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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. | |
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 | */ | |
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 | |
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 | */ | |
ea262260 BM |
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 | */ | |
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 | |
a661b653 | 127 | /* send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or SSL3_RT_CHANGE_CIPHER_SPEC) */ |
e7ecc7d4 BM |
128 | int ssl3_do_write(SSL *s, int type) |
129 | { | |
130 | int ret; | |
131 | ||
132 | ret=ssl3_write_bytes(s,type,&s->init_buf->data[s->init_off], | |
133 | s->init_num); | |
134 | if (ret < 0) return(-1); | |
135 | if (type == SSL3_RT_HANDSHAKE) | |
136 | /* should not be done for 'Hello Request's, but in that case | |
137 | * we'll ignore the result anyway */ | |
72b60351 | 138 | ssl3_finish_mac(s,(unsigned char *)&s->init_buf->data[s->init_off],ret); |
e7ecc7d4 BM |
139 | |
140 | if (ret == s->init_num) | |
a661b653 BM |
141 | { |
142 | if (s->msg_callback) | |
cf3a5ceb | 143 | s->msg_callback(1, s->version, type, s->init_buf->data, (size_t)(s->init_off + s->init_num), s, s->msg_callback_arg); |
e7ecc7d4 | 144 | return(1); |
a661b653 | 145 | } |
e7ecc7d4 BM |
146 | s->init_off+=ret; |
147 | s->init_num-=ret; | |
148 | return(0); | |
149 | } | |
150 | ||
c44f7540 | 151 | int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen) |
d02b48c6 | 152 | { |
173e72e6 | 153 | unsigned char *p; |
d02b48c6 RE |
154 | int i; |
155 | unsigned long l; | |
156 | ||
157 | if (s->state == a) | |
158 | { | |
173e72e6 | 159 | p = ssl_handshake_start(s); |
d02b48c6 | 160 | |
58964a49 | 161 | i=s->method->ssl3_enc->final_finish_mac(s, |
9fb617e2 | 162 | sender,slen,s->s3->tmp.finish_md); |
ed496b3d DSH |
163 | if (i == 0) |
164 | return 0; | |
9fb617e2 BM |
165 | s->s3->tmp.finish_md_len = i; |
166 | memcpy(p, s->s3->tmp.finish_md, i); | |
d02b48c6 | 167 | l=i; |
d02b48c6 | 168 | |
e0e79972 DSH |
169 | /* Copy the finished so we can use it for |
170 | renegotiation checks */ | |
171 | if(s->type == SSL_ST_CONNECT) | |
172 | { | |
173 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
174 | memcpy(s->s3->previous_client_finished, | |
175 | s->s3->tmp.finish_md, i); | |
176 | s->s3->previous_client_finished_len=i; | |
177 | } | |
178 | else | |
179 | { | |
180 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
181 | memcpy(s->s3->previous_server_finished, | |
182 | s->s3->tmp.finish_md, i); | |
183 | s->s3->previous_server_finished_len=i; | |
184 | } | |
185 | ||
bc36ee62 | 186 | #ifdef OPENSSL_SYS_WIN16 |
dfeab068 RE |
187 | /* MSVC 1.5 does not clear the top bytes of the word unless |
188 | * I do this. | |
189 | */ | |
190 | l&=0xffff; | |
191 | #endif | |
173e72e6 | 192 | ssl_set_handshake_header(s, SSL3_MT_FINISHED, l); |
d02b48c6 RE |
193 | s->state=b; |
194 | } | |
195 | ||
196 | /* SSL3_ST_SEND_xxxxxx_HELLO_B */ | |
173e72e6 | 197 | return ssl_do_write(s); |
d02b48c6 RE |
198 | } |
199 | ||
bf48836c | 200 | #ifndef OPENSSL_NO_NEXTPROTONEG |
ee2ffc27 BL |
201 | /* ssl3_take_mac calculates the Finished MAC for the handshakes messages seen to far. */ |
202 | static void ssl3_take_mac(SSL *s) | |
203 | { | |
204 | const char *sender; | |
205 | int slen; | |
8d65fdb6 DSH |
206 | /* If no new cipher setup return immediately: other functions will |
