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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
4 | * This package is an SSL implementation written | |
5 | * by Eric Young (eay@cryptsoft.com). | |
6 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 7 | * |
d02b48c6 RE |
8 | * This library is free for commercial and non-commercial use as long as |
9 | * the following conditions are aheared to. The following conditions | |
10 | * apply to all code found in this distribution, be it the RC4, RSA, | |
11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
12 | * included with this distribution is covered by the same copyright terms | |
13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 14 | * |
d02b48c6 RE |
15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
16 | * the code are not to be removed. | |
17 | * If this package is used in a product, Eric Young should be given attribution | |
18 | * as the author of the parts of the library used. | |
19 | * This can be in the form of a textual message at program startup or | |
20 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 21 | * |
d02b48c6 RE |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * 1. Redistributions of source code must retain the copyright | |
26 | * notice, this list of conditions and the following disclaimer. | |
27 | * 2. Redistributions in binary form must reproduce the above copyright | |
28 | * notice, this list of conditions and the following disclaimer in the | |
29 | * documentation and/or other materials provided with the distribution. | |
30 | * 3. All advertising materials mentioning features or use of this software | |
31 | * must display the following acknowledgement: | |
32 | * "This product includes cryptographic software written by | |
33 | * Eric Young (eay@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
d02b48c6 RE |
52 | * The licence and distribution terms for any publically available version or |
53 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
54 | * copied and put under another distribution licence | |
55 | * [including the GNU Public Licence.] | |
56 | */ | |
ca8e5b9b | 57 | /* ==================================================================== |
52b8dad8 | 58 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
ca8e5b9b BM |
59 | * |
60 | * Redistribution and use in source and binary forms, with or without | |
61 | * modification, are permitted provided that the following conditions | |
62 | * are met: | |
63 | * | |
64 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 65 | * notice, this list of conditions and the following disclaimer. |
ca8e5b9b BM |
66 | * |
67 | * 2. Redistributions in binary form must reproduce the above copyright | |
68 | * notice, this list of conditions and the following disclaimer in | |
69 | * the documentation and/or other materials provided with the | |
70 | * distribution. | |
71 | * | |
72 | * 3. All advertising materials mentioning features or use of this | |
73 | * software must display the following acknowledgment: | |
74 | * "This product includes software developed by the OpenSSL Project | |
675f605d | 75 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
ca8e5b9b BM |
76 | * |
77 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
78 | * endorse or promote products derived from this software without | |
79 | * prior written permission. For written permission, please contact | |
675f605d | 80 | * openssl-core@openssl.org. |
ca8e5b9b BM |
81 | * |
82 | * 5. Products derived from this software may not be called "OpenSSL" | |
83 | * nor may "OpenSSL" appear in their names without prior written | |
84 | * permission of the OpenSSL Project. | |
85 | * | |
86 | * 6. Redistributions of any form whatsoever must retain the following | |
87 | * acknowledgment: | |
88 | * "This product includes software developed by the OpenSSL Project | |
675f605d | 89 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
ca8e5b9b BM |
90 | * |
91 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
92 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
93 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
94 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
95 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
96 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
97 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
98 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
99 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
100 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
101 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
102 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
103 | * ==================================================================== | |
675f605d BM |
104 | * |
105 | * This product includes cryptographic software written by Eric Young | |
106 | * (eay@cryptsoft.com). This product includes software written by Tim | |
107 | * Hudson (tjh@cryptsoft.com). | |
108 | * | |
ca8e5b9b | 109 | */ |
ea262260 BM |
110 | /* ==================================================================== |
111 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
0f113f3e | 112 | * ECC cipher suite support in OpenSSL originally developed by |
ea262260 BM |
113 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. |
