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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 | */ | |
58 | ||
59 | #include <stdio.h> | |
ec577822 BM |
60 | #include <openssl/buffer.h> |
61 | #include <openssl/rand.h> | |
62 | #include <openssl/objects.h> | |
d02f751c UM |
63 | #include <openssl/md5.h> |
64 | #include <openssl/sha.h> | |
ec577822 | 65 | #include <openssl/evp.h> |
d02b48c6 RE |
66 | #include "ssl_locl.h" |
67 | ||
9b3086fe | 68 | static SSL_METHOD *ssl3_get_client_method(int ver); |
d02b48c6 RE |
69 | static int ssl3_client_hello(SSL *s); |
70 | static int ssl3_get_server_hello(SSL *s); | |
71 | static int ssl3_get_certificate_request(SSL *s); | |
72 | static int ca_dn_cmp(X509_NAME **a,X509_NAME **b); | |
73 | static int ssl3_get_server_done(SSL *s); | |
74 | static int ssl3_send_client_verify(SSL *s); | |
75 | static int ssl3_send_client_certificate(SSL *s); | |
76 | static int ssl3_send_client_key_exchange(SSL *s); | |
77 | static int ssl3_get_key_exchange(SSL *s); | |
78 | static int ssl3_get_server_certificate(SSL *s); | |
79 | static int ssl3_check_cert_and_algorithm(SSL *s); | |
6b691a5c | 80 | static SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 81 | { |
58964a49 | 82 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
83 | return(SSLv3_client_method()); |
84 | else | |
85 | return(NULL); | |
86 | } | |
87 | ||
6b691a5c | 88 | SSL_METHOD *SSLv3_client_method(void) |
d02b48c6 RE |
89 | { |
90 | static int init=1; | |
91 | static SSL_METHOD SSLv3_client_data; | |
92 | ||
93 | if (init) | |
94 | { | |
95 | init=0; | |
96 | memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(), | |
97 | sizeof(SSL_METHOD)); | |
98 | SSLv3_client_data.ssl_connect=ssl3_connect; | |
99 | SSLv3_client_data.get_ssl_method=ssl3_get_client_method; | |
100 | } | |
101 | return(&SSLv3_client_data); | |
102 | } | |
103 | ||
6b691a5c | 104 | int ssl3_connect(SSL *s) |
d02b48c6 RE |
105 | { |
106 | BUF_MEM *buf; | |
107 | unsigned long Time=time(NULL),l; | |
108 | long num1; | |
109 | void (*cb)()=NULL; | |
110 | int ret= -1; | |
d02b48c6 RE |
111 | int new_state,state,skip=0;; |
112 | ||
eb952088 | 113 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 114 | ERR_clear_error(); |
58964a49 | 115 | clear_sys_error(); |
d02b48c6 RE |
116 | |
117 | if (s->info_callback != NULL) | |
118 | cb=s->info_callback; | |
119 | else if (s->ctx->info_callback != NULL) | |
120 | cb=s->ctx->info_callback; | |
121 | ||
122 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); | |
123 | s->in_handshake++; | |
124 | ||
125 | for (;;) | |
126 | { | |
127 | state=s->state; | |
128 | ||
129 | switch(s->state) | |
130 | { | |
131 | case SSL_ST_RENEGOTIATE: | |
132 | s->new_session=1; | |
133 | s->state=SSL_ST_CONNECT; | |
413c4f45 | 134 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
135 | /* break */ |
136 | case SSL_ST_BEFORE: | |
137 | case SSL_ST_CONNECT: | |
138 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
139 | case SSL_ST_OK|SSL_ST_CONNECT: | |
140 | ||
413c4f45 | 141 | s->server=0; |
d02b48c6 RE |
142 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
143 | ||
58964a49 RE |
144 | if ((s->version & 0xff00 ) != 0x0300) |
145 | abort(); | |
146 | /* s->version=SSL3_VERSION; */ | |
d02b48c6 RE |
147 | s->type=SSL_ST_CONNECT; |
148 | ||
149 | if (s->init_buf == NULL) | |
150 | { | |
151 | if ((buf=BUF_MEM_new()) == NULL) | |
152 | { | |
153 | ret= -1; | |
154 | goto end; | |
155 | } | |
156 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
157 | { | |
158 | ret= -1; | |
159 | goto end; | |
160 | } | |
161 | s->init_buf=buf; | |
162 | } | |
163 | ||
164 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
165 | ||
166 | /* setup buffing BIO */ | |
58964a49 | 167 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
168 | |
169 | /* don't push the buffering BIO quite yet */ | |
170 | ||
171 | ssl3_init_finished_mac(s); | |
172 | ||
173 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 174 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
175 | s->init_num=0; |
176 | break; | |
177 | ||
178 | case SSL3_ST_CW_CLNT_HELLO_A: | |
179 | case SSL3_ST_CW_CLNT_HELLO_B: | |
180 | ||
181 | s->shutdown=0; | |
182 | ret=ssl3_client_hello(s); | |
183 | if (ret <= 0) goto end; | |
184 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
185 | s->init_num=0; | |
186 | ||
187 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
188 | if (s->bbio != s->wbio) |
189 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
190 | |
191 | break; | |
192 | ||
193 | case SSL3_ST_CR_SRVR_HELLO_A: | |
194 | case SSL3_ST_CR_SRVR_HELLO_B: | |
195 | ret=ssl3_get_server_hello(s); | |
196 | if (ret <= 0) goto end; | |
197 | if (s->hit) | |
198 | s->state=SSL3_ST_CR_FINISHED_A; | |
199 | else | |
200 | s->state=SSL3_ST_CR_CERT_A; | |
201 | s->init_num=0; | |
202 | break; | |
203 | ||
204 | case SSL3_ST_CR_CERT_A: | |
205 | case SSL3_ST_CR_CERT_B: | |
206 | /* Check if it is anon DH */ | |
207 | if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) | |
208 | { | |
209 | ret=ssl3_get_server_certificate(s); | |
210 | if (ret <= 0) goto end; | |
211 | } | |
212 | else | |
213 | skip=1; | |
214 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
215 | s->init_num=0; | |
216 | break; | |
217 | ||
218 | case SSL3_ST_CR_KEY_EXCH_A: | |
219 | case SSL3_ST_CR_KEY_EXCH_B: | |
220 | ret=ssl3_get_key_exchange(s); | |
221 | if (ret <= 0) goto end; | |
222 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
223 | s->init_num=0; | |
224 | ||
225 | /* at this point we check that we have the | |
226 | * required stuff from the server */ | |
227 | if (!ssl3_check_cert_and_algorithm(s)) | |
228 | { | |
229 | ret= -1; | |
230 | goto end; | |
231 | } | |
232 | break; | |
233 | ||
234 | case SSL3_ST_CR_CERT_REQ_A: | |
235 | case SSL3_ST_CR_CERT_REQ_B: | |
236 | ret=ssl3_get_certificate_request(s); | |
237 | if (ret <= 0) goto end; | |
238 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
239 | s->init_num=0; | |
240 | break; | |
241 | ||
242 | case SSL3_ST_CR_SRVR_DONE_A: | |
243 | case SSL3_ST_CR_SRVR_DONE_B: | |
244 | ret=ssl3_get_server_done(s); | |
245 | if (ret <= 0) goto end; | |
246 | if (s->s3->tmp.cert_req) | |
247 | s->state=SSL3_ST_CW_CERT_A; | |
248 | else | |
249 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
250 | s->init_num=0; | |
251 | ||
252 | break; | |
253 | ||
254 | case SSL3_ST_CW_CERT_A: | |
255 | case SSL3_ST_CW_CERT_B: | |
256 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 257 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
