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d02b48c6 | 1 | /* ssl/s3_srvr.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 | */ | |
58 | ||
59 | #define REUSE_CIPHER_BUG | |
60 | ||
61 | #include <stdio.h> | |
62 | #include "buffer.h" | |
63 | #include "rand.h" | |
64 | #include "objects.h" | |
65 | #include "evp.h" | |
66 | #include "x509.h" | |
67 | #include "ssl_locl.h" | |
68 | ||
69 | #define BREAK break | |
70 | /* SSLerr(SSL_F_SSL3_ACCEPT,ERR_R_MALLOC_FAILURE); | |
71 | * SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE); | |
72 | * SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
73 | * SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,ERR_R_MALLOC_FAILURE); | |
74 | * SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
75 | */ | |
76 | ||
77 | #ifndef NOPROTO | |
78 | static int ssl3_get_client_hello(SSL *s); | |
79 | static int ssl3_send_server_hello(SSL *s); | |
80 | static int ssl3_send_server_key_exchange(SSL *s); | |
81 | static int ssl3_send_certificate_request(SSL *s); | |
82 | static int ssl3_send_server_done(SSL *s); | |
83 | static int ssl3_get_cert_verify(SSL *s); | |
84 | static int ssl3_get_client_key_exchange(SSL *s); | |
85 | static int ssl3_get_client_certificate(SSL *s); | |
86 | static int ssl3_send_hello_request(SSL *s); | |
87 | ||
88 | #else | |
89 | ||
90 | static int ssl3_get_client_hello(); | |
91 | static int ssl3_send_server_hello(); | |
92 | static int ssl3_send_server_key_exchange(); | |
93 | static int ssl3_send_certificate_request(); | |
94 | static int ssl3_send_server_done(); | |
95 | static int ssl3_get_cert_verify(); | |
96 | static int ssl3_get_client_key_exchange(); | |
97 | static int ssl3_get_client_certificate(); | |
98 | static int ssl3_send_hello_request(); | |
d02b48c6 RE |
99 | |
100 | #endif | |
101 | ||
102 | static SSL_METHOD *ssl3_get_server_method(ver) | |
103 | int ver; | |
104 | { | |
58964a49 | 105 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
106 | return(SSLv3_server_method()); |
107 | else | |
108 | return(NULL); | |
109 | } | |
110 | ||
111 | SSL_METHOD *SSLv3_server_method() | |
112 | { | |
113 | static int init=1; | |
114 | static SSL_METHOD SSLv3_server_data; | |
115 | ||
116 | if (init) | |
117 | { | |
118 | init=0; | |
119 | memcpy((char *)&SSLv3_server_data,(char *)sslv3_base_method(), | |
120 | sizeof(SSL_METHOD)); | |
121 | SSLv3_server_data.ssl_accept=ssl3_accept; | |
122 | SSLv3_server_data.get_ssl_method=ssl3_get_server_method; | |
123 | } | |
124 | return(&SSLv3_server_data); | |
125 | } | |
126 | ||
127 | int ssl3_accept(s) | |
128 | SSL *s; | |
129 | { | |
130 | BUF_MEM *buf; | |
131 | unsigned long l,Time=time(NULL); | |
132 | void (*cb)()=NULL; | |
133 | long num1; | |
134 | int ret= -1; | |
135 | CERT *ct; | |
58964a49 | 136 | BIO *under; |
d02b48c6 RE |
137 | int new_state,state,skip=0; |
138 | ||
139 | RAND_seed((unsigned char *)&Time,sizeof(Time)); | |
140 | ERR_clear_error(); | |
58964a49 | 141 | clear_sys_error(); |
d02b48c6 RE |
142 | |
143 | if (s->info_callback != NULL) | |
144 | cb=s->info_callback; | |
145 | else if (s->ctx->info_callback != NULL) | |
146 | cb=s->ctx->info_callback; | |
147 | ||
148 | /* init things to blank */ | |
149 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); | |
150 | s->in_handshake++; | |
151 | ||
152 | #ifdef undef | |
153 | /* FIX THIS EAY EAY EAY */ | |
154 | /* we don't actually need a cert, we just need a cert or a DH_tmp */ | |
155 | if (((s->session == NULL) || (s->session->cert == NULL)) && | |
156 | (s->cert == NULL)) | |
157 | { | |
158 | SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_NO_CERTIFICATE_SET); | |
159 | ret= -1; | |
160 | goto end; | |
161 | } | |
162 | #endif | |
163 | ||
164 | for (;;) | |
165 | { | |
166 | state=s->state; | |
167 | ||
168 | switch (s->state) | |
169 | { | |
170 | case SSL_ST_RENEGOTIATE: | |
171 | s->new_session=1; | |
172 | /* s->state=SSL_ST_ACCEPT; */ | |
173 | ||
174 | case SSL_ST_BEFORE: | |
175 | case SSL_ST_ACCEPT: | |
176 | case SSL_ST_BEFORE|SSL_ST_ACCEPT: | |
177 | case SSL_ST_OK|SSL_ST_ACCEPT: | |
178 | ||
179 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); | |
180 | ||
58964a49 RE |
181 | if ((s->version>>8) != 3) |
182 | abort(); | |
183 | /* s->version=SSL3_VERSION; */ | |
d02b48c6 RE |
184 | s->type=SSL_ST_ACCEPT; |
185 | ||
186 | if (s->init_buf == NULL) | |
187 | { | |
188 | if ((buf=BUF_MEM_new()) == NULL) | |
189 | { | |
190 | ret= -1; | |
191 | goto end; | |
192 | } | |
193 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
194 | { | |
195 | ret= -1; | |
196 | goto end; | |
197 | } | |
198 | s->init_buf=buf; | |
199 | } | |
200 | ||
201 | if (!ssl3_setup_buffers(s)) | |
202 | { | |
203 | ret= -1; | |
204 | goto end; | |
205 | } | |
206 | ||
207 | /* Ok, we now need to push on a buffering BIO so that | |
208 | * the output is sent in a way that TCP likes :-) | |
209 | */ | |
58964a49 | 210 | if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; } |
d02b48c6 | 211 | |
d02b48c6 RE |
212 | s->init_num=0; |
213 | ||
214 | if (s->state != SSL_ST_RENEGOTIATE) | |
215 | { | |
216 | s->state=SSL3_ST_SR_CLNT_HELLO_A; | |
217 | ssl3_init_finished_mac(s); | |
58964a49 | 218 | s->ctx->sess_accept++; |
d02b48c6 RE |
219 | } |
220 | else | |
221 | { | |
58964a49 | 222 | s->ctx->sess_accept_renegotiate++; |
d02b48c6 RE |
223 | s->state=SSL3_ST_SW_HELLO_REQ_A; |
224 | } | |
225 | break; | |
226 | ||
227 | case SSL3_ST_SW_HELLO_REQ_A: | |
228 | case SSL3_ST_SW_HELLO_REQ_B: | |
229 | ||
230 | s->shutdown=0; | |
231 | ret=ssl3_send_hello_request(s); | |
232 | if (ret <= 0) goto end; | |
233 | s->s3->tmp.next_state=SSL3_ST_SW_HELLO_REQ_C; | |
234 | s->state=SSL3_ST_SW_FLUSH; | |
235 | s->init_num=0; | |
236 | ||
237 | ssl3_init_finished_mac(s); | |
238 | break; | |
239 | ||
240 | case SSL3_ST_SW_HELLO_REQ_C: | |
241 | /* remove buffering on output */ | |
242 | under=BIO_pop(s->wbio); | |
243 | if (under != NULL) | |
244 | s->wbio=under; | |
245 | else | |
246 | abort(); /* ok */ | |
247 | BIO_free(s->bbio); | |
248 | s->bbio=NULL; | |
249 | ||
250 | s->state=SSL_ST_OK; | |
251 | ret=1; | |
252 | goto end; | |
58964a49 | 253 | /* break; */ |
d02b48c6 RE |
