v3_cpols.c revision 296465 
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 "cryptlib.h"
62#include <openssl/conf.h>
63#include <openssl/asn1.h>
64#include <openssl/asn1t.h>
65#include <openssl/x509v3.h>
66
67#include "pcy_int.h"
68
69/* Certificate policies extension support: this one is a bit complex... */
70
71static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
72                       BIO *out, int indent);
73static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
74                                         X509V3_CTX *ctx, char *value);
75static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
76                             int indent);
77static void print_notice(BIO *out, USERNOTICE *notice, int indent);
78static POLICYINFO *policy_section(X509V3_CTX *ctx,
79                                  STACK_OF(CONF_VALUE) *polstrs, int ia5org);
80static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
81                                      STACK_OF(CONF_VALUE) *unot, int ia5org);
82static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos);
83
84const X509V3_EXT_METHOD v3_cpols = {
85    NID_certificate_policies, 0, ASN1_ITEM_ref(CERTIFICATEPOLICIES),
86    0, 0, 0, 0,
87    0, 0,
88    0, 0,
89    (X509V3_EXT_I2R)i2r_certpol,
90    (X509V3_EXT_R2I)r2i_certpol,
91    NULL
92};
93
94ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) =
95        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
96ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)
97
98IMPLEMENT_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
99
100ASN1_SEQUENCE(POLICYINFO) = {
101        ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
102        ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO)
103} ASN1_SEQUENCE_END(POLICYINFO)
104
105IMPLEMENT_ASN1_FUNCTIONS(POLICYINFO)
106
107ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other, ASN1_ANY);
108
109ASN1_ADB(POLICYQUALINFO) = {
110        ADB_ENTRY(NID_id_qt_cps, ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
111        ADB_ENTRY(NID_id_qt_unotice, ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE))
112} ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);
113
114ASN1_SEQUENCE(POLICYQUALINFO) = {
115        ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
116        ASN1_ADB_OBJECT(POLICYQUALINFO)
117} ASN1_SEQUENCE_END(POLICYQUALINFO)
118
119IMPLEMENT_ASN1_FUNCTIONS(POLICYQUALINFO)
120
121ASN1_SEQUENCE(USERNOTICE) = {
122        ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
123        ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT)
124} ASN1_SEQUENCE_END(USERNOTICE)
125
126IMPLEMENT_ASN1_FUNCTIONS(USERNOTICE)
127
128ASN1_SEQUENCE(NOTICEREF) = {
129        ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
130        ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER)
131} ASN1_SEQUENCE_END(NOTICEREF)
132
133IMPLEMENT_ASN1_FUNCTIONS(NOTICEREF)
134
135static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
136                                         X509V3_CTX *ctx, char *value)
137{
138    STACK_OF(POLICYINFO) *pols = NULL;
139    char *pstr;
140    POLICYINFO *pol;
141    ASN1_OBJECT *pobj;
142    STACK_OF(CONF_VALUE) *vals;
143    CONF_VALUE *cnf;
144    int i, ia5org;
145    pols = sk_POLICYINFO_new_null();
146    if (pols == NULL) {
147        X509V3err(X509V3_F_R2I_CERTPOL, ERR_R_MALLOC_FAILURE);
148        return NULL;
149    }
150    vals = X509V3_parse_list(value);
151    if (vals == NULL) {
152        X509V3err(X509V3_F_R2I_CERTPOL, ERR_R_X509V3_LIB);
153        goto err;
154    }
155    ia5org = 0;
156    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
157        cnf = sk_CONF_VALUE_value(vals, i);
158        if (cnf->value || !cnf->name) {
