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d02b48c6 | 1 | /* ssl/s3_clnt.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
8c74b5e5 | 58 | /* ==================================================================== |
52b8dad8 | 59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
8c74b5e5 BM |
60 | * |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
ea262260 BM |
111 | /* ==================================================================== |
112 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
113 | * | |
114 | * Portions of the attached software ("Contribution") are developed by | |
115 | * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. | |
116 | * | |
117 | * The Contribution is licensed pursuant to the OpenSSL open source | |
118 | * license provided above. | |
119 | * | |
ea262260 BM |
120 | * ECC cipher suite support in OpenSSL originally written by |
121 | * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories. | |
122 | * | |
123 | */ | |
ddac1974 NL |
124 | /* ==================================================================== |
125 | * Copyright 2005 Nokia. All rights reserved. | |
126 | * | |
127 | * The portions of the attached software ("Contribution") is developed by | |
128 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
129 | * license. | |
130 | * | |
131 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
132 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
133 | * support (see RFC 4279) to OpenSSL. | |
134 | * | |
135 | * No patent licenses or other rights except those expressly stated in | |
136 | * the OpenSSL open source license shall be deemed granted or received | |
137 | * expressly, by implication, estoppel, or otherwise. | |
138 | * | |
139 | * No assurances are provided by Nokia that the Contribution does not | |
140 | * infringe the patent or other intellectual property rights of any third | |
141 | * party or that the license provides you with all the necessary rights | |
142 | * to make use of the Contribution. | |
143 | * | |
144 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
145 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
146 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
147 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
148 | * OTHERWISE. | |
149 | */ | |
d02b48c6 RE |
150 | |
151 | #include <stdio.h> | |
7b63c0fa LJ |
152 | #include "ssl_locl.h" |
153 | #include "kssl_lcl.h" | |
ec577822 BM |
154 | #include <openssl/buffer.h> |
155 | #include <openssl/rand.h> | |
156 | #include <openssl/objects.h> | |
157 | #include <openssl/evp.h> | |
dbad1690 | 158 | #include <openssl/md5.h> |
3eeaab4b | 159 | #ifndef OPENSSL_NO_DH |
60a938c6 | 160 | #include <openssl/dh.h> |
3eeaab4b | 161 | #endif |
d095b68d | 162 | #include <openssl/bn.h> |
f9b3bff6 | 163 | |
4ebb342f | 164 | static const SSL_METHOD *ssl3_get_client_method(int ver); |
ccd86b68 | 165 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
ea262260 | 166 | |
4ebb342f | 167 | static const SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 168 | { |
58964a49 | 169 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
170 | return(SSLv3_client_method()); |
171 | else | |
172 | return(NULL); | |
173 | } | |
174 | ||
f3b656b2 DSH |
175 | IMPLEMENT_ssl3_meth_func(SSLv3_client_method, |
176 | ssl_undefined_function, | |
177 | ssl3_connect, | |
178 | ssl3_get_client_method) | |
d02b48c6 | 179 | |
6b691a5c | 180 | int ssl3_connect(SSL *s) |
d02b48c6 | 181 | { |
8d6ad9e3 | 182 | BUF_MEM *buf=NULL; |
52b8dad8 | 183 | unsigned long Time=(unsigned long)time(NULL); |
d02b48c6 | 184 | long num1; |
45d87a1f | 185 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 186 | int ret= -1; |
d02b48c6 RE |
187 | int new_state,state,skip=0;; |
188 | ||
eb952088 | 189 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 190 | ERR_clear_error(); |
58964a49 | 191 | clear_sys_error(); |
d02b48c6 RE |
192 | |
193 | if (s->info_callback != NULL) | |
194 | cb=s->info_callback; | |
195 | else if (s->ctx->info_callback != NULL) | |
196 | cb=s->ctx->info_callback; | |
197 | ||
d02b48c6 | 198 | s->in_handshake++; |
979689aa | 199 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 RE |
200 | |
201 | for (;;) | |
202 | { | |
203 | state=s->state; | |
204 | ||
205 | switch(s->state) | |
206 | { | |
207 | case SSL_ST_RENEGOTIATE: | |
208 | s->new_session=1; | |
209 | s->state=SSL_ST_CONNECT; | |
413c4f45 | 210 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
211 | /* break */ |
212 | case SSL_ST_BEFORE: | |
213 | case SSL_ST_CONNECT: | |
214 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
215 | case SSL_ST_OK|SSL_ST_CONNECT: | |
216 | ||
413c4f45 | 217 | s->server=0; |
d02b48c6 RE |
218 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
219 | ||
58964a49 | 220 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 221 | { |
5277d7cb | 222 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
223 | ret = -1; |
224 | goto end; | |
225 | } | |
226 | ||
58964a49 | 227 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
228 | s->type=SSL_ST_CONNECT; |
229 | ||
230 | if (s->init_buf == NULL) | |
231 | { | |
232 | if ((buf=BUF_MEM_new()) == NULL) | |
233 | { | |
234 | ret= -1; | |
235 | goto end; | |
236 | } | |
237 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
238 | { | |
239 | ret= -1; | |
240 | goto end; | |
241 | } | |
242 | s->init_buf=buf; | |
8d6ad9e3 | 243 | buf=NULL; |
d02b48c6 RE |
244 | } |
245 | ||
246 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
247 | ||
248 | /* setup buffing BIO */ | |
58964a49 | 249 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
250 | |
251 | /* don't push the buffering BIO quite yet */ | |
252 | ||
253 | ssl3_init_finished_mac(s); | |
254 | ||
255 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 256 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
257 | s->init_num=0; |
258 | break; | |
259 | ||
260 | case SSL3_ST_CW_CLNT_HELLO_A: | |
261 | case SSL3_ST_CW_CLNT_HELLO_B: | |
262 | ||
263 | s->shutdown=0; | |
264 | ret=ssl3_client_hello(s); | |
265 | if (ret <= 0) goto end; | |
266 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
267 | s->init_num=0; | |
268 | ||
269 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
270 | if (s->bbio != s->wbio) |
271 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
272 | |
273 | break; | |
274 | ||
275 | case SSL3_ST_CR_SRVR_HELLO_A: | |
276 | case SSL3_ST_CR_SRVR_HELLO_B: | |
277 | ret=ssl3_get_server_hello(s); | |
278 | if (ret <= 0) goto end; | |
241520e6 | 279 | |
d02b48c6 RE |
280 | if (s->hit) |
281 | s->state=SSL3_ST_CR_FINISHED_A; | |
282 | else | |
283 | s->state=SSL3_ST_CR_CERT_A; | |
284 | s->init_num=0; | |
285 | break; | |
286 | ||
287 | case SSL3_ST_CR_CERT_A: | |
288 | case SSL3_ST_CR_CERT_B: | |
ea262260 | 289 | /* Check if it is anon DH/ECDH */ |
ddac1974 | 290 | /* or PSK */ |
52b8dad8 BM |
291 | if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) && |
292 | !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) | |
d02b48c6 RE |
293 | { |
294 | ret=ssl3_get_server_certificate(s); | |
295 | if (ret <= 0) goto end; | |
296 | } | |
297 | else | |
298 | skip=1; | |
299 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
300 | s->init_num=0; | |
301 | break; | |
302 | ||
303 | case SSL3_ST_CR_KEY_EXCH_A: | |
304 | case SSL3_ST_CR_KEY_EXCH_B: | |
305 | ret=ssl3_get_key_exchange(s); | |
306 | if (ret <= 0) goto end; | |
307 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
308 | s->init_num=0; | |
309 | ||
310 | /* at this point we check that we have the | |
311 | * required stuff from the server */ | |
312 | if (!ssl3_check_cert_and_algorithm(s)) | |
313 | { | |
314 | ret= -1; | |
315 | goto end; | |
316 | } | |
317 | break; | |
318 | ||
319 | case SSL3_ST_CR_CERT_REQ_A: | |
320 | case SSL3_ST_CR_CERT_REQ_B: | |
321 | ret=ssl3_get_certificate_request(s); | |
322 | if (ret <= 0) goto end; | |
323 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
324 | s->init_num=0; | |
325 | break; | |
326 | ||
327 | case SSL3_ST_CR_SRVR_DONE_A: | |
328 | case SSL3_ST_CR_SRVR_DONE_B: | |
329 | ret=ssl3_get_server_done(s); | |
330 | if (ret <= 0) goto end; | |
331 | if (s->s3->tmp.cert_req) | |
332 | s->state=SSL3_ST_CW_CERT_A; | |
333 | else | |
334 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
335 | s->init_num=0; | |
336 | ||
337 | break; | |
338 | ||
339 | case SSL3_ST_CW_CERT_A: | |
340 | case SSL3_ST_CW_CERT_B: | |
341 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 342 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
343 | ret=ssl3_send_client_certificate(s); |
344 | if (ret <= 0) goto end; | |
345 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
346 | s->init_num=0; | |
347 | break; | |
348 | ||
349 | case SSL3_ST_CW_KEY_EXCH_A: | |
350 | case SSL3_ST_CW_KEY_EXCH_B: | |
351 | ret=ssl3_send_client_key_exchange(s); | |
352 | if (ret <= 0) goto end; | |
d02b48c6 RE |
353 | /* EAY EAY EAY need to check for DH fix cert |
354 | * sent back */ | |
58964a49 RE |
355 | /* For TLS, cert_req is set to 2, so a cert chain |
356 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
357 | /* XXX: For now, we do not support client |
358 | * authentication in ECDH cipher suites with | |
359 | * ECDH (rather than ECDSA) certificates. | |
360 | * We need to skip the certificate verify | |
361 | * message when client's ECDH public key is sent | |
362 | * inside the client certificate. | |
363 | */ | |
58964a49 | 364 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
365 | { |
366 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
367 | } | |
368 | else | |
369 | { | |
370 | s->state=SSL3_ST_CW_CHANGE_A; | |
371 | s->s3->change_cipher_spec=0; | |
372 | } | |
373 | ||
374 | s->init_num=0; | |
375 | break; | |
376 | ||
377 | case SSL3_ST_CW_CERT_VRFY_A: | |
378 | case SSL3_ST_CW_CERT_VRFY_B: | |
379 | ret=ssl3_send_client_verify(s); | |
380 | if (ret <= 0) goto end; | |
381 | s->state=SSL3_ST_CW_CHANGE_A; | |
382 | s->init_num=0; | |
383 | s->s3->change_cipher_spec=0; | |
384 | break; | |
385 | ||
386 | case SSL3_ST_CW_CHANGE_A: | |
387 | case SSL3_ST_CW_CHANGE_B: | |
388 | ret=ssl3_send_change_cipher_spec(s, | |
389 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
390 | if (ret <= 0) goto end; | |
391 | s->state=SSL3_ST_CW_FINISHED_A; | |
392 | s->init_num=0; | |
393 | ||
394 | s->session->cipher=s->s3->tmp.new_cipher; | |
09b6c2ef DSH |
395 | #ifdef OPENSSL_NO_COMP |
396 | s->session->compress_meth=0; | |
397 | #else | |
413c4f45 MC |
398 | if (s->s3->tmp.new_compression == NULL) |
399 | s->session->compress_meth=0; | |
400 | else | |
401 | s->session->compress_meth= | |
402 | s->s3->tmp.new_compression->id; | |
09b6c2ef | 403 | #endif |
58964a49 | 404 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
405 | { |
406 | ret= -1; | |
