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The C and C++ Include Header Files

cat -n /usr/include/openssl/ssl.h

     1	/*
     2	 * WARNING: do not edit!
     3	 * Generated by Makefile from ../include/openssl/ssl.h.in
     4	 *
     5	 * Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
     6	 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
     7	 * Copyright 2005 Nokia. All rights reserved.
     8	 *
     9	 * Licensed under the Apache License 2.0 (the "License").  You may not use
    10	 * this file except in compliance with the License.  You can obtain a copy
    11	 * in the file LICENSE in the source distribution or at
    12	 * https://www.openssl.org/source/license.html
    13	 */
    14	
    15	/* clang-format off */
    16	
    17	/* clang-format on */
    18	
    19	#ifndef OPENSSL_SSL_H
    20	#define OPENSSL_SSL_H
    21	#pragma once
    22	
    23	#include <openssl/macros.h>
    24	#ifndef OPENSSL_NO_DEPRECATED_3_0
    25	#define HEADER_SSL_H
    26	#endif
    27	
    28	#include <openssl/e_os2.h>
    29	#include <openssl/e_ostime.h>
    30	#include <openssl/opensslconf.h>
    31	#include <openssl/comp.h>
    32	#include <openssl/bio.h>
    33	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
    34	#include <openssl/x509.h>
    35	#include <openssl/crypto.h>
    36	#include <openssl/buffer.h>
    37	#endif
    38	#include <openssl/lhash.h>
    39	#include <openssl/pem.h>
    40	#include <openssl/hmac.h>
    41	#include <openssl/async.h>
    42	
    43	#include <openssl/safestack.h>
    44	#include <openssl/symhacks.h>
    45	#include <openssl/ct.h>
    46	#include <openssl/sslerr.h>
    47	#include <openssl/prov_ssl.h>
    48	#ifndef OPENSSL_NO_STDIO
    49	#include <stdio.h>
    50	#endif
    51	
    52	#ifdef __cplusplus
    53	extern "C" {
    54	#endif
    55	
    56	/* OpenSSL version number for ASN.1 encoding of the session information */
    57	/*-
    58	 * Version 0 - initial version
    59	 * Version 1 - added the optional peer certificate
    60	 */
    61	#define SSL_SESSION_ASN1_VERSION 0x0001
    62	
    63	#define SSL_MAX_SSL_SESSION_ID_LENGTH 32
    64	#define SSL_MAX_SID_CTX_LENGTH 32
    65	
    66	#define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES (512 / 8)
    67	#define SSL_MAX_KEY_ARG_LENGTH 8
    68	/* SSL_MAX_MASTER_KEY_LENGTH is defined in prov_ssl.h */
    69	
    70	/* The maximum number of encrypt/decrypt pipelines we can support */
    71	#define SSL_MAX_PIPELINES 32
    72	
    73	/* text strings for the ciphers */
    74	
    75	/* These are used to specify which ciphers to use and not to use */
    76	
    77	#define SSL_TXT_LOW "LOW"
    78	#define SSL_TXT_MEDIUM "MEDIUM"
    79	#define SSL_TXT_HIGH "HIGH"
    80	#define SSL_TXT_FIPS "FIPS"
    81	
    82	#define SSL_TXT_aNULL "aNULL"
    83	#define SSL_TXT_eNULL "eNULL"
    84	#define SSL_TXT_NULL "NULL"
    85	
    86	#define SSL_TXT_kRSA "kRSA"
    87	#define SSL_TXT_kDHr "kDHr" /* this cipher class has been removed */
    88	#define SSL_TXT_kDHd "kDHd" /* this cipher class has been removed */
    89	#define SSL_TXT_kDH "kDH" /* this cipher class has been removed */
    90	#define SSL_TXT_kEDH "kEDH" /* alias for kDHE */
    91	#define SSL_TXT_kDHE "kDHE"
    92	#define SSL_TXT_kECDHr "kECDHr" /* this cipher class has been removed */
    93	#define SSL_TXT_kECDHe "kECDHe" /* this cipher class has been removed */
    94	#define SSL_TXT_kECDH "kECDH" /* this cipher class has been removed */
    95	#define SSL_TXT_kEECDH "kEECDH" /* alias for kECDHE */
    96	#define SSL_TXT_kECDHE "kECDHE"
    97	#define SSL_TXT_kPSK "kPSK"
    98	#define SSL_TXT_kRSAPSK "kRSAPSK"
    99	#define SSL_TXT_kECDHEPSK "kECDHEPSK"
   100	#define SSL_TXT_kDHEPSK "kDHEPSK"
   101	#define SSL_TXT_kGOST "kGOST"
   102	#define SSL_TXT_kGOST18 "kGOST18"
   103	#define SSL_TXT_kSRP "kSRP"
   104	
   105	#define SSL_TXT_aRSA "aRSA"
   106	#define SSL_TXT_aDSS "aDSS"
   107	#define SSL_TXT_aDH "aDH" /* this cipher class has been removed */
   108	#define SSL_TXT_aECDH "aECDH" /* this cipher class has been removed */
   109	#define SSL_TXT_aECDSA "aECDSA"
   110	#define SSL_TXT_aPSK "aPSK"
   111	#define SSL_TXT_aGOST94 "aGOST94"
   112	#define SSL_TXT_aGOST01 "aGOST01"
   113	#define SSL_TXT_aGOST12 "aGOST12"
   114	#define SSL_TXT_aGOST "aGOST"
   115	#define SSL_TXT_aSRP "aSRP"
   116	
   117	#define SSL_TXT_DSS "DSS"
   118	#define SSL_TXT_DH "DH"
   119	#define SSL_TXT_DHE "DHE" /* same as "kDHE:-ADH" */
   120	#define SSL_TXT_EDH "EDH" /* alias for DHE */
   121	#define SSL_TXT_ADH "ADH"
   122	#define SSL_TXT_RSA "RSA"
   123	#define SSL_TXT_ECDH "ECDH"
   124	#define SSL_TXT_EECDH "EECDH" /* alias for ECDHE" */
   125	#define SSL_TXT_ECDHE "ECDHE" /* same as "kECDHE:-AECDH" */
   126	#define SSL_TXT_AECDH "AECDH"
   127	#define SSL_TXT_ECDSA "ECDSA"
   128	#define SSL_TXT_PSK "PSK"
   129	#define SSL_TXT_SRP "SRP"
   130	
   131	#define SSL_TXT_DES "DES"
   132	#define SSL_TXT_3DES "3DES"
   133	#define SSL_TXT_RC4 "RC4"
   134	#define SSL_TXT_RC2 "RC2"
   135	#define SSL_TXT_IDEA "IDEA"
   136	#define SSL_TXT_SEED "SEED"
   137	#define SSL_TXT_AES128 "AES128"
   138	#define SSL_TXT_AES256 "AES256"
   139	#define SSL_TXT_AES "AES"
   140	#define SSL_TXT_AES_GCM "AESGCM"
   141	#define SSL_TXT_AES_CCM "AESCCM"
   142	#define SSL_TXT_AES_CCM_8 "AESCCM8"
   143	#define SSL_TXT_CAMELLIA128 "CAMELLIA128"
   144	#define SSL_TXT_CAMELLIA256 "CAMELLIA256"
   145	#define SSL_TXT_CAMELLIA "CAMELLIA"
   146	#define SSL_TXT_CHACHA20 "CHACHA20"
   147	#define SSL_TXT_GOST "GOST89"
   148	#define SSL_TXT_ARIA "ARIA"
   149	#define SSL_TXT_ARIA_GCM "ARIAGCM"
   150	#define SSL_TXT_ARIA128 "ARIA128"
   151	#define SSL_TXT_ARIA256 "ARIA256"
   152	#define SSL_TXT_GOST2012_GOST8912_GOST8912 "GOST2012-GOST8912-GOST8912"
   153	#define SSL_TXT_CBC "CBC"
   154	
   155	#define SSL_TXT_MD5 "MD5"
   156	#define SSL_TXT_SHA1 "SHA1"
   157	#define SSL_TXT_SHA "SHA" /* same as "SHA1" */
   158	#define SSL_TXT_GOST94 "GOST94"
   159	#define SSL_TXT_GOST89MAC "GOST89MAC"
   160	#define SSL_TXT_GOST12 "GOST12"
   161	#define SSL_TXT_GOST89MAC12 "GOST89MAC12"
   162	#define SSL_TXT_SHA256 "SHA256"
   163	#define SSL_TXT_SHA384 "SHA384"
   164	
   165	#define SSL_TXT_SSLV3 "SSLv3"
   166	#define SSL_TXT_TLSV1 "TLSv1"
   167	#define SSL_TXT_TLSV1_1 "TLSv1.1"
   168	#define SSL_TXT_TLSV1_2 "TLSv1.2"
   169	
   170	#define SSL_TXT_ALL "ALL"
   171	
   172	/*-
   173	 * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
   174	 * ciphers normally not being used.
   175	 * Example: "RC4" will activate all ciphers using RC4 including ciphers
   176	 * without authentication, which would normally disabled by DEFAULT (due
   177	 * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
   178	 * will make sure that it is also disabled in the specific selection.
   179	 * COMPLEMENTOF* identifiers are portable between version, as adjustments
   180	 * to the default cipher setup will also be included here.
   181	 *
   182	 * COMPLEMENTOFDEFAULT does not experience the same special treatment that
   183	 * DEFAULT gets, as only selection is being done and no sorting as needed
   184	 * for DEFAULT.
   185	 */
   186	#define SSL_TXT_CMPALL "COMPLEMENTOFALL"
   187	#define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
   188	
   189	/*
   190	 * The following cipher list is used by default. It also is substituted when
   191	 * an application-defined cipher list string starts with 'DEFAULT'.
   192	 * This applies to ciphersuites for TLSv1.2 and below.
   193	 * DEPRECATED IN 3.0.0, in favor of OSSL_default_cipher_list()
   194	 * Update both macro and function simultaneously
   195	 */
   196	#ifndef OPENSSL_NO_DEPRECATED_3_0
   197	#define SSL_DEFAULT_CIPHER_LIST "ALL:!COMPLEMENTOFDEFAULT:!eNULL"
   198	/*
   199	 * This is the default set of TLSv1.3 ciphersuites
   200	 * DEPRECATED IN 3.0.0, in favor of OSSL_default_ciphersuites()
   201	 * Update both macro and function simultaneously
   202	 */
   203	#define TLS_DEFAULT_CIPHERSUITES "TLS_AES_256_GCM_SHA384:"       \
   204	                                 "TLS_CHACHA20_POLY1305_SHA256:" \
   205	                                 "TLS_AES_128_GCM_SHA256"
   206	#endif
   207	/*
   208	 * As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
   209	 * starts with a reasonable order, and all we have to do for DEFAULT is
   210	 * throwing out anonymous and unencrypted ciphersuites! (The latter are not
   211	 * actually enabled by ALL, but "ALL:RSA" would enable some of them.)
   212	 */
   213	
   214	/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
   215	#define SSL_SENT_SHUTDOWN 1
   216	#define SSL_RECEIVED_SHUTDOWN 2
   217	
   218	#ifdef __cplusplus
   219	}
   220	#endif
   221	
   222	#ifdef __cplusplus
   223	extern "C" {
   224	#endif
   225	
   226	#define SSL_FILETYPE_ASN1 X509_FILETYPE_ASN1
   227	#define SSL_FILETYPE_PEM X509_FILETYPE_PEM
   228	
   229	/*
   230	 * This is needed to stop compilers complaining about the 'struct ssl_st *'
   231	 * function parameters used to prototype callbacks in SSL_CTX.
   232	 */
   233	typedef struct ssl_st *ssl_crock_st;
   234	typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;
   235	typedef struct ssl_method_st SSL_METHOD;
   236	typedef struct ssl_cipher_st SSL_CIPHER;
   237	typedef struct ssl_session_st SSL_SESSION;
   238	typedef struct tls_sigalgs_st TLS_SIGALGS;
   239	typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
   240	
   241	STACK_OF(SSL_CIPHER);
   242	
   243	/* SRTP protection profiles for use with the use_srtp extension (RFC 5764)*/
   244	typedef struct srtp_protection_profile_st {
   245	    const char *name;
   246	    unsigned long id;
   247	} SRTP_PROTECTION_PROFILE;
   248	/* clang-format off */
   249	SKM_DEFINE_STACK_OF_INTERNAL(SRTP_PROTECTION_PROFILE, SRTP_PROTECTION_PROFILE, SRTP_PROTECTION_PROFILE)
   250	#define sk_SRTP_PROTECTION_PROFILE_num(sk) OPENSSL_sk_num(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk))
   251	#define sk_SRTP_PROTECTION_PROFILE_value(sk, idx) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_value(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk), (idx)))
   252	#define sk_SRTP_PROTECTION_PROFILE_new(cmp) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new(ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp)))
   253	#define sk_SRTP_PROTECTION_PROFILE_new_null() ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new_null())
   254	#define sk_SRTP_PROTECTION_PROFILE_new_reserve(cmp, n) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_new_reserve(ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp), (n)))
   255	#define sk_SRTP_PROTECTION_PROFILE_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (n))
   256	#define sk_SRTP_PROTECTION_PROFILE_free(sk) OPENSSL_sk_free(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
   257	#define sk_SRTP_PROTECTION_PROFILE_zero(sk) OPENSSL_sk_zero(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
   258	#define sk_SRTP_PROTECTION_PROFILE_delete(sk, i) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_delete(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (i)))
   259	#define sk_SRTP_PROTECTION_PROFILE_delete_ptr(sk, ptr) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_delete_ptr(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr)))
   260	#define sk_SRTP_PROTECTION_PROFILE_push(sk, ptr) OPENSSL_sk_push(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
   261	#define sk_SRTP_PROTECTION_PROFILE_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
   262	#define sk_SRTP_PROTECTION_PROFILE_pop(sk) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_pop(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk)))
   263	#define sk_SRTP_PROTECTION_PROFILE_shift(sk) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_shift(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk)))
   264	#define sk_SRTP_PROTECTION_PROFILE_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk),ossl_check_SRTP_PROTECTION_PROFILE_freefunc_type(freefunc))
   265	#define sk_SRTP_PROTECTION_PROFILE_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr), (idx))
   266	#define sk_SRTP_PROTECTION_PROFILE_set(sk, idx, ptr) ((SRTP_PROTECTION_PROFILE *)OPENSSL_sk_set(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), (idx), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr)))
   267	#define sk_SRTP_PROTECTION_PROFILE_find(sk, ptr) OPENSSL_sk_find(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
   268	#define sk_SRTP_PROTECTION_PROFILE_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr))
   269	#define sk_SRTP_PROTECTION_PROFILE_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_type(ptr), pnum)
   270	#define sk_SRTP_PROTECTION_PROFILE_sort(sk) OPENSSL_sk_sort(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk))
   271	#define sk_SRTP_PROTECTION_PROFILE_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk))
   272	#define sk_SRTP_PROTECTION_PROFILE_dup(sk) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_dup(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk)))
   273	#define sk_SRTP_PROTECTION_PROFILE_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SRTP_PROTECTION_PROFILE) *)OPENSSL_sk_deep_copy(ossl_check_const_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_copyfunc_type(copyfunc), ossl_check_SRTP_PROTECTION_PROFILE_freefunc_type(freefunc)))
   274	#define sk_SRTP_PROTECTION_PROFILE_set_cmp_func(sk, cmp) ((sk_SRTP_PROTECTION_PROFILE_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SRTP_PROTECTION_PROFILE_sk_type(sk), ossl_check_SRTP_PROTECTION_PROFILE_compfunc_type(cmp)))
   275	
   276	/* clang-format on */
   277	
   278	typedef int (*tls_session_ticket_ext_cb_fn)(SSL *s, const unsigned char *data,
   279	    int len, void *arg);
   280	typedef int (*tls_session_secret_cb_fn)(SSL *s, void *secret, int *secret_len,
   281	    STACK_OF(SSL_CIPHER) *peer_ciphers,
   282	    const SSL_CIPHER **cipher, void *arg);
   283	
   284	/* Extension context codes */
   285	/* This extension is only allowed in TLS */
   286	#define SSL_EXT_TLS_ONLY 0x00001
   287	/* This extension is only allowed in DTLS */
   288	#define SSL_EXT_DTLS_ONLY 0x00002
   289	/* Some extensions may be allowed in DTLS but we don't implement them for it */
   290	#define SSL_EXT_TLS_IMPLEMENTATION_ONLY 0x00004
   291	/* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
   292	#define SSL_EXT_SSL3_ALLOWED 0x00008
   293	/* Extension is only defined for TLS1.2 and below */
   294	#define SSL_EXT_TLS1_2_AND_BELOW_ONLY 0x00010
   295	/* Extension is only defined for TLS1.3 and above */
   296	#define SSL_EXT_TLS1_3_ONLY 0x00020
   297	/* Ignore this extension during parsing if we are resuming */
   298	#define SSL_EXT_IGNORE_ON_RESUMPTION 0x00040
   299	#define SSL_EXT_CLIENT_HELLO 0x00080
   300	/* Really means TLS1.2 or below */
   301	#define SSL_EXT_TLS1_2_SERVER_HELLO 0x00100
   302	#define SSL_EXT_TLS1_3_SERVER_HELLO 0x00200
   303	#define SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS 0x00400
   304	#define SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST 0x00800
   305	#define SSL_EXT_TLS1_3_CERTIFICATE 0x01000
   306	#define SSL_EXT_TLS1_3_NEW_SESSION_TICKET 0x02000
   307	#define SSL_EXT_TLS1_3_CERTIFICATE_REQUEST 0x04000
   308	#define SSL_EXT_TLS1_3_CERTIFICATE_COMPRESSION 0x08000
   309	/* When sending a raw public key in a certificate message */
   310	#define SSL_EXT_TLS1_3_RAW_PUBLIC_KEY 0x10000
   311	
   312	/* Typedefs for handling custom extensions */
   313	
   314	typedef int (*custom_ext_add_cb)(SSL *s, unsigned int ext_type,
   315	    const unsigned char **out, size_t *outlen,
   316	    int *al, void *add_arg);
   317	
   318	typedef void (*custom_ext_free_cb)(SSL *s, unsigned int ext_type,
   319	    const unsigned char *out, void *add_arg);
   320	
   321	typedef int (*custom_ext_parse_cb)(SSL *s, unsigned int ext_type,
   322	    const unsigned char *in, size_t inlen,
   323	    int *al, void *parse_arg);
   324	
   325	typedef int (*SSL_custom_ext_add_cb_ex)(SSL *s, unsigned int ext_type,
   326	    unsigned int context,
   327	    const unsigned char **out,
   328	    size_t *outlen, X509 *x,
   329	    size_t chainidx,
   330	    int *al, void *add_arg);
   331	
   332	typedef void (*SSL_custom_ext_free_cb_ex)(SSL *s, unsigned int ext_type,
   333	    unsigned int context,
   334	    const unsigned char *out,
   335	    void *add_arg);
   336	
   337	typedef int (*SSL_custom_ext_parse_cb_ex)(SSL *s, unsigned int ext_type,
   338	    unsigned int context,
   339	    const unsigned char *in,
   340	    size_t inlen, X509 *x,
   341	    size_t chainidx,
   342	    int *al, void *parse_arg);
   343	
   344	/* Typedef for verification callback */
   345	typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
   346	
   347	/* Typedef for SSL async callback */
   348	typedef int (*SSL_async_callback_fn)(SSL *s, void *arg);
   349	
   350	#define SSL_OP_BIT(n) ((uint64_t)1 << (uint64_t)n)
   351	
   352	/*
   353	 * SSL/TLS connection options.
