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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> |
7043fa70 DSH |
159 | #ifdef OPENSSL_FIPS |
160 | #include <openssl/fips.h> | |
161 | #endif | |
3eeaab4b | 162 | #ifndef OPENSSL_NO_DH |
60a938c6 | 163 | #include <openssl/dh.h> |
3eeaab4b | 164 | #endif |
d095b68d | 165 | #include <openssl/bn.h> |
368888bc DSH |
166 | #ifndef OPENSSL_NO_ENGINE |
167 | #include <openssl/engine.h> | |
168 | #endif | |
f9b3bff6 | 169 | |
ccd86b68 | 170 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
ea262260 | 171 | |
821bee43 | 172 | #ifndef OPENSSL_NO_SSL3_METHOD |
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) | |
821bee43 | 185 | #endif |
d02b48c6 | 186 | |
6b691a5c | 187 | int ssl3_connect(SSL *s) |
d02b48c6 | 188 | { |
8d6ad9e3 | 189 | BUF_MEM *buf=NULL; |
52b8dad8 | 190 | unsigned long Time=(unsigned long)time(NULL); |
45d87a1f | 191 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 192 | int ret= -1; |
477fd459 | 193 | int new_state,state,skip=0; |
d02b48c6 | 194 | |
eb952088 | 195 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 196 | ERR_clear_error(); |
58964a49 | 197 | clear_sys_error(); |
d02b48c6 RE |
198 | |
199 | if (s->info_callback != NULL) | |
200 | cb=s->info_callback; | |
201 | else if (s->ctx->info_callback != NULL) | |
202 | cb=s->ctx->info_callback; | |
203 | ||
d02b48c6 | 204 | s->in_handshake++; |
979689aa | 205 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 | 206 | |
bd6941cf DSH |
207 | #ifndef OPENSSL_NO_HEARTBEATS |
208 | /* If we're awaiting a HeartbeatResponse, pretend we | |
209 | * already got and don't await it anymore, because | |
210 | * Heartbeats don't make sense during handshakes anyway. | |
211 | */ | |
212 | if (s->tlsext_hb_pending) | |
213 | { | |
214 | s->tlsext_hb_pending = 0; | |
215 | s->tlsext_hb_seq++; | |
216 | } | |
217 | #endif | |
218 | ||
d02b48c6 RE |
219 | for (;;) |
220 | { | |
221 | state=s->state; | |
222 | ||
223 | switch(s->state) | |
224 | { | |
225 | case SSL_ST_RENEGOTIATE: | |
c6dd154b | 226 | s->renegotiate=1; |
d02b48c6 | 227 | s->state=SSL_ST_CONNECT; |
413c4f45 | 228 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
229 | /* break */ |
230 | case SSL_ST_BEFORE: | |
231 | case SSL_ST_CONNECT: | |
232 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
233 | case SSL_ST_OK|SSL_ST_CONNECT: | |
234 | ||
413c4f45 | 235 | s->server=0; |
d02b48c6 RE |
236 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
237 | ||
58964a49 | 238 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 239 | { |
5277d7cb | 240 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
241 | ret = -1; |
242 | goto end; | |
243 | } | |
244 | ||
58964a49 | 245 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
246 | s->type=SSL_ST_CONNECT; |
247 | ||
248 | if (s->init_buf == NULL) | |
249 | { | |
250 | if ((buf=BUF_MEM_new()) == NULL) | |
251 | { | |
252 | ret= -1; | |
253 | goto end; | |
254 | } | |
255 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
256 | { | |
257 | ret= -1; | |
258 | goto end; | |
259 | } | |
260 | s->init_buf=buf; | |
8d6ad9e3 | 261 | buf=NULL; |
d02b48c6 RE |
262 | } |
263 | ||
264 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
265 | ||
266 | /* setup buffing BIO */ | |
58964a49 | 267 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
268 | |
269 | /* don't push the buffering BIO quite yet */ | |
270 | ||
271 | ssl3_init_finished_mac(s); | |
272 | ||
273 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 274 | s->ctx->stats.sess_connect++; |
d02b48c6 | 275 | s->init_num=0; |
249a3e36 EK |
276 | s->s3->flags &= ~SSL3_FLAGS_CCS_OK; |
277 | /* Should have been reset by ssl3_get_finished, too. */ | |
278 | s->s3->change_cipher_spec = 0; | |
d02b48c6 RE |
279 | break; |
280 | ||
281 | case SSL3_ST_CW_CLNT_HELLO_A: | |
282 | case SSL3_ST_CW_CLNT_HELLO_B: | |
283 | ||
284 | s->shutdown=0; | |
285 | ret=ssl3_client_hello(s); | |
286 | if (ret <= 0) goto end; | |
287 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
288 | s->init_num=0; | |
289 | ||
290 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
291 | if (s->bbio != s->wbio) |
292 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
293 | |
294 | break; | |
295 | ||
296 | case SSL3_ST_CR_SRVR_HELLO_A: | |
297 | case SSL3_ST_CR_SRVR_HELLO_B: | |
298 | ret=ssl3_get_server_hello(s); | |
299 | if (ret <= 0) goto end; | |
241520e6 | 300 | |
d02b48c6 | 301 | if (s->hit) |
3c3f0259 | 302 | { |
d02b48c6 | 303 | s->state=SSL3_ST_CR_FINISHED_A; |
3c3f0259 BM |
304 | #ifndef OPENSSL_NO_TLSEXT |
305 | if (s->tlsext_ticket_expected) | |
306 | { | |
307 | /* receive renewed session ticket */ | |
308 | s->state=SSL3_ST_CR_SESSION_TICKET_A; | |
309 | } | |
310 | #endif | |
311 | } | |
d02b48c6 RE |
312 | else |
313 | s->state=SSL3_ST_CR_CERT_A; | |
314 | s->init_num=0; | |
315 | break; | |
316 | ||
317 | case SSL3_ST_CR_CERT_A: | |
318 | case SSL3_ST_CR_CERT_B: | |
30fbe92c | 319 | /* Check if it is anon DH/ECDH, SRP auth */ |
ddac1974 | 320 | /* or PSK */ |
30fbe92c | 321 | if (!(s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL|SSL_aSRP)) && |
52b8dad8 | 322 | !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) |
d02b48c6 RE |
323 | { |
324 | ret=ssl3_get_server_certificate(s); | |
325 | if (ret <= 0) goto end; | |
67c8e7f4 DSH |
326 | #ifndef OPENSSL_NO_TLSEXT |
327 | if (s->tlsext_status_expected) | |
328 | s->state=SSL3_ST_CR_CERT_STATUS_A; | |
329 | else | |
330 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
331 | } | |
332 | else | |
333 | { | |
334 | skip = 1; | |
335 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
d02b48c6 | 336 | } |
67c8e7f4 | 337 | #else |
3ce54f35 | 338 | } |
d02b48c6 RE |
339 | else |
340 | skip=1; | |
67c8e7f4 | 341 | |
d02b48c6 | 342 | s->state=SSL3_ST_CR_KEY_EXCH_A; |
67c8e7f4 | 343 | #endif |
d02b48c6 RE |
344 | s->init_num=0; |
345 | break; | |
346 | ||
347 | case SSL3_ST_CR_KEY_EXCH_A: | |
348 | case SSL3_ST_CR_KEY_EXCH_B: | |
349 | ret=ssl3_get_key_exchange(s); | |
350 | if (ret <= 0) goto end; | |
351 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
352 | s->init_num=0; | |
353 | ||
354 | /* at this point we check that we have the | |
355 | * required stuff from the server */ | |
356 | if (!ssl3_check_cert_and_algorithm(s)) | |
357 | { | |
358 | ret= -1; | |
359 | goto end; | |
360 | } | |
361 | break; | |
362 | ||
363 | case SSL3_ST_CR_CERT_REQ_A: | |
364 | case SSL3_ST_CR_CERT_REQ_B: | |
365 | ret=ssl3_get_certificate_request(s); | |
366 | if (ret <= 0) goto end; | |
367 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
368 | s->init_num=0; | |
369 | break; | |
370 | ||
371 | case SSL3_ST_CR_SRVR_DONE_A: | |
372 | case SSL3_ST_CR_SRVR_DONE_B: | |
373 | ret=ssl3_get_server_done(s); | |
374 | if (ret <= 0) goto end; | |
a149b246 BL |
375 | #ifndef OPENSSL_NO_SRP |
376 | if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) | |
377 | { | |
378 | if ((ret = SRP_Calc_A_param(s))<=0) | |
379 | { | |
3393e0c0 | 380 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC); |
a149b246 BL |
381 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR); |
382 | goto end; | |
383 | } | |
384 | } | |
385 | #endif | |
d02b48c6 RE |
386 | if (s->s3->tmp.cert_req) |
387 | s->state=SSL3_ST_CW_CERT_A; | |
388 | else | |
389 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
390 | s->init_num=0; | |
391 | ||
392 | break; | |
393 | ||
394 | case SSL3_ST_CW_CERT_A: | |
395 | case SSL3_ST_CW_CERT_B: | |
396 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 397 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
398 | ret=ssl3_send_client_certificate(s); |
399 | if (ret <= 0) goto end; | |
400 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
401 | s->init_num=0; | |
402 | break; | |
403 | ||
404 | case SSL3_ST_CW_KEY_EXCH_A: | |
405 | case SSL3_ST_CW_KEY_EXCH_B: | |
406 | ret=ssl3_send_client_key_exchange(s); | |
407 | if (ret <= 0) goto end; | |
d02b48c6 RE |
408 | /* EAY EAY EAY need to check for DH fix cert |
409 | * sent back */ | |
58964a49 RE |
410 | /* For TLS, cert_req is set to 2, so a cert chain |
411 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
412 | /* XXX: For now, we do not support client |
413 | * authentication in ECDH cipher suites with | |
414 | * ECDH (rather than ECDSA) certificates. | |
415 | * We need to skip the certificate verify | |
416 | * message when client's ECDH public key is sent | |
417 | * inside the client certificate. | |
418 | */ | |
58964a49 | 419 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
420 | { |
421 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
422 | } | |
423 | else | |
424 | { | |
425 | s->state=SSL3_ST_CW_CHANGE_A; | |
d02b48c6 | 426 | } |
bfd502f0 DSH |
427 | if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) |
428 | { | |
429 | s->state=SSL3_ST_CW_CHANGE_A; | |
bfd502f0 | 430 | } |
d02b48c6 RE |
431 | |
432 | s->init_num=0; | |
433 | break; | |
434 | ||
435 | case SSL3_ST_CW_CERT_VRFY_A: | |
436 | case SSL3_ST_CW_CERT_VRFY_B: | |
437 | ret=ssl3_send_client_verify(s); | |
438 | if (ret <= 0) goto end; | |
439 | s->state=SSL3_ST_CW_CHANGE_A; | |
440 | s->init_num=0; | |
d02b48c6 RE |
441 | break; |
442 | ||
443 | case SSL3_ST_CW_CHANGE_A: | |
444 | case SSL3_ST_CW_CHANGE_B: | |
445 | ret=ssl3_send_change_cipher_spec(s, | |
446 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
447 | if (ret <= 0) goto end; | |
68b33cc5 | 448 | |
68b33cc5 | 449 | #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG) |
d02b48c6 | 450 | s->state=SSL3_ST_CW_FINISHED_A; |
68b33cc5 | 451 | #else |
8cd897a4 | 452 | if (s->s3->next_proto_neg_seen) |
68b33cc5 BL |
453 | s->state=SSL3_ST_CW_NEXT_PROTO_A; |
454 | else | |
455 | s->state=SSL3_ST_CW_FINISHED_A; | |
456 | #endif | |
d02b48c6 RE |
457 | s->init_num=0; |
458 | ||
459 | s->session->cipher=s->s3->tmp.new_cipher; | |
09b6c2ef DSH |
460 | #ifdef OPENSSL_NO_COMP |
461 | s->session->compress_meth=0; | |
462 | #else | |
413c4f45 MC |
463 | if (s->s3->tmp.new_compression == NULL) |
464 | s->session->compress_meth=0; | |
465 | else | |
466 | s->session->compress_meth= | |
467 | s->s3->tmp.new_compression->id; | |
09b6c2ef | 468 | #endif |
58964a49 | 469 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
470 | { |
471 | ret= -1; | |
472 | goto end; | |
473 | } | |
474 | ||
58964a49 | 475 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
476 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
477 | { | |
478 | ret= -1; | |
479 | goto end; | |
480 | } | |
481 | ||
482 | break; | |
483 | ||
68b33cc5 BL |
484 | #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) |
485 | case SSL3_ST_CW_NEXT_PROTO_A: | |
486 | case SSL3_ST_CW_NEXT_PROTO_B: | |
487 | ret=ssl3_send_next_proto(s); | |
488 | if (ret <= 0) goto end; | |
489 | s->state=SSL3_ST_CW_FINISHED_A; | |
490 | break; | |
491 | #endif | |
492 | ||
d02b48c6 RE |
493 | case SSL3_ST_CW_FINISHED_A: |
494 | case SSL3_ST_CW_FINISHED_B: | |
495 | ret=ssl3_send_finished(s, | |
496 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
497 | s->method->ssl3_enc->client_finished_label, |
498 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
499 | if (ret <= 0) goto end; |
500 | s->state=SSL3_ST_CW_FLUSH; | |
501 | ||
502 | /* clear flags */ | |
503 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
504 | if (s->hit) | |
505 | { | |
506 | s->s3->tmp.next_state=SSL_ST_OK; | |
507 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
508 | { | |
509 | s->state=SSL_ST_OK; | |
510 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
511 | s->s3->delay_buf_pop_ret=0; | |
512 | } | |
513 | } | |
514 | else | |
515 | { | |
6434abbf DSH |
516 | #ifndef OPENSSL_NO_TLSEXT |
517 | /* Allow NewSessionTicket if ticket expected */ | |
518 | if (s->tlsext_ticket_expected) | |
519 | s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A; | |
520 | else | |
521 | #endif | |
522 | ||
d02b48c6 RE |
523 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; |
524 | } | |
525 | s->init_num=0; | |
526 | break; | |
527 | ||
6434abbf DSH |
528 | #ifndef OPENSSL_NO_TLSEXT |
529 | case SSL3_ST_CR_SESSION_TICKET_A: | |
530 | case SSL3_ST_CR_SESSION_TICKET_B: | |
531 | ret=ssl3_get_new_session_ticket(s); | |
446124a2 | 532 | if (ret <= 0) goto end; |
6434abbf DSH |
533 | s->state=SSL3_ST_CR_FINISHED_A; |
534 | s->init_num=0; | |
535 | break; | |
67c8e7f4 DSH |
536 | |
537 | case SSL3_ST_CR_CERT_STATUS_A: | |
538 | case SSL3_ST_CR_CERT_STATUS_B: | |
539 | ret=ssl3_get_cert_status(s); | |
540 | if (ret <= 0) goto end; | |
541 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
542 | s->init_num=0; | |
543 | break; | |
6434abbf DSH |
544 | #endif |
545 | ||
d02b48c6 RE |
546 | case SSL3_ST_CR_FINISHED_A: |
547 | case SSL3_ST_CR_FINISHED_B: | |
bc8923b1 | 548 | s->s3->flags |= SSL3_FLAGS_CCS_OK; |
d02b48c6 | 549 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, |
58964a49 | 550 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
551 | if (ret <= 0) goto end; |
552 | ||
553 | if (s->hit) | |
554 | s->state=SSL3_ST_CW_CHANGE_A; | |
555 | else | |
556 | s->state=SSL_ST_OK; | |
557 | s->init_num=0; | |
558 | break; | |
559 | ||
560 | case SSL3_ST_CW_FLUSH: | |
57749b1b DSH |
561 | s->rwstate=SSL_WRITING; |
562 | if (BIO_flush(s->wbio) <= 0) | |
d02b48c6 | 563 | { |
57749b1b DSH |
564 | ret= -1; |
565 | goto end; | |
d02b48c6 | 566 | } |
57749b1b | 567 | s->rwstate=SSL_NOTHING; |
d02b48c6 RE |
568 | s->state=s->s3->tmp.next_state; |
569 | break; | |
570 | ||
571 | case SSL_ST_OK: | |
572 | /* clean a few things up */ | |
573 | ssl3_cleanup_key_block(s); | |
574 | ||
413c4f45 | 575 | if (s->init_buf != NULL) |
d02b48c6 | 576 | { |
413c4f45 MC |
577 | BUF_MEM_free(s->init_buf); |
578 | s->init_buf=NULL; | |
d02b48c6 | 579 | } |
413c4f45 MC |
580 | |
581 | /* If we are not 'joining' the last two packets, | |
582 | * remove the buffering now */ | |
583 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
584 | ssl_free_wbio_buffer(s); | |
585 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
586 | |
587 | s->init_num=0; | |
c6dd154b | 588 | s->renegotiate=0; |
d02b48c6 RE |
589 | s->new_session=0; |
590 | ||
591 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 592 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
593 | |
594 | ret=1; | |
595 | /* s->server=0; */ | |
596 | s->handshake_func=ssl3_connect; | |
413c4f45 | 597 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
598 | |
599 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
600 | ||
601 | goto end; | |
dfeab068 | 602 | /* break; */ |