254 | |
255 | case SSL3_ST_SR_CLNT_HELLO_A: | |
256 | case SSL3_ST_SR_CLNT_HELLO_B: | |
257 | case SSL3_ST_SR_CLNT_HELLO_C: | |
258 | ||
259 | s->shutdown=0; | |
260 | ret=ssl3_get_client_hello(s); | |
261 | if (ret <= 0) goto end; | |
262 | s->state=SSL3_ST_SW_SRVR_HELLO_A; | |
263 | s->init_num=0; | |
264 | break; | |
265 | ||
266 | case SSL3_ST_SW_SRVR_HELLO_A: | |
267 | case SSL3_ST_SW_SRVR_HELLO_B: | |
268 | ret=ssl3_send_server_hello(s); | |
269 | if (ret <= 0) goto end; | |
270 | ||
271 | if (s->hit) | |
272 | s->state=SSL3_ST_SW_CHANGE_A; | |
273 | else | |
274 | s->state=SSL3_ST_SW_CERT_A; | |
275 | s->init_num=0; | |
276 | break; | |
277 | ||
278 | case SSL3_ST_SW_CERT_A: | |
279 | case SSL3_ST_SW_CERT_B: | |
280 | /* Check if it is anon DH */ | |
281 | if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) | |
282 | { | |
283 | ret=ssl3_send_server_certificate(s); | |
284 | if (ret <= 0) goto end; | |
285 | } | |
286 | else | |
287 | skip=1; | |
288 | s->state=SSL3_ST_SW_KEY_EXCH_A; | |
289 | s->init_num=0; | |
290 | break; | |
291 | ||
292 | case SSL3_ST_SW_KEY_EXCH_A: | |
293 | case SSL3_ST_SW_KEY_EXCH_B: | |
294 | l=s->s3->tmp.new_cipher->algorithms; | |
295 | if (s->session->cert == NULL) | |
296 | { | |
297 | if (s->cert != NULL) | |
298 | { | |
299 | CRYPTO_add(&s->cert->references,1,CRYPTO_LOCK_SSL_CERT); | |
300 | s->session->cert=s->cert; | |
301 | } | |
302 | else | |
303 | { | |
304 | CRYPTO_add(&s->ctx->default_cert->references,1,CRYPTO_LOCK_SSL_CERT); | |
305 | s->session->cert=s->ctx->default_cert; | |
306 | } | |
307 | } | |
308 | ct=s->session->cert; | |
309 | ||
310 | /* clear this, it may get reset by | |
311 | * send_server_key_exchange */ | |
58964a49 | 312 | if (s->options & SSL_OP_EPHEMERAL_RSA) |
d02b48c6 RE |
313 | s->s3->tmp.use_rsa_tmp=1; |
314 | else | |
315 | s->s3->tmp.use_rsa_tmp=0; | |
316 | ||
317 | /* only send if a DH key exchange, fortezza or | |
318 | * RSA but we have a sign only certificate */ | |
319 | if ( s->s3->tmp.use_rsa_tmp || | |
320 | (l & (SSL_DH|SSL_kFZA)) || | |
321 | ((l & SSL_kRSA) && | |
322 | ((ct->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL)|| | |
323 | ((l & SSL_EXPORT) && | |
324 | (EVP_PKEY_size(ct->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > 512) | |
325 | ) | |
326 | ) | |
327 | ) | |
328 | ) | |
329 | { | |
330 | ret=ssl3_send_server_key_exchange(s); | |
331 | if (ret <= 0) goto end; | |
332 | } | |
333 | else | |
334 | skip=1; | |
335 | ||
336 | s->state=SSL3_ST_SW_CERT_REQ_A; | |
337 | s->init_num=0; | |
338 | break; | |
339 | ||
340 | case SSL3_ST_SW_CERT_REQ_A: | |
341 | case SSL3_ST_SW_CERT_REQ_B: | |
342 | if (!(s->verify_mode & SSL_VERIFY_PEER) || | |
343 | ((s->session->peer != NULL) && | |
344 | (s->verify_mode & SSL_VERIFY_CLIENT_ONCE))) | |
345 | { | |
346 | /* no cert request */ | |
347 | skip=1; | |
58964a49 | 348 | s->s3->tmp.cert_request=0; |
d02b48c6 RE |
349 | s->state=SSL3_ST_SW_SRVR_DONE_A; |
350 | } | |
351 | else | |
352 | { | |
58964a49 | 353 | s->s3->tmp.cert_request=1; |
d02b48c6 RE |
354 | ret=ssl3_send_certificate_request(s); |
355 | if (ret <= 0) goto end; | |
356 | s->state=SSL3_ST_SW_SRVR_DONE_A; | |
357 | s->init_num=0; | |
358 | } | |
359 | break; | |
360 | ||
361 | case SSL3_ST_SW_SRVR_DONE_A: | |
362 | case SSL3_ST_SW_SRVR_DONE_B: | |
363 | ret=ssl3_send_server_done(s); | |
364 | if (ret <= 0) goto end; | |
365 | s->s3->tmp.next_state=SSL3_ST_SR_CERT_A; | |
366 | s->state=SSL3_ST_SW_FLUSH; | |
367 | s->init_num=0; | |
368 | break; | |
369 | ||
370 | case SSL3_ST_SW_FLUSH: | |
371 | /* number of bytes to be flushed */ | |
372 | num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); | |
373 | if (num1 > 0) | |
374 | { | |
375 | s->rwstate=SSL_WRITING; | |
376 | num1=BIO_flush(s->wbio); | |
377 | if (num1 <= 0) { ret= -1; goto end; } | |
378 | s->rwstate=SSL_NOTHING; | |
379 | } | |
380 | ||
381 | s->state=s->s3->tmp.next_state; | |
382 | break; | |
383 | ||
384 | case SSL3_ST_SR_CERT_A: | |
385 | case SSL3_ST_SR_CERT_B: | |
386 | /* could be sent for a DH cert, even if we | |
387 | * have not asked for it :-) */ | |
388 | ret=ssl3_get_client_certificate(s); | |
389 | if (ret <= 0) goto end; | |
390 | s->init_num=0; | |
391 | s->state=SSL3_ST_SR_KEY_EXCH_A; | |
392 | break; | |
393 | ||
394 | case SSL3_ST_SR_KEY_EXCH_A: | |
395 | case SSL3_ST_SR_KEY_EXCH_B: | |
396 | ret=ssl3_get_client_key_exchange(s); | |
397 | if (ret <= 0) goto end; | |
398 | s->state=SSL3_ST_SR_CERT_VRFY_A; | |
399 | s->init_num=0; | |
400 | ||
401 | /* We need to get hashes here so if there is | |
402 | * a client cert, it can be verified */ | |
58964a49 RE |
403 | s->method->ssl3_enc->cert_verify_mac(s, |
404 | &(s->s3->finish_dgst1), | |
405 | &(s->s3->tmp.finish_md[0])); | |
406 | s->method->ssl3_enc->cert_verify_mac(s, | |
407 | &(s->s3->finish_dgst2), | |
408 | &(s->s3->tmp.finish_md[MD5_DIGEST_LENGTH])); | |
d02b48c6 RE |
409 | |
410 | break; | |
411 | ||
412 | case SSL3_ST_SR_CERT_VRFY_A: | |
413 | case SSL3_ST_SR_CERT_VRFY_B: | |
414 | ||
415 | /* we should decide if we expected this one */ | |
416 | ret=ssl3_get_cert_verify(s); | |
417 | if (ret <= 0) goto end; | |
418 | ||
419 | s->state=SSL3_ST_SR_FINISHED_A; | |
420 | s->init_num=0; | |
421 | break; | |
422 | ||
423 | case SSL3_ST_SR_FINISHED_A: | |
424 | case SSL3_ST_SR_FINISHED_B: | |
425 | ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A, | |
58964a49 | 426 | SSL3_ST_SR_FINISHED_B); |
d02b48c6 RE |
427 | if (ret <= 0) goto end; |
428 | if (s->hit) | |
429 | s->state=SSL_ST_OK; | |
430 | else | |
431 | s->state=SSL3_ST_SW_CHANGE_A; | |
432 | s->init_num=0; | |
433 | break; | |
434 | ||
435 | case SSL3_ST_SW_CHANGE_A: | |
436 | case SSL3_ST_SW_CHANGE_B: | |
437 | ||
438 | s->session->cipher=s->s3->tmp.new_cipher; | |
58964a49 RE |
439 | if (!s->method->ssl3_enc->setup_key_block(s)) |
440 | { ret= -1; goto end; } | |
d02b48c6 RE |
441 | |
442 | ret=ssl3_send_change_cipher_spec(s, | |
443 | SSL3_ST_SW_CHANGE_A,SSL3_ST_SW_CHANGE_B); | |
444 | ||
445 | if (ret <= 0) goto end; | |
446 | s->state=SSL3_ST_SW_FINISHED_A; | |
447 | s->init_num=0; | |
448 | ||
58964a49 | 449 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
