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d02b48c6 | 1 | /* ssl/s3_clnt.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
8c74b5e5 | 58 | /* ==================================================================== |
52b8dad8 | 59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
8c74b5e5 BM |
60 | * |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
ea262260 BM |
111 | /* ==================================================================== |
112 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
113 | * | |
114 | * Portions of the attached software ("Contribution") are developed by | |
115 | * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. | |
116 | * | |
117 | * The Contribution is licensed pursuant to the OpenSSL open source | |
118 | * license provided above. | |
119 | * | |
ea262260 BM |
120 | * ECC cipher suite support in OpenSSL originally written by |
121 | * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories. | |
122 | * | |
123 | */ | |
ddac1974 NL |
124 | /* ==================================================================== |
125 | * Copyright 2005 Nokia. All rights reserved. | |
126 | * | |
127 | * The portions of the attached software ("Contribution") is developed by | |
128 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
129 | * license. | |
130 | * | |
131 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
132 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
133 | * support (see RFC 4279) to OpenSSL. | |
134 | * | |
135 | * No patent licenses or other rights except those expressly stated in | |
136 | * the OpenSSL open source license shall be deemed granted or received | |
137 | * expressly, by implication, estoppel, or otherwise. | |
138 | * | |
139 | * No assurances are provided by Nokia that the Contribution does not | |
140 | * infringe the patent or other intellectual property rights of any third | |
141 | * party or that the license provides you with all the necessary rights | |
142 | * to make use of the Contribution. | |
143 | * | |
144 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
145 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
146 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
147 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
148 | * OTHERWISE. | |
149 | */ | |
d02b48c6 RE |
150 | |
151 | #include <stdio.h> | |
7b63c0fa LJ |
152 | #include "ssl_locl.h" |
153 | #include "kssl_lcl.h" | |
ec577822 BM |
154 | #include <openssl/buffer.h> |
155 | #include <openssl/rand.h> | |
156 | #include <openssl/objects.h> | |
157 | #include <openssl/evp.h> | |
dbad1690 | 158 | #include <openssl/md5.h> |
3eeaab4b | 159 | #ifndef OPENSSL_NO_DH |
60a938c6 | 160 | #include <openssl/dh.h> |
3eeaab4b | 161 | #endif |
d095b68d | 162 | #include <openssl/bn.h> |
368888bc DSH |
163 | #ifndef OPENSSL_NO_ENGINE |
164 | #include <openssl/engine.h> | |
165 | #endif | |
f9b3bff6 | 166 | |
4ebb342f | 167 | static const SSL_METHOD *ssl3_get_client_method(int ver); |
ccd86b68 | 168 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
6434abbf DSH |
169 | #ifndef OPENSSL_NO_TLSEXT |
170 | static int ssl3_check_finished(SSL *s); | |
171 | #endif | |
ea262260 | 172 | |
4ebb342f | 173 | static const SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 174 | { |
58964a49 | 175 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
176 | return(SSLv3_client_method()); |
177 | else | |
178 | return(NULL); | |
179 | } | |
180 | ||
f3b656b2 DSH |
181 | IMPLEMENT_ssl3_meth_func(SSLv3_client_method, |
182 | ssl_undefined_function, | |
183 | ssl3_connect, | |
184 | ssl3_get_client_method) | |
d02b48c6 | 185 | |
6b691a5c | 186 | int ssl3_connect(SSL *s) |
d02b48c6 | 187 | { |
8d6ad9e3 | 188 | BUF_MEM *buf=NULL; |
52b8dad8 | 189 | unsigned long Time=(unsigned long)time(NULL); |
d02b48c6 | 190 | long num1; |
45d87a1f | 191 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 192 | int ret= -1; |
477fd459 | 193 | int new_state,state,skip=0; |
d02b48c6 | 194 | |
eb952088 | 195 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 196 | ERR_clear_error(); |
58964a49 | 197 | clear_sys_error(); |
d02b48c6 RE |
198 | |
199 | if (s->info_callback != NULL) | |
200 | cb=s->info_callback; | |
201 | else if (s->ctx->info_callback != NULL) | |
202 | cb=s->ctx->info_callback; | |
203 | ||
d02b48c6 | 204 | s->in_handshake++; |
979689aa | 205 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 RE |
206 | |
207 | for (;;) | |
208 | { | |
209 | state=s->state; | |
210 | ||
211 | switch(s->state) | |
212 | { | |
213 | case SSL_ST_RENEGOTIATE: | |
214 | s->new_session=1; | |
215 | s->state=SSL_ST_CONNECT; | |
413c4f45 | 216 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
217 | /* break */ |
218 | case SSL_ST_BEFORE: | |
219 | case SSL_ST_CONNECT: | |
220 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
221 | case SSL_ST_OK|SSL_ST_CONNECT: | |
222 | ||
413c4f45 | 223 | s->server=0; |
d02b48c6 RE |
224 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
225 | ||
58964a49 | 226 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 227 | { |
5277d7cb | 228 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
229 | ret = -1; |
230 | goto end; | |
231 | } | |
232 | ||
58964a49 | 233 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
234 | s->type=SSL_ST_CONNECT; |
235 | ||
236 | if (s->init_buf == NULL) | |
237 | { | |
238 | if ((buf=BUF_MEM_new()) == NULL) | |
239 | { | |
240 | ret= -1; | |
241 | goto end; | |
242 | } | |
243 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
244 | { | |
245 | ret= -1; | |
246 | goto end; | |
247 | } | |
248 | s->init_buf=buf; | |
8d6ad9e3 | 249 | buf=NULL; |
d02b48c6 RE |
250 | } |
251 | ||
252 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
253 | ||
254 | /* setup buffing BIO */ | |
58964a49 | 255 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
256 | |
257 | /* don't push the buffering BIO quite yet */ | |
258 | ||
259 | ssl3_init_finished_mac(s); | |
260 | ||
261 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 262 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
263 | s->init_num=0; |
264 | break; | |
265 | ||
266 | case SSL3_ST_CW_CLNT_HELLO_A: | |
267 | case SSL3_ST_CW_CLNT_HELLO_B: | |
268 | ||
269 | s->shutdown=0; | |
270 | ret=ssl3_client_hello(s); | |
271 | if (ret <= 0) goto end; | |
272 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
273 | s->init_num=0; | |
274 | ||
275 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
276 | if (s->bbio != s->wbio) |
277 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
278 | |
279 | break; | |
280 | ||
281 | case SSL3_ST_CR_SRVR_HELLO_A: | |
282 | case SSL3_ST_CR_SRVR_HELLO_B: | |
283 | ret=ssl3_get_server_hello(s); | |
284 | if (ret <= 0) goto end; | |
241520e6 | 285 | |
d02b48c6 RE |
286 | if (s->hit) |
287 | s->state=SSL3_ST_CR_FINISHED_A; | |
288 | else | |
289 | s->state=SSL3_ST_CR_CERT_A; | |
290 | s->init_num=0; | |
291 | break; | |
292 | ||
293 | case SSL3_ST_CR_CERT_A: | |
294 | case SSL3_ST_CR_CERT_B: | |
6434abbf DSH |
295 | #ifndef OPENSSL_NO_TLSEXT |
296 | ret=ssl3_check_finished(s); | |
297 | if (ret <= 0) goto end; | |
298 | if (ret == 2) | |
299 | { | |
300 | s->hit = 1; | |
31f528b1 DSH |
301 | if (s->tlsext_ticket_expected) |
302 | s->state=SSL3_ST_CR_SESSION_TICKET_A; | |
303 | else | |
304 | s->state=SSL3_ST_CR_FINISHED_A; | |
6434abbf DSH |
305 | s->init_num=0; |
306 | break; | |
307 | } | |
308 | #endif | |
ea262260 | 309 | /* Check if it is anon DH/ECDH */ |
ddac1974 | 310 | /* or PSK */ |
52b8dad8 BM |
311 | if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) && |
312 | !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) | |
d02b48c6 RE |
313 | { |
314 | ret=ssl3_get_server_certificate(s); | |
315 | if (ret <= 0) goto end; | |
67c8e7f4 DSH |
316 | #ifndef OPENSSL_NO_TLSEXT |
317 | if (s->tlsext_status_expected) | |
318 | s->state=SSL3_ST_CR_CERT_STATUS_A; | |
319 | else | |
320 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
321 | } | |
322 | else | |
323 | { | |
324 | skip = 1; | |
325 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
d02b48c6 | 326 | } |
67c8e7f4 | 327 | #else |
3ce54f35 | 328 | } |
d02b48c6 RE |
329 | else |
330 | skip=1; | |
67c8e7f4 | 331 | |
d02b48c6 | 332 | s->state=SSL3_ST_CR_KEY_EXCH_A; |
67c8e7f4 | 333 | #endif |
d02b48c6 RE |
334 | s->init_num=0; |
335 | break; | |
336 | ||
337 | case SSL3_ST_CR_KEY_EXCH_A: | |
338 | case SSL3_ST_CR_KEY_EXCH_B: | |
339 | ret=ssl3_get_key_exchange(s); | |
340 | if (ret <= 0) goto end; | |
341 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
342 | s->init_num=0; | |
343 | ||
344 | /* at this point we check that we have the | |
345 | * required stuff from the server */ | |
346 | if (!ssl3_check_cert_and_algorithm(s)) | |
347 | { | |
348 | ret= -1; | |
349 | goto end; | |
350 | } | |
351 | break; | |
352 | ||
353 | case SSL3_ST_CR_CERT_REQ_A: | |
354 | case SSL3_ST_CR_CERT_REQ_B: | |
355 | ret=ssl3_get_certificate_request(s); | |
356 | if (ret <= 0) goto end; | |
357 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
358 | s->init_num=0; | |
359 | break; | |
360 | ||
361 | case SSL3_ST_CR_SRVR_DONE_A: | |
362 | case SSL3_ST_CR_SRVR_DONE_B: | |
363 | ret=ssl3_get_server_done(s); | |
364 | if (ret <= 0) goto end; | |
365 | if (s->s3->tmp.cert_req) | |
366 | s->state=SSL3_ST_CW_CERT_A; | |
367 | else | |
368 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
369 | s->init_num=0; | |
370 | ||
371 | break; | |
372 | ||
373 | case SSL3_ST_CW_CERT_A: | |
374 | case SSL3_ST_CW_CERT_B: | |
375 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 376 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
377 | ret=ssl3_send_client_certificate(s); |
378 | if (ret <= 0) goto end; | |
379 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
380 | s->init_num=0; | |
381 | break; | |
382 | ||
383 | case SSL3_ST_CW_KEY_EXCH_A: | |
384 | case SSL3_ST_CW_KEY_EXCH_B: | |
385 | ret=ssl3_send_client_key_exchange(s); | |
386 | if (ret <= 0) goto end; | |
d02b48c6 RE |
387 | /* EAY EAY EAY need to check for DH fix cert |
388 | * sent back */ | |
58964a49 RE |
389 | /* For TLS, cert_req is set to 2, so a cert chain |
390 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
391 | /* XXX: For now, we do not support client |
392 | * authentication in ECDH cipher suites with | |
393 | * ECDH (rather than ECDSA) certificates. | |
394 | * We need to skip the certificate verify | |
395 | * message when client's ECDH public key is sent | |
396 | * inside the client certificate. | |
397 | */ | |
58964a49 | 398 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
399 | { |
400 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
401 | } | |
402 | else | |
403 | { | |
404 | s->state=SSL3_ST_CW_CHANGE_A; | |
405 | s->s3->change_cipher_spec=0; | |
406 | } | |
bfd502f0 DSH |
407 | if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) |
408 | { | |
409 | s->state=SSL3_ST_CW_CHANGE_A; | |
410 | s->s3->change_cipher_spec=0; | |
411 | } | |
d02b48c6 RE |
412 | |
413 | s->init_num=0; | |
414 | break; | |
415 | ||
416 | case SSL3_ST_CW_CERT_VRFY_A: | |
417 | case SSL3_ST_CW_CERT_VRFY_B: | |
418 | ret=ssl3_send_client_verify(s); | |
419 | if (ret <= 0) goto end; | |
420 | s->state=SSL3_ST_CW_CHANGE_A; | |
421 | s->init_num=0; | |
422 | s->s3->change_cipher_spec=0; | |
423 | break; | |
424 | ||
425 | case SSL3_ST_CW_CHANGE_A: | |
426 | case SSL3_ST_CW_CHANGE_B: | |
427 | ret=ssl3_send_change_cipher_spec(s, | |
428 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
429 | if (ret <= 0) goto end; | |
430 | s->state=SSL3_ST_CW_FINISHED_A; | |
431 | s->init_num=0; | |
432 | ||
433 | s->session->cipher=s->s3->tmp.new_cipher; | |
09b6c2ef DSH |
434 | #ifdef OPENSSL_NO_COMP |
435 | s->session->compress_meth=0; | |
436 | #else | |
413c4f45 MC |
437 | if (s->s3->tmp.new_compression == NULL) |
438 | s->session->compress_meth=0; | |
439 | else | |
440 | s->session->compress_meth= | |
441 | s->s3->tmp.new_compression->id; | |
09b6c2ef | 442 | #endif |
58964a49 | 443 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
444 | { |
445 | ret= -1; | |
446 | goto end; | |
447 | } | |
448 | ||
58964a49 | 449 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
450 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
451 | { | |
452 | ret= -1; | |
453 | goto end; | |
454 | } | |
455 | ||
456 | break; | |
457 | ||
458 | case SSL3_ST_CW_FINISHED_A: | |
459 | case SSL3_ST_CW_FINISHED_B: | |
460 | ret=ssl3_send_finished(s, | |
461 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
462 | s->method->ssl3_enc->client_finished_label, |
463 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
