1 /*
2 * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/conf.h>
13 #include <openssl/asn1.h>
14 #include <openssl/asn1t.h>
15 #include <openssl/x509v3.h>
16
17 #include "x509_local.h"
18 #include "pcy_local.h"
19 #include "ext_dat.h"
20
21 /* Certificate policies extension support: this one is a bit complex... */
22
23 static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
24 BIO *out, int indent);
25 static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
26 X509V3_CTX *ctx, const char *value);
27 static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
28 int indent);
29 static void print_notice(BIO *out, USERNOTICE *notice, int indent);
30 static POLICYINFO *policy_section(X509V3_CTX *ctx,
31 STACK_OF(CONF_VALUE) *polstrs, int ia5org);
32 static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
33 STACK_OF(CONF_VALUE) *unot, int ia5org);
34 static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos);
35 static int displaytext_str2tag(const char *tagstr, unsigned int *tag_len);
36 static int displaytext_get_tag_len(const char *tagstr);
37
38 const X509V3_EXT_METHOD ossl_v3_cpols = {
39 NID_certificate_policies, 0, ASN1_ITEM_ref(CERTIFICATEPOLICIES),
40 0, 0, 0, 0,
41 0, 0,
42 0, 0,
43 (X509V3_EXT_I2R)i2r_certpol,
44 (X509V3_EXT_R2I)r2i_certpol,
45 NULL
46 };
47
48 ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) =
49 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
50 ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)
51
52 IMPLEMENT_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
53
54 ASN1_SEQUENCE(POLICYINFO) = {
55 ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
56 ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO)
57 } ASN1_SEQUENCE_END(POLICYINFO)
58
59 IMPLEMENT_ASN1_FUNCTIONS(POLICYINFO)
60
61 ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other, ASN1_ANY);
62
63 ASN1_ADB(POLICYQUALINFO) = {
64 ADB_ENTRY(NID_id_qt_cps, ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
65 ADB_ENTRY(NID_id_qt_unotice, ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE))
66 } ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);
67
68 ASN1_SEQUENCE(POLICYQUALINFO) = {
69 ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
70 ASN1_ADB_OBJECT(POLICYQUALINFO)
71 } ASN1_SEQUENCE_END(POLICYQUALINFO)
72
73 IMPLEMENT_ASN1_FUNCTIONS(POLICYQUALINFO)
74
75 ASN1_SEQUENCE(USERNOTICE) = {
76 ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
77 ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT)
78 } ASN1_SEQUENCE_END(USERNOTICE)
79
80 IMPLEMENT_ASN1_FUNCTIONS(USERNOTICE)
81
82 ASN1_SEQUENCE(NOTICEREF) = {
83 ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
84 ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER)
85 } ASN1_SEQUENCE_END(NOTICEREF)
86
87 IMPLEMENT_ASN1_FUNCTIONS(NOTICEREF)
88
89 static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
90 X509V3_CTX *ctx, const char *value)
91 {
92 STACK_OF(POLICYINFO) *pols;
93 char *pstr;
94 POLICYINFO *pol;
95 ASN1_OBJECT *pobj;
96 STACK_OF(CONF_VALUE) *vals = X509V3_parse_list(value);
97 CONF_VALUE *cnf;
98 const int num = sk_CONF_VALUE_num(vals);
99 int i, ia5org;
100
101 if (vals == NULL) {
102 ERR_raise(ERR_LIB_X509V3, ERR_R_X509V3_LIB);
103 return NULL;
104 }
105
106 pols = sk_POLICYINFO_new_reserve(NULL, num);
107 if (pols == NULL) {
108 ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
109 goto err;
110 }
111
112 ia5org = 0;
113 for (i = 0; i < num; i++) {
114 cnf = sk_CONF_VALUE_value(vals, i);
115 if (cnf->value != NULL || cnf->name == NULL) {
116 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_POLICY_IDENTIFIER);
117 X509V3_conf_add_error_name_value(cnf);
118 goto err;
119 }
120 pstr = cnf->name;
121 if (strcmp(pstr, "ia5org") == 0) {
122 ia5org = 1;
123 continue;
124 } else if (*pstr == '@') {
125 STACK_OF(CONF_VALUE) *polsect;
126
127 polsect = X509V3_get_section(ctx, pstr + 1);
