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source: vbox/trunk/src/libs/openssl-3.1.7/crypto/x509/v3_conf.c@ 107278

最後變更 在這個檔案從107278是 104078,由 vboxsync 提交於 11 月 前

openssl-3.1.5: Applied and adjusted our OpenSSL changes to 3.1.4. bugref:10638
檔案大小: 17.0 KB
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1/*
2 * Copyright 1999-2021 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/* extension creation utilities */
11
12#include <stdio.h>
13#include "crypto/ctype.h"
14#include "internal/cryptlib.h"
15#include <openssl/conf.h>
16#include <openssl/x509.h>
17#include "crypto/x509.h"
18#include <openssl/x509v3.h>
19
20static int v3_check_critical(const char **value);
21static int v3_check_generic(const char **value);
22static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
23 int crit, const char *value);
24static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value,
25 int crit, int type,
26 X509V3_CTX *ctx);
27static char *conf_lhash_get_string(void *db, const char *section, const char *value);
28static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, const char *section);
29static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
30 int ext_nid, int crit, void *ext_struc);
31static unsigned char *generic_asn1(const char *value, X509V3_CTX *ctx,
32 long *ext_len);
33
34static X509_EXTENSION *X509V3_EXT_nconf_int(CONF *conf, X509V3_CTX *ctx,
35 const char *section,
36 const char *name, const char *value)
37{
38 int crit;
39 int ext_type;
40 X509_EXTENSION *ret;
41
42 crit = v3_check_critical(&value);
43 if ((ext_type = v3_check_generic(&value)))
44 return v3_generic_extension(name, value, crit, ext_type, ctx);
45 ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
46 if (!ret) {
47 if (section != NULL)
48 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_ERROR_IN_EXTENSION,
49 "section=%s, name=%s, value=%s",
50 section, name, value);
51 else
52 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_ERROR_IN_EXTENSION,
53 "name=%s, value=%s", name, value);
54 }
55 return ret;
56}
57
58X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, const char *name,
59 const char *value)
60{
61 return X509V3_EXT_nconf_int(conf, ctx, NULL, name, value);
62}
63
64X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
65 const char *value)
66{
67 int crit;
68 int ext_type;
69
70 crit = v3_check_critical(&value);
71 if ((ext_type = v3_check_generic(&value)))
72 return v3_generic_extension(OBJ_nid2sn(ext_nid),
73 value, crit, ext_type, ctx);
74 return do_ext_nconf(conf, ctx, ext_nid, crit, value);
75}
76
77/* CONF *conf: Config file */
78/* char *value: Value */
79static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
80 int crit, const char *value)
81{
82 const X509V3_EXT_METHOD *method;
83 X509_EXTENSION *ext;
84 STACK_OF(CONF_VALUE) *nval;
85 void *ext_struc;
86
87 if (ext_nid == NID_undef) {
88 ERR_raise(ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION_NAME);
89 return NULL;
90 }
91 if ((method = X509V3_EXT_get_nid(ext_nid)) == NULL) {
92 ERR_raise(ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION);
93 return NULL;
94 }
95 /* Now get internal extension representation based on type */
96 if (method->v2i) {
97 if (*value == '@')
98 nval = NCONF_get_section(conf, value + 1);
99 else
100 nval = X509V3_parse_list(value);
101 if (nval == NULL || sk_CONF_VALUE_num(nval) <= 0) {
102 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_EXTENSION_STRING,
103 "name=%s,section=%s", OBJ_nid2sn(ext_nid), value);
104 if (*value != '@')
105 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
106 return NULL;
107 }
108 ext_struc = method->v2i(method, ctx, nval);
109 if (*value != '@')
110 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
111 if (!ext_struc)
112 return NULL;
113 } else if (method->s2i) {
114 if ((ext_struc = method->s2i(method, ctx, value)) == NULL)
115 return NULL;
116 } else if (method->r2i) {
117 if (!ctx->db || !ctx->db_meth) {
118 ERR_raise(ERR_LIB_X509V3, X509V3_R_NO_CONFIG_DATABASE);
119 return NULL;
120 }
121 if ((ext_struc = method->r2i(method, ctx, value)) == NULL)
122 return NULL;
123 } else {
124 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED,
125 "name=%s", OBJ_nid2sn(ext_nid));
126 return NULL;
127 }
128
129 ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
130 if (method->it)
131 ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
132 else
