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diff --git a/src/lib/libssl/ssl_both.c b/src/lib/libssl/ssl_both.c
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1/* $OpenBSD: ssl_both.c,v 1.1 2017/01/26 05:51:54 jsing Exp $ */
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 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116
117#include <limits.h>
118#include <stdio.h>
119#include <string.h>
120
121#include "ssl_locl.h"
122
123#include <openssl/buffer.h>
124#include <openssl/evp.h>
125#include <openssl/objects.h>
126#include <openssl/x509.h>
127
128#include "bytestring.h"
129
130/*
131 * Send s->internal->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or
132 * SSL3_RT_CHANGE_CIPHER_SPEC).
133 */
134int
135ssl3_do_write(SSL *s, int type)
136{
137 int ret;
138
139 ret = ssl3_write_bytes(s, type, &s->internal->init_buf->data[s->internal->init_off],
140 s->internal->init_num);
141 if (ret < 0)
142 return (-1);
143
144 if (type == SSL3_RT_HANDSHAKE)
145 /*
146 * Should not be done for 'Hello Request's, but in that case
147 * we'll ignore the result anyway.
148 */
149 tls1_finish_mac(s,
150 (unsigned char *)&s->internal->init_buf->data[s->internal->init_off], ret);
151
152 if (ret == s->internal->init_num) {
153 if (s->internal->msg_callback)
154 s->internal->msg_callback(1, s->version, type, s->internal->init_buf->data,
155 (size_t)(s->internal->init_off + s->internal->init_num), s,
156 s->internal->msg_callback_arg);
157 return (1);
158 }
159
160 s->internal->init_off += ret;
161 s->internal->init_num -= ret;
162
163 return (0);
164}
165
166int
167ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
168{
169 unsigned char *p;
170 int md_len;
171
172 if (s->internal->state == a) {
173 md_len = s->method->internal->ssl3_enc->finish_mac_length;
174 OPENSSL_assert(md_len <= EVP_MAX_MD_SIZE);
175
176 if (s->method->internal->ssl3_enc->final_finish_mac(s, sender, slen,
177 S3I(s)->tmp.finish_md) != md_len)
178 return (0);
179 S3I(s)->tmp.finish_md_len = md_len;
180
181 /* Copy finished so we can use it for renegotiation checks. */
182 if (s->internal->type == SSL_ST_CONNECT) {
183 memcpy(S3I(s)->previous_client_finished,
184 S3I(s)->tmp.finish_md, md_len);
185 S3I(s)->previous_client_finished_len = md_len;
186 } else {
187 memcpy(S3I(s)->previous_server_finished,
188 S3I(s)->tmp.finish_md, md_len);
189 S3I(s)->previous_server_finished_len = md_len;
190 }
191
192 p = ssl3_handshake_msg_start(s, SSL3_MT_FINISHED);
193 memcpy(p, S3I(s)->tmp.finish_md, md_len);
194 ssl3_handshake_msg_finish(s, md_len);
195
196 s->internal->state = b;
197 }
198
199 return (ssl3_handshake_write(s));
200}
201
202/*
203 * ssl3_take_mac calculates the Finished MAC for the handshakes messages seen
204 * so far.
205 */
206static void
207ssl3_take_mac(SSL *s)
208{
209 const char *sender;
210 int slen;
211
212 /*
213 * If no new cipher setup return immediately: other functions will
214 * set the appropriate error.
