File Coverage

/usr/include/openssl/ssl.h

Criterion	Covered	Total	%
statement	1	1	100.0
branch			n/a
condition			n/a
subroutine			n/a
pod			n/a
total	1	1	100.0

line	stmt	code
1		/*
2		* WARNING: do not edit!
3		* Generated by Makefile from ../include/openssl/ssl.h.in
4		*
5		* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
6		* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
7		* Copyright 2005 Nokia. All rights reserved.
8		*
9		* Licensed under the Apache License 2.0 (the "License"). You may not use
10		* this file except in compliance with the License. You can obtain a copy
11		* in the file LICENSE in the source distribution or at
12		* https://www.openssl.org/source/license.html
13		*/
14
15
16
17		#ifndef OPENSSL_SSL_H
18		# define OPENSSL_SSL_H
19		# pragma once
20
21		# include
22		# ifndef OPENSSL_NO_DEPRECATED_3_0
23		# define HEADER_SSL_H
24		# endif
25
26		# include
27		# include
28		# include
29		# include
30		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
31		# include
32		# include
33		# include
34		# endif
35		# include
36		# include
37		# include
38		# include
39
40		# include
41		# include
42		# include
43		# include
44		# include
45
46		#ifdef __cplusplus
47		extern "C" {
48		#endif
49
50		/* OpenSSL version number for ASN.1 encoding of the session information */
51		/*-
52		* Version 0 - initial version
53		* Version 1 - added the optional peer certificate
54		*/
55		# define SSL_SESSION_ASN1_VERSION 0x0001
56
57		# define SSL_MAX_SSL_SESSION_ID_LENGTH 32
58		# define SSL_MAX_SID_CTX_LENGTH 32
59
60		# define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES (512/8)
61		# define SSL_MAX_KEY_ARG_LENGTH 8
62		/* SSL_MAX_MASTER_KEY_LENGTH is defined in prov_ssl.h */
63
64		/* The maximum number of encrypt/decrypt pipelines we can support */
65		# define SSL_MAX_PIPELINES 32
66
67		/* text strings for the ciphers */
68
69		/* These are used to specify which ciphers to use and not to use */
70
71		# define SSL_TXT_LOW "LOW"
72		# define SSL_TXT_MEDIUM "MEDIUM"
73		# define SSL_TXT_HIGH "HIGH"
74		# define SSL_TXT_FIPS "FIPS"
75
76		# define SSL_TXT_aNULL "aNULL"
77		# define SSL_TXT_eNULL "eNULL"
78		# define SSL_TXT_NULL "NULL"
79
80		# define SSL_TXT_kRSA "kRSA"
81		# define SSL_TXT_kDHr "kDHr"/* this cipher class has been removed */
82		# define SSL_TXT_kDHd "kDHd"/* this cipher class has been removed */
83		# define SSL_TXT_kDH "kDH"/* this cipher class has been removed */
84		# define SSL_TXT_kEDH "kEDH"/* alias for kDHE */
85		# define SSL_TXT_kDHE "kDHE"
86		# define SSL_TXT_kECDHr "kECDHr"/* this cipher class has been removed */
87		# define SSL_TXT_kECDHe "kECDHe"/* this cipher class has been removed */
88		# define SSL_TXT_kECDH "kECDH"/* this cipher class has been removed */
89		# define SSL_TXT_kEECDH "kEECDH"/* alias for kECDHE */
90		# define SSL_TXT_kECDHE "kECDHE"
91		# define SSL_TXT_kPSK "kPSK"
92		# define SSL_TXT_kRSAPSK "kRSAPSK"
93		# define SSL_TXT_kECDHEPSK "kECDHEPSK"
94		# define SSL_TXT_kDHEPSK "kDHEPSK"
95		# define SSL_TXT_kGOST "kGOST"
96		# define SSL_TXT_kGOST18 "kGOST18"
97		# define SSL_TXT_kSRP "kSRP"
98
99		# define SSL_TXT_aRSA "aRSA"
100		# define SSL_TXT_aDSS "aDSS"
101		# define SSL_TXT_aDH "aDH"/* this cipher class has been removed */
102		# define SSL_TXT_aECDH "aECDH"/* this cipher class has been removed */
103		# define SSL_TXT_aECDSA "aECDSA"
104		# define SSL_TXT_aPSK "aPSK"
105		# define SSL_TXT_aGOST94 "aGOST94"
106		# define SSL_TXT_aGOST01 "aGOST01"
107		# define SSL_TXT_aGOST12 "aGOST12"
108		# define SSL_TXT_aGOST "aGOST"
109		# define SSL_TXT_aSRP "aSRP"
110
111		# define SSL_TXT_DSS "DSS"
112		# define SSL_TXT_DH "DH"
113		# define SSL_TXT_DHE "DHE"/* same as "kDHE:-ADH" */
114		# define SSL_TXT_EDH "EDH"/* alias for DHE */
115		# define SSL_TXT_ADH "ADH"
116		# define SSL_TXT_RSA "RSA"
117		# define SSL_TXT_ECDH "ECDH"
118		# define SSL_TXT_EECDH "EECDH"/* alias for ECDHE" */
119		# define SSL_TXT_ECDHE "ECDHE"/* same as "kECDHE:-AECDH" */
120		# define SSL_TXT_AECDH "AECDH"
121		# define SSL_TXT_ECDSA "ECDSA"
122		# define SSL_TXT_PSK "PSK"
123		# define SSL_TXT_SRP "SRP"
124
125		# define SSL_TXT_DES "DES"
126		# define SSL_TXT_3DES "3DES"
127		# define SSL_TXT_RC4 "RC4"
128		# define SSL_TXT_RC2 "RC2"
129		# define SSL_TXT_IDEA "IDEA"
130		# define SSL_TXT_SEED "SEED"
131		# define SSL_TXT_AES128 "AES128"
132		# define SSL_TXT_AES256 "AES256"
133		# define SSL_TXT_AES "AES"
134		# define SSL_TXT_AES_GCM "AESGCM"
135		# define SSL_TXT_AES_CCM "AESCCM"
136		# define SSL_TXT_AES_CCM_8 "AESCCM8"
137		# define SSL_TXT_CAMELLIA128 "CAMELLIA128"
138		# define SSL_TXT_CAMELLIA256 "CAMELLIA256"
139		# define SSL_TXT_CAMELLIA "CAMELLIA"
140		# define SSL_TXT_CHACHA20 "CHACHA20"
141		# define SSL_TXT_GOST "GOST89"
142		# define SSL_TXT_ARIA "ARIA"
143		# define SSL_TXT_ARIA_GCM "ARIAGCM"
144		# define SSL_TXT_ARIA128 "ARIA128"
145		# define SSL_TXT_ARIA256 "ARIA256"
146		# define SSL_TXT_GOST2012_GOST8912_GOST8912 "GOST2012-GOST8912-GOST8912"
147		# define SSL_TXT_CBC "CBC"
148
149		# define SSL_TXT_MD5 "MD5"
150		# define SSL_TXT_SHA1 "SHA1"
151		# define SSL_TXT_SHA "SHA"/* same as "SHA1" */
152		# define SSL_TXT_GOST94 "GOST94"
153		# define SSL_TXT_GOST89MAC "GOST89MAC"
154		# define SSL_TXT_GOST12 "GOST12"
155		# define SSL_TXT_GOST89MAC12 "GOST89MAC12"
156		# define SSL_TXT_SHA256 "SHA256"
157		# define SSL_TXT_SHA384 "SHA384"
158
159		# define SSL_TXT_SSLV3 "SSLv3"
160		# define SSL_TXT_TLSV1 "TLSv1"
161		# define SSL_TXT_TLSV1_1 "TLSv1.1"
162		# define SSL_TXT_TLSV1_2 "TLSv1.2"
163
164		# define SSL_TXT_ALL "ALL"
165
166		/*-
167		* COMPLEMENTOF* definitions. These identifiers are used to (de-select)
168		* ciphers normally not being used.
169		* Example: "RC4" will activate all ciphers using RC4 including ciphers
170		* without authentication, which would normally disabled by DEFAULT (due
171		* the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
172		* will make sure that it is also disabled in the specific selection.
173		* COMPLEMENTOF* identifiers are portable between version, as adjustments
174		* to the default cipher setup will also be included here.
175		*
176		* COMPLEMENTOFDEFAULT does not experience the same special treatment that
177		* DEFAULT gets, as only selection is being done and no sorting as needed
178		* for DEFAULT.
179		*/
180		# define SSL_TXT_CMPALL "COMPLEMENTOFALL"
181		# define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
182
183		/*
184		* The following cipher list is used by default. It also is substituted when
185		* an application-defined cipher list string starts with 'DEFAULT'.
186		* This applies to ciphersuites for TLSv1.2 and below.
187		* DEPRECATED IN 3.0.0, in favor of OSSL_default_cipher_list()
188		* Update both macro and function simultaneously
189		*/
190		# ifndef OPENSSL_NO_DEPRECATED_3_0
191		# define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
192		/*
193		* This is the default set of TLSv1.3 ciphersuites
194		* DEPRECATED IN 3.0.0, in favor of OSSL_default_ciphersuites()
195		* Update both macro and function simultaneously
196		*/
197		# define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
198		"TLS_CHACHA20_POLY1305_SHA256:" \
199		"TLS_AES_128_GCM_SHA256"
200		# endif
201		/*
202		* As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
203		* starts with a reasonable order, and all we have to do for DEFAULT is
204		* throwing out anonymous and unencrypted ciphersuites! (The latter are not
205		* actually enabled by ALL, but "ALL:RSA" would enable some of them.)
206		*/
207
208		/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
209		# define SSL_SENT_SHUTDOWN 1
210		# define SSL_RECEIVED_SHUTDOWN 2
211
212		#ifdef __cplusplus
213		}
214		#endif
215
216		#ifdef __cplusplus
217		extern "C" {
218		#endif
219
220		# define SSL_FILETYPE_ASN1 X509_FILETYPE_ASN1
221		# define SSL_FILETYPE_PEM X509_FILETYPE_PEM
222
223		/*
224		* This is needed to stop compilers complaining about the 'struct ssl_st *'
225		* function parameters used to prototype callbacks in SSL_CTX.
226		*/
227		typedef struct ssl_st *ssl_crock_st;
228		typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
229		typedef struct ssl_method_st SSL_METHOD;
230		typedef struct ssl_cipher_st SSL_CIPHER;
231		typedef struct ssl_session_st SSL_SESSION;
232		typedef struct tls_sigalgs_st TLS_SIGALGS;
233		typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
234		typedef struct ssl_comp_st SSL_COMP;
235
236		STACK_OF(SSL_CIPHER);
237		STACK_OF(SSL_COMP);
238
239		/* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
240		typedef struct srtp_protection_profile_st {
241		const char *name;
242		unsigned long id;
243		} SRTP_PROTECTION_PROFILE;
244		SKM_DEFINE_STACK_OF_INTERNAL(SRTP_PROTECTION_PROFILE, SRTP_PROTECTION_PROFILE, SRTP_PROTECTION_PROFILE)
245		#define sk_SRTP_PROTECTION_PROFILE_num(sk) OPENSSL_sk_num(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk))
246		#define sk_SRTP_PROTECTION_PROFILE_value(sk, idx) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_value(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk), (idx)))
247		#define sk_SRTP_PROTECTION_PROFILE_new(cmp) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new(ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp)))
248		#define sk_SRTP_PROTECTION_PROFILE_new_null() ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new_null())
249		#define sk_SRTP_PROTECTION_PROFILE_new_reserve(cmp, n) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new_reserve(ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp), (n)))
250		#define sk_SRTP_PROTECTION_PROFILE_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (n))
251		#define sk_SRTP_PROTECTION_PROFILE_free(sk) OPENSSL_sk_free(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
252		#define sk_SRTP_PROTECTION_PROFILE_zero(sk) OPENSSL_sk_zero(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
253		#define sk_SRTP_PROTECTION_PROFILE_delete(sk, i) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_delete(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (i)))
254		#define sk_SRTP_PROTECTION_PROFILE_delete_ptr(sk, ptr) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_delete_ptr(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr)))
255		#define sk_SRTP_PROTECTION_PROFILE_push(sk, ptr) OPENSSL_sk_push(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
256		#define sk_SRTP_PROTECTION_PROFILE_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
257		#define sk_SRTP_PROTECTION_PROFILE_pop(sk) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_pop(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk)))
258		#define sk_SRTP_PROTECTION_PROFILE_shift(sk) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_shift(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk)))
259		#define sk_SRTP_PROTECTION_PROFILE_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk),ossl_check_SRTP_PROTECTION_PROFILE_freefunc_type(freefunc))
260		#define sk_SRTP_PROTECTION_PROFILE_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr), (idx))
261		#define sk_SRTP_PROTECTION_PROFILE_set(sk, idx, ptr) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_set(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (idx), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr)))
262		#define sk_SRTP_PROTECTION_PROFILE_find(sk, ptr) OPENSSL_sk_find(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
263		#define sk_SRTP_PROTECTION_PROFILE_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
264		#define sk_SRTP_PROTECTION_PROFILE_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr), pnum)
265		#define sk_SRTP_PROTECTION_PROFILE_sort(sk) OPENSSL_sk_sort(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
266		#define sk_SRTP_PROTECTION_PROFILE_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk))
267		#define sk_SRTP_PROTECTION_PROFILE_dup(sk) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_dup(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk)))
268		#define sk_SRTP_PROTECTION_PROFILE_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_deep_copy(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_copyfunc_type(copyfunc), ossl_check_SRTP_PROTECTION_PROFILE_freefunc_type(freefunc)))
269		#define sk_SRTP_PROTECTION_PROFILE_set_cmp_func(sk, cmp) ((sk_SRTP_PROTECTION_PROFILE_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp)))
270
271
272
273		typedef int (tls_session_ticket_ext_cb_fn)(SSL s, const unsigned char *data,
274		int len, void *arg);
275		typedef int (tls_session_secret_cb_fn)(SSL s, void secret, int secret_len,
276		STACK_OF(SSL_CIPHER) *peer_ciphers,
277		const SSL_CIPHER *cipher, void arg);
278
279		/* Extension context codes */
280		/* This extension is only allowed in TLS */
281		#define SSL_EXT_TLS_ONLY 0x0001
282		/* This extension is only allowed in DTLS */
283		#define SSL_EXT_DTLS_ONLY 0x0002
284		/* Some extensions may be allowed in DTLS but we don't implement them for it */
285		#define SSL_EXT_TLS_IMPLEMENTATION_ONLY 0x0004
286		/* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
287		#define SSL_EXT_SSL3_ALLOWED 0x0008
288		/* Extension is only defined for TLS1.2 and below */
289		#define SSL_EXT_TLS1_2_AND_BELOW_ONLY 0x0010
290		/* Extension is only defined for TLS1.3 and above */
291		#define SSL_EXT_TLS1_3_ONLY 0x0020
292		/* Ignore this extension during parsing if we are resuming */
293		#define SSL_EXT_IGNORE_ON_RESUMPTION 0x0040
294		#define SSL_EXT_CLIENT_HELLO 0x0080
295		/* Really means TLS1.2 or below */
296		#define SSL_EXT_TLS1_2_SERVER_HELLO 0x0100
297		#define SSL_EXT_TLS1_3_SERVER_HELLO 0x0200
298		#define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS 0x0400
299		#define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST 0x0800
300		#define SSL_EXT_TLS1_3_CERTIFICATE 0x1000
301		#define SSL_EXT_TLS1_3_NEW_SESSION_TICKET 0x2000
302		#define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST 0x4000
303
304		/* Typedefs for handling custom extensions */
305
306		typedef int (custom_ext_add_cb)(SSL s, unsigned int ext_type,
307		const unsigned char *out, size_t outlen,
308		int al, void add_arg);
309
310		typedef void (custom_ext_free_cb)(SSL s, unsigned int ext_type,
311		const unsigned char out, void add_arg);
312
313		typedef int (custom_ext_parse_cb)(SSL s, unsigned int ext_type,
314		const unsigned char *in, size_t inlen,
315		int al, void parse_arg);
316
317
318		typedef int (SSL_custom_ext_add_cb_ex)(SSL s, unsigned int ext_type,
319		unsigned int context,
320		const unsigned char **out,
321		size_t outlen, X509 x,
322		size_t chainidx,
323		int al, void add_arg);
324
325		typedef void (SSL_custom_ext_free_cb_ex)(SSL s, unsigned int ext_type,
326		unsigned int context,
327		const unsigned char *out,
328		void *add_arg);
329
330		typedef int (SSL_custom_ext_parse_cb_ex)(SSL s, unsigned int ext_type,
331		unsigned int context,
332		const unsigned char *in,
333		size_t inlen, X509 *x,
334		size_t chainidx,
335		int al, void parse_arg);
336
337		/* Typedef for verification callback */
338		typedef int (SSL_verify_cb)(int preverify_ok, X509_STORE_CTX x509_ctx);
339
340		/* Typedef for SSL async callback */
341		typedef int (SSL_async_callback_fn)(SSL s, void *arg);
342
343		#define SSL_OP_BIT(n) ((uint64_t)1 << (uint64_t)n)
344
345		/*
346		* SSL/TLS connection options.