450 | SSL3_CHANGE_CIPHER_SERVER_WRITE)) |
451 | { | |
452 | ret= -1; | |
453 | goto end; | |
454 | } | |
455 | ||
456 | break; | |
457 | ||
458 | case SSL3_ST_SW_FINISHED_A: | |
459 | case SSL3_ST_SW_FINISHED_B: | |
460 | ret=ssl3_send_finished(s, | |
461 | SSL3_ST_SW_FINISHED_A,SSL3_ST_SW_FINISHED_B, | |
58964a49 RE |
462 | s->method->ssl3_enc->server_finished, |
463 | s->method->ssl3_enc->server_finished_len); | |
d02b48c6 RE |
464 | if (ret <= 0) goto end; |
465 | s->state=SSL3_ST_SW_FLUSH; | |
466 | if (s->hit) | |
467 | s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A; | |
468 | else | |
469 | s->s3->tmp.next_state=SSL_ST_OK; | |
470 | s->init_num=0; | |
471 | break; | |
472 | ||
473 | case SSL_ST_OK: | |
474 | /* clean a few things up */ | |
475 | ssl3_cleanup_key_block(s); | |
476 | ||
477 | BUF_MEM_free(s->init_buf); | |
478 | s->init_buf=NULL; | |
479 | ||
480 | /* remove buffering on output */ | |
481 | under=BIO_pop(s->wbio); | |
482 | if (under != NULL) | |
483 | s->wbio=under; | |
484 | else | |
485 | abort(); /* ok */ | |
486 | BIO_free(s->bbio); | |
487 | s->bbio=NULL; | |
488 | ||
489 | s->new_session=0; | |
490 | s->init_num=0; | |
491 | ||
492 | ssl_update_cache(s,SSL_SESS_CACHE_SERVER); | |
493 | ||
494 | s->ctx->sess_accept_good++; | |
495 | /* s->server=1; */ | |
496 | s->handshake_func=ssl3_accept; | |
497 | ret=1; | |
498 | ||
499 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
500 | ||
501 | goto end; | |
58964a49 | 502 | /* break; */ |
d02b48c6 RE |
503 | |
504 | default: | |
505 | SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_UNKNOWN_STATE); | |
506 | ret= -1; | |
507 | goto end; | |
58964a49 | 508 | /* break; */ |
d02b48c6 RE |
509 | } |
510 | ||
511 | if (!s->s3->tmp.reuse_message && !skip) | |
512 | { | |
58964a49 RE |
513 | if (s->debug) |
514 | { | |
515 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
516 | goto end; | |
517 | } | |
518 | ||
d02b48c6 RE |
519 | |
520 | if ((cb != NULL) && (s->state != state)) | |
521 | { | |
522 | new_state=s->state; | |
523 | s->state=state; | |
524 | cb(s,SSL_CB_ACCEPT_LOOP,1); | |
525 | s->state=new_state; | |
526 | } | |
527 | } | |
528 | skip=0; | |
529 | } | |
530 | end: | |
531 | /* BIO_flush(s->wbio); */ | |
532 | ||
533 | if (cb != NULL) | |
534 | cb(s,SSL_CB_ACCEPT_EXIT,ret); | |
535 | s->in_handshake--; | |
536 | return(ret); | |
537 | } | |
538 | ||
539 | static int ssl3_send_hello_request(s) | |
540 | SSL *s; | |
541 | { | |
542 | unsigned char *p; | |
543 | ||
544 | if (s->state == SSL3_ST_SW_HELLO_REQ_A) | |
545 | { | |
546 | p=(unsigned char *)s->init_buf->data; | |
547 | *(p++)=SSL3_MT_CLIENT_REQUEST; | |
548 | *(p++)=0; | |
549 | *(p++)=0; | |
550 | *(p++)=0; | |
551 | ||
552 | s->state=SSL3_ST_SW_HELLO_REQ_B; | |
553 | /* number of bytes to write */ | |
554 | s->init_num=4; | |
555 | s->init_off=0; | |
556 | } | |
557 | ||
558 | /* SSL3_ST_SW_HELLO_REQ_B */ | |
559 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
560 | } | |
561 | ||
562 | static int ssl3_get_client_hello(s) | |
563 | SSL *s; | |
564 | { | |
565 | int i,j,ok,al,ret= -1; | |
566 | long n; | |
567 | unsigned long id; | |
568 | unsigned char *p,*d; | |
569 | SSL_CIPHER *c; | |
570 | STACK *ciphers=NULL; | |
571 | ||
58964a49 RE |
572 | /* We do this so that we will respond with our native type. |
573 | * If we are TLSv1 and we get SSLv3, we will respond with TLSv1, | |
574 | * This down switching should be handled by a different method. | |
575 | * If we are SSLv3, we will respond with SSLv3, even if prompted with | |
576 | * TLSv1. | |
577 | */ | |
d02b48c6 RE |
578 | if (s->state == SSL3_ST_SR_CLNT_HELLO_A) |
579 | { | |
580 | s->first_packet=1; | |
581 | s->state=SSL3_ST_SR_CLNT_HELLO_B; | |
582 | } | |
583 | n=ssl3_get_message(s, | |
584 | SSL3_ST_SR_CLNT_HELLO_B, | |
585 | SSL3_ST_SR_CLNT_HELLO_C, | |
586 | SSL3_MT_CLIENT_HELLO, | |
587 | SSL3_RT_MAX_PLAIN_LENGTH, | |
588 | &ok); | |
589 | ||
590 | if (!ok) return((int)n); | |
591 | d=p=(unsigned char *)s->init_buf->data; | |
592 | ||
58964a49 RE |
593 | /* The version number has already been checked in ssl3_get_message. |
594 | * I a native TLSv1/SSLv3 method, the match must be correct except | |
595 | * perhaps for the first message */ | |
d02b48c6 RE |
596 | p+=2; |
597 | ||
598 | /* load the client random */ | |
599 | memcpy(s->s3->client_random,p,SSL3_RANDOM_SIZE); | |
600 | p+=SSL3_RANDOM_SIZE; | |
601 | ||
602 | /* get the session-id */ | |
603 | j= *(p++); | |
604 | ||
605 | s->hit=0; | |
606 | if (j == 0) | |
607 | { | |
608 | if (!ssl_get_new_session(s,1)) | |
609 | goto err; | |
610 | } | |
611 | else | |
612 | { | |
58964a49 | 613 | i=ssl_get_prev_session(s,p,j); |
d02b48c6 RE |
614 | if (i == 1) |
615 | { /* previous session */ | |
616 | s->hit=1; | |
617 | } | |
618 | else | |
619 | { | |
620 | if (!ssl_get_new_session(s,1)) | |
621 | goto err; | |
622 | } | |
623 | } | |
624 | ||
625 | p+=j; | |
626 | n2s(p,i); | |
627 | if ((i == 0) && (j != 0)) | |
628 | { | |
629 | /* we need a cipher if we are not resuming a session */ | |
58964a49 | 630 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
631 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_CIPHERS_SPECIFIED); |
632 | goto f_err; | |
633 | } | |
634 | if ((i+p) > (d+n)) | |
635 | { | |
636 | /* not enough data */ | |
58964a49 | 637 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
638 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_LENGTH_MISMATCH); |
639 | goto f_err; | |
640 | } | |
641 | if ((i > 0) && (ssl_bytes_to_cipher_list(s,p,i,&(ciphers)) | |
642 | == NULL)) | |
643 | { | |
644 | goto err; | |
645 | } | |
646 | p+=i; | |
647 | ||
648 | /* If it is a hit, check that the cipher is in the list */ | |
649 | if ((s->hit) && (i > 0)) | |
650 | { | |
651 | j=0; | |
652 | id=s->session->cipher->id; | |
653 | ||
654 | for (i=0; i<sk_num(ciphers); i++) | |
655 | { | |
656 | c=(SSL_CIPHER *)sk_value(ciphers,i); | |
657 | if (c->id == id) | |
658 | { | |
659 | j=1; | |
660 | break; | |
661 | } | |
662 | } | |
663 | if (j == 0) | |
664 | { | |
58964a49 | 665 | if ((s->options & SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG) && (sk_num(ciphers) == 1)) |
