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source: vbox/trunk/src/libs/openssl-1.1.1l/ssl/ssl_local.h@ 91772

Last change on this file since 91772 was 91772, checked in by vboxsync, 3 years ago

openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126
File size: 101.9 KB
Line 
1/*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
5 *
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12#ifndef OSSL_SSL_LOCAL_H
13# define OSSL_SSL_LOCAL_H
14
15# include "e_os.h" /* struct timeval for DTLS */
16# include <stdlib.h>
17# include <time.h>
18# include <string.h>
19# include <errno.h>
20
21# include <openssl/buffer.h>
22# include <openssl/comp.h>
23# include <openssl/bio.h>
24# include <openssl/rsa.h>
25# include <openssl/dsa.h>
26# include <openssl/err.h>
27# include <openssl/ssl.h>
28# include <openssl/async.h>
29# include <openssl/symhacks.h>
30# include <openssl/ct.h>
31# include "record/record.h"
32# include "statem/statem.h"
33# include "packet_local.h"
34# include "internal/dane.h"
35# include "internal/refcount.h"
36# include "internal/tsan_assist.h"
37
38# ifdef OPENSSL_BUILD_SHLIBSSL
39# undef OPENSSL_EXTERN
40# define OPENSSL_EXTERN OPENSSL_EXPORT
41# endif
42
43# define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
44 l|=(((unsigned long)(*((c)++)))<< 8), \
45 l|=(((unsigned long)(*((c)++)))<<16), \
46 l|=(((unsigned long)(*((c)++)))<<24))
47
48/* NOTE - c is not incremented as per c2l */
49# define c2ln(c,l1,l2,n) { \
50 c+=n; \
51 l1=l2=0; \
52 switch (n) { \
53 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
54 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
55 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
56 case 5: l2|=((unsigned long)(*(--(c)))); \
57 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
58 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
59 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
60 case 1: l1|=((unsigned long)(*(--(c)))); \
61 } \
62 }
63
64# define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
65 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
66 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
67 *((c)++)=(unsigned char)(((l)>>24)&0xff))
68
69# define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
70 l|=((unsigned long)(*((c)++)))<<16, \
71 l|=((unsigned long)(*((c)++)))<< 8, \
72 l|=((unsigned long)(*((c)++))))
73
74# define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
75 l|=((uint64_t)(*((c)++)))<<48, \
76 l|=((uint64_t)(*((c)++)))<<40, \
77 l|=((uint64_t)(*((c)++)))<<32, \
78 l|=((uint64_t)(*((c)++)))<<24, \
79 l|=((uint64_t)(*((c)++)))<<16, \
80 l|=((uint64_t)(*((c)++)))<< 8, \
81 l|=((uint64_t)(*((c)++))))
82
83
84# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
85 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
86 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
87 *((c)++)=(unsigned char)(((l) )&0xff))
88
89# define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
90 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
91 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
93 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
94 *((c)++)=(unsigned char)(((l) )&0xff))
95
96# define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
97 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
98 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
102 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
103 *((c)++)=(unsigned char)(((l) )&0xff))
104
105/* NOTE - c is not incremented as per l2c */
106# define l2cn(l1,l2,c,n) { \
107 c+=n; \
108 switch (n) { \
109 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
110 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
111 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
112 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
113 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
114 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
115 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
116 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
117 } \
118 }
119
120# define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
121 (((unsigned int)((c)[1])) )),(c)+=2)
122# define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
123 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
124
125# define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
126 (((unsigned long)((c)[1]))<< 8)| \
127 (((unsigned long)((c)[2])) )),(c)+=3)
128
129# define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
130 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
131 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
132
133/*
134 * DTLS version numbers are strange because they're inverted. Except for
135 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
136 */
137# define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
138# define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
139# define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
140# define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
141# define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
142
143
144/*
145 * Define the Bitmasks for SSL_CIPHER.algorithms.
146 * This bits are used packed as dense as possible. If new methods/ciphers
147 * etc will be added, the bits a likely to change, so this information
148 * is for internal library use only, even though SSL_CIPHER.algorithms
149 * can be publicly accessed.
150 * Use the according functions for cipher management instead.
151 *
152 * The bit mask handling in the selection and sorting scheme in
153 * ssl_create_cipher_list() has only limited capabilities, reflecting
154 * that the different entities within are mutually exclusive:
155 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
156 */
157
158/* Bits for algorithm_mkey (key exchange algorithm) */
159/* RSA key exchange */
160# define SSL_kRSA 0x00000001U
161/* tmp DH key no DH cert */
162# define SSL_kDHE 0x00000002U
163/* synonym */
164# define SSL_kEDH SSL_kDHE
165/* ephemeral ECDH */
166# define SSL_kECDHE 0x00000004U
167/* synonym */
168# define SSL_kEECDH SSL_kECDHE
169/* PSK */
170# define SSL_kPSK 0x00000008U
171/* GOST key exchange */
172# define SSL_kGOST 0x00000010U
173/* SRP */
174# define SSL_kSRP 0x00000020U
175
176# define SSL_kRSAPSK 0x00000040U
177# define SSL_kECDHEPSK 0x00000080U
178# define SSL_kDHEPSK 0x00000100U
179
180/* all PSK */
181
182# define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
183
184/* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
185# define SSL_kANY 0x00000000U
186
187/* Bits for algorithm_auth (server authentication) */
188/* RSA auth */
189# define SSL_aRSA 0x00000001U
190/* DSS auth */
191# define SSL_aDSS 0x00000002U
192/* no auth (i.e. use ADH or AECDH) */
193# define SSL_aNULL 0x00000004U
194/* ECDSA auth*/
195# define SSL_aECDSA 0x00000008U
196/* PSK auth */
197# define SSL_aPSK 0x00000010U
198/* GOST R 34.10-2001 signature auth */
199# define SSL_aGOST01 0x00000020U
200/* SRP auth */
201# define SSL_aSRP 0x00000040U
202/* GOST R 34.10-2012 signature auth */
203# define SSL_aGOST12 0x00000080U
204/* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
205# define SSL_aANY 0x00000000U
206/* All bits requiring a certificate */
207#define SSL_aCERT \
208 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
209
210/* Bits for algorithm_enc (symmetric encryption) */
211# define SSL_DES 0x00000001U
212# define SSL_3DES 0x00000002U
213# define SSL_RC4 0x00000004U
214# define SSL_RC2 0x00000008U
215# define SSL_IDEA 0x00000010U
216# define SSL_eNULL 0x00000020U
217# define SSL_AES128 0x00000040U
218# define SSL_AES256 0x00000080U
219# define SSL_CAMELLIA128 0x00000100U
220# define SSL_CAMELLIA256 0x00000200U
221# define SSL_eGOST2814789CNT 0x00000400U
222# define SSL_SEED 0x00000800U
223# define SSL_AES128GCM 0x00001000U
224# define SSL_AES256GCM 0x00002000U
225# define SSL_AES128CCM 0x00004000U
226# define SSL_AES256CCM 0x00008000U
227# define SSL_AES128CCM8 0x00010000U
228# define SSL_AES256CCM8 0x00020000U
229# define SSL_eGOST2814789CNT12 0x00040000U
230# define SSL_CHACHA20POLY1305 0x00080000U
231# define SSL_ARIA128GCM 0x00100000U
232# define SSL_ARIA256GCM 0x00200000U
233
234# define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
235# define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
236# define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
237# define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
238# define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
239# define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
240# define SSL_ARIA (SSL_ARIAGCM)
241
242/* Bits for algorithm_mac (symmetric authentication) */
243
244# define SSL_MD5 0x00000001U
245# define SSL_SHA1 0x00000002U
246# define SSL_GOST94 0x00000004U
247# define SSL_GOST89MAC 0x00000008U
248# define SSL_SHA256 0x00000010U
249# define SSL_SHA384 0x00000020U
250/* Not a real MAC, just an indication it is part of cipher */
251# define SSL_AEAD 0x00000040U
252# define SSL_GOST12_256 0x00000080U
253# define SSL_GOST89MAC12 0x00000100U
254# define SSL_GOST12_512 0x00000200U
255
256/*
257 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
258 * sure to update this constant too
259 */
260
261# define SSL_MD_MD5_IDX 0
262# define SSL_MD_SHA1_IDX 1
263# define SSL_MD_GOST94_IDX 2
264# define SSL_MD_GOST89MAC_IDX 3
265# define SSL_MD_SHA256_IDX 4
266# define SSL_MD_SHA384_IDX 5
267# define SSL_MD_GOST12_256_IDX 6
268# define SSL_MD_GOST89MAC12_IDX 7
269# define SSL_MD_GOST12_512_IDX 8
270# define SSL_MD_MD5_SHA1_IDX 9
271# define SSL_MD_SHA224_IDX 10
272# define SSL_MD_SHA512_IDX 11
273# define SSL_MAX_DIGEST 12
274
275/* Bits for algorithm2 (handshake digests and other extra flags) */
276
277/* Bits 0-7 are handshake MAC */
278# define SSL_HANDSHAKE_MAC_MASK 0xFF
279# define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
280# define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
281# define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
282# define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
283# define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
284# define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
285# define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
286
287/* Bits 8-15 bits are PRF */
288# define TLS1_PRF_DGST_SHIFT 8
289# define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
290# define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
291# define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
292# define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
293# define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
294# define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
295# define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
296
297/*
298 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
299 * goes into algorithm2)
300 */
301# define TLS1_STREAM_MAC 0x10000
302
303# define SSL_STRONG_MASK 0x0000001FU
304# define SSL_DEFAULT_MASK 0X00000020U
305
306# define SSL_STRONG_NONE 0x00000001U
307# define SSL_LOW 0x00000002U
308# define SSL_MEDIUM 0x00000004U
309# define SSL_HIGH 0x00000008U
310# define SSL_FIPS 0x00000010U
311# define SSL_NOT_DEFAULT 0x00000020U
312
313/* we have used 0000003f - 26 bits left to go */
314
315/* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
316# define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
317
318/* Check if an SSL structure is using DTLS */
319# define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
320
321/* Check if we are using TLSv1.3 */
322# define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
323 && (s)->method->version >= TLS1_3_VERSION \
324 && (s)->method->version != TLS_ANY_VERSION)
325
326# define SSL_TREAT_AS_TLS13(s) \
327 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
328 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
329 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
330 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
331 || (s)->hello_retry_request == SSL_HRR_PENDING)
332
333# define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0 \
334 || (s)->s3->tmp.peer_finish_md_len == 0)
335
336/* See if we need explicit IV */
337# define SSL_USE_EXPLICIT_IV(s) \
338 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
339/*
340 * See if we use signature algorithms extension and signature algorithm
341 * before signatures.
342 */
343# define SSL_USE_SIGALGS(s) \
344 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
345/*
346 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
347 * apply to others in future.
348 */
349# define SSL_USE_TLS1_2_CIPHERS(s) \
350 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
351/*
352 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
353 * flags because it may not be set to correct version yet.
354 */
355# define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
356 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
357 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
358/*
359 * Determine if a client should send signature algorithms extension:
360 * as with TLS1.2 cipher we can't rely on method flags.