347		*/
348		/* Disable Extended master secret */
349		# define SSL_OP_NO_EXTENDED_MASTER_SECRET SSL_OP_BIT(0)
350		/* Cleanse plaintext copies of data delivered to the application */
351		# define SSL_OP_CLEANSE_PLAINTEXT SSL_OP_BIT(1)
352		/* Allow initial connection to servers that don't support RI */
353		# define SSL_OP_LEGACY_SERVER_CONNECT SSL_OP_BIT(2)
354		/* Enable support for Kernel TLS */
355		# define SSL_OP_ENABLE_KTLS SSL_OP_BIT(3)
356		# define SSL_OP_TLSEXT_PADDING SSL_OP_BIT(4)
357		# define SSL_OP_SAFARI_ECDHE_ECDSA_BUG SSL_OP_BIT(6)
358		# define SSL_OP_IGNORE_UNEXPECTED_EOF SSL_OP_BIT(7)
359		# define SSL_OP_ALLOW_CLIENT_RENEGOTIATION SSL_OP_BIT(8)
360		# define SSL_OP_DISABLE_TLSEXT_CA_NAMES SSL_OP_BIT(9)
361		/* In TLSv1.3 allow a non-(ec)dhe based kex_mode */
362		# define SSL_OP_ALLOW_NO_DHE_KEX SSL_OP_BIT(10)
363		/*
364		* Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
365		* in OpenSSL 0.9.6d. Usually (depending on the application protocol)
366		* the workaround is not needed. Unfortunately some broken SSL/TLS
367		* implementations cannot handle it at all, which is why we include it
368		* in SSL_OP_ALL. Added in 0.9.6e
369		*/
370		# define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS SSL_OP_BIT(11)
371		/* DTLS options */
372		# define SSL_OP_NO_QUERY_MTU SSL_OP_BIT(12)
373		/* Turn on Cookie Exchange (on relevant for servers) */
374		# define SSL_OP_COOKIE_EXCHANGE SSL_OP_BIT(13)
375		/* Don't use RFC4507 ticket extension */
376		# define SSL_OP_NO_TICKET SSL_OP_BIT(14)
377		# ifndef OPENSSL_NO_DTLS1_METHOD
378		/*
379		* Use Cisco's version identifier of DTLS_BAD_VER
380		* (only with deprecated DTLSv1_client_method())
381		*/
382		# define SSL_OP_CISCO_ANYCONNECT SSL_OP_BIT(15)
383		# endif
384		/* As server, disallow session resumption on renegotiation */
385		# define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION SSL_OP_BIT(16)
386		/* Don't use compression even if supported */
387		# define SSL_OP_NO_COMPRESSION SSL_OP_BIT(17)
388		/* Permit unsafe legacy renegotiation */
389		# define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION SSL_OP_BIT(18)
390		/* Disable encrypt-then-mac */
391		# define SSL_OP_NO_ENCRYPT_THEN_MAC SSL_OP_BIT(19)
392		/*
393		* Enable TLSv1.3 Compatibility mode. This is on by default. A future
394		* version of OpenSSL may have this disabled by default.
395		*/
396		# define SSL_OP_ENABLE_MIDDLEBOX_COMPAT SSL_OP_BIT(20)
397		/*
398		* Prioritize Chacha20Poly1305 when client does.
399		* Modifies SSL_OP_CIPHER_SERVER_PREFERENCE
400		*/
401		# define SSL_OP_PRIORITIZE_CHACHA SSL_OP_BIT(21)
402		/*
403		* Set on servers to choose the cipher according to server's preferences.
404		*/
405		# define SSL_OP_CIPHER_SERVER_PREFERENCE SSL_OP_BIT(22)
406		/*
407		* If set, a server will allow a client to issue a SSLv3.0 version
408		* number as latest version supported in the premaster secret, even when
409		* TLSv1.0 (version 3.1) was announced in the client hello. Normally
410		* this is forbidden to prevent version rollback attacks.
411		*/
412		# define SSL_OP_TLS_ROLLBACK_BUG SSL_OP_BIT(23)
413		/*
414		* Switches off automatic TLSv1.3 anti-replay protection for early data.
415		* This is a server-side option only (no effect on the client).
416		*/
417		# define SSL_OP_NO_ANTI_REPLAY SSL_OP_BIT(24)
418		# define SSL_OP_NO_SSLv3 SSL_OP_BIT(25)
419		# define SSL_OP_NO_TLSv1 SSL_OP_BIT(26)
420		# define SSL_OP_NO_TLSv1_2 SSL_OP_BIT(27)
421		# define SSL_OP_NO_TLSv1_1 SSL_OP_BIT(28)
422		# define SSL_OP_NO_TLSv1_3 SSL_OP_BIT(29)
423		# define SSL_OP_NO_DTLSv1 SSL_OP_BIT(26)
424		# define SSL_OP_NO_DTLSv1_2 SSL_OP_BIT(27)
425		/* Disallow all renegotiation */
426		# define SSL_OP_NO_RENEGOTIATION SSL_OP_BIT(30)
427		/*
428		* Make server add server-hello extension from early version of
429		* cryptopro draft, when GOST ciphersuite is negotiated. Required for
430		* interoperability with CryptoPro CSP 3.x
431		*/
432		# define SSL_OP_CRYPTOPRO_TLSEXT_BUG SSL_OP_BIT(31)
433
434		/*
435		* Option "collections."
436		*/
437		# define SSL_OP_NO_SSL_MASK \
438		( SSL_OP_NO_SSLv3 \| SSL_OP_NO_TLSv1 \| SSL_OP_NO_TLSv1_1 \
439		\| SSL_OP_NO_TLSv1_2 \| SSL_OP_NO_TLSv1_3 )
440		# define SSL_OP_NO_DTLS_MASK \
441		( SSL_OP_NO_DTLSv1 \| SSL_OP_NO_DTLSv1_2 )
442
443		/* Various bug workarounds that should be rather harmless. */
444		# define SSL_OP_ALL \
445		( SSL_OP_CRYPTOPRO_TLSEXT_BUG \| SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS \
446		\| SSL_OP_TLSEXT_PADDING \| SSL_OP_SAFARI_ECDHE_ECDSA_BUG )
447
448		/*
449		* OBSOLETE OPTIONS retained for compatibility
450		*/
451
452		# define SSL_OP_MICROSOFT_SESS_ID_BUG 0x0
453		# define SSL_OP_NETSCAPE_CHALLENGE_BUG 0x0
454		# define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0x0
455		# define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0x0
456		# define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0x0
457		# define SSL_OP_MSIE_SSLV2_RSA_PADDING 0x0
458		# define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0x0
459		# define SSL_OP_TLS_D5_BUG 0x0
460		# define SSL_OP_TLS_BLOCK_PADDING_BUG 0x0
461		# define SSL_OP_SINGLE_ECDH_USE 0x0
462		# define SSL_OP_SINGLE_DH_USE 0x0
463		# define SSL_OP_EPHEMERAL_RSA 0x0
464		# define SSL_OP_NO_SSLv2 0x0
465		# define SSL_OP_PKCS1_CHECK_1 0x0
466		# define SSL_OP_PKCS1_CHECK_2 0x0
467		# define SSL_OP_NETSCAPE_CA_DN_BUG 0x0
468		# define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0x0
469
470		/*
471		* Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
472		* when just a single record has been written):
473		*/
474		# define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001U
475		/*
476		* Make it possible to retry SSL_write() with changed buffer location (buffer
477		* contents must stay the same!); this is not the default to avoid the
478		* misconception that non-blocking SSL_write() behaves like non-blocking
479		* write():
480		*/
481		# define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
482		/*
483		* Never bother the application with retries if the transport is blocking:
484		*/
485		# define SSL_MODE_AUTO_RETRY 0x00000004U
486		/* Don't attempt to automatically build certificate chain */
487		# define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
488		/*
489		* Save RAM by releasing read and write buffers when they're empty. (SSL3 and
490		* TLS only.) Released buffers are freed.
491		*/
492		# define SSL_MODE_RELEASE_BUFFERS 0x00000010U
493		/*
494		* Send the current time in the Random fields of the ClientHello and
495		* ServerHello records for compatibility with hypothetical implementations
496		* that require it.
497		*/
498		# define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
499		# define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
500		/*
501		* Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
502		* that reconnect with a downgraded protocol version; see
503		* draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
504		* application attempts a normal handshake. Only use this in explicit
505		* fallback retries, following the guidance in
506		* draft-ietf-tls-downgrade-scsv-00.
507		*/
508		# define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
509		/*
510		* Support Asynchronous operation
511		*/
512		# define SSL_MODE_ASYNC 0x00000100U
513
514		/*
515		* When using DTLS/SCTP, include the terminating zero in the label
516		* used for computing the endpoint-pair shared secret. Required for
517		* interoperability with implementations having this bug like these
518		* older version of OpenSSL:
519		* - OpenSSL 1.0.0 series
520		* - OpenSSL 1.0.1 series
521		* - OpenSSL 1.0.2 series
522		* - OpenSSL 1.1.0 series
523		* - OpenSSL 1.1.1 and 1.1.1a
524		*/
525		# define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
526
527		/* Cert related flags */
528		/*
529		* Many implementations ignore some aspects of the TLS standards such as
530		* enforcing certificate chain algorithms. When this is set we enforce them.
531		*/
532		# define SSL_CERT_FLAG_TLS_STRICT 0x00000001U
533
534		/* Suite B modes, takes same values as certificate verify flags */
535		# define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY 0x10000
536		/* Suite B 192 bit only mode */
537		# define SSL_CERT_FLAG_SUITEB_192_LOS 0x20000
538		/* Suite B 128 bit mode allowing 192 bit algorithms */
539		# define SSL_CERT_FLAG_SUITEB_128_LOS 0x30000
540
541		/* Perform all sorts of protocol violations for testing purposes */
542		# define SSL_CERT_FLAG_BROKEN_PROTOCOL 0x10000000
543
544		/* Flags for building certificate chains */
545		/* Treat any existing certificates as untrusted CAs */
546		# define SSL_BUILD_CHAIN_FLAG_UNTRUSTED 0x1
547		/* Don't include root CA in chain */
548		# define SSL_BUILD_CHAIN_FLAG_NO_ROOT 0x2
549		/* Just check certificates already there */
550		# define SSL_BUILD_CHAIN_FLAG_CHECK 0x4
551		/* Ignore verification errors */
552		# define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR 0x8
553		/* Clear verification errors from queue */
554		# define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR 0x10
555
556		/* Flags returned by SSL_check_chain */
557		/* Certificate can be used with this session */
558		# define CERT_PKEY_VALID 0x1
559		/* Certificate can also be used for signing */
560		# define CERT_PKEY_SIGN 0x2
561		/* EE certificate signing algorithm OK */
562		# define CERT_PKEY_EE_SIGNATURE 0x10
563		/* CA signature algorithms OK */
564		# define CERT_PKEY_CA_SIGNATURE 0x20
565		/* EE certificate parameters OK */
566		# define CERT_PKEY_EE_PARAM 0x40
567		/* CA certificate parameters OK */
568		# define CERT_PKEY_CA_PARAM 0x80
569		/* Signing explicitly allowed as opposed to SHA1 fallback */
570		# define CERT_PKEY_EXPLICIT_SIGN 0x100
571		/* Client CA issuer names match (always set for server cert) */
572		# define CERT_PKEY_ISSUER_NAME 0x200
573		/* Cert type matches client types (always set for server cert) */
574		# define CERT_PKEY_CERT_TYPE 0x400
575		/* Cert chain suitable to Suite B */
576		# define CERT_PKEY_SUITEB 0x800
577
578		# define SSL_CONF_FLAG_CMDLINE 0x1
579		# define SSL_CONF_FLAG_FILE 0x2
580		# define SSL_CONF_FLAG_CLIENT 0x4
581		# define SSL_CONF_FLAG_SERVER 0x8
582		# define SSL_CONF_FLAG_SHOW_ERRORS 0x10
583		# define SSL_CONF_FLAG_CERTIFICATE 0x20
584		# define SSL_CONF_FLAG_REQUIRE_PRIVATE 0x40
585		/* Configuration value types */
586		# define SSL_CONF_TYPE_UNKNOWN 0x0
587		# define SSL_CONF_TYPE_STRING 0x1
588		# define SSL_CONF_TYPE_FILE 0x2
589		# define SSL_CONF_TYPE_DIR 0x3
590		# define SSL_CONF_TYPE_NONE 0x4
591		# define SSL_CONF_TYPE_STORE 0x5
592
593		/* Maximum length of the application-controlled segment of a a TLSv1.3 cookie */
594		# define SSL_COOKIE_LENGTH 4096
595
596		/*
597		* Note: SSL[_CTX]_set_{options,mode} use \|= op on the previous value, they
598		* cannot be used to clear bits.
599		*/
600
601		uint64_t SSL_CTX_get_options(const SSL_CTX *ctx);
602		uint64_t SSL_get_options(const SSL *s);
603		uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op);
604		uint64_t SSL_clear_options(SSL *s, uint64_t op);
605		uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op);
606		uint64_t SSL_set_options(SSL *s, uint64_t op);
607
608		# define SSL_CTX_set_mode(ctx,op) \
609		SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
610		# define SSL_CTX_clear_mode(ctx,op) \
611		SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
612		# define SSL_CTX_get_mode(ctx) \
613		SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
614		# define SSL_clear_mode(ssl,op) \
615		SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
616		# define SSL_set_mode(ssl,op) \
617		SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
618		# define SSL_get_mode(ssl) \
619		SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
620		# define SSL_set_mtu(ssl, mtu) \
621		SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
622		# define DTLS_set_link_mtu(ssl, mtu) \
623		SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
624		# define DTLS_get_link_min_mtu(ssl) \
625		SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)
626
627		# define SSL_get_secure_renegotiation_support(ssl) \
628		SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
629
630		# define SSL_CTX_set_cert_flags(ctx,op) \
631		SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
632		# define SSL_set_cert_flags(s,op) \
633		SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
634		# define SSL_CTX_clear_cert_flags(ctx,op) \
635		SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
636		# define SSL_clear_cert_flags(s,op) \
637		SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
638
639		void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
640		void (*cb) (int write_p, int version,
641		int content_type, const void *buf,
642		size_t len, SSL ssl, void arg));
643		void SSL_set_msg_callback(SSL *ssl,
644		void (*cb) (int write_p, int version,
645		int content_type, const void *buf,
646		size_t len, SSL ssl, void arg));
647		# define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
648		# define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
649
650		# define SSL_get_extms_support(s) \
651		SSL_ctrl((s),SSL_CTRL_GET_EXTMS_SUPPORT,0,NULL)
652
653		# ifndef OPENSSL_NO_SRP
654		/* see tls_srp.c */
655		# ifndef OPENSSL_NO_DEPRECATED_3_0
656		OSSL_DEPRECATEDIN_3_0 __owur int SSL_SRP_CTX_init(SSL *s);
657		OSSL_DEPRECATEDIN_3_0 __owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
658		OSSL_DEPRECATEDIN_3_0 int SSL_SRP_CTX_free(SSL *ctx);
659		OSSL_DEPRECATEDIN_3_0 int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
660		OSSL_DEPRECATEDIN_3_0 __owur int SSL_srp_server_param_with_username(SSL *s,
661		int *ad);
662		OSSL_DEPRECATEDIN_3_0 __owur int SRP_Calc_A_param(SSL *s);
663		# endif
664		# endif
665
666		/* 100k max cert list */
667		# define SSL_MAX_CERT_LIST_DEFAULT (1024*100)
668
669		# define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024*20)
670
671		/*
672		* This callback type is used inside SSL_CTX, SSL, and in the functions that
673		* set them. It is used to override the generation of SSL/TLS session IDs in
674		* a server. Return value should be zero on an error, non-zero to proceed.
675		* Also, callbacks should themselves check if the id they generate is unique
676		* otherwise the SSL handshake will fail with an error - callbacks can do
677		* this using the 'ssl' value they're passed by;
678		* SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
679		* is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
680		* bytes. The callback can alter this length to be less if desired. It is
681		* also an error for the callback to set the size to zero.