d02b48c6 RE |
666 | { |
667 | /* Very bad for multi-threading.... */ | |
668 | s->session->cipher= | |
669 | (SSL_CIPHER *)sk_value(ciphers,0); | |
670 | } | |
671 | else | |
672 | { | |
673 | /* we need to have the cipher in the cipher | |
674 | * list if we are asked to reuse it */ | |
58964a49 | 675 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
676 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_REQUIRED_CIPHER_MISSING); |
677 | goto f_err; | |
678 | } | |
679 | } | |
680 | } | |
681 | ||
682 | /* compression */ | |
683 | i= *(p++); | |
684 | for (j=0; j<i; j++) | |
685 | if (p[j] == 0) break; | |
686 | ||
687 | p+=i; | |
688 | if (j >= i) | |
689 | { | |
690 | /* no compress */ | |
58964a49 | 691 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
692 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_COMPRESSION_SPECIFIED); |
693 | goto f_err; | |
694 | } | |
695 | ||
58964a49 RE |
696 | /* TLS does not mind if there is extra stuff */ |
697 | if (s->version == SSL3_VERSION) | |
d02b48c6 | 698 | { |
58964a49 RE |
699 | if (p > (d+n)) |
700 | { | |
701 | /* wrong number of bytes, | |
702 | * there could be more to follow */ | |
703 | al=SSL_AD_DECODE_ERROR; | |
704 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_LENGTH_MISMATCH); | |
705 | goto f_err; | |
706 | } | |
d02b48c6 RE |
707 | } |
708 | ||
709 | /* do nothing with compression */ | |
710 | ||
711 | /* Given s->session->ciphers and ssl_get_ciphers_by_id(s), we must | |
712 | * pick a cipher */ | |
713 | ||
714 | if (!s->hit) | |
715 | { | |
716 | if (s->session->ciphers != NULL) | |
717 | sk_free(s->session->ciphers); | |
718 | s->session->ciphers=ciphers; | |
719 | if (ciphers == NULL) | |
720 | { | |
58964a49 | 721 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
722 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_CIPHERS_PASSED); |
723 | goto f_err; | |
724 | } | |
725 | ciphers=NULL; | |
726 | c=ssl3_choose_cipher(s,s->session->ciphers, | |
727 | ssl_get_ciphers_by_id(s)); | |
728 | ||
729 | if (c == NULL) | |
730 | { | |
58964a49 | 731 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
732 | SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_SHARED_CIPHER); |
733 | goto f_err; | |
734 | } | |
735 | s->s3->tmp.new_cipher=c; | |
736 | } | |
737 | else | |
738 | { | |
739 | /* Session-id reuse */ | |
740 | #ifdef REUSE_CIPHER_BUG | |
741 | STACK *sk; | |
742 | SSL_CIPHER *nc=NULL; | |
743 | SSL_CIPHER *ec=NULL; | |
744 | ||
58964a49 | 745 | if (s->options & SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG) |
d02b48c6 RE |
746 | { |
747 | sk=s->session->ciphers; | |
748 | for (i=0; i<sk_num(sk); i++) | |
749 | { | |
750 | c=(SSL_CIPHER *)sk_value(sk,i); | |
751 | if (c->algorithms & SSL_eNULL) | |
752 | nc=c; | |
753 | if (c->algorithms & SSL_EXP) | |
754 | ec=c; | |
755 | } | |
756 | if (nc != NULL) | |
757 | s->s3->tmp.new_cipher=nc; | |
758 | else if (ec != NULL) | |
759 | s->s3->tmp.new_cipher=ec; | |
760 | else | |
761 | s->s3->tmp.new_cipher=s->session->cipher; | |
762 | } | |
763 | else | |
764 | #endif | |
765 | s->s3->tmp.new_cipher=s->session->cipher; | |
766 | } | |
767 | ||
768 | /* we now have the following setup. | |
769 | * client_random | |
770 | * cipher_list - our prefered list of ciphers | |
771 | * ciphers - the clients prefered list of ciphers | |
772 | * compression - basically ignored right now | |
773 | * ssl version is set - sslv3 | |
774 | * s->session - The ssl session has been setup. | |
775 | * s->hit - sesson reuse flag | |
776 | * s->tmp.new_cipher - the new cipher to use. | |
777 | */ | |
778 | ||
779 | ret=1; | |
780 | if (0) | |
781 | { | |
782 | f_err: | |
783 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
784 | } | |
785 | err: | |
786 | if (ciphers != NULL) sk_free(ciphers); | |
787 | return(ret); | |
788 | } | |
789 | ||
790 | static int ssl3_send_server_hello(s) | |
791 | SSL *s; | |
792 | { | |
793 | unsigned char *buf; | |
794 | unsigned char *p,*d; | |
795 | int i,sl; | |
796 | unsigned long l,Time; | |
797 | ||
798 | if (s->state == SSL3_ST_SW_SRVR_HELLO_A) | |
799 | { | |
800 | buf=(unsigned char *)s->init_buf->data; | |
801 | p=s->s3->server_random; | |
802 | Time=time(NULL); /* Time */ | |
803 | l2n(Time,p); | |
804 | RAND_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time)); | |
805 | /* Do the message type and length last */ | |
806 | d=p= &(buf[4]); | |
807 | ||
58964a49 RE |
808 | *(p++)=s->version>>8; |
809 | *(p++)=s->version&0xff; | |
d02b48c6 RE |
810 | |
811 | /* Random stuff */ | |
812 | memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE); | |
813 | p+=SSL3_RANDOM_SIZE; | |
814 | ||
815 | /* now in theory we have 3 options to sending back the | |
816 | * session id. If it is a re-use, we send back the | |
817 | * old session-id, if it is a new session, we send | |
818 | * back the new session-id or we send back a 0 length | |
819 | * session-id if we want it to be single use. | |
820 | * Currently I will not implement the '0' length session-id | |
58964a49 | 821 | * 12-Jan-98 - I'll now support the '0' length stuff. |
d02b48c6 | 822 | */ |
58964a49 RE |
823 | if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)) |
824 | s->session->session_id_length=0; | |
d02b48c6 RE |
825 | |
826 | sl=s->session->session_id_length; | |
827 | *(p++)=sl; | |
828 | memcpy(p,s->session->session_id,sl); | |
829 | p+=sl; | |
830 | ||
831 | /* put the cipher */ | |
832 | i=ssl3_put_cipher_by_char(s->s3->tmp.new_cipher,p); | |
833 | p+=i; | |
834 | ||
835 | /* put the compression method */ | |
836 | *(p++)=0; | |
837 | ||
838 | /* do the header */ | |
839 | l=(p-d); | |
840 | d=buf; | |
841 | *(d++)=SSL3_MT_SERVER_HELLO; | |
842 | l2n3(l,d); | |
843 | ||
844 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
845 | /* number of bytes to write */ | |
846 | s->init_num=p-buf; | |
847 | s->init_off=0; | |
848 | } | |
849 | ||
850 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
851 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
852 | } | |
853 | ||
854 | static int ssl3_send_server_done(s) | |
855 | SSL *s; | |
856 | { | |
857 | unsigned char *p; | |
858 | ||