   354	 */
   355	/* Disable Extended master secret */
   356	#define SSL_OP_NO_EXTENDED_MASTER_SECRET SSL_OP_BIT(0)
   357	/* Cleanse plaintext copies of data delivered to the application */
   358	#define SSL_OP_CLEANSE_PLAINTEXT SSL_OP_BIT(1)
   359	/* Allow initial connection to servers that don't support RI */
   360	#define SSL_OP_LEGACY_SERVER_CONNECT SSL_OP_BIT(2)
   361	/* Enable support for Kernel TLS */
   362	#define SSL_OP_ENABLE_KTLS SSL_OP_BIT(3)
   363	#define SSL_OP_TLSEXT_PADDING SSL_OP_BIT(4)
   364	#define SSL_OP_SAFARI_ECDHE_ECDSA_BUG SSL_OP_BIT(6)
   365	#define SSL_OP_IGNORE_UNEXPECTED_EOF SSL_OP_BIT(7)
   366	#define SSL_OP_ALLOW_CLIENT_RENEGOTIATION SSL_OP_BIT(8)
   367	#define SSL_OP_DISABLE_TLSEXT_CA_NAMES SSL_OP_BIT(9)
   368	/* In TLSv1.3 allow a non-(ec)dhe based kex_mode */
   369	#define SSL_OP_ALLOW_NO_DHE_KEX SSL_OP_BIT(10)
   370	/*
   371	 * Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
   372	 * in OpenSSL 0.9.6d.  Usually (depending on the application protocol)
   373	 * the workaround is not needed.  Unfortunately some broken SSL/TLS
   374	 * implementations cannot handle it at all, which is why we include it
   375	 * in SSL_OP_ALL. Added in 0.9.6e
   376	 */
   377	#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS SSL_OP_BIT(11)
   378	/* DTLS options */
   379	#define SSL_OP_NO_QUERY_MTU SSL_OP_BIT(12)
   380	/* Turn on Cookie Exchange (on relevant for servers) */
   381	#define SSL_OP_COOKIE_EXCHANGE SSL_OP_BIT(13)
   382	/* Don't use RFC4507 ticket extension */
   383	#define SSL_OP_NO_TICKET SSL_OP_BIT(14)
   384	#ifndef OPENSSL_NO_DTLS1_METHOD
   385	/*
   386	 * Use Cisco's version identifier of DTLS_BAD_VER
   387	 * (only with deprecated DTLSv1_client_method())
   388	 */
   389	#define SSL_OP_CISCO_ANYCONNECT SSL_OP_BIT(15)
   390	#endif
   391	/* As server, disallow session resumption on renegotiation */
   392	#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION SSL_OP_BIT(16)
   393	/* Don't use compression even if supported */
   394	#define SSL_OP_NO_COMPRESSION SSL_OP_BIT(17)
   395	/* Permit unsafe legacy renegotiation */
   396	#define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION SSL_OP_BIT(18)
   397	/* Disable encrypt-then-mac */
   398	#define SSL_OP_NO_ENCRYPT_THEN_MAC SSL_OP_BIT(19)
   399	/*
   400	 * Enable TLSv1.3 Compatibility mode. This is on by default. A future
   401	 * version of OpenSSL may have this disabled by default.
   402	 */
   403	#define SSL_OP_ENABLE_MIDDLEBOX_COMPAT SSL_OP_BIT(20)
   404	/*
   405	 * Prioritize Chacha20Poly1305 when client does.
   406	 * Modifies SSL_OP_CIPHER_SERVER_PREFERENCE
   407	 */
   408	#define SSL_OP_PRIORITIZE_CHACHA SSL_OP_BIT(21)
   409	/*
   410	 * Set on servers to choose the cipher according to server's preferences.
   411	 */
   412	#define SSL_OP_CIPHER_SERVER_PREFERENCE SSL_OP_BIT(22)
   413	/*
   414	 * If set, a server will allow a client to issue an SSLv3.0 version
   415	 * number as latest version supported in the premaster secret, even when
   416	 * TLSv1.0 (version 3.1) was announced in the client hello. Normally
   417	 * this is forbidden to prevent version rollback attacks.
   418	 */
   419	#define SSL_OP_TLS_ROLLBACK_BUG SSL_OP_BIT(23)
   420	/*
   421	 * Switches off automatic TLSv1.3 anti-replay protection for early data.
   422	 * This is a server-side option only (no effect on the client).
   423	 */
   424	#define SSL_OP_NO_ANTI_REPLAY SSL_OP_BIT(24)
   425	#define SSL_OP_NO_SSLv3 SSL_OP_BIT(25)
   426	#define SSL_OP_NO_TLSv1 SSL_OP_BIT(26)
   427	#define SSL_OP_NO_TLSv1_2 SSL_OP_BIT(27)
   428	#define SSL_OP_NO_TLSv1_1 SSL_OP_BIT(28)
   429	#define SSL_OP_NO_TLSv1_3 SSL_OP_BIT(29)
   430	#define SSL_OP_NO_DTLSv1 SSL_OP_BIT(26)
   431	#define SSL_OP_NO_DTLSv1_2 SSL_OP_BIT(27)
   432	/* Disallow all renegotiation */
   433	#define SSL_OP_NO_RENEGOTIATION SSL_OP_BIT(30)
   434	/*
   435	 * Make server add server-hello extension from early version of
   436	 * cryptopro draft, when GOST ciphersuite is negotiated. Required for
   437	 * interoperability with CryptoPro CSP 3.x
   438	 */
   439	#define SSL_OP_CRYPTOPRO_TLSEXT_BUG SSL_OP_BIT(31)
   440	/*
   441	 * Disable RFC8879 certificate compression
   442	 * SSL_OP_NO_TX_CERTIFICATE_COMPRESSION: don't send compressed certificates,
   443	 *     and ignore the extension when received.
   444	 * SSL_OP_NO_RX_CERTIFICATE_COMPRESSION: don't send the extension, and
   445	 *     subsequently indicating that receiving is not supported
   446	 */
   447	#define SSL_OP_NO_TX_CERTIFICATE_COMPRESSION SSL_OP_BIT(32)
   448	#define SSL_OP_NO_RX_CERTIFICATE_COMPRESSION SSL_OP_BIT(33)
   449	/* Enable KTLS TX zerocopy on Linux */
   450	#define SSL_OP_ENABLE_KTLS_TX_ZEROCOPY_SENDFILE SSL_OP_BIT(34)
   451	
   452	#define SSL_OP_PREFER_NO_DHE_KEX SSL_OP_BIT(35)
   453	
   454	/*
   455	 * Option "collections."
   456	 */
   457	#define SSL_OP_NO_SSL_MASK                                 \
   458	    (SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1 | SSL_OP_NO_TLSv1_1 \
   459	        | SSL_OP_NO_TLSv1_2 | SSL_OP_NO_TLSv1_3)
   460	#define SSL_OP_NO_DTLS_MASK \
   461	    (SSL_OP_NO_DTLSv1 | SSL_OP_NO_DTLSv1_2)
   462	
   463	/* Various bug workarounds that should be rather harmless. */
   464	#define SSL_OP_ALL                                                    \
   465	    (SSL_OP_CRYPTOPRO_TLSEXT_BUG | SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS \
   466	        | SSL_OP_TLSEXT_PADDING | SSL_OP_SAFARI_ECDHE_ECDSA_BUG)
   467	
   468	/*
   469	 * OBSOLETE OPTIONS retained for compatibility
   470	 */
   471	
   472	#define SSL_OP_MICROSOFT_SESS_ID_BUG 0x0
   473	#define SSL_OP_NETSCAPE_CHALLENGE_BUG 0x0
   474	#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0x0
   475	#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0x0
   476	#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0x0
   477	#define SSL_OP_MSIE_SSLV2_RSA_PADDING 0x0
   478	#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0x0
   479	#define SSL_OP_TLS_D5_BUG 0x0
   480	#define SSL_OP_TLS_BLOCK_PADDING_BUG 0x0
   481	#define SSL_OP_SINGLE_ECDH_USE 0x0
   482	#define SSL_OP_SINGLE_DH_USE 0x0
   483	#define SSL_OP_EPHEMERAL_RSA 0x0
   484	#define SSL_OP_NO_SSLv2 0x0
   485	#define SSL_OP_PKCS1_CHECK_1 0x0
   486	#define SSL_OP_PKCS1_CHECK_2 0x0
   487	#define SSL_OP_NETSCAPE_CA_DN_BUG 0x0
   488	#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0x0
   489	
   490	/*
   491	 * Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
   492	 * when just a single record has been written):
   493	 */
   494	#define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001U
   495	/*
   496	 * Make it possible to retry SSL_write() with changed buffer location (buffer
   497	 * contents must stay the same!); this is not the default to avoid the
   498	 * misconception that non-blocking SSL_write() behaves like non-blocking
   499	 * write():
   500	 */
   501	#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002U
   502	/*
   503	 * Never bother the application with retries if the transport is blocking:
   504	 */
   505	#define SSL_MODE_AUTO_RETRY 0x00000004U
   506	/* Don't attempt to automatically build certificate chain */
   507	#define SSL_MODE_NO_AUTO_CHAIN 0x00000008U
   508	/*
   509	 * Save RAM by releasing read and write buffers when they're empty. (SSL3 and
   510	 * TLS only.) Released buffers are freed.
   511	 */
   512	#define SSL_MODE_RELEASE_BUFFERS 0x00000010U
   513	/*
   514	 * Send the current time in the Random fields of the ClientHello and
   515	 * ServerHello records for compatibility with hypothetical implementations
   516	 * that require it.
   517	 */
   518	#define SSL_MODE_SEND_CLIENTHELLO_TIME 0x00000020U
   519	#define SSL_MODE_SEND_SERVERHELLO_TIME 0x00000040U
   520	/*
   521	 * Send TLS_FALLBACK_SCSV in the ClientHello. To be set only by applications
   522	 * that reconnect with a downgraded protocol version; see
   523	 * draft-ietf-tls-downgrade-scsv-00 for details. DO NOT ENABLE THIS if your
   524	 * application attempts a normal handshake. Only use this in explicit
   525	 * fallback retries, following the guidance in
   526	 * draft-ietf-tls-downgrade-scsv-00.
   527	 */
   528	#define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080U
   529	/*
   530	 * Support Asynchronous operation
   531	 */
   532	#define SSL_MODE_ASYNC 0x00000100U
   533	
   534	/*
   535	 * When using DTLS/SCTP, include the terminating zero in the label
   536	 * used for computing the endpoint-pair shared secret. Required for
   537	 * interoperability with implementations having this bug like these
   538	 * older version of OpenSSL:
   539	 * - OpenSSL 1.0.0 series
   540	 * - OpenSSL 1.0.1 series
   541	 * - OpenSSL 1.0.2 series
   542	 * - OpenSSL 1.1.0 series
   543	 * - OpenSSL 1.1.1 and 1.1.1a
   544	 */
   545	#define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
   546	
   547	/* Cert related flags */
   548	/*
   549	 * Many implementations ignore some aspects of the TLS standards such as
   550	 * enforcing certificate chain algorithms. When this is set we enforce them.
   551	 */
   552	#define SSL_CERT_FLAG_TLS_STRICT 0x00000001U
   553	
   554	/* Suite B modes, takes same values as certificate verify flags */
   555	#define SSL_CERT_FLAG_SUITEB_128_LOS_ONLY 0x10000
   556	/* Suite B 192 bit only mode */
   557	#define SSL_CERT_FLAG_SUITEB_192_LOS 0x20000
   558	/* Suite B 128 bit mode allowing 192 bit algorithms */
   559	#define SSL_CERT_FLAG_SUITEB_128_LOS 0x30000
   560	
   561	/* Perform all sorts of protocol violations for testing purposes */
   562	#define SSL_CERT_FLAG_BROKEN_PROTOCOL 0x10000000
   563	
   564	/* Flags for building certificate chains */
   565	/* Treat any existing certificates as untrusted CAs */
   566	#define SSL_BUILD_CHAIN_FLAG_UNTRUSTED 0x1
   567	/* Don't include root CA in chain */
   568	#define SSL_BUILD_CHAIN_FLAG_NO_ROOT 0x2
   569	/* Just check certificates already there */
   570	#define SSL_BUILD_CHAIN_FLAG_CHECK 0x4
   571	/* Ignore verification errors */
   572	#define SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR 0x8
   573	/* Clear verification errors from queue */
   574	#define SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR 0x10
   575	
   576	/* Flags returned by SSL_check_chain */
   577	/* Certificate can be used with this session */
   578	#define CERT_PKEY_VALID 0x1
   579	/* Certificate can also be used for signing */
   580	#define CERT_PKEY_SIGN 0x2
   581	/* EE certificate signing algorithm OK */
   582	#define CERT_PKEY_EE_SIGNATURE 0x10
   583	/* CA signature algorithms OK */
   584	#define CERT_PKEY_CA_SIGNATURE 0x20
   585	/* EE certificate parameters OK */
   586	#define CERT_PKEY_EE_PARAM 0x40
   587	/* CA certificate parameters OK */
   588	#define CERT_PKEY_CA_PARAM 0x80
   589	/* Signing explicitly allowed as opposed to SHA1 fallback */
   590	#define CERT_PKEY_EXPLICIT_SIGN 0x100
   591	/* Client CA issuer names match (always set for server cert) */
   592	#define CERT_PKEY_ISSUER_NAME 0x200
   593	/* Cert type matches client types (always set for server cert) */
   594	#define CERT_PKEY_CERT_TYPE 0x400
   595	/* Cert chain suitable to Suite B */
   596	#define CERT_PKEY_SUITEB 0x800
   597	/* Cert pkey valid for raw public key use */
   598	#define CERT_PKEY_RPK 0x1000
   599	
   600	#define SSL_CONF_FLAG_CMDLINE 0x1
   601	#define SSL_CONF_FLAG_FILE 0x2
   602	#define SSL_CONF_FLAG_CLIENT 0x4
   603	#define SSL_CONF_FLAG_SERVER 0x8
   604	#define SSL_CONF_FLAG_SHOW_ERRORS 0x10
   605	#define SSL_CONF_FLAG_CERTIFICATE 0x20
   606	#define SSL_CONF_FLAG_REQUIRE_PRIVATE 0x40
   607	/* Configuration value types */
   608	#define SSL_CONF_TYPE_UNKNOWN 0x0
   609	#define SSL_CONF_TYPE_STRING 0x1
   610	#define SSL_CONF_TYPE_FILE 0x2
   611	#define SSL_CONF_TYPE_DIR 0x3
   612	#define SSL_CONF_TYPE_NONE 0x4
   613	#define SSL_CONF_TYPE_STORE 0x5
   614	
   615	/* Maximum length of the application-controlled segment of a a TLSv1.3 cookie */
   616	#define SSL_COOKIE_LENGTH 4096
   617	
   618	/*
   619	 * Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value, they
   620	 * cannot be used to clear bits.
   621	 */
   622	
   623	uint64_t SSL_CTX_get_options(const SSL_CTX *ctx);
   624	uint64_t SSL_get_options(const SSL *s);
   625	uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op);
   626	uint64_t SSL_clear_options(SSL *s, uint64_t op);
   627	uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op);
   628	uint64_t SSL_set_options(SSL *s, uint64_t op);
   629	
   630	#define SSL_CTX_set_mode(ctx, op) \
   631	    SSL_CTX_ctrl((ctx), SSL_CTRL_MODE, (op), NULL)
   632	#define SSL_CTX_clear_mode(ctx, op) \
   633	    SSL_CTX_ctrl((ctx), SSL_CTRL_CLEAR_MODE, (op), NULL)
   634	#define SSL_CTX_get_mode(ctx) \
   635	    SSL_CTX_ctrl((ctx), SSL_CTRL_MODE, 0, NULL)
   636	#define SSL_clear_mode(ssl, op) \
   637	    SSL_ctrl((ssl), SSL_CTRL_CLEAR_MODE, (op), NULL)
   638	#define SSL_set_mode(ssl, op) \
   639	    SSL_ctrl((ssl), SSL_CTRL_MODE, (op), NULL)
   640	#define SSL_get_mode(ssl) \
   641	    SSL_ctrl((ssl), SSL_CTRL_MODE, 0, NULL)
   642	#define SSL_set_mtu(ssl, mtu) \
   643	    SSL_ctrl((ssl), SSL_CTRL_SET_MTU, (mtu), NULL)
   644	#define DTLS_set_link_mtu(ssl, mtu) \
   645	    SSL_ctrl((ssl), DTLS_CTRL_SET_LINK_MTU, (mtu), NULL)
   646	#define DTLS_get_link_min_mtu(ssl) \
   647	    SSL_ctrl((ssl), DTLS_CTRL_GET_LINK_MIN_MTU, 0, NULL)
   648	
   649	#define SSL_get_secure_renegotiation_support(ssl) \
   650	    SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)
   651	
   652	#define SSL_CTX_set_cert_flags(ctx, op) \
   653	    SSL_CTX_ctrl((ctx), SSL_CTRL_CERT_FLAGS, (op), NULL)
   654	#define SSL_set_cert_flags(s, op) \
   655	    SSL_ctrl((s), SSL_CTRL_CERT_FLAGS, (op), NULL)
   656	#define SSL_CTX_clear_cert_flags(ctx, op) \
   657	    SSL_CTX_ctrl((ctx), SSL_CTRL_CLEAR_CERT_FLAGS, (op), NULL)
   658	#define SSL_clear_cert_flags(s, op) \
   659	    SSL_ctrl((s), SSL_CTRL_CLEAR_CERT_FLAGS, (op), NULL)
   660	
   661	void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
   662	    void (*cb)(int write_p, int version,
   663	        int content_type, const void *buf,
   664	        size_t len, SSL *ssl, void *arg));
   665	void SSL_set_msg_callback(SSL *ssl,
   666	    void (*cb)(int write_p, int version,
   667	        int content_type, const void *buf,
   668	        size_t len, SSL *ssl, void *arg));
   669	#define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
   670	#define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
   671	
   672	#define SSL_get_extms_support(s) \
   673	    SSL_ctrl((s), SSL_CTRL_GET_EXTMS_SUPPORT, 0, NULL)
   674	
   675	#ifndef OPENSSL_NO_SRP
   676	/* see tls_srp.c */
   677	#ifndef OPENSSL_NO_DEPRECATED_3_0
   678	OSSL_DEPRECATEDIN_3_0 __owur int SSL_SRP_CTX_init(SSL *s);
   679	OSSL_DEPRECATEDIN_3_0 __owur int SSL_CTX_SRP_CTX_init(SSL_CTX *ctx);
   680	OSSL_DEPRECATEDIN_3_0 int SSL_SRP_CTX_free(SSL *ctx);
   681	OSSL_DEPRECATEDIN_3_0 int SSL_CTX_SRP_CTX_free(SSL_CTX *ctx);
   682	OSSL_DEPRECATEDIN_3_0 __owur int SSL_srp_server_param_with_username(SSL *s,
   683	    int *ad);
   684	OSSL_DEPRECATEDIN_3_0 __owur int SRP_Calc_A_param(SSL *s);
   685	#endif
   686	#endif
   687	
   688	/* 100k max cert list */
   689	#define SSL_MAX_CERT_LIST_DEFAULT (1024 * 100)
   690	
   691	#define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024 * 20)
   692	
   693	/*
   694	 * This callback type is used inside SSL_CTX, SSL, and in the functions that
   695	 * set them. It is used to override the generation of SSL/TLS session IDs in
   696	 * a server. Return value should be zero on an error, non-zero to proceed.
   697	 * Also, callbacks should themselves check if the id they generate is unique
   698	 * otherwise the SSL handshake will fail with an error - callbacks can do
   699	 * this using the 'ssl' value they're passed by;
   700	 * SSL_has_matching_session_id(ssl, id, *id_len) The length value passed in
   701	 * is set at the maximum size the session ID can be. In SSLv3/TLSv1 it is 32
   702	 * bytes. The callback can alter this length to be less if desired. It is
   703	 * also an error for the callback to set the size to zero.