d02b48c6 RE |
603 | |
604 | default: | |
605 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
606 | ret= -1; | |
607 | goto end; | |
608 | /* break; */ | |
609 | } | |
610 | ||
611 | /* did we do anything */ | |
612 | if (!s->s3->tmp.reuse_message && !skip) | |
613 | { | |
58964a49 RE |
614 | if (s->debug) |
615 | { | |
616 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
617 | goto end; | |
618 | } | |
d02b48c6 RE |
619 | |
620 | if ((cb != NULL) && (s->state != state)) | |
621 | { | |
622 | new_state=s->state; | |
623 | s->state=state; | |
624 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
625 | s->state=new_state; | |
626 | } | |
627 | } | |
628 | skip=0; | |
629 | } | |
630 | end: | |
4d635a70 | 631 | s->in_handshake--; |
8d6ad9e3 RL |
632 | if (buf != NULL) |
633 | BUF_MEM_free(buf); | |
d02b48c6 RE |
634 | if (cb != NULL) |
635 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
d02b48c6 RE |
636 | return(ret); |
637 | } | |
638 | ||
639 | ||
36d16f8e | 640 | int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
641 | { |
642 | unsigned char *buf; | |
643 | unsigned char *p,*d; | |
09b6c2ef | 644 | int i; |
4af79303 | 645 | unsigned long l; |
09b6c2ef DSH |
646 | #ifndef OPENSSL_NO_COMP |
647 | int j; | |
413c4f45 | 648 | SSL_COMP *comp; |
09b6c2ef | 649 | #endif |
d02b48c6 RE |
650 | |
651 | buf=(unsigned char *)s->init_buf->data; | |
652 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
653 | { | |
257b2bfb DSH |
654 | SSL_SESSION *sess = s->session; |
655 | if ((sess == NULL) || | |
656 | (sess->ssl_version != s->version) || | |
257b2bfb | 657 | !sess->session_id_length || |
257b2bfb | 658 | (sess->not_resumable)) |
d02b48c6 RE |
659 | { |
660 | if (!ssl_get_new_session(s,0)) | |
661 | goto err; | |
662 | } | |
663 | /* else use the pre-loaded session */ | |
664 | ||
665 | p=s->s3->client_random; | |
3da721da NM |
666 | |
667 | if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0) | |
7c7667b8 | 668 | goto err; |
d02b48c6 RE |
669 | |
670 | /* Do the message type and length last */ | |
671 | d=p= &(buf[4]); | |
672 | ||
fc6800d1 DSH |
673 | /* version indicates the negotiated version: for example from |
674 | * an SSLv2/v3 compatible client hello). The client_version | |
675 | * field is the maximum version we permit and it is also | |
676 | * used in RSA encrypted premaster secrets. Some servers can | |
677 | * choke if we initially report a higher version then | |
678 | * renegotiate to a lower one in the premaster secret. This | |
679 | * didn't happen with TLS 1.0 as most servers supported it | |
680 | * but it can with TLS 1.1 or later if the server only supports | |
681 | * 1.0. | |
682 | * | |
683 | * Possible scenario with previous logic: | |
684 | * 1. Client hello indicates TLS 1.2 | |
685 | * 2. Server hello says TLS 1.0 | |
686 | * 3. RSA encrypted premaster secret uses 1.2. | |
687 | * 4. Handhaked proceeds using TLS 1.0. | |
688 | * 5. Server sends hello request to renegotiate. | |
689 | * 6. Client hello indicates TLS v1.0 as we now | |
690 | * know that is maximum server supports. | |
691 | * 7. Server chokes on RSA encrypted premaster secret | |
692 | * containing version 1.0. | |
693 | * | |
694 | * For interoperability it should be OK to always use the | |
695 | * maximum version we support in client hello and then rely | |
696 | * on the checking of version to ensure the servers isn't | |
697 | * being inconsistent: for example initially negotiating with | |
698 | * TLS 1.0 and renegotiating with TLS 1.2. We do this by using | |
699 | * client_version in client hello and not resetting it to | |
700 | * the negotiated version. | |
701 | */ | |
702 | #if 0 | |
58964a49 RE |
703 | *(p++)=s->version>>8; |
704 | *(p++)=s->version&0xff; | |
413c4f45 | 705 | s->client_version=s->version; |
fc6800d1 DSH |
706 | #else |
707 | *(p++)=s->client_version>>8; | |
708 | *(p++)=s->client_version&0xff; | |
709 | #endif | |
d02b48c6 RE |
710 | |
711 | /* Random stuff */ | |
712 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
713 | p+=SSL3_RANDOM_SIZE; | |
714 | ||
715 | /* Session ID */ | |
716 | if (s->new_session) | |
717 | i=0; | |
718 | else | |
719 | i=s->session->session_id_length; | |
720 | *(p++)=i; | |
721 | if (i != 0) | |
722 | { | |
27545970 | 723 | if (i > (int)sizeof(s->session->session_id)) |
5574e0ed BM |
724 | { |
725 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
726 | goto err; | |
727 | } | |
d02b48c6 RE |
728 | memcpy(p,s->session->session_id,i); |
729 | p+=i; | |
730 | } | |
731 | ||
732 | /* Ciphers supported */ | |
c6c2e313 | 733 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0); |
d02b48c6 RE |
734 | if (i == 0) |
735 | { | |
736 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
737 | goto err; | |
738 | } | |
89bd25eb DSH |
739 | #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH |
740 | /* Some servers hang if client hello > 256 bytes | |
741 | * as hack workaround chop number of supported ciphers | |
742 | * to keep it well below this if we use TLS v1.2 | |
743 | */ | |
744 | if (TLS1_get_version(s) >= TLS1_2_VERSION | |
745 | && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH) | |
746 | i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1; | |
747 | #endif | |
d02b48c6 RE |
748 | s2n(i,p); |
749 | p+=i; | |
750 | ||
dfeab068 | 751 | /* COMPRESSION */ |
09b6c2ef DSH |
752 | #ifdef OPENSSL_NO_COMP |
753 | *(p++)=1; | |
754 | #else | |
566dda07 DSH |
755 | |
756 | if ((s->options & SSL_OP_NO_COMPRESSION) | |
757 | || !s->ctx->comp_methods) | |
413c4f45 MC |
758 | j=0; |
759 | else | |
f73e07cf | 760 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
761 | *(p++)=1+j; |
762 | for (i=0; i<j; i++) | |
763 | { | |
f73e07cf | 764 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
765 | *(p++)=comp->id; |
766 | } | |
09b6c2ef | 767 | #endif |
413c4f45 | 768 | *(p++)=0; /* Add the NULL method */ |
761772d7 | 769 | |
ed3883d2 | 770 | #ifndef OPENSSL_NO_TLSEXT |
761772d7 | 771 | /* TLS extensions*/ |
36ca4ba6 BM |
772 | if (ssl_prepare_clienthello_tlsext(s) <= 0) |
773 | { | |
774 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT); | |
775 | goto err; | |
776 | } | |
f1fd4544 BM |
777 | if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL) |
778 | { | |
ed3883d2 BM |
779 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR); |
780 | goto err; | |
f1fd4544 | 781 | } |
ed3883d2 | 782 | #endif |
d02b48c6 RE |
783 | |
784 | l=(p-d); | |
785 | d=buf; | |
786 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
787 | l2n3(l,d); | |
788 | ||
789 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
790 | /* number of bytes to write */ | |
791 | s->init_num=p-buf; | |
792 | s->init_off=0; | |
793 | } | |
794 | ||
795 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
796 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
797 | err: | |
798 | return(-1); | |
799 | } | |
800 | ||
36d16f8e | 801 | int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 802 | { |
f73e07cf | 803 | STACK_OF(SSL_CIPHER) *sk; |
babb3798 | 804 | const SSL_CIPHER *c; |
d02b48c6 RE |
805 | unsigned char *p,*d; |
806 | int i,al,ok; | |
807 | unsigned int j; | |
808 | long n; | |
09b6c2ef | 809 | #ifndef OPENSSL_NO_COMP |
413c4f45 | 810 | SSL_COMP *comp; |
09b6c2ef | 811 | #endif |
d02b48c6 | 812 | |
36d16f8e | 813 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
814 | SSL3_ST_CR_SRVR_HELLO_A, |
815 | SSL3_ST_CR_SRVR_HELLO_B, | |
36d16f8e | 816 | -1, |
6434abbf | 817 | 20000, /* ?? */ |
d02b48c6 RE |
818 | &ok); |
819 | ||
820 | if (!ok) return((int)n); | |
36d16f8e | 821 | |
b452f433 | 822 | if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) |
36d16f8e BL |
823 | { |
824 | if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) | |
825 | { | |
826 | if ( s->d1->send_cookie == 0) | |
827 | { | |
828 | s->s3->tmp.reuse_message = 1; | |
829 | return 1; | |
830 | } | |
831 | else /* already sent a cookie */ | |
832 | { | |
833 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 834 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
835 | goto f_err; |
836 | } | |
837 | } | |
838 | } | |
839 | ||
840 | if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) | |
841 | { | |
842 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 843 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
844 | goto f_err; |
845 | } | |
846 | ||
48948d53 | 847 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 848 | |
58964a49 | 849 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
850 | { |
851 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
852 | s->version=(s->version&0xff00)|p[1]; |
853 | al=SSL_AD_PROTOCOL_VERSION; | |
854 | goto f_err; | |
d02b48c6 RE |
855 | } |
856 | p+=2; | |
857 | ||
858 | /* load the server hello data */ | |
859 | /* load the server random */ | |
860 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
861 | p+=SSL3_RANDOM_SIZE; | |
862 | ||
1eaccbef EK |
863 | s->hit = 0; |
864 | ||
d02b48c6 RE |
865 | /* get the session-id */ |
866 | j= *(p++); | |
867 | ||
a4f53a1c | 868 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 869 | { |
a4f53a1c BM |
870 | al=SSL_AD_ILLEGAL_PARAMETER; |
871 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
872 | goto f_err; | |
d02b48c6 | 873 | } |
54a656ef | 874 | |
12bf56c0 DSH |
875 | #ifndef OPENSSL_NO_TLSEXT |
876 | /* check if we want to resume the session based on external pre-shared secret */ | |
877 | if (s->version >= TLS1_VERSION && s->tls_session_secret_cb) | |
878 | { | |
879 | SSL_CIPHER *pref_cipher=NULL; | |
880 | s->session->master_key_length=sizeof(s->session->master_key); | |
881 | if (s->tls_session_secret_cb(s, s->session->master_key, | |
882 | &s->session->master_key_length, | |
883 | NULL, &pref_cipher, | |
884 | s->tls_session_secret_cb_arg)) | |
885 | { | |
886 | s->session->cipher = pref_cipher ? | |
887 | pref_cipher : ssl_get_cipher_by_char(s, p+j); | |
1eaccbef | 888 | s->hit = 1; |
12bf56c0 DSH |
889 | } |
890 | } | |
891 | #endif /* OPENSSL_NO_TLSEXT */ | |
892 | ||
1eaccbef | 893 | if (!s->hit && j != 0 && j == s->session->session_id_length |
b4cadc6e BL |
894 | && memcmp(p,s->session->session_id,j) == 0) |
895 | { | |
896 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
897 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
898 | { | |
a4f53a1c | 899 | /* actually a client application bug */ |
b4cadc6e BL |
900 | al=SSL_AD_ILLEGAL_PARAMETER; |
901 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
902 | goto f_err; | |
903 | } | |
904 | s->hit=1; | |
905 | } | |
1eaccbef EK |
906 | /* a miss or crap from the other end */ |
907 | if (!s->hit) | |
d02b48c6 | 908 | { |
58964a49 RE |
909 | /* If we were trying for session-id reuse, make a new |
910 | * SSL_SESSION so we don't stuff up other people */ | |
58964a49 RE |
911 | if (s->session->session_id_length > 0) |
912 | { | |
913 | if (!ssl_get_new_session(s,0)) | |
914 | { | |
915 | al=SSL_AD_INTERNAL_ERROR; | |
916 | goto f_err; | |
917 | } | |
918 | } | |
919 | s->session->session_id_length=j; | |
920 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
921 | } |
922 | p+=j; | |
923 | c=ssl_get_cipher_by_char(s,p); | |
924 | if (c == NULL) | |
925 | { | |
926 | /* unknown cipher */ | |
58964a49 | 927 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
928 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
929 | goto f_err; | |
930 | } | |
c8c6e9ec DSH |
931 | /* TLS v1.2 only ciphersuites require v1.2 or later */ |
932 | if ((c->algorithm_ssl & SSL_TLSV1_2) && | |
933 | (TLS1_get_version(s) < TLS1_2_VERSION)) | |
934 | { | |
935 | al=SSL_AD_ILLEGAL_PARAMETER; | |
936 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); | |
937 | goto f_err; | |
938 | } | |
83764a98 DSH |
939 | #ifndef OPENSSL_NO_SRP |
940 | if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) && | |
941 | !(s->srp_ctx.srp_Mask & SSL_kSRP)) | |
942 | { | |
943 | al=SSL_AD_ILLEGAL_PARAMETER; | |
944 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); | |
945 | goto f_err; | |
946 | } | |
947 | #endif /* OPENSSL_NO_SRP */ | |
d02b48c6 RE |
948 | p+=ssl_put_cipher_by_char(s,NULL,NULL); |
949 | ||
950 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 951 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
952 | if (i < 0) |
953 | { | |
954 | /* we did not say we would use this cipher */ | |
58964a49 | 955 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
956 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
957 | goto f_err; | |
958 | } | |
959 | ||
6a8afe22 LJ |
960 | /* Depending on the session caching (internal/external), the cipher |
961 | and/or cipher_id values may not be set. Make sure that | |
962 | cipher_id is set and use it for comparison. */ | |
963 | if (s->session->cipher) | |
964 | s->session->cipher_id = s->session->cipher->id; | |
c5662053 | 965 | if (s->hit && (s->session->cipher_id != c->id)) |
d02b48c6 | 966 | { |
346601bc BM |
967 | /* Workaround is now obsolete */ |
968 | #if 0 | |
58964a49 | 969 | if (!(s->options & |
d02b48c6 | 970 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
346601bc | 971 | #endif |
d02b48c6 | 972 | { |
58964a49 | 973 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
974 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
975 | goto f_err; | |
976 | } | |
977 | } | |
978 | s->s3->tmp.new_cipher=c; | |
4fe4c00e DSH |
979 | /* Don't digest cached records if TLS v1.2: we may need them for |
980 | * client authentication. | |
981 | */ | |
277f8a34 | 982 | if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s)) |
4d8da30f AP |
983 | { |
984 | al = SSL_AD_INTERNAL_ERROR; | |
6ba71a71 | 985 | goto f_err; |
4d8da30f | 986 | } |
d02b48c6 | 987 | /* lets get the compression algorithm */ |
dfeab068 | 988 | /* COMPRESSION */ |
09b6c2ef DSH |
989 | #ifdef OPENSSL_NO_COMP |
990 | if (*(p++) != 0) | |
991 | { | |
992 | al=SSL_AD_ILLEGAL_PARAMETER; | |
993 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
994 | goto f_err; | |
995 | } | |
4cba294d DSH |
996 | /* If compression is disabled we'd better not try to resume a session |
997 | * using compression. | |
998 | */ | |
999 | if (s->session->compress_meth != 0) | |
1000 | { | |
1001 | al=SSL_AD_INTERNAL_ERROR; | |
1002 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION); | |
1003 | goto f_err; | |
1004 | } | |
09b6c2ef | 1005 | #else |
d02b48c6 | 1006 | j= *(p++); |
1f67a3a9 | 1007 | if (s->hit && j != s->session->compress_meth) |
4cba294d DSH |
1008 | { |
1009 | al=SSL_AD_ILLEGAL_PARAMETER; | |
1010 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED); | |