464 | if (ret <= 0) goto end; |
465 | s->state=SSL3_ST_CW_FLUSH; | |
466 | ||
467 | /* clear flags */ | |
468 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
469 | if (s->hit) | |
470 | { | |
471 | s->s3->tmp.next_state=SSL_ST_OK; | |
472 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
473 | { | |
474 | s->state=SSL_ST_OK; | |
475 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
476 | s->s3->delay_buf_pop_ret=0; | |
477 | } | |
478 | } | |
479 | else | |
480 | { | |
6434abbf DSH |
481 | #ifndef OPENSSL_NO_TLSEXT |
482 | /* Allow NewSessionTicket if ticket expected */ | |
483 | if (s->tlsext_ticket_expected) | |
484 | s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A; | |
485 | else | |
486 | #endif | |
487 | ||
d02b48c6 RE |
488 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; |
489 | } | |
490 | s->init_num=0; | |
491 | break; | |
492 | ||
6434abbf DSH |
493 | #ifndef OPENSSL_NO_TLSEXT |
494 | case SSL3_ST_CR_SESSION_TICKET_A: | |
495 | case SSL3_ST_CR_SESSION_TICKET_B: | |
496 | ret=ssl3_get_new_session_ticket(s); | |
446124a2 | 497 | if (ret <= 0) goto end; |
6434abbf DSH |
498 | s->state=SSL3_ST_CR_FINISHED_A; |
499 | s->init_num=0; | |
500 | break; | |
67c8e7f4 DSH |
501 | |
502 | case SSL3_ST_CR_CERT_STATUS_A: | |
503 | case SSL3_ST_CR_CERT_STATUS_B: | |
504 | ret=ssl3_get_cert_status(s); | |
505 | if (ret <= 0) goto end; | |
506 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
507 | s->init_num=0; | |
508 | break; | |
6434abbf DSH |
509 | #endif |
510 | ||
d02b48c6 RE |
511 | case SSL3_ST_CR_FINISHED_A: |
512 | case SSL3_ST_CR_FINISHED_B: | |
513 | ||
514 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, | |
58964a49 | 515 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
516 | if (ret <= 0) goto end; |
517 | ||
518 | if (s->hit) | |
519 | s->state=SSL3_ST_CW_CHANGE_A; | |
520 | else | |
521 | s->state=SSL_ST_OK; | |
522 | s->init_num=0; | |
523 | break; | |
524 | ||
525 | case SSL3_ST_CW_FLUSH: | |
526 | /* number of bytes to be flushed */ | |
527 | num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); | |
528 | if (num1 > 0) | |
529 | { | |
530 | s->rwstate=SSL_WRITING; | |
531 | num1=BIO_flush(s->wbio); | |
532 | if (num1 <= 0) { ret= -1; goto end; } | |
533 | s->rwstate=SSL_NOTHING; | |
534 | } | |
535 | ||
536 | s->state=s->s3->tmp.next_state; | |
537 | break; | |
538 | ||
539 | case SSL_ST_OK: | |
540 | /* clean a few things up */ | |
541 | ssl3_cleanup_key_block(s); | |
542 | ||
413c4f45 | 543 | if (s->init_buf != NULL) |
d02b48c6 | 544 | { |
413c4f45 MC |
545 | BUF_MEM_free(s->init_buf); |
546 | s->init_buf=NULL; | |
d02b48c6 | 547 | } |
413c4f45 MC |
548 | |
549 | /* If we are not 'joining' the last two packets, | |
550 | * remove the buffering now */ | |
551 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
552 | ssl_free_wbio_buffer(s); | |
553 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
554 | |
555 | s->init_num=0; | |
556 | s->new_session=0; | |
557 | ||
558 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 559 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
560 | |
561 | ret=1; | |
562 | /* s->server=0; */ | |
563 | s->handshake_func=ssl3_connect; | |
413c4f45 | 564 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
565 | |
566 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
567 | ||
568 | goto end; | |
dfeab068 | 569 | /* break; */ |
d02b48c6 RE |
570 | |
571 | default: | |
572 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
573 | ret= -1; | |
574 | goto end; | |
575 | /* break; */ | |
576 | } | |
577 | ||
578 | /* did we do anything */ | |
579 | if (!s->s3->tmp.reuse_message && !skip) | |
580 | { | |
58964a49 RE |
581 | if (s->debug) |
582 | { | |
583 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
584 | goto end; | |
585 | } | |
d02b48c6 RE |
586 | |
587 | if ((cb != NULL) && (s->state != state)) | |
588 | { | |
589 | new_state=s->state; | |
590 | s->state=state; | |
591 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
592 | s->state=new_state; | |
593 | } | |
594 | } | |
595 | skip=0; | |
596 | } | |
597 | end: | |
4d635a70 | 598 | s->in_handshake--; |
8d6ad9e3 RL |
599 | if (buf != NULL) |
600 | BUF_MEM_free(buf); | |
d02b48c6 RE |
601 | if (cb != NULL) |
602 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
d02b48c6 RE |
603 | return(ret); |
604 | } | |
605 | ||
606 | ||
36d16f8e | 607 | int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
608 | { |
609 | unsigned char *buf; | |
610 | unsigned char *p,*d; | |
09b6c2ef | 611 | int i; |
d02b48c6 | 612 | unsigned long Time,l; |
09b6c2ef DSH |
613 | #ifndef OPENSSL_NO_COMP |
614 | int j; | |
413c4f45 | 615 | SSL_COMP *comp; |
09b6c2ef | 616 | #endif |
d02b48c6 RE |
617 | |
618 | buf=(unsigned char *)s->init_buf->data; | |
619 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
620 | { | |
621 | if ((s->session == NULL) || | |
dfeab068 RE |
622 | (s->session->ssl_version != s->version) || |
623 | (s->session->not_resumable)) | |
d02b48c6 RE |
624 | { |
625 | if (!ssl_get_new_session(s,0)) | |
626 | goto err; | |
627 | } | |
628 | /* else use the pre-loaded session */ | |
629 | ||
630 | p=s->s3->client_random; | |
7bbcb2f6 | 631 | Time=(unsigned long)time(NULL); /* Time */ |
d02b48c6 | 632 | l2n(Time,p); |
7c7667b8 NL |
633 | if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0) |
634 | goto err; | |
d02b48c6 RE |
635 | |
636 | /* Do the message type and length last */ | |
637 | d=p= &(buf[4]); | |
638 | ||
58964a49 RE |
639 | *(p++)=s->version>>8; |
640 | *(p++)=s->version&0xff; | |
413c4f45 | 641 | s->client_version=s->version; |
d02b48c6 RE |
642 | |
643 | /* Random stuff */ | |
644 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
645 | p+=SSL3_RANDOM_SIZE; | |
646 | ||
647 | /* Session ID */ | |
648 | if (s->new_session) | |
649 | i=0; | |
650 | else | |
651 | i=s->session->session_id_length; | |
652 | *(p++)=i; | |
653 | if (i != 0) | |
654 | { | |
27545970 | 655 | if (i > (int)sizeof(s->session->session_id)) |
5574e0ed BM |
656 | { |
657 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
658 | goto err; | |
659 | } | |
d02b48c6 RE |
660 | memcpy(p,s->session->session_id,i); |
661 | p+=i; | |
662 | } | |
663 | ||
664 | /* Ciphers supported */ | |
c6c2e313 | 665 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0); |
d02b48c6 RE |
666 | if (i == 0) |
667 | { | |
668 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
669 | goto err; | |
670 | } | |
671 | s2n(i,p); | |
672 | p+=i; | |
673 | ||
dfeab068 | 674 | /* COMPRESSION */ |
09b6c2ef DSH |
675 | #ifdef OPENSSL_NO_COMP |
676 | *(p++)=1; | |
677 | #else | |
566dda07 DSH |
678 | |
679 | if ((s->options & SSL_OP_NO_COMPRESSION) | |
680 | || !s->ctx->comp_methods) | |
413c4f45 MC |
681 | j=0; |
682 | else | |
f73e07cf | 683 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
684 | *(p++)=1+j; |
685 | for (i=0; i<j; i++) | |
686 | { | |
f73e07cf | 687 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
688 | *(p++)=comp->id; |
689 | } | |
09b6c2ef | 690 | #endif |
413c4f45 | 691 | *(p++)=0; /* Add the NULL method */ |
761772d7 | 692 | |
ed3883d2 | 693 | #ifndef OPENSSL_NO_TLSEXT |
761772d7 | 694 | /* TLS extensions*/ |
36ca4ba6 BM |
695 | if (ssl_prepare_clienthello_tlsext(s) <= 0) |
696 | { | |
697 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT); | |
698 | goto err; | |
699 | } | |
f1fd4544 BM |
700 | if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL) |
701 | { | |
ed3883d2 BM |
702 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR); |
703 | goto err; | |
f1fd4544 | 704 | } |
ed3883d2 | 705 | #endif |
d02b48c6 RE |
706 | |
707 | l=(p-d); | |
708 | d=buf; | |
709 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
710 | l2n3(l,d); | |
711 | ||
712 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
713 | /* number of bytes to write */ | |
714 | s->init_num=p-buf; | |
715 | s->init_off=0; | |
716 | } | |
717 | ||
718 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
719 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
720 | err: | |
721 | return(-1); | |
722 | } | |
723 | ||
36d16f8e | 724 | int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 725 | { |
f73e07cf | 726 | STACK_OF(SSL_CIPHER) *sk; |
babb3798 | 727 | const SSL_CIPHER *c; |
d02b48c6 RE |
728 | unsigned char *p,*d; |
729 | int i,al,ok; | |
730 | unsigned int j; | |
731 | long n; | |
09b6c2ef | 732 | #ifndef OPENSSL_NO_COMP |
413c4f45 | 733 | SSL_COMP *comp; |
09b6c2ef | 734 | #endif |
d02b48c6 | 735 | |
36d16f8e | 736 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
737 | SSL3_ST_CR_SRVR_HELLO_A, |
738 | SSL3_ST_CR_SRVR_HELLO_B, | |
36d16f8e | 739 | -1, |
6434abbf | 740 | 20000, /* ?? */ |
d02b48c6 RE |
741 | &ok); |
742 | ||
743 | if (!ok) return((int)n); | |
36d16f8e | 744 | |
b452f433 | 745 | if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) |
36d16f8e BL |
746 | { |
747 | if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) | |
748 | { | |
749 | if ( s->d1->send_cookie == 0) | |
750 | { | |
751 | s->s3->tmp.reuse_message = 1; | |
752 | return 1; | |
753 | } | |
754 | else /* already sent a cookie */ | |
755 | { | |
756 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 757 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
758 | goto f_err; |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) | |
764 | { | |
765 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 766 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
767 | goto f_err; |
768 | } | |
769 | ||
48948d53 | 770 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 771 | |
58964a49 | 772 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
773 | { |
774 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
775 | s->version=(s->version&0xff00)|p[1]; |
776 | al=SSL_AD_PROTOCOL_VERSION; | |
777 | goto f_err; | |
d02b48c6 RE |
778 | } |
779 | p+=2; | |
780 | ||
781 | /* load the server hello data */ | |
782 | /* load the server random */ | |
783 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
784 | p+=SSL3_RANDOM_SIZE; | |
785 | ||
786 | /* get the session-id */ | |
787 | j= *(p++); | |
788 | ||
a4f53a1c | 789 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 790 | { |
a4f53a1c BM |
791 | al=SSL_AD_ILLEGAL_PARAMETER; |
792 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
793 | goto f_err; | |
d02b48c6 | 794 | } |
54a656ef | 795 | |
12bf56c0 DSH |
796 | #ifndef OPENSSL_NO_TLSEXT |
797 | /* check if we want to resume the session based on external pre-shared secret */ | |
798 | if (s->version >= TLS1_VERSION && s->tls_session_secret_cb) | |
799 | { | |
800 | SSL_CIPHER *pref_cipher=NULL; | |
801 | s->session->master_key_length=sizeof(s->session->master_key); | |
802 | if (s->tls_session_secret_cb(s, s->session->master_key, | |
803 | &s->session->master_key_length, | |
804 | NULL, &pref_cipher, | |
805 | s->tls_session_secret_cb_arg)) | |
806 | { | |
807 | s->session->cipher = pref_cipher ? | |
808 | pref_cipher : ssl_get_cipher_by_char(s, p+j); | |
809 | } | |
810 | } | |
811 | #endif /* OPENSSL_NO_TLSEXT */ | |
812 | ||
b4cadc6e BL |
813 | if (j != 0 && j == s->session->session_id_length |
814 | && memcmp(p,s->session->session_id,j) == 0) | |
815 | { | |
816 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
817 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
818 | { | |
a4f53a1c | 819 | /* actually a client application bug */ |
b4cadc6e BL |
820 | al=SSL_AD_ILLEGAL_PARAMETER; |
821 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
822 | goto f_err; | |
823 | } | |
824 | s->hit=1; | |
825 | } | |
58964a49 | 826 | else /* a miss or crap from the other end */ |
d02b48c6 | 827 | { |
58964a49 RE |
828 | /* If we were trying for session-id reuse, make a new |
829 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 830 | s->hit=0; |
58964a49 RE |
831 | if (s->session->session_id_length > 0) |
832 | { | |
833 | if (!ssl_get_new_session(s,0)) | |
834 | { | |
835 | al=SSL_AD_INTERNAL_ERROR; | |
836 | goto f_err; | |
837 | } | |
838 | } | |
839 | s->session->session_id_length=j; | |
840 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
841 | } |
842 | p+=j; | |
843 | c=ssl_get_cipher_by_char(s,p); | |
844 | if (c == NULL) | |
845 | { | |
846 | /* unknown cipher */ | |
58964a49 | 847 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
848 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
849 | goto f_err; | |
850 | } | |
851 | p+=ssl_put_cipher_by_char(s,NULL,NULL); | |
852 | ||
853 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 854 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
855 | if (i < 0) |
