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[openssl.git] / crypto / pkcs7 / pk7_attr.c
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
68 int 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
96 STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
97         {
98         ASN1_TYPE *cap;
99         const unsigned char *p;
100
101         cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
102         if (!cap || (cap->type != V_ASN1_SEQUENCE))
103                 return NULL;
104         p = cap->value.sequence->data;
105         return d2i_ASN1_SET_OF_X509_ALGOR(NULL, &p,
106                                           cap->value.sequence->length,
107                                           d2i_X509_ALGOR, X509_ALGOR_free,
108                                           V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
109         }
110
111 /* Basic smime-capabilities OID and optional integer arg */
112 int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
113 {
114         X509_ALGOR *alg;
115
116         if(!(alg = X509_ALGOR_new())) {
117                 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
118                 return 0;
119         }
120         ASN1_OBJECT_free(alg->algorithm);
121         alg->algorithm = OBJ_nid2obj (nid);
122         if (arg > 0) {
123                 ASN1_INTEGER *nbit;
124                 if(!(alg->parameter = ASN1_TYPE_new())) {
125                         PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
126                         return 0;
127                 }
128                 if(!(nbit = ASN1_INTEGER_new())) {
129                         PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
130                         return 0;
131                 }
132                 if(!ASN1_INTEGER_set (nbit, arg)) {
133                         PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
134                         return 0;
135                 }
136                 alg->parameter->value.integer = nbit;
137                 alg->parameter->type = V_ASN1_INTEGER;
138         }
139         sk_X509_ALGOR_push (sk, alg);
140         return 1;
141 }