258 | ret=ssl3_send_client_certificate(s); |
259 | if (ret <= 0) goto end; | |
260 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
261 | s->init_num=0; | |
262 | break; | |
263 | ||
264 | case SSL3_ST_CW_KEY_EXCH_A: | |
265 | case SSL3_ST_CW_KEY_EXCH_B: | |
266 | ret=ssl3_send_client_key_exchange(s); | |
267 | if (ret <= 0) goto end; | |
268 | l=s->s3->tmp.new_cipher->algorithms; | |
269 | /* EAY EAY EAY need to check for DH fix cert | |
270 | * sent back */ | |
58964a49 RE |
271 | /* For TLS, cert_req is set to 2, so a cert chain |
272 | * of nothing is sent, but no verify packet is sent */ | |
273 | if (s->s3->tmp.cert_req == 1) | |
d02b48c6 RE |
274 | { |
275 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
276 | } | |
277 | else | |
278 | { | |
279 | s->state=SSL3_ST_CW_CHANGE_A; | |
280 | s->s3->change_cipher_spec=0; | |
281 | } | |
282 | ||
283 | s->init_num=0; | |
284 | break; | |
285 | ||
286 | case SSL3_ST_CW_CERT_VRFY_A: | |
287 | case SSL3_ST_CW_CERT_VRFY_B: | |
288 | ret=ssl3_send_client_verify(s); | |
289 | if (ret <= 0) goto end; | |
290 | s->state=SSL3_ST_CW_CHANGE_A; | |
291 | s->init_num=0; | |
292 | s->s3->change_cipher_spec=0; | |
293 | break; | |
294 | ||
295 | case SSL3_ST_CW_CHANGE_A: | |
296 | case SSL3_ST_CW_CHANGE_B: | |
297 | ret=ssl3_send_change_cipher_spec(s, | |
298 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
299 | if (ret <= 0) goto end; | |
300 | s->state=SSL3_ST_CW_FINISHED_A; | |
301 | s->init_num=0; | |
302 | ||
303 | s->session->cipher=s->s3->tmp.new_cipher; | |
413c4f45 MC |
304 | if (s->s3->tmp.new_compression == NULL) |
305 | s->session->compress_meth=0; | |
306 | else | |
307 | s->session->compress_meth= | |
308 | s->s3->tmp.new_compression->id; | |
58964a49 | 309 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
310 | { |
311 | ret= -1; | |
312 | goto end; | |
313 | } | |
314 | ||
58964a49 | 315 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
316 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
317 | { | |
318 | ret= -1; | |
319 | goto end; | |
320 | } | |
321 | ||
322 | break; | |
323 | ||
324 | case SSL3_ST_CW_FINISHED_A: | |
325 | case SSL3_ST_CW_FINISHED_B: | |
326 | ret=ssl3_send_finished(s, | |
327 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
328 | s->method->ssl3_enc->client_finished_label, |
329 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
330 | if (ret <= 0) goto end; |
331 | s->state=SSL3_ST_CW_FLUSH; | |
332 | ||
333 | /* clear flags */ | |
334 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
335 | if (s->hit) | |
336 | { | |
337 | s->s3->tmp.next_state=SSL_ST_OK; | |
338 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
339 | { | |
340 | s->state=SSL_ST_OK; | |
341 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
342 | s->s3->delay_buf_pop_ret=0; | |
343 | } | |
344 | } | |
345 | else | |
346 | { | |
347 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; | |
348 | } | |
349 | s->init_num=0; | |
350 | break; | |
351 | ||
352 | case SSL3_ST_CR_FINISHED_A: | |
353 | case SSL3_ST_CR_FINISHED_B: | |
354 | ||
355 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, | |
58964a49 | 356 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
357 | if (ret <= 0) goto end; |
358 | ||
359 | if (s->hit) | |
360 | s->state=SSL3_ST_CW_CHANGE_A; | |
361 | else | |
362 | s->state=SSL_ST_OK; | |
363 | s->init_num=0; | |
364 | break; | |
365 | ||
366 | case SSL3_ST_CW_FLUSH: | |
367 | /* number of bytes to be flushed */ | |
368 | num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); | |
369 | if (num1 > 0) | |
370 | { | |
371 | s->rwstate=SSL_WRITING; | |
372 | num1=BIO_flush(s->wbio); | |
373 | if (num1 <= 0) { ret= -1; goto end; } | |
374 | s->rwstate=SSL_NOTHING; | |
375 | } | |
376 | ||
377 | s->state=s->s3->tmp.next_state; | |
378 | break; | |
379 | ||
380 | case SSL_ST_OK: | |
381 | /* clean a few things up */ | |
382 | ssl3_cleanup_key_block(s); | |
383 | ||
413c4f45 | 384 | if (s->init_buf != NULL) |
d02b48c6 | 385 | { |
413c4f45 MC |
386 | BUF_MEM_free(s->init_buf); |
387 | s->init_buf=NULL; | |
d02b48c6 | 388 | } |
413c4f45 MC |
389 | |
390 | /* If we are not 'joining' the last two packets, | |
391 | * remove the buffering now */ | |
392 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
393 | ssl_free_wbio_buffer(s); | |
394 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
395 | |
396 | s->init_num=0; | |
397 | s->new_session=0; | |
398 | ||
399 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 400 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
401 | |
402 | ret=1; | |
403 | /* s->server=0; */ | |
404 | s->handshake_func=ssl3_connect; | |
413c4f45 | 405 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
406 | |
407 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
408 | ||
409 | goto end; | |
dfeab068 | 410 | /* break; */ |
d02b48c6 RE |
411 | |
412 | default: | |
413 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
414 | ret= -1; | |
415 | goto end; | |
416 | /* break; */ | |
417 | } | |
418 | ||
419 | /* did we do anything */ | |
420 | if (!s->s3->tmp.reuse_message && !skip) | |
421 | { | |
58964a49 RE |
422 | if (s->debug) |
423 | { | |
424 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
425 | goto end; | |
426 | } | |
d02b48c6 RE |
427 | |
428 | if ((cb != NULL) && (s->state != state)) | |
429 | { | |
430 | new_state=s->state; | |
431 | s->state=state; | |
432 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
433 | s->state=new_state; | |
434 | } | |
435 | } | |
436 | skip=0; | |
437 | } | |
438 | end: | |
439 | if (cb != NULL) | |
440 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
441 | s->in_handshake--; | |
442 | return(ret); | |
443 | } | |
444 | ||
445 | ||
6b691a5c | 446 | static int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
447 | { |
448 | unsigned char *buf; | |
449 | unsigned char *p,*d; | |
413c4f45 | 450 | int i,j; |
d02b48c6 | 451 | unsigned long Time,l; |
413c4f45 | 452 | SSL_COMP *comp; |
d02b48c6 RE |
453 | |
454 | buf=(unsigned char *)s->init_buf->data; | |
455 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
456 | { | |
457 | if ((s->session == NULL) || | |
dfeab068 RE |
458 | (s->session->ssl_version != s->version) || |
459 | (s->session->not_resumable)) | |
d02b48c6 RE |
460 | { |
461 | if (!ssl_get_new_session(s,0)) | |
462 | goto err; | |
463 | } | |
464 | /* else use the pre-loaded session */ | |
465 | ||
466 | p=s->s3->client_random; | |
467 | Time=time(NULL); /* Time */ | |
468 | l2n(Time,p); | |