   704	 */
   705	typedef int (*GEN_SESSION_CB)(SSL *ssl, unsigned char *id,
   706	    unsigned int *id_len);
   707	
   708	#define SSL_SESS_CACHE_OFF 0x0000
   709	#define SSL_SESS_CACHE_CLIENT 0x0001
   710	#define SSL_SESS_CACHE_SERVER 0x0002
   711	#define SSL_SESS_CACHE_BOTH (SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_SERVER)
   712	#define SSL_SESS_CACHE_NO_AUTO_CLEAR 0x0080
   713	/* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
   714	#define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 0x0100
   715	#define SSL_SESS_CACHE_NO_INTERNAL_STORE 0x0200
   716	#define SSL_SESS_CACHE_NO_INTERNAL \
   717	    (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP | SSL_SESS_CACHE_NO_INTERNAL_STORE)
   718	#define SSL_SESS_CACHE_UPDATE_TIME 0x0400
   719	
   720	LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
   721	#define SSL_CTX_sess_number(ctx) \
   722	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_NUMBER, 0, NULL)
   723	#define SSL_CTX_sess_connect(ctx) \
   724	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_CONNECT, 0, NULL)
   725	#define SSL_CTX_sess_connect_good(ctx) \
   726	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_CONNECT_GOOD, 0, NULL)
   727	#define SSL_CTX_sess_connect_renegotiate(ctx) \
   728	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_CONNECT_RENEGOTIATE, 0, NULL)
   729	#define SSL_CTX_sess_accept(ctx) \
   730	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_ACCEPT, 0, NULL)
   731	#define SSL_CTX_sess_accept_renegotiate(ctx) \
   732	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_ACCEPT_RENEGOTIATE, 0, NULL)
   733	#define SSL_CTX_sess_accept_good(ctx) \
   734	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_ACCEPT_GOOD, 0, NULL)
   735	#define SSL_CTX_sess_hits(ctx) \
   736	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_HIT, 0, NULL)
   737	#define SSL_CTX_sess_cb_hits(ctx) \
   738	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_CB_HIT, 0, NULL)
   739	#define SSL_CTX_sess_misses(ctx) \
   740	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_MISSES, 0, NULL)
   741	#define SSL_CTX_sess_timeouts(ctx) \
   742	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_TIMEOUTS, 0, NULL)
   743	#define SSL_CTX_sess_cache_full(ctx) \
   744	    SSL_CTX_ctrl(ctx, SSL_CTRL_SESS_CACHE_FULL, 0, NULL)
   745	
   746	void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
   747	    int (*new_session_cb)(struct ssl_st *ssl,
   748	        SSL_SESSION *sess));
   749	int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(struct ssl_st *ssl,
   750	    SSL_SESSION *sess);
   751	void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
   752	    void (*remove_session_cb)(struct ssl_ctx_st
   753	                                  *ctx,
   754	        SSL_SESSION *sess));
   755	void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(struct ssl_ctx_st *ctx,
   756	    SSL_SESSION *sess);
   757	void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
   758	    SSL_SESSION *(*get_session_cb)(struct ssl_st
   759	                                       *ssl,
   760	        const unsigned char
   761	            *data,
   762	        int len,
   763	        int *copy));
   764	SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(struct ssl_st *ssl,
   765	    const unsigned char *data,
   766	    int len, int *copy);
   767	void SSL_CTX_set_info_callback(SSL_CTX *ctx,
   768	    void (*cb)(const SSL *ssl, int type, int val));
   769	void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl, int type,
   770	    int val);
   771	void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
   772	    int (*client_cert_cb)(SSL *ssl, X509 **x509,
   773	        EVP_PKEY **pkey));
   774	int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL *ssl, X509 **x509,
   775	    EVP_PKEY **pkey);
   776	#ifndef OPENSSL_NO_ENGINE
   777	__owur int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
   778	#endif
   779	void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
   780	    int (*app_gen_cookie_cb)(SSL *ssl,
   781	        unsigned char
   782	            *cookie,
   783	        unsigned int
   784	            *cookie_len));
   785	void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
   786	    int (*app_verify_cookie_cb)(SSL *ssl,
   787	        const unsigned char *cookie,
   788	        unsigned int
   789	            cookie_len));
   790	
   791	void SSL_CTX_set_stateless_cookie_generate_cb(
   792	    SSL_CTX *ctx,
   793	    int (*gen_stateless_cookie_cb)(SSL *ssl,
   794	        unsigned char *cookie,
   795	        size_t *cookie_len));
   796	void SSL_CTX_set_stateless_cookie_verify_cb(
   797	    SSL_CTX *ctx,
   798	    int (*verify_stateless_cookie_cb)(SSL *ssl,
   799	        const unsigned char *cookie,
   800	        size_t cookie_len));
   801	#ifndef OPENSSL_NO_NEXTPROTONEG
   802	
   803	typedef int (*SSL_CTX_npn_advertised_cb_func)(SSL *ssl,
   804	    const unsigned char **out,
   805	    unsigned int *outlen,
   806	    void *arg);
   807	void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *s,
   808	    SSL_CTX_npn_advertised_cb_func cb,
   809	    void *arg);
   810	#define SSL_CTX_set_npn_advertised_cb SSL_CTX_set_next_protos_advertised_cb
   811	
   812	typedef int (*SSL_CTX_npn_select_cb_func)(SSL *s,
   813	    unsigned char **out,
   814	    unsigned char *outlen,
   815	    const unsigned char *in,
   816	    unsigned int inlen,
   817	    void *arg);
   818	void SSL_CTX_set_next_proto_select_cb(SSL_CTX *s,
   819	    SSL_CTX_npn_select_cb_func cb,
   820	    void *arg);
   821	#define SSL_CTX_set_npn_select_cb SSL_CTX_set_next_proto_select_cb
   822	
   823	void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
   824	    unsigned *len);
   825	#define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
   826	#endif
   827	
   828	__owur int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
   829	    const unsigned char *in, unsigned int inlen,
   830	    const unsigned char *client,
   831	    unsigned int client_len);
   832	
   833	#define OPENSSL_NPN_UNSUPPORTED 0
   834	#define OPENSSL_NPN_NEGOTIATED 1
   835	#define OPENSSL_NPN_NO_OVERLAP 2
   836	
   837	__owur int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
   838	    unsigned int protos_len);
   839	__owur int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
   840	    unsigned int protos_len);
   841	typedef int (*SSL_CTX_alpn_select_cb_func)(SSL *ssl,
   842	    const unsigned char **out,
   843	    unsigned char *outlen,
   844	    const unsigned char *in,
   845	    unsigned int inlen,
   846	    void *arg);
   847	void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
   848	    SSL_CTX_alpn_select_cb_func cb,
   849	    void *arg);
   850	void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
   851	    unsigned int *len);
   852	
   853	#ifndef OPENSSL_NO_PSK
   854	/*
   855	 * the maximum length of the buffer given to callbacks containing the
   856	 * resulting identity/psk
   857	 */
   858	#define PSK_MAX_IDENTITY_LEN 256
   859	#define PSK_MAX_PSK_LEN 512
   860	typedef unsigned int (*SSL_psk_client_cb_func)(SSL *ssl,
   861	    const char *hint,
   862	    char *identity,
   863	    unsigned int max_identity_len,
   864	    unsigned char *psk,
   865	    unsigned int max_psk_len);
   866	void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb);
   867	void SSL_set_psk_client_callback(SSL *ssl, SSL_psk_client_cb_func cb);
   868	
   869	typedef unsigned int (*SSL_psk_server_cb_func)(SSL *ssl,
   870	    const char *identity,
   871	    unsigned char *psk,
   872	    unsigned int max_psk_len);
   873	void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
   874	void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);
   875	
   876	__owur int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
   877	__owur int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
   878	const char *SSL_get_psk_identity_hint(const SSL *s);
   879	const char *SSL_get_psk_identity(const SSL *s);
   880	#endif
   881	
   882	typedef int (*SSL_psk_find_session_cb_func)(SSL *ssl,
   883	    const unsigned char *identity,
   884	    size_t identity_len,
   885	    SSL_SESSION **sess);
   886	typedef int (*SSL_psk_use_session_cb_func)(SSL *ssl, const EVP_MD *md,
   887	    const unsigned char **id,
   888	    size_t *idlen,
   889	    SSL_SESSION **sess);
   890	
   891	void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb);
   892	void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
   893	    SSL_psk_find_session_cb_func cb);
   894	void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb);
   895	void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
   896	    SSL_psk_use_session_cb_func cb);
   897	
   898	/* Register callbacks to handle custom TLS Extensions for client or server. */
   899	
   900	__owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
   901	    unsigned int ext_type);
   902	
   903	__owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx,
   904	    unsigned int ext_type,
   905	    custom_ext_add_cb add_cb,
   906	    custom_ext_free_cb free_cb,
   907	    void *add_arg,
   908	    custom_ext_parse_cb parse_cb,
   909	    void *parse_arg);
   910	
   911	__owur int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx,
   912	    unsigned int ext_type,
   913	    custom_ext_add_cb add_cb,
   914	    custom_ext_free_cb free_cb,
   915	    void *add_arg,
   916	    custom_ext_parse_cb parse_cb,
   917	    void *parse_arg);
   918	
   919	__owur int SSL_CTX_add_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
   920	    unsigned int context,
   921	    SSL_custom_ext_add_cb_ex add_cb,
   922	    SSL_custom_ext_free_cb_ex free_cb,
   923	    void *add_arg,
   924	    SSL_custom_ext_parse_cb_ex parse_cb,
   925	    void *parse_arg);
   926	
   927	__owur int SSL_extension_supported(unsigned int ext_type);
   928	
   929	#define SSL_NOTHING 1
   930	#define SSL_WRITING 2
   931	#define SSL_READING 3
   932	#define SSL_X509_LOOKUP 4
   933	#define SSL_ASYNC_PAUSED 5
   934	#define SSL_ASYNC_NO_JOBS 6
   935	#define SSL_CLIENT_HELLO_CB 7
   936	#define SSL_RETRY_VERIFY 8
   937	
   938	/* These will only be used when doing non-blocking IO */
   939	#define SSL_want_nothing(s) (SSL_want(s) == SSL_NOTHING)
   940	#define SSL_want_read(s) (SSL_want(s) == SSL_READING)
   941	#define SSL_want_write(s) (SSL_want(s) == SSL_WRITING)
   942	#define SSL_want_x509_lookup(s) (SSL_want(s) == SSL_X509_LOOKUP)
   943	#define SSL_want_retry_verify(s) (SSL_want(s) == SSL_RETRY_VERIFY)
   944	#define SSL_want_async(s) (SSL_want(s) == SSL_ASYNC_PAUSED)
   945	#define SSL_want_async_job(s) (SSL_want(s) == SSL_ASYNC_NO_JOBS)
   946	#define SSL_want_client_hello_cb(s) (SSL_want(s) == SSL_CLIENT_HELLO_CB)
   947	
   948	#define SSL_MAC_FLAG_READ_MAC_STREAM 1
   949	#define SSL_MAC_FLAG_WRITE_MAC_STREAM 2
   950	#define SSL_MAC_FLAG_READ_MAC_TLSTREE 4
   951	#define SSL_MAC_FLAG_WRITE_MAC_TLSTREE 8
   952	
   953	/*
   954	 * A callback for logging out TLS key material. This callback should log out
   955	 * |line| followed by a newline.
   956	 */
   957	typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line);
   958	
   959	/*
   960	 * SSL_CTX_set_keylog_callback configures a callback to log key material. This
   961	 * is intended for debugging use with tools like Wireshark. The cb function
   962	 * should log line followed by a newline.
   963	 */
   964	void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb);
   965	
   966	/*
   967	 * SSL_CTX_get_keylog_callback returns the callback configured by
   968	 * SSL_CTX_set_keylog_callback.
   969	 */
   970	SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx);
   971	
   972	int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data);
   973	uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx);
   974	int SSL_set_max_early_data(SSL *s, uint32_t max_early_data);
   975	uint32_t SSL_get_max_early_data(const SSL *s);
   976	int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data);
   977	uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx);
   978	int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data);
   979	uint32_t SSL_get_recv_max_early_data(const SSL *s);
   980	
   981	#ifdef __cplusplus
   982	}
   983	#endif
   984	
   985	#include <openssl/ssl2.h>
   986	#include <openssl/ssl3.h>
   987	#include <openssl/tls1.h> /* This is mostly sslv3 with a few tweaks */
   988	#include <openssl/dtls1.h> /* Datagram TLS */
   989	#include <openssl/srtp.h> /* Support for the use_srtp extension */
   990	#include <openssl/quic.h>
   991	
   992	#ifdef __cplusplus
   993	extern "C" {
   994	#endif
   995	
   996	/*
   997	 * These need to be after the above set of includes due to a compiler bug
   998	 * in VisualStudio 2015
   999	 */
  1000	/* clang-format off */
  1001	SKM_DEFINE_STACK_OF_INTERNAL(SSL_CIPHER, const SSL_CIPHER, SSL_CIPHER)
  1002	#define sk_SSL_CIPHER_num(sk) OPENSSL_sk_num(ossl_check_const_SSL_CIPHER_sk_type(sk))
  1003	#define sk_SSL_CIPHER_value(sk, idx) ((const SSL_CIPHER *)OPENSSL_sk_value(ossl_check_const_SSL_CIPHER_sk_type(sk), (idx)))
  1004	#define sk_SSL_CIPHER_new(cmp) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new(ossl_check_SSL_CIPHER_compfunc_type(cmp)))
  1005	#define sk_SSL_CIPHER_new_null() ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new_null())
  1006	#define sk_SSL_CIPHER_new_reserve(cmp, n) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_new_reserve(ossl_check_SSL_CIPHER_compfunc_type(cmp), (n)))
  1007	#define sk_SSL_CIPHER_reserve(sk, n) OPENSSL_sk_reserve(ossl_check_SSL_CIPHER_sk_type(sk), (n))
  1008	#define sk_SSL_CIPHER_free(sk) OPENSSL_sk_free(ossl_check_SSL_CIPHER_sk_type(sk))
  1009	#define sk_SSL_CIPHER_zero(sk) OPENSSL_sk_zero(ossl_check_SSL_CIPHER_sk_type(sk))
  1010	#define sk_SSL_CIPHER_delete(sk, i) ((const SSL_CIPHER *)OPENSSL_sk_delete(ossl_check_SSL_CIPHER_sk_type(sk), (i)))
  1011	#define sk_SSL_CIPHER_delete_ptr(sk, ptr) ((const SSL_CIPHER *)OPENSSL_sk_delete_ptr(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr)))
  1012	#define sk_SSL_CIPHER_push(sk, ptr) OPENSSL_sk_push(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
  1013	#define sk_SSL_CIPHER_unshift(sk, ptr) OPENSSL_sk_unshift(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
  1014	#define sk_SSL_CIPHER_pop(sk) ((const SSL_CIPHER *)OPENSSL_sk_pop(ossl_check_SSL_CIPHER_sk_type(sk)))
  1015	#define sk_SSL_CIPHER_shift(sk) ((const SSL_CIPHER *)OPENSSL_sk_shift(ossl_check_SSL_CIPHER_sk_type(sk)))
  1016	#define sk_SSL_CIPHER_pop_free(sk, freefunc) OPENSSL_sk_pop_free(ossl_check_SSL_CIPHER_sk_type(sk),ossl_check_SSL_CIPHER_freefunc_type(freefunc))
  1017	#define sk_SSL_CIPHER_insert(sk, ptr, idx) OPENSSL_sk_insert(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr), (idx))
  1018	#define sk_SSL_CIPHER_set(sk, idx, ptr) ((const SSL_CIPHER *)OPENSSL_sk_set(ossl_check_SSL_CIPHER_sk_type(sk), (idx), ossl_check_SSL_CIPHER_type(ptr)))
  1019	#define sk_SSL_CIPHER_find(sk, ptr) OPENSSL_sk_find(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
  1020	#define sk_SSL_CIPHER_find_ex(sk, ptr) OPENSSL_sk_find_ex(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr))
  1021	#define sk_SSL_CIPHER_find_all(sk, ptr, pnum) OPENSSL_sk_find_all(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_type(ptr), pnum)
  1022	#define sk_SSL_CIPHER_sort(sk) OPENSSL_sk_sort(ossl_check_SSL_CIPHER_sk_type(sk))
  1023	#define sk_SSL_CIPHER_is_sorted(sk) OPENSSL_sk_is_sorted(ossl_check_const_SSL_CIPHER_sk_type(sk))
  1024	#define sk_SSL_CIPHER_dup(sk) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_dup(ossl_check_const_SSL_CIPHER_sk_type(sk)))
  1025	#define sk_SSL_CIPHER_deep_copy(sk, copyfunc, freefunc) ((STACK_OF(SSL_CIPHER) *)OPENSSL_sk_deep_copy(ossl_check_const_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_copyfunc_type(copyfunc), ossl_check_SSL_CIPHER_freefunc_type(freefunc)))
  1026	#define sk_SSL_CIPHER_set_cmp_func(sk, cmp) ((sk_SSL_CIPHER_compfunc)OPENSSL_sk_set_cmp_func(ossl_check_SSL_CIPHER_sk_type(sk), ossl_check_SSL_CIPHER_compfunc_type(cmp)))
  1027	
  1028	/* clang-format on */
  1029	
  1030	/* compatibility */
  1031	#define SSL_set_app_data(s, arg) (SSL_set_ex_data(s, 0, (char *)(arg)))
  1032	#define SSL_get_app_data(s) (SSL_get_ex_data(s, 0))
  1033	#define SSL_SESSION_set_app_data(s, a) (SSL_SESSION_set_ex_data(s, 0, \
  1034	    (char *)(a)))
  1035	#define SSL_SESSION_get_app_data(s) (SSL_SESSION_get_ex_data(s, 0))
  1036	#define SSL_CTX_get_app_data(ctx) (SSL_CTX_get_ex_data(ctx, 0))
  1037	#define SSL_CTX_set_app_data(ctx, arg) (SSL_CTX_set_ex_data(ctx, 0, \
  1038	    (char *)(arg)))
  1039	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  1040	OSSL_DEPRECATEDIN_1_1_0 void SSL_set_debug(SSL *s, int debug);
  1041	#endif
  1042	
  1043	/* TLSv1.3 KeyUpdate message types */
  1044	/* -1 used so that this is an invalid value for the on-the-wire protocol */
  1045	#define SSL_KEY_UPDATE_NONE -1
  1046	/* Values as defined for the on-the-wire protocol */
  1047	#define SSL_KEY_UPDATE_NOT_REQUESTED 0
  1048	#define SSL_KEY_UPDATE_REQUESTED 1
  1049	
  1050	/*
  1051	 * The valid handshake states (one for each type message sent and one for each
  1052	 * type of message received). There are also two "special" states:
  1053	 * TLS = TLS or DTLS state
  1054	 * DTLS = DTLS specific state
  1055	 * CR/SR = Client Read/Server Read
  1056	 * CW/SW = Client Write/Server Write
  1057	 *
  1058	 * The "special" states are:
  1059	 * TLS_ST_BEFORE = No handshake has been initiated yet
  1060	 * TLS_ST_OK = A handshake has been successfully completed
  1061	 */
  1062	typedef enum {
  1063	    TLS_ST_BEFORE,
  1064	    TLS_ST_OK,
  1065	    DTLS_ST_CR_HELLO_VERIFY_REQUEST,
  1066	    TLS_ST_CR_SRVR_HELLO,
  1067	    TLS_ST_CR_CERT,
  1068	    TLS_ST_CR_COMP_CERT,
  1069	    TLS_ST_CR_CERT_STATUS,
  1070	    TLS_ST_CR_KEY_EXCH,
  1071	    TLS_ST_CR_CERT_REQ,
  1072	    TLS_ST_CR_SRVR_DONE,
  1073	    TLS_ST_CR_SESSION_TICKET,
  1074	    TLS_ST_CR_CHANGE,
  1075	    TLS_ST_CR_FINISHED,
  1076	    TLS_ST_CW_CLNT_HELLO,
  1077	    TLS_ST_CW_CERT,
  1078	    TLS_ST_CW_COMP_CERT,
  1079	    TLS_ST_CW_KEY_EXCH,
  1080	    TLS_ST_CW_CERT_VRFY,
  1081	    TLS_ST_CW_CHANGE,
  1082	    TLS_ST_CW_NEXT_PROTO,
  1083	    TLS_ST_CW_FINISHED,
  1084	    TLS_ST_SW_HELLO_REQ,
  1085	    TLS_ST_SR_CLNT_HELLO,
  1086	    DTLS_ST_SW_HELLO_VERIFY_REQUEST,
  1087	    TLS_ST_SW_SRVR_HELLO,
  1088	    TLS_ST_SW_CERT,
  1089	    TLS_ST_SW_COMP_CERT,
  1090	    TLS_ST_SW_KEY_EXCH,
  1091	    TLS_ST_SW_CERT_REQ,
  1092	    TLS_ST_SW_SRVR_DONE,
  1093	    TLS_ST_SR_CERT,
  1094	    TLS_ST_SR_COMP_CERT,
  1095	    TLS_ST_SR_KEY_EXCH,
  1096	    TLS_ST_SR_CERT_VRFY,
  1097	    TLS_ST_SR_NEXT_PROTO,
  1098	    TLS_ST_SR_CHANGE,
  1099	    TLS_ST_SR_FINISHED,
  1100	    TLS_ST_SW_SESSION_TICKET,
  1101	    TLS_ST_SW_CERT_STATUS,
  1102	    TLS_ST_SW_CHANGE,
  1103	    TLS_ST_SW_FINISHED,
  1104	    TLS_ST_SW_ENCRYPTED_EXTENSIONS,
  1105	    TLS_ST_CR_ENCRYPTED_EXTENSIONS,
  1106	    TLS_ST_CR_CERT_VRFY,
  1107	    TLS_ST_SW_CERT_VRFY,
  1108	    TLS_ST_CR_HELLO_REQ,
  1109	    TLS_ST_SW_KEY_UPDATE,
  1110	    TLS_ST_CW_KEY_UPDATE,
  1111	    TLS_ST_SR_KEY_UPDATE,
  1112	    TLS_ST_CR_KEY_UPDATE,
  1113	    TLS_ST_EARLY_DATA,
  1114	    TLS_ST_PENDING_EARLY_DATA_END,
  1115	    TLS_ST_CW_END_OF_EARLY_DATA,
  1116	    TLS_ST_SR_END_OF_EARLY_DATA
  1117	} OSSL_HANDSHAKE_STATE;
  1118	
  1119	/*
  1120	 * Most of the following state values are no longer used and are defined to be
  1121	 * the closest equivalent value in the current state machine code. Not all
  1122	 * defines have an equivalent and are set to a dummy value (-1). SSL_ST_CONNECT
  1123	 * and SSL_ST_ACCEPT are still in use in the definition of SSL_CB_ACCEPT_LOOP,
  1124	 * SSL_CB_ACCEPT_EXIT, SSL_CB_CONNECT_LOOP and SSL_CB_CONNECT_EXIT.
