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authorcvs2svn <admin@example.com>2003-03-22 08:02:04 +0000
committercvs2svn <admin@example.com>2003-03-22 08:02:04 +0000
commitdf32a1286ae06981a79e30b678165a784696be4b (patch)
tree3d70e9a28e2db2eee8cd542ce0ce859502668178 /src/lib/libssl/s23_clnt.c
parent2850ebd15c3cfddf6fb7edcd08cb6b2c6f717be9 (diff)
downloadopenbsd-OPENBSD_3_3_BASE.tar.gz
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openbsd-OPENBSD_3_3_BASE.zip
This commit was manufactured by cvs2git to create tag 'OPENBSD_3_3_BASE'.OPENBSD_3_3_BASE
Diffstat (limited to 'src/lib/libssl/s23_clnt.c')
-rw-r--r--src/lib/libssl/s23_clnt.c480
1 files changed, 0 insertions, 480 deletions
diff --git a/src/lib/libssl/s23_clnt.c b/src/lib/libssl/s23_clnt.c
deleted file mode 100644
index 019e9aecee..0000000000
--- a/src/lib/libssl/s23_clnt.c
+++ /dev/null
@@ -1,480 +0,0 @@
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 memcpy((char *)&SSLv23_client_data,
91 (char *)sslv23_base_method(),sizeof(SSL_METHOD));
92 SSLv23_client_data.ssl_connect=ssl23_connect;
93 SSLv23_client_data.get_ssl_method=ssl23_get_client_method;
94 init=0;
95 }
96 return(&SSLv23_client_data);
97 }
98
99int ssl23_connect(SSL *s)
100 {
101 BUF_MEM *buf;
102 unsigned long Time=time(NULL);
103 void (*cb)(const SSL *ssl,int type,int val)=NULL;
104 int ret= -1;
105 int new_state,state;
106
107 RAND_add(&Time,sizeof(Time),0);
108 ERR_clear_error();
109 clear_sys_error();
110
111 if (s->info_callback != NULL)
112 cb=s->info_callback;
113 else if (s->ctx->info_callback != NULL)
114 cb=s->ctx->info_callback;
115
116 s->in_handshake++;
117 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
118
119 for (;;)
120 {
121 state=s->state;
122
123 switch(s->state)
124 {
125 case SSL_ST_BEFORE:
126 case SSL_ST_CONNECT:
127 case SSL_ST_BEFORE|SSL_ST_CONNECT:
128 case SSL_ST_OK|SSL_ST_CONNECT:
129
130 if (s->session != NULL)
131 {
132 SSLerr(SSL_F_SSL23_CONNECT,SSL_R_SSL23_DOING_SESSION_ID_REUSE);
133 ret= -1;
134 goto end;
135 }
136 s->server=0;
137 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
138
139 /* s->version=TLS1_VERSION; */
140 s->type=SSL_ST_CONNECT;
141
142 if (s->init_buf == NULL)
143 {
144 if ((buf=BUF_MEM_new()) == NULL)
145 {
146 ret= -1;
147 goto end;
148 }
149 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
150 {
151 ret= -1;
152 goto end;
153 }
154 s->init_buf=buf;
155 }
156
157 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
158
159 ssl3_init_finished_mac(s);
160
161 s->state=SSL23_ST_CW_CLNT_HELLO_A;
162 s->ctx->stats.sess_connect++;
163 s->init_num=0;
164 break;
165
166 case SSL23_ST_CW_CLNT_HELLO_A:
167 case SSL23_ST_CW_CLNT_HELLO_B:
168
169 s->shutdown=0;
170 ret=ssl23_client_hello(s);
171 if (ret <= 0) goto end;
172 s->state=SSL23_ST_CR_SRVR_HELLO_A;
173 s->init_num=0;
174
175 break;
176
177 case SSL23_ST_CR_SRVR_HELLO_A:
178 case SSL23_ST_CR_SRVR_HELLO_B:
179 ret=ssl23_get_server_hello(s);
180 if (ret >= 0) cb=NULL;
181 goto end;
182 /* break; */
183
184 default:
185 SSLerr(SSL_F_SSL23_CONNECT,SSL_R_UNKNOWN_STATE);
186 ret= -1;
187 goto end;
188 /* break; */
189 }
190
191 if (s->debug) { (void)BIO_flush(s->wbio); }
192
193 if ((cb != NULL) && (s->state != state))
194 {
195 new_state=s->state;
196 s->state=state;
197 cb(s,SSL_CB_CONNECT_LOOP,1);
198 s->state=new_state;
199 }
200 }
201end:
202 s->in_handshake--;
