1 /*
2 * Written by Dr Stephen N Henson ([email protected]) for the OpenSSL project
3 * 1999.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999-2004 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 * [email protected].
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 * ([email protected]). This product includes software written by Tim
55 * Hudson ([email protected]).
56 *
57 */
58
59 #include <stdio.h>
60 #include <string.h>
61
62 #include <openssl/asn1.h>
63 #include <openssl/asn1t.h>
64 #include <openssl/conf.h>
65 #include <openssl/err.h>
66 #include <openssl/mem.h>
67 #include <openssl/obj.h>
68 #include <openssl/stack.h>
69 #include <openssl/x509.h>
70
71 #include "internal.h"
72
73 // Certificate policies extension support: this one is a bit complex...
74
75 static int i2r_certpol(const X509V3_EXT_METHOD *method, void *ext, BIO *out,
76 int indent);
77 static void *r2i_certpol(const X509V3_EXT_METHOD *method, const X509V3_CTX *ctx,
78 const char *value);
79 static void print_qualifiers(BIO *out, const STACK_OF(POLICYQUALINFO) *quals,
80 int indent);
81 static void print_notice(BIO *out, const USERNOTICE *notice, int indent);
82 static POLICYINFO *policy_section(const X509V3_CTX *ctx,
83 const STACK_OF(CONF_VALUE) *polstrs,
84 int ia5org);
85 static POLICYQUALINFO *notice_section(const X509V3_CTX *ctx,
86 const STACK_OF(CONF_VALUE) *unot,
87 int ia5org);
88 static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums,
89 const STACK_OF(CONF_VALUE) *nos);
90
91 const X509V3_EXT_METHOD v3_cpols = {
92 NID_certificate_policies,
93 0,
94 ASN1_ITEM_ref(CERTIFICATEPOLICIES),
95 0,
96 0,
97 0,
98 0,
99 0,
100 0,
101 0,
102 0,
103 i2r_certpol,
104 r2i_certpol,
105 NULL,
106 };
107
108 DECLARE_ASN1_ITEM(POLICYINFO)
109 DECLARE_ASN1_ITEM(POLICYQUALINFO)
110 DECLARE_ASN1_ITEM(USERNOTICE)
111 DECLARE_ASN1_ITEM(NOTICEREF)
112
113 ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) = ASN1_EX_TEMPLATE_TYPE(
114 ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
115 ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)
116
117 IMPLEMENT_ASN1_FUNCTIONS_const(CERTIFICATEPOLICIES)
118
119 ASN1_SEQUENCE(POLICYINFO) = {
120 ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
121 ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO),
122 } ASN1_SEQUENCE_END(POLICYINFO)
123
124 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICYINFO)
125
126 ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other,
127 ASN1_ANY);
128
129 ASN1_ADB(POLICYQUALINFO) = {
130 ADB_ENTRY(NID_id_qt_cps,
131 ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
132 ADB_ENTRY(NID_id_qt_unotice,
133 ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE)),
134 } ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);
135
136 ASN1_SEQUENCE(POLICYQUALINFO) = {
137 ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
138 ASN1_ADB_OBJECT(POLICYQUALINFO),
139 } ASN1_SEQUENCE_END(POLICYQUALINFO)
140
141 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICYQUALINFO)
142
143 ASN1_SEQUENCE(USERNOTICE) = {
144 ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
145 ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT),
146 } ASN1_SEQUENCE_END(USERNOTICE)
147
148 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(USERNOTICE)
149
150 ASN1_SEQUENCE(NOTICEREF) = {