682		*/
683		typedef int (GEN_SESSION_CB) (SSL ssl, unsigned char *id,
684		unsigned int *id_len);
685
686		# define SSL_SESS_CACHE_OFF 0x0000
687		# define SSL_SESS_CACHE_CLIENT 0x0001
688		# define SSL_SESS_CACHE_SERVER 0x0002
689		# define SSL_SESS_CACHE_BOTH (SSL_SESS_CACHE_CLIENT\|SSL_SESS_CACHE_SERVER)
690		# define SSL_SESS_CACHE_NO_AUTO_CLEAR 0x0080
691		/* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
692		# define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 0x0100
693		# define SSL_SESS_CACHE_NO_INTERNAL_STORE 0x0200
694		# define SSL_SESS_CACHE_NO_INTERNAL \
695		(SSL_SESS_CACHE_NO_INTERNAL_LOOKUP\|SSL_SESS_CACHE_NO_INTERNAL_STORE)
696		# define SSL_SESS_CACHE_UPDATE_TIME 0x0400
697
698		LHASH_OF(SSL_SESSION) SSL_CTX_sessions(SSL_CTX ctx);
699		# define SSL_CTX_sess_number(ctx) \
700		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
701		# define SSL_CTX_sess_connect(ctx) \
702		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
703		# define SSL_CTX_sess_connect_good(ctx) \
704		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
705		# define SSL_CTX_sess_connect_renegotiate(ctx) \
706		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
707		# define SSL_CTX_sess_accept(ctx) \
708		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
709		# define SSL_CTX_sess_accept_renegotiate(ctx) \
710		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
711		# define SSL_CTX_sess_accept_good(ctx) \
712		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
713		# define SSL_CTX_sess_hits(ctx) \
714		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
715		# define SSL_CTX_sess_cb_hits(ctx) \
716		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
717		# define SSL_CTX_sess_misses(ctx) \
718		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
719		# define SSL_CTX_sess_timeouts(ctx) \
720		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
721		# define SSL_CTX_sess_cache_full(ctx) \
722		SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)
723
724		void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
725		int (new_session_cb) (struct ssl_st ssl,
726		SSL_SESSION *sess));
727		int (SSL_CTX_sess_get_new_cb(SSL_CTX ctx)) (struct ssl_st *ssl,
728		SSL_SESSION *sess);
729		void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
730		void (*remove_session_cb) (struct ssl_ctx_st
731		*ctx,
732		SSL_SESSION *sess));
733		void (SSL_CTX_sess_get_remove_cb(SSL_CTX ctx)) (struct ssl_ctx_st *ctx,
734		SSL_SESSION *sess);
735		void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
736		SSL_SESSION (get_session_cb) (struct ssl_st
737		*ssl,
738		const unsigned char
739		*data, int len,
740		int *copy));
741		SSL_SESSION (SSL_CTX_sess_get_get_cb(SSL_CTX ctx)) (struct ssl_st ssl,
742		const unsigned char *data,
743		int len, int *copy);
744		void SSL_CTX_set_info_callback(SSL_CTX *ctx,
745		void (cb) (const SSL ssl, int type, int val));
746		void (SSL_CTX_get_info_callback(SSL_CTX ctx)) (const SSL *ssl, int type,
747		int val);
748		void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
749		int (client_cert_cb) (SSL ssl, X509 **x509,
750		EVP_PKEY **pkey));
751		int (SSL_CTX_get_client_cert_cb(SSL_CTX ctx)) (SSL ssl, X509 *x509,
752		EVP_PKEY **pkey);
753		# ifndef OPENSSL_NO_ENGINE
754		__owur int SSL_CTX_set_client_cert_engine(SSL_CTX ctx, ENGINE e);
755		# endif
756		void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
757		int (app_gen_cookie_cb) (SSL ssl,
758		unsigned char
759		*cookie,
760		unsigned int
761		*cookie_len));
762		void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
763		int (app_verify_cookie_cb) (SSL ssl,
764		const unsigned
765		char *cookie,
766		unsigned int
767		cookie_len));
768
769		void SSL_CTX_set_stateless_cookie_generate_cb(
770		SSL_CTX *ctx,
771		int (gen_stateless_cookie_cb) (SSL ssl,
772		unsigned char *cookie,
773		size_t *cookie_len));
774		void SSL_CTX_set_stateless_cookie_verify_cb(
775		SSL_CTX *ctx,
776		int (verify_stateless_cookie_cb) (SSL ssl,
777		const unsigned char *cookie,
778		size_t cookie_len));
779		# ifndef OPENSSL_NO_NEXTPROTONEG
780
781		typedef int (SSL_CTX_npn_advertised_cb_func)(SSL ssl,
782		const unsigned char **out,
783		unsigned int *outlen,
784		void *arg);
785		void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
786		SSL_CTX_npn_advertised_cb_func cb,
787		void *arg);
788		# define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
789
790		typedef int (SSL_CTX_npn_select_cb_func)(SSL s,
791		unsigned char **out,
792		unsigned char *outlen,
793		const unsigned char *in,
794		unsigned int inlen,
795		void *arg);
796		void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
797		SSL_CTX_npn_select_cb_func cb,
798		void *arg);
799		# define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
800
801		void SSL_get0_next_proto_negotiated(const SSL s, const unsigned char *data,
802		unsigned *len);
803		# define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
804		# endif
805
806		__owur int SSL_select_next_proto(unsigned char *out, unsigned char outlen,
807		const unsigned char *in, unsigned int inlen,
808		const unsigned char *client,
809		unsigned int client_len);
810
811		# define OPENSSL_NPN_UNSUPPORTED 0
812		# define OPENSSL_NPN_NEGOTIATED 1
813		# define OPENSSL_NPN_NO_OVERLAP 2
814
815		__owur int SSL_CTX_set_alpn_protos(SSL_CTX ctx, const unsigned char protos,
816		unsigned int protos_len);
817		__owur int SSL_set_alpn_protos(SSL ssl, const unsigned char protos,
818		unsigned int protos_len);
819		typedef int (SSL_CTX_alpn_select_cb_func)(SSL ssl,
820		const unsigned char **out,
821		unsigned char *outlen,
822		const unsigned char *in,
823		unsigned int inlen,
824		void *arg);
825		void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
826		SSL_CTX_alpn_select_cb_func cb,
827		void *arg);
828		void SSL_get0_alpn_selected(const SSL ssl, const unsigned char *data,
829		unsigned int *len);
830
831		# ifndef OPENSSL_NO_PSK
832		/*
833		* the maximum length of the buffer given to callbacks containing the
834		* resulting identity/psk
835		*/
836		# define PSK_MAX_IDENTITY_LEN 256
837		# define PSK_MAX_PSK_LEN 512
838		typedef unsigned int (SSL_psk_client_cb_func)(SSL ssl,
839		const char *hint,
840		char *identity,
841		unsigned int max_identity_len,
842		unsigned char *psk,
843		unsigned int max_psk_len);
844		void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
845		void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
846
847		typedef unsigned int (SSL_psk_server_cb_func)(SSL ssl,
848		const char *identity,
849		unsigned char *psk,
850		unsigned int max_psk_len);
851		void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
852		void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
853
854		__owur int SSL_CTX_use_psk_identity_hint(SSL_CTX ctx, const char identity_hint);
855		__owur int SSL_use_psk_identity_hint(SSL s, const char identity_hint);
856		const char SSL_get_psk_identity_hint(const SSL s);
857		const char SSL_get_psk_identity(const SSL s);
858		# endif
859
860		typedef int (SSL_psk_find_session_cb_func)(SSL ssl,
861		const unsigned char *identity,
862		size_t identity_len,
863		SSL_SESSION **sess);
864		typedef int (SSL_psk_use_session_cb_func)(SSL ssl, const EVP_MD *md,
865		const unsigned char **id,
866		size_t *idlen,
867		SSL_SESSION **sess);
868
869		void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
870		void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
871		SSL_psk_find_session_cb_func cb);
872		void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
873		void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
874		SSL_psk_use_session_cb_func cb);
875
876		/* Register callbacks to handle custom TLS Extensions for client or server. */
877
878		__owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
879		unsigned int ext_type);
880
881		__owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx,
882		unsigned int ext_type,
883		custom_ext_add_cb add_cb,
884		custom_ext_free_cb free_cb,
885		void *add_arg,
886		custom_ext_parse_cb parse_cb,
887		void *parse_arg);
888
889		__owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx,
890		unsigned int ext_type,
891		custom_ext_add_cb add_cb,
892		custom_ext_free_cb free_cb,
893		void *add_arg,
894		custom_ext_parse_cb parse_cb,
895		void *parse_arg);
896
897		__owur int SSL_CTX_add_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
898		unsigned int context,
899		SSL_custom_ext_add_cb_ex add_cb,
900		SSL_custom_ext_free_cb_ex free_cb,
901		void *add_arg,
902		SSL_custom_ext_parse_cb_ex parse_cb,
903		void *parse_arg);
904
905		__owur int SSL_extension_supported(unsigned int ext_type);
906
907		# define SSL_NOTHING 1
908		# define SSL_WRITING 2
909		# define SSL_READING 3
910		# define SSL_X509_LOOKUP 4
911		# define SSL_ASYNC_PAUSED 5
912		# define SSL_ASYNC_NO_JOBS 6
913		# define SSL_CLIENT_HELLO_CB 7
914		# define SSL_RETRY_VERIFY 8
915
916		/* These will only be used when doing non-blocking IO */
917		# define SSL_want_nothing(s) (SSL_want(s) == SSL_NOTHING)
918		# define SSL_want_read(s) (SSL_want(s) == SSL_READING)
919		# define SSL_want_write(s) (SSL_want(s) == SSL_WRITING)
920		# define SSL_want_x509_lookup(s) (SSL_want(s) == SSL_X509_LOOKUP)
921		# define SSL_want_retry_verify(s) (SSL_want(s) == SSL_RETRY_VERIFY)
922		# define SSL_want_async(s) (SSL_want(s) == SSL_ASYNC_PAUSED)
923		# define SSL_want_async_job(s) (SSL_want(s) == SSL_ASYNC_NO_JOBS)
924		# define SSL_want_client_hello_cb(s) (SSL_want(s) == SSL_CLIENT_HELLO_CB)
925
926		# define SSL_MAC_FLAG_READ_MAC_STREAM 1
927		# define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
928		# define SSL_MAC_FLAG_READ_MAC_TLSTREE 4
929		# define SSL_MAC_FLAG_WRITE_MAC_TLSTREE 8
930
931		/*
932		* A callback for logging out TLS key material. This callback should log out
933		* \|line\| followed by a newline.
934		*/
935		typedef void (SSL_CTX_keylog_cb_func)(const SSL ssl, const char *line);
936
937		/*
938		* SSL_CTX_set_keylog_callback configures a callback to log key material. This
939		* is intended for debugging use with tools like Wireshark. The cb function
940		* should log line followed by a newline.
941		*/
942		void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
943
944		/*
945		* SSL_CTX_get_keylog_callback returns the callback configured by
946		* SSL_CTX_set_keylog_callback.
947		*/
948		SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
949
950		int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
951		uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
952		int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
953		uint32_t SSL_get_max_early_data(const SSL *s);
954		int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data);
955		uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx);
956		int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data);
957		uint32_t SSL_get_recv_max_early_data(const SSL *s);
958
959		#ifdef __cplusplus
960		}
961		#endif
962
963		# include
964		# include
965		# include /* This is mostly sslv3 with a few tweaks */
966		# include /* Datagram TLS */
967		# include /* Support for the use_srtp extension */
968
969		#ifdef __cplusplus
970		extern "C" {
971		#endif
972
973		/*
974		* These need to be after the above set of includes due to a compiler bug
975		* in VisualStudio 2015
976		*/
977	242	SKM_DEFINE_STACK_OF_INTERNAL(SSL_CIPHER, const SSL_CIPHER, SSL_CIPHER)
978		#define sk_SSL_CIPHER_num(sk) OPENSSL_sk_num(ossl_check_const_SSL_CIPHER_sk_type(sk))
979		#define sk_SSL_CIPHER_value(sk, idx) ((const SSL_CIPHER *)OPENSSL_sk_value(ossl_check_const_SSL_CIPHER_sk_type(sk), (idx)))
980		#define sk_SSL_CIPHER_new(cmp) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new(ossl_check_SSL_CIPHER_compfunc_type(cmp)))
981		#define sk_SSL_CIPHER_new_null() ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new_null())
982		#define sk_SSL_CIPHER_new_reserve(cmp, n) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new_reserve(ossl_check_SSL_CIPHER_compfunc_type(cmp), (n)))
983		#define sk_SSL_CIPHER_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SSL_CIPHER_sk_type(sk), (n))
984		#define sk_SSL_CIPHER_free(sk) OPENSSL_sk_free(ossl_check_SSL_CIPHER_sk_type(sk))
985		#define sk_SSL_CIPHER_zero(sk) OPENSSL_sk_zero(ossl_check_SSL_CIPHER_sk_type(sk))
986		#define sk_SSL_CIPHER_delete(sk, i) ((const SSL_CIPHER *)OPENSSL_sk_delete(ossl_check_SSL_CIPHER_sk_type(sk), (i)))
987		#define sk_SSL_CIPHER_delete_ptr(sk, ptr) ((const SSL_CIPHER *)OPENSSL_sk_delete_ptr(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr)))
988		#define sk_SSL_CIPHER_push(sk, ptr) OPENSSL_sk_push(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
989		#define sk_SSL_CIPHER_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
990		#define sk_SSL_CIPHER_pop(sk) ((const SSL_CIPHER *)OPENSSL_sk_pop(ossl_check_SSL_CIPHER_sk_type(sk)))
991		#define sk_SSL_CIPHER_shift(sk) ((const SSL_CIPHER *)OPENSSL_sk_shift(ossl_check_SSL_CIPHER_sk_type(sk)))
992		#define sk_SSL_CIPHER_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SSL_CIPHER_sk_type(sk),ossl_check_SSL_CIPHER_freefunc_type(freefunc))
993		#define sk_SSL_CIPHER_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr), (idx))
994		#define sk_SSL_CIPHER_set(sk, idx, ptr) ((const SSL_CIPHER *)OPENSSL_sk_set(ossl_check_SSL_CIPHER_sk_type(sk), (idx), ossl_check_SSL_CIPHER_type(ptr)))
995		#define sk_SSL_CIPHER_find(sk, ptr) OPENSSL_sk_find(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
996		#define sk_SSL_CIPHER_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
997		#define sk_SSL_CIPHER_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr), pnum)
998		#define sk_SSL_CIPHER_sort(sk) OPENSSL_sk_sort(ossl_check_SSL_CIPHER_sk_type(sk))
999		#define sk_SSL_CIPHER_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SSL_CIPHER_sk_type(sk))
1000		#define sk_SSL_CIPHER_dup(sk) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_dup(ossl_check_const_SSL_CIPHER_sk_type(sk)))
1001		#define sk_SSL_CIPHER_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_deep_copy(ossl_check_const_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_copyfunc_type(copyfunc), ossl_check_SSL_CIPHER_freefunc_type(freefunc)))
1002		#define sk_SSL_CIPHER_set_cmp_func(sk, cmp) ((sk_SSL_CIPHER_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_compfunc_type(cmp)))
1003		SKM_DEFINE_STACK_OF_INTERNAL(SSL_COMP, SSL_COMP, SSL_COMP)
1004		#define sk_SSL_COMP_num(sk) OPENSSL_sk_num(ossl_check_const_SSL_COMP_sk_type(sk))
