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cms_cd.c
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1 /* crypto/cms/cms_cd.c */
2 /* Written by Dr Stephen N Henson ([email protected]) 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
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
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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)
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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 #include <openssl/comp.h>
62 #include "cms_lcl.h"
63 
65 
66 #ifdef ZLIB
67 
68 /* CMS CompressedData Utilities */
69 
71  {
72  CMS_ContentInfo *cms;
74  /* Will need something cleverer if there is ever more than one
75  * compression algorithm or parameters have some meaning...
76  */
77  if (comp_nid != NID_zlib_compression)
78  {
81  return NULL;
82  }
83  cms = CMS_ContentInfo_new();
84  if (!cms)
85  return NULL;
86 
88 
89  if (!cd)
90  goto err;
91 
93  cms->d.compressedData = cd;
94 
95  cd->version = 0;
96 
99  V_ASN1_UNDEF, NULL);
100 
102 
103  return cms;
104 
105  err:
106 
107  if (cms)
108  CMS_ContentInfo_free(cms);
109 
110  return NULL;
111  }
112 
114  {
115  CMS_CompressedData *cd;
116  ASN1_OBJECT *compoid;
118  {
121  return NULL;
122  }
123  cd = cms->d.compressedData;
124  X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
125  if (OBJ_obj2nid(compoid) != NID_zlib_compression)
126  {
129  return NULL;
130  }
131  return BIO_new(BIO_f_zlib());
132  }
133 
134 #endif