1/* ssl/s2_srvr.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * 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 */
111
112#include "ssl_locl.h"
113#ifndef OPENSSL_NO_SSL2
114#include <stdio.h>
115#include <openssl/bio.h>
116#include <openssl/rand.h>
117#include <openssl/objects.h>
118#include <openssl/evp.h>
119
120static SSL_METHOD *ssl2_get_server_method(int ver);
121static int get_client_master_key(SSL *s);
122static int get_client_hello(SSL *s);
123static int server_hello(SSL *s);
124static int get_client_finished(SSL *s);
125static int server_verify(SSL *s);
126static int server_finish(SSL *s);
127static int request_certificate(SSL *s);
128static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from,
129 unsigned char *to,int padding);
130#define BREAK break
131
132static SSL_METHOD *ssl2_get_server_method(int ver)
133 {
134 if (ver == SSL2_VERSION)
135 return(SSLv2_server_method());
136 else
137 return(NULL);
138 }
139
| 1/* ssl/s2_srvr.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * 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 */
111
112#include "ssl_locl.h"
113#ifndef OPENSSL_NO_SSL2
114#include <stdio.h>
115#include <openssl/bio.h>
116#include <openssl/rand.h>
117#include <openssl/objects.h>
118#include <openssl/evp.h>
119
120static SSL_METHOD *ssl2_get_server_method(int ver);
121static int get_client_master_key(SSL *s);
122static int get_client_hello(SSL *s);
123static int server_hello(SSL *s);
124static int get_client_finished(SSL *s);
125static int server_verify(SSL *s);
126static int server_finish(SSL *s);
127static int request_certificate(SSL *s);
128static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from,
129 unsigned char *to,int padding);
130#define BREAK break
131
132static SSL_METHOD *ssl2_get_server_method(int ver)
133 {
134 if (ver == SSL2_VERSION)
135 return(SSLv2_server_method());
136 else
137 return(NULL);
138 }
139
|
140SSL_METHOD *SSLv2_server_method(void)
141 {
142 static int init=1;
143 static SSL_METHOD SSLv2_server_data;
| 140IMPLEMENT_ssl2_meth_func(SSLv2_server_method,
141 ssl2_accept,
142 ssl_undefined_function,
143 ssl2_get_server_method)
|
144
| 144
|
145 if (init)
146 {
147 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
148
149 if (init)
150 {
151 memcpy((char *)&SSLv2_server_data,(char *)sslv2_base_method(),
152 sizeof(SSL_METHOD));
153 SSLv2_server_data.ssl_accept=ssl2_accept;
154 SSLv2_server_data.get_ssl_method=ssl2_get_server_method;
155 init=0;
156 }
157
158 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
159 }
160 return(&SSLv2_server_data);
161 }
162
| |
163int ssl2_accept(SSL *s)
164 {
| 145int ssl2_accept(SSL *s)
146 {
|
165 unsigned long l=time(NULL);
| 147 unsigned long l=(unsigned long)time(NULL);
|
166 BUF_MEM *buf=NULL;
167 int ret= -1;
168 long num1;
169 void (*cb)(const SSL *ssl,int type,int val)=NULL;
170 int new_state,state;
171
172 RAND_add(&l,sizeof(l),0);
173 ERR_clear_error();
174 clear_sys_error();
175
176 if (s->info_callback != NULL)
177 cb=s->info_callback;
178 else if (s->ctx->info_callback != NULL)
179 cb=s->ctx->info_callback;
180
181 /* init things to blank */
182 s->in_handshake++;
183 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
184
185 if (s->cert == NULL)
186 {
187 SSLerr(SSL_F_SSL2_ACCEPT,SSL_R_NO_CERTIFICATE_SET);
188 return(-1);
189 }
190
191 clear_sys_error();
192 for (;;)
193 {
194 state=s->state;
195
196 switch (s->state)
197 {
198 case SSL_ST_BEFORE:
199 case SSL_ST_ACCEPT:
200 case SSL_ST_BEFORE|SSL_ST_ACCEPT:
201 case SSL_ST_OK|SSL_ST_ACCEPT:
202
203 s->server=1;
204 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
205
206 s->version=SSL2_VERSION;
207 s->type=SSL_ST_ACCEPT;
208
209 buf=s->init_buf;
210 if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
211 { ret= -1; goto end; }
212 if (!BUF_MEM_grow(buf,(int)
213 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
214 { ret= -1; goto end; }
215 s->init_buf=buf;
216 s->init_num=0;
217 s->ctx->stats.sess_accept++;
218 s->handshake_func=ssl2_accept;
219 s->state=SSL2_ST_GET_CLIENT_HELLO_A;
220 BREAK;
221
222 case SSL2_ST_GET_CLIENT_HELLO_A:
223 case SSL2_ST_GET_CLIENT_HELLO_B:
224 case SSL2_ST_GET_CLIENT_HELLO_C:
225 s->shutdown=0;
226 ret=get_client_hello(s);
227 if (ret <= 0) goto end;
228 s->init_num=0;
229 s->state=SSL2_ST_SEND_SERVER_HELLO_A;
230 BREAK;
231
232 case SSL2_ST_SEND_SERVER_HELLO_A:
233 case SSL2_ST_SEND_SERVER_HELLO_B:
234 ret=server_hello(s);
235 if (ret <= 0) goto end;
236 s->init_num=0;
237 if (!s->hit)
238 {
239 s->state=SSL2_ST_GET_CLIENT_MASTER_KEY_A;
240 BREAK;
241 }
242 else
243 {
244 s->state=SSL2_ST_SERVER_START_ENCRYPTION;
245 BREAK;
246 }
247 case SSL2_ST_GET_CLIENT_MASTER_KEY_A:
248 case SSL2_ST_GET_CLIENT_MASTER_KEY_B:
249 ret=get_client_master_key(s);
250 if (ret <= 0) goto end;
251 s->init_num=0;
252 s->state=SSL2_ST_SERVER_START_ENCRYPTION;
253 BREAK;
254
255 case SSL2_ST_SERVER_START_ENCRYPTION:
256 /* Ok we how have sent all the stuff needed to
257 * start encrypting, the next packet back will
258 * be encrypted. */
259 if (!ssl2_enc_init(s,0))
260 { ret= -1; goto end; }
261 s->s2->clear_text=0;
262 s->state=SSL2_ST_SEND_SERVER_VERIFY_A;
263 BREAK;
264
265 case SSL2_ST_SEND_SERVER_VERIFY_A:
266 case SSL2_ST_SEND_SERVER_VERIFY_B:
267 ret=server_verify(s);
268 if (ret <= 0) goto end;
269 s->init_num=0;
270 if (s->hit)
271 {
272 /* If we are in here, we have been
273 * buffering the output, so we need to
274 * flush it and remove buffering from
275 * future traffic */
276 s->state=SSL2_ST_SEND_SERVER_VERIFY_C;
277 BREAK;
278 }
279 else
280 {
281 s->state=SSL2_ST_GET_CLIENT_FINISHED_A;
282 break;
283 }
284
285 case SSL2_ST_SEND_SERVER_VERIFY_C:
286 /* get the number of bytes to write */
287 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
288 if (num1 != 0)
289 {
290 s->rwstate=SSL_WRITING;
291 num1=BIO_flush(s->wbio);
292 if (num1 <= 0) { ret= -1; goto end; }
293 s->rwstate=SSL_NOTHING;
294 }
295
296 /* flushed and now remove buffering */
297 s->wbio=BIO_pop(s->wbio);
298
299 s->state=SSL2_ST_GET_CLIENT_FINISHED_A;
300 BREAK;
301
302 case SSL2_ST_GET_CLIENT_FINISHED_A:
303 case SSL2_ST_GET_CLIENT_FINISHED_B:
304 ret=get_client_finished(s);
305 if (ret <= 0)
306 goto end;
307 s->init_num=0;
308 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_A;
309 BREAK;
310
311 case SSL2_ST_SEND_REQUEST_CERTIFICATE_A:
312 case SSL2_ST_SEND_REQUEST_CERTIFICATE_B:
313 case SSL2_ST_SEND_REQUEST_CERTIFICATE_C:
314 case SSL2_ST_SEND_REQUEST_CERTIFICATE_D:
315 /* don't do a 'request certificate' if we
316 * don't want to, or we already have one, and
317 * we only want to do it once. */
318 if (!(s->verify_mode & SSL_VERIFY_PEER) ||
319 ((s->session->peer != NULL) &&
320 (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)))
321 {
322 s->state=SSL2_ST_SEND_SERVER_FINISHED_A;
323 break;
324 }
325 else
326 {
327 ret=request_certificate(s);
328 if (ret <= 0) goto end;
329 s->init_num=0;
330 s->state=SSL2_ST_SEND_SERVER_FINISHED_A;
