summaryrefslogtreecommitdiff
path: root/security/nss/lib/ssl/sslimpl.h
blob: dee9aa20fede2bf31b2f5b2fe8971da673904893 (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is PRIVATE to SSL and should be the first thing included by
 * any SSL implementation file.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef __sslimpl_h_
#define __sslimpl_h_

#ifdef DEBUG
#undef NDEBUG
#else
#undef NDEBUG
#define NDEBUG
#endif
#include "secport.h"
#include "secerr.h"
#include "sslerr.h"
#include "sslexp.h"
#include "ssl3prot.h"
#include "hasht.h"
#include "nssilock.h"
#include "pkcs11t.h"
#if defined(XP_UNIX) || defined(XP_BEOS)
#include "unistd.h"
#endif
#include "nssrwlk.h"
#include "prthread.h"
#include "prclist.h"
#include "private/pprthred.h"

#include "sslt.h" /* for some formerly private types, now public */

typedef struct sslSocketStr sslSocket;
typedef struct sslNamedGroupDefStr sslNamedGroupDef;
#include "sslencode.h"
#include "sslexp.h"
#include "ssl3ext.h"
#include "sslspec.h"

#if defined(DEBUG) || defined(TRACE)
#ifdef __cplusplus
#define Debug 1
#else
extern int Debug;
#endif
#else
#undef Debug
#endif

#if defined(DEBUG) && !defined(TRACE) && !defined(NISCC_TEST)
#define TRACE
#endif

#ifdef TRACE
#define SSL_TRC(a, b)     \
    if (ssl_trace >= (a)) \
    ssl_Trace b
#define PRINT_BUF(a, b)   \
    if (ssl_trace >= (a)) \
    ssl_PrintBuf b
#define PRINT_KEY(a, b)   \
    if (ssl_trace >= (a)) \
    ssl_PrintKey b
#else
#define SSL_TRC(a, b)
#define PRINT_BUF(a, b)
#define PRINT_KEY(a, b)
#endif

#ifdef DEBUG
#define SSL_DBG(b) \
    if (ssl_debug) \
    ssl_Trace b
#else
#define SSL_DBG(b)
#endif

#define LSB(x) ((unsigned char)((x)&0xff))
#define MSB(x) ((unsigned char)(((unsigned)(x)) >> 8))

#define CONST_CAST(T, X) ((T *)(X))

/************************************************************************/

typedef enum { SSLAppOpRead = 0,
               SSLAppOpWrite,
               SSLAppOpRDWR,
               SSLAppOpPost,
               SSLAppOpHeader
} SSLAppOperation;

#define SSL3_SESSIONID_BYTES 32

#define SSL_MIN_CHALLENGE_BYTES 16
#define SSL_MAX_CHALLENGE_BYTES 32

#define SSL3_MASTER_SECRET_LENGTH 48

/* number of wrap mechanisms potentially used to wrap master secrets. */
#define SSL_NUM_WRAP_MECHS 15
#define SSL_NUM_WRAP_KEYS 6

/* This makes the cert cache entry exactly 4k. */
#define SSL_MAX_CACHED_CERT_LEN 4060

#ifndef BPB
#define BPB 8 /* Bits Per Byte */
#endif

/* The default value from RFC 4347 is 1s, which is too slow. */
#define DTLS_RETRANSMIT_INITIAL_MS 50
/* The maximum time to wait between retransmissions. */
#define DTLS_RETRANSMIT_MAX_MS 10000
/* Time to wait in FINISHED state for retransmissions. */
#define DTLS_RETRANSMIT_FINISHED_MS 30000

/* default number of entries in namedGroupPreferences */
#define SSL_NAMED_GROUP_COUNT 31

/* Types and names of elliptic curves used in TLS */
typedef enum {
    ec_type_explicitPrime = 1,      /* not supported */
    ec_type_explicitChar2Curve = 2, /* not supported */
    ec_type_named = 3
} ECType;

typedef enum {
    ticket_allow_early_data = 1,
    ticket_allow_psk_ke = 2,
    ticket_allow_psk_dhe_ke = 4,
    ticket_allow_psk_auth = 8,
    ticket_allow_psk_sign_auth = 16
} TLS13SessionTicketFlags;

struct sslNamedGroupDefStr {
    /* The name is the value that is encoded on the wire in TLS. */
    SSLNamedGroup name;
    /* The number of bits in the group. */
    unsigned int bits;
    /* The key exchange algorithm this group provides. */
    SSLKEAType keaType;
    /* The OID that identifies the group to PKCS11.  This also determines
     * whether the group is enabled in policy. */
    SECOidTag oidTag;
    /* Assume that the group is always supported. */
    PRBool assumeSupported;
};

typedef struct sslConnectInfoStr sslConnectInfo;
typedef struct sslGatherStr sslGather;
typedef struct sslSecurityInfoStr sslSecurityInfo;
typedef struct sslSessionIDStr sslSessionID;
typedef struct sslSocketOpsStr sslSocketOps;

typedef struct ssl3StateStr ssl3State;
typedef struct ssl3CertNodeStr ssl3CertNode;
typedef struct sslKeyPairStr sslKeyPair;
typedef struct ssl3DHParamsStr ssl3DHParams;

struct ssl3CertNodeStr {
    struct ssl3CertNodeStr *next;
    CERTCertificate *cert;
};

typedef SECStatus (*sslHandshakeFunc)(sslSocket *ss);

typedef void (*sslSessionIDCacheFunc)(sslSessionID *sid);
typedef void (*sslSessionIDUncacheFunc)(sslSessionID *sid);
typedef sslSessionID *(*sslSessionIDLookupFunc)(const PRIPv6Addr *addr,
                                                unsigned char *sid,
                                                unsigned int sidLen,
                                                CERTCertDBHandle *dbHandle);

/* Socket ops */
struct sslSocketOpsStr {
    int (*connect)(sslSocket *, const PRNetAddr *);
    PRFileDesc *(*accept)(sslSocket *, PRNetAddr *);
    int (*bind)(sslSocket *, const PRNetAddr *);
    int (*listen)(sslSocket *, int);
    int (*shutdown)(sslSocket *, int);
    int (*close)(sslSocket *);

    int (*recv)(sslSocket *, unsigned char *, int, int);

    /* points to the higher-layer send func, e.g. ssl_SecureSend. */
    int (*send)(sslSocket *, const unsigned char *, int, int);
    int (*read)(sslSocket *, unsigned char *, int);
    int (*write)(sslSocket *, const unsigned char *, int);

    int (*getpeername)(sslSocket *, PRNetAddr *);
    int (*getsockname)(sslSocket *, PRNetAddr *);
};

/* Flags interpreted by ssl send functions. */
#define ssl_SEND_FLAG_FORCE_INTO_BUFFER 0x40000000
#define ssl_SEND_FLAG_NO_BUFFER 0x20000000
#define ssl_SEND_FLAG_NO_RETRANSMIT 0x08000000 /* DTLS only */
#define ssl_SEND_FLAG_MASK 0x7f000000

/*
** SSL3 cipher suite policy and preference struct.
*/
typedef struct {
#if !defined(_WIN32)
    unsigned int cipher_suite : 16;
    unsigned int policy : 8;
    unsigned int enabled : 1;
    unsigned int isPresent : 1;
#else
    ssl3CipherSuite cipher_suite;
    PRUint8 policy;
    unsigned char enabled : 1;
    unsigned char isPresent : 1;
#endif
} ssl3CipherSuiteCfg;

#define ssl_V3_SUITES_IMPLEMENTED 71

#define MAX_DTLS_SRTP_CIPHER_SUITES 4

/* MAX_SIGNATURE_SCHEMES allows for all the values we support. */
#define MAX_SIGNATURE_SCHEMES 15

typedef struct sslOptionsStr {
    /* If SSL_SetNextProtoNego has been called, then this contains the
     * list of supported protocols. */
    SECItem nextProtoNego;

    unsigned int useSecurity : 1;
    unsigned int useSocks : 1;
    unsigned int requestCertificate : 1;
    unsigned int requireCertificate : 2;
    unsigned int handshakeAsClient : 1;
    unsigned int handshakeAsServer : 1;
    unsigned int noCache : 1;
    unsigned int fdx : 1;
    unsigned int detectRollBack : 1;
    unsigned int noLocks : 1;
    unsigned int enableSessionTickets : 1;
    unsigned int enableDeflate : 1; /* Deprecated. */
    unsigned int enableRenegotiation : 2;
    unsigned int requireSafeNegotiation : 1;
    unsigned int enableFalseStart : 1;
    unsigned int cbcRandomIV : 1;
    unsigned int enableOCSPStapling : 1;
    unsigned int enableNPN : 1;
    unsigned int enableALPN : 1;
    unsigned int reuseServerECDHEKey : 1;
    unsigned int enableFallbackSCSV : 1;
    unsigned int enableServerDhe : 1;
    unsigned int enableExtendedMS : 1;
    unsigned int enableSignedCertTimestamps : 1;
    unsigned int requireDHENamedGroups : 1;
    unsigned int enable0RttData : 1;
    unsigned int enableTls13CompatMode : 1;
} sslOptions;

typedef enum { sslHandshakingUndetermined = 0,
               sslHandshakingAsClient,
               sslHandshakingAsServer
} sslHandshakingType;

