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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. | |
0f113f3e | 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). | |
0f113f3e | 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. | |
0f113f3e | 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 :-). | |
0f113f3e | 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)" | |
0f113f3e | 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. | |
0f113f3e | 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 | |
0f113f3e | 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. | |
0f113f3e | 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 | |
0f113f3e 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) |
0f113f3e 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 | |
b9908bf9 | 159 | int tls_construct_finished(SSL *s, const char *sender, int slen) |
0f113f3e MC |
160 | { |
161 | unsigned char *p; | |
162 | int i; | |
163 | unsigned long l; | |
164 | ||
b9908bf9 | 165 | p = ssl_handshake_start(s); |
0f113f3e | 166 | |
b9908bf9 MC |
167 | i = s->method->ssl3_enc->final_finish_mac(s, |
168 | sender, slen, | |
169 | s->s3->tmp.finish_md); | |
170 | if (i <= 0) | |
171 | return 0; | |
172 | s->s3->tmp.finish_md_len = i; | |
173 | memcpy(p, s->s3->tmp.finish_md, i); | |
174 | l = i; | |
0f113f3e | 175 | |
b9908bf9 MC |
176 | /* |
177 | * Copy the finished so we can use it for renegotiation checks | |
178 | */ | |
23a635c0 | 179 | if (!s->server) { |
b9908bf9 MC |
180 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); |
181 | memcpy(s->s3->previous_client_finished, s->s3->tmp.finish_md, i); | |
182 | s->s3->previous_client_finished_len = i; | |
183 | } else { | |
184 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
185 | memcpy(s->s3->previous_server_finished, s->s3->tmp.finish_md, i); | |
186 | s->s3->previous_server_finished_len = i; | |
187 | } | |
0f113f3e | 188 | |
b9908bf9 MC |
189 | if (!ssl_set_handshake_header(s, SSL3_MT_FINISHED, l)) { |
190 | SSLerr(SSL_F_TLS_CONSTRUCT_FINISHED, ERR_R_INTERNAL_ERROR); | |
191 | return 0; | |
0f113f3e MC |
192 | } |
193 | ||
b9908bf9 | 194 | return 1; |
0f113f3e | 195 | } |
d02b48c6 | 196 | |
bf48836c | 197 | #ifndef OPENSSL_NO_NEXTPROTONEG |
0f113f3e MC |
198 | /* |
199 | * ssl3_take_mac calculates the Finished MAC for the handshakes messages seen | |
200 | * to far. | |
201 | */ | |
ee2ffc27 | 202 | static void ssl3_take_mac(SSL *s) |
0f113f3e MC |
203 | { |
204 | const char *sender; | |
205 | int slen; | |
206 | /* | |
207 | * If no new cipher setup return immediately: other functions will set | |
208 | * the appropriate error. | |
209 | */ | |
210 | if (s->s3->tmp.new_cipher == NULL) | |
211 | return; | |
49ae7423 | 212 | if (!s->server) { |
0f113f3e MC |
213 | sender = s->method->ssl3_enc->server_finished_label; |
214 | slen = s->method->ssl3_enc->server_finished_label_len; | |
215 | } else { | |
216 | sender = s->method->ssl3_enc->client_finished_label; | |
217 | slen = s->method->ssl3_enc->client_finished_label_len; | |
218 | } | |
219 | ||
220 | s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s, | |
221 | sender, | |
222 | slen, | |
223 | s->s3->tmp.peer_finish_md); | |
224 | } | |
ee2ffc27 BL |
225 | #endif |
226 | ||
b9908bf9 MC |
227 | enum MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, long n) |
228 | { | |
229 | int al; | |
230 | ||
657da85e MC |
231 | /* |
