OLD | NEW |
| (Empty) |
1 /* v3_conf.c */ | |
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
3 * project 1999. | |
4 */ | |
5 /* ==================================================================== | |
6 * Copyright (c) 1999-2002 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 /* extension creation utilities */ | |
59 | |
60 | |
61 | |
62 #include <stdio.h> | |
63 #include <ctype.h> | |
64 #include "cryptlib.h" | |
65 #include <openssl/conf.h> | |
66 #include <openssl/x509.h> | |
67 #include <openssl/x509v3.h> | |
68 | |
69 static int v3_check_critical(char **value); | |
70 static int v3_check_generic(char **value); | |
71 static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, in
t crit, char *value); | |
72 static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, int cr
it, int type, X509V3_CTX *ctx); | |
73 static char *conf_lhash_get_string(void *db, char *section, char *value); | |
74 static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section); | |
75 static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid, | |
76 int crit, void *ext_struc); | |
77 static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len); | |
78 /* CONF *conf: Config file */ | |
79 /* char *name: Name */ | |
80 /* char *value: Value */ | |
81 X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name, | |
82 char *value) | |
83 { | |
84 int crit; | |
85 int ext_type; | |
86 X509_EXTENSION *ret; | |
87 crit = v3_check_critical(&value); | |
88 if ((ext_type = v3_check_generic(&value))) | |
89 return v3_generic_extension(name, value, crit, ext_type, ctx); | |
90 ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value); | |
91 if (!ret) | |
92 { | |
93 X509V3err(X509V3_F_X509V3_EXT_NCONF,X509V3_R_ERROR_IN_EXTENSION)
; | |
94 ERR_add_error_data(4,"name=", name, ", value=", value); | |
95 } | |
96 return ret; | |
97 } | |
98 | |
99 /* CONF *conf: Config file */ | |
100 /* char *value: Value */ | |
101 X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid, | |
102 char *value) | |
103 { | |
104 int crit; | |
105 int ext_type; | |
106 crit = v3_check_critical(&value); | |
107 if ((ext_type = v3_check_generic(&value))) | |
108 return v3_generic_extension(OBJ_nid2sn(ext_nid), | |
109 value, crit, ext_type, ctx); | |
110 return do_ext_nconf(conf, ctx, ext_nid, crit, value); | |
111 } | |
112 | |
113 /* CONF *conf: Config file */ | |
114 /* char *value: Value */ | |
115 static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, | |
116 int crit, char *value) | |
117 { | |
118 const X509V3_EXT_METHOD *method; | |
119 X509_EXTENSION *ext; | |
120 STACK_OF(CONF_VALUE) *nval; | |
121 void *ext_struc; | |
122 if (ext_nid == NID_undef) | |
123 { | |
124 X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION_NAME)
; | |
125 return NULL; | |
126 } | |
127 if (!(method = X509V3_EXT_get_nid(ext_nid))) | |
128 { | |
129 X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION); | |
130 return NULL; | |
131 } | |
132 /* Now get internal extension representation based on type */ | |
133 if (method->v2i) | |
134 { | |
135 if(*value == '@') nval = NCONF_get_section(conf, value + 1); | |
136 else nval = X509V3_parse_list(value); | |
137 if(sk_CONF_VALUE_num(nval) <= 0) | |
138 { | |
139 X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_INVALID_EXTENSI
ON_STRING); | |
140 ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",se
ction=", value); | |
141 return NULL; | |
142 } | |
143 ext_struc = method->v2i(method, ctx, nval); | |
144 if(*value != '@') sk_CONF_VALUE_pop_free(nval, | |
145 X509V3_conf_free); | |
146 if(!ext_struc) return NULL; | |
147 } | |
148 else if(method->s2i) | |
149 { | |
150 if(!(ext_struc = method->s2i(method, ctx, value))) return NULL; | |
151 } | |
152 else if(method->r2i) | |
153 { | |