407 | goto end; | |
408 | } | |
409 | ||
58964a49 | 410 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
411 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
412 | { | |
413 | ret= -1; | |
414 | goto end; | |
415 | } | |
416 | ||
417 | break; | |
418 | ||
419 | case SSL3_ST_CW_FINISHED_A: | |
420 | case SSL3_ST_CW_FINISHED_B: | |
421 | ret=ssl3_send_finished(s, | |
422 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
423 | s->method->ssl3_enc->client_finished_label, |
424 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
425 | if (ret <= 0) goto end; |
426 | s->state=SSL3_ST_CW_FLUSH; | |
427 | ||
428 | /* clear flags */ | |
429 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
430 | if (s->hit) | |
431 | { | |
432 | s->s3->tmp.next_state=SSL_ST_OK; | |
433 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
434 | { | |
435 | s->state=SSL_ST_OK; | |
436 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
437 | s->s3->delay_buf_pop_ret=0; | |
438 | } | |
439 | } | |
440 | else | |
441 | { | |
442 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; | |
443 | } | |
444 | s->init_num=0; | |
445 | break; | |
446 | ||
447 | case SSL3_ST_CR_FINISHED_A: | |
448 | case SSL3_ST_CR_FINISHED_B: | |
449 | ||
450 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, | |
58964a49 | 451 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
452 | if (ret <= 0) goto end; |
453 | ||
454 | if (s->hit) | |
455 | s->state=SSL3_ST_CW_CHANGE_A; | |
456 | else | |
457 | s->state=SSL_ST_OK; | |
458 | s->init_num=0; | |
459 | break; | |
460 | ||
461 | case SSL3_ST_CW_FLUSH: | |
462 | /* number of bytes to be flushed */ | |
463 | num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); | |
464 | if (num1 > 0) | |
465 | { | |
466 | s->rwstate=SSL_WRITING; | |
467 | num1=BIO_flush(s->wbio); | |
468 | if (num1 <= 0) { ret= -1; goto end; } | |
469 | s->rwstate=SSL_NOTHING; | |
470 | } | |
471 | ||
472 | s->state=s->s3->tmp.next_state; | |
473 | break; | |
474 | ||
475 | case SSL_ST_OK: | |
476 | /* clean a few things up */ | |
477 | ssl3_cleanup_key_block(s); | |
478 | ||
413c4f45 | 479 | if (s->init_buf != NULL) |
d02b48c6 | 480 | { |
413c4f45 MC |
481 | BUF_MEM_free(s->init_buf); |
482 | s->init_buf=NULL; | |
d02b48c6 | 483 | } |
413c4f45 MC |
484 | |
485 | /* If we are not 'joining' the last two packets, | |
486 | * remove the buffering now */ | |
487 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
488 | ssl_free_wbio_buffer(s); | |
489 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
490 | |
491 | s->init_num=0; | |
492 | s->new_session=0; | |
493 | ||
494 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 495 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
496 | |
497 | ret=1; | |
498 | /* s->server=0; */ | |
499 | s->handshake_func=ssl3_connect; | |
413c4f45 | 500 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
501 | |
502 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
503 | ||
504 | goto end; | |
dfeab068 | 505 | /* break; */ |
d02b48c6 RE |
506 | |
507 | default: | |
508 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
509 | ret= -1; | |
510 | goto end; | |
511 | /* break; */ | |
512 | } | |
513 | ||
514 | /* did we do anything */ | |
515 | if (!s->s3->tmp.reuse_message && !skip) | |
516 | { | |
58964a49 RE |
517 | if (s->debug) |
518 | { | |
519 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
520 | goto end; | |
521 | } | |
d02b48c6 RE |
522 | |
523 | if ((cb != NULL) && (s->state != state)) | |
524 | { | |
525 | new_state=s->state; | |
526 | s->state=state; | |
527 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
528 | s->state=new_state; | |
529 | } | |
530 | } | |
531 | skip=0; | |
532 | } | |
533 | end: | |
4d635a70 | 534 | s->in_handshake--; |
8d6ad9e3 RL |
535 | if (buf != NULL) |
536 | BUF_MEM_free(buf); | |
d02b48c6 RE |
537 | if (cb != NULL) |
538 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
d02b48c6 RE |
539 | return(ret); |
540 | } | |
541 | ||
542 | ||
36d16f8e | 543 | int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
544 | { |
545 | unsigned char *buf; | |
546 | unsigned char *p,*d; | |
09b6c2ef | 547 | int i; |
d02b48c6 | 548 | unsigned long Time,l; |
09b6c2ef DSH |
549 | #ifndef OPENSSL_NO_COMP |
550 | int j; | |
413c4f45 | 551 | SSL_COMP *comp; |
09b6c2ef | 552 | #endif |
d02b48c6 RE |
553 | |
554 | buf=(unsigned char *)s->init_buf->data; | |
555 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
556 | { | |
557 | if ((s->session == NULL) || | |
dfeab068 RE |
558 | (s->session->ssl_version != s->version) || |
559 | (s->session->not_resumable)) | |
d02b48c6 RE |
560 | { |
561 | if (!ssl_get_new_session(s,0)) | |
562 | goto err; | |
563 | } | |
564 | /* else use the pre-loaded session */ | |
565 | ||
566 | p=s->s3->client_random; | |
7bbcb2f6 | 567 | Time=(unsigned long)time(NULL); /* Time */ |
d02b48c6 | 568 | l2n(Time,p); |
7c7667b8 NL |
569 | if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0) |
570 | goto err; | |
d02b48c6 RE |
571 | |
572 | /* Do the message type and length last */ | |
573 | d=p= &(buf[4]); | |
574 | ||
58964a49 RE |
575 | *(p++)=s->version>>8; |
576 | *(p++)=s->version&0xff; | |
413c4f45 | 577 | s->client_version=s->version; |
d02b48c6 RE |
578 | |
579 | /* Random stuff */ | |
580 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
581 | p+=SSL3_RANDOM_SIZE; | |
582 | ||
583 | /* Session ID */ | |
584 | if (s->new_session) | |
585 | i=0; | |
586 | else | |
587 | i=s->session->session_id_length; | |
588 | *(p++)=i; | |
589 | if (i != 0) | |
590 | { | |
27545970 | 591 | if (i > (int)sizeof(s->session->session_id)) |
5574e0ed BM |
592 | { |
593 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
594 | goto err; | |
595 | } | |
d02b48c6 RE |
596 | memcpy(p,s->session->session_id,i); |
597 | p+=i; | |
598 | } | |
599 | ||
600 | /* Ciphers supported */ | |
c6c2e313 | 601 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0); |
d02b48c6 RE |
602 | if (i == 0) |
603 | { | |
604 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
605 | goto err; | |
606 | } | |
607 | s2n(i,p); | |
608 | p+=i; | |
609 | ||
dfeab068 | 610 | /* COMPRESSION */ |
09b6c2ef DSH |
611 | #ifdef OPENSSL_NO_COMP |
612 | *(p++)=1; | |
613 | #else | |
566dda07 DSH |
614 | |
615 | if ((s->options & SSL_OP_NO_COMPRESSION) | |
616 | || !s->ctx->comp_methods) | |
413c4f45 MC |
617 | j=0; |
618 | else | |
f73e07cf | 619 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
620 | *(p++)=1+j; |
621 | for (i=0; i<j; i++) | |
622 | { | |
f73e07cf | 623 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
624 | *(p++)=comp->id; |
625 | } | |
09b6c2ef | 626 | #endif |
413c4f45 | 627 | *(p++)=0; /* Add the NULL method */ |
ed3883d2 | 628 | #ifndef OPENSSL_NO_TLSEXT |
36ca4ba6 BM |
629 | if (ssl_prepare_clienthello_tlsext(s) <= 0) |
630 | { | |
631 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT); | |
632 | goto err; | |
633 | } | |
f1fd4544 BM |
634 | if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL) |
635 | { | |
ed3883d2 BM |
636 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR); |
637 | goto err; | |
f1fd4544 | 638 | } |
ed3883d2 | 639 | #endif |
d02b48c6 RE |
640 | |
641 | l=(p-d); | |
642 | d=buf; | |
643 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
644 | l2n3(l,d); | |
645 | ||
646 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
647 | /* number of bytes to write */ | |
648 | s->init_num=p-buf; | |
649 | s->init_off=0; | |
650 | } | |
651 | ||
652 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
653 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
654 | err: | |
655 | return(-1); | |
656 | } | |
657 | ||
36d16f8e | 658 | int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 659 | { |
f73e07cf | 660 | STACK_OF(SSL_CIPHER) *sk; |
d02b48c6 RE |
661 | SSL_CIPHER *c; |
662 | unsigned char *p,*d; | |
663 | int i,al,ok; | |
664 | unsigned int j; | |
665 | long n; | |
09b6c2ef | 666 | #ifndef OPENSSL_NO_COMP |
413c4f45 | 667 | SSL_COMP *comp; |
09b6c2ef | 668 | #endif |
d02b48c6 | 669 | |
36d16f8e | 670 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
671 | SSL3_ST_CR_SRVR_HELLO_A, |
672 | SSL3_ST_CR_SRVR_HELLO_B, | |
36d16f8e | 673 | -1, |
d02b48c6 RE |
674 | 300, /* ?? */ |
675 | &ok); | |
676 | ||
677 | if (!ok) return((int)n); | |
36d16f8e BL |
678 | |
679 | if ( SSL_version(s) == DTLS1_VERSION) | |
680 | { | |
681 | if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) | |
682 | { | |
683 | if ( s->d1->send_cookie == 0) | |
684 | { | |
685 | s->s3->tmp.reuse_message = 1; | |
686 | return 1; | |
687 | } | |
688 | else /* already sent a cookie */ | |
689 | { | |
690 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 691 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
692 | goto f_err; |
693 | } | |
694 | } | |
695 | } | |
696 | ||
697 | if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) | |
698 | { | |
699 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 700 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
701 | goto f_err; |
702 | } | |
703 | ||
48948d53 | 704 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 705 | |
58964a49 | 706 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
707 | { |
708 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
709 | s->version=(s->version&0xff00)|p[1]; |
710 | al=SSL_AD_PROTOCOL_VERSION; | |
711 | goto f_err; | |
d02b48c6 RE |
712 | } |
713 | p+=2; | |
714 | ||
715 | /* load the server hello data */ | |
716 | /* load the server random */ | |
717 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
718 | p+=SSL3_RANDOM_SIZE; | |
719 | ||
720 | /* get the session-id */ | |
721 | j= *(p++); | |
722 | ||
a4f53a1c | 723 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 724 | { |
a4f53a1c BM |
725 | al=SSL_AD_ILLEGAL_PARAMETER; |
726 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
727 | goto f_err; | |
d02b48c6 | 728 | } |
54a656ef | 729 | |
b4cadc6e BL |
730 | if (j != 0 && j == s->session->session_id_length |
731 | && memcmp(p,s->session->session_id,j) == 0) | |
732 | { | |
733 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
734 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
735 | { | |
a4f53a1c | 736 | /* actually a client application bug */ |
b4cadc6e BL |
737 | al=SSL_AD_ILLEGAL_PARAMETER; |
738 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
739 | goto f_err; | |
740 | } | |
741 | s->hit=1; | |
742 | } | |
58964a49 | 743 | else /* a miss or crap from the other end */ |
d02b48c6 | 744 | { |
58964a49 RE |
745 | /* If we were trying for session-id reuse, make a new |
746 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 747 | s->hit=0; |
58964a49 RE |
748 | if (s->session->session_id_length > 0) |
749 | { | |
750 | if (!ssl_get_new_session(s,0)) | |
751 | { | |