dfeab068 | 469 | RAND_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time)); |
d02b48c6 RE |
470 | |
471 | /* Do the message type and length last */ | |
472 | d=p= &(buf[4]); | |
473 | ||
58964a49 RE |
474 | *(p++)=s->version>>8; |
475 | *(p++)=s->version&0xff; | |
413c4f45 | 476 | s->client_version=s->version; |
d02b48c6 RE |
477 | |
478 | /* Random stuff */ | |
479 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
480 | p+=SSL3_RANDOM_SIZE; | |
481 | ||
482 | /* Session ID */ | |
483 | if (s->new_session) | |
484 | i=0; | |
485 | else | |
486 | i=s->session->session_id_length; | |
487 | *(p++)=i; | |
488 | if (i != 0) | |
489 | { | |
490 | memcpy(p,s->session->session_id,i); | |
491 | p+=i; | |
492 | } | |
493 | ||
494 | /* Ciphers supported */ | |
495 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2])); | |
496 | if (i == 0) | |
497 | { | |
498 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
499 | goto err; | |
500 | } | |
501 | s2n(i,p); | |
502 | p+=i; | |
503 | ||
dfeab068 | 504 | /* COMPRESSION */ |
413c4f45 MC |
505 | if (s->ctx->comp_methods == NULL) |
506 | j=0; | |
507 | else | |
f73e07cf | 508 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
509 | *(p++)=1+j; |
510 | for (i=0; i<j; i++) | |
511 | { | |
f73e07cf | 512 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
513 | *(p++)=comp->id; |
514 | } | |
515 | *(p++)=0; /* Add the NULL method */ | |
d02b48c6 RE |
516 | |
517 | l=(p-d); | |
518 | d=buf; | |
519 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
520 | l2n3(l,d); | |
521 | ||
522 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
523 | /* number of bytes to write */ | |
524 | s->init_num=p-buf; | |
525 | s->init_off=0; | |
526 | } | |
527 | ||
528 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
529 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
530 | err: | |
531 | return(-1); | |
532 | } | |
533 | ||
6b691a5c | 534 | static int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 535 | { |
f73e07cf | 536 | STACK_OF(SSL_CIPHER) *sk; |
d02b48c6 RE |
537 | SSL_CIPHER *c; |
538 | unsigned char *p,*d; | |
539 | int i,al,ok; | |
540 | unsigned int j; | |
541 | long n; | |
413c4f45 | 542 | SSL_COMP *comp; |
d02b48c6 RE |
543 | |
544 | n=ssl3_get_message(s, | |
545 | SSL3_ST_CR_SRVR_HELLO_A, | |
546 | SSL3_ST_CR_SRVR_HELLO_B, | |
547 | SSL3_MT_SERVER_HELLO, | |
548 | 300, /* ?? */ | |
549 | &ok); | |
550 | ||
551 | if (!ok) return((int)n); | |
552 | d=p=(unsigned char *)s->init_buf->data; | |
553 | ||
58964a49 | 554 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
555 | { |
556 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
557 | s->version=(s->version&0xff00)|p[1]; |
558 | al=SSL_AD_PROTOCOL_VERSION; | |
559 | goto f_err; | |
d02b48c6 RE |
560 | } |
561 | p+=2; | |
562 | ||
563 | /* load the server hello data */ | |
564 | /* load the server random */ | |
565 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
566 | p+=SSL3_RANDOM_SIZE; | |
567 | ||
568 | /* get the session-id */ | |
569 | j= *(p++); | |
570 | ||
571 | if ((j != 0) && (j != SSL3_SESSION_ID_SIZE)) | |
572 | { | |
573 | /* SSLref returns 16 :-( */ | |
574 | if (j < SSL2_SSL_SESSION_ID_LENGTH) | |
575 | { | |
58964a49 | 576 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
577 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT); |
578 | goto f_err; | |
579 | } | |
580 | } | |
b4cadc6e BL |
581 | if (j != 0 && j == s->session->session_id_length |
582 | && memcmp(p,s->session->session_id,j) == 0) | |
583 | { | |
584 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
585 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
586 | { | |
587 | al=SSL_AD_ILLEGAL_PARAMETER; | |
588 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
589 | goto f_err; | |
590 | } | |
591 | s->hit=1; | |
592 | } | |
58964a49 | 593 | else /* a miss or crap from the other end */ |
d02b48c6 | 594 | { |
58964a49 RE |
595 | /* If we were trying for session-id reuse, make a new |
596 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 597 | s->hit=0; |
58964a49 RE |
598 | if (s->session->session_id_length > 0) |
599 | { | |
600 | if (!ssl_get_new_session(s,0)) | |
601 | { | |
602 | al=SSL_AD_INTERNAL_ERROR; | |
603 | goto f_err; | |
604 | } | |
605 | } | |
606 | s->session->session_id_length=j; | |
607 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
608 | } |
609 | p+=j; | |
610 | c=ssl_get_cipher_by_char(s,p); | |
611 | if (c == NULL) | |
612 | { | |
613 | /* unknown cipher */ | |
58964a49 | 614 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
615 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
616 | goto f_err; | |
617 | } | |
618 | p+=ssl_put_cipher_by_char(s,NULL,NULL); | |
619 | ||
620 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 621 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
622 | if (i < 0) |
623 | { | |
624 | /* we did not say we would use this cipher */ | |
58964a49 | 625 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
626 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
627 | goto f_err; | |
628 | } | |
629 | ||
630 | if (s->hit && (s->session->cipher != c)) | |
631 | { | |
58964a49 | 632 | if (!(s->options & |
d02b48c6 RE |
633 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
634 | { | |
58964a49 | 635 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
636 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
637 | goto f_err; | |
638 | } | |
639 | } | |
640 | s->s3->tmp.new_cipher=c; | |
641 | ||
642 | /* lets get the compression algorithm */ | |
dfeab068 | 643 | /* COMPRESSION */ |
d02b48c6 | 644 | j= *(p++); |
413c4f45 MC |
645 | if (j == 0) |
646 | comp=NULL; | |
647 | else | |
648 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
649 | ||
650 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 651 | { |
58964a49 | 652 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
653 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
654 | goto f_err; | |
655 | } | |
413c4f45 MC |
656 | else |
657 | { | |
658 | s->s3->tmp.new_compression=comp; | |
659 | } | |
d02b48c6 RE |
660 | |
661 | if (p != (d+n)) | |
662 | { | |
663 | /* wrong packet length */ | |
58964a49 | 664 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
665 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
666 | goto err; | |
667 | } | |
668 | ||
669 | return(1); | |
670 | f_err: | |
671 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
672 | err: | |
673 | return(-1); | |
674 | } | |
675 | ||
6b691a5c | 676 | static int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
677 | { |
