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1 /* v3_cpols.c */
2 /*
3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4  * 1999.
5  */
6 /* ====================================================================
7  * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in
18  *    the documentation and/or other materials provided with the
19  *    distribution.
20  *
21  * 3. All advertising materials mentioning features or use of this
22  *    software must display the following acknowledgment:
23  *    "This product includes software developed by the OpenSSL Project
24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25  *
26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27  *    endorse or promote products derived from this software without
28  *    prior written permission. For written permission, please contact
29  *    licensing@OpenSSL.org.
30  *
31  * 5. Products derived from this software may not be called "OpenSSL"
32  *    nor may "OpenSSL" appear in their names without prior written
33  *    permission of the OpenSSL Project.
34  *
35  * 6. Redistributions of any form whatsoever must retain the following
36  *    acknowledgment:
37  *    "This product includes software developed by the OpenSSL Project
38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39  *
40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51  * OF THE POSSIBILITY OF SUCH DAMAGE.
52  * ====================================================================
53  *
54  * This product includes cryptographic software written by Eric Young
55  * (eay@cryptsoft.com).  This product includes software written by Tim
56  * Hudson (tjh@cryptsoft.com).
57  *
58  */
59 
60 #include <stdio.h>
61 #include <string.h>
62 
63 #include <openssl/asn1.h>
64 #include <openssl/asn1t.h>
65 #include <openssl/conf.h>
66 #include <openssl/err.h>
67 #include <openssl/mem.h>
68 #include <openssl/obj.h>
69 #include <openssl/stack.h>
70 #include <openssl/x509v3.h>
71 
72 #include "pcy_int.h"
73 
74 /* Certificate policies extension support: this one is a bit complex... */
75 
76 static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
77                        BIO *out, int indent);
78 static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
79                                          X509V3_CTX *ctx, char *value);
80 static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
81                              int indent);
82 static void print_notice(BIO *out, USERNOTICE *notice, int indent);
83 static POLICYINFO *policy_section(X509V3_CTX *ctx,
84                                   STACK_OF(CONF_VALUE) *polstrs, int ia5org);
85 static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
86                                       STACK_OF(CONF_VALUE) *unot, int ia5org);
87 static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos);
88 
89 const X509V3_EXT_METHOD v3_cpols = {
90     NID_certificate_policies, 0, ASN1_ITEM_ref(CERTIFICATEPOLICIES),
91     0, 0, 0, 0,
92     0, 0,
93     0, 0,
94     (X509V3_EXT_I2R)i2r_certpol,
95     (X509V3_EXT_R2I)r2i_certpol,
96     NULL
97 };
98 
99 ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) =
100         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
101 ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)
102 
103 IMPLEMENT_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
104 
105 ASN1_SEQUENCE(POLICYINFO) = {
106         ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
107         ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO)
108 } ASN1_SEQUENCE_END(POLICYINFO)
109 
110 IMPLEMENT_ASN1_FUNCTIONS(POLICYINFO)
111 
112 ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other, ASN1_ANY);
113 
114 ASN1_ADB(POLICYQUALINFO) = {
115         ADB_ENTRY(NID_id_qt_cps, ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
116         ADB_ENTRY(NID_id_qt_unotice, ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE))
117 } ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);
118 
119 ASN1_SEQUENCE(POLICYQUALINFO) = {
120         ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
121         ASN1_ADB_OBJECT(POLICYQUALINFO)
122 } ASN1_SEQUENCE_END(POLICYQUALINFO)
123 
124 IMPLEMENT_ASN1_FUNCTIONS(POLICYQUALINFO)
125 
126 ASN1_SEQUENCE(USERNOTICE) = {
127         ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
128         ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT)
129 } ASN1_SEQUENCE_END(USERNOTICE)
130 
131 IMPLEMENT_ASN1_FUNCTIONS(USERNOTICE)
132 
133 ASN1_SEQUENCE(NOTICEREF) = {
134         ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