159            X509V3err(X509V3_F_R2I_CERTPOL,
160                      X509V3_R_INVALID_POLICY_IDENTIFIER);
161            X509V3_conf_err(cnf);
162            goto err;
163        }
164        pstr = cnf->name;
165        if (!strcmp(pstr, "ia5org")) {
166            ia5org = 1;
167            continue;
168        } else if (*pstr == '@') {
169            STACK_OF(CONF_VALUE) *polsect;
170            polsect = X509V3_get_section(ctx, pstr + 1);
171            if (!polsect) {
172                X509V3err(X509V3_F_R2I_CERTPOL, X509V3_R_INVALID_SECTION);
173
174                X509V3_conf_err(cnf);
175                goto err;
176            }
177            pol = policy_section(ctx, polsect, ia5org);
178            X509V3_section_free(ctx, polsect);
179            if (!pol)
180                goto err;
181        } else {
182            if (!(pobj = OBJ_txt2obj(cnf->name, 0))) {
183                X509V3err(X509V3_F_R2I_CERTPOL,
184                          X509V3_R_INVALID_OBJECT_IDENTIFIER);
185                X509V3_conf_err(cnf);
186                goto err;
187            }
188            pol = POLICYINFO_new();
189            pol->policyid = pobj;
190        }
191        if (!sk_POLICYINFO_push(pols, pol)) {
192            POLICYINFO_free(pol);
193            X509V3err(X509V3_F_R2I_CERTPOL, ERR_R_MALLOC_FAILURE);
194            goto err;
195        }
196    }
197    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
198    return pols;
199 err:
200    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
201    sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
202    return NULL;
203}
204
205static POLICYINFO *policy_section(X509V3_CTX *ctx,
206                                  STACK_OF(CONF_VALUE) *polstrs, int ia5org)
207{
208    int i;
209    CONF_VALUE *cnf;
210    POLICYINFO *pol;
211    POLICYQUALINFO *qual;
212    if (!(pol = POLICYINFO_new()))
213        goto merr;
214    for (i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
215        cnf = sk_CONF_VALUE_value(polstrs, i);
216        if (!strcmp(cnf->name, "policyIdentifier")) {
217            ASN1_OBJECT *pobj;
218            if (!(pobj = OBJ_txt2obj(cnf->value, 0))) {
219                X509V3err(X509V3_F_POLICY_SECTION,
220                          X509V3_R_INVALID_OBJECT_IDENTIFIER);
221                X509V3_conf_err(cnf);
222                goto err;
223            }
224            pol->policyid = pobj;
225
226        } else if (!name_cmp(cnf->name, "CPS")) {
227            if (!pol->qualifiers)
228                pol->qualifiers = sk_POLICYQUALINFO_new_null();
229            if (!(qual = POLICYQUALINFO_new()))
230                goto merr;
231            if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
232                goto merr;
233            qual->pqualid = OBJ_nid2obj(NID_id_qt_cps);
234            qual->d.cpsuri = M_ASN1_IA5STRING_new();
235            if (!ASN1_STRING_set(qual->d.cpsuri, cnf->value,
236                                 strlen(cnf->value)))
237                goto merr;
238        } else if (!name_cmp(cnf->name, "userNotice")) {
239            STACK_OF(CONF_VALUE) *unot;
240            if (*cnf->value != '@') {
241                X509V3err(X509V3_F_POLICY_SECTION,
242                          X509V3_R_EXPECTED_A_SECTION_NAME);
243                X509V3_conf_err(cnf);
244                goto err;
245            }
246            unot = X509V3_get_section(ctx, cnf->value + 1);
247            if (!unot) {
248                X509V3err(X509V3_F_POLICY_SECTION, X509V3_R_INVALID_SECTION);
249
250                X509V3_conf_err(cnf);
251                goto err;
252            }
253            qual = notice_section(ctx, unot, ia5org);
254            X509V3_section_free(ctx, unot);
