ssl.h source code [include/openssl/ssl.h]

1	/*
2	* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
3	* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4	* Copyright 2005 Nokia. All rights reserved.
5	*
6	* Licensed under the OpenSSL license (the "License"). You may not use
7	* this file except in compliance with the License. You can obtain a copy
8	* in the file LICENSE in the source distribution or at
9	* https://www.openssl.org/source/license.html
10	*/
11
12	#ifndef HEADER_SSL_H
13	# define HEADER_SSL_H
14
15	# include <openssl/e_os2.h>
16	# include <openssl/opensslconf.h>
17	# include <openssl/comp.h>
18	# include <openssl/bio.h>
19	# if OPENSSL_API_COMPAT < 0x10100000L
20	# include <openssl/x509.h>
21	# include <openssl/crypto.h>
22	# include <openssl/buffer.h>
23	# endif
24	# include <openssl/lhash.h>
25	# include <openssl/pem.h>
26	# include <openssl/hmac.h>
27	# include <openssl/async.h>
28
29	# include <openssl/safestack.h>
30	# include <openssl/symhacks.h>
31	# include <openssl/ct.h>
32	# include <openssl/sslerr.h>
33
34	#ifdef __cplusplus
35	extern "C" {
36	#endif
37
38	/ OpenSSL version number for ASN.1 encoding of the session information /
39	/-*
40	* Version 0 - initial version
41	* Version 1 - added the optional peer certificate
42	*/
43	# define SSL_SESSION_ASN1_VERSION 0x0001
44
45	# define SSL_MAX_SSL_SESSION_ID_LENGTH 32
46	# define SSL_MAX_SID_CTX_LENGTH 32
47
48	# define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES (512/8)
49	# define SSL_MAX_KEY_ARG_LENGTH 8
50	# define SSL_MAX_MASTER_KEY_LENGTH 48
51
52	/ The maximum number of encrypt/decrypt pipelines we can support /
53	# define SSL_MAX_PIPELINES 32
54
55	/ text strings for the ciphers /
56
57	/ These are used to specify which ciphers to use and not to use /
58
59	# define SSL_TXT_LOW "LOW"
60	# define SSL_TXT_MEDIUM "MEDIUM"
61	# define SSL_TXT_HIGH "HIGH"
62	# define SSL_TXT_FIPS "FIPS"
63
64	# define SSL_TXT_aNULL "aNULL"
65	# define SSL_TXT_eNULL "eNULL"
66	# define SSL_TXT_NULL "NULL"
67
68	# define SSL_TXT_kRSA "kRSA"
69	# define SSL_TXT_kDHr "kDHr"/* this cipher class has been removed */
70	# define SSL_TXT_kDHd "kDHd"/* this cipher class has been removed */
71	# define SSL_TXT_kDH "kDH"/* this cipher class has been removed */
72	# define SSL_TXT_kEDH "kEDH"/* alias for kDHE */
73	# define SSL_TXT_kDHE "kDHE"
74	# define SSL_TXT_kECDHr "kECDHr"/* this cipher class has been removed */
75	# define SSL_TXT_kECDHe "kECDHe"/* this cipher class has been removed */
76	# define SSL_TXT_kECDH "kECDH"/* this cipher class has been removed */
77	# define SSL_TXT_kEECDH "kEECDH"/* alias for kECDHE */
78	# define SSL_TXT_kECDHE "kECDHE"
79	# define SSL_TXT_kPSK "kPSK"
80	# define SSL_TXT_kRSAPSK "kRSAPSK"
81	# define SSL_TXT_kECDHEPSK "kECDHEPSK"
82	# define SSL_TXT_kDHEPSK "kDHEPSK"
83	# define SSL_TXT_kGOST "kGOST"
84	# define SSL_TXT_kSRP "kSRP"
85
86	# define SSL_TXT_aRSA "aRSA"
87	# define SSL_TXT_aDSS "aDSS"
88	# define SSL_TXT_aDH "aDH"/* this cipher class has been removed */
89	# define SSL_TXT_aECDH "aECDH"/* this cipher class has been removed */
90	# define SSL_TXT_aECDSA "aECDSA"
91	# define SSL_TXT_aPSK "aPSK"
92	# define SSL_TXT_aGOST94 "aGOST94"
93	# define SSL_TXT_aGOST01 "aGOST01"
94	# define SSL_TXT_aGOST12 "aGOST12"
95	# define SSL_TXT_aGOST "aGOST"
96	# define SSL_TXT_aSRP "aSRP"
97
98	# define SSL_TXT_DSS "DSS"
99	# define SSL_TXT_DH "DH"
100	# define SSL_TXT_DHE "DHE"/* same as "kDHE:-ADH" */
101	# define SSL_TXT_EDH "EDH"/* alias for DHE */
102	# define SSL_TXT_ADH "ADH"
103	# define SSL_TXT_RSA "RSA"
104	# define SSL_TXT_ECDH "ECDH"
105	# define SSL_TXT_EECDH "EECDH"/* alias for ECDHE" */
106	# define SSL_TXT_ECDHE "ECDHE"/* same as "kECDHE:-AECDH" */
107	# define SSL_TXT_AECDH "AECDH"
108	# define SSL_TXT_ECDSA "ECDSA"
109	# define SSL_TXT_PSK "PSK"
110	# define SSL_TXT_SRP "SRP"
111
112	# define SSL_TXT_DES "DES"
113	# define SSL_TXT_3DES "3DES"
114	# define SSL_TXT_RC4 "RC4"
115	# define SSL_TXT_RC2 "RC2"
116	# define SSL_TXT_IDEA "IDEA"
117	# define SSL_TXT_SEED "SEED"
118	# define SSL_TXT_AES128 "AES128"
119	# define SSL_TXT_AES256 "AES256"
120	# define SSL_TXT_AES "AES"
121	# define SSL_TXT_AES_GCM "AESGCM"
122	# define SSL_TXT_AES_CCM "AESCCM"
123	# define SSL_TXT_AES_CCM_8 "AESCCM8"
124	# define SSL_TXT_CAMELLIA128 "CAMELLIA128"
125	# define SSL_TXT_CAMELLIA256 "CAMELLIA256"
126	# define SSL_TXT_CAMELLIA "CAMELLIA"
127	# define SSL_TXT_CHACHA20 "CHACHA20"
128	# define SSL_TXT_GOST "GOST89"
129	# define SSL_TXT_ARIA "ARIA"
130	# define SSL_TXT_ARIA_GCM "ARIAGCM"
131	# define SSL_TXT_ARIA128 "ARIA128"
132	# define SSL_TXT_ARIA256 "ARIA256"
133
134	# define SSL_TXT_MD5 "MD5"
135	# define SSL_TXT_SHA1 "SHA1"
136	# define SSL_TXT_SHA "SHA"/* same as "SHA1" */
137	# define SSL_TXT_GOST94 "GOST94"
138	# define SSL_TXT_GOST89MAC "GOST89MAC"
139	# define SSL_TXT_GOST12 "GOST12"
140	# define SSL_TXT_GOST89MAC12 "GOST89MAC12"
141	# define SSL_TXT_SHA256 "SHA256"
142	# define SSL_TXT_SHA384 "SHA384"
143
144	# define SSL_TXT_SSLV3 "SSLv3"
145	# define SSL_TXT_TLSV1 "TLSv1"
146	# define SSL_TXT_TLSV1_1 "TLSv1.1"
147	# define SSL_TXT_TLSV1_2 "TLSv1.2"
148
149	# define SSL_TXT_ALL "ALL"
150
151	/-*
152	* COMPLEMENTOF* definitions. These identifiers are used to (de-select)
153	* ciphers normally not being used.
154	* Example: "RC4" will activate all ciphers using RC4 including ciphers
155	* without authentication, which would normally disabled by DEFAULT (due
156	* the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
157	* will make sure that it is also disabled in the specific selection.
158	* COMPLEMENTOF* identifiers are portable between version, as adjustments
159	* to the default cipher setup will also be included here.
160	*
161	* COMPLEMENTOFDEFAULT does not experience the same special treatment that
162	* DEFAULT gets, as only selection is being done and no sorting as needed
163	* for DEFAULT.
164	*/
165	# define SSL_TXT_CMPALL "COMPLEMENTOFALL"
166	# define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
167
168	/*
169	* The following cipher list is used by default. It also is substituted when
170	* an application-defined cipher list string starts with 'DEFAULT'.
171	* This applies to ciphersuites for TLSv1.2 and below.
172	*/
173	# define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
174	/ This is the default set of TLSv1.3 ciphersuites /
175	# if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
176	# define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
177	"TLS_CHACHA20_POLY1305_SHA256:" \
178	"TLS_AES_128_GCM_SHA256"
179	# else
180	# define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:" \
181	"TLS_AES_128_GCM_SHA256"
182	#endif
183	/*
184	* As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
185	* starts with a reasonable order, and all we have to do for DEFAULT is
186	* throwing out anonymous and unencrypted ciphersuites! (The latter are not
187	* actually enabled by ALL, but "ALL:RSA" would enable some of them.)
188	*/
189
190	/ Used in SSL_set_shutdown()/SSL_get_shutdown(); /
191	# define SSL_SENT_SHUTDOWN 1
192	# define SSL_RECEIVED_SHUTDOWN 2
193
194	#ifdef __cplusplus
195	}
196	#endif
197
198	#ifdef __cplusplus
199	extern "C" {
200	#endif
201
202	# define SSL_FILETYPE_ASN1 X509_FILETYPE_ASN1
203	# define SSL_FILETYPE_PEM X509_FILETYPE_PEM
204
205	/*
206	* This is needed to stop compilers complaining about the 'struct ssl_st *'
207	* function parameters used to prototype callbacks in SSL_CTX.
208	*/
209	typedef struct ssl_st *ssl_crock_st;
210	typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
211	typedef struct ssl_method_st SSL_METHOD;
212	typedef struct ssl_cipher_st SSL_CIPHER;
213	typedef struct ssl_session_st SSL_SESSION;
214	typedef struct tls_sigalgs_st TLS_SIGALGS;
215	typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
216	typedef struct ssl_comp_st SSL_COMP;
217
218	STACK_OF(SSL_CIPHER);
219	STACK_OF(SSL_COMP);
220
221	/ SRTP protection profiles for use with the use_srtp extension (RFC 5764)/
222	typedef struct srtp_protection_profile_st {
223	const char *name;
224	unsigned long id;
225	} SRTP_PROTECTION_PROFILE;
226
227	DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
228
229	typedef int (tls_session_ticket_ext_cb_fn)(SSL s, const unsigned char *data,
230	int len, void *arg);
231	typedef int (tls_session_secret_cb_fn)(SSL s, void secret, int* *secret_len,
232	STACK_OF(SSL_CIPHER) *peer_ciphers,
233	const SSL_CIPHER *cipher, void* *arg);
234
235	/ Extension context codes /
236	/ This extension is only allowed in TLS /
237	#define SSL_EXT_TLS_ONLY 0x0001
238	/ This extension is only allowed in DTLS /
239	#define SSL_EXT_DTLS_ONLY 0x0002
240	/ Some extensions may be allowed in DTLS but we don't implement them for it /
241	#define SSL_EXT_TLS_IMPLEMENTATION_ONLY 0x0004
242	/ Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is /
243	#define SSL_EXT_SSL3_ALLOWED 0x0008
244	/ Extension is only defined for TLS1.2 and below /
245	#define SSL_EXT_TLS1_2_AND_BELOW_ONLY 0x0010
246	/ Extension is only defined for TLS1.3 and above /
247	#define SSL_EXT_TLS1_3_ONLY 0x0020
248	/ Ignore this extension during parsing if we are resuming /
249	#define SSL_EXT_IGNORE_ON_RESUMPTION 0x0040
250	#define SSL_EXT_CLIENT_HELLO 0x0080
251	/ Really means TLS1.2 or below /
252	#define SSL_EXT_TLS1_2_SERVER_HELLO 0x0100
253	#define SSL_EXT_TLS1_3_SERVER_HELLO 0x0200
254	#define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS 0x0400
255	#define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST 0x0800
256	#define SSL_EXT_TLS1_3_CERTIFICATE 0x1000
257	#define SSL_EXT_TLS1_3_NEW_SESSION_TICKET 0x2000
258	#define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST 0x4000
259
260	/ Typedefs for handling custom extensions /
261
262	typedef int (custom_ext_add_cb)(SSL s, unsigned int ext_type,
263	const unsigned char *out, size_t outlen,
264	int al, void* *add_arg);
265
266	typedef void (custom_ext_free_cb)(SSL s, unsigned int ext_type,
267	const unsigned char out, void* *add_arg);
268
269	typedef int (custom_ext_parse_cb)(SSL s, unsigned int ext_type,
270	const unsigned char *in, size_t inlen,
271	int al, void* *parse_arg);
272
273
274	typedef int (SSL_custom_ext_add_cb_ex)(SSL s, unsigned int ext_type,
275	unsigned int context,
276	const unsigned char **out,
277	size_t outlen, X509 x,
278	size_t chainidx,
279	int al, void* *add_arg);
280
281	typedef void (SSL_custom_ext_free_cb_ex)(SSL s, unsigned int ext_type,
282	unsigned int context,
283	const unsigned char *out,
284	void *add_arg);
285
286	typedef int (SSL_custom_ext_parse_cb_ex)(SSL s, unsigned int ext_type,
287	unsigned int context,
288	const unsigned char *in,
289	size_t inlen, X509 *x,
290	size_t chainidx,
291	int al, void* *parse_arg);
292
293	/ Typedef for verification callback /
294	typedef int (SSL_verify_cb)(int* preverify_ok, X509_STORE_CTX *x509_ctx);
295
296	/*
297	* Some values are reserved until OpenSSL 1.2.0 because they were previously
298	* included in SSL_OP_ALL in a 1.1.x release.
299	*
300	* Reserved value (until OpenSSL 1.2.0) 0x00000001U
301	* Reserved value (until OpenSSL 1.2.0) 0x00000002U
302	*/
303	/ Allow initial connection to servers that don't support RI /
304	# define SSL_OP_LEGACY_SERVER_CONNECT 0x00000004U
305
306	/ Reserved value (until OpenSSL 1.2.0) 0x00000008U /
307	# define SSL_OP_TLSEXT_PADDING 0x00000010U
308	/ Reserved value (until OpenSSL 1.2.0) 0x00000020U /
309	# define SSL_OP_SAFARI_ECDHE_ECDSA_BUG 0x00000040U
310	/*
311	* Reserved value (until OpenSSL 1.2.0) 0x00000080U
312	* Reserved value (until OpenSSL 1.2.0) 0x00000100U
313	* Reserved value (until OpenSSL 1.2.0) 0x00000200U
314	*/
315
316	/ In TLSv1.3 allow a non-(ec)dhe based kex_mode /
317	# define SSL_OP_ALLOW_NO_DHE_KEX 0x00000400U
318
319	/*
320	* Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added in
321	* OpenSSL 0.9.6d. Usually (depending on the application protocol) the
322	* workaround is not needed. Unfortunately some broken SSL/TLS
323	* implementations cannot handle it at all, which is why we include it in
324	* SSL_OP_ALL. Added in 0.9.6e
325	*/
326	# define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 0x00000800U
327
328	/ DTLS options /
329	# define SSL_OP_NO_QUERY_MTU 0x00001000U
330	/ Turn on Cookie Exchange (on relevant for servers) /
331	# define SSL_OP_COOKIE_EXCHANGE 0x00002000U
332	/ Don't use RFC4507 ticket extension /
333	# define SSL_OP_NO_TICKET 0x00004000U
334	# ifndef OPENSSL_NO_DTLS1_METHOD
335	/ Use Cisco's "speshul" version of DTLS_BAD_VER*
336	* (only with deprecated DTLSv1_client_method()) */
337	# define SSL_OP_CISCO_ANYCONNECT 0x00008000U
338	# endif
339
340	/ As server, disallow session resumption on renegotiation /
341	# define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0x00010000U
342	/ Don't use compression even if supported /
343	# define SSL_OP_NO_COMPRESSION 0x00020000U
344	/ Permit unsafe legacy renegotiation /
345	# define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0x00040000U
346	/ Disable encrypt-then-mac /
347	# define SSL_OP_NO_ENCRYPT_THEN_MAC 0x00080000U
348
349	/*
350	* Enable TLSv1.3 Compatibility mode. This is on by default. A future version
351	* of OpenSSL may have this disabled by default.