752 | al=SSL_AD_INTERNAL_ERROR; | |
753 | goto f_err; | |
754 | } | |
755 | } | |
756 | s->session->session_id_length=j; | |
757 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
758 | } |
759 | p+=j; | |
760 | c=ssl_get_cipher_by_char(s,p); | |
761 | if (c == NULL) | |
762 | { | |
763 | /* unknown cipher */ | |
58964a49 | 764 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
765 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
766 | goto f_err; | |
767 | } | |
768 | p+=ssl_put_cipher_by_char(s,NULL,NULL); | |
769 | ||
770 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 771 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
772 | if (i < 0) |
773 | { | |
774 | /* we did not say we would use this cipher */ | |
58964a49 | 775 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
776 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
777 | goto f_err; | |
778 | } | |
779 | ||
6a8afe22 LJ |
780 | /* Depending on the session caching (internal/external), the cipher |
781 | and/or cipher_id values may not be set. Make sure that | |
782 | cipher_id is set and use it for comparison. */ | |
783 | if (s->session->cipher) | |
784 | s->session->cipher_id = s->session->cipher->id; | |
c5662053 | 785 | if (s->hit && (s->session->cipher_id != c->id)) |
d02b48c6 | 786 | { |
58964a49 | 787 | if (!(s->options & |
d02b48c6 RE |
788 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
789 | { | |
58964a49 | 790 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
791 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
792 | goto f_err; | |
793 | } | |
794 | } | |
795 | s->s3->tmp.new_cipher=c; | |
796 | ||
797 | /* lets get the compression algorithm */ | |
dfeab068 | 798 | /* COMPRESSION */ |
09b6c2ef DSH |
799 | #ifdef OPENSSL_NO_COMP |
800 | if (*(p++) != 0) | |
801 | { | |
802 | al=SSL_AD_ILLEGAL_PARAMETER; | |
803 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
804 | goto f_err; | |
805 | } | |
806 | #else | |
d02b48c6 | 807 | j= *(p++); |
566dda07 | 808 | if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION)) |
413c4f45 MC |
809 | comp=NULL; |
810 | else | |
811 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
812 | ||
813 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 814 | { |
58964a49 | 815 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
816 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
817 | goto f_err; | |
818 | } | |
413c4f45 MC |
819 | else |
820 | { | |
821 | s->s3->tmp.new_compression=comp; | |
822 | } | |
09b6c2ef | 823 | #endif |
ed3883d2 BM |
824 | #ifndef OPENSSL_NO_TLSEXT |
825 | /* TLS extensions*/ | |
826 | if (s->version > SSL3_VERSION) | |
f1fd4544 BM |
827 | { |
828 | if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al)) | |
829 | { | |
830 | /* 'al' set by ssl_parse_serverhello_tlsext */ | |
36ca4ba6 | 831 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT); |
ed3883d2 | 832 | goto f_err; |
f1fd4544 | 833 | } |
36ca4ba6 | 834 | if (ssl_check_serverhello_tlsext(s) <= 0) |
58ece833 | 835 | { |
36ca4ba6 | 836 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SERVERHELLO_TLSEXT); |
58ece833 BM |
837 | goto err; |
838 | } | |
ed3883d2 | 839 | } |
ed3883d2 | 840 | #endif |
d02b48c6 RE |
841 | |
842 | if (p != (d+n)) | |
843 | { | |
844 | /* wrong packet length */ | |
58964a49 | 845 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
846 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
847 | goto err; | |
848 | } | |
849 | ||
850 | return(1); | |
851 | f_err: | |
852 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
853 | err: | |
854 | return(-1); | |
855 | } | |
856 | ||
36d16f8e | 857 | int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
858 | { |
859 | int al,i,ok,ret= -1; | |
860 | unsigned long n,nc,llen,l; | |
861 | X509 *x=NULL; | |
875a644a RL |
862 | const unsigned char *q,*p; |
863 | unsigned char *d; | |
f73e07cf | 864 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 865 | SESS_CERT *sc; |
d02b48c6 | 866 | EVP_PKEY *pkey=NULL; |
57376542 | 867 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 | 868 | |
36d16f8e | 869 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
870 | SSL3_ST_CR_CERT_A, |
871 | SSL3_ST_CR_CERT_B, | |
872 | -1, | |
c0f5dd07 | 873 | s->max_cert_list, |
d02b48c6 RE |
874 | &ok); |
875 | ||
876 | if (!ok) return((int)n); | |
877 | ||
878 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) | |
879 | { | |
880 | s->s3->tmp.reuse_message=1; | |
881 | return(1); | |
882 | } | |
883 | ||
884 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
885 | { | |
58964a49 | 886 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
887 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
888 | goto f_err; | |
889 | } | |
875a644a | 890 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 891 | |
f73e07cf | 892 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
893 | { |
894 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
895 | goto err; | |
896 | } | |
897 | ||
898 | n2l3(p,llen); | |
899 | if (llen+3 != n) | |
900 | { | |
58964a49 | 901 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
902 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
903 | goto f_err; | |
904 | } | |
905 | for (nc=0; nc<llen; ) | |
906 | { | |
907 | n2l3(p,l); | |
908 | if ((l+nc+3) > llen) | |
909 | { | |
58964a49 | 910 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
911 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
912 | goto f_err; | |
913 | } | |
914 | ||
915 | q=p; | |
916 | x=d2i_X509(NULL,&q,l); | |
917 | if (x == NULL) | |
918 | { | |
58964a49 | 919 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
920 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
921 | goto f_err; | |
922 | } | |
923 | if (q != (p+l)) | |
924 | { | |
58964a49 | 925 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
926 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
927 | goto f_err; | |
928 | } | |
f73e07cf | 929 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
930 | { |
931 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
932 | goto err; | |
933 | } | |
934 | x=NULL; | |
935 | nc+=l+3; | |
936 | p=q; | |
937 | } | |
938 | ||
939 | i=ssl_verify_cert_chain(s,sk); | |
82d5d46c RL |
940 | if ((s->verify_mode != SSL_VERIFY_NONE) && (!i) |
941 | #ifndef OPENSSL_NO_KRB5 | |
52b8dad8 BM |
942 | && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
943 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
82d5d46c | 944 | #endif /* OPENSSL_NO_KRB5 */ |
52b8dad8 | 945 | ) |
d02b48c6 RE |
946 | { |
947 | al=ssl_verify_alarm_type(s->verify_result); | |
948 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
949 | goto f_err; | |
950 | } | |
1fab73ac | 951 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 952 | |
b56bce4f BM |
953 | sc=ssl_sess_cert_new(); |
954 | if (sc == NULL) goto err; | |
d02b48c6 | 955 | |
b56bce4f BM |
956 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
957 | s->session->sess_cert=sc; | |
d02b48c6 | 958 | |
b56bce4f | 959 | sc->cert_chain=sk; |
98e04f9e BM |
960 | /* Inconsistency alert: cert_chain does include the peer's |
961 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 962 | x=sk_X509_value(sk,0); |
d02b48c6 | 963 | sk=NULL; |
2a1ef754 | 964 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
965 | |
966 | pkey=X509_get_pubkey(x); | |
967 | ||
57376542 | 968 | /* VRS: allow null cert if auth == KRB5 */ |
52b8dad8 BM |
969 | need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
970 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
971 | ? 0 : 1; | |
f9b3bff6 RL |
972 | |
973 | #ifdef KSSL_DEBUG | |
974 | printf("pkey,x = %p, %p\n", pkey,x); | |
975 | printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); | |
52b8dad8 BM |
976 | printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name, |
977 | s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert); | |
f9b3bff6 RL |
978 | #endif /* KSSL_DEBUG */ |
979 | ||
2a1ef754 | 980 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
981 | { |
982 | x=NULL; | |
983 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
984 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
985 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
986 | goto f_err; |
987 | } | |
988 | ||
989 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 990 | if (need_cert && i < 0) |
d02b48c6 RE |
991 | { |
992 | x=NULL; | |
993 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
994 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
995 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
996 | goto f_err; |
997 | } | |
998 | ||
57376542 BM |
999 | if (need_cert) |
1000 | { | |
1001 | sc->peer_cert_type=i; | |
1002 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1003 | /* Why would the following ever happen? | |
1004 | * We just created sc a couple of lines ago. */ | |
1005 | if (sc->peer_pkeys[i].x509 != NULL) | |
1006 | X509_free(sc->peer_pkeys[i].x509); | |
1007 | sc->peer_pkeys[i].x509=x; | |
1008 | sc->peer_key= &(sc->peer_pkeys[i]); | |
1009 | ||
1010 | if (s->session->peer != NULL) | |
1011 | X509_free(s->session->peer); | |
1012 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1013 | s->session->peer=x; | |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | sc->peer_cert_type=i; | |
1018 | sc->peer_key= NULL; | |
1019 | ||
1020 | if (s->session->peer != NULL) | |
1021 | X509_free(s->session->peer); | |
1022 | s->session->peer=NULL; | |
1023 | } | |
0dd2254d | 1024 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
1025 | |
1026 | x=NULL; | |
1027 | ret=1; | |
1028 | ||
1029 | if (0) | |
1030 | { | |
1031 | f_err: | |
1032 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1033 | } | |
1034 | err: | |
a8236c8c DSH |
1035 | EVP_PKEY_free(pkey); |
1036 | X509_free(x); | |
f73e07cf | 1037 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
1038 | return(ret); |
1039 | } | |
1040 | ||
36d16f8e | 1041 | int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 1042 | { |
bc36ee62 | 1043 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1044 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
1045 | #endif | |
1046 | EVP_MD_CTX md_ctx; | |
1047 | unsigned char *param,*p; | |
1048 | int al,i,j,param_len,ok; | |
52b8dad8 | 1049 | long n,alg_k,alg_a; |
d02b48c6 | 1050 | EVP_PKEY *pkey=NULL; |
bc36ee62 | 1051 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1052 | RSA *rsa=NULL; |
79df9d62 | 1053 | #endif |
bc36ee62 | 1054 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 1055 | DH *dh=NULL; |
58964a49 | 1056 | #endif |
ea262260 BM |
1057 | #ifndef OPENSSL_NO_ECDH |
1058 | EC_KEY *ecdh = NULL; | |
1059 | BN_CTX *bn_ctx = NULL; | |
1060 | EC_POINT *srvr_ecpoint = NULL; | |
1061 | int curve_nid = 0; | |
1062 | int encoded_pt_len = 0; | |
1063 | #endif | |
d02b48c6 | 1064 | |
