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-rw-r--r--src/lib/libssl/d1_srvr.c540
1 files changed, 472 insertions, 68 deletions
diff --git a/src/lib/libssl/d1_srvr.c b/src/lib/libssl/d1_srvr.c
index 0bbf8ae7f3..301ceda7a5 100644
--- a/src/lib/libssl/d1_srvr.c
+++ b/src/lib/libssl/d1_srvr.c
@@ -4,7 +4,7 @@
4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. 4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5 */ 5 */
6/* ==================================================================== 6/* ====================================================================
7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 7 * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
8 * 8 *
9 * Redistribution and use in source and binary forms, with or without 9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions 10 * modification, are permitted provided that the following conditions
@@ -121,14 +121,15 @@
121#include <openssl/evp.h> 121#include <openssl/evp.h>
122#include <openssl/x509.h> 122#include <openssl/x509.h>
123#include <openssl/md5.h> 123#include <openssl/md5.h>
124#include <openssl/bn.h>
124#ifndef OPENSSL_NO_DH 125#ifndef OPENSSL_NO_DH
125#include <openssl/dh.h> 126#include <openssl/dh.h>
126#endif 127#endif
127 128
128static SSL_METHOD *dtls1_get_server_method(int ver); 129static const SSL_METHOD *dtls1_get_server_method(int ver);
129static int dtls1_send_hello_verify_request(SSL *s); 130static int dtls1_send_hello_verify_request(SSL *s);
130 131
131static SSL_METHOD *dtls1_get_server_method(int ver) 132static const SSL_METHOD *dtls1_get_server_method(int ver)
132 { 133 {
133 if (ver == DTLS1_VERSION) 134 if (ver == DTLS1_VERSION)
134 return(DTLSv1_server_method()); 135 return(DTLSv1_server_method());
@@ -144,9 +145,9 @@ IMPLEMENT_dtls1_meth_func(DTLSv1_server_method,
144int dtls1_accept(SSL *s) 145int dtls1_accept(SSL *s)
145 { 146 {
146 BUF_MEM *buf; 147 BUF_MEM *buf;
147 unsigned long l,Time=(unsigned long)time(NULL); 148 unsigned long Time=(unsigned long)time(NULL);
148 void (*cb)(const SSL *ssl,int type,int val)=NULL; 149 void (*cb)(const SSL *ssl,int type,int val)=NULL;
149 long num1; 150 unsigned long alg_k;
150 int ret= -1; 151 int ret= -1;
151 int new_state,state,skip=0; 152 int new_state,state,skip=0;
152 153
@@ -236,17 +237,13 @@ int dtls1_accept(SSL *s)
236 s->state=SSL3_ST_SW_HELLO_REQ_A; 237 s->state=SSL3_ST_SW_HELLO_REQ_A;
237 } 238 }
238 239
239 if ( (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE))
240 s->d1->send_cookie = 1;
241 else
242 s->d1->send_cookie = 0;
243
244 break; 240 break;
245 241
246 case SSL3_ST_SW_HELLO_REQ_A: 242 case SSL3_ST_SW_HELLO_REQ_A:
247 case SSL3_ST_SW_HELLO_REQ_B: 243 case SSL3_ST_SW_HELLO_REQ_B:
248 244
249 s->shutdown=0; 245 s->shutdown=0;
246 dtls1_start_timer(s);
250 ret=dtls1_send_hello_request(s); 247 ret=dtls1_send_hello_request(s);
251 if (ret <= 0) goto end; 248 if (ret <= 0) goto end;
252 s->s3->tmp.next_state=SSL3_ST_SW_HELLO_REQ_C; 249 s->s3->tmp.next_state=SSL3_ST_SW_HELLO_REQ_C;
@@ -267,37 +264,58 @@ int dtls1_accept(SSL *s)
267 s->shutdown=0; 264 s->shutdown=0;
268 ret=ssl3_get_client_hello(s); 265 ret=ssl3_get_client_hello(s);
269 if (ret <= 0) goto end; 266 if (ret <= 0) goto end;
270 s->new_session = 2; 267 dtls1_stop_timer(s);
271 268
272 if ( s->d1->send_cookie) 269 if (ret == 1 && (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE))
273 s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A; 270 s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A;
274 else 271 else
275 s->state = SSL3_ST_SW_SRVR_HELLO_A; 272 s->state = SSL3_ST_SW_SRVR_HELLO_A;
276 273
277 s->init_num=0; 274 s->init_num=0;
275
276 /* If we're just listening, stop here */
277 if (s->d1->listen && s->state == SSL3_ST_SW_SRVR_HELLO_A)
278 {
279 ret = 2;
280 s->d1->listen = 0;
281 goto end;
282 }
283
278 break; 284 break;
279 285
280 case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A: 286 case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A:
281 case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B: 287 case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B:
282 288
289 dtls1_start_timer(s);
283 ret = dtls1_send_hello_verify_request(s); 290 ret = dtls1_send_hello_verify_request(s);
284 if ( ret <= 0) goto end; 291 if ( ret <= 0) goto end;
285 s->d1->send_cookie = 0;
