Repository navigation
Expand file tree
/
Copy pathssl_lib.c
More file actions
9032 lines (7547 loc) · 239 KB
/
Copy pathssl_lib.c
File metadata and controls
9032 lines (7547 loc) · 239 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright 1995-2026 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
* Copyright 2005 Nokia. All rights reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "internal/e_os.h"
#include "internal/e_winsock.h"
#include "ssl_local.h"
#include <openssl/err.h>
#include <openssl/objects.h>
#include <openssl/x509v3.h>
#include <openssl/rand.h>
#include <openssl/ocsp.h>
#include <openssl/dh.h>
#include <openssl/async.h>
#include <openssl/kdf.h>
#include <openssl/ct.h>
#include <openssl/trace.h>
#include <openssl/core_names.h>
#include <openssl/provider.h>
#include "internal/cryptlib.h"
#include "internal/nelem.h"
#include "internal/refcount.h"
#include "internal/thread_once.h"
#include "internal/ktls.h"
#include "internal/to_hex.h"
#include "internal/ssl_unwrap.h"
#include "quic/quic_local.h"
#ifndef OPENSSL_NO_SSLKEYLOG
#include <sys/stat.h>
#include <fcntl.h>
#endif
static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
unsigned char *s, size_t t, size_t *u)
{
return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
}
static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
{
return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
}
static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
size_t s, unsigned char *t)
{
return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
}
static int ssl_undefined_function_6(int r)
{
return ssl_undefined_function(NULL);
}
static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
size_t s, const char *t, size_t u,
const unsigned char *v, size_t w, int x)
{
return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
}
static int ssl_undefined_function_8(SSL_CONNECTION *sc)
{
return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
}
const SSL3_ENC_METHOD ssl3_undef_enc_method = {
ssl_undefined_function_8,
ssl_undefined_function_3,
ssl_undefined_function_4,
ssl_undefined_function_5,
NULL, /* client_finished_label */
0, /* client_finished_label_len */
NULL, /* server_finished_label */
0, /* server_finished_label_len */
ssl_undefined_function_6,
ssl_undefined_function_7,
};
struct ssl_async_args {
SSL *s;
void *buf;
size_t num;
enum { READFUNC,
WRITEFUNC,
OTHERFUNC } type;
union {
int (*func_read)(SSL *, void *, size_t, size_t *);
int (*func_write)(SSL *, const void *, size_t, size_t *);
int (*func_other)(SSL *);
} f;
};
static const struct {
uint8_t mtype;
uint8_t ord;
int nid;
} dane_mds[] = {
{ DANETLS_MATCHING_FULL, 0, NID_undef },
{ DANETLS_MATCHING_2256, 1, NID_sha256 },
{ DANETLS_MATCHING_2512, 2, NID_sha512 },
};
static int dane_ctx_enable(struct dane_ctx_st *dctx)
{
const EVP_MD **mdevp;
uint8_t *mdord;
uint8_t mdmax = DANETLS_MATCHING_LAST;
int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
size_t i;
if (dctx->mdevp != NULL)
return 1;
mdevp = OPENSSL_calloc(n, sizeof(*mdevp));
mdord = OPENSSL_calloc(n, sizeof(*mdord));
if (mdord == NULL || mdevp == NULL) {
OPENSSL_free(mdord);
OPENSSL_free(mdevp);
return 0;
}
/* Install default entries */
for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
const EVP_MD *md;
if (dane_mds[i].nid == NID_undef || (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
continue;
mdevp[dane_mds[i].mtype] = md;
mdord[dane_mds[i].mtype] = dane_mds[i].ord;
}
dctx->mdevp = mdevp;
dctx->mdord = mdord;
dctx->mdmax = mdmax;
return 1;
}
static void dane_ctx_final(struct dane_ctx_st *dctx)
{
OPENSSL_free(dctx->mdevp);
dctx->mdevp = NULL;
OPENSSL_free(dctx->mdord);
dctx->mdord = NULL;
dctx->mdmax = 0;
}
static void tlsa_free(danetls_record *t)
{
if (t == NULL)
return;
OPENSSL_free(t->data);
EVP_PKEY_free(t->spki);
OPENSSL_free(t);
}
static void dane_final(SSL_DANE *dane)
{
sk_danetls_record_pop_free(dane->trecs, tlsa_free);
dane->trecs = NULL;
OSSL_STACK_OF_X509_free(dane->certs);
dane->certs = NULL;
X509_free(dane->mcert);
dane->mcert = NULL;
dane->mtlsa = NULL;
dane->mdpth = -1;
dane->pdpth = -1;
}
/*
* dane_copy - Copy dane configuration, sans verification state.
