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1/* $OpenBSD: s3_both.c,v 1.48 2015/09/12 15:03:39 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->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->init_buf->data[s->init_off],
140 s->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->init_buf->data[s->init_off], ret);
151
152 if (ret == s->init_num) {
153 if (s->msg_callback)
154 s->msg_callback(1, s->version, type, s->init_buf->data,
155 (size_t)(s->init_off + s->init_num), s,
156 s->msg_callback_arg);
157 return (1);
158 }
159
160 s->init_off += ret;
161 s->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->state == a) {
173 md_len = s->method->ssl3_enc->finish_mac_length;
174 OPENSSL_assert(md_len <= EVP_MAX_MD_SIZE);
175
176 if (s->method->ssl3_enc->final_finish_mac(s, sender, slen,
177 s->s3->tmp.finish_md) != md_len)
178 return (0);
179 s->s3->tmp.finish_md_len = md_len;
180
181 /* Copy finished so we can use it for renegotiation checks. */
182 if (s->type == SSL_ST_CONNECT) {
183 memcpy(s->s3->previous_client_finished,
184 s->s3->tmp.finish_md, md_len);
185 s->s3->previous_client_finished_len = md_len;
186 } else {
187 memcpy(s->s3->previous_server_finished,
188 s->s3->tmp.finish_md, md_len);
189 s->s3->previous_server_finished_len = md_len;
190 }
191
192 p = ssl3_handshake_msg_start(s, SSL3_MT_FINISHED);
193 memcpy(p, s->s3->tmp.finish_md, md_len);
194 ssl3_handshake_msg_finish(s, md_len);
195
196 s->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 (s->s3->tmp.new_cipher == NULL)
217 return;
218
219 if (s->state & SSL_ST_CONNECT) {
220 sender = s->method->ssl3_enc->server_finished_label;
221 slen = s->method->ssl3_enc->server_finished_label_len;
222 } else {
223 sender = s->method->ssl3_enc->client_finished_label;
224 slen = s->method->ssl3_enc->client_finished_label_len;
225 }
226
227 s->s3->tmp.peer_finish_md_len =
228 s->method->ssl3_enc->final_finish_mac(s, sender, slen,
229 s->s3->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->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 (!s->s3->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 s->s3->change_cipher_spec = 0;
251
252 md_len = s->method->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->init_msg, n);
261
262 if (s->s3->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, s->s3->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->type == SSL_ST_ACCEPT) {
278 memcpy(s->s3->previous_client_finished,
279 s->s3->tmp.peer_finish_md, md_len);
280 s->s3->previous_client_finished_len = md_len;
281 } else {
282 memcpy(s->s3->previous_server_finished,
283 s->s3->tmp.peer_finish_md, md_len);
284 s->s3->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->read_sequence zero
296 * ssl->s3->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->state == a) {
306 p = (unsigned char *)s->init_buf->data;
307 *p = SSL3_MT_CCS;
308 s->init_num = 1;
309 s->init_off = 0;
310
311 s->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_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x)
320{
321 int n;
322 unsigned char *p;
323
324 n = i2d_X509(x, NULL);
325 if (!BUF_MEM_grow_clean(buf, n + (*l) + 3)) {
326 SSLerr(SSL_F_SSL3_ADD_CERT_TO_BUF, ERR_R_BUF_LIB);
327 return (-1);
328 }
329 /* XXX */
330 p = (unsigned char *)&(buf->data[*l]);
331 l2n3(n, p);
332 i2d_X509(x, &p);
333 *l += n + 3;
334
335 return (0);
336}
337
338unsigned long
339ssl3_output_cert_chain(SSL *s, X509 *x)
340{
341 unsigned char *p;
342 unsigned long l = ssl3_handshake_msg_hdr_len(s) + 3;
343 BUF_MEM *buf;
344 int no_chain;
345 int i;
346
347 if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || s->ctx->extra_certs)
348 no_chain = 1;
349 else
350 no_chain = 0;
351
352 /* TLSv1 sends a chain with nothing in it, instead of an alert */
353 buf = s->init_buf;
354 if (!BUF_MEM_grow_clean(buf, ssl3_handshake_msg_hdr_len(s) + 6)) {
355 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN, ERR_R_BUF_LIB);
356 return (0);
357 }
358 if (x != NULL) {
359 if (no_chain) {
360 if (ssl3_add_cert_to_buf(buf, &l, x))
361 return (0);
362 } else {
363 X509_STORE_CTX xs_ctx;
364
365 if (!X509_STORE_CTX_init(&xs_ctx, s->ctx->cert_store,
366 x, NULL)) {