286 s->state=SSL3_ST_SW_FLUSH; 292 s->state=SSL3_ST_SW_FLUSH;
287 s->s3->tmp.next_state=SSL3_ST_SR_CLNT_HELLO_A; 293 s->s3->tmp.next_state=SSL3_ST_SR_CLNT_HELLO_A;
288 294
289 /* HelloVerifyRequests resets Finished MAC */ 295 /* HelloVerifyRequest resets Finished MAC */
290 if (s->client_version != DTLS1_BAD_VER) 296 if (s->version != DTLS1_BAD_VER)
291 ssl3_init_finished_mac(s); 297 ssl3_init_finished_mac(s);
292 break; 298 break;
293 299
294 case SSL3_ST_SW_SRVR_HELLO_A: 300 case SSL3_ST_SW_SRVR_HELLO_A:
295 case SSL3_ST_SW_SRVR_HELLO_B: 301 case SSL3_ST_SW_SRVR_HELLO_B:
302 s->new_session = 2;
303 dtls1_start_timer(s);
296 ret=dtls1_send_server_hello(s); 304 ret=dtls1_send_server_hello(s);
297 if (ret <= 0) goto end; 305 if (ret <= 0) goto end;
298 306
307#ifndef OPENSSL_NO_TLSEXT
299 if (s->hit) 308 if (s->hit)
300 s->state=SSL3_ST_SW_CHANGE_A; 309 {
310 if (s->tlsext_ticket_expected)
311 s->state=SSL3_ST_SW_SESSION_TICKET_A;
312 else
313 s->state=SSL3_ST_SW_CHANGE_A;
314 }
315#else
316 if (s->hit)
317 s->state=SSL3_ST_SW_CHANGE_A;
318#endif
301 else 319 else
302 s->state=SSL3_ST_SW_CERT_A; 320 s->state=SSL3_ST_SW_CERT_A;
303 s->init_num=0; 321 s->init_num=0;
@@ -305,27 +323,43 @@ int dtls1_accept(SSL *s)
305 323
306 case SSL3_ST_SW_CERT_A: 324 case SSL3_ST_SW_CERT_A:
307 case SSL3_ST_SW_CERT_B: 325 case SSL3_ST_SW_CERT_B:
308 /* Check if it is anon DH */ 326 /* Check if it is anon DH or normal PSK */
309 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) 327 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
328 && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
310 { 329 {
330 dtls1_start_timer(s);
311 ret=dtls1_send_server_certificate(s); 331 ret=dtls1_send_server_certificate(s);
312 if (ret <= 0) goto end; 332 if (ret <= 0) goto end;
333#ifndef OPENSSL_NO_TLSEXT
334 if (s->tlsext_status_expected)
335 s->state=SSL3_ST_SW_CERT_STATUS_A;
336 else
337 s->state=SSL3_ST_SW_KEY_EXCH_A;
338 }
339 else
340 {
341 skip = 1;
342 s->state=SSL3_ST_SW_KEY_EXCH_A;
343 }
344#else
313 } 345 }
314 else 346 else
315 skip=1; 347 skip=1;
348
316 s->state=SSL3_ST_SW_KEY_EXCH_A; 349 s->state=SSL3_ST_SW_KEY_EXCH_A;
350#endif
317 s->init_num=0; 351 s->init_num=0;
318 break; 352 break;
319 353
320 case SSL3_ST_SW_KEY_EXCH_A: 354 case SSL3_ST_SW_KEY_EXCH_A:
321 case SSL3_ST_SW_KEY_EXCH_B: 355 case SSL3_ST_SW_KEY_EXCH_B:
322 l=s->s3->tmp.new_cipher->algorithms; 356 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
323 357
324 /* clear this, it may get reset by 358 /* clear this, it may get reset by
325 * send_server_key_exchange */ 359 * send_server_key_exchange */
326 if ((s->options & SSL_OP_EPHEMERAL_RSA) 360 if ((s->options & SSL_OP_EPHEMERAL_RSA)
327#ifndef OPENSSL_NO_KRB5 361#ifndef OPENSSL_NO_KRB5
328 && !(l & SSL_KRB5) 362 && !(alg_k & SSL_kKRB5)
329#endif /* OPENSSL_NO_KRB5 */ 363#endif /* OPENSSL_NO_KRB5 */
330 ) 364 )
331 /* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key 365 /* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
@@ -336,11 +370,17 @@ int dtls1_accept(SSL *s)
336 else 370 else
337 s->s3->tmp.use_rsa_tmp=0; 371 s->s3->tmp.use_rsa_tmp=0;
338 372
339 /* only send if a DH key exchange, fortezza or 373 /* only send if a DH key exchange or
340 * RSA but we have a sign only certificate */ 374 * RSA but we have a sign only certificate */
341 if (s->s3->tmp.use_rsa_tmp 375 if (s->s3->tmp.use_rsa_tmp
342 || (l & (SSL_DH|SSL_kFZA)) 376 /* PSK: send ServerKeyExchange if PSK identity
343 || ((l & SSL_kRSA) 377 * hint if provided */
378#ifndef OPENSSL_NO_PSK
379 || ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint)
380#endif
381 || (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
382 || (alg_k & SSL_kEECDH)
383 || ((alg_k & SSL_kRSA)
344 && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL 384 && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
345 || (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) 385 || (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)
346 && EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher) 386 && EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)
@@ -349,6 +389,7 @@ int dtls1_accept(SSL *s)
349 ) 389 )
350 ) 390 )
351 { 391 {
392 dtls1_start_timer(s);
352 ret=dtls1_send_server_key_exchange(s); 393 ret=dtls1_send_server_key_exchange(s);