*/
static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
{
int num;
int i;
if (!DANETLS_ENABLED(&from->dane))
return 1;
num = sk_danetls_record_num(from->dane.trecs);
dane_final(&to->dane);
to->dane.flags = from->dane.flags;
to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
if (to->dane.trecs == NULL) {
ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
return 0;
}
for (i = 0; i < num; ++i) {
danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
t->selector, t->mtype, t->data, t->dlen)
<= 0)
return 0;
}
return 1;
}
static int dane_mtype_set(struct dane_ctx_st *dctx,
const EVP_MD *md, uint8_t mtype, uint8_t ord)
{
int i;
if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
return 0;
}
if (mtype > dctx->mdmax) {
const EVP_MD **mdevp;
uint8_t *mdord;
int n = ((int)mtype) + 1;
mdevp = OPENSSL_realloc_array(dctx->mdevp, n, sizeof(*mdevp));
if (mdevp == NULL)
return -1;
dctx->mdevp = mdevp;
mdord = OPENSSL_realloc_array(dctx->mdord, n, sizeof(*mdord));
if (mdord == NULL)
return -1;
dctx->mdord = mdord;
/* Zero-fill any gaps */
for (i = dctx->mdmax + 1; i < mtype; ++i) {
mdevp[i] = NULL;
mdord[i] = 0;
}
dctx->mdmax = mtype;
}
dctx->mdevp[mtype] = md;
/* Coerce ordinal of disabled matching types to 0 */
dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
return 1;
}
static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
{
if (mtype > dane->dctx->mdmax)
return NULL;
return dane->dctx->mdevp[mtype];
}
static int dane_tlsa_add(SSL_DANE *dane,
uint8_t usage,
uint8_t selector,
uint8_t mtype, const unsigned char *data, size_t dlen)
{
danetls_record *t;
const EVP_MD *md = NULL;
int ilen = (int)dlen;
int i;
int num;
int mdsize;
if (dane->trecs == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
return -1;
}
if (ilen < 0 || dlen != (size_t)ilen) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
return 0;
}
if (usage > DANETLS_USAGE_LAST) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
return 0;
}
if (selector > DANETLS_SELECTOR_LAST) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
return 0;
}
if (mtype != DANETLS_MATCHING_FULL) {
md = tlsa_md_get(dane, mtype);
if (md == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
return 0;
}
}
if (md != NULL) {
mdsize = EVP_MD_get_size(md);
if (mdsize <= 0 || dlen != (size_t)mdsize) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
return 0;
}
}
if (!data) {
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
return 0;
}
if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
return -1;
t->usage = usage;
t->selector = selector;
t->mtype = mtype;
t->data = OPENSSL_malloc(dlen);
if (t->data == NULL) {
tlsa_free(t);
return -1;
}
memcpy(t->data, data, dlen);
t->dlen = dlen;
/* Validate and cache full certificate or public key */
if (mtype == DANETLS_MATCHING_FULL) {
const unsigned char *p = data;
X509 *cert = NULL;
EVP_PKEY *pkey = NULL;
switch (selector) {
case DANETLS_SELECTOR_CERT:
if (!d2i_X509(&cert, &p, ilen) || p < data || dlen != (size_t)(p - data)) {
X509_free(cert);
tlsa_free(t);
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
return 0;
}
if (X509_get0_pubkey(cert) == NULL) {
X509_free(cert);
tlsa_free(t);
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
return 0;
}
if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
/*
* The Full(0) certificate decodes to a seemingly valid X.509
* object with a plausible key, so the TLSA record is well
* formed. However, we don't actually need the certificate for
* usages PKIX-EE(1) or DANE-EE(3), because at least the EE
* certificate is always presented by the peer. We discard the
* certificate, and just use the TLSA data as an opaque blob
* for matching the raw presented DER octets.
