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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_srvr.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_srvr.c')
-rw-r--r--src/lib/libssl/s23_srvr.c589
1 files changed, 0 insertions, 589 deletions
diff --git a/src/lib/libssl/s23_srvr.c b/src/lib/libssl/s23_srvr.c
deleted file mode 100644
index 8743b61cbb..0000000000
--- a/src/lib/libssl/s23_srvr.c
+++ /dev/null
@@ -1,589 +0,0 @@
1/* ssl/s23_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 <stdio.h>
113#include "ssl_locl.h"
114#include <openssl/buffer.h>
115#include <openssl/rand.h>
116#include <openssl/objects.h>
117#include <openssl/evp.h>
118
119static SSL_METHOD *ssl23_get_server_method(int ver);
120int ssl23_get_client_hello(SSL *s);
121static SSL_METHOD *ssl23_get_server_method(int ver)
122 {
123#ifndef OPENSSL_NO_SSL2
124 if (ver == SSL2_VERSION)
125 return(SSLv2_server_method());
126#endif
127 if (ver == SSL3_VERSION)
128 return(SSLv3_server_method());
129 else if (ver == TLS1_VERSION)
130 return(TLSv1_server_method());
131 else
132 return(NULL);
133 }
134
135SSL_METHOD *SSLv23_server_method(void)
136 {
137 static int init=1;
138 static SSL_METHOD SSLv23_server_data;
139
140 if (init)
141 {
142 memcpy((char *)&SSLv23_server_data,
143 (char *)sslv23_base_method(),sizeof(SSL_METHOD));
144 SSLv23_server_data.ssl_accept=ssl23_accept;
145 SSLv23_server_data.get_ssl_method=ssl23_get_server_method;
146 init=0;
147 }
148 return(&SSLv23_server_data);
149 }
150
151int ssl23_accept(SSL *s)
152 {
153 BUF_MEM *buf;
154 unsigned long Time=time(NULL);
155 void (*cb)(const SSL *ssl,int type,int val)=NULL;
156 int ret= -1;
157 int new_state,state;
158
159 RAND_add(&Time,sizeof(Time),0);
160 ERR_clear_error();
161 clear_sys_error();
162
163 if (s->info_callback != NULL)
164 cb=s->info_callback;
165 else if (s->ctx->info_callback != NULL)
166 cb=s->ctx->info_callback;
167
168 s->in_handshake++;
169 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
170
171 for (;;)
172 {
173 state=s->state;
174
175 switch(s->state)
176 {
177 case SSL_ST_BEFORE:
178 case SSL_ST_ACCEPT:
179 case SSL_ST_BEFORE|SSL_ST_ACCEPT:
180 case SSL_ST_OK|SSL_ST_ACCEPT:
181
182 s->server=1;
183 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
184
185 /* s->version=SSL3_VERSION; */
186 s->type=SSL_ST_ACCEPT;
187
188 if (s->init_buf == NULL)
189 {
190 if ((buf=BUF_MEM_new()) == NULL)
191 {
192 ret= -1;
193 goto end;
194 }
195 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
196 {
197 ret= -1;
198 goto end;
199 }
200 s->init_buf=buf;
201 }
202
203 ssl3_init_finished_mac(s);
204
205 s->state=SSL23_ST_SR_CLNT_HELLO_A;
206 s->ctx->stats.sess_accept++;
207 s->init_num=0;
208 break;
209
210 case SSL23_ST_SR_CLNT_HELLO_A:
211 case SSL23_ST_SR_CLNT_HELLO_B:
212
213 s->shutdown=0;
214 ret=ssl23_get_client_hello(s);
215 if (ret >= 0) cb=NULL;
216 goto end;
217 /* break; */
218
219 default:
220 SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE);
221 ret= -1;
222 goto end;
223 /* break; */
224 }
225
226 if ((cb != NULL) && (s->state != state))
227 {
228 new_state=s->state;
229 s->state=state;
230 cb(s,SSL_CB_ACCEPT_LOOP,1);
231 s->state=new_state;
232 }
233 }
234end:
235 s->in_handshake--;
236 if (cb != NULL)
237 cb(s,SSL_CB_ACCEPT_EXIT,ret);
238 return(ret);
239 }
240
241
242int ssl23_get_client_hello(SSL *s)
243 {
244 char buf_space[11]; /* Request this many bytes in initial read.
