1 /* $OpenBSD: cms_io.c,v 1.20 2023/07/08 08:26:26 beck 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/cms.h> 57 #include <openssl/err.h> 58 #include <openssl/pem.h> 59 #include <openssl/x509.h> 60 61 #include "asn1_local.h" 62 #include "cms_local.h" 63 64 int 65 CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms) 66 { 67 ASN1_OCTET_STRING **pos; 68 69 if ((pos = CMS_get0_content(cms)) == NULL) 70 return 0; 71 72 if (*pos == NULL) 73 *pos = ASN1_OCTET_STRING_new(); 74 if (*pos == NULL) { 75 CMSerror(ERR_R_MALLOC_FAILURE); 76 return 0; 77 } 78 79 (*pos)->flags |= ASN1_STRING_FLAG_NDEF; 80 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT; 81 *boundary = &(*pos)->data; 82 83 return 1; 84 } 85 LCRYPTO_ALIAS(CMS_stream); 86 87 CMS_ContentInfo * 88 d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms) 89 { 90 return ASN1_item_d2i_bio(&CMS_ContentInfo_it, bp, cms); 91 } 92 LCRYPTO_ALIAS(d2i_CMS_bio); 93 94 int 95 i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms) 96 { 97 return ASN1_item_i2d_bio(&CMS_ContentInfo_it, bp, cms); 98 } 99 LCRYPTO_ALIAS(i2d_CMS_bio); 100 101 102 CMS_ContentInfo * 103 PEM_read_bio_CMS(BIO *bp, CMS_ContentInfo **x, pem_password_cb *cb, void *u) 104 { 105 return PEM_ASN1_read_bio((d2i_of_void *)d2i_CMS_ContentInfo, 106 PEM_STRING_CMS, bp, (void **)x, cb, u); 107 } 108 109 CMS_ContentInfo * 110 PEM_read_CMS(FILE *fp, CMS_ContentInfo **x, pem_password_cb *cb, void *u) 111 { 112 return PEM_ASN1_read((d2i_of_void *)d2i_CMS_ContentInfo, 113 PEM_STRING_CMS, fp, (void **)x, cb, u); 114 } 115 116 int 117 PEM_write_bio_CMS(BIO *bp, const CMS_ContentInfo *x) 118 { 119 return PEM_ASN1_write_bio((i2d_of_void *)i2d_CMS_ContentInfo, 120 PEM_STRING_CMS, bp, (void *)x, NULL, NULL, 0, NULL, NULL); 121 } 122 123 int 124 PEM_write_CMS(FILE *fp, const CMS_ContentInfo *x) 125 { 126 return PEM_ASN1_write((i2d_of_void *)i2d_CMS_ContentInfo, 127 PEM_STRING_CMS, fp, (void *)x, NULL, NULL, 0, NULL, NULL); 128 } 129 130 BIO * 131 BIO_new_CMS(BIO *out, CMS_ContentInfo *cms) 132 { 133 return BIO_new_NDEF(out, (ASN1_VALUE *)cms, &CMS_ContentInfo_it); 134 } 135 LCRYPTO_ALIAS(BIO_new_CMS); 136 137 /* CMS wrappers round generalised stream and MIME routines */ 138 139 int 140 i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) 141 { 142 return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags, 143 &CMS_ContentInfo_it); 144 } 145 LCRYPTO_ALIAS(i2d_CMS_bio_stream); 146 147 int 148 PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) 149 { 150 return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)cms, in, flags, 151 "CMS", &CMS_ContentInfo_it); 152 } 153 LCRYPTO_ALIAS(PEM_write_bio_CMS_stream); 154 155 int 156 SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags) 157 { 158 STACK_OF(X509_ALGOR) *mdalgs = NULL; 159 int ctype_nid = OBJ_obj2nid(cms->contentType); 160 int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms)); 161 162 if (ctype_nid == NID_pkcs7_signed) 163 mdalgs = cms->d.signedData->digestAlgorithms; 164 165 return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags, ctype_nid, 166 econt_nid, mdalgs, &CMS_ContentInfo_it); 167 } 168 LCRYPTO_ALIAS(SMIME_write_CMS); 169 170 CMS_ContentInfo * 171 SMIME_read_CMS(BIO *bio, BIO **bcont) 172 { 173 return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont, 174 &CMS_ContentInfo_it); 175 } 176 LCRYPTO_ALIAS(SMIME_read_CMS); 177