1 /* ssl/s3_both.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) 1998-2002 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 <limits.h>
113 #include <string.h>
114 #include <stdio.h>
115 #include "ssl_locl.h"
116 #include <openssl/buffer.h>
117 #include <openssl/rand.h>
118 #include <openssl/objects.h>
119 #include <openssl/evp.h>
120 #include <openssl/x509.h>
121
122 __RCSID("$MirOS: src/lib/libssl/src/ssl/s3_both.c,v 1.2 2014/05/29 12:09:02 tg Exp $");
123
124 /* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */
ssl3_do_write(SSL * s,int type)125 int ssl3_do_write(SSL *s, int type)
126 {
127 int ret;
128
129 ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off],
130 s->init_num);
131 if (ret < 0) return(-1);
132 if (type == SSL3_RT_HANDSHAKE)
133 /* should not be done for 'Hello Request's, but in that case
134 * we'll ignore the result anyway */
135 ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret);
136
137 if (ret == s->init_num)
138 {
139 if (s->msg_callback)
140 s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg);
141 return(1);
142 }
143 s->init_off+=ret;
144 s->init_num-=ret;
145 return(0);
146 }
147
ssl3_send_finished(SSL * s,int a,int b,const char * sender,int slen)148 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
149 {
150 unsigned char *p,*d;
151 int i;
152 unsigned long l;
153
154 if (s->state == a)
155 {
156 d=(unsigned char *)s->init_buf->data;
157 p= &(d[4]);
158
159 i=s->method->ssl3_enc->final_finish_mac(s,
160 &(s->s3->finish_dgst1),
161 &(s->s3->finish_dgst2),
162 sender,slen,s->s3->tmp.finish_md);
163 s->s3->tmp.finish_md_len = i;
164 memcpy(p, s->s3->tmp.finish_md, i);
165 p+=i;
166 l=i;
167
168 #ifdef OPENSSL_SYS_WIN16
169 /* MSVC 1.5 does not clear the top bytes of the word unless
170 * I do this.
171 */
172 l&=0xffff;
173 #endif
174
175 *(d++)=SSL3_MT_FINISHED;
176 l2n3(l,d);
177 s->init_num=(int)l+4;
178 s->init_off=0;
179
180 s->state=b;
181 }
182
183 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
184 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
185 }
186
ssl3_get_finished(SSL * s,int a,int b)187 int ssl3_get_finished(SSL *s, int a, int b)
188 {
189 int al,i,ok;
190 long n;
191 unsigned char *p;
192
193 /* the mac has already been generated when we received the
194 * change cipher spec message and is in s->s3->tmp.peer_finish_md
195 */
196
197 n=ssl3_get_message(s,
198 a,
199 b,
200 SSL3_MT_FINISHED,
201 64, /* should actually be 36+4 :-) */
202 &ok);
203
204 if (!ok) return((int)n);
205
206 /* If this occurs, we have missed a message */
207 if (!s->s3->change_cipher_spec)
208 {
209 al=SSL_AD_UNEXPECTED_MESSAGE;
210 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS);
211 goto f_err;
212 }
213 s->s3->change_cipher_spec=0;
214
215 p = (unsigned char *)s->init_msg;
216 i = s->s3->tmp.peer_finish_md_len;
217
218 if (i != n)
219 {
220 al=SSL_AD_DECODE_ERROR;
221 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH);
222 goto f_err;
223 }
224
225 if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
226 {
227 al=SSL_AD_DECRYPT_ERROR;
228 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