245 * We can detect SSL 3.0/TLS 1.0 Client Hellos
246 * ('type == 3') correctly only when the following
247 * is in a single record, which is not guaranteed by
248 * the protocol specification:
249 * Byte Content
250 * 0 type \
251 * 1/2 version > record header
252 * 3/4 length /
253 * 5 msg_type \
254 * 6-8 length > Client Hello message
255 * 9/10 client_version /
256 */
257 char *buf= &(buf_space[0]);
258 unsigned char *p,*d,*d_len,*dd;
259 unsigned int i;
260 unsigned int csl,sil,cl;
261 int n=0,j;
262 int type=0;
263 int v[2];
264#ifndef OPENSSL_NO_RSA
265 int use_sslv2_strong=0;
266#endif
267
268 if (s->state == SSL23_ST_SR_CLNT_HELLO_A)
269 {
270 /* read the initial header */
271 v[0]=v[1]=0;
272
273 if (!ssl3_setup_buffers(s)) goto err;
274
275 n=ssl23_read_bytes(s, sizeof buf_space);
276 if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */
277
278 p=s->packet;
279
280 memcpy(buf,p,n);
281
282 if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO))
283 {
284 /*
285 * SSLv2 header
286 */
287 if ((p[3] == 0x00) && (p[4] == 0x02))
288 {
289 v[0]=p[3]; v[1]=p[4];
290 /* SSLv2 */
291 if (!(s->options & SSL_OP_NO_SSLv2))
292 type=1;
293 }
294 else if (p[3] == SSL3_VERSION_MAJOR)
295 {
296 v[0]=p[3]; v[1]=p[4];
297 /* SSLv3/TLSv1 */
298 if (p[4] >= TLS1_VERSION_MINOR)
299 {
300 if (!(s->options & SSL_OP_NO_TLSv1))
301 {
302 s->version=TLS1_VERSION;
303 /* type=2; */ /* done later to survive restarts */
304 s->state=SSL23_ST_SR_CLNT_HELLO_B;
305 }
306 else if (!(s->options & SSL_OP_NO_SSLv3))
307 {
308 s->version=SSL3_VERSION;
309 /* type=2; */
310 s->state=SSL23_ST_SR_CLNT_HELLO_B;
311 }
312 else if (!(s->options & SSL_OP_NO_SSLv2))
313 {
314 type=1;
315 }
316 }
317 else if (!(s->options & SSL_OP_NO_SSLv3))
318 {
319 s->version=SSL3_VERSION;
320 /* type=2; */
321 s->state=SSL23_ST_SR_CLNT_HELLO_B;
322 }
323 else if (!(s->options & SSL_OP_NO_SSLv2))
324 type=1;
325
326 }
327 }
328 else if ((p[0] == SSL3_RT_HANDSHAKE) &&
329 (p[1] == SSL3_VERSION_MAJOR) &&
330 (p[5] == SSL3_MT_CLIENT_HELLO) &&
331 ((p[3] == 0 && p[4] < 5 /* silly record length? */)
332 || (p[9] == p[1])))
333 {
334 /*
335 * SSLv3 or tls1 header
336 */
337
338 v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */
339 /* We must look at client_version inside the Client Hello message
340 * to get the correct minor version.
341 * However if we have only a pathologically small fragment of the
342 * Client Hello message, this would be difficult, and we'd have
343 * to read more records to find out.
344 * No known SSL 3.0 client fragments ClientHello like this,
345 * so we simply assume TLS 1.0 to avoid protocol version downgrade
346 * attacks. */
347 if (p[3] == 0 && p[4] < 6)
348 {
349#if 0
350 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL);
351 goto err;
352#else
353 v[1] = TLS1_VERSION_MINOR;
354#endif
355 }
356 else
357 v[1]=p[10]; /* minor version according to client_version */
358 if (v[1] >= TLS1_VERSION_MINOR)
359 {
360 if (!(s->options & SSL_OP_NO_TLSv1))
361 {
362 s->version=TLS1_VERSION;
363 type=3;
364 }
365 else if (!(s->options & SSL_OP_NO_SSLv3))
366 {
367 s->version=SSL3_VERSION;
368 type=3;
369 }
370 }
371 else
372 {
373 /* client requests SSL 3.0 */
374 if (!(s->options & SSL_OP_NO_SSLv3))
375 {
376 s->version=SSL3_VERSION;
377 type=3;
378 }
379 else if (!(s->options & SSL_OP_NO_TLSv1))
380 {
381 /* we won't be able to use TLS of course,
382 * but this will send an appropriate alert */
383 s->version=TLS1_VERSION;
384 type=3;
385 }
386 }
387 }
388 else if ((strncmp("GET ", (char *)p,4) == 0) ||
389 (strncmp("POST ",(char *)p,5) == 0) ||
390 (strncmp("HEAD ",(char *)p,5) == 0) ||
391 (strncmp("PUT ", (char *)p,4) == 0))
392 {
393 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST);
394 goto err;
395 }
396 else if (strncmp("CONNECT",(char *)p,7) == 0)
397 {
398 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST);
399 goto err;
400 }
401 }
402
403 if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
404 {
405 /* we have SSLv3/TLSv1 in an SSLv2 header
406 * (other cases skip this state) */
407
408 type=2;
409 p=s->packet;
410 v[0] = p[3]; /* == SSL3_VERSION_MAJOR */
411 v[1] = p[4];
412
413 n=((p[0]&0x7f)<<8)|p[1];
414 if (n > (1024*4))
415 {
416 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_LARGE);