207 | * set the appropriate error. | |
208 | */ | |
209 | if (s->s3->tmp.new_cipher == NULL) | |
210 | return; | |
ee2ffc27 BL |
211 | if (s->state & SSL_ST_CONNECT) |
212 | { | |
213 | sender=s->method->ssl3_enc->server_finished_label; | |
214 | slen=s->method->ssl3_enc->server_finished_label_len; | |
215 | } | |
216 | else | |
217 | { | |
218 | sender=s->method->ssl3_enc->client_finished_label; | |
219 | slen=s->method->ssl3_enc->client_finished_label_len; | |
220 | } | |
221 | ||
222 | s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s, | |
223 | sender,slen,s->s3->tmp.peer_finish_md); | |
224 | } | |
225 | #endif | |
226 | ||
6b691a5c | 227 | int ssl3_get_finished(SSL *s, int a, int b) |
d02b48c6 | 228 | { |
58964a49 | 229 | int al,i,ok; |
d02b48c6 RE |
230 | long n; |
231 | unsigned char *p; | |
232 | ||
bf48836c | 233 | #ifdef OPENSSL_NO_NEXTPROTONEG |
d02b48c6 | 234 | /* the mac has already been generated when we received the |
9fb617e2 | 235 | * change cipher spec message and is in s->s3->tmp.peer_finish_md |
d02b48c6 | 236 | */ |
ee2ffc27 | 237 | #endif |
d02b48c6 | 238 | |
36d16f8e | 239 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
240 | a, |
241 | b, | |
242 | SSL3_MT_FINISHED, | |
243 | 64, /* should actually be 36+4 :-) */ | |
244 | &ok); | |
245 | ||
246 | if (!ok) return((int)n); | |
247 | ||
b35e9050 | 248 | /* If this occurs, we have missed a message */ |
d02b48c6 RE |
249 | if (!s->s3->change_cipher_spec) |
250 | { | |
58964a49 | 251 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
252 | SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS); |
253 | goto f_err; | |
254 | } | |
255 | s->s3->change_cipher_spec=0; | |
256 | ||
48948d53 | 257 | p = (unsigned char *)s->init_msg; |
9fb617e2 | 258 | i = s->s3->tmp.peer_finish_md_len; |
d02b48c6 | 259 | |
58964a49 | 260 | if (i != n) |
d02b48c6 | 261 | { |
58964a49 | 262 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
263 | SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH); |
264 | goto f_err; | |
265 | } | |
266 | ||
7c770d57 | 267 | if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0) |
d02b48c6 | 268 | { |
58964a49 | 269 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
270 | SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED); |
271 | goto f_err; | |
272 | } | |
273 | ||
e0e79972 DSH |
274 | /* Copy the finished so we can use it for |
275 | renegotiation checks */ | |
276 | if(s->type == SSL_ST_ACCEPT) | |
277 | { | |
278 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
279 | memcpy(s->s3->previous_client_finished, | |
280 | s->s3->tmp.peer_finish_md, i); | |
281 | s->s3->previous_client_finished_len=i; | |
282 | } | |
283 | else | |
284 | { | |
285 | OPENSSL_assert(i <= EVP_MAX_MD_SIZE); | |
286 | memcpy(s->s3->previous_server_finished, | |
287 | s->s3->tmp.peer_finish_md, i); | |
288 | s->s3->previous_server_finished_len=i; | |
289 | } | |
290 | ||
d02b48c6 RE |
291 | return(1); |
292 | f_err: | |
293 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
294 | return(0); | |
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 | */ | |
6b691a5c | 305 | int ssl3_send_change_cipher_spec(SSL *s, int a, int b) |
d02b48c6 RE |
306 | { |
307 | unsigned char *p; | |
308 | ||
309 | if (s->state == a) | |
310 | { | |
311 | p=(unsigned char *)s->init_buf->data; | |
312 | *p=SSL3_MT_CCS; | |
313 | s->init_num=1; | |
314 | s->init_off=0; | |
315 | ||
316 | s->state=b; | |
317 | } | |
