Constify version strings and some structures.
[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 const 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 set_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_SET_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_SET_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_SET_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 static const BIT_STRING_BITNAME reason_flags[] = {
183 {1, "Key Compromise", "keyCompromise"},
184 {2, "CA Compromise", "CACompromise"},
185 {3, "Affiliation Changed", "affiliationChanged"},
186 {4, "Superseded", "superseded"},
187 {5, "Cessation Of Operation", "cessationOfOperation"},
188 {6, "Certificate Hold", "certificateHold"},
189 {7, "Privilege Withdrawn", "privilegeWithdrawn"},
190 {8, "AA Compromise", "AACompromise"},
191 {-1, NULL, NULL}
192 };
193
194 static int set_reasons(ASN1_BIT_STRING **preas, char *value)
195         {
196         STACK_OF(CONF_VALUE) *rsk = NULL;
197         const BIT_STRING_BITNAME *pbn;
198         const char *bnam;
199         int i, ret = 0;
200         rsk = X509V3_parse_list(value);
201         if (!rsk)
202                 return 0;
203         if (*preas)
204                 return 0;
205         for (i = 0; i < sk_CONF_VALUE_num(rsk); i++)
206                 {
207                 bnam = sk_CONF_VALUE_value(rsk, i)->name;
208                 if (!*preas)
209                         {
210                         *preas = ASN1_BIT_STRING_new();
211                         if (!*preas)
212                                 goto err;
213                         }
214                 for (pbn = reason_flags; pbn->lname; pbn++)
215                         {
216                         if (!strcmp(pbn->sname, bnam))
217                                 {
218                                 if (!ASN1_BIT_STRING_set_bit(*preas,
219                                                         pbn->bitnum, 1))
220                                         goto err;
221                                 break;
222                                 }
223                         }
224                 if (!pbn->lname)
225                         goto err;
226                 }
227         ret = 1;
228
229         err:
230         sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
231         return ret;
232         }
233
234 static int print_reasons(BIO *out, const char *rname,
235                         ASN1_BIT_STRING *rflags, int indent)
236         {
237         int first = 1;
238         const BIT_STRING_BITNAME *pbn;
239         BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
240         for (pbn = reason_flags; pbn->lname; pbn++)
241                 {
242                 if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum))
243                         {
244                         if (first)
245                                 first = 0;
246                         else
247                                 BIO_puts(out, ", ");
248                         BIO_puts(out, pbn->lname);
249                         }
250                 }
251         if (first)
252                 BIO_puts(out, "<EMPTY>\n");
253         else
254                 BIO_puts(out, "\n");
255         return 1;
256         }
257
258 static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
259                                                 STACK_OF(CONF_VALUE) *nval)
260         {
261         int i;
262         CONF_VALUE *cnf;
263         DIST_POINT *point = NULL;
264         point = DIST_POINT_new();
265         if (!point)
266                 goto err;
267         for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
268                 {
269                 int ret;
270                 cnf = sk_CONF_VALUE_value(nval, i);
271                 ret = set_dist_point_name(&point->distpoint, ctx, cnf);
272                 if (ret > 0)
273                         continue;
274                 if (ret < 0)
275                         goto err;
276                 if (!strcmp(cnf->name, "reasons"))
277                         {
278                         if (!set_reasons(&point->reasons, cnf->value))
279                                 goto err;
280                         }
281                 else if (!strcmp(cnf->name, "CRLissuer"))
282                         {
283                         point->CRLissuer =
284                                 gnames_from_sectname(ctx, cnf->value);
285                         if (!point->CRLissuer)
286                                 goto err;
287                         }
288                 }
289
290         return point;
291                         
292
293         err:
294         if (point)
295                 DIST_POINT_free(point);
296         return NULL;
297         }
298
299 static void *v2i_crld(X509V3_EXT_METHOD *method,
300                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
301         {
302         STACK_OF(DIST_POINT) *crld = NULL;
303         GENERAL_NAMES *gens = NULL;
304         GENERAL_NAME *gen = NULL;
305         CONF_VALUE *cnf;
306         int i;
307         if(!(crld = sk_DIST_POINT_new_null())) goto merr;
308         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
309                 DIST_POINT *point;
310                 cnf = sk_CONF_VALUE_value(nval, i);
311                 if (!cnf->value)
312                         {
313                         STACK_OF(CONF_VALUE) *dpsect;
314                         dpsect = X509V3_get_section(ctx, cnf->name);
315                         if (!dpsect)
316                                 goto err;
317                         point = crldp_from_section(ctx, dpsect);
318                         X509V3_section_free(ctx, dpsect);
319                         if (!point)
320                                 goto err;
321                         if(!sk_DIST_POINT_push(crld, point))
322                                 {
323                                 DIST_POINT_free(point);
324                                 goto merr;
325                                 }
326                         }
327                 else
328                         {
329                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
330                                 goto err; 
331                         if(!(gens = GENERAL_NAMES_new()))
332                                 goto merr;
333                         if(!sk_GENERAL_NAME_push(gens, gen))
334                                 goto merr;
335                         gen = NULL;
336                         if(!(point = DIST_POINT_new()))
337                                 goto merr;
338                         if(!sk_DIST_POINT_push(crld, point))
339                                 {
340                                 DIST_POINT_free(point);
341                                 goto merr;
342                                 }
343                         if(!(point->distpoint = DIST_POINT_NAME_new()))
344                                 goto merr;
345                         point->distpoint->name.fullname = gens;
346                         point->distpoint->type = 0;
347                         gens = NULL;
348                         }
349         }
350         return crld;
351
352         merr:
353         X509V3err(X509V3_F_V2I_CRLD,ERR_R_MALLOC_FAILURE);
354         err:
355         GENERAL_NAME_free(gen);
356         GENERAL_NAMES_free(gens);
357         sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
358         return NULL;
359 }
360
361 IMPLEMENT_STACK_OF(DIST_POINT)
362 IMPLEMENT_ASN1_SET_OF(DIST_POINT)
363
364
365 ASN1_CHOICE(DIST_POINT_NAME) = {
366         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