678 | int al,i,ok,ret= -1; | |
679 | unsigned long n,nc,llen,l; | |
680 | X509 *x=NULL; | |
681 | unsigned char *p,*d,*q; | |
f73e07cf | 682 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 683 | SESS_CERT *sc; |
d02b48c6 RE |
684 | EVP_PKEY *pkey=NULL; |
685 | ||
686 | n=ssl3_get_message(s, | |
687 | SSL3_ST_CR_CERT_A, | |
688 | SSL3_ST_CR_CERT_B, | |
689 | -1, | |
690 | #if defined(MSDOS) && !defined(WIN32) | |
691 | 1024*30, /* 30k max cert list :-) */ | |
692 | #else | |
693 | 1024*100, /* 100k max cert list :-) */ | |
694 | #endif | |
695 | &ok); | |
696 | ||
697 | if (!ok) return((int)n); | |
698 | ||
699 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) | |
700 | { | |
701 | s->s3->tmp.reuse_message=1; | |
702 | return(1); | |
703 | } | |
704 | ||
705 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
706 | { | |
58964a49 | 707 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
708 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
709 | goto f_err; | |
710 | } | |
711 | d=p=(unsigned char *)s->init_buf->data; | |
712 | ||
f73e07cf | 713 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
714 | { |
715 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
716 | goto err; | |
717 | } | |
718 | ||
719 | n2l3(p,llen); | |
720 | if (llen+3 != n) | |
721 | { | |
58964a49 | 722 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
723 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
724 | goto f_err; | |
725 | } | |
726 | for (nc=0; nc<llen; ) | |
727 | { | |
728 | n2l3(p,l); | |
729 | if ((l+nc+3) > llen) | |
730 | { | |
58964a49 | 731 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
732 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
733 | goto f_err; | |
734 | } | |
735 | ||
736 | q=p; | |
737 | x=d2i_X509(NULL,&q,l); | |
738 | if (x == NULL) | |
739 | { | |
58964a49 | 740 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
741 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
742 | goto f_err; | |
743 | } | |
744 | if (q != (p+l)) | |
745 | { | |
58964a49 | 746 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
747 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
748 | goto f_err; | |
749 | } | |
f73e07cf | 750 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
751 | { |
752 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
753 | goto err; | |
754 | } | |
755 | x=NULL; | |
756 | nc+=l+3; | |
757 | p=q; | |
758 | } | |
759 | ||
760 | i=ssl_verify_cert_chain(s,sk); | |
b1c4fe36 | 761 | if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)) |
d02b48c6 RE |
762 | { |
763 | al=ssl_verify_alarm_type(s->verify_result); | |
764 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
765 | goto f_err; | |
766 | } | |
767 | ||
b56bce4f BM |
768 | sc=ssl_sess_cert_new(); |
769 | if (sc == NULL) goto err; | |
d02b48c6 | 770 | |
b56bce4f BM |
771 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
772 | s->session->sess_cert=sc; | |
d02b48c6 | 773 | |
b56bce4f | 774 | sc->cert_chain=sk; |
f73e07cf | 775 | x=sk_X509_value(sk,0); |
d02b48c6 RE |
776 | sk=NULL; |
777 | ||
778 | pkey=X509_get_pubkey(x); | |
779 | ||
dfeab068 | 780 | if ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)) |
d02b48c6 RE |
781 | { |
782 | x=NULL; | |
783 | al=SSL3_AL_FATAL; | |
784 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
785 | goto f_err; | |
786 | } | |
787 | ||
788 | i=ssl_cert_type(x,pkey); | |
789 | if (i < 0) | |
790 | { | |
791 | x=NULL; | |
792 | al=SSL3_AL_FATAL; | |
793 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
794 | goto f_err; | |
795 | } | |
796 | ||
b56bce4f | 797 | sc->peer_cert_type=i; |
58964a49 | 798 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); |
b56bce4f BM |
799 | if (sc->peer_pkeys[i].x509 != NULL) /* Why would this ever happen? |
800 | * We just created sc a couple of | |
801 | * lines ago. */ | |
802 | X509_free(sc->peer_pkeys[i].x509); | |
803 | sc->peer_pkeys[i].x509=x; | |
804 | sc->peer_key= &(sc->peer_pkeys[i]); | |
805 | ||
806 | if (s->session->peer != NULL) | |
d02b48c6 | 807 | X509_free(s->session->peer); |
58964a49 | 808 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); |
d02b48c6 RE |
809 | s->session->peer=x; |
810 | ||
811 | x=NULL; | |
812 | ret=1; | |
813 | ||
814 | if (0) | |
815 | { | |
816 | f_err: | |
817 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
818 | } | |
819 | err: | |
a8236c8c DSH |
820 | EVP_PKEY_free(pkey); |
821 | X509_free(x); | |
f73e07cf | 822 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
823 | return(ret); |
824 | } | |
825 | ||
6b691a5c | 826 | static int ssl3_get_key_exchange(SSL *s) |
d02b48c6 RE |
827 | { |
828 | #ifndef NO_RSA | |
829 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; | |
830 | #endif | |
831 | EVP_MD_CTX md_ctx; | |
832 | unsigned char *param,*p; | |
833 | int al,i,j,param_len,ok; | |
834 | long n,alg; | |
835 | EVP_PKEY *pkey=NULL; | |
79df9d62 | 836 | #ifndef NO_RSA |
d02b48c6 | 837 | RSA *rsa=NULL; |
79df9d62 | 838 | #endif |
58964a49 | 839 | #ifndef NO_DH |
d02b48c6 | 840 | DH *dh=NULL; |
58964a49 | 841 | #endif |
d02b48c6 RE |
842 | |
843 | n=ssl3_get_message(s, | |
844 | SSL3_ST_CR_KEY_EXCH_A, | |
845 | SSL3_ST_CR_KEY_EXCH_B, | |
846 | -1, | |
847 | 1024*8, /* ?? */ | |
848 | &ok); | |
849 | ||
850 | if (!ok) return((int)n); | |
851 | ||
852 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
853 | { | |
854 | s->s3->tmp.reuse_message=1; | |
855 | return(1); | |
856 | } | |
857 | ||
858 | param=p=(unsigned char *)s->init_buf->data; | |
859 | ||
9d5cceac | 860 | if (s->session->sess_cert != NULL) |
d02b48c6 RE |
861 | { |
862 | #ifndef NO_RSA | |
b56bce4f | 863 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 864 | { |
b56bce4f BM |
865 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
866 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
867 | } |
868 | #endif | |
869 | #ifndef NO_DH | |
b56bce4f | 870 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 871 | { |
b56bce4f BM |
872 | DH_free(s->session->sess_cert->peer_dh_tmp); |
873 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 RE |
874 | } |
875 | #endif | |
876 | } | |
877 | else | |
878 | { | |
b56bce4f | 879 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
880 | } |
881 | ||
882 | param_len=0; | |
883 | alg=s->s3->tmp.new_cipher->algorithms; | |
884 | ||
885 | #ifndef NO_RSA | |
886 | if (alg & SSL_kRSA) | |
887 | { | |
888 | if ((rsa=RSA_new()) == NULL) | |
889 | { | |
890 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
891 | goto err; | |
892 | } | |
893 | n2s(p,i); | |