135         ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER)
136 } ASN1_SEQUENCE_END(NOTICEREF)
137 
138 IMPLEMENT_ASN1_FUNCTIONS(NOTICEREF)
139 
140 static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
141                                          X509V3_CTX *ctx, char *value)
142 {
143     STACK_OF(POLICYINFO) *pols = NULL;
144     char *pstr;
145     POLICYINFO *pol;
146     ASN1_OBJECT *pobj;
147     STACK_OF(CONF_VALUE) *vals;
148     CONF_VALUE *cnf;
149     size_t i;
150     int ia5org;
151     pols = sk_POLICYINFO_new_null();
152     if (pols == NULL) {
153         OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
154         return NULL;
155     }
156     vals = X509V3_parse_list(value);
157     if (vals == NULL) {
158         OPENSSL_PUT_ERROR(X509V3, ERR_R_X509V3_LIB);
159         goto err;
160     }
161     ia5org = 0;
162     for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
163         cnf = sk_CONF_VALUE_value(vals, i);
164         if (cnf->value || !cnf->name) {
165             OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_POLICY_IDENTIFIER);
166             X509V3_conf_err(cnf);
167             goto err;
168         }
169         pstr = cnf->name;
170         if (!strcmp(pstr, "ia5org")) {
171             ia5org = 1;
172             continue;
173         } else if (*pstr == '@') {
174             STACK_OF(CONF_VALUE) *polsect;
175             polsect = X509V3_get_section(ctx, pstr + 1);
176             if (!polsect) {
177                 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
178 
179                 X509V3_conf_err(cnf);
180                 goto err;
181             }
182             pol = policy_section(ctx, polsect, ia5org);
183             X509V3_section_free(ctx, polsect);
184             if (!pol)
185                 goto err;
186         } else {
187             if (!(pobj = OBJ_txt2obj(cnf->name, 0))) {
188                 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
189                 X509V3_conf_err(cnf);
190                 goto err;
191             }
192             pol = POLICYINFO_new();
193             if (pol == NULL) {
194                 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
195                 ASN1_OBJECT_free(pobj);
196                 goto err;
197             }
198             pol->policyid = pobj;
199         }
200         if (!sk_POLICYINFO_push(pols, pol)) {
201             POLICYINFO_free(pol);
202             OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
203             goto err;
204         }
205     }
206     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
207     return pols;
208  err:
209     sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
210     sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
211     return NULL;
212 }
213 
policy_section(X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* polstrs,int ia5org)214 static POLICYINFO *policy_section(X509V3_CTX *ctx,
215                                   STACK_OF(CONF_VALUE) *polstrs, int ia5org)
216 {
217     size_t i;
218     CONF_VALUE *cnf;
219     POLICYINFO *pol;
220     POLICYQUALINFO *qual;
221     if (!(pol = POLICYINFO_new()))
222         goto merr;
223     for (i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
224         cnf = sk_CONF_VALUE_value(polstrs, i);
225         if (!strcmp(cnf->name, "policyIdentifier")) {
226             ASN1_OBJECT *pobj;
227             if (!(pobj = OBJ_txt2obj(cnf->value, 0))) {
228                 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
229                 X509V3_conf_err(cnf);
230                 goto err;
231             }
232             pol->policyid = pobj;
233 
234         } else if (!name_cmp(cnf->name, "CPS")) {
235             if (!pol->qualifiers)
236                 pol->qualifiers = sk_POLICYQUALINFO_new_null();
237             if (!(qual = POLICYQUALINFO_new()))
238                 goto merr;
239             if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
240                 goto merr;
241             /* TODO(fork): const correctness */
242             qual->pqualid = (ASN1_OBJECT *)OBJ_nid2obj(NID_id_qt_cps);
243             if (qual->pqualid == NULL) {
244                 OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
245                 goto err;
246             }
247             qual->d.cpsuri = M_ASN1_IA5STRING_new();
248             if (qual->d.cpsuri == NULL) {
249                 goto err;
250             }
251             if (!ASN1_STRING_set(qual->d.cpsuri, cnf->value,
252                                  strlen(cnf->value)))
253                 goto merr;