352	*/
353	# define SSL_OP_ENABLE_MIDDLEBOX_COMPAT 0x00100000U
354
355	/ Prioritize Chacha20Poly1305 when client does.*
356	* Modifies SSL_OP_CIPHER_SERVER_PREFERENCE */
357	# define SSL_OP_PRIORITIZE_CHACHA 0x00200000U
358
359	/*
360	* Set on servers to choose the cipher according to the server's preferences
361	*/
362	# define SSL_OP_CIPHER_SERVER_PREFERENCE 0x00400000U
363	/*
364	* If set, a server will allow a client to issue a SSLv3.0 version number as
365	* latest version supported in the premaster secret, even when TLSv1.0
366	* (version 3.1) was announced in the client hello. Normally this is
367	* forbidden to prevent version rollback attacks.
368	*/
369	# define SSL_OP_TLS_ROLLBACK_BUG 0x00800000U
370
371	/*
372	* Switches off automatic TLSv1.3 anti-replay protection for early data. This
373	* is a server-side option only (no effect on the client).
374	*/
375	# define SSL_OP_NO_ANTI_REPLAY 0x01000000U
376
377	# define SSL_OP_NO_SSLv3 0x02000000U
378	# define SSL_OP_NO_TLSv1 0x04000000U
379	# define SSL_OP_NO_TLSv1_2 0x08000000U
380	# define SSL_OP_NO_TLSv1_1 0x10000000U
381	# define SSL_OP_NO_TLSv1_3 0x20000000U
382
383	# define SSL_OP_NO_DTLSv1 0x04000000U
384	# define SSL_OP_NO_DTLSv1_2 0x08000000U
385
386	# define SSL_OP_NO_SSL_MASK (SSL_OP_NO_SSLv3\|\
387	SSL_OP_NO_TLSv1\|SSL_OP_NO_TLSv1_1\|SSL_OP_NO_TLSv1_2\|SSL_OP_NO_TLSv1_3)
388	# define SSL_OP_NO_DTLS_MASK (SSL_OP_NO_DTLSv1\|SSL_OP_NO_DTLSv1_2)
389
390	/ Disallow all renegotiation /
391	# define SSL_OP_NO_RENEGOTIATION 0x40000000U
392
393	/*
394	* Make server add server-hello extension from early version of cryptopro
395	* draft, when GOST ciphersuite is negotiated. Required for interoperability
396	* with CryptoPro CSP 3.x
397	*/
398	# define SSL_OP_CRYPTOPRO_TLSEXT_BUG 0x80000000U
399
400	/*
401	* SSL_OP_ALL: various bug workarounds that should be rather harmless.
402	* This used to be 0x000FFFFFL before 0.9.7.
403	* This used to be 0x80000BFFU before 1.1.1.
404	*/
405	# define SSL_OP_ALL (SSL_OP_CRYPTOPRO_TLSEXT_BUG\|\
406	SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS\|\
407	SSL_OP_LEGACY_SERVER_CONNECT\|\
408	SSL_OP_TLSEXT_PADDING\|\
409	SSL_OP_SAFARI_ECDHE_ECDSA_BUG)
410
411	/ OBSOLETE OPTIONS: retained for compatibility /
412
413	/ Removed from OpenSSL 1.1.0. Was 0x00000001L /
414	/ Related to removed SSLv2. /
415	# define SSL_OP_MICROSOFT_SESS_ID_BUG 0x0
416	/ Removed from OpenSSL 1.1.0. Was 0x00000002L /
417	/ Related to removed SSLv2. /
418	# define SSL_OP_NETSCAPE_CHALLENGE_BUG 0x0
419	/ Removed from OpenSSL 0.9.8q and 1.0.0c. Was 0x00000008L /
420	/ Dead forever, see CVE-2010-4180 /
421	# define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0x0
422	/ Removed from OpenSSL 1.0.1h and 1.0.2. Was 0x00000010L /
423	/ Refers to ancient SSLREF and SSLv2. /
424	# define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0x0
425	/ Removed from OpenSSL 1.1.0. Was 0x00000020 /
426	# define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0x0
427	/ Removed from OpenSSL 0.9.7h and 0.9.8b. Was 0x00000040L /
428	# define SSL_OP_MSIE_SSLV2_RSA_PADDING 0x0
429	/ Removed from OpenSSL 1.1.0. Was 0x00000080 /
430	/ Ancient SSLeay version. /
431	# define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0x0
432	/ Removed from OpenSSL 1.1.0. Was 0x00000100L /
433	# define SSL_OP_TLS_D5_BUG 0x0
434	/ Removed from OpenSSL 1.1.0. Was 0x00000200L /
435	# define SSL_OP_TLS_BLOCK_PADDING_BUG 0x0
436	/ Removed from OpenSSL 1.1.0. Was 0x00080000L /
437	# define SSL_OP_SINGLE_ECDH_USE 0x0
438	/ Removed from OpenSSL 1.1.0. Was 0x00100000L /
439	# define SSL_OP_SINGLE_DH_USE 0x0
440	/ Removed from OpenSSL 1.0.1k and 1.0.2. Was 0x00200000L /
441	# define SSL_OP_EPHEMERAL_RSA 0x0
442	/ Removed from OpenSSL 1.1.0. Was 0x01000000L /
443	# define SSL_OP_NO_SSLv2 0x0
444	/ Removed from OpenSSL 1.0.1. Was 0x08000000L /
445	# define SSL_OP_PKCS1_CHECK_1 0x0
446	/ Removed from OpenSSL 1.0.1. Was 0x10000000L /
447	# define SSL_OP_PKCS1_CHECK_2 0x0
448	/ Removed from OpenSSL 1.1.0. Was 0x20000000L /
449	# define SSL_OP_NETSCAPE_CA_DN_BUG 0x0
450	/ Removed from OpenSSL 1.1.0. Was 0x40000000L /
451	# define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0x0
452
453	/*
454	* Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
455	* when just a single record has been written):
456	*/
457	# define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001U
458	/*
459	* Make it possible to retry SSL_write() with changed buffer location (buffer
460	* contents must stay the same!); this is not the default to avoid the
461	* misconception that non-blocking SSL_write() behaves like non-blocking
462	* write():
463	*/
464	# define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
465	/*
466	* Never bother the application with retries if the transport is blocking:
467	*/
468	# define SSL_MODE_AUTO_RETRY 0x00000004U
469	/ Don't attempt to automatically build certificate chain /
470	# define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
471	/*
472	* Save RAM by releasing read and write buffers when they're empty. (SSL3 and
473	* TLS only.) Released buffers are freed.
474	*/
475	# define SSL_MODE_RELEASE_BUFFERS 0x00000010U
476	/*
477	* Send the current time in the Random fields of the ClientHello and
478	* ServerHello records for compatibility with hypothetical implementations
479	* that require it.
480	*/
481	# define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
482	# define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
483	/*
484	* Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
485	* that reconnect with a downgraded protocol version; see
486	* draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
487	* application attempts a normal handshake. Only use this in explicit
488	* fallback retries, following the guidance in
489	* draft-ietf-tls-downgrade-scsv-00.
490	*/
491	# define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
492	/*
493	* Support Asynchronous operation
494	*/
495	# define SSL_MODE_ASYNC 0x00000100U
496
497	/*
498	* When using DTLS/SCTP, include the terminating zero in the label
499	* used for computing the endpoint-pair shared secret. Required for
500	* interoperability with implementations having this bug like these
501	* older version of OpenSSL:
502	* - OpenSSL 1.0.0 series
503	* - OpenSSL 1.0.1 series
504	* - OpenSSL 1.0.2 series
505	* - OpenSSL 1.1.0 series
506	* - OpenSSL 1.1.1 and 1.1.1a
507	*/
508	# define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
509
510	/ Cert related flags /
511	/*
512	* Many implementations ignore some aspects of the TLS standards such as
513	* enforcing certificate chain algorithms. When this is set we enforce them.
514	*/
515	# define SSL_CERT_FLAG_TLS_STRICT 0x00000001U
516
517	/ Suite B modes, takes same values as certificate verify flags /
518	# define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY 0x10000
519	/ Suite B 192 bit only mode /
520	# define SSL_CERT_FLAG_SUITEB_192_LOS 0x20000
521	/ Suite B 128 bit mode allowing 192 bit algorithms /
522	# define SSL_CERT_FLAG_SUITEB_128_LOS 0x30000
523
524	/ Perform all sorts of protocol violations for testing purposes /
525	# define SSL_CERT_FLAG_BROKEN_PROTOCOL 0x10000000
526
527	/ Flags for building certificate chains /
528	/ Treat any existing certificates as untrusted CAs /
529	# define SSL_BUILD_CHAIN_FLAG_UNTRUSTED 0x1
530	/ Don't include root CA in chain /
531	# define SSL_BUILD_CHAIN_FLAG_NO_ROOT 0x2
532	/ Just check certificates already there /
533	# define SSL_BUILD_CHAIN_FLAG_CHECK 0x4
534	/ Ignore verification errors /
535	# define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR 0x8
536	/ Clear verification errors from queue /
537	# define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR 0x10
538
539	/ Flags returned by SSL_check_chain /
540	/ Certificate can be used with this session /
541	# define CERT_PKEY_VALID 0x1
542	/ Certificate can also be used for signing /
543	# define CERT_PKEY_SIGN 0x2
544	/ EE certificate signing algorithm OK /
545	# define CERT_PKEY_EE_SIGNATURE 0x10
546	/ CA signature algorithms OK /
547	# define CERT_PKEY_CA_SIGNATURE 0x20
548	/ EE certificate parameters OK /
549	# define CERT_PKEY_EE_PARAM 0x40
550	/ CA certificate parameters OK /
551	# define CERT_PKEY_CA_PARAM 0x80
552	/ Signing explicitly allowed as opposed to SHA1 fallback /
553	# define CERT_PKEY_EXPLICIT_SIGN 0x100
554	/ Client CA issuer names match (always set for server cert) /
555	# define CERT_PKEY_ISSUER_NAME 0x200
556	/ Cert type matches client types (always set for server cert) /
557	# define CERT_PKEY_CERT_TYPE 0x400
558	/ Cert chain suitable to Suite B /
559	# define CERT_PKEY_SUITEB 0x800
560
561	# define SSL_CONF_FLAG_CMDLINE 0x1
562	# define SSL_CONF_FLAG_FILE 0x2
563	# define SSL_CONF_FLAG_CLIENT 0x4
564	# define SSL_CONF_FLAG_SERVER 0x8
565	# define SSL_CONF_FLAG_SHOW_ERRORS 0x10
566	# define SSL_CONF_FLAG_CERTIFICATE 0x20
567	# define SSL_CONF_FLAG_REQUIRE_PRIVATE 0x40
568	/ Configuration value types /
569	# define SSL_CONF_TYPE_UNKNOWN 0x0
570	# define SSL_CONF_TYPE_STRING 0x1
571	# define SSL_CONF_TYPE_FILE 0x2
572	# define SSL_CONF_TYPE_DIR 0x3
573	# define SSL_CONF_TYPE_NONE 0x4
574
575	/ Maximum length of the application-controlled segment of a a TLSv1.3 cookie /
576	# define SSL_COOKIE_LENGTH 4096
577
578	/*
579	* Note: SSL[_CTX]_set_{options,mode} use \|= op on the previous value, they
580	* cannot be used to clear bits.
581	*/
582
583	unsigned long SSL_CTX_get_options(const SSL_CTX *ctx);
584	unsigned long SSL_get_options(const SSL *s);
585	unsigned long SSL_CTX_clear_options(SSL_CTX ctx, unsigned* long op);
586	unsigned long SSL_clear_options(SSL s, unsigned* long op);
587	unsigned long SSL_CTX_set_options(SSL_CTX ctx, unsigned* long op);
588	unsigned long SSL_set_options(SSL s, unsigned* long op);
589
590	# define SSL_CTX_set_mode(ctx,op) \
591	SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
592	# define SSL_CTX_clear_mode(ctx,op) \
593	SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
594	# define SSL_CTX_get_mode(ctx) \
595	SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
596	# define SSL_clear_mode(ssl,op) \
597	SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
598	# define SSL_set_mode(ssl,op) \
599	SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
600	# define SSL_get_mode(ssl) \
601	SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
602	# define SSL_set_mtu(ssl, mtu) \
603	SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)
604	# define DTLS_set_link_mtu(ssl, mtu) \
605	SSL_ctrl((ssl),DTLS_CTRL_SET_LINK_MTU,(mtu),NULL)
606	# define DTLS_get_link_min_mtu(ssl) \
607	SSL_ctrl((ssl),DTLS_CTRL_GET_LINK_MIN_MTU,0,NULL)
608
609	# define SSL_get_secure_renegotiation_support(ssl) \
610	SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
611
612	# ifndef OPENSSL_NO_HEARTBEATS
613	# define SSL_heartbeat(ssl) \
614	SSL_ctrl((ssl),SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT,0,NULL)
615	# endif
616
617	# define SSL_CTX_set_cert_flags(ctx,op) \
618	SSL_CTX_ctrl((ctx),SSL_CTRL_CERT_FLAGS,(op),NULL)
619	# define SSL_set_cert_flags(s,op) \
620	SSL_ctrl((s),SSL_CTRL_CERT_FLAGS,(op),NULL)
621	# define SSL_CTX_clear_cert_flags(ctx,op) \
622	SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
623	# define SSL_clear_cert_flags(s,op) \
624	SSL_ctrl((s),SSL_CTRL_CLEAR_CERT_FLAGS,(op),NULL)
625
626	void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
627	void (cb) (int* write_p, int version,
628	int content_type, const void *buf,
629	size_t len, SSL ssl, void* *arg));
630	void SSL_set_msg_callback(SSL *ssl,
631	void (cb) (int* write_p, int version,
632	int content_type, const void *buf,
633	size_t len, SSL ssl, void* *arg));
634	# define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
635	# define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
636
637	# define SSL_get_extms_support(s) \
638	SSL_ctrl((s),SSL_CTRL_GET_EXTMS_SUPPORT,0,NULL)
639
640	# ifndef OPENSSL_NO_SRP
641
642	/ see tls_srp.c /
643	__owur int SSL_SRP_CTX_init(SSL *s);
644	__owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
645	int SSL_SRP_CTX_free(SSL *ctx);
646	int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
647	__owur int SSL_srp_server_param_with_username(SSL s, int* *ad);
648	__owur int SRP_Calc_A_param(SSL *s);
649
650	# endif
651
652	/ 100k max cert list /
653	# define SSL_MAX_CERT_LIST_DEFAULT 1024*100
654
655	# define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024*20)
656
657	/*
658	* This callback type is used inside SSL_CTX, SSL, and in the functions that
659	* set them. It is used to override the generation of SSL/TLS session IDs in
660	* a server. Return value should be zero on an error, non-zero to proceed.