232 | * 'Change Cipher Spec' is just a single byte, which should already have | |
c69f2adf MC |
233 | * been consumed by ssl_get_message() so there should be no bytes left, |
234 | * unless we're using DTLS1_BAD_VER, which has an extra 2 bytes | |
657da85e | 235 | */ |
c69f2adf MC |
236 | if (SSL_IS_DTLS(s)) { |
237 | if ((s->version == DTLS1_BAD_VER && n != DTLS1_CCS_HEADER_LENGTH + 1) | |
238 | || (s->version != DTLS1_BAD_VER | |
239 | && n != DTLS1_CCS_HEADER_LENGTH - 1)) { | |
240 | al = SSL_AD_ILLEGAL_PARAMETER; | |
b9908bf9 MC |
241 | SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, |
242 | SSL_R_BAD_CHANGE_CIPHER_SPEC); | |
c69f2adf MC |
243 | goto f_err; |
244 | } | |
245 | } else { | |
246 | if (n != 0) { | |
247 | al = SSL_AD_ILLEGAL_PARAMETER; | |
b9908bf9 MC |
248 | SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, |
249 | SSL_R_BAD_CHANGE_CIPHER_SPEC); | |
c69f2adf MC |
250 | goto f_err; |
251 | } | |
657da85e MC |
252 | } |
253 | ||
254 | /* Check we have a cipher to change to */ | |
255 | if (s->s3->tmp.new_cipher == NULL) { | |
256 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
b9908bf9 | 257 | SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, SSL_R_CCS_RECEIVED_EARLY); |
657da85e MC |
258 | goto f_err; |
259 | } | |
260 | ||
261 | s->s3->change_cipher_spec = 1; | |
262 | if (!ssl3_do_change_cipher_spec(s)) { | |
263 | al = SSL_AD_INTERNAL_ERROR; | |
b9908bf9 | 264 | SSLerr(SSL_F_TLS_PROCESS_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR); |
657da85e MC |
265 | goto f_err; |
266 | } | |
267 | ||
c69f2adf MC |
268 | if (SSL_IS_DTLS(s)) { |
269 | dtls1_reset_seq_numbers(s, SSL3_CC_READ); | |
270 | ||
271 | if (s->version == DTLS1_BAD_VER) | |
272 | s->d1->handshake_read_seq++; | |
273 | ||
274 | #ifndef OPENSSL_NO_SCTP | |
275 | /* | |
276 | * Remember that a CCS has been received, so that an old key of | |
277 | * SCTP-Auth can be deleted when a CCS is sent. Will be ignored if no | |
278 | * SCTP is used | |
279 | */ | |
280 | BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD, 1, NULL); | |
281 | #endif | |
282 | } | |
283 | ||
b9908bf9 | 284 | return MSG_PROCESS_CONTINUE_READING; |
657da85e MC |
285 | f_err: |
286 | ssl3_send_alert(s, SSL3_AL_FATAL, al); | |
b9908bf9 MC |
287 | statem_set_error(s); |
288 | return MSG_PROCESS_ERROR; | |
657da85e MC |
289 | } |
290 | ||
b9908bf9 MC |
291 | enum MSG_PROCESS_RETURN tls_process_finished(SSL *s, unsigned long n) |
292 | { | |
293 | int al, i; | |
294 | unsigned char *p; | |
295 | ||
0f113f3e MC |
296 | /* If this occurs, we have missed a message */ |
297 | if (!s->s3->change_cipher_spec) { | |
298 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
b9908bf9 | 299 | SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_GOT_A_FIN_BEFORE_A_CCS); |
0f113f3e MC |
300 | goto f_err; |
301 | } | |
302 | s->s3->change_cipher_spec = 0; | |
303 | ||
304 | p = (unsigned char *)s->init_msg; | |
305 | i = s->s3->tmp.peer_finish_md_len; | |
306 | ||
b9908bf9 | 307 | if (i < 0 || (unsigned long)i != n) { |
0f113f3e | 308 | al = SSL_AD_DECODE_ERROR; |
b9908bf9 | 309 | SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_BAD_DIGEST_LENGTH); |
0f113f3e MC |
310 | goto f_err; |
311 | } | |
312 | ||
313 | if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) { | |
314 | al = SSL_AD_DECRYPT_ERROR; | |
b9908bf9 | 315 | SSLerr(SSL_F_TLS_PROCESS_FINISHED, SSL_R_DIGEST_CHECK_FAILED); |
0f113f3e MC |
316 | goto f_err; |