133 method->ext_free(ext_struc);
134 return ext;
135
136}
137
138static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
139 int ext_nid, int crit, void *ext_struc)
140{
141 unsigned char *ext_der = NULL;
142 int ext_len;
143 ASN1_OCTET_STRING *ext_oct = NULL;
144 X509_EXTENSION *ext;
145
146 /* Convert internal representation to DER */
147 if (method->it) {
148 ext_der = NULL;
149 ext_len =
150 ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
151 if (ext_len < 0)
152 goto merr;
153 } else {
154 unsigned char *p;
155
156 ext_len = method->i2d(ext_struc, NULL);
157 if (ext_len <= 0)
158 goto merr;
159 if ((ext_der = OPENSSL_malloc(ext_len)) == NULL)
160 goto merr;
161 p = ext_der;
162 method->i2d(ext_struc, &p);
163 }
164 if ((ext_oct = ASN1_OCTET_STRING_new()) == NULL)
165 goto merr;
166 ext_oct->data = ext_der;
167 ext_der = NULL;
168 ext_oct->length = ext_len;
169
170 ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
171 if (!ext)
172 goto merr;
173 ASN1_OCTET_STRING_free(ext_oct);
174
175 return ext;
176
177 merr:
178 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
179 OPENSSL_free(ext_der);
180 ASN1_OCTET_STRING_free(ext_oct);
181 return NULL;
182
183}
184
185/* Given an internal structure, nid and critical flag create an extension */
186
187X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
188{
189 const X509V3_EXT_METHOD *method;
190
191 if ((method = X509V3_EXT_get_nid(ext_nid)) == NULL) {
192 ERR_raise(ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION);
193 return NULL;
194 }
195 return do_ext_i2d(method, ext_nid, crit, ext_struc);
196}
197
198/* Check the extension string for critical flag */
199static int v3_check_critical(const char **value)
200{
201 const char *p = *value;
202
203 if ((strlen(p) < 9) || strncmp(p, "critical,", 9))
204 return 0;
205 p += 9;
206 while (ossl_isspace(*p))
207 p++;
208 *value = p;
209 return 1;
210}
211
212/* Check extension string for generic extension and return the type */
213static int v3_check_generic(const char **value)
214{
215 int gen_type = 0;
216 const char *p = *value;
217
218 if ((strlen(p) >= 4) && strncmp(p, "DER:", 4) == 0) {
219 p += 4;
220 gen_type = 1;
221 } else if ((strlen(p) >= 5) && strncmp(p, "ASN1:", 5) == 0) {
222 p += 5;
223 gen_type = 2;
224 } else
225 return 0;
226
227 while (ossl_isspace(*p))
228 p++;
229 *value = p;
230 return gen_type;
231}
232
233/* Create a generic extension: for now just handle DER type */
234static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value,
235 int crit, int gen_type,
236 X509V3_CTX *ctx)
237{
238 unsigned char *ext_der = NULL;
239 long ext_len = 0;
240 ASN1_OBJECT *obj = NULL;
241 ASN1_OCTET_STRING *oct = NULL;
242 X509_EXTENSION *extension = NULL;
243
244 if ((obj = OBJ_txt2obj(ext, 0)) == NULL) {
245 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_EXTENSION_NAME_ERROR,
246 "name=%s", ext);
247 goto err;
248 }
249
250 if (gen_type == 1)
251 ext_der = OPENSSL_hexstr2buf(value, &ext_len);
252 else if (gen_type == 2)
253 ext_der = generic_asn1(value, ctx, &ext_len);
254
255 if (ext_der == NULL) {
256 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_EXTENSION_VALUE_ERROR,
257 "value=%s", value);
258 goto err;
259 }
260
261 if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
262 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
263 goto err;
264 }
265
266 oct->data = ext_der;
267 oct->length = ext_len;
268 ext_der = NULL;
269
270 extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
271
272 err:
273 ASN1_OBJECT_free(obj);
274 ASN1_OCTET_STRING_free(oct);
275 OPENSSL_free(ext_der);
276 return extension;
277
278}
279
280static unsigned char *generic_asn1(const char *value, X509V3_CTX *ctx,
281 long *ext_len)
282{
283 ASN1_TYPE *typ;
284 unsigned char *ext_der = NULL;
285
286 typ = ASN1_generate_v3(value, ctx);
287 if (typ == NULL)
288 return NULL;
289 *ext_len = i2d_ASN1_TYPE(typ, &ext_der);
290 ASN1_TYPE_free(typ);
291 return ext_der;
292}
293
294static void delete_ext(STACK_OF(X509_EXTENSION) *sk, X509_EXTENSION *dext)
295{
296 int idx;
297 ASN1_OBJECT *obj;
298
299 obj = X509_EXTENSION_get_object(dext);
300 while ((idx = X509v3_get_ext_by_OBJ(sk, obj, -1)) >= 0)
301 X509_EXTENSION_free(X509v3_delete_ext(sk, idx));
302}
303
304/*
305 * This is the main function: add a bunch of extensions based on a config
306 * file section to an extension STACK. Just check in case sk == NULL.
