Line data Source code
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 : * 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 <string.h>
119 : #include <stdio.h>
120 : #include "ssl_locl.h"
121 : #include <openssl/buffer.h>
122 : #include <openssl/rand.h>
123 : #include <openssl/objects.h>
124 : #include <openssl/evp.h>
125 : #include <openssl/x509.h>
126 :
127 : /*
128 : * send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or
129 : * SSL3_RT_CHANGE_CIPHER_SPEC)
130 : */
131 4076 : int ssl3_do_write(SSL *s, int type)
132 : {
133 : int ret;
134 :
135 4076 : ret = ssl3_write_bytes(s, type, &s->init_buf->data[s->init_off],
136 : s->init_num);
137 4076 : if (ret < 0)
138 : return (-1);
139 4076 : if (type == SSL3_RT_HANDSHAKE)
140 : /*
141 : * should not be done for 'Hello Request's, but in that case we'll
142 : * ignore the result anyway
143 : */
144 3339 : ssl3_finish_mac(s, (unsigned char *)&s->init_buf->data[s->init_off],
145 : ret);
146 :
147 4076 : if (ret == s->init_num) {
148 4076 : if (s->msg_callback)
149 0 : s->msg_callback(1, s->version, type, s->init_buf->data,
150 0 : (size_t)(s->init_off + s->init_num), s,
151 : s->msg_callback_arg);
152 : return (1);
153 : }
154 0 : s->init_off += ret;
155 0 : s->init_num -= ret;
156 0 : return (0);
157 : }
158 :
159 737 : int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
160 : {
161 : unsigned char *p;
162 : int i;
163 : unsigned long l;
164 :
165 737 : if (s->state == a) {
166 737 : p = ssl_handshake_start(s);
167 :
168 1474 : i = s->method->ssl3_enc->final_finish_mac(s,
169 : sender, slen,
170 737 : s->s3->tmp.finish_md);
171 737 : if (i <= 0)
172 : return 0;
173 737 : s->s3->tmp.finish_md_len = i;
174 737 : memcpy(p, s->s3->tmp.finish_md, i);
175 : l = i;
176 :
177 : /*
178 : * Copy the finished so we can use it for renegotiation checks
179 : */
180 737 : if (s->type == SSL_ST_CONNECT) {
181 370 : OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
182 370 : memcpy(s->s3->previous_client_finished, s->s3->tmp.finish_md, i);
183 370 : s->s3->previous_client_finished_len = i;
184 : } else {
185 367 : OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
186 367 : memcpy(s->s3->previous_server_finished, s->s3->tmp.finish_md, i);
187 367 : s->s3->previous_server_finished_len = i;
188 : }
189 :
190 : #ifdef OPENSSL_SYS_WIN16
191 : /*
192 : * MSVC 1.5 does not clear the top bytes of the word unless I do
193 : * this.
194 : */
195 : l &= 0xffff;
196 : #endif
197 737 : ssl_set_handshake_header(s, SSL3_MT_FINISHED, l);
198 737 : s->state = b;
199 : }
200 :
201 : /* SSL3_ST_SEND_xxxxxx_HELLO_B */
202 737 : return ssl_do_write(s);
203 : }
204 :
205 : #ifndef OPENSSL_NO_NEXTPROTONEG
206 : /*
207 : * ssl3_take_mac calculates the Finished MAC for the handshakes messages seen
208 : * to far.
209 : */
210 732 : static void ssl3_take_mac(SSL *s)
211 : {
212 : const char *sender;
213 : int slen;
214 : /*
215 : * If no new cipher setup return immediately: other functions will set
216 : * the appropriate error.
