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