661	* Also, callbacks should themselves check if the id they generate is unique
662	* otherwise the SSL handshake will fail with an error - callbacks can do
663	* this using the 'ssl' value they're passed by;
664	* SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
665	* is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
666	* bytes. The callback can alter this length to be less if desired. It is
667	* also an error for the callback to set the size to zero.
668	*/
669	typedef int (GEN_SESSION_CB) (SSL ssl, unsigned char *id,
670	unsigned int *id_len);
671
672	# define SSL_SESS_CACHE_OFF 0x0000
673	# define SSL_SESS_CACHE_CLIENT 0x0001
674	# define SSL_SESS_CACHE_SERVER 0x0002
675	# define SSL_SESS_CACHE_BOTH (SSL_SESS_CACHE_CLIENT\|SSL_SESS_CACHE_SERVER)
676	# define SSL_SESS_CACHE_NO_AUTO_CLEAR 0x0080
677	/ enough comments already ... see SSL_CTX_set_session_cache_mode(3) /
678	# define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 0x0100
679	# define SSL_SESS_CACHE_NO_INTERNAL_STORE 0x0200
680	# define SSL_SESS_CACHE_NO_INTERNAL \
681	(SSL_SESS_CACHE_NO_INTERNAL_LOOKUP\|SSL_SESS_CACHE_NO_INTERNAL_STORE)
682
683	LHASH_OF(SSL_SESSION) SSL_CTX_sessions(SSL_CTX ctx);
684	# define SSL_CTX_sess_number(ctx) \
685	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
686	# define SSL_CTX_sess_connect(ctx) \
687	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
688	# define SSL_CTX_sess_connect_good(ctx) \
689	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
690	# define SSL_CTX_sess_connect_renegotiate(ctx) \
691	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
692	# define SSL_CTX_sess_accept(ctx) \
693	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
694	# define SSL_CTX_sess_accept_renegotiate(ctx) \
695	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
696	# define SSL_CTX_sess_accept_good(ctx) \
697	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
698	# define SSL_CTX_sess_hits(ctx) \
699	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
700	# define SSL_CTX_sess_cb_hits(ctx) \
701	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
702	# define SSL_CTX_sess_misses(ctx) \
703	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
704	# define SSL_CTX_sess_timeouts(ctx) \
705	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
706	# define SSL_CTX_sess_cache_full(ctx) \
707	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)
708
709	void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
710	int (new_session_cb) (struct* ssl_st *ssl,
711	SSL_SESSION *sess));
712	int (SSL_CTX_sess_get_new_cb(SSL_CTX ctx)) (struct ssl_st *ssl,
713	SSL_SESSION *sess);
714	void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
715	void (remove_session_cb) (struct* ssl_ctx_st
716	*ctx,
717	SSL_SESSION *sess));
718	void (SSL_CTX_sess_get_remove_cb(SSL_CTX ctx)) (struct ssl_ctx_st *ctx,
719	SSL_SESSION *sess);
720	void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
721	SSL_SESSION (get_session_cb) (struct ssl_st
722	*ssl,
723	const unsigned char
724	data, int* len,
725	int *copy));
726	SSL_SESSION (SSL_CTX_sess_get_get_cb(SSL_CTX ctx)) (struct* ssl_st *ssl,
727	const unsigned char *data,
728	int len, int *copy);
729	void SSL_CTX_set_info_callback(SSL_CTX *ctx,
730	void (cb) (const* SSL ssl, int* type, int val));
731	void (SSL_CTX_get_info_callback(SSL_CTX ctx)) (const SSL ssl, int* type,
732	int val);
733	void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
734	int (client_cert_cb) (SSL ssl, X509 **x509,
735	EVP_PKEY **pkey));
736	int (SSL_CTX_get_client_cert_cb(SSL_CTX ctx)) (SSL ssl, X509 *x509,
737	EVP_PKEY **pkey);
738	# ifndef OPENSSL_NO_ENGINE
739	__owur int SSL_CTX_set_client_cert_engine(SSL_CTX ctx, ENGINE e);
740	# endif
741	void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
742	int (app_gen_cookie_cb) (SSL ssl,
743	unsigned char
744	*cookie,
745	unsigned int
746	*cookie_len));
747	void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
748	int (app_verify_cookie_cb) (SSL ssl,
749	const unsigned
750	char *cookie,
751	unsigned int
752	cookie_len));
753
754	void SSL_CTX_set_stateless_cookie_generate_cb(
755	SSL_CTX *ctx,
756	int (gen_stateless_cookie_cb) (SSL ssl,
757	unsigned char *cookie,
758	size_t *cookie_len));
759	void SSL_CTX_set_stateless_cookie_verify_cb(
760	SSL_CTX *ctx,
761	int (verify_stateless_cookie_cb) (SSL ssl,
762	const unsigned char *cookie,
763	size_t cookie_len));
764	# ifndef OPENSSL_NO_NEXTPROTONEG
765
766	typedef int (SSL_CTX_npn_advertised_cb_func)(SSL ssl,
767	const unsigned char **out,
768	unsigned int *outlen,
769	void *arg);
770	void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
771	SSL_CTX_npn_advertised_cb_func cb,
772	void *arg);
773	# define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
774
775	typedef int (SSL_CTX_npn_select_cb_func)(SSL s,
776	unsigned char **out,
777	unsigned char *outlen,
778	const unsigned char *in,
779	unsigned int inlen,
780	void *arg);
781	void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
782	SSL_CTX_npn_select_cb_func cb,
783	void *arg);
784	# define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
785
786	void SSL_get0_next_proto_negotiated(const SSL s, const* unsigned char **data,
787	unsigned *len);
788	# define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
789	# endif
790
791	__owur int SSL_select_next_proto(unsigned char *out, unsigned* char *outlen,
792	const unsigned char in, unsigned* int inlen,
793	const unsigned char *client,
794	unsigned int client_len);
795
796	# define OPENSSL_NPN_UNSUPPORTED 0
797	# define OPENSSL_NPN_NEGOTIATED 1
798	# define OPENSSL_NPN_NO_OVERLAP 2
799
800	__owur int SSL_CTX_set_alpn_protos(SSL_CTX ctx, const* unsigned char *protos,
801	unsigned int protos_len);
802	__owur int SSL_set_alpn_protos(SSL ssl, const* unsigned char *protos,
803	unsigned int protos_len);
804	typedef int (SSL_CTX_alpn_select_cb_func)(SSL ssl,
805	const unsigned char **out,
806	unsigned char *outlen,
807	const unsigned char *in,
808	unsigned int inlen,
809	void *arg);
810	void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
811	SSL_CTX_alpn_select_cb_func cb,
812	void *arg);
813	void SSL_get0_alpn_selected(const SSL ssl, const* unsigned char **data,
814	unsigned int *len);
815
816	# ifndef OPENSSL_NO_PSK
817	/*
818	* the maximum length of the buffer given to callbacks containing the
819	* resulting identity/psk
820	*/
821	# define PSK_MAX_IDENTITY_LEN 128
822	# define PSK_MAX_PSK_LEN 256
823	typedef unsigned int (SSL_psk_client_cb_func)(SSL ssl,
824	const char *hint,
825	char *identity,
826	unsigned int max_identity_len,
827	unsigned char *psk,
828	unsigned int max_psk_len);
829	void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
830	void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
831
832	typedef unsigned int (SSL_psk_server_cb_func)(SSL ssl,
833	const char *identity,
834	unsigned char *psk,
835	unsigned int max_psk_len);
836	void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
837	void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
838
839	__owur int SSL_CTX_use_psk_identity_hint(SSL_CTX ctx, const* char *identity_hint);
840	__owur int SSL_use_psk_identity_hint(SSL s, const* char *identity_hint);
841	const char SSL_get_psk_identity_hint(const* SSL *s);
842	const char SSL_get_psk_identity(const* SSL *s);
843	# endif
844
845	typedef int (SSL_psk_find_session_cb_func)(SSL ssl,
846	const unsigned char *identity,
847	size_t identity_len,
848	SSL_SESSION **sess);
849	typedef int (SSL_psk_use_session_cb_func)(SSL ssl, const EVP_MD *md,
850	const unsigned char **id,
851	size_t *idlen,
852	SSL_SESSION **sess);
853
854	void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
855	void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
856	SSL_psk_find_session_cb_func cb);
857	void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
858	void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
859	SSL_psk_use_session_cb_func cb);
860
861	/ Register callbacks to handle custom TLS Extensions for client or server. /
862
863	__owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
864	unsigned int ext_type);
865
866	__owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx,
867	unsigned int ext_type,
868	custom_ext_add_cb add_cb,
869	custom_ext_free_cb free_cb,
870	void *add_arg,
871	custom_ext_parse_cb parse_cb,
872	void *parse_arg);
873
874	__owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx,
875	unsigned int ext_type,
876	custom_ext_add_cb add_cb,
877	custom_ext_free_cb free_cb,
878	void *add_arg,
879	custom_ext_parse_cb parse_cb,
880	void *parse_arg);
881
882	__owur int SSL_CTX_add_custom_ext(SSL_CTX ctx, unsigned* int ext_type,
883	unsigned int context,
884	SSL_custom_ext_add_cb_ex add_cb,
885	SSL_custom_ext_free_cb_ex free_cb,
886	void *add_arg,
887	SSL_custom_ext_parse_cb_ex parse_cb,
888	void *parse_arg);
889
890	__owur int SSL_extension_supported(unsigned int ext_type);
891
892	# define SSL_NOTHING 1
893	# define SSL_WRITING 2
894	# define SSL_READING 3
895	# define SSL_X509_LOOKUP 4
896	# define SSL_ASYNC_PAUSED 5
897	# define SSL_ASYNC_NO_JOBS 6
898	# define SSL_CLIENT_HELLO_CB 7
899
900	/ These will only be used when doing non-blocking IO /
901	# define SSL_want_nothing(s) (SSL_want(s) == SSL_NOTHING)
902	# define SSL_want_read(s) (SSL_want(s) == SSL_READING)
903	# define SSL_want_write(s) (SSL_want(s) == SSL_WRITING)
904	# define SSL_want_x509_lookup(s) (SSL_want(s) == SSL_X509_LOOKUP)
905	# define SSL_want_async(s) (SSL_want(s) == SSL_ASYNC_PAUSED)
906	# define SSL_want_async_job(s) (SSL_want(s) == SSL_ASYNC_NO_JOBS)
907	# define SSL_want_client_hello_cb(s) (SSL_want(s) == SSL_CLIENT_HELLO_CB)
908
909	# define SSL_MAC_FLAG_READ_MAC_STREAM 1
910	# define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
911
912	/*
913	* A callback for logging out TLS key material. This callback should log out
914	* \|line\| followed by a newline.
915	*/
916	typedef void (SSL_CTX_keylog_cb_func)(const* SSL ssl, const* char *line);
917
918	/*
919	* SSL_CTX_set_keylog_callback configures a callback to log key material. This
920	* is intended for debugging use with tools like Wireshark. The cb function
921	* should log line followed by a newline.
922	*/
923	void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
924
925	/*
926	* SSL_CTX_get_keylog_callback returns the callback configured by
927	* SSL_CTX_set_keylog_callback.
928	*/
929	SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
930
931	int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
932	uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
933	int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
934	uint32_t SSL_get_max_early_data(const SSL *s);
935	int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data);
936	uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx);
937	int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data);
938	uint32_t SSL_get_recv_max_early_data(const SSL *s);
939
940	#ifdef __cplusplus
941	}
942	#endif
943
944	# include <openssl/ssl2.h>
945	# include <openssl/ssl3.h>
946	# include <openssl/tls1.h> /* This is mostly sslv3 with a few tweaks */
947	# include <openssl/dtls1.h> /* Datagram TLS */
948	# include <openssl/srtp.h> /* Support for the use_srtp extension */
949
950	#ifdef __cplusplus
951	extern "C" {
952	#endif
953
954	/*
955	* These need to be after the above set of includes due to a compiler bug
956	* in VisualStudio 2015
957	*/
958	DEFINE_STACK_OF_CONST(SSL_CIPHER)
959	DEFINE_STACK_OF(SSL_COMP)
960
961	/ compatibility /
962	# define SSL_set_app_data(s,arg) (SSL_set_ex_data(s,0,(char *)(arg)))
963	# define SSL_get_app_data(s) (SSL_get_ex_data(s,0))
964	# define SSL_SESSION_set_app_data(s,a) (SSL_SESSION_set_ex_data(s,0, \
965	(char *)(a)))
966	# define SSL_SESSION_get_app_data(s) (SSL_SESSION_get_ex_data(s,0))
967	# define SSL_CTX_get_app_data(ctx) (SSL_CTX_get_ex_data(ctx,0))
968	# define SSL_CTX_set_app_data(ctx,arg) (SSL_CTX_set_ex_data(ctx,0, \
969	(char *)(arg)))
970	DEPRECATEDIN_1_1_0(void SSL_set_debug(SSL s, int* debug))
971
972	/ TLSv1.3 KeyUpdate message types /
973	/ -1 used so that this is an invalid value for the on-the-wire protocol /
974	#define SSL_KEY_UPDATE_NONE -1
975	/ Values as defined for the on-the-wire protocol /
976	#define SSL_KEY_UPDATE_NOT_REQUESTED 0
977	#define SSL_KEY_UPDATE_REQUESTED 1
978
979	/*
980	* The valid handshake states (one for each type message sent and one for each
981	* type of message received). There are also two "special" states:
982	* TLS = TLS or DTLS state
983	* DTLS = DTLS specific state
984	* CR/SR = Client Read/Server Read
985	* CW/SW = Client Write/Server Write
986	*
987	* The "special" states are:
988	* TLS_ST_BEFORE = No handshake has been initiated yet
989	* TLS_ST_OK = A handshake has been successfully completed
990	*/
991	typedef enum {
992	TLS_ST_BEFORE,
993	TLS_ST_OK,
994	DTLS_ST_CR_HELLO_VERIFY_REQUEST,
995	TLS_ST_CR_SRVR_HELLO,
996	TLS_ST_CR_CERT,
997	TLS_ST_CR_CERT_STATUS,
998	TLS_ST_CR_KEY_EXCH,
999	TLS_ST_CR_CERT_REQ,
1000	TLS_ST_CR_SRVR_DONE,
1001	TLS_ST_CR_SESSION_TICKET,
1002	TLS_ST_CR_CHANGE,
1003	TLS_ST_CR_FINISHED,
1004	TLS_ST_CW_CLNT_HELLO,
1005	TLS_ST_CW_CERT,
1006	TLS_ST_CW_KEY_EXCH,
1007	TLS_ST_CW_CERT_VRFY,
1008	TLS_ST_CW_CHANGE,
1009	TLS_ST_CW_NEXT_PROTO,
1010	TLS_ST_CW_FINISHED,
1011	TLS_ST_SW_HELLO_REQ,
1012	TLS_ST_SR_CLNT_HELLO,
1013	DTLS_ST_SW_HELLO_VERIFY_REQUEST,
1014	TLS_ST_SW_SRVR_HELLO,
1015	TLS_ST_SW_CERT,
1016	TLS_ST_SW_KEY_EXCH,
1017	TLS_ST_SW_CERT_REQ,
1018	TLS_ST_SW_SRVR_DONE,
1019	TLS_ST_SR_CERT,
1020	TLS_ST_SR_KEY_EXCH,
1021	TLS_ST_SR_CERT_VRFY,
1022	TLS_ST_SR_NEXT_PROTO,
1023	TLS_ST_SR_CHANGE,
1024	TLS_ST_SR_FINISHED,
1025	TLS_ST_SW_SESSION_TICKET,
1026	TLS_ST_SW_CERT_STATUS,
1027	TLS_ST_SW_CHANGE,
1028	TLS_ST_SW_FINISHED,
1029	TLS_ST_SW_ENCRYPTED_EXTENSIONS,
1030	TLS_ST_CR_ENCRYPTED_EXTENSIONS,
1031	TLS_ST_CR_CERT_VRFY,
1032	TLS_ST_SW_CERT_VRFY,
1033	TLS_ST_CR_HELLO_REQ,
1034	TLS_ST_SW_KEY_UPDATE,
1035	TLS_ST_CW_KEY_UPDATE,
1036	TLS_ST_SR_KEY_UPDATE,
1037	TLS_ST_CR_KEY_UPDATE,
1038	TLS_ST_EARLY_DATA,
1039	TLS_ST_PENDING_EARLY_DATA_END,
1040	TLS_ST_CW_END_OF_EARLY_DATA,
1041	TLS_ST_SR_END_OF_EARLY_DATA
1042	} OSSL_HANDSHAKE_STATE;
1043
1044	/*
1045	* Most of the following state values are no longer used and are defined to be
1046	* the closest equivalent value in the current state machine code. Not all
1047	* defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
1048	* and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
1049	* SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
1050	*/
1051
1052	# define SSL_ST_CONNECT 0x1000
1053	# define SSL_ST_ACCEPT 0x2000
1054
1055	# define SSL_ST_MASK 0x0FFF
1056
1057	# define SSL_CB_LOOP 0x01
1058	# define SSL_CB_EXIT 0x02
1059	# define SSL_CB_READ 0x04
1060	# define SSL_CB_WRITE 0x08
1061	# define SSL_CB_ALERT 0x4000/* used in callback */
1062	# define SSL_CB_READ_ALERT (SSL_CB_ALERT\|SSL_CB_READ)
1063	# define SSL_CB_WRITE_ALERT (SSL_CB_ALERT\|SSL_CB_WRITE)
1064	# define SSL_CB_ACCEPT_LOOP (SSL_ST_ACCEPT\|SSL_CB_LOOP)
1065	# define SSL_CB_ACCEPT_EXIT (SSL_ST_ACCEPT\|SSL_CB_EXIT)
1066	# define SSL_CB_CONNECT_LOOP (SSL_ST_CONNECT\|SSL_CB_LOOP)
1067	# define SSL_CB_CONNECT_EXIT (SSL_ST_CONNECT\|SSL_CB_EXIT)
1068	# define SSL_CB_HANDSHAKE_START 0x10
1069	# define SSL_CB_HANDSHAKE_DONE 0x20
1070
1071	/ Is the SSL_connection established? /
1072	# define SSL_in_connect_init(a) (SSL_in_init(a) && !SSL_is_server(a))
1073	# define SSL_in_accept_init(a) (SSL_in_init(a) && SSL_is_server(a))
1074	int SSL_in_init(const SSL *s);
1075	int SSL_in_before(const SSL *s);
1076	int SSL_is_init_finished(const SSL *s);
1077
1078	/*
1079	* The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
1080	* should not need these
1081	*/
1082	# define SSL_ST_READ_HEADER 0xF0
1083	# define SSL_ST_READ_BODY 0xF1
1084	# define SSL_ST_READ_DONE 0xF2
1085
1086	/-*
1087	* Obtain latest Finished message
1088	* -- that we sent (SSL_get_finished)
1089	* -- that we expected from peer (SSL_get_peer_finished).