361 */
362# define SSL_CLIENT_USE_SIGALGS(s) \
363 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
364
365# define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
366 (((value) >= TLSEXT_max_fragment_length_512) && \
367 ((value) <= TLSEXT_max_fragment_length_4096))
368# define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
369 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
370# define GET_MAX_FRAGMENT_LENGTH(session) \
371 (512U << (session->ext.max_fragment_len_mode - 1))
372
373# define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
374# define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
375
376/* Mostly for SSLv3 */
377# define SSL_PKEY_RSA 0
378# define SSL_PKEY_RSA_PSS_SIGN 1
379# define SSL_PKEY_DSA_SIGN 2
380# define SSL_PKEY_ECC 3
381# define SSL_PKEY_GOST01 4
382# define SSL_PKEY_GOST12_256 5
383# define SSL_PKEY_GOST12_512 6
384# define SSL_PKEY_ED25519 7
385# define SSL_PKEY_ED448 8
386# define SSL_PKEY_NUM 9
387
388/*-
389 * SSL_kRSA <- RSA_ENC
390 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
391 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
392 * SSL_aRSA <- RSA_ENC | RSA_SIGN
393 * SSL_aDSS <- DSA_SIGN
394 */
395
396/*-
397#define CERT_INVALID 0
398#define CERT_PUBLIC_KEY 1
399#define CERT_PRIVATE_KEY 2
400*/
401
402/* Post-Handshake Authentication state */
403typedef enum {
404 SSL_PHA_NONE = 0,
405 SSL_PHA_EXT_SENT, /* client-side only: extension sent */
406 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
407 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
408 SSL_PHA_REQUESTED /* request received by client, or sent by server */
409} SSL_PHA_STATE;
410
411/* CipherSuite length. SSLv3 and all TLS versions. */
412# define TLS_CIPHER_LEN 2
413/* used to hold info on the particular ciphers used */
414struct ssl_cipher_st {
415 uint32_t valid;
416 const char *name; /* text name */
417 const char *stdname; /* RFC name */
418 uint32_t id; /* id, 4 bytes, first is version */
419 /*
420 * changed in 1.0.0: these four used to be portions of a single value
421 * 'algorithms'
422 */
423 uint32_t algorithm_mkey; /* key exchange algorithm */
424 uint32_t algorithm_auth; /* server authentication */
425 uint32_t algorithm_enc; /* symmetric encryption */
426 uint32_t algorithm_mac; /* symmetric authentication */
427 int min_tls; /* minimum SSL/TLS protocol version */
428 int max_tls; /* maximum SSL/TLS protocol version */
429 int min_dtls; /* minimum DTLS protocol version */
430 int max_dtls; /* maximum DTLS protocol version */
431 uint32_t algo_strength; /* strength and export flags */
432 uint32_t algorithm2; /* Extra flags */
433 int32_t strength_bits; /* Number of bits really used */
434 uint32_t alg_bits; /* Number of bits for algorithm */
435};
436
437/* Used to hold SSL/TLS functions */
438struct ssl_method_st {
439 int version;
440 unsigned flags;
441 unsigned long mask;
442 int (*ssl_new) (SSL *s);
443 int (*ssl_clear) (SSL *s);
444 void (*ssl_free) (SSL *s);
445 int (*ssl_accept) (SSL *s);
446 int (*ssl_connect) (SSL *s);
447 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
448 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
449 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
450 int (*ssl_shutdown) (SSL *s);
451 int (*ssl_renegotiate) (SSL *s);
452 int (*ssl_renegotiate_check) (SSL *s, int);
453 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
454 unsigned char *buf, size_t len, int peek,
455 size_t *readbytes);
456 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
457 size_t *written);
458 int (*ssl_dispatch_alert) (SSL *s);
459 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
460 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
461 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
462 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
463 size_t *len);
464 size_t (*ssl_pending) (const SSL *s);
465 int (*num_ciphers) (void);
466 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
467 long (*get_timeout) (void);
468 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
469 int (*ssl_version) (void);
470 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
471 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
472};
473
474/*
475 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
476 * consistency, even in the event of OPENSSL_NO_PSK being defined.
477 */
478# define TLS13_MAX_RESUMPTION_PSK_LENGTH 256
479
480/*-
481 * Lets make this into an ASN.1 type structure as follows
482 * SSL_SESSION_ID ::= SEQUENCE {
483 * version INTEGER, -- structure version number
484 * SSLversion INTEGER, -- SSL version number
485 * Cipher OCTET STRING, -- the 3 byte cipher ID
486 * Session_ID OCTET STRING, -- the Session ID
487 * Master_key OCTET STRING, -- the master key
488 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
489 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
490 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
491 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
492 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
493 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
494 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
495 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
496 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
497 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
498 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
499 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
500 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
501 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
502 * }
503 * Look in ssl/ssl_asn1.c for more details
504 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
505 */
506struct ssl_session_st {
507 int ssl_version; /* what ssl version session info is being kept
508 * in here? */
509 size_t master_key_length;
510
511 /* TLSv1.3 early_secret used for external PSKs */
512 unsigned char early_secret[EVP_MAX_MD_SIZE];
513 /*
514 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
515 * PSK
516 */
517 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
518 /* session_id - valid? */
519 size_t session_id_length;
520 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
521 /*
522 * this is used to determine whether the session is being reused in the
523 * appropriate context. It is up to the application to set this, via
524 * SSL_new
525 */
526 size_t sid_ctx_length;
527 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
528# ifndef OPENSSL_NO_PSK
529 char *psk_identity_hint;
530 char *psk_identity;
531# endif
532 /*
533 * Used to indicate that session resumption is not allowed. Applications
534 * can also set this bit for a new session via not_resumable_session_cb
535 * to disable session caching and tickets.
536 */
537 int not_resumable;
538 /* This is the cert and type for the other end. */
539 X509 *peer;
540 /* Certificate chain peer sent. */
541 STACK_OF(X509) *peer_chain;
542 /*
543 * when app_verify_callback accepts a session where the peer's
544 * certificate is not ok, we must remember the error for session reuse:
545 */
546 long verify_result; /* only for servers */
547 CRYPTO_REF_COUNT references;
548 long timeout;
549 long time;
550 unsigned int compress_meth; /* Need to lookup the method */
551 const SSL_CIPHER *cipher;
552 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
553 * load the 'cipher' structure */
554 CRYPTO_EX_DATA ex_data; /* application specific data */
555 /*
556 * These are used to make removal of session-ids more efficient and to
557 * implement a maximum cache size.
558 */
559 struct ssl_session_st *prev, *next;
560
561 struct {
562 char *hostname;
563 /* RFC4507 info */
564 unsigned char *tick; /* Session ticket */
565 size_t ticklen; /* Session ticket length */
566 /* Session lifetime hint in seconds */
567 unsigned long tick_lifetime_hint;
568 uint32_t tick_age_add;
569 /* Max number of bytes that can be sent as early data */
570 uint32_t max_early_data;
571 /* The ALPN protocol selected for this session */
572 unsigned char *alpn_selected;
573 size_t alpn_selected_len;
574 /*
575 * Maximum Fragment Length as per RFC 4366.
576 * If this value does not contain RFC 4366 allowed values (1-4) then
577 * either the Maximum Fragment Length Negotiation failed or was not
578 * performed at all.
579 */
580 uint8_t max_fragment_len_mode;
581 } ext;
582# ifndef OPENSSL_NO_SRP
583 char *srp_username;
584# endif
585 unsigned char *ticket_appdata;
586 size_t ticket_appdata_len;
587 uint32_t flags;
588 CRYPTO_RWLOCK *lock;
589};
590
591/* Extended master secret support */
592# define SSL_SESS_FLAG_EXTMS 0x1
593
594# ifndef OPENSSL_NO_SRP
595
596typedef struct srp_ctx_st {
597 /* param for all the callbacks */
598 void *SRP_cb_arg;
599 /* set client Hello login callback */
600 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
601 /* set SRP N/g param callback for verification */
602 int (*SRP_verify_param_callback) (SSL *, void *);
603 /* set SRP client passwd callback */
604 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
605 char *login;
606 BIGNUM *N, *g, *s, *B, *A;
607 BIGNUM *a, *b, *v;
608 char *info;
609 int strength;
610 unsigned long srp_Mask;
611} SRP_CTX;
612
613# endif
614
615typedef enum {
616 SSL_EARLY_DATA_NONE = 0,
617 SSL_EARLY_DATA_CONNECT_RETRY,
618 SSL_EARLY_DATA_CONNECTING,
619 SSL_EARLY_DATA_WRITE_RETRY,
620 SSL_EARLY_DATA_WRITING,
621 SSL_EARLY_DATA_WRITE_FLUSH,
622 SSL_EARLY_DATA_UNAUTH_WRITING,
623 SSL_EARLY_DATA_FINISHED_WRITING,
624 SSL_EARLY_DATA_ACCEPT_RETRY,
625 SSL_EARLY_DATA_ACCEPTING,
626 SSL_EARLY_DATA_READ_RETRY,
627 SSL_EARLY_DATA_READING,
628 SSL_EARLY_DATA_FINISHED_READING
629} SSL_EARLY_DATA_STATE;
630
631/*
632 * We check that the amount of unreadable early data doesn't exceed
633 * max_early_data. max_early_data is given in plaintext bytes. However if it is
634 * unreadable then we only know the number of ciphertext bytes. We also don't
635 * know how much the overhead should be because it depends on the ciphersuite.
636 * We make a small allowance. We assume 5 records of actual data plus the end
637 * of early data alert record. Each record has a tag and a content type byte.
638 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
639 * content of the alert record either which is 2 bytes.
640 */
641# define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
642
643/*
644 * The allowance we have between the client's calculated ticket age and our own.
645 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
646 * client's age calculation is different by more than this than our own then we
647 * do not allow that ticket for early_data.