318 | ||
319 | /* SSL3_ST_CW_CHANGE_B */ | |
320 | return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC)); | |
321 | } | |
322 | ||
c526ed41 | 323 | unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk) |
d02b48c6 RE |
324 | { |
325 | unsigned char *p; | |
173e72e6 | 326 | unsigned long l = 3 + SSL_HM_HEADER_LENGTH(s); |
cf56663f | 327 | |
c526ed41 | 328 | if (!ssl_add_cert_chain(s, cpk, &l)) |
4379d0e4 | 329 | return 0; |
dfeab068 | 330 | |
173e72e6 DSH |
331 | l -= 3 + SSL_HM_HEADER_LENGTH(s); |
332 | p = ssl_handshake_start(s); | |
d02b48c6 | 333 | l2n3(l,p); |
173e72e6 DSH |
334 | l += 3; |
335 | ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE, l); | |
336 | return l + SSL_HM_HEADER_LENGTH(s); | |
d02b48c6 RE |
337 | } |
338 | ||
52732b38 BM |
339 | /* Obtain handshake message of message type 'mt' (any if mt == -1), |
340 | * maximum acceptable body length 'max'. | |
341 | * The first four bytes (msg_type and length) are read in state 'st1', | |
342 | * the body is read in state 'stn'. | |
343 | */ | |
6b691a5c | 344 | long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) |
d02b48c6 RE |
345 | { |
346 | unsigned char *p; | |
347 | unsigned long l; | |
348 | long n; | |
349 | int i,al; | |
350 | ||
351 | if (s->s3->tmp.reuse_message) | |
352 | { | |
353 | s->s3->tmp.reuse_message=0; | |
354 | if ((mt >= 0) && (s->s3->tmp.message_type != mt)) | |
355 | { | |
58964a49 | 356 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
357 | SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); |
358 | goto f_err; | |
359 | } | |
360 | *ok=1; | |
48948d53 | 361 | s->init_msg = s->init_buf->data + 4; |
8f71fb8d BM |
362 | s->init_num = (int)s->s3->tmp.message_size; |
363 | return s->init_num; | |
d02b48c6 RE |
364 | } |
365 | ||
366 | p=(unsigned char *)s->init_buf->data; | |
367 | ||
b35e9050 | 368 | if (s->state == st1) /* s->init_num < 4 */ |
d02b48c6 | 369 | { |
45206340 BM |
370 | int skip_message; |
371 | ||
372 | do | |
d02b48c6 | 373 | { |
45206340 | 374 | while (s->init_num < 4) |
b35e9050 | 375 | { |
36d16f8e BL |
376 | i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE, |
377 | &p[s->init_num],4 - s->init_num, 0); | |
45206340 BM |
378 | if (i <= 0) |
379 | { | |
380 | s->rwstate=SSL_READING; | |
381 | *ok = 0; | |
382 | return i; | |
383 | } | |
384 | s->init_num+=i; | |
b35e9050 | 385 | } |
45206340 BM |
386 | |
387 | skip_message = 0; | |
388 | if (!s->server) | |
389 | if (p[0] == SSL3_MT_HELLO_REQUEST) | |
390 | /* The server may always send 'Hello Request' messages -- | |
391 | * we are doing a handshake anyway now, so ignore them | |
745c70e5 BM |
392 | * if their format is correct. Does not count for |
393 | * 'Finished' MAC. */ | |
45206340 | 394 | if (p[1] == 0 && p[2] == 0 &&p[3] == 0) |
3b0b5aba BM |
395 | { |
396 | s->init_num = 0; | |
45206340 | 397 | skip_message = 1; |
a661b653 BM |
398 | |
399 | if (s->msg_callback) | |
400 | s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, p, 4, s, s->msg_callback_arg); | |
3b0b5aba | 401 | } |
d02b48c6 | 402 | } |
45206340 | 403 | while (skip_message); |
d02b48c6 | 404 | |
745c70e5 BM |
405 | /* s->init_num == 4 */ |
406 | ||
d02b48c6 RE |
407 | if ((mt >= 0) && (*p != mt)) |
408 | { | |
58964a49 | 409 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
410 | SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE); |
411 | goto f_err; | |
412 | } | |
a2a01589 | 413 | if ((mt < 0) && (*p == SSL3_MT_CLIENT_HELLO) && |