894 | param_len=i+2; | |
895 | if (param_len > n) | |
896 | { | |
58964a49 | 897 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
898 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
899 | goto f_err; | |
900 | } | |
901 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
902 | { | |
903 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
904 | goto err; | |
905 | } | |
906 | p+=i; | |
907 | ||
908 | n2s(p,i); | |
909 | param_len+=i+2; | |
910 | if (param_len > n) | |
911 | { | |
58964a49 | 912 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
913 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
914 | goto f_err; | |
915 | } | |
916 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
917 | { | |
918 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
919 | goto err; | |
920 | } | |
921 | p+=i; | |
922 | n-=param_len; | |
923 | ||
d02b48c6 RE |
924 | /* this should be because we are using an export cipher */ |
925 | if (alg & SSL_aRSA) | |
b56bce4f | 926 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
927 | else |
928 | { | |
929 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); | |
930 | goto err; | |
931 | } | |
b56bce4f | 932 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 933 | rsa=NULL; |
d02b48c6 RE |
934 | } |
935 | else | |
936 | #endif | |
937 | #ifndef NO_DH | |
938 | if (alg & SSL_kEDH) | |
939 | { | |
940 | if ((dh=DH_new()) == NULL) | |
941 | { | |
942 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
943 | goto err; | |
944 | } | |
945 | n2s(p,i); | |
946 | param_len=i+2; | |
947 | if (param_len > n) | |
948 | { | |
58964a49 | 949 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
950 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
951 | goto f_err; | |
952 | } | |
953 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
954 | { | |
955 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
956 | goto err; | |
957 | } | |
958 | p+=i; | |
959 | ||
960 | n2s(p,i); | |
961 | param_len+=i+2; | |
962 | if (param_len > n) | |
963 | { | |
58964a49 | 964 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
965 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
966 | goto f_err; | |
967 | } | |
968 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
969 | { | |
970 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
971 | goto err; | |
972 | } | |
973 | p+=i; | |
974 | ||
975 | n2s(p,i); | |
976 | param_len+=i+2; | |
977 | if (param_len > n) | |
978 | { | |
58964a49 | 979 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
980 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
981 | goto f_err; | |
982 | } | |
983 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
984 | { | |
985 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
986 | goto err; | |
987 | } | |
988 | p+=i; | |
989 | n-=param_len; | |
990 | ||
991 | #ifndef NO_RSA | |
992 | if (alg & SSL_aRSA) | |
b56bce4f | 993 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
994 | else |
995 | #endif | |
996 | #ifndef NO_DSA | |
997 | if (alg & SSL_aDSS) | |
b56bce4f | 998 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
999 | #endif |
1000 | /* else anonymous DH, so no certificate or pkey. */ | |
1001 | ||
b56bce4f | 1002 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1003 | dh=NULL; |
d02b48c6 RE |
1004 | } |
1005 | else if ((alg & SSL_kDHr) || (alg & SSL_kDHd)) | |
1006 | { | |
58964a49 | 1007 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1008 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1009 | goto f_err; | |
1010 | } | |
1011 | #endif | |
dfeab068 RE |
1012 | if (alg & SSL_aFZA) |
1013 | { | |
1014 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1015 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); | |
1016 | goto f_err; | |
1017 | } | |
1018 | ||
d02b48c6 RE |
1019 | |
1020 | /* p points to the next byte, there are 'n' bytes left */ | |
1021 | ||
1022 | ||
1023 | /* if it was signed, check the signature */ | |
1024 | if (pkey != NULL) | |
1025 | { | |
1026 | n2s(p,i); | |
1027 | n-=2; | |
1028 | j=EVP_PKEY_size(pkey); | |
1029 | ||
1030 | if ((i != n) || (n > j) || (n <= 0)) | |
1031 | { | |
1032 | /* wrong packet length */ | |
58964a49 | 1033 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1034 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1035 | goto f_err; |
d02b48c6 RE |
1036 | } |
1037 | ||
1038 | #ifndef NO_RSA | |
1039 | if (pkey->type == EVP_PKEY_RSA) | |
1040 | { | |
1041 | int num; | |
1042 | ||
1043 | j=0; | |
1044 | q=md_buf; | |
1045 | for (num=2; num > 0; num--) | |
1046 | { | |
58964a49 RE |
1047 | EVP_DigestInit(&md_ctx,(num == 2) |
1048 | ?s->ctx->md5:s->ctx->sha1); | |
d02b48c6 RE |
1049 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1050 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1051 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
1052 | EVP_DigestFinal(&md_ctx,q,(unsigned int *)&i); | |
1053 | q+=i; | |
1054 | j+=i; | |
1055 | } | |
1c80019a DSH |
1056 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1057 | pkey->pkey.rsa); | |
1058 | if (i < 0) | |
d02b48c6 | 1059 | { |
58964a49 | 1060 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1061 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1062 | goto f_err; | |
1063 | } | |
1c80019a | 1064 | if (i == 0) |
d02b48c6 RE |
1065 | { |
1066 | /* bad signature */ | |
58964a49 | 1067 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1068 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1069 | goto f_err; | |
1070 | } | |
1071 | } | |
1072 | else | |
1073 | #endif | |
1074 | #ifndef NO_DSA | |
1075 | if (pkey->type == EVP_PKEY_DSA) | |
1076 | { | |
1077 | /* lets do DSS */ | |
1078 | EVP_VerifyInit(&md_ctx,EVP_dss1()); | |
1079 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1080 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1081 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1082 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1083 | { | |
1084 | /* bad signature */ | |
58964a49 | 1085 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1086 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1087 | goto f_err; | |
1088 | } | |
1089 | } | |
1090 | else | |
1091 | #endif | |
1092 | { | |
1093 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); | |
1094 | goto err; | |
1095 | } | |
1096 | } | |
1097 | else | |
1098 | { | |
1099 | /* still data left over */ | |
1100 | if (!(alg & SSL_aNULL)) | |
1101 | { | |
1102 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); | |
1103 | goto err; | |
1104 | } | |
1105 | if (n != 0) | |
1106 | { | |