#define SSL_LOCK_RANK_SPEC 255

/* These are the valid values for shutdownHow.
** These values are each 1 greater than the NSPR values, and the code
** depends on that relation to efficiently convert PR_SHUTDOWN values
** into ssl_SHUTDOWN values.  These values use one bit for read, and
** another bit for write, and can be used as bitmasks.
*/
#define ssl_SHUTDOWN_NONE 0 /* NOT shutdown at all */
#define ssl_SHUTDOWN_RCV 1  /* PR_SHUTDOWN_RCV  +1 */
#define ssl_SHUTDOWN_SEND 2 /* PR_SHUTDOWN_SEND +1 */
#define ssl_SHUTDOWN_BOTH 3 /* PR_SHUTDOWN_BOTH +1 */

/*
** A gather object. Used to read some data until a count has been
** satisfied. Primarily for support of async sockets.
** Everything in here is protected by the recvBufLock.
*/
struct sslGatherStr {
    int state; /* see GS_ values below. */

    /* "buf" holds received plaintext SSL records, after decrypt and MAC check.
     * recv'd ciphertext records are put in inbuf (see below), then decrypted
     * into buf.
     */
    sslBuffer buf; /*recvBufLock*/

    /* number of bytes previously read into hdr or inbuf.
    ** (offset - writeOffset) is the number of ciphertext bytes read in but
    **     not yet deciphered.
    */
    unsigned int offset;

    /* number of bytes to read in next call to ssl_DefRecv (recv) */
    unsigned int remainder;

    /* DoRecv uses the next two values to extract application data.
    ** The difference between writeOffset and readOffset is the amount of
    ** data available to the application.   Note that the actual offset of
    ** the data in "buf" is recordOffset (above), not readOffset.
    ** In the current implementation, this is made available before the
    ** MAC is checked!!
    */
    unsigned int readOffset; /* Spot where DATA reader (e.g. application
                               ** or handshake code) will read next.
                               ** Always zero for SSl3 application data.
                               */
    /* offset in buf/inbuf/hdr into which new data will be read from socket. */
    unsigned int writeOffset;

    /* Buffer for ssl3 to read (encrypted) data from the socket */
    sslBuffer inbuf; /*recvBufLock*/

    /* The ssl[23]_GatherData functions read data into this buffer, rather
    ** than into buf or inbuf, while in the GS_HEADER state.
    ** The portion of the SSL record header put here always comes off the wire
    ** as plaintext, never ciphertext.
    ** For SSL3/TLS, the plaintext portion is 5 bytes long. For DTLS it is 13.
    */
    unsigned char hdr[13];

    /* Buffer for DTLS data read off the wire as a single datagram */
    sslBuffer dtlsPacket;

    /* the start of the buffered DTLS record in dtlsPacket */
    unsigned int dtlsPacketOffset;

    /* tracks whether we've seen a v3-type record before and must reject
     * any further v2-type records. */
    PRBool rejectV2Records;
};

/* sslGather.state */
#define GS_INIT 0
#define GS_HEADER 1
#define GS_DATA 2

typedef struct {
    PRUint8 wrapped_master_secret[48];
    PRUint16 wrapped_master_secret_len;
    PRUint8 resumable;
    PRUint8 extendedMasterSecretUsed;
} ssl3SidKeys; /* 52 bytes */

typedef enum { never_cached,
               in_client_cache,
               in_server_cache,
               invalid_cache /* no longer in any cache. */
} Cached;

#include "sslcert.h"

struct sslSessionIDStr {
    /* The global cache lock must be held when accessing these members when the
     * sid is in any cache.
     */
    sslSessionID *next; /* chain used for client sockets, only */
    Cached cached;
    int references;
    PRTime lastAccessTime;

    /* The rest of the members, except for the members of u.ssl3.locked, may
     * be modified only when the sid is not in any cache.
     */

    CERTCertificate *peerCert;
    SECItemArray peerCertStatus;        /* client only */
    const char *peerID;                 /* client only */
    const char *urlSvrName;             /* client only */
    const sslNamedGroupDef *namedCurve; /* (server) for certificate lookup */
    CERTCertificate *localCert;

    PRIPv6Addr addr;
    PRUint16 port;

    SSL3ProtocolVersion version;

    PRTime creationTime;
    PRTime expirationTime;

    SSLAuthType authType;
    PRUint32 authKeyBits;
    SSLKEAType keaType;
    PRUint32 keaKeyBits;
    SSLNamedGroup keaGroup;
    SSLSignatureScheme sigScheme;

    union {
        struct {
            /* values that are copied into the server's on-disk SID cache. */
            PRUint8 sessionIDLength;
            PRUint8 sessionID[SSL3_SESSIONID_BYTES];

            ssl3CipherSuite cipherSuite;
            int policy;
            ssl3SidKeys keys;
            /* mechanism used to wrap master secret */
            CK_MECHANISM_TYPE masterWrapMech;

            /* The following values are NOT restored from the server's on-disk
             * session cache, but are restored from the client's cache.
             */
            PK11SymKey *clientWriteKey;
            PK11SymKey *serverWriteKey;

            /* The following values pertain to the slot that wrapped the
            ** master secret. (used only in client)
            */
            SECMODModuleID masterModuleID;
            /* what module wrapped the master secret */
            CK_SLOT_ID masterSlotID;
            PRUint16 masterWrapIndex;
            /* what's the key index for the wrapping key */
            PRUint16 masterWrapSeries;
            /* keep track of the slot series, so we don't
             * accidently try to use new keys after the
             * card gets removed and replaced.*/

            /* The following values pertain to the slot that did the signature
            ** for client auth.   (used only in client)
            */
            SECMODModuleID clAuthModuleID;
            CK_SLOT_ID clAuthSlotID;
            PRUint16 clAuthSeries;

            char masterValid;
            char clAuthValid;

            SECItem srvName;

            /* Signed certificate timestamps received in a TLS extension.
            ** (used only in client).
            */
            SECItem signedCertTimestamps;

            /* The NPN/ALPN value negotiated in the original connection.
             * Used for TLS 1.3. */
            SECItem alpnSelection;

            /* This lock is lazily initialized by CacheSID when a sid is first
             * cached. Before then, there is no need to lock anything because
             * the sid isn't being shared by anything.
             */
            PRRWLock *lock;

            /* The lock must be held while reading or writing these members
             * because they change while the sid is cached.
             */
            struct {
                /* The session ticket, if we have one, is sent as an extension
                 * in the ClientHello message. This field is used only by
                 * clients. It is protected by lock when lock is non-null
                 * (after the sid has been added to the client session cache).
                 */
                NewSessionTicket sessionTicket;
            } locked;
        } ssl3;
    } u;
};

struct ssl3CipherSuiteDefStr {
    ssl3CipherSuite cipher_suite;
    SSL3BulkCipher bulk_cipher_alg;
    SSL3MACAlgorithm mac_alg;
    SSL3KeyExchangeAlgorithm key_exchange_alg;
    SSLHashType prf_hash;
};

/*
** There are tables of these, all const.
*/
typedef struct {
    /* An identifier for this struct. */
    SSL3KeyExchangeAlgorithm kea;
    /* The type of key exchange used by the cipher suite. */
    SSLKEAType exchKeyType;
    /* If the cipher suite uses a signature, the type of key used in the
     * signature. */
    KeyType signKeyType;
    /* In most cases, cipher suites depend on their signature type for
     * authentication, ECDH certificates being the exception. */
    SSLAuthType authKeyType;
    /* True if the key exchange for the suite is ephemeral.  Or to be more
     * precise: true if the ServerKeyExchange message is always required. */
    PRBool ephemeral;
    /* An OID describing the key exchange */
    SECOidTag oid;
} ssl3KEADef;

typedef enum {
    ssl_0rtt_none,     /* 0-RTT not present */
    ssl_0rtt_sent,     /* 0-RTT sent (no decision yet) */
    ssl_0rtt_accepted, /* 0-RTT sent and accepted */
    ssl_0rtt_ignored,  /* 0-RTT sent but rejected/ignored */
    ssl_0rtt_done      /* 0-RTT accepted, but finished */
} sslZeroRttState;

typedef enum {
    ssl_0rtt_ignore_none,  /* not ignoring */
    ssl_0rtt_ignore_trial, /* ignoring with trial decryption */
    ssl_0rtt_ignore_hrr    /* ignoring until ClientHello (due to HRR) */
} sslZeroRttIgnore;

typedef enum {
    idle_handshake,
    wait_client_hello,
    wait_end_of_early_data,
    wait_client_cert,
    wait_client_key,
    wait_cert_verify,
    wait_change_cipher,
    wait_finished,
    wait_server_hello,
    wait_certificate_status,
    wait_server_cert,
    wait_server_key,
    wait_cert_request,
    wait_hello_done,
    wait_new_session_ticket,
    wait_encrypted_extensions,
    wait_invalid /* Invalid value. There is no handshake message "invalid". */
} SSL3WaitState;

typedef enum {
    client_hello_initial,      /* The first attempt. */
    client_hello_retry,        /* If we receive HelloRetryRequest. */
    client_hello_retransmit,   /* In DTLS, if we receive HelloVerifyRequest. */
    client_hello_renegotiation /* A renegotiation attempt. */
} sslClientHelloType;

typedef struct SessionTicketDataStr SessionTicketData;

typedef SECStatus (*sslRestartTarget)(sslSocket *);