1090	* Returns length (0 == no Finished so far), copies up to 'count' bytes.
1091	*/
1092	size_t SSL_get_finished(const SSL s, void* *buf, size_t count);
1093	size_t SSL_get_peer_finished(const SSL s, void* *buf, size_t count);
1094
1095	/*
1096	* use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 3 options are
1097	* 'ored' with SSL_VERIFY_PEER if they are desired
1098	*/
1099	# define SSL_VERIFY_NONE 0x00
1100	# define SSL_VERIFY_PEER 0x01
1101	# define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
1102	# define SSL_VERIFY_CLIENT_ONCE 0x04
1103	# define SSL_VERIFY_POST_HANDSHAKE 0x08
1104
1105	# if OPENSSL_API_COMPAT < 0x10100000L
1106	# define OpenSSL_add_ssl_algorithms() SSL_library_init()
1107	# define SSLeay_add_ssl_algorithms() SSL_library_init()
1108	# endif
1109
1110	/ More backward compatibility /
1111	# define SSL_get_cipher(s) \
1112	SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1113	# define SSL_get_cipher_bits(s,np) \
1114	SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
1115	# define SSL_get_cipher_version(s) \
1116	SSL_CIPHER_get_version(SSL_get_current_cipher(s))
1117	# define SSL_get_cipher_name(s) \
1118	SSL_CIPHER_get_name(SSL_get_current_cipher(s))
1119	# define SSL_get_time(a) SSL_SESSION_get_time(a)
1120	# define SSL_set_time(a,b) SSL_SESSION_set_time((a),(b))
1121	# define SSL_get_timeout(a) SSL_SESSION_get_timeout(a)
1122	# define SSL_set_timeout(a,b) SSL_SESSION_set_timeout((a),(b))
1123
1124	# define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
1125	# define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)
1126
1127	DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
1128	# define SSL_AD_REASON_OFFSET 1000/* offset to get SSL_R_... value
1129	* from SSL_AD_... */
1130	/ These alert types are for SSLv3 and TLSv1 /
1131	# define SSL_AD_CLOSE_NOTIFY SSL3_AD_CLOSE_NOTIFY
1132	/ fatal /
1133	# define SSL_AD_UNEXPECTED_MESSAGE SSL3_AD_UNEXPECTED_MESSAGE
1134	/ fatal /
1135	# define SSL_AD_BAD_RECORD_MAC SSL3_AD_BAD_RECORD_MAC
1136	# define SSL_AD_DECRYPTION_FAILED TLS1_AD_DECRYPTION_FAILED
1137	# define SSL_AD_RECORD_OVERFLOW TLS1_AD_RECORD_OVERFLOW
1138	/ fatal /
1139	# define SSL_AD_DECOMPRESSION_FAILURE SSL3_AD_DECOMPRESSION_FAILURE
1140	/ fatal /
1141	# define SSL_AD_HANDSHAKE_FAILURE SSL3_AD_HANDSHAKE_FAILURE
1142	/ Not for TLS /
1143	# define SSL_AD_NO_CERTIFICATE SSL3_AD_NO_CERTIFICATE
1144	# define SSL_AD_BAD_CERTIFICATE SSL3_AD_BAD_CERTIFICATE
1145	# define SSL_AD_UNSUPPORTED_CERTIFICATE SSL3_AD_UNSUPPORTED_CERTIFICATE
1146	# define SSL_AD_CERTIFICATE_REVOKED SSL3_AD_CERTIFICATE_REVOKED
1147	# define SSL_AD_CERTIFICATE_EXPIRED SSL3_AD_CERTIFICATE_EXPIRED
1148	# define SSL_AD_CERTIFICATE_UNKNOWN SSL3_AD_CERTIFICATE_UNKNOWN
1149	/ fatal /
1150	# define SSL_AD_ILLEGAL_PARAMETER SSL3_AD_ILLEGAL_PARAMETER
1151	/ fatal /
1152	# define SSL_AD_UNKNOWN_CA TLS1_AD_UNKNOWN_CA
1153	/ fatal /
1154	# define SSL_AD_ACCESS_DENIED TLS1_AD_ACCESS_DENIED
1155	/ fatal /
1156	# define SSL_AD_DECODE_ERROR TLS1_AD_DECODE_ERROR
1157	# define SSL_AD_DECRYPT_ERROR TLS1_AD_DECRYPT_ERROR
1158	/ fatal /
1159	# define SSL_AD_EXPORT_RESTRICTION TLS1_AD_EXPORT_RESTRICTION
1160	/ fatal /
1161	# define SSL_AD_PROTOCOL_VERSION TLS1_AD_PROTOCOL_VERSION
1162	/ fatal /
1163	# define SSL_AD_INSUFFICIENT_SECURITY TLS1_AD_INSUFFICIENT_SECURITY
1164	/ fatal /
1165	# define SSL_AD_INTERNAL_ERROR TLS1_AD_INTERNAL_ERROR
1166	# define SSL_AD_USER_CANCELLED TLS1_AD_USER_CANCELLED
1167	# define SSL_AD_NO_RENEGOTIATION TLS1_AD_NO_RENEGOTIATION
1168	# define SSL_AD_MISSING_EXTENSION TLS13_AD_MISSING_EXTENSION
1169	# define SSL_AD_CERTIFICATE_REQUIRED TLS13_AD_CERTIFICATE_REQUIRED
1170	# define SSL_AD_UNSUPPORTED_EXTENSION TLS1_AD_UNSUPPORTED_EXTENSION
1171	# define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
1172	# define SSL_AD_UNRECOGNIZED_NAME TLS1_AD_UNRECOGNIZED_NAME
1173	# define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
1174	# define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
1175	/ fatal /
1176	# define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY
1177	/ fatal /
1178	# define SSL_AD_INAPPROPRIATE_FALLBACK TLS1_AD_INAPPROPRIATE_FALLBACK
1179	# define SSL_AD_NO_APPLICATION_PROTOCOL TLS1_AD_NO_APPLICATION_PROTOCOL
1180	# define SSL_ERROR_NONE 0
1181	# define SSL_ERROR_SSL 1
1182	# define SSL_ERROR_WANT_READ 2
1183	# define SSL_ERROR_WANT_WRITE 3
1184	# define SSL_ERROR_WANT_X509_LOOKUP 4
1185	# define SSL_ERROR_SYSCALL 5/* look at error stack/return
1186	* value/errno */
1187	# define SSL_ERROR_ZERO_RETURN 6
1188	# define SSL_ERROR_WANT_CONNECT 7
1189	# define SSL_ERROR_WANT_ACCEPT 8
1190	# define SSL_ERROR_WANT_ASYNC 9
1191	# define SSL_ERROR_WANT_ASYNC_JOB 10
1192	# define SSL_ERROR_WANT_CLIENT_HELLO_CB 11
1193	# define SSL_CTRL_SET_TMP_DH 3
1194	# define SSL_CTRL_SET_TMP_ECDH 4
1195	# define SSL_CTRL_SET_TMP_DH_CB 6
1196	# define SSL_CTRL_GET_CLIENT_CERT_REQUEST 9
1197	# define SSL_CTRL_GET_NUM_RENEGOTIATIONS 10
1198	# define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS 11
1199	# define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS 12
1200	# define SSL_CTRL_GET_FLAGS 13
1201	# define SSL_CTRL_EXTRA_CHAIN_CERT 14
1202	# define SSL_CTRL_SET_MSG_CALLBACK 15
1203	# define SSL_CTRL_SET_MSG_CALLBACK_ARG 16
1204	/ only applies to datagram connections /
1205	# define SSL_CTRL_SET_MTU 17
1206	/ Stats /
1207	# define SSL_CTRL_SESS_NUMBER 20
1208	# define SSL_CTRL_SESS_CONNECT 21
1209	# define SSL_CTRL_SESS_CONNECT_GOOD 22
1210	# define SSL_CTRL_SESS_CONNECT_RENEGOTIATE 23
1211	# define SSL_CTRL_SESS_ACCEPT 24
1212	# define SSL_CTRL_SESS_ACCEPT_GOOD 25
1213	# define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE 26
1214	# define SSL_CTRL_SESS_HIT 27
1215	# define SSL_CTRL_SESS_CB_HIT 28
1216	# define SSL_CTRL_SESS_MISSES 29
1217	# define SSL_CTRL_SESS_TIMEOUTS 30
1218	# define SSL_CTRL_SESS_CACHE_FULL 31
1219	# define SSL_CTRL_MODE 33
1220	# define SSL_CTRL_GET_READ_AHEAD 40
1221	# define SSL_CTRL_SET_READ_AHEAD 41
1222	# define SSL_CTRL_SET_SESS_CACHE_SIZE 42
1223	# define SSL_CTRL_GET_SESS_CACHE_SIZE 43
1224	# define SSL_CTRL_SET_SESS_CACHE_MODE 44
1225	# define SSL_CTRL_GET_SESS_CACHE_MODE 45
1226	# define SSL_CTRL_GET_MAX_CERT_LIST 50
1227	# define SSL_CTRL_SET_MAX_CERT_LIST 51
1228	# define SSL_CTRL_SET_MAX_SEND_FRAGMENT 52
1229	/ see tls1.h for macros based on these /
1230	# define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 53
1231	# define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 54
1232	# define SSL_CTRL_SET_TLSEXT_HOSTNAME 55
1233	# define SSL_CTRL_SET_TLSEXT_DEBUG_CB 56
1234	# define SSL_CTRL_SET_TLSEXT_DEBUG_ARG 57
1235	# define SSL_CTRL_GET_TLSEXT_TICKET_KEYS 58
1236	# define SSL_CTRL_SET_TLSEXT_TICKET_KEYS 59
1237	/# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT 60 /
1238	/# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 /
1239	/# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 /
1240	# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB 63
1241	# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG 64
1242	# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE 65
1243	# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS 66
1244	# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS 67
1245	# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS 68
1246	# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS 69
1247	# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP 70
1248	# define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP 71
1249	# define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB 72
1250	# define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB 75
1251	# define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB 76
1252	# define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB 77
1253	# define SSL_CTRL_SET_SRP_ARG 78
1254	# define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME 79
1255	# define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH 80
1256	# define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD 81
1257	# ifndef OPENSSL_NO_HEARTBEATS
1258	# define SSL_CTRL_DTLS_EXT_SEND_HEARTBEAT 85
1259	# define SSL_CTRL_GET_DTLS_EXT_HEARTBEAT_PENDING 86
1260	# define SSL_CTRL_SET_DTLS_EXT_HEARTBEAT_NO_REQUESTS 87
1261	# endif
1262	# define DTLS_CTRL_GET_TIMEOUT 73
1263	# define DTLS_CTRL_HANDLE_TIMEOUT 74
1264	# define SSL_CTRL_GET_RI_SUPPORT 76
1265	# define SSL_CTRL_CLEAR_MODE 78
1266	# define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB 79
1267	# define SSL_CTRL_GET_EXTRA_CHAIN_CERTS 82
1268	# define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS 83
1269	# define SSL_CTRL_CHAIN 88
1270	# define SSL_CTRL_CHAIN_CERT 89
1271	# define SSL_CTRL_GET_GROUPS 90
1272	# define SSL_CTRL_SET_GROUPS 91
1273	# define SSL_CTRL_SET_GROUPS_LIST 92
1274	# define SSL_CTRL_GET_SHARED_GROUP 93
1275	# define SSL_CTRL_SET_SIGALGS 97
1276	# define SSL_CTRL_SET_SIGALGS_LIST 98
1277	# define SSL_CTRL_CERT_FLAGS 99
1278	# define SSL_CTRL_CLEAR_CERT_FLAGS 100
1279	# define SSL_CTRL_SET_CLIENT_SIGALGS 101
1280	# define SSL_CTRL_SET_CLIENT_SIGALGS_LIST 102
1281	# define SSL_CTRL_GET_CLIENT_CERT_TYPES 103
1282	# define SSL_CTRL_SET_CLIENT_CERT_TYPES 104
1283	# define SSL_CTRL_BUILD_CERT_CHAIN 105
1284	# define SSL_CTRL_SET_VERIFY_CERT_STORE 106
1285	# define SSL_CTRL_SET_CHAIN_CERT_STORE 107
1286	# define SSL_CTRL_GET_PEER_SIGNATURE_NID 108
1287	# define SSL_CTRL_GET_PEER_TMP_KEY 109
1288	# define SSL_CTRL_GET_RAW_CIPHERLIST 110
1289	# define SSL_CTRL_GET_EC_POINT_FORMATS 111
1290	# define SSL_CTRL_GET_CHAIN_CERTS 115
1291	# define SSL_CTRL_SELECT_CURRENT_CERT 116
1292	# define SSL_CTRL_SET_CURRENT_CERT 117
1293	# define SSL_CTRL_SET_DH_AUTO 118
1294	# define DTLS_CTRL_SET_LINK_MTU 120
1295	# define DTLS_CTRL_GET_LINK_MIN_MTU 121
1296	# define SSL_CTRL_GET_EXTMS_SUPPORT 122
1297	# define SSL_CTRL_SET_MIN_PROTO_VERSION 123
1298	# define SSL_CTRL_SET_MAX_PROTO_VERSION 124
1299	# define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT 125
