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1 | /* | |
2 | * ! \file ssl/ssl_cert.c | |
3 | */ | |
4 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
5 | * All rights reserved. | |
6 | * | |
7 | * This package is an SSL implementation written | |
8 | * by Eric Young (eay@cryptsoft.com). | |
9 | * The implementation was written so as to conform with Netscapes SSL. | |
10 | * | |
11 | * This library is free for commercial and non-commercial use as long as | |
12 | * the following conditions are aheared to. The following conditions | |
13 | * apply to all code found in this distribution, be it the RC4, RSA, | |
14 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
15 | * included with this distribution is covered by the same copyright terms | |
16 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
17 | * | |
18 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
19 | * the code are not to be removed. | |
20 | * If this package is used in a product, Eric Young should be given attribution | |
21 | * as the author of the parts of the library used. | |
22 | * This can be in the form of a textual message at program startup or | |
23 | * in documentation (online or textual) provided with the package. | |
24 | * | |
25 | * Redistribution and use in source and binary forms, with or without | |
26 | * modification, are permitted provided that the following conditions | |
27 | * are met: | |
28 | * 1. Redistributions of source code must retain the copyright | |
29 | * notice, this list of conditions and the following disclaimer. | |
30 | * 2. Redistributions in binary form must reproduce the above copyright | |
31 | * notice, this list of conditions and the following disclaimer in the | |
32 | * documentation and/or other materials provided with the distribution. | |
33 | * 3. All advertising materials mentioning features or use of this software | |
34 | * must display the following acknowledgement: | |
35 | * "This product includes cryptographic software written by | |
36 | * Eric Young (eay@cryptsoft.com)" | |
37 | * The word 'cryptographic' can be left out if the rouines from the library | |
38 | * being used are not cryptographic related :-). | |
39 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
40 | * the apps directory (application code) you must include an acknowledgement: | |
41 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
42 | * | |
43 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
44 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
45 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
46 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
47 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
48 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
49 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
50 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
51 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
52 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
53 | * SUCH DAMAGE. | |
54 | * | |
55 | * The licence and distribution terms for any publically available version or | |
56 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
57 | * copied and put under another distribution licence | |
58 | * [including the GNU Public Licence.] | |
59 | */ | |
60 | /* ==================================================================== | |
61 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. | |
62 | * | |
63 | * Redistribution and use in source and binary forms, with or without | |
64 | * modification, are permitted provided that the following conditions | |
65 | * are met: | |
66 | * | |
67 | * 1. Redistributions of source code must retain the above copyright | |
68 | * notice, this list of conditions and the following disclaimer. | |
69 | * | |
70 | * 2. Redistributions in binary form must reproduce the above copyright | |
71 | * notice, this list of conditions and the following disclaimer in | |
72 | * the documentation and/or other materials provided with the | |
73 | * distribution. | |
74 | * | |
75 | * 3. All advertising materials mentioning features or use of this | |
76 | * software must display the following acknowledgment: | |
77 | * "This product includes software developed by the OpenSSL Project | |
78 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
79 | * | |
80 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
81 | * endorse or promote products derived from this software without | |
82 | * prior written permission. For written permission, please contact | |
83 | * openssl-core@openssl.org. | |
84 | * | |
85 | * 5. Products derived from this software may not be called "OpenSSL" | |
86 | * nor may "OpenSSL" appear in their names without prior written | |
87 | * permission of the OpenSSL Project. | |
88 | * | |
89 | * 6. Redistributions of any form whatsoever must retain the following | |
90 | * acknowledgment: | |
91 | * "This product includes software developed by the OpenSSL Project | |
92 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
