1 /* $OpenBSD: x_attrib.c,v 1.11 2015/02/10 04:21:50 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <stdio.h> 60 61 #include <openssl/asn1t.h> 62 #include <openssl/objects.h> 63 #include <openssl/x509.h> 64 65 /* X509_ATTRIBUTE: this has the following form: 66 * 67 * typedef struct x509_attributes_st 68 * { 69 * ASN1_OBJECT *object; 70 * int single; 71 * union { 72 * char *ptr; 73 * STACK_OF(ASN1_TYPE) *set; 74 * ASN1_TYPE *single; 75 * } value; 76 * } X509_ATTRIBUTE; 77 * 78 * this needs some extra thought because the CHOICE type is 79 * merged with the main structure and because the value can 80 * be anything at all we *must* try the SET OF first because 81 * the ASN1_ANY type will swallow anything including the whole 82 * SET OF structure. 83 */ 84 85 ASN1_CHOICE(X509_ATTRIBUTE_SET) = { 86 ASN1_SET_OF(X509_ATTRIBUTE, value.set, ASN1_ANY), 87 ASN1_SIMPLE(X509_ATTRIBUTE, value.single, ASN1_ANY) 88 } ASN1_CHOICE_END_selector(X509_ATTRIBUTE, X509_ATTRIBUTE_SET, single) 89 90 ASN1_SEQUENCE(X509_ATTRIBUTE) = { 91 ASN1_SIMPLE(X509_ATTRIBUTE, object, ASN1_OBJECT), 92 /* CHOICE type merged with parent */ 93 ASN1_EX_COMBINE(0, 0, X509_ATTRIBUTE_SET) 94 } ASN1_SEQUENCE_END(X509_ATTRIBUTE) 95 96 97 X509_ATTRIBUTE * 98 d2i_X509_ATTRIBUTE(X509_ATTRIBUTE **a, const unsigned char **in, long len) 99 { 100 return (X509_ATTRIBUTE *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 101 &X509_ATTRIBUTE_it); 102 } 103 104 int 105 i2d_X509_ATTRIBUTE(X509_ATTRIBUTE *a, unsigned char **out) 106 { 107 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ATTRIBUTE_it); 108 } 109 110 X509_ATTRIBUTE * 111 X509_ATTRIBUTE_new(void) 112 { 113 return (X509_ATTRIBUTE *)ASN1_item_new(&X509_ATTRIBUTE_it); 114 } 115 116 void 117 X509_ATTRIBUTE_free(X509_ATTRIBUTE *a) 118 { 119 ASN1_item_free((ASN1_VALUE *)a, &X509_ATTRIBUTE_it); 120 } 121 122 X509_ATTRIBUTE * 123 X509_ATTRIBUTE_dup(X509_ATTRIBUTE *x) 124 { 125 return ASN1_item_dup(ASN1_ITEM_rptr(X509_ATTRIBUTE), x); 126 } 127 128 X509_ATTRIBUTE * 129 X509_ATTRIBUTE_create(int nid, int atrtype, void *value) 130 { 131 X509_ATTRIBUTE *ret = NULL; 132 ASN1_TYPE *val = NULL; 133 134 if ((ret = X509_ATTRIBUTE_new()) == NULL) 135 return (NULL); 136 ret->object = OBJ_nid2obj(nid); 137 ret->single = 0; 138 if ((ret->value.set = sk_ASN1_TYPE_new_null()) == NULL) 139 goto err; 140 if ((val = ASN1_TYPE_new()) == NULL) 141 goto err; 142 if (!sk_ASN1_TYPE_push(ret->value.set, val)) 143 goto err; 144 145 ASN1_TYPE_set(val, atrtype, value); 146 return (ret); 147 148 err: 149 if (ret != NULL) 150 X509_ATTRIBUTE_free(ret); 151 if (val != NULL) 152 ASN1_TYPE_free(val); 153 return (NULL); 154 } 155