*
* DO NOT FREE `t` here, it will be added to the TLSA record
* list below!
*/
X509_free(cert);
break;
}
/*
* For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
* records that contain full certificates of trust-anchors that are
* not present in the wire chain. For usage PKIX-TA(0), we augment
* the chain with untrusted Full(0) certificates from DNS, in case
* they are missing from the chain.
*/
if ((dane->certs == NULL && (dane->certs = sk_X509_new_null()) == NULL) || !sk_X509_push(dane->certs, cert)) {
ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
X509_free(cert);
tlsa_free(t);
return -1;
}
break;
case DANETLS_SELECTOR_SPKI:
if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data || dlen != (size_t)(p - data)) {
EVP_PKEY_free(pkey);
tlsa_free(t);
ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
return 0;
}
/*
* For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
* records that contain full bare keys of trust-anchors that are
* not present in the wire chain.
*/
if (usage == DANETLS_USAGE_DANE_TA)
t->spki = pkey;
else
EVP_PKEY_free(pkey);
break;
}
}
/*-
* Find the right insertion point for the new record.
*
* See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
* they can be processed first, as they require no chain building, and no
* expiration or hostname checks. Because DANE-EE(3) is numerically
* largest, this is accomplished via descending sort by "usage".
*
* We also sort in descending order by matching ordinal to simplify
* the implementation of digest agility in the verification code.
*
* The choice of order for the selector is not significant, so we
* use the same descending order for consistency.
*/
num = sk_danetls_record_num(dane->trecs);
for (i = 0; i < num; ++i) {
danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
if (rec->usage > usage)
continue;
if (rec->usage < usage)
break;
if (rec->selector > selector)
continue;
if (rec->selector < selector)
break;
if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
continue;
break;
}
if (!sk_danetls_record_insert(dane->trecs, t, i)) {
tlsa_free(t);
ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
return -1;
}
dane->umask |= DANETLS_USAGE_BIT(usage);
return 1;
}
/*
* Return 0 if there is only one version configured and it was disabled
* at configure time. Return 1 otherwise.
*/
static int ssl_check_allowed_versions(int min_version, int max_version)
{
int minisdtls = 0, maxisdtls = 0;
/* Figure out if we're doing DTLS versions or TLS versions */
if (min_version == DTLS1_BAD_VER
|| min_version >> 8 == DTLS1_VERSION_MAJOR)
minisdtls = 1;
if (max_version == DTLS1_BAD_VER
|| max_version >> 8 == DTLS1_VERSION_MAJOR)
maxisdtls = 1;
/* A wildcard version of 0 could be DTLS or TLS. */
if ((minisdtls && !maxisdtls && max_version != 0)
|| (maxisdtls && !minisdtls && min_version != 0)) {
/* Mixing DTLS and TLS versions will lead to sadness; deny it. */
return 0;
}
if (minisdtls || maxisdtls) {
/* Do DTLS version checks. */
if (min_version == 0)
/* Ignore DTLS1_BAD_VER */
min_version = DTLS1_VERSION;
if (max_version == 0)
max_version = DTLS1_3_VERSION;
#ifdef OPENSSL_NO_DTLS1_3
if (max_version == DTLS1_3_VERSION)
max_version = DTLS1_2_VERSION;
#endif
#ifdef OPENSSL_NO_DTLS1_2
if (max_version == DTLS1_2_VERSION)
max_version = DTLS1_VERSION;
#endif
#ifdef OPENSSL_NO_DTLS1
if (min_version == DTLS1_VERSION)
min_version = DTLS1_2_VERSION;
#endif
/* Done massaging versions; do the check. */