93 | * | |
94 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
95 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
96 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
97 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
98 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
99 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
100 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
101 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
102 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
103 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
104 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
105 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
106 | * ==================================================================== | |
107 | * | |
108 | * This product includes cryptographic software written by Eric Young | |
109 | * (eay@cryptsoft.com). This product includes software written by Tim | |
110 | * Hudson (tjh@cryptsoft.com). | |
111 | * | |
112 | */ | |
113 | /* ==================================================================== | |
114 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
115 | * ECC cipher suite support in OpenSSL originally developed by | |
116 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
117 | */ | |
118 | ||
119 | #include <stdio.h> | |
120 | ||
121 | #include "e_os.h" | |
122 | #ifndef NO_SYS_TYPES_H | |
123 | # include <sys/types.h> | |
124 | #endif | |
125 | ||
126 | #include "internal/o_dir.h" | |
127 | #include <openssl/objects.h> | |
128 | #include <openssl/bio.h> | |
129 | #include <openssl/pem.h> | |
130 | #include <openssl/x509v3.h> | |
131 | #ifndef OPENSSL_NO_DH | |
132 | # include <openssl/dh.h> | |
133 | #endif | |
134 | #include <openssl/bn.h> | |
135 | #include "ssl_locl.h" | |
136 | ||
137 | static int ssl_security_default_callback(SSL *s, SSL_CTX *ctx, int op, | |
138 | int bits, int nid, void *other, | |
139 | void *ex); | |
140 | ||
141 | int SSL_get_ex_data_X509_STORE_CTX_idx(void) | |
142 | { | |
143 | static volatile int ssl_x509_store_ctx_idx = -1; | |
144 | int got_write_lock = 0; | |
145 | ||
146 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); | |
147 | ||
148 | if (ssl_x509_store_ctx_idx < 0) { | |
149 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
150 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
151 | got_write_lock = 1; | |
152 | ||
153 | if (ssl_x509_store_ctx_idx < 0) { | |
154 | ssl_x509_store_ctx_idx = | |
155 | X509_STORE_CTX_get_ex_new_index(0, "SSL for verify callback", | |
156 | NULL, NULL, NULL); | |
157 | } | |
158 | } | |
159 | ||
160 | if (got_write_lock) | |
161 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
162 | else | |
163 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
164 | ||
165 | return ssl_x509_store_ctx_idx; | |
166 | } | |
167 | ||
168 | CERT *ssl_cert_new(void) | |
169 | { | |
170 | CERT *ret = OPENSSL_malloc(sizeof(*ret)); | |
171 | ||
172 | if (ret == NULL) { | |
173 | SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE); | |
174 | return (NULL); | |
175 | } | |
176 | memset(ret, 0, sizeof(*ret)); | |
177 | ||
178 | ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]); | |
179 | ret->references = 1; | |
180 | ret->sec_cb = ssl_security_default_callback; | |
181 | ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL; | |
182 | ret->sec_ex = NULL; | |
183 | return (ret); | |
184 | } | |
185 | ||
186 | CERT *ssl_cert_dup(CERT *cert) | |
187 | { | |
188 | CERT *ret = OPENSSL_malloc(sizeof(*ret)); | |
189 | int i; | |
190 | ||
191 | if (ret == NULL) { | |
192 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); | |
193 | return (NULL); | |
194 | } | |
195 | ||
196 | memset(ret, 0, sizeof(*ret)); | |
197 | ||
198 | ret->key = &ret->pkeys[cert->key - cert->pkeys]; | |
199 | ||
200 | #ifndef OPENSSL_NO_RSA | |
201 | if (cert->rsa_tmp != NULL) { | |
202 | RSA_up_ref(cert->rsa_tmp); | |
203 | ret->rsa_tmp = cert->rsa_tmp; | |
204 | } | |
205 | ret->rsa_tmp_cb = cert->rsa_tmp_cb; | |
206 | #endif | |
207 | ||
208 | #ifndef OPENSSL_NO_DH | |
209 | if (cert->dh_tmp != NULL) { | |
210 | ret->dh_tmp = DHparams_dup(cert->dh_tmp); | |
211 | if (ret->dh_tmp == NULL) { | |
212 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB); | |
213 | goto err; | |
214 | } | |
215 | if (cert->dh_tmp->priv_key) { | |
216 | BIGNUM *b = BN_dup(cert->dh_tmp->priv_key); | |
217 | if (!b) { | |
218 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); | |
219 | goto err; | |
220 | } | |
221 | ret->dh_tmp->priv_key = b; | |
222 | } | |
223 | if (cert->dh_tmp->pub_key) { | |
224 | BIGNUM *b = BN_dup(cert->dh_tmp->pub_key); | |
225 | if (!b) { | |
226 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB); | |
227 | goto err; | |
228 | } | |
229 | ret->dh_tmp->pub_key = b; | |
230 | } | |
231 | } | |
232 | ret->dh_tmp_cb = cert->dh_tmp_cb; | |
233 | ret->dh_tmp_auto = cert->dh_tmp_auto; | |
234 | #endif | |
235 | ||
236 | #ifndef OPENSSL_NO_EC | |
