crypto/openssl/crypto/pkcs7/pk7_attr.c

   1 /* pk7_attr.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 2001.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2001-2004 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <openssl/bio.h>
  63 #include <openssl/asn1.h>
  64 #include <openssl/asn1t.h>
  65 #include <openssl/pem.h>
  66 #include <openssl/pkcs7.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/err.h>
  69
  70 int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si,
  71                               STACK_OF(X509_ALGOR) *cap)
  72 {
  73     ASN1_STRING *seq;
  74     if (!(seq = ASN1_STRING_new())) {
  75         PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE);
  76         return 0;
  77     }
  78     seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data,
  79                                 ASN1_ITEM_rptr(X509_ALGORS));
  80     return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
  81                                       V_ASN1_SEQUENCE, seq);
  82 }
  83
  84 STACK_OF(X509_ALGOR) *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                       ASN1_ITEM_rptr(X509_ALGORS));
  96 }
  97
  98 /* Basic smime-capabilities OID and optional integer arg */
  99 int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
 100 {
 101     X509_ALGOR *alg;
 102
 103     if (!(alg = X509_ALGOR_new())) {
 104         PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 105         return 0;
 106     }
 107     ASN1_OBJECT_free(alg->algorithm);
 108     alg->algorithm = OBJ_nid2obj(nid);
 109     if (arg > 0) {
 110         ASN1_INTEGER *nbit;
 111         if (!(alg->parameter = ASN1_TYPE_new())) {
 112             PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 113             return 0;
 114         }
 115         if (!(nbit = ASN1_INTEGER_new())) {
 116             PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 117             return 0;
 118         }
 119         if (!ASN1_INTEGER_set(nbit, arg)) {
 120             PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 121             return 0;
 122         }
 123         alg->parameter->value.integer = nbit;
 124         alg->parameter->type = V_ASN1_INTEGER;
 125     }
 126     sk_X509_ALGOR_push(sk, alg);
 127     return 1;
 128 }
 129
 130 int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid)
 131 {
 132     if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType))
 133         return 0;
 134     if (!coid)
 135         coid = OBJ_nid2obj(NID_pkcs7_data);
 136     return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
 137                                       V_ASN1_OBJECT, coid);
 138 }
 139
 140 int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t)
 141 {
 142     if (!t && !(t = X509_gmtime_adj(NULL, 0))) {
 143         PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME,
 144                  ERR_R_MALLOC_FAILURE);
 145         return 0;
 146     }
 147     return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime,
 148                                       V_ASN1_UTCTIME, t);
 149 }
 150
 151 int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si,
 152                              const unsigned char *md, int mdlen)
 153 {
 154     ASN1_OCTET_STRING *os;
 155     os = ASN1_OCTET_STRING_new();
 156     if (!os)
 157         return 0;
 158     if (!ASN1_STRING_set(os, md, mdlen)
 159         || !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest,
 160                                        V_ASN1_OCTET_STRING, os)) {
 161         ASN1_OCTET_STRING_free(os);
 162         return 0;
 163     }
 164     return 1;
 165 }