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diff --git a/src/lib/libcrypto/asn1/x_algor.c b/src/lib/libcrypto/asn1/x_algor.c
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1/* $OpenBSD: x_algor.c,v 1.41 2024/07/08 14:48:49 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
67static 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
81const 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};
89LCRYPTO_ALIAS(X509_ALGOR_it);
90
91static const ASN1_TEMPLATE X509_ALGORS_item_tt = {
92 .flags = ASN1_TFLG_SEQUENCE_OF,
93 .tag = 0,
94 .offset = 0,
95 .field_name = "algorithms",
96 .item = &X509_ALGOR_it,
97};
98
99const ASN1_ITEM X509_ALGORS_it = {
100 .itype = ASN1_ITYPE_PRIMITIVE,
101 .utype = -1,
102 .templates = &X509_ALGORS_item_tt,
103 .tcount = 0,
104 .funcs = NULL,
105 .size = 0,
106 .sname = "X509_ALGORS",
107};
108LCRYPTO_ALIAS(X509_ALGORS_it);
109
110X509_ALGOR *
111d2i_X509_ALGOR(X509_ALGOR **a, const unsigned char **in, long len)
112{
113 return (X509_ALGOR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
114 &X509_ALGOR_it);
115}
116LCRYPTO_ALIAS(d2i_X509_ALGOR);
117
118int
119i2d_X509_ALGOR(X509_ALGOR *a, unsigned char **out)
120{
121 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGOR_it);
122}
123LCRYPTO_ALIAS(i2d_X509_ALGOR);
124
125X509_ALGOR *
126X509_ALGOR_new(void)
127{
128 return (X509_ALGOR *)ASN1_item_new(&X509_ALGOR_it);
129}
130LCRYPTO_ALIAS(X509_ALGOR_new);
131
132void
133X509_ALGOR_free(X509_ALGOR *a)
134{
135 ASN1_item_free((ASN1_VALUE *)a, &X509_ALGOR_it);
136}
137LCRYPTO_ALIAS(X509_ALGOR_free);
138
139X509_ALGORS *
140d2i_X509_ALGORS(X509_ALGORS **a, const unsigned char **in, long len)
141{
142 return (X509_ALGORS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
143 &X509_ALGORS_it);
144}
145LCRYPTO_ALIAS(d2i_X509_ALGORS);
146
147int
148i2d_X509_ALGORS(X509_ALGORS *a, unsigned char **out)
149{
150 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGORS_it);
151}
152LCRYPTO_ALIAS(i2d_X509_ALGORS);
153
154X509_ALGOR *
155X509_ALGOR_dup(X509_ALGOR *x)
156{
157 return ASN1_item_dup(&X509_ALGOR_it, x);
158}
159LCRYPTO_ALIAS(X509_ALGOR_dup);
160
161static int
162X509_ALGOR_set0_obj(X509_ALGOR *alg, ASN1_OBJECT *aobj)
163{
164 ASN1_OBJECT_free(alg->algorithm);
165 alg->algorithm = aobj;
166
167 return 1;
168}
169
170static int
171X509_ALGOR_set_obj_by_nid(X509_ALGOR *alg, int nid)
172{
173 ASN1_OBJECT *aobj;
174
175 if ((aobj = OBJ_nid2obj(nid)) == NULL)
176 return 0;
177 if (!X509_ALGOR_set0_obj(alg, aobj))
178 return 0;
179
180 return 1;
181}
182
183static int
184X509_ALGOR_set0_parameter(X509_ALGOR *alg, int parameter_type,
185 void *parameter_value)
186{
187 if (parameter_type == V_ASN1_UNDEF) {
188 ASN1_TYPE_free(alg->parameter);
189 alg->parameter = NULL;
190
191 return 1;
192 }
193
194 if (alg->parameter == NULL)
195 alg->parameter = ASN1_TYPE_new();
196 if (alg->parameter == NULL)
197 return 0;
198
199 if (parameter_type != 0)
200 ASN1_TYPE_set(alg->parameter, parameter_type, parameter_value);
201
202 return 1;
203}
204
205int
206X509_ALGOR_set0_by_nid(X509_ALGOR *alg, int nid, int parameter_type,
207 void *parameter_value)
208{
209 if (alg == NULL)
210 return 0;
211
212 if (!X509_ALGOR_set_obj_by_nid(alg, nid))
213 return 0;
214
215 if (!X509_ALGOR_set0_parameter(alg, parameter_type, parameter_value))
216 return 0;
217
218 return 1;
219}
220
221int
222X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int parameter_type,
223 void *parameter_value)
224{
225 if (alg == NULL)
226 return 0;
227
228 /* Set parameter first to preserve public API behavior on failure. */
229 if (!X509_ALGOR_set0_parameter(alg, parameter_type, parameter_value))
230 return 0;
231
232 if (!X509_ALGOR_set0_obj(alg, aobj))
233 return 0;
234
235 return 1;
236}
237LCRYPTO_ALIAS(X509_ALGOR_set0);
238
239void
240X509_ALGOR_get0(const ASN1_OBJECT **out_aobj, int *out_type,
241 const void **out_value, const X509_ALGOR *alg)
242{
243 int type = V_ASN1_UNDEF;
244 const void *value = NULL;
245
246 if (out_aobj != NULL)
247 *out_aobj = alg->algorithm;
248
249 /* Ensure out_value is not left uninitialized if out_type is NULL. */
250 if (out_value != NULL)
251 *out_value = NULL;
252
253 if (out_type == NULL)
254 return;
255
256 if (alg->parameter != NULL) {
257 type = alg->parameter->type;
258 value = alg->parameter->value.ptr;
259 }
260
261 *out_type = type;
262 if (out_value != NULL)
263 *out_value = value;
264}
265LCRYPTO_ALIAS(X509_ALGOR_get0);
266
267int
268X509_ALGOR_set_evp_md(X509_ALGOR *alg, const EVP_MD *md)
269{
270 int parameter_type = V_ASN1_NULL;
271 int nid = EVP_MD_type(md);
272
273 if ((EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT) != 0)
274 parameter_type = V_ASN1_UNDEF;
275
276 if (!X509_ALGOR_set0_by_nid(alg, nid, parameter_type, NULL))
277 return 0;
278
279 return 1;
280}
281
282int
283X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
284{
285 int cmp;
286
287 if ((cmp = OBJ_cmp(a->algorithm, b->algorithm)) != 0)
288 return cmp;
289
290 if (a->parameter == NULL && b->parameter == NULL)
291 return 0;
292
293 return ASN1_TYPE_cmp(a->parameter, b->parameter);
294}
295LCRYPTO_ALIAS(X509_ALGOR_cmp);
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