859 | if (s->state == SSL3_ST_SW_SRVR_DONE_A) | |
860 | { | |
861 | p=(unsigned char *)s->init_buf->data; | |
862 | ||
863 | /* do the header */ | |
864 | *(p++)=SSL3_MT_SERVER_DONE; | |
865 | *(p++)=0; | |
866 | *(p++)=0; | |
867 | *(p++)=0; | |
868 | ||
869 | s->state=SSL3_ST_SW_SRVR_DONE_B; | |
870 | /* number of bytes to write */ | |
871 | s->init_num=4; | |
872 | s->init_off=0; | |
873 | } | |
874 | ||
875 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
876 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
877 | } | |
878 | ||
879 | static int ssl3_send_server_key_exchange(s) | |
880 | SSL *s; | |
881 | { | |
882 | #ifndef NO_RSA | |
883 | unsigned char *q; | |
884 | int j,num; | |
885 | RSA *rsa; | |
886 | unsigned char md_buf[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
887 | #endif | |
888 | #ifndef NO_DH | |
889 | DH *dh,*dhp; | |
890 | #endif | |
891 | EVP_PKEY *pkey; | |
892 | unsigned char *p,*d; | |
893 | int al,i; | |
894 | unsigned long type; | |
895 | int n; | |
896 | CERT *cert; | |
897 | BIGNUM *r[4]; | |
898 | int nr[4],kn; | |
899 | BUF_MEM *buf; | |
900 | EVP_MD_CTX md_ctx; | |
901 | ||
902 | if (s->state == SSL3_ST_SW_KEY_EXCH_A) | |
903 | { | |
904 | type=s->s3->tmp.new_cipher->algorithms & SSL_MKEY_MASK; | |
905 | cert=s->session->cert; | |
906 | ||
907 | buf=s->init_buf; | |
908 | ||
909 | r[0]=r[1]=r[2]=r[3]=NULL; | |
910 | n=0; | |
911 | #ifndef NO_RSA | |
912 | if (type & SSL_kRSA) | |
913 | { | |
914 | rsa=cert->rsa_tmp; | |
915 | if ((rsa == NULL) && (s->ctx->default_cert->rsa_tmp_cb != NULL)) | |
916 | { | |
917 | rsa=s->ctx->default_cert->rsa_tmp_cb(s, | |
918 | (s->s3->tmp.new_cipher->algorithms| | |
919 | SSL_NOT_EXP)?0:1); | |
920 | CRYPTO_add(&rsa->references,1,CRYPTO_LOCK_RSA); | |
921 | cert->rsa_tmp=rsa; | |
922 | } | |
923 | if (rsa == NULL) | |
924 | { | |
58964a49 | 925 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
926 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_RSA_KEY); |
927 | goto f_err; | |
928 | } | |
929 | r[0]=rsa->n; | |
930 | r[1]=rsa->e; | |
931 | s->s3->tmp.use_rsa_tmp=1; | |
932 | } | |
933 | else | |
934 | #endif | |
935 | #ifndef NO_DH | |
936 | if (type & SSL_kEDH) | |
937 | { | |
938 | dhp=cert->dh_tmp; | |
939 | if ((dhp == NULL) && (cert->dh_tmp_cb != NULL)) | |
940 | dhp=cert->dh_tmp_cb(s, | |
941 | (s->s3->tmp.new_cipher->algorithms| | |
942 | SSL_NOT_EXP)?0:1); | |
943 | if (dhp == NULL) | |
944 | { | |
58964a49 | 945 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
946 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY); |
947 | goto f_err; | |
948 | } | |
949 | if ((dh=DHparams_dup(dhp)) == NULL) | |
950 | { | |
951 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB); | |
952 | goto err; | |
953 | } | |
954 | ||
955 | s->s3->tmp.dh=dh; | |
956 | if (((dhp->pub_key == NULL) || | |
957 | (dhp->priv_key == NULL) || | |
58964a49 | 958 | (s->options & SSL_OP_SINGLE_DH_USE)) && |
d02b48c6 RE |
959 | (!DH_generate_key(dh))) |
960 | { | |
961 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB); | |
962 | goto err; | |
963 | } | |
964 | else | |
965 | { | |
966 | dh->pub_key=BN_dup(dhp->pub_key); | |
967 | dh->priv_key=BN_dup(dhp->priv_key); | |
968 | if ((dh->pub_key == NULL) || | |
969 | (dh->priv_key == NULL)) | |
970 | { | |
971 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB); | |
972 | goto err; | |
973 | } | |
974 | } | |
975 | r[0]=dh->p; | |
976 | r[1]=dh->g; | |
977 | r[2]=dh->pub_key; | |
978 | } | |
979 | else | |
980 | #endif | |
981 | { | |
58964a49 | 982 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
983 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); |
984 | goto f_err; | |
985 | } | |
986 | for (i=0; r[i] != NULL; i++) | |
987 | { | |
988 | nr[i]=BN_num_bytes(r[i]); | |
989 | n+=2+nr[i]; | |
990 | } | |
991 | ||
992 | if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) | |
993 | { | |
994 | if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher)) | |
995 | == NULL) | |
996 | { | |
58964a49 | 997 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
998 | goto f_err; |
999 | } | |
1000 | kn=EVP_PKEY_size(pkey); | |
1001 | } | |
1002 | else | |
1003 | { | |
1004 | pkey=NULL; | |
1005 | kn=0; | |
1006 | } | |
1007 | ||
1008 | if (!BUF_MEM_grow(buf,n+4+kn)) | |
1009 | { | |
1010 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_BUF); | |
1011 | goto err; | |
1012 | } | |
1013 | d=(unsigned char *)s->init_buf->data; | |
1014 | p= &(d[4]); | |
1015 | ||
1016 | for (i=0; r[i] != NULL; i++) | |
1017 | { | |
1018 | s2n(nr[i],p); | |
1019 | BN_bn2bin(r[i],p); | |
1020 | p+=nr[i]; | |
1021 | } | |
1022 | ||
1023 | /* not anonymous */ | |
1024 | if (pkey != NULL) | |
1025 | { | |
1026 | /* n is the length of the params, they start at &(d[4]) | |
1027 | * and p points to the space at the end. */ | |
1028 | #ifndef NO_RSA | |
1029 | if (pkey->type == EVP_PKEY_RSA) | |
1030 | { | |
1031 | q=md_buf; | |
1032 | j=0; | |
1033 | for (num=2; num > 0; num--) | |
1034 | { | |
58964a49 RE |
1035 | EVP_DigestInit(&md_ctx,(num == 2) |
1036 | ?s->ctx->md5:s->ctx->sha1); | |
d02b48c6 RE |
1037 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1038 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1039 | EVP_DigestUpdate(&md_ctx,&(d[4]),n); | |
1040 | EVP_DigestFinal(&md_ctx,q, | |
1041 | (unsigned int *)&i); | |
1042 | q+=i; | |
1043 | j+=i; | |
1044 | } | |
1045 | i=RSA_private_encrypt(j,md_buf,&(p[2]), | |
1046 | pkey->pkey.rsa,RSA_PKCS1_PADDING); | |
1047 | if (i <= 0) | |
1048 | { | |
1049 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_RSA); | |
1050 | goto err; | |
1051 | } | |
1052 | s2n(i,p); | |
1053 | n+=i+2; | |
1054 | } | |
1055 | else | |
1056 | #endif | |
1057 | #if !defined(NO_DSA) | |
1058 | if (pkey->type == EVP_PKEY_DSA) | |
1059 | { | |
1060 | /* lets do DSS */ | |
1061 | EVP_SignInit(&md_ctx,EVP_dss1()); | |
1062 | EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1063 | EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1064 | EVP_SignUpdate(&md_ctx,&(d[4]),n); | |
1065 | if (!EVP_SignFinal(&md_ctx,&(p[2]), | |
1066 | (unsigned int *)&i,pkey)) | |
1067 | { | |
1068 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_DSA); | |