1005		#define sk_SSL_COMP_value(sk, idx) ((SSL_COMP *)OPENSSL_sk_value(ossl_check_const_SSL_COMP_sk_type(sk), (idx)))
1006		#define sk_SSL_COMP_new(cmp) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_new(ossl_check_SSL_COMP_compfunc_type(cmp)))
1007		#define sk_SSL_COMP_new_null() ((STACK_OF(SSL_COMP) *)OPENSSL_sk_new_null())
1008		#define sk_SSL_COMP_new_reserve(cmp, n) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_new_reserve(ossl_check_SSL_COMP_compfunc_type(cmp), (n)))
1009		#define sk_SSL_COMP_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SSL_COMP_sk_type(sk), (n))
1010		#define sk_SSL_COMP_free(sk) OPENSSL_sk_free(ossl_check_SSL_COMP_sk_type(sk))
1011		#define sk_SSL_COMP_zero(sk) OPENSSL_sk_zero(ossl_check_SSL_COMP_sk_type(sk))
1012		#define sk_SSL_COMP_delete(sk, i) ((SSL_COMP *)OPENSSL_sk_delete(ossl_check_SSL_COMP_sk_type(sk), (i)))
1013		#define sk_SSL_COMP_delete_ptr(sk, ptr) ((SSL_COMP *)OPENSSL_sk_delete_ptr(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr)))
1014		#define sk_SSL_COMP_push(sk, ptr) OPENSSL_sk_push(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1015		#define sk_SSL_COMP_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1016		#define sk_SSL_COMP_pop(sk) ((SSL_COMP *)OPENSSL_sk_pop(ossl_check_SSL_COMP_sk_type(sk)))
1017		#define sk_SSL_COMP_shift(sk) ((SSL_COMP *)OPENSSL_sk_shift(ossl_check_SSL_COMP_sk_type(sk)))
1018		#define sk_SSL_COMP_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SSL_COMP_sk_type(sk),ossl_check_SSL_COMP_freefunc_type(freefunc))
1019		#define sk_SSL_COMP_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr), (idx))
1020		#define sk_SSL_COMP_set(sk, idx, ptr) ((SSL_COMP *)OPENSSL_sk_set(ossl_check_SSL_COMP_sk_type(sk), (idx), ossl_check_SSL_COMP_type(ptr)))
1021		#define sk_SSL_COMP_find(sk, ptr) OPENSSL_sk_find(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1022		#define sk_SSL_COMP_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr))
1023		#define sk_SSL_COMP_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_type(ptr), pnum)
1024		#define sk_SSL_COMP_sort(sk) OPENSSL_sk_sort(ossl_check_SSL_COMP_sk_type(sk))
1025		#define sk_SSL_COMP_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SSL_COMP_sk_type(sk))
1026		#define sk_SSL_COMP_dup(sk) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_dup(ossl_check_const_SSL_COMP_sk_type(sk)))
1027		#define sk_SSL_COMP_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SSL_COMP) *)OPENSSL_sk_deep_copy(ossl_check_const_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_copyfunc_type(copyfunc), ossl_check_SSL_COMP_freefunc_type(freefunc)))
1028		#define sk_SSL_COMP_set_cmp_func(sk, cmp) ((sk_SSL_COMP_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SSL_COMP_sk_type(sk), ossl_check_SSL_COMP_compfunc_type(cmp)))
1029
1030
1031		/* compatibility */
1032		# define SSL_set_app_data(s,arg) (SSL_set_ex_data(s,0,(char *)(arg)))
1033		# define SSL_get_app_data(s) (SSL_get_ex_data(s,0))
1034		# define SSL_SESSION_set_app_data(s,a) (SSL_SESSION_set_ex_data(s,0, \
1035		(char *)(a)))
1036		# define SSL_SESSION_get_app_data(s) (SSL_SESSION_get_ex_data(s,0))
1037		# define SSL_CTX_get_app_data(ctx) (SSL_CTX_get_ex_data(ctx,0))
1038		# define SSL_CTX_set_app_data(ctx,arg) (SSL_CTX_set_ex_data(ctx,0, \
1039		(char *)(arg)))
1040		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
1041		OSSL_DEPRECATEDIN_1_1_0 void SSL_set_debug(SSL *s, int debug);
1042		# endif
1043
1044		/* TLSv1.3 KeyUpdate message types */
1045		/* -1 used so that this is an invalid value for the on-the-wire protocol */
1046		#define SSL_KEY_UPDATE_NONE -1
1047		/* Values as defined for the on-the-wire protocol */
1048		#define SSL_KEY_UPDATE_NOT_REQUESTED 0
1049		#define SSL_KEY_UPDATE_REQUESTED 1
1050
1051		/*
1052		* The valid handshake states (one for each type message sent and one for each
1053		* type of message received). There are also two "special" states:
1054		* TLS = TLS or DTLS state
1055		* DTLS = DTLS specific state
1056		* CR/SR = Client Read/Server Read
1057		* CW/SW = Client Write/Server Write
1058		*
1059		* The "special" states are:
1060		* TLS_ST_BEFORE = No handshake has been initiated yet
1061		* TLS_ST_OK = A handshake has been successfully completed
1062		*/
1063		typedef enum {
1064		TLS_ST_BEFORE,
1065		TLS_ST_OK,
1066		DTLS_ST_CR_HELLO_VERIFY_REQUEST,
1067		TLS_ST_CR_SRVR_HELLO,
1068		TLS_ST_CR_CERT,
1069		TLS_ST_CR_CERT_STATUS,
1070		TLS_ST_CR_KEY_EXCH,
1071		TLS_ST_CR_CERT_REQ,
1072		TLS_ST_CR_SRVR_DONE,
1073		TLS_ST_CR_SESSION_TICKET,
1074		TLS_ST_CR_CHANGE,
1075		TLS_ST_CR_FINISHED,
1076		TLS_ST_CW_CLNT_HELLO,
1077		TLS_ST_CW_CERT,
1078		TLS_ST_CW_KEY_EXCH,
1079		TLS_ST_CW_CERT_VRFY,
1080		TLS_ST_CW_CHANGE,
1081		TLS_ST_CW_NEXT_PROTO,
1082		TLS_ST_CW_FINISHED,
1083		TLS_ST_SW_HELLO_REQ,
1084		TLS_ST_SR_CLNT_HELLO,
1085		DTLS_ST_SW_HELLO_VERIFY_REQUEST,
1086		TLS_ST_SW_SRVR_HELLO,
1087		TLS_ST_SW_CERT,
1088		TLS_ST_SW_KEY_EXCH,
1089		TLS_ST_SW_CERT_REQ,
1090		TLS_ST_SW_SRVR_DONE,
1091		TLS_ST_SR_CERT,
1092		TLS_ST_SR_KEY_EXCH,
1093		TLS_ST_SR_CERT_VRFY,
1094		TLS_ST_SR_NEXT_PROTO,
1095		TLS_ST_SR_CHANGE,
1096		TLS_ST_SR_FINISHED,
1097		TLS_ST_SW_SESSION_TICKET,
1098		TLS_ST_SW_CERT_STATUS,
1099		TLS_ST_SW_CHANGE,
1100		TLS_ST_SW_FINISHED,
1101		TLS_ST_SW_ENCRYPTED_EXTENSIONS,
1102		TLS_ST_CR_ENCRYPTED_EXTENSIONS,
1103		TLS_ST_CR_CERT_VRFY,
1104		TLS_ST_SW_CERT_VRFY,
1105		TLS_ST_CR_HELLO_REQ,
1106		TLS_ST_SW_KEY_UPDATE,
1107		TLS_ST_CW_KEY_UPDATE,
1108		TLS_ST_SR_KEY_UPDATE,
1109		TLS_ST_CR_KEY_UPDATE,
1110		TLS_ST_EARLY_DATA,
1111		TLS_ST_PENDING_EARLY_DATA_END,
1112		TLS_ST_CW_END_OF_EARLY_DATA,
1113		TLS_ST_SR_END_OF_EARLY_DATA
1114		} OSSL_HANDSHAKE_STATE;
1115
1116		/*
1117		* Most of the following state values are no longer used and are defined to be
1118		* the closest equivalent value in the current state machine code. Not all
1119		* defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
1120		* and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
1121		* SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
1122		*/
1123
1124		# define SSL_ST_CONNECT 0x1000
1125		# define SSL_ST_ACCEPT 0x2000
1126
1127		# define SSL_ST_MASK 0x0FFF
1128
1129		# define SSL_CB_LOOP 0x01
1130		# define SSL_CB_EXIT 0x02
1131		# define SSL_CB_READ 0x04
1132		# define SSL_CB_WRITE 0x08
1133		# define SSL_CB_ALERT 0x4000/* used in callback */
1134		# define SSL_CB_READ_ALERT (SSL_CB_ALERT\|SSL_CB_READ)
1135		# define SSL_CB_WRITE_ALERT (SSL_CB_ALERT\|SSL_CB_WRITE)
1136		# define SSL_CB_ACCEPT_LOOP (SSL_ST_ACCEPT\|SSL_CB_LOOP)
1137		# define SSL_CB_ACCEPT_EXIT (SSL_ST_ACCEPT\|SSL_CB_EXIT)
1138		# define SSL_CB_CONNECT_LOOP (SSL_ST_CONNECT\|SSL_CB_LOOP)
1139		# define SSL_CB_CONNECT_EXIT (SSL_ST_CONNECT\|SSL_CB_EXIT)
1140		# define SSL_CB_HANDSHAKE_START 0x10
1141		# define SSL_CB_HANDSHAKE_DONE 0x20
1142
1143		/* Is the SSL_connection established? */
1144		# define SSL_in_connect_init(a) (SSL_in_init(a) && !SSL_is_server(a))
1145		# define SSL_in_accept_init(a) (SSL_in_init(a) && SSL_is_server(a))
1146		int SSL_in_init(const SSL *s);
1147		int SSL_in_before(const SSL *s);
1148		int SSL_is_init_finished(const SSL *s);
1149
1150		/*
1151		* The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
1152		* should not need these
1153		*/
1154		# define SSL_ST_READ_HEADER 0xF0
1155		# define SSL_ST_READ_BODY 0xF1
1156		# define SSL_ST_READ_DONE 0xF2
1157
1158		/*-
1159		* Obtain latest Finished message
1160		* -- that we sent (SSL_get_finished)
1161		* -- that we expected from peer (SSL_get_peer_finished).
1162		* Returns length (0 == no Finished so far), copies up to 'count' bytes.
1163		*/
1164		size_t SSL_get_finished(const SSL s, void buf, size_t count);
1165		size_t SSL_get_peer_finished(const SSL s, void buf, size_t count);
1166
1167		/*
1168		* use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 3 options are
1169		* 'ored' with SSL_VERIFY_PEER if they are desired
1170		*/
1171		# define SSL_VERIFY_NONE 0x00
1172		# define SSL_VERIFY_PEER 0x01
1173		# define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
1174		# define SSL_VERIFY_CLIENT_ONCE 0x04
1175		# define SSL_VERIFY_POST_HANDSHAKE 0x08
1176
1177		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
1178		# define OpenSSL_add_ssl_algorithms() SSL_library_init()
1179		# define SSLeay_add_ssl_algorithms() SSL_library_init()
1180		# endif
1181
1182		/* More backward compatibility */
1183		# define SSL_get_cipher(s) \
1184		SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1185		# define SSL_get_cipher_bits(s,np) \
1186		SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
1187		# define SSL_get_cipher_version(s) \
1188		SSL_CIPHER_get_version(SSL_get_current_cipher(s))
1189		# define SSL_get_cipher_name(s) \
1190		SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1191		# define SSL_get_time(a) SSL_SESSION_get_time(a)
1192		# define SSL_set_time(a,b) SSL_SESSION_set_time((a),(b))
1193		# define SSL_get_timeout(a) SSL_SESSION_get_timeout(a)
1194		# define SSL_set_timeout(a,b) SSL_SESSION_set_timeout((a),(b))
1195
1196		# define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
1197		# define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)
1198
1199		DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
1200		# define SSL_AD_REASON_OFFSET 1000/* offset to get SSL_R_... value
1201		* from SSL_AD_... */
1202		/* These alert types are for SSLv3 and TLSv1 */
1203		# define SSL_AD_CLOSE_NOTIFY SSL3_AD_CLOSE_NOTIFY
1204		/* fatal */
1205		# define SSL_AD_UNEXPECTED_MESSAGE SSL3_AD_UNEXPECTED_MESSAGE
1206		/* fatal */
1207		# define SSL_AD_BAD_RECORD_MAC SSL3_AD_BAD_RECORD_MAC
1208		# define SSL_AD_DECRYPTION_FAILED TLS1_AD_DECRYPTION_FAILED
1209		# define SSL_AD_RECORD_OVERFLOW TLS1_AD_RECORD_OVERFLOW
1210		/* fatal */
1211		# define SSL_AD_DECOMPRESSION_FAILURE SSL3_AD_DECOMPRESSION_FAILURE
1212		/* fatal */
1213		# define SSL_AD_HANDSHAKE_FAILURE SSL3_AD_HANDSHAKE_FAILURE
1214		/* Not for TLS */
1215		# define SSL_AD_NO_CERTIFICATE SSL3_AD_NO_CERTIFICATE
1216		# define SSL_AD_BAD_CERTIFICATE SSL3_AD_BAD_CERTIFICATE
1217		# define SSL_AD_UNSUPPORTED_CERTIFICATE SSL3_AD_UNSUPPORTED_CERTIFICATE
1218		# define SSL_AD_CERTIFICATE_REVOKED SSL3_AD_CERTIFICATE_REVOKED
1219		# define SSL_AD_CERTIFICATE_EXPIRED SSL3_AD_CERTIFICATE_EXPIRED
1220		# define SSL_AD_CERTIFICATE_UNKNOWN SSL3_AD_CERTIFICATE_UNKNOWN
1221		/* fatal */
1222		# define SSL_AD_ILLEGAL_PARAMETER SSL3_AD_ILLEGAL_PARAMETER
1223		/* fatal */
1224		# define SSL_AD_UNKNOWN_CA TLS1_AD_UNKNOWN_CA
1225		/* fatal */
1226		# define SSL_AD_ACCESS_DENIED TLS1_AD_ACCESS_DENIED
1227		/* fatal */
1228		# define SSL_AD_DECODE_ERROR TLS1_AD_DECODE_ERROR
1229		# define SSL_AD_DECRYPT_ERROR TLS1_AD_DECRYPT_ERROR
1230		/* fatal */
1231		# define SSL_AD_EXPORT_RESTRICTION TLS1_AD_EXPORT_RESTRICTION
1232		/* fatal */
1233		# define SSL_AD_PROTOCOL_VERSION TLS1_AD_PROTOCOL_VERSION
1234		/* fatal */
1235		# define SSL_AD_INSUFFICIENT_SECURITY TLS1_AD_INSUFFICIENT_SECURITY
1236		/* fatal */
1237		# define SSL_AD_INTERNAL_ERROR TLS1_AD_INTERNAL_ERROR
1238		# define SSL_AD_USER_CANCELLED TLS1_AD_USER_CANCELLED
1239		# define SSL_AD_NO_RENEGOTIATION TLS1_AD_NO_RENEGOTIATION
1240		# define SSL_AD_MISSING_EXTENSION TLS13_AD_MISSING_EXTENSION
1241		# define SSL_AD_CERTIFICATE_REQUIRED TLS13_AD_CERTIFICATE_REQUIRED
1242		# define SSL_AD_UNSUPPORTED_EXTENSION TLS1_AD_UNSUPPORTED_EXTENSION
1243		# define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
1244		# define SSL_AD_UNRECOGNIZED_NAME TLS1_AD_UNRECOGNIZED_NAME
1245		# define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
1246		# define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
1247		/* fatal */
1248		# define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY
1249		/* fatal */
1250		# define SSL_AD_INAPPROPRIATE_FALLBACK TLS1_AD_INAPPROPRIATE_FALLBACK
1251		# define SSL_AD_NO_APPLICATION_PROTOCOL TLS1_AD_NO_APPLICATION_PROTOCOL
1252		# define SSL_ERROR_NONE 0
1253		# define SSL_ERROR_SSL 1
1254		# define SSL_ERROR_WANT_READ 2
1255		# define SSL_ERROR_WANT_WRITE 3
1256		# define SSL_ERROR_WANT_X509_LOOKUP 4
1257		# define SSL_ERROR_SYSCALL 5/* look at error stack/return
1258		* value/errno */
1259		# define SSL_ERROR_ZERO_RETURN 6
1260		# define SSL_ERROR_WANT_CONNECT 7
1261		# define SSL_ERROR_WANT_ACCEPT 8
1262		# define SSL_ERROR_WANT_ASYNC 9
1263		# define SSL_ERROR_WANT_ASYNC_JOB 10
1264		# define SSL_ERROR_WANT_CLIENT_HELLO_CB 11
1265		# define SSL_ERROR_WANT_RETRY_VERIFY 12
1266
1267		# ifndef OPENSSL_NO_DEPRECATED_3_0
1268		# define SSL_CTRL_SET_TMP_DH 3
1269		# define SSL_CTRL_SET_TMP_ECDH 4
1270		# define SSL_CTRL_SET_TMP_DH_CB 6
1271		# endif
1272
1273		# define SSL_CTRL_GET_CLIENT_CERT_REQUEST 9
1274		# define SSL_CTRL_GET_NUM_RENEGOTIATIONS 10
1275		# define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS 11
1276		# define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS 12
1277		# define SSL_CTRL_GET_FLAGS 13
1278		# define SSL_CTRL_EXTRA_CHAIN_CERT 14
1279		# define SSL_CTRL_SET_MSG_CALLBACK 15
1280		# define SSL_CTRL_SET_MSG_CALLBACK_ARG 16
1281		/* only applies to datagram connections */
1282		# define SSL_CTRL_SET_MTU 17
1283		/* Stats */
1284		# define SSL_CTRL_SESS_NUMBER 20
1285		# define SSL_CTRL_SESS_CONNECT 21
1286		# define SSL_CTRL_SESS_CONNECT_GOOD 22
1287		# define SSL_CTRL_SESS_CONNECT_RENEGOTIATE 23
1288		# define SSL_CTRL_SESS_ACCEPT 24
1289		# define SSL_CTRL_SESS_ACCEPT_GOOD 25
1290		# define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE 26
1291		# define SSL_CTRL_SESS_HIT 27
1292		# define SSL_CTRL_SESS_CB_HIT 28
1293		# define SSL_CTRL_SESS_MISSES 29
1294		# define SSL_CTRL_SESS_TIMEOUTS 30
1295		# define SSL_CTRL_SESS_CACHE_FULL 31
1296		# define SSL_CTRL_MODE 33
1297		# define SSL_CTRL_GET_READ_AHEAD 40
1298		# define SSL_CTRL_SET_READ_AHEAD 41
1299		# define SSL_CTRL_SET_SESS_CACHE_SIZE 42
1300		# define SSL_CTRL_GET_SESS_CACHE_SIZE 43
1301		# define SSL_CTRL_SET_SESS_CACHE_MODE 44
1302		# define SSL_CTRL_GET_SESS_CACHE_MODE 45
1303		# define SSL_CTRL_GET_MAX_CERT_LIST 50
1304		# define SSL_CTRL_SET_MAX_CERT_LIST 51
1305		# define SSL_CTRL_SET_MAX_SEND_FRAGMENT 52
1306		/* see tls1.h for macros based on these */
1307		# define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 53
1308		# define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 54
1309		# define SSL_CTRL_SET_TLSEXT_HOSTNAME 55
1310		# define SSL_CTRL_SET_TLSEXT_DEBUG_CB 56
