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 }