  1125	 */
  1126	
  1127	#define SSL_ST_CONNECT 0x1000
  1128	#define SSL_ST_ACCEPT 0x2000
  1129	
  1130	#define SSL_ST_MASK 0x0FFF
  1131	
  1132	#define SSL_CB_LOOP 0x01
  1133	#define SSL_CB_EXIT 0x02
  1134	#define SSL_CB_READ 0x04
  1135	#define SSL_CB_WRITE 0x08
  1136	#define SSL_CB_ALERT 0x4000 /* used in callback */
  1137	#define SSL_CB_READ_ALERT (SSL_CB_ALERT | SSL_CB_READ)
  1138	#define SSL_CB_WRITE_ALERT (SSL_CB_ALERT | SSL_CB_WRITE)
  1139	#define SSL_CB_ACCEPT_LOOP (SSL_ST_ACCEPT | SSL_CB_LOOP)
  1140	#define SSL_CB_ACCEPT_EXIT (SSL_ST_ACCEPT | SSL_CB_EXIT)
  1141	#define SSL_CB_CONNECT_LOOP (SSL_ST_CONNECT | SSL_CB_LOOP)
  1142	#define SSL_CB_CONNECT_EXIT (SSL_ST_CONNECT | SSL_CB_EXIT)
  1143	#define SSL_CB_HANDSHAKE_START 0x10
  1144	#define SSL_CB_HANDSHAKE_DONE 0x20
  1145	
  1146	/* Is the SSL_connection established? */
  1147	#define SSL_in_connect_init(a) (SSL_in_init(a) && !SSL_is_server(a))
  1148	#define SSL_in_accept_init(a) (SSL_in_init(a) && SSL_is_server(a))
  1149	int SSL_in_init(const SSL *s);
  1150	int SSL_in_before(const SSL *s);
  1151	int SSL_is_init_finished(const SSL *s);
  1152	
  1153	/*
  1154	 * The following 3 states are kept in ssl->rlayer.rstate when reads fail, you
  1155	 * should not need these
  1156	 */
  1157	#define SSL_ST_READ_HEADER 0xF0
  1158	#define SSL_ST_READ_BODY 0xF1
  1159	#define SSL_ST_READ_DONE 0xF2
  1160	
  1161	/*-
  1162	 * Obtain latest Finished message
  1163	 *   -- that we sent (SSL_get_finished)
  1164	 *   -- that we expected from peer (SSL_get_peer_finished).
  1165	 * Returns length (0 == no Finished so far), copies up to 'count' bytes.
  1166	 */
  1167	size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
  1168	size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
  1169	
  1170	/*
  1171	 * use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 3 options are
  1172	 * 'ored' with SSL_VERIFY_PEER if they are desired
  1173	 */
  1174	#define SSL_VERIFY_NONE 0x00
  1175	#define SSL_VERIFY_PEER 0x01
  1176	#define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
  1177	#define SSL_VERIFY_CLIENT_ONCE 0x04
  1178	#define SSL_VERIFY_POST_HANDSHAKE 0x08
  1179	
  1180	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  1181	#define OpenSSL_add_ssl_algorithms() SSL_library_init()
  1182	#define SSLeay_add_ssl_algorithms() SSL_library_init()
  1183	#endif
  1184	
  1185	/* More backward compatibility */
  1186	#define SSL_get_cipher(s) \
  1187	    SSL_CIPHER_get_name(SSL_get_current_cipher(s))
  1188	#define SSL_get_cipher_bits(s, np) \
  1189	    SSL_CIPHER_get_bits(SSL_get_current_cipher(s), np)
  1190	#define SSL_get_cipher_version(s) \
  1191	    SSL_CIPHER_get_version(SSL_get_current_cipher(s))
  1192	#define SSL_get_cipher_name(s) \
  1193	    SSL_CIPHER_get_name(SSL_get_current_cipher(s))
  1194	#define SSL_get_time(a) SSL_SESSION_get_time(a)
  1195	#define SSL_set_time(a, b) SSL_SESSION_set_time((a), (b))
  1196	#define SSL_get_timeout(a) SSL_SESSION_get_timeout(a)
  1197	#define SSL_set_timeout(a, b) SSL_SESSION_set_timeout((a), (b))
  1198	
  1199	#define d2i_SSL_SESSION_bio(bp, s_id) ASN1_d2i_bio_of(SSL_SESSION, SSL_SESSION_new, d2i_SSL_SESSION, bp, s_id)
  1200	#define i2d_SSL_SESSION_bio(bp, s_id) ASN1_i2d_bio_of(SSL_SESSION, i2d_SSL_SESSION, bp, s_id)
  1201	
  1202	DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
  1203	#define SSL_AD_REASON_OFFSET 1000 /* offset to get SSL_R_... value \
  1204	                                   * from SSL_AD_... */
  1205	/* These alert types are for SSLv3 and TLSv1 */
  1206	#define SSL_AD_CLOSE_NOTIFY SSL3_AD_CLOSE_NOTIFY
  1207	/* fatal */
  1208	#define SSL_AD_UNEXPECTED_MESSAGE SSL3_AD_UNEXPECTED_MESSAGE
  1209	/* fatal */
  1210	#define SSL_AD_BAD_RECORD_MAC SSL3_AD_BAD_RECORD_MAC
  1211	#define SSL_AD_DECRYPTION_FAILED TLS1_AD_DECRYPTION_FAILED
  1212	#define SSL_AD_RECORD_OVERFLOW TLS1_AD_RECORD_OVERFLOW
  1213	/* fatal */
  1214	#define SSL_AD_DECOMPRESSION_FAILURE SSL3_AD_DECOMPRESSION_FAILURE
  1215	/* fatal */
  1216	#define SSL_AD_HANDSHAKE_FAILURE SSL3_AD_HANDSHAKE_FAILURE
  1217	/* Not for TLS */
  1218	#define SSL_AD_NO_CERTIFICATE SSL3_AD_NO_CERTIFICATE
  1219	#define SSL_AD_BAD_CERTIFICATE SSL3_AD_BAD_CERTIFICATE
  1220	#define SSL_AD_UNSUPPORTED_CERTIFICATE SSL3_AD_UNSUPPORTED_CERTIFICATE
  1221	#define SSL_AD_CERTIFICATE_REVOKED SSL3_AD_CERTIFICATE_REVOKED
  1222	#define SSL_AD_CERTIFICATE_EXPIRED SSL3_AD_CERTIFICATE_EXPIRED
  1223	#define SSL_AD_CERTIFICATE_UNKNOWN SSL3_AD_CERTIFICATE_UNKNOWN
  1224	/* fatal */
  1225	#define SSL_AD_ILLEGAL_PARAMETER SSL3_AD_ILLEGAL_PARAMETER
  1226	/* fatal */
  1227	#define SSL_AD_UNKNOWN_CA TLS1_AD_UNKNOWN_CA
  1228	/* fatal */
  1229	#define SSL_AD_ACCESS_DENIED TLS1_AD_ACCESS_DENIED
  1230	/* fatal */
  1231	#define SSL_AD_DECODE_ERROR TLS1_AD_DECODE_ERROR
  1232	#define SSL_AD_DECRYPT_ERROR TLS1_AD_DECRYPT_ERROR
  1233	/* fatal */
  1234	#define SSL_AD_EXPORT_RESTRICTION TLS1_AD_EXPORT_RESTRICTION
  1235	/* fatal */
  1236	#define SSL_AD_PROTOCOL_VERSION TLS1_AD_PROTOCOL_VERSION
  1237	/* fatal */
  1238	#define SSL_AD_INSUFFICIENT_SECURITY TLS1_AD_INSUFFICIENT_SECURITY
  1239	/* fatal */
  1240	#define SSL_AD_INTERNAL_ERROR TLS1_AD_INTERNAL_ERROR
  1241	#define SSL_AD_USER_CANCELLED TLS1_AD_USER_CANCELLED
  1242	#define SSL_AD_NO_RENEGOTIATION TLS1_AD_NO_RENEGOTIATION
  1243	#define SSL_AD_MISSING_EXTENSION TLS13_AD_MISSING_EXTENSION
  1244	#define SSL_AD_CERTIFICATE_REQUIRED TLS13_AD_CERTIFICATE_REQUIRED
  1245	#define SSL_AD_UNSUPPORTED_EXTENSION TLS1_AD_UNSUPPORTED_EXTENSION
  1246	#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
  1247	#define SSL_AD_UNRECOGNIZED_NAME TLS1_AD_UNRECOGNIZED_NAME
  1248	#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
  1249	#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
  1250	/* fatal */
  1251	#define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY
  1252	/* fatal */
  1253	#define SSL_AD_INAPPROPRIATE_FALLBACK TLS1_AD_INAPPROPRIATE_FALLBACK
  1254	#define SSL_AD_NO_APPLICATION_PROTOCOL TLS1_AD_NO_APPLICATION_PROTOCOL
  1255	#define SSL_ERROR_NONE 0
  1256	#define SSL_ERROR_SSL 1
  1257	#define SSL_ERROR_WANT_READ 2
  1258	#define SSL_ERROR_WANT_WRITE 3
  1259	#define SSL_ERROR_WANT_X509_LOOKUP 4
  1260	#define SSL_ERROR_SYSCALL 5 /* look at error stack/return \
  1261	                             * value/errno */
  1262	#define SSL_ERROR_ZERO_RETURN 6
  1263	#define SSL_ERROR_WANT_CONNECT 7
  1264	#define SSL_ERROR_WANT_ACCEPT 8
  1265	#define SSL_ERROR_WANT_ASYNC 9
  1266	#define SSL_ERROR_WANT_ASYNC_JOB 10
  1267	#define SSL_ERROR_WANT_CLIENT_HELLO_CB 11
  1268	#define SSL_ERROR_WANT_RETRY_VERIFY 12
  1269	
  1270	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1271	#define SSL_CTRL_SET_TMP_DH 3
  1272	#define SSL_CTRL_SET_TMP_ECDH 4
  1273	#define SSL_CTRL_SET_TMP_DH_CB 6
  1274	#endif
  1275	
  1276	#define SSL_CTRL_GET_CLIENT_CERT_REQUEST 9
  1277	#define SSL_CTRL_GET_NUM_RENEGOTIATIONS 10
  1278	#define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS 11
  1279	#define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS 12
  1280	#define SSL_CTRL_GET_FLAGS 13
  1281	#define SSL_CTRL_EXTRA_CHAIN_CERT 14
  1282	#define SSL_CTRL_SET_MSG_CALLBACK 15
  1283	#define SSL_CTRL_SET_MSG_CALLBACK_ARG 16
  1284	/* only applies to datagram connections */
  1285	#define SSL_CTRL_SET_MTU 17
  1286	/* Stats */
  1287	#define SSL_CTRL_SESS_NUMBER 20
  1288	#define SSL_CTRL_SESS_CONNECT 21
  1289	#define SSL_CTRL_SESS_CONNECT_GOOD 22
  1290	#define SSL_CTRL_SESS_CONNECT_RENEGOTIATE 23
  1291	#define SSL_CTRL_SESS_ACCEPT 24
  1292	#define SSL_CTRL_SESS_ACCEPT_GOOD 25
  1293	#define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE 26
  1294	#define SSL_CTRL_SESS_HIT 27
  1295	#define SSL_CTRL_SESS_CB_HIT 28
  1296	#define SSL_CTRL_SESS_MISSES 29
  1297	#define SSL_CTRL_SESS_TIMEOUTS 30
  1298	#define SSL_CTRL_SESS_CACHE_FULL 31
  1299	#define SSL_CTRL_MODE 33
  1300	#define SSL_CTRL_GET_READ_AHEAD 40
  1301	#define SSL_CTRL_SET_READ_AHEAD 41
  1302	#define SSL_CTRL_SET_SESS_CACHE_SIZE 42
  1303	#define SSL_CTRL_GET_SESS_CACHE_SIZE 43
  1304	#define SSL_CTRL_SET_SESS_CACHE_MODE 44
  1305	#define SSL_CTRL_GET_SESS_CACHE_MODE 45
  1306	#define SSL_CTRL_GET_MAX_CERT_LIST 50
  1307	#define SSL_CTRL_SET_MAX_CERT_LIST 51
  1308	#define SSL_CTRL_SET_MAX_SEND_FRAGMENT 52
  1309	/* see tls1.h for macros based on these */
  1310	#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 53
  1311	#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 54
  1312	#define SSL_CTRL_SET_TLSEXT_HOSTNAME 55
  1313	#define SSL_CTRL_SET_TLSEXT_DEBUG_CB 56
  1314	#define SSL_CTRL_SET_TLSEXT_DEBUG_ARG 57
  1315	#define SSL_CTRL_GET_TLSEXT_TICKET_KEYS 58
  1316	#define SSL_CTRL_SET_TLSEXT_TICKET_KEYS 59
  1317	/*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT    60 */
  1318	/*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB 61 */
  1319	/*# define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62 */
  1320	#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB 63
  1321	#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG 64
  1322	#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE 65
  1323	#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS 66
  1324	#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS 67
  1325	#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS 68
  1326	#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS 69
  1327	#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP 70
  1328	#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP 71
  1329	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1330	#define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB 72
  1331	#endif
  1332	#define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB 75
  1333	#define SSL_CTRL_SET_SRP_VERIFY_PARAM_CB 76
  1334	#define SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB 77
  1335	#define SSL_CTRL_SET_SRP_ARG 78
  1336	#define SSL_CTRL_SET_TLS_EXT_SRP_USERNAME 79
  1337	#define SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH 80
  1338	#define SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD 81
  1339	#define DTLS_CTRL_GET_TIMEOUT 73
  1340	#define DTLS_CTRL_HANDLE_TIMEOUT 74
  1341	#define SSL_CTRL_GET_RI_SUPPORT 76
  1342	#define SSL_CTRL_CLEAR_MODE 78
  1343	#define SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB 79
  1344	#define SSL_CTRL_GET_EXTRA_CHAIN_CERTS 82
  1345	#define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS 83
  1346	#define SSL_CTRL_CHAIN 88
  1347	#define SSL_CTRL_CHAIN_CERT 89
  1348	#define SSL_CTRL_GET_GROUPS 90
  1349	#define SSL_CTRL_SET_GROUPS 91
  1350	#define SSL_CTRL_SET_GROUPS_LIST 92
  1351	#define SSL_CTRL_GET_SHARED_GROUP 93
  1352	#define SSL_CTRL_SET_SIGALGS 97
  1353	#define SSL_CTRL_SET_SIGALGS_LIST 98
  1354	#define SSL_CTRL_CERT_FLAGS 99
  1355	#define SSL_CTRL_CLEAR_CERT_FLAGS 100
  1356	#define SSL_CTRL_SET_CLIENT_SIGALGS 101
  1357	#define SSL_CTRL_SET_CLIENT_SIGALGS_LIST 102
  1358	#define SSL_CTRL_GET_CLIENT_CERT_TYPES 103
  1359	#define SSL_CTRL_SET_CLIENT_CERT_TYPES 104
  1360	#define SSL_CTRL_BUILD_CERT_CHAIN 105
  1361	#define SSL_CTRL_SET_VERIFY_CERT_STORE 106
  1362	#define SSL_CTRL_SET_CHAIN_CERT_STORE 107
  1363	#define SSL_CTRL_GET_PEER_SIGNATURE_NID 108
  1364	#define SSL_CTRL_GET_PEER_TMP_KEY 109
  1365	#define SSL_CTRL_GET_RAW_CIPHERLIST 110
  1366	#define SSL_CTRL_GET_EC_POINT_FORMATS 111
  1367	#define SSL_CTRL_GET_CHAIN_CERTS 115
  1368	#define SSL_CTRL_SELECT_CURRENT_CERT 116
  1369	#define SSL_CTRL_SET_CURRENT_CERT 117
  1370	#define SSL_CTRL_SET_DH_AUTO 118
  1371	#define DTLS_CTRL_SET_LINK_MTU 120
  1372	#define DTLS_CTRL_GET_LINK_MIN_MTU 121
  1373	#define SSL_CTRL_GET_EXTMS_SUPPORT 122
  1374	#define SSL_CTRL_SET_MIN_PROTO_VERSION 123
  1375	#define SSL_CTRL_SET_MAX_PROTO_VERSION 124
  1376	#define SSL_CTRL_SET_SPLIT_SEND_FRAGMENT 125
  1377	#define SSL_CTRL_SET_MAX_PIPELINES 126
  1378	#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_TYPE 127
  1379	#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB 128
  1380	#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG 129
  1381	#define SSL_CTRL_GET_MIN_PROTO_VERSION 130
  1382	#define SSL_CTRL_GET_MAX_PROTO_VERSION 131
  1383	#define SSL_CTRL_GET_SIGNATURE_NID 132
  1384	#define SSL_CTRL_GET_TMP_KEY 133
  1385	#define SSL_CTRL_GET_NEGOTIATED_GROUP 134
  1386	#define SSL_CTRL_GET_IANA_GROUPS 135
  1387	#define SSL_CTRL_SET_RETRY_VERIFY 136
  1388	#define SSL_CTRL_GET_VERIFY_CERT_STORE 137
  1389	#define SSL_CTRL_GET_CHAIN_CERT_STORE 138
  1390	#define SSL_CTRL_GET0_IMPLEMENTED_GROUPS 139
  1391	#define SSL_CTRL_GET_SIGNATURE_NAME 140
  1392	#define SSL_CTRL_GET_PEER_SIGNATURE_NAME 141
  1393	#define SSL_CERT_SET_FIRST 1
  1394	#define SSL_CERT_SET_NEXT 2
  1395	#define SSL_CERT_SET_SERVER 3
  1396	#define DTLSv1_get_timeout(ssl, arg) \
  1397	    SSL_ctrl(ssl, DTLS_CTRL_GET_TIMEOUT, 0, (void *)(arg))
  1398	#define DTLSv1_handle_timeout(ssl) \
  1399	    SSL_ctrl(ssl, DTLS_CTRL_HANDLE_TIMEOUT, 0, NULL)
  1400	#define SSL_num_renegotiations(ssl) \
  1401	    SSL_ctrl((ssl), SSL_CTRL_GET_NUM_RENEGOTIATIONS, 0, NULL)
  1402	#define SSL_clear_num_renegotiations(ssl) \
  1403	    SSL_ctrl((ssl), SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS, 0, NULL)
  1404	#define SSL_total_renegotiations(ssl) \
  1405	    SSL_ctrl((ssl), SSL_CTRL_GET_TOTAL_RENEGOTIATIONS, 0, NULL)
  1406	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1407	#define SSL_CTX_set_tmp_dh(ctx, dh) \
  1408	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_TMP_DH, 0, (char *)(dh))
  1409	#endif
  1410	#define SSL_CTX_set_dh_auto(ctx, onoff) \
  1411	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_DH_AUTO, onoff, NULL)
  1412	#define SSL_set_dh_auto(s, onoff) \
  1413	    SSL_ctrl(s, SSL_CTRL_SET_DH_AUTO, onoff, NULL)
  1414	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1415	#define SSL_set_tmp_dh(ssl, dh) \
  1416	    SSL_ctrl(ssl, SSL_CTRL_SET_TMP_DH, 0, (char *)(dh))
  1417	#endif
  1418	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1419	#define SSL_CTX_set_tmp_ecdh(ctx, ecdh) \
  1420	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH, 0, (char *)(ecdh))
  1421	#define SSL_set_tmp_ecdh(ssl, ecdh) \
  1422	    SSL_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH, 0, (char *)(ecdh))
  1423	#endif
  1424	#define SSL_CTX_add_extra_chain_cert(ctx, x509) \
  1425	    SSL_CTX_ctrl(ctx, SSL_CTRL_EXTRA_CHAIN_CERT, 0, (char *)(x509))
  1426	#define SSL_CTX_get_extra_chain_certs(ctx, px509) \
  1427	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_EXTRA_CHAIN_CERTS, 0, px509)
  1428	#define SSL_CTX_get_extra_chain_certs_only(ctx, px509) \
  1429	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_EXTRA_CHAIN_CERTS, 1, px509)
  1430	#define SSL_CTX_clear_extra_chain_certs(ctx) \
  1431	    SSL_CTX_ctrl(ctx, SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS, 0, NULL)
  1432	#define SSL_CTX_set0_chain(ctx, sk) \
  1433	    SSL_CTX_ctrl(ctx, SSL_CTRL_CHAIN, 0, (char *)(sk))
  1434	#define SSL_CTX_set1_chain(ctx, sk) \
  1435	    SSL_CTX_ctrl(ctx, SSL_CTRL_CHAIN, 1, (char *)(sk))
  1436	#define SSL_CTX_add0_chain_cert(ctx, x509) \
  1437	    SSL_CTX_ctrl(ctx, SSL_CTRL_CHAIN_CERT, 0, (char *)(x509))
  1438	#define SSL_CTX_add1_chain_cert(ctx, x509) \
  1439	    SSL_CTX_ctrl(ctx, SSL_CTRL_CHAIN_CERT, 1, (char *)(x509))
  1440	#define SSL_CTX_get0_chain_certs(ctx, px509) \
  1441	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_CHAIN_CERTS, 0, px509)
  1442	#define SSL_CTX_clear_chain_certs(ctx) \
  1443	    SSL_CTX_set0_chain(ctx, NULL)
  1444	#define SSL_CTX_build_cert_chain(ctx, flags) \
  1445	    SSL_CTX_ctrl(ctx, SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
  1446	#define SSL_CTX_select_current_cert(ctx, x509) \
  1447	    SSL_CTX_ctrl(ctx, SSL_CTRL_SELECT_CURRENT_CERT, 0, (char *)(x509))
  1448	#define SSL_CTX_set_current_cert(ctx, op) \
  1449	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_CURRENT_CERT, op, NULL)
  1450	#define SSL_CTX_set0_verify_cert_store(ctx, st) \
  1451	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_VERIFY_CERT_STORE, 0, (char *)(st))
  1452	#define SSL_CTX_set1_verify_cert_store(ctx, st) \
  1453	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_VERIFY_CERT_STORE, 1, (char *)(st))
  1454	#define SSL_CTX_get0_verify_cert_store(ctx, st) \
  1455	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_VERIFY_CERT_STORE, 0, (char *)(st))
  1456	#define SSL_CTX_set0_chain_cert_store(ctx, st) \
  1457	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_CHAIN_CERT_STORE, 0, (char *)(st))
  1458	#define SSL_CTX_set1_chain_cert_store(ctx, st) \
  1459	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_CHAIN_CERT_STORE, 1, (char *)(st))
  1460	#define SSL_CTX_get0_chain_cert_store(ctx, st) \
  1461	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_CHAIN_CERT_STORE, 0, (char *)(st))
  1462	#define SSL_set0_chain(s, sk) \
  1463	    SSL_ctrl(s, SSL_CTRL_CHAIN, 0, (char *)(sk))
  1464	#define SSL_set1_chain(s, sk) \
  1465	    SSL_ctrl(s, SSL_CTRL_CHAIN, 1, (char *)(sk))
  1466	#define SSL_add0_chain_cert(s, x509) \
  1467	    SSL_ctrl(s, SSL_CTRL_CHAIN_CERT, 0, (char *)(x509))
  1468	#define SSL_add1_chain_cert(s, x509) \
  1469	    SSL_ctrl(s, SSL_CTRL_CHAIN_CERT, 1, (char *)(x509))
  1470	#define SSL_get0_chain_certs(s, px509) \
  1471	    SSL_ctrl(s, SSL_CTRL_GET_CHAIN_CERTS, 0, px509)
  1472	#define SSL_clear_chain_certs(s) \
  1473	    SSL_set0_chain(s, NULL)
  1474	#define SSL_build_cert_chain(s, flags) \
  1475	    SSL_ctrl(s, SSL_CTRL_BUILD_CERT_CHAIN, flags, NULL)
  1476	#define SSL_select_current_cert(s, x509) \
  1477	    SSL_ctrl(s, SSL_CTRL_SELECT_CURRENT_CERT, 0, (char *)(x509))
  1478	#define SSL_set_current_cert(s, op) \
  1479	    SSL_ctrl(s, SSL_CTRL_SET_CURRENT_CERT, op, NULL)
  1480	#define SSL_set0_verify_cert_store(s, st) \
  1481	    SSL_ctrl(s, SSL_CTRL_SET_VERIFY_CERT_STORE, 0, (char *)(st))
  1482	#define SSL_set1_verify_cert_store(s, st) \
  1483	    SSL_ctrl(s, SSL_CTRL_SET_VERIFY_CERT_STORE, 1, (char *)(st))
  1484	#define SSL_get0_verify_cert_store(s, st) \
  1485	    SSL_ctrl(s, SSL_CTRL_GET_VERIFY_CERT_STORE, 0, (char *)(st))
  1486	#define SSL_set0_chain_cert_store(s, st) \
  1487	    SSL_ctrl(s, SSL_CTRL_SET_CHAIN_CERT_STORE, 0, (char *)(st))
  1488	#define SSL_set1_chain_cert_store(s, st) \
  1489	    SSL_ctrl(s, SSL_CTRL_SET_CHAIN_CERT_STORE, 1, (char *)(st))
  1490	#define SSL_get0_chain_cert_store(s, st) \
  1491	    SSL_ctrl(s, SSL_CTRL_GET_CHAIN_CERT_STORE, 0, (char *)(st))
  1492	
  1493	#define SSL_get1_groups(s, glist) \
  1494	    SSL_ctrl(s, SSL_CTRL_GET_GROUPS, 0, (int *)(glist))
