remove needless empty lines when printing certificates
[openssl.git] / crypto / x509v3 / v3_crld.c
1 /*
2  * Copyright 1999-2016 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 "internal/x509_int.h"
18 #include "ext_dat.h"
19
20 static void *v2i_crld(const X509V3_EXT_METHOD *method,
21                       X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
22 static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
23                      int indent);
24
25 const X509V3_EXT_METHOD v3_crld = {
26     NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
27     0, 0, 0, 0,
28     0, 0,
29     0,
30     v2i_crld,
31     i2r_crldp, 0,
32     NULL
33 };
34
35 const X509V3_EXT_METHOD v3_freshest_crl = {
36     NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
37     0, 0, 0, 0,
38     0, 0,
39     0,
40     v2i_crld,
41     i2r_crldp, 0,
42     NULL
43 };
44
45 static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx,
46                                                     char *sect)
47 {
48     STACK_OF(CONF_VALUE) *gnsect;
49     STACK_OF(GENERAL_NAME) *gens;
50     if (*sect == '@')
51         gnsect = X509V3_get_section(ctx, sect + 1);
52     else
53         gnsect = X509V3_parse_list(sect);
54     if (!gnsect) {
55         X509V3err(X509V3_F_GNAMES_FROM_SECTNAME, X509V3_R_SECTION_NOT_FOUND);
56         return NULL;
57     }
58     gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
59     if (*sect == '@')
60         X509V3_section_free(ctx, gnsect);
61     else
62         sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
63     return gens;
64 }
65
66 static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
67                                CONF_VALUE *cnf)
68 {
69     STACK_OF(GENERAL_NAME) *fnm = NULL;
70     STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
71
72     if (strncmp(cnf->name, "fullname", 9) == 0) {
73         fnm = gnames_from_sectname(ctx, cnf->value);
74         if (!fnm)
75             goto err;
76     } else if (strcmp(cnf->name, "relativename") == 0) {
77         int ret;
78         STACK_OF(CONF_VALUE) *dnsect;
79         X509_NAME *nm;
80         nm = X509_NAME_new();
81         if (nm == NULL)
82             return -1;
83         dnsect = X509V3_get_section(ctx, cnf->value);
84         if (!dnsect) {
85             X509V3err(X509V3_F_SET_DIST_POINT_NAME,
86                       X509V3_R_SECTION_NOT_FOUND);
87             return -1;
88         }
89         ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
90         X509V3_section_free(ctx, dnsect);
91         rnm = nm->entries;
92         nm->entries = NULL;
93         X509_NAME_free(nm);
94         if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
95             goto err;
96         /*
97          * Since its a name fragment can't have more than one RDNSequence
98          */
99         if (sk_X509_NAME_ENTRY_value(rnm,
100                                      sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
101             X509V3err(X509V3_F_SET_DIST_POINT_NAME,
102                       X509V3_R_INVALID_MULTIPLE_RDNS);
103             goto err;
104         }
105     } else
106         return 0;
107
108     if (*pdp) {
109         X509V3err(X509V3_F_SET_DIST_POINT_NAME,
110                   X509V3_R_DISTPOINT_ALREADY_SET);
111         goto err;
112     }
113
114     *pdp = DIST_POINT_NAME_new();
115     if (*pdp == NULL)
116         goto err;
117     if (fnm) {
118         (*pdp)->type = 0;
119         (*pdp)->name.fullname = fnm;
120     } else {
121         (*pdp)->type = 1;
122         (*pdp)->name.relativename = rnm;
123     }
124
125     return 1;
126
127  err:
128     sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
129     sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
130     return -1;
131 }
132
133 static const BIT_STRING_BITNAME reason_flags[] = {
134     {0, "Unused", "unused"},
135     {1, "Key Compromise", "keyCompromise"},
136     {2, "CA Compromise", "CACompromise"},
137     {3, "Affiliation Changed", "affiliationChanged"},
138     {4, "Superseded", "superseded"},
139     {5, "Cessation Of Operation", "cessationOfOperation"},
140     {6, "Certificate Hold", "certificateHold"},
141     {7, "Privilege Withdrawn", "privilegeWithdrawn"},
142     {8, "AA Compromise", "AACompromise"},
143     {-1, NULL, NULL}
144 };
145
146 static int set_reasons(ASN1_BIT_STRING **preas, char *value)
147 {
148     STACK_OF(CONF_VALUE) *rsk = NULL;
149     const BIT_STRING_BITNAME *pbn;
150     const char *bnam;
151     int i, ret = 0;
152     rsk = X509V3_parse_list(value);
153     if (rsk == NULL)
154         return 0;
155     if (*preas != NULL)
156         goto err;
157     for (i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
158         bnam = sk_CONF_VALUE_value(rsk, i)->name;
159         if (*preas == NULL) {
160             *preas = ASN1_BIT_STRING_new();
161             if (*preas == NULL)
162                 goto err;
163         }
164         for (pbn = reason_flags; pbn->lname; pbn++) {
165             if (strcmp(pbn->sname, bnam) == 0) {
166                 if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1))
167                     goto err;
168                 break;
169             }
170         }
171         if (!pbn->lname)
172             goto err;
173     }
174     ret = 1;
175
176  err:
177     sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
178     return ret;
179 }
180
181 static int print_reasons(BIO *out, const char *rname,
182                          ASN1_BIT_STRING *rflags, int indent)
183 {
184     int first = 1;
185     const BIT_STRING_BITNAME *pbn;