237 | if (cert->ecdh_tmp) { | |
238 | ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp); | |
239 | if (ret->ecdh_tmp == NULL) { | |
240 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB); | |
241 | goto err; | |
242 | } | |
243 | } | |
244 | ret->ecdh_tmp_cb = cert->ecdh_tmp_cb; | |
245 | ret->ecdh_tmp_auto = cert->ecdh_tmp_auto; | |
246 | #endif | |
247 | ||
248 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
249 | CERT_PKEY *cpk = cert->pkeys + i; | |
250 | CERT_PKEY *rpk = ret->pkeys + i; | |
251 | if (cpk->x509 != NULL) { | |
252 | rpk->x509 = cpk->x509; | |
253 | X509_up_ref(rpk->x509); | |
254 | } | |
255 | ||
256 | if (cpk->privatekey != NULL) { | |
257 | rpk->privatekey = cpk->privatekey; | |
258 | CRYPTO_add(&cpk->privatekey->references, 1, CRYPTO_LOCK_EVP_PKEY); | |
259 | } | |
260 | ||
261 | if (cpk->chain) { | |
262 | rpk->chain = X509_chain_up_ref(cpk->chain); | |
263 | if (!rpk->chain) { | |
264 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); | |
265 | goto err; | |
266 | } | |
267 | } | |
268 | if (cert->pkeys[i].serverinfo != NULL) { | |
269 | /* Just copy everything. */ | |
270 | ret->pkeys[i].serverinfo = | |
271 | OPENSSL_malloc(cert->pkeys[i].serverinfo_length); | |
272 | if (ret->pkeys[i].serverinfo == NULL) { | |
273 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); | |
274 | goto err; | |
275 | } | |
276 | ret->pkeys[i].serverinfo_length = | |
277 | cert->pkeys[i].serverinfo_length; | |
278 | memcpy(ret->pkeys[i].serverinfo, | |
279 | cert->pkeys[i].serverinfo, | |
280 | cert->pkeys[i].serverinfo_length); | |
281 | } | |
282 | } | |
283 | ||
284 | ret->references = 1; | |
285 | /* Configured sigalgs copied across */ | |
286 | if (cert->conf_sigalgs) { | |
287 | ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen); | |
288 | if (!ret->conf_sigalgs) | |
289 | goto err; | |
290 | memcpy(ret->conf_sigalgs, cert->conf_sigalgs, cert->conf_sigalgslen); | |
291 | ret->conf_sigalgslen = cert->conf_sigalgslen; | |
292 | } else | |
293 | ret->conf_sigalgs = NULL; | |
294 | ||
295 | if (cert->client_sigalgs) { | |
296 | ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen); | |
297 | if (!ret->client_sigalgs) | |
298 | goto err; | |
299 | memcpy(ret->client_sigalgs, cert->client_sigalgs, | |
300 | cert->client_sigalgslen); | |
301 | ret->client_sigalgslen = cert->client_sigalgslen; | |
302 | } else | |
303 | ret->client_sigalgs = NULL; | |
304 | /* Shared sigalgs also NULL */ | |
305 | ret->shared_sigalgs = NULL; | |
306 | /* Copy any custom client certificate types */ | |
307 | if (cert->ctypes) { | |
308 | ret->ctypes = OPENSSL_malloc(cert->ctype_num); | |
309 | if (!ret->ctypes) | |
310 | goto err; | |
311 | memcpy(ret->ctypes, cert->ctypes, cert->ctype_num); | |
312 | ret->ctype_num = cert->ctype_num; | |
313 | } | |
314 | ||
315 | ret->cert_flags = cert->cert_flags; | |
316 | ||
317 | ret->cert_cb = cert->cert_cb; | |
318 | ret->cert_cb_arg = cert->cert_cb_arg; | |
319 | ||
320 | if (cert->verify_store) { | |
321 | CRYPTO_add(&cert->verify_store->references, 1, | |
322 | CRYPTO_LOCK_X509_STORE); | |
323 | ret->verify_store = cert->verify_store; | |
324 | } | |
325 | ||
326 | if (cert->chain_store) { | |
327 | CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE); | |
328 | ret->chain_store = cert->chain_store; | |
329 | } | |
330 | ||
331 | ret->sec_cb = cert->sec_cb; | |
332 | ret->sec_level = cert->sec_level; | |
333 | ret->sec_ex = cert->sec_ex; | |
334 | ||
335 | if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext)) | |
336 | goto err; | |
337 | if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext)) | |
338 | goto err; | |
339 | ||
340 | return (ret); | |
341 | ||
342 | err: | |
343 | ssl_cert_free(ret); | |
344 | ||
345 | return NULL; | |
346 | } | |
347 | ||
348 | /* Free up and clear all certificates and chains */ | |
349 | ||
350 | void ssl_cert_clear_certs(CERT *c) | |
351 | { | |
352 | int i; | |
353 | if (c == NULL) | |
354 | return; | |
355 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
356 | CERT_PKEY *cpk = c->pkeys + i; | |
357 | X509_free(cpk->x509); | |
358 | cpk->x509 = NULL; | |
359 | EVP_PKEY_free(cpk->privatekey); | |
360 | cpk->privatekey = NULL; | |
361 | sk_X509_pop_free(cpk->chain, X509_free); | |
362 | cpk->chain = NULL; | |
363 | OPENSSL_free(cpk->serverinfo); | |
364 | cpk->serverinfo = NULL; | |
365 | cpk->serverinfo_length = 0; | |
366 | } | |
367 | } | |
368 | ||
369 | void ssl_cert_free(CERT *c) | |
370 | { | |
371 | int i; | |
372 | ||
373 | if (c == NULL) | |
374 | return; | |
375 | ||
376 | i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT); | |
377 | #ifdef REF_PRINT | |
378 | REF_PRINT("CERT", c); | |
379 | #endif | |
380 | if (i > 0) | |
381 | return; | |
382 | #ifdef REF_CHECK | |
383 | if (i < 0) { | |
384 | fprintf(stderr, "ssl_cert_free, bad reference count\n"); | |
385 | abort(); /* ok */ | |
386 | } | |
387 | #endif | |
388 | ||
389 | #ifndef OPENSSL_NO_RSA | |
390 | RSA_free(c->rsa_tmp); | |