1069 | goto err; | |
1070 | } | |
1071 | s2n(i,p); | |
1072 | n+=i+2; | |
1073 | } | |
1074 | else | |
1075 | #endif | |
1076 | { | |
1077 | /* Is this error check actually needed? */ | |
58964a49 | 1078 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
1079 | SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_PKEY_TYPE); |
1080 | goto f_err; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | *(d++)=SSL3_MT_SERVER_KEY_EXCHANGE; | |
1085 | l2n3(n,d); | |
1086 | ||
1087 | /* we should now have things packed up, so lets send | |
1088 | * it off */ | |
1089 | s->init_num=n+4; | |
1090 | s->init_off=0; | |
1091 | } | |
1092 | ||
1093 | /* SSL3_ST_SW_KEY_EXCH_B */ | |
1094 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
1095 | f_err: | |
1096 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1097 | err: | |
1098 | return(-1); | |
1099 | } | |
1100 | ||
1101 | static int ssl3_send_certificate_request(s) | |
1102 | SSL *s; | |
1103 | { | |
1104 | unsigned char *p,*d; | |
1105 | int i,j,nl,off,n; | |
1106 | STACK *sk=NULL; | |
1107 | X509_NAME *name; | |
1108 | BUF_MEM *buf; | |
1109 | ||
1110 | if (s->state == SSL3_ST_SW_CERT_REQ_A) | |
1111 | { | |
1112 | buf=s->init_buf; | |
1113 | ||
1114 | d=p=(unsigned char *)&(buf->data[4]); | |
1115 | ||
1116 | /* get the list of acceptable cert types */ | |
1117 | p++; | |
1118 | n=ssl3_get_req_cert_type(s,p); | |
1119 | d[0]=n; | |
1120 | p+=n; | |
1121 | n++; | |
1122 | ||
1123 | off=n; | |
1124 | p+=2; | |
1125 | n+=2; | |
1126 | ||
1127 | sk=SSL_get_client_CA_list(s); | |
1128 | nl=0; | |
1129 | if (sk != NULL) | |
1130 | { | |
1131 | for (i=0; i<sk_num(sk); i++) | |
1132 | { | |
1133 | name=(X509_NAME *)sk_value(sk,i); | |
1134 | j=i2d_X509_NAME(name,NULL); | |
1135 | if (!BUF_MEM_grow(buf,4+n+j+2)) | |
1136 | { | |
1137 | SSLerr(SSL_F_SSL3_SEND_CERTIFICATE_REQUEST,ERR_R_BUF_LIB); | |
1138 | goto err; | |
1139 | } | |
1140 | p=(unsigned char *)&(buf->data[4+n]); | |
58964a49 | 1141 | if (!(s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 RE |
1142 | { |
1143 | s2n(j,p); | |
1144 | i2d_X509_NAME(name,&p); | |
1145 | n+=2+j; | |
1146 | nl+=2+j; | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | d=p; | |
1151 | i2d_X509_NAME(name,&p); | |
1152 | j-=2; s2n(j,d); j+=2; | |
1153 | n+=j; | |
1154 | nl+=j; | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | /* else no CA names */ | |
1159 | p=(unsigned char *)&(buf->data[4+off]); | |
1160 | s2n(nl,p); | |
1161 | ||
1162 | d=(unsigned char *)buf->data; | |
1163 | *(d++)=SSL3_MT_CERTIFICATE_REQUEST; | |
1164 | l2n3(n,d); | |
1165 | ||
1166 | /* we should now have things packed up, so lets send | |
1167 | * it off */ | |
1168 | ||
1169 | s->init_num=n+4; | |
1170 | s->init_off=0; | |
1171 | } | |
1172 | ||
1173 | /* SSL3_ST_SW_CERT_REQ_B */ | |
1174 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
1175 | err: | |
1176 | return(-1); | |
1177 | } | |
1178 | ||
1179 | static int ssl3_get_client_key_exchange(s) | |
1180 | SSL *s; | |
1181 | { | |
1182 | int i,al,ok; | |
1183 | long n; | |
1184 | unsigned long l; | |
1185 | unsigned char *p; | |
1186 | RSA *rsa=NULL; | |
d02b48c6 | 1187 | EVP_PKEY *pkey=NULL; |
58964a49 RE |
1188 | #ifndef NO_DH |
1189 | BIGNUM *pub=NULL; | |
d02b48c6 | 1190 | DH *dh_srvr; |
58964a49 | 1191 | #endif |
d02b48c6 RE |
1192 | |
1193 | n=ssl3_get_message(s, | |
1194 | SSL3_ST_SR_KEY_EXCH_A, | |
1195 | SSL3_ST_SR_KEY_EXCH_B, | |
1196 | SSL3_MT_CLIENT_KEY_EXCHANGE, | |
1197 | 400, /* ???? */ | |
1198 | &ok); | |
1199 | ||
1200 | if (!ok) return((int)n); | |
1201 | p=(unsigned char *)s->init_buf->data; | |
1202 | ||
1203 | l=s->s3->tmp.new_cipher->algorithms; | |
1204 | ||
1205 | #ifndef NO_RSA | |
1206 | if (l & SSL_kRSA) | |
1207 | { | |
1208 | /* FIX THIS UP EAY EAY EAY EAY */ | |
1209 | if (s->s3->tmp.use_rsa_tmp) | |
1210 | { | |
1211 | if ((s->session->cert != NULL) && | |
1212 | (s->session->cert->rsa_tmp != NULL)) | |
1213 | rsa=s->session->cert->rsa_tmp; | |
1214 | else if ((s->ctx->default_cert != NULL) && | |
1215 | (s->ctx->default_cert->rsa_tmp != NULL)) | |
1216 | rsa=s->ctx->default_cert->rsa_tmp; | |
1217 | /* Don't do a callback because rsa_tmp should | |
1218 | * be sent already */ | |
1219 | if (rsa == NULL) | |
1220 | { | |
58964a49 | 1221 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
1222 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_TMP_RSA_PKEY); |
1223 | goto f_err; | |
1224 | ||
1225 | } | |
1226 | } | |
1227 | else | |
1228 | { | |
1229 | pkey=s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey; | |
1230 | if ( (pkey == NULL) || | |
1231 | (pkey->type != EVP_PKEY_RSA) || | |
1232 | (pkey->pkey.rsa == NULL)) | |
1233 | { | |
58964a49 | 1234 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
1235 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_RSA_CERTIFICATE); |
1236 | goto f_err; | |
1237 | } | |
1238 | rsa=pkey->pkey.rsa; | |
1239 | } | |
1240 | ||
58964a49 RE |
1241 | /* TLS */ |
1242 | if (s->version > SSL3_VERSION) | |
1243 | { | |
1244 | n2s(p,i); | |
1245 | if (n != i+2) | |
1246 | { | |
1247 | if (!(s->options & SSL_OP_TLS_D5_BUG)) | |
1248 | { | |
1249 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG); | |
1250 | goto err; | |
1251 | } | |
1252 | else | |
1253 | p-=2; | |
1254 | } | |
1255 | else | |
1256 | n=i; | |
1257 | } | |
1258 | ||
d02b48c6 | 1259 | i=RSA_private_decrypt((int)n,p,p,rsa,RSA_PKCS1_PADDING); |
58964a49 | 1260 | |
d02b48c6 | 1261 | #if 1 |
dfeab068 | 1262 | /* If a bad decrypt, use a random master key */ |
d02b48c6 | 1263 | if ((i != SSL_MAX_MASTER_KEY_LENGTH) || |
58964a49 RE |
1264 | ((p[0] != (s->version>>8)) || |
1265 | (p[1] != (s->version & 0xff)))) | |
d02b48c6 | 1266 | { |
58964a49 RE |
1267 | p[0]=(s->version>>8); |
1268 | p[1]=(s->version & 0xff); | |
d02b48c6 RE |
1269 | RAND_bytes(&(p[2]),SSL_MAX_MASTER_KEY_LENGTH-2); |
1270 | i=SSL_MAX_MASTER_KEY_LENGTH; | |
1271 | } | |
1272 | #else | |
1273 | if (i != SSL_MAX_MASTER_KEY_LENGTH) | |
1274 | { | |
1275 | al=SSL_AD_DECODE_ERROR; | |
1276 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); | |
1277 | goto f_err; | |
1278 | } | |
1279 | ||
1280 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version & 0xff))) | |
