text: /*
   * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the OpenSSL license (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #include <openssl/asn1t.h>
  #include <openssl/x509.h>
  #include <openssl/err.h>
  #include <openssl/pem.h>
  #include <openssl/cms.h>
  #include "cms_lcl.h"
  
  int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
  {
      ASN1_OCTET_STRING **pos;
      pos = CMS_get0_content(cms);
      if (pos == NULL)
          return 0;
      if (*pos == NULL)
          *pos = ASN1_OCTET_STRING_new();
      if (*pos != NULL) {
          (*pos)->flags |= ASN1_STRING_FLAG_NDEF;
          (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
          *boundary = &(*pos)->data;
          return 1;
      }
      CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE);
      return 0;
  }
  
  CMS_ContentInfo *d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms)
  {
      return ASN1_item_d2i_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
  }
  
  int i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms)
  {
      return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms);
  }
  
  IMPLEMENT_PEM_rw_const(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo)
  
  BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms)
  {
      return BIO_new_NDEF(out, (ASN1_VALUE *)cms,
                          ASN1_ITEM_rptr(CMS_ContentInfo));
  }
  
  /* CMS wrappers round generalised stream and MIME routines */
  
  int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags)
  {
      return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags,
                                 ASN1_ITEM_rptr(CMS_ContentInfo));
  }
  
  int PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in,
                               int flags)
  {
      return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags,
                                       "CMS", ASN1_ITEM_rptr(CMS_ContentInfo));
  }
  
  int SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags)
  {
      STACK_OF(X509_ALGOR) *mdalgs;
      int ctype_nid = OBJ_obj2nid(cms->contentType);
      int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms));
      if (ctype_nid == NID_pkcs7_signed)
          mdalgs = cms->d.signedData->digestAlgorithms;
      else
          mdalgs = NULL;
  
      return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags,
                              ctype_nid, econt_nid, mdalgs,
                              ASN1_ITEM_rptr(CMS_ContentInfo));
  }
  
  CMS_ContentInfo *SMIME_read_CMS(BIO *bio, BIO **bcont)
  {
      return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont,
                                                ASN1_ITEM_rptr
                                                (CMS_ContentInfo));
  }
  