331 }
332 BREAK;
333
334 case SSL2_ST_SEND_SERVER_FINISHED_A:
335 case SSL2_ST_SEND_SERVER_FINISHED_B:
336 ret=server_finish(s);
337 if (ret <= 0) goto end;
338 s->init_num=0;
339 s->state=SSL_ST_OK;
340 break;
341
342 case SSL_ST_OK:
343 BUF_MEM_free(s->init_buf);
344 ssl_free_wbio_buffer(s);
345 s->init_buf=NULL;
346 s->init_num=0;
347 /* ERR_clear_error();*/
348
349 ssl_update_cache(s,SSL_SESS_CACHE_SERVER);
350
351 s->ctx->stats.sess_accept_good++;
352 /* s->server=1; */
353 ret=1;
354
355 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
356
357 goto end;
358 /* BREAK; */
359
360 default:
361 SSLerr(SSL_F_SSL2_ACCEPT,SSL_R_UNKNOWN_STATE);
362 ret= -1;
363 goto end;
364 /* BREAK; */
365 }
366
367 if ((cb != NULL) && (s->state != state))
368 {
369 new_state=s->state;
370 s->state=state;
371 cb(s,SSL_CB_ACCEPT_LOOP,1);
372 s->state=new_state;
373 }
374 }
375end:
376 s->in_handshake--;
377 if (cb != NULL)
378 cb(s,SSL_CB_ACCEPT_EXIT,ret);
379 return(ret);
380 }
381
382static int get_client_master_key(SSL *s)
383 {
384 int is_export,i,n,keya,ek;
385 unsigned long len;
386 unsigned char *p;
387 SSL_CIPHER *cp;
388 const EVP_CIPHER *c;
389 const EVP_MD *md;
390
391 p=(unsigned char *)s->init_buf->data;
392 if (s->state == SSL2_ST_GET_CLIENT_MASTER_KEY_A)
393 {
394 i=ssl2_read(s,(char *)&(p[s->init_num]),10-s->init_num);
395
396 if (i < (10-s->init_num))
397 return(ssl2_part_read(s,SSL_F_GET_CLIENT_MASTER_KEY,i));
398 s->init_num = 10;
399
400 if (*(p++) != SSL2_MT_CLIENT_MASTER_KEY)
401 {
402 if (p[-1] != SSL2_MT_ERROR)
403 {
404 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
405 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_READ_WRONG_PACKET_TYPE);
406 }
407 else
408 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_PEER_ERROR);
409 return(-1);
410 }
411
412 cp=ssl2_get_cipher_by_char(p);
413 if (cp == NULL)
414 {
415 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
416 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_NO_CIPHER_MATCH);
417 return(-1);
418 }
419 s->session->cipher= cp;
420
421 p+=3;
422 n2s(p,i); s->s2->tmp.clear=i;
423 n2s(p,i); s->s2->tmp.enc=i;
424 n2s(p,i); s->session->key_arg_length=i;
425 if(s->session->key_arg_length > SSL_MAX_KEY_ARG_LENGTH)
426 {
427 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
428 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_KEY_ARG_TOO_LONG);
429 return -1;
430 }
431 s->state=SSL2_ST_GET_CLIENT_MASTER_KEY_B;
432 }
433
434 /* SSL2_ST_GET_CLIENT_MASTER_KEY_B */
435 p=(unsigned char *)s->init_buf->data;
436 if (s->init_buf->length < SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
437 {
438 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
439 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
440 return -1;
441 }
442 keya=s->session->key_arg_length;
443 len = 10 + (unsigned long)s->s2->tmp.clear + (unsigned long)s->s2->tmp.enc + (unsigned long)keya;
444 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
445 {
446 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
447 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_MESSAGE_TOO_LONG);
448 return -1;
449 }
450 n = (int)len - s->init_num;
451 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
452 if (i != n) return(ssl2_part_read(s,SSL_F_GET_CLIENT_MASTER_KEY,i));
453 if (s->msg_callback)
454 s->msg_callback(0, s->version, 0, p, (size_t)len, s, s->msg_callback_arg); /* CLIENT-MASTER-KEY */
455 p += 10;
456
457 memcpy(s->session->key_arg,&(p[s->s2->tmp.clear+s->s2->tmp.enc]),
458 (unsigned int)keya);
459
460 if (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL)
461 {
462 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
463 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_NO_PRIVATEKEY);
464 return(-1);
465 }
466 i=ssl_rsa_private_decrypt(s->cert,s->s2->tmp.enc,
467 &(p[s->s2->tmp.clear]),&(p[s->s2->tmp.clear]),
468 (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
469
470 is_export=SSL_C_IS_EXPORT(s->session->cipher);
471
472 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
473 {
474 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
475 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
476 return(0);
477 }
478
479 if (s->session->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
480 {
481 is_export=1;
482 ek=8;
483 }
484 else
485 ek=5;
486
487 /* bad decrypt */
488#if 1
489 /* If a bad decrypt, continue with protocol but with a
490 * random master secret (Bleichenbacher attack) */
491 if ((i < 0) ||
492 ((!is_export && (i != EVP_CIPHER_key_length(c)))
493 || (is_export && ((i != ek) || (s->s2->tmp.clear+(unsigned int)i !=
494 (unsigned int)EVP_CIPHER_key_length(c))))))
495 {
496 ERR_clear_error();
497 if (is_export)
498 i=ek;
499 else
500 i=EVP_CIPHER_key_length(c);
| 148 BUF_MEM *buf=NULL;
149 int ret= -1;
150 long num1;
151 void (*cb)(const SSL *ssl,int type,int val)=NULL;
152 int new_state,state;
153
154 RAND_add(&l,sizeof(l),0);
155 ERR_clear_error();
156 clear_sys_error();
157
158 if (s->info_callback != NULL)
159 cb=s->info_callback;
160 else if (s->ctx->info_callback != NULL)
161 cb=s->ctx->info_callback;
162
163 /* init things to blank */
164 s->in_handshake++;
165 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
166
167 if (s->cert == NULL)
168 {
169 SSLerr(SSL_F_SSL2_ACCEPT,SSL_R_NO_CERTIFICATE_SET);
170 return(-1);
171 }
172
173 clear_sys_error();
174 for (;;)
175 {
176 state=s->state;
177
178 switch (s->state)
179 {
180 case SSL_ST_BEFORE:
181 case SSL_ST_ACCEPT:
182 case SSL_ST_BEFORE|SSL_ST_ACCEPT:
183 case SSL_ST_OK|SSL_ST_ACCEPT:
184
185 s->server=1;
186 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
187
188 s->version=SSL2_VERSION;
189 s->type=SSL_ST_ACCEPT;
190
191 buf=s->init_buf;
192 if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
193 { ret= -1; goto end; }
194 if (!BUF_MEM_grow(buf,(int)
195 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
196 { ret= -1; goto end; }
197 s->init_buf=buf;
198 s->init_num=0;
199 s->ctx->stats.sess_accept++;
200 s->handshake_func=ssl2_accept;
201 s->state=SSL2_ST_GET_CLIENT_HELLO_A;
202 BREAK;
203
204 case SSL2_ST_GET_CLIENT_HELLO_A:
205 case SSL2_ST_GET_CLIENT_HELLO_B:
206 case SSL2_ST_GET_CLIENT_HELLO_C:
207 s->shutdown=0;
208 ret=get_client_hello(s);
209 if (ret <= 0) goto end;
210 s->init_num=0;
211 s->state=SSL2_ST_SEND_SERVER_HELLO_A;
212 BREAK;
213
214 case SSL2_ST_SEND_SERVER_HELLO_A:
215 case SSL2_ST_SEND_SERVER_HELLO_B:
216 ret=server_hello(s);
217 if (ret <= 0) goto end;
218 s->init_num=0;
219 if (!s->hit)
220 {
221 s->state=SSL2_ST_GET_CLIENT_MASTER_KEY_A;
222 BREAK;
223 }
224 else
225 {
226 s->state=SSL2_ST_SERVER_START_ENCRYPTION;
227 BREAK;
228 }
229 case SSL2_ST_GET_CLIENT_MASTER_KEY_A:
230 case SSL2_ST_GET_CLIENT_MASTER_KEY_B:
231 ret=get_client_master_key(s);
232 if (ret <= 0) goto end;
233 s->init_num=0;
234 s->state=SSL2_ST_SERVER_START_ENCRYPTION;
235 BREAK;
236
237 case SSL2_ST_SERVER_START_ENCRYPTION:
238 /* Ok we how have sent all the stuff needed to