/*
** A DTLS queued message (potentially to be retransmitted)
*/
typedef struct DTLSQueuedMessageStr {
    PRCList link;           /* The linked list link */
    ssl3CipherSpec *cwSpec; /* The cipher spec to use, null for none */
    SSL3ContentType type;   /* The message type */
    unsigned char *data;    /* The data */
    PRUint16 len;           /* The data length */
} DTLSQueuedMessage;

typedef struct TLS13KeyShareEntryStr {
    PRCList link;                  /* The linked list link */
    const sslNamedGroupDef *group; /* The group for the entry */
    SECItem key_exchange;          /* The share itself */
} TLS13KeyShareEntry;

typedef struct TLS13EarlyDataStr {
    PRCList link; /* The linked list link */
    SECItem data; /* The data */
} TLS13EarlyData;

typedef enum {
    handshake_hash_unknown = 0,
    handshake_hash_combo = 1,  /* The MD5/SHA-1 combination */
    handshake_hash_single = 2, /* A single hash */
    handshake_hash_record
} SSL3HandshakeHashType;

// A DTLS Timer.
typedef void (*DTLSTimerCb)(sslSocket *);

typedef struct {
    const char *label;
    DTLSTimerCb cb;
    PRIntervalTime started;
    PRUint32 timeout;
} dtlsTimer;

/*
** This is the "hs" member of the "ssl3" struct.
** This entire struct is protected by ssl3HandshakeLock
*/
typedef struct SSL3HandshakeStateStr {
    SSL3Random server_random;
    SSL3Random client_random;
    SSL3WaitState ws; /* May also contain SSL3WaitState | 0x80 for TLS 1.3 */

    /* This group of members is used for handshake running hashes. */
    SSL3HandshakeHashType hashType;
    sslBuffer messages; /* Accumulated handshake messages */
    /* PKCS #11 mode:
     * SSL 3.0 - TLS 1.1 use both |md5| and |sha|. |md5| is used for MD5 and
     * |sha| for SHA-1.
     * TLS 1.2 and later use only |sha|, for SHA-256. */
    PK11Context *md5;
    PK11Context *sha;
    SSLSignatureScheme signatureScheme;
    const ssl3KEADef *kea_def;
    ssl3CipherSuite cipher_suite;
    const ssl3CipherSuiteDef *suite_def;
    sslBuffer msg_body; /* protected by recvBufLock */
                        /* partial handshake message from record layer */
    unsigned int header_bytes;
    /* number of bytes consumed from handshake */
    /* message for message type and header length */
    SSLHandshakeType msg_type;
    unsigned long msg_len;
    PRBool isResuming;  /* we are resuming (not used in TLS 1.3) */
    PRBool sendingSCSV; /* instead of empty RI */
    sslBuffer msgState; /* current state for handshake messages*/
                        /* protected by recvBufLock */

    /* The session ticket received in a NewSessionTicket message is temporarily
     * stored in newSessionTicket until the handshake is finished; then it is
     * moved to the sid.
     */
    PRBool receivedNewSessionTicket;
    NewSessionTicket newSessionTicket;

    PRUint16 finishedBytes; /* size of single finished below */
    union {
        TLSFinished tFinished[2]; /* client, then server */
        SSL3Finished sFinished[2];
        PRUint8 data[72];
    } finishedMsgs;

    PRBool authCertificatePending;
    /* Which function should SSL_RestartHandshake* call if we're blocked?
     * One of NULL, ssl3_SendClientSecondRound, ssl3_FinishHandshake,
     * or ssl3_AlwaysFail */
    sslRestartTarget restartTarget;
    /* Shared state between ssl3_HandleFinished and ssl3_FinishHandshake */
    PRBool cacheSID;

    PRBool canFalseStart; /* Can/did we False Start */
    /* Which preliminaryinfo values have been set. */
    PRUint32 preliminaryInfo;

    /* Parsed extensions */
    PRCList remoteExtensions; /* Parsed incoming extensions */

    /* This group of values is used for DTLS */
    PRUint16 sendMessageSeq;   /* The sending message sequence
                                    * number */
    PRCList lastMessageFlight; /* The last message flight we
                                    * sent */
    PRUint16 maxMessageSent;   /* The largest message we sent */
    PRUint16 recvMessageSeq;   /* The receiving message sequence
                                    * number */
    sslBuffer recvdFragments;  /* The fragments we have received in
                                    * a bitmask */
    PRInt32 recvdHighWater;    /* The high water mark for fragments
                                    * received. -1 means no reassembly
                                    * in progress. */
    SECItem cookie;            /* The Hello(Retry|Verify)Request cookie. */
    dtlsTimer timers[3];       /* Holder for timers. */
    dtlsTimer *rtTimer;        /* Retransmit timer. */
    dtlsTimer *ackTimer;       /* Ack timer (DTLS 1.3 only). */
    dtlsTimer *hdTimer;        /* Read cipher holddown timer (DLTS 1.3 only) */
    PRUint32 rtRetries;        /* The retry counter */
    SECItem srvVirtName;       /* for server: name that was negotiated
                                    * with a client. For client - is
                                    * always set to NULL.*/

    /* This group of values is used for TLS 1.3 and above */
    PK11SymKey *currentSecret;            /* The secret down the "left hand side"
                                           * of the TLS 1.3 key schedule. */
    PK11SymKey *resumptionMasterSecret;   /* The resumption PSK. */
    PK11SymKey *dheSecret;                /* The (EC)DHE shared secret. */
    PK11SymKey *pskBinderKey;             /* Used to compute the PSK binder. */
    PK11SymKey *clientEarlyTrafficSecret; /* The secret we use for 0-RTT. */
    PK11SymKey *clientHsTrafficSecret;    /* The source keys for handshake */
    PK11SymKey *serverHsTrafficSecret;    /* traffic keys. */
    PK11SymKey *clientTrafficSecret;      /* The source keys for application */
    PK11SymKey *serverTrafficSecret;      /* traffic keys */
    PK11SymKey *earlyExporterSecret;      /* for 0-RTT exporters */
    PK11SymKey *exporterSecret;           /* for exporters */
    PRCList cipherSpecs;                  /* The cipher specs in the sequence they
                                           * will be applied. */
    sslZeroRttState zeroRttState;         /* Are we doing a 0-RTT handshake? */
    sslZeroRttIgnore zeroRttIgnore;       /* Are we ignoring 0-RTT? */
    ssl3CipherSuite zeroRttSuite;         /* The cipher suite we used for 0-RTT. */
    PRCList bufferedEarlyData;            /* Buffered TLS 1.3 early data
                                           * on server.*/
    PRBool helloRetry;                    /* True if HelloRetryRequest has been sent
                                           * or received. */
    PRBool receivedCcs;                   /* A server received ChangeCipherSpec
                                           * before the handshake started. */
    PRBool clientCertRequested;           /* True if CertificateRequest received. */
    ssl3KEADef kea_def_mutable;           /* Used to hold the writable kea_def
                                           * we use for TLS 1.3 */
    PRTime serverHelloTime;               /* Time the ServerHello flight was sent. */
    PRUint16 ticketNonce;                 /* A counter we use for tickets. */
    SECItem fakeSid;                      /* ... (server) the SID the client used. */
    PRBool endOfFlight;                   /* Processed a full flight (DTLS 1.3). */

    /* The following lists contain DTLSHandshakeRecordEntry */
    PRCList dtlsSentHandshake; /* Used to map records to handshake fragments. */
    PRCList dtlsRcvdHandshake; /* Handshake records we have received
                                * used to generate ACKs. */
} SSL3HandshakeState;

#define SSL_ASSERT_HASHES_EMPTY(ss)                                  \
    do {                                                             \
        PORT_Assert(ss->ssl3.hs.hashType == handshake_hash_unknown); \
        PORT_Assert(ss->ssl3.hs.messages.len == 0);                  \
    } while (0)

/*
** This is the "ssl3" struct, as in "ss->ssl3".
** note:
** usually,   crSpec == cwSpec and prSpec == pwSpec.
** Sometimes, crSpec == pwSpec and prSpec == cwSpec.
** But there are never more than 2 actual specs.
** No spec must ever be modified if either "current" pointer points to it.
*/
struct ssl3StateStr {

