1/* crypto/cms/cms_io.c */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5/* ====================================================================
6 * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in
17 *    the documentation and/or other materials provided with the
18 *    distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 *    software must display the following acknowledgment:
22 *    "This product includes software developed by the OpenSSL Project
23 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 *    endorse or promote products derived from this software without
27 *    prior written permission. For written permission, please contact
28 *    licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 *    nor may "OpenSSL" appear in their names without prior written
32 *    permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by the OpenSSL Project
37 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 */
53
54#include <openssl/asn1t.h>
55#include <openssl/x509.h>
56#include <openssl/err.h>
57#include <openssl/pem.h>
58#include "cms.h"
59#include "cms_lcl.h"
60
61int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
62	{
63	ASN1_OCTET_STRING **pos;
64	pos = CMS_get0_content(cms);
65	if (!pos)
66		return 0;
67	if (!*pos)
68		*pos = ASN1_OCTET_STRING_new();
69	if (*pos)
70		{
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, int flags)
107	{
108	return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *) cms, in, flags,
109					"CMS",
110					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(CMS_ContentInfo));
132	}
133
134