417 goto err;
418 }
419
420 j=ssl23_read_bytes(s,n+2);
421 if (j <= 0) return(j);
422
423 ssl3_finish_mac(s, s->packet+2, s->packet_length-2);
424 if (s->msg_callback)
425 s->msg_callback(0, SSL2_VERSION, 0, s->packet+2, s->packet_length-2, s, s->msg_callback_arg); /* CLIENT-HELLO */
426
427 p=s->packet;
428 p+=5;
429 n2s(p,csl);
430 n2s(p,sil);
431 n2s(p,cl);
432 d=(unsigned char *)s->init_buf->data;
433 if ((csl+sil+cl+11) != s->packet_length)
434 {
435 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_LENGTH_MISMATCH);
436 goto err;
437 }
438
439 /* record header: msg_type ... */
440 *(d++) = SSL3_MT_CLIENT_HELLO;
441 /* ... and length (actual value will be written later) */
442 d_len = d;
443 d += 3;
444
445 /* client_version */
446 *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */
447 *(d++) = v[1];
448
449 /* lets populate the random area */
450 /* get the challenge_length */
451 i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl;
452 memset(d,0,SSL3_RANDOM_SIZE);
453 memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i);
454 d+=SSL3_RANDOM_SIZE;
455
456 /* no session-id reuse */
457 *(d++)=0;
458
459 /* ciphers */
460 j=0;
461 dd=d;
462 d+=2;
463 for (i=0; i<csl; i+=3)
464 {
465 if (p[i] != 0) continue;
466 *(d++)=p[i+1];
467 *(d++)=p[i+2];
468 j+=2;
469 }
470 s2n(j,dd);
471
472 /* COMPRESSION */
473 *(d++)=1;
474 *(d++)=0;
475
476 i = (d-(unsigned char *)s->init_buf->data) - 4;
477 l2n3((long)i, d_len);
478
479 /* get the data reused from the init_buf */
480 s->s3->tmp.reuse_message=1;
481 s->s3->tmp.message_type=SSL3_MT_CLIENT_HELLO;
482 s->s3->tmp.message_size=i;
483 }
484
485 /* imaginary new state (for program structure): */
486 /* s->state = SSL23_SR_CLNT_HELLO_C */
487
488 if (type == 1)
489 {
490#ifdef OPENSSL_NO_SSL2
491 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
492 goto err;
493#else
494 /* we are talking sslv2 */
495 /* we need to clean up the SSLv3/TLSv1 setup and put in the
496 * sslv2 stuff. */
497
498 if (s->s2 == NULL)
499 {
500 if (!ssl2_new(s))
501 goto err;
502 }
503 else
504 ssl2_clear(s);
505
506 if (s->s3 != NULL) ssl3_free(s);
507
508 if (!BUF_MEM_grow(s->init_buf,
509 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
510 {
511 goto err;
512 }
513
514 s->state=SSL2_ST_GET_CLIENT_HELLO_A;
515 if ((s->options & SSL_OP_MSIE_SSLV2_RSA_PADDING) ||
516 use_sslv2_strong ||
517 (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3))
518 s->s2->ssl2_rollback=0;
519 else
520 /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0
521 * (SSL 3.0 draft/RFC 2246, App. E.2) */
522 s->s2->ssl2_rollback=1;
523
524 /* setup the n bytes we have read so we get them from
525 * the sslv2 buffer */
526 s->rstate=SSL_ST_READ_HEADER;
527 s->packet_length=n;
528 s->packet= &(s->s2->rbuf[0]);
529 memcpy(s->packet,buf,n);
530 s->s2->rbuf_left=n;
531 s->s2->rbuf_offs=0;
532
533 s->method=SSLv2_server_method();
534 s->handshake_func=s->method->ssl_accept;
535#endif
536 }
537
538 if ((type == 2) || (type == 3))
539 {
540 /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */
541
542 if (!ssl_init_wbio_buffer(s,1)) goto err;
543
544 /* we are in this state */
545 s->state=SSL3_ST_SR_CLNT_HELLO_A;
546
547 if (type == 3)
548 {
549 /* put the 'n' bytes we have read into the input buffer
550 * for SSLv3 */
551 s->rstate=SSL_ST_READ_HEADER;
552 s->packet_length=n;
553 s->packet= &(s->s3->rbuf.buf[0]);
554 memcpy(s->packet,buf,n);
555 s->s3->rbuf.left=n;
556 s->s3->rbuf.offset=0;
557 }
558 else
559 {
560 s->packet_length=0;
561 s->s3->rbuf.left=0;
562 s->s3->rbuf.offset=0;
563 }
564
565 if (s->version == TLS1_VERSION)
566 s->method = TLSv1_server_method();
567 else
568 s->method = SSLv3_server_method();
569#if 0 /* ssl3_get_client_hello does this */
570 s->client_version=(v[0]<<8)|v[1];
571#endif
572 s->handshake_func=s->method->ssl_accept;
573 }
574
575 if ((type < 1) || (type > 3))
576 {
577 /* bad, very bad */
578 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNKNOWN_PROTOCOL);
579 goto err;
580 }
581 s->init_num=0;
582
583 if (buf != buf_space) OPENSSL_free(buf);
584 s->first_packet=1;
585 return(SSL_accept(s));
586err:
587 if (buf != buf_space) OPENSSL_free(buf);
588 return(-1);
589 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-20 11:26:20 +0000