1300	# define SSL_CTRL_SET_MAX_PIPELINES 126
1301	# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE 127
1302	# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB 128
1303	# define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG 129
1304	# define SSL_CTRL_GET_MIN_PROTO_VERSION 130
1305	# define SSL_CTRL_GET_MAX_PROTO_VERSION 131
1306	# define SSL_CTRL_GET_SIGNATURE_NID 132
1307	# define SSL_CTRL_GET_TMP_KEY 133
1308	# define SSL_CERT_SET_FIRST 1
1309	# define SSL_CERT_SET_NEXT 2
1310	# define SSL_CERT_SET_SERVER 3
1311	# define DTLSv1_get_timeout(ssl, arg) \
1312	SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)(arg))
1313	# define DTLSv1_handle_timeout(ssl) \
1314	SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
1315	# define SSL_num_renegotiations(ssl) \
1316	SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
1317	# define SSL_clear_num_renegotiations(ssl) \
1318	SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
1319	# define SSL_total_renegotiations(ssl) \
1320	SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)
1321	# define SSL_CTX_set_tmp_dh(ctx,dh) \
1322	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1323	# define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
1324	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1325	# define SSL_CTX_set_dh_auto(ctx, onoff) \
1326	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1327	# define SSL_set_dh_auto(s, onoff) \
1328	SSL_ctrl(s,SSL_CTRL_SET_DH_AUTO,onoff,NULL)
1329	# define SSL_set_tmp_dh(ssl,dh) \
1330	SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)(dh))
1331	# define SSL_set_tmp_ecdh(ssl,ecdh) \
1332	SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)(ecdh))
1333	# define SSL_CTX_add_extra_chain_cert(ctx,x509) \
1334	SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)(x509))
1335	# define SSL_CTX_get_extra_chain_certs(ctx,px509) \
1336	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,0,px509)
1337	# define SSL_CTX_get_extra_chain_certs_only(ctx,px509) \
1338	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_EXTRA_CHAIN_CERTS,1,px509)
1339	# define SSL_CTX_clear_extra_chain_certs(ctx) \
1340	SSL_CTX_ctrl(ctx,SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS,0,NULL)
1341	# define SSL_CTX_set0_chain(ctx,sk) \
1342	SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1343	# define SSL_CTX_set1_chain(ctx,sk) \
1344	SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1345	# define SSL_CTX_add0_chain_cert(ctx,x509) \
1346	SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1347	# define SSL_CTX_add1_chain_cert(ctx,x509) \
1348	SSL_CTX_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1349	# define SSL_CTX_get0_chain_certs(ctx,px509) \
1350	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1351	# define SSL_CTX_clear_chain_certs(ctx) \
1352	SSL_CTX_set0_chain(ctx,NULL)
1353	# define SSL_CTX_build_cert_chain(ctx, flags) \
1354	SSL_CTX_ctrl(ctx,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1355	# define SSL_CTX_select_current_cert(ctx,x509) \
1356	SSL_CTX_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1357	# define SSL_CTX_set_current_cert(ctx, op) \
1358	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1359	# define SSL_CTX_set0_verify_cert_store(ctx,st) \
1360	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1361	# define SSL_CTX_set1_verify_cert_store(ctx,st) \
1362	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1363	# define SSL_CTX_set0_chain_cert_store(ctx,st) \
1364	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1365	# define SSL_CTX_set1_chain_cert_store(ctx,st) \
1366	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1367	# define SSL_set0_chain(ctx,sk) \
1368	SSL_ctrl(ctx,SSL_CTRL_CHAIN,0,(char *)(sk))
1369	# define SSL_set1_chain(ctx,sk) \
1370	SSL_ctrl(ctx,SSL_CTRL_CHAIN,1,(char *)(sk))
1371	# define SSL_add0_chain_cert(ctx,x509) \
1372	SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,0,(char *)(x509))
1373	# define SSL_add1_chain_cert(ctx,x509) \
1374	SSL_ctrl(ctx,SSL_CTRL_CHAIN_CERT,1,(char *)(x509))
1375	# define SSL_get0_chain_certs(ctx,px509) \
1376	SSL_ctrl(ctx,SSL_CTRL_GET_CHAIN_CERTS,0,px509)
1377	# define SSL_clear_chain_certs(ctx) \
1378	SSL_set0_chain(ctx,NULL)
1379	# define SSL_build_cert_chain(s, flags) \
1380	SSL_ctrl(s,SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
1381	# define SSL_select_current_cert(ctx,x509) \
1382	SSL_ctrl(ctx,SSL_CTRL_SELECT_CURRENT_CERT,0,(char *)(x509))
1383	# define SSL_set_current_cert(ctx,op) \
1384	SSL_ctrl(ctx,SSL_CTRL_SET_CURRENT_CERT, op, NULL)
1385	# define SSL_set0_verify_cert_store(s,st) \
1386	SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,0,(char *)(st))
1387	# define SSL_set1_verify_cert_store(s,st) \
1388	SSL_ctrl(s,SSL_CTRL_SET_VERIFY_CERT_STORE,1,(char *)(st))
1389	# define SSL_set0_chain_cert_store(s,st) \
1390	SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,0,(char *)(st))
1391	# define SSL_set1_chain_cert_store(s,st) \
1392	SSL_ctrl(s,SSL_CTRL_SET_CHAIN_CERT_STORE,1,(char *)(st))
1393	# define SSL_get1_groups(ctx, s) \
1394	SSL_ctrl(ctx,SSL_CTRL_GET_GROUPS,0,(char *)(s))
1395	# define SSL_CTX_set1_groups(ctx, glist, glistlen) \
1396	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1397	# define SSL_CTX_set1_groups_list(ctx, s) \
1398	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1399	# define SSL_set1_groups(ctx, glist, glistlen) \
1400	SSL_ctrl(ctx,SSL_CTRL_SET_GROUPS,glistlen,(char *)(glist))
1401	# define SSL_set1_groups_list(ctx, s) \
1402	SSL_ctrl(ctx,SSL_CTRL_SET_GROUPS_LIST,0,(char *)(s))
1403	# define SSL_get_shared_group(s, n) \
1404	SSL_ctrl(s,SSL_CTRL_GET_SHARED_GROUP,n,NULL)
1405	# define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
1406	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1407	# define SSL_CTX_set1_sigalgs_list(ctx, s) \
1408	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1409	# define SSL_set1_sigalgs(ctx, slist, slistlen) \
1410	SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS,slistlen,(int *)(slist))
1411	# define SSL_set1_sigalgs_list(ctx, s) \
1412	SSL_ctrl(ctx,SSL_CTRL_SET_SIGALGS_LIST,0,(char *)(s))
1413	# define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
1414	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,slistlen,(int *)(slist))
1415	# define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
1416	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1417	# define SSL_set1_client_sigalgs(ctx, slist, slistlen) \
1418	SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS,clistlen,(int *)(slist))
1419	# define SSL_set1_client_sigalgs_list(ctx, s) \
1420	SSL_ctrl(ctx,SSL_CTRL_SET_CLIENT_SIGALGS_LIST,0,(char *)(s))
1421	# define SSL_get0_certificate_types(s, clist) \
1422	SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
1423	# define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
1424	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen, \
1425	(char *)(clist))
1426	# define SSL_set1_client_certificate_types(s, clist, clistlen) \
1427	SSL_ctrl(s,SSL_CTRL_SET_CLIENT_CERT_TYPES,clistlen,(char *)(clist))
1428	# define SSL_get_signature_nid(s, pn) \
1429	SSL_ctrl(s,SSL_CTRL_GET_SIGNATURE_NID,0,pn)
1430	# define SSL_get_peer_signature_nid(s, pn) \
1431	SSL_ctrl(s,SSL_CTRL_GET_PEER_SIGNATURE_NID,0,pn)
1432	# define SSL_get_peer_tmp_key(s, pk) \
1433	SSL_ctrl(s,SSL_CTRL_GET_PEER_TMP_KEY,0,pk)
1434	# define SSL_get_tmp_key(s, pk) \
1435	SSL_ctrl(s,SSL_CTRL_GET_TMP_KEY,0,pk)
1436	# define SSL_get0_raw_cipherlist(s, plst) \
1437	SSL_ctrl(s,SSL_CTRL_GET_RAW_CIPHERLIST,0,plst)
1438	# define SSL_get0_ec_point_formats(s, plst) \
1439	SSL_ctrl(s,SSL_CTRL_GET_EC_POINT_FORMATS,0,plst)
1440	# define SSL_CTX_set_min_proto_version(ctx, version) \
1441	SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1442	# define SSL_CTX_set_max_proto_version(ctx, version) \
1443	SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1444	# define SSL_CTX_get_min_proto_version(ctx) \
1445	SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1446	# define SSL_CTX_get_max_proto_version(ctx) \
1447	SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1448	# define SSL_set_min_proto_version(s, version) \
1449	SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
1450	# define SSL_set_max_proto_version(s, version) \
1451	SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
1452	# define SSL_get_min_proto_version(s) \
1453	SSL_ctrl(s, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
1454	# define SSL_get_max_proto_version(s) \
1455	SSL_ctrl(s, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
1456
1457	/ Backwards compatibility, original 1.1.0 names /
1458	# define SSL_CTRL_GET_SERVER_TMP_KEY \
1459	SSL_CTRL_GET_PEER_TMP_KEY
1460	# define SSL_get_server_tmp_key(s, pk) \
1461	SSL_get_peer_tmp_key(s, pk)
1462
1463	/*
1464	* The following symbol names are old and obsolete. They are kept
1465	* for compatibility reasons only and should not be used anymore.
1466	*/
1467	# define SSL_CTRL_GET_CURVES SSL_CTRL_GET_GROUPS
1468	# define SSL_CTRL_SET_CURVES SSL_CTRL_SET_GROUPS
1469	# define SSL_CTRL_SET_CURVES_LIST SSL_CTRL_SET_GROUPS_LIST
1470	# define SSL_CTRL_GET_SHARED_CURVE SSL_CTRL_GET_SHARED_GROUP
1471
1472	# define SSL_get1_curves SSL_get1_groups
1473	# define SSL_CTX_set1_curves SSL_CTX_set1_groups
1474	# define SSL_CTX_set1_curves_list SSL_CTX_set1_groups_list
1475	# define SSL_set1_curves SSL_set1_groups
1476	# define SSL_set1_curves_list SSL_set1_groups_list
1477	# define SSL_get_shared_curve SSL_get_shared_group
1478
1479
1480	# if OPENSSL_API_COMPAT < 0x10100000L
1481	/ Provide some compatibility macros for removed functionality. /
1482	# define SSL_CTX_need_tmp_RSA(ctx) 0
1483	# define SSL_CTX_set_tmp_rsa(ctx,rsa) 1
1484	# define SSL_need_tmp_RSA(ssl) 0
1485	# define SSL_set_tmp_rsa(ssl,rsa) 1
1486	# define SSL_CTX_set_ecdh_auto(dummy, onoff) ((onoff) != 0)
1487	# define SSL_set_ecdh_auto(dummy, onoff) ((onoff) != 0)
1488	/*
1489	* We "pretend" to call the callback to avoid warnings about unused static
1490	* functions.
