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d02b48c6 | 1 | /* ssl/s2_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 | */ | |
cf82191d BM |
58 | /* ==================================================================== |
59 | * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. | |
60 | * | |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
d02b48c6 | 111 | |
aa82db4f | 112 | #include "ssl_locl.h" |
bc36ee62 | 113 | #ifndef OPENSSL_NO_SSL2 |
d02b48c6 | 114 | #include <stdio.h> |
ec577822 BM |
115 | #include <openssl/rand.h> |
116 | #include <openssl/buffer.h> | |
117 | #include <openssl/objects.h> | |
ec577822 | 118 | #include <openssl/evp.h> |
d02b48c6 | 119 | |
9b3086fe | 120 | static SSL_METHOD *ssl2_get_client_method(int ver); |
d02b48c6 RE |
121 | static int get_server_finished(SSL *s); |
122 | static int get_server_verify(SSL *s); | |
123 | static int get_server_hello(SSL *s); | |
124 | static int client_hello(SSL *s); | |
125 | static int client_master_key(SSL *s); | |
126 | static int client_finished(SSL *s); | |
127 | static int client_certificate(SSL *s); | |
b56bce4f | 128 | static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from, |
d02b48c6 | 129 | unsigned char *to,int padding); |
d02b48c6 RE |
130 | #define BREAK break |
131 | ||
6b691a5c | 132 | static SSL_METHOD *ssl2_get_client_method(int ver) |
d02b48c6 | 133 | { |
58964a49 | 134 | if (ver == SSL2_VERSION) |
d02b48c6 RE |
135 | return(SSLv2_client_method()); |
136 | else | |
137 | return(NULL); | |
138 | } | |
139 | ||
222f2246 DSH |
140 | IMPLEMENT_ssl2_meth_func(SSLv2_client_method, |
141 | ssl_undefined_function, | |
142 | ssl2_connect, | |
143 | ssl2_get_client_method) | |
d02b48c6 | 144 | |
6b691a5c | 145 | int ssl2_connect(SSL *s) |
d02b48c6 | 146 | { |
974d52fd | 147 | unsigned long l=(unsigned long)time(NULL); |
d02b48c6 RE |
148 | BUF_MEM *buf=NULL; |
149 | int ret= -1; | |
45d87a1f | 150 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 RE |
151 | int new_state,state; |
152 | ||
eb952088 | 153 | RAND_add(&l,sizeof(l),0); |
d02b48c6 | 154 | ERR_clear_error(); |
58964a49 | 155 | clear_sys_error(); |
d02b48c6 RE |
156 | |
157 | if (s->info_callback != NULL) | |
158 | cb=s->info_callback; | |
159 | else if (s->ctx->info_callback != NULL) | |
160 | cb=s->ctx->info_callback; | |
161 | ||
162 | /* init things to blank */ | |
d02b48c6 | 163 | s->in_handshake++; |
979689aa | 164 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 RE |
165 | |
166 | for (;;) | |
167 | { | |
168 | state=s->state; | |
169 | ||
170 | switch (s->state) | |
171 | { | |
172 | case SSL_ST_BEFORE: | |
173 | case SSL_ST_CONNECT: | |
174 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
175 | case SSL_ST_OK|SSL_ST_CONNECT: | |
176 | ||
413c4f45 | 177 | s->server=0; |
d02b48c6 RE |
178 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
179 | ||
58964a49 | 180 | s->version=SSL2_VERSION; |
d02b48c6 RE |
181 | s->type=SSL_ST_CONNECT; |
182 | ||
183 | buf=s->init_buf; | |
184 | if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL)) | |
185 | { | |
186 | ret= -1; | |
187 | goto end; | |
188 | } | |
189 | if (!BUF_MEM_grow(buf, | |
190 | SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) | |
191 | { | |
8d6ad9e3 RL |
192 | if (buf == s->init_buf) |
193 | buf=NULL; | |
d02b48c6 RE |
194 | ret= -1; |
195 | goto end; | |
196 | } | |
197 | s->init_buf=buf; | |
8d6ad9e3 | 198 | buf=NULL; |
d02b48c6 RE |
199 | s->init_num=0; |
200 | s->state=SSL2_ST_SEND_CLIENT_HELLO_A; | |
413c4f45 | 201 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
202 | s->handshake_func=ssl2_connect; |
203 | BREAK; | |
204 | ||
205 | case SSL2_ST_SEND_CLIENT_HELLO_A: | |
206 | case SSL2_ST_SEND_CLIENT_HELLO_B: | |
207 | s->shutdown=0; | |
208 | ret=client_hello(s); | |
209 | if (ret <= 0) goto end; | |
210 | s->init_num=0; | |
211 | s->state=SSL2_ST_GET_SERVER_HELLO_A; | |
212 | BREAK; | |
213 | ||
214 | case SSL2_ST_GET_SERVER_HELLO_A: | |
215 | case SSL2_ST_GET_SERVER_HELLO_B: | |
216 | ret=get_server_hello(s); | |
217 | if (ret <= 0) goto end; | |
218 | s->init_num=0; | |
219 | if (!s->hit) /* new session */ | |
220 | { | |
221 | s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A; | |
222 | BREAK; | |
223 | } | |
224 | else | |
225 | { | |
226 | s->state=SSL2_ST_CLIENT_START_ENCRYPTION; | |
227 | break; | |
228 | } | |
229 | ||
230 | case SSL2_ST_SEND_CLIENT_MASTER_KEY_A: | |
231 | case SSL2_ST_SEND_CLIENT_MASTER_KEY_B: | |
232 | ret=client_master_key(s); | |
