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d02b48c6 | 1 | /* ssl/s3_both.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
ae5c8664 | 8 | * |
d02b48c6 RE |
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). | |
ae5c8664 | 15 | * |
d02b48c6 RE |
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. | |
ae5c8664 | 22 | * |
d02b48c6 RE |
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 :-). | |
ae5c8664 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
ae5c8664 | 40 | * |
d02b48c6 RE |
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. | |
ae5c8664 | 52 | * |
d02b48c6 RE |
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 | */ | |
3813046d | 58 | /* ==================================================================== |
82b0bf0b | 59 | * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. |
3813046d BM |
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 | |
ae5c8664 | 66 | * notice, this list of conditions and the following disclaimer. |
3813046d BM |
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 | */ | |
ea262260 BM |
111 | /* ==================================================================== |
112 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
ae5c8664 | 113 | * ECC cipher suite support in OpenSSL originally developed by |
ea262260 BM |
114 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. |
115 | */ | |
d02b48c6 | 116 | |
48948d53 | 117 | #include <limits.h> |
f2d9a32c | 118 | #include <string.h> |
d02b48c6 | 119 | #include <stdio.h> |
7b63c0fa | 120 | #include "ssl_locl.h" |
ec577822 BM |
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> | |
d02b48c6 | 126 | |
ae5c8664 MC |
127 | /* |
128 | * send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or | |
129 | * SSL3_RT_CHANGE_CIPHER_SPEC) | |
130 | */ | |
e7ecc7d4 | 131 | int ssl3_do_write(SSL *s, int type) |
ae5c8664 MC |
132 | { |
133 | int ret; | |
134 | ||
135 | ret = ssl3_write_bytes(s, type, &s->init_buf->data[s->init_off], | |
136 | s->init_num); | |
137 | if (ret < 0) | |
138 | return (-1); | |
139 | 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 | ssl3_finish_mac(s, (unsigned char *)&s->init_buf->data[s->init_off], | |
145 | ret); | |
146 | ||
147 | if (ret == s->init_num) { | |
148 | if (s->msg_callback) | |
149 | s->msg_callback(1, s->version, type, s->init_buf->data, | |
150 | (size_t)(s->init_off + s->init_num), s, | |
151 | s->msg_callback_arg); | |
152 | return (1); | |
153 | } | |
154 | s->init_off += ret; | |
155 | s->init_num -= ret; | |
156 | return (0); | |
157 | } | |
e7ecc7d4 | 158 | |
c44f7540 | 159 | int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen) |
ae5c8664 MC |
160 | { |
161 | unsigned char *p; | |
162 | int i; | |
163 | unsigned long l; | |
164 | ||
165 | if (s->state == a) { | |
166 | p = ssl_handshake_start(s); | |
167 | ||
168 | i = s->method->ssl3_enc->final_finish_mac(s, | |
169 | sender, slen, | |
170 | s->s3->tmp.finish_md); | |
75862f77 | 171 | if (i <= 0) |
ae5c8664 MC |
172 | return 0; |
173 | s->s3->tmp.finish_md_len = i; | |
174 | 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 | if (s->type == SSL_ST_CONNECT) { | |
181 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
182 | memcpy(s->s3->previous_client_finished, s->s3->tmp.finish_md, i); | |
183 | s->s3->previous_client_finished_len = i; | |
184 | } else { | |
185 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
