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      1 /* crypto/cms/cms_io.c */
      2 /* Written by Dr Stephen N Henson (steve (at) openssl.org) for the OpenSSL
      3  * project.
      4  */
      5 /* ====================================================================
      6  * Copyright (c) 2008 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 (at) 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 
     54 #include <openssl/asn1t.h>
     55 #include <openssl/x509.h>
     56 #include <openssl/err.h>
     57 #include <openssl/pem.h>
     58 #include "cms.h"
     59 #include "cms_lcl.h"
     60 
     61 int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
     62 	{
     63 	ASN1_OCTET_STRING **pos;
     64 	pos = CMS_get0_content(cms);
     65 	if (!pos)
     66 		return 0;
     67 	if (!*pos)
     68 		*pos = ASN1_OCTET_STRING_new();
     69 	if (*pos)
     70 		{
     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, int flags)
    107 	{
    108 	return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *) cms, in, flags,
    109 					"CMS",
    110 					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(CMS_ContentInfo));
    132 	}
    133 
    134