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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 1.45 2022/11/26 16:08:55 tb 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 <openssl/buffer.h>
122#include <openssl/evp.h>
123#include <openssl/objects.h>
124#include <openssl/x509.h>
125
126#include "bytestring.h"
127#include "dtls_local.h"
128#include "ssl_local.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_transcript_record(s,
150 (unsigned char *)&s->init_buf->data[s->init_off], ret);
151
152 if (ret == s->init_num) {
153 ssl_msg_callback(s, 1, type, s->init_buf->data,
154 (size_t)(s->init_off + s->init_num));
155 return (1);
156 }
157
158 s->init_off += ret;
159 s->init_num -= ret;
160
161 return (0);
162}
163
164static int
165ssl3_add_cert(CBB *cbb, X509 *x)
166{
167 unsigned char *data;
168 int cert_len;
169 int ret = 0;
170 CBB cert;
171
172 if ((cert_len = i2d_X509(x, NULL)) < 0)
173 goto err;
174
175 if (!CBB_add_u24_length_prefixed(cbb, &cert))
176 goto err;
177 if (!CBB_add_space(&cert, &data, cert_len))
178 goto err;
179 if (i2d_X509(x, &data) < 0)
180 goto err;
181 if (!CBB_flush(cbb))
182 goto err;
183
184 ret = 1;
185
186 err:
187 return (ret);
188}
189
190int
191ssl3_output_cert_chain(SSL *s, CBB *cbb, SSL_CERT_PKEY *cpk)
192{
193 X509_STORE_CTX *xs_ctx = NULL;
194 STACK_OF(X509) *chain;
195 CBB cert_list;
196 X509 *x;
197 int ret = 0;
198 int i;
199
200 if (!CBB_add_u24_length_prefixed(cbb, &cert_list))
201 goto err;
202
203 /* Send an empty certificate list when no certificate is available. */
204 if (cpk == NULL)
205 goto done;
206
207 if ((chain = cpk->chain) == NULL)
208 chain = s->ctx->extra_certs;
209
210 if (chain != NULL || (s->mode & SSL_MODE_NO_AUTO_CHAIN)) {
211 if (!ssl3_add_cert(&cert_list, cpk->x509))
212 goto err;
213 } else {
214 if ((xs_ctx = X509_STORE_CTX_new()) == NULL)
215 goto err;
216 if (!X509_STORE_CTX_init(xs_ctx, s->ctx->cert_store,
217 cpk->x509, NULL)) {
218 SSLerror(s, ERR_R_X509_LIB);
219 goto err;
220 }
221 X509_VERIFY_PARAM_set_flags(X509_STORE_CTX_get0_param(xs_ctx),
222 X509_V_FLAG_LEGACY_VERIFY);
223 X509_verify_cert(xs_ctx);
224 ERR_clear_error();
225 chain = X509_STORE_CTX_get0_chain(xs_ctx);
226 }
227
228 for (i = 0; i < sk_X509_num(chain); i++) {
229 x = sk_X509_value(chain, i);
230 if (!ssl3_add_cert(&cert_list, x))
231 goto err;
232 }
233
234 done:
235 if (!CBB_flush(cbb))
236 goto err;
237
238 ret = 1;
239
240 err:
241 X509_STORE_CTX_free(xs_ctx);
242
243 return (ret);
244}
245
246/*
247 * Obtain handshake message of message type 'mt' (any if mt == -1),
248 * maximum acceptable body length 'max'.
249 * The first four bytes (msg_type and length) are read in state 'st1',
250 * the body is read in state 'stn'.
251 */
252int
253ssl3_get_message(SSL *s, int st1, int stn, int mt, long max)
254{
255 unsigned char *p;
256 uint32_t l;
257 long n;
258 int i, al;
259 CBS cbs;
260 uint8_t u8;
261
262 if (SSL_is_dtls(s))
263 return dtls1_get_message(s, st1, stn, mt, max);
264
265 if (s->s3->hs.tls12.reuse_message) {
266 s->s3->hs.tls12.reuse_message = 0;
267 if ((mt >= 0) && (s->s3->hs.tls12.message_type != mt)) {
268 al = SSL_AD_UNEXPECTED_MESSAGE;
269 SSLerror(s, SSL_R_UNEXPECTED_MESSAGE);
270 goto fatal_err;
271 }
272 s->init_msg = s->init_buf->data +
273 SSL3_HM_HEADER_LENGTH;
274 s->init_num = (int)s->s3->hs.tls12.message_size;
275 return 1;
276 }
277
278 p = (unsigned char *)s->init_buf->data;
279
280 if (s->s3->hs.state == st1) {
281 int skip_message;
282
283 do {
284 while (s->init_num < SSL3_HM_HEADER_LENGTH) {
285 i = s->method->ssl_read_bytes(s,
286 SSL3_RT_HANDSHAKE, &p[s->init_num],
287 SSL3_HM_HEADER_LENGTH - s->init_num, 0);
288 if (i <= 0) {
289 s->rwstate = SSL_READING;
290 return i;
291 }
292 s->init_num += i;
293 }
294
295 skip_message = 0;
296 if (!s->server && p[0] == SSL3_MT_HELLO_REQUEST) {
297 /*
298 * The server may always send 'Hello Request'
299 * messages -- we are doing a handshake anyway
300 * now, so ignore them if their format is
301 * correct. Does not count for 'Finished' MAC.