1311		# define SSL_CTRL_SET_TLSEXT_DEBUG_ARG 57
1312		# define SSL_CTRL_GET_TLSEXT_TICKET_KEYS 58
1313		# define SSL_CTRL_SET_TLSEXT_TICKET_KEYS 59
1314		/# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT 60 /
1315		/# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 /
1316		/# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 /
1317		# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB 63
1318		# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG 64
1319		# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE 65
1320		# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS 66
1321		# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS 67
1322		# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS 68
1323		# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS 69
1324		# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP 70
1325		# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP 71
1326		# ifndef OPENSSL_NO_DEPRECATED_3_0
1327		# define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB 72
1328		# endif
1329		# define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB 75
1330		# define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB 76
1331		# define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB 77
1332		# define SSL_CTRL_SET_SRP_ARG 78
1333		# define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME 79
1334		# define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH 80
1335		# define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD 81
1336		# define DTLS_CTRL_GET_TIMEOUT 73
1337		# define DTLS_CTRL_HANDLE_TIMEOUT 74
1338		# define SSL_CTRL_GET_RI_SUPPORT 76
1339		# define SSL_CTRL_CLEAR_MODE 78
1340		# define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB 79
1341		# define SSL_CTRL_GET_EXTRA_CHAIN_CERTS 82
1342		# define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS 83
1343		# define SSL_CTRL_CHAIN 88
1344		# define SSL_CTRL_CHAIN_CERT 89
1345		# define SSL_CTRL_GET_GROUPS 90
1346		# define SSL_CTRL_SET_GROUPS 91
1347		# define SSL_CTRL_SET_GROUPS_LIST 92
1348		# define SSL_CTRL_GET_SHARED_GROUP 93
1349		# define SSL_CTRL_SET_SIGALGS 97
1350		# define SSL_CTRL_SET_SIGALGS_LIST 98
1351		# define SSL_CTRL_CERT_FLAGS 99
1352		# define SSL_CTRL_CLEAR_CERT_FLAGS 100
1353		# define SSL_CTRL_SET_CLIENT_SIGALGS 101
1354		# define SSL_CTRL_SET_CLIENT_SIGALGS_LIST 102
1355		# define SSL_CTRL_GET_CLIENT_CERT_TYPES 103
1356		# define SSL_CTRL_SET_CLIENT_CERT_TYPES 104
1357		# define SSL_CTRL_BUILD_CERT_CHAIN 105
1358		# define SSL_CTRL_SET_VERIFY_CERT_STORE 106
1359		# define SSL_CTRL_SET_CHAIN_CERT_STORE 107
1360		# define SSL_CTRL_GET_PEER_SIGNATURE_NID 108
1361		# define SSL_CTRL_GET_PEER_TMP_KEY 109
1362		# define SSL_CTRL_GET_RAW_CIPHERLIST 110
1363		# define SSL_CTRL_GET_EC_POINT_FORMATS 111
1364		# define SSL_CTRL_GET_CHAIN_CERTS 115
1365		# define SSL_CTRL_SELECT_CURRENT_CERT 116
1366		# define SSL_CTRL_SET_CURRENT_CERT 117
1367		# define SSL_CTRL_SET_DH_AUTO 118
1368		# define DTLS_CTRL_SET_LINK_MTU 120
1369		# define DTLS_CTRL_GET_LINK_MIN_MTU 121
1370		# define SSL_CTRL_GET_EXTMS_SUPPORT 122
1371		# define SSL_CTRL_SET_MIN_PROTO_VERSION 123
1372		# define SSL_CTRL_SET_MAX_PROTO_VERSION 124
1373		# define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT 125
1374		# define SSL_CTRL_SET_MAX_PIPELINES 126
1375		# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE 127
1376		# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB 128
1377		# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG 129
1378		# define SSL_CTRL_GET_MIN_PROTO_VERSION 130
1379		# define SSL_CTRL_GET_MAX_PROTO_VERSION 131
1380		# define SSL_CTRL_GET_SIGNATURE_NID 132
1381		# define SSL_CTRL_GET_TMP_KEY 133
1382		# define SSL_CTRL_GET_NEGOTIATED_GROUP 134
1383		# define SSL_CTRL_SET_RETRY_VERIFY 136
1384		# define SSL_CTRL_GET_VERIFY_CERT_STORE 137
1385		# define SSL_CTRL_GET_CHAIN_CERT_STORE 138
1386		# define SSL_CERT_SET_FIRST 1
1387		# define SSL_CERT_SET_NEXT 2
1388		# define SSL_CERT_SET_SERVER 3
1389		# define DTLSv1_get_timeout(ssl, arg) \
1390		SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)(arg))
1391		# define DTLSv1_handle_timeout(ssl) \
1392		SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
1393		# define SSL_num_renegotiations(ssl) \
1394		SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
1395		# define SSL_clear_num_renegotiations(ssl) \
1396		SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
1397		# define SSL_total_renegotiations(ssl) \
1398		SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
1399		# ifndef OPENSSL_NO_DEPRECATED_3_0
1400		# define SSL_CTX_set_tmp_dh(ctx,dh) \
1401		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1402		# endif
1403		# define SSL_CTX_set_dh_auto(ctx, onoff) \
1404		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1405		# define SSL_set_dh_auto(s, onoff) \
1406		SSL_ctrl(s,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1407		# ifndef OPENSSL_NO_DEPRECATED_3_0
1408		# define SSL_set_tmp_dh(ssl,dh) \
1409		SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1410		# endif
1411		# ifndef OPENSSL_NO_DEPRECATED_3_0
1412		# define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
1413		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1414		# define SSL_set_tmp_ecdh(ssl,ecdh) \
1415		SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1416		# endif
1417		# define SSL_CTX_add_extra_chain_cert(ctx,x509) \
1418		SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)(x509))
1419		# define SSL_CTX_get_extra_chain_certs(ctx,px509) \
1420		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
1421		# define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
1422		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
1423		# define SSL_CTX_clear_extra_chain_certs(ctx) \
1424		SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
1425		# define SSL_CTX_set0_chain(ctx,sk) \
1426		SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1427		# define SSL_CTX_set1_chain(ctx,sk) \
1428		SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1429		# define SSL_CTX_add0_chain_cert(ctx,x509) \
1430		SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1431		# define SSL_CTX_add1_chain_cert(ctx,x509) \
1432		SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1433		# define SSL_CTX_get0_chain_certs(ctx,px509) \
1434		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1435		# define SSL_CTX_clear_chain_certs(ctx) \
1436		SSL_CTX_set0_chain(ctx,NULL)
1437		# define SSL_CTX_build_cert_chain(ctx, flags) \
1438		SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1439		# define SSL_CTX_select_current_cert(ctx,x509) \
1440		SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1441		# define SSL_CTX_set_current_cert(ctx, op) \
1442		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1443		# define SSL_CTX_set0_verify_cert_store(ctx,st) \
1444		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1445		# define SSL_CTX_set1_verify_cert_store(ctx,st) \
1446		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1447		# define SSL_CTX_get0_verify_cert_store(ctx,st) \
1448		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
1449		# define SSL_CTX_set0_chain_cert_store(ctx,st) \
1450		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1451		# define SSL_CTX_set1_chain_cert_store(ctx,st) \
1452		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1453		# define SSL_CTX_get0_chain_cert_store(ctx,st) \
1454		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
1455		# define SSL_set0_chain(s,sk) \
1456		SSL_ctrl(s,SSL_CTRL_CHAIN,0,(char *)(sk))
1457		# define SSL_set1_chain(s,sk) \
1458		SSL_ctrl(s,SSL_CTRL_CHAIN,1,(char *)(sk))
1459		# define SSL_add0_chain_cert(s,x509) \
1460		SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1461		# define SSL_add1_chain_cert(s,x509) \
1462		SSL_ctrl(s,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1463		# define SSL_get0_chain_certs(s,px509) \
1464		SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1465		# define SSL_clear_chain_certs(s) \
1466		SSL_set0_chain(s,NULL)
1467		# define SSL_build_cert_chain(s, flags) \
1468		SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1469		# define SSL_select_current_cert(s,x509) \
1470		SSL_ctrl(s,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1471		# define SSL_set_current_cert(s,op) \
1472		SSL_ctrl(s,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1473		# define SSL_set0_verify_cert_store(s,st) \
1474		SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1475		# define SSL_set1_verify_cert_store(s,st) \
1476		SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1477		#define SSL_get0_verify_cert_store(s,st) \
1478		SSL_ctrl(s,SSL_CTRL_GET_VERIFY_CERT_STORE,0,(char *)(st))
1479		# define SSL_set0_chain_cert_store(s,st) \
1480		SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1481		# define SSL_set1_chain_cert_store(s,st) \
1482		SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1483		#define SSL_get0_chain_cert_store(s,st) \
1484		SSL_ctrl(s,SSL_CTRL_GET_CHAIN_CERT_STORE,0,(char *)(st))
1485
1486		# define SSL_get1_groups(s, glist) \
1487		SSL_ctrl(s,SSL_CTRL_GET_GROUPS,0,(int*)(glist))
1488		# define SSL_CTX_set1_groups(ctx, glist, glistlen) \
1489		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(int *)(glist))
1490		# define SSL_CTX_set1_groups_list(ctx, s) \
1491		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1492		# define SSL_set1_groups(s, glist, glistlen) \
1493		SSL_ctrl(s,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1494		# define SSL_set1_groups_list(s, str) \
1495		SSL_ctrl(s,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(str))
1496		# define SSL_get_shared_group(s, n) \
1497		SSL_ctrl(s,SSL_CTRL_GET_SHARED_GROUP,n,NULL)
1498		# define SSL_get_negotiated_group(s) \
1499		SSL_ctrl(s,SSL_CTRL_GET_NEGOTIATED_GROUP,0,NULL)
1500		# define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
1501		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1502		# define SSL_CTX_set1_sigalgs_list(ctx, s) \
1503		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1504		# define SSL_set1_sigalgs(s, slist, slistlen) \
1505		SSL_ctrl(s,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1506		# define SSL_set1_sigalgs_list(s, str) \
1507		SSL_ctrl(s,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(str))
1508		# define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
1509		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1510		# define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
1511		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1512		# define SSL_set1_client_sigalgs(s, slist, slistlen) \
1513		SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1514		# define SSL_set1_client_sigalgs_list(s, str) \
1515		SSL_ctrl(s,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(str))
1516		# define SSL_get0_certificate_types(s, clist) \
1517		SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
1518		# define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
1519		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen, \
1520		(char *)(clist))
1521		# define SSL_set1_client_certificate_types(s, clist, clistlen) \
1522		SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)(clist))
1523		# define SSL_get_signature_nid(s, pn) \
1524		SSL_ctrl(s,SSL_CTRL_GET_SIGNATURE_NID,0,pn)
1525		# define SSL_get_peer_signature_nid(s, pn) \
1526		SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
1527		# define SSL_get_peer_tmp_key(s, pk) \
1528		SSL_ctrl(s,SSL_CTRL_GET_PEER_TMP_KEY,0,pk)
1529		# define SSL_get_tmp_key(s, pk) \
1530		SSL_ctrl(s,SSL_CTRL_GET_TMP_KEY,0,pk)
1531		# define SSL_get0_raw_cipherlist(s, plst) \
1532		SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)
1533		# define SSL_get0_ec_point_formats(s, plst) \
1534		SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)
1535		# define SSL_CTX_set_min_proto_version(ctx, version) \
1536		SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1537		# define SSL_CTX_set_max_proto_version(ctx, version) \
1538		SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1539		# define SSL_CTX_get_min_proto_version(ctx) \
1540		SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1541		# define SSL_CTX_get_max_proto_version(ctx) \
1542		SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1543		# define SSL_set_min_proto_version(s, version) \
1544		SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1545		# define SSL_set_max_proto_version(s, version) \
1546		SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1547		# define SSL_get_min_proto_version(s) \
1548		SSL_ctrl(s, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1549		# define SSL_get_max_proto_version(s) \
1550		SSL_ctrl(s, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1551
1552		const char SSL_group_to_name(SSL s, int id);
1553
1554		/* Backwards compatibility, original 1.1.0 names */
1555		# define SSL_CTRL_GET_SERVER_TMP_KEY \
1556		SSL_CTRL_GET_PEER_TMP_KEY
1557		# define SSL_get_server_tmp_key(s, pk) \
1558		SSL_get_peer_tmp_key(s, pk)
1559
1560		int SSL_set0_tmp_dh_pkey(SSL s, EVP_PKEY dhpkey);
1561		int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX ctx, EVP_PKEY dhpkey);
1562
1563		/*
1564		* The following symbol names are old and obsolete. They are kept
1565		* for compatibility reasons only and should not be used anymore.
1566		*/
1567		# define SSL_CTRL_GET_CURVES SSL_CTRL_GET_GROUPS
1568		# define SSL_CTRL_SET_CURVES SSL_CTRL_SET_GROUPS
1569		# define SSL_CTRL_SET_CURVES_LIST SSL_CTRL_SET_GROUPS_LIST
1570		# define SSL_CTRL_GET_SHARED_CURVE SSL_CTRL_GET_SHARED_GROUP
1571
1572		# define SSL_get1_curves SSL_get1_groups
1573		# define SSL_CTX_set1_curves SSL_CTX_set1_groups
1574		# define SSL_CTX_set1_curves_list SSL_CTX_set1_groups_list
1575		# define SSL_set1_curves SSL_set1_groups
1576		# define SSL_set1_curves_list SSL_set1_groups_list
1577		# define SSL_get_shared_curve SSL_get_shared_group
1578
1579
1580		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
1581		/* Provide some compatibility macros for removed functionality. */
1582		# define SSL_CTX_need_tmp_RSA(ctx) 0
1583		# define SSL_CTX_set_tmp_rsa(ctx,rsa) 1
1584		# define SSL_need_tmp_RSA(ssl) 0
1585		# define SSL_set_tmp_rsa(ssl,rsa) 1
1586		# define SSL_CTX_set_ecdh_auto(dummy, onoff) ((onoff) != 0)
1587		# define SSL_set_ecdh_auto(dummy, onoff) ((onoff) != 0)
1588		/*
1589		* We "pretend" to call the callback to avoid warnings about unused static
1590		* functions.