114 | */ | |
d02b48c6 RE |
115 | |
116 | #include <stdio.h> | |
17f389bb | 117 | |
41d2a336 | 118 | #include "e_os.h" |
17f389bb AP |
119 | #ifndef NO_SYS_TYPES_H |
120 | # include <sys/types.h> | |
121 | #endif | |
122 | ||
68570797 | 123 | #include "internal/o_dir.h" |
7823d792 | 124 | #include <openssl/lhash.h> |
ec577822 BM |
125 | #include <openssl/bio.h> |
126 | #include <openssl/pem.h> | |
bb7cd4e3 | 127 | #include <openssl/x509v3.h> |
3eeaab4b | 128 | #ifndef OPENSSL_NO_DH |
0f113f3e | 129 | # include <openssl/dh.h> |
3eeaab4b | 130 | #endif |
d095b68d | 131 | #include <openssl/bn.h> |
16203f7b | 132 | #include "internal/threads.h" |
d02b48c6 RE |
133 | #include "ssl_locl.h" |
134 | ||
0f113f3e MC |
135 | static int ssl_security_default_callback(SSL *s, SSL_CTX *ctx, int op, |
136 | int bits, int nid, void *other, | |
137 | void *ex); | |
b362ccab | 138 | |
16203f7b AG |
139 | static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT; |
140 | static volatile int ssl_x509_store_ctx_idx = -1; | |
0f113f3e | 141 | |
16203f7b AG |
142 | static void ssl_x509_store_ctx_init(void) |
143 | { | |
144 | ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0, | |
145 | "SSL for verify callback", | |
0f113f3e | 146 | NULL, NULL, NULL); |
16203f7b | 147 | } |
0f113f3e | 148 | |
16203f7b AG |
149 | int SSL_get_ex_data_X509_STORE_CTX_idx(void) |
150 | { | |
0f113f3e | 151 | |
16203f7b | 152 | CRYPTO_THREAD_run_once(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init); |
0f113f3e MC |
153 | return ssl_x509_store_ctx_idx; |
154 | } | |
dfeab068 | 155 | |
6b691a5c | 156 | CERT *ssl_cert_new(void) |
0f113f3e | 157 | { |
b51bce94 | 158 | CERT *ret = OPENSSL_zalloc(sizeof(*ret)); |
0f113f3e | 159 | |
0f113f3e MC |
160 | if (ret == NULL) { |
161 | SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE); | |
16203f7b | 162 | return NULL; |
0f113f3e | 163 | } |
0f113f3e MC |
164 | |
165 | ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]); | |
166 | ret->references = 1; | |
0f113f3e MC |
167 | ret->sec_cb = ssl_security_default_callback; |
168 | ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL; | |
169 | ret->sec_ex = NULL; | |
16203f7b AG |
170 | ret->lock = CRYPTO_THREAD_lock_new(); |
171 | if (ret->lock == NULL) { | |
172 | SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE); | |
173 | OPENSSL_free(ret); | |
174 | return NULL; | |
175 | } | |
176 | ||
177 | return ret; | |
0f113f3e | 178 | } |
d02b48c6 | 179 | |
ca8e5b9b | 180 | CERT *ssl_cert_dup(CERT *cert) |
0f113f3e | 181 | { |
b51bce94 | 182 | CERT *ret = OPENSSL_zalloc(sizeof(*ret)); |
0f113f3e MC |
183 | int i; |
184 | ||
0f113f3e MC |
185 | if (ret == NULL) { |
186 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); | |
16203f7b | 187 | return NULL; |
0f113f3e MC |
188 | } |
189 | ||
0e04674e | 190 | ret->references = 1; |
16f8d4eb | 191 | ret->key = &ret->pkeys[cert->key - cert->pkeys]; |
16203f7b | 192 | ret->lock = CRYPTO_THREAD_lock_new(); |
aeb5b955 | 193 | if (ret->lock == NULL) { |
16203f7b AG |
194 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); |
195 | OPENSSL_free(ret); | |
196 | return NULL; | |
197 | } | |
ca8e5b9b | 198 | |
bc36ee62 | 199 | #ifndef OPENSSL_NO_DH |
0f113f3e | 200 | if (cert->dh_tmp != NULL) { |
e2b420fd DSH |
201 | ret->dh_tmp = cert->dh_tmp; |
202 | EVP_PKEY_up_ref(ret->dh_tmp); | |
0f113f3e MC |
203 | } |
204 | ret->dh_tmp_cb = cert->dh_tmp_cb; | |
205 | ret->dh_tmp_auto = cert->dh_tmp_auto; | |
ca8e5b9b BM |
206 | #endif |
207 | ||
0f113f3e MC |
208 | for (i = 0; i < SSL_PKEY_NUM; i++) { |
209 | CERT_PKEY *cpk = cert->pkeys + i; | |
210 | CERT_PKEY *rpk = ret->pkeys + i; | |
211 | if (cpk->x509 != NULL) { | |
212 | rpk->x509 = cpk->x509; | |
05f0fb9f | 213 | X509_up_ref(rpk->x509); |
0f113f3e MC |
214 | } |
215 | ||
216 | if (cpk->privatekey != NULL) { | |
217 | rpk->privatekey = cpk->privatekey; | |
3aeb9348 | 218 | EVP_PKEY_up_ref(cpk->privatekey); |
0f113f3e MC |
219 | } |
220 | ||
221 | if (cpk->chain) { | |
222 | rpk->chain = X509_chain_up_ref(cpk->chain); | |
223 | if (!rpk->chain) { | |
224 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); | |
225 | goto err; | |
226 | } | |
227 | } | |
0f113f3e MC |
228 | if (cert->pkeys[i].serverinfo != NULL) { |
229 | /* Just copy everything. */ | |
230 | ret->pkeys[i].serverinfo = | |
231 | OPENSSL_malloc(cert->pkeys[i].serverinfo_length); | |
232 | if (ret->pkeys[i].serverinfo == NULL) { | |
233 | SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); | |
234 | goto err; | |
235 | } | |
236 | ret->pkeys[i].serverinfo_length = | |
237 | cert->pkeys[i].serverinfo_length; | |
238 | memcpy(ret->pkeys[i].serverinfo, | |
239 | cert->pkeys[i].serverinfo, | |
240 | cert->pkeys[i].serverinfo_length); | |
241 | } | |
0f113f3e MC |
242 | } |
243 | ||
76106e60 | 244 | /* Configured sigalgs copied across */ |
0f113f3e MC |
245 | if (cert->conf_sigalgs) { |
246 | ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen); | |
a71edf3b | 247 | if (ret->conf_sigalgs == NULL) |
0f113f3e MC |
248 | goto err; |
249 | memcpy(ret->conf_sigalgs, cert->conf_sigalgs, cert->conf_sigalgslen); | |
250 | ret->conf_sigalgslen = cert->conf_sigalgslen; | |
251 | } else | |
252 | ret->conf_sigalgs = NULL; | |
253 | ||
254 | if (cert->client_sigalgs) { | |
