1 /* $OpenBSD: x_algor.c,v 1.40 2024/04/09 13:55:02 beck Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2000.
4 */
5 /* ====================================================================
6 * Copyright (c) 2000 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 <stddef.h>
60
61 #include <openssl/asn1.h>
62 #include <openssl/asn1t.h>
63 #include <openssl/x509.h>
64
65 #include "x509_local.h"
66
67 static const ASN1_TEMPLATE X509_ALGOR_seq_tt[] = {
68 {
69 .offset = offsetof(X509_ALGOR, algorithm),
70 .field_name = "algorithm",
71 .item = &ASN1_OBJECT_it,
72 },
73 {
74 .flags = ASN1_TFLG_OPTIONAL,
75 .offset = offsetof(X509_ALGOR, parameter),
76 .field_name = "parameter",
77 .item = &ASN1_ANY_it,
78 },
79 };
80
81 const ASN1_ITEM X509_ALGOR_it = {
82 .itype = ASN1_ITYPE_SEQUENCE,
83 .utype = V_ASN1_SEQUENCE,
84 .templates = X509_ALGOR_seq_tt,
85 .tcount = sizeof(X509_ALGOR_seq_tt) / sizeof(ASN1_TEMPLATE),
86 .size = sizeof(X509_ALGOR),
87 .sname = "X509_ALGOR",
88 };
89
90 static const ASN1_TEMPLATE X509_ALGORS_item_tt = {
91 .flags = ASN1_TFLG_SEQUENCE_OF,
92 .tag = 0,
93 .offset = 0,
94 .field_name = "algorithms",
95 .item = &X509_ALGOR_it,
96 };
97
98 const ASN1_ITEM X509_ALGORS_it = {
99 .itype = ASN1_ITYPE_PRIMITIVE,
100 .utype = -1,
101 .templates = &X509_ALGORS_item_tt,
102 .tcount = 0,
103 .funcs = NULL,
104 .size = 0,
105 .sname = "X509_ALGORS",
106 };
107
108 X509_ALGOR *
d2i_X509_ALGOR(X509_ALGOR ** a,const unsigned char ** in,long len)109 d2i_X509_ALGOR(X509_ALGOR **a, const unsigned char **in, long len)
110 {
111 return (X509_ALGOR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
112 &X509_ALGOR_it);
113 }
114 LCRYPTO_ALIAS(d2i_X509_ALGOR);
115
116 int
i2d_X509_ALGOR(X509_ALGOR * a,unsigned char ** out)117 i2d_X509_ALGOR(X509_ALGOR *a, unsigned char **out)
118 {
119 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGOR_it);
120 }
121 LCRYPTO_ALIAS(i2d_X509_ALGOR);
122
123 X509_ALGOR *
X509_ALGOR_new(void)124 X509_ALGOR_new(void)
125 {
126 return (X509_ALGOR *)ASN1_item_new(&X509_ALGOR_it);
127 }
128 LCRYPTO_ALIAS(X509_ALGOR_new);
129
130 void
X509_ALGOR_free(X509_ALGOR * a)131 X509_ALGOR_free(X509_ALGOR *a)
132 {
133 ASN1_item_free((ASN1_VALUE *)a, &X509_ALGOR_it);
134 }
135 LCRYPTO_ALIAS(X509_ALGOR_free);
136
137 X509_ALGORS *
d2i_X509_ALGORS(X509_ALGORS ** a,const unsigned char ** in,long len)138 d2i_X509_ALGORS(X509_ALGORS **a, const unsigned char **in, long len)
139 {
140 return (X509_ALGORS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
141 &X509_ALGORS_it);
142 }
143 LCRYPTO_ALIAS(d2i_X509_ALGORS);
144
145 int
i2d_X509_ALGORS(X509_ALGORS * a,unsigned char ** out)146 i2d_X509_ALGORS(X509_ALGORS *a, unsigned char **out)
147 {
148 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGORS_it);
149 }
150 LCRYPTO_ALIAS(i2d_X509_ALGORS);
151
152 X509_ALGOR *
X509_ALGOR_dup(X509_ALGOR * x)153 X509_ALGOR_dup(X509_ALGOR *x)
154 {
155 return ASN1_item_dup(&X509_ALGOR_it, x);
156 }
157 LCRYPTO_ALIAS(X509_ALGOR_dup);
158
159 static int
X509_ALGOR_set0_obj(X509_ALGOR * alg,ASN1_OBJECT * aobj)160 X509_ALGOR_set0_obj(X509_ALGOR *alg, ASN1_OBJECT *aobj)
161 {
162 ASN1_OBJECT_free(alg->algorithm);
163 alg->algorithm = aobj;
164
165 return 1;
166 }
167
168 static int
X509_ALGOR_set_obj_by_nid(X509_ALGOR * alg,int nid)169 X509_ALGOR_set_obj_by_nid(X509_ALGOR *alg, int nid)
