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