353 if (ret <= 0) goto end; 394 if (ret <= 0) goto end;
354 } 395 }
@@ -370,12 +411,15 @@ int dtls1_accept(SSL *s)
370 /* never request cert in anonymous ciphersuites 411 /* never request cert in anonymous ciphersuites
371 * (see section "Certificate request" in SSL 3 drafts 412 * (see section "Certificate request" in SSL 3 drafts
372 * and in RFC 2246): */ 413 * and in RFC 2246): */
373 ((s->s3->tmp.new_cipher->algorithms & SSL_aNULL) && 414 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
374 /* ... except when the application insists on verification 415 /* ... except when the application insists on verification
375 * (against the specs, but s3_clnt.c accepts this for SSL 3) */ 416 * (against the specs, but s3_clnt.c accepts this for SSL 3) */
376 !(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) || 417 !(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) ||
377 /* never request cert in Kerberos ciphersuites */ 418 /* never request cert in Kerberos ciphersuites */
378 (s->s3->tmp.new_cipher->algorithms & SSL_aKRB5)) 419 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)
420 /* With normal PSK Certificates and
421 * Certificate Requests are omitted */
422 || (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
379 { 423 {
380 /* no cert request */ 424 /* no cert request */
381 skip=1; 425 skip=1;
@@ -385,6 +429,7 @@ int dtls1_accept(SSL *s)
385 else 429 else
386 { 430 {
387 s->s3->tmp.cert_request=1; 431 s->s3->tmp.cert_request=1;
432 dtls1_start_timer(s);
388 ret=dtls1_send_certificate_request(s); 433 ret=dtls1_send_certificate_request(s);
389 if (ret <= 0) goto end; 434 if (ret <= 0) goto end;
390#ifndef NETSCAPE_HANG_BUG 435#ifndef NETSCAPE_HANG_BUG
@@ -399,6 +444,7 @@ int dtls1_accept(SSL *s)
399 444
400 case SSL3_ST_SW_SRVR_DONE_A: 445 case SSL3_ST_SW_SRVR_DONE_A:
401 case SSL3_ST_SW_SRVR_DONE_B: 446 case SSL3_ST_SW_SRVR_DONE_B:
447 dtls1_start_timer(s);
402 ret=dtls1_send_server_done(s); 448 ret=dtls1_send_server_done(s);
403 if (ret <= 0) goto end; 449 if (ret <= 0) goto end;
404 s->s3->tmp.next_state=SSL3_ST_SR_CERT_A; 450 s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
@@ -407,16 +453,13 @@ int dtls1_accept(SSL *s)
407 break; 453 break;
408 454
409 case SSL3_ST_SW_FLUSH: 455 case SSL3_ST_SW_FLUSH:
410 /* number of bytes to be flushed */ 456 s->rwstate=SSL_WRITING;
411 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); 457 if (BIO_flush(s->wbio) <= 0)
412 if (num1 > 0)
413 { 458 {
414 s->rwstate=SSL_WRITING; 459 ret= -1;
415 num1=BIO_flush(s->wbio); 460 goto end;
416 if (num1 <= 0) { ret= -1; goto end; }
417 s->rwstate=SSL_NOTHING;
418 } 461 }
419 462 s->rwstate=SSL_NOTHING;
420 s->state=s->s3->tmp.next_state; 463 s->state=s->s3->tmp.next_state;
421 break; 464 break;
422 465
@@ -426,6 +469,7 @@ int dtls1_accept(SSL *s)
426 ret = ssl3_check_client_hello(s); 469 ret = ssl3_check_client_hello(s);
427 if (ret <= 0) 470 if (ret <= 0)
428 goto end; 471 goto end;
472 dtls1_stop_timer(s);
429 if (ret == 2) 473 if (ret == 2)
430 s->state = SSL3_ST_SR_CLNT_HELLO_C; 474 s->state = SSL3_ST_SR_CLNT_HELLO_C;
431 else { 475 else {
@@ -433,6 +477,7 @@ int dtls1_accept(SSL *s)
433 * have not asked for it :-) */ 477 * have not asked for it :-) */
434 ret=ssl3_get_client_certificate(s); 478 ret=ssl3_get_client_certificate(s);
435 if (ret <= 0) goto end; 479 if (ret <= 0) goto end;
480 dtls1_stop_timer(s);
436 s->init_num=0; 481 s->init_num=0;
437 s->state=SSL3_ST_SR_KEY_EXCH_A; 482 s->state=SSL3_ST_SR_KEY_EXCH_A;
438 } 483 }
@@ -442,26 +487,44 @@ int dtls1_accept(SSL *s)
442 case SSL3_ST_SR_KEY_EXCH_B: 487 case SSL3_ST_SR_KEY_EXCH_B:
443 ret=ssl3_get_client_key_exchange(s); 488 ret=ssl3_get_client_key_exchange(s);
444 if (ret <= 0) goto end; 489 if (ret <= 0) goto end;
490 dtls1_stop_timer(s);
445 s->state=SSL3_ST_SR_CERT_VRFY_A; 491 s->state=SSL3_ST_SR_CERT_VRFY_A;
446 s->init_num=0; 492 s->init_num=0;
447 493
448 /* We need to get hashes here so if there is 494 if (ret == 2)
449 * a client cert, it can be verified */ 495 {
450 s->method->ssl3_enc->cert_verify_mac(s, 496 /* For the ECDH ciphersuites when
451 &(s->s3->finish_dgst1), 497 * the client sends its ECDH pub key in
452 &(s->s3->tmp.cert_verify_md[0])); 498 * a certificate, the CertificateVerify
453 s->method->ssl3_enc->cert_verify_mac(s, 499 * message is not sent.