302 */
303 if (p[1] == 0 && p[2] == 0 &&p[3] == 0) {
304 s->init_num = 0;
305 skip_message = 1;
306
307 ssl_msg_callback(s, 0,
308 SSL3_RT_HANDSHAKE, p,
309 SSL3_HM_HEADER_LENGTH);
310 }
311 }
312 } while (skip_message);
313
314 if ((mt >= 0) && (*p != mt)) {
315 al = SSL_AD_UNEXPECTED_MESSAGE;
316 SSLerror(s, SSL_R_UNEXPECTED_MESSAGE);
317 goto fatal_err;
318 }
319
320 CBS_init(&cbs, p, SSL3_HM_HEADER_LENGTH);
321 if (!CBS_get_u8(&cbs, &u8) ||
322 !CBS_get_u24(&cbs, &l)) {
323 SSLerror(s, ERR_R_BUF_LIB);
324 goto err;
325 }
326 s->s3->hs.tls12.message_type = u8;
327
328 if (l > (unsigned long)max) {
329 al = SSL_AD_ILLEGAL_PARAMETER;
330 SSLerror(s, SSL_R_EXCESSIVE_MESSAGE_SIZE);
331 goto fatal_err;
332 }
333 if (l && !BUF_MEM_grow_clean(s->init_buf,
334 l + SSL3_HM_HEADER_LENGTH)) {
335 SSLerror(s, ERR_R_BUF_LIB);
336 goto err;
337 }
338 s->s3->hs.tls12.message_size = l;
339 s->s3->hs.state = stn;
340
341 s->init_msg = s->init_buf->data +
342 SSL3_HM_HEADER_LENGTH;
343 s->init_num = 0;
344 }
345
346 /* next state (stn) */
347 p = s->init_msg;
348 n = s->s3->hs.tls12.message_size - s->init_num;
349 while (n > 0) {
350 i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
351 &p[s->init_num], n, 0);
352 if (i <= 0) {
353 s->rwstate = SSL_READING;
354 return i;
355 }
356 s->init_num += i;
357 n -= i;
358 }
359
360 /* Feed this message into MAC computation. */
361 if (s->mac_packet) {
362 tls1_transcript_record(s, (unsigned char *)s->init_buf->data,
363 s->init_num + SSL3_HM_HEADER_LENGTH);
364
365 ssl_msg_callback(s, 0, SSL3_RT_HANDSHAKE,
366 s->init_buf->data,
367 (size_t)s->init_num + SSL3_HM_HEADER_LENGTH);
368 }
369
370 return 1;
371
372 fatal_err:
373 ssl3_send_alert(s, SSL3_AL_FATAL, al);
374 err:
375 return -1;
376}
377
378int
379ssl_cert_type(EVP_PKEY *pkey)
380{
381 if (pkey == NULL)
382 return -1;
383
384 switch (EVP_PKEY_id(pkey)) {
385 case EVP_PKEY_EC:
386 return SSL_PKEY_ECC;
387 case NID_id_GostR3410_2001:
388 case NID_id_GostR3410_2001_cc:
389 return SSL_PKEY_GOST01;
390 case EVP_PKEY_RSA:
391 return SSL_PKEY_RSA;
392 }
393
394 return -1;
395}
396
397int
398ssl_verify_alarm_type(long type)
399{
400 int al;
401
402 switch (type) {
403 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
404 case X509_V_ERR_UNABLE_TO_GET_CRL:
405 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
406 al = SSL_AD_UNKNOWN_CA;
407 break;
408 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
409 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
410 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
411 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
412 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
413 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
414 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
415 case X509_V_ERR_CERT_NOT_YET_VALID:
416 case X509_V_ERR_CRL_NOT_YET_VALID:
417 case X509_V_ERR_CERT_UNTRUSTED:
418 case X509_V_ERR_CERT_REJECTED:
419 al = SSL_AD_BAD_CERTIFICATE;
420 break;
421 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
422 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
423 al = SSL_AD_DECRYPT_ERROR;
424 break;
425 case X509_V_ERR_CERT_HAS_EXPIRED:
426 case X509_V_ERR_CRL_HAS_EXPIRED:
427 al = SSL_AD_CERTIFICATE_EXPIRED;
428 break;
429 case X509_V_ERR_CERT_REVOKED:
430 al = SSL_AD_CERTIFICATE_REVOKED;