37a7cd1a BM |
1065 | /* use same message size as in ssl3_get_certificate_request() |
1066 | * as ServerKeyExchange message may be skipped */ | |
36d16f8e | 1067 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1068 | SSL3_ST_CR_KEY_EXCH_A, |
1069 | SSL3_ST_CR_KEY_EXCH_B, | |
1070 | -1, | |
c0f5dd07 | 1071 | s->max_cert_list, |
d02b48c6 | 1072 | &ok); |
d02b48c6 RE |
1073 | if (!ok) return((int)n); |
1074 | ||
1075 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
1076 | { | |
ddac1974 NL |
1077 | #ifndef OPENSSL_NO_PSK |
1078 | /* In plain PSK ciphersuite, ServerKeyExchange can be | |
1079 | omitted if no identity hint is sent. Set | |
1080 | session->sess_cert anyway to avoid problems | |
1081 | later.*/ | |
52b8dad8 | 1082 | if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK) |
ddac1974 NL |
1083 | { |
1084 | s->session->sess_cert=ssl_sess_cert_new(); | |
1085 | if (s->ctx->psk_identity_hint) | |
1086 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1087 | s->ctx->psk_identity_hint = NULL; | |
1088 | } | |
1089 | #endif | |
d02b48c6 RE |
1090 | s->s3->tmp.reuse_message=1; |
1091 | return(1); | |
1092 | } | |
1093 | ||
48948d53 | 1094 | param=p=(unsigned char *)s->init_msg; |
9d5cceac | 1095 | if (s->session->sess_cert != NULL) |
d02b48c6 | 1096 | { |
bc36ee62 | 1097 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1098 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1099 | { |
b56bce4f BM |
1100 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1101 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1102 | } |
1103 | #endif | |
bc36ee62 | 1104 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1105 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1106 | { |
b56bce4f BM |
1107 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1108 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1109 | } |
ea262260 BM |
1110 | #endif |
1111 | #ifndef OPENSSL_NO_ECDH | |
1112 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1113 | { | |
1114 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1115 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1116 | } | |
d02b48c6 RE |
1117 | #endif |
1118 | } | |
1119 | else | |
1120 | { | |
b56bce4f | 1121 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1122 | } |
1123 | ||
1124 | param_len=0; | |
52b8dad8 BM |
1125 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
1126 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
dbad1690 | 1127 | EVP_MD_CTX_init(&md_ctx); |
d02b48c6 | 1128 | |
ddac1974 | 1129 | #ifndef OPENSSL_NO_PSK |
52b8dad8 BM |
1130 | if (alg_k & SSL_kPSK) |
1131 | { | |
ddac1974 NL |
1132 | char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1]; |
1133 | ||
1134 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1135 | n2s(p,i); | |
1136 | param_len=i+2; | |
1137 | /* Store PSK identity hint for later use, hint is used | |
1138 | * in ssl3_send_client_key_exchange. Assume that the | |
1139 | * maximum length of a PSK identity hint can be as | |
1140 | * long as the maximum length of a PSK identity. */ | |
1141 | if (i > PSK_MAX_IDENTITY_LEN) | |
1142 | { | |
1143 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1144 | SSL_R_DATA_LENGTH_TOO_LONG); | |
1145 | goto f_err; | |
1146 | } | |
1147 | if (param_len > n) | |
1148 | { | |
1149 | al=SSL_AD_DECODE_ERROR; | |
1150 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1151 | SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH); | |
1152 | goto f_err; | |
1153 | } | |
1154 | /* If received PSK identity hint contains NULL | |
1155 | * characters, the hint is truncated from the first | |
1156 | * NULL. p may not be ending with NULL, so create a | |
1157 | * NULL-terminated string. */ | |
1158 | memcpy(tmp_id_hint, p, i); | |
1159 | memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i); | |
1160 | if (s->ctx->psk_identity_hint != NULL) | |
1161 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1162 | s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint); | |
1163 | if (s->ctx->psk_identity_hint == NULL) | |
1164 | { | |
1165 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); | |
1166 | goto f_err; | |
52b8dad8 | 1167 | } |
ddac1974 NL |
1168 | |
1169 | p+=i; | |
1170 | n-=param_len; | |
1171 | } | |
1172 | else | |
1173 | #endif /* !OPENSSL_NO_PSK */ | |
bc36ee62 | 1174 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1175 | if (alg_k & SSL_kRSA) |
d02b48c6 RE |
1176 | { |
1177 | if ((rsa=RSA_new()) == NULL) | |
1178 | { | |
1179 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1180 | goto err; | |
1181 | } | |
1182 | n2s(p,i); | |
1183 | param_len=i+2; | |
1184 | if (param_len > n) | |
1185 | { | |
58964a49 | 1186 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1187 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1188 | goto f_err; | |
1189 | } | |
1190 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
1191 | { | |
1192 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1193 | goto err; | |
1194 | } | |
1195 | p+=i; | |
1196 | ||
1197 | n2s(p,i); | |
1198 | param_len+=i+2; | |
1199 | if (param_len > n) | |
1200 | { | |
58964a49 | 1201 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1202 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1203 | goto f_err; | |
1204 | } | |
1205 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
1206 | { | |
1207 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1208 | goto err; | |
1209 | } | |
1210 | p+=i; | |
1211 | n-=param_len; | |
1212 | ||
d02b48c6 | 1213 | /* this should be because we are using an export cipher */ |
52b8dad8 | 1214 | if (alg_a & SSL_aRSA) |
b56bce4f | 1215 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1216 | else |
1217 | { | |
5277d7cb | 1218 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1219 | goto err; |
1220 | } | |
b56bce4f | 1221 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1222 | rsa=NULL; |
d02b48c6 | 1223 | } |
bc36ee62 | 1224 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1225 | if (0) |
1226 | ; | |
d02b48c6 | 1227 | #endif |
bc36ee62 | 1228 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 1229 | else if (alg_k & SSL_kEDH) |
d02b48c6 RE |
1230 | { |
1231 | if ((dh=DH_new()) == NULL) | |
1232 | { | |
1233 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1234 | goto err; | |
1235 | } | |
1236 | n2s(p,i); | |
1237 | param_len=i+2; | |
1238 | if (param_len > n) | |
1239 | { | |
58964a49 | 1240 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1241 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1242 | goto f_err; | |
1243 | } | |
1244 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
1245 | { | |
1246 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1247 | goto err; | |
1248 | } | |
1249 | p+=i; | |
1250 | ||
1251 | n2s(p,i); | |
1252 | param_len+=i+2; | |
1253 | if (param_len > n) | |
1254 | { | |
58964a49 | 1255 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1256 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1257 | goto f_err; | |
1258 | } | |
1259 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
1260 | { | |
1261 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1262 | goto err; | |
1263 | } | |
1264 | p+=i; | |
1265 | ||
1266 | n2s(p,i); | |
1267 | param_len+=i+2; | |
1268 | if (param_len > n) | |
1269 | { | |
58964a49 | 1270 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1271 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1272 | goto f_err; | |
1273 | } | |
1274 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
1275 | { | |
1276 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1277 | goto err; | |
1278 | } | |
1279 | p+=i; | |
1280 | n-=param_len; | |
1281 | ||
bc36ee62 | 1282 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1283 | if (alg_a & SSL_aRSA) |
b56bce4f | 1284 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1285 | #else |
1286 | if (0) | |
1287 | ; | |
d02b48c6 | 1288 | #endif |
bc36ee62 | 1289 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 1290 | else if (alg_a & SSL_aDSS) |
b56bce4f | 1291 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1292 | #endif |
1293 | /* else anonymous DH, so no certificate or pkey. */ | |
1294 | ||
b56bce4f | 1295 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1296 | dh=NULL; |
d02b48c6 | 1297 | } |
52b8dad8 | 1298 | else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd)) |
d02b48c6 | 1299 | { |
58964a49 | 1300 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1301 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1302 | goto f_err; | |
1303 | } | |
bc36ee62 | 1304 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1305 | |
1306 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 1307 | else if (alg_k & SSL_kEECDH) |
ea262260 | 1308 | { |
9dd84053 NL |
1309 | EC_GROUP *ngroup; |
1310 | const EC_GROUP *group; | |
1311 | ||
ea262260 BM |
1312 | if ((ecdh=EC_KEY_new()) == NULL) |
1313 | { | |
1314 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1315 | goto err; | |
1316 | } | |
1317 | ||
1318 | /* Extract elliptic curve parameters and the | |
1319 | * server's ephemeral ECDH public key. | |
1320 | * Keep accumulating lengths of various components in | |
1321 | * param_len and make sure it never exceeds n. | |
1322 | */ | |
1323 | ||
1324 | /* XXX: For now we only support named (not generic) curves | |
d56349a2 | 1325 | * and the ECParameters in this case is just three bytes. |
ea262260 | 1326 | */ |
d56349a2 | 1327 | param_len=3; |
ea262260 BM |
1328 | if ((param_len > n) || |
1329 | (*p != NAMED_CURVE_TYPE) || | |
33273721 | 1330 | ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)) |
ea262260 BM |
1331 | { |
1332 | al=SSL_AD_INTERNAL_ERROR; | |
1333 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1334 | goto f_err; | |
1335 | } | |
1336 | ||
9dd84053 NL |
1337 | ngroup = EC_GROUP_new_by_curve_name(curve_nid); |
1338 | if (ngroup == NULL) | |
1339 | { | |
1340 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1341 | goto err; | |
1342 | } | |
1343 | if (EC_KEY_set_group(ecdh, ngroup) == 0) | |
ea262260 BM |
1344 | { |
1345 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1346 | goto err; | |
1347 | } | |
9dd84053 NL |
1348 | EC_GROUP_free(ngroup); |
1349 | ||
1350 | group = EC_KEY_get0_group(ecdh); | |
ea262260 BM |
1351 | |
1352 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
9dd84053 | 1353 | (EC_GROUP_get_degree(group) > 163)) |
ea262260 BM |
1354 | { |
1355 | al=SSL_AD_EXPORT_RESTRICTION; | |
1356 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1357 | goto f_err; | |
1358 | } | |
1359 | ||
d56349a2 | 1360 | p+=3; |
ea262260 BM |
1361 | |
1362 | /* Next, get the encoded ECPoint */ | |
9dd84053 | 1363 | if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) || |
ea262260 BM |
1364 | ((bn_ctx = BN_CTX_new()) == NULL)) |
1365 | { | |