203 if (cb != NULL)
204 cb(s,SSL_CB_CONNECT_EXIT,ret);
205 return(ret);
206 }
207
208
209static int ssl23_client_hello(SSL *s)
210 {
211 unsigned char *buf;
212 unsigned char *p,*d;
213 int i,ch_len;
214 int ret;
215
216 buf=(unsigned char *)s->init_buf->data;
217 if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
218 {
219#if 0
220 /* don't reuse session-id's */
221 if (!ssl_get_new_session(s,0))
222 {
223 return(-1);
224 }
225#endif
226
227 p=s->s3->client_random;
228 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE);
229
230 /* Do the message type and length last */
231 d= &(buf[2]);
232 p=d+9;
233
234 *(d++)=SSL2_MT_CLIENT_HELLO;
235 if (!(s->options & SSL_OP_NO_TLSv1))
236 {
237 *(d++)=TLS1_VERSION_MAJOR;
238 *(d++)=TLS1_VERSION_MINOR;
239 s->client_version=TLS1_VERSION;
240 }
241 else if (!(s->options & SSL_OP_NO_SSLv3))
242 {
243 *(d++)=SSL3_VERSION_MAJOR;
244 *(d++)=SSL3_VERSION_MINOR;
245 s->client_version=SSL3_VERSION;
246 }
247 else if (!(s->options & SSL_OP_NO_SSLv2))
248 {
249 *(d++)=SSL2_VERSION_MAJOR;
250 *(d++)=SSL2_VERSION_MINOR;
251 s->client_version=SSL2_VERSION;
252 }
253 else
254 {
255 SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_PROTOCOLS_AVAILABLE);
256 return(-1);
257 }
258
259 /* Ciphers supported */
260 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),p);
261 if (i == 0)
262 {
263 /* no ciphers */
264 SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
265 return(-1);
266 }
267 s2n(i,d);
268 p+=i;
269
270 /* put in the session-id, zero since there is no
271 * reuse. */
272#if 0
273 s->session->session_id_length=0;
274#endif
275 s2n(0,d);
276
277 if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
278 ch_len=SSL2_CHALLENGE_LENGTH;
279 else
280 ch_len=SSL2_MAX_CHALLENGE_LENGTH;
281
282 /* write out sslv2 challenge */
283 if (SSL3_RANDOM_SIZE < ch_len)
284 i=SSL3_RANDOM_SIZE;
285 else
286 i=ch_len;
287 s2n(i,d);
288 memset(&(s->s3->client_random[0]),0,SSL3_RANDOM_SIZE);
289 RAND_pseudo_bytes(&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
290 memcpy(p,&(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
291 p+=i;
292
293 i= p- &(buf[2]);
294 buf[0]=((i>>8)&0xff)|0x80;
295 buf[1]=(i&0xff);
296
297 s->state=SSL23_ST_CW_CLNT_HELLO_B;
298 /* number of bytes to write */
299 s->init_num=i+2;
300 s->init_off=0;
301
302 ssl3_finish_mac(s,&(buf[2]),i);
303 }
304
305 /* SSL3_ST_CW_CLNT_HELLO_B */
306 ret = ssl23_write_bytes(s);
307 if (ret >= 2)
308 if (s->msg_callback)
309 s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data+2, ret-2, s, s->msg_callback_arg); /* CLIENT-HELLO */
310 return ret;
311 }
312
313static int ssl23_get_server_hello(SSL *s)
314 {
315 char buf[8];
316 unsigned char *p;
317 int i;
318 int n;
319
320 n=ssl23_read_bytes(s,7);
321
322 if (n != 7) return(n);
323 p=s->packet;
324
325 memcpy(buf,p,n);
326
327 if ((p[0] & 0x80) && (p[2] == SSL2_MT_SERVER_HELLO) &&
328 (p[5] == 0x00) && (p[6] == 0x02))
329 {
330#ifdef OPENSSL_NO_SSL2
331 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
332 goto err;
333#else
334 /* we are talking sslv2 */
335 /* we need to clean up the SSLv3 setup and put in the
336 * sslv2 stuff. */
337 int ch_len;
338
339 if (s->options & SSL_OP_NO_SSLv2)
340 {
341 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
342 goto err;
343 }
344 if (s->s2 == NULL)
345 {
346 if (!ssl2_new(s))
347 goto err;