431 break;
432 case X509_V_ERR_OUT_OF_MEM:
433 al = SSL_AD_INTERNAL_ERROR;
434 break;
435 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
436 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
437 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
438 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
439 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
440 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
441 case X509_V_ERR_INVALID_CA:
442 al = SSL_AD_UNKNOWN_CA;
443 break;
444 case X509_V_ERR_APPLICATION_VERIFICATION:
445 al = SSL_AD_HANDSHAKE_FAILURE;
446 break;
447 case X509_V_ERR_INVALID_PURPOSE:
448 al = SSL_AD_UNSUPPORTED_CERTIFICATE;
449 break;
450 default:
451 al = SSL_AD_CERTIFICATE_UNKNOWN;
452 break;
453 }
454 return (al);
455}
456
457int
458ssl3_setup_init_buffer(SSL *s)
459{
460 BUF_MEM *buf = NULL;
461
462 if (s->init_buf != NULL)
463 return (1);
464
465 if ((buf = BUF_MEM_new()) == NULL)
466 goto err;
467 if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH))
468 goto err;
469
470 s->init_buf = buf;
471 return (1);
472
473 err:
474 BUF_MEM_free(buf);
475 return (0);
476}
477
478void
479ssl3_release_init_buffer(SSL *s)
480{
481 BUF_MEM_free(s->init_buf);
482 s->init_buf = NULL;
483 s->init_msg = NULL;
484 s->init_num = 0;
485 s->init_off = 0;
486}
487
488int
489ssl3_setup_read_buffer(SSL *s)
490{
491 unsigned char *p;
492 size_t len, align, headerlen;
493
494 if (SSL_is_dtls(s))
495 headerlen = DTLS1_RT_HEADER_LENGTH;
496 else
497 headerlen = SSL3_RT_HEADER_LENGTH;
498
499 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
500
501 if (s->s3->rbuf.buf == NULL) {
502 len = SSL3_RT_MAX_PLAIN_LENGTH +
503 SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
504 if ((p = calloc(1, len)) == NULL)
505 goto err;
506 s->s3->rbuf.buf = p;
507 s->s3->rbuf.len = len;
508 }
509
510 s->packet = s->s3->rbuf.buf;
511 return 1;
512
513 err:
514 SSLerror(s, ERR_R_MALLOC_FAILURE);
515 return 0;
516}
517
518int
519ssl3_setup_write_buffer(SSL *s)
520{
521 unsigned char *p;
522 size_t len, align, headerlen;
523
524 if (SSL_is_dtls(s))
525 headerlen = DTLS1_RT_HEADER_LENGTH + 1;
526 else
527 headerlen = SSL3_RT_HEADER_LENGTH;
528
529 align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
530
531 if (s->s3->wbuf.buf == NULL) {
532 len = s->max_send_fragment +
533 SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
534 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
535 len += headerlen + align +
536 SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
537
538 if ((p = calloc(1, len)) == NULL)
539 goto err;
540 s->s3->wbuf.buf = p;
541 s->s3->wbuf.len = len;
542 }
543
544 return 1;
545
546 err:
547 SSLerror(s, ERR_R_MALLOC_FAILURE);
548 return 0;
549}
550
551int
552ssl3_setup_buffers(SSL *s)
553{
554 if (!ssl3_setup_read_buffer(s))
555 return 0;
556 if (!ssl3_setup_write_buffer(s))
557 return 0;
558 return 1;
559}
560
561void
562ssl3_release_buffer(SSL3_BUFFER_INTERNAL *b)
563{
564 freezero(b->buf, b->len);
565 b->buf = NULL;
566 b->len = 0;
567}
568
569void
570ssl3_release_read_buffer(SSL *s)
571{
572 ssl3_release_buffer(&s->s3->rbuf);
573}
574
575void
576ssl3_release_write_buffer(SSL *s)
577{
578 ssl3_release_buffer(&s->s3->wbuf);
579}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-11 16:57:50 +0000