151 ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
152 ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER),
153 } ASN1_SEQUENCE_END(NOTICEREF)
154
155 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NOTICEREF)
156
157 static void *r2i_certpol(const X509V3_EXT_METHOD *method, const X509V3_CTX *ctx,
158 const char *value) {
159 STACK_OF(POLICYINFO) *pols = sk_POLICYINFO_new_null();
160 if (pols == NULL) {
161 return NULL;
162 }
163 STACK_OF(CONF_VALUE) *vals = X509V3_parse_list(value);
164 if (vals == NULL) {
165 OPENSSL_PUT_ERROR(X509V3, ERR_R_X509V3_LIB);
166 goto err;
167 }
168 int ia5org = 0;
169 for (size_t i = 0; i < sk_CONF_VALUE_num(vals); i++) {
170 const CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
171 if (cnf->value || !cnf->name) {
172 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_POLICY_IDENTIFIER);
173 X509V3_conf_err(cnf);
174 goto err;
175 }
176 POLICYINFO *pol;
177 const char *pstr = cnf->name;
178 if (!strcmp(pstr, "ia5org")) {
179 ia5org = 1;
180 continue;
181 } else if (*pstr == '@') {
182 const STACK_OF(CONF_VALUE) *polsect = X509V3_get_section(ctx, pstr + 1);
183 if (!polsect) {
184 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
185
186 X509V3_conf_err(cnf);
187 goto err;
188 }
189 pol = policy_section(ctx, polsect, ia5org);
190 if (!pol) {
191 goto err;
192 }
193 } else {
194 ASN1_OBJECT *pobj = OBJ_txt2obj(cnf->name, 0);
195 if (pobj == NULL) {
196 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
197 X509V3_conf_err(cnf);
198 goto err;
199 }
200 pol = POLICYINFO_new();
201 if (pol == NULL) {
202 ASN1_OBJECT_free(pobj);
203 goto err;
204 }
205 pol->policyid = pobj;
206 }
207 if (!sk_POLICYINFO_push(pols, pol)) {
208 POLICYINFO_free(pol);
209 goto err;
210 }
211 }
212 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
213 return pols;
214 err:
215 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
216 sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
217 return NULL;
218 }
219
policy_section(const X509V3_CTX * ctx,const STACK_OF (CONF_VALUE)* polstrs,int ia5org)220 static POLICYINFO *policy_section(const X509V3_CTX *ctx,
221 const STACK_OF(CONF_VALUE) *polstrs,
222 int ia5org) {
223 POLICYINFO *pol;
224 POLICYQUALINFO *qual;
225 if (!(pol = POLICYINFO_new())) {
226 goto err;
227 }
228 for (size_t i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
229 const CONF_VALUE *cnf = sk_CONF_VALUE_value(polstrs, i);
230 if (!strcmp(cnf->name, "policyIdentifier")) {
231 ASN1_OBJECT *pobj;
232 if (!(pobj = OBJ_txt2obj(cnf->value, 0))) {
233 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
234 X509V3_conf_err(cnf);
235 goto err;
236 }
237 pol->policyid = pobj;
238
239 } else if (x509v3_conf_name_matches(cnf->name, "CPS")) {
240 if (!pol->qualifiers) {
241 pol->qualifiers = sk_POLICYQUALINFO_new_null();
242 }
243 if (!(qual = POLICYQUALINFO_new())) {
244 goto err;
245 }
246 if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual)) {
247 goto err;
248 }
249 qual->pqualid = OBJ_nid2obj(NID_id_qt_cps);
250 if (qual->pqualid == NULL) {
251 OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
252 goto err;
253 }
254 qual->d.cpsuri = ASN1_IA5STRING_new();
255 if (qual->d.cpsuri == NULL) {
256 goto err;
257 }
258 if (!ASN1_STRING_set(qual->d.cpsuri, cnf->value, strlen(cnf->value))) {
259 goto err;