239 * start encrypting, the next packet back will
240 * be encrypted. */
241 if (!ssl2_enc_init(s,0))
242 { ret= -1; goto end; }
243 s->s2->clear_text=0;
244 s->state=SSL2_ST_SEND_SERVER_VERIFY_A;
245 BREAK;
246
247 case SSL2_ST_SEND_SERVER_VERIFY_A:
248 case SSL2_ST_SEND_SERVER_VERIFY_B:
249 ret=server_verify(s);
250 if (ret <= 0) goto end;
251 s->init_num=0;
252 if (s->hit)
253 {
254 /* If we are in here, we have been
255 * buffering the output, so we need to
256 * flush it and remove buffering from
257 * future traffic */
258 s->state=SSL2_ST_SEND_SERVER_VERIFY_C;
259 BREAK;
260 }
261 else
262 {
263 s->state=SSL2_ST_GET_CLIENT_FINISHED_A;
264 break;
265 }
266
267 case SSL2_ST_SEND_SERVER_VERIFY_C:
268 /* get the number of bytes to write */
269 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
270 if (num1 != 0)
271 {
272 s->rwstate=SSL_WRITING;
273 num1=BIO_flush(s->wbio);
274 if (num1 <= 0) { ret= -1; goto end; }
275 s->rwstate=SSL_NOTHING;
276 }
277
278 /* flushed and now remove buffering */
279 s->wbio=BIO_pop(s->wbio);
280
281 s->state=SSL2_ST_GET_CLIENT_FINISHED_A;
282 BREAK;
283
284 case SSL2_ST_GET_CLIENT_FINISHED_A:
285 case SSL2_ST_GET_CLIENT_FINISHED_B:
286 ret=get_client_finished(s);
287 if (ret <= 0)
288 goto end;
289 s->init_num=0;
290 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_A;
291 BREAK;
292
293 case SSL2_ST_SEND_REQUEST_CERTIFICATE_A:
294 case SSL2_ST_SEND_REQUEST_CERTIFICATE_B:
295 case SSL2_ST_SEND_REQUEST_CERTIFICATE_C:
296 case SSL2_ST_SEND_REQUEST_CERTIFICATE_D:
297 /* don't do a 'request certificate' if we
298 * don't want to, or we already have one, and
299 * we only want to do it once. */
300 if (!(s->verify_mode & SSL_VERIFY_PEER) ||
301 ((s->session->peer != NULL) &&
302 (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)))
303 {
304 s->state=SSL2_ST_SEND_SERVER_FINISHED_A;
305 break;
306 }
307 else
308 {
309 ret=request_certificate(s);
310 if (ret <= 0) goto end;
311 s->init_num=0;
312 s->state=SSL2_ST_SEND_SERVER_FINISHED_A;
313 }
314 BREAK;
315
316 case SSL2_ST_SEND_SERVER_FINISHED_A:
317 case SSL2_ST_SEND_SERVER_FINISHED_B:
318 ret=server_finish(s);
319 if (ret <= 0) goto end;
320 s->init_num=0;
321 s->state=SSL_ST_OK;
322 break;
323
324 case SSL_ST_OK:
325 BUF_MEM_free(s->init_buf);
326 ssl_free_wbio_buffer(s);
327 s->init_buf=NULL;
328 s->init_num=0;
329 /* ERR_clear_error();*/
330
331 ssl_update_cache(s,SSL_SESS_CACHE_SERVER);
332
333 s->ctx->stats.sess_accept_good++;
334 /* s->server=1; */
335 ret=1;
336
337 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
338
339 goto end;
340 /* BREAK; */
341
342 default:
343 SSLerr(SSL_F_SSL2_ACCEPT,SSL_R_UNKNOWN_STATE);
344 ret= -1;
345 goto end;
346 /* BREAK; */
347 }
348
349 if ((cb != NULL) && (s->state != state))
350 {
351 new_state=s->state;
352 s->state=state;
353 cb(s,SSL_CB_ACCEPT_LOOP,1);
354 s->state=new_state;
355 }
356 }
357end:
358 s->in_handshake--;
359 if (cb != NULL)
360 cb(s,SSL_CB_ACCEPT_EXIT,ret);
361 return(ret);
362 }
363
364static int get_client_master_key(SSL *s)
365 {
366 int is_export,i,n,keya,ek;
367 unsigned long len;
368 unsigned char *p;
369 SSL_CIPHER *cp;
370 const EVP_CIPHER *c;
371 const EVP_MD *md;
372
373 p=(unsigned char *)s->init_buf->data;
374 if (s->state == SSL2_ST_GET_CLIENT_MASTER_KEY_A)
375 {
376 i=ssl2_read(s,(char *)&(p[s->init_num]),10-s->init_num);
377
378 if (i < (10-s->init_num))
379 return(ssl2_part_read(s,SSL_F_GET_CLIENT_MASTER_KEY,i));
380 s->init_num = 10;
381
382 if (*(p++) != SSL2_MT_CLIENT_MASTER_KEY)
383 {
384 if (p[-1] != SSL2_MT_ERROR)
385 {
386 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
387 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_READ_WRONG_PACKET_TYPE);
388 }
389 else
390 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_PEER_ERROR);
391 return(-1);
392 }
393
394 cp=ssl2_get_cipher_by_char(p);
395 if (cp == NULL)
396 {
397 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
398 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_NO_CIPHER_MATCH);
399 return(-1);
400 }
401 s->session->cipher= cp;
402
403 p+=3;
404 n2s(p,i); s->s2->tmp.clear=i;
405 n2s(p,i); s->s2->tmp.enc=i;
406 n2s(p,i); s->session->key_arg_length=i;
407 if(s->session->key_arg_length > SSL_MAX_KEY_ARG_LENGTH)
408 {
409 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
410 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_KEY_ARG_TOO_LONG);
411 return -1;
412 }
413 s->state=SSL2_ST_GET_CLIENT_MASTER_KEY_B;
414 }
415
416 /* SSL2_ST_GET_CLIENT_MASTER_KEY_B */
417 p=(unsigned char *)s->init_buf->data;
418 if (s->init_buf->length < SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
419 {
420 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
421 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
422 return -1;
423 }
424 keya=s->session->key_arg_length;
425 len = 10 + (unsigned long)s->s2->tmp.clear + (unsigned long)s->s2->tmp.enc + (unsigned long)keya;
426 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
427 {
428 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
429 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_MESSAGE_TOO_LONG);
430 return -1;
431 }
432 n = (int)len - s->init_num;
433 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
434 if (i != n) return(ssl2_part_read(s,SSL_F_GET_CLIENT_MASTER_KEY,i));
435 if (s->msg_callback)
436 s->msg_callback(0, s->version, 0, p, (size_t)len, s, s->msg_callback_arg); /* CLIENT-MASTER-KEY */
437 p += 10;
438
439 memcpy(s->session->key_arg,&(p[s->s2->tmp.clear+s->s2->tmp.enc]),
440 (unsigned int)keya);
441
442 if (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL)
443 {
444 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
445 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_NO_PRIVATEKEY);
446 return(-1);
447 }
448 i=ssl_rsa_private_decrypt(s->cert,s->s2->tmp.enc,
449 &(p[s->s2->tmp.clear]),&(p[s->s2->tmp.clear]),
450 (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
451
452 is_export=SSL_C_IS_EXPORT(s->session->cipher);
453
454 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
455 {
456 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
457 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
458 return(0);
459 }
460
461 if (s->session->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
462 {
463 is_export=1;
464 ek=8;
465 }
466 else
467 ek=5;
468
469 /* bad decrypt */
470#if 1
471 /* If a bad decrypt, continue with protocol but with a
472 * random master secret (Bleichenbacher attack) */
473 if ((i < 0) ||
474 ((!is_export && (i != EVP_CIPHER_key_length(c)))
475 || (is_export && ((i != ek) || (s->s2->tmp.clear+(unsigned int)i !=
476 (unsigned int)EVP_CIPHER_key_length(c))))))
477 {
478 ERR_clear_error();
479 if (is_export)
480 i=ek;
481 else
482 i=EVP_CIPHER_key_length(c);
|
501 if(RAND_pseudo_bytes(p,i) <= 0)
502 return 0;
| 483 if (RAND_pseudo_bytes(p,i) <= 0)
484 return 0;
|
503 }
504#else
505 if (i < 0)
506 {
507 error=1;
508 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_BAD_RSA_DECRYPT);