154 if(!ctx->db || !ctx->db_meth) | |
155 { | |
156 X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_NO_CONFIG_DATAB
ASE); | |
157 return NULL; | |
158 } | |
159 if(!(ext_struc = method->r2i(method, ctx, value))) return NULL; | |
160 } | |
161 else | |
162 { | |
163 X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_EXTENSION_SETTING_NOT_S
UPPORTED); | |
164 ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid)); | |
165 return NULL; | |
166 } | |
167 | |
168 ext = do_ext_i2d(method, ext_nid, crit, ext_struc); | |
169 if(method->it) ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it)); | |
170 else method->ext_free(ext_struc); | |
171 return ext; | |
172 | |
173 } | |
174 | |
175 static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid, | |
176 int crit, void *ext_struc) | |
177 { | |
178 unsigned char *ext_der; | |
179 int ext_len; | |
180 ASN1_OCTET_STRING *ext_oct; | |
181 X509_EXTENSION *ext; | |
182 /* Convert internal representation to DER */ | |
183 if (method->it) | |
184 { | |
185 ext_der = NULL; | |
186 ext_len = ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(metho
d->it)); | |
187 if (ext_len < 0) goto merr; | |
188 } | |
189 else | |
190 { | |
191 unsigned char *p; | |
192 ext_len = method->i2d(ext_struc, NULL); | |
193 if(!(ext_der = OPENSSL_malloc(ext_len))) goto merr; | |
194 p = ext_der; | |
195 method->i2d(ext_struc, &p); | |
196 } | |
197 if (!(ext_oct = M_ASN1_OCTET_STRING_new())) goto merr; | |
198 ext_oct->data = ext_der; | |
199 ext_oct->length = ext_len; | |
200 | |
201 ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct); | |
202 if (!ext) goto merr; | |
203 M_ASN1_OCTET_STRING_free(ext_oct); | |
204 | |
205 return ext; | |
206 | |
207 merr: | |
208 X509V3err(X509V3_F_DO_EXT_I2D,ERR_R_MALLOC_FAILURE); | |
209 return NULL; | |
210 | |
211 } | |
212 | |
213 /* Given an internal structure, nid and critical flag create an extension */ | |
214 | |
215 X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc) | |
216 { | |
217 const X509V3_EXT_METHOD *method; | |
218 if (!(method = X509V3_EXT_get_nid(ext_nid))) { | |
219 X509V3err(X509V3_F_X509V3_EXT_I2D,X509V3_R_UNKNOWN_EXTENSION); | |
220 return NULL; | |
221 } | |
222 return do_ext_i2d(method, ext_nid, crit, ext_struc); | |
223 } | |
224 | |
225 /* Check the extension string for critical flag */ | |
226 static int v3_check_critical(char **value) | |
227 { | |
228 char *p = *value; | |
229 if ((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0; | |
230 p+=9; | |
231 while(isspace((unsigned char)*p)) p++; | |
232 *value = p; | |
233 return 1; | |
234 } | |
235 | |
236 /* Check extension string for generic extension and return the type */ | |
237 static int v3_check_generic(char **value) | |
238 { | |
239 int gen_type = 0; | |
240 char *p = *value; | |
241 if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4)) | |
242 { | |
243 p+=4; | |
244 gen_type = 1; | |
245 } | |
246 else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5)) | |
247 { | |
248 p+=5; | |
249 gen_type = 2; | |
250 } | |
251 else | |
252 return 0; | |
253 | |
254 while (isspace((unsigned char)*p)) p++; | |
255 *value = p; | |
256 return gen_type; | |
257 } | |
258 | |
259 /* Create a generic extension: for now just handle DER type */ | |
260 static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, | |
261 int crit, int gen_type, | |
262 X509V3_CTX *ctx) | |
263 { | |
264 unsigned char *ext_der=NULL; | |
265 long ext_len; | |
266 ASN1_OBJECT *obj=NULL; | |
267 ASN1_OCTET_STRING *oct=NULL; | |
268 X509_EXTENSION *extension=NULL; | |
269 if (!(obj = OBJ_txt2obj(ext, 0))) | |
270 { | |
271 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_
ERROR); | |
272 ERR_add_error_data(2, "name=", ext); | |
273 goto err; | |
274 } | |
275 | |
276 if (gen_type == 1) | |