317 | } | |
318 | ||
319 | /* | |
320 | * Copy the finished so we can use it for renegotiation checks | |
321 | */ | |
23a635c0 | 322 | if (s->server) { |
0f113f3e MC |
323 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); |
324 | memcpy(s->s3->previous_client_finished, s->s3->tmp.peer_finish_md, i); | |
325 | s->s3->previous_client_finished_len = i; | |
326 | } else { | |
327 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
328 | memcpy(s->s3->previous_server_finished, s->s3->tmp.peer_finish_md, i); | |
329 | s->s3->previous_server_finished_len = i; | |
330 | } | |
331 | ||
b9908bf9 | 332 | return MSG_PROCESS_CONTINUE_PROCESSING; |
0f113f3e MC |
333 | f_err: |
334 | ssl3_send_alert(s, SSL3_AL_FATAL, al); | |
b9908bf9 MC |
335 | statem_set_error(s); |
336 | return MSG_PROCESS_ERROR; | |
0f113f3e | 337 | } |
d02b48c6 | 338 | |
b9908bf9 MC |
339 | int tls_construct_change_cipher_spec(SSL *s) |
340 | { | |
341 | unsigned char *p; | |
342 | ||
343 | p = (unsigned char *)s->init_buf->data; | |
344 | *p = SSL3_MT_CCS; | |
345 | s->init_num = 1; | |
346 | s->init_off = 0; | |
347 | ||
348 | return 1; | |
349 | } | |
350 | ||
c526ed41 | 351 | unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk) |
0f113f3e MC |
352 | { |
353 | unsigned char *p; | |
354 | unsigned long l = 3 + SSL_HM_HEADER_LENGTH(s); | |
355 | ||
356 | if (!ssl_add_cert_chain(s, cpk, &l)) | |
357 | return 0; | |
358 | ||
359 | l -= 3 + SSL_HM_HEADER_LENGTH(s); | |
360 | p = ssl_handshake_start(s); | |
361 | l2n3(l, p); | |
362 | l += 3; | |
77d514c5 | 363 | |
61986d32 | 364 | if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l)) { |
77d514c5 MC |
365 | SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN, ERR_R_INTERNAL_ERROR); |
366 | return 0; | |
367 | } | |
0f113f3e MC |
368 | return l + SSL_HM_HEADER_LENGTH(s); |
369 | } | |
370 | ||
8723588e MC |
371 | enum WORK_STATE tls_finish_handshake(SSL *s, enum WORK_STATE wst) |
372 | { | |
373 | void (*cb) (const SSL *ssl, int type, int val) = NULL; | |
374 | ||
375 | #ifndef OPENSSL_NO_SCTP | |
376 | if (SSL_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(s))) { | |
377 | enum WORK_STATE ret; | |
378 | ret = dtls_wait_for_dry(s); | |
379 | if (ret != WORK_FINISHED_CONTINUE) | |
380 | return ret; | |
381 | } | |
382 | #endif | |
383 | ||
384 | /* clean a few things up */ | |
385 | ssl3_cleanup_key_block(s); | |
473483d4 MC |
386 | |
387 | if (!SSL_IS_DTLS(s)) { | |
388 | /* | |
389 | * We don't do this in DTLS because we may still need the init_buf | |
390 | * in case there are any unexpected retransmits | |
391 | */ | |
392 | BUF_MEM_free(s->init_buf); | |
393 | s->init_buf = NULL; | |
394 | } | |
8723588e MC |
395 | |
396 | ssl_free_wbio_buffer(s); | |
397 | ||
398 | s->init_num = 0; | |
399 | ||
400 | if (!s->server || s->renegotiate == 2) { | |
401 | /* skipped if we just sent a HelloRequest */ | |
402 | s->renegotiate = 0; | |
403 | s->new_session = 0; | |
404 | ||
405 | if (s->server) { | |
406 | s->renegotiate = 0; | |
407 | s->new_session = 0; | |
408 | ||
409 | ssl_update_cache(s, SSL_SESS_CACHE_SERVER); | |
410 | ||
411 | s->ctx->stats.sess_accept_good++; | |
412 | s->handshake_func = ssl3_accept; | |
413 | } else { | |
414 | ssl_update_cache(s, SSL_SESS_CACHE_CLIENT); | |
415 | if (s->hit) | |
416 | s->ctx->stats.sess_hit++; | |
417 | ||
418 | s->handshake_func = ssl3_connect; | |
419 | s->ctx->stats.sess_connect_good++; | |
420 | } | |