348 }
349 else
350 ssl2_clear(s);
351
352 if (s->options & SSL_OP_NETSCAPE_CHALLENGE_BUG)
353 ch_len=SSL2_CHALLENGE_LENGTH;
354 else
355 ch_len=SSL2_MAX_CHALLENGE_LENGTH;
356
357 /* write out sslv2 challenge */
358 i=(SSL3_RANDOM_SIZE < ch_len)
359 ?SSL3_RANDOM_SIZE:ch_len;
360 s->s2->challenge_length=i;
361 memcpy(s->s2->challenge,
362 &(s->s3->client_random[SSL3_RANDOM_SIZE-i]),i);
363
364 if (s->s3 != NULL) ssl3_free(s);
365
366 if (!BUF_MEM_grow(s->init_buf,
367 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
368 {
369 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,ERR_R_BUF_LIB);
370 goto err;
371 }
372
373 s->state=SSL2_ST_GET_SERVER_HELLO_A;
374 if (!(s->client_version == SSL2_VERSION))
375 /* use special padding (SSL 3.0 draft/RFC 2246, App. E.2) */
376 s->s2->ssl2_rollback=1;
377
378 /* setup the 5 bytes we have read so we get them from
379 * the sslv2 buffer */
380 s->rstate=SSL_ST_READ_HEADER;
381 s->packet_length=n;
382 s->packet= &(s->s2->rbuf[0]);
383 memcpy(s->packet,buf,n);
384 s->s2->rbuf_left=n;
385 s->s2->rbuf_offs=0;
386
387 /* we have already written one */
388 s->s2->write_sequence=1;
389
390 s->method=SSLv2_client_method();
391 s->handshake_func=s->method->ssl_connect;
392#endif
393 }
394 else if ((p[0] == SSL3_RT_HANDSHAKE) &&
395 (p[1] == SSL3_VERSION_MAJOR) &&
396 ((p[2] == SSL3_VERSION_MINOR) ||
397 (p[2] == TLS1_VERSION_MINOR)) &&
398 (p[5] == SSL3_MT_SERVER_HELLO))
399 {
400 /* we have sslv3 or tls1 */
401
402 if (!ssl_init_wbio_buffer(s,1)) goto err;
403
404 /* we are in this state */
405 s->state=SSL3_ST_CR_SRVR_HELLO_A;
406
407 /* put the 5 bytes we have read into the input buffer
408 * for SSLv3 */
409 s->rstate=SSL_ST_READ_HEADER;
410 s->packet_length=n;
411 s->packet= &(s->s3->rbuf.buf[0]);
412 memcpy(s->packet,buf,n);
413 s->s3->rbuf.left=n;
414 s->s3->rbuf.offset=0;
415
416 if ((p[2] == SSL3_VERSION_MINOR) &&
417 !(s->options & SSL_OP_NO_SSLv3))
418 {
419 s->version=SSL3_VERSION;
420 s->method=SSLv3_client_method();
421 }
422 else if ((p[2] == TLS1_VERSION_MINOR) &&
423 !(s->options & SSL_OP_NO_TLSv1))
424 {
425 s->version=TLS1_VERSION;
426 s->method=TLSv1_client_method();
427 }
428 else
429 {
430 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
431 goto err;
432 }
433
434 s->handshake_func=s->method->ssl_connect;
435 }
436 else if ((p[0] == SSL3_RT_ALERT) &&
437 (p[1] == SSL3_VERSION_MAJOR) &&
438 ((p[2] == SSL3_VERSION_MINOR) ||
439 (p[2] == TLS1_VERSION_MINOR)) &&
440 (p[3] == 0) &&
441 (p[4] == 2))
442 {
443 void (*cb)(const SSL *ssl,int type,int val)=NULL;
444 int j;
445
446 /* An alert */
447 if (s->info_callback != NULL)
448 cb=s->info_callback;
449 else if (s->ctx->info_callback != NULL)
450 cb=s->ctx->info_callback;
451
452 i=p[5];
453 if (cb != NULL)
454 {
455 j=(i<<8)|p[6];
456 cb(s,SSL_CB_READ_ALERT,j);
457 }
458
459 s->rwstate=SSL_NOTHING;
460 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]);
461 goto err;
462 }
463 else
464 {
465 SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNKNOWN_PROTOCOL);
466 goto err;
467 }
468 s->init_num=0;
469
470 /* Since, if we are sending a ssl23 client hello, we are not
471 * reusing a session-id */
472 if (!ssl_get_new_session(s,0))
473 goto err;
474
475 s->first_packet=1;
476 return(SSL_connect(s));
477err:
478 return(-1);
479 }
480
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