217 : */
218 732 : if (s->s3->tmp.new_cipher == NULL)
219 732 : return;
220 732 : if (s->state & SSL_ST_CONNECT) {
221 365 : sender = s->method->ssl3_enc->server_finished_label;
222 365 : slen = s->method->ssl3_enc->server_finished_label_len;
223 : } else {
224 367 : sender = s->method->ssl3_enc->client_finished_label;
225 367 : slen = s->method->ssl3_enc->client_finished_label_len;
226 : }
227 :
228 1464 : s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s,
229 : sender,
230 : slen,
231 732 : s->s3->tmp.peer_finish_md);
232 : }
233 : #endif
234 :
235 732 : int ssl3_get_finished(SSL *s, int a, int b)
236 : {
237 : int al, i, ok;
238 : long n;
239 : unsigned char *p;
240 :
241 : #ifdef OPENSSL_NO_NEXTPROTONEG
242 : /*
243 : * the mac has already been generated when we received the change cipher
244 : * spec message and is in s->s3->tmp.peer_finish_md
245 : */
246 : #endif
247 :
248 : /* 64 argument should actually be 36+4 :-) */
249 732 : n = s->method->ssl_get_message(s, a, b, SSL3_MT_FINISHED, 64, &ok);
250 :
251 732 : if (!ok)
252 0 : return ((int)n);
253 :
254 : /* If this occurs, we have missed a message */
255 732 : if (!s->s3->change_cipher_spec) {
256 : al = SSL_AD_UNEXPECTED_MESSAGE;
257 0 : SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
258 0 : goto f_err;
259 : }
260 732 : s->s3->change_cipher_spec = 0;
261 :
262 732 : p = (unsigned char *)s->init_msg;
263 732 : i = s->s3->tmp.peer_finish_md_len;
264 :
265 732 : if (i != n) {
266 : al = SSL_AD_DECODE_ERROR;
267 0 : SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_BAD_DIGEST_LENGTH);
268 0 : goto f_err;
269 : }
270 :
271 732 : if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) {
272 : al = SSL_AD_DECRYPT_ERROR;
273 0 : SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_DIGEST_CHECK_FAILED);
274 0 : goto f_err;
275 : }
276 :
277 : /*
278 : * Copy the finished so we can use it for renegotiation checks
279 : */
280 732 : if (s->type == SSL_ST_ACCEPT) {
281 367 : OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
282 367 : memcpy(s->s3->previous_client_finished, s->s3->tmp.peer_finish_md, i);
283 367 : s->s3->previous_client_finished_len = i;
284 : } else {
285 365 : OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
286 365 : memcpy(s->s3->previous_server_finished, s->s3->tmp.peer_finish_md, i);
287 365 : s->s3->previous_server_finished_len = i;
288 : }
289 :
290 : return (1);
291 : f_err:
292 0 : ssl3_send_alert(s, SSL3_AL_FATAL, al);
293 0 : return (0);
294 : }
295 :
296 : /*-
297 : * for these 2 messages, we need to
298 : * ssl->enc_read_ctx re-init
299 : * ssl->s3->read_sequence zero
300 : * ssl->s3->read_mac_secret re-init
301 : * ssl->session->read_sym_enc assign
302 : * ssl->session->read_compression assign
303 : * ssl->session->read_hash assign
304 : */
305 737 : int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
306 : {
307 : unsigned char *p;
308 :
309 737 : if (s->state == a) {
310 737 : p = (unsigned char *)s->init_buf->data;
311 737 : *p = SSL3_MT_CCS;
312 737 : s->init_num = 1;
313 737 : s->init_off = 0;
314 :
315 737 : s->state = b;
316 : }
317 :
318 : /* SSL3_ST_CW_CHANGE_B */
319 737 : return (ssl3_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC));
320 : }
321 :
322 373 : unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk)
323 : {
324 : unsigned char *p;
325 373 : unsigned long l = 3 + SSL_HM_HEADER_LENGTH(s);
326 :
327 373 : if (!ssl_add_cert_chain(s, cpk, &l))
328 : return 0;
329 :
330 373 : l -= 3 + SSL_HM_HEADER_LENGTH(s);
331 373 : p = ssl_handshake_start(s);
332 373 : l2n3(l, p);
333 373 : l += 3;
334 373 : ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l);
335 373 : return l + SSL_HM_HEADER_LENGTH(s);
336 : }
337 :
338 : /*
339 : * Obtain handshake message of message type 'mt' (any if mt == -1), maximum
340 : * acceptable body length 'max'. The first four bytes (msg_type and length)
341 : * are read in state 'st1', the body is read in state 'stn'.