260 }
261 } else if (x509v3_conf_name_matches(cnf->name, "userNotice")) {
262 if (*cnf->value != '@') {
263 OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXPECTED_A_SECTION_NAME);
264 X509V3_conf_err(cnf);
265 goto err;
266 }
267 const STACK_OF(CONF_VALUE) *unot =
268 X509V3_get_section(ctx, cnf->value + 1);
269 if (!unot) {
270 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
271 X509V3_conf_err(cnf);
272 goto err;
273 }
274 qual = notice_section(ctx, unot, ia5org);
275 if (!qual) {
276 goto err;
277 }
278 if (!pol->qualifiers) {
279 pol->qualifiers = sk_POLICYQUALINFO_new_null();
280 }
281 if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual)) {
282 goto err;
283 }
284 } else {
285 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
286
287 X509V3_conf_err(cnf);
288 goto err;
289 }
290 }
291 if (!pol->policyid) {
292 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_POLICY_IDENTIFIER);
293 goto err;
294 }
295
296 return pol;
297
298 err:
299 POLICYINFO_free(pol);
300 return NULL;
301 }
302
notice_section(const X509V3_CTX * ctx,const STACK_OF (CONF_VALUE)* unot,int ia5org)303 static POLICYQUALINFO *notice_section(const X509V3_CTX *ctx,
304 const STACK_OF(CONF_VALUE) *unot,
305 int ia5org) {
306 USERNOTICE *notice;
307 POLICYQUALINFO *qual;
308 if (!(qual = POLICYQUALINFO_new())) {
309 goto err;
310 }
311 qual->pqualid = OBJ_nid2obj(NID_id_qt_unotice);
312 if (qual->pqualid == NULL) {
313 OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
314 goto err;
315 }
316 if (!(notice = USERNOTICE_new())) {
317 goto err;
318 }
319 qual->d.usernotice = notice;
320 for (size_t i = 0; i < sk_CONF_VALUE_num(unot); i++) {
321 const CONF_VALUE *cnf = sk_CONF_VALUE_value(unot, i);
322 if (!strcmp(cnf->name, "explicitText")) {
323 notice->exptext = ASN1_VISIBLESTRING_new();
324 if (notice->exptext == NULL) {
325 goto err;
326 }
327 if (!ASN1_STRING_set(notice->exptext, cnf->value, strlen(cnf->value))) {
328 goto err;
329 }
330 } else if (!strcmp(cnf->name, "organization")) {
331 NOTICEREF *nref;
332 if (!notice->noticeref) {
333 if (!(nref = NOTICEREF_new())) {
334 goto err;
335 }
336 notice->noticeref = nref;
337 } else {
338 nref = notice->noticeref;
339 }
340 if (ia5org) {
341 nref->organization->type = V_ASN1_IA5STRING;
342 } else {
343 nref->organization->type = V_ASN1_VISIBLESTRING;
344 }
345 if (!ASN1_STRING_set(nref->organization, cnf->value,
346 strlen(cnf->value))) {
347 goto err;
348 }
349 } else if (!strcmp(cnf->name, "noticeNumbers")) {
350 NOTICEREF *nref;
351 STACK_OF(CONF_VALUE) *nos;
352 if (!notice->noticeref) {
353 if (!(nref = NOTICEREF_new())) {
354 goto err;
355 }
356 notice->noticeref = nref;
357 } else {
358 nref = notice->noticeref;
359 }
360 nos = X509V3_parse_list(cnf->value);
361 if (!nos || !sk_CONF_VALUE_num(nos)) {
362 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBERS);
363 X509V3_conf_err(cnf);
364 sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
365 goto err;
366 }
367 int ret = nref_nos(nref->noticenos, nos);
368 sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
369 if (!ret) {
370 goto err;
371 }
372 } else {
373 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
374 X509V3_conf_err(cnf);
375 goto err;
376 }
377 }
378
379 if (notice->noticeref &&
380 (!notice->noticeref->noticenos || !notice->noticeref->organization)) {
