-
-
Notifications
You must be signed in to change notification settings - Fork 9.9k
/
ssl_locl.h
2133 lines (1944 loc) · 81.5 KB
/
ssl_locl.h
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 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECC cipher suite support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
/* ====================================================================
* Copyright 2005 Nokia. All rights reserved.
*
* The portions of the attached software ("Contribution") is developed by
* Nokia Corporation and is licensed pursuant to the OpenSSL open source
* license.
*
* The Contribution, originally written by Mika Kousa and Pasi Eronen of
* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
* support (see RFC 4279) to OpenSSL.
*
* No patent licenses or other rights except those expressly stated in
* the OpenSSL open source license shall be deemed granted or received
* expressly, by implication, estoppel, or otherwise.
*
* No assurances are provided by Nokia that the Contribution does not
* infringe the patent or other intellectual property rights of any third
* party or that the license provides you with all the necessary rights
* to make use of the Contribution.
*
* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
* OTHERWISE.
*/
#ifndef HEADER_SSL_LOCL_H
# define HEADER_SSL_LOCL_H
# include <stdlib.h>
# include <time.h>
# include <string.h>
# include <errno.h>
# include "e_os.h"
# if defined(__unix) || defined(__unix__)
# include <sys/time.h> /* struct timeval for DTLS */
# endif
# include <openssl/buffer.h>
# include <openssl/comp.h>
# include <openssl/bio.h>
# include <openssl/stack.h>
# include <openssl/rsa.h>
# include <openssl/dsa.h>
# include <openssl/err.h>
# include <openssl/ssl.h>
# include <openssl/async.h>
# include <openssl/symhacks.h>
# include <openssl/ct.h>
# include "record/record.h"
# include "statem/statem.h"
# include "packet_locl.h"
# include "internal/dane.h"
# ifdef OPENSSL_BUILD_SHLIBSSL
# undef OPENSSL_EXTERN
# define OPENSSL_EXTERN OPENSSL_EXPORT
# endif
# undef PKCS1_CHECK
# define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
l|=(((unsigned long)(*((c)++)))<< 8), \
l|=(((unsigned long)(*((c)++)))<<16), \
l|=(((unsigned long)(*((c)++)))<<24))
/* NOTE - c is not incremented as per c2l */
# define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c))))<<24; \
case 7: l2|=((unsigned long)(*(--(c))))<<16; \
case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
case 5: l2|=((unsigned long)(*(--(c)))); \
case 4: l1 =((unsigned long)(*(--(c))))<<24; \
case 3: l1|=((unsigned long)(*(--(c))))<<16; \
case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
case 1: l1|=((unsigned long)(*(--(c)))); \
} \
}
# define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff))
# define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
l|=((unsigned long)(*((c)++)))<<16, \
l|=((unsigned long)(*((c)++)))<< 8, \
l|=((unsigned long)(*((c)++))))
# define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
l|=((uint64_t)(*((c)++)))<<48, \
l|=((uint64_t)(*((c)++)))<<40, \
l|=((uint64_t)(*((c)++)))<<32, \
l|=((uint64_t)(*((c)++)))<<24, \
l|=((uint64_t)(*((c)++)))<<16, \
l|=((uint64_t)(*((c)++)))<< 8, \
l|=((uint64_t)(*((c)++))))
# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
*((c)++)=(unsigned char)(((l)>>48)&0xff), \
*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
/* NOTE - c is not incremented as per l2c */
# define l2cn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
} \
}
# define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
(((unsigned int)((c)[1])) )),(c)+=2)
# define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
(c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
# define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
(((unsigned long)((c)[1]))<< 8)| \
(((unsigned long)((c)[2])) )),(c)+=3)
# define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
(c)[1]=(unsigned char)(((l)>> 8)&0xff), \
(c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
/*
* DTLS version numbers are strange because they're inverted. Except for
* DTLS1_BAD_VER, which should be considered "lower" than the rest.