186     BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
187     for (pbn = reason_flags; pbn->lname; pbn++) {
188         if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum)) {
189             if (first)
190                 first = 0;
191             else
192                 BIO_puts(out, ", ");
193             BIO_puts(out, pbn->lname);
194         }
195     }
196     if (first)
197         BIO_puts(out, "<EMPTY>\n");
198     else
199         BIO_puts(out, "\n");
200     return 1;
201 }
202
203 static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
204                                       STACK_OF(CONF_VALUE) *nval)
205 {
206     int i;
207     CONF_VALUE *cnf;
208     DIST_POINT *point = DIST_POINT_new();
209
210     if (point == NULL)
211         goto err;
212     for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
213         int ret;
214         cnf = sk_CONF_VALUE_value(nval, i);
215         ret = set_dist_point_name(&point->distpoint, ctx, cnf);
216         if (ret > 0)
217             continue;
218         if (ret < 0)
219             goto err;
220         if (strcmp(cnf->name, "reasons") == 0) {
221             if (!set_reasons(&point->reasons, cnf->value))
222                 goto err;
223         } else if (strcmp(cnf->name, "CRLissuer") == 0) {
224             point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
225             if (!point->CRLissuer)
226                 goto err;
227         }
228     }
229
230     return point;
231
232  err:
233     DIST_POINT_free(point);
234     return NULL;
235 }
236
237 static void *v2i_crld(const X509V3_EXT_METHOD *method,
238                       X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
239 {
240     STACK_OF(DIST_POINT) *crld;
241     GENERAL_NAMES *gens = NULL;
242     GENERAL_NAME *gen = NULL;
243     CONF_VALUE *cnf;
244     const int num = sk_CONF_VALUE_num(nval);
245     int i;
246
247     crld = sk_DIST_POINT_new_reserve(NULL, num);
248     if (crld == NULL)
249         goto merr;
250     for (i = 0; i < num; i++) {
251         DIST_POINT *point;
252
253         cnf = sk_CONF_VALUE_value(nval, i);
254         if (!cnf->value) {
255             STACK_OF(CONF_VALUE) *dpsect;
256             dpsect = X509V3_get_section(ctx, cnf->name);
257             if (!dpsect)
258                 goto err;
259             point = crldp_from_section(ctx, dpsect);
260             X509V3_section_free(ctx, dpsect);
261             if (!point)
262                 goto err;
263             sk_DIST_POINT_push(crld, point); /* no failure as it was reserved */
264         } else {
265             if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
266                 goto err;
267             if ((gens = GENERAL_NAMES_new()) == NULL)
268                 goto merr;
269             if (!sk_GENERAL_NAME_push(gens, gen))
270                 goto merr;
271             gen = NULL;
272             if ((point = DIST_POINT_new()) == NULL)
273                 goto merr;
274             sk_DIST_POINT_push(crld, point); /* no failure as it was reserved */
275             if ((point->distpoint = DIST_POINT_NAME_new()) == NULL)
276                 goto merr;
277             point->distpoint->name.fullname = gens;
278             point->distpoint->type = 0;
279             gens = NULL;
280         }
281     }
282     return crld;
283
284  merr:
285     X509V3err(X509V3_F_V2I_CRLD, ERR_R_MALLOC_FAILURE);
286  err:
287     GENERAL_NAME_free(gen);
288     GENERAL_NAMES_free(gens);
289     sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
290     return NULL;
291 }
292
293 static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
294                   void *exarg)
295 {
296     DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
297
298     switch (operation) {
299     case ASN1_OP_NEW_POST:
300         dpn->dpname = NULL;
301         break;
302
303     case ASN1_OP_FREE_POST:
304         X509_NAME_free(dpn->dpname);
305         break;
306     }
307     return 1;
308 }
309
310
311 ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
312         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
313         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
314 } ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
315
316
317 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
318
319 ASN1_SEQUENCE(DIST_POINT) = {
320         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
321         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
322         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
323 } ASN1_SEQUENCE_END(DIST_POINT)
324
325 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
326
327 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) =
328         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
329 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
330
331 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
332
333 ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
334         ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
335         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
336         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
337         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
338         ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
339         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
340 } ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
341
342 IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
343
344 static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
345                    int indent);
346 static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