186 | memcpy(s->s3->previous_server_finished, s->s3->tmp.finish_md, i); | |
187 | s->s3->previous_server_finished_len = i; | |
188 | } | |
bc9058d0 | 189 | |
bc36ee62 | 190 | #ifdef OPENSSL_SYS_WIN16 |
ae5c8664 MC |
191 | /* |
192 | * MSVC 1.5 does not clear the top bytes of the word unless I do | |
193 | * this. | |
194 | */ | |
195 | l &= 0xffff; | |
dfeab068 | 196 | #endif |
ae5c8664 MC |
197 | ssl_set_handshake_header(s, SSL3_MT_FINISHED, l); |
198 | s->state = b; | |
199 | } | |
d02b48c6 | 200 | |
ae5c8664 MC |
201 | /* SSL3_ST_SEND_xxxxxx_HELLO_B */ |
202 | return ssl_do_write(s); | |
203 | } | |
d02b48c6 | 204 | |
68b33cc5 | 205 | #ifndef OPENSSL_NO_NEXTPROTONEG |
ae5c8664 MC |
206 | /* |
207 | * ssl3_take_mac calculates the Finished MAC for the handshakes messages seen | |
208 | * to far. | |
209 | */ | |
68d2cf51 | 210 | static void ssl3_take_mac(SSL *s) |
ae5c8664 MC |
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 | if (s->s3->tmp.new_cipher == NULL) | |
219 | return; | |
220 | if (s->state & SSL_ST_CONNECT) { | |
221 | sender = s->method->ssl3_enc->server_finished_label; | |
222 | slen = s->method->ssl3_enc->server_finished_label_len; | |
223 | } else { | |
224 | sender = s->method->ssl3_enc->client_finished_label; | |
225 | slen = s->method->ssl3_enc->client_finished_label_len; | |
226 | } | |
227 | ||
228 | s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s, | |
229 | sender, | |
230 | slen, | |
231 | s->s3->tmp.peer_finish_md); | |
232 | } | |
68b33cc5 BL |
233 | #endif |
234 | ||
6b691a5c | 235 | int ssl3_get_finished(SSL *s, int a, int b) |
ae5c8664 MC |
236 | { |
237 | int al, i, ok; | |
238 | long n; | |
239 | unsigned char *p; | |
d02b48c6 | 240 | |
68b33cc5 | 241 | #ifdef OPENSSL_NO_NEXTPROTONEG |
ae5c8664 MC |
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 | */ | |
68b33cc5 | 246 | #endif |
d02b48c6 | 247 | |
ae5c8664 MC |
248 | /* 64 argument should actually be 36+4 :-) */ |
249 | n = s->method->ssl_get_message(s, a, b, SSL3_MT_FINISHED, 64, &ok); | |
250 | ||
251 | if (!ok) | |
252 | return ((int)n); | |
253 | ||
254 | /* If this occurs, we have missed a message */ | |
255 | if (!s->s3->change_cipher_spec) { | |
256 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
257 | SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS); | |
258 | goto f_err; | |
259 | } | |
260 | s->s3->change_cipher_spec = 0; | |
261 | ||
262 | p = (unsigned char *)s->init_msg; | |
263 | i = s->s3->tmp.peer_finish_md_len; | |
264 | ||
265 | if (i != n) { | |
266 | al = SSL_AD_DECODE_ERROR; | |
267 | SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_BAD_DIGEST_LENGTH); | |
268 | goto f_err; | |
269 | } | |
270 | ||
271 | if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) { | |
272 | al = SSL_AD_DECRYPT_ERROR; | |
273 | SSLerr(SSL_F_SSL3_GET_FINISHED, SSL_R_DIGEST_CHECK_FAILED); | |
274 | goto f_err; | |
275 | } | |
276 | ||
277 | /* | |
278 | * Copy the finished so we can use it for renegotiation checks | |
279 | */ | |
280 | if (s->type == SSL_ST_ACCEPT) { | |
281 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
282 | memcpy(s->s3->previous_client_finished, s->s3->tmp.peer_finish_md, i); | |
283 | s->s3->previous_client_finished_len = i; | |
284 | } else { | |
285 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
286 | memcpy(s->s3->previous_server_finished, s->s3->tmp.peer_finish_md, i); | |
