid(cms->contentType); |
73 | int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms)); |
74 | if (ctype_nid == NID_pkcs7_signed) |
75 | mdalgs = cms->d.signedData->digestAlgorithms; |
76 | else |
77 | mdalgs = NULL; |
78 | |
79 | return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags, |
80 | ctype_nid, econt_nid, mdalgs, |
81 | ASN1_ITEM_rptr(CMS_ContentInfo)); |
82 | } |
83 | |
84 | CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont) |
85 | { |
86 | return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont, |
87 | ASN1_ITEM_rptr |
88 | (CMS_ContentInfo)); |
89 | } |
90 | |