421 | ||
422 | if (s->info_callback != NULL) | |
423 | cb = s->info_callback; | |
424 | else if (s->ctx->info_callback != NULL) | |
425 | cb = s->ctx->info_callback; | |
426 | ||
427 | if (cb != NULL) | |
428 | cb(s, SSL_CB_HANDSHAKE_DONE, 1); | |
429 | ||
430 | if (SSL_IS_DTLS(s)) { | |
431 | /* done with handshaking */ | |
432 | s->d1->handshake_read_seq = 0; | |
433 | s->d1->handshake_write_seq = 0; | |
434 | s->d1->next_handshake_write_seq = 0; | |
435 | } | |
436 | } | |
437 | ||
438 | return WORK_FINISHED_STOP; | |
439 | } | |
440 | ||
9ab930b2 MC |
441 | int tls_get_message_header(SSL *s, int *mt) |
442 | { | |
443 | /* s->init_num < SSL3_HM_HEADER_LENGTH */ | |
444 | int skip_message, i, recvd_type, al; | |
445 | unsigned char *p; | |
446 | unsigned long l; | |
447 | ||
448 | p = (unsigned char *)s->init_buf->data; | |
449 | ||
450 | do { | |
451 | while (s->init_num < SSL3_HM_HEADER_LENGTH) { | |
452 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &recvd_type, | |
453 | &p[s->init_num], SSL3_HM_HEADER_LENGTH - s->init_num, 0); | |
454 | if (i <= 0) { | |
455 | s->rwstate = SSL_READING; | |
456 | return 0; | |
32ec4153 | 457 | } |
9ab930b2 MC |
458 | if (recvd_type == SSL3_RT_CHANGE_CIPHER_SPEC) { |
459 | s->s3->tmp.message_type = *mt = SSL3_MT_CHANGE_CIPHER_SPEC; | |
460 | s->init_num = i - 1; | |
461 | s->s3->tmp.message_size = i; | |
462 | return 1; | |
463 | } else if (recvd_type != SSL3_RT_HANDSHAKE) { | |
464 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
465 | SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, SSL_R_CCS_RECEIVED_EARLY); | |
32ec4153 MC |
466 | goto f_err; |
467 | } | |
9ab930b2 MC |
468 | s->init_num += i; |
469 | } | |
470 | ||
471 | skip_message = 0; | |
472 | if (!s->server) | |
473 | if (p[0] == SSL3_MT_HELLO_REQUEST) | |
474 | /* | |
475 | * The server may always send 'Hello Request' messages -- | |
476 | * we are doing a handshake anyway now, so ignore them if | |
477 | * their format is correct. Does not count for 'Finished' | |
478 | * MAC. | |
479 | */ | |
480 | if (p[1] == 0 && p[2] == 0 && p[3] == 0) { | |
481 | s->init_num = 0; | |
482 | skip_message = 1; | |
483 | ||
484 | if (s->msg_callback) | |
485 | s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, | |
486 | p, SSL3_HM_HEADER_LENGTH, s, | |
487 | s->msg_callback_arg); | |
488 | } | |
489 | } while (skip_message); | |
490 | /* s->init_num == SSL3_HM_HEADER_LENGTH */ | |
491 | ||
492 | *mt = *p; | |
493 | s->s3->tmp.message_type = *(p++); | |
32ec4153 | 494 | |
9ab930b2 MC |
495 | if(RECORD_LAYER_is_sslv2_record(&s->rlayer)) { |
496 | /* | |
497 | * Only happens with SSLv3+ in an SSLv2 backward compatible | |
498 | * ClientHello | |
499 | */ | |
500 | /* | |
501 | * Total message size is the remaining record bytes to read | |
502 | * plus the SSL3_HM_HEADER_LENGTH bytes that we already read | |
503 | */ | |
504 | l = RECORD_LAYER_get_rrec_length(&s->rlayer) | |
505 | + SSL3_HM_HEADER_LENGTH; | |
506 | if (l && !BUF_MEM_grow_clean(s->init_buf, (int)l)) { | |
507 | SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, ERR_R_BUF_LIB); | |
508 | goto err; | |
509 | } | |
510 | s->s3->tmp.message_size = l; | |
511 | ||
512 | s->init_msg = s->init_buf->data; | |
513 | s->init_num = SSL3_HM_HEADER_LENGTH; | |
514 | } else { | |
515 | n2l3(p, l); | |
516 | /* BUF_MEM_grow takes an 'int' parameter */ | |
517 | if (l > (INT_MAX - SSL3_HM_HEADER_LENGTH)) { | |