3d14b9d0 DSH |
414 | (st1 == SSL3_ST_SR_CERT_A) && |
415 | (stn == SSL3_ST_SR_CERT_B)) | |
416 | { | |
417 | /* At this point we have got an MS SGC second client | |
745c70e5 BM |
418 | * hello (maybe we should always allow the client to |
419 | * start a new handshake?). We need to restart the mac. | |
a2a01589 BM |
420 | * Don't increment {num,total}_renegotiations because |
421 | * we have not completed the handshake. */ | |
3d14b9d0 | 422 | ssl3_init_finished_mac(s); |
3d14b9d0 | 423 | } |
745c70e5 | 424 | |
d02b48c6 RE |
425 | s->s3->tmp.message_type= *(p++); |
426 | ||
427 | n2l3(p,l); | |
428 | if (l > (unsigned long)max) | |
429 | { | |
58964a49 | 430 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
431 | SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); |
432 | goto f_err; | |
433 | } | |
48948d53 BM |
434 | if (l > (INT_MAX-4)) /* BUF_MEM_grow takes an 'int' parameter */ |
435 | { | |
436 | al=SSL_AD_ILLEGAL_PARAMETER; | |
437 | SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE); | |
438 | goto f_err; | |
439 | } | |
54a656ef | 440 | if (l && !BUF_MEM_grow_clean(s->init_buf,(int)l+4)) |
d02b48c6 RE |
441 | { |
442 | SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB); | |
443 | goto err; | |
444 | } | |
445 | s->s3->tmp.message_size=l; | |
446 | s->state=stn; | |
447 | ||
48948d53 BM |
448 | s->init_msg = s->init_buf->data + 4; |
449 | s->init_num = 0; | |
d02b48c6 RE |
450 | } |
451 | ||
452 | /* next state (stn) */ | |
48948d53 BM |
453 | p = s->init_msg; |
454 | n = s->s3->tmp.message_size - s->init_num; | |
b35e9050 | 455 | while (n > 0) |
d02b48c6 | 456 | { |
36d16f8e | 457 | i=s->method->ssl_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n,0); |
b35e9050 | 458 | if (i <= 0) |
d02b48c6 | 459 | { |
b35e9050 BM |
460 | s->rwstate=SSL_READING; |
461 | *ok = 0; | |
462 | return i; | |
d02b48c6 | 463 | } |
b35e9050 BM |
464 | s->init_num += i; |
465 | n -= i; | |
d02b48c6 | 466 | } |
ee2ffc27 | 467 | |
bf48836c | 468 | #ifndef OPENSSL_NO_NEXTPROTONEG |
ee2ffc27 BL |
469 | /* If receiving Finished, record MAC of prior handshake messages for |
470 | * Finished verification. */ | |
471 | if (*s->init_buf->data == SSL3_MT_FINISHED) | |
472 | ssl3_take_mac(s); | |
473 | #endif | |
474 | ||
475 | /* Feed this message into MAC computation. */ | |
48948d53 | 476 | ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4); |
a661b653 BM |
477 | if (s->msg_callback) |
478 | s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg); | |
d02b48c6 | 479 | *ok=1; |
b35e9050 | 480 | return s->init_num; |
d02b48c6 RE |
481 | f_err: |
482 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
483 | err: | |
484 | *ok=0; | |
485 | return(-1); | |
486 | } | |
487 | ||
6b691a5c | 488 | int ssl_cert_type(X509 *x, EVP_PKEY *pkey) |
d02b48c6 RE |
489 | { |
490 | EVP_PKEY *pk; | |
6049399b | 491 | int ret= -1,i; |
d02b48c6 RE |
492 | |
493 | if (pkey == NULL) | |
494 | pk=X509_get_pubkey(x); | |
495 | else | |
496 | pk=pkey; | |
497 | if (pk == NULL) goto err; | |
498 | ||
499 | i=pk->type; | |
500 | if (i == EVP_PKEY_RSA) | |
501 | { | |
502 | ret=SSL_PKEY_RSA_ENC; | |
d02b48c6 RE |
503 | } |
504 | else if (i == EVP_PKEY_DSA) | |
505 | { | |
506 | ret=SSL_PKEY_DSA_SIGN; | |
507 | } | |
ea262260 | 508 | #ifndef OPENSSL_NO_EC |
5488bb61 | 509 | else if (i == EVP_PKEY_EC) |
ea262260 BM |
510 | { |
511 | ret = SSL_PKEY_ECC; | |
81025661 | 512 | } |