    /*
    ** The following Specs and Spec pointers must be protected using the
    ** Spec Lock.
    */
    ssl3CipherSpec *crSpec; /* current read spec. */
    ssl3CipherSpec *prSpec; /* pending read spec. */
    ssl3CipherSpec *cwSpec; /* current write spec. */
    ssl3CipherSpec *pwSpec; /* pending write spec. */

    /* This is true after the peer requests a key update; false after a key
     * update is initiated locally. */
    PRBool peerRequestedKeyUpdate;

    /* Internal callback for when we do a cipher suite change. Used for
     * debugging in TLS 1.3. This can only be set by non-public functions. */
    sslCipherSpecChangedFunc changedCipherSpecFunc;
    void *changedCipherSpecArg;

    CERTCertificate *clientCertificate;   /* used by client */
    SECKEYPrivateKey *clientPrivateKey;   /* used by client */
    CERTCertificateList *clientCertChain; /* used by client */
    PRBool sendEmptyCert;                 /* used by client */

    int policy;
    /* This says what cipher suites we can do, and should
     * be either SSL_ALLOWED or SSL_RESTRICTED
     */
    PLArenaPool *peerCertArena;
    /* These are used to keep track of the peer CA */
    void *peerCertChain;
    /* chain while we are trying to validate it.   */
    CERTDistNames *ca_list;
    /* used by server.  trusted CAs for this socket. */
    SSL3HandshakeState hs;

    PRUint16 mtu; /* Our estimate of the MTU */

    /* DTLS-SRTP cipher suite preferences (if any) */
    PRUint16 dtlsSRTPCiphers[MAX_DTLS_SRTP_CIPHER_SUITES];
    PRUint16 dtlsSRTPCipherCount;
    PRBool fatalAlertSent;
    PRBool dheWeakGroupEnabled; /* used by server */
    const sslNamedGroupDef *dhePreferredGroup;

    /* TLS 1.2 introduces separate signature algorithm negotiation.
     * TLS 1.3 combined signature and hash into a single enum.
     * This is our preference order. */
    SSLSignatureScheme signatureSchemes[MAX_SIGNATURE_SCHEMES];
    unsigned int signatureSchemeCount;

    /* The version to check if we fell back from our highest version
     * of TLS. Default is 0 in which case we check against the maximum
     * configured version for this socket. Used only on the client. */
    SSL3ProtocolVersion downgradeCheckVersion;
};

/* Ethernet MTU but without subtracting the headers,
 * so slightly larger than expected */
#define DTLS_MAX_MTU 1500U
#define IS_DTLS(ss) (ss->protocolVariant == ssl_variant_datagram)

typedef struct {
    SSL3ContentType type;
    SSL3ProtocolVersion version;
    sslSequenceNumber seq_num; /* DTLS only */
    sslBuffer *buf;
} SSL3Ciphertext;

struct sslKeyPairStr {
    SECKEYPrivateKey *privKey;
    SECKEYPublicKey *pubKey;
    PRInt32 refCount; /* use PR_Atomic calls for this. */
};

typedef struct {
    PRCList link;
    const sslNamedGroupDef *group;
    sslKeyPair *keys;
} sslEphemeralKeyPair;

struct ssl3DHParamsStr {
    SSLNamedGroup name;
    SECItem prime; /* p */
    SECItem base;  /* g */
};

typedef struct SSLWrappedSymWrappingKeyStr {
    PRUint8 wrappedSymmetricWrappingkey[512];
    CK_MECHANISM_TYPE symWrapMechanism;
    /* unwrapped symmetric wrapping key uses this mechanism */
    CK_MECHANISM_TYPE asymWrapMechanism;
    /* mechanism used to wrap the SymmetricWrappingKey using
     * server's public and/or private keys. */
    PRInt16 wrapMechIndex;
    PRUint16 wrapKeyIndex;
    PRUint16 wrappedSymKeyLen;
} SSLWrappedSymWrappingKey;

typedef struct SessionTicketStr {
    PRBool valid;
    SSL3ProtocolVersion ssl_version;
    ssl3CipherSuite cipher_suite;
    SSLAuthType authType;
    PRUint32 authKeyBits;
    SSLKEAType keaType;
    PRUint32 keaKeyBits;
    SSLNamedGroup originalKeaGroup;
    SSLSignatureScheme signatureScheme;
    const sslNamedGroupDef *namedCurve; /* For certificate lookup. */

    /*
     * msWrapMech contains a meaningful value only if ms_is_wrapped is true.
     */
    PRUint8 ms_is_wrapped;
    CK_MECHANISM_TYPE msWrapMech;
    PRUint16 ms_length;
    PRUint8 master_secret[48];
    PRBool extendedMasterSecretUsed;
    ClientAuthenticationType client_auth_type;
    SECItem peer_cert;
    PRTime timestamp;
    PRUint32 flags;
    SECItem srvName; /* negotiated server name */
    SECItem alpnSelection;
    PRUint32 maxEarlyData;
    PRUint32 ticketAgeBaseline;
    SECItem applicationToken;
} SessionTicket;

/*
 * SSL2 buffers used in SSL3.
 *     writeBuf in the SecurityInfo maintained by sslsecur.c is used
 *              to hold the data just about to be passed to the kernel
 *     sendBuf in the ConnectInfo maintained by sslcon.c is used
 *              to hold handshake messages as they are accumulated
 */

/*
** This is "ci", as in "ss->sec.ci".
**
** Protection:  All the variables in here are protected by
** firstHandshakeLock AND ssl3HandshakeLock
*/
struct sslConnectInfoStr {
    /* outgoing handshakes appended to this. */
    sslBuffer sendBuf; /*xmitBufLock*/

    PRIPv6Addr peer;
    unsigned short port;

    sslSessionID *sid;
};

/* Note: The entire content of this struct and whatever it points to gets
 * blown away by SSL_ResetHandshake().  This is "sec" as in "ss->sec".
 *
 * Unless otherwise specified below, the contents of this struct are
 * protected by firstHandshakeLock AND ssl3HandshakeLock.
 */
struct sslSecurityInfoStr {

#define SSL_ROLE(ss) (ss->sec.isServer ? "server" : "client")

    PRBool isServer;
    sslBuffer writeBuf; /*xmitBufLock*/

    CERTCertificate *localCert;
    CERTCertificate *peerCert;
    SECKEYPublicKey *peerKey;

    SSLAuthType authType;
    PRUint32 authKeyBits;
    SSLSignatureScheme signatureScheme;
    SSLKEAType keaType;
    PRUint32 keaKeyBits;
    const sslNamedGroupDef *keaGroup;
    const sslNamedGroupDef *originalKeaGroup;
    /* The selected certificate (for servers only). */
    const sslServerCert *serverCert;

    /*
    ** Procs used for SID cache (nonce) management.
    ** Different implementations exist for clients/servers
    ** The lookup proc is only used for servers.  Baloney!
    */
    sslSessionIDCacheFunc cache;
    sslSessionIDUncacheFunc uncache;

    /* These are used during a connection handshake */
    sslConnectInfo ci;
};

/*
** SSL Socket struct
**
** Protection:  XXX
*/
struct sslSocketStr {
    PRFileDesc *fd;

    /* Pointer to operations vector for this socket */
    const sslSocketOps *ops;

    /* SSL socket options */
    sslOptions opt;
    /* Enabled version range */
    SSLVersionRange vrange;

    /* State flags */
    unsigned long clientAuthRequested;
    unsigned long delayDisabled;     /* Nagle delay disabled */
    unsigned long firstHsDone;       /* first handshake is complete. */
    unsigned long enoughFirstHsDone; /* enough of the first handshake is
                                      * done for callbacks to be able to
                                      * retrieve channel security
                                      * parameters from the SSL socket. */
    unsigned long handshakeBegun;
    unsigned long lastWriteBlocked;
    unsigned long recvdCloseNotify; /* received SSL EOF. */
    unsigned long TCPconnected;
    unsigned long appDataBuffered;
    unsigned long peerRequestedProtection; /* from old renegotiation */

    /* version of the protocol to use */
    SSL3ProtocolVersion version;
    SSL3ProtocolVersion clientHelloVersion; /* version sent in client hello. */

    sslSecurityInfo sec; /* not a pointer any more */

    /* protected by firstHandshakeLock AND ssl3HandshakeLock. */
    const char *url;

    sslHandshakeFunc handshake; /*firstHandshakeLock*/

    /* the following variable is only used with socks or other proxies. */
    char *peerID; /* String uniquely identifies target server. */

    /* ECDHE and DHE keys: In TLS 1.3, we might have to maintain multiple of
     * these on the client side.  The server inserts a single value into this
     * list for all versions. */
    PRCList /*<sslEphemeralKeyPair>*/ ephemeralKeyPairs;