  1495	#define SSL_get0_iana_groups(s, plst) \
  1496	    SSL_ctrl(s, SSL_CTRL_GET_IANA_GROUPS, 0, (uint16_t **)(plst))
  1497	#define SSL_CTX_set1_groups(ctx, glist, glistlen) \
  1498	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_GROUPS, glistlen, (int *)(glist))
  1499	#define SSL_CTX_set1_groups_list(ctx, s) \
  1500	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_GROUPS_LIST, 0, (char *)(s))
  1501	#define SSL_CTX_get0_implemented_groups(ctx, all, out)       \
  1502	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET0_IMPLEMENTED_GROUPS, all, \
  1503	        (STACK_OF(OPENSSL_CSTRING) *)(out))
  1504	#define SSL_set1_groups(s, glist, glistlen) \
  1505	    SSL_ctrl(s, SSL_CTRL_SET_GROUPS, glistlen, (char *)(glist))
  1506	#define SSL_set1_groups_list(s, str) \
  1507	    SSL_ctrl(s, SSL_CTRL_SET_GROUPS_LIST, 0, (char *)(str))
  1508	#define SSL_get_shared_group(s, n) \
  1509	    SSL_ctrl(s, SSL_CTRL_GET_SHARED_GROUP, n, NULL)
  1510	#define SSL_get_negotiated_group(s) \
  1511	    SSL_ctrl(s, SSL_CTRL_GET_NEGOTIATED_GROUP, 0, NULL)
  1512	#define SSL_CTX_set1_sigalgs(ctx, slist, slistlen) \
  1513	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_SIGALGS, slistlen, (int *)(slist))
  1514	#define SSL_CTX_set1_sigalgs_list(ctx, s) \
  1515	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_SIGALGS_LIST, 0, (char *)(s))
  1516	#define SSL_set1_sigalgs(s, slist, slistlen) \
  1517	    SSL_ctrl(s, SSL_CTRL_SET_SIGALGS, slistlen, (int *)(slist))
  1518	#define SSL_set1_sigalgs_list(s, str) \
  1519	    SSL_ctrl(s, SSL_CTRL_SET_SIGALGS_LIST, 0, (char *)(str))
  1520	#define SSL_CTX_set1_client_sigalgs(ctx, slist, slistlen) \
  1521	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_CLIENT_SIGALGS, slistlen, (int *)(slist))
  1522	#define SSL_CTX_set1_client_sigalgs_list(ctx, s) \
  1523	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_CLIENT_SIGALGS_LIST, 0, (char *)(s))
  1524	#define SSL_set1_client_sigalgs(s, slist, slistlen) \
  1525	    SSL_ctrl(s, SSL_CTRL_SET_CLIENT_SIGALGS, slistlen, (int *)(slist))
  1526	#define SSL_set1_client_sigalgs_list(s, str) \
  1527	    SSL_ctrl(s, SSL_CTRL_SET_CLIENT_SIGALGS_LIST, 0, (char *)(str))
  1528	#define SSL_get0_certificate_types(s, clist) \
  1529	    SSL_ctrl(s, SSL_CTRL_GET_CLIENT_CERT_TYPES, 0, (char *)(clist))
  1530	#define SSL_CTX_set1_client_certificate_types(ctx, clist, clistlen) \
  1531	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_CLIENT_CERT_TYPES, clistlen,     \
  1532	        (char *)(clist))
  1533	#define SSL_set1_client_certificate_types(s, clist, clistlen) \
  1534	    SSL_ctrl(s, SSL_CTRL_SET_CLIENT_CERT_TYPES, clistlen, (char *)(clist))
  1535	#define SSL_get0_signature_name(s, str) \
  1536	    SSL_ctrl(s, SSL_CTRL_GET_SIGNATURE_NAME, 0, (1 ? (str) : (const char **)NULL))
  1537	#define SSL_get_signature_nid(s, pn) \
  1538	    SSL_ctrl(s, SSL_CTRL_GET_SIGNATURE_NID, 0, pn)
  1539	#define SSL_get0_peer_signature_name(s, str) \
  1540	    SSL_ctrl(s, SSL_CTRL_GET_PEER_SIGNATURE_NAME, 0, (1 ? (str) : (const char **)NULL))
  1541	#define SSL_get_peer_signature_nid(s, pn) \
  1542	    SSL_ctrl(s, SSL_CTRL_GET_PEER_SIGNATURE_NID, 0, pn)
  1543	#define SSL_get_peer_tmp_key(s, pk) \
  1544	    SSL_ctrl(s, SSL_CTRL_GET_PEER_TMP_KEY, 0, pk)
  1545	#define SSL_get_tmp_key(s, pk) \
  1546	    SSL_ctrl(s, SSL_CTRL_GET_TMP_KEY, 0, pk)
  1547	#define SSL_get0_raw_cipherlist(s, plst) \
  1548	    SSL_ctrl(s, SSL_CTRL_GET_RAW_CIPHERLIST, 0, plst)
  1549	#define SSL_get0_ec_point_formats(s, plst) \
  1550	    SSL_ctrl(s, SSL_CTRL_GET_EC_POINT_FORMATS, 0, plst)
  1551	#define SSL_CTX_set_min_proto_version(ctx, version) \
  1552	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
  1553	#define SSL_CTX_set_max_proto_version(ctx, version) \
  1554	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
  1555	#define SSL_CTX_get_min_proto_version(ctx) \
  1556	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
  1557	#define SSL_CTX_get_max_proto_version(ctx) \
  1558	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
  1559	#define SSL_set_min_proto_version(s, version) \
  1560	    SSL_ctrl(s, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
  1561	#define SSL_set_max_proto_version(s, version) \
  1562	    SSL_ctrl(s, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
  1563	#define SSL_get_min_proto_version(s) \
  1564	    SSL_ctrl(s, SSL_CTRL_GET_MIN_PROTO_VERSION, 0, NULL)
  1565	#define SSL_get_max_proto_version(s) \
  1566	    SSL_ctrl(s, SSL_CTRL_GET_MAX_PROTO_VERSION, 0, NULL)
  1567	
  1568	const char *SSL_get0_group_name(SSL *s);
  1569	const char *SSL_group_to_name(SSL *s, int id);
  1570	
  1571	/* Backwards compatibility, original 1.1.0 names */
  1572	#define SSL_CTRL_GET_SERVER_TMP_KEY \
  1573	    SSL_CTRL_GET_PEER_TMP_KEY
  1574	#define SSL_get_server_tmp_key(s, pk) \
  1575	    SSL_get_peer_tmp_key(s, pk)
  1576	
  1577	int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey);
  1578	int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey);
  1579	
  1580	/*
  1581	 * The following symbol names are old and obsolete. They are kept
  1582	 * for compatibility reasons only and should not be used anymore.
  1583	 */
  1584	#define SSL_CTRL_GET_CURVES SSL_CTRL_GET_GROUPS
  1585	#define SSL_CTRL_SET_CURVES SSL_CTRL_SET_GROUPS
  1586	#define SSL_CTRL_SET_CURVES_LIST SSL_CTRL_SET_GROUPS_LIST
  1587	#define SSL_CTRL_GET_SHARED_CURVE SSL_CTRL_GET_SHARED_GROUP
  1588	
  1589	#define SSL_get1_curves SSL_get1_groups
  1590	#define SSL_CTX_set1_curves SSL_CTX_set1_groups
  1591	#define SSL_CTX_set1_curves_list SSL_CTX_set1_groups_list
  1592	#define SSL_set1_curves SSL_set1_groups
  1593	#define SSL_set1_curves_list SSL_set1_groups_list
  1594	#define SSL_get_shared_curve SSL_get_shared_group
  1595	
  1596	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  1597	/* Provide some compatibility macros for removed functionality. */
  1598	#define SSL_CTX_need_tmp_RSA(ctx) 0
  1599	#define SSL_CTX_set_tmp_rsa(ctx, rsa) 1
  1600	#define SSL_need_tmp_RSA(ssl) 0
  1601	#define SSL_set_tmp_rsa(ssl, rsa) 1
  1602	#define SSL_CTX_set_ecdh_auto(dummy, onoff) ((onoff) != 0)
  1603	#define SSL_set_ecdh_auto(dummy, onoff) ((onoff) != 0)
  1604	/*
  1605	 * We "pretend" to call the callback to avoid warnings about unused static
  1606	 * functions.
  1607	 */
  1608	#define SSL_CTX_set_tmp_rsa_callback(ctx, cb) \
  1609	    while (0)                                 \
  1610	    (cb)(NULL, 0, 0)
  1611	#define SSL_set_tmp_rsa_callback(ssl, cb) \
  1612	    while (0)                             \
  1613	    (cb)(NULL, 0, 0)
  1614	#endif
  1615	__owur const BIO_METHOD *BIO_f_ssl(void);
  1616	__owur BIO *BIO_new_ssl(SSL_CTX *ctx, int client);
  1617	__owur BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
  1618	__owur BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
  1619	__owur int BIO_ssl_copy_session_id(BIO *to, BIO *from);
  1620	void BIO_ssl_shutdown(BIO *ssl_bio);
  1621	
  1622	__owur int SSL_CTX_set_cipher_list(SSL_CTX *, const char *str);
  1623	__owur SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
  1624	__owur SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
  1625	    const SSL_METHOD *meth);
  1626	int SSL_CTX_up_ref(SSL_CTX *ctx);
  1627	void SSL_CTX_free(SSL_CTX *);
  1628	__owur long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
  1629	__owur long SSL_CTX_get_timeout(const SSL_CTX *ctx);
  1630	__owur X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
  1631	void SSL_CTX_set_cert_store(SSL_CTX *, X509_STORE *);
  1632	void SSL_CTX_set1_cert_store(SSL_CTX *, X509_STORE *);
  1633	__owur int SSL_want(const SSL *s);
  1634	__owur int SSL_clear(SSL *s);
  1635	
  1636	#ifndef OPENSSL_NO_DEPRECATED_3_4
  1637	OSSL_DEPRECATEDIN_3_4_FOR("not Y2038-safe, replace with SSL_CTX_flush_sessions_ex()")
  1638	void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
  1639	#endif
  1640	void SSL_CTX_flush_sessions_ex(SSL_CTX *ctx, time_t tm);
  1641	
  1642	__owur const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
  1643	__owur const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s);
  1644	__owur int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits);
  1645	__owur const char *SSL_CIPHER_get_version(const SSL_CIPHER *c);
  1646	__owur const char *SSL_CIPHER_get_name(const SSL_CIPHER *c);
  1647	__owur const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c);
  1648	__owur const char *OPENSSL_cipher_name(const char *rfc_name);
  1649	__owur uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c);
  1650	__owur uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c);
  1651	__owur int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c);
  1652	__owur int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c);
  1653	__owur const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c);
  1654	__owur int SSL_CIPHER_is_aead(const SSL_CIPHER *c);
  1655	
  1656	__owur int SSL_get_fd(const SSL *s);
  1657	__owur int SSL_get_rfd(const SSL *s);
  1658	__owur int SSL_get_wfd(const SSL *s);
  1659	__owur const char *SSL_get_cipher_list(const SSL *s, int n);
  1660	__owur char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size);
  1661	__owur int SSL_get_read_ahead(const SSL *s);
  1662	__owur int SSL_pending(const SSL *s);
  1663	__owur int SSL_has_pending(const SSL *s);
  1664	#ifndef OPENSSL_NO_SOCK
  1665	__owur int SSL_set_fd(SSL *s, int fd);
  1666	__owur int SSL_set_rfd(SSL *s, int fd);
  1667	__owur int SSL_set_wfd(SSL *s, int fd);
  1668	#endif
  1669	void SSL_set0_rbio(SSL *s, BIO *rbio);
  1670	void SSL_set0_wbio(SSL *s, BIO *wbio);
  1671	void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio);
  1672	__owur BIO *SSL_get_rbio(const SSL *s);
  1673	__owur BIO *SSL_get_wbio(const SSL *s);
  1674	__owur int SSL_set_cipher_list(SSL *s, const char *str);
  1675	__owur int SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str);
  1676	__owur int SSL_set_ciphersuites(SSL *s, const char *str);
  1677	void SSL_set_read_ahead(SSL *s, int yes);
  1678	__owur int SSL_get_verify_mode(const SSL *s);
  1679	__owur int SSL_get_verify_depth(const SSL *s);
  1680	__owur SSL_verify_cb SSL_get_verify_callback(const SSL *s);
  1681	void SSL_set_verify(SSL *s, int mode, SSL_verify_cb callback);
  1682	void SSL_set_verify_depth(SSL *s, int depth);
  1683	void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg);
  1684	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1685	OSSL_DEPRECATEDIN_3_0 __owur int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
  1686	OSSL_DEPRECATEDIN_3_0
  1687	__owur int SSL_use_RSAPrivateKey_ASN1(SSL *ssl,
  1688	    const unsigned char *d, long len);
  1689	#endif
  1690	__owur int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
  1691	__owur int SSL_use_PrivateKey_ASN1(int pk, SSL *ssl, const unsigned char *d,
  1692	    long len);
  1693	__owur int SSL_use_certificate(SSL *ssl, X509 *x);
  1694	__owur int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);
  1695	__owur int SSL_use_cert_and_key(SSL *ssl, X509 *x509, EVP_PKEY *privatekey,
  1696	    STACK_OF(X509) *chain, int override);
  1697	
  1698	/* serverinfo file format versions */
  1699	#define SSL_SERVERINFOV1 1
  1700	#define SSL_SERVERINFOV2 2
  1701	
  1702	/* Set serverinfo data for the current active cert. */
  1703	__owur int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
  1704	    size_t serverinfo_length);
  1705	__owur int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
  1706	    const unsigned char *serverinfo,
  1707	    size_t serverinfo_length);
  1708	__owur int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
  1709	
  1710	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1711	OSSL_DEPRECATEDIN_3_0
  1712	__owur int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
  1713	#endif
  1714	
  1715	__owur int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
  1716	__owur int SSL_use_certificate_file(SSL *ssl, const char *file, int type);
  1717	
  1718	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1719	OSSL_DEPRECATEDIN_3_0
  1720	__owur int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file,
  1721	    int type);
  1722	#endif
  1723	__owur int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
  1724	    int type);
  1725	__owur int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
  1726	    int type);
  1727	/* PEM type */
  1728	__owur int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file);
  1729	__owur int SSL_use_certificate_chain_file(SSL *ssl, const char *file);
  1730	__owur STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
  1731	__owur STACK_OF(X509_NAME) *SSL_load_client_CA_file_ex(const char *file, OSSL_LIB_CTX *libctx,
  1732	    const char *propq);
  1733	__owur int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
  1734	    const char *file);
  1735	int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
  1736	    const char *dir);
  1737	int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
  1738	    const char *uri);
  1739	
  1740	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  1741	#define SSL_load_error_strings()                   \
  1742	    OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
  1743	            | OPENSSL_INIT_LOAD_CRYPTO_STRINGS,    \
  1744	        NULL)
  1745	#endif
  1746	
  1747	__owur const char *SSL_state_string(const SSL *s);
  1748	__owur const char *SSL_rstate_string(const SSL *s);
  1749	__owur const char *SSL_state_string_long(const SSL *s);
  1750	__owur const char *SSL_rstate_string_long(const SSL *s);
  1751	
  1752	#ifndef OPENSSL_NO_DEPRECATED_3_4
  1753	OSSL_DEPRECATEDIN_3_4_FOR("not Y2038-safe, replace with SSL_SESSION_get_time_ex()")
  1754	__owur long SSL_SESSION_get_time(const SSL_SESSION *s);
  1755	OSSL_DEPRECATEDIN_3_4_FOR("not Y2038-safe, replace with SSL_SESSION_set_time_ex()")
  1756	__owur long SSL_SESSION_set_time(SSL_SESSION *s, long t);
  1757	#endif
  1758	__owur long SSL_SESSION_get_timeout(const SSL_SESSION *s);
  1759	__owur long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
  1760	__owur int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
  1761	__owur int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
  1762	
  1763	__owur time_t SSL_SESSION_get_time_ex(const SSL_SESSION *s);
  1764	__owur time_t SSL_SESSION_set_time_ex(SSL_SESSION *s, time_t t);
  1765	
  1766	__owur const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s);
  1767	__owur int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname);
  1768	void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s,
  1769	    const unsigned char **alpn,
  1770	    size_t *len);
  1771	__owur int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s,
  1772	    const unsigned char *alpn,
  1773	    size_t len);
  1774	__owur const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s);
  1775	__owur int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher);
  1776	__owur int SSL_SESSION_has_ticket(const SSL_SESSION *s);
  1777	__owur unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s);
  1778	void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick,
  1779	    size_t *len);
  1780	__owur uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s);
  1781	__owur int SSL_SESSION_set_max_early_data(SSL_SESSION *s,
  1782	    uint32_t max_early_data);
  1783	__owur int SSL_copy_session_id(SSL *to, const SSL *from);
  1784	__owur X509 *SSL_SESSION_get0_peer(SSL_SESSION *s);
  1785	__owur int SSL_SESSION_set1_id_context(SSL_SESSION *s,
  1786	    const unsigned char *sid_ctx,
  1787	    unsigned int sid_ctx_len);
  1788	__owur int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
  1789	    unsigned int sid_len);
  1790	__owur int SSL_SESSION_is_resumable(const SSL_SESSION *s);
  1791	
  1792	__owur SSL_SESSION *SSL_SESSION_new(void);
  1793	__owur SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src);
  1794	const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
  1795	    unsigned int *len);
  1796	const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s,
  1797	    unsigned int *len);
  1798	__owur unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s);
  1799	#ifndef OPENSSL_NO_STDIO
  1800	int SSL_SESSION_print_fp(FILE *fp, const SSL_SESSION *ses);
  1801	#endif
  1802	int SSL_SESSION_print(BIO *fp, const SSL_SESSION *ses);
  1803	int SSL_SESSION_print_keylog(BIO *bp, const SSL_SESSION *x);
  1804	int SSL_SESSION_up_ref(SSL_SESSION *ses);
  1805	void SSL_SESSION_free(SSL_SESSION *ses);
  1806	__owur int i2d_SSL_SESSION(const SSL_SESSION *in, unsigned char **pp);
  1807	__owur int SSL_set_session(SSL *to, SSL_SESSION *session);
  1808	int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
  1809	int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
  1810	__owur int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb);
  1811	__owur int SSL_set_generate_session_id(SSL *s, GEN_SESSION_CB cb);
  1812	__owur int SSL_has_matching_session_id(const SSL *s,
  1813	    const unsigned char *id,
  1814	    unsigned int id_len);
  1815	SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
  1816	    long length);
  1817	SSL_SESSION *d2i_SSL_SESSION_ex(SSL_SESSION **a, const unsigned char **pp,
  1818	    long length, OSSL_LIB_CTX *libctx,
  1819	    const char *propq);
  1820	
  1821	#ifdef OPENSSL_X509_H
  1822	__owur X509 *SSL_get0_peer_certificate(const SSL *s);
  1823	__owur X509 *SSL_get1_peer_certificate(const SSL *s);
  1824	/* Deprecated in 3.0.0 */
  1825	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1826	#define SSL_get_peer_certificate SSL_get1_peer_certificate
  1827	#endif
  1828	#endif
  1829	
  1830	__owur STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);
  1831	
  1832	__owur int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
  1833	__owur int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
  1834	__owur SSL_verify_cb SSL_CTX_get_verify_callback(const SSL_CTX *ctx);
  1835	void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, SSL_verify_cb callback);
  1836	void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
  1837	void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
  1838	    int (*cb)(X509_STORE_CTX *, void *),
  1839	    void *arg);
  1840	void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg),
  1841	    void *arg);
  1842	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1843	OSSL_DEPRECATEDIN_3_0
  1844	__owur int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
  1845	OSSL_DEPRECATEDIN_3_0
  1846	__owur int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d,
  1847	    long len);
  1848	#endif
  1849	__owur int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