255            if (!qual)
256                goto err;
257            if (!pol->qualifiers)
258                pol->qualifiers = sk_POLICYQUALINFO_new_null();
259            if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
260                goto merr;
261        } else {
262            X509V3err(X509V3_F_POLICY_SECTION, X509V3_R_INVALID_OPTION);
263
264            X509V3_conf_err(cnf);
265            goto err;
266        }
267    }
268    if (!pol->policyid) {
269        X509V3err(X509V3_F_POLICY_SECTION, X509V3_R_NO_POLICY_IDENTIFIER);
270        goto err;
271    }
272
273    return pol;
274
275 merr:
276    X509V3err(X509V3_F_POLICY_SECTION, ERR_R_MALLOC_FAILURE);
277
278 err:
279    POLICYINFO_free(pol);
280    return NULL;
281
282}
283
284static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
285                                      STACK_OF(CONF_VALUE) *unot, int ia5org)
286{
287    int i, ret;
288    CONF_VALUE *cnf;
289    USERNOTICE *not;
290    POLICYQUALINFO *qual;
291    if (!(qual = POLICYQUALINFO_new()))
292        goto merr;
293    qual->pqualid = OBJ_nid2obj(NID_id_qt_unotice);
294    if (!(not = USERNOTICE_new()))
295        goto merr;
296    qual->d.usernotice = not;
297    for (i = 0; i < sk_CONF_VALUE_num(unot); i++) {
298        cnf = sk_CONF_VALUE_value(unot, i);
299        if (!strcmp(cnf->name, "explicitText")) {
300            not->exptext = M_ASN1_VISIBLESTRING_new();
301            if (!ASN1_STRING_set(not->exptext, cnf->value,
302                                 strlen(cnf->value)))
303                goto merr;
304        } else if (!strcmp(cnf->name, "organization")) {
305            NOTICEREF *nref;
306            if (!not->noticeref) {
307                if (!(nref = NOTICEREF_new()))
308                    goto merr;
309                not->noticeref = nref;
310            } else
311                nref = not->noticeref;
312            if (ia5org)
313                nref->organization->type = V_ASN1_IA5STRING;
314            else
315                nref->organization->type = V_ASN1_VISIBLESTRING;
316            if (!ASN1_STRING_set(nref->organization, cnf->value,
317                                 strlen(cnf->value)))
318                goto merr;
319        } else if (!strcmp(cnf->name, "noticeNumbers")) {
320            NOTICEREF *nref;
321            STACK_OF(CONF_VALUE) *nos;
322            if (!not->noticeref) {
323                if (!(nref = NOTICEREF_new()))
324                    goto merr;
325                not->noticeref = nref;
326            } else
327                nref = not->noticeref;
328            nos = X509V3_parse_list(cnf->value);
329            if (!nos || !sk_CONF_VALUE_num(nos)) {
330                X509V3err(X509V3_F_NOTICE_SECTION, X509V3_R_INVALID_NUMBERS);
331                X509V3_conf_err(cnf);
332                goto err;
333            }
334            ret = nref_nos(nref->noticenos, nos);
335            sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
336            if (!ret)
337                goto err;
338        } else {
339            X509V3err(X509V3_F_NOTICE_SECTION, X509V3_R_INVALID_OPTION);
340            X509V3_conf_err(cnf);
341            goto err;
342        }
343    }
344
345    if (not->noticeref &&
346        (!not->noticeref->noticenos || !not->noticeref->organization)) {
347        X509V3err(X509V3_F_NOTICE_SECTION,
348                  X509V3_R_NEED_ORGANIZATION_AND_NUMBERS);
349        goto err;
350    }
351
352    return qual;
353
354 merr:
355    X509V3err(X509V3_F_NOTICE_SECTION, ERR_R_MALLOC_FAILURE);
356
357 err:
358    POLICYQUALINFO_free(qual);
359    return NULL;
360}
361
362static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos)
363{