277 ext_der = string_to_hex(value, &ext_len); | |
278 else if (gen_type == 2) | |
279 ext_der = generic_asn1(value, ctx, &ext_len); | |
280 | |
281 if (ext_der == NULL) | |
282 { | |
283 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE
_ERROR); | |
284 ERR_add_error_data(2, "value=", value); | |
285 goto err; | |
286 } | |
287 | |
288 if (!(oct = M_ASN1_OCTET_STRING_new())) | |
289 { | |
290 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE); | |
291 goto err; | |
292 } | |
293 | |
294 oct->data = ext_der; | |
295 oct->length = ext_len; | |
296 ext_der = NULL; | |
297 | |
298 extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct); | |
299 | |
300 err: | |
301 ASN1_OBJECT_free(obj); | |
302 M_ASN1_OCTET_STRING_free(oct); | |
303 if(ext_der) OPENSSL_free(ext_der); | |
304 return extension; | |
305 | |
306 } | |
307 | |
308 static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len) | |
309 { | |
310 ASN1_TYPE *typ; | |
311 unsigned char *ext_der = NULL; | |
312 typ = ASN1_generate_v3(value, ctx); | |
313 if (typ == NULL) | |
314 return NULL; | |
315 *ext_len = i2d_ASN1_TYPE(typ, &ext_der); | |
316 ASN1_TYPE_free(typ); | |
317 return ext_der; | |
318 } | |
319 | |
320 /* This is the main function: add a bunch of extensions based on a config file | |
321 * section to an extension STACK. | |
322 */ | |
323 | |
324 | |
325 int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section, | |
326 STACK_OF(X509_EXTENSION) **sk) | |
327 { | |
328 X509_EXTENSION *ext; | |
329 STACK_OF(CONF_VALUE) *nval; | |
330 CONF_VALUE *val; | |
331 int i; | |
332 if (!(nval = NCONF_get_section(conf, section))) return 0; | |
333 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) | |
334 { | |
335 val = sk_CONF_VALUE_value(nval, i); | |
336 if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value))) | |
337 return 0; | |
338 if (sk) X509v3_add_ext(sk, ext, -1); | |
339 X509_EXTENSION_free(ext); | |
340 } | |
341 return 1; | |
342 } | |
343 | |
344 /* Convenience functions to add extensions to a certificate, CRL and request */ | |
345 | |
346 int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, | |
347 X509 *cert) | |
348 { | |
349 STACK_OF(X509_EXTENSION) **sk = NULL; | |
350 if (cert) | |
351 sk = &cert->cert_info->extensions; | |
352 return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk); | |
353 } | |
354 | |
355 /* Same as above but for a CRL */ | |
356 | |
357 int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, | |
358 X509_CRL *crl) | |
359 { | |
360 STACK_OF(X509_EXTENSION) **sk = NULL; | |
361 if (crl) | |
362 sk = &crl->crl->extensions; | |
363 return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk); | |
364 } | |
365 | |
366 /* Add extensions to certificate request */ | |
367 | |
368 int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, | |
369 X509_REQ *req) | |
370 { | |
371 STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL; | |
372 int i; | |
373 if (req) | |
374 sk = &extlist; | |
375 i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk); | |
376 if (!i || !sk) | |
377 return i; | |
378 i = X509_REQ_add_extensions(req, extlist); | |
379 sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free); | |
380 return i; | |
381 } | |
382 | |
383 /* Config database functions */ | |
384 | |
385 char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section) | |
386 { | |
387 if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) | |
388 { | |
389 X509V3err(X509V3_F_X509V3_GET_STRING,X509V3_R_OPERATION_NOT_DEFI
NED); | |
390 return NULL; | |
391 } | |
392 if (ctx->db_meth->get_string) | |
393 return ctx->db_meth->get_string(ctx->db, name, section); | |
394 return NULL; | |
395 } | |
396 | |
397 STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section) | |
398 { | |