233 | if (ret <= 0) goto end; | |
234 | s->init_num=0; | |
235 | s->state=SSL2_ST_CLIENT_START_ENCRYPTION; | |
236 | break; | |
237 | ||
238 | case SSL2_ST_CLIENT_START_ENCRYPTION: | |
239 | /* Ok, we now have all the stuff needed to | |
240 | * start encrypting, so lets fire it up :-) */ | |
241 | if (!ssl2_enc_init(s,1)) | |
242 | { | |
243 | ret= -1; | |
244 | goto end; | |
245 | } | |
246 | s->s2->clear_text=0; | |
247 | s->state=SSL2_ST_SEND_CLIENT_FINISHED_A; | |
248 | break; | |
249 | ||
250 | case SSL2_ST_SEND_CLIENT_FINISHED_A: | |
251 | case SSL2_ST_SEND_CLIENT_FINISHED_B: | |
252 | ret=client_finished(s); | |
253 | if (ret <= 0) goto end; | |
254 | s->init_num=0; | |
255 | s->state=SSL2_ST_GET_SERVER_VERIFY_A; | |
256 | break; | |
257 | ||
258 | case SSL2_ST_GET_SERVER_VERIFY_A: | |
259 | case SSL2_ST_GET_SERVER_VERIFY_B: | |
260 | ret=get_server_verify(s); | |
261 | if (ret <= 0) goto end; | |
262 | s->init_num=0; | |
263 | s->state=SSL2_ST_GET_SERVER_FINISHED_A; | |
264 | break; | |
265 | ||
266 | case SSL2_ST_GET_SERVER_FINISHED_A: | |
267 | case SSL2_ST_GET_SERVER_FINISHED_B: | |
268 | ret=get_server_finished(s); | |
269 | if (ret <= 0) goto end; | |
270 | break; | |
271 | ||
272 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_A: | |
273 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_B: | |
274 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_C: | |
275 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_D: | |
276 | case SSL2_ST_X509_GET_CLIENT_CERTIFICATE: | |
277 | ret=client_certificate(s); | |
278 | if (ret <= 0) goto end; | |
279 | s->init_num=0; | |
280 | s->state=SSL2_ST_GET_SERVER_FINISHED_A; | |
281 | break; | |
282 | ||
283 | case SSL_ST_OK: | |
413c4f45 MC |
284 | if (s->init_buf != NULL) |
285 | { | |
286 | BUF_MEM_free(s->init_buf); | |
287 | s->init_buf=NULL; | |
288 | } | |
d02b48c6 RE |
289 | s->init_num=0; |
290 | /* ERR_clear_error();*/ | |
291 | ||
292 | /* If we want to cache session-ids in the client | |
657e60fa | 293 | * and we successfully add the session-id to the |
d02b48c6 RE |
294 | * cache, and there is a callback, then pass it out. |
295 | * 26/11/96 - eay - only add if not a re-used session. | |
296 | */ | |
297 | ||
298 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 299 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
300 | |
301 | ret=1; | |
302 | /* s->server=0; */ | |
413c4f45 | 303 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
304 | |
305 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
306 | ||
307 | goto end; | |
dfeab068 | 308 | /* break; */ |
d02b48c6 RE |
309 | default: |
310 | SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE); | |
311 | return(-1); | |
312 | /* break; */ | |
313 | } | |
314 | ||
315 | if ((cb != NULL) && (s->state != state)) | |
316 | { | |
317 | new_state=s->state; | |
318 | s->state=state; | |
319 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
320 | s->state=new_state; | |
321 | } | |
322 | } | |
323 | end: | |
324 | s->in_handshake--; | |
8d6ad9e3 RL |
325 | if (buf != NULL) |
326 | BUF_MEM_free(buf); | |
d02b48c6 RE |
327 | if (cb != NULL) |
328 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
329 | return(ret); | |
330 | } | |
331 | ||
6b691a5c | 332 | static int get_server_hello(SSL *s) |
d02b48c6 RE |
333 | { |
334 | unsigned char *buf; | |
335 | unsigned char *p; | |
336 | int i,j; | |
cf82191d | 337 | unsigned long len; |
836f9960 | 338 | STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow; |
d02b48c6 RE |
339 | |
340 | buf=(unsigned char *)s->init_buf->data; | |
341 | p=buf; | |
342 | if (s->state == SSL2_ST_GET_SERVER_HELLO_A) | |
343 | { | |
344 | i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num); | |
345 | if (i < (11-s->init_num)) | |
346 | return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i)); | |
cf82191d | 347 | s->init_num = 11; |
d02b48c6 RE |
348 | |
349 | if (*(p++) != SSL2_MT_SERVER_HELLO) | |
350 | { | |
351 | if (p[-1] != SSL2_MT_ERROR) | |
352 | { | |
353 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
354 | SSLerr(SSL_F_GET_SERVER_HELLO, | |
355 | SSL_R_READ_WRONG_PACKET_TYPE); | |
356 | } | |
357 | else | |
358 | SSLerr(SSL_F_GET_SERVER_HELLO, | |
359 | SSL_R_PEER_ERROR); | |
360 | return(-1); | |
361 | } | |
37b0d5d0 AP |
362 | #ifdef __APPLE_CC__ |
363 | /* The Rhapsody 5.5 (a.k.a. MacOS X) compiler bug | |
364 | * workaround. <appro@fy.chalmers.se> */ | |
365 | s->hit=(i=*(p++))?1:0; | |
366 | #else | |