1366 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1367 | goto err; | |
1368 | } | |
1369 | ||
1370 | encoded_pt_len = *p; /* length of encoded point */ | |
1371 | p+=1; | |
1372 | param_len += (1 + encoded_pt_len); | |
1373 | if ((param_len > n) || | |
9dd84053 | 1374 | (EC_POINT_oct2point(group, srvr_ecpoint, |
ea262260 BM |
1375 | p, encoded_pt_len, bn_ctx) == 0)) |
1376 | { | |
1377 | al=SSL_AD_DECODE_ERROR; | |
1378 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); | |
1379 | goto f_err; | |
1380 | } | |
1381 | ||
1382 | n-=param_len; | |
1383 | p+=encoded_pt_len; | |
1384 | ||
1385 | /* The ECC/TLS specification does not mention | |
1386 | * the use of DSA to sign ECParameters in the server | |
1387 | * key exchange message. We do support RSA and ECDSA. | |
1388 | */ | |
1389 | if (0) ; | |
1390 | #ifndef OPENSSL_NO_RSA | |
52b8dad8 | 1391 | else if (alg_a & SSL_aRSA) |
ea262260 BM |
1392 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
1393 | #endif | |
1394 | #ifndef OPENSSL_NO_ECDSA | |
52b8dad8 | 1395 | else if (alg_a & SSL_aECDSA) |
ea262260 BM |
1396 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); |
1397 | #endif | |
1398 | /* else anonymous ECDH, so no certificate or pkey. */ | |
9dd84053 | 1399 | EC_KEY_set_public_key(ecdh, srvr_ecpoint); |
ea262260 BM |
1400 | s->session->sess_cert->peer_ecdh_tmp=ecdh; |
1401 | ecdh=NULL; | |
1402 | BN_CTX_free(bn_ctx); | |
9dd84053 | 1403 | EC_POINT_free(srvr_ecpoint); |
ea262260 BM |
1404 | srvr_ecpoint = NULL; |
1405 | } | |
52b8dad8 | 1406 | else if (alg_k) |
ea262260 BM |
1407 | { |
1408 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1409 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1410 | goto f_err; | |
1411 | } | |
1412 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 | 1413 | |
d02b48c6 RE |
1414 | |
1415 | /* p points to the next byte, there are 'n' bytes left */ | |
1416 | ||
d02b48c6 RE |
1417 | /* if it was signed, check the signature */ |
1418 | if (pkey != NULL) | |
1419 | { | |
1420 | n2s(p,i); | |
1421 | n-=2; | |
1422 | j=EVP_PKEY_size(pkey); | |
1423 | ||
1424 | if ((i != n) || (n > j) || (n <= 0)) | |
1425 | { | |
1426 | /* wrong packet length */ | |
58964a49 | 1427 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1428 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1429 | goto f_err; |
d02b48c6 RE |
1430 | } |
1431 | ||
bc36ee62 | 1432 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1433 | if (pkey->type == EVP_PKEY_RSA) |
1434 | { | |
1435 | int num; | |
1436 | ||
1437 | j=0; | |
1438 | q=md_buf; | |
1439 | for (num=2; num > 0; num--) | |
1440 | { | |
20d2186c DSH |
1441 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1442 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1443 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1444 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1445 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
20d2186c | 1446 | EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i); |
d02b48c6 RE |
1447 | q+=i; |
1448 | j+=i; | |
1449 | } | |
1c80019a DSH |
1450 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1451 | pkey->pkey.rsa); | |
1452 | if (i < 0) | |
d02b48c6 | 1453 | { |
58964a49 | 1454 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1455 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1456 | goto f_err; | |
1457 | } | |
1c80019a | 1458 | if (i == 0) |
d02b48c6 RE |
1459 | { |
1460 | /* bad signature */ | |
58964a49 | 1461 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1462 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1463 | goto f_err; | |
1464 | } | |
1465 | } | |
1466 | else | |
1467 | #endif | |
bc36ee62 | 1468 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
1469 | if (pkey->type == EVP_PKEY_DSA) |
1470 | { | |
1471 | /* lets do DSS */ | |
20d2186c | 1472 | EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL); |
d02b48c6 RE |
1473 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1474 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1475 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1476 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1477 | { | |
1478 | /* bad signature */ | |
58964a49 | 1479 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1480 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1481 | goto f_err; | |
1482 | } | |
1483 | } | |
1484 | else | |
ea262260 BM |
1485 | #endif |
1486 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 1487 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
1488 | { |
1489 | /* let's do ECDSA */ | |
1490 | EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL); | |
1491 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1492 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1493 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1494 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1495 | { | |
1496 | /* bad signature */ | |
1497 | al=SSL_AD_DECRYPT_ERROR; | |
1498 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1499 | goto f_err; | |
1500 | } | |
1501 | } | |
1502 | else | |
d02b48c6 RE |
1503 | #endif |
1504 | { | |
5277d7cb | 1505 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1506 | goto err; |
1507 | } | |
1508 | } | |
1509 | else | |
1510 | { | |
52b8dad8 | 1511 | if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK)) |
ddac1974 | 1512 | /* aNULL or kPSK do not need public keys */ |
d02b48c6 | 1513 | { |
5277d7cb | 1514 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1515 | goto err; |
1516 | } | |
ddac1974 | 1517 | /* still data left over */ |
d02b48c6 RE |
1518 | if (n != 0) |
1519 | { | |
58964a49 | 1520 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1521 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1522 | goto f_err; | |
1523 | } | |
1524 | } | |
a8236c8c | 1525 | EVP_PKEY_free(pkey); |
dbad1690 | 1526 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1527 | return(1); |
1528 | f_err: | |
1529 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1530 | err: | |
a8236c8c | 1531 | EVP_PKEY_free(pkey); |
bc36ee62 | 1532 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1533 | if (rsa != NULL) |
1534 | RSA_free(rsa); | |
1535 | #endif | |
bc36ee62 | 1536 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1537 | if (dh != NULL) |
1538 | DH_free(dh); | |
ea262260 BM |
1539 | #endif |
1540 | #ifndef OPENSSL_NO_ECDH | |
1541 | BN_CTX_free(bn_ctx); | |
1542 | EC_POINT_free(srvr_ecpoint); | |
1543 | if (ecdh != NULL) | |
1544 | EC_KEY_free(ecdh); | |
6b521df3 | 1545 | #endif |
dbad1690 | 1546 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1547 | return(-1); |
1548 | } | |
1549 | ||
36d16f8e | 1550 | int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1551 | { |
1552 | int ok,ret=0; | |
58964a49 RE |
1553 | unsigned long n,nc,l; |
1554 | unsigned int llen,ctype_num,i; | |
d02b48c6 | 1555 | X509_NAME *xn=NULL; |
875a644a RL |
1556 | const unsigned char *p,*q; |
1557 | unsigned char *d; | |
f73e07cf | 1558 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 | 1559 | |
36d16f8e | 1560 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1561 | SSL3_ST_CR_CERT_REQ_A, |
1562 | SSL3_ST_CR_CERT_REQ_B, | |
1563 | -1, | |
c0f5dd07 | 1564 | s->max_cert_list, |
d02b48c6 RE |
1565 | &ok); |
1566 | ||
1567 | if (!ok) return((int)n); | |
1568 | ||
1569 | s->s3->tmp.cert_req=0; | |
1570 | ||
1571 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1572 | { | |
1573 | s->s3->tmp.reuse_message=1; | |
1574 | return(1); | |
1575 | } | |
1576 | ||
1577 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1578 | { | |
58964a49 | 1579 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1580 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1581 | goto err; | |
1582 | } | |
1583 | ||
58964a49 RE |
1584 | /* TLS does not like anon-DH with client cert */ |
1585 | if (s->version > SSL3_VERSION) | |
1586 | { | |
52b8dad8 | 1587 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) |
58964a49 RE |
1588 | { |
1589 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1590 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1591 | goto err; | |
1592 | } | |
1593 | } | |
1594 | ||
875a644a | 1595 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1596 | |
f73e07cf | 1597 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1598 | { |
1599 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1600 | goto err; | |
1601 | } | |
1602 | ||
1603 | /* get the certificate types */ | |
1604 | ctype_num= *(p++); | |
1605 | if (ctype_num > SSL3_CT_NUMBER) | |
1606 | ctype_num=SSL3_CT_NUMBER; | |
1607 | for (i=0; i<ctype_num; i++) | |
1608 | s->s3->tmp.ctype[i]= p[i]; | |
1609 | p+=ctype_num; | |
1610 | ||
1611 | /* get the CA RDNs */ | |
1612 | n2s(p,llen); | |
dfeab068 RE |
1613 | #if 0 |
1614 | { | |
1615 | FILE *out; | |
1616 | out=fopen("/tmp/vsign.der","w"); | |
1617 | fwrite(p,1,llen,out); | |
1618 | fclose(out); | |
1619 | } | |
1620 | #endif | |
1621 | ||
d02b48c6 RE |
1622 | if ((llen+ctype_num+2+1) != n) |
1623 | { | |
58964a49 | 1624 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1625 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1626 | goto err; | |
1627 | } | |
1628 | ||
1629 | for (nc=0; nc<llen; ) | |
1630 | { | |
1631 | n2s(p,l); | |
1632 | if ((l+nc+2) > llen) | |
1633 | { | |
58964a49 | 1634 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 1635 | goto cont; /* netscape bugs */ |
58964a49 | 1636 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1637 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
1638 | goto err; | |
1639 | } | |
1640 | ||
1641 | q=p; | |
1642 | ||
1643 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
1644 | { | |
657e60fa | 1645 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 1646 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
1647 | goto cont; |
1648 | else | |
1649 | { | |
58964a49 | 1650 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1651 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
1652 | goto err; | |
1653 | } | |
1654 | } | |
1655 | ||
1656 | if (q != (p+l)) | |
1657 | { | |
58964a49 | 1658 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1659 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
1660 | goto err; | |
1661 | } | |
f73e07cf | 1662 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
1663 | { |
1664 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1665 | goto err; | |
1666 | } | |
1667 | ||
1668 | p+=l; | |
1669 | nc+=l+2; | |
1670 | } | |
1671 | ||
1672 | if (0) | |
1673 | { | |
1674 | cont: | |
1675 | ERR_clear_error(); | |
1676 | } | |
1677 | ||
657e60fa | 1678 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
1679 | s->s3->tmp.cert_req=1; |
1680 | s->s3->tmp.ctype_num=ctype_num; | |
1681 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 1682 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
