1/* pk7_attr.c */ 2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3 * project 2001. 4 */ 5/* ==================================================================== 6 * Copyright (c) 2001-2004 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 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59#include <stdio.h> 60#include <stdlib.h> 61#include <openssl/bio.h> 62#include <openssl/asn1.h> 63#include <openssl/pem.h> 64#include <openssl/pkcs7.h> 65#include <openssl/x509.h> 66#include <openssl/err.h> 67 68int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap) 69{ 70 ASN1_STRING *seq; 71 unsigned char *p, *pp; 72 int len; 73 len=i2d_ASN1_SET_OF_X509_ALGOR(cap,NULL,i2d_X509_ALGOR, 74 V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL, 75 IS_SEQUENCE); 76 if(!(pp=(unsigned char *)OPENSSL_malloc(len))) { 77 PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE); 78 return 0; 79 } 80 p=pp; 81 i2d_ASN1_SET_OF_X509_ALGOR(cap,&p,i2d_X509_ALGOR, V_ASN1_SEQUENCE, 82 V_ASN1_UNIVERSAL, IS_SEQUENCE); 83 if(!(seq = ASN1_STRING_new())) { 84 PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE); 85 return 0; 86 } 87 if(!ASN1_STRING_set (seq, pp, len)) { 88 PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE); 89 return 0; 90 } 91 OPENSSL_free (pp); 92 return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities, 93 V_ASN1_SEQUENCE, seq); 94} 95 96STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si) 97 { 98 ASN1_TYPE *cap; 99 unsigned char *p; 100 cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities); 101 if (!cap || (cap->type != V_ASN1_SEQUENCE)) 102 return NULL; 103 p = cap->value.sequence->data; 104 return d2i_ASN1_SET_OF_X509_ALGOR(NULL, &p, 105 cap->value.sequence->length, 106 d2i_X509_ALGOR, X509_ALGOR_free, 107 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); 108 } 109 110/* Basic smime-capabilities OID and optional integer arg */ 111int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) 112{ 113 X509_ALGOR *alg; 114 115 if(!(alg = X509_ALGOR_new())) { 116 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 117 return 0; 118 } 119 ASN1_OBJECT_free(alg->algorithm); 120 alg->algorithm = OBJ_nid2obj (nid); 121 if (arg > 0) { 122 ASN1_INTEGER *nbit; 123 if(!(alg->parameter = ASN1_TYPE_new())) { 124 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 125 return 0; 126 } 127 if(!(nbit = ASN1_INTEGER_new())) { 128 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 129 return 0; 130 } 131 if(!ASN1_INTEGER_set (nbit, arg)) { 132 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 133 return 0; 134 } 135 alg->parameter->value.integer = nbit; 136 alg->parameter->type = V_ASN1_INTEGER; 137 } 138 sk_X509_ALGOR_push (sk, alg); 139 return 1; 140} 141