*/
# define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
# define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
# define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
# define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
# define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
/* LOCAL STUFF */
# define SSL_DECRYPT 0
# define SSL_ENCRYPT 1
# define TWO_BYTE_BIT 0x80
# define SEC_ESC_BIT 0x40
# define TWO_BYTE_MASK 0x7fff
# define THREE_BYTE_MASK 0x3fff
# define INC32(a) ((a)=((a)+1)&0xffffffffL)
# define DEC32(a) ((a)=((a)-1)&0xffffffffL)
# define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
/*
* Define the Bitmasks for SSL_CIPHER.algorithms.
* This bits are used packed as dense as possible. If new methods/ciphers
* etc will be added, the bits a likely to change, so this information
* is for internal library use only, even though SSL_CIPHER.algorithms
* can be publicly accessed.
* Use the according functions for cipher management instead.
*
* The bit mask handling in the selection and sorting scheme in
* ssl_create_cipher_list() has only limited capabilities, reflecting
* that the different entities within are mutually exclusive:
* ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
*/
/* Bits for algorithm_mkey (key exchange algorithm) */
/* RSA key exchange */
# define SSL_kRSA 0x00000001U
/* tmp DH key no DH cert */
# define SSL_kDHE 0x00000002U
/* synonym */
# define SSL_kEDH SSL_kDHE
/* ephemeral ECDH */
# define SSL_kECDHE 0x00000004U
/* synonym */
# define SSL_kEECDH SSL_kECDHE
/* PSK */
# define SSL_kPSK 0x00000008U
/* GOST key exchange */
# define SSL_kGOST 0x00000010U
/* SRP */
# define SSL_kSRP 0x00000020U
# define SSL_kRSAPSK 0x00000040U
# define SSL_kECDHEPSK 0x00000080U
# define SSL_kDHEPSK 0x00000100U
/* all PSK */
# define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
/* Bits for algorithm_auth (server authentication) */
/* RSA auth */
# define SSL_aRSA 0x00000001U
/* DSS auth */
# define SSL_aDSS 0x00000002U
/* no auth (i.e. use ADH or AECDH) */
# define SSL_aNULL 0x00000004U
/* ECDSA auth*/
# define SSL_aECDSA 0x00000008U
/* PSK auth */
# define SSL_aPSK 0x00000010U
/* GOST R 34.10-2001 signature auth */
# define SSL_aGOST01 0x00000020U
/* SRP auth */
# define SSL_aSRP 0x00000040U
/* GOST R 34.10-2012 signature auth */
# define SSL_aGOST12 0x00000080U
/* Bits for algorithm_enc (symmetric encryption) */
# define SSL_DES 0x00000001U
# define SSL_3DES 0x00000002U
# define SSL_RC4 0x00000004U
# define SSL_RC2 0x00000008U
# define SSL_IDEA 0x00000010U
# define SSL_eNULL 0x00000020U
# define SSL_AES128 0x00000040U
# define SSL_AES256 0x00000080U
# define SSL_CAMELLIA128 0x00000100U
# define SSL_CAMELLIA256 0x00000200U
# define SSL_eGOST2814789CNT 0x00000400U
# define SSL_SEED 0x00000800U
# define SSL_AES128GCM 0x00001000U
# define SSL_AES256GCM 0x00002000U
# define SSL_AES128CCM 0x00004000U
# define SSL_AES256CCM 0x00008000U
# define SSL_AES128CCM8 0x00010000U
# define SSL_AES256CCM8 0x00020000U
# define SSL_eGOST2814789CNT12 0x00040000U
# define SSL_CHACHA20POLY1305 0x00080000U
# define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
# define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
# define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
# define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
# define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
/* Bits for algorithm_mac (symmetric authentication) */