648 */
649# define TICKET_AGE_ALLOWANCE (10 * 1000)
650
651#define MAX_COMPRESSIONS_SIZE 255
652
653struct ssl_comp_st {
654 int id;
655 const char *name;
656 COMP_METHOD *method;
657};
658
659typedef struct raw_extension_st {
660 /* Raw packet data for the extension */
661 PACKET data;
662 /* Set to 1 if the extension is present or 0 otherwise */
663 int present;
664 /* Set to 1 if we have already parsed the extension or 0 otherwise */
665 int parsed;
666 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
667 unsigned int type;
668 /* Track what order extensions are received in (0-based). */
669 size_t received_order;
670} RAW_EXTENSION;
671
672typedef struct {
673 unsigned int isv2;
674 unsigned int legacy_version;
675 unsigned char random[SSL3_RANDOM_SIZE];
676 size_t session_id_len;
677 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
678 size_t dtls_cookie_len;
679 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
680 PACKET ciphersuites;
681 size_t compressions_len;
682 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
683 PACKET extensions;
684 size_t pre_proc_exts_len;
685 RAW_EXTENSION *pre_proc_exts;
686} CLIENTHELLO_MSG;
687
688/*
689 * Extension index values NOTE: Any updates to these defines should be mirrored
690 * with equivalent updates to ext_defs in extensions.c
691 */
692typedef enum tlsext_index_en {
693 TLSEXT_IDX_renegotiate,
694 TLSEXT_IDX_server_name,
695 TLSEXT_IDX_max_fragment_length,
696 TLSEXT_IDX_srp,
697 TLSEXT_IDX_ec_point_formats,
698 TLSEXT_IDX_supported_groups,
699 TLSEXT_IDX_session_ticket,
700 TLSEXT_IDX_status_request,
701 TLSEXT_IDX_next_proto_neg,
702 TLSEXT_IDX_application_layer_protocol_negotiation,
703 TLSEXT_IDX_use_srtp,
704 TLSEXT_IDX_encrypt_then_mac,
705 TLSEXT_IDX_signed_certificate_timestamp,
706 TLSEXT_IDX_extended_master_secret,
707 TLSEXT_IDX_signature_algorithms_cert,
708 TLSEXT_IDX_post_handshake_auth,
709 TLSEXT_IDX_signature_algorithms,
710 TLSEXT_IDX_supported_versions,
711 TLSEXT_IDX_psk_kex_modes,
712 TLSEXT_IDX_key_share,
713 TLSEXT_IDX_cookie,
714 TLSEXT_IDX_cryptopro_bug,
715 TLSEXT_IDX_early_data,
716 TLSEXT_IDX_certificate_authorities,
717 TLSEXT_IDX_padding,
718 TLSEXT_IDX_psk,
719 /* Dummy index - must always be the last entry */
720 TLSEXT_IDX_num_builtins
721} TLSEXT_INDEX;
722
723DEFINE_LHASH_OF(SSL_SESSION);
724/* Needed in ssl_cert.c */
725DEFINE_LHASH_OF(X509_NAME);
726
727# define TLSEXT_KEYNAME_LENGTH 16
728# define TLSEXT_TICK_KEY_LENGTH 32
729
730typedef struct ssl_ctx_ext_secure_st {
731 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
732 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
733} SSL_CTX_EXT_SECURE;
734
735struct ssl_ctx_st {
736 const SSL_METHOD *method;
737 STACK_OF(SSL_CIPHER) *cipher_list;
738 /* same as above but sorted for lookup */
739 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
740 /* TLSv1.3 specific ciphersuites */
741 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
742 struct x509_store_st /* X509_STORE */ *cert_store;
743 LHASH_OF(SSL_SESSION) *sessions;
744 /*
745 * Most session-ids that will be cached, default is
746 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
747 */
748 size_t session_cache_size;
749 struct ssl_session_st *session_cache_head;
750 struct ssl_session_st *session_cache_tail;
751 /*
752 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
753 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
754 * means only SSL_accept will cache SSL_SESSIONS.
755 */
756 uint32_t session_cache_mode;
757 /*
758 * If timeout is not 0, it is the default timeout value set when
759 * SSL_new() is called. This has been put in to make life easier to set
760 * things up
761 */
762 long session_timeout;
763 /*
764 * If this callback is not null, it will be called each time a session id
765 * is added to the cache. If this function returns 1, it means that the
766 * callback will do a SSL_SESSION_free() when it has finished using it.
767 * Otherwise, on 0, it means the callback has finished with it. If
768 * remove_session_cb is not null, it will be called when a session-id is
769 * removed from the cache. After the call, OpenSSL will
770 * SSL_SESSION_free() it.
771 */
772 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
773 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
774 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
775 const unsigned char *data, int len,
776 int *copy);
777 struct {
778 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
779 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
780 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
781 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
782 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
783 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
784 TSAN_QUALIFIER int sess_miss; /* session lookup misses */
785 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
786 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
787 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
788 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
789 * the cache was passed back via
790 * the callback. This indicates
791 * that the application is
792 * supplying session-id's from
793 * other processes - spooky
794 * :-) */
795 } stats;
796
797 CRYPTO_REF_COUNT references;
798
799 /* if defined, these override the X509_verify_cert() calls */
800 int (*app_verify_callback) (X509_STORE_CTX *, void *);
801 void *app_verify_arg;
802 /*
803 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
804 * ('app_verify_callback' was called with just one argument)
805 */
806
807 /* Default password callback. */
808 pem_password_cb *default_passwd_callback;
809
810 /* Default password callback user data. */
811 void *default_passwd_callback_userdata;
812
813 /* get client cert callback */
814 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
815
816 /* cookie generate callback */
817 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
818 unsigned int *cookie_len);
819
820 /* verify cookie callback */
821 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
822 unsigned int cookie_len);
823
824 /* TLS1.3 app-controlled cookie generate callback */
825 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
826 size_t *cookie_len);
827
828 /* TLS1.3 verify app-controlled cookie callback */
829 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
830 size_t cookie_len);
831
832 CRYPTO_EX_DATA ex_data;
833
834 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
835 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
836
837 STACK_OF(X509) *extra_certs;
838 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
839
840 /* Default values used when no per-SSL value is defined follow */
841
842 /* used if SSL's info_callback is NULL */
843 void (*info_callback) (const SSL *ssl, int type, int val);
844
845 /*
846 * What we put in certificate_authorities extension for TLS 1.3
847 * (ClientHello and CertificateRequest) or just client cert requests for
848 * earlier versions. If client_ca_names is populated then it is only used
849 * for client cert requests, and in preference to ca_names.
850 */
851 STACK_OF(X509_NAME) *ca_names;
852 STACK_OF(X509_NAME) *client_ca_names;
853
854 /*
855 * Default values to use in SSL structures follow (these are copied by
856 * SSL_new)
857 */
858
859 uint32_t options;
860 uint32_t mode;
861 int min_proto_version;
862 int max_proto_version;
863 size_t max_cert_list;
864
865 struct cert_st /* CERT */ *cert;
866 int read_ahead;
867
868 /* callback that allows applications to peek at protocol messages */
869 void (*msg_callback) (int write_p, int version, int content_type,
870 const void *buf, size_t len, SSL *ssl, void *arg);
871 void *msg_callback_arg;
872
873 uint32_t verify_mode;
874 size_t sid_ctx_length;
875 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
876 /* called 'verify_callback' in the SSL */
877 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
878
879 /* Default generate session ID callback. */
880 GEN_SESSION_CB generate_session_id;
881
882 X509_VERIFY_PARAM *param;
883
884 int quiet_shutdown;
885
886# ifndef OPENSSL_NO_CT
887 CTLOG_STORE *ctlog_store; /* CT Log Store */
888 /*
889 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
890 * If they are not, the connection should be aborted.
891 */
892 ssl_ct_validation_cb ct_validation_callback;
893 void *ct_validation_callback_arg;
894# endif
895
896 /*
897 * If we're using more than one pipeline how should we divide the data
898 * up between the pipes?
899 */
900 size_t split_send_fragment;
901 /*
902 * Maximum amount of data to send in one fragment. actual record size can
903 * be more than this due to padding and MAC overheads.
904 */
905 size_t max_send_fragment;
906
907 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
908 size_t max_pipelines;
909
910 /* The default read buffer length to use (0 means not set) */
911 size_t default_read_buf_len;
912
913# ifndef OPENSSL_NO_ENGINE
914 /*
915 * Engine to pass requests for client certs to
916 */
917 ENGINE *client_cert_engine;
918# endif
919
920 /* ClientHello callback. Mostly for extensions, but not entirely. */
921 SSL_client_hello_cb_fn client_hello_cb;
922 void *client_hello_cb_arg;
923
924 /* TLS extensions. */
925 struct {
926 /* TLS extensions servername callback */
927 int (*servername_cb) (SSL *, int *, void *);
928 void *servername_arg;
929 /* RFC 4507 session ticket keys */
930 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
931 SSL_CTX_EXT_SECURE *secure;
932 /* Callback to support customisation of ticket key setting */
933 int (*ticket_key_cb) (SSL *ssl,
934 unsigned char *name, unsigned char *iv,
935 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
936
937 /* certificate status request info */
938 /* Callback for status request */
939 int (*status_cb) (SSL *ssl, void *arg);
940 void *status_arg;
941 /* ext status type used for CSR extension (OCSP Stapling) */
942 int status_type;
943 /* RFC 4366 Maximum Fragment Length Negotiation */
944 uint8_t max_fragment_len_mode;
945
946# ifndef OPENSSL_NO_EC
947 /* EC extension values inherited by SSL structure */
948 size_t ecpointformats_len;
949 unsigned char *ecpointformats;
950 size_t supportedgroups_len;
951 uint16_t *supportedgroups;
952# endif /* OPENSSL_NO_EC */
953
954 /*
955 * ALPN information (we are in the process of transitioning from NPN to
956 * ALPN.)
957 */
958
959 /*-
960 * For a server, this contains a callback function that allows the
961 * server to select the protocol for the connection.
962 * out: on successful return, this must point to the raw protocol
963 * name (without the length prefix).
964 * outlen: on successful return, this contains the length of |*out|.
965 * in: points to the client's list of supported protocols in
966 * wire-format.
967 * inlen: the length of |in|.
968 */
969 int (*alpn_select_cb) (SSL *s,
970 const unsigned char **out,
971 unsigned char *outlen,
972 const unsigned char *in,
973 unsigned int inlen, void *arg);
974 void *alpn_select_cb_arg;
975
976 /*
977 * For a client, this contains the list of supported protocols in wire
978 * format.
979 */
980 unsigned char *alpn;
981 size_t alpn_len;
982
983# ifndef OPENSSL_NO_NEXTPROTONEG
984 /* Next protocol negotiation information */
985
986 /*
987 * For a server, this contains a callback function by which the set of
988 * advertised protocols can be provided.
989 */
990 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
991 void *npn_advertised_cb_arg;
992 /*
993 * For a client, this contains a callback function that selects the next
994 * protocol from the list provided by the server.
995 */
996 SSL_CTX_npn_select_cb_func npn_select_cb;
997 void *npn_select_cb_arg;
998# endif
999
1000 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
1001 } ext;
1002
1003# ifndef OPENSSL_NO_PSK
1004 SSL_psk_client_cb_func psk_client_callback;
1005 SSL_psk_server_cb_func psk_server_callback;
1006# endif
1007 SSL_psk_find_session_cb_func psk_find_session_cb;
1008 SSL_psk_use_session_cb_func psk_use_session_cb;
1009
1010# ifndef OPENSSL_NO_SRP
1011 SRP_CTX srp_ctx; /* ctx for SRP authentication */
1012# endif
1013
1014 /* Shared DANE context */
1015 struct dane_ctx_st dane;
1016
1017# ifndef OPENSSL_NO_SRTP
1018 /* SRTP profiles we are willing to do from RFC 5764 */
1019 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1020# endif
1021 /*
1022 * Callback for disabling session caching and ticket support on a session
1023 * basis, depending on the chosen cipher.
1024 */
1025 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1026
1027 CRYPTO_RWLOCK *lock;
1028
1029 /*
1030 * Callback for logging key material for use with debugging tools like
1031 * Wireshark. The callback should log `line` followed by a newline.
1032 */
1033 SSL_CTX_keylog_cb_func keylog_callback;
1034
1035 /*
1036 * The maximum number of bytes advertised in session tickets that can be
1037 * sent as early data.
1038 */
1039 uint32_t max_early_data;
1040
1041 /*
1042 * The maximum number of bytes of early data that a server will tolerate
1043 * (which should be at least as much as max_early_data).
