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diff --git a/src/lib/libcrypto/asn1/x_req.c b/src/lib/libcrypto/asn1/x_req.c
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1/* $OpenBSD: x_req.c,v 1.23 2024/07/08 14:48:49 beck 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/x509.h>
63
64#include "x509_local.h"
65
66/* X509_REQ_INFO is handled in an unusual way to get round
67 * invalid encodings. Some broken certificate requests don't
68 * encode the attributes field if it is empty. This is in
69 * violation of PKCS#10 but we need to tolerate it. We do
70 * this by making the attributes field OPTIONAL then using
71 * the callback to initialise it to an empty STACK.
72 *
73 * This means that the field will be correctly encoded unless
74 * we NULL out the field.
75 *
76 * As a result we no longer need the req_kludge field because
77 * the information is now contained in the attributes field:
78 * 1. If it is NULL then it's the invalid omission.
79 * 2. If it is empty it is the correct encoding.
80 * 3. If it is not empty then some attributes are present.
81 *
82 */
83
84static int
85rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
86{
87 X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
88
89 if (operation == ASN1_OP_NEW_POST) {
90 rinf->attributes = sk_X509_ATTRIBUTE_new_null();
91 if (!rinf->attributes)
92 return 0;
93 }
94 return 1;
95}
96
97static const ASN1_AUX X509_REQ_INFO_aux = {
98 .flags = ASN1_AFLG_ENCODING,
99 .asn1_cb = rinf_cb,
100 .enc_offset = offsetof(X509_REQ_INFO, enc),
101};
102static const ASN1_TEMPLATE X509_REQ_INFO_seq_tt[] = {
103 {
104 .offset = offsetof(X509_REQ_INFO, version),
105 .field_name = "version",
106 .item = &ASN1_INTEGER_it,
107 },
108 {
109 .offset = offsetof(X509_REQ_INFO, subject),
110 .field_name = "subject",
111 .item = &X509_NAME_it,
112 },
113 {
114 .offset = offsetof(X509_REQ_INFO, pubkey),
115 .field_name = "pubkey",
116 .item = &X509_PUBKEY_it,
117 },
118 /* This isn't really OPTIONAL but it gets round invalid
119 * encodings
120 */
121 {
122 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SET_OF | ASN1_TFLG_OPTIONAL,
123 .offset = offsetof(X509_REQ_INFO, attributes),
124 .field_name = "attributes",
125 .item = &X509_ATTRIBUTE_it,
126 },
127};
128
129const ASN1_ITEM X509_REQ_INFO_it = {
130 .itype = ASN1_ITYPE_SEQUENCE,
131 .utype = V_ASN1_SEQUENCE,
132 .templates = X509_REQ_INFO_seq_tt,
133 .tcount = sizeof(X509_REQ_INFO_seq_tt) / sizeof(ASN1_TEMPLATE),
134 .funcs = &X509_REQ_INFO_aux,
135 .size = sizeof(X509_REQ_INFO),
136 .sname = "X509_REQ_INFO",
137};
138LCRYPTO_ALIAS(X509_REQ_INFO_it);
139
140
141X509_REQ_INFO *
142d2i_X509_REQ_INFO(X509_REQ_INFO **a, const unsigned char **in, long len)
143{
144 return (X509_REQ_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
145 &X509_REQ_INFO_it);
146}
147LCRYPTO_ALIAS(d2i_X509_REQ_INFO);
148
149int
150i2d_X509_REQ_INFO(X509_REQ_INFO *a, unsigned char **out)
151{
152 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REQ_INFO_it);
153}
154LCRYPTO_ALIAS(i2d_X509_REQ_INFO);
155
156X509_REQ_INFO *
157X509_REQ_INFO_new(void)
158{
159 return (X509_REQ_INFO *)ASN1_item_new(&X509_REQ_INFO_it);
160}
161LCRYPTO_ALIAS(X509_REQ_INFO_new);
162
163void
164X509_REQ_INFO_free(X509_REQ_INFO *a)
165{
166 ASN1_item_free((ASN1_VALUE *)a, &X509_REQ_INFO_it);
167}
168LCRYPTO_ALIAS(X509_REQ_INFO_free);
169
170static const ASN1_AUX X509_REQ_aux = {
171 .app_data = NULL,
172 .flags = ASN1_AFLG_REFCOUNT,
173 .ref_offset = offsetof(X509_REQ, references),
174 .ref_lock = CRYPTO_LOCK_X509_REQ,
175};
176static const ASN1_TEMPLATE X509_REQ_seq_tt[] = {
177 {
178 .offset = offsetof(X509_REQ, req_info),
179 .field_name = "req_info",
180 .item = &X509_REQ_INFO_it,
181 },
182 {
183 .offset = offsetof(X509_REQ, sig_alg),
184 .field_name = "sig_alg",
185 .item = &X509_ALGOR_it,
186 },
187 {
188 .offset = offsetof(X509_REQ, signature),
189 .field_name = "signature",
190 .item = &ASN1_BIT_STRING_it,
191 },
192};
193
194const ASN1_ITEM X509_REQ_it = {
195 .itype = ASN1_ITYPE_SEQUENCE,
196 .utype = V_ASN1_SEQUENCE,
197 .templates = X509_REQ_seq_tt,
198 .tcount = sizeof(X509_REQ_seq_tt) / sizeof(ASN1_TEMPLATE),
199 .funcs = &X509_REQ_aux,
200 .size = sizeof(X509_REQ),
201 .sname = "X509_REQ",
202};
203LCRYPTO_ALIAS(X509_REQ_it);
204
205
206X509_REQ *
207d2i_X509_REQ(X509_REQ **a, const unsigned char **in, long len)
208{
209 return (X509_REQ *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
210 &X509_REQ_it);
211}
212LCRYPTO_ALIAS(d2i_X509_REQ);
213
214int
215i2d_X509_REQ(X509_REQ *a, unsigned char **out)
216{
217 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REQ_it);
218}
219LCRYPTO_ALIAS(i2d_X509_REQ);
220
221X509_REQ *
222X509_REQ_new(void)
223{
224 return (X509_REQ *)ASN1_item_new(&X509_REQ_it);
225}
226LCRYPTO_ALIAS(X509_REQ_new);
227
228void
229X509_REQ_free(X509_REQ *a)
230{
231 ASN1_item_free((ASN1_VALUE *)a, &X509_REQ_it);
232}
233LCRYPTO_ALIAS(X509_REQ_free);
234
235X509_REQ *
236X509_REQ_dup(X509_REQ *x)
237{
238 return ASN1_item_dup(&X509_REQ_it, x);
239}
240LCRYPTO_ALIAS(X509_REQ_dup);
241
242int
243X509_REQ_get_signature_nid(const X509_REQ *req)
244{
245 return OBJ_obj2nid(req->sig_alg->algorithm);
246}
247LCRYPTO_ALIAS(X509_REQ_get_signature_nid);
248
249void
250X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
251 const X509_ALGOR **palg)
252{
253 if (psig != NULL)
254 *psig = req->signature;
255 if (palg != NULL)
256 *palg = req->sig_alg;
257}
258LCRYPTO_ALIAS(X509_REQ_get0_signature);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-23 13:32:01 +0000