1591		*/
1592		# define SSL_CTX_set_tmp_rsa_callback(ctx, cb) while(0) (cb)(NULL, 0, 0)
1593		# define SSL_set_tmp_rsa_callback(ssl, cb) while(0) (cb)(NULL, 0, 0)
1594		# endif
1595		__owur const BIO_METHOD *BIO_f_ssl(void);
1596		__owur BIO BIO_new_ssl(SSL_CTX ctx, int client);
1597		__owur BIO BIO_new_ssl_connect(SSL_CTX ctx);
1598		__owur BIO BIO_new_buffer_ssl_connect(SSL_CTX ctx);
1599		__owur int BIO_ssl_copy_session_id(BIO to, BIO from);
1600		void BIO_ssl_shutdown(BIO *ssl_bio);
1601
1602		__owur int SSL_CTX_set_cipher_list(SSL_CTX , const char str);
1603		__owur SSL_CTX SSL_CTX_new(const SSL_METHOD meth);
1604		__owur SSL_CTX SSL_CTX_new_ex(OSSL_LIB_CTX libctx, const char *propq,
1605		const SSL_METHOD *meth);
1606		int SSL_CTX_up_ref(SSL_CTX *ctx);
1607		void SSL_CTX_free(SSL_CTX *);
1608		__owur long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
1609		__owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
1610		__owur X509_STORE SSL_CTX_get_cert_store(const SSL_CTX );
1611		void SSL_CTX_set_cert_store(SSL_CTX , X509_STORE );
1612		void SSL_CTX_set1_cert_store(SSL_CTX , X509_STORE );
1613		__owur int SSL_want(const SSL *s);
1614		__owur int SSL_clear(SSL *s);
1615
1616		void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
1617
1618		__owur const SSL_CIPHER SSL_get_current_cipher(const SSL s);
1619		__owur const SSL_CIPHER SSL_get_pending_cipher(const SSL s);
1620		__owur int SSL_CIPHER_get_bits(const SSL_CIPHER c, int alg_bits);
1621		__owur const char SSL_CIPHER_get_version(const SSL_CIPHER c);
1622		__owur const char SSL_CIPHER_get_name(const SSL_CIPHER c);
1623		__owur const char SSL_CIPHER_standard_name(const SSL_CIPHER c);
1624		__owur const char OPENSSL_cipher_name(const char rfc_name);
1625		__owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
1626		__owur uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c);
1627		__owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
1628		__owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
1629		__owur const EVP_MD SSL_CIPHER_get_handshake_digest(const SSL_CIPHER c);
1630		__owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
1631
1632		__owur int SSL_get_fd(const SSL *s);
1633		__owur int SSL_get_rfd(const SSL *s);
1634		__owur int SSL_get_wfd(const SSL *s);
1635		__owur const char SSL_get_cipher_list(const SSL s, int n);
1636		__owur char SSL_get_shared_ciphers(const SSL s, char *buf, int size);
1637		__owur int SSL_get_read_ahead(const SSL *s);
1638		__owur int SSL_pending(const SSL *s);
1639		__owur int SSL_has_pending(const SSL *s);
1640		# ifndef OPENSSL_NO_SOCK
1641		__owur int SSL_set_fd(SSL *s, int fd);
1642		__owur int SSL_set_rfd(SSL *s, int fd);
1643		__owur int SSL_set_wfd(SSL *s, int fd);
1644		# endif
1645		void SSL_set0_rbio(SSL s, BIO rbio);
1646		void SSL_set0_wbio(SSL s, BIO wbio);
1647		void SSL_set_bio(SSL s, BIO rbio, BIO *wbio);
1648		__owur BIO SSL_get_rbio(const SSL s);
1649		__owur BIO SSL_get_wbio(const SSL s);
1650		__owur int SSL_set_cipher_list(SSL s, const char str);
1651		__owur int SSL_CTX_set_ciphersuites(SSL_CTX ctx, const char str);
1652		__owur int SSL_set_ciphersuites(SSL s, const char str);
1653		void SSL_set_read_ahead(SSL *s, int yes);
1654		__owur int SSL_get_verify_mode(const SSL *s);
1655		__owur int SSL_get_verify_depth(const SSL *s);
1656		__owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
1657		void SSL_set_verify(SSL *s, int mode, SSL_verify_cb callback);
1658		void SSL_set_verify_depth(SSL *s, int depth);
1659		void SSL_set_cert_cb(SSL s, int (cb) (SSL ssl, void arg), void *arg);
1660		# ifndef OPENSSL_NO_DEPRECATED_3_0
1661		OSSL_DEPRECATEDIN_3_0 __owur int SSL_use_RSAPrivateKey(SSL ssl, RSA rsa);
1662		OSSL_DEPRECATEDIN_3_0
1663		__owur int SSL_use_RSAPrivateKey_ASN1(SSL *ssl,
1664		const unsigned char *d, long len);
1665		# endif
1666		__owur int SSL_use_PrivateKey(SSL ssl, EVP_PKEY pkey);
1667		__owur int SSL_use_PrivateKey_ASN1(int pk, SSL ssl, const unsigned char d,
1668		long len);
1669		__owur int SSL_use_certificate(SSL ssl, X509 x);
1670		__owur int SSL_use_certificate_ASN1(SSL ssl, const unsigned char d, int len);
1671		__owur int SSL_use_cert_and_key(SSL ssl, X509 x509, EVP_PKEY *privatekey,
1672		STACK_OF(X509) *chain, int override);
1673
1674
1675		/* serverinfo file format versions */
1676		# define SSL_SERVERINFOV1 1
1677		# define SSL_SERVERINFOV2 2
1678
1679		/* Set serverinfo data for the current active cert. */
1680		__owur int SSL_CTX_use_serverinfo(SSL_CTX ctx, const unsigned char serverinfo,
1681		size_t serverinfo_length);
1682		__owur int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
1683		const unsigned char *serverinfo,
1684		size_t serverinfo_length);
1685		__owur int SSL_CTX_use_serverinfo_file(SSL_CTX ctx, const char file);
1686
1687		#ifndef OPENSSL_NO_DEPRECATED_3_0
1688		OSSL_DEPRECATEDIN_3_0
1689		__owur int SSL_use_RSAPrivateKey_file(SSL ssl, const char file, int type);
1690		#endif
1691
1692		__owur int SSL_use_PrivateKey_file(SSL ssl, const char file, int type);
1693		__owur int SSL_use_certificate_file(SSL ssl, const char file, int type);
1694
1695		#ifndef OPENSSL_NO_DEPRECATED_3_0
1696		OSSL_DEPRECATEDIN_3_0
1697		__owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX ctx, const char file,
1698		int type);
1699		#endif
1700		__owur int SSL_CTX_use_PrivateKey_file(SSL_CTX ctx, const char file,
1701		int type);
1702		__owur int SSL_CTX_use_certificate_file(SSL_CTX ctx, const char file,
1703		int type);
1704		/* PEM type */
1705		__owur int SSL_CTX_use_certificate_chain_file(SSL_CTX ctx, const char file);
1706		__owur int SSL_use_certificate_chain_file(SSL ssl, const char file);
1707		__owur STACK_OF(X509_NAME) SSL_load_client_CA_file(const char file);
1708		__owur STACK_OF(X509_NAME)
1709		SSL_load_client_CA_file_ex(const char file, OSSL_LIB_CTX *libctx,
1710		const char *propq);
1711		__owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1712		const char *file);
1713		int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1714		const char *dir);
1715		int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1716		const char *uri);
1717
1718		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
1719		# define SSL_load_error_strings() \
1720		OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
1721		\| OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
1722		# endif
1723
1724		__owur const char SSL_state_string(const SSL s);
1725		__owur const char SSL_rstate_string(const SSL s);
1726		__owur const char SSL_state_string_long(const SSL s);
1727		__owur const char SSL_rstate_string_long(const SSL s);
1728		__owur long SSL_SESSION_get_time(const SSL_SESSION *s);
1729		__owur long SSL_SESSION_set_time(SSL_SESSION *s, long t);
1730		__owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
1731		__owur long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
1732		__owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
1733		__owur int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
1734
1735		__owur const char SSL_SESSION_get0_hostname(const SSL_SESSION s);
1736		__owur int SSL_SESSION_set1_hostname(SSL_SESSION s, const char hostname);
1737		void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
1738		const unsigned char **alpn,
1739		size_t *len);
1740		__owur int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s,
1741		const unsigned char *alpn,
1742		size_t len);
1743		__owur const SSL_CIPHER SSL_SESSION_get0_cipher(const SSL_SESSION s);
1744		__owur int SSL_SESSION_set_cipher(SSL_SESSION s, const SSL_CIPHER cipher);
1745		__owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
1746		__owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
1747		void SSL_SESSION_get0_ticket(const SSL_SESSION s, const unsigned char *tick,
1748		size_t *len);
1749		__owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
1750		__owur int SSL_SESSION_set_max_early_data(SSL_SESSION *s,
1751		uint32_t max_early_data);
1752		__owur int SSL_copy_session_id(SSL to, const SSL from);
1753		__owur X509 SSL_SESSION_get0_peer(SSL_SESSION s);
1754		__owur int SSL_SESSION_set1_id_context(SSL_SESSION *s,
1755		const unsigned char *sid_ctx,
1756		unsigned int sid_ctx_len);
1757		__owur int SSL_SESSION_set1_id(SSL_SESSION s, const unsigned char sid,
1758		unsigned int sid_len);
1759		__owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
1760
1761		__owur SSL_SESSION *SSL_SESSION_new(void);
1762		__owur SSL_SESSION SSL_SESSION_dup(const SSL_SESSION src);
1763		const unsigned char SSL_SESSION_get_id(const SSL_SESSION s,
1764		unsigned int *len);
1765		const unsigned char SSL_SESSION_get0_id_context(const SSL_SESSION s,
1766		unsigned int *len);
1767		__owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
1768		# ifndef OPENSSL_NO_STDIO
1769		int SSL_SESSION_print_fp(FILE fp, const SSL_SESSION ses);
1770		# endif
1771		int SSL_SESSION_print(BIO fp, const SSL_SESSION ses);
1772		int SSL_SESSION_print_keylog(BIO bp, const SSL_SESSION x);
1773		int SSL_SESSION_up_ref(SSL_SESSION *ses);
1774		void SSL_SESSION_free(SSL_SESSION *ses);
1775		__owur int i2d_SSL_SESSION(const SSL_SESSION in, unsigned char *pp);
1776		__owur int SSL_set_session(SSL to, SSL_SESSION session);
1777		int SSL_CTX_add_session(SSL_CTX ctx, SSL_SESSION session);
1778		int SSL_CTX_remove_session(SSL_CTX ctx, SSL_SESSION session);
1779		__owur int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb);
1780		__owur int SSL_set_generate_session_id(SSL *s, GEN_SESSION_CB cb);
1781		__owur int SSL_has_matching_session_id(const SSL *s,
1782		const unsigned char *id,
1783		unsigned int id_len);
1784		SSL_SESSION d2i_SSL_SESSION(SSL_SESSION a, const unsigned char *pp,
1785		long length);
1786
1787		# ifdef OPENSSL_X509_H
1788		__owur X509 SSL_get0_peer_certificate(const SSL s);
1789		__owur X509 SSL_get1_peer_certificate(const SSL s);
1790		/* Deprecated in 3.0.0 */
1791		# ifndef OPENSSL_NO_DEPRECATED_3_0
1792		# define SSL_get_peer_certificate SSL_get1_peer_certificate
1793		# endif
1794		# endif
1795
1796		__owur STACK_OF(X509) SSL_get_peer_cert_chain(const SSL s);
1797
1798		__owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
1799		__owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
1800		__owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
1801		void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, SSL_verify_cb callback);
1802		void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
1803		void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1804		int (cb) (X509_STORE_CTX , void *),
1805		void *arg);
1806		void SSL_CTX_set_cert_cb(SSL_CTX c, int (cb) (SSL ssl, void arg),
1807		void *arg);
1808		# ifndef OPENSSL_NO_DEPRECATED_3_0
1809		OSSL_DEPRECATEDIN_3_0
1810		__owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX ctx, RSA rsa);
1811		OSSL_DEPRECATEDIN_3_0
1812		__owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX ctx, const unsigned char d,
1813		long len);
1814		# endif
1815		__owur int SSL_CTX_use_PrivateKey(SSL_CTX ctx, EVP_PKEY pkey);
1816		__owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
1817		const unsigned char *d, long len);
1818		__owur int SSL_CTX_use_certificate(SSL_CTX ctx, X509 x);
1819		__owur int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
1820		const unsigned char *d);
1821		__owur int SSL_CTX_use_cert_and_key(SSL_CTX ctx, X509 x509, EVP_PKEY *privatekey,
1822		STACK_OF(X509) *chain, int override);
1823
1824		void SSL_CTX_set_default_passwd_cb(SSL_CTX ctx, pem_password_cb cb);
1825		void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX ctx, void u);
1826		pem_password_cb SSL_CTX_get_default_passwd_cb(SSL_CTX ctx);
1827		void SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX ctx);
1828		void SSL_set_default_passwd_cb(SSL s, pem_password_cb cb);
1829		void SSL_set_default_passwd_cb_userdata(SSL s, void u);
1830		pem_password_cb SSL_get_default_passwd_cb(SSL s);
1831		void SSL_get_default_passwd_cb_userdata(SSL s);
1832
1833		__owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
1834		__owur int SSL_check_private_key(const SSL *ctx);
1835
1836		__owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
1837		const unsigned char *sid_ctx,
1838		unsigned int sid_ctx_len);
1839
1840		SSL SSL_new(SSL_CTX ctx);
1841		int SSL_up_ref(SSL *s);
1842		int SSL_is_dtls(const SSL *s);
1843		__owur int SSL_set_session_id_context(SSL ssl, const unsigned char sid_ctx,
1844		unsigned int sid_ctx_len);
1845
1846		__owur int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
1847		__owur int SSL_set_purpose(SSL *ssl, int purpose);
1848		__owur int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
1849		__owur int SSL_set_trust(SSL *ssl, int trust);
1850
1851		__owur int SSL_set1_host(SSL s, const char hostname);
1852		__owur int SSL_add1_host(SSL s, const char hostname);
1853		__owur const char SSL_get0_peername(SSL s);
1854		void SSL_set_hostflags(SSL *s, unsigned int flags);
1855
1856		__owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
1857		__owur int SSL_CTX_dane_mtype_set(SSL_CTX ctx, const EVP_MD md,
1858		uint8_t mtype, uint8_t ord);
1859		__owur int SSL_dane_enable(SSL s, const char basedomain);
1860		__owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1861		uint8_t mtype, const unsigned char *data, size_t dlen);
1862		__owur int SSL_get0_dane_authority(SSL s, X509 mcert, EVP_PKEY *mspki);
1863		__owur int SSL_get0_dane_tlsa(SSL s, uint8_t usage, uint8_t *selector,
1864		uint8_t mtype, const unsigned char *data,
1865		size_t *dlen);
1866		/*
1867		* Bridge opacity barrier between libcrypt and libssl, also needed to support
1868		* offline testing in test/danetest.c
1869		*/
1870		SSL_DANE SSL_get0_dane(SSL ssl);
1871		/*
1872		* DANE flags
1873		*/
1874		unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags);
1875		unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags);
1876		unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags);
1877		unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags);
1878
1879		__owur int SSL_CTX_set1_param(SSL_CTX ctx, X509_VERIFY_PARAM vpm);
1880		__owur int SSL_set1_param(SSL ssl, X509_VERIFY_PARAM vpm);
1881
1882		__owur X509_VERIFY_PARAM SSL_CTX_get0_param(SSL_CTX ctx);
1883		__owur X509_VERIFY_PARAM SSL_get0_param(SSL ssl);
1884
1885		# ifndef OPENSSL_NO_SRP
1886		# ifndef OPENSSL_NO_DEPRECATED_3_0
1887		OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_username(SSL_CTX ctx, char name);
1888		OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_password(SSL_CTX ctx, char password);
1889		OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
1890		OSSL_DEPRECATEDIN_3_0
1891		int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
1892		char (cb) (SSL , void ));
1893		OSSL_DEPRECATEDIN_3_0
1894		int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
1895		int (cb) (SSL , void *));
1896		OSSL_DEPRECATEDIN_3_0
1897		int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
1898		int (cb) (SSL , int , void ));
1899		OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_cb_arg(SSL_CTX ctx, void arg);
1900
1901		OSSL_DEPRECATEDIN_3_0
1902		int SSL_set_srp_server_param(SSL s, const BIGNUM N, const BIGNUM *g,
1903		BIGNUM sa, BIGNUM v, char *info);
1904		OSSL_DEPRECATEDIN_3_0
1905		int SSL_set_srp_server_param_pw(SSL s, const char user, const char *pass,
1906		const char *grp);
1907
1908		OSSL_DEPRECATEDIN_3_0 __owur BIGNUM SSL_get_srp_g(SSL s);
1909		OSSL_DEPRECATEDIN_3_0 __owur BIGNUM SSL_get_srp_N(SSL s);
1910
1911		OSSL_DEPRECATEDIN_3_0 __owur char SSL_get_srp_username(SSL s);
1912		OSSL_DEPRECATEDIN_3_0 __owur char SSL_get_srp_userinfo(SSL s);
1913		# endif
1914		# endif
1915
1916		/*
1917		* ClientHello callback and helpers.