287 | s->s3->previous_server_finished_len = i; | |
288 | } | |
289 | ||
290 | return (1); | |
291 | f_err: | |
292 | ssl3_send_alert(s, SSL3_AL_FATAL, al); | |
293 | return (0); | |
294 | } | |
d02b48c6 | 295 | |
6977c7e2 TH |
296 | /*- |
297 | * for these 2 messages, we need to | |
ae5c8664 MC |
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 | |
d02b48c6 | 304 | */ |
6b691a5c | 305 | int ssl3_send_change_cipher_spec(SSL *s, int a, int b) |
ae5c8664 MC |
306 | { |
307 | unsigned char *p; | |
d02b48c6 | 308 | |
ae5c8664 MC |
309 | if (s->state == a) { |
310 | p = (unsigned char *)s->init_buf->data; | |
311 | *p = SSL3_MT_CCS; | |
312 | s->init_num = 1; | |
313 | s->init_off = 0; | |
d02b48c6 | 314 | |
ae5c8664 MC |
315 | s->state = b; |
316 | } | |
d02b48c6 | 317 | |
ae5c8664 MC |
318 | /* SSL3_ST_CW_CHANGE_B */ |
319 | return (ssl3_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC)); | |
320 | } | |
d02b48c6 | 321 | |
7e65b21a | 322 | unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk) |
ae5c8664 MC |
323 | { |
324 | unsigned char *p; | |
325 | unsigned long l = 3 + SSL_HM_HEADER_LENGTH(s); | |
326 | ||
327 | if (!ssl_add_cert_chain(s, cpk, &l)) | |
328 | return 0; | |
329 | ||
330 | l -= 3 + SSL_HM_HEADER_LENGTH(s); | |
331 | p = ssl_handshake_start(s); | |
332 | l2n3(l, p); | |
333 | l += 3; | |
334 | ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l); | |
335 | 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'. | |
52732b38 | 342 | */ |
6b691a5c | 343 | long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) |
ae5c8664 MC |
344 | { |
345 | unsigned char *p; | |
346 | unsigned long l; | |
347 | long n; | |
348 | int i, al; | |
349 | ||
350 | if (s->s3->tmp.reuse_message) { | |
351 | s->s3->tmp.reuse_message = 0; | |
352 | if ((mt >= 0) && (s->s3->tmp.message_type != mt)) { | |
353 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
354 | SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE); | |
355 | goto f_err; | |
356 | } | |
357 | *ok = 1; | |
358 | s->state = stn; | |
bc9563f8 | 359 | s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; |
ae5c8664 MC |
360 | s->init_num = (int)s->s3->tmp.message_size; |
361 | return s->init_num; | |
362 | } | |
363 | ||
364 | p = (unsigned char *)s->init_buf->data; | |
365 | ||
bc9563f8 | 366 | if (s->state == st1) { /* s->init_num < SSL3_HM_HEADER_LENGTH */ |
ae5c8664 MC |
367 | int skip_message; |
368 | ||
369 | do { | |
bc9563f8 | 370 | while (s->init_num < SSL3_HM_HEADER_LENGTH) { |
ae5c8664 MC |
371 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, |
372 | &p[s->init_num], | |
bc9563f8 DSH |
373 | SSL3_HM_HEADER_LENGTH - |
374 | s->init_num, 0); | |
ae5c8664 MC |
375 | if (i <= 0) { |
376 | s->rwstate = SSL_READING; | |
377 | *ok = 0; | |
378 | return i; | |
379 | } | |
380 | s->init_num += i; | |
381 | } | |
382 | ||
383 | skip_message = 0; | |
384 | if (!s->server) | |
385 | if (p[0] == SSL3_MT_HELLO_REQUEST) | |
386 | /* | |
387 | * The server may always send 'Hello Request' messages -- | |
388 | * we are doing a handshake anyway now, so ignore them if | |
389 | * their format is correct. Does not count for 'Finished' | |
390 | * MAC. | |
391 | */ | |
392 | if (p[1] == 0 && p[2] == 0 && p[3] == 0) { | |
393 | s->init_num = 0; | |
394 | skip_message = 1; | |
395 | ||
396 | if (s->msg_callback) | |
397 | s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, | |
bc9563f8 DSH |