128 if (polsect == NULL) {
129 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_SECTION,
130 "%s", cnf->name);
131 goto err;
132 }
133 pol = policy_section(ctx, polsect, ia5org);
134 X509V3_section_free(ctx, polsect);
135 if (pol == NULL)
136 goto err;
137 } else {
138 if ((pobj = OBJ_txt2obj(cnf->name, 0)) == NULL) {
139 ERR_raise_data(ERR_LIB_X509V3,
140 X509V3_R_INVALID_OBJECT_IDENTIFIER,
141 "%s", cnf->name);
142 goto err;
143 }
144 pol = POLICYINFO_new();
145 if (pol == NULL) {
146 ASN1_OBJECT_free(pobj);
147 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
148 goto err;
149 }
150 pol->policyid = pobj;
151 }
152 if (!sk_POLICYINFO_push(pols, pol)) {
153 POLICYINFO_free(pol);
154 ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
155 goto err;
156 }
157 }
158 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
159 return pols;
160 err:
161 sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
162 sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
163 return NULL;
164 }
165
policy_section(X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* polstrs,int ia5org)166 static POLICYINFO *policy_section(X509V3_CTX *ctx,
167 STACK_OF(CONF_VALUE) *polstrs, int ia5org)
168 {
169 int i;
170 CONF_VALUE *cnf;
171 POLICYINFO *pol;
172 POLICYQUALINFO *qual;
173
174 if ((pol = POLICYINFO_new()) == NULL) {
175 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
176 goto err;
177 }
178 for (i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
179 cnf = sk_CONF_VALUE_value(polstrs, i);
180 if (strcmp(cnf->name, "policyIdentifier") == 0) {
181 ASN1_OBJECT *pobj;
182
183 if ((pobj = OBJ_txt2obj(cnf->value, 0)) == NULL) {
184 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
185 X509V3_conf_err(cnf);
186 goto err;
187 }
188 pol->policyid = pobj;
189
190 } else if (!ossl_v3_name_cmp(cnf->name, "CPS")) {
191 if (pol->qualifiers == NULL)
192 pol->qualifiers = sk_POLICYQUALINFO_new_null();
193 if ((qual = POLICYQUALINFO_new()) == NULL) {
194 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
195 goto err;
196 }
197 if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual)) {
198 ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
199 goto err;
200 }
201 if ((qual->pqualid = OBJ_nid2obj(NID_id_qt_cps)) == NULL) {
202 ERR_raise(ERR_LIB_X509V3, ERR_R_INTERNAL_ERROR);
203 goto err;
204 }
205 if ((qual->d.cpsuri = ASN1_IA5STRING_new()) == NULL) {
206 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
207 goto err;
208 }
209 if (!ASN1_STRING_set(qual->d.cpsuri, cnf->value,
210 strlen(cnf->value))) {
211 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
212 goto err;
213 }
214 } else if (!ossl_v3_name_cmp(cnf->name, "userNotice")) {
215 STACK_OF(CONF_VALUE) *unot;
216 if (*cnf->value != '@') {
217 ERR_raise(ERR_LIB_X509V3, X509V3_R_EXPECTED_A_SECTION_NAME);
218 X509V3_conf_err(cnf);
219 goto err;
220 }
221 unot = X509V3_get_section(ctx, cnf->value + 1);
222 if (!unot) {
223 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_SECTION);
224
225 X509V3_conf_err(cnf);
226 goto err;
227 }
228 qual = notice_section(ctx, unot, ia5org);
229 X509V3_section_free(ctx, unot);
230 if (!qual)
231 goto err;
232 if (pol->qualifiers == NULL)
233 pol->qualifiers = sk_POLICYQUALINFO_new_null();
234 if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual)) {
235 ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
236 goto err;
237 }
238 } else {
239 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_OPTION);
240 X509V3_conf_err(cnf);
241 goto err;
242 }
243 }
244 if (pol->policyid == NULL) {
245 ERR_raise(ERR_LIB_X509V3, X509V3_R_NO_POLICY_IDENTIFIER);
246 goto err;
247 }
248
249 return pol;
250
251 err:
252 POLICYINFO_free(pol);
253 return NULL;
254 }
255
displaytext_get_tag_len(const char * tagstr)256 static int displaytext_get_tag_len(const char *tagstr)
257 {
258 char *colon = strchr(tagstr, ':');
