cms_io.c revision 296341 
1/* crypto/cms/cms_io.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6/* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 */
54
55#include <openssl/asn1t.h>
56#include <openssl/x509.h>
57#include <openssl/err.h>
58#include <openssl/pem.h>
59#include "cms.h"
60#include "cms_lcl.h"
61
62int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
63{
64    ASN1_OCTET_STRING **pos;
65    pos = CMS_get0_content(cms);
66    if (!pos)
67        return 0;
68    if (!*pos)
69        *pos = ASN1_OCTET_STRING_new();
70    if (*pos) {
71        (*pos)->flags |= ASN1_STRING_FLAG_NDEF;
72        (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
73        *boundary = &(*pos)->data;
74        return 1;
75    }
76    CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE);
77    return 0;
78}
79
80CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms)
81{
82    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
83}
84
85int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms)
86{
87    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
88}
89
90IMPLEMENT_PEM_rw_const(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo)
91
92BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms)
93{
94    return BIO_new_NDEF(out, (ASN1_VALUE *)cms,
95                        ASN1_ITEM_rptr(CMS_ContentInfo));
96}
97
98/* CMS wrappers round generalised stream and MIME routines */
99
100int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
101{
102    return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags,
103                               ASN1_ITEM_rptr(CMS_ContentInfo));
104}
105
106int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in,
107                             int flags)
108{
109    return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags,
110                                     "CMS", ASN1_ITEM_rptr(CMS_ContentInfo));
111}
112
113int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags)
114{
115    STACK_OF(X509_ALGOR) *mdalgs;
116    int ctype_nid = OBJ_obj2nid(cms->contentType);
117    int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms));
118    if (ctype_nid == NID_pkcs7_signed)
119        mdalgs = cms->d.signedData->digestAlgorithms;
120    else
121        mdalgs = NULL;
122
123    return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags,
124                            ctype_nid, econt_nid, mdalgs,
125                            ASN1_ITEM_rptr(CMS_ContentInfo));
126}
127
128CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont)
129{
130    return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont,
131                                              ASN1_ITEM_rptr
132                                              (CMS_ContentInfo));
133}
134