    /* Callbacks */
    SSLAuthCertificate authCertificate;
    void *authCertificateArg;
    SSLGetClientAuthData getClientAuthData;
    void *getClientAuthDataArg;
    SSLSNISocketConfig sniSocketConfig;
    void *sniSocketConfigArg;
    SSLAlertCallback alertReceivedCallback;
    void *alertReceivedCallbackArg;
    SSLAlertCallback alertSentCallback;
    void *alertSentCallbackArg;
    SSLBadCertHandler handleBadCert;
    void *badCertArg;
    SSLHandshakeCallback handshakeCallback;
    void *handshakeCallbackData;
    SSLCanFalseStartCallback canFalseStartCallback;
    void *canFalseStartCallbackData;
    void *pkcs11PinArg;
    SSLNextProtoCallback nextProtoCallback;
    void *nextProtoArg;
    SSLHelloRetryRequestCallback hrrCallback;
    void *hrrCallbackArg;
    PRCList extensionHooks;

    PRIntervalTime rTimeout; /* timeout for NSPR I/O */
    PRIntervalTime wTimeout; /* timeout for NSPR I/O */
    PRIntervalTime cTimeout; /* timeout for NSPR I/O */

    PZLock *recvLock; /* lock against multiple reader threads. */
    PZLock *sendLock; /* lock against multiple sender threads. */

    PZMonitor *recvBufLock; /* locks low level recv buffers. */
    PZMonitor *xmitBufLock; /* locks low level xmit buffers. */

    /* Only one thread may operate on the socket until the initial handshake
    ** is complete.  This Monitor ensures that.  Since SSL2 handshake is
    ** only done once, this is also effectively the SSL2 handshake lock.
    */
    PZMonitor *firstHandshakeLock;

    /* This monitor protects the ssl3 handshake state machine data.
    ** Only one thread (reader or writer) may be in the ssl3 handshake state
    ** machine at any time.  */
    PZMonitor *ssl3HandshakeLock;

    /* reader/writer lock, protects the secret data needed to encrypt and MAC
    ** outgoing records, and to decrypt and MAC check incoming ciphertext
    ** records.  */
    NSSRWLock *specLock;

    /* handle to perm cert db (and implicitly to the temp cert db) used
    ** with this socket.
    */
    CERTCertDBHandle *dbHandle;

    PRThread *writerThread; /* thread holds SSL_LOCK_WRITER lock */

    PRUint16 shutdownHow; /* See ssl_SHUTDOWN defines below. */

    sslHandshakingType handshaking;

    /* Gather object used for gathering data */
    sslGather gs; /*recvBufLock*/

    sslBuffer saveBuf;    /*xmitBufLock*/
    sslBuffer pendingBuf; /*xmitBufLock*/

    /* Configuration state for server sockets */
    /* One server cert and key for each authentication type. */
    PRCList /* <sslServerCert> */ serverCerts;

    ssl3CipherSuiteCfg cipherSuites[ssl_V3_SUITES_IMPLEMENTED];

    /* A list of groups that are sorted according to user preferences pointing
     * to entries of ssl_named_groups. By default this list contains pointers
     * to all elements in ssl_named_groups in the default order.
     * This list also determines which groups are enabled. This
     * starts with all being enabled and can be modified either by negotiation
     * (in which case groups not supported by a peer are masked off), or by
     * calling SSL_DHEGroupPrefSet().
     * Note that renegotiation will ignore groups that were disabled in the
     * first handshake.
     */
    const sslNamedGroupDef *namedGroupPreferences[SSL_NAMED_GROUP_COUNT];
    /* The number of additional shares to generate for the TLS 1.3 ClientHello */
    unsigned int additionalShares;

    /* SSL3 state info.  Formerly was a pointer */
    ssl3State ssl3;

    /*
     * TLS extension related data.
     */
    /* True when the current session is a stateless resume. */
    PRBool statelessResume;
    TLSExtensionData xtnData;

    /* Whether we are doing stream or datagram mode */
    SSLProtocolVariant protocolVariant;
};

struct sslSelfEncryptKeysStr {
    PRCallOnceType setup;
    PRUint8 keyName[SELF_ENCRYPT_KEY_NAME_LEN];
    PK11SymKey *encKey;
    PK11SymKey *macKey;
};
typedef struct sslSelfEncryptKeysStr sslSelfEncryptKeys;

extern char ssl_debug;
extern char ssl_trace;
extern FILE *ssl_trace_iob;
extern FILE *ssl_keylog_iob;
extern PZLock *ssl_keylog_lock;
extern PRUint32 ssl3_sid_timeout;
extern PRUint32 ssl_ticket_lifetime;
extern PRUint32 ssl_max_early_data_size;

extern const char *const ssl3_cipherName[];

extern sslSessionIDLookupFunc ssl_sid_lookup;
extern sslSessionIDCacheFunc ssl_sid_cache;
extern sslSessionIDUncacheFunc ssl_sid_uncache;

extern const sslNamedGroupDef ssl_named_groups[];

/************************************************************************/

SEC_BEGIN_PROTOS

/* Internal initialization and installation of the SSL error tables */
extern SECStatus ssl_Init(void);
extern SECStatus ssl_InitializePRErrorTable(void);

/* Implementation of ops for default (non socks, non secure) case */
extern int ssl_DefConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_DefAccept(sslSocket *ss, PRNetAddr *addr);
extern int ssl_DefBind(sslSocket *ss, const PRNetAddr *addr);
extern int ssl_DefListen(sslSocket *ss, int backlog);
extern int ssl_DefShutdown(sslSocket *ss, int how);
extern int ssl_DefClose(sslSocket *ss);
extern int ssl_DefRecv(sslSocket *ss, unsigned char *buf, int len, int flags);
extern int ssl_DefSend(sslSocket *ss, const unsigned char *buf,
                       int len, int flags);
extern int ssl_DefRead(sslSocket *ss, unsigned char *buf, int len);
extern int ssl_DefWrite(sslSocket *ss, const unsigned char *buf, int len);
extern int ssl_DefGetpeername(sslSocket *ss, PRNetAddr *name);
extern int ssl_DefGetsockname(sslSocket *ss, PRNetAddr *name);
extern int ssl_DefGetsockopt(sslSocket *ss, PRSockOption optname,
                             void *optval, PRInt32 *optlen);
extern int ssl_DefSetsockopt(sslSocket *ss, PRSockOption optname,
                             const void *optval, PRInt32 optlen);

/* Implementation of ops for socks only case */
extern int ssl_SocksConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_SocksAccept(sslSocket *ss, PRNetAddr *addr);
extern int ssl_SocksBind(sslSocket *ss, const PRNetAddr *addr);
extern int ssl_SocksListen(sslSocket *ss, int backlog);
extern int ssl_SocksGetsockname(sslSocket *ss, PRNetAddr *name);
extern int ssl_SocksRecv(sslSocket *ss, unsigned char *buf, int len, int flags);
extern int ssl_SocksSend(sslSocket *ss, const unsigned char *buf,
                         int len, int flags);
extern int ssl_SocksRead(sslSocket *ss, unsigned char *buf, int len);
extern int ssl_SocksWrite(sslSocket *ss, const unsigned char *buf, int len);

/* Implementation of ops for secure only case */
extern int ssl_SecureConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_SecureAccept(sslSocket *ss, PRNetAddr *addr);
extern int ssl_SecureRecv(sslSocket *ss, unsigned char *buf,
                          int len, int flags);
extern int ssl_SecureSend(sslSocket *ss, const unsigned char *buf,
                          int len, int flags);
extern int ssl_SecureRead(sslSocket *ss, unsigned char *buf, int len);
extern int ssl_SecureWrite(sslSocket *ss, const unsigned char *buf, int len);
extern int ssl_SecureShutdown(sslSocket *ss, int how);
extern int ssl_SecureClose(sslSocket *ss);

/* Implementation of ops for secure socks case */
extern int ssl_SecureSocksConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_SecureSocksAccept(sslSocket *ss, PRNetAddr *addr);
extern PRFileDesc *ssl_FindTop(sslSocket *ss);