342 : */
343 4803 : long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
344 : {
345 : unsigned char *p;
346 : unsigned long l;
347 : long n;
348 : int i, al;
349 :
350 4803 : if (s->s3->tmp.reuse_message) {
351 370 : s->s3->tmp.reuse_message = 0;
352 370 : if ((mt >= 0) && (s->s3->tmp.message_type != mt)) {
353 : al = SSL_AD_UNEXPECTED_MESSAGE;
354 0 : SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
355 0 : goto f_err;
356 : }
357 370 : *ok = 1;
358 370 : s->state = stn;
359 370 : s->init_msg = s->init_buf->data + 4;
360 370 : s->init_num = (int)s->s3->tmp.message_size;
361 370 : return s->init_num;
362 : }
363 :
364 4433 : p = (unsigned char *)s->init_buf->data;
365 :
366 4433 : if (s->state == st1) { /* s->init_num < 4 */
367 : int skip_message;
368 :
369 : do {
370 7750 : while (s->init_num < 4) {
371 4433 : i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
372 : &p[s->init_num],
373 : 4 - s->init_num, 0);
374 4433 : if (i <= 0) {
375 1116 : s->rwstate = SSL_READING;
376 1116 : *ok = 0;
377 1116 : return i;
378 : }
379 3317 : s->init_num += i;
380 : }
381 :
382 : skip_message = 0;
383 3317 : if (!s->server)
384 2210 : if (p[0] == SSL3_MT_HELLO_REQUEST)
385 : /*
386 : * The server may always send 'Hello Request' messages --
387 : * we are doing a handshake anyway now, so ignore them if
388 : * their format is correct. Does not count for 'Finished'
389 : * MAC.
390 : */
391 0 : if (p[1] == 0 && p[2] == 0 && p[3] == 0) {
392 0 : s->init_num = 0;
393 : skip_message = 1;
394 :
395 0 : if (s->msg_callback)
396 0 : s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
397 : p, 4, s, s->msg_callback_arg);
398 : }
399 : }
400 3317 : while (skip_message);
401 :
402 : /* s->init_num == 4 */
403 :
404 3317 : if ((mt >= 0) && (*p != mt)) {
405 : al = SSL_AD_UNEXPECTED_MESSAGE;
406 0 : SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE);
407 0 : goto f_err;
408 : }
409 :
410 3317 : s->s3->tmp.message_type = *(p++);
411 :
412 3317 : n2l3(p, l);
413 3317 : if (l > (unsigned long)max) {
414 : al = SSL_AD_ILLEGAL_PARAMETER;
415 0 : SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE);
416 0 : goto f_err;
417 : }
418 3317 : if (l > (INT_MAX - 4)) { /* BUF_MEM_grow takes an 'int' parameter */
419 : al = SSL_AD_ILLEGAL_PARAMETER;
420 0 : SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE);
421 0 : goto f_err;
422 : }
423 3317 : if (l && !BUF_MEM_grow_clean(s->init_buf, (int)l + 4)) {
424 0 : SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB);
425 0 : goto err;
426 : }
427 3317 : s->s3->tmp.message_size = l;
428 3317 : s->state = stn;
429 :
430 3317 : s->init_msg = s->init_buf->data + 4;
431 3317 : s->init_num = 0;
432 : }
433 :
434 : /* next state (stn) */
435 3317 : p = s->init_msg;
436 3317 : n = s->s3->tmp.message_size - s->init_num;
437 9581 : while (n > 0) {
438 2947 : i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &p[s->init_num],
439 : n, 0);
440 2947 : if (i <= 0) {
441 0 : s->rwstate = SSL_READING;
442 0 : *ok = 0;
443 0 : return i;
444 : }
445 2947 : s->init_num += i;
446 2947 : n -= i;
447 : }
448 :
449 : #ifndef OPENSSL_NO_NEXTPROTONEG
450 : /*
451 : * If receiving Finished, record MAC of prior handshake messages for
452 : * Finished verification.