391 | #endif | |
392 | #ifndef OPENSSL_NO_DH | |
393 | DH_free(c->dh_tmp); | |
394 | #endif | |
395 | #ifndef OPENSSL_NO_EC | |
396 | EC_KEY_free(c->ecdh_tmp); | |
397 | #endif | |
398 | ||
399 | ssl_cert_clear_certs(c); | |
400 | OPENSSL_free(c->conf_sigalgs); | |
401 | OPENSSL_free(c->client_sigalgs); | |
402 | OPENSSL_free(c->shared_sigalgs); | |
403 | OPENSSL_free(c->ctypes); | |
404 | X509_STORE_free(c->verify_store); | |
405 | X509_STORE_free(c->chain_store); | |
406 | custom_exts_free(&c->cli_ext); | |
407 | custom_exts_free(&c->srv_ext); | |
408 | OPENSSL_free(c); | |
409 | } | |
410 | ||
411 | int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain) | |
412 | { | |
413 | int i, r; | |
414 | CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key; | |
415 | if (!cpk) | |
416 | return 0; | |
417 | sk_X509_pop_free(cpk->chain, X509_free); | |
418 | for (i = 0; i < sk_X509_num(chain); i++) { | |
419 | r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0); | |
420 | if (r != 1) { | |
421 | SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r); | |
422 | return 0; | |
423 | } | |
424 | } | |
425 | cpk->chain = chain; | |
426 | return 1; | |
427 | } | |
428 | ||
429 | int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain) | |
430 | { | |
431 | STACK_OF(X509) *dchain; | |
432 | if (!chain) | |
433 | return ssl_cert_set0_chain(s, ctx, NULL); | |
434 | dchain = X509_chain_up_ref(chain); | |
435 | if (!dchain) | |
436 | return 0; | |
437 | if (!ssl_cert_set0_chain(s, ctx, dchain)) { | |
438 | sk_X509_pop_free(dchain, X509_free); | |
439 | return 0; | |
440 | } | |
441 | return 1; | |
442 | } | |
443 | ||
444 | int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x) | |
445 | { | |
446 | int r; | |
447 | CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key; | |
448 | if (!cpk) | |
449 | return 0; | |
450 | r = ssl_security_cert(s, ctx, x, 0, 0); | |
451 | if (r != 1) { | |
452 | SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r); | |
453 | return 0; | |
454 | } | |
455 | if (!cpk->chain) | |
456 | cpk->chain = sk_X509_new_null(); | |
457 | if (!cpk->chain || !sk_X509_push(cpk->chain, x)) | |
458 | return 0; | |
459 | return 1; | |
460 | } | |
461 | ||
462 | int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x) | |
463 | { | |
464 | if (!ssl_cert_add0_chain_cert(s, ctx, x)) | |
465 | return 0; | |
466 | X509_up_ref(x); | |
467 | return 1; | |
468 | } | |
469 | ||
470 | int ssl_cert_select_current(CERT *c, X509 *x) | |
471 | { | |
472 | int i; | |
473 | if (x == NULL) | |
474 | return 0; | |
475 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
476 | CERT_PKEY *cpk = c->pkeys + i; | |
477 | if (cpk->x509 == x && cpk->privatekey) { | |
478 | c->key = cpk; | |
479 | return 1; | |
480 | } | |
481 | } | |
482 | ||
483 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
484 | CERT_PKEY *cpk = c->pkeys + i; | |
485 | if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) { | |
486 | c->key = cpk; | |
487 | return 1; | |
488 | } | |
489 | } | |
490 | return 0; | |
491 | } | |
492 | ||
493 | int ssl_cert_set_current(CERT *c, long op) | |
494 | { | |
495 | int i, idx; | |
496 | if (!c) | |
497 | return 0; | |
498 | if (op == SSL_CERT_SET_FIRST) | |
499 | idx = 0; | |
500 | else if (op == SSL_CERT_SET_NEXT) { | |
501 | idx = (int)(c->key - c->pkeys + 1); | |
502 | if (idx >= SSL_PKEY_NUM) | |
503 | return 0; | |
504 | } else | |
505 | return 0; | |
506 | for (i = idx; i < SSL_PKEY_NUM; i++) { | |
507 | CERT_PKEY *cpk = c->pkeys + i; | |
508 | if (cpk->x509 && cpk->privatekey) { | |
509 | c->key = cpk; | |
510 | return 1; | |
511 | } | |
512 | } | |
513 | return 0; | |
514 | } | |
515 | ||
516 | void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg) | |
517 | { | |
518 | c->cert_cb = cb; | |
519 | c->cert_cb_arg = arg; | |
520 | } | |
521 | ||
522 | int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) | |
523 | { | |
524 | X509 *x; | |
525 | int i; | |
526 | X509_STORE *verify_store; | |
527 | X509_STORE_CTX ctx; | |
528 | ||
529 | if (s->cert->verify_store) | |
530 | verify_store = s->cert->verify_store; | |
531 | else | |
532 | verify_store = s->ctx->cert_store; | |
533 | ||
534 | if ((sk == NULL) || (sk_X509_num(sk) == 0)) | |
535 | return (0); | |
536 | ||
537 | x = sk_X509_value(sk, 0); | |
538 | if (!X509_STORE_CTX_init(&ctx, verify_store, x, sk)) { | |
539 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB); | |
540 | return (0); | |
541 | } | |
542 | /* Set suite B flags if needed */ | |
543 | X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s)); | |
544 | X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); | |
545 | ||
546 | /* | |
547 | * We need to inherit the verify parameters. These can be determined by | |
548 | * the context: if its a server it will verify SSL client certificates or | |
549 | * vice versa. | |
550 | */ | |
551 | ||
552 | X509_STORE_CTX_set_default(&ctx, s->server ? "ssl_client" : "ssl_server"); | |
553 | /* | |