d02b48c6 | 367 | s->hit=(*(p++))?1:0; |
37b0d5d0 | 368 | #endif |
d02b48c6 RE |
369 | s->s2->tmp.cert_type= *(p++); |
370 | n2s(p,i); | |
371 | if (i < s->version) s->version=i; | |
372 | n2s(p,i); s->s2->tmp.cert_length=i; | |
373 | n2s(p,i); s->s2->tmp.csl=i; | |
374 | n2s(p,i); s->s2->tmp.conn_id_length=i; | |
375 | s->state=SSL2_ST_GET_SERVER_HELLO_B; | |
d02b48c6 RE |
376 | } |
377 | ||
378 | /* SSL2_ST_GET_SERVER_HELLO_B */ | |
cf82191d BM |
379 | len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length; |
380 | if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) | |
381 | { | |
382 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG); | |
383 | return -1; | |
384 | } | |
385 | j = (int)len - s->init_num; | |
386 | i = ssl2_read(s,(char *)&(buf[s->init_num]),j); | |
d02b48c6 | 387 | if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i)); |
cf82191d BM |
388 | if (s->msg_callback) |
389 | s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */ | |
d02b48c6 RE |
390 | |
391 | /* things are looking good */ | |
392 | ||
cf82191d | 393 | p = buf + 11; |
d02b48c6 RE |
394 | if (s->hit) |
395 | { | |
396 | if (s->s2->tmp.cert_length != 0) | |
397 | { | |
398 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO); | |
399 | return(-1); | |
400 | } | |
401 | if (s->s2->tmp.cert_type != 0) | |
402 | { | |
58964a49 | 403 | if (!(s->options & |
d02b48c6 RE |
404 | SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG)) |
405 | { | |
406 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO); | |
407 | return(-1); | |
408 | } | |
409 | } | |
410 | if (s->s2->tmp.csl != 0) | |
411 | { | |
412 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO); | |
413 | return(-1); | |
414 | } | |
415 | } | |
416 | else | |
417 | { | |
418 | #ifdef undef | |
419 | /* very bad */ | |
420 | memset(s->session->session_id,0, | |
421 | SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES); | |
422 | s->session->session_id_length=0; | |
423 | */ | |
424 | #endif | |
425 | ||
657e60fa | 426 | /* we need to do this in case we were trying to reuse a |
d02b48c6 RE |
427 | * client session but others are already reusing it. |
428 | * If this was a new 'blank' session ID, the session-id | |
429 | * length will still be 0 */ | |
430 | if (s->session->session_id_length > 0) | |
431 | { | |
432 | if (!ssl_get_new_session(s,0)) | |
433 | { | |
434 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
435 | return(-1); | |
436 | } | |
437 | } | |
438 | ||
439 | if (ssl2_set_certificate(s,s->s2->tmp.cert_type, | |
440 | s->s2->tmp.cert_length,p) <= 0) | |
441 | { | |
442 | ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE); | |
443 | return(-1); | |
444 | } | |
445 | p+=s->s2->tmp.cert_length; | |
446 | ||
447 | if (s->s2->tmp.csl == 0) | |
448 | { | |
449 | ssl2_return_error(s,SSL2_PE_NO_CIPHER); | |
450 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST); | |
451 | return(-1); | |
452 | } | |
453 | ||
454 | /* We have just received a list of ciphers back from the | |
455 | * server. We need to get the ones that match, then select | |
456 | * the one we want the most :-). */ | |
457 | ||
458 | /* load the ciphers */ | |
459 | sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl, | |
f73e07cf | 460 | &s->session->ciphers); |
d02b48c6 RE |
461 | p+=s->s2->tmp.csl; |
462 | if (sk == NULL) | |
463 | { | |
464 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
465 | SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE); | |
466 | return(-1); | |
467 | } | |
468 | ||
927a28ba | 469 | (void)sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp); |
d02b48c6 RE |
470 | |
471 | /* get the array of ciphers we will accept */ | |
836f9960 | 472 | cl=SSL_get_ciphers(s); |
927a28ba | 473 | (void)sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp); |
836f9960 LJ |
474 | |
475 | /* | |
476 | * If server preference flag set, choose the first | |
477 | * (highest priority) cipher the server sends, otherwise | |
478 | * client preference has priority. | |
479 | */ | |
480 | if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) | |
481 | { | |
482 | prio = sk; | |
483 | allow = cl; | |
484 | } | |
485 | else | |
486 | { | |
487 | prio = cl; | |
488 | allow = sk; | |
489 | } | |
d02b48c6 RE |
490 | /* In theory we could have ciphers sent back that we |
491 | * don't want to use but that does not matter since we | |
657e60fa | 492 | * will check against the list we originally sent and |
d02b48c6 RE |