254         } else if (!name_cmp(cnf->name, "userNotice")) {
255             STACK_OF(CONF_VALUE) *unot;
256             if (*cnf->value != '@') {
257                 OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXPECTED_A_SECTION_NAME);
258                 X509V3_conf_err(cnf);
259                 goto err;
260             }
261             unot = X509V3_get_section(ctx, cnf->value + 1);
262             if (!unot) {
263                 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
264 
265                 X509V3_conf_err(cnf);
266                 goto err;
267             }
268             qual = notice_section(ctx, unot, ia5org);
269             X509V3_section_free(ctx, unot);
270             if (!qual)
271                 goto err;
272             if (!pol->qualifiers)
273                 pol->qualifiers = sk_POLICYQUALINFO_new_null();
274             if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
275                 goto merr;
276         } else {
277             OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
278 
279             X509V3_conf_err(cnf);
280             goto err;
281         }
282     }
283     if (!pol->policyid) {
284         OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_POLICY_IDENTIFIER);
285         goto err;
286     }
287 
288     return pol;
289 
290  merr:
291     OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
292 
293  err:
294     POLICYINFO_free(pol);
295     return NULL;
296 
297 }
298 
notice_section(X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* unot,int ia5org)299 static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
300                                       STACK_OF(CONF_VALUE) *unot, int ia5org)
301 {
302     size_t i;
303     int ret;
304     CONF_VALUE *cnf;
305     USERNOTICE *not;
306     POLICYQUALINFO *qual;
307     if (!(qual = POLICYQUALINFO_new()))
308         goto merr;
309     /* TODO(fork): const correctness */
310     qual->pqualid = (ASN1_OBJECT *)OBJ_nid2obj(NID_id_qt_unotice);
311     if (qual->pqualid == NULL) {
312         OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
313         goto err;
314     }
315     if (!(not = USERNOTICE_new()))
316         goto merr;
317     qual->d.usernotice = not;
318     for (i = 0; i < sk_CONF_VALUE_num(unot); i++) {
319         cnf = sk_CONF_VALUE_value(unot, i);
320         if (!strcmp(cnf->name, "explicitText")) {
321             not->exptext = M_ASN1_VISIBLESTRING_new();
322             if (not->exptext == NULL)
323                 goto merr;
324             if (!ASN1_STRING_set(not->exptext, cnf->value,
325                                  strlen(cnf->value)))
326                 goto merr;
327         } else if (!strcmp(cnf->name, "organization")) {
328             NOTICEREF *nref;
329             if (!not->noticeref) {
330                 if (!(nref = NOTICEREF_new()))
331                     goto merr;
332                 not->noticeref = nref;
333             } else
334                 nref = not->noticeref;
335             if (ia5org)
336                 nref->organization->type = V_ASN1_IA5STRING;
337             else
338                 nref->organization->type = V_ASN1_VISIBLESTRING;
339             if (!ASN1_STRING_set(nref->organization, cnf->value,
340                                  strlen(cnf->value)))
341                 goto merr;
342         } else if (!strcmp(cnf->name, "noticeNumbers")) {
343             NOTICEREF *nref;
344             STACK_OF(CONF_VALUE) *nos;
345             if (!not->noticeref) {
346                 if (!(nref = NOTICEREF_new()))
347                     goto merr;
348                 not->noticeref = nref;
349             } else
350                 nref = not->noticeref;
351             nos = X509V3_parse_list(cnf->value);
352             if (!nos || !sk_CONF_VALUE_num(nos)) {
353                 OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBERS);
354                 X509V3_conf_err(cnf);
355                 goto err;
356             }
357             ret = nref_nos(nref->noticenos, nos);
358             sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
359             if (!ret)
360                 goto err;
361         } else {
362             OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
363             X509V3_conf_err(cnf);
364             goto err;
365         }
366     }
367 
368     if (not->noticeref &&
369         (!not->noticeref->noticenos || !not->noticeref->organization)) {
370         OPENSSL_PUT_ERROR(X509V3, X509V3_R_NEED_ORGANIZATION_AND_NUMBERS);
371         goto err;
372     }