215 */
216 if (S3I(s)->tmp.new_cipher == NULL)
217 return;
218
219 if (s->internal->state & SSL_ST_CONNECT) {
220 sender = s->method->internal->ssl3_enc->server_finished_label;
221 slen = s->method->internal->ssl3_enc->server_finished_label_len;
222 } else {
223 sender = s->method->internal->ssl3_enc->client_finished_label;
224 slen = s->method->internal->ssl3_enc->client_finished_label_len;
225 }
226
227 S3I(s)->tmp.peer_finish_md_len =
228 s->method->internal->ssl3_enc->final_finish_mac(s, sender, slen,
229 S3I(s)->tmp.peer_finish_md);
230}
231
232int
233ssl3_get_finished(SSL *s, int a, int b)
234{
235 int al, ok, md_len;
236 long n;
237 CBS cbs;
238
239 /* should actually be 36+4 :-) */
240 n = s->method->internal->ssl_get_message(s, a, b, SSL3_MT_FINISHED, 64, &ok);
241 if (!ok)
242 return ((int)n);
243
244 /* If this occurs, we have missed a message */
245 if (!S3I(s)->change_cipher_spec) {
246 al = SSL_AD_UNEXPECTED_MESSAGE;
247 SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
248 goto f_err;
249 }
250 S3I(s)->change_cipher_spec = 0;
251
252 md_len = s->method->internal->ssl3_enc->finish_mac_length;
253
254 if (n < 0) {
255 al = SSL_AD_DECODE_ERROR;
256 SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_BAD_DIGEST_LENGTH);
257 goto f_err;
258 }
259
260 CBS_init(&cbs, s->internal->init_msg, n);
261
262 if (S3I(s)->tmp.peer_finish_md_len != md_len ||
263 CBS_len(&cbs) != md_len) {
264 al = SSL_AD_DECODE_ERROR;
265 SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_BAD_DIGEST_LENGTH);
266 goto f_err;
267 }
268
269 if (!CBS_mem_equal(&cbs, S3I(s)->tmp.peer_finish_md, CBS_len(&cbs))) {
270 al = SSL_AD_DECRYPT_ERROR;
271 SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_DIGEST_CHECK_FAILED);
272 goto f_err;
273 }
274
275 /* Copy finished so we can use it for renegotiation checks. */
276 OPENSSL_assert(md_len <= EVP_MAX_MD_SIZE);
277 if (s->internal->type == SSL_ST_ACCEPT) {
278 memcpy(S3I(s)->previous_client_finished,
279 S3I(s)->tmp.peer_finish_md, md_len);
280 S3I(s)->previous_client_finished_len = md_len;
281 } else {
282 memcpy(S3I(s)->previous_server_finished,
283 S3I(s)->tmp.peer_finish_md, md_len);
284 S3I(s)->previous_server_finished_len = md_len;
285 }
286
287 return (1);
288f_err:
289 ssl3_send_alert(s, SSL3_AL_FATAL, al);
290 return (0);
291}
292
293/* for these 2 messages, we need to
294 * ssl->enc_read_ctx re-init
295 * ssl->s3->internal->read_sequence zero
296 * ssl->s3->internal->read_mac_secret re-init
297 * ssl->session->read_sym_enc assign
298 * ssl->session->read_hash assign
299 */
300int
301ssl3_send_change_cipher_spec(SSL *s, int a, int b)
302{
303 unsigned char *p;
304
305 if (s->internal->state == a) {
306 p = (unsigned char *)s->internal->init_buf->data;
307 *p = SSL3_MT_CCS;
308 s->internal->init_num = 1;
309 s->internal->init_off = 0;
310
311 s->internal->state = b;
312 }
313
314 /* SSL3_ST_CW_CHANGE_B */
315 return (ssl3_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC));
316}
317
318static int
319ssl3_add_cert(CBB *cbb, X509 *x)
320{
321 unsigned char *data;
322 int cert_len;
323 int ret = 0;
324 CBB cert;
325
326 if ((cert_len = i2d_X509(x, NULL)) < 0)
327 goto err;
328