1044 */
1045 uint32_t recv_max_early_data;
1046
1047 /* TLS1.3 padding callback */
1048 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1049 void *record_padding_arg;
1050 size_t block_padding;
1051
1052 /* Session ticket appdata */
1053 SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
1054 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
1055 void *ticket_cb_data;
1056
1057 /* The number of TLS1.3 tickets to automatically send */
1058 size_t num_tickets;
1059
1060 /* Callback to determine if early_data is acceptable or not */
1061 SSL_allow_early_data_cb_fn allow_early_data_cb;
1062 void *allow_early_data_cb_data;
1063
1064 /* Do we advertise Post-handshake auth support? */
1065 int pha_enabled;
1066};
1067
1068struct ssl_st {
1069 /*
1070 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1071 * DTLS1_VERSION)
1072 */
1073 int version;
1074 /* SSLv3 */
1075 const SSL_METHOD *method;
1076 /*
1077 * There are 2 BIO's even though they are normally both the same. This
1078 * is so data can be read and written to different handlers
1079 */
1080 /* used by SSL_read */
1081 BIO *rbio;
1082 /* used by SSL_write */
1083 BIO *wbio;
1084 /* used during session-id reuse to concatenate messages */
1085 BIO *bbio;
1086 /*
1087 * This holds a variable that indicates what we were doing when a 0 or -1
1088 * is returned. This is needed for non-blocking IO so we know what
1089 * request needs re-doing when in SSL_accept or SSL_connect
1090 */
1091 int rwstate;
1092 int (*handshake_func) (SSL *);
1093 /*
1094 * Imagine that here's a boolean member "init" that is switched as soon
1095 * as SSL_set_{accept/connect}_state is called for the first time, so
1096 * that "state" and "handshake_func" are properly initialized. But as
1097 * handshake_func is == 0 until then, we use this test instead of an
1098 * "init" member.
1099 */
1100 /* are we the server side? */
1101 int server;
1102 /*
1103 * Generate a new session or reuse an old one.
1104 * NB: For servers, the 'new' session may actually be a previously
1105 * cached session or even the previous session unless
1106 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1107 */
1108 int new_session;
1109 /* don't send shutdown packets */
1110 int quiet_shutdown;
1111 /* we have shut things down, 0x01 sent, 0x02 for received */
1112 int shutdown;
1113 /* where we are */
1114 OSSL_STATEM statem;
1115 SSL_EARLY_DATA_STATE early_data_state;
1116 BUF_MEM *init_buf; /* buffer used during init */
1117 void *init_msg; /* pointer to handshake message body, set by
1118 * ssl3_get_message() */
1119 size_t init_num; /* amount read/written */
1120 size_t init_off; /* amount read/written */
1121 struct ssl3_state_st *s3; /* SSLv3 variables */
1122 struct dtls1_state_st *d1; /* DTLSv1 variables */
1123 /* callback that allows applications to peek at protocol messages */
1124 void (*msg_callback) (int write_p, int version, int content_type,
1125 const void *buf, size_t len, SSL *ssl, void *arg);
1126 void *msg_callback_arg;
1127 int hit; /* reusing a previous session */
1128 X509_VERIFY_PARAM *param;
1129 /* Per connection DANE state */
1130 SSL_DANE dane;
1131 /* crypto */
1132 STACK_OF(SSL_CIPHER) *peer_ciphers;
1133 STACK_OF(SSL_CIPHER) *cipher_list;
1134 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1135 /* TLSv1.3 specific ciphersuites */
1136 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
1137 /*
1138 * These are the ones being used, the ones in SSL_SESSION are the ones to
1139 * be 'copied' into these ones
1140 */
1141 uint32_t mac_flags;
1142 /*
1143 * The TLS1.3 secrets.
1144 */
1145 unsigned char early_secret[EVP_MAX_MD_SIZE];
1146 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1147 unsigned char master_secret[EVP_MAX_MD_SIZE];
1148 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
1149 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1150 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1151 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1152 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1153 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1154 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1155 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1156 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
1157 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1158 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
1159 EVP_MD_CTX *read_hash; /* used for mac generation */
1160 COMP_CTX *compress; /* compression */
1161 COMP_CTX *expand; /* uncompress */
1162 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1163 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
1164 EVP_MD_CTX *write_hash; /* used for mac generation */
1165 /* session info */
1166 /* client cert? */
1167 /* This is used to hold the server certificate used */
1168 struct cert_st /* CERT */ *cert;
1169
1170 /*
1171 * The hash of all messages prior to the CertificateVerify, and the length
1172 * of that hash.
1173 */
1174 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1175 size_t cert_verify_hash_len;
1176
1177 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1178 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE}
1179 hello_retry_request;
1180
1181 /*
1182 * the session_id_context is used to ensure sessions are only reused in
1183 * the appropriate context
1184 */
1185 size_t sid_ctx_length;
1186 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1187 /* This can also be in the session once a session is established */
1188 SSL_SESSION *session;
1189 /* TLSv1.3 PSK session */
1190 SSL_SESSION *psksession;
1191 unsigned char *psksession_id;
1192 size_t psksession_id_len;
1193 /* Default generate session ID callback. */
1194 GEN_SESSION_CB generate_session_id;
1195 /*
1196 * The temporary TLSv1.3 session id. This isn't really a session id at all
1197 * but is a random value sent in the legacy session id field.
1198 */
1199 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
1200 size_t tmp_session_id_len;
1201 /* Used in SSL3 */
1202 /*
1203 * 0 don't care about verify failure.
1204 * 1 fail if verify fails
1205 */
1206 uint32_t verify_mode;
1207 /* fail if callback returns 0 */
1208 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1209 /* optional informational callback */
1210 void (*info_callback) (const SSL *ssl, int type, int val);
1211 /* error bytes to be written */
1212 int error;
1213 /* actual code */
1214 int error_code;
1215# ifndef OPENSSL_NO_PSK
1216 SSL_psk_client_cb_func psk_client_callback;
1217 SSL_psk_server_cb_func psk_server_callback;
1218# endif
1219 SSL_psk_find_session_cb_func psk_find_session_cb;
1220 SSL_psk_use_session_cb_func psk_use_session_cb;
1221
1222 SSL_CTX *ctx;
1223 /* Verified chain of peer */
1224 STACK_OF(X509) *verified_chain;
1225 long verify_result;
1226 /* extra application data */
1227 CRYPTO_EX_DATA ex_data;
1228 /*
1229 * What we put in certificate_authorities extension for TLS 1.3
1230 * (ClientHello and CertificateRequest) or just client cert requests for
1231 * earlier versions. If client_ca_names is populated then it is only used
1232 * for client cert requests, and in preference to ca_names.
1233 */
1234 STACK_OF(X509_NAME) *ca_names;
1235 STACK_OF(X509_NAME) *client_ca_names;
1236 CRYPTO_REF_COUNT references;
1237 /* protocol behaviour */
1238 uint32_t options;
1239 /* API behaviour */
1240 uint32_t mode;
1241 int min_proto_version;
1242 int max_proto_version;
1243 size_t max_cert_list;
1244 int first_packet;
1245 /*
1246 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1247 * secret and SSLv3/TLS (<=1.2) rollback check
1248 */
1249 int client_version;
1250 /*
1251 * If we're using more than one pipeline how should we divide the data
1252 * up between the pipes?
1253 */
1254 size_t split_send_fragment;
1255 /*
1256 * Maximum amount of data to send in one fragment. actual record size can
1257 * be more than this due to padding and MAC overheads.
1258 */
1259 size_t max_send_fragment;
1260 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1261 size_t max_pipelines;
1262
1263 struct {
1264 /* Built-in extension flags */
1265 uint8_t extflags[TLSEXT_IDX_num_builtins];
1266 /* TLS extension debug callback */
1267 void (*debug_cb)(SSL *s, int client_server, int type,
1268 const unsigned char *data, int len, void *arg);
1269 void *debug_arg;
1270 char *hostname;
1271 /* certificate status request info */
1272 /* Status type or -1 if no status type */
1273 int status_type;
1274 /* Raw extension data, if seen */
1275 unsigned char *scts;
1276 /* Length of raw extension data, if seen */
1277 uint16_t scts_len;
1278 /* Expect OCSP CertificateStatus message */
1279 int status_expected;
1280
1281 struct {
1282 /* OCSP status request only */
1283 STACK_OF(OCSP_RESPID) *ids;
1284 X509_EXTENSIONS *exts;
1285 /* OCSP response received or to be sent */
1286 unsigned char *resp;
1287 size_t resp_len;
1288 } ocsp;
1289
1290 /* RFC4507 session ticket expected to be received or sent */
1291 int ticket_expected;
1292# ifndef OPENSSL_NO_EC
1293 size_t ecpointformats_len;
1294 /* our list */
1295 unsigned char *ecpointformats;
1296
1297 size_t peer_ecpointformats_len;
1298 /* peer's list */
1299 unsigned char *peer_ecpointformats;
1300# endif /* OPENSSL_NO_EC */
1301 size_t supportedgroups_len;
1302 /* our list */
1303 uint16_t *supportedgroups;
1304
1305 size_t peer_supportedgroups_len;
1306 /* peer's list */
1307 uint16_t *peer_supportedgroups;
1308
1309 /* TLS Session Ticket extension override */
1310 TLS_SESSION_TICKET_EXT *session_ticket;
1311 /* TLS Session Ticket extension callback */
1312 tls_session_ticket_ext_cb_fn session_ticket_cb;
1313 void *session_ticket_cb_arg;
1314 /* TLS pre-shared secret session resumption */
1315 tls_session_secret_cb_fn session_secret_cb;
1316 void *session_secret_cb_arg;
1317 /*
1318 * For a client, this contains the list of supported protocols in wire
1319 * format.
1320 */
1321 unsigned char *alpn;
1322 size_t alpn_len;
1323 /*
1324 * Next protocol negotiation. For the client, this is the protocol that
1325 * we sent in NextProtocol and is set when handling ServerHello
1326 * extensions. For a server, this is the client's selected_protocol from
1327 * NextProtocol and is set when handling the NextProtocol message, before
1328 * the Finished message.
1329 */
1330 unsigned char *npn;
1331 size_t npn_len;
1332
1333 /* The available PSK key exchange modes */
1334 int psk_kex_mode;
1335
1336 /* Set to one if we have negotiated ETM */
1337 int use_etm;
1338
1339 /* Are we expecting to receive early data? */
1340 int early_data;
1341 /* Is the session suitable for early data? */
1342 int early_data_ok;
1343
1344 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1345 unsigned char *tls13_cookie;
1346 size_t tls13_cookie_len;
1347 /* Have we received a cookie from the client? */
1348 int cookieok;
1349
1350 /*
1351 * Maximum Fragment Length as per RFC 4366.
1352 * If this member contains one of the allowed values (1-4)
1353 * then we should include Maximum Fragment Length Negotiation
1354 * extension in Client Hello.
1355 * Please note that value of this member does not have direct
1356 * effect. The actual (binding) value is stored in SSL_SESSION,
1357 * as this extension is optional on server side.
1358 */
1359 uint8_t max_fragment_len_mode;
1360
1361 /*
1362 * On the client side the number of ticket identities we sent in the
1363 * ClientHello. On the server side the identity of the ticket we
1364 * selected.
1365 */
1366 int tick_identity;
1367 } ext;
1368
1369 /*
1370 * Parsed form of the ClientHello, kept around across client_hello_cb
1371 * calls.
1372 */
1373 CLIENTHELLO_MSG *clienthello;
1374
1375 /*-
1376 * no further mod of servername
1377 * 0 : call the servername extension callback.
1378 * 1 : prepare 2, allow last ack just after in server callback.