1491	*/
1492	# define SSL_CTX_set_tmp_rsa_callback(ctx, cb) while(0) (cb)(NULL, 0, 0)
1493	# define SSL_set_tmp_rsa_callback(ssl, cb) while(0) (cb)(NULL, 0, 0)
1494	# endif
1495	__owur const BIO_METHOD BIO_f_ssl(void*);
1496	__owur BIO BIO_new_ssl(SSL_CTX ctx, int client);
1497	__owur BIO BIO_new_ssl_connect(SSL_CTX ctx);
1498	__owur BIO BIO_new_buffer_ssl_connect(SSL_CTX ctx);
1499	__owur int BIO_ssl_copy_session_id(BIO to, BIO from);
1500	void BIO_ssl_shutdown(BIO *ssl_bio);
1501
1502	__owur int SSL_CTX_set_cipher_list(SSL_CTX , const* char *str);
1503	__owur SSL_CTX SSL_CTX_new(const* SSL_METHOD *meth);
1504	int SSL_CTX_up_ref(SSL_CTX *ctx);
1505	void SSL_CTX_free(SSL_CTX *);
1506	__owur long SSL_CTX_set_timeout(SSL_CTX ctx, long* t);
1507	__owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
1508	__owur X509_STORE SSL_CTX_get_cert_store(const* SSL_CTX *);
1509	void SSL_CTX_set_cert_store(SSL_CTX , X509_STORE );
1510	void SSL_CTX_set1_cert_store(SSL_CTX , X509_STORE );
1511	__owur int SSL_want(const SSL *s);
1512	__owur int SSL_clear(SSL *s);
1513
1514	void SSL_CTX_flush_sessions(SSL_CTX ctx, long* tm);
1515
1516	__owur const SSL_CIPHER SSL_get_current_cipher(const* SSL *s);
1517	__owur const SSL_CIPHER SSL_get_pending_cipher(const* SSL *s);
1518	__owur int SSL_CIPHER_get_bits(const SSL_CIPHER c, int* *alg_bits);
1519	__owur const char SSL_CIPHER_get_version(const* SSL_CIPHER *c);
1520	__owur const char SSL_CIPHER_get_name(const* SSL_CIPHER *c);
1521	__owur const char SSL_CIPHER_standard_name(const* SSL_CIPHER *c);
1522	__owur const char OPENSSL_cipher_name(const* char *rfc_name);
1523	__owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
1524	__owur uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c);
1525	__owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
1526	__owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
1527	__owur const EVP_MD SSL_CIPHER_get_handshake_digest(const* SSL_CIPHER *c);
1528	__owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
1529
1530	__owur int SSL_get_fd(const SSL *s);
1531	__owur int SSL_get_rfd(const SSL *s);
1532	__owur int SSL_get_wfd(const SSL *s);
1533	__owur const char SSL_get_cipher_list(const* SSL s, int* n);
1534	__owur char SSL_get_shared_ciphers(const* SSL s, char* buf, int* size);
1535	__owur int SSL_get_read_ahead(const SSL *s);
1536	__owur int SSL_pending(const SSL *s);
1537	__owur int SSL_has_pending(const SSL *s);
1538	# ifndef OPENSSL_NO_SOCK
1539	__owur int SSL_set_fd(SSL s, int* fd);
1540	__owur int SSL_set_rfd(SSL s, int* fd);
1541	__owur int SSL_set_wfd(SSL s, int* fd);
1542	# endif
1543	void SSL_set0_rbio(SSL s, BIO rbio);
1544	void SSL_set0_wbio(SSL s, BIO wbio);
1545	void SSL_set_bio(SSL s, BIO rbio, BIO *wbio);
1546	__owur BIO SSL_get_rbio(const* SSL *s);
1547	__owur BIO SSL_get_wbio(const* SSL *s);
1548	__owur int SSL_set_cipher_list(SSL s, const* char *str);
1549	__owur int SSL_CTX_set_ciphersuites(SSL_CTX ctx, const* char *str);
1550	__owur int SSL_set_ciphersuites(SSL s, const* char *str);
1551	void SSL_set_read_ahead(SSL s, int* yes);
1552	__owur int SSL_get_verify_mode(const SSL *s);
1553	__owur int SSL_get_verify_depth(const SSL *s);
1554	__owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
1555	void SSL_set_verify(SSL s, int* mode, SSL_verify_cb callback);
1556	void SSL_set_verify_depth(SSL s, int* depth);
1557	void SSL_set_cert_cb(SSL s, int* (cb) (SSL ssl, void arg), void* *arg);
1558	# ifndef OPENSSL_NO_RSA
1559	__owur int SSL_use_RSAPrivateKey(SSL ssl, RSA rsa);
1560	__owur int SSL_use_RSAPrivateKey_ASN1(SSL ssl, const* unsigned char *d,
1561	long len);
1562	# endif
1563	__owur int SSL_use_PrivateKey(SSL ssl, EVP_PKEY pkey);
1564	__owur int SSL_use_PrivateKey_ASN1(int pk, SSL ssl, const* unsigned char *d,
1565	long len);
1566	__owur int SSL_use_certificate(SSL ssl, X509 x);
1567	__owur int SSL_use_certificate_ASN1(SSL ssl, const* unsigned char d, int* len);
1568	__owur int SSL_use_cert_and_key(SSL ssl, X509 x509, EVP_PKEY *privatekey,
1569	STACK_OF(X509) chain, int* override);
1570
1571
1572	/ serverinfo file format versions /
1573	# define SSL_SERVERINFOV1 1
1574	# define SSL_SERVERINFOV2 2
1575
1576	/ Set serverinfo data for the current active cert. /
1577	__owur int SSL_CTX_use_serverinfo(SSL_CTX ctx, const* unsigned char *serverinfo,
1578	size_t serverinfo_length);
1579	__owur int SSL_CTX_use_serverinfo_ex(SSL_CTX ctx, unsigned* int version,
1580	const unsigned char *serverinfo,
1581	size_t serverinfo_length);
1582	__owur int SSL_CTX_use_serverinfo_file(SSL_CTX ctx, const* char *file);
1583
1584	#ifndef OPENSSL_NO_RSA
1585	__owur int SSL_use_RSAPrivateKey_file(SSL ssl, const* char file, int* type);
1586	#endif
1587
1588	__owur int SSL_use_PrivateKey_file(SSL ssl, const* char file, int* type);
1589	__owur int SSL_use_certificate_file(SSL ssl, const* char file, int* type);
1590
1591	#ifndef OPENSSL_NO_RSA
1592	__owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX ctx, const* char *file,
1593	int type);
1594	#endif
1595	__owur int SSL_CTX_use_PrivateKey_file(SSL_CTX ctx, const* char *file,
1596	int type);
1597	__owur int SSL_CTX_use_certificate_file(SSL_CTX ctx, const* char *file,
1598	int type);
1599	/ PEM type /
1600	__owur int SSL_CTX_use_certificate_chain_file(SSL_CTX ctx, const* char *file);
1601	__owur int SSL_use_certificate_chain_file(SSL ssl, const* char *file);
1602	__owur STACK_OF(X509_NAME) SSL_load_client_CA_file(const* char *file);
1603	__owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1604	const char *file);
1605	int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
1606	const char *dir);
1607
1608	# if OPENSSL_API_COMPAT < 0x10100000L
1609	# define SSL_load_error_strings() \
1610	OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
1611	\| OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
1612	# endif
1613
1614	__owur const char SSL_state_string(const* SSL *s);
1615	__owur const char SSL_rstate_string(const* SSL *s);
1616	__owur const char SSL_state_string_long(const* SSL *s);
1617	__owur const char SSL_rstate_string_long(const* SSL *s);
1618	__owur long SSL_SESSION_get_time(const SSL_SESSION *s);
1619	__owur long SSL_SESSION_set_time(SSL_SESSION s, long* t);
1620	__owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
1621	__owur long SSL_SESSION_set_timeout(SSL_SESSION s, long* t);
1622	__owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
1623	__owur int SSL_SESSION_set_protocol_version(SSL_SESSION s, int* version);
1624
1625	__owur const char SSL_SESSION_get0_hostname(const* SSL_SESSION *s);
1626	__owur int SSL_SESSION_set1_hostname(SSL_SESSION s, const* char *hostname);
1627	void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
1628	const unsigned char **alpn,
1629	size_t *len);
1630	__owur int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s,
1631	const unsigned char *alpn,
1632	size_t len);
1633	__owur const SSL_CIPHER SSL_SESSION_get0_cipher(const* SSL_SESSION *s);
1634	__owur int SSL_SESSION_set_cipher(SSL_SESSION s, const* SSL_CIPHER *cipher);
1635	__owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
1636	__owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
1637	void SSL_SESSION_get0_ticket(const SSL_SESSION s, const* unsigned char **tick,
1638	size_t *len);
1639	__owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
1640	__owur int SSL_SESSION_set_max_early_data(SSL_SESSION *s,
1641	uint32_t max_early_data);
1642	__owur int SSL_copy_session_id(SSL to, const* SSL *from);
1643	__owur X509 SSL_SESSION_get0_peer(SSL_SESSION s);
1644	__owur int SSL_SESSION_set1_id_context(SSL_SESSION *s,
1645	const unsigned char *sid_ctx,
1646	unsigned int sid_ctx_len);
1647	__owur int SSL_SESSION_set1_id(SSL_SESSION s, const* unsigned char *sid,
1648	unsigned int sid_len);
1649	__owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
1650
1651	__owur SSL_SESSION SSL_SESSION_new(void*);
1652	__owur SSL_SESSION SSL_SESSION_dup(SSL_SESSION src);
1653	const unsigned char SSL_SESSION_get_id(const* SSL_SESSION *s,
1654	unsigned int *len);
1655	const unsigned char SSL_SESSION_get0_id_context(const* SSL_SESSION *s,
1656	unsigned int *len);
1657	__owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
1658	# ifndef OPENSSL_NO_STDIO
1659	int SSL_SESSION_print_fp(FILE fp, const* SSL_SESSION *ses);
1660	# endif
1661	int SSL_SESSION_print(BIO fp, const* SSL_SESSION *ses);
1662	int SSL_SESSION_print_keylog(BIO bp, const* SSL_SESSION *x);
1663	int SSL_SESSION_up_ref(SSL_SESSION *ses);
1664	void SSL_SESSION_free(SSL_SESSION *ses);
1665	__owur int i2d_SSL_SESSION(SSL_SESSION in, unsigned* char **pp);
1666	__owur int SSL_set_session(SSL to, SSL_SESSION session);
1667	int SSL_CTX_add_session(SSL_CTX ctx, SSL_SESSION session);
1668	int SSL_CTX_remove_session(SSL_CTX ctx, SSL_SESSION session);
1669	__owur int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb);
1670	__owur int SSL_set_generate_session_id(SSL *s, GEN_SESSION_CB cb);
1671	__owur int SSL_has_matching_session_id(const SSL *s,
1672	const unsigned char *id,
1673	unsigned int id_len);
1674	SSL_SESSION d2i_SSL_SESSION(SSL_SESSION a, const* unsigned char **pp,
1675	long length);
1676
1677	# ifdef HEADER_X509_H
1678	__owur X509 SSL_get_peer_certificate(const* SSL *s);
1679	# endif
1680
1681	__owur STACK_OF(X509) SSL_get_peer_cert_chain(const* SSL *s);
1682
1683	__owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
1684	__owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
1685	__owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
1686	void SSL_CTX_set_verify(SSL_CTX ctx, int* mode, SSL_verify_cb callback);
1687	void SSL_CTX_set_verify_depth(SSL_CTX ctx, int* depth);
1688	void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1689	int (cb) (X509_STORE_CTX , void *),
1690	void *arg);
1691	void SSL_CTX_set_cert_cb(SSL_CTX c, int* (cb) (SSL ssl, void *arg),
1692	void *arg);
1693	# ifndef OPENSSL_NO_RSA
1694	__owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX ctx, RSA rsa);
1695	__owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX ctx, const* unsigned char *d,
1696	long len);
1697	# endif
1698	__owur int SSL_CTX_use_PrivateKey(SSL_CTX ctx, EVP_PKEY pkey);
1699	__owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
1700	const unsigned char d, long* len);
1701	__owur int SSL_CTX_use_certificate(SSL_CTX ctx, X509 x);
1702	__owur int SSL_CTX_use_certificate_ASN1(SSL_CTX ctx, int* len,
1703	const unsigned char *d);
1704	__owur int SSL_CTX_use_cert_and_key(SSL_CTX ctx, X509 x509, EVP_PKEY *privatekey,
1705	STACK_OF(X509) chain, int* override);
1706
1707	void SSL_CTX_set_default_passwd_cb(SSL_CTX ctx, pem_password_cb cb);
1708	void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX ctx, void* *u);
1709	pem_password_cb SSL_CTX_get_default_passwd_cb(SSL_CTX ctx);
1710	void SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX ctx);
1711	void SSL_set_default_passwd_cb(SSL s, pem_password_cb cb);
1712	void SSL_set_default_passwd_cb_userdata(SSL s, void* *u);
1713	pem_password_cb SSL_get_default_passwd_cb(SSL s);
1714	void SSL_get_default_passwd_cb_userdata(SSL s);
1715
1716	__owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
1717	__owur int SSL_check_private_key(const SSL *ctx);
1718
1719	__owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
1720	const unsigned char *sid_ctx,
1721	unsigned int sid_ctx_len);
1722
1723	SSL SSL_new(SSL_CTX ctx);
1724	int SSL_up_ref(SSL *s);
1725	int SSL_is_dtls(const SSL *s);
1726	__owur int SSL_set_session_id_context(SSL ssl, const* unsigned char *sid_ctx,
1727	unsigned int sid_ctx_len);
1728
1729	__owur int SSL_CTX_set_purpose(SSL_CTX ctx, int* purpose);
1730	__owur int SSL_set_purpose(SSL ssl, int* purpose);
1731	__owur int SSL_CTX_set_trust(SSL_CTX ctx, int* trust);
1732	__owur int SSL_set_trust(SSL ssl, int* trust);
1733
1734	__owur int SSL_set1_host(SSL s, const* char *hostname);
1735	__owur int SSL_add1_host(SSL s, const* char *hostname);
1736	__owur const char SSL_get0_peername(SSL s);
1737	void SSL_set_hostflags(SSL s, unsigned* int flags);
1738
1739	__owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
1740	__owur int SSL_CTX_dane_mtype_set(SSL_CTX ctx, const* EVP_MD *md,
1741	uint8_t mtype, uint8_t ord);
1742	__owur int SSL_dane_enable(SSL s, const* char *basedomain);
1743	__owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1744	uint8_t mtype, unsigned const char *data, size_t dlen);
1745	__owur int SSL_get0_dane_authority(SSL s, X509 mcert, EVP_PKEY *mspki);
1746	__owur int SSL_get0_dane_tlsa(SSL s, uint8_t usage, uint8_t *selector,
1747	uint8_t mtype, unsigned* const char **data,
1748	size_t *dlen);
1749	/*
1750	* Bridge opacity barrier between libcrypt and libssl, also needed to support
1751	* offline testing in test/danetest.c
1752	*/
1753	SSL_DANE SSL_get0_dane(SSL ssl);
1754	/*
1755	* DANE flags
1756	*/
1757	unsigned long SSL_CTX_dane_set_flags(SSL_CTX ctx, unsigned* long flags);
1758	unsigned long SSL_CTX_dane_clear_flags(SSL_CTX ctx, unsigned* long flags);
1759	unsigned long SSL_dane_set_flags(SSL ssl, unsigned* long flags);
1760	unsigned long SSL_dane_clear_flags(SSL ssl, unsigned* long flags);
1761
1762	__owur int SSL_CTX_set1_param(SSL_CTX ctx, X509_VERIFY_PARAM vpm);
1763	__owur int SSL_set1_param(SSL ssl, X509_VERIFY_PARAM vpm);
1764
1765	__owur X509_VERIFY_PARAM SSL_CTX_get0_param(SSL_CTX ctx);
1766	__owur X509_VERIFY_PARAM SSL_get0_param(SSL ssl);
1767
1768	# ifndef OPENSSL_NO_SRP
1769	int SSL_CTX_set_srp_username(SSL_CTX ctx, char* *name);
1770	int SSL_CTX_set_srp_password(SSL_CTX ctx, char* *password);
1771	int SSL_CTX_set_srp_strength(SSL_CTX ctx, int* strength);
1772	int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
1773	char (cb) (SSL , void* *));
1774	int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
1775	int (cb) (SSL , void *));
1776	int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
1777	int (cb) (SSL , int , void* *));
1778	int SSL_CTX_set_srp_cb_arg(SSL_CTX ctx, void* *arg);
1779
1780	int SSL_set_srp_server_param(SSL s, const* BIGNUM N, const* BIGNUM *g,
1781	BIGNUM sa, BIGNUM v, char *info);
1782	int SSL_set_srp_server_param_pw(SSL s, const* char user, const* char *pass,
1783	const char *grp);
1784
1785	__owur BIGNUM SSL_get_srp_g(SSL s);
1786	__owur BIGNUM SSL_get_srp_N(SSL s);
1787
1788	__owur char SSL_get_srp_username(SSL s);
1789	__owur char SSL_get_srp_userinfo(SSL s);
1790	# endif
1791
1792	/*
1793	* ClientHello callback and helpers.
1794	*/
1795
1796	# define SSL_CLIENT_HELLO_SUCCESS 1
1797	# define SSL_CLIENT_HELLO_ERROR 0
1798	# define SSL_CLIENT_HELLO_RETRY (-1)
1799
1800	typedef int (SSL_client_hello_cb_fn) (SSL s, int al, void* *arg);
1801	void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
1802	void *arg);
1803	int SSL_client_hello_isv2(SSL *s);
1804	unsigned int SSL_client_hello_get0_legacy_version(SSL *s);
1805	size_t SSL_client_hello_get0_random(SSL s, const* unsigned char **out);
1806	size_t SSL_client_hello_get0_session_id(SSL s, const* unsigned char **out);
1807	size_t SSL_client_hello_get0_ciphers(SSL s, const* unsigned char **out);
1808	size_t SSL_client_hello_get0_compression_methods(SSL *s,
1809	const unsigned char **out);
1810	int SSL_client_hello_get1_extensions_present(SSL s, int* *out, size_t outlen);
1811	int SSL_client_hello_get0_ext(SSL s, unsigned* int type,
1812	const unsigned char *out, size_t outlen);
1813
1814	void SSL_certs_clear(SSL *s);
1815	void SSL_free(SSL *ssl);
1816	# ifdef OSSL_ASYNC_FD
1817	/*
1818	* Windows application developer has to include windows.h to use these.
