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Diffstat (limited to 'src/lib/libssl/s23_clnt.c')
-rw-r--r--src/lib/libssl/s23_clnt.c509
1 files changed, 509 insertions, 0 deletions
diff --git a/src/lib/libssl/s23_clnt.c b/src/lib/libssl/s23_clnt.c
new file mode 100644
index 0000000000..779e94a35c
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+++ b/src/lib/libssl/s23_clnt.c
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1/* ssl/s23_clnt.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#include <stdio.h>
60#include "ssl_locl.h"
61#include <openssl/buffer.h>
62#include <openssl/rand.h>
63#include <openssl/objects.h>
64#include <openssl/evp.h>
65
66static SSL_METHOD *ssl23_get_client_method(int ver);
67static int ssl23_client_hello(SSL *s);
68static int ssl23_get_server_hello(SSL *s);
69static SSL_METHOD *ssl23_get_client_method(int ver)
70 {
71#ifndef OPENSSL_NO_SSL2
72 if (ver == SSL2_VERSION)
73 return(SSLv2_client_method());
74#endif
75 if (ver == SSL3_VERSION)
76 return(SSLv3_client_method());
77 else if (ver == TLS1_VERSION)
78 return(TLSv1_client_method());
79 else
80 return(NULL);
81 }
82
83SSL_METHOD *SSLv23_client_method(void)
84 {
85 static int init=1;
86 static SSL_METHOD SSLv23_client_data;
87
88 if (init)
89 {
90 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
91
92 if (init)
93 {
94 memcpy((char *)&SSLv23_client_data,
95 (char *)sslv23_base_method(),sizeof(SSL_METHOD));
96 SSLv23_client_data.ssl_connect=ssl23_connect;
97 SSLv23_client_data.get_ssl_method=ssl23_get_client_method;
98 init=0;
99 }
100
101 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
102 }
103 return(&SSLv23_client_data);
104 }
105
106int ssl23_connect(SSL *s)
107 {
108 BUF_MEM *buf=NULL;
109 unsigned long Time=time(NULL);
110 void (*cb)(const SSL *ssl,int type,int val)=NULL;
111 int ret= -1;
112 int new_state,state;
113
114 RAND_add(&Time,sizeof(Time),0);
115 ERR_clear_error();
116 clear_sys_error();
117
118 if (s->info_callback != NULL)
119 cb=s->info_callback;
120 else if (s->ctx->info_callback != NULL)
121 cb=s->ctx->info_callback;
122
123 s->in_handshake++;
124 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
125
126 for (;;)
127 {
128 state=s->state;
129
130 switch(s->state)
131 {
132 case SSL_ST_BEFORE:
133 case SSL_ST_CONNECT:
134 case SSL_ST_BEFORE|SSL_ST_CONNECT:
135 case SSL_ST_OK|SSL_ST_CONNECT:
136
137 if (s->session != NULL)
138 {
139 SSLerr(SSL_F_SSL23_CONNECT,SSL_R_SSL23_DOING_SESSION_ID_REUSE);
140 ret= -1;
141 goto end;
142 }
143 s->server=0;
144 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
145
146 /* s->version=TLS1_VERSION; */
147 s->type=SSL_ST_CONNECT;
148
149 if (s->init_buf == NULL)
150 {
151 if ((buf=BUF_MEM_new()) == NULL)
152 {
153 ret= -1;
154 goto end;
155 }
156 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
157 {
158 ret= -1;
159 goto end;
160 }
161 s->init_buf=buf;
162 buf=NULL;
163 }
164
165 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
166
167 ssl3_init_finished_mac(s);
168
169 s->state=SSL23_ST_CW_CLNT_HELLO_A;
170 s->ctx->stats.sess_connect++;
171 s->init_num=0;
172 break;
173
174 case SSL23_ST_CW_CLNT_HELLO_A:
175 case SSL23_ST_CW_CLNT_HELLO_B:
176
177 s->shutdown=0;
178 ret=ssl23_client_hello(s);
179 if (ret <= 0) goto end;
180 s->state=SSL23_ST_CR_SRVR_HELLO_A;
181 s->init_num=0;
182
183 break;
184
185 case SSL23_ST_CR_SRVR_HELLO_A:
186 case SSL23_ST_CR_SRVR_HELLO_B:
187 ret=ssl23_get_server_hello(s);
188 if (ret >= 0) cb=NULL;
189 goto end;
190 /* break; */
191
192 default:
193 SSLerr(SSL_F_SSL23_CONNECT,SSL_R_UNKNOWN_STATE);
194 ret= -1;
195 goto end;
196 /* break; */
197 }
198
199 if (s->debug) { (void)BIO_flush(s->wbio); }
200