255 | ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen); | |
a71edf3b | 256 | if (ret->client_sigalgs == NULL) |
0f113f3e MC |
257 | goto err; |
258 | memcpy(ret->client_sigalgs, cert->client_sigalgs, | |
259 | cert->client_sigalgslen); | |
260 | ret->client_sigalgslen = cert->client_sigalgslen; | |
261 | } else | |
262 | ret->client_sigalgs = NULL; | |
263 | /* Shared sigalgs also NULL */ | |
264 | ret->shared_sigalgs = NULL; | |
265 | /* Copy any custom client certificate types */ | |
266 | if (cert->ctypes) { | |
267 | ret->ctypes = OPENSSL_malloc(cert->ctype_num); | |
a71edf3b | 268 | if (ret->ctypes == NULL) |
0f113f3e MC |
269 | goto err; |
270 | memcpy(ret->ctypes, cert->ctypes, cert->ctype_num); | |
271 | ret->ctype_num = cert->ctype_num; | |
272 | } | |
273 | ||
274 | ret->cert_flags = cert->cert_flags; | |
275 | ||
276 | ret->cert_cb = cert->cert_cb; | |
277 | ret->cert_cb_arg = cert->cert_cb_arg; | |
278 | ||
279 | if (cert->verify_store) { | |
c001ce33 | 280 | X509_STORE_up_ref(cert->verify_store); |
0f113f3e MC |
281 | ret->verify_store = cert->verify_store; |
282 | } | |
283 | ||
284 | if (cert->chain_store) { | |
c001ce33 | 285 | X509_STORE_up_ref(cert->chain_store); |
0f113f3e MC |
286 | ret->chain_store = cert->chain_store; |
287 | } | |
288 | ||
0f113f3e MC |
289 | ret->sec_cb = cert->sec_cb; |
290 | ret->sec_level = cert->sec_level; | |
291 | ret->sec_ex = cert->sec_ex; | |
b362ccab | 292 | |
0f113f3e MC |
293 | if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext)) |
294 | goto err; | |
295 | if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext)) | |
296 | goto err; | |
9076bd25 | 297 | #ifndef OPENSSL_NO_PSK |
df6da24b | 298 | if (cert->psk_identity_hint) { |
7644a9ae | 299 | ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint); |
df6da24b DSH |
300 | if (ret->psk_identity_hint == NULL) |
301 | goto err; | |
302 | } | |
9076bd25 | 303 | #endif |
16203f7b | 304 | return ret; |
0f113f3e MC |
305 | |
306 | err: | |
307 | ssl_cert_free(ret); | |
9ade64de | 308 | |
0f113f3e MC |
309 | return NULL; |
310 | } | |
ca8e5b9b | 311 | |
a5ee80b9 DSH |
312 | /* Free up and clear all certificates and chains */ |
313 | ||
314 | void ssl_cert_clear_certs(CERT *c) | |
0f113f3e MC |
315 | { |
316 | int i; | |
317 | if (c == NULL) | |
318 | return; | |
319 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
320 | CERT_PKEY *cpk = c->pkeys + i; | |
222561fe RS |
321 | X509_free(cpk->x509); |
322 | cpk->x509 = NULL; | |
c5ba2d99 RS |
323 | EVP_PKEY_free(cpk->privatekey); |
324 | cpk->privatekey = NULL; | |
222561fe RS |
325 | sk_X509_pop_free(cpk->chain, X509_free); |
326 | cpk->chain = NULL; | |
25aaa98a RS |
327 | OPENSSL_free(cpk->serverinfo); |
328 | cpk->serverinfo = NULL; | |
329 | cpk->serverinfo_length = 0; | |
0f113f3e MC |
330 | } |
331 | } | |
ca8e5b9b | 332 | |
eb90a483 | 333 | void ssl_cert_free(CERT *c) |
0f113f3e MC |
334 | { |
335 | int i; | |
d02b48c6 | 336 | |
0f113f3e MC |
337 | if (c == NULL) |
338 | return; | |
e03ddfae | 339 | |
16203f7b | 340 | CRYPTO_atomic_add(&c->references, -1, &i, c->lock); |
f3f1cf84 | 341 | REF_PRINT_COUNT("CERT", c); |
0f113f3e MC |
342 | if (i > 0) |
343 | return; | |
f3f1cf84 | 344 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 345 | |
bc36ee62 | 346 | #ifndef OPENSSL_NO_DH |
e2b420fd | 347 | EVP_PKEY_free(c->dh_tmp); |
d02b48c6 RE |
348 | #endif |
349 | ||
0f113f3e | 350 | ssl_cert_clear_certs(c); |
25aaa98a RS |
351 | OPENSSL_free(c->conf_sigalgs); |
352 | OPENSSL_free(c->client_sigalgs); | |
353 | OPENSSL_free(c->shared_sigalgs); | |
354 | OPENSSL_free(c->ctypes); | |
222561fe RS |
355 | X509_STORE_free(c->verify_store); |
356 | X509_STORE_free(c->chain_store); | |
0f113f3e MC |
357 | custom_exts_free(&c->cli_ext); |
358 | custom_exts_free(&c->srv_ext); | |
df6da24b DSH |
359 | #ifndef OPENSSL_NO_PSK |
360 | OPENSSL_free(c->psk_identity_hint); | |
361 | #endif | |
16203f7b | 362 | CRYPTO_THREAD_lock_free(c->lock); |
0f113f3e MC |
363 | OPENSSL_free(c); |
364 | } | |
d02b48c6 | 365 | |
b362ccab | 366 | int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain) |
0f113f3e MC |
367 | { |
368 | int i, r; | |
369 | CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key; | |
370 | if (!cpk) | |
371 | return 0; | |
222561fe | 372 | sk_X509_pop_free(cpk->chain, X509_free); |
0f113f3e MC |
373 | for (i = 0; i < sk_X509_num(chain); i++) { |
374 | r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0); | |
375 | if (r != 1) { | |
376 | SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r); | |
377 | return 0; | |
378 | } | |
379 | } | |
380 | cpk->chain = chain; | |
381 | return 1; | |
382 | } | |
f71c6e52 | 383 | |
b362ccab | 384 | int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain) |
0f113f3e MC |
385 | { |
386 | STACK_OF(X509) *dchain; | |
387 | if (!chain) | |
388 | return ssl_cert_set0_chain(s, ctx, NULL); | |
389 | dchain = X509_chain_up_ref(chain); | |
390 | if (!dchain) | |
391 | return 0; | |
392 | if (!ssl_cert_set0_chain(s, ctx, dchain)) { | |
393 | sk_X509_pop_free(dchain, X509_free); | |
394 | return 0; | |
395 | } | |
396 | return 1; | |
397 | } | |
f71c6e52 | 398 | |
b362ccab | 399 | int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x) |
0f113f3e MC |
400 | { |