454 &(s->s3->finish_dgst2), 500 */
455 &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH])); 501 s->state=SSL3_ST_SR_FINISHED_A;
502 s->init_num = 0;
503 }
504 else
505 {
506 s->state=SSL3_ST_SR_CERT_VRFY_A;
507 s->init_num=0;
456 508
509 /* We need to get hashes here so if there is
510 * a client cert, it can be verified */
511 s->method->ssl3_enc->cert_verify_mac(s,
512 NID_md5,
513 &(s->s3->tmp.cert_verify_md[0]));
514 s->method->ssl3_enc->cert_verify_mac(s,
515 NID_sha1,
516 &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
517 }
457 break; 518 break;
458 519
459 case SSL3_ST_SR_CERT_VRFY_A: 520 case SSL3_ST_SR_CERT_VRFY_A:
460 case SSL3_ST_SR_CERT_VRFY_B: 521 case SSL3_ST_SR_CERT_VRFY_B:
461 522
523 s->d1->change_cipher_spec_ok = 1;
462 /* we should decide if we expected this one */ 524 /* we should decide if we expected this one */
463 ret=ssl3_get_cert_verify(s); 525 ret=ssl3_get_cert_verify(s);
464 if (ret <= 0) goto end; 526 if (ret <= 0) goto end;
527 dtls1_stop_timer(s);
465 528
466 s->state=SSL3_ST_SR_FINISHED_A; 529 s->state=SSL3_ST_SR_FINISHED_A;
467 s->init_num=0; 530 s->init_num=0;
@@ -469,16 +532,41 @@ int dtls1_accept(SSL *s)
469 532
470 case SSL3_ST_SR_FINISHED_A: 533 case SSL3_ST_SR_FINISHED_A:
471 case SSL3_ST_SR_FINISHED_B: 534 case SSL3_ST_SR_FINISHED_B:
535 s->d1->change_cipher_spec_ok = 1;
472 ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A, 536 ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A,
473 SSL3_ST_SR_FINISHED_B); 537 SSL3_ST_SR_FINISHED_B);
474 if (ret <= 0) goto end; 538 if (ret <= 0) goto end;
539 dtls1_stop_timer(s);
475 if (s->hit) 540 if (s->hit)
476 s->state=SSL_ST_OK; 541 s->state=SSL_ST_OK;
542#ifndef OPENSSL_NO_TLSEXT
543 else if (s->tlsext_ticket_expected)
544 s->state=SSL3_ST_SW_SESSION_TICKET_A;
545#endif
477 else 546 else
478 s->state=SSL3_ST_SW_CHANGE_A; 547 s->state=SSL3_ST_SW_CHANGE_A;
479 s->init_num=0; 548 s->init_num=0;
480 break; 549 break;
481 550
551#ifndef OPENSSL_NO_TLSEXT
552 case SSL3_ST_SW_SESSION_TICKET_A:
553 case SSL3_ST_SW_SESSION_TICKET_B:
554 ret=dtls1_send_newsession_ticket(s);
555 if (ret <= 0) goto end;
556 s->state=SSL3_ST_SW_CHANGE_A;
557 s->init_num=0;
558 break;
559
560 case SSL3_ST_SW_CERT_STATUS_A:
561 case SSL3_ST_SW_CERT_STATUS_B:
562 ret=ssl3_send_cert_status(s);
563 if (ret <= 0) goto end;
564 s->state=SSL3_ST_SW_KEY_EXCH_A;
565 s->init_num=0;
566 break;
567
568#endif
569
482 case SSL3_ST_SW_CHANGE_A: 570 case SSL3_ST_SW_CHANGE_A:
483 case SSL3_ST_SW_CHANGE_B: 571 case SSL3_ST_SW_CHANGE_B:
484 572
@@ -554,6 +642,7 @@ int dtls1_accept(SSL *s)
554 s->d1->handshake_read_seq = 0; 642 s->d1->handshake_read_seq = 0;
555 /* next message is server hello */ 643 /* next message is server hello */
556 s->d1->handshake_write_seq = 0; 644 s->d1->handshake_write_seq = 0;
645 s->d1->next_handshake_write_seq = 0;
557 goto end; 646 goto end;
558 /* break; */ 647 /* break; */
559 648
@@ -624,22 +713,16 @@ int dtls1_send_hello_verify_request(SSL *s)
624 buf = (unsigned char *)s->init_buf->data; 713 buf = (unsigned char *)s->init_buf->data;
625 714
626 msg = p = &(buf[DTLS1_HM_HEADER_LENGTH]); 715 msg = p = &(buf[DTLS1_HM_HEADER_LENGTH]);
627 if (s->client_version == DTLS1_BAD_VER) 716 *(p++) = s->version >> 8;
