pk7_attr.c revision 68651 
1/* pk7_attr.c */
2/* S/MIME code.
3 * Copyright (C) 1997-8 Dr S N Henson (shenson@bigfoot.com)
4 * All Rights Reserved.
5 * Redistribution of this code without the authors permission is expressly
6 * prohibited.
7 */
8
9#include <stdio.h>
10#include <stdlib.h>
11#include <openssl/bio.h>
12#include <openssl/asn1.h>
13#include <openssl/pem.h>
14#include <openssl/pkcs7.h>
15#include <openssl/x509.h>
16#include <openssl/err.h>
17
18int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap)
19{
20	ASN1_STRING *seq;
21	unsigned char *p, *pp;
22	int len;
23	len=i2d_ASN1_SET_OF_X509_ALGOR(cap,NULL,i2d_X509_ALGOR,
24				       V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL,
25				       IS_SEQUENCE);
26	if(!(pp=(unsigned char *)OPENSSL_malloc(len))) {
27		PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
28		return 0;
29	}
30	p=pp;
31	i2d_ASN1_SET_OF_X509_ALGOR(cap,&p,i2d_X509_ALGOR, V_ASN1_SEQUENCE,
32				   V_ASN1_UNIVERSAL, IS_SEQUENCE);
33	if(!(seq = ASN1_STRING_new())) {
34		PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
35		return 0;
36	}
37	if(!ASN1_STRING_set (seq, pp, len)) {
38		PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE);
39		return 0;
40	}
41	OPENSSL_free (pp);
42        return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
43							V_ASN1_SEQUENCE, seq);
44}
45
46STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
47{
48	ASN1_TYPE *cap;
49	unsigned char *p;
50	cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
51	if (!cap) return NULL;
52	p = cap->value.sequence->data;
53	return d2i_ASN1_SET_OF_X509_ALGOR(NULL, &p,
54					  cap->value.sequence->length,
55					  d2i_X509_ALGOR, X509_ALGOR_free,
56					  V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
57}
58
59/* Basic smime-capabilities OID and optional integer arg */
60int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
61{
62	X509_ALGOR *alg;
63
64	if(!(alg = X509_ALGOR_new())) {
65		PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
66		return 0;
67	}
68	ASN1_OBJECT_free(alg->algorithm);
69	alg->algorithm = OBJ_nid2obj (nid);
70	if (arg > 0) {
71		ASN1_INTEGER *nbit;
72		if(!(alg->parameter = ASN1_TYPE_new())) {
73			PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
74			return 0;
75		}
76		if(!(nbit = ASN1_INTEGER_new())) {
77			PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
78			return 0;
79		}
80		if(!ASN1_INTEGER_set (nbit, arg)) {
81			PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE);
82			return 0;
83		}
84		alg->parameter->value.integer = nbit;
85		alg->parameter->type = V_ASN1_INTEGER;
86	}
87	sk_X509_ALGOR_push (sk, alg);
88	return 1;
89}
90