518 | al = SSL_AD_ILLEGAL_PARAMETER; | |
519 | SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, SSL_R_EXCESSIVE_MESSAGE_SIZE); | |
520 | goto f_err; | |
32ec4153 | 521 | } |
9ab930b2 MC |
522 | if (l && !BUF_MEM_grow_clean(s->init_buf, |
523 | (int)l + SSL3_HM_HEADER_LENGTH)) { | |
524 | SSLerr(SSL_F_TLS_GET_MESSAGE_HEADER, ERR_R_BUF_LIB); | |
525 | goto err; | |
526 | } | |
527 | s->s3->tmp.message_size = l; | |
528 | ||
529 | s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; | |
530 | s->init_num = 0; | |
531 | } | |
532 | ||
533 | return 1; | |
534 | f_err: | |
535 | ssl3_send_alert(s, SSL3_AL_FATAL, al); | |
536 | err: | |
537 | return 0; | |
538 | } | |
539 | ||
540 | int tls_get_message_body(SSL *s, unsigned long *len) | |
541 | { | |
542 | long n; | |
543 | unsigned char *p; | |
544 | int i; | |
545 | ||
546 | if (s->s3->tmp.message_type == SSL3_MT_CHANGE_CIPHER_SPEC) { | |
547 | /* We've already read everything in */ | |
548 | *len = (unsigned long)s->init_num; | |
549 | return 1; | |
0f113f3e MC |
550 | } |
551 | ||
0f113f3e MC |
552 | p = s->init_msg; |
553 | n = s->s3->tmp.message_size - s->init_num; | |
554 | while (n > 0) { | |
657da85e MC |
555 | i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, NULL, |
556 | &p[s->init_num], n, 0); | |
0f113f3e MC |
557 | if (i <= 0) { |
558 | s->rwstate = SSL_READING; | |
9ab930b2 MC |
559 | *len = 0; |
560 | return 0; | |
0f113f3e MC |
561 | } |
562 | s->init_num += i; | |
563 | n -= i; | |
564 | } | |
ee2ffc27 | 565 | |
bf48836c | 566 | #ifndef OPENSSL_NO_NEXTPROTONEG |
0f113f3e MC |
567 | /* |
568 | * If receiving Finished, record MAC of prior handshake messages for | |
569 | * Finished verification. | |
570 | */ | |
571 | if (*s->init_buf->data == SSL3_MT_FINISHED) | |
572 | ssl3_take_mac(s); | |
ee2ffc27 BL |
573 | #endif |
574 | ||
0f113f3e | 575 | /* Feed this message into MAC computation. */ |
32ec4153 MC |
576 | if(RECORD_LAYER_is_sslv2_record(&s->rlayer)) { |
577 | ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num); | |
32ec4153 MC |
578 | if (s->msg_callback) |
579 | s->msg_callback(0, SSL2_VERSION, 0, s->init_buf->data, | |
580 | (size_t)s->init_num, s, s->msg_callback_arg); | |
581 | } else { | |
582 | ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, | |
583 | s->init_num + SSL3_HM_HEADER_LENGTH); | |
584 | if (s->msg_callback) | |
585 | s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, | |
586 | (size_t)s->init_num + SSL3_HM_HEADER_LENGTH, s, | |
587 | s->msg_callback_arg); | |
588 | } | |
589 | ||
9ab930b2 MC |
590 | /* |
591 | * init_num should never be negative...should probably be declared | |
592 | * unsigned | |
593 | */ | |
594 | if (s->init_num < 0) { | |
595 | SSLerr(SSL_F_TLS_GET_MESSAGE_BODY, ERR_R_INTERNAL_ERROR); | |
596 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); | |
597 | *len = 0; | |
598 | return 0; | |
599 | } | |
600 | *len = (unsigned long)s->init_num; | |
601 | return 1; | |
0f113f3e | 602 | } |
d02b48c6 | 603 | |
6b691a5c | 604 | int ssl_cert_type(X509 *x, EVP_PKEY *pkey) |
0f113f3e MC |
605 | { |
606 | EVP_PKEY *pk; | |
607 | int ret = -1, i; | |
608 | ||
609 | if (pkey == NULL) | |
610 | pk = X509_get_pubkey(x); | |
611 | else | |
612 | pk = pkey; | |
613 | if (pk == NULL) | |
614 | goto err; | |
615 | ||
616 | i = pk->type; | |
617 | if (i == EVP_PKEY_RSA) { | |
618 | ret = SSL_PKEY_RSA_ENC; | |
619 | } else if (i == EVP_PKEY_DSA) { | |
620 | ret = SSL_PKEY_DSA_SIGN; | |