509 }
510 /* incorrect number of key bytes for non export cipher */
511 else if ((!is_export && (i != EVP_CIPHER_key_length(c)))
512 || (is_export && ((i != ek) || (s->s2->tmp.clear+i !=
513 EVP_CIPHER_key_length(c)))))
514 {
515 error=1;
516 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_WRONG_NUMBER_OF_KEY_BITS);
517 }
518 if (error)
519 {
520 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
521 return(-1);
522 }
523#endif
524
525 if (is_export) i+=s->s2->tmp.clear;
526
527 if (i > SSL_MAX_MASTER_KEY_LENGTH)
528 {
529 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
530 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
531 return -1;
532 }
533 s->session->master_key_length=i;
534 memcpy(s->session->master_key,p,(unsigned int)i);
535 return(1);
536 }
537
538static int get_client_hello(SSL *s)
539 {
540 int i,n;
541 unsigned long len;
542 unsigned char *p;
543 STACK_OF(SSL_CIPHER) *cs; /* a stack of SSL_CIPHERS */
544 STACK_OF(SSL_CIPHER) *cl; /* the ones we want to use */
545 STACK_OF(SSL_CIPHER) *prio, *allow;
546 int z;
547
548 /* This is a bit of a hack to check for the correct packet
549 * type the first time round. */
550 if (s->state == SSL2_ST_GET_CLIENT_HELLO_A)
551 {
552 s->first_packet=1;
553 s->state=SSL2_ST_GET_CLIENT_HELLO_B;
554 }
555
556 p=(unsigned char *)s->init_buf->data;
557 if (s->state == SSL2_ST_GET_CLIENT_HELLO_B)
558 {
559 i=ssl2_read(s,(char *)&(p[s->init_num]),9-s->init_num);
560 if (i < (9-s->init_num))
561 return(ssl2_part_read(s,SSL_F_GET_CLIENT_HELLO,i));
562 s->init_num = 9;
563
564 if (*(p++) != SSL2_MT_CLIENT_HELLO)
565 {
566 if (p[-1] != SSL2_MT_ERROR)
567 {
568 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
569 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_READ_WRONG_PACKET_TYPE);
570 }
571 else
572 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_PEER_ERROR);
573 return(-1);
574 }
575 n2s(p,i);
576 if (i < s->version) s->version=i;
577 n2s(p,i); s->s2->tmp.cipher_spec_length=i;
578 n2s(p,i); s->s2->tmp.session_id_length=i;
579 n2s(p,i); s->s2->challenge_length=i;
580 if ( (i < SSL2_MIN_CHALLENGE_LENGTH) ||
581 (i > SSL2_MAX_CHALLENGE_LENGTH))
582 {
583 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
584 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_INVALID_CHALLENGE_LENGTH);
585 return(-1);
586 }
587 s->state=SSL2_ST_GET_CLIENT_HELLO_C;
588 }
589
590 /* SSL2_ST_GET_CLIENT_HELLO_C */
591 p=(unsigned char *)s->init_buf->data;
592 len = 9 + (unsigned long)s->s2->tmp.cipher_spec_length + (unsigned long)s->s2->challenge_length + (unsigned long)s->s2->tmp.session_id_length;
593 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
594 {
595 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
596 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_MESSAGE_TOO_LONG);
597 return -1;
598 }
599 n = (int)len - s->init_num;
600 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
601 if (i != n) return(ssl2_part_read(s,SSL_F_GET_CLIENT_HELLO,i));
602 if (s->msg_callback)
603 s->msg_callback(0, s->version, 0, p, (size_t)len, s, s->msg_callback_arg); /* CLIENT-HELLO */
604 p += 9;
605
606 /* get session-id before cipher stuff so we can get out session
607 * structure if it is cached */
608 /* session-id */
609 if ((s->s2->tmp.session_id_length != 0) &&
610 (s->s2->tmp.session_id_length != SSL2_SSL_SESSION_ID_LENGTH))
611 {
612 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
613 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_BAD_SSL_SESSION_ID_LENGTH);
614 return(-1);
615 }
616
617 if (s->s2->tmp.session_id_length == 0)
618 {
619 if (!ssl_get_new_session(s,1))
620 {
621 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
622 return(-1);
623 }
624 }
625 else
626 {
627 i=ssl_get_prev_session(s,&(p[s->s2->tmp.cipher_spec_length]),
628 s->s2->tmp.session_id_length);
629 if (i == 1)
630 { /* previous session */
631 s->hit=1;
632 }
633 else if (i == -1)
634 {
635 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
636 return(-1);
637 }
638 else
639 {
640 if (s->cert == NULL)
641 {
642 ssl2_return_error(s,SSL2_PE_NO_CERTIFICATE);
643 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_NO_CERTIFICATE_SET);
644 return(-1);
645 }
646
647 if (!ssl_get_new_session(s,1))
648 {
649 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
650 return(-1);
651 }
652 }
653 }
654
655 if (!s->hit)
656 {
657 cs=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.cipher_spec_length,
658 &s->session->ciphers);
659 if (cs == NULL) goto mem_err;
660
661 cl=SSL_get_ciphers(s);
662
663 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
664 {
665 prio=sk_SSL_CIPHER_dup(cl);
666 if (prio == NULL) goto mem_err;
667 allow = cs;
668 }
669 else
670 {
671 prio = cs;
672 allow = cl;
673 }
674 for (z=0; z<sk_SSL_CIPHER_num(prio); z++)
675 {
676 if (sk_SSL_CIPHER_find(allow,sk_SSL_CIPHER_value(prio,z)) < 0)
677 {
678 sk_SSL_CIPHER_delete(prio,z);
679 z--;
680 }
681 }
682 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
683 {
684 sk_SSL_CIPHER_free(s->session->ciphers);
685 s->session->ciphers = prio;
686 }
687 /* s->session->ciphers should now have a list of
688 * ciphers that are on both the client and server.
689 * This list is ordered by the order the client sent
690 * the ciphers or in the order of the server's preference
691 * if SSL_OP_CIPHER_SERVER_PREFERENCE was set.
692 */
693 }
694 p+=s->s2->tmp.cipher_spec_length;
695 /* done cipher selection */
696
697 /* session id extracted already */
698 p+=s->s2->tmp.session_id_length;
699
700 /* challenge */
701 if (s->s2->challenge_length > sizeof s->s2->challenge)
702 {
703 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
704 SSLerr(SSL_F_GET_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
705 return -1;
706 }
707 memcpy(s->s2->challenge,p,(unsigned int)s->s2->challenge_length);
708 return(1);
709mem_err:
710 SSLerr(SSL_F_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE);
711 return(0);
712 }
713
714static int server_hello(SSL *s)
715 {
716 unsigned char *p,*d;
717 int n,hit;
718 STACK_OF(SSL_CIPHER) *sk;
719
720 p=(unsigned char *)s->init_buf->data;
721 if (s->state == SSL2_ST_SEND_SERVER_HELLO_A)
722 {
723 d=p+11;
724 *(p++)=SSL2_MT_SERVER_HELLO; /* type */
725 hit=s->hit;
726 *(p++)=(unsigned char)hit;
727#if 1
728 if (!hit)
729 {
730 if (s->session->sess_cert != NULL)
731 /* This can't really happen because get_client_hello
732 * has called ssl_get_new_session, which does not set
733 * sess_cert. */
734 ssl_sess_cert_free(s->session->sess_cert);
735 s->session->sess_cert = ssl_sess_cert_new();
736 if (s->session->sess_cert == NULL)
737 {
738 SSLerr(SSL_F_SERVER_HELLO, ERR_R_MALLOC_FAILURE);
739 return(-1);
740 }
741 }
742 /* If 'hit' is set, then s->sess_cert may be non-NULL or NULL,
743 * depending on whether it survived in the internal cache
744 * or was retrieved from an external cache.
745 * If it is NULL, we cannot put any useful data in it anyway,
746 * so we don't touch it.