  1850	__owur int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
  1851	    const unsigned char *d, long len);
  1852	__owur int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
  1853	__owur int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len,
  1854	    const unsigned char *d);
  1855	__owur int SSL_CTX_use_cert_and_key(SSL_CTX *ctx, X509 *x509, EVP_PKEY *privatekey,
  1856	    STACK_OF(X509) *chain, int override);
  1857	
  1858	void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
  1859	void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);
  1860	pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx);
  1861	void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx);
  1862	void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb);
  1863	void SSL_set_default_passwd_cb_userdata(SSL *s, void *u);
  1864	pem_password_cb *SSL_get_default_passwd_cb(SSL *s);
  1865	void *SSL_get_default_passwd_cb_userdata(SSL *s);
  1866	
  1867	__owur int SSL_CTX_check_private_key(const SSL_CTX *ctx);
  1868	__owur int SSL_check_private_key(const SSL *ctx);
  1869	
  1870	__owur int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
  1871	    const unsigned char *sid_ctx,
  1872	    unsigned int sid_ctx_len);
  1873	
  1874	SSL *SSL_new(SSL_CTX *ctx);
  1875	int SSL_up_ref(SSL *s);
  1876	int SSL_is_dtls(const SSL *s);
  1877	int SSL_is_tls(const SSL *s);
  1878	int SSL_is_quic(const SSL *s);
  1879	__owur int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
  1880	    unsigned int sid_ctx_len);
  1881	
  1882	__owur int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
  1883	__owur int SSL_set_purpose(SSL *ssl, int purpose);
  1884	__owur int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
  1885	__owur int SSL_set_trust(SSL *ssl, int trust);
  1886	
  1887	__owur int SSL_set1_host(SSL *s, const char *host);
  1888	__owur int SSL_add1_host(SSL *s, const char *host);
  1889	__owur const char *SSL_get0_peername(SSL *s);
  1890	void SSL_set_hostflags(SSL *s, unsigned int flags);
  1891	
  1892	__owur int SSL_CTX_dane_enable(SSL_CTX *ctx);
  1893	__owur int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md,
  1894	    uint8_t mtype, uint8_t ord);
  1895	__owur int SSL_dane_enable(SSL *s, const char *basedomain);
  1896	__owur int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
  1897	    uint8_t mtype, const unsigned char *data, size_t dlen);
  1898	__owur int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki);
  1899	__owur int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
  1900	    uint8_t *mtype, const unsigned char **data,
  1901	    size_t *dlen);
  1902	/*
  1903	 * Bridge opacity barrier between libcrypt and libssl, also needed to support
  1904	 * offline testing in test/danetest.c
  1905	 */
  1906	SSL_DANE *SSL_get0_dane(SSL *ssl);
  1907	/*
  1908	 * DANE flags
  1909	 */
  1910	unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags);
  1911	unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags);
  1912	unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags);
  1913	unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags);
  1914	
  1915	__owur int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
  1916	__owur int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);
  1917	
  1918	__owur X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
  1919	__owur X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
  1920	
  1921	#ifndef OPENSSL_NO_SRP
  1922	#ifndef OPENSSL_NO_DEPRECATED_3_0
  1923	OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name);
  1924	OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password);
  1925	OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength);
  1926	OSSL_DEPRECATEDIN_3_0
  1927	int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx,
  1928	    char *(*cb)(SSL *, void *));
  1929	OSSL_DEPRECATEDIN_3_0
  1930	int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx,
  1931	    int (*cb)(SSL *, void *));
  1932	OSSL_DEPRECATEDIN_3_0
  1933	int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx,
  1934	    int (*cb)(SSL *, int *, void *));
  1935	OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);
  1936	
  1937	OSSL_DEPRECATEDIN_3_0
  1938	int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g,
  1939	    BIGNUM *sa, BIGNUM *v, char *info);
  1940	OSSL_DEPRECATEDIN_3_0
  1941	int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass,
  1942	    const char *grp);
  1943	
  1944	OSSL_DEPRECATEDIN_3_0 __owur BIGNUM *SSL_get_srp_g(SSL *s);
  1945	OSSL_DEPRECATEDIN_3_0 __owur BIGNUM *SSL_get_srp_N(SSL *s);
  1946	
  1947	OSSL_DEPRECATEDIN_3_0 __owur char *SSL_get_srp_username(SSL *s);
  1948	OSSL_DEPRECATEDIN_3_0 __owur char *SSL_get_srp_userinfo(SSL *s);
  1949	#endif
  1950	#endif
  1951	
  1952	/*
  1953	 * ClientHello callback and helpers.
  1954	 */
  1955	
  1956	#define SSL_CLIENT_HELLO_SUCCESS 1
  1957	#define SSL_CLIENT_HELLO_ERROR 0
  1958	#define SSL_CLIENT_HELLO_RETRY (-1)
  1959	
  1960	typedef int (*SSL_client_hello_cb_fn)(SSL *s, int *al, void *arg);
  1961	void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
  1962	    void *arg);
  1963	typedef int (*SSL_new_pending_conn_cb_fn)(SSL_CTX *ctx, SSL *new_ssl,
  1964	    void *arg);
  1965	void SSL_CTX_set_new_pending_conn_cb(SSL_CTX *c, SSL_new_pending_conn_cb_fn cb,
  1966	    void *arg);
  1967	
  1968	int SSL_client_hello_isv2(SSL *s);
  1969	unsigned int SSL_client_hello_get0_legacy_version(SSL *s);
  1970	size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out);
  1971	size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out);
  1972	size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out);
  1973	size_t SSL_client_hello_get0_compression_methods(SSL *s,
  1974	    const unsigned char **out);
  1975	int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen);
  1976	int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts,
  1977	    size_t *num_exts);
  1978	int SSL_client_hello_get0_ext(SSL *s, unsigned int type,
  1979	    const unsigned char **out, size_t *outlen);
  1980	
  1981	void SSL_certs_clear(SSL *s);
  1982	void SSL_free(SSL *ssl);
  1983	#ifdef OSSL_ASYNC_FD
  1984	/*
  1985	 * Windows application developer has to include windows.h to use these.
  1986	 */
  1987	__owur int SSL_waiting_for_async(SSL *s);
  1988	__owur int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds);
  1989	__owur int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd,
  1990	    size_t *numaddfds, OSSL_ASYNC_FD *delfd,
  1991	    size_t *numdelfds);
  1992	__owur int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback);
  1993	__owur int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg);
  1994	__owur int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback);
  1995	__owur int SSL_set_async_callback_arg(SSL *s, void *arg);
  1996	__owur int SSL_get_async_status(SSL *s, int *status);
  1997	
  1998	#endif
  1999	__owur int SSL_accept(SSL *ssl);
  2000	__owur int SSL_stateless(SSL *s);
  2001	__owur int SSL_connect(SSL *ssl);
  2002	__owur int SSL_read(SSL *ssl, void *buf, int num);
  2003	__owur int SSL_read_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
  2004	
  2005	#define SSL_READ_EARLY_DATA_ERROR 0
  2006	#define SSL_READ_EARLY_DATA_SUCCESS 1
  2007	#define SSL_READ_EARLY_DATA_FINISH 2
  2008	
  2009	__owur int SSL_read_early_data(SSL *s, void *buf, size_t num,
  2010	    size_t *readbytes);
  2011	__owur int SSL_peek(SSL *ssl, void *buf, int num);
  2012	__owur int SSL_peek_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
  2013	__owur ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size,
  2014	    int flags);
  2015	__owur int SSL_write(SSL *ssl, const void *buf, int num);
  2016	__owur int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
  2017	__owur int SSL_write_early_data(SSL *s, const void *buf, size_t num,
  2018	    size_t *written);
  2019	long SSL_ctrl(SSL *ssl, int cmd, long larg, void *parg);
  2020	long SSL_callback_ctrl(SSL *, int, void (*)(void));
  2021	long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg);
  2022	long SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));
  2023	
  2024	#define SSL_WRITE_FLAG_CONCLUDE (1U << 0)
  2025	
  2026	__owur int SSL_write_ex2(SSL *s, const void *buf, size_t num,
  2027	    uint64_t flags,
  2028	    size_t *written);
  2029	
  2030	#define SSL_EARLY_DATA_NOT_SENT 0
  2031	#define SSL_EARLY_DATA_REJECTED 1
  2032	#define SSL_EARLY_DATA_ACCEPTED 2
  2033	
  2034	__owur int SSL_get_early_data_status(const SSL *s);
  2035	
  2036	__owur int SSL_get_error(const SSL *s, int ret_code);
  2037	__owur const char *SSL_get_version(const SSL *s);
  2038	__owur int SSL_get_handshake_rtt(const SSL *s, uint64_t *rtt);
  2039	
  2040	/* This sets the 'default' SSL version that SSL_new() will create */
  2041	#ifndef OPENSSL_NO_DEPRECATED_3_0
  2042	OSSL_DEPRECATEDIN_3_0
  2043	__owur int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);
  2044	#endif
  2045	
  2046	#ifndef OPENSSL_NO_SSL3_METHOD
  2047	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2048	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_method(void); /* SSLv3 */
  2049	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_server_method(void);
  2050	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *SSLv3_client_method(void);
  2051	#endif
  2052	#endif
  2053	
  2054	#define SSLv23_method TLS_method
  2055	#define SSLv23_server_method TLS_server_method
  2056	#define SSLv23_client_method TLS_client_method
  2057	
  2058	/* Negotiate highest available SSL/TLS version */
  2059	__owur const SSL_METHOD *TLS_method(void);
  2060	__owur const SSL_METHOD *TLS_server_method(void);
  2061	__owur const SSL_METHOD *TLS_client_method(void);
  2062	
  2063	#ifndef OPENSSL_NO_TLS1_METHOD
  2064	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2065	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_method(void); /* TLSv1.0 */
  2066	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_server_method(void);
  2067	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_client_method(void);
  2068	#endif
  2069	#endif
  2070	
  2071	#ifndef OPENSSL_NO_TLS1_1_METHOD
  2072	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2073	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_method(void); /* TLSv1.1 */
  2074	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_server_method(void);
  2075	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_1_client_method(void);
  2076	#endif
  2077	#endif
  2078	
  2079	#ifndef OPENSSL_NO_TLS1_2_METHOD
  2080	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2081	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_method(void); /* TLSv1.2 */
  2082	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_server_method(void);
  2083	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *TLSv1_2_client_method(void);
  2084	#endif
  2085	#endif
  2086	
  2087	#ifndef OPENSSL_NO_DTLS1_METHOD
  2088	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2089	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_method(void); /* DTLSv1.0 */
  2090	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_server_method(void);
  2091	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_client_method(void);
  2092	#endif
  2093	#endif
  2094	
  2095	#ifndef OPENSSL_NO_DTLS1_2_METHOD
  2096	/* DTLSv1.2 */
  2097	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2098	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_method(void);
  2099	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_server_method(void);
  2100	OSSL_DEPRECATEDIN_1_1_0 __owur const SSL_METHOD *DTLSv1_2_client_method(void);
  2101	#endif
  2102	#endif
  2103	
  2104	__owur const SSL_METHOD *DTLS_method(void); /* DTLS 1.0 and 1.2 */
  2105	__owur const SSL_METHOD *DTLS_server_method(void); /* DTLS 1.0 and 1.2 */
  2106	__owur const SSL_METHOD *DTLS_client_method(void); /* DTLS 1.0 and 1.2 */
  2107	
  2108	__owur size_t DTLS_get_data_mtu(const SSL *s);
  2109	
  2110	__owur STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);
  2111	__owur STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
  2112	__owur STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s);
  2113	__owur STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s);
  2114	
  2115	__owur int SSL_do_handshake(SSL *s);
  2116	int SSL_key_update(SSL *s, int updatetype);
  2117	int SSL_get_key_update_type(const SSL *s);
  2118	int SSL_renegotiate(SSL *s);
  2119	int SSL_renegotiate_abbreviated(SSL *s);
  2120	__owur int SSL_renegotiate_pending(const SSL *s);
  2121	int SSL_new_session_ticket(SSL *s);
  2122	int SSL_shutdown(SSL *s);
  2123	__owur int SSL_verify_client_post_handshake(SSL *s);
  2124	void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val);
  2125	void SSL_set_post_handshake_auth(SSL *s, int val);
  2126	
  2127	__owur const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx);
  2128	__owur const SSL_METHOD *SSL_get_ssl_method(const SSL *s);
  2129	__owur int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
  2130	__owur const char *SSL_alert_type_string_long(int value);
  2131	__owur const char *SSL_alert_type_string(int value);
  2132	__owur const char *SSL_alert_desc_string_long(int value);
  2133	__owur const char *SSL_alert_desc_string(int value);
  2134	
  2135	void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
  2136	void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
  2137	__owur const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s);
  2138	__owur const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx);
  2139	__owur int SSL_add1_to_CA_list(SSL *ssl, const X509 *x);
  2140	__owur int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x);
  2141	__owur const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s);
  2142	
  2143	void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
  2144	void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
  2145	__owur STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
  2146	__owur STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
  2147	__owur int SSL_add_client_CA(SSL *ssl, X509 *x);
  2148	__owur int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x);
  2149	
  2150	void SSL_set_connect_state(SSL *s);
  2151	void SSL_set_accept_state(SSL *s);
  2152	
  2153	__owur long SSL_get_default_timeout(const SSL *s);
  2154	
  2155	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2156	#define SSL_library_init() OPENSSL_init_ssl(0, NULL)
  2157	#endif
  2158	
  2159	__owur char *SSL_CIPHER_description(const SSL_CIPHER *, char *buf, int size);
  2160	__owur STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk);
  2161	
  2162	__owur SSL *SSL_dup(SSL *ssl);
  2163	
  2164	__owur X509 *SSL_get_certificate(const SSL *ssl);
  2165	/*
  2166	 * EVP_PKEY
  2167	 */
  2168	struct evp_pkey_st *SSL_get_privatekey(const SSL *ssl);
  2169	
  2170	__owur X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
  2171	__owur EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
  2172	
  2173	void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
  2174	__owur int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
  2175	void SSL_set_quiet_shutdown(SSL *ssl, int mode);
  2176	__owur int SSL_get_quiet_shutdown(const SSL *ssl);
  2177	void SSL_set_shutdown(SSL *ssl, int mode);
  2178	__owur int SSL_get_shutdown(const SSL *ssl);
  2179	__owur int SSL_version(const SSL *ssl);
  2180	__owur int SSL_client_version(const SSL *s);
  2181	__owur int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
  2182	__owur int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx);
  2183	__owur int SSL_CTX_set_default_verify_file(SSL_CTX *ctx);
  2184	__owur int SSL_CTX_set_default_verify_store(SSL_CTX *ctx);
  2185	__owur int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile);
  2186	__owur int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath);
  2187	__owur int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore);
  2188	__owur int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
  2189	    const char *CAfile,
  2190	    const char *CApath);
  2191	#define SSL_get0_session SSL_get_session /* just peek at pointer */
  2192	__owur SSL_SESSION *SSL_get_session(const SSL *ssl);
  2193	__owur SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
  2194	__owur SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
  2195	SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
  2196	void SSL_set_info_callback(SSL *ssl,
  2197	    void (*cb)(const SSL *ssl, int type, int val));
  2198	void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type,
  2199	    int val);
  2200	__owur OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);
  2201	
  2202	void SSL_set_verify_result(SSL *ssl, long v);
  2203	__owur long SSL_get_verify_result(const SSL *ssl);
  2204	__owur STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s);
  2205	
  2206	__owur size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
  2207	    size_t outlen);
  2208	__owur size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
  2209	    size_t outlen);
  2210	__owur size_t SSL_SESSION_get_master_key(const SSL_SESSION *sess,
  2211	    unsigned char *out, size_t outlen);
  2212	__owur int SSL_SESSION_set1_master_key(SSL_SESSION *sess,
  2213	    const unsigned char *in, size_t len);
  2214	uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *sess);
  2215	
  2216	#define SSL_get_ex_new_index(l, p, newf, dupf, freef) \
  2217	    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, l, p, newf, dupf, freef)
  2218	__owur int SSL_set_ex_data(SSL *ssl, int idx, void *data);
  2219	void *SSL_get_ex_data(const SSL *ssl, int idx);
  2220	#define SSL_SESSION_get_ex_new_index(l, p, newf, dupf, freef) \
  2221	    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, l, p, newf, dupf, freef)
  2222	__owur int SSL_SESSION_set_ex_data(SSL_SESSION *ss, int idx, void *data);
  2223	void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss, int idx);
  2224	#define SSL_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
  2225	    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, l, p, newf, dupf, freef)
  2226	__owur int SSL_CTX_set_ex_data(SSL_CTX *ssl, int idx, void *data);
  2227	void *SSL_CTX_get_ex_data(const SSL_CTX *ssl, int idx);
  2228	
  2229	__owur int SSL_get_ex_data_X509_STORE_CTX_idx(void);
  2230	
  2231	#define SSL_CTX_sess_set_cache_size(ctx, t) \
  2232	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_SESS_CACHE_SIZE, t, NULL)
  2233	#define SSL_CTX_sess_get_cache_size(ctx) \
  2234	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_SESS_CACHE_SIZE, 0, NULL)