628 *(p++) = DTLS1_BAD_VER>>8, 717 *(p++) = s->version & 0xFF;
629 *(p++) = DTLS1_BAD_VER&0xff;
630 else
631 *(p++) = s->version >> 8,
632 *(p++) = s->version & 0xFF;
633 718
634 if (s->ctx->app_gen_cookie_cb != NULL && 719 if (s->ctx->app_gen_cookie_cb == NULL ||
635 s->ctx->app_gen_cookie_cb(s, s->d1->cookie, 720 s->ctx->app_gen_cookie_cb(s, s->d1->cookie,
636 &(s->d1->cookie_len)) == 0) 721 &(s->d1->cookie_len)) == 0)
637 { 722 {
638 SSLerr(SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST,ERR_R_INTERNAL_ERROR); 723 SSLerr(SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST,ERR_R_INTERNAL_ERROR);
639 return 0; 724 return 0;
640 } 725 }
641 /* else the cookie is assumed to have
642 * been initialized by the application */
643 726
644 *(p++) = (unsigned char) s->d1->cookie_len; 727 *(p++) = (unsigned char) s->d1->cookie_len;
645 memcpy(p, s->d1->cookie, s->d1->cookie_len); 728 memcpy(p, s->d1->cookie, s->d1->cookie_len);
@@ -680,12 +763,8 @@ int dtls1_send_server_hello(SSL *s)
680 /* Do the message type and length last */ 763 /* Do the message type and length last */
681 d=p= &(buf[DTLS1_HM_HEADER_LENGTH]); 764 d=p= &(buf[DTLS1_HM_HEADER_LENGTH]);
682 765
683 if (s->client_version == DTLS1_BAD_VER) 766 *(p++)=s->version>>8;
684 *(p++)=DTLS1_BAD_VER>>8, 767 *(p++)=s->version&0xff;
685 *(p++)=DTLS1_BAD_VER&0xff;
686 else
687 *(p++)=s->version>>8,
688 *(p++)=s->version&0xff;
689 768
690 /* Random stuff */ 769 /* Random stuff */
691 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE); 770 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
@@ -713,6 +792,8 @@ int dtls1_send_server_hello(SSL *s)
713 p+=sl; 792 p+=sl;
714 793
715 /* put the cipher */ 794 /* put the cipher */
795 if (s->s3->tmp.new_cipher == NULL)
796 return -1;
716 i=ssl3_put_cipher_by_char(s->s3->tmp.new_cipher,p); 797 i=ssl3_put_cipher_by_char(s->s3->tmp.new_cipher,p);
717 p+=i; 798 p+=i;
718 799
@@ -726,6 +807,14 @@ int dtls1_send_server_hello(SSL *s)
726 *(p++)=s->s3->tmp.new_compression->id; 807 *(p++)=s->s3->tmp.new_compression->id;
727#endif 808#endif
728 809
810#ifndef OPENSSL_NO_TLSEXT
811 if ((p = ssl_add_serverhello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
812 {
813 SSLerr(SSL_F_DTLS1_SEND_SERVER_HELLO,ERR_R_INTERNAL_ERROR);
814 return -1;
815 }
816#endif
817
729 /* do the header */ 818 /* do the header */
730 l=(p-d); 819 l=(p-d);
731 d=buf; 820 d=buf;
@@ -781,6 +870,13 @@ int dtls1_send_server_key_exchange(SSL *s)
781#ifndef OPENSSL_NO_DH 870#ifndef OPENSSL_NO_DH
782 DH *dh=NULL,*dhp; 871 DH *dh=NULL,*dhp;
783#endif 872#endif
873#ifndef OPENSSL_NO_ECDH
874 EC_KEY *ecdh=NULL, *ecdhp;
875 unsigned char *encodedPoint = NULL;
876 int encodedlen = 0;
877 int curve_id = 0;
878 BN_CTX *bn_ctx = NULL;
879#endif
784 EVP_PKEY *pkey; 880 EVP_PKEY *pkey;
785 unsigned char *p,*d; 881 unsigned char *p,*d;
786 int al,i; 882 int al,i;
@@ -795,7 +891,7 @@ int dtls1_send_server_key_exchange(SSL *s)
795 EVP_MD_CTX_init(&md_ctx); 891 EVP_MD_CTX_init(&md_ctx);
796 if (s->state == SSL3_ST_SW_KEY_EXCH_A) 892 if (s->state == SSL3_ST_SW_KEY_EXCH_A)
797 { 893 {
798 type=s->s3->tmp.new_cipher->algorithms & SSL_MKEY_MASK; 894 type=s->s3->tmp.new_cipher->algorithm_mkey;
799 cert=s->cert; 895 cert=s->cert;
800 896
801 buf=s->init_buf; 897 buf=s->init_buf;