554 | * Anything non-default in "param" should overwrite anything in the ctx. | |
555 | */ | |
556 | X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param); | |
557 | ||
558 | if (s->verify_callback) | |
559 | X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); | |
560 | ||
561 | if (s->ctx->app_verify_callback != NULL) | |
562 | i = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); | |
563 | else { | |
564 | i = X509_verify_cert(&ctx); | |
565 | # if 0 | |
566 | /* Dummy error calls so mkerr generates them */ | |
567 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_EE_KEY_TOO_SMALL); | |
568 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_CA_KEY_TOO_SMALL); | |
569 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_CA_MD_TOO_WEAK); | |
570 | # endif | |
571 | if (i > 0) | |
572 | i = ssl_security_cert_chain(s, ctx.chain, NULL, 1); | |
573 | } | |
574 | ||
575 | s->verify_result = ctx.error; | |
576 | X509_STORE_CTX_cleanup(&ctx); | |
577 | ||
578 | return (i); | |
579 | } | |
580 | ||
581 | static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list, | |
582 | STACK_OF(X509_NAME) *name_list) | |
583 | { | |
584 | sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); | |
585 | *ca_list = name_list; | |
586 | } | |
587 | ||
588 | STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) | |
589 | { | |
590 | int i; | |
591 | STACK_OF(X509_NAME) *ret; | |
592 | X509_NAME *name; | |
593 | ||
594 | ret = sk_X509_NAME_new_null(); | |
595 | for (i = 0; i < sk_X509_NAME_num(sk); i++) { | |
596 | name = X509_NAME_dup(sk_X509_NAME_value(sk, i)); | |
597 | if ((name == NULL) || !sk_X509_NAME_push(ret, name)) { | |
598 | sk_X509_NAME_pop_free(ret, X509_NAME_free); | |
599 | return (NULL); | |
600 | } | |
601 | } | |
602 | return (ret); | |
603 | } | |
604 | ||
605 | void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) | |
606 | { | |
607 | set_client_CA_list(&(s->client_CA), name_list); | |
608 | } | |
609 | ||
610 | void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) | |
611 | { | |
612 | set_client_CA_list(&(ctx->client_CA), name_list); | |
613 | } | |
614 | ||
615 | STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) | |
616 | { | |
617 | return (ctx->client_CA); | |
618 | } | |
619 | ||
620 | STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) | |
621 | { | |
622 | if (s->type == SSL_ST_CONNECT) { /* we are in the client */ | |
623 | if (((s->version >> 8) == SSL3_VERSION_MAJOR) && (s->s3 != NULL)) | |
624 | return (s->s3->tmp.ca_names); | |
625 | else | |
626 | return (NULL); | |
627 | } else { | |
628 | if (s->client_CA != NULL) | |
629 | return (s->client_CA); | |
630 | else | |
631 | return (s->ctx->client_CA); | |
632 | } | |
633 | } | |
634 | ||
635 | static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) | |
636 | { | |
637 | X509_NAME *name; | |
638 | ||
639 | if (x == NULL) | |
640 | return (0); | |
641 | if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) | |
642 | return (0); | |
643 | ||
644 | if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) | |
645 | return (0); | |
646 | ||
647 | if (!sk_X509_NAME_push(*sk, name)) { | |
648 | X509_NAME_free(name); | |
649 | return (0); | |
650 | } | |
651 | return (1); | |
652 | } | |
653 | ||
654 | int SSL_add_client_CA(SSL *ssl, X509 *x) | |
655 | { | |
656 | return (add_client_CA(&(ssl->client_CA), x)); | |
657 | } | |
658 | ||
659 | int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) | |
660 | { | |
661 | return (add_client_CA(&(ctx->client_CA), x)); | |
662 | } | |
663 | ||
664 | static int xname_cmp(const X509_NAME *const *a, const X509_NAME *const *b) | |
665 | { | |
666 | return (X509_NAME_cmp(*a, *b)); | |
667 | } | |
668 | ||
669 | #ifndef OPENSSL_NO_STDIO | |
670 | /** | |
671 | * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; | |
672 | * it doesn't really have anything to do with clients (except that a common use | |
673 | * for a stack of CAs is to send it to the client). Actually, it doesn't have | |
674 | * much to do with CAs, either, since it will load any old cert. | |
675 | * \param file the file containing one or more certs. | |
676 | * \return a ::STACK containing the certs. | |
677 | */ | |
678 | STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) | |
679 | { | |
680 | BIO *in; | |
681 | X509 *x = NULL; | |
682 | X509_NAME *xn = NULL; | |
683 | STACK_OF(X509_NAME) *ret = NULL, *sk; | |
684 | ||
685 | sk = sk_X509_NAME_new(xname_cmp); | |
686 | ||
687 | in = BIO_new(BIO_s_file_internal()); | |
688 | ||
689 | if ((sk == NULL) || (in == NULL)) { | |
690 | SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); | |
691 | goto err; | |
692 | } | |
693 | ||
694 | if (!BIO_read_filename(in, file)) | |
695 | goto err; | |
696 | ||
697 | for (;;) { | |
698 | if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) | |
699 | break; | |
700 | if (ret == NULL) { | |
701 | ret = sk_X509_NAME_new_null(); | |
702 | if (ret == NULL) { | |
703 | SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); | |