453 : */
454 3317 : if (*s->init_buf->data == SSL3_MT_FINISHED)
455 732 : ssl3_take_mac(s);
456 : #endif
457 :
458 : /* Feed this message into MAC computation. */
459 3317 : ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4);
460 3317 : if (s->msg_callback)
461 0 : s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data,
462 0 : (size_t)s->init_num + 4, s, s->msg_callback_arg);
463 3317 : *ok = 1;
464 3317 : return s->init_num;
465 : f_err:
466 0 : ssl3_send_alert(s, SSL3_AL_FATAL, al);
467 : err:
468 0 : *ok = 0;
469 0 : return (-1);
470 : }
471 :
472 1246 : int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
473 : {
474 : EVP_PKEY *pk;
475 : int ret = -1, i;
476 :
477 1246 : if (pkey == NULL)
478 0 : pk = X509_get_pubkey(x);
479 : else
480 : pk = pkey;
481 1246 : if (pk == NULL)
482 : goto err;
483 :
484 1246 : i = pk->type;
485 1246 : if (i == EVP_PKEY_RSA) {
486 : ret = SSL_PKEY_RSA_ENC;
487 0 : } else if (i == EVP_PKEY_DSA) {
488 : ret = SSL_PKEY_DSA_SIGN;
489 : }
490 : #ifndef OPENSSL_NO_EC
491 0 : else if (i == EVP_PKEY_EC) {
492 : ret = SSL_PKEY_ECC;
493 : }
494 : #endif
495 0 : else if (i == NID_id_GostR3410_94 || i == NID_id_GostR3410_94_cc) {
496 : ret = SSL_PKEY_GOST94;
497 0 : } else if (i == NID_id_GostR3410_2001 || i == NID_id_GostR3410_2001_cc) {
498 : ret = SSL_PKEY_GOST01;
499 0 : } else if (x && (i == EVP_PKEY_DH || i == EVP_PKEY_DHX)) {
500 : /*
501 : * For DH two cases: DH certificate signed with RSA and DH
502 : * certificate signed with DSA.
503 : */
504 0 : i = X509_certificate_type(x, pk);
505 0 : if (i & EVP_PKS_RSA)
506 : ret = SSL_PKEY_DH_RSA;
507 0 : else if (i & EVP_PKS_DSA)
508 : ret = SSL_PKEY_DH_DSA;
509 : }
510 :
511 : err:
512 1246 : if (!pkey)
513 0 : EVP_PKEY_free(pk);
514 1246 : return (ret);
515 : }
516 :
517 0 : int ssl_verify_alarm_type(long type)
518 : {
519 : int al;
520 :
521 0 : switch (type) {
522 : case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
523 : case X509_V_ERR_UNABLE_TO_GET_CRL:
524 : case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
525 : al = SSL_AD_UNKNOWN_CA;
526 : break;
527 : case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
528 : case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
529 : case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
530 : case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
531 : case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
532 : case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
533 : case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
534 : case X509_V_ERR_CERT_NOT_YET_VALID:
535 : case X509_V_ERR_CRL_NOT_YET_VALID:
536 : case X509_V_ERR_CERT_UNTRUSTED:
537 : case X509_V_ERR_CERT_REJECTED:
538 : al = SSL_AD_BAD_CERTIFICATE;
539 : break;
540 : case X509_V_ERR_CERT_SIGNATURE_FAILURE:
541 : case X509_V_ERR_CRL_SIGNATURE_FAILURE:
542 : al = SSL_AD_DECRYPT_ERROR;
543 : break;
544 : case X509_V_ERR_CERT_HAS_EXPIRED:
545 : case X509_V_ERR_CRL_HAS_EXPIRED:
546 : al = SSL_AD_CERTIFICATE_EXPIRED;
547 : break;
548 : case X509_V_ERR_CERT_REVOKED:
549 : al = SSL_AD_CERTIFICATE_REVOKED;
550 : break;
551 : case X509_V_ERR_OUT_OF_MEM:
552 : al = SSL_AD_INTERNAL_ERROR;
553 : break;
554 : case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
555 : case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
