1 /* $OpenBSD: cms_cd.c,v 1.15 2019/08/11 11:04:18 jsing Exp $ */ 2 /* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 4 * project. 5 */ 6 /* ==================================================================== 7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 */ 54 55 #include "cryptlib.h" 56 #include <openssl/asn1t.h> 57 #include <openssl/pem.h> 58 #include <openssl/x509v3.h> 59 #include <openssl/err.h> 60 #include <openssl/cms.h> 61 #include <openssl/bio.h> 62 #include <openssl/comp.h> 63 #include "cms_lcl.h" 64 65 #ifdef ZLIB 66 67 /* CMS CompressedData Utilities */ 68 69 CMS_ContentInfo * 70 cms_CompressedData_create(int comp_nid) 71 { 72 CMS_ContentInfo *cms; 73 CMS_CompressedData *cd; 74 75 /* 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 CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); 81 return NULL; 82 } 83 cms = CMS_ContentInfo_new(); 84 if (cms == NULL) 85 return NULL; 86 87 cd = (CMS_CompressedData *)ASN1_item_new(&CMS_CompressedData_it); 88 89 if (cd == NULL) 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), V_ASN1_UNDEF, NULL); 99 100 cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); 101 102 return cms; 103 104 err: 105 CMS_ContentInfo_free(cms); 106 return NULL; 107 } 108 109 BIO * 110 cms_CompressedData_init_bio(CMS_ContentInfo *cms) 111 { 112 CMS_CompressedData *cd; 113 const ASN1_OBJECT *compoid; 114 115 if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) { 116 CMSerror(CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA); 117 return NULL; 118 } 119 cd = cms->d.compressedData; 120 X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm); 121 if (OBJ_obj2nid(compoid) != NID_zlib_compression) { 122 CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); 123 return NULL; 124 } 125 return BIO_new(BIO_f_zlib()); 126 } 127 128 #endif 129