  2235	#define SSL_CTX_set_session_cache_mode(ctx, m) \
  2236	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_SESS_CACHE_MODE, m, NULL)
  2237	#define SSL_CTX_get_session_cache_mode(ctx) \
  2238	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_SESS_CACHE_MODE, 0, NULL)
  2239	
  2240	#define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
  2241	#define SSL_CTX_set_default_read_ahead(ctx, m) SSL_CTX_set_read_ahead(ctx, m)
  2242	#define SSL_CTX_get_read_ahead(ctx) \
  2243	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_READ_AHEAD, 0, NULL)
  2244	#define SSL_CTX_set_read_ahead(ctx, m) \
  2245	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_READ_AHEAD, m, NULL)
  2246	#define SSL_CTX_get_max_cert_list(ctx) \
  2247	    SSL_CTX_ctrl(ctx, SSL_CTRL_GET_MAX_CERT_LIST, 0, NULL)
  2248	#define SSL_CTX_set_max_cert_list(ctx, m) \
  2249	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_CERT_LIST, m, NULL)
  2250	#define SSL_get_max_cert_list(ssl) \
  2251	    SSL_ctrl(ssl, SSL_CTRL_GET_MAX_CERT_LIST, 0, NULL)
  2252	#define SSL_set_max_cert_list(ssl, m) \
  2253	    SSL_ctrl(ssl, SSL_CTRL_SET_MAX_CERT_LIST, m, NULL)
  2254	
  2255	#define SSL_CTX_set_max_send_fragment(ctx, m) \
  2256	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_SEND_FRAGMENT, m, NULL)
  2257	#define SSL_set_max_send_fragment(ssl, m) \
  2258	    SSL_ctrl(ssl, SSL_CTRL_SET_MAX_SEND_FRAGMENT, m, NULL)
  2259	#define SSL_CTX_set_split_send_fragment(ctx, m) \
  2260	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_SPLIT_SEND_FRAGMENT, m, NULL)
  2261	#define SSL_set_split_send_fragment(ssl, m) \
  2262	    SSL_ctrl(ssl, SSL_CTRL_SET_SPLIT_SEND_FRAGMENT, m, NULL)
  2263	#define SSL_CTX_set_max_pipelines(ctx, m) \
  2264	    SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PIPELINES, m, NULL)
  2265	#define SSL_set_max_pipelines(ssl, m) \
  2266	    SSL_ctrl(ssl, SSL_CTRL_SET_MAX_PIPELINES, m, NULL)
  2267	#define SSL_set_retry_verify(ssl) \
  2268	    (SSL_ctrl(ssl, SSL_CTRL_SET_RETRY_VERIFY, 0, NULL) > 0)
  2269	
  2270	void SSL_CTX_set_default_read_buffer_len(SSL_CTX *ctx, size_t len);
  2271	void SSL_set_default_read_buffer_len(SSL *s, size_t len);
  2272	
  2273	#ifndef OPENSSL_NO_DH
  2274	#ifndef OPENSSL_NO_DEPRECATED_3_0
  2275	/* NB: the |keylength| is only applicable when is_export is true */
  2276	OSSL_DEPRECATEDIN_3_0
  2277	void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
  2278	    DH *(*dh)(SSL *ssl, int is_export,
  2279	        int keylength));
  2280	OSSL_DEPRECATEDIN_3_0
  2281	void SSL_set_tmp_dh_callback(SSL *ssl,
  2282	    DH *(*dh)(SSL *ssl, int is_export,
  2283	        int keylength));
  2284	#endif
  2285	#endif
  2286	
  2287	__owur const COMP_METHOD *SSL_get_current_compression(const SSL *s);
  2288	__owur const COMP_METHOD *SSL_get_current_expansion(const SSL *s);
  2289	__owur const char *SSL_COMP_get_name(const COMP_METHOD *comp);
  2290	__owur const char *SSL_COMP_get0_name(const SSL_COMP *comp);
  2291	__owur int SSL_COMP_get_id(const SSL_COMP *comp);
  2292	STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
  2293	__owur STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
  2294	        *meths);
  2295	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2296	#define SSL_COMP_free_compression_methods() \
  2297	    while (0)                               \
  2298	    continue
  2299	#endif
  2300	__owur int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
  2301	
  2302	const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr);
  2303	int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c);
  2304	int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c);
  2305	int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
  2306	    int isv2format, STACK_OF(SSL_CIPHER) **sk,
  2307	    STACK_OF(SSL_CIPHER) **scsvs);
  2308	
  2309	/* TLS extensions functions */
  2310	__owur int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);
  2311	
  2312	__owur int SSL_set_session_ticket_ext_cb(SSL *s,
  2313	    tls_session_ticket_ext_cb_fn cb,
  2314	    void *arg);
  2315	
  2316	/* Pre-shared secret session resumption functions */
  2317	__owur int SSL_set_session_secret_cb(SSL *s,
  2318	    tls_session_secret_cb_fn session_secret_cb,
  2319	    void *arg);
  2320	
  2321	void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
  2322	    int (*cb)(SSL *ssl,
  2323	        int
  2324	            is_forward_secure));
  2325	
  2326	void SSL_set_not_resumable_session_callback(SSL *ssl,
  2327	    int (*cb)(SSL *ssl,
  2328	        int is_forward_secure));
  2329	
  2330	void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
  2331	    size_t (*cb)(SSL *ssl, int type,
  2332	        size_t len, void *arg));
  2333	void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
  2334	void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx);
  2335	int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
  2336	int SSL_CTX_set_block_padding_ex(SSL_CTX *ctx, size_t app_block_size,
  2337	    size_t hs_block_size);
  2338	
  2339	int SSL_set_record_padding_callback(SSL *ssl,
  2340	    size_t (*cb)(SSL *ssl, int type,
  2341	        size_t len, void *arg));
  2342	void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg);
  2343	void *SSL_get_record_padding_callback_arg(const SSL *ssl);
  2344	int SSL_set_block_padding(SSL *ssl, size_t block_size);
  2345	int SSL_set_block_padding_ex(SSL *ssl, size_t app_block_size,
  2346	    size_t hs_block_size);
  2347	int SSL_set_num_tickets(SSL *s, size_t num_tickets);
  2348	size_t SSL_get_num_tickets(const SSL *s);
  2349	int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets);
  2350	size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx);
  2351	
  2352	/* QUIC support */
  2353	int SSL_handle_events(SSL *s);
  2354	__owur int SSL_get_event_timeout(SSL *s, struct timeval *tv, int *is_infinite);
  2355	__owur int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc);
  2356	__owur int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc);
  2357	__owur int SSL_net_read_desired(SSL *s);
  2358	__owur int SSL_net_write_desired(SSL *s);
  2359	__owur int SSL_set_blocking_mode(SSL *s, int blocking);
  2360	__owur int SSL_get_blocking_mode(SSL *s);
  2361	__owur int SSL_set1_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr);
  2362	__owur SSL *SSL_get0_connection(SSL *s);
  2363	__owur int SSL_is_connection(SSL *s);
  2364	
  2365	__owur int SSL_is_listener(SSL *ssl);
  2366	__owur SSL *SSL_get0_listener(SSL *s);
  2367	#define SSL_LISTENER_FLAG_NO_VALIDATE (1UL << 1)
  2368	__owur SSL *SSL_new_listener(SSL_CTX *ctx, uint64_t flags);
  2369	__owur SSL *SSL_new_listener_from(SSL *ssl, uint64_t flags);
  2370	__owur SSL *SSL_new_from_listener(SSL *ssl, uint64_t flags);
  2371	#define SSL_ACCEPT_CONNECTION_NO_BLOCK (1UL << 0)
  2372	__owur SSL *SSL_accept_connection(SSL *ssl, uint64_t flags);
  2373	__owur size_t SSL_get_accept_connection_queue_len(SSL *ssl);
  2374	__owur int SSL_listen(SSL *ssl);
  2375	
  2376	__owur int SSL_is_domain(SSL *s);
  2377	__owur SSL *SSL_get0_domain(SSL *s);
  2378	__owur SSL *SSL_new_domain(SSL_CTX *ctx, uint64_t flags);
  2379	
  2380	#define SSL_DOMAIN_FLAG_SINGLE_THREAD (1U << 0)
  2381	#define SSL_DOMAIN_FLAG_MULTI_THREAD (1U << 1)
  2382	#define SSL_DOMAIN_FLAG_THREAD_ASSISTED (1U << 2)
  2383	#define SSL_DOMAIN_FLAG_BLOCKING (1U << 3)
  2384	#define SSL_DOMAIN_FLAG_LEGACY_BLOCKING (1U << 4)
  2385	
  2386	__owur int SSL_CTX_set_domain_flags(SSL_CTX *ctx, uint64_t domain_flags);
  2387	__owur int SSL_CTX_get_domain_flags(const SSL_CTX *ctx, uint64_t *domain_flags);
  2388	__owur int SSL_get_domain_flags(const SSL *ssl, uint64_t *domain_flags);
  2389	
  2390	#define SSL_STREAM_TYPE_NONE 0
  2391	#define SSL_STREAM_TYPE_READ (1U << 0)
  2392	#define SSL_STREAM_TYPE_WRITE (1U << 1)
  2393	#define SSL_STREAM_TYPE_BIDI (SSL_STREAM_TYPE_READ | SSL_STREAM_TYPE_WRITE)
  2394	__owur int SSL_get_stream_type(SSL *s);
  2395	
  2396	__owur uint64_t SSL_get_stream_id(SSL *s);
  2397	__owur int SSL_is_stream_local(SSL *s);
  2398	
  2399	#define SSL_DEFAULT_STREAM_MODE_NONE 0
  2400	#define SSL_DEFAULT_STREAM_MODE_AUTO_BIDI 1
  2401	#define SSL_DEFAULT_STREAM_MODE_AUTO_UNI 2
  2402	__owur int SSL_set_default_stream_mode(SSL *s, uint32_t mode);
  2403	
  2404	#define SSL_STREAM_FLAG_UNI (1U << 0)
  2405	#define SSL_STREAM_FLAG_NO_BLOCK (1U << 1)
  2406	#define SSL_STREAM_FLAG_ADVANCE (1U << 2)
  2407	__owur SSL *SSL_new_stream(SSL *s, uint64_t flags);
  2408	
  2409	#define SSL_INCOMING_STREAM_POLICY_AUTO 0
  2410	#define SSL_INCOMING_STREAM_POLICY_ACCEPT 1
  2411	#define SSL_INCOMING_STREAM_POLICY_REJECT 2
  2412	__owur int SSL_set_incoming_stream_policy(SSL *s, int policy, uint64_t aec);
  2413	
  2414	#define SSL_ACCEPT_STREAM_NO_BLOCK (1U << 0)
  2415	__owur SSL *SSL_accept_stream(SSL *s, uint64_t flags);
  2416	__owur size_t SSL_get_accept_stream_queue_len(SSL *s);
  2417	
  2418	#ifndef OPENSSL_NO_QUIC
  2419	__owur int SSL_inject_net_dgram(SSL *s, const unsigned char *buf,
  2420	    size_t buf_len,
  2421	    const BIO_ADDR *peer,
  2422	    const BIO_ADDR *local);
  2423	#endif
  2424	
  2425	typedef struct ssl_shutdown_ex_args_st {
  2426	    uint64_t quic_error_code;
  2427	    const char *quic_reason;
  2428	} SSL_SHUTDOWN_EX_ARGS;
  2429	
  2430	#define SSL_SHUTDOWN_FLAG_RAPID (1U << 0)
  2431	#define SSL_SHUTDOWN_FLAG_NO_STREAM_FLUSH (1U << 1)
  2432	#define SSL_SHUTDOWN_FLAG_NO_BLOCK (1U << 2)
  2433	#define SSL_SHUTDOWN_FLAG_WAIT_PEER (1U << 3)
  2434	
  2435	__owur int SSL_shutdown_ex(SSL *ssl, uint64_t flags,
  2436	    const SSL_SHUTDOWN_EX_ARGS *args,
  2437	    size_t args_len);
  2438	
  2439	__owur int SSL_stream_conclude(SSL *ssl, uint64_t flags);
  2440	
  2441	typedef struct ssl_stream_reset_args_st {
  2442	    uint64_t quic_error_code;
  2443	} SSL_STREAM_RESET_ARGS;
  2444	
  2445	__owur int SSL_stream_reset(SSL *ssl,
  2446	    const SSL_STREAM_RESET_ARGS *args,
  2447	    size_t args_len);
  2448	
  2449	#define SSL_STREAM_STATE_NONE 0
  2450	#define SSL_STREAM_STATE_OK 1
  2451	#define SSL_STREAM_STATE_WRONG_DIR 2
  2452	#define SSL_STREAM_STATE_FINISHED 3
  2453	#define SSL_STREAM_STATE_RESET_LOCAL 4
  2454	#define SSL_STREAM_STATE_RESET_REMOTE 5
  2455	#define SSL_STREAM_STATE_CONN_CLOSED 6
  2456	__owur int SSL_get_stream_read_state(SSL *ssl);
  2457	__owur int SSL_get_stream_write_state(SSL *ssl);
  2458	
  2459	__owur int SSL_get_stream_read_error_code(SSL *ssl, uint64_t *app_error_code);
  2460	__owur int SSL_get_stream_write_error_code(SSL *ssl, uint64_t *app_error_code);
  2461	
  2462	#define SSL_CONN_CLOSE_FLAG_LOCAL (1U << 0)
  2463	#define SSL_CONN_CLOSE_FLAG_TRANSPORT (1U << 1)
  2464	
  2465	typedef struct ssl_conn_close_info_st {
  2466	    uint64_t error_code, frame_type;
  2467	    const char *reason;
  2468	    size_t reason_len;
  2469	    uint32_t flags;
  2470	} SSL_CONN_CLOSE_INFO;
  2471	
  2472	__owur int SSL_get_conn_close_info(SSL *ssl,
  2473	    SSL_CONN_CLOSE_INFO *info,
  2474	    size_t info_len);
  2475	
  2476	#define SSL_VALUE_CLASS_GENERIC 0
  2477	#define SSL_VALUE_CLASS_FEATURE_REQUEST 1
  2478	#define SSL_VALUE_CLASS_FEATURE_PEER_REQUEST 2
  2479	#define SSL_VALUE_CLASS_FEATURE_NEGOTIATED 3
  2480	
  2481	#define SSL_VALUE_NONE 0
  2482	#define SSL_VALUE_QUIC_STREAM_BIDI_LOCAL_AVAIL 1
  2483	#define SSL_VALUE_QUIC_STREAM_BIDI_REMOTE_AVAIL 2
  2484	#define SSL_VALUE_QUIC_STREAM_UNI_LOCAL_AVAIL 3
  2485	#define SSL_VALUE_QUIC_STREAM_UNI_REMOTE_AVAIL 4
  2486	#define SSL_VALUE_QUIC_IDLE_TIMEOUT 5
  2487	#define SSL_VALUE_EVENT_HANDLING_MODE 6
  2488	#define SSL_VALUE_STREAM_WRITE_BUF_SIZE 7
  2489	#define SSL_VALUE_STREAM_WRITE_BUF_USED 8
  2490	#define SSL_VALUE_STREAM_WRITE_BUF_AVAIL 9
  2491	
  2492	#define SSL_VALUE_EVENT_HANDLING_MODE_INHERIT 0
  2493	#define SSL_VALUE_EVENT_HANDLING_MODE_IMPLICIT 1
  2494	#define SSL_VALUE_EVENT_HANDLING_MODE_EXPLICIT 2
  2495	
  2496	int SSL_get_value_uint(SSL *s, uint32_t class_, uint32_t id, uint64_t *v);
  2497	int SSL_set_value_uint(SSL *s, uint32_t class_, uint32_t id, uint64_t v);
  2498	
  2499	#define SSL_get_generic_value_uint(ssl, id, v) \
  2500	    SSL_get_value_uint((ssl), SSL_VALUE_CLASS_GENERIC, (id), (v))
  2501	#define SSL_set_generic_value_uint(ssl, id, v) \
  2502	    SSL_set_value_uint((ssl), SSL_VALUE_CLASS_GENERIC, (id), (v))
  2503	#define SSL_get_feature_request_uint(ssl, id, v) \
  2504	    SSL_get_value_uint((ssl), SSL_VALUE_CLASS_FEATURE_REQUEST, (id), (v))
  2505	#define SSL_set_feature_request_uint(ssl, id, v) \
  2506	    SSL_set_value_uint((ssl), SSL_VALUE_CLASS_FEATURE_REQUEST, (id), (v))
  2507	#define SSL_get_feature_peer_request_uint(ssl, id, v) \
  2508	    SSL_get_value_uint((ssl), SSL_VALUE_CLASS_FEATURE_PEER_REQUEST, (id), (v))
  2509	#define SSL_get_feature_negotiated_uint(ssl, id, v) \
  2510	    SSL_get_value_uint((ssl), SSL_VALUE_CLASS_FEATURE_NEGOTIATED, (id), (v))
  2511	
  2512	#define SSL_get_quic_stream_bidi_local_avail(ssl, value)                      \
  2513	    SSL_get_generic_value_uint((ssl), SSL_VALUE_QUIC_STREAM_BIDI_LOCAL_AVAIL, \
  2514	        (value))
  2515	#define SSL_get_quic_stream_bidi_remote_avail(ssl, value)                      \
  2516	    SSL_get_generic_value_uint((ssl), SSL_VALUE_QUIC_STREAM_BIDI_REMOTE_AVAIL, \
  2517	        (value))
  2518	#define SSL_get_quic_stream_uni_local_avail(ssl, value)                      \
  2519	    SSL_get_generic_value_uint((ssl), SSL_VALUE_QUIC_STREAM_UNI_LOCAL_AVAIL, \
  2520	        (value))
  2521	#define SSL_get_quic_stream_uni_remote_avail(ssl, value)                      \
  2522	    SSL_get_generic_value_uint((ssl), SSL_VALUE_QUIC_STREAM_UNI_REMOTE_AVAIL, \
  2523	        (value))
  2524	
  2525	#define SSL_get_event_handling_mode(ssl, value)                      \
  2526	    SSL_get_generic_value_uint((ssl), SSL_VALUE_EVENT_HANDLING_MODE, \
  2527	        (value))
  2528	#define SSL_set_event_handling_mode(ssl, value)                      \
  2529	    SSL_set_generic_value_uint((ssl), SSL_VALUE_EVENT_HANDLING_MODE, \
  2530	        (value))
  2531	
  2532	#define SSL_get_stream_write_buf_size(ssl, value)                      \
  2533	    SSL_get_generic_value_uint((ssl), SSL_VALUE_STREAM_WRITE_BUF_SIZE, \
  2534	        (value))
  2535	#define SSL_get_stream_write_buf_used(ssl, value)                      \
  2536	    SSL_get_generic_value_uint((ssl), SSL_VALUE_STREAM_WRITE_BUF_USED, \
  2537	        (value))
  2538	#define SSL_get_stream_write_buf_avail(ssl, value)                      \
  2539	    SSL_get_generic_value_uint((ssl), SSL_VALUE_STREAM_WRITE_BUF_AVAIL, \
  2540	        (value))
  2541	
  2542	#define SSL_POLL_EVENT_NONE 0
  2543	
  2544	#define SSL_POLL_EVENT_F (1U << 0) /* F   (Failure) */
  2545	#define SSL_POLL_EVENT_EL (1U << 1) /* EL  (Exception on Listener) */
  2546	#define SSL_POLL_EVENT_EC (1U << 2) /* EC  (Exception on Conn) */
  2547	#define SSL_POLL_EVENT_ECD (1U << 3) /* ECD (Exception on Conn Drained) */
  2548	#define SSL_POLL_EVENT_ER (1U << 4) /* ER  (Exception on Read) */
  2549	#define SSL_POLL_EVENT_EW (1U << 5) /* EW  (Exception on Write) */
  2550	#define SSL_POLL_EVENT_R (1U << 6) /* R   (Readable) */
  2551	#define SSL_POLL_EVENT_W (1U << 7) /* W   (Writable) */
  2552	#define SSL_POLL_EVENT_IC (1U << 8) /* IC  (Incoming Connection) */
  2553	#define SSL_POLL_EVENT_ISB (1U << 9) /* ISB (Incoming Stream: Bidi) */
  2554	#define SSL_POLL_EVENT_ISU (1U << 10) /* ISU (Incoming Stream: Uni) */
  2555	#define SSL_POLL_EVENT_OSB (1U << 11) /* OSB (Outgoing Stream: Bidi) */
  2556	#define SSL_POLL_EVENT_OSU (1U << 12) /* OSU (Outgoing Stream: Uni) */
  2557	
  2558	#define SSL_POLL_EVENT_RW (SSL_POLL_EVENT_R | SSL_POLL_EVENT_W)
  2559	#define SSL_POLL_EVENT_RE (SSL_POLL_EVENT_R | SSL_POLL_EVENT_ER)
  2560	#define SSL_POLL_EVENT_WE (SSL_POLL_EVENT_W | SSL_POLL_EVENT_EW)
  2561	#define SSL_POLL_EVENT_RWE (SSL_POLL_EVENT_RE | SSL_POLL_EVENT_WE)
  2562	#define SSL_POLL_EVENT_E (SSL_POLL_EVENT_EL | SSL_POLL_EVENT_EC \
  2563	    | SSL_POLL_EVENT_ER | SSL_POLL_EVENT_EW)
  2564	#define SSL_POLL_EVENT_IS (SSL_POLL_EVENT_ISB | SSL_POLL_EVENT_ISU)
  2565	#define SSL_POLL_EVENT_ISE (SSL_POLL_EVENT_IS | SSL_POLL_EVENT_EC)
  2566	#define SSL_POLL_EVENT_I (SSL_POLL_EVENT_IS | SSL_POLL_EVENT_IC)
  2567	#define SSL_POLL_EVENT_OS (SSL_POLL_EVENT_OSB | SSL_POLL_EVENT_OSU)
  2568	#define SSL_POLL_EVENT_OSE (SSL_POLL_EVENT_OS | SSL_POLL_EVENT_EC)
  2569	
  2570	typedef struct ssl_poll_item_st {
  2571	    BIO_POLL_DESCRIPTOR desc;
  2572	    uint64_t events, revents;
  2573	} SSL_POLL_ITEM;
  2574	
  2575	#define SSL_POLL_FLAG_NO_HANDLE_EVENTS (1U << 0)
  2576	
  2577	__owur int SSL_poll(SSL_POLL_ITEM *items,
  2578	    size_t num_items,
  2579	    size_t stride,
  2580	    const struct timeval *timeout,
  2581	    uint64_t flags,
  2582	    size_t *result_count);
  2583	
  2584	static ossl_inline ossl_unused BIO_POLL_DESCRIPTOR
  2585	SSL_as_poll_descriptor(SSL *s)
  2586	{
  2587	    BIO_POLL_DESCRIPTOR d;
  2588	
  2589	    d.type = BIO_POLL_DESCRIPTOR_TYPE_SSL;
  2590	    d.value.ssl = s;
  2591	    return d;
  2592	}
  2593	
  2594	#ifndef OPENSSL_NO_DEPRECATED_1_1_0
  2595	#define SSL_cache_hit(s) SSL_session_reused(s)
  2596	#endif
  2597	
  2598	__owur int SSL_session_reused(const SSL *s);
  2599	__owur int SSL_is_server(const SSL *s);
  2600	
  2601	__owur __owur SSL_CONF_CTX *SSL_CONF_CTX_new(void);
  2602	int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx);
  2603	void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx);
  2604	unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
  2605	__owur unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx,
  2606	    unsigned int flags);
  2607	__owur int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre);
  2608	
  2609	void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl);
  2610	void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx);
  2611	
  2612	__owur int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value);
  2613	__owur int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv);
  2614	__owur int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd);
  2615	
  2616	void SSL_add_ssl_module(void);
  2617	int SSL_config(SSL *s, const char *name);
  2618	int SSL_CTX_config(SSL_CTX *ctx, const char *name);
  2619	
  2620	#ifndef OPENSSL_NO_SSL_TRACE
  2621	void SSL_trace(int write_p, int version, int content_type,
  2622	    const void *buf, size_t len, SSL *ssl, void *arg);
  2623	#endif
  2624	
  2625	#ifndef OPENSSL_NO_SOCK
  2626	int DTLSv1_listen(SSL *s, BIO_ADDR *client);
  2627	#endif
  2628	
  2629	#ifndef OPENSSL_NO_CT
  2630	
  2631	/*
  2632	 * A callback for verifying that the received SCTs are sufficient.