# define SSL_MD5 0x00000001U
# define SSL_SHA1 0x00000002U
# define SSL_GOST94 0x00000004U
# define SSL_GOST89MAC 0x00000008U
# define SSL_SHA256 0x00000010U
# define SSL_SHA384 0x00000020U
/* Not a real MAC, just an indication it is part of cipher */
# define SSL_AEAD 0x00000040U
# define SSL_GOST12_256 0x00000080U
# define SSL_GOST89MAC12 0x00000100U
# define SSL_GOST12_512 0x00000200U
/*
* When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
* sure to update this constant too
*/
# define SSL_MD_MD5_IDX 0
# define SSL_MD_SHA1_IDX 1
# define SSL_MD_GOST94_IDX 2
# define SSL_MD_GOST89MAC_IDX 3
# define SSL_MD_SHA256_IDX 4
# define SSL_MD_SHA384_IDX 5
# define SSL_MD_GOST12_256_IDX 6
# define SSL_MD_GOST89MAC12_IDX 7
# define SSL_MD_GOST12_512_IDX 8
# define SSL_MD_MD5_SHA1_IDX 9
# define SSL_MD_SHA224_IDX 10
# define SSL_MD_SHA512_IDX 11
# define SSL_MAX_DIGEST 12
/* Bits for algorithm2 (handshake digests and other extra flags) */
/* Bits 0-7 are handshake MAC */
# define SSL_HANDSHAKE_MAC_MASK 0xFF
# define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
# define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
# define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
# define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
# define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
# define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
# define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
/* Bits 8-15 bits are PRF */
# define TLS1_PRF_DGST_SHIFT 8
# define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
/*
* Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
* goes into algorithm2)
*/
# define TLS1_STREAM_MAC 0x10000
# define SSL_STRONG_MASK 0x0000001FU
# define SSL_DEFAULT_MASK 0X00000020U
# define SSL_STRONG_NONE 0x00000001U
# define SSL_LOW 0x00000002U
# define SSL_MEDIUM 0x00000004U
# define SSL_HIGH 0x00000008U
# define SSL_FIPS 0x00000010U
# define SSL_NOT_DEFAULT 0x00000020U
/* we have used 0000003f - 26 bits left to go */
/* Check if an SSL structure is using DTLS */
# define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
/* See if we need explicit IV */
# define SSL_USE_EXPLICIT_IV(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
/*
* See if we use signature algorithms extension and signature algorithm
* before signatures.
*/
# define SSL_USE_SIGALGS(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
/*
* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
* apply to others in future.
*/
# define SSL_USE_TLS1_2_CIPHERS(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
/*
* Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
* flags because it may not be set to correct version yet.
*/
# define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
(SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
/*
* Determine if a client should send signature algorithms extension:
* as with TLS1.2 cipher we can't rely on method flags.
*/
# define SSL_CLIENT_USE_SIGALGS(s) \
SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
# define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
# define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
/* Mostly for SSLv3 */
# define SSL_PKEY_RSA_ENC 0
# define SSL_PKEY_RSA_SIGN 1
# define SSL_PKEY_DSA_SIGN 2
# define SSL_PKEY_ECC 3
# define SSL_PKEY_GOST01 4
# define SSL_PKEY_GOST12_256 5
# define SSL_PKEY_GOST12_512 6
# define SSL_PKEY_NUM 7
/*
* Pseudo-constant. GOST cipher suites can use different certs for 1
* SSL_CIPHER. So let's see which one we have in fact.