493 | * for performance reasons we should not bother to match |
494 | * the two lists up just to check. */ | |
836f9960 | 495 | for (i=0; i<sk_SSL_CIPHER_num(prio); i++) |
d02b48c6 | 496 | { |
836f9960 LJ |
497 | if (sk_SSL_CIPHER_find(allow, |
498 | sk_SSL_CIPHER_value(prio,i)) >= 0) | |
d02b48c6 RE |
499 | break; |
500 | } | |
501 | ||
836f9960 | 502 | if (i >= sk_SSL_CIPHER_num(prio)) |
d02b48c6 RE |
503 | { |
504 | ssl2_return_error(s,SSL2_PE_NO_CIPHER); | |
505 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH); | |
506 | return(-1); | |
507 | } | |
836f9960 | 508 | s->session->cipher=sk_SSL_CIPHER_value(prio,i); |
d02b48c6 | 509 | |
d02b48c6 | 510 | |
2557eaea BM |
511 | if (s->session->peer != NULL) /* can't happen*/ |
512 | { | |
513 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); | |
5277d7cb | 514 | SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); |
2557eaea BM |
515 | return(-1); |
516 | } | |
517 | ||
518 | s->session->peer = s->session->sess_cert->peer_key->x509; | |
519 | /* peer_key->x509 has been set by ssl2_set_certificate. */ | |
520 | CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509); | |
521 | } | |
522 | ||
951dfbb1 MC |
523 | if (s->session->sess_cert == NULL |
524 | || s->session->peer != s->session->sess_cert->peer_key->x509) | |
2557eaea BM |
525 | /* can't happen */ |
526 | { | |
527 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); | |
5277d7cb | 528 | SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); |
2557eaea BM |
529 | return(-1); |
530 | } | |
531 | ||
d02b48c6 | 532 | s->s2->conn_id_length=s->s2->tmp.conn_id_length; |
5574e0ed BM |
533 | if (s->s2->conn_id_length > sizeof s->s2->conn_id) |
534 | { | |
535 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); | |
536 | SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG); | |
537 | return -1; | |
538 | } | |
d02b48c6 RE |
539 | memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length); |
540 | return(1); | |
541 | } | |
542 | ||
6b691a5c | 543 | static int client_hello(SSL *s) |
d02b48c6 RE |
544 | { |
545 | unsigned char *buf; | |
546 | unsigned char *p,*d; | |
547 | /* CIPHER **cipher;*/ | |
548 | int i,n,j; | |
549 | ||
550 | buf=(unsigned char *)s->init_buf->data; | |
551 | if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A) | |
552 | { | |
553 | if ((s->session == NULL) || | |
554 | (s->session->ssl_version != s->version)) | |
555 | { | |
556 | if (!ssl_get_new_session(s,0)) | |
557 | { | |
558 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
559 | return(-1); | |
560 | } | |
561 | } | |
562 | /* else use the pre-loaded session */ | |
563 | ||
564 | p=buf; /* header */ | |
565 | d=p+9; /* data section */ | |
566 | *(p++)=SSL2_MT_CLIENT_HELLO; /* type */ | |
6d02d8e4 | 567 | s2n(SSL2_VERSION,p); /* version */ |
d02b48c6 RE |
568 | n=j=0; |
569 | ||
c6c2e313 | 570 | n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d,0); |
d02b48c6 RE |
571 | d+=n; |
572 | ||
573 | if (n == 0) | |
574 | { | |
575 | SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
576 | return(-1); | |
577 | } | |
578 | ||
579 | s2n(n,p); /* cipher spec num bytes */ | |
580 | ||
581 | if ((s->session->session_id_length > 0) && | |
582 | (s->session->session_id_length <= | |
583 | SSL2_MAX_SSL_SESSION_ID_LENGTH)) | |
584 | { | |
585 | i=s->session->session_id_length; | |
586 | s2n(i,p); /* session id length */ | |
587 | memcpy(d,s->session->session_id,(unsigned int)i); | |
588 | d+=i; | |
589 | } | |
590 | else | |
591 | { | |
592 | s2n(0,p); | |
593 | } | |
594 | ||
595 | s->s2->challenge_length=SSL2_CHALLENGE_LENGTH; | |
596 | s2n(SSL2_CHALLENGE_LENGTH,p); /* challenge length */ | |
597 | /*challenge id data*/ | |
7c7667b8 NL |
598 | if (RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH) <= 0) |
599 | return -1; | |
d02b48c6 RE |
600 | memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH); |
601 | d+=SSL2_CHALLENGE_LENGTH; | |
602 | ||
603 | s->state=SSL2_ST_SEND_CLIENT_HELLO_B; | |
604 | s->init_num=d-buf; | |
605 | s->init_off=0; | |
606 | } | |
607 | /* SSL2_ST_SEND_CLIENT_HELLO_B */ | |
608 | return(ssl2_do_write(s)); | |
609 | } | |
610 | ||
6b691a5c | 611 | static int client_master_key(SSL *s) |
d02b48c6 RE |
612 | { |
613 | unsigned char *buf; | |
614 | unsigned char *p,*d; | |
615 | int clear,enc,karg,i; | |
616 | SSL_SESSION *sess; | |
e778802f BL |
617 | const EVP_CIPHER *c; |
618 | const EVP_MD *md; | |
d02b48c6 RE |
619 | |
620 | buf=(unsigned char *)s->init_buf->data; | |