307 * Note that on error new elements may have been added to *sk if sk != NULL.
308 */
309int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, const char *section,
310 STACK_OF(X509_EXTENSION) **sk)
311{
312 X509_EXTENSION *ext;
313 STACK_OF(CONF_VALUE) *nval;
314 CONF_VALUE *val;
315 int i;
316
317 if ((nval = NCONF_get_section(conf, section)) == NULL)
318 return 0;
319 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
320 val = sk_CONF_VALUE_value(nval, i);
321 if ((ext = X509V3_EXT_nconf_int(conf, ctx, val->section,
322 val->name, val->value)) == NULL)
323 return 0;
324 if (sk != NULL) {
325 if (ctx->flags == X509V3_CTX_REPLACE)
326 delete_ext(*sk, ext);
327 if (X509v3_add_ext(sk, ext, -1) == NULL) {
328 X509_EXTENSION_free(ext);
329 return 0;
330 }
331 }
332 X509_EXTENSION_free(ext);
333 }
334 return 1;
335}
336
337/*
338 * Add extensions to a certificate. Just check in case cert == NULL.
339 * Note that on error new elements may remain added to cert if cert != NULL.
340 */
341int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section,
342 X509 *cert)
343{
344 STACK_OF(X509_EXTENSION) **sk = NULL;
345 if (cert != NULL)
346 sk = &cert->cert_info.extensions;
347 return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
348}
349
350/*
351 * Add extensions to a CRL. Just check in case crl == NULL.
352 * Note that on error new elements may remain added to crl if crl != NULL.
353 */
354int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section,
355 X509_CRL *crl)
356{
357 STACK_OF(X509_EXTENSION) **sk = NULL;
358 if (crl != NULL)
359 sk = &crl->crl.extensions;
360 return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
361}
362
363/*
364 * Add extensions to certificate request. Just check in case req is NULL.
365 * Note that on error new elements may remain added to req if req != NULL.
366 */
367int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section,
368 X509_REQ *req)
369{
370 STACK_OF(X509_EXTENSION) *exts = NULL;
371 int ret = X509V3_EXT_add_nconf_sk(conf, ctx, section, &exts);
372
373 if (ret && req != NULL && exts != NULL)
374 ret = X509_REQ_add_extensions(req, exts);
375 sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
376 return ret;
377}
378
379/* Config database functions */
380
381char *X509V3_get_string(X509V3_CTX *ctx, const char *name, const char *section)
382{
383 if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) {
384 ERR_raise(ERR_LIB_X509V3, X509V3_R_OPERATION_NOT_DEFINED);
385 return NULL;
386 }
387 if (ctx->db_meth->get_string)
388 return ctx->db_meth->get_string(ctx->db, name, section);
389 return NULL;
390}
391
392STACK_OF(CONF_VALUE) *X509V3_get_section(X509V3_CTX *ctx, const char *section)
393{
394 if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) {
395 ERR_raise(ERR_LIB_X509V3, X509V3_R_OPERATION_NOT_DEFINED);
396 return NULL;
397 }
398 if (ctx->db_meth->get_section)
399 return ctx->db_meth->get_section(ctx->db, section);
400 return NULL;
401}
402
403void X509V3_string_free(X509V3_CTX *ctx, char *str)
404{
405 if (!str)
406 return;
407 if (ctx->db_meth->free_string)
408 ctx->db_meth->free_string(ctx->db, str);
409}
410
411void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
412{
413 if (!section)
414 return;
415 if (ctx->db_meth->free_section)
416 ctx->db_meth->free_section(ctx->db, section);
417}
418
419static char *nconf_get_string(void *db, const char *section, const char *value)
420{
421 return NCONF_get_string(db, section, value);
422}
423
424static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, const char *section)
425{
426 return NCONF_get_section(db, section);
427}
428
429static X509V3_CONF_METHOD nconf_method = {
430 nconf_get_string,
431 nconf_get_section,
432 NULL,
433 NULL
434};
435