704 | goto err; | |
705 | } | |
706 | } | |
707 | if ((xn = X509_get_subject_name(x)) == NULL) | |
708 | goto err; | |
709 | /* check for duplicates */ | |
710 | xn = X509_NAME_dup(xn); | |
711 | if (xn == NULL) | |
712 | goto err; | |
713 | if (sk_X509_NAME_find(sk, xn) >= 0) | |
714 | X509_NAME_free(xn); | |
715 | else { | |
716 | sk_X509_NAME_push(sk, xn); | |
717 | sk_X509_NAME_push(ret, xn); | |
718 | } | |
719 | } | |
720 | goto done; | |
721 | ||
722 | err: | |
723 | sk_X509_NAME_pop_free(ret, X509_NAME_free); | |
724 | ret = NULL; | |
725 | done: | |
726 | sk_X509_NAME_free(sk); | |
727 | BIO_free(in); | |
728 | X509_free(x); | |
729 | if (ret != NULL) | |
730 | ERR_clear_error(); | |
731 | return (ret); | |
732 | } | |
733 | #endif | |
734 | ||
735 | /** | |
736 | * Add a file of certs to a stack. | |
737 | * \param stack the stack to add to. | |
738 | * \param file the file to add from. All certs in this file that are not | |
739 | * already in the stack will be added. | |
740 | * \return 1 for success, 0 for failure. Note that in the case of failure some | |
741 | * certs may have been added to \c stack. | |
742 | */ | |
743 | ||
744 | int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, | |
745 | const char *file) | |
746 | { | |
747 | BIO *in; | |
748 | X509 *x = NULL; | |
749 | X509_NAME *xn = NULL; | |
750 | int ret = 1; | |
751 | int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b); | |
752 | ||
753 | oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp); | |
754 | ||
755 | in = BIO_new(BIO_s_file_internal()); | |
756 | ||
757 | if (in == NULL) { | |
758 | SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, | |
759 | ERR_R_MALLOC_FAILURE); | |
760 | goto err; | |
761 | } | |
762 | ||
763 | if (!BIO_read_filename(in, file)) | |
764 | goto err; | |
765 | ||
766 | for (;;) { | |
767 | if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) | |
768 | break; | |
769 | if ((xn = X509_get_subject_name(x)) == NULL) | |
770 | goto err; | |
771 | xn = X509_NAME_dup(xn); | |
772 | if (xn == NULL) | |
773 | goto err; | |
774 | if (sk_X509_NAME_find(stack, xn) >= 0) | |
775 | X509_NAME_free(xn); | |
776 | else | |
777 | sk_X509_NAME_push(stack, xn); | |
778 | } | |
779 | ||
780 | ERR_clear_error(); | |
781 | goto done; | |
782 | ||
783 | err: | |
784 | ret = 0; | |
785 | done: | |
786 | BIO_free(in); | |
787 | X509_free(x); | |
788 | (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); | |
789 | return ret; | |
790 | } | |
791 | ||
792 | /** | |
793 | * Add a directory of certs to a stack. | |
794 | * \param stack the stack to append to. | |
795 | * \param dir the directory to append from. All files in this directory will be | |
796 | * examined as potential certs. Any that are acceptable to | |
797 | * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be | |
798 | * included. | |
799 | * \return 1 for success, 0 for failure. Note that in the case of failure some | |
800 | * certs may have been added to \c stack. | |
801 | */ | |
802 | ||
803 | int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, | |
804 | const char *dir) | |
805 | { | |
806 | OPENSSL_DIR_CTX *d = NULL; | |
807 | const char *filename; | |
808 | int ret = 0; | |
809 | ||
810 | CRYPTO_w_lock(CRYPTO_LOCK_READDIR); | |
811 | ||
812 | /* Note that a side effect is that the CAs will be sorted by name */ | |
813 | ||
814 | while ((filename = OPENSSL_DIR_read(&d, dir))) { | |
815 | char buf[1024]; | |
816 | int r; | |
817 | ||
818 | if (strlen(dir) + strlen(filename) + 2 > sizeof buf) { | |
819 | SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, | |
820 | SSL_R_PATH_TOO_LONG); | |
821 | goto err; | |
822 | } | |
823 | #ifdef OPENSSL_SYS_VMS | |
824 | r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename); | |
825 | #else | |
826 | r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename); | |
827 | #endif | |
828 | if (r <= 0 || r >= (int)sizeof(buf)) | |
829 | goto err; | |
830 | if (!SSL_add_file_cert_subjects_to_stack(stack, buf)) | |
831 | goto err; | |
832 | } | |
833 | ||
834 | if (errno) { | |
835 | SYSerr(SYS_F_OPENDIR, get_last_sys_error()); | |
836 | ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); | |
837 | SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); | |
838 | goto err; | |
839 | } | |
840 | ||
841 | ret = 1; | |
842 | ||
843 | err: | |
844 | if (d) | |
845 | OPENSSL_DIR_end(&d); | |
846 | CRYPTO_w_unlock(CRYPTO_LOCK_READDIR); | |
847 | return ret; | |
848 | } | |
849 | ||
850 | /* Add a certificate to a BUF_MEM structure */ | |
851 | ||
852 | static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x) | |
853 | { | |
854 | int n; | |
855 | unsigned char *p; | |
856 | ||
857 | n = i2d_X509(x, NULL); | |
858 | if (!BUF_MEM_grow_clean(buf, (int)(n + (*l) + 3))) { | |
859 | SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB); | |
860 | return 0; | |
861 | } | |
862 | p = (unsigned char *)&(buf->data[*l]); | |
863 | l2n3(n, p); | |