398 | p, SSL3_HM_HEADER_LENGTH, s, |
399 | s->msg_callback_arg); | |
ae5c8664 MC |
400 | } |
401 | } | |
402 | while (skip_message); | |
403 | ||
bc9563f8 | 404 | /* s->init_num == SSL3_HM_HEADER_LENGTH */ |
ae5c8664 MC |
405 | |
406 | if ((mt >= 0) && (*p != mt)) { | |
407 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
408 | SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_UNEXPECTED_MESSAGE); | |
409 | goto f_err; | |
410 | } | |
411 | ||
412 | s->s3->tmp.message_type = *(p++); | |
413 | ||
414 | n2l3(p, l); | |
415 | if (l > (unsigned long)max) { | |
416 | al = SSL_AD_ILLEGAL_PARAMETER; | |
417 | SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE); | |
418 | goto f_err; | |
419 | } | |
006a788c DSH |
420 | /* |
421 | * Make buffer slightly larger than message length as a precaution | |
422 | * against small OOB reads e.g. CVE-2016-6306 | |
423 | */ | |
bc9563f8 DSH |
424 | if (l |
425 | && !BUF_MEM_grow_clean(s->init_buf, | |
006a788c | 426 | (int)l + SSL3_HM_HEADER_LENGTH + 16)) { |
ae5c8664 MC |
427 | SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB); |
428 | goto err; | |
429 | } | |
430 | s->s3->tmp.message_size = l; | |
431 | s->state = stn; | |
432 | ||
bc9563f8 | 433 | s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; |
ae5c8664 MC |
434 | s->init_num = 0; |
435 | } | |
436 | ||
437 | /* next state (stn) */ | |
438 | p = s->init_msg; | |
439 | n = s->s3->tmp.message_size - s->init_num; | |
440 | while (n > 0) { | |
441 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &p[s->init_num], | |
442 | n, 0); | |
443 | if (i <= 0) { | |
444 | s->rwstate = SSL_READING; | |
445 | *ok = 0; | |
446 | return i; | |
447 | } | |
448 | s->init_num += i; | |
449 | n -= i; | |
450 | } | |
68d2cf51 | 451 | |
68b33cc5 | 452 | #ifndef OPENSSL_NO_NEXTPROTONEG |
ae5c8664 MC |
453 | /* |
454 | * If receiving Finished, record MAC of prior handshake messages for | |
455 | * Finished verification. | |
456 | */ | |
457 | if (*s->init_buf->data == SSL3_MT_FINISHED) | |
458 | ssl3_take_mac(s); | |
68b33cc5 | 459 | #endif |
68d2cf51 | 460 | |
ae5c8664 | 461 | /* Feed this message into MAC computation. */ |
bc9563f8 DSH |
462 | ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, |
463 | s->init_num + SSL3_HM_HEADER_LENGTH); | |
ae5c8664 MC |
464 | if (s->msg_callback) |
465 | s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, | |
bc9563f8 DSH |
466 | (size_t)s->init_num + SSL3_HM_HEADER_LENGTH, s, |
467 | s->msg_callback_arg); | |
ae5c8664 MC |
468 | *ok = 1; |
469 | return s->init_num; | |
470 | f_err: | |
471 | ssl3_send_alert(s, SSL3_AL_FATAL, al); | |
472 | err: | |
473 | *ok = 0; | |
474 | return (-1); | |
475 | } | |
d02b48c6 | 476 | |
6b691a5c | 477 | int ssl_cert_type(X509 *x, EVP_PKEY *pkey) |
ae5c8664 MC |
478 | { |
479 | EVP_PKEY *pk; | |
480 | int ret = -1, i; | |
481 | ||
482 | if (pkey == NULL) | |
483 | pk = X509_get_pubkey(x); | |
484 | else | |
485 | pk = pkey; | |
486 | if (pk == NULL) | |
487 | goto err; | |
488 | ||
489 | i = pk->type; | |
490 | if (i == EVP_PKEY_RSA) { | |
491 | ret = SSL_PKEY_RSA_ENC; | |
492 | } else if (i == EVP_PKEY_DSA) { | |
493 | ret = SSL_PKEY_DSA_SIGN; | |
494 | } | |
ea262260 | 495 | #ifndef OPENSSL_NO_EC |
ae5c8664 MC |
496 | else if (i == EVP_PKEY_EC) { |
497 | ret = SSL_PKEY_ECC; | |
498 | } | |
ea262260 | 499 | #endif |
ae5c8664 MC |
500 | else if (i == NID_id_GostR3410_94 || i == NID_id_GostR3410_94_cc) { |
