1 /* $OpenBSD: cms_io.c,v 1.11 2019/08/11 10:38:27 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 <openssl/asn1t.h> 56 #include <openssl/x509.h> 57 #include <openssl/err.h> 58 #include <openssl/pem.h> 59 #include <openssl/cms.h> 60 #include "cms_lcl.h" 61 62 int 63 CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms) 64 { 65 ASN1_OCTET_STRING **pos; 66 67 pos = CMS_get0_content(cms); 68 if (pos == NULL) 69 return 0; 70 if (*pos == NULL) 71 *pos = ASN1_OCTET_STRING_new(); 72 if (*pos != NULL) { 73 (*pos)->flags |= ASN1_STRING_FLAG_NDEF; 74 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT; 75 *boundary = &(*pos)->data; 76 return 1; 77 } 78 CMSerror(ERR_R_MALLOC_FAILURE); 79 return 0; 80 } 81 82 CMS_ContentInfo * 83 d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms) 84 { 85 return ASN1_item_d2i_bio(&CMS_ContentInfo_it, bp, cms); 86 } 87 88 int 89 i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms) 90 { 91 return ASN1_item_i2d_bio(&CMS_ContentInfo_it, bp, cms); 92 } 93 94 95 CMS_ContentInfo * 96 PEM_read_bio_CMS(BIO *bp, CMS_ContentInfo **x, pem_password_cb *cb, void *u) 97 { 98 return PEM_ASN1_read_bio((d2i_of_void *)d2i_CMS_ContentInfo, PEM_STRING_CMS, bp, 99 (void **)x, cb, u); 100 } 101 102 CMS_ContentInfo * 103 PEM_read_CMS(FILE *fp, CMS_ContentInfo **x, pem_password_cb *cb, void *u) 104 { 105 return PEM_ASN1_read((d2i_of_void *)d2i_CMS_ContentInfo, PEM_STRING_CMS, fp, 106 (void **)x, cb, u); 107 } 108 109 int 110 PEM_write_bio_CMS(BIO *bp, const CMS_ContentInfo *x) 111 { 112 return PEM_ASN1_write_bio((i2d_of_void *)i2d_CMS_ContentInfo, PEM_STRING_CMS, bp, 113 (void *)x, NULL, NULL, 0, NULL, NULL); 114 } 115 116 int 117 PEM_write_CMS(FILE *fp, const CMS_ContentInfo *x) 118 { 119 return PEM_ASN1_write((i2d_of_void *)i2d_CMS_ContentInfo, PEM_STRING_CMS, fp, 120 (void *)x, NULL, NULL, 0, NULL, NULL); 121 } 122 123 BIO * 124 BIO_new_CMS(BIO *out, CMS_ContentInfo *cms) 125 { 126 return BIO_new_NDEF(out, (ASN1_VALUE *)cms, 127 &CMS_ContentInfo_it); 128 } 129 130 /* CMS wrappers round generalised stream and MIME routines */ 131 132 int i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) 133 { 134 return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags, 135 &CMS_ContentInfo_it); 136 } 137 138 int 139 PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) 140 { 141 return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags, 142 "CMS", &CMS_ContentInfo_it); 143 } 144 145 int 146 SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags) 147 { 148 STACK_OF(X509_ALGOR) *mdalgs; 149 int ctype_nid = OBJ_obj2nid(cms->contentType); 150 int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms)); 151 152 if (ctype_nid == NID_pkcs7_signed) 153 mdalgs = cms->d.signedData->digestAlgorithms; 154 else 155 mdalgs = NULL; 156 157 return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags, ctype_nid, 158 econt_nid, mdalgs, &CMS_ContentInfo_it); 159 } 160 161 CMS_ContentInfo * 162 SMIME_read_CMS(BIO *bio, BIO **bcont) 163 { 164 return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont, 165 &CMS_ContentInfo_it); 166 } 167