1011 | goto f_err; | |
1012 | } | |
1013 | if (j == 0) | |
413c4f45 | 1014 | comp=NULL; |
4cba294d DSH |
1015 | else if (s->options & SSL_OP_NO_COMPRESSION) |
1016 | { | |
1017 | al=SSL_AD_ILLEGAL_PARAMETER; | |
1018 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED); | |
1019 | goto f_err; | |
1020 | } | |
413c4f45 MC |
1021 | else |
1022 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
1023 | ||
1024 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 1025 | { |
58964a49 | 1026 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1027 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
1028 | goto f_err; | |
1029 | } | |
413c4f45 MC |
1030 | else |
1031 | { | |
1032 | s->s3->tmp.new_compression=comp; | |
1033 | } | |
09b6c2ef | 1034 | #endif |
761772d7 | 1035 | |
ed3883d2 BM |
1036 | #ifndef OPENSSL_NO_TLSEXT |
1037 | /* TLS extensions*/ | |
10f99d7b | 1038 | if (s->version >= SSL3_VERSION) |
f1fd4544 BM |
1039 | { |
1040 | if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al)) | |
1041 | { | |
1042 | /* 'al' set by ssl_parse_serverhello_tlsext */ | |
36ca4ba6 | 1043 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT); |
ed3883d2 | 1044 | goto f_err; |
f1fd4544 | 1045 | } |
36ca4ba6 | 1046 | if (ssl_check_serverhello_tlsext(s) <= 0) |
58ece833 | 1047 | { |
a291745e | 1048 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT); |
58ece833 BM |
1049 | goto err; |
1050 | } | |
ed3883d2 | 1051 | } |
ed3883d2 | 1052 | #endif |
d02b48c6 RE |
1053 | |
1054 | if (p != (d+n)) | |
1055 | { | |
1056 | /* wrong packet length */ | |
58964a49 | 1057 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1058 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
f89af474 | 1059 | goto f_err; |
d02b48c6 RE |
1060 | } |
1061 | ||
1062 | return(1); | |
1063 | f_err: | |
1064 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1065 | err: | |
1066 | return(-1); | |
1067 | } | |
1068 | ||
36d16f8e | 1069 | int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
1070 | { |
1071 | int al,i,ok,ret= -1; | |
1072 | unsigned long n,nc,llen,l; | |
1073 | X509 *x=NULL; | |
875a644a RL |
1074 | const unsigned char *q,*p; |
1075 | unsigned char *d; | |
f73e07cf | 1076 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 1077 | SESS_CERT *sc; |
d02b48c6 | 1078 | EVP_PKEY *pkey=NULL; |
57376542 | 1079 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 | 1080 | |
36d16f8e | 1081 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1082 | SSL3_ST_CR_CERT_A, |
1083 | SSL3_ST_CR_CERT_B, | |
1084 | -1, | |
c0f5dd07 | 1085 | s->max_cert_list, |
d02b48c6 RE |
1086 | &ok); |
1087 | ||
1088 | if (!ok) return((int)n); | |
1089 | ||
fbe2c6b3 | 1090 | if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) || |
79363339 | 1091 | ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) && |
fbe2c6b3 | 1092 | (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE))) |
d02b48c6 RE |
1093 | { |
1094 | s->s3->tmp.reuse_message=1; | |
1095 | return(1); | |
1096 | } | |
1097 | ||
1098 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
1099 | { | |
58964a49 | 1100 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
1101 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
1102 | goto f_err; | |
1103 | } | |
875a644a | 1104 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1105 | |
f73e07cf | 1106 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
1107 | { |
1108 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1109 | goto err; | |
1110 | } | |
1111 | ||
1112 | n2l3(p,llen); | |
1113 | if (llen+3 != n) | |
1114 | { | |
58964a49 | 1115 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1116 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
1117 | goto f_err; | |
1118 | } | |
1119 | for (nc=0; nc<llen; ) | |
1120 | { | |
1121 | n2l3(p,l); | |
1122 | if ((l+nc+3) > llen) | |
1123 | { | |
58964a49 | 1124 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1125 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1126 | goto f_err; | |
1127 | } | |
1128 | ||
1129 | q=p; | |
1130 | x=d2i_X509(NULL,&q,l); | |
1131 | if (x == NULL) | |
1132 | { | |
58964a49 | 1133 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
1134 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
1135 | goto f_err; | |
1136 | } | |
1137 | if (q != (p+l)) | |
1138 | { | |
58964a49 | 1139 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1140 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1141 | goto f_err; | |
1142 | } | |
f73e07cf | 1143 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
1144 | { |
1145 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1146 | goto err; | |
1147 | } | |
1148 | x=NULL; | |
1149 | nc+=l+3; | |
1150 | p=q; | |
1151 | } | |
1152 | ||
1153 | i=ssl_verify_cert_chain(s,sk); | |
bab53405 | 1154 | if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0) |
82d5d46c | 1155 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 BM |
1156 | && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
1157 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
82d5d46c | 1158 | #endif /* OPENSSL_NO_KRB5 */ |
52b8dad8 | 1159 | ) |
d02b48c6 RE |
1160 | { |
1161 | al=ssl_verify_alarm_type(s->verify_result); | |
1162 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
1163 | goto f_err; | |
1164 | } | |
1fab73ac | 1165 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 1166 | |
b56bce4f BM |
1167 | sc=ssl_sess_cert_new(); |
1168 | if (sc == NULL) goto err; | |
d02b48c6 | 1169 | |
b56bce4f BM |
1170 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
1171 | s->session->sess_cert=sc; | |
d02b48c6 | 1172 | |
b56bce4f | 1173 | sc->cert_chain=sk; |
98e04f9e BM |
1174 | /* Inconsistency alert: cert_chain does include the peer's |
1175 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 1176 | x=sk_X509_value(sk,0); |
d02b48c6 | 1177 | sk=NULL; |
2a1ef754 | 1178 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
1179 | |
1180 | pkey=X509_get_pubkey(x); | |
1181 | ||
57376542 | 1182 | /* VRS: allow null cert if auth == KRB5 */ |
52b8dad8 BM |
1183 | need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
1184 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
1185 | ? 0 : 1; | |
f9b3bff6 RL |
1186 | |
1187 | #ifdef KSSL_DEBUG | |
8932b82f RL |
1188 | fprintf(stderr,"pkey,x = %p, %p\n", pkey,x); |
1189 | fprintf(stderr,"ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); | |
1190 | fprintf(stderr,"cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name, | |
52b8dad8 | 1191 | s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert); |
f9b3bff6 RL |
1192 | #endif /* KSSL_DEBUG */ |
1193 | ||
2a1ef754 | 1194 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
1195 | { |
1196 | x=NULL; | |
1197 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
1198 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
1199 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
1200 | goto f_err; |
1201 | } | |
1202 | ||
1203 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 1204 | if (need_cert && i < 0) |
d02b48c6 RE |
1205 | { |
1206 | x=NULL; | |
1207 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
1208 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
1209 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
1210 | goto f_err; |
1211 | } | |
1212 | ||
57376542 BM |
1213 | if (need_cert) |
1214 | { | |
1215 | sc->peer_cert_type=i; | |
1216 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1217 | /* Why would the following ever happen? | |
1218 | * We just created sc a couple of lines ago. */ | |
1219 | if (sc->peer_pkeys[i].x509 != NULL) | |
1220 | X509_free(sc->peer_pkeys[i].x509); | |
1221 | sc->peer_pkeys[i].x509=x; | |
1222 | sc->peer_key= &(sc->peer_pkeys[i]); | |
1223 | ||
1224 | if (s->session->peer != NULL) | |
1225 | X509_free(s->session->peer); | |
1226 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1227 | s->session->peer=x; | |
1228 | } | |
1229 | else | |
1230 | { | |
1231 | sc->peer_cert_type=i; | |
1232 | sc->peer_key= NULL; | |
1233 | ||
1234 | if (s->session->peer != NULL) | |
1235 | X509_free(s->session->peer); | |
1236 | s->session->peer=NULL; | |
1237 | } | |
0dd2254d | 1238 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
1239 | |
1240 | x=NULL; | |
1241 | ret=1; | |
1242 | ||
1243 | if (0) | |
1244 | { | |
1245 | f_err: | |
1246 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1247 | } | |
1248 | err: | |
a8236c8c DSH |
1249 | EVP_PKEY_free(pkey); |
1250 | X509_free(x); | |
f73e07cf | 1251 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
1252 | return(ret); |
1253 | } | |
1254 | ||
36d16f8e | 1255 | int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 1256 | { |
bc36ee62 | 1257 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1258 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
1259 | #endif | |
1260 | EVP_MD_CTX md_ctx; | |
1261 | unsigned char *param,*p; | |
0ed8e95c MC |
1262 | int al,j,ok; |
1263 | long i,param_len,n,alg_k,alg_a; | |
d02b48c6 | 1264 | EVP_PKEY *pkey=NULL; |
9472baae | 1265 | const EVP_MD *md = NULL; |
bc36ee62 | 1266 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1267 | RSA *rsa=NULL; |
79df9d62 | 1268 | #endif |
bc36ee62 | 1269 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 1270 | DH *dh=NULL; |
58964a49 | 1271 | #endif |
ea262260 BM |
1272 | #ifndef OPENSSL_NO_ECDH |
1273 | EC_KEY *ecdh = NULL; | |
1274 | BN_CTX *bn_ctx = NULL; | |
1275 | EC_POINT *srvr_ecpoint = NULL; | |
1276 | int curve_nid = 0; | |
1277 | int encoded_pt_len = 0; | |
1278 | #endif | |
d02b48c6 | 1279 | |
ef28c6d6 DSH |
1280 | EVP_MD_CTX_init(&md_ctx); |
1281 | ||
37a7cd1a BM |
1282 | /* use same message size as in ssl3_get_certificate_request() |
1283 | * as ServerKeyExchange message may be skipped */ | |
36d16f8e | 1284 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1285 | SSL3_ST_CR_KEY_EXCH_A, |
1286 | SSL3_ST_CR_KEY_EXCH_B, | |
1287 | -1, | |
c0f5dd07 | 1288 | s->max_cert_list, |
d02b48c6 | 1289 | &ok); |
d02b48c6 RE |
1290 | if (!ok) return((int)n); |
1291 | ||
ef28c6d6 DSH |
1292 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
1293 | ||
d02b48c6 RE |
1294 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) |
1295 | { | |
ef28c6d6 DSH |
1296 | /* |
1297 | * Can't skip server key exchange if this is an ephemeral | |
1298 | * ciphersuite. | |
1299 | */ | |
1300 | if (alg_k & (SSL_kEDH|SSL_kEECDH)) | |
1301 | { | |
1302 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE); | |
1303 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
1304 | goto f_err; | |
1305 | } | |
ddac1974 NL |
1306 | #ifndef OPENSSL_NO_PSK |
1307 | /* In plain PSK ciphersuite, ServerKeyExchange can be | |
1308 | omitted if no identity hint is sent. Set | |
1309 | session->sess_cert anyway to avoid problems | |
1310 | later.*/ | |
ef28c6d6 | 1311 | if (alg_k & SSL_kPSK) |
ddac1974 NL |
1312 | { |
1313 | s->session->sess_cert=ssl_sess_cert_new(); | |
1314 | if (s->ctx->psk_identity_hint) | |
1315 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1316 | s->ctx->psk_identity_hint = NULL; | |
1317 | } | |
1318 | #endif | |
d02b48c6 RE |
1319 | s->s3->tmp.reuse_message=1; |
1320 | return(1); | |
1321 | } | |
1322 | ||
48948d53 | 1323 | param=p=(unsigned char *)s->init_msg; |
9d5cceac | 1324 | if (s->session->sess_cert != NULL) |
d02b48c6 | 1325 | { |
bc36ee62 | 1326 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1327 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1328 | { |
b56bce4f BM |
1329 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1330 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1331 | } |
1332 | #endif | |
bc36ee62 | 1333 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1334 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1335 | { |
b56bce4f BM |
1336 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1337 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1338 | } |
ea262260 BM |
1339 | #endif |
1340 | #ifndef OPENSSL_NO_ECDH | |
1341 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1342 | { | |
1343 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1344 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1345 | } | |
d02b48c6 RE |
1346 | #endif |
1347 | } | |
1348 | else | |
1349 | { | |
b56bce4f | 1350 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1351 | } |
1352 | ||
0ed8e95c | 1353 | /* Total length of the parameters including the length prefix */ |
d02b48c6 | 1354 | param_len=0; |
0ed8e95c | 1355 | |
52b8dad8 | 1356 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; |
d02b48c6 | 1357 | |
0ed8e95c MC |
1358 | al=SSL_AD_DECODE_ERROR; |
1359 | ||
ddac1974 | 1360 | #ifndef OPENSSL_NO_PSK |
52b8dad8 BM |
1361 | if (alg_k & SSL_kPSK) |
1362 | { | |
ddac1974 NL |
1363 | char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1]; |
1364 | ||
0ed8e95c MC |
1365 | param_len = 2; |
1366 | if (param_len > n) | |
1367 | { | |
1368 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1369 | SSL_R_LENGTH_TOO_SHORT); | |
1370 | goto f_err; | |
1371 | } | |
ddac1974 | 1372 | n2s(p,i); |
0ed8e95c | 1373 | |
ddac1974 NL |
1374 | /* Store PSK identity hint for later use, hint is used |
1375 | * in ssl3_send_client_key_exchange. Assume that the | |
1376 | * maximum length of a PSK identity hint can be as | |
1377 | * long as the maximum length of a PSK identity. */ | |
1378 | if (i > PSK_MAX_IDENTITY_LEN) | |
1379 | { | |
0ed8e95c | 1380 | al=SSL_AD_HANDSHAKE_FAILURE; |
ddac1974 NL |
1381 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, |
1382 | SSL_R_DATA_LENGTH_TOO_LONG); | |
1383 | goto f_err; | |
1384 | } | |
0ed8e95c | 1385 | if (i > n - param_len) |
ddac1974 | 1386 | { |
ddac1974 NL |
1387 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, |
1388 | SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH); | |
1389 | goto f_err; | |
1390 | } | |
0ed8e95c MC |
1391 | param_len += i; |
1392 | ||
ddac1974 NL |
1393 | /* If received PSK identity hint contains NULL |
1394 | * characters, the hint is truncated from the first | |
1395 | * NULL. p may not be ending with NULL, so create a | |
1396 | * NULL-terminated string. */ | |
1397 | memcpy(tmp_id_hint, p, i); | |
1398 | memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i); | |
1399 | if (s->ctx->psk_identity_hint != NULL) | |
1400 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1401 | s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint); | |
1402 | if (s->ctx->psk_identity_hint == NULL) | |
1403 | { | |
0ed8e95c | 1404 | al=SSL_AD_HANDSHAKE_FAILURE; |
ddac1974 NL |
1405 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); |