if (0
#ifdef OPENSSL_NO_DTLS1
|| (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
&& DTLS_VERSION_GE(DTLS1_VERSION, max_version))
#endif
#ifdef OPENSSL_NO_DTLS1_2
|| (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
&& DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
#endif
#ifdef OPENSSL_NO_DTLS1_3
|| (DTLS_VERSION_GE(min_version, DTLS1_3_VERSION)
&& DTLS_VERSION_GE(DTLS1_3_VERSION, max_version))
#endif
)
return 0;
} else {
/* Regular TLS version checks. */
if (min_version == 0)
min_version = TLS1_VERSION;
if (max_version == 0)
max_version = TLS1_3_VERSION;
#ifdef OPENSSL_NO_TLS1_3
if (max_version == TLS1_3_VERSION)
max_version = TLS1_2_VERSION;
#endif
#ifdef OPENSSL_NO_TLS1_2
if (max_version == TLS1_2_VERSION)
max_version = TLS1_1_VERSION;
#endif
#ifdef OPENSSL_NO_TLS1_1
if (max_version == TLS1_1_VERSION)
max_version = TLS1_VERSION;
#endif
#ifdef OPENSSL_NO_TLS1
if (min_version == TLS1_VERSION)
min_version = TLS1_1_VERSION;
#endif
#ifdef OPENSSL_NO_TLS1_1
if (min_version == TLS1_1_VERSION)
min_version = TLS1_2_VERSION;
#endif
#ifdef OPENSSL_NO_TLS1_2
if (min_version == TLS1_2_VERSION)
min_version = TLS1_3_VERSION;
#endif
/* Done massaging versions; do the check. */
if (0
#ifdef OPENSSL_NO_TLS1
|| (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
#endif
#ifdef OPENSSL_NO_TLS1_1
|| (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
#endif
#ifdef OPENSSL_NO_TLS1_2
|| (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
#endif
#ifdef OPENSSL_NO_TLS1_3
|| (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
#endif
)
return 0;
}
return 1;
}
#if defined(__TANDEM) && defined(OPENSSL_VPROC)
/*
* Define a VPROC function for HP NonStop build ssl library.
* This is used by platform version identification tools.
* Do not inline this procedure or make it static.
*/
#define OPENSSL_VPROC_STRING_(x) x##_SSL
#define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
#define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
void OPENSSL_VPROC_FUNC(void) { }
#endif
int SSL_clear(SSL *s)
{
if (s->method == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
return 0;
}
return s->method->ssl_reset(s);
}
static void ssl_connection_clear_tls13_secrets(SSL_CONNECTION *sc)
{
OPENSSL_cleanse(sc->early_secret, sizeof(sc->early_secret));
OPENSSL_cleanse(sc->handshake_secret, sizeof(sc->handshake_secret));
OPENSSL_cleanse(sc->master_secret, sizeof(sc->master_secret));
OPENSSL_cleanse(sc->resumption_master_secret,
sizeof(sc->resumption_master_secret));
OPENSSL_cleanse(sc->client_finished_secret,
sizeof(sc->client_finished_secret));
OPENSSL_cleanse(sc->server_finished_secret,
sizeof(sc->server_finished_secret));
OPENSSL_cleanse(sc->client_app_traffic_secret,
sizeof(sc->client_app_traffic_secret));
OPENSSL_cleanse(sc->server_app_traffic_secret,
sizeof(sc->server_app_traffic_secret));
OPENSSL_cleanse(sc->exporter_master_secret,
sizeof(sc->exporter_master_secret));
OPENSSL_cleanse(sc->early_exporter_master_secret,
sizeof(sc->early_exporter_master_secret));
}
int ossl_ssl_connection_reset(SSL *s)
{
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
if (sc == NULL)
return 0;
ssl_connection_clear_tls13_secrets(sc);
if (ssl_clear_bad_session(sc)) {
SSL_SESSION_free(sc->session);
sc->session = NULL;
}
SSL_SESSION_free(sc->psksession);
sc->psksession = NULL;
OPENSSL_free(sc->psksession_id);
sc->psksession_id = NULL;
sc->psksession_id_len = 0;