856 | { | |
857 | /* we did not say we would use this cipher */ | |
58964a49 | 858 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
859 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
860 | goto f_err; | |
861 | } | |
862 | ||
6a8afe22 LJ |
863 | /* Depending on the session caching (internal/external), the cipher |
864 | and/or cipher_id values may not be set. Make sure that | |
865 | cipher_id is set and use it for comparison. */ | |
866 | if (s->session->cipher) | |
867 | s->session->cipher_id = s->session->cipher->id; | |
c5662053 | 868 | if (s->hit && (s->session->cipher_id != c->id)) |
d02b48c6 | 869 | { |
58964a49 | 870 | if (!(s->options & |
d02b48c6 RE |
871 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
872 | { | |
58964a49 | 873 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
874 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
875 | goto f_err; | |
876 | } | |
877 | } | |
878 | s->s3->tmp.new_cipher=c; | |
6ba71a71 BL |
879 | if (!ssl3_digest_cached_records(s)) |
880 | goto f_err; | |
d02b48c6 RE |
881 | |
882 | /* lets get the compression algorithm */ | |
dfeab068 | 883 | /* COMPRESSION */ |
09b6c2ef DSH |
884 | #ifdef OPENSSL_NO_COMP |
885 | if (*(p++) != 0) | |
886 | { | |
887 | al=SSL_AD_ILLEGAL_PARAMETER; | |
888 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
889 | goto f_err; | |
890 | } | |
891 | #else | |
d02b48c6 | 892 | j= *(p++); |
566dda07 | 893 | if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION)) |
413c4f45 MC |
894 | comp=NULL; |
895 | else | |
896 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
897 | ||
898 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 899 | { |
58964a49 | 900 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
901 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
902 | goto f_err; | |
903 | } | |
413c4f45 MC |
904 | else |
905 | { | |
906 | s->s3->tmp.new_compression=comp; | |
907 | } | |
09b6c2ef | 908 | #endif |
761772d7 | 909 | |
ed3883d2 BM |
910 | #ifndef OPENSSL_NO_TLSEXT |
911 | /* TLS extensions*/ | |
912 | if (s->version > SSL3_VERSION) | |
f1fd4544 BM |
913 | { |
914 | if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al)) | |
915 | { | |
916 | /* 'al' set by ssl_parse_serverhello_tlsext */ | |
36ca4ba6 | 917 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT); |
ed3883d2 | 918 | goto f_err; |
f1fd4544 | 919 | } |
36ca4ba6 | 920 | if (ssl_check_serverhello_tlsext(s) <= 0) |
58ece833 | 921 | { |
a291745e | 922 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT); |
58ece833 BM |
923 | goto err; |
924 | } | |
ed3883d2 | 925 | } |
ed3883d2 | 926 | #endif |
d02b48c6 RE |
927 | |
928 | if (p != (d+n)) | |
929 | { | |
930 | /* wrong packet length */ | |
58964a49 | 931 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
932 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
933 | goto err; | |
934 | } | |
935 | ||
936 | return(1); | |
937 | f_err: | |
938 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
939 | err: | |
940 | return(-1); | |
941 | } | |
942 | ||
36d16f8e | 943 | int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
944 | { |
945 | int al,i,ok,ret= -1; | |
946 | unsigned long n,nc,llen,l; | |
947 | X509 *x=NULL; | |
875a644a RL |
948 | const unsigned char *q,*p; |
949 | unsigned char *d; | |
f73e07cf | 950 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 951 | SESS_CERT *sc; |
d02b48c6 | 952 | EVP_PKEY *pkey=NULL; |
57376542 | 953 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 | 954 | |
36d16f8e | 955 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
956 | SSL3_ST_CR_CERT_A, |
957 | SSL3_ST_CR_CERT_B, | |
958 | -1, | |
c0f5dd07 | 959 | s->max_cert_list, |
d02b48c6 RE |
960 | &ok); |
961 | ||
962 | if (!ok) return((int)n); | |
963 | ||
964 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) | |
965 | { | |
966 | s->s3->tmp.reuse_message=1; | |
967 | return(1); | |
968 | } | |
969 | ||
970 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
971 | { | |
58964a49 | 972 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
973 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
974 | goto f_err; | |
975 | } | |
875a644a | 976 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 977 | |
f73e07cf | 978 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
979 | { |
980 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
981 | goto err; | |
982 | } | |
983 | ||
984 | n2l3(p,llen); | |
985 | if (llen+3 != n) | |
986 | { | |
58964a49 | 987 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
988 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
989 | goto f_err; | |
990 | } | |
991 | for (nc=0; nc<llen; ) | |
992 | { | |
993 | n2l3(p,l); | |
994 | if ((l+nc+3) > llen) | |
995 | { | |
58964a49 | 996 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
997 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
998 | goto f_err; | |
999 | } | |
1000 | ||
1001 | q=p; | |
1002 | x=d2i_X509(NULL,&q,l); | |
1003 | if (x == NULL) | |
1004 | { | |
58964a49 | 1005 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
1006 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
1007 | goto f_err; | |
1008 | } | |
1009 | if (q != (p+l)) | |
1010 | { | |
58964a49 | 1011 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1012 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1013 | goto f_err; | |
1014 | } | |
f73e07cf | 1015 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
1016 | { |
1017 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1018 | goto err; | |
1019 | } | |
1020 | x=NULL; | |
1021 | nc+=l+3; | |
1022 | p=q; | |
1023 | } | |
1024 | ||
1025 | i=ssl_verify_cert_chain(s,sk); | |
bab53405 | 1026 | if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0) |
82d5d46c | 1027 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 BM |
1028 | && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
1029 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
82d5d46c | 1030 | #endif /* OPENSSL_NO_KRB5 */ |
52b8dad8 | 1031 | ) |
d02b48c6 RE |
1032 | { |
1033 | al=ssl_verify_alarm_type(s->verify_result); | |
1034 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
1035 | goto f_err; | |
1036 | } | |
1fab73ac | 1037 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 1038 | |
b56bce4f BM |
1039 | sc=ssl_sess_cert_new(); |
1040 | if (sc == NULL) goto err; | |
d02b48c6 | 1041 | |
b56bce4f BM |
1042 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
1043 | s->session->sess_cert=sc; | |
d02b48c6 | 1044 | |
b56bce4f | 1045 | sc->cert_chain=sk; |
98e04f9e BM |
1046 | /* Inconsistency alert: cert_chain does include the peer's |
1047 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 1048 | x=sk_X509_value(sk,0); |
d02b48c6 | 1049 | sk=NULL; |
2a1ef754 | 1050 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
1051 | |
1052 | pkey=X509_get_pubkey(x); | |
1053 | ||
57376542 | 1054 | /* VRS: allow null cert if auth == KRB5 */ |
52b8dad8 BM |
1055 | need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
1056 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
1057 | ? 0 : 1; | |
f9b3bff6 RL |
1058 | |
1059 | #ifdef KSSL_DEBUG | |
6343829a | 1060 | printf("pkey,x = %p, %p\n", pkey,x); |
f9b3bff6 | 1061 | printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); |
52b8dad8 BM |
1062 | printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name, |
1063 | s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert); | |
f9b3bff6 RL |
1064 | #endif /* KSSL_DEBUG */ |
1065 | ||
2a1ef754 | 1066 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
1067 | { |
1068 | x=NULL; | |
1069 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
1070 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
1071 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
1072 | goto f_err; |
1073 | } | |
1074 | ||
1075 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 1076 | if (need_cert && i < 0) |
d02b48c6 RE |
1077 | { |
1078 | x=NULL; | |
1079 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
1080 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
1081 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
1082 | goto f_err; |
1083 | } | |
1084 | ||
57376542 BM |
1085 | if (need_cert) |
1086 | { | |
1087 | sc->peer_cert_type=i; | |
1088 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1089 | /* Why would the following ever happen? | |
1090 | * We just created sc a couple of lines ago. */ | |
1091 | if (sc->peer_pkeys[i].x509 != NULL) | |
1092 | X509_free(sc->peer_pkeys[i].x509); | |
1093 | sc->peer_pkeys[i].x509=x; | |
1094 | sc->peer_key= &(sc->peer_pkeys[i]); | |
1095 | ||
1096 | if (s->session->peer != NULL) | |
1097 | X509_free(s->session->peer); | |
1098 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1099 | s->session->peer=x; | |
1100 | } | |
1101 | else | |
1102 | { | |
1103 | sc->peer_cert_type=i; | |
1104 | sc->peer_key= NULL; | |
1105 | ||
1106 | if (s->session->peer != NULL) | |
1107 | X509_free(s->session->peer); | |
1108 | s->session->peer=NULL; | |
1109 | } | |
0dd2254d | 1110 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
1111 | |
1112 | x=NULL; | |
1113 | ret=1; | |
1114 | ||
1115 | if (0) | |
1116 | { | |
1117 | f_err: | |
1118 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1119 | } | |
1120 | err: | |
a8236c8c DSH |
1121 | EVP_PKEY_free(pkey); |
1122 | X509_free(x); | |
f73e07cf | 1123 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
1124 | return(ret); |
1125 | } | |
1126 | ||
36d16f8e | 1127 | int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 1128 | { |
bc36ee62 | 1129 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1130 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
1131 | #endif | |
1132 | EVP_MD_CTX md_ctx; | |
1133 | unsigned char *param,*p; | |
1134 | int al,i,j,param_len,ok; | |
52b8dad8 | 1135 | long n,alg_k,alg_a; |
d02b48c6 | 1136 | EVP_PKEY *pkey=NULL; |
bc36ee62 | 1137 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1138 | RSA *rsa=NULL; |
79df9d62 | 1139 | #endif |
bc36ee62 | 1140 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 1141 | DH *dh=NULL; |
58964a49 | 1142 | #endif |
ea262260 BM |
1143 | #ifndef OPENSSL_NO_ECDH |
1144 | EC_KEY *ecdh = NULL; | |
1145 | BN_CTX *bn_ctx = NULL; | |
1146 | EC_POINT *srvr_ecpoint = NULL; | |
1147 | int curve_nid = 0; | |
1148 | int encoded_pt_len = 0; | |
1149 | #endif | |
d02b48c6 | 1150 | |
37a7cd1a BM |
1151 | /* use same message size as in ssl3_get_certificate_request() |
1152 | * as ServerKeyExchange message may be skipped */ | |
36d16f8e | 1153 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1154 | SSL3_ST_CR_KEY_EXCH_A, |
1155 | SSL3_ST_CR_KEY_EXCH_B, | |
1156 | -1, | |
c0f5dd07 | 1157 | s->max_cert_list, |
d02b48c6 | 1158 | &ok); |
d02b48c6 RE |
1159 | if (!ok) return((int)n); |
1160 | ||
1161 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
1162 | { | |
ddac1974 NL |
1163 | #ifndef OPENSSL_NO_PSK |
1164 | /* In plain PSK ciphersuite, ServerKeyExchange can be | |
1165 | omitted if no identity hint is sent. Set | |
1166 | session->sess_cert anyway to avoid problems | |
1167 | later.*/ | |
52b8dad8 | 1168 | if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK) |
ddac1974 NL |
1169 | { |
1170 | s->session->sess_cert=ssl_sess_cert_new(); | |
1171 | if (s->ctx->psk_identity_hint) | |
1172 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1173 | s->ctx->psk_identity_hint = NULL; | |
1174 | } | |
1175 | #endif | |
d02b48c6 RE |
1176 | s->s3->tmp.reuse_message=1; |
1177 | return(1); | |
1178 | } | |
1179 | ||
48948d53 | 1180 | param=p=(unsigned char *)s->init_msg; |
9d5cceac | 1181 | if (s->session->sess_cert != NULL) |
d02b48c6 | 1182 | { |
bc36ee62 | 1183 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1184 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1185 | { |
b56bce4f BM |
1186 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1187 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1188 | } |
1189 | #endif | |
bc36ee62 | 1190 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1191 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1192 | { |
b56bce4f BM |
1193 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1194 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1195 | } |
ea262260 BM |
1196 | #endif |
1197 | #ifndef OPENSSL_NO_ECDH | |
1198 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1199 | { | |
1200 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1201 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1202 | } | |
d02b48c6 RE |
1203 | #endif |
1204 | } | |
1205 | else | |
1206 | { | |
b56bce4f | 1207 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1208 | } |