1406 | goto f_err; | |
52b8dad8 | 1407 | } |
ddac1974 NL |
1408 | |
1409 | p+=i; | |
1410 | n-=param_len; | |
1411 | } | |
1412 | else | |
1413 | #endif /* !OPENSSL_NO_PSK */ | |
a149b246 BL |
1414 | #ifndef OPENSSL_NO_SRP |
1415 | if (alg_k & SSL_kSRP) | |
1416 | { | |
0ed8e95c | 1417 | param_len = 2; |
a149b246 BL |
1418 | if (param_len > n) |
1419 | { | |
0ed8e95c MC |
1420 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, |
1421 | SSL_R_LENGTH_TOO_SHORT); | |
1422 | goto f_err; | |
1423 | } | |
1424 | n2s(p,i); | |
1425 | ||
1426 | if (i > n - param_len) | |
1427 | { | |
a149b246 BL |
1428 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH); |
1429 | goto f_err; | |
1430 | } | |
0ed8e95c MC |
1431 | param_len += i; |
1432 | ||
a149b246 BL |
1433 | if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL))) |
1434 | { | |
1435 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1436 | goto err; | |
1437 | } | |
1438 | p+=i; | |
1439 | ||
0ed8e95c MC |
1440 | |
1441 | if (2 > n - param_len) | |
1442 | { | |
1443 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1444 | SSL_R_LENGTH_TOO_SHORT); | |
1445 | goto f_err; | |
1446 | } | |
1447 | param_len += 2; | |
1448 | ||
a149b246 | 1449 | n2s(p,i); |
0ed8e95c MC |
1450 | |
1451 | if (i > n - param_len) | |
a149b246 | 1452 | { |
a149b246 BL |
1453 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH); |
1454 | goto f_err; | |
1455 | } | |
0ed8e95c MC |
1456 | param_len += i; |
1457 | ||
a149b246 BL |
1458 | if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL))) |
1459 | { | |
1460 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1461 | goto err; | |
1462 | } | |
1463 | p+=i; | |
1464 | ||
0ed8e95c MC |
1465 | |
1466 | if (1 > n - param_len) | |
1467 | { | |
1468 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1469 | SSL_R_LENGTH_TOO_SHORT); | |
1470 | goto f_err; | |
1471 | } | |
1472 | param_len += 1; | |
1473 | ||
a149b246 BL |
1474 | i = (unsigned int)(p[0]); |
1475 | p++; | |
0ed8e95c MC |
1476 | |
1477 | if (i > n - param_len) | |
a149b246 | 1478 | { |
a149b246 BL |
1479 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH); |
1480 | goto f_err; | |
1481 | } | |
0ed8e95c MC |
1482 | param_len += i; |
1483 | ||
a149b246 BL |
1484 | if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL))) |
1485 | { | |
1486 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1487 | goto err; | |
1488 | } | |
1489 | p+=i; | |
1490 | ||
0ed8e95c MC |
1491 | if (2 > n - param_len) |
1492 | { | |
1493 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1494 | SSL_R_LENGTH_TOO_SHORT); | |
1495 | goto f_err; | |
1496 | } | |
1497 | param_len += 2; | |
1498 | ||
a149b246 | 1499 | n2s(p,i); |
0ed8e95c MC |
1500 | |
1501 | if (i > n - param_len) | |
a149b246 | 1502 | { |
a149b246 BL |
1503 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH); |
1504 | goto f_err; | |
1505 | } | |
0ed8e95c MC |
1506 | param_len += i; |
1507 | ||
a149b246 BL |
1508 | if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL))) |
1509 | { | |
1510 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1511 | goto err; | |
1512 | } | |
1513 | p+=i; | |
1514 | n-=param_len; | |
1515 | ||
d15d17bb DSH |
1516 | if (!srp_verify_server_param(s, &al)) |
1517 | { | |
1518 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_PARAMETERS); | |
1519 | goto f_err; | |
1520 | } | |
1521 | ||
a149b246 BL |
1522 | /* We must check if there is a certificate */ |
1523 | #ifndef OPENSSL_NO_RSA | |
1524 | if (alg_a & SSL_aRSA) | |
1525 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); | |
1526 | #else | |
1527 | if (0) | |
1528 | ; | |
1529 | #endif | |
1530 | #ifndef OPENSSL_NO_DSA | |
1531 | else if (alg_a & SSL_aDSS) | |
1532 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); | |
1533 | #endif | |
1534 | } | |
1535 | else | |
1536 | #endif /* !OPENSSL_NO_SRP */ | |
bc36ee62 | 1537 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1538 | if (alg_k & SSL_kRSA) |
d02b48c6 | 1539 | { |
37580f43 DSH |
1540 | /* Temporary RSA keys only allowed in export ciphersuites */ |
1541 | if (!SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)) | |
1542 | { | |
1543 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1544 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNEXPECTED_MESSAGE); | |
1545 | goto f_err; | |
1546 | } | |
d02b48c6 RE |
1547 | if ((rsa=RSA_new()) == NULL) |
1548 | { | |
1549 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1550 | goto err; | |
1551 | } | |
0ed8e95c MC |
1552 | |
1553 | param_len = 2; | |
d02b48c6 RE |
1554 | if (param_len > n) |
1555 | { | |
0ed8e95c MC |
1556 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, |
1557 | SSL_R_LENGTH_TOO_SHORT); | |
1558 | goto f_err; | |
1559 | } | |
1560 | n2s(p,i); | |
1561 | ||
1562 | if (i > n - param_len) | |
1563 | { | |
d02b48c6 RE |
1564 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1565 | goto f_err; | |
1566 | } | |
0ed8e95c MC |
1567 | param_len += i; |
1568 | ||
d02b48c6 RE |
1569 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) |
1570 | { | |
1571 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1572 | goto err; | |
1573 | } | |
1574 | p+=i; | |
1575 | ||
0ed8e95c MC |
1576 | if (2 > n - param_len) |
1577 | { | |
1578 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1579 | SSL_R_LENGTH_TOO_SHORT); | |
1580 | goto f_err; | |
1581 | } | |
1582 | param_len += 2; | |
1583 | ||
d02b48c6 | 1584 | n2s(p,i); |
0ed8e95c MC |
1585 | |
1586 | if (i > n - param_len) | |
d02b48c6 | 1587 | { |
d02b48c6 RE |
1588 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1589 | goto f_err; | |
1590 | } | |
0ed8e95c MC |
1591 | param_len += i; |
1592 | ||
d02b48c6 RE |
1593 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) |
1594 | { | |
1595 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1596 | goto err; | |
1597 | } | |
1598 | p+=i; | |
1599 | n-=param_len; | |
1600 | ||
d02b48c6 | 1601 | /* this should be because we are using an export cipher */ |
52b8dad8 | 1602 | if (alg_a & SSL_aRSA) |
b56bce4f | 1603 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1604 | else |
1605 | { | |
5277d7cb | 1606 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1607 | goto err; |
1608 | } | |
b56bce4f | 1609 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1610 | rsa=NULL; |
d02b48c6 | 1611 | } |
bc36ee62 | 1612 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1613 | if (0) |
1614 | ; | |
d02b48c6 | 1615 | #endif |
bc36ee62 | 1616 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 1617 | else if (alg_k & SSL_kEDH) |
d02b48c6 RE |
1618 | { |
1619 | if ((dh=DH_new()) == NULL) | |
1620 | { | |
1621 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1622 | goto err; | |
1623 | } | |
0ed8e95c MC |
1624 | |
1625 | param_len = 2; | |
d02b48c6 RE |
1626 | if (param_len > n) |
1627 | { | |
0ed8e95c MC |
1628 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, |
1629 | SSL_R_LENGTH_TOO_SHORT); | |
1630 | goto f_err; | |
1631 | } | |
1632 | n2s(p,i); | |
1633 | ||
1634 | if (i > n - param_len) | |
1635 | { | |
d02b48c6 RE |
1636 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1637 | goto f_err; | |
1638 | } | |
0ed8e95c MC |
1639 | param_len += i; |
1640 | ||
d02b48c6 RE |
1641 | if (!(dh->p=BN_bin2bn(p,i,NULL))) |
1642 | { | |
1643 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1644 | goto err; | |
1645 | } | |
1646 | p+=i; | |
1647 | ||
0ed8e95c MC |
1648 | if (2 > n - param_len) |
1649 | { | |
1650 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1651 | SSL_R_LENGTH_TOO_SHORT); | |
1652 | goto f_err; | |
1653 | } | |
1654 | param_len += 2; | |
1655 | ||
d02b48c6 | 1656 | n2s(p,i); |
0ed8e95c MC |
1657 | |
1658 | if (i > n - param_len) | |
d02b48c6 | 1659 | { |
d02b48c6 RE |
1660 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1661 | goto f_err; | |
1662 | } | |
0ed8e95c MC |
1663 | param_len += i; |
1664 | ||
d02b48c6 RE |
1665 | if (!(dh->g=BN_bin2bn(p,i,NULL))) |
1666 | { | |
1667 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1668 | goto err; | |
1669 | } | |
1670 | p+=i; | |
1671 | ||
0ed8e95c MC |
1672 | if (2 > n - param_len) |
1673 | { | |
1674 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1675 | SSL_R_LENGTH_TOO_SHORT); | |
1676 | goto f_err; | |
1677 | } | |
1678 | param_len += 2; | |
1679 | ||
d02b48c6 | 1680 | n2s(p,i); |
0ed8e95c MC |
1681 | |
1682 | if (i > n - param_len) | |
d02b48c6 | 1683 | { |
d02b48c6 RE |
1684 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1685 | goto f_err; | |
1686 | } | |
0ed8e95c MC |
1687 | param_len += i; |
1688 | ||
d02b48c6 RE |
1689 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) |
1690 | { | |
1691 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1692 | goto err; | |
1693 | } | |
1694 | p+=i; | |
1695 | n-=param_len; | |
1696 | ||
bc36ee62 | 1697 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1698 | if (alg_a & SSL_aRSA) |
b56bce4f | 1699 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1700 | #else |
1701 | if (0) | |
1702 | ; | |
d02b48c6 | 1703 | #endif |
bc36ee62 | 1704 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 1705 | else if (alg_a & SSL_aDSS) |
b56bce4f | 1706 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1707 | #endif |
1708 | /* else anonymous DH, so no certificate or pkey. */ | |
1709 | ||
b56bce4f | 1710 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1711 | dh=NULL; |
d02b48c6 | 1712 | } |
52b8dad8 | 1713 | else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd)) |
d02b48c6 | 1714 | { |
58964a49 | 1715 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1716 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1717 | goto f_err; | |
1718 | } | |
bc36ee62 | 1719 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1720 | |
1721 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 1722 | else if (alg_k & SSL_kEECDH) |
ea262260 | 1723 | { |
9dd84053 NL |
1724 | EC_GROUP *ngroup; |
1725 | const EC_GROUP *group; | |
1726 | ||
ea262260 BM |
1727 | if ((ecdh=EC_KEY_new()) == NULL) |
1728 | { | |
1729 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1730 | goto err; | |
1731 | } | |
1732 | ||
1733 | /* Extract elliptic curve parameters and the | |
1734 | * server's ephemeral ECDH public key. | |
1735 | * Keep accumulating lengths of various components in | |
1736 | * param_len and make sure it never exceeds n. | |
1737 | */ | |
1738 | ||
1739 | /* XXX: For now we only support named (not generic) curves | |
0ed8e95c MC |
1740 | * and the ECParameters in this case is just three bytes. We |
1741 | * also need one byte for the length of the encoded point | |
ea262260 | 1742 | */ |
0ed8e95c MC |
1743 | param_len=4; |
1744 | if (param_len > n) | |
1745 | { | |
1746 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1747 | SSL_R_LENGTH_TOO_SHORT); | |
1748 | goto f_err; | |
1749 | } | |
1750 | ||
1751 | if ((*p != NAMED_CURVE_TYPE) || | |
1752 | ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)) | |
ea262260 BM |
1753 | { |
1754 | al=SSL_AD_INTERNAL_ERROR; | |
1755 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1756 | goto f_err; | |
1757 | } | |
1758 | ||
9dd84053 NL |
1759 | ngroup = EC_GROUP_new_by_curve_name(curve_nid); |
1760 | if (ngroup == NULL) | |
1761 | { | |
1762 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1763 | goto err; | |
1764 | } | |
1765 | if (EC_KEY_set_group(ecdh, ngroup) == 0) | |
ea262260 BM |
1766 | { |
1767 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1768 | goto err; | |
1769 | } | |
9dd84053 NL |
1770 | EC_GROUP_free(ngroup); |
1771 | ||
1772 | group = EC_KEY_get0_group(ecdh); | |
ea262260 BM |
1773 | |
1774 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
9dd84053 | 1775 | (EC_GROUP_get_degree(group) > 163)) |
ea262260 BM |
1776 | { |
1777 | al=SSL_AD_EXPORT_RESTRICTION; | |
1778 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1779 | goto f_err; | |
1780 | } | |
1781 | ||
d56349a2 | 1782 | p+=3; |
ea262260 BM |
1783 | |
1784 | /* Next, get the encoded ECPoint */ | |
9dd84053 | 1785 | if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) || |
ea262260 BM |
1786 | ((bn_ctx = BN_CTX_new()) == NULL)) |
1787 | { | |
1788 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1789 | goto err; | |
1790 | } | |
1791 | ||
1792 | encoded_pt_len = *p; /* length of encoded point */ | |
1793 | p+=1; | |
0ed8e95c MC |
1794 | |
1795 | if ((encoded_pt_len > n - param_len) || | |
9dd84053 | 1796 | (EC_POINT_oct2point(group, srvr_ecpoint, |
ea262260 BM |
1797 | p, encoded_pt_len, bn_ctx) == 0)) |
1798 | { | |
ea262260 BM |
1799 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); |
1800 | goto f_err; | |
1801 | } | |
0ed8e95c | 1802 | param_len += encoded_pt_len; |
ea262260 BM |
1803 | |
1804 | n-=param_len; | |
1805 | p+=encoded_pt_len; | |
1806 | ||
1807 | /* The ECC/TLS specification does not mention | |
1808 | * the use of DSA to sign ECParameters in the server | |
1809 | * key exchange message. We do support RSA and ECDSA. | |
1810 | */ | |
1811 | if (0) ; | |
1812 | #ifndef OPENSSL_NO_RSA | |
52b8dad8 | 1813 | else if (alg_a & SSL_aRSA) |
ea262260 BM |
1814 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
1815 | #endif | |
1816 | #ifndef OPENSSL_NO_ECDSA | |
52b8dad8 | 1817 | else if (alg_a & SSL_aECDSA) |
ea262260 BM |
1818 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); |
1819 | #endif | |
1820 | /* else anonymous ECDH, so no certificate or pkey. */ | |
9dd84053 | 1821 | EC_KEY_set_public_key(ecdh, srvr_ecpoint); |
ea262260 BM |
1822 | s->session->sess_cert->peer_ecdh_tmp=ecdh; |
1823 | ecdh=NULL; | |
1824 | BN_CTX_free(bn_ctx); | |
3fa29765 | 1825 | bn_ctx = NULL; |
9dd84053 | 1826 | EC_POINT_free(srvr_ecpoint); |
ea262260 BM |
1827 | srvr_ecpoint = NULL; |
1828 | } | |
52b8dad8 | 1829 | else if (alg_k) |
ea262260 BM |
1830 | { |
1831 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1832 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1833 | goto f_err; | |
1834 | } | |
1835 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 | 1836 | |
d02b48c6 RE |
1837 | |
1838 | /* p points to the next byte, there are 'n' bytes left */ | |
1839 | ||
d02b48c6 RE |
1840 | /* if it was signed, check the signature */ |
1841 | if (pkey != NULL) | |
1842 | { | |
277f8a34 | 1843 | if (TLS1_get_version(s) >= TLS1_2_VERSION) |
9472baae | 1844 | { |
0ed8e95c MC |
1845 | int sigalg; |
1846 | if (2 > n) | |
1847 | { | |
1848 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1849 | SSL_R_LENGTH_TOO_SHORT); | |
1850 | goto f_err; | |
1851 | } | |