364    CONF_VALUE *cnf;
365    ASN1_INTEGER *aint;
366
367    int i;
368
369    for (i = 0; i < sk_CONF_VALUE_num(nos); i++) {
370        cnf = sk_CONF_VALUE_value(nos, i);
371        if (!(aint = s2i_ASN1_INTEGER(NULL, cnf->name))) {
372            X509V3err(X509V3_F_NREF_NOS, X509V3_R_INVALID_NUMBER);
373            goto err;
374        }
375        if (!sk_ASN1_INTEGER_push(nnums, aint))
376            goto merr;
377    }
378    return 1;
379
380 merr:
381    X509V3err(X509V3_F_NREF_NOS, ERR_R_MALLOC_FAILURE);
382
383 err:
384    sk_ASN1_INTEGER_pop_free(nnums, ASN1_STRING_free);
385    return 0;
386}
387
388static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
389                       BIO *out, int indent)
390{
391    int i;
392    POLICYINFO *pinfo;
393    /* First print out the policy OIDs */
394    for (i = 0; i < sk_POLICYINFO_num(pol); i++) {
395        pinfo = sk_POLICYINFO_value(pol, i);
396        BIO_printf(out, "%*sPolicy: ", indent, "");
397        i2a_ASN1_OBJECT(out, pinfo->policyid);
398        BIO_puts(out, "\n");
399        if (pinfo->qualifiers)
400            print_qualifiers(out, pinfo->qualifiers, indent + 2);
401    }
402    return 1;
403}
404
405static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
406                             int indent)
407{
408    POLICYQUALINFO *qualinfo;
409    int i;
410    for (i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
411        qualinfo = sk_POLICYQUALINFO_value(quals, i);
412        switch (OBJ_obj2nid(qualinfo->pqualid)) {
413        case NID_id_qt_cps:
414            BIO_printf(out, "%*sCPS: %s\n", indent, "",
415                       qualinfo->d.cpsuri->data);
416            break;
417
418        case NID_id_qt_unotice:
419            BIO_printf(out, "%*sUser Notice:\n", indent, "");
420            print_notice(out, qualinfo->d.usernotice, indent + 2);
421            break;
422
423        default:
424            BIO_printf(out, "%*sUnknown Qualifier: ", indent + 2, "");
425
426            i2a_ASN1_OBJECT(out, qualinfo->pqualid);
427            BIO_puts(out, "\n");
428            break;
429        }
430    }
431}
432
433static void print_notice(BIO *out, USERNOTICE *notice, int indent)
434{
435    int i;
436    if (notice->noticeref) {
437        NOTICEREF *ref;
438        ref = notice->noticeref;
439        BIO_printf(out, "%*sOrganization: %s\n", indent, "",
440                   ref->organization->data);
441        BIO_printf(out, "%*sNumber%s: ", indent, "",
442                   sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
443        for (i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
444            ASN1_INTEGER *num;
445            char *tmp;
446            num = sk_ASN1_INTEGER_value(ref->noticenos, i);
447            if (i)
448                BIO_puts(out, ", ");
449            tmp = i2s_ASN1_INTEGER(NULL, num);
450            BIO_puts(out, tmp);
451            OPENSSL_free(tmp);
452        }
453        BIO_puts(out, "\n");
454    }
455    if (notice->exptext)
456        BIO_printf(out, "%*sExplicit Text: %s\n", indent, "",
457                   notice->exptext->data);
458}
459
460void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent)
461{
462    const X509_POLICY_DATA *dat = node->data;
463
464    BIO_printf(out, "%*sPolicy: ", indent, "");
465
466    i2a_ASN1_OBJECT(out, dat->valid_policy);
467    BIO_puts(out, "\n");
468    BIO_printf(out, "%*s%s\n", indent + 2, "",
469               node_data_critical(dat) ? "Critical" : "Non Critical");
470    if (dat->qualifier_set)
471        print_qualifiers(out, dat->qualifier_set, indent + 2);
472    else
473        BIO_printf(out, "%*sNo Qualifiers\n", indent + 2, "");
474}
475
476IMPLEMENT_STACK_OF(X509_POLICY_NODE)
477