1918		*/
1919
1920		# define SSL_CLIENT_HELLO_SUCCESS 1
1921		# define SSL_CLIENT_HELLO_ERROR 0
1922		# define SSL_CLIENT_HELLO_RETRY (-1)
1923
1924		typedef int (SSL_client_hello_cb_fn) (SSL s, int al, void arg);
1925		void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
1926		void *arg);
1927		int SSL_client_hello_isv2(SSL *s);
1928		unsigned int SSL_client_hello_get0_legacy_version(SSL *s);
1929		size_t SSL_client_hello_get0_random(SSL s, const unsigned char *out);
1930		size_t SSL_client_hello_get0_session_id(SSL s, const unsigned char *out);
1931		size_t SSL_client_hello_get0_ciphers(SSL s, const unsigned char *out);
1932		size_t SSL_client_hello_get0_compression_methods(SSL *s,
1933		const unsigned char **out);
1934		int SSL_client_hello_get1_extensions_present(SSL s, int out, size_t outlen);
1935		int SSL_client_hello_get0_ext(SSL *s, unsigned int type,
1936		const unsigned char *out, size_t outlen);
1937
1938		void SSL_certs_clear(SSL *s);
1939		void SSL_free(SSL *ssl);
1940		# ifdef OSSL_ASYNC_FD
1941		/*
1942		* Windows application developer has to include windows.h to use these.
1943		*/
1944		__owur int SSL_waiting_for_async(SSL *s);
1945		__owur int SSL_get_all_async_fds(SSL s, OSSL_ASYNC_FD fds, size_t *numfds);
1946		__owur int SSL_get_changed_async_fds(SSL s, OSSL_ASYNC_FD addfd,
1947		size_t numaddfds, OSSL_ASYNC_FD delfd,
1948		size_t *numdelfds);
1949		__owur int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback);
1950		__owur int SSL_CTX_set_async_callback_arg(SSL_CTX ctx, void arg);
1951		__owur int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback);
1952		__owur int SSL_set_async_callback_arg(SSL s, void arg);
1953		__owur int SSL_get_async_status(SSL s, int status);
1954
1955		# endif
1956		__owur int SSL_accept(SSL *ssl);
1957		__owur int SSL_stateless(SSL *s);
1958		__owur int SSL_connect(SSL *ssl);
1959		__owur int SSL_read(SSL ssl, void buf, int num);
1960		__owur int SSL_read_ex(SSL ssl, void buf, size_t num, size_t *readbytes);
1961
1962		# define SSL_READ_EARLY_DATA_ERROR 0
1963		# define SSL_READ_EARLY_DATA_SUCCESS 1
1964		# define SSL_READ_EARLY_DATA_FINISH 2
1965
1966		__owur int SSL_read_early_data(SSL s, void buf, size_t num,
1967		size_t *readbytes);
1968		__owur int SSL_peek(SSL ssl, void buf, int num);
1969		__owur int SSL_peek_ex(SSL ssl, void buf, size_t num, size_t *readbytes);
1970		__owur ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size,
1971		int flags);
1972		__owur int SSL_write(SSL ssl, const void buf, int num);
1973		__owur int SSL_write_ex(SSL s, const void buf, size_t num, size_t *written);
1974		__owur int SSL_write_early_data(SSL s, const void buf, size_t num,
1975		size_t *written);
1976		long SSL_ctrl(SSL ssl, int cmd, long larg, void parg);
1977		long SSL_callback_ctrl(SSL , int, void ()(void));
1978		long SSL_CTX_ctrl(SSL_CTX ctx, int cmd, long larg, void parg);
1979		long SSL_CTX_callback_ctrl(SSL_CTX , int, void ()(void));
1980
1981		# define SSL_EARLY_DATA_NOT_SENT 0
1982		# define SSL_EARLY_DATA_REJECTED 1
1983		# define SSL_EARLY_DATA_ACCEPTED 2
1984
1985		__owur int SSL_get_early_data_status(const SSL *s);
1986
1987		__owur int SSL_get_error(const SSL *s, int ret_code);
1988		__owur const char SSL_get_version(const SSL s);
1989
1990		/* This sets the 'default' SSL version that SSL_new() will create */
1991		# ifndef OPENSSL_NO_DEPRECATED_3_0
1992		OSSL_DEPRECATEDIN_3_0
1993		__owur int SSL_CTX_set_ssl_version(SSL_CTX ctx, const SSL_METHOD meth);
1994		# endif
1995
1996		# ifndef OPENSSL_NO_SSL3_METHOD
1997		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
1998		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD SSLv3_method(void); / SSLv3 */
1999		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_server_method(void);
2000		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_client_method(void);
2001		# endif
2002		# endif
2003
2004		#define SSLv23_method TLS_method
2005		#define SSLv23_server_method TLS_server_method
2006		#define SSLv23_client_method TLS_client_method
2007
2008		/* Negotiate highest available SSL/TLS version */
2009		__owur const SSL_METHOD *TLS_method(void);
2010		__owur const SSL_METHOD *TLS_server_method(void);
2011		__owur const SSL_METHOD *TLS_client_method(void);
2012
2013		# ifndef OPENSSL_NO_TLS1_METHOD
2014		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2015		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD TLSv1_method(void); / TLSv1.0 */
2016		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_server_method(void);
2017		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_client_method(void);
2018		# endif
2019		# endif
2020
2021		# ifndef OPENSSL_NO_TLS1_1_METHOD
2022		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2023		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD TLSv1_1_method(void); / TLSv1.1 */
2024		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_server_method(void);
2025		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_client_method(void);
2026		# endif
2027		# endif
2028
2029		# ifndef OPENSSL_NO_TLS1_2_METHOD
2030		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2031		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD TLSv1_2_method(void); / TLSv1.2 */
2032		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_server_method(void);
2033		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_client_method(void);
2034		# endif
2035		# endif
2036
2037		# ifndef OPENSSL_NO_DTLS1_METHOD
2038		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2039		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD DTLSv1_method(void); / DTLSv1.0 */
2040		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_server_method(void);
2041		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_client_method(void);
2042		# endif
2043		# endif
2044
2045		# ifndef OPENSSL_NO_DTLS1_2_METHOD
2046		/* DTLSv1.2 */
2047		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2048		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_method(void);
2049		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_server_method(void);
2050		OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_client_method(void);
2051		# endif
2052		# endif
2053
2054		__owur const SSL_METHOD DTLS_method(void); / DTLS 1.0 and 1.2 */
2055		__owur const SSL_METHOD DTLS_server_method(void); / DTLS 1.0 and 1.2 */
2056		__owur const SSL_METHOD DTLS_client_method(void); / DTLS 1.0 and 1.2 */
2057
2058		__owur size_t DTLS_get_data_mtu(const SSL *s);
2059
2060		__owur STACK_OF(SSL_CIPHER) SSL_get_ciphers(const SSL s);
2061		__owur STACK_OF(SSL_CIPHER) SSL_CTX_get_ciphers(const SSL_CTX ctx);
2062		__owur STACK_OF(SSL_CIPHER) SSL_get_client_ciphers(const SSL s);
2063		__owur STACK_OF(SSL_CIPHER) SSL_get1_supported_ciphers(SSL s);
2064
2065		__owur int SSL_do_handshake(SSL *s);
2066		int SSL_key_update(SSL *s, int updatetype);
2067		int SSL_get_key_update_type(const SSL *s);
2068		int SSL_renegotiate(SSL *s);
2069		int SSL_renegotiate_abbreviated(SSL *s);
2070		__owur int SSL_renegotiate_pending(const SSL *s);
2071		int SSL_new_session_ticket(SSL *s);
2072		int SSL_shutdown(SSL *s);
2073		__owur int SSL_verify_client_post_handshake(SSL *s);
2074		void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val);
2075		void SSL_set_post_handshake_auth(SSL *s, int val);
2076
2077		__owur const SSL_METHOD SSL_CTX_get_ssl_method(const SSL_CTX ctx);
2078		__owur const SSL_METHOD SSL_get_ssl_method(const SSL s);
2079		__owur int SSL_set_ssl_method(SSL s, const SSL_METHOD method);
2080		__owur const char *SSL_alert_type_string_long(int value);
2081		__owur const char *SSL_alert_type_string(int value);
2082		__owur const char *SSL_alert_desc_string_long(int value);
2083		__owur const char *SSL_alert_desc_string(int value);
2084
2085		void SSL_set0_CA_list(SSL s, STACK_OF(X509_NAME) name_list);
2086		void SSL_CTX_set0_CA_list(SSL_CTX ctx, STACK_OF(X509_NAME) name_list);
2087		__owur const STACK_OF(X509_NAME) SSL_get0_CA_list(const SSL s);
2088		__owur const STACK_OF(X509_NAME) SSL_CTX_get0_CA_list(const SSL_CTX ctx);
2089		__owur int SSL_add1_to_CA_list(SSL ssl, const X509 x);
2090		__owur int SSL_CTX_add1_to_CA_list(SSL_CTX ctx, const X509 x);
2091		__owur const STACK_OF(X509_NAME) SSL_get0_peer_CA_list(const SSL s);
2092
2093		void SSL_set_client_CA_list(SSL s, STACK_OF(X509_NAME) name_list);
2094		void SSL_CTX_set_client_CA_list(SSL_CTX ctx, STACK_OF(X509_NAME) name_list);
2095		__owur STACK_OF(X509_NAME) SSL_get_client_CA_list(const SSL s);
2096		__owur STACK_OF(X509_NAME) SSL_CTX_get_client_CA_list(const SSL_CTX s);
2097		__owur int SSL_add_client_CA(SSL ssl, X509 x);
2098		__owur int SSL_CTX_add_client_CA(SSL_CTX ctx, X509 x);
2099
2100		void SSL_set_connect_state(SSL *s);
2101		void SSL_set_accept_state(SSL *s);
2102
2103		__owur long SSL_get_default_timeout(const SSL *s);
2104
2105		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2106		# define SSL_library_init() OPENSSL_init_ssl(0, NULL)
2107		# endif
2108
2109		__owur char SSL_CIPHER_description(const SSL_CIPHER , char *buf, int size);
2110		__owur STACK_OF(X509_NAME) SSL_dup_CA_list(const STACK_OF(X509_NAME) sk);
2111
2112		__owur SSL SSL_dup(SSL ssl);
2113
2114		__owur X509 SSL_get_certificate(const SSL ssl);
2115		/*
2116		* EVP_PKEY
2117		*/
2118		struct evp_pkey_st SSL_get_privatekey(const SSL ssl);
2119
2120		__owur X509 SSL_CTX_get0_certificate(const SSL_CTX ctx);
2121		__owur EVP_PKEY SSL_CTX_get0_privatekey(const SSL_CTX ctx);
2122
2123		void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
2124		__owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
2125		void SSL_set_quiet_shutdown(SSL *ssl, int mode);
2126		__owur int SSL_get_quiet_shutdown(const SSL *ssl);
2127		void SSL_set_shutdown(SSL *ssl, int mode);
2128		__owur int SSL_get_shutdown(const SSL *ssl);
2129		__owur int SSL_version(const SSL *ssl);
2130		__owur int SSL_client_version(const SSL *s);
2131		__owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
2132		__owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
2133		__owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
2134		__owur int SSL_CTX_set_default_verify_store(SSL_CTX *ctx);
2135		__owur int SSL_CTX_load_verify_file(SSL_CTX ctx, const char CAfile);
2136		__owur int SSL_CTX_load_verify_dir(SSL_CTX ctx, const char CApath);
2137		__owur int SSL_CTX_load_verify_store(SSL_CTX ctx, const char CAstore);
2138		__owur int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
2139		const char *CAfile,
2140		const char *CApath);
2141		# define SSL_get0_session SSL_get_session/* just peek at pointer */
2142		__owur SSL_SESSION SSL_get_session(const SSL ssl);
2143		__owur SSL_SESSION SSL_get1_session(SSL ssl); /* obtain a reference count */
2144		__owur SSL_CTX SSL_get_SSL_CTX(const SSL ssl);
2145		SSL_CTX SSL_set_SSL_CTX(SSL ssl, SSL_CTX *ctx);
2146		void SSL_set_info_callback(SSL *ssl,
2147		void (cb) (const SSL ssl, int type, int val));
2148		void (SSL_get_info_callback(const SSL ssl)) (const SSL *ssl, int type,
2149		int val);
2150		__owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
2151
2152		void SSL_set_verify_result(SSL *ssl, long v);
2153		__owur long SSL_get_verify_result(const SSL *ssl);
2154		__owur STACK_OF(X509) SSL_get0_verified_chain(const SSL s);
2155
2156		__owur size_t SSL_get_client_random(const SSL ssl, unsigned char out,
2157		size_t outlen);
2158		__owur size_t SSL_get_server_random(const SSL ssl, unsigned char out,
2159		size_t outlen);
2160		__owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *sess,
2161		unsigned char *out, size_t outlen);
2162		__owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
2163		const unsigned char *in, size_t len);
2164		uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *sess);
2165
2166		#define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
2167		CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
2168		__owur int SSL_set_ex_data(SSL ssl, int idx, void data);
2169		void SSL_get_ex_data(const SSL ssl, int idx);
2170		#define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
2171		CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
2172		__owur int SSL_SESSION_set_ex_data(SSL_SESSION ss, int idx, void data);
2173		void SSL_SESSION_get_ex_data(const SSL_SESSION ss, int idx);
2174		#define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
2175		CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
2176		__owur int SSL_CTX_set_ex_data(SSL_CTX ssl, int idx, void data);
2177		void SSL_CTX_get_ex_data(const SSL_CTX ssl, int idx);
2178
2179		__owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
2180
2181		# define SSL_CTX_sess_set_cache_size(ctx,t) \
2182		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
2183		# define SSL_CTX_sess_get_cache_size(ctx) \
2184		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
2185		# define SSL_CTX_set_session_cache_mode(ctx,m) \
2186		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
2187		# define SSL_CTX_get_session_cache_mode(ctx) \
2188		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)
2189
2190		# define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
2191		# define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
2192		# define SSL_CTX_get_read_ahead(ctx) \
2193		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
2194		# define SSL_CTX_set_read_ahead(ctx,m) \
2195		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
2196		# define SSL_CTX_get_max_cert_list(ctx) \
2197		SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2198		# define SSL_CTX_set_max_cert_list(ctx,m) \
2199		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2200		# define SSL_get_max_cert_list(ssl) \
2201		SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2202		# define SSL_set_max_cert_list(ssl,m) \
2203		SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2204
2205		# define SSL_CTX_set_max_send_fragment(ctx,m) \
2206		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2207		# define SSL_set_max_send_fragment(ssl,m) \
2208		SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2209		# define SSL_CTX_set_split_send_fragment(ctx,m) \
2210		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2211		# define SSL_set_split_send_fragment(ssl,m) \
2212		SSL_ctrl(ssl,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2213		# define SSL_CTX_set_max_pipelines(ctx,m) \
2214		SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2215		# define SSL_set_max_pipelines(ssl,m) \
2216		SSL_ctrl(ssl,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2217		# define SSL_set_retry_verify(ssl) \
2218		(SSL_ctrl(ssl,SSL_CTRL_SET_RETRY_VERIFY,0,NULL) > 0)
2219
2220		void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
2221		void SSL_set_default_read_buffer_len(SSL *s, size_t len);
2222
2223		# ifndef OPENSSL_NO_DH
2224		# ifndef OPENSSL_NO_DEPRECATED_3_0
2225		/* NB: the \|keylength\| is only applicable when is_export is true */
2226		OSSL_DEPRECATEDIN_3_0
2227		void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
2228		DH (dh) (SSL *ssl, int is_export,
2229		int keylength));
2230		OSSL_DEPRECATEDIN_3_0
2231		void SSL_set_tmp_dh_callback(SSL *ssl,
2232		DH (dh) (SSL *ssl, int is_export,
2233		int keylength));
2234		# endif
2235		# endif
2236
2237		__owur const COMP_METHOD SSL_get_current_compression(const SSL s);
2238		__owur const COMP_METHOD SSL_get_current_expansion(const SSL s);
2239		__owur const char SSL_COMP_get_name(const COMP_METHOD comp);
2240		__owur const char SSL_COMP_get0_name(const SSL_COMP comp);
2241		__owur int SSL_COMP_get_id(const SSL_COMP *comp);
2242		STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
2243		__owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
2244		*meths);
2245		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2246		# define SSL_COMP_free_compression_methods() while(0) continue
2247		# endif
2248		__owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
2249
2250		const SSL_CIPHER SSL_CIPHER_find(SSL ssl, const unsigned char *ptr);
2251		int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
2252		int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
2253		int SSL_bytes_to_cipher_list(SSL s, const unsigned char bytes, size_t len,
2254		int isv2format, STACK_OF(SSL_CIPHER) **sk,
2255		STACK_OF(SSL_CIPHER) **scsvs);
2256
2257		/* TLS extensions functions */
2258		__owur int SSL_set_session_ticket_ext(SSL s, void ext_data, int ext_len);
2259
2260		__owur int SSL_set_session_ticket_ext_cb(SSL *s,
2261		tls_session_ticket_ext_cb_fn cb,
2262		void *arg);
2263
2264		/* Pre-shared secret session resumption functions */
2265		__owur int SSL_set_session_secret_cb(SSL *s,
2266		tls_session_secret_cb_fn session_secret_cb,
2267		void *arg);
2268
2269		void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
2270		int (cb) (SSL ssl,
2271		int
2272		is_forward_secure));
2273
2274		void SSL_set_not_resumable_session_callback(SSL *ssl,
2275		int (cb) (SSL ssl,
2276		int is_forward_secure));
2277
2278		void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
2279		size_t (cb) (SSL ssl, int type,
2280		size_t len, void *arg));
2281		void SSL_CTX_set_record_padding_callback_arg(SSL_CTX ctx, void arg);
2282		void SSL_CTX_get_record_padding_callback_arg(const SSL_CTX ctx);
2283		int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
2284
2285		int SSL_set_record_padding_callback(SSL *ssl,
2286		size_t (cb) (SSL ssl, int type,
2287		size_t len, void *arg));
2288		void SSL_set_record_padding_callback_arg(SSL ssl, void arg);
2289		void SSL_get_record_padding_callback_arg(const SSL ssl);
2290		int SSL_set_block_padding(SSL *ssl, size_t block_size);
2291
2292		int SSL_set_num_tickets(SSL *s, size_t num_tickets);
2293		size_t SSL_get_num_tickets(const SSL *s);
2294		int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
2295		size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx);
2296
2297		# ifndef OPENSSL_NO_DEPRECATED_1_1_0
2298		# define SSL_cache_hit(s) SSL_session_reused(s)
2299		# endif
2300
2301		__owur int SSL_session_reused(const SSL *s);
2302		__owur int SSL_is_server(const SSL *s);
2303
2304		__owur __owur SSL_CONF_CTX *SSL_CONF_CTX_new(void);
2305		int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
2306		void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
2307		unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
2308		__owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx,
2309		unsigned int flags);
2310		__owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX cctx, const char pre);
2311
2312		void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX cctx, SSL ssl);
2313		void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX cctx, SSL_CTX ctx);
2314
2315		__owur int SSL_CONF_cmd(SSL_CONF_CTX cctx, const char cmd, const char *value);
2316		__owur int SSL_CONF_cmd_argv(SSL_CONF_CTX cctx, int pargc, char ***pargv);
2317		__owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX cctx, const char cmd);
2318
2319		void SSL_add_ssl_module(void);
2320		int SSL_config(SSL s, const char name);
2321		int SSL_CTX_config(SSL_CTX ctx, const char name);
2322
2323		# ifndef OPENSSL_NO_SSL_TRACE
2324		void SSL_trace(int write_p, int version, int content_type,
2325		const void buf, size_t len, SSL ssl, void *arg);
2326		# endif
2327
2328		# ifndef OPENSSL_NO_SOCK
2329		int DTLSv1_listen(SSL s, BIO_ADDR client);
2330		# endif
2331
2332		# ifndef OPENSSL_NO_CT
2333
2334		/*
2335		* A callback for verifying that the received SCTs are sufficient.
