2 * Copyright 2004-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
11 * This file is dual-licensed and is also available under the following
14 * Copyright (c) 2004 Kungliga Tekniska Högskolan
15 * (Royal Institute of Technology, Stockholm, Sweden).
16 * All rights reserved.
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19 * modification, are permitted provided that the following conditions
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23 * notice, this list of conditions and the following disclaimer.
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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
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36 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 #include "internal/cryptlib.h"
48 #include <openssl/conf.h>
49 #include <openssl/x509v3.h>
52 DEFINE_STACK_OF(CONF_VALUE)
54 static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
55 BIO *out, int indent);
56 static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
57 X509V3_CTX *ctx, char *str);
59 const X509V3_EXT_METHOD v3_pci =
60 { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
64 (X509V3_EXT_I2R)i2r_pci,
65 (X509V3_EXT_R2I)r2i_pci,
69 static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
72 BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
73 if (pci->pcPathLengthConstraint)
74 i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
76 BIO_printf(out, "infinite");
78 BIO_printf(out, "%*sPolicy Language: ", indent, "");
79 i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
80 if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
81 BIO_printf(out, "\n%*sPolicy Text: %s", indent, "",
82 pci->proxyPolicy->policy->data);
86 static int process_pci_value(CONF_VALUE *val,
87 ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
88 ASN1_OCTET_STRING **policy)
92 if (strcmp(val->name, "language") == 0) {
94 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
95 X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
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);
105 } else if (strcmp(val->name, "pathlen") == 0) {
107 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
108 X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
109 X509V3_conf_err(val);
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);
118 } else if (strcmp(val->name, "policy") == 0) {
119 unsigned char *tmp_data = NULL;
122 if (*policy == NULL) {
123 *policy = ASN1_OCTET_STRING_new();
124 if (*policy == NULL) {
125 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
126 X509V3_conf_err(val);
131 if (strncmp(val->value, "hex:", 4) == 0) {
132 unsigned char *tmp_data2 =
133 OPENSSL_hexstr2buf(val->value + 4, &val_len);
136 X509V3_conf_err(val);
140 tmp_data = OPENSSL_realloc((*policy)->data,
141 (*policy)->length + val_len + 1);
143 (*policy)->data = tmp_data;
144 memcpy(&(*policy)->data[(*policy)->length],
146 (*policy)->length += val_len;
147 (*policy)->data[(*policy)->length] = '\0';
149 OPENSSL_free(tmp_data2);
151 * realloc failure implies the original data space is b0rked
154 OPENSSL_free((*policy)->data);
155 (*policy)->data = NULL;
156 (*policy)->length = 0;
157 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
158 X509V3_conf_err(val);
161 OPENSSL_free(tmp_data2);
162 } else if (strncmp(val->value, "file:", 5) == 0) {
163 unsigned char buf[2048];
165 BIO *b = BIO_new_file(val->value + 5, "r");
167 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_BIO_LIB);
168 X509V3_conf_err(val);
171 while ((n = BIO_read(b, buf, sizeof(buf))) > 0
172 || (n == 0 && BIO_should_retry(b))) {
176 tmp_data = OPENSSL_realloc((*policy)->data,
177 (*policy)->length + n + 1);
180 OPENSSL_free((*policy)->data);
181 (*policy)->data = NULL;
182 (*policy)->length = 0;
183 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
184 ERR_R_MALLOC_FAILURE);
185 X509V3_conf_err(val);
190 (*policy)->data = tmp_data;
191 memcpy(&(*policy)->data[(*policy)->length], buf, n);
192 (*policy)->length += n;
193 (*policy)->data[(*policy)->length] = '\0';
198 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_BIO_LIB);
199 X509V3_conf_err(val);
202 } else if (strncmp(val->value, "text:", 5) == 0) {
203 val_len = strlen(val->value + 5);
204 tmp_data = OPENSSL_realloc((*policy)->data,
205 (*policy)->length + val_len + 1);
207 (*policy)->data = tmp_data;
208 memcpy(&(*policy)->data[(*policy)->length],
209 val->value + 5, val_len);
210 (*policy)->length += val_len;
211 (*policy)->data[(*policy)->length] = '\0';
214 * realloc failure implies the original data space is b0rked
217 OPENSSL_free((*policy)->data);
218 (*policy)->data = NULL;
219 (*policy)->length = 0;
220 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
221 X509V3_conf_err(val);
225 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
226 X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
227 X509V3_conf_err(val);
231 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
232 X509V3_conf_err(val);
239 ASN1_OCTET_STRING_free(*policy);
245 static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
246 X509V3_CTX *ctx, char *value)
248 PROXY_CERT_INFO_EXTENSION *pci = NULL;
249 STACK_OF(CONF_VALUE) *vals;
250 ASN1_OBJECT *language = NULL;
251 ASN1_INTEGER *pathlen = NULL;
252 ASN1_OCTET_STRING *policy = NULL;
255 vals = X509V3_parse_list(value);
256 for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
257 CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
258 if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
259 X509V3err(X509V3_F_R2I_PCI,
260 X509V3_R_INVALID_PROXY_POLICY_SETTING);
261 X509V3_conf_err(cnf);
264 if (*cnf->name == '@') {
265 STACK_OF(CONF_VALUE) *sect;
268 sect = X509V3_get_section(ctx, cnf->name + 1);
270 X509V3err(X509V3_F_R2I_PCI, X509V3_R_INVALID_SECTION);
271 X509V3_conf_err(cnf);
274 for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) {
276 process_pci_value(sk_CONF_VALUE_value(sect, j),
277 &language, &pathlen, &policy);
279 X509V3_section_free(ctx, sect);
283 if (!process_pci_value(cnf, &language, &pathlen, &policy)) {
284 X509V3_conf_err(cnf);
290 /* Language is mandatory */
292 X509V3err(X509V3_F_R2I_PCI,
293 X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
296 i = OBJ_obj2nid(language);
297 if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy) {
298 X509V3err(X509V3_F_R2I_PCI,
299 X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
303 pci = PROXY_CERT_INFO_EXTENSION_new();
305 X509V3err(X509V3_F_R2I_PCI, ERR_R_MALLOC_FAILURE);
309 pci->proxyPolicy->policyLanguage = language;
311 pci->proxyPolicy->policy = policy;
313 pci->pcPathLengthConstraint = pathlen;
317 ASN1_OBJECT_free(language);
318 ASN1_INTEGER_free(pathlen);
320 ASN1_OCTET_STRING_free(policy);
322 PROXY_CERT_INFO_EXTENSION_free(pci);
325 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);