556 : case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
557 : case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
558 : case X509_V_ERR_CERT_CHAIN_TOO_LONG:
559 : case X509_V_ERR_PATH_LENGTH_EXCEEDED:
560 : case X509_V_ERR_INVALID_CA:
561 : al = SSL_AD_UNKNOWN_CA;
562 : break;
563 : case X509_V_ERR_APPLICATION_VERIFICATION:
564 : al = SSL_AD_HANDSHAKE_FAILURE;
565 : break;
566 : case X509_V_ERR_INVALID_PURPOSE:
567 : al = SSL_AD_UNSUPPORTED_CERTIFICATE;
568 : break;
569 : default:
570 : al = SSL_AD_CERTIFICATE_UNKNOWN;
571 : break;
572 : }
573 0 : return (al);
574 : }
575 :
576 : #ifndef OPENSSL_NO_BUF_FREELISTS
577 : /*-
578 : * On some platforms, malloc() performance is bad enough that you can't just
579 : * free() and malloc() buffers all the time, so we need to use freelists from
580 : * unused buffers. Currently, each freelist holds memory chunks of only a
581 : * given size (list->chunklen); other sized chunks are freed and malloced.
582 : * This doesn't help much if you're using many different SSL option settings
583 : * with a given context. (The options affecting buffer size are
584 : * max_send_fragment, read buffer vs write buffer,
585 : * SSL_OP_MICROSOFT_BIG_WRITE_BUFFER, SSL_OP_NO_COMPRESSION, and
586 : * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS.) Using a separate freelist for every
587 : * possible size is not an option, since max_send_fragment can take on many
588 : * different values.
589 : *
590 : * If you are on a platform with a slow malloc(), and you're using SSL
591 : * connections with many different settings for these options, and you need to
592 : * use the SSL_MOD_RELEASE_BUFFERS feature, you have a few options:
593 : * - Link against a faster malloc implementation.
594 : * - Use a separate SSL_CTX for each option set.
595 : * - Improve this code.
596 : */
597 1492 : static void *freelist_extract(SSL_CTX *ctx, int for_read, int sz)
598 : {
599 : SSL3_BUF_FREELIST *list;
600 : SSL3_BUF_FREELIST_ENTRY *ent = NULL;
601 : void *result = NULL;
602 :
603 1492 : CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
604 1492 : list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist;
605 1492 : if (list != NULL && sz == (int)list->chunklen)
606 152 : ent = list->head;
607 1492 : if (ent != NULL) {
608 152 : list->head = ent->next;
609 : result = ent;
610 152 : if (--list->len == 0)
611 152 : list->chunklen = 0;
612 : }
613 1492 : CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
614 1492 : if (!result)
615 1340 : result = OPENSSL_malloc(sz);
616 1492 : return result;
617 : }
618 :
619 1492 : static void freelist_insert(SSL_CTX *ctx, int for_read, size_t sz, void *mem)
620 : {
621 : SSL3_BUF_FREELIST *list;
622 : SSL3_BUF_FREELIST_ENTRY *ent;
623 :
624 1492 : CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
625 1492 : list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist;
626 2984 : if (list != NULL &&
627 4476 : (sz == list->chunklen || list->chunklen == 0) &&
628 2984 : list->len < ctx->freelist_max_len && sz >= sizeof(*ent)) {
629 1492 : list->chunklen = sz;
630 : ent = mem;
631 1492 : ent->next = list->head;
632 1492 : list->head = ent;
633 1492 : ++list->len;
634 : mem = NULL;
635 : }
636 :
637 1492 : CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
638 1492 : if (mem)
639 0 : OPENSSL_free(mem);