1209 | ||
1210 | param_len=0; | |
52b8dad8 BM |
1211 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
1212 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
dbad1690 | 1213 | EVP_MD_CTX_init(&md_ctx); |
d02b48c6 | 1214 | |
ddac1974 | 1215 | #ifndef OPENSSL_NO_PSK |
52b8dad8 BM |
1216 | if (alg_k & SSL_kPSK) |
1217 | { | |
ddac1974 NL |
1218 | char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1]; |
1219 | ||
1220 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1221 | n2s(p,i); | |
1222 | param_len=i+2; | |
1223 | /* Store PSK identity hint for later use, hint is used | |
1224 | * in ssl3_send_client_key_exchange. Assume that the | |
1225 | * maximum length of a PSK identity hint can be as | |
1226 | * long as the maximum length of a PSK identity. */ | |
1227 | if (i > PSK_MAX_IDENTITY_LEN) | |
1228 | { | |
1229 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1230 | SSL_R_DATA_LENGTH_TOO_LONG); | |
1231 | goto f_err; | |
1232 | } | |
1233 | if (param_len > n) | |
1234 | { | |
1235 | al=SSL_AD_DECODE_ERROR; | |
1236 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1237 | SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH); | |
1238 | goto f_err; | |
1239 | } | |
1240 | /* If received PSK identity hint contains NULL | |
1241 | * characters, the hint is truncated from the first | |
1242 | * NULL. p may not be ending with NULL, so create a | |
1243 | * NULL-terminated string. */ | |
1244 | memcpy(tmp_id_hint, p, i); | |
1245 | memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i); | |
1246 | if (s->ctx->psk_identity_hint != NULL) | |
1247 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1248 | s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint); | |
1249 | if (s->ctx->psk_identity_hint == NULL) | |
1250 | { | |
1251 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); | |
1252 | goto f_err; | |
52b8dad8 | 1253 | } |
ddac1974 NL |
1254 | |
1255 | p+=i; | |
1256 | n-=param_len; | |
1257 | } | |
1258 | else | |
1259 | #endif /* !OPENSSL_NO_PSK */ | |
bc36ee62 | 1260 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1261 | if (alg_k & SSL_kRSA) |
d02b48c6 RE |
1262 | { |
1263 | if ((rsa=RSA_new()) == NULL) | |
1264 | { | |
1265 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1266 | goto err; | |
1267 | } | |
1268 | n2s(p,i); | |
1269 | param_len=i+2; | |
1270 | if (param_len > n) | |
1271 | { | |
58964a49 | 1272 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1273 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1274 | goto f_err; | |
1275 | } | |
1276 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
1277 | { | |
1278 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1279 | goto err; | |
1280 | } | |
1281 | p+=i; | |
1282 | ||
1283 | n2s(p,i); | |
1284 | param_len+=i+2; | |
1285 | if (param_len > n) | |
1286 | { | |
58964a49 | 1287 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1288 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1289 | goto f_err; | |
1290 | } | |
1291 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
1292 | { | |
1293 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1294 | goto err; | |
1295 | } | |
1296 | p+=i; | |
1297 | n-=param_len; | |
1298 | ||
d02b48c6 | 1299 | /* this should be because we are using an export cipher */ |
52b8dad8 | 1300 | if (alg_a & SSL_aRSA) |
b56bce4f | 1301 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1302 | else |
1303 | { | |
5277d7cb | 1304 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1305 | goto err; |
1306 | } | |
b56bce4f | 1307 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1308 | rsa=NULL; |
d02b48c6 | 1309 | } |
bc36ee62 | 1310 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1311 | if (0) |
1312 | ; | |
d02b48c6 | 1313 | #endif |
bc36ee62 | 1314 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 1315 | else if (alg_k & SSL_kEDH) |
d02b48c6 RE |
1316 | { |
1317 | if ((dh=DH_new()) == NULL) | |
1318 | { | |
1319 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1320 | goto err; | |
1321 | } | |
1322 | n2s(p,i); | |
1323 | param_len=i+2; | |
1324 | if (param_len > n) | |
1325 | { | |
58964a49 | 1326 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1327 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1328 | goto f_err; | |
1329 | } | |
1330 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
1331 | { | |
1332 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1333 | goto err; | |
1334 | } | |
1335 | p+=i; | |
1336 | ||
1337 | n2s(p,i); | |
1338 | param_len+=i+2; | |
1339 | if (param_len > n) | |
1340 | { | |
58964a49 | 1341 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1342 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1343 | goto f_err; | |
1344 | } | |
1345 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
1346 | { | |
1347 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1348 | goto err; | |
1349 | } | |
1350 | p+=i; | |
1351 | ||
1352 | n2s(p,i); | |
1353 | param_len+=i+2; | |
1354 | if (param_len > n) | |
1355 | { | |
58964a49 | 1356 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1357 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1358 | goto f_err; | |
1359 | } | |
1360 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
1361 | { | |
1362 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1363 | goto err; | |
1364 | } | |
1365 | p+=i; | |
1366 | n-=param_len; | |
1367 | ||
bc36ee62 | 1368 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1369 | if (alg_a & SSL_aRSA) |
b56bce4f | 1370 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1371 | #else |
1372 | if (0) | |
1373 | ; | |
d02b48c6 | 1374 | #endif |
bc36ee62 | 1375 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 1376 | else if (alg_a & SSL_aDSS) |
b56bce4f | 1377 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1378 | #endif |
1379 | /* else anonymous DH, so no certificate or pkey. */ | |
1380 | ||
b56bce4f | 1381 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1382 | dh=NULL; |
d02b48c6 | 1383 | } |
52b8dad8 | 1384 | else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd)) |
d02b48c6 | 1385 | { |
58964a49 | 1386 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1387 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1388 | goto f_err; | |
1389 | } | |
bc36ee62 | 1390 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1391 | |
1392 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 1393 | else if (alg_k & SSL_kEECDH) |
ea262260 | 1394 | { |
9dd84053 NL |
1395 | EC_GROUP *ngroup; |
1396 | const EC_GROUP *group; | |
1397 | ||
ea262260 BM |
1398 | if ((ecdh=EC_KEY_new()) == NULL) |
1399 | { | |
1400 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1401 | goto err; | |
1402 | } | |
1403 | ||
1404 | /* Extract elliptic curve parameters and the | |
1405 | * server's ephemeral ECDH public key. | |
1406 | * Keep accumulating lengths of various components in | |
1407 | * param_len and make sure it never exceeds n. | |
1408 | */ | |
1409 | ||
1410 | /* XXX: For now we only support named (not generic) curves | |
d56349a2 | 1411 | * and the ECParameters in this case is just three bytes. |
ea262260 | 1412 | */ |
d56349a2 | 1413 | param_len=3; |
ea262260 BM |
1414 | if ((param_len > n) || |
1415 | (*p != NAMED_CURVE_TYPE) || | |
33273721 | 1416 | ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)) |
ea262260 BM |
1417 | { |
1418 | al=SSL_AD_INTERNAL_ERROR; | |
1419 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1420 | goto f_err; | |
1421 | } | |
1422 | ||
9dd84053 NL |
1423 | ngroup = EC_GROUP_new_by_curve_name(curve_nid); |
1424 | if (ngroup == NULL) | |
1425 | { | |
1426 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1427 | goto err; | |
1428 | } | |
1429 | if (EC_KEY_set_group(ecdh, ngroup) == 0) | |
ea262260 BM |
1430 | { |
1431 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1432 | goto err; | |
1433 | } | |
9dd84053 NL |
1434 | EC_GROUP_free(ngroup); |
1435 | ||
1436 | group = EC_KEY_get0_group(ecdh); | |
ea262260 BM |
1437 | |
1438 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
9dd84053 | 1439 | (EC_GROUP_get_degree(group) > 163)) |
ea262260 BM |
1440 | { |
1441 | al=SSL_AD_EXPORT_RESTRICTION; | |
1442 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1443 | goto f_err; | |
1444 | } | |
1445 | ||
d56349a2 | 1446 | p+=3; |
ea262260 BM |
1447 | |
1448 | /* Next, get the encoded ECPoint */ | |
9dd84053 | 1449 | if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) || |
ea262260 BM |
1450 | ((bn_ctx = BN_CTX_new()) == NULL)) |
1451 | { | |
1452 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1453 | goto err; | |
1454 | } | |
1455 | ||
1456 | encoded_pt_len = *p; /* length of encoded point */ | |
1457 | p+=1; | |
1458 | param_len += (1 + encoded_pt_len); | |
1459 | if ((param_len > n) || | |
9dd84053 | 1460 | (EC_POINT_oct2point(group, srvr_ecpoint, |
ea262260 BM |
1461 | p, encoded_pt_len, bn_ctx) == 0)) |
1462 | { | |
1463 | al=SSL_AD_DECODE_ERROR; | |
1464 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); | |
1465 | goto f_err; | |
1466 | } | |
1467 | ||
1468 | n-=param_len; | |
1469 | p+=encoded_pt_len; | |
1470 | ||
1471 | /* The ECC/TLS specification does not mention | |
1472 | * the use of DSA to sign ECParameters in the server | |
1473 | * key exchange message. We do support RSA and ECDSA. | |
1474 | */ | |
1475 | if (0) ; | |
1476 | #ifndef OPENSSL_NO_RSA | |
52b8dad8 | 1477 | else if (alg_a & SSL_aRSA) |
ea262260 BM |
1478 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
1479 | #endif | |
1480 | #ifndef OPENSSL_NO_ECDSA | |
52b8dad8 | 1481 | else if (alg_a & SSL_aECDSA) |
ea262260 BM |
1482 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); |
1483 | #endif | |
1484 | /* else anonymous ECDH, so no certificate or pkey. */ | |
9dd84053 | 1485 | EC_KEY_set_public_key(ecdh, srvr_ecpoint); |
ea262260 BM |
1486 | s->session->sess_cert->peer_ecdh_tmp=ecdh; |
1487 | ecdh=NULL; | |
1488 | BN_CTX_free(bn_ctx); | |
9dd84053 | 1489 | EC_POINT_free(srvr_ecpoint); |
ea262260 BM |
1490 | srvr_ecpoint = NULL; |
1491 | } | |
52b8dad8 | 1492 | else if (alg_k) |
ea262260 BM |
1493 | { |
1494 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1495 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1496 | goto f_err; | |
1497 | } | |
1498 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 | 1499 | |
d02b48c6 RE |
1500 | |
1501 | /* p points to the next byte, there are 'n' bytes left */ | |
1502 | ||
d02b48c6 RE |
1503 | /* if it was signed, check the signature */ |
1504 | if (pkey != NULL) | |
1505 | { | |
1506 | n2s(p,i); | |
1507 | n-=2; | |
1508 | j=EVP_PKEY_size(pkey); | |
1509 | ||
1510 | if ((i != n) || (n > j) || (n <= 0)) | |
1511 | { | |
1512 | /* wrong packet length */ | |
58964a49 | 1513 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1514 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1515 | goto f_err; |
d02b48c6 RE |
1516 | } |
1517 | ||
bc36ee62 | 1518 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1519 | if (pkey->type == EVP_PKEY_RSA) |
1520 | { | |
1521 | int num; | |
1522 | ||
1523 | j=0; | |
1524 | q=md_buf; | |
1525 | for (num=2; num > 0; num--) | |
1526 | { | |
20d2186c DSH |
1527 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1528 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1529 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1530 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1531 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
20d2186c | 1532 | EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i); |
d02b48c6 RE |
1533 | q+=i; |
1534 | j+=i; | |
1535 | } | |
1c80019a DSH |
1536 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1537 | pkey->pkey.rsa); | |
1538 | if (i < 0) | |
d02b48c6 | 1539 | { |
58964a49 | 1540 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1541 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1542 | goto f_err; | |
1543 | } | |
1c80019a | 1544 | if (i == 0) |
d02b48c6 RE |
1545 | { |
1546 | /* bad signature */ | |
58964a49 | 1547 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1548 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1549 | goto f_err; | |
1550 | } | |
1551 | } | |
1552 | else | |
1553 | #endif | |
bc36ee62 | 1554 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
1555 | if (pkey->type == EVP_PKEY_DSA) |
1556 | { | |
1557 | /* lets do DSS */ | |
20d2186c | 1558 | EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL); |
d02b48c6 RE |
1559 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1560 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1561 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