367 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,
368 ERR_R_X509_LIB);
369 return (0);
370 }
371 X509_verify_cert(&xs_ctx);
372
373 /* Don't leave errors in the queue. */
374 ERR_clear_error();
375 for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
376 x = sk_X509_value(xs_ctx.chain, i);
377 if (ssl3_add_cert_to_buf(buf, &l, x)) {
378 X509_STORE_CTX_cleanup(&xs_ctx);
379 return 0;
380 }
381 }
382 X509_STORE_CTX_cleanup(&xs_ctx);
383 }
384 }
385 /* Thawte special :-) */
386 for (i = 0; i < sk_X509_num(s->ctx->extra_certs); i++) {
387 x = sk_X509_value(s->ctx->extra_certs, i);
388 if (ssl3_add_cert_to_buf(buf, &l, x))
389 return (0);
390 }
391
392 l -= ssl3_handshake_msg_hdr_len(s) + 3;
393 p = (unsigned char *)&(buf->data[4]);
394 l2n3(l, p);
395 l += 3;
396 p = (unsigned char *)&(buf->data[0]);
397 *(p++) = SSL3_MT_CERTIFICATE;
398 l2n3(l, p);
399 l += 4; /* XXX */
400 return (l);
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 (s->s3->tmp.reuse_message) {
420 s->s3->tmp.reuse_message = 0;
421 if ((mt >= 0) && (s->s3->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->init_msg = s->init_buf->data + 4;
429 s->init_num = (int)s->s3->tmp.message_size;
430 return s->init_num;
431 }
432
433 p = (unsigned char *)s->init_buf->data;
434
435 /* s->init_num < 4 */
436 if (s->state == st1) {
437 int skip_message;
438
439 do {
440 while (s->init_num < 4) {
441 i = s->method->ssl_read_bytes(s,
442 SSL3_RT_HANDSHAKE, &p[s->init_num],
443 4 - s->init_num, 0);
444 if (i <= 0) {
445 s->rwstate = SSL_READING;
446 *ok = 0;
447 return i;
448 }
449 s->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->init_num = 0;
462 skip_message = 1;
463
464 if (s->msg_callback)
465 s->msg_callback(0, s->version,
466 SSL3_RT_HANDSHAKE, p, 4, s,
467 s->msg_callback_arg);
468 }
469 }
470 } while (skip_message);
471
472 /* s->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 /* XXX remove call to n2l3 */
482 CBS_init(&cbs, p, 4);
483 if (!CBS_get_u8(&cbs, &u8) ||
484 !CBS_get_u24(&cbs, &l)) {
485 SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB);
486 goto err;
487 }
488 s->s3->tmp.message_type = u8;
489
490 if (l > (unsigned long)max) {
491 al = SSL_AD_ILLEGAL_PARAMETER;
492 SSLerr(SSL_F_SSL3_GET_MESSAGE,
493 SSL_R_EXCESSIVE_MESSAGE_SIZE);
494 goto f_err;
495 }
496 if (l && !BUF_MEM_grow_clean(s->init_buf, l + 4)) {
497 SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB);
498 goto err;
499 }
500 s->s3->tmp.message_size = l;
501 s->state = stn;
502
503 s->init_msg = s->init_buf->data + 4;
504 s->init_num = 0;
505 }
506
507 /* next state (stn) */
508 p = s->init_msg;
509 n = s->s3->tmp.message_size - s->init_num;
510 while (n > 0) {
511 i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
512 &p[s->init_num], n, 0);
513 if (i <= 0) {
514 s->rwstate = SSL_READING;
515 *ok = 0;
516 return i;
517 }
518 s->init_num += i;
519 n -= i;
520 }
521
522 /* If receiving Finished, record MAC of prior handshake messages for
523 * Finished verification. */
524 if (*s->init_buf->data == SSL3_MT_FINISHED)
525 ssl3_take_mac(s);
526
527 /* Feed this message into MAC computation. */
528 tls1_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4);
529 if (s->msg_callback)
530 s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
531 s->init_buf->data, (size_t)s->init_num + 4, s,
532 s->msg_callback_arg);
533
534 *ok = 1;
535 return (s->init_num);
536
537f_err:
538 ssl3_send_alert(s, SSL3_AL_FATAL, al);
539err:
540 *ok = 0;
541 return (-1);
542}
543
544int
545ssl_cert_type(X509 *x, EVP_PKEY *pkey)
546{
547 EVP_PKEY *pk;
548 int ret = -1, i;
549
550 if (pkey == NULL)
551 pk = X509_get_pubkey(x);
552 else
553 pk = pkey;
554 if (pk == NULL)
555 goto err;
556
557 i = pk->type;
558 if (i == EVP_PKEY_RSA) {
559 ret = SSL_PKEY_RSA_ENC;
560 } else if (i == EVP_PKEY_DSA) {
561 ret = SSL_PKEY_DSA_SIGN;
562 } else if (i == EVP_PKEY_EC) {
563 ret = SSL_PKEY_ECC;
564 } else if (i == NID_id_GostR3410_2001 ||
565 i == NID_id_GostR3410_2001_cc) {
566 ret = SSL_PKEY_GOST01;
567 }
568
569err:
570 if (!pkey)
571 EVP_PKEY_free(pk);
572 return (ret);
573}
574
575int
576ssl_verify_alarm_type(long type)
577{
578 int al;
579
580 switch (type) {
581 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