401 | int r; | |
402 | CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key; | |
403 | if (!cpk) | |
404 | return 0; | |
405 | r = ssl_security_cert(s, ctx, x, 0, 0); | |
406 | if (r != 1) { | |
407 | SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r); | |
408 | return 0; | |
409 | } | |
410 | if (!cpk->chain) | |
411 | cpk->chain = sk_X509_new_null(); | |
412 | if (!cpk->chain || !sk_X509_push(cpk->chain, x)) | |
413 | return 0; | |
414 | return 1; | |
415 | } | |
f71c6e52 | 416 | |
b362ccab | 417 | int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x) |
0f113f3e MC |
418 | { |
419 | if (!ssl_cert_add0_chain_cert(s, ctx, x)) | |
420 | return 0; | |
05f0fb9f | 421 | X509_up_ref(x); |
0f113f3e MC |
422 | return 1; |
423 | } | |
7b6b246f RS |
424 | |
425 | int ssl_cert_select_current(CERT *c, X509 *x) | |
0f113f3e MC |
426 | { |
427 | int i; | |
428 | if (x == NULL) | |
429 | return 0; | |
430 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
431 | CERT_PKEY *cpk = c->pkeys + i; | |
432 | if (cpk->x509 == x && cpk->privatekey) { | |
433 | c->key = cpk; | |
434 | return 1; | |
435 | } | |
436 | } | |
437 | ||
438 | for (i = 0; i < SSL_PKEY_NUM; i++) { | |
439 | CERT_PKEY *cpk = c->pkeys + i; | |
440 | if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) { | |
441 | c->key = cpk; | |
442 | return 1; | |
443 | } | |
444 | } | |
445 | return 0; | |
446 | } | |
0f78819c DSH |
447 | |
448 | int ssl_cert_set_current(CERT *c, long op) | |
0f113f3e MC |
449 | { |
450 | int i, idx; | |
451 | if (!c) | |
452 | return 0; | |
453 | if (op == SSL_CERT_SET_FIRST) | |
454 | idx = 0; | |
455 | else if (op == SSL_CERT_SET_NEXT) { | |
456 | idx = (int)(c->key - c->pkeys + 1); | |
457 | if (idx >= SSL_PKEY_NUM) | |
458 | return 0; | |
459 | } else | |
460 | return 0; | |
461 | for (i = idx; i < SSL_PKEY_NUM; i++) { | |
462 | CERT_PKEY *cpk = c->pkeys + i; | |
463 | if (cpk->x509 && cpk->privatekey) { | |
464 | c->key = cpk; | |
465 | return 1; | |
466 | } | |
467 | } | |
468 | return 0; | |
469 | } | |
470 | ||
471 | void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg) | |
472 | { | |
473 | c->cert_cb = cb; | |
474 | c->cert_cb_arg = arg; | |
475 | } | |
18d71588 | 476 | |
0f113f3e MC |
477 | int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk) |
478 | { | |
479 | X509 *x; | |
480 | int i; | |
481 | X509_STORE *verify_store; | |
482 | X509_STORE_CTX ctx; | |
919ba009 | 483 | X509_VERIFY_PARAM *param; |
0f113f3e MC |
484 | |
485 | if (s->cert->verify_store) | |
486 | verify_store = s->cert->verify_store; | |
487 | else | |
488 | verify_store = s->ctx->cert_store; | |
489 | ||
490 | if ((sk == NULL) || (sk_X509_num(sk) == 0)) | |
491 | return (0); | |
492 | ||
493 | x = sk_X509_value(sk, 0); | |
494 | if (!X509_STORE_CTX_init(&ctx, verify_store, x, sk)) { | |
495 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB); | |
496 | return (0); | |
497 | } | |
919ba009 VD |
498 | param = X509_STORE_CTX_get0_param(&ctx); |
499 | ||
0f113f3e MC |
500 | /* Set suite B flags if needed */ |
501 | X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s)); | |
0f113f3e MC |
502 | X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s); |
503 | ||
919ba009 VD |
504 | /* Verify via DANE if enabled */ |
505 | if (DANETLS_ENABLED(&s->dane)) | |
506 | X509_STORE_CTX_set0_dane(&ctx, &s->dane); | |
507 | ||
0f113f3e MC |
508 | /* |
509 | * We need to inherit the verify parameters. These can be determined by | |
510 | * the context: if its a server it will verify SSL client certificates or | |
511 | * vice versa. | |
512 | */ | |
513 | ||
514 | X509_STORE_CTX_set_default(&ctx, s->server ? "ssl_client" : "ssl_server"); | |
515 | /* | |
919ba009 | 516 | * Anything non-default in "s->param" should overwrite anything in the ctx. |
0f113f3e | 517 | */ |
919ba009 | 518 | X509_VERIFY_PARAM_set1(param, s->param); |
0f113f3e MC |
519 | |
520 | if (s->verify_callback) | |
521 | X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback); | |
522 | ||
523 | if (s->ctx->app_verify_callback != NULL) | |
0f113f3e | 524 | i = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg); |
0f113f3e | 525 | else { |
0f113f3e MC |
526 | i = X509_verify_cert(&ctx); |
527 | # if 0 | |
528 | /* Dummy error calls so mkerr generates them */ | |
529 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_EE_KEY_TOO_SMALL); | |
530 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_CA_KEY_TOO_SMALL); | |
531 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_CA_MD_TOO_WEAK); | |
532 | # endif | |
533 | if (i > 0) | |
534 | i = ssl_security_cert_chain(s, ctx.chain, NULL, 1); | |
0f113f3e | 535 | } |
d02b48c6 | 536 | |
0f113f3e | 537 | s->verify_result = ctx.error; |
696178ed DSH |
538 | sk_X509_pop_free(s->verified_chain, X509_free); |
539 | s->verified_chain = NULL; | |
540 | if (X509_STORE_CTX_get_chain(&ctx) != NULL) { | |
541 | s->verified_chain = X509_STORE_CTX_get1_chain(&ctx); | |
542 | if (s->verified_chain == NULL) { | |
543 | SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE); | |
544 | i = 0; | |
545 | } | |
546 | } | |
919ba009 VD |
547 | |
548 | /* Move peername from the store context params to the SSL handle's */ | |
549 | X509_VERIFY_PARAM_move_peername(s->param, param); | |
550 | ||