501 | ret = SSL_PKEY_GOST94; | |
502 | } else if (i == NID_id_GostR3410_2001 || i == NID_id_GostR3410_2001_cc) { | |
503 | ret = SSL_PKEY_GOST01; | |
504 | } else if (x && (i == EVP_PKEY_DH || i == EVP_PKEY_DHX)) { | |
505 | /* | |
506 | * For DH two cases: DH certificate signed with RSA and DH | |
507 | * certificate signed with DSA. | |
508 | */ | |
509 | i = X509_certificate_type(x, pk); | |
510 | if (i & EVP_PKS_RSA) | |
511 | ret = SSL_PKEY_DH_RSA; | |
512 | else if (i & EVP_PKS_DSA) | |
513 | ret = SSL_PKEY_DH_DSA; | |
514 | } | |
515 | ||
516 | err: | |
517 | if (!pkey) | |
518 | EVP_PKEY_free(pk); | |
519 | return (ret); | |
520 | } | |
d02b48c6 | 521 | |
6b691a5c | 522 | int ssl_verify_alarm_type(long type) |
ae5c8664 MC |
523 | { |
524 | int al; | |
525 | ||
526 | switch (type) { | |
527 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
528 | case X509_V_ERR_UNABLE_TO_GET_CRL: | |
529 | case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: | |
530 | al = SSL_AD_UNKNOWN_CA; | |
531 | break; | |
532 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: | |
533 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: | |
534 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: | |
535 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
536 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
537 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: | |
538 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: | |
539 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
540 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
541 | case X509_V_ERR_CERT_UNTRUSTED: | |
542 | case X509_V_ERR_CERT_REJECTED: | |
5553a127 VD |
543 | case X509_V_ERR_HOSTNAME_MISMATCH: |
544 | case X509_V_ERR_EMAIL_MISMATCH: | |
545 | case X509_V_ERR_IP_ADDRESS_MISMATCH: | |
ae5c8664 MC |
546 | al = SSL_AD_BAD_CERTIFICATE; |
547 | break; | |
548 | case X509_V_ERR_CERT_SIGNATURE_FAILURE: | |
549 | case X509_V_ERR_CRL_SIGNATURE_FAILURE: | |
550 | al = SSL_AD_DECRYPT_ERROR; | |
551 | break; | |
552 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
553 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
554 | al = SSL_AD_CERTIFICATE_EXPIRED; | |
555 | break; | |
556 | case X509_V_ERR_CERT_REVOKED: | |
557 | al = SSL_AD_CERTIFICATE_REVOKED; | |
558 | break; | |
5553a127 | 559 | case X509_V_ERR_UNSPECIFIED: |
ae5c8664 | 560 | case X509_V_ERR_OUT_OF_MEM: |
5553a127 VD |
561 | case X509_V_ERR_INVALID_CALL: |
562 | case X509_V_ERR_STORE_LOOKUP: | |
ae5c8664 MC |
563 | al = SSL_AD_INTERNAL_ERROR; |
564 | break; | |
565 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: | |
566 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: | |
567 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: | |
568 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: | |
569 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: | |
570 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: | |
571 | case X509_V_ERR_INVALID_CA: | |
572 | al = SSL_AD_UNKNOWN_CA; | |
573 | break; | |
574 | case X509_V_ERR_APPLICATION_VERIFICATION: | |
575 | al = SSL_AD_HANDSHAKE_FAILURE; | |
576 | break; | |
577 | case X509_V_ERR_INVALID_PURPOSE: | |
578 | al = SSL_AD_UNSUPPORTED_CERTIFICATE; | |
579 | break; | |
580 | default: | |
581 | al = SSL_AD_CERTIFICATE_UNKNOWN; | |
582 | break; | |
583 | } | |
584 | return (al); | |
585 | } | |
d02b48c6 | 586 | |