1683 | s->s3->tmp.ca_names=ca_sk; |
1684 | ca_sk=NULL; | |
1685 | ||
1686 | ret=1; | |
1687 | err: | |
f73e07cf | 1688 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
1689 | return(ret); |
1690 | } | |
1691 | ||
ccd86b68 | 1692 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
1693 | { |
1694 | return(X509_NAME_cmp(*a,*b)); | |
1695 | } | |
1696 | ||
36d16f8e | 1697 | int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
1698 | { |
1699 | int ok,ret=0; | |
1700 | long n; | |
1701 | ||
36d16f8e | 1702 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1703 | SSL3_ST_CR_SRVR_DONE_A, |
1704 | SSL3_ST_CR_SRVR_DONE_B, | |
1705 | SSL3_MT_SERVER_DONE, | |
1706 | 30, /* should be very small, like 0 :-) */ | |
1707 | &ok); | |
1708 | ||
1709 | if (!ok) return((int)n); | |
1710 | if (n > 0) | |
1711 | { | |
1712 | /* should contain no data */ | |
58964a49 | 1713 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 1714 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 1715 | return -1; |
d02b48c6 RE |
1716 | } |
1717 | ret=1; | |
1718 | return(ret); | |
1719 | } | |
1720 | ||
176f31dd | 1721 | |
36d16f8e | 1722 | int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 1723 | { |
79df9d62 | 1724 | unsigned char *p,*d; |
d02b48c6 | 1725 | int n; |
52b8dad8 | 1726 | unsigned long alg_k; |
bc36ee62 | 1727 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 1728 | unsigned char *q; |
d02b48c6 | 1729 | EVP_PKEY *pkey=NULL; |
79df9d62 | 1730 | #endif |
bc36ee62 | 1731 | #ifndef OPENSSL_NO_KRB5 |
57376542 | 1732 | KSSL_ERR kssl_err; |
bc36ee62 | 1733 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
1734 | #ifndef OPENSSL_NO_ECDH |
1735 | EC_KEY *clnt_ecdh = NULL; | |
9dd84053 | 1736 | const EC_POINT *srvr_ecpoint = NULL; |
ea262260 BM |
1737 | EVP_PKEY *srvr_pub_pkey = NULL; |
1738 | unsigned char *encodedPoint = NULL; | |
1739 | int encoded_pt_len = 0; | |
1740 | BN_CTX * bn_ctx = NULL; | |
1741 | #endif | |
d02b48c6 RE |
1742 | |
1743 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
1744 | { | |
1745 | d=(unsigned char *)s->init_buf->data; | |
1746 | p= &(d[4]); | |
1747 | ||
52b8dad8 | 1748 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
d02b48c6 | 1749 | |
57376542 BM |
1750 | /* Fool emacs indentation */ |
1751 | if (0) {} | |
bc36ee62 | 1752 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1753 | else if (alg_k & SSL_kRSA) |
d02b48c6 RE |
1754 | { |
1755 | RSA *rsa; | |
dfeab068 | 1756 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 1757 | |
b56bce4f BM |
1758 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
1759 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
1760 | else |
1761 | { | |
b56bce4f | 1762 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1763 | if ((pkey == NULL) || |
1764 | (pkey->type != EVP_PKEY_RSA) || | |
1765 | (pkey->pkey.rsa == NULL)) | |
1766 | { | |
5277d7cb | 1767 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1768 | goto err; |
1769 | } | |
1770 | rsa=pkey->pkey.rsa; | |
50596582 | 1771 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1772 | } |
1773 | ||
413c4f45 MC |
1774 | tmp_buf[0]=s->client_version>>8; |
1775 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 1776 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 1777 | goto err; |
d02b48c6 | 1778 | |
54a656ef | 1779 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 1780 | |
58964a49 RE |
1781 | q=p; |
1782 | /* Fix buf for TLS and beyond */ | |
1783 | if (s->version > SSL3_VERSION) | |
1784 | p+=2; | |
54a656ef | 1785 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 1786 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
1787 | #ifdef PKCS1_CHECK |
1788 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
1789 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
1790 | #endif | |
d02b48c6 RE |
1791 | if (n <= 0) |
1792 | { | |
1793 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
1794 | goto err; | |
1795 | } | |
1796 | ||
58964a49 RE |
1797 | /* Fix buf for TLS and beyond */ |
1798 | if (s->version > SSL3_VERSION) | |
1799 | { | |
1800 | s2n(n,q); | |
1801 | n+=2; | |
1802 | } | |
1803 | ||
d02b48c6 | 1804 | s->session->master_key_length= |
58964a49 | 1805 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 1806 | s->session->master_key, |
54a656ef | 1807 | tmp_buf,sizeof tmp_buf); |
4579924b | 1808 | OPENSSL_cleanse(tmp_buf,sizeof tmp_buf); |
d02b48c6 | 1809 | } |
f9b3bff6 | 1810 | #endif |
bc36ee62 | 1811 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 | 1812 | else if (alg_k & SSL_kKRB5) |
57376542 BM |
1813 | { |
1814 | krb5_error_code krb5rc; | |
1815 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
1816 | /* krb5_data krb5_ap_req; */ | |
1817 | krb5_data *enc_ticket; | |
1818 | krb5_data authenticator, *authp = NULL; | |
2a1ef754 RL |
1819 | EVP_CIPHER_CTX ciph_ctx; |
1820 | EVP_CIPHER *enc = NULL; | |
1821 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
1822 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
1823 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
1824 | + EVP_MAX_IV_LENGTH]; | |
1825 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 1826 | |
de941e28 DSH |
1827 | EVP_CIPHER_CTX_init(&ciph_ctx); |
1828 | ||
f9b3bff6 | 1829 | #ifdef KSSL_DEBUG |
57376542 | 1830 | printf("ssl3_send_client_key_exchange(%lx & %lx)\n", |
7e69565f | 1831 | alg_k, SSL_kKRB5); |
f9b3bff6 RL |
1832 | #endif /* KSSL_DEBUG */ |
1833 | ||
2a1ef754 RL |
1834 | authp = NULL; |
1835 | #ifdef KRB5SENDAUTH | |
1836 | if (KRB5SENDAUTH) authp = &authenticator; | |
1837 | #endif /* KRB5SENDAUTH */ | |
1838 | ||
57376542 | 1839 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, |
2a1ef754 RL |
1840 | &kssl_err); |
1841 | enc = kssl_map_enc(kssl_ctx->enctype); | |
57376542 BM |
1842 | if (enc == NULL) |
1843 | goto err; | |
f9b3bff6 | 1844 | #ifdef KSSL_DEBUG |
57376542 BM |
1845 | { |
1846 | printf("kssl_cget_tkt rtn %d\n", krb5rc); | |
1847 | if (krb5rc && kssl_err.text) | |
2a1ef754 | 1848 | printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
57376542 | 1849 | } |
f9b3bff6 RL |
1850 | #endif /* KSSL_DEBUG */ |
1851 | ||
57376542 BM |
1852 | if (krb5rc) |
1853 | { | |
1854 | ssl3_send_alert(s,SSL3_AL_FATAL, | |
2a1ef754 | 1855 | SSL_AD_HANDSHAKE_FAILURE); |
57376542 | 1856 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2a1ef754 | 1857 | kssl_err.reason); |
57376542 BM |
1858 | goto err; |
1859 | } | |
f9b3bff6 | 1860 | |
2a1ef754 RL |
1861 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
1862 | ** in place of RFC 2712 KerberosWrapper, as in: | |
1863 | ** | |
57376542 BM |
1864 | ** Send ticket (copy to *p, set n = length) |
1865 | ** n = krb5_ap_req.length; | |
1866 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
1867 | ** if (krb5_ap_req.data) | |
1868 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
1869 | ** | |
2a1ef754 RL |
1870 | ** Now using real RFC 2712 KerberosWrapper |
1871 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
1872 | ** Note: 2712 "opaque" types are here replaced | |
1873 | ** with a 2-byte length followed by the value. | |
1874 | ** Example: | |
1875 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
1876 | ** Where "xx xx" = length bytes. Shown here with | |
1877 | ** optional authenticator omitted. | |
1878 | */ | |
1879 | ||
1880 | /* KerberosWrapper.Ticket */ | |
1881 | s2n(enc_ticket->length,p); | |
1882 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
1883 | p+= enc_ticket->length; | |
1884 | n = enc_ticket->length + 2; | |
1885 | ||
1886 | /* KerberosWrapper.Authenticator */ | |
1887 | if (authp && authp->length) | |
1888 | { | |
1889 | s2n(authp->length,p); | |
1890 | memcpy(p, authp->data, authp->length); | |
1891 | p+= authp->length; | |
1892 | n+= authp->length + 2; | |
1893 | ||
1894 | free(authp->data); | |
1895 | authp->data = NULL; | |
1896 | authp->length = 0; | |
1897 | } | |
1898 | else | |
1899 | { | |
1900 | s2n(0,p);/* null authenticator length */ | |
1901 | n+=2; | |
1902 | } | |
1903 | ||
cbb92dfa RL |
1904 | tmp_buf[0]=s->client_version>>8; |
1905 | tmp_buf[1]=s->client_version&0xff; | |
1906 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) | |
1907 | goto err; | |
2a1ef754 RL |
1908 | |
1909 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 1910 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
1911 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
1912 | ** kssl_ctx->length); | |
581f1c84 | 1913 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
1914 | */ |
1915 | ||
54a656ef | 1916 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
1917 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
1918 | kssl_ctx->key,iv); | |
2a1ef754 | 1919 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 1920 | sizeof tmp_buf); |
581f1c84 | 1921 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 1922 | outl += padl; |
5574e0ed BM |
1923 | if (outl > sizeof epms) |
1924 | { | |
1925 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
1926 | goto err; | |
1927 | } | |
2a1ef754 RL |
1928 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
1929 | ||
1930 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
1931 | s2n(outl,p); | |
1932 | memcpy(p, epms, outl); | |
1933 | p+=outl; | |
1934 | n+=outl + 2; | |
1935 | ||
57376542 | 1936 | s->session->master_key_length= |
52b8dad8 | 1937 | s->method->ssl3_enc->generate_master_secret(s, |
2a1ef754 | 1938 | s->session->master_key, |
54a656ef | 1939 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 1940 | |
4579924b RL |
1941 | OPENSSL_cleanse(tmp_buf, sizeof tmp_buf); |
1942 | OPENSSL_cleanse(epms, outl); | |
57376542 | 1943 | } |
d02b48c6 | 1944 | #endif |
bc36ee62 | 1945 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 1946 | else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
1947 | { |
1948 | DH *dh_srvr,*dh_clnt; | |
1949 | ||
b56bce4f BM |
1950 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
1951 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
1952 | else |
1953 | { | |
1954 | /* we get them from the cert */ | |
58964a49 | 1955 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1956 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
1957 | goto err; | |
1958 | } | |
1959 | ||
1960 | /* generate a new random key */ | |
1961 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
1962 | { | |
1963 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1964 | goto err; | |
1965 | } | |
1966 | if (!DH_generate_key(dh_clnt)) | |
1967 | { | |
1968 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1969 | goto err; | |
1970 | } | |
1971 | ||
1972 | /* use the 'p' output buffer for the DH key, but | |
1973 | * make sure to clear it out afterwards */ | |
58964a49 | 1974 | |