347                      STACK_OF(CONF_VALUE) *nval);
348
349 const X509V3_EXT_METHOD v3_idp = {
350     NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
351     ASN1_ITEM_ref(ISSUING_DIST_POINT),
352     0, 0, 0, 0,
353     0, 0,
354     0,
355     v2i_idp,
356     i2r_idp, 0,
357     NULL
358 };
359
360 static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
361                      STACK_OF(CONF_VALUE) *nval)
362 {
363     ISSUING_DIST_POINT *idp = NULL;
364     CONF_VALUE *cnf;
365     char *name, *val;
366     int i, ret;
367     idp = ISSUING_DIST_POINT_new();
368     if (idp == NULL)
369         goto merr;
370     for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
371         cnf = sk_CONF_VALUE_value(nval, i);
372         name = cnf->name;
373         val = cnf->value;
374         ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
375         if (ret > 0)
376             continue;
377         if (ret < 0)
378             goto err;
379         if (strcmp(name, "onlyuser") == 0) {
380             if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
381                 goto err;
382         } else if (strcmp(name, "onlyCA") == 0) {
383             if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
384                 goto err;
385         } else if (strcmp(name, "onlyAA") == 0) {
386             if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
387                 goto err;
388         } else if (strcmp(name, "indirectCRL") == 0) {
389             if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
390                 goto err;
391         } else if (strcmp(name, "onlysomereasons") == 0) {
392             if (!set_reasons(&idp->onlysomereasons, val))
393                 goto err;
394         } else {
395             X509V3err(X509V3_F_V2I_IDP, X509V3_R_INVALID_NAME);
396             X509V3_conf_err(cnf);
397             goto err;
398         }
399     }
400     return idp;
401
402  merr:
403     X509V3err(X509V3_F_V2I_IDP, ERR_R_MALLOC_FAILURE);
404  err:
405     ISSUING_DIST_POINT_free(idp);
406     return NULL;
407 }
408
409 static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
410 {
411     int i;
412     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
413         if (i > 0)
414             BIO_puts(out, "\n");
415         BIO_printf(out, "%*s", indent + 2, "");
416         GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
417     }
418     return 1;
419 }
420
421 static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
422 {
423     if (dpn->type == 0) {
424         BIO_printf(out, "%*sFull Name:\n", indent, "");
425         print_gens(out, dpn->name.fullname, indent);
426     } else {
427         X509_NAME ntmp;
428         ntmp.entries = dpn->name.relativename;
429         BIO_printf(out, "%*sRelative Name:\n%*s", indent, "", indent + 2, "");
430         X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
431         BIO_puts(out, "\n");
432     }
433     return 1;
434 }
435
436 static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
437                    int indent)
438 {
439     ISSUING_DIST_POINT *idp = pidp;
440     if (idp->distpoint)
441         print_distpoint(out, idp->distpoint, indent);
442     if (idp->onlyuser > 0)
443         BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
444     if (idp->onlyCA > 0)
445         BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
446     if (idp->indirectCRL > 0)
447         BIO_printf(out, "%*sIndirect CRL\n", indent, "");
448     if (idp->onlysomereasons)
449         print_reasons(out, "Only Some Reasons", idp->onlysomereasons, indent);
450     if (idp->onlyattr > 0)
451         BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
452     if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
453         && (idp->indirectCRL <= 0) && !idp->onlysomereasons
454         && (idp->onlyattr <= 0))
455         BIO_printf(out, "%*s<EMPTY>\n", indent, "");
456
457     return 1;
458 }
459
460 static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
461                      int indent)
462 {
463     STACK_OF(DIST_POINT) *crld = pcrldp;
464     DIST_POINT *point;
465     int i;
466     for (i = 0; i < sk_DIST_POINT_num(crld); i++) {
467         if (i > 0)
468             BIO_puts(out, "\n");
469         point = sk_DIST_POINT_value(crld, i);
470         if (point->distpoint)
471             print_distpoint(out, point->distpoint, indent);
472         if (point->reasons)
473             print_reasons(out, "Reasons", point->reasons, indent);
474         if (point->CRLissuer) {
475             BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
476             print_gens(out, point->CRLissuer, indent);
477         }
478     }
479     return 1;
480 }
481
482 int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
483 {
484     int i;
485     STACK_OF(X509_NAME_ENTRY) *frag;
486     X509_NAME_ENTRY *ne;
487     if (!dpn || (dpn->type != 1))
488         return 1;
489     frag = dpn->name.relativename;
490     dpn->dpname = X509_NAME_dup(iname);
491     if (!dpn->dpname)
492         return 0;
493     for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++) {
494         ne = sk_X509_NAME_ENTRY_value(frag, i);
495         if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1)) {
496             X509_NAME_free(dpn->dpname);
497             dpn->dpname = NULL;
498             return 0;
499         }
500     }
501     /* generate cached encoding of name */
502     if (i2d_X509_NAME(dpn->dpname, NULL) < 0) {
503         X509_NAME_free(dpn->dpname);
504         dpn->dpname = NULL;
505         return 0;
506     }
507     return 1;
508 }