bdb3dd523bc0bca24136a4df07baecd78074ed43
[openssl.git] / crypto / x509v3 / v3_crld.c
1 /* v3_crld.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999, 2005 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  *    licensing@OpenSSL.org.
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  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/conf.h>
62 #include <openssl/asn1.h>
63 #include <openssl/asn1t.h>
64 #include <openssl/x509v3.h>
65
66 static void *v2i_crld(X509V3_EXT_METHOD *method,
67                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
68 static int i2r_crldp(X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
69                                                                 int indent);
70
71 X509V3_EXT_METHOD v3_crld =
72         {
73         NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
74         0,0,0,0,
75         0,0,
76         0,
77         v2i_crld,
78         i2r_crldp,0,
79         NULL
80         };
81
82 static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx, char *sect)
83         {
84         STACK_OF(CONF_VALUE) *gnsect;
85         STACK_OF(GENERAL_NAME) *gens;
86         if (*sect == '@')
87                 gnsect = X509V3_get_section(ctx, sect + 1);
88         else
89                 gnsect = X509V3_parse_list(sect);
90         if (!gnsect)
91                 {
92                 X509V3err(X509V3_F_GNAMES_FROM_SECTNAME,
93                                                 X509V3_R_SECTION_NOT_FOUND);
94                 return NULL;
95                 }
96         gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
97         if (*sect == '@')
98                 X509V3_section_free(ctx, gnsect);
99         else
100                 sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
101         return gens;
102         }
103
104 static int get_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
105                                                         CONF_VALUE *cnf)
106         {
107         STACK_OF(GENERAL_NAME) *fnm = NULL;
108         STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
109         if (!strncmp(cnf->name, "fullname", 9))
110                 {
111                 fnm = gnames_from_sectname(ctx, cnf->value);
112                 if (!fnm)
113                         goto err;
114                 }
115         else if (!strcmp(cnf->name, "relativename"))
116                 {
117                 int ret;
118                 STACK_OF(CONF_VALUE) *dnsect;
119                 X509_NAME *nm;
120                 nm = X509_NAME_new();
121                 if (!nm)
122                         return -1;
123                 dnsect = X509V3_get_section(ctx, cnf->value);
124                 if (!dnsect)
125                         {
126                         X509V3err(X509V3_F_GET_DIST_POINT_NAME,
127                                                 X509V3_R_SECTION_NOT_FOUND);
128                         return -1;
129                         }
130                 ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
131                 X509V3_section_free(ctx, dnsect);
132                 rnm = nm->entries;
133                 nm->entries = NULL;
134                 X509_NAME_free(nm);
135                 if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
136                         goto err;
137                 /* Since its a name fragment can't have more than one
138                  * RDNSequence
139                  */
140                 if (sk_X509_NAME_ENTRY_value(rnm,
141                                 sk_X509_NAME_ENTRY_num(rnm) - 1)->set)
142                         {
143                         X509V3err(X509V3_F_GET_DIST_POINT_NAME,
144                                                 X509V3_R_INVAID_MULTIPLE_RDNS);
145                         goto err;
146                         }
147                 }
148         else
149                 return 0;
150
151         if (*pdp)
152                 {
153                 X509V3err(X509V3_F_GET_DIST_POINT_NAME,
154                                                 X509V3_R_DISTPOINT_ALREADY_SET);
155                 goto err;
156                 }
157
158         *pdp = DIST_POINT_NAME_new();
159         if (!*pdp)
160                 goto err;
161         if (fnm)
162                 {
163                 (*pdp)->type = 0;
164                 (*pdp)->name.fullname = fnm;
165                 }
166         else
167                 {
168                 (*pdp)->type = 1;
169                 (*pdp)->name.relativename = rnm;
170                 }
171
172         return 1;
173                 
174         err:
175         if (fnm)
176                 sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
177         if (rnm)
178                 sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
179         return -1;
180         }
181
182
183 static const BIT_STRING_BITNAME reason_flags[] = {
184 {1, "Key Compromise", "keyCompromise"},
185 {2, "CA Compromise", "CACompromise"},
186 {3, "Affiliation Changed", "affiliationChanged"},
187 {4, "Superseded", "superseded"},
188 {5, "Cessation Of Operation", "cessationOfOperation"},
189 {6, "Certificate Hold", "certificateHold"},
190 {7, "Privilege Withdrawn", "privilegeWithdrawn"},
191 {8, "AA Compromise", "AACompromise"},
192 {-1, NULL, NULL}
193 };
194
195 static int set_reasons(ASN1_BIT_STRING **preas, char *value)
196         {
197         STACK_OF(CONF_VALUE) *rsk = NULL;
198         const BIT_STRING_BITNAME *pbn;
199         const char *bnam;
200         int i, ret = 0;
201         rsk = X509V3_parse_list(value);
202         if (!rsk)
203                 return 0;
204         if (*preas)
205                 return 0;
206         for (i = 0; i < sk_CONF_VALUE_num(rsk); i++)