1852 | ||
1853 | sigalg = tls12_get_sigid(pkey); | |
9472baae DSH |
1854 | /* Should never happen */ |
1855 | if (sigalg == -1) | |
1856 | { | |
1857 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); | |
1858 | goto err; | |
1859 | } | |
1860 | /* Check key type is consistent with signature */ | |
1861 | if (sigalg != (int)p[1]) | |
1862 | { | |
1863 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE); | |
1864 | al=SSL_AD_DECODE_ERROR; | |
1865 | goto f_err; | |
1866 | } | |
1867 | md = tls12_get_hash(p[0]); | |
1868 | if (md == NULL) | |
1869 | { | |
1870 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST); | |
9472baae DSH |
1871 | goto f_err; |
1872 | } | |
1873 | #ifdef SSL_DEBUG | |
1874 | fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md)); | |
1875 | #endif | |
1876 | p += 2; | |
1877 | n -= 2; | |
1878 | } | |
1879 | else | |
1880 | md = EVP_sha1(); | |
0ed8e95c MC |
1881 | |
1882 | if (2 > n) | |
1883 | { | |
1884 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1885 | SSL_R_LENGTH_TOO_SHORT); | |
1886 | goto f_err; | |
1887 | } | |
d02b48c6 RE |
1888 | n2s(p,i); |
1889 | n-=2; | |
1890 | j=EVP_PKEY_size(pkey); | |
1891 | ||
0ed8e95c | 1892 | /* Check signature length. If n is 0 then signature is empty */ |
d02b48c6 RE |
1893 | if ((i != n) || (n > j) || (n <= 0)) |
1894 | { | |
1895 | /* wrong packet length */ | |
d02b48c6 | 1896 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1897 | goto f_err; |
d02b48c6 RE |
1898 | } |
1899 | ||
bc36ee62 | 1900 | #ifndef OPENSSL_NO_RSA |
277f8a34 | 1901 | if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION) |
d02b48c6 RE |
1902 | { |
1903 | int num; | |
81e3a605 | 1904 | unsigned int size; |
d02b48c6 RE |
1905 | |
1906 | j=0; | |
1907 | q=md_buf; | |
1908 | for (num=2; num > 0; num--) | |
1909 | { | |
7043fa70 DSH |
1910 | EVP_MD_CTX_set_flags(&md_ctx, |
1911 | EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); | |
20d2186c DSH |
1912 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1913 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1914 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1915 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1916 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
81e3a605 TH |
1917 | EVP_DigestFinal_ex(&md_ctx,q,&size); |
1918 | q+=size; | |
1919 | j+=size; | |
d02b48c6 | 1920 | } |
1c80019a DSH |
1921 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1922 | pkey->pkey.rsa); | |
1923 | if (i < 0) | |
d02b48c6 | 1924 | { |
58964a49 | 1925 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1926 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1927 | goto f_err; | |
1928 | } | |
1c80019a | 1929 | if (i == 0) |
d02b48c6 RE |
1930 | { |
1931 | /* bad signature */ | |
58964a49 | 1932 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1933 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1934 | goto f_err; | |
1935 | } | |
1936 | } | |
1937 | else | |
1938 | #endif | |
ea262260 | 1939 | { |
9472baae | 1940 | EVP_VerifyInit_ex(&md_ctx, md, NULL); |
ea262260 BM |
1941 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1942 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1943 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
bab53405 | 1944 | if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0) |
ea262260 BM |
1945 | { |
1946 | /* bad signature */ | |
1947 | al=SSL_AD_DECRYPT_ERROR; | |
1948 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1949 | goto f_err; | |
1950 | } | |
1951 | } | |
d02b48c6 RE |
1952 | } |
1953 | else | |
1954 | { | |
30fbe92c DSH |
1955 | /* aNULL, aSRP or kPSK do not need public keys */ |
1956 | if (!(alg_a & (SSL_aNULL|SSL_aSRP)) && !(alg_k & SSL_kPSK)) | |
d02b48c6 | 1957 | { |
5277d7cb | 1958 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1959 | goto err; |
1960 | } | |
ddac1974 | 1961 | /* still data left over */ |
d02b48c6 RE |
1962 | if (n != 0) |
1963 | { | |
d02b48c6 RE |
1964 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1965 | goto f_err; | |
1966 | } | |
1967 | } | |
a8236c8c | 1968 | EVP_PKEY_free(pkey); |
dbad1690 | 1969 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1970 | return(1); |
1971 | f_err: | |
1972 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1973 | err: | |
a8236c8c | 1974 | EVP_PKEY_free(pkey); |
bc36ee62 | 1975 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1976 | if (rsa != NULL) |
1977 | RSA_free(rsa); | |
1978 | #endif | |
bc36ee62 | 1979 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1980 | if (dh != NULL) |
1981 | DH_free(dh); | |
ea262260 BM |
1982 | #endif |
1983 | #ifndef OPENSSL_NO_ECDH | |
1984 | BN_CTX_free(bn_ctx); | |
1985 | EC_POINT_free(srvr_ecpoint); | |
1986 | if (ecdh != NULL) | |
1987 | EC_KEY_free(ecdh); | |
6b521df3 | 1988 | #endif |
dbad1690 | 1989 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1990 | return(-1); |
1991 | } | |
1992 | ||
36d16f8e | 1993 | int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1994 | { |
1995 | int ok,ret=0; | |
58964a49 | 1996 | unsigned long n,nc,l; |
376838a6 | 1997 | unsigned int llen, ctype_num,i; |
d02b48c6 | 1998 | X509_NAME *xn=NULL; |
875a644a RL |
1999 | const unsigned char *p,*q; |
2000 | unsigned char *d; | |
f73e07cf | 2001 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 | 2002 | |
36d16f8e | 2003 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
2004 | SSL3_ST_CR_CERT_REQ_A, |
2005 | SSL3_ST_CR_CERT_REQ_B, | |
2006 | -1, | |
c0f5dd07 | 2007 | s->max_cert_list, |
d02b48c6 RE |
2008 | &ok); |
2009 | ||
2010 | if (!ok) return((int)n); | |
2011 | ||
2012 | s->s3->tmp.cert_req=0; | |
2013 | ||
2014 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
2015 | { | |
2016 | s->s3->tmp.reuse_message=1; | |
4fe4c00e DSH |
2017 | /* If we get here we don't need any cached handshake records |
2018 | * as we wont be doing client auth. | |
2019 | */ | |
2020 | if (s->s3->handshake_buffer) | |
2021 | { | |
2022 | if (!ssl3_digest_cached_records(s)) | |
2023 | goto err; | |
2024 | } | |
d02b48c6 RE |
2025 | return(1); |
2026 | } | |
2027 | ||
2028 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
2029 | { | |
58964a49 | 2030 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
2031 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
2032 | goto err; | |
2033 | } | |
2034 | ||
58964a49 RE |
2035 | /* TLS does not like anon-DH with client cert */ |
2036 | if (s->version > SSL3_VERSION) | |
2037 | { | |
52b8dad8 | 2038 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) |
58964a49 RE |
2039 | { |
2040 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
2041 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
2042 | goto err; | |
2043 | } | |
2044 | } | |
2045 | ||
875a644a | 2046 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 2047 | |
f73e07cf | 2048 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
2049 | { |
2050 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
2051 | goto err; | |
2052 | } | |
2053 | ||
2054 | /* get the certificate types */ | |
2055 | ctype_num= *(p++); | |
2056 | if (ctype_num > SSL3_CT_NUMBER) | |
2057 | ctype_num=SSL3_CT_NUMBER; | |
2058 | for (i=0; i<ctype_num; i++) | |
2059 | s->s3->tmp.ctype[i]= p[i]; | |
2060 | p+=ctype_num; | |
277f8a34 | 2061 | if (TLS1_get_version(s) >= TLS1_2_VERSION) |
9472baae | 2062 | { |
376838a6 DSH |
2063 | n2s(p, llen); |
2064 | /* Check we have enough room for signature algorithms and | |
2065 | * following length value. | |
2066 | */ | |
2067 | if ((unsigned long)(p - d + llen + 2) > n) | |
2068 | { | |
2069 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); | |
2070 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG); | |
2071 | goto err; | |
2072 | } | |
2073 | if ((llen & 1) || !tls1_process_sigalgs(s, p, llen)) | |
2074 | { | |
2075 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); | |
2076 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR); | |
2077 | goto err; | |
2078 | } | |
2079 | p += llen; | |
9472baae | 2080 | } |
d02b48c6 RE |
2081 | |
2082 | /* get the CA RDNs */ | |
2083 | n2s(p,llen); | |
dfeab068 RE |
2084 | #if 0 |
2085 | { | |
2086 | FILE *out; | |
2087 | out=fopen("/tmp/vsign.der","w"); | |
2088 | fwrite(p,1,llen,out); | |
2089 | fclose(out); | |
2090 | } | |
2091 | #endif | |
2092 | ||
376838a6 | 2093 | if ((unsigned long)(p - d + llen) != n) |
d02b48c6 | 2094 | { |
58964a49 | 2095 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2096 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
2097 | goto err; | |
2098 | } | |
2099 | ||
2100 | for (nc=0; nc<llen; ) | |
2101 | { | |
2102 | n2s(p,l); | |
2103 | if ((l+nc+2) > llen) | |
2104 | { | |
58964a49 | 2105 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 2106 | goto cont; /* netscape bugs */ |
58964a49 | 2107 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2108 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
2109 | goto err; | |
2110 | } | |
2111 | ||
2112 | q=p; | |
2113 | ||
2114 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
2115 | { | |
657e60fa | 2116 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 2117 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
2118 | goto cont; |
2119 | else | |
2120 | { | |
58964a49 | 2121 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2122 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
2123 | goto err; | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | if (q != (p+l)) | |
2128 | { | |
58964a49 | 2129 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2130 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
2131 | goto err; | |
2132 | } | |
f73e07cf | 2133 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
2134 | { |
2135 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
2136 | goto err; | |
2137 | } | |
2138 | ||
2139 | p+=l; | |
2140 | nc+=l+2; | |
2141 | } | |
2142 | ||
2143 | if (0) | |
2144 | { | |
2145 | cont: | |
2146 | ERR_clear_error(); | |
2147 | } | |
2148 | ||
657e60fa | 2149 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
2150 | s->s3->tmp.cert_req=1; |
2151 | s->s3->tmp.ctype_num=ctype_num; | |
2152 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 2153 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
2154 | s->s3->tmp.ca_names=ca_sk; |
2155 | ca_sk=NULL; | |
2156 | ||
2157 | ret=1; | |
2158 | err: | |
f73e07cf | 2159 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
2160 | return(ret); |
2161 | } | |
2162 | ||
ccd86b68 | 2163 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
2164 | { |
2165 | return(X509_NAME_cmp(*a,*b)); | |
2166 | } | |
6434abbf DSH |
2167 | #ifndef OPENSSL_NO_TLSEXT |
2168 | int ssl3_get_new_session_ticket(SSL *s) | |
2169 | { | |
2170 | int ok,al,ret=0, ticklen; | |
2171 | long n; | |
2172 | const unsigned char *p; | |
2173 | unsigned char *d; | |
2174 | ||
2175 | n=s->method->ssl_get_message(s, | |
2176 | SSL3_ST_CR_SESSION_TICKET_A, | |
2177 | SSL3_ST_CR_SESSION_TICKET_B, | |
15d717f5 | 2178 | SSL3_MT_NEWSESSION_TICKET, |
6434abbf DSH |
2179 | 16384, |
2180 | &ok); | |
2181 | ||
2182 | if (!ok) | |
2183 | return((int)n); | |
2184 | ||
6434abbf DSH |
2185 | if (n < 6) |
2186 | { | |
2187 | /* need at least ticket_lifetime_hint + ticket length */ | |
f89af474 | 2188 | al = SSL_AD_DECODE_ERROR; |
6434abbf DSH |
2189 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); |
2190 | goto f_err; | |
2191 | } | |
593222af | 2192 | |
6434abbf DSH |
2193 | p=d=(unsigned char *)s->init_msg; |
2194 | n2l(p, s->session->tlsext_tick_lifetime_hint); | |
2195 | n2s(p, ticklen); | |
2196 | /* ticket_lifetime_hint + ticket_length + ticket */ | |
2197 | if (ticklen + 6 != n) | |
2198 | { | |
f89af474 | 2199 | al = SSL_AD_DECODE_ERROR; |
761772d7 | 2200 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); |
6434abbf DSH |
2201 | goto f_err; |
2202 | } | |
2203 | if (s->session->tlsext_tick) | |
2204 | { | |
2205 | OPENSSL_free(s->session->tlsext_tick); | |
2206 | s->session->tlsext_ticklen = 0; | |
2207 | } | |
2208 | s->session->tlsext_tick = OPENSSL_malloc(ticklen); | |
2209 | if (!s->session->tlsext_tick) | |
2210 | { | |
761772d7 | 2211 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE); |
6434abbf DSH |
2212 | goto err; |
2213 | } | |
2214 | memcpy(s->session->tlsext_tick, p, ticklen); | |
2215 | s->session->tlsext_ticklen = ticklen; | |
9bdedec0 | 2216 | /* There are two ways to detect a resumed ticket session. |
036b3f33 DSH |
2217 | * One is to set an appropriate session ID and then the server |
2218 | * must return a match in ServerHello. This allows the normal | |
2219 | * client session ID matching to work and we know much | |
2220 | * earlier that the ticket has been accepted. | |
2221 | * | |
2222 | * The other way is to set zero length session ID when the | |
2223 | * ticket is presented and rely on the handshake to determine | |
2224 | * session resumption. | |
2225 | * | |
2226 | * We choose the former approach because this fits in with | |
2227 | * assumptions elsewhere in OpenSSL. The session ID is set | |
2228 | * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the | |
2229 | * ticket. | |
2230 | */ | |
2231 | EVP_Digest(p, ticklen, | |
2232 | s->session->session_id, &s->session->session_id_length, | |
2233 | #ifndef OPENSSL_NO_SHA256 | |
2234 | EVP_sha256(), NULL); | |
2235 | #else | |
2236 | EVP_sha1(), NULL); | |
2237 | #endif | |
6434abbf DSH |
2238 | ret=1; |
2239 | return(ret); | |
2240 | f_err: | |
2241 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
2242 | err: | |
2243 | return(-1); | |
2244 | } | |
67c8e7f4 DSH |
2245 | |
2246 | int ssl3_get_cert_status(SSL *s) | |
2247 | { | |
2248 | int ok, al; | |
aff686df | 2249 | unsigned long resplen,n; |
67c8e7f4 DSH |
2250 | const unsigned char *p; |
2251 | ||
2252 | n=s->method->ssl_get_message(s, | |
2253 | SSL3_ST_CR_CERT_STATUS_A, | |
2254 | SSL3_ST_CR_CERT_STATUS_B, | |
2255 | SSL3_MT_CERTIFICATE_STATUS, | |
2256 | 16384, | |
2257 | &ok); | |
2258 | ||
2259 | if (!ok) return((int)n); | |
2260 | if (n < 4) | |
2261 | { | |
2262 | /* need at least status type + length */ | |
2263 | al = SSL_AD_DECODE_ERROR; | |
2264 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); | |
2265 | goto f_err; | |
2266 | } | |
2267 | p = (unsigned char *)s->init_msg; | |
2268 | if (*p++ != TLSEXT_STATUSTYPE_ocsp) | |
2269 | { | |
2270 | al = SSL_AD_DECODE_ERROR; | |
2271 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE); | |
2272 | goto f_err; | |
2273 | } | |
2274 | n2l3(p, resplen); | |
2275 | if (resplen + 4 != n) | |
2276 | { | |
2277 | al = SSL_AD_DECODE_ERROR; | |