640 1492 : }
641 : #else
642 : # define freelist_extract(c,fr,sz) OPENSSL_malloc(sz)
643 : # define freelist_insert(c,fr,sz,m) OPENSSL_free(m)
644 : #endif
645 :
646 746 : int ssl3_setup_read_buffer(SSL *s)
647 : {
648 : unsigned char *p;
649 : size_t len, align = 0, headerlen;
650 :
651 746 : if (SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
652 : headerlen = DTLS1_RT_HEADER_LENGTH;
653 : else
654 : headerlen = SSL3_RT_HEADER_LENGTH;
655 :
656 : #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
657 : align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
658 : #endif
659 :
660 746 : if (s->s3->rbuf.buf == NULL) {
661 746 : len = SSL3_RT_MAX_PLAIN_LENGTH
662 : + SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
663 746 : if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER) {
664 0 : s->s3->init_extra = 1;
665 0 : len += SSL3_RT_MAX_EXTRA;
666 : }
667 : #ifndef OPENSSL_NO_COMP
668 746 : if (!(s->options & SSL_OP_NO_COMPRESSION))
669 746 : len += SSL3_RT_MAX_COMPRESSED_OVERHEAD;
670 : #endif
671 746 : if ((p = freelist_extract(s->ctx, 1, len)) == NULL)
672 : goto err;
673 746 : s->s3->rbuf.buf = p;
674 746 : s->s3->rbuf.len = len;
675 : }
676 :
677 746 : s->packet = &(s->s3->rbuf.buf[0]);
678 746 : return 1;
679 :
680 : err:
681 0 : SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER, ERR_R_MALLOC_FAILURE);
682 0 : return 0;
683 : }
684 :
685 746 : int ssl3_setup_write_buffer(SSL *s)
686 : {
687 : unsigned char *p;
688 : size_t len, align = 0, headerlen;
689 :
690 746 : if (SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
691 : headerlen = DTLS1_RT_HEADER_LENGTH + 1;
692 : else
693 : headerlen = SSL3_RT_HEADER_LENGTH;
694 :
695 : #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
696 : align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
697 : #endif
698 :
699 746 : if (s->s3->wbuf.buf == NULL) {
700 1492 : len = s->max_send_fragment
701 746 : + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
702 : #ifndef OPENSSL_NO_COMP
703 746 : if (!(s->options & SSL_OP_NO_COMPRESSION))
704 746 : len += SSL3_RT_MAX_COMPRESSED_OVERHEAD;
705 : #endif
706 746 : if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
707 746 : len += headerlen + align + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
708 :
709 746 : if ((p = freelist_extract(s->ctx, 0, len)) == NULL)
710 : goto err;
711 746 : s->s3->wbuf.buf = p;
712 746 : s->s3->wbuf.len = len;
713 : }
714 :
715 : return 1;
716 :
717 : err:
718 0 : SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE);
719 0 : return 0;
720 : }
721 :
722 746 : int ssl3_setup_buffers(SSL *s)
723 : {
724 746 : if (!ssl3_setup_read_buffer(s))
725 : return 0;
726 746 : if (!ssl3_setup_write_buffer(s))
727 : return 0;
728 746 : return 1;
729 : }
730 :
731 746 : int ssl3_release_write_buffer(SSL *s)
732 : {
733 746 : if (s->s3->wbuf.buf != NULL) {
734 746 : freelist_insert(s->ctx, 0, s->s3->wbuf.len, s->s3->wbuf.buf);
735 746 : s->s3->wbuf.buf = NULL;
736 : }
737 746 : return 1;
738 : }
739 :
740 746 : int ssl3_release_read_buffer(SSL *s)
741 : {
742 746 : if (s->s3->rbuf.buf != NULL) {
743 746 : freelist_insert(s->ctx, 1, s->s3->rbuf.len, s->s3->rbuf.buf);
744 746 : s->s3->rbuf.buf = NULL;
745 : }
746 746 : return 1;
747 : }
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