1379 * 2 : don't call servername callback, no ack in server hello
1380 */
1381 int servername_done;
1382# ifndef OPENSSL_NO_CT
1383 /*
1384 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1385 * If they are not, the connection should be aborted.
1386 */
1387 ssl_ct_validation_cb ct_validation_callback;
1388 /* User-supplied argument that is passed to the ct_validation_callback */
1389 void *ct_validation_callback_arg;
1390 /*
1391 * Consolidated stack of SCTs from all sources.
1392 * Lazily populated by CT_get_peer_scts(SSL*)
1393 */
1394 STACK_OF(SCT) *scts;
1395 /* Have we attempted to find/parse SCTs yet? */
1396 int scts_parsed;
1397# endif
1398 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1399# ifndef OPENSSL_NO_SRTP
1400 /* What we'll do */
1401 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1402 /* What's been chosen */
1403 SRTP_PROTECTION_PROFILE *srtp_profile;
1404# endif
1405 /*-
1406 * 1 if we are renegotiating.
1407 * 2 if we are a server and are inside a handshake
1408 * (i.e. not just sending a HelloRequest)
1409 */
1410 int renegotiate;
1411 /* If sending a KeyUpdate is pending */
1412 int key_update;
1413 /* Post-handshake authentication state */
1414 SSL_PHA_STATE post_handshake_auth;
1415 int pha_enabled;
1416 uint8_t* pha_context;
1417 size_t pha_context_len;
1418 int certreqs_sent;
1419 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
1420
1421# ifndef OPENSSL_NO_SRP
1422 /* ctx for SRP authentication */
1423 SRP_CTX srp_ctx;
1424# endif
1425 /*
1426 * Callback for disabling session caching and ticket support on a session
1427 * basis, depending on the chosen cipher.
1428 */
1429 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1430 RECORD_LAYER rlayer;
1431 /* Default password callback. */
1432 pem_password_cb *default_passwd_callback;
1433 /* Default password callback user data. */
1434 void *default_passwd_callback_userdata;
1435 /* Async Job info */
1436 ASYNC_JOB *job;
1437 ASYNC_WAIT_CTX *waitctx;
1438 size_t asyncrw;
1439
1440 /*
1441 * The maximum number of bytes advertised in session tickets that can be
1442 * sent as early data.
1443 */
1444 uint32_t max_early_data;
1445 /*
1446 * The maximum number of bytes of early data that a server will tolerate
1447 * (which should be at least as much as max_early_data).
1448 */
1449 uint32_t recv_max_early_data;
1450
1451 /*
1452 * The number of bytes of early data received so far. If we accepted early
1453 * data then this is a count of the plaintext bytes. If we rejected it then
1454 * this is a count of the ciphertext bytes.
1455 */
1456 uint32_t early_data_count;
1457
1458 /* TLS1.3 padding callback */
1459 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1460 void *record_padding_arg;
1461 size_t block_padding;
1462
1463 CRYPTO_RWLOCK *lock;
1464
1465 /* The number of TLS1.3 tickets to automatically send */
1466 size_t num_tickets;
1467 /* The number of TLS1.3 tickets actually sent so far */
1468 size_t sent_tickets;
1469 /* The next nonce value to use when we send a ticket on this connection */
1470 uint64_t next_ticket_nonce;
1471
1472 /* Callback to determine if early_data is acceptable or not */
1473 SSL_allow_early_data_cb_fn allow_early_data_cb;
1474 void *allow_early_data_cb_data;
1475
1476 /*
1477 * Signature algorithms shared by client and server: cached because these
1478 * are used most often.
1479 */
1480 const struct sigalg_lookup_st **shared_sigalgs;
1481 size_t shared_sigalgslen;
1482};
1483
1484/*
1485 * Structure containing table entry of values associated with the signature
1486 * algorithms (signature scheme) extension
1487*/
1488typedef struct sigalg_lookup_st {
1489 /* TLS 1.3 signature scheme name */
1490 const char *name;
1491 /* Raw value used in extension */
1492 uint16_t sigalg;
1493 /* NID of hash algorithm or NID_undef if no hash */
1494 int hash;
1495 /* Index of hash algorithm or -1 if no hash algorithm */
1496 int hash_idx;
1497 /* NID of signature algorithm */
1498 int sig;
1499 /* Index of signature algorithm */
1500 int sig_idx;
1501 /* Combined hash and signature NID, if any */
1502 int sigandhash;
1503 /* Required public key curve (ECDSA only) */
1504 int curve;
1505} SIGALG_LOOKUP;
1506
1507typedef struct tls_group_info_st {
1508 int nid; /* Curve NID */
1509 int secbits; /* Bits of security (from SP800-57) */
1510 uint16_t flags; /* Flags: currently just group type */
1511} TLS_GROUP_INFO;
1512
1513/* flags values */
1514# define TLS_CURVE_TYPE 0x3 /* Mask for group type */
1515# define TLS_CURVE_PRIME 0x0
1516# define TLS_CURVE_CHAR2 0x1
1517# define TLS_CURVE_CUSTOM 0x2
1518
1519typedef struct cert_pkey_st CERT_PKEY;
1520
1521/*
1522 * Structure containing table entry of certificate info corresponding to
1523 * CERT_PKEY entries
1524 */
1525typedef struct {
1526 int nid; /* NID of public key algorithm */
1527 uint32_t amask; /* authmask corresponding to key type */
1528} SSL_CERT_LOOKUP;
1529
1530typedef struct ssl3_state_st {
1531 long flags;
1532 size_t read_mac_secret_size;
1533 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1534 size_t write_mac_secret_size;
1535 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1536 unsigned char server_random[SSL3_RANDOM_SIZE];
1537 unsigned char client_random[SSL3_RANDOM_SIZE];
1538 /* flags for countermeasure against known-IV weakness */
1539 int need_empty_fragments;
1540 int empty_fragment_done;
1541 /* used during startup, digest all incoming/outgoing packets */
1542 BIO *handshake_buffer;
1543 /*
1544 * When handshake digest is determined, buffer is hashed and
1545 * freed and MD_CTX for the required digest is stored here.
1546 */
1547 EVP_MD_CTX *handshake_dgst;
1548 /*
1549 * Set whenever an expected ChangeCipherSpec message is processed.
1550 * Unset when the peer's Finished message is received.
1551 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1552 */
1553 int change_cipher_spec;
1554 int warn_alert;
1555 int fatal_alert;
1556 /*
1557 * we allow one fatal and one warning alert to be outstanding, send close
1558 * alert via the warning alert
1559 */
1560 int alert_dispatch;
1561 unsigned char send_alert[2];
1562 /*
1563 * This flag is set when we should renegotiate ASAP, basically when there
1564 * is no more data in the read or write buffers
1565 */
1566 int renegotiate;
1567 int total_renegotiations;
1568 int num_renegotiations;
1569 int in_read_app_data;
1570 struct {
1571 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1572 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1573 size_t finish_md_len;
1574 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1575 size_t peer_finish_md_len;
1576 size_t message_size;
1577 int message_type;
1578 /* used to hold the new cipher we are going to use */
1579 const SSL_CIPHER *new_cipher;
1580# if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1581 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1582# endif
1583 /* used for certificate requests */
1584 int cert_req;
1585 /* Certificate types in certificate request message. */
1586 uint8_t *ctype;
1587 size_t ctype_len;
1588 /* Certificate authorities list peer sent */
1589 STACK_OF(X509_NAME) *peer_ca_names;
1590 size_t key_block_length;
1591 unsigned char *key_block;
1592 const EVP_CIPHER *new_sym_enc;
1593 const EVP_MD *new_hash;
1594 int new_mac_pkey_type;
1595 size_t new_mac_secret_size;
1596# ifndef OPENSSL_NO_COMP
1597 const SSL_COMP *new_compression;
1598# else
1599 char *new_compression;
1600# endif
1601 int cert_request;
1602 /* Raw values of the cipher list from a client */
1603 unsigned char *ciphers_raw;
1604 size_t ciphers_rawlen;
1605 /* Temporary storage for premaster secret */
1606 unsigned char *pms;
1607 size_t pmslen;
1608# ifndef OPENSSL_NO_PSK
1609 /* Temporary storage for PSK key */
1610 unsigned char *psk;
1611 size_t psklen;
1612# endif
1613 /* Signature algorithm we actually use */
1614 const SIGALG_LOOKUP *sigalg;
1615 /* Pointer to certificate we use */
1616 CERT_PKEY *cert;
1617 /*
1618 * signature algorithms peer reports: e.g. supported signature
1619 * algorithms extension for server or as part of a certificate
1620 * request for client.
1621 * Keep track of the algorithms for TLS and X.509 usage separately.
1622 */
1623 uint16_t *peer_sigalgs;
1624 uint16_t *peer_cert_sigalgs;
1625 /* Size of above arrays */
1626 size_t peer_sigalgslen;
1627 size_t peer_cert_sigalgslen;
1628 /* Sigalg peer actually uses */
1629 const SIGALG_LOOKUP *peer_sigalg;
1630 /*
1631 * Set if corresponding CERT_PKEY can be used with current
1632 * SSL session: e.g. appropriate curve, signature algorithms etc.
1633 * If zero it can't be used at all.
1634 */
1635 uint32_t valid_flags[SSL_PKEY_NUM];
1636 /*
1637 * For servers the following masks are for the key and auth algorithms
1638 * that are supported by the certs below. For clients they are masks of
1639 * *disabled* algorithms based on the current session.
1640 */
1641 uint32_t mask_k;
1642 uint32_t mask_a;
1643 /*
1644 * The following are used by the client to see if a cipher is allowed or
1645 * not. It contains the minimum and maximum version the client's using
1646 * based on what it knows so far.
1647 */
1648 int min_ver;
1649 int max_ver;
1650 } tmp;
1651
1652 /* Connection binding to prevent renegotiation attacks */
1653 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1654 size_t previous_client_finished_len;
1655 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1656 size_t previous_server_finished_len;
1657 int send_connection_binding; /* TODOEKR */
1658
1659# ifndef OPENSSL_NO_NEXTPROTONEG
1660 /*
1661 * Set if we saw the Next Protocol Negotiation extension from our peer.
1662 */
1663 int npn_seen;
1664# endif
1665
1666 /*
1667 * ALPN information (we are in the process of transitioning from NPN to
1668 * ALPN.)
1669 */
1670
1671 /*
1672 * In a server these point to the selected ALPN protocol after the
1673 * ClientHello has been processed. In a client these contain the protocol
1674 * that the server selected once the ServerHello has been processed.
1675 */
1676 unsigned char *alpn_selected;
1677 size_t alpn_selected_len;
1678 /* used by the server to know what options were proposed */
1679 unsigned char *alpn_proposed;
1680 size_t alpn_proposed_len;
1681 /* used by the client to know if it actually sent alpn */
1682 int alpn_sent;
1683
1684# ifndef OPENSSL_NO_EC
1685 /*
1686 * This is set to true if we believe that this is a version of Safari
1687 * running on OS X 10.6 or newer. We wish to know this because Safari on
1688 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1689 */
1690 char is_probably_safari;
1691# endif /* !OPENSSL_NO_EC */
1692
1693 /* For clients: peer temporary key */
1694# if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1695 /* The group_id for the DH/ECDH key */
1696 uint16_t group_id;
1697 EVP_PKEY *peer_tmp;
1698# endif
1699
1700} SSL3_STATE;
1701
1702/* DTLS structures */
1703
1704# ifndef OPENSSL_NO_SCTP
1705# define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1706# endif
1707
1708/* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1709# define DTLS1_MAX_MTU_OVERHEAD 48
1710
1711/*
1712 * Flag used in message reuse to indicate the buffer contains the record
1713 * header as well as the handshake message header.