621 | if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A) | |
622 | { | |
623 | ||
413c4f45 | 624 | if (!ssl_cipher_get_evp(s->session,&c,&md,NULL)) |
d02b48c6 RE |
625 | { |
626 | ssl2_return_error(s,SSL2_PE_NO_CIPHER); | |
627 | SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); | |
628 | return(-1); | |
629 | } | |
630 | sess=s->session; | |
631 | p=buf; | |
632 | d=p+10; | |
633 | *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */ | |
634 | ||
635 | i=ssl_put_cipher_by_char(s,sess->cipher,p); | |
636 | p+=i; | |
637 | ||
638 | /* make key_arg data */ | |
639 | i=EVP_CIPHER_iv_length(c); | |
640 | sess->key_arg_length=i; | |
5574e0ed BM |
641 | if (i > SSL_MAX_KEY_ARG_LENGTH) |
642 | { | |
643 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); | |
644 | SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); | |
645 | return -1; | |
646 | } | |
7c7667b8 NL |
647 | if (i > 0) |
648 | if (RAND_pseudo_bytes(sess->key_arg,i) <= 0) | |
649 | return -1; | |
d02b48c6 RE |
650 | |
651 | /* make a master key */ | |
652 | i=EVP_CIPHER_key_length(c); | |
653 | sess->master_key_length=i; | |
e7f97e2d UM |
654 | if (i > 0) |
655 | { | |
27545970 | 656 | if (i > (int)sizeof(sess->master_key)) |
5574e0ed BM |
657 | { |
658 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); | |
659 | SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); | |
660 | return -1; | |
661 | } | |
e7f97e2d UM |
662 | if (RAND_bytes(sess->master_key,i) <= 0) |
663 | { | |
664 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
af6f3881 | 665 | return(-1); |
e7f97e2d UM |
666 | } |
667 | } | |
d02b48c6 RE |
668 | |
669 | if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC) | |
670 | enc=8; | |
06ab81f9 | 671 | else if (SSL_C_IS_EXPORT(sess->cipher)) |
d02b48c6 RE |
672 | enc=5; |
673 | else | |
674 | enc=i; | |
675 | ||
27545970 | 676 | if ((int)i < enc) |
d02b48c6 RE |
677 | { |
678 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
679 | SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR); | |
680 | return(-1); | |
681 | } | |
682 | clear=i-enc; | |
683 | s2n(clear,p); | |
684 | memcpy(d,sess->master_key,(unsigned int)clear); | |
685 | d+=clear; | |
686 | ||
9d5cceac | 687 | enc=ssl_rsa_public_encrypt(sess->sess_cert,enc, |
d02b48c6 RE |
688 | &(sess->master_key[clear]),d, |
689 | (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING); | |
690 | if (enc <= 0) | |
691 | { | |
692 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
693 | SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR); | |
694 | return(-1); | |
695 | } | |
dfeab068 RE |
696 | #ifdef PKCS1_CHECK |
697 | if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++; | |
698 | if (s->options & SSL_OP_PKCS1_CHECK_2) | |
699 | sess->master_key[clear]++; | |
700 | #endif | |
d02b48c6 RE |
701 | s2n(enc,p); |
702 | d+=enc; | |
703 | karg=sess->key_arg_length; | |
704 | s2n(karg,p); /* key arg size */ | |
27545970 | 705 | if (karg > (int)sizeof(sess->key_arg)) |
5574e0ed BM |
706 | { |
707 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
708 | SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); | |
709 | return -1; | |
710 | } | |
d02b48c6 RE |
711 | memcpy(d,sess->key_arg,(unsigned int)karg); |
712 | d+=karg; | |
713 | ||
714 | s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B; | |
715 | s->init_num=d-buf; | |
716 | s->init_off=0; | |
717 | } | |
718 | ||
719 | /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */ | |
720 | return(ssl2_do_write(s)); | |
721 | } | |
722 | ||
6b691a5c | 723 | static int client_finished(SSL *s) |
d02b48c6 RE |
724 | { |
725 | unsigned char *p; | |
726 | ||
727 | if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A) | |
728 | { | |
729 | p=(unsigned char *)s->init_buf->data; | |
730 | *(p++)=SSL2_MT_CLIENT_FINISHED; | |
5574e0ed BM |
731 | if (s->s2->conn_id_length > sizeof s->s2->conn_id) |
732 | { | |
733 | SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR); | |
734 | return -1; | |
735 | } | |
d02b48c6 RE |
736 | memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length); |
737 | ||
738 | s->state=SSL2_ST_SEND_CLIENT_FINISHED_B; | |
739 | s->init_num=s->s2->conn_id_length+1; | |
740 | s->init_off=0; | |
741 | } | |
742 | return(ssl2_do_write(s)); | |
743 | } | |
744 | ||
745 | /* read the data and then respond */ | |
6b691a5c | 746 | static int client_certificate(SSL *s) |
d02b48c6 RE |
747 | { |
748 | unsigned char *buf; | |
749 | unsigned char *p,*d; | |
750 | int i; | |
