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source: vbox/trunk/src/libs/openssl-1.1.1l/crypto/x509v3/v3_pci.c@ 91772

Last change on this file since 91772 was 91772, checked in by vboxsync, 3 years ago

openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126
File size: 11.5 KB
Line 
1/*
2 * Copyright 2004-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*
11 * This file is dual-licensed and is also available under the following
12 * terms:
13 *
14 * Copyright (c) 2004 Kungliga Tekniska Högskolan
15 * (Royal Institute of Technology, Stockholm, Sweden).
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 *
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 *
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
28 *
29 * 3. Neither the name of the Institute nor the names of its contributors
30 * may be used to endorse or promote products derived from this software
31 * without specific prior written permission.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 */
45
46#include <stdio.h>
47#include "internal/cryptlib.h"
48#include <openssl/conf.h>
49#include <openssl/x509v3.h>
50#include "ext_dat.h"
51
52static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
53 BIO *out, int indent);
54static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
55 X509V3_CTX *ctx, char *str);
56
57const X509V3_EXT_METHOD v3_pci =
58 { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
59 0, 0, 0, 0,
60 0, 0,
61 NULL, NULL,
62 (X509V3_EXT_I2R)i2r_pci,
63 (X509V3_EXT_R2I)r2i_pci,
64 NULL,
65};
66
67static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
68 BIO *out, int indent)
69{
70 BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
71 if (pci->pcPathLengthConstraint)
72 i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
73 else
74 BIO_printf(out, "infinite");
75 BIO_puts(out, "\n");
76 BIO_printf(out, "%*sPolicy Language: ", indent, "");
77 i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
78 BIO_puts(out, "\n");
79 if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
80 BIO_printf(out, "%*sPolicy Text: %.*s\n", indent, "",
81 pci->proxyPolicy->policy->length,
82 pci->proxyPolicy->policy->data);
83 return 1;
84}
85
86static int process_pci_value(CONF_VALUE *val,
87 ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
88 ASN1_OCTET_STRING **policy)
89{
90 int free_policy = 0;
91
92 if (strcmp(val->name, "language") == 0) {
93 if (*language) {
94 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
95 X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
96 X509V3_conf_err(val);
97 return 0;
98 }
99 if ((*language = OBJ_txt2obj(val->value, 0)) == NULL) {
100 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
101 X509V3_R_INVALID_OBJECT_IDENTIFIER);
102 X509V3_conf_err(val);
103 return 0;
104 }
105 } else if (strcmp(val->name, "pathlen") == 0) {
106 if (*pathlen) {
107 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
108 X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
109 X509V3_conf_err(val);
110 return 0;
111 }
112 if (!X509V3_get_value_int(val, pathlen)) {
113 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
114 X509V3_R_POLICY_PATH_LENGTH);
115 X509V3_conf_err(val);
116 return 0;
117 }
118 } else if (strcmp(val->name, "policy") == 0) {
119 unsigned char *tmp_data = NULL;
120 long val_len;
121 if (!*policy) {
122 *policy = ASN1_OCTET_STRING_new();
123 if (*policy == NULL) {
124 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
125 X509V3_conf_err(val);
126 return 0;
127 }
128 free_policy = 1;
129 }
130 if (strncmp(val->value, "hex:", 4) == 0) {
131 unsigned char *tmp_data2 =
132 OPENSSL_hexstr2buf(val->value + 4, &val_len);
133
134 if (!tmp_data2) {
135 X509V3_conf_err(val);
136 goto err;
137 }
138
139 tmp_data = OPENSSL_realloc((*policy)->data,
140 (*policy)->length + val_len + 1);
141 if (tmp_data) {
142 (*policy)->data = tmp_data;
143 memcpy(&(*policy)->data[(*policy)->length],
144 tmp_data2, val_len);
145 (*policy)->length += val_len;
146 (*policy)->data[(*policy)->length] = '\0';
147 } else {
148 OPENSSL_free(tmp_data2);
149 /*
150 * realloc failure implies the original data space is b0rked
151 * too!