201 if ((cb != NULL) && (s->state != state))
202 {
203 new_state=s->state;
204 s->state=state;
205 cb(s,SSL_CB_CONNECT_LOOP,1);
206 s->state=new_state;
207 }
208 }
209end:
210 s->in_handshake--;
211 if (buf != NULL)
212 BUF_MEM_free(buf);
213 if (cb != NULL)
214 cb(s,SSL_CB_CONNECT_EXIT,ret);
215 return(ret);
216 }
217
218
219static int ssl23_client_hello(SSL *s)
220 {
221 unsigned char *buf;
222 unsigned char *p,*d;
223 int i,ch_len;
224 int ret;
225
226 buf=(unsigned char *)s->init_buf->data;
227 if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
228 {
229#if 0
230 /* don't reuse session-id's */
231 if (!ssl_get_new_session(s,0))
232 {
233 return(-1);
234 }
235#endif
236
237 p=s->s3->client_random;
238 if(RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE) <= 0)
239 return -1;
240
241 /* Do the message type and length last */
242 d= &(buf[2]);
243 p=d+9;
244
245 *(d++)=SSL2_MT_CLIENT_HELLO;
246 if (!(s->options & SSL_OP_NO_TLSv1))
247 {
248 *(d++)=TLS1_VERSION_MAJOR;
249 *(d++)=TLS1_VERSION_MINOR;
250 s->client_version=TLS1_VERSION;
251 }
252#ifdef OPENSSL_FIPS
253 else if(FIPS_mode())
254 {
255 SSLerr(SSL_F_SSL23_CLIENT_HELLO,
256 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
257 return -1;
258 }
259#endif
260 else if (!(s->options & SSL_OP_NO_SSLv3))
261 {
262 *(d++)=SSL3_VERSION_MAJOR;
263 *(d++)=SSL3_VERSION_MINOR;
264 s->client_version=SSL3_VERSION;
265 }
266 else if (!(s->options & SSL_OP_NO_SSLv2))
267 {
268 *(d++)=SSL2_VERSION_MAJOR;
269 *(d++)=SSL2_VERSION_MINOR;
270 s->client_version=SSL2_VERSION;
271 }
272 else
273 {
274 SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE);
275 return(-1);
276 }
277
278 /* Ciphers supported */
279 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p);
280 if (i == 0)
281 {
282 /* no ciphers */
283 SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
284 return(-1);
285 }
286 s2n(i,d);
287 p+=i;
288
289 /* put in the session-id, zero since there is no
290 * reuse. */
291#if 0
292 s->session->session_id_length=0;
293#endif
294 s2n(0,d);
295
296 if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
297 ch_len=SSL2_CHALLENGE_LENGTH;
298 else
299 ch_len=SSL2_MAX_CHALLENGE_LENGTH;
300
301 /* write out sslv2 challenge */
302 if (SSL3_RANDOM_SIZE < ch_len)
303 i=SSL3_RANDOM_SIZE;
304 else
305 i=ch_len;
306 s2n(i,d);
307 memset(&(s->s3->client_random[0]),0,SSL3_RANDOM_SIZE);
308 if(RAND_pseudo_bytes(&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i) <= 0)
309 return -1;
310
311 memcpy(p,&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
312 p+=i;
313
314 i= p- &(buf[2]);
315 buf[0]=((i>>8)&0xff)|0x80;
316 buf[1]=(i&0xff);
317
318 s->state=SSL23_ST_CW_CLNT_HELLO_B;
319 /* number of bytes to write */
320 s->init_num=i+2;
321 s->init_off=0;
322
323 ssl3_finish_mac(s,&(buf[2]),i);
324 }
325
326 /* SSL3_ST_CW_CLNT_HELLO_B */
327 ret = ssl23_write_bytes(s);
328 if (ret >= 2)
329 if (s->msg_callback)
330 s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data+2, ret-2, s, s->msg_callback_arg); /* CLIENT-HELLO */
331 return ret;
332 }
333
334static int ssl23_get_server_hello(SSL *s)
335 {
336 char buf[8];
337 unsigned char *p;
338 int i;
339 int n;
340
341 n=ssl23_read_bytes(s,7);
342
343 if (n != 7) return(n);
344 p=s->packet;
345
346 memcpy(buf,p,n);
347
348 if ((p[0] & 0x80) && (p[2] == SSL2_MT_SERVER_HELLO) &&
349 (p[5] == 0x00) && (p[6] == 0x02))
350 {
351#ifdef OPENSSL_NO_SSL2
352 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
353 goto err;
354#else
355 /* we are talking sslv2 */
356 /* we need to clean up the SSLv3 setup and put in the
357 * sslv2 stuff. */
358 int ch_len;
359
360 if (s->options & SSL_OP_NO_SSLv2)
361 {