58964a49 | 1107 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1108 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1109 | goto f_err; | |
1110 | } | |
1111 | } | |
a8236c8c | 1112 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1113 | return(1); |
1114 | f_err: | |
1115 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1116 | err: | |
a8236c8c | 1117 | EVP_PKEY_free(pkey); |
6b521df3 BM |
1118 | #ifndef NO_RSA |
1119 | if (rsa != NULL) | |
1120 | RSA_free(rsa); | |
1121 | #endif | |
1122 | #ifndef NO_DH | |
1123 | if (dh != NULL) | |
1124 | DH_free(dh); | |
1125 | #endif | |
d02b48c6 RE |
1126 | return(-1); |
1127 | } | |
1128 | ||
6b691a5c | 1129 | static int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1130 | { |
1131 | int ok,ret=0; | |
58964a49 RE |
1132 | unsigned long n,nc,l; |
1133 | unsigned int llen,ctype_num,i; | |
d02b48c6 RE |
1134 | X509_NAME *xn=NULL; |
1135 | unsigned char *p,*d,*q; | |
f73e07cf | 1136 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 RE |
1137 | |
1138 | n=ssl3_get_message(s, | |
1139 | SSL3_ST_CR_CERT_REQ_A, | |
1140 | SSL3_ST_CR_CERT_REQ_B, | |
1141 | -1, | |
1142 | #if defined(MSDOS) && !defined(WIN32) | |
1143 | 1024*30, /* 30k max cert list :-) */ | |
1144 | #else | |
1145 | 1024*100, /* 100k max cert list :-) */ | |
1146 | #endif | |
1147 | &ok); | |
1148 | ||
1149 | if (!ok) return((int)n); | |
1150 | ||
1151 | s->s3->tmp.cert_req=0; | |
1152 | ||
1153 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1154 | { | |
1155 | s->s3->tmp.reuse_message=1; | |
1156 | return(1); | |
1157 | } | |
1158 | ||
1159 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1160 | { | |
58964a49 | 1161 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1162 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1163 | goto err; | |
1164 | } | |
1165 | ||
58964a49 RE |
1166 | /* TLS does not like anon-DH with client cert */ |
1167 | if (s->version > SSL3_VERSION) | |
1168 | { | |
1169 | l=s->s3->tmp.new_cipher->algorithms; | |
1170 | if (l & SSL_aNULL) | |
1171 | { | |
1172 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1173 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1174 | goto err; | |
1175 | } | |
1176 | } | |
1177 | ||
d02b48c6 RE |
1178 | d=p=(unsigned char *)s->init_buf->data; |
1179 | ||
f73e07cf | 1180 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1181 | { |
1182 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1183 | goto err; | |
1184 | } | |
1185 | ||
1186 | /* get the certificate types */ | |
1187 | ctype_num= *(p++); | |
1188 | if (ctype_num > SSL3_CT_NUMBER) | |
1189 | ctype_num=SSL3_CT_NUMBER; | |
1190 | for (i=0; i<ctype_num; i++) | |
1191 | s->s3->tmp.ctype[i]= p[i]; | |
1192 | p+=ctype_num; | |
1193 | ||
1194 | /* get the CA RDNs */ | |
1195 | n2s(p,llen); | |
dfeab068 RE |
1196 | #if 0 |
1197 | { | |
1198 | FILE *out; | |
1199 | out=fopen("/tmp/vsign.der","w"); | |
1200 | fwrite(p,1,llen,out); | |
1201 | fclose(out); | |
1202 | } | |
1203 | #endif | |
1204 | ||
d02b48c6 RE |
1205 | if ((llen+ctype_num+2+1) != n) |
1206 | { | |
58964a49 | 1207 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1208 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1209 | goto err; | |
1210 | } | |
1211 | ||
1212 | for (nc=0; nc<llen; ) | |
1213 | { | |
1214 | n2s(p,l); | |
1215 | if ((l+nc+2) > llen) | |
1216 | { | |
58964a49 | 1217 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 1218 | goto cont; /* netscape bugs */ |
58964a49 | 1219 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1220 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
1221 | goto err; | |
1222 | } | |
1223 | ||
1224 | q=p; | |
1225 | ||
1226 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
1227 | { | |
1228 | /* If netscape tollerance is on, ignore errors */ | |
58964a49 | 1229 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
1230 | goto cont; |
1231 | else | |
1232 | { | |
58964a49 | 1233 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1234 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
1235 | goto err; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | if (q != (p+l)) | |
1240 | { | |
58964a49 | 1241 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1242 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
1243 | goto err; | |
1244 | } | |
f73e07cf | 1245 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
1246 | { |
1247 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1248 | goto err; | |
1249 | } | |
1250 | ||
1251 | p+=l; | |
1252 | nc+=l+2; | |
1253 | } | |
1254 | ||
1255 | if (0) | |
1256 | { | |
1257 | cont: | |
1258 | ERR_clear_error(); | |
1259 | } | |
1260 | ||
1261 | /* we should setup a certficate to return.... */ | |
1262 | s->s3->tmp.cert_req=1; | |
1263 | s->s3->tmp.ctype_num=ctype_num; | |
1264 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 1265 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
1266 | s->s3->tmp.ca_names=ca_sk; |
1267 | ca_sk=NULL; | |
1268 | ||
1269 | ret=1; | |
1270 | err: | |
f73e07cf | 1271 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
1272 | return(ret); |
1273 | } | |
1274 | ||
6b691a5c | 1275 | static int ca_dn_cmp(X509_NAME **a, X509_NAME **b) |
d02b48c6 RE |
1276 | { |
1277 | return(X509_NAME_cmp(*a,*b)); | |
1278 | } | |
1279 | ||
6b691a5c | 1280 | static int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
1281 | { |
1282 | int ok,ret=0; | |
1283 | long n; | |
1284 | ||
1285 | n=ssl3_get_message(s, | |
1286 | SSL3_ST_CR_SRVR_DONE_A, | |
1287 | SSL3_ST_CR_SRVR_DONE_B, | |
1288 | SSL3_MT_SERVER_DONE, | |
1289 | 30, /* should be very small, like 0 :-) */ | |
1290 | &ok); | |
1291 | ||
1292 | if (!ok) return((int)n); | |
1293 | if (n > 0) | |
1294 | { | |
1295 | /* should contain no data */ | |
58964a49 | 1296 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1297 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
1298 | } | |
1299 | ret=1; | |
1300 | return(ret); | |
1301 | } | |
1302 | ||
6b691a5c | 1303 | static int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 1304 | { |
79df9d62 | 1305 | unsigned char *p,*d; |
d02b48c6 RE |
1306 | int n; |
1307 | unsigned long l; | |
79df9d62 UM |
1308 | #ifndef NO_RSA |
1309 | unsigned char *q; | |
d02b48c6 | 1310 | EVP_PKEY *pkey=NULL; |
79df9d62 | 1311 | #endif |
d02b48c6 RE |
1312 | |
1313 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
1314 | { | |
1315 | d=(unsigned char *)s->init_buf->data; | |
1316 | p= &(d[4]); | |
1317 | ||
1318 | l=s->s3->tmp.new_cipher->algorithms; | |
1319 | ||
1320 | #ifndef NO_RSA | |