170 {
171 ASN1_OBJECT *aobj;
172
173 if ((aobj = OBJ_nid2obj(nid)) == NULL)
174 return 0;
175 if (!X509_ALGOR_set0_obj(alg, aobj))
176 return 0;
177
178 return 1;
179 }
180
181 static int
X509_ALGOR_set0_parameter(X509_ALGOR * alg,int parameter_type,void * parameter_value)182 X509_ALGOR_set0_parameter(X509_ALGOR *alg, int parameter_type,
183 void *parameter_value)
184 {
185 if (parameter_type == V_ASN1_UNDEF) {
186 ASN1_TYPE_free(alg->parameter);
187 alg->parameter = NULL;
188
189 return 1;
190 }
191
192 if (alg->parameter == NULL)
193 alg->parameter = ASN1_TYPE_new();
194 if (alg->parameter == NULL)
195 return 0;
196
197 if (parameter_type != 0)
198 ASN1_TYPE_set(alg->parameter, parameter_type, parameter_value);
199
200 return 1;
201 }
202
203 int
X509_ALGOR_set0_by_nid(X509_ALGOR * alg,int nid,int parameter_type,void * parameter_value)204 X509_ALGOR_set0_by_nid(X509_ALGOR *alg, int nid, int parameter_type,
205 void *parameter_value)
206 {
207 if (alg == NULL)
208 return 0;
209
210 if (!X509_ALGOR_set_obj_by_nid(alg, nid))
211 return 0;
212
213 if (!X509_ALGOR_set0_parameter(alg, parameter_type, parameter_value))
214 return 0;
215
216 return 1;
217 }
218
219 int
X509_ALGOR_set0(X509_ALGOR * alg,ASN1_OBJECT * aobj,int parameter_type,void * parameter_value)220 X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int parameter_type,
221 void *parameter_value)
222 {
223 if (alg == NULL)
224 return 0;
225
226 /* Set parameter first to preserve public API behavior on failure. */
227 if (!X509_ALGOR_set0_parameter(alg, parameter_type, parameter_value))
228 return 0;
229
230 if (!X509_ALGOR_set0_obj(alg, aobj))
231 return 0;
232
233 return 1;
234 }
235 LCRYPTO_ALIAS(X509_ALGOR_set0);
236
237 void
X509_ALGOR_get0(const ASN1_OBJECT ** out_aobj,int * out_type,const void ** out_value,const X509_ALGOR * alg)238 X509_ALGOR_get0(const ASN1_OBJECT **out_aobj, int *out_type,
239 const void **out_value, const X509_ALGOR *alg)
240 {
241 int type = V_ASN1_UNDEF;
242 const void *value = NULL;
243
244 if (out_aobj != NULL)
245 *out_aobj = alg->algorithm;
246
247 /* Ensure out_value is not left uninitialized if out_type is NULL. */
248 if (out_value != NULL)
249 *out_value = NULL;
250
251 if (out_type == NULL)
252 return;
253
254 if (alg->parameter != NULL) {
255 type = alg->parameter->type;
256 value = alg->parameter->value.ptr;
257 }
258
259 *out_type = type;
260 if (out_value != NULL)
261 *out_value = value;
262 }
263 LCRYPTO_ALIAS(X509_ALGOR_get0);
264
265 int
X509_ALGOR_set_evp_md(X509_ALGOR * alg,const EVP_MD * md)266 X509_ALGOR_set_evp_md(X509_ALGOR *alg, const EVP_MD *md)
267 {
268 int parameter_type = V_ASN1_NULL;
269 int nid = EVP_MD_type(md);
270
271 if ((EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT) != 0)
272 parameter_type = V_ASN1_UNDEF;
273
274 if (!X509_ALGOR_set0_by_nid(alg, nid, parameter_type, NULL))
275 return 0;
276
277 return 1;
278 }
279
280 int
X509_ALGOR_cmp(const X509_ALGOR * a,const X509_ALGOR * b)281 X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
282 {
283 int cmp;
284
285 if ((cmp = OBJ_cmp(a->algorithm, b->algorithm)) != 0)
286 return cmp;
287
288 if (a->parameter == NULL && b->parameter == NULL)
289 return 0;
290
291 return ASN1_TYPE_cmp(a->parameter, b->parameter);
292 }
293 LCRYPTO_ALIAS(X509_ALGOR_cmp);
294