864 | i2d_X509(x, &p); | |
865 | *l += n + 3; | |
866 | ||
867 | return 1; | |
868 | } | |
869 | ||
870 | /* Add certificate chain to internal SSL BUF_MEM strcuture */ | |
871 | int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l) | |
872 | { | |
873 | BUF_MEM *buf = s->init_buf; | |
874 | int i; | |
875 | ||
876 | X509 *x; | |
877 | STACK_OF(X509) *extra_certs; | |
878 | X509_STORE *chain_store; | |
879 | ||
880 | /* TLSv1 sends a chain with nothing in it, instead of an alert */ | |
881 | if (!BUF_MEM_grow_clean(buf, 10)) { | |
882 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_BUF_LIB); | |
883 | return 0; | |
884 | } | |
885 | ||
886 | if (!cpk || !cpk->x509) | |
887 | return 1; | |
888 | ||
889 | x = cpk->x509; | |
890 | ||
891 | /* | |
892 | * If we have a certificate specific chain use it, else use parent ctx. | |
893 | */ | |
894 | if (cpk->chain) | |
895 | extra_certs = cpk->chain; | |
896 | else | |
897 | extra_certs = s->ctx->extra_certs; | |
898 | ||
899 | if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs) | |
900 | chain_store = NULL; | |
901 | else if (s->cert->chain_store) | |
902 | chain_store = s->cert->chain_store; | |
903 | else | |
904 | chain_store = s->ctx->cert_store; | |
905 | ||
906 | if (chain_store) { | |
907 | X509_STORE_CTX xs_ctx; | |
908 | ||
909 | if (!X509_STORE_CTX_init(&xs_ctx, chain_store, x, NULL)) { | |
910 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_X509_LIB); | |
911 | return (0); | |
912 | } | |
913 | X509_verify_cert(&xs_ctx); | |
914 | /* Don't leave errors in the queue */ | |
915 | ERR_clear_error(); | |
916 | i = ssl_security_cert_chain(s, xs_ctx.chain, NULL, 0); | |
917 | if (i != 1) { | |
918 | X509_STORE_CTX_cleanup(&xs_ctx); | |
919 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i); | |
920 | return 0; | |
921 | } | |
922 | for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) { | |
923 | x = sk_X509_value(xs_ctx.chain, i); | |
924 | ||
925 | if (!ssl_add_cert_to_buf(buf, l, x)) { | |
926 | X509_STORE_CTX_cleanup(&xs_ctx); | |
927 | return 0; | |
928 | } | |
929 | } | |
930 | X509_STORE_CTX_cleanup(&xs_ctx); | |
931 | } else { | |
932 | i = ssl_security_cert_chain(s, extra_certs, x, 0); | |
933 | if (i != 1) { | |
934 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i); | |
935 | return 0; | |
936 | } | |
937 | if (!ssl_add_cert_to_buf(buf, l, x)) | |
938 | return 0; | |
939 | for (i = 0; i < sk_X509_num(extra_certs); i++) { | |
940 | x = sk_X509_value(extra_certs, i); | |
941 | if (!ssl_add_cert_to_buf(buf, l, x)) | |
942 | return 0; | |
943 | } | |
944 | } | |
945 | return 1; | |
946 | } | |
947 | ||
948 | /* Build a certificate chain for current certificate */ | |
949 | int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags) | |
950 | { | |
951 | CERT *c = s ? s->cert : ctx->cert; | |
952 | CERT_PKEY *cpk = c->key; | |
953 | X509_STORE *chain_store = NULL; | |
954 | X509_STORE_CTX xs_ctx; | |
955 | STACK_OF(X509) *chain = NULL, *untrusted = NULL; | |
956 | X509 *x; | |
957 | int i, rv = 0; | |
958 | unsigned long error; | |
959 | ||
960 | if (!cpk->x509) { | |
961 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET); | |
962 | goto err; | |
963 | } | |
964 | /* Rearranging and check the chain: add everything to a store */ | |
965 | if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) { | |
966 | chain_store = X509_STORE_new(); | |
967 | if (!chain_store) | |
968 | goto err; | |
969 | for (i = 0; i < sk_X509_num(cpk->chain); i++) { | |
970 | x = sk_X509_value(cpk->chain, i); | |
971 | if (!X509_STORE_add_cert(chain_store, x)) { | |
972 | error = ERR_peek_last_error(); | |
973 | if (ERR_GET_LIB(error) != ERR_LIB_X509 || | |
974 | ERR_GET_REASON(error) != | |
975 | X509_R_CERT_ALREADY_IN_HASH_TABLE) | |
976 | goto err; | |
977 | ERR_clear_error(); | |
978 | } | |
979 | } | |
980 | /* Add EE cert too: it might be self signed */ | |
981 | if (!X509_STORE_add_cert(chain_store, cpk->x509)) { | |
982 | error = ERR_peek_last_error(); | |
983 | if (ERR_GET_LIB(error) != ERR_LIB_X509 || | |
984 | ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE) | |
985 | goto err; | |
986 | ERR_clear_error(); | |
987 | } | |
988 | } else { | |
989 | if (c->chain_store) | |
990 | chain_store = c->chain_store; | |
991 | else if (s) | |
992 | chain_store = s->ctx->cert_store; | |
993 | else | |
994 | chain_store = ctx->cert_store; | |
995 | ||
996 | if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED) | |
997 | untrusted = cpk->chain; | |
998 | } | |
999 | ||
1000 | if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted)) { | |
1001 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB); | |
1002 | goto err; | |
1003 | } | |
1004 | /* Set suite B flags if needed */ | |
1005 | X509_STORE_CTX_set_flags(&xs_ctx, | |
1006 | c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS); | |
1007 | ||
1008 | i = X509_verify_cert(&xs_ctx); | |
1009 | if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) { | |