747 */
748
749#else /* That's what used to be done when cert_st and sess_cert_st were
750 * the same. */
751 if (!hit)
752 { /* else add cert to session */
753 CRYPTO_add(&s->cert->references,1,CRYPTO_LOCK_SSL_CERT);
754 if (s->session->sess_cert != NULL)
755 ssl_cert_free(s->session->sess_cert);
756 s->session->sess_cert=s->cert;
757 }
758 else /* We have a session id-cache hit, if the
759 * session-id has no certificate listed against
760 * the 'cert' structure, grab the 'old' one
761 * listed against the SSL connection */
762 {
763 if (s->session->sess_cert == NULL)
764 {
765 CRYPTO_add(&s->cert->references,1,
766 CRYPTO_LOCK_SSL_CERT);
767 s->session->sess_cert=s->cert;
768 }
769 }
770#endif
771
772 if (s->cert == NULL)
773 {
774 ssl2_return_error(s,SSL2_PE_NO_CERTIFICATE);
775 SSLerr(SSL_F_SERVER_HELLO,SSL_R_NO_CERTIFICATE_SPECIFIED);
776 return(-1);
777 }
778
779 if (hit)
780 {
781 *(p++)=0; /* no certificate type */
782 s2n(s->version,p); /* version */
783 s2n(0,p); /* cert len */
784 s2n(0,p); /* ciphers len */
785 }
786 else
787 {
788 /* EAY EAY */
789 /* put certificate type */
790 *(p++)=SSL2_CT_X509_CERTIFICATE;
791 s2n(s->version,p); /* version */
792 n=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,NULL);
793 s2n(n,p); /* certificate length */
794 i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,&d);
795 n=0;
796
797 /* lets send out the ciphers we like in the
798 * prefered order */
799 sk= s->session->ciphers;
| 485 }
486#else
487 if (i < 0)
488 {
489 error=1;
490 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_BAD_RSA_DECRYPT);
491 }
492 /* incorrect number of key bytes for non export cipher */
493 else if ((!is_export && (i != EVP_CIPHER_key_length(c)))
494 || (is_export && ((i != ek) || (s->s2->tmp.clear+i !=
495 EVP_CIPHER_key_length(c)))))
496 {
497 error=1;
498 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_WRONG_NUMBER_OF_KEY_BITS);
499 }
500 if (error)
501 {
502 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
503 return(-1);
504 }
505#endif
506
507 if (is_export) i+=s->s2->tmp.clear;
508
509 if (i > SSL_MAX_MASTER_KEY_LENGTH)
510 {
511 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
512 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
513 return -1;
514 }
515 s->session->master_key_length=i;
516 memcpy(s->session->master_key,p,(unsigned int)i);
517 return(1);
518 }
519
520static int get_client_hello(SSL *s)
521 {
522 int i,n;
523 unsigned long len;
524 unsigned char *p;
525 STACK_OF(SSL_CIPHER) *cs; /* a stack of SSL_CIPHERS */
526 STACK_OF(SSL_CIPHER) *cl; /* the ones we want to use */
527 STACK_OF(SSL_CIPHER) *prio, *allow;
528 int z;
529
530 /* This is a bit of a hack to check for the correct packet
531 * type the first time round. */
532 if (s->state == SSL2_ST_GET_CLIENT_HELLO_A)
533 {
534 s->first_packet=1;
535 s->state=SSL2_ST_GET_CLIENT_HELLO_B;
536 }
537
538 p=(unsigned char *)s->init_buf->data;
539 if (s->state == SSL2_ST_GET_CLIENT_HELLO_B)
540 {
541 i=ssl2_read(s,(char *)&(p[s->init_num]),9-s->init_num);
542 if (i < (9-s->init_num))
543 return(ssl2_part_read(s,SSL_F_GET_CLIENT_HELLO,i));
544 s->init_num = 9;
545
546 if (*(p++) != SSL2_MT_CLIENT_HELLO)
547 {
548 if (p[-1] != SSL2_MT_ERROR)
549 {
550 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
551 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_READ_WRONG_PACKET_TYPE);
552 }
553 else
554 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_PEER_ERROR);
555 return(-1);
556 }
557 n2s(p,i);
558 if (i < s->version) s->version=i;
559 n2s(p,i); s->s2->tmp.cipher_spec_length=i;
560 n2s(p,i); s->s2->tmp.session_id_length=i;
561 n2s(p,i); s->s2->challenge_length=i;
562 if ( (i < SSL2_MIN_CHALLENGE_LENGTH) ||
563 (i > SSL2_MAX_CHALLENGE_LENGTH))
564 {
565 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
566 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_INVALID_CHALLENGE_LENGTH);
567 return(-1);
568 }
569 s->state=SSL2_ST_GET_CLIENT_HELLO_C;
570 }
571
572 /* SSL2_ST_GET_CLIENT_HELLO_C */
573 p=(unsigned char *)s->init_buf->data;
574 len = 9 + (unsigned long)s->s2->tmp.cipher_spec_length + (unsigned long)s->s2->challenge_length + (unsigned long)s->s2->tmp.session_id_length;
575 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
576 {
577 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
578 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_MESSAGE_TOO_LONG);
579 return -1;
580 }
581 n = (int)len - s->init_num;
582 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
583 if (i != n) return(ssl2_part_read(s,SSL_F_GET_CLIENT_HELLO,i));
584 if (s->msg_callback)
585 s->msg_callback(0, s->version, 0, p, (size_t)len, s, s->msg_callback_arg); /* CLIENT-HELLO */
586 p += 9;
587
588 /* get session-id before cipher stuff so we can get out session
589 * structure if it is cached */
590 /* session-id */
591 if ((s->s2->tmp.session_id_length != 0) &&
592 (s->s2->tmp.session_id_length != SSL2_SSL_SESSION_ID_LENGTH))
593 {
594 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
595 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_BAD_SSL_SESSION_ID_LENGTH);
596 return(-1);
597 }
598
599 if (s->s2->tmp.session_id_length == 0)
600 {
601 if (!ssl_get_new_session(s,1))
602 {
603 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
604 return(-1);
605 }
606 }
607 else
608 {
609 i=ssl_get_prev_session(s,&(p[s->s2->tmp.cipher_spec_length]),
610 s->s2->tmp.session_id_length);
611 if (i == 1)
612 { /* previous session */
613 s->hit=1;
614 }
615 else if (i == -1)
616 {
617 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
618 return(-1);
619 }
620 else
621 {
622 if (s->cert == NULL)
623 {
624 ssl2_return_error(s,SSL2_PE_NO_CERTIFICATE);
625 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_NO_CERTIFICATE_SET);
626 return(-1);
627 }
628
629 if (!ssl_get_new_session(s,1))
630 {
631 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
632 return(-1);
633 }
634 }
635 }
636
637 if (!s->hit)
638 {
639 cs=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.cipher_spec_length,
640 &s->session->ciphers);
641 if (cs == NULL) goto mem_err;
642
643 cl=SSL_get_ciphers(s);
644
645 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
646 {
647 prio=sk_SSL_CIPHER_dup(cl);
648 if (prio == NULL) goto mem_err;
649 allow = cs;
650 }
651 else
652 {
653 prio = cs;
654 allow = cl;
655 }
656 for (z=0; z<sk_SSL_CIPHER_num(prio); z++)
657 {
658 if (sk_SSL_CIPHER_find(allow,sk_SSL_CIPHER_value(prio,z)) < 0)
659 {
660 sk_SSL_CIPHER_delete(prio,z);
661 z--;
662 }
663 }
664 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
665 {
666 sk_SSL_CIPHER_free(s->session->ciphers);
667 s->session->ciphers = prio;
668 }
669 /* s->session->ciphers should now have a list of
670 * ciphers that are on both the client and server.
671 * This list is ordered by the order the client sent
672 * the ciphers or in the order of the server's preference
673 * if SSL_OP_CIPHER_SERVER_PREFERENCE was set.
674 */
675 }
676 p+=s->s2->tmp.cipher_spec_length;
677 /* done cipher selection */
678
679 /* session id extracted already */
680 p+=s->s2->tmp.session_id_length;
681
682 /* challenge */
683 if (s->s2->challenge_length > sizeof s->s2->challenge)
684 {
685 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
686 SSLerr(SSL_F_GET_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
687 return -1;
688 }
689 memcpy(s->s2->challenge,p,(unsigned int)s->s2->challenge_length);
690 return(1);
691mem_err:
692 SSLerr(SSL_F_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE);
693 return(0);
694 }
695
696static int server_hello(SSL *s)
697 {
698 unsigned char *p,*d;
699 int n,hit;
700 STACK_OF(SSL_CIPHER) *sk;
701
702 p=(unsigned char *)s->init_buf->data;
703 if (s->state == SSL2_ST_SEND_SERVER_HELLO_A)
704 {
705 d=p+11;
706 *(p++)=SSL2_MT_SERVER_HELLO; /* type */
707 hit=s->hit;
708 *(p++)=(unsigned char)hit;
709#if 1
710 if (!hit)
711 {
712 if (s->session->sess_cert != NULL)
713 /* This can't really happen because get_client_hello
714 * has called ssl_get_new_session, which does not set
715 * sess_cert. */
716 ssl_sess_cert_free(s->session->sess_cert);
717 s->session->sess_cert = ssl_sess_cert_new();
718 if (s->session->sess_cert == NULL)
719 {
720 SSLerr(SSL_F_SERVER_HELLO, ERR_R_MALLOC_FAILURE);
721 return(-1);
722 }
723 }
724 /* If 'hit' is set, then s->sess_cert may be non-NULL or NULL,
725 * depending on whether it survived in the internal cache
726 * or was retrieved from an external cache.