582 case X509_V_ERR_UNABLE_TO_GET_CRL:
583 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
584 al = SSL_AD_UNKNOWN_CA;
585 break;
586 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
587 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
588 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
589 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
590 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
591 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
592 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
593 case X509_V_ERR_CERT_NOT_YET_VALID:
594 case X509_V_ERR_CRL_NOT_YET_VALID:
595 case X509_V_ERR_CERT_UNTRUSTED:
596 case X509_V_ERR_CERT_REJECTED:
597 al = SSL_AD_BAD_CERTIFICATE;
598 break;
599 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
600 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
601 al = SSL_AD_DECRYPT_ERROR;
602 break;
603 case X509_V_ERR_CERT_HAS_EXPIRED:
604 case X509_V_ERR_CRL_HAS_EXPIRED:
605 al = SSL_AD_CERTIFICATE_EXPIRED;
606 break;
607 case X509_V_ERR_CERT_REVOKED:
608 al = SSL_AD_CERTIFICATE_REVOKED;
609 break;
610 case X509_V_ERR_OUT_OF_MEM:
611 al = SSL_AD_INTERNAL_ERROR;
612 break;
613 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
614 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
615 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
616 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
617 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
618 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
619 case X509_V_ERR_INVALID_CA:
620 al = SSL_AD_UNKNOWN_CA;
621 break;
622 case X509_V_ERR_APPLICATION_VERIFICATION:
623 al = SSL_AD_HANDSHAKE_FAILURE;
624 break;
625 case X509_V_ERR_INVALID_PURPOSE:
626 al = SSL_AD_UNSUPPORTED_CERTIFICATE;
627 break;
628 default:
629 al = SSL_AD_CERTIFICATE_UNKNOWN;
630 break;
631 }
632 return (al);
633}
634
635int
636ssl3_setup_init_buffer(SSL *s)
637{
638 BUF_MEM *buf = NULL;
639
640 if (s->init_buf != NULL)
641 return (1);
642
643 if ((buf = BUF_MEM_new()) == NULL)
644 goto err;
645 if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH))
646 goto err;
647
648 s->init_buf = buf;
649 return (1);
650
651err:
652 BUF_MEM_free(buf);
653 return (0);
654}
655
656int
657ssl3_setup_read_buffer(SSL *s)
658{
659 unsigned char *p;
660 size_t len, align, headerlen;
661
662 if (SSL_IS_DTLS(s))
663 headerlen = DTLS1_RT_HEADER_LENGTH;
664 else
665 headerlen = SSL3_RT_HEADER_LENGTH;
666
667 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
668
669 if (s->s3->rbuf.buf == NULL) {
670 len = SSL3_RT_MAX_PLAIN_LENGTH +
671 SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
672 if ((p = malloc(len)) == NULL)
673 goto err;
674 s->s3->rbuf.buf = p;
675 s->s3->rbuf.len = len;
676 }
677
678 s->packet = &(s->s3->rbuf.buf[0]);
679 return 1;
680
681err:
682 SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER, ERR_R_MALLOC_FAILURE);
683 return 0;
684}
685
686int
687ssl3_setup_write_buffer(SSL *s)
688{
689 unsigned char *p;
690 size_t len, align, headerlen;
691
692 if (SSL_IS_DTLS(s))
693 headerlen = DTLS1_RT_HEADER_LENGTH + 1;
694 else
695 headerlen = SSL3_RT_HEADER_LENGTH;
696
697 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
698
699 if (s->s3->wbuf.buf == NULL) {
700 len = s->max_send_fragment +
701 SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
702 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
703 len += headerlen + align +
704 SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
705
706 if ((p = malloc(len)) == NULL)
707 goto err;
708 s->s3->wbuf.buf = p;
709 s->s3->wbuf.len = len;
710 }
711
712 return 1;
713
714err:
715 SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE);
716 return 0;
717}
718
719int
720ssl3_setup_buffers(SSL *s)
721{
722 if (!ssl3_setup_read_buffer(s))
723 return 0;
724 if (!ssl3_setup_write_buffer(s))
725 return 0;
726 return 1;
727}
728
729int
730ssl3_release_write_buffer(SSL *s)
731{
732 free(s->s3->wbuf.buf);
733 s->s3->wbuf.buf = NULL;
734 return 1;
735}
736
737int
738ssl3_release_read_buffer(SSL *s)
739{
740 free(s->s3->rbuf.buf);
741 s->s3->rbuf.buf = NULL;
742 return 1;
743}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-09 03:45:14 +0000