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      1 /* crypto/cms/cms_cd.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 "cryptlib.h"
     55 #include <openssl/asn1t.h>
     56 #include <openssl/pem.h>
     57 #include <openssl/x509v3.h>
     58 #include <openssl/err.h>
     59 #include <openssl/cms.h>
     60 #include <openssl/bio.h>
     61 #ifndef OPENSSL_NO_COMP
     62 #include <openssl/comp.h>
     63 #endif
     64 #include "cms_lcl.h"
     65 
     66 DECLARE_ASN1_ITEM(CMS_CompressedData)
     67 
     68 #ifdef ZLIB
     69 
     70 /* CMS CompressedData Utilities */
     71 
     72 CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
     73 	{
     74 	CMS_ContentInfo *cms;
     75 	CMS_CompressedData *cd;
     76 	/* Will need something cleverer if there is ever more than one
     77 	 * compression algorithm or parameters have some meaning...
     78 	 */
     79 	if (comp_nid != NID_zlib_compression)
     80 		{
     81 		CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
     82 				CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
     83 		return NULL;
     84 		}
     85 	cms = CMS_ContentInfo_new();
     86 	if (!cms)
     87 		return NULL;
     88 
     89 	cd = M_ASN1_new_of(CMS_CompressedData);
     90 
     91 	if (!cd)
     92 		goto err;
     93 
     94 	cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
     95 	cms->d.compressedData = cd;
     96 
     97 	cd->version = 0;
     98 
     99 	X509_ALGOR_set0(cd->compressionAlgorithm,
    100 			OBJ_nid2obj(NID_zlib_compression),
    101 			V_ASN1_UNDEF, NULL);
    102 
    103 	cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
    104 
    105 	return cms;
    106 
    107 	err:
    108 
    109 	if (cms)
    110 		CMS_ContentInfo_free(cms);
    111 
    112 	return NULL;
    113 	}
    114 
    115 BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
    116 	{
    117 	CMS_CompressedData *cd;
    118 	ASN1_OBJECT *compoid;
    119 	if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData)
    120 		{
    121 		CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
    122 				CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
    123 		return NULL;
    124 		}
    125 	cd = cms->d.compressedData;
    126 	X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
    127 	if (OBJ_obj2nid(compoid) != NID_zlib_compression)
    128 		{
    129 		CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
    130 				CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
    131 		return NULL;
    132 		}
    133 	return BIO_new(BIO_f_zlib());
    134 	}
    135 
    136 #endif
    137