259
260 return (colon == NULL) ? -1 : colon - tagstr;
261 }
262
displaytext_str2tag(const char * tagstr,unsigned int * tag_len)263 static int displaytext_str2tag(const char *tagstr, unsigned int *tag_len)
264 {
265 int len;
266
267 *tag_len = 0;
268 len = displaytext_get_tag_len(tagstr);
269
270 if (len == -1)
271 return V_ASN1_VISIBLESTRING;
272 *tag_len = len;
273 if (len == sizeof("UTF8") - 1 && HAS_PREFIX(tagstr, "UTF8"))
274 return V_ASN1_UTF8STRING;
275 if (len == sizeof("UTF8String") - 1 && HAS_PREFIX(tagstr, "UTF8String"))
276 return V_ASN1_UTF8STRING;
277 if (len == sizeof("BMP") - 1 && HAS_PREFIX(tagstr, "BMP"))
278 return V_ASN1_BMPSTRING;
279 if (len == sizeof("BMPSTRING") - 1 && HAS_PREFIX(tagstr, "BMPSTRING"))
280 return V_ASN1_BMPSTRING;
281 if (len == sizeof("VISIBLE") - 1 && HAS_PREFIX(tagstr, "VISIBLE"))
282 return V_ASN1_VISIBLESTRING;
283 if (len == sizeof("VISIBLESTRING") - 1 && HAS_PREFIX(tagstr, "VISIBLESTRING"))
284 return V_ASN1_VISIBLESTRING;
285 *tag_len = 0;
286 return V_ASN1_VISIBLESTRING;
287 }
288
notice_section(X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* unot,int ia5org)289 static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
290 STACK_OF(CONF_VALUE) *unot, int ia5org)
291 {
292 int i, ret, len, tag;
293 unsigned int tag_len;
294 CONF_VALUE *cnf;
295 USERNOTICE *not;
296 POLICYQUALINFO *qual;
297 char *value = NULL;
298
299 if ((qual = POLICYQUALINFO_new()) == NULL) {
300 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
301 goto err;
302 }
303 if ((qual->pqualid = OBJ_nid2obj(NID_id_qt_unotice)) == NULL) {
304 ERR_raise(ERR_LIB_X509V3, ERR_R_INTERNAL_ERROR);
305 goto err;
306 }
307 if ((not = USERNOTICE_new()) == NULL) {
308 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
309 goto err;
310 }
311 qual->d.usernotice = not;
312 for (i = 0; i < sk_CONF_VALUE_num(unot); i++) {
313 cnf = sk_CONF_VALUE_value(unot, i);
314
315 value = cnf->value;
316 if (strcmp(cnf->name, "explicitText") == 0) {
317 tag = displaytext_str2tag(value, &tag_len);
318 if ((not->exptext = ASN1_STRING_type_new(tag)) == NULL) {
319 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
320 goto err;
321 }
322 if (tag_len != 0)
323 value += tag_len + 1;
324 len = strlen(value);
325 if (!ASN1_STRING_set(not->exptext, value, len)) {
326 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
327 goto err;
328 }
329 } else if (strcmp(cnf->name, "organization") == 0) {
330 NOTICEREF *nref;
331
332 if (!not->noticeref) {
333 if ((nref = NOTICEREF_new()) == NULL) {
334 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
335 goto err;
336 }
337 not->noticeref = nref;
338 } else
339 nref = not->noticeref;
340 if (ia5org)
341 nref->organization->type = V_ASN1_IA5STRING;
342 else
343 nref->organization->type = V_ASN1_VISIBLESTRING;
344 if (!ASN1_STRING_set(nref->organization, cnf->value,
345 strlen(cnf->value))) {
346 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
347 goto err;
348 }
349 } else if (strcmp(cnf->name, "noticeNumbers") == 0) {
350 NOTICEREF *nref;
351
352 STACK_OF(CONF_VALUE) *nos;
353 if (!not->noticeref) {
354 if ((nref = NOTICEREF_new()) == NULL) {
355 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
356 goto err;
357 }
358 not->noticeref = nref;
359 } else
360 nref = not->noticeref;
361 nos = X509V3_parse_list(cnf->value);
362 if (!nos || !sk_CONF_VALUE_num(nos)) {
363 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NUMBERS);
364 X509V3_conf_add_error_name_value(cnf);
365 sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
366 goto err;
367 }
368 ret = nref_nos(nref->noticenos, nos);
369 sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
370 if (!ret)
371 goto err;
372 } else {
373 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_OPTION);
374 X509V3_conf_add_error_name_value(cnf);
375 goto err;
376 }
377 }
378
379 if (not->noticeref &&