373 
374     return qual;
375 
376  merr:
377     OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
378 
379  err:
380     POLICYQUALINFO_free(qual);
381     return NULL;
382 }
383 
nref_nos(STACK_OF (ASN1_INTEGER)* nnums,STACK_OF (CONF_VALUE)* nos)384 static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos)
385 {
386     CONF_VALUE *cnf;
387     ASN1_INTEGER *aint;
388 
389     size_t i;
390 
391     for (i = 0; i < sk_CONF_VALUE_num(nos); i++) {
392         cnf = sk_CONF_VALUE_value(nos, i);
393         if (!(aint = s2i_ASN1_INTEGER(NULL, cnf->name))) {
394             OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBER);
395             goto err;
396         }
397         if (!sk_ASN1_INTEGER_push(nnums, aint))
398             goto merr;
399     }
400     return 1;
401 
402  merr:
403     ASN1_INTEGER_free(aint);
404     OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
405 
406  err:
407     return 0;
408 }
409 
i2r_certpol(X509V3_EXT_METHOD * method,STACK_OF (POLICYINFO)* pol,BIO * out,int indent)410 static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
411                        BIO *out, int indent)
412 {
413     size_t i;
414     POLICYINFO *pinfo;
415     /* First print out the policy OIDs */
416     for (i = 0; i < sk_POLICYINFO_num(pol); i++) {
417         pinfo = sk_POLICYINFO_value(pol, i);
418         BIO_printf(out, "%*sPolicy: ", indent, "");
419         i2a_ASN1_OBJECT(out, pinfo->policyid);
420         BIO_puts(out, "\n");
421         if (pinfo->qualifiers)
422             print_qualifiers(out, pinfo->qualifiers, indent + 2);
423     }
424     return 1;
425 }
426 
print_qualifiers(BIO * out,STACK_OF (POLICYQUALINFO)* quals,int indent)427 static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
428                              int indent)
429 {
430     POLICYQUALINFO *qualinfo;
431     size_t i;
432     for (i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
433         qualinfo = sk_POLICYQUALINFO_value(quals, i);
434         switch (OBJ_obj2nid(qualinfo->pqualid)) {
435         case NID_id_qt_cps:
436             BIO_printf(out, "%*sCPS: %s\n", indent, "",
437                        qualinfo->d.cpsuri->data);
438             break;
439 
440         case NID_id_qt_unotice:
441             BIO_printf(out, "%*sUser Notice:\n", indent, "");
442             print_notice(out, qualinfo->d.usernotice, indent + 2);
443             break;
444 
445         default:
446             BIO_printf(out, "%*sUnknown Qualifier: ", indent + 2, "");
447 
448             i2a_ASN1_OBJECT(out, qualinfo->pqualid);
449             BIO_puts(out, "\n");
450             break;
451         }
452     }
453 }
454 
print_notice(BIO * out,USERNOTICE * notice,int indent)455 static void print_notice(BIO *out, USERNOTICE *notice, int indent)
456 {
457     size_t i;
458     if (notice->noticeref) {
459         NOTICEREF *ref;
460         ref = notice->noticeref;
461         BIO_printf(out, "%*sOrganization: %s\n", indent, "",
462                    ref->organization->data);
463         BIO_printf(out, "%*sNumber%s: ", indent, "",
464                    sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
465         for (i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
466             ASN1_INTEGER *num;
467             char *tmp;
468             num = sk_ASN1_INTEGER_value(ref->noticenos, i);
469             if (i)
470                 BIO_puts(out, ", ");
471             if (num == NULL)
472                 BIO_puts(out, "(null)");
473             else {
474                 tmp = i2s_ASN1_INTEGER(NULL, num);
475                 if (tmp == NULL)
476                     return;
477                 BIO_puts(out, tmp);
478                 OPENSSL_free(tmp);
479             }
480         }
481         BIO_puts(out, "\n");
482     }
483     if (notice->exptext)
484         BIO_printf(out, "%*sExplicit Text: %s\n", indent, "",
485                    notice->exptext->data);
486 }
487 
X509_POLICY_NODE_print(BIO * out,X509_POLICY_NODE * node,int indent)488 void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent)
489 {
490     const X509_POLICY_DATA *dat = node->data;
491 
492     BIO_printf(out, "%*sPolicy: ", indent, "");
493 
494     i2a_ASN1_OBJECT(out, dat->valid_policy);
495     BIO_puts(out, "\n");
496     BIO_printf(out, "%*s%s\n", indent + 2, "",
497                node_data_critical(dat) ? "Critical" : "Non Critical");
498     if (dat->qualifier_set)
499         print_qualifiers(out, dat->qualifier_set, indent + 2);
500     else
501         BIO_printf(out, "%*sNo Qualifiers\n", indent + 2, "");
502 }
503