/* Gather funcs. */
extern sslGather *ssl_NewGather(void);
extern SECStatus ssl3_InitGather(sslGather *gs);
extern void ssl3_DestroyGather(sslGather *gs);
extern SECStatus ssl_GatherRecord1stHandshake(sslSocket *ss);

extern SECStatus ssl_CreateSecurityInfo(sslSocket *ss);
extern SECStatus ssl_CopySecurityInfo(sslSocket *ss, sslSocket *os);
extern void ssl_ResetSecurityInfo(sslSecurityInfo *sec, PRBool doMemset);
extern void ssl_DestroySecurityInfo(sslSecurityInfo *sec);

extern void ssl_PrintBuf(const sslSocket *ss, const char *msg, const void *cp,
                         int len);
extern void ssl_PrintKey(const sslSocket *ss, const char *msg, PK11SymKey *key);

extern int ssl_SendSavedWriteData(sslSocket *ss);
extern SECStatus ssl_SaveWriteData(sslSocket *ss,
                                   const void *p, unsigned int l);
extern SECStatus ssl_BeginClientHandshake(sslSocket *ss);
extern SECStatus ssl_BeginServerHandshake(sslSocket *ss);
extern int ssl_Do1stHandshake(sslSocket *ss);

extern void ssl_ChooseSessionIDProcs(sslSecurityInfo *sec);

extern SECStatus ssl3_InitPendingCipherSpecs(sslSocket *ss, PK11SymKey *secret,
                                             PRBool derive);
extern sslSessionID *ssl3_NewSessionID(sslSocket *ss, PRBool is_server);
extern sslSessionID *ssl_LookupSID(const PRIPv6Addr *addr, PRUint16 port,
                                   const char *peerID, const char *urlSvrName);
extern void ssl_FreeSID(sslSessionID *sid);

extern int ssl3_SendApplicationData(sslSocket *ss, const PRUint8 *in,
                                    int len, int flags);

extern PRBool ssl_FdIsBlocking(PRFileDesc *fd);

extern PRBool ssl_SocketIsBlocking(sslSocket *ss);

extern void ssl3_SetAlwaysBlock(sslSocket *ss);

extern SECStatus ssl_EnableNagleDelay(sslSocket *ss, PRBool enabled);

extern void ssl_FinishHandshake(sslSocket *ss);

extern SECStatus ssl_CipherPolicySet(PRInt32 which, PRInt32 policy);

extern SECStatus ssl_CipherPrefSetDefault(PRInt32 which, PRBool enabled);

extern SECStatus ssl3_ConstrainRangeByPolicy(void);

extern SECStatus ssl3_InitState(sslSocket *ss);
extern SECStatus Null_Cipher(void *ctx, unsigned char *output, int *outputLen,
                             int maxOutputLen, const unsigned char *input,
                             int inputLen);
extern void ssl3_RestartHandshakeHashes(sslSocket *ss);
extern SECStatus ssl3_UpdateHandshakeHashes(sslSocket *ss,
                                            const unsigned char *b,
                                            unsigned int l);
SECStatus
ssl_HashHandshakeMessageInt(sslSocket *ss, SSLHandshakeType type,
                            PRUint32 dtlsSeq,
                            const PRUint8 *b, PRUint32 length);
SECStatus ssl_HashHandshakeMessage(sslSocket *ss, SSLHandshakeType type,
                                   const PRUint8 *b, PRUint32 length);

/* Returns PR_TRUE if we are still waiting for the server to complete its
 * response to our client second round. Once we've received the Finished from
 * the server then there is no need to check false start.
 */
extern PRBool ssl3_WaitingForServerSecondRound(sslSocket *ss);

extern PRInt32 ssl3_SendRecord(sslSocket *ss, ssl3CipherSpec *cwSpec,
                               SSL3ContentType type,
                               const PRUint8 *pIn, PRInt32 nIn,
                               PRInt32 flags);

/* Clear any PRCList, optionally calling f on the value. */
void ssl_ClearPRCList(PRCList *list, void (*f)(void *));

/*
 * Make sure there is room in the write buffer for padding and
 * cryptographic expansions.
 */
#define SSL3_BUFFER_FUDGE 100

#define SSL_LOCK_READER(ss) \
    if (ss->recvLock)       \
    PZ_Lock(ss->recvLock)
#define SSL_UNLOCK_READER(ss) \
    if (ss->recvLock)         \
    PZ_Unlock(ss->recvLock)
#define SSL_LOCK_WRITER(ss) \
    if (ss->sendLock)       \
    PZ_Lock(ss->sendLock)
#define SSL_UNLOCK_WRITER(ss) \
    if (ss->sendLock)         \
    PZ_Unlock(ss->sendLock)

/* firstHandshakeLock -> recvBufLock */
#define ssl_Get1stHandshakeLock(ss)                               \
    {                                                             \
        if (!ss->opt.noLocks) {                                   \
            PORT_Assert(PZ_InMonitor((ss)->firstHandshakeLock) || \
                        !ssl_HaveRecvBufLock(ss));                \
            PZ_EnterMonitor((ss)->firstHandshakeLock);            \
        }                                                         \
    }
#define ssl_Release1stHandshakeLock(ss)               \
    {                                                 \
        if (!ss->opt.noLocks)                         \
            PZ_ExitMonitor((ss)->firstHandshakeLock); \
    }
#define ssl_Have1stHandshakeLock(ss) \
    (PZ_InMonitor((ss)->firstHandshakeLock))

/* ssl3HandshakeLock -> xmitBufLock */
#define ssl_GetSSL3HandshakeLock(ss)                  \
    {                                                 \
        if (!ss->opt.noLocks) {                       \
            PORT_Assert(!ssl_HaveXmitBufLock(ss));    \
            PZ_EnterMonitor((ss)->ssl3HandshakeLock); \
        }                                             \
    }
#define ssl_ReleaseSSL3HandshakeLock(ss)             \
    {                                                \
        if (!ss->opt.noLocks)                        \
            PZ_ExitMonitor((ss)->ssl3HandshakeLock); \
    }
#define ssl_HaveSSL3HandshakeLock(ss) \
    (PZ_InMonitor((ss)->ssl3HandshakeLock))

#define ssl_GetSpecReadLock(ss)                 \
    {                                           \
        if (!ss->opt.noLocks)                   \
            NSSRWLock_LockRead((ss)->specLock); \
    }
#define ssl_ReleaseSpecReadLock(ss)               \
    {                                             \
        if (!ss->opt.noLocks)                     \
            NSSRWLock_UnlockRead((ss)->specLock); \
    }
/* NSSRWLock_HaveReadLock is not exported so there's no
 * ssl_HaveSpecReadLock macro. */

#define ssl_GetSpecWriteLock(ss)                 \
    {                                            \
        if (!ss->opt.noLocks)                    \
            NSSRWLock_LockWrite((ss)->specLock); \
    }
#define ssl_ReleaseSpecWriteLock(ss)               \
    {                                              \
        if (!ss->opt.noLocks)                      \
            NSSRWLock_UnlockWrite((ss)->specLock); \
    }
#define ssl_HaveSpecWriteLock(ss) \
    (NSSRWLock_HaveWriteLock((ss)->specLock))

/* recvBufLock -> ssl3HandshakeLock -> xmitBufLock */
#define ssl_GetRecvBufLock(ss)                           \
    {                                                    \
        if (!ss->opt.noLocks) {                          \
            PORT_Assert(!ssl_HaveSSL3HandshakeLock(ss)); \
            PORT_Assert(!ssl_HaveXmitBufLock(ss));       \
            PZ_EnterMonitor((ss)->recvBufLock);          \
        }                                                \
    }
#define ssl_ReleaseRecvBufLock(ss)             \
    {                                          \
        if (!ss->opt.noLocks)                  \
            PZ_ExitMonitor((ss)->recvBufLock); \
    }
#define ssl_HaveRecvBufLock(ss) \
    (PZ_InMonitor((ss)->recvBufLock))

/* xmitBufLock -> specLock */
#define ssl_GetXmitBufLock(ss)                  \
    {                                           \
        if (!ss->opt.noLocks)                   \
            PZ_EnterMonitor((ss)->xmitBufLock); \
    }
#define ssl_ReleaseXmitBufLock(ss)             \
    {                                          \
        if (!ss->opt.noLocks)                  \
            PZ_ExitMonitor((ss)->xmitBufLock); \
    }
#define ssl_HaveXmitBufLock(ss) \
    (PZ_InMonitor((ss)->xmitBufLock))

/* Placeholder value used in version ranges when SSL 3.0 and all
 * versions of TLS are disabled.
 */
#define SSL_LIBRARY_VERSION_NONE 0

/* SSL_LIBRARY_VERSION_MIN_SUPPORTED is the minimum version that this version
 * of libssl supports. Applications should use SSL_VersionRangeGetSupported at
 * runtime to determine which versions are supported by the version of libssl
 * in use.
 */
#define SSL_LIBRARY_VERSION_MIN_SUPPORTED_DATAGRAM SSL_LIBRARY_VERSION_TLS_1_1
#define SSL_LIBRARY_VERSION_MIN_SUPPORTED_STREAM SSL_LIBRARY_VERSION_3_0

/* SSL_LIBRARY_VERSION_MAX_SUPPORTED is the maximum version that this version
 * of libssl supports. Applications should use SSL_VersionRangeGetSupported at
 * runtime to determine which versions are supported by the version of libssl
 * in use.
 */
#ifndef NSS_DISABLE_TLS_1_3
#define SSL_LIBRARY_VERSION_MAX_SUPPORTED SSL_LIBRARY_VERSION_TLS_1_3
#else
#define SSL_LIBRARY_VERSION_MAX_SUPPORTED SSL_LIBRARY_VERSION_TLS_1_2
#endif

#define SSL_ALL_VERSIONS_DISABLED(vrange) \
    ((vrange)->min == SSL_LIBRARY_VERSION_NONE)

extern PRBool ssl3_VersionIsSupported(SSLProtocolVariant protocolVariant,
                                      SSL3ProtocolVersion version);