1819	*/
1820	__owur int SSL_waiting_for_async(SSL *s);
1821	__owur int SSL_get_all_async_fds(SSL s, OSSL_ASYNC_FD fds, size_t *numfds);
1822	__owur int SSL_get_changed_async_fds(SSL s, OSSL_ASYNC_FD addfd,
1823	size_t numaddfds, OSSL_ASYNC_FD delfd,
1824	size_t *numdelfds);
1825	# endif
1826	__owur int SSL_accept(SSL *ssl);
1827	__owur int SSL_stateless(SSL *s);
1828	__owur int SSL_connect(SSL *ssl);
1829	__owur int SSL_read(SSL ssl, void* buf, int* num);
1830	__owur int SSL_read_ex(SSL ssl, void* buf, size_t num, size_t readbytes);
1831
1832	# define SSL_READ_EARLY_DATA_ERROR 0
1833	# define SSL_READ_EARLY_DATA_SUCCESS 1
1834	# define SSL_READ_EARLY_DATA_FINISH 2
1835
1836	__owur int SSL_read_early_data(SSL s, void* *buf, size_t num,
1837	size_t *readbytes);
1838	__owur int SSL_peek(SSL ssl, void* buf, int* num);
1839	__owur int SSL_peek_ex(SSL ssl, void* buf, size_t num, size_t readbytes);
1840	__owur int SSL_write(SSL ssl, const* void buf, int* num);
1841	__owur int SSL_write_ex(SSL s, const* void buf, size_t num, size_t written);
1842	__owur int SSL_write_early_data(SSL s, const* void *buf, size_t num,
1843	size_t *written);
1844	long SSL_ctrl(SSL ssl, int* cmd, long larg, void *parg);
1845	long SSL_callback_ctrl(SSL , int, void* ()(void*));
1846	long SSL_CTX_ctrl(SSL_CTX ctx, int* cmd, long larg, void *parg);
1847	long SSL_CTX_callback_ctrl(SSL_CTX , int, void* ()(void*));
1848
1849	# define SSL_EARLY_DATA_NOT_SENT 0
1850	# define SSL_EARLY_DATA_REJECTED 1
1851	# define SSL_EARLY_DATA_ACCEPTED 2
1852
1853	__owur int SSL_get_early_data_status(const SSL *s);
1854
1855	__owur int SSL_get_error(const SSL s, int* ret_code);
1856	__owur const char SSL_get_version(const* SSL *s);
1857
1858	/ This sets the 'default' SSL version that SSL_new() will create /
1859	__owur int SSL_CTX_set_ssl_version(SSL_CTX ctx, const* SSL_METHOD *meth);
1860
1861	# ifndef OPENSSL_NO_SSL3_METHOD
1862	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD SSLv3_method(void)) /* SSLv3 /
1863	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD SSLv3_server_method(void*))
1864	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD SSLv3_client_method(void*))
1865	# endif
1866
1867	#define SSLv23_method TLS_method
1868	#define SSLv23_server_method TLS_server_method
1869	#define SSLv23_client_method TLS_client_method
1870
1871	/ Negotiate highest available SSL/TLS version /
1872	__owur const SSL_METHOD TLS_method(void*);
1873	__owur const SSL_METHOD TLS_server_method(void*);
1874	__owur const SSL_METHOD TLS_client_method(void*);
1875
1876	# ifndef OPENSSL_NO_TLS1_METHOD
1877	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_method(void)) /* TLSv1.0 /
1878	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_server_method(void*))
1879	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_client_method(void*))
1880	# endif
1881
1882	# ifndef OPENSSL_NO_TLS1_1_METHOD
1883	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_1_method(void)) /* TLSv1.1 /
1884	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_1_server_method(void*))
1885	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_1_client_method(void*))
1886	# endif
1887
1888	# ifndef OPENSSL_NO_TLS1_2_METHOD
1889	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_2_method(void)) /* TLSv1.2 /
1890	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_2_server_method(void*))
1891	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD TLSv1_2_client_method(void*))
1892	# endif
1893
1894	# ifndef OPENSSL_NO_DTLS1_METHOD
1895	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD DTLSv1_method(void)) /* DTLSv1.0 /
1896	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD DTLSv1_server_method(void*))
1897	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD DTLSv1_client_method(void*))
1898	# endif
1899
1900	# ifndef OPENSSL_NO_DTLS1_2_METHOD
1901	/ DTLSv1.2 /
1902	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD DTLSv1_2_method(void*))
1903	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD DTLSv1_2_server_method(void*))
1904	DEPRECATEDIN_1_1_0(__owur const SSL_METHOD DTLSv1_2_client_method(void*))
1905	# endif
1906
1907	__owur const SSL_METHOD DTLS_method(void); /* DTLS 1.0 and 1.2 /
1908	__owur const SSL_METHOD DTLS_server_method(void); /* DTLS 1.0 and 1.2 /
1909	__owur const SSL_METHOD DTLS_client_method(void); /* DTLS 1.0 and 1.2 /
1910
1911	__owur size_t DTLS_get_data_mtu(const SSL *s);
1912
1913	__owur STACK_OF(SSL_CIPHER) SSL_get_ciphers(const* SSL *s);
1914	__owur STACK_OF(SSL_CIPHER) SSL_CTX_get_ciphers(const* SSL_CTX *ctx);
1915	__owur STACK_OF(SSL_CIPHER) SSL_get_client_ciphers(const* SSL *s);
1916	__owur STACK_OF(SSL_CIPHER) SSL_get1_supported_ciphers(SSL s);
1917
1918	__owur int SSL_do_handshake(SSL *s);
1919	int SSL_key_update(SSL s, int* updatetype);
1920	int SSL_get_key_update_type(const SSL *s);
1921	int SSL_renegotiate(SSL *s);
1922	int SSL_renegotiate_abbreviated(SSL *s);
1923	__owur int SSL_renegotiate_pending(const SSL *s);
1924	int SSL_shutdown(SSL *s);
1925	__owur int SSL_verify_client_post_handshake(SSL *s);
1926	void SSL_CTX_set_post_handshake_auth(SSL_CTX ctx, int* val);
1927	void SSL_set_post_handshake_auth(SSL s, int* val);
1928
1929	__owur const SSL_METHOD SSL_CTX_get_ssl_method(const* SSL_CTX *ctx);
1930	__owur const SSL_METHOD SSL_get_ssl_method(const* SSL *s);
1931	__owur int SSL_set_ssl_method(SSL s, const* SSL_METHOD *method);
1932	__owur const char SSL_alert_type_string_long(int* value);
1933	__owur const char SSL_alert_type_string(int* value);
1934	__owur const char SSL_alert_desc_string_long(int* value);
1935	__owur const char SSL_alert_desc_string(int* value);
1936
1937	void SSL_set0_CA_list(SSL s, STACK_OF(X509_NAME) name_list);
1938	void SSL_CTX_set0_CA_list(SSL_CTX ctx, STACK_OF(X509_NAME) name_list);
1939	__owur const STACK_OF(X509_NAME) SSL_get0_CA_list(const* SSL *s);
1940	__owur const STACK_OF(X509_NAME) SSL_CTX_get0_CA_list(const* SSL_CTX *ctx);
1941	__owur int SSL_add1_to_CA_list(SSL ssl, const* X509 *x);
1942	__owur int SSL_CTX_add1_to_CA_list(SSL_CTX ctx, const* X509 *x);
1943	__owur const STACK_OF(X509_NAME) SSL_get0_peer_CA_list(const* SSL *s);
1944
1945	void SSL_set_client_CA_list(SSL s, STACK_OF(X509_NAME) name_list);
1946	void SSL_CTX_set_client_CA_list(SSL_CTX ctx, STACK_OF(X509_NAME) name_list);
1947	__owur STACK_OF(X509_NAME) SSL_get_client_CA_list(const* SSL *s);
1948	__owur STACK_OF(X509_NAME) SSL_CTX_get_client_CA_list(const* SSL_CTX *s);
1949	__owur int SSL_add_client_CA(SSL ssl, X509 x);
1950	__owur int SSL_CTX_add_client_CA(SSL_CTX ctx, X509 x);
1951
1952	void SSL_set_connect_state(SSL *s);
1953	void SSL_set_accept_state(SSL *s);
1954
1955	__owur long SSL_get_default_timeout(const SSL *s);
1956
1957	# if OPENSSL_API_COMPAT < 0x10100000L
1958	# define SSL_library_init() OPENSSL_init_ssl(0, NULL)
1959	# endif
1960
1961	__owur char SSL_CIPHER_description(const* SSL_CIPHER , char* buf, int* size);
1962	__owur STACK_OF(X509_NAME) SSL_dup_CA_list(const* STACK_OF(X509_NAME) *sk);
1963
1964	__owur SSL SSL_dup(SSL ssl);
1965
1966	__owur X509 SSL_get_certificate(const* SSL *ssl);
1967	/*
1968	* EVP_PKEY
1969	*/
1970	struct evp_pkey_st SSL_get_privatekey(const* SSL *ssl);
1971
1972	__owur X509 SSL_CTX_get0_certificate(const* SSL_CTX *ctx);
1973	__owur EVP_PKEY SSL_CTX_get0_privatekey(const* SSL_CTX *ctx);
1974
1975	void SSL_CTX_set_quiet_shutdown(SSL_CTX ctx, int* mode);
1976	__owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
1977	void SSL_set_quiet_shutdown(SSL ssl, int* mode);
1978	__owur int SSL_get_quiet_shutdown(const SSL *ssl);
1979	void SSL_set_shutdown(SSL ssl, int* mode);
1980	__owur int SSL_get_shutdown(const SSL *ssl);
1981	__owur int SSL_version(const SSL *ssl);
1982	__owur int SSL_client_version(const SSL *s);
1983	__owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
1984	__owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
1985	__owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
1986	__owur int SSL_CTX_load_verify_locations(SSL_CTX ctx, const* char *CAfile,
1987	const char *CApath);
1988	# define SSL_get0_session SSL_get_session/* just peek at pointer */
1989	__owur SSL_SESSION SSL_get_session(const* SSL *ssl);
1990	__owur SSL_SESSION SSL_get1_session(SSL ssl); / obtain a reference count /
1991	__owur SSL_CTX SSL_get_SSL_CTX(const* SSL *ssl);
1992	SSL_CTX SSL_set_SSL_CTX(SSL ssl, SSL_CTX *ctx);
1993	void SSL_set_info_callback(SSL *ssl,
1994	void (cb) (const* SSL ssl, int* type, int val));
1995	void (SSL_get_info_callback(const* SSL ssl)) (const* SSL ssl, int* type,
1996	int val);
1997	__owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
1998
1999	void SSL_set_verify_result(SSL ssl, long* v);
2000	__owur long SSL_get_verify_result(const SSL *ssl);
2001	__owur STACK_OF(X509) SSL_get0_verified_chain(const* SSL *s);
2002
2003	__owur size_t SSL_get_client_random(const SSL ssl, unsigned* char *out,
2004	size_t outlen);
2005	__owur size_t SSL_get_server_random(const SSL ssl, unsigned* char *out,
2006	size_t outlen);
2007	__owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *sess,
2008	unsigned char *out, size_t outlen);
2009	__owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
2010	const unsigned char *in, size_t len);
2011	uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *sess);
2012
2013	#define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
2014	CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
2015	__owur int SSL_set_ex_data(SSL ssl, int* idx, void *data);
2016	void SSL_get_ex_data(const* SSL ssl, int* idx);
2017	#define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
2018	CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
2019	__owur int SSL_SESSION_set_ex_data(SSL_SESSION ss, int* idx, void *data);
2020	void SSL_SESSION_get_ex_data(const* SSL_SESSION ss, int* idx);
2021	#define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
2022	CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
2023	__owur int SSL_CTX_set_ex_data(SSL_CTX ssl, int* idx, void *data);
2024	void SSL_CTX_get_ex_data(const* SSL_CTX ssl, int* idx);
2025
2026	__owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
2027
2028	# define SSL_CTX_sess_set_cache_size(ctx,t) \
2029	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
2030	# define SSL_CTX_sess_get_cache_size(ctx) \
2031	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
2032	# define SSL_CTX_set_session_cache_mode(ctx,m) \
2033	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
2034	# define SSL_CTX_get_session_cache_mode(ctx) \
2035	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)
2036
2037	# define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
2038	# define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
2039	# define SSL_CTX_get_read_ahead(ctx) \
2040	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
2041	# define SSL_CTX_set_read_ahead(ctx,m) \
2042	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
2043	# define SSL_CTX_get_max_cert_list(ctx) \
2044	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2045	# define SSL_CTX_set_max_cert_list(ctx,m) \
2046	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2047	# define SSL_get_max_cert_list(ssl) \
2048	SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
2049	# define SSL_set_max_cert_list(ssl,m) \
2050	SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
2051
2052	# define SSL_CTX_set_max_send_fragment(ctx,m) \
2053	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2054	# define SSL_set_max_send_fragment(ssl,m) \
2055	SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
2056	# define SSL_CTX_set_split_send_fragment(ctx,m) \
2057	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2058	# define SSL_set_split_send_fragment(ssl,m) \
2059	SSL_ctrl(ssl,SSL_CTRL_SET_SPLIT_SEND_FRAGMENT,m,NULL)
2060	# define SSL_CTX_set_max_pipelines(ctx,m) \
2061	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2062	# define SSL_set_max_pipelines(ssl,m) \
2063	SSL_ctrl(ssl,SSL_CTRL_SET_MAX_PIPELINES,m,NULL)
2064
2065	void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
2066	void SSL_set_default_read_buffer_len(SSL *s, size_t len);
2067
2068	# ifndef OPENSSL_NO_DH
2069	/ NB: the \|keylength\| is only applicable when is_export is true /
2070	void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
2071	DH (dh) (SSL ssl, int* is_export,
2072	int keylength));
2073	void SSL_set_tmp_dh_callback(SSL *ssl,
2074	DH (dh) (SSL ssl, int* is_export,
2075	int keylength));
2076	# endif
2077
2078	__owur const COMP_METHOD SSL_get_current_compression(const* SSL *s);
2079	__owur const COMP_METHOD SSL_get_current_expansion(const* SSL *s);
2080	__owur const char SSL_COMP_get_name(const* COMP_METHOD *comp);
2081	__owur const char SSL_COMP_get0_name(const* SSL_COMP *comp);
2082	__owur int SSL_COMP_get_id(const SSL_COMP *comp);
2083	STACK_OF(SSL_COMP) SSL_COMP_get_compression_methods(void*);
2084	__owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
2085	*meths);
2086	# if OPENSSL_API_COMPAT < 0x10100000L
2087	# define SSL_COMP_free_compression_methods() while(0) continue
2088	# endif
2089	__owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
2090
2091	const SSL_CIPHER SSL_CIPHER_find(SSL ssl, const unsigned char *ptr);
2092	int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
2093	int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
2094	int SSL_bytes_to_cipher_list(SSL s, const* unsigned char *bytes, size_t len,
2095	int isv2format, STACK_OF(SSL_CIPHER) **sk,
2096	STACK_OF(SSL_CIPHER) **scsvs);
2097
2098	/ TLS extensions functions /
2099	__owur int SSL_set_session_ticket_ext(SSL s, void* ext_data, int* ext_len);
2100
2101	__owur int SSL_set_session_ticket_ext_cb(SSL *s,
2102	tls_session_ticket_ext_cb_fn cb,
2103	void *arg);
2104
2105	/ Pre-shared secret session resumption functions /
2106	__owur int SSL_set_session_secret_cb(SSL *s,
2107	tls_session_secret_cb_fn session_secret_cb,
2108	void *arg);
2109
2110	void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
2111	int (cb) (SSL ssl,
2112	int
2113	is_forward_secure));
2114
2115	void SSL_set_not_resumable_session_callback(SSL *ssl,
2116	int (cb) (SSL ssl,
2117	int is_forward_secure));
2118
2119	void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
2120	size_t (cb) (SSL ssl, int type,
2121	size_t len, void *arg));
2122	void SSL_CTX_set_record_padding_callback_arg(SSL_CTX ctx, void* *arg);
2123	void SSL_CTX_get_record_padding_callback_arg(const* SSL_CTX *ctx);
2124	int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
2125
2126	void SSL_set_record_padding_callback(SSL *ssl,
2127	size_t (cb) (SSL ssl, int type,
2128	size_t len, void *arg));
2129	void SSL_set_record_padding_callback_arg(SSL ssl, void* *arg);
2130	void SSL_get_record_padding_callback_arg(const* SSL *ssl);
2131	int SSL_set_block_padding(SSL *ssl, size_t block_size);
2132
2133	int SSL_set_num_tickets(SSL *s, size_t num_tickets);
2134	size_t SSL_get_num_tickets(const SSL *s);
2135	int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
2136	size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx);
2137
2138	# if OPENSSL_API_COMPAT < 0x10100000L
2139	# define SSL_cache_hit(s) SSL_session_reused(s)
2140	# endif
2141
2142	__owur int SSL_session_reused(const SSL *s);
2143	__owur int SSL_is_server(const SSL *s);
2144
2145	__owur __owur SSL_CONF_CTX SSL_CONF_CTX_new(void*);
2146	int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
2147	void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
2148	unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX cctx, unsigned* int flags);
2149	__owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx,
2150	unsigned int flags);
2151	__owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX cctx, const* char *pre);
2152
2153	void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX cctx, SSL ssl);
2154	void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX cctx, SSL_CTX ctx);
2155
2156	__owur int SSL_CONF_cmd(SSL_CONF_CTX cctx, const* char cmd, const* char *value);
2157	__owur int SSL_CONF_cmd_argv(SSL_CONF_CTX cctx, int* pargc, char* ***pargv);
2158	__owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX cctx, const* char *cmd);
2159
2160	void SSL_add_ssl_module(void);
2161	int SSL_config(SSL s, const* char *name);
2162	int SSL_CTX_config(SSL_CTX ctx, const* char *name);
2163
2164	# ifndef OPENSSL_NO_SSL_TRACE
2165	void SSL_trace(int write_p, int version, int content_type,
2166	const void buf, size_t len, SSL ssl, void *arg);
2167	# endif
2168
2169	# ifndef OPENSSL_NO_SOCK
2170	int DTLSv1_listen(SSL s, BIO_ADDR client);
2171	# endif
2172
2173	# ifndef OPENSSL_NO_CT
2174
2175	/*
2176	* A callback for verifying that the received SCTs are sufficient.