bab53405 | 1562 | if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0) |
d02b48c6 RE |
1563 | { |
1564 | /* bad signature */ | |
58964a49 | 1565 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1566 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1567 | goto f_err; | |
1568 | } | |
1569 | } | |
1570 | else | |
ea262260 BM |
1571 | #endif |
1572 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 1573 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
1574 | { |
1575 | /* let's do ECDSA */ | |
1576 | EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL); | |
1577 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1578 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1579 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
bab53405 | 1580 | if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0) |
ea262260 BM |
1581 | { |
1582 | /* bad signature */ | |
1583 | al=SSL_AD_DECRYPT_ERROR; | |
1584 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1585 | goto f_err; | |
1586 | } | |
1587 | } | |
1588 | else | |
d02b48c6 RE |
1589 | #endif |
1590 | { | |
5277d7cb | 1591 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1592 | goto err; |
1593 | } | |
1594 | } | |
1595 | else | |
1596 | { | |
52b8dad8 | 1597 | if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK)) |
ddac1974 | 1598 | /* aNULL or kPSK do not need public keys */ |
d02b48c6 | 1599 | { |
5277d7cb | 1600 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1601 | goto err; |
1602 | } | |
ddac1974 | 1603 | /* still data left over */ |
d02b48c6 RE |
1604 | if (n != 0) |
1605 | { | |
58964a49 | 1606 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1607 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1608 | goto f_err; | |
1609 | } | |
1610 | } | |
a8236c8c | 1611 | EVP_PKEY_free(pkey); |
dbad1690 | 1612 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1613 | return(1); |
1614 | f_err: | |
1615 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1616 | err: | |
a8236c8c | 1617 | EVP_PKEY_free(pkey); |
bc36ee62 | 1618 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1619 | if (rsa != NULL) |
1620 | RSA_free(rsa); | |
1621 | #endif | |
bc36ee62 | 1622 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1623 | if (dh != NULL) |
1624 | DH_free(dh); | |
ea262260 BM |
1625 | #endif |
1626 | #ifndef OPENSSL_NO_ECDH | |
1627 | BN_CTX_free(bn_ctx); | |
1628 | EC_POINT_free(srvr_ecpoint); | |
1629 | if (ecdh != NULL) | |
1630 | EC_KEY_free(ecdh); | |
6b521df3 | 1631 | #endif |
dbad1690 | 1632 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1633 | return(-1); |
1634 | } | |
1635 | ||
36d16f8e | 1636 | int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1637 | { |
1638 | int ok,ret=0; | |
58964a49 RE |
1639 | unsigned long n,nc,l; |
1640 | unsigned int llen,ctype_num,i; | |
d02b48c6 | 1641 | X509_NAME *xn=NULL; |
875a644a RL |
1642 | const unsigned char *p,*q; |
1643 | unsigned char *d; | |
f73e07cf | 1644 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 | 1645 | |
36d16f8e | 1646 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1647 | SSL3_ST_CR_CERT_REQ_A, |
1648 | SSL3_ST_CR_CERT_REQ_B, | |
1649 | -1, | |
c0f5dd07 | 1650 | s->max_cert_list, |
d02b48c6 RE |
1651 | &ok); |
1652 | ||
1653 | if (!ok) return((int)n); | |
1654 | ||
1655 | s->s3->tmp.cert_req=0; | |
1656 | ||
1657 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1658 | { | |
1659 | s->s3->tmp.reuse_message=1; | |
1660 | return(1); | |
1661 | } | |
1662 | ||
1663 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1664 | { | |
58964a49 | 1665 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1666 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1667 | goto err; | |
1668 | } | |
1669 | ||
58964a49 RE |
1670 | /* TLS does not like anon-DH with client cert */ |
1671 | if (s->version > SSL3_VERSION) | |
1672 | { | |
52b8dad8 | 1673 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) |
58964a49 RE |
1674 | { |
1675 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1676 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1677 | goto err; | |
1678 | } | |
1679 | } | |
1680 | ||
875a644a | 1681 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1682 | |
f73e07cf | 1683 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1684 | { |
1685 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1686 | goto err; | |
1687 | } | |
1688 | ||
1689 | /* get the certificate types */ | |
1690 | ctype_num= *(p++); | |
1691 | if (ctype_num > SSL3_CT_NUMBER) | |
1692 | ctype_num=SSL3_CT_NUMBER; | |
1693 | for (i=0; i<ctype_num; i++) | |
1694 | s->s3->tmp.ctype[i]= p[i]; | |
1695 | p+=ctype_num; | |
1696 | ||
1697 | /* get the CA RDNs */ | |
1698 | n2s(p,llen); | |
dfeab068 RE |
1699 | #if 0 |
1700 | { | |
1701 | FILE *out; | |
1702 | out=fopen("/tmp/vsign.der","w"); | |
1703 | fwrite(p,1,llen,out); | |
1704 | fclose(out); | |
1705 | } | |
1706 | #endif | |
1707 | ||
d02b48c6 RE |
1708 | if ((llen+ctype_num+2+1) != n) |
1709 | { | |
58964a49 | 1710 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1711 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1712 | goto err; | |
1713 | } | |
1714 | ||
1715 | for (nc=0; nc<llen; ) | |
1716 | { | |
1717 | n2s(p,l); | |
1718 | if ((l+nc+2) > llen) | |
1719 | { | |
58964a49 | 1720 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 1721 | goto cont; /* netscape bugs */ |
58964a49 | 1722 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1723 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
1724 | goto err; | |
1725 | } | |
1726 | ||
1727 | q=p; | |
1728 | ||
1729 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
1730 | { | |
657e60fa | 1731 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 1732 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
1733 | goto cont; |
1734 | else | |
1735 | { | |
58964a49 | 1736 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1737 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
1738 | goto err; | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | if (q != (p+l)) | |
1743 | { | |
58964a49 | 1744 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1745 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
1746 | goto err; | |
1747 | } | |
f73e07cf | 1748 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
1749 | { |
1750 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1751 | goto err; | |
1752 | } | |
1753 | ||
1754 | p+=l; | |
1755 | nc+=l+2; | |
1756 | } | |
1757 | ||
1758 | if (0) | |
1759 | { | |
1760 | cont: | |
1761 | ERR_clear_error(); | |
1762 | } | |
1763 | ||
657e60fa | 1764 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
1765 | s->s3->tmp.cert_req=1; |
1766 | s->s3->tmp.ctype_num=ctype_num; | |
1767 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 1768 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
1769 | s->s3->tmp.ca_names=ca_sk; |
1770 | ca_sk=NULL; | |
1771 | ||
1772 | ret=1; | |
1773 | err: | |
f73e07cf | 1774 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
1775 | return(ret); |
1776 | } | |
1777 | ||
ccd86b68 | 1778 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
1779 | { |
1780 | return(X509_NAME_cmp(*a,*b)); | |
1781 | } | |
6434abbf DSH |
1782 | #ifndef OPENSSL_NO_TLSEXT |
1783 | int ssl3_get_new_session_ticket(SSL *s) | |
1784 | { | |
1785 | int ok,al,ret=0, ticklen; | |
1786 | long n; | |
1787 | const unsigned char *p; | |
1788 | unsigned char *d; | |
1789 | ||
1790 | n=s->method->ssl_get_message(s, | |
1791 | SSL3_ST_CR_SESSION_TICKET_A, | |
1792 | SSL3_ST_CR_SESSION_TICKET_B, | |
1793 | -1, | |
1794 | 16384, | |
1795 | &ok); | |
1796 | ||
1797 | if (!ok) | |
1798 | return((int)n); | |
1799 | ||
1800 | if (s->s3->tmp.message_type == SSL3_MT_FINISHED) | |
1801 | { | |
1802 | s->s3->tmp.reuse_message=1; | |
1803 | return(1); | |
1804 | } | |
1805 | if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET) | |
1806 | { | |
1807 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1808 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE); | |
1809 | goto f_err; | |
1810 | } | |
1811 | if (n < 6) | |
1812 | { | |
1813 | /* need at least ticket_lifetime_hint + ticket length */ | |
1814 | al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR; | |
1815 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); | |
1816 | goto f_err; | |
1817 | } | |
1818 | p=d=(unsigned char *)s->init_msg; | |
1819 | n2l(p, s->session->tlsext_tick_lifetime_hint); | |
1820 | n2s(p, ticklen); | |
1821 | /* ticket_lifetime_hint + ticket_length + ticket */ | |
1822 | if (ticklen + 6 != n) | |
1823 | { | |
1824 | al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR; | |
761772d7 | 1825 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); |
6434abbf DSH |
1826 | goto f_err; |
1827 | } | |
1828 | if (s->session->tlsext_tick) | |
1829 | { | |
1830 | OPENSSL_free(s->session->tlsext_tick); | |
1831 | s->session->tlsext_ticklen = 0; | |
1832 | } | |
1833 | s->session->tlsext_tick = OPENSSL_malloc(ticklen); | |
1834 | if (!s->session->tlsext_tick) | |
1835 | { | |
761772d7 | 1836 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE); |
6434abbf DSH |
1837 | goto err; |
1838 | } | |
1839 | memcpy(s->session->tlsext_tick, p, ticklen); | |
1840 | s->session->tlsext_ticklen = ticklen; | |
1841 | ||
1842 | ret=1; | |
1843 | return(ret); | |
1844 | f_err: | |
1845 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1846 | err: | |
1847 | return(-1); | |
1848 | } | |
67c8e7f4 DSH |
1849 | |
1850 | int ssl3_get_cert_status(SSL *s) | |
1851 | { | |
1852 | int ok, al; | |
aff686df | 1853 | unsigned long resplen,n; |
67c8e7f4 DSH |
1854 | const unsigned char *p; |
1855 | ||
1856 | n=s->method->ssl_get_message(s, | |
1857 | SSL3_ST_CR_CERT_STATUS_A, | |
1858 | SSL3_ST_CR_CERT_STATUS_B, | |
1859 | SSL3_MT_CERTIFICATE_STATUS, | |
1860 | 16384, | |
1861 | &ok); | |
1862 | ||
1863 | if (!ok) return((int)n); | |
1864 | if (n < 4) | |
1865 | { | |
1866 | /* need at least status type + length */ | |
1867 | al = SSL_AD_DECODE_ERROR; | |
1868 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); | |
1869 | goto f_err; | |
1870 | } | |
1871 | p = (unsigned char *)s->init_msg; | |
1872 | if (*p++ != TLSEXT_STATUSTYPE_ocsp) | |
1873 | { | |
1874 | al = SSL_AD_DECODE_ERROR; | |
1875 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE); | |
1876 | goto f_err; | |
1877 | } | |
1878 | n2l3(p, resplen); | |
1879 | if (resplen + 4 != n) | |
1880 | { | |
1881 | al = SSL_AD_DECODE_ERROR; | |
1882 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); | |
1883 | goto f_err; | |
1884 | } | |
1885 | if (s->tlsext_ocsp_resp) | |
1886 | OPENSSL_free(s->tlsext_ocsp_resp); | |
1887 | s->tlsext_ocsp_resp = BUF_memdup(p, resplen); | |
1888 | if (!s->tlsext_ocsp_resp) | |
1889 | { | |
1890 | al = SSL_AD_INTERNAL_ERROR; | |
1891 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE); | |
1892 | goto f_err; | |
1893 | } | |
1894 | s->tlsext_ocsp_resplen = resplen; | |
1895 | if (s->ctx->tlsext_status_cb) | |
1896 | { | |
1897 | int ret; | |
1898 | ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg); | |
1899 | if (ret == 0) | |
1900 | { | |
1901 | al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE; | |
1902 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE); | |
1903 | goto f_err; | |
1904 | } | |
1905 | if (ret < 0) | |
1906 | { | |
1907 | al = SSL_AD_INTERNAL_ERROR; | |
1908 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE); | |
1909 | goto f_err; | |
1910 | } | |
1911 | } | |
1912 | return 1; | |
1913 | f_err: | |
1914 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1915 | return(-1); | |
1916 | } | |
6434abbf | 1917 | #endif |
d02b48c6 | 1918 | |
36d16f8e | 1919 | int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
1920 | { |
1921 | int ok,ret=0; | |
1922 | long n; | |
1923 | ||
36d16f8e | 1924 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1925 | SSL3_ST_CR_SRVR_DONE_A, |
1926 | SSL3_ST_CR_SRVR_DONE_B, | |
1927 | SSL3_MT_SERVER_DONE, | |
1928 | 30, /* should be very small, like 0 :-) */ | |
1929 | &ok); | |
1930 | ||
1931 | if (!ok) return((int)n); | |
1932 | if (n > 0) | |
1933 | { | |
1934 | /* should contain no data */ | |
58964a49 | 1935 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 1936 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 1937 | return -1; |
d02b48c6 RE |
1938 | } |
1939 | ret=1; | |
1940 | return(ret); | |
1941 | } | |
1942 | ||
176f31dd | 1943 | |
36d16f8e | 1944 | int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 1945 | { |
79df9d62 | 1946 | unsigned char *p,*d; |
d02b48c6 | 1947 | int n; |
52b8dad8 | 1948 | unsigned long alg_k; |