362 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
363 goto err;
364 }
365 if (s->s2 == NULL)
366 {
367 if (!ssl2_new(s))
368 goto err;
369 }
370 else
371 ssl2_clear(s);
372
373 if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
374 ch_len=SSL2_CHALLENGE_LENGTH;
375 else
376 ch_len=SSL2_MAX_CHALLENGE_LENGTH;
377
378 /* write out sslv2 challenge */
379 i=(SSL3_RANDOM_SIZE < ch_len)
380 ?SSL3_RANDOM_SIZE:ch_len;
381 s->s2->challenge_length=i;
382 memcpy(s->s2->challenge,
383 &(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
384
385 if (s->s3 != NULL) ssl3_free(s);
386
387 if (!BUF_MEM_grow_clean(s->init_buf,
388 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
389 {
390 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
391 goto err;
392 }
393
394 s->state=SSL2_ST_GET_SERVER_HELLO_A;
395 if (!(s->client_version == SSL2_VERSION))
396 /* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */
397 s->s2->ssl2_rollback=1;
398
399 /* setup the 5 bytes we have read so we get them from
400 * the sslv2 buffer */
401 s->rstate=SSL_ST_READ_HEADER;
402 s->packet_length=n;
403 s->packet= &(s->s2->rbuf[0]);
404 memcpy(s->packet,buf,n);
405 s->s2->rbuf_left=n;
406 s->s2->rbuf_offs=0;
407
408 /* we have already written one */
409 s->s2->write_sequence=1;
410
411 s->method=SSLv2_client_method();
412 s->handshake_func=s->method->ssl_connect;
413#endif
414 }
415 else if ((p[0] == SSL3_RT_HANDSHAKE) &&
416 (p[1] == SSL3_VERSION_MAJOR) &&
417 ((p[2] == SSL3_VERSION_MINOR) ||
418 (p[2] == TLS1_VERSION_MINOR)) &&
419 (p[5] == SSL3_MT_SERVER_HELLO))
420 {
421 /* we have sslv3 or tls1 */
422
423 if (!ssl_init_wbio_buffer(s,1)) goto err;
424
425 /* we are in this state */
426 s->state=SSL3_ST_CR_SRVR_HELLO_A;
427
428 /* put the 5 bytes we have read into the input buffer
429 * for SSLv3 */
430 s->rstate=SSL_ST_READ_HEADER;
431 s->packet_length=n;
432 s->packet= &(s->s3->rbuf.buf[0]);
433 memcpy(s->packet,buf,n);
434 s->s3->rbuf.left=n;
435 s->s3->rbuf.offset=0;
436
437 if ((p[2] == SSL3_VERSION_MINOR) &&
438 !(s->options & SSL_OP_NO_SSLv3))
439 {
440#ifdef OPENSSL_FIPS
441 if(FIPS_mode())
442 {
443 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,
444 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
445 goto err;
446 }
447#endif
448 s->version=SSL3_VERSION;
449 s->method=SSLv3_client_method();
450 }
451 else if ((p[2] == TLS1_VERSION_MINOR) &&
452 !(s->options & SSL_OP_NO_TLSv1))
453 {
454 s->version=TLS1_VERSION;
455 s->method=TLSv1_client_method();
456 }
457 else
458 {
459 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
460 goto err;
461 }
462
463 s->handshake_func=s->method->ssl_connect;
464 }
465 else if ((p[0] == SSL3_RT_ALERT) &&
466 (p[1] == SSL3_VERSION_MAJOR) &&
467 ((p[2] == SSL3_VERSION_MINOR) ||
468 (p[2] == TLS1_VERSION_MINOR)) &&
469 (p[3] == 0) &&
470 (p[4] == 2))
471 {
472 void (*cb)(const SSL *ssl,int type,int val)=NULL;
473 int j;
474
475 /* An alert */
476 if (s->info_callback != NULL)
477 cb=s->info_callback;
478 else if (s->ctx->info_callback != NULL)
479 cb=s->ctx->info_callback;
480
481 i=p[5];
482 if (cb != NULL)
483 {
484 j=(i<<8)|p[6];
485 cb(s,SSL_CB_READ_ALERT,j);
486 }
487
488 s->rwstate=SSL_NOTHING;
489 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]);
490 goto err;
491 }
492 else
493 {
494 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNKNOWN_PROTOCOL);
495 goto err;
496 }
497 s->init_num=0;
498
499 /* Since, if we are sending a ssl23 client hello, we are not
500 * reusing a session-id */
501 if (!ssl_get_new_session(s,0))
502 goto err;
503
504 s->first_packet=1;
505 return(SSL_connect(s));
506err:
507 return(-1);
508 }
509
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