751 | unsigned int n; | |
cf82191d | 752 | int cert_ch_len; |
d02b48c6 RE |
753 | unsigned char *cert_ch; |
754 | ||
755 | buf=(unsigned char *)s->init_buf->data; | |
d02b48c6 RE |
756 | |
757 | /* We have a cert associated with the SSL, so attach it to | |
758 | * the session if it does not have one */ | |
759 | ||
760 | if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A) | |
761 | { | |
762 | i=ssl2_read(s,(char *)&(buf[s->init_num]), | |
0a594209 RL |
763 | SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num); |
764 | if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num)) | |
d02b48c6 | 765 | return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i)); |
cf82191d BM |
766 | s->init_num += i; |
767 | if (s->msg_callback) | |
768 | s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */ | |
d02b48c6 RE |
769 | |
770 | /* type=buf[0]; */ | |
771 | /* type eq x509 */ | |
772 | if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION) | |
773 | { | |
774 | ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE); | |
775 | SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE); | |
776 | return(-1); | |
777 | } | |
d02b48c6 RE |
778 | |
779 | if ((s->cert == NULL) || | |
780 | (s->cert->key->x509 == NULL) || | |
781 | (s->cert->key->privatekey == NULL)) | |
782 | { | |
783 | s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE; | |
784 | } | |
785 | else | |
786 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C; | |
787 | } | |
788 | ||
cf82191d BM |
789 | cert_ch = buf + 2; |
790 | cert_ch_len = s->init_num - 2; | |
791 | ||
d02b48c6 RE |
792 | if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE) |
793 | { | |
794 | X509 *x509=NULL; | |
795 | EVP_PKEY *pkey=NULL; | |
796 | ||
797 | /* If we get an error we need to | |
798 | * ssl->rwstate=SSL_X509_LOOKUP; | |
799 | * return(error); | |
800 | * We should then be retried when things are ok and we | |
801 | * can get a cert or not */ | |
802 | ||
803 | i=0; | |
804 | if (s->ctx->client_cert_cb != NULL) | |
805 | { | |
806 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); | |
807 | } | |
808 | ||
809 | if (i < 0) | |
810 | { | |
811 | s->rwstate=SSL_X509_LOOKUP; | |
812 | return(-1); | |
813 | } | |
814 | s->rwstate=SSL_NOTHING; | |
815 | ||
816 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
817 | { | |
818 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C; | |
819 | if ( !SSL_use_certificate(s,x509) || | |
820 | !SSL_use_PrivateKey(s,pkey)) | |
821 | { | |
822 | i=0; | |
823 | } | |
824 | X509_free(x509); | |
825 | EVP_PKEY_free(pkey); | |
826 | } | |
827 | else if (i == 1) | |
828 | { | |
829 | if (x509 != NULL) X509_free(x509); | |
830 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
831 | SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
832 | i=0; | |
833 | } | |
834 | ||
835 | if (i == 0) | |
836 | { | |
837 | /* We have no client certificate to respond with | |
838 | * so send the correct error message back */ | |
839 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B; | |
840 | p=buf; | |
841 | *(p++)=SSL2_MT_ERROR; | |
842 | s2n(SSL2_PE_NO_CERTIFICATE,p); | |
843 | s->init_off=0; | |
844 | s->init_num=3; | |
845 | /* Write is done at the end */ | |
846 | } | |
847 | } | |
848 | ||
849 | if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B) | |
850 | { | |
851 | return(ssl2_do_write(s)); | |
852 | } | |
853 | ||
854 | if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C) | |
855 | { | |
856 | EVP_MD_CTX ctx; | |
857 | ||
858 | /* ok, now we calculate the checksum | |
859 | * do it first so we can reuse buf :-) */ | |
860 | p=buf; | |
dbad1690 | 861 | EVP_MD_CTX_init(&ctx); |
20d2186c | 862 | EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL); |
d02b48c6 | 863 | EVP_SignUpdate(&ctx,s->s2->key_material, |
54a656ef | 864 | s->s2->key_material_length); |
d02b48c6 | 865 | EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len); |
b56bce4f | 866 | n=i2d_X509(s->session->sess_cert->peer_key->x509,&p); |
d02b48c6 RE |
867 | EVP_SignUpdate(&ctx,buf,(unsigned int)n); |
868 | ||
869 | p=buf; | |
870 | d=p+6; | |
871 | *(p++)=SSL2_MT_CLIENT_CERTIFICATE; | |
872 | *(p++)=SSL2_CT_X509_CERTIFICATE; | |
873 | n=i2d_X509(s->cert->key->x509,&d); | |
874 | s2n(n,p); | |
875 | ||
876 | if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey)) | |
877 | { | |
878 | /* this is not good. If things have failed it | |
879 | * means there so something wrong with the key. | |