329 if (!CBB_add_u24_length_prefixed(cbb, &cert))
330 goto err;
331 if (!CBB_add_space(&cert, &data, cert_len))
332 goto err;
333 if (i2d_X509(x, &data) < 0)
334 goto err;
335 if (!CBB_flush(cbb))
336 goto err;
337
338 ret = 1;
339
340 err:
341 return (ret);
342}
343
344int
345ssl3_output_cert_chain(SSL *s, CBB *cbb, X509 *x)
346{
347 int no_chain = 0;
348 CBB cert_list;
349 int ret = 0;
350 int i;
351
352 if (!CBB_add_u24_length_prefixed(cbb, &cert_list))
353 goto err;
354
355 if ((s->internal->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs)
356 no_chain = 1;
357
358 /* TLSv1 sends a chain with nothing in it, instead of an alert. */
359 if (x != NULL) {
360 if (no_chain) {
361 if (!ssl3_add_cert(&cert_list, x))
362 goto err;
363 } else {
364 X509_STORE_CTX xs_ctx;
365
366 if (!X509_STORE_CTX_init(&xs_ctx, s->ctx->cert_store,
367 x, NULL)) {
368 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,
369 ERR_R_X509_LIB);
370 goto err;
371 }
372 X509_verify_cert(&xs_ctx);
373
374 /* Don't leave errors in the queue. */
375 ERR_clear_error();
376 for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
377 x = sk_X509_value(xs_ctx.chain, i);
378 if (!ssl3_add_cert(&cert_list, x)) {
379 X509_STORE_CTX_cleanup(&xs_ctx);
380 goto err;
381 }
382 }
383 X509_STORE_CTX_cleanup(&xs_ctx);
384 }
385 }
386
387 /* Thawte special :-) */
388 for (i = 0; i < sk_X509_num(s->ctx->extra_certs); i++) {
389 x = sk_X509_value(s->ctx->extra_certs, i);
390 if (!ssl3_add_cert(&cert_list, x))
391 goto err;
392 }
393
394 if (!CBB_flush(cbb))
395 goto err;
396
397 ret = 1;
398
399 err:
400 return (ret);
401}
402
403/*
404 * Obtain handshake message of message type 'mt' (any if mt == -1),
405 * maximum acceptable body length 'max'.
406 * The first four bytes (msg_type and length) are read in state 'st1',
407 * the body is read in state 'stn'.
408 */
409long
410ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
411{
412 unsigned char *p;
413 uint32_t l;
414 long n;
415 int i, al;
416 CBS cbs;
417 uint8_t u8;
418
419 if (S3I(s)->tmp.reuse_message) {
420 S3I(s)->tmp.reuse_message = 0;
421 if ((mt >= 0) && (S3I(s)->tmp.message_type != mt)) {
422 al = SSL_AD_UNEXPECTED_MESSAGE;
423 SSLerr(SSL_F_SSL3_GET_MESSAGE,
424 SSL_R_UNEXPECTED_MESSAGE);
425 goto f_err;
426 }
427 *ok = 1;
428 s->internal->init_msg = s->internal->init_buf->data + 4;
429 s->internal->init_num = (int)S3I(s)->tmp.message_size;
430 return s->internal->init_num;
431 }
432
433 p = (unsigned char *)s->internal->init_buf->data;
434
435 /* s->internal->init_num < 4 */
436 if (s->internal->state == st1) {
437 int skip_message;
438
439 do {
440 while (s->internal->init_num < 4) {
441 i = s->method->internal->ssl_read_bytes(s,
442 SSL3_RT_HANDSHAKE, &p[s->internal->init_num],
443 4 - s->internal->init_num, 0);
444 if (i <= 0) {
445 s->internal->rwstate = SSL_READING;
446 *ok = 0;
447 return i;
448 }
449 s->internal->init_num += i;
450 }
451
452 skip_message = 0;
453 if (!s->server && p[0] == SSL3_MT_HELLO_REQUEST) {
454 /*
455 * The server may always send 'Hello Request'
456 * messages -- we are doing a handshake anyway
457 * now, so ignore them if their format is
458 * correct. Does not count for 'Finished' MAC.