229 goto f_err;
230 }
231
232 return(1);
233 f_err:
234 ssl3_send_alert(s,SSL3_AL_FATAL,al);
235 return(0);
236 }
237
238 /* for these 2 messages, we need to
239 * ssl->enc_read_ctx re-init
240 * ssl->s3->read_sequence zero
241 * ssl->s3->read_mac_secret re-init
242 * ssl->session->read_sym_enc assign
243 * ssl->session->read_compression assign
244 * ssl->session->read_hash assign
245 */
ssl3_send_change_cipher_spec(SSL * s,int a,int b)246 int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
247 {
248 unsigned char *p;
249
250 if (s->state == a)
251 {
252 p=(unsigned char *)s->init_buf->data;
253 *p=SSL3_MT_CCS;
254 s->init_num=1;
255 s->init_off=0;
256
257 s->state=b;
258 }
259
260 /* SSL3_ST_CW_CHANGE_B */
261 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
262 }
263
ssl3_output_cert_chain(SSL * s,X509 * x)264 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
265 {
266 unsigned char *p;
267 int n,i;
268 unsigned long l=7;
269 BUF_MEM *buf;
270 X509_STORE_CTX xs_ctx;
271 X509_OBJECT obj;
272
273 int no_chain;
274
275 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs)
276 no_chain = 1;
277 else
278 no_chain = 0;
279
280 /* TLSv1 sends a chain with nothing in it, instead of an alert */
281 buf=s->init_buf;
282 if (!BUF_MEM_grow_clean(buf,10))
283 {
284 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
285 return(0);
286 }
287 if (x != NULL)
288 {
289 if(!no_chain && !X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL))
290 {
291 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_X509_LIB);
292 return(0);
293 }
294
295 for (;;)
296 {
297 n=i2d_X509(x,NULL);
298 if (!BUF_MEM_grow_clean(buf,(int)(n+l+3)))
299 {
300 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
301 return(0);
302 }
303 p=(unsigned char *)&(buf->data[l]);
304 l2n3(n,p);
305 i2d_X509(x,&p);
306 l+=n+3;
307
308 if (no_chain)
309 break;
310
311 if (X509_NAME_cmp(X509_get_subject_name(x),
312 X509_get_issuer_name(x)) == 0) break;
313
314 i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509,
315 X509_get_issuer_name(x),&obj);
316 if (i <= 0) break;
317 x=obj.data.x509;
318 /* Count is one too high since the X509_STORE_get uped the
319 * ref count */
320 X509_free(x);
321 }
322 if (!no_chain)
323 X509_STORE_CTX_cleanup(&xs_ctx);
324 }
325
326 /* Thawte special :-) */
327 if (s->ctx->extra_certs != NULL)
328 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
329 {
330 x=sk_X509_value(s->ctx->extra_certs,i);
331 n=i2d_X509(x,NULL);
332 if (!BUF_MEM_grow_clean(buf,(int)(n+l+3)))
333 {
334 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
335 return(0);
336 }
337 p=(unsigned char *)&(buf->data[l]);
338 l2n3(n,p);
339 i2d_X509(x,&p);
340 l+=n+3;
341 }
342
343 l-=7;
344 p=(unsigned char *)&(buf->data[4]);
345 l2n3(l,p);
346 l+=3;
347 p=(unsigned char *)&(buf->data[0]);
348 *(p++)=SSL3_MT_CERTIFICATE;
349 l2n3(l,p);
350 l+=4;
351 return(l);
352 }
353
354 /* Obtain handshake message of message type 'mt' (any if mt == -1),
355 * maximum acceptable body length 'max'.
356 * The first four bytes (msg_type and length) are read in state 'st1',
357 * the body is read in state 'stn'.
