1/* pk7_attr.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 2001.
5 */
6/* ====================================================================
7 * Copyright (c) 2001-2004 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 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60#include <stdio.h>
61#include <stdlib.h>
62#include <openssl/bio.h>
63#include <openssl/asn1.h>
64#include <openssl/asn1t.h>
65#include <openssl/pem.h>
66#include <openssl/pkcs7.h>
67#include <openssl/x509.h>
68#include <openssl/err.h>
69
70int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si,
71                              STACK_OF(X509_ALGOR) *cap)
72{
73    ASN1_STRING *seq;
74    if (!(seq = ASN1_STRING_new())) {
75        PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE);
76        return 0;
77    }
78    seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data,
79                                ASN1_ITEM_rptr(X509_ALGORS));
80    return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
81                                      V_ASN1_SEQUENCE, seq);
82}
83
84STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
85{
86    ASN1_TYPE *cap;
87    const unsigned char *p;
88
89    cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
90    if (!cap || (cap->type != V_ASN1_SEQUENCE))
91        return NULL;
92    p = cap->value.sequence->data;
93    return (STACK_OF(X509_ALGOR) *)
94        ASN1_item_d2i(NULL, &p, cap->value.sequence->length,
95                      ASN1_ITEM_rptr(X509_ALGORS));
96}
97
98/* Basic smime-capabilities OID and optional integer arg */
99int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
100{
101    X509_ALGOR *alg;
102
103    if (!(alg = X509_ALGOR_new())) {
104        PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
105        return 0;
106    }
107    ASN1_OBJECT_free(alg->algorithm);
108    alg->algorithm = OBJ_nid2obj(nid);
109    if (arg > 0) {
110        ASN1_INTEGER *nbit;
111        if (!(alg->parameter = ASN1_TYPE_new())) {
112            PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
113            return 0;
114        }
115        if (!(nbit = ASN1_INTEGER_new())) {
116            PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
117            return 0;
118        }
119        if (!ASN1_INTEGER_set(nbit, arg)) {
120            PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
121            return 0;
122        }
123        alg->parameter->value.integer = nbit;
124        alg->parameter->type = V_ASN1_INTEGER;
125    }
126    sk_X509_ALGOR_push(sk, alg);
127    return 1;
128}
129
130int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid)
131{
132    if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType))
133        return 0;
134    if (!coid)
135        coid = OBJ_nid2obj(NID_pkcs7_data);
136    return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
137                                      V_ASN1_OBJECT, coid);
138}
139
140int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t)
141{
142    if (!t && !(t = X509_gmtime_adj(NULL, 0))) {
143        PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME,
144                 ERR_R_MALLOC_FAILURE);
145        return 0;
146    }
147    return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime,
148                                      V_ASN1_UTCTIME, t);
149}
150
151int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si,
152                             const unsigned char *md, int mdlen)
153{
154    ASN1_OCTET_STRING *os;
155    os = ASN1_OCTET_STRING_new();
156    if (!os)
157        return 0;
158    if (!ASN1_STRING_set(os, md, mdlen)
159        || !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest,
160                                       V_ASN1_OCTET_STRING, os)) {
161        ASN1_OCTET_STRING_free(os);
162        return 0;
163    }
164    return 1;
165}
166