d02b48c6 | 1975 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 1976 | |
d02b48c6 RE |
1977 | if (n <= 0) |
1978 | { | |
1979 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1980 | goto err; | |
1981 | } | |
1982 | ||
1983 | /* generate master key from the result */ | |
1984 | s->session->master_key_length= | |
58964a49 | 1985 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1986 | s->session->master_key,p,n); |
1987 | /* clean up */ | |
1988 | memset(p,0,n); | |
1989 | ||
1990 | /* send off the data */ | |
1991 | n=BN_num_bytes(dh_clnt->pub_key); | |
1992 | s2n(n,p); | |
1993 | BN_bn2bin(dh_clnt->pub_key,p); | |
1994 | n+=2; | |
1995 | ||
1996 | DH_free(dh_clnt); | |
1997 | ||
1998 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
1999 | } | |
d02b48c6 | 2000 | #endif |
ea262260 BM |
2001 | |
2002 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 2003 | else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) |
ea262260 | 2004 | { |
9dd84053 NL |
2005 | const EC_GROUP *srvr_group = NULL; |
2006 | EC_KEY *tkey; | |
ea262260 | 2007 | int ecdh_clnt_cert = 0; |
968766ca | 2008 | int field_size = 0; |
ea262260 BM |
2009 | |
2010 | /* Did we send out the client's | |
2011 | * ECDH share for use in premaster | |
2012 | * computation as part of client certificate? | |
2013 | * If so, set ecdh_clnt_cert to 1. | |
2014 | */ | |
52b8dad8 | 2015 | if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL)) |
ea262260 BM |
2016 | { |
2017 | /* XXX: For now, we do not support client | |
2018 | * authentication using ECDH certificates. | |
2019 | * To add such support, one needs to add | |
2020 | * code that checks for appropriate | |
2021 | * conditions and sets ecdh_clnt_cert to 1. | |
2022 | * For example, the cert have an ECC | |
2023 | * key on the same curve as the server's | |
2024 | * and the key should be authorized for | |
2025 | * key agreement. | |
2026 | * | |
2027 | * One also needs to add code in ssl3_connect | |
2028 | * to skip sending the certificate verify | |
2029 | * message. | |
2030 | * | |
2031 | * if ((s->cert->key->privatekey != NULL) && | |
2032 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 2033 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
2034 | * ecdh_clnt_cert = 1; |
2035 | */ | |
2036 | } | |
2037 | ||
2038 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
2039 | { | |
9dd84053 | 2040 | tkey = s->session->sess_cert->peer_ecdh_tmp; |
ea262260 BM |
2041 | } |
2042 | else | |
2043 | { | |
2044 | /* Get the Server Public Key from Cert */ | |
2045 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
2046 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
2047 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 2048 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
9dd84053 | 2049 | (srvr_pub_pkey->pkey.ec == NULL)) |
ea262260 BM |
2050 | { |
2051 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2052 | ERR_R_INTERNAL_ERROR); | |
2053 | goto err; | |
2054 | } | |
2055 | ||
9dd84053 | 2056 | tkey = srvr_pub_pkey->pkey.ec; |
ea262260 BM |
2057 | } |
2058 | ||
9dd84053 NL |
2059 | srvr_group = EC_KEY_get0_group(tkey); |
2060 | srvr_ecpoint = EC_KEY_get0_public_key(tkey); | |
2061 | ||
ea262260 BM |
2062 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) |
2063 | { | |
2064 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2065 | ERR_R_INTERNAL_ERROR); | |
2066 | goto err; | |
2067 | } | |
2068 | ||
2069 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
2070 | { | |
2071 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2072 | goto err; | |
2073 | } | |
2074 | ||
9dd84053 NL |
2075 | if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) |
2076 | { | |
2077 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2078 | goto err; | |
2079 | } | |
ea262260 BM |
2080 | if (ecdh_clnt_cert) |
2081 | { | |
57376542 | 2082 | /* Reuse key info from our certificate |
ea262260 BM |
2083 | * We only need our private key to perform |
2084 | * the ECDH computation. | |
2085 | */ | |
9dd84053 NL |
2086 | const BIGNUM *priv_key; |
2087 | tkey = s->cert->key->privatekey->pkey.ec; | |
2088 | priv_key = EC_KEY_get0_private_key(tkey); | |
2089 | if (priv_key == NULL) | |
2090 | { | |
2091 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2092 | goto err; | |
2093 | } | |
2094 | if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) | |
2095 | { | |
2096 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2097 | goto err; | |
2098 | } | |
ea262260 BM |
2099 | } |
2100 | else | |
2101 | { | |
2102 | /* Generate a new ECDH key pair */ | |
2103 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
2104 | { | |
2105 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
2106 | goto err; | |
2107 | } | |
2108 | } | |
2109 | ||
57376542 BM |
2110 | /* use the 'p' output buffer for the ECDH key, but |
2111 | * make sure to clear it out afterwards | |
ea262260 BM |
2112 | */ |
2113 | ||
9dd84053 | 2114 | field_size = EC_GROUP_get_degree(srvr_group); |
968766ca BM |
2115 | if (field_size <= 0) |
2116 | { | |
2117 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2118 | ERR_R_ECDH_LIB); | |
2119 | goto err; | |
2120 | } | |
d56349a2 | 2121 | n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL); |
ea262260 | 2122 | if (n <= 0) |
57376542 BM |
2123 | { |
2124 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
ea262260 | 2125 | ERR_R_ECDH_LIB); |
57376542 | 2126 | goto err; |
ea262260 BM |
2127 | } |
2128 | ||
57376542 BM |
2129 | /* generate master key from the result */ |
2130 | s->session->master_key_length = s->method->ssl3_enc \ | |
ea262260 BM |
2131 | -> generate_master_secret(s, |
2132 | s->session->master_key, | |
2133 | p, n); | |
2134 | ||
57376542 | 2135 | memset(p, 0, n); /* clean up */ |
ea262260 BM |
2136 | |
2137 | if (ecdh_clnt_cert) | |
2138 | { | |
2139 | /* Send empty client key exch message */ | |
2140 | n = 0; | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | /* First check the size of encoding and | |
2145 | * allocate memory accordingly. | |
2146 | */ | |
2147 | encoded_pt_len = | |
9dd84053 NL |
2148 | EC_POINT_point2oct(srvr_group, |
2149 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2150 | POINT_CONVERSION_UNCOMPRESSED, |
2151 | NULL, 0, NULL); | |
2152 | ||
2153 | encodedPoint = (unsigned char *) | |
2154 | OPENSSL_malloc(encoded_pt_len * | |
2155 | sizeof(unsigned char)); | |
2156 | bn_ctx = BN_CTX_new(); | |
2157 | if ((encodedPoint == NULL) || | |
2158 | (bn_ctx == NULL)) | |
2159 | { | |
2160 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2161 | goto err; | |
2162 | } | |
2163 | ||
2164 | /* Encode the public key */ | |
9dd84053 NL |
2165 | n = EC_POINT_point2oct(srvr_group, |
2166 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2167 | POINT_CONVERSION_UNCOMPRESSED, |
2168 | encodedPoint, encoded_pt_len, bn_ctx); | |
2169 | ||
2170 | *p = n; /* length of encoded point */ | |
57376542 | 2171 | /* Encoded point will be copied here */ |
ea262260 BM |
2172 | p += 1; |
2173 | /* copy the point */ | |
2174 | memcpy((unsigned char *)p, encodedPoint, n); | |
2175 | /* increment n to account for length field */ | |
2176 | n += 1; | |
2177 | } | |
2178 | ||
2179 | /* Free allocated memory */ | |
2180 | BN_CTX_free(bn_ctx); | |
2181 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2182 | if (clnt_ecdh != NULL) | |
ea262260 | 2183 | EC_KEY_free(clnt_ecdh); |
ea262260 BM |
2184 | EVP_PKEY_free(srvr_pub_pkey); |
2185 | } | |
2186 | #endif /* !OPENSSL_NO_ECDH */ | |
ddac1974 | 2187 | #ifndef OPENSSL_NO_PSK |
52b8dad8 | 2188 | else if (alg_k & SSL_kPSK) |
ddac1974 NL |
2189 | { |
2190 | char identity[PSK_MAX_IDENTITY_LEN]; | |
2191 | unsigned char *t = NULL; | |
2192 | unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4]; | |
2193 | unsigned int pre_ms_len = 0, psk_len = 0; | |
2194 | int psk_err = 1; | |
2195 | ||
2196 | n = 0; | |
2197 | if (s->psk_client_callback == NULL) | |
2198 | { | |
2199 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2200 | SSL_R_PSK_NO_CLIENT_CB); | |
2201 | goto err; | |
2202 | } | |
2203 | ||
2204 | psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint, | |
2205 | identity, PSK_MAX_IDENTITY_LEN, | |
2206 | psk_or_pre_ms, sizeof(psk_or_pre_ms)); | |
2207 | if (psk_len > PSK_MAX_PSK_LEN) | |
2208 | { | |
2209 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2210 | ERR_R_INTERNAL_ERROR); | |
2211 | goto psk_err; | |
2212 | } | |
2213 | else if (psk_len == 0) | |
2214 | { | |
2215 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2216 | SSL_R_PSK_IDENTITY_NOT_FOUND); | |
2217 | goto psk_err; | |
2218 | } | |
2219 | ||
2220 | /* create PSK pre_master_secret */ | |
2221 | pre_ms_len = 2+psk_len+2+psk_len; | |
2222 | t = psk_or_pre_ms; | |
2223 | memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len); | |
2224 | s2n(psk_len, t); | |
2225 | memset(t, 0, psk_len); | |
2226 | t+=psk_len; | |
2227 | s2n(psk_len, t); | |
2228 | ||
2229 | if (s->session->psk_identity_hint != NULL) | |
2230 | OPENSSL_free(s->session->psk_identity_hint); | |
2231 | s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint); | |
2232 | if (s->ctx->psk_identity_hint != NULL && | |
2233 | s->session->psk_identity_hint == NULL) | |
2234 | { | |
2235 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2236 | ERR_R_MALLOC_FAILURE); | |
2237 | goto psk_err; | |
2238 | } | |
2239 | ||
2240 | if (s->session->psk_identity != NULL) | |
2241 | OPENSSL_free(s->session->psk_identity); | |
2242 | s->session->psk_identity = BUF_strdup(identity); | |
2243 | if (s->session->psk_identity == NULL) | |
2244 | { | |
2245 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2246 | ERR_R_MALLOC_FAILURE); | |
2247 | goto psk_err; | |
2248 | } | |
2249 | ||
2250 | s->session->master_key_length = | |
2251 | s->method->ssl3_enc->generate_master_secret(s, | |
2252 | s->session->master_key, | |
2253 | psk_or_pre_ms, pre_ms_len); | |
2254 | n = strlen(identity); | |
2255 | s2n(n, p); | |
2256 | memcpy(p, identity, n); | |
2257 | n+=2; | |
2258 | psk_err = 0; | |
2259 | psk_err: | |
2260 | OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN); | |
52b8dad8 | 2261 | OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms)); |
ddac1974 NL |
2262 | if (psk_err != 0) |
2263 | { | |
2264 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); | |
2265 | goto err; | |
2266 | } | |
2267 | } | |
2268 | #endif | |
f9b3bff6 | 2269 | else |
d02b48c6 | 2270 | { |
ea262260 BM |
2271 | ssl3_send_alert(s, SSL3_AL_FATAL, |
2272 | SSL_AD_HANDSHAKE_FAILURE); | |
2273 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2274 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
2275 | goto err; |
2276 | } | |
2277 | ||
2278 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
2279 | l2n3(n,d); | |
2280 | ||
2281 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