1281 | { | |
1282 | al=SSL_AD_DECODE_ERROR; | |
1283 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_PROTOCOL_VERSION_NUMBER); | |
1284 | goto f_err; | |
1285 | } | |
1286 | #endif | |
1287 | ||
1288 | s->session->master_key_length= | |
58964a49 | 1289 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1290 | s->session->master_key, |
1291 | p,i); | |
1292 | memset(p,0,i); | |
1293 | } | |
1294 | else | |
1295 | #endif | |
1296 | #ifndef NO_DH | |
1297 | if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) | |
1298 | { | |
d02b48c6 RE |
1299 | n2s(p,i); |
1300 | if (n != i+2) | |
1301 | { | |
58964a49 | 1302 | if (!(s->options & SSL_OP_SSLEAY_080_CLIENT_DH_BUG)) |
d02b48c6 RE |
1303 | { |
1304 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG); | |
1305 | goto err; | |
1306 | } | |
1307 | else | |
1308 | { | |
1309 | p-=2; | |
1310 | i=(int)n; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | if (n == 0L) /* the parameters are in the cert */ | |
1315 | { | |
58964a49 | 1316 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
1317 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_DECODE_DH_CERTS); |
1318 | goto f_err; | |
1319 | } | |
1320 | else | |
1321 | { | |
1322 | if (s->s3->tmp.dh == NULL) | |
1323 | { | |
58964a49 | 1324 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
1325 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY); |
1326 | goto f_err; | |
1327 | } | |
1328 | else | |
1329 | dh_srvr=s->s3->tmp.dh; | |
1330 | } | |
1331 | ||
1332 | pub=BN_bin2bn(p,i,NULL); | |
1333 | if (pub == NULL) | |
1334 | { | |
1335 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BN_LIB); | |
1336 | goto err; | |
1337 | } | |
58964a49 | 1338 | |
d02b48c6 RE |
1339 | i=DH_compute_key(p,pub,dh_srvr); |
1340 | ||
1341 | if (i <= 0) | |
1342 | { | |
1343 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1344 | goto err; | |
1345 | } | |
1346 | ||
1347 | DH_free(s->s3->tmp.dh); | |
1348 | s->s3->tmp.dh=NULL; | |
1349 | ||
1350 | BN_clear_free(pub); | |
1351 | pub=NULL; | |
1352 | s->session->master_key_length= | |
58964a49 | 1353 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1354 | s->session->master_key,p,i); |
1355 | } | |
1356 | else | |
1357 | #endif | |
1358 | { | |
58964a49 | 1359 | al=SSL_AD_HANDSHAKE_FAILURE; |
d02b48c6 RE |
1360 | SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_UNKNOWN_CIPHER_TYPE); |
1361 | goto f_err; | |
1362 | } | |
1363 | ||
1364 | return(1); | |
1365 | f_err: | |
1366 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
58964a49 | 1367 | #if !defined(NO_DH) || !defined(NO_RSA) |
d02b48c6 | 1368 | err: |
58964a49 | 1369 | #endif |
d02b48c6 RE |
1370 | return(-1); |
1371 | } | |
1372 | ||
1373 | static int ssl3_get_cert_verify(s) | |
1374 | SSL *s; | |
1375 | { | |
1376 | EVP_PKEY *pkey=NULL; | |
1377 | unsigned char *p; | |
1378 | int al,ok,ret=0; | |
1379 | long n; | |
1380 | int type=0,i,j; | |
1381 | X509 *peer; | |
1382 | ||
1383 | n=ssl3_get_message(s, | |
1384 | SSL3_ST_SR_CERT_VRFY_A, | |
1385 | SSL3_ST_SR_CERT_VRFY_B, | |
1386 | -1, | |
1387 | 512, /* 512? */ | |
1388 | &ok); | |
1389 | ||
1390 | if (!ok) return((int)n); | |
1391 | ||
1392 | if (s->session->peer != NULL) | |
1393 | { | |
1394 | peer=s->session->peer; | |
1395 | pkey=X509_get_pubkey(peer); | |
1396 | type=X509_certificate_type(peer,pkey); | |
1397 | } | |
1398 | else | |
1399 | { | |
1400 | peer=NULL; | |
1401 | pkey=NULL; | |
1402 | } | |
1403 | ||
1404 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_VERIFY) | |
1405 | { | |
1406 | s->s3->tmp.reuse_message=1; | |
1407 | if ((peer != NULL) && (type | EVP_PKT_SIGN)) | |
1408 | { | |
58964a49 | 1409 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 | 1410 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_MISSING_VERIFY_MESSAGE); |
d02b48c6 RE |
1411 | goto f_err; |
1412 | } | |
1413 | ret=1; | |
1414 | goto end; | |
1415 | } | |
1416 | ||
1417 | if (peer == NULL) | |
1418 | { | |
1419 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_NO_CLIENT_CERT_RECEIVED); | |
58964a49 | 1420 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
1421 | goto f_err; |
1422 | } | |
1423 | ||
1424 | if (!(type & EVP_PKT_SIGN)) | |
1425 | { | |
1426 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE); | |
58964a49 | 1427 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1428 | goto f_err; |
1429 | } | |
1430 | ||
1431 | if (s->s3->change_cipher_spec) | |
1432 | { | |
1433 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_CCS_RECEIVED_EARLY); | |
58964a49 | 1434 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
1435 | goto f_err; |
1436 | } | |
1437 | ||
1438 | /* we now have a signature that we need to verify */ | |
1439 | p=(unsigned char *)s->init_buf->data; | |
1440 | n2s(p,i); | |
1441 | n-=2; | |
1442 | if (i > n) | |
1443 | { | |
1444 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_LENGTH_MISMATCH); | |
58964a49 | 1445 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1446 | goto f_err; |
1447 | } | |
1448 | ||
1449 | j=EVP_PKEY_size(pkey); | |
1450 | if ((i > j) || (n > j) || (n <= 0)) | |
1451 | { | |
1452 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_WRONG_SIGNATURE_SIZE); | |
58964a49 | 1453 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1454 | goto f_err; |
1455 | } | |
1456 | ||
1457 | #ifndef NO_RSA | |
1458 | if (pkey->type == EVP_PKEY_RSA) | |
1459 | { | |
1460 | i=RSA_public_decrypt(i,p,p,pkey->pkey.rsa,RSA_PKCS1_PADDING); | |
1461 | if (i < 0) | |
1462 | { | |
58964a49 | 1463 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1464 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_DECRYPT); |
1465 | goto f_err; | |
1466 | } | |
1467 | if ((i != (MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH)) || | |
58964a49 RE |
1468 | memcmp(&(s->s3->tmp.finish_md[0]),p, |
1469 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH)) | |
d02b48c6 | 1470 | { |
58964a49 | 1471 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1472 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_SIGNATURE); |
1473 | goto f_err; | |
1474 | } | |
1475 | } | |
1476 | else | |
1477 | #endif | |
1478 | #ifndef NO_DSA | |
