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/pem.h>
  65 #include <openssl/pkcs7.h>
  66 #include <openssl/x509.h>
  67 #include <openssl/err.h>
  68
  69 int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si,
  70                               STACK_OF(X509_ALGOR) *cap)
  71 {
  72     ASN1_STRING *seq;
  73     unsigned char *p, *pp;
  74     int len;
  75     len = i2d_ASN1_SET_OF_X509_ALGOR(cap, NULL, i2d_X509_ALGOR,
  76                                      V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
  77                                      IS_SEQUENCE);
  78     if (!(pp = (unsigned char *)OPENSSL_malloc(len))) {
  79         PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE);
  80         return 0;
  81     }
  82     p = pp;
  83     i2d_ASN1_SET_OF_X509_ALGOR(cap, &p, i2d_X509_ALGOR, V_ASN1_SEQUENCE,
  84                                V_ASN1_UNIVERSAL, IS_SEQUENCE);
  85     if (!(seq = ASN1_STRING_new())) {
  86         PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE);
  87         return 0;
  88     }
  89     if (!ASN1_STRING_set(seq, pp, len)) {
  90         PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE);
  91         return 0;
  92     }
  93     OPENSSL_free(pp);
  94     return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities,
  95                                       V_ASN1_SEQUENCE, seq);
  96 }
  97
  98 STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si)
  99 {
 100     ASN1_TYPE *cap;
 101     const unsigned char *p;
 102
 103     cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities);
 104     if (!cap || (cap->type != V_ASN1_SEQUENCE))
 105         return NULL;
 106     p = cap->value.sequence->data;
 107     return d2i_ASN1_SET_OF_X509_ALGOR(NULL, &p,
 108                                       cap->value.sequence->length,
 109                                       d2i_X509_ALGOR, X509_ALGOR_free,
 110                                       V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
 111 }
 112
 113 /* Basic smime-capabilities OID and optional integer arg */
 114 int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
 115 {
 116     X509_ALGOR *alg;
 117
 118     if (!(alg = X509_ALGOR_new())) {
 119         PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 120         return 0;
 121     }
 122     ASN1_OBJECT_free(alg->algorithm);
 123     alg->algorithm = OBJ_nid2obj(nid);
 124     if (arg > 0) {
 125         ASN1_INTEGER *nbit;
 126         if (!(alg->parameter = ASN1_TYPE_new())) {
 127             PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 128             return 0;
 129         }
 130         if (!(nbit = ASN1_INTEGER_new())) {
 131             PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 132             return 0;
 133         }
 134         if (!ASN1_INTEGER_set(nbit, arg)) {
 135             PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE);
 136             return 0;
 137         }
 138         alg->parameter->value.integer = nbit;
 139         alg->parameter->type = V_ASN1_INTEGER;
 140     }
 141     sk_X509_ALGOR_push(sk, alg);
 142     return 1;
 143 }