0f113f3e | 551 | X509_STORE_CTX_cleanup(&ctx); |
d02b48c6 | 552 | |
0f113f3e MC |
553 | return (i); |
554 | } | |
d02b48c6 | 555 | |
0f113f3e MC |
556 | static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list, |
557 | STACK_OF(X509_NAME) *name_list) | |
558 | { | |
222561fe | 559 | sk_X509_NAME_pop_free(*ca_list, X509_NAME_free); |
0f113f3e MC |
560 | *ca_list = name_list; |
561 | } | |
d02b48c6 | 562 | |
838d25a1 | 563 | STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk) |
0f113f3e MC |
564 | { |
565 | int i; | |
566 | STACK_OF(X509_NAME) *ret; | |
567 | X509_NAME *name; | |
568 | ||
569 | ret = sk_X509_NAME_new_null(); | |
570 | for (i = 0; i < sk_X509_NAME_num(sk); i++) { | |
571 | name = X509_NAME_dup(sk_X509_NAME_value(sk, i)); | |
572 | if ((name == NULL) || !sk_X509_NAME_push(ret, name)) { | |
573 | sk_X509_NAME_pop_free(ret, X509_NAME_free); | |
574 | return (NULL); | |
575 | } | |
576 | } | |
577 | return (ret); | |
578 | } | |
579 | ||
580 | void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list) | |
581 | { | |
582 | set_client_CA_list(&(s->client_CA), name_list); | |
583 | } | |
584 | ||
585 | void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) | |
586 | { | |
587 | set_client_CA_list(&(ctx->client_CA), name_list); | |
588 | } | |
d02b48c6 | 589 | |
0821bcd4 | 590 | STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) |
0f113f3e MC |
591 | { |
592 | return (ctx->client_CA); | |
593 | } | |
d02b48c6 | 594 | |
0821bcd4 | 595 | STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s) |
0f113f3e | 596 | { |
23a635c0 | 597 | if (!s->server) { /* we are in the client */ |
0f113f3e MC |
598 | if (((s->version >> 8) == SSL3_VERSION_MAJOR) && (s->s3 != NULL)) |
599 | return (s->s3->tmp.ca_names); | |
600 | else | |
601 | return (NULL); | |
602 | } else { | |
603 | if (s->client_CA != NULL) | |
604 | return (s->client_CA); | |
605 | else | |
606 | return (s->ctx->client_CA); | |
607 | } | |
608 | } | |
609 | ||
610 | static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x) | |
611 | { | |
612 | X509_NAME *name; | |
613 | ||
614 | if (x == NULL) | |
615 | return (0); | |
616 | if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL)) | |
617 | return (0); | |
618 | ||
619 | if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL) | |
620 | return (0); | |
621 | ||
622 | if (!sk_X509_NAME_push(*sk, name)) { | |
623 | X509_NAME_free(name); | |
624 | return (0); | |
625 | } | |
626 | return (1); | |
627 | } | |
628 | ||
629 | int SSL_add_client_CA(SSL *ssl, X509 *x) | |
630 | { | |
631 | return (add_client_CA(&(ssl->client_CA), x)); | |
632 | } | |
633 | ||
634 | int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x) | |
635 | { | |
636 | return (add_client_CA(&(ctx->client_CA), x)); | |
637 | } | |
638 | ||
7823d792 | 639 | static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b) |
0f113f3e MC |
640 | { |
641 | return (X509_NAME_cmp(*a, *b)); | |
642 | } | |
d02b48c6 | 643 | |
7823d792 TF |
644 | static int xname_cmp(const X509_NAME *a, const X509_NAME *b) |
645 | { | |
646 | return X509_NAME_cmp(a, b); | |
647 | } | |
648 | ||
649 | static unsigned long xname_hash(const X509_NAME *a) | |
650 | { | |
651 | return X509_NAME_hash((X509_NAME *)a); | |
652 | } | |
653 | ||
0f113f3e | 654 | /** |
eb90a483 BL |
655 | * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed; |
656 | * it doesn't really have anything to do with clients (except that a common use | |
657 | * for a stack of CAs is to send it to the client). Actually, it doesn't have | |
658 | * much to do with CAs, either, since it will load any old cert. | |
659 | * \param file the file containing one or more certs. | |
660 | * \return a ::STACK containing the certs. | |
661 | */ | |
f73e07cf | 662 | STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) |
0f113f3e | 663 | { |
7823d792 | 664 | BIO *in = BIO_new(BIO_s_file()); |
0f113f3e MC |
665 | X509 *x = NULL; |
666 | X509_NAME *xn = NULL; | |
7823d792 TF |
667 | STACK_OF(X509_NAME) *ret = NULL; |
668 | LHASH_OF(X509_NAME) *name_hash = | |
669 | lh_X509_NAME_new(xname_hash, xname_cmp); | |
0f113f3e | 670 | |
7823d792 | 671 | if ((name_hash == NULL) || (in == NULL)) { |
0f113f3e MC |
672 | SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); |
673 | goto err; | |
674 | } | |
675 | ||
676 | if (!BIO_read_filename(in, file)) | |
677 | goto err; | |
678 | ||
679 | for (;;) { | |
680 | if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) | |
681 | break; | |
682 | if (ret == NULL) { | |
683 | ret = sk_X509_NAME_new_null(); | |
684 | if (ret == NULL) { | |
685 | SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE); | |
686 | goto err; | |
687 | } | |
688 | } | |
689 | if ((xn = X509_get_subject_name(x)) == NULL) | |
690 | goto err; | |
691 | /* check for duplicates */ | |
692 | xn = X509_NAME_dup(xn); | |
693 | if (xn == NULL) | |
694 | goto err; | |
7823d792 TF |
695 | if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) { |
696 | /* Duplicate. */ | |
0f113f3e | 697 | X509_NAME_free(xn); |
7823d792 TF |
698 | } else { |
699 | lh_X509_NAME_insert(name_hash, xn); | |
0f113f3e MC |
700 | sk_X509_NAME_push(ret, xn); |
701 | } | |
702 | } | |
66696478 | 703 | goto done; |
0f113f3e | 704 | |
0f113f3e | 705 | err: |
66696478 RS |
