1/* pk7_attr.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2001.
4 */
5/* ====================================================================
6 * Copyright (c) 2001-2004 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 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com).  This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <stdlib.h>
61#include <openssl/bio.h>
62#include <openssl/asn1.h>
63#include <openssl/pem.h>
64#include <openssl/pkcs7.h>
65#include <openssl/x509.h>
66#include <openssl/err.h>
67
68int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap)
69{
70	ASN1_STRING *seq;
71	unsigned char *p, *pp;
72	int len;
73	len=i2d_ASN1_SET_OF_X509_ALGOR(cap,NULL,i2d_X509_ALGOR,
74				       V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL,
75				       IS_SEQUENCE);
76	if(!(pp=(unsigned char *)OPENSSL_malloc(len))) {
77		PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
78		return 0;
79	}
80	p=pp;
81	i2d_ASN1_SET_OF_X509_ALGOR(cap,&p,i2d_X509_ALGOR, V_ASN1_SEQUENCE,
82				   V_ASN1_UNIVERSAL, IS_SEQUENCE);
83	if(!(seq = ASN1_STRING_new())) {
84		PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
85		return 0;
86	}
87	if(!ASN1_STRING_set (seq, pp, len)) {
88		PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
89		return 0;
90	}
91	OPENSSL_free (pp);
92        return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
93							V_ASN1_SEQUENCE, seq);
94}
95
96STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
97	{
98	ASN1_TYPE *cap;
99	unsigned char *p;
100	cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
101	if (!cap || (cap->type != V_ASN1_SEQUENCE))
102		return NULL;
103	p = cap->value.sequence->data;
104	return d2i_ASN1_SET_OF_X509_ALGOR(NULL, &p,
105					  cap->value.sequence->length,
106					  d2i_X509_ALGOR, X509_ALGOR_free,
107					  V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
108	}
109
110/* Basic smime-capabilities OID and optional integer arg */
111int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
112{
113	X509_ALGOR *alg;
114
115	if(!(alg = X509_ALGOR_new())) {
116		PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
117		return 0;
118	}
119	ASN1_OBJECT_free(alg->algorithm);
120	alg->algorithm = OBJ_nid2obj (nid);
121	if (arg > 0) {
122		ASN1_INTEGER *nbit;
123		if(!(alg->parameter = ASN1_TYPE_new())) {
124			PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
125			return 0;
126		}
127		if(!(nbit = ASN1_INTEGER_new())) {
128			PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
129			return 0;
130		}
131		if(!ASN1_INTEGER_set (nbit, arg)) {
132			PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
133			return 0;
134		}
135		alg->parameter->value.integer = nbit;
136		alg->parameter->type = V_ASN1_INTEGER;
137	}
138	sk_X509_ALGOR_push (sk, alg);
139	return 1;
140}
141