crypto/openssl/crypto/cms/cms_io.c

   1 /* crypto/cms/cms_io.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   4  * project.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2008 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
  55 #include <openssl/asn1t.h>
  56 #include <openssl/x509.h>
  57 #include <openssl/err.h>
  58 #include <openssl/pem.h>
  59 #include "cms.h"
  60 #include "cms_lcl.h"
  61
  62 int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
  63 {
  64     ASN1_OCTET_STRING **pos;
  65     pos = CMS_get0_content(cms);
  66     if (!pos)
  67         return 0;
  68     if (!*pos)
  69         *pos = ASN1_OCTET_STRING_new();
  70     if (*pos) {
  71         (*pos)->flags |= ASN1_STRING_FLAG_NDEF;
  72         (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
  73         *boundary = &(*pos)->data;
  74         return 1;
  75     }
  76     CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE);
  77     return 0;
  78 }
  79
  80 CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms)
  81 {
  82     return ASN1_item_d2i_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
  83 }
  84
  85 int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms)
  86 {
  87     return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
  88 }
  89
  90 IMPLEMENT_PEM_rw_const(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo)
  91
  92 BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms)
  93 {
  94     return BIO_new_NDEF(out, (ASN1_VALUE *)cms,
  95                         ASN1_ITEM_rptr(CMS_ContentInfo));
  96 }
  97
  98 /* CMS wrappers round generalised stream and MIME routines */
  99
 100 int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
 101 {
 102     return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags,
 103                                ASN1_ITEM_rptr(CMS_ContentInfo));
 104 }
 105
 106 int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in,
 107                              int flags)
 108 {
 109     return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags,
 110                                      "CMS", ASN1_ITEM_rptr(CMS_ContentInfo));
 111 }
 112
 113 int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags)
 114 {
 115     STACK_OF(X509_ALGOR) *mdalgs;
 116     int ctype_nid = OBJ_obj2nid(cms->contentType);
 117     int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms));
 118     if (ctype_nid == NID_pkcs7_signed)
 119         mdalgs = cms->d.signedData->digestAlgorithms;
 120     else
 121         mdalgs = NULL;
 122
 123     return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags,
 124                             ctype_nid, econt_nid, mdalgs,
 125                             ASN1_ITEM_rptr(CMS_ContentInfo));
 126 }
 127
 128 CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont)
 129 {
 130     return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont,
 131                                               ASN1_ITEM_rptr
 132                                               (CMS_ContentInfo));
 133 }