2336		* Expected to return 1 if they are sufficient, otherwise 0.
2337		* May return a negative integer if an error occurs.
2338		* A connection should be aborted if the SCTs are deemed insufficient.
2339		*/
2340		typedef int (ssl_ct_validation_cb)(const CT_POLICY_EVAL_CTX ctx,
2341		const STACK_OF(SCT) scts, void arg);
2342
2343		/*
2344		* Sets a \|callback\| that is invoked upon receipt of ServerHelloDone to validate
2345		* the received SCTs.
2346		* If the callback returns a non-positive result, the connection is terminated.
2347		* Call this function before beginning a handshake.
2348		* If a NULL \|callback\| is provided, SCT validation is disabled.
2349		* \|arg\| is arbitrary userdata that will be passed to the callback whenever it
2350		* is invoked. Ownership of \|arg\| remains with the caller.
2351		*
2352		* NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
2353		* will be requested.
2354		*/
2355		int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
2356		void *arg);
2357		int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
2358		ssl_ct_validation_cb callback,
2359		void *arg);
2360		#define SSL_disable_ct(s) \
2361		((void) SSL_set_validation_callback((s), NULL, NULL))
2362		#define SSL_CTX_disable_ct(ctx) \
2363		((void) SSL_CTX_set_validation_callback((ctx), NULL, NULL))
2364
2365		/*
2366		* The validation type enumerates the available behaviours of the built-in SSL
2367		* CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
2368		* The underlying callback is a static function in libssl.
2369		*/
2370		enum {
2371		SSL_CT_VALIDATION_PERMISSIVE = 0,
2372		SSL_CT_VALIDATION_STRICT
2373		};
2374
2375		/*
2376		* Enable CT by setting up a callback that implements one of the built-in
2377		* validation variants. The SSL_CT_VALIDATION_PERMISSIVE variant always
2378		* continues the handshake, the application can make appropriate decisions at
2379		* handshake completion. The SSL_CT_VALIDATION_STRICT variant requires at
2380		* least one valid SCT, or else handshake termination will be requested. The
2381		* handshake may continue anyway if SSL_VERIFY_NONE is in effect.
2382		*/
2383		int SSL_enable_ct(SSL *s, int validation_mode);
2384		int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode);
2385
2386		/*
2387		* Report whether a non-NULL callback is enabled.
2388		*/
2389		int SSL_ct_is_enabled(const SSL *s);
2390		int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
2391
2392		/* Gets the SCTs received from a connection */
2393		const STACK_OF(SCT) SSL_get0_peer_scts(SSL s);
2394
2395		/*
2396		* Loads the CT log list from the default location.
2397		* If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2398		* the log information loaded from this file will be appended to the
2399		* CTLOG_STORE.
2400		* Returns 1 on success, 0 otherwise.
2401		*/
2402		int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
2403
2404		/*
2405		* Loads the CT log list from the specified file path.
2406		* If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2407		* the log information loaded from this file will be appended to the
2408		* CTLOG_STORE.
2409		* Returns 1 on success, 0 otherwise.
2410		*/
2411		int SSL_CTX_set_ctlog_list_file(SSL_CTX ctx, const char path);
2412
2413		/*
2414		* Sets the CT log list used by all SSL connections created from this SSL_CTX.
2415		* Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
2416		*/
2417		void SSL_CTX_set0_ctlog_store(SSL_CTX ctx, CTLOG_STORE logs);
2418
2419		/*
2420		* Gets the CT log list used by all SSL connections created from this SSL_CTX.
2421		* This will be NULL unless one of the following functions has been called:
2422		* - SSL_CTX_set_default_ctlog_list_file
2423		* - SSL_CTX_set_ctlog_list_file
2424		* - SSL_CTX_set_ctlog_store
2425		*/
2426		const CTLOG_STORE SSL_CTX_get0_ctlog_store(const SSL_CTX ctx);
2427
2428		# endif /* OPENSSL_NO_CT */
2429
2430		/* What the "other" parameter contains in security callback */
2431		/* Mask for type */
2432		# define SSL_SECOP_OTHER_TYPE 0xffff0000
2433		# define SSL_SECOP_OTHER_NONE 0
2434		# define SSL_SECOP_OTHER_CIPHER (1 << 16)
2435		# define SSL_SECOP_OTHER_CURVE (2 << 16)
2436		# define SSL_SECOP_OTHER_DH (3 << 16)
2437		# define SSL_SECOP_OTHER_PKEY (4 << 16)
2438		# define SSL_SECOP_OTHER_SIGALG (5 << 16)
2439		# define SSL_SECOP_OTHER_CERT (6 << 16)
2440
2441		/* Indicated operation refers to peer key or certificate */
2442		# define SSL_SECOP_PEER 0x1000
2443
2444		/* Values for "op" parameter in security callback */
2445
2446		/* Called to filter ciphers */
2447		/* Ciphers client supports */
2448		# define SSL_SECOP_CIPHER_SUPPORTED (1 \| SSL_SECOP_OTHER_CIPHER)
2449		/* Cipher shared by client/server */
2450		# define SSL_SECOP_CIPHER_SHARED (2 \| SSL_SECOP_OTHER_CIPHER)
2451		/* Sanity check of cipher server selects */
2452		# define SSL_SECOP_CIPHER_CHECK (3 \| SSL_SECOP_OTHER_CIPHER)
2453		/* Curves supported by client */
2454		# define SSL_SECOP_CURVE_SUPPORTED (4 \| SSL_SECOP_OTHER_CURVE)
2455		/* Curves shared by client/server */
2456		# define SSL_SECOP_CURVE_SHARED (5 \| SSL_SECOP_OTHER_CURVE)
2457		/* Sanity check of curve server selects */
2458		# define SSL_SECOP_CURVE_CHECK (6 \| SSL_SECOP_OTHER_CURVE)
2459		/* Temporary DH key */
2460		# define SSL_SECOP_TMP_DH (7 \| SSL_SECOP_OTHER_PKEY)
2461		/* SSL/TLS version */
2462		# define SSL_SECOP_VERSION (9 \| SSL_SECOP_OTHER_NONE)
2463		/* Session tickets */
2464		# define SSL_SECOP_TICKET (10 \| SSL_SECOP_OTHER_NONE)
2465		/* Supported signature algorithms sent to peer */
2466		# define SSL_SECOP_SIGALG_SUPPORTED (11 \| SSL_SECOP_OTHER_SIGALG)
2467		/* Shared signature algorithm */
2468		# define SSL_SECOP_SIGALG_SHARED (12 \| SSL_SECOP_OTHER_SIGALG)
2469		/* Sanity check signature algorithm allowed */
2470		# define SSL_SECOP_SIGALG_CHECK (13 \| SSL_SECOP_OTHER_SIGALG)
2471		/* Used to get mask of supported public key signature algorithms */
2472		# define SSL_SECOP_SIGALG_MASK (14 \| SSL_SECOP_OTHER_SIGALG)
2473		/* Use to see if compression is allowed */
2474		# define SSL_SECOP_COMPRESSION (15 \| SSL_SECOP_OTHER_NONE)
2475		/* EE key in certificate */
2476		# define SSL_SECOP_EE_KEY (16 \| SSL_SECOP_OTHER_CERT)
2477		/* CA key in certificate */
2478		# define SSL_SECOP_CA_KEY (17 \| SSL_SECOP_OTHER_CERT)
2479		/* CA digest algorithm in certificate */
2480		# define SSL_SECOP_CA_MD (18 \| SSL_SECOP_OTHER_CERT)
2481		/* Peer EE key in certificate */
2482		# define SSL_SECOP_PEER_EE_KEY (SSL_SECOP_EE_KEY \| SSL_SECOP_PEER)
2483		/* Peer CA key in certificate */
2484		# define SSL_SECOP_PEER_CA_KEY (SSL_SECOP_CA_KEY \| SSL_SECOP_PEER)
2485		/* Peer CA digest algorithm in certificate */
2486		# define SSL_SECOP_PEER_CA_MD (SSL_SECOP_CA_MD \| SSL_SECOP_PEER)
2487
2488		void SSL_set_security_level(SSL *s, int level);
2489		__owur int SSL_get_security_level(const SSL *s);
2490		void SSL_set_security_callback(SSL *s,
2491		int (cb) (const SSL s, const SSL_CTX *ctx,
2492		int op, int bits, int nid,
2493		void other, void ex));
2494		int (SSL_get_security_callback(const SSL s)) (const SSL *s,
2495		const SSL_CTX *ctx, int op,
2496		int bits, int nid, void *other,
2497		void *ex);
2498		void SSL_set0_security_ex_data(SSL s, void ex);
2499		__owur void SSL_get0_security_ex_data(const SSL s);
2500
2501		void SSL_CTX_set_security_level(SSL_CTX *ctx, int level);
2502		__owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
2503		void SSL_CTX_set_security_callback(SSL_CTX *ctx,
2504		int (cb) (const SSL s, const SSL_CTX *ctx,
2505		int op, int bits, int nid,
2506		void other, void ex));
2507		int (SSL_CTX_get_security_callback(const SSL_CTX ctx)) (const SSL *s,
2508		const SSL_CTX *ctx,
2509		int op, int bits,
2510		int nid,
2511		void *other,
2512		void *ex);
2513		void SSL_CTX_set0_security_ex_data(SSL_CTX ctx, void ex);
2514		__owur void SSL_CTX_get0_security_ex_data(const SSL_CTX ctx);
2515
2516		/* OPENSSL_INIT flag 0x010000 reserved for internal use */
2517		# define OPENSSL_INIT_NO_LOAD_SSL_STRINGS 0x00100000L
2518		# define OPENSSL_INIT_LOAD_SSL_STRINGS 0x00200000L
2519
2520		# define OPENSSL_INIT_SSL_DEFAULT \
2521		(OPENSSL_INIT_LOAD_SSL_STRINGS \| OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
2522
2523		int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
2524
2525		# ifndef OPENSSL_NO_UNIT_TEST
2526		__owur const struct openssl_ssl_test_functions *SSL_test_functions(void);
2527		# endif
2528
2529		__owur int SSL_free_buffers(SSL *ssl);
2530		__owur int SSL_alloc_buffers(SSL *ssl);
2531
2532		/* Status codes passed to the decrypt session ticket callback. Some of these
2533		* are for internal use only and are never passed to the callback. */
2534		typedef int SSL_TICKET_STATUS;
2535
2536		/* Support for ticket appdata */
2537		/* fatal error, malloc failure */
2538		# define SSL_TICKET_FATAL_ERR_MALLOC 0
2539		/* fatal error, either from parsing or decrypting the ticket */
2540		# define SSL_TICKET_FATAL_ERR_OTHER 1
2541		/* No ticket present */
2542		# define SSL_TICKET_NONE 2
2543		/* Empty ticket present */
2544		# define SSL_TICKET_EMPTY 3
2545		/* the ticket couldn't be decrypted */
2546		# define SSL_TICKET_NO_DECRYPT 4
2547		/* a ticket was successfully decrypted */
2548		# define SSL_TICKET_SUCCESS 5
2549		/* same as above but the ticket needs to be renewed */
2550		# define SSL_TICKET_SUCCESS_RENEW 6
2551
2552		/* Return codes for the decrypt session ticket callback */
2553		typedef int SSL_TICKET_RETURN;
2554
2555		/* An error occurred */
2556		#define SSL_TICKET_RETURN_ABORT 0
2557		/* Do not use the ticket, do not send a renewed ticket to the client */
2558		#define SSL_TICKET_RETURN_IGNORE 1
2559		/* Do not use the ticket, send a renewed ticket to the client */
2560		#define SSL_TICKET_RETURN_IGNORE_RENEW 2
2561		/* Use the ticket, do not send a renewed ticket to the client */
2562		#define SSL_TICKET_RETURN_USE 3
2563		/* Use the ticket, send a renewed ticket to the client */
2564		#define SSL_TICKET_RETURN_USE_RENEW 4
2565
2566		typedef int (SSL_CTX_generate_session_ticket_fn)(SSL s, void *arg);
2567		typedef SSL_TICKET_RETURN (SSL_CTX_decrypt_session_ticket_fn)(SSL s, SSL_SESSION *ss,
2568		const unsigned char *keyname,
2569		size_t keyname_length,
2570		SSL_TICKET_STATUS status,
2571		void *arg);
2572		int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
2573		SSL_CTX_generate_session_ticket_fn gen_cb,
2574		SSL_CTX_decrypt_session_ticket_fn dec_cb,
2575		void *arg);
2576		int SSL_SESSION_set1_ticket_appdata(SSL_SESSION ss, const void data, size_t len);
2577		int SSL_SESSION_get0_ticket_appdata(SSL_SESSION ss, void data, size_t len);
2578
2579		typedef unsigned int (DTLS_timer_cb)(SSL s, unsigned int timer_us);
2580
2581		void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);
2582
2583
2584		typedef int (SSL_allow_early_data_cb_fn)(SSL s, void *arg);
2585		void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
2586		SSL_allow_early_data_cb_fn cb,
2587		void *arg);
2588		void SSL_set_allow_early_data_cb(SSL *s,
2589		SSL_allow_early_data_cb_fn cb,
2590		void *arg);
2591
2592		/* store the default cipher strings inside the library */
2593		const char *OSSL_default_cipher_list(void);
2594		const char *OSSL_default_ciphersuites(void);
2595
2596		# ifdef __cplusplus
2597		}
2598		# endif
2599		#endif