358 */
ssl3_get_message(SSL * s,int st1,int stn,int mt,long max,int * ok)359 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
360 {
361 unsigned char *p;
362 unsigned long l;
363 long n;
364 int i,al;
365
366 if (s->s3->tmp.reuse_message)
367 {
368 s->s3->tmp.reuse_message=0;
369 if ((mt >= 0) && (s->s3->tmp.message_type != mt))
370 {
371 al=SSL_AD_UNEXPECTED_MESSAGE;
372 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
373 goto f_err;
374 }
375 *ok=1;
376 s->init_msg = s->init_buf->data + 4;
377 s->init_num = (int)s->s3->tmp.message_size;
378 return s->init_num;
379 }
380
381 p=(unsigned char *)s->init_buf->data;
382
383 if (s->state == st1) /* s->init_num < 4 */
384 {
385 int skip_message;
386
387 do
388 {
389 while (s->init_num < 4)
390 {
391 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
392 4 - s->init_num, 0);
393 if (i <= 0)
394 {
395 s->rwstate=SSL_READING;
396 *ok = 0;
397 return i;
398 }
399 s->init_num+=i;
400 }
401
402 skip_message = 0;
403 if (!s->server)
404 if (p[0] == SSL3_MT_HELLO_REQUEST)
405 /* The server may always send 'Hello Request' messages --
406 * we are doing a handshake anyway now, so ignore them
407 * if their format is correct. Does not count for
408 * 'Finished' MAC. */
409 if (p[1] == 0 && p[2] == 0 &&p[3] == 0)
410 {
411 s->init_num = 0;
412 skip_message = 1;
413
414 if (s->msg_callback)
415 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg);
416 }
417 }
418 while (skip_message);
419
420 /* s->init_num == 4 */
421
422 if ((mt >= 0) && (*p != mt))
423 {
424 al=SSL_AD_UNEXPECTED_MESSAGE;
425 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
426 goto f_err;
427 }
428 if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) &&
429 (st1 == SSL3_ST_SR_CERT_A) &&
430 (stn == SSL3_ST_SR_CERT_B))
431 {
432 /* At this point we have got an MS SGC second client
433 * hello (maybe we should always allow the client to
434 * start a new handshake?). We need to restart the mac.
435 * Don't increment {num,total}_renegotiations because
436 * we have not completed the handshake. */
437 ssl3_init_finished_mac(s);
438 }
439
440 s->s3->tmp.message_type= *(p++);
441
442 n2l3(p,l);
443 if (l > (unsigned long)max)
444 {
445 al=SSL_AD_ILLEGAL_PARAMETER;
446 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
447 goto f_err;
448 }
449 if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */
450 {
451 al=SSL_AD_ILLEGAL_PARAMETER;
452 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
453 goto f_err;
454 }
455 if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4))
456 {
457 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB);
458 goto err;
459 }
460 s->s3->tmp.message_size=l;
461 s->state=stn;
462
463 s->init_msg = s->init_buf->data + 4;
464 s->init_num = 0;
465 }
466
467 /* next state (stn) */
468 p = s->init_msg;
469 n = s->s3->tmp.message_size - s->init_num;
470 while (n > 0)
471 {
472 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0);
473 if (i <= 0)
474 {
475 s->rwstate=SSL_READING;
476 *ok = 0;
477 return i;
478 }
479 s->init_num += i;
480 n -= i;
481 }
482 ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4);
483 if (s->msg_callback)
484 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg);
485 *ok=1;
486 return s->init_num;
487 f_err:
488 ssl3_send_alert(s,SSL3_AL_FATAL,al);
489 err:
490 *ok=0;
491 return(-1);
492 }
493
ssl_cert_type(X509 * x,EVP_PKEY * pkey)494 int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
495 {
496 EVP_PKEY *pk;
497 int ret= -1,i,j;
498
499 if (pkey == NULL)
500 pk=X509_get_pubkey(x);
501 else
502 pk=pkey;
503 if (pk == NULL) goto err;
504
505 i=pk->type;
506 if (i == EVP_PKEY_RSA)
507 {
508 ret=SSL_PKEY_RSA_ENC;
509 if (x != NULL)
510 {
511 j=X509_get_ext_count(x);