bc36ee62 | 1949 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 1950 | unsigned char *q; |
d02b48c6 | 1951 | EVP_PKEY *pkey=NULL; |
79df9d62 | 1952 | #endif |
bc36ee62 | 1953 | #ifndef OPENSSL_NO_KRB5 |
57376542 | 1954 | KSSL_ERR kssl_err; |
bc36ee62 | 1955 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
1956 | #ifndef OPENSSL_NO_ECDH |
1957 | EC_KEY *clnt_ecdh = NULL; | |
9dd84053 | 1958 | const EC_POINT *srvr_ecpoint = NULL; |
ea262260 BM |
1959 | EVP_PKEY *srvr_pub_pkey = NULL; |
1960 | unsigned char *encodedPoint = NULL; | |
1961 | int encoded_pt_len = 0; | |
1962 | BN_CTX * bn_ctx = NULL; | |
1963 | #endif | |
d02b48c6 RE |
1964 | |
1965 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
1966 | { | |
1967 | d=(unsigned char *)s->init_buf->data; | |
1968 | p= &(d[4]); | |
1969 | ||
52b8dad8 | 1970 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
d02b48c6 | 1971 | |
57376542 BM |
1972 | /* Fool emacs indentation */ |
1973 | if (0) {} | |
bc36ee62 | 1974 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1975 | else if (alg_k & SSL_kRSA) |
d02b48c6 RE |
1976 | { |
1977 | RSA *rsa; | |
dfeab068 | 1978 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 1979 | |
b56bce4f BM |
1980 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
1981 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
1982 | else |
1983 | { | |
b56bce4f | 1984 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1985 | if ((pkey == NULL) || |
1986 | (pkey->type != EVP_PKEY_RSA) || | |
1987 | (pkey->pkey.rsa == NULL)) | |
1988 | { | |
5277d7cb | 1989 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1990 | goto err; |
1991 | } | |
1992 | rsa=pkey->pkey.rsa; | |
50596582 | 1993 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1994 | } |
1995 | ||
413c4f45 MC |
1996 | tmp_buf[0]=s->client_version>>8; |
1997 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 1998 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 1999 | goto err; |
d02b48c6 | 2000 | |
54a656ef | 2001 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 2002 | |
58964a49 RE |
2003 | q=p; |
2004 | /* Fix buf for TLS and beyond */ | |
2005 | if (s->version > SSL3_VERSION) | |
2006 | p+=2; | |
54a656ef | 2007 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 2008 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
2009 | #ifdef PKCS1_CHECK |
2010 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
2011 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
2012 | #endif | |
d02b48c6 RE |
2013 | if (n <= 0) |
2014 | { | |
2015 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
2016 | goto err; | |
2017 | } | |
2018 | ||
58964a49 RE |
2019 | /* Fix buf for TLS and beyond */ |
2020 | if (s->version > SSL3_VERSION) | |
2021 | { | |
2022 | s2n(n,q); | |
2023 | n+=2; | |
2024 | } | |
2025 | ||
d02b48c6 | 2026 | s->session->master_key_length= |
58964a49 | 2027 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 2028 | s->session->master_key, |
54a656ef | 2029 | tmp_buf,sizeof tmp_buf); |
4579924b | 2030 | OPENSSL_cleanse(tmp_buf,sizeof tmp_buf); |
d02b48c6 | 2031 | } |
f9b3bff6 | 2032 | #endif |
bc36ee62 | 2033 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 | 2034 | else if (alg_k & SSL_kKRB5) |
57376542 BM |
2035 | { |
2036 | krb5_error_code krb5rc; | |
2037 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
2038 | /* krb5_data krb5_ap_req; */ | |
2039 | krb5_data *enc_ticket; | |
2040 | krb5_data authenticator, *authp = NULL; | |
2a1ef754 | 2041 | EVP_CIPHER_CTX ciph_ctx; |
21fb688d | 2042 | const EVP_CIPHER *enc = NULL; |
2a1ef754 RL |
2043 | unsigned char iv[EVP_MAX_IV_LENGTH]; |
2044 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
2045 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
2046 | + EVP_MAX_IV_LENGTH]; | |
2047 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 2048 | |
de941e28 DSH |
2049 | EVP_CIPHER_CTX_init(&ciph_ctx); |
2050 | ||
f9b3bff6 | 2051 | #ifdef KSSL_DEBUG |
57376542 | 2052 | printf("ssl3_send_client_key_exchange(%lx & %lx)\n", |
7e69565f | 2053 | alg_k, SSL_kKRB5); |
f9b3bff6 RL |
2054 | #endif /* KSSL_DEBUG */ |
2055 | ||
2a1ef754 RL |
2056 | authp = NULL; |
2057 | #ifdef KRB5SENDAUTH | |
2058 | if (KRB5SENDAUTH) authp = &authenticator; | |
2059 | #endif /* KRB5SENDAUTH */ | |
2060 | ||
57376542 | 2061 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, |
2a1ef754 RL |
2062 | &kssl_err); |
2063 | enc = kssl_map_enc(kssl_ctx->enctype); | |
57376542 BM |
2064 | if (enc == NULL) |
2065 | goto err; | |
f9b3bff6 | 2066 | #ifdef KSSL_DEBUG |
57376542 BM |
2067 | { |
2068 | printf("kssl_cget_tkt rtn %d\n", krb5rc); | |
2069 | if (krb5rc && kssl_err.text) | |
2a1ef754 | 2070 | printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
57376542 | 2071 | } |
f9b3bff6 RL |
2072 | #endif /* KSSL_DEBUG */ |
2073 | ||
57376542 BM |
2074 | if (krb5rc) |
2075 | { | |
2076 | ssl3_send_alert(s,SSL3_AL_FATAL, | |
2a1ef754 | 2077 | SSL_AD_HANDSHAKE_FAILURE); |
57376542 | 2078 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2a1ef754 | 2079 | kssl_err.reason); |
57376542 BM |
2080 | goto err; |
2081 | } | |
f9b3bff6 | 2082 | |
2a1ef754 RL |
2083 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
2084 | ** in place of RFC 2712 KerberosWrapper, as in: | |
2085 | ** | |
57376542 BM |
2086 | ** Send ticket (copy to *p, set n = length) |
2087 | ** n = krb5_ap_req.length; | |
2088 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
2089 | ** if (krb5_ap_req.data) | |
2090 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
2091 | ** | |
2a1ef754 RL |
2092 | ** Now using real RFC 2712 KerberosWrapper |
2093 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
2094 | ** Note: 2712 "opaque" types are here replaced | |
2095 | ** with a 2-byte length followed by the value. | |
2096 | ** Example: | |
2097 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
2098 | ** Where "xx xx" = length bytes. Shown here with | |
2099 | ** optional authenticator omitted. | |
2100 | */ | |
2101 | ||
2102 | /* KerberosWrapper.Ticket */ | |
2103 | s2n(enc_ticket->length,p); | |
2104 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
2105 | p+= enc_ticket->length; | |
2106 | n = enc_ticket->length + 2; | |
2107 | ||
2108 | /* KerberosWrapper.Authenticator */ | |
2109 | if (authp && authp->length) | |
2110 | { | |
2111 | s2n(authp->length,p); | |
2112 | memcpy(p, authp->data, authp->length); | |
2113 | p+= authp->length; | |
2114 | n+= authp->length + 2; | |
2115 | ||
2116 | free(authp->data); | |
2117 | authp->data = NULL; | |
2118 | authp->length = 0; | |
2119 | } | |
2120 | else | |
2121 | { | |
2122 | s2n(0,p);/* null authenticator length */ | |
2123 | n+=2; | |
2124 | } | |
2125 | ||
cbb92dfa RL |
2126 | tmp_buf[0]=s->client_version>>8; |
2127 | tmp_buf[1]=s->client_version&0xff; | |
2128 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) | |
2129 | goto err; | |
2a1ef754 RL |
2130 | |
2131 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 2132 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
2133 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
2134 | ** kssl_ctx->length); | |
581f1c84 | 2135 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
2136 | */ |
2137 | ||
54a656ef | 2138 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
2139 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
2140 | kssl_ctx->key,iv); | |
2a1ef754 | 2141 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 2142 | sizeof tmp_buf); |
581f1c84 | 2143 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 2144 | outl += padl; |
21fb688d | 2145 | if (outl > (int)sizeof epms) |
5574e0ed BM |
2146 | { |
2147 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
2148 | goto err; | |
2149 | } | |
2a1ef754 RL |
2150 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
2151 | ||
2152 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
2153 | s2n(outl,p); | |
2154 | memcpy(p, epms, outl); | |
2155 | p+=outl; | |
2156 | n+=outl + 2; | |
2157 | ||
57376542 | 2158 | s->session->master_key_length= |
52b8dad8 | 2159 | s->method->ssl3_enc->generate_master_secret(s, |
2a1ef754 | 2160 | s->session->master_key, |
54a656ef | 2161 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 2162 | |
4579924b RL |
2163 | OPENSSL_cleanse(tmp_buf, sizeof tmp_buf); |
2164 | OPENSSL_cleanse(epms, outl); | |
57376542 | 2165 | } |
d02b48c6 | 2166 | #endif |
bc36ee62 | 2167 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2168 | else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
2169 | { |
2170 | DH *dh_srvr,*dh_clnt; | |
2171 | ||
e194fe8f BM |
2172 | if (s->session->sess_cert == NULL) |
2173 | { | |
2174 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
2175 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
2176 | goto err; | |
2177 | } | |
2178 | ||
b56bce4f BM |
2179 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
2180 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
2181 | else |
2182 | { | |
2183 | /* we get them from the cert */ | |
58964a49 | 2184 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2185 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
2186 | goto err; | |
2187 | } | |
2188 | ||
2189 | /* generate a new random key */ | |
2190 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
2191 | { | |
2192 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
2193 | goto err; | |
2194 | } | |
2195 | if (!DH_generate_key(dh_clnt)) | |
2196 | { | |
2197 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
2198 | goto err; | |
2199 | } | |
2200 | ||
2201 | /* use the 'p' output buffer for the DH key, but | |
2202 | * make sure to clear it out afterwards */ | |
58964a49 | 2203 | |
d02b48c6 | 2204 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 2205 | |
d02b48c6 RE |
2206 | if (n <= 0) |
2207 | { | |
2208 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
2209 | goto err; | |
2210 | } | |
2211 | ||
2212 | /* generate master key from the result */ | |
2213 | s->session->master_key_length= | |
58964a49 | 2214 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
2215 | s->session->master_key,p,n); |
2216 | /* clean up */ | |
2217 | memset(p,0,n); | |
2218 | ||
2219 | /* send off the data */ | |
2220 | n=BN_num_bytes(dh_clnt->pub_key); | |
2221 | s2n(n,p); | |
2222 | BN_bn2bin(dh_clnt->pub_key,p); | |
2223 | n+=2; | |
2224 | ||
2225 | DH_free(dh_clnt); | |
2226 | ||
2227 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
2228 | } | |
d02b48c6 | 2229 | #endif |
ea262260 BM |
2230 | |
2231 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 2232 | else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) |
ea262260 | 2233 | { |
9dd84053 NL |
2234 | const EC_GROUP *srvr_group = NULL; |
2235 | EC_KEY *tkey; | |
ea262260 | 2236 | int ecdh_clnt_cert = 0; |
968766ca | 2237 | int field_size = 0; |
ea262260 BM |
2238 | |
2239 | /* Did we send out the client's | |
2240 | * ECDH share for use in premaster | |
2241 | * computation as part of client certificate? | |
2242 | * If so, set ecdh_clnt_cert to 1. | |
2243 | */ | |
52b8dad8 | 2244 | if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL)) |
ea262260 BM |
2245 | { |
2246 | /* XXX: For now, we do not support client | |
2247 | * authentication using ECDH certificates. | |
2248 | * To add such support, one needs to add | |
2249 | * code that checks for appropriate | |
2250 | * conditions and sets ecdh_clnt_cert to 1. | |
2251 | * For example, the cert have an ECC | |
2252 | * key on the same curve as the server's | |
2253 | * and the key should be authorized for | |
2254 | * key agreement. | |
2255 | * | |
2256 | * One also needs to add code in ssl3_connect | |
2257 | * to skip sending the certificate verify | |
2258 | * message. | |
2259 | * | |
2260 | * if ((s->cert->key->privatekey != NULL) && | |
2261 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 2262 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
2263 | * ecdh_clnt_cert = 1; |
2264 | */ | |
2265 | } | |
2266 | ||
2267 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
2268 | { | |
9dd84053 | 2269 | tkey = s->session->sess_cert->peer_ecdh_tmp; |
ea262260 BM |
2270 | } |
2271 | else | |
2272 | { | |
2273 | /* Get the Server Public Key from Cert */ | |
2274 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
2275 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
2276 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 2277 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
9dd84053 | 2278 | (srvr_pub_pkey->pkey.ec == NULL)) |
ea262260 BM |
2279 | { |
2280 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2281 | ERR_R_INTERNAL_ERROR); | |