706 | sk_X509_NAME_pop_free(ret, X509_NAME_free); |
707 | ret = NULL; | |
708 | done: | |
ca3a82c3 | 709 | BIO_free(in); |
222561fe | 710 | X509_free(x); |
7823d792 | 711 | lh_X509_NAME_free(name_hash); |
0f113f3e MC |
712 | if (ret != NULL) |
713 | ERR_clear_error(); | |
714 | return (ret); | |
715 | } | |
d02b48c6 | 716 | |
0f113f3e | 717 | /** |
eb90a483 BL |
718 | * Add a file of certs to a stack. |
719 | * \param stack the stack to add to. | |
720 | * \param file the file to add from. All certs in this file that are not | |
721 | * already in the stack will be added. | |
722 | * \return 1 for success, 0 for failure. Note that in the case of failure some | |
723 | * certs may have been added to \c stack. | |
724 | */ | |
725 | ||
661b361b | 726 | int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, |
0f113f3e MC |
727 | const char *file) |
728 | { | |
729 | BIO *in; | |
730 | X509 *x = NULL; | |
731 | X509_NAME *xn = NULL; | |
732 | int ret = 1; | |
733 | int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b); | |
734 | ||
7823d792 | 735 | oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp); |
0f113f3e | 736 | |
9982cbbb | 737 | in = BIO_new(BIO_s_file()); |
0f113f3e MC |
738 | |
739 | if (in == NULL) { | |
740 | SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, | |
741 | ERR_R_MALLOC_FAILURE); | |
742 | goto err; | |
743 | } | |
744 | ||
745 | if (!BIO_read_filename(in, file)) | |
746 | goto err; | |
747 | ||
748 | for (;;) { | |
749 | if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) | |
750 | break; | |
751 | if ((xn = X509_get_subject_name(x)) == NULL) | |
752 | goto err; | |
753 | xn = X509_NAME_dup(xn); | |
754 | if (xn == NULL) | |
755 | goto err; | |
756 | if (sk_X509_NAME_find(stack, xn) >= 0) | |
757 | X509_NAME_free(xn); | |
758 | else | |
759 | sk_X509_NAME_push(stack, xn); | |
760 | } | |
761 | ||
762 | ERR_clear_error(); | |
66696478 | 763 | goto done; |
0f113f3e | 764 | |
0f113f3e MC |
765 | err: |
766 | ret = 0; | |
66696478 | 767 | done: |
ca3a82c3 | 768 | BIO_free(in); |
25aaa98a | 769 | X509_free(x); |
0f113f3e | 770 | (void)sk_X509_NAME_set_cmp_func(stack, oldcmp); |
0f113f3e MC |
771 | return ret; |
772 | } | |
773 | ||
774 | /** | |
eb90a483 BL |
775 | * Add a directory of certs to a stack. |
776 | * \param stack the stack to append to. | |
777 | * \param dir the directory to append from. All files in this directory will be | |
778 | * examined as potential certs. Any that are acceptable to | |
72e442a3 | 779 | * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be |
eb90a483 BL |
780 | * included. |
781 | * \return 1 for success, 0 for failure. Note that in the case of failure some | |
782 | * certs may have been added to \c stack. | |
783 | */ | |
784 | ||
661b361b | 785 | int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, |
0f113f3e MC |
786 | const char *dir) |
787 | { | |
788 | OPENSSL_DIR_CTX *d = NULL; | |
789 | const char *filename; | |
790 | int ret = 0; | |
eb90a483 | 791 | |
0f113f3e | 792 | /* Note that a side effect is that the CAs will be sorted by name */ |
4083a229 | 793 | |
0f113f3e MC |
794 | while ((filename = OPENSSL_DIR_read(&d, dir))) { |
795 | char buf[1024]; | |
796 | int r; | |
4083a229 | 797 | |
0f113f3e MC |
798 | if (strlen(dir) + strlen(filename) + 2 > sizeof buf) { |
799 | SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, | |
800 | SSL_R_PATH_TOO_LONG); | |
801 | goto err; | |
802 | } | |
4083a229 | 803 | #ifdef OPENSSL_SYS_VMS |
0f113f3e | 804 | r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename); |
4083a229 | 805 | #else |
0f113f3e | 806 | r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename); |
4083a229 | 807 | #endif |
0f113f3e MC |
808 | if (r <= 0 || r >= (int)sizeof(buf)) |
809 | goto err; | |
810 | if (!SSL_add_file_cert_subjects_to_stack(stack, buf)) | |
811 | goto err; | |
812 | } | |
813 | ||
814 | if (errno) { | |
815 | SYSerr(SYS_F_OPENDIR, get_last_sys_error()); | |
816 | ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')"); | |
817 | SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB); | |
818 | goto err; | |
819 | } | |
820 | ||
821 | ret = 1; | |
822 | ||
823 | err: | |
824 | if (d) | |
825 | OPENSSL_DIR_end(&d); | |
16203f7b | 826 | |
0f113f3e MC |
827 | return ret; |
828 | } | |
285046ec | 829 | |
4379d0e4 DSH |
830 | /* Add a certificate to a BUF_MEM structure */ |
831 | ||
832 | static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x) | |
0f113f3e MC |
833 | { |
834 | int n; | |
835 | unsigned char *p; | |
836 | ||
837 | n = i2d_X509(x, NULL); | |
838 | if (!BUF_MEM_grow_clean(buf, (int)(n + (*l) + 3))) { | |
839 | SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB); | |
840 | return 0; | |
841 | } | |
842 | p = (unsigned char *)&(buf->data[*l]); | |
843 | l2n3(n, p); | |
844 | i2d_X509(x, &p); | |
845 | *l += n + 3; | |
846 | ||
847 | return 1; | |
848 | } | |
4379d0e4 DSH |
849 | |
850 | /* Add certificate chain to internal SSL BUF_MEM strcuture */ | |
c526ed41 | 851 | int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l) |
0f113f3e MC |
852 | { |
853 | BUF_MEM *buf = s->init_buf; | |
854 | int i; | |
855 | ||
856 | X509 *x; | |
857 | STACK_OF(X509) *extra_certs; | |
858 | X509_STORE *chain_store; | |
859 | ||