sc->hello_retry_request = SSL_HRR_NONE;
sc->dtls13_process_hello = 0;
sc->sent_tickets = 0;
sc->error = 0;
sc->hit = 0;
sc->shutdown = 0;
sc->ext.early_data_suppressed = 0;
sc->ext.early_exporter_ready = 0;
SSL_SESSION_free(sc->ext.early_data_session);
sc->ext.early_data_session = NULL;
sc->ext.tick_age_checked = 0;
sc->ext.tick_age_ms = 0;
if (sc->renegotiate) {
ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
return 0;
}
ossl_statem_clear(sc);
sc->version = s->method->version;
sc->client_version = sc->version;
sc->rwstate = SSL_NOTHING;
BUF_MEM_free(sc->init_buf);
sc->init_buf = NULL;
sc->first_packet = 0;
sc->key_update = SSL_KEY_UPDATE_NONE;
memset(sc->ext.compress_certificate_from_peer, 0,
sizeof(sc->ext.compress_certificate_from_peer));
sc->ext.compress_certificate_sent = 0;
EVP_MD_CTX_free(sc->pha_dgst);
sc->pha_dgst = NULL;
/* Reset DANE verification result state */
sc->dane.mdpth = -1;
sc->dane.pdpth = -1;
X509_free(sc->dane.mcert);
sc->dane.mcert = NULL;
sc->dane.mtlsa = NULL;
/* Clear the verification result peername */
X509_VERIFY_PARAM_move_peername(sc->param, NULL);
/* Clear any shared connection state */
OPENSSL_free(sc->shared_sigalgs);
sc->shared_sigalgs = NULL;
sc->shared_sigalgslen = 0;
/*
* Check to see if we were changed into a different method, if so, revert
* back.
*/
if (s->method != s->defltmeth) {
/*
* For DTLS listener-created connections, we need to preserve the
* peer_addr, rx (DTLS_RX), listener, and created_at across method changes.
* These are set during connection creation and must survive SSL_clear().
* The ssl_deinit/ssl_init sequence would otherwise free the old d1
* structure and allocate a new one, losing these values.
*/
#if !defined(OPENSSL_NO_DTLS) && !defined(OPENSSL_NO_SOCK)
BIO_ADDR saved_peer_addr = { 0 };
DTLS_RX *saved_rx = NULL;
SSL *saved_listener = NULL;
OSSL_TIME saved_created_at = ossl_time_zero();
unsigned int saved_req_blocking_mode = DTLS_BLOCKING_MODE_INHERIT;
int is_dtls_listener_conn = 0;
if (SSL_CONNECTION_IS_DTLS(sc) && sc->d1 != NULL
&& sc->d1->listener != NULL) {
is_dtls_listener_conn = 1;
saved_peer_addr = sc->d1->peer_addr;
saved_rx = sc->d1->rx;
saved_listener = sc->d1->listener;
saved_created_at = sc->d1->created_at;
saved_req_blocking_mode = sc->d1->req_blocking_mode;
/*
* Prevent dtls1_free from freeing rx and releasing the listener
* reference - we'll restore them after ssl_init.
*/
sc->d1->rx = NULL;
sc->d1->listener = NULL;
}
#endif
s->method->ssl_deinit(s);
s->method = s->defltmeth;
if (!s->method->ssl_init(s)) {
#if !defined(OPENSSL_NO_DTLS) && !defined(OPENSSL_NO_SOCK)
if (is_dtls_listener_conn) {
DTLS_LISTENER *dl = (DTLS_LISTENER *)saved_listener;
/* The detached connection cannot unregister itself on free. */
ossl_dtls_listener_unregister_established_conn(saved_listener,
&saved_peer_addr);
ossl_crypto_mutex_lock(dl->mutex);
sc->listener_rx = NULL;
ossl_crypto_mutex_unlock(dl->mutex);
ossl_dtls_rx_free(saved_rx);
SSL_free(saved_listener);
}
#endif
return 0;
}
#if !defined(OPENSSL_NO_DTLS) && !defined(OPENSSL_NO_SOCK)
/* Restore DTLS listener connection state */
if (is_dtls_listener_conn && sc->d1 != NULL) {
sc->d1->peer_addr = saved_peer_addr;
sc->d1->rx = saved_rx;
sc->d1->listener = saved_listener;
sc->d1->created_at = saved_created_at;
/*
* The blocking mode is how the application configured this
* connection, not handshake state, so it survives a clear.
