1/* $OpenBSD: cms_io.c,v 1.21 2024/03/30 01:53:05 joshua Exp $ */
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/cms.h>
57#include <openssl/err.h>
58#include <openssl/pem.h>
59#include <openssl/x509.h>
60
61#include "asn1_local.h"
62#include "cms_local.h"
63
64int
65CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
66{
67	ASN1_OCTET_STRING **pos;
68
69	if ((pos = CMS_get0_content(cms)) == NULL)
70		return 0;
71
72	if (*pos == NULL)
73		*pos = ASN1_OCTET_STRING_new();
74	if (*pos == NULL) {
75		CMSerror(ERR_R_MALLOC_FAILURE);
76		return 0;
77	}
78
79	(*pos)->flags |= ASN1_STRING_FLAG_NDEF;
80	(*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
81	*boundary = &(*pos)->data;
82
83	return 1;
84}
85LCRYPTO_ALIAS(CMS_stream);
86
87CMS_ContentInfo *
88d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms)
89{
90	return ASN1_item_d2i_bio(&CMS_ContentInfo_it, bp, cms);
91}
92LCRYPTO_ALIAS(d2i_CMS_bio);
93
94int
95i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms)
96{
97	return ASN1_item_i2d_bio(&CMS_ContentInfo_it, bp, cms);
98}
99LCRYPTO_ALIAS(i2d_CMS_bio);
100
101
102CMS_ContentInfo *
103PEM_read_bio_CMS(BIO *bp, CMS_ContentInfo **x, pem_password_cb *cb, void *u)
104{
105	return PEM_ASN1_read_bio((d2i_of_void *)d2i_CMS_ContentInfo,
106	    PEM_STRING_CMS, bp, (void **)x, cb, u);
107}
108LCRYPTO_ALIAS(PEM_read_bio_CMS);
109
110CMS_ContentInfo *
111PEM_read_CMS(FILE *fp, CMS_ContentInfo **x, pem_password_cb *cb, void *u)
112{
113	return PEM_ASN1_read((d2i_of_void *)d2i_CMS_ContentInfo,
114	    PEM_STRING_CMS, fp, (void **)x, cb, u);
115}
116LCRYPTO_ALIAS(PEM_read_CMS);
117
118int
119PEM_write_bio_CMS(BIO *bp, const CMS_ContentInfo *x)
120{
121	return PEM_ASN1_write_bio((i2d_of_void *)i2d_CMS_ContentInfo,
122	    PEM_STRING_CMS, bp, (void *)x, NULL, NULL, 0, NULL, NULL);
123}
124LCRYPTO_ALIAS(PEM_write_bio_CMS);
125
126int
127PEM_write_CMS(FILE *fp, const CMS_ContentInfo *x)
128{
129	return PEM_ASN1_write((i2d_of_void *)i2d_CMS_ContentInfo,
130	    PEM_STRING_CMS, fp, (void *)x, NULL, NULL, 0, NULL, NULL);
131}
132LCRYPTO_ALIAS(PEM_write_CMS);
133
134BIO *
135BIO_new_CMS(BIO *out, CMS_ContentInfo *cms)
136{
137	return BIO_new_NDEF(out, (ASN1_VALUE *)cms, &CMS_ContentInfo_it);
138}
139LCRYPTO_ALIAS(BIO_new_CMS);
140
141/* CMS wrappers round generalised stream and MIME routines */
142
143int
144i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
145{
146	return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags,
147	    &CMS_ContentInfo_it);
148}
149LCRYPTO_ALIAS(i2d_CMS_bio_stream);
150
151int
152PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
153{
154	return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags,
155	    "CMS", &CMS_ContentInfo_it);
156}
157LCRYPTO_ALIAS(PEM_write_bio_CMS_stream);
158
159int
160SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags)
161{
162	STACK_OF(X509_ALGOR) *mdalgs = NULL;
163	int ctype_nid = OBJ_obj2nid(cms->contentType);
164	int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms));
165
166	if (ctype_nid == NID_pkcs7_signed)
167		mdalgs = cms->d.signedData->digestAlgorithms;
168
169	return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags, ctype_nid,
170	    econt_nid, mdalgs, &CMS_ContentInfo_it);
171}
172LCRYPTO_ALIAS(SMIME_write_CMS);
173
174CMS_ContentInfo *
175SMIME_read_CMS(BIO *bio, BIO **bcont)
176{
177	return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont,
178	    &CMS_ContentInfo_it);
179}
180LCRYPTO_ALIAS(SMIME_read_CMS);
181