crypto/cms/cms_io.c

   1 /*
   2  * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/asn1t.h>
  11 #include <openssl/x509.h>
  12 #include <openssl/err.h>
  13 #include <openssl/pem.h>
  14 #include <openssl/cms.h>
  15 #include "cms_lcl.h"
  16
  17 int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
  18 {
  19     ASN1_OCTET_STRING **pos;
  20     pos = CMS_get0_content(cms);
  21     if (pos == NULL)
  22         return 0;
  23     if (*pos == NULL)
  24         *pos = ASN1_OCTET_STRING_new();
  25     if (*pos != NULL) {
  26         (*pos)->flags |= ASN1_STRING_FLAG_NDEF;
  27         (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
  28         *boundary = &(*pos)->data;
  29         return 1;
  30     }
  31     CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE);
  32     return 0;
  33 }
  34
  35 CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms)
  36 {
  37     return ASN1_item_d2i_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
  38 }
  39
  40 int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms)
  41 {
  42     return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
  43 }
  44
  45 IMPLEMENT_PEM_rw_const(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo)
  46
  47 BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms)
  48 {
  49     return BIO_new_NDEF(out, (ASN1_VALUE *)cms,
  50                         ASN1_ITEM_rptr(CMS_ContentInfo));
  51 }
  52
  53 /* CMS wrappers round generalised stream and MIME routines */
  54
  55 int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
  56 {
  57     return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags,
  58                                ASN1_ITEM_rptr(CMS_ContentInfo));
  59 }
  60
  61 int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in,
  62                              int flags)
  63 {
  64     return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags,
  65                                      "CMS", ASN1_ITEM_rptr(CMS_ContentInfo));
  66 }
  67
  68 int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags)
  69 {
  70     STACK_OF(X509_ALGOR) *mdalgs;
  71     int ctype_nid = OBJ_obj2nid(cms->contentType);
  72     int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms));
  73     if (ctype_nid == NID_pkcs7_signed)
  74         mdalgs = cms->d.signedData->digestAlgorithms;
  75     else
  76         mdalgs = NULL;
  77
  78     return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags,
  79                             ctype_nid, econt_nid, mdalgs,
  80                             ASN1_ITEM_rptr(CMS_ContentInfo));
  81 }
  82
  83 CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont)
  84 {
  85     return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont,
  86                                               ASN1_ITEM_rptr
  87                                               (CMS_ContentInfo));
  88 }