1 /* $OpenBSD: cms_io.c,v 1.3 2014/06/12 15:49:28 deraadt Exp $ */ 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 <openssl/asn1t.h> 55 #include <openssl/x509.h> 56 #include <openssl/err.h> 57 #include <openssl/pem.h> 58 #include "cms.h" 59 #include "cms_lcl.h" 60 61 int 62 CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms) 63 { 64 ASN1_OCTET_STRING **pos; 65 66 pos = CMS_get0_content(cms); 67 if (!pos) 68 return 0; 69 if (!*pos) 70 *pos = ASN1_OCTET_STRING_new(); 71 if (*pos) { 72 (*pos)->flags |= ASN1_STRING_FLAG_NDEF; 73 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT; 74 *boundary = &(*pos)->data; 75 return 1; 76 } 77 CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE); 78 return 0; 79 } 80 81 CMS_ContentInfo * 82 d2i_CMS_bio(BIO *bp, CMS_ContentInfo **cms) 83 { 84 return ASN1_item_d2i_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms); 85 } 86 87 int 88 i2d_CMS_bio(BIO *bp, CMS_ContentInfo *cms) 89 { 90 return ASN1_item_i2d_bio(ASN1_ITEM_rptr(CMS_ContentInfo), bp, cms); 91 } 92 93 IMPLEMENT_PEM_rw_const(CMS, CMS_ContentInfo, PEM_STRING_CMS, CMS_ContentInfo) 94 95 BIO * 96 BIO_new_CMS(BIO *out, CMS_ContentInfo *cms) 97 { 98 return BIO_new_NDEF(out, (ASN1_VALUE *)cms, 99 ASN1_ITEM_rptr(CMS_ContentInfo)); 100 } 101 102 /* CMS wrappers round generalised stream and MIME routines */ 103 104 int 105 i2d_CMS_bio_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) 106 { 107 return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)cms, in, flags, 108 ASN1_ITEM_rptr(CMS_ContentInfo)); 109 } 110 111 int 112 PEM_write_bio_CMS_stream(BIO *out, CMS_ContentInfo *cms, BIO *in, int flags) 113 { 114 return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *) cms, in, flags, 115 "CMS", ASN1_ITEM_rptr(CMS_ContentInfo)); 116 } 117 118 int 119 SMIME_write_CMS(BIO *bio, CMS_ContentInfo *cms, BIO *data, int flags) 120 { 121 STACK_OF(X509_ALGOR) *mdalgs; 122 int ctype_nid = OBJ_obj2nid(cms->contentType); 123 int econt_nid = OBJ_obj2nid(CMS_get0_eContentType(cms)); 124 125 if (ctype_nid == NID_pkcs7_signed) 126 mdalgs = cms->d.signedData->digestAlgorithms; 127 else 128 mdalgs = NULL; 129 130 return SMIME_write_ASN1(bio, (ASN1_VALUE *)cms, data, flags, 131 ctype_nid, econt_nid, mdalgs, ASN1_ITEM_rptr(CMS_ContentInfo)); 132 } 133 134 CMS_ContentInfo * 135 SMIME_read_CMS(BIO *bio, BIO **bcont) 136 { 137 return (CMS_ContentInfo *)SMIME_read_ASN1(bio, bcont, 138 ASN1_ITEM_rptr(CMS_ContentInfo)); 139 } 140