1714 */
1715# define DTLS1_SKIP_RECORD_HEADER 2
1716
1717struct dtls1_retransmit_state {
1718 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1719 EVP_MD_CTX *write_hash; /* used for mac generation */
1720 COMP_CTX *compress; /* compression */
1721 SSL_SESSION *session;
1722 unsigned short epoch;
1723};
1724
1725struct hm_header_st {
1726 unsigned char type;
1727 size_t msg_len;
1728 unsigned short seq;
1729 size_t frag_off;
1730 size_t frag_len;
1731 unsigned int is_ccs;
1732 struct dtls1_retransmit_state saved_retransmit_state;
1733};
1734
1735struct dtls1_timeout_st {
1736 /* Number of read timeouts so far */
1737 unsigned int read_timeouts;
1738 /* Number of write timeouts so far */
1739 unsigned int write_timeouts;
1740 /* Number of alerts received so far */
1741 unsigned int num_alerts;
1742};
1743
1744typedef struct hm_fragment_st {
1745 struct hm_header_st msg_header;
1746 unsigned char *fragment;
1747 unsigned char *reassembly;
1748} hm_fragment;
1749
1750typedef struct pqueue_st pqueue;
1751typedef struct pitem_st pitem;
1752
1753struct pitem_st {
1754 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1755 void *data;
1756 pitem *next;
1757};
1758
1759typedef struct pitem_st *piterator;
1760
1761pitem *pitem_new(unsigned char *prio64be, void *data);
1762void pitem_free(pitem *item);
1763pqueue *pqueue_new(void);
1764void pqueue_free(pqueue *pq);
1765pitem *pqueue_insert(pqueue *pq, pitem *item);
1766pitem *pqueue_peek(pqueue *pq);
1767pitem *pqueue_pop(pqueue *pq);
1768pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1769pitem *pqueue_iterator(pqueue *pq);
1770pitem *pqueue_next(piterator *iter);
1771size_t pqueue_size(pqueue *pq);
1772
1773typedef struct dtls1_state_st {
1774 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1775 size_t cookie_len;
1776 unsigned int cookie_verified;
1777 /* handshake message numbers */
1778 unsigned short handshake_write_seq;
1779 unsigned short next_handshake_write_seq;
1780 unsigned short handshake_read_seq;
1781 /* Buffered handshake messages */
1782 pqueue *buffered_messages;
1783 /* Buffered (sent) handshake records */
1784 pqueue *sent_messages;
1785 size_t link_mtu; /* max on-the-wire DTLS packet size */
1786 size_t mtu; /* max DTLS packet size */
1787 struct hm_header_st w_msg_hdr;
1788 struct hm_header_st r_msg_hdr;
1789 struct dtls1_timeout_st timeout;
1790 /*
1791 * Indicates when the last handshake msg sent will timeout
1792 */
1793 struct timeval next_timeout;
1794 /* Timeout duration */
1795 unsigned int timeout_duration_us;
1796
1797 unsigned int retransmitting;
1798# ifndef OPENSSL_NO_SCTP
1799 int shutdown_received;
1800# endif
1801
1802 DTLS_timer_cb timer_cb;
1803
1804} DTLS1_STATE;
1805
1806# ifndef OPENSSL_NO_EC
1807/*
1808 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1809 */
1810# define EXPLICIT_PRIME_CURVE_TYPE 1
1811# define EXPLICIT_CHAR2_CURVE_TYPE 2
1812# define NAMED_CURVE_TYPE 3
1813# endif /* OPENSSL_NO_EC */
1814
1815struct cert_pkey_st {
1816 X509 *x509;
1817 EVP_PKEY *privatekey;
1818 /* Chain for this certificate */
1819 STACK_OF(X509) *chain;
1820 /*-
1821 * serverinfo data for this certificate. The data is in TLS Extension
1822 * wire format, specifically it's a series of records like:
1823 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1824 * uint16_t length;
1825 * uint8_t data[length];
1826 */
1827 unsigned char *serverinfo;
1828 size_t serverinfo_length;
1829};
1830/* Retrieve Suite B flags */
1831# define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1832/* Uses to check strict mode: suite B modes are always strict */
1833# define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1834 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1835
1836typedef enum {
1837 ENDPOINT_CLIENT = 0,
1838 ENDPOINT_SERVER,
1839 ENDPOINT_BOTH
1840} ENDPOINT;
1841
1842
1843typedef struct {
1844 unsigned short ext_type;
1845 ENDPOINT role;
1846 /* The context which this extension applies to */
1847 unsigned int context;
1848 /*
1849 * Per-connection flags relating to this extension type: not used if
1850 * part of an SSL_CTX structure.
1851 */
1852 uint32_t ext_flags;
1853 SSL_custom_ext_add_cb_ex add_cb;
1854 SSL_custom_ext_free_cb_ex free_cb;
1855 void *add_arg;
1856 SSL_custom_ext_parse_cb_ex parse_cb;
1857 void *parse_arg;
1858} custom_ext_method;
1859
1860/* ext_flags values */
1861
1862/*
1863 * Indicates an extension has been received. Used to check for unsolicited or
1864 * duplicate extensions.
1865 */
1866# define SSL_EXT_FLAG_RECEIVED 0x1
1867/*
1868 * Indicates an extension has been sent: used to enable sending of
1869 * corresponding ServerHello extension.
1870 */
1871# define SSL_EXT_FLAG_SENT 0x2
1872
1873typedef struct {
1874 custom_ext_method *meths;
1875 size_t meths_count;
1876} custom_ext_methods;
1877
1878typedef struct cert_st {
1879 /* Current active set */
1880 /*
1881 * ALWAYS points to an element of the pkeys array
1882 * Probably it would make more sense to store
1883 * an index, not a pointer.
1884 */
1885 CERT_PKEY *key;
1886# ifndef OPENSSL_NO_DH
1887 EVP_PKEY *dh_tmp;
1888 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1889 int dh_tmp_auto;
1890# endif
1891 /* Flags related to certificates */
1892 uint32_t cert_flags;
1893 CERT_PKEY pkeys[SSL_PKEY_NUM];
1894 /* Custom certificate types sent in certificate request message. */
1895 uint8_t *ctype;
1896 size_t ctype_len;
1897 /*
1898 * supported signature algorithms. When set on a client this is sent in
1899 * the client hello as the supported signature algorithms extension. For
1900 * servers it represents the signature algorithms we are willing to use.
1901 */
1902 uint16_t *conf_sigalgs;
1903 /* Size of above array */
1904 size_t conf_sigalgslen;
1905 /*
1906 * Client authentication signature algorithms, if not set then uses
1907 * conf_sigalgs. On servers these will be the signature algorithms sent
1908 * to the client in a certificate request for TLS 1.2. On a client this
1909 * represents the signature algorithms we are willing to use for client
1910 * authentication.
1911 */
1912 uint16_t *client_sigalgs;
1913 /* Size of above array */
1914 size_t client_sigalgslen;
1915 /*
1916 * Certificate setup callback: if set is called whenever a certificate
1917 * may be required (client or server). the callback can then examine any
1918 * appropriate parameters and setup any certificates required. This
1919 * allows advanced applications to select certificates on the fly: for
1920 * example based on supported signature algorithms or curves.
1921 */
1922 int (*cert_cb) (SSL *ssl, void *arg);
1923 void *cert_cb_arg;
1924 /*
1925 * Optional X509_STORE for chain building or certificate validation If
1926 * NULL the parent SSL_CTX store is used instead.
1927 */
1928 X509_STORE *chain_store;
1929 X509_STORE *verify_store;
1930 /* Custom extensions */
1931 custom_ext_methods custext;
1932 /* Security callback */
1933 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1934 void *other, void *ex);
1935 /* Security level */
1936 int sec_level;
1937 void *sec_ex;
1938# ifndef OPENSSL_NO_PSK
1939 /* If not NULL psk identity hint to use for servers */
1940 char *psk_identity_hint;
1941# endif
1942 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
1943 CRYPTO_RWLOCK *lock;
1944} CERT;
1945
1946# define FP_ICC (int (*)(const void *,const void *))
1947
1948/*
1949 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1950 * of a mess of functions, but hell, think of it as an opaque structure :-)
1951 */
1952typedef struct ssl3_enc_method {
1953 int (*enc) (SSL *, SSL3_RECORD *, size_t, int);
1954 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
1955 int (*setup_key_block) (SSL *);
1956 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1957 size_t, size_t *);
1958 int (*change_cipher_state) (SSL *, int);
1959 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *);
1960 const char *client_finished_label;
1961 size_t client_finished_label_len;
1962 const char *server_finished_label;
1963 size_t server_finished_label_len;
1964 int (*alert_value) (int);
1965 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1966 const char *, size_t,
1967 const unsigned char *, size_t,
1968 int use_context);
1969 /* Various flags indicating protocol version requirements */
1970 uint32_t enc_flags;
1971 /* Set the handshake header */
1972 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type);
1973 /* Close construction of the handshake message */
1974 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype);
1975 /* Write out handshake message */
1976 int (*do_write) (SSL *s);
1977} SSL3_ENC_METHOD;
1978
1979# define ssl_set_handshake_header(s, pkt, htype) \
1980 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
1981# define ssl_close_construct_packet(s, pkt, htype) \
1982 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
1983# define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1984
1985/* Values for enc_flags */
1986
1987/* Uses explicit IV for CBC mode */
1988# define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1989/* Uses signature algorithms extension */
1990# define SSL_ENC_FLAG_SIGALGS 0x2
1991/* Uses SHA256 default PRF */
1992# define SSL_ENC_FLAG_SHA256_PRF 0x4
1993/* Is DTLS */
1994# define SSL_ENC_FLAG_DTLS 0x8
1995/*
1996 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1997 * apply to others in future.