*/
# define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1
/*-
* SSL_kRSA <- RSA_ENC
* SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
* SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
* SSL_aRSA <- RSA_ENC | RSA_SIGN
* SSL_aDSS <- DSA_SIGN
*/
/*-
#define CERT_INVALID 0
#define CERT_PUBLIC_KEY 1
#define CERT_PRIVATE_KEY 2
*/
/* CipherSuite length. SSLv3 and all TLS versions. */
# define TLS_CIPHER_LEN 2
/* used to hold info on the particular ciphers used */
struct ssl_cipher_st {
uint32_t valid;
const char *name; /* text name */
uint32_t id; /* id, 4 bytes, first is version */
/*
* changed in 1.0.0: these four used to be portions of a single value
* 'algorithms'
*/
uint32_t algorithm_mkey; /* key exchange algorithm */
uint32_t algorithm_auth; /* server authentication */
uint32_t algorithm_enc; /* symmetric encryption */
uint32_t algorithm_mac; /* symmetric authentication */
int min_tls; /* minimum SSL/TLS protocol version */
int max_tls; /* maximum SSL/TLS protocol version */
int min_dtls; /* minimum DTLS protocol version */
int max_dtls; /* maximum DTLS protocol version */
uint32_t algo_strength; /* strength and export flags */
uint32_t algorithm2; /* Extra flags */
int32_t strength_bits; /* Number of bits really used */
uint32_t alg_bits; /* Number of bits for algorithm */
};
/* Used to hold SSL/TLS functions */
struct ssl_method_st {
int version;
unsigned flags;
unsigned long mask;
int (*ssl_new) (SSL *s);
void (*ssl_clear) (SSL *s);
void (*ssl_free) (SSL *s);
int (*ssl_accept) (SSL *s);
int (*ssl_connect) (SSL *s);
int (*ssl_read) (SSL *s, void *buf, int len);
int (*ssl_peek) (SSL *s, void *buf, int len);
int (*ssl_write) (SSL *s, const void *buf, int len);
int (*ssl_shutdown) (SSL *s);
int (*ssl_renegotiate) (SSL *s);
int (*ssl_renegotiate_check) (SSL *s);
int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
unsigned char *buf, int len, int peek);
int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, int len);
int (*ssl_dispatch_alert) (SSL *s);
long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
int (*ssl_pending) (const SSL *s);
int (*num_ciphers) (void);
const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
long (*get_timeout) (void);
const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
int (*ssl_version) (void);
long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
};
/*-
* Lets make this into an ASN.1 type structure as follows
* SSL_SESSION_ID ::= SEQUENCE {
* version INTEGER, -- structure version number
* SSLversion INTEGER, -- SSL version number
* Cipher OCTET STRING, -- the 3 byte cipher ID
* Session_ID OCTET STRING, -- the Session ID
* Master_key OCTET STRING, -- the master key
* Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
* Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
* Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
* Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
* Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
* Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
* HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
* PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
* PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
* Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
* Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
* Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
* SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
* flags [ 13 ] EXPLICIT INTEGER -- optional flags
* }
* Look in ssl/ssl_asn1.c for more details
* I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
*/
struct ssl_session_st {
int ssl_version; /* what ssl version session info is being kept
* in here? */
int master_key_length;
unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
/* session_id - valid? */
unsigned int session_id_length;
unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
/*
* this is used to determine whether the session is being reused in the
* appropriate context. It is up to the application to set this, via
* SSL_new
*/
unsigned int sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
# ifndef OPENSSL_NO_PSK
char *psk_identity_hint;
char *psk_identity;
# endif
/*
* Used to indicate that session resumption is not allowed. Applications
* can also set this bit for a new session via not_resumable_session_cb
* to disable session caching and tickets.
*/
int not_resumable;
/* This is the cert and type for the other end. */
X509 *peer;
int peer_type;
/* Certificate chain peer sent */
STACK_OF(X509) *peer_chain;
/*
* when app_verify_callback accepts a session where the peer's
* certificate is not ok, we must remember the error for session reuse:
*/
long verify_result; /* only for servers */
int references;
long timeout;
long time;
unsigned int compress_meth; /* Need to lookup the method */
const SSL_CIPHER *cipher;
unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
* load the 'cipher' structure */
STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
CRYPTO_EX_DATA ex_data; /* application specific data */
/*
* These are used to make removal of session-ids more efficient and to
* implement a maximum cache size.