@@ -889,6 +985,142 @@ int dtls1_send_server_key_exchange(SSL *s)
889 } 985 }
890 else 986 else
891#endif 987#endif
988#ifndef OPENSSL_NO_ECDH
989 if (type & SSL_kEECDH)
990 {
991 const EC_GROUP *group;
992
993 ecdhp=cert->ecdh_tmp;
994 if ((ecdhp == NULL) && (s->cert->ecdh_tmp_cb != NULL))
995 {
996 ecdhp=s->cert->ecdh_tmp_cb(s,
997 SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
998 SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
999 }
1000 if (ecdhp == NULL)
1001 {
1002 al=SSL_AD_HANDSHAKE_FAILURE;
1003 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_ECDH_KEY);
1004 goto f_err;
1005 }
1006
1007 if (s->s3->tmp.ecdh != NULL)
1008 {
1009 EC_KEY_free(s->s3->tmp.ecdh);
1010 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1011 goto err;
1012 }
1013
1014 /* Duplicate the ECDH structure. */
1015 if (ecdhp == NULL)
1016 {
1017 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1018 goto err;
1019 }
1020 if (!EC_KEY_up_ref(ecdhp))
1021 {
1022 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1023 goto err;
1024 }
1025 ecdh = ecdhp;
1026
1027 s->s3->tmp.ecdh=ecdh;
1028 if ((EC_KEY_get0_public_key(ecdh) == NULL) ||
1029 (EC_KEY_get0_private_key(ecdh) == NULL) ||
1030 (s->options & SSL_OP_SINGLE_ECDH_USE))
1031 {
1032 if(!EC_KEY_generate_key(ecdh))
1033 {
1034 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1035 goto err;
1036 }
1037 }
1038
1039 if (((group = EC_KEY_get0_group(ecdh)) == NULL) ||
1040 (EC_KEY_get0_public_key(ecdh) == NULL) ||
1041 (EC_KEY_get0_private_key(ecdh) == NULL))
1042 {
1043 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1044 goto err;
1045 }
1046
1047 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1048 (EC_GROUP_get_degree(group) > 163))
1049 {
1050 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1051 goto err;
1052 }
1053
1054 /* XXX: For now, we only support ephemeral ECDH
1055 * keys over named (not generic) curves. For
1056 * supported named curves, curve_id is non-zero.
1057 */
1058 if ((curve_id =
1059 tls1_ec_nid2curve_id(EC_GROUP_get_curve_name(group)))
1060 == 0)
1061 {
1062 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNSUPPORTED_ELLIPTIC_CURVE);
1063 goto err;
1064 }
1065
1066 /* Encode the public key.
1067 * First check the size of encoding and
1068 * allocate memory accordingly.
1069 */
1070 encodedlen = EC_POINT_point2oct(group,
1071 EC_KEY_get0_public_key(ecdh),
1072 POINT_CONVERSION_UNCOMPRESSED,
1073 NULL, 0, NULL);
1074
1075 encodedPoint = (unsigned char *)
1076 OPENSSL_malloc(encodedlen*sizeof(unsigned char));
1077 bn_ctx = BN_CTX_new();
1078 if ((encodedPoint == NULL) || (bn_ctx == NULL))
1079 {
1080 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1081 goto err;
1082 }
1083
1084
1085 encodedlen = EC_POINT_point2oct(group,
1086 EC_KEY_get0_public_key(ecdh),
1087 POINT_CONVERSION_UNCOMPRESSED,
1088 encodedPoint, encodedlen, bn_ctx);
1089
1090 if (encodedlen == 0)
1091 {
1092 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1093 goto err;
1094 }
1095
1096 BN_CTX_free(bn_ctx); bn_ctx=NULL;
1097
1098 /* XXX: For now, we only support named (not
1099 * generic) curves in ECDH ephemeral key exchanges.
1100 * In this situation, we need four additional bytes
1101 * to encode the entire ServerECDHParams
1102 * structure.