1998 */
1999# define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2000
2001# ifndef OPENSSL_NO_COMP
2002/* Used for holding the relevant compression methods loaded into SSL_CTX */
2003typedef struct ssl3_comp_st {
2004 int comp_id; /* The identifier byte for this compression
2005 * type */
2006 char *name; /* Text name used for the compression type */
2007 COMP_METHOD *method; /* The method :-) */
2008} SSL3_COMP;
2009# endif
2010
2011typedef enum downgrade_en {
2012 DOWNGRADE_NONE,
2013 DOWNGRADE_TO_1_2,
2014 DOWNGRADE_TO_1_1
2015} DOWNGRADE;
2016
2017/*
2018 * Dummy status type for the status_type extension. Indicates no status type
2019 * set
2020 */
2021#define TLSEXT_STATUSTYPE_nothing -1
2022
2023/* Sigalgs values */
2024#define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2025#define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2026#define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2027#define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2028#define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2029#define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2030#define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2031#define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2032#define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2033#define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2034#define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2035#define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2036#define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2037#define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2038#define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2039#define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2040#define TLSEXT_SIGALG_dsa_sha256 0x0402
2041#define TLSEXT_SIGALG_dsa_sha384 0x0502
2042#define TLSEXT_SIGALG_dsa_sha512 0x0602
2043#define TLSEXT_SIGALG_dsa_sha224 0x0302
2044#define TLSEXT_SIGALG_dsa_sha1 0x0202
2045#define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2046#define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2047#define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2048
2049#define TLSEXT_SIGALG_ed25519 0x0807
2050#define TLSEXT_SIGALG_ed448 0x0808
2051
2052/* Known PSK key exchange modes */
2053#define TLSEXT_KEX_MODE_KE 0x00
2054#define TLSEXT_KEX_MODE_KE_DHE 0x01
2055
2056/*
2057 * Internal representations of key exchange modes
2058 */
2059#define TLSEXT_KEX_MODE_FLAG_NONE 0
2060#define TLSEXT_KEX_MODE_FLAG_KE 1
2061#define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2062
2063#define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \
2064 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2065
2066/* A dummy signature value not valid for TLSv1.2 signature algs */
2067#define TLSEXT_signature_rsa_pss 0x0101
2068
2069/* TLSv1.3 downgrade protection sentinel values */
2070extern const unsigned char tls11downgrade[8];
2071extern const unsigned char tls12downgrade[8];
2072
2073extern SSL3_ENC_METHOD ssl3_undef_enc_method;
2074
2075__owur const SSL_METHOD *ssl_bad_method(int ver);
2076__owur const SSL_METHOD *sslv3_method(void);
2077__owur const SSL_METHOD *sslv3_server_method(void);
2078__owur const SSL_METHOD *sslv3_client_method(void);
2079__owur const SSL_METHOD *tlsv1_method(void);
2080__owur const SSL_METHOD *tlsv1_server_method(void);
2081__owur const SSL_METHOD *tlsv1_client_method(void);
2082__owur const SSL_METHOD *tlsv1_1_method(void);
2083__owur const SSL_METHOD *tlsv1_1_server_method(void);
2084__owur const SSL_METHOD *tlsv1_1_client_method(void);
2085__owur const SSL_METHOD *tlsv1_2_method(void);
2086__owur const SSL_METHOD *tlsv1_2_server_method(void);
2087__owur const SSL_METHOD *tlsv1_2_client_method(void);
2088__owur const SSL_METHOD *tlsv1_3_method(void);
2089__owur const SSL_METHOD *tlsv1_3_server_method(void);
2090__owur const SSL_METHOD *tlsv1_3_client_method(void);
2091__owur const SSL_METHOD *dtlsv1_method(void);
2092__owur const SSL_METHOD *dtlsv1_server_method(void);
2093__owur const SSL_METHOD *dtlsv1_client_method(void);
2094__owur const SSL_METHOD *dtls_bad_ver_client_method(void);
2095__owur const SSL_METHOD *dtlsv1_2_method(void);
2096__owur const SSL_METHOD *dtlsv1_2_server_method(void);
2097__owur const SSL_METHOD *dtlsv1_2_client_method(void);
2098
2099extern const SSL3_ENC_METHOD TLSv1_enc_data;
2100extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
2101extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
2102extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
2103extern const SSL3_ENC_METHOD SSLv3_enc_data;
2104extern const SSL3_ENC_METHOD DTLSv1_enc_data;
2105extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
2106
2107/*
2108 * Flags for SSL methods
2109 */
2110# define SSL_METHOD_NO_FIPS (1U<<0)
2111# define SSL_METHOD_NO_SUITEB (1U<<1)
2112
2113# define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2114 s_connect, enc_data) \
2115const SSL_METHOD *func_name(void) \
2116 { \
2117 static const SSL_METHOD func_name##_data= { \
2118 version, \
2119 flags, \
2120 mask, \
2121 tls1_new, \
2122 tls1_clear, \
2123 tls1_free, \
2124 s_accept, \
2125 s_connect, \
2126 ssl3_read, \
2127 ssl3_peek, \
2128 ssl3_write, \
2129 ssl3_shutdown, \
2130 ssl3_renegotiate, \
2131 ssl3_renegotiate_check, \
2132 ssl3_read_bytes, \
2133 ssl3_write_bytes, \
2134 ssl3_dispatch_alert, \
2135 ssl3_ctrl, \
2136 ssl3_ctx_ctrl, \
2137 ssl3_get_cipher_by_char, \
2138 ssl3_put_cipher_by_char, \
2139 ssl3_pending, \
2140 ssl3_num_ciphers, \
2141 ssl3_get_cipher, \
2142 tls1_default_timeout, \
2143 &enc_data, \
2144 ssl_undefined_void_function, \
2145 ssl3_callback_ctrl, \
2146 ssl3_ctx_callback_ctrl, \
2147 }; \
2148 return &func_name##_data; \
2149 }
2150
2151# define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2152const SSL_METHOD *func_name(void) \
2153 { \
2154 static const SSL_METHOD func_name##_data= { \
2155 SSL3_VERSION, \
2156 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2157 SSL_OP_NO_SSLv3, \
2158 ssl3_new, \
2159 ssl3_clear, \
2160 ssl3_free, \
2161 s_accept, \
2162 s_connect, \
2163 ssl3_read, \
2164 ssl3_peek, \
2165 ssl3_write, \
2166 ssl3_shutdown, \
2167 ssl3_renegotiate, \
2168 ssl3_renegotiate_check, \
2169 ssl3_read_bytes, \
2170 ssl3_write_bytes, \
2171 ssl3_dispatch_alert, \
2172 ssl3_ctrl, \
2173 ssl3_ctx_ctrl, \
2174 ssl3_get_cipher_by_char, \
2175 ssl3_put_cipher_by_char, \
2176 ssl3_pending, \
2177 ssl3_num_ciphers, \
2178 ssl3_get_cipher, \
2179 ssl3_default_timeout, \
2180 &SSLv3_enc_data, \
2181 ssl_undefined_void_function, \
2182 ssl3_callback_ctrl, \
2183 ssl3_ctx_callback_ctrl, \
2184 }; \
2185 return &func_name##_data; \
2186 }
2187
2188# define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2189 s_connect, enc_data) \
2190const SSL_METHOD *func_name(void) \
2191 { \
2192 static const SSL_METHOD func_name##_data= { \
2193 version, \
2194 flags, \
2195 mask, \
2196 dtls1_new, \
2197 dtls1_clear, \
2198 dtls1_free, \
2199 s_accept, \
2200 s_connect, \
2201 ssl3_read, \
2202 ssl3_peek, \
2203 ssl3_write, \
2204 dtls1_shutdown, \
2205 ssl3_renegotiate, \
2206 ssl3_renegotiate_check, \
2207 dtls1_read_bytes, \
2208 dtls1_write_app_data_bytes, \
2209 dtls1_dispatch_alert, \
2210 dtls1_ctrl, \
2211 ssl3_ctx_ctrl, \
2212 ssl3_get_cipher_by_char, \
2213 ssl3_put_cipher_by_char, \
2214 ssl3_pending, \
2215 ssl3_num_ciphers, \
2216 ssl3_get_cipher, \
2217 dtls1_default_timeout, \
2218 &enc_data, \
2219 ssl_undefined_void_function, \
2220 ssl3_callback_ctrl, \
2221 ssl3_ctx_callback_ctrl, \
2222 }; \
2223 return &func_name##_data; \
2224 }
2225
2226struct openssl_ssl_test_functions {
2227 int (*p_ssl_init_wbio_buffer) (SSL *s);
2228 int (*p_ssl3_setup_buffers) (SSL *s);
2229};
2230
2231const char *ssl_protocol_to_string(int version);
2232
2233/* Returns true if certificate and private key for 'idx' are present */
2234static ossl_inline int ssl_has_cert(const SSL *s, int idx)
2235{
2236 if (idx < 0 || idx >= SSL_PKEY_NUM)
2237 return 0;
2238 return s->cert->pkeys[idx].x509 != NULL
2239 && s->cert->pkeys[idx].privatekey != NULL;
2240}
2241
2242static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups,
2243 size_t *pgroupslen)
2244{
2245 *pgroups = s->ext.peer_supportedgroups;
2246 *pgroupslen = s->ext.peer_supportedgroups_len;
2247}
2248
2249# ifndef OPENSSL_UNIT_TEST
2250
2251__owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2252__owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2253void ssl_clear_cipher_ctx(SSL *s);
2254int ssl_clear_bad_session(SSL *s);
2255__owur CERT *ssl_cert_new(void);
2256__owur CERT *ssl_cert_dup(CERT *cert);
2257void ssl_cert_clear_certs(CERT *c);
2258void ssl_cert_free(CERT *c);
2259__owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss);
2260__owur int ssl_get_new_session(SSL *s, int session);
2261__owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
2262 size_t sess_id_len);
2263__owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello);
2264__owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
2265__owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2266DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2267__owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2268 const SSL_CIPHER *const *bp);
2269__owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
2270 STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
2271 STACK_OF(SSL_CIPHER) **cipher_list,
2272 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
2273 const char *rule_str,
2274 CERT *c);
2275__owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format);
2276__owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
2277 STACK_OF(SSL_CIPHER) **skp,
2278 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2279 int fatal);
2280void ssl_update_cache(SSL *s, int mode);
2281__owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
2282 const EVP_MD **md, int *mac_pkey_type,
2283 size_t *mac_secret_size, SSL_COMP **comp,
2284 int use_etm);
2285__owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2286 size_t *int_overhead, size_t *blocksize,
2287 size_t *ext_overhead);
2288__owur int ssl_cert_is_disabled(size_t idx);
2289__owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl,
2290 const unsigned char *ptr,
2291 int all);
2292__owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2293__owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2294__owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2295__owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2296__owur int ssl_cert_select_current(CERT *c, X509 *x);
2297__owur int ssl_cert_set_current(CERT *c, long arg);
2298void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2299
2300__owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
2301__owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
2302__owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2303 int ref);
2304
2305__owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
2306__owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2307 void *other);
2308int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp);
2309
2310__owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx);
2311__owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2312 size_t *pidx);
2313__owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
2314
2315int ssl_undefined_function(SSL *s);
2316__owur int ssl_undefined_void_function(void);
2317__owur int ssl_undefined_const_function(const SSL *s);
2318__owur int ssl_get_server_cert_serverinfo(SSL *s,
2319 const unsigned char **serverinfo,
2320 size_t *serverinfo_length);
2321void ssl_set_masks(SSL *s);
2322__owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
2323__owur int ssl_x509err2alert(int type);
2324void ssl_sort_cipher_list(void);
2325int ssl_load_ciphers(void);
2326__owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field,
2327 size_t len, DOWNGRADE dgrd);
2328__owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
2329 int free_pms);
2330__owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm);
2331__owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2332 int genmaster);
2333__owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2334__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl);
2335__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl);
2336
2337__owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2338__owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2339__owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2340__owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2341 size_t *len);
2342int ssl3_init_finished_mac(SSL *s);
2343__owur int ssl3_setup_key_block(SSL *s);
2344__owur int ssl3_change_cipher_state(SSL *s, int which);
2345void ssl3_cleanup_key_block(SSL *s);
2346__owur int ssl3_do_write(SSL *s, int type);
2347int ssl3_send_alert(SSL *s, int level, int desc);
2348__owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