*/
struct ssl_session_st *prev, *next;
char *tlsext_hostname;
# ifndef OPENSSL_NO_EC
size_t tlsext_ecpointformatlist_length;
unsigned char *tlsext_ecpointformatlist; /* peer's list */
size_t tlsext_ellipticcurvelist_length;
unsigned char *tlsext_ellipticcurvelist; /* peer's list */
# endif /* OPENSSL_NO_EC */
/* RFC4507 info */
unsigned char *tlsext_tick; /* Session ticket */
size_t tlsext_ticklen; /* Session ticket length */
unsigned long tlsext_tick_lifetime_hint; /* Session lifetime hint in
* seconds */
# ifndef OPENSSL_NO_SRP
char *srp_username;
# endif
uint32_t flags;
CRYPTO_RWLOCK *lock;
};
/* Extended master secret support */
# define SSL_SESS_FLAG_EXTMS 0x1
# ifndef OPENSSL_NO_SRP
typedef struct srp_ctx_st {
/* param for all the callbacks */
void *SRP_cb_arg;
/* set client Hello login callback */
int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
/* set SRP N/g param callback for verification */
int (*SRP_verify_param_callback) (SSL *, void *);
/* set SRP client passwd callback */
char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
char *login;
BIGNUM *N, *g, *s, *B, *A;
BIGNUM *a, *b, *v;
char *info;
int strength;
unsigned long srp_Mask;
} SRP_CTX;
# endif
struct ssl_comp_st {
int id;
const char *name;
COMP_METHOD *method;
};
DEFINE_LHASH_OF(SSL_SESSION);
/* Needed in ssl_cert.c */
DEFINE_LHASH_OF(X509_NAME);
# define TLSEXT_KEYNAME_LENGTH 16
struct ssl_ctx_st {
const SSL_METHOD *method;
STACK_OF(SSL_CIPHER) *cipher_list;
/* same as above but sorted for lookup */
STACK_OF(SSL_CIPHER) *cipher_list_by_id;
struct x509_store_st /* X509_STORE */ *cert_store;
LHASH_OF(SSL_SESSION) *sessions;
/*
* Most session-ids that will be cached, default is
* SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
*/
unsigned long session_cache_size;
struct ssl_session_st *session_cache_head;
struct ssl_session_st *session_cache_tail;
/*
* This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
* SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
* means only SSL_accept which cache SSL_SESSIONS.
*/
uint32_t session_cache_mode;
/*
* If timeout is not 0, it is the default timeout value set when
* SSL_new() is called. This has been put in to make life easier to set
* things up
*/
long session_timeout;
/*
* If this callback is not null, it will be called each time a session id
* is added to the cache. If this function returns 1, it means that the
* callback will do a SSL_SESSION_free() when it has finished using it.
* Otherwise, on 0, it means the callback has finished with it. If
* remove_session_cb is not null, it will be called when a session-id is
* removed from the cache. After the call, OpenSSL will
* SSL_SESSION_free() it.
*/
int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
const unsigned char *data, int len,
int *copy);
struct {
int sess_connect; /* SSL new conn - started */
int sess_connect_renegotiate; /* SSL reneg - requested */
int sess_connect_good; /* SSL new conne/reneg - finished */
int sess_accept; /* SSL new accept - started */
int sess_accept_renegotiate; /* SSL reneg - requested */
int sess_accept_good; /* SSL accept/reneg - finished */
int sess_miss; /* session lookup misses */
int sess_timeout; /* reuse attempt on timeouted session */
int sess_cache_full; /* session removed due to full cache */
int sess_hit; /* session reuse actually done */
int sess_cb_hit; /* session-id that was not in the cache was
* passed back via the callback. This
* indicates that the application is supplying
* session-id's from other processes - spooky
* :-) */
} stats;
int references;
/* if defined, these override the X509_verify_cert() calls */
int (*app_verify_callback) (X509_STORE_CTX *, void *);
void *app_verify_arg;
/*
* before OpenSSL 0.9.7, 'app_verify_arg' was ignored
* ('app_verify_callback' was called with just one argument)
*/
/* Default password callback. */
pem_password_cb *default_passwd_callback;
/* Default password callback user data. */
void *default_passwd_callback_userdata;
/* get client cert callback */
int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
/* cookie generate callback */
int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
unsigned int *cookie_len);
/* verify cookie callback */
int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
unsigned int cookie_len);
CRYPTO_EX_DATA ex_data;
const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
STACK_OF(X509) *extra_certs;
STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
/* Default values used when no per-SSL value is defined follow */
/* used if SSL's info_callback is NULL */
void (*info_callback) (const SSL *ssl, int type, int val);
/* what we put in client cert requests */
STACK_OF(X509_NAME) *client_CA;
/*
* Default values to use in SSL structures follow (these are copied by
* SSL_new)
*/
uint32_t options;
uint32_t mode;
int min_proto_version;
int max_proto_version;
long max_cert_list;
struct cert_st /* CERT */ *cert;
int read_ahead;
/* callback that allows applications to peek at protocol messages */
void (*msg_callback) (int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
void *msg_callback_arg;
uint32_t verify_mode;
unsigned int sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
/* called 'verify_callback' in the SSL */
int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
/* Default generate session ID callback. */
GEN_SESSION_CB generate_session_id;
X509_VERIFY_PARAM *param;
int quiet_shutdown;
# ifndef OPENSSL_NO_CT
CTLOG_STORE *ctlog_store; /* CT Log Store */
/*
* Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
* If they are not, the connection should be aborted.
