1 /* crypto/cms/cms_cd.c */ 2 /* Written by Dr Stephen N Henson (steve@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@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 #include <openssl/comp.h> 62 #include "cms_lcl.h" 63 64 DECLARE_ASN1_ITEM(CMS_CompressedData) 65 66 #ifdef ZLIB 67 68 /* CMS CompressedData Utilities */ 69 70 CMS_ContentInfo *cms_CompressedData_create(int comp_nid) 71 { 72 CMS_ContentInfo *cms; 73 CMS_CompressedData *cd; 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 { 79 CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE, 80 CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); 81 return NULL; 82 } 83 cms = CMS_ContentInfo_new(); 84 if (!cms) 85 return NULL; 86 87 cd = M_ASN1_new_of(CMS_CompressedData); 88 89 if (!cd) 90 goto err; 91 92 cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData); 93 cms->d.compressedData = cd; 94 95 cd->version = 0; 96 97 X509_ALGOR_set0(cd->compressionAlgorithm, 98 OBJ_nid2obj(NID_zlib_compression), 99 V_ASN1_UNDEF, NULL); 100 101 cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); 102 103 return cms; 104 105 err: 106 107 if (cms) 108 CMS_ContentInfo_free(cms); 109 110 return NULL; 111 } 112 113 BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms) 114 { 115 CMS_CompressedData *cd; 116 ASN1_OBJECT *compoid; 117 if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) 118 { 119 CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO, 120 CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA); 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 { 127 CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO, 128 CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); 129 return NULL; 130 } 131 return BIO_new(BIO_f_zlib()); 132 } 133 134 #endif 135