1479 | if (pkey->type == EVP_PKEY_DSA) | |
1480 | { | |
58964a49 RE |
1481 | j=DSA_verify(pkey->save_type, |
1482 | &(s->s3->tmp.finish_md[MD5_DIGEST_LENGTH]), | |
d02b48c6 RE |
1483 | SHA_DIGEST_LENGTH,p,i,pkey->pkey.dsa); |
1484 | if (j <= 0) | |
1485 | { | |
1486 | /* bad signature */ | |
58964a49 | 1487 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1488 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_DSA_SIGNATURE); |
1489 | goto f_err; | |
1490 | } | |
1491 | } | |
1492 | else | |
1493 | #endif | |
1494 | { | |
1495 | SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_INTERNAL_ERROR); | |
58964a49 | 1496 | al=SSL_AD_UNSUPPORTED_CERTIFICATE; |
d02b48c6 RE |
1497 | goto f_err; |
1498 | } | |
1499 | ||
1500 | ||
1501 | ret=1; | |
1502 | if (0) | |
1503 | { | |
1504 | f_err: | |
1505 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1506 | } | |
1507 | end: | |
1508 | return(ret); | |
1509 | } | |
1510 | ||
1511 | static int ssl3_get_client_certificate(s) | |
1512 | SSL *s; | |
1513 | { | |
1514 | int i,ok,al,ret= -1; | |
1515 | X509 *x=NULL; | |
1516 | unsigned long l,nc,llen,n; | |
1517 | unsigned char *p,*d,*q; | |
1518 | STACK *sk=NULL; | |
1519 | ||
1520 | n=ssl3_get_message(s, | |
1521 | SSL3_ST_SR_CERT_A, | |
1522 | SSL3_ST_SR_CERT_B, | |
1523 | -1, | |
1524 | #if defined(MSDOS) && !defined(WIN32) | |
1525 | 1024*30, /* 30k max cert list :-) */ | |
1526 | #else | |
1527 | 1024*100, /* 100k max cert list :-) */ | |
1528 | #endif | |
1529 | &ok); | |
1530 | ||
1531 | if (!ok) return((int)n); | |
1532 | ||
1533 | if (s->s3->tmp.message_type == SSL3_MT_CLIENT_KEY_EXCHANGE) | |
1534 | { | |
1535 | if ( (s->verify_mode & SSL_VERIFY_PEER) && | |
1536 | (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) | |
1537 | { | |
1538 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE); | |
58964a49 RE |
1539 | al=SSL_AD_HANDSHAKE_FAILURE; |
1540 | goto f_err; | |
1541 | } | |
1542 | /* If tls asked for a client cert we must return a 0 list */ | |
1543 | if ((s->version > SSL3_VERSION) && s->s3->tmp.cert_request) | |
1544 | { | |
1545 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST); | |
1546 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
d02b48c6 RE |
1547 | goto f_err; |
1548 | } | |
1549 | s->s3->tmp.reuse_message=1; | |
1550 | return(1); | |
1551 | } | |
1552 | ||
1553 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
1554 | { | |
58964a49 | 1555 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
1556 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_WRONG_MESSAGE_TYPE); |
1557 | goto f_err; | |
1558 | } | |
1559 | d=p=(unsigned char *)s->init_buf->data; | |
1560 | ||
1561 | if ((sk=sk_new_null()) == NULL) | |
1562 | { | |
1563 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1564 | goto err; | |
1565 | } | |
1566 | ||
1567 | n2l3(p,llen); | |
1568 | if (llen+3 != n) | |
1569 | { | |
58964a49 | 1570 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1571 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
1572 | goto f_err; | |
1573 | } | |
1574 | for (nc=0; nc<llen; ) | |
1575 | { | |
1576 | n2l3(p,l); | |
1577 | if ((l+nc+3) > llen) | |
1578 | { | |
58964a49 | 1579 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1580 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1581 | goto f_err; | |
1582 | } | |
1583 | ||
1584 | q=p; | |
1585 | x=d2i_X509(NULL,&p,l); | |
1586 | if (x == NULL) | |
1587 | { | |
1588 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_ASN1_LIB); | |
1589 | goto err; | |
1590 | } | |
1591 | if (p != (q+l)) | |
1592 | { | |
58964a49 | 1593 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1594 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1595 | goto f_err; | |
1596 | } | |
1597 | if (!sk_push(sk,(char *)x)) | |
1598 | { | |
1599 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1600 | goto err; | |
1601 | } | |
1602 | x=NULL; | |
1603 | nc+=l+3; | |
1604 | } | |
1605 | ||
1606 | if (sk_num(sk) <= 0) | |
1607 | { | |
58964a49 RE |
1608 | /* TLS does not mind 0 certs returned */ |
1609 | if (s->version == SSL3_VERSION) | |
1610 | { | |
1611 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1612 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_NO_CERTIFICATES_RETURNED); | |
1613 | goto f_err; | |
1614 | } | |
1615 | /* Fail for TLS only if we required a certificate */ | |
1616 | else if ((s->verify_mode & SSL_VERIFY_PEER) && | |
1617 | (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) | |
1618 | { | |
1619 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE); | |
1620 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1621 | goto f_err; | |
1622 | } | |
d02b48c6 | 1623 | } |
58964a49 | 1624 | else |
d02b48c6 | 1625 | { |
58964a49 RE |
1626 | i=ssl_verify_cert_chain(s,sk); |
1627 | if (!i) | |
1628 | { | |
1629 | al=ssl_verify_alarm_type(s->verify_result); | |
1630 | SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_NO_CERTIFICATE_RETURNED); | |
1631 | goto f_err; | |
1632 | } | |
d02b48c6 RE |
1633 | } |
1634 | ||
1635 | /* This should not be needed */ | |
1636 | if (s->session->peer != NULL) | |
1637 | X509_free(s->session->peer); | |
d02b48c6 RE |
1638 | s->session->peer=(X509 *)sk_shift(sk); |
1639 | ||
1640 | ret=1; | |
1641 | if (0) | |
1642 | { | |
1643 | f_err: | |
1644 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1645 | } | |
1646 | err: | |
1647 | if (x != NULL) X509_free(x); | |
1648 | if (sk != NULL) sk_pop_free(sk,X509_free); | |
1649 | return(ret); | |
1650 | } | |
1651 | ||
1652 | int ssl3_send_server_certificate(s) | |
1653 | SSL *s; | |
1654 | { | |
1655 | unsigned long l; | |
1656 | X509 *x; | |
1657 | ||
1658 | if (s->state == SSL3_ST_SW_CERT_A) | |
1659 | { | |
1660 | x=ssl_get_server_send_cert(s); | |
1661 | if (x == NULL) | |
1662 | { | |
1663 | SSLerr(SSL_F_SSL3_SEND_SERVER_CERTIFICATE,SSL_R_INTERNAL_ERROR); | |
1664 | return(0); | |
1665 | } | |
1666 | ||
1667 | l=ssl3_output_cert_chain(s,x); | |
1668 | s->state=SSL3_ST_SW_CERT_B; | |
1669 | s->init_num=(int)l; | |
1670 | s->init_off=0; | |
1671 | } | |
1672 | ||
1673 | /* SSL3_ST_SW_CERT_B */ | |
1674 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
1675 | } |