*/
ssl_ct_validation_cb ct_validation_callback;
void *ct_validation_callback_arg;
# endif
/*
* If we're using more than one pipeline how should we divide the data
* up between the pipes?
*/
unsigned int split_send_fragment;
/*
* Maximum amount of data to send in one fragment. actual record size can
* be more than this due to padding and MAC overheads.
*/
unsigned int max_send_fragment;
/* Up to how many pipelines should we use? If 0 then 1 is assumed */
unsigned int max_pipelines;
/* The default read buffer length to use (0 means not set) */
size_t default_read_buf_len;
# ifndef OPENSSL_NO_ENGINE
/*
* Engine to pass requests for client certs to
*/
ENGINE *client_cert_engine;
# endif
/* TLS extensions servername callback */
int (*tlsext_servername_callback) (SSL *, int *, void *);
void *tlsext_servername_arg;
/* RFC 4507 session ticket keys */
unsigned char tlsext_tick_key_name[TLSEXT_KEYNAME_LENGTH];
unsigned char tlsext_tick_hmac_key[32];
unsigned char tlsext_tick_aes_key[32];
/* Callback to support customisation of ticket key setting */
int (*tlsext_ticket_key_cb) (SSL *ssl,
unsigned char *name, unsigned char *iv,
EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
/* certificate status request info */
/* Callback for status request */
int (*tlsext_status_cb) (SSL *ssl, void *arg);
void *tlsext_status_arg;
# ifndef OPENSSL_NO_PSK
unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
char *identity,
unsigned int max_identity_len,
unsigned char *psk,
unsigned int max_psk_len);
unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
unsigned char *psk,
unsigned int max_psk_len);
# endif
# ifndef OPENSSL_NO_SRP
SRP_CTX srp_ctx; /* ctx for SRP authentication */
# endif
# ifndef OPENSSL_NO_NEXTPROTONEG
/* Next protocol negotiation information */
/*
* For a server, this contains a callback function by which the set of
* advertised protocols can be provided.
*/
int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
unsigned int *len, void *arg);
void *next_protos_advertised_cb_arg;
/*
* For a client, this contains a callback function that selects the next
* protocol from the list provided by the server.
*/
int (*next_proto_select_cb) (SSL *s, unsigned char **out,
unsigned char *outlen,
const unsigned char *in,
unsigned int inlen, void *arg);
void *next_proto_select_cb_arg;
# endif
/*
* ALPN information (we are in the process of transitioning from NPN to
* ALPN.)
*/
/*-
* For a server, this contains a callback function that allows the
* server to select the protocol for the connection.
* out: on successful return, this must point to the raw protocol
* name (without the length prefix).
* outlen: on successful return, this contains the length of |*out|.
* in: points to the client's list of supported protocols in
* wire-format.
* inlen: the length of |in|.
*/
int (*alpn_select_cb) (SSL *s,
const unsigned char **out,
unsigned char *outlen,
const unsigned char *in,
unsigned int inlen, void *arg);
void *alpn_select_cb_arg;
/*
* For a client, this contains the list of supported protocols in wire
* format.
*/
unsigned char *alpn_client_proto_list;
unsigned alpn_client_proto_list_len;
/* Shared DANE context */
struct dane_ctx_st dane;
/* SRTP profiles we are willing to do from RFC 5764 */
STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
/*
* Callback for disabling session caching and ticket support on a session
* basis, depending on the chosen cipher.