/* These functions are called from secnav, even though they're "private". */

extern int SSL_RestartHandshakeAfterCertReq(struct sslSocketStr *ss,
                                            CERTCertificate *cert,
                                            SECKEYPrivateKey *key,
                                            CERTCertificateList *certChain);
extern sslSocket *ssl_FindSocket(PRFileDesc *fd);
extern void ssl_FreeSocket(struct sslSocketStr *ssl);
extern SECStatus SSL3_SendAlert(sslSocket *ss, SSL3AlertLevel level,
                                SSL3AlertDescription desc);
extern SECStatus ssl3_DecodeError(sslSocket *ss);

extern SECStatus ssl3_AuthCertificateComplete(sslSocket *ss, PRErrorCode error);

/*
 * for dealing with SSL 3.0 clients sending SSL 2.0 format hellos
 */
extern SECStatus ssl3_HandleV2ClientHello(
    sslSocket *ss, unsigned char *buffer, unsigned int length, PRUint8 padding);

SECStatus ssl3_SendClientHello(sslSocket *ss, sslClientHelloType type);

/*
 * input into the SSL3 machinery from the actualy network reading code
 */
SECStatus ssl3_HandleRecord(
    sslSocket *ss, SSL3Ciphertext *cipher, sslBuffer *out);
SECStatus ssl_RemoveTLSCBCPadding(sslBuffer *plaintext, unsigned int macSize);

int ssl3_GatherAppDataRecord(sslSocket *ss, int flags);
int ssl3_GatherCompleteHandshake(sslSocket *ss, int flags);

/* Create a new ref counted key pair object from two keys. */
extern sslKeyPair *ssl_NewKeyPair(SECKEYPrivateKey *privKey,
                                  SECKEYPublicKey *pubKey);

/* get a new reference (bump ref count) to an ssl3KeyPair. */
extern sslKeyPair *ssl_GetKeyPairRef(sslKeyPair *keyPair);

/* Decrement keypair's ref count and free if zero. */
extern void ssl_FreeKeyPair(sslKeyPair *keyPair);

extern sslEphemeralKeyPair *ssl_NewEphemeralKeyPair(
    const sslNamedGroupDef *group,
    SECKEYPrivateKey *privKey, SECKEYPublicKey *pubKey);
extern sslEphemeralKeyPair *ssl_CopyEphemeralKeyPair(
    sslEphemeralKeyPair *keyPair);
extern void ssl_FreeEphemeralKeyPair(sslEphemeralKeyPair *keyPair);
extern sslEphemeralKeyPair *ssl_LookupEphemeralKeyPair(
    sslSocket *ss, const sslNamedGroupDef *groupDef);
extern PRBool ssl_HaveEphemeralKeyPair(const sslSocket *ss,
                                       const sslNamedGroupDef *groupDef);
extern void ssl_FreeEphemeralKeyPairs(sslSocket *ss);

extern SECStatus ssl_AppendPaddedDHKeyShare(sslBuffer *buf,
                                            const SECKEYPublicKey *pubKey,
                                            PRBool appendLength);
extern const ssl3DHParams *ssl_GetDHEParams(const sslNamedGroupDef *groupDef);
extern SECStatus ssl_SelectDHEGroup(sslSocket *ss,
                                    const sslNamedGroupDef **groupDef);
extern SECStatus ssl_CreateDHEKeyPair(const sslNamedGroupDef *groupDef,
                                      const ssl3DHParams *params,
                                      sslEphemeralKeyPair **keyPair);
extern PRBool ssl_IsValidDHEShare(const SECItem *dh_p, const SECItem *dh_Ys);
extern SECStatus ssl_ValidateDHENamedGroup(sslSocket *ss,
                                           const SECItem *dh_p,
                                           const SECItem *dh_g,
                                           const sslNamedGroupDef **groupDef,
                                           const ssl3DHParams **dhParams);

extern PRBool ssl_IsECCEnabled(const sslSocket *ss);
extern PRBool ssl_IsDHEEnabled(const sslSocket *ss);

/* Macro for finding a curve equivalent in strength to RSA key's */
#define SSL_RSASTRENGTH_TO_ECSTRENGTH(s)                            \
    ((s <= 1024) ? 160                                              \
                 : ((s <= 2048) ? 224                               \
                                : ((s <= 3072) ? 256                \
                                               : ((s <= 7168) ? 384 \
                                                              : 521))))

extern const sslNamedGroupDef *ssl_LookupNamedGroup(SSLNamedGroup group);
extern PRBool ssl_NamedGroupEnabled(const sslSocket *ss, const sslNamedGroupDef *group);
extern SECStatus ssl_NamedGroup2ECParams(PLArenaPool *arena,
                                         const sslNamedGroupDef *curve,
                                         SECKEYECParams *params);
extern const sslNamedGroupDef *ssl_ECPubKey2NamedGroup(
    const SECKEYPublicKey *pubKey);

extern const sslNamedGroupDef *ssl_GetECGroupForServerSocket(sslSocket *ss);
extern void ssl_FilterSupportedGroups(sslSocket *ss);

extern SECStatus ssl3_CipherPrefSetDefault(ssl3CipherSuite which, PRBool on);
extern SECStatus ssl3_CipherPrefGetDefault(ssl3CipherSuite which, PRBool *on);

extern SECStatus ssl3_CipherPrefSet(sslSocket *ss, ssl3CipherSuite which, PRBool on);
extern SECStatus ssl3_CipherPrefGet(const sslSocket *ss, ssl3CipherSuite which, PRBool *on);

extern SECStatus ssl3_SetPolicy(ssl3CipherSuite which, PRInt32 policy);
extern SECStatus ssl3_GetPolicy(ssl3CipherSuite which, PRInt32 *policy);

extern void ssl3_InitSocketPolicy(sslSocket *ss);

extern SECStatus ssl3_RedoHandshake(sslSocket *ss, PRBool flushCache);
extern SECStatus ssl3_HandleHandshakeMessage(sslSocket *ss, PRUint8 *b,
                                             PRUint32 length,
                                             PRBool endOfRecord);

extern void ssl3_DestroySSL3Info(sslSocket *ss);

extern SECStatus ssl_ClientReadVersion(sslSocket *ss, PRUint8 **b,
                                       PRUint32 *length,
                                       SSL3ProtocolVersion *version);
extern SECStatus ssl3_NegotiateVersion(sslSocket *ss,
                                       SSL3ProtocolVersion peerVersion,
                                       PRBool allowLargerPeerVersion);
extern SECStatus ssl_ClientSetCipherSuite(sslSocket *ss,
                                          SSL3ProtocolVersion version,
                                          ssl3CipherSuite suite,
                                          PRBool initHashes);

extern SECStatus ssl_GetPeerInfo(sslSocket *ss);

/* ECDH functions */
extern SECStatus ssl3_SendECDHClientKeyExchange(sslSocket *ss,
                                                SECKEYPublicKey *svrPubKey);
extern SECStatus ssl3_HandleECDHServerKeyExchange(sslSocket *ss,
                                                  PRUint8 *b, PRUint32 length);
extern SECStatus ssl3_HandleECDHClientKeyExchange(sslSocket *ss,
                                                  PRUint8 *b, PRUint32 length,
                                                  sslKeyPair *serverKeys);
extern SECStatus ssl3_SendECDHServerKeyExchange(sslSocket *ss);
extern SECStatus ssl_ImportECDHKeyShare(
    sslSocket *ss, SECKEYPublicKey *peerKey,
    PRUint8 *b, PRUint32 length, const sslNamedGroupDef *curve);

extern SECStatus ssl3_ComputeCommonKeyHash(SSLHashType hashAlg,
                                           PRUint8 *hashBuf,
                                           unsigned int bufLen,
                                           SSL3Hashes *hashes);
extern SECStatus ssl3_AppendSignatureAndHashAlgorithm(
    sslSocket *ss, const SSLSignatureAndHashAlg *sigAndHash);
extern SECStatus ssl3_ConsumeHandshake(sslSocket *ss, void *v, PRUint32 bytes,
                                       PRUint8 **b, PRUint32 *length);
extern SECStatus ssl3_ConsumeHandshakeNumber(sslSocket *ss, PRUint32 *num,
                                             PRUint32 bytes, PRUint8 **b,
                                             PRUint32 *length);
extern SECStatus ssl3_ConsumeHandshakeNumber64(sslSocket *ss, PRUint64 *num,
                                               PRUint32 bytes, PRUint8 **b,
                                               PRUint32 *length);
extern SECStatus ssl3_ConsumeHandshakeVariable(sslSocket *ss, SECItem *i,
                                               PRUint32 bytes, PRUint8 **b,
                                               PRUint32 *length);
extern PRBool ssl_IsSupportedSignatureScheme(SSLSignatureScheme scheme);
extern SECStatus ssl_CheckSignatureSchemeConsistency(
    sslSocket *ss, SSLSignatureScheme scheme, CERTCertificate *cert);
extern SECStatus ssl_ParseSignatureSchemes(const sslSocket *ss, PLArenaPool *arena,
                                           SSLSignatureScheme **schemesOut,
                                           unsigned int *numSchemesOut,
                                           unsigned char **b,
                                           unsigned int *len);
extern SECStatus ssl_ConsumeSignatureScheme(
    sslSocket *ss, PRUint8 **b, PRUint32 *length, SSLSignatureScheme *out);
extern SECStatus ssl3_SignHashes(sslSocket *ss, SSL3Hashes *hash,
                                 SECKEYPrivateKey *key, SECItem *buf);
extern SECStatus ssl3_VerifySignedHashes(sslSocket *ss, SSLSignatureScheme scheme,
                                         SSL3Hashes *hash, SECItem *buf);
extern SECStatus ssl3_CacheWrappedSecret(sslSocket *ss, sslSessionID *sid,
                                         PK11SymKey *secret);
extern void ssl3_FreeSniNameArray(TLSExtensionData *xtnData);