ea262260 | 513 | #endif |
81025661 DSH |
514 | else if (i == NID_id_GostR3410_94 || i == NID_id_GostR3410_94_cc) |
515 | { | |
516 | ret = SSL_PKEY_GOST94; | |
517 | } | |
518 | else if (i == NID_id_GostR3410_2001 || i == NID_id_GostR3410_2001_cc) | |
519 | { | |
520 | ret = SSL_PKEY_GOST01; | |
521 | } | |
b2141841 | 522 | else if (x && (i == EVP_PKEY_DH || i == EVP_PKEY_DHX)) |
8e1dc4d7 DSH |
523 | { |
524 | /* For DH two cases: DH certificate signed with RSA and | |
525 | * DH certificate signed with DSA. | |
526 | */ | |
527 | i = X509_certificate_type(x, pk); | |
528 | if (i & EVP_PKS_RSA) | |
529 | ret = SSL_PKEY_DH_RSA; | |
530 | else if (i & EVP_PKS_DSA) | |
531 | ret = SSL_PKEY_DH_DSA; | |
532 | } | |
533 | ||
d02b48c6 | 534 | err: |
a8236c8c | 535 | if(!pkey) EVP_PKEY_free(pk); |
d02b48c6 RE |
536 | return(ret); |
537 | } | |
538 | ||
6b691a5c | 539 | int ssl_verify_alarm_type(long type) |
d02b48c6 RE |
540 | { |
541 | int al; | |
542 | ||
543 | switch(type) | |
544 | { | |
545 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
58964a49 | 546 | case X509_V_ERR_UNABLE_TO_GET_CRL: |
b545dc67 | 547 | case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: |
58964a49 RE |
548 | al=SSL_AD_UNKNOWN_CA; |
549 | break; | |
d02b48c6 | 550 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: |
58964a49 | 551 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: |
d02b48c6 | 552 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: |
d02b48c6 RE |
553 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: |
554 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
58964a49 RE |
555 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: |
556 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: | |
557 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
558 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
11c26ecf LJ |
559 | case X509_V_ERR_CERT_UNTRUSTED: |
560 | case X509_V_ERR_CERT_REJECTED: | |
58964a49 RE |
561 | al=SSL_AD_BAD_CERTIFICATE; |
562 | break; | |
563 | case X509_V_ERR_CERT_SIGNATURE_FAILURE: | |
564 | case X509_V_ERR_CRL_SIGNATURE_FAILURE: | |
565 | al=SSL_AD_DECRYPT_ERROR; | |
566 | break; | |
567 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
568 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
569 | al=SSL_AD_CERTIFICATE_EXPIRED; | |
570 | break; | |
571 | case X509_V_ERR_CERT_REVOKED: | |
572 | al=SSL_AD_CERTIFICATE_REVOKED; | |
573 | break; | |
574 | case X509_V_ERR_OUT_OF_MEM: | |
575 | al=SSL_AD_INTERNAL_ERROR; | |
576 | break; | |
d02b48c6 RE |
577 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: |
578 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: | |
579 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: | |
580 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: | |
58964a49 | 581 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: |
11c26ecf LJ |
582 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: |
583 | case X509_V_ERR_INVALID_CA: | |
58964a49 | 584 | al=SSL_AD_UNKNOWN_CA; |
d02b48c6 | 585 | break; |
58964a49 RE |
586 | case X509_V_ERR_APPLICATION_VERIFICATION: |
587 | al=SSL_AD_HANDSHAKE_FAILURE; | |
d02b48c6 | 588 | break; |
11c26ecf LJ |
589 | case X509_V_ERR_INVALID_PURPOSE: |
590 | al=SSL_AD_UNSUPPORTED_CERTIFICATE; | |
591 | break; | |
d02b48c6 | 592 | default: |
58964a49 | 593 | al=SSL_AD_CERTIFICATE_UNKNOWN; |
d02b48c6 RE |
594 | break; |
595 | } | |
596 | return(al); | |
597 | } | |
598 | ||
