2 * Contributed to the OpenSSL Project 2004 by Richard Levitte
3 * (richard@levitte.org)
5 /* Copyright (c) 2004 Kungliga Tekniska Högskolan
6 * (Royal Institute of Technology, Stockholm, Sweden).
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the Institute nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #include "internal/cryptlib.h"
39 #include <openssl/conf.h>
40 #include <openssl/x509v3.h>
43 static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
44 BIO *out, int indent);
45 static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
46 X509V3_CTX *ctx, char *str);
48 const X509V3_EXT_METHOD v3_pci =
49 { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
53 (X509V3_EXT_I2R)i2r_pci,
54 (X509V3_EXT_R2I)r2i_pci,
58 static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
61 BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
62 if (pci->pcPathLengthConstraint)
63 i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
65 BIO_printf(out, "infinite");
67 BIO_printf(out, "%*sPolicy Language: ", indent, "");
68 i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
70 if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
71 BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",
72 pci->proxyPolicy->policy->data);
76 static int process_pci_value(CONF_VALUE *val,
77 ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
78 ASN1_OCTET_STRING **policy)
82 if (strcmp(val->name, "language") == 0) {
84 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
85 X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
89 if ((*language = OBJ_txt2obj(val->value, 0)) == NULL) {
90 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
91 X509V3_R_INVALID_OBJECT_IDENTIFIER);
95 } else if (strcmp(val->name, "pathlen") == 0) {
97 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
98 X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
102 if (!X509V3_get_value_int(val, pathlen)) {
103 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
104 X509V3_R_POLICY_PATH_LENGTH);
105 X509V3_conf_err(val);
108 } else if (strcmp(val->name, "policy") == 0) {
109 unsigned char *tmp_data = NULL;
112 *policy = ASN1_OCTET_STRING_new();
113 if (*policy == NULL) {
114 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
115 X509V3_conf_err(val);
120 if (strncmp(val->value, "hex:", 4) == 0) {
121 unsigned char *tmp_data2 =
122 string_to_hex(val->value + 4, &val_len);
125 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
126 X509V3_R_ILLEGAL_HEX_DIGIT);
127 X509V3_conf_err(val);
131 tmp_data = OPENSSL_realloc((*policy)->data,
132 (*policy)->length + val_len + 1);
134 (*policy)->data = tmp_data;
135 memcpy(&(*policy)->data[(*policy)->length],
137 (*policy)->length += val_len;
138 (*policy)->data[(*policy)->length] = '\0';
140 OPENSSL_free(tmp_data2);
142 * realloc failure implies the original data space is b0rked
145 OPENSSL_free((*policy)->data);
146 (*policy)->data = NULL;
147 (*policy)->length = 0;
148 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
149 X509V3_conf_err(val);
152 OPENSSL_free(tmp_data2);
153 } else if (strncmp(val->value, "file:", 5) == 0) {
154 unsigned char buf[2048];
156 BIO *b = BIO_new_file(val->value + 5, "r");
158 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_BIO_LIB);
159 X509V3_conf_err(val);
162 while ((n = BIO_read(b, buf, sizeof(buf))) > 0
163 || (n == 0 && BIO_should_retry(b))) {
167 tmp_data = OPENSSL_realloc((*policy)->data,
168 (*policy)->length + n + 1);
171 OPENSSL_free((*policy)->data);
172 (*policy)->data = NULL;
173 (*policy)->length = 0;
174 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
175 ERR_R_MALLOC_FAILURE);
176 X509V3_conf_err(val);
181 (*policy)->data = tmp_data;
182 memcpy(&(*policy)->data[(*policy)->length], buf, n);
183 (*policy)->length += n;
184 (*policy)->data[(*policy)->length] = '\0';
189 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_BIO_LIB);
190 X509V3_conf_err(val);
193 } else if (strncmp(val->value, "text:", 5) == 0) {
194 val_len = strlen(val->value + 5);
195 tmp_data = OPENSSL_realloc((*policy)->data,
196 (*policy)->length + val_len + 1);
198 (*policy)->data = tmp_data;
199 memcpy(&(*policy)->data[(*policy)->length],
200 val->value + 5, val_len);
201 (*policy)->length += val_len;
202 (*policy)->data[(*policy)->length] = '\0';
205 * realloc failure implies the original data space is b0rked
208 OPENSSL_free((*policy)->data);
209 (*policy)->data = NULL;
210 (*policy)->length = 0;
211 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
212 X509V3_conf_err(val);
216 X509V3err(X509V3_F_PROCESS_PCI_VALUE,
217 X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
218 X509V3_conf_err(val);
222 X509V3err(X509V3_F_PROCESS_PCI_VALUE, ERR_R_MALLOC_FAILURE);
223 X509V3_conf_err(val);
230 ASN1_OCTET_STRING_free(*policy);
236 static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
237 X509V3_CTX *ctx, char *value)
239 PROXY_CERT_INFO_EXTENSION *pci = NULL;
240 STACK_OF(CONF_VALUE) *vals;
241 ASN1_OBJECT *language = NULL;
242 ASN1_INTEGER *pathlen = NULL;
243 ASN1_OCTET_STRING *policy = NULL;
246 vals = X509V3_parse_list(value);
247 for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
248 CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
249 if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
250 X509V3err(X509V3_F_R2I_PCI,
251 X509V3_R_INVALID_PROXY_POLICY_SETTING);
252 X509V3_conf_err(cnf);
255 if (*cnf->name == '@') {
256 STACK_OF(CONF_VALUE) *sect;
259 sect = X509V3_get_section(ctx, cnf->name + 1);
261 X509V3err(X509V3_F_R2I_PCI, X509V3_R_INVALID_SECTION);
262 X509V3_conf_err(cnf);
265 for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) {
267 process_pci_value(sk_CONF_VALUE_value(sect, j),
268 &language, &pathlen, &policy);
270 X509V3_section_free(ctx, sect);
274 if (!process_pci_value(cnf, &language, &pathlen, &policy)) {
275 X509V3_conf_err(cnf);
281 /* Language is mandatory */
283 X509V3err(X509V3_F_R2I_PCI,
284 X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
287 i = OBJ_obj2nid(language);
288 if ((i == NID_Independent || i == NID_id_ppl_inheritAll) && policy) {
289 X509V3err(X509V3_F_R2I_PCI,
290 X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
294 pci = PROXY_CERT_INFO_EXTENSION_new();
296 X509V3err(X509V3_F_R2I_PCI, ERR_R_MALLOC_FAILURE);
300 pci->proxyPolicy->policyLanguage = language;
302 pci->proxyPolicy->policy = policy;
304 pci->pcPathLengthConstraint = pathlen;
308 ASN1_OBJECT_free(language);
309 ASN1_INTEGER_free(pathlen);
311 ASN1_OCTET_STRING_free(policy);
313 PROXY_CERT_INFO_EXTENSION_free(pci);
316 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);