2282 | goto err; | |
2283 | } | |
2284 | ||
9dd84053 | 2285 | tkey = srvr_pub_pkey->pkey.ec; |
ea262260 BM |
2286 | } |
2287 | ||
9dd84053 NL |
2288 | srvr_group = EC_KEY_get0_group(tkey); |
2289 | srvr_ecpoint = EC_KEY_get0_public_key(tkey); | |
2290 | ||
ea262260 BM |
2291 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) |
2292 | { | |
2293 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2294 | ERR_R_INTERNAL_ERROR); | |
2295 | goto err; | |
2296 | } | |
2297 | ||
2298 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
2299 | { | |
2300 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2301 | goto err; | |
2302 | } | |
2303 | ||
9dd84053 NL |
2304 | if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) |
2305 | { | |
2306 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2307 | goto err; | |
2308 | } | |
ea262260 BM |
2309 | if (ecdh_clnt_cert) |
2310 | { | |
57376542 | 2311 | /* Reuse key info from our certificate |
ea262260 BM |
2312 | * We only need our private key to perform |
2313 | * the ECDH computation. | |
2314 | */ | |
9dd84053 NL |
2315 | const BIGNUM *priv_key; |
2316 | tkey = s->cert->key->privatekey->pkey.ec; | |
2317 | priv_key = EC_KEY_get0_private_key(tkey); | |
2318 | if (priv_key == NULL) | |
2319 | { | |
2320 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2321 | goto err; | |
2322 | } | |
2323 | if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) | |
2324 | { | |
2325 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2326 | goto err; | |
2327 | } | |
ea262260 BM |
2328 | } |
2329 | else | |
2330 | { | |
2331 | /* Generate a new ECDH key pair */ | |
2332 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
2333 | { | |
2334 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
2335 | goto err; | |
2336 | } | |
2337 | } | |
2338 | ||
57376542 BM |
2339 | /* use the 'p' output buffer for the ECDH key, but |
2340 | * make sure to clear it out afterwards | |
ea262260 BM |
2341 | */ |
2342 | ||
9dd84053 | 2343 | field_size = EC_GROUP_get_degree(srvr_group); |
968766ca BM |
2344 | if (field_size <= 0) |
2345 | { | |
2346 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2347 | ERR_R_ECDH_LIB); | |
2348 | goto err; | |
2349 | } | |
d56349a2 | 2350 | n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL); |
ea262260 | 2351 | if (n <= 0) |
57376542 BM |
2352 | { |
2353 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
ea262260 | 2354 | ERR_R_ECDH_LIB); |
57376542 | 2355 | goto err; |
ea262260 BM |
2356 | } |
2357 | ||
57376542 BM |
2358 | /* generate master key from the result */ |
2359 | s->session->master_key_length = s->method->ssl3_enc \ | |
ea262260 BM |
2360 | -> generate_master_secret(s, |
2361 | s->session->master_key, | |
2362 | p, n); | |
2363 | ||
57376542 | 2364 | memset(p, 0, n); /* clean up */ |
ea262260 BM |
2365 | |
2366 | if (ecdh_clnt_cert) | |
2367 | { | |
2368 | /* Send empty client key exch message */ | |
2369 | n = 0; | |
2370 | } | |
2371 | else | |
2372 | { | |
2373 | /* First check the size of encoding and | |
2374 | * allocate memory accordingly. | |
2375 | */ | |
2376 | encoded_pt_len = | |
9dd84053 NL |
2377 | EC_POINT_point2oct(srvr_group, |
2378 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2379 | POINT_CONVERSION_UNCOMPRESSED, |
2380 | NULL, 0, NULL); | |
2381 | ||
2382 | encodedPoint = (unsigned char *) | |
2383 | OPENSSL_malloc(encoded_pt_len * | |
2384 | sizeof(unsigned char)); | |
2385 | bn_ctx = BN_CTX_new(); | |
2386 | if ((encodedPoint == NULL) || | |
2387 | (bn_ctx == NULL)) | |
2388 | { | |
2389 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2390 | goto err; | |
2391 | } | |
2392 | ||
2393 | /* Encode the public key */ | |
9dd84053 NL |
2394 | n = EC_POINT_point2oct(srvr_group, |
2395 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2396 | POINT_CONVERSION_UNCOMPRESSED, |
2397 | encodedPoint, encoded_pt_len, bn_ctx); | |
2398 | ||
2399 | *p = n; /* length of encoded point */ | |
57376542 | 2400 | /* Encoded point will be copied here */ |
ea262260 BM |
2401 | p += 1; |
2402 | /* copy the point */ | |
2403 | memcpy((unsigned char *)p, encodedPoint, n); | |
2404 | /* increment n to account for length field */ | |
2405 | n += 1; | |
2406 | } | |
2407 | ||
2408 | /* Free allocated memory */ | |
2409 | BN_CTX_free(bn_ctx); | |
2410 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2411 | if (clnt_ecdh != NULL) | |
ea262260 | 2412 | EC_KEY_free(clnt_ecdh); |
ea262260 BM |
2413 | EVP_PKEY_free(srvr_pub_pkey); |
2414 | } | |
2415 | #endif /* !OPENSSL_NO_ECDH */ | |
0e1dba93 DSH |
2416 | else if (alg_k & SSL_kGOST) |
2417 | { | |
2418 | /* GOST key exchange message creation */ | |
2419 | EVP_PKEY_CTX *pkey_ctx; | |
2420 | X509 *peer_cert; | |
2421 | size_t msglen; | |
2422 | unsigned int md_len; | |
2423 | int keytype; | |
bfd502f0 | 2424 | unsigned char premaster_secret[32],shared_ukm[32], tmp[256]; |
0e1dba93 DSH |
2425 | EVP_MD_CTX *ukm_hash; |
2426 | EVP_PKEY *pub_key; | |
2427 | ||
2428 | /* Get server sertificate PKEY and create ctx from it */ | |
2429 | peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509; | |
2430 | if (!peer_cert) | |
2431 | peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509; | |
2432 | if (!peer_cert) { | |
2433 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER); | |
2434 | goto err; | |
2435 | } | |
2436 | ||
2437 | pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL); | |
2438 | /* If we have send a certificate, and certificate key | |
2439 | ||
2440 | * parameters match those of server certificate, use | |
2441 | * certificate key for key exchange | |
2442 | */ | |
2443 | ||
2444 | /* Otherwise, generate ephemeral key pair */ | |
2445 | ||
2446 | EVP_PKEY_encrypt_init(pkey_ctx); | |
2447 | /* Generate session key */ | |
2448 | RAND_bytes(premaster_secret,32); | |
2449 | /* If we have client certificate, use its secret as peer key */ | |
bfd502f0 DSH |
2450 | if (s->s3->tmp.cert_req && s->cert->key->privatekey) { |
2451 | if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) { | |
0e1dba93 DSH |
2452 | /* If there was an error - just ignore it. Ephemeral key |
2453 | * would be used | |
2454 | */ | |
2455 | ERR_clear_error(); | |
bfd502f0 | 2456 | } |
0e1dba93 DSH |
2457 | } |
2458 | /* Compute shared IV and store it in algorithm-specific | |
2459 | * context data */ | |
2460 | ukm_hash = EVP_MD_CTX_create(); | |
2461 | EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94)); | |
2462 | EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE); | |
2463 | EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE); | |
2464 | EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len); | |
2465 | EVP_MD_CTX_destroy(ukm_hash); | |
2466 | if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV, | |
2467 | 8,shared_ukm)<0) { | |
2468 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2469 | SSL_R_LIBRARY_BUG); | |
2470 | goto err; | |
2471 | } | |
2472 | /* Make GOST keytransport blob message */ | |
2473 | /*Encapsulate it into sequence */ | |
2474 | *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED; | |
bfd502f0 DSH |
2475 | msglen=255; |
2476 | if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) { | |
0e1dba93 DSH |
2477 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2478 | SSL_R_LIBRARY_BUG); | |
2479 | goto err; | |
bfd502f0 DSH |
2480 | } |
2481 | if (msglen >= 0x80) | |
2482 | { | |
2483 | *(p++)=0x81; | |
2484 | *(p++)= msglen & 0xff; | |
2485 | n=msglen+3; | |
2486 | } | |
2487 | else | |
2488 | { | |
2489 | *(p++)= msglen & 0xff; | |
2490 | n=msglen+2; | |
2491 | } | |
2492 | memcpy(p, tmp, msglen); | |
2493 | /* Check if pubkey from client certificate was used */ | |
2494 | if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) | |
2495 | { | |
2496 | /* Set flag "skip certificate verify" */ | |
2497 | s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY; | |
2498 | } | |
0e1dba93 DSH |
2499 | EVP_PKEY_CTX_free(pkey_ctx); |
2500 | s->session->master_key_length= | |
2501 | s->method->ssl3_enc->generate_master_secret(s, | |
2502 | s->session->master_key,premaster_secret,32); | |
2503 | EVP_PKEY_free(pub_key); | |
2504 | ||
2505 | } | |
ddac1974 | 2506 | #ifndef OPENSSL_NO_PSK |
52b8dad8 | 2507 | else if (alg_k & SSL_kPSK) |
ddac1974 NL |
2508 | { |
2509 | char identity[PSK_MAX_IDENTITY_LEN]; | |
2510 | unsigned char *t = NULL; | |
2511 | unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4]; | |
2512 | unsigned int pre_ms_len = 0, psk_len = 0; | |
2513 | int psk_err = 1; | |
2514 | ||
2515 | n = 0; | |
2516 | if (s->psk_client_callback == NULL) | |
2517 | { | |
2518 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2519 | SSL_R_PSK_NO_CLIENT_CB); | |
2520 | goto err; | |
2521 | } | |
2522 | ||
2523 | psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint, | |
2524 | identity, PSK_MAX_IDENTITY_LEN, | |
2525 | psk_or_pre_ms, sizeof(psk_or_pre_ms)); | |
2526 | if (psk_len > PSK_MAX_PSK_LEN) | |
2527 | { | |
2528 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2529 | ERR_R_INTERNAL_ERROR); | |
2530 | goto psk_err; | |
2531 | } | |
2532 | else if (psk_len == 0) | |
2533 | { | |
2534 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2535 | SSL_R_PSK_IDENTITY_NOT_FOUND); | |
2536 | goto psk_err; | |
2537 | } | |
2538 | ||
2539 | /* create PSK pre_master_secret */ | |
2540 | pre_ms_len = 2+psk_len+2+psk_len; | |
2541 | t = psk_or_pre_ms; | |
2542 | memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len); | |
2543 | s2n(psk_len, t); | |
2544 | memset(t, 0, psk_len); | |
2545 | t+=psk_len; | |
2546 | s2n(psk_len, t); | |
2547 | ||
2548 | if (s->session->psk_identity_hint != NULL) | |
2549 | OPENSSL_free(s->session->psk_identity_hint); | |
2550 | s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint); | |
2551 | if (s->ctx->psk_identity_hint != NULL && | |
2552 | s->session->psk_identity_hint == NULL) | |
2553 | { | |
2554 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2555 | ERR_R_MALLOC_FAILURE); | |
2556 | goto psk_err; | |
2557 | } | |
2558 | ||
2559 | if (s->session->psk_identity != NULL) | |
2560 | OPENSSL_free(s->session->psk_identity); | |
2561 | s->session->psk_identity = BUF_strdup(identity); | |
2562 | if (s->session->psk_identity == NULL) | |
2563 | { | |
2564 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2565 | ERR_R_MALLOC_FAILURE); | |
2566 | goto psk_err; | |
2567 | } | |
2568 | ||
2569 | s->session->master_key_length = | |
2570 | s->method->ssl3_enc->generate_master_secret(s, | |
2571 | s->session->master_key, | |
2572 | psk_or_pre_ms, pre_ms_len); | |
2573 | n = strlen(identity); | |
2574 | s2n(n, p); | |
2575 | memcpy(p, identity, n); | |
2576 | n+=2; | |
2577 | psk_err = 0; | |
2578 | psk_err: | |
2579 | OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN); | |
52b8dad8 | 2580 | OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms)); |
ddac1974 NL |
2581 | if (psk_err != 0) |
2582 | { | |
2583 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); | |
2584 | goto err; | |
2585 | } | |
2586 | } | |
2587 | #endif | |
f9b3bff6 | 2588 | else |
d02b48c6 | 2589 | { |
ea262260 BM |
2590 | ssl3_send_alert(s, SSL3_AL_FATAL, |
2591 | SSL_AD_HANDSHAKE_FAILURE); | |
2592 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2593 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
2594 | goto err; |
2595 | } | |
2596 | ||
2597 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
2598 | l2n3(n,d); | |
2599 | ||
2600 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
2601 | /* number of bytes to write */ | |
2602 | s->init_num=n+4; | |
2603 | s->init_off=0; | |
2604 | } | |
2605 | ||
2606 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
2607 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2608 | err: | |
ea262260 BM |
2609 | #ifndef OPENSSL_NO_ECDH |
2610 | BN_CTX_free(bn_ctx); | |
2611 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2612 | if (clnt_ecdh != NULL) | |
ea262260 | 2613 | EC_KEY_free(clnt_ecdh); |
57376542 | 2614 | EVP_PKEY_free(srvr_pub_pkey); |
ea262260 | 2615 | #endif |
d02b48c6 RE |
2616 | return(-1); |
2617 | } | |
2618 | ||
36d16f8e | 2619 | int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
2620 | { |
2621 | unsigned char *p,*d; | |
2622 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
2623 | EVP_PKEY *pkey; | |
0e1dba93 | 2624 | EVP_PKEY_CTX *pctx=NULL; |
bc36ee62 | 2625 | #ifndef OPENSSL_NO_RSA |
ca7fea96 | 2626 | unsigned u=0; |
79df9d62 | 2627 | #endif |
d02b48c6 | 2628 | unsigned long n; |
3eeaab4b | 2629 | #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA) |
58964a49 RE |
2630 | int j; |