727 * If it is NULL, we cannot put any useful data in it anyway,
728 * so we don't touch it.
729 */
730
731#else /* That's what used to be done when cert_st and sess_cert_st were
732 * the same. */
733 if (!hit)
734 { /* else add cert to session */
735 CRYPTO_add(&s->cert->references,1,CRYPTO_LOCK_SSL_CERT);
736 if (s->session->sess_cert != NULL)
737 ssl_cert_free(s->session->sess_cert);
738 s->session->sess_cert=s->cert;
739 }
740 else /* We have a session id-cache hit, if the
741 * session-id has no certificate listed against
742 * the 'cert' structure, grab the 'old' one
743 * listed against the SSL connection */
744 {
745 if (s->session->sess_cert == NULL)
746 {
747 CRYPTO_add(&s->cert->references,1,
748 CRYPTO_LOCK_SSL_CERT);
749 s->session->sess_cert=s->cert;
750 }
751 }
752#endif
753
754 if (s->cert == NULL)
755 {
756 ssl2_return_error(s,SSL2_PE_NO_CERTIFICATE);
757 SSLerr(SSL_F_SERVER_HELLO,SSL_R_NO_CERTIFICATE_SPECIFIED);
758 return(-1);
759 }
760
761 if (hit)
762 {
763 *(p++)=0; /* no certificate type */
764 s2n(s->version,p); /* version */
765 s2n(0,p); /* cert len */
766 s2n(0,p); /* ciphers len */
767 }
768 else
769 {
770 /* EAY EAY */
771 /* put certificate type */
772 *(p++)=SSL2_CT_X509_CERTIFICATE;
773 s2n(s->version,p); /* version */
774 n=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,NULL);
775 s2n(n,p); /* certificate length */
776 i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,&d);
777 n=0;
778
779 /* lets send out the ciphers we like in the
780 * prefered order */
781 sk= s->session->ciphers;
|
800 n=ssl_cipher_list_to_bytes(s,s->session->ciphers,d);
| 782 n=ssl_cipher_list_to_bytes(s,s->session->ciphers,d,0);
|
801 d+=n;
802 s2n(n,p); /* add cipher length */
803 }
804
805 /* make and send conn_id */
806 s2n(SSL2_CONNECTION_ID_LENGTH,p); /* add conn_id length */
807 s->s2->conn_id_length=SSL2_CONNECTION_ID_LENGTH;
| 783 d+=n;
784 s2n(n,p); /* add cipher length */
785 }
786
787 /* make and send conn_id */
788 s2n(SSL2_CONNECTION_ID_LENGTH,p); /* add conn_id length */
789 s->s2->conn_id_length=SSL2_CONNECTION_ID_LENGTH;
|
808 if(RAND_pseudo_bytes(s->s2->conn_id,(int)s->s2->conn_id_length) <= 0)
809 return -1;
| 790 if (RAND_pseudo_bytes(s->s2->conn_id,(int)s->s2->conn_id_length) <= 0)
791 return -1;
|
810 memcpy(d,s->s2->conn_id,SSL2_CONNECTION_ID_LENGTH);
811 d+=SSL2_CONNECTION_ID_LENGTH;
812
813 s->state=SSL2_ST_SEND_SERVER_HELLO_B;
814 s->init_num=d-(unsigned char *)s->init_buf->data;
815 s->init_off=0;
816 }
817 /* SSL2_ST_SEND_SERVER_HELLO_B */
818 /* If we are using TCP/IP, the performance is bad if we do 2
819 * writes without a read between them. This occurs when
820 * Session-id reuse is used, so I will put in a buffering module
821 */
822 if (s->hit)
823 {
824 if (!ssl_init_wbio_buffer(s,1)) return(-1);
825 }
826
827 return(ssl2_do_write(s));
828 }
829
830static int get_client_finished(SSL *s)
831 {
832 unsigned char *p;
833 int i, n;
834 unsigned long len;
835
836 p=(unsigned char *)s->init_buf->data;
837 if (s->state == SSL2_ST_GET_CLIENT_FINISHED_A)
838 {
839 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
840 if (i < 1-s->init_num)
841 return(ssl2_part_read(s,SSL_F_GET_CLIENT_FINISHED,i));
842 s->init_num += i;
843
844 if (*p != SSL2_MT_CLIENT_FINISHED)
845 {
846 if (*p != SSL2_MT_ERROR)
847 {
848 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
849 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
850 }
851 else
852 {
853 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_PEER_ERROR);
854 /* try to read the error message */
855 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
856 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
857 }
858 return(-1);
859 }
860 s->state=SSL2_ST_GET_CLIENT_FINISHED_B;
861 }
862
863 /* SSL2_ST_GET_CLIENT_FINISHED_B */
864 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
865 {
866 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
867 SSLerr(SSL_F_GET_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
868 return -1;
869 }
870 len = 1 + (unsigned long)s->s2->conn_id_length;
871 n = (int)len - s->init_num;
872 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
873 if (i < n)
874 {
875 return(ssl2_part_read(s,SSL_F_GET_CLIENT_FINISHED,i));
876 }
877 if (s->msg_callback)
878 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* CLIENT-FINISHED */
879 p += 1;
880 if (memcmp(p,s->s2->conn_id,s->s2->conn_id_length) != 0)
881 {
882 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
883 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_CONNECTION_ID_IS_DIFFERENT);
884 return(-1);
885 }
886 return(1);
887 }
888
889static int server_verify(SSL *s)
890 {
891 unsigned char *p;
892
893 if (s->state == SSL2_ST_SEND_SERVER_VERIFY_A)
894 {
895 p=(unsigned char *)s->init_buf->data;
896 *(p++)=SSL2_MT_SERVER_VERIFY;
897 if (s->s2->challenge_length > sizeof s->s2->challenge)
898 {
899 SSLerr(SSL_F_SERVER_VERIFY, ERR_R_INTERNAL_ERROR);
900 return -1;
901 }
902 memcpy(p,s->s2->challenge,(unsigned int)s->s2->challenge_length);
903 /* p+=s->s2->challenge_length; */
904
905 s->state=SSL2_ST_SEND_SERVER_VERIFY_B;
906 s->init_num=s->s2->challenge_length+1;
907 s->init_off=0;
908 }
909 return(ssl2_do_write(s));
910 }
911
912static int server_finish(SSL *s)
913 {
914 unsigned char *p;
915
916 if (s->state == SSL2_ST_SEND_SERVER_FINISHED_A)
917 {
918 p=(unsigned char *)s->init_buf->data;
919 *(p++)=SSL2_MT_SERVER_FINISHED;
920
921 if (s->session->session_id_length > sizeof s->session->session_id)
922 {
923 SSLerr(SSL_F_SERVER_FINISH, ERR_R_INTERNAL_ERROR);
924 return -1;
925 }
926 memcpy(p,s->session->session_id, (unsigned int)s->session->session_id_length);
927 /* p+=s->session->session_id_length; */
928
929 s->state=SSL2_ST_SEND_SERVER_FINISHED_B;
930 s->init_num=s->session->session_id_length+1;
931 s->init_off=0;
932 }
933
934 /* SSL2_ST_SEND_SERVER_FINISHED_B */
935 return(ssl2_do_write(s));
936 }
937
938/* send the request and check the response */
939static int request_certificate(SSL *s)
940 {
| 792 memcpy(d,s->s2->conn_id,SSL2_CONNECTION_ID_LENGTH);
793 d+=SSL2_CONNECTION_ID_LENGTH;
794
795 s->state=SSL2_ST_SEND_SERVER_HELLO_B;
796 s->init_num=d-(unsigned char *)s->init_buf->data;
797 s->init_off=0;
798 }
799 /* SSL2_ST_SEND_SERVER_HELLO_B */
800 /* If we are using TCP/IP, the performance is bad if we do 2
801 * writes without a read between them. This occurs when
802 * Session-id reuse is used, so I will put in a buffering module
803 */
804 if (s->hit)
805 {
806 if (!ssl_init_wbio_buffer(s,1)) return(-1);
807 }
808
809 return(ssl2_do_write(s));
810 }
811
812static int get_client_finished(SSL *s)
813 {
814 unsigned char *p;
815 int i, n;
816 unsigned long len;
817
818 p=(unsigned char *)s->init_buf->data;
819 if (s->state == SSL2_ST_GET_CLIENT_FINISHED_A)
820 {
821 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
822 if (i < 1-s->init_num)
823 return(ssl2_part_read(s,SSL_F_GET_CLIENT_FINISHED,i));
824 s->init_num += i;
825
826 if (*p != SSL2_MT_CLIENT_FINISHED)
827 {
828 if (*p != SSL2_MT_ERROR)
829 {
830 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
831 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
832 }
833 else
834 {
835 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_PEER_ERROR);
836 /* try to read the error message */
837 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
838 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
839 }
840 return(-1);
841 }
842 s->state=SSL2_ST_GET_CLIENT_FINISHED_B;
843 }
844
845 /* SSL2_ST_GET_CLIENT_FINISHED_B */
846 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