367         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
368 } ASN1_CHOICE_END(DIST_POINT_NAME)
369
370 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
371
372 ASN1_SEQUENCE(DIST_POINT) = {
373         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
374         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
375         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
376 } ASN1_SEQUENCE_END(DIST_POINT)
377
378 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
379
380 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) = 
381         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
382 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
383
384 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
385
386 ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
387         ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
388         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
389         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
390         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
391         ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
392         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
393 } ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
394
395 IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
396
397 static int i2r_idp(X509V3_EXT_METHOD *method,
398              void *pidp, BIO *out, int indent);
399 static void *v2i_idp(X509V3_EXT_METHOD *method,
400                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
401
402 const X509V3_EXT_METHOD v3_idp =
403         {
404         NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
405         ASN1_ITEM_ref(ISSUING_DIST_POINT),
406         0,0,0,0,
407         0,0,
408         0,
409         v2i_idp,
410         i2r_idp,0,
411         NULL
412         };
413
414 static void *v2i_idp(X509V3_EXT_METHOD *method,
415                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
416         {
417         ISSUING_DIST_POINT *idp = NULL;
418         CONF_VALUE *cnf;
419         char *name, *val;
420         int i, ret;
421         idp = ISSUING_DIST_POINT_new();
422         if (!idp)
423                 goto merr;
424         for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
425                 {
426                 cnf = sk_CONF_VALUE_value(nval, i);
427                 name = cnf->name;
428                 val = cnf->value;
429                 ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
430                 if (ret > 0)
431                         continue;
432                 if (ret < 0)
433                         goto err;
434                 if (!strcmp(name, "onlyuser"))
435                         {
436                         if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
437                                 goto err;
438                         }
439                 else if (!strcmp(name, "onlyCA"))
440                         {
441                         if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
442                                 goto err;
443                         }
444                 else if (!strcmp(name, "onlyAA"))
445                         {
446                         if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
447                                 goto err;
448                         }
449                 else if (!strcmp(name, "indirectCRL"))
450                         {
451                         if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
452                                 goto err;
453                         }
454                 else if (!strcmp(name, "onlysomereasons"))
455                         {
456                         if (!set_reasons(&idp->onlysomereasons, val))
457                                 goto err;
458                         }
459                 else
460                         {
461                         X509V3err(X509V3_F_V2I_IDP, X509V3_R_INVALID_NAME);
462                         X509V3_conf_err(cnf);
463                         goto err;
464                         }
465                 }
466         return idp;
467
468         merr:
469         X509V3err(X509V3_F_V2I_IDP,ERR_R_MALLOC_FAILURE);
470         err:
471         ISSUING_DIST_POINT_free(idp);
472         return NULL;
473         }
474
475 static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
476         {
477         int i;
478         for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
479                 {
480                 BIO_printf(out, "%*s", indent + 2, "");
481                 GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
482                 BIO_puts(out, "\n");
483                 }
484         return 1;
485         }
486
487 static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
488         {
489         if (dpn->type == 0)
490                 {
491                 BIO_printf(out, "%*sFull Name:\n", indent, "");
492                 print_gens(out, dpn->name.fullname, indent);
493                 }
494         else
495                 {
496                 X509_NAME ntmp;
497                 ntmp.entries = dpn->name.relativename;
498                 BIO_printf(out, "%*sRelative Name:\n%*s",
499                                                 indent, "", indent + 2, "");
500                 X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
501                 BIO_puts(out, "\n");
502                 }
503         return 1;
504         }
505
506 static int i2r_idp(X509V3_EXT_METHOD *method, void *pidp, BIO *out, int indent)
507         {
508         ISSUING_DIST_POINT *idp = pidp;
509         if (idp->distpoint)
510                 print_distpoint(out, idp->distpoint, indent);
511         if (idp->onlyuser > 0)
512                 BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
513         if (idp->onlyCA > 0)
514                 BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
515         if (idp->indirectCRL > 0)
516                 BIO_printf(out, "%*sIndirect CRL\n", indent, "");
517         if (idp->onlysomereasons)
518                 print_reasons(out, "Only Some Reasons", 
519                                 idp->onlysomereasons, indent);
520         if (idp->onlyattr > 0)
521                 BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
522         if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
523                 && (idp->indirectCRL <= 0) && !idp->onlysomereasons
524                 && (idp->onlyattr <= 0))
525                 BIO_printf(out, "%*s<EMPTY>\n", indent, "");
526                 
527         return 1;
528         }
529
530 static int i2r_crldp(X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
531                                                                 int indent)
532         {
533         STACK_OF(DIST_POINT) *crld = pcrldp;
534         DIST_POINT *point;
535         int i;
536         for(i = 0; i < sk_DIST_POINT_num(crld); i++)
537                 {
538                 BIO_puts(out, "\n");
539                 point = sk_DIST_POINT_value(crld, i);
540                 if(point->distpoint)
541                         print_distpoint(out, point->distpoint, indent);
542                 if(point->reasons) 
543                         print_reasons(out, "Reasons", point->reasons,
544                                                                 indent);
545                 if(point->CRLissuer)
546                         {
547                         BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
548                         print_gens(out, point->CRLissuer, indent);
549                         }
550                 }
551         return 1;
552         }