lib/libcrypto/pkcs7/pk7_attr.c

   1 /* $OpenBSD: pk7_attr.c,v 1.12 2017/01/29 17:49:23 beck Exp $ */
   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
  70 PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap)
  71 {
  72         ASN1_STRING *seq;
  73         if (!(seq = ASN1_STRING_new())) {
  74                 PKCS7error(ERR_R_MALLOC_FAILURE);
  75                 return 0;
  76         }
  77         seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data,
  78             &X509_ALGORS_it);
  79         return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
  80             V_ASN1_SEQUENCE, seq);
  81 }
  82
  83 STACK_OF(X509_ALGOR) *
  84 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             &X509_ALGORS_it);
  96 }
  97
  98 /* Basic smime-capabilities OID and optional integer arg */
  99 int
 100 PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
 101 {
 102         X509_ALGOR *alg;
 103
 104         if (!(alg = X509_ALGOR_new())) {
 105                 PKCS7error(ERR_R_MALLOC_FAILURE);
 106                 return 0;
 107         }
 108         ASN1_OBJECT_free(alg->algorithm);
 109         alg->algorithm = OBJ_nid2obj(nid);
 110         if (arg > 0) {
 111                 ASN1_INTEGER *nbit;
 112
 113                 if (!(alg->parameter = ASN1_TYPE_new()))
 114                         goto err;
 115                 if (!(nbit = ASN1_INTEGER_new()))
 116                         goto err;
 117                 if (!ASN1_INTEGER_set(nbit, arg)) {
 118                         ASN1_INTEGER_free(nbit);
 119                         goto err;
 120                 }
 121                 alg->parameter->value.integer = nbit;
 122                 alg->parameter->type = V_ASN1_INTEGER;
 123         }
 124         if (sk_X509_ALGOR_push(sk, alg) == 0)
 125                 goto err;
 126         return 1;
 127
 128 err:
 129         PKCS7error(ERR_R_MALLOC_FAILURE);
 130         X509_ALGOR_free(alg);
 131         return 0;
 132 }
 133
 134 int
 135 PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid)
 136 {
 137         if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType))
 138                 return 0;
 139         if (!coid)
 140                 coid = OBJ_nid2obj(NID_pkcs7_data);
 141         return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
 142             V_ASN1_OBJECT, coid);
 143 }
 144
 145 int
 146 PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t)
 147 {
 148         if (!t && !(t = X509_gmtime_adj(NULL, 0))) {
 149                 PKCS7error(ERR_R_MALLOC_FAILURE);
 150                 return 0;
 151         }
 152         return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime,
 153             V_ASN1_UTCTIME, t);
 154 }
 155
 156 int
 157 PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, const unsigned char *md,
 158     int mdlen)
 159 {
 160         ASN1_OCTET_STRING *os;
 161
 162         os = ASN1_OCTET_STRING_new();
 163         if (!os)
 164                 return 0;
 165         if (!ASN1_STRING_set(os, md, mdlen) ||
 166             !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest,
 167             V_ASN1_OCTET_STRING, os)) {
 168                 ASN1_OCTET_STRING_free(os);
 169                 return 0;
 170         }
 171         return 1;
 172 }