459 */
460 if (p[1] == 0 && p[2] == 0 &&p[3] == 0) {
461 s->internal->init_num = 0;
462 skip_message = 1;
463
464 if (s->internal->msg_callback)
465 s->internal->msg_callback(0, s->version,
466 SSL3_RT_HANDSHAKE, p, 4, s,
467 s->internal->msg_callback_arg);
468 }
469 }
470 } while (skip_message);
471
472 /* s->internal->init_num == 4 */
473
474 if ((mt >= 0) && (*p != mt)) {
475 al = SSL_AD_UNEXPECTED_MESSAGE;
476 SSLerr(SSL_F_SSL3_GET_MESSAGE,
477 SSL_R_UNEXPECTED_MESSAGE);
478 goto f_err;
479 }
480
481 CBS_init(&cbs, p, 4);
482 if (!CBS_get_u8(&cbs, &u8) ||
483 !CBS_get_u24(&cbs, &l)) {
484 SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB);
485 goto err;
486 }
487 S3I(s)->tmp.message_type = u8;
488
489 if (l > (unsigned long)max) {
490 al = SSL_AD_ILLEGAL_PARAMETER;
491 SSLerr(SSL_F_SSL3_GET_MESSAGE,
492 SSL_R_EXCESSIVE_MESSAGE_SIZE);
493 goto f_err;
494 }
495 if (l && !BUF_MEM_grow_clean(s->internal->init_buf, l + 4)) {
496 SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB);
497 goto err;
498 }
499 S3I(s)->tmp.message_size = l;
500 s->internal->state = stn;
501
502 s->internal->init_msg = s->internal->init_buf->data + 4;
503 s->internal->init_num = 0;
504 }
505
506 /* next state (stn) */
507 p = s->internal->init_msg;
508 n = S3I(s)->tmp.message_size - s->internal->init_num;
509 while (n > 0) {
510 i = s->method->internal->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
511 &p[s->internal->init_num], n, 0);
512 if (i <= 0) {
513 s->internal->rwstate = SSL_READING;
514 *ok = 0;
515 return i;
516 }
517 s->internal->init_num += i;
518 n -= i;
519 }
520
521 /* If receiving Finished, record MAC of prior handshake messages for
522 * Finished verification. */
523 if (*s->internal->init_buf->data == SSL3_MT_FINISHED)
524 ssl3_take_mac(s);
525
526 /* Feed this message into MAC computation. */
527 if (s->internal->mac_packet) {
528 tls1_finish_mac(s, (unsigned char *)s->internal->init_buf->data,
529 s->internal->init_num + 4);
530 s->internal->mac_packet = 0;
531
532 if (s->internal->msg_callback)
533 s->internal->msg_callback(0, s->version,
534 SSL3_RT_HANDSHAKE, s->internal->init_buf->data,
535 (size_t)s->internal->init_num + 4, s,
536 s->internal->msg_callback_arg);
537 }
538
539 *ok = 1;
540 return (s->internal->init_num);
541
542f_err:
543 ssl3_send_alert(s, SSL3_AL_FATAL, al);
544err:
545 *ok = 0;
546 return (-1);
547}
548
549int
550ssl_cert_type(X509 *x, EVP_PKEY *pkey)
551{
552 EVP_PKEY *pk;
553 int ret = -1, i;
554
555 if (pkey == NULL)
556 pk = X509_get_pubkey(x);
557 else
558 pk = pkey;
559 if (pk == NULL)
560 goto err;
561
562 i = pk->type;
563 if (i == EVP_PKEY_RSA) {
564 ret = SSL_PKEY_RSA_ENC;
565 } else if (i == EVP_PKEY_DSA) {
566 ret = SSL_PKEY_DSA_SIGN;
567 } else if (i == EVP_PKEY_EC) {
568 ret = SSL_PKEY_ECC;
569 } else if (i == NID_id_GostR3410_2001 ||
570 i == NID_id_GostR3410_2001_cc) {
571 ret = SSL_PKEY_GOST01;
572 }
573
574err:
575 if (!pkey)
576 EVP_PKEY_free(pk);
577 return (ret);
578}
579
580int
581ssl_verify_alarm_type(long type)
582{
583 int al;
584
585 switch (type) {
586 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
587 case X509_V_ERR_UNABLE_TO_GET_CRL:
588 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
589 al = SSL_AD_UNKNOWN_CA;
590 break;
591 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
592 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
593 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
594 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
595 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
596 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
597 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