*/
sc->d1->req_blocking_mode = saved_req_blocking_mode;
}
#endif
} else {
if (!s->method->ssl_clear(s))
return 0;
}
ossl_quic_tls_clear(sc->qtls);
if (!RECORD_LAYER_reset(&sc->rlayer))
return 0;
return 1;
}
#ifndef OPENSSL_NO_DEPRECATED_3_0
/** Used to change an SSL_CTXs default SSL method type */
int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
{
STACK_OF(SSL_CIPHER) *sk;
if (IS_QUIC_CTX(ctx)) {
ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
return 0;
}
ctx->method = meth;
if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
return 0;
}
sk = ssl_create_cipher_list(ctx,
ctx->tls13_ciphersuites,
&(ctx->cipher_list),
&(ctx->cipher_list_by_id),
OSSL_default_cipher_list(), ctx->cert);
if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
return 0;
}
return 1;
}
#endif
SSL *SSL_new(SSL_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
return NULL;
}
if (ctx->method == NULL) {
ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
return NULL;
}
return ctx->method->ssl_new(ctx);
}
int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method, int type)
{
if (!SSL_CTX_up_ref(ctx))
return 0;
ssl->lock = CRYPTO_THREAD_lock_new();
if (ssl->lock == NULL || !CRYPTO_NEW_REF(&ssl->references, 1))
goto err;
if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data)) {
CRYPTO_FREE_REF(&ssl->references);
goto err;
}
ssl->ctx = ctx;
ssl->type = type;
ssl->defltmeth = ssl->method = method;
return 1;
err:
CRYPTO_THREAD_lock_free(ssl->lock);
ssl->lock = NULL;
SSL_CTX_free(ctx);
return 0;
}
SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, SSL *user_ssl,
const SSL_METHOD *method)
{
SSL_CONNECTION *s;
SSL *ssl;
s = OPENSSL_zalloc(sizeof(*s));
if (s == NULL)
return NULL;
ssl = &s->ssl;
s->user_ssl = (user_ssl == NULL) ? ssl : user_ssl;
if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
OPENSSL_free(s);
s = NULL;
ssl = NULL;
goto sslerr;
}
RECORD_LAYER_init(&s->rlayer, s);
s->options = ctx->options;
s->dane.flags = ctx->dane.flags;
if (method->version == ctx->method->version) {
s->min_proto_version = ctx->min_proto_version;
s->max_proto_version = ctx->max_proto_version;
}
s->mode = ctx->mode;
s->max_cert_list = ctx->max_cert_list;
s->max_early_data = ctx->max_early_data;
s->recv_max_early_data = ctx->recv_max_early_data;
s->num_tickets = ctx->num_tickets;
s->pha_enabled = ctx->pha_enabled;
/* Shallow copy of the ciphersuites stack */
s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
if (s->tls13_ciphersuites == NULL)
goto cerr;
/*
* Earlier library versions used to copy the pointer to the CERT, not
* its contents; only when setting new parameters for the per-SSL
* copy, ssl_cert_new would be called (and the direct reference to
* the per-SSL_CTX settings would be lost, but those still were
* indirectly accessed for various purposes, and for that reason they
* used to be known as s->ctx->default_cert). Now we don't look at the
* SSL_CTX's CERT after having duplicated it once.