657e60fa | 880 | * We will continue with a 0 length signature |
d02b48c6 RE |
881 | */ |
882 | } | |
dbad1690 | 883 | EVP_MD_CTX_cleanup(&ctx); |
d02b48c6 RE |
884 | s2n(n,p); |
885 | d+=n; | |
886 | ||
887 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D; | |
888 | s->init_num=d-buf; | |
889 | s->init_off=0; | |
890 | } | |
891 | /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */ | |
892 | return(ssl2_do_write(s)); | |
893 | } | |
894 | ||
6b691a5c | 895 | static int get_server_verify(SSL *s) |
d02b48c6 RE |
896 | { |
897 | unsigned char *p; | |
cf82191d | 898 | int i, n, len; |
d02b48c6 RE |
899 | |
900 | p=(unsigned char *)s->init_buf->data; | |
901 | if (s->state == SSL2_ST_GET_SERVER_VERIFY_A) | |
902 | { | |
2b90b1f3 BM |
903 | i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num); |
904 | if (i < (1-s->init_num)) | |
d02b48c6 | 905 | return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i)); |
cf82191d | 906 | s->init_num += i; |
d02b48c6 RE |
907 | |
908 | s->state= SSL2_ST_GET_SERVER_VERIFY_B; | |
d02b48c6 RE |
909 | if (*p != SSL2_MT_SERVER_VERIFY) |
910 | { | |
911 | if (p[0] != SSL2_MT_ERROR) | |
912 | { | |
913 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
914 | SSLerr(SSL_F_GET_SERVER_VERIFY, | |
915 | SSL_R_READ_WRONG_PACKET_TYPE); | |
916 | } | |
917 | else | |
2b90b1f3 BM |
918 | { |
919 | SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR); | |
920 | /* try to read the error message */ | |
921 | i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); | |
922 | return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); | |
923 | } | |
d02b48c6 RE |
924 | return(-1); |
925 | } | |
926 | } | |
927 | ||
928 | p=(unsigned char *)s->init_buf->data; | |
cf82191d BM |
929 | len = 1 + s->s2->challenge_length; |
930 | n = len - s->init_num; | |
931 | i = ssl2_read(s,(char *)&(p[s->init_num]),n); | |
932 | if (i < n) | |
d02b48c6 | 933 | return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i)); |
cf82191d BM |
934 | if (s->msg_callback) |
935 | s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */ | |
936 | p += 1; | |
937 | ||
27088131 | 938 | if (CRYPTO_memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0) |
d02b48c6 RE |
939 | { |
940 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
941 | SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT); | |
942 | return(-1); | |
943 | } | |
944 | return(1); | |
945 | } | |
946 | ||
6b691a5c | 947 | static int get_server_finished(SSL *s) |
d02b48c6 RE |
948 | { |
949 | unsigned char *buf; | |
950 | unsigned char *p; | |
cf82191d | 951 | int i, n, len; |
d02b48c6 RE |
952 | |
953 | buf=(unsigned char *)s->init_buf->data; | |
954 | p=buf; | |
955 | if (s->state == SSL2_ST_GET_SERVER_FINISHED_A) | |
956 | { | |
2b90b1f3 BM |
957 | i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num); |
958 | if (i < (1-s->init_num)) | |
d02b48c6 | 959 | return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i)); |
cf82191d BM |
960 | s->init_num += i; |
961 | ||
d02b48c6 RE |
962 | if (*p == SSL2_MT_REQUEST_CERTIFICATE) |
963 | { | |
964 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A; | |
965 | return(1); | |
966 | } | |
967 | else if (*p != SSL2_MT_SERVER_FINISHED) | |
968 | { | |
969 | if (p[0] != SSL2_MT_ERROR) | |
970 | { | |
971 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
972 | SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE); | |
973 | } | |
974 | else | |
2b90b1f3 | 975 | { |
d02b48c6 | 976 | SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR); |
2b90b1f3 BM |
977 | /* try to read the error message */ |
978 | i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); | |
979 | return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); | |
980 | } | |
d02b48c6 RE |
981 | return(-1); |
982 | } | |
cf82191d | 983 | s->state=SSL2_ST_GET_SERVER_FINISHED_B; |
d02b48c6 RE |
984 | } |
985 | ||
cf82191d BM |
986 | len = 1 + SSL2_SSL_SESSION_ID_LENGTH; |
987 | n = len - s->init_num; | |
988 | i = ssl2_read(s,(char *)&(buf[s->init_num]), n); | |
989 | if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */ | |
d02b48c6 | 990 | return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i)); |
cf82191d BM |
991 | s->init_num += i; |
992 | if (s->msg_callback) | |
993 | s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */ | |
d02b48c6 RE |
994 | |
995 | if (!s->hit) /* new session */ | |
996 | { | |
997 | /* new session-id */ | |
58964a49 RE |
998 | /* Make sure we were not trying to re-use an old SSL_SESSION |