474b3b1c | 599 | #ifndef OPENSSL_NO_BUF_FREELISTS |
8671b898 BL |
600 | /* On some platforms, malloc() performance is bad enough that you can't just |
601 | * free() and malloc() buffers all the time, so we need to use freelists from | |
602 | * unused buffers. Currently, each freelist holds memory chunks of only a | |
603 | * given size (list->chunklen); other sized chunks are freed and malloced. | |
604 | * This doesn't help much if you're using many different SSL option settings | |
605 | * with a given context. (The options affecting buffer size are | |
606 | * max_send_fragment, read buffer vs write buffer, | |
607 | * SSL_OP_MICROSOFT_BIG_WRITE_BUFFER, SSL_OP_NO_COMPRESSION, and | |
608 | * SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS.) Using a separate freelist for every | |
609 | * possible size is not an option, since max_send_fragment can take on many | |
610 | * different values. | |
611 | * | |
612 | * If you are on a platform with a slow malloc(), and you're using SSL | |
613 | * connections with many different settings for these options, and you need to | |
614 | * use the SSL_MOD_RELEASE_BUFFERS feature, you have a few options: | |
615 | * - Link against a faster malloc implementation. | |
616 | * - Use a separate SSL_CTX for each option set. | |
617 | * - Improve this code. | |
618 | */ | |
619 | static void * | |
620 | freelist_extract(SSL_CTX *ctx, int for_read, int sz) | |
621 | { | |
622 | SSL3_BUF_FREELIST *list; | |
623 | SSL3_BUF_FREELIST_ENTRY *ent = NULL; | |
624 | void *result = NULL; | |
625 | ||
626 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
627 | list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist; | |
99649b59 | 628 | if (list != NULL && sz == (int)list->chunklen) |
8671b898 BL |
629 | ent = list->head; |
630 | if (ent != NULL) | |
631 | { | |
632 | list->head = ent->next; | |
633 | result = ent; | |
634 | if (--list->len == 0) | |
635 | list->chunklen = 0; | |
636 | } | |
637 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
638 | if (!result) | |
639 | result = OPENSSL_malloc(sz); | |
640 | return result; | |
641 | } | |
642 | ||
643 | static void | |
644 | freelist_insert(SSL_CTX *ctx, int for_read, size_t sz, void *mem) | |
645 | { | |
646 | SSL3_BUF_FREELIST *list; | |
647 | SSL3_BUF_FREELIST_ENTRY *ent; | |
648 | ||
649 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
650 | list = for_read ? ctx->rbuf_freelist : ctx->wbuf_freelist; | |
651 | if (list != NULL && | |
652 | (sz == list->chunklen || list->chunklen == 0) && | |
653 | list->len < ctx->freelist_max_len && | |
654 | sz >= sizeof(*ent)) | |
655 | { | |
656 | list->chunklen = sz; | |
657 | ent = mem; | |
658 | ent->next = list->head; | |
659 | list->head = ent; | |
660 | ++list->len; | |
661 | mem = NULL; | |
662 | } | |
663 | ||
664 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
665 | if (mem) | |
666 | OPENSSL_free(mem); | |
667 | } | |
668 | #else | |
669 | #define freelist_extract(c,fr,sz) OPENSSL_malloc(sz) | |
670 | #define freelist_insert(c,fr,sz,m) OPENSSL_free(m) | |
671 | #endif | |
672 | ||
673 | int ssl3_setup_read_buffer(SSL *s) | |
d02b48c6 RE |
674 | { |
675 | unsigned char *p; | |
70dc09eb DSH |
676 | size_t len,align=0,headerlen; |
677 | ||
678 | if (SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) | |
679 | headerlen = DTLS1_RT_HEADER_LENGTH; | |
680 | else | |
681 | headerlen = SSL3_RT_HEADER_LENGTH; | |
a4d64c7f AP |
682 | |