2349 unsigned char *p, size_t len,
2350 size_t *secret_size);
2351__owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt);
2352__owur int ssl3_num_ciphers(void);
2353__owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2354int ssl3_renegotiate(SSL *ssl);
2355int ssl3_renegotiate_check(SSL *ssl, int initok);
2356__owur int ssl3_dispatch_alert(SSL *s);
2357__owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen,
2358 unsigned char *p);
2359__owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len);
2360void ssl3_free_digest_list(SSL *s);
2361__owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt,
2362 CERT_PKEY *cpk);
2363__owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
2364 STACK_OF(SSL_CIPHER) *clnt,
2365 STACK_OF(SSL_CIPHER) *srvr);
2366__owur int ssl3_digest_cached_records(SSL *s, int keep);
2367__owur int ssl3_new(SSL *s);
2368void ssl3_free(SSL *s);
2369__owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2370__owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2371__owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2372__owur int ssl3_shutdown(SSL *s);
2373int ssl3_clear(SSL *s);
2374__owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2375__owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2376__owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2377__owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2378
2379__owur int ssl3_do_change_cipher_spec(SSL *ssl);
2380__owur long ssl3_default_timeout(void);
2381
2382__owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2383__owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2384__owur int tls_setup_handshake(SSL *s);
2385__owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2386__owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2387__owur int ssl3_handshake_write(SSL *s);
2388
2389__owur int ssl_allow_compression(SSL *s);
2390
2391__owur int ssl_version_supported(const SSL *s, int version,
2392 const SSL_METHOD **meth);
2393
2394__owur int ssl_set_client_hello_version(SSL *s);
2395__owur int ssl_check_version_downgrade(SSL *s);
2396__owur int ssl_set_version_bound(int method_version, int version, int *bound);
2397__owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello,
2398 DOWNGRADE *dgrd);
2399__owur int ssl_choose_client_version(SSL *s, int version,
2400 RAW_EXTENSION *extensions);
2401__owur int ssl_get_min_max_version(const SSL *s, int *min_version,
2402 int *max_version, int *real_max);
2403
2404__owur long tls1_default_timeout(void);
2405__owur int dtls1_do_write(SSL *s, int type);
2406void dtls1_set_message_header(SSL *s,
2407 unsigned char mt,
2408 size_t len,
2409 size_t frag_off, size_t frag_len);
2410
2411int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2412 size_t *written);
2413
2414__owur int dtls1_read_failed(SSL *s, int code);
2415__owur int dtls1_buffer_message(SSL *s, int ccs);
2416__owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
2417__owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2418int dtls1_retransmit_buffered_messages(SSL *s);
2419void dtls1_clear_received_buffer(SSL *s);
2420void dtls1_clear_sent_buffer(SSL *s);
2421void dtls1_get_message_header(unsigned char *data,
2422 struct hm_header_st *msg_hdr);
2423__owur long dtls1_default_timeout(void);
2424__owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
2425__owur int dtls1_check_timeout_num(SSL *s);
2426__owur int dtls1_handle_timeout(SSL *s);
2427void dtls1_start_timer(SSL *s);
2428void dtls1_stop_timer(SSL *s);
2429__owur int dtls1_is_timer_expired(SSL *s);
2430__owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2431 size_t cookie_len);
2432__owur size_t dtls1_min_mtu(SSL *s);
2433void dtls1_hm_fragment_free(hm_fragment *frag);
2434__owur int dtls1_query_mtu(SSL *s);
2435
2436__owur int tls1_new(SSL *s);
2437void tls1_free(SSL *s);
2438int tls1_clear(SSL *s);
2439
2440__owur int dtls1_new(SSL *s);
2441void dtls1_free(SSL *s);
2442int dtls1_clear(SSL *s);
2443long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2444__owur int dtls1_shutdown(SSL *s);
2445
2446__owur int dtls1_dispatch_alert(SSL *s);
2447
2448__owur int ssl_init_wbio_buffer(SSL *s);
2449int ssl_free_wbio_buffer(SSL *s);
2450
2451__owur int tls1_change_cipher_state(SSL *s, int which);
2452__owur int tls1_setup_key_block(SSL *s);
2453__owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
2454 unsigned char *p);
2455__owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
2456 unsigned char *p, size_t len,
2457 size_t *secret_size);
2458__owur int tls13_setup_key_block(SSL *s);
2459__owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen,
2460 unsigned char *p);
2461__owur int tls13_change_cipher_state(SSL *s, int which);
2462__owur int tls13_update_key(SSL *s, int send);
2463__owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md,
2464 const unsigned char *secret,
2465 const unsigned char *label, size_t labellen,
2466 const unsigned char *data, size_t datalen,
2467 unsigned char *out, size_t outlen, int fatal);
2468__owur int tls13_derive_key(SSL *s, const EVP_MD *md,
2469 const unsigned char *secret, unsigned char *key,
2470 size_t keylen);
2471__owur int tls13_derive_iv(SSL *s, const EVP_MD *md,
2472 const unsigned char *secret, unsigned char *iv,
2473 size_t ivlen);
2474__owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md,
2475 const unsigned char *secret,
2476 unsigned char *fin, size_t finlen);
2477int tls13_generate_secret(SSL *s, const EVP_MD *md,
2478 const unsigned char *prevsecret,
2479 const unsigned char *insecret,
2480 size_t insecretlen,
2481 unsigned char *outsecret);
2482__owur int tls13_generate_handshake_secret(SSL *s,
2483 const unsigned char *insecret,
2484 size_t insecretlen);
2485__owur int tls13_generate_master_secret(SSL *s, unsigned char *out,
2486 unsigned char *prev, size_t prevlen,
2487 size_t *secret_size);
2488__owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2489 const char *label, size_t llen,
2490 const unsigned char *p, size_t plen,
2491 int use_context);
2492__owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2493 const char *label, size_t llen,
2494 const unsigned char *context,
2495 size_t contextlen, int use_context);
2496__owur int tls13_export_keying_material_early(SSL *s, unsigned char *out,
2497 size_t olen, const char *label,
2498 size_t llen,
2499 const unsigned char *context,
2500 size_t contextlen);
2501__owur int tls1_alert_code(int code);
2502__owur int tls13_alert_code(int code);
2503__owur int ssl3_alert_code(int code);
2504
2505# ifndef OPENSSL_NO_EC
2506__owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2507# endif
2508
2509SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2510
2511# ifndef OPENSSL_NO_EC
2512
2513__owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id);
2514__owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves);
2515__owur uint16_t tls1_shared_group(SSL *s, int nmatch);
2516__owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2517 int *curves, size_t ncurves);
2518__owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen,
2519 const char *str);
2520void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
2521 size_t *num_formats);
2522__owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2523__owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id);
2524__owur EVP_PKEY *ssl_generate_param_group(uint16_t id);
2525# endif /* OPENSSL_NO_EC */
2526
2527__owur int tls_curve_allowed(SSL *s, uint16_t curve, int op);
2528void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups,
2529 size_t *pgroupslen);
2530
2531__owur int tls1_set_server_sigalgs(SSL *s);
2532
2533__owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
2534 SSL_SESSION **ret);
2535__owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick,
2536 size_t eticklen,
2537 const unsigned char *sess_id,
2538 size_t sesslen, SSL_SESSION **psess);
2539
2540__owur int tls_use_ticket(SSL *s);
2541
2542void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2543
2544__owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2545__owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2546 int client);
2547__owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2548 int client);
2549int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2550 int idx);
2551void tls1_set_cert_validity(SSL *s);
2552
2553# ifndef OPENSSL_NO_CT
2554__owur int ssl_validate_ct(SSL *s);
2555# endif
2556
2557# ifndef OPENSSL_NO_DH
2558__owur DH *ssl_get_auto_dh(SSL *s);
2559# endif
2560
2561__owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2562__owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex,
2563 int vfy);
2564
2565int tls_choose_sigalg(SSL *s, int fatalerrs);
2566
2567__owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2568void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2569__owur long ssl_get_algorithm2(SSL *s);
2570__owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
2571 const uint16_t *psig, size_t psiglen);
2572__owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2573__owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert);
2574__owur int tls1_process_sigalgs(SSL *s);
2575__owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey);
2576__owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd);
2577__owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs);
2578# ifndef OPENSSL_NO_EC
2579__owur int tls_check_sigalg_curve(const SSL *s, int curve);
2580# endif
2581__owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey);
2582__owur int ssl_set_client_disabled(SSL *s);
2583__owur int ssl_cipher_disabled(const SSL *s, const SSL_CIPHER *c, int op, int echde);
2584
2585__owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
2586 size_t *hashlen);
2587__owur const EVP_MD *ssl_md(int idx);
2588__owur const EVP_MD *ssl_handshake_md(SSL *s);
2589__owur const EVP_MD *ssl_prf_md(SSL *s);
2590
2591/*
2592 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2593 * with |ssl|, if logging is enabled. It returns one on success and zero on
2594 * failure. The entry is identified by the first 8 bytes of
2595 * |encrypted_premaster|.
2596 */
2597__owur int ssl_log_rsa_client_key_exchange(SSL *ssl,
2598 const uint8_t *encrypted_premaster,
2599 size_t encrypted_premaster_len,
2600 const uint8_t *premaster,
2601 size_t premaster_len);
2602
2603/*
2604 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2605 * logging is available. It returns one on success and zero on failure. It tags
2606 * the entry with |label|.
2607 */
2608__owur int ssl_log_secret(SSL *ssl, const char *label,
2609 const uint8_t *secret, size_t secret_len);
2610
2611#define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2612#define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2613#define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2614#define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2615#define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2616#define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2617#define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2618#define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2619
2620/* s3_cbc.c */
2621__owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2622__owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2623 unsigned char *md_out,
2624 size_t *md_out_size,
2625 const unsigned char header[13],
2626 const unsigned char *data,
2627 size_t data_plus_mac_size,
2628 size_t data_plus_mac_plus_padding_size,
2629 const unsigned char *mac_secret,
2630 size_t mac_secret_length, char is_sslv3);
2631
2632__owur int srp_generate_server_master_secret(SSL *s);
2633__owur int srp_generate_client_master_secret(SSL *s);
2634__owur int srp_verify_server_param(SSL *s);
2635
2636/* statem/statem_srvr.c */
2637
2638__owur int send_certificate_request(SSL *s);
2639
2640/* statem/extensions_cust.c */
2641
2642custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2643 ENDPOINT role, unsigned int ext_type,
2644 size_t *idx);
2645
2646void custom_ext_init(custom_ext_methods *meths);
2647
2648__owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type,
2649 const unsigned char *ext_data, size_t ext_size,
2650 X509 *x, size_t chainidx);
2651__owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x,
2652 size_t chainidx, int maxversion);
2653
2654__owur int custom_exts_copy(custom_ext_methods *dst,
2655 const custom_ext_methods *src);
2656__owur int custom_exts_copy_flags(custom_ext_methods *dst,
2657 const custom_ext_methods *src);
2658void custom_exts_free(custom_ext_methods *exts);
2659
2660void ssl_comp_free_compression_methods_int(void);
2661
2662/* ssl_mcnf.c */
2663void ssl_ctx_system_config(SSL_CTX *ctx);
2664
2665# else /* OPENSSL_UNIT_TEST */
2666
2667# define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2668# define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2669
2670# endif
2671#endif
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