860 | /* TLSv1 sends a chain with nothing in it, instead of an alert */ | |
861 | if (!BUF_MEM_grow_clean(buf, 10)) { | |
862 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_BUF_LIB); | |
863 | return 0; | |
864 | } | |
865 | ||
866 | if (!cpk || !cpk->x509) | |
867 | return 1; | |
868 | ||
869 | x = cpk->x509; | |
870 | ||
871 | /* | |
872 | * If we have a certificate specific chain use it, else use parent ctx. | |
873 | */ | |
874 | if (cpk->chain) | |
875 | extra_certs = cpk->chain; | |
876 | else | |
877 | extra_certs = s->ctx->extra_certs; | |
878 | ||
879 | if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs) | |
880 | chain_store = NULL; | |
881 | else if (s->cert->chain_store) | |
882 | chain_store = s->cert->chain_store; | |
883 | else | |
884 | chain_store = s->ctx->cert_store; | |
885 | ||
886 | if (chain_store) { | |
887 | X509_STORE_CTX xs_ctx; | |
888 | ||
889 | if (!X509_STORE_CTX_init(&xs_ctx, chain_store, x, NULL)) { | |
890 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_X509_LIB); | |
891 | return (0); | |
892 | } | |
ae4d0c8d MC |
893 | /* |
894 | * It is valid for the chain not to be complete (because normally we | |
895 | * don't include the root cert in the chain). Therefore we deliberately | |
896 | * ignore the error return from this call. We're not actually verifying | |
897 | * the cert - we're just building as much of the chain as we can | |
898 | */ | |
0f113f3e MC |
899 | X509_verify_cert(&xs_ctx); |
900 | /* Don't leave errors in the queue */ | |
901 | ERR_clear_error(); | |
902 | i = ssl_security_cert_chain(s, xs_ctx.chain, NULL, 0); | |
903 | if (i != 1) { | |
904 | X509_STORE_CTX_cleanup(&xs_ctx); | |
905 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i); | |
906 | return 0; | |
907 | } | |
908 | for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) { | |
909 | x = sk_X509_value(xs_ctx.chain, i); | |
910 | ||
911 | if (!ssl_add_cert_to_buf(buf, l, x)) { | |
912 | X509_STORE_CTX_cleanup(&xs_ctx); | |
913 | return 0; | |
914 | } | |
915 | } | |
916 | X509_STORE_CTX_cleanup(&xs_ctx); | |
917 | } else { | |
918 | i = ssl_security_cert_chain(s, extra_certs, x, 0); | |
919 | if (i != 1) { | |
920 | SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, i); | |
921 | return 0; | |
922 | } | |
923 | if (!ssl_add_cert_to_buf(buf, l, x)) | |
924 | return 0; | |
925 | for (i = 0; i < sk_X509_num(extra_certs); i++) { | |
926 | x = sk_X509_value(extra_certs, i); | |
927 | if (!ssl_add_cert_to_buf(buf, l, x)) | |
928 | return 0; | |
929 | } | |
930 | } | |
931 | return 1; | |
932 | } | |
4379d0e4 | 933 | |
74ecfab4 | 934 | /* Build a certificate chain for current certificate */ |
b362ccab | 935 | int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags) |
0f113f3e MC |
936 | { |
937 | CERT *c = s ? s->cert : ctx->cert; | |
938 | CERT_PKEY *cpk = c->key; | |
939 | X509_STORE *chain_store = NULL; | |
940 | X509_STORE_CTX xs_ctx; | |
941 | STACK_OF(X509) *chain = NULL, *untrusted = NULL; | |
942 | X509 *x; | |
943 | int i, rv = 0; | |
944 | unsigned long error; | |
945 | ||
946 | if (!cpk->x509) { | |
947 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET); | |
948 | goto err; | |
949 | } | |
950 | /* Rearranging and check the chain: add everything to a store */ | |
951 | if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) { | |
952 | chain_store = X509_STORE_new(); | |
a71edf3b | 953 | if (chain_store == NULL) |
0f113f3e MC |
954 | goto err; |
955 | for (i = 0; i < sk_X509_num(cpk->chain); i++) { | |
956 | x = sk_X509_value(cpk->chain, i); | |
957 | if (!X509_STORE_add_cert(chain_store, x)) { | |
958 | error = ERR_peek_last_error(); | |
959 | if (ERR_GET_LIB(error) != ERR_LIB_X509 || | |
960 | ERR_GET_REASON(error) != | |
961 | X509_R_CERT_ALREADY_IN_HASH_TABLE) | |
962 | goto err; | |
963 | ERR_clear_error(); | |
964 | } | |
965 | } | |
966 | /* Add EE cert too: it might be self signed */ | |
967 | if (!X509_STORE_add_cert(chain_store, cpk->x509)) { | |
968 | error = ERR_peek_last_error(); | |
969 | if (ERR_GET_LIB(error) != ERR_LIB_X509 || | |
970 | ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE) | |
971 | goto err; | |
972 | ERR_clear_error(); | |
973 | } | |
974 | } else { | |
975 | if (c->chain_store) | |
976 | chain_store = c->chain_store; | |
977 | else if (s) | |
978 | chain_store = s->ctx->cert_store; | |
979 | else | |
980 | chain_store = ctx->cert_store; | |
981 | ||
982 | if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED) | |
983 | untrusted = cpk->chain; | |
984 | } | |
985 | ||
986 | if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted)) { | |
987 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB); | |
988 | goto err; | |
989 | } | |
990 | /* Set suite B flags if needed */ | |
991 | X509_STORE_CTX_set_flags(&xs_ctx, | |
992 | c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS); | |
993 | ||
994 | i = X509_verify_cert(&xs_ctx); | |
995 | if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) { | |
996 | if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR) | |
997 | ERR_clear_error(); | |
998 | i = 1; | |
999 | rv = 2; | |
1000 | } | |
1001 | if (i > 0) | |
1002 | chain = X509_STORE_CTX_get1_chain(&xs_ctx); | |
1003 | if (i <= 0) { | |
1004 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED); | |