1103 */
1104 n = 4 + encodedlen;
1105
1106 /* We'll generate the serverKeyExchange message
1107 * explicitly so we can set these to NULLs
1108 */
1109 r[0]=NULL;
1110 r[1]=NULL;
1111 r[2]=NULL;
1112 r[3]=NULL;
1113 }
1114 else
1115#endif /* !OPENSSL_NO_ECDH */
1116#ifndef OPENSSL_NO_PSK
1117 if (type & SSL_kPSK)
1118 {
1119 /* reserve size for record length and PSK identity hint*/
1120 n+=2+strlen(s->ctx->psk_identity_hint);
1121 }
1122 else
1123#endif /* !OPENSSL_NO_PSK */
892 { 1124 {
893 al=SSL_AD_HANDSHAKE_FAILURE; 1125 al=SSL_AD_HANDSHAKE_FAILURE;
894 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); 1126 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
@@ -900,7 +1132,8 @@ int dtls1_send_server_key_exchange(SSL *s)
900 n+=2+nr[i]; 1132 n+=2+nr[i];
901 } 1133 }
902 1134
903 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) 1135 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1136 && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
904 { 1137 {
905 if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher)) 1138 if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher))
906 == NULL) 1139 == NULL)
@@ -931,6 +1164,41 @@ int dtls1_send_server_key_exchange(SSL *s)
931 p+=nr[i]; 1164 p+=nr[i];
932 } 1165 }
933 1166
1167#ifndef OPENSSL_NO_ECDH
1168 if (type & SSL_kEECDH)
1169 {
1170 /* XXX: For now, we only support named (not generic) curves.
1171 * In this situation, the serverKeyExchange message has:
1172 * [1 byte CurveType], [2 byte CurveName]
1173 * [1 byte length of encoded point], followed by
1174 * the actual encoded point itself
1175 */
1176 *p = NAMED_CURVE_TYPE;
1177 p += 1;
1178 *p = 0;
1179 p += 1;
1180 *p = curve_id;
1181 p += 1;
1182 *p = encodedlen;
1183 p += 1;
1184 memcpy((unsigned char*)p,
1185 (unsigned char *)encodedPoint,
1186 encodedlen);
1187 OPENSSL_free(encodedPoint);
1188 p += encodedlen;
1189 }
1190#endif
1191
1192#ifndef OPENSSL_NO_PSK
1193 if (type & SSL_kPSK)
1194 {
1195 /* copy PSK identity hint */
1196 s2n(strlen(s->ctx->psk_identity_hint), p);
1197 strncpy((char *)p, s->ctx->psk_identity_hint, strlen(s->ctx->psk_identity_hint));
1198 p+=strlen(s->ctx->psk_identity_hint);
1199 }
1200#endif
1201
934 /* not anonymous */ 1202 /* not anonymous */
935 if (pkey != NULL) 1203 if (pkey != NULL)
936 { 1204 {
@@ -984,6 +1252,25 @@ int dtls1_send_server_key_exchange(SSL *s)
984 } 1252 }
985 else 1253 else
986#endif 1254#endif
1255#if !defined(OPENSSL_NO_ECDSA)
1256 if (pkey->type == EVP_PKEY_EC)
1257 {
1258 /* let's do ECDSA */
1259 EVP_SignInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1260 EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1261 EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1262 EVP_SignUpdate(&md_ctx,&(d[4]),n);
1263 if (!EVP_SignFinal(&md_ctx,&(p[2]),
1264 (unsigned int *)&i,pkey))
1265 {
1266 SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_ECDSA);
1267 goto err;
1268 }
1269 s2n(i,p);
1270 n+=i+2;
1271 }
1272 else
1273#endif
987 { 1274 {
988 /* Is this error check actually needed? */ 1275 /* Is this error check actually needed? */
989 al=SSL_AD_HANDSHAKE_FAILURE; 1276 al=SSL_AD_HANDSHAKE_FAILURE;
@@ -1010,6 +1297,10 @@ int dtls1_send_server_key_exchange(SSL *s)
1010f_err: 1297f_err:
1011 ssl3_send_alert(s,SSL3_AL_FATAL,al); 1298 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1012err: 1299err:
1300#ifndef OPENSSL_NO_ECDH
1301 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
1302 BN_CTX_free(bn_ctx);
1303#endif
1013 EVP_MD_CTX_cleanup(&md_ctx); 1304 EVP_MD_CTX_cleanup(&md_ctx);
1014 return(-1); 1305 return(-1);
1015 } 1306 }
@@ -1123,14 +1414,15 @@ int dtls1_send_server_certificate(SSL *s)
1123 if (s->state == SSL3_ST_SW_CERT_A) 1414 if (s->state == SSL3_ST_SW_CERT_A)
1124 { 1415 {
1125 x=ssl_get_server_send_cert(s); 1416 x=ssl_get_server_send_cert(s);
1126 if (x == NULL && 1417 if (x == NULL)
1127 /* VRS: allow null cert if auth == KRB5 */
1128 (s->s3->tmp.new_cipher->algorithms
1129 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
1130 != (SSL_aKRB5|SSL_kKRB5))
1131 { 1418 {
1132 SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR); 1419 /* VRS: allow null cert if auth == KRB5 */
1133 return(0); 1420 if ((s->s3->tmp.new_cipher->algorithm_mkey != SSL_kKRB5) ||
1421 (s->s3->tmp.new_cipher->algorithm_auth != SSL_aKRB5))
1422 {
1423 SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
1424 return(0);
1425 }
1134 } 1426 }
1135 1427
1136 l=dtls1_output_cert_chain(s,x); 1428 l=dtls1_output_cert_chain(s,x);
@@ -1145,3 +1437,115 @@ int dtls1_send_server_certificate(SSL *s)
1145 /* SSL3_ST_SW_CERT_B */ 1437 /* SSL3_ST_SW_CERT_B */
1146 return(dtls1_do_write(s,SSL3_RT_HANDSHAKE)); 1438 return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
1147 } 1439 }
1440
1441#ifndef OPENSSL_NO_TLSEXT
1442int dtls1_send_newsession_ticket(SSL *s)
1443 {
1444 if (s->state == SSL3_ST_SW_SESSION_TICKET_A)
1445 {
1446 unsigned char *p, *senc, *macstart;
1447 int len, slen;
1448 unsigned int hlen, msg_len;
1449 EVP_CIPHER_CTX ctx;
1450 HMAC_CTX hctx;
1451 SSL_CTX *tctx = s->initial_ctx;
1452 unsigned char iv[EVP_MAX_IV_LENGTH];
1453 unsigned char key_name[16];
1454
1455 /* get session encoding length */
1456 slen = i2d_SSL_SESSION(s->session, NULL);
1457 /* Some length values are 16 bits, so forget it if session is
1458 * too long
1459 */
1460 if (slen > 0xFF00)
1461 return -1;
1462 /* Grow buffer if need be: the length calculation is as
1463 * follows 12 (DTLS handshake message header) +
1464 * 4 (ticket lifetime hint) + 2 (ticket length) +
1465 * 16 (key name) + max_iv_len (iv length) +
1466 * session_length + max_enc_block_size (max encrypted session
1467 * length) + max_md_size (HMAC).