1010 | if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR) | |
1011 | ERR_clear_error(); | |
1012 | i = 1; | |
1013 | rv = 2; | |
1014 | } | |
1015 | if (i > 0) | |
1016 | chain = X509_STORE_CTX_get1_chain(&xs_ctx); | |
1017 | if (i <= 0) { | |
1018 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED); | |
1019 | i = X509_STORE_CTX_get_error(&xs_ctx); | |
1020 | ERR_add_error_data(2, "Verify error:", | |
1021 | X509_verify_cert_error_string(i)); | |
1022 | ||
1023 | X509_STORE_CTX_cleanup(&xs_ctx); | |
1024 | goto err; | |
1025 | } | |
1026 | X509_STORE_CTX_cleanup(&xs_ctx); | |
1027 | /* Remove EE certificate from chain */ | |
1028 | x = sk_X509_shift(chain); | |
1029 | X509_free(x); | |
1030 | if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) { | |
1031 | if (sk_X509_num(chain) > 0) { | |
1032 | /* See if last cert is self signed */ | |
1033 | x = sk_X509_value(chain, sk_X509_num(chain) - 1); | |
1034 | X509_check_purpose(x, -1, 0); | |
1035 | if (x->ex_flags & EXFLAG_SS) { | |
1036 | x = sk_X509_pop(chain); | |
1037 | X509_free(x); | |
1038 | } | |
1039 | } | |
1040 | } | |
1041 | /* | |
1042 | * Check security level of all CA certificates: EE will have been checked | |
1043 | * already. | |
1044 | */ | |
1045 | for (i = 0; i < sk_X509_num(chain); i++) { | |
1046 | x = sk_X509_value(chain, i); | |
1047 | rv = ssl_security_cert(s, ctx, x, 0, 0); | |
1048 | if (rv != 1) { | |
1049 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv); | |
1050 | sk_X509_pop_free(chain, X509_free); | |
1051 | rv = 0; | |
1052 | goto err; | |
1053 | } | |
1054 | } | |
1055 | sk_X509_pop_free(cpk->chain, X509_free); | |
1056 | cpk->chain = chain; | |
1057 | if (rv == 0) | |
1058 | rv = 1; | |
1059 | err: | |
1060 | if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) | |
1061 | X509_STORE_free(chain_store); | |
1062 | ||
1063 | return rv; | |
1064 | } | |
1065 | ||
1066 | int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref) | |
1067 | { | |
1068 | X509_STORE **pstore; | |
1069 | if (chain) | |
1070 | pstore = &c->chain_store; | |
1071 | else | |
1072 | pstore = &c->verify_store; | |
1073 | X509_STORE_free(*pstore); | |
1074 | *pstore = store; | |
1075 | if (ref && store) | |
1076 | CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE); | |
1077 | return 1; | |
1078 | } | |
1079 | ||
1080 | static int ssl_security_default_callback(SSL *s, SSL_CTX *ctx, int op, | |
1081 | int bits, int nid, void *other, | |
1082 | void *ex) | |
1083 | { | |
1084 | int level, minbits; | |
1085 | static const int minbits_table[5] = { 80, 112, 128, 192, 256 }; | |
1086 | if (ctx) | |
1087 | level = SSL_CTX_get_security_level(ctx); | |
1088 | else | |
1089 | level = SSL_get_security_level(s); | |
1090 | /* Level 0: anything goes */ | |
1091 | if (level <= 0) | |
1092 | return 1; | |
1093 | if (level > 5) | |
1094 | level = 5; | |
1095 | minbits = minbits_table[level - 1]; | |
1096 | switch (op) { | |
1097 | case SSL_SECOP_CIPHER_SUPPORTED: | |
1098 | case SSL_SECOP_CIPHER_SHARED: | |
1099 | case SSL_SECOP_CIPHER_CHECK: | |
1100 | { | |
1101 | const SSL_CIPHER *c = other; | |
1102 | /* No ciphers below security level */ | |
1103 | if (bits < minbits) | |
1104 | return 0; | |
1105 | /* No unauthenticated ciphersuites */ | |
1106 | if (c->algorithm_auth & SSL_aNULL) | |
1107 | return 0; | |
1108 | /* No MD5 mac ciphersuites */ | |
1109 | if (c->algorithm_mac & SSL_MD5) | |
1110 | return 0; | |
1111 | /* SHA1 HMAC is 160 bits of security */ | |
1112 | if (minbits > 160 && c->algorithm_mac & SSL_SHA1) | |
1113 | return 0; | |
1114 | /* Level 2: no RC4 */ | |
1115 | if (level >= 2 && c->algorithm_enc == SSL_RC4) | |
1116 | return 0; | |
1117 | /* Level 3: forward secure ciphersuites only */ | |
1118 | if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH))) | |
1119 | return 0; | |
1120 | break; | |
1121 | } | |
1122 | case SSL_SECOP_VERSION: | |
1123 | /* SSLv3 not allowed on level 2 */ | |
1124 | if (nid <= SSL3_VERSION && level >= 2) | |
1125 | return 0; | |
1126 | /* TLS v1.1 and above only for level 3 */ | |
1127 | if (nid <= TLS1_VERSION && level >= 3) | |
1128 | return 0; | |
1129 | /* TLS v1.2 only for level 4 and above */ | |
1130 | if (nid <= TLS1_1_VERSION && level >= 4) | |
1131 | return 0; | |
1132 | break; | |
1133 | ||
1134 | case SSL_SECOP_COMPRESSION: | |
1135 | if (level >= 2) | |
1136 | return 0; | |
1137 | break; | |
1138 | case SSL_SECOP_TICKET: | |
1139 | if (level >= 3) | |
1140 | return 0; | |
1141 | break; | |
1142 | default: | |
1143 | if (bits < minbits) | |
1144 | return 0; | |
1145 | } | |
1146 | return 1; | |
1147 | } | |
1148 | ||
1149 | int ssl_security(SSL *s, int op, int bits, int nid, void *other) | |
1150 | { | |
1151 | return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex); | |
1152 | } | |
1153 | ||
1154 | int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other) | |
1155 | { | |
1156 | return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other, | |
1157 | ctx->cert->sec_ex); | |
1158 | } |