207                 {
208                 bnam = sk_CONF_VALUE_value(rsk, i)->name;
209                 if (!*preas)
210                         {
211                         *preas = ASN1_BIT_STRING_new();
212                         if (!*preas)
213                                 goto err;
214                         }
215                 for (pbn = reason_flags; pbn->lname; pbn++)
216                         {
217                         if (!strcmp(pbn->sname, bnam))
218                                 {
219                                 if (!ASN1_BIT_STRING_set_bit(*preas,
220                                                         pbn->bitnum, 1))
221                                         goto err;
222                                 break;
223                                 }
224                         }
225                 if (!pbn->lname)
226                         goto err;
227                 }
228         ret = 1;
229
230         err:
231         sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
232         return ret;
233         }
234
235 static int print_reasons(BIO *out, const char *rname,
236                         ASN1_BIT_STRING *rflags, int indent)
237         {
238         int first = 1;
239         const BIT_STRING_BITNAME *pbn;
240         BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
241         for (pbn = reason_flags; pbn->lname; pbn++)
242                 {
243                 if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum))
244                         {
245                         if (first)
246                                 first = 0;
247                         else
248                                 BIO_puts(out, ", ");
249                         BIO_puts(out, pbn->lname);
250                         }
251                 }
252         if (first)
253                 BIO_puts(out, "<EMPTY>\n");
254         else
255                 BIO_puts(out, "\n");
256         return 1;
257         }
258
259 static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
260                                                 STACK_OF(CONF_VALUE) *nval)
261         {
262         int i;
263         CONF_VALUE *cnf;
264         DIST_POINT *point = NULL;
265         point = DIST_POINT_new();
266         if (!point)
267                 goto err;
268         for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
269                 {
270                 int ret;
271                 cnf = sk_CONF_VALUE_value(nval, i);
272                 ret = get_dist_point_name(&point->distpoint, ctx, cnf);
273                 if (ret > 0)
274                         continue;
275                 if (ret < 0)
276                         goto err;
277                 if (!strcmp(cnf->name, "reasons"))
278                         {
279                         if (!set_reasons(&point->reasons, cnf->value))
280                                 goto err;
281                         }
282                 else if (!strcmp(cnf->name, "CRLissuer"))
283                         {
284                         point->CRLissuer =
285                                 gnames_from_sectname(ctx, cnf->value);
286                         if (!point->CRLissuer)
287                                 goto err;
288                         }
289                 }
290
291         return point;
292                         
293
294         err:
295         if (point)
296                 DIST_POINT_free(point);
297         return NULL;
298         }
299
300 static void *v2i_crld(X509V3_EXT_METHOD *method,
301                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
302         {
303         STACK_OF(DIST_POINT) *crld = NULL;
304         GENERAL_NAMES *gens = NULL;
305         GENERAL_NAME *gen = NULL;
306         CONF_VALUE *cnf;
307         int i;
308         if(!(crld = sk_DIST_POINT_new_null())) goto merr;
309         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
310                 DIST_POINT *point;
311                 cnf = sk_CONF_VALUE_value(nval, i);
312                 if (!cnf->value && cnf->name[0] == '@')
313                         {
314                         STACK_OF(CONF_VALUE) *dpsect;
315                         dpsect = X509V3_get_section(ctx, cnf->name + 1);
316                         if (!dpsect)
317                                 goto err;
318                         point = crldp_from_section(ctx, dpsect);
319                         X509V3_section_free(ctx, dpsect);
320                         if (!point)
321                                 goto err;
322                         if(!sk_DIST_POINT_push(crld, point))
323                                 {
324                                 DIST_POINT_free(point);
325                                 goto merr;
326                                 }
327                         }
328                 else
329                         {
330                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
331                                 goto err; 
332                         if(!(gens = GENERAL_NAMES_new()))
333                                 goto merr;
334                         if(!sk_GENERAL_NAME_push(gens, gen))
335                                 goto merr;
336                         gen = NULL;
337                         if(!(point = DIST_POINT_new()))
338                                 goto merr;
339                         if(!sk_DIST_POINT_push(crld, point))
340                                 {
341                                 DIST_POINT_free(point);
342                                 goto merr;
343                                 }
344                         if(!(point->distpoint = DIST_POINT_NAME_new()))
345                                 goto merr;