2278 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); | |
2279 | goto f_err; | |
2280 | } | |
2281 | if (s->tlsext_ocsp_resp) | |
2282 | OPENSSL_free(s->tlsext_ocsp_resp); | |
2283 | s->tlsext_ocsp_resp = BUF_memdup(p, resplen); | |
2284 | if (!s->tlsext_ocsp_resp) | |
2285 | { | |
2286 | al = SSL_AD_INTERNAL_ERROR; | |
2287 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE); | |
2288 | goto f_err; | |
2289 | } | |
2290 | s->tlsext_ocsp_resplen = resplen; | |
2291 | if (s->ctx->tlsext_status_cb) | |
2292 | { | |
2293 | int ret; | |
2294 | ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg); | |
2295 | if (ret == 0) | |
2296 | { | |
2297 | al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE; | |
2298 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE); | |
2299 | goto f_err; | |
2300 | } | |
2301 | if (ret < 0) | |
2302 | { | |
2303 | al = SSL_AD_INTERNAL_ERROR; | |
2304 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE); | |
2305 | goto f_err; | |
2306 | } | |
2307 | } | |
2308 | return 1; | |
2309 | f_err: | |
2310 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
2311 | return(-1); | |
2312 | } | |
6434abbf | 2313 | #endif |
d02b48c6 | 2314 | |
36d16f8e | 2315 | int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
2316 | { |
2317 | int ok,ret=0; | |
2318 | long n; | |
2319 | ||
36d16f8e | 2320 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
2321 | SSL3_ST_CR_SRVR_DONE_A, |
2322 | SSL3_ST_CR_SRVR_DONE_B, | |
2323 | SSL3_MT_SERVER_DONE, | |
2324 | 30, /* should be very small, like 0 :-) */ | |
2325 | &ok); | |
2326 | ||
2327 | if (!ok) return((int)n); | |
2328 | if (n > 0) | |
2329 | { | |
2330 | /* should contain no data */ | |
58964a49 | 2331 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 2332 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 2333 | return -1; |
d02b48c6 RE |
2334 | } |
2335 | ret=1; | |
2336 | return(ret); | |
2337 | } | |
2338 | ||
176f31dd | 2339 | |
36d16f8e | 2340 | int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 2341 | { |
79df9d62 | 2342 | unsigned char *p,*d; |
d02b48c6 | 2343 | int n; |
52b8dad8 | 2344 | unsigned long alg_k; |
bc36ee62 | 2345 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 2346 | unsigned char *q; |
d02b48c6 | 2347 | EVP_PKEY *pkey=NULL; |
79df9d62 | 2348 | #endif |
bc36ee62 | 2349 | #ifndef OPENSSL_NO_KRB5 |
57376542 | 2350 | KSSL_ERR kssl_err; |
bc36ee62 | 2351 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
2352 | #ifndef OPENSSL_NO_ECDH |
2353 | EC_KEY *clnt_ecdh = NULL; | |
9dd84053 | 2354 | const EC_POINT *srvr_ecpoint = NULL; |
ea262260 BM |
2355 | EVP_PKEY *srvr_pub_pkey = NULL; |
2356 | unsigned char *encodedPoint = NULL; | |
2357 | int encoded_pt_len = 0; | |
2358 | BN_CTX * bn_ctx = NULL; | |
2359 | #endif | |
d02b48c6 RE |
2360 | |
2361 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
2362 | { | |
2363 | d=(unsigned char *)s->init_buf->data; | |
2364 | p= &(d[4]); | |
2365 | ||
52b8dad8 | 2366 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
d02b48c6 | 2367 | |
57376542 BM |
2368 | /* Fool emacs indentation */ |
2369 | if (0) {} | |
bc36ee62 | 2370 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 2371 | else if (alg_k & SSL_kRSA) |
d02b48c6 RE |
2372 | { |
2373 | RSA *rsa; | |
dfeab068 | 2374 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 2375 | |
88ae012c EK |
2376 | if (s->session->sess_cert == NULL) |
2377 | { | |
2378 | /* We should always have a server certificate with SSL_kRSA. */ | |
2379 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); | |
2380 | goto err; | |
2381 | } | |
2382 | ||
b56bce4f BM |
2383 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
2384 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
2385 | else |
2386 | { | |
b56bce4f | 2387 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
2388 | if ((pkey == NULL) || |
2389 | (pkey->type != EVP_PKEY_RSA) || | |
2390 | (pkey->pkey.rsa == NULL)) | |
2391 | { | |
5277d7cb | 2392 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2393 | goto err; |
2394 | } | |
2395 | rsa=pkey->pkey.rsa; | |
50596582 | 2396 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2397 | } |
2398 | ||
413c4f45 MC |
2399 | tmp_buf[0]=s->client_version>>8; |
2400 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 2401 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 2402 | goto err; |
d02b48c6 | 2403 | |
54a656ef | 2404 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 2405 | |
58964a49 RE |
2406 | q=p; |
2407 | /* Fix buf for TLS and beyond */ | |
2408 | if (s->version > SSL3_VERSION) | |
2409 | p+=2; | |
54a656ef | 2410 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 2411 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
2412 | #ifdef PKCS1_CHECK |
2413 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
2414 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
2415 | #endif | |
d02b48c6 RE |
2416 | if (n <= 0) |
2417 | { | |
2418 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
2419 | goto err; | |
2420 | } | |
2421 | ||
58964a49 RE |
2422 | /* Fix buf for TLS and beyond */ |
2423 | if (s->version > SSL3_VERSION) | |
2424 | { | |
2425 | s2n(n,q); | |
2426 | n+=2; | |
2427 | } | |
2428 | ||
d02b48c6 | 2429 | s->session->master_key_length= |
58964a49 | 2430 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 2431 | s->session->master_key, |
54a656ef | 2432 | tmp_buf,sizeof tmp_buf); |
4579924b | 2433 | OPENSSL_cleanse(tmp_buf,sizeof tmp_buf); |
d02b48c6 | 2434 | } |
f9b3bff6 | 2435 | #endif |
bc36ee62 | 2436 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 | 2437 | else if (alg_k & SSL_kKRB5) |
57376542 BM |
2438 | { |
2439 | krb5_error_code krb5rc; | |
2440 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
2441 | /* krb5_data krb5_ap_req; */ | |
2442 | krb5_data *enc_ticket; | |
2443 | krb5_data authenticator, *authp = NULL; | |
2a1ef754 | 2444 | EVP_CIPHER_CTX ciph_ctx; |
21fb688d | 2445 | const EVP_CIPHER *enc = NULL; |
2a1ef754 RL |
2446 | unsigned char iv[EVP_MAX_IV_LENGTH]; |
2447 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
2448 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
2449 | + EVP_MAX_IV_LENGTH]; | |
2450 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 2451 | |
de941e28 DSH |
2452 | EVP_CIPHER_CTX_init(&ciph_ctx); |
2453 | ||
f9b3bff6 | 2454 | #ifdef KSSL_DEBUG |
8932b82f | 2455 | fprintf(stderr,"ssl3_send_client_key_exchange(%lx & %lx)\n", |
7e69565f | 2456 | alg_k, SSL_kKRB5); |
f9b3bff6 RL |
2457 | #endif /* KSSL_DEBUG */ |
2458 | ||
2a1ef754 RL |
2459 | authp = NULL; |
2460 | #ifdef KRB5SENDAUTH | |
2461 | if (KRB5SENDAUTH) authp = &authenticator; | |
2462 | #endif /* KRB5SENDAUTH */ | |
2463 | ||
57376542 | 2464 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, |
2a1ef754 RL |
2465 | &kssl_err); |
2466 | enc = kssl_map_enc(kssl_ctx->enctype); | |
57376542 BM |
2467 | if (enc == NULL) |
2468 | goto err; | |
f9b3bff6 | 2469 | #ifdef KSSL_DEBUG |
57376542 | 2470 | { |
8932b82f | 2471 | fprintf(stderr,"kssl_cget_tkt rtn %d\n", krb5rc); |
57376542 | 2472 | if (krb5rc && kssl_err.text) |
8932b82f | 2473 | fprintf(stderr,"kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
57376542 | 2474 | } |
f9b3bff6 RL |
2475 | #endif /* KSSL_DEBUG */ |
2476 | ||
57376542 BM |
2477 | if (krb5rc) |
2478 | { | |
2479 | ssl3_send_alert(s,SSL3_AL_FATAL, | |
2a1ef754 | 2480 | SSL_AD_HANDSHAKE_FAILURE); |
57376542 | 2481 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2a1ef754 | 2482 | kssl_err.reason); |
57376542 BM |
2483 | goto err; |
2484 | } | |
f9b3bff6 | 2485 | |
2a1ef754 RL |
2486 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
2487 | ** in place of RFC 2712 KerberosWrapper, as in: | |
2488 | ** | |
57376542 BM |
2489 | ** Send ticket (copy to *p, set n = length) |
2490 | ** n = krb5_ap_req.length; | |
2491 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
2492 | ** if (krb5_ap_req.data) | |
2493 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
2494 | ** | |
2a1ef754 RL |
2495 | ** Now using real RFC 2712 KerberosWrapper |
2496 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
2497 | ** Note: 2712 "opaque" types are here replaced | |
2498 | ** with a 2-byte length followed by the value. | |
2499 | ** Example: | |
2500 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
2501 | ** Where "xx xx" = length bytes. Shown here with | |
2502 | ** optional authenticator omitted. | |
2503 | */ | |
2504 | ||
2505 | /* KerberosWrapper.Ticket */ | |
2506 | s2n(enc_ticket->length,p); | |
2507 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
2508 | p+= enc_ticket->length; | |
2509 | n = enc_ticket->length + 2; | |
2510 | ||
2511 | /* KerberosWrapper.Authenticator */ | |
2512 | if (authp && authp->length) | |
2513 | { | |
2514 | s2n(authp->length,p); | |
2515 | memcpy(p, authp->data, authp->length); | |
2516 | p+= authp->length; | |
2517 | n+= authp->length + 2; | |
2518 | ||
2519 | free(authp->data); | |
2520 | authp->data = NULL; | |
2521 | authp->length = 0; | |
2522 | } | |
2523 | else | |
2524 | { | |
2525 | s2n(0,p);/* null authenticator length */ | |
2526 | n+=2; | |
2527 | } | |
2528 | ||
cbb92dfa RL |
2529 | tmp_buf[0]=s->client_version>>8; |
2530 | tmp_buf[1]=s->client_version&0xff; | |
2531 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) | |
2532 | goto err; | |
2a1ef754 RL |
2533 | |
2534 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 2535 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
2536 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
2537 | ** kssl_ctx->length); | |
581f1c84 | 2538 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
2539 | */ |
2540 | ||
54a656ef | 2541 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
2542 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
2543 | kssl_ctx->key,iv); | |
2a1ef754 | 2544 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 2545 | sizeof tmp_buf); |
581f1c84 | 2546 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 2547 | outl += padl; |
21fb688d | 2548 | if (outl > (int)sizeof epms) |
5574e0ed BM |
2549 | { |
2550 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
2551 | goto err; | |
2552 | } | |
2a1ef754 RL |
2553 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
2554 | ||
2555 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
2556 | s2n(outl,p); | |
2557 | memcpy(p, epms, outl); | |
2558 | p+=outl; | |
2559 | n+=outl + 2; | |
2560 | ||
57376542 | 2561 | s->session->master_key_length= |
52b8dad8 | 2562 | s->method->ssl3_enc->generate_master_secret(s, |
2a1ef754 | 2563 | s->session->master_key, |
54a656ef | 2564 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 2565 | |
4579924b RL |
2566 | OPENSSL_cleanse(tmp_buf, sizeof tmp_buf); |
2567 | OPENSSL_cleanse(epms, outl); | |
57376542 | 2568 | } |
d02b48c6 | 2569 | #endif |
bc36ee62 | 2570 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2571 | else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
2572 | { |
2573 | DH *dh_srvr,*dh_clnt; | |
2574 | ||
e194fe8f BM |
2575 | if (s->session->sess_cert == NULL) |
2576 | { | |
2577 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
2578 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
2579 | goto err; | |
2580 | } | |
2581 | ||
b56bce4f BM |
2582 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
2583 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
2584 | else |
2585 | { | |
2586 | /* we get them from the cert */ | |
58964a49 | 2587 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2588 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
2589 | goto err; | |
2590 | } | |
2591 | ||
2592 | /* generate a new random key */ | |
2593 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
2594 | { | |
2595 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
2596 | goto err; | |
2597 | } | |
2598 | if (!DH_generate_key(dh_clnt)) | |
2599 | { | |
2600 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
8e2f3c1c | 2601 | DH_free(dh_clnt); |
d02b48c6 RE |
2602 | goto err; |
2603 | } | |
2604 | ||
2605 | /* use the 'p' output buffer for the DH key, but | |
2606 | * make sure to clear it out afterwards */ | |
58964a49 | 2607 | |
d02b48c6 | 2608 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 2609 | |
d02b48c6 RE |
2610 | if (n <= 0) |
2611 | { | |
2612 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
8e2f3c1c | 2613 | DH_free(dh_clnt); |
d02b48c6 RE |
2614 | goto err; |
2615 | } | |
2616 | ||
2617 | /* generate master key from the result */ | |
2618 | s->session->master_key_length= | |
58964a49 | 2619 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
2620 | s->session->master_key,p,n); |
2621 | /* clean up */ | |
2622 | memset(p,0,n); | |
2623 | ||
2624 | /* send off the data */ | |
2625 | n=BN_num_bytes(dh_clnt->pub_key); | |
2626 | s2n(n,p); | |
2627 | BN_bn2bin(dh_clnt->pub_key,p); | |
2628 | n+=2; | |
2629 | ||
2630 | DH_free(dh_clnt); | |
2631 | ||
2632 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
2633 | } | |
d02b48c6 | 2634 | #endif |
ea262260 BM |
2635 | |
2636 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 2637 | else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) |
ea262260 | 2638 | { |
9dd84053 NL |
2639 | const EC_GROUP *srvr_group = NULL; |
2640 | EC_KEY *tkey; | |
ea262260 | 2641 | int ecdh_clnt_cert = 0; |
968766ca | 2642 | int field_size = 0; |
ea262260 | 2643 | |
8011cd56 DSH |
2644 | if (s->session->sess_cert == NULL) |
2645 | { | |
2646 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
2647 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
2648 | goto err; | |
2649 | } | |
2650 | ||
ea262260 BM |
2651 | /* Did we send out the client's |
2652 | * ECDH share for use in premaster | |
2653 | * computation as part of client certificate? | |
2654 | * If so, set ecdh_clnt_cert to 1. | |
2655 | */ | |
52b8dad8 | 2656 | if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL)) |
ea262260 BM |
2657 | { |
2658 | /* XXX: For now, we do not support client | |
2659 | * authentication using ECDH certificates. | |
2660 | * To add such support, one needs to add | |
2661 | * code that checks for appropriate | |
2662 | * conditions and sets ecdh_clnt_cert to 1. | |
2663 | * For example, the cert have an ECC | |
2664 | * key on the same curve as the server's | |
2665 | * and the key should be authorized for | |
2666 | * key agreement. | |
2667 | * | |
2668 | * One also needs to add code in ssl3_connect | |
2669 | * to skip sending the certificate verify | |
2670 | * message. | |
2671 | * | |
2672 | * if ((s->cert->key->privatekey != NULL) && | |