847 {
848 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
849 SSLerr(SSL_F_GET_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
850 return -1;
851 }
852 len = 1 + (unsigned long)s->s2->conn_id_length;
853 n = (int)len - s->init_num;
854 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
855 if (i < n)
856 {
857 return(ssl2_part_read(s,SSL_F_GET_CLIENT_FINISHED,i));
858 }
859 if (s->msg_callback)
860 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* CLIENT-FINISHED */
861 p += 1;
862 if (memcmp(p,s->s2->conn_id,s->s2->conn_id_length) != 0)
863 {
864 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
865 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_CONNECTION_ID_IS_DIFFERENT);
866 return(-1);
867 }
868 return(1);
869 }
870
871static int server_verify(SSL *s)
872 {
873 unsigned char *p;
874
875 if (s->state == SSL2_ST_SEND_SERVER_VERIFY_A)
876 {
877 p=(unsigned char *)s->init_buf->data;
878 *(p++)=SSL2_MT_SERVER_VERIFY;
879 if (s->s2->challenge_length > sizeof s->s2->challenge)
880 {
881 SSLerr(SSL_F_SERVER_VERIFY, ERR_R_INTERNAL_ERROR);
882 return -1;
883 }
884 memcpy(p,s->s2->challenge,(unsigned int)s->s2->challenge_length);
885 /* p+=s->s2->challenge_length; */
886
887 s->state=SSL2_ST_SEND_SERVER_VERIFY_B;
888 s->init_num=s->s2->challenge_length+1;
889 s->init_off=0;
890 }
891 return(ssl2_do_write(s));
892 }
893
894static int server_finish(SSL *s)
895 {
896 unsigned char *p;
897
898 if (s->state == SSL2_ST_SEND_SERVER_FINISHED_A)
899 {
900 p=(unsigned char *)s->init_buf->data;
901 *(p++)=SSL2_MT_SERVER_FINISHED;
902
903 if (s->session->session_id_length > sizeof s->session->session_id)
904 {
905 SSLerr(SSL_F_SERVER_FINISH, ERR_R_INTERNAL_ERROR);
906 return -1;
907 }
908 memcpy(p,s->session->session_id, (unsigned int)s->session->session_id_length);
909 /* p+=s->session->session_id_length; */
910
911 s->state=SSL2_ST_SEND_SERVER_FINISHED_B;
912 s->init_num=s->session->session_id_length+1;
913 s->init_off=0;
914 }
915
916 /* SSL2_ST_SEND_SERVER_FINISHED_B */
917 return(ssl2_do_write(s));
918 }
919
920/* send the request and check the response */
921static int request_certificate(SSL *s)
922 {
|
| 923 const unsigned char *cp;
|
941 unsigned char *p,*p2,*buf2;
942 unsigned char *ccd;
943 int i,j,ctype,ret= -1;
944 unsigned long len;
945 X509 *x509=NULL;
946 STACK_OF(X509) *sk=NULL;
947
948 ccd=s->s2->tmp.ccl;
949 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_A)
950 {
951 p=(unsigned char *)s->init_buf->data;
952 *(p++)=SSL2_MT_REQUEST_CERTIFICATE;
953 *(p++)=SSL2_AT_MD5_WITH_RSA_ENCRYPTION;
| 924 unsigned char *p,*p2,*buf2;
925 unsigned char *ccd;
926 int i,j,ctype,ret= -1;
927 unsigned long len;
928 X509 *x509=NULL;
929 STACK_OF(X509) *sk=NULL;
930
931 ccd=s->s2->tmp.ccl;
932 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_A)
933 {
934 p=(unsigned char *)s->init_buf->data;
935 *(p++)=SSL2_MT_REQUEST_CERTIFICATE;
936 *(p++)=SSL2_AT_MD5_WITH_RSA_ENCRYPTION;
|
954 if(RAND_pseudo_bytes(ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH) <= 0)
| 937 if (RAND_pseudo_bytes(ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH) <= 0)
|
955 return -1;
956 memcpy(p,ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH);
957
958 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_B;
959 s->init_num=SSL2_MIN_CERT_CHALLENGE_LENGTH+2;
960 s->init_off=0;
961 }
962
963 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_B)
964 {
965 i=ssl2_do_write(s);
966 if (i <= 0)
967 {
968 ret=i;
969 goto end;
970 }
971
972 s->init_num=0;
973 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_C;
974 }
975
976 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_C)
977 {
978 p=(unsigned char *)s->init_buf->data;
979 i=ssl2_read(s,(char *)&(p[s->init_num]),6-s->init_num); /* try to read 6 octets ... */
980 if (i < 3-s->init_num) /* ... but don't call ssl2_part_read now if we got at least 3
981 * (probably NO-CERTIFICATE-ERROR) */
982 {
983 ret=ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE,i);
984 goto end;
985 }
986 s->init_num += i;
987
988 if ((s->init_num >= 3) && (p[0] == SSL2_MT_ERROR))
989 {
990 n2s(p,i);
991 if (i != SSL2_PE_NO_CERTIFICATE)
992 {
993 /* not the error message we expected -- let ssl2_part_read handle it */
994 s->init_num -= 3;
995 ret = ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE, 3);
996 goto end;
997 }
998
999 if (s->msg_callback)
1000 s->msg_callback(0, s->version, 0, p, 3, s, s->msg_callback_arg); /* ERROR */
1001
1002 /* this is the one place where we can recover from an SSL 2.0 error */
1003
1004 if (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)
1005 {
1006 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
1007 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
1008 goto end;
1009 }
1010 ret=1;
1011 goto end;
1012 }
1013 if ((*(p++) != SSL2_MT_CLIENT_CERTIFICATE) || (s->init_num < 6))
1014 {
1015 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
1016 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_SHORT_READ);
1017 goto end;
1018 }
1019 if (s->init_num != 6)
1020 {
1021 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_INTERNAL_ERROR);
1022 goto end;
1023 }
1024
1025 /* ok we have a response */
1026 /* certificate type, there is only one right now. */
1027 ctype= *(p++);
1028 if (ctype != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
1029 {
1030 ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
1031 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_BAD_RESPONSE_ARGUMENT);
1032 goto end;
1033 }
1034 n2s(p,i); s->s2->tmp.clen=i;
1035 n2s(p,i); s->s2->tmp.rlen=i;
1036 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_D;
1037 }
1038
1039 /* SSL2_ST_SEND_REQUEST_CERTIFICATE_D */
1040 p=(unsigned char *)s->init_buf->data;
1041 len = 6 + (unsigned long)s->s2->tmp.clen + (unsigned long)s->s2->tmp.rlen;
1042 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
1043 {
1044 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_MESSAGE_TOO_LONG);
1045 goto end;
1046 }
1047 j = (int)len - s->init_num;
1048 i = ssl2_read(s,(char *)&(p[s->init_num]),j);
1049 if (i < j)
1050 {
1051 ret=ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE,i);
1052 goto end;
1053 }
1054 if (s->msg_callback)
1055 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* CLIENT-CERTIFICATE */
1056 p += 6;
1057
| 938 return -1;
939 memcpy(p,ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH);
940
941 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_B;
942 s->init_num=SSL2_MIN_CERT_CHALLENGE_LENGTH+2;
943 s->init_off=0;
944 }
945
946 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_B)
947 {
948 i=ssl2_do_write(s);
949 if (i <= 0)
950 {
951 ret=i;
952 goto end;
953 }
954
955 s->init_num=0;
956 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_C;
957 }
958
959 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_C)
960 {
961 p=(unsigned char *)s->init_buf->data;
962 i=ssl2_read(s,(char *)&(p[s->init_num]),6-s->init_num); /* try to read 6 octets ... */
963 if (i < 3-s->init_num) /* ... but don't call ssl2_part_read now if we got at least 3
964 * (probably NO-CERTIFICATE-ERROR) */
965 {
966 ret=ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE,i);
967 goto end;
968 }
969 s->init_num += i;
970
971 if ((s->init_num >= 3) && (p[0] == SSL2_MT_ERROR))
972 {
973 n2s(p,i);
974 if (i != SSL2_PE_NO_CERTIFICATE)
975 {
976 /* not the error message we expected -- let ssl2_part_read handle it */
977 s->init_num -= 3;
978 ret = ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE, 3);
979 goto end;
980 }