381 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NEED_ORGANIZATION_AND_NUMBERS);
382 goto err;
383 }
384
385 return qual;
386
387 err:
388 POLICYQUALINFO_free(qual);
389 return NULL;
390 }
391
nref_nos(STACK_OF (ASN1_INTEGER)* nnums,const STACK_OF (CONF_VALUE)* nos)392 static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums,
393 const STACK_OF(CONF_VALUE) *nos) {
394 for (size_t i = 0; i < sk_CONF_VALUE_num(nos); i++) {
395 const CONF_VALUE *cnf = sk_CONF_VALUE_value(nos, i);
396 ASN1_INTEGER *aint = s2i_ASN1_INTEGER(NULL, cnf->name);
397 if (aint == NULL) {
398 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBER);
399 return 0;
400 }
401 if (!sk_ASN1_INTEGER_push(nnums, aint)) {
402 ASN1_INTEGER_free(aint);
403 return 0;
404 }
405 }
406 return 1;
407 }
408
i2r_certpol(const X509V3_EXT_METHOD * method,void * ext,BIO * out,int indent)409 static int i2r_certpol(const X509V3_EXT_METHOD *method, void *ext, BIO *out,
410 int indent) {
411 const STACK_OF(POLICYINFO) *pol = ext;
412 // First print out the policy OIDs
413 for (size_t i = 0; i < sk_POLICYINFO_num(pol); i++) {
414 const POLICYINFO *pinfo = sk_POLICYINFO_value(pol, i);
415 BIO_printf(out, "%*sPolicy: ", indent, "");
416 i2a_ASN1_OBJECT(out, pinfo->policyid);
417 BIO_puts(out, "\n");
418 if (pinfo->qualifiers) {
419 print_qualifiers(out, pinfo->qualifiers, indent + 2);
420 }
421 }
422 return 1;
423 }
424
print_qualifiers(BIO * out,const STACK_OF (POLICYQUALINFO)* quals,int indent)425 static void print_qualifiers(BIO *out, const STACK_OF(POLICYQUALINFO) *quals,
426 int indent) {
427 for (size_t i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
428 const POLICYQUALINFO *qualinfo = sk_POLICYQUALINFO_value(quals, i);
429 switch (OBJ_obj2nid(qualinfo->pqualid)) {
430 case NID_id_qt_cps:
431 BIO_printf(out, "%*sCPS: %.*s\n", indent, "",
432 qualinfo->d.cpsuri->length, qualinfo->d.cpsuri->data);
433 break;
434
435 case NID_id_qt_unotice:
436 BIO_printf(out, "%*sUser Notice:\n", indent, "");
437 print_notice(out, qualinfo->d.usernotice, indent + 2);
438 break;
439
440 default:
441 BIO_printf(out, "%*sUnknown Qualifier: ", indent + 2, "");
442
443 i2a_ASN1_OBJECT(out, qualinfo->pqualid);
444 BIO_puts(out, "\n");
445 break;
446 }
447 }
448 }
449
print_notice(BIO * out,const USERNOTICE * notice,int indent)450 static void print_notice(BIO *out, const USERNOTICE *notice, int indent) {
451 if (notice->noticeref) {
452 NOTICEREF *ref;
453 ref = notice->noticeref;
454 BIO_printf(out, "%*sOrganization: %.*s\n", indent, "",
455 ref->organization->length, ref->organization->data);
456 BIO_printf(out, "%*sNumber%s: ", indent, "",
457 sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
458 for (size_t i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
459 ASN1_INTEGER *num;
460 char *tmp;
461 num = sk_ASN1_INTEGER_value(ref->noticenos, i);
462 if (i) {
463 BIO_puts(out, ", ");
464 }
465 if (num == NULL) {
466 BIO_puts(out, "(null)");
467 } else {
468 tmp = i2s_ASN1_INTEGER(NULL, num);
469 if (tmp == NULL) {
470 return;
471 }
472 BIO_puts(out, tmp);
473 OPENSSL_free(tmp);
474 }
475 }
476 BIO_puts(out, "\n");
477 }
478 if (notice->exptext) {
479 BIO_printf(out, "%*sExplicit Text: %.*s\n", indent, "",
480 notice->exptext->length, notice->exptext->data);
481 }
482 }
483