152 */
153 OPENSSL_free((*policy)->data);
154 (*policy)->data = NULL;
155 (*policy)->length = 0;
156 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
157 X509V3_conf_err(val);
158 goto err;
159 }
160 OPENSSL_free(tmp_data2);
161 } else if (strncmp(val->value, "file:", 5) == 0) {
162 unsigned char buf[2048];
163 int n;
164 BIO *b = BIO_new_file(val->value + 5, "r");
165 if (!b) {
166 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_BIO_LIB);
167 X509V3_conf_err(val);
168 goto err;
169 }
170 while ((n = BIO_read(b, buf, sizeof(buf))) > 0
171 || (n == 0 && BIO_should_retry(b))) {
172 if (!n)
173 continue;
174
175 tmp_data = OPENSSL_realloc((*policy)->data,
176 (*policy)->length + n + 1);
177
178 if (!tmp_data) {
179 OPENSSL_free((*policy)->data);
180 (*policy)->data = NULL;
181 (*policy)->length = 0;
182 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
183 ERR_R_MALLOC_FAILURE);
184 X509V3_conf_err(val);
185 BIO_free_all(b);
186 goto err;
187 }
188
189 (*policy)->data = tmp_data;
190 memcpy(&(*policy)->data[(*policy)->length], buf, n);
191 (*policy)->length += n;
192 (*policy)->data[(*policy)->length] = '\0';
193 }
194 BIO_free_all(b);
195
196 if (n < 0) {
197 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_BIO_LIB);
198 X509V3_conf_err(val);
199 goto err;
200 }
201 } else if (strncmp(val->value, "text:", 5) == 0) {
202 val_len = strlen(val->value + 5);
203 tmp_data = OPENSSL_realloc((*policy)->data,
204 (*policy)->length + val_len + 1);
205 if (tmp_data) {
206 (*policy)->data = tmp_data;
207 memcpy(&(*policy)->data[(*policy)->length],
208 val->value + 5, val_len);
209 (*policy)->length += val_len;
210 (*policy)->data[(*policy)->length] = '\0';
211 } else {
212 /*
213 * realloc failure implies the original data space is b0rked
214 * too!
215 */
216 OPENSSL_free((*policy)->data);
217 (*policy)->data = NULL;
218 (*policy)->length = 0;
219 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
220 X509V3_conf_err(val);
221 goto err;
222 }
223 } else {
224 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
225 X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
226 X509V3_conf_err(val);
227 goto err;
228 }
229 if (!tmp_data) {
230 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
231 X509V3_conf_err(val);
232 goto err;
233 }
234 }
235 return 1;
236 err:
237 if (free_policy) {
238 ASN1_OCTET_STRING_free(*policy);
239 *policy = NULL;
240 }
241 return 0;
242}
243
244static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
245 X509V3_CTX *ctx, char *value)
246{
247 PROXY_CERT_INFO_EXTENSION *pci = NULL;
248 STACK_OF(CONF_VALUE) *vals;
249 ASN1_OBJECT *language = NULL;
250 ASN1_INTEGER *pathlen = NULL;
251 ASN1_OCTET_STRING *policy = NULL;
252 int i, j;
253
254 vals = X509V3_parse_list(value);
255 for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
256 CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
257 if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
258 X509V3err(X509V3_F_R2I_PCI,
259 X509V3_R_INVALID_PROXY_POLICY_SETTING);
260 X509V3_conf_err(cnf);
261 goto err;
262 }
263 if (*cnf->name == '@') {
264 STACK_OF(CONF_VALUE) *sect;
265 int success_p = 1;
266
267 sect = X509V3_get_section(ctx, cnf->name + 1);
268 if (!sect) {
269 X509V3err(X509V3_F_R2I_PCI, X509V3_R_INVALID_SECTION);
270 X509V3_conf_err(cnf);
271 goto err;
272 }
273 for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) {
274 success_p =
275 process_pci_value(sk_CONF_VALUE_value(sect, j),
276 &language, &pathlen, &policy);
277 }
278 X509V3_section_free(ctx, sect);
279 if (!success_p)
280 goto err;
281 } else {
282 if (!process_pci_value(cnf, &language, &pathlen, &policy)) {
283 X509V3_conf_err(cnf);
284 goto err;
285 }
286 }
287 }
288
289 /* Language is mandatory */
290 if (!language) {
291 X509V3err(X509V3_F_R2I_PCI,
292 X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
293 goto err;
294 }
295 i = OBJ_obj2nid(language);
296 if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy) {
297 X509V3err(X509V3_F_R2I_PCI,
298 X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
299 goto err;
300 }
301
302 pci = PROXY_CERT_INFO_EXTENSION_new();
303 if (pci == NULL) {
304 X509V3err(X509V3_F_R2I_PCI, ERR_R_MALLOC_FAILURE);
305 goto err;
306 }
307
308 pci->proxyPolicy->policyLanguage = language;
309 language = NULL;
310 pci->proxyPolicy->policy = policy;
311 policy = NULL;
312 pci->pcPathLengthConstraint = pathlen;
313 pathlen = NULL;
314 goto end;
315 err:
316 ASN1_OBJECT_free(language);
317 ASN1_INTEGER_free(pathlen);
318 pathlen = NULL;
319 ASN1_OCTET_STRING_free(policy);
320 policy = NULL;
321 PROXY_CERT_INFO_EXTENSION_free(pci);
322 pci = NULL;
323 end:
324 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
325 return pci;
326}
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