512 /* check to see if this is a signing only certificate */
513 /* EAY EAY EAY EAY */
514 }
515 }
516 else if (i == EVP_PKEY_DSA)
517 {
518 ret=SSL_PKEY_DSA_SIGN;
519 }
520 else if (i == EVP_PKEY_DH)
521 {
522 /* if we just have a key, we needs to be guess */
523
524 if (x == NULL)
525 ret=SSL_PKEY_DH_DSA;
526 else
527 {
528 j=X509_get_signature_type(x);
529 if (j == EVP_PKEY_RSA)
530 ret=SSL_PKEY_DH_RSA;
531 else if (j== EVP_PKEY_DSA)
532 ret=SSL_PKEY_DH_DSA;
533 else ret= -1;
534 }
535 }
536 else
537 ret= -1;
538
539 err:
540 if(!pkey) EVP_PKEY_free(pk);
541 return(ret);
542 }
543
ssl_verify_alarm_type(long type)544 int ssl_verify_alarm_type(long type)
545 {
546 int al;
547
548 switch(type)
549 {
550 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
551 case X509_V_ERR_UNABLE_TO_GET_CRL:
552 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
553 al=SSL_AD_UNKNOWN_CA;
554 break;
555 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
556 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
557 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
558 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
559 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
560 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
561 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
562 case X509_V_ERR_CERT_NOT_YET_VALID:
563 case X509_V_ERR_CRL_NOT_YET_VALID:
564 case X509_V_ERR_CERT_UNTRUSTED:
565 case X509_V_ERR_CERT_REJECTED:
566 al=SSL_AD_BAD_CERTIFICATE;
567 break;
568 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
569 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
570 al=SSL_AD_DECRYPT_ERROR;
571 break;
572 case X509_V_ERR_CERT_HAS_EXPIRED:
573 case X509_V_ERR_CRL_HAS_EXPIRED:
574 al=SSL_AD_CERTIFICATE_EXPIRED;
575 break;
576 case X509_V_ERR_CERT_REVOKED:
577 al=SSL_AD_CERTIFICATE_REVOKED;
578 break;
579 case X509_V_ERR_OUT_OF_MEM:
580 al=SSL_AD_INTERNAL_ERROR;
581 break;
582 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
583 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
584 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
585 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
586 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
587 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
588 case X509_V_ERR_INVALID_CA:
589 al=SSL_AD_UNKNOWN_CA;
590 break;
591 case X509_V_ERR_APPLICATION_VERIFICATION:
592 al=SSL_AD_HANDSHAKE_FAILURE;
593 break;
594 case X509_V_ERR_INVALID_PURPOSE:
595 al=SSL_AD_UNSUPPORTED_CERTIFICATE;
596 break;
597 default:
598 al=SSL_AD_CERTIFICATE_UNKNOWN;
599 break;
600 }
601 return(al);
602 }
603
604 int ssl3_setup_write_buffer(SSL *s);
ssl3_setup_buffers(SSL * s)605 int ssl3_setup_buffers(SSL *s)
606 {
607 unsigned char *p;
608 unsigned int extra;
609 size_t len;
610
611 if (s->s3->rbuf.buf == NULL)
612 {
613 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
614 extra=SSL3_RT_MAX_EXTRA;
615 else
616 extra=0;
617 len = SSL3_RT_MAX_PACKET_SIZE + extra;
618 if ((p=OPENSSL_malloc(len)) == NULL)
619 goto err;
620 s->s3->rbuf.buf = p;
621 s->s3->rbuf.len = len;
622 }
623 if (!ssl3_setup_write_buffer(s))
624 return(0);
625 s->packet= &(s->s3->rbuf.buf[0]);
626 return(1);
627 err:
628 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);
629 return(0);
630 }
631
ssl3_setup_write_buffer(SSL * s)632 int ssl3_setup_write_buffer(SSL *s)
633 {
634 unsigned char *p;
635 size_t len;
636
637 if (s->s3->wbuf.buf == NULL)
638 {
639 len = SSL3_RT_MAX_PACKET_SIZE;
640 len += SSL3_RT_HEADER_LENGTH + 256; /* extra space for empty fragment */
641 if ((p=OPENSSL_malloc(len)) == NULL)
642 goto err;
643 s->s3->wbuf.buf = p;
644 s->s3->wbuf.len = len;
645 }
646 return(1);
647 err:
648 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);
649 return(0);
650 }
651