/* Hello Extension related routines. */
extern void ssl3_SetSIDSessionTicket(sslSessionID *sid,
                                     /*in/out*/ NewSessionTicket *session_ticket);
SECStatus ssl3_EncodeSessionTicket(sslSocket *ss,
                                   const NewSessionTicket *ticket,
                                   const PRUint8 *appToken,
                                   unsigned int appTokenLen,
                                   PK11SymKey *secret, SECItem *ticket_data);
SECStatus SSLExp_SendSessionTicket(PRFileDesc *fd, const PRUint8 *token,
                                   unsigned int tokenLen);

SECStatus ssl_MaybeSetSelfEncryptKeyPair(const sslKeyPair *keyPair);
SECStatus ssl_GetSelfEncryptKeys(sslSocket *ss, unsigned char *keyName,
                                 PK11SymKey **encKey, PK11SymKey **macKey);
void ssl_ResetSelfEncryptKeys();

extern SECStatus ssl3_ValidateNextProtoNego(const unsigned char *data,
                                            unsigned int length);

/* Construct a new NSPR socket for the app to use */
extern PRFileDesc *ssl_NewPRSocket(sslSocket *ss, PRFileDesc *fd);
extern void ssl_FreePRSocket(PRFileDesc *fd);

/* Internal config function so SSL3 can initialize the present state of
 * various ciphers */
extern unsigned int ssl3_config_match_init(sslSocket *);

/* calls for accessing wrapping keys across processes. */
extern SECStatus
ssl_GetWrappingKey(unsigned int symWrapMechIndex, unsigned int wrapKeyIndex,
                   SSLWrappedSymWrappingKey *wswk);

/* The caller passes in the new value it wants
 * to set.  This code tests the wrapped sym key entry in the file on disk.
 * If it is uninitialized, this function writes the caller's value into
 * the disk entry, and returns false.
 * Otherwise, it overwrites the caller's wswk with the value obtained from
 * the disk, and returns PR_TRUE.
 * This is all done while holding the locks/semaphores necessary to make
 * the operation atomic.
 */
extern SECStatus
ssl_SetWrappingKey(SSLWrappedSymWrappingKey *wswk);

/* get rid of the symmetric wrapping key references. */
extern SECStatus SSL3_ShutdownServerCache(void);

extern SECStatus ssl_InitSymWrapKeysLock(void);

extern SECStatus ssl_FreeSymWrapKeysLock(void);

extern SECStatus ssl_InitSessionCacheLocks(PRBool lazyInit);

extern SECStatus ssl_FreeSessionCacheLocks(void);

CK_MECHANISM_TYPE ssl3_Alg2Mech(SSLCipherAlgorithm calg);
SECStatus ssl3_NegotiateCipherSuite(sslSocket *ss, const SECItem *suites,
                                    PRBool initHashes);
SECStatus ssl3_InitHandshakeHashes(sslSocket *ss);
SECStatus ssl3_ServerCallSNICallback(sslSocket *ss);
SECStatus ssl3_FlushHandshake(sslSocket *ss, PRInt32 flags);
SECStatus ssl3_CompleteHandleCertificate(sslSocket *ss,
                                         PRUint8 *b, PRUint32 length);
void ssl3_SendAlertForCertError(sslSocket *ss, PRErrorCode errCode);
SECStatus ssl3_HandleNoCertificate(sslSocket *ss);
SECStatus ssl3_SendEmptyCertificate(sslSocket *ss);
void ssl3_CleanupPeerCerts(sslSocket *ss);
SECStatus ssl3_SendCertificateStatus(sslSocket *ss);
SECStatus ssl3_AuthCertificate(sslSocket *ss);
SECStatus ssl_ReadCertificateStatus(sslSocket *ss, PRUint8 *b,
                                    PRUint32 length);
SECStatus ssl3_EncodeSigAlgs(const sslSocket *ss, sslBuffer *buf);
SECStatus ssl_GetCertificateRequestCAs(const sslSocket *ss,
                                       unsigned int *calenp,
                                       const SECItem **namesp,
                                       unsigned int *nnamesp);
SECStatus ssl3_ParseCertificateRequestCAs(sslSocket *ss, PRUint8 **b,
                                          PRUint32 *length, CERTDistNames *ca_list);
SECStatus ssl3_CompleteHandleCertificateRequest(
    sslSocket *ss, const SSLSignatureScheme *signatureSchemes,
    unsigned int signatureSchemeCount, CERTDistNames *ca_list);
SECStatus ssl_ConstructServerHello(sslSocket *ss, PRBool helloRetry,
                                   const sslBuffer *extensionBuf,
                                   sslBuffer *messageBuf);
SECStatus ssl3_SendServerHello(sslSocket *ss);
SECStatus ssl3_SendChangeCipherSpecsInt(sslSocket *ss);
SECStatus ssl3_ComputeHandshakeHashes(sslSocket *ss,
                                      ssl3CipherSpec *spec,
                                      SSL3Hashes *hashes,
                                      PRUint32 sender);
SECStatus ssl_CreateECDHEphemeralKeyPair(const sslSocket *ss,
                                         const sslNamedGroupDef *ecGroup,
                                         sslEphemeralKeyPair **keyPair);
SECStatus ssl_CreateStaticECDHEKey(sslSocket *ss,
                                   const sslNamedGroupDef *ecGroup);
SECStatus ssl3_FlushHandshake(sslSocket *ss, PRInt32 flags);
PK11SymKey *ssl3_GetWrappingKey(sslSocket *ss,
                                PK11SlotInfo *masterSecretSlot,
                                CK_MECHANISM_TYPE masterWrapMech,
                                void *pwArg);
SECStatus ssl3_FillInCachedSID(sslSocket *ss, sslSessionID *sid,
                               PK11SymKey *secret);
const ssl3CipherSuiteDef *ssl_LookupCipherSuiteDef(ssl3CipherSuite suite);
SECStatus ssl3_SelectServerCert(sslSocket *ss);
SECStatus ssl_PickSignatureScheme(sslSocket *ss,
                                  SECKEYPublicKey *pubKey,
                                  SECKEYPrivateKey *privKey,
                                  const SSLSignatureScheme *peerSchemes,
                                  unsigned int peerSchemeCount,
                                  PRBool requireSha1);
SECOidTag ssl3_HashTypeToOID(SSLHashType hashType);
SSLHashType ssl_SignatureSchemeToHashType(SSLSignatureScheme scheme);
KeyType ssl_SignatureSchemeToKeyType(SSLSignatureScheme scheme);

SECStatus ssl3_SetupCipherSuite(sslSocket *ss, PRBool initHashes);

/* Pull in DTLS functions */
#include "dtlscon.h"

/* Pull in TLS 1.3 functions */
#include "tls13con.h"
#include "dtls13con.h"

/********************** misc calls *********************/

#ifdef DEBUG
extern void ssl3_CheckCipherSuiteOrderConsistency();
#endif

extern int ssl_MapLowLevelError(int hiLevelError);

extern PRUint32 ssl_TimeSec(void);
#ifdef UNSAFE_FUZZER_MODE
#define ssl_TimeUsec() ((PRTime)12345678)
#else
#define ssl_TimeUsec() (PR_Now())
#endif
extern PRBool ssl_TicketTimeValid(const NewSessionTicket *ticket);

extern void SSL_AtomicIncrementLong(long *x);

SECStatus ssl3_ApplyNSSPolicy(void);

extern SECStatus
ssl3_TLSPRFWithMasterSecret(sslSocket *ss, ssl3CipherSpec *spec,
                            const char *label, unsigned int labelLen,
                            const unsigned char *val, unsigned int valLen,
                            unsigned char *out, unsigned int outLen);

extern void
ssl3_RecordKeyLog(sslSocket *ss, const char *label, PK11SymKey *secret);

PRBool ssl_AlpnTagAllowed(const sslSocket *ss, const SECItem *tag);

#ifdef TRACE
#define SSL_TRACE(msg) ssl_Trace msg
#else
#define SSL_TRACE(msg)
#endif

void ssl_Trace(const char *format, ...);

SEC_END_PROTOS

#if defined(XP_UNIX) || defined(XP_OS2) || defined(XP_BEOS)
#define SSL_GETPID getpid
#elif defined(WIN32)
extern int __cdecl _getpid(void);
#define SSL_GETPID _getpid
#else
#define SSL_GETPID() 0
#endif

#endif /* __sslimpl_h_ */