*/
int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
# ifndef OPENSSL_NO_EC
/* EC extension values inherited by SSL structure */
size_t tlsext_ecpointformatlist_length;
unsigned char *tlsext_ecpointformatlist;
size_t tlsext_ellipticcurvelist_length;
unsigned char *tlsext_ellipticcurvelist;
# endif /* OPENSSL_NO_EC */
/* ext status type used for CSR extension (OCSP Stapling) */
int tlsext_status_type;
CRYPTO_RWLOCK *lock;
};
struct ssl_st {
/*
* protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
* DTLS1_VERSION)
*/
int version;
/* SSLv3 */
const SSL_METHOD *method;
/*
* There are 2 BIO's even though they are normally both the same. This
* is so data can be read and written to different handlers
*/
/* used by SSL_read */
BIO *rbio;
/* used by SSL_write */
BIO *wbio;
/* used during session-id reuse to concatenate messages */
BIO *bbio;
/*
* This holds a variable that indicates what we were doing when a 0 or -1
* is returned. This is needed for non-blocking IO so we know what
* request needs re-doing when in SSL_accept or SSL_connect
*/
int rwstate;
int (*handshake_func) (SSL *);
/*
* Imagine that here's a boolean member "init" that is switched as soon
* as SSL_set_{accept/connect}_state is called for the first time, so
* that "state" and "handshake_func" are properly initialized. But as
* handshake_func is == 0 until then, we use this test instead of an
* "init" member.
*/
/* are we the server side? */
int server;
/*
* Generate a new session or reuse an old one.
* NB: For servers, the 'new' session may actually be a previously
* cached session or even the previous session unless
* SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
*/
int new_session;
/* don't send shutdown packets */
int quiet_shutdown;
/* we have shut things down, 0x01 sent, 0x02 for received */
int shutdown;
/* where we are */
OSSL_STATEM statem;
BUF_MEM *init_buf; /* buffer used during init */
void *init_msg; /* pointer to handshake message body, set by
* ssl3_get_message() */
int init_num; /* amount read/written */
int init_off; /* amount read/written */
struct ssl3_state_st *s3; /* SSLv3 variables */
struct dtls1_state_st *d1; /* DTLSv1 variables */
/* callback that allows applications to peek at protocol messages */
void (*msg_callback) (int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
void *msg_callback_arg;
int hit; /* reusing a previous session */
X509_VERIFY_PARAM *param;
/* Per connection DANE state */
SSL_DANE dane;
/* crypto */
STACK_OF(SSL_CIPHER) *cipher_list;
STACK_OF(SSL_CIPHER) *cipher_list_by_id;
/*
* These are the ones being used, the ones in SSL_SESSION are the ones to
* be 'copied' into these ones
*/
uint32_t mac_flags;
EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
EVP_MD_CTX *read_hash; /* used for mac generation */
COMP_CTX *compress; /* compression */
COMP_CTX *expand; /* uncompress */
EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
EVP_MD_CTX *write_hash; /* used for mac generation */
/* session info */
/* client cert? */
/* This is used to hold the server certificate used */
struct cert_st /* CERT */ *cert;
/*
* the session_id_context is used to ensure sessions are only reused in
* the appropriate context
*/
unsigned int sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
/* This can also be in the session once a session is established */
SSL_SESSION *session;
/* Default generate session ID callback. */
GEN_SESSION_CB generate_session_id;
/* Used in SSL3 */
/*
* 0 don't care about verify failure.
* 1 fail if verify fails
*/
uint32_t verify_mode;
/* fail if callback returns 0 */
int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
/* optional informational callback */
void (*info_callback) (const SSL *ssl, int type, int val);
/* error bytes to be written */
int error;
/* actual code */
int error_code;
# ifndef OPENSSL_NO_PSK
unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
char *identity,
unsigned int max_identity_len,
unsigned char *psk,
unsigned int max_psk_len);
unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
unsigned char *psk,
unsigned int max_psk_len);
# endif
SSL_CTX *ctx;
/* Verified chain of peer */
STACK_OF(X509) *verified_chain;
long verify_result;
/* extra application data */
CRYPTO_EX_DATA ex_data;
/* for server side, keep the list of CA_dn we can use */
STACK_OF(X509_NAME) *client_CA;
int references;
/* protocol behaviour */
uint32_t options;
/* API behaviour */