1321 | if (l & SSL_kRSA) | |
1322 | { | |
1323 | RSA *rsa; | |
dfeab068 | 1324 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 1325 | |
b56bce4f BM |
1326 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
1327 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
1328 | else |
1329 | { | |
b56bce4f | 1330 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1331 | if ((pkey == NULL) || |
1332 | (pkey->type != EVP_PKEY_RSA) || | |
1333 | (pkey->pkey.rsa == NULL)) | |
1334 | { | |
1335 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); | |
1336 | goto err; | |
1337 | } | |
1338 | rsa=pkey->pkey.rsa; | |
50596582 | 1339 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1340 | } |
1341 | ||
413c4f45 MC |
1342 | tmp_buf[0]=s->client_version>>8; |
1343 | tmp_buf[1]=s->client_version&0xff; | |
d02b48c6 RE |
1344 | RAND_bytes(&(tmp_buf[2]),SSL_MAX_MASTER_KEY_LENGTH-2); |
1345 | ||
1346 | s->session->master_key_length=SSL_MAX_MASTER_KEY_LENGTH; | |
1347 | ||
58964a49 RE |
1348 | q=p; |
1349 | /* Fix buf for TLS and beyond */ | |
1350 | if (s->version > SSL3_VERSION) | |
1351 | p+=2; | |
1352 | n=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH, | |
1353 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); | |
dfeab068 RE |
1354 | #ifdef PKCS1_CHECK |
1355 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
1356 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
1357 | #endif | |
d02b48c6 RE |
1358 | if (n <= 0) |
1359 | { | |
1360 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
1361 | goto err; | |
1362 | } | |
1363 | ||
58964a49 RE |
1364 | /* Fix buf for TLS and beyond */ |
1365 | if (s->version > SSL3_VERSION) | |
1366 | { | |
1367 | s2n(n,q); | |
1368 | n+=2; | |
1369 | } | |
1370 | ||
d02b48c6 | 1371 | s->session->master_key_length= |
58964a49 | 1372 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 1373 | s->session->master_key, |
dfeab068 RE |
1374 | tmp_buf,SSL_MAX_MASTER_KEY_LENGTH); |
1375 | memset(tmp_buf,0,SSL_MAX_MASTER_KEY_LENGTH); | |
d02b48c6 RE |
1376 | } |
1377 | else | |
1378 | #endif | |
1379 | #ifndef NO_DH | |
1380 | if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) | |
1381 | { | |
1382 | DH *dh_srvr,*dh_clnt; | |
1383 | ||
b56bce4f BM |
1384 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
1385 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
1386 | else |
1387 | { | |
1388 | /* we get them from the cert */ | |
58964a49 | 1389 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1390 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
1391 | goto err; | |
1392 | } | |
1393 | ||
1394 | /* generate a new random key */ | |
1395 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
1396 | { | |
1397 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1398 | goto err; | |
1399 | } | |
1400 | if (!DH_generate_key(dh_clnt)) | |
1401 | { | |
1402 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1403 | goto err; | |
1404 | } | |
1405 | ||
1406 | /* use the 'p' output buffer for the DH key, but | |
1407 | * make sure to clear it out afterwards */ | |
58964a49 | 1408 | |
d02b48c6 | 1409 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 1410 | |
d02b48c6 RE |
1411 | if (n <= 0) |
1412 | { | |
1413 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1414 | goto err; | |
1415 | } | |
1416 | ||
1417 | /* generate master key from the result */ | |
1418 | s->session->master_key_length= | |
58964a49 | 1419 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1420 | s->session->master_key,p,n); |
1421 | /* clean up */ | |
1422 | memset(p,0,n); | |
1423 | ||
1424 | /* send off the data */ | |
1425 | n=BN_num_bytes(dh_clnt->pub_key); | |
1426 | s2n(n,p); | |
1427 | BN_bn2bin(dh_clnt->pub_key,p); | |
1428 | n+=2; | |
1429 | ||
1430 | DH_free(dh_clnt); | |
1431 | ||
1432 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
1433 | } | |
1434 | else | |
1435 | #endif | |
1436 | { | |
58964a49 | 1437 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1438 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR); |
1439 | goto err; | |
1440 | } | |
1441 | ||
1442 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
1443 | l2n3(n,d); | |
1444 | ||
1445 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
1446 | /* number of bytes to write */ | |
1447 | s->init_num=n+4; | |
1448 | s->init_off=0; | |
1449 | } | |
1450 | ||
1451 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
1452 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
1453 | err: | |
1454 | return(-1); | |
1455 | } | |
1456 | ||
6b691a5c | 1457 | static int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
1458 | { |
1459 | unsigned char *p,*d; | |
1460 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
1461 | EVP_PKEY *pkey; | |
79df9d62 | 1462 | #ifndef NO_RSA |
ca7fea96 | 1463 | unsigned u=0; |
79df9d62 | 1464 | #endif |
d02b48c6 | 1465 | unsigned long n; |
58964a49 RE |
1466 | #ifndef NO_DSA |
1467 | int j; | |
1468 | #endif | |
d02b48c6 RE |
1469 | |
1470 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) | |
1471 | { | |
1472 | d=(unsigned char *)s->init_buf->data; | |
1473 | p= &(d[4]); | |
1474 | pkey=s->cert->key->privatekey; | |
1475 | ||
58964a49 RE |
1476 | s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), |
1477 | &(data[MD5_DIGEST_LENGTH])); | |
d02b48c6 RE |
1478 | |
1479 | #ifndef NO_RSA | |
1480 | if (pkey->type == EVP_PKEY_RSA) | |
1481 | { | |
58964a49 RE |
1482 | s->method->ssl3_enc->cert_verify_mac(s, |
1483 | &(s->s3->finish_dgst1),&(data[0])); | |
1c80019a DSH |
1484 | if (RSA_sign(NID_md5_sha1, data, |
1485 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 1486 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
1487 | { |
1488 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
1489 | goto err; | |
1490 | } | |
ca7fea96 BL |
1491 | s2n(u,p); |
1492 | n=u+2; | |
d02b48c6 RE |
1493 | } |
1494 | else | |
1495 | #endif | |
1496 | #ifndef NO_DSA | |
1497 | if (pkey->type == EVP_PKEY_DSA) | |
1498 | { | |
1499 | if (!DSA_sign(pkey->save_type, | |
1500 | &(data[MD5_DIGEST_LENGTH]), | |
1501 | SHA_DIGEST_LENGTH,&(p[2]), | |
1502 | (unsigned int *)&j,pkey->pkey.dsa)) | |
1503 | { | |
1504 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
1505 | goto err; | |
1506 | } | |
1507 | s2n(j,p); | |
1508 | n=j+2; | |
1509 | } | |
1510 | else | |
1511 | #endif | |
1512 | { | |
1513 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,SSL_R_INTERNAL_ERROR); | |
1514 | goto err; | |
1515 | } | |
1516 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; | |
1517 | l2n3(n,d); | |