380 (!not->noticeref->noticenos || !not->noticeref->organization)) {
381 ERR_raise(ERR_LIB_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,STACK_OF (CONF_VALUE)* nos)392 static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos)
393 {
394 CONF_VALUE *cnf;
395 ASN1_INTEGER *aint;
396
397 int i;
398
399 for (i = 0; i < sk_CONF_VALUE_num(nos); i++) {
400 cnf = sk_CONF_VALUE_value(nos, i);
401 if ((aint = s2i_ASN1_INTEGER(NULL, cnf->name)) == NULL) {
402 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NUMBER);
403 return 0;
404 }
405 if (!sk_ASN1_INTEGER_push(nnums, aint)) {
406 ASN1_INTEGER_free(aint);
407 ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
408 return 0;
409 }
410 }
411 return 1;
412 }
413
i2r_certpol(X509V3_EXT_METHOD * method,STACK_OF (POLICYINFO)* pol,BIO * out,int indent)414 static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
415 BIO *out, int indent)
416 {
417 int i;
418 POLICYINFO *pinfo;
419 /* First print out the policy OIDs */
420 for (i = 0; i < sk_POLICYINFO_num(pol); i++) {
421 if (i > 0)
422 BIO_puts(out, "\n");
423 pinfo = sk_POLICYINFO_value(pol, i);
424 BIO_printf(out, "%*sPolicy: ", indent, "");
425 i2a_ASN1_OBJECT(out, pinfo->policyid);
426 if (pinfo->qualifiers) {
427 BIO_puts(out, "\n");
428 print_qualifiers(out, pinfo->qualifiers, indent + 2);
429 }
430 }
431 return 1;
432 }
433
print_qualifiers(BIO * out,STACK_OF (POLICYQUALINFO)* quals,int indent)434 static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
435 int indent)
436 {
437 POLICYQUALINFO *qualinfo;
438 int i;
439 for (i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
440 if (i > 0)
441 BIO_puts(out, "\n");
442 qualinfo = sk_POLICYQUALINFO_value(quals, i);
443 switch (OBJ_obj2nid(qualinfo->pqualid)) {
444 case NID_id_qt_cps:
445 BIO_printf(out, "%*sCPS: %.*s", indent, "",
446 qualinfo->d.cpsuri->length,
447 qualinfo->d.cpsuri->data);
448 break;
449
450 case NID_id_qt_unotice:
451 BIO_printf(out, "%*sUser Notice:\n", indent, "");
452 print_notice(out, qualinfo->d.usernotice, indent + 2);
453 break;
454
455 default:
456 BIO_printf(out, "%*sUnknown Qualifier: ", indent + 2, "");
457
458 i2a_ASN1_OBJECT(out, qualinfo->pqualid);
459 break;
460 }
461 }
462 }
463
print_notice(BIO * out,USERNOTICE * notice,int indent)464 static void print_notice(BIO *out, USERNOTICE *notice, int indent)
465 {
466 int i;
467 if (notice->noticeref) {
468 NOTICEREF *ref;
469 ref = notice->noticeref;
470 BIO_printf(out, "%*sOrganization: %.*s\n", indent, "",
471 ref->organization->length,
472 ref->organization->data);
473 BIO_printf(out, "%*sNumber%s: ", indent, "",
474 sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
475 for (i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
476 ASN1_INTEGER *num;
477 char *tmp;
478 num = sk_ASN1_INTEGER_value(ref->noticenos, i);
479 if (i)
480 BIO_puts(out, ", ");
481 if (num == NULL)
482 BIO_puts(out, "(null)");
483 else {
484 tmp = i2s_ASN1_INTEGER(NULL, num);
485 if (tmp == NULL)
486 return;
487 BIO_puts(out, tmp);
488 OPENSSL_free(tmp);
489 }
490 }
491 if (notice->exptext)
492 BIO_puts(out, "\n");
493 }
494 if (notice->exptext)
495 BIO_printf(out, "%*sExplicit Text: %.*s", indent, "",
496 notice->exptext->length,
497 notice->exptext->data);
498 }
499
X509_POLICY_NODE_print(BIO * out,X509_POLICY_NODE * node,int indent)500 void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent)
501 {
502 const X509_POLICY_DATA *dat = node->data;
503
504 BIO_printf(out, "%*sPolicy: ", indent, "");
505
506 i2a_ASN1_OBJECT(out, dat->valid_policy);
507 BIO_puts(out, "\n");
508 BIO_printf(out, "%*s%s\n", indent + 2, "",
509 node_data_critical(dat) ? "Critical" : "Non Critical");
510 if (dat->qualifier_set) {
511 print_qualifiers(out, dat->qualifier_set, indent + 2);
512 BIO_puts(out, "\n");
513 }
514 else
515 BIO_printf(out, "%*sNo Qualifiers\n", indent + 2, "");
516 }
517