598 case X509_V_ERR_CERT_NOT_YET_VALID:
599 case X509_V_ERR_CRL_NOT_YET_VALID:
600 case X509_V_ERR_CERT_UNTRUSTED:
601 case X509_V_ERR_CERT_REJECTED:
602 al = SSL_AD_BAD_CERTIFICATE;
603 break;
604 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
605 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
606 al = SSL_AD_DECRYPT_ERROR;
607 break;
608 case X509_V_ERR_CERT_HAS_EXPIRED:
609 case X509_V_ERR_CRL_HAS_EXPIRED:
610 al = SSL_AD_CERTIFICATE_EXPIRED;
611 break;
612 case X509_V_ERR_CERT_REVOKED:
613 al = SSL_AD_CERTIFICATE_REVOKED;
614 break;
615 case X509_V_ERR_OUT_OF_MEM:
616 al = SSL_AD_INTERNAL_ERROR;
617 break;
618 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
619 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
620 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
621 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
622 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
623 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
624 case X509_V_ERR_INVALID_CA:
625 al = SSL_AD_UNKNOWN_CA;
626 break;
627 case X509_V_ERR_APPLICATION_VERIFICATION:
628 al = SSL_AD_HANDSHAKE_FAILURE;
629 break;
630 case X509_V_ERR_INVALID_PURPOSE:
631 al = SSL_AD_UNSUPPORTED_CERTIFICATE;
632 break;
633 default:
634 al = SSL_AD_CERTIFICATE_UNKNOWN;
635 break;
636 }
637 return (al);
638}
639
640int
641ssl3_setup_init_buffer(SSL *s)
642{
643 BUF_MEM *buf = NULL;
644
645 if (s->internal->init_buf != NULL)
646 return (1);
647
648 if ((buf = BUF_MEM_new()) == NULL)
649 goto err;
650 if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH))
651 goto err;
652
653 s->internal->init_buf = buf;
654 return (1);
655
656err:
657 BUF_MEM_free(buf);
658 return (0);
659}
660
661int
662ssl3_setup_read_buffer(SSL *s)
663{
664 unsigned char *p;
665 size_t len, align, headerlen;
666
667 if (SSL_IS_DTLS(s))
668 headerlen = DTLS1_RT_HEADER_LENGTH;
669 else
670 headerlen = SSL3_RT_HEADER_LENGTH;
671
672 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
673
674 if (s->s3->rbuf.buf == NULL) {
675 len = SSL3_RT_MAX_PLAIN_LENGTH +
676 SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
677 if ((p = malloc(len)) == NULL)
678 goto err;
679 s->s3->rbuf.buf = p;
680 s->s3->rbuf.len = len;
681 }
682
683 s->internal->packet = &(s->s3->rbuf.buf[0]);
684 return 1;
685
686err:
687 SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER, ERR_R_MALLOC_FAILURE);
688 return 0;
689}
690
691int
692ssl3_setup_write_buffer(SSL *s)
693{
694 unsigned char *p;
695 size_t len, align, headerlen;
696
697 if (SSL_IS_DTLS(s))
698 headerlen = DTLS1_RT_HEADER_LENGTH + 1;
699 else
700 headerlen = SSL3_RT_HEADER_LENGTH;
701
702 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
703
704 if (s->s3->wbuf.buf == NULL) {
705 len = s->max_send_fragment +
706 SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
707 if (!(s->internal->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
708 len += headerlen + align +
709 SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
710
711 if ((p = malloc(len)) == NULL)
712 goto err;
713 s->s3->wbuf.buf = p;
714 s->s3->wbuf.len = len;
715 }
716
717 return 1;
718
719err:
720 SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE);
721 return 0;
722}
723
724int
725ssl3_setup_buffers(SSL *s)
726{
727 if (!ssl3_setup_read_buffer(s))
728 return 0;
729 if (!ssl3_setup_write_buffer(s))
730 return 0;
731 return 1;
732}
733
734int
735ssl3_release_write_buffer(SSL *s)
736{
737 free(s->s3->wbuf.buf);
738 s->s3->wbuf.buf = NULL;
739 return 1;
740}
741
742int
743ssl3_release_read_buffer(SSL *s)
744{
745 free(s->s3->rbuf.buf);
746 s->s3->rbuf.buf = NULL;
747 return 1;
748}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-26 18:31:26 +0000