1005 | i = X509_STORE_CTX_get_error(&xs_ctx); | |
1006 | ERR_add_error_data(2, "Verify error:", | |
1007 | X509_verify_cert_error_string(i)); | |
1008 | ||
1009 | X509_STORE_CTX_cleanup(&xs_ctx); | |
1010 | goto err; | |
1011 | } | |
1012 | X509_STORE_CTX_cleanup(&xs_ctx); | |
1013 | /* Remove EE certificate from chain */ | |
1014 | x = sk_X509_shift(chain); | |
1015 | X509_free(x); | |
1016 | if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) { | |
1017 | if (sk_X509_num(chain) > 0) { | |
1018 | /* See if last cert is self signed */ | |
1019 | x = sk_X509_value(chain, sk_X509_num(chain) - 1); | |
a8d8e06b | 1020 | if (X509_get_extension_flags(x) & EXFLAG_SS) { |
0f113f3e MC |
1021 | x = sk_X509_pop(chain); |
1022 | X509_free(x); | |
1023 | } | |
1024 | } | |
1025 | } | |
1026 | /* | |
1027 | * Check security level of all CA certificates: EE will have been checked | |
1028 | * already. | |
1029 | */ | |
1030 | for (i = 0; i < sk_X509_num(chain); i++) { | |
1031 | x = sk_X509_value(chain, i); | |
1032 | rv = ssl_security_cert(s, ctx, x, 0, 0); | |
1033 | if (rv != 1) { | |
1034 | SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv); | |
1035 | sk_X509_pop_free(chain, X509_free); | |
1036 | rv = 0; | |
1037 | goto err; | |
1038 | } | |
1039 | } | |
222561fe | 1040 | sk_X509_pop_free(cpk->chain, X509_free); |
0f113f3e MC |
1041 | cpk->chain = chain; |
1042 | if (rv == 0) | |
1043 | rv = 1; | |
1044 | err: | |
1045 | if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) | |
1046 | X509_STORE_free(chain_store); | |
1047 | ||
1048 | return rv; | |
1049 | } | |
74ecfab4 DSH |
1050 | |
1051 | int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref) | |
0f113f3e MC |
1052 | { |
1053 | X509_STORE **pstore; | |
1054 | if (chain) | |
1055 | pstore = &c->chain_store; | |
1056 | else | |
1057 | pstore = &c->verify_store; | |
222561fe | 1058 | X509_STORE_free(*pstore); |
0f113f3e MC |
1059 | *pstore = store; |
1060 | if (ref && store) | |
c001ce33 | 1061 | X509_STORE_up_ref(store); |
0f113f3e MC |
1062 | return 1; |
1063 | } | |
1064 | ||
1065 | static int ssl_security_default_callback(SSL *s, SSL_CTX *ctx, int op, | |
1066 | int bits, int nid, void *other, | |
1067 | void *ex) | |
1068 | { | |
1069 | int level, minbits; | |
1070 | static const int minbits_table[5] = { 80, 112, 128, 192, 256 }; | |
1071 | if (ctx) | |
1072 | level = SSL_CTX_get_security_level(ctx); | |
1073 | else | |
1074 | level = SSL_get_security_level(s); | |
a7cf07b4 VD |
1075 | |
1076 | if (level <= 0) { | |
1077 | /* | |
1078 | * No EDH keys weaker than 1024-bits even at level 0, otherwise, | |
1079 | * anything goes. | |
1080 | */ | |
1081 | if (op == SSL_SECOP_TMP_DH && bits < 80) | |
1082 | return 0; | |
0f113f3e | 1083 | return 1; |
a7cf07b4 | 1084 | } |
0f113f3e MC |
1085 | if (level > 5) |
1086 | level = 5; | |
1087 | minbits = minbits_table[level - 1]; | |
1088 | switch (op) { | |
1089 | case SSL_SECOP_CIPHER_SUPPORTED: | |
1090 | case SSL_SECOP_CIPHER_SHARED: | |
1091 | case SSL_SECOP_CIPHER_CHECK: | |
1092 | { | |
1093 | const SSL_CIPHER *c = other; | |
1094 | /* No ciphers below security level */ | |
1095 | if (bits < minbits) | |
1096 | return 0; | |
1097 | /* No unauthenticated ciphersuites */ | |
1098 | if (c->algorithm_auth & SSL_aNULL) | |
1099 | return 0; | |
1100 | /* No MD5 mac ciphersuites */ | |
1101 | if (c->algorithm_mac & SSL_MD5) | |
1102 | return 0; | |
1103 | /* SHA1 HMAC is 160 bits of security */ | |
1104 | if (minbits > 160 && c->algorithm_mac & SSL_SHA1) | |
1105 | return 0; | |
1106 | /* Level 2: no RC4 */ | |
1107 | if (level >= 2 && c->algorithm_enc == SSL_RC4) | |
1108 | return 0; | |
1109 | /* Level 3: forward secure ciphersuites only */ | |
1110 | if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH))) | |
1111 | return 0; | |
1112 | break; | |
1113 | } | |
1114 | case SSL_SECOP_VERSION: | |
4fa52141 VD |
1115 | if (!SSL_IS_DTLS(s)) { |
1116 | /* SSLv3 not allowed at level 2 */ | |
1117 | if (nid <= SSL3_VERSION && level >= 2) | |
1118 | return 0; | |
1119 | /* TLS v1.1 and above only for level 3 */ | |
1120 | if (nid <= TLS1_VERSION && level >= 3) | |
1121 | return 0; | |
1122 | /* TLS v1.2 only for level 4 and above */ | |
1123 | if (nid <= TLS1_1_VERSION && level >= 4) | |
1124 | return 0; | |
1125 | } else { | |
1126 | /* DTLS v1.2 only for level 4 and above */ | |
1127 | if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4) | |
1128 | return 0; | |
1129 | } | |
0f113f3e MC |
1130 | break; |
1131 | ||
1132 | case SSL_SECOP_COMPRESSION: | |
1133 | if (level >= 2) | |
1134 | return 0; | |
1135 | break; | |
1136 | case SSL_SECOP_TICKET: | |
1137 | if (level >= 3) | |
1138 | return 0; | |
1139 | break; | |
1140 | default: | |
1141 | if (bits < minbits) | |
1142 | return 0; | |
1143 | } | |
1144 | return 1; | |
1145 | } | |
b362ccab DSH |
1146 | |
1147 | int ssl_security(SSL *s, int op, int bits, int nid, void *other) | |
0f113f3e MC |
1148 | { |
1149 | return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex); | |
1150 | } | |
b362ccab DSH |
1151 | |
1152 | int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other) | |
0f113f3e MC |
1153 | { |
1154 | return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other, | |
1155 | ctx->cert->sec_ex); | |
1156 | } |