*/
s->cert = ssl_cert_dup(ctx->cert);
if (s->cert == NULL)
goto sslerr;
RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
s->msg_callback = ctx->msg_callback;
s->msg_callback_arg = ctx->msg_callback_arg;
s->verify_mode = ctx->verify_mode;
s->not_resumable_session_cb = ctx->not_resumable_session_cb;
s->rlayer.record_padding_cb = ctx->record_padding_cb;
s->rlayer.record_padding_arg = ctx->record_padding_arg;
s->rlayer.block_padding = ctx->block_padding;
s->rlayer.hs_padding = ctx->hs_padding;
s->sid_ctx_length = ctx->sid_ctx_length;
if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
goto err;
memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
s->verify_callback = ctx->default_verify_callback;
s->generate_session_id = ctx->generate_session_id;
s->param = X509_VERIFY_PARAM_new();
if (s->param == NULL)
goto asn1err;
X509_VERIFY_PARAM_inherit(s->param, ctx->param);
s->quiet_shutdown = IS_QUIC_CTX(ctx) ? 0 : ctx->quiet_shutdown;
if (!IS_QUIC_CTX(ctx))
s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
s->max_send_fragment = ctx->max_send_fragment;
s->split_send_fragment = ctx->split_send_fragment;
s->max_pipelines = ctx->max_pipelines;
s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
s->ext.debug_cb = 0;
s->ext.debug_arg = NULL;
s->ext.ticket_expected = 0;
s->ext.status_type = ctx->ext.status_type;
s->ext.status_expected = 0;
s->ext.ocsp.ids = NULL;
s->ext.ocsp.exts = NULL;
s->ext.ocsp.resp = NULL;
s->ext.ocsp.resp_len = 0;
s->ext.ocsp.resp_ex = NULL;
if (!SSL_CTX_up_ref(ctx))
goto err;
s->session_ctx = ctx;
if (ctx->ext.supportedgroups != NULL) {
size_t add = 0;
if (ctx->ext.supportedgroups_len == 0)
/* Add 1 so allocation won't fail */
add = 1;
s->ext.supportedgroups = OPENSSL_memdup(ctx->ext.supportedgroups,
(ctx->ext.supportedgroups_len + add)
* sizeof(*ctx->ext.supportedgroups));
if (s->ext.supportedgroups == NULL) {
s->ext.supportedgroups_len = 0;
goto err;
}
s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
}
if (ctx->ext.keyshares != NULL) {
size_t add = 0;
if (ctx->ext.keyshares_len == 0)
/* Add 1 so allocation won't fail */
add = 1;
s->ext.keyshares = OPENSSL_memdup(ctx->ext.keyshares,
(ctx->ext.keyshares_len + add)
* sizeof(*ctx->ext.keyshares));
if (s->ext.keyshares == NULL) {
s->ext.keyshares_len = 0;
goto err;
}
s->ext.keyshares_len = ctx->ext.keyshares_len;
}
if (ctx->ext.tuples != NULL) {
size_t add = 0;
if (ctx->ext.tuples_len == 0)
/* Add 1 so allocation won't fail */
add = 1;
s->ext.tuples = OPENSSL_memdup(ctx->ext.tuples,
(ctx->ext.tuples_len + add)
* sizeof(*ctx->ext.tuples));
if (s->ext.tuples == NULL) {
s->ext.tuples_len = 0;
goto err;
}
s->ext.tuples_len = ctx->ext.tuples_len;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
s->ext.npn = NULL;
#endif
if (ctx->ext.alpn != NULL) {
s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
if (s->ext.alpn == NULL) {
s->ext.alpn_len = 0;
goto err;
}
memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
s->ext.alpn_len = ctx->ext.alpn_len;
}
s->verified_chain = NULL;
s->verify_result = X509_V_OK;
s->default_passwd_callback = ctx->default_passwd_callback;
s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
s->key_update = SSL_KEY_UPDATE_NONE;
if (!IS_QUIC_CTX(ctx)) {
s->allow_early_data_cb = ctx->allow_early_data_cb;
s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
}
if (!method->ssl_init(ssl))
goto sslerr;
s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
if (!method->ssl_reset(ssl))