2282 | /* number of bytes to write */ | |
2283 | s->init_num=n+4; | |
2284 | s->init_off=0; | |
2285 | } | |
2286 | ||
2287 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
2288 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2289 | err: | |
ea262260 BM |
2290 | #ifndef OPENSSL_NO_ECDH |
2291 | BN_CTX_free(bn_ctx); | |
2292 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2293 | if (clnt_ecdh != NULL) | |
ea262260 | 2294 | EC_KEY_free(clnt_ecdh); |
57376542 | 2295 | EVP_PKEY_free(srvr_pub_pkey); |
ea262260 | 2296 | #endif |
d02b48c6 RE |
2297 | return(-1); |
2298 | } | |
2299 | ||
36d16f8e | 2300 | int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
2301 | { |
2302 | unsigned char *p,*d; | |
2303 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
2304 | EVP_PKEY *pkey; | |
bc36ee62 | 2305 | #ifndef OPENSSL_NO_RSA |
ca7fea96 | 2306 | unsigned u=0; |
79df9d62 | 2307 | #endif |
d02b48c6 | 2308 | unsigned long n; |
3eeaab4b | 2309 | #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA) |
58964a49 RE |
2310 | int j; |
2311 | #endif | |
d02b48c6 RE |
2312 | |
2313 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) | |
2314 | { | |
2315 | d=(unsigned char *)s->init_buf->data; | |
2316 | p= &(d[4]); | |
2317 | pkey=s->cert->key->privatekey; | |
2318 | ||
58964a49 RE |
2319 | s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), |
2320 | &(data[MD5_DIGEST_LENGTH])); | |
d02b48c6 | 2321 | |
bc36ee62 | 2322 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2323 | if (pkey->type == EVP_PKEY_RSA) |
2324 | { | |
58964a49 RE |
2325 | s->method->ssl3_enc->cert_verify_mac(s, |
2326 | &(s->s3->finish_dgst1),&(data[0])); | |
1c80019a DSH |
2327 | if (RSA_sign(NID_md5_sha1, data, |
2328 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 2329 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
2330 | { |
2331 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
2332 | goto err; | |
2333 | } | |
ca7fea96 BL |
2334 | s2n(u,p); |
2335 | n=u+2; | |
d02b48c6 RE |
2336 | } |
2337 | else | |
2338 | #endif | |
bc36ee62 | 2339 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2340 | if (pkey->type == EVP_PKEY_DSA) |
2341 | { | |
2342 | if (!DSA_sign(pkey->save_type, | |
2343 | &(data[MD5_DIGEST_LENGTH]), | |
2344 | SHA_DIGEST_LENGTH,&(p[2]), | |
2345 | (unsigned int *)&j,pkey->pkey.dsa)) | |
2346 | { | |
2347 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
2348 | goto err; | |
2349 | } | |
2350 | s2n(j,p); | |
2351 | n=j+2; | |
2352 | } | |
2353 | else | |
ea262260 BM |
2354 | #endif |
2355 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 2356 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
2357 | { |
2358 | if (!ECDSA_sign(pkey->save_type, | |
2359 | &(data[MD5_DIGEST_LENGTH]), | |
2360 | SHA_DIGEST_LENGTH,&(p[2]), | |
9dd84053 | 2361 | (unsigned int *)&j,pkey->pkey.ec)) |
ea262260 BM |
2362 | { |
2363 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
2364 | ERR_R_ECDSA_LIB); | |
2365 | goto err; | |
2366 | } | |
2367 | s2n(j,p); | |
2368 | n=j+2; | |
2369 | } | |
2370 | else | |
d02b48c6 RE |
2371 | #endif |
2372 | { | |
5277d7cb | 2373 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2374 | goto err; |
2375 | } | |
2376 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; | |
2377 | l2n3(n,d); | |
2378 | ||
ba9f80c5 | 2379 | s->state=SSL3_ST_CW_CERT_VRFY_B; |
d02b48c6 RE |
2380 | s->init_num=(int)n+4; |
2381 | s->init_off=0; | |
2382 | } | |
2383 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2384 | err: | |
2385 | return(-1); | |
2386 | } | |
2387 | ||
36d16f8e | 2388 | int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
2389 | { |
2390 | X509 *x509=NULL; | |
2391 | EVP_PKEY *pkey=NULL; | |
2392 | int i; | |
2393 | unsigned long l; | |
2394 | ||
2395 | if (s->state == SSL3_ST_CW_CERT_A) | |
2396 | { | |
2397 | if ((s->cert == NULL) || | |
2398 | (s->cert->key->x509 == NULL) || | |
2399 | (s->cert->key->privatekey == NULL)) | |
2400 | s->state=SSL3_ST_CW_CERT_B; | |
2401 | else | |
2402 | s->state=SSL3_ST_CW_CERT_C; | |
2403 | } | |
2404 | ||
2405 | /* We need to get a client cert */ | |
2406 | if (s->state == SSL3_ST_CW_CERT_B) | |
2407 | { | |
2408 | /* If we get an error, we need to | |
2409 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
2410 | * We then get retied later */ | |
2411 | i=0; | |
2412 | if (s->ctx->client_cert_cb != NULL) | |
2413 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); | |
2414 | if (i < 0) | |
2415 | { | |
2416 | s->rwstate=SSL_X509_LOOKUP; | |
2417 | return(-1); | |
2418 | } | |
2419 | s->rwstate=SSL_NOTHING; | |
2420 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
2421 | { | |
2422 | s->state=SSL3_ST_CW_CERT_B; | |
2423 | if ( !SSL_use_certificate(s,x509) || | |
2424 | !SSL_use_PrivateKey(s,pkey)) | |
2425 | i=0; | |
2426 | } | |
2427 | else if (i == 1) | |
2428 | { | |
2429 | i=0; | |
2430 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
2431 | } | |
2432 | ||
2433 | if (x509 != NULL) X509_free(x509); | |
2434 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
2435 | if (i == 0) | |
2436 | { | |
58964a49 RE |
2437 | if (s->version == SSL3_VERSION) |
2438 | { | |
2439 | s->s3->tmp.cert_req=0; | |
2440 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
2441 | return(1); | |
2442 | } | |
2443 | else | |
2444 | { | |
2445 | s->s3->tmp.cert_req=2; | |
2446 | } | |
d02b48c6 RE |
2447 | } |
2448 | ||
2449 | /* Ok, we have a cert */ | |
2450 | s->state=SSL3_ST_CW_CERT_C; | |
2451 | } | |
2452 | ||
2453 | if (s->state == SSL3_ST_CW_CERT_C) | |
2454 | { | |
2455 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
2456 | l=ssl3_output_cert_chain(s, |
2457 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
d02b48c6 RE |
2458 | s->init_num=(int)l; |
2459 | s->init_off=0; | |
2460 | } | |
2461 | /* SSL3_ST_CW_CERT_D */ | |
2462 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2463 | } | |
2464 | ||
2465 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
2466 | ||
36d16f8e | 2467 | int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
2468 | { |
2469 | int i,idx; | |
52b8dad8 | 2470 | long alg_k,alg_a; |
d02b48c6 | 2471 | EVP_PKEY *pkey=NULL; |
b56bce4f | 2472 | SESS_CERT *sc; |
bc36ee62 | 2473 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 2474 | RSA *rsa; |
79df9d62 | 2475 | #endif |
bc36ee62 | 2476 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2477 | DH *dh; |
79df9d62 | 2478 | #endif |
d02b48c6 | 2479 | |
b56bce4f | 2480 | sc=s->session->sess_cert; |
b56bce4f | 2481 | if (sc == NULL) |
d02b48c6 | 2482 | { |
5277d7cb | 2483 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2484 | goto err; |
2485 | } | |
2486 | ||
52b8dad8 BM |
2487 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
2488 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
d02b48c6 RE |
2489 | |
2490 | /* we don't have a certificate */ | |
52b8dad8 | 2491 | if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK)) |
d02b48c6 RE |
2492 | return(1); |
2493 | ||
bc36ee62 | 2494 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 2495 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 2496 | #endif |
bc36ee62 | 2497 | #ifndef OPENSSL_NO_DH |
b56bce4f | 2498 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 2499 | #endif |
d02b48c6 RE |
2500 | |
2501 | /* This is the passed certificate */ | |
2502 | ||
b56bce4f | 2503 | idx=sc->peer_cert_type; |
ea262260 BM |
2504 | #ifndef OPENSSL_NO_ECDH |
2505 | if (idx == SSL_PKEY_ECC) | |
2506 | { | |
ed3ecd80 | 2507 | if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, |
ea262260 BM |
2508 | s->s3->tmp.new_cipher) == 0) |
2509 | { /* check failed */ | |
2510 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
52b8dad8 | 2511 | goto f_err; |
ea262260 BM |
2512 | } |
2513 | else | |
2514 | { | |
2515 | return 1; | |
2516 | } | |
2517 | } | |
2518 | #endif | |
b56bce4f BM |
2519 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
2520 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 2521 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2522 | |
2523 | ||
2524 | /* Check that we have a certificate if we require one */ | |
52b8dad8 | 2525 | if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
2526 | { |
2527 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
2528 | goto f_err; | |
2529 | } | |
bc36ee62 | 2530 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 2531 | else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
2532 | { |
2533 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
2534 | goto f_err; | |
2535 | } | |
2536 | #endif | |
bc36ee62 | 2537 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 2538 | if ((alg_k & SSL_kRSA) && |
d02b48c6 RE |
2539 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) |
2540 | { | |
2541 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
2542 | goto f_err; | |
2543 | } | |
79df9d62 | 2544 | #endif |
bc36ee62 | 2545 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2546 | if ((alg_k & SSL_kEDH) && |
d02b48c6 RE |
2547 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
2548 | { | |
2549 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
2550 | goto f_err; | |
2551 | } | |
52b8dad8 | 2552 | else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) |
d02b48c6 RE |
2553 | { |
2554 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
2555 | goto f_err; | |
2556 | } | |
bc36ee62 | 2557 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 2558 | else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) |
d02b48c6 RE |
2559 | { |
2560 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
2561 | goto f_err; | |
2562 | } | |
2563 | #endif | |
2564 | #endif | |
2565 | ||
018e57c7 | 2566 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 2567 | { |
bc36ee62 | 2568 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 2569 | if (alg_k & SSL_kRSA) |
d02b48c6 | 2570 | { |
06ab81f9 | 2571 | if (rsa == NULL |
70ef9c5a | 2572 | || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2573 | { |
2574 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
2575 | goto f_err; | |
2576 | } | |
2577 | } | |
2578 | else | |
2579 | #endif | |
bc36ee62 | 2580 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2581 | if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
2582 | { |
2583 | if (dh == NULL | |
70ef9c5a | 2584 | || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2585 | { |
2586 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
2587 | goto f_err; | |
2588 | } | |
2589 | } | |
2590 | else | |
2591 | #endif | |
2592 | { | |
2593 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
2594 | goto f_err; | |
2595 | } | |
2596 | } | |
2597 | return(1); | |
2598 | f_err: | |
58964a49 | 2599 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2600 | err: |
2601 | return(0); | |
2602 | } |