399 if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) | |
400 { | |
401 X509V3err(X509V3_F_X509V3_GET_SECTION,X509V3_R_OPERATION_NOT_DEF
INED); | |
402 return NULL; | |
403 } | |
404 if (ctx->db_meth->get_section) | |
405 return ctx->db_meth->get_section(ctx->db, section); | |
406 return NULL; | |
407 } | |
408 | |
409 void X509V3_string_free(X509V3_CTX *ctx, char *str) | |
410 { | |
411 if (!str) return; | |
412 if (ctx->db_meth->free_string) | |
413 ctx->db_meth->free_string(ctx->db, str); | |
414 } | |
415 | |
416 void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section) | |
417 { | |
418 if (!section) return; | |
419 if (ctx->db_meth->free_section) | |
420 ctx->db_meth->free_section(ctx->db, section); | |
421 } | |
422 | |
423 static char *nconf_get_string(void *db, char *section, char *value) | |
424 { | |
425 return NCONF_get_string(db, section, value); | |
426 } | |
427 | |
428 static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section) | |
429 { | |
430 return NCONF_get_section(db, section); | |
431 } | |
432 | |
433 static X509V3_CONF_METHOD nconf_method = { | |
434 nconf_get_string, | |
435 nconf_get_section, | |
436 NULL, | |
437 NULL | |
438 }; | |
439 | |
440 void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf) | |
441 { | |
442 ctx->db_meth = &nconf_method; | |
443 ctx->db = conf; | |
444 } | |
445 | |
446 void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req, | |
447 X509_CRL *crl, int flags) | |
448 { | |
449 ctx->issuer_cert = issuer; | |
450 ctx->subject_cert = subj; | |
451 ctx->crl = crl; | |
452 ctx->subject_req = req; | |
453 ctx->flags = flags; | |
454 } | |
455 | |
456 /* Old conf compatibility functions */ | |
457 | |
458 X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, | |
459 char *name, char *value) | |
460 { | |
461 CONF ctmp; | |
462 CONF_set_nconf(&ctmp, conf); | |
463 return X509V3_EXT_nconf(&ctmp, ctx, name, value); | |
464 } | |
465 | |
466 /* LHASH *conf: Config file */ | |
467 /* char *value: Value */ | |
468 X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, | |
469 int ext_nid, char *value) | |
470 { | |
471 CONF ctmp; | |
472 CONF_set_nconf(&ctmp, conf); | |
473 return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value); | |
474 } | |
475 | |
476 static char *conf_lhash_get_string(void *db, char *section, char *value) | |
477 { | |
478 return CONF_get_string(db, section, value); | |
479 } | |
480 | |
481 static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section) | |
482 { | |
483 return CONF_get_section(db, section); | |
484 } | |
485 | |
486 static X509V3_CONF_METHOD conf_lhash_method = { | |
487 conf_lhash_get_string, | |
488 conf_lhash_get_section, | |
489 NULL, | |
490 NULL | |
491 }; | |
492 | |
493 void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash) | |
494 { | |
495 ctx->db_meth = &conf_lhash_method; | |
496 ctx->db = lhash; | |
497 } | |
498 | |
499 int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, | |
500 char *section, X509 *cert) | |
501 { | |
502 CONF ctmp; | |
503 CONF_set_nconf(&ctmp, conf); | |
504 return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert); | |
505 } | |
506 | |
507 /* Same as above but for a CRL */ | |
508 | |
509 int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, | |
510 char *section, X509_CRL *crl) | |
511 { | |
512 CONF ctmp; | |
513 CONF_set_nconf(&ctmp, conf); | |
514 return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl); | |
515 } | |
516 | |
517 /* Add extensions to certificate request */ | |
518 | |
519 int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, | |
520 char *section, X509_REQ *req) | |
521 { | |
522 CONF ctmp; | |
523 CONF_set_nconf(&ctmp, conf); | |
524 return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req); | |
525 } | |
OLD | NEW |