683 | #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 | |
684 | align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1); | |
685 | #endif | |
d02b48c6 RE |
686 | |
687 | if (s->s3->rbuf.buf == NULL) | |
688 | { | |
566dda07 DSH |
689 | len = SSL3_RT_MAX_PLAIN_LENGTH |
690 | + SSL3_RT_MAX_ENCRYPTED_OVERHEAD | |
70dc09eb | 691 | + headerlen + align; |
58964a49 | 692 | if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER) |
566dda07 DSH |
693 | { |
694 | s->s3->init_extra = 1; | |
695 | len += SSL3_RT_MAX_EXTRA; | |
696 | } | |
697 | #ifndef OPENSSL_NO_COMP | |
698 | if (!(s->options & SSL_OP_NO_COMPRESSION)) | |
699 | len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; | |
700 | #endif | |
8671b898 | 701 | if ((p=freelist_extract(s->ctx, 1, len)) == NULL) |
d02b48c6 | 702 | goto err; |
82b0bf0b BM |
703 | s->s3->rbuf.buf = p; |
704 | s->s3->rbuf.len = len; | |
d02b48c6 RE |
705 | } |
706 | ||
8671b898 BL |
707 | s->packet= &(s->s3->rbuf.buf[0]); |
708 | return 1; | |
709 | ||
710 | err: | |
474b3b1c | 711 | SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER,ERR_R_MALLOC_FAILURE); |
8671b898 BL |
712 | return 0; |
713 | } | |
714 | ||
715 | int ssl3_setup_write_buffer(SSL *s) | |
716 | { | |
717 | unsigned char *p; | |
70dc09eb DSH |
718 | size_t len,align=0,headerlen; |
719 | ||
720 | if (SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) | |
721 | headerlen = DTLS1_RT_HEADER_LENGTH + 1; | |
722 | else | |
723 | headerlen = SSL3_RT_HEADER_LENGTH; | |
8671b898 BL |
724 | |
725 | #if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0 | |
726 | align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1); | |
727 | #endif | |
728 | ||
d02b48c6 RE |
729 | if (s->s3->wbuf.buf == NULL) |
730 | { | |
566dda07 DSH |
731 | len = s->max_send_fragment |
732 | + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD | |
70dc09eb | 733 | + headerlen + align; |
566dda07 DSH |
734 | #ifndef OPENSSL_NO_COMP |
735 | if (!(s->options & SSL_OP_NO_COMPRESSION)) | |
736 | len += SSL3_RT_MAX_COMPRESSED_OVERHEAD; | |
737 | #endif | |
738 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) | |
70dc09eb | 739 | len += headerlen + align |
566dda07 | 740 | + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD; |
8671b898 BL |
741 | |
742 | if ((p=freelist_extract(s->ctx, 0, len)) == NULL) | |
d02b48c6 | 743 | goto err; |
82b0bf0b BM |
744 | s->s3->wbuf.buf = p; |
745 | s->s3->wbuf.len = len; | |
d02b48c6 | 746 | } |
8671b898 BL |
747 | |
748 | return 1; | |
749 | ||
d02b48c6 | 750 | err: |
474b3b1c | 751 | SSLerr(SSL_F_SSL3_SETUP_WRITE_BUFFER,ERR_R_MALLOC_FAILURE); |
8671b898 BL |
752 | return 0; |
753 | } | |
754 | ||
755 | ||
756 | int ssl3_setup_buffers(SSL *s) | |
757 | { | |
758 | if (!ssl3_setup_read_buffer(s)) | |
759 | return 0; | |
760 | if (!ssl3_setup_write_buffer(s)) | |
761 | return 0; | |
762 | return 1; | |
763 | } | |
764 | ||
765 | int ssl3_release_write_buffer(SSL *s) | |
766 | { | |
767 | if (s->s3->wbuf.buf != NULL) | |
768 | { | |
769 | freelist_insert(s->ctx, 0, s->s3->wbuf.len, s->s3->wbuf.buf); | |
770 | s->s3->wbuf.buf = NULL; | |
771 | } | |
772 | return 1; | |
d02b48c6 | 773 | } |
8671b898 BL |
774 | |
775 | int ssl3_release_read_buffer(SSL *s) | |
776 | { | |
777 | if (s->s3->rbuf.buf != NULL) | |
778 | { | |
779 | freelist_insert(s->ctx, 1, s->s3->rbuf.len, s->s3->rbuf.buf); | |
780 | s->s3->rbuf.buf = NULL; | |
781 | } | |
782 | return 1; | |
783 | } | |
784 |