436void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
437{
438 if (ctx == NULL) {
439 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
440 return;
441 }
442 ctx->db_meth = &nconf_method;
443 ctx->db = conf;
444}
445
446void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
447 X509_CRL *crl, int flags)
448{
449 if (ctx == NULL) {
450 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
451 return;
452 }
453 ctx->flags = flags;
454 ctx->issuer_cert = issuer;
455 ctx->subject_cert = subj;
456 ctx->subject_req = req;
457 ctx->crl = crl;
458 ctx->db_meth = NULL;
459 ctx->db = NULL;
460 ctx->issuer_pkey = NULL;
461}
462
463/* For API backward compatibility, this is separate from X509V3_set_ctx() */
464int X509V3_set_issuer_pkey(X509V3_CTX *ctx, EVP_PKEY *pkey)
465{
466 if (ctx == NULL) {
467 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
468 return 0;
469 }
470 if (ctx->subject_cert == NULL && pkey != NULL) {
471 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_INVALID_ARGUMENT);
472 return 0;
473 }
474 ctx->issuer_pkey = pkey;
475 return 1;
476}
477
478/* Old conf compatibility functions */
479
480X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
481 const char *name, const char *value)
482{
483 CONF *ctmp;
484 X509_EXTENSION *ret;
485
486 if ((ctmp = NCONF_new(NULL)) == NULL)
487 return NULL;
488 CONF_set_nconf(ctmp, conf);
489 ret = X509V3_EXT_nconf(ctmp, ctx, name, value);
490 CONF_set_nconf(ctmp, NULL);
491 NCONF_free(ctmp);
492 return ret;
493}
494
495X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf,
496 X509V3_CTX *ctx, int ext_nid, const char *value)
497{
498 CONF *ctmp;
499 X509_EXTENSION *ret;
500
501 if ((ctmp = NCONF_new(NULL)) == NULL)
502 return NULL;
503 CONF_set_nconf(ctmp, conf);
504 ret = X509V3_EXT_nconf_nid(ctmp, ctx, ext_nid, value);
505 CONF_set_nconf(ctmp, NULL);
506 NCONF_free(ctmp);
507 return ret;
508}
509
510static char *conf_lhash_get_string(void *db, const char *section, const char *value)
511{
512 return CONF_get_string(db, section, value);
513}
514
515static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, const char *section)
516{
517 return CONF_get_section(db, section);
518}
519
520static X509V3_CONF_METHOD conf_lhash_method = {
521 conf_lhash_get_string,
522 conf_lhash_get_section,
523 NULL,
524 NULL
525};
526
527void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash)
528{
529 if (ctx == NULL) {
530 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
531 return;
532 }
533 ctx->db_meth = &conf_lhash_method;
534 ctx->db = lhash;
535}
536
537int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
538 const char *section, X509 *cert)
539{
540 CONF *ctmp;
541 int ret;
542
543 if ((ctmp = NCONF_new(NULL)) == NULL)
544 return 0;
545 CONF_set_nconf(ctmp, conf);
546 ret = X509V3_EXT_add_nconf(ctmp, ctx, section, cert);
547 CONF_set_nconf(ctmp, NULL);
548 NCONF_free(ctmp);
549 return ret;
550}
551
552/* Same as above but for a CRL */
553
554int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
555 const char *section, X509_CRL *crl)
556{
557 CONF *ctmp;
558 int ret;
559
560 if ((ctmp = NCONF_new(NULL)) == NULL)
561 return 0;
562 CONF_set_nconf(ctmp, conf);
563 ret = X509V3_EXT_CRL_add_nconf(ctmp, ctx, section, crl);
564 CONF_set_nconf(ctmp, NULL);
565 NCONF_free(ctmp);
566 return ret;
567}
568
569/* Add extensions to certificate request */
570
571int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
572 const char *section, X509_REQ *req)
573{
574 CONF *ctmp;
575 int ret;
576
577 if ((ctmp = NCONF_new(NULL)) == NULL)
578 return 0;
579 CONF_set_nconf(ctmp, conf);
580 ret = X509V3_EXT_REQ_add_nconf(ctmp, ctx, section, req);
581 CONF_set_nconf(ctmp, NULL);
582 NCONF_free(ctmp);
583 return ret;
584}
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