2631 | #endif | |
d02b48c6 RE |
2632 | |
2633 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) | |
2634 | { | |
2635 | d=(unsigned char *)s->init_buf->data; | |
2636 | p= &(d[4]); | |
2637 | pkey=s->cert->key->privatekey; | |
0e1dba93 DSH |
2638 | /* Create context from key and test if sha1 is allowed as digest */ |
2639 | pctx = EVP_PKEY_CTX_new(pkey,NULL); | |
2640 | EVP_PKEY_sign_init(pctx); | |
2641 | if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0) | |
2642 | { | |
2643 | s->method->ssl3_enc->cert_verify_mac(s, | |
2644 | NID_sha1, | |
2645 | &(data[MD5_DIGEST_LENGTH])); | |
2646 | } | |
2647 | else | |
2648 | { | |
2649 | ERR_clear_error(); | |
2650 | } | |
bc36ee62 | 2651 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2652 | if (pkey->type == EVP_PKEY_RSA) |
2653 | { | |
58964a49 | 2654 | s->method->ssl3_enc->cert_verify_mac(s, |
81025661 DSH |
2655 | NID_md5, |
2656 | &(data[0])); | |
1c80019a DSH |
2657 | if (RSA_sign(NID_md5_sha1, data, |
2658 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 2659 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
2660 | { |
2661 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
2662 | goto err; | |
2663 | } | |
ca7fea96 BL |
2664 | s2n(u,p); |
2665 | n=u+2; | |
d02b48c6 RE |
2666 | } |
2667 | else | |
2668 | #endif | |
bc36ee62 | 2669 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2670 | if (pkey->type == EVP_PKEY_DSA) |
2671 | { | |
2672 | if (!DSA_sign(pkey->save_type, | |
2673 | &(data[MD5_DIGEST_LENGTH]), | |
2674 | SHA_DIGEST_LENGTH,&(p[2]), | |
2675 | (unsigned int *)&j,pkey->pkey.dsa)) | |
2676 | { | |
2677 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
2678 | goto err; | |
2679 | } | |
2680 | s2n(j,p); | |
2681 | n=j+2; | |
2682 | } | |
2683 | else | |
ea262260 BM |
2684 | #endif |
2685 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 2686 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
2687 | { |
2688 | if (!ECDSA_sign(pkey->save_type, | |
2689 | &(data[MD5_DIGEST_LENGTH]), | |
2690 | SHA_DIGEST_LENGTH,&(p[2]), | |
9dd84053 | 2691 | (unsigned int *)&j,pkey->pkey.ec)) |
ea262260 BM |
2692 | { |
2693 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
2694 | ERR_R_ECDSA_LIB); | |
2695 | goto err; | |
2696 | } | |
2697 | s2n(j,p); | |
2698 | n=j+2; | |
2699 | } | |
2700 | else | |
d02b48c6 | 2701 | #endif |
0e1dba93 DSH |
2702 | if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001) |
2703 | { | |
2704 | unsigned char signbuf[64]; | |
2705 | int i; | |
9400d9ac | 2706 | size_t sigsize=64; |
0e1dba93 DSH |
2707 | s->method->ssl3_enc->cert_verify_mac(s, |
2708 | NID_id_GostR3411_94, | |
2709 | data); | |
80afb40a | 2710 | if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) { |
0e1dba93 DSH |
2711 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, |
2712 | ERR_R_INTERNAL_ERROR); | |
2713 | goto err; | |
2714 | } | |
2715 | for (i=63,j=0; i>=0; j++, i--) { | |
2716 | p[2+j]=signbuf[i]; | |
2717 | } | |
2718 | s2n(j,p); | |
2719 | n=j+2; | |
2720 | } | |
2721 | else | |
2722 | { | |
5277d7cb | 2723 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 | 2724 | goto err; |
0e1dba93 | 2725 | } |
d02b48c6 RE |
2726 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; |
2727 | l2n3(n,d); | |
2728 | ||
ba9f80c5 | 2729 | s->state=SSL3_ST_CW_CERT_VRFY_B; |
d02b48c6 RE |
2730 | s->init_num=(int)n+4; |
2731 | s->init_off=0; | |
2732 | } | |
0e1dba93 | 2733 | EVP_PKEY_CTX_free(pctx); |
d02b48c6 RE |
2734 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); |
2735 | err: | |
0e1dba93 | 2736 | EVP_PKEY_CTX_free(pctx); |
d02b48c6 RE |
2737 | return(-1); |
2738 | } | |
2739 | ||
36d16f8e | 2740 | int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
2741 | { |
2742 | X509 *x509=NULL; | |
2743 | EVP_PKEY *pkey=NULL; | |
2744 | int i; | |
2745 | unsigned long l; | |
2746 | ||
2747 | if (s->state == SSL3_ST_CW_CERT_A) | |
2748 | { | |
2749 | if ((s->cert == NULL) || | |
2750 | (s->cert->key->x509 == NULL) || | |
2751 | (s->cert->key->privatekey == NULL)) | |
2752 | s->state=SSL3_ST_CW_CERT_B; | |
2753 | else | |
2754 | s->state=SSL3_ST_CW_CERT_C; | |
2755 | } | |
2756 | ||
2757 | /* We need to get a client cert */ | |
2758 | if (s->state == SSL3_ST_CW_CERT_B) | |
2759 | { | |
2760 | /* If we get an error, we need to | |
2761 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
2762 | * We then get retied later */ | |
2763 | i=0; | |
368888bc | 2764 | i = ssl_do_client_cert_cb(s, &x509, &pkey); |
d02b48c6 RE |
2765 | if (i < 0) |
2766 | { | |
2767 | s->rwstate=SSL_X509_LOOKUP; | |
2768 | return(-1); | |
2769 | } | |
2770 | s->rwstate=SSL_NOTHING; | |
2771 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
2772 | { | |
2773 | s->state=SSL3_ST_CW_CERT_B; | |
2774 | if ( !SSL_use_certificate(s,x509) || | |
2775 | !SSL_use_PrivateKey(s,pkey)) | |
2776 | i=0; | |
2777 | } | |
2778 | else if (i == 1) | |
2779 | { | |
2780 | i=0; | |
2781 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
2782 | } | |
2783 | ||
2784 | if (x509 != NULL) X509_free(x509); | |
2785 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
2786 | if (i == 0) | |
2787 | { | |
58964a49 RE |
2788 | if (s->version == SSL3_VERSION) |
2789 | { | |
2790 | s->s3->tmp.cert_req=0; | |
2791 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
2792 | return(1); | |
2793 | } | |
2794 | else | |
2795 | { | |
2796 | s->s3->tmp.cert_req=2; | |
2797 | } | |
d02b48c6 RE |
2798 | } |
2799 | ||
2800 | /* Ok, we have a cert */ | |
2801 | s->state=SSL3_ST_CW_CERT_C; | |
2802 | } | |
2803 | ||
2804 | if (s->state == SSL3_ST_CW_CERT_C) | |
2805 | { | |
2806 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
2807 | l=ssl3_output_cert_chain(s, |
2808 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
d02b48c6 RE |
2809 | s->init_num=(int)l; |
2810 | s->init_off=0; | |
2811 | } | |
2812 | /* SSL3_ST_CW_CERT_D */ | |
2813 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2814 | } | |
2815 | ||
2816 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
2817 | ||
36d16f8e | 2818 | int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
2819 | { |
2820 | int i,idx; | |
52b8dad8 | 2821 | long alg_k,alg_a; |
d02b48c6 | 2822 | EVP_PKEY *pkey=NULL; |
b56bce4f | 2823 | SESS_CERT *sc; |
bc36ee62 | 2824 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 2825 | RSA *rsa; |
79df9d62 | 2826 | #endif |
bc36ee62 | 2827 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2828 | DH *dh; |
79df9d62 | 2829 | #endif |
d02b48c6 | 2830 | |
b56bce4f | 2831 | sc=s->session->sess_cert; |
b56bce4f | 2832 | if (sc == NULL) |
d02b48c6 | 2833 | { |
5277d7cb | 2834 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2835 | goto err; |
2836 | } | |
2837 | ||
52b8dad8 BM |
2838 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
2839 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
d02b48c6 RE |
2840 | |
2841 | /* we don't have a certificate */ | |
52b8dad8 | 2842 | if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK)) |
d02b48c6 RE |
2843 | return(1); |
2844 | ||
bc36ee62 | 2845 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 2846 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 2847 | #endif |
bc36ee62 | 2848 | #ifndef OPENSSL_NO_DH |
b56bce4f | 2849 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 2850 | #endif |
d02b48c6 RE |
2851 | |
2852 | /* This is the passed certificate */ | |
2853 | ||
b56bce4f | 2854 | idx=sc->peer_cert_type; |
ea262260 BM |
2855 | #ifndef OPENSSL_NO_ECDH |
2856 | if (idx == SSL_PKEY_ECC) | |
2857 | { | |
ed3ecd80 | 2858 | if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, |
ea262260 BM |
2859 | s->s3->tmp.new_cipher) == 0) |
2860 | { /* check failed */ | |
2861 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
52b8dad8 | 2862 | goto f_err; |
ea262260 BM |
2863 | } |
2864 | else | |
2865 | { | |
2866 | return 1; | |
2867 | } | |
2868 | } | |
2869 | #endif | |
b56bce4f BM |
2870 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
2871 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 2872 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2873 | |
2874 | ||
2875 | /* Check that we have a certificate if we require one */ | |
52b8dad8 | 2876 | if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
2877 | { |
2878 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
2879 | goto f_err; | |
2880 | } | |
bc36ee62 | 2881 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 2882 | else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
2883 | { |
2884 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
2885 | goto f_err; | |
2886 | } | |
2887 | #endif | |
bc36ee62 | 2888 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 2889 | if ((alg_k & SSL_kRSA) && |
d02b48c6 RE |
2890 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) |
2891 | { | |
2892 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
2893 | goto f_err; | |
2894 | } | |
79df9d62 | 2895 | #endif |
bc36ee62 | 2896 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2897 | if ((alg_k & SSL_kEDH) && |
d02b48c6 RE |
2898 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
2899 | { | |
2900 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
2901 | goto f_err; | |
2902 | } | |
52b8dad8 | 2903 | else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) |
d02b48c6 RE |
2904 | { |
2905 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
2906 | goto f_err; | |
2907 | } | |
bc36ee62 | 2908 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 2909 | else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) |
d02b48c6 RE |
2910 | { |
2911 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
2912 | goto f_err; | |
2913 | } | |
2914 | #endif | |
2915 | #endif | |
2916 | ||
018e57c7 | 2917 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 2918 | { |
bc36ee62 | 2919 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 2920 | if (alg_k & SSL_kRSA) |
d02b48c6 | 2921 | { |
06ab81f9 | 2922 | if (rsa == NULL |
70ef9c5a | 2923 | || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2924 | { |
2925 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
2926 | goto f_err; | |
2927 | } | |
2928 | } | |
2929 | else | |
2930 | #endif | |
bc36ee62 | 2931 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2932 | if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
2933 | { |
2934 | if (dh == NULL | |
70ef9c5a | 2935 | || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2936 | { |
2937 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
2938 | goto f_err; | |
2939 | } | |
2940 | } | |
2941 | else | |
2942 | #endif | |
2943 | { | |
2944 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
2945 | goto f_err; | |
2946 | } | |
2947 | } | |
2948 | return(1); | |
2949 | f_err: | |
58964a49 | 2950 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2951 | err: |
2952 | return(0); | |
2953 | } | |
6434abbf DSH |
2954 | |
2955 | /* Check to see if handshake is full or resumed. Usually this is just a | |
2956 | * case of checking to see if a cache hit has occurred. In the case of | |
2957 | * session tickets we have to check the next message to be sure. | |
2958 | */ | |
2959 | ||
2960 | #ifndef OPENSSL_NO_TLSEXT | |
2961 | static int ssl3_check_finished(SSL *s) | |
2962 | { | |
2963 | int ok; | |
2964 | long n; | |
12bf56c0 DSH |
2965 | /* If we have no ticket it cannot be a resumed session. */ |
2966 | if (!s->session->tlsext_tick) | |
6434abbf DSH |
2967 | return 1; |
2968 | /* this function is called when we really expect a Certificate | |
2969 | * message, so permit appropriate message length */ | |
2970 | n=s->method->ssl_get_message(s, | |
2971 | SSL3_ST_CR_CERT_A, | |
2972 | SSL3_ST_CR_CERT_B, | |
2973 | -1, | |
2974 | s->max_cert_list, | |
2975 | &ok); | |
2976 | if (!ok) return((int)n); | |
2977 | s->s3->tmp.reuse_message = 1; | |
2978 | if ((s->s3->tmp.message_type == SSL3_MT_FINISHED) | |
2979 | || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET)) | |
2980 | return 2; | |
2981 | ||
2982 | return 1; | |
2983 | } | |
2984 | #endif | |
368888bc DSH |
2985 | |
2986 | int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey) | |
2987 | { | |
2988 | int i = 0; | |
2989 | #ifndef OPENSSL_NO_ENGINE | |
2990 | if (s->ctx->client_cert_engine) | |
2991 | { | |
2992 | i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s, | |
2993 | SSL_get_client_CA_list(s), | |
3fc59c84 | 2994 | px509, ppkey, NULL, NULL, NULL); |
368888bc DSH |
2995 | if (i != 0) |
2996 | return i; | |
2997 | } | |
2998 | #endif | |
2999 | if (s->ctx->client_cert_cb) | |
3000 | i = s->ctx->client_cert_cb(s,px509,ppkey); | |
3001 | return i; | |
3002 | } |