474b3b1c | 587 | #ifndef OPENSSL_NO_BUF_FREELISTS |
e19d4a99 MC |
588 | /*- |
589 | * On some platforms, malloc() performance is bad enough that you can't just | |
8671b898 BL |
590 | * free() and malloc() buffers all the time, so we need to use freelists from |
591 | * unused buffers. Currently, each freelist holds memory chunks of only a | |
592 | * given size (list->chunklen); other sized chunks are freed and malloced. | |
593 | * This doesn't help much if you're using many different SSL option settings | |
594 | * with a given context. (The options affecting buffer size are | |
595 | * max_send_fragment, read buffer vs write buffer, | |
596 | * SSL_OP_MICROSOFT_BIG_WRITE_BUFFER, SSL_OP_NO_COMPRESSION, and | |
597 | * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS.) Using a separate freelist for every | |
598 | * possible size is not an option, since max_send_fragment can take on many | |
599 | * different values. | |
600 | * | |
601 | * If you are on a platform with a slow malloc(), and you're using SSL | |
602 | * connections with many different settings for these options, and you need to | |
603 | * use the SSL_MOD_RELEASE_BUFFERS feature, you have a few options: | |
604 | * - Link against a faster malloc implementation. | |
605 | * - Use a separate SSL_CTX for each option set. | |
606 | * - Improve this code. | |
607 | */ | |
ae5c8664 MC |
608 | static void *freelist_extract(SSL_CTX *ctx, int for_read, int sz) |
609 | { | |
610 | SSL3_BUF_FREELIST *list; | |
611 | SSL3_BUF_FREELIST_ENTRY *ent = NULL; | |
612 | void *result = NULL; | |
613 | ||
614 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
615 | list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist; | |
616 | if (list != NULL && sz == (int)list->chunklen) | |
617 | ent = list->head; | |
618 | if (ent != NULL) { | |
619 | list->head = ent->next; | |
620 | result = ent; | |
621 | if (--list->len == 0) | |
622 | list->chunklen = 0; | |
623 | } | |
624 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
625 | if (!result) | |
626 | result = OPENSSL_malloc(sz); | |
627 | return result; | |
8671b898 BL |
628 | } |
629 | ||
ae5c8664 MC |
630 | static void freelist_insert(SSL_CTX *ctx, int for_read, size_t sz, void *mem) |
631 | { | |
632 | SSL3_BUF_FREELIST *list; | |
633 | SSL3_BUF_FREELIST_ENTRY *ent; | |
634 | ||
635 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
636 | list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist; | |
637 | if (list != NULL && | |
638 | (sz == list->chunklen || list->chunklen == 0) && | |
639 | list->len < ctx->freelist_max_len && sz >= sizeof(*ent)) { | |
640 | list->chunklen = sz; | |
641 | ent = mem; | |
642 | ent->next = list->head; | |
643 | list->head = ent; | |
644 | ++list->len; | |
645 | mem = NULL; | |
646 | } | |
647 | ||
648 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
649 | if (mem) | |
650 | OPENSSL_free(mem); | |
651 | } | |
8671b898 | 652 | #else |
ae5c8664 MC |
653 | # define freelist_extract(c,fr,sz) OPENSSL_malloc(sz) |
654 | # define freelist_insert(c,fr,sz,m) OPENSSL_free(m) | |
8671b898 BL |
655 | #endif |
656 | ||
657 | int ssl3_setup_read_buffer(SSL *s) | |
ae5c8664 MC |
658 | { |
659 | unsigned char *p; | |
660 | size_t len, align = 0, headerlen; | |
661 | ||
28643a16 | 662 | if (SSL_IS_DTLS(s)) |
ae5c8664 MC |
663 | headerlen = DTLS1_RT_HEADER_LENGTH; |
664 | else | |
665 | headerlen = SSL3_RT_HEADER_LENGTH; | |