981
982 if (s->msg_callback)
983 s->msg_callback(0, s->version, 0, p, 3, s, s->msg_callback_arg); /* ERROR */
984
985 /* this is the one place where we can recover from an SSL 2.0 error */
986
987 if (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)
988 {
989 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
990 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
991 goto end;
992 }
993 ret=1;
994 goto end;
995 }
996 if ((*(p++) != SSL2_MT_CLIENT_CERTIFICATE) || (s->init_num < 6))
997 {
998 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
999 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_SHORT_READ);
1000 goto end;
1001 }
1002 if (s->init_num != 6)
1003 {
1004 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_INTERNAL_ERROR);
1005 goto end;
1006 }
1007
1008 /* ok we have a response */
1009 /* certificate type, there is only one right now. */
1010 ctype= *(p++);
1011 if (ctype != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
1012 {
1013 ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
1014 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_BAD_RESPONSE_ARGUMENT);
1015 goto end;
1016 }
1017 n2s(p,i); s->s2->tmp.clen=i;
1018 n2s(p,i); s->s2->tmp.rlen=i;
1019 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_D;
1020 }
1021
1022 /* SSL2_ST_SEND_REQUEST_CERTIFICATE_D */
1023 p=(unsigned char *)s->init_buf->data;
1024 len = 6 + (unsigned long)s->s2->tmp.clen + (unsigned long)s->s2->tmp.rlen;
1025 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
1026 {
1027 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_MESSAGE_TOO_LONG);
1028 goto end;
1029 }
1030 j = (int)len - s->init_num;
1031 i = ssl2_read(s,(char *)&(p[s->init_num]),j);
1032 if (i < j)
1033 {
1034 ret=ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE,i);
1035 goto end;
1036 }
1037 if (s->msg_callback)
1038 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* CLIENT-CERTIFICATE */
1039 p += 6;
1040
|
1058 x509=(X509 *)d2i_X509(NULL,&p,(long)s->s2->tmp.clen);
| 1041 cp = p;
1042 x509=(X509 *)d2i_X509(NULL,&cp,(long)s->s2->tmp.clen);
|
1059 if (x509 == NULL)
1060 {
1061 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_X509_LIB);
1062 goto msg_end;
1063 }
1064
1065 if (((sk=sk_X509_new_null()) == NULL) || (!sk_X509_push(sk,x509)))
1066 {
1067 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1068 goto msg_end;
1069 }
1070
1071 i=ssl_verify_cert_chain(s,sk);
1072
1073 if (i) /* we like the packet, now check the chksum */
1074 {
1075 EVP_MD_CTX ctx;
1076 EVP_PKEY *pkey=NULL;
1077
1078 EVP_MD_CTX_init(&ctx);
1079 EVP_VerifyInit_ex(&ctx,s->ctx->rsa_md5, NULL);
1080 EVP_VerifyUpdate(&ctx,s->s2->key_material,
1081 s->s2->key_material_length);
1082 EVP_VerifyUpdate(&ctx,ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH);
1083
1084 i=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,NULL);
1085 buf2=OPENSSL_malloc((unsigned int)i);
1086 if (buf2 == NULL)
1087 {
1088 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1089 goto msg_end;
1090 }
1091 p2=buf2;
1092 i=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,&p2);
1093 EVP_VerifyUpdate(&ctx,buf2,(unsigned int)i);
1094 OPENSSL_free(buf2);
1095
1096 pkey=X509_get_pubkey(x509);
1097 if (pkey == NULL) goto end;
| 1043 if (x509 == NULL)
1044 {
1045 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_X509_LIB);
1046 goto msg_end;
1047 }
1048
1049 if (((sk=sk_X509_new_null()) == NULL) || (!sk_X509_push(sk,x509)))
1050 {
1051 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1052 goto msg_end;
1053 }
1054
1055 i=ssl_verify_cert_chain(s,sk);
1056
1057 if (i) /* we like the packet, now check the chksum */
1058 {
1059 EVP_MD_CTX ctx;
1060 EVP_PKEY *pkey=NULL;
1061
1062 EVP_MD_CTX_init(&ctx);
1063 EVP_VerifyInit_ex(&ctx,s->ctx->rsa_md5, NULL);
1064 EVP_VerifyUpdate(&ctx,s->s2->key_material,
1065 s->s2->key_material_length);
1066 EVP_VerifyUpdate(&ctx,ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH);
1067
1068 i=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,NULL);
1069 buf2=OPENSSL_malloc((unsigned int)i);
1070 if (buf2 == NULL)
1071 {
1072 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1073 goto msg_end;
1074 }
1075 p2=buf2;
1076 i=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,&p2);
1077 EVP_VerifyUpdate(&ctx,buf2,(unsigned int)i);
1078 OPENSSL_free(buf2);
1079
1080 pkey=X509_get_pubkey(x509);
1081 if (pkey == NULL) goto end;
|
1098 i=EVP_VerifyFinal(&ctx,p,s->s2->tmp.rlen,pkey);
| 1082 i=EVP_VerifyFinal(&ctx,cp,s->s2->tmp.rlen,pkey);
|
1099 EVP_PKEY_free(pkey);
1100 EVP_MD_CTX_cleanup(&ctx);
1101
1102 if (i)
1103 {
1104 if (s->session->peer != NULL)
1105 X509_free(s->session->peer);
1106 s->session->peer=x509;
1107 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
1108 s->session->verify_result = s->verify_result;
1109 ret=1;
1110 goto end;
1111 }
1112 else
1113 {
1114 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_BAD_CHECKSUM);
1115 goto msg_end;
1116 }
1117 }
1118 else
1119 {
1120msg_end:
1121 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
1122 }
1123end:
1124 sk_X509_free(sk);
1125 X509_free(x509);
1126 return(ret);
1127 }
1128
1129static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from,
1130 unsigned char *to, int padding)
1131 {
1132 RSA *rsa;
1133 int i;
1134
1135 if ((c == NULL) || (c->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL))
1136 {
1137 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,SSL_R_NO_PRIVATEKEY);
1138 return(-1);
1139 }
1140 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey->type != EVP_PKEY_RSA)
1141 {
1142 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1143 return(-1);
1144 }
1145 rsa=c->pkeys[SSL_PKEY_RSA_ENC].privatekey->pkey.rsa;
1146
1147 /* we have the public key */
1148 i=RSA_private_decrypt(len,from,to,rsa,padding);
1149 if (i < 0)
1150 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,ERR_R_RSA_LIB);
1151 return(i);
1152 }
1153#else /* !OPENSSL_NO_SSL2 */
1154
1155# if PEDANTIC
1156static void *dummy=&dummy;
1157# endif
1158
1159#endif
| 1083 EVP_PKEY_free(pkey);
1084 EVP_MD_CTX_cleanup(&ctx);
1085
1086 if (i)
1087 {
1088 if (s->session->peer != NULL)
1089 X509_free(s->session->peer);
1090 s->session->peer=x509;
1091 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
1092 s->session->verify_result = s->verify_result;
1093 ret=1;
1094 goto end;
1095 }
1096 else
1097 {
1098 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_BAD_CHECKSUM);
1099 goto msg_end;
1100 }
1101 }
1102 else
1103 {
1104msg_end:
1105 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
1106 }
1107end:
1108 sk_X509_free(sk);
1109 X509_free(x509);
1110 return(ret);
1111 }
1112
1113static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from,
1114 unsigned char *to, int padding)
1115 {
1116 RSA *rsa;
1117 int i;
1118
1119 if ((c == NULL) || (c->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL))
1120 {
1121 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,SSL_R_NO_PRIVATEKEY);
1122 return(-1);
1123 }
1124 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey->type != EVP_PKEY_RSA)
1125 {
1126 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1127 return(-1);
1128 }
1129 rsa=c->pkeys[SSL_PKEY_RSA_ENC].privatekey->pkey.rsa;
1130
1131 /* we have the public key */
1132 i=RSA_private_decrypt(len,from,to,rsa,padding);
1133 if (i < 0)
1134 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,ERR_R_RSA_LIB);
1135 return(i);
1136 }
1137#else /* !OPENSSL_NO_SSL2 */
1138
1139# if PEDANTIC
1140static void *dummy=&dummy;
1141# endif
1142
1143#endif
|