346                         point->distpoint->name.fullname = gens;
347                         point->distpoint->type = 0;
348                         gens = NULL;
349                         }
350         }
351         return crld;
352
353         merr:
354         X509V3err(X509V3_F_V2I_CRLD,ERR_R_MALLOC_FAILURE);
355         err:
356         GENERAL_NAME_free(gen);
357         GENERAL_NAMES_free(gens);
358         sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
359         return NULL;
360 }
361
362 IMPLEMENT_STACK_OF(DIST_POINT)
363 IMPLEMENT_ASN1_SET_OF(DIST_POINT)
364
365
366 ASN1_CHOICE(DIST_POINT_NAME) = {
367         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
368         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
369 } ASN1_CHOICE_END(DIST_POINT_NAME)
370
371 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
372
373 ASN1_SEQUENCE(DIST_POINT) = {
374         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
375         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
376         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
377 } ASN1_SEQUENCE_END(DIST_POINT)
378
379 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
380
381 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) = 
382         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
383 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
384
385 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
386
387 ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
388         ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
389         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
390         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
391         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
392         ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
393         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
394 } ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
395
396 static int i2r_idp(X509V3_EXT_METHOD *method,
397              void *pidp, BIO *out, int indent);
398
399 X509V3_EXT_METHOD v3_idp =
400         {
401         NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
402         ASN1_ITEM_ref(ISSUING_DIST_POINT),
403         0,0,0,0,
404         0,0,
405         0,0,
406         i2r_idp,0,
407         NULL
408         };
409
410 static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
411         {
412         int i;
413         for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
414                 {
415                 BIO_printf(out, "%*s", indent + 2, "");
416                 GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
417                 BIO_puts(out, "\n");
418                 }
419         return 1;
420         }
421
422 static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
423         {
424         if (dpn->type == 0)
425                 {
426                 BIO_printf(out, "%*sFull Name:\n", indent, "");
427                 print_gens(out, dpn->name.fullname, indent);
428                 }
429         else
430                 {
431                 X509_NAME ntmp;
432                 ntmp.entries = dpn->name.relativename;
433                 BIO_printf(out, "%*sRelative Name:\n%*s",
434                                                 indent, "", indent + 2, "");
435                 X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
436                 BIO_puts(out, "\n");
437                 }
438         return 1;
439         }
440
441 static int i2r_idp(X509V3_EXT_METHOD *method, void *pidp, BIO *out, int indent)
442         {
443         ISSUING_DIST_POINT *idp = pidp;
444         if (idp->distpoint)
445                 print_distpoint(out, idp->distpoint, indent);
446         if (idp->onlyuser > 0)
447                 BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
448         if (idp->onlyCA > 0)
449                 BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
450         if (idp->indirectCRL > 0)
451                 BIO_printf(out, "%*sIndirect CRL\n", indent, "");
452         if (idp->onlysomereasons)
453                 print_reasons(out, "Only Some Reasons", 
454                                 idp->onlysomereasons, indent);
455         if (idp->onlyattr > 0)
456                 BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
457         if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
458                 && (idp->indirectCRL <= 0) && !idp->onlysomereasons
459                 && (idp->onlyattr <= 0))
460                 BIO_printf(out, "%*s<EMPTY>\n", indent, "");
461                 
462         return 1;
463         }
464
465 static int i2r_crldp(X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
466                                                                 int indent)
467         {
468         STACK_OF(DIST_POINT) *crld = pcrldp;
469         DIST_POINT *point;
470         int i;
471         for(i = 0; i < sk_DIST_POINT_num(crld); i++)
472                 {
473                 BIO_puts(out, "\n");
474                 point = sk_DIST_POINT_value(crld, i);
475                 if(point->distpoint)
476                         print_distpoint(out, point->distpoint, indent);
477                 if(point->reasons) 
478                         print_reasons(out, "Reasons", point->reasons,
479                                                                 indent);
480                 if(point->CRLissuer)
481                         {
482                         BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
483                         print_gens(out, point->CRLissuer, indent);
484                         }
485                 }
486         return 1;
487         }