2673 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 2674 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
2675 | * ecdh_clnt_cert = 1; |
2676 | */ | |
2677 | } | |
2678 | ||
2679 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
2680 | { | |
9dd84053 | 2681 | tkey = s->session->sess_cert->peer_ecdh_tmp; |
ea262260 BM |
2682 | } |
2683 | else | |
2684 | { | |
2685 | /* Get the Server Public Key from Cert */ | |
2686 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
2687 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
2688 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 2689 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
9dd84053 | 2690 | (srvr_pub_pkey->pkey.ec == NULL)) |
ea262260 BM |
2691 | { |
2692 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2693 | ERR_R_INTERNAL_ERROR); | |
2694 | goto err; | |
2695 | } | |
2696 | ||
9dd84053 | 2697 | tkey = srvr_pub_pkey->pkey.ec; |
ea262260 BM |
2698 | } |
2699 | ||
9dd84053 NL |
2700 | srvr_group = EC_KEY_get0_group(tkey); |
2701 | srvr_ecpoint = EC_KEY_get0_public_key(tkey); | |
2702 | ||
ea262260 BM |
2703 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) |
2704 | { | |
2705 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2706 | ERR_R_INTERNAL_ERROR); | |
2707 | goto err; | |
2708 | } | |
2709 | ||
2710 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
2711 | { | |
2712 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2713 | goto err; | |
2714 | } | |
2715 | ||
9dd84053 NL |
2716 | if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) |
2717 | { | |
2718 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2719 | goto err; | |
2720 | } | |
ea262260 BM |
2721 | if (ecdh_clnt_cert) |
2722 | { | |
57376542 | 2723 | /* Reuse key info from our certificate |
ea262260 BM |
2724 | * We only need our private key to perform |
2725 | * the ECDH computation. | |
2726 | */ | |
9dd84053 NL |
2727 | const BIGNUM *priv_key; |
2728 | tkey = s->cert->key->privatekey->pkey.ec; | |
2729 | priv_key = EC_KEY_get0_private_key(tkey); | |
2730 | if (priv_key == NULL) | |
2731 | { | |
2732 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2733 | goto err; | |
2734 | } | |
2735 | if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) | |
2736 | { | |
2737 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2738 | goto err; | |
2739 | } | |
ea262260 BM |
2740 | } |
2741 | else | |
2742 | { | |
2743 | /* Generate a new ECDH key pair */ | |
2744 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
2745 | { | |
2746 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
2747 | goto err; | |
2748 | } | |
2749 | } | |
2750 | ||
57376542 BM |
2751 | /* use the 'p' output buffer for the ECDH key, but |
2752 | * make sure to clear it out afterwards | |
ea262260 BM |
2753 | */ |
2754 | ||
9dd84053 | 2755 | field_size = EC_GROUP_get_degree(srvr_group); |
968766ca BM |
2756 | if (field_size <= 0) |
2757 | { | |
2758 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2759 | ERR_R_ECDH_LIB); | |
2760 | goto err; | |
2761 | } | |
d56349a2 | 2762 | n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL); |
ea262260 | 2763 | if (n <= 0) |
57376542 BM |
2764 | { |
2765 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
ea262260 | 2766 | ERR_R_ECDH_LIB); |
57376542 | 2767 | goto err; |
ea262260 BM |
2768 | } |
2769 | ||
57376542 BM |
2770 | /* generate master key from the result */ |
2771 | s->session->master_key_length = s->method->ssl3_enc \ | |
ea262260 BM |
2772 | -> generate_master_secret(s, |
2773 | s->session->master_key, | |
2774 | p, n); | |
2775 | ||
57376542 | 2776 | memset(p, 0, n); /* clean up */ |
ea262260 BM |
2777 | |
2778 | if (ecdh_clnt_cert) | |
2779 | { | |
2780 | /* Send empty client key exch message */ | |
2781 | n = 0; | |
2782 | } | |
2783 | else | |
2784 | { | |
2785 | /* First check the size of encoding and | |
2786 | * allocate memory accordingly. | |
2787 | */ | |
2788 | encoded_pt_len = | |
9dd84053 NL |
2789 | EC_POINT_point2oct(srvr_group, |
2790 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2791 | POINT_CONVERSION_UNCOMPRESSED, |
2792 | NULL, 0, NULL); | |
2793 | ||
2794 | encodedPoint = (unsigned char *) | |
2795 | OPENSSL_malloc(encoded_pt_len * | |
2796 | sizeof(unsigned char)); | |
2797 | bn_ctx = BN_CTX_new(); | |
2798 | if ((encodedPoint == NULL) || | |
2799 | (bn_ctx == NULL)) | |
2800 | { | |
2801 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2802 | goto err; | |
2803 | } | |
2804 | ||
2805 | /* Encode the public key */ | |
9dd84053 NL |
2806 | n = EC_POINT_point2oct(srvr_group, |
2807 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2808 | POINT_CONVERSION_UNCOMPRESSED, |
2809 | encodedPoint, encoded_pt_len, bn_ctx); | |
2810 | ||
2811 | *p = n; /* length of encoded point */ | |
57376542 | 2812 | /* Encoded point will be copied here */ |
ea262260 BM |
2813 | p += 1; |
2814 | /* copy the point */ | |
2815 | memcpy((unsigned char *)p, encodedPoint, n); | |
2816 | /* increment n to account for length field */ | |
2817 | n += 1; | |
2818 | } | |
2819 | ||
2820 | /* Free allocated memory */ | |
2821 | BN_CTX_free(bn_ctx); | |
2822 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2823 | if (clnt_ecdh != NULL) | |
ea262260 | 2824 | EC_KEY_free(clnt_ecdh); |
ea262260 BM |
2825 | EVP_PKEY_free(srvr_pub_pkey); |
2826 | } | |
2827 | #endif /* !OPENSSL_NO_ECDH */ | |
0e1dba93 DSH |
2828 | else if (alg_k & SSL_kGOST) |
2829 | { | |
2830 | /* GOST key exchange message creation */ | |
2831 | EVP_PKEY_CTX *pkey_ctx; | |
2832 | X509 *peer_cert; | |
2833 | size_t msglen; | |
2834 | unsigned int md_len; | |
2835 | int keytype; | |
bfd502f0 | 2836 | unsigned char premaster_secret[32],shared_ukm[32], tmp[256]; |
0e1dba93 DSH |
2837 | EVP_MD_CTX *ukm_hash; |
2838 | EVP_PKEY *pub_key; | |
2839 | ||
2840 | /* Get server sertificate PKEY and create ctx from it */ | |
2841 | peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509; | |
2842 | if (!peer_cert) | |
2843 | peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509; | |
2844 | if (!peer_cert) { | |
2845 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER); | |
2846 | goto err; | |
2847 | } | |
2848 | ||
2849 | pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL); | |
2850 | /* If we have send a certificate, and certificate key | |
2851 | ||
2852 | * parameters match those of server certificate, use | |
2853 | * certificate key for key exchange | |
2854 | */ | |
2855 | ||
2856 | /* Otherwise, generate ephemeral key pair */ | |
2857 | ||
2858 | EVP_PKEY_encrypt_init(pkey_ctx); | |
2859 | /* Generate session key */ | |
2860 | RAND_bytes(premaster_secret,32); | |
2861 | /* If we have client certificate, use its secret as peer key */ | |
bfd502f0 DSH |
2862 | if (s->s3->tmp.cert_req && s->cert->key->privatekey) { |
2863 | if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) { | |
0e1dba93 DSH |
2864 | /* If there was an error - just ignore it. Ephemeral key |
2865 | * would be used | |
2866 | */ | |
2867 | ERR_clear_error(); | |
bfd502f0 | 2868 | } |
0e1dba93 DSH |
2869 | } |
2870 | /* Compute shared IV and store it in algorithm-specific | |
2871 | * context data */ | |
2872 | ukm_hash = EVP_MD_CTX_create(); | |
2873 | EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94)); | |
2874 | EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE); | |
2875 | EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE); | |
2876 | EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len); | |
2877 | EVP_MD_CTX_destroy(ukm_hash); | |
2878 | if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV, | |
2879 | 8,shared_ukm)<0) { | |
2880 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2881 | SSL_R_LIBRARY_BUG); | |
2882 | goto err; | |
2883 | } | |
2884 | /* Make GOST keytransport blob message */ | |
2885 | /*Encapsulate it into sequence */ | |
2886 | *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED; | |
bfd502f0 DSH |
2887 | msglen=255; |
2888 | if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) { | |
0e1dba93 DSH |
2889 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2890 | SSL_R_LIBRARY_BUG); | |
2891 | goto err; | |
bfd502f0 DSH |
2892 | } |
2893 | if (msglen >= 0x80) | |
2894 | { | |
2895 | *(p++)=0x81; | |
2896 | *(p++)= msglen & 0xff; | |
2897 | n=msglen+3; | |
2898 | } | |
2899 | else | |
2900 | { | |
2901 | *(p++)= msglen & 0xff; | |
2902 | n=msglen+2; | |
2903 | } | |
2904 | memcpy(p, tmp, msglen); | |
2905 | /* Check if pubkey from client certificate was used */ | |
2906 | if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) | |
2907 | { | |
2908 | /* Set flag "skip certificate verify" */ | |
2909 | s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY; | |
2910 | } | |
0e1dba93 DSH |
2911 | EVP_PKEY_CTX_free(pkey_ctx); |
2912 | s->session->master_key_length= | |
2913 | s->method->ssl3_enc->generate_master_secret(s, | |
2914 | s->session->master_key,premaster_secret,32); | |
2915 | EVP_PKEY_free(pub_key); | |
2916 | ||
2917 | } | |
a149b246 BL |
2918 | #ifndef OPENSSL_NO_SRP |
2919 | else if (alg_k & SSL_kSRP) | |
2920 | { | |
2921 | if (s->srp_ctx.A != NULL) | |
2922 | { | |
2923 | /* send off the data */ | |
2924 | n=BN_num_bytes(s->srp_ctx.A); | |
2925 | s2n(n,p); | |
2926 | BN_bn2bin(s->srp_ctx.A,p); | |
2927 | n+=2; | |
2928 | } | |
2929 | else | |
2930 | { | |
2931 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); | |
2932 | goto err; | |
2933 | } | |
2934 | if (s->session->srp_username != NULL) | |
2935 | OPENSSL_free(s->session->srp_username); | |
2936 | s->session->srp_username = BUF_strdup(s->srp_ctx.login); | |
2937 | if (s->session->srp_username == NULL) | |
2938 | { | |
2939 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2940 | ERR_R_MALLOC_FAILURE); | |
2941 | goto err; | |
2942 | } | |
2943 | ||
2944 | if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0) | |
2945 | { | |
3393e0c0 | 2946 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
a149b246 BL |
2947 | goto err; |
2948 | } | |
2949 | } | |
2950 | #endif | |
ddac1974 | 2951 | #ifndef OPENSSL_NO_PSK |
52b8dad8 | 2952 | else if (alg_k & SSL_kPSK) |
ddac1974 | 2953 | { |
13ce52be AL |
2954 | /* The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes |
2955 | * to return a \0-terminated identity. The last byte | |
2956 | * is for us for simulating strnlen. */ | |
2957 | char identity[PSK_MAX_IDENTITY_LEN + 2]; | |
2958 | size_t identity_len; | |
ddac1974 NL |
2959 | unsigned char *t = NULL; |
2960 | unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4]; | |
2961 | unsigned int pre_ms_len = 0, psk_len = 0; | |
2962 | int psk_err = 1; | |
2963 | ||
2964 | n = 0; | |
2965 | if (s->psk_client_callback == NULL) | |
2966 | { | |
2967 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2968 | SSL_R_PSK_NO_CLIENT_CB); | |
2969 | goto err; | |
2970 | } | |
2971 | ||
13ce52be | 2972 | memset(identity, 0, sizeof(identity)); |
ddac1974 | 2973 | psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint, |
13ce52be | 2974 | identity, sizeof(identity) - 1, |
ddac1974 NL |
2975 | psk_or_pre_ms, sizeof(psk_or_pre_ms)); |
2976 | if (psk_len > PSK_MAX_PSK_LEN) | |
2977 | { | |
2978 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2979 | ERR_R_INTERNAL_ERROR); | |
2980 | goto psk_err; | |
2981 | } | |
2982 | else if (psk_len == 0) | |
2983 | { | |
2984 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2985 | SSL_R_PSK_IDENTITY_NOT_FOUND); | |
2986 | goto psk_err; | |
2987 | } | |
13ce52be AL |
2988 | identity[PSK_MAX_IDENTITY_LEN + 1] = '\0'; |
2989 | identity_len = strlen(identity); | |
2990 | if (identity_len > PSK_MAX_IDENTITY_LEN) | |
2991 | { | |
2992 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2993 | ERR_R_INTERNAL_ERROR); | |
2994 | goto psk_err; | |
2995 | } | |
ddac1974 NL |
2996 | /* create PSK pre_master_secret */ |
2997 | pre_ms_len = 2+psk_len+2+psk_len; | |
2998 | t = psk_or_pre_ms; | |
2999 | memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len); | |
3000 | s2n(psk_len, t); | |
3001 | memset(t, 0, psk_len); | |
3002 | t+=psk_len; | |
3003 | s2n(psk_len, t); | |
3004 | ||
3005 | if (s->session->psk_identity_hint != NULL) | |
3006 | OPENSSL_free(s->session->psk_identity_hint); | |
3007 | s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint); | |
3008 | if (s->ctx->psk_identity_hint != NULL && | |
3009 | s->session->psk_identity_hint == NULL) | |
3010 | { | |
3011 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
3012 | ERR_R_MALLOC_FAILURE); | |
3013 | goto psk_err; | |
3014 | } | |
3015 | ||
3016 | if (s->session->psk_identity != NULL) | |
3017 | OPENSSL_free(s->session->psk_identity); | |
3018 | s->session->psk_identity = BUF_strdup(identity); | |
3019 | if (s->session->psk_identity == NULL) | |
3020 | { | |
3021 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
3022 | ERR_R_MALLOC_FAILURE); | |
3023 | goto psk_err; | |
3024 | } | |
3025 | ||
3026 | s->session->master_key_length = | |
3027 | s->method->ssl3_enc->generate_master_secret(s, | |
3028 | s->session->master_key, | |
13ce52be AL |
3029 | psk_or_pre_ms, pre_ms_len); |
3030 | s2n(identity_len, p); | |
3031 | memcpy(p, identity, identity_len); | |
3032 | n = 2 + identity_len; | |
ddac1974 NL |
3033 | psk_err = 0; |
3034 | psk_err: | |
13ce52be | 3035 | OPENSSL_cleanse(identity, sizeof(identity)); |
52b8dad8 | 3036 | OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms)); |
ddac1974 NL |
3037 | if (psk_err != 0) |
3038 | { | |
3039 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); | |
3040 | goto err; | |
3041 | } | |
3042 | } | |
3043 | #endif | |
f9b3bff6 | 3044 | else |
d02b48c6 | 3045 | { |
ea262260 BM |
3046 | ssl3_send_alert(s, SSL3_AL_FATAL, |
3047 | SSL_AD_HANDSHAKE_FAILURE); | |
3048 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
3049 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
3050 | goto err; |
3051 | } | |
3052 | ||
3053 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
3054 | l2n3(n,d); | |
3055 | ||
3056 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
3057 | /* number of bytes to write */ | |
3058 | s->init_num=n+4; | |
3059 | s->init_off=0; | |
3060 | } | |
3061 | ||
3062 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
3063 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
3064 | err: | |
ea262260 BM |
3065 | #ifndef OPENSSL_NO_ECDH |
3066 | BN_CTX_free(bn_ctx); | |
3067 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
3068 | if (clnt_ecdh != NULL) | |
ea262260 | 3069 | EC_KEY_free(clnt_ecdh); |
57376542 | 3070 | EVP_PKEY_free(srvr_pub_pkey); |