a4d64c7f AP |
666 | |
667 | #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 | |
ae5c8664 | 668 | align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1); |
a4d64c7f | 669 | #endif |
d02b48c6 | 670 | |
ae5c8664 MC |
671 | if (s->s3->rbuf.buf == NULL) { |
672 | len = SSL3_RT_MAX_PLAIN_LENGTH | |
673 | + SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align; | |
674 | if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER) { | |
675 | s->s3->init_extra = 1; | |
676 | len += SSL3_RT_MAX_EXTRA; | |
677 | } | |
566dda07 | 678 | #ifndef OPENSSL_NO_COMP |
ae5c8664 MC |
679 | if (!(s->options & SSL_OP_NO_COMPRESSION)) |
680 | len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; | |
566dda07 | 681 | #endif |
ae5c8664 MC |
682 | if ((p = freelist_extract(s->ctx, 1, len)) == NULL) |
683 | goto err; | |
684 | s->s3->rbuf.buf = p; | |
685 | s->s3->rbuf.len = len; | |
686 | } | |
687 | ||
688 | s->packet = &(s->s3->rbuf.buf[0]); | |
689 | return 1; | |
690 | ||
691 | err: | |
692 | SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER, ERR_R_MALLOC_FAILURE); | |
693 | return 0; | |
694 | } | |
8671b898 BL |
695 | |
696 | int ssl3_setup_write_buffer(SSL *s) | |
ae5c8664 MC |
697 | { |
698 | unsigned char *p; | |
699 | size_t len, align = 0, headerlen; | |
f18e1025 | 700 | |
28643a16 | 701 | if (SSL_IS_DTLS(s)) |
ae5c8664 MC |
702 | headerlen = DTLS1_RT_HEADER_LENGTH + 1; |
703 | else | |
704 | headerlen = SSL3_RT_HEADER_LENGTH; | |
8671b898 BL |
705 | |
706 | #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 | |
ae5c8664 | 707 | align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1); |
8671b898 BL |
708 | #endif |
709 | ||
ae5c8664 MC |
710 | if (s->s3->wbuf.buf == NULL) { |
711 | len = s->max_send_fragment | |
712 | + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align; | |
566dda07 | 713 | #ifndef OPENSSL_NO_COMP |
ae5c8664 MC |
714 | if (!(s->options & SSL_OP_NO_COMPRESSION)) |
715 | len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; | |
566dda07 | 716 | #endif |
ae5c8664 MC |
717 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) |
718 | len += headerlen + align + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD; | |
8671b898 | 719 | |
ae5c8664 MC |
720 | if ((p = freelist_extract(s->ctx, 0, len)) == NULL) |
721 | goto err; | |
722 | s->s3->wbuf.buf = p; | |
723 | s->s3->wbuf.len = len; | |
724 | } | |
8671b898 | 725 | |
ae5c8664 | 726 | return 1; |
8671b898 | 727 | |
ae5c8664 MC |
728 | err: |
729 | SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE); | |
730 | return 0; | |
731 | } | |
8671b898 BL |
732 | |
733 | int ssl3_setup_buffers(SSL *s) | |
ae5c8664 MC |
734 | { |
735 | if (!ssl3_setup_read_buffer(s)) | |
736 | return 0; | |
737 | if (!ssl3_setup_write_buffer(s)) | |
738 | return 0; | |
739 | return 1; | |
740 | } | |
8671b898 BL |
741 | |
742 | int ssl3_release_write_buffer(SSL *s) | |
ae5c8664 MC |
743 | { |
744 | if (s->s3->wbuf.buf != NULL) { | |
745 | freelist_insert(s->ctx, 0, s->s3->wbuf.len, s->s3->wbuf.buf); | |
746 | s->s3->wbuf.buf = NULL; | |
747 | } | |
748 | return 1; | |
749 | } | |
8671b898 BL |
750 | |
751 | int ssl3_release_read_buffer(SSL *s) | |
ae5c8664 MC |
752 | { |
753 | if (s->s3->rbuf.buf != NULL) { | |
754 | freelist_insert(s->ctx, 1, s->s3->rbuf.len, s->s3->rbuf.buf); | |
755 | s->s3->rbuf.buf = NULL; | |
756 | } | |
757 | return 1; | |
758 | } |