1518 | ||
1519 | s->init_num=(int)n+4; | |
1520 | s->init_off=0; | |
1521 | } | |
1522 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
1523 | err: | |
1524 | return(-1); | |
1525 | } | |
1526 | ||
6b691a5c | 1527 | static int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
1528 | { |
1529 | X509 *x509=NULL; | |
1530 | EVP_PKEY *pkey=NULL; | |
1531 | int i; | |
1532 | unsigned long l; | |
1533 | ||
1534 | if (s->state == SSL3_ST_CW_CERT_A) | |
1535 | { | |
1536 | if ((s->cert == NULL) || | |
1537 | (s->cert->key->x509 == NULL) || | |
1538 | (s->cert->key->privatekey == NULL)) | |
1539 | s->state=SSL3_ST_CW_CERT_B; | |
1540 | else | |
1541 | s->state=SSL3_ST_CW_CERT_C; | |
1542 | } | |
1543 | ||
1544 | /* We need to get a client cert */ | |
1545 | if (s->state == SSL3_ST_CW_CERT_B) | |
1546 | { | |
1547 | /* If we get an error, we need to | |
1548 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
1549 | * We then get retied later */ | |
1550 | i=0; | |
1551 | if (s->ctx->client_cert_cb != NULL) | |
1552 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); | |
1553 | if (i < 0) | |
1554 | { | |
1555 | s->rwstate=SSL_X509_LOOKUP; | |
1556 | return(-1); | |
1557 | } | |
1558 | s->rwstate=SSL_NOTHING; | |
1559 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
1560 | { | |
1561 | s->state=SSL3_ST_CW_CERT_B; | |
1562 | if ( !SSL_use_certificate(s,x509) || | |
1563 | !SSL_use_PrivateKey(s,pkey)) | |
1564 | i=0; | |
1565 | } | |
1566 | else if (i == 1) | |
1567 | { | |
1568 | i=0; | |
1569 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
1570 | } | |
1571 | ||
1572 | if (x509 != NULL) X509_free(x509); | |
1573 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
1574 | if (i == 0) | |
1575 | { | |
58964a49 RE |
1576 | if (s->version == SSL3_VERSION) |
1577 | { | |
1578 | s->s3->tmp.cert_req=0; | |
1579 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
1580 | return(1); | |
1581 | } | |
1582 | else | |
1583 | { | |
1584 | s->s3->tmp.cert_req=2; | |
1585 | } | |
d02b48c6 RE |
1586 | } |
1587 | ||
1588 | /* Ok, we have a cert */ | |
1589 | s->state=SSL3_ST_CW_CERT_C; | |
1590 | } | |
1591 | ||
1592 | if (s->state == SSL3_ST_CW_CERT_C) | |
1593 | { | |
1594 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
1595 | l=ssl3_output_cert_chain(s, |
1596 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
d02b48c6 RE |
1597 | s->init_num=(int)l; |
1598 | s->init_off=0; | |
1599 | } | |
1600 | /* SSL3_ST_CW_CERT_D */ | |
1601 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
1602 | } | |
1603 | ||
1604 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
1605 | ||
6b691a5c | 1606 | static int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
1607 | { |
1608 | int i,idx; | |
1609 | long algs; | |
1610 | EVP_PKEY *pkey=NULL; | |
b56bce4f | 1611 | SESS_CERT *sc; |
79df9d62 | 1612 | #ifndef NO_RSA |
d02b48c6 | 1613 | RSA *rsa; |
79df9d62 UM |
1614 | #endif |
1615 | #ifndef NO_DH | |
d02b48c6 | 1616 | DH *dh; |
79df9d62 | 1617 | #endif |
d02b48c6 | 1618 | |
b56bce4f | 1619 | sc=s->session->sess_cert; |
d02b48c6 | 1620 | |
b56bce4f | 1621 | if (sc == NULL) |
d02b48c6 RE |
1622 | { |
1623 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_INTERNAL_ERROR); | |
1624 | goto err; | |
1625 | } | |
1626 | ||
1627 | algs=s->s3->tmp.new_cipher->algorithms; | |
1628 | ||
1629 | /* we don't have a certificate */ | |
1630 | if (algs & (SSL_aDH|SSL_aNULL)) | |
1631 | return(1); | |
1632 | ||
79df9d62 | 1633 | #ifndef NO_RSA |
b56bce4f | 1634 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 UM |
1635 | #endif |
1636 | #ifndef NO_DH | |
b56bce4f | 1637 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 1638 | #endif |
d02b48c6 RE |
1639 | |
1640 | /* This is the passed certificate */ | |
1641 | ||
b56bce4f BM |
1642 | idx=sc->peer_cert_type; |
1643 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); | |
1644 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 1645 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1646 | |
1647 | ||
1648 | /* Check that we have a certificate if we require one */ | |
1649 | if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) | |
1650 | { | |
1651 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
1652 | goto f_err; | |
1653 | } | |
1654 | #ifndef NO_DSA | |
1655 | else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) | |
1656 | { | |
1657 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
1658 | goto f_err; | |
1659 | } | |
1660 | #endif | |
79df9d62 | 1661 | #ifndef NO_RSA |
d02b48c6 RE |
1662 | if ((algs & SSL_kRSA) && |
1663 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) | |
1664 | { | |
1665 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
1666 | goto f_err; | |
1667 | } | |
79df9d62 | 1668 | #endif |
d02b48c6 | 1669 | #ifndef NO_DH |
79df9d62 | 1670 | if ((algs & SSL_kEDH) && |
d02b48c6 RE |
1671 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
1672 | { | |
1673 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
1674 | goto f_err; | |
1675 | } | |
1676 | else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) | |
1677 | { | |
1678 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
1679 | goto f_err; | |
1680 | } | |
1681 | #ifndef NO_DSA | |
1682 | else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) | |
1683 | { | |
1684 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
1685 | goto f_err; | |
1686 | } | |
1687 | #endif | |
1688 | #endif | |
1689 | ||
06ab81f9 | 1690 | if (SSL_IS_EXPORT(algs) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 RE |
1691 | { |
1692 | #ifndef NO_RSA | |
1693 | if (algs & SSL_kRSA) | |
1694 | { | |
06ab81f9 BL |
1695 | if (rsa == NULL |
1696 | || RSA_size(rsa) > SSL_EXPORT_PKEYLENGTH(algs)) | |
d02b48c6 RE |
1697 | { |
1698 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
1699 | goto f_err; | |
1700 | } | |
1701 | } | |
1702 | else | |
1703 | #endif | |
1704 | #ifndef NO_DH | |
1705 | if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) | |
06ab81f9 BL |
1706 | { |
1707 | if (dh == NULL | |
1708 | || DH_size(dh) > SSL_EXPORT_PKEYLENGTH(algs)) | |
d02b48c6 RE |
1709 | { |
1710 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
1711 | goto f_err; | |
1712 | } | |
1713 | } | |
1714 | else | |
1715 | #endif | |
1716 | { | |
1717 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
1718 | goto f_err; | |
1719 | } | |
1720 | } | |
1721 | return(1); | |
1722 | f_err: | |
58964a49 | 1723 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1724 | err: |
1725 | return(0); | |
1726 | } | |
1727 |