1468 */
1469 if (!BUF_MEM_grow(s->init_buf,
1470 DTLS1_HM_HEADER_LENGTH + 22 + EVP_MAX_IV_LENGTH +
1471 EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + slen))
1472 return -1;
1473 senc = OPENSSL_malloc(slen);
1474 if (!senc)
1475 return -1;
1476 p = senc;
1477 i2d_SSL_SESSION(s->session, &p);
1478
1479 p=(unsigned char *)&(s->init_buf->data[DTLS1_HM_HEADER_LENGTH]);
1480 EVP_CIPHER_CTX_init(&ctx);
1481 HMAC_CTX_init(&hctx);
1482 /* Initialize HMAC and cipher contexts. If callback present
1483 * it does all the work otherwise use generated values
1484 * from parent ctx.
1485 */
1486 if (tctx->tlsext_ticket_key_cb)
1487 {
1488 if (tctx->tlsext_ticket_key_cb(s, key_name, iv, &ctx,
1489 &hctx, 1) < 0)
1490 {
1491 OPENSSL_free(senc);
1492 return -1;
1493 }
1494 }
1495 else
1496 {
1497 RAND_pseudo_bytes(iv, 16);
1498 EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
1499 tctx->tlsext_tick_aes_key, iv);
1500 HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16,
1501 tlsext_tick_md(), NULL);
1502 memcpy(key_name, tctx->tlsext_tick_key_name, 16);
1503 }
1504 l2n(s->session->tlsext_tick_lifetime_hint, p);
1505 /* Skip ticket length for now */
1506 p += 2;
1507 /* Output key name */
1508 macstart = p;
1509 memcpy(p, key_name, 16);
1510 p += 16;
1511 /* output IV */
1512 memcpy(p, iv, EVP_CIPHER_CTX_iv_length(&ctx));
1513 p += EVP_CIPHER_CTX_iv_length(&ctx);
1514 /* Encrypt session data */
1515 EVP_EncryptUpdate(&ctx, p, &len, senc, slen);
1516 p += len;
1517 EVP_EncryptFinal(&ctx, p, &len);
1518 p += len;
1519 EVP_CIPHER_CTX_cleanup(&ctx);
1520
1521 HMAC_Update(&hctx, macstart, p - macstart);
1522 HMAC_Final(&hctx, p, &hlen);
1523 HMAC_CTX_cleanup(&hctx);
1524
1525 p += hlen;
1526 /* Now write out lengths: p points to end of data written */
1527 /* Total length */
1528 len = p - (unsigned char *)(s->init_buf->data);
1529 /* Ticket length */
1530 p=(unsigned char *)&(s->init_buf->data[DTLS1_HM_HEADER_LENGTH]) + 4;
1531 s2n(len - DTLS1_HM_HEADER_LENGTH - 6, p);
1532
1533 /* number of bytes to write */
1534 s->init_num= len;
1535 s->state=SSL3_ST_SW_SESSION_TICKET_B;
1536 s->init_off=0;
1537 OPENSSL_free(senc);
1538
1539 /* XDTLS: set message header ? */
1540 msg_len = s->init_num - DTLS1_HM_HEADER_LENGTH;
1541 dtls1_set_message_header(s, (void *)s->init_buf->data,
1542 SSL3_MT_NEWSESSION_TICKET, msg_len, 0, msg_len);
1543
1544 /* buffer the message to handle re-xmits */
1545 dtls1_buffer_message(s, 0);
1546 }
1547
1548 /* SSL3_ST_SW_SESSION_TICKET_B */
1549 return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
1550 }
1551#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-03 09:19:42 +0000