  2633	 * Expected to return 1 if they are sufficient, otherwise 0.
  2634	 * May return a negative integer if an error occurs.
  2635	 * A connection should be aborted if the SCTs are deemed insufficient.
  2636	 */
  2637	typedef int (*ssl_ct_validation_cb)(const CT_POLICY_EVAL_CTX *ctx,
  2638	    const STACK_OF(SCT) *scts, void *arg);
  2639	
  2640	/*
  2641	 * Sets a |callback| that is invoked upon receipt of ServerHelloDone to validate
  2642	 * the received SCTs.
  2643	 * If the callback returns a non-positive result, the connection is terminated.
  2644	 * Call this function before beginning a handshake.
  2645	 * If a NULL |callback| is provided, SCT validation is disabled.
  2646	 * |arg| is arbitrary userdata that will be passed to the callback whenever it
  2647	 * is invoked. Ownership of |arg| remains with the caller.
  2648	 *
  2649	 * NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
  2650	 *       will be requested.
  2651	 */
  2652	int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
  2653	    void *arg);
  2654	int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
  2655	    ssl_ct_validation_cb callback,
  2656	    void *arg);
  2657	#define SSL_disable_ct(s) \
  2658	    ((void)SSL_set_validation_callback((s), NULL, NULL))
  2659	#define SSL_CTX_disable_ct(ctx) \
  2660	    ((void)SSL_CTX_set_validation_callback((ctx), NULL, NULL))
  2661	
  2662	/*
  2663	 * The validation type enumerates the available behaviours of the built-in SSL
  2664	 * CT validation callback selected via SSL_enable_ct() and SSL_CTX_enable_ct().
  2665	 * The underlying callback is a static function in libssl.
  2666	 */
  2667	enum {
  2668	    SSL_CT_VALIDATION_PERMISSIVE = 0,
  2669	    SSL_CT_VALIDATION_STRICT
  2670	};
  2671	
  2672	/*
  2673	 * Enable CT by setting up a callback that implements one of the built-in
  2674	 * validation variants.  The SSL_CT_VALIDATION_PERMISSIVE variant always
  2675	 * continues the handshake, the application can make appropriate decisions at
  2676	 * handshake completion.  The SSL_CT_VALIDATION_STRICT variant requires at
  2677	 * least one valid SCT, or else handshake termination will be requested.  The
  2678	 * handshake may continue anyway if SSL_VERIFY_NONE is in effect.
  2679	 */
  2680	int SSL_enable_ct(SSL *s, int validation_mode);
  2681	int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode);
  2682	
  2683	/*
  2684	 * Report whether a non-NULL callback is enabled.
  2685	 */
  2686	int SSL_ct_is_enabled(const SSL *s);
  2687	int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx);
  2688	
  2689	/* Gets the SCTs received from a connection */
  2690	const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
  2691	
  2692	/*
  2693	 * Loads the CT log list from the default location.
  2694	 * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
  2695	 * the log information loaded from this file will be appended to the
  2696	 * CTLOG_STORE.
  2697	 * Returns 1 on success, 0 otherwise.
  2698	 */
  2699	int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
  2700	
  2701	/*
  2702	 * Loads the CT log list from the specified file path.
  2703	 * If a CTLOG_STORE has previously been set using SSL_CTX_set_ctlog_store,
  2704	 * the log information loaded from this file will be appended to the
  2705	 * CTLOG_STORE.
  2706	 * Returns 1 on success, 0 otherwise.
  2707	 */
  2708	int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path);
  2709	
  2710	/*
  2711	 * Sets the CT log list used by all SSL connections created from this SSL_CTX.
  2712	 * Ownership of the CTLOG_STORE is transferred to the SSL_CTX.
  2713	 */
  2714	void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs);
  2715	
  2716	/*
  2717	 * Gets the CT log list used by all SSL connections created from this SSL_CTX.
  2718	 * This will be NULL unless one of the following functions has been called:
  2719	 * - SSL_CTX_set_default_ctlog_list_file
  2720	 * - SSL_CTX_set_ctlog_list_file
  2721	 * - SSL_CTX_set_ctlog_store
  2722	 */
  2723	const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx);
  2724	
  2725	#endif /* OPENSSL_NO_CT */
  2726	
  2727	/* What the "other" parameter contains in security callback */
  2728	/* Mask for type */
  2729	#define SSL_SECOP_OTHER_TYPE 0xffff0000
  2730	#define SSL_SECOP_OTHER_NONE 0
  2731	#define SSL_SECOP_OTHER_CIPHER (1 << 16)
  2732	#define SSL_SECOP_OTHER_CURVE (2 << 16)
  2733	#define SSL_SECOP_OTHER_DH (3 << 16)
  2734	#define SSL_SECOP_OTHER_PKEY (4 << 16)
  2735	#define SSL_SECOP_OTHER_SIGALG (5 << 16)
  2736	#define SSL_SECOP_OTHER_CERT (6 << 16)
  2737	
  2738	/* Indicated operation refers to peer key or certificate */
  2739	#define SSL_SECOP_PEER 0x1000
  2740	
  2741	/* Values for "op" parameter in security callback */
  2742	
  2743	/* Called to filter ciphers */
  2744	/* Ciphers client supports */
  2745	#define SSL_SECOP_CIPHER_SUPPORTED (1 | SSL_SECOP_OTHER_CIPHER)
  2746	/* Cipher shared by client/server */
  2747	#define SSL_SECOP_CIPHER_SHARED (2 | SSL_SECOP_OTHER_CIPHER)
  2748	/* Sanity check of cipher server selects */
  2749	#define SSL_SECOP_CIPHER_CHECK (3 | SSL_SECOP_OTHER_CIPHER)
  2750	/* Curves supported by client */
  2751	#define SSL_SECOP_CURVE_SUPPORTED (4 | SSL_SECOP_OTHER_CURVE)
  2752	/* Curves shared by client/server */
  2753	#define SSL_SECOP_CURVE_SHARED (5 | SSL_SECOP_OTHER_CURVE)
  2754	/* Sanity check of curve server selects */
  2755	#define SSL_SECOP_CURVE_CHECK (6 | SSL_SECOP_OTHER_CURVE)
  2756	/* Temporary DH key */
  2757	#define SSL_SECOP_TMP_DH (7 | SSL_SECOP_OTHER_PKEY)
  2758	/* SSL/TLS version */
  2759	#define SSL_SECOP_VERSION (9 | SSL_SECOP_OTHER_NONE)
  2760	/* Session tickets */
  2761	#define SSL_SECOP_TICKET (10 | SSL_SECOP_OTHER_NONE)
  2762	/* Supported signature algorithms sent to peer */
  2763	#define SSL_SECOP_SIGALG_SUPPORTED (11 | SSL_SECOP_OTHER_SIGALG)
  2764	/* Shared signature algorithm */
  2765	#define SSL_SECOP_SIGALG_SHARED (12 | SSL_SECOP_OTHER_SIGALG)
  2766	/* Sanity check signature algorithm allowed */
  2767	#define SSL_SECOP_SIGALG_CHECK (13 | SSL_SECOP_OTHER_SIGALG)
  2768	/* Used to get mask of supported public key signature algorithms */
  2769	#define SSL_SECOP_SIGALG_MASK (14 | SSL_SECOP_OTHER_SIGALG)
  2770	/* Use to see if compression is allowed */
  2771	#define SSL_SECOP_COMPRESSION (15 | SSL_SECOP_OTHER_NONE)
  2772	/* EE key in certificate */
  2773	#define SSL_SECOP_EE_KEY (16 | SSL_SECOP_OTHER_CERT)
  2774	/* CA key in certificate */
  2775	#define SSL_SECOP_CA_KEY (17 | SSL_SECOP_OTHER_CERT)
  2776	/* CA digest algorithm in certificate */
  2777	#define SSL_SECOP_CA_MD (18 | SSL_SECOP_OTHER_CERT)
  2778	/* Peer EE key in certificate */
  2779	#define SSL_SECOP_PEER_EE_KEY (SSL_SECOP_EE_KEY | SSL_SECOP_PEER)
  2780	/* Peer CA key in certificate */
  2781	#define SSL_SECOP_PEER_CA_KEY (SSL_SECOP_CA_KEY | SSL_SECOP_PEER)
  2782	/* Peer CA digest algorithm in certificate */
  2783	#define SSL_SECOP_PEER_CA_MD (SSL_SECOP_CA_MD | SSL_SECOP_PEER)
  2784	
  2785	void SSL_set_security_level(SSL *s, int level);
  2786	__owur int SSL_get_security_level(const SSL *s);
  2787	void SSL_set_security_callback(SSL *s,
  2788	    int (*cb)(const SSL *s, const SSL_CTX *ctx,
  2789	        int op, int bits, int nid,
  2790	        void *other, void *ex));
  2791	int (*SSL_get_security_callback(const SSL *s))(const SSL *s,
  2792	    const SSL_CTX *ctx, int op,
  2793	    int bits, int nid, void *other,
  2794	    void *ex);
  2795	void SSL_set0_security_ex_data(SSL *s, void *ex);
  2796	__owur void *SSL_get0_security_ex_data(const SSL *s);
  2797	
  2798	void SSL_CTX_set_security_level(SSL_CTX *ctx, int level);
  2799	__owur int SSL_CTX_get_security_level(const SSL_CTX *ctx);
  2800	void SSL_CTX_set_security_callback(SSL_CTX *ctx,
  2801	    int (*cb)(const SSL *s, const SSL_CTX *ctx,
  2802	        int op, int bits, int nid,
  2803	        void *other, void *ex));
  2804	int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx))(const SSL *s,
  2805	    const SSL_CTX *ctx,
  2806	    int op, int bits,
  2807	    int nid,
  2808	    void *other,
  2809	    void *ex);
  2810	void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex);
  2811	__owur void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx);
  2812	
  2813	/* OPENSSL_INIT flag 0x010000 reserved for internal use */
  2814	#define OPENSSL_INIT_NO_LOAD_SSL_STRINGS 0x00100000L
  2815	#define OPENSSL_INIT_LOAD_SSL_STRINGS 0x00200000L
  2816	
  2817	#define OPENSSL_INIT_SSL_DEFAULT \
  2818	    (OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS)
  2819	
  2820	int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
  2821	
  2822	#ifndef OPENSSL_NO_UNIT_TEST
  2823	__owur const struct openssl_ssl_test_functions *SSL_test_functions(void);
  2824	#endif
  2825	
  2826	__owur int SSL_free_buffers(SSL *ssl);
  2827	__owur int SSL_alloc_buffers(SSL *ssl);
  2828	
  2829	/* Status codes passed to the decrypt session ticket callback. Some of these
  2830	 * are for internal use only and are never passed to the callback. */
  2831	typedef int SSL_TICKET_STATUS;
  2832	
  2833	/* Support for ticket appdata */
  2834	/* fatal error, malloc failure */
  2835	#define SSL_TICKET_FATAL_ERR_MALLOC 0
  2836	/* fatal error, either from parsing or decrypting the ticket */
  2837	#define SSL_TICKET_FATAL_ERR_OTHER 1
  2838	/* No ticket present */
  2839	#define SSL_TICKET_NONE 2
  2840	/* Empty ticket present */
  2841	#define SSL_TICKET_EMPTY 3
  2842	/* the ticket couldn't be decrypted */
  2843	#define SSL_TICKET_NO_DECRYPT 4
  2844	/* a ticket was successfully decrypted */
  2845	#define SSL_TICKET_SUCCESS 5
  2846	/* same as above but the ticket needs to be renewed */
  2847	#define SSL_TICKET_SUCCESS_RENEW 6
  2848	
  2849	/* Return codes for the decrypt session ticket callback */
  2850	typedef int SSL_TICKET_RETURN;
  2851	
  2852	/* An error occurred */
  2853	#define SSL_TICKET_RETURN_ABORT 0
  2854	/* Do not use the ticket, do not send a renewed ticket to the client */
  2855	#define SSL_TICKET_RETURN_IGNORE 1
  2856	/* Do not use the ticket, send a renewed ticket to the client */
  2857	#define SSL_TICKET_RETURN_IGNORE_RENEW 2
  2858	/* Use the ticket, do not send a renewed ticket to the client */
  2859	#define SSL_TICKET_RETURN_USE 3
  2860	/* Use the ticket, send a renewed ticket to the client */
  2861	#define SSL_TICKET_RETURN_USE_RENEW 4
  2862	
  2863	typedef int (*SSL_CTX_generate_session_ticket_fn)(SSL *s, void *arg);
  2864	typedef SSL_TICKET_RETURN (*SSL_CTX_decrypt_session_ticket_fn)(SSL *s, SSL_SESSION *ss,
  2865	    const unsigned char *keyname,
  2866	    size_t keyname_length,
  2867	    SSL_TICKET_STATUS status,
  2868	    void *arg);
  2869	int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
  2870	    SSL_CTX_generate_session_ticket_fn gen_cb,
  2871	    SSL_CTX_decrypt_session_ticket_fn dec_cb,
  2872	    void *arg);
  2873	int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len);
  2874	int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len);
  2875	
  2876	typedef unsigned int (*DTLS_timer_cb)(SSL *s, unsigned int timer_us);
  2877	
  2878	void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);
  2879	
  2880	typedef int (*SSL_allow_early_data_cb_fn)(SSL *s, void *arg);
  2881	void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
  2882	    SSL_allow_early_data_cb_fn cb,
  2883	    void *arg);
  2884	void SSL_set_allow_early_data_cb(SSL *s,
  2885	    SSL_allow_early_data_cb_fn cb,
  2886	    void *arg);
  2887	
  2888	/* store the default cipher strings inside the library */
  2889	const char *OSSL_default_cipher_list(void);
  2890	const char *OSSL_default_ciphersuites(void);
  2891	
  2892	/* RFC8879 Certificate compression APIs */
  2893	
  2894	int SSL_CTX_compress_certs(SSL_CTX *ctx, int alg);
  2895	int SSL_compress_certs(SSL *ssl, int alg);
  2896	
  2897	int SSL_CTX_set1_cert_comp_preference(SSL_CTX *ctx, int *algs, size_t len);
  2898	int SSL_set1_cert_comp_preference(SSL *ssl, int *algs, size_t len);
  2899	
  2900	int SSL_CTX_set1_compressed_cert(SSL_CTX *ctx, int algorithm, unsigned char *comp_data,
  2901	    size_t comp_length, size_t orig_length);
  2902	int SSL_set1_compressed_cert(SSL *ssl, int algorithm, unsigned char *comp_data,
  2903	    size_t comp_length, size_t orig_length);
  2904	size_t SSL_CTX_get1_compressed_cert(SSL_CTX *ctx, int alg, unsigned char **data, size_t *orig_len);
  2905	size_t SSL_get1_compressed_cert(SSL *ssl, int alg, unsigned char **data, size_t *orig_len);
  2906	
  2907	__owur int SSL_add_expected_rpk(SSL *s, EVP_PKEY *rpk);
  2908	__owur EVP_PKEY *SSL_get0_peer_rpk(const SSL *s);
  2909	__owur EVP_PKEY *SSL_SESSION_get0_peer_rpk(SSL_SESSION *s);
  2910	__owur int SSL_get_negotiated_client_cert_type(const SSL *s);
  2911	__owur int SSL_get_negotiated_server_cert_type(const SSL *s);
  2912	
  2913	__owur int SSL_set1_client_cert_type(SSL *s, const unsigned char *val, size_t len);
  2914	__owur int SSL_set1_server_cert_type(SSL *s, const unsigned char *val, size_t len);
  2915	__owur int SSL_CTX_set1_client_cert_type(SSL_CTX *ctx, const unsigned char *val, size_t len);
  2916	__owur int SSL_CTX_set1_server_cert_type(SSL_CTX *ctx, const unsigned char *val, size_t len);
  2917	__owur int SSL_get0_client_cert_type(const SSL *s, unsigned char **t, size_t *len);
  2918	__owur int SSL_get0_server_cert_type(const SSL *s, unsigned char **t, size_t *len);
  2919	__owur int SSL_CTX_get0_client_cert_type(const SSL_CTX *ctx, unsigned char **t, size_t *len);
  2920	__owur int SSL_CTX_get0_server_cert_type(const SSL_CTX *s, unsigned char **t, size_t *len);
  2921	
  2922	/*
  2923	 * Protection level. For <= TLSv1.2 only "NONE" and "APPLICATION" are used.
  2924	 */
  2925	#define OSSL_RECORD_PROTECTION_LEVEL_NONE 0
  2926	#define OSSL_RECORD_PROTECTION_LEVEL_EARLY 1
  2927	#define OSSL_RECORD_PROTECTION_LEVEL_HANDSHAKE 2
  2928	#define OSSL_RECORD_PROTECTION_LEVEL_APPLICATION 3
  2929	
  2930	int SSL_set_quic_tls_cbs(SSL *s, const OSSL_DISPATCH *qtdis, void *arg);
  2931	int SSL_set_quic_tls_transport_params(SSL *s,
  2932	    const unsigned char *params,
  2933	    size_t params_len);
  2934	
  2935	int SSL_set_quic_tls_early_data_enabled(SSL *s, int enabled);
  2936	
  2937	#ifdef __cplusplus
  2938	}
  2939	#endif
  2940	#endif