621 | } | |
ea262260 | 622 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
623 | else if (i == EVP_PKEY_EC) { |
624 | ret = SSL_PKEY_ECC; | |
625 | } | |
ea262260 | 626 | #endif |
ade44dcb | 627 | else if (i == NID_id_GostR3410_2001) { |
0f113f3e MC |
628 | ret = SSL_PKEY_GOST01; |
629 | } else if (x && (i == EVP_PKEY_DH || i == EVP_PKEY_DHX)) { | |
630 | /* | |
631 | * For DH two cases: DH certificate signed with RSA and DH | |
632 | * certificate signed with DSA. | |
633 | */ | |
634 | i = X509_certificate_type(x, pk); | |
635 | if (i & EVP_PKS_RSA) | |
636 | ret = SSL_PKEY_DH_RSA; | |
637 | else if (i & EVP_PKS_DSA) | |
638 | ret = SSL_PKEY_DH_DSA; | |
639 | } | |
640 | ||
641 | err: | |
642 | if (!pkey) | |
643 | EVP_PKEY_free(pk); | |
644 | return (ret); | |
645 | } | |
d02b48c6 | 646 | |
6b691a5c | 647 | int ssl_verify_alarm_type(long type) |
0f113f3e MC |
648 | { |
649 | int al; | |
650 | ||
651 | switch (type) { | |
652 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
653 | case X509_V_ERR_UNABLE_TO_GET_CRL: | |
654 | case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: | |
655 | al = SSL_AD_UNKNOWN_CA; | |
656 | break; | |
657 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: | |
658 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: | |
659 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: | |
660 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
661 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
662 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: | |
663 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: | |
664 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
665 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
666 | case X509_V_ERR_CERT_UNTRUSTED: | |
667 | case X509_V_ERR_CERT_REJECTED: | |
668 | al = SSL_AD_BAD_CERTIFICATE; | |
669 | break; | |
670 | case X509_V_ERR_CERT_SIGNATURE_FAILURE: | |
671 | case X509_V_ERR_CRL_SIGNATURE_FAILURE: | |
672 | al = SSL_AD_DECRYPT_ERROR; | |
673 | break; | |
674 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
675 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
676 | al = SSL_AD_CERTIFICATE_EXPIRED; | |
677 | break; | |
678 | case X509_V_ERR_CERT_REVOKED: | |
679 | al = SSL_AD_CERTIFICATE_REVOKED; | |
680 | break; | |
681 | case X509_V_ERR_OUT_OF_MEM: | |
682 | al = SSL_AD_INTERNAL_ERROR; | |
683 | break; | |
684 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: | |
685 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: | |
686 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: | |
687 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: | |
688 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: | |
689 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: | |
690 | case X509_V_ERR_INVALID_CA: | |
691 | al = SSL_AD_UNKNOWN_CA; | |
692 | break; | |
693 | case X509_V_ERR_APPLICATION_VERIFICATION: | |
694 | al = SSL_AD_HANDSHAKE_FAILURE; | |
695 | break; | |
696 | case X509_V_ERR_INVALID_PURPOSE: | |
697 | al = SSL_AD_UNSUPPORTED_CERTIFICATE; | |
698 | break; | |
699 | default: | |
700 | al = SSL_AD_CERTIFICATE_UNKNOWN; | |
701 | break; | |
702 | } | |
703 | return (al); | |
704 | } | |
d02b48c6 | 705 | |
b362ccab | 706 | int ssl_allow_compression(SSL *s) |
0f113f3e MC |
707 | { |
708 | if (s->options & SSL_OP_NO_COMPRESSION) | |
709 | return 0; | |
710 | return ssl_security(s, SSL_SECOP_COMPRESSION, 0, 0, NULL); | |
711 | } |