ea262260 | 3071 | #endif |
d02b48c6 RE |
3072 | return(-1); |
3073 | } | |
3074 | ||
36d16f8e | 3075 | int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
3076 | { |
3077 | unsigned char *p,*d; | |
3078 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
3079 | EVP_PKEY *pkey; | |
0e1dba93 | 3080 | EVP_PKEY_CTX *pctx=NULL; |
4fe4c00e | 3081 | EVP_MD_CTX mctx; |
ca7fea96 | 3082 | unsigned u=0; |
d02b48c6 | 3083 | unsigned long n; |
58964a49 | 3084 | int j; |
d02b48c6 | 3085 | |
4fe4c00e DSH |
3086 | EVP_MD_CTX_init(&mctx); |
3087 | ||
d02b48c6 RE |
3088 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) |
3089 | { | |
3090 | d=(unsigned char *)s->init_buf->data; | |
3091 | p= &(d[4]); | |
3092 | pkey=s->cert->key->privatekey; | |
0e1dba93 DSH |
3093 | /* Create context from key and test if sha1 is allowed as digest */ |
3094 | pctx = EVP_PKEY_CTX_new(pkey,NULL); | |
3095 | EVP_PKEY_sign_init(pctx); | |
3096 | if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0) | |
3097 | { | |
277f8a34 | 3098 | if (TLS1_get_version(s) < TLS1_2_VERSION) |
4fe4c00e | 3099 | s->method->ssl3_enc->cert_verify_mac(s, |
0e1dba93 DSH |
3100 | NID_sha1, |
3101 | &(data[MD5_DIGEST_LENGTH])); | |
3102 | } | |
3103 | else | |
3104 | { | |
3105 | ERR_clear_error(); | |
3106 | } | |
4fe4c00e DSH |
3107 | /* For TLS v1.2 send signature algorithm and signature |
3108 | * using agreed digest and cached handshake records. | |
3109 | */ | |
277f8a34 | 3110 | if (TLS1_get_version(s) >= TLS1_2_VERSION) |
4fe4c00e DSH |
3111 | { |
3112 | long hdatalen = 0; | |
3113 | void *hdata; | |
3114 | const EVP_MD *md = s->cert->key->digest; | |
3115 | hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, | |
3116 | &hdata); | |
3117 | if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md)) | |
3118 | { | |
3119 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
3120 | ERR_R_INTERNAL_ERROR); | |
3121 | goto err; | |
3122 | } | |
3123 | p += 2; | |
3124 | #ifdef SSL_DEBUG | |
3125 | fprintf(stderr, "Using TLS 1.2 with client alg %s\n", | |
3126 | EVP_MD_name(md)); | |
3127 | #endif | |
3128 | if (!EVP_SignInit_ex(&mctx, md, NULL) | |
3129 | || !EVP_SignUpdate(&mctx, hdata, hdatalen) | |
3130 | || !EVP_SignFinal(&mctx, p + 2, &u, pkey)) | |
3131 | { | |
3132 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
3133 | ERR_R_EVP_LIB); | |
3134 | goto err; | |
3135 | } | |
3136 | s2n(u,p); | |
3137 | n = u + 4; | |
3138 | if (!ssl3_digest_cached_records(s)) | |
3139 | goto err; | |
3140 | } | |
3141 | else | |
bc36ee62 | 3142 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
3143 | if (pkey->type == EVP_PKEY_RSA) |
3144 | { | |
58964a49 | 3145 | s->method->ssl3_enc->cert_verify_mac(s, |
81025661 DSH |
3146 | NID_md5, |
3147 | &(data[0])); | |
1c80019a DSH |
3148 | if (RSA_sign(NID_md5_sha1, data, |
3149 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 3150 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
3151 | { |
3152 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
3153 | goto err; | |
3154 | } | |
ca7fea96 BL |
3155 | s2n(u,p); |
3156 | n=u+2; | |
d02b48c6 RE |
3157 | } |
3158 | else | |
3159 | #endif | |
bc36ee62 | 3160 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
3161 | if (pkey->type == EVP_PKEY_DSA) |
3162 | { | |
3163 | if (!DSA_sign(pkey->save_type, | |
3164 | &(data[MD5_DIGEST_LENGTH]), | |
3165 | SHA_DIGEST_LENGTH,&(p[2]), | |
3166 | (unsigned int *)&j,pkey->pkey.dsa)) | |
3167 | { | |
3168 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
3169 | goto err; | |
3170 | } | |
3171 | s2n(j,p); | |
3172 | n=j+2; | |
3173 | } | |
3174 | else | |
ea262260 BM |
3175 | #endif |
3176 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 3177 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
3178 | { |
3179 | if (!ECDSA_sign(pkey->save_type, | |
3180 | &(data[MD5_DIGEST_LENGTH]), | |
3181 | SHA_DIGEST_LENGTH,&(p[2]), | |
9dd84053 | 3182 | (unsigned int *)&j,pkey->pkey.ec)) |
ea262260 BM |
3183 | { |
3184 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
3185 | ERR_R_ECDSA_LIB); | |
3186 | goto err; | |
3187 | } | |
3188 | s2n(j,p); | |
3189 | n=j+2; | |
3190 | } | |
3191 | else | |
d02b48c6 | 3192 | #endif |
0e1dba93 DSH |
3193 | if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001) |
3194 | { | |
3195 | unsigned char signbuf[64]; | |
3196 | int i; | |
9400d9ac | 3197 | size_t sigsize=64; |
0e1dba93 DSH |
3198 | s->method->ssl3_enc->cert_verify_mac(s, |
3199 | NID_id_GostR3411_94, | |
3200 | data); | |
80afb40a | 3201 | if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) { |
0e1dba93 DSH |
3202 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, |
3203 | ERR_R_INTERNAL_ERROR); | |
3204 | goto err; | |
3205 | } | |
3206 | for (i=63,j=0; i>=0; j++, i--) { | |
3207 | p[2+j]=signbuf[i]; | |
3208 | } | |
3209 | s2n(j,p); | |
3210 | n=j+2; | |
3211 | } | |
3212 | else | |
3213 | { | |
5277d7cb | 3214 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 | 3215 | goto err; |
0e1dba93 | 3216 | } |
d02b48c6 RE |
3217 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; |
3218 | l2n3(n,d); | |
3219 | ||
ba9f80c5 | 3220 | s->state=SSL3_ST_CW_CERT_VRFY_B; |
d02b48c6 RE |
3221 | s->init_num=(int)n+4; |
3222 | s->init_off=0; | |
3223 | } | |
4fe4c00e | 3224 | EVP_MD_CTX_cleanup(&mctx); |
0e1dba93 | 3225 | EVP_PKEY_CTX_free(pctx); |
d02b48c6 RE |
3226 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); |
3227 | err: | |
4fe4c00e | 3228 | EVP_MD_CTX_cleanup(&mctx); |
0e1dba93 | 3229 | EVP_PKEY_CTX_free(pctx); |
d02b48c6 RE |
3230 | return(-1); |
3231 | } | |
3232 | ||
36d16f8e | 3233 | int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
3234 | { |
3235 | X509 *x509=NULL; | |
3236 | EVP_PKEY *pkey=NULL; | |
3237 | int i; | |
3238 | unsigned long l; | |
3239 | ||
3240 | if (s->state == SSL3_ST_CW_CERT_A) | |
3241 | { | |
3242 | if ((s->cert == NULL) || | |
3243 | (s->cert->key->x509 == NULL) || | |
3244 | (s->cert->key->privatekey == NULL)) | |
3245 | s->state=SSL3_ST_CW_CERT_B; | |
3246 | else | |
3247 | s->state=SSL3_ST_CW_CERT_C; | |
3248 | } | |
3249 | ||
3250 | /* We need to get a client cert */ | |
3251 | if (s->state == SSL3_ST_CW_CERT_B) | |
3252 | { | |
3253 | /* If we get an error, we need to | |
3254 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
3255 | * We then get retied later */ | |
3256 | i=0; | |
368888bc | 3257 | i = ssl_do_client_cert_cb(s, &x509, &pkey); |
d02b48c6 RE |
3258 | if (i < 0) |
3259 | { | |
3260 | s->rwstate=SSL_X509_LOOKUP; | |
3261 | return(-1); | |
3262 | } | |
3263 | s->rwstate=SSL_NOTHING; | |
3264 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
3265 | { | |
3266 | s->state=SSL3_ST_CW_CERT_B; | |
3267 | if ( !SSL_use_certificate(s,x509) || | |
3268 | !SSL_use_PrivateKey(s,pkey)) | |
3269 | i=0; | |
3270 | } | |
3271 | else if (i == 1) | |
3272 | { | |
3273 | i=0; | |
3274 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
3275 | } | |
3276 | ||
3277 | if (x509 != NULL) X509_free(x509); | |
3278 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
3279 | if (i == 0) | |
3280 | { | |
58964a49 RE |
3281 | if (s->version == SSL3_VERSION) |
3282 | { | |
3283 | s->s3->tmp.cert_req=0; | |
3284 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
3285 | return(1); | |
3286 | } | |
3287 | else | |
3288 | { | |
3289 | s->s3->tmp.cert_req=2; | |
3290 | } | |
d02b48c6 RE |
3291 | } |
3292 | ||
3293 | /* Ok, we have a cert */ | |
3294 | s->state=SSL3_ST_CW_CERT_C; | |
3295 | } | |
3296 | ||
3297 | if (s->state == SSL3_ST_CW_CERT_C) | |
3298 | { | |
3299 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
3300 | l=ssl3_output_cert_chain(s, |
3301 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
ce5ddefc MC |
3302 | if (!l) |
3303 | { | |
3304 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR); | |
3305 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR); | |
3306 | return 0; | |
3307 | } | |
d02b48c6 RE |
3308 | s->init_num=(int)l; |
3309 | s->init_off=0; | |
3310 | } | |
3311 | /* SSL3_ST_CW_CERT_D */ | |
3312 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
3313 | } | |
3314 | ||
3315 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
3316 | ||
36d16f8e | 3317 | int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
3318 | { |
3319 | int i,idx; | |
52b8dad8 | 3320 | long alg_k,alg_a; |
d02b48c6 | 3321 | EVP_PKEY *pkey=NULL; |
b56bce4f | 3322 | SESS_CERT *sc; |
bc36ee62 | 3323 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 3324 | RSA *rsa; |
79df9d62 | 3325 | #endif |
bc36ee62 | 3326 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 3327 | DH *dh; |
79df9d62 | 3328 | #endif |
d02b48c6 | 3329 | |
52b8dad8 BM |
3330 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
3331 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
d02b48c6 RE |
3332 | |
3333 | /* we don't have a certificate */ | |
52b8dad8 | 3334 | if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK)) |
d02b48c6 RE |
3335 | return(1); |
3336 | ||
fbe2c6b3 DSH |
3337 | sc=s->session->sess_cert; |
3338 | if (sc == NULL) | |
3339 | { | |
3340 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); | |
3341 | goto err; | |
3342 | } | |
3343 | ||
bc36ee62 | 3344 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 3345 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 3346 | #endif |
bc36ee62 | 3347 | #ifndef OPENSSL_NO_DH |
b56bce4f | 3348 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 3349 | #endif |
d02b48c6 RE |
3350 | |
3351 | /* This is the passed certificate */ | |
3352 | ||
b56bce4f | 3353 | idx=sc->peer_cert_type; |
ea262260 BM |
3354 | #ifndef OPENSSL_NO_ECDH |
3355 | if (idx == SSL_PKEY_ECC) | |
3356 | { | |
ed3ecd80 | 3357 | if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, |
9472baae | 3358 | s) == 0) |
ea262260 BM |
3359 | { /* check failed */ |
3360 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
52b8dad8 | 3361 | goto f_err; |
ea262260 BM |
3362 | } |
3363 | else | |
3364 | { | |
3365 | return 1; | |
3366 | } | |
3367 | } | |
3368 | #endif | |
b56bce4f BM |
3369 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
3370 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 3371 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
3372 | |
3373 | ||
3374 | /* Check that we have a certificate if we require one */ | |
52b8dad8 | 3375 | if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
3376 | { |
3377 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
3378 | goto f_err; | |
3379 | } | |
bc36ee62 | 3380 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 3381 | else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
3382 | { |
3383 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
3384 | goto f_err; | |
3385 | } | |
3386 | #endif | |
bc36ee62 | 3387 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 3388 | if ((alg_k & SSL_kRSA) && |
d02b48c6 RE |
3389 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) |
3390 | { | |
3391 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
3392 | goto f_err; | |
3393 | } | |
79df9d62 | 3394 | #endif |
bc36ee62 | 3395 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 3396 | if ((alg_k & SSL_kEDH) && |
d02b48c6 RE |
3397 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
3398 | { | |
3399 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
3400 | goto f_err; | |
3401 | } | |
52b8dad8 | 3402 | else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) |
d02b48c6 RE |
3403 | { |
3404 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
3405 | goto f_err; | |
3406 | } | |
bc36ee62 | 3407 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 3408 | else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) |
d02b48c6 RE |
3409 | { |
3410 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
3411 | goto f_err; | |
3412 | } | |
3413 | #endif | |
3414 | #endif | |
3415 | ||
018e57c7 | 3416 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 3417 | { |
bc36ee62 | 3418 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 3419 | if (alg_k & SSL_kRSA) |
d02b48c6 | 3420 | { |
06ab81f9 | 3421 | if (rsa == NULL |
70ef9c5a | 3422 | || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
3423 | { |
3424 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
3425 | goto f_err; | |
3426 | } | |
3427 | } | |
3428 | else | |
3429 | #endif | |
bc36ee62 | 3430 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 3431 | if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
3432 | { |
3433 | if (dh == NULL | |
70ef9c5a | 3434 | || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
3435 | { |
3436 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
3437 | goto f_err; | |
3438 | } | |
3439 | } | |
3440 | else | |
3441 | #endif | |
3442 | { | |
3443 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
3444 | goto f_err; | |
3445 | } | |
3446 | } | |
3447 | return(1); | |
3448 | f_err: | |
58964a49 | 3449 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
3450 | err: |
3451 | return(0); | |
3452 | } | |
6434abbf | 3453 | |
68b33cc5 BL |
3454 | #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) |
3455 | int ssl3_send_next_proto(SSL *s) | |
3456 | { | |
3457 | unsigned int len, padding_len; | |
3458 | unsigned char *d; | |
3459 | ||
3460 | if (s->state == SSL3_ST_CW_NEXT_PROTO_A) | |
3461 | { | |
3462 | len = s->next_proto_negotiated_len; | |
3463 | padding_len = 32 - ((len + 2) % 32); | |
3464 | d = (unsigned char *)s->init_buf->data; | |
3465 | d[4] = len; | |
3466 | memcpy(d + 5, s->next_proto_negotiated, len); | |
3467 | d[5 + len] = padding_len; | |
3468 | memset(d + 6 + len, 0, padding_len); | |
3469 | *(d++)=SSL3_MT_NEXT_PROTO; | |
3470 | l2n3(2 + len + padding_len, d); | |
3471 | s->state = SSL3_ST_CW_NEXT_PROTO_B; | |
3472 | s->init_num = 4 + 2 + len + padding_len; | |
3473 | s->init_off = 0; | |
3474 | } | |
3475 | ||
3476 | return ssl3_do_write(s, SSL3_RT_HANDSHAKE); | |
b8712b2b | 3477 | } |
68b33cc5 BL |
3478 | #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */ |
3479 | ||
368888bc DSH |
3480 | int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey) |
3481 | { | |
3482 | int i = 0; | |
3483 | #ifndef OPENSSL_NO_ENGINE | |
3484 | if (s->ctx->client_cert_engine) | |
3485 | { | |
3486 | i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s, | |
3487 | SSL_get_client_CA_list(s), | |
3fc59c84 | 3488 | px509, ppkey, NULL, NULL, NULL); |
368888bc DSH |
3489 | if (i != 0) |
3490 | return i; | |
3491 | } | |
3492 | #endif | |
3493 | if (s->ctx->client_cert_cb) | |
3494 | i = s->ctx->client_cert_cb(s,px509,ppkey); | |
3495 | return i; | |
3496 | } |