2177	* Expected to return 1 if they are sufficient, otherwise 0.
2178	* May return a negative integer if an error occurs.
2179	* A connection should be aborted if the SCTs are deemed insufficient.
2180	*/
2181	typedef int (ssl_ct_validation_cb)(const* CT_POLICY_EVAL_CTX *ctx,
2182	const STACK_OF(SCT) scts, void* *arg);
2183
2184	/*
2185	* Sets a \|callback\| that is invoked upon receipt of ServerHelloDone to validate
2186	* the received SCTs.
2187	* If the callback returns a non-positive result, the connection is terminated.
2188	* Call this function before beginning a handshake.
2189	* If a NULL \|callback\| is provided, SCT validation is disabled.
2190	* \|arg\| is arbitrary userdata that will be passed to the callback whenever it
2191	* is invoked. Ownership of \|arg\| remains with the caller.
2192	*
2193	* NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
2194	* will be requested.
2195	*/
2196	int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
2197	void *arg);
2198	int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
2199	ssl_ct_validation_cb callback,
2200	void *arg);
2201	#define SSL_disable_ct(s) \
2202	((void) SSL_set_validation_callback((s), NULL, NULL))
2203	#define SSL_CTX_disable_ct(ctx) \
2204	((void) SSL_CTX_set_validation_callback((ctx), NULL, NULL))
2205
2206	/*
2207	* The validation type enumerates the available behaviours of the built-in SSL
2208	* CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
2209	* The underlying callback is a static function in libssl.
2210	*/
2211	enum {
2212	SSL_CT_VALIDATION_PERMISSIVE = `0`,
2213	SSL_CT_VALIDATION_STRICT
2214	};
2215
2216	/*
2217	* Enable CT by setting up a callback that implements one of the built-in
2218	* validation variants. The SSL_CT_VALIDATION_PERMISSIVE variant always
2219	* continues the handshake, the application can make appropriate decisions at
2220	* handshake completion. The SSL_CT_VALIDATION_STRICT variant requires at
2221	* least one valid SCT, or else handshake termination will be requested. The
2222	* handshake may continue anyway if SSL_VERIFY_NONE is in effect.
2223	*/
2224	int SSL_enable_ct(SSL s, int* validation_mode);
2225	int SSL_CTX_enable_ct(SSL_CTX ctx, int* validation_mode);
2226
2227	/*
2228	* Report whether a non-NULL callback is enabled.
2229	*/
2230	int SSL_ct_is_enabled(const SSL *s);
2231	int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
2232
2233	/ Gets the SCTs received from a connection /
2234	const STACK_OF(SCT) SSL_get0_peer_scts(SSL s);
2235
2236	/*
2237	* Loads the CT log list from the default location.
2238	* If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2239	* the log information loaded from this file will be appended to the
2240	* CTLOG_STORE.
2241	* Returns 1 on success, 0 otherwise.
2242	*/
2243	int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
2244
2245	/*
2246	* Loads the CT log list from the specified file path.
2247	* If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
2248	* the log information loaded from this file will be appended to the
2249	* CTLOG_STORE.
2250	* Returns 1 on success, 0 otherwise.
2251	*/
2252	int SSL_CTX_set_ctlog_list_file(SSL_CTX ctx, const* char *path);
2253
2254	/*
2255	* Sets the CT log list used by all SSL connections created from this SSL_CTX.
2256	* Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
2257	*/
2258	void SSL_CTX_set0_ctlog_store(SSL_CTX ctx, CTLOG_STORE logs);
2259
2260	/*
2261	* Gets the CT log list used by all SSL connections created from this SSL_CTX.
2262	* This will be NULL unless one of the following functions has been called:
2263	* - SSL_CTX_set_default_ctlog_list_file
2264	* - SSL_CTX_set_ctlog_list_file
2265	* - SSL_CTX_set_ctlog_store
2266	*/
2267	const CTLOG_STORE SSL_CTX_get0_ctlog_store(const* SSL_CTX *ctx);
2268
2269	# endif /* OPENSSL_NO_CT */
2270
2271	/ What the "other" parameter contains in security callback /
2272	/ Mask for type /
2273	# define SSL_SECOP_OTHER_TYPE 0xffff0000
2274	# define SSL_SECOP_OTHER_NONE 0
2275	# define SSL_SECOP_OTHER_CIPHER (1 << 16)
2276	# define SSL_SECOP_OTHER_CURVE (2 << 16)
2277	# define SSL_SECOP_OTHER_DH (3 << 16)
2278	# define SSL_SECOP_OTHER_PKEY (4 << 16)
2279	# define SSL_SECOP_OTHER_SIGALG (5 << 16)
2280	# define SSL_SECOP_OTHER_CERT (6 << 16)
2281
2282	/ Indicated operation refers to peer key or certificate /
2283	# define SSL_SECOP_PEER 0x1000
2284
2285	/ Values for "op" parameter in security callback /
2286
2287	/ Called to filter ciphers /
2288	/ Ciphers client supports /
2289	# define SSL_SECOP_CIPHER_SUPPORTED (1 \| SSL_SECOP_OTHER_CIPHER)
2290	/ Cipher shared by client/server /
2291	# define SSL_SECOP_CIPHER_SHARED (2 \| SSL_SECOP_OTHER_CIPHER)
2292	/ Sanity check of cipher server selects /
2293	# define SSL_SECOP_CIPHER_CHECK (3 \| SSL_SECOP_OTHER_CIPHER)
2294	/ Curves supported by client /
2295	# define SSL_SECOP_CURVE_SUPPORTED (4 \| SSL_SECOP_OTHER_CURVE)
2296	/ Curves shared by client/server /
2297	# define SSL_SECOP_CURVE_SHARED (5 \| SSL_SECOP_OTHER_CURVE)
2298	/ Sanity check of curve server selects /
2299	# define SSL_SECOP_CURVE_CHECK (6 \| SSL_SECOP_OTHER_CURVE)
2300	/ Temporary DH key /
2301	# define SSL_SECOP_TMP_DH (7 \| SSL_SECOP_OTHER_PKEY)
2302	/ SSL/TLS version /
2303	# define SSL_SECOP_VERSION (9 \| SSL_SECOP_OTHER_NONE)
2304	/ Session tickets /
2305	# define SSL_SECOP_TICKET (10 \| SSL_SECOP_OTHER_NONE)
2306	/ Supported signature algorithms sent to peer /
2307	# define SSL_SECOP_SIGALG_SUPPORTED (11 \| SSL_SECOP_OTHER_SIGALG)
2308	/ Shared signature algorithm /
2309	# define SSL_SECOP_SIGALG_SHARED (12 \| SSL_SECOP_OTHER_SIGALG)
2310	/ Sanity check signature algorithm allowed /
2311	# define SSL_SECOP_SIGALG_CHECK (13 \| SSL_SECOP_OTHER_SIGALG)
2312	/ Used to get mask of supported public key signature algorithms /
2313	# define SSL_SECOP_SIGALG_MASK (14 \| SSL_SECOP_OTHER_SIGALG)
2314	/ Use to see if compression is allowed /
2315	# define SSL_SECOP_COMPRESSION (15 \| SSL_SECOP_OTHER_NONE)
2316	/ EE key in certificate /
2317	# define SSL_SECOP_EE_KEY (16 \| SSL_SECOP_OTHER_CERT)
2318	/ CA key in certificate /
2319	# define SSL_SECOP_CA_KEY (17 \| SSL_SECOP_OTHER_CERT)
2320	/ CA digest algorithm in certificate /
2321	# define SSL_SECOP_CA_MD (18 \| SSL_SECOP_OTHER_CERT)
2322	/ Peer EE key in certificate /
2323	# define SSL_SECOP_PEER_EE_KEY (SSL_SECOP_EE_KEY \| SSL_SECOP_PEER)
2324	/ Peer CA key in certificate /
2325	# define SSL_SECOP_PEER_CA_KEY (SSL_SECOP_CA_KEY \| SSL_SECOP_PEER)
2326	/ Peer CA digest algorithm in certificate /
2327	# define SSL_SECOP_PEER_CA_MD (SSL_SECOP_CA_MD \| SSL_SECOP_PEER)
2328
2329	void SSL_set_security_level(SSL s, int* level);
2330	__owur int SSL_get_security_level(const SSL *s);
2331	void SSL_set_security_callback(SSL *s,
2332	int (cb) (const* SSL s, const* SSL_CTX *ctx,
2333	int op, int bits, int nid,
2334	void other, void* *ex));
2335	int (SSL_get_security_callback(const* SSL s)) (const* SSL *s,
2336	const SSL_CTX ctx, int* op,
2337	int bits, int nid, void *other,
2338	void *ex);
2339	void SSL_set0_security_ex_data(SSL s, void* *ex);
2340	__owur void SSL_get0_security_ex_data(const* SSL *s);
2341
2342	void SSL_CTX_set_security_level(SSL_CTX ctx, int* level);
2343	__owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
2344	void SSL_CTX_set_security_callback(SSL_CTX *ctx,
2345	int (cb) (const* SSL s, const* SSL_CTX *ctx,
2346	int op, int bits, int nid,
2347	void other, void* *ex));
2348	int (SSL_CTX_get_security_callback(const* SSL_CTX ctx)) (const* SSL *s,
2349	const SSL_CTX *ctx,
2350	int op, int bits,
2351	int nid,
2352	void *other,
2353	void *ex);
2354	void SSL_CTX_set0_security_ex_data(SSL_CTX ctx, void* *ex);
2355	__owur void SSL_CTX_get0_security_ex_data(const* SSL_CTX *ctx);
2356
2357	/ OPENSSL_INIT flag 0x010000 reserved for internal use /
2358	# define OPENSSL_INIT_NO_LOAD_SSL_STRINGS 0x00100000L
2359	# define OPENSSL_INIT_LOAD_SSL_STRINGS 0x00200000L
2360
2361	# define OPENSSL_INIT_SSL_DEFAULT \
2362	(OPENSSL_INIT_LOAD_SSL_STRINGS \| OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
2363
2364	int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
2365
2366	# ifndef OPENSSL_NO_UNIT_TEST
2367	__owur const struct openssl_ssl_test_functions SSL_test_functions(void*);
2368	# endif
2369
2370	__owur int SSL_free_buffers(SSL *ssl);
2371	__owur int SSL_alloc_buffers(SSL *ssl);
2372
2373	/ Status codes passed to the decrypt session ticket callback. Some of these*
2374	* are for internal use only and are never passed to the callback. */
2375	typedef int SSL_TICKET_STATUS;
2376
2377	/ Support for ticket appdata /
2378	/ fatal error, malloc failure /
2379	# define SSL_TICKET_FATAL_ERR_MALLOC 0
2380	/ fatal error, either from parsing or decrypting the ticket /
2381	# define SSL_TICKET_FATAL_ERR_OTHER 1
2382	/ No ticket present /
2383	# define SSL_TICKET_NONE 2
2384	/ Empty ticket present /
2385	# define SSL_TICKET_EMPTY 3
2386	/ the ticket couldn't be decrypted /
2387	# define SSL_TICKET_NO_DECRYPT 4
2388	/ a ticket was successfully decrypted /
2389	# define SSL_TICKET_SUCCESS 5
2390	/ same as above but the ticket needs to be renewed /
2391	# define SSL_TICKET_SUCCESS_RENEW 6
2392
2393	/ Return codes for the decrypt session ticket callback /
2394	typedef int SSL_TICKET_RETURN;
2395
2396	/ An error occurred /
2397	#define SSL_TICKET_RETURN_ABORT 0
2398	/ Do not use the ticket, do not send a renewed ticket to the client /
2399	#define SSL_TICKET_RETURN_IGNORE 1
2400	/ Do not use the ticket, send a renewed ticket to the client /
2401	#define SSL_TICKET_RETURN_IGNORE_RENEW 2
2402	/ Use the ticket, do not send a renewed ticket to the client /
2403	#define SSL_TICKET_RETURN_USE 3
2404	/ Use the ticket, send a renewed ticket to the client /
2405	#define SSL_TICKET_RETURN_USE_RENEW 4
2406
2407	typedef int (SSL_CTX_generate_session_ticket_fn)(SSL s, void *arg);
2408	typedef SSL_TICKET_RETURN (SSL_CTX_decrypt_session_ticket_fn)(SSL s, SSL_SESSION *ss,
2409	const unsigned char *keyname,
2410	size_t keyname_length,
2411	SSL_TICKET_STATUS status,
2412	void *arg);
2413	int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
2414	SSL_CTX_generate_session_ticket_fn gen_cb,
2415	SSL_CTX_decrypt_session_ticket_fn dec_cb,
2416	void *arg);
2417	int SSL_SESSION_set1_ticket_appdata(SSL_SESSION ss, const* void *data, size_t len);
2418	int SSL_SESSION_get0_ticket_appdata(SSL_SESSION ss, void* *data, size_t len);
2419
2420	extern const char SSL_version_str[];
2421
2422	typedef unsigned int (DTLS_timer_cb)(SSL s, unsigned int timer_us);
2423
2424	void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);
2425
2426
2427	typedef int (SSL_allow_early_data_cb_fn)(SSL s, void *arg);
2428	void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
2429	SSL_allow_early_data_cb_fn cb,
2430	void *arg);
2431	void SSL_set_allow_early_data_cb(SSL *s,
2432	SSL_allow_early_data_cb_fn cb,
2433	void *arg);
2434
2435	# ifdef __cplusplus
2436	}
2437	# endif
2438	#endif
2439

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