999 | * or bad things can happen */ | |
1000 | /* ZZZZZZZZZZZZZ */ | |
d02b48c6 | 1001 | s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; |
21cde7a4 | 1002 | memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH); |
d02b48c6 RE |
1003 | } |
1004 | else | |
1005 | { | |
58964a49 | 1006 | if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG)) |
d02b48c6 | 1007 | { |
5574e0ed | 1008 | if ((s->session->session_id_length > sizeof s->session->session_id) |
8ec16ce7 | 1009 | || (0 != memcmp(buf + 1, s->session->session_id, |
5574e0ed | 1010 | (unsigned int)s->session->session_id_length))) |
d02b48c6 RE |
1011 | { |
1012 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); | |
1013 | SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT); | |
1014 | return(-1); | |
1015 | } | |
1016 | } | |
1017 | } | |
cf82191d | 1018 | s->state = SSL_ST_OK; |
d02b48c6 RE |
1019 | return(1); |
1020 | } | |
1021 | ||
1022 | /* loads in the certificate from the server */ | |
875a644a | 1023 | int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data) |
d02b48c6 | 1024 | { |
f73e07cf | 1025 | STACK_OF(X509) *sk=NULL; |
d02b48c6 | 1026 | EVP_PKEY *pkey=NULL; |
b56bce4f | 1027 | SESS_CERT *sc=NULL; |
d02b48c6 RE |
1028 | int i; |
1029 | X509 *x509=NULL; | |
1030 | int ret=0; | |
1031 | ||
1032 | x509=d2i_X509(NULL,&data,(long)len); | |
1033 | if (x509 == NULL) | |
1034 | { | |
1035 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB); | |
1036 | goto err; | |
1037 | } | |
1038 | ||
f73e07cf | 1039 | if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509)) |
d02b48c6 RE |
1040 | { |
1041 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1042 | goto err; | |
1043 | } | |
1044 | ||
1045 | i=ssl_verify_cert_chain(s,sk); | |
1046 | ||
a00c3c40 | 1047 | if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)) |
d02b48c6 RE |
1048 | { |
1049 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
1050 | goto err; | |
1051 | } | |
1fab73ac | 1052 | ERR_clear_error(); /* but we keep s->verify_result */ |
0dd2254d | 1053 | s->session->verify_result = s->verify_result; |
d02b48c6 | 1054 | |
b56bce4f BM |
1055 | /* server's cert for this session */ |
1056 | sc=ssl_sess_cert_new(); | |
1057 | if (sc == NULL) | |
d02b48c6 RE |
1058 | { |
1059 | ret= -1; | |
1060 | goto err; | |
1061 | } | |
b56bce4f BM |
1062 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
1063 | s->session->sess_cert=sc; | |
d02b48c6 | 1064 | |
b56bce4f BM |
1065 | sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509; |
1066 | sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]); | |
d02b48c6 RE |
1067 | |
1068 | pkey=X509_get_pubkey(x509); | |
1069 | x509=NULL; | |
1070 | if (pkey == NULL) | |
1071 | { | |
1072 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY); | |
1073 | goto err; | |
1074 | } | |
1075 | if (pkey->type != EVP_PKEY_RSA) | |
1076 | { | |
1077 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA); | |
1078 | goto err; | |
1079 | } | |
1080 | ||
b56bce4f | 1081 | if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE)) |
d02b48c6 RE |
1082 | goto err; |
1083 | ret=1; | |
1084 | err: | |
f73e07cf | 1085 | sk_X509_free(sk); |
a8236c8c DSH |
1086 | X509_free(x509); |
1087 | EVP_PKEY_free(pkey); | |
d02b48c6 RE |
1088 | return(ret); |
1089 | } | |
1090 | ||
b56bce4f | 1091 | static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from, |
6b691a5c | 1092 | unsigned char *to, int padding) |
d02b48c6 RE |
1093 | { |
1094 | EVP_PKEY *pkey=NULL; | |
1095 | int i= -1; | |
1096 | ||
b56bce4f BM |
1097 | if ((sc == NULL) || (sc->peer_key->x509 == NULL) || |
1098 | ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL)) | |
d02b48c6 RE |
1099 | { |
1100 | SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY); | |
1101 | return(-1); | |
1102 | } | |
1103 | if (pkey->type != EVP_PKEY_RSA) | |
1104 | { | |
1105 | SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA); | |
1106 | goto end; | |
1107 | } | |
1108 | ||
1109 | /* we have the public key */ | |
1110 | i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding); | |
1111 | if (i < 0) | |
1112 | SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB); | |
1113 | end: | |
a8236c8c | 1114 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1115 | return(i); |
1116 | } | |
bc36ee62 | 1117 | #else /* !OPENSSL_NO_SSL2 */ |
752d706a BL |
1118 | |
1119 | # if PEDANTIC | |
1120 | static void *dummy=&dummy; | |
1121 | # endif | |
1122 | ||
79df9d62 | 1123 | #endif |